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     dirac_parse
2240     dvprofile
2241     exif
2242     faandct
2243     faanidct
2244     fdctdsp
2245     flacdsp
2246     fmtconvert
2247     frame_thread_encoder
2248     g722dsp
2249     golomb
2250     gplv3
2251     h263dsp
2252     h264chroma
2253     h264dsp
2254     h264parse
2255     h264pred
2256     h264qpel
2257     hevcparse
2258     hpeldsp
2259     huffman
2260     huffyuvdsp
2261     huffyuvencdsp
2262     idctdsp
2263     iirfilter
2264     mdct15
2265     intrax8
2266     iso_media
2267     ividsp
2268     jpegtables
2269     lgplv3
2270     libx262
2271     llauddsp
2272     llviddsp
2273     llvidencdsp
2274     lpc
2275     lzf
2276     me_cmp
2277     mpeg_er
2278     mpegaudio
2279     mpegaudiodsp
2280     mpegaudioheader
2281     mpegvideo
2282     mpegvideoenc
2283     mss34dsp
2284     pixblockdsp
2285     qpeldsp
2286     qsv
2287     qsvdec
2288     qsvenc
2289     qsvvpp
2290     rangecoder
2291     riffdec
2292     riffenc
2293     rtpdec
2294     rtpenc_chain
2295     rv34dsp
2296     sinewin
2297     snappy
2298     srtp
2299     startcode
2300     texturedsp
2301     texturedspenc
2302     tpeldsp
2303     vaapi_1
2304     vaapi_encode
2305     vc1dsp
2306     videodsp
2307     vp3dsp
2308     vp56dsp
2309     vp8dsp
2310     wma_freqs
2311     wmv2dsp
2312 "
2313
2314 CMDLINE_SELECT="
2315     $ARCH_EXT_LIST
2316     $CONFIG_LIST
2317     $HAVE_LIST_CMDLINE
2318     $THREADS_LIST
2319     asm
2320     cross_compile
2321     debug
2322     extra_warnings
2323     logging
2324     lto
2325     optimizations
2326     rpath
2327     stripping
2328 "
2329
2330 PATHS_LIST="
2331     bindir
2332     datadir
2333     docdir
2334     incdir
2335     libdir
2336     mandir
2337     pkgconfigdir
2338     prefix
2339     shlibdir
2340     install_name_dir
2341 "
2342
2343 CMDLINE_SET="
2344     $PATHS_LIST
2345     ar
2346     arch
2347     as
2348     assert_level
2349     build_suffix
2350     cc
2351     objcc
2352     cpu
2353     cross_prefix
2354     custom_allocator
2355     cxx
2356     dep_cc
2357     doxygen
2358     env
2359     extra_version
2360     gas
2361     host_cc
2362     host_cflags
2363     host_extralibs
2364     host_ld
2365     host_ldflags
2366     host_os
2367     ignore_tests
2368     install
2369     ld
2370     ln_s
2371     logfile
2372     malloc_prefix
2373     nm
2374     optflags
2375     nvccflags
2376     pkg_config
2377     pkg_config_flags
2378     progs_suffix
2379     random_seed
2380     ranlib
2381     samples
2382     strip
2383     sws_max_filter_size
2384     sysinclude
2385     sysroot
2386     target_exec
2387     target_os
2388     target_path
2389     target_samples
2390     tempprefix
2391     toolchain
2392     valgrind
2393     x86asmexe
2394 "
2395
2396 CMDLINE_APPEND="
2397     extra_cflags
2398     extra_cxxflags
2399     extra_objcflags
2400     host_cppflags
2401 "
2402
2403 # code dependency declarations
2404
2405 # architecture extensions
2406
2407 armv5te_deps="arm"
2408 armv6_deps="arm"
2409 armv6t2_deps="arm"
2410 armv8_deps="aarch64"
2411 neon_deps_any="aarch64 arm"
2412 intrinsics_neon_deps="neon"
2413 vfp_deps_any="aarch64 arm"
2414 vfpv3_deps="vfp"
2415 setend_deps="arm"
2416
2417 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2418
2419 altivec_deps="ppc"
2420 dcbzl_deps="ppc"
2421 ldbrx_deps="ppc"
2422 ppc4xx_deps="ppc"
2423 vsx_deps="altivec"
2424 power8_deps="vsx"
2425
2426 loongson2_deps="mips"
2427 loongson3_deps="mips"
2428 mips32r2_deps="mips"
2429 mips32r5_deps="mips"
2430 mips32r6_deps="mips"
2431 mips64r2_deps="mips"
2432 mips64r6_deps="mips"
2433 mipsfpu_deps="mips"
2434 mipsdsp_deps="mips"
2435 mipsdspr2_deps="mips"
2436 mmi_deps="mips"
2437 msa_deps="mipsfpu"
2438
2439 cpunop_deps="i686"
2440 x86_64_select="i686"
2441 x86_64_suggest="fast_cmov"
2442
2443 amd3dnow_deps="mmx"
2444 amd3dnowext_deps="amd3dnow"
2445 i686_deps="x86"
2446 mmx_deps="x86"
2447 mmxext_deps="mmx"
2448 sse_deps="mmxext"
2449 sse2_deps="sse"
2450 sse3_deps="sse2"
2451 ssse3_deps="sse3"
2452 sse4_deps="ssse3"
2453 sse42_deps="sse4"
2454 aesni_deps="sse42"
2455 avx_deps="sse42"
2456 xop_deps="avx"
2457 fma3_deps="avx"
2458 fma4_deps="avx"
2459 avx2_deps="avx"
2460 avx512_deps="avx2"
2461
2462 mmx_external_deps="x86asm"
2463 mmx_inline_deps="inline_asm x86"
2464 mmx_suggest="mmx_external mmx_inline"
2465
2466 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2467     eval dep=\$${ext}_deps
2468     eval ${ext}_external_deps='"${dep}_external"'
2469     eval ${ext}_inline_deps='"${dep}_inline"'
2470     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2471 done
2472
2473 aligned_stack_if_any="aarch64 ppc x86"
2474 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2475 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2476 fast_unaligned_if_any="aarch64 ppc x86"
2477 simd_align_16_if_any="altivec neon sse"
2478 simd_align_32_if_any="avx"
2479 simd_align_64_if_any="avx512"
2480
2481 # system capabilities
2482 linux_perf_deps="linux_perf_event_h"
2483 symver_if_any="symver_asm_label symver_gnu_asm"
2484 valgrind_backtrace_conflict="optimizations"
2485 valgrind_backtrace_deps="valgrind_valgrind_h"
2486
2487 # threading support
2488 atomics_gcc_if="sync_val_compare_and_swap"
2489 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2490 atomics_win32_if="MemoryBarrier"
2491 atomics_native_if_any="$ATOMICS_LIST"
2492 w32threads_deps="atomics_native"
2493 threads_if_any="$THREADS_LIST"
2494
2495 # subsystems
2496 cbs_h264_select="cbs golomb"
2497 cbs_h265_select="cbs golomb"
2498 cbs_mpeg2_select="cbs"
2499 dct_select="rdft"
2500 dirac_parse_select="golomb"
2501 error_resilience_select="me_cmp"
2502 faandct_deps="faan"
2503 faandct_select="fdctdsp"
2504 faanidct_deps="faan"
2505 faanidct_select="idctdsp"
2506 h264dsp_select="startcode"
2507 hevcparse_select="golomb"
2508 frame_thread_encoder_deps="encoders threads"
2509 intrax8_select="blockdsp idctdsp"
2510 mdct_select="fft"
2511 mdct15_select="fft"
2512 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2513 mpeg_er_select="error_resilience"
2514 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2515 mpegaudiodsp_select="dct"
2516 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2517 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2518 vc1dsp_select="h264chroma qpeldsp startcode"
2519 rdft_select="fft"
2520
2521 # decoders / encoders
2522 aac_decoder_select="adts_header mdct15 mdct sinewin"
2523 aac_fixed_decoder_select="adts_header mdct sinewin"
2524 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2525 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2526 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2527 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2528 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2529 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2530 adpcm_g722_decoder_select="g722dsp"
2531 adpcm_g722_encoder_select="g722dsp"
2532 aic_decoder_select="golomb idctdsp"
2533 alac_encoder_select="lpc"
2534 als_decoder_select="bswapdsp"
2535 amrnb_decoder_select="lsp"
2536 amrwb_decoder_select="lsp"
2537 amv_decoder_select="sp5x_decoder exif"
2538 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2539 ape_decoder_select="bswapdsp llauddsp"
2540 apng_decoder_deps="zlib"
2541 apng_encoder_deps="zlib"
2542 apng_encoder_select="llvidencdsp"
2543 aptx_decoder_select="audio_frame_queue"
2544 aptx_encoder_select="audio_frame_queue"
2545 aptx_hd_decoder_select="audio_frame_queue"
2546 aptx_hd_encoder_select="audio_frame_queue"
2547 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2548 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2549 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2550 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2551 atrac1_decoder_select="mdct sinewin"
2552 atrac3_decoder_select="mdct"
2553 atrac3p_decoder_select="mdct sinewin"
2554 avrn_decoder_select="exif jpegtables"
2555 bink_decoder_select="blockdsp hpeldsp"
2556 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2557 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2558 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2559 clearvideo_decoder_select="idctdsp"
2560 cllc_decoder_select="bswapdsp"
2561 comfortnoise_encoder_select="lpc"
2562 cook_decoder_select="audiodsp mdct sinewin"
2563 cscd_decoder_select="lzo"
2564 cscd_decoder_suggest="zlib"
2565 dca_decoder_select="mdct"
2566 dds_decoder_select="texturedsp"
2567 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2568 dnxhd_decoder_select="blockdsp idctdsp"
2569 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2570 dolby_e_decoder_select="mdct"
2571 dvvideo_decoder_select="dvprofile idctdsp"
2572 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2573 dxa_decoder_deps="zlib"
2574 dxv_decoder_select="lzf texturedsp"
2575 eac3_decoder_select="ac3_decoder"
2576 eac3_encoder_select="ac3_encoder"
2577 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2578 eatgq_decoder_select="aandcttables"
2579 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2580 exr_decoder_deps="zlib"
2581 ffv1_decoder_select="rangecoder"
2582 ffv1_encoder_select="rangecoder"
2583 ffvhuff_decoder_select="huffyuv_decoder"
2584 ffvhuff_encoder_select="huffyuv_encoder"
2585 fic_decoder_select="golomb"
2586 flac_decoder_select="flacdsp"
2587 flac_encoder_select="bswapdsp flacdsp lpc"
2588 flashsv2_decoder_deps="zlib"
2589 flashsv2_encoder_deps="zlib"
2590 flashsv_decoder_deps="zlib"
2591 flashsv_encoder_deps="zlib"
2592 flv_decoder_select="h263_decoder"
2593 flv_encoder_select="h263_encoder"
2594 fourxm_decoder_select="blockdsp bswapdsp"
2595 fraps_decoder_select="bswapdsp huffman"
2596 g2m_decoder_deps="zlib"
2597 g2m_decoder_select="blockdsp idctdsp jpegtables"
2598 g729_decoder_select="audiodsp"
2599 h261_decoder_select="mpegvideo"
2600 h261_encoder_select="aandcttables mpegvideoenc"
2601 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2602 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2603 h263i_decoder_select="h263_decoder"
2604 h263p_decoder_select="h263_decoder"
2605 h263p_encoder_select="h263_encoder"
2606 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2607 h264_decoder_suggest="error_resilience"
2608 hap_decoder_select="snappy texturedsp"
2609 hap_encoder_deps="libsnappy"
2610 hap_encoder_select="texturedspenc"
2611 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2612 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2613 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2614 iac_decoder_select="imc_decoder"
2615 imc_decoder_select="bswapdsp fft mdct sinewin"
2616 indeo3_decoder_select="hpeldsp"
2617 indeo4_decoder_select="ividsp"
2618 indeo5_decoder_select="ividsp"
2619 interplay_video_decoder_select="hpeldsp"
2620 jpegls_decoder_select="mjpeg_decoder"
2621 jv_decoder_select="blockdsp"
2622 lagarith_decoder_select="llviddsp"
2623 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2624 magicyuv_decoder_select="llviddsp"
2625 magicyuv_encoder_select="llvidencdsp"
2626 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2627 metasound_decoder_select="lsp mdct sinewin"
2628 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2629 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2630 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2631 mjpegb_decoder_select="mjpeg_decoder"
2632 mlp_decoder_select="mlp_parser"
2633 mlp_encoder_select="lpc"
2634 motionpixels_decoder_select="bswapdsp"
2635 mp1_decoder_select="mpegaudio"
2636 mp1float_decoder_select="mpegaudio"
2637 mp2_decoder_select="mpegaudio"
2638 mp2float_decoder_select="mpegaudio"
2639 mp3_decoder_select="mpegaudio"
2640 mp3adu_decoder_select="mpegaudio"
2641 mp3adufloat_decoder_select="mpegaudio"
2642 mp3float_decoder_select="mpegaudio"
2643 mp3on4_decoder_select="mpegaudio"
2644 mp3on4float_decoder_select="mpegaudio"
2645 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2646 mpc8_decoder_select="mpegaudiodsp"
2647 mpegvideo_decoder_select="mpegvideo"
2648 mpeg1video_decoder_select="mpegvideo"
2649 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2650 mpeg2video_decoder_select="mpegvideo"
2651 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2652 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2653 mpeg4_encoder_select="h263_encoder"
2654 msa1_decoder_select="mss34dsp"
2655 mscc_decoder_deps="zlib"
2656 msmpeg4v1_decoder_select="h263_decoder"
2657 msmpeg4v2_decoder_select="h263_decoder"
2658 msmpeg4v2_encoder_select="h263_encoder"
2659 msmpeg4v3_decoder_select="h263_decoder"
2660 msmpeg4v3_encoder_select="h263_encoder"
2661 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2662 mts2_decoder_select="mss34dsp"
2663 mxpeg_decoder_select="mjpeg_decoder"
2664 nellymoser_decoder_select="mdct sinewin"
2665 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2666 nuv_decoder_select="idctdsp lzo"
2667 on2avc_decoder_select="mdct"
2668 opus_decoder_deps="swresample"
2669 opus_decoder_select="mdct15"
2670 opus_encoder_select="audio_frame_queue mdct15"
2671 png_decoder_deps="zlib"
2672 png_encoder_deps="zlib"
2673 png_encoder_select="llvidencdsp"
2674 prores_decoder_select="blockdsp idctdsp"
2675 prores_encoder_select="fdctdsp"
2676 qcelp_decoder_select="lsp"
2677 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2678 ra_144_decoder_select="audiodsp"
2679 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2680 ralf_decoder_select="golomb"
2681 rawvideo_decoder_select="bswapdsp"
2682 rscc_decoder_deps="zlib"
2683 rtjpeg_decoder_select="me_cmp"
2684 rv10_decoder_select="h263_decoder"
2685 rv10_encoder_select="h263_encoder"
2686 rv20_decoder_select="h263_decoder"
2687 rv20_encoder_select="h263_encoder"
2688 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2689 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2690 screenpresso_decoder_deps="zlib"
2691 shorten_decoder_select="bswapdsp"
2692 sipr_decoder_select="lsp"
2693 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2694 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2695 sonic_decoder_select="golomb rangecoder"
2696 sonic_encoder_select="golomb rangecoder"
2697 sonic_ls_encoder_select="golomb rangecoder"
2698 sp5x_decoder_select="mjpeg_decoder"
2699 srgc_decoder_deps="zlib"
2700 svq1_decoder_select="hpeldsp"
2701 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2702 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2703 svq3_decoder_suggest="zlib"
2704 tak_decoder_select="audiodsp"
2705 tdsc_decoder_deps="zlib"
2706 tdsc_decoder_select="mjpeg_decoder"
2707 theora_decoder_select="vp3_decoder"
2708 thp_decoder_select="mjpeg_decoder"
2709 tiff_decoder_suggest="zlib lzma"
2710 tiff_encoder_suggest="zlib"
2711 truehd_decoder_select="mlp_parser"
2712 truehd_encoder_select="lpc"
2713 truemotion2_decoder_select="bswapdsp"
2714 truespeech_decoder_select="bswapdsp"
2715 tscc_decoder_deps="zlib"
2716 twinvq_decoder_select="mdct lsp sinewin"
2717 txd_decoder_select="texturedsp"
2718 utvideo_decoder_select="bswapdsp llviddsp"
2719 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2720 vble_decoder_select="llviddsp"
2721 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2722 vc1image_decoder_select="vc1_decoder"
2723 vorbis_decoder_select="mdct"
2724 vorbis_encoder_select="audio_frame_queue mdct"
2725 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2726 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2727 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2728 vp6a_decoder_select="vp6_decoder"
2729 vp6f_decoder_select="vp6_decoder"
2730 vp7_decoder_select="h264pred videodsp vp8dsp"
2731 vp8_decoder_select="h264pred videodsp vp8dsp"
2732 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2733 webp_decoder_select="vp8_decoder exif"
2734 wmalossless_decoder_select="llauddsp"
2735 wmapro_decoder_select="mdct sinewin wma_freqs"
2736 wmav1_decoder_select="mdct sinewin wma_freqs"
2737 wmav1_encoder_select="mdct sinewin wma_freqs"
2738 wmav2_decoder_select="mdct sinewin wma_freqs"
2739 wmav2_encoder_select="mdct sinewin wma_freqs"
2740 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2741 wmv1_decoder_select="h263_decoder"
2742 wmv1_encoder_select="h263_encoder"
2743 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2744 wmv2_encoder_select="h263_encoder wmv2dsp"
2745 wmv3_decoder_select="vc1_decoder"
2746 wmv3image_decoder_select="wmv3_decoder"
2747 xma1_decoder_select="wmapro_decoder"
2748 xma2_decoder_select="wmapro_decoder"
2749 zerocodec_decoder_deps="zlib"
2750 zlib_decoder_deps="zlib"
2751 zlib_encoder_deps="zlib"
2752 zmbv_decoder_deps="zlib"
2753 zmbv_encoder_deps="zlib"
2754
2755 # hardware accelerators
2756 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2757 cuda_deps="ffnvcodec"
2758 cuvid_deps="ffnvcodec"
2759 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2760 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2761 ffnvcodec_deps_any="libdl LoadLibrary"
2762 nvdec_deps="ffnvcodec"
2763 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2764 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2765 xvmc_deps="X11_extensions_XvMClib_h"
2766
2767 h263_vaapi_hwaccel_deps="vaapi"
2768 h263_vaapi_hwaccel_select="h263_decoder"
2769 h263_videotoolbox_hwaccel_deps="videotoolbox"
2770 h263_videotoolbox_hwaccel_select="h263_decoder"
2771 h264_d3d11va_hwaccel_deps="d3d11va"
2772 h264_d3d11va_hwaccel_select="h264_decoder"
2773 h264_d3d11va2_hwaccel_deps="d3d11va"
2774 h264_d3d11va2_hwaccel_select="h264_decoder"
2775 h264_dxva2_hwaccel_deps="dxva2"
2776 h264_dxva2_hwaccel_select="h264_decoder"
2777 h264_nvdec_hwaccel_deps="nvdec"
2778 h264_nvdec_hwaccel_select="h264_decoder"
2779 h264_vaapi_hwaccel_deps="vaapi"
2780 h264_vaapi_hwaccel_select="h264_decoder"
2781 h264_vdpau_hwaccel_deps="vdpau"
2782 h264_vdpau_hwaccel_select="h264_decoder"
2783 h264_videotoolbox_hwaccel_deps="videotoolbox"
2784 h264_videotoolbox_hwaccel_select="h264_decoder"
2785 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2786 hevc_d3d11va_hwaccel_select="hevc_decoder"
2787 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2788 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2789 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2790 hevc_dxva2_hwaccel_select="hevc_decoder"
2791 hevc_nvdec_hwaccel_deps="nvdec"
2792 hevc_nvdec_hwaccel_select="hevc_decoder"
2793 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2794 hevc_vaapi_hwaccel_select="hevc_decoder"
2795 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2796 hevc_vdpau_hwaccel_select="hevc_decoder"
2797 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2798 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2799 mjpeg_nvdec_hwaccel_deps="nvdec"
2800 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2801 mjpeg_vaapi_hwaccel_deps="vaapi"
