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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 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 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --disable-audiotoolbox   enable AudioToolbox decoders and encoders [autodetect]
 198   --enable-avisynth        enable reading of AviSynth script files [no]
 199   --disable-bzlib          disable bzlib [autodetect]
 200   --enable-cuda            enable dynamically linked CUDA [no]
 201   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 202   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 203   --enable-frei0r          enable frei0r video filtering [no]
 204   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 205                            if openssl, librtmp or gmp is not used [no]
 206   --enable-gmp             enable gmp, needed for rtmp(t)e support
 207                            if openssl or librtmp is not used [no]
 208   --enable-gnutls          enable gnutls, needed for https support
 209                            if openssl is not used [no]
 210   --disable-iconv          disable iconv [autodetect]
 211   --enable-jni             enable JNI support [no]
 212   --enable-ladspa          enable LADSPA audio filtering [no]
 213   --enable-libass          enable libass subtitles rendering,
 214                            needed for subtitles and ass filter [no]
 215   --enable-libbluray       enable BluRay reading using libbluray [no]
 216   --enable-libbs2b         enable bs2b DSP library [no]
 217   --enable-libcaca         enable textual display using libcaca [no]
 218   --enable-libcelt         enable CELT decoding via libcelt [no]
 219   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 220   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 221                            and libraw1394 [no]
 222   --enable-libfaac         enable AAC encoding via libfaac [no]
 223   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 224   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 225   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 226   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 227   --enable-libgme          enable Game Music Emu via libgme [no]
 228   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 229   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 230   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 231   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 232   --enable-libmfx          enable HW acceleration through libmfx
 233   --enable-libmodplug      enable ModPlug via libmodplug [no]
 234   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 235   --enable-libnut          enable NUT (de)muxing via libnut,
 236                            native (de)muxer exists [no]
 237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 239   --enable-libopencv       enable video filtering via libopencv [no]
 240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 242   --enable-libopus         enable Opus de/encoding via libopus [no]
 243   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 244   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 250   --enable-libsoxr         enable Include libsoxr resampling [no]
 251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 252   --enable-libssh          enable SFTP protocol via libssh [no]
 253   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 254   --enable-libtheora       enable Theora encoding via libtheora [no]
 255   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 256   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 261                            native implementation exists [no]
 262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 264   --enable-libwebp         enable WebP encoding via libwebp [no]
 265   --enable-libx264         enable H.264 encoding via x264 [no]
 266   --enable-libx265         enable HEVC encoding via x265 [no]
 267   --enable-libxavs         enable AVS encoding via xavs [no]
 268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 272   --enable-libxvid         enable Xvid encoding via xvidcore,
 273                            native MPEG-4/Xvid encoder exists [no]
 274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 275   --enable-libzmq          enable message passing via libzmq [no]
 276   --enable-libzvbi         enable teletext support via libzvbi [no]
 277   --disable-lzma           disable lzma [autodetect]
 278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 279   --enable-mediacodec      enable Android MediaCodec support [no]
 280   --enable-mmal            enable decoding via MMAL [no]
 281   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 282   --enable-nvenc           enable NVIDIA NVENC support [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl            disable sdl [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 294   --enable-x11grab         enable X11 grabbing (legacy) [no]
 295   --disable-xlib           disable xlib [autodetect]
 296   --disable-zlib           disable zlib [autodetect]
 297
 298 Toolchain options:
 299   --arch=ARCH              select architecture [$arch]
 300   --cpu=CPU                select the minimum required CPU (affects
 301                            instruction selection, may crash on older CPUs)
 302   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 303   --progs-suffix=SUFFIX    program name suffix []
 304   --enable-cross-compile   assume a cross-compiler is used
 305   --sysroot=PATH           root of cross-build tree
 306   --sysinclude=PATH        location of cross-build system headers
 307   --target-os=OS           compiler targets OS [$target_os]
 308   --target-exec=CMD        command to run executables on target
 309   --target-path=DIR        path to view of build directory on target
 310   --target-samples=DIR     path to samples directory on target
 311   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 312   --toolchain=NAME         set tool defaults according to NAME
 313   --nm=NM                  use nm tool NM [$nm_default]
 314   --ar=AR                  use archive tool AR [$ar_default]
 315   --as=AS                  use assembler AS [$as_default]
 316   --strip=STRIP            use strip tool STRIP [$strip_default]
 317   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 318   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 319   --cc=CC                  use C compiler CC [$cc_default]
 320   --cxx=CXX                use C compiler CXX [$cxx_default]
 321   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 322   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 323   --ld=LD                  use linker LD [$ld_default]
 324   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 325   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 326   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 327   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 328   --host-cc=HOSTCC         use host C compiler HOSTCC
 329   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 330   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 331   --host-ld=HOSTLD         use host linker HOSTLD
 332   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 333   --host-libs=HLIBS        use libs HLIBS when linking for host
 334   --host-os=OS             compiler host OS [$target_os]
 335   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 336   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 337   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 338   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 339   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 340   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 341   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 342   --extra-version=STRING   version string suffix []
 343   --optflags=OPTFLAGS      override optimization-related compiler flags
 344   --build-suffix=SUFFIX    library name suffix []
 345   --enable-pic             build position-independent code
 346   --enable-thumb           compile for Thumb instruction set
 347   --enable-lto             use link-time optimization
 348   --env="ENV=override"     override the environment variables
 349
 350 Advanced options (experts only):
 351   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 352   --custom-allocator=NAME  use a supported custom allocator
 353   --disable-symver         disable symbol versioning
 354   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 355   --disable-safe-bitstream-reader
 356                            disable buffer boundary checking in bitreaders
 357                            (faster, but may crash)
 358   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 359   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 360
 361 Optimization options (experts only):
 362   --disable-asm            disable all assembly optimizations
 363   --disable-altivec        disable AltiVec optimizations
 364   --disable-vsx            disable VSX optimizations
 365   --disable-power8         disable POWER8 optimizations
 366   --disable-amd3dnow       disable 3DNow! optimizations
 367   --disable-amd3dnowext    disable 3DNow! extended optimizations
 368   --disable-mmx            disable MMX optimizations
 369   --disable-mmxext         disable MMXEXT optimizations
 370   --disable-sse            disable SSE optimizations
 371   --disable-sse2           disable SSE2 optimizations
 372   --disable-sse3           disable SSE3 optimizations
 373   --disable-ssse3          disable SSSE3 optimizations
 374   --disable-sse4           disable SSE4 optimizations
 375   --disable-sse42          disable SSE4.2 optimizations
 376   --disable-avx            disable AVX optimizations
 377   --disable-xop            disable XOP optimizations
 378   --disable-fma3           disable FMA3 optimizations
 379   --disable-fma4           disable FMA4 optimizations
 380   --disable-avx2           disable AVX2 optimizations
 381   --disable-aesni          disable AESNI optimizations
 382   --disable-armv5te        disable armv5te optimizations
 383   --disable-armv6          disable armv6 optimizations
 384   --disable-armv6t2        disable armv6t2 optimizations
 385   --disable-vfp            disable VFP optimizations
 386   --disable-neon           disable NEON optimizations
 387   --disable-inline-asm     disable use of inline assembly
 388   --disable-yasm           disable use of nasm/yasm assembly
 389   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 390   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 391   --disable-msa            disable MSA optimizations
 392   --disable-mipsfpu        disable floating point MIPS optimizations
 393   --disable-mmi            disable Loongson SIMD optimizations
 394   --disable-fast-unaligned consider unaligned accesses slow
 395
 396 Developer options (useful when working on FFmpeg itself):
 397   --disable-debug          disable debugging symbols
 398   --enable-debug=LEVEL     set the debug level [$debuglevel]
 399   --disable-optimizations  disable compiler optimizations
 400   --enable-extra-warnings  enable more compiler warnings
 401   --disable-stripping      disable stripping of executables and shared libraries
 402   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 403                            2 causes a slowdown at runtime.
 404   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 405   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 406                            leaks and errors, using the specified valgrind binary.
 407                            Cannot be combined with --target-exec
 408   --enable-ftrapv          Trap arithmetic overflows
 409   --samples=PATH           location of test samples for FATE, if not set use
 410                            \$FATE_SAMPLES at make invocation time.
 411   --enable-neon-clobber-test check NEON registers for clobbering (should be
 412                            used only for debugging purposes)
 413   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 414                            should be used only for debugging purposes)
 415   --enable-random          randomly enable/disable components
 416   --disable-random
 417   --enable-random=LIST     randomly enable/disable specific components or
 418   --disable-random=LIST    component groups. LIST is a comma-separated list
 419                            of NAME[:PROB] entries where NAME is a component
 420                            (group) and PROB the probability associated with
 421                            NAME (default 0.5).
 422   --random-seed=VALUE      seed value for --enable/disable-random
 423   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 424                            (only applies to --disable-optimizations builds)
 425
 426 NOTE: Object files are built at the place where configure is launched.
 427 EOF
 428   exit 0
 429 }
 430
 431 quotes='""'
 432 if test -t 1 && which tput >/dev/null 2>&1; then
 433     ncolors=$(tput colors)
 434     if test -n "$ncolors" && test $ncolors -ge 8; then
 435         bold_color=$(tput bold)
 436         warn_color=$(tput setaf 3)
 437         error_color=$(tput setaf 1)
 438         reset_color=$(tput sgr0)
 439     fi
 440     # 72 used instead of 80 since that's the default of pr
 441     ncols=$(tput cols)
 442 fi
 443 : ${ncols:=72}
 444
 445 log(){
 446     echo "$@" >> $logfile
 447 }
 448
 449 log_file(){
 450     log BEGIN $1
 451     pr -n -t $1 >> $logfile
 452     log END $1
 453 }
 454
 455 warn(){
 456     log "WARNING: $*"
 457     WARNINGS="${WARNINGS}WARNING: $*\n"
 458 }
 459
 460 die(){
 461     log "$@"
 462     echo "$error_color$bold_color$@$reset_color"
 463     cat <<EOF
 464
 465 If you think configure made a mistake, make sure you are using the latest
 466 version from Git.  If the latest version fails, report the problem to the
 467 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 468 EOF
 469     if disabled logging; then
 470         cat <<EOF
 471 Rerun configure with logging enabled (do not use --disable-logging), and
 472 include the log this produces with your report.
 473 EOF
 474     else
 475         cat <<EOF
 476 Include the log file "$logfile" produced by configure as this will help
 477 solve the problem.
 478 EOF
 479     fi
 480     exit 1
 481 }
 482
 483 # Avoid locale weirdness, besides we really just want to translate ASCII.
 484 toupper(){
 485     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 486 }
 487
 488 tolower(){
 489     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 490 }
 491
 492 c_escape(){
 493     echo "$*" | sed 's/["\\]/\\\0/g'
 494 }
 495
 496 sh_quote(){
 497     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 498     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 499     echo "$v"
 500 }
 501
 502 cleanws(){
 503     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 504 }
 505
 506 filter(){
 507     pat=$1
 508     shift
 509     for v; do
 510         eval "case $v in $pat) echo $v ;; esac"
 511     done
 512 }
 513
 514 filter_out(){
 515     pat=$1
 516     shift
 517     for v; do
 518         eval "case $v in $pat) ;; *) echo $v ;; esac"
 519     done
 520 }
 521
 522 map(){
 523     m=$1
 524     shift
 525     for v; do eval $m; done
 526 }
 527
 528 add_suffix(){
 529     suffix=$1
 530     shift
 531     for v; do echo ${v}${suffix}; done
 532 }
 533
 534 set_all(){
 535     value=$1
 536     shift
 537     for var in $*; do
 538         eval $var=$value
 539     done
 540 }
 541
 542 set_weak(){
 543     value=$1
 544     shift
 545     for var; do
 546         eval : \${$var:=$value}
 547     done
 548 }
 549
 550 sanitize_var_name(){
 551     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 552 }
 553
 554 set_safe(){
 555     var=$1
 556     shift
 557     eval $(sanitize_var_name "$var")='$*'
 558 }
 559
 560 get_safe(){
 561     eval echo \$$(sanitize_var_name "$1")
 562 }
 563
 564 pushvar(){
 565     for pvar in $*; do
 566         eval level=\${${pvar}_level:=0}
 567         eval ${pvar}_${level}="\$$pvar"
 568         eval ${pvar}_level=$(($level+1))
 569     done
 570 }
 571
 572 popvar(){
 573     for pvar in $*; do
 574         eval level=\${${pvar}_level:-0}
 575         test $level = 0 && continue
 576         eval level=$(($level-1))
 577         eval $pvar="\${${pvar}_${level}}"
 578         eval ${pvar}_level=$level
 579         eval unset ${pvar}_${level}
 580     done
 581 }
 582
 583 enable(){
 584     set_all yes $*
 585 }
 586
 587 disable(){
 588     set_all no $*
 589 }
 590
 591 enable_weak(){
 592     set_weak yes $*
 593 }
 594
 595 disable_weak(){
 596     set_weak no $*
 597 }
 598
 599 enable_safe(){
 600     for var; do
 601         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 602     done
 603 }
 604
 605 disable_safe(){
 606     for var; do
 607         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 608     done
 609 }
 610
 611 do_enable_deep(){
 612     for var; do
 613         enabled $var && continue
 614         eval sel="\$${var}_select"
 615         eval sgs="\$${var}_suggest"
 616         pushvar var sgs
 617         enable_deep $sel
 618         popvar sgs
 619         enable_deep_weak $sgs
 620         popvar var
 621     done
 622 }
 623
 624 enable_deep(){
 625     do_enable_deep $*
 626     enable $*
 627 }
 628
 629 enable_deep_weak(){
 630     for var; do
 631         disabled $var && continue
 632         pushvar var
 633         do_enable_deep $var
 634         popvar var
 635         enable_weak $var
 636     done
 637 }
 638
 639 enabled(){
 640     test "${1#!}" = "$1" && op='=' || op=!=
 641     eval test "x\$${1#!}" $op "xyes"
 642 }
 643
 644 disabled(){
 645     test "${1#!}" = "$1" && op='=' || op=!=
 646     eval test "x\$${1#!}" $op "xno"
 647 }
 648
 649 enabled_all(){
 650     for opt; do
 651         enabled $opt || return 1
 652     done
 653 }
 654
 655 disabled_all(){
 656     for opt; do
 657         disabled $opt || return 1
 658     done
 659 }
 660
 661 enabled_any(){
 662     for opt; do
 663         enabled $opt && return 0
 664     done
 665 }
 666
 667 disabled_any(){
 668     for opt; do
 669         disabled $opt && return 0
 670     done
 671     return 1
 672 }
 673
 674 set_default(){
 675     for opt; do
 676         eval : \${$opt:=\$${opt}_default}
 677     done
 678 }
 679
 680 is_in(){
 681     value=$1
 682     shift
 683     for var in $*; do
 684         [ $var = $value ] && return 0
 685     done
 686     return 1
 687 }
 688
 689 do_check_deps(){
 690     for cfg; do
 691         cfg="${cfg#!}"
 692         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 693         disabled ${cfg}_checking && continue
 694         enable ${cfg}_checking
 695         append allopts $cfg
 696
 697         eval dep_all="\$${cfg}_deps"
 698         eval dep_any="\$${cfg}_deps_any"
 699         eval dep_sel="\$${cfg}_select"
 700         eval dep_sgs="\$${cfg}_suggest"
 701         eval dep_ifa="\$${cfg}_if"
 702         eval dep_ifn="\$${cfg}_if_any"
 703
 704         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 705         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 706         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 707
 708         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 709         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 710         enabled_all  $dep_all || disable $cfg
 711         enabled_any  $dep_any || disable $cfg
 712         disabled_any $dep_sel && disable $cfg
 713
 714         if enabled $cfg; then
 715             enable_deep $dep_sel
 716             enable_deep_weak $dep_sgs
 717         fi
 718
 719         disable ${cfg}_checking
 720     done
 721 }
 722
 723 check_deps(){
 724     unset allopts
 725
 726     do_check_deps "$@"
 727
 728     for cfg in $allopts; do
 729         enabled $cfg || continue
 730         eval dep_extralibs="\$${cfg}_extralibs"
 731         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 732     done
 733 }
 734
 735 print_config(){
 736     pfx=$1
 737     files=$2
 738     shift 2
 739     map 'eval echo "$v \${$v:-no}"' "$@" |
 740     awk "BEGIN { split(\"$files\", files) }
 741         {
 742             c = \"$pfx\" toupper(\$1);
 743             v = \$2;
 744             sub(/yes/, 1, v);
 745             sub(/no/,  0, v);
 746             for (f in files) {
 747                 file = files[f];
 748                 if (file ~ /\\.h\$/) {
 749                     printf(\"#define %s %d\\n\", c, v) >>file;
 750                 } else if (file ~ /\\.asm\$/) {
 751                     printf(\"%%define %s %d\\n\", c, v) >>file;
 752                 } else if (file ~ /\\.mak\$/) {
 753                     n = -v ? \"\" : \"!\";
 754                     printf(\"%s%s=yes\\n\", n, c) >>file;
 755                 } else if (file ~ /\\.texi\$/) {
 756                     pre = -v ? \"\" : \"@c \";
 757                     yesno = \$2;
 758                     c2 = tolower(c);
 759                     gsub(/_/, \"-\", c2);
 760                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 761                 }
 762             }
 763         }"
 764 }
 765
 766 print_enabled(){
 767     suf=$1
 768     shift
 769     for v; do
 770         enabled $v && printf "%s\n" ${v%$suf};
 771     done
 772 }
 773
 774 append(){
 775     var=$1
 776     shift
 777     eval "$var=\"\$$var $*\""
 778 }
 779
 780 prepend(){
 781     var=$1
 782     shift
 783     eval "$var=\"$* \$$var\""
 784 }
 785
 786 unique(){
 787     var=$1
 788     uniq_list=""
 789     for tok in $(eval echo \$$var); do
 790         uniq_list="$(filter_out $tok $uniq_list) $tok"
 791     done
 792     eval "$var=\"${uniq_list}\""
 793 }
 794
 795 add_cppflags(){
 796     append CPPFLAGS "$@"
 797 }
 798
 799 add_cflags(){
 800     append CFLAGS $($cflags_filter "$@")
 801 }
 802
 803 add_cxxflags(){
 804     append CXXFLAGS $($cflags_filter "$@")
 805 }
 806
 807 add_asflags(){
 808     append ASFLAGS $($asflags_filter "$@")
 809 }
 810
 811 add_objcflags(){
 812     append OBJCFLAGS $($objcflags_filter "$@")
 813 }
 814
 815 add_ldflags(){
 816     append LDFLAGS $($ldflags_filter "$@")
 817 }
 818
 819 add_ldexeflags(){
 820     append LDEXEFLAGS $($ldflags_filter "$@")
 821 }
 822
 823 add_ldlibflags(){
 824     append LDLIBFLAGS $($ldflags_filter "$@")
 825 }
 826
 827 add_stripflags(){
 828     append ASMSTRIPFLAGS "$@"
 829 }
 830
 831 add_extralibs(){
 832     prepend extralibs $($ldflags_filter "$@")
 833 }
 834
 835 add_host_cppflags(){
 836     append host_cppflags "$@"
 837 }
 838
 839 add_host_cflags(){
 840     append host_cflags $($host_cflags_filter "$@")
 841 }
 842
 843 add_host_ldflags(){
 844     append host_ldflags $($host_ldflags_filter "$@")
 845 }
 846
 847 add_compat(){
 848     append compat_objs $1
 849     shift
 850     map 'add_cppflags -D$v' "$@"
 851 }
 852
 853 check_cmd(){
 854     log "$@"
 855     "$@" >> $logfile 2>&1
 856 }
 857
 858 check_stat(){
 859     log check_stat "$@"
 860     stat "$1" >> $logfile 2>&1
 861 }
 862
 863 cc_o(){
 864     eval printf '%s\\n' $CC_O
 865 }
 866
 867 cc_e(){
 868     eval printf '%s\\n' $CC_E
 869 }
 870
 871 check_cc(){
 872     log check_cc "$@"
 873     cat > $TMPC
 874     log_file $TMPC
 875     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 876 }
 877
 878 check_cxx(){
 879     log check_cxx "$@"
 880     cat > $TMPCPP
 881     log_file $TMPCPP
 882     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 883 }
 884
 885 check_objcc(){
 886     log check_objcc "$@"
 887     cat > $TMPM
 888     log_file $TMPM
 889     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 890 }
 891
 892 check_cpp(){
 893     log check_cpp "$@"
 894     cat > $TMPC
 895     log_file $TMPC
 896     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 897 }
 898
 899 as_o(){
 900     eval printf '%s\\n' $AS_O
 901 }
 902
 903 check_as(){
 904     log check_as "$@"
 905     cat > $TMPS
 906     log_file $TMPS
 907     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 908 }
 909
 910 check_inline_asm(){
 911     log check_inline_asm "$@"
 912     name="$1"
 913     code="$2"
 914     shift 2
 915     disable $name
 916     check_cc "$@" <<EOF && enable $name
 917 void foo(void){ __asm__ volatile($code); }
 918 EOF
 919 }
 920
 921 check_inline_asm_flags(){
 922     log check_inline_asm_flags "$@"
 923     name="$1"
 924     code="$2"
 925     flags=''
 926     shift 2
 927     while [ "$1" != "" ]; do
 928       append flags $1
 929       shift
 930     done;
 931     disable $name
 932     cat > $TMPC <<EOF
 933 void foo(void){ __asm__ volatile($code); }
 934 EOF
 935     log_file $TMPC
 936     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 937     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 938 }
 939
 940 check_insn(){
 941     log check_insn "$@"
 942     check_inline_asm ${1}_inline "\"$2\""
 943     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 944 }
 945
 946 check_yasm(){
 947     log check_yasm "$@"
 948     echo "$1" > $TMPS
 949     log_file $TMPS
 950     shift 1
 951     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 952 }
 953
 954 ld_o(){
 955     eval printf '%s\\n' $LD_O
 956 }
 957
 958 check_ld(){
 959     log check_ld "$@"
 960     type=$1
 961     shift 1
 962     flags=$(filter_out '-l*|*.so' $@)
 963     libs=$(filter '-l*|*.so' $@)
 964     check_$type $($cflags_filter $flags) || return
 965     flags=$($ldflags_filter $flags)
 966     libs=$($ldflags_filter $libs)
 967     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 968 }
 969
 970 print_include(){
 971     hdr=$1
 972     test "${hdr%.h}" = "${hdr}" &&
 973         echo "#include $hdr"    ||
 974         echo "#include <$hdr>"
 975 }
 976
 977 check_code(){
 978     log check_code "$@"
 979     check=$1
 980     headers=$2
 981     code=$3
 982     shift 3
 983     {
 984         for hdr in $headers; do
 985             print_include $hdr
 986         done
 987         echo "int main(void) { $code; return 0; }"
 988     } | check_$check "$@"
 989 }
 990
 991 check_cppflags(){
 992     log check_cppflags "$@"
 993     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 994 int x;
 995 EOF
 996 }
 997
 998 test_cflags(){
 999     log test_cflags "$@"
1000     set -- $($cflags_filter "$@")
1001     check_cc "$@" <<EOF
1002 int x;
1003 EOF
1004 }
1005
1006 check_cflags(){
1007     log check_cflags "$@"
1008     test_cflags "$@" && add_cflags "$@"
1009 }
1010
1011 check_cxxflags(){
1012     log check_cxxflags "$@"
1013     set -- $($cflags_filter "$@")
1014     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1015 int x;
1016 EOF
1017 }
1018
1019 test_objcflags(){
1020     log test_cflags "$@"
1021     set -- $($cflags_filter "$@")
1022     check_objcc "$@" <<EOF
1023 int x;
1024 EOF
1025 }
1026
1027 check_objcflags(){
1028     log check_cflags "$@"
1029     test_objcflags "$@" && add_objcflags "$@"
1030 }
1031
1032 test_ldflags(){
1033     log test_ldflags "$@"
1034     check_ld "cc" "$@" <<EOF
1035 int main(void){ return 0; }
1036 EOF
1037 }
1038
1039 check_ldflags(){
1040     log check_ldflags "$@"
1041     test_ldflags "$@" && add_ldflags "$@"
1042 }
1043
1044 test_stripflags(){
1045     log test_stripflags "$@"
1046     # call check_cc to get a fresh TMPO
1047     check_cc <<EOF
1048 int main(void) { return 0; }
1049 EOF
1050     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1051 }
1052
1053 check_stripflags(){
1054     log check_stripflags "$@"
1055     test_stripflags "$@" && add_stripflags "$@"
1056 }
1057
1058 check_header(){
1059     log check_header "$@"
1060     header=$1
1061     shift
1062     disable_safe $header
1063     check_cpp "$@" <<EOF && enable_safe $header
1064 #include <$header>
1065 int x;
1066 EOF
1067 }
1068
1069 check_header_objcc(){
1070     log check_header_objcc "$@"
1071     rm -f -- "$TMPO"
1072     header=$1
1073     shift
1074     disable_safe $header
1075     {
1076        echo "#include <$header>"
1077        echo "int main(void) { return 0; }"
1078     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1079 }
1080
1081 check_func(){
1082     log check_func "$@"
1083     func=$1
1084     shift
1085     disable $func
1086     check_ld "cc" "$@" <<EOF && enable $func
1087 extern int $func();
1088 int main(void){ $func(); }
1089 EOF
1090 }
1091
1092 check_complexfunc(){
1093     log check_complexfunc "$@"
1094     func=$1
1095     narg=$2
1096     shift 2
1097     test $narg = 2 && args="f, g" || args="f * I"
1098     disable $func
1099     check_ld "cc" "$@" <<EOF && enable $func
1100 #include <complex.h>
1101 #include <math.h>
1102 float foo(complex float f, complex float g) { return $func($args); }
1103 int main(void){ return (int) foo; }
1104 EOF
1105 }
1106
1107 check_mathfunc(){
1108     log check_mathfunc "$@"
1109     func=$1
1110     narg=$2
1111     shift 2
1112     test $narg = 2 && args="f, g" || args="f"
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 #include <math.h>
1116 float foo(float f, float g) { return $func($args); }
1117 int main(void){ return (int) foo; }
1118 EOF
1119 }
1120
1121 check_func_headers(){
1122     log check_func_headers "$@"
1123     headers=$1
1124     funcs=$2
1125     shift 2
1126     {
1127         for hdr in $headers; do
1128             print_include $hdr
1129         done
1130         for func in $funcs; do
1131             echo "long check_$func(void) { return (long) $func; }"
1132         done
1133         echo "int main(void) { return 0; }"
1134     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1135 }
1136
1137 check_class_headers_cpp(){
1138     log check_class_headers_cpp "$@"
1139     headers=$1
1140     classes=$2
1141     shift 2
1142     {
1143         for hdr in $headers; do
1144             echo "#include <$hdr>"
1145         done
1146         echo "int main(void) { "
1147         i=1
1148         for class in $classes; do
1149             echo "$class obj$i;"
1150             i=$(expr $i + 1)
1151         done
1152         echo "return 0; }"
1153     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1154 }
1155
1156 check_cpp_condition(){
1157     log check_cpp_condition "$@"
1158     header=$1
1159     condition=$2
1160     shift 2
1161     check_cpp "$@" <<EOF
1162 #include <$header>
1163 #if !($condition)
1164 #error "unsatisfied condition: $condition"
1165 #endif
1166 EOF
1167 }
1168
1169 check_lib(){
1170     log check_lib "$@"
1171     header="$1"
1172     func="$2"
1173     shift 2
1174     check_header $header && check_func $func "$@" && add_extralibs "$@"
1175 }
1176
1177 check_lib2(){
1178     log check_lib2 "$@"
1179     headers="$1"
1180     funcs="$2"
1181     shift 2
1182     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1183 }
1184
1185 check_lib_cpp(){
1186     log check_lib_cpp "$@"
1187     headers="$1"
1188     classes="$2"
1189     shift 2
1190     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1191 }
1192
1193 check_pkg_config(){
1194     log check_pkg_config "$@"
1195     pkgandversion="$1"
1196     pkg="${1%% *}"
1197     headers="$2"
1198     funcs="$3"
1199     shift 3
1200     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1201     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1202     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1203     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1204         set_safe "${pkg}_cflags" $pkg_cflags   &&
1205         set_safe "${pkg}_libs"   $pkg_libs
1206 }
1207
1208 check_exec(){
1209     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1210 }
1211
1212 check_exec_crash(){
1213     code=$(cat)
1214
1215     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1216     # are safe but may not be available everywhere.  Thus we use
1217     # raise(SIGTERM) instead.  The check is run in a subshell so we
1218     # can redirect the "Terminated" message from the shell.  SIGBUS
1219     # is not defined by standard C so it is used conditionally.
