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 ac3_at_decoder_select="ac3_parser"
2651 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2652 alac_at_decoder_deps="audiotoolbox"
2653 amr_nb_at_decoder_deps="audiotoolbox"
2654 eac3_at_decoder_deps="audiotoolbox"
2655 eac3_at_decoder_select="ac3_parser"
2656 gsm_ms_at_decoder_deps="audiotoolbox"
2657 ilbc_at_decoder_deps="audiotoolbox"
2658 mp1_at_decoder_deps="audiotoolbox"
2659 mp2_at_decoder_deps="audiotoolbox"
2660 mp3_at_decoder_deps="audiotoolbox"
2661 pcm_alaw_at_decoder_deps="audiotoolbox"
2662 pcm_mulaw_at_decoder_deps="audiotoolbox"
2663 qdmc_at_decoder_deps="audiotoolbox"
2664 qdm2_at_decoder_deps="audiotoolbox"
2665 aac_at_encoder_deps="audiotoolbox"
2666 aac_at_encoder_select="audio_frame_queue"
2667 alac_at_encoder_deps="audiotoolbox"
2668 alac_at_encoder_select="audio_frame_queue"
2669 ilbc_at_encoder_deps="audiotoolbox"
2670 ilbc_at_encoder_select="audio_frame_queue"
2671 pcm_alaw_at_encoder_deps="audiotoolbox"
2672 pcm_alaw_at_encoder_select="audio_frame_queue"
2673 pcm_mulaw_at_encoder_deps="audiotoolbox"
2674 pcm_mulaw_at_encoder_select="audio_frame_queue"
2675 chromaprint_muxer_deps="chromaprint"
2676 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2677 libcelt_decoder_deps="libcelt"
2678 libfaac_encoder_deps="libfaac"
2679 libfaac_encoder_select="audio_frame_queue"
2680 libfdk_aac_decoder_deps="libfdk_aac"
2681 libfdk_aac_encoder_deps="libfdk_aac"
2682 libfdk_aac_encoder_select="audio_frame_queue"
2683 libgme_demuxer_deps="libgme"
2684 libgsm_decoder_deps="libgsm"
2685 libgsm_encoder_deps="libgsm"
2686 libgsm_ms_decoder_deps="libgsm"
2687 libgsm_ms_encoder_deps="libgsm"
2688 libilbc_decoder_deps="libilbc"
2689 libilbc_encoder_deps="libilbc"
2690 libkvazaar_encoder_deps="libkvazaar"
2691 libmodplug_demuxer_deps="libmodplug"
2692 libmp3lame_encoder_deps="libmp3lame"
2693 libmp3lame_encoder_select="audio_frame_queue"
2694 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2695 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2696 libopencore_amrnb_encoder_select="audio_frame_queue"
2697 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2698 libopenh264_encoder_deps="libopenh264"
2699 libopenjpeg_decoder_deps="libopenjpeg"
2700 libopenjpeg_encoder_deps="libopenjpeg"
2701 libopus_decoder_deps="libopus"
2702 libopus_encoder_deps="libopus"
2703 libopus_encoder_select="audio_frame_queue"
2704 libschroedinger_decoder_deps="libschroedinger"
2705 libschroedinger_encoder_deps="libschroedinger"
2706 libshine_encoder_deps="libshine"
2707 libshine_encoder_select="audio_frame_queue"
2708 libspeex_decoder_deps="libspeex"
2709 libspeex_encoder_deps="libspeex"
2710 libspeex_encoder_select="audio_frame_queue"
2711 libtheora_encoder_deps="libtheora"
2712 libtwolame_encoder_deps="libtwolame"
2713 libutvideo_decoder_deps="libutvideo"
2714 libutvideo_encoder_deps="libutvideo"
2715 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2716 libvorbis_decoder_deps="libvorbis"
2717 libvorbis_encoder_deps="libvorbis"
2718 libvorbis_encoder_select="audio_frame_queue"
2719 libvpx_vp8_decoder_deps="libvpx"
2720 libvpx_vp8_encoder_deps="libvpx"
2721 libvpx_vp9_decoder_deps="libvpx"
2722 libvpx_vp9_encoder_deps="libvpx"
2723 libwavpack_encoder_deps="libwavpack"
2724 libwebp_encoder_deps="libwebp"
2725 libwebp_anim_encoder_deps="libwebp"
2726 libx262_encoder_deps="libx262"
2727 libx264_encoder_deps="libx264"
2728 libx264rgb_encoder_deps="libx264"
2729 libx264rgb_encoder_select="libx264_encoder"
2730 libx265_encoder_deps="libx265"
2731 libxavs_encoder_deps="libxavs"
2732 libxvid_encoder_deps="libxvid"
2733 libzvbi_teletext_decoder_deps="libzvbi"
2734 nvenc_encoder_deps="nvenc"
2735 nvenc_h264_encoder_deps="nvenc"
2736 nvenc_hevc_encoder_deps="nvenc"
2737 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2738 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2739 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2740 videotoolbox_encoder_suggest="vda_framework"
2741
2742 # demuxers / muxers
2743 ac3_demuxer_select="ac3_parser"
2744 asf_demuxer_select="riffdec"
2745 asf_o_demuxer_select="riffdec"
2746 asf_muxer_select="riffenc"
2747 asf_stream_muxer_select="asf_muxer"
2748 avi_demuxer_select="iso_media riffdec exif"
2749 avi_muxer_select="riffenc"
2750 avisynth_demuxer_deps="avisynth"
2751 avisynth_demuxer_select="riffdec"
2752 caf_demuxer_select="iso_media riffdec"
2753 dash_muxer_select="mp4_muxer"
2754 dirac_demuxer_select="dirac_parser"
2755 dts_demuxer_select="dca_parser"
2756 dtshd_demuxer_select="dca_parser"
2757 dv_demuxer_select="dvprofile"
2758 dv_muxer_select="dvprofile"
2759 dxa_demuxer_select="riffdec"
2760 eac3_demuxer_select="ac3_parser"
2761 f4v_muxer_select="mov_muxer"
2762 flac_demuxer_select="flac_parser"
2763 hds_muxer_select="flv_muxer"
2764 hls_muxer_select="mpegts_muxer"
2765 image2_alias_pix_demuxer_select="image2_demuxer"
2766 image2_brender_pix_demuxer_select="image2_demuxer"
2767 ipod_muxer_select="mov_muxer"
2768 ismv_muxer_select="mov_muxer"
2769 libnut_demuxer_deps="libnut"
2770 libnut_muxer_deps="libnut"
2771 matroska_audio_muxer_select="matroska_muxer"
2772 matroska_demuxer_select="iso_media riffdec"
2773 matroska_demuxer_suggest="bzlib lzo zlib"
2774 matroska_muxer_select="iso_media riffenc"
2775 mmf_muxer_select="riffenc"
2776 mov_demuxer_select="iso_media riffdec"
2777 mov_demuxer_suggest="zlib"
2778 mov_muxer_select="iso_media riffenc rtpenc_chain"
2779 mp3_demuxer_select="mpegaudio_parser"
2780 mp4_muxer_select="mov_muxer"
2781 mpegts_demuxer_select="iso_media"
2782 mpegts_muxer_select="adts_muxer latm_muxer"
2783 mpegtsraw_demuxer_select="mpegts_demuxer"
2784 mxf_d10_muxer_select="mxf_muxer"
2785 mxf_opatom_muxer_select="mxf_muxer"
2786 nut_muxer_select="riffenc"
2787 nuv_demuxer_select="riffdec"
2788 oga_muxer_select="ogg_muxer"
2789 ogg_demuxer_select="dirac_parse"
2790 opus_muxer_select="ogg_muxer"
2791 psp_muxer_select="mov_muxer"
2792 rtp_demuxer_select="sdp_demuxer"
2793 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2794 rtsp_demuxer_select="http_protocol rtpdec"
2795 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2796 sap_demuxer_select="sdp_demuxer"
2797 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2798 sdp_demuxer_select="rtpdec"
2799 smoothstreaming_muxer_select="ismv_muxer"
2800 spdif_muxer_select="aac_parser"
2801 spx_muxer_select="ogg_muxer"
2802 swf_demuxer_suggest="zlib"
2803 tak_demuxer_select="tak_parser"
2804 tg2_muxer_select="mov_muxer"
2805 tgp_muxer_select="mov_muxer"
2806 vobsub_demuxer_select="mpegps_demuxer"
2807 w64_demuxer_select="wav_demuxer"
2808 w64_muxer_select="wav_muxer"
2809 wav_demuxer_select="riffdec"
2810 wav_muxer_select="riffenc"
2811 webm_muxer_select="iso_media riffenc"
2812 webm_dash_manifest_demuxer_select="matroska_demuxer"
2813 wtv_demuxer_select="mpegts_demuxer riffdec"
2814 wtv_muxer_select="mpegts_muxer riffenc"
2815 xmv_demuxer_select="riffdec"
2816 xwma_demuxer_select="riffdec"
2817
2818 # indevs / outdevs
2819 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2820 alsa_outdev_deps="alsa_asoundlib_h"
2821 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2822 avfoundation_indev_select="avfoundation"
2823 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2824 caca_outdev_deps="libcaca"
2825 decklink_indev_deps="decklink pthreads"
2826 decklink_indev_extralibs="-lstdc++"
2827 decklink_outdev_deps="decklink pthreads"
2828 decklink_outdev_extralibs="-lstdc++"
2829 dshow_indev_deps="IBaseFilter"
2830 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2831 dv1394_indev_deps="dv1394"
2832 dv1394_indev_select="dv_demuxer"
2833 fbdev_indev_deps="linux_fb_h"
2834 fbdev_outdev_deps="linux_fb_h"
2835 gdigrab_indev_deps="CreateDIBSection"
2836 gdigrab_indev_extralibs="-lgdi32"
2837 gdigrab_indev_select="bmp_decoder"
2838 iec61883_indev_deps="libiec61883"
2839 jack_indev_deps="jack_jack_h"
2840 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2841 lavfi_indev_deps="avfilter"
2842 libcdio_indev_deps="libcdio"
2843 libdc1394_indev_deps="libdc1394"
2844 libv4l2_indev_deps="libv4l2"
2845 openal_indev_deps="openal"
2846 opengl_outdev_deps="opengl"
2847 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2848 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2849 pulse_indev_deps="libpulse"
2850 pulse_outdev_deps="libpulse"
2851 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2852 qtkit_indev_select="qtkit"
2853 sdl_outdev_deps="sdl"
2854 sndio_indev_deps="sndio_h"
2855 sndio_outdev_deps="sndio_h"
2856 v4l_indev_deps="linux_videodev_h"
2857 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2858 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2859 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2860 vfwcap_indev_extralibs="-lavicap32"
2861 x11grab_indev_deps="x11grab"
2862 x11grab_xcb_indev_deps="libxcb"
2863 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2864 xv_outdev_extralibs="-lXv -lX11 -lXext"
2865
2866 # protocols
2867 async_protocol_deps="threads"
2868 bluray_protocol_deps="libbluray"
2869 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2870 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2871 ffrtmpcrypt_protocol_select="tcp_protocol"
2872 ffrtmphttp_protocol_deps="!librtmp_protocol"
2873 ffrtmphttp_protocol_select="http_protocol"
2874 ftp_protocol_select="tcp_protocol"
2875 gopher_protocol_select="network"
2876 http_protocol_select="tcp_protocol"
2877 httpproxy_protocol_select="tcp_protocol"
2878 https_protocol_select="tls_protocol"
2879 icecast_protocol_select="http_protocol"
2880 librtmp_protocol_deps="librtmp"
2881 librtmpe_protocol_deps="librtmp"
2882 librtmps_protocol_deps="librtmp"
2883 librtmpt_protocol_deps="librtmp"
2884 librtmpte_protocol_deps="librtmp"
2885 libsmbclient_protocol_deps="libsmbclient gplv3"
2886 libssh_protocol_deps="libssh"
2887 mmsh_protocol_select="http_protocol"
2888 mmst_protocol_select="network"
2889 rtmp_protocol_deps="!librtmp_protocol"
2890 rtmp_protocol_select="tcp_protocol"
2891 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2892 rtmps_protocol_deps="!librtmp_protocol"
2893 rtmps_protocol_select="tls_protocol"
2894 rtmpt_protocol_select="ffrtmphttp_protocol"
2895 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2896 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2897 rtp_protocol_select="udp_protocol"
2898 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2899 sctp_protocol_select="network"
2900 srtp_protocol_select="rtp_protocol"
2901 tcp_protocol_select="network"
2902 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2903 tls_gnutls_protocol_select="tcp_protocol"
2904 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2905 tls_openssl_protocol_select="tcp_protocol"
2906 tls_schannel_protocol_deps="schannel"
2907 tls_schannel_protocol_select="tcp_protocol"
2908 tls_securetransport_protocol_deps="securetransport"
2909 tls_securetransport_protocol_select="tcp_protocol"
2910 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2911 udp_protocol_select="network"
2912 udplite_protocol_select="network"
2913 unix_protocol_deps="sys_un_h"
2914 unix_protocol_select="network"
2915
2916 # filters
2917 afftfilt_filter_deps="avcodec"
2918 afftfilt_filter_select="fft"
2919 amovie_filter_deps="avcodec avformat"
2920 aresample_filter_deps="swresample"
2921 ass_filter_deps="libass"
2922 asyncts_filter_deps="avresample"
2923 atempo_filter_deps="avcodec"
2924 atempo_filter_select="rdft"
2925 azmq_filter_deps="libzmq"
2926 blackframe_filter_deps="gpl"
2927 boxblur_filter_deps="gpl"
2928 bs2b_filter_deps="libbs2b"
2929 colormatrix_filter_deps="gpl"
2930 cover_rect_filter_deps="avcodec avformat gpl"
2931 cropdetect_filter_deps="gpl"
2932 delogo_filter_deps="gpl"
2933 deshake_filter_select="pixelutils"
2934 drawtext_filter_deps="libfreetype"
2935 ebur128_filter_deps="gpl"
2936 eq_filter_deps="gpl"
2937 fftfilt_filter_deps="avcodec"
2938 fftfilt_filter_select="rdft"
2939 find_rect_filter_deps="avcodec avformat gpl"
2940 firequalizer_filter_deps="avcodec"
2941 firequalizer_filter_select="rdft"
2942 flite_filter_deps="libflite"
2943 frei0r_filter_deps="frei0r dlopen"
2944 frei0r_src_filter_deps="frei0r dlopen"
2945 fspp_filter_deps="gpl"
2946 geq_filter_deps="gpl"
2947 histeq_filter_deps="gpl"
2948 hqdn3d_filter_deps="gpl"
2949 hwupload_cuda_filter_deps="cuda"
2950 interlace_filter_deps="gpl"
2951 kerndeint_filter_deps="gpl"
2952 ladspa_filter_deps="ladspa dlopen"
2953 mcdeint_filter_deps="avcodec gpl"
2954 movie_filter_deps="avcodec avformat"
2955 mpdecimate_filter_deps="gpl"
2956 mpdecimate_filter_select="pixelutils"
2957 mptestsrc_filter_deps="gpl"
2958 negate_filter_deps="lut_filter"
2959 nnedi_filter_deps="gpl"
2960 ocr_filter_deps="libtesseract"
2961 ocv_filter_deps="libopencv"
2962 owdenoise_filter_deps="gpl"
2963 pan_filter_deps="swresample"
2964 perspective_filter_deps="gpl"
2965 phase_filter_deps="gpl"
2966 pp7_filter_deps="gpl"
2967 pp_filter_deps="gpl postproc"
2968 pullup_filter_deps="gpl"
2969 removelogo_filter_deps="avcodec avformat swscale"
2970 repeatfields_filter_deps="gpl"
2971 resample_filter_deps="avresample"
2972 rubberband_filter_deps="librubberband"
2973 sab_filter_deps="gpl swscale"
2974 scale2ref_filter_deps="swscale"
2975 scale_filter_deps="swscale"
2976 select_filter_select="pixelutils"
2977 showcqt_filter_deps="avcodec avformat swscale"
2978 showcqt_filter_select="fft"
2979 showfreqs_filter_deps="avcodec"
2980 showfreqs_filter_select="fft"
2981 showspectrum_filter_deps="avcodec"
2982 showspectrum_filter_select="fft"
2983 showspectrumpic_filter_deps="avcodec"
2984 showspectrumpic_filter_select="fft"
2985 smartblur_filter_deps="gpl swscale"
2986 sofalizer_filter_deps="netcdf avcodec"
2987 sofalizer_filter_select="fft"
2988 spectrumsynth_filter_deps="avcodec"
2989 spectrumsynth_filter_select="fft"
2990 spp_filter_deps="gpl avcodec"
2991 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2992 stereo3d_filter_deps="gpl"
2993 subtitles_filter_deps="avformat avcodec libass"
2994 super2xsai_filter_deps="gpl"
2995 pixfmts_super2xsai_test_deps="super2xsai_filter"
2996 tinterlace_filter_deps="gpl"
2997 tinterlace_merge_test_deps="tinterlace_filter"
2998 tinterlace_pad_test_deps="tinterlace_filter"
2999 uspp_filter_deps="gpl avcodec"
3000 vidstabdetect_filter_deps="libvidstab"
3001 vidstabtransform_filter_deps="libvidstab"
3002 zmq_filter_deps="libzmq"
