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
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-d3d11va        disable D3D11VA code [autodetect]
 153   --disable-dxva2          disable DXVA2 code [autodetect]
 154   --disable-vaapi          disable VAAPI code [autodetect]
 155   --disable-vda            disable VDA code [autodetect]
 156   --disable-vdpau          disable VDPAU code [autodetect]
 157   --enable-videotoolbox    enable VideoToolbox 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   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 201   --enable-frei0r          enable frei0r video filtering [no]
 202   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 203                            if openssl, librtmp or gmp is not used [no]
 204   --enable-gmp             enable gmp, needed for rtmp(t)e support
 205                            if openssl or librtmp is not used [no]
 206   --enable-gnutls          enable gnutls, needed for https support
 207                            if openssl is not used [no]
 208   --disable-iconv          disable iconv [autodetect]
 209   --enable-ladspa          enable LADSPA audio filtering [no]
 210   --enable-libass          enable libass subtitles rendering,
 211                            needed for subtitles and ass filter [no]
 212   --enable-libbluray       enable BluRay reading using libbluray [no]
 213   --enable-libbs2b         enable bs2b DSP library [no]
 214   --enable-libcaca         enable textual display using libcaca [no]
 215   --enable-libcelt         enable CELT decoding via libcelt [no]
 216   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 217   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 218                            and libraw1394 [no]
 219   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 220   --enable-libfaac         enable AAC encoding via libfaac [no]
 221   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 222   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 223   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 224   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 225   --enable-libgme          enable Game Music Emu via libgme [no]
 226   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 227   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 228   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 229   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 230   --enable-libmfx          enable HW acceleration through libmfx
 231   --enable-libmodplug      enable ModPlug via libmodplug [no]
 232   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 233   --enable-libnut          enable NUT (de)muxing via libnut,
 234                            native (de)muxer exists [no]
 235   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 236   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 237   --enable-libopencv       enable video filtering via libopencv [no]
 238   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 239   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 240   --enable-libopus         enable Opus de/encoding via libopus [no]
 241   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 242   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 243   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 244   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 245   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 246   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 247   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 248   --enable-libsoxr         enable Include libsoxr resampling [no]
 249   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 250   --enable-libssh          enable SFTP protocol via libssh [no]
 251   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 252   --enable-libtheora       enable Theora encoding via libtheora [no]
 253   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 254   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 255   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 256   --enable-libvidstab      enable video stabilization using vid.stab [no]
 257   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 258   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 259                            native implementation exists [no]
 260   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 261   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 262   --enable-libwebp         enable WebP encoding via libwebp [no]
 263   --enable-libx264         enable H.264 encoding via x264 [no]
 264   --enable-libx265         enable HEVC encoding via x265 [no]
 265   --enable-libxavs         enable AVS encoding via xavs [no]
 266   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 267   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 268   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 269   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 270   --enable-libxvid         enable Xvid encoding via xvidcore,
 271                            native MPEG-4/Xvid encoder exists [no]
 272   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 273   --enable-libzmq          enable message passing via libzmq [no]
 274   --enable-libzvbi         enable teletext support via libzvbi [no]
 275   --disable-lzma           disable lzma [autodetect]
 276   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 277   --enable-mmal            enable decoding via MMAL [no]
 278   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 279   --enable-nvenc           enable NVIDIA NVENC support [no]
 280   --enable-openal          enable OpenAL 1.1 capture support [no]
 281   --enable-opencl          enable OpenCL code
 282   --enable-opengl          enable OpenGL rendering [no]
 283   --enable-openssl         enable openssl, needed for https support
 284                            if gnutls is not used [no]
 285   --disable-schannel       disable SChannel SSP, needed for TLS support on
 286                            Windows if openssl and gnutls are not used [autodetect]
 287   --disable-sdl            disable sdl [autodetect]
 288   --disable-securetransport disable Secure Transport, needed for TLS support
 289                            on OSX if openssl and gnutls are not used [autodetect]
 290   --enable-x11grab         enable X11 grabbing (legacy) [no]
 291   --disable-xlib           disable xlib [autodetect]
 292   --disable-zlib           disable zlib [autodetect]
 293
 294 Toolchain options:
 295   --arch=ARCH              select architecture [$arch]
 296   --cpu=CPU                select the minimum required CPU (affects
 297                            instruction selection, may crash on older CPUs)
 298   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 299   --progs-suffix=SUFFIX    program name suffix []
 300   --enable-cross-compile   assume a cross-compiler is used
 301   --sysroot=PATH           root of cross-build tree
 302   --sysinclude=PATH        location of cross-build system headers
 303   --target-os=OS           compiler targets OS [$target_os]
 304   --target-exec=CMD        command to run executables on target
 305   --target-path=DIR        path to view of build directory on target
 306   --target-samples=DIR     path to samples directory on target
 307   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 308   --toolchain=NAME         set tool defaults according to NAME
 309   --nm=NM                  use nm tool NM [$nm_default]
 310   --ar=AR                  use archive tool AR [$ar_default]
 311   --as=AS                  use assembler AS [$as_default]
 312   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 313   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 314   --cc=CC                  use C compiler CC [$cc_default]
 315   --cxx=CXX                use C compiler CXX [$cxx_default]
 316   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 317   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 318   --ld=LD                  use linker LD [$ld_default]
 319   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 320   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 321   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 322   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 323   --host-cc=HOSTCC         use host C compiler HOSTCC
 324   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 325   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 326   --host-ld=HOSTLD         use host linker HOSTLD
 327   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 328   --host-libs=HLIBS        use libs HLIBS when linking for host
 329   --host-os=OS             compiler host OS [$target_os]
 330   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 331   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 332   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 333   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 334   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 335   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 336   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 337   --extra-version=STRING   version string suffix []
 338   --optflags=OPTFLAGS      override optimization-related compiler flags
 339   --build-suffix=SUFFIX    library name suffix []
 340   --enable-pic             build position-independent code
 341   --enable-thumb           compile for Thumb instruction set
 342   --enable-lto             use link-time optimization
 343   --env="ENV=override"     override the environment variables
 344
 345 Advanced options (experts only):
 346   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 347   --custom-allocator=NAME  use a supported custom allocator
 348   --disable-symver         disable symbol versioning
 349   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 350   --disable-safe-bitstream-reader
 351                            disable buffer boundary checking in bitreaders
 352                            (faster, but may crash)
 353   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 354   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 355
 356 Optimization options (experts only):
 357   --disable-asm            disable all assembly optimizations
 358   --disable-altivec        disable AltiVec optimizations
 359   --disable-vsx            disable VSX optimizations
 360   --disable-power8         disable POWER8 optimizations
 361   --disable-amd3dnow       disable 3DNow! optimizations
 362   --disable-amd3dnowext    disable 3DNow! extended optimizations
 363   --disable-mmx            disable MMX optimizations
 364   --disable-mmxext         disable MMXEXT optimizations
 365   --disable-sse            disable SSE optimizations
 366   --disable-sse2           disable SSE2 optimizations
 367   --disable-sse3           disable SSE3 optimizations
 368   --disable-ssse3          disable SSSE3 optimizations
 369   --disable-sse4           disable SSE4 optimizations
 370   --disable-sse42          disable SSE4.2 optimizations
 371   --disable-avx            disable AVX optimizations
 372   --disable-xop            disable XOP optimizations
 373   --disable-fma3           disable FMA3 optimizations
 374   --disable-fma4           disable FMA4 optimizations
 375   --disable-avx2           disable AVX2 optimizations
 376   --disable-aesni          disable AESNI optimizations
 377   --disable-armv5te        disable armv5te optimizations
 378   --disable-armv6          disable armv6 optimizations
 379   --disable-armv6t2        disable armv6t2 optimizations
 380   --disable-vfp            disable VFP optimizations
 381   --disable-neon           disable NEON optimizations
 382   --disable-inline-asm     disable use of inline assembly
 383   --disable-yasm           disable use of nasm/yasm assembly
 384   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 385   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 386   --disable-msa            disable MSA optimizations
 387   --disable-mipsfpu        disable floating point MIPS optimizations
 388   --disable-mmi            disable Loongson SIMD optimizations
 389   --disable-fast-unaligned consider unaligned accesses slow
 390
 391 Developer options (useful when working on FFmpeg itself):
 392   --disable-debug          disable debugging symbols
 393   --enable-debug=LEVEL     set the debug level [$debuglevel]
 394   --disable-optimizations  disable compiler optimizations
 395   --enable-extra-warnings  enable more compiler warnings
 396   --disable-stripping      disable stripping of executables and shared libraries
 397   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 398                            2 causes a slowdown at runtime.
 399   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 400   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 401                            leaks and errors, using the specified valgrind binary.
 402                            Cannot be combined with --target-exec
 403   --enable-ftrapv          Trap arithmetic overflows
 404   --samples=PATH           location of test samples for FATE, if not set use
 405                            \$FATE_SAMPLES at make invocation time.
 406   --enable-neon-clobber-test check NEON registers for clobbering (should be
 407                            used only for debugging purposes)
 408   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 409                            should be used only for debugging purposes)
 410   --enable-random          randomly enable/disable components
 411   --disable-random
 412   --enable-random=LIST     randomly enable/disable specific components or
 413   --disable-random=LIST    component groups. LIST is a comma-separated list
 414                            of NAME[:PROB] entries where NAME is a component
 415                            (group) and PROB the probability associated with
 416                            NAME (default 0.5).
 417   --random-seed=VALUE      seed value for --enable/disable-random
 418   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 419                            (only applies to --disable-optimizations builds)
 420
 421 NOTE: Object files are built at the place where configure is launched.
 422 EOF
 423   exit 0
 424 }
 425
 426 quotes='""'
 427 if test -t 1 && which tput >/dev/null 2>&1; then
 428     ncolors=$(tput colors)
 429     if test -n "$ncolors" && test $ncolors -ge 8; then
 430         bold_color=$(tput bold)
 431         warn_color=$(tput setaf 3)
 432         error_color=$(tput setaf 1)
 433         reset_color=$(tput sgr0)
 434     fi
 435     # 72 used instead of 80 since that's the default of pr
 436     ncols=$(tput cols)
 437 fi
 438 : ${ncols:=72}
 439
 440 log(){
 441     echo "$@" >> $logfile
 442 }
 443
 444 log_file(){
 445     log BEGIN $1
 446     pr -n -t $1 >> $logfile
 447     log END $1
 448 }
 449
 450 warn(){
 451     log "WARNING: $*"
 452     WARNINGS="${WARNINGS}WARNING: $*\n"
 453 }
 454
 455 die(){
 456     log "$@"
 457     echo "$error_color$bold_color$@$reset_color"
 458     cat <<EOF
 459
 460 If you think configure made a mistake, make sure you are using the latest
 461 version from Git.  If the latest version fails, report the problem to the
 462 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 463 EOF
 464     if disabled logging; then
 465         cat <<EOF
 466 Rerun configure with logging enabled (do not use --disable-logging), and
 467 include the log this produces with your report.
 468 EOF
 469     else
 470         cat <<EOF
 471 Include the log file "$logfile" produced by configure as this will help
 472 solve the problem.
 473 EOF
 474     fi
 475     exit 1
 476 }
 477
 478 # Avoid locale weirdness, besides we really just want to translate ASCII.
