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   --enable-raise-major     increase major version numbers in sonames [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
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 227   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 228   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 229   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 230   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 231   --enable-libgme          enable Game Music Emu via libgme [no]
 232   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 233   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 234   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 235   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 236   --enable-libmodplug      enable ModPlug via libmodplug [no]
 237   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 238   --enable-libnut          enable NUT (de)muxing via libnut,
 239                            native (de)muxer exists [no]
 240   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 241   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 242   --enable-libopencv       enable video filtering via libopencv [no]
 243   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 244   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 245   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 246   --enable-libopus         enable Opus de/encoding via libopus [no]
 247   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 254   --enable-libsoxr         enable Include libsoxr resampling [no]
 255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 256   --enable-libssh          enable SFTP protocol via libssh [no]
 257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 258   --enable-libtheora       enable Theora encoding via libtheora [no]
 259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 261   --enable-libvidstab      enable video stabilization using vid.stab [no]
 262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 264                            native implementation exists [no]
 265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 267   --enable-libwebp         enable WebP encoding via libwebp [no]
 268   --enable-libx264         enable H.264 encoding via x264 [no]
 269   --enable-libx265         enable HEVC encoding via x265 [no]
 270   --enable-libxavs         enable AVS encoding via xavs [no]
 271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 275   --enable-libxvid         enable Xvid encoding via xvidcore,
 276                            native MPEG-4/Xvid encoder exists [no]
 277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 278   --enable-libzmq          enable message passing via libzmq [no]
 279   --enable-libzvbi         enable teletext support via libzvbi [no]
 280   --disable-lzma           disable lzma [autodetect]
 281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 282   --enable-mediacodec      enable Android MediaCodec support [no]
 283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl2           disable sdl2 [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 301   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 302   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 303   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 304   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 305   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 306   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 307   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 308   --enable-omx             enable OpenMAX IL code [no]
 309   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 310   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 311   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 312   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 313   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 314
 315 Toolchain options:
 316   --arch=ARCH              select architecture [$arch]
 317   --cpu=CPU                select the minimum required CPU (affects
 318                            instruction selection, may crash on older CPUs)
 319   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 320   --progs-suffix=SUFFIX    program name suffix []
 321   --enable-cross-compile   assume a cross-compiler is used
 322   --sysroot=PATH           root of cross-build tree
 323   --sysinclude=PATH        location of cross-build system headers
 324   --target-os=OS           compiler targets OS [$target_os]
 325   --target-exec=CMD        command to run executables on target
 326   --target-path=DIR        path to view of build directory on target
 327   --target-samples=DIR     path to samples directory on target
 328   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 329   --toolchain=NAME         set tool defaults according to NAME
 330   --nm=NM                  use nm tool NM [$nm_default]
 331   --ar=AR                  use archive tool AR [$ar_default]
 332   --as=AS                  use assembler AS [$as_default]
 333   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 334   --strip=STRIP            use strip tool STRIP [$strip_default]
 335   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 336   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 337   --cc=CC                  use C compiler CC [$cc_default]
 338   --cxx=CXX                use C compiler CXX [$cxx_default]
 339   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 340   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 341   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 342   --ld=LD                  use linker LD [$ld_default]
 343   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 344   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 345   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 346   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 347   --host-cc=HOSTCC         use host C compiler HOSTCC
 348   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 349   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 350   --host-ld=HOSTLD         use host linker HOSTLD
 351   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 352   --host-libs=HLIBS        use libs HLIBS when linking for host
 353   --host-os=OS             compiler host OS [$target_os]
 354   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 355   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 356   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 357   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 358   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 359   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 360   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 361   --extra-version=STRING   version string suffix []
 362   --optflags=OPTFLAGS      override optimization-related compiler flags
 363   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 364   --build-suffix=SUFFIX    library name suffix []
 365   --enable-pic             build position-independent code
 366   --enable-thumb           compile for Thumb instruction set
 367   --enable-lto             use link-time optimization
 368   --env="ENV=override"     override the environment variables
 369
 370 Advanced options (experts only):
 371   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 372   --custom-allocator=NAME  use a supported custom allocator
 373   --disable-symver         disable symbol versioning
 374   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 375   --disable-safe-bitstream-reader
 376                            disable buffer boundary checking in bitreaders
 377                            (faster, but may crash)
 378   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 379
 380 Optimization options (experts only):
 381   --disable-asm            disable all assembly optimizations
 382   --disable-altivec        disable AltiVec optimizations
 383   --disable-vsx            disable VSX optimizations
 384   --disable-power8         disable POWER8 optimizations
 385   --disable-amd3dnow       disable 3DNow! optimizations
 386   --disable-amd3dnowext    disable 3DNow! extended optimizations
 387   --disable-mmx            disable MMX optimizations
 388   --disable-mmxext         disable MMXEXT optimizations
 389   --disable-sse            disable SSE optimizations
 390   --disable-sse2           disable SSE2 optimizations
 391   --disable-sse3           disable SSE3 optimizations
 392   --disable-ssse3          disable SSSE3 optimizations
 393   --disable-sse4           disable SSE4 optimizations
 394   --disable-sse42          disable SSE4.2 optimizations
 395   --disable-avx            disable AVX optimizations
 396   --disable-xop            disable XOP optimizations
 397   --disable-fma3           disable FMA3 optimizations
 398   --disable-fma4           disable FMA4 optimizations
 399   --disable-avx2           disable AVX2 optimizations
 400   --disable-aesni          disable AESNI optimizations
 401   --disable-armv5te        disable armv5te optimizations
 402   --disable-armv6          disable armv6 optimizations
 403   --disable-armv6t2        disable armv6t2 optimizations
 404   --disable-vfp            disable VFP optimizations
 405   --disable-neon           disable NEON optimizations
 406   --disable-inline-asm     disable use of inline assembly
 407   --disable-yasm           disable use of nasm/yasm assembly
 408   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 409   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 410   --disable-msa            disable MSA optimizations
 411   --disable-mipsfpu        disable floating point MIPS optimizations
 412   --disable-mmi            disable Loongson SIMD optimizations
 413   --disable-fast-unaligned consider unaligned accesses slow
 414
 415 Developer options (useful when working on FFmpeg itself):
 416   --disable-debug          disable debugging symbols
 417   --enable-debug=LEVEL     set the debug level [$debuglevel]
 418   --disable-optimizations  disable compiler optimizations
 419   --enable-extra-warnings  enable more compiler warnings
 420   --disable-stripping      disable stripping of executables and shared libraries
 421   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 422                            2 causes a slowdown at runtime.
 423   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 424   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 425                            leaks and errors, using the specified valgrind binary.
 426                            Cannot be combined with --target-exec
 427   --enable-ftrapv          Trap arithmetic overflows
 428   --samples=PATH           location of test samples for FATE, if not set use
 429                            \$FATE_SAMPLES at make invocation time.
 430   --enable-neon-clobber-test check NEON registers for clobbering (should be
 431                            used only for debugging purposes)
 432   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 433                            should be used only for debugging purposes)
 434   --enable-random          randomly enable/disable components
 435   --disable-random
 436   --enable-random=LIST     randomly enable/disable specific components or
 437   --disable-random=LIST    component groups. LIST is a comma-separated list
 438                            of NAME[:PROB] entries where NAME is a component
 439                            (group) and PROB the probability associated with
 440                            NAME (default 0.5).
 441   --random-seed=VALUE      seed value for --enable/disable-random
 442   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 443                            (only applies to --disable-optimizations builds)
 444   --enable-osfuzz          Enable building fuzzer tool
 445   --libfuzzer=PATH         path to libfuzzer
 446   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 447                            in the name) of tests whose result is ignored
 448
 449 NOTE: Object files are built at the place where configure is launched.
 450 EOF
 451   exit 0
 452 }
 453
 454 quotes='""'
 455 if test -t 1 && which tput >/dev/null 2>&1; then
 456     ncolors=$(tput colors)
 457     if test -n "$ncolors" && test $ncolors -ge 8; then
 458         bold_color=$(tput bold)
 459         warn_color=$(tput setaf 3)
 460         error_color=$(tput setaf 1)
 461         reset_color=$(tput sgr0)
 462     fi
 463     # 72 used instead of 80 since that's the default of pr
 464     ncols=$(tput cols)
 465 fi
 466 : ${ncols:=72}
 467
 468 log(){
 469     echo "$@" >> $logfile
 470 }
 471
 472 log_file(){
 473     log BEGIN $1
 474     pr -n -t $1 >> $logfile
 475     log END $1
 476 }
 477
 478 warn(){
 479     log "WARNING: $*"
 480     WARNINGS="${WARNINGS}WARNING: $*\n"
 481 }
 482
 483 die(){
 484     log "$@"
 485     echo "$error_color$bold_color$@$reset_color"
 486     cat <<EOF
 487
 488 If you think configure made a mistake, make sure you are using the latest
 489 version from Git.  If the latest version fails, report the problem to the
 490 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 491 EOF
 492     if disabled logging; then
 493         cat <<EOF
 494 Rerun configure with logging enabled (do not use --disable-logging), and
 495 include the log this produces with your report.
 496 EOF
 497     else
 498         cat <<EOF
 499 Include the log file "$logfile" produced by configure as this will help
 500 solve the problem.
 501 EOF
 502     fi
 503     exit 1
 504 }
 505
 506 # Avoid locale weirdness, besides we really just want to translate ASCII.
 507 toupper(){
 508     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 509 }
 510
 511 tolower(){
 512     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 513 }
 514
 515 c_escape(){
 516     echo "$*" | sed 's/["\\]/\\\0/g'
 517 }
 518
 519 sh_quote(){
 520     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 521     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 522     echo "$v"
 523 }
 524
 525 cleanws(){
 526     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 527 }
 528
 529 filter(){
 530     pat=$1
 531     shift
 532     for v; do
 533         eval "case $v in $pat) printf '%s ' $v ;; esac"
 534     done
 535 }
 536
 537 filter_out(){
 538     pat=$1
 539     shift
 540     for v; do
 541         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 542     done
 543 }
 544
 545 map(){
 546     m=$1
 547     shift
 548     for v; do eval $m; done
 549 }
 550
 551 add_suffix(){
 552     suffix=$1
 553     shift
 554     for v; do echo ${v}${suffix}; done
 555 }
 556
 557 set_all(){
 558     value=$1
 559     shift
 560     for var in $*; do
 561         eval $var=$value
 562     done
 563 }
 564
 565 set_weak(){
 566     value=$1
 567     shift
 568     for var; do
 569         eval : \${$var:=$value}
 570     done
 571 }
 572
 573 sanitize_var_name(){
 574     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 575 }
 576
 577 set_safe(){
 578     var=$1
 579     shift
 580     eval $(sanitize_var_name "$var")='$*'
 581 }
 582
 583 get_safe(){
 584     eval echo \$$(sanitize_var_name "$1")
 585 }
 586
 587 pushvar(){
 588     for pvar in $*; do
 589         eval level=\${${pvar}_level:=0}
 590         eval ${pvar}_${level}="\$$pvar"
 591         eval ${pvar}_level=$(($level+1))
 592     done
 593 }
 594
 595 popvar(){
 596     for pvar in $*; do
 597         eval level=\${${pvar}_level:-0}
 598         test $level = 0 && continue
 599         eval level=$(($level-1))
 600         eval $pvar="\${${pvar}_${level}}"
 601         eval ${pvar}_level=$level
 602         eval unset ${pvar}_${level}
 603     done
 604 }
 605
 606 request(){
 607     for var in $*; do
 608         eval ${var}_requested=yes
 609         eval $var=
 610     done
 611 }
 612
 613 enable(){
 614     set_all yes $*
 615 }
 616
 617 disable(){
 618     set_all no $*
 619 }
 620
 621 enable_weak(){
 622     set_weak yes $*
 623 }
 624
 625 disable_weak(){
 626     set_weak no $*
 627 }
 628
 629 enable_safe(){
 630     for var; do
 631         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 632     done
 633 }
 634
 635 disable_safe(){
 636     for var; do
 637         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 638     done
 639 }
 640
 641 do_enable_deep(){
 642     for var; do
 643         enabled $var && continue
 644         eval sel="\$${var}_select"
 645         eval sgs="\$${var}_suggest"
 646         pushvar var sgs
 647         enable_deep $sel
 648         popvar sgs
 649         enable_deep_weak $sgs
 650         popvar var
 651     done
 652 }
 653
 654 enable_deep(){
 655     do_enable_deep $*
 656     enable $*
 657 }
 658
 659 enable_deep_weak(){
 660     for var; do
 661         disabled $var && continue
 662         pushvar var
 663         do_enable_deep $var
 664         popvar var
 665         enable_weak $var
 666     done
 667 }
 668
 669 requested(){
 670     test "${1#!}" = "$1" && op='=' || op=!=
 671     eval test "x\$${1#!}_requested" $op "xyes"
 672 }
 673
 674 enabled(){
 675     test "${1#!}" = "$1" && op='=' || op=!=
 676     eval test "x\$${1#!}" $op "xyes"
 677 }
 678
 679 disabled(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}" $op "xno"
 682 }
 683
 684 enabled_all(){
 685     for opt; do
 686         enabled $opt || return 1
 687     done
 688 }
 689
 690 disabled_all(){
 691     for opt; do
 692         disabled $opt || return 1
 693     done
 694 }
 695
 696 enabled_any(){
 697     for opt; do
 698         enabled $opt && return 0
 699     done
 700 }
 701
 702 disabled_any(){
 703     for opt; do
 704         disabled $opt && return 0
 705     done
 706     return 1
 707 }
 708
 709 set_default(){
 710     for opt; do
 711         eval : \${$opt:=\$${opt}_default}
 712     done
 713 }
 714
 715 is_in(){
 716     value=$1
 717     shift
 718     for var in $*; do
 719         [ $var = $value ] && return 0
 720     done
 721     return 1
 722 }
 723
 724 do_check_deps(){
 725     for cfg; do
 726         cfg="${cfg#!}"
 727         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 728         disabled ${cfg}_checking && continue
 729         enable ${cfg}_checking
 730         append allopts $cfg
 731
 732         eval dep_all="\$${cfg}_deps"
 733         eval dep_any="\$${cfg}_deps_any"
 734         eval dep_sel="\$${cfg}_select"
 735         eval dep_sgs="\$${cfg}_suggest"
 736         eval dep_ifa="\$${cfg}_if"
 737         eval dep_ifn="\$${cfg}_if_any"
 738
 739         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 740         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 741         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 742
 743         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 744         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 745         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 746         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 747         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 748
 749         if enabled $cfg; then
 750             enable_deep $dep_sel
 751             enable_deep_weak $dep_sgs
 752         fi
 753
 754         disable ${cfg}_checking
 755     done
 756 }
 757
 758 check_deps(){
 759     unset allopts
 760
 761     do_check_deps "$@"
 762
 763     for cfg in $allopts; do
 764         enabled $cfg || continue
 765         eval dep_extralibs="\$${cfg}_extralibs"
 766         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 767     done
 768 }
 769
 770 print_config(){
 771     pfx=$1
 772     files=$2
 773     shift 2
 774     map 'eval echo "$v \${$v:-no}"' "$@" |
 775     awk "BEGIN { split(\"$files\", files) }
 776         {
 777             c = \"$pfx\" toupper(\$1);
 778             v = \$2;
 779             sub(/yes/, 1, v);
 780             sub(/no/,  0, v);
 781             for (f in files) {
 782                 file = files[f];
 783                 if (file ~ /\\.h\$/) {
 784                     printf(\"#define %s %d\\n\", c, v) >>file;
 785                 } else if (file ~ /\\.asm\$/) {
 786                     printf(\"%%define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.mak\$/) {
 788                     n = -v ? \"\" : \"!\";
 789                     printf(\"%s%s=yes\\n\", n, c) >>file;
 790                 } else if (file ~ /\\.texi\$/) {
 791                     pre = -v ? \"\" : \"@c \";
 792                     yesno = \$2;
 793                     c2 = tolower(c);
 794                     gsub(/_/, \"-\", c2);
 795                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 796                 }
 797             }
 798         }"
 799 }
 800
 801 print_enabled(){
 802     suf=$1
 803     shift
 804     for v; do
 805         enabled $v && printf "%s\n" ${v%$suf}
 806     done
 807 }
 808
 809 append(){
 810     var=$1
 811     shift
 812     eval "$var=\"\$$var $*\""
 813 }
 814
 815 prepend(){
 816     var=$1
 817     shift
 818     eval "$var=\"$* \$$var\""
 819 }
 820
 821 unique(){
 822     var=$1
 823     uniq_list=""
 824     for tok in $(eval echo \$$var); do
 825         uniq_list="$(filter_out $tok $uniq_list) $tok"
 826     done
 827     eval "$var=\"${uniq_list}\""
 828 }
 829
 830 add_cppflags(){
 831     append CPPFLAGS "$@"
 832 }
 833
 834 add_cflags(){
 835     append CFLAGS $($cflags_filter "$@")
 836 }
 837
 838 add_cflags_headers(){
 839     append CFLAGS_HEADERS $($cflags_filter "$@")
 840 }
 841
 842 add_cxxflags(){
 843     append CXXFLAGS $($cflags_filter "$@")
 844 }
 845
 846 add_asflags(){
 847     append ASFLAGS $($asflags_filter "$@")
 848 }
 849
 850 add_objcflags(){
 851     append OBJCFLAGS $($objcflags_filter "$@")
 852 }
 853
 854 add_ldflags(){
 855     append LDFLAGS $($ldflags_filter "$@")
 856 }
 857
 858 add_ldexeflags(){
 859     append LDEXEFLAGS $($ldflags_filter "$@")
 860 }
 861
 862 add_ldlibflags(){
 863     append LDLIBFLAGS $($ldflags_filter "$@")
 864 }
 865
 866 add_stripflags(){
 867     append ASMSTRIPFLAGS "$@"
 868 }
 869
 870 add_extralibs(){
 871     prepend extralibs $($ldflags_filter "$@")
 872 }
 873
 874 add_host_cppflags(){
 875     append host_cppflags "$@"
 876 }
 877
 878 add_host_cflags(){
 879     append host_cflags $($host_cflags_filter "$@")
 880 }
 881
 882 add_host_ldflags(){
 883     append host_ldflags $($host_ldflags_filter "$@")
 884 }
 885
 886 add_compat(){
 887     append compat_objs $1
 888     shift
 889     map 'add_cppflags -D$v' "$@"
 890 }
 891
 892 check_cmd(){
 893     log "$@"
 894     "$@" >> $logfile 2>&1
 895 }
 896
 897 check_stat(){
 898     log check_stat "$@"
 899     stat "$1" >> $logfile 2>&1
 900 }
 901
 902 cc_o(){
 903     eval printf '%s\\n' $CC_O
 904 }
 905
 906 cc_e(){
 907     eval printf '%s\\n' $CC_E
 908 }
 909
 910 check_cc(){
 911     log check_cc "$@"
 912     cat > $TMPC
 913     log_file $TMPC
 914     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 915 }
 916
 917 check_cxx(){
 918     log check_cxx "$@"
 919     cat > $TMPCPP
 920     log_file $TMPCPP
 921     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 922 }
 923
 924 check_objcc(){
 925     log check_objcc "$@"
 926     cat > $TMPM
 927     log_file $TMPM
 928     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 929 }
 930
 931 check_cpp(){
 932     log check_cpp "$@"
 933     cat > $TMPC
 934     log_file $TMPC
 935     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 936 }
 937
 938 as_o(){
 939     eval printf '%s\\n' $AS_O
 940 }
 941
 942 check_as(){
 943     log check_as "$@"
 944     cat > $TMPS
 945     log_file $TMPS
 946     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 947 }
 948
 949 check_inline_asm(){
 950     log check_inline_asm "$@"
 951     name="$1"
 952     code="$2"
 953     shift 2
 954     disable $name
 955     check_cc "$@" <<EOF && enable $name
 956 void foo(void){ __asm__ volatile($code); }
 957 EOF
 958 }
 959
 960 check_inline_asm_flags(){
 961     log check_inline_asm_flags "$@"
 962     name="$1"
 963     code="$2"
 964     flags=''
 965     shift 2
 966     while [ "$1" != "" ]; do
 967       append flags $1
 968       shift
 969     done;
 970     disable $name
 971     cat > $TMPC <<EOF
 972 void foo(void){ __asm__ volatile($code); }
 973 EOF
 974     log_file $TMPC
 975     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 976     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 977 }
 978
 979 check_insn(){
 980     log check_insn "$@"
 981     check_inline_asm ${1}_inline "\"$2\""
 982     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 983 }
 984
 985 check_yasm(){
 986     log check_yasm "$@"
 987     echo "$1" > $TMPS
 988     log_file $TMPS
 989     shift 1
 990     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 991 }
 992
 993 ld_o(){
 994     eval printf '%s\\n' $LD_O
 995 }
 996
 997 check_ld(){
 998     log check_ld "$@"
 999     type=$1
1000     shift 1
1001     flags=$(filter_out '-l*|*.so' $@)
1002     libs=$(filter '-l*|*.so' $@)
1003     check_$type $($cflags_filter $flags) || return
1004     flags=$($ldflags_filter $flags)
1005     libs=$($ldflags_filter $libs)
1006     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1007 }
1008
1009 print_include(){
1010     hdr=$1
1011     test "${hdr%.h}" = "${hdr}" &&
1012         echo "#include $hdr"    ||
1013         echo "#include <$hdr>"
1014 }
1015
1016 check_code(){
1017     log check_code "$@"
1018     check=$1
1019     headers=$2
1020     code=$3
1021     shift 3
1022     {
1023         for hdr in $headers; do
1024             print_include $hdr
1025         done
1026         echo "int main(void) { $code; return 0; }"
1027     } | check_$check "$@"
1028 }
1029
1030 check_cppflags(){
1031     log check_cppflags "$@"
1032     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1033 int x;
1034 EOF
1035 }
1036
1037 test_cflags(){
1038     log test_cflags "$@"
1039     set -- $($cflags_filter "$@")
1040     check_cc "$@" <<EOF
1041 int x;
1042 EOF
1043 }
1044
1045 check_cflags(){
1046     log check_cflags "$@"
1047     test_cflags "$@" && add_cflags "$@"
1048 }
1049
1050 check_cxxflags(){
1051     log check_cxxflags "$@"
1052     set -- $($cflags_filter "$@")
1053     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1054 int x;
1055 EOF
1056 }
1057
1058 test_objcflags(){
1059     log test_objcflags "$@"
1060     set -- $($objcflags_filter "$@")
1061     check_objcc "$@" <<EOF
1062 int x;
1063 EOF
1064 }
1065
1066 check_objcflags(){
1067     log check_objcflags "$@"
1068     test_objcflags "$@" && add_objcflags "$@"
1069 }
1070
1071 test_ldflags(){
1072     log test_ldflags "$@"
1073     check_ld "cc" "$@" <<EOF
1074 int main(void){ return 0; }
1075 EOF
1076 }
1077
1078 check_ldflags(){
1079     log check_ldflags "$@"
1080     test_ldflags "$@" && add_ldflags "$@"
1081 }
1082
1083 test_stripflags(){
1084     log test_stripflags "$@"
1085     # call check_cc to get a fresh TMPO
1086     check_cc <<EOF
1087 int main(void) { return 0; }
1088 EOF
1089     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1090 }
1091
1092 check_stripflags(){
1093     log check_stripflags "$@"
1094     test_stripflags "$@" && add_stripflags "$@"
1095 }
1096
1097 check_header(){
1098     log check_header "$@"
1099     header=$1
1100     shift
1101     disable_safe $header
1102     check_cpp "$@" <<EOF && enable_safe $header
1103 #include <$header>
1104 int x;
1105 EOF
1106 }
1107
1108 check_header_objcc(){
1109     log check_header_objcc "$@"
1110     rm -f -- "$TMPO"
1111     header=$1
1112     shift
1113     disable_safe $header
1114     {
1115        echo "#include <$header>"
1116        echo "int main(void) { return 0; }"
1117     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1118 }
1119
1120 check_func(){
1121     log check_func "$@"
1122     func=$1
1123     shift
1124     disable $func
1125     check_ld "cc" "$@" <<EOF && enable $func
1126 extern int $func();
1127 int main(void){ $func(); }
1128 EOF
1129 }
1130
1131 check_complexfunc(){
1132     log check_complexfunc "$@"
1133     func=$1
1134     narg=$2
1135     shift 2
1136     test $narg = 2 && args="f, g" || args="f * I"
1137     disable $func
1138     check_ld "cc" "$@" <<EOF && enable $func
1139 #include <complex.h>
1140 #include <math.h>
1141 float foo(complex float f, complex float g) { return $func($args); }
1142 int main(void){ return (int) foo; }
1143 EOF
1144 }
1145
1146 check_mathfunc(){
1147     log check_mathfunc "$@"
1148     func=$1
1149     narg=$2
1150     shift 2
1151     test $narg = 2 && args="f, g" || args="f"
1152     disable $func
1153     check_ld "cc" "$@" <<EOF && enable $func
1154 #include <math.h>
1155 float foo(float f, float g) { return $func($args); }
1156 int main(void){ return (int) foo; }
1157 EOF
1158 }
1159
1160 check_func_headers(){
1161     log check_func_headers "$@"
1162     headers=$1
1163     funcs=$2
1164     shift 2
1165     {
1166         for hdr in $headers; do
1167             print_include $hdr
1168         done
1169         echo "#include <stdint.h>"
1170         for func in $funcs; do
1171             echo "long check_$func(void) { return (long) $func; }"
1172         done
1173         echo "int main(void) { int ret = 0;"
1174         # LTO could optimize out the test functions without this
1175         for func in $funcs; do
1176             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1177         done
1178         echo "return ret; }"
1179     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1180 }
1181
1182 check_class_headers_cpp(){
1183     log check_class_headers_cpp "$@"
1184     headers=$1
1185     classes=$2
1186     shift 2
1187     {
1188         for hdr in $headers; do
1189             echo "#include <$hdr>"
1190         done
1191         echo "int main(void) { "
1192         i=1
1193         for class in $classes; do
1194             echo "$class obj$i;"
1195             i=$(expr $i + 1)
1196         done
1197         echo "return 0; }"
1198     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1199 }
1200
1201 check_cpp_condition(){
1202     log check_cpp_condition "$@"
1203     header=$1
1204     condition=$2
1205     shift 2
1206     check_cpp "$@" <<EOF
1207 #include <$header>
1208 #if !($condition)
1209 #error "unsatisfied condition: $condition"
1210 #endif
1211 EOF
1212 }
1213
1214 test_cflags_cc(){
1215     log test_cflags_cc "$@"
1216     flags=$1
1217     header=$2
1218     condition=$3
1219     shift 3
1220     set -- $($cflags_filter "$flags")
1221     check_cc "$@" <<EOF
1222 #include <$header>
1223 #if !($condition)
1224 #error "unsatisfied condition: $condition"
1225 #endif
1226 EOF
1227 }
1228
1229 check_lib(){
1230     log check_lib "$@"
1231     name="$1"
1232     headers="$2"
1233     funcs="$3"
1234     shift 3
1235     disable $name
1236     check_func_headers "$headers" "$funcs" "$@" &&
1237         enable $name && add_extralibs "$@"
1238 }
1239
1240 check_lib_cpp(){
1241     log check_lib_cpp "$@"
1242     headers="$1"
1243     classes="$2"
1244     shift 2
1245     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1246 }
1247
1248 check_pkg_config(){
1249     log check_pkg_config "$@"
1250     pkg_version="$1"
1251     pkg="${1%% *}"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1256     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1257     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1258     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1259         set_safe "${pkg}_cflags"    $pkg_cflags &&
1260         set_safe "${pkg}_extralibs" $pkg_libs
1261 }
1262
1263 check_exec(){
1264     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1265 }
1266
1267 check_exec_crash(){
1268     log check_exec_crash "$@"
1269     code=$(cat)
1270
1271     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1272     # are safe but may not be available everywhere.  Thus we use
1273     # raise(SIGTERM) instead.  The check is run in a subshell so we
1274     # can redirect the "Terminated" message from the shell.  SIGBUS
1275     # is not defined by standard C so it is used conditionally.
