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-libass          enable libass subtitles rendering,
 221                            needed for subtitles and ass filter [no]
 222   --enable-libbluray       enable BluRay reading using libbluray [no]
 223   --enable-libbs2b         enable bs2b DSP library [no]
 224   --enable-libcaca         enable textual display using libcaca [no]
 225   --enable-libcelt         enable CELT decoding via libcelt [no]
 226   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 227   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 228                            and libraw1394 [no]
 229   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 230   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 231   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 232   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 233   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 234   --enable-libgme          enable Game Music Emu via libgme [no]
 235   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 236   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 237   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 238   --enable-libjack         enable JACK audio sound server [no]
 239   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 240   --enable-libmodplug      enable ModPlug via libmodplug [no]
 241   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 242   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 243   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 244   --enable-libopencv       enable video filtering via libopencv [no]
 245   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 246   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 247   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 248   --enable-libopus         enable Opus de/encoding via libopus [no]
 249   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 250   --enable-librsvg         enable SVG rasterization via librsvg [no]
 251   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 252   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 253   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 254   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 255   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 256   --enable-libsoxr         enable Include libsoxr resampling [no]
 257   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 258   --enable-libssh          enable SFTP protocol via libssh [no]
 259   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 260   --enable-libtheora       enable Theora encoding via libtheora [no]
 261   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 262                            if openssl or gnutls is not used [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --enable-lv2             enable LV2 audio filtering [no]
 287   --disable-lzma           disable lzma [autodetect]
 288   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 289   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 290   --enable-mediacodec      enable Android MediaCodec support [no]
 291   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 292   --enable-openal          enable OpenAL 1.1 capture support [no]
 293   --enable-opencl          enable OpenCL processing [no]
 294   --enable-opengl          enable OpenGL rendering [no]
 295   --enable-openssl         enable openssl, needed for https support
 296                            if gnutls or libtls is not used [no]
 297   --disable-sndio          disable sndio support [autodetect]
 298   --disable-schannel       disable SChannel SSP, needed for TLS support on
 299                            Windows if openssl and gnutls are not used [autodetect]
 300   --disable-sdl2           disable sdl2 [autodetect]
 301   --disable-securetransport disable Secure Transport, needed for TLS support
 302                            on OSX if openssl and gnutls are not used [autodetect]
 303   --disable-xlib           disable xlib [autodetect]
 304   --disable-zlib           disable zlib [autodetect]
 305
 306   The following libraries provide various hardware acceleration features:
 307   --disable-amf            disable AMF video encoding code [autodetect]
 308   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 309   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 310   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 311   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 312   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 313   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 314   --enable-libdrm          enable DRM code (Linux) [no]
 315   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 316   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 317   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 318   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 319   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 320   --enable-omx             enable OpenMAX IL code [no]
 321   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 322   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 323   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 324   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 325   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 326   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 327
 328 Toolchain options:
 329   --arch=ARCH              select architecture [$arch]
 330   --cpu=CPU                select the minimum required CPU (affects
 331                            instruction selection, may crash on older CPUs)
 332   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 333   --progs-suffix=SUFFIX    program name suffix []
 334   --enable-cross-compile   assume a cross-compiler is used
 335   --sysroot=PATH           root of cross-build tree
 336   --sysinclude=PATH        location of cross-build system headers
 337   --target-os=OS           compiler targets OS [$target_os]
 338   --target-exec=CMD        command to run executables on target
 339   --target-path=DIR        path to view of build directory on target
 340   --target-samples=DIR     path to samples directory on target
 341   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 342   --toolchain=NAME         set tool defaults according to NAME
 343   --nm=NM                  use nm tool NM [$nm_default]
 344   --ar=AR                  use archive tool AR [$ar_default]
 345   --as=AS                  use assembler AS [$as_default]
 346   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 347   --strip=STRIP            use strip tool STRIP [$strip_default]
 348   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 349   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 350   --cc=CC                  use C compiler CC [$cc_default]
 351   --cxx=CXX                use C compiler CXX [$cxx_default]
 352   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 353   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 354   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 355   --ld=LD                  use linker LD [$ld_default]
 356   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 357   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 358   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 359   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 360   --host-cc=HOSTCC         use host C compiler HOSTCC
 361   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 362   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 363   --host-ld=HOSTLD         use host linker HOSTLD
 364   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 365   --host-libs=HLIBS        use libs HLIBS when linking for host
 366   --host-os=OS             compiler host OS [$target_os]
 367   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 368   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 369   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 370   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 371   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 372   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 373   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 374   --extra-version=STRING   version string suffix []
 375   --optflags=OPTFLAGS      override optimization-related compiler flags
 376   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 377   --build-suffix=SUFFIX    library name suffix []
 378   --enable-pic             build position-independent code
 379   --enable-thumb           compile for Thumb instruction set
 380   --enable-lto             use link-time optimization
 381   --env="ENV=override"     override the environment variables
 382
 383 Advanced options (experts only):
 384   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 385   --custom-allocator=NAME  use a supported custom allocator
 386   --disable-symver         disable symbol versioning
 387   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 388   --disable-safe-bitstream-reader
 389                            disable buffer boundary checking in bitreaders
 390                            (faster, but may crash)
 391   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 392
 393 Optimization options (experts only):
 394   --disable-asm            disable all assembly optimizations
 395   --disable-altivec        disable AltiVec optimizations
 396   --disable-vsx            disable VSX optimizations
 397   --disable-power8         disable POWER8 optimizations
 398   --disable-amd3dnow       disable 3DNow! optimizations
 399   --disable-amd3dnowext    disable 3DNow! extended optimizations
 400   --disable-mmx            disable MMX optimizations
 401   --disable-mmxext         disable MMXEXT optimizations
 402   --disable-sse            disable SSE optimizations
 403   --disable-sse2           disable SSE2 optimizations
 404   --disable-sse3           disable SSE3 optimizations
 405   --disable-ssse3          disable SSSE3 optimizations
 406   --disable-sse4           disable SSE4 optimizations
 407   --disable-sse42          disable SSE4.2 optimizations
 408   --disable-avx            disable AVX optimizations
 409   --disable-xop            disable XOP optimizations
 410   --disable-fma3           disable FMA3 optimizations
 411   --disable-fma4           disable FMA4 optimizations
 412   --disable-avx2           disable AVX2 optimizations
 413   --disable-avx512         disable AVX-512 optimizations
 414   --disable-aesni          disable AESNI optimizations
 415   --disable-armv5te        disable armv5te optimizations
 416   --disable-armv6          disable armv6 optimizations
 417   --disable-armv6t2        disable armv6t2 optimizations
 418   --disable-vfp            disable VFP optimizations
 419   --disable-neon           disable NEON optimizations
 420   --disable-inline-asm     disable use of inline assembly
 421   --disable-x86asm         disable use of standalone x86 assembly
 422   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 423   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 424   --disable-msa            disable MSA optimizations
 425   --disable-mipsfpu        disable floating point MIPS optimizations
 426   --disable-mmi            disable Loongson SIMD optimizations
 427   --disable-fast-unaligned consider unaligned accesses slow
 428
 429 Developer options (useful when working on FFmpeg itself):
 430   --disable-debug          disable debugging symbols
 431   --enable-debug=LEVEL     set the debug level [$debuglevel]
 432   --disable-optimizations  disable compiler optimizations
 433   --enable-extra-warnings  enable more compiler warnings
 434   --disable-stripping      disable stripping of executables and shared libraries
 435   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 436                            2 causes a slowdown at runtime.
 437   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 438   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 439                            leaks and errors, using the specified valgrind binary.
 440                            Cannot be combined with --target-exec
 441   --enable-ftrapv          Trap arithmetic overflows
 442   --samples=PATH           location of test samples for FATE, if not set use
 443                            \$FATE_SAMPLES at make invocation time.
 444   --enable-neon-clobber-test check NEON registers for clobbering (should be
 445                            used only for debugging purposes)
 446   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 447                            should be used only for debugging purposes)
 448   --enable-random          randomly enable/disable components
 449   --disable-random
 450   --enable-random=LIST     randomly enable/disable specific components or
 451   --disable-random=LIST    component groups. LIST is a comma-separated list
 452                            of NAME[:PROB] entries where NAME is a component
 453                            (group) and PROB the probability associated with
 454                            NAME (default 0.5).
 455   --random-seed=VALUE      seed value for --enable/disable-random
 456   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 457                            (only applies to --disable-optimizations builds)
 458   --enable-osfuzz          Enable building fuzzer tool
 459   --libfuzzer=PATH         path to libfuzzer
 460   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 461                            in the name) of tests whose result is ignored
 462   --enable-linux-perf      enable Linux Performance Monitor API
 463
 464 NOTE: Object files are built at the place where configure is launched.
 465 EOF
 466   exit 0
 467 }
 468
 469 if test -t 1 && which tput >/dev/null 2>&1; then
 470     ncolors=$(tput colors)
 471     if test -n "$ncolors" && test $ncolors -ge 8; then
 472         bold_color=$(tput bold)
 473         warn_color=$(tput setaf 3)
 474         error_color=$(tput setaf 1)
 475         reset_color=$(tput sgr0)
 476     fi
 477     # 72 used instead of 80 since that's the default of pr
 478     ncols=$(tput cols)
 479 fi
 480 : ${ncols:=72}
 481
 482 log(){
 483     echo "$@" >> $logfile
 484 }
 485
 486 log_file(){
 487     log BEGIN $1
 488     pr -n -t $1 >> $logfile
 489     log END $1
 490 }
 491
 492 warn(){
 493     log "WARNING: $*"
 494     WARNINGS="${WARNINGS}WARNING: $*\n"
 495 }
 496
 497 die(){
 498     log "$@"
 499     echo "$error_color$bold_color$@$reset_color"
 500     cat <<EOF
 501
 502 If you think configure made a mistake, make sure you are using the latest
 503 version from Git.  If the latest version fails, report the problem to the
 504 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 505 EOF
 506     if disabled logging; then
 507         cat <<EOF
 508 Rerun configure with logging enabled (do not use --disable-logging), and
 509 include the log this produces with your report.
 510 EOF
 511     else
 512         cat <<EOF
 513 Include the log file "$logfile" produced by configure as this will help
 514 solve the problem.
 515 EOF
 516     fi
 517     exit 1
 518 }
 519
 520 # Avoid locale weirdness, besides we really just want to translate ASCII.
 521 toupper(){
 522     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 523 }
 524
 525 tolower(){
 526     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 527 }
 528
 529 c_escape(){
 530     echo "$*" | sed 's/["\\]/\\\0/g'
 531 }
 532
 533 sh_quote(){
 534     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 535     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 536     echo "$v"
 537 }
 538
 539 cleanws(){
 540     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 541 }
 542
 543 filter(){
 544     pat=$1
 545     shift
 546     for v; do
 547         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 548     done
 549 }
 550
 551 filter_out(){
 552     pat=$1
 553     shift
 554     for v; do
 555         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 556     done
 557 }
 558
 559 map(){
 560     m=$1
 561     shift
 562     for v; do eval $m; done
 563 }
 564
 565 add_suffix(){
 566     suffix=$1
 567     shift
 568     for v; do echo ${v}${suffix}; done
 569 }
 570
 571 set_all(){
 572     value=$1
 573     shift
 574     for var in $*; do
 575         eval $var=$value
 576     done
 577 }
 578
 579 set_weak(){
 580     value=$1
 581     shift
 582     for var; do
 583         eval : \${$var:=$value}
 584     done
 585 }
 586
 587 sanitize_var_name(){
 588     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 589 }
 590
 591 set_sanitized(){
 592     var=$1
 593     shift
 594     eval $(sanitize_var_name "$var")='$*'
 595 }
 596
 597 get_sanitized(){
 598     eval echo \$$(sanitize_var_name "$1")
 599 }
 600
 601 pushvar(){
 602     for pvar in $*; do
 603         eval level=\${${pvar}_level:=0}
 604         eval ${pvar}_${level}="\$$pvar"
 605         eval ${pvar}_level=$(($level+1))
 606     done
 607 }
 608
 609 popvar(){
 610     for pvar in $*; do
 611         eval level=\${${pvar}_level:-0}
 612         test $level = 0 && continue
 613         eval level=$(($level-1))
 614         eval $pvar="\${${pvar}_${level}}"
 615         eval ${pvar}_level=$level
 616         eval unset ${pvar}_${level}
 617     done
 618 }
 619
 620 request(){
 621     for var in $*; do
 622         eval ${var}_requested=yes
 623         eval $var=
 624     done
 625 }
 626
 627 enable(){
 628     set_all yes $*
 629 }
 630
 631 disable(){
 632     set_all no $*
 633 }
 634
 635 enable_weak(){
 636     set_weak yes $*
 637 }
 638
 639 disable_weak(){
 640     set_weak no $*
 641 }
 642
 643 enable_sanitized(){
 644     for var; do
 645         enable $(sanitize_var_name $var)
 646     done
 647 }
 648
 649 disable_sanitized(){
 650     for var; do
 651         disable $(sanitize_var_name $var)
 652     done
 653 }
 654
 655 do_enable_deep(){
 656     for var; do
 657         enabled $var && continue
 658         eval sel="\$${var}_select"
 659         eval sgs="\$${var}_suggest"
 660         pushvar var sgs
 661         enable_deep $sel
 662         popvar sgs
 663         enable_deep_weak $sgs
 664         popvar var
 665     done
 666 }
 667
 668 enable_deep(){
 669     do_enable_deep $*
 670     enable $*
 671 }
 672
 673 enable_deep_weak(){
 674     for var; do
 675         disabled $var && continue
 676         pushvar var
 677         do_enable_deep $var
 678         popvar var
 679         enable_weak $var
 680     done
 681 }
 682
 683 requested(){
 684     test "${1#!}" = "$1" && op="=" || op="!="
 685     eval test "x\$${1#!}_requested" $op "xyes"
 686 }
 687
 688 enabled(){
 689     test "${1#!}" = "$1" && op="=" || op="!="
 690     eval test "x\$${1#!}" $op "xyes"
 691 }
 692
 693 disabled(){
 694     test "${1#!}" = "$1" && op="=" || op="!="
 695     eval test "x\$${1#!}" $op "xno"
 696 }
 697
 698 enabled_all(){
 699     for opt; do
 700         enabled $opt || return 1
 701     done
 702 }
 703
 704 disabled_all(){
 705     for opt; do
 706         disabled $opt || return 1
 707     done
 708 }
 709
 710 enabled_any(){
 711     for opt; do
 712         enabled $opt && return 0
 713     done
 714 }
 715
 716 disabled_any(){
 717     for opt; do
 718         disabled $opt && return 0
 719     done
 720     return 1
 721 }
 722
 723 set_default(){
 724     for opt; do
 725         eval : \${$opt:=\$${opt}_default}
 726     done
 727 }
 728
 729 is_in(){
 730     value=$1
 731     shift
 732     for var in $*; do
 733         [ $var = $value ] && return 0
 734     done
 735     return 1
 736 }
 737
 738 check_deps(){
 739     for cfg; do
 740         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 741         disabled ${cfg}_checking && continue
 742         enable ${cfg}_checking
 743
 744         eval dep_all="\$${cfg}_deps"
 745         eval dep_any="\$${cfg}_deps_any"
 746         eval dep_con="\$${cfg}_conflict"
 747         eval dep_sel="\$${cfg}_select"
 748         eval dep_sgs="\$${cfg}_suggest"
 749         eval dep_ifa="\$${cfg}_if"
 750         eval dep_ifn="\$${cfg}_if_any"
 751
 752         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 753         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 754         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 755
 756         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 757         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 758         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 759         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 760         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 761         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 762
 763         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 764
 765         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 766             # filter out library deps, these do not belong in extralibs
 767             is_in $dep $LIBRARY_LIST && continue
 768             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 769         done
 770
 771         disable ${cfg}_checking
 772     done
 773 }
 774
 775 print_config(){
 776     pfx=$1
 777     files=$2
 778     shift 2
 779     map 'eval echo "$v \${$v:-no}"' "$@" |
 780     awk "BEGIN { split(\"$files\", files) }
 781         {
 782             c = \"$pfx\" toupper(\$1);
 783             v = \$2;
 784             sub(/yes/, 1, v);
 785             sub(/no/,  0, v);
 786             for (f in files) {
 787                 file = files[f];
 788                 if (file ~ /\\.h\$/) {
 789                     printf(\"#define %s %d\\n\", c, v) >>file;
 790                 } else if (file ~ /\\.asm\$/) {
 791                     printf(\"%%define %s %d\\n\", c, v) >>file;
 792                 } else if (file ~ /\\.mak\$/) {
 793                     n = -v ? \"\" : \"!\";
 794                     printf(\"%s%s=yes\\n\", n, c) >>file;
 795                 } else if (file ~ /\\.texi\$/) {
 796                     pre = -v ? \"\" : \"@c \";
 797                     yesno = \$2;
 798                     c2 = tolower(c);
 799                     gsub(/_/, \"-\", c2);
 800                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 801                 }
 802             }
 803         }"
 804 }
 805
 806 print_enabled(){
 807     suf=$1
 808     shift
 809     for v; do
 810         enabled $v && printf "%s\n" ${v%$suf}
 811     done
 812 }
 813
 814 append(){
 815     var=$1
 816     shift
 817     eval "$var=\"\$$var $*\""
 818 }
 819
 820 prepend(){
 821     var=$1
 822     shift
 823     eval "$var=\"$* \$$var\""
 824 }
 825
 826 unique(){
 827     var=$1
 828     uniq_list=""
 829     for tok in $(eval echo \$$var); do
 830         uniq_list="$(filter_out $tok $uniq_list) $tok"
 831     done
 832     eval "$var=\"${uniq_list}\""
 833 }
 834
 835 resolve(){
 836     var=$1
 837     tmpvar=
 838     for entry in $(eval echo \$$var); do
 839         tmpvar="$tmpvar $(eval echo \$${entry})"
 840     done
 841     eval "$var=\"${tmpvar}\""
 842 }
 843
 844 add_cppflags(){
 845     append CPPFLAGS "$@"
 846 }
 847
 848 add_cflags(){
 849     append CFLAGS $($cflags_filter "$@")
 850 }
 851
 852 add_cflags_headers(){
 853     append CFLAGS_HEADERS $($cflags_filter "$@")
 854 }
 855
 856 add_cxxflags(){
 857     append CXXFLAGS $($cflags_filter "$@")
 858 }
 859
 860 add_asflags(){
 861     append ASFLAGS $($asflags_filter "$@")
 862 }
 863
 864 add_objcflags(){
 865     append OBJCFLAGS $($objcflags_filter "$@")
 866 }
 867
 868 add_ldflags(){
 869     append LDFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldexeflags(){
 873     append LDEXEFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_ldsoflags(){
 877     append LDSOFLAGS $($ldflags_filter "$@")
 878 }
 879
 880 add_stripflags(){
 881     append ASMSTRIPFLAGS "$@"
 882 }
 883
 884 add_extralibs(){
 885     prepend extralibs $($ldflags_filter "$@")
 886 }
 887
 888 add_host_cppflags(){
 889     append host_cppflags "$@"
 890 }
 891
 892 add_host_cflags(){
 893     append host_cflags $($host_cflags_filter "$@")
 894 }
 895
 896 add_host_ldflags(){
 897     append host_ldflags $($host_ldflags_filter "$@")
 898 }
 899
 900 add_compat(){
 901     append compat_objs $1
 902     shift
 903     map 'add_cppflags -D$v' "$@"
 904 }
 905
 906 check_cmd(){
 907     log "$@"
 908     "$@" >> $logfile 2>&1
 909 }
 910
 911 check_stat(){
 912     log check_stat "$@"
 913     stat "$1" >> $logfile 2>&1
 914 }
 915
 916 cc_o(){
 917     eval printf '%s\\n' $CC_O
 918 }
 919
 920 cc_e(){
 921     eval printf '%s\\n' $CC_E
 922 }
 923
 924 check_cc(){
 925     log check_cc "$@"
 926     cat > $TMPC
 927     log_file $TMPC
 928     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 929 }
 930
 931 check_cxx(){
 932     log check_cxx "$@"
 933     cat > $TMPCPP
 934     log_file $TMPCPP
 935     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 936 }
 937
 938 check_objcc(){
 939     log check_objcc "$@"
 940     cat > $TMPM
 941     log_file $TMPM
 942     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 943 }
 944
 945 check_cpp(){
 946     log check_cpp "$@"
 947     cat > $TMPC
 948     log_file $TMPC
 949     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 950 }
 951
 952 as_o(){
 953     eval printf '%s\\n' $AS_O
 954 }
 955
 956 check_as(){
 957     log check_as "$@"
 958     cat > $TMPS
 959     log_file $TMPS
 960     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 961 }
 962
 963 check_inline_asm(){
 964     log check_inline_asm "$@"
 965     name="$1"
 966     code="$2"
 967     shift 2
 968     disable $name
 969     check_cc "$@" <<EOF && enable $name
 970 void foo(void){ __asm__ volatile($code); }
 971 EOF
 972 }
 973
 974 check_inline_asm_flags(){
 975     log check_inline_asm_flags "$@"
 976     name="$1"
 977     code="$2"
 978     flags=''
 979     shift 2
 980     while [ "$1" != "" ]; do
 981       append flags $1
 982       shift
 983     done;
 984     disable $name
 985     cat > $TMPC <<EOF
 986 void foo(void){ __asm__ volatile($code); }
 987 EOF
 988     log_file $TMPC
 989     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 990     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 991 }
 992
 993 check_insn(){
 994     log check_insn "$@"
 995     check_inline_asm ${1}_inline "\"$2\""
 996     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 997 }
 998
 999 check_x86asm(){
1000     log check_x86asm "$@"
1001     echo "$1" > $TMPS
1002     log_file $TMPS
1003     shift 1
1004     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 check_ld(){
1012     log check_ld "$@"
1013     type=$1
1014     shift 1
1015     flags=$(filter_out '-l*|*.so' $@)
1016     libs=$(filter '-l*|*.so' $@)
1017     check_$type $($cflags_filter $flags) || return
1018     flags=$($ldflags_filter $flags)
1019     libs=$($ldflags_filter $libs)
1020     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1021 }
1022
1023 print_include(){
1024     hdr=$1
1025     test "${hdr%.h}" = "${hdr}" &&
1026         echo "#include $hdr"    ||
1027         echo "#include <$hdr>"
1028 }
1029
1030 check_code(){
1031     log check_code "$@"
1032     check=$1
1033     headers=$2
1034     code=$3
1035     shift 3
1036     {
1037         for hdr in $headers; do
1038             print_include $hdr
1039         done
1040         echo "int main(void) { $code; return 0; }"
1041     } | check_$check "$@"
1042 }
1043
1044 check_cppflags(){
1045     log check_cppflags "$@"
1046     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1047 #include <stdlib.h>
1048 EOF
1049 }
1050
1051 test_cflags(){
1052     log test_cflags "$@"
1053     set -- $($cflags_filter "$@")
1054     check_cc "$@" <<EOF
1055 int x;
1056 EOF
1057 }
1058
1059 check_cflags(){
1060     log check_cflags "$@"
1061     test_cflags "$@" && add_cflags "$@"
1062 }
1063
1064 check_cxxflags(){
1065     log check_cxxflags "$@"
1066     set -- $($cflags_filter "$@")
1067     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1068 int x;
1069 EOF
1070 }
1071
1072 test_objcflags(){
1073     log test_objcflags "$@"
1074     set -- $($objcflags_filter "$@")
1075     check_objcc "$@" <<EOF
1076 int x;
1077 EOF
1078 }
1079
1080 check_objcflags(){
1081     log check_objcflags "$@"
1082     test_objcflags "$@" && add_objcflags "$@"
1083 }
1084
1085 test_ldflags(){
1086     log test_ldflags "$@"
1087     set -- $($ldflags_filter "$@")
1088     check_ld "cc" "$@" <<EOF
1089 int main(void){ return 0; }
1090 EOF
1091 }
1092
1093 check_ldflags(){
1094     log check_ldflags "$@"
1095     test_ldflags "$@" && add_ldflags "$@"
1096 }
1097
1098 test_stripflags(){
1099     log test_stripflags "$@"
1100     # call check_cc to get a fresh TMPO
1101     check_cc <<EOF
1102 int main(void) { return 0; }
1103 EOF
1104     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1105 }
1106
1107 check_stripflags(){
1108     log check_stripflags "$@"
1109     test_stripflags "$@" && add_stripflags "$@"
1110 }
1111
1112 check_header(){
1113     log check_header "$@"
1114     headers=$1
1115     shift
1116     disable_sanitized $headers
1117     {
1118         for hdr in $headers; do
1119             print_include $hdr
1120         done
1121         echo "int x;"
1122     } | check_cpp "$@" && enable_sanitized $headers
1123 }
1124
1125 check_header_objcc(){
1126     log check_header_objcc "$@"
1127     rm -f -- "$TMPO"
1128     header=$1
1129     shift
1130     disable_sanitized $header
1131     {
1132        echo "#include <$header>"
1133        echo "int main(void) { return 0; }"
1134     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1135 }
1136
1137 check_apple_framework(){
1138     log check_apple_framework "$@"
1139     framework="$1"
1140     name="$(tolower $framework)"
1141     header="${framework}/${framework}.h"
1142     disable $name
1143     check_header_objcc $header &&
1144         enable $name && eval ${name}_extralibs='"-framework $framework"'
1145 }
1146
1147 check_func(){
1148     log check_func "$@"
1149     func=$1
1150     shift
1151     disable $func
1152     check_ld "cc" "$@" <<EOF && enable $func
1153 extern int $func();
1154 int main(void){ $func(); }
1155 EOF
1156 }
1157
1158 check_complexfunc(){
1159     log check_complexfunc "$@"
1160     func=$1
1161     narg=$2
1162     shift 2
1163     test $narg = 2 && args="f, g" || args="f * I"
1164     disable $func
1165     check_ld "cc" "$@" <<EOF && enable $func
1166 #include <complex.h>
1167 #include <math.h>
1168 float foo(complex float f, complex float g) { return $func($args); }
1169 int main(void){ return (int) foo; }
1170 EOF
1171 }
1172
1173 check_mathfunc(){
1174     log check_mathfunc "$@"
1175     func=$1
1176     narg=$2
1177     shift 2
1178     test $narg = 2 && args="f, g" || args="f"
1179     disable $func
1180     check_ld "cc" "$@" <<EOF && enable $func
1181 #include <math.h>
1182 float foo(float f, float g) { return $func($args); }
1183 int main(void){ return (int) foo; }
1184 EOF
1185 }
1186
1187 check_func_headers(){
1188     log check_func_headers "$@"
1189     headers=$1
1190     funcs=$2
1191     shift 2
1192     {
1193         for hdr in $headers; do
1194             print_include $hdr
1195         done
1196         echo "#include <stdint.h>"
1197         for func in $funcs; do
1198             echo "long check_$func(void) { return (long) $func; }"
1199         done
1200         echo "int main(void) { int ret = 0;"
1201         # LTO could optimize out the test functions without this
1202         for func in $funcs; do
1203             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1204         done
1205         echo "return ret; }"
1206     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1207 }
1208
1209 check_class_headers_cpp(){
1210     log check_class_headers_cpp "$@"
1211     headers=$1
1212     classes=$2
1213     shift 2
1214     {
1215         for hdr in $headers; do
1216             echo "#include <$hdr>"
1217         done
1218         echo "int main(void) { "
1219         i=1
1220         for class in $classes; do
1221             echo "$class obj$i;"
1222             i=$(expr $i + 1)
1223         done
1224         echo "return 0; }"
1225     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1226 }
1227
1228 check_cpp_condition(){
1229     log check_cpp_condition "$@"
1230     header=$1
1231     condition=$2
1232     shift 2
1233     check_cpp "$@" <<EOF
1234 #include <$header>
1235 #if !($condition)
1236 #error "unsatisfied condition: $condition"
1237 #endif
1238 EOF
1239 }
1240
1241 test_cflags_cc(){
1242     log test_cflags_cc "$@"
1243     flags=$1
1244     header=$2
1245     condition=$3
1246     shift 3
1247     set -- $($cflags_filter "$flags")
1248     check_cc "$@" <<EOF
1249 #include <$header>
1250 #if !($condition)
1251 #error "unsatisfied condition: $condition"
1252 #endif
1253 EOF
1254 }
1255
1256 check_lib(){
1257     log check_lib "$@"
1258     name="$1"
1259     headers="$2"
1260     funcs="$3"
1261     shift 3
1262     disable $name
1263     check_func_headers "$headers" "$funcs" "$@" &&
1264         enable $name && eval ${name}_extralibs="\$@"
1265 }
1266
1267 check_lib_cpp(){
1268     log check_lib_cpp "$@"
1269     name="$1"
1270     headers="$2"
1271     classes="$3"
1272     shift 3
1273     disable $name
1274     check_class_headers_cpp "$headers" "$classes" "$@" &&
1275         enable $name && eval ${name}_extralibs="\$@"
1276 }
1277
1278 test_pkg_config(){
1279     log test_pkg_config "$@"
1280     name="$1"
1281     pkg_version="$2"
1282     pkg="${2%% *}"
1283     headers="$3"
1284     funcs="$4"
1285     shift 4
1286     disable $name
1287     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1288     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1289     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1290     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1291         enable $name &&
1292         set_sanitized "${name}_cflags"    $pkg_cflags &&
1293         set_sanitized "${name}_extralibs" $pkg_libs
1294 }
1295
1296 check_pkg_config(){
1297     log check_pkg_config "$@"
1298     name="$1"
1299     test_pkg_config "$@" &&
1300         eval add_cflags \$${name}_cflags
1301 }
1302
1303 check_exec(){
1304     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1305 }
1306
1307 check_exec_crash(){
1308     log check_exec_crash "$@"
1309     code=$(cat)
1310
1311     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1312     # are safe but may not be available everywhere.  Thus we use
1313     # raise(SIGTERM) instead.  The check is run in a subshell so we
1314     # can redirect the "Terminated" message from the shell.  SIGBUS
1315     # is not defined by standard C so it is used conditionally.