1220
1221     (check_exec "$@") >> $logfile 2>&1 <<EOF
1222 #include <signal.h>
1223 static void sighandler(int sig){
1224     raise(SIGTERM);
1225 }
1226 int foo(void){
1227     $code
1228 }
1229 int (*func_ptr)(void) = foo;
1230 int main(void){
1231     signal(SIGILL, sighandler);
1232     signal(SIGFPE, sighandler);
1233     signal(SIGSEGV, sighandler);
1234 #ifdef SIGBUS
1235     signal(SIGBUS, sighandler);
1236 #endif
1237     return func_ptr();
1238 }
1239 EOF
1240 }
1241
1242 check_type(){
1243     log check_type "$@"
1244     headers=$1
1245     type=$2
1246     shift 2
1247     disable_safe "$type"
1248     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1249 }
1250
1251 check_struct(){
1252     log check_struct "$@"
1253     headers=$1
1254     struct=$2
1255     member=$3
1256     shift 3
1257     disable_safe "${struct}_${member}"
1258     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1259         enable_safe "${struct}_${member}"
1260 }
1261
1262 check_builtin(){
1263     log check_builtin "$@"
1264     name=$1
1265     headers=$2
1266     builtin=$3
1267     shift 3
1268     disable "$name"
1269     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1270 }
1271
1272 check_compile_assert(){
1273     log check_compile_assert "$@"
1274     name=$1
1275     headers=$2
1276     condition=$3
1277     shift 3
1278     disable "$name"
1279     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1280 }
1281
1282 require(){
1283     name="$1"
1284     header="$2"
1285     func="$3"
1286     shift 3
1287     check_lib $header $func "$@" || die "ERROR: $name not found"
1288 }
1289
1290 require2(){
1291     name="$1"
1292     headers="$2"
1293     func="$3"
1294     shift 3
1295     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1296 }
1297
1298 require_cpp(){
1299     name="$1"
1300     headers="$2"
1301     classes="$3"
1302     shift 3
1303     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1304 }
1305
1306 use_pkg_config(){
1307     pkg="$1"
1308     check_pkg_config "$@" || return 1
1309     add_cflags    $(get_safe "${pkg}_cflags")
1310     add_extralibs $(get_safe "${pkg}_libs")
1311 }
1312
1313 require_pkg_config(){
1314     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1315 }
1316
1317 require_libfreetype(){
1318     log require_libfreetype "$@"
1319     pkg="freetype2"
1320     check_cmd $pkg_config --exists --print-errors $pkg \
1321       || die "ERROR: $pkg not found"
1322     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1323     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1324     {
1325         echo "#include <ft2build.h>"
1326         echo "#include FT_FREETYPE_H"
1327         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1328         echo "int main(void) { return 0; }"
1329     } | check_ld "cc" $pkg_cflags $pkg_libs \
1330       && set_safe "${pkg}_cflags" $pkg_cflags \
1331       && set_safe "${pkg}_libs"   $pkg_libs \
1332       || die "ERROR: $pkg not found"
1333     add_cflags    $(get_safe "${pkg}_cflags")
1334     add_extralibs $(get_safe "${pkg}_libs")
1335 }
1336
1337 hostcc_e(){
1338     eval printf '%s\\n' $HOSTCC_E
1339 }
1340
1341 hostcc_o(){
1342     eval printf '%s\\n' $HOSTCC_O
1343 }
1344
1345 check_host_cc(){
1346     log check_host_cc "$@"
1347     cat > $TMPC
1348     log_file $TMPC
1349     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1350 }
1351
1352 check_host_cpp(){
1353     log check_host_cpp "$@"
1354     cat > $TMPC
1355     log_file $TMPC
1356     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1357 }
1358
1359 check_host_cppflags(){
1360     log check_host_cppflags "$@"
1361     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1362 int x;
1363 EOF
1364 }
1365
1366 check_host_cflags(){
1367     log check_host_cflags "$@"
1368     set -- $($host_cflags_filter "$@")
1369     check_host_cc "$@" <<EOF && append host_cflags "$@"
1370 int x;
1371 EOF
1372 }
1373
1374 check_host_cpp_condition(){
1375     log check_host_cpp_condition "$@"
1376     header=$1
1377     condition=$2
1378     shift 2
1379     check_host_cpp "$@" <<EOF
1380 #include <$header>
1381 #if !($condition)
1382 #error "unsatisfied condition: $condition"
1383 #endif
1384 EOF
1385 }
1386
1387 cp_if_changed(){
1388     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1389     mkdir -p "$(dirname $2)"
1390     $cp_f "$1" "$2"
1391 }
1392
1393 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1394 # system-dependent things.
1395
1396 AVCODEC_COMPONENTS="
1397     bsfs
1398     decoders
1399     encoders
1400     hwaccels
1401     parsers
1402 "
1403
1404 AVDEVICE_COMPONENTS="
1405     indevs
1406     outdevs
1407 "
1408 AVFILTER_COMPONENTS="
1409     filters
1410 "
1411 AVFORMAT_COMPONENTS="
1412     demuxers
1413     muxers
1414     protocols
1415 "
1416
1417 AVRESAMPLE_COMPONENTS=""
1418 AVUTIL_COMPONENTS=""
1419
1420 COMPONENT_LIST="
1421     $AVCODEC_COMPONENTS
1422     $AVDEVICE_COMPONENTS
1423     $AVFILTER_COMPONENTS
1424     $AVFORMAT_COMPONENTS
1425     $AVRESAMPLE_COMPONENTS
1426     $AVUTIL_COMPONENTS
1427 "
1428
1429 EXAMPLE_LIST="
1430     avio_reading_example
1431     avio_dir_cmd_example
1432     decoding_encoding_example
1433     demuxing_decoding_example
1434     extract_mvs_example
1435     filter_audio_example
1436     filtering_audio_example
1437     filtering_video_example
1438     metadata_example
1439     muxing_example
1440     qsvdec_example
1441     remuxing_example
1442     resampling_audio_example
1443     scaling_video_example
1444     transcode_aac_example
1445     transcoding_example
1446 "
1447
1448 EXTERNAL_LIBRARY_LIST="
1449     audiotoolbox
1450     avisynth
1451     bzlib
1452     chromaprint
1453     crystalhd
1454     cuda
1455     decklink
1456     frei0r
1457     gcrypt
1458     gmp
1459     gnutls
1460     iconv
1461     jni
1462     ladspa
1463     libass
1464     libbluray
1465     libbs2b
1466     libcaca
1467     libcdio
1468     libcelt
1469     libdc1394
1470     libfaac
1471     libfdk_aac
1472     libflite
1473     libfontconfig
1474     libfreetype
1475     libfribidi
1476     libgme
1477     libgsm
1478     libiec61883
1479     libilbc
1480     libkvazaar
1481     libmfx
1482     libmodplug
1483     libmp3lame
1484     libnut
1485     libopencore_amrnb
1486     libopencore_amrwb
1487     libopencv
1488     libopenh264
1489     libopenjpeg
1490     libopus
1491     libpulse
1492     librtmp
1493     librubberband
1494     libschroedinger
1495     libshine
1496     libsmbclient
1497     libsnappy
1498     libsoxr
1499     libspeex
1500     libssh
1501     libtesseract
1502     libtheora
1503     libtwolame
1504     libutvideo
1505     libv4l2
1506     libvidstab
1507     libvo_amrwbenc
1508     libvorbis
1509     libvpx
1510     libwavpack
1511     libwebp
1512     libx264
1513     libx265
1514     libxavs
1515     libxcb
1516     libxcb_shm
1517     libxcb_shape
1518     libxcb_xfixes
1519     libxvid
1520     libzimg
1521     libzmq
1522     libzvbi
1523     lzma
1524     mediacodec
1525     mmal
1526     netcdf
1527     nvenc
1528     openal
1529     opencl
1530     opengl
1531     openssl
1532     schannel
1533     sdl
1534     securetransport
1535     videotoolbox
1536     x11grab
1537     xlib
1538     zlib
1539 "
1540
1541 DOCUMENT_LIST="
1542     doc
1543     htmlpages
1544     manpages
1545     podpages
1546     txtpages
1547 "
1548
1549 FEATURE_LIST="
1550     ftrapv
1551     gray
1552     hardcoded_tables
1553     runtime_cpudetect
1554     safe_bitstream_reader
1555     shared
1556     small
1557     static
1558     swscale_alpha
1559 "
1560
1561 HWACCEL_LIST="
1562     d3d11va
1563     dxva2
1564     vaapi
1565     vda
1566     vdpau
1567     videotoolbox_hwaccel
1568     xvmc
1569 "
1570
1571 LIBRARY_LIST="
1572     avcodec
1573     avdevice
1574     avfilter
1575     avformat
1576     avresample
1577     avutil
1578     postproc
1579     swresample
1580     swscale
1581 "
1582
1583 LICENSE_LIST="
1584     gpl
1585     nonfree
1586     version3
1587 "
1588
1589 PROGRAM_LIST="
1590     ffplay
1591     ffprobe
1592     ffserver
1593     ffmpeg
1594 "
1595
1596 SUBSYSTEM_LIST="
1597     dct
1598     dwt
1599     error_resilience
1600     faan
1601     fast_unaligned
1602     fft
1603     lsp
1604     lzo
1605     mdct
1606     pixelutils
1607     network
1608     rdft
1609 "
1610
1611 CONFIG_LIST="
1612     $COMPONENT_LIST
1613     $DOCUMENT_LIST
1614     $EXAMPLE_LIST
1615     $EXTERNAL_LIBRARY_LIST
1616     $FEATURE_LIST
1617     $HWACCEL_LIST
1618     $LICENSE_LIST
1619     $LIBRARY_LIST
1620     $PROGRAM_LIST
1621     $SUBSYSTEM_LIST
1622     fontconfig
1623     incompatible_libav_abi
1624     memalign_hack
1625     memory_poisoning
1626     neon_clobber_test
1627     pic
1628     pod2man
1629     raise_major
1630     thumb
1631     valgrind_backtrace
1632     xmm_clobber_test
1633 "
1634
1635 THREADS_LIST="
1636     pthreads
1637     os2threads
1638     w32threads
1639 "
1640
1641 ATOMICS_LIST="
1642     atomics_gcc
1643     atomics_suncc
1644     atomics_win32
1645 "
1646
1647 ARCH_LIST="
1648     aarch64
1649     alpha
1650     arm
1651     avr32
1652     avr32_ap
1653     avr32_uc
1654     bfin
1655     ia64
1656     m68k
1657     mips
1658     mips64
1659     parisc
1660     ppc
1661     ppc64
1662     s390
1663     sh4
1664     sparc
1665     sparc64
1666     tilegx
1667     tilepro
1668     tomi
1669     x86
1670     x86_32
1671     x86_64
1672 "
1673
1674 ARCH_EXT_LIST_ARM="
1675     armv5te
1676     armv6
1677     armv6t2
1678     armv8
1679     neon
1680     vfp
1681     vfpv3
1682     setend
1683 "
1684
1685 ARCH_EXT_LIST_MIPS="
1686     mipsfpu
1687     mips32r2
1688     mips32r5
1689     mips64r2
1690     mips32r6
1691     mips64r6
1692     mipsdsp
1693     mipsdspr2
1694     msa
1695 "
1696
1697 ARCH_EXT_LIST_LOONGSON="
1698     loongson2
1699     loongson3
1700     mmi
1701 "
1702
1703 ARCH_EXT_LIST_X86_SIMD="
1704     aesni
1705     amd3dnow
1706     amd3dnowext
1707     avx
1708     avx2
1709     fma3
1710     fma4
1711     mmx
1712     mmxext
1713     sse
1714     sse2
1715     sse3
1716     sse4
1717     sse42
1718     ssse3
1719     xop
1720 "
1721
1722 ARCH_EXT_LIST_PPC="
1723     altivec
1724     dcbzl
1725     ldbrx
1726     power8
1727     ppc4xx
1728     vsx
1729 "
1730
1731 ARCH_EXT_LIST_X86="
1732     $ARCH_EXT_LIST_X86_SIMD
1733     cpunop
1734     i686
1735 "
1736
1737 ARCH_EXT_LIST="
1738     $ARCH_EXT_LIST_ARM
1739     $ARCH_EXT_LIST_PPC
1740     $ARCH_EXT_LIST_X86
1741     $ARCH_EXT_LIST_MIPS
1742     $ARCH_EXT_LIST_LOONGSON
1743 "
1744
1745 ARCH_FEATURES="
1746     aligned_stack
1747     fast_64bit
1748     fast_clz
1749     fast_cmov
1750     local_aligned_8
1751     local_aligned_16
1752     local_aligned_32
1753     simd_align_16
1754 "
1755
1756 BUILTIN_LIST="
1757     atomic_cas_ptr
1758     atomic_compare_exchange
1759     machine_rw_barrier
1760     MemoryBarrier
1761     mm_empty
1762     rdtsc
1763     sarestart
1764     sem_timedwait
1765     sync_val_compare_and_swap
1766 "
1767 HAVE_LIST_CMDLINE="
1768     inline_asm
1769     symver
1770     yasm
1771 "
1772
1773 HAVE_LIST_PUB="
1774     bigendian
1775     fast_unaligned
1776     incompatible_libav_abi
1777 "
1778
1779 HEADERS_LIST="
1780     alsa_asoundlib_h
1781     altivec_h
1782     arpa_inet_h
1783     asm_types_h
1784     cdio_paranoia_h
1785     cdio_paranoia_paranoia_h
1786     dispatch_dispatch_h
1787     dev_bktr_ioctl_bt848_h
1788     dev_bktr_ioctl_meteor_h
1789     dev_ic_bt8xx_h
1790     dev_video_bktr_ioctl_bt848_h
1791     dev_video_meteor_ioctl_meteor_h
1792     direct_h
1793     dirent_h
1794     dlfcn_h
1795     d3d11_h
1796     dxva_h
1797     ES2_gl_h
1798     gsm_h
1799     io_h
1800     mach_mach_time_h
1801     machine_ioctl_bt848_h
1802     machine_ioctl_meteor_h
1803     malloc_h
1804     opencv2_core_core_c_h
1805     openjpeg_2_1_openjpeg_h
1806     openjpeg_2_0_openjpeg_h
1807     openjpeg_1_5_openjpeg_h
1808     OpenGL_gl3_h
1809     poll_h
1810     sndio_h
1811     soundcard_h
1812     sys_mman_h
1813     sys_param_h
1814     sys_resource_h
1815     sys_select_h
1816     sys_soundcard_h
1817     sys_time_h
1818     sys_un_h
1819     sys_videoio_h
1820     termios_h
1821     udplite_h
1822     unistd_h
1823     valgrind_valgrind_h
1824     windows_h
1825     winsock2_h
1826 "
1827
1828 INTRINSICS_LIST="
1829     intrinsics_neon
1830 "
1831
1832 COMPLEX_FUNCS="
1833     cabs
1834     cexp
1835 "
1836
1837 MATH_FUNCS="
1838     atanf
1839     atan2f
1840     cbrt
1841     cbrtf
1842     copysign
1843     cosf
1844     erf
1845     exp2
1846     exp2f
1847     expf
1848     hypot
1849     isfinite
1850     isinf
1851     isnan
1852     ldexpf
1853     llrint
1854     llrintf
1855     log2
1856     log2f
1857     log10f
1858     lrint
1859     lrintf
1860     powf
1861     rint
1862     round
1863     roundf
1864     sinf
1865     trunc
1866     truncf
1867 "
1868
1869 SYSTEM_FUNCS="
1870     access
1871     aligned_malloc
1872     arc4random
1873     clock_gettime
1874     closesocket
1875     CommandLineToArgvW
1876     CoTaskMemFree
1877     CryptGenRandom
1878     dlopen
1879     fcntl
1880     flt_lim
1881     fork
1882     getaddrinfo
1883     gethrtime
1884     getopt
1885     GetProcessAffinityMask
1886     GetProcessMemoryInfo
1887     GetProcessTimes
1888     getrusage
1889     GetSystemTimeAsFileTime
1890     gettimeofday
1891     glob
1892     glXGetProcAddress
1893     gmtime_r
1894     inet_aton
1895     isatty
1896     jack_port_get_latency_range
1897     kbhit
1898     localtime_r
1899     lstat
1900     lzo1x_999_compress
1901     mach_absolute_time
1902     MapViewOfFile
1903     memalign
1904     mkstemp
1905     mmap
1906     mprotect
1907     nanosleep
1908     PeekNamedPipe
1909     posix_memalign
1910     pthread_cancel
1911     sched_getaffinity
1912     SetConsoleTextAttribute
1913     SetConsoleCtrlHandler
1914     setmode
1915     setrlimit
1916     Sleep
1917     strerror_r
1918     sysconf
1919     sysctl
1920     usleep
1921     UTGetOSTypeFromString
1922     VirtualAlloc
1923     wglGetProcAddress
1924 "
1925
1926 TOOLCHAIN_FEATURES="
1927     as_dn_directive
1928     as_func
1929     as_object_arch
1930     asm_mod_q
1931     attribute_may_alias
1932     attribute_packed
1933     ebp_available
1934     ebx_available
1935     gnu_as
1936     gnu_windres
1937     ibm_asm
1938     inline_asm_direct_symbol_refs
1939     inline_asm_labels
1940     inline_asm_nonlocal_labels
1941     pragma_deprecated
1942     rsync_contimeout
1943     symver_asm_label
1944     symver_gnu_asm
1945     vfp_args
1946     xform_asm
1947     xmm_clobbers
1948 "
1949
1950 TYPES_LIST="
1951     CONDITION_VARIABLE_Ptr
1952     socklen_t
1953     struct_addrinfo
1954     struct_group_source_req
1955     struct_ip_mreq_source
1956     struct_ipv6_mreq
1957     struct_msghdr_msg_flags
1958     struct_pollfd
1959     struct_rusage_ru_maxrss
1960     struct_sctp_event_subscribe
1961     struct_sockaddr_in6
1962     struct_sockaddr_sa_len
1963     struct_sockaddr_storage
1964     struct_stat_st_mtim_tv_nsec
1965     struct_v4l2_frmivalenum_discrete
1966 "
1967
1968 HAVE_LIST="
1969     $ARCH_EXT_LIST
1970     $(add_suffix _external $ARCH_EXT_LIST)
1971     $(add_suffix _inline   $ARCH_EXT_LIST)
1972     $ARCH_FEATURES
1973     $ATOMICS_LIST
1974     $BUILTIN_LIST
1975     $COMPLEX_FUNCS
1976     $HAVE_LIST_CMDLINE
1977     $HAVE_LIST_PUB
1978     $HEADERS_LIST
1979     $INTRINSICS_LIST
1980     $MATH_FUNCS
1981     $SYSTEM_FUNCS
1982     $THREADS_LIST
1983     $TOOLCHAIN_FEATURES
1984     $TYPES_LIST
1985     atomics_native
1986     dos_paths
1987     dxva2_lib
1988     dxva2api_cobj
1989     libc_msvcrt
1990     libdc1394_1
1991     libdc1394_2
1992     makeinfo
1993     makeinfo_html
1994     perl
1995     pod2man
1996     sdl
1997     section_data_rel_ro
1998     texi2html
1999     threads
2000     vaapi_x11
2001     vdpau_x11
2002     winrt
2003     xlib
2004 "
2005
2006 # options emitted with CONFIG_ prefix but not available on the command line
2007 CONFIG_EXTRA="
2008     aandcttables
2009     ac3dsp
2010     audio_frame_queue
2011     audiodsp
2012     blockdsp
2013     bswapdsp
2014     cabac
2015     dirac_parse
2016     dvprofile
2017     exif
2018     faandct
2019     faanidct
2020     fdctdsp
2021     flacdsp
2022     fmtconvert
2023     frame_thread_encoder
2024     g722dsp
2025     golomb
2026     gplv3
2027     h263dsp
2028     h264chroma
2029     h264dsp
2030     h264pred
2031     h264qpel
2032     hpeldsp
2033     huffman
2034     huffyuvdsp
2035     huffyuvencdsp
2036     idctdsp
2037     iirfilter
2038     imdct15
2039     intrax8
2040     iso_media
2041     ividsp
2042     jpegtables
2043     lgplv3
2044     libx262
2045     llauddsp
2046     llviddsp
2047     lpc
2048     lzf
2049     me_cmp
2050     mpeg_er
2051     mpegaudio
2052     mpegaudiodsp
2053     mpegvideo
2054     mpegvideoenc
2055     mss34dsp
2056     pixblockdsp
2057     qpeldsp
2058     qsv
2059     qsvdec
2060     qsvenc
2061     rangecoder
2062     riffdec
2063     riffenc
2064     rtpdec
2065     rtpenc_chain
2066     rv34dsp
2067     sinewin
2068     snappy
2069     startcode
2070     texturedsp
2071     texturedspenc
2072     tpeldsp
2073     vc1dsp
2074     videodsp
2075     vp3dsp
2076     vp56dsp
2077     vp8dsp
2078     wma_freqs
2079     wmv2dsp
2080 "
2081
2082 CMDLINE_SELECT="
2083     $ARCH_EXT_LIST
2084     $CONFIG_LIST
2085     $HAVE_LIST_CMDLINE
2086     $THREADS_LIST
2087     asm
2088     cross_compile
2089     debug
2090     extra_warnings
2091     logging
2092     lto
2093     optimizations
2094     rpath
2095     stripping
2096 "
2097
2098 PATHS_LIST="
2099     bindir
2100     datadir
2101     docdir
2102     incdir
2103     libdir
2104     mandir
2105     pkgconfigdir
2106     prefix
2107     shlibdir
2108     install_name_dir
2109 "
2110
2111 CMDLINE_SET="
2112     $PATHS_LIST
2113     ar
2114     arch
2115     as
2116     assert_level
2117     build_suffix
2118     cc
2119     objcc
2120     cpu
2121     cross_prefix
2122     custom_allocator
2123     cxx
2124     dep_cc
2125     doxygen
2126     env
2127     extra_version
2128     gas
2129     host_cc
2130     host_cflags
2131     host_ld
2132     host_ldflags
2133     host_libs
2134     host_os
2135     install
2136     ld
2137     logfile
2138     malloc_prefix
2139     nm
2140     optflags
2141     pkg_config
2142     pkg_config_flags
2143     progs_suffix
2144     random_seed
2145     ranlib
2146     samples
2147     strip
2148     sws_max_filter_size
2149     sysinclude
2150     sysroot
2151     target_exec
2152     target_os
2153     target_path
2154     target_samples
2155     tempprefix
2156     toolchain
2157     valgrind
2158     yasmexe
2159 "
2160
2161 CMDLINE_APPEND="
2162     extra_cflags
2163     extra_cxxflags
2164     extra_objcflags
2165     host_cppflags
2166 "
2167
2168 # code dependency declarations
2169
2170 # architecture extensions
2171
2172 armv5te_deps="arm"
2173 armv6_deps="arm"
2174 armv6t2_deps="arm"
2175 armv8_deps="aarch64"
2176 neon_deps_any="aarch64 arm"
2177 intrinsics_neon_deps="neon"
2178 vfp_deps_any="aarch64 arm"
2179 vfpv3_deps="vfp"
2180 setend_deps="arm"
2181
2182 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2183
2184 mipsfpu_deps="mips"
2185 mipsdsp_deps="mips"
2186 mipsdspr2_deps="mips"
2187 mips32r2_deps="mips"
2188 mips32r5_deps="mips"
2189 mips32r6_deps="mips"
2190 mips64r2_deps="mips"
2191 mips64r6_deps="mips"
2192 msa_deps="mipsfpu"
2193 mmi_deps="mips"
2194
2195 altivec_deps="ppc"
2196 dcbzl_deps="ppc"
2197 ldbrx_deps="ppc"
2198 ppc4xx_deps="ppc"
2199 vsx_deps="altivec"
2200 power8_deps="vsx"
2201
2202 cpunop_deps="i686"
2203 x86_64_select="i686"
2204 x86_64_suggest="fast_cmov"
2205
2206 amd3dnow_deps="mmx"
2207 amd3dnowext_deps="amd3dnow"
2208 i686_deps="x86"
2209 mmx_deps="x86"
2210 mmxext_deps="mmx"
2211 sse_deps="mmxext"
2212 sse2_deps="sse"
2213 sse3_deps="sse2"
2214 ssse3_deps="sse3"
2215 sse4_deps="ssse3"
2216 sse42_deps="sse4"
2217 aesni_deps="sse42"
2218 avx_deps="sse42"
2219 xop_deps="avx"
2220 fma3_deps="avx"
2221 fma4_deps="avx"
2222 avx2_deps="avx"
2223
2224 mmx_external_deps="yasm"
2225 mmx_inline_deps="inline_asm"
2226 mmx_suggest="mmx_external mmx_inline"
2227
2228 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2229     eval dep=\$${ext}_deps
2230     eval ${ext}_external_deps='"${dep}_external"'
2231     eval ${ext}_inline_deps='"${dep}_inline"'
2232     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2233 done
2234
2235 aligned_stack_if_any="aarch64 ppc x86"
2236 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2237 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2238 fast_unaligned_if_any="aarch64 ppc x86"
2239 simd_align_16_if_any="altivec neon sse"
2240
2241 # system capabilities
2242 symver_if_any="symver_asm_label symver_gnu_asm"
2243 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2244
2245 # threading support
2246 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2247 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2248 atomics_win32_if="MemoryBarrier"
2249 atomics_native_if_any="$ATOMICS_LIST"
2250 w32threads_deps="atomics_native"
2251 threads_if_any="$THREADS_LIST"
2252
2253 # subsystems
2254 dct_select="rdft"
2255 dirac_parse_select="golomb"
2256 error_resilience_select="me_cmp"
2257 faandct_deps="faan fdctdsp"
2258 faanidct_deps="faan idctdsp"
2259 h264dsp_select="startcode"