2802 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2803 mpeg_xvmc_hwaccel_deps="xvmc"
2804 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2805 mpeg1_nvdec_hwaccel_deps="nvdec"
2806 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2807 mpeg1_vdpau_hwaccel_deps="vdpau"
2808 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2809 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2810 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2811 mpeg1_xvmc_hwaccel_deps="xvmc"
2812 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2813 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2814 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2815 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2816 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2817 mpeg2_dxva2_hwaccel_deps="dxva2"
2818 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2819 mpeg2_nvdec_hwaccel_deps="nvdec"
2820 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2821 mpeg2_vaapi_hwaccel_deps="vaapi"
2822 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2823 mpeg2_vdpau_hwaccel_deps="vdpau"
2824 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2825 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2826 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2827 mpeg2_xvmc_hwaccel_deps="xvmc"
2828 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2829 mpeg4_nvdec_hwaccel_deps="nvdec"
2830 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2831 mpeg4_vaapi_hwaccel_deps="vaapi"
2832 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2833 mpeg4_vdpau_hwaccel_deps="vdpau"
2834 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2835 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2836 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2837 vc1_d3d11va_hwaccel_deps="d3d11va"
2838 vc1_d3d11va_hwaccel_select="vc1_decoder"
2839 vc1_d3d11va2_hwaccel_deps="d3d11va"
2840 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2841 vc1_dxva2_hwaccel_deps="dxva2"
2842 vc1_dxva2_hwaccel_select="vc1_decoder"
2843 vc1_nvdec_hwaccel_deps="nvdec"
2844 vc1_nvdec_hwaccel_select="vc1_decoder"
2845 vc1_vaapi_hwaccel_deps="vaapi"
2846 vc1_vaapi_hwaccel_select="vc1_decoder"
2847 vc1_vdpau_hwaccel_deps="vdpau"
2848 vc1_vdpau_hwaccel_select="vc1_decoder"
2849 vp8_nvdec_hwaccel_deps="nvdec"
2850 vp8_nvdec_hwaccel_select="vp8_decoder"
2851 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2852 vp8_vaapi_hwaccel_select="vp8_decoder"
2853 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2854 vp9_d3d11va_hwaccel_select="vp9_decoder"
2855 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2856 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2857 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2858 vp9_dxva2_hwaccel_select="vp9_decoder"
2859 vp9_nvdec_hwaccel_deps="nvdec"
2860 vp9_nvdec_hwaccel_select="vp9_decoder"
2861 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2862 vp9_vaapi_hwaccel_select="vp9_decoder"
2863 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2864 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2865 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2866 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2867 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2868 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2869
2870 # hardware-accelerated codecs
2871 omx_deps="libdl pthreads"
2872 omx_rpi_select="omx"
2873 qsv_deps="libmfx"
2874 qsvdec_select="qsv"
2875 qsvenc_select="qsv"
2876 qsvvpp_select="qsv"
2877 vaapi_encode_deps="vaapi"
2878 v4l2_m2m_deps_any="linux_videodev2_h"
2879
2880 hwupload_cuda_filter_deps="ffnvcodec"
2881 scale_npp_filter_deps="ffnvcodec libnpp"
2882 scale_cuda_filter_deps="cuda_sdk"
2883 thumbnail_cuda_filter_deps="cuda_sdk"
2884
2885 amf_deps_any="libdl LoadLibrary"
2886 nvenc_deps="ffnvcodec"
2887 nvenc_deps_any="libdl LoadLibrary"
2888 nvenc_encoder_deps="nvenc"
2889
2890 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2891 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2892 h264_amf_encoder_deps="amf"
2893 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2894 h264_cuvid_decoder_deps="cuvid"
2895 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2896 h264_mediacodec_decoder_deps="mediacodec"
2897 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2898 h264_mmal_decoder_deps="mmal"
2899 h264_nvenc_encoder_deps="nvenc"
2900 h264_omx_encoder_deps="omx"
2901 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2902 h264_qsv_encoder_select="qsvenc"
2903 h264_rkmpp_decoder_deps="rkmpp"
2904 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2905 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2906 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2907 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2908 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2909 hevc_amf_encoder_deps="amf"
2910 hevc_cuvid_decoder_deps="cuvid"
2911 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2912 hevc_mediacodec_decoder_deps="mediacodec"
2913 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2914 hevc_nvenc_encoder_deps="nvenc"
2915 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2916 hevc_qsv_encoder_select="hevcparse qsvenc"
2917 hevc_rkmpp_decoder_deps="rkmpp"
2918 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2919 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2920 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2921 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2922 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2923 mjpeg_cuvid_decoder_deps="cuvid"
2924 mjpeg_qsv_encoder_deps="libmfx"
2925 mjpeg_qsv_encoder_select="qsvenc"
2926 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2927 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2928 mpeg1_cuvid_decoder_deps="cuvid"
2929 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2930 mpeg2_crystalhd_decoder_select="crystalhd"
2931 mpeg2_cuvid_decoder_deps="cuvid"
2932 mpeg2_mmal_decoder_deps="mmal"
2933 mpeg2_mediacodec_decoder_deps="mediacodec"
2934 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2935 mpeg2_qsv_encoder_select="qsvenc"
2936 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2937 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2938 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2939 mpeg4_crystalhd_decoder_select="crystalhd"
2940 mpeg4_cuvid_decoder_deps="cuvid"
2941 mpeg4_mediacodec_decoder_deps="mediacodec"
2942 mpeg4_mmal_decoder_deps="mmal"
2943 mpeg4_omx_encoder_deps="omx"
2944 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2945 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2946 msmpeg4_crystalhd_decoder_select="crystalhd"
2947 nvenc_h264_encoder_select="h264_nvenc_encoder"
2948 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2949 vc1_crystalhd_decoder_select="crystalhd"
2950 vc1_cuvid_decoder_deps="cuvid"
2951 vc1_mmal_decoder_deps="mmal"
2952 vc1_qsv_decoder_select="qsvdec vc1_parser"
2953 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2954 vp8_cuvid_decoder_deps="cuvid"
2955 vp8_mediacodec_decoder_deps="mediacodec"
2956 vp8_qsv_decoder_select="qsvdec vp8_parser"
2957 vp8_rkmpp_decoder_deps="rkmpp"
2958 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2959 vp8_vaapi_encoder_select="vaapi_encode"
2960 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2961 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2962 vp9_cuvid_decoder_deps="cuvid"
2963 vp9_mediacodec_decoder_deps="mediacodec"
2964 vp9_rkmpp_decoder_deps="rkmpp"
2965 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2966 vp9_vaapi_encoder_select="vaapi_encode"
2967 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2968 wmv3_crystalhd_decoder_select="crystalhd"
2969
2970 # parsers
2971 aac_parser_select="adts_header"
2972 h264_parser_select="golomb h264dsp h264parse"
2973 hevc_parser_select="hevcparse"
2974 mpegaudio_parser_select="mpegaudioheader"
2975 mpegvideo_parser_select="mpegvideo"
2976 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2977 vc1_parser_select="vc1dsp"
2978
2979 # bitstream_filters
2980 aac_adtstoasc_bsf_select="adts_header"
2981 filter_units_bsf_select="cbs"
2982 h264_metadata_bsf_deps="const_nan"
2983 h264_metadata_bsf_select="cbs_h264"
2984 h264_redundant_pps_bsf_select="cbs_h264"
2985 hevc_metadata_bsf_select="cbs_h265"
2986 mjpeg2jpeg_bsf_select="jpegtables"
2987 mpeg2_metadata_bsf_select="cbs_mpeg2"
2988 trace_headers_bsf_select="cbs"
2989
2990 # external libraries
2991 aac_at_decoder_deps="audiotoolbox"
2992 aac_at_decoder_select="aac_adtstoasc_bsf"
2993 ac3_at_decoder_deps="audiotoolbox"
2994 ac3_at_decoder_select="ac3_parser"
2995 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2996 alac_at_decoder_deps="audiotoolbox"
2997 amr_nb_at_decoder_deps="audiotoolbox"
2998 avisynth_deps_any="libdl LoadLibrary"
2999 avisynth_demuxer_deps="avisynth"
3000 avisynth_demuxer_select="riffdec"
3001 eac3_at_decoder_deps="audiotoolbox"
3002 eac3_at_decoder_select="ac3_parser"
3003 gsm_ms_at_decoder_deps="audiotoolbox"
3004 ilbc_at_decoder_deps="audiotoolbox"
3005 mp1_at_decoder_deps="audiotoolbox"
3006 mp2_at_decoder_deps="audiotoolbox"
3007 mp3_at_decoder_deps="audiotoolbox"
3008 mp1_at_decoder_select="mpegaudioheader"
3009 mp2_at_decoder_select="mpegaudioheader"
3010 mp3_at_decoder_select="mpegaudioheader"
3011 pcm_alaw_at_decoder_deps="audiotoolbox"
3012 pcm_mulaw_at_decoder_deps="audiotoolbox"
3013 qdmc_at_decoder_deps="audiotoolbox"
3014 qdm2_at_decoder_deps="audiotoolbox"
3015 aac_at_encoder_deps="audiotoolbox"
3016 aac_at_encoder_select="audio_frame_queue"
3017 alac_at_encoder_deps="audiotoolbox"
3018 alac_at_encoder_select="audio_frame_queue"
3019 ilbc_at_encoder_deps="audiotoolbox"
3020 ilbc_at_encoder_select="audio_frame_queue"
3021 pcm_alaw_at_encoder_deps="audiotoolbox"
3022 pcm_alaw_at_encoder_select="audio_frame_queue"
3023 pcm_mulaw_at_encoder_deps="audiotoolbox"
3024 pcm_mulaw_at_encoder_select="audio_frame_queue"
3025 chromaprint_muxer_deps="chromaprint"
3026 h264_videotoolbox_encoder_deps="pthreads"
3027 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3028 hevc_videotoolbox_encoder_deps="pthreads"
3029 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3030 libaom_av1_decoder_deps="libaom"
3031 libaom_av1_encoder_deps="libaom"
3032 libcelt_decoder_deps="libcelt"
3033 libcodec2_decoder_deps="libcodec2"
3034 libcodec2_encoder_deps="libcodec2"
3035 libfdk_aac_decoder_deps="libfdk_aac"
3036 libfdk_aac_encoder_deps="libfdk_aac"
3037 libfdk_aac_encoder_select="audio_frame_queue"
3038 libgme_demuxer_deps="libgme"
3039 libgsm_decoder_deps="libgsm"
3040 libgsm_encoder_deps="libgsm"
3041 libgsm_ms_decoder_deps="libgsm"
3042 libgsm_ms_encoder_deps="libgsm"
3043 libilbc_decoder_deps="libilbc"
3044 libilbc_encoder_deps="libilbc"
3045 libkvazaar_encoder_deps="libkvazaar"
3046 libmodplug_demuxer_deps="libmodplug"
3047 libmp3lame_encoder_deps="libmp3lame"
3048 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3049 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3050 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3051 libopencore_amrnb_encoder_select="audio_frame_queue"
3052 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3053 libopenh264_decoder_deps="libopenh264"
3054 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3055 libopenh264_encoder_deps="libopenh264"
3056 libopenjpeg_decoder_deps="libopenjpeg"
3057 libopenjpeg_encoder_deps="libopenjpeg"
3058 libopenmpt_demuxer_deps="libopenmpt"
3059 libopus_decoder_deps="libopus"
3060 libopus_encoder_deps="libopus"
3061 libopus_encoder_select="audio_frame_queue"
3062 librsvg_decoder_deps="librsvg"
3063 libshine_encoder_deps="libshine"
3064 libshine_encoder_select="audio_frame_queue"
3065 libspeex_decoder_deps="libspeex"
3066 libspeex_encoder_deps="libspeex"
3067 libspeex_encoder_select="audio_frame_queue"
3068 libtheora_encoder_deps="libtheora"
3069 libtwolame_encoder_deps="libtwolame"
3070 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3071 libvorbis_decoder_deps="libvorbis"
3072 libvorbis_encoder_deps="libvorbis libvorbisenc"
3073 libvorbis_encoder_select="audio_frame_queue"
3074 libvpx_vp8_decoder_deps="libvpx"
3075 libvpx_vp8_encoder_deps="libvpx"
3076 libvpx_vp9_decoder_deps="libvpx"
3077 libvpx_vp9_encoder_deps="libvpx"
3078 libwavpack_encoder_deps="libwavpack"
3079 libwavpack_encoder_select="audio_frame_queue"
3080 libwebp_encoder_deps="libwebp"
3081 libwebp_anim_encoder_deps="libwebp"
3082 libx262_encoder_deps="libx262"
3083 libx264_encoder_deps="libx264"
3084 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3085 libx264rgb_encoder_select="libx264_encoder"
3086 libx265_encoder_deps="libx265"
3087 libxavs_encoder_deps="libxavs"
3088 libxvid_encoder_deps="libxvid"
3089 libzvbi_teletext_decoder_deps="libzvbi"
3090 videotoolbox_suggest="coreservices"
3091 videotoolbox_deps="corefoundation coremedia corevideo"
3092 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3093
3094 # demuxers / muxers
3095 ac3_demuxer_select="ac3_parser"
3096 aiff_muxer_select="iso_media"
3097 asf_demuxer_select="riffdec"
3098 asf_o_demuxer_select="riffdec"
3099 asf_muxer_select="riffenc"
3100 asf_stream_muxer_select="asf_muxer"
3101 avi_demuxer_select="iso_media riffdec exif"
3102 avi_muxer_select="riffenc"
3103 caf_demuxer_select="iso_media riffdec"
3104 caf_muxer_select="iso_media"
3105 dash_muxer_select="mp4_muxer"
3106 dash_demuxer_deps="libxml2"
3107 dirac_demuxer_select="dirac_parser"
3108 dts_demuxer_select="dca_parser"
3109 dtshd_demuxer_select="dca_parser"
3110 dv_demuxer_select="dvprofile"
3111 dv_muxer_select="dvprofile"
3112 dxa_demuxer_select="riffdec"
3113 eac3_demuxer_select="ac3_parser"
3114 f4v_muxer_select="mov_muxer"
3115 fifo_muxer_deps="threads"
3116 flac_demuxer_select="flac_parser"
3117 hds_muxer_select="flv_muxer"
3118 hls_muxer_select="mpegts_muxer"
3119 hls_muxer_suggest="gcrypt openssl"
3120 image2_alias_pix_demuxer_select="image2_demuxer"
3121 image2_brender_pix_demuxer_select="image2_demuxer"
3122 ipod_muxer_select="mov_muxer"
3123 ismv_muxer_select="mov_muxer"
3124 matroska_audio_muxer_select="matroska_muxer"
3125 matroska_demuxer_select="iso_media riffdec"
3126 matroska_demuxer_suggest="bzlib lzo zlib"
3127 matroska_muxer_select="iso_media riffenc"
3128 mmf_muxer_select="riffenc"
3129 mov_demuxer_select="iso_media riffdec"
3130 mov_demuxer_suggest="zlib"
3131 mov_muxer_select="iso_media riffenc rtpenc_chain"
3132 mp3_demuxer_select="mpegaudio_parser"
3133 mp3_muxer_select="mpegaudioheader"
3134 mp4_muxer_select="mov_muxer"
3135 mpegts_demuxer_select="iso_media"
3136 mpegts_muxer_select="adts_muxer latm_muxer"
3137 mpegtsraw_demuxer_select="mpegts_demuxer"
3138 mxf_d10_muxer_select="mxf_muxer"
3139 mxf_opatom_muxer_select="mxf_muxer"
3140 nut_muxer_select="riffenc"
3141 nuv_demuxer_select="riffdec"
3142 oga_muxer_select="ogg_muxer"
3143 ogg_demuxer_select="dirac_parse"
3144 ogv_muxer_select="ogg_muxer"
3145 opus_muxer_select="ogg_muxer"
3146 psp_muxer_select="mov_muxer"
3147 rtp_demuxer_select="sdp_demuxer"
3148 rtp_muxer_select="golomb"
3149 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3150 rtsp_demuxer_select="http_protocol rtpdec"
3151 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3152 sap_demuxer_select="sdp_demuxer"
3153 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3154 sdp_demuxer_select="rtpdec"
3155 smoothstreaming_muxer_select="ismv_muxer"
3156 spdif_demuxer_select="adts_header"
3157 spdif_muxer_select="adts_header"
3158 spx_muxer_select="ogg_muxer"
3159 swf_demuxer_suggest="zlib"
3160 tak_demuxer_select="tak_parser"
3161 tg2_muxer_select="mov_muxer"
3162 tgp_muxer_select="mov_muxer"
3163 vobsub_demuxer_select="mpegps_demuxer"
3164 w64_demuxer_select="wav_demuxer"
3165 w64_muxer_select="wav_muxer"
3166 wav_demuxer_select="riffdec"
3167 wav_muxer_select="riffenc"
3168 webm_muxer_select="iso_media riffenc"
3169 webm_dash_manifest_demuxer_select="matroska_demuxer"
3170 wtv_demuxer_select="mpegts_demuxer riffdec"
3171 wtv_muxer_select="mpegts_muxer riffenc"
3172 xmv_demuxer_select="riffdec"
3173 xwma_demuxer_select="riffdec"
3174
3175 # indevs / outdevs
3176 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3177 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3178 alsa_indev_deps="alsa"
3179 alsa_outdev_deps="alsa"
3180 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3181 avfoundation_indev_suggest="coregraphics applicationservices"
3182 avfoundation_indev_extralibs="-framework Foundation"
3183 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3184 caca_outdev_deps="libcaca"
3185 decklink_deps_any="libdl LoadLibrary"
3186 decklink_indev_deps="decklink threads"
3187 decklink_indev_extralibs="-lstdc++"
3188 decklink_outdev_deps="decklink threads"
3189 decklink_outdev_extralibs="-lstdc++"
3190 libndi_newtek_indev_deps="libndi_newtek"
3191 libndi_newtek_indev_extralibs="-lndi"
3192 libndi_newtek_outdev_deps="libndi_newtek"
3193 libndi_newtek_outdev_extralibs="-lndi"
3194 dshow_indev_deps="IBaseFilter"
3195 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3196 fbdev_indev_deps="linux_fb_h"
3197 fbdev_outdev_deps="linux_fb_h"
3198 gdigrab_indev_deps="CreateDIBSection"
3199 gdigrab_indev_extralibs="-lgdi32"
3200 gdigrab_indev_select="bmp_decoder"
3201 iec61883_indev_deps="libiec61883"
3202 jack_indev_deps="libjack"
3203 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3204 kmsgrab_indev_deps="libdrm"
3205 lavfi_indev_deps="avfilter"
3206 libcdio_indev_deps="libcdio"
3207 libdc1394_indev_deps="libdc1394"
3208 openal_indev_deps="openal"
3209 opengl_outdev_deps="opengl"
3210 oss_indev_deps_any="sys_soundcard_h"
3211 oss_outdev_deps_any="sys_soundcard_h"
3212 pulse_indev_deps="libpulse"
3213 pulse_outdev_deps="libpulse"
3214 sdl2_outdev_deps="sdl2"
3215 sndio_indev_deps="sndio"
3216 sndio_outdev_deps="sndio"
3217 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3218 v4l2_indev_suggest="libv4l2"
3219 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3220 v4l2_outdev_suggest="libv4l2"
3221 vfwcap_indev_deps="vfw32 vfwcap_defines"
3222 xcbgrab_indev_deps="libxcb"
3223 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3224 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3225 xv_outdev_extralibs="-lXv -lX11 -lXext"
3226
3227 # protocols
3228 async_protocol_deps="threads"
3229 bluray_protocol_deps="libbluray"
3230 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3231 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3232 ffrtmpcrypt_protocol_select="tcp_protocol"
3233 ffrtmphttp_protocol_conflict="librtmp_protocol"
3234 ffrtmphttp_protocol_select="http_protocol"
3235 ftp_protocol_select="tcp_protocol"
3236 gopher_protocol_select="network"
3237 http_protocol_select="tcp_protocol"
3238 http_protocol_suggest="zlib"
3239 httpproxy_protocol_select="tcp_protocol"
3240 httpproxy_protocol_suggest="zlib"
3241 https_protocol_select="tls_protocol"