1316
1317     (check_exec "$@") >> $logfile 2>&1 <<EOF
1318 #include <signal.h>
1319 static void sighandler(int sig){
1320     raise(SIGTERM);
1321 }
1322 int foo(void){
1323     $code
1324 }
1325 int (*func_ptr)(void) = foo;
1326 int main(void){
1327     signal(SIGILL, sighandler);
1328     signal(SIGFPE, sighandler);
1329     signal(SIGSEGV, sighandler);
1330 #ifdef SIGBUS
1331     signal(SIGBUS, sighandler);
1332 #endif
1333     return func_ptr();
1334 }
1335 EOF
1336 }
1337
1338 check_type(){
1339     log check_type "$@"
1340     headers=$1
1341     type=$2
1342     shift 2
1343     disable_sanitized "$type"
1344     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1345 }
1346
1347 check_struct(){
1348     log check_struct "$@"
1349     headers=$1
1350     struct=$2
1351     member=$3
1352     shift 3
1353     disable_sanitized "${struct}_${member}"
1354     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1355         enable_sanitized "${struct}_${member}"
1356 }
1357
1358 check_builtin(){
1359     log check_builtin "$@"
1360     name=$1
1361     headers=$2
1362     builtin=$3
1363     shift 3
1364     disable "$name"
1365     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1366 }
1367
1368 check_compile_assert(){
1369     log check_compile_assert "$@"
1370     name=$1
1371     headers=$2
1372     condition=$3
1373     shift 3
1374     disable "$name"
1375     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1376 }
1377
1378 require(){
1379     log require "$@"
1380     name_version="$1"
1381     name="${1%% *}"
1382     headers="$2"
1383     func="$3"
1384     shift 3
1385     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1386 }
1387
1388 require_cpp(){
1389     name="$1"
1390     headers="$2"
1391     classes="$3"
1392     shift 3
1393     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1394 }
1395
1396 require_header(){
1397     log require_header "$@"
1398     headers="$1"
1399     shift
1400     check_header "$headers" "$@" || die "ERROR: $headers not found"
1401 }
1402
1403 require_cpp_condition(){
1404     log require_cpp_condition "$@"
1405     header="$1"
1406     condition="$2"
1407     shift 2
1408     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1409 }
1410
1411 require_pkg_config(){
1412     log require_pkg_config "$@"
1413     pkg_version="$2"
1414     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1415 }
1416
1417 hostcc_e(){
1418     eval printf '%s\\n' $HOSTCC_E
1419 }
1420
1421 hostcc_o(){
1422     eval printf '%s\\n' $HOSTCC_O
1423 }
1424
1425 check_host_cc(){
1426     log check_host_cc "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1430 }
1431
1432 check_host_cpp(){
1433     log check_host_cpp "$@"
1434     cat > $TMPC
1435     log_file $TMPC
1436     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1437 }
1438
1439 check_host_cppflags(){
1440     log check_host_cppflags "$@"
1441     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1442 #include <stdlib.h>
1443 EOF
1444 }
1445
1446 check_host_cflags(){
1447     log check_host_cflags "$@"
1448     set -- $($host_cflags_filter "$@")
1449     check_host_cc "$@" <<EOF && append host_cflags "$@"
1450 int x;
1451 EOF
1452 }
1453
1454 check_host_cpp_condition(){
1455     log check_host_cpp_condition "$@"
1456     header=$1
1457     condition=$2
1458     shift 2
1459     check_host_cpp "$@" <<EOF
1460 #include <$header>
1461 #if !($condition)
1462 #error "unsatisfied condition: $condition"
1463 #endif
1464 EOF
1465 }
1466
1467 cp_if_changed(){
1468     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1469     mkdir -p "$(dirname $2)"
1470     cp -f "$1" "$2"
1471 }
1472
1473 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1474 # system-dependent things.
1475
1476 AVCODEC_COMPONENTS="
1477     bsfs
1478     decoders
1479     encoders
1480     hwaccels
1481     parsers
1482 "
1483
1484 AVDEVICE_COMPONENTS="
1485     indevs
1486     outdevs
1487 "
1488
1489 AVFILTER_COMPONENTS="
1490     filters
1491 "
1492
1493 AVFORMAT_COMPONENTS="
1494     demuxers
1495     muxers
1496     protocols
1497 "
1498
1499 COMPONENT_LIST="
1500     $AVCODEC_COMPONENTS
1501     $AVDEVICE_COMPONENTS
1502     $AVFILTER_COMPONENTS
1503     $AVFORMAT_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528     vaapi_encode_example
1529 "
1530
1531 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1532     alsa
1533     appkit
1534     avfoundation
1535     bzlib
1536     coreimage
1537     iconv
1538     libxcb
1539     libxcb_shm
1540     libxcb_shape
1541     libxcb_xfixes
1542     lzma
1543     schannel
1544     sdl2
1545     securetransport
1546     sndio
1547     xlib
1548     zlib
1549 "
1550
1551 EXTERNAL_LIBRARY_GPL_LIST="
1552     avisynth
1553     frei0r
1554     libcdio
1555     librubberband
1556     libvidstab
1557     libx264
1558     libx265
1559     libxavs
1560     libxvid
1561 "
1562
1563 EXTERNAL_LIBRARY_NONFREE_LIST="
1564     decklink
1565     libndi_newtek
1566     libfdk_aac
1567     openssl
1568     libtls
1569 "
1570
1571 EXTERNAL_LIBRARY_VERSION3_LIST="
1572     gmp
1573     libopencore_amrnb
1574     libopencore_amrwb
1575     libvmaf
1576     libvo_amrwbenc
1577     rkmpp
1578 "
1579
1580 EXTERNAL_LIBRARY_GPLV3_LIST="
1581     libsmbclient
1582 "
1583
1584 EXTERNAL_LIBRARY_LIST="
1585     $EXTERNAL_LIBRARY_GPL_LIST
1586     $EXTERNAL_LIBRARY_NONFREE_LIST
1587     $EXTERNAL_LIBRARY_VERSION3_LIST
1588     $EXTERNAL_LIBRARY_GPLV3_LIST
1589     chromaprint
1590     gcrypt
1591     gnutls
1592     jni
1593     ladspa
1594     libass
1595     libbluray
1596     libbs2b
1597     libcaca
1598     libcelt
1599     libdc1394
1600     libdrm
1601     libflite
1602     libfontconfig
1603     libfreetype
1604     libfribidi
1605     libgme
1606     libgsm
1607     libiec61883
1608     libilbc
1609     libjack
1610     libkvazaar
1611     libmodplug
1612     libmp3lame
1613     libmysofa
1614     libopencv
1615     libopenh264
1616     libopenjpeg
1617     libopenmpt
1618     libopus
1619     libpulse
1620     librsvg
1621     librtmp
1622     libshine
1623     libsmbclient
1624     libsnappy
1625     libsoxr
1626     libspeex
1627     libssh
1628     libtesseract
1629     libtheora
1630     libtwolame
1631     libv4l2
1632     libvorbis
1633     libvpx
1634     libwavpack
1635     libwebp
1636     libxml2
1637     libzimg
1638     libzmq
1639     libzvbi
1640     lv2
1641     mediacodec
1642     openal
1643     opengl
1644 "
1645
1646 HWACCEL_AUTODETECT_LIBRARY_LIST="
1647     amf
1648     audiotoolbox
1649     crystalhd
1650     cuda
1651     cuvid
1652     d3d11va
1653     dxva2
1654     nvdec
1655     nvenc
1656     vaapi
1657     vdpau
1658     videotoolbox
1659     v4l2_m2m
1660     xvmc
1661 "
1662
1663 # catchall list of things that require external libs to link
1664 EXTRALIBS_LIST="
1665     cpu_init
1666     cws2fws
1667 "
1668
1669 HWACCEL_LIBRARY_NONFREE_LIST="
1670     cuda_sdk
1671     libnpp
1672 "
1673
1674 HWACCEL_LIBRARY_LIST="
1675     $HWACCEL_LIBRARY_NONFREE_LIST
1676     libmfx
1677     mmal
1678     omx
1679     opencl
1680 "
1681
1682 DOCUMENT_LIST="
1683     doc
1684     htmlpages
1685     manpages
1686     podpages
1687     txtpages
1688 "
1689
1690 FEATURE_LIST="
1691     ftrapv
1692     gray
1693     hardcoded_tables
1694     omx_rpi
1695     runtime_cpudetect
1696     safe_bitstream_reader
1697     shared
1698     small
1699     static
1700     swscale_alpha
1701 "
1702
1703 LIBRARY_LIST="
1704     avcodec
1705     avdevice
1706     avfilter
1707     avformat
1708     avresample
1709     avutil
1710     postproc
1711     swresample
1712     swscale
1713 "
1714
1715 LICENSE_LIST="
1716     gpl
1717     nonfree
1718     version3
1719 "
1720
1721 PROGRAM_LIST="
1722     ffplay
1723     ffprobe
1724     ffmpeg
1725 "
1726
1727 SUBSYSTEM_LIST="
1728     dct
1729     dwt
1730     error_resilience
1731     faan
1732     fast_unaligned
1733     fft
1734     lsp
1735     lzo
1736     mdct
1737     pixelutils
1738     network
1739     rdft
1740 "
1741
1742 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1743 CONFIG_LIST="
1744     $DOCUMENT_LIST
1745     $EXAMPLE_LIST
1746     $EXTERNAL_LIBRARY_LIST
1747     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1748     $HWACCEL_LIBRARY_LIST
1749     $HWACCEL_AUTODETECT_LIBRARY_LIST
1750     $FEATURE_LIST
1751     $LICENSE_LIST
1752     $LIBRARY_LIST
1753     $PROGRAM_LIST
1754     $SUBSYSTEM_LIST
1755     autodetect
1756     fontconfig
1757     linux_perf
1758     memory_poisoning
1759     neon_clobber_test
1760     ossfuzz
1761     pic
1762     thumb
1763     valgrind_backtrace
1764     xmm_clobber_test
1765     $COMPONENT_LIST
1766 "
1767
1768 THREADS_LIST="
1769     pthreads
1770     os2threads
1771     w32threads
1772 "
1773
1774 ATOMICS_LIST="
1775     atomics_gcc
1776     atomics_suncc
1777     atomics_win32
1778 "
1779
1780 AUTODETECT_LIBS="
1781     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1782     $HWACCEL_AUTODETECT_LIBRARY_LIST
1783     $THREADS_LIST
1784 "
1785
1786 ARCH_LIST="
1787     aarch64
1788     alpha
1789     arm
1790     avr32
1791     avr32_ap
1792     avr32_uc
1793     bfin
1794     ia64
1795     m68k
1796     mips
1797     mips64
1798     parisc
1799     ppc
1800     ppc64
1801     s390
1802     sh4
1803     sparc
1804     sparc64
1805     tilegx
1806     tilepro
1807     tomi
1808     x86
1809     x86_32
1810     x86_64
1811 "
1812
1813 ARCH_EXT_LIST_ARM="
1814     armv5te
1815     armv6
1816     armv6t2
1817     armv8
1818     neon
1819     vfp
1820     vfpv3
1821     setend
1822 "
1823
1824 ARCH_EXT_LIST_MIPS="
1825     mipsfpu
1826     mips32r2
1827     mips32r5
1828     mips64r2
1829     mips32r6
1830     mips64r6
1831     mipsdsp
1832     mipsdspr2
1833     msa
1834 "
1835
1836 ARCH_EXT_LIST_LOONGSON="
1837     loongson2
1838     loongson3
1839     mmi
1840 "
1841
1842 ARCH_EXT_LIST_X86_SIMD="
1843     aesni
1844     amd3dnow
1845     amd3dnowext
1846     avx
1847     avx2
1848     avx512
1849     fma3
1850     fma4
1851     mmx
1852     mmxext
1853     sse
1854     sse2
1855     sse3
1856     sse4
1857     sse42
1858     ssse3
1859     xop
1860 "
1861
1862 ARCH_EXT_LIST_PPC="
1863     altivec
1864     dcbzl
1865     ldbrx
1866     power8
1867     ppc4xx
1868     vsx
1869 "
1870
1871 ARCH_EXT_LIST_X86="
1872     $ARCH_EXT_LIST_X86_SIMD
1873     cpunop
1874     i686
1875 "
1876
1877 ARCH_EXT_LIST="
1878     $ARCH_EXT_LIST_ARM
1879     $ARCH_EXT_LIST_PPC
1880     $ARCH_EXT_LIST_X86
1881     $ARCH_EXT_LIST_MIPS
1882     $ARCH_EXT_LIST_LOONGSON
1883 "
1884
1885 ARCH_FEATURES="
1886     aligned_stack
1887     fast_64bit
1888     fast_clz
1889     fast_cmov
1890     local_aligned
1891     simd_align_16
1892     simd_align_32
1893     simd_align_64
1894 "
1895
1896 BUILTIN_LIST="
1897     atomic_cas_ptr
1898     machine_rw_barrier
1899     MemoryBarrier
1900     mm_empty
1901     rdtsc
1902     sem_timedwait
1903     sync_val_compare_and_swap
1904 "
1905 HAVE_LIST_CMDLINE="
1906     inline_asm
1907     symver
1908     x86asm
1909 "
1910
1911 HAVE_LIST_PUB="
1912     bigendian
1913     fast_unaligned
1914 "
1915
1916 HEADERS_LIST="
1917     arpa_inet_h
1918     asm_types_h
1919     cdio_paranoia_h
1920     cdio_paranoia_paranoia_h
1921     cuda_h
1922     dispatch_dispatch_h
1923     dev_bktr_ioctl_bt848_h
1924     dev_bktr_ioctl_meteor_h
1925     dev_ic_bt8xx_h
1926     dev_video_bktr_ioctl_bt848_h
1927     dev_video_meteor_ioctl_meteor_h
1928     direct_h
1929     dirent_h
1930     dxgidebug_h
1931     dxva_h
1932     ES2_gl_h
1933     gsm_h
1934     io_h
1935     machine_ioctl_bt848_h
1936     machine_ioctl_meteor_h
1937     malloc_h
1938     opencv2_core_core_c_h
1939     OpenGL_gl3_h
1940     poll_h
1941     sys_param_h
1942     sys_resource_h
1943     sys_select_h
1944     sys_soundcard_h
1945     sys_time_h
1946     sys_un_h
1947     sys_videoio_h
1948     termios_h
1949     udplite_h
1950     unistd_h
1951     valgrind_valgrind_h
1952     windows_h
1953     winsock2_h
1954 "
1955
1956 INTRINSICS_LIST="
1957     intrinsics_neon
1958 "
1959
1960 COMPLEX_FUNCS="
1961     cabs
1962     cexp
1963 "
1964
1965 MATH_FUNCS="
1966     atanf
1967     atan2f
1968     cbrt
1969     cbrtf
1970     copysign
1971     cosf
1972     erf
1973     exp2
1974     exp2f
1975     expf
1976     hypot
1977     isfinite
1978     isinf
1979     isnan
1980     ldexpf
1981     llrint
1982     llrintf
1983     log2
1984     log2f
1985     log10f
1986     lrint
1987     lrintf
1988     powf
1989     rint
1990     round
1991     roundf
1992     sinf
1993     trunc
1994     truncf
1995 "
1996
1997 SYSTEM_FEATURES="
1998     dos_paths
1999     libc_msvcrt
2000     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2001     section_data_rel_ro
2002     threads
2003     uwp
2004     winrt
2005 "
2006
2007 SYSTEM_FUNCS="
2008     access
2009     aligned_malloc
2010     arc4random
2011     clock_gettime
2012     closesocket
2013     CommandLineToArgvW
2014     fcntl
2015     getaddrinfo
2016     gethrtime
2017     getopt
2018     GetProcessAffinityMask
2019     GetProcessMemoryInfo
2020     GetProcessTimes
2021     getrusage
2022     GetSystemTimeAsFileTime
2023     gettimeofday
2024     glob
2025     glXGetProcAddress
2026     gmtime_r
2027     inet_aton
2028     isatty
2029     kbhit
2030     localtime_r
2031     lstat
2032     lzo1x_999_compress
2033     mach_absolute_time
2034     MapViewOfFile
2035     memalign
2036     mkstemp
2037     mmap
2038     mprotect
2039     nanosleep
2040     PeekNamedPipe
2041     posix_memalign
2042     pthread_cancel
2043     sched_getaffinity
2044     SecItemImport
2045     SetConsoleTextAttribute
2046     SetConsoleCtrlHandler
2047     setmode
2048     setrlimit
2049     Sleep
2050     strerror_r
2051     sysconf
2052     sysctl
2053     usleep
2054     UTGetOSTypeFromString
2055     VirtualAlloc
2056     wglGetProcAddress
2057 "
2058
2059 SYSTEM_LIBRARIES="
2060     vaapi_drm
2061     vaapi_x11
2062     vdpau_x11
2063     wincrypt
2064 "
2065
2066 TOOLCHAIN_FEATURES="
2067     as_arch_directive
2068     as_fpu_directive
2069     as_func
2070     as_object_arch
2071     asm_mod_q
2072     blocks_extension
2073     ebp_available
2074     ebx_available
2075     gnu_as
2076     gnu_windres
2077     ibm_asm
2078     inline_asm_direct_symbol_refs
2079     inline_asm_labels
2080     inline_asm_nonlocal_labels
2081     pragma_deprecated
2082     rsync_contimeout
2083     symver_asm_label
2084     symver_gnu_asm
2085     vfp_args
2086     xform_asm
2087     xmm_clobbers
2088 "
2089
2090 TYPES_LIST="
2091     kCMVideoCodecType_HEVC
2092     socklen_t
2093     struct_addrinfo
2094     struct_group_source_req
2095     struct_ip_mreq_source
2096     struct_ipv6_mreq
2097     struct_msghdr_msg_flags
2098     struct_pollfd
2099     struct_rusage_ru_maxrss
2100     struct_sctp_event_subscribe
2101     struct_sockaddr_in6
2102     struct_sockaddr_sa_len
2103     struct_sockaddr_storage
2104     struct_stat_st_mtim_tv_nsec
2105     struct_v4l2_frmivalenum_discrete
2106 "
2107
2108 HAVE_LIST="
2109     $ARCH_EXT_LIST
2110     $(add_suffix _external $ARCH_EXT_LIST)
2111     $(add_suffix _inline   $ARCH_EXT_LIST)
2112     $ARCH_FEATURES
2113     $BUILTIN_LIST
2114     $COMPLEX_FUNCS
2115     $HAVE_LIST_CMDLINE
2116     $HAVE_LIST_PUB
2117     $HEADERS_LIST
2118     $INTRINSICS_LIST
2119     $MATH_FUNCS
2120     $SYSTEM_FEATURES
2121     $SYSTEM_FUNCS
2122     $SYSTEM_LIBRARIES
2123     $THREADS_LIST
2124     $TOOLCHAIN_FEATURES
2125     $TYPES_LIST
2126     makeinfo
2127     makeinfo_html
2128     opencl_d3d11
2129     opencl_drm_arm
2130     opencl_dxva2
2131     opencl_vaapi_beignet
2132     opencl_vaapi_intel_media
2133     perl
2134     pod2man
2135     texi2html
2136 "
2137
2138 # options emitted with CONFIG_ prefix but not available on the command line
2139 CONFIG_EXTRA="
2140     aandcttables
2141     ac3dsp
2142     adts_header
2143     audio_frame_queue
2144     audiodsp
2145     blockdsp
2146     bswapdsp
2147     cabac
2148     cbs
2149     cbs_h264
2150     cbs_h265
2151     cbs_mpeg2
2152     dirac_parse
2153     dvprofile
2154     exif
2155     faandct
2156     faanidct
2157     fdctdsp
2158     flacdsp
2159     fmtconvert
2160     frame_thread_encoder
2161     g722dsp
2162     golomb
2163     gplv3
2164     h263dsp
2165     h264chroma
2166     h264dsp
2167     h264parse
2168     h264pred
2169     h264qpel
2170     hevcparse
2171     hpeldsp
2172     huffman
2173     huffyuvdsp
2174     huffyuvencdsp
2175     idctdsp
2176     iirfilter
2177     mdct15
2178     intrax8
2179     iso_media
2180     ividsp
2181     jpegtables
2182     lgplv3
2183     libx262
2184     llauddsp
2185     llviddsp
2186     llvidencdsp
2187     lpc
2188     lzf
2189     me_cmp
2190     mpeg_er
2191     mpegaudio
2192     mpegaudiodsp
2193     mpegaudioheader
2194     mpegvideo
2195     mpegvideoenc
2196     mss34dsp
2197     pixblockdsp
2198     qpeldsp
2199     qsv
2200     qsvdec
2201     qsvenc
2202     qsvvpp
2203     rangecoder
2204     riffdec
2205     riffenc
2206     rtpdec
2207     rtpenc_chain
2208     rv34dsp
2209     sinewin
2210     snappy
2211     srtp
2212     startcode
2213     texturedsp
2214     texturedspenc
2215     tpeldsp
2216     vaapi_1
2217     vaapi_encode
2218     vc1dsp
2219     videodsp
2220     vp3dsp
2221     vp56dsp
2222     vp8dsp
2223     wma_freqs
2224     wmv2dsp
2225 "
2226
2227 CMDLINE_SELECT="
2228     $ARCH_EXT_LIST
2229     $CONFIG_LIST
2230     $HAVE_LIST_CMDLINE
2231     $THREADS_LIST
2232     asm
2233     cross_compile
2234     debug
2235     extra_warnings
2236     logging
2237     lto
2238     optimizations
2239     rpath
2240     stripping
2241 "
2242
2243 PATHS_LIST="
2244     bindir
2245     datadir
2246     docdir
2247     incdir
2248     libdir
2249     mandir
2250     pkgconfigdir
2251     prefix
2252     shlibdir
2253     install_name_dir
2254 "
2255
2256 CMDLINE_SET="
2257     $PATHS_LIST
2258     ar
2259     arch
2260     as
2261     assert_level
2262     build_suffix
2263     cc
2264     objcc
2265     cpu
2266     cross_prefix
2267     custom_allocator
2268     cxx
2269     dep_cc
2270     doxygen
2271     env
2272     extra_version
2273     gas
2274     host_cc
2275     host_cflags
2276     host_extralibs
2277     host_ld
2278     host_ldflags
2279     host_os
2280     ignore_tests
2281     install
2282     ld
2283     ln_s
2284     logfile
2285     malloc_prefix
2286     nm
2287     optflags
2288     nvccflags
2289     pkg_config
2290     pkg_config_flags
2291     progs_suffix
2292     random_seed
2293     ranlib
2294     samples
2295     strip
2296     sws_max_filter_size
2297     sysinclude
2298     sysroot
2299     target_exec
2300     target_os
2301     target_path
2302     target_samples
2303     tempprefix
2304     toolchain
2305     valgrind
2306     x86asmexe
2307 "
2308
2309 CMDLINE_APPEND="
2310     extra_cflags
2311     extra_cxxflags
2312     extra_objcflags
2313     host_cppflags
2314 "
2315
2316 # code dependency declarations
2317
2318 # architecture extensions
2319
2320 armv5te_deps="arm"
2321 armv6_deps="arm"
2322 armv6t2_deps="arm"
2323 armv8_deps="aarch64"
2324 neon_deps_any="aarch64 arm"
2325 intrinsics_neon_deps="neon"
2326 vfp_deps_any="aarch64 arm"
2327 vfpv3_deps="vfp"
2328 setend_deps="arm"
2329
2330 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2331
2332 altivec_deps="ppc"
2333 dcbzl_deps="ppc"
2334 ldbrx_deps="ppc"
2335 ppc4xx_deps="ppc"
2336 vsx_deps="altivec"
2337 power8_deps="vsx"
2338
2339 loongson2_deps="mips"
2340 loongson3_deps="mips"
2341 mips32r2_deps="mips"
2342 mips32r5_deps="mips"
2343 mips32r6_deps="mips"
2344 mips64r2_deps="mips"
2345 mips64r6_deps="mips"
2346 mipsfpu_deps="mips"
2347 mipsdsp_deps="mips"
2348 mipsdspr2_deps="mips"
2349 mmi_deps="mips"
2350 msa_deps="mipsfpu"
2351
2352 cpunop_deps="i686"
2353 x86_64_select="i686"
2354 x86_64_suggest="fast_cmov"
2355
2356 amd3dnow_deps="mmx"
2357 amd3dnowext_deps="amd3dnow"
2358 i686_deps="x86"
2359 mmx_deps="x86"
2360 mmxext_deps="mmx"
2361 sse_deps="mmxext"
2362 sse2_deps="sse"
2363 sse3_deps="sse2"
2364 ssse3_deps="sse3"
2365 sse4_deps="ssse3"
2366 sse42_deps="sse4"
2367 aesni_deps="sse42"
2368 avx_deps="sse42"
2369 xop_deps="avx"
2370 fma3_deps="avx"
2371 fma4_deps="avx"
2372 avx2_deps="avx"
2373 avx512_deps="avx2"
2374
2375 mmx_external_deps="x86asm"
2376 mmx_inline_deps="inline_asm x86"
2377 mmx_suggest="mmx_external mmx_inline"
2378
2379 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2380     eval dep=\$${ext}_deps
2381     eval ${ext}_external_deps='"${dep}_external"'
2382     eval ${ext}_inline_deps='"${dep}_inline"'
2383     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2384 done
2385
2386 aligned_stack_if_any="aarch64 ppc x86"
2387 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2388 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2389 fast_unaligned_if_any="aarch64 ppc x86"
2390 simd_align_16_if_any="altivec neon sse"
2391 simd_align_32_if_any="avx"
2392 simd_align_64_if_any="avx512"
2393
2394 # system capabilities
2395 symver_if_any="symver_asm_label symver_gnu_asm"
2396 valgrind_backtrace_conflict="optimizations"
2397 valgrind_backtrace_deps="valgrind_valgrind_h"
2398
2399 # threading support
2400 atomics_gcc_if="sync_val_compare_and_swap"
2401 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2402 atomics_win32_if="MemoryBarrier"
2403 atomics_native_if_any="$ATOMICS_LIST"
2404 w32threads_deps="atomics_native"
2405 threads_if_any="$THREADS_LIST"
2406
2407 # subsystems
2408 cbs_h264_select="cbs golomb"
2409 cbs_h265_select="cbs golomb"
2410 cbs_mpeg2_select="cbs"
2411 dct_select="rdft"
2412 dirac_parse_select="golomb"
2413 error_resilience_select="me_cmp"
2414 faandct_deps="faan"