 479 toupper(){
 480     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 481 }
 482
 483 tolower(){
 484     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 485 }
 486
 487 c_escape(){
 488     echo "$*" | sed 's/["\\]/\\\0/g'
 489 }
 490
 491 sh_quote(){
 492     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 493     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 494     echo "$v"
 495 }
 496
 497 cleanws(){
 498     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 499 }
 500
 501 filter(){
 502     pat=$1
 503     shift
 504     for v; do
 505         eval "case $v in $pat) echo $v ;; esac"
 506     done
 507 }
 508
 509 filter_out(){
 510     pat=$1
 511     shift
 512     for v; do
 513         eval "case $v in $pat) ;; *) echo $v ;; esac"
 514     done
 515 }
 516
 517 map(){
 518     m=$1
 519     shift
 520     for v; do eval $m; done
 521 }
 522
 523 add_suffix(){
 524     suffix=$1
 525     shift
 526     for v; do echo ${v}${suffix}; done
 527 }
 528
 529 set_all(){
 530     value=$1
 531     shift
 532     for var in $*; do
 533         eval $var=$value
 534     done
 535 }
 536
 537 set_weak(){
 538     value=$1
 539     shift
 540     for var; do
 541         eval : \${$var:=$value}
 542     done
 543 }
 544
 545 sanitize_var_name(){
 546     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 547 }
 548
 549 set_safe(){
 550     var=$1
 551     shift
 552     eval $(sanitize_var_name "$var")='$*'
 553 }
 554
 555 get_safe(){
 556     eval echo \$$(sanitize_var_name "$1")
 557 }
 558
 559 pushvar(){
 560     for pvar in $*; do
 561         eval level=\${${pvar}_level:=0}
 562         eval ${pvar}_${level}="\$$pvar"
 563         eval ${pvar}_level=$(($level+1))
 564     done
 565 }
 566
 567 popvar(){
 568     for pvar in $*; do
 569         eval level=\${${pvar}_level:-0}
 570         test $level = 0 && continue
 571         eval level=$(($level-1))
 572         eval $pvar="\${${pvar}_${level}}"
 573         eval ${pvar}_level=$level
 574         eval unset ${pvar}_${level}
 575     done
 576 }
 577
 578 enable(){
 579     set_all yes $*
 580 }
 581
 582 disable(){
 583     set_all no $*
 584 }
 585
 586 enable_weak(){
 587     set_weak yes $*
 588 }
 589
 590 disable_weak(){
 591     set_weak no $*
 592 }
 593
 594 enable_safe(){
 595     for var; do
 596         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 597     done
 598 }
 599
 600 disable_safe(){
 601     for var; do
 602         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 603     done
 604 }
 605
 606 do_enable_deep(){
 607     for var; do
 608         enabled $var && continue
 609         eval sel="\$${var}_select"
 610         eval sgs="\$${var}_suggest"
 611         pushvar var sgs
 612         enable_deep $sel
 613         popvar sgs
 614         enable_deep_weak $sgs
 615         popvar var
 616     done
 617 }
 618
 619 enable_deep(){
 620     do_enable_deep $*
 621     enable $*
 622 }
 623
 624 enable_deep_weak(){
 625     for var; do
 626         disabled $var && continue
 627         pushvar var
 628         do_enable_deep $var
 629         popvar var
 630         enable_weak $var
 631     done
 632 }
 633
 634 enabled(){
 635     test "${1#!}" = "$1" && op='=' || op=!=
 636     eval test "x\$${1#!}" $op "xyes"
 637 }
 638
 639 disabled(){
 640     test "${1#!}" = "$1" && op='=' || op=!=
 641     eval test "x\$${1#!}" $op "xno"
 642 }
 643
 644 enabled_all(){
 645     for opt; do
 646         enabled $opt || return 1
 647     done
 648 }
 649
 650 disabled_all(){
 651     for opt; do
 652         disabled $opt || return 1
 653     done
 654 }
 655
 656 enabled_any(){
 657     for opt; do
 658         enabled $opt && return 0
 659     done
 660 }
 661
 662 disabled_any(){
 663     for opt; do
 664         disabled $opt && return 0
 665     done
 666     return 1
 667 }
 668
 669 set_default(){
 670     for opt; do
 671         eval : \${$opt:=\$${opt}_default}
 672     done
 673 }
 674
 675 is_in(){
 676     value=$1
 677     shift
 678     for var in $*; do
 679         [ $var = $value ] && return 0
 680     done
 681     return 1
 682 }
 683
 684 do_check_deps(){
 685     for cfg; do
 686         cfg="${cfg#!}"
 687         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 688         disabled ${cfg}_checking && continue
 689         enable ${cfg}_checking
 690         append allopts $cfg
 691
 692         eval dep_all="\$${cfg}_deps"
 693         eval dep_any="\$${cfg}_deps_any"
 694         eval dep_sel="\$${cfg}_select"
 695         eval dep_sgs="\$${cfg}_suggest"
 696         eval dep_ifa="\$${cfg}_if"
 697         eval dep_ifn="\$${cfg}_if_any"
 698
 699         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 700         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 701         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 702
 703         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 704         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 705         enabled_all  $dep_all || disable $cfg
 706         enabled_any  $dep_any || disable $cfg
 707         disabled_any $dep_sel && disable $cfg
 708
 709         if enabled $cfg; then
 710             enable_deep $dep_sel
 711             enable_deep_weak $dep_sgs
 712         fi
 713
 714         disable ${cfg}_checking
 715     done
 716 }
 717
 718 check_deps(){
 719     unset allopts
 720
 721     do_check_deps "$@"
 722
 723     for cfg in $allopts; do
 724         enabled $cfg || continue
 725         eval dep_extralibs="\$${cfg}_extralibs"
 726         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 727     done
 728 }
 729
 730 print_config(){
 731     pfx=$1
 732     files=$2
 733     shift 2
 734     map 'eval echo "$v \${$v:-no}"' "$@" |
 735     awk "BEGIN { split(\"$files\", files) }
 736         {
 737             c = \"$pfx\" toupper(\$1);
 738             v = \$2;
 739             sub(/yes/, 1, v);
 740             sub(/no/,  0, v);
 741             for (f in files) {
 742                 file = files[f];
 743                 if (file ~ /\\.h\$/) {
 744                     printf(\"#define %s %d\\n\", c, v) >>file;
 745                 } else if (file ~ /\\.asm\$/) {
 746                     printf(\"%%define %s %d\\n\", c, v) >>file;
 747                 } else if (file ~ /\\.mak\$/) {
 748                     n = -v ? \"\" : \"!\";
 749                     printf(\"%s%s=yes\\n\", n, c) >>file;
 750                 } else if (file ~ /\\.texi\$/) {
 751                     pre = -v ? \"\" : \"@c \";
 752                     yesno = \$2;
 753                     c2 = tolower(c);
 754                     gsub(/_/, \"-\", c2);
 755                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 756                 }
 757             }
 758         }"
 759 }
 760
 761 print_enabled(){
 762     suf=$1
 763     shift
 764     for v; do
 765         enabled $v && printf "%s\n" ${v%$suf};
 766     done
 767 }
 768
 769 append(){
 770     var=$1
 771     shift
 772     eval "$var=\"\$$var $*\""
 773 }
 774
 775 prepend(){
 776     var=$1
 777     shift
 778     eval "$var=\"$* \$$var\""
 779 }
 780
 781 unique(){
 782     var=$1
 783     uniq_list=""
 784     for tok in $(eval echo \$$var); do
 785         uniq_list="$(filter_out $tok $uniq_list) $tok"
 786     done
 787     eval "$var=\"${uniq_list}\""
 788 }
 789
 790 add_cppflags(){
 791     append CPPFLAGS "$@"
 792 }
 793
 794 add_cflags(){
 795     append CFLAGS $($cflags_filter "$@")
 796 }
 797
 798 add_cxxflags(){
 799     append CXXFLAGS $($cflags_filter "$@")
 800 }
 801
 802 add_asflags(){
 803     append ASFLAGS $($asflags_filter "$@")
 804 }
 805
 806 add_objcflags(){
 807     append OBJCFLAGS $($objcflags_filter "$@")
 808 }
 809
 810 add_ldflags(){
 811     append LDFLAGS $($ldflags_filter "$@")
 812 }
 813
 814 add_ldexeflags(){
 815     append LDEXEFLAGS $($ldflags_filter "$@")
 816 }
 817
 818 add_ldlibflags(){
 819     append LDLIBFLAGS $($ldflags_filter "$@")
 820 }
 821
 822 add_stripflags(){
 823     append ASMSTRIPFLAGS "$@"
 824 }
 825
 826 add_extralibs(){
 827     prepend extralibs $($ldflags_filter "$@")
 828 }
 829
 830 add_host_cppflags(){
 831     append host_cppflags "$@"
 832 }
 833
 834 add_host_cflags(){
 835     append host_cflags $($host_cflags_filter "$@")
 836 }
 837
 838 add_host_ldflags(){
 839     append host_ldflags $($host_ldflags_filter "$@")
 840 }
 841
 842 add_compat(){
 843     append compat_objs $1
 844     shift
 845     map 'add_cppflags -D$v' "$@"
 846 }
 847
 848 check_cmd(){
 849     log "$@"
 850     "$@" >> $logfile 2>&1
 851 }
 852
 853 check_stat(){
 854     log check_stat "$@"
 855     stat "$1" >> $logfile 2>&1
 856 }
 857
 858 cc_o(){
 859     eval printf '%s\\n' $CC_O
 860 }
 861
 862 cc_e(){
 863     eval printf '%s\\n' $CC_E
 864 }
 865
 866 check_cc(){
 867     log check_cc "$@"
 868     cat > $TMPC
 869     log_file $TMPC
 870     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 871 }
 872
 873 check_cxx(){
 874     log check_cxx "$@"
 875     cat > $TMPCPP
 876     log_file $TMPCPP
 877     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 878 }
 879
 880 check_objcc(){
 881     log check_objcc "$@"
 882     cat > $TMPM
 883     log_file $TMPM
 884     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 885 }
 886
 887 check_cpp(){
 888     log check_cpp "$@"
 889     cat > $TMPC
 890     log_file $TMPC
 891     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 892 }
 893
 894 as_o(){
 895     eval printf '%s\\n' $AS_O
 896 }
 897
 898 check_as(){
 899     log check_as "$@"
 900     cat > $TMPS
 901     log_file $TMPS
 902     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 903 }
 904
 905 check_inline_asm(){
 906     log check_inline_asm "$@"
 907     name="$1"
 908     code="$2"
 909     shift 2
 910     disable $name
 911     check_cc "$@" <<EOF && enable $name
 912 void foo(void){ __asm__ volatile($code); }
 913 EOF
 914 }
 915
 916 check_insn(){
 917     log check_insn "$@"
 918     check_inline_asm ${1}_inline "\"$2\""
 919     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 920 }
 921
 922 check_yasm(){
 923     log check_yasm "$@"
 924     echo "$1" > $TMPS
 925     log_file $TMPS
 926     shift 1
 927     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 928 }
 929
 930 ld_o(){
 931     eval printf '%s\\n' $LD_O
 932 }
 933
 934 check_ld(){
 935     log check_ld "$@"
 936     type=$1
 937     shift 1
 938     flags=$(filter_out '-l*|*.so' $@)
 939     libs=$(filter '-l*|*.so' $@)
 940     check_$type $($cflags_filter $flags) || return
 941     flags=$($ldflags_filter $flags)
 942     libs=$($ldflags_filter $libs)
 943     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 944 }
 945
 946 print_include(){
 947     hdr=$1
 948     test "${hdr%.h}" = "${hdr}" &&