1276
1277     (check_exec "$@") >> $logfile 2>&1 <<EOF
1278 #include <signal.h>
1279 static void sighandler(int sig){
1280     raise(SIGTERM);
1281 }
1282 int foo(void){
1283     $code
1284 }
1285 int (*func_ptr)(void) = foo;
1286 int main(void){
1287     signal(SIGILL, sighandler);
1288     signal(SIGFPE, sighandler);
1289     signal(SIGSEGV, sighandler);
1290 #ifdef SIGBUS
1291     signal(SIGBUS, sighandler);
1292 #endif
1293     return func_ptr();
1294 }
1295 EOF
1296 }
1297
1298 check_type(){
1299     log check_type "$@"
1300     headers=$1
1301     type=$2
1302     shift 2
1303     disable_safe "$type"
1304     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1305 }
1306
1307 check_struct(){
1308     log check_struct "$@"
1309     headers=$1
1310     struct=$2
1311     member=$3
1312     shift 3
1313     disable_safe "${struct}_${member}"
1314     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1315         enable_safe "${struct}_${member}"
1316 }
1317
1318 check_builtin(){
1319     log check_builtin "$@"
1320     name=$1
1321     headers=$2
1322     builtin=$3
1323     shift 3
1324     disable "$name"
1325     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1326 }
1327
1328 check_compile_assert(){
1329     log check_compile_assert "$@"
1330     name=$1
1331     headers=$2
1332     condition=$3
1333     shift 3
1334     disable "$name"
1335     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1336 }
1337
1338 require(){
1339     log require "$@"
1340     name_version="$1"
1341     name="${1%% *}"
1342     headers="$2"
1343     func="$3"
1344     shift 3
1345     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1346 }
1347
1348 require_cpp(){
1349     name="$1"
1350     headers="$2"
1351     classes="$3"
1352     shift 3
1353     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1354 }
1355
1356 use_pkg_config(){
1357     log use_pkg_config "$@"
1358     pkg="$1"
1359     check_pkg_config "$@" || return 1
1360     add_cflags    $(get_safe "${pkg}_cflags")
1361     add_extralibs $(get_safe "${pkg}_extralibs")
1362 }
1363
1364 require_pkg_config(){
1365     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1366 }
1367
1368 hostcc_e(){
1369     eval printf '%s\\n' $HOSTCC_E
1370 }
1371
1372 hostcc_o(){
1373     eval printf '%s\\n' $HOSTCC_O
1374 }
1375
1376 check_host_cc(){
1377     log check_host_cc "$@"
1378     cat > $TMPC
1379     log_file $TMPC
1380     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1381 }
1382
1383 check_host_cpp(){
1384     log check_host_cpp "$@"
1385     cat > $TMPC
1386     log_file $TMPC
1387     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1388 }
1389
1390 check_host_cppflags(){
1391     log check_host_cppflags "$@"
1392     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1393 int x;
1394 EOF
1395 }
1396
1397 check_host_cflags(){
1398     log check_host_cflags "$@"
1399     set -- $($host_cflags_filter "$@")
1400     check_host_cc "$@" <<EOF && append host_cflags "$@"
1401 int x;
1402 EOF
1403 }
1404
1405 check_host_cpp_condition(){
1406     log check_host_cpp_condition "$@"
1407     header=$1
1408     condition=$2
1409     shift 2
1410     check_host_cpp "$@" <<EOF
1411 #include <$header>
1412 #if !($condition)
1413 #error "unsatisfied condition: $condition"
1414 #endif
1415 EOF
1416 }
1417
1418 cp_if_changed(){
1419     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1420     mkdir -p "$(dirname $2)"
1421     cp -f "$1" "$2"
1422 }
1423
1424 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1425 # system-dependent things.
1426
1427 AVCODEC_COMPONENTS="
1428     bsfs
1429     decoders
1430     encoders
1431     hwaccels
1432     parsers
1433 "
1434
1435 AVDEVICE_COMPONENTS="
1436     indevs
1437     outdevs
1438 "
1439 AVFILTER_COMPONENTS="
1440     filters
1441 "
1442 AVFORMAT_COMPONENTS="
1443     demuxers
1444     muxers
1445     protocols
1446 "
1447
1448 AVRESAMPLE_COMPONENTS=""
1449 AVUTIL_COMPONENTS=""
1450
1451 COMPONENT_LIST="
1452     $AVCODEC_COMPONENTS
1453     $AVDEVICE_COMPONENTS
1454     $AVFILTER_COMPONENTS
1455     $AVFORMAT_COMPONENTS
1456     $AVRESAMPLE_COMPONENTS
1457     $AVUTIL_COMPONENTS
1458 "
1459
1460 EXAMPLE_LIST="
1461     avio_dir_cmd_example
1462     avio_reading_example
1463     decode_audio_example
1464     decode_video_example
1465     demuxing_decoding_example
1466     encode_audio_example
1467     encode_video_example
1468     extract_mvs_example
1469     filter_audio_example
1470     filtering_audio_example
1471     filtering_video_example
1472     http_multiclient_example
1473     metadata_example
1474     muxing_example
1475     qsvdec_example
1476     remuxing_example
1477     resampling_audio_example
1478     scaling_video_example
1479     transcode_aac_example
1480     transcoding_example
1481 "
1482 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1483     bzlib
1484     iconv
1485     libxcb
1486     libxcb_shm
1487     libxcb_shape
1488     libxcb_xfixes
1489     lzma
1490     schannel
1491     sdl
1492     sdl2
1493     securetransport
1494     xlib
1495     zlib
1496 "
1497
1498 EXTERNAL_LIBRARY_GPL_LIST="
1499     avisynth
1500     frei0r
1501     libcdio
1502     librubberband
1503     libvidstab
1504     libx264
1505     libx265
1506     libxavs
1507     libxvid
1508 "
1509
1510 EXTERNAL_LIBRARY_NONFREE_LIST="
1511     decklink
1512     libfdk_aac
1513     openssl
1514 "
1515
1516 EXTERNAL_LIBRARY_VERSION3_LIST="
1517     gmp
1518     libopencore_amrnb
1519     libopencore_amrwb
1520     libvo_amrwbenc
1521 "
1522
1523 EXTERNAL_LIBRARY_GPLV3_LIST="
1524     libsmbclient
1525 "
1526
1527 EXTERNAL_LIBRARY_LIST="
1528     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1529     $EXTERNAL_LIBRARY_GPL_LIST
1530     $EXTERNAL_LIBRARY_NONFREE_LIST
1531     $EXTERNAL_LIBRARY_VERSION3_LIST
1532     $EXTERNAL_LIBRARY_GPLV3_LIST
1533     chromaprint
1534     crystalhd
1535     gcrypt
1536     gnutls
1537     jni
1538     ladspa
1539     libass
1540     libbluray
1541     libbs2b
1542     libcaca
1543     libcelt
1544     libdc1394
1545     libflite
1546     libfontconfig
1547     libfreetype
1548     libfribidi
1549     libgme
1550     libgsm
1551     libiec61883
1552     libilbc
1553     libkvazaar
1554     libmodplug
1555     libmp3lame
1556     libnut
1557     libopencv
1558     libopenh264
1559     libopenjpeg
1560     libopenmpt
1561     libopus
1562     libpulse
1563     librtmp
1564     libschroedinger
1565     libshine
1566     libsmbclient
1567     libsnappy
1568     libsoxr
1569     libspeex
1570     libssh
1571     libtesseract
1572     libtheora
1573     libtwolame
1574     libv4l2
1575     libvorbis
1576     libvpx
1577     libwavpack
1578     libwebp
1579     libzimg
1580     libzmq
1581     libzvbi
1582     mediacodec
1583     netcdf
1584     openal
1585     opencl
1586     opengl
1587     videotoolbox
1588 "
1589 HWACCEL_AUTODETECT_LIBRARY_LIST="
1590     audiotoolbox
1591     cuda
1592     cuvid
1593     d3d11va
1594     dxva2
1595     nvenc
1596     vaapi
1597     vda
1598     vdpau
1599     videotoolbox_hwaccel
1600     xvmc
1601 "
1602
1603 HWACCEL_LIBRARY_NONFREE_LIST="
1604     cuda_sdk
1605     libnpp
1606 "
1607
1608 HWACCEL_LIBRARY_LIST="
1609     $HWACCEL_AUTODETECT_LIBRARY_LIST
1610     $HWACCEL_LIBRARY_NONFREE_LIST
1611     libmfx
1612     mmal
1613     omx
1614 "
1615
1616 DOCUMENT_LIST="
1617     doc
1618     htmlpages
1619     manpages
1620     podpages
1621     txtpages
1622 "
1623
1624 FEATURE_LIST="
1625     ftrapv
1626     gray
1627     hardcoded_tables
1628     omx_rpi
1629     runtime_cpudetect
1630     safe_bitstream_reader
1631     shared
1632     small
1633     static
1634     swscale_alpha
1635 "
1636
1637 LIBRARY_LIST="
1638     avcodec
1639     avdevice
1640     avfilter
1641     avformat
1642     avresample
1643     avutil
1644     postproc
1645     swresample
1646     swscale
1647 "
1648
1649 LICENSE_LIST="
1650     gpl
1651     nonfree
1652     version3
1653 "
1654
1655 PROGRAM_LIST="
1656     ffplay
1657     ffprobe
1658     ffserver
1659     ffmpeg
1660 "
1661
1662 SUBSYSTEM_LIST="
1663     dct
1664     dwt
1665     error_resilience
1666     faan
1667     fast_unaligned
1668     fft
1669     lsp
1670     lzo
1671     mdct
1672     pixelutils
1673     network
1674     rdft
1675 "
1676
1677 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1678 CONFIG_LIST="
1679     $DOCUMENT_LIST
1680     $EXAMPLE_LIST
1681     $EXTERNAL_LIBRARY_LIST
1682     $HWACCEL_LIBRARY_LIST
1683     $FEATURE_LIST
1684     $LICENSE_LIST
1685     $LIBRARY_LIST
1686     $PROGRAM_LIST
1687     $SUBSYSTEM_LIST
1688     fontconfig
1689     memory_poisoning
1690     neon_clobber_test
1691     ossfuzz
1692     pic
1693     raise_major
1694     thumb
1695     valgrind_backtrace
1696     xmm_clobber_test
1697     $COMPONENT_LIST
1698 "
1699
1700 THREADS_LIST="
1701     pthreads
1702     os2threads
1703     w32threads
1704 "
1705
1706 ATOMICS_LIST="
1707     atomics_gcc
1708     atomics_suncc
1709     atomics_win32
1710 "
1711
1712 AUTODETECT_LIBS="
1713     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1714     $HWACCEL_AUTODETECT_LIBRARY_LIST
1715     $THREADS_LIST
1716 "
1717
1718 ARCH_LIST="
1719     aarch64
1720     alpha
1721     arm
1722     avr32
1723     avr32_ap
1724     avr32_uc
1725     bfin
1726     ia64
1727     m68k
1728     mips
1729     mips64
1730     parisc
1731     ppc
1732     ppc64
1733     s390
1734     sh4
1735     sparc
1736     sparc64
1737     tilegx
1738     tilepro
1739     tomi
1740     x86
1741     x86_32
1742     x86_64
1743 "
1744
1745 ARCH_EXT_LIST_ARM="
1746     armv5te
1747     armv6
1748     armv6t2
1749     armv8
1750     neon
1751     vfp
1752     vfpv3
1753     setend
1754 "
1755
1756 ARCH_EXT_LIST_MIPS="
1757     mipsfpu
1758     mips32r2
1759     mips32r5
1760     mips64r2
1761     mips32r6
1762     mips64r6
1763     mipsdsp
1764     mipsdspr2
1765     msa
1766 "
1767
1768 ARCH_EXT_LIST_LOONGSON="
1769     loongson2
1770     loongson3
1771     mmi
1772 "
1773
1774 ARCH_EXT_LIST_X86_SIMD="
1775     aesni
1776     amd3dnow
1777     amd3dnowext
1778     avx
1779     avx2
1780     fma3
1781     fma4
1782     mmx
1783     mmxext
1784     sse
1785     sse2
1786     sse3
1787     sse4
1788     sse42
1789     ssse3
1790     xop
1791 "
1792
1793 ARCH_EXT_LIST_PPC="
1794     altivec
1795     dcbzl
1796     ldbrx
1797     power8
1798     ppc4xx
1799     vsx
1800 "
1801
1802 ARCH_EXT_LIST_X86="
1803     $ARCH_EXT_LIST_X86_SIMD
1804     cpunop
1805     i686
1806 "
1807
1808 ARCH_EXT_LIST="
1809     $ARCH_EXT_LIST_ARM
1810     $ARCH_EXT_LIST_PPC
1811     $ARCH_EXT_LIST_X86
1812     $ARCH_EXT_LIST_MIPS
1813     $ARCH_EXT_LIST_LOONGSON
1814 "
1815
1816 ARCH_FEATURES="
1817     aligned_stack
1818     fast_64bit
1819     fast_clz
1820     fast_cmov
1821     local_aligned_8
1822     local_aligned_16
1823     local_aligned_32
1824     simd_align_16
1825     simd_align_32
1826 "
1827
1828 BUILTIN_LIST="
1829     atomic_cas_ptr
1830     machine_rw_barrier
1831     MemoryBarrier
1832     mm_empty
1833     rdtsc
1834     sarestart
1835     sem_timedwait
1836     sync_val_compare_and_swap
1837 "
1838 HAVE_LIST_CMDLINE="
1839     inline_asm
1840     symver
1841     yasm
1842 "
1843
1844 HAVE_LIST_PUB="
1845     bigendian
1846     fast_unaligned
1847 "
1848
1849 HEADERS_LIST="
1850     alsa_asoundlib_h
1851     altivec_h
1852     arpa_inet_h
1853     asm_types_h
1854     cdio_paranoia_h
1855     cdio_paranoia_paranoia_h
1856     cuda_h
1857     d3d11_h
1858     dispatch_dispatch_h
1859     dev_bktr_ioctl_bt848_h
1860     dev_bktr_ioctl_meteor_h
1861     dev_ic_bt8xx_h
1862     dev_video_bktr_ioctl_bt848_h
1863     dev_video_meteor_ioctl_meteor_h
1864     direct_h
1865     dirent_h
1866     dlfcn_h
1867     dxva_h
1868     ES2_gl_h
1869     gsm_h
1870     io_h
1871     mach_mach_time_h
1872     machine_ioctl_bt848_h
1873     machine_ioctl_meteor_h
1874     malloc_h
1875     opencv2_core_core_c_h
1876     openjpeg_2_1_openjpeg_h
1877     openjpeg_2_0_openjpeg_h
1878     openjpeg_1_5_openjpeg_h
1879     OpenGL_gl3_h
1880     poll_h
1881     sndio_h
1882     soundcard_h
1883     stdatomic_h
1884     sys_mman_h
1885     sys_param_h
1886     sys_resource_h
1887     sys_select_h
1888     sys_soundcard_h
1889     sys_time_h
1890     sys_un_h
1891     sys_videoio_h
1892     termios_h
1893     udplite_h
1894     unistd_h
1895     valgrind_valgrind_h
1896     windows_h
1897     winsock2_h
1898 "
1899
1900 INTRINSICS_LIST="
1901     intrinsics_neon
1902 "
1903
1904 COMPLEX_FUNCS="
1905     cabs
1906     cexp
1907 "
1908
1909 MATH_FUNCS="
1910     atanf
1911     atan2f
1912     cbrt
1913     cbrtf
1914     copysign
1915     cosf
1916     erf
1917     exp2
1918     exp2f
1919     expf
1920     hypot
1921     isfinite
1922     isinf
1923     isnan
1924     ldexpf
1925     llrint
1926     llrintf
1927     log2
1928     log2f
1929     log10f
1930     lrint
1931     lrintf
1932     powf
1933     rint
1934     round
1935     roundf
1936     sinf
1937     trunc
1938     truncf
1939 "
1940
1941 SYSTEM_FUNCS="
1942     access
1943     aligned_malloc
1944     arc4random
1945     clock_gettime
1946     closesocket
1947     CommandLineToArgvW
1948     CoTaskMemFree
1949     CryptGenRandom
1950     dlopen
1951     fcntl
1952     flt_lim
1953     fork
1954     getaddrinfo
1955     gethrtime
1956     getopt
1957     GetProcessAffinityMask
1958     GetProcessMemoryInfo
1959     GetProcessTimes
1960     getrusage
1961     GetSystemTimeAsFileTime
1962     gettimeofday
1963     glob
1964     glXGetProcAddress
1965     gmtime_r
1966     inet_aton
1967     isatty
1968     jack_port_get_latency_range
1969     kbhit
1970     LoadLibrary
1971     localtime_r
1972     lstat
1973     lzo1x_999_compress
1974     mach_absolute_time
1975     MapViewOfFile
1976     memalign
1977     mkstemp
1978     mmap
1979     mprotect
1980     nanosleep
1981     PeekNamedPipe
1982     posix_memalign
1983     pthread_cancel
1984     sched_getaffinity
1985     SetConsoleTextAttribute
1986     SetConsoleCtrlHandler
1987     setmode
1988     setrlimit
1989     Sleep
1990     strerror_r
1991     sysconf
1992     sysctl
1993     usleep
1994     UTGetOSTypeFromString
1995     VirtualAlloc
1996     wglGetProcAddress
1997 "
1998
1999 TOOLCHAIN_FEATURES="
2000     as_dn_directive
2001     as_fpu_directive
2002     as_func
2003     as_object_arch
2004     asm_mod_q
2005     attribute_may_alias
2006     attribute_packed
2007     ebp_available
2008     ebx_available
2009     gnu_as
2010     gnu_windres
2011     ibm_asm
2012     inline_asm_direct_symbol_refs
2013     inline_asm_labels
2014     inline_asm_nonlocal_labels
2015     pragma_deprecated
2016     rsync_contimeout
2017     symver_asm_label
2018     symver_gnu_asm
2019     vfp_args
2020     xform_asm
2021     xmm_clobbers
2022 "
2023
2024 TYPES_LIST="
2025     CONDITION_VARIABLE_Ptr
2026     socklen_t
2027     struct_addrinfo
2028     struct_group_source_req
2029     struct_ip_mreq_source
2030     struct_ipv6_mreq
2031     struct_msghdr_msg_flags
2032     struct_pollfd
2033     struct_rusage_ru_maxrss
2034     struct_sctp_event_subscribe
2035     struct_sockaddr_in6
2036     struct_sockaddr_sa_len
2037     struct_sockaddr_storage
2038     struct_stat_st_mtim_tv_nsec
2039     struct_v4l2_frmivalenum_discrete
2040 "
2041
2042 HAVE_LIST="
2043     $ARCH_EXT_LIST
2044     $(add_suffix _external $ARCH_EXT_LIST)
2045     $(add_suffix _inline   $ARCH_EXT_LIST)
2046     $ARCH_FEATURES
2047     $ATOMICS_LIST
2048     $BUILTIN_LIST
2049     $COMPLEX_FUNCS
2050     $HAVE_LIST_CMDLINE
2051     $HAVE_LIST_PUB
2052     $HEADERS_LIST
2053     $INTRINSICS_LIST
2054     $MATH_FUNCS
2055     $SYSTEM_FUNCS
2056     $THREADS_LIST
2057     $TOOLCHAIN_FEATURES
2058     $TYPES_LIST
2059     alsa
2060     atomics_native
2061     dos_paths
2062     dxva2_lib
2063     dxva2api_cobj
2064     jack
2065     libc_msvcrt
2066     makeinfo
2067     makeinfo_html
2068     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2069     perl
2070     pod2man
2071     sdl2
2072     section_data_rel_ro
2073     sndio
2074     texi2html
2075     threads
2076     vaapi_drm
2077     vaapi_x11
2078     vdpau_x11
2079     winrt
2080 "
2081
2082 # options emitted with CONFIG_ prefix but not available on the command line
2083 CONFIG_EXTRA="
2084     aandcttables
2085     ac3dsp
2086     audio_frame_queue
2087     audiodsp
2088     blockdsp
2089     bswapdsp
2090     cabac
2091     dirac_parse
2092     dvprofile
2093     exif
2094     faandct
2095     faanidct
2096     fdctdsp
2097     flacdsp
2098     fmtconvert
2099     frame_thread_encoder
2100     g722dsp
2101     golomb
2102     gplv3
2103     h263dsp
2104     h264chroma
2105     h264dsp
2106     h264parse
2107     h264pred
2108     h264qpel
2109     hevcparse
2110     hpeldsp
2111     huffman
2112     huffyuvdsp
2113     huffyuvencdsp
2114     idctdsp
2115     iirfilter
2116     mdct15
2117     intrax8
2118     iso_media
2119     ividsp
2120     jpegtables
2121     lgplv3
2122     libx262
2123     llauddsp
2124     llviddsp
2125     llvidencdsp
2126     lpc
2127     lzf
2128     me_cmp
2129     mpeg_er
2130     mpegaudio
2131     mpegaudiodsp
2132     mpegaudioheader
2133     mpegvideo
2134     mpegvideoenc
2135     mss34dsp
2136     pixblockdsp
2137     qpeldsp
2138     qsv
2139     qsvdec
2140     qsvenc
2141     rangecoder
2142     riffdec
2143     riffenc
2144     rtpdec
2145     rtpenc_chain
2146     rv34dsp
2147     sinewin
2148     snappy
2149     srtp
2150     startcode
2151     texturedsp
2152     texturedspenc
2153     tpeldsp
2154     vaapi_encode
2155     vc1dsp
2156     videodsp
2157     vp3dsp
2158     vp56dsp
2159     vp8dsp
2160     vt_bt2020
2161     wma_freqs
2162     wmv2dsp
2163 "
2164
2165 CMDLINE_SELECT="
2166     $ARCH_EXT_LIST
2167     $CONFIG_LIST
2168     $HAVE_LIST_CMDLINE
2169     $THREADS_LIST
2170     asm
2171     cross_compile
2172     debug
2173     extra_warnings
2174     logging
2175     lto
2176     optimizations
2177     rpath
2178     stripping
2179 "
2180
2181 PATHS_LIST="
2182     bindir
2183     datadir
2184     docdir
2185     incdir
2186     libdir
2187     mandir
2188     pkgconfigdir
2189     prefix
2190     shlibdir
2191     install_name_dir
2192 "
2193
2194 CMDLINE_SET="
2195     $PATHS_LIST
2196     ar
2197     arch
2198     as
2199     assert_level
2200     build_suffix
2201     cc
2202     objcc
2203     cpu
2204     cross_prefix
2205     custom_allocator
2206     cxx
2207     dep_cc
2208     doxygen
2209     env
2210     extra_version
2211     gas
2212     host_cc
2213     host_cflags
2214     host_extralibs
2215     host_ld
2216     host_ldflags
2217     host_os
2218     ignore_tests
2219     install
2220     ld
2221     ln_s
2222     logfile
2223     malloc_prefix
2224     nm
2225     optflags
2226     nvccflags
2227     pkg_config
2228     pkg_config_flags
2229     progs_suffix
2230     random_seed
2231     ranlib
2232     samples
2233     strip
2234     sws_max_filter_size
2235     sysinclude
2236     sysroot
2237     target_exec
2238     target_os
2239     target_path
2240     target_samples
2241     tempprefix
2242     toolchain
2243     valgrind
2244     yasmexe
2245 "
2246
2247 CMDLINE_APPEND="
2248     extra_cflags
2249     extra_cxxflags
2250     extra_objcflags
2251     host_cppflags
2252 "
2253
2254 # code dependency declarations
2255
2256 # architecture extensions
2257
2258 armv5te_deps="arm"
2259 armv6_deps="arm"
2260 armv6t2_deps="arm"
2261 armv8_deps="aarch64"
2262 neon_deps_any="aarch64 arm"
2263 intrinsics_neon_deps="neon"
2264 vfp_deps_any="aarch64 arm"
2265 vfpv3_deps="vfp"
2266 setend_deps="arm"
2267
2268 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2269
2270 loongson2_deps="mips"
2271 loongson3_deps="mips"
2272 mipsfpu_deps="mips"
2273 mipsdsp_deps="mips"
2274 mipsdspr2_deps="mips"
2275 mips32r2_deps="mips"
2276 mips32r5_deps="mips"
2277 mips32r6_deps="mips"
2278 mips64r2_deps="mips"
2279 mips64r6_deps="mips"
2280 msa_deps="mipsfpu"
2281 mmi_deps="mips"
2282
2283 altivec_deps="ppc"
2284 dcbzl_deps="ppc"
2285 ldbrx_deps="ppc"
2286 ppc4xx_deps="ppc"
2287 vsx_deps="altivec"
2288 power8_deps="vsx"
2289
2290 cpunop_deps="i686"
2291 x86_64_select="i686"
2292 x86_64_suggest="fast_cmov"
2293
2294 amd3dnow_deps="mmx"
2295 amd3dnowext_deps="amd3dnow"
2296 i686_deps="x86"
2297 mmx_deps="x86"
2298 mmxext_deps="mmx"
2299 sse_deps="mmxext"
2300 sse2_deps="sse"
2301 sse3_deps="sse2"
2302 ssse3_deps="sse3"
2303 sse4_deps="ssse3"
2304 sse42_deps="sse4"
2305 aesni_deps="sse42"
2306 avx_deps="sse42"
2307 xop_deps="avx"
2308 fma3_deps="avx"
2309 fma4_deps="avx"
2310 avx2_deps="avx"
2311
2312 mmx_external_deps="yasm"
2313 mmx_inline_deps="inline_asm"
2314 mmx_suggest="mmx_external mmx_inline"
2315
2316 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2317     eval dep=\$${ext}_deps
2318     eval ${ext}_external_deps='"${dep}_external"'
2319     eval ${ext}_inline_deps='"${dep}_inline"'
2320     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2321 done
2322
2323 aligned_stack_if_any="aarch64 ppc x86"
2324 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2325 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2326 fast_unaligned_if_any="aarch64 ppc x86"
2327 simd_align_16_if_any="altivec neon sse"
2328 simd_align_32_if_any="avx"
2329
2330 # system capabilities
2331 symver_if_any="symver_asm_label symver_gnu_asm"
2332 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2333
2334 # threading support
2335 atomics_gcc_if="sync_val_compare_and_swap"
2336 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2337 atomics_win32_if="MemoryBarrier"