2415 faandct_select="fdctdsp"
2416 faanidct_deps="faan"
2417 faanidct_select="idctdsp"
2418 h264dsp_select="startcode"
2419 hevcparse_select="golomb"
2420 frame_thread_encoder_deps="encoders threads"
2421 intrax8_select="blockdsp idctdsp"
2422 mdct_select="fft"
2423 mdct15_select="fft"
2424 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2425 mpeg_er_select="error_resilience"
2426 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2427 mpegaudiodsp_select="dct"
2428 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2429 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2430 vc1dsp_select="h264chroma qpeldsp startcode"
2431 rdft_select="fft"
2432
2433 # decoders / encoders
2434 aac_decoder_select="adts_header mdct15 mdct sinewin"
2435 aac_fixed_decoder_select="mdct sinewin"
2436 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2437 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2438 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2439 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2440 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2441 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2442 adpcm_g722_decoder_select="g722dsp"
2443 adpcm_g722_encoder_select="g722dsp"
2444 aic_decoder_select="golomb idctdsp"
2445 alac_encoder_select="lpc"
2446 als_decoder_select="bswapdsp"
2447 amrnb_decoder_select="lsp"
2448 amrwb_decoder_select="lsp"
2449 amv_decoder_select="sp5x_decoder exif"
2450 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2451 ape_decoder_select="bswapdsp llauddsp"
2452 apng_decoder_deps="zlib"
2453 apng_encoder_deps="zlib"
2454 apng_encoder_select="llvidencdsp"
2455 aptx_decoder_select="audio_frame_queue"
2456 aptx_encoder_select="audio_frame_queue"
2457 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2458 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2459 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2460 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2461 atrac1_decoder_select="mdct sinewin"
2462 atrac3_decoder_select="mdct"
2463 atrac3p_decoder_select="mdct sinewin"
2464 avrn_decoder_select="exif jpegtables"
2465 bink_decoder_select="blockdsp hpeldsp"
2466 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2467 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2468 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2469 clearvideo_decoder_select="idctdsp"
2470 cllc_decoder_select="bswapdsp"
2471 comfortnoise_encoder_select="lpc"
2472 cook_decoder_select="audiodsp mdct sinewin"
2473 cscd_decoder_select="lzo"
2474 cscd_decoder_suggest="zlib"
2475 dca_decoder_select="mdct"
2476 dds_decoder_select="texturedsp"
2477 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2478 dnxhd_decoder_select="blockdsp idctdsp"
2479 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2480 dolby_e_decoder_select="mdct"
2481 dvvideo_decoder_select="dvprofile idctdsp"
2482 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2483 dxa_decoder_deps="zlib"
2484 dxv_decoder_select="lzf texturedsp"
2485 eac3_decoder_select="ac3_decoder"
2486 eac3_encoder_select="ac3_encoder"
2487 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2488 eatgq_decoder_select="aandcttables"
2489 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2490 exr_decoder_deps="zlib"
2491 ffv1_decoder_select="rangecoder"
2492 ffv1_encoder_select="rangecoder"
2493 ffvhuff_decoder_select="huffyuv_decoder"
2494 ffvhuff_encoder_select="huffyuv_encoder"
2495 fic_decoder_select="golomb"
2496 flac_decoder_select="flacdsp"
2497 flac_encoder_select="bswapdsp flacdsp lpc"
2498 flashsv2_decoder_deps="zlib"
2499 flashsv2_encoder_deps="zlib"
2500 flashsv_decoder_deps="zlib"
2501 flashsv_encoder_deps="zlib"
2502 flv_decoder_select="h263_decoder"
2503 flv_encoder_select="h263_encoder"
2504 fourxm_decoder_select="blockdsp bswapdsp"
2505 fraps_decoder_select="bswapdsp huffman"
2506 g2m_decoder_deps="zlib"
2507 g2m_decoder_select="blockdsp idctdsp jpegtables"
2508 g729_decoder_select="audiodsp"
2509 h261_decoder_select="mpegvideo"
2510 h261_encoder_select="aandcttables mpegvideoenc"
2511 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2512 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2513 h263i_decoder_select="h263_decoder"
2514 h263p_decoder_select="h263_decoder"
2515 h263p_encoder_select="h263_encoder"
2516 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2517 h264_decoder_suggest="error_resilience"
2518 hap_decoder_select="snappy texturedsp"
2519 hap_encoder_deps="libsnappy"
2520 hap_encoder_select="texturedspenc"
2521 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2522 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2523 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2524 iac_decoder_select="imc_decoder"
2525 imc_decoder_select="bswapdsp fft mdct sinewin"
2526 indeo3_decoder_select="hpeldsp"
2527 indeo4_decoder_select="ividsp"
2528 indeo5_decoder_select="ividsp"
2529 interplay_video_decoder_select="hpeldsp"
2530 jpegls_decoder_select="mjpeg_decoder"
2531 jv_decoder_select="blockdsp"
2532 lagarith_decoder_select="llviddsp"
2533 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2534 magicyuv_decoder_select="llviddsp"
2535 magicyuv_encoder_select="llvidencdsp"
2536 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2537 metasound_decoder_select="lsp mdct sinewin"
2538 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2539 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2540 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2541 mjpegb_decoder_select="mjpeg_decoder"
2542 mlp_decoder_select="mlp_parser"
2543 mlp_encoder_select="lpc"
2544 motionpixels_decoder_select="bswapdsp"
2545 mp1_decoder_select="mpegaudio"
2546 mp1float_decoder_select="mpegaudio"
2547 mp2_decoder_select="mpegaudio"
2548 mp2float_decoder_select="mpegaudio"
2549 mp3_decoder_select="mpegaudio"
2550 mp3adu_decoder_select="mpegaudio"
2551 mp3adufloat_decoder_select="mpegaudio"
2552 mp3float_decoder_select="mpegaudio"
2553 mp3on4_decoder_select="mpegaudio"
2554 mp3on4float_decoder_select="mpegaudio"
2555 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2556 mpc8_decoder_select="mpegaudiodsp"
2557 mpegvideo_decoder_select="mpegvideo"
2558 mpeg1video_decoder_select="mpegvideo"
2559 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2560 mpeg2video_decoder_select="mpegvideo"
2561 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2562 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2563 mpeg4_encoder_select="h263_encoder"
2564 msa1_decoder_select="mss34dsp"
2565 mscc_decoder_deps="zlib"
2566 msmpeg4v1_decoder_select="h263_decoder"
2567 msmpeg4v2_decoder_select="h263_decoder"
2568 msmpeg4v2_encoder_select="h263_encoder"
2569 msmpeg4v3_decoder_select="h263_decoder"
2570 msmpeg4v3_encoder_select="h263_encoder"
2571 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2572 mts2_decoder_select="mss34dsp"
2573 mxpeg_decoder_select="mjpeg_decoder"
2574 nellymoser_decoder_select="mdct sinewin"
2575 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2576 nuv_decoder_select="idctdsp lzo"
2577 on2avc_decoder_select="mdct"
2578 opus_decoder_deps="swresample"
2579 opus_decoder_select="mdct15"
2580 opus_encoder_select="audio_frame_queue mdct15"
2581 png_decoder_deps="zlib"
2582 png_encoder_deps="zlib"
2583 png_encoder_select="llvidencdsp"
2584 prores_decoder_select="blockdsp idctdsp"
2585 prores_encoder_select="fdctdsp"
2586 qcelp_decoder_select="lsp"
2587 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2588 ra_144_decoder_select="audiodsp"
2589 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2590 ralf_decoder_select="golomb"
2591 rawvideo_decoder_select="bswapdsp"
2592 rscc_decoder_deps="zlib"
2593 rtjpeg_decoder_select="me_cmp"
2594 rv10_decoder_select="h263_decoder"
2595 rv10_encoder_select="h263_encoder"
2596 rv20_decoder_select="h263_decoder"
2597 rv20_encoder_select="h263_encoder"
2598 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2599 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2600 screenpresso_decoder_deps="zlib"
2601 shorten_decoder_select="bswapdsp"
2602 sipr_decoder_select="lsp"
2603 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2604 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2605 sonic_decoder_select="golomb rangecoder"
2606 sonic_encoder_select="golomb rangecoder"
2607 sonic_ls_encoder_select="golomb rangecoder"
2608 sp5x_decoder_select="mjpeg_decoder"
2609 srgc_decoder_deps="zlib"
2610 svq1_decoder_select="hpeldsp"
2611 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2612 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2613 svq3_decoder_suggest="zlib"
2614 tak_decoder_select="audiodsp"
2615 tdsc_decoder_deps="zlib"
2616 tdsc_decoder_select="mjpeg_decoder"
2617 theora_decoder_select="vp3_decoder"
2618 thp_decoder_select="mjpeg_decoder"
2619 tiff_decoder_suggest="zlib lzma"
2620 tiff_encoder_suggest="zlib"
2621 truehd_decoder_select="mlp_parser"
2622 truehd_encoder_select="lpc"
2623 truemotion2_decoder_select="bswapdsp"
2624 truespeech_decoder_select="bswapdsp"
2625 tscc_decoder_deps="zlib"
2626 twinvq_decoder_select="mdct lsp sinewin"
2627 txd_decoder_select="texturedsp"
2628 utvideo_decoder_select="bswapdsp llviddsp"
2629 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2630 vble_decoder_select="llviddsp"
2631 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2632 vc1image_decoder_select="vc1_decoder"
2633 vorbis_decoder_select="mdct"
2634 vorbis_encoder_select="mdct"
2635 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2636 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2637 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2638 vp6a_decoder_select="vp6_decoder"
2639 vp6f_decoder_select="vp6_decoder"
2640 vp7_decoder_select="h264pred videodsp vp8dsp"
2641 vp8_decoder_select="h264pred videodsp vp8dsp"
2642 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2643 webp_decoder_select="vp8_decoder exif"
2644 wmalossless_decoder_select="llauddsp"
2645 wmapro_decoder_select="mdct sinewin wma_freqs"
2646 wmav1_decoder_select="mdct sinewin wma_freqs"
2647 wmav1_encoder_select="mdct sinewin wma_freqs"
2648 wmav2_decoder_select="mdct sinewin wma_freqs"
2649 wmav2_encoder_select="mdct sinewin wma_freqs"
2650 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2651 wmv1_decoder_select="h263_decoder"
2652 wmv1_encoder_select="h263_encoder"
2653 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2654 wmv2_encoder_select="h263_encoder wmv2dsp"
2655 wmv3_decoder_select="vc1_decoder"
2656 wmv3image_decoder_select="wmv3_decoder"
2657 xma1_decoder_select="wmapro_decoder"
2658 xma2_decoder_select="wmapro_decoder"
2659 zerocodec_decoder_deps="zlib"
2660 zlib_decoder_deps="zlib"
2661 zlib_encoder_deps="zlib"
2662 zmbv_decoder_deps="zlib"
2663 zmbv_encoder_deps="zlib"
2664
2665 # hardware accelerators
2666 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2667 cuda_deps_any="libdl LoadLibrary"
2668 cuvid_deps="cuda"
2669 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2670 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2671 nvdec_deps="cuda"
2672 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2673 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2674 xvmc_deps="X11_extensions_XvMClib_h"
2675
2676 h263_vaapi_hwaccel_deps="vaapi"
2677 h263_vaapi_hwaccel_select="h263_decoder"
2678 h263_videotoolbox_hwaccel_deps="videotoolbox"
2679 h263_videotoolbox_hwaccel_select="h263_decoder"
2680 h264_d3d11va_hwaccel_deps="d3d11va"
2681 h264_d3d11va_hwaccel_select="h264_decoder"
2682 h264_d3d11va2_hwaccel_deps="d3d11va"
2683 h264_d3d11va2_hwaccel_select="h264_decoder"
2684 h264_dxva2_hwaccel_deps="dxva2"
2685 h264_dxva2_hwaccel_select="h264_decoder"
2686 h264_nvdec_hwaccel_deps="nvdec"
2687 h264_nvdec_hwaccel_select="h264_decoder"
2688 h264_vaapi_hwaccel_deps="vaapi"
2689 h264_vaapi_hwaccel_select="h264_decoder"
2690 h264_vdpau_hwaccel_deps="vdpau"
2691 h264_vdpau_hwaccel_select="h264_decoder"
2692 h264_videotoolbox_hwaccel_deps="videotoolbox"
2693 h264_videotoolbox_hwaccel_select="h264_decoder"
2694 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2695 hevc_d3d11va_hwaccel_select="hevc_decoder"
2696 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2697 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2698 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2699 hevc_dxva2_hwaccel_select="hevc_decoder"
2700 hevc_nvdec_hwaccel_deps="nvdec"
2701 hevc_nvdec_hwaccel_select="hevc_decoder"
2702 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2703 hevc_vaapi_hwaccel_select="hevc_decoder"
2704 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2705 hevc_vdpau_hwaccel_select="hevc_decoder"
2706 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2707 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2708 mpeg_xvmc_hwaccel_deps="xvmc"
2709 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2710 mpeg1_nvdec_hwaccel_deps="nvdec"
2711 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_vdpau_hwaccel_deps="vdpau"
2713 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2715 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2716 mpeg1_xvmc_hwaccel_deps="xvmc"
2717 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2718 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2719 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2721 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_dxva2_hwaccel_deps="dxva2"
2723 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_nvdec_hwaccel_deps="nvdec"
2725 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_vaapi_hwaccel_deps="vaapi"
2727 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_vdpau_hwaccel_deps="vdpau"
2729 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2731 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_xvmc_hwaccel_deps="xvmc"
2733 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2734 mpeg4_nvdec_hwaccel_deps="nvdec"
2735 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2736 mpeg4_vaapi_hwaccel_deps="vaapi"
2737 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2738 mpeg4_vdpau_hwaccel_deps="vdpau"
2739 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2740 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2741 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2742 vc1_d3d11va_hwaccel_deps="d3d11va"
2743 vc1_d3d11va_hwaccel_select="vc1_decoder"
2744 vc1_d3d11va2_hwaccel_deps="d3d11va"
2745 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2746 vc1_dxva2_hwaccel_deps="dxva2"
2747 vc1_dxva2_hwaccel_select="vc1_decoder"
2748 vc1_nvdec_hwaccel_deps="nvdec"
2749 vc1_nvdec_hwaccel_select="vc1_decoder"
2750 vc1_vaapi_hwaccel_deps="vaapi"
2751 vc1_vaapi_hwaccel_select="vc1_decoder"
2752 vc1_vdpau_hwaccel_deps="vdpau"
2753 vc1_vdpau_hwaccel_select="vc1_decoder"
2754 vp8_nvdec_hwaccel_deps="nvdec"
2755 vp8_nvdec_hwaccel_select="vp8_decoder"
2756 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2757 vp8_vaapi_hwaccel_select="vp8_decoder"
2758 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2759 vp9_d3d11va_hwaccel_select="vp9_decoder"
2760 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2761 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2762 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2763 vp9_dxva2_hwaccel_select="vp9_decoder"
2764 vp9_nvdec_hwaccel_deps="nvdec"
2765 vp9_nvdec_hwaccel_select="vp9_decoder"
2766 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2767 vp9_vaapi_hwaccel_select="vp9_decoder"
2768 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2769 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2770 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2771 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2772 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2773 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2774
2775 # hardware-accelerated codecs
2776 omx_deps="libdl pthreads"
2777 omx_rpi_select="omx"
2778 qsv_deps="libmfx"
2779 qsvdec_select="qsv"
2780 qsvenc_select="qsv"
2781 qsvvpp_select="qsv"
2782 vaapi_encode_deps="vaapi"
2783 v4l2_m2m_deps_any="linux_videodev2_h"
2784
2785 hwupload_cuda_filter_deps="cuda"
2786 scale_npp_filter_deps="cuda libnpp"
2787 scale_cuda_filter_deps="cuda_sdk"
2788 thumbnail_cuda_filter_deps="cuda_sdk"
2789
2790 amf_deps_any="libdl LoadLibrary"
2791 nvenc_deps="cuda"
2792 nvenc_deps_any="libdl LoadLibrary"
2793 nvenc_encoder_deps="nvenc"
2794
2795 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2796 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2797 h264_amf_encoder_deps="amf"
2798 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2799 h264_cuvid_decoder_deps="cuvid"
2800 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2801 h264_mediacodec_decoder_deps="mediacodec"
2802 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2803 h264_mmal_decoder_deps="mmal"
2804 h264_nvenc_encoder_deps="nvenc"
2805 h264_omx_encoder_deps="omx"
2806 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2807 h264_qsv_encoder_select="qsvenc"
2808 h264_rkmpp_decoder_deps="rkmpp"
2809 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2810 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2811 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2812 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2813 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 hevc_amf_encoder_deps="amf"
2815 hevc_cuvid_decoder_deps="cuvid"
2816 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2817 hevc_mediacodec_decoder_deps="mediacodec"
2818 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2819 hevc_nvenc_encoder_deps="nvenc"
2820 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2821 hevc_qsv_encoder_select="hevcparse qsvenc"
2822 hevc_rkmpp_decoder_deps="rkmpp"
2823 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2824 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2825 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2826 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2827 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 mjpeg_cuvid_decoder_deps="cuvid"
2829 mjpeg_qsv_encoder_deps="libmfx"
2830 mjpeg_qsv_encoder_select="qsvenc"
2831 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2832 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2833 mpeg1_cuvid_decoder_deps="cuvid"
2834 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2835 mpeg2_crystalhd_decoder_select="crystalhd"
2836 mpeg2_cuvid_decoder_deps="cuvid"
2837 mpeg2_mmal_decoder_deps="mmal"
2838 mpeg2_mediacodec_decoder_deps="mediacodec"
2839 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2840 mpeg2_qsv_encoder_select="qsvenc"
2841 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2842 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2843 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2844 mpeg4_crystalhd_decoder_select="crystalhd"
2845 mpeg4_cuvid_decoder_deps="cuvid"
2846 mpeg4_mediacodec_decoder_deps="mediacodec"
2847 mpeg4_mmal_decoder_deps="mmal"
2848 mpeg4_omx_encoder_deps="omx"
2849 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2850 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 msmpeg4_crystalhd_decoder_select="crystalhd"
2852 nvenc_h264_encoder_select="h264_nvenc_encoder"
2853 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2854 vc1_crystalhd_decoder_select="crystalhd"
2855 vc1_cuvid_decoder_deps="cuvid"
2856 vc1_mmal_decoder_deps="mmal"
2857 vc1_qsv_decoder_select="qsvdec vc1_parser"
2858 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2859 vp8_cuvid_decoder_deps="cuvid"
2860 vp8_mediacodec_decoder_deps="mediacodec"
2861 vp8_qsv_decoder_select="qsvdec vp8_parser"
2862 vp8_rkmpp_decoder_deps="rkmpp"
2863 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2864 vp8_vaapi_encoder_select="vaapi_encode"
2865 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2866 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp9_cuvid_decoder_deps="cuvid"
2868 vp9_mediacodec_decoder_deps="mediacodec"
2869 vp9_rkmpp_decoder_deps="rkmpp"
2870 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2871 vp9_vaapi_encoder_select="vaapi_encode"
2872 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2873 wmv3_crystalhd_decoder_select="crystalhd"
2874
2875 # parsers
2876 aac_parser_select="adts_header"
2877 h264_parser_select="golomb h264dsp h264parse"
2878 hevc_parser_select="hevcparse"
2879 mpegaudio_parser_select="mpegaudioheader"
2880 mpegvideo_parser_select="mpegvideo"
2881 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2882 vc1_parser_select="vc1dsp"
2883
2884 # bitstream_filters
2885 aac_adtstoasc_bsf_select="adts_header"
2886 h264_metadata_bsf_select="cbs_h264"
2887 h264_redundant_pps_bsf_select="cbs_h264"
2888 hevc_metadata_bsf_select="cbs_h265"
2889 mjpeg2jpeg_bsf_select="jpegtables"
2890 mpeg2_metadata_bsf_select="cbs_mpeg2"
2891 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2892
2893 # external libraries
2894 aac_at_decoder_deps="audiotoolbox"
2895 aac_at_decoder_select="aac_adtstoasc_bsf"
2896 ac3_at_decoder_deps="audiotoolbox"
2897 ac3_at_decoder_select="ac3_parser"
2898 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2899 alac_at_decoder_deps="audiotoolbox"
2900 amr_nb_at_decoder_deps="audiotoolbox"
2901 avisynth_deps_any="libdl LoadLibrary"
2902 avisynth_demuxer_deps="avisynth"
2903 avisynth_demuxer_select="riffdec"
2904 eac3_at_decoder_deps="audiotoolbox"
2905 eac3_at_decoder_select="ac3_parser"
2906 gsm_ms_at_decoder_deps="audiotoolbox"
2907 ilbc_at_decoder_deps="audiotoolbox"
2908 mp1_at_decoder_deps="audiotoolbox"
2909 mp2_at_decoder_deps="audiotoolbox"
2910 mp3_at_decoder_deps="audiotoolbox"
2911 mp1_at_decoder_select="mpegaudioheader"
2912 mp2_at_decoder_select="mpegaudioheader"
2913 mp3_at_decoder_select="mpegaudioheader"
2914 pcm_alaw_at_decoder_deps="audiotoolbox"
2915 pcm_mulaw_at_decoder_deps="audiotoolbox"