2260 frame_thread_encoder_deps="encoders threads"
2261 intrax8_select="error_resilience"
2262 mdct_select="fft"
2263 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2264 mpeg_er_select="error_resilience"
2265 mpegaudio_select="mpegaudiodsp"
2266 mpegaudiodsp_select="dct"
2267 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2268 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2269 qsvdec_select="qsv"
2270 qsvenc_select="qsv"
2271 vc1dsp_select="h264chroma qpeldsp startcode"
2272 rdft_select="fft"
2273
2274 # decoders / encoders
2275 aac_decoder_select="imdct15 mdct sinewin"
2276 aac_fixed_decoder_select="mdct sinewin"
2277 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2278 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2279 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2280 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2281 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2282 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2283 adpcm_g722_decoder_select="g722dsp"
2284 adpcm_g722_encoder_select="g722dsp"
2285 aic_decoder_select="golomb idctdsp"
2286 alac_encoder_select="lpc"
2287 als_decoder_select="bswapdsp"
2288 amrnb_decoder_select="lsp"
2289 amrwb_decoder_select="lsp"
2290 amv_decoder_select="sp5x_decoder exif"
2291 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2292 ape_decoder_select="bswapdsp llauddsp"
2293 apng_decoder_select="zlib"
2294 apng_encoder_select="huffyuvencdsp zlib"
2295 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2296 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2297 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2298 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2299 atrac1_decoder_select="mdct sinewin"
2300 atrac3_decoder_select="mdct"
2301 atrac3p_decoder_select="mdct sinewin"
2302 avrn_decoder_select="exif jpegtables"
2303 bink_decoder_select="blockdsp hpeldsp"
2304 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2305 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2306 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2307 cllc_decoder_select="bswapdsp"
2308 comfortnoise_encoder_select="lpc"
2309 cook_decoder_select="audiodsp mdct sinewin"
2310 cscd_decoder_select="lzo"
2311 cscd_decoder_suggest="zlib"
2312 dca_decoder_select="mdct"
2313 dds_decoder_select="texturedsp"
2314 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2315 dnxhd_decoder_select="blockdsp idctdsp"
2316 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2317 dvvideo_decoder_select="dvprofile idctdsp"
2318 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2319 dxa_decoder_select="zlib"
2320 dxv_decoder_select="lzf texturedsp"
2321 eac3_decoder_select="ac3_decoder"
2322 eac3_encoder_select="ac3_encoder"
2323 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2324 eatgq_decoder_select="aandcttables"
2325 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2326 exr_decoder_select="zlib"
2327 ffv1_decoder_select="golomb rangecoder"
2328 ffv1_encoder_select="rangecoder"
2329 ffvhuff_decoder_select="huffyuv_decoder"
2330 ffvhuff_encoder_select="huffyuv_encoder"
2331 fic_decoder_select="golomb"
2332 flac_decoder_select="flacdsp golomb"
2333 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2334 flashsv2_decoder_select="zlib"
2335 flashsv2_encoder_select="zlib"
2336 flashsv_decoder_select="zlib"
2337 flashsv_encoder_select="zlib"
2338 flv_decoder_select="h263_decoder"
2339 flv_encoder_select="h263_encoder"
2340 fourxm_decoder_select="blockdsp bswapdsp"
2341 fraps_decoder_select="bswapdsp huffman"
2342 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2343 g729_decoder_select="audiodsp"
2344 h261_decoder_select="mpegvideo"
2345 h261_encoder_select="aandcttables mpegvideoenc"
2346 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2347 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2348 h263i_decoder_select="h263_decoder"
2349 h263p_decoder_select="h263_decoder"
2350 h263p_encoder_select="h263_encoder"
2351 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2352 h264_decoder_suggest="error_resilience"
2353 h264_qsv_decoder_deps="libmfx"
2354 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2355 h264_qsv_encoder_deps="libmfx"
2356 h264_qsv_encoder_select="qsvenc"
2357 hap_decoder_select="snappy texturedsp"
2358 hap_encoder_deps="libsnappy"
2359 hap_encoder_select="texturedspenc"
2360 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2361 hevc_qsv_decoder_deps="libmfx"
2362 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2363 hevc_qsv_encoder_deps="libmfx"
2364 hevc_qsv_encoder_select="qsvenc"
2365 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2366 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2367 iac_decoder_select="imc_decoder"
2368 imc_decoder_select="bswapdsp fft mdct sinewin"
2369 indeo3_decoder_select="hpeldsp"
2370 indeo4_decoder_select="ividsp"
2371 indeo5_decoder_select="ividsp"
2372 interplay_video_decoder_select="hpeldsp"
2373 jpegls_decoder_select="golomb mjpeg_decoder"
2374 jpegls_encoder_select="golomb"
2375 jv_decoder_select="blockdsp"
2376 lagarith_decoder_select="huffyuvdsp"
2377 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2378 loco_decoder_select="golomb"
2379 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2380 metasound_decoder_select="lsp mdct sinewin"
2381 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2382 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2383 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2384 mjpegb_decoder_select="mjpeg_decoder"
2385 mlp_decoder_select="mlp_parser"
2386 motionpixels_decoder_select="bswapdsp"
2387 mp1_decoder_select="mpegaudio"
2388 mp1float_decoder_select="mpegaudio"
2389 mp2_decoder_select="mpegaudio"
2390 mp2float_decoder_select="mpegaudio"
2391 mp3_decoder_select="mpegaudio"
2392 mp3adu_decoder_select="mpegaudio"
2393 mp3adufloat_decoder_select="mpegaudio"
2394 mp3float_decoder_select="mpegaudio"
2395 mp3on4_decoder_select="mpegaudio"
2396 mp3on4float_decoder_select="mpegaudio"
2397 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2398 mpc8_decoder_select="mpegaudiodsp"
2399 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2400 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2401 mpegvideo_decoder_select="mpegvideo"
2402 mpeg1video_decoder_select="mpegvideo"
2403 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2404 mpeg2video_decoder_select="mpegvideo"
2405 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2406 mpeg2_qsv_decoder_deps="libmfx"
2407 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2408 mpeg2_qsv_encoder_deps="libmfx"
2409 mpeg2_qsv_encoder_select="qsvenc"
2410 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2411 mpeg4_encoder_select="h263_encoder"
2412 msa1_decoder_select="mss34dsp"
2413 msmpeg4v1_decoder_select="h263_decoder"
2414 msmpeg4v2_decoder_select="h263_decoder"
2415 msmpeg4v2_encoder_select="h263_encoder"
2416 msmpeg4v3_decoder_select="h263_decoder"
2417 msmpeg4v3_encoder_select="h263_encoder"
2418 mss2_decoder_select="vc1_decoder mpegvideo"
2419 mts2_decoder_select="mss34dsp"
2420 mxpeg_decoder_select="mjpeg_decoder"
2421 nellymoser_decoder_select="mdct sinewin"
2422 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2423 nuv_decoder_select="idctdsp lzo"
2424 on2avc_decoder_select="mdct"
2425 opus_decoder_deps="swresample"
2426 opus_decoder_select="imdct15"
2427 png_decoder_select="zlib"
2428 png_encoder_select="huffyuvencdsp zlib"
2429 prores_decoder_select="blockdsp idctdsp"
2430 prores_encoder_select="fdctdsp"
2431 qcelp_decoder_select="lsp"
2432 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2433 ra_144_decoder_select="audiodsp"
2434 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2435 ralf_decoder_select="golomb"
2436 rawvideo_decoder_select="bswapdsp"
2437 rscc_decoder_select="zlib"
2438 rtjpeg_decoder_select="me_cmp"
2439 rv10_decoder_select="h263_decoder"
2440 rv10_encoder_select="h263_encoder"
2441 rv20_decoder_select="h263_decoder"
2442 rv20_encoder_select="h263_encoder"
2443 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2444 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2445 screenpresso_decoder_select="zlib"
2446 shorten_decoder_select="golomb"
2447 sipr_decoder_select="lsp"
2448 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2449 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2450 sonic_decoder_select="golomb rangecoder"
2451 sonic_encoder_select="golomb rangecoder"
2452 sonic_ls_encoder_select="golomb rangecoder"
2453 sp5x_decoder_select="mjpeg_decoder"
2454 svq1_decoder_select="hpeldsp"
2455 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2456 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2457 svq3_decoder_suggest="zlib"
2458 tak_decoder_select="audiodsp"
2459 tdsc_decoder_select="zlib mjpeg_decoder"
2460 theora_decoder_select="vp3_decoder"
2461 thp_decoder_select="mjpeg_decoder"
2462 tiff_decoder_suggest="zlib lzma"
2463 tiff_encoder_suggest="zlib"
2464 truehd_decoder_select="mlp_parser"
2465 truemotion2_decoder_select="bswapdsp"
2466 truespeech_decoder_select="bswapdsp"
2467 tscc_decoder_select="zlib"
2468 twinvq_decoder_select="mdct lsp sinewin"
2469 txd_decoder_select="texturedsp"
2470 utvideo_decoder_select="bswapdsp"
2471 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2472 vble_decoder_select="huffyuvdsp"
2473 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2474 vc1_qsv_decoder_deps="libmfx"
2475 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2476 vc1image_decoder_select="vc1_decoder"
2477 vorbis_decoder_select="mdct"
2478 vorbis_encoder_select="mdct"
2479 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2480 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2481 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2482 vp6a_decoder_select="vp6_decoder"
2483 vp6f_decoder_select="vp6_decoder"
2484 vp7_decoder_select="h264pred videodsp vp8dsp"
2485 vp8_decoder_select="h264pred videodsp vp8dsp"
2486 vp9_decoder_select="videodsp vp9_parser"
2487 webp_decoder_select="vp8_decoder exif"
2488 wmalossless_decoder_select="llauddsp"
2489 wmapro_decoder_select="mdct sinewin wma_freqs"
2490 wmav1_decoder_select="mdct sinewin wma_freqs"
2491 wmav1_encoder_select="mdct sinewin wma_freqs"
2492 wmav2_decoder_select="mdct sinewin wma_freqs"
2493 wmav2_encoder_select="mdct sinewin wma_freqs"
2494 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2495 wmv1_decoder_select="h263_decoder"
2496 wmv1_encoder_select="h263_encoder"
2497 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2498 wmv2_encoder_select="h263_encoder wmv2dsp"
2499 wmv3_decoder_select="vc1_decoder"
2500 wmv3image_decoder_select="wmv3_decoder"
2501 xma1_decoder_select="wmapro_decoder"
2502 xma2_decoder_select="wmapro_decoder"
2503 zerocodec_decoder_select="zlib"
2504 zlib_decoder_select="zlib"
2505 zlib_encoder_select="zlib"
2506 zmbv_decoder_select="zlib"
2507 zmbv_encoder_select="zlib"
2508
2509 # platform codecs
2510 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2511 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2512
2513 # hardware accelerators
2514 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2515 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2516 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2517 vaapi_deps="va_va_h"
2518 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2519 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2520 vda_deps="vda_framework pthreads"
2521 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2522 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2523 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2524 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2525 xvmc_deps="X11_extensions_XvMClib_h"
2526
2527 h263_vaapi_hwaccel_deps="vaapi"
2528 h263_vaapi_hwaccel_select="h263_decoder"
2529 h263_videotoolbox_hwaccel_deps="videotoolbox"
2530 h263_videotoolbox_hwaccel_select="h263_decoder"
2531 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2532 h264_d3d11va_hwaccel_deps="d3d11va"
2533 h264_d3d11va_hwaccel_select="h264_decoder"
2534 h264_dxva2_hwaccel_deps="dxva2"
2535 h264_dxva2_hwaccel_select="h264_decoder"
2536 h264_mediacodec_decoder_deps="mediacodec"
2537 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2538 h264_mmal_decoder_deps="mmal"
2539 h264_mmal_decoder_select="mmal"
2540 h264_mmal_hwaccel_deps="mmal"
2541 h264_qsv_hwaccel_deps="libmfx"
2542 h264_vaapi_hwaccel_deps="vaapi"
2543 h264_vaapi_hwaccel_select="h264_decoder"
2544 h264_vda_decoder_deps="vda"
2545 h264_vda_decoder_select="h264_decoder"
2546 h264_vda_hwaccel_deps="vda"
2547 h264_vda_hwaccel_select="h264_decoder"
2548 h264_vda_old_hwaccel_deps="vda"
2549 h264_vda_old_hwaccel_select="h264_decoder"
2550 h264_vdpau_decoder_deps="vdpau"
2551 h264_vdpau_decoder_select="h264_decoder"
2552 h264_vdpau_hwaccel_deps="vdpau"
2553 h264_vdpau_hwaccel_select="h264_decoder"
2554 h264_videotoolbox_hwaccel_deps="videotoolbox"
2555 h264_videotoolbox_hwaccel_select="h264_decoder"
2556 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2557 hevc_d3d11va_hwaccel_select="hevc_decoder"
2558 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2559 hevc_dxva2_hwaccel_select="hevc_decoder"
2560 hevc_qsv_hwaccel_deps="libmfx"
2561 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2562 hevc_vaapi_hwaccel_select="hevc_decoder"
2563 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2564 hevc_vdpau_hwaccel_select="hevc_decoder"
2565 mpeg_vdpau_decoder_deps="vdpau"
2566 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2567 mpeg_xvmc_hwaccel_deps="xvmc"
2568 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2569 mpeg1_vdpau_decoder_deps="vdpau"
2570 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2571 mpeg1_vdpau_hwaccel_deps="vdpau"
2572 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2573 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2574 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2575 mpeg1_xvmc_hwaccel_deps="xvmc"
2576 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2577 mpeg2_crystalhd_decoder_select="crystalhd"
2578 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2579 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2580 mpeg2_dxva2_hwaccel_deps="dxva2"
2581 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2582 mpeg2_mmal_decoder_deps="mmal"
2583 mpeg2_mmal_decoder_select="mmal"
2584 mpeg2_mmal_hwaccel_deps="mmal"
2585 mpeg2_qsv_hwaccel_deps="libmfx"
2586 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2587 mpeg2_vaapi_hwaccel_deps="vaapi"
2588 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2589 mpeg2_vdpau_hwaccel_deps="vdpau"
2590 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2591 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2592 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2593 mpeg2_xvmc_hwaccel_deps="xvmc"
2594 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2595 mpeg4_crystalhd_decoder_select="crystalhd"
2596 mpeg4_mmal_decoder_deps="mmal"
2597 mpeg4_mmal_decoder_select="mmal"
2598 mpeg4_mmal_hwaccel_deps="mmal"
2599 mpeg4_vaapi_hwaccel_deps="vaapi"
2600 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2601 mpeg4_vdpau_decoder_deps="vdpau"
2602 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2603 mpeg4_vdpau_hwaccel_deps="vdpau"
2604 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2605 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2606 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2607 msmpeg4_crystalhd_decoder_select="crystalhd"
2608 vc1_crystalhd_decoder_select="crystalhd"
2609 vc1_d3d11va_hwaccel_deps="d3d11va"
2610 vc1_d3d11va_hwaccel_select="vc1_decoder"
2611 vc1_dxva2_hwaccel_deps="dxva2"
2612 vc1_dxva2_hwaccel_select="vc1_decoder"
2613 vc1_mmal_decoder_deps="mmal"
2614 vc1_mmal_decoder_select="mmal"
2615 vc1_mmal_hwaccel_deps="mmal"
2616 vc1_qsv_hwaccel_deps="libmfx"
2617 vc1_qsv_hwaccel_select="qsvdec_vc1"
2618 vc1_vaapi_hwaccel_deps="vaapi"
2619 vc1_vaapi_hwaccel_select="vc1_decoder"
2620 vc1_vdpau_decoder_deps="vdpau"
2621 vc1_vdpau_decoder_select="vc1_decoder"
2622 vc1_vdpau_hwaccel_deps="vdpau"
2623 vc1_vdpau_hwaccel_select="vc1_decoder"
2624 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2625 vp9_d3d11va_hwaccel_select="vp9_decoder"
2626 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2627 vp9_dxva2_hwaccel_select="vp9_decoder"
2628 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2629 vp9_vaapi_hwaccel_select="vp9_decoder"
2630 wmv3_crystalhd_decoder_select="crystalhd"
2631 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2632 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2633 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2634 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2635 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2636
2637 # parsers
2638 h264_parser_select="h264_decoder"
2639 hevc_parser_select="golomb"
2640 mpegvideo_parser_select="mpegvideo"
2641 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2642 vc1_parser_select="vc1dsp"
2643
2644 # bitstream_filters
2645 mjpeg2jpeg_bsf_select="jpegtables"
2646
2647 # external libraries
2648 aac_at_decoder_deps="audiotoolbox"
2649 ac3_at_decoder_deps="audiotoolbox"
2650 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2651 alac_at_decoder_deps="audiotoolbox"
2652 amr_nb_at_decoder_deps="audiotoolbox"
2653 eac3_at_decoder_deps="audiotoolbox"
2654 gsm_ms_at_decoder_deps="audiotoolbox"
2655 ilbc_at_decoder_deps="audiotoolbox"
2656 mp1_at_decoder_deps="audiotoolbox"
2657 mp2_at_decoder_deps="audiotoolbox"
2658 mp3_at_decoder_deps="audiotoolbox"
2659 pcm_alaw_at_decoder_deps="audiotoolbox"
2660 pcm_mulaw_at_decoder_deps="audiotoolbox"
2661 qdmc_at_decoder_deps="audiotoolbox"
2662 qdm2_at_decoder_deps="audiotoolbox"
2663 aac_at_encoder_deps="audiotoolbox"
2664 aac_at_encoder_select="audio_frame_queue"
2665 alac_at_encoder_deps="audiotoolbox"
2666 alac_at_encoder_select="audio_frame_queue"
2667 ilbc_at_encoder_deps="audiotoolbox"
2668 ilbc_at_encoder_select="audio_frame_queue"
2669 pcm_alaw_at_encoder_deps="audiotoolbox"
2670 pcm_alaw_at_encoder_select="audio_frame_queue"
2671 pcm_mulaw_at_encoder_deps="audiotoolbox"
2672 pcm_mulaw_at_encoder_select="audio_frame_queue"
2673 chromaprint_muxer_deps="chromaprint"
2674 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2675 libcelt_decoder_deps="libcelt"
2676 libfaac_encoder_deps="libfaac"
2677 libfaac_encoder_select="audio_frame_queue"
2678 libfdk_aac_decoder_deps="libfdk_aac"
2679 libfdk_aac_encoder_deps="libfdk_aac"
2680 libfdk_aac_encoder_select="audio_frame_queue"
2681 libgme_demuxer_deps="libgme"
2682 libgsm_decoder_deps="libgsm"
2683 libgsm_encoder_deps="libgsm"
2684 libgsm_ms_decoder_deps="libgsm"
2685 libgsm_ms_encoder_deps="libgsm"
2686 libilbc_decoder_deps="libilbc"
2687 libilbc_encoder_deps="libilbc"
2688 libkvazaar_encoder_deps="libkvazaar"
2689 libmodplug_demuxer_deps="libmodplug"
2690 libmp3lame_encoder_deps="libmp3lame"
2691 libmp3lame_encoder_select="audio_frame_queue"
2692 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2693 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2694 libopencore_amrnb_encoder_select="audio_frame_queue"
2695 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2696 libopenh264_encoder_deps="libopenh264"
2697 libopenjpeg_decoder_deps="libopenjpeg"
2698 libopenjpeg_encoder_deps="libopenjpeg"
2699 libopus_decoder_deps="libopus"
2700 libopus_encoder_deps="libopus"
2701 libopus_encoder_select="audio_frame_queue"
2702 libschroedinger_decoder_deps="libschroedinger"
2703 libschroedinger_encoder_deps="libschroedinger"
2704 libshine_encoder_deps="libshine"
2705 libshine_encoder_select="audio_frame_queue"
2706 libspeex_decoder_deps="libspeex"
2707 libspeex_encoder_deps="libspeex"
2708 libspeex_encoder_select="audio_frame_queue"
2709 libtheora_encoder_deps="libtheora"
2710 libtwolame_encoder_deps="libtwolame"
2711 libutvideo_decoder_deps="libutvideo"
2712 libutvideo_encoder_deps="libutvideo"
2713 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2714 libvorbis_decoder_deps="libvorbis"
2715 libvorbis_encoder_deps="libvorbis"
2716 libvorbis_encoder_select="audio_frame_queue"
2717 libvpx_vp8_decoder_deps="libvpx"
2718 libvpx_vp8_encoder_deps="libvpx"
2719 libvpx_vp9_decoder_deps="libvpx"
2720 libvpx_vp9_encoder_deps="libvpx"
2721 libwavpack_encoder_deps="libwavpack"
2722 libwebp_encoder_deps="libwebp"
2723 libwebp_anim_encoder_deps="libwebp"
2724 libx262_encoder_deps="libx262"
2725 libx264_encoder_deps="libx264"
2726 libx264rgb_encoder_deps="libx264"
2727 libx264rgb_encoder_select="libx264_encoder"
2728 libx265_encoder_deps="libx265"
2729 libxavs_encoder_deps="libxavs"
2730 libxvid_encoder_deps="libxvid"
2731 libzvbi_teletext_decoder_deps="libzvbi"
2732 nvenc_encoder_deps="nvenc"
2733 nvenc_h264_encoder_deps="nvenc"
2734 nvenc_hevc_encoder_deps="nvenc"
2735 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2736 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2737 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2738 videotoolbox_encoder_suggest="vda_framework"
2739
2740 # demuxers / muxers
2741 ac3_demuxer_select="ac3_parser"
2742 asf_demuxer_select="riffdec"
2743 asf_o_demuxer_select="riffdec"
2744 asf_muxer_select="riffenc"
2745 asf_stream_muxer_select="asf_muxer"
2746 avi_demuxer_select="iso_media riffdec exif"
2747 avi_muxer_select="riffenc"
2748 avisynth_demuxer_deps="avisynth"
2749 avisynth_demuxer_select="riffdec"
2750 caf_demuxer_select="iso_media riffdec"
2751 dash_muxer_select="mp4_muxer"
2752 dirac_demuxer_select="dirac_parser"