3242 https_protocol_suggest="zlib"
3243 icecast_protocol_select="http_protocol"
3244 librtmp_protocol_deps="librtmp"
3245 librtmpe_protocol_deps="librtmp"
3246 librtmps_protocol_deps="librtmp"
3247 librtmpt_protocol_deps="librtmp"
3248 librtmpte_protocol_deps="librtmp"
3249 libsmbclient_protocol_deps="libsmbclient gplv3"
3250 libssh_protocol_deps="libssh"
3251 libtls_conflict="openssl gnutls"
3252 mmsh_protocol_select="http_protocol"
3253 mmst_protocol_select="network"
3254 libsrt_protocol_deps="libsrt"
3255 libsrt_protocol_select="network"
3256 rtmp_protocol_conflict="librtmp_protocol"
3257 rtmp_protocol_select="tcp_protocol"
3258 rtmp_protocol_suggest="zlib"
3259 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3260 rtmpe_protocol_suggest="zlib"
3261 rtmps_protocol_conflict="librtmp_protocol"
3262 rtmps_protocol_select="tls_protocol"
3263 rtmps_protocol_suggest="zlib"
3264 rtmpt_protocol_select="ffrtmphttp_protocol"
3265 rtmpt_protocol_suggest="zlib"
3266 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3267 rtmpte_protocol_suggest="zlib"
3268 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3269 rtmpts_protocol_suggest="zlib"
3270 rtp_protocol_select="udp_protocol"
3271 schannel_conflict="openssl gnutls libtls"
3272 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3273 sctp_protocol_select="network"
3274 securetransport_conflict="openssl gnutls libtls"
3275 srtp_protocol_select="rtp_protocol srtp"
3276 tcp_protocol_select="network"
3277 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3278 tls_protocol_select="tcp_protocol"
3279 udp_protocol_select="network"
3280 udplite_protocol_select="network"
3281 unix_protocol_deps="sys_un_h"
3282 unix_protocol_select="network"
3283
3284 # filters
3285 afftfilt_filter_deps="avcodec"
3286 afftfilt_filter_select="fft"
3287 afir_filter_deps="avcodec"
3288 afir_filter_select="fft"
3289 amovie_filter_deps="avcodec avformat"
3290 aresample_filter_deps="swresample"
3291 ass_filter_deps="libass"
3292 atempo_filter_deps="avcodec"
3293 atempo_filter_select="rdft"
3294 avgblur_opencl_filter_deps="opencl"
3295 azmq_filter_deps="libzmq"
3296 blackframe_filter_deps="gpl"
3297 boxblur_filter_deps="gpl"
3298 bs2b_filter_deps="libbs2b"
3299 colormatrix_filter_deps="gpl"
3300 convolution_opencl_filter_deps="opencl"
3301 convolve_filter_deps="avcodec"
3302 convolve_filter_select="fft"
3303 coreimage_filter_deps="coreimage appkit"
3304 coreimage_filter_extralibs="-framework OpenGL"
3305 coreimagesrc_filter_deps="coreimage appkit"
3306 coreimagesrc_filter_extralibs="-framework OpenGL"
3307 cover_rect_filter_deps="avcodec avformat gpl"
3308 cropdetect_filter_deps="gpl"
3309 deconvolve_filter_deps="avcodec"
3310 deconvolve_filter_select="fft"
3311 deinterlace_qsv_filter_deps="libmfx"
3312 deinterlace_vaapi_filter_deps="vaapi"
3313 delogo_filter_deps="gpl"
3314 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3315 deshake_filter_select="pixelutils"
3316 drawtext_filter_deps="libfreetype"
3317 drawtext_filter_suggest="libfontconfig libfribidi"
3318 elbg_filter_deps="avcodec"
3319 eq_filter_deps="gpl"
3320 fftfilt_filter_deps="avcodec"
3321 fftfilt_filter_select="rdft"
3322 find_rect_filter_deps="avcodec avformat gpl"
3323 firequalizer_filter_deps="avcodec"
3324 firequalizer_filter_select="rdft"
3325 flite_filter_deps="libflite"
3326 framerate_filter_select="pixelutils"
3327 frei0r_filter_deps="frei0r libdl"
3328 frei0r_src_filter_deps="frei0r libdl"
3329 fspp_filter_deps="gpl"
3330 geq_filter_deps="gpl"
3331 histeq_filter_deps="gpl"
3332 hqdn3d_filter_deps="gpl"
3333 interlace_filter_deps="gpl"
3334 kerndeint_filter_deps="gpl"
3335 ladspa_filter_deps="ladspa libdl"
3336 lv2_filter_deps="lv2"
3337 mcdeint_filter_deps="avcodec gpl"
3338 movie_filter_deps="avcodec avformat"
3339 mpdecimate_filter_deps="gpl"
3340 mpdecimate_filter_select="pixelutils"
3341 mptestsrc_filter_deps="gpl"
3342 negate_filter_deps="lut_filter"
3343 nnedi_filter_deps="gpl"
3344 ocr_filter_deps="libtesseract"
3345 ocv_filter_deps="libopencv"
3346 openclsrc_filter_deps="opencl"
3347 overlay_opencl_filter_deps="opencl"
3348 overlay_qsv_filter_deps="libmfx"
3349 overlay_qsv_filter_select="qsvvpp"
3350 owdenoise_filter_deps="gpl"
3351 pan_filter_deps="swresample"
3352 perspective_filter_deps="gpl"
3353 phase_filter_deps="gpl"
3354 pp7_filter_deps="gpl"
3355 pp_filter_deps="gpl postproc"
3356 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3357 program_opencl_filter_deps="opencl"
3358 pullup_filter_deps="gpl"
3359 removelogo_filter_deps="avcodec avformat swscale"
3360 repeatfields_filter_deps="gpl"
3361 resample_filter_deps="avresample"
3362 rubberband_filter_deps="librubberband"
3363 sab_filter_deps="gpl swscale"
3364 scale2ref_filter_deps="swscale"
3365 scale_filter_deps="swscale"
3366 scale_qsv_filter_deps="libmfx"
3367 select_filter_select="pixelutils"
3368 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3369 showcqt_filter_deps="avcodec avformat swscale"
3370 showcqt_filter_suggest="libfontconfig libfreetype"
3371 showcqt_filter_select="fft"
3372 showfreqs_filter_deps="avcodec"
3373 showfreqs_filter_select="fft"
3374 showspectrum_filter_deps="avcodec"
3375 showspectrum_filter_select="fft"
3376 showspectrumpic_filter_deps="avcodec"
3377 showspectrumpic_filter_select="fft"
3378 signature_filter_deps="gpl avcodec avformat"
3379 smartblur_filter_deps="gpl swscale"
3380 sofalizer_filter_deps="libmysofa avcodec"
3381 sofalizer_filter_select="fft"
3382 spectrumsynth_filter_deps="avcodec"
3383 spectrumsynth_filter_select="fft"
3384 spp_filter_deps="gpl avcodec"
3385 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3386 stereo3d_filter_deps="gpl"
3387 subtitles_filter_deps="avformat avcodec libass"
3388 super2xsai_filter_deps="gpl"
3389 pixfmts_super2xsai_test_deps="super2xsai_filter"
3390 tinterlace_filter_deps="gpl"
3391 tinterlace_merge_test_deps="tinterlace_filter"
3392 tinterlace_pad_test_deps="tinterlace_filter"
3393 tonemap_filter_deps="const_nan"
3394 unsharp_opencl_filter_deps="opencl"
3395 uspp_filter_deps="gpl avcodec"
3396 vaguedenoiser_filter_deps="gpl"
3397 vidstabdetect_filter_deps="libvidstab"
3398 vidstabtransform_filter_deps="libvidstab"
3399 libvmaf_filter_deps="libvmaf pthreads"
3400 zmq_filter_deps="libzmq"
3401 zoompan_filter_deps="swscale"
3402 zscale_filter_deps="libzimg const_nan"
3403 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3404 vpp_qsv_filter_deps="libmfx"
3405 vpp_qsv_filter_select="qsvvpp"
3406
3407 # examples
3408 avio_dir_cmd_deps="avformat avutil"
3409 avio_reading_deps="avformat avcodec avutil"
3410 decode_audio_example_deps="avcodec avutil"
3411 decode_video_example_deps="avcodec avutil"
3412 demuxing_decoding_example_deps="avcodec avformat avutil"
3413 encode_audio_example_deps="avcodec avutil"
3414 encode_video_example_deps="avcodec avutil"
3415 extract_mvs_example_deps="avcodec avformat avutil"
3416 filter_audio_example_deps="avfilter avutil"
3417 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3418 filtering_video_example_deps="avfilter avcodec avformat avutil"
3419 http_multiclient_example_deps="avformat avutil fork"
3420 hw_decode_example_deps="avcodec avformat avutil"
3421 metadata_example_deps="avformat avutil"
3422 muxing_example_deps="avcodec avformat avutil swscale"
3423 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3424 remuxing_example_deps="avcodec avformat avutil"
3425 resampling_audio_example_deps="avutil swresample"
3426 scaling_video_example_deps="avutil swscale"
3427 transcode_aac_example_deps="avcodec avformat swresample"
3428 transcoding_example_deps="avfilter avcodec avformat avutil"
3429 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3430 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3431
3432 # EXTRALIBS_LIST
3433 cpu_init_extralibs="pthreads_extralibs"
3434 cws2fws_extralibs="zlib_extralibs"
3435
3436 # libraries, in linking order
3437 avcodec_deps="avutil"
3438 avcodec_suggest="libm"
3439 avcodec_select="null_bsf"
3440 avdevice_deps="avformat avcodec avutil"
3441 avdevice_suggest="libm"
3442 avfilter_deps="avutil"
3443 avfilter_suggest="libm"
3444 avformat_deps="avcodec avutil"
3445 avformat_suggest="libm network zlib"
3446 avresample_deps="avutil"
3447 avresample_suggest="libm"
3448 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3449 postproc_deps="avutil gpl"
3450 postproc_suggest="libm"
3451 swresample_deps="avutil"
3452 swresample_suggest="libm libsoxr"
3453 swscale_deps="avutil"
3454 swscale_suggest="libm"
3455
3456 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3457 avfilter_extralibs="pthreads_extralibs"
3458 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3459
3460 # programs
3461 ffmpeg_deps="avcodec avfilter avformat swresample"
3462 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3463                null_filter
3464                trim_filter"
3465 ffmpeg_suggest="ole32 psapi shell32"
3466 ffplay_deps="avcodec avformat swscale swresample sdl2"
3467 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3468 ffplay_suggest="shell32"
3469 ffprobe_deps="avcodec avformat"
3470 ffprobe_suggest="shell32"
3471
3472 # documentation
3473 podpages_deps="perl"
3474 manpages_deps="perl pod2man"
3475 htmlpages_deps="perl"
3476 htmlpages_deps_any="makeinfo_html texi2html"
3477 txtpages_deps="perl makeinfo"
3478 doc_deps_any="manpages htmlpages podpages txtpages"
3479
3480 # default parameters
3481
3482 logfile="ffbuild/config.log"
3483
3484 # installation paths
3485 prefix_default="/usr/local"
3486 bindir_default='${prefix}/bin'
3487 datadir_default='${prefix}/share/ffmpeg'
3488 docdir_default='${prefix}/share/doc/ffmpeg'
3489 incdir_default='${prefix}/include'
3490 libdir_default='${prefix}/lib'
3491 mandir_default='${prefix}/share/man'
3492
3493 # toolchain
3494 ar_default="ar"
3495 cc_default="gcc"
3496 cxx_default="g++"
3497 host_cc_default="gcc"
3498 doxygen_default="doxygen"
3499 install="install"
3500 ln_s_default="ln -s -f"
3501 nm_default="nm -g"
3502 pkg_config_default=pkg-config
3503 ranlib_default="ranlib"
3504 strip_default="strip"
3505 version_script='--version-script'
3506 objformat="elf32"
3507 x86asmexe_default="nasm"
3508 windres_default="windres"
3509 nvcc_default="nvcc"
3510 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3511 striptype="direct"
3512
3513 # OS
3514 target_os_default=$(tolower $(uname -s))
3515 host_os=$target_os_default
3516
3517 # machine
3518 if test "$target_os_default" = aix; then
3519     arch_default=$(uname -p)
3520     strip_default="strip -X32_64"
3521 else
3522     arch_default=$(uname -m)
3523 fi
3524 cpu="generic"
3525 intrinsics="none"
3526
3527 # configurable options
3528 enable $PROGRAM_LIST
3529 enable $DOCUMENT_LIST
3530 enable $EXAMPLE_LIST
3531 enable $(filter_out avresample $LIBRARY_LIST)
3532 enable stripping
3533
3534 enable asm
3535 enable debug
3536 enable doc
3537 enable faan faandct faanidct
3538 enable optimizations
3539 enable runtime_cpudetect
3540 enable safe_bitstream_reader
3541 enable static
3542 enable swscale_alpha
3543 enable valgrind_backtrace
3544
3545 sws_max_filter_size_default=256
3546 set_default sws_max_filter_size
3547
3548 # internal components are enabled by default
3549 enable $EXTRALIBS_LIST
3550
3551 # Avoid external, non-system, libraries getting enabled by dependency resolution
3552 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3553
3554 # build settings
3555 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3556 LIBPREF="lib"
3557 LIBSUF=".a"
3558 FULLNAME='$(NAME)$(BUILDSUF)'
3559 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3560 SLIBPREF="lib"
3561 SLIBSUF=".so"
3562 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3563 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3564 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3565 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3566 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3567 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3568 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3569
3570 asflags_filter=echo
3571 cflags_filter=echo
3572 ldflags_filter=echo
3573
3574 AS_C='-c'
3575 AS_O='-o $@'
3576 CC_C='-c'
3577 CC_E='-E -o $@'
3578 CC_O='-o $@'
3579 CXX_C='-c'
3580 CXX_O='-o $@'
3581 OBJCC_C='-c'
3582 OBJCC_E='-E -o $@'
3583 OBJCC_O='-o $@'
3584 X86ASM_O='-o $@'
3585 LD_O='-o $@'
3586 LD_LIB='-l%'
3587 LD_PATH='-L'
3588 HOSTCC_C='-c'
3589 HOSTCC_E='-E -o $@'
3590 HOSTCC_O='-o $@'
3591 HOSTLD_O='-o $@'
3592 NVCC_C='-c'
3593 NVCC_O='-o $@'
3594
3595 host_extralibs='-lm'
3596 host_cflags_filter=echo
3597 host_ldflags_filter=echo
3598
3599 target_path='$(CURDIR)'
3600
3601 # since the object filename is not given with the -MM flag, the compiler
3602 # is only able to print the basename, and we must add the path ourselves
3603 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3604 DEPFLAGS='-MM'
3605
3606 mkdir -p ffbuild
3607
3608 # find source path
3609 if test -f configure; then
3610     source_path=.
3611 else
3612     source_path=$(cd $(dirname "$0"); pwd)
3613     case "$source_path" in
3614         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3615     esac
3616     test -e "$source_path/config.h" &&
3617         die "Out of tree builds are impossible with config.h in source dir."
3618 fi
3619
3620 for v in "$@"; do
3621     r=${v#*=}
3622     l=${v%"$r"}
3623     r=$(sh_quote "$r")
3624     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3625 done
3626
3627 find_things_extern(){
3628     thing=$1
3629     pattern=$2
3630     file=$source_path/$3
3631     out=${4:-$thing}
3632     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3633 }
3634
3635 find_filters_extern(){
3636     file=$source_path/$1
3637     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3638     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3639 }
3640
3641 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3642 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3643 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3644 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3645 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3646 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3647 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3648 CODEC_LIST="
3649     $ENCODER_LIST
3650     $DECODER_LIST
3651 "
3652 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3653 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3654 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3655 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3656
3657 AVCODEC_COMPONENTS_LIST="
3658     $BSF_LIST
3659     $DECODER_LIST
3660     $ENCODER_LIST
3661     $HWACCEL_LIST
3662     $PARSER_LIST
3663 "
3664
3665 AVDEVICE_COMPONENTS_LIST="
3666     $INDEV_LIST
3667     $OUTDEV_LIST
3668 "
3669
3670 AVFILTER_COMPONENTS_LIST="
3671     $FILTER_LIST
3672 "
3673
3674 AVFORMAT_COMPONENTS_LIST="
3675     $DEMUXER_LIST
3676     $MUXER_LIST
3677     $PROTOCOL_LIST
3678 "
3679
3680 ALL_COMPONENTS="
3681     $AVCODEC_COMPONENTS_LIST
3682     $AVDEVICE_COMPONENTS_LIST
3683     $AVFILTER_COMPONENTS_LIST
3684     $AVFORMAT_COMPONENTS_LIST
3685 "
3686
3687 for n in $COMPONENT_LIST; do
3688     v=$(toupper ${n%s})_LIST
3689     eval enable \$$v
3690     eval ${n}_if_any="\$$v"
3691 done
3692
3693 enable $ARCH_EXT_LIST
3694
3695 die_unknown(){
3696     echo "Unknown option \"$1\"."
3697     echo "See $0 --help for available options."
3698     exit 1
3699 }
3700
3701 print_in_columns() {
3702     cols=$(expr $ncols / 24)
3703     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3704 }
3705
3706 show_list() {
3707     suffix=_$1
3708     shift
3709     echo $* | sed s/$suffix//g | print_in_columns
3710     exit 0
3711 }
3712
3713 rand_list(){
3714     IFS=', '
3715     set -- $*
3716     unset IFS
3717     for thing; do
3718         comp=${thing%:*}
3719         prob=${thing#$comp}
3720         prob=${prob#:}
3721         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3722         echo "prob ${prob:-0.5}"
3723         printf '%s\n' $comp
3724     done
3725 }
3726
3727 do_random(){
3728     action=$1
3729     shift
3730     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3731     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3732 }
3733
3734 for opt do
3735     optval="${opt#*=}"
3736     case "$opt" in
3737         --extra-ldflags=*)
3738             add_ldflags $optval
3739         ;;
3740         --extra-ldexeflags=*)
3741             add_ldexeflags $optval
3742         ;;
3743         --extra-ldsoflags=*)
3744             add_ldsoflags $optval
3745         ;;
3746         --extra-ldlibflags=*)
3747             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3748                  "removed in the future. Use --extra-ldsoflags instead."
3749             add_ldsoflags $optval
3750         ;;
3751         --extra-libs=*)
3752             add_extralibs $optval
3753         ;;
3754         --disable-devices)
3755             disable $INDEV_LIST $OUTDEV_LIST
3756         ;;
3757         --enable-debug=*)
3758             debuglevel="$optval"
3759         ;;
3760         --disable-programs)
3761             disable $PROGRAM_LIST
3762         ;;
3763         --disable-everything)
3764             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3765         ;;
3766         --disable-all)
3767             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3768             disable $LIBRARY_LIST $PROGRAM_LIST doc
3769             enable avutil
3770         ;;
3771         --enable-random|--disable-random)
3772             action=${opt%%-random}
3773             do_random ${action#--} $COMPONENT_LIST
3774         ;;
3775         --enable-random=*|--disable-random=*)
3776             action=${opt%%-random=*}
3777             do_random ${action#--} $optval
3778         ;;
3779         --enable-sdl)
3780             enable sdl2
3781         ;;
3782         --enable-*=*|--disable-*=*)
3783             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3784             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3785             eval list=\$$(toupper $thing)_LIST
3786             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3787             list=$(filter "$name" $list)
3788             [ "$list" = "" ] && warn "Option $opt did not match anything"
3789             $action $list
3790         ;;
3791         --enable-yasm|--disable-yasm)
3792             warn "The ${opt} option is only provided for compatibility and will be\n"\
3793                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3794             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3795         ;;
3796         --yasmexe=*)
3797             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3798                  "removed in the future. Use --x86asmexe instead."