2916 qdmc_at_decoder_deps="audiotoolbox"
2917 qdm2_at_decoder_deps="audiotoolbox"
2918 aac_at_encoder_deps="audiotoolbox"
2919 aac_at_encoder_select="audio_frame_queue"
2920 alac_at_encoder_deps="audiotoolbox"
2921 alac_at_encoder_select="audio_frame_queue"
2922 ilbc_at_encoder_deps="audiotoolbox"
2923 ilbc_at_encoder_select="audio_frame_queue"
2924 pcm_alaw_at_encoder_deps="audiotoolbox"
2925 pcm_alaw_at_encoder_select="audio_frame_queue"
2926 pcm_mulaw_at_encoder_deps="audiotoolbox"
2927 pcm_mulaw_at_encoder_select="audio_frame_queue"
2928 chromaprint_muxer_deps="chromaprint"
2929 h264_videotoolbox_encoder_deps="pthreads"
2930 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2931 hevc_videotoolbox_encoder_deps="pthreads"
2932 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2933 libcelt_decoder_deps="libcelt"
2934 libfdk_aac_decoder_deps="libfdk_aac"
2935 libfdk_aac_encoder_deps="libfdk_aac"
2936 libfdk_aac_encoder_select="audio_frame_queue"
2937 libgme_demuxer_deps="libgme"
2938 libgsm_decoder_deps="libgsm"
2939 libgsm_encoder_deps="libgsm"
2940 libgsm_ms_decoder_deps="libgsm"
2941 libgsm_ms_encoder_deps="libgsm"
2942 libilbc_decoder_deps="libilbc"
2943 libilbc_encoder_deps="libilbc"
2944 libkvazaar_encoder_deps="libkvazaar"
2945 libmodplug_demuxer_deps="libmodplug"
2946 libmp3lame_encoder_deps="libmp3lame"
2947 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2948 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2949 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2950 libopencore_amrnb_encoder_select="audio_frame_queue"
2951 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2952 libopenh264_decoder_deps="libopenh264"
2953 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2954 libopenh264_encoder_deps="libopenh264"
2955 libopenjpeg_decoder_deps="libopenjpeg"
2956 libopenjpeg_encoder_deps="libopenjpeg"
2957 libopenmpt_demuxer_deps="libopenmpt"
2958 libopus_decoder_deps="libopus"
2959 libopus_encoder_deps="libopus"
2960 libopus_encoder_select="audio_frame_queue"
2961 librsvg_decoder_deps="librsvg"
2962 libshine_encoder_deps="libshine"
2963 libshine_encoder_select="audio_frame_queue"
2964 libspeex_decoder_deps="libspeex"
2965 libspeex_encoder_deps="libspeex"
2966 libspeex_encoder_select="audio_frame_queue"
2967 libtheora_encoder_deps="libtheora"
2968 libtwolame_encoder_deps="libtwolame"
2969 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2970 libvorbis_decoder_deps="libvorbis"
2971 libvorbis_encoder_deps="libvorbis libvorbisenc"
2972 libvorbis_encoder_select="audio_frame_queue"
2973 libvpx_vp8_decoder_deps="libvpx"
2974 libvpx_vp8_encoder_deps="libvpx"
2975 libvpx_vp9_decoder_deps="libvpx"
2976 libvpx_vp9_encoder_deps="libvpx"
2977 libwavpack_encoder_deps="libwavpack"
2978 libwavpack_encoder_select="audio_frame_queue"
2979 libwebp_encoder_deps="libwebp"
2980 libwebp_anim_encoder_deps="libwebp"
2981 libx262_encoder_deps="libx262"
2982 libx264_encoder_deps="libx264"
2983 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2984 libx264rgb_encoder_select="libx264_encoder"
2985 libx265_encoder_deps="libx265"
2986 libxavs_encoder_deps="libxavs"
2987 libxvid_encoder_deps="libxvid"
2988 libzvbi_teletext_decoder_deps="libzvbi"
2989 videotoolbox_suggest="coreservices"
2990 videotoolbox_deps="corefoundation coremedia corevideo"
2991 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2992
2993 # demuxers / muxers
2994 ac3_demuxer_select="ac3_parser"
2995 aiff_muxer_select="iso_media"
2996 asf_demuxer_select="riffdec"
2997 asf_o_demuxer_select="riffdec"
2998 asf_muxer_select="riffenc"
2999 asf_stream_muxer_select="asf_muxer"
3000 avi_demuxer_select="iso_media riffdec exif"
3001 avi_muxer_select="riffenc"
3002 caf_demuxer_select="iso_media riffdec"
3003 caf_muxer_select="iso_media"
3004 dash_muxer_select="mp4_muxer"
3005 dash_demuxer_deps="libxml2"
3006 dirac_demuxer_select="dirac_parser"
3007 dts_demuxer_select="dca_parser"
3008 dtshd_demuxer_select="dca_parser"
3009 dv_demuxer_select="dvprofile"
3010 dv_muxer_select="dvprofile"
3011 dxa_demuxer_select="riffdec"
3012 eac3_demuxer_select="ac3_parser"
3013 f4v_muxer_select="mov_muxer"
3014 fifo_muxer_deps="threads"
3015 flac_demuxer_select="flac_parser"
3016 hds_muxer_select="flv_muxer"
3017 hls_muxer_select="mpegts_muxer"
3018 hls_muxer_suggest="gcrypt openssl"
3019 image2_alias_pix_demuxer_select="image2_demuxer"
3020 image2_brender_pix_demuxer_select="image2_demuxer"
3021 ipod_muxer_select="mov_muxer"
3022 ismv_muxer_select="mov_muxer"
3023 matroska_audio_muxer_select="matroska_muxer"
3024 matroska_demuxer_select="iso_media riffdec"
3025 matroska_demuxer_suggest="bzlib lzo zlib"
3026 matroska_muxer_select="iso_media riffenc"
3027 mmf_muxer_select="riffenc"
3028 mov_demuxer_select="iso_media riffdec"
3029 mov_demuxer_suggest="zlib"
3030 mov_muxer_select="iso_media riffenc rtpenc_chain"
3031 mp3_demuxer_select="mpegaudio_parser"
3032 mp3_muxer_select="mpegaudioheader"
3033 mp4_muxer_select="mov_muxer"
3034 mpegts_demuxer_select="iso_media"
3035 mpegts_muxer_select="adts_muxer latm_muxer"
3036 mpegtsraw_demuxer_select="mpegts_demuxer"
3037 mxf_d10_muxer_select="mxf_muxer"
3038 mxf_opatom_muxer_select="mxf_muxer"
3039 nut_muxer_select="riffenc"
3040 nuv_demuxer_select="riffdec"
3041 oga_muxer_select="ogg_muxer"
3042 ogg_demuxer_select="dirac_parse"
3043 ogv_muxer_select="ogg_muxer"
3044 opus_muxer_select="ogg_muxer"
3045 psp_muxer_select="mov_muxer"
3046 rtp_demuxer_select="sdp_demuxer"
3047 rtp_muxer_select="golomb"
3048 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3049 rtsp_demuxer_select="http_protocol rtpdec"
3050 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3051 sap_demuxer_select="sdp_demuxer"
3052 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3053 sdp_demuxer_select="rtpdec"
3054 smoothstreaming_muxer_select="ismv_muxer"
3055 spdif_demuxer_select="adts_header"
3056 spdif_muxer_select="adts_header"
3057 spx_muxer_select="ogg_muxer"
3058 swf_demuxer_suggest="zlib"
3059 tak_demuxer_select="tak_parser"
3060 tg2_muxer_select="mov_muxer"
3061 tgp_muxer_select="mov_muxer"
3062 vobsub_demuxer_select="mpegps_demuxer"
3063 w64_demuxer_select="wav_demuxer"
3064 w64_muxer_select="wav_muxer"
3065 wav_demuxer_select="riffdec"
3066 wav_muxer_select="riffenc"
3067 webm_muxer_select="iso_media riffenc"
3068 webm_dash_manifest_demuxer_select="matroska_demuxer"
3069 wtv_demuxer_select="mpegts_demuxer riffdec"
3070 wtv_muxer_select="mpegts_muxer riffenc"
3071 xmv_demuxer_select="riffdec"
3072 xwma_demuxer_select="riffdec"
3073
3074 # indevs / outdevs
3075 alsa_indev_deps="alsa"
3076 alsa_outdev_deps="alsa"
3077 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3078 avfoundation_indev_suggest="coregraphics applicationservices"
3079 avfoundation_indev_extralibs="-framework Foundation"
3080 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3081 caca_outdev_deps="libcaca"
3082 decklink_deps_any="libdl LoadLibrary"
3083 decklink_indev_deps="decklink threads"
3084 decklink_indev_extralibs="-lstdc++"
3085 decklink_outdev_deps="decklink threads"
3086 decklink_outdev_extralibs="-lstdc++"
3087 libndi_newtek_indev_deps="libndi_newtek"
3088 libndi_newtek_indev_extralibs="-lndi"
3089 libndi_newtek_outdev_deps="libndi_newtek"
3090 libndi_newtek_outdev_extralibs="-lndi"
3091 dshow_indev_deps="IBaseFilter"
3092 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3093 fbdev_indev_deps="linux_fb_h"
3094 fbdev_outdev_deps="linux_fb_h"
3095 gdigrab_indev_deps="CreateDIBSection"
3096 gdigrab_indev_extralibs="-lgdi32"
3097 gdigrab_indev_select="bmp_decoder"
3098 iec61883_indev_deps="libiec61883"
3099 jack_indev_deps="libjack"
3100 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3101 kmsgrab_indev_deps="libdrm"
3102 lavfi_indev_deps="avfilter"
3103 libcdio_indev_deps="libcdio"
3104 libdc1394_indev_deps="libdc1394"
3105 openal_indev_deps="openal"
3106 opengl_outdev_deps="opengl"
3107 oss_indev_deps_any="sys_soundcard_h"
3108 oss_outdev_deps_any="sys_soundcard_h"
3109 pulse_indev_deps="libpulse"
3110 pulse_outdev_deps="libpulse"
3111 sdl2_outdev_deps="sdl2"
3112 sndio_indev_deps="sndio"
3113 sndio_outdev_deps="sndio"
3114 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3115 v4l2_indev_suggest="libv4l2"
3116 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3117 v4l2_outdev_suggest="libv4l2"
3118 vfwcap_indev_deps="vfw32 vfwcap_defines"
3119 xcbgrab_indev_deps="libxcb"
3120 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3121 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3122 xv_outdev_extralibs="-lXv -lX11 -lXext"
3123
3124 # protocols
3125 async_protocol_deps="threads"
3126 bluray_protocol_deps="libbluray"
3127 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3128 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3129 ffrtmpcrypt_protocol_select="tcp_protocol"
3130 ffrtmphttp_protocol_conflict="librtmp_protocol"
3131 ffrtmphttp_protocol_select="http_protocol"
3132 ftp_protocol_select="tcp_protocol"
3133 gopher_protocol_select="network"
3134 http_protocol_select="tcp_protocol"
3135 http_protocol_suggest="zlib"
3136 httpproxy_protocol_select="tcp_protocol"
3137 httpproxy_protocol_suggest="zlib"
3138 https_protocol_select="tls_protocol"
3139 https_protocol_suggest="zlib"
3140 icecast_protocol_select="http_protocol"
3141 librtmp_protocol_deps="librtmp"
3142 librtmpe_protocol_deps="librtmp"
3143 librtmps_protocol_deps="librtmp"
3144 librtmpt_protocol_deps="librtmp"
3145 librtmpte_protocol_deps="librtmp"
3146 libsmbclient_protocol_deps="libsmbclient gplv3"
3147 libssh_protocol_deps="libssh"
3148 libtls_conflict="openssl gnutls"
3149 mmsh_protocol_select="http_protocol"
3150 mmst_protocol_select="network"
3151 rtmp_protocol_conflict="librtmp_protocol"
3152 rtmp_protocol_select="tcp_protocol"
3153 rtmp_protocol_suggest="zlib"
3154 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3155 rtmpe_protocol_suggest="zlib"
3156 rtmps_protocol_conflict="librtmp_protocol"
3157 rtmps_protocol_select="tls_protocol"
3158 rtmps_protocol_suggest="zlib"
3159 rtmpt_protocol_select="ffrtmphttp_protocol"
3160 rtmpt_protocol_suggest="zlib"
3161 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3162 rtmpte_protocol_suggest="zlib"
3163 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3164 rtmpts_protocol_suggest="zlib"
3165 rtp_protocol_select="udp_protocol"
3166 schannel_conflict="openssl gnutls libtls"
3167 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3168 sctp_protocol_select="network"
3169 securetransport_conflict="openssl gnutls libtls"
3170 srtp_protocol_select="rtp_protocol srtp"
3171 tcp_protocol_select="network"
3172 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3173 tls_protocol_select="tcp_protocol"
3174 udp_protocol_select="network"
3175 udplite_protocol_select="network"
3176 unix_protocol_deps="sys_un_h"
3177 unix_protocol_select="network"
3178
3179 # filters
3180 afftfilt_filter_deps="avcodec"
3181 afftfilt_filter_select="fft"
3182 afir_filter_deps="avcodec"
3183 afir_filter_select="fft"
3184 amovie_filter_deps="avcodec avformat"
3185 aresample_filter_deps="swresample"
3186 ass_filter_deps="libass"
3187 atempo_filter_deps="avcodec"
3188 atempo_filter_select="rdft"
3189 azmq_filter_deps="libzmq"
3190 blackframe_filter_deps="gpl"
3191 boxblur_filter_deps="gpl"
3192 bs2b_filter_deps="libbs2b"
3193 colormatrix_filter_deps="gpl"
3194 convolve_filter_deps="avcodec"
3195 convolve_filter_select="fft"
3196 coreimage_filter_deps="coreimage appkit"
3197 coreimage_filter_extralibs="-framework OpenGL"
3198 coreimagesrc_filter_deps="coreimage appkit"
3199 coreimagesrc_filter_extralibs="-framework OpenGL"
3200 cover_rect_filter_deps="avcodec avformat gpl"
3201 cropdetect_filter_deps="gpl"
3202 deconvolve_filter_deps="avcodec"
3203 deconvolve_filter_select="fft"
3204 deinterlace_qsv_filter_deps="libmfx"
3205 deinterlace_vaapi_filter_deps="vaapi"
3206 delogo_filter_deps="gpl"
3207 deshake_filter_select="pixelutils"
3208 drawtext_filter_deps="libfreetype"
3209 drawtext_filter_suggest="libfontconfig libfribidi"
3210 elbg_filter_deps="avcodec"
3211 eq_filter_deps="gpl"
3212 fftfilt_filter_deps="avcodec"
3213 fftfilt_filter_select="rdft"
3214 find_rect_filter_deps="avcodec avformat gpl"
3215 firequalizer_filter_deps="avcodec"
3216 firequalizer_filter_select="rdft"
3217 flite_filter_deps="libflite"
3218 framerate_filter_select="pixelutils"
3219 frei0r_filter_deps="frei0r libdl"
3220 frei0r_src_filter_deps="frei0r libdl"
3221 fspp_filter_deps="gpl"
3222 geq_filter_deps="gpl"
3223 histeq_filter_deps="gpl"
3224 hqdn3d_filter_deps="gpl"
3225 interlace_filter_deps="gpl"
3226 kerndeint_filter_deps="gpl"
3227 ladspa_filter_deps="ladspa libdl"
3228 lv2_filter_deps="lv2"
3229 mcdeint_filter_deps="avcodec gpl"
3230 movie_filter_deps="avcodec avformat"
3231 mpdecimate_filter_deps="gpl"
3232 mpdecimate_filter_select="pixelutils"
3233 mptestsrc_filter_deps="gpl"
3234 negate_filter_deps="lut_filter"
3235 nnedi_filter_deps="gpl"
3236 ocr_filter_deps="libtesseract"
3237 ocv_filter_deps="libopencv"
3238 openclsrc_filter_deps="opencl"
3239 overlay_opencl_filter_deps="opencl"
3240 overlay_qsv_filter_deps="libmfx"
3241 overlay_qsv_filter_select="qsvvpp"
3242 owdenoise_filter_deps="gpl"
3243 pan_filter_deps="swresample"
3244 perspective_filter_deps="gpl"
3245 phase_filter_deps="gpl"
3246 pp7_filter_deps="gpl"
3247 pp_filter_deps="gpl postproc"
3248 program_opencl_filter_deps="opencl"
3249 pullup_filter_deps="gpl"
3250 removelogo_filter_deps="avcodec avformat swscale"
3251 repeatfields_filter_deps="gpl"
3252 resample_filter_deps="avresample"
3253 rubberband_filter_deps="librubberband"
3254 sab_filter_deps="gpl swscale"
3255 scale2ref_filter_deps="swscale"
3256 scale_filter_deps="swscale"
3257 scale_qsv_filter_deps="libmfx"
3258 select_filter_select="pixelutils"
3259 showcqt_filter_deps="avcodec avformat swscale"
3260 showcqt_filter_suggest="libfontconfig libfreetype"
3261 showcqt_filter_select="fft"
3262 showfreqs_filter_deps="avcodec"
3263 showfreqs_filter_select="fft"
3264 showspectrum_filter_deps="avcodec"
3265 showspectrum_filter_select="fft"
3266 showspectrumpic_filter_deps="avcodec"
3267 showspectrumpic_filter_select="fft"
3268 signature_filter_deps="gpl avcodec avformat"
3269 smartblur_filter_deps="gpl swscale"
3270 sofalizer_filter_deps="libmysofa avcodec"
3271 sofalizer_filter_select="fft"
3272 spectrumsynth_filter_deps="avcodec"
3273 spectrumsynth_filter_select="fft"
3274 spp_filter_deps="gpl avcodec"
3275 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3276 stereo3d_filter_deps="gpl"
3277 subtitles_filter_deps="avformat avcodec libass"
3278 super2xsai_filter_deps="gpl"
3279 pixfmts_super2xsai_test_deps="super2xsai_filter"
3280 tinterlace_filter_deps="gpl"
3281 tinterlace_merge_test_deps="tinterlace_filter"
3282 tinterlace_pad_test_deps="tinterlace_filter"
3283 tonemap_filter_deps="const_nan"
3284 unsharp_opencl_filter_deps="opencl"
3285 uspp_filter_deps="gpl avcodec"
3286 vaguedenoiser_filter_deps="gpl"
3287 vidstabdetect_filter_deps="libvidstab"
3288 vidstabtransform_filter_deps="libvidstab"
3289 libvmaf_filter_deps="libvmaf pthreads"
3290 zmq_filter_deps="libzmq"
3291 zoompan_filter_deps="swscale"
3292 zscale_filter_deps="libzimg const_nan"
3293 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3294 vpp_qsv_filter_deps="libmfx"
3295 vpp_qsv_filter_select="qsvvpp"
3296
3297 # examples
3298 avio_dir_cmd_deps="avformat avutil"
3299 avio_reading_deps="avformat avcodec avutil"
3300 decode_audio_example_deps="avcodec avutil"
3301 decode_video_example_deps="avcodec avutil"
3302 demuxing_decoding_example_deps="avcodec avformat avutil"
3303 encode_audio_example_deps="avcodec avutil"
3304 encode_video_example_deps="avcodec avutil"
3305 extract_mvs_example_deps="avcodec avformat avutil"
3306 filter_audio_example_deps="avfilter avutil"
3307 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3308 filtering_video_example_deps="avfilter avcodec avformat avutil"
3309 http_multiclient_example_deps="avformat avutil fork"
3310 hw_decode_example_deps="avcodec avformat avutil"
3311 metadata_example_deps="avformat avutil"
3312 muxing_example_deps="avcodec avformat avutil swscale"
3313 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3314 remuxing_example_deps="avcodec avformat avutil"
3315 resampling_audio_example_deps="avutil swresample"
3316 scaling_video_example_deps="avutil swscale"
3317 transcode_aac_example_deps="avcodec avformat swresample"
3318 transcoding_example_deps="avfilter avcodec avformat avutil"
3319 vaapi_encode_example_deps="avcodec avutil"
3320
3321 # EXTRALIBS_LIST
3322 cpu_init_extralibs="pthreads_extralibs"
3323 cws2fws_extralibs="zlib_extralibs"
3324
3325 # libraries, in linking order
3326 avcodec_deps="avutil"
3327 avcodec_suggest="libm"
3328 avcodec_select="null_bsf"
3329 avdevice_deps="avformat avcodec avutil"
3330 avdevice_suggest="libm"
3331 avfilter_deps="avutil"
3332 avfilter_suggest="libm"
3333 avformat_deps="avcodec avutil"
3334 avformat_suggest="libm network zlib"
3335 avresample_deps="avutil"
3336 avresample_suggest="libm"
3337 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3338 postproc_deps="avutil gpl"
3339 postproc_suggest="libm"
3340 swresample_deps="avutil"
3341 swresample_suggest="libm libsoxr"
3342 swscale_deps="avutil"
3343 swscale_suggest="libm"
3344
3345 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3346 avfilter_extralibs="pthreads_extralibs"
3347 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3348
3349 # programs
3350 ffmpeg_deps="avcodec avfilter avformat swresample"
3351 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3352                null_filter
3353                trim_filter"
3354 ffmpeg_suggest="ole32 psapi shell32"
3355 ffplay_deps="avcodec avformat swscale swresample sdl2"
3356 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3357 ffplay_suggest="shell32"
3358 ffprobe_deps="avcodec avformat"
3359 ffprobe_suggest="shell32"
3360
3361 # documentation
3362 podpages_deps="perl"
3363 manpages_deps="perl pod2man"
3364 htmlpages_deps="perl"
3365 htmlpages_deps_any="makeinfo_html texi2html"
3366 txtpages_deps="perl makeinfo"
3367 doc_deps_any="manpages htmlpages podpages txtpages"
3368
3369 # default parameters
3370
3371 logfile="ffbuild/config.log"
3372
3373 # installation paths
3374 prefix_default="/usr/local"
3375 bindir_default='${prefix}/bin'
3376 datadir_default='${prefix}/share/ffmpeg'
3377 docdir_default='${prefix}/share/doc/ffmpeg'
3378 incdir_default='${prefix}/include'
3379 libdir_default='${prefix}/lib'
3380 mandir_default='${prefix}/share/man'
3381
3382 # toolchain
3383 ar_default="ar"
3384 cc_default="gcc"
3385 cxx_default="g++"
3386 host_cc_default="gcc"
3387 doxygen_default="doxygen"
3388 install="install"
3389 ln_s_default="ln -s -f"
3390 nm_default="nm -g"
3391 pkg_config_default=pkg-config
3392 ranlib_default="ranlib"
3393 strip_default="strip"
3394 version_script='--version-script'
3395 objformat="elf32"
3396 x86asmexe_default="nasm"
3397 windres_default="windres"
3398 nvcc_default="nvcc"
3399 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3400 striptype="direct"
3401
3402 # OS
3403 target_os_default=$(tolower $(uname -s))
3404 host_os=$target_os_default
3405
3406 # machine
3407 if test "$target_os_default" = aix; then
3408     arch_default=$(uname -p)
3409     strip_default="strip -X32_64"
3410 else
3411     arch_default=$(uname -m)
3412 fi
3413 cpu="generic"
3414 intrinsics="none"
3415
3416 # configurable options
3417 enable $PROGRAM_LIST
3418 enable $DOCUMENT_LIST
3419 enable $EXAMPLE_LIST
3420 enable $(filter_out avresample $LIBRARY_LIST)
3421 enable stripping
3422
3423 enable asm
3424 enable debug
3425 enable doc
3426 enable faan faandct faanidct
3427 enable optimizations
3428 enable runtime_cpudetect
3429 enable safe_bitstream_reader
3430 enable static
3431 enable swscale_alpha
3432 enable valgrind_backtrace
3433
3434 sws_max_filter_size_default=256
3435 set_default sws_max_filter_size
3436
3437 # internal components are enabled by default
3438 enable $EXTRALIBS_LIST
3439
3440 # Avoid external, non-system, libraries getting enabled by dependency resolution
3441 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3442
3443 # build settings
3444 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3445 LIBPREF="lib"
3446 LIBSUF=".a"
3447 FULLNAME='$(NAME)$(BUILDSUF)'
3448 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3449 SLIBPREF="lib"
3450 SLIBSUF=".so"
3451 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3452 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3453 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3454 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3455 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3456 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3457 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3458
3459 asflags_filter=echo
3460 cflags_filter=echo
3461 ldflags_filter=echo
3462
3463 AS_C='-c'
3464 AS_O='-o $@'
3465 CC_C='-c'
3466 CC_E='-E -o $@'
3467 CC_O='-o $@'
3468 CXX_C='-c'
3469 CXX_O='-o $@'
3470 OBJCC_C='-c'
3471 OBJCC_E='-E -o $@'
3472 OBJCC_O='-o $@'
3473 X86ASM_O='-o $@'
3474 LD_O='-o $@'
3475 LD_LIB='-l%'
3476 LD_PATH='-L'
3477 HOSTCC_C='-c'
3478 HOSTCC_E='-E -o $@'
3479 HOSTCC_O='-o $@'
3480 HOSTLD_O='-o $@'
3481 NVCC_C='-c'
3482 NVCC_O='-o $@'
3483
3484 host_extralibs='-lm'
3485 host_cflags_filter=echo
3486 host_ldflags_filter=echo
3487
3488 target_path='$(CURDIR)'
3489
3490 # since the object filename is not given with the -MM flag, the compiler
3491 # is only able to print the basename, and we must add the path ourselves
3492 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3493 DEPFLAGS='-MM'
3494
3495 mkdir -p ffbuild
3496
3497 # find source path
3498 if test -f configure; then
3499     source_path=.