 949         echo "#include $hdr"    ||
 950         echo "#include <$hdr>"
 951 }
 952
 953 check_code(){
 954     log check_code "$@"
 955     check=$1
 956     headers=$2
 957     code=$3
 958     shift 3
 959     {
 960         for hdr in $headers; do
 961             print_include $hdr
 962         done
 963         echo "int main(void) { $code; return 0; }"
 964     } | check_$check "$@"
 965 }
 966
 967 check_cppflags(){
 968     log check_cppflags "$@"
 969     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 970 int x;
 971 EOF
 972 }
 973
 974 test_cflags(){
 975     log test_cflags "$@"
 976     set -- $($cflags_filter "$@")
 977     check_cc "$@" <<EOF
 978 int x;
 979 EOF
 980 }
 981
 982 check_cflags(){
 983     log check_cflags "$@"
 984     test_cflags "$@" && add_cflags "$@"
 985 }
 986
 987 check_cxxflags(){
 988     log check_cxxflags "$@"
 989     set -- $($cflags_filter "$@")
 990     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 991 int x;
 992 EOF
 993 }
 994
 995 test_objcflags(){
 996     log test_cflags "$@"
 997     set -- $($cflags_filter "$@")
 998     check_objcc "$@" <<EOF
 999 int x;
1000 EOF
1001 }
1002
1003 check_objcflags(){
1004     log check_cflags "$@"
1005     test_objcflags "$@" && add_objcflags "$@"
1006 }
1007
1008 test_ldflags(){
1009     log test_ldflags "$@"
1010     check_ld "cc" "$@" <<EOF
1011 int main(void){ return 0; }
1012 EOF
1013 }
1014
1015 check_ldflags(){
1016     log check_ldflags "$@"
1017     test_ldflags "$@" && add_ldflags "$@"
1018 }
1019
1020 test_stripflags(){
1021     log test_stripflags "$@"
1022     # call check_cc to get a fresh TMPO
1023     check_cc <<EOF
1024 int main(void) { return 0; }
1025 EOF
1026     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1027 }
1028
1029 check_stripflags(){
1030     log check_stripflags "$@"
1031     test_stripflags "$@" && add_stripflags "$@"
1032 }
1033
1034 check_header(){
1035     log check_header "$@"
1036     header=$1
1037     shift
1038     disable_safe $header
1039     check_cpp "$@" <<EOF && enable_safe $header
1040 #include <$header>
1041 int x;
1042 EOF
1043 }
1044
1045 check_header_objcc(){
1046     log check_header_objcc "$@"
1047     rm -f -- "$TMPO"
1048     header=$1
1049     shift
1050     disable_safe $header
1051     {
1052        echo "#include <$header>"
1053        echo "int main(void) { return 0; }"
1054     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1055 }
1056
1057 check_func(){
1058     log check_func "$@"
1059     func=$1
1060     shift
1061     disable $func
1062     check_ld "cc" "$@" <<EOF && enable $func
1063 extern int $func();
1064 int main(void){ $func(); }
1065 EOF
1066 }
1067
1068 check_complexfunc(){
1069     log check_complexfunc "$@"
1070     func=$1
1071     narg=$2
1072     shift 2
1073     test $narg = 2 && args="f, g" || args="f * I"
1074     disable $func
1075     check_ld "cc" "$@" <<EOF && enable $func
1076 #include <complex.h>
1077 #include <math.h>
1078 float foo(complex float f, complex float g) { return $func($args); }
1079 int main(void){ return (int) foo; }
1080 EOF
1081 }
1082
1083 check_mathfunc(){
1084     log check_mathfunc "$@"
1085     func=$1
1086     narg=$2
1087     shift 2
1088     test $narg = 2 && args="f, g" || args="f"
1089     disable $func
1090     check_ld "cc" "$@" <<EOF && enable $func
1091 #include <math.h>
1092 float foo(float f, float g) { return $func($args); }
1093 int main(void){ return (int) foo; }
1094 EOF
1095 }
1096
1097 check_func_headers(){
1098     log check_func_headers "$@"
1099     headers=$1
1100     funcs=$2
1101     shift 2
1102     {
1103         for hdr in $headers; do
1104             print_include $hdr
1105         done
1106         for func in $funcs; do
1107             echo "long check_$func(void) { return (long) $func; }"
1108         done
1109         echo "int main(void) { return 0; }"
1110     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1111 }
1112
1113 check_class_headers_cpp(){
1114     log check_class_headers_cpp "$@"
1115     headers=$1
1116     classes=$2
1117     shift 2
1118     {
1119         for hdr in $headers; do
1120             echo "#include <$hdr>"
1121         done
1122         echo "int main(void) { "
1123         i=1
1124         for class in $classes; do
1125             echo "$class obj$i;"
1126             i=$(expr $i + 1)
1127         done
1128         echo "return 0; }"
1129     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1130 }
1131
1132 check_cpp_condition(){
1133     log check_cpp_condition "$@"
1134     header=$1
1135     condition=$2
1136     shift 2
1137     check_cpp "$@" <<EOF
1138 #include <$header>
1139 #if !($condition)
1140 #error "unsatisfied condition: $condition"
1141 #endif
1142 EOF
1143 }
1144
1145 check_lib(){
1146     log check_lib "$@"
1147     header="$1"
1148     func="$2"
1149     shift 2
1150     check_header $header && check_func $func "$@" && add_extralibs "$@"
1151 }
1152
1153 check_lib2(){
1154     log check_lib2 "$@"
1155     headers="$1"
1156     funcs="$2"
1157     shift 2
1158     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1159 }
1160
1161 check_lib_cpp(){
1162     log check_lib_cpp "$@"
1163     headers="$1"
1164     classes="$2"
1165     shift 2
1166     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1167 }
1168
1169 check_pkg_config(){
1170     log check_pkg_config "$@"
1171     pkgandversion="$1"
1172     pkg="${1%% *}"
1173     headers="$2"
1174     funcs="$3"
1175     shift 3
1176     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1177     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1178     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1179     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1180         set_safe "${pkg}_cflags" $pkg_cflags   &&
1181         set_safe "${pkg}_libs"   $pkg_libs
1182 }
1183
1184 check_exec(){
1185     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1186 }
1187
1188 check_exec_crash(){
1189     code=$(cat)
1190
1191     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1192     # are safe but may not be available everywhere.  Thus we use
1193     # raise(SIGTERM) instead.  The check is run in a subshell so we
1194     # can redirect the "Terminated" message from the shell.  SIGBUS
1195     # is not defined by standard C so it is used conditionally.
1196
1197     (check_exec "$@") >> $logfile 2>&1 <<EOF
1198 #include <signal.h>
1199 static void sighandler(int sig){
1200     raise(SIGTERM);
1201 }
1202 int foo(void){
1203     $code
1204 }
1205 int (*func_ptr)(void) = foo;
1206 int main(void){
1207     signal(SIGILL, sighandler);
1208     signal(SIGFPE, sighandler);
1209     signal(SIGSEGV, sighandler);
1210 #ifdef SIGBUS
1211     signal(SIGBUS, sighandler);
1212 #endif
1213     return func_ptr();
1214 }
1215 EOF
1216 }
1217
1218 check_type(){
1219     log check_type "$@"
1220     headers=$1
1221     type=$2
1222     shift 2
1223     disable_safe "$type"
1224     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1225 }
1226
1227 check_struct(){
1228     log check_struct "$@"
1229     headers=$1
1230     struct=$2
1231     member=$3
1232     shift 3
1233     disable_safe "${struct}_${member}"
1234     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1235         enable_safe "${struct}_${member}"
1236 }
1237
1238 check_builtin(){
1239     log check_builtin "$@"
1240     name=$1
1241     headers=$2
1242     builtin=$3
1243     shift 3
1244     disable "$name"
1245     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1246 }
1247
1248 check_compile_assert(){
1249     log check_compile_assert "$@"
1250     name=$1
1251     headers=$2
1252     condition=$3
1253     shift 3
1254     disable "$name"
1255     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1256 }
1257
1258 require(){
1259     name="$1"
1260     header="$2"
1261     func="$3"
1262     shift 3
1263     check_lib $header $func "$@" || die "ERROR: $name not found"
1264 }
1265
1266 require2(){
1267     name="$1"
1268     headers="$2"
1269     func="$3"
1270     shift 3
1271     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1272 }
1273
1274 require_cpp(){
1275     name="$1"
1276     headers="$2"
1277     classes="$3"
1278     shift 3
1279     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1280 }
1281
1282 use_pkg_config(){
1283     pkg="$1"
1284     check_pkg_config "$@" || return 1
1285     add_cflags    $(get_safe "${pkg}_cflags")
1286     add_extralibs $(get_safe "${pkg}_libs")
1287 }
1288
1289 require_pkg_config(){
1290     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1291 }
1292
1293 require_libfreetype(){
1294     log require_libfreetype "$@"
1295     pkg="freetype2"
1296     check_cmd $pkg_config --exists --print-errors $pkg \
1297       || die "ERROR: $pkg not found"
1298     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1299     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1300     {
1301         echo "#include <ft2build.h>"
1302         echo "#include FT_FREETYPE_H"
1303         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1304         echo "int main(void) { return 0; }"
1305     } | check_ld "cc" $pkg_cflags $pkg_libs \
1306       && set_safe "${pkg}_cflags" $pkg_cflags \
1307       && set_safe "${pkg}_libs"   $pkg_libs \
1308       || die "ERROR: $pkg not found"
1309     add_cflags    $(get_safe "${pkg}_cflags")
1310     add_extralibs $(get_safe "${pkg}_libs")
1311 }
1312
1313 hostcc_e(){
1314     eval printf '%s\\n' $HOSTCC_E
1315 }
1316
1317 hostcc_o(){
1318     eval printf '%s\\n' $HOSTCC_O
1319 }
1320
1321 check_host_cc(){
1322     log check_host_cc "$@"
1323     cat > $TMPC
1324     log_file $TMPC
1325     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1326 }
1327
1328 check_host_cpp(){
1329     log check_host_cpp "$@"
1330     cat > $TMPC
1331     log_file $TMPC
1332     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1333 }
1334
1335 check_host_cppflags(){
1336     log check_host_cppflags "$@"
1337     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1338 int x;
1339 EOF
1340 }
1341
1342 check_host_cflags(){
1343     log check_host_cflags "$@"
1344     set -- $($host_cflags_filter "$@")
1345     check_host_cc "$@" <<EOF && append host_cflags "$@"
1346 int x;
1347 EOF
1348 }
1349
1350 check_host_cpp_condition(){
1351     log check_host_cpp_condition "$@"
1352     header=$1
1353     condition=$2
1354     shift 2
1355     check_host_cpp "$@" <<EOF
1356 #include <$header>
1357 #if !($condition)
1358 #error "unsatisfied condition: $condition"
1359 #endif
1360 EOF
1361 }
1362
1363 cp_if_changed(){
1364     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1365     mkdir -p "$(dirname $2)"
1366     $cp_f "$1" "$2"
1367 }
1368
1369 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1370 # system-dependent things.
