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