3500 else
3501     source_path=$(cd $(dirname "$0"); pwd)
3502     case "$source_path" in
3503         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3504     esac
3505     test -e "$source_path/config.h" &&
3506         die "Out of tree builds are impossible with config.h in source dir."
3507 fi
3508
3509 for v in "$@"; do
3510     r=${v#*=}
3511     l=${v%"$r"}
3512     r=$(sh_quote "$r")
3513     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3514 done
3515
3516 find_things(){
3517     thing=$1
3518     pattern=$2
3519     file=$source_path/$3
3520     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3521 }
3522
3523 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3524 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3525 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3526 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3527 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3528 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3529 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3530 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3531
3532 find_things_extern(){
3533     thing=$1
3534     pattern=$2
3535     file=$source_path/$3
3536     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3537 }
3538
3539 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3540 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3541 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3542
3543 AVCODEC_COMPONENTS_LIST="
3544     $BSF_LIST
3545     $DECODER_LIST
3546     $ENCODER_LIST
3547     $HWACCEL_LIST
3548     $PARSER_LIST
3549 "
3550
3551 AVDEVICE_COMPONENTS_LIST="
3552     $INDEV_LIST
3553     $OUTDEV_LIST
3554 "
3555
3556 AVFILTER_COMPONENTS_LIST="
3557     $FILTER_LIST
3558 "
3559
3560 AVFORMAT_COMPONENTS_LIST="
3561     $DEMUXER_LIST
3562     $MUXER_LIST
3563     $PROTOCOL_LIST
3564 "
3565
3566 ALL_COMPONENTS="
3567     $AVCODEC_COMPONENTS_LIST
3568     $AVDEVICE_COMPONENTS_LIST
3569     $AVFILTER_COMPONENTS_LIST
3570     $AVFORMAT_COMPONENTS_LIST
3571 "
3572
3573 for n in $COMPONENT_LIST; do
3574     v=$(toupper ${n%s})_LIST
3575     eval enable \$$v
3576     eval ${n}_if_any="\$$v"
3577 done
3578
3579 enable $ARCH_EXT_LIST
3580
3581 die_unknown(){
3582     echo "Unknown option \"$1\"."
3583     echo "See $0 --help for available options."
3584     exit 1
3585 }
3586
3587 print_in_columns() {
3588     cols=$(expr $ncols / 24)
3589     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3590 }
3591
3592 show_list() {
3593     suffix=_$1
3594     shift
3595     echo $* | sed s/$suffix//g | print_in_columns
3596     exit 0
3597 }
3598
3599 rand_list(){
3600     IFS=', '
3601     set -- $*
3602     unset IFS
3603     for thing; do
3604         comp=${thing%:*}
3605         prob=${thing#$comp}
3606         prob=${prob#:}
3607         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3608         echo "prob ${prob:-0.5}"
3609         printf '%s\n' $comp
3610     done
3611 }
3612
3613 do_random(){
3614     action=$1
3615     shift
3616     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3617     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3618 }
3619
3620 for opt do
3621     optval="${opt#*=}"
3622     case "$opt" in
3623         --extra-ldflags=*)
3624             add_ldflags $optval
3625         ;;
3626         --extra-ldexeflags=*)
3627             add_ldexeflags $optval
3628         ;;
3629         --extra-ldsoflags=*)
3630             add_ldsoflags $optval
3631         ;;
3632         --extra-ldlibflags=*)
3633             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3634                  "removed in the future. Use --extra-ldsoflags instead."
3635             add_ldsoflags $optval
3636         ;;
3637         --extra-libs=*)
3638             add_extralibs $optval
3639         ;;
3640         --disable-devices)
3641             disable $INDEV_LIST $OUTDEV_LIST
3642         ;;
3643         --enable-debug=*)
3644             debuglevel="$optval"
3645         ;;
3646         --disable-programs)
3647             disable $PROGRAM_LIST
3648         ;;
3649         --disable-everything)
3650             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3651         ;;
3652         --disable-all)
3653             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3654             disable $LIBRARY_LIST $PROGRAM_LIST doc
3655             enable avutil
3656         ;;
3657         --enable-random|--disable-random)
3658             action=${opt%%-random}
3659             do_random ${action#--} $COMPONENT_LIST
3660         ;;
3661         --enable-random=*|--disable-random=*)
3662             action=${opt%%-random=*}
3663             do_random ${action#--} $optval
3664         ;;
3665         --enable-sdl)
3666             enable sdl2
3667         ;;
3668         --enable-*=*|--disable-*=*)
3669             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3670             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3671             eval list=\$$(toupper $thing)_LIST
3672             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3673             list=$(filter "$name" $list)
3674             [ "$list" = "" ] && warn "Option $opt did not match anything"
3675             $action $list
3676         ;;
3677         --enable-yasm|--disable-yasm)
3678             warn "The ${opt} option is only provided for compatibility and will be\n"\
3679                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3680             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3681         ;;
3682         --yasmexe=*)
3683             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3684                  "removed in the future. Use --x86asmexe instead."
3685             x86asmexe="$optval"
3686         ;;
3687         --enable-?*|--disable-?*)
3688             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3689             if is_in $option $COMPONENT_LIST; then
3690                 test $action = disable && action=unset
3691                 eval $action \$$(toupper ${option%s})_LIST
3692             elif is_in $option $CMDLINE_SELECT; then
3693                 $action $option
3694             else
3695                 die_unknown $opt
3696             fi
3697         ;;
3698         --list-*)
3699             NAME="${opt#--list-}"
3700             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3701             NAME=${NAME%s}
3702             eval show_list $NAME \$$(toupper $NAME)_LIST
3703         ;;
3704         --help|-h) show_help
3705         ;;
3706         --quiet|-q) quiet=yes
3707         ;;
3708         --fatal-warnings) enable fatal_warnings
3709         ;;
3710         --libfuzzer=*)
3711             libfuzzer_path="$optval"
3712         ;;
3713         *)
3714             optname="${opt%%=*}"
3715             optname="${optname#--}"
3716             optname=$(echo "$optname" | sed 's/-/_/g')
3717             if is_in $optname $CMDLINE_SET; then
3718                 eval $optname='$optval'
3719             elif is_in $optname $CMDLINE_APPEND; then
3720                 append $optname "$optval"
3721             else
3722                 die_unknown $opt
3723             fi
3724         ;;
3725     esac
3726 done
3727
3728 for e in $env; do
3729     eval "export $e"
3730 done
3731
3732 if disabled autodetect; then
3733
3734     # Unless iconv is explicitely disabled by the user, we still want to probe
3735     # for the iconv from the libc.
3736     disabled iconv || enable libc_iconv
3737
3738     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3739     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3740 fi
3741 # Mark specifically enabled, but normally autodetected libraries as requested.
3742 for lib in $AUTODETECT_LIBS; do
3743     enabled $lib && request $lib
3744 done
3745 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3746 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3747 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3748
3749 disabled logging && logfile=/dev/null
3750
3751 # command line configuration sanity checks
3752
3753 # we need to build at least one lib type
3754 if ! enabled_any static shared; then
3755     cat <<EOF
3756 At least one library type must be built.
3757 Specify --enable-static to build the static libraries or --enable-shared to
3758 build the shared libraries as well. To only build the shared libraries specify
3759 --disable-static in addition to --enable-shared.
3760 EOF
3761     exit 1
3762 fi
3763
3764 die_license_disabled() {
3765     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3766 }
3767
3768 die_license_disabled_gpl() {
3769     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3770 }
3771
3772 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3773 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3774
3775 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3776 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3777
3778 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3779
3780 enabled_all gnutls openssl &&
3781     die "GnuTLS and OpenSSL must not be enabled at the same time."
3782
3783 # Disable all the library-specific components if the library itself
3784 # is disabled, see AVCODEC_LIST and following _LIST variables.
3785
3786 disable_components(){
3787     disabled ${1} && disable $(
3788         eval components="\$$(toupper ${1})_COMPONENTS"
3789         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3790     )
3791 }
3792
3793 map 'disable_components $v' $LIBRARY_LIST
3794
3795 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3796 set >> $logfile
3797
3798 test -n "$valgrind" && toolchain="valgrind-memcheck"
3799
3800 enabled ossfuzz && {
3801     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3802     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3803 }
3804
3805 case "$toolchain" in
3806     *-asan)
3807         cc_default="${toolchain%-asan}"
3808         add_cflags  -fsanitize=address
3809         add_ldflags -fsanitize=address
3810     ;;
3811     *-msan)
3812         cc_default="${toolchain%-msan}"
3813         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3814         add_ldflags -fsanitize=memory
3815     ;;
3816     *-tsan)
3817         cc_default="${toolchain%-tsan}"
3818         add_cflags  -fsanitize=thread -fPIE
3819         add_ldflags -fsanitize=thread -pie
3820         case "$toolchain" in
3821             gcc-tsan)
3822                 add_cflags  -fPIC
3823                 add_ldflags -fPIC
3824                 ;;
3825         esac
3826     ;;
3827     *-usan)
3828         cc_default="${toolchain%-usan}"
3829         add_cflags  -fsanitize=undefined
3830         add_ldflags -fsanitize=undefined
3831     ;;
3832     valgrind-*)
3833         target_exec_default="valgrind"
3834         case "$toolchain" in
3835             valgrind-massif)
3836                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3837                 ;;
3838             valgrind-memcheck)
3839                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3840                 ;;
3841         esac
3842     ;;
3843     msvc)
3844         # Check whether the current MSVC version needs the C99 converter.
3845         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3846         # support enough of C99 to build ffmpeg. Default to the new
3847         # behaviour if the regexp was unable to match anything, since this
3848         # successfully parses the version number of existing supported
3849         # versions that require the converter (MSVC 2010 and 2012).
3850         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3851         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3852             cc_default="cl"
3853             cxx_default="cl"
3854         else
3855             cc_default="c99wrap cl"
3856             cxx_default="c99wrap cl"
3857         fi
3858         ld_default="$source_path/compat/windows/mslink"
3859         nm_default="dumpbin -symbols"
3860         ar_default="lib"
3861         case "$arch" in
3862         aarch64|arm64)
3863             as_default="armasm64"
3864             ;;
3865         arm*)
3866             as_default="armasm"
3867             ;;
3868         esac
3869         target_os_default="win32"
3870         # Use a relative path for TMPDIR. This makes sure all the
3871         # ffconf temp files are written with a relative path, avoiding
3872         # issues with msys/win32 path conversion for MSVC parameters
3873         # such as -Fo<file> or -out:<file>.
3874         TMPDIR=.
3875     ;;
3876     icl)
3877         cc_default="icl"
3878         ld_default="xilink"
3879         nm_default="dumpbin -symbols"
3880         ar_default="xilib"
3881         target_os_default="win32"
3882         TMPDIR=.
3883     ;;
3884     gcov)
3885         add_cflags  -fprofile-arcs -ftest-coverage
3886         add_ldflags -fprofile-arcs -ftest-coverage
3887     ;;
3888     llvm-cov)
3889         add_cflags -fprofile-arcs -ftest-coverage
3890         add_ldflags --coverage
3891     ;;
3892     hardened)
3893         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3894         add_cflags   -fno-strict-overflow -fstack-protector-all
3895         add_ldflags  -Wl,-z,relro -Wl,-z,now
3896         add_cflags   -fPIE
3897         add_ldexeflags -fPIE -pie
3898     ;;
3899     ?*)
3900         die "Unknown toolchain $toolchain"
3901     ;;
3902 esac
3903
3904 if test -n "$cross_prefix"; then
3905     test -n "$arch" && test -n "$target_os" ||
3906         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3907     enable cross_compile
3908 fi
3909
3910 ar_default="${cross_prefix}${ar_default}"
3911 cc_default="${cross_prefix}${cc_default}"
3912 cxx_default="${cross_prefix}${cxx_default}"
3913 nm_default="${cross_prefix}${nm_default}"
3914 pkg_config_default="${cross_prefix}${pkg_config_default}"
3915 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3916     ranlib_default="${cross_prefix}${ranlib_default} -D"
3917 else
3918     ranlib_default="${cross_prefix}${ranlib_default}"
3919 fi
3920 strip_default="${cross_prefix}${strip_default}"
3921 windres_default="${cross_prefix}${windres_default}"
3922
3923 sysinclude_default="${sysroot}/usr/include"
3924
3925 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3926     target_exec target_os x86asmexe nvcc
3927 enabled cross_compile || host_cc_default=$cc
3928 set_default host_cc
3929
3930 pkg_config_fail_message=""
3931 if ! $pkg_config --version >/dev/null 2>&1; then
3932     warn "$pkg_config not found, library detection may fail."
3933     pkg_config=false
3934 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3935     pkg_config_fail_message="
3936 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3937 fi
3938
3939 if test $doxygen != $doxygen_default && \
3940   ! $doxygen --version >/dev/null 2>&1; then
3941     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3942 fi
3943
3944 exesuf() {
3945     case $1 in
3946         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3947     esac
3948 }
3949
3950 EXESUF=$(exesuf $target_os)
3951 HOSTEXESUF=$(exesuf $host_os)
3952
3953 # set temporary file name
3954 : ${TMPDIR:=$TEMPDIR}
3955 : ${TMPDIR:=$TMP}
3956 : ${TMPDIR:=/tmp}
3957
3958 if [ -n "$tempprefix" ] ; then
3959     mktemp(){
3960         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3961         echo "$tmpname"
3962         mkdir "$tmpname"
3963     }
3964 elif ! check_cmd mktemp -u XXXXXX; then
3965     # simple replacement for missing mktemp
3966     # NOT SAFE FOR GENERAL USE
3967     mktemp(){
3968         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3969         echo "$tmpname"
3970         mkdir "$tmpname"
3971     }
3972 fi
3973
3974 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3975     die "Unable to create temporary directory in $TMPDIR."
3976
3977 tmpfile(){
3978     tmp="${FFTMPDIR}/test"$2
3979     (set -C; exec > $tmp) 2> /dev/null ||
3980         die "Unable to create temporary file in $FFTMPDIR."
3981     eval $1=$tmp
3982 }
3983
3984 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3985 trap 'exit 2' INT
3986
3987 tmpfile TMPASM .asm
3988 tmpfile TMPC   .c
3989 tmpfile TMPCPP .cpp
3990 tmpfile TMPE   $EXESUF
3991 tmpfile TMPH   .h
3992 tmpfile TMPM   .m
3993 tmpfile TMPO   .o
3994 tmpfile TMPS   .S
3995 tmpfile TMPSH  .sh
3996 tmpfile TMPV   .ver
3997
3998 unset -f mktemp
3999
4000 chmod +x $TMPE
4001
4002 # make sure we can execute files in $TMPDIR
4003 cat > $TMPSH 2>> $logfile <<EOF
4004 #! /bin/sh
4005 EOF
4006 chmod +x $TMPSH >> $logfile 2>&1
4007 if ! $TMPSH >> $logfile 2>&1; then
4008     cat <<EOF
4009 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4010 variable to another directory and make sure that it is not mounted noexec.
4011 EOF
4012     die "Sanity test failed."
4013 fi
4014
4015 armasm_flags(){
4016     for flag; do
4017         case $flag in
4018             # Filter out MSVC cl.exe options from cflags that shouldn't
4019             # be passed to gas-preprocessor
4020             -M[TD]*)                                            ;;
4021             *)                  echo $flag                      ;;
4022         esac
4023    done
4024 }
4025
4026 cparser_flags(){
4027     for flag; do
4028         case $flag in
4029             -Wno-switch)             echo -Wno-switch-enum ;;
4030             -Wno-format-zero-length) ;;
4031             -Wdisabled-optimization) ;;
4032             -Wno-pointer-sign)       echo -Wno-other ;;
4033             *)                       echo $flag ;;
4034         esac
4035     done
4036 }
4037
4038 msvc_common_flags(){
4039     for flag; do
4040         case $flag in
4041             # In addition to specifying certain flags under the compiler
4042             # specific filters, they must be specified here as well or else the
4043             # generic catch all at the bottom will print the original flag.
4044             -Wall)                ;;
4045             -Wextra)              ;;
4046             -std=c99)             ;;
4047             # Common flags
4048             -fomit-frame-pointer) ;;
4049             -g)                   echo -Z7 ;;
4050             -fno-math-errno)      ;;
4051             -fno-common)          ;;
4052             -fno-signed-zeros)    ;;
4053             -fPIC)                ;;
4054             -mthumb)              ;;
4055             -march=*)             ;;
4056             -lz)                  echo zlib.lib ;;
4057             -lx264)               echo libx264.lib ;;
4058             -lstdc++)             ;;
4059             -l*)                  echo ${flag#-l}.lib ;;
4060             -LARGEADDRESSAWARE)   echo $flag ;;
4061             -L*)                  echo -libpath:${flag#-L} ;;
4062             *)                    echo $flag ;;
4063         esac
4064     done
4065 }
4066
4067 msvc_flags(){
4068     msvc_common_flags "$@"
4069     for flag; do
4070         case $flag in
4071             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4072                                        -wd4554 ;;
4073             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4074                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4075                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4076                                        -wd4307 \
4077                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4078         esac
4079     done
4080 }
4081
4082 icl_flags(){
4083     msvc_common_flags "$@"
4084     for flag; do
4085         case $flag in
4086             # Despite what Intel's documentation says -Wall, which is supported
4087             # on Windows, does enable remarks so disable them here.
4088             -Wall)                echo $flag -Qdiag-disable:remark ;;
4089             -std=c99)             echo -Qstd=c99 ;;
4090             -flto)                echo -ipo ;;
4091         esac
4092     done
4093 }
4094
4095 icc_flags(){
4096     for flag; do
4097         case $flag in
4098             -flto)                echo -ipo ;;
4099             *)                    echo $flag ;;
4100         esac
4101     done
4102 }
4103
4104 suncc_flags(){
4105     for flag; do
4106         case $flag in
4107             -march=*|-mcpu=*)
4108                 case "${flag#*=}" in
4109                     native)                   echo -xtarget=native       ;;
4110                     v9|niagara)               echo -xarch=sparc          ;;
4111                     ultrasparc)               echo -xarch=sparcvis       ;;
4112                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4113                     i586|pentium)             echo -xchip=pentium        ;;
4114                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4115                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4116                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4117                     pentium4*)          echo -xtarget=pentium4           ;;
4118                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4119                     *-sse3)             echo -xarch=sse3                 ;;
4120                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4121                     bonnell)                   echo -xarch=ssse3         ;;
4122                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4123                     westmere)                  echo -xtarget=westmere    ;;
4124                     silvermont)                echo -xarch=sse4_2        ;;
4125                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4126                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4127                                                echo -xarch=avx           ;;
4128                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4129                     btver1)                    echo -xarch=amdsse4a      ;;
4130                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4131                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4132                     k8|opteron|athlon64|athlon-fx)
4133                                                echo -xarch=sse2a         ;;
4134                     athlon*)                   echo -xarch=pentium_proa  ;;
4135                 esac
4136                 ;;
4137             -std=c99)             echo -xc99              ;;
4138             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4139             -fPIC)                echo -KPIC -xcode=pic32 ;;
4140             -W*,*)                echo $flag              ;;
4141             -f*-*|-W*|-mimpure-text)                      ;;
4142             -shared)              echo -G                 ;;
4143             *)                    echo $flag              ;;
4144         esac
4145     done
4146 }
4147
4148 probe_cc(){
4149     pfx=$1
4150     _cc=$2
4151     first=$3
4152
4153     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4154     unset _ld_o _ldflags _ld_lib _ld_path
4155     unset _depflags _DEPCMD _DEPFLAGS
4156     _flags_filter=echo
4157
4158     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4159         true # no-op to avoid reading stdin in following checks
4160     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4161         _type=llvm_gcc
4162         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4163         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4164         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4165         _cflags_speed='-O3'
4166         _cflags_size='-Os'
4167     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4168         _type=gcc
4169         gcc_version=$($_cc --version | head -n1)
4170         gcc_basever=$($_cc -dumpversion)
4171         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4172         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4173         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4174         case $gcc_basever in
4175             2) ;;
4176             2.*) ;;
4177             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4178         esac
4179         if [ "$first" = true ]; then
4180             case $gcc_basever in
4181                 4.2*)
4182                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4183             esac
4184         fi
4185         _cflags_speed='-O3'
4186         _cflags_size='-Os'
4187     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4188         _type=icc
4189         _ident=$($_cc --version | head -n1)
4190         _depflags='-MMD'
4191         _cflags_speed='-O3'
4192         _cflags_size='-Os'
4193         _cflags_noopt='-O1'
4194         _flags_filter=icc_flags
4195     elif $_cc -v 2>&1 | grep -q xlc; then
4196         _type=xlc
4197         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4198         _cflags_speed='-O5'
4199         _cflags_size='-O5 -qcompact'
4200     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4201         test -d "$sysroot" || die "No valid sysroot specified."
4202         _type=armcc
4203         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4204         armcc_conf="$PWD/armcc.conf"
4205         $_cc --arm_linux_configure                 \
4206              --arm_linux_config_file="$armcc_conf" \
4207              --configure_sysroot="$sysroot"        \
4208              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4209              die "Error creating armcc configuration file."
4210         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4211         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4212         as_default="${cross_prefix}gcc"
4213         _depflags='-MMD'
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216     elif $_cc -v 2>&1 | grep -q clang; then
4217         _type=clang
4218         _ident=$($_cc --version 2>/dev/null | head -n1)
4219         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4220         _cflags_speed='-O3'
4221         _cflags_size='-Oz'
4222     elif $_cc -V 2>&1 | grep -q Sun; then
4223         _type=suncc
4224         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4225         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4226         _DEPFLAGS='-xM1 -xc99'
4227         _ldflags='-std=c99'
4228         _cflags_speed='-O5'
4229         _cflags_size='-O5 -xspace'
4230         _flags_filter=suncc_flags
4231     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4232         _type=pathscale
4233         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4234         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4235         _cflags_speed='-O2'
4236         _cflags_size='-Os'
4237         _flags_filter='filter_out -Wdisabled-optimization'
4238     elif $_cc -v 2>&1 | grep -q Open64; then
4239         _type=open64
4240         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4241         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4242         _cflags_speed='-O2'
4243         _cflags_size='-Os'
4244         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4245     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4246         _type=armasm
4247         _ident=$($_cc | head -n1)
4248         # 4509: "This form of conditional instruction is deprecated"
4249         _flags="-nologo -ignore 4509"
4250         _flags_filter=armasm_flags
4251     elif $_cc 2>&1 | grep -q Intel; then
4252         _type=icl
4253         _ident=$($_cc 2>&1 | head -n1)
4254         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4255         # Not only is O3 broken on 13.x+ but it is slower on all previous
4256         # versions (tested) as well.
4257         _cflags_speed="-O2"
4258         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4259         if $_cc 2>&1 | grep -q Linker; then
4260             _ld_o='-out:$@'
4261         else
4262             _ld_o='-Fe$@'
4263         fi
4264         _cc_o='-Fo$@'
4265         _cc_e='-P'
4266         _flags_filter=icl_flags
4267         _ld_lib='lib%.a'
4268         _ld_path='-libpath:'
4269         # -Qdiag-error to make icl error when seeing certain unknown arguments
4270         _flags='-nologo -Qdiag-error:4044,10157'
4271         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4272         # with MSVC which enables it by default.
4273         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4274         disable stripping
4275     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4276         # lld can emulate multiple different linkers; in ms link.exe mode,
4277         # the -? parameter gives the help output which contains an identifyable
4278         # string, while it gives an error in other modes.
4279         _type=lld-link
4280         # The link.exe mode doesn't have a switch for getting the version,
4281         # but we can force it back to gnu mode and get the version from there.