1371
1372 AVCODEC_COMPONENTS="
1373     bsfs
1374     decoders
1375     encoders
1376     hwaccels
1377     parsers
1378 "
1379
1380 AVDEVICE_COMPONENTS="
1381     indevs
1382     outdevs
1383 "
1384 AVFILTER_COMPONENTS="
1385     filters
1386 "
1387 AVFORMAT_COMPONENTS="
1388     demuxers
1389     muxers
1390     protocols
1391 "
1392
1393 AVRESAMPLE_COMPONENTS=""
1394 AVUTIL_COMPONENTS=""
1395
1396 COMPONENT_LIST="
1397     $AVCODEC_COMPONENTS
1398     $AVDEVICE_COMPONENTS
1399     $AVFILTER_COMPONENTS
1400     $AVFORMAT_COMPONENTS
1401     $AVRESAMPLE_COMPONENTS
1402     $AVUTIL_COMPONENTS
1403 "
1404
1405 EXAMPLE_LIST="
1406     avio_reading_example
1407     avio_dir_cmd_example
1408     decoding_encoding_example
1409     demuxing_decoding_example
1410     extract_mvs_example
1411     filter_audio_example
1412     filtering_audio_example
1413     filtering_video_example
1414     metadata_example
1415     muxing_example
1416     qsvdec_example
1417     remuxing_example
1418     resampling_audio_example
1419     scaling_video_example
1420     transcode_aac_example
1421     transcoding_example
1422 "
1423
1424 EXTERNAL_LIBRARY_LIST="
1425     avisynth
1426     bzlib
1427     chromaprint
1428     crystalhd
1429     decklink
1430     frei0r
1431     gcrypt
1432     gmp
1433     gnutls
1434     iconv
1435     ladspa
1436     libass
1437     libbluray
1438     libbs2b
1439     libcaca
1440     libcdio
1441     libcelt
1442     libdc1394
1443     libdcadec
1444     libfaac
1445     libfdk_aac
1446     libflite
1447     libfontconfig
1448     libfreetype
1449     libfribidi
1450     libgme
1451     libgsm
1452     libiec61883
1453     libilbc
1454     libkvazaar
1455     libmfx
1456     libmodplug
1457     libmp3lame
1458     libnut
1459     libopencore_amrnb
1460     libopencore_amrwb
1461     libopencv
1462     libopenh264
1463     libopenjpeg
1464     libopus
1465     libpulse
1466     librtmp
1467     librubberband
1468     libschroedinger
1469     libshine
1470     libsmbclient
1471     libsnappy
1472     libsoxr
1473     libspeex
1474     libssh
1475     libtesseract
1476     libtheora
1477     libtwolame
1478     libutvideo
1479     libv4l2
1480     libvidstab
1481     libvo_amrwbenc
1482     libvorbis
1483     libvpx
1484     libwavpack
1485     libwebp
1486     libx264
1487     libx265
1488     libxavs
1489     libxcb
1490     libxcb_shm
1491     libxcb_shape
1492     libxcb_xfixes
1493     libxvid
1494     libzimg
1495     libzmq
1496     libzvbi
1497     lzma
1498     mmal
1499     netcdf
1500     nvenc
1501     openal
1502     opencl
1503     opengl
1504     openssl
1505     schannel
1506     sdl
1507     securetransport
1508     x11grab
1509     xlib
1510     zlib
1511 "
1512
1513 DOCUMENT_LIST="
1514     doc
1515     htmlpages
1516     manpages
1517     podpages
1518     txtpages
1519 "
1520
1521 FEATURE_LIST="
1522     ftrapv
1523     gray
1524     hardcoded_tables
1525     runtime_cpudetect
1526     safe_bitstream_reader
1527     shared
1528     small
1529     static
1530     swscale_alpha
1531 "
1532
1533 HWACCEL_LIST="
1534     d3d11va
1535     dxva2
1536     vaapi
1537     vda
1538     vdpau
1539     videotoolbox
1540     xvmc
1541 "
1542
1543 LIBRARY_LIST="
1544     avcodec
1545     avdevice
1546     avfilter
1547     avformat
1548     avresample
1549     avutil
1550     postproc
1551     swresample
1552     swscale
1553 "
1554
1555 LICENSE_LIST="
1556     gpl
1557     nonfree
1558     version3
1559 "
1560
1561 PROGRAM_LIST="
1562     ffplay
1563     ffprobe
1564     ffserver
1565     ffmpeg
1566 "
1567
1568 SUBSYSTEM_LIST="
1569     dct
1570     dwt
1571     error_resilience
1572     faan
1573     fast_unaligned
1574     fft
1575     lsp
1576     lzo
1577     mdct
1578     pixelutils
1579     network
1580     rdft
1581 "
1582
1583 CONFIG_LIST="
1584     $COMPONENT_LIST
1585     $DOCUMENT_LIST
1586     $EXAMPLE_LIST
1587     $EXTERNAL_LIBRARY_LIST
1588     $FEATURE_LIST
1589     $HWACCEL_LIST
1590     $LICENSE_LIST
1591     $LIBRARY_LIST
1592     $PROGRAM_LIST
1593     $SUBSYSTEM_LIST
1594     fontconfig
1595     incompatible_libav_abi
1596     memalign_hack
1597     memory_poisoning
1598     neon_clobber_test
1599     pic
1600     pod2man
1601     raise_major
1602     thumb
1603     valgrind_backtrace
1604     xmm_clobber_test
1605 "
1606
1607 THREADS_LIST="
1608     pthreads
1609     os2threads
1610     w32threads
1611 "
1612
1613 ATOMICS_LIST="
1614     atomics_gcc
1615     atomics_suncc
1616     atomics_win32
1617 "
1618
1619 ARCH_LIST="
1620     aarch64
1621     alpha
1622     arm
1623     avr32
1624     avr32_ap
1625     avr32_uc
1626     bfin
1627     ia64
1628     m68k
1629     mips
1630     mips64
1631     parisc
1632     ppc
1633     ppc64
1634     s390
1635     sh4
1636     sparc
1637     sparc64
1638     tilegx
1639     tilepro
1640     tomi
1641     x86
1642     x86_32
1643     x86_64
1644 "
1645
1646 ARCH_EXT_LIST_ARM="
1647     armv5te
1648     armv6
1649     armv6t2
1650     armv8
1651     neon
1652     vfp
1653     vfpv3
1654     setend
1655 "
1656
1657 ARCH_EXT_LIST_MIPS="
1658     mipsfpu
1659     mips32r2
1660     mips64r2
1661     mips32r6
1662     mips64r6
1663     mipsdsp
1664     mipsdspr2
1665     msa
1666 "
1667
1668 ARCH_EXT_LIST_LOONGSON="
1669     loongson2
1670     loongson3
1671     mmi
1672 "
1673
1674 ARCH_EXT_LIST_X86_SIMD="
1675     aesni
1676     amd3dnow
1677     amd3dnowext
1678     avx
1679     avx2
1680     fma3
1681     fma4
1682     mmx
1683     mmxext
1684     sse
1685     sse2
1686     sse3
1687     sse4
1688     sse42
1689     ssse3
1690     xop
1691 "
1692
1693 ARCH_EXT_LIST_PPC="
1694     altivec
1695     dcbzl
1696     ldbrx
1697     power8
1698     ppc4xx
1699     vsx
1700 "
1701
1702 ARCH_EXT_LIST_X86="
1703     $ARCH_EXT_LIST_X86_SIMD
1704     cpunop
1705     i686
1706 "
1707
1708 ARCH_EXT_LIST="
1709     $ARCH_EXT_LIST_ARM
1710     $ARCH_EXT_LIST_PPC
1711     $ARCH_EXT_LIST_X86
1712     $ARCH_EXT_LIST_MIPS
1713     $ARCH_EXT_LIST_LOONGSON
1714 "
1715
1716 ARCH_FEATURES="
1717     aligned_stack
1718     fast_64bit
1719     fast_clz
1720     fast_cmov
1721     local_aligned_8
1722     local_aligned_16
1723     local_aligned_32
1724     simd_align_16
1725 "
1726
1727 BUILTIN_LIST="
1728     atomic_cas_ptr
1729     atomic_compare_exchange
1730     machine_rw_barrier
1731     MemoryBarrier
1732     mm_empty
1733     rdtsc
1734     sarestart
1735     sem_timedwait
1736     sync_val_compare_and_swap
1737 "
1738 HAVE_LIST_CMDLINE="
1739     inline_asm
1740     symver
1741     yasm
1742 "
1743
1744 HAVE_LIST_PUB="
1745     bigendian
1746     fast_unaligned
1747     incompatible_libav_abi
1748 "
1749
1750 HEADERS_LIST="
1751     alsa_asoundlib_h
1752     altivec_h
1753     arpa_inet_h
1754     asm_types_h
1755     cdio_paranoia_h
1756     cdio_paranoia_paranoia_h
1757     dispatch_dispatch_h
1758     dev_bktr_ioctl_bt848_h
1759     dev_bktr_ioctl_meteor_h
1760     dev_ic_bt8xx_h
1761     dev_video_bktr_ioctl_bt848_h
1762     dev_video_meteor_ioctl_meteor_h
1763     direct_h
1764     dirent_h
1765     dlfcn_h
1766     d3d11_h
1767     dxva_h
1768     ES2_gl_h
1769     gsm_h
1770     io_h
1771     mach_mach_time_h
1772     machine_ioctl_bt848_h
1773     machine_ioctl_meteor_h
1774     malloc_h
1775     opencv2_core_core_c_h
1776     openjpeg_2_1_openjpeg_h
1777     openjpeg_2_0_openjpeg_h
1778     openjpeg_1_5_openjpeg_h
1779     OpenGL_gl3_h
1780     poll_h
1781     sndio_h
1782     soundcard_h
1783     sys_mman_h
1784     sys_param_h
1785     sys_resource_h
1786     sys_select_h
1787     sys_soundcard_h
1788     sys_time_h
1789     sys_un_h
1790     sys_videoio_h
1791     termios_h
1792     udplite_h
1793     unistd_h
1794     valgrind_valgrind_h
1795     windows_h
1796     winsock2_h
1797 "
1798
1799 INTRINSICS_LIST="
1800     intrinsics_neon
1801 "
1802
1803 COMPLEX_FUNCS="
1804     cabs
1805     cexp
1806 "
1807
1808 MATH_FUNCS="
1809     atanf
1810     atan2f
1811     cbrt
1812     cbrtf
1813     copysign
1814     cosf
1815     erf
1816     exp2
1817     exp2f
1818     expf
1819     hypot
1820     isfinite
1821     isinf
1822     isnan
1823     ldexpf
1824     llrint
1825     llrintf
1826     log2
1827     log2f
1828     log10f
1829     lrint
1830     lrintf
1831     powf
1832     rint
1833     round
1834     roundf
1835     sinf
1836     trunc
1837     truncf
1838 "
1839
1840 SYSTEM_FUNCS="
1841     access
1842     aligned_malloc
1843     arc4random
1844     clock_gettime
1845     closesocket
1846     CommandLineToArgvW
1847     CoTaskMemFree
1848     CryptGenRandom
1849     dlopen
1850     fcntl
1851     flt_lim
1852     fork
1853     getaddrinfo
1854     gethrtime
1855     getopt
1856     GetProcessAffinityMask
1857     GetProcessMemoryInfo
1858     GetProcessTimes
1859     getrusage
1860     GetSystemTimeAsFileTime
1861     gettimeofday
1862     glob
1863     glXGetProcAddress
1864     gmtime_r
1865     inet_aton
1866     isatty
1867     jack_port_get_latency_range
1868     kbhit
1869     localtime_r
1870     lstat
1871     lzo1x_999_compress
1872     mach_absolute_time
1873     MapViewOfFile
1874     memalign
1875     mkstemp
1876     mmap
1877     mprotect
1878     nanosleep
1879     PeekNamedPipe
1880     posix_memalign
1881     pthread_cancel
1882     sched_getaffinity
1883     SetConsoleTextAttribute
1884     SetConsoleCtrlHandler
1885     setmode
1886     setrlimit
1887     Sleep
1888     strerror_r
1889     sysconf
1890     sysctl
1891     usleep
1892     UTGetOSTypeFromString
1893     VirtualAlloc
1894     wglGetProcAddress
1895 "
1896
1897 TOOLCHAIN_FEATURES="
1898     as_dn_directive
1899     as_func
1900     as_object_arch
1901     asm_mod_q
1902     attribute_may_alias
1903     attribute_packed
1904     ebp_available
1905     ebx_available
1906     gnu_as
1907     gnu_windres
1908     ibm_asm
1909     inline_asm_direct_symbol_refs
1910     inline_asm_labels
1911     inline_asm_nonlocal_labels
1912     pragma_deprecated
1913     rsync_contimeout
1914     symver_asm_label
1915     symver_gnu_asm
1916     vfp_args
1917     xform_asm
1918     xmm_clobbers
1919 "
1920
1921 TYPES_LIST="
1922     CONDITION_VARIABLE_Ptr
1923     socklen_t
1924     struct_addrinfo
1925     struct_group_source_req
1926     struct_ip_mreq_source
1927     struct_ipv6_mreq
1928     struct_pollfd
1929     struct_rusage_ru_maxrss
1930     struct_sctp_event_subscribe
1931     struct_sockaddr_in6
1932     struct_sockaddr_sa_len
1933     struct_sockaddr_storage
1934     struct_stat_st_mtim_tv_nsec
1935     struct_v4l2_frmivalenum_discrete
1936 "
1937
1938 HAVE_LIST="
1939     $ARCH_EXT_LIST