2338 atomics_native_if_any="$ATOMICS_LIST"
2339 w32threads_deps="atomics_native"
2340 threads_if_any="$THREADS_LIST"
2341
2342 # subsystems
2343 dct_select="rdft"
2344 dirac_parse_select="golomb"
2345 error_resilience_select="me_cmp"
2346 faandct_deps="faan fdctdsp"
2347 faanidct_deps="faan idctdsp"
2348 h264dsp_select="startcode"
2349 hevcparse_select="golomb"
2350 frame_thread_encoder_deps="encoders threads"
2351 intrax8_select="blockdsp idctdsp"
2352 mdct_select="fft"
2353 mdct15_select="fft"
2354 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2355 mpeg_er_select="error_resilience"
2356 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2357 mpegaudiodsp_select="dct"
2358 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2359 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2360 vc1dsp_select="h264chroma qpeldsp startcode"
2361 rdft_select="fft"
2362
2363 # decoders / encoders
2364 aac_decoder_select="mdct15 mdct sinewin"
2365 aac_fixed_decoder_select="mdct sinewin"
2366 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2367 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2368 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2369 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2370 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2371 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2372 adpcm_g722_decoder_select="g722dsp"
2373 adpcm_g722_encoder_select="g722dsp"
2374 aic_decoder_select="golomb idctdsp"
2375 alac_encoder_select="lpc"
2376 als_decoder_select="bswapdsp"
2377 amrnb_decoder_select="lsp"
2378 amrwb_decoder_select="lsp"
2379 amv_decoder_select="sp5x_decoder exif"
2380 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2381 ape_decoder_select="bswapdsp llauddsp"
2382 apng_decoder_select="zlib"
2383 apng_encoder_select="llvidencdsp zlib"
2384 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2385 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2386 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2387 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2388 atrac1_decoder_select="mdct sinewin"
2389 atrac3_decoder_select="mdct"
2390 atrac3p_decoder_select="mdct sinewin"
2391 avrn_decoder_select="exif jpegtables"
2392 bink_decoder_select="blockdsp hpeldsp"
2393 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2394 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2395 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2396 cllc_decoder_select="bswapdsp"
2397 comfortnoise_encoder_select="lpc"
2398 cook_decoder_select="audiodsp mdct sinewin"
2399 cscd_decoder_select="lzo"
2400 cscd_decoder_suggest="zlib"
2401 dca_decoder_select="mdct"
2402 dds_decoder_select="texturedsp"
2403 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2404 dnxhd_decoder_select="blockdsp idctdsp"
2405 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2406 dvvideo_decoder_select="dvprofile idctdsp"
2407 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2408 dxa_decoder_select="zlib"
2409 dxv_decoder_select="lzf texturedsp"
2410 eac3_decoder_select="ac3_decoder"
2411 eac3_encoder_select="ac3_encoder"
2412 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2413 eatgq_decoder_select="aandcttables"
2414 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2415 exr_decoder_select="zlib"
2416 ffv1_decoder_select="rangecoder"
2417 ffv1_encoder_select="rangecoder"
2418 ffvhuff_decoder_select="huffyuv_decoder"
2419 ffvhuff_encoder_select="huffyuv_encoder"
2420 fic_decoder_select="golomb"
2421 flac_decoder_select="flacdsp"
2422 flac_encoder_select="bswapdsp flacdsp lpc"
2423 flashsv2_decoder_select="zlib"
2424 flashsv2_encoder_select="zlib"
2425 flashsv_decoder_select="zlib"
2426 flashsv_encoder_select="zlib"
2427 flv_decoder_select="h263_decoder"
2428 flv_encoder_select="h263_encoder"
2429 fourxm_decoder_select="blockdsp bswapdsp"
2430 fraps_decoder_select="bswapdsp huffman"
2431 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2432 g729_decoder_select="audiodsp"
2433 h261_decoder_select="mpegvideo"
2434 h261_encoder_select="aandcttables mpegvideoenc"
2435 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2436 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2437 h263i_decoder_select="h263_decoder"
2438 h263p_decoder_select="h263_decoder"
2439 h263p_encoder_select="h263_encoder"
2440 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2441 h264_decoder_suggest="error_resilience"
2442 hap_decoder_select="snappy texturedsp"
2443 hap_encoder_deps="libsnappy"
2444 hap_encoder_select="texturedspenc"
2445 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2446 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2447 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2448 iac_decoder_select="imc_decoder"
2449 imc_decoder_select="bswapdsp fft mdct sinewin"
2450 indeo3_decoder_select="hpeldsp"
2451 indeo4_decoder_select="ividsp"
2452 indeo5_decoder_select="ividsp"
2453 interplay_video_decoder_select="hpeldsp"
2454 jpegls_decoder_select="mjpeg_decoder"
2455 jv_decoder_select="blockdsp"
2456 lagarith_decoder_select="llviddsp"
2457 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2458 magicyuv_decoder_select="llviddsp"
2459 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2460 metasound_decoder_select="lsp mdct sinewin"
2461 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2462 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2463 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2464 mjpegb_decoder_select="mjpeg_decoder"
2465 mlp_decoder_select="mlp_parser"
2466 mlp_encoder_select="lpc"
2467 motionpixels_decoder_select="bswapdsp"
2468 mp1_decoder_select="mpegaudio"
2469 mp1float_decoder_select="mpegaudio"
2470 mp2_decoder_select="mpegaudio"
2471 mp2float_decoder_select="mpegaudio"
2472 mp3_decoder_select="mpegaudio"
2473 mp3adu_decoder_select="mpegaudio"
2474 mp3adufloat_decoder_select="mpegaudio"
2475 mp3float_decoder_select="mpegaudio"
2476 mp3on4_decoder_select="mpegaudio"
2477 mp3on4float_decoder_select="mpegaudio"
2478 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2479 mpc8_decoder_select="mpegaudiodsp"
2480 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2481 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2482 mpegvideo_decoder_select="mpegvideo"
2483 mpeg1video_decoder_select="mpegvideo"
2484 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2485 mpeg2video_decoder_select="mpegvideo"
2486 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2487 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2488 mpeg4_encoder_select="h263_encoder"
2489 msa1_decoder_select="mss34dsp"
2490 mscc_decoder_select="zlib"
2491 msmpeg4v1_decoder_select="h263_decoder"
2492 msmpeg4v2_decoder_select="h263_decoder"
2493 msmpeg4v2_encoder_select="h263_encoder"
2494 msmpeg4v3_decoder_select="h263_decoder"
2495 msmpeg4v3_encoder_select="h263_encoder"
2496 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2497 mts2_decoder_select="mss34dsp"
2498 mxpeg_decoder_select="mjpeg_decoder"
2499 nellymoser_decoder_select="mdct sinewin"
2500 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2501 nuv_decoder_select="idctdsp lzo"
2502 on2avc_decoder_select="mdct"
2503 opus_decoder_deps="swresample"
2504 opus_decoder_select="mdct15"
2505 opus_encoder_select="audio_frame_queue mdct15"
2506 png_decoder_select="zlib"
2507 png_encoder_select="llvidencdsp zlib"
2508 prores_decoder_select="blockdsp idctdsp"
2509 prores_encoder_select="fdctdsp"
2510 qcelp_decoder_select="lsp"
2511 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2512 ra_144_decoder_select="audiodsp"
2513 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2514 ralf_decoder_select="golomb"
2515 rawvideo_decoder_select="bswapdsp"
2516 rscc_decoder_select="zlib"
2517 rtjpeg_decoder_select="me_cmp"
2518 rv10_decoder_select="h263_decoder"
2519 rv10_encoder_select="h263_encoder"
2520 rv20_decoder_select="h263_decoder"
2521 rv20_encoder_select="h263_encoder"
2522 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2523 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2524 screenpresso_decoder_select="zlib"
2525 shorten_decoder_select="bswapdsp"
2526 sipr_decoder_select="lsp"
2527 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2528 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2529 sonic_decoder_select="golomb rangecoder"
2530 sonic_encoder_select="golomb rangecoder"
2531 sonic_ls_encoder_select="golomb rangecoder"
2532 sp5x_decoder_select="mjpeg_decoder"
2533 srgc_decoder_select="zlib"
2534 svq1_decoder_select="hpeldsp"
2535 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2536 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2537 svq3_decoder_suggest="zlib"
2538 tak_decoder_select="audiodsp"
2539 tdsc_decoder_select="zlib mjpeg_decoder"
2540 theora_decoder_select="vp3_decoder"
2541 thp_decoder_select="mjpeg_decoder"
2542 tiff_decoder_suggest="zlib lzma"
2543 tiff_encoder_suggest="zlib"
2544 truehd_decoder_select="mlp_parser"
2545 truehd_encoder_select="lpc"
2546 truemotion2_decoder_select="bswapdsp"
2547 truespeech_decoder_select="bswapdsp"
2548 tscc_decoder_select="zlib"
2549 twinvq_decoder_select="mdct lsp sinewin"
2550 txd_decoder_select="texturedsp"
2551 utvideo_decoder_select="bswapdsp llviddsp"
2552 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2553 vble_decoder_select="llviddsp"
2554 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2555 vc1_qsv_decoder_deps="libmfx"
2556 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2557 vc1image_decoder_select="vc1_decoder"
2558 vorbis_decoder_select="mdct"
2559 vorbis_encoder_select="mdct"
2560 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2561 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2562 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2563 vp6a_decoder_select="vp6_decoder"
2564 vp6f_decoder_select="vp6_decoder"
2565 vp7_decoder_select="h264pred videodsp vp8dsp"
2566 vp8_decoder_select="h264pred videodsp vp8dsp"
2567 vp9_decoder_select="videodsp vp9_parser"
2568 webp_decoder_select="vp8_decoder exif"
2569 wmalossless_decoder_select="llauddsp"
2570 wmapro_decoder_select="mdct sinewin wma_freqs"
2571 wmav1_decoder_select="mdct sinewin wma_freqs"
2572 wmav1_encoder_select="mdct sinewin wma_freqs"
2573 wmav2_decoder_select="mdct sinewin wma_freqs"
2574 wmav2_encoder_select="mdct sinewin wma_freqs"
2575 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2576 wmv1_decoder_select="h263_decoder"
2577 wmv1_encoder_select="h263_encoder"
2578 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2579 wmv2_encoder_select="h263_encoder wmv2dsp"
2580 wmv3_decoder_select="vc1_decoder"
2581 wmv3image_decoder_select="wmv3_decoder"
2582 xma1_decoder_select="wmapro_decoder"
2583 xma2_decoder_select="wmapro_decoder"
2584 zerocodec_decoder_select="zlib"
2585 zlib_decoder_select="zlib"
2586 zlib_encoder_select="zlib"
2587 zmbv_decoder_select="zlib"
2588 zmbv_encoder_select="zlib"
2589
2590 # platform codecs
2591 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2592 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2593
2594 # hardware accelerators
2595 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2596 cuda_deps_any="dlopen LoadLibrary"
2597 cuvid_deps="cuda"
2598 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2599 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2600 dxva2_extralibs="-luser32"
2601 dxva2_lib_deps="dxva2"
2602 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2603 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2604 vda_deps="vda_framework pthreads"
2605 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2606 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2607 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2608 xvmc_deps="X11_extensions_XvMClib_h"
2609
2610 h263_vaapi_hwaccel_deps="vaapi"
2611 h263_vaapi_hwaccel_select="h263_decoder"
2612 h263_videotoolbox_hwaccel_deps="videotoolbox"
2613 h263_videotoolbox_hwaccel_select="h263_decoder"
2614 h264_cuvid_hwaccel_deps="cuda cuvid"
2615 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2616 h264_d3d11va_hwaccel_deps="d3d11va"
2617 h264_d3d11va_hwaccel_select="h264_decoder"
2618 h264_dxva2_hwaccel_deps="dxva2"
2619 h264_dxva2_hwaccel_select="h264_decoder"
2620 h264_mediacodec_hwaccel_deps="mediacodec"
2621 h264_mmal_hwaccel_deps="mmal"
2622 h264_qsv_hwaccel_deps="libmfx"
2623 h264_vaapi_hwaccel_deps="vaapi"
2624 h264_vaapi_hwaccel_select="h264_decoder"
2625 h264_vda_hwaccel_deps="vda"
2626 h264_vda_hwaccel_select="h264_decoder"
2627 h264_vda_old_hwaccel_deps="vda"
2628 h264_vda_old_hwaccel_select="h264_decoder"
2629 h264_vdpau_hwaccel_deps="vdpau"
2630 h264_vdpau_hwaccel_select="h264_decoder"
2631 h264_videotoolbox_hwaccel_deps="videotoolbox"
2632 h264_videotoolbox_hwaccel_select="h264_decoder"
2633 hevc_cuvid_hwaccel_deps="cuda cuvid"
2634 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2635 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2636 hevc_d3d11va_hwaccel_select="hevc_decoder"
2637 hevc_mediacodec_hwaccel_deps="mediacodec"
2638 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2639 hevc_dxva2_hwaccel_select="hevc_decoder"
2640 hevc_qsv_hwaccel_deps="libmfx"
2641 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2642 hevc_vaapi_hwaccel_select="hevc_decoder"
2643 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2644 hevc_vdpau_hwaccel_select="hevc_decoder"
2645 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2646 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2647 mpeg_xvmc_hwaccel_deps="xvmc"
2648 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2649 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2650 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2651 mpeg1_vdpau_hwaccel_deps="vdpau"
2652 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2653 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2654 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2655 mpeg1_xvmc_hwaccel_deps="xvmc"
2656 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2657 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2658 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2659 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2660 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_dxva2_hwaccel_deps="dxva2"
2662 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_mmal_hwaccel_deps="mmal"
2664 mpeg2_qsv_hwaccel_deps="libmfx"
2665 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2666 mpeg2_vaapi_hwaccel_deps="vaapi"
2667 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_vdpau_hwaccel_deps="vdpau"
2669 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2671 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_xvmc_hwaccel_deps="xvmc"
2673 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2674 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2675 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2676 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2677 mpeg4_mmal_hwaccel_deps="mmal"
2678 mpeg4_vaapi_hwaccel_deps="vaapi"
2679 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2680 mpeg4_vdpau_hwaccel_deps="vdpau"
2681 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2682 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2683 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2684 vc1_cuvid_hwaccel_deps="cuda cuvid"
2685 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2686 vc1_d3d11va_hwaccel_deps="d3d11va"
2687 vc1_d3d11va_hwaccel_select="vc1_decoder"
2688 vc1_dxva2_hwaccel_deps="dxva2"
2689 vc1_dxva2_hwaccel_select="vc1_decoder"
2690 vc1_mmal_hwaccel_deps="mmal"
2691 vc1_qsv_hwaccel_deps="libmfx"
2692 vc1_qsv_hwaccel_select="qsvdec_vc1"
2693 vc1_vaapi_hwaccel_deps="vaapi"
2694 vc1_vaapi_hwaccel_select="vc1_decoder"
2695 vc1_vdpau_hwaccel_deps="vdpau"
2696 vc1_vdpau_hwaccel_select="vc1_decoder"
2697 vp8_cuvid_hwaccel_deps="cuda cuvid"
2698 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2699 vp9_cuvid_hwaccel_deps="cuda cuvid"
2700 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2701 vp8_mediacodec_hwaccel_deps="mediacodec"
2702 vp8_qsv_hwaccel_deps="libmfx"
2703 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2704 vp9_d3d11va_hwaccel_select="vp9_decoder"
2705 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2706 vp9_dxva2_hwaccel_select="vp9_decoder"
2707 vp9_mediacodec_hwaccel_deps="mediacodec"
2708 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2709 vp9_vaapi_hwaccel_select="vp9_decoder"
2710 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2711 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2712 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2713 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2714
2715 # hardware-accelerated codecs
2716 omx_deps="dlopen pthreads"
2717 omx_extralibs='$ldl'
2718 omx_rpi_select="omx"
2719 qsvdec_select="qsv"
2720 qsvenc_select="qsv"
2721 vaapi_encode_deps="vaapi"
2722
2723 hwupload_cuda_filter_deps="cuda"
2724 scale_npp_filter_deps="cuda_sdk libnpp"
2725 scale_cuda_filter_deps="cuda_sdk"
2726
2727 nvenc_deps="cuda"
2728 nvenc_deps_any="dlopen LoadLibrary"
2729 nvenc_encoder_deps="nvenc"
2730
2731 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2732 h264_cuvid_decoder_deps="cuda cuvid"
2733 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2734 h264_mediacodec_decoder_deps="mediacodec"
2735 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2736 h264_mmal_decoder_deps="mmal"
2737 h264_nvenc_encoder_deps="nvenc"
2738 h264_omx_encoder_deps="omx"
2739 h264_qsv_decoder_deps="libmfx"
2740 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2741 h264_qsv_encoder_deps="libmfx"
2742 h264_qsv_encoder_select="qsvenc"
2743 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2744 h264_vaapi_encoder_select="vaapi_encode golomb"
2745 h264_vda_decoder_deps="vda"
2746 h264_vda_decoder_select="h264_decoder"
2747 h264_vdpau_decoder_deps="vdpau"
2748 h264_vdpau_decoder_select="h264_decoder"
2749 hevc_cuvid_decoder_deps="cuda cuvid"
2750 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2751 hevc_mediacodec_decoder_deps="mediacodec"
2752 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2753 hevc_nvenc_encoder_deps="nvenc"
2754 hevc_qsv_decoder_deps="libmfx"
2755 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2756 hevc_qsv_encoder_deps="libmfx"
2757 hevc_qsv_encoder_select="hevcparse qsvenc"
2758 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2759 hevc_vaapi_encoder_select="vaapi_encode golomb"
2760 mjpeg_cuvid_decoder_deps="cuda cuvid"
2761 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2762 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2763 mpeg1_cuvid_decoder_deps="cuda cuvid"
2764 mpeg1_vdpau_decoder_deps="vdpau"
2765 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2766 mpeg2_crystalhd_decoder_select="crystalhd"
2767 mpeg2_cuvid_decoder_deps="cuda cuvid"
2768 mpeg2_mmal_decoder_deps="mmal"
2769 mpeg2_qsv_decoder_deps="libmfx"
2770 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2771 mpeg2_qsv_encoder_deps="libmfx"
2772 mpeg2_qsv_encoder_select="qsvenc"
2773 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2774 mpeg2_vaapi_encoder_select="vaapi_encode"
2775 mpeg4_crystalhd_decoder_select="crystalhd"
2776 mpeg4_cuvid_decoder_deps="cuda cuvid"
2777 mpeg4_mediacodec_decoder_deps="mediacodec"
2778 mpeg4_mmal_decoder_deps="mmal"
2779 mpeg4_omx_encoder_deps="omx"
2780 mpeg4_vdpau_decoder_deps="vdpau"
2781 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2782 mpeg_vdpau_decoder_deps="vdpau"
2783 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2784 msmpeg4_crystalhd_decoder_select="crystalhd"
2785 nvenc_h264_encoder_select="h264_nvenc_encoder"
2786 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2787 vc1_crystalhd_decoder_select="crystalhd"
2788 vc1_cuvid_decoder_deps="cuda cuvid"
2789 vc1_mmal_decoder_deps="mmal"
2790 vc1_vdpau_decoder_deps="vdpau"
2791 vc1_vdpau_decoder_select="vc1_decoder"
2792 vp8_cuvid_decoder_deps="cuda cuvid"
2793 vp8_mediacodec_decoder_deps="mediacodec"
2794 vp8_qsv_decoder_deps="libmfx"
2795 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2796 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2797 vp8_vaapi_encoder_select="vaapi_encode"
2798 vp9_cuvid_decoder_deps="cuda cuvid"
2799 vp9_mediacodec_decoder_deps="mediacodec"
2800 wmv3_crystalhd_decoder_select="crystalhd"
2801 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2802
2803 # parsers
2804 h264_parser_select="golomb h264dsp h264parse"
2805 hevc_parser_select="hevcparse"
2806 mpegaudio_parser_select="mpegaudioheader"
2807 mpegvideo_parser_select="mpegvideo"
2808 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2809 vc1_parser_select="vc1dsp"
2810
2811 # bitstream_filters
2812 mjpeg2jpeg_bsf_select="jpegtables"
2813
2814 # external libraries
2815 aac_at_decoder_deps="audiotoolbox"
2816 ac3_at_decoder_deps="audiotoolbox"
2817 ac3_at_decoder_select="ac3_parser"
2818 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2819 alac_at_decoder_deps="audiotoolbox"
2820 amr_nb_at_decoder_deps="audiotoolbox"
2821 avisynth_deps_any="dlopen LoadLibrary"
2822 avisynth_demuxer_deps="avisynth"
2823 avisynth_demuxer_select="riffdec"
2824 eac3_at_decoder_deps="audiotoolbox"
2825 eac3_at_decoder_select="ac3_parser"
2826 gsm_ms_at_decoder_deps="audiotoolbox"
2827 ilbc_at_decoder_deps="audiotoolbox"
2828 mp1_at_decoder_deps="audiotoolbox"
2829 mp2_at_decoder_deps="audiotoolbox"
2830 mp3_at_decoder_deps="audiotoolbox"
2831 mp1_at_decoder_select="mpegaudioheader"
2832 mp2_at_decoder_select="mpegaudioheader"
2833 mp3_at_decoder_select="mpegaudioheader"
2834 pcm_alaw_at_decoder_deps="audiotoolbox"