3799             x86asmexe="$optval"
3800         ;;
3801         --enable-?*|--disable-?*)
3802             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3803             if is_in $option $COMPONENT_LIST; then
3804                 test $action = disable && action=unset
3805                 eval $action \$$(toupper ${option%s})_LIST
3806             elif is_in $option $CMDLINE_SELECT; then
3807                 $action $option
3808             else
3809                 die_unknown $opt
3810             fi
3811         ;;
3812         --list-*)
3813             NAME="${opt#--list-}"
3814             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3815             NAME=${NAME%s}
3816             eval show_list $NAME \$$(toupper $NAME)_LIST
3817         ;;
3818         --help|-h) show_help
3819         ;;
3820         --quiet|-q) quiet=yes
3821         ;;
3822         --fatal-warnings) enable fatal_warnings
3823         ;;
3824         --libfuzzer=*)
3825             libfuzzer_path="$optval"
3826         ;;
3827         *)
3828             optname="${opt%%=*}"
3829             optname="${optname#--}"
3830             optname=$(echo "$optname" | sed 's/-/_/g')
3831             if is_in $optname $CMDLINE_SET; then
3832                 eval $optname='$optval'
3833             elif is_in $optname $CMDLINE_APPEND; then
3834                 append $optname "$optval"
3835             else
3836                 die_unknown $opt
3837             fi
3838         ;;
3839     esac
3840 done
3841
3842 for e in $env; do
3843     eval "export $e"
3844 done
3845
3846 if disabled autodetect; then
3847
3848     # Unless iconv is explicitely disabled by the user, we still want to probe
3849     # for the iconv from the libc.
3850     disabled iconv || enable libc_iconv
3851
3852     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3853     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3854 fi
3855 # Mark specifically enabled, but normally autodetected libraries as requested.
3856 for lib in $AUTODETECT_LIBS; do
3857     enabled $lib && request $lib
3858 done
3859 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3860 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3861 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3862
3863 disabled logging && logfile=/dev/null
3864
3865 # command line configuration sanity checks
3866
3867 # we need to build at least one lib type
3868 if ! enabled_any static shared; then
3869     cat <<EOF
3870 At least one library type must be built.
3871 Specify --enable-static to build the static libraries or --enable-shared to
3872 build the shared libraries as well. To only build the shared libraries specify
3873 --disable-static in addition to --enable-shared.
3874 EOF
3875     exit 1
3876 fi
3877
3878 die_license_disabled() {
3879     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3880 }
3881
3882 die_license_disabled_gpl() {
3883     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3884 }
3885
3886 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3887 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3888
3889 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3890 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3891
3892 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3893
3894 if enabled nonfree; then
3895     license="nonfree and unredistributable"
3896 elif enabled gplv3; then
3897     license="GPL version 3 or later"
3898 elif enabled lgplv3; then
3899     license="LGPL version 3 or later"
3900 elif enabled gpl; then
3901     license="GPL version 2 or later"
3902 else
3903     license="LGPL version 2.1 or later"
3904 fi
3905
3906 enabled_all gnutls openssl &&
3907     die "GnuTLS and OpenSSL must not be enabled at the same time."
3908
3909 # Disable all the library-specific components if the library itself
3910 # is disabled, see AVCODEC_LIST and following _LIST variables.
3911
3912 disable_components(){
3913     disabled ${1} && disable $(
3914         eval components="\$$(toupper ${1})_COMPONENTS"
3915         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3916     )
3917 }
3918
3919 map 'disable_components $v' $LIBRARY_LIST
3920
3921 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3922 set >> $logfile
3923
3924 test -n "$valgrind" && toolchain="valgrind-memcheck"
3925
3926 enabled ossfuzz && {
3927     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3928     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3929 }
3930
3931 case "$toolchain" in
3932     *-asan)
3933         cc_default="${toolchain%-asan}"
3934         add_cflags  -fsanitize=address
3935         add_ldflags -fsanitize=address
3936     ;;
3937     *-msan)
3938         cc_default="${toolchain%-msan}"
3939         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3940         add_ldflags -fsanitize=memory
3941     ;;
3942     *-tsan)
3943         cc_default="${toolchain%-tsan}"
3944         add_cflags  -fsanitize=thread -fPIE
3945         add_ldflags -fsanitize=thread -pie
3946         case "$toolchain" in
3947             gcc-tsan)
3948                 add_cflags  -fPIC
3949                 add_ldflags -fPIC
3950                 ;;
3951         esac
3952     ;;
3953     *-usan)
3954         cc_default="${toolchain%-usan}"
3955         add_cflags  -fsanitize=undefined
3956         add_ldflags -fsanitize=undefined
3957     ;;
3958     valgrind-*)
3959         target_exec_default="valgrind"
3960         case "$toolchain" in
3961             valgrind-massif)
3962                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3963                 ;;
3964             valgrind-memcheck)
3965                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3966                 ;;
3967         esac
3968     ;;
3969     msvc)
3970         # Check whether the current MSVC version needs the C99 converter.
3971         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3972         # support enough of C99 to build ffmpeg. Default to the new
3973         # behaviour if the regexp was unable to match anything, since this
3974         # successfully parses the version number of existing supported
3975         # versions that require the converter (MSVC 2010 and 2012).
3976         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3977         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3978             cc_default="cl"
3979             cxx_default="cl"
3980         else
3981             cc_default="c99wrap cl"
3982             cxx_default="c99wrap cl"
3983         fi
3984         ld_default="$source_path/compat/windows/mslink"
3985         nm_default="dumpbin -symbols"
3986         ar_default="lib"
3987         case "$arch" in
3988         aarch64|arm64)
3989             as_default="armasm64"
3990             ;;
3991         arm*)
3992             as_default="armasm"
3993             ;;
3994         esac
3995         target_os_default="win32"
3996         # Use a relative path for TMPDIR. This makes sure all the
3997         # ffconf temp files are written with a relative path, avoiding
3998         # issues with msys/win32 path conversion for MSVC parameters
3999         # such as -Fo<file> or -out:<file>.
4000         TMPDIR=.
4001     ;;
4002     icl)
4003         cc_default="icl"
4004         ld_default="xilink"
4005         nm_default="dumpbin -symbols"
4006         ar_default="xilib"
4007         target_os_default="win32"
4008         TMPDIR=.
4009     ;;
4010     gcov)
4011         add_cflags  -fprofile-arcs -ftest-coverage
4012         add_ldflags -fprofile-arcs -ftest-coverage
4013     ;;
4014     llvm-cov)
4015         add_cflags -fprofile-arcs -ftest-coverage
4016         add_ldflags --coverage
4017     ;;
4018     hardened)
4019         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4020         add_cflags   -fno-strict-overflow -fstack-protector-all
4021         add_ldflags  -Wl,-z,relro -Wl,-z,now
4022         add_cflags   -fPIE
4023         add_ldexeflags -fPIE -pie
4024     ;;
4025     ?*)
4026         die "Unknown toolchain $toolchain"
4027     ;;
4028 esac
4029
4030 if test -n "$cross_prefix"; then
4031     test -n "$arch" && test -n "$target_os" ||
4032         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4033     enable cross_compile
4034 fi
4035
4036 ar_default="${cross_prefix}${ar_default}"
4037 cc_default="${cross_prefix}${cc_default}"
4038 cxx_default="${cross_prefix}${cxx_default}"
4039 nm_default="${cross_prefix}${nm_default}"
4040 pkg_config_default="${cross_prefix}${pkg_config_default}"
4041 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4042     ranlib_default="${cross_prefix}${ranlib_default} -D"
4043 else
4044     ranlib_default="${cross_prefix}${ranlib_default}"
4045 fi
4046 strip_default="${cross_prefix}${strip_default}"
4047 windres_default="${cross_prefix}${windres_default}"
4048
4049 sysinclude_default="${sysroot}/usr/include"
4050
4051 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4052     target_exec target_os x86asmexe nvcc
4053 enabled cross_compile || host_cc_default=$cc
4054 set_default host_cc
4055
4056 pkg_config_fail_message=""
4057 if ! $pkg_config --version >/dev/null 2>&1; then
4058     warn "$pkg_config not found, library detection may fail."
4059     pkg_config=false
4060 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4061     pkg_config_fail_message="
4062 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4063 fi
4064
4065 if test $doxygen != $doxygen_default && \
4066   ! $doxygen --version >/dev/null 2>&1; then
4067     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4068 fi
4069
4070 exesuf() {
4071     case $1 in
4072         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4073     esac
4074 }
4075
4076 EXESUF=$(exesuf $target_os)
4077 HOSTEXESUF=$(exesuf $host_os)
4078
4079 # set temporary file name
4080 : ${TMPDIR:=$TEMPDIR}
4081 : ${TMPDIR:=$TMP}
4082 : ${TMPDIR:=/tmp}
4083
4084 if [ -n "$tempprefix" ] ; then
4085     mktemp(){
4086         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4087         echo "$tmpname"
4088         mkdir "$tmpname"
4089     }
4090 elif ! test_cmd mktemp -u XXXXXX; then
4091     # simple replacement for missing mktemp
4092     # NOT SAFE FOR GENERAL USE
4093     mktemp(){
4094         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4095         echo "$tmpname"
4096         mkdir "$tmpname"
4097     }
4098 fi
4099
4100 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4101     die "Unable to create temporary directory in $TMPDIR."
4102
4103 tmpfile(){
4104     tmp="${FFTMPDIR}/test"$2
4105     (set -C; exec > $tmp) 2> /dev/null ||
4106         die "Unable to create temporary file in $FFTMPDIR."
4107     eval $1=$tmp
4108 }
4109
4110 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4111 trap 'exit 2' INT
4112
4113 tmpfile TMPASM .asm
4114 tmpfile TMPC   .c
4115 tmpfile TMPCPP .cpp
4116 tmpfile TMPE   $EXESUF
4117 tmpfile TMPH   .h
4118 tmpfile TMPM   .m
4119 tmpfile TMPO   .o
4120 tmpfile TMPS   .S
4121 tmpfile TMPSH  .sh
4122 tmpfile TMPV   .ver
4123
4124 unset -f mktemp
4125
4126 chmod +x $TMPE
4127
4128 # make sure we can execute files in $TMPDIR
4129 cat > $TMPSH 2>> $logfile <<EOF
4130 #! /bin/sh
4131 EOF
4132 chmod +x $TMPSH >> $logfile 2>&1
4133 if ! $TMPSH >> $logfile 2>&1; then
4134     cat <<EOF
4135 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4136 variable to another directory and make sure that it is not mounted noexec.
4137 EOF
4138     die "Sanity test failed."
4139 fi
4140
4141 armasm_flags(){
4142     for flag; do
4143         case $flag in
4144             # Filter out MSVC cl.exe options from cflags that shouldn't
4145             # be passed to gas-preprocessor
4146             -M[TD]*)                                            ;;
4147             *)                  echo $flag                      ;;
4148         esac
4149    done
4150 }
4151
4152 cparser_flags(){
4153     for flag; do
4154         case $flag in
4155             -Wno-switch)             echo -Wno-switch-enum ;;
4156             -Wno-format-zero-length) ;;
4157             -Wdisabled-optimization) ;;
4158             -Wno-pointer-sign)       echo -Wno-other ;;
4159             *)                       echo $flag ;;
4160         esac
4161     done
4162 }
4163
4164 msvc_common_flags(){
4165     for flag; do
4166         case $flag in
4167             # In addition to specifying certain flags under the compiler
4168             # specific filters, they must be specified here as well or else the
4169             # generic catch all at the bottom will print the original flag.
4170             -Wall)                ;;
4171             -Wextra)              ;;
4172             -std=c99)             ;;
4173             # Common flags
4174             -fomit-frame-pointer) ;;
4175             -g)                   echo -Z7 ;;
4176             -fno-math-errno)      ;;
4177             -fno-common)          ;;
4178             -fno-signed-zeros)    ;;
4179             -fPIC)                ;;
4180             -mthumb)              ;;
4181             -march=*)             ;;
4182             -lz)                  echo zlib.lib ;;
4183             -lx264)               echo libx264.lib ;;
4184             -lstdc++)             ;;
4185             -l*)                  echo ${flag#-l}.lib ;;
4186             -LARGEADDRESSAWARE)   echo $flag ;;
4187             -L*)                  echo -libpath:${flag#-L} ;;
4188             *)                    echo $flag ;;
4189         esac
4190     done
4191 }
4192
4193 msvc_flags(){
4194     msvc_common_flags "$@"
4195     for flag; do
4196         case $flag in
4197             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4198                                        -wd4554 ;;
4199             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4200                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4201                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4202                                        -wd4307 \
4203                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4204         esac
4205     done
4206 }
4207
4208 icl_flags(){
4209     msvc_common_flags "$@"
4210     for flag; do
4211         case $flag in
4212             # Despite what Intel's documentation says -Wall, which is supported
4213             # on Windows, does enable remarks so disable them here.
4214             -Wall)                echo $flag -Qdiag-disable:remark ;;
4215             -std=c99)             echo -Qstd=c99 ;;
4216             -flto)                echo -ipo ;;
4217         esac
4218     done
4219 }
4220
4221 icc_flags(){
4222     for flag; do
4223         case $flag in
4224             -flto)                echo -ipo ;;
4225             *)                    echo $flag ;;
4226         esac
4227     done
4228 }
4229
4230 suncc_flags(){
4231     for flag; do
4232         case $flag in
4233             -march=*|-mcpu=*)
4234                 case "${flag#*=}" in
4235                     native)                   echo -xtarget=native       ;;
4236                     v9|niagara)               echo -xarch=sparc          ;;
4237                     ultrasparc)               echo -xarch=sparcvis       ;;
4238                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4239                     i586|pentium)             echo -xchip=pentium        ;;
4240                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4241                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4242                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4243                     pentium4*)          echo -xtarget=pentium4           ;;
4244                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4245                     *-sse3)             echo -xarch=sse3                 ;;
4246                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4247                     bonnell)                   echo -xarch=ssse3         ;;
4248                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4249                     westmere)                  echo -xtarget=westmere    ;;
4250                     silvermont)                echo -xarch=sse4_2        ;;
4251                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4252                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4253                                                echo -xarch=avx           ;;
4254                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4255                     btver1)                    echo -xarch=amdsse4a      ;;
4256                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4257                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4258                     k8|opteron|athlon64|athlon-fx)
4259                                                echo -xarch=sse2a         ;;
4260                     athlon*)                   echo -xarch=pentium_proa  ;;
4261                 esac
4262                 ;;
4263             -std=c99)             echo -xc99              ;;
4264             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4265             -fPIC)                echo -KPIC -xcode=pic32 ;;
4266             -W*,*)                echo $flag              ;;
4267             -f*-*|-W*|-mimpure-text)                      ;;
4268             -shared)              echo -G                 ;;
4269             *)                    echo $flag              ;;
4270         esac
4271     done
4272 }
4273
4274 probe_cc(){
4275     pfx=$1
4276     _cc=$2
4277     first=$3
4278
4279     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4280     unset _ld_o _ldflags _ld_lib _ld_path
4281     unset _depflags _DEPCMD _DEPFLAGS
4282     _flags_filter=echo
4283
4284     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4285         true # no-op to avoid reading stdin in following checks
4286     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4287         _type=llvm_gcc
4288         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4289         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4290         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4291         _cflags_speed='-O3'
4292         _cflags_size='-Os'
4293     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4294         _type=gcc
4295         gcc_version=$($_cc --version | head -n1)
4296         gcc_basever=$($_cc -dumpversion)
4297         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4298         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4299         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4300         case $gcc_basever in
4301             2) ;;
4302             2.*) ;;
4303             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4304         esac
4305         if [ "$first" = true ]; then
4306             case $gcc_basever in
4307                 4.2*)
4308                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4309             esac
4310         fi
4311         _cflags_speed='-O3'
4312         _cflags_size='-Os'
4313     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4314         _type=icc
4315         _ident=$($_cc --version | head -n1)
4316         _depflags='-MMD'
4317         _cflags_speed='-O3'
4318         _cflags_size='-Os'
4319         _cflags_noopt='-O1'
4320         _flags_filter=icc_flags
4321     elif $_cc -v 2>&1 | grep -q xlc; then
4322         _type=xlc
4323         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4324         _cflags_speed='-O5'
4325         _cflags_size='-O5 -qcompact'
4326     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4327         test -d "$sysroot" || die "No valid sysroot specified."
4328         _type=armcc
4329         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4330         armcc_conf="$PWD/armcc.conf"
4331         $_cc --arm_linux_configure                 \
4332              --arm_linux_config_file="$armcc_conf" \
4333              --configure_sysroot="$sysroot"        \
4334              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4335              die "Error creating armcc configuration file."
4336         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4337         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4338         as_default="${cross_prefix}gcc"
4339         _depflags='-MMD'
4340         _cflags_speed='-O3'
4341         _cflags_size='-Os'
4342     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4343         _type=clang
4344         _ident=$($_cc --version 2>/dev/null | head -n1)
4345         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4346         _cflags_speed='-O3'
4347         _cflags_size='-Oz'
4348     elif $_cc -V 2>&1 | grep -q Sun; then
4349         _type=suncc
4350         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4351         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4352         _DEPFLAGS='-xM1 -xc99'
4353         _ldflags='-std=c99'
4354         _cflags_speed='-O5'
4355         _cflags_size='-O5 -xspace'
4356         _flags_filter=suncc_flags
4357     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4358         _type=pathscale
4359         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4360         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4361         _cflags_speed='-O2'
4362         _cflags_size='-Os'
4363         _flags_filter='filter_out -Wdisabled-optimization'
4364     elif $_cc -v 2>&1 | grep -q Open64; then
4365         _type=open64
4366         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4367         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4368         _cflags_speed='-O2'
4369         _cflags_size='-Os'
4370         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4371     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4372         _type=armasm
4373         _ident=$($_cc | head -n1)
4374         # 4509: "This form of conditional instruction is deprecated"
4375         _flags="-nologo -ignore 4509"
4376         _flags_filter=armasm_flags
4377     elif $_cc 2>&1 | grep -q Intel; then
4378         _type=icl
4379         _ident=$($_cc 2>&1 | head -n1)
4380         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4381         # Not only is O3 broken on 13.x+ but it is slower on all previous
4382         # versions (tested) as well.
4383         _cflags_speed="-O2"
4384         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4385         if $_cc 2>&1 | grep -q Linker; then
4386             _ld_o='-out:$@'
4387         else
4388             _ld_o='-Fe$@'
4389         fi
4390         _cc_o='-Fo$@'
4391         _cc_e='-P'
4392         _flags_filter=icl_flags
4393         _ld_lib='lib%.a'
4394         _ld_path='-libpath:'
4395         # -Qdiag-error to make icl error when seeing certain unknown arguments
4396         _flags='-nologo -Qdiag-error:4044,10157'
4397         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4398         # with MSVC which enables it by default.
4399         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4400         disable stripping
4401     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4402         # lld can emulate multiple different linkers; in ms link.exe mode,
4403         # the -? parameter gives the help output which contains an identifyable
4404         # string, while it gives an error in other modes.
4405         _type=lld-link
4406         # The link.exe mode doesn't have a switch for getting the version,
4407         # but we can force it back to gnu mode and get the version from there.
