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   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [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 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-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 324   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 325   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 326
 327 Toolchain options:
 328   --arch=ARCH              select architecture [$arch]
 329   --cpu=CPU                select the minimum required CPU (affects
 330                            instruction selection, may crash on older CPUs)
 331   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 332   --progs-suffix=SUFFIX    program name suffix []
 333   --enable-cross-compile   assume a cross-compiler is used
 334   --sysroot=PATH           root of cross-build tree
 335   --sysinclude=PATH        location of cross-build system headers
 336   --target-os=OS           compiler targets OS [$target_os]
 337   --target-exec=CMD        command to run executables on target
 338   --target-path=DIR        path to view of build directory on target
 339   --target-samples=DIR     path to samples directory on target
 340   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 341   --toolchain=NAME         set tool defaults according to NAME
 342   --nm=NM                  use nm tool NM [$nm_default]
 343   --ar=AR                  use archive tool AR [$ar_default]
 344   --as=AS                  use assembler AS [$as_default]
 345   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 346   --strip=STRIP            use strip tool STRIP [$strip_default]
 347   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 348   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 349   --cc=CC                  use C compiler CC [$cc_default]
 350   --cxx=CXX                use C compiler CXX [$cxx_default]
 351   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 352   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 353   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 354   --ld=LD                  use linker LD [$ld_default]
 355   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 356   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 357   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 358   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 359   --host-cc=HOSTCC         use host C compiler HOSTCC
 360   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 361   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 362   --host-ld=HOSTLD         use host linker HOSTLD
 363   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 364   --host-libs=HLIBS        use libs HLIBS when linking for host
 365   --host-os=OS             compiler host OS [$target_os]
 366   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 367   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 368   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 369   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 370   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 371   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 372   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 373   --extra-version=STRING   version string suffix []
 374   --optflags=OPTFLAGS      override optimization-related compiler flags
 375   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 376   --build-suffix=SUFFIX    library name suffix []
 377   --enable-pic             build position-independent code
 378   --enable-thumb           compile for Thumb instruction set
 379   --enable-lto             use link-time optimization
 380   --env="ENV=override"     override the environment variables
 381
 382 Advanced options (experts only):
 383   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 384   --custom-allocator=NAME  use a supported custom allocator
 385   --disable-symver         disable symbol versioning
 386   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 387   --disable-safe-bitstream-reader
 388                            disable buffer boundary checking in bitreaders
 389                            (faster, but may crash)
 390   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 391
 392 Optimization options (experts only):
 393   --disable-asm            disable all assembly optimizations
 394   --disable-altivec        disable AltiVec optimizations
 395   --disable-vsx            disable VSX optimizations
 396   --disable-power8         disable POWER8 optimizations
 397   --disable-amd3dnow       disable 3DNow! optimizations
 398   --disable-amd3dnowext    disable 3DNow! extended optimizations
 399   --disable-mmx            disable MMX optimizations
 400   --disable-mmxext         disable MMXEXT optimizations
 401   --disable-sse            disable SSE optimizations
 402   --disable-sse2           disable SSE2 optimizations
 403   --disable-sse3           disable SSE3 optimizations
 404   --disable-ssse3          disable SSSE3 optimizations
 405   --disable-sse4           disable SSE4 optimizations
 406   --disable-sse42          disable SSE4.2 optimizations
 407   --disable-avx            disable AVX optimizations
 408   --disable-xop            disable XOP optimizations
 409   --disable-fma3           disable FMA3 optimizations
 410   --disable-fma4           disable FMA4 optimizations
 411   --disable-avx2           disable AVX2 optimizations
 412   --disable-aesni          disable AESNI optimizations
 413   --disable-armv5te        disable armv5te optimizations
 414   --disable-armv6          disable armv6 optimizations
 415   --disable-armv6t2        disable armv6t2 optimizations
 416   --disable-vfp            disable VFP optimizations
 417   --disable-neon           disable NEON optimizations
 418   --disable-inline-asm     disable use of inline assembly
 419   --disable-x86asm         disable use of standalone x86 assembly
 420   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 421   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 422   --disable-msa            disable MSA optimizations
 423   --disable-mipsfpu        disable floating point MIPS optimizations
 424   --disable-mmi            disable Loongson SIMD optimizations
 425   --disable-fast-unaligned consider unaligned accesses slow
 426
 427 Developer options (useful when working on FFmpeg itself):
 428   --disable-debug          disable debugging symbols
 429   --enable-debug=LEVEL     set the debug level [$debuglevel]
 430   --disable-optimizations  disable compiler optimizations
 431   --enable-extra-warnings  enable more compiler warnings
 432   --disable-stripping      disable stripping of executables and shared libraries
 433   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 434                            2 causes a slowdown at runtime.
 435   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 436   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 437                            leaks and errors, using the specified valgrind binary.
 438                            Cannot be combined with --target-exec
 439   --enable-ftrapv          Trap arithmetic overflows
 440   --samples=PATH           location of test samples for FATE, if not set use
 441                            \$FATE_SAMPLES at make invocation time.
 442   --enable-neon-clobber-test check NEON registers for clobbering (should be
 443                            used only for debugging purposes)
 444   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 445                            should be used only for debugging purposes)
 446   --enable-random          randomly enable/disable components
 447   --disable-random
 448   --enable-random=LIST     randomly enable/disable specific components or
 449   --disable-random=LIST    component groups. LIST is a comma-separated list
 450                            of NAME[:PROB] entries where NAME is a component
 451                            (group) and PROB the probability associated with
 452                            NAME (default 0.5).
 453   --random-seed=VALUE      seed value for --enable/disable-random
 454   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 455                            (only applies to --disable-optimizations builds)
 456   --enable-osfuzz          Enable building fuzzer tool
 457   --libfuzzer=PATH         path to libfuzzer
 458   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 459                            in the name) of tests whose result is ignored
 460   --enable-linux-perf      enable Linux Performance Monitor API
 461
 462 NOTE: Object files are built at the place where configure is launched.
 463 EOF
 464   exit 0
 465 }
 466
 467 if test -t 1 && which tput >/dev/null 2>&1; then
 468     ncolors=$(tput colors)
 469     if test -n "$ncolors" && test $ncolors -ge 8; then
 470         bold_color=$(tput bold)
 471         warn_color=$(tput setaf 3)
 472         error_color=$(tput setaf 1)
 473         reset_color=$(tput sgr0)
 474     fi
 475     # 72 used instead of 80 since that's the default of pr
 476     ncols=$(tput cols)
 477 fi
 478 : ${ncols:=72}
 479
 480 log(){
 481     echo "$@" >> $logfile
 482 }
 483
 484 log_file(){
 485     log BEGIN $1
 486     pr -n -t $1 >> $logfile
 487     log END $1
 488 }
 489
 490 warn(){
 491     log "WARNING: $*"
 492     WARNINGS="${WARNINGS}WARNING: $*\n"
 493 }
 494
 495 die(){
 496     log "$@"
 497     echo "$error_color$bold_color$@$reset_color"
 498     cat <<EOF
 499
 500 If you think configure made a mistake, make sure you are using the latest
 501 version from Git.  If the latest version fails, report the problem to the
 502 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 503 EOF
 504     if disabled logging; then
 505         cat <<EOF
 506 Rerun configure with logging enabled (do not use --disable-logging), and
 507 include the log this produces with your report.
 508 EOF
 509     else
 510         cat <<EOF
 511 Include the log file "$logfile" produced by configure as this will help
 512 solve the problem.
 513 EOF
 514     fi
 515     exit 1
 516 }
 517
 518 # Avoid locale weirdness, besides we really just want to translate ASCII.
 519 toupper(){
 520     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 521 }
 522
 523 tolower(){
 524     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 525 }
 526
 527 c_escape(){
 528     echo "$*" | sed 's/["\\]/\\\0/g'
 529 }
 530
 531 sh_quote(){
 532     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 533     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 534     echo "$v"
 535 }
 536
 537 cleanws(){
 538     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 539 }
 540
 541 filter(){
 542     pat=$1
 543     shift
 544     for v; do
 545         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 546     done
 547 }
 548
 549 filter_out(){
 550     pat=$1
 551     shift
 552     for v; do
 553         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 554     done
 555 }
 556
 557 map(){
 558     m=$1
 559     shift
 560     for v; do eval $m; done
 561 }
 562
 563 add_suffix(){
 564     suffix=$1
 565     shift
 566     for v; do echo ${v}${suffix}; done
 567 }
 568
 569 set_all(){
 570     value=$1
 571     shift
 572     for var in $*; do
 573         eval $var=$value
 574     done
 575 }
 576
 577 set_weak(){
 578     value=$1
 579     shift
 580     for var; do
 581         eval : \${$var:=$value}
 582     done
 583 }
 584
 585 sanitize_var_name(){
 586     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 587 }
 588
 589 set_sanitized(){
 590     var=$1
 591     shift
 592     eval $(sanitize_var_name "$var")='$*'
 593 }
 594
 595 get_sanitized(){
 596     eval echo \$$(sanitize_var_name "$1")
 597 }
 598
 599 pushvar(){
 600     for pvar in $*; do
 601         eval level=\${${pvar}_level:=0}
 602         eval ${pvar}_${level}="\$$pvar"
 603         eval ${pvar}_level=$(($level+1))
 604     done
 605 }
 606
 607 popvar(){
 608     for pvar in $*; do
 609         eval level=\${${pvar}_level:-0}
 610         test $level = 0 && continue
 611         eval level=$(($level-1))
 612         eval $pvar="\${${pvar}_${level}}"
 613         eval ${pvar}_level=$level
 614         eval unset ${pvar}_${level}
 615     done
 616 }
 617
 618 request(){
 619     for var in $*; do
 620         eval ${var}_requested=yes
 621         eval $var=
 622     done
 623 }
 624
 625 enable(){
 626     set_all yes $*
 627 }
 628
 629 disable(){
 630     set_all no $*
 631 }
 632
 633 enable_weak(){
 634     set_weak yes $*
 635 }
 636
 637 disable_weak(){
 638     set_weak no $*
 639 }
 640
 641 enable_sanitized(){
 642     for var; do
 643         enable $(sanitize_var_name $var)
 644     done
 645 }
 646
 647 disable_sanitized(){
 648     for var; do
 649         disable $(sanitize_var_name $var)
 650     done
 651 }
 652
 653 do_enable_deep(){
 654     for var; do
 655         enabled $var && continue
 656         eval sel="\$${var}_select"
 657         eval sgs="\$${var}_suggest"
 658         pushvar var sgs
 659         enable_deep $sel
 660         popvar sgs
 661         enable_deep_weak $sgs
 662         popvar var
 663     done
 664 }
 665
 666 enable_deep(){
 667     do_enable_deep $*
 668     enable $*
 669 }
 670
 671 enable_deep_weak(){
 672     for var; do
 673         disabled $var && continue
 674         pushvar var
 675         do_enable_deep $var
 676         popvar var
 677         enable_weak $var
 678     done
 679 }
 680
 681 requested(){
 682     test "${1#!}" = "$1" && op="=" || op="!="
 683     eval test "x\$${1#!}_requested" $op "xyes"
 684 }
 685
 686 enabled(){
 687     test "${1#!}" = "$1" && op="=" || op="!="
 688     eval test "x\$${1#!}" $op "xyes"
 689 }
 690
 691 disabled(){
 692     test "${1#!}" = "$1" && op="=" || op="!="
 693     eval test "x\$${1#!}" $op "xno"
 694 }
 695
 696 enabled_all(){
 697     for opt; do
 698         enabled $opt || return 1
 699     done
 700 }
 701
 702 disabled_all(){
 703     for opt; do
 704         disabled $opt || return 1
 705     done
 706 }
 707
 708 enabled_any(){
 709     for opt; do
 710         enabled $opt && return 0
 711     done
 712 }
 713
 714 disabled_any(){
 715     for opt; do
 716         disabled $opt && return 0
 717     done
 718     return 1
 719 }
 720
 721 set_default(){
 722     for opt; do
 723         eval : \${$opt:=\$${opt}_default}
 724     done
 725 }
 726
 727 is_in(){
 728     value=$1
 729     shift
 730     for var in $*; do
 731         [ $var = $value ] && return 0
 732     done
 733     return 1
 734 }
 735
 736 check_deps(){
 737     for cfg; do
 738         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 739         disabled ${cfg}_checking && continue
 740         enable ${cfg}_checking
 741
 742         eval dep_all="\$${cfg}_deps"
 743         eval dep_any="\$${cfg}_deps_any"
 744         eval dep_con="\$${cfg}_conflict"
 745         eval dep_sel="\$${cfg}_select"
 746         eval dep_sgs="\$${cfg}_suggest"
 747         eval dep_ifa="\$${cfg}_if"
 748         eval dep_ifn="\$${cfg}_if_any"
 749
 750         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 752         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 753
 754         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 755         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 756         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 757         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 758         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 759         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 760
 761         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 762
 763         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 764             # filter out library deps, these do not belong in extralibs
 765             is_in $dep $LIBRARY_LIST && continue
 766             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 767         done
 768
 769         disable ${cfg}_checking
 770     done
 771 }
 772
 773 print_config(){
 774     pfx=$1
 775     files=$2
 776     shift 2
 777     map 'eval echo "$v \${$v:-no}"' "$@" |
 778     awk "BEGIN { split(\"$files\", files) }
 779         {
 780             c = \"$pfx\" toupper(\$1);
 781             v = \$2;
 782             sub(/yes/, 1, v);
 783             sub(/no/,  0, v);
 784             for (f in files) {
 785                 file = files[f];
 786                 if (file ~ /\\.h\$/) {
 787                     printf(\"#define %s %d\\n\", c, v) >>file;
 788                 } else if (file ~ /\\.asm\$/) {
 789                     printf(\"%%define %s %d\\n\", c, v) >>file;
 790                 } else if (file ~ /\\.mak\$/) {
 791                     n = -v ? \"\" : \"!\";
 792                     printf(\"%s%s=yes\\n\", n, c) >>file;
 793                 } else if (file ~ /\\.texi\$/) {
 794                     pre = -v ? \"\" : \"@c \";
 795                     yesno = \$2;
 796                     c2 = tolower(c);
 797                     gsub(/_/, \"-\", c2);
 798                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 799                 }
 800             }
 801         }"
 802 }
 803
 804 print_enabled(){
 805     suf=$1
 806     shift
 807     for v; do
 808         enabled $v && printf "%s\n" ${v%$suf}
 809     done
 810 }
 811
 812 append(){
 813     var=$1
 814     shift
 815     eval "$var=\"\$$var $*\""
 816 }
 817
 818 prepend(){
 819     var=$1
 820     shift
 821     eval "$var=\"$* \$$var\""
 822 }
 823
 824 unique(){
 825     var=$1
 826     uniq_list=""
 827     for tok in $(eval echo \$$var); do
 828         uniq_list="$(filter_out $tok $uniq_list) $tok"
 829     done
 830     eval "$var=\"${uniq_list}\""
 831 }
 832
 833 resolve(){
 834     var=$1
 835     tmpvar=
 836     for entry in $(eval echo \$$var); do
 837         tmpvar="$tmpvar $(eval echo \$${entry})"
 838     done
 839     eval "$var=\"${tmpvar}\""
 840 }
 841
 842 add_cppflags(){
 843     append CPPFLAGS "$@"
 844 }
 845
 846 add_cflags(){
 847     append CFLAGS $($cflags_filter "$@")
 848 }
 849
 850 add_cflags_headers(){
 851     append CFLAGS_HEADERS $($cflags_filter "$@")
 852 }
 853
 854 add_cxxflags(){
 855     append CXXFLAGS $($cflags_filter "$@")
 856 }
 857
 858 add_asflags(){
 859     append ASFLAGS $($asflags_filter "$@")
 860 }
 861
 862 add_objcflags(){
 863     append OBJCFLAGS $($objcflags_filter "$@")
 864 }
 865
 866 add_ldflags(){
 867     append LDFLAGS $($ldflags_filter "$@")
 868 }
 869
 870 add_ldexeflags(){
 871     append LDEXEFLAGS $($ldflags_filter "$@")
 872 }
 873
 874 add_ldsoflags(){
 875     append LDSOFLAGS $($ldflags_filter "$@")
 876 }
 877
 878 add_stripflags(){
 879     append ASMSTRIPFLAGS "$@"
 880 }
 881
 882 add_extralibs(){
 883     prepend extralibs $($ldflags_filter "$@")
 884 }
 885
 886 add_host_cppflags(){
 887     append host_cppflags "$@"
 888 }
 889
 890 add_host_cflags(){
 891     append host_cflags $($host_cflags_filter "$@")
 892 }
 893
 894 add_host_ldflags(){
 895     append host_ldflags $($host_ldflags_filter "$@")
 896 }
 897
 898 add_compat(){
 899     append compat_objs $1
 900     shift
 901     map 'add_cppflags -D$v' "$@"
 902 }
 903
 904 check_cmd(){
 905     log "$@"
 906     "$@" >> $logfile 2>&1
 907 }
 908
 909 check_stat(){
 910     log check_stat "$@"
 911     stat "$1" >> $logfile 2>&1
 912 }
 913
 914 cc_o(){
 915     eval printf '%s\\n' $CC_O
 916 }
 917
 918 cc_e(){
 919     eval printf '%s\\n' $CC_E
 920 }
 921
 922 check_cc(){
 923     log check_cc "$@"
 924     cat > $TMPC
 925     log_file $TMPC
 926     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 927 }
 928
 929 check_cxx(){
 930     log check_cxx "$@"
 931     cat > $TMPCPP
 932     log_file $TMPCPP
 933     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 934 }
 935
 936 check_objcc(){
 937     log check_objcc "$@"
 938     cat > $TMPM
 939     log_file $TMPM
 940     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 941 }
 942
 943 check_cpp(){
 944     log check_cpp "$@"
 945     cat > $TMPC
 946     log_file $TMPC
 947     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 948 }
 949
 950 as_o(){
 951     eval printf '%s\\n' $AS_O
 952 }
 953
 954 check_as(){
 955     log check_as "$@"
 956     cat > $TMPS
 957     log_file $TMPS
 958     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 959 }
 960
 961 check_inline_asm(){
 962     log check_inline_asm "$@"
 963     name="$1"
 964     code="$2"
 965     shift 2
 966     disable $name
 967     check_cc "$@" <<EOF && enable $name
 968 void foo(void){ __asm__ volatile($code); }
 969 EOF
 970 }
 971
 972 check_inline_asm_flags(){
 973     log check_inline_asm_flags "$@"
 974     name="$1"
 975     code="$2"
 976     flags=''
 977     shift 2
 978     while [ "$1" != "" ]; do
 979       append flags $1
 980       shift
 981     done;
 982     disable $name
 983     cat > $TMPC <<EOF
 984 void foo(void){ __asm__ volatile($code); }
 985 EOF
 986     log_file $TMPC
 987     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 988     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 989 }
 990
 991 check_insn(){
 992     log check_insn "$@"
 993     check_inline_asm ${1}_inline "\"$2\""
 994     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 995 }
 996
 997 check_x86asm(){
 998     log check_x86asm "$@"
 999     echo "$1" > $TMPS
1000     log_file $TMPS
1001     shift 1
1002     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1003 }
1004
1005 ld_o(){
1006     eval printf '%s\\n' $LD_O
1007 }
1008
1009 check_ld(){
1010     log check_ld "$@"
1011     type=$1
1012     shift 1
1013     flags=$(filter_out '-l*|*.so' $@)
1014     libs=$(filter '-l*|*.so' $@)
1015     check_$type $($cflags_filter $flags) || return
1016     flags=$($ldflags_filter $flags)
1017     libs=$($ldflags_filter $libs)
1018     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1019 }
1020
1021 print_include(){
1022     hdr=$1
1023     test "${hdr%.h}" = "${hdr}" &&
1024         echo "#include $hdr"    ||
1025         echo "#include <$hdr>"
1026 }
1027
1028 check_code(){
1029     log check_code "$@"
1030     check=$1
1031     headers=$2
1032     code=$3
1033     shift 3
1034     {
1035         for hdr in $headers; do
1036             print_include $hdr
1037         done
1038         echo "int main(void) { $code; return 0; }"
1039     } | check_$check "$@"
1040 }
1041
1042 check_cppflags(){
1043     log check_cppflags "$@"
1044     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1045 #include <stdlib.h>
1046 EOF
1047 }
1048
1049 test_cflags(){
1050     log test_cflags "$@"
1051     set -- $($cflags_filter "$@")
1052     check_cc "$@" <<EOF
1053 int x;
1054 EOF
1055 }
1056
1057 check_cflags(){
1058     log check_cflags "$@"
1059     test_cflags "$@" && add_cflags "$@"
1060 }
1061
1062 check_cxxflags(){
1063     log check_cxxflags "$@"
1064     set -- $($cflags_filter "$@")
1065     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1066 int x;
1067 EOF
1068 }
1069
1070 test_objcflags(){
1071     log test_objcflags "$@"
1072     set -- $($objcflags_filter "$@")
1073     check_objcc "$@" <<EOF
1074 int x;
1075 EOF
1076 }
1077
1078 check_objcflags(){
1079     log check_objcflags "$@"
1080     test_objcflags "$@" && add_objcflags "$@"
1081 }
1082
1083 test_ldflags(){
1084     log test_ldflags "$@"
1085     set -- $($ldflags_filter "$@")
1086     check_ld "cc" "$@" <<EOF
1087 int main(void){ return 0; }
1088 EOF
1089 }
1090
1091 check_ldflags(){
1092     log check_ldflags "$@"
1093     test_ldflags "$@" && add_ldflags "$@"
1094 }
1095
1096 test_stripflags(){
1097     log test_stripflags "$@"
1098     # call check_cc to get a fresh TMPO
1099     check_cc <<EOF
1100 int main(void) { return 0; }
1101 EOF
1102     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1103 }
1104
1105 check_stripflags(){
1106     log check_stripflags "$@"
1107     test_stripflags "$@" && add_stripflags "$@"
1108 }
1109
1110 check_header(){
1111     log check_header "$@"
1112     headers=$1
1113     shift
1114     disable_sanitized $headers
1115     {
1116         for hdr in $headers; do
1117             print_include $hdr
1118         done
1119         echo "int x;"
1120     } | check_cpp "$@" && enable_sanitized $headers
1121 }
1122
1123 check_header_objcc(){
1124     log check_header_objcc "$@"
1125     rm -f -- "$TMPO"
1126     header=$1
1127     shift
1128     disable_sanitized $header
1129     {
1130        echo "#include <$header>"
1131        echo "int main(void) { return 0; }"
1132     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1133 }
1134
1135 check_apple_framework(){
1136     log check_apple_framework "$@"
1137     framework="$1"
1138     name="$(tolower $framework)"
1139     header="${framework}/${framework}.h"
1140     disable $name
1141     check_header_objcc $header &&
1142         enable $name && eval ${name}_extralibs='"-framework $framework"'
1143 }
1144
1145 check_func(){
1146     log check_func "$@"
1147     func=$1
1148     shift
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 extern int $func();
1152 int main(void){ $func(); }
1153 EOF
1154 }
1155
1156 check_complexfunc(){
1157     log check_complexfunc "$@"
1158     func=$1
1159     narg=$2
1160     shift 2
1161     test $narg = 2 && args="f, g" || args="f * I"
1162     disable $func
1163     check_ld "cc" "$@" <<EOF && enable $func
1164 #include <complex.h>
1165 #include <math.h>
1166 float foo(complex float f, complex float g) { return $func($args); }
1167 int main(void){ return (int) foo; }
1168 EOF
1169 }
1170
1171 check_mathfunc(){
1172     log check_mathfunc "$@"
1173     func=$1
1174     narg=$2
1175     shift 2
1176     test $narg = 2 && args="f, g" || args="f"
1177     disable $func
1178     check_ld "cc" "$@" <<EOF && enable $func
1179 #include <math.h>
1180 float foo(float f, float g) { return $func($args); }
1181 int main(void){ return (int) foo; }
1182 EOF
1183 }
1184
1185 check_func_headers(){
1186     log check_func_headers "$@"
1187     headers=$1
1188     funcs=$2
1189     shift 2
1190     {
1191         for hdr in $headers; do
1192             print_include $hdr
1193         done
1194         echo "#include <stdint.h>"
1195         for func in $funcs; do
1196             echo "long check_$func(void) { return (long) $func; }"
1197         done
1198         echo "int main(void) { int ret = 0;"
1199         # LTO could optimize out the test functions without this
1200         for func in $funcs; do
1201             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1202         done
1203         echo "return ret; }"
1204     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1205 }
1206
1207 check_class_headers_cpp(){
1208     log check_class_headers_cpp "$@"
1209     headers=$1
1210     classes=$2
1211     shift 2
1212     {
1213         for hdr in $headers; do
1214             echo "#include <$hdr>"
1215         done
1216         echo "int main(void) { "
1217         i=1
1218         for class in $classes; do
1219             echo "$class obj$i;"
1220             i=$(expr $i + 1)
1221         done
1222         echo "return 0; }"
1223     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1224 }
1225
1226 check_cpp_condition(){
1227     log check_cpp_condition "$@"
1228     header=$1
1229     condition=$2
1230     shift 2
1231     check_cpp "$@" <<EOF
1232 #include <$header>
1233 #if !($condition)
1234 #error "unsatisfied condition: $condition"
1235 #endif
1236 EOF
1237 }
1238
1239 test_cflags_cc(){
1240     log test_cflags_cc "$@"
1241     flags=$1
1242     header=$2
1243     condition=$3
1244     shift 3
1245     set -- $($cflags_filter "$flags")
1246     check_cc "$@" <<EOF
1247 #include <$header>
1248 #if !($condition)
1249 #error "unsatisfied condition: $condition"
1250 #endif
1251 EOF
1252 }
1253
1254 check_lib(){
1255     log check_lib "$@"
1256     name="$1"
1257     headers="$2"
1258     funcs="$3"
1259     shift 3
1260     disable $name
1261     check_func_headers "$headers" "$funcs" "$@" &&
1262         enable $name && eval ${name}_extralibs="\$@"
1263 }
1264
1265 check_lib_cpp(){
1266     log check_lib_cpp "$@"
1267     name="$1"
1268     headers="$2"
1269     classes="$3"
1270     shift 3
1271     disable $name
1272     check_class_headers_cpp "$headers" "$classes" "$@" &&
1273         enable $name && eval ${name}_extralibs="\$@"
1274 }
1275
1276 test_pkg_config(){
1277     log test_pkg_config "$@"
1278     name="$1"
1279     pkg_version="$2"
1280     pkg="${2%% *}"
1281     headers="$3"
1282     funcs="$4"
1283     shift 4
1284     disable $name
1285     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1286     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1287     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1288     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1289         enable $name &&
1290         set_sanitized "${name}_cflags"    $pkg_cflags &&
1291         set_sanitized "${name}_extralibs" $pkg_libs
1292 }
1293
1294 check_pkg_config(){
1295     log check_pkg_config "$@"
1296     name="$1"
1297     test_pkg_config "$@" &&
1298         eval add_cflags \$${name}_cflags
1299 }
1300
1301 check_exec(){
1302     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1303 }
1304
1305 check_exec_crash(){
1306     log check_exec_crash "$@"
1307     code=$(cat)
1308
1309     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1310     # are safe but may not be available everywhere.  Thus we use
1311     # raise(SIGTERM) instead.  The check is run in a subshell so we
1312     # can redirect the "Terminated" message from the shell.  SIGBUS
1313     # is not defined by standard C so it is used conditionally.