2835 pcm_mulaw_at_decoder_deps="audiotoolbox"
2836 qdmc_at_decoder_deps="audiotoolbox"
2837 qdm2_at_decoder_deps="audiotoolbox"
2838 aac_at_encoder_deps="audiotoolbox"
2839 aac_at_encoder_select="audio_frame_queue"
2840 alac_at_encoder_deps="audiotoolbox"
2841 alac_at_encoder_select="audio_frame_queue"
2842 ilbc_at_encoder_deps="audiotoolbox"
2843 ilbc_at_encoder_select="audio_frame_queue"
2844 pcm_alaw_at_encoder_deps="audiotoolbox"
2845 pcm_alaw_at_encoder_select="audio_frame_queue"
2846 pcm_mulaw_at_encoder_deps="audiotoolbox"
2847 pcm_mulaw_at_encoder_select="audio_frame_queue"
2848 chromaprint_muxer_deps="chromaprint"
2849 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2850 libcelt_decoder_deps="libcelt"
2851 libfdk_aac_decoder_deps="libfdk_aac"
2852 libfdk_aac_encoder_deps="libfdk_aac"
2853 libfdk_aac_encoder_select="audio_frame_queue"
2854 libgme_demuxer_deps="libgme"
2855 libgsm_decoder_deps="libgsm"
2856 libgsm_encoder_deps="libgsm"
2857 libgsm_ms_decoder_deps="libgsm"
2858 libgsm_ms_encoder_deps="libgsm"
2859 libilbc_decoder_deps="libilbc"
2860 libilbc_encoder_deps="libilbc"
2861 libkvazaar_encoder_deps="libkvazaar"
2862 libmodplug_demuxer_deps="libmodplug"
2863 libmp3lame_encoder_deps="libmp3lame"
2864 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2865 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2866 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2867 libopencore_amrnb_encoder_select="audio_frame_queue"
2868 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2869 libopenh264_decoder_deps="libopenh264"
2870 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2871 libopenh264_encoder_deps="libopenh264"
2872 libopenjpeg_decoder_deps="libopenjpeg"
2873 libopenjpeg_encoder_deps="libopenjpeg"
2874 libopenmpt_demuxer_deps="libopenmpt"
2875 libopus_decoder_deps="libopus"
2876 libopus_encoder_deps="libopus"
2877 libopus_encoder_select="audio_frame_queue"
2878 libschroedinger_decoder_deps="libschroedinger"
2879 libschroedinger_encoder_deps="libschroedinger"
2880 libshine_encoder_deps="libshine"
2881 libshine_encoder_select="audio_frame_queue"
2882 libspeex_decoder_deps="libspeex"
2883 libspeex_encoder_deps="libspeex"
2884 libspeex_encoder_select="audio_frame_queue"
2885 libtheora_encoder_deps="libtheora"
2886 libtwolame_encoder_deps="libtwolame"
2887 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2888 libvorbis_decoder_deps="libvorbis"
2889 libvorbis_encoder_deps="libvorbis"
2890 libvorbis_encoder_select="audio_frame_queue"
2891 libvpx_vp8_decoder_deps="libvpx"
2892 libvpx_vp8_encoder_deps="libvpx"
2893 libvpx_vp9_decoder_deps="libvpx"
2894 libvpx_vp9_encoder_deps="libvpx"
2895 libwavpack_encoder_deps="libwavpack"
2896 libwavpack_encoder_select="audio_frame_queue"
2897 libwebp_encoder_deps="libwebp"
2898 libwebp_anim_encoder_deps="libwebp"
2899 libx262_encoder_deps="libx262"
2900 libx264_encoder_deps="libx264"
2901 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2902 libx264rgb_encoder_select="libx264_encoder"
2903 libx265_encoder_deps="libx265"
2904 libxavs_encoder_deps="libxavs"
2905 libxvid_encoder_deps="libxvid"
2906 libzvbi_teletext_decoder_deps="libzvbi"
2907 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2908 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2909 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2910 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2911 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2912
2913 # demuxers / muxers
2914 ac3_demuxer_select="ac3_parser"
2915 aiff_muxer_select="iso_media"
2916 asf_demuxer_select="riffdec"
2917 asf_o_demuxer_select="riffdec"
2918 asf_muxer_select="riffenc"
2919 asf_stream_muxer_select="asf_muxer"
2920 avi_demuxer_select="iso_media riffdec exif"
2921 avi_muxer_select="riffenc"
2922 caf_demuxer_select="iso_media riffdec"
2923 caf_muxer_select="iso_media"
2924 dash_muxer_select="mp4_muxer"
2925 dirac_demuxer_select="dirac_parser"
2926 dts_demuxer_select="dca_parser"
2927 dtshd_demuxer_select="dca_parser"
2928 dv_demuxer_select="dvprofile"
2929 dv_muxer_select="dvprofile"
2930 dxa_demuxer_select="riffdec"
2931 eac3_demuxer_select="ac3_parser"
2932 f4v_muxer_select="mov_muxer"
2933 fifo_muxer_deps="threads"
2934 flac_demuxer_select="flac_parser"
2935 hds_muxer_select="flv_muxer"
2936 hls_muxer_select="mpegts_muxer"
2937 image2_alias_pix_demuxer_select="image2_demuxer"
2938 image2_brender_pix_demuxer_select="image2_demuxer"
2939 ipod_muxer_select="mov_muxer"
2940 ismv_muxer_select="mov_muxer"
2941 libnut_demuxer_deps="libnut"
2942 libnut_muxer_deps="libnut"
2943 matroska_audio_muxer_select="matroska_muxer"
2944 matroska_demuxer_select="iso_media riffdec"
2945 matroska_demuxer_suggest="bzlib lzo zlib"
2946 matroska_muxer_select="iso_media riffenc"
2947 mmf_muxer_select="riffenc"
2948 mov_demuxer_select="iso_media riffdec"
2949 mov_demuxer_suggest="zlib"
2950 mov_muxer_select="iso_media riffenc rtpenc_chain"
2951 mp3_demuxer_select="mpegaudio_parser"
2952 mp3_muxer_select="mpegaudioheader"
2953 mp4_muxer_select="mov_muxer"
2954 mpegts_demuxer_select="iso_media"
2955 mpegts_muxer_select="adts_muxer latm_muxer"
2956 mpegtsraw_demuxer_select="mpegts_demuxer"
2957 mxf_d10_muxer_select="mxf_muxer"
2958 mxf_opatom_muxer_select="mxf_muxer"
2959 nut_muxer_select="riffenc"
2960 nuv_demuxer_select="riffdec"
2961 oga_muxer_select="ogg_muxer"
2962 ogg_demuxer_select="dirac_parse"
2963 ogv_muxer_select="ogg_muxer"
2964 opus_muxer_select="ogg_muxer"
2965 psp_muxer_select="mov_muxer"
2966 rtp_demuxer_select="sdp_demuxer"
2967 rtp_muxer_select="golomb"
2968 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2969 rtsp_demuxer_select="http_protocol rtpdec"
2970 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2971 sap_demuxer_select="sdp_demuxer"
2972 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2973 sdp_demuxer_select="rtpdec"
2974 smoothstreaming_muxer_select="ismv_muxer"
2975 spdif_muxer_select="aac_parser"
2976 spx_muxer_select="ogg_muxer"
2977 swf_demuxer_suggest="zlib"
2978 tak_demuxer_select="tak_parser"
2979 tg2_muxer_select="mov_muxer"
2980 tgp_muxer_select="mov_muxer"
2981 vobsub_demuxer_select="mpegps_demuxer"
2982 w64_demuxer_select="wav_demuxer"
2983 w64_muxer_select="wav_muxer"
2984 wav_demuxer_select="riffdec"
2985 wav_muxer_select="riffenc"
2986 webm_muxer_select="iso_media riffenc"
2987 webm_dash_manifest_demuxer_select="matroska_demuxer"
2988 wtv_demuxer_select="mpegts_demuxer riffdec"
2989 wtv_muxer_select="mpegts_muxer riffenc"
2990 xmv_demuxer_select="riffdec"
2991 xwma_demuxer_select="riffdec"
2992
2993 # indevs / outdevs
2994 alsa_indev_deps="alsa"
2995 alsa_outdev_deps="alsa"
2996 avfoundation_indev_deps="pthreads"
2997 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2998 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2999 caca_outdev_deps="libcaca"
3000 decklink_indev_deps="decklink threads"
3001 decklink_indev_extralibs="-lstdc++"
3002 decklink_outdev_deps="decklink threads"
3003 decklink_outdev_extralibs="-lstdc++"
3004 dshow_indev_deps="IBaseFilter"
3005 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3006 dv1394_indev_deps="dv1394"
3007 dv1394_indev_select="dv_demuxer"
3008 fbdev_indev_deps="linux_fb_h"
3009 fbdev_outdev_deps="linux_fb_h"
3010 gdigrab_indev_deps="CreateDIBSection"
3011 gdigrab_indev_extralibs="-lgdi32"
3012 gdigrab_indev_select="bmp_decoder"
3013 iec61883_indev_deps="libiec61883"
3014 jack_indev_deps="jack"
3015 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3016 lavfi_indev_deps="avfilter"
3017 libcdio_indev_deps="libcdio"
3018 libdc1394_indev_deps="libdc1394"
3019 libv4l2_indev_deps="libv4l2"
3020 openal_indev_deps="openal"
3021 opengl_outdev_deps="opengl"
3022 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3023 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3024 pulse_indev_deps="libpulse"
3025 pulse_outdev_deps="libpulse"
3026 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3027 qtkit_indev_select="qtkit"
3028 sdl2_outdev_deps="sdl2"
3029 sndio_indev_deps="sndio"
3030 sndio_outdev_deps="sndio"
3031 v4l_indev_deps="linux_videodev_h"
3032 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3033 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3034 vfwcap_indev_deps="vfw32 vfwcap_defines"
3035 xcbgrab_indev_deps="libxcb"
3036 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3037 xv_outdev_extralibs="-lXv -lX11 -lXext"
3038
3039 # protocols
3040 async_protocol_deps="threads"
3041 bluray_protocol_deps="libbluray"
3042 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3043 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3044 ffrtmpcrypt_protocol_select="tcp_protocol"
3045 ffrtmphttp_protocol_deps="!librtmp_protocol"
3046 ffrtmphttp_protocol_select="http_protocol"
3047 ftp_protocol_select="tcp_protocol"
3048 gopher_protocol_select="network"
3049 http_protocol_select="tcp_protocol"
3050 httpproxy_protocol_select="tcp_protocol"
3051 https_protocol_select="tls_protocol"
3052 icecast_protocol_select="http_protocol"
3053 librtmp_protocol_deps="librtmp"
3054 librtmpe_protocol_deps="librtmp"
3055 librtmps_protocol_deps="librtmp"
3056 librtmpt_protocol_deps="librtmp"
3057 librtmpte_protocol_deps="librtmp"
3058 libsmbclient_protocol_deps="libsmbclient gplv3"
3059 libssh_protocol_deps="libssh"
3060 mmsh_protocol_select="http_protocol"
3061 mmst_protocol_select="network"
3062 rtmp_protocol_deps="!librtmp_protocol"
3063 rtmp_protocol_select="tcp_protocol"
3064 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3065 rtmps_protocol_deps="!librtmp_protocol"
3066 rtmps_protocol_select="tls_protocol"
3067 rtmpt_protocol_select="ffrtmphttp_protocol"
3068 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3069 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3070 rtp_protocol_select="udp_protocol"
3071 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3072 sctp_protocol_select="network"
3073 srtp_protocol_select="rtp_protocol srtp"
3074 tcp_protocol_select="network"
3075 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3076 tls_gnutls_protocol_select="tcp_protocol"
3077 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3078 tls_openssl_protocol_select="tcp_protocol"
3079 tls_schannel_protocol_deps="schannel"
3080 tls_schannel_protocol_select="tcp_protocol"
3081 tls_securetransport_protocol_deps="securetransport"
3082 tls_securetransport_protocol_select="tcp_protocol"
3083 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3084 udp_protocol_select="network"
3085 udplite_protocol_select="network"
3086 unix_protocol_deps="sys_un_h"
3087 unix_protocol_select="network"
3088
3089 # filters
3090 afftfilt_filter_deps="avcodec"
3091 afftfilt_filter_select="fft"
3092 afir_filter_deps="avcodec"
3093 afir_filter_select="fft"
3094 amovie_filter_deps="avcodec avformat"
3095 aresample_filter_deps="swresample"
3096 ass_filter_deps="libass"
3097 atempo_filter_deps="avcodec"
3098 atempo_filter_select="rdft"
3099 azmq_filter_deps="libzmq"
3100 blackframe_filter_deps="gpl"
3101 boxblur_filter_deps="gpl"
3102 bs2b_filter_deps="libbs2b"
3103 colormatrix_filter_deps="gpl"
3104 cover_rect_filter_deps="avcodec avformat gpl"
3105 cropdetect_filter_deps="gpl"
3106 deinterlace_qsv_filter_deps="libmfx"
3107 deinterlace_vaapi_filter_deps="vaapi"
3108 delogo_filter_deps="gpl"
3109 deshake_filter_select="pixelutils"
3110 drawtext_filter_deps="libfreetype"
3111 elbg_filter_deps="avcodec"
3112 eq_filter_deps="gpl"
3113 fftfilt_filter_deps="avcodec"
3114 fftfilt_filter_select="rdft"
3115 find_rect_filter_deps="avcodec avformat gpl"
3116 firequalizer_filter_deps="avcodec"
3117 firequalizer_filter_select="rdft"
3118 flite_filter_deps="libflite"
3119 framerate_filter_select="pixelutils"
3120 frei0r_filter_deps="frei0r dlopen"
3121 frei0r_src_filter_deps="frei0r dlopen"
3122 fspp_filter_deps="gpl"
3123 geq_filter_deps="gpl"
3124 histeq_filter_deps="gpl"
3125 hqdn3d_filter_deps="gpl"
3126 interlace_filter_deps="gpl"
3127 kerndeint_filter_deps="gpl"
3128 ladspa_filter_deps="ladspa dlopen"
3129 mcdeint_filter_deps="avcodec gpl"
3130 movie_filter_deps="avcodec avformat"
3131 mpdecimate_filter_deps="gpl"
3132 mpdecimate_filter_select="pixelutils"
3133 mptestsrc_filter_deps="gpl"
3134 negate_filter_deps="lut_filter"
3135 nnedi_filter_deps="gpl"
3136 ocr_filter_deps="libtesseract"
3137 ocv_filter_deps="libopencv"
3138 owdenoise_filter_deps="gpl"
3139 pan_filter_deps="swresample"
3140 perspective_filter_deps="gpl"
3141 phase_filter_deps="gpl"
3142 pp7_filter_deps="gpl"
3143 pp_filter_deps="gpl postproc"
3144 pullup_filter_deps="gpl"
3145 removelogo_filter_deps="avcodec avformat swscale"
3146 repeatfields_filter_deps="gpl"
3147 resample_filter_deps="avresample"
3148 rubberband_filter_deps="librubberband"
3149 sab_filter_deps="gpl swscale"
3150 scale2ref_filter_deps="swscale"
3151 scale_filter_deps="swscale"
3152 scale_qsv_filter_deps="libmfx"
3153 select_filter_select="pixelutils"
3154 showcqt_filter_deps="avcodec avformat swscale"
3155 showcqt_filter_select="fft"
3156 showfreqs_filter_deps="avcodec"
3157 showfreqs_filter_select="fft"
3158 showspectrum_filter_deps="avcodec"
3159 showspectrum_filter_select="fft"
3160 showspectrumpic_filter_deps="avcodec"
3161 showspectrumpic_filter_select="fft"
3162 signature_filter_deps="gpl avcodec avformat"
3163 smartblur_filter_deps="gpl swscale"
3164 sofalizer_filter_deps="netcdf avcodec"
3165 sofalizer_filter_select="fft"
3166 spectrumsynth_filter_deps="avcodec"
3167 spectrumsynth_filter_select="fft"
3168 spp_filter_deps="gpl avcodec"
3169 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3170 stereo3d_filter_deps="gpl"
3171 subtitles_filter_deps="avformat avcodec libass"
3172 super2xsai_filter_deps="gpl"
3173 pixfmts_super2xsai_test_deps="super2xsai_filter"
3174 tinterlace_filter_deps="gpl"
3175 tinterlace_merge_test_deps="tinterlace_filter"
3176 tinterlace_pad_test_deps="tinterlace_filter"
3177 uspp_filter_deps="gpl avcodec"
3178 vaguedenoiser_filter_deps="gpl"
3179 vidstabdetect_filter_deps="libvidstab"
3180 vidstabtransform_filter_deps="libvidstab"
3181 zmq_filter_deps="libzmq"
3182 zoompan_filter_deps="swscale"
3183 zscale_filter_deps="libzimg"
3184 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3185
3186 # examples
3187 avio_dir_cmd_deps="avformat avutil"
3188 avio_reading_deps="avformat avcodec avutil"
3189 decode_audio_example_deps="avcodec avutil"
3190 decode_video_example_deps="avcodec avutil"
3191 demuxing_decoding_example_deps="avcodec avformat avutil"
3192 encode_audio_example_deps="avcodec avutil"
3193 encode_video_example_deps="avcodec avutil"
3194 extract_mvs_example_deps="avcodec avformat avutil"
3195 filter_audio_example_deps="avfilter avutil"
3196 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3197 filtering_video_example_deps="avfilter avcodec avformat avutil"
3198 http_multiclient_example_deps="avformat avutil fork"
3199 metadata_example_deps="avformat avutil"
3200 muxing_example_deps="avcodec avformat avutil swscale"
3201 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3202 remuxing_example_deps="avcodec avformat avutil"
3203 resampling_audio_example_deps="avutil swresample"
3204 scaling_video_example_deps="avutil swscale"
3205 transcode_aac_example_deps="avcodec avformat swresample"
3206 transcoding_example_deps="avfilter avcodec avformat avutil"
3207
3208 # libraries, in linking order
3209 avcodec_deps="avutil"
3210 avcodec_select="null_bsf"
3211 avdevice_deps="avformat avcodec avutil"
3212 avfilter_deps="avutil"
3213 avformat_deps="avcodec avutil"
3214 avresample_deps="avutil"
3215 postproc_deps="avutil gpl"
3216 swresample_deps="avutil"
3217 swscale_deps="avutil"
3218
3219 # programs
3220 ffmpeg_deps="avcodec avfilter avformat swresample"
3221 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3222                null_filter
3223                trim_filter"
3224 ffplay_deps="avcodec avformat swscale swresample sdl2"
3225 ffplay_extralibs='$sdl2_extralibs'
3226 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3227 ffprobe_deps="avcodec avformat"
3228 ffserver_deps="avformat fork sarestart"
3229 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3230
3231 # documentation
3232 podpages_deps="perl"
3233 manpages_deps="perl pod2man"
3234 htmlpages_deps="perl"
3235 htmlpages_deps_any="makeinfo_html texi2html"
3236 txtpages_deps="perl makeinfo"
3237 doc_deps_any="manpages htmlpages podpages txtpages"
3238
3239 # default parameters
3240
3241 logfile="ffbuild/config.log"
3242
3243 # installation paths
3244 prefix_default="/usr/local"
3245 bindir_default='${prefix}/bin'
3246 datadir_default='${prefix}/share/ffmpeg'
3247 docdir_default='${prefix}/share/doc/ffmpeg'
3248 incdir_default='${prefix}/include'
3249 libdir_default='${prefix}/lib'
3250 mandir_default='${prefix}/share/man'
3251
3252 # toolchain
3253 ar_default="ar"
3254 cc_default="gcc"
3255 cxx_default="g++"
3256 host_cc_default="gcc"
3257 doxygen_default="doxygen"
3258 install="install"
3259 ln_s_default="ln -s -f"
3260 nm_default="nm -g"
3261 objformat="elf"
3262 pkg_config_default=pkg-config
3263 ranlib_default="ranlib"
3264 strip_default="strip"
3265 version_script='--version-script'
3266 yasmexe_default="yasm"
3267 windres_default="windres"
3268 nvcc_default="nvcc"
3269 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3270
3271 # OS
3272 target_os_default=$(tolower $(uname -s))
3273 host_os=$target_os_default
3274
3275 # machine
3276 if test "$target_os_default" = aix; then
3277     arch_default=$(uname -p)
3278     strip_default="strip -X32_64"
3279 else
3280     arch_default=$(uname -m)
3281 fi
3282 cpu="generic"
3283 intrinsics="none"
3284
3285 # configurable options
3286 enable $PROGRAM_LIST
3287 enable $DOCUMENT_LIST
3288 enable $EXAMPLE_LIST
3289 enable $(filter_out avresample $LIBRARY_LIST)
3290 enable stripping
3291
3292 enable asm
3293 enable debug
3294 enable doc
3295 enable faan faandct faanidct
3296 enable optimizations
3297 enable runtime_cpudetect
3298 enable safe_bitstream_reader
3299 enable static
3300 enable swscale_alpha
3301 enable valgrind_backtrace
3302
3303 sws_max_filter_size_default=256
3304 set_default sws_max_filter_size
3305
3306 # build settings
3307 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3308 LIBPREF="lib"
3309 LIBSUF=".a"
3310 FULLNAME='$(NAME)$(BUILDSUF)'
3311 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3312 SLIBPREF="lib"
3313 SLIBSUF=".so"
3314 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3315 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3316 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3317 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3318 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3319 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3320 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3321
3322 asflags_filter=echo
3323 cflags_filter=echo
3324 ldflags_filter=echo
3325
3326 AS_C='-c'
3327 AS_O='-o $@'
3328 CC_C='-c'
3329 CC_E='-E -o $@'
3330 CC_O='-o $@'
3331 CXX_C='-c'
3332 CXX_O='-o $@'
3333 OBJCC_C='-c'
3334 OBJCC_E='-E -o $@'
3335 OBJCC_O='-o $@'
3336 LD_O='-o $@'
3337 LD_LIB='-l%'
3338 LD_PATH='-L'
3339 HOSTCC_C='-c'
3340 HOSTCC_E='-E -o $@'
3341 HOSTCC_O='-o $@'
3342 HOSTLD_O='-o $@'
3343 NVCC_C='-c'
3344 NVCC_O='-o $@'
3345
3346 host_extralibs='-lm'
3347 host_cflags_filter=echo
3348 host_ldflags_filter=echo
3349
3350 target_path='$(CURDIR)'
3351
3352 # since the object filename is not given with the -MM flag, the compiler
3353 # is only able to print the basename, and we must add the path ourselves
3354 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3355 DEPFLAGS='-MM'
3356
3357 # find source path
3358 if test -f configure; then
3359     source_path=.
3360 else
3361     source_path=$(cd $(dirname "$0"); pwd)
3362     case "$source_path" in
3363         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3364     esac
3365     test -e "$source_path/config.h" &&
3366         die "Out of tree builds are impossible with config.h in source dir."
3367 fi
3368
3369 for v in "$@"; do
3370     r=${v#*=}
3371     l=${v%"$r"}
3372     r=$(sh_quote "$r")
3373     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3374 done
3375
3376 find_things(){
3377     thing=$1
3378     pattern=$2
3379     file=$source_path/$3
3380     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3381 }
3382
3383 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3384 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3385 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3386 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3387 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3388 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3389 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3390 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3391 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3392
3393 find_things_extern(){
3394     thing=$1
3395     pattern=$2
3396     file=$source_path/$3
3397     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3398 }
3399
3400 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3401 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3402
3403 ALL_COMPONENTS="
3404     $BSF_LIST
3405     $DECODER_LIST
3406     $DEMUXER_LIST
3407     $ENCODER_LIST
3408     $FILTER_LIST
3409     $HWACCEL_LIST
3410     $INDEV_LIST
3411     $MUXER_LIST
3412     $OUTDEV_LIST
3413     $PARSER_LIST
3414     $PROTOCOL_LIST
3415 "
3416
3417 for n in $COMPONENT_LIST; do
3418     v=$(toupper ${n%s})_LIST
3419     eval enable \$$v
3420     eval ${n}_if_any="\$$v"
3421 done
3422
3423 enable $ARCH_EXT_LIST
3424
3425 die_unknown(){
3426     echo "Unknown option \"$1\"."
3427     echo "See $0 --help for available options."