3003 zoompan_filter_deps="swscale"
3004 zscale_filter_deps="libzimg"
3005
3006 # examples
3007 avcodec_example_deps="avcodec avutil"
3008 avio_dir_cmd="avformat avutil"
3009 avio_reading="avformat avcodec avutil"
3010 decoding_encoding_example_deps="avcodec avformat avutil"
3011 demuxing_decoding_example_deps="avcodec avformat avutil"
3012 extract_mvs_example_deps="avcodec avformat avutil"
3013 filter_audio_example_deps="avfilter avutil"
3014 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3015 filtering_video_example_deps="avfilter avcodec avformat avutil"
3016 metadata_example_deps="avformat avutil"
3017 muxing_example_deps="avcodec avformat avutil swscale"
3018 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3019 remuxing_example_deps="avcodec avformat avutil"
3020 resampling_audio_example_deps="avutil swresample"
3021 scaling_video_example_deps="avutil swscale"
3022 transcode_aac_example_deps="avcodec avformat swresample"
3023 transcoding_example_deps="avfilter avcodec avformat avutil"
3024
3025 # libraries, in linking order
3026 avcodec_deps="avutil"
3027 avdevice_deps="avformat avcodec avutil"
3028 avfilter_deps="avutil"
3029 avformat_deps="avcodec avutil"
3030 avresample_deps="avutil"
3031 postproc_deps="avutil gpl"
3032 swresample_deps="avutil"
3033 swscale_deps="avutil"
3034
3035 # programs
3036 ffmpeg_deps="avcodec avfilter avformat swresample"
3037 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3038                null_filter
3039                setpts_filter trim_filter"
3040 ffplay_deps="avcodec avformat swscale swresample sdl"
3041 ffplay_libs='$sdl_libs'
3042 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3043 ffprobe_deps="avcodec avformat"
3044 ffserver_deps="avformat fork sarestart"
3045 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3046
3047 # documentation
3048 podpages_deps="perl"
3049 manpages_deps="perl pod2man"
3050 htmlpages_deps="perl"
3051 htmlpages_deps_any="makeinfo_html texi2html"
3052 txtpages_deps="perl makeinfo"
3053 doc_deps_any="manpages htmlpages podpages txtpages"
3054
3055 # default parameters
3056
3057 logfile="config.log"
3058
3059 # installation paths
3060 prefix_default="/usr/local"
3061 bindir_default='${prefix}/bin'
3062 datadir_default='${prefix}/share/ffmpeg'
3063 docdir_default='${prefix}/share/doc/ffmpeg'
3064 incdir_default='${prefix}/include'
3065 libdir_default='${prefix}/lib'
3066 mandir_default='${prefix}/share/man'
3067
3068 # toolchain
3069 ar_default="ar"
3070 cc_default="gcc"
3071 cxx_default="g++"
3072 host_cc_default="gcc"
3073 cp_f="cp -f"
3074 doxygen_default="doxygen"
3075 install="install"
3076 ln_s="ln -s -f"
3077 nm_default="nm -g"
3078 objformat="elf"
3079 pkg_config_default=pkg-config
3080 ranlib_default="ranlib"
3081 strip_default="strip"
3082 yasmexe_default="yasm"
3083 windres_default="windres"
3084
3085 # OS
3086 target_os_default=$(tolower $(uname -s))
3087 host_os=$target_os_default
3088
3089 # machine
3090 if test "$target_os_default" = aix; then
3091     arch_default=$(uname -p)
3092     strip_default="strip -X32_64"
3093 else
3094     arch_default=$(uname -m)
3095 fi
3096 cpu="generic"
3097 intrinsics="none"
3098
3099 # configurable options
3100 enable $PROGRAM_LIST
3101 enable $DOCUMENT_LIST
3102 enable $EXAMPLE_LIST
3103 enable $(filter_out avresample $LIBRARY_LIST)
3104 enable stripping
3105
3106 enable asm
3107 enable debug
3108 enable doc
3109 enable faan faandct faanidct
3110 enable optimizations
3111 enable runtime_cpudetect
3112 enable safe_bitstream_reader
3113 enable static
3114 enable swscale_alpha
3115 enable valgrind_backtrace
3116
3117 sws_max_filter_size_default=256
3118 set_default sws_max_filter_size
3119
3120 # Enable platform codecs by default.
3121 enable audiotoolbox
3122
3123 # Enable hwaccels by default.
3124 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3125 enable xlib
3126
3127 enable vda_framework videotoolbox videotoolbox_encoder
3128
3129 # build settings
3130 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3131 LIBPREF="lib"
3132 LIBSUF=".a"
3133 FULLNAME='$(NAME)$(BUILDSUF)'
3134 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3135 SLIBPREF="lib"
3136 SLIBSUF=".so"
3137 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3138 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3139 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3140 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3141 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3142 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3143
3144 asflags_filter=echo
3145 cflags_filter=echo
3146 ldflags_filter=echo
3147
3148 AS_C='-c'
3149 AS_O='-o $@'
3150 CC_C='-c'
3151 CC_E='-E -o $@'
3152 CC_O='-o $@'
3153 CXX_C='-c'
3154 CXX_O='-o $@'
3155 OBJCC_C='-c'
3156 OBJCC_E='-E -o $@'
3157 OBJCC_O='-o $@'
3158 LD_O='-o $@'
3159 LD_LIB='-l%'
3160 LD_PATH='-L'
3161 HOSTCC_C='-c'
3162 HOSTCC_E='-E -o $@'
3163 HOSTCC_O='-o $@'
3164 HOSTLD_O='-o $@'
3165
3166 host_libs='-lm'
3167 host_cflags_filter=echo
3168 host_ldflags_filter=echo
3169
3170 target_path='$(CURDIR)'
3171
3172 # since the object filename is not given with the -MM flag, the compiler
3173 # is only able to print the basename, and we must add the path ourselves
3174 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3175 DEPFLAGS='-MM'
3176
3177 # find source path
3178 if test -f configure; then
3179     source_path=.
3180 else
3181     source_path=$(cd $(dirname "$0"); pwd)
3182     case "$source_path" in
3183         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3184     esac
3185     test -e "$source_path/config.h" &&
3186         die "Out of tree builds are impossible with config.h in source dir."
3187 fi
3188
3189 for v in "$@"; do
3190     r=${v#*=}
3191     l=${v%"$r"}
3192     r=$(sh_quote "$r")
3193     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3194 done
3195
3196 find_things(){
3197     thing=$1
3198     pattern=$2
3199     file=$source_path/$3
3200     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3201 }
3202
3203 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3204 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3205 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3206 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3207 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3208 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3209 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3210 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3211 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3212 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3213
3214 find_things_extern(){
3215     thing=$1
3216     pattern=$2
3217     file=$source_path/$3
3218     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3219 }
3220
3221 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3222
3223 ALL_COMPONENTS="
3224     $BSF_LIST
3225     $DECODER_LIST
3226     $DEMUXER_LIST
3227     $ENCODER_LIST
3228     $FILTER_LIST
3229     $HWACCEL_LIST
3230     $INDEV_LIST
3231     $MUXER_LIST
3232     $OUTDEV_LIST
3233     $PARSER_LIST
3234     $PROTOCOL_LIST
3235 "
3236
3237 for n in $COMPONENT_LIST; do
3238     v=$(toupper ${n%s})_LIST
3239     eval enable \$$v
3240     eval ${n}_if_any="\$$v"
3241 done
3242
3243 enable $ARCH_EXT_LIST
3244
3245 die_unknown(){
3246     echo "Unknown option \"$1\"."
3247     echo "See $0 --help for available options."
3248     exit 1
3249 }
3250
3251 print_in_columns() {
3252     cols=$(expr $ncols / 24)
3253     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3254 }
3255
3256 show_list() {
3257     suffix=_$1
3258     shift
3259     echo $* | sed s/$suffix//g | print_in_columns
3260     exit 0
3261 }
3262
3263 rand_list(){
3264     IFS=', '
3265     set -- $*
3266     unset IFS
3267     for thing; do
3268         comp=${thing%:*}
3269         prob=${thing#$comp}
3270         prob=${prob#:}
3271         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3272         echo "prob ${prob:-0.5}"
3273         printf '%s\n' $comp
3274     done
3275 }
3276
3277 do_random(){
3278     action=$1
3279     shift
3280     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3281     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3282 }
3283
3284 for opt do
3285     optval="${opt#*=}"
3286     case "$opt" in
3287         --extra-ldflags=*)
3288             add_ldflags $optval
3289         ;;
3290         --extra-ldexeflags=*)
3291             add_ldexeflags $optval
3292         ;;
3293         --extra-ldlibflags=*)
3294             add_ldlibflags $optval
3295         ;;
3296         --extra-libs=*)
3297             add_extralibs $optval
3298         ;;
3299         --disable-devices)
3300             disable $INDEV_LIST $OUTDEV_LIST
3301         ;;
3302         --enable-debug=*)
3303             debuglevel="$optval"
3304         ;;
3305         --disable-programs)
3306             disable $PROGRAM_LIST
3307         ;;
3308         --disable-everything)
3309             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3310         ;;
3311         --disable-all)
3312             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3313             disable $LIBRARY_LIST $PROGRAM_LIST doc
3314             enable avutil
3315         ;;
3316         --enable-random|--disable-random)
3317             action=${opt%%-random}
3318             do_random ${action#--} $COMPONENT_LIST
3319         ;;
3320         --enable-random=*|--disable-random=*)
3321             action=${opt%%-random=*}
3322             do_random ${action#--} $optval
3323         ;;
3324         --enable-*=*|--disable-*=*)
3325             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3326             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3327             eval list=\$$(toupper $thing)_LIST
3328             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3329             list=$(filter "$name" $list)
3330             [ "$list" = "" ] && warn "Option $opt did not match anything"
3331             $action $list
3332         ;;
3333         --enable-?*|--disable-?*)
3334             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3335             if is_in $option $COMPONENT_LIST; then
3336                 test $action = disable && action=unset
3337                 eval $action \$$(toupper ${option%s})_LIST
3338             elif is_in $option $CMDLINE_SELECT; then
3339                 $action $option
3340             else
3341                 die_unknown $opt
3342             fi
3343         ;;
3344         --list-*)
3345             NAME="${opt#--list-}"
3346             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3347             NAME=${NAME%s}
3348             eval show_list $NAME \$$(toupper $NAME)_LIST
3349         ;;
3350         --help|-h) show_help
3351         ;;
3352         --fatal-warnings) enable fatal_warnings
3353         ;;
3354         *)
3355             optname="${opt%%=*}"
3356             optname="${optname#--}"
3357             optname=$(echo "$optname" | sed 's/-/_/g')
3358             if is_in $optname $CMDLINE_SET; then
3359                 eval $optname='$optval'
3360             elif is_in $optname $CMDLINE_APPEND; then
3361                 append $optname "$optval"
3362             else
3363                 die_unknown $opt
3364             fi
3365         ;;
3366     esac
3367 done
3368
3369 for e in $env; do
3370     eval "export $e"
3371 done
3372
3373 disabled logging && logfile=/dev/null
3374
3375 # Disable all the library-specific components if the library itself
3376 # is disabled, see AVCODEC_LIST and following _LIST variables.
3377
3378 disable_components(){
3379     disabled ${1} && disable $(
3380         eval components="\$$(toupper ${1})_COMPONENTS"
3381         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3382     )
3383 }
3384
3385 map 'disable_components $v' $LIBRARY_LIST
3386
3387 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3388 set >> $logfile
3389
3390 test -n "$valgrind" && toolchain="valgrind-memcheck"
3391
3392 case "$toolchain" in
3393     *-asan)
3394         cc_default="${toolchain%-asan}"
3395         add_cflags  -fsanitize=address
3396         add_ldflags -fsanitize=address
3397     ;;
3398     *-tsan)
3399         cc_default="${toolchain%-tsan}"
3400         add_cflags  -fsanitize=thread -pie
3401         add_ldflags -fsanitize=thread -pie
3402         case "$toolchain" in
3403             gcc-tsan)
3404                 add_cflags  -fPIC
3405                 add_ldflags -fPIC
3406                 ;;
3407         esac
3408     ;;
3409     *-usan)
3410         cc_default="${toolchain%-usan}"
3411         add_cflags  -fsanitize=undefined
3412         add_ldflags -fsanitize=undefined
3413     ;;
3414     valgrind-*)
3415         target_exec_default="valgrind"
3416         case "$toolchain" in
3417             valgrind-massif)
3418                 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"
3419                 ;;
3420             valgrind-memcheck)
3421                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3422                 ;;
3423         esac
3424     ;;
3425     msvc)
3426         # Check whether the current MSVC version needs the C99 converter.
3427         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3428         # support enough of C99 to build ffmpeg. Default to the new
3429         # behaviour if the regexp was unable to match anything, since this
3430         # successfully parses the version number of existing supported
3431         # versions that require the converter (MSVC 2010 and 2012).
3432         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3433         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3434             cc_default="cl"
3435         else
3436             cc_default="c99wrap cl"
3437         fi
3438         ld_default="$source_path/compat/windows/mslink"
3439         nm_default="dumpbin -symbols"
3440         ar_default="lib"
3441         case "$arch" in
3442         arm*)
3443             as_default="armasm"
3444             ;;
3445         esac
3446         target_os_default="win32"
3447         # Use a relative path for TMPDIR. This makes sure all the
3448         # ffconf temp files are written with a relative path, avoiding
3449         # issues with msys/win32 path conversion for MSVC parameters
3450         # such as -Fo<file> or -out:<file>.