1940     $(add_suffix _external $ARCH_EXT_LIST)
1941     $(add_suffix _inline   $ARCH_EXT_LIST)
1942     $ARCH_FEATURES
1943     $ATOMICS_LIST
1944     $BUILTIN_LIST
1945     $COMPLEX_FUNCS
1946     $HAVE_LIST_CMDLINE
1947     $HAVE_LIST_PUB
1948     $HEADERS_LIST
1949     $INTRINSICS_LIST
1950     $MATH_FUNCS
1951     $SYSTEM_FUNCS
1952     $THREADS_LIST
1953     $TOOLCHAIN_FEATURES
1954     $TYPES_LIST
1955     atomics_native
1956     dos_paths
1957     dxva2_lib
1958     dxva2api_cobj
1959     libc_msvcrt
1960     libdc1394_1
1961     libdc1394_2
1962     makeinfo
1963     makeinfo_html
1964     perl
1965     pod2man
1966     sdl
1967     section_data_rel_ro
1968     texi2html
1969     threads
1970     vaapi_x11
1971     vdpau_x11
1972     winrt
1973     xlib
1974 "
1975
1976 # options emitted with CONFIG_ prefix but not available on the command line
1977 CONFIG_EXTRA="
1978     aandcttables
1979     ac3dsp
1980     audio_frame_queue
1981     audiodsp
1982     blockdsp
1983     bswapdsp
1984     cabac
1985     dirac_parse
1986     dvprofile
1987     exif
1988     faandct
1989     faanidct
1990     fdctdsp
1991     flacdsp
1992     fmtconvert
1993     frame_thread_encoder
1994     g722dsp
1995     golomb
1996     gplv3
1997     h263dsp
1998     h264chroma
1999     h264dsp
2000     h264pred
2001     h264qpel
2002     hpeldsp
2003     huffman
2004     huffyuvdsp
2005     huffyuvencdsp
2006     idctdsp
2007     iirfilter
2008     imdct15
2009     intrax8
2010     ividsp
2011     jpegtables
2012     lgplv3
2013     libx262
2014     llauddsp
2015     llviddsp
2016     lpc
2017     lzf
2018     me_cmp
2019     mpeg_er
2020     mpegaudio
2021     mpegaudiodsp
2022     mpegvideo
2023     mpegvideoenc
2024     mss34dsp
2025     pixblockdsp
2026     qpeldsp
2027     qsv
2028     qsvdec
2029     qsvenc
2030     rangecoder
2031     riffdec
2032     riffenc
2033     rtpdec
2034     rtpenc_chain
2035     rv34dsp
2036     sinewin
2037     snappy
2038     startcode
2039     texturedsp
2040     texturedspenc
2041     tpeldsp
2042     videodsp
2043     vp3dsp
2044     vp56dsp
2045     vp8dsp
2046     wma_freqs
2047     wmv2dsp
2048 "
2049
2050 CMDLINE_SELECT="
2051     $ARCH_EXT_LIST
2052     $CONFIG_LIST
2053     $HAVE_LIST_CMDLINE
2054     $THREADS_LIST
2055     asm
2056     cross_compile
2057     debug
2058     extra_warnings
2059     logging
2060     lto
2061     optimizations
2062     rpath
2063     stripping
2064 "
2065
2066 PATHS_LIST="
2067     bindir
2068     datadir
2069     docdir
2070     incdir
2071     libdir
2072     mandir
2073     pkgconfigdir
2074     prefix
2075     shlibdir
2076 "
2077
2078 CMDLINE_SET="
2079     $PATHS_LIST
2080     ar
2081     arch
2082     as
2083     assert_level
2084     build_suffix
2085     cc
2086     objcc
2087     cpu
2088     cross_prefix
2089     custom_allocator
2090     cxx
2091     dep_cc
2092     doxygen
2093     env
2094     extra_version
2095     gas
2096     host_cc
2097     host_cflags
2098     host_ld
2099     host_ldflags
2100     host_libs
2101     host_os
2102     install
2103     ld
2104     logfile
2105     malloc_prefix
2106     nm
2107     optflags
2108     pkg_config
2109     pkg_config_flags
2110     progs_suffix
2111     random_seed
2112     ranlib
2113     samples
2114     strip
2115     sws_max_filter_size
2116     sysinclude
2117     sysroot
2118     target_exec
2119     target_os
2120     target_path
2121     target_samples
2122     tempprefix
2123     toolchain
2124     valgrind
2125     yasmexe
2126 "
2127
2128 CMDLINE_APPEND="
2129     extra_cflags
2130     extra_cxxflags
2131     extra_objcflags
2132     host_cppflags
2133 "
2134
2135 # code dependency declarations
2136
2137 # architecture extensions
2138
2139 armv5te_deps="arm"
2140 armv6_deps="arm"
2141 armv6t2_deps="arm"
2142 armv8_deps="aarch64"
2143 neon_deps_any="aarch64 arm"
2144 intrinsics_neon_deps="neon"
2145 vfp_deps_any="aarch64 arm"
2146 vfpv3_deps="vfp"
2147 setend_deps="arm"
2148
2149 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2150
2151 mipsfpu_deps="mips"
2152 mipsdsp_deps="mips"
2153 mipsdspr2_deps="mips"
2154 mips32r2_deps="mips"
2155 mips32r6_deps="mips"
2156 mips64r2_deps="mips"
2157 mips64r6_deps="mips"
2158 msa_deps="mips"
2159 mmi_deps="mips"
2160
2161 altivec_deps="ppc"
2162 dcbzl_deps="ppc"
2163 ldbrx_deps="ppc"
2164 ppc4xx_deps="ppc"
2165 vsx_deps="altivec"
2166 power8_deps="vsx"
2167
2168 cpunop_deps="i686"
2169 x86_64_select="i686"
2170 x86_64_suggest="fast_cmov"
2171
2172 amd3dnow_deps="mmx"
2173 amd3dnowext_deps="amd3dnow"
2174 i686_deps="x86"
2175 mmx_deps="x86"
2176 mmxext_deps="mmx"
2177 sse_deps="mmxext"
2178 sse2_deps="sse"
2179 sse3_deps="sse2"
2180 ssse3_deps="sse3"
2181 sse4_deps="ssse3"
2182 sse42_deps="sse4"
2183 aesni_deps="sse42"
2184 avx_deps="sse42"
2185 xop_deps="avx"
2186 fma3_deps="avx"
2187 fma4_deps="avx"
2188 avx2_deps="avx"
2189
2190 mmx_external_deps="yasm"
2191 mmx_inline_deps="inline_asm"
2192 mmx_suggest="mmx_external mmx_inline"
2193
2194 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2195     eval dep=\$${ext}_deps
2196     eval ${ext}_external_deps='"${dep}_external"'
2197     eval ${ext}_inline_deps='"${dep}_inline"'
2198     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2199 done
2200
2201 aligned_stack_if_any="aarch64 ppc x86"
2202 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2203 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2204 fast_unaligned_if_any="aarch64 ppc x86"
2205 simd_align_16_if_any="altivec neon sse"
2206
2207 # system capabilities
2208 symver_if_any="symver_asm_label symver_gnu_asm"
2209 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2210
2211 # threading support
2212 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2213 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2214 atomics_win32_if="MemoryBarrier"
2215 atomics_native_if_any="$ATOMICS_LIST"
2216 w32threads_deps="atomics_native"
2217 threads_if_any="$THREADS_LIST"
2218
2219 # subsystems
2220 dct_select="rdft"
2221 dirac_parse_select="golomb"
2222 error_resilience_select="me_cmp"
2223 faandct_deps="faan fdctdsp"
2224 faanidct_deps="faan idctdsp"
2225 frame_thread_encoder_deps="encoders threads"
2226 intrax8_select="error_resilience"
2227 mdct_select="fft"
2228 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2229 mpeg_er_select="error_resilience"
2230 mpegaudio_select="mpegaudiodsp"
2231 mpegaudiodsp_select="dct"
2232 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2233 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2234 qsvdec_select="qsv"
2235 qsvenc_select="qsv"
2236 rdft_select="fft"
2237
2238 # decoders / encoders
2239 aac_decoder_select="imdct15 mdct sinewin"
2240 aac_fixed_decoder_select="mdct sinewin"
2241 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2242 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2243 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2244 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2245 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2246 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2247 adpcm_g722_decoder_select="g722dsp"
2248 adpcm_g722_encoder_select="g722dsp"
2249 aic_decoder_select="golomb idctdsp"
2250 alac_encoder_select="lpc"
2251 als_decoder_select="bswapdsp"
2252 amrnb_decoder_select="lsp"
2253 amrwb_decoder_select="lsp"
2254 amv_decoder_select="sp5x_decoder exif"
2255 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2256 ape_decoder_select="bswapdsp llauddsp"
2257 apng_decoder_select="zlib"
2258 apng_encoder_select="huffyuvencdsp zlib"
2259 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2260 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2261 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2262 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2263 atrac1_decoder_select="mdct sinewin"
2264 atrac3_decoder_select="mdct"
2265 atrac3p_decoder_select="mdct sinewin"
2266 avrn_decoder_select="exif jpegtables"
2267 bink_decoder_select="blockdsp hpeldsp"
2268 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2269 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2270 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2271 cllc_decoder_select="bswapdsp"
2272 comfortnoise_encoder_select="lpc"
2273 cook_decoder_select="audiodsp mdct sinewin"
2274 cscd_decoder_select="lzo"
2275 cscd_decoder_suggest="zlib"
2276 dca_decoder_select="mdct"
2277 dds_decoder_select="texturedsp"
2278 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2279 dnxhd_decoder_select="blockdsp idctdsp"
2280 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2281 dvvideo_decoder_select="dvprofile idctdsp"
2282 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2283 dxa_decoder_select="zlib"
2284 dxv_decoder_select="lzf texturedsp"
2285 eac3_decoder_select="ac3_decoder"
2286 eac3_encoder_select="ac3_encoder"
2287 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2288 eatgq_decoder_select="aandcttables"
2289 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2290 exr_decoder_select="zlib"
2291 ffv1_decoder_select="golomb rangecoder"
2292 ffv1_encoder_select="rangecoder"
2293 ffvhuff_decoder_select="huffyuv_decoder"
2294 ffvhuff_encoder_select="huffyuv_encoder"
2295 fic_decoder_select="golomb"
2296 flac_decoder_select="flacdsp golomb"
2297 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2298 flashsv2_decoder_select="zlib"
2299 flashsv2_encoder_select="zlib"
2300 flashsv_decoder_select="zlib"
2301 flashsv_encoder_select="zlib"
2302 flv_decoder_select="h263_decoder"
2303 flv_encoder_select="h263_encoder"
2304 fourxm_decoder_select="blockdsp bswapdsp"
2305 fraps_decoder_select="bswapdsp huffman"
2306 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2307 g729_decoder_select="audiodsp"
2308 h261_decoder_select="mpegvideo"
2309 h261_encoder_select="aandcttables mpegvideoenc"
2310 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2311 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2312 h263i_decoder_select="h263_decoder"
2313 h263p_decoder_select="h263_decoder"
2314 h263p_encoder_select="h263_encoder"
2315 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2316 h264_decoder_suggest="error_resilience"
2317 h264_qsv_decoder_deps="libmfx"
2318 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2319 h264_qsv_encoder_deps="libmfx"
2320 h264_qsv_encoder_select="qsvenc"
2321 hap_decoder_select="snappy texturedsp"
2322 hap_encoder_deps="libsnappy"
2323 hap_encoder_select="texturedspenc"
2324 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2325 hevc_qsv_decoder_deps="libmfx"
2326 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2327 hevc_qsv_encoder_deps="libmfx"