3428     exit 1
3429 }
3430
3431 print_in_columns() {
3432     cols=$(expr $ncols / 24)
3433     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3434 }
3435
3436 show_list() {
3437     suffix=_$1
3438     shift
3439     echo $* | sed s/$suffix//g | print_in_columns
3440     exit 0
3441 }
3442
3443 rand_list(){
3444     IFS=', '
3445     set -- $*
3446     unset IFS
3447     for thing; do
3448         comp=${thing%:*}
3449         prob=${thing#$comp}
3450         prob=${prob#:}
3451         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3452         echo "prob ${prob:-0.5}"
3453         printf '%s\n' $comp
3454     done
3455 }
3456
3457 do_random(){
3458     action=$1
3459     shift
3460     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3461     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3462 }
3463
3464 for opt do
3465     optval="${opt#*=}"
3466     case "$opt" in
3467         --extra-ldflags=*)
3468             add_ldflags $optval
3469         ;;
3470         --extra-ldexeflags=*)
3471             add_ldexeflags $optval
3472         ;;
3473         --extra-ldlibflags=*)
3474             add_ldlibflags $optval
3475         ;;
3476         --extra-libs=*)
3477             add_extralibs $optval
3478         ;;
3479         --disable-devices)
3480             disable $INDEV_LIST $OUTDEV_LIST
3481         ;;
3482         --enable-debug=*)
3483             debuglevel="$optval"
3484         ;;
3485         --disable-programs)
3486             disable $PROGRAM_LIST
3487         ;;
3488         --disable-everything)
3489             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3490         ;;
3491         --disable-all)
3492             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3493             disable $LIBRARY_LIST $PROGRAM_LIST doc
3494             enable avutil
3495         ;;
3496         --enable-random|--disable-random)
3497             action=${opt%%-random}
3498             do_random ${action#--} $COMPONENT_LIST
3499         ;;
3500         --enable-random=*|--disable-random=*)
3501             action=${opt%%-random=*}
3502             do_random ${action#--} $optval
3503         ;;
3504         --enable-*=*|--disable-*=*)
3505             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3506             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3507             eval list=\$$(toupper $thing)_LIST
3508             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3509             list=$(filter "$name" $list)
3510             [ "$list" = "" ] && warn "Option $opt did not match anything"
3511             $action $list
3512         ;;
3513         --enable-?*|--disable-?*)
3514             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3515             if is_in $option $COMPONENT_LIST; then
3516                 test $action = disable && action=unset
3517                 eval $action \$$(toupper ${option%s})_LIST
3518             elif is_in $option $CMDLINE_SELECT; then
3519                 $action $option
3520             else
3521                 die_unknown $opt
3522             fi
3523         ;;
3524         --list-*)
3525             NAME="${opt#--list-}"
3526             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3527             NAME=${NAME%s}
3528             eval show_list $NAME \$$(toupper $NAME)_LIST
3529         ;;
3530         --help|-h) show_help
3531         ;;
3532         --quiet|-q) quiet=yes
3533         ;;
3534         --fatal-warnings) enable fatal_warnings
3535         ;;
3536         --libfuzzer=*)
3537             libfuzzer_path="$optval"
3538         ;;
3539         *)
3540             optname="${opt%%=*}"
3541             optname="${optname#--}"
3542             optname=$(echo "$optname" | sed 's/-/_/g')
3543             if is_in $optname $CMDLINE_SET; then
3544                 eval $optname='$optval'
3545             elif is_in $optname $CMDLINE_APPEND; then
3546                 append $optname "$optval"
3547             else
3548                 die_unknown $opt
3549             fi
3550         ;;
3551     esac
3552 done
3553
3554 for e in $env; do
3555     eval "export $e"
3556 done
3557
3558 # Mark specifically enabled, but normally autodetected libraries as requested.
3559 for lib in $AUTODETECT_LIBS; do
3560     enabled $lib && request $lib
3561 done
3562
3563 # Enable platform codecs by default.
3564 enable_weak audiotoolbox
3565
3566 # Enable hwaccels by default.
3567 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3568 enable_weak xlib
3569
3570 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3571
3572 disabled logging && logfile=/dev/null
3573
3574 die_license_disabled() {
3575     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3576 }
3577
3578 die_license_disabled_gpl() {
3579     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3580 }
3581
3582 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3583 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3584
3585 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3586 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3587
3588 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3589
3590 # Disable all the library-specific components if the library itself
3591 # is disabled, see AVCODEC_LIST and following _LIST variables.
3592
3593 disable_components(){
3594     disabled ${1} && disable $(
3595         eval components="\$$(toupper ${1})_COMPONENTS"
3596         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3597     )
3598 }
3599
3600 map 'disable_components $v' $LIBRARY_LIST
3601
3602 mkdir -p ffbuild
3603 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3604 set >> $logfile
3605
3606 test -n "$valgrind" && toolchain="valgrind-memcheck"
3607
3608 enabled ossfuzz && {
3609     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3610     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3611 }
3612
3613 case "$toolchain" in
3614     *-asan)
3615         cc_default="${toolchain%-asan}"
3616         add_cflags  -fsanitize=address
3617         add_ldflags -fsanitize=address
3618     ;;
3619     *-msan)
3620         cc_default="${toolchain%-msan}"
3621         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3622         add_ldflags -fsanitize=memory
3623     ;;
3624     *-tsan)
3625         cc_default="${toolchain%-tsan}"
3626         add_cflags  -fsanitize=thread -fPIE
3627         add_ldflags -fsanitize=thread -pie
3628         case "$toolchain" in
3629             gcc-tsan)
3630                 add_cflags  -fPIC
3631                 add_ldflags -fPIC
3632                 ;;
3633         esac
3634     ;;
3635     *-usan)
3636         cc_default="${toolchain%-usan}"
3637         add_cflags  -fsanitize=undefined
3638         add_ldflags -fsanitize=undefined
3639     ;;
3640     valgrind-*)
3641         target_exec_default="valgrind"
3642         case "$toolchain" in
3643             valgrind-massif)
3644                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3645                 ;;
3646             valgrind-memcheck)
3647                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3648                 ;;
3649         esac
3650     ;;
3651     msvc)
3652         # Check whether the current MSVC version needs the C99 converter.
3653         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3654         # support enough of C99 to build ffmpeg. Default to the new
3655         # behaviour if the regexp was unable to match anything, since this
3656         # successfully parses the version number of existing supported
3657         # versions that require the converter (MSVC 2010 and 2012).
3658         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3659         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3660             cc_default="cl"
3661             cxx_default="cl"
3662         else
3663             cc_default="c99wrap cl"
3664             cxx_default="c99wrap cl"
3665         fi
3666         ld_default="$source_path/compat/windows/mslink"
3667         nm_default="dumpbin -symbols"
3668         ar_default="lib"
3669         case "$arch" in
3670         arm*)
3671             as_default="armasm"
3672             ;;
3673         esac
3674         target_os_default="win32"
3675         # Use a relative path for TMPDIR. This makes sure all the
3676         # ffconf temp files are written with a relative path, avoiding
3677         # issues with msys/win32 path conversion for MSVC parameters
3678         # such as -Fo<file> or -out:<file>.
3679         TMPDIR=.
3680     ;;
3681     icl)
3682         cc_default="icl"
3683         ld_default="xilink"
3684         nm_default="dumpbin -symbols"
3685         ar_default="xilib"
3686         target_os_default="win32"
3687         TMPDIR=.
3688     ;;
3689     gcov)
3690         add_cflags  -fprofile-arcs -ftest-coverage
3691         add_ldflags -fprofile-arcs -ftest-coverage
3692     ;;
3693     llvm-cov)
3694         add_cflags -fprofile-arcs -ftest-coverage
3695         add_ldflags --coverage
3696     ;;
3697     hardened)
3698         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3699         add_cflags   -fno-strict-overflow -fstack-protector-all
3700         add_ldflags  -Wl,-z,relro -Wl,-z,now
3701         add_cflags   -fPIE
3702         add_ldexeflags -fPIE -pie
3703     ;;
3704     ?*)
3705         die "Unknown toolchain $toolchain"
3706     ;;
3707 esac
3708
3709 test -n "$cross_prefix" && enable cross_compile
3710
3711 if enabled cross_compile; then
3712     test -n "$arch" && test -n "$target_os" ||
3713         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3714 fi
3715
3716 ar_default="${cross_prefix}${ar_default}"
3717 cc_default="${cross_prefix}${cc_default}"
3718 cxx_default="${cross_prefix}${cxx_default}"
3719 nm_default="${cross_prefix}${nm_default}"
3720 pkg_config_default="${cross_prefix}${pkg_config_default}"
3721 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3722     ranlib_default="${cross_prefix}${ranlib_default} -D"
3723 else
3724     ranlib_default="${cross_prefix}${ranlib_default}"
3725 fi
3726 strip_default="${cross_prefix}${strip_default}"
3727 windres_default="${cross_prefix}${windres_default}"
3728
3729 sysinclude_default="${sysroot}/usr/include"
3730
3731 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3732     target_exec target_os yasmexe nvcc
3733 enabled cross_compile || host_cc_default=$cc
3734 set_default host_cc
3735
3736 pkg_config_fail_message=""
3737 if ! $pkg_config --version >/dev/null 2>&1; then
3738     warn "$pkg_config not found, library detection may fail."
3739     pkg_config=false
3740 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3741     pkg_config_fail_message="
3742 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3743 fi
3744
3745 if test $doxygen != $doxygen_default && \
3746   ! $doxygen --version >/dev/null 2>&1; then
3747     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3748 fi
3749
3750 exesuf() {
3751     case $1 in
3752         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3753     esac
3754 }
3755
3756 EXESUF=$(exesuf $target_os)
3757 HOSTEXESUF=$(exesuf $host_os)
3758
3759 # set temporary file name
3760 : ${TMPDIR:=$TEMPDIR}
3761 : ${TMPDIR:=$TMP}
3762 : ${TMPDIR:=/tmp}
3763
3764 if [ -n "$tempprefix" ] ; then
3765     mktemp(){
3766         echo $tempprefix.${HOSTNAME}.${UID}
3767     }
3768 elif ! check_cmd mktemp -u XXXXXX; then
3769     # simple replacement for missing mktemp
3770     # NOT SAFE FOR GENERAL USE
3771     mktemp(){
3772         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3773     }
3774 fi
3775
3776 tmpfile(){
3777     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3778         (set -C; exec > $tmp) 2>/dev/null ||
3779         die "Unable to create temporary file in $TMPDIR."
3780     append TMPFILES $tmp
3781     eval $1=$tmp
3782 }
3783
3784 trap 'rm -f -- $TMPFILES' EXIT
3785
3786 tmpfile TMPASM .asm
3787 tmpfile TMPC   .c
3788 tmpfile TMPCPP .cpp
3789 tmpfile TMPE   $EXESUF
3790 tmpfile TMPH   .h
3791 tmpfile TMPM   .m
3792 tmpfile TMPO   .o
3793 tmpfile TMPS   .S
3794 tmpfile TMPSH  .sh
3795 tmpfile TMPV   .ver
3796
3797 unset -f mktemp
3798
3799 chmod +x $TMPE
3800
3801 # make sure we can execute files in $TMPDIR
3802 cat > $TMPSH 2>> $logfile <<EOF
3803 #! /bin/sh
3804 EOF
3805 chmod +x $TMPSH >> $logfile 2>&1
3806 if ! $TMPSH >> $logfile 2>&1; then
3807     cat <<EOF
3808 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3809 variable to another directory and make sure that it is not mounted noexec.
3810 EOF
3811     die "Sanity test failed."
3812 fi
3813
3814 armasm_flags(){
3815     for flag; do
3816         case $flag in
3817             # Filter out MSVC cl.exe options from cflags that shouldn't
3818             # be passed to gas-preprocessor
3819             -M[TD]*)                                            ;;
3820             *)                  echo $flag                      ;;
3821         esac
3822    done
3823 }
3824
3825 ccc_flags(){
3826     for flag; do
3827         case $flag in
3828             -std=c99)           echo -c99                       ;;
3829             -mcpu=*)            echo -arch ${flag#*=}           ;;
3830             -mieee)             echo -ieee                      ;;
3831             -O*|-fast)          echo $flag                      ;;
3832             -fno-math-errno)    echo -assume nomath_errno       ;;
3833             -g)                 echo -g3                        ;;
3834             -Wall)              echo -msg_enable level2         ;;
3835             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3836             -Wl,*)              echo $flag                      ;;
3837             -f*|-W*)                                            ;;
3838             *)                  echo $flag                      ;;
3839         esac
3840    done
3841 }
3842
3843 cparser_flags(){
3844     for flag; do
3845         case $flag in
3846             -Wno-switch)             echo -Wno-switch-enum ;;
3847             -Wno-format-zero-length) ;;
3848             -Wdisabled-optimization) ;;
3849             -Wno-pointer-sign)       echo -Wno-other ;;
3850             *)                       echo $flag ;;
3851         esac
3852     done
3853 }
3854
3855 msvc_common_flags(){
3856     for flag; do
3857         case $flag in
3858             # In addition to specifying certain flags under the compiler
3859             # specific filters, they must be specified here as well or else the
3860             # generic catch all at the bottom will print the original flag.
3861             -Wall)                ;;
3862             -std=c99)             ;;
3863             # Common flags
3864             -fomit-frame-pointer) ;;
3865             -g)                   echo -Z7 ;;
3866             -fno-math-errno)      ;;
3867             -fno-common)          ;;
3868             -fno-signed-zeros)    ;;
3869             -fPIC)                ;;
3870             -mthumb)              ;;
3871             -march=*)             ;;
3872             -lz)                  echo zlib.lib ;;
3873             -lx264)               echo libx264.lib ;;
3874             -lstdc++)             ;;
3875             -l*)                  echo ${flag#-l}.lib ;;
3876             -LARGEADDRESSAWARE)   echo $flag ;;
3877             -L*)                  echo -libpath:${flag#-L} ;;
3878             *)                    echo $flag ;;
3879         esac
3880     done
3881 }
3882
3883 msvc_flags(){
3884     msvc_common_flags "$@"
3885     for flag; do
3886         case $flag in
3887             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3888                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3889                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3890                                        -wd4307 \
3891                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3892         esac
3893     done
3894 }
3895
3896 icl_flags(){
3897     msvc_common_flags "$@"
3898     for flag; do
3899         case $flag in
3900             # Despite what Intel's documentation says -Wall, which is supported
3901             # on Windows, does enable remarks so disable them here.
3902             -Wall)                echo $flag -Qdiag-disable:remark ;;
3903             -std=c99)             echo -Qstd=c99 ;;
3904             -flto)                echo -ipo ;;
3905         esac
3906     done
3907 }
3908
3909 icc_flags(){
3910     for flag; do
3911         case $flag in
3912             -flto)                echo -ipo ;;
3913             *)                    echo $flag ;;
3914         esac
3915     done
3916 }
3917
3918 pgi_flags(){
3919     for flag; do
3920         case $flag in
3921             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3922             -fomit-frame-pointer) echo -Mnoframe ;;
3923             -g)                   echo -gopt ;;
3924             *)                    echo $flag ;;
3925         esac
3926     done
3927 }
3928
3929 suncc_flags(){
3930     for flag; do
3931         case $flag in
3932             -march=*|-mcpu=*)
3933                 case "${flag#*=}" in
3934                     native)                   echo -xtarget=native       ;;
3935                     v9|niagara)               echo -xarch=sparc          ;;
3936                     ultrasparc)               echo -xarch=sparcvis       ;;
3937                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3938                     i586|pentium)             echo -xchip=pentium        ;;
3939                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3940                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3941                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3942                     pentium4*)          echo -xtarget=pentium4           ;;
3943                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3944                     *-sse3)             echo -xarch=sse3                 ;;
3945                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3946                     bonnell)                   echo -xarch=ssse3         ;;
3947                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3948                     westmere)                  echo -xtarget=westmere    ;;
3949                     silvermont)                echo -xarch=sse4_2        ;;
3950                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3951                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3952                                                echo -xarch=avx           ;;
3953                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3954                     btver1)                    echo -xarch=amdsse4a      ;;
3955                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3956                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3957                     k8|opteron|athlon64|athlon-fx)
3958                                                echo -xarch=sse2a         ;;
3959                     athlon*)                   echo -xarch=pentium_proa  ;;
3960                 esac
3961                 ;;
3962             -std=c99)             echo -xc99              ;;
3963             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3964             -fPIC)                echo -KPIC -xcode=pic32 ;;
3965             -W*,*)                echo $flag              ;;
3966             -f*-*|-W*|-mimpure-text)                      ;;
3967             -shared)              echo -G                 ;;
3968             *)                    echo $flag              ;;
3969         esac
3970     done
3971 }
3972
3973 tms470_flags(){
3974     for flag; do
3975         case $flag in
3976             -march=*|-mcpu=*)
3977                 case "${flag#*=}" in
3978                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3979                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3980                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3981                     armv6*|arm11*)          echo -mv=6   ;;
3982                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3983                                             echo -mv=5e  ;;
3984                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3985                 esac
3986                 ;;
3987             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3988             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3989             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3990             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3991             -msoft-float)   echo --float_support=vfplib       ;;
3992             -O[0-3]|-mf=*)  echo $flag                        ;;
3993             -g)             echo -g -mn                       ;;
3994             -pds=*)         echo $flag                        ;;
3995             -D*|-I*)        echo $flag                        ;;
3996             --gcc|--abi=*)  echo $flag                        ;;
3997             -me)            echo $flag                        ;;
3998         esac
3999     done
4000 }
4001
4002 probe_cc(){
4003     pfx=$1
4004     _cc=$2
4005     first=$3
4006
4007     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4008     unset _ld_o _ldflags _ld_lib _ld_path
4009     unset _depflags _DEPCMD _DEPFLAGS
4010     _flags_filter=echo
4011
4012     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4013         true # no-op to avoid reading stdin in following checks
4014     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4015         _type=llvm_gcc
4016         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4017         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4018         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4019         _cflags_speed='-O3'
4020         _cflags_size='-Os'
4021     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4022         _type=gcc
4023         gcc_version=$($_cc --version | head -n1)
4024         gcc_basever=$($_cc -dumpversion)
4025         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4026         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4027         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4028         case $gcc_basever in
4029             2) ;;
4030             2.*) ;;
4031             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4032         esac
4033         if [ "$first" = true ]; then
4034             case $gcc_basever in
4035                 4.2*)
4036                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4037             esac
4038         fi
4039         _cflags_speed='-O3'
4040         _cflags_size='-Os'
4041     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4042         _type=icc
4043         _ident=$($_cc --version | head -n1)
4044         _depflags='-MMD'
4045         _cflags_speed='-O3'
4046         _cflags_size='-Os'
4047         _cflags_noopt='-O1'
4048         _flags_filter=icc_flags
4049     elif $_cc -v 2>&1 | grep -q xlc; then
4050         _type=xlc
4051         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4052         _cflags_speed='-O5'
4053         _cflags_size='-O5 -qcompact'
4054     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4055         _type=ccc
4056         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4057         _DEPFLAGS='-M'
4058         _cflags_speed='-fast'
4059         _cflags_size='-O1'
4060         _flags_filter=ccc_flags
4061     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4062         test -d "$sysroot" || die "No valid sysroot specified."
4063         _type=armcc
4064         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4065         armcc_conf="$PWD/armcc.conf"
4066         $_cc --arm_linux_configure                 \
4067              --arm_linux_config_file="$armcc_conf" \
4068              --configure_sysroot="$sysroot"        \
4069              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4070              die "Error creating armcc configuration file."
4071         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4072         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4073         as_default="${cross_prefix}gcc"
4074         _depflags='-MMD'
4075         _cflags_speed='-O3'
4076         _cflags_size='-Os'
4077     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4078         _type=tms470
4079         _ident=$($_cc -version | head -n1 | tr -s ' ')
4080         _flags='--gcc --abi=eabi -me'
4081         _cc_e='-ppl -fe=$@'
4082         _cc_o='-fe=$@'
4083         _depflags='-ppa -ppd=$(@:.o=.d)'
4084         _cflags_speed='-O3 -mf=5'
4085         _cflags_size='-O3 -mf=2'
4086         _flags_filter=tms470_flags
4087     elif $_cc -v 2>&1 | grep -q clang; then
4088         _type=clang
4089         _ident=$($_cc --version 2>/dev/null | head -n1)
4090         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4091         _cflags_speed='-O3'
4092         _cflags_size='-Oz'
4093     elif $_cc -V 2>&1 | grep -q Sun; then
4094         _type=suncc
4095         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4096         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4097         _DEPFLAGS='-xM1 -xc99'
4098         _ldflags='-std=c99'
4099         _cflags_speed='-O5'
4100         _cflags_size='-O5 -xspace'
4101         _flags_filter=suncc_flags
4102     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4103         _type=pathscale
4104         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4105         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4106         _cflags_speed='-O2'
4107         _cflags_size='-Os'
4108         _flags_filter='filter_out -Wdisabled-optimization'
4109     elif $_cc -v 2>&1 | grep -q Open64; then
4110         _type=open64
4111         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4112         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4113         _cflags_speed='-O2'
4114         _cflags_size='-Os'
4115         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4116     elif $_cc -V 2>&1 | grep -q Portland; then
4117         _type=pgi
4118         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4119         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4120         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4121         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4122         _cflags_noopt="-O"
4123         _flags_filter=pgi_flags
4124     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4125         _type=armasm
4126         _ident=$($_cc | head -n1)
4127         # 4509: "This form of conditional instruction is deprecated"
4128         _flags="-nologo -ignore 4509"
4129         _flags_filter=armasm_flags
4130     elif $_cc 2>&1 | grep -q Intel; then
4131         _type=icl
4132         _ident=$($_cc 2>&1 | head -n1)
4133         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4134         # Not only is O3 broken on 13.x+ but it is slower on all previous
4135         # versions (tested) as well.
4136         _cflags_speed="-O2"
4137         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4138         if $_cc 2>&1 | grep -q Linker; then
4139             _ld_o='-out:$@'
4140         else
4141             _ld_o='-Fe$@'
4142         fi
4143         _cc_o='-Fo$@'
4144         _cc_e='-P'
4145         _flags_filter=icl_flags
4146         _ld_lib='lib%.a'
4147         _ld_path='-libpath:'
4148         # -Qdiag-error to make icl error when seeing certain unknown arguments
4149         _flags='-nologo -Qdiag-error:4044,10157'
4150         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4151         # with MSVC which enables it by default.
4152         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4153         disable stripping
4154     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4155         # lld can emulate multiple different linkers; in ms link.exe mode,
4156         # the -? parameter gives the help output which contains an identifyable
4157         # string, while it gives an error in other modes.
4158         _type=lld-link
4159         # The link.exe mode doesn't have a switch for getting the version,
4160         # but we can force it back to gnu mode and get the version from there.
4161         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4162         _ld_o='-out:$@'
4163         _flags_filter=msvc_flags
4164         _ld_lib='lib%.a'
4165         _ld_path='-libpath:'
4166     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4167         _type=msvc
4168         _ident=$($_cc 2>&1 | head -n1)
4169         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4170         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4171         _cflags_speed="-O2"
4172         _cflags_size="-O1"
4173         _cflags_noopt="-O1"
4174         if $_cc -nologo- 2>&1 | grep -q Linker; then
4175             _ld_o='-out:$@'
4176         else
4177             _ld_o='-Fe$@'
4178         fi
4179         _cc_o='-Fo$@'
4180         _cc_e='-P -Fi$@'
4181         _flags_filter=msvc_flags
4182         _ld_lib='lib%.a'
4183         _ld_path='-libpath:'
4184         _flags='-nologo'
4185         disable stripping
4186     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4187         _type=cparser
4188         _ident=$($_cc --version | head -n1)
4189         _depflags='-MMD'
4190         _cflags_speed='-O4'
4191         _cflags_size='-O2'
4192         _flags_filter=cparser_flags
4193     fi
4194
4195     eval ${pfx}_type=\$_type
4196     eval ${pfx}_ident=\$_ident
4197 }
4198
4199 set_ccvars(){
4200     eval ${1}_C=\${_cc_c-\${${1}_C}}
4201     eval ${1}_E=\${_cc_e-\${${1}_E}}
4202     eval ${1}_O=\${_cc_o-\${${1}_O}}
4203
4204     if [ -n "$_depflags" ]; then
4205         eval ${1}_DEPFLAGS=\$_depflags
4206     else
4207         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4208         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4209         eval DEP${1}FLAGS=\$_flags
4210     fi
4211 }
4212
4213 probe_cc cc "$cc" "true"
4214 cflags_filter=$_flags_filter
4215 cflags_speed=$_cflags_speed
4216 cflags_size=$_cflags_size
4217 cflags_noopt=$_cflags_noopt
4218 add_cflags $_flags $_cflags
4219 cc_ldflags=$_ldflags
4220 set_ccvars CC
4221 set_ccvars CXX
4222
4223 probe_cc hostcc "$host_cc"
4224 host_cflags_filter=$_flags_filter
4225 add_host_cflags  $_flags $_cflags
4226 set_ccvars HOSTCC
4227
4228 test -n "$cc_type" && enable $cc_type ||
4229     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4230
4231 : ${as_default:=$cc}
4232 : ${objcc_default:=$cc}
4233 : ${dep_cc_default:=$cc}
4234 : ${ld_default:=$cc}
4235 : ${host_ld_default:=$host_cc}
4236 set_default ar as objcc dep_cc ld ln_s host_ld windres
4237
4238 probe_cc as "$as"
4239 asflags_filter=$_flags_filter
4240 add_asflags $_flags $_cflags
4241 set_ccvars AS
4242
4243 probe_cc objcc "$objcc"
4244 objcflags_filter=$_flags_filter
4245 add_objcflags $_flags $_cflags
4246 set_ccvars OBJC
4247
4248 probe_cc ld "$ld"
4249 ldflags_filter=$_flags_filter
4250 add_ldflags $_flags $_ldflags
4251 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4252 LD_O=${_ld_o-$LD_O}
4253 LD_LIB=${_ld_lib-$LD_LIB}
4254 LD_PATH=${_ld_path-$LD_PATH}
4255
4256 probe_cc hostld "$host_ld"
4257 host_ldflags_filter=$_flags_filter
4258 add_host_ldflags $_flags $_ldflags
4259 HOSTLD_O=${_ld_o-$HOSTLD_O}
4260
4261 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4262     probe_cc depcc "$dep_cc"
4263     CCDEP=${_DEPCMD:-$DEPCMD}
4264     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4265     DEPCCFLAGS=$_flags
4266 fi
4267
4268 if $ar 2>&1 | grep -q Microsoft; then
4269     arflags="-nologo"
4270     ar_o='-out:$@'
4271 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4272     arflags="rq"
4273     ar_o='$@'
4274 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4275     arflags='-Xany -r -c'
4276     ar_o='$@'
4277 elif $ar 2>&1 | grep -q "\[D\] "; then
4278     arflags="rcD"
4279     ar_o='$@'
4280 else
4281     arflags="rc"
4282     ar_o='$@'
4283 fi
4284
4285 add_cflags $extra_cflags
4286 add_cxxflags $extra_cxxflags
4287 add_objcflags $extra_objcflags
4288 add_asflags $extra_cflags
4289
4290 if test -n "$sysroot"; then
4291     case "$cc_type" in
4292         gcc|llvm_gcc|clang)
4293             add_cppflags --sysroot="$sysroot"
4294             add_ldflags --sysroot="$sysroot"
4295 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4296             add_cppflags -isysroot "$sysroot"
4297             add_ldflags -isysroot "$sysroot"
4298         ;;
4299         tms470)
4300             add_cppflags -I"$sysinclude"
4301             add_ldflags  --sysroot="$sysroot"
4302         ;;
4303     esac
4304 fi
4305
4306 if test "$cpu" = host; then
4307     enabled cross_compile &&
4308         die "--cpu=host makes no sense when cross-compiling."