3451         TMPDIR=.
3452     ;;
3453     icl)
3454         cc_default="icl"
3455         ld_default="xilink"
3456         nm_default="dumpbin -symbols"
3457         ar_default="xilib"
3458         target_os_default="win32"
3459         TMPDIR=.
3460     ;;
3461     gcov)
3462         add_cflags  -fprofile-arcs -ftest-coverage
3463         add_ldflags -fprofile-arcs -ftest-coverage
3464     ;;
3465     hardened)
3466         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3467         add_cflags   -fno-strict-overflow -fstack-protector-all
3468         add_ldflags  -Wl,-z,relro -Wl,-z,now
3469     ;;
3470     ?*)
3471         die "Unknown toolchain $toolchain"
3472     ;;
3473 esac
3474
3475 test -n "$cross_prefix" && enable cross_compile
3476
3477 if enabled cross_compile; then
3478     test -n "$arch" && test -n "$target_os" ||
3479         die "Must specify target arch and OS when cross-compiling"
3480 fi
3481
3482 ar_default="${cross_prefix}${ar_default}"
3483 cc_default="${cross_prefix}${cc_default}"
3484 cxx_default="${cross_prefix}${cxx_default}"
3485 nm_default="${cross_prefix}${nm_default}"
3486 pkg_config_default="${cross_prefix}${pkg_config_default}"
3487 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3488     ranlib_default="${cross_prefix}${ranlib_default} -D"
3489 else
3490     ranlib_default="${cross_prefix}${ranlib_default}"
3491 fi
3492 strip_default="${cross_prefix}${strip_default}"
3493 windres_default="${cross_prefix}${windres_default}"
3494
3495 sysinclude_default="${sysroot}/usr/include"
3496
3497 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3498     target_exec target_os yasmexe
3499 enabled cross_compile || host_cc_default=$cc
3500 set_default host_cc
3501
3502 pkg_config_fail_message=""
3503 if ! $pkg_config --version >/dev/null 2>&1; then
3504     warn "$pkg_config not found, library detection may fail."
3505     pkg_config=false
3506 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3507     pkg_config_fail_message="
3508 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3509 fi
3510
3511 if test $doxygen != $doxygen_default && \
3512   ! $doxygen --version >/dev/null 2>&1; then
3513     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3514 fi
3515
3516 exesuf() {
3517     case $1 in
3518         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3519     esac
3520 }
3521
3522 EXESUF=$(exesuf $target_os)
3523 HOSTEXESUF=$(exesuf $host_os)
3524
3525 # set temporary file name
3526 : ${TMPDIR:=$TEMPDIR}
3527 : ${TMPDIR:=$TMP}
3528 : ${TMPDIR:=/tmp}
3529
3530 if [ -n "$tempprefix" ] ; then
3531     mktemp(){
3532         echo $tempprefix.${HOSTNAME}.${UID}
3533     }
3534 elif ! check_cmd mktemp -u XXXXXX; then
3535     # simple replacement for missing mktemp
3536     # NOT SAFE FOR GENERAL USE
3537     mktemp(){
3538         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3539     }
3540 fi
3541
3542 tmpfile(){
3543     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3544         (set -C; exec > $tmp) 2>/dev/null ||
3545         die "Unable to create temporary file in $TMPDIR."
3546     append TMPFILES $tmp
3547     eval $1=$tmp
3548 }
3549
3550 trap 'rm -f -- $TMPFILES' EXIT
3551
3552 tmpfile TMPASM .asm
3553 tmpfile TMPC   .c
3554 tmpfile TMPCPP .cpp
3555 tmpfile TMPE   $EXESUF
3556 tmpfile TMPH   .h
3557 tmpfile TMPM   .m
3558 tmpfile TMPO   .o
3559 tmpfile TMPS   .S
3560 tmpfile TMPSH  .sh
3561 tmpfile TMPV   .ver
3562
3563 unset -f mktemp
3564
3565 chmod +x $TMPE
3566
3567 # make sure we can execute files in $TMPDIR
3568 cat > $TMPSH 2>> $logfile <<EOF
3569 #! /bin/sh
3570 EOF
3571 chmod +x $TMPSH >> $logfile 2>&1
3572 if ! $TMPSH >> $logfile 2>&1; then
3573     cat <<EOF
3574 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3575 variable to another directory and make sure that it is not mounted noexec.
3576 EOF
3577     die "Sanity test failed."
3578 fi
3579
3580 armasm_flags(){
3581     for flag; do
3582         case $flag in
3583             # Filter out MSVC cl.exe options from cflags that shouldn't
3584             # be passed to gas-preprocessor
3585             -M[TD]*)                                            ;;
3586             *)                  echo $flag                      ;;
3587         esac
3588    done
3589 }
3590
3591 ccc_flags(){
3592     for flag; do
3593         case $flag in
3594             -std=c99)           echo -c99                       ;;
3595             -mcpu=*)            echo -arch ${flag#*=}           ;;
3596             -mieee)             echo -ieee                      ;;
3597             -O*|-fast)          echo $flag                      ;;
3598             -fno-math-errno)    echo -assume nomath_errno       ;;
3599             -g)                 echo -g3                        ;;
3600             -Wall)              echo -msg_enable level2         ;;
3601             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3602             -Wl,*)              echo $flag                      ;;
3603             -f*|-W*)                                            ;;
3604             *)                  echo $flag                      ;;
3605         esac
3606    done
3607 }
3608
3609 cparser_flags(){
3610     for flag; do
3611         case $flag in
3612             -Wno-switch)             echo -Wno-switch-enum ;;
3613             -Wno-format-zero-length) ;;
3614             -Wdisabled-optimization) ;;
3615             -Wno-pointer-sign)       echo -Wno-other ;;
3616             *)                       echo $flag ;;
3617         esac
3618     done
3619 }
3620
3621 msvc_common_flags(){
3622     for flag; do
3623         case $flag in
3624             # In addition to specifying certain flags under the compiler
3625             # specific filters, they must be specified here as well or else the
3626             # generic catch all at the bottom will print the original flag.
3627             -Wall)                ;;
3628             -std=c99)             ;;
3629             # Common flags
3630             -fomit-frame-pointer) ;;
3631             -g)                   echo -Z7 ;;
3632             -fno-math-errno)      ;;
3633             -fno-common)          ;;
3634             -fno-signed-zeros)    ;;
3635             -fPIC)                ;;
3636             -mthumb)              ;;
3637             -march=*)             ;;
3638             -lz)                  echo zlib.lib ;;
3639             -lavifil32)           echo vfw32.lib ;;
3640             -lavicap32)           echo vfw32.lib user32.lib ;;
3641             -lx264)               echo libx264.lib ;;
3642             -l*)                  echo ${flag#-l}.lib ;;
3643             -LARGEADDRESSAWARE)   echo $flag ;;
3644             -L*)                  echo -libpath:${flag#-L} ;;
3645             *)                    echo $flag ;;
3646         esac
3647     done
3648 }
3649
3650 msvc_flags(){
3651     msvc_common_flags "$@"
3652     for flag; do
3653         case $flag in
3654             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3655                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3656                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3657                                        -wd4307 \
3658                                        -wd4273 -wd4554 -wd4701 ;;
3659         esac
3660     done
3661 }
3662
3663 icl_flags(){
3664     msvc_common_flags "$@"
3665     for flag; do
3666         case $flag in
3667             # Despite what Intel's documentation says -Wall, which is supported
3668             # on Windows, does enable remarks so disable them here.
3669             -Wall)                echo $flag -Qdiag-disable:remark ;;
3670             -std=c99)             echo -Qstd=c99 ;;
3671             -flto)                echo -ipo ;;
3672         esac
3673     done
3674 }
3675
3676 icc_flags(){
3677     for flag; do
3678         case $flag in
3679             -flto)                echo -ipo ;;
3680             *)                    echo $flag ;;
3681         esac
3682     done
3683 }
3684
3685 pgi_flags(){
3686     for flag; do
3687         case $flag in
3688             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3689             -fomit-frame-pointer) echo -Mnoframe ;;
3690             -g)                   echo -gopt ;;
3691             *)                    echo $flag ;;
3692         esac
3693     done
3694 }
3695
3696 suncc_flags(){
3697     for flag; do
3698         case $flag in
3699             -march=*|-mcpu=*)
3700                 case "${flag#*=}" in
3701                     native)                   echo -xtarget=native       ;;
3702                     v9|niagara)               echo -xarch=sparc          ;;
3703                     ultrasparc)               echo -xarch=sparcvis       ;;
3704                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3705                     i586|pentium)             echo -xchip=pentium        ;;
3706                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3707                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3708                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3709                     pentium4*)          echo -xtarget=pentium4           ;;
3710                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3711                     *-sse3)             echo -xarch=sse3                 ;;
3712                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3713                     bonnell)                   echo -xarch=ssse3         ;;
3714                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3715                     westmere)                  echo -xtarget=westmere    ;;
3716                     silvermont)                echo -xarch=sse4_2        ;;
3717                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3718                     core-avx*|ivybridge|haswell|broadwell)
3719                                                echo -xarch=avx           ;;
3720                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3721                     btver1)                    echo -xarch=amdsse4a      ;;
3722                     btver2|bdver*)             echo -xarch=avx           ;;
3723                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3724                     k8|opteron|athlon64|athlon-fx)
3725                                                echo -xarch=sse2a         ;;
3726                     athlon*)                   echo -xarch=pentium_proa  ;;
3727                 esac
3728                 ;;
3729             -std=c99)             echo -xc99              ;;
3730             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3731             -fPIC)                echo -KPIC -xcode=pic32 ;;
3732             -W*,*)                echo $flag              ;;
3733             -f*-*|-W*|-mimpure-text)                      ;;
3734             -shared)              echo -G                 ;;
3735             *)                    echo $flag              ;;
3736         esac
3737     done
3738 }
3739
3740 tms470_flags(){
3741     for flag; do
3742         case $flag in
3743             -march=*|-mcpu=*)
3744                 case "${flag#*=}" in
3745                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3746                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3747                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3748                     armv6*|arm11*)          echo -mv=6   ;;
3749                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3750                                             echo -mv=5e  ;;
3751                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3752                 esac
3753                 ;;
3754             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3755             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3756             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3757             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3758             -msoft-float)   echo --float_support=vfplib       ;;
3759             -O[0-3]|-mf=*)  echo $flag                        ;;
3760             -g)             echo -g -mn                       ;;
3761             -pds=*)         echo $flag                        ;;
3762             -D*|-I*)        echo $flag                        ;;
3763             --gcc|--abi=*)  echo $flag                        ;;
3764             -me)            echo $flag                        ;;
3765         esac
3766     done
3767 }
3768
3769 probe_cc(){
3770     pfx=$1
3771     _cc=$2
3772     first=$3
3773
3774     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3775     unset _ld_o _ldflags _ld_lib _ld_path
3776     unset _depflags _DEPCMD _DEPFLAGS
3777     _flags_filter=echo
3778
3779     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3780         true # no-op to avoid reading stdin in following checks
3781     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3782         _type=llvm_gcc
3783         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3784         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3785         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3786         _cflags_speed='-O3'
3787         _cflags_size='-Os'
3788     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3789         _type=gcc
3790         gcc_version=$($_cc --version | head -n1)
3791         gcc_basever=$($_cc -dumpversion)
3792         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3793         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3794         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3795         case $gcc_basever in
3796             2) ;;
3797             2.*) ;;
3798             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3799         esac
3800         if [ "$first" = true ]; then
3801             case $gcc_basever in
3802                 4.2*)
3803                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3804             esac
3805         fi
3806         _cflags_speed='-O3'
3807         _cflags_size='-Os'
3808     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3809         _type=icc
3810         _ident=$($_cc --version | head -n1)
3811         _depflags='-MMD'
3812         _cflags_speed='-O3'
3813         _cflags_size='-Os'
3814         _cflags_noopt='-O1'
3815         _flags_filter=icc_flags
3816     elif $_cc -v 2>&1 | grep -q xlc; then
3817         _type=xlc
3818         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3819         _cflags_speed='-O5'
3820         _cflags_size='-O5 -qcompact'
3821     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3822         _type=ccc
3823         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3824         _DEPFLAGS='-M'
3825         _cflags_speed='-fast'
3826         _cflags_size='-O1'
3827         _flags_filter=ccc_flags
3828     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3829         test -d "$sysroot" || die "No valid sysroot specified."
3830         _type=armcc
3831         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3832         armcc_conf="$PWD/armcc.conf"
3833         $_cc --arm_linux_configure                 \
3834              --arm_linux_config_file="$armcc_conf" \
3835              --configure_sysroot="$sysroot"        \
3836              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3837              die "Error creating armcc configuration file."
3838         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3839         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3840         as_default="${cross_prefix}gcc"
3841         _depflags='-MMD'
3842         _cflags_speed='-O3'
3843         _cflags_size='-Os'
3844     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3845         _type=tms470
3846         _ident=$($_cc -version | head -n1 | tr -s ' ')
3847         _flags='--gcc --abi=eabi -me'
3848         _cc_e='-ppl -fe=$@'
3849         _cc_o='-fe=$@'
3850         _depflags='-ppa -ppd=$(@:.o=.d)'
3851         _cflags_speed='-O3 -mf=5'
3852         _cflags_size='-O3 -mf=2'
3853         _flags_filter=tms470_flags
3854     elif $_cc -v 2>&1 | grep -q clang; then
3855         _type=clang
3856         _ident=$($_cc --version 2>/dev/null | head -n1)
3857         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3858         _cflags_speed='-O3'
3859         _cflags_size='-Os'
3860     elif $_cc -V 2>&1 | grep -q Sun; then
3861         _type=suncc
3862         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3863         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3864         _DEPFLAGS='-xM1 -xc99'
3865         _ldflags='-std=c99'
3866         _cflags_speed='-O5'
3867         _cflags_size='-O5 -xspace'
3868         _flags_filter=suncc_flags
3869     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3870         _type=pathscale
3871         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3872         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3873         _cflags_speed='-O2'
3874         _cflags_size='-Os'
3875         _flags_filter='filter_out -Wdisabled-optimization'
3876     elif $_cc -v 2>&1 | grep -q Open64; then
3877         _type=open64
3878         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3879         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3880         _cflags_speed='-O2'
3881         _cflags_size='-Os'
3882         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3883     elif $_cc -V 2>&1 | grep -q Portland; then
3884         _type=pgi
3885         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3886         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3887         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3888         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3889         _cflags_noopt="-O"
3890         _flags_filter=pgi_flags
3891     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3892         _type=armasm
3893         _ident=$($_cc | head -n1)
3894         # 4509: "This form of conditional instruction is deprecated"
3895         _flags="-nologo -ignore 4509"
3896         _flags_filter=armasm_flags
3897     elif $_cc 2>&1 | grep -q Intel; then
3898         _type=icl
3899         _ident=$($_cc 2>&1 | head -n1)
3900         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3901         # Not only is O3 broken on 13.x+ but it is slower on all previous
3902         # versions (tested) as well.
3903         _cflags_speed="-O2"
3904         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3905         if $_cc 2>&1 | grep -q Linker; then
3906             _ld_o='-out:$@'
3907         else
3908             _ld_o='-Fe$@'
3909         fi
3910         _cc_o='-Fo$@'
3911         _cc_e='-P'
3912         _flags_filter=icl_flags
3913         _ld_lib='lib%.a'
3914         _ld_path='-libpath:'
3915         # -Qdiag-error to make icl error when seeing certain unknown arguments
3916         _flags='-nologo -Qdiag-error:4044,10157'
3917         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3918         # with MSVC which enables it by default.