1314
1315     (check_exec "$@") >> $logfile 2>&1 <<EOF
1316 #include <signal.h>
1317 static void sighandler(int sig){
1318     raise(SIGTERM);
1319 }
1320 int foo(void){
1321     $code
1322 }
1323 int (*func_ptr)(void) = foo;
1324 int main(void){
1325     signal(SIGILL, sighandler);
1326     signal(SIGFPE, sighandler);
1327     signal(SIGSEGV, sighandler);
1328 #ifdef SIGBUS
1329     signal(SIGBUS, sighandler);
1330 #endif
1331     return func_ptr();
1332 }
1333 EOF
1334 }
1335
1336 check_type(){
1337     log check_type "$@"
1338     headers=$1
1339     type=$2
1340     shift 2
1341     disable_sanitized "$type"
1342     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1343 }
1344
1345 check_struct(){
1346     log check_struct "$@"
1347     headers=$1
1348     struct=$2
1349     member=$3
1350     shift 3
1351     disable_sanitized "${struct}_${member}"
1352     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1353         enable_sanitized "${struct}_${member}"
1354 }
1355
1356 check_builtin(){
1357     log check_builtin "$@"
1358     name=$1
1359     headers=$2
1360     builtin=$3
1361     shift 3
1362     disable "$name"
1363     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1364 }
1365
1366 check_compile_assert(){
1367     log check_compile_assert "$@"
1368     name=$1
1369     headers=$2
1370     condition=$3
1371     shift 3
1372     disable "$name"
1373     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1374 }
1375
1376 require(){
1377     log require "$@"
1378     name_version="$1"
1379     name="${1%% *}"
1380     headers="$2"
1381     func="$3"
1382     shift 3
1383     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1384 }
1385
1386 require_cpp(){
1387     name="$1"
1388     headers="$2"
1389     classes="$3"
1390     shift 3
1391     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1392 }
1393
1394 require_header(){
1395     log require_header "$@"
1396     headers="$1"
1397     shift
1398     check_header "$headers" "$@" || die "ERROR: $headers not found"
1399 }
1400
1401 require_cpp_condition(){
1402     log require_cpp_condition "$@"
1403     header="$1"
1404     condition="$2"
1405     shift 2
1406     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1407 }
1408
1409 require_pkg_config(){
1410     log require_pkg_config "$@"
1411     pkg_version="$2"
1412     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1413 }
1414
1415 hostcc_e(){
1416     eval printf '%s\\n' $HOSTCC_E
1417 }
1418
1419 hostcc_o(){
1420     eval printf '%s\\n' $HOSTCC_O
1421 }
1422
1423 check_host_cc(){
1424     log check_host_cc "$@"
1425     cat > $TMPC
1426     log_file $TMPC
1427     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1428 }
1429
1430 check_host_cpp(){
1431     log check_host_cpp "$@"
1432     cat > $TMPC
1433     log_file $TMPC
1434     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1435 }
1436
1437 check_host_cppflags(){
1438     log check_host_cppflags "$@"
1439     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1440 #include <stdlib.h>
1441 EOF
1442 }
1443
1444 check_host_cflags(){
1445     log check_host_cflags "$@"
1446     set -- $($host_cflags_filter "$@")
1447     check_host_cc "$@" <<EOF && append host_cflags "$@"
1448 int x;
1449 EOF
1450 }
1451
1452 check_host_cpp_condition(){
1453     log check_host_cpp_condition "$@"
1454     header=$1
1455     condition=$2
1456     shift 2
1457     check_host_cpp "$@" <<EOF
1458 #include <$header>
1459 #if !($condition)
1460 #error "unsatisfied condition: $condition"
1461 #endif
1462 EOF
1463 }
1464
1465 cp_if_changed(){
1466     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1467     mkdir -p "$(dirname $2)"
1468     cp -f "$1" "$2"
1469 }
1470
1471 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1472 # system-dependent things.
1473
1474 AVCODEC_COMPONENTS="
1475     bsfs
1476     decoders
1477     encoders
1478     hwaccels
1479     parsers
1480 "
1481
1482 AVDEVICE_COMPONENTS="
1483     indevs
1484     outdevs
1485 "
1486
1487 AVFILTER_COMPONENTS="
1488     filters
1489 "
1490
1491 AVFORMAT_COMPONENTS="
1492     demuxers
1493     muxers
1494     protocols
1495 "
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502 "
1503
1504 EXAMPLE_LIST="
1505     avio_dir_cmd_example
1506     avio_reading_example
1507     decode_audio_example
1508     decode_video_example
1509     demuxing_decoding_example
1510     encode_audio_example
1511     encode_video_example
1512     extract_mvs_example
1513     filter_audio_example
1514     filtering_audio_example
1515     filtering_video_example
1516     http_multiclient_example
1517     hw_decode_example
1518     metadata_example
1519     muxing_example
1520     qsvdec_example
1521     remuxing_example
1522     resampling_audio_example
1523     scaling_video_example
1524     transcode_aac_example
1525     transcoding_example
1526     vaapi_encode_example
1527 "
1528
1529 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1530     alsa
1531     appkit
1532     avfoundation
1533     bzlib
1534     coreimage
1535     iconv
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvmaf
1573     libvo_amrwbenc
1574     rkmpp
1575 "
1576
1577 EXTERNAL_LIBRARY_GPLV3_LIST="
1578     libsmbclient
1579 "
1580
1581 EXTERNAL_LIBRARY_LIST="
1582     $EXTERNAL_LIBRARY_GPL_LIST
1583     $EXTERNAL_LIBRARY_NONFREE_LIST
1584     $EXTERNAL_LIBRARY_VERSION3_LIST
1585     $EXTERNAL_LIBRARY_GPLV3_LIST
1586     chromaprint
1587     gcrypt
1588     gnutls
1589     jni
1590     ladspa
1591     libass
1592     libbluray
1593     libbs2b
1594     libcaca
1595     libcelt
1596     libdc1394
1597     libdrm
1598     libflite
1599     libfontconfig
1600     libfreetype
1601     libfribidi
1602     libgme
1603     libgsm
1604     libiec61883
1605     libilbc
1606     libjack
1607     libkvazaar
1608     libmodplug
1609     libmp3lame
1610     libmysofa
1611     libopencv
1612     libopenh264
1613     libopenjpeg
1614     libopenmpt
1615     libopus
1616     libpulse
1617     librsvg
1618     librtmp
1619     libshine
1620     libsmbclient
1621     libsnappy
1622     libsoxr
1623     libspeex
1624     libssh
1625     libtesseract
1626     libtheora
1627     libtwolame
1628     libv4l2
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     lv2
1638     mediacodec
1639     openal
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     amf
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvdec
1652     nvenc
1653     vaapi
1654     vdpau
1655     videotoolbox
1656     v4l2_m2m
1657     xvmc
1658 "
1659
1660 # catchall list of things that require external libs to link
1661 EXTRALIBS_LIST="
1662     cpu_init
1663     cws2fws
1664 "
1665
1666 HWACCEL_LIBRARY_NONFREE_LIST="
1667     cuda_sdk
1668     libnpp
1669 "
1670
1671 HWACCEL_LIBRARY_LIST="
1672     $HWACCEL_LIBRARY_NONFREE_LIST
1673     libmfx
1674     mmal
1675     omx
1676     opencl
1677 "
1678
1679 DOCUMENT_LIST="
1680     doc
1681     htmlpages
1682     manpages
1683     podpages
1684     txtpages
1685 "
1686
1687 FEATURE_LIST="
1688     ftrapv
1689     gray
1690     hardcoded_tables
1691     omx_rpi
1692     runtime_cpudetect
1693     safe_bitstream_reader
1694     shared
1695     small
1696     static
1697     swscale_alpha
1698 "
1699
1700 LIBRARY_LIST="
1701     avcodec
1702     avdevice
1703     avfilter
1704     avformat
1705     avresample
1706     avutil
1707     postproc
1708     swresample
1709     swscale
1710 "
1711
1712 LICENSE_LIST="
1713     gpl
1714     nonfree
1715     version3
1716 "
1717
1718 PROGRAM_LIST="
1719     ffplay
1720     ffprobe
1721     ffserver
1722     ffmpeg
1723 "
1724
1725 SUBSYSTEM_LIST="
1726     dct
1727     dwt
1728     error_resilience
1729     faan
1730     fast_unaligned
1731     fft
1732     lsp
1733     lzo
1734     mdct
1735     pixelutils
1736     network
1737     rdft
1738 "
1739
1740 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1741 CONFIG_LIST="
1742     $DOCUMENT_LIST
1743     $EXAMPLE_LIST
1744     $EXTERNAL_LIBRARY_LIST
1745     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1746     $HWACCEL_LIBRARY_LIST
1747     $HWACCEL_AUTODETECT_LIBRARY_LIST
1748     $FEATURE_LIST
1749     $LICENSE_LIST
1750     $LIBRARY_LIST
1751     $PROGRAM_LIST
1752     $SUBSYSTEM_LIST
1753     autodetect
1754     fontconfig
1755     linux_perf
1756     memory_poisoning
1757     neon_clobber_test
1758     ossfuzz
1759     pic
1760     thumb
1761     valgrind_backtrace
1762     xmm_clobber_test
1763     $COMPONENT_LIST
1764 "
1765
1766 THREADS_LIST="
1767     pthreads
1768     os2threads
1769     w32threads
1770 "
1771
1772 ATOMICS_LIST="
1773     atomics_gcc
1774     atomics_suncc
1775     atomics_win32
1776 "
1777
1778 AUTODETECT_LIBS="
1779     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1780     $HWACCEL_AUTODETECT_LIBRARY_LIST
1781     $THREADS_LIST
1782 "
1783
1784 ARCH_LIST="
1785     aarch64
1786     alpha
1787     arm
1788     avr32
1789     avr32_ap
1790     avr32_uc
1791     bfin
1792     ia64
1793     m68k
1794     mips
1795     mips64
1796     parisc
1797     ppc
1798     ppc64
1799     s390
1800     sh4
1801     sparc
1802     sparc64
1803     tilegx
1804     tilepro
1805     tomi
1806     x86
1807     x86_32
1808     x86_64
1809 "
1810
1811 ARCH_EXT_LIST_ARM="
1812     armv5te
1813     armv6
1814     armv6t2
1815     armv8
1816     neon
1817     vfp
1818     vfpv3
1819     setend
1820 "
1821
1822 ARCH_EXT_LIST_MIPS="
1823     mipsfpu
1824     mips32r2
1825     mips32r5
1826     mips64r2
1827     mips32r6
1828     mips64r6
1829     mipsdsp
1830     mipsdspr2
1831     msa
1832 "
1833
1834 ARCH_EXT_LIST_LOONGSON="
1835     loongson2
1836     loongson3
1837     mmi
1838 "
1839
1840 ARCH_EXT_LIST_X86_SIMD="
1841     aesni
1842     amd3dnow
1843     amd3dnowext
1844     avx
1845     avx2
1846     fma3
1847     fma4
1848     mmx
1849     mmxext
1850     sse
1851     sse2
1852     sse3
1853     sse4
1854     sse42
1855     ssse3
1856     xop
1857 "
1858
1859 ARCH_EXT_LIST_PPC="
1860     altivec
1861     dcbzl
1862     ldbrx
1863     power8
1864     ppc4xx
1865     vsx
1866 "
1867
1868 ARCH_EXT_LIST_X86="
1869     $ARCH_EXT_LIST_X86_SIMD
1870     cpunop
1871     i686
1872 "
1873
1874 ARCH_EXT_LIST="
1875     $ARCH_EXT_LIST_ARM
1876     $ARCH_EXT_LIST_PPC
1877     $ARCH_EXT_LIST_X86
1878     $ARCH_EXT_LIST_MIPS
1879     $ARCH_EXT_LIST_LOONGSON
1880 "
1881
1882 ARCH_FEATURES="
1883     aligned_stack
1884     fast_64bit
1885     fast_clz
1886     fast_cmov
1887     local_aligned
1888     simd_align_16
1889     simd_align_32
1890 "
1891
1892 BUILTIN_LIST="
1893     atomic_cas_ptr
1894     machine_rw_barrier
1895     MemoryBarrier
1896     mm_empty
1897     rdtsc
1898     sarestart
1899     sem_timedwait
1900     sync_val_compare_and_swap
1901 "
1902 HAVE_LIST_CMDLINE="
1903     inline_asm
1904     symver
1905     x86asm
1906 "
1907
1908 HAVE_LIST_PUB="
1909     bigendian
1910     fast_unaligned
1911 "
1912
1913 HEADERS_LIST="
1914     arpa_inet_h
1915     asm_types_h
1916     cdio_paranoia_h
1917     cdio_paranoia_paranoia_h
1918     cuda_h
1919     dispatch_dispatch_h
1920     dev_bktr_ioctl_bt848_h
1921     dev_bktr_ioctl_meteor_h
1922     dev_ic_bt8xx_h
1923     dev_video_bktr_ioctl_bt848_h
1924     dev_video_meteor_ioctl_meteor_h
1925     direct_h
1926     dirent_h
1927     dxgidebug_h
1928     dxva_h
1929     ES2_gl_h
1930     gsm_h
1931     io_h
1932     machine_ioctl_bt848_h
1933     machine_ioctl_meteor_h
1934     malloc_h
1935     opencv2_core_core_c_h
1936     OpenGL_gl3_h
1937     poll_h
1938     sys_param_h
1939     sys_resource_h
1940     sys_select_h
1941     sys_soundcard_h
1942     sys_time_h
1943     sys_un_h
1944     sys_videoio_h
1945     termios_h
1946     udplite_h
1947     unistd_h
1948     valgrind_valgrind_h
1949     windows_h
1950     winsock2_h
1951 "
1952
1953 INTRINSICS_LIST="
1954     intrinsics_neon
1955 "
1956
1957 COMPLEX_FUNCS="
1958     cabs
1959     cexp
1960 "
1961
1962 MATH_FUNCS="
1963     atanf
1964     atan2f
1965     cbrt
1966     cbrtf
1967     copysign
1968     cosf
1969     erf
1970     exp2
1971     exp2f
1972     expf
1973     hypot
1974     isfinite
1975     isinf
1976     isnan
1977     ldexpf
1978     llrint
1979     llrintf
1980     log2
1981     log2f
1982     log10f
1983     lrint
1984     lrintf
1985     powf
1986     rint
1987     round
1988     roundf
1989     sinf
1990     trunc
1991     truncf
1992 "
1993
1994 SYSTEM_FEATURES="
1995     atomics_native
1996     dos_paths
1997     libc_msvcrt
1998     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1999     section_data_rel_ro
2000     threads
2001     uwp
2002     winrt
2003 "
2004
2005 SYSTEM_FUNCS="
2006     access
2007     aligned_malloc
2008     arc4random
2009     clock_gettime
2010     closesocket
2011     CommandLineToArgvW
2012     fcntl
2013     getaddrinfo
2014     gethrtime
2015     getopt
2016     GetProcessAffinityMask
2017     GetProcessMemoryInfo
2018     GetProcessTimes
2019     getrusage
2020     GetSystemTimeAsFileTime
2021     gettimeofday
2022     glob
2023     glXGetProcAddress
2024     gmtime_r
2025     inet_aton
2026     isatty
2027     kbhit
2028     localtime_r
2029     lstat
2030     lzo1x_999_compress
2031     mach_absolute_time
2032     MapViewOfFile
2033     memalign
2034     mkstemp
2035     mmap
2036     mprotect
2037     nanosleep
2038     PeekNamedPipe
2039     posix_memalign
2040     pthread_cancel
2041     sched_getaffinity
2042     SecItemImport
2043     SetConsoleTextAttribute
2044     SetConsoleCtrlHandler
2045     setmode
2046     setrlimit
2047     Sleep
2048     strerror_r
2049     sysconf
2050     sysctl
2051     usleep
2052     UTGetOSTypeFromString
2053     VirtualAlloc
2054     wglGetProcAddress
2055 "
2056
2057 SYSTEM_LIBRARIES="
2058     vaapi_drm
2059     vaapi_x11
2060     vdpau_x11
2061     wincrypt
2062 "
2063
2064 TOOLCHAIN_FEATURES="
2065     as_arch_directive
2066     as_fpu_directive
2067     as_func
2068     as_object_arch
2069     asm_mod_q
2070     blocks_extension
2071     ebp_available
2072     ebx_available
2073     gnu_as
2074     gnu_windres
2075     ibm_asm
2076     inline_asm_direct_symbol_refs
2077     inline_asm_labels
2078     inline_asm_nonlocal_labels
2079     pragma_deprecated
2080     rsync_contimeout
2081     symver_asm_label
2082     symver_gnu_asm
2083     vfp_args
2084     xform_asm
2085     xmm_clobbers
2086 "
2087
2088 TYPES_LIST="
2089     CONDITION_VARIABLE_Ptr
2090     kCMVideoCodecType_HEVC
2091     socklen_t
2092     struct_addrinfo
2093     struct_group_source_req
2094     struct_ip_mreq_source
2095     struct_ipv6_mreq
2096     struct_msghdr_msg_flags
2097     struct_pollfd
2098     struct_rusage_ru_maxrss
2099     struct_sctp_event_subscribe
2100     struct_sockaddr_in6
2101     struct_sockaddr_sa_len
2102     struct_sockaddr_storage
2103     struct_stat_st_mtim_tv_nsec
2104     struct_v4l2_frmivalenum_discrete
2105 "
2106
2107 HAVE_LIST="
2108     $ARCH_EXT_LIST
2109     $(add_suffix _external $ARCH_EXT_LIST)
2110     $(add_suffix _inline   $ARCH_EXT_LIST)
2111     $ARCH_FEATURES
2112     $ATOMICS_LIST
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
2374 mmx_external_deps="x86asm"
2375 mmx_inline_deps="inline_asm x86"
2376 mmx_suggest="mmx_external mmx_inline"
2377
2378 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2379     eval dep=\$${ext}_deps
2380     eval ${ext}_external_deps='"${dep}_external"'
2381     eval ${ext}_inline_deps='"${dep}_inline"'
2382     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2383 done
2384
2385 aligned_stack_if_any="aarch64 ppc x86"
2386 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2387 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2388 fast_unaligned_if_any="aarch64 ppc x86"
2389 simd_align_16_if_any="altivec neon sse"
2390 simd_align_32_if_any="avx"
2391
2392 # system capabilities
2393 symver_if_any="symver_asm_label symver_gnu_asm"
2394 valgrind_backtrace_conflict="optimizations"
2395 valgrind_backtrace_deps="valgrind_valgrind_h"
2396
2397 # threading support
2398 atomics_gcc_if="sync_val_compare_and_swap"
2399 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2400 atomics_win32_if="MemoryBarrier"
2401 atomics_native_if_any="$ATOMICS_LIST"
2402 w32threads_deps="atomics_native"
2403 threads_if_any="$THREADS_LIST"
2404
2405 # subsystems
2406 cbs_h264_select="cbs golomb"
2407 cbs_h265_select="cbs golomb"
2408 cbs_mpeg2_select="cbs"
2409 dct_select="rdft"
2410 dirac_parse_select="golomb"
2411 error_resilience_select="me_cmp"
2412 faandct_deps="faan"
2413 faandct_select="fdctdsp"
2414 faanidct_deps="faan"
2415 faanidct_select="idctdsp"
2416 h264dsp_select="startcode"
2417 hevcparse_select="golomb"
2418 frame_thread_encoder_deps="encoders threads"
2419 intrax8_select="blockdsp idctdsp"
2420 mdct_select="fft"
2421 mdct15_select="fft"
2422 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2423 mpeg_er_select="error_resilience"
2424 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2425 mpegaudiodsp_select="dct"
2426 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2427 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2428 vc1dsp_select="h264chroma qpeldsp startcode"
2429 rdft_select="fft"
2430
2431 # decoders / encoders
2432 aac_decoder_select="adts_header mdct15 mdct sinewin"
2433 aac_fixed_decoder_select="mdct sinewin"
2434 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2435 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2436 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2437 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2438 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2439 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2440 adpcm_g722_decoder_select="g722dsp"
2441 adpcm_g722_encoder_select="g722dsp"
2442 aic_decoder_select="golomb idctdsp"
2443 alac_encoder_select="lpc"
2444 als_decoder_select="bswapdsp"
2445 amrnb_decoder_select="lsp"
2446 amrwb_decoder_select="lsp"
2447 amv_decoder_select="sp5x_decoder exif"
2448 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2449 ape_decoder_select="bswapdsp llauddsp"
2450 apng_decoder_deps="zlib"
2451 apng_encoder_deps="zlib"
2452 apng_encoder_select="llvidencdsp"
2453 aptx_decoder_select="audio_frame_queue"
2454 aptx_encoder_select="audio_frame_queue"
2455 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2456 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2457 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2458 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2459 atrac1_decoder_select="mdct sinewin"
2460 atrac3_decoder_select="mdct"
2461 atrac3p_decoder_select="mdct sinewin"
2462 avrn_decoder_select="exif jpegtables"
2463 bink_decoder_select="blockdsp hpeldsp"
2464 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2465 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2466 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2467 clearvideo_decoder_select="idctdsp"
2468 cllc_decoder_select="bswapdsp"
2469 comfortnoise_encoder_select="lpc"
2470 cook_decoder_select="audiodsp mdct sinewin"
2471 cscd_decoder_select="lzo"
2472 cscd_decoder_suggest="zlib"
2473 dca_decoder_select="mdct"
2474 dds_decoder_select="texturedsp"
2475 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2476 dnxhd_decoder_select="blockdsp idctdsp"
2477 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2478 dolby_e_decoder_select="mdct"
2479 dvvideo_decoder_select="dvprofile idctdsp"
2480 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2481 dxa_decoder_deps="zlib"
2482 dxv_decoder_select="lzf texturedsp"
2483 eac3_decoder_select="ac3_decoder"
2484 eac3_encoder_select="ac3_encoder"
2485 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2486 eatgq_decoder_select="aandcttables"
2487 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2488 exr_decoder_deps="zlib"
2489 ffv1_decoder_select="rangecoder"
2490 ffv1_encoder_select="rangecoder"
2491 ffvhuff_decoder_select="huffyuv_decoder"
2492 ffvhuff_encoder_select="huffyuv_encoder"
2493 fic_decoder_select="golomb"
2494 flac_decoder_select="flacdsp"
2495 flac_encoder_select="bswapdsp flacdsp lpc"
2496 flashsv2_decoder_deps="zlib"
2497 flashsv2_encoder_deps="zlib"
2498 flashsv_decoder_deps="zlib"
2499 flashsv_encoder_deps="zlib"
2500 flv_decoder_select="h263_decoder"
2501 flv_encoder_select="h263_encoder"
2502 fourxm_decoder_select="blockdsp bswapdsp"
2503 fraps_decoder_select="bswapdsp huffman"
2504 g2m_decoder_deps="zlib"
2505 g2m_decoder_select="blockdsp idctdsp jpegtables"
2506 g729_decoder_select="audiodsp"
2507 h261_decoder_select="mpegvideo"
2508 h261_encoder_select="aandcttables mpegvideoenc"
2509 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2510 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2511 h263i_decoder_select="h263_decoder"
2512 h263p_decoder_select="h263_decoder"
2513 h263p_encoder_select="h263_encoder"
2514 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2515 h264_decoder_suggest="error_resilience"
2516 hap_decoder_select="snappy texturedsp"
2517 hap_encoder_deps="libsnappy"
2518 hap_encoder_select="texturedspenc"
2519 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2520 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2521 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2522 iac_decoder_select="imc_decoder"
2523 imc_decoder_select="bswapdsp fft mdct sinewin"
2524 indeo3_decoder_select="hpeldsp"
2525 indeo4_decoder_select="ividsp"
2526 indeo5_decoder_select="ividsp"
2527 interplay_video_decoder_select="hpeldsp"
2528 jpegls_decoder_select="mjpeg_decoder"
2529 jv_decoder_select="blockdsp"
2530 lagarith_decoder_select="llviddsp"
2531 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2532 magicyuv_decoder_select="llviddsp"
2533 magicyuv_encoder_select="llvidencdsp"
2534 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2535 metasound_decoder_select="lsp mdct sinewin"