2328 hevc_qsv_encoder_select="qsvenc"
2329 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2330 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2331 iac_decoder_select="imc_decoder"
2332 imc_decoder_select="bswapdsp fft mdct sinewin"
2333 indeo3_decoder_select="hpeldsp"
2334 indeo4_decoder_select="ividsp"
2335 indeo5_decoder_select="ividsp"
2336 interplay_video_decoder_select="hpeldsp"
2337 jpegls_decoder_select="golomb mjpeg_decoder"
2338 jpegls_encoder_select="golomb"
2339 jv_decoder_select="blockdsp"
2340 lagarith_decoder_select="huffyuvdsp"
2341 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2342 loco_decoder_select="golomb"
2343 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2344 metasound_decoder_select="lsp mdct sinewin"
2345 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2346 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2347 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2348 mjpegb_decoder_select="mjpeg_decoder"
2349 mlp_decoder_select="mlp_parser"
2350 motionpixels_decoder_select="bswapdsp"
2351 mp1_decoder_select="mpegaudio"
2352 mp1float_decoder_select="mpegaudio"
2353 mp2_decoder_select="mpegaudio"
2354 mp2float_decoder_select="mpegaudio"
2355 mp3_decoder_select="mpegaudio"
2356 mp3adu_decoder_select="mpegaudio"
2357 mp3adufloat_decoder_select="mpegaudio"
2358 mp3float_decoder_select="mpegaudio"
2359 mp3on4_decoder_select="mpegaudio"
2360 mp3on4float_decoder_select="mpegaudio"
2361 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2362 mpc8_decoder_select="mpegaudiodsp"
2363 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2364 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2365 mpegvideo_decoder_select="mpegvideo"
2366 mpeg1video_decoder_select="mpegvideo"
2367 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2368 mpeg2video_decoder_select="mpegvideo"
2369 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2370 mpeg2_qsv_decoder_deps="libmfx"
2371 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2372 mpeg2_qsv_encoder_deps="libmfx"
2373 mpeg2_qsv_encoder_select="qsvenc"
2374 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2375 mpeg4_encoder_select="h263_encoder"
2376 msa1_decoder_select="mss34dsp"
2377 msmpeg4v1_decoder_select="h263_decoder"
2378 msmpeg4v2_decoder_select="h263_decoder"
2379 msmpeg4v2_encoder_select="h263_encoder"
2380 msmpeg4v3_decoder_select="h263_decoder"
2381 msmpeg4v3_encoder_select="h263_encoder"
2382 mss2_decoder_select="vc1_decoder"
2383 mts2_decoder_select="mss34dsp"
2384 mxpeg_decoder_select="mjpeg_decoder"
2385 nellymoser_decoder_select="mdct sinewin"
2386 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2387 nuv_decoder_select="idctdsp lzo"
2388 on2avc_decoder_select="mdct"
2389 opus_decoder_deps="swresample"
2390 opus_decoder_select="imdct15"
2391 png_decoder_select="zlib"
2392 png_encoder_select="huffyuvencdsp zlib"
2393 prores_decoder_select="blockdsp idctdsp"
2394 prores_encoder_select="fdctdsp"
2395 qcelp_decoder_select="lsp"
2396 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2397 ra_144_decoder_select="audiodsp"
2398 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2399 ralf_decoder_select="golomb"
2400 rawvideo_decoder_select="bswapdsp"
2401 rscc_decoder_select="zlib"
2402 rtjpeg_decoder_select="me_cmp"
2403 rv10_decoder_select="h263_decoder"
2404 rv10_encoder_select="h263_encoder"
2405 rv20_decoder_select="h263_decoder"
2406 rv20_encoder_select="h263_encoder"
2407 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2408 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2409 screenpresso_decoder_select="zlib"
2410 shorten_decoder_select="golomb"
2411 sipr_decoder_select="lsp"
2412 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2413 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2414 sonic_decoder_select="golomb rangecoder"
2415 sonic_encoder_select="golomb rangecoder"
2416 sonic_ls_encoder_select="golomb rangecoder"
2417 sp5x_decoder_select="mjpeg_decoder"
2418 svq1_decoder_select="hpeldsp"
2419 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2420 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2421 svq3_decoder_suggest="zlib"
2422 tak_decoder_select="audiodsp"
2423 tdsc_decoder_select="zlib mjpeg_decoder"
2424 theora_decoder_select="vp3_decoder"
2425 thp_decoder_select="mjpeg_decoder"
2426 tiff_decoder_suggest="zlib lzma"
2427 tiff_encoder_suggest="zlib"
2428 truehd_decoder_select="mlp_parser"
2429 truemotion2_decoder_select="bswapdsp"
2430 truespeech_decoder_select="bswapdsp"
2431 tscc_decoder_select="zlib"
2432 twinvq_decoder_select="mdct lsp sinewin"
2433 txd_decoder_select="texturedsp"
2434 utvideo_decoder_select="bswapdsp"
2435 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2436 vble_decoder_select="huffyuvdsp"
2437 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2438 vc1_qsv_decoder_deps="libmfx"
2439 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2440 vc1image_decoder_select="vc1_decoder"
2441 vorbis_decoder_select="mdct"
2442 vorbis_encoder_select="mdct"
2443 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2444 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2445 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2446 vp6a_decoder_select="vp6_decoder"
2447 vp6f_decoder_select="vp6_decoder"
2448 vp7_decoder_select="h264pred videodsp vp8dsp"
2449 vp8_decoder_select="h264pred videodsp vp8dsp"
2450 vp9_decoder_select="videodsp vp9_parser"
2451 webp_decoder_select="vp8_decoder exif"
2452 wmalossless_decoder_select="llauddsp"
2453 wmapro_decoder_select="mdct sinewin wma_freqs"
2454 wmav1_decoder_select="mdct sinewin wma_freqs"
2455 wmav1_encoder_select="mdct sinewin wma_freqs"
2456 wmav2_decoder_select="mdct sinewin wma_freqs"
2457 wmav2_encoder_select="mdct sinewin wma_freqs"
2458 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2459 wmv1_decoder_select="h263_decoder"
2460 wmv1_encoder_select="h263_encoder"
2461 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2462 wmv2_encoder_select="h263_encoder wmv2dsp"
2463 wmv3_decoder_select="vc1_decoder"
2464 wmv3image_decoder_select="wmv3_decoder"
2465 xma1_decoder_select="wmapro_decoder"
2466 xma2_decoder_select="wmapro_decoder"
2467 zerocodec_decoder_select="zlib"
2468 zlib_decoder_select="zlib"
2469 zlib_encoder_select="zlib"
2470 zmbv_decoder_select="zlib"
2471 zmbv_encoder_select="zlib"
2472
2473 # hardware accelerators
2474 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2475 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2476 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2477 vaapi_deps="va_va_h"
2478 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2479 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2480 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2481 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2482 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2483 xvmc_deps="X11_extensions_XvMClib_h"
2484
2485 h263_vaapi_hwaccel_deps="vaapi"
2486 h263_vaapi_hwaccel_select="h263_decoder"
2487 h263_videotoolbox_hwaccel_deps="videotoolbox"
2488 h263_videotoolbox_hwaccel_select="h263_decoder"
2489 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2490 h264_d3d11va_hwaccel_deps="d3d11va"
2491 h264_d3d11va_hwaccel_select="h264_decoder"
2492 h264_dxva2_hwaccel_deps="dxva2"
2493 h264_dxva2_hwaccel_select="h264_decoder"
2494 h264_mmal_decoder_deps="mmal"
2495 h264_mmal_decoder_select="mmal"
2496 h264_mmal_hwaccel_deps="mmal"
2497 h264_qsv_hwaccel_deps="libmfx"
2498 h264_vaapi_hwaccel_deps="vaapi"
2499 h264_vaapi_hwaccel_select="h264_decoder"
2500 h264_vda_decoder_deps="vda"
2501 h264_vda_decoder_select="h264_decoder"
2502 h264_vda_hwaccel_deps="vda"
2503 h264_vda_hwaccel_select="h264_decoder"
2504 h264_vda_old_hwaccel_deps="vda"
2505 h264_vda_old_hwaccel_select="h264_decoder"
2506 h264_vdpau_decoder_deps="vdpau"
2507 h264_vdpau_decoder_select="h264_decoder"
2508 h264_vdpau_hwaccel_deps="vdpau"
2509 h264_vdpau_hwaccel_select="h264_decoder"
2510 h264_videotoolbox_hwaccel_deps="videotoolbox"
2511 h264_videotoolbox_hwaccel_select="h264_decoder"
2512 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2513 hevc_d3d11va_hwaccel_select="hevc_decoder"
2514 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2515 hevc_dxva2_hwaccel_select="hevc_decoder"
2516 hevc_qsv_hwaccel_deps="libmfx"
2517 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2518 hevc_vaapi_hwaccel_select="hevc_decoder"
2519 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2520 hevc_vdpau_hwaccel_select="hevc_decoder"
2521 mpeg_vdpau_decoder_deps="vdpau"
2522 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2523 mpeg_xvmc_hwaccel_deps="xvmc"
2524 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2525 mpeg1_vdpau_decoder_deps="vdpau"
2526 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2527 mpeg1_vdpau_hwaccel_deps="vdpau"
2528 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2529 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2530 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2531 mpeg1_xvmc_hwaccel_deps="xvmc"
2532 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2533 mpeg2_crystalhd_decoder_select="crystalhd"
2534 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2535 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2536 mpeg2_dxva2_hwaccel_deps="dxva2"
2537 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2538 mpeg2_mmal_decoder_deps="mmal"
2539 mpeg2_mmal_decoder_select="mmal"
2540 mpeg2_mmal_hwaccel_deps="mmal"
2541 mpeg2_qsv_hwaccel_deps="libmfx"
2542 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2543 mpeg2_vaapi_hwaccel_deps="vaapi"
2544 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2545 mpeg2_vdpau_hwaccel_deps="vdpau"
2546 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2548 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2549 mpeg2_xvmc_hwaccel_deps="xvmc"
2550 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2551 mpeg4_crystalhd_decoder_select="crystalhd"
2552 mpeg4_mmal_decoder_deps="mmal"
2553 mpeg4_mmal_decoder_select="mmal"
2554 mpeg4_mmal_hwaccel_deps="mmal"
2555 mpeg4_vaapi_hwaccel_deps="vaapi"
2556 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2557 mpeg4_vdpau_decoder_deps="vdpau"
2558 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2559 mpeg4_vdpau_hwaccel_deps="vdpau"
2560 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2561 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2562 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2563 msmpeg4_crystalhd_decoder_select="crystalhd"
2564 vc1_crystalhd_decoder_select="crystalhd"
2565 vc1_d3d11va_hwaccel_deps="d3d11va"