3919         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3920         disable stripping
3921     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3922         _type=msvc
3923         _ident=$($_cc 2>&1 | head -n1)
3924         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3925         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3926         _cflags_speed="-O2"
3927         _cflags_size="-O1"
3928         if $_cc -nologo- 2>&1 | grep -q Linker; then
3929             _ld_o='-out:$@'
3930         else
3931             _ld_o='-Fe$@'
3932         fi
3933         _cc_o='-Fo$@'
3934         _cc_e='-P -Fi$@'
3935         _flags_filter=msvc_flags
3936         _ld_lib='lib%.a'
3937         _ld_path='-libpath:'
3938         _flags='-nologo'
3939         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3940         disable stripping
3941     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3942         _type=cparser
3943         _ident=$($_cc --version | head -n1)
3944         _depflags='-MMD'
3945         _cflags_speed='-O4'
3946         _cflags_size='-O2'
3947         _flags_filter=cparser_flags
3948     fi
3949
3950     eval ${pfx}_type=\$_type
3951     eval ${pfx}_ident=\$_ident
3952 }
3953
3954 set_ccvars(){
3955     eval ${1}_C=\${_cc_c-\${${1}_C}}
3956     eval ${1}_E=\${_cc_e-\${${1}_E}}
3957     eval ${1}_O=\${_cc_o-\${${1}_O}}
3958
3959     if [ -n "$_depflags" ]; then
3960         eval ${1}_DEPFLAGS=\$_depflags
3961     else
3962         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3963         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3964         eval DEP${1}FLAGS=\$_flags
3965     fi
3966 }
3967
3968 probe_cc cc "$cc" "true"
3969 cflags_filter=$_flags_filter
3970 cflags_speed=$_cflags_speed
3971 cflags_size=$_cflags_size
3972 cflags_noopt=$_cflags_noopt
3973 add_cflags $_flags $_cflags
3974 cc_ldflags=$_ldflags
3975 set_ccvars CC
3976
3977 probe_cc hostcc "$host_cc"
3978 host_cflags_filter=$_flags_filter
3979 add_host_cflags  $_flags $_cflags
3980 set_ccvars HOSTCC
3981
3982 test -n "$cc_type" && enable $cc_type ||
3983     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3984
3985 : ${as_default:=$cc}
3986 : ${objcc_default:=$cc}
3987 : ${dep_cc_default:=$cc}
3988 : ${ld_default:=$cc}
3989 : ${host_ld_default:=$host_cc}
3990 set_default ar as objcc dep_cc ld host_ld windres
3991
3992 probe_cc as "$as"
3993 asflags_filter=$_flags_filter
3994 add_asflags $_flags $_cflags
3995 set_ccvars AS
3996
3997 probe_cc objcc "$objcc"
3998 objcflags_filter=$_flags_filter
3999 add_objcflags $_flags $_cflags
4000 set_ccvars OBJC
4001
4002 probe_cc ld "$ld"
4003 ldflags_filter=$_flags_filter
4004 add_ldflags $_flags $_ldflags
4005 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4006 LD_O=${_ld_o-$LD_O}
4007 LD_LIB=${_ld_lib-$LD_LIB}
4008 LD_PATH=${_ld_path-$LD_PATH}
4009
4010 probe_cc hostld "$host_ld"
4011 host_ldflags_filter=$_flags_filter
4012 add_host_ldflags $_flags $_ldflags
4013 HOSTLD_O=${_ld_o-$HOSTLD_O}
4014
4015 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4016     probe_cc depcc "$dep_cc"
4017     CCDEP=${_DEPCMD:-$DEPCMD}
4018     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4019     DEPCCFLAGS=$_flags
4020 fi
4021
4022 if $ar 2>&1 | grep -q Microsoft; then
4023     arflags="-nologo"
4024     ar_o='-out:$@'
4025 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4026     arflags="rq"
4027     ar_o='$@'
4028 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4029     arflags='-Xany -r -c'
4030     ar_o='$@'
4031 elif $ar 2>&1 | grep -q "\[D\] "; then
4032     arflags="rcD"
4033     ar_o='$@'
4034 else
4035     arflags="rc"
4036     ar_o='$@'
4037 fi
4038
4039 add_cflags $extra_cflags
4040 add_cxxflags $extra_cxxflags
4041 add_objcflags $extra_objcflags
4042 add_asflags $extra_cflags
4043
4044 if test -n "$sysroot"; then
4045     case "$cc_type" in
4046         gcc|llvm_gcc|clang)
4047             add_cppflags --sysroot="$sysroot"
4048             add_ldflags --sysroot="$sysroot"
4049 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4050             add_cppflags -isysroot "$sysroot"
4051             add_ldflags -isysroot "$sysroot"
4052         ;;
4053         tms470)
4054             add_cppflags -I"$sysinclude"
4055             add_ldflags  --sysroot="$sysroot"
4056         ;;
4057     esac
4058 fi
4059
4060 if test "$cpu" = host; then
4061     enabled cross_compile &&
4062         die "--cpu=host makes no sense when cross-compiling."
4063
4064     case "$cc_type" in
4065         gcc|llvm_gcc)
4066             check_native(){
4067                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4068                 sed -n "/cc1.*$1=/{
4069                             s/.*$1=\\([^ ]*\\).*/\\1/
4070                             p
4071                             q
4072                         }" $TMPE
4073             }
4074             cpu=$(check_native -march || check_native -mcpu)
4075         ;;
4076         clang)
4077             check_native(){
4078                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4079                 sed -n "/cc1.*-target-cpu /{
4080                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4081                             p
4082                             q
4083                         }" $TMPE
4084             }
4085             cpu=$(check_native -march)
4086         ;;
4087     esac
4088
4089     test "${cpu:-host}" = host &&
4090         die "--cpu=host not supported with compiler $cc"
4091 fi
4092
4093 # Deal with common $arch aliases
4094 case "$arch" in
4095     aarch64|arm64)
4096         arch="aarch64"
4097     ;;
4098     arm*|iPad*|iPhone*)
4099         arch="arm"
4100     ;;
4101     mips*|IP*)
4102         case "$arch" in
4103         *el)
4104             add_cppflags -EL
4105             add_ldflags -EL
4106         ;;
4107         *eb)
4108             add_cppflags -EB
4109             add_ldflags -EB
4110         ;;
4111         esac
4112         arch="mips"
4113     ;;
4114     parisc*|hppa*)
4115         arch="parisc"
4116     ;;
4117     "Power Macintosh"|ppc*|powerpc*)
4118         arch="ppc"
4119     ;;
4120     s390|s390x)
4121         arch="s390"
4122     ;;
4123     sh4|sh)
4124         arch="sh4"
4125     ;;
4126     sun4u|sparc*)
4127         arch="sparc"
4128     ;;
4129     tilegx|tile-gx)
4130         arch="tilegx"
4131     ;;
4132     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4133         arch="x86"
4134     ;;
4135 esac
4136
4137 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4138 enable $arch
4139
4140 # Add processor-specific flags
4141 if enabled aarch64; then
4142
4143     case $cpu in
4144         armv*)
4145             cpuflags="-march=$cpu"
4146         ;;
4147         *)
4148             cpuflags="-mcpu=$cpu"
4149         ;;
4150     esac
4151
4152 elif enabled alpha; then
4153
4154     cpuflags="-mcpu=$cpu"
4155
4156 elif enabled arm; then
4157
4158     check_arm_arch() {
4159         check_cpp_condition stddef.h \
4160             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4161             $cpuflags
4162     }
4163
4164     probe_arm_arch() {
4165         if   check_arm_arch 4;        then echo armv4;
4166         elif check_arm_arch 4T;       then echo armv4t;
4167         elif check_arm_arch 5;        then echo armv5;
4168         elif check_arm_arch 5E;       then echo armv5e;
4169         elif check_arm_arch 5T;       then echo armv5t;
4170         elif check_arm_arch 5TE;      then echo armv5te;
4171         elif check_arm_arch 5TEJ;     then echo armv5te;
4172         elif check_arm_arch 6;        then echo armv6;
4173         elif check_arm_arch 6J;       then echo armv6j;
4174         elif check_arm_arch 6K;       then echo armv6k;
4175         elif check_arm_arch 6Z;       then echo armv6z;
4176         elif check_arm_arch 6ZK;      then echo armv6zk;
4177         elif check_arm_arch 6T2;      then echo armv6t2;
4178         elif check_arm_arch 7;        then echo armv7;
4179         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4180         elif check_arm_arch 7S;       then echo armv7-a;
4181         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4182         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4183         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4184         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4185         fi
4186     }
4187
4188     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4189
4190     case $cpu in
4191         armv*)
4192             cpuflags="-march=$cpu"
4193             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4194         ;;
4195         *)
4196             cpuflags="-mcpu=$cpu"
4197             case $cpu in
4198                 cortex-a*)                               subarch=armv7a  ;;
4199                 cortex-r*)                               subarch=armv7r  ;;
4200                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4201                 arm11*)                                  subarch=armv6   ;;
4202                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4203                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4204                 *)                             subarch=$(probe_arm_arch) ;;
4205             esac
4206         ;;
4207     esac
4208
4209     case "$subarch" in
4210         armv5t*)    enable fast_clz                ;;
4211         armv[6-8]*)
4212             enable fast_clz
4213             disabled fast_unaligned || enable fast_unaligned
4214             ;;
4215     esac
4216
4217 elif enabled avr32; then
4218
4219     case $cpu in
4220         ap7[02]0[0-2])
4221             subarch="avr32_ap"
4222             cpuflags="-mpart=$cpu"
4223         ;;
4224         ap)
4225             subarch="avr32_ap"
4226             cpuflags="-march=$cpu"
4227         ;;
4228         uc3[ab]*)
4229             subarch="avr32_uc"
4230             cpuflags="-mcpu=$cpu"
4231         ;;
4232         uc)
4233             subarch="avr32_uc"
4234             cpuflags="-march=$cpu"
4235         ;;
4236     esac
4237
4238 elif enabled bfin; then
4239
4240     cpuflags="-mcpu=$cpu"
4241
4242 elif enabled mips; then
4243
4244     cpuflags="-march=$cpu"
4245
4246     if [ "$cpu" != "generic" ]; then
4247         disable mips32r2
4248         disable mips32r5
4249         disable mips64r2
4250         disable mips32r6
4251         disable mips64r6
4252         disable loongson2
4253         disable loongson3
4254
4255         case $cpu in
4256             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4257                 enable mips32r2
4258                 disable msa
4259             ;;
4260             p5600|i6400)
4261                 disable mipsdsp
4262                 disable mipsdspr2
4263             ;;
4264             loongson*)
4265                 enable loongson2
4266                 enable loongson3
4267                 enable local_aligned_8 local_aligned_16 local_aligned_32
4268                 enable simd_align_16
4269                 enable fast_64bit
4270                 enable fast_clz
4271                 enable fast_cmov
4272                 enable fast_unaligned
4273                 disable aligned_stack
4274                 case $cpu in
4275                     loongson3*)
4276                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4277                     ;;
4278                     loongson2e)
4279                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4280                     ;;
4281                     loongson2f)
4282                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4283                     ;;
4284                 esac
4285             ;;
4286             *)
4287                 # Unknown CPU. Disable everything.
4288                 warn "unknown CPU. Disabling all MIPS optimizations."
4289                 disable mipsfpu
4290                 disable mipsdsp
4291                 disable mipsdspr2
4292                 disable msa
4293                 disable mmi
4294             ;;
4295         esac
4296
4297         case $cpu in
4298             24kc)
4299                 disable mipsfpu
4300                 disable mipsdsp
4301                 disable mipsdspr2
4302             ;;
4303             24kf*)
4304                 disable mipsdsp
4305                 disable mipsdspr2
4306             ;;
4307             24kec|34kc|1004kc)
4308                 disable mipsfpu
4309                 disable mipsdspr2
4310             ;;
4311             24kef*|34kf*|1004kf*)
4312                 disable mipsdspr2
4313             ;;
4314             74kc)
4315                 disable mipsfpu
4316             ;;
4317             p5600)
4318                 enable mips32r5
4319                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4320             ;;
4321             i6400)
4322                 enable mips64r6
4323                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4324             ;;
4325         esac
4326     else
4327         # We do not disable anything. Is up to the user to disable the unwanted features.
4328         warn 'generic cpu selected'
4329     fi
4330
4331 elif enabled ppc; then
4332
4333     disable ldbrx
4334
4335     case $(tolower $cpu) in
4336         601|ppc601|powerpc601)
4337             cpuflags="-mcpu=601"
4338             disable altivec
4339         ;;
4340         603*|ppc603*|powerpc603*)
4341             cpuflags="-mcpu=603"
4342             disable altivec
4343         ;;
4344         604*|ppc604*|powerpc604*)
4345             cpuflags="-mcpu=604"
4346             disable altivec
4347         ;;
4348         g3|75*|ppc75*|powerpc75*)
4349             cpuflags="-mcpu=750"
4350             disable altivec
4351         ;;
4352         g4|745*|ppc745*|powerpc745*)
4353             cpuflags="-mcpu=7450"
4354             disable vsx
4355         ;;
4356         74*|ppc74*|powerpc74*)
4357             cpuflags="-mcpu=7400"
4358             disable vsx
4359         ;;
4360         g5|970|ppc970|powerpc970)
4361             cpuflags="-mcpu=970"
4362             disable vsx
4363         ;;
4364         power[3-6]*)
4365             cpuflags="-mcpu=$cpu"
4366             disable vsx
4367         ;;
4368         power[7-8]*)
4369             cpuflags="-mcpu=$cpu"
4370         ;;
4371         cell)
4372             cpuflags="-mcpu=cell"
4373             enable ldbrx
4374             disable vsx
4375         ;;
4376         e500mc)
4377             cpuflags="-mcpu=e500mc"
4378             disable altivec
4379         ;;
4380         e500v2)
4381             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4382             disable altivec
4383             disable dcbzl
4384         ;;
4385         e500)
4386             cpuflags="-mcpu=8540 -mhard-float"
4387             disable altivec
4388             disable dcbzl
4389         ;;
4390     esac
4391
4392 elif enabled sparc; then
4393
4394     case $cpu in
4395         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4396             cpuflags="-mcpu=$cpu"
4397         ;;
4398         ultrasparc*|niagara[234])
4399             cpuflags="-mcpu=$cpu"
4400         ;;
4401     esac
4402
4403 elif enabled x86; then
4404
4405     case $cpu in
4406         i[345]86|pentium)
4407             cpuflags="-march=$cpu"
4408             disable i686
4409             disable mmx
4410         ;;
4411         # targets that do NOT support nopl and conditional mov (cmov)
4412         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4413             cpuflags="-march=$cpu"
4414             disable i686
4415         ;;
4416         # targets that do support nopl and conditional mov (cmov)
4417         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4418         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4419             cpuflags="-march=$cpu"
4420             enable i686
4421             enable fast_cmov
4422         ;;
4423         # targets that do support conditional mov but on which it's slow
4424         pentium4|pentium4m|prescott|nocona)
4425             cpuflags="-march=$cpu"
4426             enable i686
4427             disable fast_cmov
4428         ;;
4429     esac
4430
4431 fi
4432
4433 if [ "$cpu" != generic ]; then
4434     add_cflags  $cpuflags
4435     add_asflags $cpuflags
4436     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4437 fi
4438
4439 # compiler sanity check
4440 check_exec <<EOF
4441 int main(void){ return 0; }
4442 EOF
4443 if test "$?" != 0; then
4444     echo "$cc is unable to create an executable file."
4445     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4446         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4447         echo "Only do this if you know what cross compiling means."
4448     fi
4449     die "C compiler test failed."