4282         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4283         _ld_o='-out:$@'
4284         _flags_filter=msvc_flags
4285         _ld_lib='lib%.a'
4286         _ld_path='-libpath:'
4287     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4288         _type=msvc
4289         _ident=$($_cc 2>&1 | head -n1)
4290         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4291         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4292         _cflags_speed="-O2"
4293         _cflags_size="-O1"
4294         _cflags_noopt="-O1"
4295         if $_cc -nologo- 2>&1 | grep -q Linker; then
4296             _ld_o='-out:$@'
4297         else
4298             _ld_o='-Fe$@'
4299         fi
4300         _cc_o='-Fo$@'
4301         _cc_e='-P -Fi$@'
4302         _flags_filter=msvc_flags
4303         _ld_lib='lib%.a'
4304         _ld_path='-libpath:'
4305         _flags='-nologo'
4306         disable stripping
4307     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4308         _type=cparser
4309         _ident=$($_cc --version | head -n1)
4310         _depflags='-MMD'
4311         _cflags_speed='-O4'
4312         _cflags_size='-O2'
4313         _flags_filter=cparser_flags
4314     fi
4315
4316     eval ${pfx}_type=\$_type
4317     eval ${pfx}_ident=\$_ident
4318 }
4319
4320 set_ccvars(){
4321     eval ${1}_C=\${_cc_c-\${${1}_C}}
4322     eval ${1}_E=\${_cc_e-\${${1}_E}}
4323     eval ${1}_O=\${_cc_o-\${${1}_O}}
4324
4325     if [ -n "$_depflags" ]; then
4326         eval ${1}_DEPFLAGS=\$_depflags
4327     else
4328         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4329         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4330         eval DEP${1}FLAGS=\$_flags
4331     fi
4332 }
4333
4334 probe_cc cc "$cc" "true"
4335 cflags_filter=$_flags_filter
4336 cflags_speed=$_cflags_speed
4337 cflags_size=$_cflags_size
4338 cflags_noopt=$_cflags_noopt
4339 add_cflags $_flags $_cflags
4340 cc_ldflags=$_ldflags
4341 set_ccvars CC
4342 set_ccvars CXX
4343
4344 probe_cc hostcc "$host_cc"
4345 host_cflags_filter=$_flags_filter
4346 host_cflags_speed=$_cflags_speed
4347 add_host_cflags  $_flags $_cflags
4348 set_ccvars HOSTCC
4349
4350 test -n "$cc_type" && enable $cc_type ||
4351     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4352
4353 : ${as_default:=$cc}
4354 : ${objcc_default:=$cc}
4355 : ${dep_cc_default:=$cc}
4356 : ${ld_default:=$cc}
4357 : ${host_ld_default:=$host_cc}
4358 set_default ar as objcc dep_cc ld ln_s host_ld windres
4359
4360 probe_cc as "$as"
4361 asflags_filter=$_flags_filter
4362 add_asflags $_flags $_cflags
4363 set_ccvars AS
4364
4365 probe_cc objcc "$objcc"
4366 objcflags_filter=$_flags_filter
4367 add_objcflags $_flags $_cflags
4368 set_ccvars OBJC
4369
4370 probe_cc ld "$ld"
4371 ldflags_filter=$_flags_filter
4372 add_ldflags $_flags $_ldflags
4373 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4374 LD_O=${_ld_o-$LD_O}
4375 LD_LIB=${_ld_lib-$LD_LIB}
4376 LD_PATH=${_ld_path-$LD_PATH}
4377
4378 probe_cc hostld "$host_ld"
4379 host_ldflags_filter=$_flags_filter
4380 add_host_ldflags $_flags $_ldflags
4381 HOSTLD_O=${_ld_o-$HOSTLD_O}
4382
4383 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4384     probe_cc depcc "$dep_cc"
4385     CCDEP=${_DEPCMD:-$DEPCMD}
4386     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4387     DEPCCFLAGS=$_flags
4388 fi
4389
4390 if $ar 2>&1 | grep -q Microsoft; then
4391     arflags="-nologo"
4392     ar_o='-out:$@'
4393 elif $ar 2>&1 | grep -q "\[D\] "; then
4394     arflags="rcD"
4395     ar_o='$@'
4396 else
4397     arflags="rc"
4398     ar_o='$@'
4399 fi
4400
4401 add_cflags $extra_cflags
4402 add_cxxflags $extra_cxxflags
4403 add_objcflags $extra_objcflags
4404 add_asflags $extra_cflags
4405
4406 if test -n "$sysroot"; then
4407     case "$cc_type" in
4408         gcc|llvm_gcc|clang)
4409             add_cppflags --sysroot="$sysroot"
4410             add_ldflags --sysroot="$sysroot"
4411         ;;
4412     esac
4413 fi
4414
4415 if test "$cpu" = host; then
4416     enabled cross_compile &&
4417         die "--cpu=host makes no sense when cross-compiling."
4418
4419     case "$cc_type" in
4420         gcc|llvm_gcc)
4421             check_native(){
4422                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4423                 sed -n "/cc1.*$1=/{
4424                             s/.*$1=\\([^ ]*\\).*/\\1/
4425                             p
4426                             q
4427                         }" $TMPE
4428             }
4429             cpu=$(check_native -march || check_native -mcpu)
4430         ;;
4431         clang)
4432             check_native(){
4433                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4434                 sed -n "/cc1.*-target-cpu /{
4435                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4436                             p
4437                             q
4438                         }" $TMPE
4439             }
4440             cpu=$(check_native -march)
4441         ;;
4442     esac
4443
4444     test "${cpu:-host}" = host &&
4445         die "--cpu=host not supported with compiler $cc"
4446 fi
4447
4448 # Deal with common $arch aliases
4449 case "$arch" in
4450     aarch64|arm64)
4451         arch="aarch64"
4452     ;;
4453     arm*|iPad*|iPhone*)
4454         arch="arm"
4455     ;;
4456     mips*|IP*)
4457         case "$arch" in
4458         *el)
4459             add_cppflags -EL
4460             add_ldflags -EL
4461         ;;
4462         *eb)
4463             add_cppflags -EB
4464             add_ldflags -EB
4465         ;;
4466         esac
4467         arch="mips"
4468     ;;
4469     parisc*|hppa*)
4470         arch="parisc"
4471     ;;
4472     "Power Macintosh"|ppc*|powerpc*)
4473         arch="ppc"
4474     ;;
4475     s390|s390x)
4476         arch="s390"
4477     ;;
4478     sh4|sh)
4479         arch="sh4"
4480     ;;
4481     sun4*|sparc*)
4482         arch="sparc"
4483     ;;
4484     tilegx|tile-gx)
4485         arch="tilegx"
4486     ;;
4487     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4488         arch="x86"
4489     ;;
4490 esac
4491
4492 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4493 enable $arch
4494
4495 # Add processor-specific flags
4496 if enabled aarch64; then
4497
4498     case $cpu in
4499         armv*)
4500             cpuflags="-march=$cpu"
4501         ;;
4502         *)
4503             cpuflags="-mcpu=$cpu"
4504         ;;
4505     esac
4506
4507 elif enabled alpha; then
4508
4509     cpuflags="-mcpu=$cpu"
4510
4511 elif enabled arm; then
4512
4513     check_arm_arch() {
4514         check_cpp_condition stddef.h \
4515             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4516             $cpuflags
4517     }
4518
4519     probe_arm_arch() {
4520         if   check_arm_arch 4;        then echo armv4
4521         elif check_arm_arch 4T;       then echo armv4t
4522         elif check_arm_arch 5;        then echo armv5
4523         elif check_arm_arch 5E;       then echo armv5e
4524         elif check_arm_arch 5T;       then echo armv5t
4525         elif check_arm_arch 5TE;      then echo armv5te
4526         elif check_arm_arch 5TEJ;     then echo armv5te
4527         elif check_arm_arch 6;        then echo armv6
4528         elif check_arm_arch 6J;       then echo armv6j
4529         elif check_arm_arch 6K;       then echo armv6k
4530         elif check_arm_arch 6Z;       then echo armv6z
4531         elif check_arm_arch 6KZ;      then echo armv6zk
4532         elif check_arm_arch 6ZK;      then echo armv6zk
4533         elif check_arm_arch 6T2;      then echo armv6t2
4534         elif check_arm_arch 7;        then echo armv7
4535         elif check_arm_arch 7A  7_A;  then echo armv7-a
4536         elif check_arm_arch 7S;       then echo armv7-a
4537         elif check_arm_arch 7R  7_R;  then echo armv7-r
4538         elif check_arm_arch 7M  7_M;  then echo armv7-m
4539         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4540         elif check_arm_arch 8A  8_A;  then echo armv8-a
4541         fi
4542     }
4543
4544     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4545
4546     case $cpu in
4547         armv*)
4548             cpuflags="-march=$cpu"
4549             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4550         ;;
4551         *)
4552             cpuflags="-mcpu=$cpu"
4553             case $cpu in
4554                 cortex-a*)                               subarch=armv7a  ;;
4555                 cortex-r*)                               subarch=armv7r  ;;
4556                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4557                 arm11*)                                  subarch=armv6   ;;
4558                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4559                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4560                 *)                             subarch=$(probe_arm_arch) ;;
4561             esac
4562         ;;
4563     esac
4564
4565     case "$subarch" in
4566         armv5t*)    enable fast_clz                ;;
4567         armv[6-8]*)
4568             enable fast_clz
4569             disabled fast_unaligned || enable fast_unaligned
4570             ;;
4571     esac
4572
4573 elif enabled avr32; then
4574
4575     case $cpu in
4576         ap7[02]0[0-2])
4577             subarch="avr32_ap"
4578             cpuflags="-mpart=$cpu"
4579         ;;
4580         ap)
4581             subarch="avr32_ap"
4582             cpuflags="-march=$cpu"
4583         ;;
4584         uc3[ab]*)
4585             subarch="avr32_uc"
4586             cpuflags="-mcpu=$cpu"
4587         ;;
4588         uc)
4589             subarch="avr32_uc"
4590             cpuflags="-march=$cpu"
4591         ;;
4592     esac
4593
4594 elif enabled bfin; then
4595
4596     cpuflags="-mcpu=$cpu"
4597
4598 elif enabled mips; then
4599
4600     cpuflags="-march=$cpu"
4601
4602     if [ "$cpu" != "generic" ]; then
4603         disable mips32r2
4604         disable mips32r5
4605         disable mips64r2
4606         disable mips32r6
4607         disable mips64r6
4608         disable loongson2
4609         disable loongson3
4610
4611         case $cpu in
4612             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4613                 enable mips32r2
4614                 disable msa
4615             ;;
4616             p5600|i6400|p6600)
4617                 disable mipsdsp
4618                 disable mipsdspr2
4619             ;;
4620             loongson*)
4621                 enable loongson2
4622                 enable loongson3
4623                 enable local_aligned
4624                 enable simd_align_16
4625                 enable fast_64bit
4626                 enable fast_clz
4627                 enable fast_cmov
4628                 enable fast_unaligned
4629                 disable aligned_stack
4630                 disable mipsfpu
4631                 disable mipsdsp
4632                 disable mipsdspr2
4633                 case $cpu in
4634                     loongson3*)
4635                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4636                     ;;
4637                     loongson2e)
4638                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4639                     ;;
4640                     loongson2f)
4641                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4642                     ;;
4643                 esac
4644             ;;
4645             *)
4646                 # Unknown CPU. Disable everything.
4647                 warn "unknown CPU. Disabling all MIPS optimizations."
4648                 disable mipsfpu
4649                 disable mipsdsp
4650                 disable mipsdspr2
4651                 disable msa
4652                 disable mmi
4653             ;;
4654         esac
4655
4656         case $cpu in
4657             24kc)
4658                 disable mipsfpu
4659                 disable mipsdsp
4660                 disable mipsdspr2
4661             ;;
4662             24kf*)
4663                 disable mipsdsp
4664                 disable mipsdspr2
4665             ;;
4666             24kec|34kc|1004kc)
4667                 disable mipsfpu
4668                 disable mipsdspr2
4669             ;;
4670             24kef*|34kf*|1004kf*)
4671                 disable mipsdspr2
4672             ;;
4673             74kc)
4674                 disable mipsfpu
4675             ;;
4676             p5600)
4677                 enable mips32r5
4678                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4679             ;;
4680             i6400)
4681                 enable mips64r6
4682                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4683             ;;
4684             p6600)
4685                 enable mips64r6
4686                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4687             ;;
4688         esac
4689     else
4690         # We do not disable anything. Is up to the user to disable the unwanted features.
4691         warn 'generic cpu selected'
4692     fi
4693
4694 elif enabled ppc; then
4695
4696     disable ldbrx
4697
4698     case $(tolower $cpu) in
4699         601|ppc601|powerpc601)
4700             cpuflags="-mcpu=601"
4701             disable altivec
4702         ;;
4703         603*|ppc603*|powerpc603*)
4704             cpuflags="-mcpu=603"
4705             disable altivec
4706         ;;
4707         604*|ppc604*|powerpc604*)
4708             cpuflags="-mcpu=604"
4709             disable altivec
4710         ;;
4711         g3|75*|ppc75*|powerpc75*)
4712             cpuflags="-mcpu=750"
4713             disable altivec
4714         ;;
4715         g4|745*|ppc745*|powerpc745*)
4716             cpuflags="-mcpu=7450"
4717             disable vsx
4718         ;;
4719         74*|ppc74*|powerpc74*)
4720             cpuflags="-mcpu=7400"
4721             disable vsx
4722         ;;
4723         g5|970|ppc970|powerpc970)
4724             cpuflags="-mcpu=970"
4725             disable vsx
4726         ;;
4727         power[3-6]*)
4728             cpuflags="-mcpu=$cpu"
4729             disable vsx
4730         ;;
4731         power[7-8]*)
4732             cpuflags="-mcpu=$cpu"
4733         ;;
4734         cell)
4735             cpuflags="-mcpu=cell"
4736             enable ldbrx
4737             disable vsx
4738         ;;
4739         e500mc)
4740             cpuflags="-mcpu=e500mc"
4741             disable altivec
4742         ;;
4743         e500v2)
4744             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4745             disable altivec
4746             disable dcbzl
4747         ;;
4748         e500)
4749             cpuflags="-mcpu=8540 -mhard-float"
4750             disable altivec
4751             disable dcbzl
4752         ;;
4753     esac
4754
4755 elif enabled sparc; then
4756
4757     case $cpu in
4758         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4759             cpuflags="-mcpu=$cpu"
4760         ;;
4761         ultrasparc*|niagara[234])
4762             cpuflags="-mcpu=$cpu"
4763         ;;
4764     esac
4765
4766 elif enabled x86; then
4767
4768     case $cpu in
4769         i[345]86|pentium)
4770             cpuflags="-march=$cpu"
4771             disable i686
4772             disable mmx
4773         ;;
4774         # targets that do NOT support nopl and conditional mov (cmov)
4775         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4776             cpuflags="-march=$cpu"
4777             disable i686
4778         ;;
4779         # targets that do support nopl and conditional mov (cmov)
4780         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4781         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4782         |amdfam10|barcelona|b[dt]ver*|znver*)
4783             cpuflags="-march=$cpu"
4784             enable i686
4785             enable fast_cmov
4786         ;;
4787         # targets that do support conditional mov but on which it's slow
4788         pentium4|pentium4m|prescott|nocona)
4789             cpuflags="-march=$cpu"
4790             enable i686
4791             disable fast_cmov
4792         ;;
4793     esac
4794
4795 fi
4796
4797 if [ "$cpu" != generic ]; then
4798     add_cflags  $cpuflags
4799     add_asflags $cpuflags
4800     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4801 fi
4802
4803 # compiler sanity check
4804 check_exec <<EOF
4805 int main(void){ return 0; }
4806 EOF
4807 if test "$?" != 0; then
4808     echo "$cc is unable to create an executable file."
4809     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4810         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4811         echo "Only do this if you know what cross compiling means."
4812     fi
4813     die "C compiler test failed."
4814 fi
4815
4816 add_cppflags -D_ISOC99_SOURCE
4817 add_cxxflags -D__STDC_CONSTANT_MACROS
4818 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4819
4820 # some compilers silently accept -std=c11, so we also need to check that the
4821 # version macro is defined properly
4822 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4823     add_cflags -std=c11 ||
4824     check_cflags -std=c99
4825
4826 check_cppflags -D_FILE_OFFSET_BITS=64
4827 check_cppflags -D_LARGEFILE_SOURCE
4828
4829 add_host_cppflags -D_ISOC99_SOURCE
4830 check_host_cflags -std=c99
4831 check_host_cflags -Wall
4832 check_host_cflags $host_cflags_speed
4833
4834 check_64bit(){
4835     arch32=$1
4836     arch64=$2
4837     expr=$3
4838     check_code cc "" "int test[2*($expr) - 1]" &&
4839         subarch=$arch64 || subarch=$arch32
4840     enable $subarch
4841 }
4842
4843 case "$arch" in
4844     aarch64|alpha|ia64)
4845         enabled shared && enable_weak pic
4846     ;;
4847     mips)
4848         check_64bit mips mips64 '_MIPS_SIM > 1'
4849         enabled shared && enable_weak pic
4850     ;;
4851     parisc)
4852         check_64bit parisc parisc64 'sizeof(void *) > 4'
4853         enabled shared && enable_weak pic
4854     ;;
4855     ppc)
4856         check_64bit ppc ppc64 'sizeof(void *) > 4'
4857         enabled shared && enable_weak pic
4858     ;;
4859     s390)
4860         check_64bit s390 s390x 'sizeof(void *) > 4'
4861         enabled shared && enable_weak pic
4862     ;;
4863     sparc)
4864         check_64bit sparc sparc64 'sizeof(void *) > 4'
4865         enabled shared && enable_weak pic
4866     ;;
4867     x86)
4868         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4869         # Treat x32 as x64 for now. Note it also needs pic if shared
4870         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4871             subarch=x86_64 && enable x86_64 && disable x86_32
4872         if enabled x86_64; then
4873             enabled shared && enable_weak pic
4874             objformat=elf64
4875         fi
4876     ;;
4877 esac
4878
4879 # OS specific
4880 case $target_os in
4881     aix)
4882         SHFLAGS=-shared
4883         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4884         enabled shared && add_ldflags -Wl,-brtl
4885         arflags='-Xany -r -c'
4886         ;;
4887     android)
4888         disable symver
4889         enable section_data_rel_ro
4890         SLIB_INSTALL_NAME='$(SLIBNAME)'
4891         SLIB_INSTALL_LINKS=
4892         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4893         ;;
4894     haiku)
4895         prefix_default="/boot/common"
4896         network_extralibs="-lnetwork"
4897         host_extralibs=
4898         ;;
4899     sunos)
4900         SHFLAGS='-shared -Wl,-h,$$(@F)'
4901         enabled x86 && append SHFLAGS -mimpure-text
4902         network_extralibs="-lsocket -lnsl"
4903         add_cppflags -D__EXTENSIONS__
4904         # When using suncc to build, the Solaris linker will mark
4905         # an executable with each instruction set encountered by
4906         # the Solaris assembler.  As our libraries contain their own
4907         # guards for processor-specific code, instead suppress
4908         # generation of the HWCAPS ELF section on Solaris x86 only.
4909         enabled_all suncc x86 &&
4910             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4911             add_ldflags -Wl,-M,mapfile
4912         nm_default='nm -P -g'
4913         version_script='-M'
4914         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4915         ;;
4916     netbsd)
4917         disable symver
4918         oss_indev_extralibs="-lossaudio"
4919         oss_outdev_extralibs="-lossaudio"
4920         enabled gcc || check_ldflags -Wl,-zmuldefs
4921         ;;
4922     openbsd|bitrig)
4923         disable symver
4924         SHFLAGS='-shared'
4925         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4926         SLIB_INSTALL_LINKS=
4927         oss_indev_extralibs="-lossaudio"
4928         oss_outdev_extralibs="-lossaudio"
4929         ;;
4930     dragonfly)
4931         disable symver
4932         ;;
4933     freebsd)
4934         ;;
4935     bsd/os)
4936         add_extralibs -lpoll -lgnugetopt
4937         strip="strip -d"
4938         ;;
4939     darwin)
4940         enabled ppc && add_asflags -force_cpusubtype_ALL
4941         install_name_dir_default='$(SHLIBDIR)'
4942         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4943         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4944         strip="${strip} -x"
4945         add_ldflags -Wl,-dynamic,-search_paths_first
4946         check_cflags -Werror=partial-availability
4947         SLIBSUF=".dylib"
4948         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4949         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4950         enabled x86_64 && objformat="macho64" || objformat="macho32"
4951         enabled_any pic shared x86_64 ||
4952             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4953         check_header dispatch/dispatch.h &&
4954             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4955         if test -n "$sysroot"; then
4956             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4957             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4958         fi
4959         version_script='-exported_symbols_list'
4960         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4961         ;;
4962     msys*)
4963         die "Native MSYS builds are discouraged, please use the MINGW environment."
4964         ;;
4965     mingw32*|mingw64*)
4966         target_os=mingw32
4967         if enabled shared; then
4968             # Cannot build both shared and static libs when using dllimport.
4969             disable static
4970         fi
4971         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4972         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4973         shlibdir_default="$bindir_default"
4974         SLIBPREF=""
4975         SLIBSUF=".dll"
4976         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4977         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4978         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4979         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4980         SLIB_INSTALL_LINKS=
4981         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4982         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4983         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4984         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4985         enabled x86_64 && objformat="win64" || objformat="win32"
4986         ranlib=:
4987         enable dos_paths
4988         check_ldflags -Wl,--nxcompat,--dynamicbase
4989         # Lets work around some stupidity in binutils.
4990         # ld will strip relocations from executables even though we need them
4991         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4992         # however ld then forgets what the entry point should be (oops) so we
4993         # have to manually (re)set it.
4994         if enabled x86_32; then
4995             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4996         elif enabled x86_64; then
4997             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4998             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4999             # Set image base >4GB for extra entropy with HEASLR
5000             add_ldexeflags -Wl,--image-base,0x140000000
5001             append SHFLAGS -Wl,--image-base,0x180000000
5002         fi
5003         ;;
5004     win32|win64)
5005         disable symver
5006         if enabled shared; then
5007             # Link to the import library instead of the normal static library
5008             # for shared libs.
5009             LD_LIB='%.lib'
5010             # Cannot build both shared and static libs with MSVC or icl.
5011             disable static
5012         fi
5013         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5014         shlibdir_default="$bindir_default"
5015         SLIBPREF=""
5016         SLIBSUF=".dll"
5017         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5018         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5019         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5020         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5021         SLIB_INSTALL_LINKS=
5022         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5023         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5024         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5025         enabled x86_64 && objformat="win64" || objformat="win32"
5026         ranlib=:
5027         enable dos_paths
5028         ;;
5029     cygwin*)
5030         target_os=cygwin
5031         shlibdir_default="$bindir_default"
5032         SLIBPREF="cyg"
5033         SLIBSUF=".dll"
5034         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5035         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5036         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5037         SLIB_INSTALL_LINKS=
5038         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5039         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5040         enabled x86_64 && objformat="win64" || objformat="win32"
5041         enable dos_paths
5042         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5043         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5044         ;;
5045     *-dos|freedos|opendos)
5046         network_extralibs="-lsocket"
5047         objformat="coff"
5048         enable dos_paths
5049         add_cppflags -U__STRICT_ANSI__
5050         ;;
5051     linux)
5052         enable section_data_rel_ro
5053         enabled_any arm aarch64 && enable_weak linux_perf
5054         ;;
5055     irix*)
5056         target_os=irix
5057         ranlib="echo ignoring ranlib"
5058         ;;
5059     os/2*)
5060         strip="lxlite -CS"
5061         striptype=""
5062         objformat="aout"
5063         add_cppflags -D_GNU_SOURCE
5064         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5065         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5066         LIBSUF="_s.a"
5067         SLIBPREF=""
5068         SLIBSUF=".dll"
5069         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5070         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5071         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5072             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5073             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5074             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5075             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5076         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5077             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5078         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5079         SLIB_INSTALL_LINKS=
5080         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5081         enable dos_paths
5082         enable_weak os2threads
5083         ;;
5084     gnu/kfreebsd)
5085         add_cppflags -D_BSD_SOURCE
5086         ;;
5087     gnu)
5088         ;;
5089     qnx)
5090         add_cppflags -D_QNX_SOURCE
5091         network_extralibs="-lsocket"
5092         ;;
5093     symbian)
5094         SLIBSUF=".dll"
5095         enable dos_paths
5096         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5097         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5098         add_ldflags -Wl,--target1-abs,--no-undefined \
5099                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5100                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5101         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5102                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5103                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5104         ;;
5105     minix)
5106         ;;
5107     none)
5108         ;;
5109     *)
5110         die "Unknown OS '$target_os'."
5111         ;;
5112 esac
5113
5114 # test if creating links works
5115 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5116 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5117 mkdir "$link_dest"
5118 $ln_s "$link_dest" "$link_name"
5119 touch "$link_dest/test_file"
5120 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5121     # create link to source path
5122     [ -e src ] && rm src
5123     $ln_s "$source_path" src
5124     source_link=src
5125 else
5126     # creating directory links doesn't work
5127     # fall back to using the full source path
5128     source_link="$source_path"
5129 fi
5130 # cleanup
5131 rm -r "$link_dest"
5132 rm -r "$link_name"
5133
5134 # determine libc flavour
5135
5136 probe_libc(){
5137     pfx=$1
5138     pfx_no_=${pfx%_}
5139     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5140     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5141         eval ${pfx}libc_type=uclibc
5142         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5143     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5144         eval ${pfx}libc_type=glibc
5145         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5146     # MinGW headers can be installed on Cygwin, so check for newlib first.
5147     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5148         eval ${pfx}libc_type=newlib
5149         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5150     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5151     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5152         eval ${pfx}libc_type=mingw64
5153         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5154             add_compat msvcrt/snprintf.o
5155             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5156         fi
5157         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5158         eval test \$${pfx_no_}cc_type = "gcc" &&
5159             add_${pfx}cppflags -D__printf__=__gnu_printf__
5160         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5161             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5162     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5163          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5164         eval ${pfx}libc_type=mingw32
5165         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5166             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5167             die "ERROR: MinGW32 runtime version must be >= 3.15."
5168         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5169         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5170             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5171         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5172             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5173         eval test \$${pfx_no_}cc_type = "gcc" &&
5174             add_${pfx}cppflags -D__printf__=__gnu_printf__
5175     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5176         eval ${pfx}libc_type=msvcrt
5177         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5178             if [ "$pfx" = host_ ]; then
5179                 add_host_cppflags -Dsnprintf=_snprintf
5180             else
5181                 add_compat strtod.o strtod=avpriv_strtod
5182                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5183                                              _snprintf=avpriv_snprintf  \
5184                                              vsnprintf=avpriv_vsnprintf
5185             fi
5186         fi
5187         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5188         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5189         # 0x601 by default unless something else is set by the user.
5190         # This can easily lead to us detecting functions only present
5191         # in such new versions and producing binaries requiring windows 7.0.
5192         # Therefore explicitly set the default to Vista unless the user has
5193         # set something else on the command line.
5194         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5195         # family. For these cases, configure is free to use any functions
5196         # found in the SDK headers by default. (Alternatively, we could force
5197         # _WIN32_WINNT to 0x0602 in that case.)
5198         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5199             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5200 #ifdef WINAPI_FAMILY
5201 #include <winapifamily.h>
5202 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5203 #error not desktop
5204 #endif
5205 #endif
5206 EOF
5207         if [ "$pfx" = "" ]; then
5208             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5209             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5210         fi
5211     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5212         eval ${pfx}libc_type=klibc
5213     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5214         eval ${pfx}libc_type=bionic
5215     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5216         eval ${pfx}libc_type=solaris
5217         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5218     fi
5219     check_${pfx}cc <<EOF
5220 #include <time.h>
5221 void *v = localtime_r;
5222 EOF
5223 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5224 #include <time.h>
5225 void *v = localtime_r;
5226 EOF
5227
5228     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5229 }
5230
5231 probe_libc
5232 probe_libc host_
5233
5234 # hacks for compiler/libc/os combinations
5235
5236 case $libc_type in
5237     bionic)
5238         add_compat strtod.o strtod=avpriv_strtod
5239         ;;
5240 esac
5241
5242 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5243     add_cppflags '-I\$(SRC_PATH)/compat/float'
5244
5245 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5246
5247 set_default libdir
5248 : ${shlibdir_default:="$libdir"}
5249 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5250
5251 set_default $PATHS_LIST
5252 set_default nm
5253
5254 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5255
5256 enable_weak_pic() {
5257     disabled pic && return
5258     enable pic
5259     add_cppflags -DPIC
5260     case "$target_os" in
5261     mingw*|cygwin*|win*)
5262         ;;
5263     *)
5264         add_cflags -fPIC
5265         add_asflags -fPIC
5266         ;;
5267     esac
5268 }
5269
5270 enabled pic && enable_weak_pic
5271
5272 check_cc <<EOF || die "Symbol mangling check failed."