2753 dts_demuxer_select="dca_parser"
2754 dtshd_demuxer_select="dca_parser"
2755 dv_demuxer_select="dvprofile"
2756 dv_muxer_select="dvprofile"
2757 dxa_demuxer_select="riffdec"
2758 eac3_demuxer_select="ac3_parser"
2759 f4v_muxer_select="mov_muxer"
2760 flac_demuxer_select="flac_parser"
2761 hds_muxer_select="flv_muxer"
2762 hls_muxer_select="mpegts_muxer"
2763 image2_alias_pix_demuxer_select="image2_demuxer"
2764 image2_brender_pix_demuxer_select="image2_demuxer"
2765 ipod_muxer_select="mov_muxer"
2766 ismv_muxer_select="mov_muxer"
2767 libnut_demuxer_deps="libnut"
2768 libnut_muxer_deps="libnut"
2769 matroska_audio_muxer_select="matroska_muxer"
2770 matroska_demuxer_select="iso_media riffdec"
2771 matroska_demuxer_suggest="bzlib lzo zlib"
2772 matroska_muxer_select="iso_media riffenc"
2773 mmf_muxer_select="riffenc"
2774 mov_demuxer_select="iso_media riffdec"
2775 mov_demuxer_suggest="zlib"
2776 mov_muxer_select="iso_media riffenc rtpenc_chain"
2777 mp3_demuxer_select="mpegaudio_parser"
2778 mp4_muxer_select="mov_muxer"
2779 mpegts_demuxer_select="iso_media"
2780 mpegts_muxer_select="adts_muxer latm_muxer"
2781 mpegtsraw_demuxer_select="mpegts_demuxer"
2782 mxf_d10_muxer_select="mxf_muxer"
2783 mxf_opatom_muxer_select="mxf_muxer"
2784 nut_muxer_select="riffenc"
2785 nuv_demuxer_select="riffdec"
2786 oga_muxer_select="ogg_muxer"
2787 ogg_demuxer_select="dirac_parse"
2788 opus_muxer_select="ogg_muxer"
2789 psp_muxer_select="mov_muxer"
2790 rtp_demuxer_select="sdp_demuxer"
2791 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2792 rtsp_demuxer_select="http_protocol rtpdec"
2793 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2794 sap_demuxer_select="sdp_demuxer"
2795 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2796 sdp_demuxer_select="rtpdec"
2797 smoothstreaming_muxer_select="ismv_muxer"
2798 spdif_muxer_select="aac_parser"
2799 spx_muxer_select="ogg_muxer"
2800 swf_demuxer_suggest="zlib"
2801 tak_demuxer_select="tak_parser"
2802 tg2_muxer_select="mov_muxer"
2803 tgp_muxer_select="mov_muxer"
2804 vobsub_demuxer_select="mpegps_demuxer"
2805 w64_demuxer_select="wav_demuxer"
2806 w64_muxer_select="wav_muxer"
2807 wav_demuxer_select="riffdec"
2808 wav_muxer_select="riffenc"
2809 webm_muxer_select="iso_media riffenc"
2810 webm_dash_manifest_demuxer_select="matroska_demuxer"
2811 wtv_demuxer_select="mpegts_demuxer riffdec"
2812 wtv_muxer_select="mpegts_muxer riffenc"
2813 xmv_demuxer_select="riffdec"
2814 xwma_demuxer_select="riffdec"
2815
2816 # indevs / outdevs
2817 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2818 alsa_outdev_deps="alsa_asoundlib_h"
2819 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2820 avfoundation_indev_select="avfoundation"
2821 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2822 caca_outdev_deps="libcaca"
2823 decklink_indev_deps="decklink pthreads"
2824 decklink_indev_extralibs="-lstdc++"
2825 decklink_outdev_deps="decklink pthreads"
2826 decklink_outdev_extralibs="-lstdc++"
2827 dshow_indev_deps="IBaseFilter"
2828 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2829 dv1394_indev_deps="dv1394"
2830 dv1394_indev_select="dv_demuxer"
2831 fbdev_indev_deps="linux_fb_h"
2832 fbdev_outdev_deps="linux_fb_h"
2833 gdigrab_indev_deps="CreateDIBSection"
2834 gdigrab_indev_extralibs="-lgdi32"
2835 gdigrab_indev_select="bmp_decoder"
2836 iec61883_indev_deps="libiec61883"
2837 jack_indev_deps="jack_jack_h"
2838 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2839 lavfi_indev_deps="avfilter"
2840 libcdio_indev_deps="libcdio"
2841 libdc1394_indev_deps="libdc1394"
2842 libv4l2_indev_deps="libv4l2"
2843 openal_indev_deps="openal"
2844 opengl_outdev_deps="opengl"
2845 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2846 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2847 pulse_indev_deps="libpulse"
2848 pulse_outdev_deps="libpulse"
2849 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2850 qtkit_indev_select="qtkit"
2851 sdl_outdev_deps="sdl"
2852 sndio_indev_deps="sndio_h"
2853 sndio_outdev_deps="sndio_h"
2854 v4l_indev_deps="linux_videodev_h"
2855 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2856 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2857 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2858 vfwcap_indev_extralibs="-lavicap32"
2859 x11grab_indev_deps="x11grab"
2860 x11grab_xcb_indev_deps="libxcb"
2861 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2862 xv_outdev_extralibs="-lXv -lX11 -lXext"
2863
2864 # protocols
2865 async_protocol_deps="threads"
2866 bluray_protocol_deps="libbluray"
2867 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2868 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2869 ffrtmpcrypt_protocol_select="tcp_protocol"
2870 ffrtmphttp_protocol_deps="!librtmp_protocol"
2871 ffrtmphttp_protocol_select="http_protocol"
2872 ftp_protocol_select="tcp_protocol"
2873 gopher_protocol_select="network"
2874 http_protocol_select="tcp_protocol"
2875 httpproxy_protocol_select="tcp_protocol"
2876 https_protocol_select="tls_protocol"
2877 icecast_protocol_select="http_protocol"
2878 librtmp_protocol_deps="librtmp"
2879 librtmpe_protocol_deps="librtmp"
2880 librtmps_protocol_deps="librtmp"
2881 librtmpt_protocol_deps="librtmp"
2882 librtmpte_protocol_deps="librtmp"
2883 libsmbclient_protocol_deps="libsmbclient gplv3"
2884 libssh_protocol_deps="libssh"
2885 mmsh_protocol_select="http_protocol"
2886 mmst_protocol_select="network"
2887 rtmp_protocol_deps="!librtmp_protocol"
2888 rtmp_protocol_select="tcp_protocol"
2889 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2890 rtmps_protocol_deps="!librtmp_protocol"
2891 rtmps_protocol_select="tls_protocol"
2892 rtmpt_protocol_select="ffrtmphttp_protocol"
2893 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2894 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2895 rtp_protocol_select="udp_protocol"
2896 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2897 sctp_protocol_select="network"
2898 srtp_protocol_select="rtp_protocol"
2899 tcp_protocol_select="network"
2900 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2901 tls_gnutls_protocol_select="tcp_protocol"
2902 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2903 tls_openssl_protocol_select="tcp_protocol"
2904 tls_schannel_protocol_deps="schannel"
2905 tls_schannel_protocol_select="tcp_protocol"
2906 tls_securetransport_protocol_deps="securetransport"
2907 tls_securetransport_protocol_select="tcp_protocol"
2908 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2909 udp_protocol_select="network"
2910 udplite_protocol_select="network"
2911 unix_protocol_deps="sys_un_h"
2912 unix_protocol_select="network"
2913
2914 # filters
2915 afftfilt_filter_deps="avcodec"
2916 afftfilt_filter_select="fft"
2917 amovie_filter_deps="avcodec avformat"
2918 aresample_filter_deps="swresample"
2919 ass_filter_deps="libass"
2920 asyncts_filter_deps="avresample"
2921 atempo_filter_deps="avcodec"
2922 atempo_filter_select="rdft"
2923 azmq_filter_deps="libzmq"
2924 blackframe_filter_deps="gpl"
2925 boxblur_filter_deps="gpl"
2926 bs2b_filter_deps="libbs2b"
2927 colormatrix_filter_deps="gpl"
2928 cover_rect_filter_deps="avcodec avformat gpl"
2929 cropdetect_filter_deps="gpl"
2930 delogo_filter_deps="gpl"
2931 deshake_filter_select="pixelutils"
2932 drawtext_filter_deps="libfreetype"
2933 ebur128_filter_deps="gpl"
2934 eq_filter_deps="gpl"
2935 fftfilt_filter_deps="avcodec"
2936 fftfilt_filter_select="rdft"
2937 find_rect_filter_deps="avcodec avformat gpl"
2938 firequalizer_filter_deps="avcodec"
2939 firequalizer_filter_select="rdft"
2940 flite_filter_deps="libflite"
2941 frei0r_filter_deps="frei0r dlopen"
2942 frei0r_src_filter_deps="frei0r dlopen"
2943 fspp_filter_deps="gpl"
2944 geq_filter_deps="gpl"
2945 histeq_filter_deps="gpl"
2946 hqdn3d_filter_deps="gpl"
2947 hwupload_cuda_filter_deps="cuda"
2948 interlace_filter_deps="gpl"
2949 kerndeint_filter_deps="gpl"
2950 ladspa_filter_deps="ladspa dlopen"
2951 mcdeint_filter_deps="avcodec gpl"
2952 movie_filter_deps="avcodec avformat"
2953 mpdecimate_filter_deps="gpl"
2954 mpdecimate_filter_select="pixelutils"
2955 mptestsrc_filter_deps="gpl"
2956 negate_filter_deps="lut_filter"
2957 nnedi_filter_deps="gpl"
2958 ocr_filter_deps="libtesseract"
2959 ocv_filter_deps="libopencv"
2960 owdenoise_filter_deps="gpl"
2961 pan_filter_deps="swresample"
2962 perspective_filter_deps="gpl"
2963 phase_filter_deps="gpl"
2964 pp7_filter_deps="gpl"
2965 pp_filter_deps="gpl postproc"
2966 pullup_filter_deps="gpl"
2967 removelogo_filter_deps="avcodec avformat swscale"
2968 repeatfields_filter_deps="gpl"
2969 resample_filter_deps="avresample"
2970 rubberband_filter_deps="librubberband"
2971 sab_filter_deps="gpl swscale"
2972 scale2ref_filter_deps="swscale"
2973 scale_filter_deps="swscale"
2974 select_filter_select="pixelutils"
2975 showcqt_filter_deps="avcodec avformat swscale"
2976 showcqt_filter_select="fft"
2977 showfreqs_filter_deps="avcodec"
2978 showfreqs_filter_select="fft"
2979 showspectrum_filter_deps="avcodec"
2980 showspectrum_filter_select="fft"
2981 showspectrumpic_filter_deps="avcodec"
2982 showspectrumpic_filter_select="fft"
2983 smartblur_filter_deps="gpl swscale"
2984 sofalizer_filter_deps="netcdf avcodec"
2985 sofalizer_filter_select="fft"
2986 spectrumsynth_filter_deps="avcodec"
2987 spectrumsynth_filter_select="fft"
2988 spp_filter_deps="gpl avcodec"
2989 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2990 stereo3d_filter_deps="gpl"
2991 subtitles_filter_deps="avformat avcodec libass"
2992 super2xsai_filter_deps="gpl"
2993 pixfmts_super2xsai_test_deps="super2xsai_filter"
2994 tinterlace_filter_deps="gpl"
2995 tinterlace_merge_test_deps="tinterlace_filter"
2996 tinterlace_pad_test_deps="tinterlace_filter"
2997 uspp_filter_deps="gpl avcodec"
2998 vidstabdetect_filter_deps="libvidstab"
2999 vidstabtransform_filter_deps="libvidstab"
3000 zmq_filter_deps="libzmq"
3001 zoompan_filter_deps="swscale"
3002 zscale_filter_deps="libzimg"
3003
3004 # examples
3005 avcodec_example_deps="avcodec avutil"
3006 avio_dir_cmd="avformat avutil"
3007 avio_reading="avformat avcodec avutil"
3008 decoding_encoding_example_deps="avcodec avformat avutil"
3009 demuxing_decoding_example_deps="avcodec avformat avutil"
3010 extract_mvs_example_deps="avcodec avformat avutil"
3011 filter_audio_example_deps="avfilter avutil"
3012 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3013 filtering_video_example_deps="avfilter avcodec avformat avutil"
3014 metadata_example_deps="avformat avutil"
3015 muxing_example_deps="avcodec avformat avutil swscale"
3016 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3017 remuxing_example_deps="avcodec avformat avutil"
3018 resampling_audio_example_deps="avutil swresample"
3019 scaling_video_example_deps="avutil swscale"
3020 transcode_aac_example_deps="avcodec avformat swresample"
3021 transcoding_example_deps="avfilter avcodec avformat avutil"
3022
3023 # libraries, in linking order
3024 avcodec_deps="avutil"
3025 avdevice_deps="avformat avcodec avutil"
3026 avfilter_deps="avutil"
3027 avformat_deps="avcodec avutil"
3028 avresample_deps="avutil"
3029 postproc_deps="avutil gpl"
3030 swresample_deps="avutil"
3031 swscale_deps="avutil"
3032
3033 # programs
3034 ffmpeg_deps="avcodec avfilter avformat swresample"
3035 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3036                null_filter
3037                setpts_filter trim_filter"
3038 ffplay_deps="avcodec avformat swscale swresample sdl"
3039 ffplay_libs='$sdl_libs'
3040 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3041 ffprobe_deps="avcodec avformat"
3042 ffserver_deps="avformat fork sarestart"
3043 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3044
3045 # documentation
3046 podpages_deps="perl"
3047 manpages_deps="perl pod2man"
3048 htmlpages_deps="perl"
3049 htmlpages_deps_any="makeinfo_html texi2html"
3050 txtpages_deps="perl makeinfo"
3051 doc_deps_any="manpages htmlpages podpages txtpages"
3052
3053 # default parameters
3054
3055 logfile="config.log"
3056
3057 # installation paths
3058 prefix_default="/usr/local"
3059 bindir_default='${prefix}/bin'
3060 datadir_default='${prefix}/share/ffmpeg'
3061 docdir_default='${prefix}/share/doc/ffmpeg'
3062 incdir_default='${prefix}/include'
3063 libdir_default='${prefix}/lib'
3064 mandir_default='${prefix}/share/man'
3065
3066 # toolchain
3067 ar_default="ar"
3068 cc_default="gcc"
3069 cxx_default="g++"
3070 host_cc_default="gcc"
3071 cp_f="cp -f"
3072 doxygen_default="doxygen"
3073 install="install"
3074 ln_s="ln -s -f"
3075 nm_default="nm -g"
3076 objformat="elf"
3077 pkg_config_default=pkg-config
3078 ranlib_default="ranlib"
3079 strip_default="strip"
3080 yasmexe_default="yasm"
3081 windres_default="windres"
3082
3083 # OS
3084 target_os_default=$(tolower $(uname -s))
3085 host_os=$target_os_default
3086
3087 # machine
3088 if test "$target_os_default" = aix; then
3089     arch_default=$(uname -p)
3090     strip_default="strip -X32_64"
3091 else
3092     arch_default=$(uname -m)
3093 fi
3094 cpu="generic"
3095 intrinsics="none"
3096
3097 # configurable options
3098 enable $PROGRAM_LIST
3099 enable $DOCUMENT_LIST
3100 enable $EXAMPLE_LIST
3101 enable $(filter_out avresample $LIBRARY_LIST)
3102 enable stripping
3103
3104 enable asm
3105 enable debug
3106 enable doc
3107 enable faan faandct faanidct
3108 enable optimizations
3109 enable runtime_cpudetect
3110 enable safe_bitstream_reader
3111 enable static
3112 enable swscale_alpha
3113 enable valgrind_backtrace
3114
3115 sws_max_filter_size_default=256
3116 set_default sws_max_filter_size
3117
3118 # Enable platform codecs by default.
3119 enable audiotoolbox
3120
3121 # Enable hwaccels by default.
3122 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3123 enable xlib
3124
3125 enable vda_framework videotoolbox videotoolbox_encoder
3126
3127 # build settings
3128 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3129 LIBPREF="lib"
3130 LIBSUF=".a"
3131 FULLNAME='$(NAME)$(BUILDSUF)'
3132 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3133 SLIBPREF="lib"
3134 SLIBSUF=".so"
3135 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3136 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3137 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3138 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3139 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3140 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3141
3142 asflags_filter=echo
3143 cflags_filter=echo
3144 ldflags_filter=echo
3145
3146 AS_C='-c'
3147 AS_O='-o $@'
3148 CC_C='-c'
3149 CC_E='-E -o $@'
3150 CC_O='-o $@'
3151 CXX_C='-c'
3152 CXX_O='-o $@'
3153 OBJCC_C='-c'
3154 OBJCC_E='-E -o $@'
3155 OBJCC_O='-o $@'
3156 LD_O='-o $@'
3157 LD_LIB='-l%'
3158 LD_PATH='-L'
3159 HOSTCC_C='-c'
3160 HOSTCC_E='-E -o $@'
3161 HOSTCC_O='-o $@'
3162 HOSTLD_O='-o $@'
3163
3164 host_libs='-lm'
3165 host_cflags_filter=echo
3166 host_ldflags_filter=echo
3167
3168 target_path='$(CURDIR)'
3169
3170 # since the object filename is not given with the -MM flag, the compiler
3171 # is only able to print the basename, and we must add the path ourselves
3172 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3173 DEPFLAGS='-MM'
3174
3175 # find source path
3176 if test -f configure; then
3177     source_path=.
3178 else
3179     source_path=$(cd $(dirname "$0"); pwd)
3180     case "$source_path" in
3181         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3182     esac
3183     test -e "$source_path/config.h" &&
3184         die "Out of tree builds are impossible with config.h in source dir."
3185 fi
3186
3187 for v in "$@"; do
3188     r=${v#*=}
3189     l=${v%"$r"}
3190     r=$(sh_quote "$r")
3191     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3192 done
3193
3194 find_things(){
3195     thing=$1
3196     pattern=$2
3197     file=$source_path/$3
3198     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3199 }
3200
3201 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3202 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3203 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3204 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3205 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3206 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3207 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3208 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3209 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3210 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3211
3212 find_things_extern(){
3213     thing=$1
3214     pattern=$2
3215     file=$source_path/$3
3216     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3217 }
3218
3219 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3220
3221 ALL_COMPONENTS="
3222     $BSF_LIST
3223     $DECODER_LIST
3224     $DEMUXER_LIST
3225     $ENCODER_LIST
3226     $FILTER_LIST
3227     $HWACCEL_LIST
3228     $INDEV_LIST
3229     $MUXER_LIST
3230     $OUTDEV_LIST
3231     $PARSER_LIST
3232     $PROTOCOL_LIST
3233 "
3234
3235 for n in $COMPONENT_LIST; do
3236     v=$(toupper ${n%s})_LIST
3237     eval enable \$$v
3238     eval ${n}_if_any="\$$v"
3239 done
3240
3241 enable $ARCH_EXT_LIST
3242
3243 die_unknown(){
3244     echo "Unknown option \"$1\"."
3245     echo "See $0 --help for available options."
3246     exit 1
3247 }
3248
3249 print_in_columns() {
3250     cols=$(expr $ncols / 24)
3251     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3252 }
3253
3254 show_list() {
3255     suffix=_$1
3256     shift
3257     echo $* | sed s/$suffix//g | print_in_columns
3258     exit 0
3259 }
3260
3261 rand_list(){
3262     IFS=', '
3263     set -- $*
3264     unset IFS
3265     for thing; do
3266         comp=${thing%:*}
3267         prob=${thing#$comp}
3268         prob=${prob#:}
3269         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3270         echo "prob ${prob:-0.5}"
3271         printf '%s\n' $comp
3272     done
3273 }
3274
3275 do_random(){
3276     action=$1
3277     shift
3278     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3279     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3280 }
3281
3282 for opt do
3283     optval="${opt#*=}"
3284     case "$opt" in
3285         --extra-ldflags=*)
3286             add_ldflags $optval
3287         ;;
3288         --extra-ldexeflags=*)
3289             add_ldexeflags $optval
3290         ;;
3291         --extra-ldlibflags=*)
3292             add_ldlibflags $optval
3293         ;;
3294         --extra-libs=*)
3295             add_extralibs $optval
3296         ;;
3297         --disable-devices)
3298             disable $INDEV_LIST $OUTDEV_LIST
3299         ;;
3300         --enable-debug=*)
3301             debuglevel="$optval"
3302         ;;
3303         --disable-programs)
3304             disable $PROGRAM_LIST
3305         ;;
3306         --disable-everything)
3307             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3308         ;;
3309         --disable-all)
3310             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3311             disable $LIBRARY_LIST $PROGRAM_LIST doc
3312             enable avutil
3313         ;;
3314         --enable-random|--disable-random)
3315             action=${opt%%-random}
3316             do_random ${action#--} $COMPONENT_LIST
3317         ;;
3318         --enable-random=*|--disable-random=*)
3319             action=${opt%%-random=*}
3320             do_random ${action#--} $optval
3321         ;;
3322         --enable-*=*|--disable-*=*)
3323             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3324             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3325             eval list=\$$(toupper $thing)_LIST
3326             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3327             list=$(filter "$name" $list)
3328             [ "$list" = "" ] && warn "Option $opt did not match anything"
3329             $action $list
3330         ;;
3331         --enable-?*|--disable-?*)
3332             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3333             if is_in $option $COMPONENT_LIST; then
3334                 test $action = disable && action=unset
3335                 eval $action \$$(toupper ${option%s})_LIST
3336             elif is_in $option $CMDLINE_SELECT; then
3337                 $action $option
3338             else
3339                 die_unknown $opt
3340             fi
3341         ;;
3342         --list-*)
3343             NAME="${opt#--list-}"
3344             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3345             NAME=${NAME%s}
3346             eval show_list $NAME \$$(toupper $NAME)_LIST
3347         ;;
3348         --help|-h) show_help
3349         ;;
3350         --fatal-warnings) enable fatal_warnings
3351         ;;
3352         *)
3353             optname="${opt%%=*}"
3354             optname="${optname#--}"
3355             optname=$(echo "$optname" | sed 's/-/_/g')
3356             if is_in $optname $CMDLINE_SET; then
3357                 eval $optname='$optval'
3358             elif is_in $optname $CMDLINE_APPEND; then
3359                 append $optname "$optval"
3360             else
3361                 die_unknown $opt
3362             fi
3363         ;;
3364     esac
3365 done
3366
3367 for e in $env; do
3368     eval "export $e"
3369 done
3370
3371 disabled logging && logfile=/dev/null
3372
3373 # Disable all the library-specific components if the library itself
3374 # is disabled, see AVCODEC_LIST and following _LIST variables.
