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 or libtls 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-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 261   --enable-libssh          enable SFTP protocol via libssh [no]
 262   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 263   --enable-libtheora       enable Theora encoding via libtheora [no]
 264   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 265                            if openssl or gnutls is not used [no]
 266   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 267   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 268   --enable-libvidstab      enable video stabilization using vid.stab [no]
 269   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 270   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 271   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 272                            native implementation exists [no]
 273   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 274   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 275   --enable-libwebp         enable WebP encoding via libwebp [no]
 276   --enable-libx264         enable H.264 encoding via x264 [no]
 277   --enable-libx265         enable HEVC encoding via x265 [no]
 278   --enable-libxavs         enable AVS encoding via xavs [no]
 279   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 280   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 281   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 282   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 283   --enable-libxvid         enable Xvid encoding via xvidcore,
 284                            native MPEG-4/Xvid encoder exists [no]
 285   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 286   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 287   --enable-libzmq          enable message passing via libzmq [no]
 288   --enable-libzvbi         enable teletext support via libzvbi [no]
 289   --enable-lv2             enable LV2 audio filtering [no]
 290   --disable-lzma           disable lzma [autodetect]
 291   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 292   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 293   --enable-mediacodec      enable Android MediaCodec support [no]
 294   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 295   --enable-openal          enable OpenAL 1.1 capture support [no]
 296   --enable-opencl          enable OpenCL processing [no]
 297   --enable-opengl          enable OpenGL rendering [no]
 298   --enable-openssl         enable openssl, needed for https support
 299                            if gnutls or libtls is not used [no]
 300   --disable-sndio          disable sndio support [autodetect]
 301   --disable-schannel       disable SChannel SSP, needed for TLS support on
 302                            Windows if openssl and gnutls are not used [autodetect]
 303   --disable-sdl2           disable sdl2 [autodetect]
 304   --disable-securetransport disable Secure Transport, needed for TLS support
 305                            on OSX if openssl and gnutls are not used [autodetect]
 306   --enable-vapoursynth     enable VapourSynth demuxer [no]
 307   --disable-xlib           disable xlib [autodetect]
 308   --disable-zlib           disable zlib [autodetect]
 309
 310   The following libraries provide various hardware acceleration features:
 311   --disable-amf            disable AMF video encoding code [autodetect]
 312   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 313   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 314   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 315   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 316   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 317   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 318   --enable-libdrm          enable DRM code (Linux) [no]
 319   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 320   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 321   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 322   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 323   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 324   --enable-omx             enable OpenMAX IL code [no]
 325   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 326   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 327   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 328   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 329   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 330   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 331
 332 Toolchain options:
 333   --arch=ARCH              select architecture [$arch]
 334   --cpu=CPU                select the minimum required CPU (affects
 335                            instruction selection, may crash on older CPUs)
 336   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 337   --progs-suffix=SUFFIX    program name suffix []
 338   --enable-cross-compile   assume a cross-compiler is used
 339   --sysroot=PATH           root of cross-build tree
 340   --sysinclude=PATH        location of cross-build system headers
 341   --target-os=OS           compiler targets OS [$target_os]
 342   --target-exec=CMD        command to run executables on target
 343   --target-path=DIR        path to view of build directory on target
 344   --target-samples=DIR     path to samples directory on target
 345   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 346   --toolchain=NAME         set tool defaults according to NAME
 347                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 348                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 349                            valgrind-massif, valgrind-memcheck,
 350                            msvc, icl, gcov, llvm-cov, hardened)
 351   --nm=NM                  use nm tool NM [$nm_default]
 352   --ar=AR                  use archive tool AR [$ar_default]
 353   --as=AS                  use assembler AS [$as_default]
 354   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 355   --strip=STRIP            use strip tool STRIP [$strip_default]
 356   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 357   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 358   --cc=CC                  use C compiler CC [$cc_default]
 359   --cxx=CXX                use C compiler CXX [$cxx_default]
 360   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 361   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 362   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 363   --ld=LD                  use linker LD [$ld_default]
 364   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 365   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 366   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 367   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 368   --host-cc=HOSTCC         use host C compiler HOSTCC
 369   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 370   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 371   --host-ld=HOSTLD         use host linker HOSTLD
 372   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 373   --host-libs=HLIBS        use libs HLIBS when linking for host
 374   --host-os=OS             compiler host OS [$target_os]
 375   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 376   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 377   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 378   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 379   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 380   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 381   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 382   --extra-version=STRING   version string suffix []
 383   --optflags=OPTFLAGS      override optimization-related compiler flags
 384   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 385   --build-suffix=SUFFIX    library name suffix []
 386   --enable-pic             build position-independent code
 387   --enable-thumb           compile for Thumb instruction set
 388   --enable-lto             use link-time optimization
 389   --env="ENV=override"     override the environment variables
 390
 391 Advanced options (experts only):
 392   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 393   --custom-allocator=NAME  use a supported custom allocator
 394   --disable-symver         disable symbol versioning
 395   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 396   --disable-safe-bitstream-reader
 397                            disable buffer boundary checking in bitreaders
 398                            (faster, but may crash)
 399   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 400
 401 Optimization options (experts only):
 402   --disable-asm            disable all assembly optimizations
 403   --disable-altivec        disable AltiVec optimizations
 404   --disable-vsx            disable VSX optimizations
 405   --disable-power8         disable POWER8 optimizations
 406   --disable-amd3dnow       disable 3DNow! optimizations
 407   --disable-amd3dnowext    disable 3DNow! extended optimizations
 408   --disable-mmx            disable MMX optimizations
 409   --disable-mmxext         disable MMXEXT optimizations
 410   --disable-sse            disable SSE optimizations
 411   --disable-sse2           disable SSE2 optimizations
 412   --disable-sse3           disable SSE3 optimizations
 413   --disable-ssse3          disable SSSE3 optimizations
 414   --disable-sse4           disable SSE4 optimizations
 415   --disable-sse42          disable SSE4.2 optimizations
 416   --disable-avx            disable AVX optimizations
 417   --disable-xop            disable XOP optimizations
 418   --disable-fma3           disable FMA3 optimizations
 419   --disable-fma4           disable FMA4 optimizations
 420   --disable-avx2           disable AVX2 optimizations
 421   --disable-avx512         disable AVX-512 optimizations
 422   --disable-aesni          disable AESNI optimizations
 423   --disable-armv5te        disable armv5te optimizations
 424   --disable-armv6          disable armv6 optimizations
 425   --disable-armv6t2        disable armv6t2 optimizations
 426   --disable-vfp            disable VFP optimizations
 427   --disable-neon           disable NEON optimizations
 428   --disable-inline-asm     disable use of inline assembly
 429   --disable-x86asm         disable use of standalone x86 assembly
 430   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 431   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 432   --disable-msa            disable MSA optimizations
 433   --disable-mipsfpu        disable floating point MIPS optimizations
 434   --disable-mmi            disable Loongson SIMD optimizations
 435   --disable-fast-unaligned consider unaligned accesses slow
 436
 437 Developer options (useful when working on FFmpeg itself):
 438   --disable-debug          disable debugging symbols
 439   --enable-debug=LEVEL     set the debug level [$debuglevel]
 440   --disable-optimizations  disable compiler optimizations
 441   --enable-extra-warnings  enable more compiler warnings
 442   --disable-stripping      disable stripping of executables and shared libraries
 443   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 444                            2 causes a slowdown at runtime.
 445   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 446   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 447                            leaks and errors, using the specified valgrind binary.
 448                            Cannot be combined with --target-exec
 449   --enable-ftrapv          Trap arithmetic overflows
 450   --samples=PATH           location of test samples for FATE, if not set use
 451                            \$FATE_SAMPLES at make invocation time.
 452   --enable-neon-clobber-test check NEON registers for clobbering (should be
 453                            used only for debugging purposes)
 454   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 455                            should be used only for debugging purposes)
 456   --enable-random          randomly enable/disable components
 457   --disable-random
 458   --enable-random=LIST     randomly enable/disable specific components or
 459   --disable-random=LIST    component groups. LIST is a comma-separated list
 460                            of NAME[:PROB] entries where NAME is a component
 461                            (group) and PROB the probability associated with
 462                            NAME (default 0.5).
 463   --random-seed=VALUE      seed value for --enable/disable-random
 464   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 465                            (only applies to --disable-optimizations builds)
 466   --enable-osfuzz          Enable building fuzzer tool
 467   --libfuzzer=PATH         path to libfuzzer
 468   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 469                            in the name) of tests whose result is ignored
 470   --enable-linux-perf      enable Linux Performance Monitor API
 471
 472 NOTE: Object files are built at the place where configure is launched.
 473 EOF
 474   exit 0
 475 }
 476
 477 if test -t 1 && which tput >/dev/null 2>&1; then
 478     ncolors=$(tput colors)
 479     if test -n "$ncolors" && test $ncolors -ge 8; then
 480         bold_color=$(tput bold)
 481         warn_color=$(tput setaf 3)
 482         error_color=$(tput setaf 1)
 483         reset_color=$(tput sgr0)
 484     fi
 485     # 72 used instead of 80 since that's the default of pr
 486     ncols=$(tput cols)
 487 fi
 488 : ${ncols:=72}
 489
 490 log(){
 491     echo "$@" >> $logfile
 492 }
 493
 494 log_file(){
 495     log BEGIN $1
 496     pr -n -t $1 >> $logfile
 497     log END $1
 498 }
 499
 500 warn(){
 501     log "WARNING: $*"
 502     WARNINGS="${WARNINGS}WARNING: $*\n"
 503 }
 504
 505 die(){
 506     log "$@"
 507     echo "$error_color$bold_color$@$reset_color"
 508     cat <<EOF
 509
 510 If you think configure made a mistake, make sure you are using the latest
 511 version from Git.  If the latest version fails, report the problem to the
 512 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 513 EOF
 514     if disabled logging; then
 515         cat <<EOF
 516 Rerun configure with logging enabled (do not use --disable-logging), and
 517 include the log this produces with your report.
 518 EOF
 519     else
 520         cat <<EOF
 521 Include the log file "$logfile" produced by configure as this will help
 522 solve the problem.
 523 EOF
 524     fi
 525     exit 1
 526 }
 527
 528 # Avoid locale weirdness, besides we really just want to translate ASCII.
 529 toupper(){
 530     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 531 }
 532
 533 tolower(){
 534     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 535 }
 536
 537 c_escape(){
 538     echo "$*" | sed 's/["\\]/\\\0/g'
 539 }
 540
 541 sh_quote(){
 542     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 543     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 544     echo "$v"
 545 }
 546
 547 cleanws(){
 548     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 549 }
 550
 551 filter(){
 552     pat=$1
 553     shift
 554     for v; do
 555         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 556     done
 557 }
 558
 559 filter_out(){
 560     pat=$1
 561     shift
 562     for v; do
 563         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 564     done
 565 }
 566
 567 map(){
 568     m=$1
 569     shift
 570     for v; do eval $m; done
 571 }
 572
 573 add_suffix(){
 574     suffix=$1
 575     shift
 576     for v; do echo ${v}${suffix}; done
 577 }
 578
 579 remove_suffix(){
 580     suffix=$1
 581     shift
 582     for v; do echo ${v%$suffix}; done
 583 }
 584
 585 set_all(){
 586     value=$1
 587     shift
 588     for var in $*; do
 589         eval $var=$value
 590     done
 591 }
 592
 593 set_weak(){
 594     value=$1
 595     shift
 596     for var; do
 597         eval : \${$var:=$value}
 598     done
 599 }
 600
 601 sanitize_var_name(){
 602     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 603 }
 604
 605 set_sanitized(){
 606     var=$1
 607     shift
 608     eval $(sanitize_var_name "$var")='$*'
 609 }
 610
 611 get_sanitized(){
 612     eval echo \$$(sanitize_var_name "$1")
 613 }
 614
 615 pushvar(){
 616     for pvar in $*; do
 617         eval level=\${${pvar}_level:=0}
 618         eval ${pvar}_${level}="\$$pvar"
 619         eval ${pvar}_level=$(($level+1))
 620     done
 621 }
 622
 623 popvar(){
 624     for pvar in $*; do
 625         eval level=\${${pvar}_level:-0}
 626         test $level = 0 && continue
 627         eval level=$(($level-1))
 628         eval $pvar="\${${pvar}_${level}}"
 629         eval ${pvar}_level=$level
 630         eval unset ${pvar}_${level}
 631     done
 632 }
 633
 634 request(){
 635     for var in $*; do
 636         eval ${var}_requested=yes
 637         eval $var=
 638     done
 639 }
 640
 641 enable(){
 642     set_all yes $*
 643 }
 644
 645 disable(){
 646     set_all no $*
 647 }
 648
 649 enable_weak(){
 650     set_weak yes $*
 651 }
 652
 653 disable_weak(){
 654     set_weak no $*
 655 }
 656
 657 enable_sanitized(){
 658     for var; do
 659         enable $(sanitize_var_name $var)
 660     done
 661 }
 662
 663 disable_sanitized(){
 664     for var; do
 665         disable $(sanitize_var_name $var)
 666     done
 667 }
 668
 669 do_enable_deep(){
 670     for var; do
 671         enabled $var && continue
 672         eval sel="\$${var}_select"
 673         eval sgs="\$${var}_suggest"
 674         pushvar var sgs
 675         enable_deep $sel
 676         popvar sgs
 677         enable_deep_weak $sgs
 678         popvar var
 679     done
 680 }
 681
 682 enable_deep(){
 683     do_enable_deep $*
 684     enable $*
 685 }
 686
 687 enable_deep_weak(){
 688     for var; do
 689         disabled $var && continue
 690         pushvar var
 691         do_enable_deep $var
 692         popvar var
 693         enable_weak $var
 694     done
 695 }
 696
 697 requested(){
 698     test "${1#!}" = "$1" && op="=" || op="!="
 699     eval test "x\$${1#!}_requested" $op "xyes"
 700 }
 701
 702 enabled(){
 703     test "${1#!}" = "$1" && op="=" || op="!="
 704     eval test "x\$${1#!}" $op "xyes"
 705 }
 706
 707 disabled(){
 708     test "${1#!}" = "$1" && op="=" || op="!="
 709     eval test "x\$${1#!}" $op "xno"
 710 }
 711
 712 enabled_all(){
 713     for opt; do
 714         enabled $opt || return 1
 715     done
 716 }
 717
 718 disabled_all(){
 719     for opt; do
 720         disabled $opt || return 1
 721     done
 722 }
 723
 724 enabled_any(){
 725     for opt; do
 726         enabled $opt && return 0
 727     done
 728 }
 729
 730 disabled_any(){
 731     for opt; do
 732         disabled $opt && return 0
 733     done
 734     return 1
 735 }
 736
 737 set_default(){
 738     for opt; do
 739         eval : \${$opt:=\$${opt}_default}
 740     done
 741 }
 742
 743 is_in(){
 744     value=$1
 745     shift
 746     for var in $*; do
 747         [ $var = $value ] && return 0
 748     done
 749     return 1
 750 }
 751
 752 check_deps(){
 753     for cfg; do
 754         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 755         disabled ${cfg}_checking && continue
 756         enable ${cfg}_checking
 757
 758         eval dep_all="\$${cfg}_deps"
 759         eval dep_any="\$${cfg}_deps_any"
 760         eval dep_con="\$${cfg}_conflict"
 761         eval dep_sel="\$${cfg}_select"
 762         eval dep_sgs="\$${cfg}_suggest"
 763         eval dep_ifa="\$${cfg}_if"
 764         eval dep_ifn="\$${cfg}_if_any"
 765
 766         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 767         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 768         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 769
 770         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 771         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 772         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 773         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 774         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 775         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 776
 777         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 778
 779         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 780             # filter out library deps, these do not belong in extralibs
 781             is_in $dep $LIBRARY_LIST && continue
 782             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 783         done
 784
 785         disable ${cfg}_checking
 786     done
 787 }
 788
 789 print_config(){
 790     pfx=$1
 791     files=$2
 792     shift 2
 793     map 'eval echo "$v \${$v:-no}"' "$@" |
 794     awk "BEGIN { split(\"$files\", files) }
 795         {
 796             c = \"$pfx\" toupper(\$1);
 797             v = \$2;
 798             sub(/yes/, 1, v);
 799             sub(/no/,  0, v);
 800             for (f in files) {
 801                 file = files[f];
 802                 if (file ~ /\\.h\$/) {
 803                     printf(\"#define %s %d\\n\", c, v) >>file;
 804                 } else if (file ~ /\\.asm\$/) {
 805                     printf(\"%%define %s %d\\n\", c, v) >>file;
 806                 } else if (file ~ /\\.mak\$/) {
 807                     n = -v ? \"\" : \"!\";
 808                     printf(\"%s%s=yes\\n\", n, c) >>file;
 809                 } else if (file ~ /\\.texi\$/) {
 810                     pre = -v ? \"\" : \"@c \";
 811                     yesno = \$2;
 812                     c2 = tolower(c);
 813                     gsub(/_/, \"-\", c2);
 814                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 815                 }
 816             }
 817         }"
 818 }
 819
 820 print_enabled(){
 821     suf=$1
 822     shift
 823     for v; do
 824         enabled $v && printf "%s\n" ${v%$suf}
 825     done
 826 }
 827
 828 append(){
 829     var=$1
 830     shift
 831     eval "$var=\"\$$var $*\""
 832 }
 833
 834 prepend(){
 835     var=$1
 836     shift
 837     eval "$var=\"$* \$$var\""
 838 }
 839
 840 unique(){
 841     var=$1
 842     uniq_list=""
 843     for tok in $(eval echo \$$var); do
 844         uniq_list="$(filter_out $tok $uniq_list) $tok"
 845     done
 846     eval "$var=\"${uniq_list}\""
 847 }
 848
 849 resolve(){
 850     var=$1
 851     tmpvar=
 852     for entry in $(eval echo \$$var); do
 853         tmpvar="$tmpvar $(eval echo \$${entry})"
 854     done
 855     eval "$var=\"${tmpvar}\""
 856 }
 857
 858 add_cppflags(){
 859     append CPPFLAGS "$@"
 860 }
 861
 862 add_cflags(){
 863     append CFLAGS $($cflags_filter "$@")
 864 }
 865
 866 add_cflags_headers(){
 867     append CFLAGS_HEADERS $($cflags_filter "$@")
 868 }
 869
 870 add_cxxflags(){
 871     append CXXFLAGS $($cflags_filter "$@")
 872 }
 873
 874 add_asflags(){
 875     append ASFLAGS $($asflags_filter "$@")
 876 }
 877
 878 add_objcflags(){
 879     append OBJCFLAGS $($objcflags_filter "$@")
 880 }
 881
 882 add_ldflags(){
 883     append LDFLAGS $($ldflags_filter "$@")
 884 }
 885
 886 add_ldexeflags(){
 887     append LDEXEFLAGS $($ldflags_filter "$@")
 888 }
 889
 890 add_ldsoflags(){
 891     append LDSOFLAGS $($ldflags_filter "$@")
 892 }
 893
 894 add_stripflags(){
 895     append ASMSTRIPFLAGS "$@"
 896 }
 897
 898 add_extralibs(){
 899     prepend extralibs $($ldflags_filter "$@")
 900 }
 901
 902 add_host_cppflags(){
 903     append host_cppflags "$@"
 904 }
 905
 906 add_host_cflags(){
 907     append host_cflags $($host_cflags_filter "$@")
 908 }
 909
 910 add_host_ldflags(){
 911     append host_ldflags $($host_ldflags_filter "$@")
 912 }
 913
 914 add_compat(){
 915     append compat_objs $1
 916     shift
 917     map 'add_cppflags -D$v' "$@"
 918 }
 919
 920 test_cmd(){
 921     log "$@"
 922     "$@" >> $logfile 2>&1
 923 }
 924
 925 test_stat(){
 926     log test_stat "$@"
 927     stat "$1" >> $logfile 2>&1
 928 }
 929
 930 cc_o(){
 931     eval printf '%s\\n' $CC_O
 932 }
 933
 934 cc_e(){
 935     eval printf '%s\\n' $CC_E
 936 }
 937
 938 test_cc(){
 939     log test_cc "$@"
 940     cat > $TMPC
 941     log_file $TMPC
 942     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 943 }
 944
 945 test_cxx(){
 946     log test_cxx "$@"
 947     cat > $TMPCPP
 948     log_file $TMPCPP
 949     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 950 }
 951
 952 test_objcc(){
 953     log test_objcc "$@"
 954     cat > $TMPM
 955     log_file $TMPM
 956     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 957 }
 958
 959 test_cpp(){
 960     log test_cpp "$@"
 961     cat > $TMPC
 962     log_file $TMPC
 963     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 964 }
 965
 966 as_o(){
 967     eval printf '%s\\n' $AS_O
 968 }
 969
 970 test_as(){
 971     log test_as "$@"
 972     cat > $TMPS
 973     log_file $TMPS
 974     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 975 }
 976
 977 x86asm_o(){
 978     eval printf '%s\\n' $X86ASM_O
 979 }
 980
 981 test_x86asm(){
 982     log test_x86asm "$@"
 983     echo "$1" > $TMPASM
 984     log_file $TMPASM
 985     shift
 986     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
 987 }
 988
 989 check_cmd(){
 990     log check_cmd "$@"
 991     cmd=$1
 992     disabled $cmd && return
 993     disable $cmd
 994     test_cmd $@ && enable $cmd
 995 }
 996
 997 check_as(){
 998     log check_as "$@"
 999     name=$1
1000     code=$2
1001     shift 2
1002     disable $name
1003     test_as $@ <<EOF && enable $name
1004 $code
1005 EOF
1006 }
1007
1008 check_inline_asm(){
1009     log check_inline_asm "$@"
1010     name="$1"
1011     code="$2"
1012     shift 2
1013     disable $name
1014     test_cc "$@" <<EOF && enable $name
1015 void foo(void){ __asm__ volatile($code); }
1016 EOF
1017 }
1018
1019 check_inline_asm_flags(){
1020     log check_inline_asm_flags "$@"
1021     name="$1"
1022     code="$2"
1023     flags=''
1024     shift 2
1025     while [ "$1" != "" ]; do
1026       append flags $1
1027       shift
1028     done;
1029     disable $name
1030     cat > $TMPC <<EOF
1031 void foo(void){ __asm__ volatile($code); }
1032 EOF
1033     log_file $TMPC
1034     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1035     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1036 }
1037
1038 check_insn(){
1039     log check_insn "$@"
1040     check_inline_asm ${1}_inline "$2"
1041     check_as ${1}_external "$2"
1042 }
1043
1044 check_x86asm(){
1045     log check_x86asm "$@"
1046     name=$1
1047     shift
1048     disable $name
1049     test_x86asm "$@" && enable $name
1050 }
1051
1052 ld_o(){
1053     eval printf '%s\\n' $LD_O
1054 }
1055
1056 test_ld(){
1057     log test_ld "$@"
1058     type=$1
1059     shift 1
1060     flags=$(filter_out '-l*|*.so' $@)
1061     libs=$(filter '-l*|*.so' $@)
1062     test_$type $($cflags_filter $flags) || return
1063     flags=$($ldflags_filter $flags)
1064     libs=$($ldflags_filter $libs)
1065     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1066 }
1067
1068 check_ld(){
1069     log check_ld "$@"
1070     type=$1
1071     name=$2
1072     shift 2
1073     disable $name
1074     test_ld $type $@ && enable $name
1075 }
1076
1077 print_include(){
1078     hdr=$1
1079     test "${hdr%.h}" = "${hdr}" &&
1080         echo "#include $hdr"    ||
1081         echo "#include <$hdr>"
1082 }
1083
1084 test_code(){
1085     log test_code "$@"
1086     check=$1
1087     headers=$2
1088     code=$3
1089     shift 3
1090     {
1091         for hdr in $headers; do
1092             print_include $hdr
1093         done
1094         echo "int main(void) { $code; return 0; }"
1095     } | test_$check "$@"
1096 }
1097
1098 check_cppflags(){
1099     log check_cppflags "$@"
1100     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1101 #include <stdlib.h>
1102 EOF
1103 }
1104
1105 test_cflags(){
1106     log test_cflags "$@"
1107     set -- $($cflags_filter "$@")
1108     test_cc "$@" <<EOF
1109 int x;
1110 EOF
1111 }
1112
1113 check_cflags(){
1114     log check_cflags "$@"
1115     test_cflags "$@" && add_cflags "$@"
1116 }
1117
1118 check_cxxflags(){
1119     log check_cxxflags "$@"
1120     set -- $($cflags_filter "$@")
1121     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1122 int x;
1123 EOF
1124 }
1125
1126 test_objcflags(){
1127     log test_objcflags "$@"
1128     set -- $($objcflags_filter "$@")
1129     test_objcc "$@" <<EOF
1130 int x;
1131 EOF
1132 }
1133
1134 check_objcflags(){
1135     log check_objcflags "$@"
1136     test_objcflags "$@" && add_objcflags "$@"
1137 }
1138
1139 test_ldflags(){
1140     log test_ldflags "$@"
1141     set -- $($ldflags_filter "$@")
1142     test_ld "cc" "$@" <<EOF
1143 int main(void){ return 0; }
1144 EOF
1145 }
1146
1147 check_ldflags(){
1148     log check_ldflags "$@"
1149     test_ldflags "$@" && add_ldflags "$@"
1150 }
1151
1152 test_stripflags(){
1153     log test_stripflags "$@"
1154     # call test_cc to get a fresh TMPO
1155     test_cc <<EOF
1156 int main(void) { return 0; }
1157 EOF
1158     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1159 }
1160
1161 check_stripflags(){
1162     log check_stripflags "$@"
1163     test_stripflags "$@" && add_stripflags "$@"
1164 }
1165
1166 check_header(){
1167     log check_header "$@"
1168     headers=$1
1169     shift
1170     disable_sanitized $headers
1171     {
1172         for hdr in $headers; do
1173             print_include $hdr
1174         done
1175         echo "int x;"
1176     } | test_cpp "$@" && enable_sanitized $headers
1177 }
1178
1179 check_header_objcc(){
1180     log check_header_objcc "$@"
1181     rm -f -- "$TMPO"
1182     header=$1
1183     shift
1184     disable_sanitized $header
1185     {
1186        echo "#include <$header>"
1187        echo "int main(void) { return 0; }"
1188     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1189 }
1190
1191 check_apple_framework(){
1192     log check_apple_framework "$@"
1193     framework="$1"
1194     name="$(tolower $framework)"
1195     header="${framework}/${framework}.h"
1196     disable $name
1197     check_header_objcc $header &&
1198         enable $name && eval ${name}_extralibs='"-framework $framework"'
1199 }
1200
1201 check_func(){
1202     log check_func "$@"
1203     func=$1
1204     shift
1205     disable $func
1206     test_ld "cc" "$@" <<EOF && enable $func
1207 extern int $func();
1208 int main(void){ $func(); }
1209 EOF
1210 }
1211
1212 check_complexfunc(){
1213     log check_complexfunc "$@"
1214     func=$1
1215     narg=$2
1216     shift 2
1217     test $narg = 2 && args="f, g" || args="f * I"
1218     disable $func
1219     test_ld "cc" "$@" <<EOF && enable $func
1220 #include <complex.h>
1221 #include <math.h>
1222 float foo(complex float f, complex float g) { return $func($args); }
1223 int main(void){ return (int) foo; }
1224 EOF
1225 }
1226
1227 check_mathfunc(){
1228     log check_mathfunc "$@"
1229     func=$1
1230     narg=$2
1231     shift 2
1232     test $narg = 2 && args="f, g" || args="f"
1233     disable $func
1234     test_ld "cc" "$@" <<EOF && enable $func
1235 #include <math.h>
1236 float foo(float f, float g) { return $func($args); }
1237 int main(void){ return (int) foo; }
1238 EOF
1239 }
1240
1241 check_func_headers(){
1242     log check_func_headers "$@"
1243     headers=$1
1244     funcs=$2
1245     shift 2
1246     {
1247         for hdr in $headers; do
1248             print_include $hdr
1249         done
1250         echo "#include <stdint.h>"
1251         for func in $funcs; do
1252             echo "long check_$func(void) { return (long) $func; }"
1253         done
1254         echo "int main(void) { int ret = 0;"
1255         # LTO could optimize out the test functions without this
1256         for func in $funcs; do
1257             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1258         done
1259         echo "return ret; }"
1260     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1261 }
1262
1263 check_class_headers_cpp(){
1264     log check_class_headers_cpp "$@"
1265     headers=$1
1266     classes=$2
1267     shift 2
1268     {
1269         for hdr in $headers; do
1270             echo "#include <$hdr>"
1271         done
1272         echo "int main(void) { "
1273         i=1
1274         for class in $classes; do
1275             echo "$class obj$i;"
1276             i=$(expr $i + 1)
1277         done
1278         echo "return 0; }"
1279     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1280 }
1281
1282 test_cpp_condition(){
1283     log test_cpp_condition "$@"
1284     header=$1
1285     condition=$2
1286     shift 2
1287     test_cpp "$@" <<EOF
1288 #include <$header>
1289 #if !($condition)
1290 #error "unsatisfied condition: $condition"
1291 #endif
1292 EOF
1293 }
1294
1295 check_cpp_condition(){
1296     log check_cpp_condition "$@"
1297     name=$1
1298     shift 1
1299     disable $name
1300     test_cpp_condition "$@" && enable $name
1301 }
1302
1303 test_cflags_cc(){
1304     log test_cflags_cc "$@"
1305     flags=$1
1306     header=$2
1307     condition=$3
1308     shift 3
1309     set -- $($cflags_filter "$flags")
1310     test_cc "$@" <<EOF
1311 #include <$header>
1312 #if !($condition)
1313 #error "unsatisfied condition: $condition"
1314 #endif
1315 EOF
1316 }
1317
1318 check_lib(){
1319     log check_lib "$@"
1320     name="$1"
1321     headers="$2"
1322     funcs="$3"
1323     shift 3
1324     disable $name
1325     check_func_headers "$headers" "$funcs" "$@" &&
1326         enable $name && eval ${name}_extralibs="\$@"
1327 }
1328
1329 check_lib_cpp(){
1330     log check_lib_cpp "$@"
1331     name="$1"
1332     headers="$2"
1333     classes="$3"
1334     shift 3
1335     disable $name
1336     check_class_headers_cpp "$headers" "$classes" "$@" &&
1337         enable $name && eval ${name}_extralibs="\$@"
1338 }
1339
1340 test_pkg_config(){
1341     log test_pkg_config "$@"
1342     name="$1"
1343     pkg_version="$2"
1344     pkg="${2%% *}"
1345     headers="$3"
1346     funcs="$4"
1347     shift 4
1348     disable $name
1349     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1350     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1351     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1352     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1353         enable $name &&
1354         set_sanitized "${name}_cflags"    $pkg_cflags &&
1355         set_sanitized "${name}_extralibs" $pkg_libs
1356 }
1357
1358 check_pkg_config(){
1359     log check_pkg_config "$@"
1360     name="$1"
1361     test_pkg_config "$@" &&
1362         eval add_cflags \$${name}_cflags
1363 }
1364
1365 test_exec(){
1366     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1367 }
1368
1369 check_exec_crash(){
1370     log check_exec_crash "$@"
1371     code=$(cat)
1372
1373     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1374     # are safe but may not be available everywhere.  Thus we use
1375     # raise(SIGTERM) instead.  The check is run in a subshell so we
1376     # can redirect the "Terminated" message from the shell.  SIGBUS
1377     # is not defined by standard C so it is used conditionally.