2536 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2537 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2538 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2539 mjpegb_decoder_select="mjpeg_decoder"
2540 mlp_decoder_select="mlp_parser"
2541 mlp_encoder_select="lpc"
2542 motionpixels_decoder_select="bswapdsp"
2543 mp1_decoder_select="mpegaudio"
2544 mp1float_decoder_select="mpegaudio"
2545 mp2_decoder_select="mpegaudio"
2546 mp2float_decoder_select="mpegaudio"
2547 mp3_decoder_select="mpegaudio"
2548 mp3adu_decoder_select="mpegaudio"
2549 mp3adufloat_decoder_select="mpegaudio"
2550 mp3float_decoder_select="mpegaudio"
2551 mp3on4_decoder_select="mpegaudio"
2552 mp3on4float_decoder_select="mpegaudio"
2553 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2554 mpc8_decoder_select="mpegaudiodsp"
2555 mpegvideo_decoder_select="mpegvideo"
2556 mpeg1video_decoder_select="mpegvideo"
2557 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2558 mpeg2video_decoder_select="mpegvideo"
2559 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2560 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2561 mpeg4_encoder_select="h263_encoder"
2562 msa1_decoder_select="mss34dsp"
2563 mscc_decoder_deps="zlib"
2564 msmpeg4v1_decoder_select="h263_decoder"
2565 msmpeg4v2_decoder_select="h263_decoder"
2566 msmpeg4v2_encoder_select="h263_encoder"
2567 msmpeg4v3_decoder_select="h263_decoder"
2568 msmpeg4v3_encoder_select="h263_encoder"
2569 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2570 mts2_decoder_select="mss34dsp"
2571 mxpeg_decoder_select="mjpeg_decoder"
2572 nellymoser_decoder_select="mdct sinewin"
2573 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2574 nuv_decoder_select="idctdsp lzo"
2575 on2avc_decoder_select="mdct"
2576 opus_decoder_deps="swresample"
2577 opus_decoder_select="mdct15"
2578 opus_encoder_select="audio_frame_queue mdct15"
2579 png_decoder_deps="zlib"
2580 png_encoder_deps="zlib"
2581 png_encoder_select="llvidencdsp"
2582 prores_decoder_select="blockdsp idctdsp"
2583 prores_encoder_select="fdctdsp"
2584 qcelp_decoder_select="lsp"
2585 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2586 ra_144_decoder_select="audiodsp"
2587 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2588 ralf_decoder_select="golomb"
2589 rawvideo_decoder_select="bswapdsp"
2590 rscc_decoder_deps="zlib"
2591 rtjpeg_decoder_select="me_cmp"
2592 rv10_decoder_select="h263_decoder"
2593 rv10_encoder_select="h263_encoder"
2594 rv20_decoder_select="h263_decoder"
2595 rv20_encoder_select="h263_encoder"
2596 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2597 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2598 screenpresso_decoder_deps="zlib"
2599 shorten_decoder_select="bswapdsp"
2600 sipr_decoder_select="lsp"
2601 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2602 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2603 sonic_decoder_select="golomb rangecoder"
2604 sonic_encoder_select="golomb rangecoder"
2605 sonic_ls_encoder_select="golomb rangecoder"
2606 sp5x_decoder_select="mjpeg_decoder"
2607 srgc_decoder_deps="zlib"
2608 svq1_decoder_select="hpeldsp"
2609 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2610 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2611 svq3_decoder_suggest="zlib"
2612 tak_decoder_select="audiodsp"
2613 tdsc_decoder_deps="zlib"
2614 tdsc_decoder_select="mjpeg_decoder"
2615 theora_decoder_select="vp3_decoder"
2616 thp_decoder_select="mjpeg_decoder"
2617 tiff_decoder_suggest="zlib lzma"
2618 tiff_encoder_suggest="zlib"
2619 truehd_decoder_select="mlp_parser"
2620 truehd_encoder_select="lpc"
2621 truemotion2_decoder_select="bswapdsp"
2622 truespeech_decoder_select="bswapdsp"
2623 tscc_decoder_deps="zlib"
2624 twinvq_decoder_select="mdct lsp sinewin"
2625 txd_decoder_select="texturedsp"
2626 utvideo_decoder_select="bswapdsp llviddsp"
2627 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2628 vble_decoder_select="llviddsp"
2629 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2630 vc1image_decoder_select="vc1_decoder"
2631 vorbis_decoder_select="mdct"
2632 vorbis_encoder_select="mdct"
2633 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2634 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2635 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2636 vp6a_decoder_select="vp6_decoder"
2637 vp6f_decoder_select="vp6_decoder"
2638 vp7_decoder_select="h264pred videodsp vp8dsp"
2639 vp8_decoder_select="h264pred videodsp vp8dsp"
2640 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2641 webp_decoder_select="vp8_decoder exif"
2642 wmalossless_decoder_select="llauddsp"
2643 wmapro_decoder_select="mdct sinewin wma_freqs"
2644 wmav1_decoder_select="mdct sinewin wma_freqs"
2645 wmav1_encoder_select="mdct sinewin wma_freqs"
2646 wmav2_decoder_select="mdct sinewin wma_freqs"
2647 wmav2_encoder_select="mdct sinewin wma_freqs"
2648 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2649 wmv1_decoder_select="h263_decoder"
2650 wmv1_encoder_select="h263_encoder"
2651 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2652 wmv2_encoder_select="h263_encoder wmv2dsp"
2653 wmv3_decoder_select="vc1_decoder"
2654 wmv3image_decoder_select="wmv3_decoder"
2655 xma1_decoder_select="wmapro_decoder"
2656 xma2_decoder_select="wmapro_decoder"
2657 zerocodec_decoder_deps="zlib"
2658 zlib_decoder_deps="zlib"
2659 zlib_encoder_deps="zlib"
2660 zmbv_decoder_deps="zlib"
2661 zmbv_encoder_deps="zlib"
2662
2663 # hardware accelerators
2664 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2665 cuda_deps_any="libdl LoadLibrary"
2666 cuvid_deps="cuda"
2667 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2668 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2669 nvdec_deps="cuda"
2670 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2671 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2672 xvmc_deps="X11_extensions_XvMClib_h"
2673
2674 h263_vaapi_hwaccel_deps="vaapi"
2675 h263_vaapi_hwaccel_select="h263_decoder"
2676 h263_videotoolbox_hwaccel_deps="videotoolbox"
2677 h263_videotoolbox_hwaccel_select="h263_decoder"
2678 h264_d3d11va_hwaccel_deps="d3d11va"
2679 h264_d3d11va_hwaccel_select="h264_decoder"
2680 h264_d3d11va2_hwaccel_deps="d3d11va"
2681 h264_d3d11va2_hwaccel_select="h264_decoder"
2682 h264_dxva2_hwaccel_deps="dxva2"
2683 h264_dxva2_hwaccel_select="h264_decoder"
2684 h264_nvdec_hwaccel_deps="nvdec"
2685 h264_nvdec_hwaccel_select="h264_decoder"
2686 h264_vaapi_hwaccel_deps="vaapi"
2687 h264_vaapi_hwaccel_select="h264_decoder"
2688 h264_vdpau_hwaccel_deps="vdpau"
2689 h264_vdpau_hwaccel_select="h264_decoder"
2690 h264_videotoolbox_hwaccel_deps="videotoolbox"
2691 h264_videotoolbox_hwaccel_select="h264_decoder"
2692 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2693 hevc_d3d11va_hwaccel_select="hevc_decoder"
2694 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2695 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2696 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2697 hevc_dxva2_hwaccel_select="hevc_decoder"
2698 hevc_nvdec_hwaccel_deps="nvdec"
2699 hevc_nvdec_hwaccel_select="hevc_decoder"
2700 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2701 hevc_vaapi_hwaccel_select="hevc_decoder"
2702 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2703 hevc_vdpau_hwaccel_select="hevc_decoder"
2704 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2705 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2706 mpeg_xvmc_hwaccel_deps="xvmc"
2707 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2708 mpeg1_nvdec_hwaccel_deps="nvdec"
2709 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2710 mpeg1_vdpau_hwaccel_deps="vdpau"
2711 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2713 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_xvmc_hwaccel_deps="xvmc"
2715 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2716 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2719 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_dxva2_hwaccel_deps="dxva2"
2721 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_nvdec_hwaccel_deps="nvdec"
2723 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_vaapi_hwaccel_deps="vaapi"
2725 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_vdpau_hwaccel_deps="vdpau"
2727 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2729 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_xvmc_hwaccel_deps="xvmc"
2731 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2732 mpeg4_nvdec_hwaccel_deps="nvdec"
2733 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2734 mpeg4_vaapi_hwaccel_deps="vaapi"
2735 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2736 mpeg4_vdpau_hwaccel_deps="vdpau"
2737 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2738 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2739 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2740 vc1_d3d11va_hwaccel_deps="d3d11va"
2741 vc1_d3d11va_hwaccel_select="vc1_decoder"
2742 vc1_d3d11va2_hwaccel_deps="d3d11va"
2743 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2744 vc1_dxva2_hwaccel_deps="dxva2"
2745 vc1_dxva2_hwaccel_select="vc1_decoder"
2746 vc1_nvdec_hwaccel_deps="nvdec"
2747 vc1_nvdec_hwaccel_select="vc1_decoder"
2748 vc1_vaapi_hwaccel_deps="vaapi"
2749 vc1_vaapi_hwaccel_select="vc1_decoder"
2750 vc1_vdpau_hwaccel_deps="vdpau"
2751 vc1_vdpau_hwaccel_select="vc1_decoder"
2752 vp8_nvdec_hwaccel_deps="nvdec"
2753 vp8_nvdec_hwaccel_select="vp8_decoder"
2754 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2755 vp8_vaapi_hwaccel_select="vp8_decoder"
2756 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2757 vp9_d3d11va_hwaccel_select="vp9_decoder"
2758 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2759 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2760 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2761 vp9_dxva2_hwaccel_select="vp9_decoder"
2762 vp9_nvdec_hwaccel_deps="nvdec"
2763 vp9_nvdec_hwaccel_select="vp9_decoder"
2764 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2765 vp9_vaapi_hwaccel_select="vp9_decoder"
2766 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2767 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2768 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2769 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2770 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2771 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2772
2773 # hardware-accelerated codecs
2774 omx_deps="libdl pthreads"
2775 omx_rpi_select="omx"
2776 qsv_deps="libmfx"
2777 qsvdec_select="qsv"
2778 qsvenc_select="qsv"
2779 qsvvpp_select="qsv"
2780 vaapi_encode_deps="vaapi"
2781 v4l2_m2m_deps_any="linux_videodev2_h"
2782
2783 hwupload_cuda_filter_deps="cuda"
2784 scale_npp_filter_deps="cuda libnpp"
2785 scale_cuda_filter_deps="cuda_sdk"
2786 thumbnail_cuda_filter_deps="cuda_sdk"
2787
2788 amf_deps_any="libdl LoadLibrary"
2789 nvenc_deps="cuda"
2790 nvenc_deps_any="libdl LoadLibrary"
2791 nvenc_encoder_deps="nvenc"
2792
2793 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2795 h264_amf_encoder_deps="amf"
2796 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2797 h264_cuvid_decoder_deps="cuvid"
2798 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2799 h264_mediacodec_decoder_deps="mediacodec"
2800 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2801 h264_mmal_decoder_deps="mmal"
2802 h264_nvenc_encoder_deps="nvenc"
2803 h264_omx_encoder_deps="omx"
2804 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2805 h264_qsv_encoder_select="qsvenc"
2806 h264_rkmpp_decoder_deps="rkmpp"
2807 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2808 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2809 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2810 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2811 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2812 hevc_amf_encoder_deps="amf"
2813 hevc_cuvid_decoder_deps="cuvid"
2814 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2815 hevc_mediacodec_decoder_deps="mediacodec"
2816 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2817 hevc_nvenc_encoder_deps="nvenc"
2818 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2819 hevc_qsv_encoder_select="hevcparse qsvenc"
2820 hevc_rkmpp_decoder_deps="rkmpp"
2821 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2822 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2823 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2824 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2825 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2826 mjpeg_cuvid_decoder_deps="cuvid"
2827 mjpeg_qsv_encoder_deps="libmfx"
2828 mjpeg_qsv_encoder_select="qsvenc"
2829 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2830 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2831 mpeg1_cuvid_decoder_deps="cuvid"
2832 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2833 mpeg2_crystalhd_decoder_select="crystalhd"
2834 mpeg2_cuvid_decoder_deps="cuvid"
2835 mpeg2_mmal_decoder_deps="mmal"
2836 mpeg2_mediacodec_decoder_deps="mediacodec"
2837 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2838 mpeg2_qsv_encoder_select="qsvenc"
2839 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2840 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2841 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2842 mpeg4_crystalhd_decoder_select="crystalhd"
2843 mpeg4_cuvid_decoder_deps="cuvid"
2844 mpeg4_mediacodec_decoder_deps="mediacodec"
2845 mpeg4_mmal_decoder_deps="mmal"
2846 mpeg4_omx_encoder_deps="omx"
2847 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2848 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2849 msmpeg4_crystalhd_decoder_select="crystalhd"
2850 nvenc_h264_encoder_select="h264_nvenc_encoder"
2851 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2852 vc1_crystalhd_decoder_select="crystalhd"
2853 vc1_cuvid_decoder_deps="cuvid"
2854 vc1_mmal_decoder_deps="mmal"
2855 vc1_qsv_decoder_select="qsvdec vc1_parser"
2856 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2857 vp8_cuvid_decoder_deps="cuvid"
2858 vp8_mediacodec_decoder_deps="mediacodec"
2859 vp8_qsv_decoder_select="qsvdec vp8_parser"
2860 vp8_rkmpp_decoder_deps="rkmpp"
2861 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2862 vp8_vaapi_encoder_select="vaapi_encode"
2863 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2864 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2865 vp9_cuvid_decoder_deps="cuvid"
2866 vp9_mediacodec_decoder_deps="mediacodec"
2867 vp9_rkmpp_decoder_deps="rkmpp"
2868 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2869 vp9_vaapi_encoder_select="vaapi_encode"
2870 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2871 wmv3_crystalhd_decoder_select="crystalhd"
2872
2873 # parsers
2874 aac_parser_select="adts_header"
2875 h264_parser_select="golomb h264dsp h264parse"
2876 hevc_parser_select="hevcparse"
2877 mpegaudio_parser_select="mpegaudioheader"
2878 mpegvideo_parser_select="mpegvideo"
2879 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2880 vc1_parser_select="vc1dsp"
2881
2882 # bitstream_filters
2883 aac_adtstoasc_bsf_select="adts_header"
2884 h264_metadata_bsf_select="cbs_h264"
2885 h264_redundant_pps_bsf_select="cbs_h264"
2886 hevc_metadata_bsf_select="cbs_h265"
2887 mjpeg2jpeg_bsf_select="jpegtables"
2888 mpeg2_metadata_bsf_select="cbs_mpeg2"
2889 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2890
2891 # external libraries
2892 aac_at_decoder_deps="audiotoolbox"
2893 ac3_at_decoder_deps="audiotoolbox"
2894 ac3_at_decoder_select="ac3_parser"
2895 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2896 alac_at_decoder_deps="audiotoolbox"
2897 amr_nb_at_decoder_deps="audiotoolbox"
2898 avisynth_deps_any="libdl LoadLibrary"
2899 avisynth_demuxer_deps="avisynth"
2900 avisynth_demuxer_select="riffdec"
2901 eac3_at_decoder_deps="audiotoolbox"
2902 eac3_at_decoder_select="ac3_parser"
2903 gsm_ms_at_decoder_deps="audiotoolbox"
2904 ilbc_at_decoder_deps="audiotoolbox"
2905 mp1_at_decoder_deps="audiotoolbox"
2906 mp2_at_decoder_deps="audiotoolbox"
2907 mp3_at_decoder_deps="audiotoolbox"
2908 mp1_at_decoder_select="mpegaudioheader"
2909 mp2_at_decoder_select="mpegaudioheader"
2910 mp3_at_decoder_select="mpegaudioheader"
2911 pcm_alaw_at_decoder_deps="audiotoolbox"
2912 pcm_mulaw_at_decoder_deps="audiotoolbox"
2913 qdmc_at_decoder_deps="audiotoolbox"
2914 qdm2_at_decoder_deps="audiotoolbox"
2915 aac_at_encoder_deps="audiotoolbox"
2916 aac_at_encoder_select="audio_frame_queue"
2917 alac_at_encoder_deps="audiotoolbox"
2918 alac_at_encoder_select="audio_frame_queue"
2919 ilbc_at_encoder_deps="audiotoolbox"
2920 ilbc_at_encoder_select="audio_frame_queue"
2921 pcm_alaw_at_encoder_deps="audiotoolbox"
2922 pcm_alaw_at_encoder_select="audio_frame_queue"
2923 pcm_mulaw_at_encoder_deps="audiotoolbox"
2924 pcm_mulaw_at_encoder_select="audio_frame_queue"
2925 chromaprint_muxer_deps="chromaprint"
2926 h264_videotoolbox_encoder_deps="pthreads"
2927 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2928 hevc_videotoolbox_encoder_deps="pthreads"
2929 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2930 libcelt_decoder_deps="libcelt"
2931 libfdk_aac_decoder_deps="libfdk_aac"
2932 libfdk_aac_encoder_deps="libfdk_aac"
2933 libfdk_aac_encoder_select="audio_frame_queue"
2934 libgme_demuxer_deps="libgme"
2935 libgsm_decoder_deps="libgsm"
2936 libgsm_encoder_deps="libgsm"
2937 libgsm_ms_decoder_deps="libgsm"
2938 libgsm_ms_encoder_deps="libgsm"
2939 libilbc_decoder_deps="libilbc"
2940 libilbc_encoder_deps="libilbc"
2941 libkvazaar_encoder_deps="libkvazaar"
2942 libmodplug_demuxer_deps="libmodplug"
2943 libmp3lame_encoder_deps="libmp3lame"
2944 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2945 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2946 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2947 libopencore_amrnb_encoder_select="audio_frame_queue"
2948 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2949 libopenh264_decoder_deps="libopenh264"
2950 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2951 libopenh264_encoder_deps="libopenh264"
2952 libopenjpeg_decoder_deps="libopenjpeg"
2953 libopenjpeg_encoder_deps="libopenjpeg"
2954 libopenmpt_demuxer_deps="libopenmpt"
2955 libopus_decoder_deps="libopus"
2956 libopus_encoder_deps="libopus"
2957 libopus_encoder_select="audio_frame_queue"
2958 librsvg_decoder_deps="librsvg"
2959 libshine_encoder_deps="libshine"
2960 libshine_encoder_select="audio_frame_queue"
2961 libspeex_decoder_deps="libspeex"
2962 libspeex_encoder_deps="libspeex"
2963 libspeex_encoder_select="audio_frame_queue"
2964 libtheora_encoder_deps="libtheora"
2965 libtwolame_encoder_deps="libtwolame"
2966 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2967 libvorbis_decoder_deps="libvorbis"
2968 libvorbis_encoder_deps="libvorbis libvorbisenc"
2969 libvorbis_encoder_select="audio_frame_queue"
2970 libvpx_vp8_decoder_deps="libvpx"
2971 libvpx_vp8_encoder_deps="libvpx"
2972 libvpx_vp9_decoder_deps="libvpx"
2973 libvpx_vp9_encoder_deps="libvpx"
2974 libwavpack_encoder_deps="libwavpack"
2975 libwavpack_encoder_select="audio_frame_queue"
2976 libwebp_encoder_deps="libwebp"
2977 libwebp_anim_encoder_deps="libwebp"
2978 libx262_encoder_deps="libx262"
2979 libx264_encoder_deps="libx264"
2980 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2981 libx264rgb_encoder_select="libx264_encoder"
2982 libx265_encoder_deps="libx265"
2983 libxavs_encoder_deps="libxavs"
2984 libxvid_encoder_deps="libxvid"
2985 libzvbi_teletext_decoder_deps="libzvbi"
2986 videotoolbox_suggest="coreservices"
2987 videotoolbox_deps="corefoundation coremedia corevideo"
2988 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2989
2990 # demuxers / muxers
2991 ac3_demuxer_select="ac3_parser"
2992 aiff_muxer_select="iso_media"
2993 asf_demuxer_select="riffdec"
2994 asf_o_demuxer_select="riffdec"
2995 asf_muxer_select="riffenc"
2996 asf_stream_muxer_select="asf_muxer"
2997 avi_demuxer_select="iso_media riffdec exif"
2998 avi_muxer_select="riffenc"
2999 caf_demuxer_select="iso_media riffdec"
3000 caf_muxer_select="iso_media"
3001 dash_muxer_select="mp4_muxer"
3002 dash_demuxer_deps="libxml2"
3003 dirac_demuxer_select="dirac_parser"
3004 dts_demuxer_select="dca_parser"
3005 dtshd_demuxer_select="dca_parser"
3006 dv_demuxer_select="dvprofile"
3007 dv_muxer_select="dvprofile"
3008 dxa_demuxer_select="riffdec"
3009 eac3_demuxer_select="ac3_parser"
3010 f4v_muxer_select="mov_muxer"
3011 fifo_muxer_deps="threads"
3012 flac_demuxer_select="flac_parser"
3013 hds_muxer_select="flv_muxer"
3014 hls_muxer_select="mpegts_muxer"
3015 hls_muxer_suggest="gcrypt openssl"
3016 image2_alias_pix_demuxer_select="image2_demuxer"
3017 image2_brender_pix_demuxer_select="image2_demuxer"
3018 ipod_muxer_select="mov_muxer"
3019 ismv_muxer_select="mov_muxer"
3020 matroska_audio_muxer_select="matroska_muxer"
3021 matroska_demuxer_select="iso_media riffdec"
3022 matroska_demuxer_suggest="bzlib lzo zlib"
3023 matroska_muxer_select="iso_media riffenc"
3024 mmf_muxer_select="riffenc"
3025 mov_demuxer_select="iso_media riffdec"
3026 mov_demuxer_suggest="zlib"
3027 mov_muxer_select="iso_media riffenc rtpenc_chain"
3028 mp3_demuxer_select="mpegaudio_parser"
3029 mp3_muxer_select="mpegaudioheader"
3030 mp4_muxer_select="mov_muxer"
3031 mpegts_demuxer_select="iso_media"
3032 mpegts_muxer_select="adts_muxer latm_muxer"
3033 mpegtsraw_demuxer_select="mpegts_demuxer"
3034 mxf_d10_muxer_select="mxf_muxer"
3035 mxf_opatom_muxer_select="mxf_muxer"
3036 nut_muxer_select="riffenc"
3037 nuv_demuxer_select="riffdec"
3038 oga_muxer_select="ogg_muxer"
3039 ogg_demuxer_select="dirac_parse"
3040 ogv_muxer_select="ogg_muxer"
3041 opus_muxer_select="ogg_muxer"
3042 psp_muxer_select="mov_muxer"
3043 rtp_demuxer_select="sdp_demuxer"
3044 rtp_muxer_select="golomb"