3375
3376 disable_components(){
3377     disabled ${1} && disable $(
3378         eval components="\$$(toupper ${1})_COMPONENTS"
3379         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3380     )
3381 }
3382
3383 map 'disable_components $v' $LIBRARY_LIST
3384
3385 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3386 set >> $logfile
3387
3388 test -n "$valgrind" && toolchain="valgrind-memcheck"
3389
3390 case "$toolchain" in
3391     *-asan)
3392         cc_default="${toolchain%-asan}"
3393         add_cflags  -fsanitize=address
3394         add_ldflags -fsanitize=address
3395     ;;
3396     *-tsan)
3397         cc_default="${toolchain%-tsan}"
3398         add_cflags  -fsanitize=thread -pie
3399         add_ldflags -fsanitize=thread -pie
3400         case "$toolchain" in
3401             gcc-tsan)
3402                 add_cflags  -fPIC
3403                 add_ldflags -fPIC
3404                 ;;
3405         esac
3406     ;;
3407     *-usan)
3408         cc_default="${toolchain%-usan}"
3409         add_cflags  -fsanitize=undefined
3410         add_ldflags -fsanitize=undefined
3411     ;;
3412     valgrind-*)
3413         target_exec_default="valgrind"
3414         case "$toolchain" in
3415             valgrind-massif)
3416                 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"
3417                 ;;
3418             valgrind-memcheck)
3419                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3420                 ;;
3421         esac
3422     ;;
3423     msvc)
3424         # Check whether the current MSVC version needs the C99 converter.
3425         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3426         # support enough of C99 to build ffmpeg. Default to the new
3427         # behaviour if the regexp was unable to match anything, since this
3428         # successfully parses the version number of existing supported
3429         # versions that require the converter (MSVC 2010 and 2012).
3430         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3431         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3432             cc_default="cl"
3433         else
3434             cc_default="c99wrap cl"
3435         fi
3436         ld_default="$source_path/compat/windows/mslink"
3437         nm_default="dumpbin -symbols"
3438         ar_default="lib"
3439         case "$arch" in
3440         arm*)
3441             as_default="armasm"
3442             ;;
3443         esac
3444         target_os_default="win32"
3445         # Use a relative path for TMPDIR. This makes sure all the
3446         # ffconf temp files are written with a relative path, avoiding
3447         # issues with msys/win32 path conversion for MSVC parameters
3448         # such as -Fo<file> or -out:<file>.
3449         TMPDIR=.
3450     ;;
3451     icl)
3452         cc_default="icl"
3453         ld_default="xilink"
3454         nm_default="dumpbin -symbols"
3455         ar_default="xilib"
3456         target_os_default="win32"
3457         TMPDIR=.
3458     ;;
3459     gcov)
3460         add_cflags  -fprofile-arcs -ftest-coverage
3461         add_ldflags -fprofile-arcs -ftest-coverage
3462     ;;
3463     hardened)
3464         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3465         add_cflags   -fno-strict-overflow -fstack-protector-all
3466         add_ldflags  -Wl,-z,relro -Wl,-z,now
3467     ;;
3468     ?*)
3469         die "Unknown toolchain $toolchain"
3470     ;;
3471 esac
3472
3473 test -n "$cross_prefix" && enable cross_compile
3474
3475 if enabled cross_compile; then
3476     test -n "$arch" && test -n "$target_os" ||
3477         die "Must specify target arch and OS when cross-compiling"
3478 fi
3479
3480 ar_default="${cross_prefix}${ar_default}"
3481 cc_default="${cross_prefix}${cc_default}"
3482 cxx_default="${cross_prefix}${cxx_default}"
3483 nm_default="${cross_prefix}${nm_default}"
3484 pkg_config_default="${cross_prefix}${pkg_config_default}"
3485 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3486     ranlib_default="${cross_prefix}${ranlib_default} -D"
3487 else
3488     ranlib_default="${cross_prefix}${ranlib_default}"
3489 fi
3490 strip_default="${cross_prefix}${strip_default}"
3491 windres_default="${cross_prefix}${windres_default}"
3492
3493 sysinclude_default="${sysroot}/usr/include"
3494
3495 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3496     target_exec target_os yasmexe
3497 enabled cross_compile || host_cc_default=$cc
3498 set_default host_cc
3499
3500 pkg_config_fail_message=""
3501 if ! $pkg_config --version >/dev/null 2>&1; then
3502     warn "$pkg_config not found, library detection may fail."
3503     pkg_config=false
3504 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3505     pkg_config_fail_message="
3506 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3507 fi
3508
3509 if test $doxygen != $doxygen_default && \
3510   ! $doxygen --version >/dev/null 2>&1; then
3511     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3512 fi
3513
3514 exesuf() {
3515     case $1 in
3516         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3517     esac
3518 }
3519
3520 EXESUF=$(exesuf $target_os)
3521 HOSTEXESUF=$(exesuf $host_os)
3522
3523 # set temporary file name
3524 : ${TMPDIR:=$TEMPDIR}
3525 : ${TMPDIR:=$TMP}
3526 : ${TMPDIR:=/tmp}
3527
3528 if [ -n "$tempprefix" ] ; then
3529     mktemp(){
3530         echo $tempprefix.${HOSTNAME}.${UID}
3531     }
3532 elif ! check_cmd mktemp -u XXXXXX; then
3533     # simple replacement for missing mktemp
3534     # NOT SAFE FOR GENERAL USE
3535     mktemp(){
3536         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3537     }
3538 fi
3539
3540 tmpfile(){
3541     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3542         (set -C; exec > $tmp) 2>/dev/null ||
3543         die "Unable to create temporary file in $TMPDIR."
3544     append TMPFILES $tmp
3545     eval $1=$tmp
3546 }
3547
3548 trap 'rm -f -- $TMPFILES' EXIT
3549
3550 tmpfile TMPASM .asm
3551 tmpfile TMPC   .c
3552 tmpfile TMPCPP .cpp
3553 tmpfile TMPE   $EXESUF
3554 tmpfile TMPH   .h
3555 tmpfile TMPM   .m
3556 tmpfile TMPO   .o
3557 tmpfile TMPS   .S
3558 tmpfile TMPSH  .sh
3559 tmpfile TMPV   .ver
3560
3561 unset -f mktemp
3562
3563 chmod +x $TMPE
3564
3565 # make sure we can execute files in $TMPDIR
3566 cat > $TMPSH 2>> $logfile <<EOF
3567 #! /bin/sh
3568 EOF
3569 chmod +x $TMPSH >> $logfile 2>&1
3570 if ! $TMPSH >> $logfile 2>&1; then
3571     cat <<EOF
3572 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3573 variable to another directory and make sure that it is not mounted noexec.
3574 EOF
3575     die "Sanity test failed."
3576 fi
3577
3578 armasm_flags(){
3579     for flag; do
3580         case $flag in
3581             # Filter out MSVC cl.exe options from cflags that shouldn't
3582             # be passed to gas-preprocessor
3583             -M[TD]*)                                            ;;
3584             *)                  echo $flag                      ;;
3585         esac
3586    done
3587 }
3588
3589 ccc_flags(){
3590     for flag; do
3591         case $flag in
3592             -std=c99)           echo -c99                       ;;
3593             -mcpu=*)            echo -arch ${flag#*=}           ;;
3594             -mieee)             echo -ieee                      ;;
3595             -O*|-fast)          echo $flag                      ;;
3596             -fno-math-errno)    echo -assume nomath_errno       ;;
3597             -g)                 echo -g3                        ;;
3598             -Wall)              echo -msg_enable level2         ;;
3599             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3600             -Wl,*)              echo $flag                      ;;
3601             -f*|-W*)                                            ;;
3602             *)                  echo $flag                      ;;
3603         esac
3604    done
3605 }
3606
3607 cparser_flags(){
3608     for flag; do
3609         case $flag in
3610             -Wno-switch)             echo -Wno-switch-enum ;;
3611             -Wno-format-zero-length) ;;
3612             -Wdisabled-optimization) ;;
3613             -Wno-pointer-sign)       echo -Wno-other ;;
3614             *)                       echo $flag ;;
3615         esac
3616     done
3617 }
3618
3619 msvc_common_flags(){
3620     for flag; do
3621         case $flag in
3622             # In addition to specifying certain flags under the compiler
3623             # specific filters, they must be specified here as well or else the
3624             # generic catch all at the bottom will print the original flag.
3625             -Wall)                ;;
3626             -std=c99)             ;;
3627             # Common flags
3628             -fomit-frame-pointer) ;;
3629             -g)                   echo -Z7 ;;
3630             -fno-math-errno)      ;;
3631             -fno-common)          ;;
3632             -fno-signed-zeros)    ;;
3633             -fPIC)                ;;
3634             -mthumb)              ;;
3635             -march=*)             ;;
3636             -lz)                  echo zlib.lib ;;
3637             -lavifil32)           echo vfw32.lib ;;
3638             -lavicap32)           echo vfw32.lib user32.lib ;;
3639             -lx264)               echo libx264.lib ;;
3640             -l*)                  echo ${flag#-l}.lib ;;
3641             -LARGEADDRESSAWARE)   echo $flag ;;
3642             -L*)                  echo -libpath:${flag#-L} ;;
3643             *)                    echo $flag ;;
3644         esac
3645     done
3646 }
3647
3648 msvc_flags(){
3649     msvc_common_flags "$@"
3650     for flag; do
3651         case $flag in
3652             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3653                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3654                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3655                                        -wd4307 \
3656                                        -wd4273 -wd4554 -wd4701 ;;
3657         esac
3658     done
3659 }
3660
3661 icl_flags(){
3662     msvc_common_flags "$@"
3663     for flag; do
3664         case $flag in
3665             # Despite what Intel's documentation says -Wall, which is supported
3666             # on Windows, does enable remarks so disable them here.
3667             -Wall)                echo $flag -Qdiag-disable:remark ;;
3668             -std=c99)             echo -Qstd=c99 ;;
3669             -flto)                echo -ipo ;;
3670         esac
3671     done
3672 }
3673
3674 icc_flags(){
3675     for flag; do
3676         case $flag in
3677             -flto)                echo -ipo ;;
3678             *)                    echo $flag ;;
3679         esac
3680     done
3681 }
3682
3683 pgi_flags(){
3684     for flag; do
3685         case $flag in
3686             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3687             -fomit-frame-pointer) echo -Mnoframe ;;
3688             -g)                   echo -gopt ;;
3689             *)                    echo $flag ;;
3690         esac
3691     done
3692 }
3693
3694 suncc_flags(){
3695     for flag; do
3696         case $flag in
3697             -march=*|-mcpu=*)
3698                 case "${flag#*=}" in
3699                     native)                   echo -xtarget=native       ;;
3700                     v9|niagara)               echo -xarch=sparc          ;;
3701                     ultrasparc)               echo -xarch=sparcvis       ;;
3702                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3703                     i586|pentium)             echo -xchip=pentium        ;;
3704                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3705                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3706                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3707                     pentium4*)          echo -xtarget=pentium4           ;;
3708                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3709                     *-sse3)             echo -xarch=sse3                 ;;
3710                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3711                     bonnell)                   echo -xarch=ssse3         ;;
3712                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3713                     westmere)                  echo -xtarget=westmere    ;;
3714                     silvermont)                echo -xarch=sse4_2        ;;
3715                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3716                     core-avx*|ivybridge|haswell|broadwell)
3717                                                echo -xarch=avx           ;;
3718                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3719                     btver1)                    echo -xarch=amdsse4a      ;;
3720                     btver2|bdver*)             echo -xarch=avx           ;;
3721                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3722                     k8|opteron|athlon64|athlon-fx)
3723                                                echo -xarch=sse2a         ;;
3724                     athlon*)                   echo -xarch=pentium_proa  ;;
3725                 esac
3726                 ;;
3727             -std=c99)             echo -xc99              ;;
3728             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3729             -fPIC)                echo -KPIC -xcode=pic32 ;;
3730             -W*,*)                echo $flag              ;;
3731             -f*-*|-W*|-mimpure-text)                      ;;
3732             -shared)              echo -G                 ;;
3733             *)                    echo $flag              ;;
3734         esac
3735     done
3736 }
3737
3738 tms470_flags(){
3739     for flag; do
3740         case $flag in
3741             -march=*|-mcpu=*)
3742                 case "${flag#*=}" in
3743                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3744                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3745                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3746                     armv6*|arm11*)          echo -mv=6   ;;
3747                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3748                                             echo -mv=5e  ;;
3749                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3750                 esac
3751                 ;;
3752             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3753             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3754             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3755             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3756             -msoft-float)   echo --float_support=vfplib       ;;
3757             -O[0-3]|-mf=*)  echo $flag                        ;;
3758             -g)             echo -g -mn                       ;;
3759             -pds=*)         echo $flag                        ;;
3760             -D*|-I*)        echo $flag                        ;;
3761             --gcc|--abi=*)  echo $flag                        ;;
3762             -me)            echo $flag                        ;;
3763         esac
3764     done
3765 }
3766
3767 probe_cc(){
3768     pfx=$1
3769     _cc=$2
3770     first=$3
3771
3772     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3773     unset _ld_o _ldflags _ld_lib _ld_path
3774     unset _depflags _DEPCMD _DEPFLAGS
3775     _flags_filter=echo
3776
3777     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3778         true # no-op to avoid reading stdin in following checks
3779     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3780         _type=llvm_gcc
3781         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3782         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3783         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3784         _cflags_speed='-O3'
3785         _cflags_size='-Os'
3786     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3787         _type=gcc
3788         gcc_version=$($_cc --version | head -n1)
3789         gcc_basever=$($_cc -dumpversion)
3790         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3791         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3792         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3793         case $gcc_basever in
3794             2) ;;
3795             2.*) ;;
3796             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3797         esac
3798         if [ "$first" = true ]; then
3799             case $gcc_basever in
3800                 4.2*)
3801                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3802             esac
3803         fi
3804         _cflags_speed='-O3'
3805         _cflags_size='-Os'
3806     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3807         _type=icc
3808         _ident=$($_cc --version | head -n1)
3809         _depflags='-MMD'
3810         _cflags_speed='-O3'
3811         _cflags_size='-Os'
3812         _cflags_noopt='-O1'
3813         _flags_filter=icc_flags
3814     elif $_cc -v 2>&1 | grep -q xlc; then
3815         _type=xlc
3816         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3817         _cflags_speed='-O5'
3818         _cflags_size='-O5 -qcompact'
3819     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3820         _type=ccc
3821         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3822         _DEPFLAGS='-M'
3823         _cflags_speed='-fast'
3824         _cflags_size='-O1'
3825         _flags_filter=ccc_flags
3826     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3827         test -d "$sysroot" || die "No valid sysroot specified."
3828         _type=armcc
3829         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3830         armcc_conf="$PWD/armcc.conf"
3831         $_cc --arm_linux_configure                 \
3832              --arm_linux_config_file="$armcc_conf" \
3833              --configure_sysroot="$sysroot"        \
3834              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3835              die "Error creating armcc configuration file."
3836         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3837         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3838         as_default="${cross_prefix}gcc"
3839         _depflags='-MMD'
3840         _cflags_speed='-O3'
3841         _cflags_size='-Os'
3842     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3843         _type=tms470
3844         _ident=$($_cc -version | head -n1 | tr -s ' ')
3845         _flags='--gcc --abi=eabi -me'
3846         _cc_e='-ppl -fe=$@'
3847         _cc_o='-fe=$@'
3848         _depflags='-ppa -ppd=$(@:.o=.d)'
3849         _cflags_speed='-O3 -mf=5'
3850         _cflags_size='-O3 -mf=2'
3851         _flags_filter=tms470_flags
3852     elif $_cc -v 2>&1 | grep -q clang; then
3853         _type=clang
3854         _ident=$($_cc --version 2>/dev/null | head -n1)
3855         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3856         _cflags_speed='-O3'
3857         _cflags_size='-Os'
3858     elif $_cc -V 2>&1 | grep -q Sun; then
3859         _type=suncc
3860         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3861         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3862         _DEPFLAGS='-xM1 -xc99'
3863         _ldflags='-std=c99'
3864         _cflags_speed='-O5'
3865         _cflags_size='-O5 -xspace'
3866         _flags_filter=suncc_flags
3867     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3868         _type=pathscale
3869         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3870         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3871         _cflags_speed='-O2'
3872         _cflags_size='-Os'
3873         _flags_filter='filter_out -Wdisabled-optimization'
3874     elif $_cc -v 2>&1 | grep -q Open64; then
3875         _type=open64
3876         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3877         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3878         _cflags_speed='-O2'
3879         _cflags_size='-Os'
3880         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3881     elif $_cc -V 2>&1 | grep -q Portland; then
3882         _type=pgi
3883         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3884         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3885         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3886         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3887         _cflags_noopt="-O"
3888         _flags_filter=pgi_flags
3889     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3890         _type=armasm
3891         _ident=$($_cc | head -n1)
3892         # 4509: "This form of conditional instruction is deprecated"
3893         _flags="-nologo -ignore 4509"
3894         _flags_filter=armasm_flags
3895     elif $_cc 2>&1 | grep -q Intel; then
3896         _type=icl
3897         _ident=$($_cc 2>&1 | head -n1)
3898         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3899         # Not only is O3 broken on 13.x+ but it is slower on all previous
3900         # versions (tested) as well.
3901         _cflags_speed="-O2"
3902         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3903         if $_cc 2>&1 | grep -q Linker; then
3904             _ld_o='-out:$@'
3905         else
3906             _ld_o='-Fe$@'
3907         fi
3908         _cc_o='-Fo$@'
3909         _cc_e='-P'
3910         _flags_filter=icl_flags
3911         _ld_lib='lib%.a'
3912         _ld_path='-libpath:'
3913         # -Qdiag-error to make icl error when seeing certain unknown arguments
3914         _flags='-nologo -Qdiag-error:4044,10157'
3915         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3916         # with MSVC which enables it by default.
3917         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3918         disable stripping
3919     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3920         _type=msvc
3921         _ident=$($_cc 2>&1 | head -n1)
3922         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3923         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3924         _cflags_speed="-O2"
3925         _cflags_size="-O1"
3926         if $_cc -nologo- 2>&1 | grep -q Linker; then
3927             _ld_o='-out:$@'
3928         else
3929             _ld_o='-Fe$@'
3930         fi
3931         _cc_o='-Fo$@'
3932         _cc_e='-P -Fi$@'
3933         _flags_filter=msvc_flags
3934         _ld_lib='lib%.a'
3935         _ld_path='-libpath:'
3936         _flags='-nologo'
3937         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3938         disable stripping
3939     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3940         _type=cparser
3941         _ident=$($_cc --version | head -n1)
3942         _depflags='-MMD'
3943         _cflags_speed='-O4'
3944         _cflags_size='-O2'
3945         _flags_filter=cparser_flags
3946     fi
3947
3948     eval ${pfx}_type=\$_type
3949     eval ${pfx}_ident=\$_ident
3950 }
3951
3952 set_ccvars(){
3953     eval ${1}_C=\${_cc_c-\${${1}_C}}
3954     eval ${1}_E=\${_cc_e-\${${1}_E}}
3955     eval ${1}_O=\${_cc_o-\${${1}_O}}
3956
3957     if [ -n "$_depflags" ]; then
3958         eval ${1}_DEPFLAGS=\$_depflags
3959     else
3960         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3961         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3962         eval DEP${1}FLAGS=\$_flags
3963     fi
3964 }
3965
3966 probe_cc cc "$cc" "true"
3967 cflags_filter=$_flags_filter
3968 cflags_speed=$_cflags_speed
3969 cflags_size=$_cflags_size
3970 cflags_noopt=$_cflags_noopt
3971 add_cflags $_flags $_cflags
3972 cc_ldflags=$_ldflags
3973 set_ccvars CC
3974
3975 probe_cc hostcc "$host_cc"
3976 host_cflags_filter=$_flags_filter
3977 add_host_cflags  $_flags $_cflags
3978 set_ccvars HOSTCC
3979
3980 test -n "$cc_type" && enable $cc_type ||
3981     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3982
3983 : ${as_default:=$cc}
3984 : ${objcc_default:=$cc}
3985 : ${dep_cc_default:=$cc}
3986 : ${ld_default:=$cc}
3987 : ${host_ld_default:=$host_cc}
3988 set_default ar as objcc dep_cc ld host_ld windres
3989
3990 probe_cc as "$as"
3991 asflags_filter=$_flags_filter
3992 add_asflags $_flags $_cflags
3993 set_ccvars AS
3994
3995 probe_cc objcc "$objcc"
3996 objcflags_filter=$_flags_filter
3997 add_objcflags $_flags $_cflags
3998 set_ccvars OBJC
3999
4000 probe_cc ld "$ld"
4001 ldflags_filter=$_flags_filter
4002 add_ldflags $_flags $_ldflags
4003 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4004 LD_O=${_ld_o-$LD_O}
4005 LD_LIB=${_ld_lib-$LD_LIB}
4006 LD_PATH=${_ld_path-$LD_PATH}
4007
4008 probe_cc hostld "$host_ld"
4009 host_ldflags_filter=$_flags_filter
4010 add_host_ldflags $_flags $_ldflags
4011 HOSTLD_O=${_ld_o-$HOSTLD_O}
4012
4013 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4014     probe_cc depcc "$dep_cc"
4015     CCDEP=${_DEPCMD:-$DEPCMD}
4016     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4017     DEPCCFLAGS=$_flags
4018 fi
4019
4020 if $ar 2>&1 | grep -q Microsoft; then
4021     arflags="-nologo"
4022     ar_o='-out:$@'
4023 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4024     arflags="rq"
4025     ar_o='$@'
4026 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4027     arflags='-Xany -r -c'
4028     ar_o='$@'
4029 elif $ar 2>&1 | grep -q "\[D\] "; then
4030     arflags="rcD"
4031     ar_o='$@'
4032 else
4033     arflags="rc"
4034     ar_o='$@'
4035 fi
4036
4037 add_cflags $extra_cflags
4038 add_cxxflags $extra_cxxflags
4039 add_objcflags $extra_objcflags
4040 add_asflags $extra_cflags
4041
4042 if test -n "$sysroot"; then
4043     case "$cc_type" in
4044         gcc|llvm_gcc|clang)
4045             add_cppflags --sysroot="$sysroot"
4046             add_ldflags --sysroot="$sysroot"
4047 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4048             add_cppflags -isysroot "$sysroot"
4049             add_ldflags -isysroot "$sysroot"
4050         ;;
4051         tms470)
4052             add_cppflags -I"$sysinclude"
4053             add_ldflags  --sysroot="$sysroot"
4054         ;;
4055     esac
4056 fi
4057
4058 if test "$cpu" = host; then
4059     enabled cross_compile &&
4060         die "--cpu=host makes no sense when cross-compiling."