1378
1379     (test_exec "$@") >> $logfile 2>&1 <<EOF
1380 #include <signal.h>
1381 static void sighandler(int sig){
1382     raise(SIGTERM);
1383 }
1384 int foo(void){
1385     $code
1386 }
1387 int (*func_ptr)(void) = foo;
1388 int main(void){
1389     signal(SIGILL, sighandler);
1390     signal(SIGFPE, sighandler);
1391     signal(SIGSEGV, sighandler);
1392 #ifdef SIGBUS
1393     signal(SIGBUS, sighandler);
1394 #endif
1395     return func_ptr();
1396 }
1397 EOF
1398 }
1399
1400 check_type(){
1401     log check_type "$@"
1402     headers=$1
1403     type=$2
1404     shift 2
1405     disable_sanitized "$type"
1406     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1407 }
1408
1409 check_struct(){
1410     log check_struct "$@"
1411     headers=$1
1412     struct=$2
1413     member=$3
1414     shift 3
1415     disable_sanitized "${struct}_${member}"
1416     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1417         enable_sanitized "${struct}_${member}"
1418 }
1419
1420 check_builtin(){
1421     log check_builtin "$@"
1422     name=$1
1423     headers=$2
1424     builtin=$3
1425     shift 3
1426     disable "$name"
1427     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1428 }
1429
1430 check_compile_assert(){
1431     log check_compile_assert "$@"
1432     name=$1
1433     headers=$2
1434     condition=$3
1435     shift 3
1436     disable "$name"
1437     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1438 }
1439
1440 check_cc(){
1441     log check_cc "$@"
1442     name=$1
1443     shift
1444     disable "$name"
1445     test_code cc "$@" && enable "$name"
1446 }
1447
1448 require(){
1449     log require "$@"
1450     name_version="$1"
1451     name="${1%% *}"
1452     shift
1453     check_lib $name "$@" || die "ERROR: $name_version not found"
1454 }
1455
1456 require_cc(){
1457     log require_cc "$@"
1458     name="$1"
1459     shift
1460     test_code cc "$@" || die "ERROR: $name failed"
1461 }
1462
1463 require_cpp(){
1464     name="$1"
1465     headers="$2"
1466     classes="$3"
1467     shift 3
1468     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1469 }
1470
1471 require_header(){
1472     log require_header "$@"
1473     headers="$1"
1474     check_header "$@" || die "ERROR: $headers not found"
1475 }
1476
1477 require_cpp_condition(){
1478     log require_cpp_condition "$@"
1479     condition="$2"
1480     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1481 }
1482
1483 require_pkg_config(){
1484     log require_pkg_config "$@"
1485     pkg_version="$2"
1486     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1487 }
1488
1489 hostcc_e(){
1490     eval printf '%s\\n' $HOSTCC_E
1491 }
1492
1493 hostcc_o(){
1494     eval printf '%s\\n' $HOSTCC_O
1495 }
1496
1497 test_host_cc(){
1498     log test_host_cc "$@"
1499     cat > $TMPC
1500     log_file $TMPC
1501     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1502 }
1503
1504 test_host_cpp(){
1505     log test_host_cpp "$@"
1506     cat > $TMPC
1507     log_file $TMPC
1508     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1509 }
1510
1511 check_host_cppflags(){
1512     log check_host_cppflags "$@"
1513     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1514 #include <stdlib.h>
1515 EOF
1516 }
1517
1518 check_host_cflags(){
1519     log check_host_cflags "$@"
1520     set -- $($host_cflags_filter "$@")
1521     test_host_cc "$@" <<EOF && append host_cflags "$@"
1522 int x;
1523 EOF
1524 }
1525
1526 test_host_cpp_condition(){
1527     log test_host_cpp_condition "$@"
1528     header=$1
1529     condition=$2
1530     shift 2
1531     test_host_cpp "$@" <<EOF
1532 #include <$header>
1533 #if !($condition)
1534 #error "unsatisfied condition: $condition"
1535 #endif
1536 EOF
1537 }
1538
1539 check_host_cpp_condition(){
1540     log check_host_cpp_condition "$@"
1541     name=$1
1542     shift 1
1543     disable $name
1544     test_host_cpp_condition "$@" && enable $name
1545 }
1546
1547 cp_if_changed(){
1548     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1549     mkdir -p "$(dirname $2)"
1550     cp -f "$1" "$2"
1551 }
1552
1553 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1554 # system-dependent things.
1555
1556 AVCODEC_COMPONENTS="
1557     bsfs
1558     decoders
1559     encoders
1560     hwaccels
1561     parsers
1562 "
1563
1564 AVDEVICE_COMPONENTS="
1565     indevs
1566     outdevs
1567 "
1568
1569 AVFILTER_COMPONENTS="
1570     filters
1571 "
1572
1573 AVFORMAT_COMPONENTS="
1574     demuxers
1575     muxers
1576     protocols
1577 "
1578
1579 COMPONENT_LIST="
1580     $AVCODEC_COMPONENTS
1581     $AVDEVICE_COMPONENTS
1582     $AVFILTER_COMPONENTS
1583     $AVFORMAT_COMPONENTS
1584 "
1585
1586 EXAMPLE_LIST="
1587     avio_dir_cmd_example
1588     avio_reading_example
1589     decode_audio_example
1590     decode_video_example
1591     demuxing_decoding_example
1592     encode_audio_example
1593     encode_video_example
1594     extract_mvs_example
1595     filter_audio_example
1596     filtering_audio_example
1597     filtering_video_example
1598     http_multiclient_example
1599     hw_decode_example
1600     metadata_example
1601     muxing_example
1602     qsvdec_example
1603     remuxing_example
1604     resampling_audio_example
1605     scaling_video_example
1606     transcode_aac_example
1607     transcoding_example
1608     vaapi_encode_example
1609     vaapi_transcode_example
1610 "
1611
1612 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1613     alsa
1614     appkit
1615     avfoundation
1616     bzlib
1617     coreimage
1618     iconv
1619     libxcb
1620     libxcb_shm
1621     libxcb_shape
1622     libxcb_xfixes
1623     lzma
1624     schannel
1625     sdl2
1626     securetransport
1627     sndio
1628     xlib
1629     zlib
1630 "
1631
1632 EXTERNAL_LIBRARY_GPL_LIST="
1633     avisynth
1634     frei0r
1635     libcdio
1636     librubberband
1637     libvidstab
1638     libx264
1639     libx265
1640     libxavs
1641     libxvid
1642 "
1643
1644 EXTERNAL_LIBRARY_NONFREE_LIST="
1645     decklink
1646     libndi_newtek
1647     libfdk_aac
1648     openssl
1649     libtls
1650 "
1651
1652 EXTERNAL_LIBRARY_VERSION3_LIST="
1653     gmp
1654     libopencore_amrnb
1655     libopencore_amrwb
1656     libvmaf
1657     libvo_amrwbenc
1658     rkmpp
1659 "
1660
1661 EXTERNAL_LIBRARY_GPLV3_LIST="
1662     libsmbclient
1663 "
1664
1665 EXTERNAL_LIBRARY_LIST="
1666     $EXTERNAL_LIBRARY_GPL_LIST
1667     $EXTERNAL_LIBRARY_NONFREE_LIST
1668     $EXTERNAL_LIBRARY_VERSION3_LIST
1669     $EXTERNAL_LIBRARY_GPLV3_LIST
1670     chromaprint
1671     gcrypt
1672     gnutls
1673     jni
1674     ladspa
1675     libaom
1676     libass
1677     libbluray
1678     libbs2b
1679     libcaca
1680     libcelt
1681     libcodec2
1682     libdc1394
1683     libdrm
1684     libflite
1685     libfontconfig
1686     libfreetype
1687     libfribidi
1688     libgme
1689     libgsm
1690     libiec61883
1691     libilbc
1692     libjack
1693     libkvazaar
1694     libmodplug
1695     libmp3lame
1696     libmysofa
1697     libopencv
1698     libopenh264
1699     libopenjpeg
1700     libopenmpt
1701     libopus
1702     libpulse
1703     librsvg
1704     librtmp
1705     libshine
1706     libsmbclient
1707     libsnappy
1708     libsoxr
1709     libspeex
1710     libsrt
1711     libssh
1712     libtesseract
1713     libtheora
1714     libtwolame
1715     libv4l2
1716     libvorbis
1717     libvpx
1718     libwavpack
1719     libwebp
1720     libxml2
1721     libzimg
1722     libzmq
1723     libzvbi
1724     lv2
1725     mediacodec
1726     openal
1727     opengl
1728     vapoursynth
1729 "
1730
1731 HWACCEL_AUTODETECT_LIBRARY_LIST="
1732     amf
1733     audiotoolbox
1734     crystalhd
1735     cuda
1736     cuvid
1737     d3d11va
1738     dxva2
1739     ffnvcodec
1740     nvdec
1741     nvenc
1742     vaapi
1743     vdpau
1744     videotoolbox
1745     v4l2_m2m
1746     xvmc
1747 "
1748
1749 # catchall list of things that require external libs to link
1750 EXTRALIBS_LIST="
1751     cpu_init
1752     cws2fws
1753 "
1754
1755 HWACCEL_LIBRARY_NONFREE_LIST="
1756     cuda_sdk
1757     libnpp
1758 "
1759
1760 HWACCEL_LIBRARY_LIST="
1761     $HWACCEL_LIBRARY_NONFREE_LIST
1762     libmfx
1763     mmal
1764     omx
1765     opencl
1766 "
1767
1768 DOCUMENT_LIST="
1769     doc
1770     htmlpages
1771     manpages
1772     podpages
1773     txtpages
1774 "
1775
1776 FEATURE_LIST="
1777     ftrapv
1778     gray
1779     hardcoded_tables
1780     omx_rpi
1781     runtime_cpudetect
1782     safe_bitstream_reader
1783     shared
1784     small
1785     static
1786     swscale_alpha
1787 "
1788
1789 LIBRARY_LIST="
1790     avcodec
1791     avdevice
1792     avfilter
1793     avformat
1794     avresample
1795     avutil
1796     postproc
1797     swresample
1798     swscale
1799 "
1800
1801 LICENSE_LIST="
1802     gpl
1803     nonfree
1804     version3
1805 "
1806
1807 PROGRAM_LIST="
1808     ffplay
1809     ffprobe
1810     ffmpeg
1811 "
1812
1813 SUBSYSTEM_LIST="
1814     dct
1815     dwt
1816     error_resilience
1817     faan
1818     fast_unaligned
1819     fft
1820     lsp
1821     lzo
1822     mdct
1823     pixelutils
1824     network
1825     rdft
1826 "
1827
1828 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1829 CONFIG_LIST="
1830     $DOCUMENT_LIST
1831     $EXAMPLE_LIST
1832     $EXTERNAL_LIBRARY_LIST
1833     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1834     $HWACCEL_LIBRARY_LIST
1835     $HWACCEL_AUTODETECT_LIBRARY_LIST
1836     $FEATURE_LIST
1837     $LICENSE_LIST
1838     $LIBRARY_LIST
1839     $PROGRAM_LIST
1840     $SUBSYSTEM_LIST
1841     autodetect
1842     fontconfig
1843     linux_perf
1844     memory_poisoning
1845     neon_clobber_test
1846     ossfuzz
1847     pic
1848     thumb
1849     valgrind_backtrace
1850     xmm_clobber_test
1851     $COMPONENT_LIST
1852 "
1853
1854 THREADS_LIST="
1855     pthreads
1856     os2threads
1857     w32threads
1858 "
1859
1860 ATOMICS_LIST="
1861     atomics_gcc
1862     atomics_suncc
1863     atomics_win32
1864 "
1865
1866 AUTODETECT_LIBS="
1867     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1868     $HWACCEL_AUTODETECT_LIBRARY_LIST
1869     $THREADS_LIST
1870 "
1871
1872 ARCH_LIST="
1873     aarch64
1874     alpha
1875     arm
1876     avr32
1877     avr32_ap
1878     avr32_uc
1879     bfin
1880     ia64
1881     m68k
1882     mips
1883     mips64
1884     parisc
1885     ppc
1886     ppc64
1887     s390
1888     sh4
1889     sparc
1890     sparc64
1891     tilegx
1892     tilepro
1893     tomi
1894     x86
1895     x86_32
1896     x86_64
1897 "
1898
1899 ARCH_EXT_LIST_ARM="
1900     armv5te
1901     armv6
1902     armv6t2
1903     armv8
1904     neon
1905     vfp
1906     vfpv3
1907     setend
1908 "
1909
1910 ARCH_EXT_LIST_MIPS="
1911     mipsfpu
1912     mips32r2
1913     mips32r5
1914     mips64r2
1915     mips32r6
1916     mips64r6
1917     mipsdsp
1918     mipsdspr2
1919     msa
1920 "
1921
1922 ARCH_EXT_LIST_LOONGSON="
1923     loongson2
1924     loongson3
1925     mmi
1926 "
1927
1928 ARCH_EXT_LIST_X86_SIMD="
1929     aesni
1930     amd3dnow
1931     amd3dnowext
1932     avx
1933     avx2
1934     avx512
1935     fma3
1936     fma4
1937     mmx
1938     mmxext
1939     sse
1940     sse2
1941     sse3
1942     sse4
1943     sse42
1944     ssse3
1945     xop
1946 "
1947
1948 ARCH_EXT_LIST_PPC="
1949     altivec
1950     dcbzl
1951     ldbrx
1952     power8
1953     ppc4xx
1954     vsx
1955 "
1956
1957 ARCH_EXT_LIST_X86="
1958     $ARCH_EXT_LIST_X86_SIMD
1959     cpunop
1960     i686
1961 "
1962
1963 ARCH_EXT_LIST="
1964     $ARCH_EXT_LIST_ARM
1965     $ARCH_EXT_LIST_PPC
1966     $ARCH_EXT_LIST_X86
1967     $ARCH_EXT_LIST_MIPS
1968     $ARCH_EXT_LIST_LOONGSON
1969 "
1970
1971 ARCH_FEATURES="
1972     aligned_stack
1973     fast_64bit
1974     fast_clz
1975     fast_cmov
1976     local_aligned
1977     simd_align_16
1978     simd_align_32
1979     simd_align_64
1980 "
1981
1982 BUILTIN_LIST="
1983     atomic_cas_ptr
1984     machine_rw_barrier
1985     MemoryBarrier
1986     mm_empty
1987     rdtsc
1988     sem_timedwait
1989     sync_val_compare_and_swap
1990 "
1991 HAVE_LIST_CMDLINE="
1992     inline_asm
1993     symver
1994     x86asm
1995 "
1996
1997 HAVE_LIST_PUB="
1998     bigendian
1999     fast_unaligned
2000 "
2001
2002 HEADERS_LIST="
2003     arpa_inet_h
2004     asm_types_h
2005     cdio_paranoia_h
2006     cdio_paranoia_paranoia_h
2007     cuda_h
2008     dispatch_dispatch_h
2009     dev_bktr_ioctl_bt848_h
2010     dev_bktr_ioctl_meteor_h
2011     dev_ic_bt8xx_h
2012     dev_video_bktr_ioctl_bt848_h
2013     dev_video_meteor_ioctl_meteor_h
2014     direct_h
2015     dirent_h
2016     dxgidebug_h
2017     dxva_h
2018     ES2_gl_h
2019     gsm_h
2020     io_h
2021     linux_perf_event_h
2022     machine_ioctl_bt848_h
2023     machine_ioctl_meteor_h
2024     malloc_h
2025     opencv2_core_core_c_h
2026     OpenGL_gl3_h
2027     poll_h
2028     sys_param_h
2029     sys_resource_h
2030     sys_select_h
2031     sys_soundcard_h
2032     sys_time_h
2033     sys_un_h
2034     sys_videoio_h
2035     termios_h
2036     udplite_h
2037     unistd_h
2038     valgrind_valgrind_h
2039     windows_h
2040     winsock2_h
2041 "
2042
2043 INTRINSICS_LIST="
2044     intrinsics_neon
2045 "
2046
2047 COMPLEX_FUNCS="
2048     cabs
2049     cexp
2050 "
2051
2052 MATH_FUNCS="
2053     atanf
2054     atan2f
2055     cbrt
2056     cbrtf
2057     copysign
2058     cosf
2059     erf
2060     exp2
2061     exp2f
2062     expf
2063     hypot
2064     isfinite
2065     isinf
2066     isnan
2067     ldexpf
2068     llrint
2069     llrintf
2070     log2
2071     log2f
2072     log10f
2073     lrint
2074     lrintf
2075     powf
2076     rint
2077     round
2078     roundf
2079     sinf
2080     trunc
2081     truncf
2082 "
2083
2084 SYSTEM_FEATURES="
2085     dos_paths
2086     libc_msvcrt
2087     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2088     section_data_rel_ro
2089     threads
2090     uwp
2091     winrt
2092 "
2093
2094 SYSTEM_FUNCS="
2095     access
2096     aligned_malloc
2097     arc4random
2098     clock_gettime
2099     closesocket
2100     CommandLineToArgvW
2101     fcntl
2102     getaddrinfo
2103     gethrtime
2104     getopt
2105     GetProcessAffinityMask
2106     GetProcessMemoryInfo
2107     GetProcessTimes
2108     getrusage
2109     GetSystemTimeAsFileTime
2110     gettimeofday
2111     glob
2112     glXGetProcAddress
2113     gmtime_r
2114     inet_aton
2115     isatty
2116     kbhit
2117     localtime_r
2118     lstat
2119     lzo1x_999_compress
2120     mach_absolute_time
2121     MapViewOfFile
2122     memalign
2123     mkstemp
2124     mmap
2125     mprotect
2126     nanosleep
2127     PeekNamedPipe
2128     posix_memalign
2129     pthread_cancel
2130     sched_getaffinity
2131     SecItemImport
2132     SetConsoleTextAttribute
2133     SetConsoleCtrlHandler
2134     setmode
2135     setrlimit
2136     Sleep
2137     strerror_r
2138     sysconf
2139     sysctl
2140     usleep
2141     UTGetOSTypeFromString
2142     VirtualAlloc
2143     wglGetProcAddress
2144 "
2145
2146 SYSTEM_LIBRARIES="
2147     bcrypt
2148     vaapi_drm
2149     vaapi_x11
2150     vdpau_x11
2151 "
2152
2153 TOOLCHAIN_FEATURES="
2154     as_arch_directive
2155     as_dn_directive
2156     as_fpu_directive
2157     as_func
2158     as_object_arch
2159     asm_mod_q
2160     blocks_extension
2161     ebp_available
2162     ebx_available
2163     gnu_as
2164     gnu_windres
2165     ibm_asm
2166     inline_asm_direct_symbol_refs
2167     inline_asm_labels
2168     inline_asm_nonlocal_labels
2169     pragma_deprecated
2170     rsync_contimeout
2171     symver_asm_label
2172     symver_gnu_asm
2173     vfp_args
2174     xform_asm
2175     xmm_clobbers
2176 "
2177
2178 TYPES_LIST="
2179     kCMVideoCodecType_HEVC
2180     socklen_t
2181     struct_addrinfo
2182     struct_group_source_req
2183     struct_ip_mreq_source
2184     struct_ipv6_mreq
2185     struct_msghdr_msg_flags
2186     struct_pollfd
2187     struct_rusage_ru_maxrss
2188     struct_sctp_event_subscribe
2189     struct_sockaddr_in6
2190     struct_sockaddr_sa_len
2191     struct_sockaddr_storage
2192     struct_stat_st_mtim_tv_nsec
2193     struct_v4l2_frmivalenum_discrete
2194 "
2195
2196 HAVE_LIST="
2197     $ARCH_EXT_LIST
2198     $(add_suffix _external $ARCH_EXT_LIST)
2199     $(add_suffix _inline   $ARCH_EXT_LIST)
2200     $ARCH_FEATURES
2201     $BUILTIN_LIST
2202     $COMPLEX_FUNCS
2203     $HAVE_LIST_CMDLINE
2204     $HAVE_LIST_PUB
2205     $HEADERS_LIST
2206     $INTRINSICS_LIST
2207     $MATH_FUNCS
2208     $SYSTEM_FEATURES
2209     $SYSTEM_FUNCS
2210     $SYSTEM_LIBRARIES
2211     $THREADS_LIST
2212     $TOOLCHAIN_FEATURES
2213     $TYPES_LIST
2214     makeinfo
2215     makeinfo_html
2216     opencl_d3d11
2217     opencl_drm_arm
2218     opencl_drm_beignet
2219     opencl_dxva2
2220     opencl_vaapi_beignet
2221     opencl_vaapi_intel_media
2222     perl
2223     pod2man
2224     texi2html
2225 "
2226
2227 # options emitted with CONFIG_ prefix but not available on the command line
2228 CONFIG_EXTRA="
2229     aandcttables
2230     ac3dsp
2231     adts_header
2232     audio_frame_queue
2233     audiodsp
2234     blockdsp
2235     bswapdsp
2236     cabac
2237     cbs
2238     cbs_h264
2239     cbs_h265
2240     cbs_mpeg2
2241     cbs_vp9
2242     dirac_parse
2243     dvprofile
2244     exif
2245     faandct
2246     faanidct
2247     fdctdsp
2248     flacdsp
2249     fmtconvert
2250     frame_thread_encoder
2251     g722dsp
2252     golomb
2253     gplv3
2254     h263dsp
2255     h264chroma
2256     h264dsp
2257     h264parse
2258     h264pred
2259     h264qpel
2260     hevcparse
2261     hpeldsp
2262     huffman
2263     huffyuvdsp
2264     huffyuvencdsp
2265     idctdsp
2266     iirfilter
2267     mdct15
2268     intrax8
2269     iso_media
2270     ividsp
2271     jpegtables
2272     lgplv3
2273     libx262
2274     llauddsp
2275     llviddsp
2276     llvidencdsp
2277     lpc
2278     lzf
2279     me_cmp
2280     mpeg_er
2281     mpegaudio
2282     mpegaudiodsp
2283     mpegaudioheader
2284     mpegvideo
2285     mpegvideoenc
2286     mss34dsp
2287     pixblockdsp
2288     qpeldsp
2289     qsv
2290     qsvdec
2291     qsvenc
2292     qsvvpp
2293     rangecoder
2294     riffdec
2295     riffenc
2296     rtpdec
2297     rtpenc_chain
2298     rv34dsp
2299     sinewin
2300     snappy
2301     srtp
2302     startcode
2303     texturedsp
2304     texturedspenc
2305     tpeldsp
2306     vaapi_1
2307     vaapi_encode
2308     vc1dsp
2309     videodsp
2310     vp3dsp
2311     vp56dsp
2312     vp8dsp
2313     wma_freqs
2314     wmv2dsp
2315 "
2316
2317 CMDLINE_SELECT="
2318     $ARCH_EXT_LIST
2319     $CONFIG_LIST
2320     $HAVE_LIST_CMDLINE
2321     $THREADS_LIST
2322     asm
2323     cross_compile
2324     debug
2325     extra_warnings
2326     logging
2327     lto
2328     optimizations
2329     rpath
2330     stripping
2331 "
2332
2333 PATHS_LIST="
2334     bindir
2335     datadir
2336     docdir
2337     incdir
2338     libdir
2339     mandir
2340     pkgconfigdir
2341     prefix
2342     shlibdir
2343     install_name_dir
2344 "
2345
2346 CMDLINE_SET="
2347     $PATHS_LIST
2348     ar
2349     arch
2350     as
2351     assert_level
2352     build_suffix
2353     cc
2354     objcc
2355     cpu
2356     cross_prefix
2357     custom_allocator
2358     cxx
2359     dep_cc
2360     doxygen
2361     env
2362     extra_version
2363     gas
2364     host_cc
2365     host_cflags
2366     host_extralibs
2367     host_ld
2368     host_ldflags
2369     host_os
2370     ignore_tests
2371     install
2372     ld
2373     ln_s
2374     logfile
2375     malloc_prefix
2376     nm
2377     optflags
2378     nvcc
2379     nvccflags
2380     pkg_config
2381     pkg_config_flags
2382     progs_suffix
2383     random_seed
2384     ranlib
2385     samples
2386     strip
2387     sws_max_filter_size
2388     sysinclude
2389     sysroot
2390     target_exec
2391     target_os
2392     target_path
2393     target_samples
2394     tempprefix
2395     toolchain
2396     valgrind
2397     x86asmexe
2398 "
2399
2400 CMDLINE_APPEND="
2401     extra_cflags
2402     extra_cxxflags
2403     extra_objcflags
2404     host_cppflags
2405 "
2406
2407 # code dependency declarations
2408
2409 # architecture extensions
2410
2411 armv5te_deps="arm"
2412 armv6_deps="arm"
2413 armv6t2_deps="arm"
2414 armv8_deps="aarch64"
2415 neon_deps_any="aarch64 arm"
2416 intrinsics_neon_deps="neon"
2417 vfp_deps_any="aarch64 arm"
2418 vfpv3_deps="vfp"
2419 setend_deps="arm"
2420
2421 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2422
2423 altivec_deps="ppc"
2424 dcbzl_deps="ppc"
2425 ldbrx_deps="ppc"
2426 ppc4xx_deps="ppc"
2427 vsx_deps="altivec"
2428 power8_deps="vsx"
2429
2430 loongson2_deps="mips"
2431 loongson3_deps="mips"
2432 mips32r2_deps="mips"
2433 mips32r5_deps="mips"
2434 mips32r6_deps="mips"
2435 mips64r2_deps="mips"
2436 mips64r6_deps="mips"
2437 mipsfpu_deps="mips"
2438 mipsdsp_deps="mips"
2439 mipsdspr2_deps="mips"
2440 mmi_deps="mips"
2441 msa_deps="mipsfpu"
2442
2443 cpunop_deps="i686"
2444 x86_64_select="i686"
2445 x86_64_suggest="fast_cmov"
2446
2447 amd3dnow_deps="mmx"
2448 amd3dnowext_deps="amd3dnow"
2449 i686_deps="x86"
2450 mmx_deps="x86"
2451 mmxext_deps="mmx"
2452 sse_deps="mmxext"
2453 sse2_deps="sse"
2454 sse3_deps="sse2"
2455 ssse3_deps="sse3"
2456 sse4_deps="ssse3"
2457 sse42_deps="sse4"
2458 aesni_deps="sse42"
2459 avx_deps="sse42"
2460 xop_deps="avx"
2461 fma3_deps="avx"
2462 fma4_deps="avx"
2463 avx2_deps="avx"
2464 avx512_deps="avx2"
2465
2466 mmx_external_deps="x86asm"
2467 mmx_inline_deps="inline_asm x86"
2468 mmx_suggest="mmx_external mmx_inline"
2469
2470 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2471     eval dep=\$${ext}_deps
2472     eval ${ext}_external_deps='"${dep}_external"'
2473     eval ${ext}_inline_deps='"${dep}_inline"'
2474     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2475 done
2476
2477 aligned_stack_if_any="aarch64 ppc x86"
2478 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2479 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2480 fast_unaligned_if_any="aarch64 ppc x86"
2481 simd_align_16_if_any="altivec neon sse"
2482 simd_align_32_if_any="avx"
2483 simd_align_64_if_any="avx512"
2484
2485 # system capabilities
2486 linux_perf_deps="linux_perf_event_h"
2487 symver_if_any="symver_asm_label symver_gnu_asm"
2488 valgrind_backtrace_conflict="optimizations"
2489 valgrind_backtrace_deps="valgrind_valgrind_h"
2490
2491 # threading support
2492 atomics_gcc_if="sync_val_compare_and_swap"