3045 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3046 rtsp_demuxer_select="http_protocol rtpdec"
3047 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3048 sap_demuxer_select="sdp_demuxer"
3049 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3050 sdp_demuxer_select="rtpdec"
3051 smoothstreaming_muxer_select="ismv_muxer"
3052 spdif_demuxer_select="adts_header"
3053 spdif_muxer_select="adts_header"
3054 spx_muxer_select="ogg_muxer"
3055 swf_demuxer_suggest="zlib"
3056 tak_demuxer_select="tak_parser"
3057 tg2_muxer_select="mov_muxer"
3058 tgp_muxer_select="mov_muxer"
3059 vobsub_demuxer_select="mpegps_demuxer"
3060 w64_demuxer_select="wav_demuxer"
3061 w64_muxer_select="wav_muxer"
3062 wav_demuxer_select="riffdec"
3063 wav_muxer_select="riffenc"
3064 webm_muxer_select="iso_media riffenc"
3065 webm_dash_manifest_demuxer_select="matroska_demuxer"
3066 wtv_demuxer_select="mpegts_demuxer riffdec"
3067 wtv_muxer_select="mpegts_muxer riffenc"
3068 xmv_demuxer_select="riffdec"
3069 xwma_demuxer_select="riffdec"
3070
3071 # indevs / outdevs
3072 alsa_indev_deps="alsa"
3073 alsa_outdev_deps="alsa"
3074 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3075 avfoundation_indev_suggest="coregraphics applicationservices"
3076 avfoundation_indev_extralibs="-framework Foundation"
3077 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3078 caca_outdev_deps="libcaca"
3079 decklink_deps_any="libdl LoadLibrary"
3080 decklink_indev_deps="decklink threads"
3081 decklink_indev_extralibs="-lstdc++"
3082 decklink_outdev_deps="decklink threads"
3083 decklink_outdev_extralibs="-lstdc++"
3084 libndi_newtek_indev_deps="libndi_newtek"
3085 libndi_newtek_indev_extralibs="-lndi"
3086 libndi_newtek_outdev_deps="libndi_newtek"
3087 libndi_newtek_outdev_extralibs="-lndi"
3088 dshow_indev_deps="IBaseFilter"
3089 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3090 fbdev_indev_deps="linux_fb_h"
3091 fbdev_outdev_deps="linux_fb_h"
3092 gdigrab_indev_deps="CreateDIBSection"
3093 gdigrab_indev_extralibs="-lgdi32"
3094 gdigrab_indev_select="bmp_decoder"
3095 iec61883_indev_deps="libiec61883"
3096 jack_indev_deps="libjack"
3097 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3098 kmsgrab_indev_deps="libdrm"
3099 lavfi_indev_deps="avfilter"
3100 libcdio_indev_deps="libcdio"
3101 libdc1394_indev_deps="libdc1394"
3102 openal_indev_deps="openal"
3103 opengl_outdev_deps="opengl"
3104 oss_indev_deps_any="sys_soundcard_h"
3105 oss_outdev_deps_any="sys_soundcard_h"
3106 pulse_indev_deps="libpulse"
3107 pulse_outdev_deps="libpulse"
3108 sdl2_outdev_deps="sdl2"
3109 sndio_indev_deps="sndio"
3110 sndio_outdev_deps="sndio"
3111 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3112 v4l2_indev_suggest="libv4l2"
3113 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3114 v4l2_outdev_suggest="libv4l2"
3115 vfwcap_indev_deps="vfw32 vfwcap_defines"
3116 xcbgrab_indev_deps="libxcb"
3117 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3118 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3119 xv_outdev_extralibs="-lXv -lX11 -lXext"
3120
3121 # protocols
3122 async_protocol_deps="threads"
3123 bluray_protocol_deps="libbluray"
3124 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3125 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3126 ffrtmpcrypt_protocol_select="tcp_protocol"
3127 ffrtmphttp_protocol_conflict="librtmp_protocol"
3128 ffrtmphttp_protocol_select="http_protocol"
3129 ftp_protocol_select="tcp_protocol"
3130 gopher_protocol_select="network"
3131 http_protocol_select="tcp_protocol"
3132 http_protocol_suggest="zlib"
3133 httpproxy_protocol_select="tcp_protocol"
3134 httpproxy_protocol_suggest="zlib"
3135 https_protocol_select="tls_protocol"
3136 https_protocol_suggest="zlib"
3137 icecast_protocol_select="http_protocol"
3138 librtmp_protocol_deps="librtmp"
3139 librtmpe_protocol_deps="librtmp"
3140 librtmps_protocol_deps="librtmp"
3141 librtmpt_protocol_deps="librtmp"
3142 librtmpte_protocol_deps="librtmp"
3143 libsmbclient_protocol_deps="libsmbclient gplv3"
3144 libssh_protocol_deps="libssh"
3145 mmsh_protocol_select="http_protocol"
3146 mmst_protocol_select="network"
3147 rtmp_protocol_conflict="librtmp_protocol"
3148 rtmp_protocol_select="tcp_protocol"
3149 rtmp_protocol_suggest="zlib"
3150 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3151 rtmpe_protocol_suggest="zlib"
3152 rtmps_protocol_conflict="librtmp_protocol"
3153 rtmps_protocol_select="tls_protocol"
3154 rtmps_protocol_suggest="zlib"
3155 rtmpt_protocol_select="ffrtmphttp_protocol"
3156 rtmpt_protocol_suggest="zlib"
3157 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3158 rtmpte_protocol_suggest="zlib"
3159 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3160 rtmpts_protocol_suggest="zlib"
3161 rtp_protocol_select="udp_protocol"
3162 schannel_conflict="openssl gnutls"
3163 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3164 sctp_protocol_select="network"
3165 securetransport_conflict="openssl gnutls"
3166 srtp_protocol_select="rtp_protocol srtp"
3167 tcp_protocol_select="network"
3168 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3169 tls_protocol_select="tcp_protocol"
3170 udp_protocol_select="network"
3171 udplite_protocol_select="network"
3172 unix_protocol_deps="sys_un_h"
3173 unix_protocol_select="network"
3174
3175 # filters
3176 afftfilt_filter_deps="avcodec"
3177 afftfilt_filter_select="fft"
3178 afir_filter_deps="avcodec"
3179 afir_filter_select="fft"
3180 amovie_filter_deps="avcodec avformat"
3181 aresample_filter_deps="swresample"
3182 ass_filter_deps="libass"
3183 atempo_filter_deps="avcodec"
3184 atempo_filter_select="rdft"
3185 azmq_filter_deps="libzmq"
3186 blackframe_filter_deps="gpl"
3187 boxblur_filter_deps="gpl"
3188 bs2b_filter_deps="libbs2b"
3189 colormatrix_filter_deps="gpl"
3190 coreimage_filter_deps="coreimage appkit"
3191 coreimage_filter_extralibs="-framework OpenGL"
3192 coreimagesrc_filter_deps="coreimage appkit"
3193 coreimagesrc_filter_extralibs="-framework OpenGL"
3194 cover_rect_filter_deps="avcodec avformat gpl"
3195 cropdetect_filter_deps="gpl"
3196 deinterlace_qsv_filter_deps="libmfx"
3197 deinterlace_vaapi_filter_deps="vaapi"
3198 delogo_filter_deps="gpl"
3199 deshake_filter_select="pixelutils"
3200 drawtext_filter_deps="libfreetype"
3201 drawtext_filter_suggest="libfontconfig libfribidi"
3202 elbg_filter_deps="avcodec"
3203 eq_filter_deps="gpl"
3204 fftfilt_filter_deps="avcodec"
3205 fftfilt_filter_select="rdft"
3206 find_rect_filter_deps="avcodec avformat gpl"
3207 firequalizer_filter_deps="avcodec"
3208 firequalizer_filter_select="rdft"
3209 flite_filter_deps="libflite"
3210 framerate_filter_select="pixelutils"
3211 frei0r_filter_deps="frei0r libdl"
3212 frei0r_src_filter_deps="frei0r libdl"
3213 fspp_filter_deps="gpl"
3214 geq_filter_deps="gpl"
3215 histeq_filter_deps="gpl"
3216 hqdn3d_filter_deps="gpl"
3217 interlace_filter_deps="gpl"
3218 kerndeint_filter_deps="gpl"
3219 ladspa_filter_deps="ladspa libdl"
3220 lv2_filter_deps="lv2"
3221 mcdeint_filter_deps="avcodec gpl"
3222 movie_filter_deps="avcodec avformat"
3223 mpdecimate_filter_deps="gpl"
3224 mpdecimate_filter_select="pixelutils"
3225 mptestsrc_filter_deps="gpl"
3226 negate_filter_deps="lut_filter"
3227 nnedi_filter_deps="gpl"
3228 ocr_filter_deps="libtesseract"
3229 ocv_filter_deps="libopencv"
3230 overlay_opencl_filter_deps="opencl"
3231 overlay_qsv_filter_deps="libmfx"
3232 overlay_qsv_filter_select="qsvvpp"
3233 owdenoise_filter_deps="gpl"
3234 pan_filter_deps="swresample"
3235 perspective_filter_deps="gpl"
3236 phase_filter_deps="gpl"
3237 pp7_filter_deps="gpl"
3238 pp_filter_deps="gpl postproc"
3239 pullup_filter_deps="gpl"
3240 removelogo_filter_deps="avcodec avformat swscale"
3241 repeatfields_filter_deps="gpl"
3242 resample_filter_deps="avresample"
3243 rubberband_filter_deps="librubberband"
3244 sab_filter_deps="gpl swscale"
3245 scale2ref_filter_deps="swscale"
3246 scale_filter_deps="swscale"
3247 scale_qsv_filter_deps="libmfx"
3248 select_filter_select="pixelutils"
3249 showcqt_filter_deps="avcodec avformat swscale"
3250 showcqt_filter_suggest="libfontconfig libfreetype"
3251 showcqt_filter_select="fft"
3252 showfreqs_filter_deps="avcodec"
3253 showfreqs_filter_select="fft"
3254 showspectrum_filter_deps="avcodec"
3255 showspectrum_filter_select="fft"
3256 showspectrumpic_filter_deps="avcodec"
3257 showspectrumpic_filter_select="fft"
3258 signature_filter_deps="gpl avcodec avformat"
3259 smartblur_filter_deps="gpl swscale"
3260 sofalizer_filter_deps="libmysofa avcodec"
3261 sofalizer_filter_select="fft"
3262 spectrumsynth_filter_deps="avcodec"
3263 spectrumsynth_filter_select="fft"
3264 spp_filter_deps="gpl avcodec"
3265 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3266 stereo3d_filter_deps="gpl"
3267 subtitles_filter_deps="avformat avcodec libass"
3268 super2xsai_filter_deps="gpl"
3269 pixfmts_super2xsai_test_deps="super2xsai_filter"
3270 tinterlace_filter_deps="gpl"
3271 tinterlace_merge_test_deps="tinterlace_filter"
3272 tinterlace_pad_test_deps="tinterlace_filter"
3273 tonemap_filter_deps="const_nan"
3274 unsharp_opencl_filter_deps="opencl"
3275 uspp_filter_deps="gpl avcodec"
3276 vaguedenoiser_filter_deps="gpl"
3277 vidstabdetect_filter_deps="libvidstab"
3278 vidstabtransform_filter_deps="libvidstab"
3279 libvmaf_filter_deps="libvmaf"
3280 zmq_filter_deps="libzmq"
3281 zoompan_filter_deps="swscale"
3282 zscale_filter_deps="libzimg const_nan"
3283 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3284 vpp_qsv_filter_deps="libmfx"
3285 vpp_qsv_filter_select="qsvvpp"
3286
3287 # examples
3288 avio_dir_cmd_deps="avformat avutil"
3289 avio_reading_deps="avformat avcodec avutil"
3290 decode_audio_example_deps="avcodec avutil"
3291 decode_video_example_deps="avcodec avutil"
3292 demuxing_decoding_example_deps="avcodec avformat avutil"
3293 encode_audio_example_deps="avcodec avutil"
3294 encode_video_example_deps="avcodec avutil"
3295 extract_mvs_example_deps="avcodec avformat avutil"
3296 filter_audio_example_deps="avfilter avutil"
3297 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3298 filtering_video_example_deps="avfilter avcodec avformat avutil"
3299 http_multiclient_example_deps="avformat avutil fork"
3300 hw_decode_example_deps="avcodec avformat avutil"
3301 metadata_example_deps="avformat avutil"
3302 muxing_example_deps="avcodec avformat avutil swscale"
3303 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3304 remuxing_example_deps="avcodec avformat avutil"
3305 resampling_audio_example_deps="avutil swresample"
3306 scaling_video_example_deps="avutil swscale"
3307 transcode_aac_example_deps="avcodec avformat swresample"
3308 transcoding_example_deps="avfilter avcodec avformat avutil"
3309 vaapi_encode_example_deps="avcodec avutil"
3310
3311 # EXTRALIBS_LIST
3312 cpu_init_extralibs="pthreads_extralibs"
3313 cws2fws_extralibs="zlib_extralibs"
3314
3315 # libraries, in linking order
3316 avcodec_deps="avutil"
3317 avcodec_suggest="libm"
3318 avcodec_select="null_bsf"
3319 avdevice_deps="avformat avcodec avutil"
3320 avdevice_suggest="libm"
3321 avfilter_deps="avutil"
3322 avfilter_suggest="libm"
3323 avformat_deps="avcodec avutil"
3324 avformat_suggest="libm network zlib"
3325 avresample_deps="avutil"
3326 avresample_suggest="libm"
3327 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3328 postproc_deps="avutil gpl"
3329 postproc_suggest="libm"
3330 swresample_deps="avutil"
3331 swresample_suggest="libm libsoxr"
3332 swscale_deps="avutil"
3333 swscale_suggest="libm"
3334
3335 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3336 avfilter_extralibs="pthreads_extralibs"
3337 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3338
3339 # programs
3340 ffmpeg_deps="avcodec avfilter avformat swresample"
3341 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3342                null_filter
3343                trim_filter"
3344 ffmpeg_suggest="ole32 psapi shell32"
3345 ffplay_deps="avcodec avformat swscale swresample sdl2"
3346 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3347 ffplay_suggest="shell32"
3348 ffprobe_deps="avcodec avformat"
3349 ffprobe_suggest="shell32"
3350 ffserver_deps="avformat fork sarestart"
3351 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3352
3353 # documentation
3354 podpages_deps="perl"
3355 manpages_deps="perl pod2man"
3356 htmlpages_deps="perl"
3357 htmlpages_deps_any="makeinfo_html texi2html"
3358 txtpages_deps="perl makeinfo"
3359 doc_deps_any="manpages htmlpages podpages txtpages"
3360
3361 # default parameters
3362
3363 logfile="ffbuild/config.log"
3364
3365 # installation paths
3366 prefix_default="/usr/local"
3367 bindir_default='${prefix}/bin'
3368 datadir_default='${prefix}/share/ffmpeg'
3369 docdir_default='${prefix}/share/doc/ffmpeg'
3370 incdir_default='${prefix}/include'
3371 libdir_default='${prefix}/lib'
3372 mandir_default='${prefix}/share/man'
3373
3374 # toolchain
3375 ar_default="ar"
3376 cc_default="gcc"
3377 cxx_default="g++"
3378 host_cc_default="gcc"
3379 doxygen_default="doxygen"
3380 install="install"
3381 ln_s_default="ln -s -f"
3382 nm_default="nm -g"
3383 pkg_config_default=pkg-config
3384 ranlib_default="ranlib"
3385 strip_default="strip"
3386 version_script='--version-script'
3387 objformat="elf32"
3388 x86asmexe_default="nasm"
3389 windres_default="windres"
3390 nvcc_default="nvcc"
3391 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3392 striptype="direct"
3393
3394 # OS
3395 target_os_default=$(tolower $(uname -s))
3396 host_os=$target_os_default
3397
3398 # machine
3399 if test "$target_os_default" = aix; then
3400     arch_default=$(uname -p)
3401     strip_default="strip -X32_64"
3402 else
3403     arch_default=$(uname -m)
3404 fi
3405 cpu="generic"
3406 intrinsics="none"
3407
3408 # configurable options
3409 enable $PROGRAM_LIST
3410 enable $DOCUMENT_LIST
3411 enable $EXAMPLE_LIST
3412 enable $(filter_out avresample $LIBRARY_LIST)
3413 enable stripping
3414
3415 enable asm
3416 enable debug
3417 enable doc
3418 enable faan faandct faanidct
3419 enable optimizations
3420 enable runtime_cpudetect
3421 enable safe_bitstream_reader
3422 enable static
3423 enable swscale_alpha
3424 enable valgrind_backtrace
3425
3426 sws_max_filter_size_default=256
3427 set_default sws_max_filter_size
3428
3429 # internal components are enabled by default
3430 enable $EXTRALIBS_LIST
3431
3432 # Avoid external, non-system, libraries getting enabled by dependency resolution
3433 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3434
3435 # build settings
3436 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3437 LIBPREF="lib"
3438 LIBSUF=".a"
3439 FULLNAME='$(NAME)$(BUILDSUF)'
3440 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3441 SLIBPREF="lib"
3442 SLIBSUF=".so"
3443 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3444 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3445 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3446 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3447 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3448 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3449 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3450
3451 asflags_filter=echo
3452 cflags_filter=echo
3453 ldflags_filter=echo
3454
3455 AS_C='-c'
3456 AS_O='-o $@'
3457 CC_C='-c'
3458 CC_E='-E -o $@'
3459 CC_O='-o $@'
3460 CXX_C='-c'
3461 CXX_O='-o $@'
3462 OBJCC_C='-c'
3463 OBJCC_E='-E -o $@'
3464 OBJCC_O='-o $@'
3465 X86ASM_O='-o $@'
3466 LD_O='-o $@'
3467 LD_LIB='-l%'
3468 LD_PATH='-L'
3469 HOSTCC_C='-c'
3470 HOSTCC_E='-E -o $@'
3471 HOSTCC_O='-o $@'
3472 HOSTLD_O='-o $@'
3473 NVCC_C='-c'
3474 NVCC_O='-o $@'
3475
3476 host_extralibs='-lm'
3477 host_cflags_filter=echo
3478 host_ldflags_filter=echo
3479
3480 target_path='$(CURDIR)'
3481
3482 # since the object filename is not given with the -MM flag, the compiler
3483 # is only able to print the basename, and we must add the path ourselves
3484 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3485 DEPFLAGS='-MM'
3486
3487 mkdir -p ffbuild
3488
3489 # find source path
3490 if test -f configure; then
3491     source_path=.
3492 else
3493     source_path=$(cd $(dirname "$0"); pwd)
3494     case "$source_path" in
3495         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3496     esac
3497     test -e "$source_path/config.h" &&
3498         die "Out of tree builds are impossible with config.h in source dir."
3499 fi
3500
3501 for v in "$@"; do
3502     r=${v#*=}
3503     l=${v%"$r"}
3504     r=$(sh_quote "$r")
3505     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3506 done
3507
3508 find_things(){
3509     thing=$1
3510     pattern=$2
3511     file=$source_path/$3
3512     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3513 }
3514
3515 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3516 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3517 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3518 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3519 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3520 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3521 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3522 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3523
3524 find_things_extern(){
3525     thing=$1
3526     pattern=$2
3527     file=$source_path/$3
3528     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3529 }
3530
3531 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3532 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3533 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3534
3535 AVCODEC_COMPONENTS_LIST="
3536     $BSF_LIST
3537     $DECODER_LIST
3538     $ENCODER_LIST
3539     $HWACCEL_LIST
3540     $PARSER_LIST
3541 "
3542
3543 AVDEVICE_COMPONENTS_LIST="
3544     $INDEV_LIST
3545     $OUTDEV_LIST
3546 "
3547
3548 AVFILTER_COMPONENTS_LIST="
3549     $FILTER_LIST
3550 "
3551
3552 AVFORMAT_COMPONENTS_LIST="
3553     $DEMUXER_LIST
3554     $MUXER_LIST
3555     $PROTOCOL_LIST
3556 "
3557
3558 ALL_COMPONENTS="
3559     $AVCODEC_COMPONENTS_LIST
3560     $AVDEVICE_COMPONENTS_LIST
3561     $AVFILTER_COMPONENTS_LIST
3562     $AVFORMAT_COMPONENTS_LIST
3563 "
3564
3565 for n in $COMPONENT_LIST; do
3566     v=$(toupper ${n%s})_LIST
3567     eval enable \$$v
3568     eval ${n}_if_any="\$$v"
3569 done
3570
3571 enable $ARCH_EXT_LIST
3572
3573 die_unknown(){
3574     echo "Unknown option \"$1\"."
3575     echo "See $0 --help for available options."
3576     exit 1
3577 }
3578
3579 print_in_columns() {
3580     cols=$(expr $ncols / 24)
3581     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3582 }
3583
3584 show_list() {
3585     suffix=_$1
3586     shift
3587     echo $* | sed s/$suffix//g | print_in_columns
3588     exit 0
3589 }
3590
3591 rand_list(){
3592     IFS=', '
3593     set -- $*
3594     unset IFS
3595     for thing; do
3596         comp=${thing%:*}
3597         prob=${thing#$comp}
3598         prob=${prob#:}
3599         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3600         echo "prob ${prob:-0.5}"
3601         printf '%s\n' $comp
3602     done
3603 }
3604
3605 do_random(){
3606     action=$1
3607     shift
3608     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3609     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3610 }
3611
3612 for opt do
3613     optval="${opt#*=}"
3614     case "$opt" in
3615         --extra-ldflags=*)
3616             add_ldflags $optval
3617         ;;
3618         --extra-ldexeflags=*)
3619             add_ldexeflags $optval
3620         ;;
3621         --extra-ldsoflags=*)
3622             add_ldsoflags $optval
3623         ;;
3624         --extra-ldlibflags=*)
3625             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3626                  "removed in the future. Use --extra-ldsoflags instead."
3627             add_ldsoflags $optval
3628         ;;
3629         --extra-libs=*)
3630             add_extralibs $optval
3631         ;;
3632         --disable-devices)
3633             disable $INDEV_LIST $OUTDEV_LIST
3634         ;;
3635         --enable-debug=*)
3636             debuglevel="$optval"
3637         ;;
3638         --disable-programs)
3639             disable $PROGRAM_LIST
3640         ;;
3641         --disable-everything)
3642             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3643         ;;
3644         --disable-all)
3645             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3646             disable $LIBRARY_LIST $PROGRAM_LIST doc
3647             enable avutil
3648         ;;
3649         --enable-random|--disable-random)
3650             action=${opt%%-random}
3651             do_random ${action#--} $COMPONENT_LIST
3652         ;;
3653         --enable-random=*|--disable-random=*)
3654             action=${opt%%-random=*}
3655             do_random ${action#--} $optval
3656         ;;
3657         --enable-sdl)
3658             enable sdl2
3659         ;;
3660         --enable-*=*|--disable-*=*)
3661             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3662             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3663             eval list=\$$(toupper $thing)_LIST
3664             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3665             list=$(filter "$name" $list)
3666             [ "$list" = "" ] && warn "Option $opt did not match anything"
3667             $action $list
3668         ;;
3669         --enable-yasm|--disable-yasm)
3670             warn "The ${opt} option is only provided for compatibility and will be\n"\
3671                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3672             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3673         ;;
3674         --yasmexe=*)
3675             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3676                  "removed in the future. Use --x86asmexe instead."