4061
4062     case "$cc_type" in
4063         gcc|llvm_gcc)
4064             check_native(){
4065                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4066                 sed -n "/cc1.*$1=/{
4067                             s/.*$1=\\([^ ]*\\).*/\\1/
4068                             p
4069                             q
4070                         }" $TMPE
4071             }
4072             cpu=$(check_native -march || check_native -mcpu)
4073         ;;
4074         clang)
4075             check_native(){
4076                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4077                 sed -n "/cc1.*-target-cpu /{
4078                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4079                             p
4080                             q
4081                         }" $TMPE
4082             }
4083             cpu=$(check_native -march)
4084         ;;
4085     esac
4086
4087     test "${cpu:-host}" = host &&
4088         die "--cpu=host not supported with compiler $cc"
4089 fi
4090
4091 # Deal with common $arch aliases
4092 case "$arch" in
4093     aarch64|arm64)
4094         arch="aarch64"
4095     ;;
4096     arm*|iPad*|iPhone*)
4097         arch="arm"
4098     ;;
4099     mips*|IP*)
4100         case "$arch" in
4101         *el)
4102             add_cppflags -EL
4103             add_ldflags -EL
4104         ;;
4105         *eb)
4106             add_cppflags -EB
4107             add_ldflags -EB
4108         ;;
4109         esac
4110         arch="mips"
4111     ;;
4112     parisc*|hppa*)
4113         arch="parisc"
4114     ;;
4115     "Power Macintosh"|ppc*|powerpc*)
4116         arch="ppc"
4117     ;;
4118     s390|s390x)
4119         arch="s390"
4120     ;;
4121     sh4|sh)
4122         arch="sh4"
4123     ;;
4124     sun4u|sparc*)
4125         arch="sparc"
4126     ;;
4127     tilegx|tile-gx)
4128         arch="tilegx"
4129     ;;
4130     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4131         arch="x86"
4132     ;;
4133 esac
4134
4135 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4136 enable $arch
4137
4138 # Add processor-specific flags
4139 if enabled aarch64; then
4140
4141     case $cpu in
4142         armv*)
4143             cpuflags="-march=$cpu"
4144         ;;
4145         *)
4146             cpuflags="-mcpu=$cpu"
4147         ;;
4148     esac
4149
4150 elif enabled alpha; then
4151
4152     cpuflags="-mcpu=$cpu"
4153
4154 elif enabled arm; then
4155
4156     check_arm_arch() {
4157         check_cpp_condition stddef.h \
4158             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4159             $cpuflags
4160     }
4161
4162     probe_arm_arch() {
4163         if   check_arm_arch 4;        then echo armv4;
4164         elif check_arm_arch 4T;       then echo armv4t;
4165         elif check_arm_arch 5;        then echo armv5;
4166         elif check_arm_arch 5E;       then echo armv5e;
4167         elif check_arm_arch 5T;       then echo armv5t;
4168         elif check_arm_arch 5TE;      then echo armv5te;
4169         elif check_arm_arch 5TEJ;     then echo armv5te;
4170         elif check_arm_arch 6;        then echo armv6;
4171         elif check_arm_arch 6J;       then echo armv6j;
4172         elif check_arm_arch 6K;       then echo armv6k;
4173         elif check_arm_arch 6Z;       then echo armv6z;
4174         elif check_arm_arch 6ZK;      then echo armv6zk;
4175         elif check_arm_arch 6T2;      then echo armv6t2;
4176         elif check_arm_arch 7;        then echo armv7;
4177         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4178         elif check_arm_arch 7S;       then echo armv7-a;
4179         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4180         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4181         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4182         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4183         fi
4184     }
4185
4186     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4187
4188     case $cpu in
4189         armv*)
4190             cpuflags="-march=$cpu"
4191             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4192         ;;
4193         *)
4194             cpuflags="-mcpu=$cpu"
4195             case $cpu in
4196                 cortex-a*)                               subarch=armv7a  ;;
4197                 cortex-r*)                               subarch=armv7r  ;;
4198                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4199                 arm11*)                                  subarch=armv6   ;;
4200                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4201                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4202                 *)                             subarch=$(probe_arm_arch) ;;
4203             esac
4204         ;;
4205     esac
4206
4207     case "$subarch" in
4208         armv5t*)    enable fast_clz                ;;
4209         armv[6-8]*)
4210             enable fast_clz
4211             disabled fast_unaligned || enable fast_unaligned
4212             ;;
4213     esac
4214
4215 elif enabled avr32; then
4216
4217     case $cpu in
4218         ap7[02]0[0-2])
4219             subarch="avr32_ap"
4220             cpuflags="-mpart=$cpu"
4221         ;;
4222         ap)
4223             subarch="avr32_ap"
4224             cpuflags="-march=$cpu"
4225         ;;
4226         uc3[ab]*)
4227             subarch="avr32_uc"
4228             cpuflags="-mcpu=$cpu"
4229         ;;
4230         uc)
4231             subarch="avr32_uc"
4232             cpuflags="-march=$cpu"
4233         ;;
4234     esac
4235
4236 elif enabled bfin; then
4237
4238     cpuflags="-mcpu=$cpu"
4239
4240 elif enabled mips; then
4241
4242     cpuflags="-march=$cpu"
4243
4244     if [ "$cpu" != "generic" ]; then
4245         disable mips32r2
4246         disable mips32r5
4247         disable mips64r2
4248         disable mips32r6
4249         disable mips64r6
4250         disable loongson2
4251         disable loongson3
4252
4253         case $cpu in
4254             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4255                 enable mips32r2
4256                 disable msa
4257             ;;
4258             p5600|i6400)
4259                 disable mipsdsp
4260                 disable mipsdspr2
4261             ;;
4262             loongson*)
4263                 enable loongson2
4264                 enable loongson3
4265                 enable local_aligned_8 local_aligned_16 local_aligned_32
4266                 enable simd_align_16
4267                 enable fast_64bit
4268                 enable fast_clz
4269                 enable fast_cmov
4270                 enable fast_unaligned
4271                 disable aligned_stack
4272                 case $cpu in
4273                     loongson3*)
4274                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4275                     ;;
4276                     loongson2e)
4277                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4278                     ;;
4279                     loongson2f)
4280                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4281                     ;;
4282                 esac
4283             ;;
4284             *)
4285                 # Unknown CPU. Disable everything.
4286                 warn "unknown CPU. Disabling all MIPS optimizations."
4287                 disable mipsfpu
4288                 disable mipsdsp
4289                 disable mipsdspr2
4290                 disable msa
4291                 disable mmi
4292             ;;
4293         esac
4294
4295         case $cpu in
4296             24kc)
4297                 disable mipsfpu
4298                 disable mipsdsp
4299                 disable mipsdspr2
4300             ;;
4301             24kf*)
4302                 disable mipsdsp
4303                 disable mipsdspr2
4304             ;;
4305             24kec|34kc|1004kc)
4306                 disable mipsfpu
4307                 disable mipsdspr2
4308             ;;
4309             24kef*|34kf*|1004kf*)
4310                 disable mipsdspr2
4311             ;;
4312             74kc)
4313                 disable mipsfpu
4314             ;;
4315             p5600)
4316                 enable mips32r5
4317                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4318             ;;
4319             i6400)
4320                 enable mips64r6
4321                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4322             ;;
4323         esac
4324     else
4325         # We do not disable anything. Is up to the user to disable the unwanted features.
4326         warn 'generic cpu selected'
4327     fi
4328
4329 elif enabled ppc; then
4330
4331     disable ldbrx
4332
4333     case $(tolower $cpu) in
4334         601|ppc601|powerpc601)
4335             cpuflags="-mcpu=601"
4336             disable altivec
4337         ;;
4338         603*|ppc603*|powerpc603*)
4339             cpuflags="-mcpu=603"
4340             disable altivec
4341         ;;
4342         604*|ppc604*|powerpc604*)
4343             cpuflags="-mcpu=604"
4344             disable altivec
4345         ;;
4346         g3|75*|ppc75*|powerpc75*)
4347             cpuflags="-mcpu=750"
4348             disable altivec
4349         ;;
4350         g4|745*|ppc745*|powerpc745*)
4351             cpuflags="-mcpu=7450"
4352             disable vsx
4353         ;;
4354         74*|ppc74*|powerpc74*)
4355             cpuflags="-mcpu=7400"
4356             disable vsx
4357         ;;
4358         g5|970|ppc970|powerpc970)
4359             cpuflags="-mcpu=970"
4360             disable vsx
4361         ;;
4362         power[3-6]*)
4363             cpuflags="-mcpu=$cpu"
4364             disable vsx
4365         ;;
4366         power[7-8]*)
4367             cpuflags="-mcpu=$cpu"
4368         ;;
4369         cell)
4370             cpuflags="-mcpu=cell"
4371             enable ldbrx
4372             disable vsx
4373         ;;
4374         e500mc)
4375             cpuflags="-mcpu=e500mc"
4376             disable altivec
4377         ;;
4378         e500v2)
4379             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4380             disable altivec
4381             disable dcbzl
4382         ;;
4383         e500)
4384             cpuflags="-mcpu=8540 -mhard-float"
4385             disable altivec
4386             disable dcbzl
4387         ;;
4388     esac
4389
4390 elif enabled sparc; then
4391
4392     case $cpu in
4393         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4394             cpuflags="-mcpu=$cpu"
4395         ;;
4396         ultrasparc*|niagara[234])
4397             cpuflags="-mcpu=$cpu"
4398         ;;
4399     esac
4400
4401 elif enabled x86; then
4402
4403     case $cpu in
4404         i[345]86|pentium)
4405             cpuflags="-march=$cpu"
4406             disable i686
4407             disable mmx
4408         ;;
4409         # targets that do NOT support nopl and conditional mov (cmov)
4410         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4411             cpuflags="-march=$cpu"
4412             disable i686
4413         ;;
4414         # targets that do support nopl and conditional mov (cmov)
4415         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4416         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4417             cpuflags="-march=$cpu"
4418             enable i686
4419             enable fast_cmov
4420         ;;
4421         # targets that do support conditional mov but on which it's slow
4422         pentium4|pentium4m|prescott|nocona)
4423             cpuflags="-march=$cpu"
4424             enable i686
4425             disable fast_cmov
4426         ;;
4427     esac
4428
4429 fi
4430
4431 if [ "$cpu" != generic ]; then
4432     add_cflags  $cpuflags
4433     add_asflags $cpuflags
4434     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4435 fi
4436
4437 # compiler sanity check
4438 check_exec <<EOF
4439 int main(void){ return 0; }
4440 EOF
4441 if test "$?" != 0; then
4442     echo "$cc is unable to create an executable file."
4443     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4444         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4445         echo "Only do this if you know what cross compiling means."
4446     fi
4447     die "C compiler test failed."
4448 fi
4449
4450 add_cppflags -D_ISOC99_SOURCE
4451 add_cxxflags -D__STDC_CONSTANT_MACROS
4452 check_cflags -std=c99
4453 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4454 #include <stdlib.h>
4455 EOF
4456 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4457 #include <stdlib.h>
4458 EOF
4459
4460 add_host_cppflags -D_ISOC99_SOURCE
4461 check_host_cflags -std=c99
4462 check_host_cflags -Wall
4463 check_host_cflags -O3
4464
4465 check_64bit(){
4466     arch32=$1
4467     arch64=$2
4468     expr=$3
4469     check_code cc "" "int test[2*($expr) - 1]" &&
4470         subarch=$arch64 || subarch=$arch32
4471 }
4472
4473 case "$arch" in
4474     aarch64|alpha|ia64)
4475         spic=$shared
4476     ;;
4477     mips)
4478         check_64bit mips mips64 '_MIPS_SIM > 1'
4479         spic=$shared
4480     ;;
4481     parisc)
4482         check_64bit parisc parisc64 'sizeof(void *) > 4'
4483         spic=$shared
4484     ;;
4485     ppc)
4486         check_64bit ppc ppc64 'sizeof(void *) > 4'
4487         spic=$shared
4488     ;;
4489     s390)
4490         check_64bit s390 s390x 'sizeof(void *) > 4'
4491         spic=$shared
4492     ;;
4493     sparc)
4494         check_64bit sparc sparc64 'sizeof(void *) > 4'
4495         spic=$shared
4496     ;;
4497     x86)
4498         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4499         # Treat x32 as x64 for now. Note it also needs spic=$shared
4500         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4501             subarch=x86_64
4502         if test "$subarch" = "x86_64"; then
4503             spic=$shared
4504         fi
4505     ;;
4506     ppc)
4507         check_cc <<EOF && subarch="ppc64"
4508         int test[(int)sizeof(char*) - 7];
4509 EOF
4510     ;;
4511 esac
4512
4513 enable $subarch
4514 enabled spic && enable_weak pic
4515
4516 # OS specific
4517 case $target_os in
4518     aix)
4519         SHFLAGS=-shared
4520         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4521         enabled shared && add_ldflags -Wl,-brtl
4522         ;;
4523     android)
4524         disable symver
4525         enable section_data_rel_ro
4526         SLIB_INSTALL_NAME='$(SLIBNAME)'
4527         SLIB_INSTALL_LINKS=
4528         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4529         ;;
4530     haiku)
4531         prefix_default="/boot/common"
4532         network_extralibs="-lnetwork"
4533         host_libs=
4534         ;;
4535     sunos)
4536         SHFLAGS='-shared -Wl,-h,$$(@F)'
4537         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4538         network_extralibs="-lsocket -lnsl"
4539         add_cppflags -D__EXTENSIONS__
4540         # When using suncc to build, the Solaris linker will mark
4541         # an executable with each instruction set encountered by
4542         # the Solaris assembler.  As our libraries contain their own
4543         # guards for processor-specific code, instead suppress
4544         # generation of the HWCAPS ELF section on Solaris x86 only.
4545         enabled_all suncc x86 &&
4546             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4547             add_ldflags -Wl,-M,mapfile
4548         nm_default='nm -P -g'
4549         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4550         ;;
4551     netbsd)
4552         disable symver
4553         oss_indev_extralibs="-lossaudio"
4554         oss_outdev_extralibs="-lossaudio"
4555         enabled gcc || check_ldflags -Wl,-zmuldefs
4556         ;;
4557     openbsd|bitrig)
4558         disable symver
4559         SHFLAGS='-shared'
4560         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4561         SLIB_INSTALL_LINKS=
4562         oss_indev_extralibs="-lossaudio"
4563         oss_outdev_extralibs="-lossaudio"
4564         ;;
4565     dragonfly)
4566         disable symver
4567         ;;
4568     freebsd)
4569         ;;
4570     bsd/os)
4571         add_extralibs -lpoll -lgnugetopt
4572         strip="strip -d"
4573         ;;
4574     darwin)
4575         enabled ppc && add_asflags -force_cpusubtype_ALL
4576         install_name_dir_default='$(SHLIBDIR)'
4577         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4578         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4579         strip="${strip} -x"
4580         add_ldflags -Wl,-dynamic,-search_paths_first
4581         SLIBSUF=".dylib"
4582         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4583         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4584         objformat="macho"
4585         enabled x86_64 && objformat="macho64"
4586         enabled_any pic shared x86_64 ||
4587             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4588         check_header dispatch/dispatch.h
4589         ;;
4590     msys*)
4591         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4592         ;;
4593     mingw32*|mingw64*)
4594         if test $target_os = "mingw32ce"; then
4595             disable network
4596         else
4597             target_os=mingw32
4598         fi
4599         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4600         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4601         LIBTARGET=i386
4602         if enabled x86_64; then
4603             LIBTARGET="i386:x86-64"
4604         elif enabled arm; then
4605             LIBTARGET=arm-wince
4606         fi
4607         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4608         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4609         shlibdir_default="$bindir_default"
4610         SLIBPREF=""
4611         SLIBSUF=".dll"
4612         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4613         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4614         dlltool="${cross_prefix}dlltool"
4615         if check_cmd lib.exe -list; then
4616             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4617             if enabled x86_64; then
4618                 LIBTARGET=x64
4619             fi
4620         elif check_cmd $dlltool --version; then
4621             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4622         fi
4623         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4624         SLIB_INSTALL_LINKS=
4625         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4626         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4627         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4628         objformat="win32"
4629         ranlib=:
4630         enable dos_paths
4631         check_ldflags -Wl,--nxcompat,--dynamicbase
4632         # Lets work around some stupidity in binutils.
4633         # ld will strip relocations from executables even though we need them
4634         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4635         # however ld then forgets what the entry point should be (oops) so we
4636         # have to manually (re)set it.
4637         if enabled x86_32; then
4638             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4639         elif enabled x86_64; then
4640             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4641             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4642             # Set image base >4GB for extra entropy with HEASLR
4643             add_ldexeflags -Wl,--image-base,0x140000000
4644             append SHFLAGS -Wl,--image-base,0x180000000
4645         fi
4646         ;;
4647     win32|win64)
4648         disable symver
4649         if enabled shared; then
4650             # Link to the import library instead of the normal static library
4651             # for shared libs.
4652             LD_LIB='%.lib'
4653             # Cannot build both shared and static libs with MSVC or icl.
4654             disable static
4655         fi
4656         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4657         shlibdir_default="$bindir_default"
4658         SLIBPREF=""
4659         SLIBSUF=".dll"
4660         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4661         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4662         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4663         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4664         SLIB_INSTALL_LINKS=
4665         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4666         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4667         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4668         objformat="win32"
4669         ranlib=:
4670         enable dos_paths
4671         ;;
4672     cygwin*)
4673         target_os=cygwin
4674         shlibdir_default="$bindir_default"
4675         SLIBPREF="cyg"
4676         SLIBSUF=".dll"
4677         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4678         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4679         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4680         SLIB_INSTALL_LINKS=
4681         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4682         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4683         objformat="win32"
4684         enable dos_paths
4685         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4686         ;;
4687     *-dos|freedos|opendos)
4688         network_extralibs="-lsocket"
4689         objformat="coff"
4690         enable dos_paths
4691         add_cppflags -U__STRICT_ANSI__
4692         ;;
4693     linux)
4694         enable dv1394
4695         enable section_data_rel_ro
4696         ;;
4697     irix*)
4698         target_os=irix
4699         ranlib="echo ignoring ranlib"
4700         ;;
4701     os/2*)
4702         strip="lxlite -CS"
4703         ln_s="cp -f"
4704         objformat="aout"
4705         add_cppflags -D_GNU_SOURCE
4706         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4707         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4708         LIBSUF="_s.a"
4709         SLIBPREF=""
4710         SLIBSUF=".dll"
4711         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4712         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4713         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4714             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4715             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4716             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4717             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4718         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4719             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4720         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4721         enable dos_paths
4722         enable_weak os2threads
4723         ;;
4724     gnu/kfreebsd)
4725         add_cppflags -D_BSD_SOURCE
4726         ;;
4727     gnu)
4728         ;;
4729     qnx)
4730         add_cppflags -D_QNX_SOURCE
4731         network_extralibs="-lsocket"
4732         ;;
4733     symbian)
4734         SLIBSUF=".dll"
4735         enable dos_paths
4736         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4737         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4738         add_ldflags -Wl,--target1-abs,--no-undefined \
4739                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4740                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4741         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4742                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4743                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4744         ;;
4745     osf1)
4746         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4747         ;;
4748     minix)
4749         ;;
4750     plan9)
4751         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4752                      -D_REENTRANT_SOURCE        \
4753                      -D_RESEARCH_SOURCE         \
4754                      -DFD_SETSIZE=96            \
4755                      -DHAVE_SOCK_OPTS
4756         add_compat strtod.o strtod=avpriv_strtod
4757         network_extralibs='-lbsd'
4758         exeobjs=compat/plan9/main.o
4759         disable ffserver
4760         cp_f='cp'
4761         ;;
4762     none)
4763         ;;
4764     *)
4765         die "Unknown OS '$target_os'."
4766         ;;
4767 esac
4768
4769 # test if creating links works
4770 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4771 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4772 mkdir "$link_dest"
4773 $ln_s "$link_dest" "$link_name"
4774 touch "$link_dest/test_file"
4775 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4776     # create link to source path
4777     [ -e src ] && rm src
4778     $ln_s "$source_path" src
4779     source_link=src
4780 else
4781     # creating directory links doesn't work
4782     # fall back to using the full source path
4783     source_link="$source_path"
4784 fi
4785 # cleanup
4786 rm -r "$link_dest"
4787 rm -r "$link_name"
4788
4789 # determine libc flavour
4790
4791 probe_libc(){
4792     pfx=$1
4793     pfx_no_=${pfx%_}
4794     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4795     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4796         eval ${pfx}libc_type=uclibc
4797         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4798     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4799         eval ${pfx}libc_type=glibc
4800         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4801     # MinGW headers can be installed on Cygwin, so check for newlib first.
4802     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4803         eval ${pfx}libc_type=newlib
4804         add_${pfx}cppflags -U__STRICT_ANSI__
4805     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4806     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4807         eval ${pfx}libc_type=mingw64
4808         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4809             add_compat msvcrt/snprintf.o
4810             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4811         fi
4812         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4813         eval test \$${pfx_no_}cc_type = "gcc" &&
4814             add_${pfx}cppflags -D__printf__=__gnu_printf__
4815     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4816          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4817         eval ${pfx}libc_type=mingw32
4818         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4819             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4820             die "ERROR: MinGW32 runtime version must be >= 3.15."
4821         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4822         eval test \$${pfx_no_}cc_type = "gcc" &&
4823             add_${pfx}cppflags -D__printf__=__gnu_printf__
4824     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4825         eval ${pfx}libc_type=msvcrt
4826         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4827             if [ "$pfx" = host_ ]; then
4828                 add_host_cppflags -Dsnprintf=_snprintf
4829             else
4830                 add_compat strtod.o strtod=avpriv_strtod
4831                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4832                                              _snprintf=avpriv_snprintf  \
4833                                              vsnprintf=avpriv_vsnprintf
4834             fi
4835         fi
4836         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4837         # 0x601 by default unless something else is set by the user.
4838         # This can easily lead to us detecting functions only present
4839         # in such new versions and producing binaries requiring windows 7.0.
4840         # Therefore explicitly set the default to XP unless the user has
4841         # set something else on the command line.
4842         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4843         # family. For these cases, configure is free to use any functions
4844         # found in the SDK headers by default. (Alternatively, we could force
4845         # _WIN32_WINNT to 0x0602 in that case.)
4846         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4847             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4848 #ifdef WINAPI_FAMILY
4849 #include <winapifamily.h>
4850 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4851 #error not desktop
4852 #endif
4853 #endif
4854 EOF
4855     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4856         eval ${pfx}libc_type=klibc
4857     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4858         eval ${pfx}libc_type=bionic
4859     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4860         eval ${pfx}libc_type=solaris
4861         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4862     fi
4863     check_${pfx}cc <<EOF
4864 #include <time.h>
4865 void *v = localtime_r;
4866 EOF
4867 test "$?" != 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
4868 #include <time.h>
4869 void *v = localtime_r;
4870 EOF
4871
4872 }
4873
4874 probe_libc
4875 test -n "$libc_type" && enable libc_$libc_type
4876 probe_libc host_
4877 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4878
4879 case $libc_type in
4880     bionic)
4881         add_compat strtod.o strtod=avpriv_strtod
4882         ;;
4883 esac
4884
4885 # hacks for compiler/libc/os combinations
4886
4887 if enabled_all tms470 libc_glibc; then
4888     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4889     add_cppflags -D__USER_LABEL_PREFIX__=
4890     add_cppflags -D__builtin_memset=memset
4891     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4892     add_cflags   -pds=48    # incompatible redefinition of macro
4893 fi
4894
4895 if enabled_all ccc libc_glibc; then
4896     add_ldflags -Wl,-z,now  # calls to libots crash without this
4897 fi
4898
4899 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4900     add_cppflags '-I\$(SRC_PATH)/compat/float'
4901
4902 esc(){
4903     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4904 }
4905
4906 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4907
4908 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4909
4910 set_default libdir
4911 : ${shlibdir_default:="$libdir"}
4912 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4913
4914 set_default $PATHS_LIST
4915 set_default nm
4916
4917 # we need to build at least one lib type
4918 if ! enabled_any static shared; then
4919     cat <<EOF
4920 At least one library type must be built.
4921 Specify --enable-static to build the static libraries or --enable-shared to
4922 build the shared libraries as well. To only build the shared libraries specify
4923 --disable-static in addition to --enable-shared.