4408         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4409         _ld_o='-out:$@'
4410         _flags_filter=msvc_flags
4411         _ld_lib='lib%.a'
4412         _ld_path='-libpath:'
4413     elif $_cc -nologo- 2>&1 | grep -q Microsoft || $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; then
4414         _type=msvc
4415         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4416         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4417         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4418         _cflags_speed="-O2"
4419         _cflags_size="-O1"
4420         _cflags_noopt="-O1"
4421         if $_cc -nologo- 2>&1 | grep -q Linker; then
4422             _ld_o='-out:$@'
4423         else
4424             _ld_o='-Fe$@'
4425         fi
4426         _cc_o='-Fo$@'
4427         _cc_e='-P -Fi$@'
4428         _flags_filter=msvc_flags
4429         _ld_lib='lib%.a'
4430         _ld_path='-libpath:'
4431         _flags='-nologo'
4432         disable stripping
4433     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4434         _type=cparser
4435         _ident=$($_cc --version | head -n1)
4436         _depflags='-MMD'
4437         _cflags_speed='-O4'
4438         _cflags_size='-O2'
4439         _flags_filter=cparser_flags
4440     fi
4441
4442     eval ${pfx}_type=\$_type
4443     eval ${pfx}_ident=\$_ident
4444 }
4445
4446 set_ccvars(){
4447     eval ${1}_C=\${_cc_c-\${${1}_C}}
4448     eval ${1}_E=\${_cc_e-\${${1}_E}}
4449     eval ${1}_O=\${_cc_o-\${${1}_O}}
4450
4451     if [ -n "$_depflags" ]; then
4452         eval ${1}_DEPFLAGS=\$_depflags
4453     else
4454         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4455         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4456         eval DEP${1}FLAGS=\$_flags
4457     fi
4458 }
4459
4460 probe_cc cc "$cc" "true"
4461 cflags_filter=$_flags_filter
4462 cflags_speed=$_cflags_speed
4463 cflags_size=$_cflags_size
4464 cflags_noopt=$_cflags_noopt
4465 add_cflags $_flags $_cflags
4466 cc_ldflags=$_ldflags
4467 set_ccvars CC
4468 set_ccvars CXX
4469
4470 probe_cc hostcc "$host_cc"
4471 host_cflags_filter=$_flags_filter
4472 host_cflags_speed=$_cflags_speed
4473 add_host_cflags  $_flags $_cflags
4474 set_ccvars HOSTCC
4475
4476 test -n "$cc_type" && enable $cc_type ||
4477     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4478
4479 : ${as_default:=$cc}
4480 : ${objcc_default:=$cc}
4481 : ${dep_cc_default:=$cc}
4482 : ${ld_default:=$cc}
4483 : ${host_ld_default:=$host_cc}
4484 set_default ar as objcc dep_cc ld ln_s host_ld windres
4485
4486 probe_cc as "$as"
4487 asflags_filter=$_flags_filter
4488 add_asflags $_flags $_cflags
4489 set_ccvars AS
4490
4491 probe_cc objcc "$objcc"
4492 objcflags_filter=$_flags_filter
4493 add_objcflags $_flags $_cflags
4494 set_ccvars OBJC
4495
4496 probe_cc ld "$ld"
4497 ldflags_filter=$_flags_filter
4498 add_ldflags $_flags $_ldflags
4499 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4500 LD_O=${_ld_o-$LD_O}
4501 LD_LIB=${_ld_lib-$LD_LIB}
4502 LD_PATH=${_ld_path-$LD_PATH}
4503
4504 probe_cc hostld "$host_ld"
4505 host_ldflags_filter=$_flags_filter
4506 add_host_ldflags $_flags $_ldflags
4507 HOSTLD_O=${_ld_o-$HOSTLD_O}
4508
4509 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4510     probe_cc depcc "$dep_cc"
4511     CCDEP=${_DEPCMD:-$DEPCMD}
4512     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4513     DEPCCFLAGS=$_flags
4514 fi
4515
4516 if $ar 2>&1 | grep -q Microsoft; then
4517     arflags="-nologo"
4518     ar_o='-out:$@'
4519 elif $ar 2>&1 | grep -q "\[D\] "; then
4520     arflags="rcD"
4521     ar_o='$@'
4522 else
4523     arflags="rc"
4524     ar_o='$@'
4525 fi
4526
4527 add_cflags $extra_cflags
4528 add_cxxflags $extra_cxxflags
4529 add_objcflags $extra_objcflags
4530 add_asflags $extra_cflags
4531
4532 if test -n "$sysroot"; then
4533     case "$cc_type" in
4534         gcc|llvm_gcc|clang)
4535             add_cppflags --sysroot="$sysroot"
4536             add_ldflags --sysroot="$sysroot"
4537         ;;
4538     esac
4539 fi
4540
4541 if test "$cpu" = host; then
4542     enabled cross_compile &&
4543         die "--cpu=host makes no sense when cross-compiling."
4544
4545     case "$cc_type" in
4546         gcc|llvm_gcc)
4547             check_native(){
4548                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4549                 sed -n "/cc1.*$1=/{
4550                             s/.*$1=\\([^ ]*\\).*/\\1/
4551                             p
4552                             q
4553                         }" $TMPE
4554             }
4555             cpu=$(check_native -march || check_native -mcpu)
4556         ;;
4557         clang)
4558             check_native(){
4559                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4560                 sed -n "/cc1.*-target-cpu /{
4561                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4562                             p
4563                             q
4564                         }" $TMPE
4565             }
4566             cpu=$(check_native -march)
4567         ;;
4568     esac
4569
4570     test "${cpu:-host}" = host &&
4571         die "--cpu=host not supported with compiler $cc"
4572 fi
4573
4574 # Deal with common $arch aliases
4575 case "$arch" in
4576     aarch64|arm64)
4577         arch="aarch64"
4578     ;;
4579     arm*|iPad*|iPhone*)
4580         arch="arm"
4581     ;;
4582     mips*|IP*)
4583         case "$arch" in
4584         *el)
4585             add_cppflags -EL
4586             add_ldflags -EL
4587         ;;
4588         *eb)
4589             add_cppflags -EB
4590             add_ldflags -EB
4591         ;;
4592         esac
4593         arch="mips"
4594     ;;
4595     parisc*|hppa*)
4596         arch="parisc"
4597     ;;
4598     "Power Macintosh"|ppc*|powerpc*)
4599         arch="ppc"
4600     ;;
4601     s390|s390x)
4602         arch="s390"
4603     ;;
4604     sh4|sh)
4605         arch="sh4"
4606     ;;
4607     sun4*|sparc*)
4608         arch="sparc"
4609     ;;
4610     tilegx|tile-gx)
4611         arch="tilegx"
4612     ;;
4613     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4614         arch="x86"
4615     ;;
4616 esac
4617
4618 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4619 enable $arch
4620
4621 # Add processor-specific flags
4622 if enabled aarch64; then
4623
4624     case $cpu in
4625         armv*)
4626             cpuflags="-march=$cpu"
4627         ;;
4628         *)
4629             cpuflags="-mcpu=$cpu"
4630         ;;
4631     esac
4632
4633 elif enabled alpha; then
4634
4635     cpuflags="-mcpu=$cpu"
4636
4637 elif enabled arm; then
4638
4639     check_arm_arch() {
4640         test_cpp_condition stddef.h \
4641             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4642             $cpuflags
4643     }
4644
4645     probe_arm_arch() {
4646         if   check_arm_arch 4;        then echo armv4
4647         elif check_arm_arch 4T;       then echo armv4t
4648         elif check_arm_arch 5;        then echo armv5
4649         elif check_arm_arch 5E;       then echo armv5e
4650         elif check_arm_arch 5T;       then echo armv5t
4651         elif check_arm_arch 5TE;      then echo armv5te
4652         elif check_arm_arch 5TEJ;     then echo armv5te
4653         elif check_arm_arch 6;        then echo armv6
4654         elif check_arm_arch 6J;       then echo armv6j
4655         elif check_arm_arch 6K;       then echo armv6k
4656         elif check_arm_arch 6Z;       then echo armv6z
4657         elif check_arm_arch 6KZ;      then echo armv6zk
4658         elif check_arm_arch 6ZK;      then echo armv6zk
4659         elif check_arm_arch 6T2;      then echo armv6t2
4660         elif check_arm_arch 7;        then echo armv7
4661         elif check_arm_arch 7A  7_A;  then echo armv7-a
4662         elif check_arm_arch 7S;       then echo armv7-a
4663         elif check_arm_arch 7R  7_R;  then echo armv7-r
4664         elif check_arm_arch 7M  7_M;  then echo armv7-m
4665         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4666         elif check_arm_arch 8A  8_A;  then echo armv8-a
4667         fi
4668     }
4669
4670     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4671
4672     case $cpu in
4673         armv*)
4674             cpuflags="-march=$cpu"
4675             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4676         ;;
4677         *)
4678             cpuflags="-mcpu=$cpu"
4679             case $cpu in
4680                 cortex-a*)                               subarch=armv7a  ;;
4681                 cortex-r*)                               subarch=armv7r  ;;
4682                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4683                 arm11*)                                  subarch=armv6   ;;
4684                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4685                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4686                 *)                             subarch=$(probe_arm_arch) ;;
4687             esac
4688         ;;
4689     esac
4690
4691     case "$subarch" in
4692         armv5t*)    enable fast_clz                ;;
4693         armv[6-8]*)
4694             enable fast_clz
4695             disabled fast_unaligned || enable fast_unaligned
4696             ;;
4697     esac
4698
4699 elif enabled avr32; then
4700
4701     case $cpu in
4702         ap7[02]0[0-2])
4703             subarch="avr32_ap"
4704             cpuflags="-mpart=$cpu"
4705         ;;
4706         ap)
4707             subarch="avr32_ap"
4708             cpuflags="-march=$cpu"
4709         ;;
4710         uc3[ab]*)
4711             subarch="avr32_uc"
4712             cpuflags="-mcpu=$cpu"
4713         ;;
4714         uc)
4715             subarch="avr32_uc"
4716             cpuflags="-march=$cpu"
4717         ;;
4718     esac
4719
4720 elif enabled bfin; then
4721
4722     cpuflags="-mcpu=$cpu"
4723
4724 elif enabled mips; then
4725
4726     cpuflags="-march=$cpu"
4727
4728     if [ "$cpu" != "generic" ]; then
4729         disable mips32r2
4730         disable mips32r5
4731         disable mips64r2
4732         disable mips32r6
4733         disable mips64r6
4734         disable loongson2
4735         disable loongson3
4736
4737         case $cpu in
4738             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4739                 enable mips32r2
4740                 disable msa
4741             ;;
4742             p5600|i6400|p6600)
4743                 disable mipsdsp
4744                 disable mipsdspr2
4745             ;;
4746             loongson*)
4747                 enable loongson2
4748                 enable loongson3
4749                 enable local_aligned
4750                 enable simd_align_16
4751                 enable fast_64bit
4752                 enable fast_clz
4753                 enable fast_cmov
4754                 enable fast_unaligned
4755                 disable aligned_stack
4756                 disable mipsfpu
4757                 disable mipsdsp
4758                 disable mipsdspr2
4759                 case $cpu in
4760                     loongson3*)
4761                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4762                     ;;
4763                     loongson2e)
4764                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4765                     ;;
4766                     loongson2f)
4767                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4768                     ;;
4769                 esac
4770             ;;
4771             *)
4772                 # Unknown CPU. Disable everything.
4773                 warn "unknown CPU. Disabling all MIPS optimizations."
4774                 disable mipsfpu
4775                 disable mipsdsp
4776                 disable mipsdspr2
4777                 disable msa
4778                 disable mmi
4779             ;;
4780         esac
4781
4782         case $cpu in
4783             24kc)
4784                 disable mipsfpu
4785                 disable mipsdsp
4786                 disable mipsdspr2
4787             ;;
4788             24kf*)
4789                 disable mipsdsp
4790                 disable mipsdspr2
4791             ;;
4792             24kec|34kc|1004kc)
4793                 disable mipsfpu
4794                 disable mipsdspr2
4795             ;;
4796             24kef*|34kf*|1004kf*)
4797                 disable mipsdspr2
4798             ;;
4799             74kc)
4800                 disable mipsfpu
4801             ;;
4802             p5600)
4803                 enable mips32r5
4804                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4805             ;;
4806             i6400)
4807                 enable mips64r6
4808                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4809             ;;
4810             p6600)
4811                 enable mips64r6
4812                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4813             ;;
4814         esac
4815     else
4816         # We do not disable anything. Is up to the user to disable the unwanted features.
4817         warn 'generic cpu selected'
4818     fi
4819
4820 elif enabled ppc; then
4821
4822     disable ldbrx
4823
4824     case $(tolower $cpu) in
4825         601|ppc601|powerpc601)
4826             cpuflags="-mcpu=601"
4827             disable altivec
4828         ;;
4829         603*|ppc603*|powerpc603*)
4830             cpuflags="-mcpu=603"
4831             disable altivec
4832         ;;
4833         604*|ppc604*|powerpc604*)
4834             cpuflags="-mcpu=604"
4835             disable altivec
4836         ;;
4837         g3|75*|ppc75*|powerpc75*)
4838             cpuflags="-mcpu=750"
4839             disable altivec
4840         ;;
4841         g4|745*|ppc745*|powerpc745*)
4842             cpuflags="-mcpu=7450"
4843             disable vsx
4844         ;;
4845         74*|ppc74*|powerpc74*)
4846             cpuflags="-mcpu=7400"
4847             disable vsx
4848         ;;
4849         g5|970|ppc970|powerpc970)
4850             cpuflags="-mcpu=970"
4851             disable vsx
4852         ;;
4853         power[3-6]*)
4854             cpuflags="-mcpu=$cpu"
4855             disable vsx
4856         ;;
4857         power[7-8]*)
4858             cpuflags="-mcpu=$cpu"
4859         ;;
4860         cell)
4861             cpuflags="-mcpu=cell"
4862             enable ldbrx
4863             disable vsx
4864         ;;
4865         e500mc)
4866             cpuflags="-mcpu=e500mc"
4867             disable altivec
4868         ;;
4869         e500v2)
4870             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4871             disable altivec
4872             disable dcbzl
4873         ;;
4874         e500)
4875             cpuflags="-mcpu=8540 -mhard-float"
4876             disable altivec
4877             disable dcbzl
4878         ;;
4879     esac
4880
4881 elif enabled sparc; then
4882
4883     case $cpu in
4884         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4885             cpuflags="-mcpu=$cpu"
4886         ;;
4887         ultrasparc*|niagara[234])
4888             cpuflags="-mcpu=$cpu"
4889         ;;
4890     esac
4891
4892 elif enabled x86; then
4893
4894     case $cpu in
4895         i[345]86|pentium)
4896             cpuflags="-march=$cpu"
4897             disable i686
4898             disable mmx
4899         ;;
4900         # targets that do NOT support nopl and conditional mov (cmov)
4901         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4902             cpuflags="-march=$cpu"
4903             disable i686
4904         ;;
4905         # targets that do support nopl and conditional mov (cmov)
4906         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4907         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4908         |amdfam10|barcelona|b[dt]ver*|znver*)
4909             cpuflags="-march=$cpu"
4910             enable i686
4911             enable fast_cmov
4912         ;;
4913         # targets that do support conditional mov but on which it's slow
4914         pentium4|pentium4m|prescott|nocona)
4915             cpuflags="-march=$cpu"
4916             enable i686
4917             disable fast_cmov
4918         ;;
4919     esac
4920
4921 fi
4922
4923 if [ "$cpu" != generic ]; then
4924     add_cflags  $cpuflags
4925     add_asflags $cpuflags
4926     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4927 fi
4928
4929 # compiler sanity check
4930 test_exec <<EOF
4931 int main(void){ return 0; }
4932 EOF
4933 if test "$?" != 0; then
4934     echo "$cc is unable to create an executable file."
4935     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4936         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4937         echo "Only do this if you know what cross compiling means."
4938     fi
4939     die "C compiler test failed."
4940 fi
4941
4942 add_cppflags -D_ISOC99_SOURCE
4943 add_cxxflags -D__STDC_CONSTANT_MACROS
4944 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4945
4946 # some compilers silently accept -std=c11, so we also need to check that the
4947 # version macro is defined properly
4948 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4949     add_cflags -std=c11 ||
4950     check_cflags -std=c99
4951
4952 check_cppflags -D_FILE_OFFSET_BITS=64
4953 check_cppflags -D_LARGEFILE_SOURCE
4954
4955 add_host_cppflags -D_ISOC99_SOURCE
4956 check_host_cflags -std=c99
4957 check_host_cflags -Wall
4958 check_host_cflags $host_cflags_speed
4959
4960 check_64bit(){
4961     arch32=$1
4962     arch64=$2
4963     expr=${3:-'sizeof(void *) > 4'}
4964     test_code cc "" "int test[2*($expr) - 1]" &&
4965         subarch=$arch64 || subarch=$arch32
4966     enable $subarch
4967 }
4968
4969 case "$arch" in
4970     aarch64|alpha|ia64)
4971         enabled shared && enable_weak pic
4972     ;;
4973     mips)
4974         check_64bit mips mips64 '_MIPS_SIM > 1'
4975         enabled shared && enable_weak pic
4976     ;;
4977     parisc)
4978         check_64bit parisc parisc64
4979         enabled shared && enable_weak pic
4980     ;;
4981     ppc)
4982         check_64bit ppc ppc64
4983         enabled shared && enable_weak pic
4984     ;;
4985     s390)
4986         check_64bit s390 s390x
4987         enabled shared && enable_weak pic
4988     ;;
4989     sparc)
4990         check_64bit sparc sparc64
4991         enabled shared && enable_weak pic
4992     ;;
4993     x86)
4994         check_64bit x86_32 x86_64
4995         # Treat x32 as x64 for now. Note it also needs pic if shared
4996         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
4997             subarch=x86_64 && enable x86_64 && disable x86_32
4998         if enabled x86_64; then
4999             enabled shared && enable_weak pic
5000             objformat=elf64
5001         fi
5002     ;;
5003 esac
5004
5005 # OS specific
5006 case $target_os in
5007     aix)
5008         SHFLAGS=-shared
5009         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5010         enabled shared && add_ldflags -Wl,-brtl
5011         arflags='-Xany -r -c'
5012         striptype=""
5013         ;;
5014     android)
5015         disable symver
5016         enable section_data_rel_ro
5017         SLIB_INSTALL_NAME='$(SLIBNAME)'
5018         SLIB_INSTALL_LINKS=
5019         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5020         ;;
5021     haiku)
5022         prefix_default="/boot/common"
5023         network_extralibs="-lnetwork"
5024         host_extralibs=
5025         ;;
5026     sunos)
5027         SHFLAGS='-shared -Wl,-h,$$(@F)'
5028         enabled x86 && append SHFLAGS -mimpure-text
5029         network_extralibs="-lsocket -lnsl"
5030         add_cppflags -D__EXTENSIONS__
5031         # When using suncc to build, the Solaris linker will mark
5032         # an executable with each instruction set encountered by
5033         # the Solaris assembler.  As our libraries contain their own
5034         # guards for processor-specific code, instead suppress
5035         # generation of the HWCAPS ELF section on Solaris x86 only.
5036         enabled_all suncc x86 &&
5037             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5038             add_ldflags -Wl,-M,mapfile
5039         nm_default='nm -P -g'
5040         version_script='-M'
5041         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5042         ;;
5043     netbsd)
5044         disable symver
5045         oss_indev_extralibs="-lossaudio"
5046         oss_outdev_extralibs="-lossaudio"
5047         enabled gcc || check_ldflags -Wl,-zmuldefs
5048         ;;
5049     openbsd|bitrig)
5050         disable symver
5051         striptype=""
5052         SHFLAGS='-shared'
5053         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5054         SLIB_INSTALL_LINKS=
5055         oss_indev_extralibs="-lossaudio"
5056         oss_outdev_extralibs="-lossaudio"
5057         ;;
5058     dragonfly)
5059         disable symver
5060         ;;
5061     freebsd)
5062         ;;
5063     bsd/os)
5064         add_extralibs -lpoll -lgnugetopt
5065         strip="strip -d"
5066         ;;
5067     darwin)
5068         enabled ppc && add_asflags -force_cpusubtype_ALL
5069         install_name_dir_default='$(SHLIBDIR)'
5070         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5071         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5072         strip="${strip} -x"
5073         add_ldflags -Wl,-dynamic,-search_paths_first
5074         check_cflags -Werror=partial-availability
5075         SLIBSUF=".dylib"
5076         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5077         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5078         enabled x86_64 && objformat="macho64" || objformat="macho32"
5079         enabled_any pic shared x86_64 ||
5080             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5081         check_header dispatch/dispatch.h &&
5082             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5083         if test -n "$sysroot"; then
5084             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5085             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5086         fi
5087         version_script='-exported_symbols_list'
5088         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5089         ;;
5090     msys*)
5091         die "Native MSYS builds are discouraged, please use the MINGW environment."
5092         ;;
5093     mingw32*|mingw64*)
5094         target_os=mingw32
5095         LIBTARGET=i386
5096         if enabled x86_64; then
5097             LIBTARGET="i386:x86-64"
5098         elif enabled arm; then
5099             LIBTARGET="arm"
5100         elif enabled aarch64; then
5101             LIBTARGET="arm64"
5102         fi
5103         if enabled shared; then
5104             # Cannot build both shared and static libs when using dllimport.