4450 fi
4451
4452 add_cppflags -D_ISOC99_SOURCE
4453 add_cxxflags -D__STDC_CONSTANT_MACROS
4454 check_cflags -std=c99
4455 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4456 #include <stdlib.h>
4457 EOF
4458 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4459 #include <stdlib.h>
4460 EOF
4461
4462 add_host_cppflags -D_ISOC99_SOURCE
4463 check_host_cflags -std=c99
4464 check_host_cflags -Wall
4465 check_host_cflags -O3
4466
4467 check_64bit(){
4468     arch32=$1
4469     arch64=$2
4470     expr=$3
4471     check_code cc "" "int test[2*($expr) - 1]" &&
4472         subarch=$arch64 || subarch=$arch32
4473 }
4474
4475 case "$arch" in
4476     aarch64|alpha|ia64)
4477         spic=$shared
4478     ;;
4479     mips)
4480         check_64bit mips mips64 '_MIPS_SIM > 1'
4481         spic=$shared
4482     ;;
4483     parisc)
4484         check_64bit parisc parisc64 'sizeof(void *) > 4'
4485         spic=$shared
4486     ;;
4487     ppc)
4488         check_64bit ppc ppc64 'sizeof(void *) > 4'
4489         spic=$shared
4490     ;;
4491     s390)
4492         check_64bit s390 s390x 'sizeof(void *) > 4'
4493         spic=$shared
4494     ;;
4495     sparc)
4496         check_64bit sparc sparc64 'sizeof(void *) > 4'
4497         spic=$shared
4498     ;;
4499     x86)
4500         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4501         # Treat x32 as x64 for now. Note it also needs spic=$shared
4502         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4503             subarch=x86_64
4504         if test "$subarch" = "x86_64"; then
4505             spic=$shared
4506         fi
4507     ;;
4508     ppc)
4509         check_cc <<EOF && subarch="ppc64"
4510         int test[(int)sizeof(char*) - 7];
4511 EOF
4512     ;;
4513 esac
4514
4515 enable $subarch
4516 enabled spic && enable_weak pic
4517
4518 # OS specific
4519 case $target_os in
4520     aix)
4521         SHFLAGS=-shared
4522         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4523         enabled shared && add_ldflags -Wl,-brtl
4524         ;;
4525     android)
4526         disable symver
4527         enable section_data_rel_ro
4528         SLIB_INSTALL_NAME='$(SLIBNAME)'
4529         SLIB_INSTALL_LINKS=
4530         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4531         ;;
4532     haiku)
4533         prefix_default="/boot/common"
4534         network_extralibs="-lnetwork"
4535         host_libs=
4536         ;;
4537     sunos)
4538         SHFLAGS='-shared -Wl,-h,$$(@F)'
4539         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4540         network_extralibs="-lsocket -lnsl"
4541         add_cppflags -D__EXTENSIONS__
4542         # When using suncc to build, the Solaris linker will mark
4543         # an executable with each instruction set encountered by
4544         # the Solaris assembler.  As our libraries contain their own
4545         # guards for processor-specific code, instead suppress
4546         # generation of the HWCAPS ELF section on Solaris x86 only.
4547         enabled_all suncc x86 &&
4548             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4549             add_ldflags -Wl,-M,mapfile
4550         nm_default='nm -P -g'
4551         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4552         ;;
4553     netbsd)
4554         disable symver
4555         oss_indev_extralibs="-lossaudio"
4556         oss_outdev_extralibs="-lossaudio"
4557         enabled gcc || check_ldflags -Wl,-zmuldefs
4558         ;;
4559     openbsd|bitrig)
4560         disable symver
4561         SHFLAGS='-shared'
4562         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4563         SLIB_INSTALL_LINKS=
4564         oss_indev_extralibs="-lossaudio"
4565         oss_outdev_extralibs="-lossaudio"
4566         ;;
4567     dragonfly)
4568         disable symver
4569         ;;
4570     freebsd)
4571         ;;
4572     bsd/os)
4573         add_extralibs -lpoll -lgnugetopt
4574         strip="strip -d"
4575         ;;
4576     darwin)
4577         enabled ppc && add_asflags -force_cpusubtype_ALL
4578         install_name_dir_default='$(SHLIBDIR)'
4579         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4580         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4581         strip="${strip} -x"
4582         add_ldflags -Wl,-dynamic,-search_paths_first
4583         SLIBSUF=".dylib"
4584         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4585         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4586         objformat="macho"
4587         enabled x86_64 && objformat="macho64"
4588         enabled_any pic shared x86_64 ||
4589             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4590         check_header dispatch/dispatch.h
4591         ;;
4592     msys*)
4593         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4594         ;;
4595     mingw32*|mingw64*)
4596         if test $target_os = "mingw32ce"; then
4597             disable network
4598         else
4599             target_os=mingw32
4600         fi
4601         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4602         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4603         LIBTARGET=i386
4604         if enabled x86_64; then
4605             LIBTARGET="i386:x86-64"
4606         elif enabled arm; then
4607             LIBTARGET=arm-wince
4608         fi
4609         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4610         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4611         shlibdir_default="$bindir_default"
4612         SLIBPREF=""
4613         SLIBSUF=".dll"
4614         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4615         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4616         dlltool="${cross_prefix}dlltool"
4617         if check_cmd lib.exe -list; then
4618             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4619             if enabled x86_64; then
4620                 LIBTARGET=x64
4621             fi
4622         elif check_cmd $dlltool --version; then
4623             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4624         fi
4625         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4626         SLIB_INSTALL_LINKS=
4627         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4628         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4629         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4630         objformat="win32"
4631         ranlib=:
4632         enable dos_paths
4633         check_ldflags -Wl,--nxcompat,--dynamicbase
4634         # Lets work around some stupidity in binutils.
4635         # ld will strip relocations from executables even though we need them
4636         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4637         # however ld then forgets what the entry point should be (oops) so we
4638         # have to manually (re)set it.
4639         if enabled x86_32; then
4640             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4641         elif enabled x86_64; then
4642             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4643             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4644             # Set image base >4GB for extra entropy with HEASLR
4645             add_ldexeflags -Wl,--image-base,0x140000000
4646             append SHFLAGS -Wl,--image-base,0x180000000
4647         fi
4648         ;;
4649     win32|win64)
4650         disable symver
4651         if enabled shared; then
4652             # Link to the import library instead of the normal static library
4653             # for shared libs.
4654             LD_LIB='%.lib'
4655             # Cannot build both shared and static libs with MSVC or icl.
4656             disable static
4657         fi
4658         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4659         shlibdir_default="$bindir_default"
4660         SLIBPREF=""
4661         SLIBSUF=".dll"
4662         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4663         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4664         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4665         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4666         SLIB_INSTALL_LINKS=
4667         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4668         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4669         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4670         objformat="win32"
4671         ranlib=:
4672         enable dos_paths
4673         ;;
4674     cygwin*)
4675         target_os=cygwin
4676         shlibdir_default="$bindir_default"
4677         SLIBPREF="cyg"
4678         SLIBSUF=".dll"
4679         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4680         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4681         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4682         SLIB_INSTALL_LINKS=
4683         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4684         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4685         objformat="win32"
4686         enable dos_paths
4687         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4688         ;;
4689     *-dos|freedos|opendos)
4690         network_extralibs="-lsocket"
4691         objformat="coff"
4692         enable dos_paths
4693         add_cppflags -U__STRICT_ANSI__
4694         ;;
4695     linux)
4696         enable dv1394
4697         enable section_data_rel_ro
4698         ;;
4699     irix*)
4700         target_os=irix
4701         ranlib="echo ignoring ranlib"
4702         ;;
4703     os/2*)
4704         strip="lxlite -CS"
4705         ln_s="cp -f"
4706         objformat="aout"
4707         add_cppflags -D_GNU_SOURCE
4708         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4709         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4710         LIBSUF="_s.a"
4711         SLIBPREF=""
4712         SLIBSUF=".dll"
4713         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4714         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4715         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4716             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4717             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4718             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4719             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4720         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4721             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4722         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4723         enable dos_paths
4724         enable_weak os2threads
4725         ;;
4726     gnu/kfreebsd)
4727         add_cppflags -D_BSD_SOURCE
4728         ;;
4729     gnu)
4730         ;;
4731     qnx)
4732         add_cppflags -D_QNX_SOURCE
4733         network_extralibs="-lsocket"
4734         ;;
4735     symbian)
4736         SLIBSUF=".dll"
4737         enable dos_paths
4738         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4739         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4740         add_ldflags -Wl,--target1-abs,--no-undefined \
4741                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4742                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4743         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4744                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4745                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4746         ;;
4747     osf1)
4748         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4749         ;;
4750     minix)
4751         ;;
4752     plan9)
4753         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4754                      -D_REENTRANT_SOURCE        \
4755                      -D_RESEARCH_SOURCE         \
4756                      -DFD_SETSIZE=96            \
4757                      -DHAVE_SOCK_OPTS
4758         add_compat strtod.o strtod=avpriv_strtod
4759         network_extralibs='-lbsd'
4760         exeobjs=compat/plan9/main.o
4761         disable ffserver
4762         cp_f='cp'
4763         ;;
4764     none)
4765         ;;
4766     *)
4767         die "Unknown OS '$target_os'."
4768         ;;
4769 esac
4770
4771 # test if creating links works
4772 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4773 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4774 mkdir "$link_dest"
4775 $ln_s "$link_dest" "$link_name"
4776 touch "$link_dest/test_file"
4777 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4778     # create link to source path
4779     [ -e src ] && rm src
4780     $ln_s "$source_path" src
4781     source_link=src
4782 else
4783     # creating directory links doesn't work
4784     # fall back to using the full source path
4785     source_link="$source_path"
4786 fi
4787 # cleanup
4788 rm -r "$link_dest"
4789 rm -r "$link_name"
4790
4791 # determine libc flavour
4792
4793 probe_libc(){
4794     pfx=$1
4795     pfx_no_=${pfx%_}
4796     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4797     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4798         eval ${pfx}libc_type=uclibc
4799         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4800     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4801         eval ${pfx}libc_type=glibc
4802         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4803     # MinGW headers can be installed on Cygwin, so check for newlib first.
4804     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4805         eval ${pfx}libc_type=newlib
4806         add_${pfx}cppflags -U__STRICT_ANSI__
4807     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4808     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4809         eval ${pfx}libc_type=mingw64
4810         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4811             add_compat msvcrt/snprintf.o
4812             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4813         fi
4814         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4815         eval test \$${pfx_no_}cc_type = "gcc" &&
4816             add_${pfx}cppflags -D__printf__=__gnu_printf__
4817     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4818          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4819         eval ${pfx}libc_type=mingw32
4820         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4821             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4822             die "ERROR: MinGW32 runtime version must be >= 3.15."
4823         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4824         eval test \$${pfx_no_}cc_type = "gcc" &&
4825             add_${pfx}cppflags -D__printf__=__gnu_printf__
4826     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4827         eval ${pfx}libc_type=msvcrt
4828         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4829             if [ "$pfx" = host_ ]; then
4830                 add_host_cppflags -Dsnprintf=_snprintf
4831             else
4832                 add_compat strtod.o strtod=avpriv_strtod
4833                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4834                                              _snprintf=avpriv_snprintf  \
4835                                              vsnprintf=avpriv_vsnprintf
4836             fi
4837         fi
4838         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4839         # 0x601 by default unless something else is set by the user.
4840         # This can easily lead to us detecting functions only present
4841         # in such new versions and producing binaries requiring windows 7.0.
4842         # Therefore explicitly set the default to XP unless the user has
4843         # set something else on the command line.
4844         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4845         # family. For these cases, configure is free to use any functions
4846         # found in the SDK headers by default. (Alternatively, we could force
4847         # _WIN32_WINNT to 0x0602 in that case.)
4848         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4849             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4850 #ifdef WINAPI_FAMILY
4851 #include <winapifamily.h>
4852 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4853 #error not desktop
4854 #endif
4855 #endif
4856 EOF
4857     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4858         eval ${pfx}libc_type=klibc
4859     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4860         eval ${pfx}libc_type=bionic
4861     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4862         eval ${pfx}libc_type=solaris
4863         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4864     fi
4865     check_${pfx}cc <<EOF
4866 #include <time.h>
4867 void *v = localtime_r;
4868 EOF
4869 test "$?" != 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
4870 #include <time.h>
4871 void *v = localtime_r;
4872 EOF
4873
4874 }
4875
4876 probe_libc
4877 test -n "$libc_type" && enable libc_$libc_type
4878 probe_libc host_
4879 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4880
4881 case $libc_type in
4882     bionic)
4883         add_compat strtod.o strtod=avpriv_strtod
4884         ;;
4885 esac
4886
4887 # hacks for compiler/libc/os combinations
4888
4889 if enabled_all tms470 libc_glibc; then
4890     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4891     add_cppflags -D__USER_LABEL_PREFIX__=
4892     add_cppflags -D__builtin_memset=memset
4893     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4894     add_cflags   -pds=48    # incompatible redefinition of macro
4895 fi
4896
4897 if enabled_all ccc libc_glibc; then
4898     add_ldflags -Wl,-z,now  # calls to libots crash without this
4899 fi
4900
4901 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4902     add_cppflags '-I\$(SRC_PATH)/compat/float'
4903
4904 esc(){
4905     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4906 }
4907
4908 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4909
4910 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4911
4912 set_default libdir
4913 : ${shlibdir_default:="$libdir"}
4914 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4915
4916 set_default $PATHS_LIST
4917 set_default nm
4918
4919 # we need to build at least one lib type
4920 if ! enabled_any static shared; then
4921     cat <<EOF
4922 At least one library type must be built.
4923 Specify --enable-static to build the static libraries or --enable-shared to
4924 build the shared libraries as well. To only build the shared libraries specify
4925 --disable-static in addition to --enable-shared.
4926 EOF
4927     exit 1;
4928 fi
4929
4930 die_license_disabled() {
4931     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4932 }
4933
4934 die_license_disabled_gpl() {
4935     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4936 }
4937
4938 die_license_disabled gpl frei0r
4939 die_license_disabled gpl libcdio
4940 die_license_disabled gpl librubberband
4941 die_license_disabled gpl libsmbclient
4942 die_license_disabled gpl libutvideo
4943 die_license_disabled gpl libvidstab
4944 die_license_disabled gpl libx264
4945 die_license_disabled gpl libx265
4946 die_license_disabled gpl libxavs
4947 die_license_disabled gpl libxvid
4948 die_license_disabled gpl x11grab
4949
4950 die_license_disabled nonfree cuda
4951 die_license_disabled nonfree libfaac
4952 die_license_disabled nonfree nvenc
4953 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4954 enabled gpl && die_license_disabled_gpl nonfree openssl
4955
4956 die_license_disabled version3 gmp
4957 die_license_disabled version3 libopencore_amrnb
4958 die_license_disabled version3 libopencore_amrwb
4959 die_license_disabled version3 libsmbclient
4960 die_license_disabled version3 libvo_amrwbenc
4961
4962 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4963
4964 disabled optimizations || check_cflags -fomit-frame-pointer
4965
4966 enable_weak_pic() {
4967     disabled pic && return
4968     enable pic
4969     add_cppflags -DPIC
4970     case "$target_os" in
4971     mingw*|cygwin*)
4972         ;;
4973     *)
4974         add_cflags -fPIC
4975         ;;
4976     esac
4977     add_asflags  -fPIC
4978 }
4979
4980 enabled pic && enable_weak_pic
4981
4982 check_cc <<EOF || die "Symbol mangling check failed."