4309
4310     case "$cc_type" in
4311         gcc|llvm_gcc)
4312             check_native(){
4313                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4314                 sed -n "/cc1.*$1=/{
4315                             s/.*$1=\\([^ ]*\\).*/\\1/
4316                             p
4317                             q
4318                         }" $TMPE
4319             }
4320             cpu=$(check_native -march || check_native -mcpu)
4321         ;;
4322         clang)
4323             check_native(){
4324                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4325                 sed -n "/cc1.*-target-cpu /{
4326                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4327                             p
4328                             q
4329                         }" $TMPE
4330             }
4331             cpu=$(check_native -march)
4332         ;;
4333     esac
4334
4335     test "${cpu:-host}" = host &&
4336         die "--cpu=host not supported with compiler $cc"
4337 fi
4338
4339 # Deal with common $arch aliases
4340 case "$arch" in
4341     aarch64|arm64)
4342         arch="aarch64"
4343     ;;
4344     arm*|iPad*|iPhone*)
4345         arch="arm"
4346     ;;
4347     mips*|IP*)
4348         case "$arch" in
4349         *el)
4350             add_cppflags -EL
4351             add_ldflags -EL
4352         ;;
4353         *eb)
4354             add_cppflags -EB
4355             add_ldflags -EB
4356         ;;
4357         esac
4358         arch="mips"
4359     ;;
4360     parisc*|hppa*)
4361         arch="parisc"
4362     ;;
4363     "Power Macintosh"|ppc*|powerpc*)
4364         arch="ppc"
4365     ;;
4366     s390|s390x)
4367         arch="s390"
4368     ;;
4369     sh4|sh)
4370         arch="sh4"
4371     ;;
4372     sun4*|sparc*)
4373         arch="sparc"
4374     ;;
4375     tilegx|tile-gx)
4376         arch="tilegx"
4377     ;;
4378     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4379         arch="x86"
4380     ;;
4381 esac
4382
4383 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4384 enable $arch
4385
4386 # Add processor-specific flags
4387 if enabled aarch64; then
4388
4389     case $cpu in
4390         armv*)
4391             cpuflags="-march=$cpu"
4392         ;;
4393         *)
4394             cpuflags="-mcpu=$cpu"
4395         ;;
4396     esac
4397
4398 elif enabled alpha; then
4399
4400     cpuflags="-mcpu=$cpu"
4401
4402 elif enabled arm; then
4403
4404     check_arm_arch() {
4405         check_cpp_condition stddef.h \
4406             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4407             $cpuflags
4408     }
4409
4410     probe_arm_arch() {
4411         if   check_arm_arch 4;        then echo armv4
4412         elif check_arm_arch 4T;       then echo armv4t
4413         elif check_arm_arch 5;        then echo armv5
4414         elif check_arm_arch 5E;       then echo armv5e
4415         elif check_arm_arch 5T;       then echo armv5t
4416         elif check_arm_arch 5TE;      then echo armv5te
4417         elif check_arm_arch 5TEJ;     then echo armv5te
4418         elif check_arm_arch 6;        then echo armv6
4419         elif check_arm_arch 6J;       then echo armv6j
4420         elif check_arm_arch 6K;       then echo armv6k
4421         elif check_arm_arch 6Z;       then echo armv6z
4422         elif check_arm_arch 6ZK;      then echo armv6zk
4423         elif check_arm_arch 6T2;      then echo armv6t2
4424         elif check_arm_arch 7;        then echo armv7
4425         elif check_arm_arch 7A  7_A;  then echo armv7-a
4426         elif check_arm_arch 7S;       then echo armv7-a
4427         elif check_arm_arch 7R  7_R;  then echo armv7-r
4428         elif check_arm_arch 7M  7_M;  then echo armv7-m
4429         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4430         elif check_arm_arch 8A  8_A;  then echo armv8-a
4431         fi
4432     }
4433
4434     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4435
4436     case $cpu in
4437         armv*)
4438             cpuflags="-march=$cpu"
4439             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4440         ;;
4441         *)
4442             cpuflags="-mcpu=$cpu"
4443             case $cpu in
4444                 cortex-a*)                               subarch=armv7a  ;;
4445                 cortex-r*)                               subarch=armv7r  ;;
4446                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4447                 arm11*)                                  subarch=armv6   ;;
4448                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4449                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4450                 *)                             subarch=$(probe_arm_arch) ;;
4451             esac
4452         ;;
4453     esac
4454
4455     case "$subarch" in
4456         armv5t*)    enable fast_clz                ;;
4457         armv[6-8]*)
4458             enable fast_clz
4459             disabled fast_unaligned || enable fast_unaligned
4460             ;;
4461     esac
4462
4463 elif enabled avr32; then
4464
4465     case $cpu in
4466         ap7[02]0[0-2])
4467             subarch="avr32_ap"
4468             cpuflags="-mpart=$cpu"
4469         ;;
4470         ap)
4471             subarch="avr32_ap"
4472             cpuflags="-march=$cpu"
4473         ;;
4474         uc3[ab]*)
4475             subarch="avr32_uc"
4476             cpuflags="-mcpu=$cpu"
4477         ;;
4478         uc)
4479             subarch="avr32_uc"
4480             cpuflags="-march=$cpu"
4481         ;;
4482     esac
4483
4484 elif enabled bfin; then
4485
4486     cpuflags="-mcpu=$cpu"
4487
4488 elif enabled mips; then
4489
4490     cpuflags="-march=$cpu"
4491
4492     if [ "$cpu" != "generic" ]; then
4493         disable mips32r2
4494         disable mips32r5
4495         disable mips64r2
4496         disable mips32r6
4497         disable mips64r6
4498         disable loongson2
4499         disable loongson3
4500
4501         case $cpu in
4502             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4503                 enable mips32r2
4504                 disable msa
4505             ;;
4506             p5600|i6400|p6600)
4507                 disable mipsdsp
4508                 disable mipsdspr2
4509             ;;
4510             loongson*)
4511                 enable loongson2
4512                 enable loongson3
4513                 enable local_aligned_8 local_aligned_16 local_aligned_32
4514                 enable simd_align_16
4515                 enable fast_64bit
4516                 enable fast_clz
4517                 enable fast_cmov
4518                 enable fast_unaligned
4519                 disable aligned_stack
4520                 disable mipsfpu
4521                 disable mipsdsp
4522                 disable mipsdspr2
4523                 case $cpu in
4524                     loongson3*)
4525                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4526                     ;;
4527                     loongson2e)
4528                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4529                     ;;
4530                     loongson2f)
4531                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4532                     ;;
4533                 esac
4534             ;;
4535             *)
4536                 # Unknown CPU. Disable everything.
4537                 warn "unknown CPU. Disabling all MIPS optimizations."
4538                 disable mipsfpu
4539                 disable mipsdsp
4540                 disable mipsdspr2
4541                 disable msa
4542                 disable mmi
4543             ;;
4544         esac
4545
4546         case $cpu in
4547             24kc)
4548                 disable mipsfpu
4549                 disable mipsdsp
4550                 disable mipsdspr2
4551             ;;
4552             24kf*)
4553                 disable mipsdsp
4554                 disable mipsdspr2
4555             ;;
4556             24kec|34kc|1004kc)
4557                 disable mipsfpu
4558                 disable mipsdspr2
4559             ;;
4560             24kef*|34kf*|1004kf*)
4561                 disable mipsdspr2
4562             ;;
4563             74kc)
4564                 disable mipsfpu
4565             ;;
4566             p5600)
4567                 enable mips32r5
4568                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4569             ;;
4570             i6400)
4571                 enable mips64r6
4572                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4573             ;;
4574             p6600)
4575                 enable mips64r6
4576                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4577             ;;
4578         esac
4579     else
4580         # We do not disable anything. Is up to the user to disable the unwanted features.
4581         warn 'generic cpu selected'
4582     fi
4583
4584 elif enabled ppc; then
4585
4586     disable ldbrx
4587
4588     case $(tolower $cpu) in
4589         601|ppc601|powerpc601)
4590             cpuflags="-mcpu=601"
4591             disable altivec
4592         ;;
4593         603*|ppc603*|powerpc603*)
4594             cpuflags="-mcpu=603"
4595             disable altivec
4596         ;;
4597         604*|ppc604*|powerpc604*)
4598             cpuflags="-mcpu=604"
4599             disable altivec
4600         ;;
4601         g3|75*|ppc75*|powerpc75*)
4602             cpuflags="-mcpu=750"
4603             disable altivec
4604         ;;
4605         g4|745*|ppc745*|powerpc745*)
4606             cpuflags="-mcpu=7450"
4607             disable vsx
4608         ;;
4609         74*|ppc74*|powerpc74*)
4610             cpuflags="-mcpu=7400"
4611             disable vsx
4612         ;;
4613         g5|970|ppc970|powerpc970)
4614             cpuflags="-mcpu=970"
4615             disable vsx
4616         ;;
4617         power[3-6]*)
4618             cpuflags="-mcpu=$cpu"
4619             disable vsx
4620         ;;
4621         power[7-8]*)
4622             cpuflags="-mcpu=$cpu"
4623         ;;
4624         cell)
4625             cpuflags="-mcpu=cell"
4626             enable ldbrx
4627             disable vsx
4628         ;;
4629         e500mc)
4630             cpuflags="-mcpu=e500mc"
4631             disable altivec
4632         ;;
4633         e500v2)
4634             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4635             disable altivec
4636             disable dcbzl
4637         ;;
4638         e500)
4639             cpuflags="-mcpu=8540 -mhard-float"
4640             disable altivec
4641             disable dcbzl
4642         ;;
4643     esac
4644
4645 elif enabled sparc; then
4646
4647     case $cpu in
4648         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4649             cpuflags="-mcpu=$cpu"
4650         ;;
4651         ultrasparc*|niagara[234])
4652             cpuflags="-mcpu=$cpu"
4653         ;;
4654     esac
4655
4656 elif enabled x86; then
4657
4658     case $cpu in
4659         i[345]86|pentium)
4660             cpuflags="-march=$cpu"
4661             disable i686
4662             disable mmx
4663         ;;
4664         # targets that do NOT support nopl and conditional mov (cmov)
4665         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4666             cpuflags="-march=$cpu"
4667             disable i686
4668         ;;
4669         # targets that do support nopl and conditional mov (cmov)
4670         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4671         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4672         |amdfam10|barcelona|b[dt]ver*|znver*)
4673             cpuflags="-march=$cpu"
4674             enable i686
4675             enable fast_cmov
4676         ;;
4677         # targets that do support conditional mov but on which it's slow
4678         pentium4|pentium4m|prescott|nocona)
4679             cpuflags="-march=$cpu"
4680             enable i686
4681             disable fast_cmov
4682         ;;
4683     esac
4684
4685 fi
4686
4687 if [ "$cpu" != generic ]; then
4688     add_cflags  $cpuflags
4689     add_asflags $cpuflags
4690     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4691 fi
4692
4693 # compiler sanity check
4694 check_exec <<EOF
4695 int main(void){ return 0; }
4696 EOF
4697 if test "$?" != 0; then
4698     echo "$cc is unable to create an executable file."
4699     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4700         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4701         echo "Only do this if you know what cross compiling means."
4702     fi
4703     die "C compiler test failed."
4704 fi
4705
4706 add_cppflags -D_ISOC99_SOURCE
4707 add_cxxflags -D__STDC_CONSTANT_MACROS
4708 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4709
4710 # some compilers silently accept -std=c11, so we also need to check that the
4711 # version macro is defined properly
4712 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4713     add_cflags -std=c11
4714 else
4715     check_cflags -std=c99
4716 fi
4717
4718 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4719 #include <stdlib.h>
4720 EOF
4721 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4722 #include <stdlib.h>
4723 EOF
4724
4725 add_host_cppflags -D_ISOC99_SOURCE
4726 check_host_cflags -std=c99
4727 check_host_cflags -Wall
4728 check_host_cflags -O3
4729
4730 check_64bit(){
4731     arch32=$1
4732     arch64=$2
4733     expr=$3
4734     check_code cc "" "int test[2*($expr) - 1]" &&
4735         subarch=$arch64 || subarch=$arch32
4736 }
4737
4738 case "$arch" in
4739     aarch64|alpha|ia64)
4740         spic=$shared
4741     ;;
4742     mips)
4743         check_64bit mips mips64 '_MIPS_SIM > 1'
4744         spic=$shared
4745     ;;
4746     parisc)
4747         check_64bit parisc parisc64 'sizeof(void *) > 4'
4748         spic=$shared
4749     ;;
4750     ppc)
4751         check_64bit ppc ppc64 'sizeof(void *) > 4'
4752         spic=$shared
4753     ;;
4754     s390)
4755         check_64bit s390 s390x 'sizeof(void *) > 4'
4756         spic=$shared
4757     ;;
4758     sparc)
4759         check_64bit sparc sparc64 'sizeof(void *) > 4'
4760         spic=$shared
4761     ;;
4762     x86)
4763         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4764         # Treat x32 as x64 for now. Note it also needs spic=$shared
4765         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4766             subarch=x86_64
4767         if test "$subarch" = "x86_64"; then
4768             spic=$shared
4769         fi
4770     ;;
4771     ppc)
4772         check_cc <<EOF && subarch="ppc64"
4773         int test[(int)sizeof(char*) - 7];
4774 EOF
4775     ;;
4776 esac
4777
4778 enable $subarch
4779 enabled spic && enable_weak pic
4780
4781 # OS specific
4782 case $target_os in
4783     aix)
4784         SHFLAGS=-shared
4785         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4786         enabled shared && add_ldflags -Wl,-brtl
4787         ;;
4788     android)
4789         disable symver
4790         enable section_data_rel_ro
4791         SLIB_INSTALL_NAME='$(SLIBNAME)'
4792         SLIB_INSTALL_LINKS=
4793         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4794         ;;
4795     haiku)
4796         prefix_default="/boot/common"
4797         network_extralibs="-lnetwork"
4798         host_extralibs=
4799         ;;
4800     sunos)
4801         SHFLAGS='-shared -Wl,-h,$$(@F)'
4802         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4803         network_extralibs="-lsocket -lnsl"
4804         add_cppflags -D__EXTENSIONS__
4805         # When using suncc to build, the Solaris linker will mark
4806         # an executable with each instruction set encountered by
4807         # the Solaris assembler.  As our libraries contain their own
4808         # guards for processor-specific code, instead suppress
4809         # generation of the HWCAPS ELF section on Solaris x86 only.
4810         enabled_all suncc x86 &&
4811             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4812             add_ldflags -Wl,-M,mapfile
4813         nm_default='nm -P -g'
4814         version_script='-M'
4815         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4816         ;;
4817     netbsd)
4818         disable symver
4819         oss_indev_extralibs="-lossaudio"
4820         oss_outdev_extralibs="-lossaudio"
4821         enabled gcc || check_ldflags -Wl,-zmuldefs
4822         ;;
4823     openbsd|bitrig)
4824         disable symver
4825         SHFLAGS='-shared'
4826         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4827         SLIB_INSTALL_LINKS=
4828         oss_indev_extralibs="-lossaudio"
4829         oss_outdev_extralibs="-lossaudio"
4830         ;;
4831     dragonfly)
4832         disable symver
4833         ;;
4834     freebsd)
4835         ;;
4836     bsd/os)
4837         add_extralibs -lpoll -lgnugetopt
4838         strip="strip -d"
4839         ;;
4840     darwin)
4841         enabled ppc && add_asflags -force_cpusubtype_ALL
4842         install_name_dir_default='$(SHLIBDIR)'
4843         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4844         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4845         strip="${strip} -x"
4846         add_ldflags -Wl,-dynamic,-search_paths_first
4847         SLIBSUF=".dylib"
4848         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4849         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4850         objformat="macho"
4851         enabled x86_64 && objformat="macho64"
4852         enabled_any pic shared x86_64 ||
4853             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4854         check_header dispatch/dispatch.h &&
4855             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4856         version_script='-exported_symbols_list'
4857         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4858         ;;
4859     msys*)
4860         die "Native MSYS builds are discouraged, please use the MINGW environment."
4861         ;;
4862     mingw32*|mingw64*)
4863         if test $target_os = "mingw32ce"; then
4864             disable network
4865         else
4866             target_os=mingw32
4867         fi
4868         LIBTARGET=i386
4869         if enabled x86_64; then
4870             LIBTARGET="i386:x86-64"
4871         elif enabled arm; then
4872             LIBTARGET=arm-wince
4873         fi
4874         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4875         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4876         shlibdir_default="$bindir_default"
4877         SLIBPREF=""
4878         SLIBSUF=".dll"
4879         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4880         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4881         dlltool="${cross_prefix}dlltool"
4882         if check_cmd lib.exe -list; then
4883             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4884             if enabled x86_64; then
4885                 LIBTARGET=x64
4886             fi
4887         elif check_cmd $dlltool --version; then
4888             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4889         fi
4890         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4891         SLIB_INSTALL_LINKS=
4892         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4893         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4894         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4895         objformat="win32"
4896         ranlib=:
4897         enable dos_paths
4898         check_ldflags -Wl,--nxcompat,--dynamicbase
4899         # Lets work around some stupidity in binutils.
4900         # ld will strip relocations from executables even though we need them
4901         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4902         # however ld then forgets what the entry point should be (oops) so we
4903         # have to manually (re)set it.
4904         if enabled x86_32; then
4905             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4906         elif enabled x86_64; then
4907             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4908             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4909             # Set image base >4GB for extra entropy with HEASLR
4910             add_ldexeflags -Wl,--image-base,0x140000000
4911             append SHFLAGS -Wl,--image-base,0x180000000
4912         fi
4913         ;;
4914     win32|win64)
4915         disable symver
4916         if enabled shared; then
4917             # Link to the import library instead of the normal static library
4918             # for shared libs.
4919             LD_LIB='%.lib'
4920             # Cannot build both shared and static libs with MSVC or icl.
4921             disable static
4922         fi
4923         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4924         shlibdir_default="$bindir_default"
4925         SLIBPREF=""
4926         SLIBSUF=".dll"
4927         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4928         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4929         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4930         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4931         SLIB_INSTALL_LINKS=
4932         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4933         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4934         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4935         objformat="win32"
4936         ranlib=:
4937         enable dos_paths
4938         ;;
4939     cygwin*)
4940         target_os=cygwin
4941         shlibdir_default="$bindir_default"
4942         SLIBPREF="cyg"
4943         SLIBSUF=".dll"
4944         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4945         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4946         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4947         SLIB_INSTALL_LINKS=
4948         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4949         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4950         objformat="win32"
4951         enable dos_paths
4952         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4953         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4954         ;;
4955     *-dos|freedos|opendos)
4956         network_extralibs="-lsocket"
4957         objformat="coff"
4958         enable dos_paths
4959         add_cppflags -U__STRICT_ANSI__
4960         ;;
4961     linux)
4962         enable dv1394
4963         enable section_data_rel_ro
4964         ;;
4965     irix*)
4966         target_os=irix
4967         ranlib="echo ignoring ranlib"
4968         ;;
4969     os/2*)
4970         strip="lxlite -CS"
4971         objformat="aout"
4972         add_cppflags -D_GNU_SOURCE
4973         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4974         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4975         LIBSUF="_s.a"
4976         SLIBPREF=""
4977         SLIBSUF=".dll"
4978         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4979         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4980         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4981             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4982             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4983             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4984             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4985         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4986             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4987         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4988         SLIB_INSTALL_LINKS=
4989         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4990         enable dos_paths
4991         enable_weak os2threads
4992         ;;
4993     gnu/kfreebsd)
4994         add_cppflags -D_BSD_SOURCE
4995         ;;
4996     gnu)
4997         ;;
4998     qnx)
4999         add_cppflags -D_QNX_SOURCE
5000         network_extralibs="-lsocket"
5001         ;;
5002     symbian)
5003         SLIBSUF=".dll"
5004         enable dos_paths
5005         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5006         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5007         add_ldflags -Wl,--target1-abs,--no-undefined \
5008                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5009                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5010         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5011                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5012                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5013         ;;
5014     osf1)
5015         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5016         ;;
5017     minix)
5018         ;;
5019     none)
5020         ;;
5021     *)
5022         die "Unknown OS '$target_os'."
5023         ;;
5024 esac
5025
5026 # test if creating links works
5027 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5028 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5029 mkdir "$link_dest"
5030 $ln_s "$link_dest" "$link_name"
5031 touch "$link_dest/test_file"
5032 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5033     # create link to source path
5034     [ -e src ] && rm src
5035     $ln_s "$source_path" src
5036     source_link=src
5037 else
5038     # creating directory links doesn't work
5039     # fall back to using the full source path
5040     source_link="$source_path"
5041 fi
5042 # cleanup
5043 rm -r "$link_dest"
5044 rm -r "$link_name"
5045
5046 # determine libc flavour
5047
5048 probe_libc(){
5049     pfx=$1
5050     pfx_no_=${pfx%_}
5051     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5052     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5053         eval ${pfx}libc_type=uclibc
5054         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5055     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5056         eval ${pfx}libc_type=glibc
5057         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5058     # MinGW headers can be installed on Cygwin, so check for newlib first.
5059     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5060         eval ${pfx}libc_type=newlib
5061         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5062     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5063     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5064         eval ${pfx}libc_type=mingw64
5065         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5066             add_compat msvcrt/snprintf.o
5067             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5068         fi
5069         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5070         eval test \$${pfx_no_}cc_type = "gcc" &&
5071             add_${pfx}cppflags -D__printf__=__gnu_printf__
5072     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5073          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5074         eval ${pfx}libc_type=mingw32
5075         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5076             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5077             die "ERROR: MinGW32 runtime version must be >= 3.15."
5078         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5079         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5080             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5081         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5082             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5083         eval test \$${pfx_no_}cc_type = "gcc" &&
5084             add_${pfx}cppflags -D__printf__=__gnu_printf__
5085     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5086         eval ${pfx}libc_type=msvcrt
5087         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5088             if [ "$pfx" = host_ ]; then
5089                 add_host_cppflags -Dsnprintf=_snprintf
5090             else
5091                 add_compat strtod.o strtod=avpriv_strtod
5092                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5093                                              _snprintf=avpriv_snprintf  \
5094                                              vsnprintf=avpriv_vsnprintf
5095             fi
5096         fi
5097         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5098         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5099         # 0x601 by default unless something else is set by the user.
5100         # This can easily lead to us detecting functions only present
5101         # in such new versions and producing binaries requiring windows 7.0.
5102         # Therefore explicitly set the default to XP unless the user has
5103         # set something else on the command line.
5104         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5105         # family. For these cases, configure is free to use any functions
5106         # found in the SDK headers by default. (Alternatively, we could force
5107         # _WIN32_WINNT to 0x0602 in that case.)
5108         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5109             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5110 #ifdef WINAPI_FAMILY
5111 #include <winapifamily.h>
5112 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5113 #error not desktop
5114 #endif
5115 #endif
5116 EOF
5117         if [ "$pfx" = "" ]; then
5118             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5119             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5120         fi
5121     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5122         eval ${pfx}libc_type=klibc
5123     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5124         eval ${pfx}libc_type=bionic
5125     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5126         eval ${pfx}libc_type=solaris
5127         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5128     fi
5129     check_${pfx}cc <<EOF
5130 #include <time.h>
5131 void *v = localtime_r;
5132 EOF
5133 test "$?" != 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
5134 #include <time.h>
5135 void *v = localtime_r;
5136 EOF
5137
5138 }
5139
5140 probe_libc
5141 test -n "$libc_type" && enable libc_$libc_type
5142 probe_libc host_
5143 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5144
5145 case $libc_type in
5146     bionic)
5147         add_compat strtod.o strtod=avpriv_strtod
5148         ;;
5149 esac
5150
5151 # hacks for compiler/libc/os combinations
5152
5153 if enabled_all tms470 libc_glibc; then
5154     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5155     add_cppflags -D__USER_LABEL_PREFIX__=
5156     add_cppflags -D__builtin_memset=memset
5157     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5158     add_cflags   -pds=48    # incompatible redefinition of macro
5159 fi
5160
5161 if enabled_all ccc libc_glibc; then
5162     add_ldflags -Wl,-z,now  # calls to libots crash without this
5163 fi
5164
5165 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5166     add_cppflags '-I\$(SRC_PATH)/compat/float'
5167
5168 esc(){
5169     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5170 }
5171
5172 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5173
5174 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5175
5176 set_default libdir
5177 : ${shlibdir_default:="$libdir"}
5178 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5179
5180 set_default $PATHS_LIST
5181 set_default nm
5182
5183 # we need to build at least one lib type
5184 if ! enabled_any static shared; then
5185     cat <<EOF
5186 At least one library type must be built.
5187 Specify --enable-static to build the static libraries or --enable-shared to
5188 build the shared libraries as well. To only build the shared libraries specify
5189 --disable-static in addition to --enable-shared.