5105             disable static
5106         fi
5107         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5108         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5109         shlibdir_default="$bindir_default"
5110         SLIBPREF=""
5111         SLIBSUF=".dll"
5112         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5113         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5114         if test_cmd lib.exe -list; then
5115             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5116             if enabled x86_64; then
5117                 LIBTARGET=x64
5118             fi
5119         else
5120             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5121         fi
5122         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5123         SLIB_INSTALL_LINKS=
5124         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5125         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5126         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5127         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5128         enabled x86_64 && objformat="win64" || objformat="win32"
5129         dlltool="${cross_prefix}dlltool"
5130         ranlib=:
5131         enable dos_paths
5132         check_ldflags -Wl,--nxcompat,--dynamicbase
5133         # Lets work around some stupidity in binutils.
5134         # ld will strip relocations from executables even though we need them
5135         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5136         # however ld then forgets what the entry point should be (oops) so we
5137         # have to manually (re)set it.
5138         if enabled x86_32; then
5139             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5140         elif enabled x86_64; then
5141             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5142             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5143             # Set image base >4GB for extra entropy with HEASLR
5144             add_ldexeflags -Wl,--image-base,0x140000000
5145             append SHFLAGS -Wl,--image-base,0x180000000
5146         fi
5147         ;;
5148     win32|win64)
5149         disable symver
5150         if enabled shared; then
5151             # Link to the import library instead of the normal static library
5152             # for shared libs.
5153             LD_LIB='%.lib'
5154             # Cannot build both shared and static libs with MSVC or icl.
5155             disable static
5156         fi
5157         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5158         shlibdir_default="$bindir_default"
5159         SLIBPREF=""
5160         SLIBSUF=".dll"
5161         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5162         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5163         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5164         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5165         SLIB_INSTALL_LINKS=
5166         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5167         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5168         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5169         enabled x86_64 && objformat="win64" || objformat="win32"
5170         ranlib=:
5171         enable dos_paths
5172         ;;
5173     cygwin*)
5174         target_os=cygwin
5175         shlibdir_default="$bindir_default"
5176         SLIBPREF="cyg"
5177         SLIBSUF=".dll"
5178         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5179         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5180         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5181         SLIB_INSTALL_LINKS=
5182         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5183         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5184         enabled x86_64 && objformat="win64" || objformat="win32"
5185         enable dos_paths
5186         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5187         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5188         ;;
5189     *-dos|freedos|opendos)
5190         network_extralibs="-lsocket"
5191         objformat="coff"
5192         enable dos_paths
5193         add_cppflags -U__STRICT_ANSI__
5194         ;;
5195     linux)
5196         enable section_data_rel_ro
5197         enabled_any arm aarch64 && enable_weak linux_perf
5198         ;;
5199     irix*)
5200         target_os=irix
5201         ranlib="echo ignoring ranlib"
5202         ;;
5203     os/2*)
5204         strip="lxlite -CS"
5205         striptype=""
5206         objformat="aout"
5207         add_cppflags -D_GNU_SOURCE
5208         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5209         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5210         LIBSUF="_s.a"
5211         SLIBPREF=""
5212         SLIBSUF=".dll"
5213         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5214         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5215         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5216             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5217             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5218             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5219             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5220         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5221             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5222         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5223         SLIB_INSTALL_LINKS=
5224         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5225         enable dos_paths
5226         enable_weak os2threads
5227         ;;
5228     gnu/kfreebsd)
5229         add_cppflags -D_BSD_SOURCE
5230         ;;
5231     gnu)
5232         ;;
5233     qnx)
5234         add_cppflags -D_QNX_SOURCE
5235         network_extralibs="-lsocket"
5236         ;;
5237     symbian)
5238         SLIBSUF=".dll"
5239         enable dos_paths
5240         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5241         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5242         add_ldflags -Wl,--target1-abs,--no-undefined \
5243                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5244                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5245         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5246                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5247                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5248         ;;
5249     minix)
5250         ;;
5251     none)
5252         ;;
5253     *)
5254         die "Unknown OS '$target_os'."
5255         ;;
5256 esac
5257
5258 # test if creating links works
5259 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5260 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5261 mkdir "$link_dest"
5262 $ln_s "$link_dest" "$link_name"
5263 touch "$link_dest/test_file"
5264 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5265     # create link to source path
5266     [ -e src ] && rm src
5267     $ln_s "$source_path" src
5268     source_link=src
5269 else
5270     # creating directory links doesn't work
5271     # fall back to using the full source path
5272     source_link="$source_path"
5273 fi
5274 # cleanup
5275 rm -r "$link_dest"
5276 rm -r "$link_name"
5277
5278 # determine libc flavour
5279
5280 probe_libc(){
5281     pfx=$1
5282     pfx_no_=${pfx%_}
5283     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5284     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5285         eval ${pfx}libc_type=uclibc
5286         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5287     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5288         eval ${pfx}libc_type=glibc
5289         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5290     # MinGW headers can be installed on Cygwin, so check for newlib first.
5291     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5292         eval ${pfx}libc_type=newlib
5293         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5294     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5295     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5296         eval ${pfx}libc_type=mingw64
5297         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5298             add_compat msvcrt/snprintf.o
5299             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5300         fi
5301         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5302         eval test \$${pfx_no_}cc_type = "gcc" &&
5303             add_${pfx}cppflags -D__printf__=__gnu_printf__
5304         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5305             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5306     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5307          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5308         eval ${pfx}libc_type=mingw32
5309         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5310             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5311             die "ERROR: MinGW32 runtime version must be >= 3.15."
5312         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5313         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5314             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5315         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5316             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5317         eval test \$${pfx_no_}cc_type = "gcc" &&
5318             add_${pfx}cppflags -D__printf__=__gnu_printf__
5319     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5320         eval ${pfx}libc_type=msvcrt
5321         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5322             if [ "$pfx" = host_ ]; then
5323                 add_host_cppflags -Dsnprintf=_snprintf
5324             else
5325                 add_compat strtod.o strtod=avpriv_strtod
5326                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5327                                              _snprintf=avpriv_snprintf  \
5328                                              vsnprintf=avpriv_vsnprintf
5329             fi
5330         fi
5331         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5332         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5333         # 0x601 by default unless something else is set by the user.
5334         # This can easily lead to us detecting functions only present
5335         # in such new versions and producing binaries requiring windows 7.0.
5336         # Therefore explicitly set the default to Vista unless the user has
5337         # set something else on the command line.
5338         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5339         # family. For these cases, configure is free to use any functions
5340         # found in the SDK headers by default. (Alternatively, we could force
5341         # _WIN32_WINNT to 0x0602 in that case.)
5342         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5343             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5344 #ifdef WINAPI_FAMILY
5345 #include <winapifamily.h>
5346 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5347 #error not desktop
5348 #endif
5349 #endif
5350 EOF
5351         if [ "$pfx" = "" ]; then
5352             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5353             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5354         fi
5355     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5356         eval ${pfx}libc_type=klibc
5357     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5358         eval ${pfx}libc_type=bionic
5359     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5360         eval ${pfx}libc_type=solaris
5361         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5362     fi
5363     test_${pfx}cc <<EOF
5364 #include <time.h>
5365 void *v = localtime_r;
5366 EOF
5367 test "$?" != 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
5368 #include <time.h>
5369 void *v = localtime_r;
5370 EOF
5371
5372     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5373 }
5374
5375 probe_libc
5376 probe_libc host_
5377
5378 # hacks for compiler/libc/os combinations
5379
5380 case $libc_type in
5381     bionic)
5382         add_compat strtod.o strtod=avpriv_strtod
5383         ;;
5384 esac
5385
5386 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5387     add_cppflags '-I\$(SRC_PATH)/compat/float'
5388
5389 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5390
5391 set_default libdir
5392 : ${shlibdir_default:="$libdir"}
5393 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5394
5395 set_default $PATHS_LIST
5396 set_default nm
5397
5398 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5399
5400 enable_weak_pic() {
5401     disabled pic && return
5402     enable pic
5403     add_cppflags -DPIC
5404     case "$target_os" in
5405     mingw*|cygwin*|win*)
5406         ;;
5407     *)
5408         add_cflags -fPIC
5409         add_asflags -fPIC
5410         ;;
5411     esac
5412 }
5413
5414 enabled pic && enable_weak_pic
5415
5416 test_cc <<EOF || die "Symbol mangling check failed."
5417 int ff_extern;
5418 EOF
5419 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5420 extern_prefix=${sym%%ff_extern*}
5421
5422 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5423
5424 for restrict_keyword in restrict __restrict__ __restrict ""; do
5425     test_code cc "" "char * $restrict_keyword p" && break
5426 done
5427
5428 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5429
5430 # The global variable ensures the bits appear unchanged in the object file.
5431 test_cc <<EOF || die "endian test failed"
5432 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5433 EOF
5434 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5435
5436 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5437
5438 if ! enabled ppc64 || enabled bigendian; then
5439     disable vsx
5440 fi
5441
5442 check_gas() {
5443     log "check_gas using '$as' as AS"
5444     # :vararg is used on aarch64, arm and ppc altivec
5445     check_as vararg "
5446 .macro m n, y:vararg=0
5447 \n: .int \y
5448 .endm
5449 m x" || return 1
5450     # .altmacro is only used in arm asm
5451     ! enabled arm || check_as gnu_as ".altmacro"
5452 }
5453
5454 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5455     nogas=:
5456     enabled_any arm aarch64 && nogas=die
5457     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5458     as_noop=-v
5459
5460     case $as_type in
5461         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5462         gcc)  gaspp_as_type=gas ;;
5463         *)    gaspp_as_type=$as_type ;;
5464     esac
5465
5466     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5467
5468     test "${as#*gas-preprocessor.pl}" != "$as" ||
5469     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5470         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5471
5472     if ! check_gas ; then
5473         as=${gas:=$as}
5474         check_gas || \
5475             $nogas "GNU assembler not found, install/update gas-preprocessor"
5476     fi
5477
5478     check_as as_func ".func test
5479                       .endfunc"
5480 fi
5481
5482 check_inline_asm inline_asm_labels '"1:\n"'
5483
5484 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5485
5486 if enabled aarch64; then
5487     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5488     # internal assembler in clang 3.3 does not support this instruction
5489     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5490     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5491
5492     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5493
5494 elif enabled alpha; then
5495
5496     check_cflags -mieee
5497
5498 elif enabled arm; then
5499
5500     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5501     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5502 float func(float a, float b){ return a+b; }
5503 EOF
5504     enabled thumb && check_cflags -mthumb || check_cflags -marm
5505
5506     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5507         :
5508     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5509         :
5510     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5511         case "${cross_prefix:-$cc}" in
5512             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5513             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5514 __asm__ (".eabi_attribute 28, 1");
5515 int main(void) { return 0; }
5516 EOF
5517         esac
5518         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5519     fi
5520
5521     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5522     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5523     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5524     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5525     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5526     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5527     enabled setend  && check_insn setend  'setend be'
5528
5529     [ $target_os = linux ] || [ $target_os = android ] ||
5530         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5531             $ARCH_EXT_LIST_ARM
5532
5533     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5534
5535     check_as as_arch_directive ".arch armv7-a"
5536     check_as as_dn_directive   "ra .dn d0.i16"
5537     check_as as_fpu_directive  ".fpu neon"
5538
5539     # llvm's integrated assembler supports .object_arch from llvm 3.5
5540     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5541         check_as as_object_arch ".object_arch armv4"
5542
5543     # MS armasm fails to assemble our PIC constructs
5544     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5545
5546 elif enabled mips; then
5547
5548     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5549     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5550     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5551
5552     # Enable minimum ISA based on selected options
5553     if enabled mips64; then
5554         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5555         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5556         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5557     else
5558         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5559         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5560         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5561         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5562     fi
5563
5564     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5565     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5566     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5567     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5568     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5569
5570     if enabled bigendian && enabled msa; then
5571         disable msa
5572     fi
5573
5574 elif enabled parisc; then
5575
5576     if enabled gcc; then
5577         case $($cc -dumpversion) in
5578             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5579         esac
5580     fi
5581
5582 elif enabled ppc; then
5583
5584     enable local_aligned
5585
5586     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5587     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5588     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5589     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5590
5591     if enabled altivec; then
5592         check_cflags -maltivec -mabi=altivec
5593
5594         # check if our compiler supports Motorola AltiVec C API
5595         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5596                                     vector signed int v2 = (vector signed int) { 1 };
5597                                     v1 = vec_add(v1, v2);"
5598
5599         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5600     fi
5601
5602     if enabled vsx; then
5603         check_cflags -mvsx &&
5604         check_cc vsx altivec.h "int v[4] = { 0 };
5605                                 vector signed int v1 = vec_vsx_ld(0, v);"
5606     fi
5607
5608     if enabled power8; then
5609         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5610     fi
5611
5612 elif enabled x86; then
5613
5614     check_builtin rdtsc    intrin.h   "__rdtsc()"
5615     check_builtin mm_empty mmintrin.h "_mm_empty()"
5616
5617     enable local_aligned
5618
5619     # check whether EBP is available on x86
5620     # As 'i' is stored on the stack, this program will crash
5621     # if the base pointer is used to access it because the
5622     # base pointer is cleared in the inline assembly code.
5623     check_exec_crash <<EOF && enable ebp_available
5624 volatile int i=0;
5625 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5626 return i;
5627 EOF
5628
5629     # check whether EBX is available on x86
5630     check_inline_asm ebx_available '""::"b"(0)' &&
5631         check_inline_asm ebx_available '"":::"%ebx"'
5632
5633     # check whether xmm clobbers are supported
5634     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5635
5636     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5637         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5638
5639     # check whether binutils is new enough to compile SSSE3/MMXEXT
5640     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5641     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5642
5643     probe_x86asm(){
5644         x86asmexe_probe=$1
5645         if test_cmd $x86asmexe_probe -v; then
5646             x86asmexe=$x86asmexe_probe
5647             x86asm_type=nasm
5648             x86asm_debug="-g -F dwarf"
5649             X86ASMDEP=
5650             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5651         elif test_cmd $x86asmexe_probe --version; then
5652             x86asmexe=$x86asmexe_probe
5653             x86asm_type=yasm
5654             x86asm_debug="-g dwarf2"
5655             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5656             X86ASM_DEPFLAGS=
5657         fi
5658         check_x86asm x86asm "movbe ecx, [5]"
5659     }
5660
5661     if ! disabled_any asm mmx x86asm; then
5662         disable x86asm
5663         for program in $x86asmexe nasm yasm; do
5664             probe_x86asm $program && break
5665         done
5666         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5667         X86ASMFLAGS="-f $objformat"
5668         enabled pic               && append X86ASMFLAGS "-DPIC"
5669         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5670         case "$objformat" in
5671             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5672         esac
5673
5674         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5675         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5676         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5677         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5678         check_x86asm cpunop          "CPU amdnop"
5679     fi
5680
5681     case "$cpu" in
5682         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5683             disable fast_clz
5684         ;;
5685     esac
5686
5687 fi
5688
5689 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5690
5691 check_ldflags -Wl,--as-needed
5692 check_ldflags -Wl,-z,noexecstack
5693
5694 if ! disabled network; then
5695     check_func getaddrinfo $network_extralibs
5696     check_func inet_aton $network_extralibs
5697
5698     check_type netdb.h "struct addrinfo"
5699     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5700     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5701     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5702     check_type poll.h "struct pollfd"
5703     check_type netinet/sctp.h "struct sctp_event_subscribe"
5704     check_struct "sys/socket.h" "struct msghdr" msg_flags
5705     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5706     check_type netinet/in.h "struct sockaddr_in6"
5707     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5708     check_type "sys/types.h sys/socket.h" socklen_t
5709
5710     # Prefer arpa/inet.h over winsock2
5711     if check_header arpa/inet.h ; then
5712         check_func closesocket
5713     elif check_header winsock2.h ; then
5714         check_func_headers winsock2.h closesocket -lws2 &&
5715             network_extralibs="-lws2" ||
5716         { check_func_headers winsock2.h closesocket -lws2_32 &&
5717             network_extralibs="-lws2_32"; } || disable winsock2_h network
5718         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5719
5720         check_type ws2tcpip.h socklen_t
5721         check_type ws2tcpip.h "struct addrinfo"
5722         check_type ws2tcpip.h "struct group_source_req"
5723         check_type ws2tcpip.h "struct ip_mreq_source"
5724         check_type ws2tcpip.h "struct ipv6_mreq"
5725         check_type winsock2.h "struct pollfd"
5726         check_struct winsock2.h "struct sockaddr" sa_len
5727         check_type ws2tcpip.h "struct sockaddr_in6"
5728         check_type ws2tcpip.h "struct sockaddr_storage"
5729     else
5730         disable network
5731     fi
5732 fi
5733
5734 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5735 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5736 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5737 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5738 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5739 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5740 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5741
5742 case "$custom_allocator" in
5743     jemalloc)
5744         # jemalloc by default does not use a prefix
5745         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5746     ;;
5747     tcmalloc)
5748         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5749         malloc_prefix=tc_
5750     ;;
5751 esac
5752
5753 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5754 check_func  ${malloc_prefix}memalign            && enable memalign
5755 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5756
5757 check_func  access
5758 check_func_headers stdlib.h arc4random
5759 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5760 check_func  fcntl
5761 check_func  fork
5762 check_func  gethrtime
5763 check_func  getopt
5764 check_func  getrusage
5765 check_func  gettimeofday
5766 check_func  isatty
5767 check_func  mkstemp
5768 check_func  mmap
5769 check_func  mprotect
5770 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5771 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5772 check_func  sched_getaffinity
5773 check_func  setrlimit
5774 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5775 check_func  strerror_r
5776 check_func  sysconf
5777 check_func  sysctl
5778 check_func  usleep
5779
5780 check_func_headers conio.h kbhit
5781 check_func_headers io.h setmode
5782 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5783 check_func_headers mach/mach_time.h mach_absolute_time
5784 check_func_headers stdlib.h getenv
5785 check_func_headers sys/stat.h lstat
5786
5787 check_func_headers windows.h GetProcessAffinityMask
5788 check_func_headers windows.h GetProcessTimes
5789 check_func_headers windows.h GetSystemTimeAsFileTime
5790 check_func_headers windows.h LoadLibrary
5791 check_func_headers windows.h MapViewOfFile
5792 check_func_headers windows.h PeekNamedPipe
5793 check_func_headers windows.h SetConsoleTextAttribute
5794 check_func_headers windows.h SetConsoleCtrlHandler
5795 check_func_headers windows.h Sleep
5796 check_func_headers windows.h VirtualAlloc
5797 check_func_headers glob.h glob
5798 enabled xlib &&
5799     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5800
5801 check_header direct.h
5802 check_header dirent.h
5803 check_header dxgidebug.h
5804 check_header dxva.h
5805 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5806 check_header io.h
5807 check_header linux/perf_event.h
5808 check_header libcrystalhd/libcrystalhd_if.h
5809 check_header malloc.h
5810 check_header net/udplite.h
5811 check_header poll.h
5812 check_header sys/param.h
5813 check_header sys/resource.h
5814 check_header sys/select.h
5815 check_header sys/time.h
5816 check_header sys/un.h
5817 check_header termios.h
5818 check_header unistd.h
5819 check_header valgrind/valgrind.h
5820 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5821 check_header windows.h
5822 check_header X11/extensions/XvMClib.h
5823 check_header asm/types.h
5824
5825 # it seems there are versions of clang in some distros that try to use the
5826 # gcc headers, which explodes for stdatomic
5827 # so we also check that atomics actually work here
5828 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5829
5830 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5831 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5832     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5833 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5834 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5835 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5836
5837 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5838 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5839 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5840
5841 enabled appkit       && check_apple_framework AppKit
5842 enabled audiotoolbox && check_apple_framework AudioToolbox
5843 enabled avfoundation && check_apple_framework AVFoundation
5844 enabled coreimage    && check_apple_framework CoreImage
5845 enabled videotoolbox && check_apple_framework VideoToolbox
5846
5847 check_apple_framework CoreFoundation
5848 check_apple_framework CoreMedia
5849 check_apple_framework CoreVideo
5850
5851 enabled avfoundation && {
5852     disable coregraphics applicationservices
5853     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5854     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5855
5856 enabled videotoolbox && {
5857     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5858     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5859 }
5860
5861 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5862
5863 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5864 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5865 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5866 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5867 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5868
5869 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5870 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5871 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5872 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5873 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5874 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5875 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5876 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5877 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5878 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5879
5880 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5881
5882 if ! disabled ffnvcodec; then
5883     check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.1" \
5884         "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5885 fi
5886
5887 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5888
5889 if ! disabled w32threads && ! enabled pthreads; then
5890     check_func_headers "windows.h process.h" _beginthreadex &&
5891         check_type "windows.h" CONDITION_VARIABLE &&
5892         check_type "windows.h" INIT_ONCE &&
5893         enable w32threads || disable w32threads
5894     if ! enabled w32threads && enabled winrt; then
5895         check_func_headers "windows.h" CreateThread &&
5896             enable w32threads || disable w32threads
5897     fi
5898 fi
5899
5900 # check for some common methods of building with pthread support
5901 # do this before the optional library checks as some of them require pthreads
5902 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5903     if check_lib pthreads pthread.h pthread_join   -pthread &&
5904        check_lib pthreads pthread.h pthread_create -pthread; then
5905         add_cflags -pthread
5906     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5907          check_lib pthreads pthread.h pthread_create -pthreads; then
5908         add_cflags -pthreads
5909     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5910          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5911         add_cflags -ldl -pthread
5912     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5913          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5914         :
5915     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5916          check_lib pthreads pthread.h pthread_create -lpthread; then
5917         :
5918     elif check_func pthread_join && check_func pthread_create; then
5919         enable pthreads
5920     fi
5921     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
5922
5923     if enabled pthreads; then
5924         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5925         check_func pthread_cancel $pthreads_extralibs
5926     fi
5927 fi
5928
5929 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5930 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5931 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5932
5933 # On some systems dynamic loading requires no extra linker flags
5934 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5935
5936 check_lib libm math.h sin -lm
5937
5938 atan2f_args=2
5939 copysign_args=2
5940 hypot_args=2
5941 ldexpf_args=2
5942 powf_args=2
5943
5944 for func in $MATH_FUNCS; do
5945     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5946 done
5947
5948 for func in $COMPLEX_FUNCS; do
5949     eval check_complexfunc $func \${${func}_args:-1}
5950 done
5951
5952 # these are off by default, so fail if requested and not available
5953 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5954 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5955 enabled decklink          && { require_header DeckLinkAPI.h &&
5956                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5957 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5958 enabled frei0r            && require_header frei0r.h
5959 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5960 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5961 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5962 enabled ladspa            && require_header ladspa.h
5963 enabled libaom            && require_pkg_config libaom "aom >= 0.1.0" aom/aom_codec.h aom_codec_version
5964 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5965 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5966 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5967 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5968 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5969 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5970                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5971                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5972 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5973 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
5974 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5975 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5976 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5977                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5978                                  warn "using libfdk without pkg-config"; } }
5979 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"
5980 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5981 enabled fontconfig        && enable libfontconfig
5982 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5983 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5984 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5985 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5986                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5987 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5988                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5989                                done || die "ERROR: libgsm not found"; }
5990 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5991 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5992 # While it may appear that require is being used as a pkg-config
5993 # fallback for libmfx, it is actually being used to detect a different
5994 # installation route altogether.  If libmfx is installed via the Intel
5995 # Media SDK or Intel Media Server Studio, these don't come with
5996 # pkg-config support.  Instead, users should make sure that the build
5997 # can find the libraries and headers through other means.