2493 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2494 atomics_win32_if="MemoryBarrier"
2495 atomics_native_if_any="$ATOMICS_LIST"
2496 w32threads_deps="atomics_native"
2497 threads_if_any="$THREADS_LIST"
2498
2499 # subsystems
2500 cbs_h264_select="cbs golomb"
2501 cbs_h265_select="cbs golomb"
2502 cbs_mpeg2_select="cbs"
2503 cbs_vp9_select="cbs"
2504 dct_select="rdft"
2505 dirac_parse_select="golomb"
2506 error_resilience_select="me_cmp"
2507 faandct_deps="faan"
2508 faandct_select="fdctdsp"
2509 faanidct_deps="faan"
2510 faanidct_select="idctdsp"
2511 h264dsp_select="startcode"
2512 hevcparse_select="golomb"
2513 frame_thread_encoder_deps="encoders threads"
2514 intrax8_select="blockdsp idctdsp"
2515 mdct_select="fft"
2516 mdct15_select="fft"
2517 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2518 mpeg_er_select="error_resilience"
2519 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2520 mpegaudiodsp_select="dct"
2521 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2522 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2523 vc1dsp_select="h264chroma qpeldsp startcode"
2524 rdft_select="fft"
2525
2526 # decoders / encoders
2527 aac_decoder_select="adts_header mdct15 mdct sinewin"
2528 aac_fixed_decoder_select="adts_header mdct sinewin"
2529 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2530 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2531 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2532 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2533 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2534 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2535 adpcm_g722_decoder_select="g722dsp"
2536 adpcm_g722_encoder_select="g722dsp"
2537 aic_decoder_select="golomb idctdsp"
2538 alac_encoder_select="lpc"
2539 als_decoder_select="bswapdsp"
2540 amrnb_decoder_select="lsp"
2541 amrwb_decoder_select="lsp"
2542 amv_decoder_select="sp5x_decoder exif"
2543 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2544 ape_decoder_select="bswapdsp llauddsp"
2545 apng_decoder_deps="zlib"
2546 apng_encoder_deps="zlib"
2547 apng_encoder_select="llvidencdsp"
2548 aptx_decoder_select="audio_frame_queue"
2549 aptx_encoder_select="audio_frame_queue"
2550 aptx_hd_decoder_select="audio_frame_queue"
2551 aptx_hd_encoder_select="audio_frame_queue"
2552 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2553 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2554 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2555 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2556 atrac1_decoder_select="mdct sinewin"
2557 atrac3_decoder_select="mdct"
2558 atrac3p_decoder_select="mdct sinewin"
2559 avrn_decoder_select="exif jpegtables"
2560 bink_decoder_select="blockdsp hpeldsp"
2561 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2562 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2563 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2564 clearvideo_decoder_select="idctdsp"
2565 cllc_decoder_select="bswapdsp"
2566 comfortnoise_encoder_select="lpc"
2567 cook_decoder_select="audiodsp mdct sinewin"
2568 cscd_decoder_select="lzo"
2569 cscd_decoder_suggest="zlib"
2570 dca_decoder_select="mdct"
2571 dds_decoder_select="texturedsp"
2572 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2573 dnxhd_decoder_select="blockdsp idctdsp"
2574 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2575 dolby_e_decoder_select="mdct"
2576 dvvideo_decoder_select="dvprofile idctdsp"
2577 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2578 dxa_decoder_deps="zlib"
2579 dxv_decoder_select="lzf texturedsp"
2580 eac3_decoder_select="ac3_decoder"
2581 eac3_encoder_select="ac3_encoder"
2582 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2583 eatgq_decoder_select="aandcttables"
2584 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2585 exr_decoder_deps="zlib"
2586 ffv1_decoder_select="rangecoder"
2587 ffv1_encoder_select="rangecoder"
2588 ffvhuff_decoder_select="huffyuv_decoder"
2589 ffvhuff_encoder_select="huffyuv_encoder"
2590 fic_decoder_select="golomb"
2591 flac_decoder_select="flacdsp"
2592 flac_encoder_select="bswapdsp flacdsp lpc"
2593 flashsv2_decoder_deps="zlib"
2594 flashsv2_encoder_deps="zlib"
2595 flashsv_decoder_deps="zlib"
2596 flashsv_encoder_deps="zlib"
2597 flv_decoder_select="h263_decoder"
2598 flv_encoder_select="h263_encoder"
2599 fourxm_decoder_select="blockdsp bswapdsp"
2600 fraps_decoder_select="bswapdsp huffman"
2601 g2m_decoder_deps="zlib"
2602 g2m_decoder_select="blockdsp idctdsp jpegtables"
2603 g729_decoder_select="audiodsp"
2604 h261_decoder_select="mpegvideo"
2605 h261_encoder_select="aandcttables mpegvideoenc"
2606 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2607 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2608 h263i_decoder_select="h263_decoder"
2609 h263p_decoder_select="h263_decoder"
2610 h263p_encoder_select="h263_encoder"
2611 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2612 h264_decoder_suggest="error_resilience"
2613 hap_decoder_select="snappy texturedsp"
2614 hap_encoder_deps="libsnappy"
2615 hap_encoder_select="texturedspenc"
2616 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2617 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2618 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2619 iac_decoder_select="imc_decoder"
2620 imc_decoder_select="bswapdsp fft mdct sinewin"
2621 indeo3_decoder_select="hpeldsp"
2622 indeo4_decoder_select="ividsp"
2623 indeo5_decoder_select="ividsp"
2624 interplay_video_decoder_select="hpeldsp"
2625 jpegls_decoder_select="mjpeg_decoder"
2626 jv_decoder_select="blockdsp"
2627 lagarith_decoder_select="llviddsp"
2628 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2629 magicyuv_decoder_select="llviddsp"
2630 magicyuv_encoder_select="llvidencdsp"
2631 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2632 metasound_decoder_select="lsp mdct sinewin"
2633 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2634 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2635 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2636 mjpegb_decoder_select="mjpeg_decoder"
2637 mlp_decoder_select="mlp_parser"
2638 mlp_encoder_select="lpc"
2639 motionpixels_decoder_select="bswapdsp"
2640 mp1_decoder_select="mpegaudio"
2641 mp1float_decoder_select="mpegaudio"
2642 mp2_decoder_select="mpegaudio"
2643 mp2float_decoder_select="mpegaudio"
2644 mp3_decoder_select="mpegaudio"
2645 mp3adu_decoder_select="mpegaudio"
2646 mp3adufloat_decoder_select="mpegaudio"
2647 mp3float_decoder_select="mpegaudio"
2648 mp3on4_decoder_select="mpegaudio"
2649 mp3on4float_decoder_select="mpegaudio"
2650 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2651 mpc8_decoder_select="mpegaudiodsp"
2652 mpegvideo_decoder_select="mpegvideo"
2653 mpeg1video_decoder_select="mpegvideo"
2654 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2655 mpeg2video_decoder_select="mpegvideo"
2656 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2657 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2658 mpeg4_encoder_select="h263_encoder"
2659 msa1_decoder_select="mss34dsp"
2660 mscc_decoder_deps="zlib"
2661 msmpeg4v1_decoder_select="h263_decoder"
2662 msmpeg4v2_decoder_select="h263_decoder"
2663 msmpeg4v2_encoder_select="h263_encoder"
2664 msmpeg4v3_decoder_select="h263_decoder"
2665 msmpeg4v3_encoder_select="h263_encoder"
2666 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2667 mts2_decoder_select="mss34dsp"
2668 mxpeg_decoder_select="mjpeg_decoder"
2669 nellymoser_decoder_select="mdct sinewin"
2670 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2671 nuv_decoder_select="idctdsp lzo"
2672 on2avc_decoder_select="mdct"
2673 opus_decoder_deps="swresample"
2674 opus_decoder_select="mdct15"
2675 opus_encoder_select="audio_frame_queue mdct15"
2676 png_decoder_deps="zlib"
2677 png_encoder_deps="zlib"
2678 png_encoder_select="llvidencdsp"
2679 prores_decoder_select="blockdsp idctdsp"
2680 prores_encoder_select="fdctdsp"
2681 qcelp_decoder_select="lsp"
2682 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2683 ra_144_decoder_select="audiodsp"
2684 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2685 ralf_decoder_select="golomb"
2686 rawvideo_decoder_select="bswapdsp"
2687 rscc_decoder_deps="zlib"
2688 rtjpeg_decoder_select="me_cmp"
2689 rv10_decoder_select="h263_decoder"
2690 rv10_encoder_select="h263_encoder"
2691 rv20_decoder_select="h263_decoder"
2692 rv20_encoder_select="h263_encoder"
2693 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2694 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2695 screenpresso_decoder_deps="zlib"
2696 shorten_decoder_select="bswapdsp"
2697 sipr_decoder_select="lsp"
2698 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2699 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2700 sonic_decoder_select="golomb rangecoder"
2701 sonic_encoder_select="golomb rangecoder"
2702 sonic_ls_encoder_select="golomb rangecoder"
2703 sp5x_decoder_select="mjpeg_decoder"
2704 srgc_decoder_deps="zlib"
2705 svq1_decoder_select="hpeldsp"
2706 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2707 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2708 svq3_decoder_suggest="zlib"
2709 tak_decoder_select="audiodsp"
2710 tdsc_decoder_deps="zlib"
2711 tdsc_decoder_select="mjpeg_decoder"
2712 theora_decoder_select="vp3_decoder"
2713 thp_decoder_select="mjpeg_decoder"
2714 tiff_decoder_suggest="zlib lzma"
2715 tiff_encoder_suggest="zlib"
2716 truehd_decoder_select="mlp_parser"
2717 truehd_encoder_select="lpc"
2718 truemotion2_decoder_select="bswapdsp"
2719 truespeech_decoder_select="bswapdsp"
2720 tscc_decoder_deps="zlib"
2721 twinvq_decoder_select="mdct lsp sinewin"
2722 txd_decoder_select="texturedsp"
2723 utvideo_decoder_select="bswapdsp llviddsp"
2724 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2725 vble_decoder_select="llviddsp"
2726 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2727 vc1image_decoder_select="vc1_decoder"
2728 vorbis_decoder_select="mdct"
2729 vorbis_encoder_select="audio_frame_queue mdct"
2730 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2731 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2732 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2733 vp6a_decoder_select="vp6_decoder"
2734 vp6f_decoder_select="vp6_decoder"
2735 vp7_decoder_select="h264pred videodsp vp8dsp"
2736 vp8_decoder_select="h264pred videodsp vp8dsp"
2737 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2738 webp_decoder_select="vp8_decoder exif"
2739 wmalossless_decoder_select="llauddsp"
2740 wmapro_decoder_select="mdct sinewin wma_freqs"
2741 wmav1_decoder_select="mdct sinewin wma_freqs"
2742 wmav1_encoder_select="mdct sinewin wma_freqs"
2743 wmav2_decoder_select="mdct sinewin wma_freqs"
2744 wmav2_encoder_select="mdct sinewin wma_freqs"
2745 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2746 wmv1_decoder_select="h263_decoder"
2747 wmv1_encoder_select="h263_encoder"
2748 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2749 wmv2_encoder_select="h263_encoder wmv2dsp"
2750 wmv3_decoder_select="vc1_decoder"
2751 wmv3image_decoder_select="wmv3_decoder"
2752 xma1_decoder_select="wmapro_decoder"
2753 xma2_decoder_select="wmapro_decoder"
2754 zerocodec_decoder_deps="zlib"
2755 zlib_decoder_deps="zlib"
2756 zlib_encoder_deps="zlib"
2757 zmbv_decoder_deps="zlib"
2758 zmbv_encoder_deps="zlib"
2759
2760 # hardware accelerators
2761 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2762 cuda_deps="ffnvcodec"
2763 cuvid_deps="ffnvcodec"
2764 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2765 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2766 ffnvcodec_deps_any="libdl LoadLibrary"
2767 nvdec_deps="ffnvcodec"
2768 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2769 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2770 xvmc_deps="X11_extensions_XvMClib_h"
2771
2772 h263_vaapi_hwaccel_deps="vaapi"
2773 h263_vaapi_hwaccel_select="h263_decoder"
2774 h263_videotoolbox_hwaccel_deps="videotoolbox"
2775 h263_videotoolbox_hwaccel_select="h263_decoder"
2776 h264_d3d11va_hwaccel_deps="d3d11va"
2777 h264_d3d11va_hwaccel_select="h264_decoder"
2778 h264_d3d11va2_hwaccel_deps="d3d11va"
2779 h264_d3d11va2_hwaccel_select="h264_decoder"
2780 h264_dxva2_hwaccel_deps="dxva2"
2781 h264_dxva2_hwaccel_select="h264_decoder"
2782 h264_nvdec_hwaccel_deps="nvdec"
2783 h264_nvdec_hwaccel_select="h264_decoder"
2784 h264_vaapi_hwaccel_deps="vaapi"
2785 h264_vaapi_hwaccel_select="h264_decoder"
2786 h264_vdpau_hwaccel_deps="vdpau"
2787 h264_vdpau_hwaccel_select="h264_decoder"
2788 h264_videotoolbox_hwaccel_deps="videotoolbox"
2789 h264_videotoolbox_hwaccel_select="h264_decoder"
2790 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2791 hevc_d3d11va_hwaccel_select="hevc_decoder"
2792 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2793 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2794 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2795 hevc_dxva2_hwaccel_select="hevc_decoder"
2796 hevc_nvdec_hwaccel_deps="nvdec"
2797 hevc_nvdec_hwaccel_select="hevc_decoder"
2798 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2799 hevc_vaapi_hwaccel_select="hevc_decoder"
2800 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2801 hevc_vdpau_hwaccel_select="hevc_decoder"
2802 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2803 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2804 mjpeg_nvdec_hwaccel_deps="nvdec"
2805 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2806 mjpeg_vaapi_hwaccel_deps="vaapi"
2807 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2808 mpeg_xvmc_hwaccel_deps="xvmc"
2809 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2810 mpeg1_nvdec_hwaccel_deps="nvdec"
2811 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2812 mpeg1_vdpau_hwaccel_deps="vdpau"
2813 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2814 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2815 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2816 mpeg1_xvmc_hwaccel_deps="xvmc"
2817 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2818 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2819 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2820 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2821 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2822 mpeg2_dxva2_hwaccel_deps="dxva2"
2823 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2824 mpeg2_nvdec_hwaccel_deps="nvdec"
2825 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2826 mpeg2_vaapi_hwaccel_deps="vaapi"
2827 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2828 mpeg2_vdpau_hwaccel_deps="vdpau"
2829 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2830 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2831 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2832 mpeg2_xvmc_hwaccel_deps="xvmc"
2833 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2834 mpeg4_nvdec_hwaccel_deps="nvdec"
2835 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2836 mpeg4_vaapi_hwaccel_deps="vaapi"
2837 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2838 mpeg4_vdpau_hwaccel_deps="vdpau"
2839 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2840 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2841 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2842 vc1_d3d11va_hwaccel_deps="d3d11va"
2843 vc1_d3d11va_hwaccel_select="vc1_decoder"
2844 vc1_d3d11va2_hwaccel_deps="d3d11va"
2845 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2846 vc1_dxva2_hwaccel_deps="dxva2"
2847 vc1_dxva2_hwaccel_select="vc1_decoder"
2848 vc1_nvdec_hwaccel_deps="nvdec"
2849 vc1_nvdec_hwaccel_select="vc1_decoder"
2850 vc1_vaapi_hwaccel_deps="vaapi"
2851 vc1_vaapi_hwaccel_select="vc1_decoder"
2852 vc1_vdpau_hwaccel_deps="vdpau"
2853 vc1_vdpau_hwaccel_select="vc1_decoder"
2854 vp8_nvdec_hwaccel_deps="nvdec"
2855 vp8_nvdec_hwaccel_select="vp8_decoder"
2856 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2857 vp8_vaapi_hwaccel_select="vp8_decoder"
2858 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2859 vp9_d3d11va_hwaccel_select="vp9_decoder"
2860 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2861 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2862 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2863 vp9_dxva2_hwaccel_select="vp9_decoder"
2864 vp9_nvdec_hwaccel_deps="nvdec"
2865 vp9_nvdec_hwaccel_select="vp9_decoder"
2866 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2867 vp9_vaapi_hwaccel_select="vp9_decoder"
2868 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2869 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2870 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2871 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2872 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2873 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2874
2875 # hardware-accelerated codecs
2876 omx_deps="libdl pthreads"
2877 omx_rpi_select="omx"
2878 qsv_deps="libmfx"
2879 qsvdec_select="qsv"
2880 qsvenc_select="qsv"
2881 qsvvpp_select="qsv"
2882 vaapi_encode_deps="vaapi"
2883 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2884
2885 hwupload_cuda_filter_deps="ffnvcodec"
2886 scale_npp_filter_deps="ffnvcodec libnpp"
2887 scale_cuda_filter_deps="cuda_sdk"
2888 thumbnail_cuda_filter_deps="cuda_sdk"
2889
2890 amf_deps_any="libdl LoadLibrary"
2891 nvenc_deps="ffnvcodec"
2892 nvenc_deps_any="libdl LoadLibrary"
2893 nvenc_encoder_deps="nvenc"
2894
2895 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2896 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2897 h264_amf_encoder_deps="amf"
2898 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2899 h264_cuvid_decoder_deps="cuvid"
2900 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2901 h264_mediacodec_decoder_deps="mediacodec"
2902 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2903 h264_mmal_decoder_deps="mmal"
2904 h264_nvenc_encoder_deps="nvenc"
2905 h264_omx_encoder_deps="omx"
2906 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2907 h264_qsv_encoder_select="qsvenc"
2908 h264_rkmpp_decoder_deps="rkmpp"
2909 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2910 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2911 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2912 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2913 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2914 hevc_amf_encoder_deps="amf"
2915 hevc_cuvid_decoder_deps="cuvid"
2916 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2917 hevc_mediacodec_decoder_deps="mediacodec"
2918 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2919 hevc_nvenc_encoder_deps="nvenc"
2920 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2921 hevc_qsv_encoder_select="hevcparse qsvenc"
2922 hevc_rkmpp_decoder_deps="rkmpp"
2923 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2924 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2925 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2926 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2927 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2928 mjpeg_cuvid_decoder_deps="cuvid"
2929 mjpeg_qsv_encoder_deps="libmfx"
2930 mjpeg_qsv_encoder_select="qsvenc"
2931 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2932 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2933 mpeg1_cuvid_decoder_deps="cuvid"
2934 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2935 mpeg2_crystalhd_decoder_select="crystalhd"
2936 mpeg2_cuvid_decoder_deps="cuvid"
2937 mpeg2_mmal_decoder_deps="mmal"
2938 mpeg2_mediacodec_decoder_deps="mediacodec"
2939 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2940 mpeg2_qsv_encoder_select="qsvenc"
2941 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2942 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2943 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2944 mpeg4_crystalhd_decoder_select="crystalhd"
2945 mpeg4_cuvid_decoder_deps="cuvid"
2946 mpeg4_mediacodec_decoder_deps="mediacodec"
2947 mpeg4_mmal_decoder_deps="mmal"
2948 mpeg4_omx_encoder_deps="omx"
2949 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2950 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2951 msmpeg4_crystalhd_decoder_select="crystalhd"
2952 nvenc_h264_encoder_select="h264_nvenc_encoder"
2953 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2954 vc1_crystalhd_decoder_select="crystalhd"
2955 vc1_cuvid_decoder_deps="cuvid"
2956 vc1_mmal_decoder_deps="mmal"
2957 vc1_qsv_decoder_select="qsvdec vc1_parser"
2958 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2959 vp8_cuvid_decoder_deps="cuvid"
2960 vp8_mediacodec_decoder_deps="mediacodec"
2961 vp8_qsv_decoder_select="qsvdec vp8_parser"
2962 vp8_rkmpp_decoder_deps="rkmpp"
2963 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2964 vp8_vaapi_encoder_select="vaapi_encode"
2965 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2966 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2967 vp9_cuvid_decoder_deps="cuvid"
2968 vp9_mediacodec_decoder_deps="mediacodec"
2969 vp9_rkmpp_decoder_deps="rkmpp"
2970 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2971 vp9_vaapi_encoder_select="vaapi_encode"
2972 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2973 wmv3_crystalhd_decoder_select="crystalhd"
2974
2975 # parsers
2976 aac_parser_select="adts_header"
2977 h264_parser_select="golomb h264dsp h264parse"
2978 hevc_parser_select="hevcparse"
2979 mpegaudio_parser_select="mpegaudioheader"
2980 mpegvideo_parser_select="mpegvideo"
2981 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2982 vc1_parser_select="vc1dsp"
2983
2984 # bitstream_filters
2985 aac_adtstoasc_bsf_select="adts_header"
2986 filter_units_bsf_select="cbs"
2987 h264_metadata_bsf_deps="const_nan"
2988 h264_metadata_bsf_select="cbs_h264"
2989 h264_redundant_pps_bsf_select="cbs_h264"
2990 hevc_metadata_bsf_select="cbs_h265"
2991 mjpeg2jpeg_bsf_select="jpegtables"
2992 mpeg2_metadata_bsf_select="cbs_mpeg2"
2993 trace_headers_bsf_select="cbs"
2994 vp9_metadata_bsf_select="cbs_vp9"
2995
2996 # external libraries
2997 aac_at_decoder_deps="audiotoolbox"
2998 aac_at_decoder_select="aac_adtstoasc_bsf"
2999 ac3_at_decoder_deps="audiotoolbox"
3000 ac3_at_decoder_select="ac3_parser"
3001 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3002 alac_at_decoder_deps="audiotoolbox"
3003 amr_nb_at_decoder_deps="audiotoolbox"
3004 avisynth_deps_any="libdl LoadLibrary"
3005 avisynth_demuxer_deps="avisynth"
3006 avisynth_demuxer_select="riffdec"
3007 eac3_at_decoder_deps="audiotoolbox"
3008 eac3_at_decoder_select="ac3_parser"
3009 gsm_ms_at_decoder_deps="audiotoolbox"
3010 ilbc_at_decoder_deps="audiotoolbox"
3011 mp1_at_decoder_deps="audiotoolbox"
3012 mp2_at_decoder_deps="audiotoolbox"