5190 EOF
5191     exit 1
5192 fi
5193
5194 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5195
5196 enable_weak_pic() {
5197     disabled pic && return
5198     enable pic
5199     add_cppflags -DPIC
5200     case "$target_os" in
5201     mingw*|cygwin*)
5202         ;;
5203     *)
5204         add_cflags -fPIC
5205         ;;
5206     esac
5207     add_asflags  -fPIC
5208 }
5209
5210 enabled pic && enable_weak_pic
5211
5212 check_cc <<EOF || die "Symbol mangling check failed."
5213 int ff_extern;
5214 EOF
5215 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5216 extern_prefix=${sym%%ff_extern*}
5217
5218 check_cc <<EOF && enable_weak inline_asm
5219 void foo(void) { __asm__ volatile ("" ::); }
5220 EOF
5221
5222 _restrict=
5223 for restrict_keyword in restrict __restrict__ __restrict; do
5224     check_cc <<EOF && _restrict=$restrict_keyword && break
5225 void foo(char * $restrict_keyword p);
5226 EOF
5227 done
5228
5229 check_cc <<EOF && enable pragma_deprecated
5230 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5231 EOF
5232
5233 check_cc <<EOF && enable attribute_packed
5234 struct { int x; } __attribute__((packed)) x;
5235 EOF
5236
5237 check_cc <<EOF && enable attribute_may_alias
5238 union { int x; } __attribute__((may_alias)) x;
5239 EOF
5240
5241 check_cc <<EOF || die "endian test failed"
5242 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5243 EOF
5244 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5245
5246 if ! enabled ppc64 || enabled bigendian; then
5247     disable vsx
5248 fi
5249
5250 check_gas() {
5251     log "check_gas using '$as' as AS"
5252     # :vararg is used on aarch64, arm and ppc altivec
5253     check_as <<EOF || return 1
5254 .macro m n, y:vararg=0
5255 \n: .int \y
5256 .endm
5257 m x
5258 EOF
5259     # .altmacro is only used in arm asm
5260     ! enabled arm || check_as <<EOF || return 1
5261 .altmacro
5262 EOF
5263     enable gnu_as
5264     return 0
5265 }
5266
5267 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5268     nogas=:
5269     enabled_any arm aarch64 && nogas=die
5270     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5271     as_noop=-v
5272
5273     case $as_type in
5274         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5275         gcc)  gaspp_as_type=gas ;;
5276         *)    gaspp_as_type=$as_type ;;
5277     esac
5278
5279     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5280
5281     test "${as#*gas-preprocessor.pl}" != "$as" ||
5282     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5283         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5284
5285     if ! check_gas ; then
5286         as=${gas:=$as}
5287         check_gas || \
5288             $nogas "GNU assembler not found, install/update gas-preprocessor"
5289     fi
5290
5291     check_as <<EOF && enable as_func
5292 .func test
5293 .endfunc
5294 EOF
5295 fi
5296
5297 check_inline_asm inline_asm_labels '"1:\n"'
5298
5299 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5300
5301 if enabled aarch64; then
5302     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5303     # internal assembler in clang 3.3 does not support this instruction
5304     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5305     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5306
5307     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5308
5309 elif enabled alpha; then
5310
5311     check_cflags -mieee
5312
5313 elif enabled arm; then
5314
5315     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5316
5317     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5318 float func(float a, float b){ return a+b; }
5319 EOF
5320
5321     enabled thumb && check_cflags -mthumb || check_cflags -marm
5322
5323     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5324         enable vfp_args
5325     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5326         enable vfp_args
5327     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5328         case "${cross_prefix:-$cc}" in
5329             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5330             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5331 __asm__ (".eabi_attribute 28, 1");
5332 int main(void) { return 0; }
5333 EOF
5334         esac
5335         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5336     fi
5337
5338     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5339     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5340     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5341     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5342     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5343     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5344     enabled setend  && check_insn setend  'setend be'
5345
5346     [ $target_os = linux ] || [ $target_os = android ] ||
5347         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5348             $ARCH_EXT_LIST_ARM
5349
5350     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5351
5352     check_as <<EOF && enable as_dn_directive
5353 ra .dn d0.i16
5354 .unreq ra
5355 EOF
5356     check_as <<EOF && enable as_fpu_directive
5357 .fpu neon
5358 EOF
5359
5360     # llvm's integrated assembler supports .object_arch from llvm 3.5
5361     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5362 .object_arch armv4
5363 EOF
5364
5365     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5366
5367 elif enabled mips; then
5368
5369     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5370     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5371     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5372
5373     # Enable minimum ISA based on selected options
5374     if enabled mips64; then
5375         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5376         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5377         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5378     else
5379         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5380         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5381         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5382         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5383     fi
5384
5385     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5386     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5387     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5388     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5389     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5390
5391 elif enabled parisc; then
5392
5393     if enabled gcc; then
5394         case $($cc -dumpversion) in
5395             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5396         esac
5397     fi
5398
5399 elif enabled ppc; then
5400
5401     enable local_aligned_8 local_aligned_16 local_aligned_32
5402
5403     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5404     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5405     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5406     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5407
5408     # AltiVec flags: The FSF version of GCC differs from the Apple version
5409     if enabled altivec; then
5410         check_cflags -maltivec -mabi=altivec &&
5411         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5412         check_cflags -faltivec
5413
5414         # check if our compiler supports Motorola AltiVec C API
5415         check_cc <<EOF || disable altivec
5416 $inc_altivec_h
5417 int main(void) {
5418     vector signed int v1 = (vector signed int) { 0 };
5419     vector signed int v2 = (vector signed int) { 1 };
5420     v1 = vec_add(v1, v2);
5421     return 0;
5422 }
5423 EOF
5424
5425         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5426     fi
5427
5428     if enabled vsx; then
5429         check_cflags -mvsx &&
5430         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5431     fi
5432
5433     if enabled power8; then
5434         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5435     fi
5436
5437 elif enabled x86; then
5438
5439     check_builtin rdtsc    intrin.h   "__rdtsc()"
5440     check_builtin mm_empty mmintrin.h "_mm_empty()"
5441
5442     enable local_aligned_8 local_aligned_16 local_aligned_32
5443
5444     # check whether EBP is available on x86
5445     # As 'i' is stored on the stack, this program will crash
5446     # if the base pointer is used to access it because the
5447     # base pointer is cleared in the inline assembly code.
5448     check_exec_crash <<EOF && enable ebp_available
5449 volatile int i=0;
5450 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5451 return i;
5452 EOF
5453
5454     # check whether EBX is available on x86
5455     check_inline_asm ebx_available '""::"b"(0)' &&
5456         check_inline_asm ebx_available '"":::"%ebx"'
5457
5458     # check whether xmm clobbers are supported
5459     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5460
5461     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5462         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5463
5464     # check whether binutils is new enough to compile SSSE3/MMXEXT
5465     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5466     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5467
5468     if ! disabled_any asm mmx yasm; then
5469         if check_cmd $yasmexe --version; then
5470             enabled x86_64 && yasm_extra="-m amd64"
5471             yasm_debug="-g dwarf2"
5472         elif check_cmd nasm -v; then
5473             yasmexe=nasm
5474             yasm_debug="-g -F dwarf"
5475             if enabled x86_64; then
5476                 case "$objformat" in
5477                     elf)   objformat=elf64 ;;
5478                     win32) objformat=win64 ;;
5479                 esac
5480             fi
5481         fi
5482
5483         YASMFLAGS="-f $objformat $yasm_extra"
5484         enabled pic               && append YASMFLAGS "-DPIC"
5485         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5486         case "$objformat" in
5487             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5488         esac
5489
5490         check_yasm "movbe ecx, [5]" && enable yasm ||
5491             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5492         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5493         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5494         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5495         check_yasm "CPU amdnop" || disable cpunop
5496     fi
5497
5498     case "$cpu" in
5499         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5500             disable fast_clz
5501         ;;
5502     esac
5503
5504 fi
5505
5506 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5507
5508 check_ldflags -Wl,--as-needed
5509 check_ldflags -Wl,-z,noexecstack
5510
5511 if check_func dlopen && check_func dlsym; then
5512     ldl=
5513 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5514     ldl=-ldl
5515 fi
5516
5517 avisynth_demuxer_extralibs='$ldl'
5518 cuda_extralibs='$ldl'
5519 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5520 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5521 frei0r_filter_extralibs='$ldl'
5522 frei0r_src_filter_extralibs='$ldl'
5523 ladspa_filter_extralibs='$ldl'
5524 nvenc_extralibs='$ldl'
5525 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5526 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5527
5528 if ! disabled network; then
5529     check_func getaddrinfo $network_extralibs
5530     check_func inet_aton $network_extralibs
5531
5532     check_type netdb.h "struct addrinfo"
5533     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5534     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5535     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5536     check_type poll.h "struct pollfd"
5537     check_type netinet/sctp.h "struct sctp_event_subscribe"
5538     check_struct "sys/socket.h" "struct msghdr" msg_flags
5539     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5540     check_type netinet/in.h "struct sockaddr_in6"
5541     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5542     check_type "sys/types.h sys/socket.h" socklen_t
5543
5544     # Prefer arpa/inet.h over winsock2
5545     if check_header arpa/inet.h ; then
5546         check_func closesocket
5547     elif check_header winsock2.h ; then
5548         check_func_headers winsock2.h closesocket -lws2 &&
5549             network_extralibs="-lws2" ||
5550         { check_func_headers winsock2.h closesocket -lws2_32 &&
5551             network_extralibs="-lws2_32"; } || disable winsock2_h network
5552         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5553
5554         check_type ws2tcpip.h socklen_t
5555         check_type ws2tcpip.h "struct addrinfo"
5556         check_type ws2tcpip.h "struct group_source_req"
5557         check_type ws2tcpip.h "struct ip_mreq_source"
5558         check_type ws2tcpip.h "struct ipv6_mreq"
5559         check_type winsock2.h "struct pollfd"
5560         check_struct winsock2.h "struct sockaddr" sa_len
5561         check_type ws2tcpip.h "struct sockaddr_in6"
5562         check_type ws2tcpip.h "struct sockaddr_storage"
5563     else
5564         disable network
5565     fi
5566 fi
5567
5568 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5569 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5570 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5571 check_builtin sarestart signal.h "SA_RESTART"
5572 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5573 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5574 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5575 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5576 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5577
5578 case "$custom_allocator" in
5579     jemalloc)
5580         # jemalloc by default does not use a prefix
5581         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5582     ;;
5583     tcmalloc)
5584         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5585         malloc_prefix=tc_
5586     ;;
5587 esac
5588
5589 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5590 check_func  ${malloc_prefix}memalign            && enable memalign
5591 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5592
5593 check_func  access
5594 check_func_headers stdlib.h arc4random
5595 check_func_headers time.h clock_gettime ||
5596     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5597 check_func  fcntl
5598 check_func  fork
5599 check_func  gethrtime
5600 check_func  getopt
5601 check_func  getrusage
5602 check_func  gettimeofday
5603 check_func  isatty
5604 check_func  mach_absolute_time
5605 check_func  mkstemp
5606 check_func  mmap
5607 check_func  mprotect
5608 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5609 check_func_headers time.h nanosleep ||
5610     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5611 check_func  sched_getaffinity
5612 check_func  setrlimit
5613 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5614 check_func  strerror_r
5615 check_func  sysconf
5616 check_func  sysctl
5617 check_func  usleep
5618
5619 check_func_headers conio.h kbhit
5620 check_func_headers io.h setmode
5621 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5622 check_func_headers stdlib.h getenv
5623 check_func_headers sys/stat.h lstat
5624
5625 check_func_headers windows.h GetProcessAffinityMask
5626 check_func_headers windows.h GetProcessTimes
5627 check_func_headers windows.h GetSystemTimeAsFileTime
5628 check_func_headers windows.h LoadLibrary
5629 check_func_headers windows.h MapViewOfFile
5630 check_func_headers windows.h PeekNamedPipe
5631 check_func_headers windows.h SetConsoleTextAttribute
5632 check_func_headers windows.h SetConsoleCtrlHandler
5633 check_func_headers windows.h Sleep
5634 check_func_headers windows.h VirtualAlloc
5635 check_struct windows.h "CONDITION_VARIABLE" Ptr
5636 check_func_headers glob.h glob
5637 enabled xlib &&
5638     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5639
5640 check_header AudioToolbox/AudioToolbox.h
5641 check_header d3d11.h
5642 check_header direct.h
5643 check_header dirent.h
5644 check_header dlfcn.h
5645 check_header dxva.h
5646 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5647 check_header io.h
5648 check_header libcrystalhd/libcrystalhd_if.h
5649 check_header mach/mach_time.h
5650 check_header malloc.h
5651 check_header net/udplite.h
5652 check_header poll.h
5653 check_header sys/mman.h
5654 check_header sys/param.h
5655 check_header sys/resource.h
5656 check_header sys/select.h
5657 check_header sys/time.h
5658 check_header sys/un.h
5659 check_header termios.h
5660 check_header unistd.h
5661 check_header valgrind/valgrind.h
5662 check_header VideoDecodeAcceleration/VDADecoder.h
5663 check_header VideoToolbox/VideoToolbox.h
5664 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5665 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5666 check_header windows.h
5667 check_header X11/extensions/XvMClib.h
5668 check_header asm/types.h
5669
5670 # it seems there are versions of clang in some distros that try to use the
5671 # gcc headers, which explodes for stdatomic
5672 # so we also check that atomics actually work here
5673 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5674
5675 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5676 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5677 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5678
5679 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5680
5681 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5682
5683 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5684 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5685 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5686 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5687 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5688
5689 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5690 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5691 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5692 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5693 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5694 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5695 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5696 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5697
5698 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5699
5700 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5701
5702 if ! disabled w32threads && ! enabled pthreads; then
5703     check_func_headers "windows.h process.h" _beginthreadex &&
5704         enable w32threads || disable w32threads
5705     if ! enabled w32threads && enabled winrt; then
5706         check_func_headers "windows.h" CreateThread &&
5707             enable w32threads || disable w32threads
5708     fi
5709 fi
5710
5711 # check for some common methods of building with pthread support
5712 # do this before the optional library checks as some of them require pthreads
5713 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5714     if check_lib pthreads pthread.h pthread_join   -pthread &&
5715        check_lib pthreads pthread.h pthread_create -pthread; then
5716         add_cflags -pthread
5717     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5718          check_lib pthreads pthread.h pthread_create -pthreads; then
5719         add_cflags -pthreads
5720     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5721          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5722         add_cflags -ldl -pthread
5723     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5724          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5725         :
5726     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5727          check_lib pthreads pthread.h pthread_create -lpthread; then
5728         :
5729     elif check_func pthread_join && check_func pthread_create; then
5730         enable pthreads
5731     fi
5732     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5733 fi
5734
5735
5736 if enabled pthreads; then
5737   check_func pthread_cancel
5738 fi
5739
5740 enabled pthreads &&
5741     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5742
5743 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5744 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5745 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5746
5747 check_lib libm math.h sin -lm && LIBM="-lm"
5748 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5749
5750 atan2f_args=2
5751 copysign_args=2
5752 hypot_args=2
5753 ldexpf_args=2
5754 powf_args=2
5755
5756 for func in $MATH_FUNCS; do
5757     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5758 done
5759
5760 for func in $COMPLEX_FUNCS; do
5761     eval check_complexfunc $func \${${func}_args:-1}
5762 done
5763
5764 # these are off by default, so fail if requested and not available
5765 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5766 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5767                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5768 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5769 enabled cuvid             && { enabled cuda ||
5770                                die "ERROR: CUVID requires CUDA"; }
5771 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5772 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5773 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5774 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5775                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5776 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5777 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5778 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5779 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5780                                check_lib jni "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5781 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5782 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5783 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5784 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5785 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5786 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5787                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5788                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5789 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5790 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5791 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5792                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5793                                  warn "using libfdk without pkg-config"; } }
5794 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"
5795 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5796 enabled fontconfig        && enable libfontconfig
5797 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5798 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5799 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5800 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5801 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5802                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5803                                done || die "ERROR: libgsm not found"; }
5804 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5805 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5806 # While it may appear that require is being used as a pkg-config
5807 # fallback for libmfx, it is actually being used to detect a different
5808 # installation route altogether.  If libmfx is installed via the Intel
5809 # Media SDK or Intel Media Server Studio, these don't come with
5810 # pkg-config support.  Instead, users should make sure that the build
5811 # can find the libraries and headers through other means.
5812 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5813                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5814 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5815 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5816 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5817 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5818 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5819 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5820 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5821                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5822                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5823                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5824 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5825 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5826                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5827                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5828                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5829                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5830                                die "ERROR: libopenjpeg not found"; }
5831 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5832 enabled libopus           && {
5833     enabled libopus_decoder && {
5834         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5835     }
5836     enabled libopus_encoder && {
5837         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5838     }
5839 }
5840 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5841 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5842 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5843 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5844 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5845 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5846                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5847 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5848 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5849 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5850 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5851 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5852 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5853 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5854                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5855                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5856 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5857 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5858 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5859 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5860
5861 enabled libvpx            && {
5862     enabled libvpx_vp8_decoder && {
5863         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5864             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5865                 die "ERROR: libvpx decoder version must be >=0.9.1";
5866     }
5867     enabled libvpx_vp8_encoder && {
5868         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5869             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5870                 die "ERROR: libvpx encoder version must be >=0.9.7";
5871     }
5872     enabled libvpx_vp9_decoder && {
5873         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5874             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5875     }
5876     enabled libvpx_vp9_encoder && {
5877         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5878             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5879     }
5880     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5881         die "libvpx enabled but no supported decoders found"
5882     fi
5883 }
5884
5885 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5886 enabled libwebp           && {
5887     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5888     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5889 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5890                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5891                                  warn "using libx264 without pkg-config"; } } &&
5892                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5893                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5894                              { check_cpp_condition x264.h "X264_MPEG2" &&
5895                                enable libx262; }
5896 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5897                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5898                                die "ERROR: libx265 version must be >= 68."; }
5899 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5900 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5901 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5902 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5903 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5904                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5905                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5906 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5907 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5908                                { ! enabled cross_compile &&
5909                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5910                                  add_ldflags -L/opt/vc/lib/ &&
5911                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5912                                die "ERROR: mmal not found" &&
5913                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5914 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5915 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5916                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5917                                die "ERROR: openal not found"; } &&
5918                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5919                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5920 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5921                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5922                                die "ERROR: opencl not found"; } &&
5923                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5924                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5925                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5926 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5927                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5928                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5929                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5930                                die "ERROR: opengl not found."
5931                              }
5932 enabled omx_rpi           && { check_header OMX_Core.h ||
5933                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5934                                die "ERROR: OpenMAX IL headers not found"; }
5935 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5936 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5937                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5938                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5939                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5940                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5941                                die "ERROR: openssl not found"; }
5942 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5943
5944 if enabled gcrypt; then
5945     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5946     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5947         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5948         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5949         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5950             die "ERROR: gcrypt not found"
5951         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5952     else
5953         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5954     fi
5955 fi
5956
5957 disabled sdl && disable sdl2
5958 if ! disabled sdl2; then
5959     SDL2_CONFIG="${cross_prefix}sdl2-config"
5960     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5961         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5962         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5963         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5964     else
5965       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5966         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5967         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5968         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5969         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5970         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5971       fi
5972     fi
5973     if test $target_os = "mingw32"; then
5974         sdl2_extralibs="$sdl2_extralibs -mconsole"
5975     fi
5976 fi
5977 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5978
5979 if enabled decklink; then
5980     case $target_os in
5981         mingw32*|mingw64*|win32|win64)
5982             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
5983             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
5984             ;;
5985     esac
5986 fi
5987
5988 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5989     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
5990
5991 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5992                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5993
5994 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5995 enabled makeinfo \
5996     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5997     && enable makeinfo_html || disable makeinfo_html
5998 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5999 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6000 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6001 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6002
6003 check_header linux/fb.h
6004 check_header linux/videodev.h
6005 check_header linux/videodev2.h
6006 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6007
6008 check_header sys/videoio.h
6009 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6010
6011 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6012 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6013 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6014 # w32api 3.12 had it defined wrong
6015 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6016
6017 check_type "dshow.h" IBaseFilter
6018
6019 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6020 { check_header dev/bktr/ioctl_meteor.h &&
6021   check_header dev/bktr/ioctl_bt848.h; } ||
6022 { check_header machine/ioctl_meteor.h &&
6023   check_header machine/ioctl_bt848.h; } ||
6024 { check_header dev/video/meteor/ioctl_meteor.h &&
6025   check_header dev/video/bktr/ioctl_bt848.h; } ||
6026 check_header dev/ic/bt8xx.h
6027
6028 if check_struct sys/soundcard.h audio_buf_info bytes; then
6029     enable_safe sys/soundcard.h
6030 else
6031     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6032     #include <sys/soundcard.h>
6033     audio_buf_info abc;
6034 EOF
6035 fi
6036 check_header soundcard.h
6037
6038 enabled_any alsa_indev alsa_outdev &&
6039     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6040
6041 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6042     check_func jack_port_get_latency_range -ljack
6043
6044 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6045
6046 if enabled libcdio; then
6047     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6048     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6049     die "ERROR: No usable libcdio/cdparanoia found"
6050 fi
6051
6052 if ! disabled libxcb; then
6053     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6054         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6055     } && enable libxcb
6056
6057 if enabled libxcb; then
6058     disabled libxcb_shm || {
6059         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6060             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6061         } && check_header sys/shm.h && enable libxcb_shm; }
6062
6063     disabled libxcb_xfixes || {
6064         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6065             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6066         } && enable libxcb_xfixes; }
6067
6068     disabled libxcb_shape || {
6069         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6070             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6071         } && enable libxcb_shape; }
6072
6073     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6074     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6075 fi
6076 fi
6077
6078 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6079
6080 enabled dxva2api_h &&
6081     check_cc <<EOF && enable dxva2api_cobj
6082 #define _WIN32_WINNT 0x0600
6083 #define COBJMACROS
6084 #include <windows.h>
6085 #include <d3d9.h>
6086 #include <dxva2api.h>
6087 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6088 EOF
6089
6090 enabled dxva2 &&
6091     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6092
6093 enabled vaapi &&
6094     check_lib vaapi va/va.h vaInitialize -lva
6095
6096 enabled vaapi &&
6097     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6098     disable vaapi
6099
6100 enabled vaapi &&
6101     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6102
6103 enabled vaapi &&
6104     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6105
6106 enabled vdpau &&
6107     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6108     disable vdpau
6109
6110 enabled vdpau &&
6111     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6112
6113 if enabled x86; then
6114     case $target_os in
6115         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6116             ;;
6117         *)
6118             disable cuda cuvid nvenc
6119             ;;
6120     esac
6121 else
6122     disable cuda cuvid nvenc
6123 fi
6124
6125 enabled nvenc &&
6126     check_cc -I$source_path <<EOF || disable nvenc
6127 #include "compat/nvenc/nvEncodeAPI.h"
6128 NV_ENCODE_API_FUNCTION_LIST flist;
6129 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6130 int main(void) { return 0; }
6131 EOF
6132
6133 # Funny iconv installations are not unusual, so check it after all flags have been set
6134 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6135
6136 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6137
6138 # add some useful compiler flags if supported
6139 check_cflags -Wdeclaration-after-statement
6140 check_cflags -Wall
6141 check_cflags -Wdisabled-optimization
6142 check_cflags -Wpointer-arith
6143 check_cflags -Wredundant-decls
6144 check_cflags -Wwrite-strings
6145 check_cflags -Wtype-limits
6146 check_cflags -Wundef
6147 check_cflags -Wmissing-prototypes
6148 check_cflags -Wno-pointer-to-int-cast
6149 check_cflags -Wstrict-prototypes
6150 check_cflags -Wempty-body
6151
6152 if enabled extra_warnings; then
6153     check_cflags -Wcast-qual
6154     check_cflags -Wextra
6155     check_cflags -Wpedantic
6156 fi
6157
6158 check_disable_warning(){
6159     warning_flag=-W${1#-Wno-}
6160     test_cflags $warning_flag && add_cflags $1
6161 }
6162
6163 check_disable_warning -Wno-parentheses
6164 check_disable_warning -Wno-switch
6165 check_disable_warning -Wno-format-zero-length
6166 check_disable_warning -Wno-pointer-sign
6167 check_disable_warning -Wno-unused-const-variable
6168
6169 check_disable_warning_headers(){
6170     warning_flag=-W${1#-Wno-}
6171     test_cflags $warning_flag && add_cflags_headers $1
6172 }
6173
6174 check_disable_warning_headers -Wno-deprecated-declarations
6175 check_disable_warning_headers -Wno-unused-variable
6176
6177 # add some linker flags
6178 check_ldflags -Wl,--warn-common
6179 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6180 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6181 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6182 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6183
6184 # add some strip flags
6185 # -wN '..@*' is more selective than -x, but not available everywhere.