5998 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5999                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6000 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6001 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6002 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
6003 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6004                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6005                                die "ERROR: libnpp not found"; }
6006 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6007 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6008 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6009                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6010                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6011                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6012 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6013 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6014                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6015 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6016 enabled libopus           && {
6017     enabled libopus_decoder && {
6018         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6019     }
6020     enabled libopus_encoder && {
6021         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6022     }
6023 }
6024 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6025 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6026 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6027 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6028 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6029 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6030                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6031 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6032 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6033 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6034 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6035 enabled libsrt            && require_pkg_config libsrt "srt >= 1.2.0" srt/srt.h srt_socket
6036 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6037 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6038 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6039 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6040                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6041                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6042 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6043 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6044 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
6045 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6046 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6047                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6048
6049 enabled libvpx            && {
6050     enabled libvpx_vp8_decoder && {
6051         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6052             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6053                 die "ERROR: libvpx decoder version must be >=1.4.0";
6054     }
6055     enabled libvpx_vp8_encoder && {
6056         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6057             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6058                 die "ERROR: libvpx encoder version must be >=1.4.0";
6059     }
6060     enabled libvpx_vp9_decoder && {
6061         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6062             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6063     }
6064     enabled libvpx_vp9_encoder && {
6065         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6066             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6067     }
6068     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6069         die "libvpx enabled but no supported decoders found"
6070     fi
6071 }
6072
6073 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6074 enabled libwebp           && {
6075     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6076     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6077 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6078                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6079                                  warn "using libx264 without pkg-config"; } } &&
6080                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6081                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6082 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6083                              require_cpp_condition x265.h "X265_BUILD >= 68"
6084 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6085 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6086 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6087 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6088 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6089                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6090                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6091 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6092 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6093 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6094                                { ! enabled cross_compile &&
6095                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6096                                  add_ldflags -L/opt/vc/lib/ &&
6097                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6098                                die "ERROR: mmal not found" &&
6099                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6100 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6101                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6102                                die "ERROR: openal not found"; } &&
6103                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6104                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6105 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6106                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6107                                die "ERROR: opencl not found"; } &&
6108                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6109                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6110                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6111 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6112                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6113                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6114                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6115                                die "ERROR: opengl not found."
6116                              }
6117 enabled omx               && require_header OMX_Core.h
6118 enabled omx_rpi           && { check_header OMX_Core.h ||
6119                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6120                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6121 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6122                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6123                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6124                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6125                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6126                                die "ERROR: openssl not found"; }
6127 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6128                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6129                                { enabled libdrm ||
6130                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6131                              }
6132
6133 if enabled gcrypt; then
6134     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6135     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6136         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6137         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6138         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6139             die "ERROR: gcrypt not found"
6140         add_cflags $gcrypt_cflags
6141     else
6142         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6143     fi
6144 fi
6145
6146 if enabled sdl2; then
6147     SDL2_CONFIG="${cross_prefix}sdl2-config"
6148     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6149     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6150         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6151         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6152         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6153         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6154         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6155             enable sdl2
6156     fi
6157     if test $target_os = "mingw32"; then
6158         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6159     fi
6160 fi
6161
6162 if enabled decklink; then
6163     case $target_os in
6164         mingw32*|mingw64*|win32|win64)
6165             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6166             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6167             ;;
6168     esac
6169 fi
6170
6171 enabled securetransport &&
6172     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6173     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6174         disable securetransport
6175
6176 enabled securetransport &&
6177     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6178
6179 enabled schannel &&
6180     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6181     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6182     schannel_extralibs="-lsecur32" ||
6183         disable schannel
6184
6185 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6186 enabled makeinfo \
6187     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6188     && enable makeinfo_html || disable makeinfo_html
6189 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6190 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6191 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6192 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6193
6194 # check V4L2 codecs available in the API
6195 check_header linux/fb.h
6196 check_header linux/videodev2.h
6197 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6198 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6199 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6200 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6201 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6202 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6203 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6204 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6205 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6206 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6207 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6208
6209 check_header sys/videoio.h
6210 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6211
6212 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6213 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6214 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6215 # w32api 3.12 had it defined wrong
6216 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6217
6218 check_type "dshow.h" IBaseFilter
6219
6220 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6221 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6222     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6223     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6224     check_header "dev/ic/bt8xx.h"
6225
6226 if check_struct sys/soundcard.h audio_buf_info bytes; then
6227     enable_sanitized sys/soundcard.h
6228 else
6229     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6230     #include <sys/soundcard.h>
6231     audio_buf_info abc;
6232 EOF
6233 fi
6234
6235 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6236     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6237
6238 enabled libjack &&
6239     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6240
6241 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6242
6243 if enabled libcdio; then
6244     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6245     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6246     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6247     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6248     die "ERROR: No usable libcdio/cdparanoia found"
6249 fi
6250
6251 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6252     disable libxcb_shm libxcb_shape libxcb_xfixes
6253
6254 if enabled libxcb; then
6255     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6256     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6257     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6258 fi
6259
6260 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6261
6262 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6263 # the desktop api partition
6264 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6265 #ifdef WINAPI_FAMILY
6266 #include <winapifamily.h>
6267 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6268 #error desktop, not uwp
6269 #else
6270 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6271 #endif
6272 #else
6273 #error no family set
6274 #endif
6275 EOF
6276
6277 enabled vaapi &&
6278     check_lib vaapi va/va.h vaInitialize -lva
6279
6280 enabled vaapi &&
6281     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6282
6283 if enabled vaapi; then
6284     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6285     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6286 fi
6287
6288 enabled vaapi &&
6289     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6290
6291 if enabled_all opencl libdrm ; then
6292     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6293         enable opencl_drm_beignet
6294     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6295         enable opencl_drm_arm
6296 fi
6297
6298 if enabled_all opencl vaapi ; then
6299     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6300     if enabled libmfx ; then
6301         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6302             enable opencl_vaapi_intel_media
6303     fi
6304 fi
6305
6306 if enabled_all opencl dxva2 ; then
6307     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6308         enable opencl_dxva2
6309 fi
6310
6311 if enabled_all opencl d3d11va ; then
6312     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6313         enable opencl_d3d11
6314 fi
6315
6316 enabled vdpau &&
6317     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6318
6319 enabled vdpau &&
6320     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6321
6322 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6323
6324 if enabled x86; then
6325     case $target_os in
6326         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6327             ;;
6328         *)
6329             disable ffnvcodec cuvid nvdec nvenc
6330             ;;
6331     esac
6332 else
6333     disable ffnvcodec cuvid nvdec nvenc
6334 fi
6335
6336 enabled ffnvcodec && enable cuda
6337
6338 enabled nvenc &&
6339     test_cc -I$source_path <<EOF || disable nvenc
6340 #include <ffnvcodec/nvEncodeAPI.h>
6341 NV_ENCODE_API_FUNCTION_LIST flist;
6342 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6343 int main(void) { return 0; }
6344 EOF
6345
6346 enabled amf &&
6347     check_cpp_condition amf "AMF/core/Version.h" \
6348         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6349
6350 # Funny iconv installations are not unusual, so check it after all flags have been set
6351 if enabled libc_iconv; then
6352     check_func_headers iconv.h iconv
6353 elif enabled iconv; then
6354     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6355 fi
6356
6357 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6358
6359 # add some useful compiler flags if supported
6360 check_cflags -Wdeclaration-after-statement
6361 check_cflags -Wall
6362 check_cflags -Wdisabled-optimization
6363 check_cflags -Wpointer-arith
6364 check_cflags -Wredundant-decls
6365 check_cflags -Wwrite-strings
6366 check_cflags -Wtype-limits
6367 check_cflags -Wundef
6368 check_cflags -Wmissing-prototypes
6369 check_cflags -Wno-pointer-to-int-cast
6370 check_cflags -Wstrict-prototypes
6371 check_cflags -Wempty-body
6372
6373 if enabled extra_warnings; then
6374     check_cflags -Wcast-qual
6375     check_cflags -Wextra
6376     check_cflags -Wpedantic
6377 fi
6378
6379 check_disable_warning(){
6380     warning_flag=-W${1#-Wno-}
6381     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6382 }
6383
6384 test_cflags -Werror=unused-command-line-argument &&
6385     append unknown_warning_flags "-Werror=unused-command-line-argument"
6386 test_cflags -Werror=unknown-warning-option &&
6387     append unknown_warning_flags "-Werror=unknown-warning-option"
6388
6389 check_disable_warning -Wno-parentheses
6390 check_disable_warning -Wno-switch
6391 check_disable_warning -Wno-format-zero-length
6392 check_disable_warning -Wno-pointer-sign
6393 check_disable_warning -Wno-unused-const-variable
6394 check_disable_warning -Wno-bool-operation
6395
6396 check_disable_warning_headers(){
6397     warning_flag=-W${1#-Wno-}
6398     test_cflags $warning_flag && add_cflags_headers $1
6399 }
6400
6401 check_disable_warning_headers -Wno-deprecated-declarations
6402 check_disable_warning_headers -Wno-unused-variable
6403
6404 test_cc <<EOF && enable blocks_extension
6405 void (^block)(void);
6406 EOF
6407
6408 # add some linker flags
6409 check_ldflags -Wl,--warn-common
6410 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6411 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6412 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6413
6414 # add some strip flags
6415 check_stripflags -x
6416
6417 enabled neon_clobber_test &&
6418     check_ldflags -Wl,--wrap,avcodec_open2              \
6419                   -Wl,--wrap,avcodec_decode_audio4      \
6420                   -Wl,--wrap,avcodec_decode_video2      \
6421                   -Wl,--wrap,avcodec_decode_subtitle2   \
6422                   -Wl,--wrap,avcodec_encode_audio2      \
6423                   -Wl,--wrap,avcodec_encode_video2      \
6424                   -Wl,--wrap,avcodec_encode_subtitle    \
6425                   -Wl,--wrap,avcodec_send_packet        \
6426                   -Wl,--wrap,avcodec_receive_packet     \
6427                   -Wl,--wrap,avcodec_send_frame         \
6428                   -Wl,--wrap,avcodec_receive_frame      \
6429                   -Wl,--wrap,swr_convert                \
6430                   -Wl,--wrap,avresample_convert ||
6431     disable neon_clobber_test
6432
6433 enabled xmm_clobber_test &&
6434     check_ldflags -Wl,--wrap,avcodec_open2              \
6435                   -Wl,--wrap,avcodec_decode_audio4      \
6436                   -Wl,--wrap,avcodec_decode_video2      \
6437                   -Wl,--wrap,avcodec_decode_subtitle2   \
6438                   -Wl,--wrap,avcodec_encode_audio2      \
6439                   -Wl,--wrap,avcodec_encode_video2      \
6440                   -Wl,--wrap,avcodec_encode_subtitle    \
6441                   -Wl,--wrap,avcodec_send_packet        \
6442                   -Wl,--wrap,avcodec_receive_packet     \
6443                   -Wl,--wrap,avcodec_send_frame         \
6444                   -Wl,--wrap,avcodec_receive_frame      \
6445                   -Wl,--wrap,swr_convert                \
6446                   -Wl,--wrap,avresample_convert         \
6447                   -Wl,--wrap,sws_scale ||
6448     disable xmm_clobber_test
6449
6450 check_ld "cc" proper_dce <<EOF
6451 extern const int array[512];
6452 static inline int func(void) { return array[0]; }
6453 int main(void) { return 0; }
6454 EOF
6455
6456 if enabled proper_dce; then
6457     echo "X { local: *; };" > $TMPV
6458     if test_ldflags -Wl,${version_script},$TMPV; then
6459         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6460         quotes='""'
6461         test_cc <<EOF && enable symver_asm_label
6462 void ff_foo(void) __asm__ ("av_foo@VERSION");
6463 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6464 EOF
6465         test_cc <<EOF && enable symver_gnu_asm
6466 __asm__(".symver ff_foo,av_foo@VERSION");
6467 void ff_foo(void) {}
6468 EOF
6469     fi
6470 fi
6471
6472 if [ -z "$optflags" ]; then
6473     if enabled small; then
6474         optflags=$cflags_size
6475     elif enabled optimizations; then
6476         optflags=$cflags_speed
6477     else
6478         optflags=$cflags_noopt
6479     fi
6480 fi
6481
6482 if [ -z "$nvccflags" ]; then
6483     nvccflags=$nvccflags_default
6484 fi
6485
6486 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6487     nvccflags="$nvccflags -m64"
6488 else
6489     nvccflags="$nvccflags -m32"
6490 fi
6491
6492 check_optflags(){
6493     check_cflags "$@"
6494     enabled lto && check_ldflags "$@"
6495 }
6496
6497 check_optflags $optflags
6498 check_optflags -fno-math-errno
6499 check_optflags -fno-signed-zeros
6500
6501 if enabled lto; then
6502     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6503     check_cflags  -flto
6504     check_ldflags -flto $cpuflags
6505     disable inline_asm_direct_symbol_refs
6506 fi
6507
6508 enabled ftrapv && check_cflags -ftrapv
6509
6510 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6511 int x;
6512 EOF
6513
6514
6515 if enabled icc; then
6516     # Just warnings, no remarks
6517     check_cflags -w1
6518     # -wd: Disable following warnings
6519     # 144, 167, 556: -Wno-pointer-sign
6520     # 188: enumerated type mixed with another type
6521     # 1292: attribute "foo" ignored
6522     # 1419: external declaration in primary source file
6523     # 10006: ignoring unknown option -fno-signed-zeros
6524     # 10148: ignoring unknown option -Wno-parentheses
6525     # 10156: ignoring option '-W'; no argument required
6526     # 13200: No EMMS instruction before call to function
6527     # 13203: No EMMS instruction before return from function
6528     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6529     # 11030: Warning unknown option --as-needed
6530     # 10156: ignoring option '-export'; no argument required
6531     check_ldflags -wd10156,11030
6532     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6533     enable ebp_available
6534     # The test above does not test linking
6535     enabled lto && disable symver_asm_label
6536     if enabled x86_32; then
6537         icc_version=$($cc -dumpversion)
6538         test ${icc_version%%.*} -ge 11 &&
6539             check_cflags -falign-stack=maintain-16-byte ||
6540             disable aligned_stack
6541     fi
6542 elif enabled gcc; then
6543     check_optflags -fno-tree-vectorize
6544     check_cflags -Werror=format-security
6545     check_cflags -Werror=implicit-function-declaration
6546     check_cflags -Werror=missing-prototypes
6547     check_cflags -Werror=return-type
6548     check_cflags -Werror=vla
6549     check_cflags -Wformat
6550     check_cflags -fdiagnostics-color=auto
6551     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6552     if enabled x86_32; then
6553         case $target_os in
6554         *bsd*)
6555             # BSDs don't guarantee a 16 byte aligned stack, but we can
6556             # request GCC to try to maintain 16 byte alignment throughout
6557             # function calls. Library entry points that might call assembly
6558             # functions align the stack. (The parameter means 2^4 bytes.)
6559             check_cflags -mpreferred-stack-boundary=4
6560             ;;
6561         esac
6562     fi
6563 elif enabled llvm_gcc; then
6564     check_cflags -mllvm -stack-alignment=16
6565 elif enabled clang; then
6566     if enabled x86_32; then
6567         # Clang doesn't support maintaining alignment without assuming the
6568         # same alignment in every function. If 16 byte alignment would be
6569         # enabled, one would also have to either add attribute_align_arg on
6570         # every single entry point into the libraries or enable -mstackrealign
6571         # (doing stack realignment in every single function).
6572         case $target_os in
6573         mingw32|win32|*bsd*)
6574             disable aligned_stack
6575             ;;
6576         *)
6577             check_cflags -mllvm -stack-alignment=16
6578             check_cflags -mstack-alignment=16
6579             ;;
6580         esac
6581     else
6582         check_cflags -mllvm -stack-alignment=16
6583         check_cflags -mstack-alignment=16
6584     fi
6585     check_cflags -Qunused-arguments
6586     check_cflags -Werror=implicit-function-declaration
6587     check_cflags -Werror=missing-prototypes
6588     check_cflags -Werror=return-type
6589 elif enabled cparser; then
6590     add_cflags -Wno-missing-variable-declarations
6591     add_cflags -Wno-empty-statement
6592 elif enabled armcc; then
6593     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6594     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6595     # 2523: use of inline assembly is deprecated
6596     add_cflags -W${armcc_opt},--diag_suppress=2523
6597     add_cflags -W${armcc_opt},--diag_suppress=1207
6598     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6599     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6600     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6601     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6602 elif enabled pathscale; then
6603     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6604     disable inline_asm
6605 elif enabled_any msvc icl; then
6606     enabled x86_32 && disable aligned_stack
6607     enabled_all x86_32 debug && add_cflags -Oy-
6608     enabled debug && add_ldflags -debug
6609     enable pragma_deprecated
6610     if enabled icl; then
6611         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6612         # (correctly) on icl 13.x.