4924 EOF
4925     exit 1;
4926 fi
4927
4928 die_license_disabled() {
4929     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4930 }
4931
4932 die_license_disabled_gpl() {
4933     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4934 }
4935
4936 die_license_disabled gpl frei0r
4937 die_license_disabled gpl libcdio
4938 die_license_disabled gpl librubberband
4939 die_license_disabled gpl libsmbclient
4940 die_license_disabled gpl libutvideo
4941 die_license_disabled gpl libvidstab
4942 die_license_disabled gpl libx264
4943 die_license_disabled gpl libx265
4944 die_license_disabled gpl libxavs
4945 die_license_disabled gpl libxvid
4946 die_license_disabled gpl x11grab
4947
4948 die_license_disabled nonfree cuda
4949 die_license_disabled nonfree libfaac
4950 die_license_disabled nonfree nvenc
4951 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4952 enabled gpl && die_license_disabled_gpl nonfree openssl
4953
4954 die_license_disabled version3 gmp
4955 die_license_disabled version3 libopencore_amrnb
4956 die_license_disabled version3 libopencore_amrwb
4957 die_license_disabled version3 libsmbclient
4958 die_license_disabled version3 libvo_amrwbenc
4959
4960 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4961
4962 disabled optimizations || check_cflags -fomit-frame-pointer
4963
4964 enable_weak_pic() {
4965     disabled pic && return
4966     enable pic
4967     add_cppflags -DPIC
4968     case "$target_os" in
4969     mingw*|cygwin*)
4970         ;;
4971     *)
4972         add_cflags -fPIC
4973         ;;
4974     esac
4975     add_asflags  -fPIC
4976 }
4977
4978 enabled pic && enable_weak_pic
4979
4980 check_cc <<EOF || die "Symbol mangling check failed."
4981 int ff_extern;
4982 EOF
4983 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4984 extern_prefix=${sym%%ff_extern*}
4985
4986 check_cc <<EOF && enable_weak inline_asm
4987 void foo(void) { __asm__ volatile ("" ::); }
4988 EOF
4989
4990 _restrict=
4991 for restrict_keyword in restrict __restrict__ __restrict; do
4992     check_cc <<EOF && _restrict=$restrict_keyword && break
4993 void foo(char * $restrict_keyword p);
4994 EOF
4995 done
4996
4997 check_cc <<EOF && enable pragma_deprecated
4998 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4999 EOF
5000
5001 check_cc <<EOF && enable attribute_packed
5002 struct { int x; } __attribute__((packed)) x;
5003 EOF
5004
5005 check_cc <<EOF && enable attribute_may_alias
5006 union { int x; } __attribute__((may_alias)) x;
5007 EOF
5008
5009 check_cc <<EOF || die "endian test failed"
5010 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5011 EOF
5012 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5013
5014 if ! enabled ppc64 || enabled bigendian; then
5015     disable vsx
5016 fi
5017
5018 check_gas() {
5019     log "check_gas using '$as' as AS"
5020     # :vararg is used on aarch64, arm and ppc altivec
5021     check_as <<EOF || return 1
5022 .macro m n, y:vararg=0
5023 \n: .int \y
5024 .endm
5025 m x
5026 EOF
5027     # .altmacro is only used in arm asm
5028     ! enabled arm || check_as <<EOF || return 1
5029 .altmacro
5030 EOF
5031     enable gnu_as
5032     return 0
5033 }
5034
5035 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5036     nogas=:
5037     enabled_any arm aarch64 && nogas=die
5038     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5039     as_noop=-v
5040
5041     case $as_type in
5042         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5043         gcc)  gaspp_as_type=gas ;;
5044         *)    gaspp_as_type=$as_type ;;
5045     esac
5046
5047     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5048
5049     test "${as#*gas-preprocessor.pl}" != "$as" ||
5050     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5051         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5052
5053     if ! check_gas ; then
5054         as=${gas:=$as}
5055         check_gas || \
5056             $nogas "GNU assembler not found, install/update gas-preprocessor"
5057     fi
5058
5059     check_as <<EOF && enable as_func
5060 .func test
5061 .endfunc
5062 EOF
5063 fi
5064
5065 check_inline_asm inline_asm_labels '"1:\n"'
5066
5067 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5068
5069 if enabled aarch64; then
5070     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5071     # internal assembler in clang 3.3 does not support this instruction
5072     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5073     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5074
5075     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5076
5077 elif enabled alpha; then
5078
5079     check_cflags -mieee
5080
5081 elif enabled arm; then
5082
5083     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5084
5085     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5086 float func(float a, float b){ return a+b; }
5087 EOF
5088
5089     enabled thumb && check_cflags -mthumb || check_cflags -marm
5090
5091     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5092         enable vfp_args
5093     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5094         enable vfp_args
5095     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5096         case "${cross_prefix:-$cc}" in
5097             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5098             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5099 __asm__ (".eabi_attribute 28, 1");
5100 int main(void) { return 0; }
5101 EOF
5102         esac
5103         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5104     fi
5105
5106     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5107     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5108     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5109     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5110     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5111     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5112     enabled setend  && check_insn setend  'setend be'
5113
5114     [ $target_os = linux ] || [ $target_os = android ] ||
5115         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5116             $ARCH_EXT_LIST_ARM
5117
5118     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5119
5120     check_as <<EOF && enable as_dn_directive
5121 ra .dn d0.i16
5122 .unreq ra
5123 EOF
5124
5125     # llvm's integrated assembler supports .object_arch from llvm 3.5
5126     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5127 .object_arch armv4
5128 EOF
5129
5130     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5131
5132 elif enabled mips; then
5133
5134     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5135     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5136     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5137
5138     # Enable minimum ISA based on selected options
5139     if enabled mips64; then
5140         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5141         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5142         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5143     else
5144         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5145         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5146         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5147         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5148     fi
5149
5150     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5151     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5152     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5153     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5154     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5155
5156 elif enabled parisc; then
5157
5158     if enabled gcc; then
5159         case $($cc -dumpversion) in
5160             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5161         esac
5162     fi
5163
5164 elif enabled ppc; then
5165
5166     enable local_aligned_8 local_aligned_16 local_aligned_32
5167
5168     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5169     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5170     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5171     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5172
5173     # AltiVec flags: The FSF version of GCC differs from the Apple version
5174     if enabled altivec; then
5175         check_cflags -maltivec -mabi=altivec &&
5176         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5177         check_cflags -faltivec
5178
5179         # check if our compiler supports Motorola AltiVec C API
5180         check_cc <<EOF || disable altivec
5181 $inc_altivec_h
5182 int main(void) {
5183     vector signed int v1 = (vector signed int) { 0 };
5184     vector signed int v2 = (vector signed int) { 1 };
5185     v1 = vec_add(v1, v2);
5186     return 0;
5187 }
5188 EOF
5189
5190         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5191     fi
5192
5193     if enabled vsx; then
5194         check_cflags -mvsx &&
5195         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5196     fi
5197
5198     if enabled power8; then
5199         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5200     fi
5201
5202 elif enabled x86; then
5203
5204     check_builtin rdtsc    intrin.h   "__rdtsc()"
5205     check_builtin mm_empty mmintrin.h "_mm_empty()"
5206
5207     enable local_aligned_8 local_aligned_16 local_aligned_32
5208
5209     # check whether EBP is available on x86
5210     # As 'i' is stored on the stack, this program will crash
5211     # if the base pointer is used to access it because the
5212     # base pointer is cleared in the inline assembly code.
5213     check_exec_crash <<EOF && enable ebp_available
5214 volatile int i=0;
5215 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5216 return i;
5217 EOF
5218
5219     # check whether EBX is available on x86
5220     check_inline_asm ebx_available '""::"b"(0)' &&
5221         check_inline_asm ebx_available '"":::"%ebx"'
5222
5223     # check whether xmm clobbers are supported
5224     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5225
5226     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5227         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5228
5229     # check whether binutils is new enough to compile SSSE3/MMXEXT
5230     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5231     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5232
5233     if ! disabled_any asm mmx yasm; then
5234         if check_cmd $yasmexe --version; then
5235             enabled x86_64 && yasm_extra="-m amd64"
5236             yasm_debug="-g dwarf2"
5237         elif check_cmd nasm -v; then
5238             yasmexe=nasm
5239             yasm_debug="-g -F dwarf"
5240             if enabled x86_64; then
5241                 case "$objformat" in
5242                     elf)   objformat=elf64 ;;
5243                     win32) objformat=win64 ;;
5244                 esac
5245             fi
5246         fi
5247
5248         YASMFLAGS="-f $objformat $yasm_extra"
5249         enabled pic               && append YASMFLAGS "-DPIC"
5250         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5251         case "$objformat" in
5252             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5253         esac
5254
5255         check_yasm "movbe ecx, [5]" && enable yasm ||
5256             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5257         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5258         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5259         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5260         check_yasm "CPU amdnop" || disable cpunop
5261     fi
5262
5263     case "$cpu" in
5264         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5265             disable fast_clz
5266         ;;
5267     esac
5268
5269 fi
5270
5271 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5272
5273 check_ldflags -Wl,--as-needed
5274 check_ldflags -Wl,-z,noexecstack
5275
5276 if check_func dlopen; then
5277     ldl=
5278 elif check_func dlopen -ldl; then
5279     ldl=-ldl
5280 fi
5281
5282 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5283 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5284 frei0r_filter_extralibs='$ldl'
5285 frei0r_src_filter_extralibs='$ldl'
5286 ladspa_filter_extralibs='$ldl'
5287 nvenc_encoder_extralibs='$ldl'
5288 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5289 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5290
5291 if ! disabled network; then
5292     check_func getaddrinfo $network_extralibs
5293     check_func inet_aton $network_extralibs
5294
5295     check_type netdb.h "struct addrinfo"
5296     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5297     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5298     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5299     check_type poll.h "struct pollfd"
5300     check_type netinet/sctp.h "struct sctp_event_subscribe"
5301     check_struct "sys/socket.h" "struct msghdr" msg_flags
5302     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5303     check_type netinet/in.h "struct sockaddr_in6"
5304     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5305     check_type "sys/types.h sys/socket.h" socklen_t
5306
5307     # Prefer arpa/inet.h over winsock2
5308     if check_header arpa/inet.h ; then
5309         check_func closesocket
5310     elif check_header winsock2.h ; then
5311         check_func_headers winsock2.h closesocket -lws2 &&
5312             network_extralibs="-lws2" ||
5313         { check_func_headers winsock2.h closesocket -lws2_32 &&
5314             network_extralibs="-lws2_32"; } || disable winsock2_h network
5315         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5316
5317         check_type ws2tcpip.h socklen_t
5318         check_type ws2tcpip.h "struct addrinfo"
5319         check_type ws2tcpip.h "struct group_source_req"
5320         check_type ws2tcpip.h "struct ip_mreq_source"
5321         check_type ws2tcpip.h "struct ipv6_mreq"
5322         check_type winsock2.h "struct pollfd"
5323         check_struct winsock2.h "struct sockaddr" sa_len
5324         check_type ws2tcpip.h "struct sockaddr_in6"
5325         check_type ws2tcpip.h "struct sockaddr_storage"
5326     else
5327         disable network
5328     fi
5329 fi
5330
5331 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5332 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5333 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5334 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5335 check_builtin sarestart signal.h "SA_RESTART"
5336 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5337 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5338 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5339 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5340
5341 case "$custom_allocator" in
5342     jemalloc)
5343         # jemalloc by default does not use a prefix
5344         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5345     ;;
5346     tcmalloc)
5347         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5348         malloc_prefix=tc_
5349     ;;
5350 esac
5351
5352 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5353 check_func  ${malloc_prefix}memalign            && enable memalign
5354 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5355
5356 check_func  access
5357 check_func  arc4random
5358 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5359 check_func  fcntl
5360 check_func  fork
5361 check_func  gethrtime
5362 check_func  getopt
5363 check_func  getrusage
5364 check_func  gettimeofday
5365 check_func  isatty
5366 check_func  mach_absolute_time
5367 check_func  mkstemp
5368 check_func  mmap
5369 check_func  mprotect
5370 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5371 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5372 check_func  sched_getaffinity
5373 check_func  setrlimit
5374 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5375 check_func  strerror_r
5376 check_func  sysconf
5377 check_func  sysctl
5378 check_func  usleep
5379
5380 check_func_headers conio.h kbhit
5381 check_func_headers io.h setmode
5382 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5383 check_func_headers stdlib.h getenv
5384 check_func_headers sys/stat.h lstat
5385
5386 check_func_headers windows.h CoTaskMemFree -lole32
5387 check_func_headers windows.h GetProcessAffinityMask
5388 check_func_headers windows.h GetProcessTimes
5389 check_func_headers windows.h GetSystemTimeAsFileTime
5390 check_func_headers windows.h MapViewOfFile
5391 check_func_headers windows.h PeekNamedPipe
5392 check_func_headers windows.h SetConsoleTextAttribute
5393 check_func_headers windows.h SetConsoleCtrlHandler
5394 check_func_headers windows.h Sleep
5395 check_func_headers windows.h VirtualAlloc
5396 check_struct windows.h "CONDITION_VARIABLE" Ptr
5397 check_func_headers glob.h glob
5398 enabled xlib &&
5399     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5400
5401 check_header AudioToolbox/AudioToolbox.h
5402 check_header direct.h
5403 check_header dirent.h
5404 check_header dlfcn.h
5405 check_header d3d11.h
5406 check_header dxva.h
5407 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5408 check_header io.h
5409 check_header libcrystalhd/libcrystalhd_if.h
5410 check_header mach/mach_time.h
5411 check_header malloc.h
5412 check_header net/udplite.h
5413 check_header poll.h
5414 check_header sys/mman.h
5415 check_header sys/param.h
5416 check_header sys/resource.h
5417 check_header sys/select.h
5418 check_header sys/time.h
5419 check_header sys/un.h
5420 check_header termios.h
5421 check_header unistd.h
5422 check_header valgrind/valgrind.h
5423 check_header vdpau/vdpau.h
5424 check_header vdpau/vdpau_x11.h
5425 check_header VideoDecodeAcceleration/VDADecoder.h
5426 check_header VideoToolbox/VideoToolbox.h
5427 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5428 check_header windows.h
5429 check_header X11/extensions/XvMClib.h
5430 check_header asm/types.h
5431
5432 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5433 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5434 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5435 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5436
5437 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5438
5439 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5440 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5441 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5442 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5443 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5444
5445 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5446 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5447
5448 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5449
5450 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5451
5452 if ! disabled w32threads && ! enabled pthreads; then
5453     check_func_headers "windows.h process.h" _beginthreadex &&
5454         enable w32threads || disable w32threads
5455     if ! enabled w32threads && enabled winrt; then
5456         check_func_headers "windows.h" CreateThread &&
5457             enable w32threads || disable w32threads
5458     fi
5459 fi
5460
5461 # check for some common methods of building with pthread support
5462 # do this before the optional library checks as some of them require pthreads
5463 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5464     enable pthreads
5465     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5466         add_cflags -pthread
5467         add_extralibs -pthread
5468     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5469         add_cflags -pthreads
5470         add_extralibs -pthreads
5471     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5472         add_cflags -ldl -pthread
5473         add_extralibs -ldl -pthread
5474     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5475         add_extralibs -lpthreadGC2
5476     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5477         :
5478     elif ! check_func pthread_join && ! check_func pthread_create; then
5479         disable pthreads
5480     fi
5481     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5482 fi
5483
5484
5485 if enabled pthreads; then
5486   check_func pthread_cancel
5487 fi
5488
5489 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5490 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5491 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5492
5493 check_lib math.h sin -lm && LIBM="-lm"
5494 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5495
5496 atan2f_args=2
5497 copysign_args=2
5498 hypot_args=2
5499 ldexpf_args=2
5500 powf_args=2
5501
5502 for func in $MATH_FUNCS; do
5503     eval check_mathfunc $func \${${func}_args:-1}
5504 done
5505
5506 for func in $COMPLEX_FUNCS; do
5507     eval check_complexfunc $func \${${func}_args:-1}
5508 done
5509
5510 # these are off by default, so fail if requested and not available
5511 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5512 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5513                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5514 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5515                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5516                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5517 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5518                                die "ERROR: CUDA not found"; }
5519 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5520 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5521 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5522 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5523 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5524 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5525 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5526 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5527                                check_lib2 "dlfcn.h" dlopen -ldl; }
5528 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5529 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5530 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5531 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5532 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5533 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5534                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5535                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5536 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5537 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5538 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5539                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5540                                  warn "using libfdk without pkg-config"; } }
5541 flite_libs="-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"
5542 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5543 enabled fontconfig        && enable libfontconfig
5544 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5545 enabled libfreetype       && require_libfreetype
5546 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5547 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5548 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5549                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5550                                done || die "ERROR: libgsm not found"; }
5551 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5552 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5553 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5554 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5555 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5556 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5557 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5558 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5559 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5560                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5561                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5562                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5563 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5564 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5565                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5566                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5567                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5568                                die "ERROR: libopenjpeg not found"; }
5569 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5570 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5571 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5572 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5573 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5574 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5575 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5576                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5577 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5578 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5579 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5580 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5581 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5582 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5583 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5584                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5585                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5586 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5587 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5588 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5589 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5590 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5591
5592 enabled libvpx            && {
5593     enabled libvpx_vp8_decoder && {
5594         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5595             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5596                 die "ERROR: libvpx decoder version must be >=0.9.1";
5597     }
5598     enabled libvpx_vp8_encoder && {
5599         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5600             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5601                 die "ERROR: libvpx encoder version must be >=0.9.7";
5602     }
5603     enabled libvpx_vp9_decoder && {
5604         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5605             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5606                 disable libvpx_vp9_decoder;
5607     }
5608     enabled libvpx_vp9_encoder && {
5609         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5610             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5611                 disable libvpx_vp9_encoder;
5612     }
5613     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5614         die "libvpx enabled but no supported decoders found"
5615     fi
5616 }
5617
5618 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5619 enabled libwebp           && {
5620     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5621     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5622 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5623                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5624                                  warn "using libx264 without pkg-config"; } } &&
5625                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5626                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5627                              { check_cpp_condition x264.h "X264_MPEG2" &&
5628                                enable libx262; }
5629 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5630                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5631                                die "ERROR: libx265 version must be >= 68."; }
5632 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5633 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5634 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5635 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5636 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5637                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5638                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5639 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5640 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5641                                 { ! enabled cross_compile && {
5642                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5643                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5644                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5645                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5646                                die "ERROR: mmal not found"; }
5647 enabled mmal &&
5648     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5649      die "ERROR: mmal firmware headers too old")
5650
5651 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5652 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5653                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5654                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5655                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5656 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5657                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5658                                die "ERROR: openal not found"; } &&
5659                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5660                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5661 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5662                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5663                                die "ERROR: opencl not found"; } &&
5664                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5665                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5666                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5667 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5668                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5669                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5670                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5671                                die "ERROR: opengl not found."
5672                              }
5673 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5674                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5675                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5676                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5677                                die "ERROR: openssl not found"; }
5678 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5679
5680 # libdc1394 check
5681 if enabled libdc1394; then
5682     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5683         enable libdc1394_2; } ||
5684     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5685         enable libdc1394_1; } ||
5686     die "ERROR: No version of libdc1394 found "
5687 fi
5688
5689 if enabled gcrypt; then
5690     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5691     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5692         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5693         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5694         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5695             die "ERROR: gcrypt not found"
5696         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5697     else
5698         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5699     fi
5700 fi
5701
5702 if ! disabled sdl; then
5703     SDL_CONFIG="${cross_prefix}sdl-config"
5704     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5705         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5706         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5707         enable sdl
5708     else
5709         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5710             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5711             sdl_libs=$("${SDL_CONFIG}" --libs)
5712             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5713             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5714             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5715             enable sdl
5716         elif enabled sdl ; then
5717             die "ERROR: SDL not found"
5718         else
5719             disable sdl
5720         fi
5721     fi
5722     if test $target_os = "mingw32"; then
5723         sdl_libs="$sdl_libs -mconsole"
5724     fi
5725 fi
5726 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5727
5728 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5729     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5730     enable securetransport; }
5731
5732 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5733                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5734
5735 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5736 enabled makeinfo \
5737     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5738     && enable makeinfo_html || disable makeinfo_html
5739 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5740 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5741 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5742 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5743
5744 check_header linux/fb.h
5745 check_header linux/videodev.h
5746 check_header linux/videodev2.h
5747 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5748
5749 check_header sys/videoio.h
5750 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5751
5752 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5753 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5754 # w32api 3.12 had it defined wrong
5755 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5756
5757 check_type "dshow.h" IBaseFilter
5758
5759 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5760 { check_header dev/bktr/ioctl_meteor.h &&
5761   check_header dev/bktr/ioctl_bt848.h; } ||
5762 { check_header machine/ioctl_meteor.h &&
5763   check_header machine/ioctl_bt848.h; } ||
5764 { check_header dev/video/meteor/ioctl_meteor.h &&
5765   check_header dev/video/bktr/ioctl_bt848.h; } ||
5766 check_header dev/ic/bt8xx.h
5767
5768 check_header sndio.h
5769 if check_struct sys/soundcard.h audio_buf_info bytes; then
5770     enable_safe sys/soundcard.h
5771 else
5772     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5773     #include <sys/soundcard.h>
5774     audio_buf_info abc;
5775 EOF
5776 fi
5777 check_header soundcard.h
5778
5779 enabled_any alsa_indev alsa_outdev &&
5780     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5781
5782 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5783     check_func jack_port_get_latency_range -ljack
5784
5785 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5786
5787 if enabled libcdio; then
5788     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5789     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5790     die "ERROR: No usable libcdio/cdparanoia found"
5791 fi
5792
5793 enabled xlib &&
5794     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5795
5796 if ! disabled libxcb; then
5797     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5798         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5799     } && disable x11grab && enable libxcb
5800
5801 if enabled libxcb; then
5802     disabled libxcb_shm || {
5803         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5804             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5805         } && check_header sys/shm.h && enable libxcb_shm; }
5806
5807     disabled libxcb_xfixes || {
5808         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5809             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5810         } && enable libxcb_xfixes; }
5811
5812     disabled libxcb_shape || {
5813         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5814             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5815         } && enable libxcb_shape; }
5816
5817     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5818     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5819 fi
5820 fi
5821
5822 if enabled x11grab; then
5823     enabled xlib || die "ERROR: Xlib not found"
5824     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5825     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5826 fi
5827
5828 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5829
5830 enabled dxva2api_h &&
5831     check_cc <<EOF && enable dxva2api_cobj
5832 #define _WIN32_WINNT 0x0600
5833 #define COBJMACROS
5834 #include <windows.h>
5835 #include <d3d9.h>
5836 #include <dxva2api.h>
5837 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5838 EOF
5839
5840 enabled vaapi &&
5841     check_lib va/va.h vaInitialize -lva ||
5842     disable vaapi
5843
5844 enabled vaapi && enabled xlib &&
5845     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5846     enable vaapi_x11
5847
5848 enabled vdpau &&
5849     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5850     disable vdpau
5851
5852 enabled vdpau && enabled xlib &&
5853     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5854     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5855     enable vdpau_x11
5856
5857 # Funny iconv installations are not unusual, so check it after all flags have been set
5858 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5859
5860 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5861
5862 # add some useful compiler flags if supported
5863 check_cflags -Wdeclaration-after-statement
5864 check_cflags -Wall
5865 check_cflags -Wdisabled-optimization
5866 check_cflags -Wpointer-arith
5867 check_cflags -Wredundant-decls
5868 check_cflags -Wwrite-strings
5869 check_cflags -Wtype-limits
5870 check_cflags -Wundef
5871 check_cflags -Wmissing-prototypes
5872 check_cflags -Wno-pointer-to-int-cast
5873 check_cflags -Wstrict-prototypes
5874 check_cflags -Wempty-body
5875 enabled extra_warnings && check_cflags -Winline
5876 enabled extra_warnings && check_cflags -Wcast-qual
5877
5878 check_disable_warning(){
5879     warning_flag=-W${1#-Wno-}
5880     test_cflags $warning_flag && add_cflags $1
5881 }
5882
5883 check_disable_warning -Wno-parentheses
5884 check_disable_warning -Wno-switch
5885 check_disable_warning -Wno-format-zero-length
5886 check_disable_warning -Wno-pointer-sign
5887 check_disable_warning -Wno-unused-const-variable
5888
5889 # add some linker flags
5890 check_ldflags -Wl,--warn-common
5891 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5892 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5893 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5894 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5895
5896 # add some strip flags
5897 # -wN '..@*' is more selective than -x, but not available everywhere.