3013 mp3_at_decoder_deps="audiotoolbox"
3014 mp1_at_decoder_select="mpegaudioheader"
3015 mp2_at_decoder_select="mpegaudioheader"
3016 mp3_at_decoder_select="mpegaudioheader"
3017 pcm_alaw_at_decoder_deps="audiotoolbox"
3018 pcm_mulaw_at_decoder_deps="audiotoolbox"
3019 qdmc_at_decoder_deps="audiotoolbox"
3020 qdm2_at_decoder_deps="audiotoolbox"
3021 aac_at_encoder_deps="audiotoolbox"
3022 aac_at_encoder_select="audio_frame_queue"
3023 alac_at_encoder_deps="audiotoolbox"
3024 alac_at_encoder_select="audio_frame_queue"
3025 ilbc_at_encoder_deps="audiotoolbox"
3026 ilbc_at_encoder_select="audio_frame_queue"
3027 pcm_alaw_at_encoder_deps="audiotoolbox"
3028 pcm_alaw_at_encoder_select="audio_frame_queue"
3029 pcm_mulaw_at_encoder_deps="audiotoolbox"
3030 pcm_mulaw_at_encoder_select="audio_frame_queue"
3031 chromaprint_muxer_deps="chromaprint"
3032 h264_videotoolbox_encoder_deps="pthreads"
3033 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3034 hevc_videotoolbox_encoder_deps="pthreads"
3035 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3036 libaom_av1_decoder_deps="libaom"
3037 libaom_av1_encoder_deps="libaom"
3038 libcelt_decoder_deps="libcelt"
3039 libcodec2_decoder_deps="libcodec2"
3040 libcodec2_encoder_deps="libcodec2"
3041 libfdk_aac_decoder_deps="libfdk_aac"
3042 libfdk_aac_encoder_deps="libfdk_aac"
3043 libfdk_aac_encoder_select="audio_frame_queue"
3044 libgme_demuxer_deps="libgme"
3045 libgsm_decoder_deps="libgsm"
3046 libgsm_encoder_deps="libgsm"
3047 libgsm_ms_decoder_deps="libgsm"
3048 libgsm_ms_encoder_deps="libgsm"
3049 libilbc_decoder_deps="libilbc"
3050 libilbc_encoder_deps="libilbc"
3051 libkvazaar_encoder_deps="libkvazaar"
3052 libmodplug_demuxer_deps="libmodplug"
3053 libmp3lame_encoder_deps="libmp3lame"
3054 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3055 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3056 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3057 libopencore_amrnb_encoder_select="audio_frame_queue"
3058 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3059 libopenh264_decoder_deps="libopenh264"
3060 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3061 libopenh264_encoder_deps="libopenh264"
3062 libopenjpeg_decoder_deps="libopenjpeg"
3063 libopenjpeg_encoder_deps="libopenjpeg"
3064 libopenmpt_demuxer_deps="libopenmpt"
3065 libopus_decoder_deps="libopus"
3066 libopus_encoder_deps="libopus"
3067 libopus_encoder_select="audio_frame_queue"
3068 librsvg_decoder_deps="librsvg"
3069 libshine_encoder_deps="libshine"
3070 libshine_encoder_select="audio_frame_queue"
3071 libspeex_decoder_deps="libspeex"
3072 libspeex_encoder_deps="libspeex"
3073 libspeex_encoder_select="audio_frame_queue"
3074 libtheora_encoder_deps="libtheora"
3075 libtwolame_encoder_deps="libtwolame"
3076 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3077 libvorbis_decoder_deps="libvorbis"
3078 libvorbis_encoder_deps="libvorbis libvorbisenc"
3079 libvorbis_encoder_select="audio_frame_queue"
3080 libvpx_vp8_decoder_deps="libvpx"
3081 libvpx_vp8_encoder_deps="libvpx"
3082 libvpx_vp9_decoder_deps="libvpx"
3083 libvpx_vp9_encoder_deps="libvpx"
3084 libwavpack_encoder_deps="libwavpack"
3085 libwavpack_encoder_select="audio_frame_queue"
3086 libwebp_encoder_deps="libwebp"
3087 libwebp_anim_encoder_deps="libwebp"
3088 libx262_encoder_deps="libx262"
3089 libx264_encoder_deps="libx264"
3090 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3091 libx264rgb_encoder_select="libx264_encoder"
3092 libx265_encoder_deps="libx265"
3093 libxavs_encoder_deps="libxavs"
3094 libxvid_encoder_deps="libxvid"
3095 libzvbi_teletext_decoder_deps="libzvbi"
3096 vapoursynth_demuxer_deps="vapoursynth"
3097 videotoolbox_suggest="coreservices"
3098 videotoolbox_deps="corefoundation coremedia corevideo"
3099 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3100
3101 # demuxers / muxers
3102 ac3_demuxer_select="ac3_parser"
3103 aiff_muxer_select="iso_media"
3104 asf_demuxer_select="riffdec"
3105 asf_o_demuxer_select="riffdec"
3106 asf_muxer_select="riffenc"
3107 asf_stream_muxer_select="asf_muxer"
3108 avi_demuxer_select="iso_media riffdec exif"
3109 avi_muxer_select="riffenc"
3110 caf_demuxer_select="iso_media riffdec"
3111 caf_muxer_select="iso_media"
3112 dash_muxer_select="mp4_muxer"
3113 dash_demuxer_deps="libxml2"
3114 dirac_demuxer_select="dirac_parser"
3115 dts_demuxer_select="dca_parser"
3116 dtshd_demuxer_select="dca_parser"
3117 dv_demuxer_select="dvprofile"
3118 dv_muxer_select="dvprofile"
3119 dxa_demuxer_select="riffdec"
3120 eac3_demuxer_select="ac3_parser"
3121 f4v_muxer_select="mov_muxer"
3122 fifo_muxer_deps="threads"
3123 flac_demuxer_select="flac_parser"
3124 hds_muxer_select="flv_muxer"
3125 hls_muxer_select="mpegts_muxer"
3126 hls_muxer_suggest="gcrypt openssl"
3127 image2_alias_pix_demuxer_select="image2_demuxer"
3128 image2_brender_pix_demuxer_select="image2_demuxer"
3129 ipod_muxer_select="mov_muxer"
3130 ismv_muxer_select="mov_muxer"
3131 matroska_audio_muxer_select="matroska_muxer"
3132 matroska_demuxer_select="iso_media riffdec"
3133 matroska_demuxer_suggest="bzlib lzo zlib"
3134 matroska_muxer_select="iso_media riffenc"
3135 mmf_muxer_select="riffenc"
3136 mov_demuxer_select="iso_media riffdec"
3137 mov_demuxer_suggest="zlib"
3138 mov_muxer_select="iso_media riffenc rtpenc_chain"
3139 mp3_demuxer_select="mpegaudio_parser"
3140 mp3_muxer_select="mpegaudioheader"
3141 mp4_muxer_select="mov_muxer"
3142 mpegts_demuxer_select="iso_media"
3143 mpegts_muxer_select="adts_muxer latm_muxer"
3144 mpegtsraw_demuxer_select="mpegts_demuxer"
3145 mxf_d10_muxer_select="mxf_muxer"
3146 mxf_opatom_muxer_select="mxf_muxer"
3147 nut_muxer_select="riffenc"
3148 nuv_demuxer_select="riffdec"
3149 oga_muxer_select="ogg_muxer"
3150 ogg_demuxer_select="dirac_parse"
3151 ogv_muxer_select="ogg_muxer"
3152 opus_muxer_select="ogg_muxer"
3153 psp_muxer_select="mov_muxer"
3154 rtp_demuxer_select="sdp_demuxer"
3155 rtp_muxer_select="golomb"
3156 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3157 rtsp_demuxer_select="http_protocol rtpdec"
3158 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3159 sap_demuxer_select="sdp_demuxer"
3160 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3161 sdp_demuxer_select="rtpdec"
3162 smoothstreaming_muxer_select="ismv_muxer"
3163 spdif_demuxer_select="adts_header"
3164 spdif_muxer_select="adts_header"
3165 spx_muxer_select="ogg_muxer"
3166 swf_demuxer_suggest="zlib"
3167 tak_demuxer_select="tak_parser"
3168 tg2_muxer_select="mov_muxer"
3169 tgp_muxer_select="mov_muxer"
3170 vobsub_demuxer_select="mpegps_demuxer"
3171 w64_demuxer_select="wav_demuxer"
3172 w64_muxer_select="wav_muxer"
3173 wav_demuxer_select="riffdec"
3174 wav_muxer_select="riffenc"
3175 webm_muxer_select="iso_media riffenc"
3176 webm_dash_manifest_demuxer_select="matroska_demuxer"
3177 wtv_demuxer_select="mpegts_demuxer riffdec"
3178 wtv_muxer_select="mpegts_muxer riffenc"
3179 xmv_demuxer_select="riffdec"
3180 xwma_demuxer_select="riffdec"
3181
3182 # indevs / outdevs
3183 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3184 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3185 alsa_indev_deps="alsa"
3186 alsa_outdev_deps="alsa"
3187 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3188 avfoundation_indev_suggest="coregraphics applicationservices"
3189 avfoundation_indev_extralibs="-framework Foundation"
3190 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3191 caca_outdev_deps="libcaca"
3192 decklink_deps_any="libdl LoadLibrary"
3193 decklink_indev_deps="decklink threads"
3194 decklink_indev_extralibs="-lstdc++"
3195 decklink_outdev_deps="decklink threads"
3196 decklink_outdev_extralibs="-lstdc++"
3197 libndi_newtek_indev_deps="libndi_newtek"
3198 libndi_newtek_indev_extralibs="-lndi"
3199 libndi_newtek_outdev_deps="libndi_newtek"
3200 libndi_newtek_outdev_extralibs="-lndi"
3201 dshow_indev_deps="IBaseFilter"
3202 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3203 fbdev_indev_deps="linux_fb_h"
3204 fbdev_outdev_deps="linux_fb_h"
3205 gdigrab_indev_deps="CreateDIBSection"
3206 gdigrab_indev_extralibs="-lgdi32"
3207 gdigrab_indev_select="bmp_decoder"
3208 iec61883_indev_deps="libiec61883"
3209 jack_indev_deps="libjack"
3210 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3211 kmsgrab_indev_deps="libdrm"
3212 lavfi_indev_deps="avfilter"
3213 libcdio_indev_deps="libcdio"
3214 libdc1394_indev_deps="libdc1394"
3215 openal_indev_deps="openal"
3216 opengl_outdev_deps="opengl"
3217 oss_indev_deps_any="sys_soundcard_h"
3218 oss_outdev_deps_any="sys_soundcard_h"
3219 pulse_indev_deps="libpulse"
3220 pulse_outdev_deps="libpulse"
3221 sdl2_outdev_deps="sdl2"
3222 sndio_indev_deps="sndio"
3223 sndio_outdev_deps="sndio"
3224 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3225 v4l2_indev_suggest="libv4l2"
3226 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3227 v4l2_outdev_suggest="libv4l2"
3228 vfwcap_indev_deps="vfw32 vfwcap_defines"
3229 xcbgrab_indev_deps="libxcb"
3230 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3231 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3232 xv_outdev_extralibs="-lXv -lX11 -lXext"
3233
3234 # protocols
3235 async_protocol_deps="threads"
3236 bluray_protocol_deps="libbluray"
3237 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3238 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3239 ffrtmpcrypt_protocol_select="tcp_protocol"
3240 ffrtmphttp_protocol_conflict="librtmp_protocol"
3241 ffrtmphttp_protocol_select="http_protocol"
3242 ftp_protocol_select="tcp_protocol"
3243 gopher_protocol_select="network"
3244 http_protocol_select="tcp_protocol"
3245 http_protocol_suggest="zlib"
3246 httpproxy_protocol_select="tcp_protocol"
3247 httpproxy_protocol_suggest="zlib"
3248 https_protocol_select="tls_protocol"
3249 https_protocol_suggest="zlib"
3250 icecast_protocol_select="http_protocol"
3251 librtmp_protocol_deps="librtmp"
3252 librtmpe_protocol_deps="librtmp"
3253 librtmps_protocol_deps="librtmp"
3254 librtmpt_protocol_deps="librtmp"
3255 librtmpte_protocol_deps="librtmp"
3256 libsmbclient_protocol_deps="libsmbclient gplv3"
3257 libssh_protocol_deps="libssh"
3258 libtls_conflict="openssl gnutls"
3259 mmsh_protocol_select="http_protocol"
3260 mmst_protocol_select="network"
3261 libsrt_protocol_deps="libsrt"
3262 libsrt_protocol_select="network"
3263 rtmp_protocol_conflict="librtmp_protocol"
3264 rtmp_protocol_select="tcp_protocol"
3265 rtmp_protocol_suggest="zlib"
3266 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3267 rtmpe_protocol_suggest="zlib"
3268 rtmps_protocol_conflict="librtmp_protocol"
3269 rtmps_protocol_select="tls_protocol"
3270 rtmps_protocol_suggest="zlib"
3271 rtmpt_protocol_select="ffrtmphttp_protocol"
3272 rtmpt_protocol_suggest="zlib"
3273 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3274 rtmpte_protocol_suggest="zlib"
3275 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3276 rtmpts_protocol_suggest="zlib"
3277 rtp_protocol_select="udp_protocol"
3278 schannel_conflict="openssl gnutls libtls"
3279 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3280 sctp_protocol_select="network"
3281 securetransport_conflict="openssl gnutls libtls"
3282 srtp_protocol_select="rtp_protocol srtp"
3283 tcp_protocol_select="network"
3284 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3285 tls_protocol_select="tcp_protocol"
3286 udp_protocol_select="network"
3287 udplite_protocol_select="network"
3288 unix_protocol_deps="sys_un_h"
3289 unix_protocol_select="network"
3290
3291 # filters
3292 afftfilt_filter_deps="avcodec"
3293 afftfilt_filter_select="fft"
3294 afir_filter_deps="avcodec"
3295 afir_filter_select="fft"
3296 amovie_filter_deps="avcodec avformat"
3297 aresample_filter_deps="swresample"
3298 ass_filter_deps="libass"
3299 atempo_filter_deps="avcodec"
3300 atempo_filter_select="rdft"
3301 avgblur_opencl_filter_deps="opencl"
3302 azmq_filter_deps="libzmq"
3303 blackframe_filter_deps="gpl"
3304 boxblur_filter_deps="gpl"
3305 bs2b_filter_deps="libbs2b"
3306 colormatrix_filter_deps="gpl"
3307 convolution_opencl_filter_deps="opencl"
3308 convolve_filter_deps="avcodec"
3309 convolve_filter_select="fft"
3310 coreimage_filter_deps="coreimage appkit"
3311 coreimage_filter_extralibs="-framework OpenGL"
3312 coreimagesrc_filter_deps="coreimage appkit"
3313 coreimagesrc_filter_extralibs="-framework OpenGL"
3314 cover_rect_filter_deps="avcodec avformat gpl"
3315 cropdetect_filter_deps="gpl"
3316 deconvolve_filter_deps="avcodec"
3317 deconvolve_filter_select="fft"
3318 deinterlace_qsv_filter_deps="libmfx"
3319 deinterlace_vaapi_filter_deps="vaapi"
3320 delogo_filter_deps="gpl"
3321 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3322 deshake_filter_select="pixelutils"
3323 drawtext_filter_deps="libfreetype"
3324 drawtext_filter_suggest="libfontconfig libfribidi"
3325 elbg_filter_deps="avcodec"
3326 eq_filter_deps="gpl"
3327 fftfilt_filter_deps="avcodec"
3328 fftfilt_filter_select="rdft"
3329 find_rect_filter_deps="avcodec avformat gpl"
3330 firequalizer_filter_deps="avcodec"
3331 firequalizer_filter_select="rdft"
3332 flite_filter_deps="libflite"
3333 framerate_filter_select="pixelutils"
3334 frei0r_filter_deps="frei0r libdl"
3335 frei0r_src_filter_deps="frei0r libdl"
3336 fspp_filter_deps="gpl"
3337 geq_filter_deps="gpl"
3338 histeq_filter_deps="gpl"
3339 hqdn3d_filter_deps="gpl"
3340 interlace_filter_deps="gpl"
3341 kerndeint_filter_deps="gpl"
3342 ladspa_filter_deps="ladspa libdl"
3343 lv2_filter_deps="lv2"
3344 mcdeint_filter_deps="avcodec gpl"
3345 movie_filter_deps="avcodec avformat"
3346 mpdecimate_filter_deps="gpl"
3347 mpdecimate_filter_select="pixelutils"
3348 mptestsrc_filter_deps="gpl"
3349 negate_filter_deps="lut_filter"
3350 nnedi_filter_deps="gpl"
3351 ocr_filter_deps="libtesseract"
3352 ocv_filter_deps="libopencv"
3353 openclsrc_filter_deps="opencl"
3354 overlay_opencl_filter_deps="opencl"
3355 overlay_qsv_filter_deps="libmfx"
3356 overlay_qsv_filter_select="qsvvpp"
3357 owdenoise_filter_deps="gpl"
3358 pan_filter_deps="swresample"
3359 perspective_filter_deps="gpl"
3360 phase_filter_deps="gpl"
3361 pp7_filter_deps="gpl"
3362 pp_filter_deps="gpl postproc"
3363 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3364 program_opencl_filter_deps="opencl"
3365 pullup_filter_deps="gpl"
3366 removelogo_filter_deps="avcodec avformat swscale"
3367 repeatfields_filter_deps="gpl"
3368 resample_filter_deps="avresample"
3369 rubberband_filter_deps="librubberband"
3370 sab_filter_deps="gpl swscale"
3371 scale2ref_filter_deps="swscale"
3372 scale_filter_deps="swscale"
3373 scale_qsv_filter_deps="libmfx"
3374 select_filter_select="pixelutils"
3375 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3376 showcqt_filter_deps="avcodec avformat swscale"
3377 showcqt_filter_suggest="libfontconfig libfreetype"
3378 showcqt_filter_select="fft"
3379 showfreqs_filter_deps="avcodec"
3380 showfreqs_filter_select="fft"
3381 showspectrum_filter_deps="avcodec"
3382 showspectrum_filter_select="fft"
3383 showspectrumpic_filter_deps="avcodec"
3384 showspectrumpic_filter_select="fft"
3385 signature_filter_deps="gpl avcodec avformat"
3386 smartblur_filter_deps="gpl swscale"
3387 sofalizer_filter_deps="libmysofa avcodec"
3388 sofalizer_filter_select="fft"
3389 spectrumsynth_filter_deps="avcodec"
3390 spectrumsynth_filter_select="fft"
3391 spp_filter_deps="gpl avcodec"
3392 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3393 stereo3d_filter_deps="gpl"
3394 subtitles_filter_deps="avformat avcodec libass"
3395 super2xsai_filter_deps="gpl"
3396 pixfmts_super2xsai_test_deps="super2xsai_filter"
3397 tinterlace_filter_deps="gpl"
3398 tinterlace_merge_test_deps="tinterlace_filter"
3399 tinterlace_pad_test_deps="tinterlace_filter"
3400 tonemap_filter_deps="const_nan"
3401 unsharp_opencl_filter_deps="opencl"
3402 uspp_filter_deps="gpl avcodec"
3403 vaguedenoiser_filter_deps="gpl"
3404 vidstabdetect_filter_deps="libvidstab"
3405 vidstabtransform_filter_deps="libvidstab"
3406 libvmaf_filter_deps="libvmaf pthreads"
3407 zmq_filter_deps="libzmq"
3408 zoompan_filter_deps="swscale"
3409 zscale_filter_deps="libzimg const_nan"
3410 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3411 vpp_qsv_filter_deps="libmfx"
3412 vpp_qsv_filter_select="qsvvpp"
3413
3414 # examples
3415 avio_dir_cmd_deps="avformat avutil"
3416 avio_reading_deps="avformat avcodec avutil"
3417 decode_audio_example_deps="avcodec avutil"
3418 decode_video_example_deps="avcodec avutil"
3419 demuxing_decoding_example_deps="avcodec avformat avutil"
3420 encode_audio_example_deps="avcodec avutil"
3421 encode_video_example_deps="avcodec avutil"
3422 extract_mvs_example_deps="avcodec avformat avutil"
3423 filter_audio_example_deps="avfilter avutil"
3424 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3425 filtering_video_example_deps="avfilter avcodec avformat avutil"
3426 http_multiclient_example_deps="avformat avutil fork"
3427 hw_decode_example_deps="avcodec avformat avutil"
3428 metadata_example_deps="avformat avutil"
3429 muxing_example_deps="avcodec avformat avutil swscale"
3430 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3431 remuxing_example_deps="avcodec avformat avutil"
3432 resampling_audio_example_deps="avutil swresample"
3433 scaling_video_example_deps="avutil swscale"
3434 transcode_aac_example_deps="avcodec avformat swresample"
3435 transcoding_example_deps="avfilter avcodec avformat avutil"
3436 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3437 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3438
3439 # EXTRALIBS_LIST
3440 cpu_init_extralibs="pthreads_extralibs"
3441 cws2fws_extralibs="zlib_extralibs"
3442
3443 # libraries, in linking order
3444 avcodec_deps="avutil"
3445 avcodec_suggest="libm"
3446 avcodec_select="null_bsf"
3447 avdevice_deps="avformat avcodec avutil"
3448 avdevice_suggest="libm"
3449 avfilter_deps="avutil"
3450 avfilter_suggest="libm"
3451 avformat_deps="avcodec avutil"
3452 avformat_suggest="libm network zlib"
3453 avresample_deps="avutil"
3454 avresample_suggest="libm"
3455 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3456 postproc_deps="avutil gpl"
3457 postproc_suggest="libm"
3458 swresample_deps="avutil"
3459 swresample_suggest="libm libsoxr"
3460 swscale_deps="avutil"
3461 swscale_suggest="libm"
3462
3463 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3464 avfilter_extralibs="pthreads_extralibs"
3465 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3466
3467 # programs
3468 ffmpeg_deps="avcodec avfilter avformat"
3469 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3470                null_filter
3471                trim_filter"
3472 ffmpeg_suggest="ole32 psapi shell32"
3473 ffplay_deps="avcodec avformat swscale swresample sdl2"
3474 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3475 ffplay_suggest="shell32"
3476 ffprobe_deps="avcodec avformat"
3477 ffprobe_suggest="shell32"
3478
3479 # documentation
3480 podpages_deps="perl"
3481 manpages_deps="perl pod2man"
3482 htmlpages_deps="perl"
3483 htmlpages_deps_any="makeinfo_html texi2html"
3484 txtpages_deps="perl makeinfo"
3485 doc_deps_any="manpages htmlpages podpages txtpages"
3486
3487 # default parameters
3488
3489 logfile="ffbuild/config.log"
3490
3491 # installation paths
3492 prefix_default="/usr/local"
3493 bindir_default='${prefix}/bin'
3494 datadir_default='${prefix}/share/ffmpeg'
3495 docdir_default='${prefix}/share/doc/ffmpeg'
3496 incdir_default='${prefix}/include'
3497 libdir_default='${prefix}/lib'
3498 mandir_default='${prefix}/share/man'
3499
3500 # toolchain
3501 ar_default="ar"
3502 cc_default="gcc"
3503 cxx_default="g++"
3504 host_cc_default="gcc"
3505 doxygen_default="doxygen"
3506 install="install"
3507 ln_s_default="ln -s -f"
3508 nm_default="nm -g"
3509 pkg_config_default=pkg-config
3510 ranlib_default="ranlib"
3511 strip_default="strip"
3512 version_script='--version-script'
3513 objformat="elf32"
3514 x86asmexe_default="nasm"
3515 windres_default="windres"
3516 nvcc_default="nvcc"
3517 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3518 striptype="direct"
3519
3520 # OS
3521 target_os_default=$(tolower $(uname -s))
3522 host_os=$target_os_default
3523
3524 # machine
3525 if test "$target_os_default" = aix; then
3526     arch_default=$(uname -p)
3527     strip_default="strip -X32_64"
3528 else
3529     arch_default=$(uname -m)
3530 fi
3531 cpu="generic"
3532 intrinsics="none"
3533
3534 # configurable options
3535 enable $PROGRAM_LIST
3536 enable $DOCUMENT_LIST
3537 enable $EXAMPLE_LIST
3538 enable $(filter_out avresample $LIBRARY_LIST)
3539 enable stripping
3540
3541 enable asm
3542 enable debug
3543 enable doc
3544 enable faan faandct faanidct
3545 enable optimizations
3546 enable runtime_cpudetect
3547 enable safe_bitstream_reader
3548 enable static
3549 enable swscale_alpha
3550 enable valgrind_backtrace
3551
3552 sws_max_filter_size_default=256
3553 set_default sws_max_filter_size
3554
3555 # internal components are enabled by default
3556 enable $EXTRALIBS_LIST
3557
3558 # Avoid external, non-system, libraries getting enabled by dependency resolution
3559 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3560
3561 # build settings
3562 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3563 LIBPREF="lib"
3564 LIBSUF=".a"
3565 FULLNAME='$(NAME)$(BUILDSUF)'
3566 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3567 SLIBPREF="lib"
3568 SLIBSUF=".so"
3569 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3570 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3571 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3572 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3573 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3574 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3575 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3576
3577 asflags_filter=echo
3578 cflags_filter=echo
3579 ldflags_filter=echo
3580
3581 AS_C='-c'
3582 AS_O='-o $@'
3583 CC_C='-c'
3584 CC_E='-E -o $@'
3585 CC_O='-o $@'
3586 CXX_C='-c'
3587 CXX_O='-o $@'
3588 OBJCC_C='-c'
3589 OBJCC_E='-E -o $@'
3590 OBJCC_O='-o $@'
3591 X86ASM_O='-o $@'
3592 LD_O='-o $@'
3593 LD_LIB='-l%'
3594 LD_PATH='-L'
3595 HOSTCC_C='-c'
3596 HOSTCC_E='-E -o $@'
3597 HOSTCC_O='-o $@'
3598 HOSTLD_O='-o $@'
3599 NVCC_C='-c'
3600 NVCC_O='-o $@'
3601
3602 host_extralibs='-lm'
3603 host_cflags_filter=echo
3604 host_ldflags_filter=echo
3605
3606 target_path='$(CURDIR)'
3607
3608 # since the object filename is not given with the -MM flag, the compiler
3609 # is only able to print the basename, and we must add the path ourselves
3610 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3611 DEPFLAGS='-MM'
3612
3613 mkdir -p ffbuild
3614
3615 # find source path
3616 if test -f configure; then
3617     source_path=.