3677             x86asmexe="$optval"
3678         ;;
3679         --enable-?*|--disable-?*)
3680             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3681             if is_in $option $COMPONENT_LIST; then
3682                 test $action = disable && action=unset
3683                 eval $action \$$(toupper ${option%s})_LIST
3684             elif is_in $option $CMDLINE_SELECT; then
3685                 $action $option
3686             else
3687                 die_unknown $opt
3688             fi
3689         ;;
3690         --list-*)
3691             NAME="${opt#--list-}"
3692             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3693             NAME=${NAME%s}
3694             eval show_list $NAME \$$(toupper $NAME)_LIST
3695         ;;
3696         --help|-h) show_help
3697         ;;
3698         --quiet|-q) quiet=yes
3699         ;;
3700         --fatal-warnings) enable fatal_warnings
3701         ;;
3702         --libfuzzer=*)
3703             libfuzzer_path="$optval"
3704         ;;
3705         *)
3706             optname="${opt%%=*}"
3707             optname="${optname#--}"
3708             optname=$(echo "$optname" | sed 's/-/_/g')
3709             if is_in $optname $CMDLINE_SET; then
3710                 eval $optname='$optval'
3711             elif is_in $optname $CMDLINE_APPEND; then
3712                 append $optname "$optval"
3713             else
3714                 die_unknown $opt
3715             fi
3716         ;;
3717     esac
3718 done
3719
3720 for e in $env; do
3721     eval "export $e"
3722 done
3723
3724 if disabled autodetect; then
3725
3726     # Unless iconv is explicitely disabled by the user, we still want to probe
3727     # for the iconv from the libc.
3728     disabled iconv || enable libc_iconv
3729
3730     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3731     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3732 fi
3733 # Mark specifically enabled, but normally autodetected libraries as requested.
3734 for lib in $AUTODETECT_LIBS; do
3735     enabled $lib && request $lib
3736 done
3737 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3738 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3739 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3740
3741 disabled logging && logfile=/dev/null
3742
3743 # command line configuration sanity checks
3744
3745 # we need to build at least one lib type
3746 if ! enabled_any static shared; then
3747     cat <<EOF
3748 At least one library type must be built.
3749 Specify --enable-static to build the static libraries or --enable-shared to
3750 build the shared libraries as well. To only build the shared libraries specify
3751 --disable-static in addition to --enable-shared.
3752 EOF
3753     exit 1
3754 fi
3755
3756 die_license_disabled() {
3757     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3758 }
3759
3760 die_license_disabled_gpl() {
3761     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3762 }
3763
3764 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3765 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3766
3767 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3768 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3769
3770 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3771
3772 enabled_all gnutls openssl &&
3773     die "GnuTLS and OpenSSL must not be enabled at the same time."
3774
3775 # Disable all the library-specific components if the library itself
3776 # is disabled, see AVCODEC_LIST and following _LIST variables.
3777
3778 disable_components(){
3779     disabled ${1} && disable $(
3780         eval components="\$$(toupper ${1})_COMPONENTS"
3781         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3782     )
3783 }
3784
3785 map 'disable_components $v' $LIBRARY_LIST
3786
3787 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3788 set >> $logfile
3789
3790 test -n "$valgrind" && toolchain="valgrind-memcheck"
3791
3792 enabled ossfuzz && {
3793     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3794     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3795 }
3796
3797 case "$toolchain" in
3798     *-asan)
3799         cc_default="${toolchain%-asan}"
3800         add_cflags  -fsanitize=address
3801         add_ldflags -fsanitize=address
3802     ;;
3803     *-msan)
3804         cc_default="${toolchain%-msan}"
3805         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3806         add_ldflags -fsanitize=memory
3807     ;;
3808     *-tsan)
3809         cc_default="${toolchain%-tsan}"
3810         add_cflags  -fsanitize=thread -fPIE
3811         add_ldflags -fsanitize=thread -pie
3812         case "$toolchain" in
3813             gcc-tsan)
3814                 add_cflags  -fPIC
3815                 add_ldflags -fPIC
3816                 ;;
3817         esac
3818     ;;
3819     *-usan)
3820         cc_default="${toolchain%-usan}"
3821         add_cflags  -fsanitize=undefined
3822         add_ldflags -fsanitize=undefined
3823     ;;
3824     valgrind-*)
3825         target_exec_default="valgrind"
3826         case "$toolchain" in
3827             valgrind-massif)
3828                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3829                 ;;
3830             valgrind-memcheck)
3831                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3832                 ;;
3833         esac
3834     ;;
3835     msvc)
3836         # Check whether the current MSVC version needs the C99 converter.
3837         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3838         # support enough of C99 to build ffmpeg. Default to the new
3839         # behaviour if the regexp was unable to match anything, since this
3840         # successfully parses the version number of existing supported
3841         # versions that require the converter (MSVC 2010 and 2012).
3842         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3843         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3844             cc_default="cl"
3845             cxx_default="cl"
3846         else
3847             cc_default="c99wrap cl"
3848             cxx_default="c99wrap cl"
3849         fi
3850         ld_default="$source_path/compat/windows/mslink"
3851         nm_default="dumpbin -symbols"
3852         ar_default="lib"
3853         case "$arch" in
3854         aarch64|arm64)
3855             as_default="armasm64"
3856             ;;
3857         arm*)
3858             as_default="armasm"
3859             ;;
3860         esac
3861         target_os_default="win32"
3862         # Use a relative path for TMPDIR. This makes sure all the
3863         # ffconf temp files are written with a relative path, avoiding
3864         # issues with msys/win32 path conversion for MSVC parameters
3865         # such as -Fo<file> or -out:<file>.
3866         TMPDIR=.
3867     ;;
3868     icl)
3869         cc_default="icl"
3870         ld_default="xilink"
3871         nm_default="dumpbin -symbols"
3872         ar_default="xilib"
3873         target_os_default="win32"
3874         TMPDIR=.
3875     ;;
3876     gcov)
3877         add_cflags  -fprofile-arcs -ftest-coverage
3878         add_ldflags -fprofile-arcs -ftest-coverage
3879     ;;
3880     llvm-cov)
3881         add_cflags -fprofile-arcs -ftest-coverage
3882         add_ldflags --coverage
3883     ;;
3884     hardened)
3885         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3886         add_cflags   -fno-strict-overflow -fstack-protector-all
3887         add_ldflags  -Wl,-z,relro -Wl,-z,now
3888         add_cflags   -fPIE
3889         add_ldexeflags -fPIE -pie
3890     ;;
3891     ?*)
3892         die "Unknown toolchain $toolchain"
3893     ;;
3894 esac
3895
3896 if test -n "$cross_prefix"; then
3897     test -n "$arch" && test -n "$target_os" ||
3898         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3899     enable cross_compile
3900 fi
3901
3902 ar_default="${cross_prefix}${ar_default}"
3903 cc_default="${cross_prefix}${cc_default}"
3904 cxx_default="${cross_prefix}${cxx_default}"
3905 nm_default="${cross_prefix}${nm_default}"
3906 pkg_config_default="${cross_prefix}${pkg_config_default}"
3907 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3908     ranlib_default="${cross_prefix}${ranlib_default} -D"
3909 else
3910     ranlib_default="${cross_prefix}${ranlib_default}"
3911 fi
3912 strip_default="${cross_prefix}${strip_default}"
3913 windres_default="${cross_prefix}${windres_default}"
3914
3915 sysinclude_default="${sysroot}/usr/include"
3916
3917 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3918     target_exec target_os x86asmexe nvcc
3919 enabled cross_compile || host_cc_default=$cc
3920 set_default host_cc
3921
3922 pkg_config_fail_message=""
3923 if ! $pkg_config --version >/dev/null 2>&1; then
3924     warn "$pkg_config not found, library detection may fail."
3925     pkg_config=false
3926 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3927     pkg_config_fail_message="
3928 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3929 fi
3930
3931 if test $doxygen != $doxygen_default && \
3932   ! $doxygen --version >/dev/null 2>&1; then
3933     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3934 fi
3935
3936 exesuf() {
3937     case $1 in
3938         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3939     esac
3940 }
3941
3942 EXESUF=$(exesuf $target_os)
3943 HOSTEXESUF=$(exesuf $host_os)
3944
3945 # set temporary file name
3946 : ${TMPDIR:=$TEMPDIR}
3947 : ${TMPDIR:=$TMP}
3948 : ${TMPDIR:=/tmp}
3949
3950 if [ -n "$tempprefix" ] ; then
3951     mktemp(){
3952         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3953         echo "$tmpname"
3954         mkdir "$tmpname"
3955     }
3956 elif ! check_cmd mktemp -u XXXXXX; then
3957     # simple replacement for missing mktemp
3958     # NOT SAFE FOR GENERAL USE
3959     mktemp(){
3960         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3961         echo "$tmpname"
3962         mkdir "$tmpname"
3963     }
3964 fi
3965
3966 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3967     die "Unable to create temporary directory in $TMPDIR."
3968
3969 tmpfile(){
3970     tmp="${FFTMPDIR}/test"$2
3971     (set -C; exec > $tmp) 2> /dev/null ||
3972         die "Unable to create temporary file in $FFTMPDIR."
3973     eval $1=$tmp
3974 }
3975
3976 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3977 trap 'exit 2' INT
3978
3979 tmpfile TMPASM .asm
3980 tmpfile TMPC   .c
3981 tmpfile TMPCPP .cpp
3982 tmpfile TMPE   $EXESUF
3983 tmpfile TMPH   .h
3984 tmpfile TMPM   .m
3985 tmpfile TMPO   .o
3986 tmpfile TMPS   .S
3987 tmpfile TMPSH  .sh
3988 tmpfile TMPV   .ver
3989
3990 unset -f mktemp
3991
3992 chmod +x $TMPE
3993
3994 # make sure we can execute files in $TMPDIR
3995 cat > $TMPSH 2>> $logfile <<EOF
3996 #! /bin/sh
3997 EOF
3998 chmod +x $TMPSH >> $logfile 2>&1
3999 if ! $TMPSH >> $logfile 2>&1; then
4000     cat <<EOF
4001 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4002 variable to another directory and make sure that it is not mounted noexec.
4003 EOF
4004     die "Sanity test failed."
4005 fi
4006
4007 armasm_flags(){
4008     for flag; do
4009         case $flag in
4010             # Filter out MSVC cl.exe options from cflags that shouldn't
4011             # be passed to gas-preprocessor
4012             -M[TD]*)                                            ;;
4013             *)                  echo $flag                      ;;
4014         esac
4015    done
4016 }
4017
4018 cparser_flags(){
4019     for flag; do
4020         case $flag in
4021             -Wno-switch)             echo -Wno-switch-enum ;;
4022             -Wno-format-zero-length) ;;
4023             -Wdisabled-optimization) ;;
4024             -Wno-pointer-sign)       echo -Wno-other ;;
4025             *)                       echo $flag ;;
4026         esac
4027     done
4028 }
4029
4030 msvc_common_flags(){
4031     for flag; do
4032         case $flag in
4033             # In addition to specifying certain flags under the compiler
4034             # specific filters, they must be specified here as well or else the
4035             # generic catch all at the bottom will print the original flag.
4036             -Wall)                ;;
4037             -Wextra)              ;;
4038             -std=c99)             ;;
4039             # Common flags
4040             -fomit-frame-pointer) ;;
4041             -g)                   echo -Z7 ;;
4042             -fno-math-errno)      ;;
4043             -fno-common)          ;;
4044             -fno-signed-zeros)    ;;
4045             -fPIC)                ;;
4046             -mthumb)              ;;
4047             -march=*)             ;;
4048             -lz)                  echo zlib.lib ;;
4049             -lx264)               echo libx264.lib ;;
4050             -lstdc++)             ;;
4051             -l*)                  echo ${flag#-l}.lib ;;
4052             -LARGEADDRESSAWARE)   echo $flag ;;
4053             -L*)                  echo -libpath:${flag#-L} ;;
4054             *)                    echo $flag ;;
4055         esac
4056     done
4057 }
4058
4059 msvc_flags(){
4060     msvc_common_flags "$@"
4061     for flag; do
4062         case $flag in
4063             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4064                                        -wd4554 ;;
4065             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4066                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4067                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4068                                        -wd4307 \
4069                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4070         esac
4071     done
4072 }
4073
4074 icl_flags(){
4075     msvc_common_flags "$@"
4076     for flag; do
4077         case $flag in
4078             # Despite what Intel's documentation says -Wall, which is supported
4079             # on Windows, does enable remarks so disable them here.
4080             -Wall)                echo $flag -Qdiag-disable:remark ;;
4081             -std=c99)             echo -Qstd=c99 ;;
4082             -flto)                echo -ipo ;;
4083         esac
4084     done
4085 }
4086
4087 icc_flags(){
4088     for flag; do
4089         case $flag in
4090             -flto)                echo -ipo ;;
4091             *)                    echo $flag ;;
4092         esac
4093     done
4094 }
4095
4096 suncc_flags(){
4097     for flag; do
4098         case $flag in
4099             -march=*|-mcpu=*)
4100                 case "${flag#*=}" in
4101                     native)                   echo -xtarget=native       ;;
4102                     v9|niagara)               echo -xarch=sparc          ;;
4103                     ultrasparc)               echo -xarch=sparcvis       ;;
4104                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4105                     i586|pentium)             echo -xchip=pentium        ;;
4106                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4107                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4108                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4109                     pentium4*)          echo -xtarget=pentium4           ;;
4110                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4111                     *-sse3)             echo -xarch=sse3                 ;;
4112                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4113                     bonnell)                   echo -xarch=ssse3         ;;
4114                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4115                     westmere)                  echo -xtarget=westmere    ;;
4116                     silvermont)                echo -xarch=sse4_2        ;;
4117                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4118                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4119                                                echo -xarch=avx           ;;
4120                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4121                     btver1)                    echo -xarch=amdsse4a      ;;
4122                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4123                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4124                     k8|opteron|athlon64|athlon-fx)
4125                                                echo -xarch=sse2a         ;;
4126                     athlon*)                   echo -xarch=pentium_proa  ;;
4127                 esac
4128                 ;;
4129             -std=c99)             echo -xc99              ;;
4130             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4131             -fPIC)                echo -KPIC -xcode=pic32 ;;
4132             -W*,*)                echo $flag              ;;
4133             -f*-*|-W*|-mimpure-text)                      ;;
4134             -shared)              echo -G                 ;;
4135             *)                    echo $flag              ;;
4136         esac
4137     done
4138 }
4139
4140 probe_cc(){
4141     pfx=$1
4142     _cc=$2
4143     first=$3
4144
4145     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4146     unset _ld_o _ldflags _ld_lib _ld_path
4147     unset _depflags _DEPCMD _DEPFLAGS
4148     _flags_filter=echo
4149
4150     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4151         true # no-op to avoid reading stdin in following checks
4152     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4153         _type=llvm_gcc
4154         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4155         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4156         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4157         _cflags_speed='-O3'
4158         _cflags_size='-Os'
4159     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4160         _type=gcc
4161         gcc_version=$($_cc --version | head -n1)
4162         gcc_basever=$($_cc -dumpversion)
4163         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4164         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4165         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4166         case $gcc_basever in
4167             2) ;;
4168             2.*) ;;
4169             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4170         esac
4171         if [ "$first" = true ]; then
4172             case $gcc_basever in
4173                 4.2*)
4174                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4175             esac
4176         fi
4177         _cflags_speed='-O3'
4178         _cflags_size='-Os'
4179     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4180         _type=icc
4181         _ident=$($_cc --version | head -n1)
4182         _depflags='-MMD'
4183         _cflags_speed='-O3'
4184         _cflags_size='-Os'
4185         _cflags_noopt='-O1'
4186         _flags_filter=icc_flags
4187     elif $_cc -v 2>&1 | grep -q xlc; then
4188         _type=xlc
4189         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4190         _cflags_speed='-O5'
4191         _cflags_size='-O5 -qcompact'
4192     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4193         test -d "$sysroot" || die "No valid sysroot specified."
4194         _type=armcc
4195         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4196         armcc_conf="$PWD/armcc.conf"
4197         $_cc --arm_linux_configure                 \
4198              --arm_linux_config_file="$armcc_conf" \
4199              --configure_sysroot="$sysroot"        \
4200              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4201              die "Error creating armcc configuration file."
4202         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4203         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4204         as_default="${cross_prefix}gcc"
4205         _depflags='-MMD'
4206         _cflags_speed='-O3'
4207         _cflags_size='-Os'
4208     elif $_cc -v 2>&1 | grep -q clang; then
4209         _type=clang
4210         _ident=$($_cc --version 2>/dev/null | head -n1)
4211         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4212         _cflags_speed='-O3'
4213         _cflags_size='-Oz'
4214     elif $_cc -V 2>&1 | grep -q Sun; then
4215         _type=suncc
4216         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4217         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4218         _DEPFLAGS='-xM1 -xc99'
4219         _ldflags='-std=c99'
4220         _cflags_speed='-O5'
4221         _cflags_size='-O5 -xspace'
4222         _flags_filter=suncc_flags
4223     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4224         _type=pathscale
4225         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4226         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4227         _cflags_speed='-O2'
4228         _cflags_size='-Os'
4229         _flags_filter='filter_out -Wdisabled-optimization'
4230     elif $_cc -v 2>&1 | grep -q Open64; then
4231         _type=open64
4232         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4233         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4234         _cflags_speed='-O2'
4235         _cflags_size='-Os'
4236         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4237     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4238         _type=armasm
4239         _ident=$($_cc | head -n1)
4240         # 4509: "This form of conditional instruction is deprecated"
4241         _flags="-nologo -ignore 4509"
4242         _flags_filter=armasm_flags
4243     elif $_cc 2>&1 | grep -q Intel; then
4244         _type=icl
4245         _ident=$($_cc 2>&1 | head -n1)
4246         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4247         # Not only is O3 broken on 13.x+ but it is slower on all previous
4248         # versions (tested) as well.
4249         _cflags_speed="-O2"
4250         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4251         if $_cc 2>&1 | grep -q Linker; then
4252             _ld_o='-out:$@'
4253         else
4254             _ld_o='-Fe$@'
4255         fi
4256         _cc_o='-Fo$@'
4257         _cc_e='-P'
4258         _flags_filter=icl_flags
4259         _ld_lib='lib%.a'
4260         _ld_path='-libpath:'
4261         # -Qdiag-error to make icl error when seeing certain unknown arguments
4262         _flags='-nologo -Qdiag-error:4044,10157'
4263         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4264         # with MSVC which enables it by default.
4265         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4266         disable stripping
4267     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4268         # lld can emulate multiple different linkers; in ms link.exe mode,
4269         # the -? parameter gives the help output which contains an identifyable
4270         # string, while it gives an error in other modes.
4271         _type=lld-link
4272         # The link.exe mode doesn't have a switch for getting the version,
4273         # but we can force it back to gnu mode and get the version from there.
4274         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4275         _ld_o='-out:$@'
4276         _flags_filter=msvc_flags
4277         _ld_lib='lib%.a'
4278         _ld_path='-libpath:'
4279     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4280         _type=msvc
4281         _ident=$($_cc 2>&1 | head -n1)
4282         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4283         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4284         _cflags_speed="-O2"
4285         _cflags_size="-O1"
4286         _cflags_noopt="-O1"
4287         if $_cc -nologo- 2>&1 | grep -q Linker; then
4288             _ld_o='-out:$@'
4289         else
4290             _ld_o='-Fe$@'
4291         fi
4292         _cc_o='-Fo$@'
4293         _cc_e='-P -Fi$@'
4294         _flags_filter=msvc_flags
4295         _ld_lib='lib%.a'
4296         _ld_path='-libpath:'
4297         _flags='-nologo'
4298         disable stripping
4299     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4300         _type=cparser
4301         _ident=$($_cc --version | head -n1)
4302         _depflags='-MMD'
4303         _cflags_speed='-O4'
4304         _cflags_size='-O2'
4305         _flags_filter=cparser_flags
4306     fi
4307
4308     eval ${pfx}_type=\$_type
4309     eval ${pfx}_ident=\$_ident
4310 }
4311
4312 set_ccvars(){
4313     eval ${1}_C=\${_cc_c-\${${1}_C}}
4314     eval ${1}_E=\${_cc_e-\${${1}_E}}
4315     eval ${1}_O=\${_cc_o-\${${1}_O}}
4316
4317     if [ -n "$_depflags" ]; then
4318         eval ${1}_DEPFLAGS=\$_depflags
4319     else
4320         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4321         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4322         eval DEP${1}FLAGS=\$_flags
4323     fi
4324 }
4325
4326 probe_cc cc "$cc" "true"
4327 cflags_filter=$_flags_filter
4328 cflags_speed=$_cflags_speed
4329 cflags_size=$_cflags_size
4330 cflags_noopt=$_cflags_noopt
4331 add_cflags $_flags $_cflags
4332 cc_ldflags=$_ldflags
4333 set_ccvars CC
4334 set_ccvars CXX
4335
4336 probe_cc hostcc "$host_cc"
4337 host_cflags_filter=$_flags_filter
4338 host_cflags_speed=$_cflags_speed
4339 add_host_cflags  $_flags $_cflags
4340 set_ccvars HOSTCC
4341
4342 test -n "$cc_type" && enable $cc_type ||
4343     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4344
4345 : ${as_default:=$cc}
4346 : ${objcc_default:=$cc}
4347 : ${dep_cc_default:=$cc}
4348 : ${ld_default:=$cc}
4349 : ${host_ld_default:=$host_cc}
4350 set_default ar as objcc dep_cc ld ln_s host_ld windres
4351
4352 probe_cc as "$as"
4353 asflags_filter=$_flags_filter
4354 add_asflags $_flags $_cflags
4355 set_ccvars AS
4356
4357 probe_cc objcc "$objcc"
4358 objcflags_filter=$_flags_filter
4359 add_objcflags $_flags $_cflags
4360 set_ccvars OBJC
4361
4362 probe_cc ld "$ld"
4363 ldflags_filter=$_flags_filter
4364 add_ldflags $_flags $_ldflags
4365 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4366 LD_O=${_ld_o-$LD_O}
4367 LD_LIB=${_ld_lib-$LD_LIB}
4368 LD_PATH=${_ld_path-$LD_PATH}
4369
4370 probe_cc hostld "$host_ld"
4371 host_ldflags_filter=$_flags_filter
4372 add_host_ldflags $_flags $_ldflags
4373 HOSTLD_O=${_ld_o-$HOSTLD_O}
4374
4375 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4376     probe_cc depcc "$dep_cc"
4377     CCDEP=${_DEPCMD:-$DEPCMD}
4378     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4379     DEPCCFLAGS=$_flags
4380 fi
4381
4382 if $ar 2>&1 | grep -q Microsoft; then
4383     arflags="-nologo"
4384     ar_o='-out:$@'
4385 elif $ar 2>&1 | grep -q "\[D\] "; then
4386     arflags="rcD"
4387     ar_o='$@'
4388 else
4389     arflags="rc"
4390     ar_o='$@'
4391 fi
4392
4393 add_cflags $extra_cflags
4394 add_cxxflags $extra_cxxflags
4395 add_objcflags $extra_objcflags
4396 add_asflags $extra_cflags
4397
4398 if test -n "$sysroot"; then
4399     case "$cc_type" in
4400         gcc|llvm_gcc|clang)
4401             add_cppflags --sysroot="$sysroot"
4402             add_ldflags --sysroot="$sysroot"
4403         ;;
4404     esac
4405 fi
4406
4407 if test "$cpu" = host; then
4408     enabled cross_compile &&
4409         die "--cpu=host makes no sense when cross-compiling."