6613         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6614             add_cflags -Qansi-alias
6615         # Some inline asm is not compilable in debug
6616         if enabled debug; then
6617             disable ebp_available
6618             disable ebx_available
6619         fi
6620     fi
6621     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6622     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6623     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6624     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6625     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6626     # MSVC 2013 and newer can handle it fine.
6627     # If this declspec fails, force including stdlib.h before the restrict redefinition
6628     # happens in config.h.
6629     if [ $restrict_keyword != restrict ]; then
6630         test_cc <<EOF || add_cflags -FIstdlib.h
6631 __declspec($restrict_keyword) void *foo(int);
6632 EOF
6633     fi
6634     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6635     # Issue has been fixed in MSVC v19.00.24218.
6636     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6637         check_cflags -d2SSAOptimizer-
6638     # enable utf-8 source processing on VS2015 U2 and newer
6639     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6640         add_cflags -utf-8
6641 fi
6642
6643 for pfx in "" host_; do
6644     varname=${pfx%_}cc_type
6645     eval "type=\$$varname"
6646     if [ "$type" = "msvc" ]; then
6647         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6648 static inline int foo(int a) { return a; }
6649 EOF
6650     fi
6651 done
6652
6653 case $as_type in
6654     clang)
6655         add_asflags -Qunused-arguments
6656     ;;
6657 esac
6658
6659 case $ld_type in
6660     clang)
6661         check_ldflags -Qunused-arguments
6662     ;;
6663 esac
6664
6665 enable frame_thread_encoder
6666
6667 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6668
6669 check_deps $CONFIG_LIST       \
6670            $CONFIG_EXTRA      \
6671            $HAVE_LIST         \
6672            $ALL_COMPONENTS    \
6673
6674 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"
6675 enabled avresample && warn "Building with deprecated library libavresample"
6676
6677 if test $target_os = "haiku"; then
6678     disable memalign
6679     disable posix_memalign
6680 fi
6681
6682 flatten_extralibs(){
6683     unset nested_entries
6684     list_name=$1
6685     eval list=\$${1}
6686     for entry in $list; do
6687         entry_copy=$entry
6688         resolve entry_copy
6689         append nested_entries $(filter '*_extralibs' $entry_copy)
6690         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6691         eval $entry="\$flat_entries"
6692     done
6693     append $list_name "$nested_entries"
6694
6695     resolve nested_entries
6696     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6697         flatten_extralibs $list_name
6698     fi
6699 }
6700
6701 flatten_extralibs_wrapper(){
6702     list_name=$1
6703     flatten_extralibs $list_name
6704     unique $list_name
6705     resolve $list_name
6706     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6707     eval printf \''%s'\' \""\$$list_name"\"
6708 }
6709
6710 for linkunit in $LIBRARY_LIST; do
6711     unset current_extralibs
6712     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6713     for comp in ${components}; do
6714         enabled $comp || continue
6715         comp_extralibs="${comp}_extralibs"
6716         append current_extralibs $comp_extralibs
6717     done
6718     eval prepend ${linkunit}_extralibs $current_extralibs
6719 done
6720
6721 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6722     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6723 done
6724
6725 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6726
6727 for thread in $THREADS_LIST; do
6728     if enabled $thread; then
6729         test -n "$thread_type" &&
6730             die "ERROR: Only one thread type must be selected." ||
6731             thread_type="$thread"
6732     fi
6733 done
6734
6735 if disabled stdatomic; then
6736     if enabled atomics_gcc; then
6737         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6738     elif enabled atomics_win32; then
6739         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6740     elif enabled atomics_suncc; then
6741         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6742     elif enabled pthreads; then
6743         add_compat atomics/pthread/stdatomic.o
6744         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6745     else
6746         enabled threads && die "Threading is enabled, but no atomics are available"
6747         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6748     fi
6749 fi
6750
6751 # Check if requested libraries were found.
6752 for lib in $AUTODETECT_LIBS; do
6753     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6754 done
6755
6756 enabled zlib && add_cppflags -DZLIB_CONST
6757
6758 # conditional library dependencies, in linking order
6759 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6760 enabled afir_filter         && prepend avfilter_deps "avcodec"
6761 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6762 enabled aresample_filter    && prepend avfilter_deps "swresample"
6763 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6764 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6765 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6766 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6767 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6768 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6769 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6770 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6771 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6772 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6773 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6774 enabled pan_filter          && prepend avfilter_deps "swresample"
6775 enabled pp_filter           && prepend avfilter_deps "postproc"
6776 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6777 enabled resample_filter && prepend avfilter_deps "avresample"
6778 enabled sab_filter          && prepend avfilter_deps "swscale"
6779 enabled scale_filter    && prepend avfilter_deps "swscale"
6780 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6781 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6782 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6783 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6784 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6785 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6786 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6787 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6788 enabled spp_filter          && prepend avfilter_deps "avcodec"
6789 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6790 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6791 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6792
6793 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6794
6795 #FIXME
6796 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6797
6798 enabled opus_decoder    && prepend avcodec_deps "swresample"
6799
6800 expand_deps(){
6801     lib_deps=${1}_deps
6802     eval "deps=\$$lib_deps"
6803     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6804     unique $lib_deps
6805 }
6806
6807 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6808 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6809
6810 map 'expand_deps $v' $LIBRARY_LIST
6811
6812 if test "$quiet" != "yes"; then
6813
6814 echo "install prefix            $prefix"
6815 echo "source path               $source_path"
6816 echo "C compiler                $cc"
6817 echo "C library                 $libc_type"
6818 if test "$host_cc" != "$cc"; then
6819     echo "host C compiler           $host_cc"
6820     echo "host C library            $host_libc_type"
6821 fi
6822 echo "ARCH                      $arch ($cpu)"
6823 if test "$build_suffix" != ""; then
6824     echo "build suffix              $build_suffix"
6825 fi
6826 if test "$progs_suffix" != ""; then
6827     echo "progs suffix              $progs_suffix"
6828 fi
6829 if test "$extra_version" != ""; then
6830     echo "version string suffix     $extra_version"
6831 fi
6832 echo "big-endian                ${bigendian-no}"
6833 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6834 if enabled x86; then
6835     echo "standalone assembly       ${x86asm-no}"
6836     echo "x86 assembler             ${x86asmexe}"
6837     echo "MMX enabled               ${mmx-no}"
6838     echo "MMXEXT enabled            ${mmxext-no}"
6839     echo "3DNow! enabled            ${amd3dnow-no}"
6840     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6841     echo "SSE enabled               ${sse-no}"
6842     echo "SSSE3 enabled             ${ssse3-no}"
6843     echo "AESNI enabled             ${aesni-no}"
6844     echo "AVX enabled               ${avx-no}"
6845     echo "AVX2 enabled              ${avx2-no}"
6846     echo "AVX-512 enabled           ${avx512-no}"
6847     echo "XOP enabled               ${xop-no}"
6848     echo "FMA3 enabled              ${fma3-no}"
6849     echo "FMA4 enabled              ${fma4-no}"
6850     echo "i686 features enabled     ${i686-no}"
6851     echo "CMOV is fast              ${fast_cmov-no}"
6852     echo "EBX available             ${ebx_available-no}"
6853     echo "EBP available             ${ebp_available-no}"
6854 fi
6855 if enabled aarch64; then
6856     echo "NEON enabled              ${neon-no}"
6857     echo "VFP enabled               ${vfp-no}"
6858 fi
6859 if enabled arm; then
6860     echo "ARMv5TE enabled           ${armv5te-no}"
6861     echo "ARMv6 enabled             ${armv6-no}"
6862     echo "ARMv6T2 enabled           ${armv6t2-no}"
6863     echo "VFP enabled               ${vfp-no}"
6864     echo "NEON enabled              ${neon-no}"
6865     echo "THUMB enabled             ${thumb-no}"
6866 fi
6867 if enabled mips; then
6868     echo "MIPS FPU enabled          ${mipsfpu-no}"
6869     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6870     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6871     echo "MIPS MSA enabled          ${msa-no}"
6872     echo "LOONGSON MMI enabled      ${mmi-no}"
6873 fi
6874 if enabled ppc; then
6875     echo "AltiVec enabled           ${altivec-no}"
6876     echo "VSX enabled               ${vsx-no}"
6877     echo "POWER8 enabled            ${power8-no}"
6878     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6879     echo "dcbzl available           ${dcbzl-no}"
6880 fi
6881 echo "debug symbols             ${debug-no}"
6882 echo "strip symbols             ${stripping-no}"
6883 echo "optimize for size         ${small-no}"
6884 echo "optimizations             ${optimizations-no}"
6885 echo "static                    ${static-no}"
6886 echo "shared                    ${shared-no}"
6887 echo "postprocessing support    ${postproc-no}"
6888 echo "network support           ${network-no}"
6889 echo "threading support         ${thread_type-no}"
6890 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6891 echo "texi2html enabled         ${texi2html-no}"
6892 echo "perl enabled              ${perl-no}"
6893 echo "pod2man enabled           ${pod2man-no}"
6894 echo "makeinfo enabled          ${makeinfo-no}"
6895 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6896 test -n "$random_seed" &&
6897     echo "random seed               ${random_seed}"
6898 echo
6899
6900 echo "External libraries:"
6901 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6902 echo
6903
6904 echo "External libraries providing hardware acceleration:"
6905 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6906 echo
6907
6908 echo "Libraries:"
6909 print_enabled '' $LIBRARY_LIST | print_in_columns
6910 echo
6911
6912 echo "Programs:"
6913 print_enabled '' $PROGRAM_LIST | print_in_columns
6914 echo
6915
6916 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6917     echo "Enabled ${type}s:"
6918     eval list=\$$(toupper $type)_LIST
6919     print_enabled '_*' $list | print_in_columns
6920     echo
6921 done
6922
6923 if test -n "$ignore_tests"; then
6924     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6925     echo "Ignored FATE tests:"
6926     echo $ignore_tests | print_in_columns
6927     echo
6928 fi
6929
6930 echo "License: $license"
6931
6932 fi # test "$quiet" != "yes"
6933
6934 if test -n "$WARNINGS"; then
6935     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6936     enabled fatal_warnings && exit 1
6937 fi
6938
6939 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6940
6941 esc(){
6942     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6943 }
6944
6945 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6946
6947 enabled stripping || strip="echo skipping strip"
6948 enabled stripping || striptype=""
6949
6950 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6951
6952 cat > ffbuild/config.mak <<EOF
6953 # Automatically generated by configure - do not modify!
6954 ifndef FFMPEG_CONFIG_MAK
6955 FFMPEG_CONFIG_MAK=1
6956 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6957 prefix=$prefix
6958 LIBDIR=\$(DESTDIR)$libdir
6959 SHLIBDIR=\$(DESTDIR)$shlibdir
6960 INCDIR=\$(DESTDIR)$incdir
6961 BINDIR=\$(DESTDIR)$bindir
6962 DATADIR=\$(DESTDIR)$datadir
6963 DOCDIR=\$(DESTDIR)$docdir
6964 MANDIR=\$(DESTDIR)$mandir
6965 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6966 INSTALL_NAME_DIR=$install_name_dir
6967 SRC_PATH=$source_path
6968 SRC_LINK=$source_link
6969 ifndef MAIN_MAKEFILE
6970 SRC_PATH:=\$(SRC_PATH:.%=..%)
6971 endif
6972 CC_IDENT=$cc_ident
6973 ARCH=$arch
6974 INTRINSICS=$intrinsics
6975 EXTERN_PREFIX=$extern_prefix
6976 CC=$cc
6977 CXX=$cxx
6978 AS=$as
6979 OBJCC=$objcc
6980 LD=$ld
6981 DEPCC=$dep_cc
6982 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6983 DEPAS=$as
6984 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6985 X86ASM=$x86asmexe
6986 DEPX86ASM=$x86asmexe
6987 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6988 AR=$ar
6989 ARFLAGS=$arflags
6990 AR_O=$ar_o
6991 AR_CMD=$ar
6992 NM_CMD=$nm
6993 RANLIB=$ranlib
6994 STRIP=$strip
6995 STRIPTYPE=$striptype
6996 NVCC=$nvcc
6997 CP=cp -p
6998 LN_S=$ln_s
6999 CPPFLAGS=$CPPFLAGS
7000 CFLAGS=$CFLAGS
7001 CXXFLAGS=$CXXFLAGS
7002 OBJCFLAGS=$OBJCFLAGS
7003 ASFLAGS=$ASFLAGS
7004 NVCCFLAGS=$nvccflags
7005 AS_C=$AS_C
7006 AS_O=$AS_O
7007 OBJCC_C=$OBJCC_C
7008 OBJCC_E=$OBJCC_E
7009 OBJCC_O=$OBJCC_O
7010 CC_C=$CC_C
7011 CC_E=$CC_E
7012 CC_O=$CC_O
7013 CXX_C=$CXX_C
7014 CXX_O=$CXX_O
7015 NVCC_C=$NVCC_C
7016 NVCC_O=$NVCC_O
7017 LD_O=$LD_O
7018 X86ASM_O=$X86ASM_O
7019 LD_LIB=$LD_LIB
7020 LD_PATH=$LD_PATH
7021 DLLTOOL=$dlltool
7022 WINDRES=$windres
7023 DEPWINDRES=$dep_cc
7024 DOXYGEN=$doxygen
7025 LDFLAGS=$LDFLAGS
7026 LDEXEFLAGS=$LDEXEFLAGS
7027 LDSOFLAGS=$LDSOFLAGS
7028 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7029 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7030 X86ASMFLAGS=$X86ASMFLAGS
7031 BUILDSUF=$build_suffix
7032 PROGSSUF=$progs_suffix
7033 FULLNAME=$FULLNAME
7034 LIBPREF=$LIBPREF
7035 LIBSUF=$LIBSUF
7036 LIBNAME=$LIBNAME
7037 SLIBPREF=$SLIBPREF
7038 SLIBSUF=$SLIBSUF
7039 EXESUF=$EXESUF
7040 EXTRA_VERSION=$extra_version
7041 CCDEP=$CCDEP
7042 CXXDEP=$CXXDEP
7043 CCDEP_FLAGS=$CCDEP_FLAGS
7044 ASDEP=$ASDEP
7045 ASDEP_FLAGS=$ASDEP_FLAGS
7046 X86ASMDEP=$X86ASMDEP
7047 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7048 CC_DEPFLAGS=$CC_DEPFLAGS
7049 AS_DEPFLAGS=$AS_DEPFLAGS
7050 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7051 HOSTCC=$host_cc
7052 HOSTLD=$host_ld
7053 HOSTCFLAGS=$host_cflags
7054 HOSTCPPFLAGS=$host_cppflags
7055 HOSTEXESUF=$HOSTEXESUF
7056 HOSTLDFLAGS=$host_ldflags
7057 HOSTEXTRALIBS=$host_extralibs
7058 DEPHOSTCC=$host_cc
7059 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7060 HOSTCCDEP=$HOSTCCDEP
7061 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7062 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7063 HOSTCC_C=$HOSTCC_C
7064 HOSTCC_O=$HOSTCC_O
7065 HOSTLD_O=$HOSTLD_O
7066 TARGET_EXEC=$target_exec $target_exec_args
7067 TARGET_PATH=$target_path
7068 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7069 CFLAGS-ffplay=${sdl2_cflags}
7070 CFLAGS_HEADERS=$CFLAGS_HEADERS
7071 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7072 EXTRALIBS=$extralibs
7073 COMPAT_OBJS=$compat_objs
7074 INSTALL=$install
7075 LIBTARGET=${LIBTARGET}
7076 SLIBNAME=${SLIBNAME}
7077 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7078 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7079 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7080 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7081 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7082 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7083 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7084 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7085 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7086 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7087 NOREDZONE_FLAGS=$noredzone_flags
7088 LIBFUZZER_PATH=$libfuzzer_path
7089 IGNORE_TESTS=$ignore_tests
7090 EOF
7091
7092 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7093
7094 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7095     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7096 done
7097
7098 cat > $TMPH <<EOF
7099 /* Automatically generated by configure - do not modify! */
7100 #ifndef FFMPEG_CONFIG_H
7101 #define FFMPEG_CONFIG_H
7102 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7103 #define FFMPEG_LICENSE "$(c_escape $license)"
7104 #define CONFIG_THIS_YEAR 2018
7105 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7106 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7107 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7108 #define av_restrict $restrict_keyword
7109 #define EXTERN_PREFIX "${extern_prefix}"
7110 #define EXTERN_ASM ${extern_prefix}
7111 #define BUILDSUF "$build_suffix"
7112 #define SLIBSUF "$SLIBSUF"
7113 #define HAVE_MMX2 HAVE_MMXEXT
7114 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7115 EOF
7116
7117 test -n "$assert_level" &&
7118     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7119
7120 test -n "$malloc_prefix" &&
7121     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7122
7123 if enabled x86asm; then
7124     append config_files $TMPASM
7125     cat > $TMPASM <<EOF
7126 ; Automatically generated by configure - do not modify!
7127 EOF
7128 fi
7129
7130 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7131
7132
7133 mkdir -p doc
7134 mkdir -p tests
7135 mkdir -p tests/api
7136 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7137
7138 print_config ARCH_   "$config_files" $ARCH_LIST
7139 print_config HAVE_   "$config_files" $HAVE_LIST
7140 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7141                                      $CONFIG_EXTRA      \
7142                                      $ALL_COMPONENTS    \
7143
7144 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7145 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7146
7147 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7148 cp_if_changed $TMPH config.h
7149 touch ffbuild/.config
7150
7151 enabled x86asm && cp_if_changed $TMPASM config.asm
7152
7153 cat > $TMPH <<EOF
7154 /* Generated by ffmpeg configure */
7155 #ifndef AVUTIL_AVCONFIG_H
7156 #define AVUTIL_AVCONFIG_H
7157 EOF
7158
7159 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7160
7161 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7162
7163 cp_if_changed $TMPH libavutil/avconfig.h
7164
7165 full_filter_name(){
7166     sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_$1;/\1_$1/p" $source_path/libavfilter/allfilters.c
7167 }
7168
7169 # generate the lists of enabled components
7170 print_enabled_components(){
7171     file=$1
7172     struct_name=$2
7173     name=$3
7174     shift 3
7175     echo "static const $struct_name * const $name[] = {" > $TMPH
7176     for c in $*; do
7177         if enabled $c; then
7178             case $name in
7179                 filter_list)
7180                     c=$(full_filter_name $(remove_suffix _filter $c))
7181                 ;;
7182                 indev_list)
7183                     c=$(add_suffix _demuxer $(remove_suffix _indev $c))
7184                 ;;
7185                 outdev_list)
7186                     c=$(add_suffix _muxer $(remove_suffix _outdev $c))
7187                 ;;
7188             esac
7189             printf "    &ff_%s,\n" $c >> $TMPH
7190         fi
7191     done
7192     if [ "$name" = "filter_list" ]; then
7193         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7194             printf "    &ff_%s,\n" $c >> $TMPH
7195         done
7196     fi
7197     echo "    NULL };" >> $TMPH
7198     cp_if_changed $TMPH $file
7199 }
7200
7201 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7202 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7203 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7204 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7205 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7206 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7207 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7208 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7209 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7210
7211 # Settings for pkg-config files
7212
7213 cat > $TMPH <<EOF
7214 # Automatically generated by configure - do not modify!
7215 shared=$shared
7216 build_suffix=$build_suffix
7217 prefix=$prefix
7218 libdir=$libdir
7219 incdir=$incdir
7220 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7221 source_path=${source_path}
7222 LIBPREF=${LIBPREF}
7223 LIBSUF=${LIBSUF}
7224 extralibs_avutil="$avutil_extralibs"
7225 extralibs_avcodec="$avcodec_extralibs"
7226 extralibs_avformat="$avformat_extralibs"
7227 extralibs_avdevice="$avdevice_extralibs"
7228 extralibs_avfilter="$avfilter_extralibs"
7229 extralibs_avresample="$avresample_extralibs"
7230 extralibs_postproc="$postproc_extralibs"
7231 extralibs_swscale="$swscale_extralibs"
7232 extralibs_swresample="$swresample_extralibs"
7233 EOF
7234
7235 for lib in $LIBRARY_LIST; do
7236     lib_deps="$(eval echo \$${lib}_deps)"
7237     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7238 done
7239
7240 cp_if_changed $TMPH ffbuild/config.sh