3618 else
3619     source_path=$(cd $(dirname "$0"); pwd)
3620     case "$source_path" in
3621         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3622     esac
3623     test -e "$source_path/config.h" &&
3624         die "Out of tree builds are impossible with config.h in source dir."
3625 fi
3626
3627 for v in "$@"; do
3628     r=${v#*=}
3629     l=${v%"$r"}
3630     r=$(sh_quote "$r")
3631     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3632 done
3633
3634 find_things_extern(){
3635     thing=$1
3636     pattern=$2
3637     file=$source_path/$3
3638     out=${4:-$thing}
3639     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3640 }
3641
3642 find_filters_extern(){
3643     file=$source_path/$1
3644     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3645     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3646 }
3647
3648 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3649 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3650 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3651 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3652 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3653 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3654 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3655 CODEC_LIST="
3656     $ENCODER_LIST
3657     $DECODER_LIST
3658 "
3659 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3660 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3661 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3662 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3663
3664 AVCODEC_COMPONENTS_LIST="
3665     $BSF_LIST
3666     $DECODER_LIST
3667     $ENCODER_LIST
3668     $HWACCEL_LIST
3669     $PARSER_LIST
3670 "
3671
3672 AVDEVICE_COMPONENTS_LIST="
3673     $INDEV_LIST
3674     $OUTDEV_LIST
3675 "
3676
3677 AVFILTER_COMPONENTS_LIST="
3678     $FILTER_LIST
3679 "
3680
3681 AVFORMAT_COMPONENTS_LIST="
3682     $DEMUXER_LIST
3683     $MUXER_LIST
3684     $PROTOCOL_LIST
3685 "
3686
3687 ALL_COMPONENTS="
3688     $AVCODEC_COMPONENTS_LIST
3689     $AVDEVICE_COMPONENTS_LIST
3690     $AVFILTER_COMPONENTS_LIST
3691     $AVFORMAT_COMPONENTS_LIST
3692 "
3693
3694 for n in $COMPONENT_LIST; do
3695     v=$(toupper ${n%s})_LIST
3696     eval enable \$$v
3697     eval ${n}_if_any="\$$v"
3698 done
3699
3700 enable $ARCH_EXT_LIST
3701
3702 die_unknown(){
3703     echo "Unknown option \"$1\"."
3704     echo "See $0 --help for available options."
3705     exit 1
3706 }
3707
3708 print_in_columns() {
3709     cols=$(expr $ncols / 24)
3710     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3711 }
3712
3713 show_list() {
3714     suffix=_$1
3715     shift
3716     echo $* | sed s/$suffix//g | print_in_columns
3717     exit 0
3718 }
3719
3720 rand_list(){
3721     IFS=', '
3722     set -- $*
3723     unset IFS
3724     for thing; do
3725         comp=${thing%:*}
3726         prob=${thing#$comp}
3727         prob=${prob#:}
3728         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3729         echo "prob ${prob:-0.5}"
3730         printf '%s\n' $comp
3731     done
3732 }
3733
3734 do_random(){
3735     action=$1
3736     shift
3737     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3738     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3739 }
3740
3741 for opt do
3742     optval="${opt#*=}"
3743     case "$opt" in
3744         --extra-ldflags=*)
3745             add_ldflags $optval
3746         ;;
3747         --extra-ldexeflags=*)
3748             add_ldexeflags $optval
3749         ;;
3750         --extra-ldsoflags=*)
3751             add_ldsoflags $optval
3752         ;;
3753         --extra-ldlibflags=*)
3754             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3755                  "removed in the future. Use --extra-ldsoflags instead."
3756             add_ldsoflags $optval
3757         ;;
3758         --extra-libs=*)
3759             add_extralibs $optval
3760         ;;
3761         --disable-devices)
3762             disable $INDEV_LIST $OUTDEV_LIST
3763         ;;
3764         --enable-debug=*)
3765             debuglevel="$optval"
3766         ;;
3767         --disable-programs)
3768             disable $PROGRAM_LIST
3769         ;;
3770         --disable-everything)
3771             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3772         ;;
3773         --disable-all)
3774             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3775             disable $LIBRARY_LIST $PROGRAM_LIST doc
3776             enable avutil
3777         ;;
3778         --enable-random|--disable-random)
3779             action=${opt%%-random}
3780             do_random ${action#--} $COMPONENT_LIST
3781         ;;
3782         --enable-random=*|--disable-random=*)
3783             action=${opt%%-random=*}
3784             do_random ${action#--} $optval
3785         ;;
3786         --enable-sdl)
3787             enable sdl2
3788         ;;
3789         --enable-*=*|--disable-*=*)
3790             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3791             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3792             eval list=\$$(toupper $thing)_LIST
3793             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3794             list=$(filter "$name" $list)
3795             [ "$list" = "" ] && warn "Option $opt did not match anything"
3796             $action $list
3797         ;;
3798         --enable-yasm|--disable-yasm)
3799             warn "The ${opt} option is only provided for compatibility and will be\n"\
3800                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3801             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3802         ;;
3803         --yasmexe=*)
3804             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3805                  "removed in the future. Use --x86asmexe instead."
3806             x86asmexe="$optval"
3807         ;;
3808         --enable-?*|--disable-?*)
3809             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3810             if is_in $option $COMPONENT_LIST; then
3811                 test $action = disable && action=unset
3812                 eval $action \$$(toupper ${option%s})_LIST
3813             elif is_in $option $CMDLINE_SELECT; then
3814                 $action $option
3815             else
3816                 die_unknown $opt
3817             fi
3818         ;;
3819         --list-*)
3820             NAME="${opt#--list-}"
3821             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3822             NAME=${NAME%s}
3823             eval show_list $NAME \$$(toupper $NAME)_LIST
3824         ;;
3825         --help|-h) show_help
3826         ;;
3827         --quiet|-q) quiet=yes
3828         ;;
3829         --fatal-warnings) enable fatal_warnings
3830         ;;
3831         --libfuzzer=*)
3832             libfuzzer_path="$optval"
3833         ;;
3834         *)
3835             optname="${opt%%=*}"
3836             optname="${optname#--}"
3837             optname=$(echo "$optname" | sed 's/-/_/g')
3838             if is_in $optname $CMDLINE_SET; then
3839                 eval $optname='$optval'
3840             elif is_in $optname $CMDLINE_APPEND; then
3841                 append $optname "$optval"
3842             else
3843                 die_unknown $opt
3844             fi
3845         ;;
3846     esac
3847 done
3848
3849 for e in $env; do
3850     eval "export $e"
3851 done
3852
3853 if disabled autodetect; then
3854
3855     # Unless iconv is explicitely disabled by the user, we still want to probe
3856     # for the iconv from the libc.
3857     disabled iconv || enable libc_iconv
3858
3859     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3860     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3861 fi
3862 # Mark specifically enabled, but normally autodetected libraries as requested.
3863 for lib in $AUTODETECT_LIBS; do
3864     enabled $lib && request $lib
3865 done
3866 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3867 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3868 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3869
3870 disabled logging && logfile=/dev/null
3871
3872 # command line configuration sanity checks
3873
3874 # we need to build at least one lib type
3875 if ! enabled_any static shared; then
3876     cat <<EOF
3877 At least one library type must be built.
3878 Specify --enable-static to build the static libraries or --enable-shared to
3879 build the shared libraries as well. To only build the shared libraries specify
3880 --disable-static in addition to --enable-shared.
3881 EOF
3882     exit 1
3883 fi
3884
3885 die_license_disabled() {
3886     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3887 }
3888
3889 die_license_disabled_gpl() {
3890     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3891 }
3892
3893 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3894 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3895
3896 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3897 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3898
3899 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3900
3901 if enabled nonfree; then
3902     license="nonfree and unredistributable"
3903 elif enabled gplv3; then
3904     license="GPL version 3 or later"
3905 elif enabled lgplv3; then
3906     license="LGPL version 3 or later"
3907 elif enabled gpl; then
3908     license="GPL version 2 or later"
3909 else
3910     license="LGPL version 2.1 or later"
3911 fi
3912
3913 enabled_all gnutls openssl &&
3914     die "GnuTLS and OpenSSL must not be enabled at the same time."
3915
3916 # Disable all the library-specific components if the library itself
3917 # is disabled, see AVCODEC_LIST and following _LIST variables.
3918
3919 disable_components(){
3920     disabled ${1} && disable $(
3921         eval components="\$$(toupper ${1})_COMPONENTS"
3922         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3923     )
3924 }
3925
3926 map 'disable_components $v' $LIBRARY_LIST
3927
3928 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3929 set >> $logfile
3930
3931 test -n "$valgrind" && toolchain="valgrind-memcheck"
3932
3933 enabled ossfuzz && {
3934     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3935     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3936 }
3937
3938 case "$toolchain" in
3939     *-asan)
3940         cc_default="${toolchain%-asan}"
3941         add_cflags  -fsanitize=address
3942         add_ldflags -fsanitize=address
3943     ;;
3944     *-msan)
3945         cc_default="${toolchain%-msan}"
3946         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3947         add_ldflags -fsanitize=memory
3948     ;;
3949     *-tsan)
3950         cc_default="${toolchain%-tsan}"
3951         add_cflags  -fsanitize=thread -fPIE
3952         add_ldflags -fsanitize=thread -pie
3953         case "$toolchain" in
3954             gcc-tsan)
3955                 add_cflags  -fPIC
3956                 add_ldflags -fPIC
3957                 ;;
3958         esac
3959     ;;
3960     *-usan)
3961         cc_default="${toolchain%-usan}"
3962         add_cflags  -fsanitize=undefined
3963         add_ldflags -fsanitize=undefined
3964     ;;
3965     valgrind-*)
3966         target_exec_default="valgrind"
3967         case "$toolchain" in
3968             valgrind-massif)
3969                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3970                 ;;
3971             valgrind-memcheck)
3972                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3973                 ;;
3974         esac
3975     ;;
3976     msvc)
3977         # Check whether the current MSVC version needs the C99 converter.
3978         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3979         # support enough of C99 to build ffmpeg. Default to the new
3980         # behaviour if the regexp was unable to match anything, since this
3981         # successfully parses the version number of existing supported
3982         # versions that require the converter (MSVC 2010 and 2012).
3983         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3984         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3985             cc_default="cl"
3986             cxx_default="cl"
3987         else
3988             cc_default="c99wrap cl"
3989             cxx_default="c99wrap cl"
3990         fi
3991         ld_default="$source_path/compat/windows/mslink"
3992         nm_default="dumpbin -symbols"
3993         ar_default="lib"
3994         case "$arch" in
3995         aarch64|arm64)
3996             as_default="armasm64"
3997             ;;
3998         arm*)
3999             as_default="armasm"
4000             ;;
4001         esac
4002         target_os_default="win32"
4003         # Use a relative path for TMPDIR. This makes sure all the
4004         # ffconf temp files are written with a relative path, avoiding
4005         # issues with msys/win32 path conversion for MSVC parameters
4006         # such as -Fo<file> or -out:<file>.
4007         TMPDIR=.
4008     ;;
4009     icl)
4010         cc_default="icl"
4011         ld_default="xilink"
4012         nm_default="dumpbin -symbols"
4013         ar_default="xilib"
4014         target_os_default="win32"
4015         TMPDIR=.
4016     ;;
4017     gcov)
4018         add_cflags  -fprofile-arcs -ftest-coverage
4019         add_ldflags -fprofile-arcs -ftest-coverage
4020     ;;
4021     llvm-cov)
4022         add_cflags -fprofile-arcs -ftest-coverage
4023         add_ldflags --coverage
4024     ;;
4025     hardened)
4026         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4027         add_cflags   -fno-strict-overflow -fstack-protector-all
4028         add_ldflags  -Wl,-z,relro -Wl,-z,now
4029         add_cflags   -fPIE
4030         add_ldexeflags -fPIE -pie
4031     ;;
4032     ?*)
4033         die "Unknown toolchain $toolchain"
4034     ;;
4035 esac
4036
4037 if test -n "$cross_prefix"; then
4038     test -n "$arch" && test -n "$target_os" ||
4039         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4040     enable cross_compile
4041 fi
4042
4043 ar_default="${cross_prefix}${ar_default}"
4044 cc_default="${cross_prefix}${cc_default}"
4045 cxx_default="${cross_prefix}${cxx_default}"
4046 nm_default="${cross_prefix}${nm_default}"
4047 pkg_config_default="${cross_prefix}${pkg_config_default}"
4048 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4049     ranlib_default="${cross_prefix}${ranlib_default} -D"
4050 else
4051     ranlib_default="${cross_prefix}${ranlib_default}"
4052 fi
4053 strip_default="${cross_prefix}${strip_default}"
4054 windres_default="${cross_prefix}${windres_default}"
4055
4056 sysinclude_default="${sysroot}/usr/include"
4057
4058 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4059     target_exec target_os x86asmexe nvcc
4060 enabled cross_compile || host_cc_default=$cc
4061 set_default host_cc
4062
4063 pkg_config_fail_message=""
4064 if ! $pkg_config --version >/dev/null 2>&1; then
4065     warn "$pkg_config not found, library detection may fail."
4066     pkg_config=false
4067 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4068     pkg_config_fail_message="
4069 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4070 fi
4071
4072 if test $doxygen != $doxygen_default && \
4073   ! $doxygen --version >/dev/null 2>&1; then
4074     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4075 fi
4076
4077 exesuf() {
4078     case $1 in
4079         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4080     esac
4081 }
4082
4083 EXESUF=$(exesuf $target_os)
4084 HOSTEXESUF=$(exesuf $host_os)
4085
4086 # set temporary file name
4087 : ${TMPDIR:=$TEMPDIR}
4088 : ${TMPDIR:=$TMP}
4089 : ${TMPDIR:=/tmp}
4090
4091 if [ -n "$tempprefix" ] ; then
4092     mktemp(){
4093         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4094         echo "$tmpname"
4095         mkdir "$tmpname"
4096     }
4097 elif ! test_cmd mktemp -u XXXXXX; then
4098     # simple replacement for missing mktemp
4099     # NOT SAFE FOR GENERAL USE
4100     mktemp(){
4101         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4102         echo "$tmpname"
4103         mkdir "$tmpname"
4104     }
4105 fi
4106
4107 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4108     die "Unable to create temporary directory in $TMPDIR."
4109
4110 tmpfile(){
4111     tmp="${FFTMPDIR}/test"$2
4112     (set -C; exec > $tmp) 2> /dev/null ||
4113         die "Unable to create temporary file in $FFTMPDIR."
4114     eval $1=$tmp
4115 }
4116
4117 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4118 trap 'exit 2' INT
4119
4120 tmpfile TMPASM .asm
4121 tmpfile TMPC   .c
4122 tmpfile TMPCPP .cpp
4123 tmpfile TMPE   $EXESUF
4124 tmpfile TMPH   .h
4125 tmpfile TMPM   .m
4126 tmpfile TMPO   .o
4127 tmpfile TMPS   .S
4128 tmpfile TMPSH  .sh
4129 tmpfile TMPV   .ver
4130
4131 unset -f mktemp
4132
4133 chmod +x $TMPE
4134
4135 # make sure we can execute files in $TMPDIR
4136 cat > $TMPSH 2>> $logfile <<EOF
4137 #! /bin/sh
4138 EOF
4139 chmod +x $TMPSH >> $logfile 2>&1
4140 if ! $TMPSH >> $logfile 2>&1; then
4141     cat <<EOF
4142 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4143 variable to another directory and make sure that it is not mounted noexec.
4144 EOF
4145     die "Sanity test failed."
4146 fi
4147
4148 armasm_flags(){
4149     for flag; do
4150         case $flag in
4151             # Filter out MSVC cl.exe options from cflags that shouldn't
4152             # be passed to gas-preprocessor
4153             -M[TD]*)                                            ;;
4154             *)                  echo $flag                      ;;
4155         esac
4156    done
4157 }
4158
4159 cparser_flags(){
4160     for flag; do
4161         case $flag in
4162             -Wno-switch)             echo -Wno-switch-enum ;;
4163             -Wno-format-zero-length) ;;
4164             -Wdisabled-optimization) ;;
4165             -Wno-pointer-sign)       echo -Wno-other ;;
4166             *)                       echo $flag ;;
4167         esac
4168     done
4169 }
4170
4171 msvc_common_flags(){
4172     for flag; do
4173         case $flag in
4174             # In addition to specifying certain flags under the compiler
4175             # specific filters, they must be specified here as well or else the
4176             # generic catch all at the bottom will print the original flag.
4177             -Wall)                ;;
4178             -Wextra)              ;;
4179             -std=c99)             ;;
4180             # Common flags
4181             -fomit-frame-pointer) ;;
4182             -g)                   echo -Z7 ;;
4183             -fno-math-errno)      ;;
4184             -fno-common)          ;;
4185             -fno-signed-zeros)    ;;
4186             -fPIC)                ;;
4187             -mthumb)              ;;
4188             -march=*)             ;;
4189             -lz)                  echo zlib.lib ;;
4190             -lx264)               echo libx264.lib ;;
4191             -lstdc++)             ;;
4192             -l*)                  echo ${flag#-l}.lib ;;
4193             -LARGEADDRESSAWARE)   echo $flag ;;
4194             -L*)                  echo -libpath:${flag#-L} ;;
4195             *)                    echo $flag ;;
4196         esac
4197     done
4198 }
4199
4200 msvc_flags(){
4201     msvc_common_flags "$@"
4202     for flag; do
4203         case $flag in
4204             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4205                                        -wd4554 ;;
4206             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4207                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4208                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4209                                        -wd4307 \
4210                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4211         esac
4212     done
4213 }
4214
4215 icl_flags(){
4216     msvc_common_flags "$@"
4217     for flag; do
4218         case $flag in
4219             # Despite what Intel's documentation says -Wall, which is supported
4220             # on Windows, does enable remarks so disable them here.
4221             -Wall)                echo $flag -Qdiag-disable:remark ;;
4222             -std=c99)             echo -Qstd=c99 ;;
4223             -flto)                echo -ipo ;;
4224         esac
4225     done
4226 }
4227
4228 icc_flags(){
4229     for flag; do
4230         case $flag in
4231             -flto)                echo -ipo ;;
4232             *)                    echo $flag ;;
4233         esac
4234     done
4235 }
4236
4237 suncc_flags(){
4238     for flag; do
4239         case $flag in
4240             -march=*|-mcpu=*)
4241                 case "${flag#*=}" in
4242                     native)                   echo -xtarget=native       ;;
4243                     v9|niagara)               echo -xarch=sparc          ;;
4244                     ultrasparc)               echo -xarch=sparcvis       ;;
4245                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4246                     i586|pentium)             echo -xchip=pentium        ;;
4247                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4248                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4249                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4250                     pentium4*)          echo -xtarget=pentium4           ;;
4251                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4252                     *-sse3)             echo -xarch=sse3                 ;;
4253                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4254                     bonnell)                   echo -xarch=ssse3         ;;
4255                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4256                     westmere)                  echo -xtarget=westmere    ;;
4257                     silvermont)                echo -xarch=sse4_2        ;;
4258                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4259                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4260                                                echo -xarch=avx           ;;
4261                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4262                     btver1)                    echo -xarch=amdsse4a      ;;
4263                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4264                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4265                     k8|opteron|athlon64|athlon-fx)
4266                                                echo -xarch=sse2a         ;;
4267                     athlon*)                   echo -xarch=pentium_proa  ;;
4268                 esac
4269                 ;;
4270             -std=c99)             echo -xc99              ;;
4271             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4272             -fPIC)                echo -KPIC -xcode=pic32 ;;
4273             -W*,*)                echo $flag              ;;
4274             -f*-*|-W*|-mimpure-text)                      ;;
4275             -shared)              echo -G                 ;;
4276             *)                    echo $flag              ;;
4277         esac
4278     done
4279 }
4280
4281 probe_cc(){
4282     pfx=$1
4283     _cc=$2
4284     first=$3
4285
4286     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4287     unset _ld_o _ldflags _ld_lib _ld_path
4288     unset _depflags _DEPCMD _DEPFLAGS
4289     _flags_filter=echo
4290
4291     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4292         true # no-op to avoid reading stdin in following checks
4293     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4294         _type=llvm_gcc
4295         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4296         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4297         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4298         _cflags_speed='-O3'
4299         _cflags_size='-Os'
4300     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4301         _type=gcc
4302         gcc_version=$($_cc --version | head -n1)
4303         gcc_basever=$($_cc -dumpversion)
4304         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4305         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4306         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4307         case $gcc_basever in
4308             2) ;;
4309             2.*) ;;
4310             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4311         esac
4312         if [ "$first" = true ]; then
4313             case $gcc_basever in
4314                 4.2*)
4315                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4316             esac
4317         fi
4318         _cflags_speed='-O3'
4319         _cflags_size='-Os'
4320     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4321         _type=icc
4322         _ident=$($_cc --version | head -n1)
4323         _depflags='-MMD'
4324         _cflags_speed='-O3'
4325         _cflags_size='-Os'
4326         _cflags_noopt='-O1'
4327         _flags_filter=icc_flags
4328     elif $_cc -v 2>&1 | grep -q xlc; then
4329         _type=xlc
4330         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4331         _cflags_speed='-O5'
4332         _cflags_size='-O5 -qcompact'
4333     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4334         test -d "$sysroot" || die "No valid sysroot specified."
4335         _type=armcc
4336         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4337         armcc_conf="$PWD/armcc.conf"
4338         $_cc --arm_linux_configure                 \
4339              --arm_linux_config_file="$armcc_conf" \
4340              --configure_sysroot="$sysroot"        \
4341              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4342              die "Error creating armcc configuration file."
4343         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4344         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4345         as_default="${cross_prefix}gcc"
4346         _depflags='-MMD'
4347         _cflags_speed='-O3'
4348         _cflags_size='-Os'
4349     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4350         _type=clang
4351         _ident=$($_cc --version 2>/dev/null | head -n1)
4352         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4353         _cflags_speed='-O3'
4354         _cflags_size='-Oz'
4355     elif $_cc -V 2>&1 | grep -q Sun; then
4356         _type=suncc
4357         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4358         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4359         _DEPFLAGS='-xM1 -xc99'
4360         _ldflags='-std=c99'
4361         _cflags_speed='-O5'
4362         _cflags_size='-O5 -xspace'
4363         _flags_filter=suncc_flags
4364     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4365         _type=pathscale
4366         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4367         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4368         _cflags_speed='-O2'
4369         _cflags_size='-Os'
4370         _flags_filter='filter_out -Wdisabled-optimization'
4371     elif $_cc -v 2>&1 | grep -q Open64; then
4372         _type=open64
4373         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4374         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4375         _cflags_speed='-O2'
4376         _cflags_size='-Os'
4377         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4378     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4379         _type=armasm
4380         _ident=$($_cc | head -n1)
4381         # 4509: "This form of conditional instruction is deprecated"
4382         _flags="-nologo -ignore 4509"
4383         _flags_filter=armasm_flags
4384     elif $_cc 2>&1 | grep -q Intel; then
4385         _type=icl
4386         _ident=$($_cc 2>&1 | head -n1)
4387         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4388         # Not only is O3 broken on 13.x+ but it is slower on all previous
4389         # versions (tested) as well.
4390         _cflags_speed="-O2"
4391         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4392         if $_cc 2>&1 | grep -q Linker; then
4393             _ld_o='-out:$@'
4394         else
4395             _ld_o='-Fe$@'
4396         fi
4397         _cc_o='-Fo$@'
4398         _cc_e='-P'
4399         _flags_filter=icl_flags
4400         _ld_lib='lib%.a'
4401         _ld_path='-libpath:'
4402         # -Qdiag-error to make icl error when seeing certain unknown arguments
4403         _flags='-nologo -Qdiag-error:4044,10157'
4404         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4405         # with MSVC which enables it by default.
4406         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4407         disable stripping
4408     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4409         # lld can emulate multiple different linkers; in ms link.exe mode,
4410         # the -? parameter gives the help output which contains an identifyable
4411         # string, while it gives an error in other modes.
4412         _type=lld-link
4413         # The link.exe mode doesn't have a switch for getting the version,
4414         # but we can force it back to gnu mode and get the version from there.