2566 vc1_d3d11va_hwaccel_select="vc1_decoder"
2567 vc1_dxva2_hwaccel_deps="dxva2"
2568 vc1_dxva2_hwaccel_select="vc1_decoder"
2569 vc1_mmal_decoder_deps="mmal"
2570 vc1_mmal_decoder_select="mmal"
2571 vc1_mmal_hwaccel_deps="mmal"
2572 vc1_qsv_hwaccel_deps="libmfx"
2573 vc1_qsv_hwaccel_select="qsvdec_vc1"
2574 vc1_vaapi_hwaccel_deps="vaapi"
2575 vc1_vaapi_hwaccel_select="vc1_decoder"
2576 vc1_vdpau_decoder_deps="vdpau"
2577 vc1_vdpau_decoder_select="vc1_decoder"
2578 vc1_vdpau_hwaccel_deps="vdpau"
2579 vc1_vdpau_hwaccel_select="vc1_decoder"
2580 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2581 vp9_d3d11va_hwaccel_select="vp9_decoder"
2582 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2583 vp9_dxva2_hwaccel_select="vp9_decoder"
2584 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2585 vp9_vaapi_hwaccel_select="vp9_decoder"
2586 wmv3_crystalhd_decoder_select="crystalhd"
2587 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2588 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2589 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2590 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2591 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2592
2593 # parsers
2594 h264_parser_select="h264_decoder"
2595 hevc_parser_select="golomb"
2596 mpegvideo_parser_select="mpegvideo"
2597 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2598 vc1_parser_select="mpegvideo startcode vc1_decoder"
2599
2600 # bitstream_filters
2601 mjpeg2jpeg_bsf_select="jpegtables"
2602
2603 # external libraries
2604 chromaprint_muxer_deps="chromaprint"
2605 libcelt_decoder_deps="libcelt"
2606 libdcadec_decoder_deps="libdcadec"
2607 libfaac_encoder_deps="libfaac"
2608 libfaac_encoder_select="audio_frame_queue"
2609 libfdk_aac_decoder_deps="libfdk_aac"
2610 libfdk_aac_encoder_deps="libfdk_aac"
2611 libfdk_aac_encoder_select="audio_frame_queue"
2612 libgme_demuxer_deps="libgme"
2613 libgsm_decoder_deps="libgsm"
2614 libgsm_encoder_deps="libgsm"
2615 libgsm_ms_decoder_deps="libgsm"
2616 libgsm_ms_encoder_deps="libgsm"
2617 libilbc_decoder_deps="libilbc"
2618 libilbc_encoder_deps="libilbc"
2619 libkvazaar_encoder_deps="libkvazaar"
2620 libmodplug_demuxer_deps="libmodplug"
2621 libmp3lame_encoder_deps="libmp3lame"
2622 libmp3lame_encoder_select="audio_frame_queue"
2623 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2624 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2625 libopencore_amrnb_encoder_select="audio_frame_queue"
2626 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2627 libopenh264_encoder_deps="libopenh264"
2628 libopenjpeg_decoder_deps="libopenjpeg"
2629 libopenjpeg_encoder_deps="libopenjpeg"
2630 libopus_decoder_deps="libopus"
2631 libopus_encoder_deps="libopus"
2632 libopus_encoder_select="audio_frame_queue"
2633 libschroedinger_decoder_deps="libschroedinger"
2634 libschroedinger_encoder_deps="libschroedinger"
2635 libshine_encoder_deps="libshine"
2636 libshine_encoder_select="audio_frame_queue"
2637 libspeex_decoder_deps="libspeex"
2638 libspeex_encoder_deps="libspeex"
2639 libspeex_encoder_select="audio_frame_queue"
2640 libtheora_encoder_deps="libtheora"
2641 libtwolame_encoder_deps="libtwolame"
2642 libutvideo_decoder_deps="libutvideo"
2643 libutvideo_encoder_deps="libutvideo"
2644 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2645 libvorbis_decoder_deps="libvorbis"
2646 libvorbis_encoder_deps="libvorbis"
2647 libvorbis_encoder_select="audio_frame_queue"
2648 libvpx_vp8_decoder_deps="libvpx"
2649 libvpx_vp8_encoder_deps="libvpx"
2650 libvpx_vp9_decoder_deps="libvpx"
2651 libvpx_vp9_encoder_deps="libvpx"
2652 libwavpack_encoder_deps="libwavpack"
2653 libwebp_encoder_deps="libwebp"
2654 libwebp_anim_encoder_deps="libwebp"
2655 libx262_encoder_deps="libx262"
2656 libx264_encoder_deps="libx264"
2657 libx264rgb_encoder_deps="libx264"
2658 libx264rgb_encoder_select="libx264_encoder"
2659 libx265_encoder_deps="libx265"
2660 libxavs_encoder_deps="libxavs"
2661 libxvid_encoder_deps="libxvid"
2662 libzvbi_teletext_decoder_deps="libzvbi"
2663 nvenc_encoder_deps="nvenc"
2664 nvenc_h264_encoder_deps="nvenc"
2665 nvenc_hevc_encoder_deps="nvenc"
2666
2667 # demuxers / muxers
2668 ac3_demuxer_select="ac3_parser"
2669 asf_demuxer_select="riffdec"
2670 asf_o_demuxer_select="riffdec"
2671 asf_muxer_select="riffenc"
2672 asf_stream_muxer_select="asf_muxer"
2673 avi_demuxer_select="riffdec exif"
2674 avi_muxer_select="riffenc"
2675 avisynth_demuxer_deps="avisynth"
2676 avisynth_demuxer_select="riffdec"
2677 caf_demuxer_select="riffdec"
2678 dash_muxer_select="mp4_muxer"
2679 dirac_demuxer_select="dirac_parser"
2680 dts_demuxer_select="dca_parser"
2681 dtshd_demuxer_select="dca_parser"
2682 dv_demuxer_select="dvprofile"
2683 dv_muxer_select="dvprofile"
2684 dxa_demuxer_select="riffdec"
2685 eac3_demuxer_select="ac3_parser"
2686 f4v_muxer_select="mov_muxer"
2687 flac_demuxer_select="flac_parser"
2688 hds_muxer_select="flv_muxer"
2689 hls_muxer_select="mpegts_muxer"
2690 image2_alias_pix_demuxer_select="image2_demuxer"
2691 image2_brender_pix_demuxer_select="image2_demuxer"
2692 ipod_muxer_select="mov_muxer"
2693 ismv_muxer_select="mov_muxer"
2694 libnut_demuxer_deps="libnut"
2695 libnut_muxer_deps="libnut"
2696 matroska_audio_muxer_select="matroska_muxer"
2697 matroska_demuxer_select="riffdec"
2698 matroska_demuxer_suggest="bzlib lzo zlib"
2699 matroska_muxer_select="riffenc"
2700 mmf_muxer_select="riffenc"
2701 mov_demuxer_select="riffdec"
2702 mov_demuxer_suggest="zlib"
2703 mov_muxer_select="riffenc rtpenc_chain"
2704 mp3_demuxer_select="mpegaudio_parser"
2705 mp4_muxer_select="mov_muxer"
2706 mpegts_muxer_select="adts_muxer latm_muxer"
2707 mpegtsraw_demuxer_select="mpegts_demuxer"
2708 mxf_d10_muxer_select="mxf_muxer"
2709 mxf_opatom_muxer_select="mxf_muxer"
2710 nut_muxer_select="riffenc"
2711 nuv_demuxer_select="riffdec"
2712 oga_muxer_select="ogg_muxer"
2713 ogg_demuxer_select="dirac_parse"
2714 opus_muxer_select="ogg_muxer"
2715 psp_muxer_select="mov_muxer"
2716 rtp_demuxer_select="sdp_demuxer"
2717 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2718 rtsp_demuxer_select="http_protocol rtpdec"
2719 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2720 sap_demuxer_select="sdp_demuxer"
2721 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2722 sdp_demuxer_select="rtpdec"
2723 smoothstreaming_muxer_select="ismv_muxer"
2724 spdif_muxer_select="aac_parser"
2725 spx_muxer_select="ogg_muxer"
2726 swf_demuxer_suggest="zlib"
2727 tak_demuxer_select="tak_parser"
2728 tg2_muxer_select="mov_muxer"
2729 tgp_muxer_select="mov_muxer"
2730 vobsub_demuxer_select="mpegps_demuxer"
2731 w64_demuxer_select="wav_demuxer"
2732 w64_muxer_select="wav_muxer"
2733 wav_demuxer_select="riffdec"
2734 wav_muxer_select="riffenc"
2735 webm_muxer_select="riffenc"
2736 webm_dash_manifest_demuxer_select="matroska_demuxer"
2737 wtv_demuxer_select="riffdec"
2738 wtv_muxer_select="riffenc"
2739 xmv_demuxer_select="riffdec"
2740 xwma_demuxer_select="riffdec"
2741
2742 # indevs / outdevs
2743 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2744 alsa_outdev_deps="alsa_asoundlib_h"
2745 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2746 avfoundation_indev_select="avfoundation"
2747 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2748 caca_outdev_deps="libcaca"
2749 decklink_indev_deps="decklink pthreads"
2750 decklink_indev_extralibs="-lstdc++"
2751 decklink_outdev_deps="decklink pthreads"
2752 decklink_outdev_extralibs="-lstdc++"
2753 dshow_indev_deps="IBaseFilter"
2754 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2755 dv1394_indev_deps="dv1394"
2756 dv1394_indev_select="dv_demuxer"
2757 fbdev_indev_deps="linux_fb_h"
2758 fbdev_outdev_deps="linux_fb_h"
2759 gdigrab_indev_deps="CreateDIBSection"
2760 gdigrab_indev_extralibs="-lgdi32"
2761 gdigrab_indev_select="bmp_decoder"
2762 iec61883_indev_deps="libiec61883"
2763 jack_indev_deps="jack_jack_h"
2764 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2765 lavfi_indev_deps="avfilter"
2766 libcdio_indev_deps="libcdio"
2767 libdc1394_indev_deps="libdc1394"
2768 libv4l2_indev_deps="libv4l2"
2769 openal_indev_deps="openal"
2770 opengl_outdev_deps="opengl"
2771 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2772 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2773 pulse_indev_deps="libpulse"
2774 pulse_outdev_deps="libpulse"
2775 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2776 qtkit_indev_select="qtkit"
2777 sdl_outdev_deps="sdl"
2778 sndio_indev_deps="sndio_h"
2779 sndio_outdev_deps="sndio_h"
2780 v4l_indev_deps="linux_videodev_h"
2781 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2782 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2783 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2784 vfwcap_indev_extralibs="-lavicap32"
2785 x11grab_indev_deps="x11grab"
2786 x11grab_xcb_indev_deps="libxcb"
2787 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2788 xv_outdev_extralibs="-lXv -lX11 -lXext"
2789
2790 # protocols
2791 async_protocol_deps="threads"
2792 bluray_protocol_deps="libbluray"
2793 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2794 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2795 ffrtmpcrypt_protocol_select="tcp_protocol"
2796 ffrtmphttp_protocol_deps="!librtmp_protocol"
2797 ffrtmphttp_protocol_select="http_protocol"
2798 ftp_protocol_select="tcp_protocol"
2799 gopher_protocol_select="network"
2800 http_protocol_select="tcp_protocol"
2801 httpproxy_protocol_select="tcp_protocol"
2802 https_protocol_select="tls_protocol"
2803 icecast_protocol_select="http_protocol"
2804 librtmp_protocol_deps="librtmp"
2805 librtmpe_protocol_deps="librtmp"
2806 librtmps_protocol_deps="librtmp"
2807 librtmpt_protocol_deps="librtmp"
2808 librtmpte_protocol_deps="librtmp"
2809 libsmbclient_protocol_deps="libsmbclient gplv3"
2810 libssh_protocol_deps="libssh"
2811 mmsh_protocol_select="http_protocol"
2812 mmst_protocol_select="network"
2813 rtmp_protocol_deps="!librtmp_protocol"
2814 rtmp_protocol_select="tcp_protocol"
2815 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2816 rtmps_protocol_deps="!librtmp_protocol"
2817 rtmps_protocol_select="tls_protocol"
2818 rtmpt_protocol_select="ffrtmphttp_protocol"
2819 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2820 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2821 rtp_protocol_select="udp_protocol"
2822 sctp_protocol_deps="struct_sctp_event_subscribe"
2823 sctp_protocol_select="network"
2824 srtp_protocol_select="rtp_protocol"
2825 tcp_protocol_select="network"
2826 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2827 tls_gnutls_protocol_select="tcp_protocol"