4983 int ff_extern;
4984 EOF
4985 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4986 extern_prefix=${sym%%ff_extern*}
4987
4988 check_cc <<EOF && enable_weak inline_asm
4989 void foo(void) { __asm__ volatile ("" ::); }
4990 EOF
4991
4992 _restrict=
4993 for restrict_keyword in restrict __restrict__ __restrict; do
4994     check_cc <<EOF && _restrict=$restrict_keyword && break
4995 void foo(char * $restrict_keyword p);
4996 EOF
4997 done
4998
4999 check_cc <<EOF && enable pragma_deprecated
5000 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5001 EOF
5002
5003 check_cc <<EOF && enable attribute_packed
5004 struct { int x; } __attribute__((packed)) x;
5005 EOF
5006
5007 check_cc <<EOF && enable attribute_may_alias
5008 union { int x; } __attribute__((may_alias)) x;
5009 EOF
5010
5011 check_cc <<EOF || die "endian test failed"
5012 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5013 EOF
5014 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5015
5016 if ! enabled ppc64 || enabled bigendian; then
5017     disable vsx
5018 fi
5019
5020 check_gas() {
5021     log "check_gas using '$as' as AS"
5022     # :vararg is used on aarch64, arm and ppc altivec
5023     check_as <<EOF || return 1
5024 .macro m n, y:vararg=0
5025 \n: .int \y
5026 .endm
5027 m x
5028 EOF
5029     # .altmacro is only used in arm asm
5030     ! enabled arm || check_as <<EOF || return 1
5031 .altmacro
5032 EOF
5033     enable gnu_as
5034     return 0
5035 }
5036
5037 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5038     nogas=:
5039     enabled_any arm aarch64 && nogas=die
5040     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5041     as_noop=-v
5042
5043     case $as_type in
5044         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5045         gcc)  gaspp_as_type=gas ;;
5046         *)    gaspp_as_type=$as_type ;;
5047     esac
5048
5049     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5050
5051     test "${as#*gas-preprocessor.pl}" != "$as" ||
5052     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5053         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5054
5055     if ! check_gas ; then
5056         as=${gas:=$as}
5057         check_gas || \
5058             $nogas "GNU assembler not found, install/update gas-preprocessor"
5059     fi
5060
5061     check_as <<EOF && enable as_func
5062 .func test
5063 .endfunc
5064 EOF
5065 fi
5066
5067 check_inline_asm inline_asm_labels '"1:\n"'
5068
5069 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5070
5071 if enabled aarch64; then
5072     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5073     # internal assembler in clang 3.3 does not support this instruction
5074     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5075     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5076
5077     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5078
5079 elif enabled alpha; then
5080
5081     check_cflags -mieee
5082
5083 elif enabled arm; then
5084
5085     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5086
5087     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5088 float func(float a, float b){ return a+b; }
5089 EOF
5090
5091     enabled thumb && check_cflags -mthumb || check_cflags -marm
5092
5093     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5094         enable vfp_args
5095     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5096         enable vfp_args
5097     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5098         case "${cross_prefix:-$cc}" in
5099             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5100             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5101 __asm__ (".eabi_attribute 28, 1");
5102 int main(void) { return 0; }
5103 EOF
5104         esac
5105         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5106     fi
5107
5108     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5109     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5110     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5111     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5112     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5113     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5114     enabled setend  && check_insn setend  'setend be'
5115
5116     [ $target_os = linux ] || [ $target_os = android ] ||
5117         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5118             $ARCH_EXT_LIST_ARM
5119
5120     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5121
5122     check_as <<EOF && enable as_dn_directive
5123 ra .dn d0.i16
5124 .unreq ra
5125 EOF
5126
5127     # llvm's integrated assembler supports .object_arch from llvm 3.5
5128     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5129 .object_arch armv4
5130 EOF
5131
5132     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5133
5134 elif enabled mips; then
5135
5136     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5137     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5138     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5139
5140     # Enable minimum ISA based on selected options
5141     if enabled mips64; then
5142         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5143         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5144         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5145     else
5146         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5147         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5148         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5149         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5150     fi
5151
5152     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5153     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5154     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5155     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5156     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5157
5158 elif enabled parisc; then
5159
5160     if enabled gcc; then
5161         case $($cc -dumpversion) in
5162             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5163         esac
5164     fi
5165
5166 elif enabled ppc; then
5167
5168     enable local_aligned_8 local_aligned_16 local_aligned_32
5169
5170     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5171     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5172     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5173     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5174
5175     # AltiVec flags: The FSF version of GCC differs from the Apple version
5176     if enabled altivec; then
5177         check_cflags -maltivec -mabi=altivec &&
5178         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5179         check_cflags -faltivec
5180
5181         # check if our compiler supports Motorola AltiVec C API
5182         check_cc <<EOF || disable altivec
5183 $inc_altivec_h
5184 int main(void) {
5185     vector signed int v1 = (vector signed int) { 0 };
5186     vector signed int v2 = (vector signed int) { 1 };
5187     v1 = vec_add(v1, v2);
5188     return 0;
5189 }
5190 EOF
5191
5192         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5193     fi
5194
5195     if enabled vsx; then
5196         check_cflags -mvsx &&
5197         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5198     fi
5199
5200     if enabled power8; then
5201         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5202     fi
5203
5204 elif enabled x86; then
5205
5206     check_builtin rdtsc    intrin.h   "__rdtsc()"
5207     check_builtin mm_empty mmintrin.h "_mm_empty()"
5208
5209     enable local_aligned_8 local_aligned_16 local_aligned_32
5210
5211     # check whether EBP is available on x86
5212     # As 'i' is stored on the stack, this program will crash
5213     # if the base pointer is used to access it because the
5214     # base pointer is cleared in the inline assembly code.
5215     check_exec_crash <<EOF && enable ebp_available
5216 volatile int i=0;
5217 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5218 return i;
5219 EOF
5220
5221     # check whether EBX is available on x86
5222     check_inline_asm ebx_available '""::"b"(0)' &&
5223         check_inline_asm ebx_available '"":::"%ebx"'
5224
5225     # check whether xmm clobbers are supported
5226     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5227
5228     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5229         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5230
5231     # check whether binutils is new enough to compile SSSE3/MMXEXT
5232     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5233     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5234
5235     if ! disabled_any asm mmx yasm; then
5236         if check_cmd $yasmexe --version; then
5237             enabled x86_64 && yasm_extra="-m amd64"
5238             yasm_debug="-g dwarf2"
5239         elif check_cmd nasm -v; then
5240             yasmexe=nasm
5241             yasm_debug="-g -F dwarf"
5242             if enabled x86_64; then
5243                 case "$objformat" in
5244                     elf)   objformat=elf64 ;;
5245                     win32) objformat=win64 ;;
5246                 esac
5247             fi
5248         fi
5249
5250         YASMFLAGS="-f $objformat $yasm_extra"
5251         enabled pic               && append YASMFLAGS "-DPIC"
5252         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5253         case "$objformat" in
5254             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5255         esac
5256
5257         check_yasm "movbe ecx, [5]" && enable yasm ||
5258             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5259         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5260         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5261         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5262         check_yasm "CPU amdnop" || disable cpunop
5263     fi
5264
5265     case "$cpu" in
5266         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5267             disable fast_clz
5268         ;;
5269     esac
5270
5271 fi
5272
5273 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5274
5275 check_ldflags -Wl,--as-needed
5276 check_ldflags -Wl,-z,noexecstack
5277
5278 if check_func dlopen; then
5279     ldl=
5280 elif check_func dlopen -ldl; then
5281     ldl=-ldl
5282 fi
5283
5284 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5285 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5286 frei0r_filter_extralibs='$ldl'
5287 frei0r_src_filter_extralibs='$ldl'
5288 ladspa_filter_extralibs='$ldl'
5289 nvenc_encoder_extralibs='$ldl'
5290 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5291 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5292
5293 if ! disabled network; then
5294     check_func getaddrinfo $network_extralibs
5295     check_func inet_aton $network_extralibs
5296
5297     check_type netdb.h "struct addrinfo"
5298     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5299     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5300     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5301     check_type poll.h "struct pollfd"
5302     check_type netinet/sctp.h "struct sctp_event_subscribe"
5303     check_struct "sys/socket.h" "struct msghdr" msg_flags
5304     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5305     check_type netinet/in.h "struct sockaddr_in6"
5306     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5307     check_type "sys/types.h sys/socket.h" socklen_t
5308
5309     # Prefer arpa/inet.h over winsock2
5310     if check_header arpa/inet.h ; then
5311         check_func closesocket
5312     elif check_header winsock2.h ; then
5313         check_func_headers winsock2.h closesocket -lws2 &&
5314             network_extralibs="-lws2" ||
5315         { check_func_headers winsock2.h closesocket -lws2_32 &&
5316             network_extralibs="-lws2_32"; } || disable winsock2_h network
5317         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5318
5319         check_type ws2tcpip.h socklen_t
5320         check_type ws2tcpip.h "struct addrinfo"
5321         check_type ws2tcpip.h "struct group_source_req"
5322         check_type ws2tcpip.h "struct ip_mreq_source"
5323         check_type ws2tcpip.h "struct ipv6_mreq"
5324         check_type winsock2.h "struct pollfd"
5325         check_struct winsock2.h "struct sockaddr" sa_len
5326         check_type ws2tcpip.h "struct sockaddr_in6"
5327         check_type ws2tcpip.h "struct sockaddr_storage"
5328     else
5329         disable network
5330     fi
5331 fi
5332
5333 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5334 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5335 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5336 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5337 check_builtin sarestart signal.h "SA_RESTART"
5338 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5339 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5340 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5341 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5342
5343 case "$custom_allocator" in
5344     jemalloc)
5345         # jemalloc by default does not use a prefix
5346         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5347     ;;
5348     tcmalloc)
5349         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5350         malloc_prefix=tc_
5351     ;;
5352 esac
5353
5354 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5355 check_func  ${malloc_prefix}memalign            && enable memalign
5356 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5357
5358 check_func  access
5359 check_func  arc4random
5360 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5361 check_func  fcntl
5362 check_func  fork
5363 check_func  gethrtime
5364 check_func  getopt
5365 check_func  getrusage
5366 check_func  gettimeofday
5367 check_func  isatty
5368 check_func  mach_absolute_time
5369 check_func  mkstemp
5370 check_func  mmap
5371 check_func  mprotect
5372 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5373 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5374 check_func  sched_getaffinity
5375 check_func  setrlimit
5376 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5377 check_func  strerror_r
5378 check_func  sysconf
5379 check_func  sysctl
5380 check_func  usleep
5381
5382 check_func_headers conio.h kbhit
5383 check_func_headers io.h setmode
5384 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5385 check_func_headers stdlib.h getenv
5386 check_func_headers sys/stat.h lstat
5387
5388 check_func_headers windows.h CoTaskMemFree -lole32
5389 check_func_headers windows.h GetProcessAffinityMask
5390 check_func_headers windows.h GetProcessTimes
5391 check_func_headers windows.h GetSystemTimeAsFileTime
5392 check_func_headers windows.h MapViewOfFile
5393 check_func_headers windows.h PeekNamedPipe
5394 check_func_headers windows.h SetConsoleTextAttribute
5395 check_func_headers windows.h SetConsoleCtrlHandler
5396 check_func_headers windows.h Sleep
5397 check_func_headers windows.h VirtualAlloc
5398 check_struct windows.h "CONDITION_VARIABLE" Ptr
5399 check_func_headers glob.h glob
5400 enabled xlib &&
5401     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5402
5403 check_header AudioToolbox/AudioToolbox.h
5404 check_header direct.h
5405 check_header dirent.h
5406 check_header dlfcn.h
5407 check_header d3d11.h
5408 check_header dxva.h
5409 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5410 check_header io.h
5411 check_header libcrystalhd/libcrystalhd_if.h
5412 check_header mach/mach_time.h
5413 check_header malloc.h
5414 check_header net/udplite.h
5415 check_header poll.h
5416 check_header sys/mman.h
5417 check_header sys/param.h
5418 check_header sys/resource.h
5419 check_header sys/select.h
5420 check_header sys/time.h
5421 check_header sys/un.h
5422 check_header termios.h
5423 check_header unistd.h
5424 check_header valgrind/valgrind.h
5425 check_header vdpau/vdpau.h
5426 check_header vdpau/vdpau_x11.h
5427 check_header VideoDecodeAcceleration/VDADecoder.h
5428 check_header VideoToolbox/VideoToolbox.h
5429 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5430 check_header windows.h
5431 check_header X11/extensions/XvMClib.h
5432 check_header asm/types.h
5433
5434 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5435 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5436 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5437 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5438
5439 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5440
5441 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5442 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5443 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5444 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5445 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5446
5447 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5448 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5449
5450 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5451
5452 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5453
5454 if ! disabled w32threads && ! enabled pthreads; then
5455     check_func_headers "windows.h process.h" _beginthreadex &&
5456         enable w32threads || disable w32threads
5457     if ! enabled w32threads && enabled winrt; then
5458         check_func_headers "windows.h" CreateThread &&
5459             enable w32threads || disable w32threads
5460     fi
5461 fi
5462
5463 # check for some common methods of building with pthread support
5464 # do this before the optional library checks as some of them require pthreads
5465 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5466     enable pthreads
5467     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5468         add_cflags -pthread
5469         add_extralibs -pthread
5470     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5471         add_cflags -pthreads
5472         add_extralibs -pthreads
5473     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5474         add_cflags -ldl -pthread
5475         add_extralibs -ldl -pthread
5476     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5477         add_extralibs -lpthreadGC2
5478     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5479         :
5480     elif ! check_func pthread_join && ! check_func pthread_create; then
5481         disable pthreads
5482     fi
5483     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5484 fi
5485
5486
5487 if enabled pthreads; then
5488   check_func pthread_cancel
5489 fi
5490
5491 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5492 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5493 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5494
5495 check_lib math.h sin -lm && LIBM="-lm"
5496 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5497
5498 atan2f_args=2
5499 copysign_args=2
5500 hypot_args=2
5501 ldexpf_args=2
5502 powf_args=2
5503
5504 for func in $MATH_FUNCS; do
5505     eval check_mathfunc $func \${${func}_args:-1}
5506 done
5507
5508 for func in $COMPLEX_FUNCS; do
5509     eval check_complexfunc $func \${${func}_args:-1}
5510 done
5511
5512 # these are off by default, so fail if requested and not available
5513 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5514 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5515                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5516 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5517                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5518                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5519 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5520                                die "ERROR: CUDA not found"; }
5521 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5522 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5523 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5524 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5525 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5526 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5527 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5528 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5529                                check_lib2 "dlfcn.h" dlopen -ldl; }
5530 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5531 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5532 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5533 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5534 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5535 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5536                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5537                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5538 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5539 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5540 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5541                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5542                                  warn "using libfdk without pkg-config"; } }
5543 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"
5544 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5545 enabled fontconfig        && enable libfontconfig
5546 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5547 enabled libfreetype       && require_libfreetype
5548 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5549 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5550 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5551                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5552                                done || die "ERROR: libgsm not found"; }
5553 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5554 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5555 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5556 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5557 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5558 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5559 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5560 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5561 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5562                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5563                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5564                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5565 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5566 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5567                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5568                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5569                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5570                                die "ERROR: libopenjpeg not found"; }
5571 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5572 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5573 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5574 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5575 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5576 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5577 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5578                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5579 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5580 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5581 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5582 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5583 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5584 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5585 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5586                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5587                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5588 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5589 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5590 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5591 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5592 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5593
5594 enabled libvpx            && {
5595     enabled libvpx_vp8_decoder && {
5596         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5597             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5598                 die "ERROR: libvpx decoder version must be >=0.9.1";
5599     }
5600     enabled libvpx_vp8_encoder && {
5601         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5602             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5603                 die "ERROR: libvpx encoder version must be >=0.9.7";
5604     }
5605     enabled libvpx_vp9_decoder && {
5606         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5607             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5608                 disable libvpx_vp9_decoder;
5609     }
5610     enabled libvpx_vp9_encoder && {
5611         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5612             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5613                 disable libvpx_vp9_encoder;
5614     }
5615     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5616         die "libvpx enabled but no supported decoders found"
5617     fi
5618 }
5619
5620 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5621 enabled libwebp           && {
5622     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5623     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5624 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5625                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5626                                  warn "using libx264 without pkg-config"; } } &&
5627                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5628                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5629                              { check_cpp_condition x264.h "X264_MPEG2" &&
5630                                enable libx262; }
5631 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5632                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5633                                die "ERROR: libx265 version must be >= 68."; }
5634 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5635 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5636 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5637 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5638 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5639                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5640                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5641 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5642 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5643                                 { ! enabled cross_compile && {
5644                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5645                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5646                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5647                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5648                                die "ERROR: mmal not found"; }
5649 enabled mmal &&
5650     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5651      die "ERROR: mmal firmware headers too old")
5652
5653 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5654 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5655                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5656                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5657                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5658 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5659                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5660                                die "ERROR: openal not found"; } &&
5661                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5662                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5663 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5664                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5665                                die "ERROR: opencl not found"; } &&
5666                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5667                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5668                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5669 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5670                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5671                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5672                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5673                                die "ERROR: opengl not found."