5898 check_stripflags -wN \'..@*\' || check_stripflags -x
5899
5900 enabled neon_clobber_test &&
5901     check_ldflags -Wl,--wrap,avcodec_open2              \
5902                   -Wl,--wrap,avcodec_decode_audio4      \
5903                   -Wl,--wrap,avcodec_decode_video2      \
5904                   -Wl,--wrap,avcodec_decode_subtitle2   \
5905                   -Wl,--wrap,avcodec_encode_audio2      \
5906                   -Wl,--wrap,avcodec_encode_video2      \
5907                   -Wl,--wrap,avcodec_encode_subtitle    \
5908                   -Wl,--wrap,swr_convert                \
5909                   -Wl,--wrap,avresample_convert ||
5910     disable neon_clobber_test
5911
5912 enabled xmm_clobber_test &&
5913     check_ldflags -Wl,--wrap,avcodec_open2              \
5914                   -Wl,--wrap,avcodec_decode_audio4      \
5915                   -Wl,--wrap,avcodec_decode_video2      \
5916                   -Wl,--wrap,avcodec_decode_subtitle2   \
5917                   -Wl,--wrap,avcodec_encode_audio2      \
5918                   -Wl,--wrap,avcodec_encode_video2      \
5919                   -Wl,--wrap,avcodec_encode_subtitle    \
5920                   -Wl,--wrap,swr_convert                \
5921                   -Wl,--wrap,avresample_convert         \
5922                   -Wl,--wrap,sws_scale ||
5923     disable xmm_clobber_test
5924
5925 echo "X { local: *; };" > $TMPV
5926 if test_ldflags -Wl,--version-script,$TMPV; then
5927     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5928 elif test_ldflags -Wl,-M,$TMPV; then
5929     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5930 fi
5931
5932 check_cc <<EOF && enable symver_asm_label
5933 void ff_foo(void) __asm__ ("av_foo@VERSION");
5934 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5935 EOF
5936     check_cc <<EOF && enable symver_gnu_asm
5937 __asm__(".symver ff_foo,av_foo@VERSION");
5938 void ff_foo(void) {}
5939 EOF
5940
5941 if [ -z "$optflags" ]; then
5942     if enabled small; then
5943         optflags=$cflags_size
5944     elif enabled optimizations; then
5945         optflags=$cflags_speed
5946     else
5947         optflags=$cflags_noopt
5948     fi
5949 fi
5950
5951 check_optflags(){
5952     check_cflags "$@"
5953     enabled lto && check_ldflags "$@"
5954 }
5955
5956
5957 if enabled lto; then
5958     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5959     check_cflags  -flto
5960     check_ldflags -flto $cpuflags
5961     disable inline_asm_direct_symbol_refs
5962 fi
5963
5964 check_optflags $optflags
5965 check_optflags -fno-math-errno
5966 check_optflags -fno-signed-zeros
5967
5968 enabled ftrapv && check_cflags -ftrapv
5969
5970 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5971 int x;
5972 EOF
5973
5974
5975 if enabled icc; then
5976     # Just warnings, no remarks
5977     check_cflags -w1
5978     # -wd: Disable following warnings
5979     # 144, 167, 556: -Wno-pointer-sign
5980     # 188: enumerated type mixed with another type
5981     # 1292: attribute "foo" ignored
5982     # 1419: external declaration in primary source file
5983     # 10006: ignoring unknown option -fno-signed-zeros
5984     # 10148: ignoring unknown option -Wno-parentheses
5985     # 10156: ignoring option '-W'; no argument required
5986     # 13200: No EMMS instruction before call to function
5987     # 13203: No EMMS instruction before return from function
5988     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5989     # 11030: Warning unknown option --as-needed
5990     # 10156: ignoring option '-export'; no argument required
5991     check_ldflags -wd10156,11030
5992     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5993     enable ebp_available
5994     # The test above does not test linking
5995     enabled lto && disable symver_asm_label
5996     if enabled x86_32; then
5997         icc_version=$($cc -dumpversion)
5998         test ${icc_version%%.*} -ge 11 &&
5999             check_cflags -falign-stack=maintain-16-byte ||
6000             disable aligned_stack
6001     fi
6002 elif enabled ccc; then
6003     # disable some annoying warnings
6004     add_cflags -msg_disable bitnotint
6005     add_cflags -msg_disable mixfuncvoid
6006     add_cflags -msg_disable nonstandcast
6007     add_cflags -msg_disable unsupieee
6008 elif enabled gcc; then
6009     case $gcc_basever in
6010         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
6011         4.*)                 check_optflags -fno-tree-vectorize ;;
6012         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
6013     esac
6014     check_cflags -Werror=format-security
6015     check_cflags -Werror=implicit-function-declaration
6016     check_cflags -Werror=missing-prototypes
6017     check_cflags -Werror=return-type
6018     check_cflags -Werror=vla
6019     check_cflags -Wformat
6020     check_cflags -fdiagnostics-color=auto
6021     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6022 elif enabled llvm_gcc; then
6023     check_cflags -mllvm -stack-alignment=16
6024 elif enabled clang; then
6025     check_cflags -mllvm -stack-alignment=16
6026     check_cflags -Qunused-arguments
6027     check_cflags -Werror=implicit-function-declaration
6028     check_cflags -Werror=missing-prototypes
6029     check_cflags -Werror=return-type
6030 elif enabled cparser; then
6031     add_cflags -Wno-missing-variable-declarations
6032     add_cflags -Wno-empty-statement
6033 elif enabled armcc; then
6034     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6035     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6036     # 2523: use of inline assembly is deprecated
6037     add_cflags -W${armcc_opt},--diag_suppress=2523
6038     add_cflags -W${armcc_opt},--diag_suppress=1207
6039     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6040     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6041     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6042     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6043 elif enabled tms470; then
6044     add_cflags -pds=824 -pds=837
6045     disable inline_asm
6046 elif enabled pathscale; then
6047     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6048 elif enabled_any msvc icl; then
6049     enabled x86_32 && disable aligned_stack
6050     enabled_all x86_32 debug && add_cflags -Oy-
6051     enabled debug && add_ldflags -debug
6052     enable pragma_deprecated
6053     if enabled icl; then
6054         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6055         # (correctly) on icl 13.x.
6056         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6057             add_cflags -Qansi-alias
6058         # Some inline asm is not compilable in debug
6059         if enabled debug; then
6060             disable ebp_available
6061             disable ebx_available
6062         fi
6063     fi
6064     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6065     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6066     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6067     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6068     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6069     # MSVC 2013 and newer can handle it fine.
6070     # If this declspec fails, force including stdlib.h before the restrict redefinition
6071     # happens in config.h.
6072     if [ $_restrict != restrict ]; then
6073         check_cc <<EOF || add_cflags -FIstdlib.h
6074 __declspec($_restrict) void* foo(int);
6075 EOF
6076     fi
6077     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6078 fi
6079
6080 for pfx in "" host_; do
6081     varname=${pfx%_}cc_type
6082     eval "type=\$$varname"
6083     if [ $type = "msvc" ]; then
6084         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6085 static inline int foo(int a) { return a; }
6086 EOF
6087     fi
6088 done
6089
6090 case $as_type in
6091     clang)
6092         add_asflags -Qunused-arguments
6093     ;;
6094 esac
6095
6096 case $ld_type in
6097     clang)
6098         check_ldflags -Qunused-arguments
6099     ;;
6100 esac
6101
6102 case $target_os in
6103     osf1)
6104         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6105     ;;
6106     plan9)
6107         add_cppflags -Dmain=plan9_main
6108     ;;
6109 esac
6110
6111 enable frame_thread_encoder
6112
6113 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6114
6115 check_deps $CONFIG_LIST       \
6116            $CONFIG_EXTRA      \
6117            $HAVE_LIST         \
6118            $ALL_COMPONENTS    \
6119
6120 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"
6121
6122
6123 if test $target_os = "haiku"; then
6124     disable memalign
6125     disable posix_memalign
6126 fi
6127
6128 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6129     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6130     enable dxva2_lib
6131
6132 ! enabled_any memalign posix_memalign aligned_malloc &&
6133     enabled simd_align_16 && enable memalign_hack
6134
6135 # add_dep lib dep
6136 # -> enable ${lib}_deps_${dep}
6137 # -> add $dep to ${lib}_deps only once
6138 add_dep() {
6139     lib=$1
6140     dep=$2
6141     enabled "${lib}_deps_${dep}" && return 0
6142     enable  "${lib}_deps_${dep}"
6143     prepend "${lib}_deps" $dep
6144 }
6145
6146 # merge deps lib components
6147 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6148 merge_deps() {
6149     lib=$1
6150     shift
6151     for comp in $*; do
6152         enabled $comp || continue
6153         eval "dep=\"\$${comp}_deps\""
6154         for d in $dep; do
6155             add_dep $lib $d
6156         done
6157     done
6158 }
6159
6160 merge_deps libavfilter $FILTER_LIST
6161
6162 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6163
6164 for thread in $THREADS_LIST; do
6165     if enabled $thread; then
6166         test -n "$thread_type" &&
6167             die "ERROR: Only one thread type must be selected." ||
6168             thread_type="$thread"
6169     fi
6170 done
6171
6172 enabled zlib && add_cppflags -DZLIB_CONST
6173
6174 # conditional library dependencies, in linking order
6175 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6176 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6177 enabled aresample_filter    && prepend avfilter_deps "swresample"
6178 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6179 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6180 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6181 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6182 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6183 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6184 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6185 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6186 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6187 enabled pan_filter          && prepend avfilter_deps "swresample"
6188 enabled pp_filter           && prepend avfilter_deps "postproc"
6189 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6190 enabled resample_filter && prepend avfilter_deps "avresample"
6191 enabled sab_filter          && prepend avfilter_deps "swscale"
6192 enabled scale_filter    && prepend avfilter_deps "swscale"
6193 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6194 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6195 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6196 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6197 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6198 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6199 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6200 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6201 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6202
6203 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6204
6205 enabled opus_decoder    && prepend avcodec_deps "swresample"
6206
6207 expand_deps(){
6208     lib_deps=${1}_deps
6209     eval "deps=\$$lib_deps"
6210     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6211     unique $lib_deps
6212 }
6213
6214 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6215 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6216
6217 map 'expand_deps $v' $LIBRARY_LIST
6218
6219 echo "install prefix            $prefix"
6220 echo "source path               $source_path"
6221 echo "C compiler                $cc"
6222 echo "C library                 $libc_type"
6223 if test "$host_cc" != "$cc"; then
6224     echo "host C compiler           $host_cc"
6225     echo "host C library            $host_libc_type"
6226 fi
6227 echo "ARCH                      $arch ($cpu)"
6228 if test "$build_suffix" != ""; then
6229     echo "build suffix              $build_suffix"
6230 fi
6231 if test "$progs_suffix" != ""; then
6232     echo "progs suffix              $progs_suffix"
6233 fi
6234 if test "$extra_version" != ""; then
6235     echo "version string suffix     $extra_version"
6236 fi
6237 echo "big-endian                ${bigendian-no}"
6238 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6239 if enabled x86; then
6240     echo "${yasmexe}                      ${yasm-no}"
6241     echo "MMX enabled               ${mmx-no}"
6242     echo "MMXEXT enabled            ${mmxext-no}"
6243     echo "3DNow! enabled            ${amd3dnow-no}"
6244     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6245     echo "SSE enabled               ${sse-no}"
6246     echo "SSSE3 enabled             ${ssse3-no}"
6247     echo "AESNI enabled             ${aesni-no}"
6248     echo "AVX enabled               ${avx-no}"
6249     echo "XOP enabled               ${xop-no}"
6250     echo "FMA3 enabled              ${fma3-no}"
6251     echo "FMA4 enabled              ${fma4-no}"
6252     echo "i686 features enabled     ${i686-no}"
6253     echo "CMOV is fast              ${fast_cmov-no}"
6254     echo "EBX available             ${ebx_available-no}"
6255     echo "EBP available             ${ebp_available-no}"
6256 fi
6257 if enabled aarch64; then
6258     echo "NEON enabled              ${neon-no}"
6259     echo "VFP enabled               ${vfp-no}"
6260 fi
6261 if enabled arm; then
6262     echo "ARMv5TE enabled           ${armv5te-no}"
6263     echo "ARMv6 enabled             ${armv6-no}"
6264     echo "ARMv6T2 enabled           ${armv6t2-no}"
6265     echo "VFP enabled               ${vfp-no}"
6266     echo "NEON enabled              ${neon-no}"
6267     echo "THUMB enabled             ${thumb-no}"
6268 fi
6269 if enabled mips; then
6270     echo "MIPS FPU enabled          ${mipsfpu-no}"
6271     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6272     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6273     echo "MIPS MSA enabled          ${msa-no}"
6274     echo "LOONGSON MMI enabled      ${mmi-no}"
6275 fi
6276 if enabled ppc; then
6277     echo "AltiVec enabled           ${altivec-no}"
6278     echo "VSX enabled               ${vsx-no}"
6279     echo "POWER8 enabled            ${power8-no}"
6280     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6281     echo "dcbzl available           ${dcbzl-no}"
6282 fi
6283 echo "debug symbols             ${debug-no}"
6284 echo "strip symbols             ${stripping-no}"
6285 echo "optimize for size         ${small-no}"
6286 echo "optimizations             ${optimizations-no}"
6287 echo "static                    ${static-no}"
6288 echo "shared                    ${shared-no}"
6289 echo "postprocessing support    ${postproc-no}"
6290 echo "new filter support        ${avfilter-no}"
6291 echo "network support           ${network-no}"
6292 echo "threading support         ${thread_type-no}"
6293 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6294 echo "SDL support               ${sdl-no}"
6295 echo "opencl enabled            ${opencl-no}"
6296 echo "JNI support               ${jni-no}"
6297 echo "texi2html enabled         ${texi2html-no}"
6298 echo "perl enabled              ${perl-no}"
6299 echo "pod2man enabled           ${pod2man-no}"
6300 echo "makeinfo enabled          ${makeinfo-no}"
6301 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6302 test -n "$random_seed" &&
6303     echo "random seed               ${random_seed}"
6304 echo
6305
6306 echo "Enabled programs:"
6307 print_enabled '' $PROGRAM_LIST | print_in_columns
6308 echo
6309
6310 echo "External libraries:"
6311 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6312 echo
6313
6314 echo "Libraries:"
6315 print_enabled '' $LIBRARY_LIST | print_in_columns
6316 echo
6317
6318 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6319     echo "Enabled ${type}s:"
6320     eval list=\$$(toupper $type)_LIST
6321     print_enabled '_*' $list | print_in_columns
6322     echo
6323 done
6324
6325 license="LGPL version 2.1 or later"
6326 if enabled nonfree; then
6327     license="nonfree and unredistributable"
6328 elif enabled gplv3; then
6329     license="GPL version 3 or later"
6330 elif enabled lgplv3; then
6331     license="LGPL version 3 or later"
6332 elif enabled gpl; then
6333     license="GPL version 2 or later"
6334 fi
6335
6336 echo "License: $license"
6337
6338 echo "Creating config.mak, config.h, and doc/config.texi..."
6339
6340 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6341
6342 enabled stripping || strip="echo skipping strip"
6343
6344 config_files="$TMPH config.mak doc/config.texi"
6345
6346 cat > config.mak <<EOF
6347 # Automatically generated by configure - do not modify!
6348 ifndef FFMPEG_CONFIG_MAK
6349 FFMPEG_CONFIG_MAK=1
6350 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6351 prefix=$prefix
6352 LIBDIR=\$(DESTDIR)$libdir
6353 SHLIBDIR=\$(DESTDIR)$shlibdir
6354 INCDIR=\$(DESTDIR)$incdir
6355 BINDIR=\$(DESTDIR)$bindir
6356 DATADIR=\$(DESTDIR)$datadir
6357 DOCDIR=\$(DESTDIR)$docdir
6358 MANDIR=\$(DESTDIR)$mandir
6359 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6360 INSTALL_NAME_DIR=$install_name_dir
6361 SRC_PATH=$source_path
6362 SRC_LINK=$source_link
6363 ifndef MAIN_MAKEFILE
6364 SRC_PATH:=\$(SRC_PATH:.%=..%)
6365 endif
6366 CC_IDENT=$cc_ident
6367 ARCH=$arch
6368 INTRINSICS=$intrinsics
6369 CC=$cc
6370 CXX=$cxx
6371 AS=$as
6372 OBJCC=$objcc
6373 LD=$ld
6374 DEPCC=$dep_cc
6375 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6376 DEPAS=$as
6377 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6378 YASM=$yasmexe
6379 DEPYASM=$yasmexe
6380 AR=$ar
6381 ARFLAGS=$arflags
6382 AR_O=$ar_o
6383 RANLIB=$ranlib
6384 STRIP=$strip
6385 CP=cp -p
6386 LN_S=$ln_s
6387 CPPFLAGS=$CPPFLAGS
6388 CFLAGS=$CFLAGS
6389 CXXFLAGS=$CXXFLAGS
6390 OBJCFLAGS=$OBJCFLAGS
6391 ASFLAGS=$ASFLAGS
6392 AS_C=$AS_C
6393 AS_O=$AS_O
6394 OBJCC_C=$OBJCC_C
6395 OBJCC_E=$OBJCC_E
6396 OBJCC_O=$OBJCC_O
6397 CC_C=$CC_C
6398 CC_E=$CC_E
6399 CC_O=$CC_O
6400 CXX_C=$CXX_C
6401 CXX_O=$CXX_O
6402 LD_O=$LD_O
6403 LD_LIB=$LD_LIB
6404 LD_PATH=$LD_PATH
6405 DLLTOOL=$dlltool
6406 WINDRES=$windres
6407 DEPWINDRES=$dep_cc
6408 DOXYGEN=$doxygen
6409 LDFLAGS=$LDFLAGS
6410 LDEXEFLAGS=$LDEXEFLAGS
6411 LDLIBFLAGS=$LDLIBFLAGS
6412 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6413 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6414 YASMFLAGS=$YASMFLAGS
6415 BUILDSUF=$build_suffix
6416 PROGSSUF=$progs_suffix
6417 FULLNAME=$FULLNAME
6418 LIBPREF=$LIBPREF
6419 LIBSUF=$LIBSUF
6420 LIBNAME=$LIBNAME
6421 SLIBPREF=$SLIBPREF
6422 SLIBSUF=$SLIBSUF
6423 EXESUF=$EXESUF
6424 EXTRA_VERSION=$extra_version
6425 CCDEP=$CCDEP
6426 CXXDEP=$CXXDEP
6427 CCDEP_FLAGS=$CCDEP_FLAGS
6428 ASDEP=$ASDEP
6429 ASDEP_FLAGS=$ASDEP_FLAGS
6430 CC_DEPFLAGS=$CC_DEPFLAGS
6431 AS_DEPFLAGS=$AS_DEPFLAGS
6432 HOSTCC=$host_cc
6433 HOSTLD=$host_ld
6434 HOSTCFLAGS=$host_cflags
6435 HOSTCPPFLAGS=$host_cppflags
6436 HOSTEXESUF=$HOSTEXESUF
6437 HOSTLDFLAGS=$host_ldflags
6438 HOSTLIBS=$host_libs
6439 DEPHOSTCC=$host_cc
6440 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6441 HOSTCCDEP=$HOSTCCDEP
6442 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6443 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6444 HOSTCC_C=$HOSTCC_C
6445 HOSTCC_O=$HOSTCC_O
6446 HOSTLD_O=$HOSTLD_O
6447 TARGET_EXEC=$target_exec $target_exec_args
6448 TARGET_PATH=$target_path
6449 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6450 CFLAGS-ffplay=$sdl_cflags
6451 ZLIB=$($ldflags_filter -lz)
6452 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6453 EXTRALIBS=$extralibs
6454 COMPAT_OBJS=$compat_objs
6455 EXEOBJS=$exeobjs
6456 INSTALL=$install
6457 LIBTARGET=${LIBTARGET}
6458 SLIBNAME=${SLIBNAME}
6459 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6460 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6461 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6462 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6463 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6464 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6465 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6466 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6467 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6468 NOREDZONE_FLAGS=$noredzone_flags
6469 EOF
6470
6471 get_version(){
6472     lcname=lib${1}
6473     name=$(toupper $lcname)
6474     file=$source_path/$lcname/version.h
6475     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6476     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6477     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6478     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6479     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6480     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6481 }
6482
6483 map 'get_version $v' $LIBRARY_LIST
6484
6485 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6486
6487 print_program_libs(){
6488     eval "program_libs=\$${1}_libs"
6489     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6490 }
6491
6492 map 'print_program_libs $v' $PROGRAM_LIST
6493
6494 cat > $TMPH <<EOF
6495 /* Automatically generated by configure - do not modify! */
6496 #ifndef FFMPEG_CONFIG_H
6497 #define FFMPEG_CONFIG_H
6498 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6499 #define FFMPEG_LICENSE "$(c_escape $license)"
6500 #define CONFIG_THIS_YEAR 2016
6501 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6502 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6503 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6504 #define av_restrict $_restrict
6505 #define EXTERN_PREFIX "${extern_prefix}"
6506 #define EXTERN_ASM ${extern_prefix}
6507 #define BUILDSUF "$build_suffix"
6508 #define SLIBSUF "$SLIBSUF"
6509 #define HAVE_MMX2 HAVE_MMXEXT
6510 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6511 EOF
6512
6513 test -n "$assert_level" &&
6514     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6515
6516 test -n "$malloc_prefix" &&
6517     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6518
6519 if enabled yasm; then
6520     append config_files $TMPASM
6521     printf '' >$TMPASM
6522 fi
6523
6524 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6525
6526
6527 mkdir -p doc
6528 mkdir -p tests
6529 mkdir -p tests/api
6530 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6531
6532 print_config ARCH_   "$config_files" $ARCH_LIST
6533 print_config HAVE_   "$config_files" $HAVE_LIST
6534 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6535                                      $CONFIG_EXTRA      \
6536                                      $ALL_COMPONENTS    \
6537
6538 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6539 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6540
6541 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6542 cp_if_changed $TMPH config.h
6543 touch .config
6544
6545 enabled yasm && cp_if_changed $TMPASM config.asm
6546
6547 cat > $TMPH <<EOF
6548 /* Generated by ffconf */
6549 #ifndef AVUTIL_AVCONFIG_H
6550 #define AVUTIL_AVCONFIG_H
6551 EOF
6552
6553 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6554
6555 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6556
6557 cp_if_changed $TMPH libavutil/avconfig.h
6558
6559 if test -n "$WARNINGS"; then
6560     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6561     enabled fatal_warnings && exit 1
6562 fi
6563
6564 # build pkg-config files
6565
6566 lib_version(){
6567     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6568 }
6569
6570 pkgconfig_generate(){
6571     name=$1
6572     shortname=${name#lib}${build_suffix}
6573     comment=$2
6574     version=$3
6575     libs=$4
6576     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6577     requires=${requires%, }
6578     enabled ${name#lib} || return 0
6579     mkdir -p $name
6580     cat <<EOF > $name/$name${build_suffix}.pc
6581 prefix=$prefix
6582 exec_prefix=\${prefix}
6583 libdir=$libdir
6584 includedir=$incdir
6585
6586 Name: $name
6587 Description: $comment
6588 Version: $version
6589 Requires: $(enabled shared || echo $requires)
6590 Requires.private: $(enabled shared && echo $requires)
6591 Conflicts:
6592 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6593 Libs.private: $(enabled shared && echo $libs)
6594 Cflags: -I\${includedir}
6595 EOF
6596
6597 mkdir -p doc/examples/pc-uninstalled
6598 includedir=${source_path}
6599 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6600     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6601 prefix=
6602 exec_prefix=
6603 libdir=\${pcfiledir}/../../../$name
6604 includedir=${includedir}
6605
6606 Name: $name
6607 Description: $comment
6608 Version: $version
6609 Requires: $requires
6610 Conflicts:
6611 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6612 Cflags: -I\${includedir}
6613 EOF
6614 }
6615
6616 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6617 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6618 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6619 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6620 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6621 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6622 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6623 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6624 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"