6186 check_stripflags -wN \'..@*\' || check_stripflags -x
6187
6188 enabled neon_clobber_test &&
6189     check_ldflags -Wl,--wrap,avcodec_open2              \
6190                   -Wl,--wrap,avcodec_decode_audio4      \
6191                   -Wl,--wrap,avcodec_decode_video2      \
6192                   -Wl,--wrap,avcodec_decode_subtitle2   \
6193                   -Wl,--wrap,avcodec_encode_audio2      \
6194                   -Wl,--wrap,avcodec_encode_video2      \
6195                   -Wl,--wrap,avcodec_encode_subtitle    \
6196                   -Wl,--wrap,avcodec_send_packet        \
6197                   -Wl,--wrap,avcodec_receive_packet     \
6198                   -Wl,--wrap,avcodec_send_frame         \
6199                   -Wl,--wrap,avcodec_receive_frame      \
6200                   -Wl,--wrap,swr_convert                \
6201                   -Wl,--wrap,avresample_convert ||
6202     disable neon_clobber_test
6203
6204 enabled xmm_clobber_test &&
6205     check_ldflags -Wl,--wrap,avcodec_open2              \
6206                   -Wl,--wrap,avcodec_decode_audio4      \
6207                   -Wl,--wrap,avcodec_decode_video2      \
6208                   -Wl,--wrap,avcodec_decode_subtitle2   \
6209                   -Wl,--wrap,avcodec_encode_audio2      \
6210                   -Wl,--wrap,avcodec_encode_video2      \
6211                   -Wl,--wrap,avcodec_encode_subtitle    \
6212                   -Wl,--wrap,avcodec_send_packet        \
6213                   -Wl,--wrap,avcodec_receive_packet     \
6214                   -Wl,--wrap,avcodec_send_frame         \
6215                   -Wl,--wrap,avcodec_receive_frame      \
6216                   -Wl,--wrap,swr_convert                \
6217                   -Wl,--wrap,avresample_convert         \
6218                   -Wl,--wrap,sws_scale ||
6219     disable xmm_clobber_test
6220
6221 check_ld "cc" <<EOF && enable proper_dce
6222 extern const int array[512];
6223 static inline int func(void) { return array[0]; }
6224 int main(void) { return 0; }
6225 EOF
6226
6227 if enabled proper_dce; then
6228     echo "X { local: *; };" > $TMPV
6229     if test_ldflags -Wl,${version_script},$TMPV; then
6230         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6231         check_cc <<EOF && enable symver_asm_label
6232 void ff_foo(void) __asm__ ("av_foo@VERSION");
6233 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6234 EOF
6235         check_cc <<EOF && enable symver_gnu_asm
6236 __asm__(".symver ff_foo,av_foo@VERSION");
6237 void ff_foo(void) {}
6238 EOF
6239     fi
6240 fi
6241
6242 if [ -z "$optflags" ]; then
6243     if enabled small; then
6244         optflags=$cflags_size
6245     elif enabled optimizations; then
6246         optflags=$cflags_speed
6247     else
6248         optflags=$cflags_noopt
6249     fi
6250 fi
6251
6252 if [ -z "$nvccflags" ]; then
6253     nvccflags=$nvccflags_default
6254 fi
6255
6256 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6257     nvccflags="$nvccflags -m64"
6258 else
6259     nvccflags="$nvccflags -m32"
6260 fi
6261
6262 check_optflags(){
6263     check_cflags "$@"
6264     enabled lto && check_ldflags "$@"
6265 }
6266
6267
6268 if enabled lto; then
6269     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6270     check_cflags  -flto
6271     check_ldflags -flto $cpuflags
6272     disable inline_asm_direct_symbol_refs
6273 fi
6274
6275 check_optflags $optflags
6276 check_optflags -fno-math-errno
6277 check_optflags -fno-signed-zeros
6278
6279 enabled ftrapv && check_cflags -ftrapv
6280
6281 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6282 int x;
6283 EOF
6284
6285
6286 if enabled icc; then
6287     # Just warnings, no remarks
6288     check_cflags -w1
6289     # -wd: Disable following warnings
6290     # 144, 167, 556: -Wno-pointer-sign
6291     # 188: enumerated type mixed with another type
6292     # 1292: attribute "foo" ignored
6293     # 1419: external declaration in primary source file
6294     # 10006: ignoring unknown option -fno-signed-zeros
6295     # 10148: ignoring unknown option -Wno-parentheses
6296     # 10156: ignoring option '-W'; no argument required
6297     # 13200: No EMMS instruction before call to function
6298     # 13203: No EMMS instruction before return from function
6299     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6300     # 11030: Warning unknown option --as-needed
6301     # 10156: ignoring option '-export'; no argument required
6302     check_ldflags -wd10156,11030
6303     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6304     enable ebp_available
6305     # The test above does not test linking
6306     enabled lto && disable symver_asm_label
6307     if enabled x86_32; then
6308         icc_version=$($cc -dumpversion)
6309         test ${icc_version%%.*} -ge 11 &&
6310             check_cflags -falign-stack=maintain-16-byte ||
6311             disable aligned_stack
6312     fi
6313 elif enabled ccc; then
6314     # disable some annoying warnings
6315     add_cflags -msg_disable bitnotint
6316     add_cflags -msg_disable mixfuncvoid
6317     add_cflags -msg_disable nonstandcast
6318     add_cflags -msg_disable unsupieee
6319 elif enabled gcc; then
6320     check_optflags -fno-tree-vectorize
6321     check_cflags -Werror=format-security
6322     check_cflags -Werror=implicit-function-declaration
6323     check_cflags -Werror=missing-prototypes
6324     check_cflags -Werror=return-type
6325     check_cflags -Werror=vla
6326     check_cflags -Wformat
6327     check_cflags -fdiagnostics-color=auto
6328     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6329 elif enabled llvm_gcc; then
6330     check_cflags -mllvm -stack-alignment=16
6331 elif enabled clang; then
6332     check_cflags -mllvm -stack-alignment=16
6333     check_cflags -mstack-alignment=16
6334     check_cflags -Qunused-arguments
6335     check_cflags -Werror=implicit-function-declaration
6336     check_cflags -Werror=missing-prototypes
6337     check_cflags -Werror=return-type
6338 elif enabled cparser; then
6339     add_cflags -Wno-missing-variable-declarations
6340     add_cflags -Wno-empty-statement
6341 elif enabled armcc; then
6342     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6343     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6344     # 2523: use of inline assembly is deprecated
6345     add_cflags -W${armcc_opt},--diag_suppress=2523
6346     add_cflags -W${armcc_opt},--diag_suppress=1207
6347     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6348     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6349     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6350     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6351 elif enabled tms470; then
6352     add_cflags -pds=824 -pds=837
6353     disable inline_asm
6354 elif enabled pathscale; then
6355     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6356 elif enabled_any msvc icl; then
6357     enabled x86_32 && disable aligned_stack
6358     enabled_all x86_32 debug && add_cflags -Oy-
6359     enabled debug && add_ldflags -debug
6360     enable pragma_deprecated
6361     if enabled icl; then
6362         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6363         # (correctly) on icl 13.x.
6364         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6365             add_cflags -Qansi-alias
6366         # Some inline asm is not compilable in debug
6367         if enabled debug; then
6368             disable ebp_available
6369             disable ebx_available
6370         fi
6371     fi
6372     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6373     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6374     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6375     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6376     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6377     # MSVC 2013 and newer can handle it fine.
6378     # If this declspec fails, force including stdlib.h before the restrict redefinition
6379     # happens in config.h.
6380     if [ $_restrict != restrict ]; then
6381         check_cc <<EOF || add_cflags -FIstdlib.h
6382 __declspec($_restrict) void* foo(int);
6383 EOF
6384     fi
6385     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6386     # Issue has been fixed in MSVC v19.00.24218.
6387     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6388         check_cflags -d2SSAOptimizer-
6389     # enable utf-8 source processing on VS2015 U2 and newer
6390     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6391         add_cflags -utf-8
6392 fi
6393
6394 for pfx in "" host_; do
6395     varname=${pfx%_}cc_type
6396     eval "type=\$$varname"
6397     if [ $type = "msvc" ]; then
6398         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6399 static inline int foo(int a) { return a; }
6400 EOF
6401     fi
6402 done
6403
6404 case $as_type in
6405     clang)
6406         add_asflags -Qunused-arguments
6407     ;;
6408 esac
6409
6410 case $ld_type in
6411     clang)
6412         check_ldflags -Qunused-arguments
6413     ;;
6414 esac
6415
6416 case $target_os in
6417     osf1)
6418         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6419     ;;
6420 esac
6421
6422 enable frame_thread_encoder
6423
6424 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6425
6426 check_deps $CONFIG_LIST       \
6427            $CONFIG_EXTRA      \
6428            $HAVE_LIST         \
6429            $ALL_COMPONENTS    \
6430
6431 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"
6432
6433
6434 if test $target_os = "haiku"; then
6435     disable memalign
6436     disable posix_memalign
6437 fi
6438
6439 # add_dep lib dep
6440 # -> enable ${lib}_deps_${dep}
6441 # -> add $dep to ${lib}_deps only once
6442 add_dep() {
6443     lib=$1
6444     dep=$2
6445     enabled "${lib}_deps_${dep}" && return 0
6446     enable  "${lib}_deps_${dep}"
6447     prepend "${lib}_deps" $dep
6448 }
6449
6450 # merge deps lib components
6451 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6452 merge_deps() {
6453     lib=$1
6454     shift
6455     for comp in $*; do
6456         enabled $comp || continue
6457         eval "dep=\"\$${comp}_deps\""
6458         for d in $dep; do
6459             add_dep $lib $d
6460         done
6461     done
6462 }
6463
6464 merge_deps libavfilter $FILTER_LIST
6465
6466 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6467
6468 for thread in $THREADS_LIST; do
6469     if enabled $thread; then
6470         test -n "$thread_type" &&
6471             die "ERROR: Only one thread type must be selected." ||
6472             thread_type="$thread"
6473     fi
6474 done
6475
6476 if disabled stdatomic_h; then
6477     if enabled atomics_gcc; then
6478         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6479     elif enabled atomics_win32; then
6480         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6481     elif enabled atomics_suncc; then
6482         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6483     elif enabled pthreads; then
6484         add_compat atomics/pthread/stdatomic.o
6485         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6486     else
6487         enabled threads && die "Threading is enabled, but no atomics are available"
6488         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6489     fi
6490 fi
6491
6492 # Check if requested libraries were found.
6493 for lib in $AUTODETECT_LIBS; do
6494     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6495 done
6496
6497 enabled zlib && add_cppflags -DZLIB_CONST
6498
6499 # conditional library dependencies, in linking order
6500 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6501 enabled afir_filter         && prepend avfilter_deps "avcodec"
6502 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6503 enabled aresample_filter    && prepend avfilter_deps "swresample"
6504 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6505 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6506 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6507 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6508 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6509 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6510 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6511 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6512 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6513 enabled pan_filter          && prepend avfilter_deps "swresample"
6514 enabled pp_filter           && prepend avfilter_deps "postproc"
6515 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6516 enabled resample_filter && prepend avfilter_deps "avresample"
6517 enabled sab_filter          && prepend avfilter_deps "swscale"
6518 enabled scale_filter    && prepend avfilter_deps "swscale"
6519 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6520 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6521 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6522 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6523 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6524 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6525 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6526 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6527 enabled spp_filter          && prepend avfilter_deps "avcodec"
6528 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6529 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6530 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6531
6532 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6533
6534 enabled opus_decoder    && prepend avcodec_deps "swresample"
6535
6536 expand_deps(){
6537     lib_deps=${1}_deps
6538     eval "deps=\$$lib_deps"
6539     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6540     unique $lib_deps
6541 }
6542
6543 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6544 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6545
6546 map 'expand_deps $v' $LIBRARY_LIST
6547
6548 license="LGPL version 2.1 or later"
6549 if enabled nonfree; then
6550     license="nonfree and unredistributable"
6551 elif enabled gplv3; then
6552     license="GPL version 3 or later"
6553 elif enabled lgplv3; then
6554     license="LGPL version 3 or later"
6555 elif enabled gpl; then
6556     license="GPL version 2 or later"
6557 fi
6558
6559 if test "$quiet" != "yes"; then
6560
6561 echo "install prefix            $prefix"
6562 echo "source path               $source_path"
6563 echo "C compiler                $cc"
6564 echo "C library                 $libc_type"
6565 if test "$host_cc" != "$cc"; then
6566     echo "host C compiler           $host_cc"
6567     echo "host C library            $host_libc_type"
6568 fi
6569 echo "ARCH                      $arch ($cpu)"
6570 if test "$build_suffix" != ""; then
6571     echo "build suffix              $build_suffix"
6572 fi
6573 if test "$progs_suffix" != ""; then
6574     echo "progs suffix              $progs_suffix"
6575 fi
6576 if test "$extra_version" != ""; then
6577     echo "version string suffix     $extra_version"
6578 fi
6579 echo "big-endian                ${bigendian-no}"
6580 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6581 if enabled x86; then
6582     echo "${yasmexe}                      ${yasm-no}"
6583     echo "MMX enabled               ${mmx-no}"
6584     echo "MMXEXT enabled            ${mmxext-no}"
6585     echo "3DNow! enabled            ${amd3dnow-no}"
6586     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6587     echo "SSE enabled               ${sse-no}"
6588     echo "SSSE3 enabled             ${ssse3-no}"
6589     echo "AESNI enabled             ${aesni-no}"
6590     echo "AVX enabled               ${avx-no}"
6591     echo "XOP enabled               ${xop-no}"
6592     echo "FMA3 enabled              ${fma3-no}"
6593     echo "FMA4 enabled              ${fma4-no}"
6594     echo "i686 features enabled     ${i686-no}"
6595     echo "CMOV is fast              ${fast_cmov-no}"
6596     echo "EBX available             ${ebx_available-no}"
6597     echo "EBP available             ${ebp_available-no}"
6598 fi
6599 if enabled aarch64; then
6600     echo "NEON enabled              ${neon-no}"
6601     echo "VFP enabled               ${vfp-no}"
6602 fi
6603 if enabled arm; then
6604     echo "ARMv5TE enabled           ${armv5te-no}"
6605     echo "ARMv6 enabled             ${armv6-no}"
6606     echo "ARMv6T2 enabled           ${armv6t2-no}"
6607     echo "VFP enabled               ${vfp-no}"
6608     echo "NEON enabled              ${neon-no}"
6609     echo "THUMB enabled             ${thumb-no}"
6610 fi
6611 if enabled mips; then
6612     echo "MIPS FPU enabled          ${mipsfpu-no}"
6613     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6614     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6615     echo "MIPS MSA enabled          ${msa-no}"
6616     echo "LOONGSON MMI enabled      ${mmi-no}"
6617 fi
6618 if enabled ppc; then
6619     echo "AltiVec enabled           ${altivec-no}"
6620     echo "VSX enabled               ${vsx-no}"
6621     echo "POWER8 enabled            ${power8-no}"
6622     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6623     echo "dcbzl available           ${dcbzl-no}"
6624 fi
6625 echo "debug symbols             ${debug-no}"
6626 echo "strip symbols             ${stripping-no}"
6627 echo "optimize for size         ${small-no}"
6628 echo "optimizations             ${optimizations-no}"
6629 echo "static                    ${static-no}"
6630 echo "shared                    ${shared-no}"
6631 echo "postprocessing support    ${postproc-no}"
6632 echo "network support           ${network-no}"
6633 echo "threading support         ${thread_type-no}"
6634 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6635 echo "texi2html enabled         ${texi2html-no}"
6636 echo "perl enabled              ${perl-no}"
6637 echo "pod2man enabled           ${pod2man-no}"
6638 echo "makeinfo enabled          ${makeinfo-no}"
6639 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6640 test -n "$random_seed" &&
6641     echo "random seed               ${random_seed}"
6642 echo
6643
6644 echo "External libraries:"
6645 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6646 echo
6647
6648 echo "External libraries providing hardware acceleration:"
6649 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6650 echo
6651
6652 echo "Libraries:"
6653 print_enabled '' $LIBRARY_LIST | print_in_columns
6654 echo
6655
6656 echo "Programs:"
6657 print_enabled '' $PROGRAM_LIST | print_in_columns
6658 echo
6659
6660 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6661     echo "Enabled ${type}s:"
6662     eval list=\$$(toupper $type)_LIST
6663     print_enabled '_*' $list | print_in_columns
6664     echo
6665 done
6666
6667 if test -n "$ignore_tests"; then
6668     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6669     echo "Ignored FATE tests:"
6670     echo $ignore_tests | print_in_columns
6671     echo
6672 fi
6673
6674 echo "License: $license"
6675
6676 echo "Creating configuration files ..."
6677
6678 fi # test "$quiet" != "yes"
6679
6680 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6681
6682 enabled stripping || strip="echo skipping strip"
6683
6684 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6685
6686 cat > ffbuild/config.mak <<EOF
6687 # Automatically generated by configure - do not modify!
6688 ifndef FFMPEG_CONFIG_MAK
6689 FFMPEG_CONFIG_MAK=1
6690 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6691 prefix=$prefix
6692 LIBDIR=\$(DESTDIR)$libdir
6693 SHLIBDIR=\$(DESTDIR)$shlibdir
6694 INCDIR=\$(DESTDIR)$incdir
6695 BINDIR=\$(DESTDIR)$bindir
6696 DATADIR=\$(DESTDIR)$datadir
6697 DOCDIR=\$(DESTDIR)$docdir
6698 MANDIR=\$(DESTDIR)$mandir
6699 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6700 INSTALL_NAME_DIR=$install_name_dir
6701 SRC_PATH=$source_path
6702 SRC_LINK=$source_link
6703 ifndef MAIN_MAKEFILE
6704 SRC_PATH:=\$(SRC_PATH:.%=..%)
6705 endif
6706 CC_IDENT=$cc_ident
6707 ARCH=$arch
6708 INTRINSICS=$intrinsics
6709 CC=$cc
6710 CXX=$cxx
6711 AS=$as
6712 OBJCC=$objcc
6713 LD=$ld
6714 DEPCC=$dep_cc
6715 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6716 DEPAS=$as
6717 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6718 YASM=$yasmexe
6719 DEPYASM=$yasmexe
6720 AR=$ar
6721 ARFLAGS=$arflags
6722 AR_O=$ar_o
6723 RANLIB=$ranlib
6724 STRIP=$strip
6725 NVCC=$nvcc
6726 CP=cp -p
6727 LN_S=$ln_s
6728 CPPFLAGS=$CPPFLAGS
6729 CFLAGS=$CFLAGS
6730 CXXFLAGS=$CXXFLAGS
6731 OBJCFLAGS=$OBJCFLAGS
6732 ASFLAGS=$ASFLAGS
6733 NVCCFLAGS=$nvccflags
6734 AS_C=$AS_C
6735 AS_O=$AS_O
6736 OBJCC_C=$OBJCC_C
6737 OBJCC_E=$OBJCC_E
6738 OBJCC_O=$OBJCC_O
6739 CC_C=$CC_C
6740 CC_E=$CC_E
6741 CC_O=$CC_O
6742 CXX_C=$CXX_C
6743 CXX_O=$CXX_O
6744 NVCC_C=$NVCC_C
6745 NVCC_O=$NVCC_O
6746 LD_O=$LD_O
6747 LD_LIB=$LD_LIB
6748 LD_PATH=$LD_PATH
6749 DLLTOOL=$dlltool
6750 WINDRES=$windres
6751 DEPWINDRES=$dep_cc
6752 DOXYGEN=$doxygen
6753 LDFLAGS=$LDFLAGS
6754 LDEXEFLAGS=$LDEXEFLAGS
6755 LDLIBFLAGS=$LDLIBFLAGS
6756 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6757 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6758 YASMFLAGS=$YASMFLAGS
6759 BUILDSUF=$build_suffix
6760 PROGSSUF=$progs_suffix
6761 FULLNAME=$FULLNAME
6762 LIBPREF=$LIBPREF
6763 LIBSUF=$LIBSUF
6764 LIBNAME=$LIBNAME
6765 SLIBPREF=$SLIBPREF
6766 SLIBSUF=$SLIBSUF
6767 EXESUF=$EXESUF
6768 EXTRA_VERSION=$extra_version
6769 CCDEP=$CCDEP
6770 CXXDEP=$CXXDEP
6771 CCDEP_FLAGS=$CCDEP_FLAGS
6772 ASDEP=$ASDEP
6773 ASDEP_FLAGS=$ASDEP_FLAGS
6774 CC_DEPFLAGS=$CC_DEPFLAGS
6775 AS_DEPFLAGS=$AS_DEPFLAGS
6776 HOSTCC=$host_cc
6777 HOSTLD=$host_ld
6778 HOSTCFLAGS=$host_cflags
6779 HOSTCPPFLAGS=$host_cppflags
6780 HOSTEXESUF=$HOSTEXESUF
6781 HOSTLDFLAGS=$host_ldflags
6782 HOSTEXTRALIBS=$host_extralibs
6783 DEPHOSTCC=$host_cc
6784 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6785 HOSTCCDEP=$HOSTCCDEP
6786 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6787 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6788 HOSTCC_C=$HOSTCC_C
6789 HOSTCC_O=$HOSTCC_O
6790 HOSTLD_O=$HOSTLD_O
6791 TARGET_EXEC=$target_exec $target_exec_args
6792 TARGET_PATH=$target_path
6793 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6794 CFLAGS-ffplay=${sdl2_cflags}
6795 CFLAGS_HEADERS=$CFLAGS_HEADERS
6796 ZLIB=$($ldflags_filter -lz)
6797 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6798 EXTRALIBS=$extralibs
6799 COMPAT_OBJS=$compat_objs
6800 INSTALL=$install
6801 LIBTARGET=${LIBTARGET}
6802 SLIBNAME=${SLIBNAME}
6803 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6804 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6805 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6806 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6807 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6808 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6809 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6810 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6811 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6812 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6813 NOREDZONE_FLAGS=$noredzone_flags
6814 LIBFUZZER_PATH=$libfuzzer_path
6815 IGNORE_TESTS=$ignore_tests
6816 EOF
6817
6818 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6819
6820 print_program_extralibs(){
6821     eval "program_extralibs=\$${1}_extralibs"
6822     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6823 }
6824
6825 map 'print_program_extralibs $v' $PROGRAM_LIST
6826
6827 cat > $TMPH <<EOF
6828 /* Automatically generated by configure - do not modify! */
6829 #ifndef FFMPEG_CONFIG_H
6830 #define FFMPEG_CONFIG_H
6831 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6832 #define FFMPEG_LICENSE "$(c_escape $license)"
6833 #define CONFIG_THIS_YEAR 2017
6834 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6835 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6836 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6837 #define av_restrict $_restrict
6838 #define EXTERN_PREFIX "${extern_prefix}"
6839 #define EXTERN_ASM ${extern_prefix}
6840 #define BUILDSUF "$build_suffix"
6841 #define SLIBSUF "$SLIBSUF"
6842 #define HAVE_MMX2 HAVE_MMXEXT
6843 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6844 EOF
6845
6846 test -n "$assert_level" &&
6847     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6848
6849 test -n "$malloc_prefix" &&
6850     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6851
6852 if enabled yasm; then
6853     append config_files $TMPASM
6854     printf '' >$TMPASM
6855 fi
6856
6857 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6858
6859
6860 mkdir -p doc
6861 mkdir -p tests
6862 mkdir -p tests/api
6863 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6864
6865 print_config ARCH_   "$config_files" $ARCH_LIST
6866 print_config HAVE_   "$config_files" $HAVE_LIST
6867 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6868                                      $CONFIG_EXTRA      \
6869                                      $ALL_COMPONENTS    \
6870
6871 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6872 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6873
6874 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6875 cp_if_changed $TMPH config.h
6876 touch ffbuild/.config
6877
6878 enabled yasm && cp_if_changed $TMPASM config.asm
6879
6880 cat > $TMPH <<EOF
6881 /* Generated by ffconf */
6882 #ifndef AVUTIL_AVCONFIG_H
6883 #define AVUTIL_AVCONFIG_H
6884 EOF
6885
6886 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6887
6888 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6889
6890 cp_if_changed $TMPH libavutil/avconfig.h
6891
6892 # generate the lists of enabled components
6893 print_enabled_components(){
6894     file=$1
6895     struct_name=$2
6896     name=$3
6897     shift 3
6898     echo "static const $struct_name *$name[] = {" > $TMPH
6899     for c in $*; do
6900         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6901     done
6902     echo "    NULL };" >> $TMPH
6903     cp_if_changed $TMPH $file
6904 }
6905
6906 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6907 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6908
6909 if test -n "$WARNINGS"; then
6910     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6911     enabled fatal_warnings && exit 1
6912 fi
6913
6914 # Settings for pkg-config files
6915
6916 cat > ffbuild/config.sh <<EOF
6917 # Automatically generated by configure - do not modify!
6918 shared=$shared
6919 build_suffix=$build_suffix
6920 prefix=$prefix
6921 libdir=$libdir
6922 incdir=$incdir
6923 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6924 source_path=${source_path}
6925 LIBPREF=${LIBPREF}
6926 LIBSUF=${LIBSUF}
6927
6928 extralibs_avutil="$LIBRT $LIBM"
6929 extralibs_avcodec="$extralibs"
6930 extralibs_avformat="$extralibs"
6931 extralibs_avdevice="$extralibs"
6932 extralibs_avfilter="$extralibs"
6933 extralibs_avresample="$LIBM"
6934 extralibs_postproc=""
6935 extralibs_swscale="$LIBM"
6936 extralibs_swresample="$LIBM $LIBSOXR"
6937 EOF
6938
6939 for lib in $LIBRARY_LIST; do
6940     lib_deps="$(eval echo \$${lib}_deps)"
6941     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6942 done