4410
4411     case "$cc_type" in
4412         gcc|llvm_gcc)
4413             check_native(){
4414                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4415                 sed -n "/cc1.*$1=/{
4416                             s/.*$1=\\([^ ]*\\).*/\\1/
4417                             p
4418                             q
4419                         }" $TMPE
4420             }
4421             cpu=$(check_native -march || check_native -mcpu)
4422         ;;
4423         clang)
4424             check_native(){
4425                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4426                 sed -n "/cc1.*-target-cpu /{
4427                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4428                             p
4429                             q
4430                         }" $TMPE
4431             }
4432             cpu=$(check_native -march)
4433         ;;
4434     esac
4435
4436     test "${cpu:-host}" = host &&
4437         die "--cpu=host not supported with compiler $cc"
4438 fi
4439
4440 # Deal with common $arch aliases
4441 case "$arch" in
4442     aarch64|arm64)
4443         arch="aarch64"
4444     ;;
4445     arm*|iPad*|iPhone*)
4446         arch="arm"
4447     ;;
4448     mips*|IP*)
4449         case "$arch" in
4450         *el)
4451             add_cppflags -EL
4452             add_ldflags -EL
4453         ;;
4454         *eb)
4455             add_cppflags -EB
4456             add_ldflags -EB
4457         ;;
4458         esac
4459         arch="mips"
4460     ;;
4461     parisc*|hppa*)
4462         arch="parisc"
4463     ;;
4464     "Power Macintosh"|ppc*|powerpc*)
4465         arch="ppc"
4466     ;;
4467     s390|s390x)
4468         arch="s390"
4469     ;;
4470     sh4|sh)
4471         arch="sh4"
4472     ;;
4473     sun4*|sparc*)
4474         arch="sparc"
4475     ;;
4476     tilegx|tile-gx)
4477         arch="tilegx"
4478     ;;
4479     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4480         arch="x86"
4481     ;;
4482 esac
4483
4484 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4485 enable $arch
4486
4487 # Add processor-specific flags
4488 if enabled aarch64; then
4489
4490     case $cpu in
4491         armv*)
4492             cpuflags="-march=$cpu"
4493         ;;
4494         *)
4495             cpuflags="-mcpu=$cpu"
4496         ;;
4497     esac
4498
4499 elif enabled alpha; then
4500
4501     cpuflags="-mcpu=$cpu"
4502
4503 elif enabled arm; then
4504
4505     check_arm_arch() {
4506         check_cpp_condition stddef.h \
4507             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4508             $cpuflags
4509     }
4510
4511     probe_arm_arch() {
4512         if   check_arm_arch 4;        then echo armv4
4513         elif check_arm_arch 4T;       then echo armv4t
4514         elif check_arm_arch 5;        then echo armv5
4515         elif check_arm_arch 5E;       then echo armv5e
4516         elif check_arm_arch 5T;       then echo armv5t
4517         elif check_arm_arch 5TE;      then echo armv5te
4518         elif check_arm_arch 5TEJ;     then echo armv5te
4519         elif check_arm_arch 6;        then echo armv6
4520         elif check_arm_arch 6J;       then echo armv6j
4521         elif check_arm_arch 6K;       then echo armv6k
4522         elif check_arm_arch 6Z;       then echo armv6z
4523         elif check_arm_arch 6ZK;      then echo armv6zk
4524         elif check_arm_arch 6T2;      then echo armv6t2
4525         elif check_arm_arch 7;        then echo armv7
4526         elif check_arm_arch 7A  7_A;  then echo armv7-a
4527         elif check_arm_arch 7S;       then echo armv7-a
4528         elif check_arm_arch 7R  7_R;  then echo armv7-r
4529         elif check_arm_arch 7M  7_M;  then echo armv7-m
4530         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4531         elif check_arm_arch 8A  8_A;  then echo armv8-a
4532         fi
4533     }
4534
4535     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4536
4537     case $cpu in
4538         armv*)
4539             cpuflags="-march=$cpu"
4540             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4541         ;;
4542         *)
4543             cpuflags="-mcpu=$cpu"
4544             case $cpu in
4545                 cortex-a*)                               subarch=armv7a  ;;
4546                 cortex-r*)                               subarch=armv7r  ;;
4547                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4548                 arm11*)                                  subarch=armv6   ;;
4549                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4550                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4551                 *)                             subarch=$(probe_arm_arch) ;;
4552             esac
4553         ;;
4554     esac
4555
4556     case "$subarch" in
4557         armv5t*)    enable fast_clz                ;;
4558         armv[6-8]*)
4559             enable fast_clz
4560             disabled fast_unaligned || enable fast_unaligned
4561             ;;
4562     esac
4563
4564 elif enabled avr32; then
4565
4566     case $cpu in
4567         ap7[02]0[0-2])
4568             subarch="avr32_ap"
4569             cpuflags="-mpart=$cpu"
4570         ;;
4571         ap)
4572             subarch="avr32_ap"
4573             cpuflags="-march=$cpu"
4574         ;;
4575         uc3[ab]*)
4576             subarch="avr32_uc"
4577             cpuflags="-mcpu=$cpu"
4578         ;;
4579         uc)
4580             subarch="avr32_uc"
4581             cpuflags="-march=$cpu"
4582         ;;
4583     esac
4584
4585 elif enabled bfin; then
4586
4587     cpuflags="-mcpu=$cpu"
4588
4589 elif enabled mips; then
4590
4591     cpuflags="-march=$cpu"
4592
4593     if [ "$cpu" != "generic" ]; then
4594         disable mips32r2
4595         disable mips32r5
4596         disable mips64r2
4597         disable mips32r6
4598         disable mips64r6
4599         disable loongson2
4600         disable loongson3
4601
4602         case $cpu in
4603             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4604                 enable mips32r2
4605                 disable msa
4606             ;;
4607             p5600|i6400|p6600)
4608                 disable mipsdsp
4609                 disable mipsdspr2
4610             ;;
4611             loongson*)
4612                 enable loongson2
4613                 enable loongson3
4614                 enable local_aligned
4615                 enable simd_align_16
4616                 enable fast_64bit
4617                 enable fast_clz
4618                 enable fast_cmov
4619                 enable fast_unaligned
4620                 disable aligned_stack
4621                 disable mipsfpu
4622                 disable mipsdsp
4623                 disable mipsdspr2
4624                 case $cpu in
4625                     loongson3*)
4626                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4627                     ;;
4628                     loongson2e)
4629                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4630                     ;;
4631                     loongson2f)
4632                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4633                     ;;
4634                 esac
4635             ;;
4636             *)
4637                 # Unknown CPU. Disable everything.
4638                 warn "unknown CPU. Disabling all MIPS optimizations."
4639                 disable mipsfpu
4640                 disable mipsdsp
4641                 disable mipsdspr2
4642                 disable msa
4643                 disable mmi
4644             ;;
4645         esac
4646
4647         case $cpu in
4648             24kc)
4649                 disable mipsfpu
4650                 disable mipsdsp
4651                 disable mipsdspr2
4652             ;;
4653             24kf*)
4654                 disable mipsdsp
4655                 disable mipsdspr2
4656             ;;
4657             24kec|34kc|1004kc)
4658                 disable mipsfpu
4659                 disable mipsdspr2
4660             ;;
4661             24kef*|34kf*|1004kf*)
4662                 disable mipsdspr2
4663             ;;
4664             74kc)
4665                 disable mipsfpu
4666             ;;
4667             p5600)
4668                 enable mips32r5
4669                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4670             ;;
4671             i6400)
4672                 enable mips64r6
4673                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4674             ;;
4675             p6600)
4676                 enable mips64r6
4677                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4678             ;;
4679         esac
4680     else
4681         # We do not disable anything. Is up to the user to disable the unwanted features.
4682         warn 'generic cpu selected'
4683     fi
4684
4685 elif enabled ppc; then
4686
4687     disable ldbrx
4688
4689     case $(tolower $cpu) in
4690         601|ppc601|powerpc601)
4691             cpuflags="-mcpu=601"
4692             disable altivec
4693         ;;
4694         603*|ppc603*|powerpc603*)
4695             cpuflags="-mcpu=603"
4696             disable altivec
4697         ;;
4698         604*|ppc604*|powerpc604*)
4699             cpuflags="-mcpu=604"
4700             disable altivec
4701         ;;
4702         g3|75*|ppc75*|powerpc75*)
4703             cpuflags="-mcpu=750"
4704             disable altivec
4705         ;;
4706         g4|745*|ppc745*|powerpc745*)
4707             cpuflags="-mcpu=7450"
4708             disable vsx
4709         ;;
4710         74*|ppc74*|powerpc74*)
4711             cpuflags="-mcpu=7400"
4712             disable vsx
4713         ;;
4714         g5|970|ppc970|powerpc970)
4715             cpuflags="-mcpu=970"
4716             disable vsx
4717         ;;
4718         power[3-6]*)
4719             cpuflags="-mcpu=$cpu"
4720             disable vsx
4721         ;;
4722         power[7-8]*)
4723             cpuflags="-mcpu=$cpu"
4724         ;;
4725         cell)
4726             cpuflags="-mcpu=cell"
4727             enable ldbrx
4728             disable vsx
4729         ;;
4730         e500mc)
4731             cpuflags="-mcpu=e500mc"
4732             disable altivec
4733         ;;
4734         e500v2)
4735             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4736             disable altivec
4737             disable dcbzl
4738         ;;
4739         e500)
4740             cpuflags="-mcpu=8540 -mhard-float"
4741             disable altivec
4742             disable dcbzl
4743         ;;
4744     esac
4745
4746 elif enabled sparc; then
4747
4748     case $cpu in
4749         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4750             cpuflags="-mcpu=$cpu"
4751         ;;
4752         ultrasparc*|niagara[234])
4753             cpuflags="-mcpu=$cpu"
4754         ;;
4755     esac
4756
4757 elif enabled x86; then
4758
4759     case $cpu in
4760         i[345]86|pentium)
4761             cpuflags="-march=$cpu"
4762             disable i686
4763             disable mmx
4764         ;;
4765         # targets that do NOT support nopl and conditional mov (cmov)
4766         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4767             cpuflags="-march=$cpu"
4768             disable i686
4769         ;;
4770         # targets that do support nopl and conditional mov (cmov)
4771         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4772         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4773         |amdfam10|barcelona|b[dt]ver*|znver*)
4774             cpuflags="-march=$cpu"
4775             enable i686
4776             enable fast_cmov
4777         ;;
4778         # targets that do support conditional mov but on which it's slow
4779         pentium4|pentium4m|prescott|nocona)
4780             cpuflags="-march=$cpu"
4781             enable i686
4782             disable fast_cmov
4783         ;;
4784     esac
4785
4786 fi
4787
4788 if [ "$cpu" != generic ]; then
4789     add_cflags  $cpuflags
4790     add_asflags $cpuflags
4791     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4792 fi
4793
4794 # compiler sanity check
4795 check_exec <<EOF
4796 int main(void){ return 0; }
4797 EOF
4798 if test "$?" != 0; then
4799     echo "$cc is unable to create an executable file."
4800     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4801         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4802         echo "Only do this if you know what cross compiling means."
4803     fi
4804     die "C compiler test failed."
4805 fi
4806
4807 add_cppflags -D_ISOC99_SOURCE
4808 add_cxxflags -D__STDC_CONSTANT_MACROS
4809 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4810
4811 # some compilers silently accept -std=c11, so we also need to check that the
4812 # version macro is defined properly
4813 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4814     add_cflags -std=c11 ||
4815     check_cflags -std=c99
4816
4817 check_cppflags -D_FILE_OFFSET_BITS=64
4818 check_cppflags -D_LARGEFILE_SOURCE
4819
4820 add_host_cppflags -D_ISOC99_SOURCE
4821 check_host_cflags -std=c99
4822 check_host_cflags -Wall
4823 check_host_cflags $host_cflags_speed
4824
4825 check_64bit(){
4826     arch32=$1
4827     arch64=$2
4828     expr=$3
4829     check_code cc "" "int test[2*($expr) - 1]" &&
4830         subarch=$arch64 || subarch=$arch32
4831     enable $subarch
4832 }
4833
4834 case "$arch" in
4835     aarch64|alpha|ia64)
4836         enabled shared && enable_weak pic
4837     ;;
4838     mips)
4839         check_64bit mips mips64 '_MIPS_SIM > 1'
4840         enabled shared && enable_weak pic
4841     ;;
4842     parisc)
4843         check_64bit parisc parisc64 'sizeof(void *) > 4'
4844         enabled shared && enable_weak pic
4845     ;;
4846     ppc)
4847         check_64bit ppc ppc64 'sizeof(void *) > 4'
4848         enabled shared && enable_weak pic
4849     ;;
4850     s390)
4851         check_64bit s390 s390x 'sizeof(void *) > 4'
4852         enabled shared && enable_weak pic
4853     ;;
4854     sparc)
4855         check_64bit sparc sparc64 'sizeof(void *) > 4'
4856         enabled shared && enable_weak pic
4857     ;;
4858     x86)
4859         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4860         # Treat x32 as x64 for now. Note it also needs pic if shared
4861         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4862             subarch=x86_64 && enable x86_64 && disable x86_32
4863         if enabled x86_64; then
4864             enabled shared && enable_weak pic
4865             objformat=elf64
4866         fi
4867     ;;
4868 esac
4869
4870 # OS specific
4871 case $target_os in
4872     aix)
4873         SHFLAGS=-shared
4874         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4875         enabled shared && add_ldflags -Wl,-brtl
4876         arflags='-Xany -r -c'
4877         ;;
4878     android)
4879         disable symver
4880         enable section_data_rel_ro
4881         SLIB_INSTALL_NAME='$(SLIBNAME)'
4882         SLIB_INSTALL_LINKS=
4883         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4884         ;;
4885     haiku)
4886         prefix_default="/boot/common"
4887         network_extralibs="-lnetwork"
4888         host_extralibs=
4889         ;;
4890     sunos)
4891         SHFLAGS='-shared -Wl,-h,$$(@F)'
4892         enabled x86 && append SHFLAGS -mimpure-text
4893         network_extralibs="-lsocket -lnsl"
4894         add_cppflags -D__EXTENSIONS__
4895         # When using suncc to build, the Solaris linker will mark
4896         # an executable with each instruction set encountered by
4897         # the Solaris assembler.  As our libraries contain their own
4898         # guards for processor-specific code, instead suppress
4899         # generation of the HWCAPS ELF section on Solaris x86 only.
4900         enabled_all suncc x86 &&
4901             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4902             add_ldflags -Wl,-M,mapfile
4903         nm_default='nm -P -g'
4904         version_script='-M'
4905         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4906         ;;
4907     netbsd)
4908         disable symver
4909         oss_indev_extralibs="-lossaudio"
4910         oss_outdev_extralibs="-lossaudio"
4911         enabled gcc || check_ldflags -Wl,-zmuldefs
4912         ;;
4913     openbsd|bitrig)
4914         disable symver
4915         SHFLAGS='-shared'
4916         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4917         SLIB_INSTALL_LINKS=
4918         oss_indev_extralibs="-lossaudio"
4919         oss_outdev_extralibs="-lossaudio"
4920         ;;
4921     dragonfly)
4922         disable symver
4923         ;;
4924     freebsd)
4925         ;;
4926     bsd/os)
4927         add_extralibs -lpoll -lgnugetopt
4928         strip="strip -d"
4929         ;;
4930     darwin)
4931         enabled ppc && add_asflags -force_cpusubtype_ALL
4932         install_name_dir_default='$(SHLIBDIR)'
4933         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4934         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4935         strip="${strip} -x"
4936         add_ldflags -Wl,-dynamic,-search_paths_first
4937         check_cflags -Werror=partial-availability
4938         SLIBSUF=".dylib"
4939         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4940         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4941         enabled x86_64 && objformat="macho64" || objformat="macho32"
4942         enabled_any pic shared x86_64 ||
4943             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4944         check_header dispatch/dispatch.h &&
4945             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4946         if test -n "$sysroot"; then
4947             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4948             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4949         fi
4950         version_script='-exported_symbols_list'
4951         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4952         ;;
4953     msys*)
4954         die "Native MSYS builds are discouraged, please use the MINGW environment."
4955         ;;
4956     mingw32*|mingw64*)
4957         target_os=mingw32
4958         if enabled shared; then
4959             # Cannot build both shared and static libs when using dllimport.
4960             disable static
4961         fi
4962         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4963         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4964         shlibdir_default="$bindir_default"
4965         SLIBPREF=""
4966         SLIBSUF=".dll"
4967         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4968         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4969         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4970         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4971         SLIB_INSTALL_LINKS=
4972         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4973         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4974         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4975         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4976         enabled x86_64 && objformat="win64" || objformat="win32"
4977         ranlib=:
4978         enable dos_paths
4979         check_ldflags -Wl,--nxcompat,--dynamicbase
4980         # Lets work around some stupidity in binutils.
4981         # ld will strip relocations from executables even though we need them
4982         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4983         # however ld then forgets what the entry point should be (oops) so we
4984         # have to manually (re)set it.
4985         if enabled x86_32; then
4986             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4987         elif enabled x86_64; then
4988             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4989             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4990             # Set image base >4GB for extra entropy with HEASLR
4991             add_ldexeflags -Wl,--image-base,0x140000000
4992             append SHFLAGS -Wl,--image-base,0x180000000
4993         fi
4994         ;;
4995     win32|win64)
4996         disable symver
4997         if enabled shared; then
4998             # Link to the import library instead of the normal static library
4999             # for shared libs.
5000             LD_LIB='%.lib'
5001             # Cannot build both shared and static libs with MSVC or icl.
5002             disable static
5003         fi
5004         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5005         shlibdir_default="$bindir_default"
5006         SLIBPREF=""
5007         SLIBSUF=".dll"
5008         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5009         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5010         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5011         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5012         SLIB_INSTALL_LINKS=
5013         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5014         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5015         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5016         enabled x86_64 && objformat="win64" || objformat="win32"
5017         ranlib=:
5018         enable dos_paths
5019         ;;
5020     cygwin*)
5021         target_os=cygwin
5022         shlibdir_default="$bindir_default"
5023         SLIBPREF="cyg"
5024         SLIBSUF=".dll"
5025         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5026         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5027         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5028         SLIB_INSTALL_LINKS=
5029         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5030         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5031         enabled x86_64 && objformat="win64" || objformat="win32"
5032         enable dos_paths
5033         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5034         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5035         ;;
5036     *-dos|freedos|opendos)
5037         network_extralibs="-lsocket"
5038         objformat="coff"
5039         enable dos_paths
5040         add_cppflags -U__STRICT_ANSI__
5041         ;;
5042     linux)
5043         enable section_data_rel_ro
5044         enabled_any arm aarch64 && enable_weak linux_perf
5045         ;;
5046     irix*)
5047         target_os=irix
5048         ranlib="echo ignoring ranlib"
5049         ;;
5050     os/2*)
5051         strip="lxlite -CS"
5052         striptype=""
5053         objformat="aout"
5054         add_cppflags -D_GNU_SOURCE
5055         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5056         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5057         LIBSUF="_s.a"
5058         SLIBPREF=""
5059         SLIBSUF=".dll"
5060         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5061         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5062         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5063             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5064             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5065             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5066             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5067         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5068             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5069         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5070         SLIB_INSTALL_LINKS=
5071         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5072         enable dos_paths
5073         enable_weak os2threads
5074         ;;
5075     gnu/kfreebsd)
5076         add_cppflags -D_BSD_SOURCE
5077         ;;
5078     gnu)
5079         ;;
5080     qnx)
5081         add_cppflags -D_QNX_SOURCE
5082         network_extralibs="-lsocket"
5083         ;;
5084     symbian)
5085         SLIBSUF=".dll"
5086         enable dos_paths
5087         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5088         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5089         add_ldflags -Wl,--target1-abs,--no-undefined \
5090                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5091                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5092         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5093                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5094                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5095         ;;
5096     minix)
5097         ;;
5098     none)
5099         ;;
5100     *)
5101         die "Unknown OS '$target_os'."
5102         ;;
5103 esac
5104
5105 # test if creating links works
5106 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5107 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5108 mkdir "$link_dest"
5109 $ln_s "$link_dest" "$link_name"
5110 touch "$link_dest/test_file"
5111 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5112     # create link to source path
5113     [ -e src ] && rm src
5114     $ln_s "$source_path" src
5115     source_link=src
5116 else
5117     # creating directory links doesn't work
5118     # fall back to using the full source path
5119     source_link="$source_path"
5120 fi
5121 # cleanup
5122 rm -r "$link_dest"
5123 rm -r "$link_name"
5124
5125 # determine libc flavour
5126
5127 probe_libc(){
5128     pfx=$1
5129     pfx_no_=${pfx%_}
5130     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5131     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5132         eval ${pfx}libc_type=uclibc
5133         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5134     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5135         eval ${pfx}libc_type=glibc
5136         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5137     # MinGW headers can be installed on Cygwin, so check for newlib first.
5138     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5139         eval ${pfx}libc_type=newlib
5140         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5141     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5142     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5143         eval ${pfx}libc_type=mingw64
5144         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5145             add_compat msvcrt/snprintf.o
5146             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5147         fi
5148         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5149         eval test \$${pfx_no_}cc_type = "gcc" &&
5150             add_${pfx}cppflags -D__printf__=__gnu_printf__
5151     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5152          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5153         eval ${pfx}libc_type=mingw32
5154         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5155             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5156             die "ERROR: MinGW32 runtime version must be >= 3.15."
5157         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5158         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5159             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5160         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5161             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5162         eval test \$${pfx_no_}cc_type = "gcc" &&
5163             add_${pfx}cppflags -D__printf__=__gnu_printf__
5164     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5165         eval ${pfx}libc_type=msvcrt
5166         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5167             if [ "$pfx" = host_ ]; then
5168                 add_host_cppflags -Dsnprintf=_snprintf
5169             else
5170                 add_compat strtod.o strtod=avpriv_strtod
5171                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5172                                              _snprintf=avpriv_snprintf  \
5173                                              vsnprintf=avpriv_vsnprintf
5174             fi
5175         fi
5176         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5177         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5178         # 0x601 by default unless something else is set by the user.
5179         # This can easily lead to us detecting functions only present
5180         # in such new versions and producing binaries requiring windows 7.0.
5181         # Therefore explicitly set the default to XP unless the user has
5182         # set something else on the command line.
5183         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5184         # family. For these cases, configure is free to use any functions
5185         # found in the SDK headers by default. (Alternatively, we could force
5186         # _WIN32_WINNT to 0x0602 in that case.)
5187         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5188             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5189 #ifdef WINAPI_FAMILY
5190 #include <winapifamily.h>
5191 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5192 #error not desktop
5193 #endif
5194 #endif
5195 EOF
5196         if [ "$pfx" = "" ]; then
5197             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5198             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5199         fi
5200     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5201         eval ${pfx}libc_type=klibc
5202     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5203         eval ${pfx}libc_type=bionic
5204     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5205         eval ${pfx}libc_type=solaris
5206         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5207     fi
5208     check_${pfx}cc <<EOF
5209 #include <time.h>
5210 void *v = localtime_r;
5211 EOF
5212 test "$?" != 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
5213 #include <time.h>
5214 void *v = localtime_r;
5215 EOF
5216
5217     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5218 }
5219
5220 probe_libc
5221 probe_libc host_
5222
5223 # hacks for compiler/libc/os combinations
5224
5225 case $libc_type in
5226     bionic)
5227         add_compat strtod.o strtod=avpriv_strtod
5228         ;;
5229 esac
5230
5231 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5232     add_cppflags '-I\$(SRC_PATH)/compat/float'
5233
5234 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5235
5236 set_default libdir
5237 : ${shlibdir_default:="$libdir"}
5238 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5239
5240 set_default $PATHS_LIST
5241 set_default nm
5242
5243 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5244
5245 enable_weak_pic() {
5246     disabled pic && return
5247     enable pic
5248     add_cppflags -DPIC
5249     case "$target_os" in
5250     mingw*|cygwin*|win*)
5251         ;;
5252     *)
5253         add_cflags -fPIC
5254         add_asflags -fPIC
5255         ;;
5256     esac
5257 }
5258
5259 enabled pic && enable_weak_pic
5260
5261 check_cc <<EOF || die "Symbol mangling check failed."