4415         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4416         _ld_o='-out:$@'
4417         _flags_filter=msvc_flags
4418         _ld_lib='lib%.a'
4419         _ld_path='-libpath:'
4420     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4421         _type=msvc
4422         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4423         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4424         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4425         _cflags_speed="-O2"
4426         _cflags_size="-O1"
4427         _cflags_noopt="-O1"
4428         if $_cc -nologo- 2>&1 | grep -q Linker; then
4429             _ld_o='-out:$@'
4430         else
4431             _ld_o='-Fe$@'
4432         fi
4433         _cc_o='-Fo$@'
4434         _cc_e='-P -Fi$@'
4435         _flags_filter=msvc_flags
4436         _ld_lib='lib%.a'
4437         _ld_path='-libpath:'
4438         _flags='-nologo'
4439         disable stripping
4440     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4441         _type=cparser
4442         _ident=$($_cc --version | head -n1)
4443         _depflags='-MMD'
4444         _cflags_speed='-O4'
4445         _cflags_size='-O2'
4446         _flags_filter=cparser_flags
4447     fi
4448
4449     eval ${pfx}_type=\$_type
4450     eval ${pfx}_ident=\$_ident
4451 }
4452
4453 set_ccvars(){
4454     eval ${1}_C=\${_cc_c-\${${1}_C}}
4455     eval ${1}_E=\${_cc_e-\${${1}_E}}
4456     eval ${1}_O=\${_cc_o-\${${1}_O}}
4457
4458     if [ -n "$_depflags" ]; then
4459         eval ${1}_DEPFLAGS=\$_depflags
4460     else
4461         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4462         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4463         eval DEP${1}FLAGS=\$_flags
4464     fi
4465 }
4466
4467 probe_cc cc "$cc" "true"
4468 cflags_filter=$_flags_filter
4469 cflags_speed=$_cflags_speed
4470 cflags_size=$_cflags_size
4471 cflags_noopt=$_cflags_noopt
4472 add_cflags $_flags $_cflags
4473 cc_ldflags=$_ldflags
4474 set_ccvars CC
4475 set_ccvars CXX
4476
4477 probe_cc hostcc "$host_cc"
4478 host_cflags_filter=$_flags_filter
4479 host_cflags_speed=$_cflags_speed
4480 add_host_cflags  $_flags $_cflags
4481 set_ccvars HOSTCC
4482
4483 test -n "$cc_type" && enable $cc_type ||
4484     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4485
4486 : ${as_default:=$cc}
4487 : ${objcc_default:=$cc}
4488 : ${dep_cc_default:=$cc}
4489 : ${ld_default:=$cc}
4490 : ${host_ld_default:=$host_cc}
4491 set_default ar as objcc dep_cc ld ln_s host_ld windres
4492
4493 probe_cc as "$as"
4494 asflags_filter=$_flags_filter
4495 add_asflags $_flags $_cflags
4496 set_ccvars AS
4497
4498 probe_cc objcc "$objcc"
4499 objcflags_filter=$_flags_filter
4500 add_objcflags $_flags $_cflags
4501 set_ccvars OBJC
4502
4503 probe_cc ld "$ld"
4504 ldflags_filter=$_flags_filter
4505 add_ldflags $_flags $_ldflags
4506 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4507 LD_O=${_ld_o-$LD_O}
4508 LD_LIB=${_ld_lib-$LD_LIB}
4509 LD_PATH=${_ld_path-$LD_PATH}
4510
4511 probe_cc hostld "$host_ld"
4512 host_ldflags_filter=$_flags_filter
4513 add_host_ldflags $_flags $_ldflags
4514 HOSTLD_O=${_ld_o-$HOSTLD_O}
4515
4516 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4517     probe_cc depcc "$dep_cc"
4518     CCDEP=${_DEPCMD:-$DEPCMD}
4519     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4520     DEPCCFLAGS=$_flags
4521 fi
4522
4523 if $ar 2>&1 | grep -q Microsoft; then
4524     arflags="-nologo"
4525     ar_o='-out:$@'
4526 elif $ar 2>&1 | grep -q "\[D\] "; then
4527     arflags="rcD"
4528     ar_o='$@'
4529 else
4530     arflags="rc"
4531     ar_o='$@'
4532 fi
4533
4534 add_cflags $extra_cflags
4535 add_cxxflags $extra_cxxflags
4536 add_objcflags $extra_objcflags
4537 add_asflags $extra_cflags
4538
4539 if test -n "$sysroot"; then
4540     case "$cc_type" in
4541         gcc|llvm_gcc|clang)
4542             add_cppflags --sysroot="$sysroot"
4543             add_ldflags --sysroot="$sysroot"
4544         ;;
4545     esac
4546 fi
4547
4548 if test "$cpu" = host; then
4549     enabled cross_compile &&
4550         die "--cpu=host makes no sense when cross-compiling."
4551
4552     case "$cc_type" in
4553         gcc|llvm_gcc)
4554             check_native(){
4555                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4556                 sed -n "/cc1.*$1=/{
4557                             s/.*$1=\\([^ ]*\\).*/\\1/
4558                             p
4559                             q
4560                         }" $TMPE
4561             }
4562             cpu=$(check_native -march || check_native -mcpu)
4563         ;;
4564         clang)
4565             check_native(){
4566                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4567                 sed -n "/cc1.*-target-cpu /{
4568                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4569                             p
4570                             q
4571                         }" $TMPE
4572             }
4573             cpu=$(check_native -march)
4574         ;;
4575     esac
4576
4577     test "${cpu:-host}" = host &&
4578         die "--cpu=host not supported with compiler $cc"
4579 fi
4580
4581 # Deal with common $arch aliases
4582 case "$arch" in
4583     aarch64|arm64)
4584         arch="aarch64"
4585     ;;
4586     arm*|iPad*|iPhone*)
4587         arch="arm"
4588     ;;
4589     mips*|IP*)
4590         case "$arch" in
4591         *el)
4592             add_cppflags -EL
4593             add_ldflags -EL
4594         ;;
4595         *eb)
4596             add_cppflags -EB
4597             add_ldflags -EB
4598         ;;
4599         esac
4600         arch="mips"
4601     ;;
4602     parisc*|hppa*)
4603         arch="parisc"
4604     ;;
4605     "Power Macintosh"|ppc*|powerpc*)
4606         arch="ppc"
4607     ;;
4608     s390|s390x)
4609         arch="s390"
4610     ;;
4611     sh4|sh)
4612         arch="sh4"
4613     ;;
4614     sun4*|sparc*)
4615         arch="sparc"
4616     ;;
4617     tilegx|tile-gx)
4618         arch="tilegx"
4619     ;;
4620     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4621         arch="x86"
4622     ;;
4623 esac
4624
4625 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4626 enable $arch
4627
4628 # Add processor-specific flags
4629 if enabled aarch64; then
4630
4631     case $cpu in
4632         armv*)
4633             cpuflags="-march=$cpu"
4634         ;;
4635         *)
4636             cpuflags="-mcpu=$cpu"
4637         ;;
4638     esac
4639
4640 elif enabled alpha; then
4641
4642     cpuflags="-mcpu=$cpu"
4643
4644 elif enabled arm; then
4645
4646     check_arm_arch() {
4647         test_cpp_condition stddef.h \
4648             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4649             $cpuflags
4650     }
4651
4652     probe_arm_arch() {
4653         if   check_arm_arch 4;        then echo armv4
4654         elif check_arm_arch 4T;       then echo armv4t
4655         elif check_arm_arch 5;        then echo armv5
4656         elif check_arm_arch 5E;       then echo armv5e
4657         elif check_arm_arch 5T;       then echo armv5t
4658         elif check_arm_arch 5TE;      then echo armv5te
4659         elif check_arm_arch 5TEJ;     then echo armv5te
4660         elif check_arm_arch 6;        then echo armv6
4661         elif check_arm_arch 6J;       then echo armv6j
4662         elif check_arm_arch 6K;       then echo armv6k
4663         elif check_arm_arch 6Z;       then echo armv6z
4664         elif check_arm_arch 6KZ;      then echo armv6zk
4665         elif check_arm_arch 6ZK;      then echo armv6zk
4666         elif check_arm_arch 6T2;      then echo armv6t2
4667         elif check_arm_arch 7;        then echo armv7
4668         elif check_arm_arch 7A  7_A;  then echo armv7-a
4669         elif check_arm_arch 7S;       then echo armv7-a
4670         elif check_arm_arch 7R  7_R;  then echo armv7-r
4671         elif check_arm_arch 7M  7_M;  then echo armv7-m
4672         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4673         elif check_arm_arch 8A  8_A;  then echo armv8-a
4674         fi
4675     }
4676
4677     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4678
4679     case $cpu in
4680         armv*)
4681             cpuflags="-march=$cpu"
4682             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4683         ;;
4684         *)
4685             cpuflags="-mcpu=$cpu"
4686             case $cpu in
4687                 cortex-a*)                               subarch=armv7a  ;;
4688                 cortex-r*)                               subarch=armv7r  ;;
4689                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4690                 arm11*)                                  subarch=armv6   ;;
4691                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4692                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4693                 *)                             subarch=$(probe_arm_arch) ;;
4694             esac
4695         ;;
4696     esac
4697
4698     case "$subarch" in
4699         armv5t*)    enable fast_clz                ;;
4700         armv[6-8]*)
4701             enable fast_clz
4702             disabled fast_unaligned || enable fast_unaligned
4703             ;;
4704     esac
4705
4706 elif enabled avr32; then
4707
4708     case $cpu in
4709         ap7[02]0[0-2])
4710             subarch="avr32_ap"
4711             cpuflags="-mpart=$cpu"
4712         ;;
4713         ap)
4714             subarch="avr32_ap"
4715             cpuflags="-march=$cpu"
4716         ;;
4717         uc3[ab]*)
4718             subarch="avr32_uc"
4719             cpuflags="-mcpu=$cpu"
4720         ;;
4721         uc)
4722             subarch="avr32_uc"
4723             cpuflags="-march=$cpu"
4724         ;;
4725     esac
4726
4727 elif enabled bfin; then
4728
4729     cpuflags="-mcpu=$cpu"
4730
4731 elif enabled mips; then
4732
4733     cpuflags="-march=$cpu"
4734
4735     if [ "$cpu" != "generic" ]; then
4736         disable mips32r2
4737         disable mips32r5
4738         disable mips64r2
4739         disable mips32r6
4740         disable mips64r6
4741         disable loongson2
4742         disable loongson3
4743
4744         case $cpu in
4745             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4746                 enable mips32r2
4747                 disable msa
4748             ;;
4749             p5600|i6400|p6600)
4750                 disable mipsdsp
4751                 disable mipsdspr2
4752             ;;
4753             loongson*)
4754                 enable loongson2
4755                 enable loongson3
4756                 enable local_aligned
4757                 enable simd_align_16
4758                 enable fast_64bit
4759                 enable fast_clz
4760                 enable fast_cmov
4761                 enable fast_unaligned
4762                 disable aligned_stack
4763                 disable mipsfpu
4764                 disable mipsdsp
4765                 disable mipsdspr2
4766                 case $cpu in
4767                     loongson3*)
4768                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4769                     ;;
4770                     loongson2e)
4771                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4772                     ;;
4773                     loongson2f)
4774                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4775                     ;;
4776                 esac
4777             ;;
4778             *)
4779                 # Unknown CPU. Disable everything.
4780                 warn "unknown CPU. Disabling all MIPS optimizations."
4781                 disable mipsfpu
4782                 disable mipsdsp
4783                 disable mipsdspr2
4784                 disable msa
4785                 disable mmi
4786             ;;
4787         esac
4788
4789         case $cpu in
4790             24kc)
4791                 disable mipsfpu
4792                 disable mipsdsp
4793                 disable mipsdspr2
4794             ;;
4795             24kf*)
4796                 disable mipsdsp
4797                 disable mipsdspr2
4798             ;;
4799             24kec|34kc|1004kc)
4800                 disable mipsfpu
4801                 disable mipsdspr2
4802             ;;
4803             24kef*|34kf*|1004kf*)
4804                 disable mipsdspr2
4805             ;;
4806             74kc)
4807                 disable mipsfpu
4808             ;;
4809             p5600)
4810                 enable mips32r5
4811                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4812             ;;
4813             i6400)
4814                 enable mips64r6
4815                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4816             ;;
4817             p6600)
4818                 enable mips64r6
4819                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4820             ;;
4821         esac
4822     else
4823         # We do not disable anything. Is up to the user to disable the unwanted features.
4824         warn 'generic cpu selected'
4825     fi
4826
4827 elif enabled ppc; then
4828
4829     disable ldbrx
4830
4831     case $(tolower $cpu) in
4832         601|ppc601|powerpc601)
4833             cpuflags="-mcpu=601"
4834             disable altivec
4835         ;;
4836         603*|ppc603*|powerpc603*)
4837             cpuflags="-mcpu=603"
4838             disable altivec
4839         ;;
4840         604*|ppc604*|powerpc604*)
4841             cpuflags="-mcpu=604"
4842             disable altivec
4843         ;;
4844         g3|75*|ppc75*|powerpc75*)
4845             cpuflags="-mcpu=750"
4846             disable altivec
4847         ;;
4848         g4|745*|ppc745*|powerpc745*)
4849             cpuflags="-mcpu=7450"
4850             disable vsx
4851         ;;
4852         74*|ppc74*|powerpc74*)
4853             cpuflags="-mcpu=7400"
4854             disable vsx
4855         ;;
4856         g5|970|ppc970|powerpc970)
4857             cpuflags="-mcpu=970"
4858             disable vsx
4859         ;;
4860         power[3-6]*)
4861             cpuflags="-mcpu=$cpu"
4862             disable vsx
4863         ;;
4864         power[7-8]*)
4865             cpuflags="-mcpu=$cpu"
4866         ;;
4867         cell)
4868             cpuflags="-mcpu=cell"
4869             enable ldbrx
4870             disable vsx
4871         ;;
4872         e500mc)
4873             cpuflags="-mcpu=e500mc"
4874             disable altivec
4875         ;;
4876         e500v2)
4877             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4878             disable altivec
4879             disable dcbzl
4880         ;;
4881         e500)
4882             cpuflags="-mcpu=8540 -mhard-float"
4883             disable altivec
4884             disable dcbzl
4885         ;;
4886     esac
4887
4888 elif enabled sparc; then
4889
4890     case $cpu in
4891         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4892             cpuflags="-mcpu=$cpu"
4893         ;;
4894         ultrasparc*|niagara[234])
4895             cpuflags="-mcpu=$cpu"
4896         ;;
4897     esac
4898
4899 elif enabled x86; then
4900
4901     case $cpu in
4902         i[345]86|pentium)
4903             cpuflags="-march=$cpu"
4904             disable i686
4905             disable mmx
4906         ;;
4907         # targets that do NOT support nopl and conditional mov (cmov)
4908         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4909             cpuflags="-march=$cpu"
4910             disable i686
4911         ;;
4912         # targets that do support nopl and conditional mov (cmov)
4913         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4914         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4915         |amdfam10|barcelona|b[dt]ver*|znver*)
4916             cpuflags="-march=$cpu"
4917             enable i686
4918             enable fast_cmov
4919         ;;
4920         # targets that do support conditional mov but on which it's slow
4921         pentium4|pentium4m|prescott|nocona)
4922             cpuflags="-march=$cpu"
4923             enable i686
4924             disable fast_cmov
4925         ;;
4926     esac
4927
4928 fi
4929
4930 if [ "$cpu" != generic ]; then
4931     add_cflags  $cpuflags
4932     add_asflags $cpuflags
4933     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4934 fi
4935
4936 # compiler sanity check
4937 test_exec <<EOF
4938 int main(void){ return 0; }
4939 EOF
4940 if test "$?" != 0; then
4941     echo "$cc is unable to create an executable file."
4942     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4943         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4944         echo "Only do this if you know what cross compiling means."
4945     fi
4946     die "C compiler test failed."
4947 fi
4948
4949 add_cppflags -D_ISOC99_SOURCE
4950 add_cxxflags -D__STDC_CONSTANT_MACROS
4951 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4952
4953 # some compilers silently accept -std=c11, so we also need to check that the
4954 # version macro is defined properly
4955 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4956     add_cflags -std=c11 ||
4957     check_cflags -std=c99
4958
4959 check_cppflags -D_FILE_OFFSET_BITS=64
4960 check_cppflags -D_LARGEFILE_SOURCE
4961
4962 add_host_cppflags -D_ISOC99_SOURCE
4963 check_host_cflags -std=c99
4964 check_host_cflags -Wall
4965 check_host_cflags $host_cflags_speed
4966
4967 check_64bit(){
4968     arch32=$1
4969     arch64=$2
4970     expr=${3:-'sizeof(void *) > 4'}
4971     test_code cc "" "int test[2*($expr) - 1]" &&
4972         subarch=$arch64 || subarch=$arch32
4973     enable $subarch
4974 }
4975
4976 case "$arch" in
4977     aarch64|alpha|ia64)
4978         enabled shared && enable_weak pic
4979     ;;
4980     mips)
4981         check_64bit mips mips64 '_MIPS_SIM > 1'
4982         enabled shared && enable_weak pic
4983     ;;
4984     parisc)
4985         check_64bit parisc parisc64
4986         enabled shared && enable_weak pic
4987     ;;
4988     ppc)
4989         check_64bit ppc ppc64
4990         enabled shared && enable_weak pic
4991     ;;
4992     s390)
4993         check_64bit s390 s390x
4994         enabled shared && enable_weak pic
4995     ;;
4996     sparc)
4997         check_64bit sparc sparc64
4998         enabled shared && enable_weak pic
4999     ;;
5000     x86)
5001         check_64bit x86_32 x86_64
5002         # Treat x32 as x64 for now. Note it also needs pic if shared
5003         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5004             subarch=x86_64 && enable x86_64 && disable x86_32
5005         if enabled x86_64; then
5006             enabled shared && enable_weak pic
5007             objformat=elf64
5008         fi
5009     ;;
5010 esac
5011
5012 # OS specific
5013 case $target_os in
5014     aix)
5015         SHFLAGS=-shared
5016         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5017         enabled shared && add_ldflags -Wl,-brtl
5018         arflags='-Xany -r -c'
5019         striptype=""
5020         ;;
5021     android)
5022         disable symver
5023         enable section_data_rel_ro
5024         SLIB_INSTALL_NAME='$(SLIBNAME)'
5025         SLIB_INSTALL_LINKS=
5026         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5027         ;;
5028     haiku)
5029         prefix_default="/boot/common"
5030         network_extralibs="-lnetwork"
5031         host_extralibs=
5032         ;;
5033     sunos)
5034         SHFLAGS='-shared -Wl,-h,$$(@F)'
5035         enabled x86 && append SHFLAGS -mimpure-text
5036         network_extralibs="-lsocket -lnsl"
5037         add_cppflags -D__EXTENSIONS__
5038         # When using suncc to build, the Solaris linker will mark
5039         # an executable with each instruction set encountered by
5040         # the Solaris assembler.  As our libraries contain their own
5041         # guards for processor-specific code, instead suppress
5042         # generation of the HWCAPS ELF section on Solaris x86 only.
5043         enabled_all suncc x86 &&
5044             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5045             add_ldflags -Wl,-M,mapfile
5046         nm_default='nm -P -g'
5047         version_script='-M'
5048         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5049         ;;
5050     netbsd)
5051         disable symver
5052         oss_indev_extralibs="-lossaudio"
5053         oss_outdev_extralibs="-lossaudio"
5054         enabled gcc || check_ldflags -Wl,-zmuldefs
5055         ;;
5056     openbsd|bitrig)
5057         disable symver
5058         striptype=""
5059         SHFLAGS='-shared'
5060         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5061         SLIB_INSTALL_LINKS=
5062         oss_indev_extralibs="-lossaudio"
5063         oss_outdev_extralibs="-lossaudio"
5064         ;;
5065     dragonfly)
5066         disable symver
5067         ;;
5068     freebsd)
5069         ;;
5070     bsd/os)
5071         add_extralibs -lpoll -lgnugetopt
5072         strip="strip -d"
5073         ;;
5074     darwin)
5075         enabled ppc && add_asflags -force_cpusubtype_ALL
5076         install_name_dir_default='$(SHLIBDIR)'
5077         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5078         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5079         strip="${strip} -x"
5080         add_ldflags -Wl,-dynamic,-search_paths_first
5081         check_cflags -Werror=partial-availability
5082         SLIBSUF=".dylib"
5083         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5084         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5085         enabled x86_64 && objformat="macho64" || objformat="macho32"
5086         enabled_any pic shared x86_64 ||
5087             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5088         check_header dispatch/dispatch.h &&
5089             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5090         if test -n "$sysroot"; then
5091             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5092             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5093         fi
5094         version_script='-exported_symbols_list'
5095         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5096         ;;
5097     msys*)
5098         die "Native MSYS builds are discouraged, please use the MINGW environment."
5099         ;;
5100     mingw32*|mingw64*)
5101         target_os=mingw32
5102         LIBTARGET=i386
5103         if enabled x86_64; then
5104             LIBTARGET="i386:x86-64"
5105         elif enabled arm; then
5106             LIBTARGET="arm"
5107         elif enabled aarch64; then
5108             LIBTARGET="arm64"
5109         fi
5110         if enabled shared; then
5111             # Cannot build both shared and static libs when using dllimport.
5112             disable static
5113         fi
5114         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5115         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5116         shlibdir_default="$bindir_default"
5117         SLIBPREF=""
5118         SLIBSUF=".dll"
5119         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5120         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5121         if test_cmd lib.exe -list; then
5122             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5123             if enabled x86_64; then
5124                 LIBTARGET=x64
5125             fi
5126         else
5127             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5128         fi
5129         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5130         SLIB_INSTALL_LINKS=
5131         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5132         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5133         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5134         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5135         enabled x86_64 && objformat="win64" || objformat="win32"
5136         dlltool="${cross_prefix}dlltool"
5137         ranlib=:
5138         enable dos_paths
5139         check_ldflags -Wl,--nxcompat,--dynamicbase
5140         # Lets work around some stupidity in binutils.
5141         # ld will strip relocations from executables even though we need them
5142         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5143         # however ld then forgets what the entry point should be (oops) so we
5144         # have to manually (re)set it.
5145         if enabled x86_32; then
5146             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5147         elif enabled x86_64; then
5148             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5149             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5150             # Set image base >4GB for extra entropy with HEASLR
5151             add_ldexeflags -Wl,--image-base,0x140000000
5152             append SHFLAGS -Wl,--image-base,0x180000000
5153         fi
5154         ;;
5155     win32|win64)
5156         disable symver
5157         if enabled shared; then
5158             # Link to the import library instead of the normal static library
5159             # for shared libs.
5160             LD_LIB='%.lib'
5161             # Cannot build both shared and static libs with MSVC or icl.
5162             disable static
5163         fi
5164         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5165         shlibdir_default="$bindir_default"
5166         SLIBPREF=""
5167         SLIBSUF=".dll"
5168         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5169         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5170         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5171         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5172         SLIB_INSTALL_LINKS=
5173         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5174         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5175         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5176         enabled x86_64 && objformat="win64" || objformat="win32"
5177         ranlib=:
5178         enable dos_paths
5179         ;;
5180     cygwin*)
5181         target_os=cygwin
5182         shlibdir_default="$bindir_default"
5183         SLIBPREF="cyg"
5184         SLIBSUF=".dll"
5185         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5186         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5187         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5188         SLIB_INSTALL_LINKS=
5189         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5190         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5191         enabled x86_64 && objformat="win64" || objformat="win32"
5192         enable dos_paths
5193         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5194         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5195         ;;
5196     *-dos|freedos|opendos)
5197         network_extralibs="-lsocket"
5198         objformat="coff"
5199         enable dos_paths
5200         add_cppflags -U__STRICT_ANSI__
5201         ;;
5202     linux)
5203         enable section_data_rel_ro
5204         enabled_any arm aarch64 && enable_weak linux_perf
5205         ;;
5206     irix*)
5207         target_os=irix
5208         ranlib="echo ignoring ranlib"
5209         ;;
5210     os/2*)
5211         strip="lxlite -CS"
5212         striptype=""
5213         objformat="aout"
5214         add_cppflags -D_GNU_SOURCE
5215         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5216         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5217         LIBSUF="_s.a"
5218         SLIBPREF=""
5219         SLIBSUF=".dll"
5220         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5221         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5222         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5223             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5224             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5225             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5226             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5227         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5228             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5229         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5230         SLIB_INSTALL_LINKS=
5231         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5232         enable dos_paths
5233         enable_weak os2threads
5234         ;;
5235     gnu/kfreebsd)
5236         add_cppflags -D_BSD_SOURCE
5237         ;;
5238     gnu)
5239         ;;
5240     qnx)
5241         add_cppflags -D_QNX_SOURCE
5242         network_extralibs="-lsocket"
5243         ;;
5244     symbian)
5245         SLIBSUF=".dll"
5246         enable dos_paths
5247         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5248         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5249         add_ldflags -Wl,--target1-abs,--no-undefined \
5250                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5251                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5252         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5253                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5254                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5255         ;;
5256     minix)
5257         ;;
5258     none)
5259         ;;
5260     *)
5261         die "Unknown OS '$target_os'."
5262         ;;
5263 esac
5264
5265 # test if creating links works
5266 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5267 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5268 mkdir "$link_dest"
5269 $ln_s "$link_dest" "$link_name"
5270 touch "$link_dest/test_file"
5271 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5272     # create link to source path
5273     [ -e src ] && rm src
5274     $ln_s "$source_path" src
5275     source_link=src
5276 else
5277     # creating directory links doesn't work
5278     # fall back to using the full source path
5279     source_link="$source_path"
5280 fi
5281 # cleanup
5282 rm -r "$link_dest"
5283 rm -r "$link_name"
5284
5285 # determine libc flavour
5286
5287 probe_libc(){
5288     pfx=$1
5289     pfx_no_=${pfx%_}
5290     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5291     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5292         eval ${pfx}libc_type=uclibc
5293         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5294     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5295         eval ${pfx}libc_type=glibc
5296         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5297     # MinGW headers can be installed on Cygwin, so check for newlib first.
5298     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5299         eval ${pfx}libc_type=newlib
5300         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5301     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5302     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5303         eval ${pfx}libc_type=mingw64
5304         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5305             add_compat msvcrt/snprintf.o
5306             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5307         fi
5308         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5309         eval test \$${pfx_no_}cc_type = "gcc" &&
5310             add_${pfx}cppflags -D__printf__=__gnu_printf__
5311         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5312             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5313     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5314          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5315         eval ${pfx}libc_type=mingw32
5316         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5317             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5318             die "ERROR: MinGW32 runtime version must be >= 3.15."
5319         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5320         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5321             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5322         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5323             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5324         eval test \$${pfx_no_}cc_type = "gcc" &&
5325             add_${pfx}cppflags -D__printf__=__gnu_printf__
5326     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5327         eval ${pfx}libc_type=msvcrt
5328         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5329             if [ "$pfx" = host_ ]; then
5330                 add_host_cppflags -Dsnprintf=_snprintf
5331             else
5332                 add_compat strtod.o strtod=avpriv_strtod
5333                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5334                                              _snprintf=avpriv_snprintf  \
5335                                              vsnprintf=avpriv_vsnprintf
5336             fi
5337         fi
5338         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5339         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5340         # 0x601 by default unless something else is set by the user.
5341         # This can easily lead to us detecting functions only present
5342         # in such new versions and producing binaries requiring windows 7.0.
5343         # Therefore explicitly set the default to Vista unless the user has
5344         # set something else on the command line.
5345         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5346         # family. For these cases, configure is free to use any functions
5347         # found in the SDK headers by default. (Alternatively, we could force
5348         # _WIN32_WINNT to 0x0602 in that case.)