5273 int ff_extern;
5274 EOF
5275 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5276 extern_prefix=${sym%%ff_extern*}
5277
5278 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5279
5280 _restrict=
5281 for restrict_keyword in restrict __restrict__ __restrict; do
5282     check_cc <<EOF && _restrict=$restrict_keyword && break
5283 void foo(char * $restrict_keyword p);
5284 EOF
5285 done
5286
5287 check_cc <<EOF && enable pragma_deprecated
5288 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5289 EOF
5290
5291 check_cc <<EOF || die "endian test failed"
5292 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5293 EOF
5294 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5295
5296 check_cc <<EOF && enable const_nan
5297 #include <math.h>
5298 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5299 EOF
5300
5301 if ! enabled ppc64 || enabled bigendian; then
5302     disable vsx
5303 fi
5304
5305 check_gas() {
5306     log "check_gas using '$as' as AS"
5307     # :vararg is used on aarch64, arm and ppc altivec
5308     check_as <<EOF || return 1
5309 .macro m n, y:vararg=0
5310 \n: .int \y
5311 .endm
5312 m x
5313 EOF
5314     # .altmacro is only used in arm asm
5315     ! enabled arm || check_as <<EOF || return 1
5316 .altmacro
5317 EOF
5318     enable gnu_as
5319     return 0
5320 }
5321
5322 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5323     nogas=:
5324     enabled_any arm aarch64 && nogas=die
5325     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5326     as_noop=-v
5327
5328     case $as_type in
5329         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5330         gcc)  gaspp_as_type=gas ;;
5331         *)    gaspp_as_type=$as_type ;;
5332     esac
5333
5334     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5335
5336     test "${as#*gas-preprocessor.pl}" != "$as" ||
5337     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5338         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5339
5340     if ! check_gas ; then
5341         as=${gas:=$as}
5342         check_gas || \
5343             $nogas "GNU assembler not found, install/update gas-preprocessor"
5344     fi
5345
5346     check_as <<EOF && enable as_func
5347 .func test
5348 .endfunc
5349 EOF
5350 fi
5351
5352 check_inline_asm inline_asm_labels '"1:\n"'
5353
5354 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5355
5356 if enabled aarch64; then
5357     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5358     # internal assembler in clang 3.3 does not support this instruction
5359     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5360     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5361
5362     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5363
5364 elif enabled alpha; then
5365
5366     check_cflags -mieee
5367
5368 elif enabled arm; then
5369
5370     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5371
5372     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5373 float func(float a, float b){ return a+b; }
5374 EOF
5375
5376     enabled thumb && check_cflags -mthumb || check_cflags -marm
5377
5378     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5379         enable vfp_args
5380     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5381         enable vfp_args
5382     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5383         case "${cross_prefix:-$cc}" in
5384             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5385             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5386 __asm__ (".eabi_attribute 28, 1");
5387 int main(void) { return 0; }
5388 EOF
5389         esac
5390         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5391     fi
5392
5393     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5394     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5395     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5396     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5397     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5398     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5399     enabled setend  && check_insn setend  'setend be'
5400
5401     [ $target_os = linux ] || [ $target_os = android ] ||
5402         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5403             $ARCH_EXT_LIST_ARM
5404
5405     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5406
5407     check_as <<EOF && enable as_arch_directive
5408 .arch armv7-a
5409 EOF
5410     check_as <<EOF && enable as_fpu_directive
5411 .fpu neon
5412 EOF
5413
5414     # llvm's integrated assembler supports .object_arch from llvm 3.5
5415     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5416         check_as <<EOF && enable as_object_arch
5417 .object_arch armv4
5418 EOF
5419
5420     # MS armasm fails to assemble our PIC constructs
5421     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5422
5423 elif enabled mips; then
5424
5425     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5426     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5427     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5428
5429     # Enable minimum ISA based on selected options
5430     if enabled mips64; then
5431         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5432         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5433         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5434     else
5435         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5436         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5437         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5438         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5439     fi
5440
5441     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5442     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5443     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5444     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5445     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5446
5447     if enabled bigendian && enabled msa; then
5448         disable msa
5449     fi
5450
5451 elif enabled parisc; then
5452
5453     if enabled gcc; then
5454         case $($cc -dumpversion) in
5455             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5456         esac
5457     fi
5458
5459 elif enabled ppc; then
5460
5461     enable local_aligned
5462
5463     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5464     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5465     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5466     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5467
5468     if enabled altivec; then
5469         check_cflags -maltivec -mabi=altivec
5470
5471         # check if our compiler supports Motorola AltiVec C API
5472         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5473                                  vector signed int v2 = (vector signed int) { 1 };
5474                                  v1 = vec_add(v1, v2);" ||
5475             disable altivec
5476
5477         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5478     fi
5479
5480     if enabled vsx; then
5481         check_cflags -mvsx &&
5482         check_code cc altivec.h "int v[4] = { 0 };
5483                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5484             disable vsx
5485     fi
5486
5487     if enabled power8; then
5488         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5489     fi
5490
5491 elif enabled x86; then
5492
5493     check_builtin rdtsc    intrin.h   "__rdtsc()"
5494     check_builtin mm_empty mmintrin.h "_mm_empty()"
5495
5496     enable local_aligned
5497
5498     # check whether EBP is available on x86
5499     # As 'i' is stored on the stack, this program will crash
5500     # if the base pointer is used to access it because the
5501     # base pointer is cleared in the inline assembly code.
5502     check_exec_crash <<EOF && enable ebp_available
5503 volatile int i=0;
5504 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5505 return i;
5506 EOF
5507
5508     # check whether EBX is available on x86
5509     check_inline_asm ebx_available '""::"b"(0)' &&
5510         check_inline_asm ebx_available '"":::"%ebx"'
5511
5512     # check whether xmm clobbers are supported
5513     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5514
5515     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5516         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5517
5518     # check whether binutils is new enough to compile SSSE3/MMXEXT
5519     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5520     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5521
5522     probe_x86asm(){
5523         x86asmexe_probe=$1
5524         if check_cmd $x86asmexe_probe -v; then
5525             x86asmexe=$x86asmexe_probe
5526             x86asm_type=nasm
5527             x86asm_debug="-g -F dwarf"
5528             X86ASMDEP=
5529             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5530         elif check_cmd $x86asmexe_probe --version; then
5531             x86asmexe=$x86asmexe_probe
5532             x86asm_type=yasm
5533             x86asm_debug="-g dwarf2"
5534             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5535             X86ASM_DEPFLAGS=
5536         fi
5537         check_x86asm "movbe ecx, [5]" && enable x86asm
5538     }
5539
5540     if ! disabled_any asm mmx x86asm; then
5541         disable x86asm
5542         for program in $x86asmexe nasm yasm; do
5543             probe_x86asm $program && break
5544         done
5545         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5546         X86ASMFLAGS="-f $objformat"
5547         enabled pic               && append X86ASMFLAGS "-DPIC"
5548         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5549         case "$objformat" in
5550             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5551         esac
5552
5553         check_x86asm "vmovdqa32 [eax]{k1}{z}, zmm0"    || disable avx512_external
5554         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5555         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5556         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5557         check_x86asm "CPU amdnop" || disable cpunop
5558     fi
5559
5560     case "$cpu" in
5561         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5562             disable fast_clz
5563         ;;
5564     esac
5565
5566 fi
5567
5568 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5569
5570 check_ldflags -Wl,--as-needed
5571 check_ldflags -Wl,-z,noexecstack
5572
5573 if ! disabled network; then
5574     check_func getaddrinfo $network_extralibs
5575     check_func inet_aton $network_extralibs
5576
5577     check_type netdb.h "struct addrinfo"
5578     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5579     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5580     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5581     check_type poll.h "struct pollfd"
5582     check_type netinet/sctp.h "struct sctp_event_subscribe"
5583     check_struct "sys/socket.h" "struct msghdr" msg_flags
5584     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5585     check_type netinet/in.h "struct sockaddr_in6"
5586     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5587     check_type "sys/types.h sys/socket.h" socklen_t
5588
5589     # Prefer arpa/inet.h over winsock2
5590     if check_header arpa/inet.h ; then
5591         check_func closesocket
5592     elif check_header winsock2.h ; then
5593         check_func_headers winsock2.h closesocket -lws2 &&
5594             network_extralibs="-lws2" ||
5595         { check_func_headers winsock2.h closesocket -lws2_32 &&
5596             network_extralibs="-lws2_32"; } || disable winsock2_h network
5597         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5598
5599         check_type ws2tcpip.h socklen_t
5600         check_type ws2tcpip.h "struct addrinfo"
5601         check_type ws2tcpip.h "struct group_source_req"
5602         check_type ws2tcpip.h "struct ip_mreq_source"
5603         check_type ws2tcpip.h "struct ipv6_mreq"
5604         check_type winsock2.h "struct pollfd"
5605         check_struct winsock2.h "struct sockaddr" sa_len
5606         check_type ws2tcpip.h "struct sockaddr_in6"
5607         check_type ws2tcpip.h "struct sockaddr_storage"
5608     else
5609         disable network
5610     fi
5611 fi
5612
5613 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5614 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5615 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5616 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5617 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5618 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5619 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5620
5621 case "$custom_allocator" in
5622     jemalloc)
5623         # jemalloc by default does not use a prefix
5624         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5625     ;;
5626     tcmalloc)
5627         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5628         malloc_prefix=tc_
5629     ;;
5630 esac
5631
5632 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5633 check_func  ${malloc_prefix}memalign            && enable memalign
5634 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5635
5636 check_func  access
5637 check_func_headers stdlib.h arc4random
5638 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5639 check_func  fcntl
5640 check_func  fork
5641 check_func  gethrtime
5642 check_func  getopt
5643 check_func  getrusage
5644 check_func  gettimeofday
5645 check_func  isatty
5646 check_func  mkstemp
5647 check_func  mmap
5648 check_func  mprotect
5649 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5650 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5651 check_func  sched_getaffinity
5652 check_func  setrlimit
5653 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5654 check_func  strerror_r
5655 check_func  sysconf
5656 check_func  sysctl
5657 check_func  usleep
5658
5659 check_func_headers conio.h kbhit
5660 check_func_headers io.h setmode
5661 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5662 check_func_headers mach/mach_time.h mach_absolute_time
5663 check_func_headers stdlib.h getenv
5664 check_func_headers sys/stat.h lstat
5665
5666 check_func_headers windows.h GetProcessAffinityMask
5667 check_func_headers windows.h GetProcessTimes
5668 check_func_headers windows.h GetSystemTimeAsFileTime
5669 check_func_headers windows.h LoadLibrary
5670 check_func_headers windows.h MapViewOfFile
5671 check_func_headers windows.h PeekNamedPipe
5672 check_func_headers windows.h SetConsoleTextAttribute
5673 check_func_headers windows.h SetConsoleCtrlHandler
5674 check_func_headers windows.h Sleep
5675 check_func_headers windows.h VirtualAlloc
5676 check_func_headers glob.h glob
5677 enabled xlib &&
5678     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5679
5680 check_header direct.h
5681 check_header dirent.h
5682 check_header dxgidebug.h
5683 check_header dxva.h
5684 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5685 check_header io.h
5686 check_header libcrystalhd/libcrystalhd_if.h
5687 check_header malloc.h
5688 check_header net/udplite.h
5689 check_header poll.h
5690 check_header sys/param.h
5691 check_header sys/resource.h
5692 check_header sys/select.h
5693 check_header sys/time.h
5694 check_header sys/un.h
5695 check_header termios.h
5696 check_header unistd.h
5697 check_header valgrind/valgrind.h
5698 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5699 check_header windows.h
5700 check_header X11/extensions/XvMClib.h
5701 check_header asm/types.h
5702
5703 # it seems there are versions of clang in some distros that try to use the
5704 # gcc headers, which explodes for stdatomic
5705 # so we also check that atomics actually work here
5706 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5707
5708 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5709 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5710 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5711 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5712 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5713
5714 enabled appkit       && check_apple_framework AppKit
5715 enabled audiotoolbox && check_apple_framework AudioToolbox
5716 enabled avfoundation && check_apple_framework AVFoundation
5717 enabled coreimage    && check_apple_framework CoreImage
5718 enabled videotoolbox && check_apple_framework VideoToolbox
5719
5720 check_apple_framework CoreFoundation
5721 check_apple_framework CoreMedia
5722 check_apple_framework CoreVideo
5723
5724 enabled avfoundation && {
5725     disable coregraphics applicationservices
5726     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5727     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5728
5729 enabled videotoolbox && {
5730     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5731     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5732 }
5733
5734 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5735
5736 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5737 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5738 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5739 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5740 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5741
5742 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5743 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5744 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5745 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5746 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5747 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5748 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5749 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5750 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5751 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5752
5753 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5754
5755 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5756
5757 if ! disabled w32threads && ! enabled pthreads; then
5758     check_func_headers "windows.h process.h" _beginthreadex &&
5759         check_type "windows.h" CONDITION_VARIABLE &&
5760         enable w32threads || disable w32threads
5761     if ! enabled w32threads && enabled winrt; then
5762         check_func_headers "windows.h" CreateThread &&
5763             enable w32threads || disable w32threads
5764     fi
5765 fi
5766
5767 # check for some common methods of building with pthread support
5768 # do this before the optional library checks as some of them require pthreads
5769 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5770     if check_lib pthreads pthread.h pthread_join   -pthread &&
5771        check_lib pthreads pthread.h pthread_create -pthread; then
5772         add_cflags -pthread
5773     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5774          check_lib pthreads pthread.h pthread_create -pthreads; then
5775         add_cflags -pthreads
5776     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5777          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5778         add_cflags -ldl -pthread
5779     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5780          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5781         :
5782     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5783          check_lib pthreads pthread.h pthread_create -lpthread; then
5784         :
5785     elif check_func pthread_join && check_func pthread_create; then
5786         enable pthreads
5787     fi
5788     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5789
5790     if enabled pthreads; then
5791         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5792         check_func pthread_cancel $pthreads_extralibs
5793     fi
5794 fi
5795
5796 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5797 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5798 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5799
5800 # On some systems dynamic loading requires no extra linker flags
5801 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5802
5803 check_lib libm math.h sin -lm
5804
5805 atan2f_args=2
5806 copysign_args=2
5807 hypot_args=2
5808 ldexpf_args=2
5809 powf_args=2
5810
5811 for func in $MATH_FUNCS; do
5812     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5813 done
5814
5815 for func in $COMPLEX_FUNCS; do
5816     eval check_complexfunc $func \${${func}_args:-1}
5817 done
5818
5819 # these are off by default, so fail if requested and not available
5820 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5821 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5822 enabled decklink          && { require_header DeckLinkAPI.h &&
5823                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5824 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5825 enabled frei0r            && require_header frei0r.h
5826 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5827 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5828 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5829 enabled ladspa            && require_header ladspa.h
5830 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5831 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5832 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5833 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5834 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5835 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5836                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5837                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5838 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5839 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5840 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5841 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5842                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5843                                  warn "using libfdk without pkg-config"; } }
5844 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"
5845 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5846 enabled fontconfig        && enable libfontconfig
5847 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5848 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5849 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5850 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5851                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5852 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5853                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5854                                done || die "ERROR: libgsm not found"; }
5855 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5856 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5857 # While it may appear that require is being used as a pkg-config
5858 # fallback for libmfx, it is actually being used to detect a different
5859 # installation route altogether.  If libmfx is installed via the Intel
5860 # Media SDK or Intel Media Server Studio, these don't come with
5861 # pkg-config support.  Instead, users should make sure that the build
5862 # can find the libraries and headers through other means.
5863 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5864                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5865 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5866 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5867 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5868 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5869                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5870                                die "ERROR: libnpp not found"; }
5871 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5872 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5873 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5874                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5875                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5876                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5877 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5878 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5879                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5880 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5881 enabled libopus           && {
5882     enabled libopus_decoder && {
5883         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5884     }
5885     enabled libopus_encoder && {
5886         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5887     }
5888 }
5889 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5890 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5891 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5892 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5893 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5894 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5895                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5896 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5897 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5898 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5899 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5900 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5901 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5902 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
5903 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5904                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5905                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5906 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5907 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5908 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 0.6.2" libvmaf.h compute_vmaf
5909 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5910 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5911                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5912
5913 enabled libvpx            && {
5914     enabled libvpx_vp8_decoder && {
5915         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5916             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5917                 die "ERROR: libvpx decoder version must be >=1.4.0";
5918     }
5919     enabled libvpx_vp8_encoder && {
5920         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5921             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5922                 die "ERROR: libvpx encoder version must be >=1.4.0";
5923     }
5924     enabled libvpx_vp9_decoder && {
5925         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5926             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5927     }
5928     enabled libvpx_vp9_encoder && {
5929         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5930             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5931     }
5932     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5933         die "libvpx enabled but no supported decoders found"
5934     fi
5935 }
5936
5937 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5938 enabled libwebp           && {
5939     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5940     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5941 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5942                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
5943                                  warn "using libx264 without pkg-config"; } } &&
5944                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5945                              { check_cpp_condition x264.h "X264_MPEG2" &&
5946                                enable libx262; }
5947 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5948                              require_cpp_condition x265.h "X265_BUILD >= 68"
5949 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5950 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5951 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
5952 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5953 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5954                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5955                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5956 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5957 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5958 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5959                                { ! enabled cross_compile &&
5960                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5961                                  add_ldflags -L/opt/vc/lib/ &&
5962                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5963                                die "ERROR: mmal not found" &&
5964                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5965 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5966                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5967                                die "ERROR: openal not found"; } &&
5968                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5969                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5970 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5971                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5972                                die "ERROR: opencl not found"; } &&
5973                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5974                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5975                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5976 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5977                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5978                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5979                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5980                                die "ERROR: opengl not found."
5981                              }
5982 enabled omx               && require_header OMX_Core.h
5983 enabled omx_rpi           && { check_header OMX_Core.h ||
5984                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5985                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5986 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5987                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5988                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5989                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5990                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5991                                die "ERROR: openssl not found"; }
5992 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
5993                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
5994                                { enabled libdrm ||
5995                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5996                              }
5997
5998 if enabled gcrypt; then
5999     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6000     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6001         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6002         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6003         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6004             die "ERROR: gcrypt not found"
6005         add_cflags $gcrypt_cflags
6006     else
6007         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6008     fi
6009 fi
6010
6011 if enabled sdl2; then
6012     SDL2_CONFIG="${cross_prefix}sdl2-config"
6013     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6014     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6015         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6016         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6017         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6018         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6019         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6020             enable sdl2
6021     fi
6022     if test $target_os = "mingw32"; then
6023         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6024     fi
6025 fi
6026
6027 if enabled decklink; then
6028     case $target_os in
6029         mingw32*|mingw64*|win32|win64)
6030             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6031             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6032             ;;
6033     esac
6034 fi
6035
6036 enabled securetransport &&
6037     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6038     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6039         disable securetransport
6040
6041 enabled securetransport &&
6042     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6043
6044 enabled schannel &&
6045     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6046     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6047     schannel_extralibs="-lsecur32" ||
6048         disable schannel
6049
6050 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6051 enabled makeinfo \
6052     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6053     && enable makeinfo_html || disable makeinfo_html
6054 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6055 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6056 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6057 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6058
6059 # check V4L2 codecs available in the API
6060 check_header linux/fb.h
6061 check_header linux/videodev2.h
6062 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6063 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6064 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6065 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6066 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6067 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6068 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6069 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6072 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6073
6074 check_header sys/videoio.h
6075 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6076
6077 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6078 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6079 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6080 # w32api 3.12 had it defined wrong
6081 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6082
6083 check_type "dshow.h" IBaseFilter
6084
6085 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6086 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6087     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6088     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6089     check_header "dev/ic/bt8xx.h"
6090
6091 if check_struct sys/soundcard.h audio_buf_info bytes; then
6092     enable_sanitized sys/soundcard.h
6093 else
6094     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6095     #include <sys/soundcard.h>
6096     audio_buf_info abc;
6097 EOF
6098 fi
6099
6100 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6101     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6102
6103 enabled libjack &&
6104     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6105
6106 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6107
6108 if enabled libcdio; then
6109     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6110     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6111     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6112     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6113     die "ERROR: No usable libcdio/cdparanoia found"
6114 fi
6115
6116 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6117     disable libxcb_shm libxcb_shape libxcb_xfixes
6118
6119 if enabled libxcb; then
6120     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6121     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6122     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6123 fi
6124
6125 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6126
6127 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6128 # the desktop api partition
6129 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6130 #ifdef WINAPI_FAMILY
6131 #include <winapifamily.h>
6132 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6133 #error desktop, not uwp
6134 #else
6135 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6136 #endif
6137 #else
6138 #error no family set
6139 #endif
6140 EOF
6141
6142 enabled vaapi &&
6143     check_lib vaapi va/va.h vaInitialize -lva
6144
6145 enabled vaapi &&
6146     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6147     disable vaapi
6148
6149 enabled vaapi &&
6150     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6151
6152 enabled vaapi &&
6153     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6154
6155 enabled vaapi &&
6156     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6157     enable vaapi_1
6158
6159 if enabled_all opencl vaapi ; then
6160     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6161         enable opencl_vaapi_beignet
6162     if enabled libmfx ; then
6163         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6164             enable opencl_vaapi_intel_media
6165     fi
6166 fi
6167
6168 if enabled_all opencl dxva2 ; then
6169     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6170         enable opencl_dxva2
6171 fi
6172
6173 if enabled_all opencl d3d11va ; then
6174     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6175         enable opencl_d3d11
6176 fi
6177
6178 if enabled_all opencl libdrm ; then
6179     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6180         enable opencl_drm_arm
6181 fi
6182
6183 enabled vdpau &&
6184     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6185     disable vdpau
6186
6187 enabled vdpau &&
6188     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6189
6190 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6191
6192 if enabled x86; then
6193     case $target_os in
6194         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6195             ;;
6196         *)
6197             disable cuda cuvid nvdec nvenc
6198             ;;
6199     esac
6200 else
6201     disable cuda cuvid nvdec nvenc
6202 fi
6203
6204 enabled nvenc &&
6205     check_cc -I$source_path <<EOF || disable nvenc
6206 #include "compat/nvenc/nvEncodeAPI.h"
6207 NV_ENCODE_API_FUNCTION_LIST flist;
6208 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6209 int main(void) { return 0; }
6210 EOF
6211
6212 enabled amf &&
6213     check_cpp_condition "AMF/core/Version.h" \
6214         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001" ||
6215     disable amf
6216
6217 # Funny iconv installations are not unusual, so check it after all flags have been set
6218 if enabled libc_iconv; then
6219     check_func_headers iconv.h iconv
6220 elif enabled iconv; then
6221     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6222 fi
6223
6224 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6225
6226 # add some useful compiler flags if supported
6227 check_cflags -Wdeclaration-after-statement
6228 check_cflags -Wall
6229 check_cflags -Wdisabled-optimization
6230 check_cflags -Wpointer-arith
6231 check_cflags -Wredundant-decls
6232 check_cflags -Wwrite-strings
6233 check_cflags -Wtype-limits
6234 check_cflags -Wundef
6235 check_cflags -Wmissing-prototypes
6236 check_cflags -Wno-pointer-to-int-cast
6237 check_cflags -Wstrict-prototypes
6238 check_cflags -Wempty-body
6239
6240 if enabled extra_warnings; then
6241     check_cflags -Wcast-qual
6242     check_cflags -Wextra
6243     check_cflags -Wpedantic
6244 fi
6245
6246 check_disable_warning(){
6247     warning_flag=-W${1#-Wno-}
6248     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6249 }
6250
6251 test_cflags -Werror=unused-command-line-argument &&
6252     append unknown_warning_flags "-Werror=unused-command-line-argument"
6253 test_cflags -Werror=unknown-warning-option &&
6254     append unknown_warning_flags "-Werror=unknown-warning-option"
6255
6256 check_disable_warning -Wno-parentheses
6257 check_disable_warning -Wno-switch
6258 check_disable_warning -Wno-format-zero-length
6259 check_disable_warning -Wno-pointer-sign
6260 check_disable_warning -Wno-unused-const-variable
6261 check_disable_warning -Wno-bool-operation
6262
6263 check_disable_warning_headers(){
6264     warning_flag=-W${1#-Wno-}
6265     test_cflags $warning_flag && add_cflags_headers $1
6266 }
6267
6268 check_disable_warning_headers -Wno-deprecated-declarations
6269 check_disable_warning_headers -Wno-unused-variable
6270
6271 check_cc <<EOF && enable blocks_extension
6272 void (^block)(void);
6273 EOF
6274
6275 # add some linker flags
6276 check_ldflags -Wl,--warn-common
6277 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6278 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6279 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6280
6281 # add some strip flags
6282 check_stripflags -x
6283
6284 enabled neon_clobber_test &&
6285     check_ldflags -Wl,--wrap,avcodec_open2              \
6286                   -Wl,--wrap,avcodec_decode_audio4      \
6287                   -Wl,--wrap,avcodec_decode_video2      \
6288                   -Wl,--wrap,avcodec_decode_subtitle2   \
6289                   -Wl,--wrap,avcodec_encode_audio2      \
6290                   -Wl,--wrap,avcodec_encode_video2      \
6291                   -Wl,--wrap,avcodec_encode_subtitle    \
6292                   -Wl,--wrap,avcodec_send_packet        \
6293                   -Wl,--wrap,avcodec_receive_packet     \
6294                   -Wl,--wrap,avcodec_send_frame         \
6295                   -Wl,--wrap,avcodec_receive_frame      \
6296                   -Wl,--wrap,swr_convert                \
6297                   -Wl,--wrap,avresample_convert ||
6298     disable neon_clobber_test
6299
6300 enabled xmm_clobber_test &&
6301     check_ldflags -Wl,--wrap,avcodec_open2              \
6302                   -Wl,--wrap,avcodec_decode_audio4      \
6303                   -Wl,--wrap,avcodec_decode_video2      \
6304                   -Wl,--wrap,avcodec_decode_subtitle2   \
6305                   -Wl,--wrap,avcodec_encode_audio2      \
6306                   -Wl,--wrap,avcodec_encode_video2      \
6307                   -Wl,--wrap,avcodec_encode_subtitle    \
6308                   -Wl,--wrap,avcodec_send_packet        \
6309                   -Wl,--wrap,avcodec_receive_packet     \
6310                   -Wl,--wrap,avcodec_send_frame         \
6311                   -Wl,--wrap,avcodec_receive_frame      \
6312                   -Wl,--wrap,swr_convert                \
6313                   -Wl,--wrap,avresample_convert         \
6314                   -Wl,--wrap,sws_scale ||
6315     disable xmm_clobber_test
6316
6317 check_ld "cc" <<EOF && enable proper_dce
6318 extern const int array[512];
6319 static inline int func(void) { return array[0]; }
6320 int main(void) { return 0; }
6321 EOF
6322
6323 if enabled proper_dce; then
6324     echo "X { local: *; };" > $TMPV
6325     if test_ldflags -Wl,${version_script},$TMPV; then
6326         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6327         quotes='""'
6328         check_cc <<EOF && enable symver_asm_label
6329 void ff_foo(void) __asm__ ("av_foo@VERSION");
6330 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6331 EOF
6332         check_cc <<EOF && enable symver_gnu_asm
6333 __asm__(".symver ff_foo,av_foo@VERSION");
6334 void ff_foo(void) {}
6335 EOF
6336     fi
6337 fi
6338
6339 if [ -z "$optflags" ]; then
6340     if enabled small; then
6341         optflags=$cflags_size
6342     elif enabled optimizations; then
6343         optflags=$cflags_speed
6344     else
6345         optflags=$cflags_noopt
6346     fi
6347 fi
6348
6349 if [ -z "$nvccflags" ]; then
6350     nvccflags=$nvccflags_default
6351 fi
6352
6353 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6354     nvccflags="$nvccflags -m64"
6355 else
6356     nvccflags="$nvccflags -m32"
6357 fi
6358
6359 check_optflags(){
6360     check_cflags "$@"
6361     enabled lto && check_ldflags "$@"
6362 }
6363
6364 check_optflags $optflags
6365 check_optflags -fno-math-errno
6366 check_optflags -fno-signed-zeros
6367
6368 if enabled lto; then
6369     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6370     check_cflags  -flto
6371     check_ldflags -flto $cpuflags
6372     disable inline_asm_direct_symbol_refs
6373 fi
6374
6375 enabled ftrapv && check_cflags -ftrapv
6376
6377 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6378 int x;
6379 EOF
6380
6381
6382 if enabled icc; then
6383     # Just warnings, no remarks
6384     check_cflags -w1
6385     # -wd: Disable following warnings
6386     # 144, 167, 556: -Wno-pointer-sign
6387     # 188: enumerated type mixed with another type
6388     # 1292: attribute "foo" ignored
6389     # 1419: external declaration in primary source file
6390     # 10006: ignoring unknown option -fno-signed-zeros
6391     # 10148: ignoring unknown option -Wno-parentheses
6392     # 10156: ignoring option '-W'; no argument required
6393     # 13200: No EMMS instruction before call to function
6394     # 13203: No EMMS instruction before return from function
6395     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6396     # 11030: Warning unknown option --as-needed
6397     # 10156: ignoring option '-export'; no argument required
6398     check_ldflags -wd10156,11030
6399     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6400     enable ebp_available
6401     # The test above does not test linking
6402     enabled lto && disable symver_asm_label
6403     if enabled x86_32; then
6404         icc_version=$($cc -dumpversion)
6405         test ${icc_version%%.*} -ge 11 &&
6406             check_cflags -falign-stack=maintain-16-byte ||
6407             disable aligned_stack
6408     fi
6409 elif enabled gcc; then
6410     check_optflags -fno-tree-vectorize
6411     check_cflags -Werror=format-security
6412     check_cflags -Werror=implicit-function-declaration
6413     check_cflags -Werror=missing-prototypes
6414     check_cflags -Werror=return-type
6415     check_cflags -Werror=vla
6416     check_cflags -Wformat
6417     check_cflags -fdiagnostics-color=auto
6418     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6419 elif enabled llvm_gcc; then
6420     check_cflags -mllvm -stack-alignment=16
6421 elif enabled clang; then
6422     check_cflags -mllvm -stack-alignment=16
6423     check_cflags -mstack-alignment=16
6424     check_cflags -Qunused-arguments
6425     check_cflags -Werror=implicit-function-declaration
6426     check_cflags -Werror=missing-prototypes
6427     check_cflags -Werror=return-type
6428 elif enabled cparser; then
6429     add_cflags -Wno-missing-variable-declarations
6430     add_cflags -Wno-empty-statement
6431 elif enabled armcc; then
6432     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6433     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6434     # 2523: use of inline assembly is deprecated
6435     add_cflags -W${armcc_opt},--diag_suppress=2523
6436     add_cflags -W${armcc_opt},--diag_suppress=1207
6437     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6438     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6439     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6440     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6441 elif enabled pathscale; then
6442     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6443     disable inline_asm
6444 elif enabled_any msvc icl; then
6445     enabled x86_32 && disable aligned_stack
6446     enabled_all x86_32 debug && add_cflags -Oy-
6447     enabled debug && add_ldflags -debug
6448     enable pragma_deprecated
6449     if enabled icl; then
6450         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6451         # (correctly) on icl 13.x.