5262 int ff_extern;
5263 EOF
5264 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5265 extern_prefix=${sym%%ff_extern*}
5266
5267 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5268
5269 _restrict=
5270 for restrict_keyword in restrict __restrict__ __restrict; do
5271     check_cc <<EOF && _restrict=$restrict_keyword && break
5272 void foo(char * $restrict_keyword p);
5273 EOF
5274 done
5275
5276 check_cc <<EOF && enable pragma_deprecated
5277 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5278 EOF
5279
5280 check_cc <<EOF || die "endian test failed"
5281 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5282 EOF
5283 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5284
5285 check_cc <<EOF && enable const_nan
5286 #include <math.h>
5287 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5288 EOF
5289
5290 if ! enabled ppc64 || enabled bigendian; then
5291     disable vsx
5292 fi
5293
5294 check_gas() {
5295     log "check_gas using '$as' as AS"
5296     # :vararg is used on aarch64, arm and ppc altivec
5297     check_as <<EOF || return 1
5298 .macro m n, y:vararg=0
5299 \n: .int \y
5300 .endm
5301 m x
5302 EOF
5303     # .altmacro is only used in arm asm
5304     ! enabled arm || check_as <<EOF || return 1
5305 .altmacro
5306 EOF
5307     enable gnu_as
5308     return 0
5309 }
5310
5311 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5312     nogas=:
5313     enabled_any arm aarch64 && nogas=die
5314     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5315     as_noop=-v
5316
5317     case $as_type in
5318         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5319         gcc)  gaspp_as_type=gas ;;
5320         *)    gaspp_as_type=$as_type ;;
5321     esac
5322
5323     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5324
5325     test "${as#*gas-preprocessor.pl}" != "$as" ||
5326     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5327         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5328
5329     if ! check_gas ; then
5330         as=${gas:=$as}
5331         check_gas || \
5332             $nogas "GNU assembler not found, install/update gas-preprocessor"
5333     fi
5334
5335     check_as <<EOF && enable as_func
5336 .func test
5337 .endfunc
5338 EOF
5339 fi
5340
5341 check_inline_asm inline_asm_labels '"1:\n"'
5342
5343 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5344
5345 if enabled aarch64; then
5346     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5347     # internal assembler in clang 3.3 does not support this instruction
5348     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5349     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5350
5351     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5352
5353 elif enabled alpha; then
5354
5355     check_cflags -mieee
5356
5357 elif enabled arm; then
5358
5359     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5360
5361     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5362 float func(float a, float b){ return a+b; }
5363 EOF
5364
5365     enabled thumb && check_cflags -mthumb || check_cflags -marm
5366
5367     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5368         enable vfp_args
5369     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5370         enable vfp_args
5371     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5372         case "${cross_prefix:-$cc}" in
5373             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5374             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5375 __asm__ (".eabi_attribute 28, 1");
5376 int main(void) { return 0; }
5377 EOF
5378         esac
5379         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5380     fi
5381
5382     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5383     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5384     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5385     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5386     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5387     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5388     enabled setend  && check_insn setend  'setend be'
5389
5390     [ $target_os = linux ] || [ $target_os = android ] ||
5391         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5392             $ARCH_EXT_LIST_ARM
5393
5394     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5395
5396     check_as <<EOF && enable as_arch_directive
5397 .arch armv7-a
5398 EOF
5399     check_as <<EOF && enable as_fpu_directive
5400 .fpu neon
5401 EOF
5402
5403     # llvm's integrated assembler supports .object_arch from llvm 3.5
5404     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5405         check_as <<EOF && enable as_object_arch
5406 .object_arch armv4
5407 EOF
5408
5409     # MS armasm fails to assemble our PIC constructs
5410     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5411
5412 elif enabled mips; then
5413
5414     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5415     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5416     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5417
5418     # Enable minimum ISA based on selected options
5419     if enabled mips64; then
5420         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5421         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5422         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5423     else
5424         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5425         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5426         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5427         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5428     fi
5429
5430     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5431     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5432     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5433     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5434     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5435
5436     if enabled bigendian && enabled msa; then
5437         disable msa
5438     fi
5439
5440 elif enabled parisc; then
5441
5442     if enabled gcc; then
5443         case $($cc -dumpversion) in
5444             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5445         esac
5446     fi
5447
5448 elif enabled ppc; then
5449
5450     enable local_aligned
5451
5452     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5453     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5454     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5455     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5456
5457     if enabled altivec; then
5458         check_cflags -maltivec -mabi=altivec
5459
5460         # check if our compiler supports Motorola AltiVec C API
5461         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5462                                  vector signed int v2 = (vector signed int) { 1 };
5463                                  v1 = vec_add(v1, v2);" ||
5464             disable altivec
5465
5466         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5467     fi
5468
5469     if enabled vsx; then
5470         check_cflags -mvsx &&
5471         check_code cc altivec.h "int v[4] = { 0 };
5472                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5473             disable vsx
5474     fi
5475
5476     if enabled power8; then
5477         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5478     fi
5479
5480 elif enabled x86; then
5481
5482     check_builtin rdtsc    intrin.h   "__rdtsc()"
5483     check_builtin mm_empty mmintrin.h "_mm_empty()"
5484
5485     enable local_aligned
5486
5487     # check whether EBP is available on x86
5488     # As 'i' is stored on the stack, this program will crash
5489     # if the base pointer is used to access it because the
5490     # base pointer is cleared in the inline assembly code.
5491     check_exec_crash <<EOF && enable ebp_available
5492 volatile int i=0;
5493 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5494 return i;
5495 EOF
5496
5497     # check whether EBX is available on x86
5498     check_inline_asm ebx_available '""::"b"(0)' &&
5499         check_inline_asm ebx_available '"":::"%ebx"'
5500
5501     # check whether xmm clobbers are supported
5502     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5503
5504     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5505         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5506
5507     # check whether binutils is new enough to compile SSSE3/MMXEXT
5508     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5509     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5510
5511     probe_x86asm(){
5512         x86asmexe_probe=$1
5513         if check_cmd $x86asmexe_probe -v; then
5514             x86asmexe=$x86asmexe_probe
5515             x86asm_type=nasm
5516             x86asm_debug="-g -F dwarf"
5517             X86ASMDEP=
5518             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5519         elif check_cmd $x86asmexe_probe --version; then
5520             x86asmexe=$x86asmexe_probe
5521             x86asm_type=yasm
5522             x86asm_debug="-g dwarf2"
5523             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5524             X86ASM_DEPFLAGS=
5525         fi
5526         check_x86asm "movbe ecx, [5]" && enable x86asm
5527     }
5528
5529     if ! disabled_any asm mmx x86asm; then
5530         disable x86asm
5531         for program in $x86asmexe nasm yasm; do
5532             probe_x86asm $program && break
5533         done
5534         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5535         X86ASMFLAGS="-f $objformat"
5536         enabled pic               && append X86ASMFLAGS "-DPIC"
5537         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5538         case "$objformat" in
5539             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5540         esac
5541
5542         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5543         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5544         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5545         check_x86asm "CPU amdnop" || disable cpunop
5546     fi
5547
5548     case "$cpu" in
5549         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5550             disable fast_clz
5551         ;;
5552     esac
5553
5554 fi
5555
5556 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5557
5558 check_ldflags -Wl,--as-needed
5559 check_ldflags -Wl,-z,noexecstack
5560
5561 if ! disabled network; then
5562     check_func getaddrinfo $network_extralibs
5563     check_func inet_aton $network_extralibs
5564
5565     check_type netdb.h "struct addrinfo"
5566     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5567     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5568     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5569     check_type poll.h "struct pollfd"
5570     check_type netinet/sctp.h "struct sctp_event_subscribe"
5571     check_struct "sys/socket.h" "struct msghdr" msg_flags
5572     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5573     check_type netinet/in.h "struct sockaddr_in6"
5574     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5575     check_type "sys/types.h sys/socket.h" socklen_t
5576
5577     # Prefer arpa/inet.h over winsock2
5578     if check_header arpa/inet.h ; then
5579         check_func closesocket
5580     elif check_header winsock2.h ; then
5581         check_func_headers winsock2.h closesocket -lws2 &&
5582             network_extralibs="-lws2" ||
5583         { check_func_headers winsock2.h closesocket -lws2_32 &&
5584             network_extralibs="-lws2_32"; } || disable winsock2_h network
5585         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5586
5587         check_type ws2tcpip.h socklen_t
5588         check_type ws2tcpip.h "struct addrinfo"
5589         check_type ws2tcpip.h "struct group_source_req"
5590         check_type ws2tcpip.h "struct ip_mreq_source"
5591         check_type ws2tcpip.h "struct ipv6_mreq"
5592         check_type winsock2.h "struct pollfd"
5593         check_struct winsock2.h "struct sockaddr" sa_len
5594         check_type ws2tcpip.h "struct sockaddr_in6"
5595         check_type ws2tcpip.h "struct sockaddr_storage"
5596     else
5597         disable network
5598     fi
5599 fi
5600
5601 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5602 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5603 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5604 check_builtin sarestart signal.h "SA_RESTART"
5605 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5606 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5607 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5608 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5609
5610 case "$custom_allocator" in
5611     jemalloc)
5612         # jemalloc by default does not use a prefix
5613         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5614     ;;
5615     tcmalloc)
5616         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5617         malloc_prefix=tc_
5618     ;;
5619 esac
5620
5621 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5622 check_func  ${malloc_prefix}memalign            && enable memalign
5623 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5624
5625 check_func  access
5626 check_func_headers stdlib.h arc4random
5627 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5628 check_func  fcntl
5629 check_func  fork
5630 check_func  gethrtime
5631 check_func  getopt
5632 check_func  getrusage
5633 check_func  gettimeofday
5634 check_func  isatty
5635 check_func  mkstemp
5636 check_func  mmap
5637 check_func  mprotect
5638 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5639 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5640 check_func  sched_getaffinity
5641 check_func  setrlimit
5642 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5643 check_func  strerror_r
5644 check_func  sysconf
5645 check_func  sysctl
5646 check_func  usleep
5647
5648 check_func_headers conio.h kbhit
5649 check_func_headers io.h setmode
5650 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5651 check_func_headers mach/mach_time.h mach_absolute_time
5652 check_func_headers stdlib.h getenv
5653 check_func_headers sys/stat.h lstat
5654
5655 check_func_headers windows.h GetProcessAffinityMask
5656 check_func_headers windows.h GetProcessTimes
5657 check_func_headers windows.h GetSystemTimeAsFileTime
5658 check_func_headers windows.h LoadLibrary
5659 check_func_headers windows.h MapViewOfFile
5660 check_func_headers windows.h PeekNamedPipe
5661 check_func_headers windows.h SetConsoleTextAttribute
5662 check_func_headers windows.h SetConsoleCtrlHandler
5663 check_func_headers windows.h Sleep
5664 check_func_headers windows.h VirtualAlloc
5665 check_struct windows.h "CONDITION_VARIABLE" Ptr
5666 check_func_headers glob.h glob
5667 enabled xlib &&
5668     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5669
5670 check_header direct.h
5671 check_header dirent.h
5672 check_header dxgidebug.h
5673 check_header dxva.h
5674 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5675 check_header io.h
5676 check_header libcrystalhd/libcrystalhd_if.h
5677 check_header malloc.h
5678 check_header net/udplite.h
5679 check_header poll.h
5680 check_header sys/param.h
5681 check_header sys/resource.h
5682 check_header sys/select.h
5683 check_header sys/time.h
5684 check_header sys/un.h
5685 check_header termios.h
5686 check_header unistd.h
5687 check_header valgrind/valgrind.h
5688 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5689 check_header windows.h
5690 check_header X11/extensions/XvMClib.h
5691 check_header asm/types.h
5692
5693 # it seems there are versions of clang in some distros that try to use the
5694 # gcc headers, which explodes for stdatomic
5695 # so we also check that atomics actually work here
5696 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5697
5698 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5699 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5700 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5701 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5702 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5703
5704 enabled appkit       && check_apple_framework AppKit
5705 enabled audiotoolbox && check_apple_framework AudioToolbox
5706 enabled avfoundation && check_apple_framework AVFoundation
5707 enabled coreimage    && check_apple_framework CoreImage
5708 enabled videotoolbox && check_apple_framework VideoToolbox
5709
5710 check_apple_framework CoreFoundation
5711 check_apple_framework CoreMedia
5712 check_apple_framework CoreVideo
5713
5714 enabled avfoundation && {
5715     disable coregraphics applicationservices
5716     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5717     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5718
5719 enabled videotoolbox && {
5720     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5721     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5722 }
5723
5724 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5725
5726 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5727 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5728 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5729 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5730 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5731
5732 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5733 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5734 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5735 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5736 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5737 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5738 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5739 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5740 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5741 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5742
5743 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5744
5745 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5746
5747 if ! disabled w32threads && ! enabled pthreads; then
5748     check_func_headers "windows.h process.h" _beginthreadex &&
5749         enable w32threads || disable w32threads
5750     if ! enabled w32threads && enabled winrt; then
5751         check_func_headers "windows.h" CreateThread &&
5752             enable w32threads || disable w32threads
5753     fi
5754 fi
5755
5756 # check for some common methods of building with pthread support
5757 # do this before the optional library checks as some of them require pthreads
5758 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5759     if check_lib pthreads pthread.h pthread_join   -pthread &&
5760        check_lib pthreads pthread.h pthread_create -pthread; then
5761         add_cflags -pthread
5762     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5763          check_lib pthreads pthread.h pthread_create -pthreads; then
5764         add_cflags -pthreads
5765     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5766          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5767         add_cflags -ldl -pthread
5768     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5769          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5770         :
5771     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5772          check_lib pthreads pthread.h pthread_create -lpthread; then
5773         :
5774     elif check_func pthread_join && check_func pthread_create; then
5775         enable pthreads
5776     fi
5777     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5778
5779     if enabled pthreads; then
5780         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5781         check_func pthread_cancel $pthreads_extralibs
5782     fi
5783 fi
5784
5785 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5786 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5787 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5788
5789 # On some systems dynamic loading requires no extra linker flags
5790 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5791
5792 check_lib libm math.h sin -lm
5793
5794 atan2f_args=2
5795 copysign_args=2
5796 hypot_args=2
5797 ldexpf_args=2
5798 powf_args=2
5799
5800 for func in $MATH_FUNCS; do
5801     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5802 done
5803
5804 for func in $COMPLEX_FUNCS; do
5805     eval check_complexfunc $func \${${func}_args:-1}
5806 done
5807
5808 # these are off by default, so fail if requested and not available
5809 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5810 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5811 enabled decklink          && { require_header DeckLinkAPI.h &&
5812                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5813 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5814 enabled frei0r            && require_header frei0r.h
5815 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5816 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5817 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5818 enabled ladspa            && require_header ladspa.h
5819 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5820 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5821 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5822 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5823 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5824 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5825                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5826                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5827 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5828 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5829 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5830 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5831                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5832                                  warn "using libfdk without pkg-config"; } }
5833 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"
5834 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5835 enabled fontconfig        && enable libfontconfig
5836 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5837 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5838 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5839 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5840                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5841 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5842                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5843                                done || die "ERROR: libgsm not found"; }
5844 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5845 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5846 # While it may appear that require is being used as a pkg-config
5847 # fallback for libmfx, it is actually being used to detect a different
5848 # installation route altogether.  If libmfx is installed via the Intel
5849 # Media SDK or Intel Media Server Studio, these don't come with
5850 # pkg-config support.  Instead, users should make sure that the build
5851 # can find the libraries and headers through other means.
5852 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5853                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5854 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5855 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5856 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5857 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5858                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5859                                die "ERROR: libnpp not found"; }
5860 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5861 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5862 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5863                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5864                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5865                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5866 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5867 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5868                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5869 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5870 enabled libopus           && {
5871     enabled libopus_decoder && {
5872         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5873     }
5874     enabled libopus_encoder && {
5875         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5876     }
5877 }
5878 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5879 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5880 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5881 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5882 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5883 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5884                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5885 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5886 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5887 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5888 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5889 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5890 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5891 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5892                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5893                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5894 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5895 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5896 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5897 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5898 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5899                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5900
5901 enabled libvpx            && {
5902     enabled libvpx_vp8_decoder && {
5903         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5904             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5905                 die "ERROR: libvpx decoder version must be >=1.4.0";
5906     }
5907     enabled libvpx_vp8_encoder && {
5908         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5909             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5910                 die "ERROR: libvpx encoder version must be >=1.4.0";
5911     }
5912     enabled libvpx_vp9_decoder && {
5913         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5914             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5915     }
5916     enabled libvpx_vp9_encoder && {
5917         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5918             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5919     }
5920     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5921         die "libvpx enabled but no supported decoders found"
5922     fi
5923 }
5924
5925 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5926 enabled libwebp           && {
5927     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5928     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5929 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5930                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5931                                  warn "using libx264 without pkg-config"; } } &&
5932                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5933                              { check_cpp_condition x264.h "X264_MPEG2" &&
5934                                enable libx262; }
5935 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5936                              require_cpp_condition x265.h "X265_BUILD >= 68"
5937 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5938 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5939 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.6.2" zimg.h zimg_get_api_version
5940 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5941 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5942                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5943                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5944 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5945 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5946 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5947                                { ! enabled cross_compile &&
5948                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5949                                  add_ldflags -L/opt/vc/lib/ &&
5950                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5951                                die "ERROR: mmal not found" &&
5952                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5953 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5954                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5955                                die "ERROR: openal not found"; } &&
5956                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5957                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5958 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5959                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5960                                die "ERROR: opencl not found"; } &&
5961                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5962                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5963                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5964 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5965                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5966                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5967                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5968                                die "ERROR: opengl not found."
5969                              }
5970 enabled omx               && require_header OMX_Core.h
5971 enabled omx_rpi           && { check_header OMX_Core.h ||
5972                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5973                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5974 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5975                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5976                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5977                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5978                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5979                                die "ERROR: openssl not found"; }
5980 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5981                                  die "ERROR : Rockchip MPP was not found."; } &&
5982                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5983                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5984                                { enabled libdrm ||
5985                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5986                              }
5987
5988 if enabled gcrypt; then
5989     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5990     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5991         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5992         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5993         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5994             die "ERROR: gcrypt not found"
5995         add_cflags $gcrypt_cflags
5996     else
5997         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5998     fi
5999 fi
6000
6001 if enabled sdl2; then
6002     SDL2_CONFIG="${cross_prefix}sdl2-config"
6003     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6004         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6005             disable sdl2
6006     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6007         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6008         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6009         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6010         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6011         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6012             enable sdl2
6013     fi
6014     if test $target_os = "mingw32"; then
6015         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6016     fi
6017 fi
6018
6019 if enabled decklink; then
6020     case $target_os in
6021         mingw32*|mingw64*|win32|win64)
6022             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6023             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6024             ;;
6025     esac
6026 fi
6027
6028 enabled securetransport &&
6029     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6030     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6031         disable securetransport
6032
6033 enabled securetransport &&
6034     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6035
6036 enabled schannel &&
6037     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6038     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6039     schannel_extralibs="-lsecur32" ||
6040         disable schannel
6041
6042 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6043 enabled makeinfo \
6044     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6045     && enable makeinfo_html || disable makeinfo_html
6046 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6047 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6048 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6049 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6050
6051 # check V4L2 codecs available in the API
6052 check_header linux/fb.h
6053 check_header linux/videodev2.h
6054 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6055 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6056 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6057 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6058 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6059 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6060 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6061 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6062 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6063 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6064 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6065
6066 check_header sys/videoio.h
6067 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6068
6069 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6070 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6071 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6072 # w32api 3.12 had it defined wrong
6073 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6074
6075 check_type "dshow.h" IBaseFilter
6076
6077 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6078 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6079     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6080     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6081     check_header "dev/ic/bt8xx.h"
6082
6083 if check_struct sys/soundcard.h audio_buf_info bytes; then
6084     enable_sanitized sys/soundcard.h
6085 else
6086     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6087     #include <sys/soundcard.h>
6088     audio_buf_info abc;
6089 EOF
6090 fi
6091
6092 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6093     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6094
6095 enabled libjack &&
6096     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6097
6098 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6099
6100 if enabled libcdio; then
6101     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6102     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6103     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6104     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6105     die "ERROR: No usable libcdio/cdparanoia found"
6106 fi
6107
6108 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6109     disable libxcb_shm libxcb_shape libxcb_xfixes
6110
6111 if enabled libxcb; then
6112     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6113     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6114     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6115 fi
6116
6117 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6118
6119 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6120 # the desktop api partition
6121 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6122 #ifdef WINAPI_FAMILY
6123 #include <winapifamily.h>
6124 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6125 #error desktop, not uwp
6126 #else
6127 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6128 #endif
6129 #else
6130 #error no family set
6131 #endif
6132 EOF
6133
6134 enabled vaapi &&
6135     check_lib vaapi va/va.h vaInitialize -lva
6136
6137 enabled vaapi &&
6138     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6139     disable vaapi
6140
6141 enabled vaapi &&
6142     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6143
6144 enabled vaapi &&
6145     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6146
6147 enabled vaapi &&
6148     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6149     enable vaapi_1
6150
6151 if enabled_all opencl vaapi ; then
6152     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6153         enable opencl_vaapi_beignet
6154     if enabled libmfx ; then
6155         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6156             enable opencl_vaapi_intel_media
6157     fi
6158 fi
6159
6160 if enabled_all opencl dxva2 ; then
6161     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6162         enable opencl_dxva2
6163 fi
6164
6165 if enabled_all opencl d3d11va ; then
6166     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6167         enable opencl_d3d11
6168 fi
6169
6170 if enabled_all opencl libdrm ; then
6171     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6172         enable opencl_drm_arm
6173 fi
6174
6175 enabled vdpau &&
6176     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6177     disable vdpau
6178
6179 enabled vdpau &&
6180     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6181
6182 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6183
6184 if enabled x86; then
6185     case $target_os in
6186         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6187             ;;
6188         *)
6189             disable cuda cuvid nvdec nvenc
6190             ;;
6191     esac
6192 else
6193     disable cuda cuvid nvdec nvenc
6194 fi
6195
6196 enabled nvenc &&
6197     check_cc -I$source_path <<EOF || disable nvenc
6198 #include "compat/nvenc/nvEncodeAPI.h"
6199 NV_ENCODE_API_FUNCTION_LIST flist;
6200 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6201 int main(void) { return 0; }
6202 EOF
6203
6204 enabled amf &&
6205     check_cpp_condition "AMF/core/Version.h" \
6206         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001" ||
6207     disable amf
6208
6209 # Funny iconv installations are not unusual, so check it after all flags have been set
6210 if enabled libc_iconv; then
6211     check_func_headers iconv.h iconv
6212 elif enabled iconv; then
6213     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6214 fi
6215
6216 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6217
6218 # add some useful compiler flags if supported
6219 check_cflags -Wdeclaration-after-statement
6220 check_cflags -Wall
6221 check_cflags -Wdisabled-optimization
6222 check_cflags -Wpointer-arith
6223 check_cflags -Wredundant-decls
6224 check_cflags -Wwrite-strings
6225 check_cflags -Wtype-limits
6226 check_cflags -Wundef
6227 check_cflags -Wmissing-prototypes
6228 check_cflags -Wno-pointer-to-int-cast
6229 check_cflags -Wstrict-prototypes
6230 check_cflags -Wempty-body
6231
6232 if enabled extra_warnings; then
6233     check_cflags -Wcast-qual
6234     check_cflags -Wextra
6235     check_cflags -Wpedantic
6236 fi
6237
6238 check_disable_warning(){
6239     warning_flag=-W${1#-Wno-}
6240     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6241 }
6242
6243 test_cflags -Werror=unused-command-line-argument &&
6244     append unknown_warning_flags "-Werror=unused-command-line-argument"
6245 test_cflags -Werror=unknown-warning-option &&
6246     append unknown_warning_flags "-Werror=unknown-warning-option"
6247
6248 check_disable_warning -Wno-parentheses
6249 check_disable_warning -Wno-switch
6250 check_disable_warning -Wno-format-zero-length
6251 check_disable_warning -Wno-pointer-sign
6252 check_disable_warning -Wno-unused-const-variable
6253 check_disable_warning -Wno-bool-operation
6254
6255 check_disable_warning_headers(){
6256     warning_flag=-W${1#-Wno-}
6257     test_cflags $warning_flag && add_cflags_headers $1
6258 }
6259
6260 check_disable_warning_headers -Wno-deprecated-declarations
6261 check_disable_warning_headers -Wno-unused-variable
6262
6263 check_cc <<EOF && enable blocks_extension
6264 void (^block)(void);
6265 EOF
6266
6267 # add some linker flags
6268 check_ldflags -Wl,--warn-common
6269 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6270 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6271 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6272
6273 # add some strip flags
6274 check_stripflags -x
6275
6276 enabled neon_clobber_test &&
6277     check_ldflags -Wl,--wrap,avcodec_open2              \
6278                   -Wl,--wrap,avcodec_decode_audio4      \
6279                   -Wl,--wrap,avcodec_decode_video2      \
6280                   -Wl,--wrap,avcodec_decode_subtitle2   \
6281                   -Wl,--wrap,avcodec_encode_audio2      \
6282                   -Wl,--wrap,avcodec_encode_video2      \
6283                   -Wl,--wrap,avcodec_encode_subtitle    \
6284                   -Wl,--wrap,avcodec_send_packet        \
6285                   -Wl,--wrap,avcodec_receive_packet     \
6286                   -Wl,--wrap,avcodec_send_frame         \
6287                   -Wl,--wrap,avcodec_receive_frame      \
6288                   -Wl,--wrap,swr_convert                \
6289                   -Wl,--wrap,avresample_convert ||
6290     disable neon_clobber_test
6291
6292 enabled xmm_clobber_test &&
6293     check_ldflags -Wl,--wrap,avcodec_open2              \
6294                   -Wl,--wrap,avcodec_decode_audio4      \
6295                   -Wl,--wrap,avcodec_decode_video2      \
6296                   -Wl,--wrap,avcodec_decode_subtitle2   \
6297                   -Wl,--wrap,avcodec_encode_audio2      \
6298                   -Wl,--wrap,avcodec_encode_video2      \
6299                   -Wl,--wrap,avcodec_encode_subtitle    \
6300                   -Wl,--wrap,avcodec_send_packet        \
6301                   -Wl,--wrap,avcodec_receive_packet     \
6302                   -Wl,--wrap,avcodec_send_frame         \
6303                   -Wl,--wrap,avcodec_receive_frame      \
6304                   -Wl,--wrap,swr_convert                \
6305                   -Wl,--wrap,avresample_convert         \
6306                   -Wl,--wrap,sws_scale ||
6307     disable xmm_clobber_test
6308
6309 check_ld "cc" <<EOF && enable proper_dce
6310 extern const int array[512];
6311 static inline int func(void) { return array[0]; }
6312 int main(void) { return 0; }
6313 EOF
6314
6315 if enabled proper_dce; then
6316     echo "X { local: *; };" > $TMPV
6317     if test_ldflags -Wl,${version_script},$TMPV; then
6318         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6319         quotes='""'
6320         check_cc <<EOF && enable symver_asm_label
6321 void ff_foo(void) __asm__ ("av_foo@VERSION");
6322 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6323 EOF
6324         check_cc <<EOF && enable symver_gnu_asm
6325 __asm__(".symver ff_foo,av_foo@VERSION");
6326 void ff_foo(void) {}
6327 EOF
6328     fi
6329 fi
6330
6331 if [ -z "$optflags" ]; then
6332     if enabled small; then
6333         optflags=$cflags_size
6334     elif enabled optimizations; then
6335         optflags=$cflags_speed
6336     else
6337         optflags=$cflags_noopt
6338     fi
6339 fi
6340
6341 if [ -z "$nvccflags" ]; then
6342     nvccflags=$nvccflags_default
6343 fi
6344
6345 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6346     nvccflags="$nvccflags -m64"
6347 else
6348     nvccflags="$nvccflags -m32"
6349 fi
6350
6351 check_optflags(){
6352     check_cflags "$@"
6353     enabled lto && check_ldflags "$@"
6354 }
6355
6356 check_optflags $optflags
6357 check_optflags -fno-math-errno
6358 check_optflags -fno-signed-zeros
6359
6360 if enabled lto; then
6361     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6362     check_cflags  -flto
6363     check_ldflags -flto $cpuflags
6364     disable inline_asm_direct_symbol_refs
6365 fi
6366
6367 enabled ftrapv && check_cflags -ftrapv
6368
6369 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6370 int x;
6371 EOF
6372
6373
6374 if enabled icc; then
6375     # Just warnings, no remarks
6376     check_cflags -w1
6377     # -wd: Disable following warnings
6378     # 144, 167, 556: -Wno-pointer-sign
6379     # 188: enumerated type mixed with another type
6380     # 1292: attribute "foo" ignored
6381     # 1419: external declaration in primary source file
6382     # 10006: ignoring unknown option -fno-signed-zeros
6383     # 10148: ignoring unknown option -Wno-parentheses
6384     # 10156: ignoring option '-W'; no argument required
6385     # 13200: No EMMS instruction before call to function
6386     # 13203: No EMMS instruction before return from function
6387     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6388     # 11030: Warning unknown option --as-needed
6389     # 10156: ignoring option '-export'; no argument required
6390     check_ldflags -wd10156,11030
6391     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6392     enable ebp_available
6393     # The test above does not test linking
6394     enabled lto && disable symver_asm_label
6395     if enabled x86_32; then
6396         icc_version=$($cc -dumpversion)
6397         test ${icc_version%%.*} -ge 11 &&
6398             check_cflags -falign-stack=maintain-16-byte ||
6399             disable aligned_stack
6400     fi
6401 elif enabled gcc; then
6402     check_optflags -fno-tree-vectorize
6403     check_cflags -Werror=format-security
6404     check_cflags -Werror=implicit-function-declaration
6405     check_cflags -Werror=missing-prototypes
6406     check_cflags -Werror=return-type
6407     check_cflags -Werror=vla
6408     check_cflags -Wformat
6409     check_cflags -fdiagnostics-color=auto
6410     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6411 elif enabled llvm_gcc; then
6412     check_cflags -mllvm -stack-alignment=16
6413 elif enabled clang; then
6414     check_cflags -mllvm -stack-alignment=16
6415     check_cflags -mstack-alignment=16
6416     check_cflags -Qunused-arguments
6417     check_cflags -Werror=implicit-function-declaration
6418     check_cflags -Werror=missing-prototypes
6419     check_cflags -Werror=return-type
6420 elif enabled cparser; then
6421     add_cflags -Wno-missing-variable-declarations
6422     add_cflags -Wno-empty-statement
6423 elif enabled armcc; then
6424     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6425     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6426     # 2523: use of inline assembly is deprecated
6427     add_cflags -W${armcc_opt},--diag_suppress=2523
6428     add_cflags -W${armcc_opt},--diag_suppress=1207
6429     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6430     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6431     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6432     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6433 elif enabled pathscale; then
6434     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6435     disable inline_asm
6436 elif enabled_any msvc icl; then
6437     enabled x86_32 && disable aligned_stack
6438     enabled_all x86_32 debug && add_cflags -Oy-
6439     enabled debug && add_ldflags -debug
6440     enable pragma_deprecated
6441     if enabled icl; then
6442         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6443         # (correctly) on icl 13.x.