5674                              }
5675 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5676                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5677                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5678                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5679                                die "ERROR: openssl not found"; }
5680 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5681
5682 # libdc1394 check
5683 if enabled libdc1394; then
5684     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5685         enable libdc1394_2; } ||
5686     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5687         enable libdc1394_1; } ||
5688     die "ERROR: No version of libdc1394 found "
5689 fi
5690
5691 if enabled gcrypt; then
5692     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5693     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5694         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5695         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5696         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5697             die "ERROR: gcrypt not found"
5698         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5699     else
5700         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5701     fi
5702 fi
5703
5704 if ! disabled sdl; then
5705     SDL_CONFIG="${cross_prefix}sdl-config"
5706     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5707         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5708         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5709         enable sdl
5710     else
5711         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5712             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5713             sdl_libs=$("${SDL_CONFIG}" --libs)
5714             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5715             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5716             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5717             enable sdl
5718         elif enabled sdl ; then
5719             die "ERROR: SDL not found"
5720         else
5721             disable sdl
5722         fi
5723     fi
5724     if test $target_os = "mingw32"; then
5725         sdl_libs="$sdl_libs -mconsole"
5726     fi
5727 fi
5728 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5729
5730 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5731     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5732     enable securetransport; }
5733
5734 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5735                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5736
5737 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5738 enabled makeinfo \
5739     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5740     && enable makeinfo_html || disable makeinfo_html
5741 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5742 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5743 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5744 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5745
5746 check_header linux/fb.h
5747 check_header linux/videodev.h
5748 check_header linux/videodev2.h
5749 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5750
5751 check_header sys/videoio.h
5752 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5753
5754 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5755 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5756 # w32api 3.12 had it defined wrong
5757 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5758
5759 check_type "dshow.h" IBaseFilter
5760
5761 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5762 { check_header dev/bktr/ioctl_meteor.h &&
5763   check_header dev/bktr/ioctl_bt848.h; } ||
5764 { check_header machine/ioctl_meteor.h &&
5765   check_header machine/ioctl_bt848.h; } ||
5766 { check_header dev/video/meteor/ioctl_meteor.h &&
5767   check_header dev/video/bktr/ioctl_bt848.h; } ||
5768 check_header dev/ic/bt8xx.h
5769
5770 check_header sndio.h
5771 if check_struct sys/soundcard.h audio_buf_info bytes; then
5772     enable_safe sys/soundcard.h
5773 else
5774     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5775     #include <sys/soundcard.h>
5776     audio_buf_info abc;
5777 EOF
5778 fi
5779 check_header soundcard.h
5780
5781 enabled_any alsa_indev alsa_outdev &&
5782     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5783
5784 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5785     check_func jack_port_get_latency_range -ljack
5786
5787 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5788
5789 if enabled libcdio; then
5790     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5791     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5792     die "ERROR: No usable libcdio/cdparanoia found"
5793 fi
5794
5795 enabled xlib &&
5796     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5797
5798 if ! disabled libxcb; then
5799     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5800         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5801     } && disable x11grab && enable libxcb
5802
5803 if enabled libxcb; then
5804     disabled libxcb_shm || {
5805         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5806             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5807         } && check_header sys/shm.h && enable libxcb_shm; }
5808
5809     disabled libxcb_xfixes || {
5810         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5811             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5812         } && enable libxcb_xfixes; }
5813
5814     disabled libxcb_shape || {
5815         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5816             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5817         } && enable libxcb_shape; }
5818
5819     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5820     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5821 fi
5822 fi
5823
5824 if enabled x11grab; then
5825     enabled xlib || die "ERROR: Xlib not found"
5826     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5827     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5828 fi
5829
5830 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5831
5832 enabled dxva2api_h &&
5833     check_cc <<EOF && enable dxva2api_cobj
5834 #define _WIN32_WINNT 0x0600
5835 #define COBJMACROS
5836 #include <windows.h>
5837 #include <d3d9.h>
5838 #include <dxva2api.h>
5839 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5840 EOF
5841
5842 enabled vaapi &&
5843     check_lib va/va.h vaInitialize -lva ||
5844     disable vaapi
5845
5846 enabled vaapi && enabled xlib &&
5847     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5848     enable vaapi_x11
5849
5850 enabled vdpau &&
5851     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5852     disable vdpau
5853
5854 enabled vdpau && enabled xlib &&
5855     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5856     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5857     enable vdpau_x11
5858
5859 # Funny iconv installations are not unusual, so check it after all flags have been set
5860 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5861
5862 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5863
5864 # add some useful compiler flags if supported
5865 check_cflags -Wdeclaration-after-statement
5866 check_cflags -Wall
5867 check_cflags -Wdisabled-optimization
5868 check_cflags -Wpointer-arith
5869 check_cflags -Wredundant-decls
5870 check_cflags -Wwrite-strings
5871 check_cflags -Wtype-limits
5872 check_cflags -Wundef
5873 check_cflags -Wmissing-prototypes
5874 check_cflags -Wno-pointer-to-int-cast
5875 check_cflags -Wstrict-prototypes
5876 check_cflags -Wempty-body
5877 enabled extra_warnings && check_cflags -Winline
5878 enabled extra_warnings && check_cflags -Wcast-qual
5879
5880 check_disable_warning(){
5881     warning_flag=-W${1#-Wno-}
5882     test_cflags $warning_flag && add_cflags $1
5883 }
5884
5885 check_disable_warning -Wno-parentheses
5886 check_disable_warning -Wno-switch
5887 check_disable_warning -Wno-format-zero-length
5888 check_disable_warning -Wno-pointer-sign
5889 check_disable_warning -Wno-unused-const-variable
5890
5891 # add some linker flags
5892 check_ldflags -Wl,--warn-common
5893 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5894 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5895 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5896 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5897
5898 # add some strip flags
5899 # -wN '..@*' is more selective than -x, but not available everywhere.
5900 check_stripflags -wN \'..@*\' || check_stripflags -x
5901
5902 enabled neon_clobber_test &&
5903     check_ldflags -Wl,--wrap,avcodec_open2              \
5904                   -Wl,--wrap,avcodec_decode_audio4      \
5905                   -Wl,--wrap,avcodec_decode_video2      \
5906                   -Wl,--wrap,avcodec_decode_subtitle2   \
5907                   -Wl,--wrap,avcodec_encode_audio2      \
5908                   -Wl,--wrap,avcodec_encode_video2      \
5909                   -Wl,--wrap,avcodec_encode_subtitle    \
5910                   -Wl,--wrap,swr_convert                \
5911                   -Wl,--wrap,avresample_convert ||
5912     disable neon_clobber_test
5913
5914 enabled xmm_clobber_test &&
5915     check_ldflags -Wl,--wrap,avcodec_open2              \
5916                   -Wl,--wrap,avcodec_decode_audio4      \
5917                   -Wl,--wrap,avcodec_decode_video2      \
5918                   -Wl,--wrap,avcodec_decode_subtitle2   \
5919                   -Wl,--wrap,avcodec_encode_audio2      \
5920                   -Wl,--wrap,avcodec_encode_video2      \
5921                   -Wl,--wrap,avcodec_encode_subtitle    \
5922                   -Wl,--wrap,swr_convert                \
5923                   -Wl,--wrap,avresample_convert         \
5924                   -Wl,--wrap,sws_scale ||
5925     disable xmm_clobber_test
5926
5927 echo "X { local: *; };" > $TMPV
5928 if test_ldflags -Wl,--version-script,$TMPV; then
5929     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5930 elif test_ldflags -Wl,-M,$TMPV; then
5931     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5932 fi
5933
5934 check_cc <<EOF && enable symver_asm_label
5935 void ff_foo(void) __asm__ ("av_foo@VERSION");
5936 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5937 EOF
5938     check_cc <<EOF && enable symver_gnu_asm
5939 __asm__(".symver ff_foo,av_foo@VERSION");
5940 void ff_foo(void) {}
5941 EOF
5942
5943 if [ -z "$optflags" ]; then
5944     if enabled small; then
5945         optflags=$cflags_size
5946     elif enabled optimizations; then
5947         optflags=$cflags_speed
5948     else
5949         optflags=$cflags_noopt
5950     fi
5951 fi
5952
5953 check_optflags(){
5954     check_cflags "$@"
5955     enabled lto && check_ldflags "$@"
5956 }
5957
5958
5959 if enabled lto; then
5960     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5961     check_cflags  -flto
5962     check_ldflags -flto $cpuflags
5963     disable inline_asm_direct_symbol_refs
5964 fi
5965
5966 check_optflags $optflags
5967 check_optflags -fno-math-errno
5968 check_optflags -fno-signed-zeros
5969
5970 enabled ftrapv && check_cflags -ftrapv
5971
5972 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5973 int x;
5974 EOF
5975
5976
5977 if enabled icc; then
5978     # Just warnings, no remarks
5979     check_cflags -w1
5980     # -wd: Disable following warnings
5981     # 144, 167, 556: -Wno-pointer-sign
5982     # 188: enumerated type mixed with another type
5983     # 1292: attribute "foo" ignored
5984     # 1419: external declaration in primary source file
5985     # 10006: ignoring unknown option -fno-signed-zeros
5986     # 10148: ignoring unknown option -Wno-parentheses
5987     # 10156: ignoring option '-W'; no argument required
5988     # 13200: No EMMS instruction before call to function
5989     # 13203: No EMMS instruction before return from function
5990     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5991     # 11030: Warning unknown option --as-needed
5992     # 10156: ignoring option '-export'; no argument required
5993     check_ldflags -wd10156,11030
5994     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5995     enable ebp_available
5996     # The test above does not test linking
5997     enabled lto && disable symver_asm_label
5998     if enabled x86_32; then
5999         icc_version=$($cc -dumpversion)
6000         test ${icc_version%%.*} -ge 11 &&
6001             check_cflags -falign-stack=maintain-16-byte ||
6002             disable aligned_stack
6003     fi
6004 elif enabled ccc; then
6005     # disable some annoying warnings
6006     add_cflags -msg_disable bitnotint
6007     add_cflags -msg_disable mixfuncvoid
6008     add_cflags -msg_disable nonstandcast
6009     add_cflags -msg_disable unsupieee
6010 elif enabled gcc; then
6011     case $gcc_basever in
6012         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
6013         4.*)                 check_optflags -fno-tree-vectorize ;;
6014         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
6015     esac
6016     check_cflags -Werror=format-security
6017     check_cflags -Werror=implicit-function-declaration
6018     check_cflags -Werror=missing-prototypes
6019     check_cflags -Werror=return-type
6020     check_cflags -Werror=vla
6021     check_cflags -Wformat
6022     check_cflags -fdiagnostics-color=auto
6023     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6024 elif enabled llvm_gcc; then
6025     check_cflags -mllvm -stack-alignment=16
6026 elif enabled clang; then
6027     check_cflags -mllvm -stack-alignment=16
6028     check_cflags -Qunused-arguments
6029     check_cflags -Werror=implicit-function-declaration
6030     check_cflags -Werror=missing-prototypes
6031     check_cflags -Werror=return-type
6032 elif enabled cparser; then
6033     add_cflags -Wno-missing-variable-declarations
6034     add_cflags -Wno-empty-statement
6035 elif enabled armcc; then
6036     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6037     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6038     # 2523: use of inline assembly is deprecated
6039     add_cflags -W${armcc_opt},--diag_suppress=2523
6040     add_cflags -W${armcc_opt},--diag_suppress=1207
6041     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6042     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6043     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6044     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6045 elif enabled tms470; then
6046     add_cflags -pds=824 -pds=837
6047     disable inline_asm
6048 elif enabled pathscale; then
6049     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6050 elif enabled_any msvc icl; then
6051     enabled x86_32 && disable aligned_stack
6052     enabled_all x86_32 debug && add_cflags -Oy-
6053     enabled debug && add_ldflags -debug
6054     enable pragma_deprecated
6055     if enabled icl; then
6056         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6057         # (correctly) on icl 13.x.
6058         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6059             add_cflags -Qansi-alias
6060         # Some inline asm is not compilable in debug
6061         if enabled debug; then
6062             disable ebp_available
6063             disable ebx_available
6064         fi
6065     fi
6066     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6067     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6068     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6069     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6070     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6071     # MSVC 2013 and newer can handle it fine.
6072     # If this declspec fails, force including stdlib.h before the restrict redefinition
6073     # happens in config.h.