5349         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5350             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5351 #ifdef WINAPI_FAMILY
5352 #include <winapifamily.h>
5353 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5354 #error not desktop
5355 #endif
5356 #endif
5357 EOF
5358         if [ "$pfx" = "" ]; then
5359             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5360             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5361         fi
5362     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5363         eval ${pfx}libc_type=klibc
5364     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5365         eval ${pfx}libc_type=bionic
5366     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5367         eval ${pfx}libc_type=solaris
5368         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5369     fi
5370     test_${pfx}cc <<EOF
5371 #include <time.h>
5372 void *v = localtime_r;
5373 EOF
5374 test "$?" != 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
5375 #include <time.h>
5376 void *v = localtime_r;
5377 EOF
5378
5379     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5380 }
5381
5382 probe_libc
5383 probe_libc host_
5384
5385 # hacks for compiler/libc/os combinations
5386
5387 case $libc_type in
5388     bionic)
5389         add_compat strtod.o strtod=avpriv_strtod
5390         ;;
5391 esac
5392
5393 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5394     add_cppflags '-I\$(SRC_PATH)/compat/float'
5395
5396 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5397
5398 set_default libdir
5399 : ${shlibdir_default:="$libdir"}
5400 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5401
5402 set_default $PATHS_LIST
5403 set_default nm
5404
5405 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5406
5407 enable_weak_pic() {
5408     disabled pic && return
5409     enable pic
5410     add_cppflags -DPIC
5411     case "$target_os" in
5412     mingw*|cygwin*|win*)
5413         ;;
5414     *)
5415         add_cflags -fPIC
5416         add_asflags -fPIC
5417         ;;
5418     esac
5419 }
5420
5421 enabled pic && enable_weak_pic
5422
5423 test_cc <<EOF || die "Symbol mangling check failed."
5424 int ff_extern;
5425 EOF
5426 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5427 extern_prefix=${sym%%ff_extern*}
5428
5429 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5430
5431 for restrict_keyword in restrict __restrict__ __restrict ""; do
5432     test_code cc "" "char * $restrict_keyword p" && break
5433 done
5434
5435 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5436
5437 # The global variable ensures the bits appear unchanged in the object file.
5438 test_cc <<EOF || die "endian test failed"
5439 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5440 EOF
5441 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5442
5443 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5444
5445 if ! enabled ppc64 || enabled bigendian; then
5446     disable vsx
5447 fi
5448
5449 check_gas() {
5450     log "check_gas using '$as' as AS"
5451     # :vararg is used on aarch64, arm and ppc altivec
5452     check_as vararg "
5453 .macro m n, y:vararg=0
5454 \n: .int \y
5455 .endm
5456 m x" || return 1
5457     # .altmacro is only used in arm asm
5458     ! enabled arm || check_as gnu_as ".altmacro"
5459 }
5460
5461 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5462     nogas=:
5463     enabled_any arm aarch64 && nogas=die
5464     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5465     as_noop=-v
5466
5467     case $as_type in
5468         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5469         gcc)  gaspp_as_type=gas ;;
5470         *)    gaspp_as_type=$as_type ;;
5471     esac
5472
5473     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5474
5475     test "${as#*gas-preprocessor.pl}" != "$as" ||
5476     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5477         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5478
5479     if ! check_gas ; then
5480         as=${gas:=$as}
5481         check_gas || \
5482             $nogas "GNU assembler not found, install/update gas-preprocessor"
5483     fi
5484
5485     check_as as_func ".func test
5486                       .endfunc"
5487 fi
5488
5489 check_inline_asm inline_asm_labels '"1:\n"'
5490
5491 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5492
5493 if enabled aarch64; then
5494     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5495     # internal assembler in clang 3.3 does not support this instruction
5496     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5497     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5498
5499     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5500
5501 elif enabled alpha; then
5502
5503     check_cflags -mieee
5504
5505 elif enabled arm; then
5506
5507     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5508     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5509 float func(float a, float b){ return a+b; }
5510 EOF
5511     enabled thumb && check_cflags -mthumb || check_cflags -marm
5512
5513     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5514         :
5515     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5516         :
5517     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5518         case "${cross_prefix:-$cc}" in
5519             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5520             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5521 __asm__ (".eabi_attribute 28, 1");
5522 int main(void) { return 0; }
5523 EOF
5524         esac
5525         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5526     fi
5527
5528     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5529     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5530     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5531     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5532     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5533     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5534     enabled setend  && check_insn setend  'setend be'
5535
5536     [ $target_os = linux ] || [ $target_os = android ] ||
5537         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5538             $ARCH_EXT_LIST_ARM
5539
5540     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5541
5542     check_as as_arch_directive ".arch armv7-a"
5543     check_as as_dn_directive   "ra .dn d0.i16"
5544     check_as as_fpu_directive  ".fpu neon"
5545
5546     # llvm's integrated assembler supports .object_arch from llvm 3.5
5547     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5548         check_as as_object_arch ".object_arch armv4"
5549
5550     # MS armasm fails to assemble our PIC constructs
5551     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5552
5553 elif enabled mips; then
5554
5555     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5556     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5557     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5558
5559     # Enable minimum ISA based on selected options
5560     if enabled mips64; then
5561         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5562         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5563         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5564     else
5565         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5566         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5567         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5568         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5569     fi
5570
5571     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5572     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5573     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5574     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5575     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5576
5577     if enabled bigendian && enabled msa; then
5578         disable msa
5579     fi
5580
5581 elif enabled parisc; then
5582
5583     if enabled gcc; then
5584         case $($cc -dumpversion) in
5585             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5586         esac
5587     fi
5588
5589 elif enabled ppc; then
5590
5591     enable local_aligned
5592
5593     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5594     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5595     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5596     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5597
5598     if enabled altivec; then
5599         check_cflags -maltivec -mabi=altivec
5600
5601         # check if our compiler supports Motorola AltiVec C API
5602         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5603                                     vector signed int v2 = (vector signed int) { 1 };
5604                                     v1 = vec_add(v1, v2);"
5605
5606         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5607     fi
5608
5609     if enabled vsx; then
5610         check_cflags -mvsx &&
5611         check_cc vsx altivec.h "int v[4] = { 0 };
5612                                 vector signed int v1 = vec_vsx_ld(0, v);"
5613     fi
5614
5615     if enabled power8; then
5616         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5617     fi
5618
5619 elif enabled x86; then
5620
5621     check_builtin rdtsc    intrin.h   "__rdtsc()"
5622     check_builtin mm_empty mmintrin.h "_mm_empty()"
5623
5624     enable local_aligned
5625
5626     # check whether EBP is available on x86
5627     # As 'i' is stored on the stack, this program will crash
5628     # if the base pointer is used to access it because the
5629     # base pointer is cleared in the inline assembly code.
5630     check_exec_crash <<EOF && enable ebp_available
5631 volatile int i=0;
5632 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5633 return i;
5634 EOF
5635
5636     # check whether EBX is available on x86
5637     check_inline_asm ebx_available '""::"b"(0)' &&
5638         check_inline_asm ebx_available '"":::"%ebx"'
5639
5640     # check whether xmm clobbers are supported
5641     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5642
5643     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5644         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5645
5646     # check whether binutils is new enough to compile SSSE3/MMXEXT
5647     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5648     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5649
5650     probe_x86asm(){
5651         x86asmexe_probe=$1
5652         if test_cmd $x86asmexe_probe -v; then
5653             x86asmexe=$x86asmexe_probe
5654             x86asm_type=nasm
5655             x86asm_debug="-g -F dwarf"
5656             X86ASMDEP=
5657             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5658         elif test_cmd $x86asmexe_probe --version; then
5659             x86asmexe=$x86asmexe_probe
5660             x86asm_type=yasm
5661             x86asm_debug="-g dwarf2"
5662             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5663             X86ASM_DEPFLAGS=
5664         fi
5665         check_x86asm x86asm "movbe ecx, [5]"
5666     }
5667
5668     if ! disabled_any asm mmx x86asm; then
5669         disable x86asm
5670         for program in $x86asmexe nasm yasm; do
5671             probe_x86asm $program && break
5672         done
5673         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5674         X86ASMFLAGS="-f $objformat"
5675         enabled pic               && append X86ASMFLAGS "-DPIC"
5676         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5677         case "$objformat" in
5678             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5679         esac
5680
5681         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5682         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5683         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5684         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5685         check_x86asm cpunop          "CPU amdnop"
5686     fi
5687
5688     case "$cpu" in
5689         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5690             disable fast_clz
5691         ;;
5692     esac
5693
5694 fi
5695
5696 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5697
5698 check_ldflags -Wl,--as-needed
5699 check_ldflags -Wl,-z,noexecstack
5700
5701 if ! disabled network; then
5702     check_func getaddrinfo $network_extralibs
5703     check_func inet_aton $network_extralibs
5704
5705     check_type netdb.h "struct addrinfo"
5706     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5707     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5708     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5709     check_type poll.h "struct pollfd"
5710     check_type netinet/sctp.h "struct sctp_event_subscribe"
5711     check_struct "sys/socket.h" "struct msghdr" msg_flags
5712     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5713     check_type netinet/in.h "struct sockaddr_in6"
5714     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5715     check_type "sys/types.h sys/socket.h" socklen_t
5716
5717     # Prefer arpa/inet.h over winsock2
5718     if check_header arpa/inet.h ; then
5719         check_func closesocket
5720     elif check_header winsock2.h ; then
5721         check_func_headers winsock2.h closesocket -lws2 &&
5722             network_extralibs="-lws2" ||
5723         { check_func_headers winsock2.h closesocket -lws2_32 &&
5724             network_extralibs="-lws2_32"; } || disable winsock2_h network
5725         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5726
5727         check_type ws2tcpip.h socklen_t
5728         check_type ws2tcpip.h "struct addrinfo"
5729         check_type ws2tcpip.h "struct group_source_req"
5730         check_type ws2tcpip.h "struct ip_mreq_source"
5731         check_type ws2tcpip.h "struct ipv6_mreq"
5732         check_type winsock2.h "struct pollfd"
5733         check_struct winsock2.h "struct sockaddr" sa_len
5734         check_type ws2tcpip.h "struct sockaddr_in6"
5735         check_type ws2tcpip.h "struct sockaddr_storage"
5736     else
5737         disable network
5738     fi
5739 fi
5740
5741 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5742 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5743 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5744 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5745 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5746 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5747 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5748
5749 case "$custom_allocator" in
5750     jemalloc)
5751         # jemalloc by default does not use a prefix
5752         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5753     ;;
5754     tcmalloc)
5755         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5756         malloc_prefix=tc_
5757     ;;
5758 esac
5759
5760 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5761 check_func  ${malloc_prefix}memalign            && enable memalign
5762 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5763
5764 check_func  access
5765 check_func_headers stdlib.h arc4random
5766 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5767 check_func  fcntl
5768 check_func  fork
5769 check_func  gethrtime
5770 check_func  getopt
5771 check_func  getrusage
5772 check_func  gettimeofday
5773 check_func  isatty
5774 check_func  mkstemp
5775 check_func  mmap
5776 check_func  mprotect
5777 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5778 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5779 check_func  sched_getaffinity
5780 check_func  setrlimit
5781 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5782 check_func  strerror_r
5783 check_func  sysconf
5784 check_func  sysctl
5785 check_func  usleep
5786
5787 check_func_headers conio.h kbhit
5788 check_func_headers io.h setmode
5789 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5790 check_func_headers mach/mach_time.h mach_absolute_time
5791 check_func_headers stdlib.h getenv
5792 check_func_headers sys/stat.h lstat
5793
5794 check_func_headers windows.h GetProcessAffinityMask
5795 check_func_headers windows.h GetProcessTimes
5796 check_func_headers windows.h GetSystemTimeAsFileTime
5797 check_func_headers windows.h LoadLibrary
5798 check_func_headers windows.h MapViewOfFile
5799 check_func_headers windows.h PeekNamedPipe
5800 check_func_headers windows.h SetConsoleTextAttribute
5801 check_func_headers windows.h SetConsoleCtrlHandler
5802 check_func_headers windows.h Sleep
5803 check_func_headers windows.h VirtualAlloc
5804 check_func_headers glob.h glob
5805 enabled xlib &&
5806     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5807
5808 check_header direct.h
5809 check_header dirent.h
5810 check_header dxgidebug.h
5811 check_header dxva.h
5812 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5813 check_header io.h
5814 check_header linux/perf_event.h
5815 check_header libcrystalhd/libcrystalhd_if.h
5816 check_header malloc.h
5817 check_header net/udplite.h
5818 check_header poll.h
5819 check_header sys/param.h
5820 check_header sys/resource.h
5821 check_header sys/select.h
5822 check_header sys/time.h
5823 check_header sys/un.h
5824 check_header termios.h
5825 check_header unistd.h
5826 check_header valgrind/valgrind.h
5827 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5828 check_header windows.h
5829 check_header X11/extensions/XvMClib.h
5830 check_header asm/types.h
5831
5832 # it seems there are versions of clang in some distros that try to use the
5833 # gcc headers, which explodes for stdatomic
5834 # so we also check that atomics actually work here
5835 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5836
5837 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5838 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5839     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5840 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5841 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5842 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5843
5844 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5845 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5846 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5847
5848 enabled appkit       && check_apple_framework AppKit
5849 enabled audiotoolbox && check_apple_framework AudioToolbox
5850 enabled avfoundation && check_apple_framework AVFoundation
5851 enabled coreimage    && check_apple_framework CoreImage
5852 enabled videotoolbox && check_apple_framework VideoToolbox
5853
5854 check_apple_framework CoreFoundation
5855 check_apple_framework CoreMedia
5856 check_apple_framework CoreVideo
5857
5858 enabled avfoundation && {
5859     disable coregraphics applicationservices
5860     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5861     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5862
5863 enabled videotoolbox && {
5864     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5865     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5866 }
5867
5868 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5869
5870 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5871 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5872 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5873 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5874 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5875
5876 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5877 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5878 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5879 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5880 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5881 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5882 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5883 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5884 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5885 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5886
5887 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5888
5889 if ! disabled ffnvcodec; then
5890     check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.1" \
5891         "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5892 fi
5893
5894 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5895
5896 if ! disabled w32threads && ! enabled pthreads; then
5897     check_func_headers "windows.h process.h" _beginthreadex &&
5898         check_type "windows.h" CONDITION_VARIABLE &&
5899         check_type "windows.h" INIT_ONCE &&
5900         enable w32threads || disable w32threads
5901     if ! enabled w32threads && enabled winrt; then
5902         check_func_headers "windows.h" CreateThread &&
5903             enable w32threads || disable w32threads
5904     fi
5905 fi
5906
5907 # check for some common methods of building with pthread support
5908 # do this before the optional library checks as some of them require pthreads
5909 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5910     if check_lib pthreads pthread.h pthread_join   -pthread &&
5911        check_lib pthreads pthread.h pthread_create -pthread; then
5912         add_cflags -pthread
5913     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5914          check_lib pthreads pthread.h pthread_create -pthreads; then
5915         add_cflags -pthreads
5916     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5917          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5918         add_cflags -ldl -pthread
5919     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5920          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5921         :
5922     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5923          check_lib pthreads pthread.h pthread_create -lpthread; then
5924         :
5925     elif check_func pthread_join && check_func pthread_create; then
5926         enable pthreads
5927     fi
5928     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5929
5930     if enabled pthreads; then
5931         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5932         check_func pthread_cancel $pthreads_extralibs
5933     fi
5934 fi
5935
5936 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5937 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5938 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5939
5940 # On some systems dynamic loading requires no extra linker flags
5941 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5942
5943 check_lib libm math.h sin -lm
5944
5945 atan2f_args=2
5946 copysign_args=2
5947 hypot_args=2
5948 ldexpf_args=2
5949 powf_args=2
5950
5951 for func in $MATH_FUNCS; do
5952     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5953 done
5954
5955 for func in $COMPLEX_FUNCS; do
5956     eval check_complexfunc $func \${${func}_args:-1}
5957 done
5958
5959 # these are off by default, so fail if requested and not available
5960 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5961 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5962 enabled decklink          && { require_header DeckLinkAPI.h &&
5963                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5964 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5965 enabled frei0r            && require_header frei0r.h
5966 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5967 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5968 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5969 enabled ladspa            && require_header ladspa.h
5970 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5971 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5972 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5973 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5974 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5975 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5976 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5977                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5978                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5979 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5980 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
5981 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5982 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5983 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5984                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5985                                  warn "using libfdk without pkg-config"; } }
5986 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"
5987 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5988 enabled fontconfig        && enable libfontconfig
5989 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5990 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5991 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5992 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5993                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5994 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5995                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5996                                done || die "ERROR: libgsm not found"; }
5997 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5998 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5999 # While it may appear that require is being used as a pkg-config
6000 # fallback for libmfx, it is actually being used to detect a different
6001 # installation route altogether.  If libmfx is installed via the Intel
6002 # Media SDK or Intel Media Server Studio, these don't come with
6003 # pkg-config support.  Instead, users should make sure that the build
6004 # can find the libraries and headers through other means.
6005 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6006                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6007 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6008 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6009 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
6010 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6011                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6012                                die "ERROR: libnpp not found"; }
6013 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6014 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6015 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6016                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6017                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6018                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6019 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6020 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6021                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6022 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6023 enabled libopus           && {
6024     enabled libopus_decoder && {
6025         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6026     }
6027     enabled libopus_encoder && {
6028         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6029     }
6030 }
6031 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6032 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6033 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6034 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6035 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6036 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6037                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6038 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6039 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6040 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6041 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6042 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6043 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6044 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6045 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6046 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6047                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6048                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6049 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6050 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6051 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6052 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6053 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6054                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6055
6056 enabled libvpx            && {
6057     enabled libvpx_vp8_decoder && {
6058         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6059             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6060                 die "ERROR: libvpx decoder version must be >=1.4.0";
6061     }
6062     enabled libvpx_vp8_encoder && {
6063         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6064             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6065                 die "ERROR: libvpx encoder version must be >=1.4.0";
6066     }
6067     enabled libvpx_vp9_decoder && {
6068         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6069             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6070     }
6071     enabled libvpx_vp9_encoder && {
6072         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6073             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6074     }
6075     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6076         die "libvpx enabled but no supported decoders found"
6077     fi
6078 }
6079
6080 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6081 enabled libwebp           && {
6082     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6083     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6084 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6085                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6086                                  warn "using libx264 without pkg-config"; } } &&
6087                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6088                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6089 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6090                              require_cpp_condition x265.h "X265_BUILD >= 68"
6091 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6092 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6093 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6094 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6095 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6096                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6097                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6098 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6099 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6100 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6101                                { ! enabled cross_compile &&
6102                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6103                                  add_ldflags -L/opt/vc/lib/ &&
6104                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6105                                die "ERROR: mmal not found" &&
6106                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6107 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6108                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6109                                die "ERROR: openal not found"; } &&
6110                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6111                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6112 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6113                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6114                                die "ERROR: opencl not found"; } &&
6115                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6116                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6117                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6118 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6119                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6120                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6121                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6122                                die "ERROR: opengl not found."
6123                              }
6124 enabled omx               && require_header OMX_Core.h
6125 enabled omx_rpi           && { check_header OMX_Core.h ||
6126                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6127                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6128 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6129                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6130                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6131                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6132                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6133                                die "ERROR: openssl not found"; }
6134 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6135                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6136                                { enabled libdrm ||
6137                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6138                              }
6139 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6140
6141
6142 if enabled gcrypt; then
6143     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6144     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6145         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6146         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6147         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6148             die "ERROR: gcrypt not found"
6149         add_cflags $gcrypt_cflags
6150     else
6151         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6152     fi
6153 fi
6154
6155 if enabled sdl2; then
6156     SDL2_CONFIG="${cross_prefix}sdl2-config"
6157     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6158     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6159         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6160         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6161         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6162         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6163         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6164             enable sdl2
6165     fi
6166     if test $target_os = "mingw32"; then
6167         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6168     fi
6169 fi
6170
6171 if enabled decklink; then
6172     case $target_os in
6173         mingw32*|mingw64*|win32|win64)
6174             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6175             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6176             ;;
6177     esac
6178 fi
6179
6180 enabled securetransport &&
6181     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6182     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6183         disable securetransport
6184
6185 enabled securetransport &&
6186     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6187
6188 enabled schannel &&
6189     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6190     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6191     schannel_extralibs="-lsecur32" ||
6192         disable schannel
6193
6194 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6195 enabled makeinfo \
6196     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6197     && enable makeinfo_html || disable makeinfo_html
6198 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6199 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6200 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6201 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6202
6203 # check V4L2 codecs available in the API
6204 check_header linux/fb.h
6205 check_header linux/videodev2.h
6206 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6207 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6208 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6209 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6210 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6211 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6212 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6213 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6214 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6215 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6216 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6217
6218 check_header sys/videoio.h
6219 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6220
6221 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6222 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6223 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6224 # w32api 3.12 had it defined wrong
6225 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6226
6227 check_type "dshow.h" IBaseFilter
6228
6229 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6230 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6231     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6232     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6233     check_header "dev/ic/bt8xx.h"
6234
6235 if check_struct sys/soundcard.h audio_buf_info bytes; then
6236     enable_sanitized sys/soundcard.h
6237 else
6238     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6239     #include <sys/soundcard.h>
6240     audio_buf_info abc;
6241 EOF
6242 fi
6243
6244 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6245     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6246
6247 enabled libjack &&
6248     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6249
6250 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6251
6252 if enabled libcdio; then
6253     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6254     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6255     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6256     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6257     die "ERROR: No usable libcdio/cdparanoia found"
6258 fi
6259
6260 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6261     disable libxcb_shm libxcb_shape libxcb_xfixes
6262
6263 if enabled libxcb; then
6264     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6265     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6266     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6267 fi
6268
6269 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6270
6271 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6272 # the desktop api partition
6273 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6274 #ifdef WINAPI_FAMILY
6275 #include <winapifamily.h>
6276 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6277 #error desktop, not uwp
6278 #else
6279 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6280 #endif
6281 #else
6282 #error no family set
6283 #endif
6284 EOF
6285
6286 enabled vaapi &&
6287     check_lib vaapi va/va.h vaInitialize -lva
6288
6289 enabled vaapi &&
6290     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6291
6292 if enabled vaapi; then
6293     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6294     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6295 fi
6296
6297 enabled vaapi &&
6298     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6299
6300 if enabled_all opencl libdrm ; then
6301     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6302         enable opencl_drm_beignet
6303     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6304         enable opencl_drm_arm
6305 fi
6306
6307 if enabled_all opencl vaapi ; then
6308     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6309     if enabled libmfx ; then
6310         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6311             enable opencl_vaapi_intel_media
6312     fi
6313 fi
6314
6315 if enabled_all opencl dxva2 ; then
6316     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6317         enable opencl_dxva2
6318 fi
6319
6320 if enabled_all opencl d3d11va ; then
6321     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6322         enable opencl_d3d11
6323 fi
6324
6325 enabled vdpau &&
6326     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6327
6328 enabled vdpau &&
6329     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6330
6331 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6332
6333 if enabled x86; then
6334     case $target_os in
6335         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6336             ;;
6337         *)
6338             disable ffnvcodec cuvid nvdec nvenc
6339             ;;
6340     esac
6341 else
6342     disable ffnvcodec cuvid nvdec nvenc
6343 fi
6344
6345 enabled ffnvcodec && enable cuda
6346
6347 enabled nvenc &&
6348     test_cc -I$source_path <<EOF || disable nvenc
6349 #include <ffnvcodec/nvEncodeAPI.h>
6350 NV_ENCODE_API_FUNCTION_LIST flist;
6351 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6352 int main(void) { return 0; }
6353 EOF
6354
6355 enabled amf &&
6356     check_cpp_condition amf "AMF/core/Version.h" \
6357         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6358
6359 # Funny iconv installations are not unusual, so check it after all flags have been set
6360 if enabled libc_iconv; then
6361     check_func_headers iconv.h iconv
6362 elif enabled iconv; then
6363     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6364 fi
6365
6366 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6367
6368 # add some useful compiler flags if supported
6369 check_cflags -Wdeclaration-after-statement
6370 check_cflags -Wall
6371 check_cflags -Wdisabled-optimization
6372 check_cflags -Wpointer-arith
6373 check_cflags -Wredundant-decls
6374 check_cflags -Wwrite-strings
6375 check_cflags -Wtype-limits
6376 check_cflags -Wundef
6377 check_cflags -Wmissing-prototypes
6378 check_cflags -Wno-pointer-to-int-cast
6379 check_cflags -Wstrict-prototypes
6380 check_cflags -Wempty-body
6381
6382 if enabled extra_warnings; then
6383     check_cflags -Wcast-qual
6384     check_cflags -Wextra
6385     check_cflags -Wpedantic
6386 fi
6387
6388 check_disable_warning(){
6389     warning_flag=-W${1#-Wno-}
6390     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6391 }
6392
6393 test_cflags -Werror=unused-command-line-argument &&
6394     append unknown_warning_flags "-Werror=unused-command-line-argument"
6395 test_cflags -Werror=unknown-warning-option &&
6396     append unknown_warning_flags "-Werror=unknown-warning-option"
6397
6398 check_disable_warning -Wno-parentheses
6399 check_disable_warning -Wno-switch
6400 check_disable_warning -Wno-format-zero-length
6401 check_disable_warning -Wno-pointer-sign
6402 check_disable_warning -Wno-unused-const-variable
6403 check_disable_warning -Wno-bool-operation
6404
6405 check_disable_warning_headers(){
6406     warning_flag=-W${1#-Wno-}
6407     test_cflags $warning_flag && add_cflags_headers $1
6408 }
6409
6410 check_disable_warning_headers -Wno-deprecated-declarations
6411 check_disable_warning_headers -Wno-unused-variable
6412
6413 test_cc <<EOF && enable blocks_extension
6414 void (^block)(void);
6415 EOF
6416
6417 # add some linker flags
6418 check_ldflags -Wl,--warn-common
6419 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6420 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6421 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6422
6423 # add some strip flags
6424 check_stripflags -x
6425
6426 enabled neon_clobber_test &&
6427     check_ldflags -Wl,--wrap,avcodec_open2              \
6428                   -Wl,--wrap,avcodec_decode_audio4      \
6429                   -Wl,--wrap,avcodec_decode_video2      \
6430                   -Wl,--wrap,avcodec_decode_subtitle2   \
6431                   -Wl,--wrap,avcodec_encode_audio2      \
6432                   -Wl,--wrap,avcodec_encode_video2      \
6433                   -Wl,--wrap,avcodec_encode_subtitle    \
6434                   -Wl,--wrap,avcodec_send_packet        \
6435                   -Wl,--wrap,avcodec_receive_packet     \
6436                   -Wl,--wrap,avcodec_send_frame         \
6437                   -Wl,--wrap,avcodec_receive_frame      \
6438                   -Wl,--wrap,swr_convert                \
6439                   -Wl,--wrap,avresample_convert ||
6440     disable neon_clobber_test
6441
6442 enabled xmm_clobber_test &&
6443     check_ldflags -Wl,--wrap,avcodec_open2              \
6444                   -Wl,--wrap,avcodec_decode_audio4      \
6445                   -Wl,--wrap,avcodec_decode_video2      \
6446                   -Wl,--wrap,avcodec_decode_subtitle2   \
6447                   -Wl,--wrap,avcodec_encode_audio2      \
6448                   -Wl,--wrap,avcodec_encode_video2      \
6449                   -Wl,--wrap,avcodec_encode_subtitle    \
6450                   -Wl,--wrap,avcodec_send_packet        \
6451                   -Wl,--wrap,avcodec_receive_packet     \
6452                   -Wl,--wrap,avcodec_send_frame         \
6453                   -Wl,--wrap,avcodec_receive_frame      \
6454                   -Wl,--wrap,swr_convert                \
6455                   -Wl,--wrap,avresample_convert         \
6456                   -Wl,--wrap,sws_scale ||
6457     disable xmm_clobber_test
6458
6459 check_ld "cc" proper_dce <<EOF
6460 extern const int array[512];
6461 static inline int func(void) { return array[0]; }
6462 int main(void) { return 0; }
6463 EOF
6464
6465 if enabled proper_dce; then
6466     echo "X { local: *; };" > $TMPV
6467     if test_ldflags -Wl,${version_script},$TMPV; then
6468         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6469         quotes='""'
6470         test_cc <<EOF && enable symver_asm_label
6471 void ff_foo(void) __asm__ ("av_foo@VERSION");
6472 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6473 EOF
6474         test_cc <<EOF && enable symver_gnu_asm
6475 __asm__(".symver ff_foo,av_foo@VERSION");
6476 void ff_foo(void) {}
6477 EOF
6478     fi
6479 fi
6480
6481 if [ -z "$optflags" ]; then
6482     if enabled small; then
6483         optflags=$cflags_size
6484     elif enabled optimizations; then
6485         optflags=$cflags_speed
6486     else
6487         optflags=$cflags_noopt
6488     fi
6489 fi
6490
6491 if [ -z "$nvccflags" ]; then
6492     nvccflags=$nvccflags_default
6493 fi
6494
6495 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6496     nvccflags="$nvccflags -m64"
6497 else
6498     nvccflags="$nvccflags -m32"
6499 fi
6500
6501 check_optflags(){
6502     check_cflags "$@"
6503     enabled lto && check_ldflags "$@"
6504 }
6505
6506 check_optflags $optflags
6507 check_optflags -fno-math-errno
6508 check_optflags -fno-signed-zeros
6509
6510 if enabled lto; then
6511     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6512     check_cflags  -flto
6513     check_ldflags -flto $cpuflags
6514     disable inline_asm_direct_symbol_refs
6515 fi
6516
6517 enabled ftrapv && check_cflags -ftrapv
6518
6519 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6520 int x;
6521 EOF
6522
6523
6524 if enabled icc; then
6525     # Just warnings, no remarks
6526     check_cflags -w1
6527     # -wd: Disable following warnings
6528     # 144, 167, 556: -Wno-pointer-sign
6529     # 188: enumerated type mixed with another type
6530     # 1292: attribute "foo" ignored
6531     # 1419: external declaration in primary source file
6532     # 10006: ignoring unknown option -fno-signed-zeros
6533     # 10148: ignoring unknown option -Wno-parentheses
6534     # 10156: ignoring option '-W'; no argument required
6535     # 13200: No EMMS instruction before call to function
6536     # 13203: No EMMS instruction before return from function
6537     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6538     # 11030: Warning unknown option --as-needed
6539     # 10156: ignoring option '-export'; no argument required
6540     check_ldflags -wd10156,11030
6541     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6542     enable ebp_available
6543     # The test above does not test linking
6544     enabled lto && disable symver_asm_label
6545     if enabled x86_32; then
6546         icc_version=$($cc -dumpversion)
6547         test ${icc_version%%.*} -ge 11 &&
6548             check_cflags -falign-stack=maintain-16-byte ||
6549             disable aligned_stack
6550     fi
6551 elif enabled gcc; then
6552     check_optflags -fno-tree-vectorize
6553     check_cflags -Werror=format-security
6554     check_cflags -Werror=implicit-function-declaration
6555     check_cflags -Werror=missing-prototypes
6556     check_cflags -Werror=return-type
6557     check_cflags -Werror=vla
6558     check_cflags -Wformat
6559     check_cflags -fdiagnostics-color=auto
6560     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6561     if enabled x86_32; then
6562         case $target_os in
6563         *bsd*)
6564             # BSDs don't guarantee a 16 byte aligned stack, but we can
6565             # request GCC to try to maintain 16 byte alignment throughout
6566             # function calls. Library entry points that might call assembly
6567             # functions align the stack. (The parameter means 2^4 bytes.)