6444         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6445             add_cflags -Qansi-alias
6446         # Some inline asm is not compilable in debug
6447         if enabled debug; then
6448             disable ebp_available
6449             disable ebx_available
6450         fi
6451     fi
6452     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6453     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6454     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6455     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6456     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6457     # MSVC 2013 and newer can handle it fine.
6458     # If this declspec fails, force including stdlib.h before the restrict redefinition
6459     # happens in config.h.
6460     if [ $_restrict != restrict ]; then
6461         check_cc <<EOF || add_cflags -FIstdlib.h
6462 __declspec($_restrict) void* foo(int);
6463 EOF
6464     fi
6465     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6466     # Issue has been fixed in MSVC v19.00.24218.
6467     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6468         check_cflags -d2SSAOptimizer-
6469     # enable utf-8 source processing on VS2015 U2 and newer
6470     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6471         add_cflags -utf-8
6472 fi
6473
6474 for pfx in "" host_; do
6475     varname=${pfx%_}cc_type
6476     eval "type=\$$varname"
6477     if [ "$type" = "msvc" ]; then
6478         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6479 static inline int foo(int a) { return a; }
6480 EOF
6481     fi
6482 done
6483
6484 case $as_type in
6485     clang)
6486         add_asflags -Qunused-arguments
6487     ;;
6488 esac
6489
6490 case $ld_type in
6491     clang)
6492         check_ldflags -Qunused-arguments
6493     ;;
6494 esac
6495
6496 enable frame_thread_encoder
6497
6498 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6499
6500 check_deps $CONFIG_LIST       \
6501            $CONFIG_EXTRA      \
6502            $HAVE_LIST         \
6503            $ALL_COMPONENTS    \
6504
6505 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"
6506
6507
6508 if test $target_os = "haiku"; then
6509     disable memalign
6510     disable posix_memalign
6511 fi
6512
6513 flatten_extralibs(){
6514     unset nested_entries
6515     list_name=$1
6516     eval list=\$${1}
6517     for entry in $list; do
6518         entry_copy=$entry
6519         resolve entry_copy
6520         append nested_entries $(filter '*_extralibs' $entry_copy)
6521         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6522         eval $entry="\$flat_entries"
6523     done
6524     append $list_name "$nested_entries"
6525
6526     resolve nested_entries
6527     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6528         flatten_extralibs $list_name
6529     fi
6530 }
6531
6532 flatten_extralibs_wrapper(){
6533     list_name=$1
6534     flatten_extralibs $list_name
6535     unique $list_name
6536     resolve $list_name
6537     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6538     eval printf \''%s'\' \""\$$list_name"\"
6539 }
6540
6541 for linkunit in $LIBRARY_LIST; do
6542     unset current_extralibs
6543     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6544     for comp in ${components}; do
6545         enabled $comp || continue
6546         comp_extralibs="${comp}_extralibs"
6547         append current_extralibs $comp_extralibs
6548     done
6549     eval prepend ${linkunit}_extralibs $current_extralibs
6550 done
6551
6552 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6553     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6554 done
6555
6556 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6557
6558 for thread in $THREADS_LIST; do
6559     if enabled $thread; then
6560         test -n "$thread_type" &&
6561             die "ERROR: Only one thread type must be selected." ||
6562             thread_type="$thread"
6563     fi
6564 done
6565
6566 if disabled stdatomic; then
6567     if enabled atomics_gcc; then
6568         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6569     elif enabled atomics_win32; then
6570         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6571     elif enabled atomics_suncc; then
6572         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6573     elif enabled pthreads; then
6574         add_compat atomics/pthread/stdatomic.o
6575         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6576     else
6577         enabled threads && die "Threading is enabled, but no atomics are available"
6578         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6579     fi
6580 fi
6581
6582 # Check if requested libraries were found.
6583 for lib in $AUTODETECT_LIBS; do
6584     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6585 done
6586
6587 enabled zlib && add_cppflags -DZLIB_CONST
6588
6589 # conditional library dependencies, in linking order
6590 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6591 enabled afir_filter         && prepend avfilter_deps "avcodec"
6592 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6593 enabled aresample_filter    && prepend avfilter_deps "swresample"
6594 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6595 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6596 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6597 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6598 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6599 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6600 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6601 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6602 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6603 enabled pan_filter          && prepend avfilter_deps "swresample"
6604 enabled pp_filter           && prepend avfilter_deps "postproc"
6605 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6606 enabled resample_filter && prepend avfilter_deps "avresample"
6607 enabled sab_filter          && prepend avfilter_deps "swscale"
6608 enabled scale_filter    && prepend avfilter_deps "swscale"
6609 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6610 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6611 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6612 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6613 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6614 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6615 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6616 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6617 enabled spp_filter          && prepend avfilter_deps "avcodec"
6618 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6619 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6620 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6621
6622 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6623
6624 #FIXME
6625 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6626
6627 enabled opus_decoder    && prepend avcodec_deps "swresample"
6628
6629 expand_deps(){
6630     lib_deps=${1}_deps
6631     eval "deps=\$$lib_deps"
6632     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6633     unique $lib_deps
6634 }
6635
6636 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6637 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6638
6639 map 'expand_deps $v' $LIBRARY_LIST
6640
6641 license="LGPL version 2.1 or later"
6642 if enabled nonfree; then
6643     license="nonfree and unredistributable"
6644 elif enabled gplv3; then
6645     license="GPL version 3 or later"
6646 elif enabled lgplv3; then
6647     license="LGPL version 3 or later"
6648 elif enabled gpl; then
6649     license="GPL version 2 or later"
6650 fi
6651
6652 if test "$quiet" != "yes"; then
6653
6654 echo "install prefix            $prefix"
6655 echo "source path               $source_path"
6656 echo "C compiler                $cc"
6657 echo "C library                 $libc_type"
6658 if test "$host_cc" != "$cc"; then
6659     echo "host C compiler           $host_cc"
6660     echo "host C library            $host_libc_type"
6661 fi
6662 echo "ARCH                      $arch ($cpu)"
6663 if test "$build_suffix" != ""; then
6664     echo "build suffix              $build_suffix"
6665 fi
6666 if test "$progs_suffix" != ""; then
6667     echo "progs suffix              $progs_suffix"
6668 fi
6669 if test "$extra_version" != ""; then
6670     echo "version string suffix     $extra_version"
6671 fi
6672 echo "big-endian                ${bigendian-no}"
6673 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6674 if enabled x86; then
6675     echo "standalone assembly       ${x86asm-no}"
6676     echo "x86 assembler             ${x86asmexe}"
6677     echo "MMX enabled               ${mmx-no}"
6678     echo "MMXEXT enabled            ${mmxext-no}"
6679     echo "3DNow! enabled            ${amd3dnow-no}"
6680     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6681     echo "SSE enabled               ${sse-no}"
6682     echo "SSSE3 enabled             ${ssse3-no}"
6683     echo "AESNI enabled             ${aesni-no}"
6684     echo "AVX enabled               ${avx-no}"
6685     echo "AVX2 enabled              ${avx2-no}"
6686     echo "XOP enabled               ${xop-no}"
6687     echo "FMA3 enabled              ${fma3-no}"
6688     echo "FMA4 enabled              ${fma4-no}"
6689     echo "i686 features enabled     ${i686-no}"
6690     echo "CMOV is fast              ${fast_cmov-no}"
6691     echo "EBX available             ${ebx_available-no}"
6692     echo "EBP available             ${ebp_available-no}"
6693 fi
6694 if enabled aarch64; then
6695     echo "NEON enabled              ${neon-no}"
6696     echo "VFP enabled               ${vfp-no}"
6697 fi
6698 if enabled arm; then
6699     echo "ARMv5TE enabled           ${armv5te-no}"
6700     echo "ARMv6 enabled             ${armv6-no}"
6701     echo "ARMv6T2 enabled           ${armv6t2-no}"
6702     echo "VFP enabled               ${vfp-no}"
6703     echo "NEON enabled              ${neon-no}"
6704     echo "THUMB enabled             ${thumb-no}"
6705 fi
6706 if enabled mips; then
6707     echo "MIPS FPU enabled          ${mipsfpu-no}"
6708     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6709     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6710     echo "MIPS MSA enabled          ${msa-no}"
6711     echo "LOONGSON MMI enabled      ${mmi-no}"
6712 fi
6713 if enabled ppc; then
6714     echo "AltiVec enabled           ${altivec-no}"
6715     echo "VSX enabled               ${vsx-no}"
6716     echo "POWER8 enabled            ${power8-no}"
6717     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6718     echo "dcbzl available           ${dcbzl-no}"
6719 fi
6720 echo "debug symbols             ${debug-no}"
6721 echo "strip symbols             ${stripping-no}"
6722 echo "optimize for size         ${small-no}"
6723 echo "optimizations             ${optimizations-no}"
6724 echo "static                    ${static-no}"
6725 echo "shared                    ${shared-no}"
6726 echo "postprocessing support    ${postproc-no}"
6727 echo "network support           ${network-no}"
6728 echo "threading support         ${thread_type-no}"
6729 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6730 echo "texi2html enabled         ${texi2html-no}"
6731 echo "perl enabled              ${perl-no}"
6732 echo "pod2man enabled           ${pod2man-no}"
6733 echo "makeinfo enabled          ${makeinfo-no}"
6734 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6735 test -n "$random_seed" &&
6736     echo "random seed               ${random_seed}"
6737 echo
6738
6739 echo "External libraries:"
6740 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6741 echo
6742
6743 echo "External libraries providing hardware acceleration:"
6744 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6745 echo
6746
6747 echo "Libraries:"
6748 print_enabled '' $LIBRARY_LIST | print_in_columns
6749 echo
6750
6751 echo "Programs:"
6752 print_enabled '' $PROGRAM_LIST | print_in_columns
6753 echo
6754
6755 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6756     echo "Enabled ${type}s:"
6757     eval list=\$$(toupper $type)_LIST
6758     print_enabled '_*' $list | print_in_columns
6759     echo
6760 done
6761
6762 if test -n "$ignore_tests"; then
6763     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6764     echo "Ignored FATE tests:"
6765     echo $ignore_tests | print_in_columns
6766     echo
6767 fi
6768
6769 echo "License: $license"
6770
6771 fi # test "$quiet" != "yes"
6772
6773 if test -n "$WARNINGS"; then
6774     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6775     enabled fatal_warnings && exit 1
6776 fi
6777
6778 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6779
6780 esc(){
6781     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6782 }
6783
6784 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6785
6786 enabled stripping || strip="echo skipping strip"
6787 enabled stripping || striptype=""
6788
6789 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6790
6791 cat > ffbuild/config.mak <<EOF
6792 # Automatically generated by configure - do not modify!
6793 ifndef FFMPEG_CONFIG_MAK
6794 FFMPEG_CONFIG_MAK=1
6795 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6796 prefix=$prefix
6797 LIBDIR=\$(DESTDIR)$libdir
6798 SHLIBDIR=\$(DESTDIR)$shlibdir
6799 INCDIR=\$(DESTDIR)$incdir
6800 BINDIR=\$(DESTDIR)$bindir
6801 DATADIR=\$(DESTDIR)$datadir
6802 DOCDIR=\$(DESTDIR)$docdir
6803 MANDIR=\$(DESTDIR)$mandir
6804 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6805 INSTALL_NAME_DIR=$install_name_dir
6806 SRC_PATH=$source_path
6807 SRC_LINK=$source_link
6808 ifndef MAIN_MAKEFILE
6809 SRC_PATH:=\$(SRC_PATH:.%=..%)
6810 endif
6811 CC_IDENT=$cc_ident
6812 ARCH=$arch
6813 INTRINSICS=$intrinsics
6814 EXTERN_PREFIX=$extern_prefix
6815 CC=$cc
6816 CXX=$cxx
6817 AS=$as
6818 OBJCC=$objcc
6819 LD=$ld
6820 DEPCC=$dep_cc
6821 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6822 DEPAS=$as
6823 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6824 X86ASM=$x86asmexe
6825 DEPX86ASM=$x86asmexe
6826 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6827 AR=$ar
6828 ARFLAGS=$arflags
6829 AR_O=$ar_o
6830 AR_CMD=$ar
6831 NM_CMD=$nm
6832 RANLIB=$ranlib
6833 STRIP=$strip
6834 STRIPTYPE=$striptype
6835 NVCC=$nvcc
6836 CP=cp -p
6837 LN_S=$ln_s
6838 CPPFLAGS=$CPPFLAGS
6839 CFLAGS=$CFLAGS
6840 CXXFLAGS=$CXXFLAGS
6841 OBJCFLAGS=$OBJCFLAGS
6842 ASFLAGS=$ASFLAGS
6843 NVCCFLAGS=$nvccflags
6844 AS_C=$AS_C
6845 AS_O=$AS_O
6846 OBJCC_C=$OBJCC_C
6847 OBJCC_E=$OBJCC_E
6848 OBJCC_O=$OBJCC_O
6849 CC_C=$CC_C
6850 CC_E=$CC_E
6851 CC_O=$CC_O
6852 CXX_C=$CXX_C
6853 CXX_O=$CXX_O
6854 NVCC_C=$NVCC_C
6855 NVCC_O=$NVCC_O
6856 LD_O=$LD_O
6857 X86ASM_O=$X86ASM_O
6858 LD_LIB=$LD_LIB
6859 LD_PATH=$LD_PATH
6860 WINDRES=$windres
6861 DEPWINDRES=$dep_cc
6862 DOXYGEN=$doxygen
6863 LDFLAGS=$LDFLAGS
6864 LDEXEFLAGS=$LDEXEFLAGS
6865 LDSOFLAGS=$LDSOFLAGS
6866 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6867 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6868 X86ASMFLAGS=$X86ASMFLAGS
6869 BUILDSUF=$build_suffix
6870 PROGSSUF=$progs_suffix
6871 FULLNAME=$FULLNAME
6872 LIBPREF=$LIBPREF
6873 LIBSUF=$LIBSUF
6874 LIBNAME=$LIBNAME
6875 SLIBPREF=$SLIBPREF
6876 SLIBSUF=$SLIBSUF
6877 EXESUF=$EXESUF
6878 EXTRA_VERSION=$extra_version
6879 CCDEP=$CCDEP
6880 CXXDEP=$CXXDEP
6881 CCDEP_FLAGS=$CCDEP_FLAGS
6882 ASDEP=$ASDEP
6883 ASDEP_FLAGS=$ASDEP_FLAGS
6884 X86ASMDEP=$X86ASMDEP
6885 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6886 CC_DEPFLAGS=$CC_DEPFLAGS
6887 AS_DEPFLAGS=$AS_DEPFLAGS
6888 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6889 HOSTCC=$host_cc
6890 HOSTLD=$host_ld
6891 HOSTCFLAGS=$host_cflags
6892 HOSTCPPFLAGS=$host_cppflags
6893 HOSTEXESUF=$HOSTEXESUF
6894 HOSTLDFLAGS=$host_ldflags
6895 HOSTEXTRALIBS=$host_extralibs
6896 DEPHOSTCC=$host_cc
6897 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6898 HOSTCCDEP=$HOSTCCDEP
6899 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6900 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6901 HOSTCC_C=$HOSTCC_C
6902 HOSTCC_O=$HOSTCC_O
6903 HOSTLD_O=$HOSTLD_O
6904 TARGET_EXEC=$target_exec $target_exec_args
6905 TARGET_PATH=$target_path
6906 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6907 CFLAGS-ffplay=${sdl2_cflags}
6908 CFLAGS_HEADERS=$CFLAGS_HEADERS
6909 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6910 EXTRALIBS=$extralibs
6911 COMPAT_OBJS=$compat_objs
6912 INSTALL=$install
6913 SLIBNAME=${SLIBNAME}
6914 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6915 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6916 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6917 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6918 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6919 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6920 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6921 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6922 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6923 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6924 NOREDZONE_FLAGS=$noredzone_flags
6925 LIBFUZZER_PATH=$libfuzzer_path
6926 IGNORE_TESTS=$ignore_tests
6927 EOF
6928
6929 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6930
6931 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6932     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6933 done
6934
6935 cat > $TMPH <<EOF
6936 /* Automatically generated by configure - do not modify! */
6937 #ifndef FFMPEG_CONFIG_H
6938 #define FFMPEG_CONFIG_H
6939 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6940 #define FFMPEG_LICENSE "$(c_escape $license)"
6941 #define CONFIG_THIS_YEAR 2017
6942 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6943 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6944 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6945 #define av_restrict $_restrict
6946 #define EXTERN_PREFIX "${extern_prefix}"
6947 #define EXTERN_ASM ${extern_prefix}
6948 #define BUILDSUF "$build_suffix"
6949 #define SLIBSUF "$SLIBSUF"
6950 #define HAVE_MMX2 HAVE_MMXEXT
6951 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6952 EOF
6953
6954 test -n "$assert_level" &&
6955     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6956
6957 test -n "$malloc_prefix" &&
6958     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6959
6960 if enabled x86asm; then
6961     append config_files $TMPASM
6962     cat > $TMPASM <<EOF
6963 ; Automatically generated by configure - do not modify!
6964 EOF
6965 fi
6966
6967 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6968
6969
6970 mkdir -p doc
6971 mkdir -p tests
6972 mkdir -p tests/api
6973 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6974
6975 print_config ARCH_   "$config_files" $ARCH_LIST
6976 print_config HAVE_   "$config_files" $HAVE_LIST
6977 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6978                                      $CONFIG_EXTRA      \
6979                                      $ALL_COMPONENTS    \
6980
6981 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6982 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6983
6984 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6985 cp_if_changed $TMPH config.h
6986 touch ffbuild/.config
6987
6988 enabled x86asm && cp_if_changed $TMPASM config.asm
6989
6990 cat > $TMPH <<EOF
6991 /* Generated by ffmpeg configure */
6992 #ifndef AVUTIL_AVCONFIG_H
6993 #define AVUTIL_AVCONFIG_H
6994 EOF
6995
6996 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6997
6998 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6999
7000 cp_if_changed $TMPH libavutil/avconfig.h
7001
7002 # generate the lists of enabled components
7003 print_enabled_components(){
7004     file=$1
7005     struct_name=$2
7006     name=$3
7007     shift 3
7008     echo "static const $struct_name * const $name[] = {" > $TMPH
7009     for c in $*; do
7010         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7011     done
7012     echo "    NULL };" >> $TMPH
7013     cp_if_changed $TMPH $file
7014 }
7015
7016 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7017 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7018
7019 # Settings for pkg-config files
7020
7021 cat > $TMPH <<EOF
7022 # Automatically generated by configure - do not modify!
7023 shared=$shared
7024 build_suffix=$build_suffix
7025 prefix=$prefix
7026 libdir=$libdir
7027 incdir=$incdir
7028 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7029 source_path=${source_path}
7030 LIBPREF=${LIBPREF}
7031 LIBSUF=${LIBSUF}
7032 extralibs_avutil="$avutil_extralibs"
7033 extralibs_avcodec="$avcodec_extralibs"
7034 extralibs_avformat="$avformat_extralibs"
7035 extralibs_avdevice="$avdevice_extralibs"
7036 extralibs_avfilter="$avfilter_extralibs"
7037 extralibs_avresample="$avresample_extralibs"
7038 extralibs_postproc="$postproc_extralibs"
7039 extralibs_swscale="$swscale_extralibs"
7040 extralibs_swresample="$swresample_extralibs"
7041 EOF
7042
7043 for lib in $LIBRARY_LIST; do
7044     lib_deps="$(eval echo \$${lib}_deps)"
7045     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7046 done
7047
7048 cp_if_changed $TMPH ffbuild/config.sh