6074     if [ $_restrict != restrict ]; then
6075         check_cc <<EOF || add_cflags -FIstdlib.h
6076 __declspec($_restrict) void* foo(int);
6077 EOF
6078     fi
6079     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6080 fi
6081
6082 for pfx in "" host_; do
6083     varname=${pfx%_}cc_type
6084     eval "type=\$$varname"
6085     if [ $type = "msvc" ]; then
6086         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6087 static inline int foo(int a) { return a; }
6088 EOF
6089     fi
6090 done
6091
6092 case $as_type in
6093     clang)
6094         add_asflags -Qunused-arguments
6095     ;;
6096 esac
6097
6098 case $ld_type in
6099     clang)
6100         check_ldflags -Qunused-arguments
6101     ;;
6102 esac
6103
6104 case $target_os in
6105     osf1)
6106         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6107     ;;
6108     plan9)
6109         add_cppflags -Dmain=plan9_main
6110     ;;
6111 esac
6112
6113 enable frame_thread_encoder
6114
6115 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6116
6117 check_deps $CONFIG_LIST       \
6118            $CONFIG_EXTRA      \
6119            $HAVE_LIST         \
6120            $ALL_COMPONENTS    \
6121
6122 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"
6123
6124
6125 if test $target_os = "haiku"; then
6126     disable memalign
6127     disable posix_memalign
6128 fi
6129
6130 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6131     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6132     enable dxva2_lib
6133
6134 ! enabled_any memalign posix_memalign aligned_malloc &&
6135     enabled simd_align_16 && enable memalign_hack
6136
6137 # add_dep lib dep
6138 # -> enable ${lib}_deps_${dep}
6139 # -> add $dep to ${lib}_deps only once
6140 add_dep() {
6141     lib=$1
6142     dep=$2
6143     enabled "${lib}_deps_${dep}" && return 0
6144     enable  "${lib}_deps_${dep}"
6145     prepend "${lib}_deps" $dep
6146 }
6147
6148 # merge deps lib components
6149 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6150 merge_deps() {
6151     lib=$1
6152     shift
6153     for comp in $*; do
6154         enabled $comp || continue
6155         eval "dep=\"\$${comp}_deps\""
6156         for d in $dep; do
6157             add_dep $lib $d
6158         done
6159     done
6160 }
6161
6162 merge_deps libavfilter $FILTER_LIST
6163
6164 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6165
6166 for thread in $THREADS_LIST; do
6167     if enabled $thread; then
6168         test -n "$thread_type" &&
6169             die "ERROR: Only one thread type must be selected." ||
6170             thread_type="$thread"
6171     fi
6172 done
6173
6174 enabled zlib && add_cppflags -DZLIB_CONST
6175
6176 # conditional library dependencies, in linking order
6177 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6178 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6179 enabled aresample_filter    && prepend avfilter_deps "swresample"
6180 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6181 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6182 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6183 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6184 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6185 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6186 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6187 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6188 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6189 enabled pan_filter          && prepend avfilter_deps "swresample"
6190 enabled pp_filter           && prepend avfilter_deps "postproc"
6191 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6192 enabled resample_filter && prepend avfilter_deps "avresample"
6193 enabled sab_filter          && prepend avfilter_deps "swscale"
6194 enabled scale_filter    && prepend avfilter_deps "swscale"
6195 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6196 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6197 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6198 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6199 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6200 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6201 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6202 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6203 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6204
6205 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6206
6207 enabled opus_decoder    && prepend avcodec_deps "swresample"
6208
6209 expand_deps(){
6210     lib_deps=${1}_deps
6211     eval "deps=\$$lib_deps"
6212     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6213     unique $lib_deps
6214 }
6215
6216 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6217 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6218
6219 map 'expand_deps $v' $LIBRARY_LIST
6220
6221 echo "install prefix            $prefix"
6222 echo "source path               $source_path"
6223 echo "C compiler                $cc"
6224 echo "C library                 $libc_type"
6225 if test "$host_cc" != "$cc"; then
6226     echo "host C compiler           $host_cc"
6227     echo "host C library            $host_libc_type"
6228 fi
6229 echo "ARCH                      $arch ($cpu)"
6230 if test "$build_suffix" != ""; then
6231     echo "build suffix              $build_suffix"
6232 fi
6233 if test "$progs_suffix" != ""; then
6234     echo "progs suffix              $progs_suffix"
6235 fi
6236 if test "$extra_version" != ""; then
6237     echo "version string suffix     $extra_version"
6238 fi
6239 echo "big-endian                ${bigendian-no}"
6240 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6241 if enabled x86; then
6242     echo "${yasmexe}                      ${yasm-no}"
6243     echo "MMX enabled               ${mmx-no}"
6244     echo "MMXEXT enabled            ${mmxext-no}"
6245     echo "3DNow! enabled            ${amd3dnow-no}"
6246     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6247     echo "SSE enabled               ${sse-no}"
6248     echo "SSSE3 enabled             ${ssse3-no}"
6249     echo "AESNI enabled             ${aesni-no}"
6250     echo "AVX enabled               ${avx-no}"
6251     echo "XOP enabled               ${xop-no}"
6252     echo "FMA3 enabled              ${fma3-no}"
6253     echo "FMA4 enabled              ${fma4-no}"
6254     echo "i686 features enabled     ${i686-no}"
6255     echo "CMOV is fast              ${fast_cmov-no}"
6256     echo "EBX available             ${ebx_available-no}"
6257     echo "EBP available             ${ebp_available-no}"
6258 fi
6259 if enabled aarch64; then
6260     echo "NEON enabled              ${neon-no}"
6261     echo "VFP enabled               ${vfp-no}"
6262 fi
6263 if enabled arm; then
6264     echo "ARMv5TE enabled           ${armv5te-no}"
6265     echo "ARMv6 enabled             ${armv6-no}"
6266     echo "ARMv6T2 enabled           ${armv6t2-no}"
6267     echo "VFP enabled               ${vfp-no}"
6268     echo "NEON enabled              ${neon-no}"
6269     echo "THUMB enabled             ${thumb-no}"
6270 fi
6271 if enabled mips; then
6272     echo "MIPS FPU enabled          ${mipsfpu-no}"
6273     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6274     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6275     echo "MIPS MSA enabled          ${msa-no}"
6276     echo "LOONGSON MMI enabled      ${mmi-no}"
6277 fi
6278 if enabled ppc; then
6279     echo "AltiVec enabled           ${altivec-no}"
6280     echo "VSX enabled               ${vsx-no}"
6281     echo "POWER8 enabled            ${power8-no}"
6282     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6283     echo "dcbzl available           ${dcbzl-no}"
6284 fi
6285 echo "debug symbols             ${debug-no}"
6286 echo "strip symbols             ${stripping-no}"
6287 echo "optimize for size         ${small-no}"
6288 echo "optimizations             ${optimizations-no}"
6289 echo "static                    ${static-no}"
6290 echo "shared                    ${shared-no}"
6291 echo "postprocessing support    ${postproc-no}"
6292 echo "new filter support        ${avfilter-no}"
6293 echo "network support           ${network-no}"
6294 echo "threading support         ${thread_type-no}"
6295 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6296 echo "SDL support               ${sdl-no}"
6297 echo "opencl enabled            ${opencl-no}"
6298 echo "JNI support               ${jni-no}"
6299 echo "texi2html enabled         ${texi2html-no}"
6300 echo "perl enabled              ${perl-no}"
6301 echo "pod2man enabled           ${pod2man-no}"
6302 echo "makeinfo enabled          ${makeinfo-no}"
6303 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6304 test -n "$random_seed" &&
6305     echo "random seed               ${random_seed}"
6306 echo
6307
6308 echo "Enabled programs:"
6309 print_enabled '' $PROGRAM_LIST | print_in_columns
6310 echo
6311
6312 echo "External libraries:"
6313 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6314 echo
6315
6316 echo "Libraries:"
6317 print_enabled '' $LIBRARY_LIST | print_in_columns
6318 echo
6319
6320 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6321     echo "Enabled ${type}s:"
6322     eval list=\$$(toupper $type)_LIST
6323     print_enabled '_*' $list | print_in_columns
6324     echo
6325 done
6326
6327 license="LGPL version 2.1 or later"
6328 if enabled nonfree; then
6329     license="nonfree and unredistributable"
6330 elif enabled gplv3; then
6331     license="GPL version 3 or later"
6332 elif enabled lgplv3; then
6333     license="LGPL version 3 or later"
6334 elif enabled gpl; then
6335     license="GPL version 2 or later"
6336 fi
6337
6338 echo "License: $license"
6339
6340 echo "Creating config.mak, config.h, and doc/config.texi..."
6341
6342 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6343
6344 enabled stripping || strip="echo skipping strip"
6345
6346 config_files="$TMPH config.mak doc/config.texi"
6347
6348 cat > config.mak <<EOF
6349 # Automatically generated by configure - do not modify!
6350 ifndef FFMPEG_CONFIG_MAK
6351 FFMPEG_CONFIG_MAK=1
6352 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6353 prefix=$prefix
6354 LIBDIR=\$(DESTDIR)$libdir
6355 SHLIBDIR=\$(DESTDIR)$shlibdir
6356 INCDIR=\$(DESTDIR)$incdir
6357 BINDIR=\$(DESTDIR)$bindir
6358 DATADIR=\$(DESTDIR)$datadir
6359 DOCDIR=\$(DESTDIR)$docdir
6360 MANDIR=\$(DESTDIR)$mandir
6361 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6362 INSTALL_NAME_DIR=$install_name_dir
6363 SRC_PATH=$source_path
6364 SRC_LINK=$source_link
6365 ifndef MAIN_MAKEFILE
6366 SRC_PATH:=\$(SRC_PATH:.%=..%)
6367 endif
6368 CC_IDENT=$cc_ident
6369 ARCH=$arch
6370 INTRINSICS=$intrinsics
6371 CC=$cc
6372 CXX=$cxx
6373 AS=$as
6374 OBJCC=$objcc
6375 LD=$ld
6376 DEPCC=$dep_cc
6377 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6378 DEPAS=$as
6379 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6380 YASM=$yasmexe
6381 DEPYASM=$yasmexe
6382 AR=$ar
6383 ARFLAGS=$arflags
6384 AR_O=$ar_o
6385 RANLIB=$ranlib
6386 STRIP=$strip
6387 CP=cp -p
6388 LN_S=$ln_s
6389 CPPFLAGS=$CPPFLAGS
6390 CFLAGS=$CFLAGS
6391 CXXFLAGS=$CXXFLAGS
6392 OBJCFLAGS=$OBJCFLAGS
6393 ASFLAGS=$ASFLAGS
6394 AS_C=$AS_C
6395 AS_O=$AS_O
6396 OBJCC_C=$OBJCC_C
6397 OBJCC_E=$OBJCC_E
6398 OBJCC_O=$OBJCC_O
6399 CC_C=$CC_C
6400 CC_E=$CC_E
6401 CC_O=$CC_O
6402 CXX_C=$CXX_C
6403 CXX_O=$CXX_O
6404 LD_O=$LD_O
6405 LD_LIB=$LD_LIB
6406 LD_PATH=$LD_PATH
6407 DLLTOOL=$dlltool
6408 WINDRES=$windres
6409 DEPWINDRES=$dep_cc
6410 DOXYGEN=$doxygen
6411 LDFLAGS=$LDFLAGS
6412 LDEXEFLAGS=$LDEXEFLAGS
6413 LDLIBFLAGS=$LDLIBFLAGS
6414 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6415 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6416 YASMFLAGS=$YASMFLAGS
6417 BUILDSUF=$build_suffix
6418 PROGSSUF=$progs_suffix
6419 FULLNAME=$FULLNAME
6420 LIBPREF=$LIBPREF
6421 LIBSUF=$LIBSUF
6422 LIBNAME=$LIBNAME
6423 SLIBPREF=$SLIBPREF
6424 SLIBSUF=$SLIBSUF
6425 EXESUF=$EXESUF
6426 EXTRA_VERSION=$extra_version
6427 CCDEP=$CCDEP
6428 CXXDEP=$CXXDEP
6429 CCDEP_FLAGS=$CCDEP_FLAGS
6430 ASDEP=$ASDEP
6431 ASDEP_FLAGS=$ASDEP_FLAGS
6432 CC_DEPFLAGS=$CC_DEPFLAGS
6433 AS_DEPFLAGS=$AS_DEPFLAGS
6434 HOSTCC=$host_cc
6435 HOSTLD=$host_ld
6436 HOSTCFLAGS=$host_cflags
6437 HOSTCPPFLAGS=$host_cppflags
6438 HOSTEXESUF=$HOSTEXESUF
6439 HOSTLDFLAGS=$host_ldflags
6440 HOSTLIBS=$host_libs
6441 DEPHOSTCC=$host_cc
6442 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6443 HOSTCCDEP=$HOSTCCDEP
6444 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6445 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6446 HOSTCC_C=$HOSTCC_C
6447 HOSTCC_O=$HOSTCC_O
6448 HOSTLD_O=$HOSTLD_O
6449 TARGET_EXEC=$target_exec $target_exec_args
6450 TARGET_PATH=$target_path
6451 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6452 CFLAGS-ffplay=$sdl_cflags
6453 ZLIB=$($ldflags_filter -lz)
6454 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6455 EXTRALIBS=$extralibs
6456 COMPAT_OBJS=$compat_objs
6457 EXEOBJS=$exeobjs
6458 INSTALL=$install
6459 LIBTARGET=${LIBTARGET}
6460 SLIBNAME=${SLIBNAME}
6461 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6462 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6463 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6464 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6465 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6466 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6467 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6468 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6469 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6470 NOREDZONE_FLAGS=$noredzone_flags
6471 EOF
6472
6473 get_version(){
6474     lcname=lib${1}
6475     name=$(toupper $lcname)
6476     file=$source_path/$lcname/version.h
6477     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6478     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6479     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6480     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6481     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6482     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6483 }
6484
6485 map 'get_version $v' $LIBRARY_LIST
6486
6487 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6488
6489 print_program_libs(){
6490     eval "program_libs=\$${1}_libs"
6491     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6492 }
6493
6494 map 'print_program_libs $v' $PROGRAM_LIST
6495
6496 cat > $TMPH <<EOF
6497 /* Automatically generated by configure - do not modify! */
6498 #ifndef FFMPEG_CONFIG_H
6499 #define FFMPEG_CONFIG_H
6500 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6501 #define FFMPEG_LICENSE "$(c_escape $license)"
6502 #define CONFIG_THIS_YEAR 2016
6503 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6504 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6505 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6506 #define av_restrict $_restrict
6507 #define EXTERN_PREFIX "${extern_prefix}"
6508 #define EXTERN_ASM ${extern_prefix}
6509 #define BUILDSUF "$build_suffix"
6510 #define SLIBSUF "$SLIBSUF"
6511 #define HAVE_MMX2 HAVE_MMXEXT
6512 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6513 EOF
6514
6515 test -n "$assert_level" &&
6516     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6517
6518 test -n "$malloc_prefix" &&
6519     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6520
6521 if enabled yasm; then
6522     append config_files $TMPASM
6523     printf '' >$TMPASM
6524 fi
6525
6526 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6527
6528
6529 mkdir -p doc
6530 mkdir -p tests
6531 mkdir -p tests/api
6532 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6533
6534 print_config ARCH_   "$config_files" $ARCH_LIST
6535 print_config HAVE_   "$config_files" $HAVE_LIST
6536 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6537                                      $CONFIG_EXTRA      \
6538                                      $ALL_COMPONENTS    \
6539
6540 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6541 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6542
6543 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6544 cp_if_changed $TMPH config.h
6545 touch .config
6546
6547 enabled yasm && cp_if_changed $TMPASM config.asm
6548
6549 cat > $TMPH <<EOF
6550 /* Generated by ffconf */
6551 #ifndef AVUTIL_AVCONFIG_H
6552 #define AVUTIL_AVCONFIG_H
6553 EOF
6554
6555 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6556
6557 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6558
6559 cp_if_changed $TMPH libavutil/avconfig.h
6560
6561 if test -n "$WARNINGS"; then
6562     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6563     enabled fatal_warnings && exit 1
6564 fi
6565
6566 # build pkg-config files
6567
6568 lib_version(){
6569     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6570 }
6571
6572 pkgconfig_generate(){
6573     name=$1
6574     shortname=${name#lib}${build_suffix}
6575     comment=$2
6576     version=$3
6577     libs=$4
6578     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6579     requires=${requires%, }
6580     enabled ${name#lib} || return 0
6581     mkdir -p $name
6582     cat <<EOF > $name/$name${build_suffix}.pc
6583 prefix=$prefix
6584 exec_prefix=\${prefix}
6585 libdir=$libdir
6586 includedir=$incdir
6587
6588 Name: $name
6589 Description: $comment
6590 Version: $version
6591 Requires: $(enabled shared || echo $requires)
6592 Requires.private: $(enabled shared && echo $requires)
6593 Conflicts:
6594 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6595 Libs.private: $(enabled shared && echo $libs)
6596 Cflags: -I\${includedir}
6597 EOF
6598
6599 mkdir -p doc/examples/pc-uninstalled
6600 includedir=${source_path}
6601 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6602     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6603 prefix=
6604 exec_prefix=
6605 libdir=\${pcfiledir}/../../../$name
6606 includedir=${includedir}
6607
6608 Name: $name
6609 Description: $comment
6610 Version: $version
6611 Requires: $requires
6612 Conflicts:
6613 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6614 Cflags: -I\${includedir}
6615 EOF
6616 }
6617
6618 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6619 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6620 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6621 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6622 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6623 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6624 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6625 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6626 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"