6452         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6453             add_cflags -Qansi-alias
6454         # Some inline asm is not compilable in debug
6455         if enabled debug; then
6456             disable ebp_available
6457             disable ebx_available
6458         fi
6459     fi
6460     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6461     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6462     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6463     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6464     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6465     # MSVC 2013 and newer can handle it fine.
6466     # If this declspec fails, force including stdlib.h before the restrict redefinition
6467     # happens in config.h.
6468     if [ $_restrict != restrict ]; then
6469         check_cc <<EOF || add_cflags -FIstdlib.h
6470 __declspec($_restrict) void* foo(int);
6471 EOF
6472     fi
6473     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6474     # Issue has been fixed in MSVC v19.00.24218.
6475     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6476         check_cflags -d2SSAOptimizer-
6477     # enable utf-8 source processing on VS2015 U2 and newer
6478     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6479         add_cflags -utf-8
6480 fi
6481
6482 for pfx in "" host_; do
6483     varname=${pfx%_}cc_type
6484     eval "type=\$$varname"
6485     if [ "$type" = "msvc" ]; then
6486         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6487 static inline int foo(int a) { return a; }
6488 EOF
6489     fi
6490 done
6491
6492 case $as_type in
6493     clang)
6494         add_asflags -Qunused-arguments
6495     ;;
6496 esac
6497
6498 case $ld_type in
6499     clang)
6500         check_ldflags -Qunused-arguments
6501     ;;
6502 esac
6503
6504 enable frame_thread_encoder
6505
6506 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6507
6508 check_deps $CONFIG_LIST       \
6509            $CONFIG_EXTRA      \
6510            $HAVE_LIST         \
6511            $ALL_COMPONENTS    \
6512
6513 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"
6514 enabled avresample && warn "Building with deprecated library libavresample"
6515
6516 if test $target_os = "haiku"; then
6517     disable memalign
6518     disable posix_memalign
6519 fi
6520
6521 flatten_extralibs(){
6522     unset nested_entries
6523     list_name=$1
6524     eval list=\$${1}
6525     for entry in $list; do
6526         entry_copy=$entry
6527         resolve entry_copy
6528         append nested_entries $(filter '*_extralibs' $entry_copy)
6529         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6530         eval $entry="\$flat_entries"
6531     done
6532     append $list_name "$nested_entries"
6533
6534     resolve nested_entries
6535     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6536         flatten_extralibs $list_name
6537     fi
6538 }
6539
6540 flatten_extralibs_wrapper(){
6541     list_name=$1
6542     flatten_extralibs $list_name
6543     unique $list_name
6544     resolve $list_name
6545     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6546     eval printf \''%s'\' \""\$$list_name"\"
6547 }
6548
6549 for linkunit in $LIBRARY_LIST; do
6550     unset current_extralibs
6551     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6552     for comp in ${components}; do
6553         enabled $comp || continue
6554         comp_extralibs="${comp}_extralibs"
6555         append current_extralibs $comp_extralibs
6556     done
6557     eval prepend ${linkunit}_extralibs $current_extralibs
6558 done
6559
6560 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6561     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6562 done
6563
6564 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6565
6566 for thread in $THREADS_LIST; do
6567     if enabled $thread; then
6568         test -n "$thread_type" &&
6569             die "ERROR: Only one thread type must be selected." ||
6570             thread_type="$thread"
6571     fi
6572 done
6573
6574 if disabled stdatomic; then
6575     if enabled atomics_gcc; then
6576         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6577     elif enabled atomics_win32; then
6578         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6579     elif enabled atomics_suncc; then
6580         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6581     elif enabled pthreads; then
6582         add_compat atomics/pthread/stdatomic.o
6583         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6584     else
6585         enabled threads && die "Threading is enabled, but no atomics are available"
6586         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6587     fi
6588 fi
6589
6590 # Check if requested libraries were found.
6591 for lib in $AUTODETECT_LIBS; do
6592     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6593 done
6594
6595 enabled zlib && add_cppflags -DZLIB_CONST
6596
6597 # conditional library dependencies, in linking order
6598 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6599 enabled afir_filter         && prepend avfilter_deps "avcodec"
6600 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6601 enabled aresample_filter    && prepend avfilter_deps "swresample"
6602 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6603 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6604 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6605 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6606 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6607 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6608 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6609 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6610 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6611 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6612 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6613 enabled pan_filter          && prepend avfilter_deps "swresample"
6614 enabled pp_filter           && prepend avfilter_deps "postproc"
6615 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6616 enabled resample_filter && prepend avfilter_deps "avresample"
6617 enabled sab_filter          && prepend avfilter_deps "swscale"
6618 enabled scale_filter    && prepend avfilter_deps "swscale"
6619 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6620 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6621 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6622 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6623 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6624 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6625 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6626 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6627 enabled spp_filter          && prepend avfilter_deps "avcodec"
6628 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6629 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6630 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6631
6632 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6633
6634 #FIXME
6635 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6636
6637 enabled opus_decoder    && prepend avcodec_deps "swresample"
6638
6639 expand_deps(){
6640     lib_deps=${1}_deps
6641     eval "deps=\$$lib_deps"
6642     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6643     unique $lib_deps
6644 }
6645
6646 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6647 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6648
6649 map 'expand_deps $v' $LIBRARY_LIST
6650
6651 license="LGPL version 2.1 or later"
6652 if enabled nonfree; then
6653     license="nonfree and unredistributable"
6654 elif enabled gplv3; then
6655     license="GPL version 3 or later"
6656 elif enabled lgplv3; then
6657     license="LGPL version 3 or later"
6658 elif enabled gpl; then
6659     license="GPL version 2 or later"
6660 fi
6661
6662 if test "$quiet" != "yes"; then
6663
6664 echo "install prefix            $prefix"
6665 echo "source path               $source_path"
6666 echo "C compiler                $cc"
6667 echo "C library                 $libc_type"
6668 if test "$host_cc" != "$cc"; then
6669     echo "host C compiler           $host_cc"
6670     echo "host C library            $host_libc_type"
6671 fi
6672 echo "ARCH                      $arch ($cpu)"
6673 if test "$build_suffix" != ""; then
6674     echo "build suffix              $build_suffix"
6675 fi
6676 if test "$progs_suffix" != ""; then
6677     echo "progs suffix              $progs_suffix"
6678 fi
6679 if test "$extra_version" != ""; then
6680     echo "version string suffix     $extra_version"
6681 fi
6682 echo "big-endian                ${bigendian-no}"
6683 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6684 if enabled x86; then
6685     echo "standalone assembly       ${x86asm-no}"
6686     echo "x86 assembler             ${x86asmexe}"
6687     echo "MMX enabled               ${mmx-no}"
6688     echo "MMXEXT enabled            ${mmxext-no}"
6689     echo "3DNow! enabled            ${amd3dnow-no}"
6690     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6691     echo "SSE enabled               ${sse-no}"
6692     echo "SSSE3 enabled             ${ssse3-no}"
6693     echo "AESNI enabled             ${aesni-no}"
6694     echo "AVX enabled               ${avx-no}"
6695     echo "AVX2 enabled              ${avx2-no}"
6696     echo "AVX-512 enabled           ${avx512-no}"
6697     echo "XOP enabled               ${xop-no}"
6698     echo "FMA3 enabled              ${fma3-no}"
6699     echo "FMA4 enabled              ${fma4-no}"
6700     echo "i686 features enabled     ${i686-no}"
6701     echo "CMOV is fast              ${fast_cmov-no}"
6702     echo "EBX available             ${ebx_available-no}"
6703     echo "EBP available             ${ebp_available-no}"
6704 fi
6705 if enabled aarch64; then
6706     echo "NEON enabled              ${neon-no}"
6707     echo "VFP enabled               ${vfp-no}"
6708 fi
6709 if enabled arm; then
6710     echo "ARMv5TE enabled           ${armv5te-no}"
6711     echo "ARMv6 enabled             ${armv6-no}"
6712     echo "ARMv6T2 enabled           ${armv6t2-no}"
6713     echo "VFP enabled               ${vfp-no}"
6714     echo "NEON enabled              ${neon-no}"
6715     echo "THUMB enabled             ${thumb-no}"
6716 fi
6717 if enabled mips; then
6718     echo "MIPS FPU enabled          ${mipsfpu-no}"
6719     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6720     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6721     echo "MIPS MSA enabled          ${msa-no}"
6722     echo "LOONGSON MMI enabled      ${mmi-no}"
6723 fi
6724 if enabled ppc; then
6725     echo "AltiVec enabled           ${altivec-no}"
6726     echo "VSX enabled               ${vsx-no}"
6727     echo "POWER8 enabled            ${power8-no}"
6728     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6729     echo "dcbzl available           ${dcbzl-no}"
6730 fi
6731 echo "debug symbols             ${debug-no}"
6732 echo "strip symbols             ${stripping-no}"
6733 echo "optimize for size         ${small-no}"
6734 echo "optimizations             ${optimizations-no}"
6735 echo "static                    ${static-no}"
6736 echo "shared                    ${shared-no}"
6737 echo "postprocessing support    ${postproc-no}"
6738 echo "network support           ${network-no}"
6739 echo "threading support         ${thread_type-no}"
6740 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6741 echo "texi2html enabled         ${texi2html-no}"
6742 echo "perl enabled              ${perl-no}"
6743 echo "pod2man enabled           ${pod2man-no}"
6744 echo "makeinfo enabled          ${makeinfo-no}"
6745 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6746 test -n "$random_seed" &&
6747     echo "random seed               ${random_seed}"
6748 echo
6749
6750 echo "External libraries:"
6751 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6752 echo
6753
6754 echo "External libraries providing hardware acceleration:"
6755 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6756 echo
6757
6758 echo "Libraries:"
6759 print_enabled '' $LIBRARY_LIST | print_in_columns
6760 echo
6761
6762 echo "Programs:"
6763 print_enabled '' $PROGRAM_LIST | print_in_columns
6764 echo
6765
6766 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6767     echo "Enabled ${type}s:"
6768     eval list=\$$(toupper $type)_LIST
6769     print_enabled '_*' $list | print_in_columns
6770     echo
6771 done
6772
6773 if test -n "$ignore_tests"; then
6774     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6775     echo "Ignored FATE tests:"
6776     echo $ignore_tests | print_in_columns
6777     echo
6778 fi
6779
6780 echo "License: $license"
6781
6782 fi # test "$quiet" != "yes"
6783
6784 if test -n "$WARNINGS"; then
6785     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6786     enabled fatal_warnings && exit 1
6787 fi
6788
6789 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6790
6791 esc(){
6792     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6793 }
6794
6795 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6796
6797 enabled stripping || strip="echo skipping strip"
6798 enabled stripping || striptype=""
6799
6800 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6801
6802 cat > ffbuild/config.mak <<EOF
6803 # Automatically generated by configure - do not modify!
6804 ifndef FFMPEG_CONFIG_MAK
6805 FFMPEG_CONFIG_MAK=1
6806 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6807 prefix=$prefix
6808 LIBDIR=\$(DESTDIR)$libdir
6809 SHLIBDIR=\$(DESTDIR)$shlibdir
6810 INCDIR=\$(DESTDIR)$incdir
6811 BINDIR=\$(DESTDIR)$bindir
6812 DATADIR=\$(DESTDIR)$datadir
6813 DOCDIR=\$(DESTDIR)$docdir
6814 MANDIR=\$(DESTDIR)$mandir
6815 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6816 INSTALL_NAME_DIR=$install_name_dir
6817 SRC_PATH=$source_path
6818 SRC_LINK=$source_link
6819 ifndef MAIN_MAKEFILE
6820 SRC_PATH:=\$(SRC_PATH:.%=..%)
6821 endif
6822 CC_IDENT=$cc_ident
6823 ARCH=$arch
6824 INTRINSICS=$intrinsics
6825 EXTERN_PREFIX=$extern_prefix
6826 CC=$cc
6827 CXX=$cxx
6828 AS=$as
6829 OBJCC=$objcc
6830 LD=$ld
6831 DEPCC=$dep_cc
6832 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6833 DEPAS=$as
6834 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6835 X86ASM=$x86asmexe
6836 DEPX86ASM=$x86asmexe
6837 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6838 AR=$ar
6839 ARFLAGS=$arflags
6840 AR_O=$ar_o
6841 AR_CMD=$ar
6842 NM_CMD=$nm
6843 RANLIB=$ranlib
6844 STRIP=$strip
6845 STRIPTYPE=$striptype
6846 NVCC=$nvcc
6847 CP=cp -p
6848 LN_S=$ln_s
6849 CPPFLAGS=$CPPFLAGS
6850 CFLAGS=$CFLAGS
6851 CXXFLAGS=$CXXFLAGS
6852 OBJCFLAGS=$OBJCFLAGS
6853 ASFLAGS=$ASFLAGS
6854 NVCCFLAGS=$nvccflags
6855 AS_C=$AS_C
6856 AS_O=$AS_O
6857 OBJCC_C=$OBJCC_C
6858 OBJCC_E=$OBJCC_E
6859 OBJCC_O=$OBJCC_O
6860 CC_C=$CC_C
6861 CC_E=$CC_E
6862 CC_O=$CC_O
6863 CXX_C=$CXX_C
6864 CXX_O=$CXX_O
6865 NVCC_C=$NVCC_C
6866 NVCC_O=$NVCC_O
6867 LD_O=$LD_O
6868 X86ASM_O=$X86ASM_O
6869 LD_LIB=$LD_LIB
6870 LD_PATH=$LD_PATH
6871 WINDRES=$windres
6872 DEPWINDRES=$dep_cc
6873 DOXYGEN=$doxygen
6874 LDFLAGS=$LDFLAGS
6875 LDEXEFLAGS=$LDEXEFLAGS
6876 LDSOFLAGS=$LDSOFLAGS
6877 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6878 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6879 X86ASMFLAGS=$X86ASMFLAGS
6880 BUILDSUF=$build_suffix
6881 PROGSSUF=$progs_suffix
6882 FULLNAME=$FULLNAME
6883 LIBPREF=$LIBPREF
6884 LIBSUF=$LIBSUF
6885 LIBNAME=$LIBNAME
6886 SLIBPREF=$SLIBPREF
6887 SLIBSUF=$SLIBSUF
6888 EXESUF=$EXESUF
6889 EXTRA_VERSION=$extra_version
6890 CCDEP=$CCDEP
6891 CXXDEP=$CXXDEP
6892 CCDEP_FLAGS=$CCDEP_FLAGS
6893 ASDEP=$ASDEP
6894 ASDEP_FLAGS=$ASDEP_FLAGS
6895 X86ASMDEP=$X86ASMDEP
6896 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6897 CC_DEPFLAGS=$CC_DEPFLAGS
6898 AS_DEPFLAGS=$AS_DEPFLAGS
6899 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6900 HOSTCC=$host_cc
6901 HOSTLD=$host_ld
6902 HOSTCFLAGS=$host_cflags
6903 HOSTCPPFLAGS=$host_cppflags
6904 HOSTEXESUF=$HOSTEXESUF
6905 HOSTLDFLAGS=$host_ldflags
6906 HOSTEXTRALIBS=$host_extralibs
6907 DEPHOSTCC=$host_cc
6908 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6909 HOSTCCDEP=$HOSTCCDEP
6910 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6911 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6912 HOSTCC_C=$HOSTCC_C
6913 HOSTCC_O=$HOSTCC_O
6914 HOSTLD_O=$HOSTLD_O
6915 TARGET_EXEC=$target_exec $target_exec_args
6916 TARGET_PATH=$target_path
6917 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6918 CFLAGS-ffplay=${sdl2_cflags}
6919 CFLAGS_HEADERS=$CFLAGS_HEADERS
6920 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6921 EXTRALIBS=$extralibs
6922 COMPAT_OBJS=$compat_objs
6923 INSTALL=$install
6924 SLIBNAME=${SLIBNAME}
6925 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6926 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6927 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6928 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6929 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6930 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6931 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6932 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6933 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6934 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6935 NOREDZONE_FLAGS=$noredzone_flags
6936 LIBFUZZER_PATH=$libfuzzer_path
6937 IGNORE_TESTS=$ignore_tests
6938 EOF
6939
6940 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6941
6942 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6943     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6944 done
6945
6946 cat > $TMPH <<EOF
6947 /* Automatically generated by configure - do not modify! */
6948 #ifndef FFMPEG_CONFIG_H
6949 #define FFMPEG_CONFIG_H
6950 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6951 #define FFMPEG_LICENSE "$(c_escape $license)"
6952 #define CONFIG_THIS_YEAR 2018
6953 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6954 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6955 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6956 #define av_restrict $_restrict
6957 #define EXTERN_PREFIX "${extern_prefix}"
6958 #define EXTERN_ASM ${extern_prefix}
6959 #define BUILDSUF "$build_suffix"
6960 #define SLIBSUF "$SLIBSUF"
6961 #define HAVE_MMX2 HAVE_MMXEXT
6962 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6963 EOF
6964
6965 test -n "$assert_level" &&
6966     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6967
6968 test -n "$malloc_prefix" &&
6969     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6970
6971 if enabled x86asm; then
6972     append config_files $TMPASM
6973     cat > $TMPASM <<EOF
6974 ; Automatically generated by configure - do not modify!
6975 EOF
6976 fi
6977
6978 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6979
6980
6981 mkdir -p doc
6982 mkdir -p tests
6983 mkdir -p tests/api
6984 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6985
6986 print_config ARCH_   "$config_files" $ARCH_LIST
6987 print_config HAVE_   "$config_files" $HAVE_LIST
6988 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6989                                      $CONFIG_EXTRA      \
6990                                      $ALL_COMPONENTS    \
6991
6992 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6993 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6994
6995 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6996 cp_if_changed $TMPH config.h
6997 touch ffbuild/.config
6998
6999 enabled x86asm && cp_if_changed $TMPASM config.asm
7000
7001 cat > $TMPH <<EOF
7002 /* Generated by ffmpeg configure */
7003 #ifndef AVUTIL_AVCONFIG_H
7004 #define AVUTIL_AVCONFIG_H
7005 EOF
7006
7007 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7008
7009 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7010
7011 cp_if_changed $TMPH libavutil/avconfig.h
7012
7013 # generate the lists of enabled components
7014 print_enabled_components(){
7015     file=$1
7016     struct_name=$2
7017     name=$3
7018     shift 3
7019     echo "static const $struct_name * const $name[] = {" > $TMPH
7020     for c in $*; do
7021         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7022     done
7023     echo "    NULL };" >> $TMPH
7024     cp_if_changed $TMPH $file
7025 }
7026
7027 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7028 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7029
7030 # Settings for pkg-config files
7031
7032 cat > $TMPH <<EOF
7033 # Automatically generated by configure - do not modify!
7034 shared=$shared
7035 build_suffix=$build_suffix
7036 prefix=$prefix
7037 libdir=$libdir
7038 incdir=$incdir
7039 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7040 source_path=${source_path}
7041 LIBPREF=${LIBPREF}
7042 LIBSUF=${LIBSUF}
7043 extralibs_avutil="$avutil_extralibs"
7044 extralibs_avcodec="$avcodec_extralibs"
7045 extralibs_avformat="$avformat_extralibs"
7046 extralibs_avdevice="$avdevice_extralibs"
7047 extralibs_avfilter="$avfilter_extralibs"
7048 extralibs_avresample="$avresample_extralibs"
7049 extralibs_postproc="$postproc_extralibs"
7050 extralibs_swscale="$swscale_extralibs"
7051 extralibs_swresample="$swresample_extralibs"
7052 EOF
7053
7054 for lib in $LIBRARY_LIST; do
7055     lib_deps="$(eval echo \$${lib}_deps)"
7056     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7057 done
7058
7059 cp_if_changed $TMPH ffbuild/config.sh