6568             check_cflags -mpreferred-stack-boundary=4
6569             ;;
6570         esac
6571     fi
6572 elif enabled llvm_gcc; then
6573     check_cflags -mllvm -stack-alignment=16
6574 elif enabled clang; then
6575     if enabled x86_32; then
6576         # Clang doesn't support maintaining alignment without assuming the
6577         # same alignment in every function. If 16 byte alignment would be
6578         # enabled, one would also have to either add attribute_align_arg on
6579         # every single entry point into the libraries or enable -mstackrealign
6580         # (doing stack realignment in every single function).
6581         case $target_os in
6582         mingw32|win32|*bsd*)
6583             disable aligned_stack
6584             ;;
6585         *)
6586             check_cflags -mllvm -stack-alignment=16
6587             check_cflags -mstack-alignment=16
6588             ;;
6589         esac
6590     else
6591         check_cflags -mllvm -stack-alignment=16
6592         check_cflags -mstack-alignment=16
6593     fi
6594     check_cflags -Qunused-arguments
6595     check_cflags -Werror=implicit-function-declaration
6596     check_cflags -Werror=missing-prototypes
6597     check_cflags -Werror=return-type
6598 elif enabled cparser; then
6599     add_cflags -Wno-missing-variable-declarations
6600     add_cflags -Wno-empty-statement
6601 elif enabled armcc; then
6602     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6603     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6604     # 2523: use of inline assembly is deprecated
6605     add_cflags -W${armcc_opt},--diag_suppress=2523
6606     add_cflags -W${armcc_opt},--diag_suppress=1207
6607     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6608     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6609     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6610     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6611 elif enabled pathscale; then
6612     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6613     disable inline_asm
6614 elif enabled_any msvc icl; then
6615     enabled x86_32 && disable aligned_stack
6616     enabled_all x86_32 debug && add_cflags -Oy-
6617     enabled debug && add_ldflags -debug
6618     enable pragma_deprecated
6619     if enabled icl; then
6620         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6621         # (correctly) on icl 13.x.
6622         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6623             add_cflags -Qansi-alias
6624         # Some inline asm is not compilable in debug
6625         if enabled debug; then
6626             disable ebp_available
6627             disable ebx_available
6628         fi
6629     fi
6630     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6631     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6632     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6633     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6634     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6635     # MSVC 2013 and newer can handle it fine.
6636     # If this declspec fails, force including stdlib.h before the restrict redefinition
6637     # happens in config.h.
6638     if [ $restrict_keyword != restrict ]; then
6639         test_cc <<EOF || add_cflags -FIstdlib.h
6640 __declspec($restrict_keyword) void *foo(int);
6641 EOF
6642     fi
6643     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6644     # Issue has been fixed in MSVC v19.00.24218.
6645     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6646         check_cflags -d2SSAOptimizer-
6647     # enable utf-8 source processing on VS2015 U2 and newer
6648     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6649         add_cflags -utf-8
6650 fi
6651
6652 for pfx in "" host_; do
6653     varname=${pfx%_}cc_type
6654     eval "type=\$$varname"
6655     if [ "$type" = "msvc" ]; then
6656         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6657 static inline int foo(int a) { return a; }
6658 EOF
6659     fi
6660 done
6661
6662 case $as_type in
6663     clang)
6664         add_asflags -Qunused-arguments
6665     ;;
6666 esac
6667
6668 case $ld_type in
6669     clang)
6670         check_ldflags -Qunused-arguments
6671     ;;
6672 esac
6673
6674 enable frame_thread_encoder
6675
6676 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6677
6678 check_deps $CONFIG_LIST       \
6679            $CONFIG_EXTRA      \
6680            $HAVE_LIST         \
6681            $ALL_COMPONENTS    \
6682
6683 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"
6684 enabled avresample && warn "Building with deprecated library libavresample"
6685
6686 if test $target_os = "haiku"; then
6687     disable memalign
6688     disable posix_memalign
6689 fi
6690
6691 flatten_extralibs(){
6692     unset nested_entries
6693     list_name=$1
6694     eval list=\$${1}
6695     for entry in $list; do
6696         entry_copy=$entry
6697         resolve entry_copy
6698         append nested_entries $(filter '*_extralibs' $entry_copy)
6699         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6700         eval $entry="\$flat_entries"
6701     done
6702     append $list_name "$nested_entries"
6703
6704     resolve nested_entries
6705     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6706         flatten_extralibs $list_name
6707     fi
6708 }
6709
6710 flatten_extralibs_wrapper(){
6711     list_name=$1
6712     flatten_extralibs $list_name
6713     unique $list_name
6714     resolve $list_name
6715     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6716     eval printf \''%s'\' \""\$$list_name"\"
6717 }
6718
6719 for linkunit in $LIBRARY_LIST; do
6720     unset current_extralibs
6721     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6722     for comp in ${components}; do
6723         enabled $comp || continue
6724         comp_extralibs="${comp}_extralibs"
6725         append current_extralibs $comp_extralibs
6726     done
6727     eval prepend ${linkunit}_extralibs $current_extralibs
6728 done
6729
6730 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6731     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6732 done
6733
6734 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6735
6736 for thread in $THREADS_LIST; do
6737     if enabled $thread; then
6738         test -n "$thread_type" &&
6739             die "ERROR: Only one thread type must be selected." ||
6740             thread_type="$thread"
6741     fi
6742 done
6743
6744 if disabled stdatomic; then
6745     if enabled atomics_gcc; then
6746         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6747     elif enabled atomics_win32; then
6748         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6749     elif enabled atomics_suncc; then
6750         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6751     elif enabled pthreads; then
6752         add_compat atomics/pthread/stdatomic.o
6753         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6754     else
6755         enabled threads && die "Threading is enabled, but no atomics are available"
6756         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6757     fi
6758 fi
6759
6760 # Check if requested libraries were found.
6761 for lib in $AUTODETECT_LIBS; do
6762     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6763 done
6764
6765 enabled zlib && add_cppflags -DZLIB_CONST
6766
6767 # conditional library dependencies, in linking order
6768 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6769 enabled afir_filter         && prepend avfilter_deps "avcodec"
6770 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6771 enabled aresample_filter    && prepend avfilter_deps "swresample"
6772 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6773 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6774 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6775 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6776 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6777 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6778 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6779 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6780 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6781 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6782 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6783 enabled pan_filter          && prepend avfilter_deps "swresample"
6784 enabled pp_filter           && prepend avfilter_deps "postproc"
6785 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6786 enabled resample_filter && prepend avfilter_deps "avresample"
6787 enabled sab_filter          && prepend avfilter_deps "swscale"
6788 enabled scale_filter    && prepend avfilter_deps "swscale"
6789 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6790 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6791 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6792 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6793 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6794 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6795 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6796 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6797 enabled spp_filter          && prepend avfilter_deps "avcodec"
6798 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6799 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6800 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6801
6802 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6803
6804 #FIXME
6805 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6806
6807 enabled opus_decoder    && prepend avcodec_deps "swresample"
6808
6809 expand_deps(){
6810     lib_deps=${1}_deps
6811     eval "deps=\$$lib_deps"
6812     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6813     unique $lib_deps
6814 }
6815
6816 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6817 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6818
6819 map 'expand_deps $v' $LIBRARY_LIST
6820
6821 if test "$quiet" != "yes"; then
6822
6823 echo "install prefix            $prefix"
6824 echo "source path               $source_path"
6825 echo "C compiler                $cc"
6826 echo "C library                 $libc_type"
6827 if test "$host_cc" != "$cc"; then
6828     echo "host C compiler           $host_cc"
6829     echo "host C library            $host_libc_type"
6830 fi
6831 echo "ARCH                      $arch ($cpu)"
6832 if test "$build_suffix" != ""; then
6833     echo "build suffix              $build_suffix"
6834 fi
6835 if test "$progs_suffix" != ""; then
6836     echo "progs suffix              $progs_suffix"
6837 fi
6838 if test "$extra_version" != ""; then
6839     echo "version string suffix     $extra_version"
6840 fi
6841 echo "big-endian                ${bigendian-no}"
6842 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6843 if enabled x86; then
6844     echo "standalone assembly       ${x86asm-no}"
6845     echo "x86 assembler             ${x86asmexe}"
6846     echo "MMX enabled               ${mmx-no}"
6847     echo "MMXEXT enabled            ${mmxext-no}"
6848     echo "3DNow! enabled            ${amd3dnow-no}"
6849     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6850     echo "SSE enabled               ${sse-no}"
6851     echo "SSSE3 enabled             ${ssse3-no}"
6852     echo "AESNI enabled             ${aesni-no}"
6853     echo "AVX enabled               ${avx-no}"
6854     echo "AVX2 enabled              ${avx2-no}"
6855     echo "AVX-512 enabled           ${avx512-no}"
6856     echo "XOP enabled               ${xop-no}"
6857     echo "FMA3 enabled              ${fma3-no}"
6858     echo "FMA4 enabled              ${fma4-no}"
6859     echo "i686 features enabled     ${i686-no}"
6860     echo "CMOV is fast              ${fast_cmov-no}"
6861     echo "EBX available             ${ebx_available-no}"
6862     echo "EBP available             ${ebp_available-no}"
6863 fi
6864 if enabled aarch64; then
6865     echo "NEON enabled              ${neon-no}"
6866     echo "VFP enabled               ${vfp-no}"
6867 fi
6868 if enabled arm; then
6869     echo "ARMv5TE enabled           ${armv5te-no}"
6870     echo "ARMv6 enabled             ${armv6-no}"
6871     echo "ARMv6T2 enabled           ${armv6t2-no}"
6872     echo "VFP enabled               ${vfp-no}"
6873     echo "NEON enabled              ${neon-no}"
6874     echo "THUMB enabled             ${thumb-no}"
6875 fi
6876 if enabled mips; then
6877     echo "MIPS FPU enabled          ${mipsfpu-no}"
6878     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6879     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6880     echo "MIPS MSA enabled          ${msa-no}"
6881     echo "LOONGSON MMI enabled      ${mmi-no}"
6882 fi
6883 if enabled ppc; then
6884     echo "AltiVec enabled           ${altivec-no}"
6885     echo "VSX enabled               ${vsx-no}"
6886     echo "POWER8 enabled            ${power8-no}"
6887     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6888     echo "dcbzl available           ${dcbzl-no}"
6889 fi
6890 echo "debug symbols             ${debug-no}"
6891 echo "strip symbols             ${stripping-no}"
6892 echo "optimize for size         ${small-no}"
6893 echo "optimizations             ${optimizations-no}"
6894 echo "static                    ${static-no}"
6895 echo "shared                    ${shared-no}"
6896 echo "postprocessing support    ${postproc-no}"
6897 echo "network support           ${network-no}"
6898 echo "threading support         ${thread_type-no}"
6899 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6900 echo "texi2html enabled         ${texi2html-no}"
6901 echo "perl enabled              ${perl-no}"
6902 echo "pod2man enabled           ${pod2man-no}"
6903 echo "makeinfo enabled          ${makeinfo-no}"
6904 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6905 test -n "$random_seed" &&
6906     echo "random seed               ${random_seed}"
6907 echo
6908
6909 echo "External libraries:"
6910 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6911 echo
6912
6913 echo "External libraries providing hardware acceleration:"
6914 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6915 echo
6916
6917 echo "Libraries:"
6918 print_enabled '' $LIBRARY_LIST | print_in_columns
6919 echo
6920
6921 echo "Programs:"
6922 print_enabled '' $PROGRAM_LIST | print_in_columns
6923 echo
6924
6925 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6926     echo "Enabled ${type}s:"
6927     eval list=\$$(toupper $type)_LIST
6928     print_enabled '_*' $list | print_in_columns
6929     echo
6930 done
6931
6932 if test -n "$ignore_tests"; then
6933     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6934     echo "Ignored FATE tests:"
6935     echo $ignore_tests | print_in_columns
6936     echo
6937 fi
6938
6939 echo "License: $license"
6940
6941 fi # test "$quiet" != "yes"
6942
6943 if test -n "$WARNINGS"; then
6944     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6945     enabled fatal_warnings && exit 1
6946 fi
6947
6948 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6949
6950 esc(){
6951     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6952 }
6953
6954 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6955
6956 enabled stripping || strip="echo skipping strip"
6957 enabled stripping || striptype=""
6958
6959 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6960
6961 cat > ffbuild/config.mak <<EOF
6962 # Automatically generated by configure - do not modify!
6963 ifndef FFMPEG_CONFIG_MAK
6964 FFMPEG_CONFIG_MAK=1
6965 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6966 prefix=$prefix
6967 LIBDIR=\$(DESTDIR)$libdir
6968 SHLIBDIR=\$(DESTDIR)$shlibdir
6969 INCDIR=\$(DESTDIR)$incdir
6970 BINDIR=\$(DESTDIR)$bindir
6971 DATADIR=\$(DESTDIR)$datadir
6972 DOCDIR=\$(DESTDIR)$docdir
6973 MANDIR=\$(DESTDIR)$mandir
6974 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6975 INSTALL_NAME_DIR=$install_name_dir
6976 SRC_PATH=$source_path
6977 SRC_LINK=$source_link
6978 ifndef MAIN_MAKEFILE
6979 SRC_PATH:=\$(SRC_PATH:.%=..%)
6980 endif
6981 CC_IDENT=$cc_ident
6982 ARCH=$arch
6983 INTRINSICS=$intrinsics
6984 EXTERN_PREFIX=$extern_prefix
6985 CC=$cc
6986 CXX=$cxx
6987 AS=$as
6988 OBJCC=$objcc
6989 LD=$ld
6990 DEPCC=$dep_cc
6991 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6992 DEPAS=$as
6993 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6994 X86ASM=$x86asmexe
6995 DEPX86ASM=$x86asmexe
6996 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6997 AR=$ar
6998 ARFLAGS=$arflags
6999 AR_O=$ar_o
7000 AR_CMD=$ar
7001 NM_CMD=$nm
7002 RANLIB=$ranlib
7003 STRIP=$strip
7004 STRIPTYPE=$striptype
7005 NVCC=$nvcc
7006 CP=cp -p
7007 LN_S=$ln_s
7008 CPPFLAGS=$CPPFLAGS
7009 CFLAGS=$CFLAGS
7010 CXXFLAGS=$CXXFLAGS
7011 OBJCFLAGS=$OBJCFLAGS
7012 ASFLAGS=$ASFLAGS
7013 NVCCFLAGS=$nvccflags
7014 AS_C=$AS_C
7015 AS_O=$AS_O
7016 OBJCC_C=$OBJCC_C
7017 OBJCC_E=$OBJCC_E
7018 OBJCC_O=$OBJCC_O
7019 CC_C=$CC_C
7020 CC_E=$CC_E
7021 CC_O=$CC_O
7022 CXX_C=$CXX_C
7023 CXX_O=$CXX_O
7024 NVCC_C=$NVCC_C
7025 NVCC_O=$NVCC_O
7026 LD_O=$LD_O
7027 X86ASM_O=$X86ASM_O
7028 LD_LIB=$LD_LIB
7029 LD_PATH=$LD_PATH
7030 DLLTOOL=$dlltool
7031 WINDRES=$windres
7032 DEPWINDRES=$dep_cc
7033 DOXYGEN=$doxygen
7034 LDFLAGS=$LDFLAGS
7035 LDEXEFLAGS=$LDEXEFLAGS
7036 LDSOFLAGS=$LDSOFLAGS
7037 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7038 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7039 X86ASMFLAGS=$X86ASMFLAGS
7040 BUILDSUF=$build_suffix
7041 PROGSSUF=$progs_suffix
7042 FULLNAME=$FULLNAME
7043 LIBPREF=$LIBPREF
7044 LIBSUF=$LIBSUF
7045 LIBNAME=$LIBNAME
7046 SLIBPREF=$SLIBPREF
7047 SLIBSUF=$SLIBSUF
7048 EXESUF=$EXESUF
7049 EXTRA_VERSION=$extra_version
7050 CCDEP=$CCDEP
7051 CXXDEP=$CXXDEP
7052 CCDEP_FLAGS=$CCDEP_FLAGS
7053 ASDEP=$ASDEP
7054 ASDEP_FLAGS=$ASDEP_FLAGS
7055 X86ASMDEP=$X86ASMDEP
7056 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7057 CC_DEPFLAGS=$CC_DEPFLAGS
7058 AS_DEPFLAGS=$AS_DEPFLAGS
7059 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7060 HOSTCC=$host_cc
7061 HOSTLD=$host_ld
7062 HOSTCFLAGS=$host_cflags
7063 HOSTCPPFLAGS=$host_cppflags
7064 HOSTEXESUF=$HOSTEXESUF
7065 HOSTLDFLAGS=$host_ldflags
7066 HOSTEXTRALIBS=$host_extralibs
7067 DEPHOSTCC=$host_cc
7068 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7069 HOSTCCDEP=$HOSTCCDEP
7070 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7071 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7072 HOSTCC_C=$HOSTCC_C
7073 HOSTCC_O=$HOSTCC_O
7074 HOSTLD_O=$HOSTLD_O
7075 TARGET_EXEC=$target_exec $target_exec_args
7076 TARGET_PATH=$target_path
7077 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7078 CFLAGS-ffplay=${sdl2_cflags}
7079 CFLAGS_HEADERS=$CFLAGS_HEADERS
7080 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7081 EXTRALIBS=$extralibs
7082 COMPAT_OBJS=$compat_objs
7083 INSTALL=$install
7084 LIBTARGET=${LIBTARGET}
7085 SLIBNAME=${SLIBNAME}
7086 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7087 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7088 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7089 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7090 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7091 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7092 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7093 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7094 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7095 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7096 NOREDZONE_FLAGS=$noredzone_flags
7097 LIBFUZZER_PATH=$libfuzzer_path
7098 IGNORE_TESTS=$ignore_tests
7099 EOF
7100
7101 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7102
7103 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7104     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7105 done
7106
7107 cat > $TMPH <<EOF
7108 /* Automatically generated by configure - do not modify! */
7109 #ifndef FFMPEG_CONFIG_H
7110 #define FFMPEG_CONFIG_H
7111 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7112 #define FFMPEG_LICENSE "$(c_escape $license)"
7113 #define CONFIG_THIS_YEAR 2018
7114 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7115 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7116 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7117 #define av_restrict $restrict_keyword
7118 #define EXTERN_PREFIX "${extern_prefix}"
7119 #define EXTERN_ASM ${extern_prefix}
7120 #define BUILDSUF "$build_suffix"
7121 #define SLIBSUF "$SLIBSUF"
7122 #define HAVE_MMX2 HAVE_MMXEXT
7123 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7124 EOF
7125
7126 test -n "$assert_level" &&
7127     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7128
7129 test -n "$malloc_prefix" &&
7130     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7131
7132 if enabled x86asm; then
7133     append config_files $TMPASM
7134     cat > $TMPASM <<EOF
7135 ; Automatically generated by configure - do not modify!
7136 EOF
7137 fi
7138
7139 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7140
7141
7142 mkdir -p doc
7143 mkdir -p tests
7144 mkdir -p tests/api
7145 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7146
7147 print_config ARCH_   "$config_files" $ARCH_LIST
7148 print_config HAVE_   "$config_files" $HAVE_LIST
7149 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7150                                      $CONFIG_EXTRA      \
7151                                      $ALL_COMPONENTS    \
7152
7153 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7154 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7155
7156 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7157 cp_if_changed $TMPH config.h
7158 touch ffbuild/.config
7159
7160 enabled x86asm && cp_if_changed $TMPASM config.asm
7161
7162 cat > $TMPH <<EOF
7163 /* Generated by ffmpeg configure */
7164 #ifndef AVUTIL_AVCONFIG_H
7165 #define AVUTIL_AVCONFIG_H
7166 EOF
7167
7168 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7169
7170 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7171
7172 cp_if_changed $TMPH libavutil/avconfig.h
7173
7174 full_filter_name(){
7175     sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_$1;/\1_$1/p" $source_path/libavfilter/allfilters.c
7176 }
7177
7178 # generate the lists of enabled components
7179 print_enabled_components(){
7180     file=$1
7181     struct_name=$2
7182     name=$3
7183     shift 3
7184     echo "static const $struct_name * const $name[] = {" > $TMPH
7185     for c in $*; do
7186         if enabled $c; then
7187             case $name in
7188                 filter_list)
7189                     c=$(full_filter_name $(remove_suffix _filter $c))
7190                 ;;
7191                 indev_list)
7192                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7193                 ;;
7194                 outdev_list)
7195                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7196                 ;;
7197             esac
7198             printf "    &ff_%s,\n" $c >> $TMPH
7199         fi
7200     done
7201     if [ "$name" = "filter_list" ]; then
7202         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7203             printf "    &ff_%s,\n" $c >> $TMPH
7204         done
7205     fi
7206     echo "    NULL };" >> $TMPH
7207     cp_if_changed $TMPH $file
7208 }
7209
7210 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7211 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7212 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7213 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7214 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7215 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7216 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7217 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7218 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7219
7220 # Settings for pkg-config files
7221
7222 cat > $TMPH <<EOF
7223 # Automatically generated by configure - do not modify!
7224 shared=$shared
7225 build_suffix=$build_suffix
7226 prefix=$prefix
7227 libdir=$libdir
7228 incdir=$incdir
7229 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7230 source_path=${source_path}
7231 LIBPREF=${LIBPREF}
7232 LIBSUF=${LIBSUF}
7233 extralibs_avutil="$avutil_extralibs"
7234 extralibs_avcodec="$avcodec_extralibs"
7235 extralibs_avformat="$avformat_extralibs"
7236 extralibs_avdevice="$avdevice_extralibs"
7237 extralibs_avfilter="$avfilter_extralibs"
7238 extralibs_avresample="$avresample_extralibs"
7239 extralibs_postproc="$postproc_extralibs"
7240 extralibs_swscale="$swscale_extralibs"
7241 extralibs_swresample="$swresample_extralibs"
7242 EOF
7243
7244 for lib in $LIBRARY_LIST; do
7245     lib_deps="$(eval echo \$${lib}_deps)"
7246     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7247 done
7248
7249 cp_if_changed $TMPH ffbuild/config.sh