2828 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2829 tls_openssl_protocol_select="tcp_protocol"
2830 tls_schannel_protocol_deps="schannel"
2831 tls_schannel_protocol_select="tcp_protocol"
2832 tls_securetransport_protocol_deps="securetransport"
2833 tls_securetransport_protocol_select="tcp_protocol"
2834 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2835 udp_protocol_select="network"
2836 udplite_protocol_select="network"
2837 unix_protocol_deps="sys_un_h"
2838 unix_protocol_select="network"
2839
2840 # filters
2841 afftfilt_filter_deps="avcodec"
2842 afftfilt_filter_select="fft"
2843 amovie_filter_deps="avcodec avformat"
2844 aresample_filter_deps="swresample"
2845 ass_filter_deps="libass"
2846 asyncts_filter_deps="avresample"
2847 atempo_filter_deps="avcodec"
2848 atempo_filter_select="rdft"
2849 azmq_filter_deps="libzmq"
2850 blackframe_filter_deps="gpl"
2851 boxblur_filter_deps="gpl"
2852 bs2b_filter_deps="libbs2b"
2853 colormatrix_filter_deps="gpl"
2854 cover_rect_filter_deps="avcodec avformat gpl"
2855 cropdetect_filter_deps="gpl"
2856 delogo_filter_deps="gpl"
2857 deshake_filter_select="pixelutils"
2858 drawtext_filter_deps="libfreetype"
2859 ebur128_filter_deps="gpl"
2860 eq_filter_deps="gpl"
2861 fftfilt_filter_deps="avcodec"
2862 fftfilt_filter_select="rdft"
2863 find_rect_filter_deps="avcodec avformat gpl"
2864 firequalizer_filter_deps="avcodec"
2865 firequalizer_filter_select="rdft"
2866 flite_filter_deps="libflite"
2867 frei0r_filter_deps="frei0r dlopen"
2868 frei0r_src_filter_deps="frei0r dlopen"
2869 fspp_filter_deps="gpl"
2870 geq_filter_deps="gpl"
2871 histeq_filter_deps="gpl"
2872 hqdn3d_filter_deps="gpl"
2873 interlace_filter_deps="gpl"
2874 kerndeint_filter_deps="gpl"
2875 ladspa_filter_deps="ladspa dlopen"
2876 mcdeint_filter_deps="avcodec gpl"
2877 movie_filter_deps="avcodec avformat"
2878 mpdecimate_filter_deps="gpl"
2879 mpdecimate_filter_select="pixelutils"
2880 mptestsrc_filter_deps="gpl"
2881 negate_filter_deps="lut_filter"
2882 nnedi_filter_deps="gpl"
2883 ocr_filter_deps="libtesseract"
2884 ocv_filter_deps="libopencv"
2885 owdenoise_filter_deps="gpl"
2886 pan_filter_deps="swresample"
2887 perspective_filter_deps="gpl"
2888 phase_filter_deps="gpl"
2889 pp7_filter_deps="gpl"
2890 pp_filter_deps="gpl postproc"
2891 pullup_filter_deps="gpl"
2892 removelogo_filter_deps="avcodec avformat swscale"
2893 repeatfields_filter_deps="gpl"
2894 resample_filter_deps="avresample"
2895 rubberband_filter_deps="librubberband"
2896 sab_filter_deps="gpl swscale"
2897 scale2ref_filter_deps="swscale"
2898 scale_filter_deps="swscale"
2899 select_filter_select="pixelutils"
2900 showcqt_filter_deps="avcodec avformat swscale"
2901 showcqt_filter_select="fft"
2902 showfreqs_filter_deps="avcodec"
2903 showfreqs_filter_select="fft"
2904 showspectrum_filter_deps="avcodec"
2905 showspectrum_filter_select="fft"
2906 showspectrumpic_filter_deps="avcodec"
2907 showspectrumpic_filter_select="fft"
2908 smartblur_filter_deps="gpl swscale"
2909 sofalizer_filter_deps="netcdf avcodec"
2910 sofalizer_filter_select="fft"
2911 spectrumsynth_filter_deps="avcodec"
2912 spectrumsynth_filter_select="fft"
2913 spp_filter_deps="gpl avcodec"
2914 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2915 stereo3d_filter_deps="gpl"
2916 subtitles_filter_deps="avformat avcodec libass"
2917 super2xsai_filter_deps="gpl"
2918 pixfmts_super2xsai_test_deps="super2xsai_filter"
2919 tinterlace_filter_deps="gpl"
2920 tinterlace_merge_test_deps="tinterlace_filter"
2921 tinterlace_pad_test_deps="tinterlace_filter"
2922 uspp_filter_deps="gpl avcodec"
2923 vidstabdetect_filter_deps="libvidstab"
2924 vidstabtransform_filter_deps="libvidstab"
2925 zmq_filter_deps="libzmq"
2926 zoompan_filter_deps="swscale"
2927 zscale_filter_deps="libzimg"
2928
2929 # examples
2930 avcodec_example_deps="avcodec avutil"
2931 avio_dir_cmd="avformat avutil"
2932 avio_reading="avformat avcodec avutil"
2933 decoding_encoding_example_deps="avcodec avformat avutil"
2934 demuxing_decoding_example_deps="avcodec avformat avutil"
2935 extract_mvs_example_deps="avcodec avformat avutil"
2936 filter_audio_example_deps="avfilter avutil"
2937 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2938 filtering_video_example_deps="avfilter avcodec avformat avutil"
2939 metadata_example_deps="avformat avutil"
2940 muxing_example_deps="avcodec avformat avutil swscale"
2941 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2942 remuxing_example_deps="avcodec avformat avutil"
2943 resampling_audio_example_deps="avutil swresample"
2944 scaling_video_example_deps="avutil swscale"
2945 transcode_aac_example_deps="avcodec avformat swresample"
2946 transcoding_example_deps="avfilter avcodec avformat avutil"
2947
2948 # libraries, in linking order
2949 avcodec_deps="avutil"
2950 avdevice_deps="avformat avcodec avutil"
2951 avfilter_deps="avutil"
2952 avformat_deps="avcodec avutil"
2953 avresample_deps="avutil"
2954 postproc_deps="avutil gpl"
2955 swresample_deps="avutil"
2956 swscale_deps="avutil"
2957
2958 # programs
2959 ffmpeg_deps="avcodec avfilter avformat swresample"
2960 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2961                null_filter
2962                setpts_filter trim_filter"
2963 ffplay_deps="avcodec avformat swscale swresample sdl"
2964 ffplay_libs='$sdl_libs'
2965 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2966 ffprobe_deps="avcodec avformat"
2967 ffserver_deps="avformat fork sarestart"
2968 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2969
2970 # documentation
2971 podpages_deps="perl"
2972 manpages_deps="perl pod2man"
2973 htmlpages_deps="perl"
2974 htmlpages_deps_any="makeinfo_html texi2html"
2975 txtpages_deps="perl makeinfo"
2976 doc_deps_any="manpages htmlpages podpages txtpages"
2977
2978 # default parameters
2979
2980 logfile="config.log"
2981
2982 # installation paths
2983 prefix_default="/usr/local"
2984 bindir_default='${prefix}/bin'
2985 datadir_default='${prefix}/share/ffmpeg'
2986 docdir_default='${prefix}/share/doc/ffmpeg'
2987 incdir_default='${prefix}/include'
2988 libdir_default='${prefix}/lib'
2989 mandir_default='${prefix}/share/man'
2990
2991 # toolchain
2992 ar_default="ar"
2993 cc_default="gcc"
2994 cxx_default="g++"
2995 host_cc_default="gcc"
2996 cp_f="cp -f"
2997 doxygen_default="doxygen"
2998 install="install"
2999 ln_s="ln -s -f"
3000 nm_default="nm -g"
3001 objformat="elf"
3002 pkg_config_default=pkg-config
3003 ranlib_default="ranlib"
3004 strip_default="strip"
3005 yasmexe_default="yasm"
3006 windres_default="windres"
3007
3008 # OS
3009 target_os_default=$(tolower $(uname -s))
3010 host_os=$target_os_default
3011
3012 # machine
3013 if test "$target_os_default" = aix; then
3014     arch_default=$(uname -p)
3015     strip_default="strip -X32_64"
3016 else
3017     arch_default=$(uname -m)
3018 fi
3019 cpu="generic"
3020 intrinsics="none"
3021
3022 # configurable options
3023 enable $PROGRAM_LIST
3024 enable $DOCUMENT_LIST
3025 enable $EXAMPLE_LIST
3026 enable $(filter_out avresample $LIBRARY_LIST)
3027 enable stripping
3028
3029 enable asm
3030 enable debug
3031 enable doc
3032 enable faan faandct faanidct
3033 enable optimizations
3034 enable runtime_cpudetect
3035 enable safe_bitstream_reader
3036 enable static
3037 enable swscale_alpha
3038 enable valgrind_backtrace
3039
3040 sws_max_filter_size_default=256
3041 set_default sws_max_filter_size
3042
3043 # Enable hwaccels by default.
3044 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3045 enable xlib
3046
3047 # build settings
3048 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3049 LIBPREF="lib"
3050 LIBSUF=".a"
3051 FULLNAME='$(NAME)$(BUILDSUF)'
3052 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3053 SLIBPREF="lib"
3054 SLIBSUF=".so"
3055 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3056 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3057 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3058 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3059 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3060 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3061
3062 asflags_filter=echo
3063 cflags_filter=echo
3064 ldflags_filter=echo
3065
3066 AS_C='-c'
3067 AS_O='-o $@'
3068 CC_C='-c'
3069 CC_E='-E -o $@'
3070 CC_O='-o $@'
3071 CXX_C='-c'
3072 CXX_O='-o $@'
3073 OBJCC_C='-c'
3074 OBJCC_E='-E -o $@'
3075 OBJCC_O='-o $@'
3076 LD_O='-o $@'
3077 LD_LIB='-l%'
3078 LD_PATH='-L'
3079 HOSTCC_C='-c'
3080 HOSTCC_E='-E -o $@'
3081 HOSTCC_O='-o $@'
3082 HOSTLD_O='-o $@'
3083
3084 host_libs='-lm'
3085 host_cflags_filter=echo
3086 host_ldflags_filter=echo
3087
3088 target_path='$(CURDIR)'
3089
3090 # since the object filename is not given with the -MM flag, the compiler
3091 # is only able to print the basename, and we must add the path ourselves
3092 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3093 DEPFLAGS='-MM'
3094
3095 # find source path
3096 if test -f configure; then
3097     source_path=.
3098 else
3099     source_path=$(cd $(dirname "$0"); pwd)
3100     case "$source_path" in
3101         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3102     esac
3103     test -e "$source_path/config.h" &&
3104         die "Out of tree builds are impossible with config.h in source dir."
3105 fi
3106
3107 for v in "$@"; do
3108     r=${v#*=}
3109     l=${v%"$r"}
3110     r=$(sh_quote "$r")
3111     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3112 done
3113
3114 find_things(){
3115     thing=$1
3116     pattern=$2
3117     file=$source_path/$3
3118     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3119 }
3120
3121 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3122 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3123 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3124 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3125 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3126 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3127 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3128 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3129 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3130 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3131 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3132
3133 ALL_COMPONENTS="
3134     $BSF_LIST
3135     $DECODER_LIST
3136     $DEMUXER_LIST
3137     $ENCODER_LIST
3138     $FILTER_LIST
3139     $HWACCEL_LIST
3140     $INDEV_LIST
3141     $MUXER_LIST
3142     $OUTDEV_LIST
3143     $PARSER_LIST
3144     $PROTOCOL_LIST
3145 "
3146
3147 for n in $COMPONENT_LIST; do
3148     v=$(toupper ${n%s})_LIST
3149     eval enable \$$v
3150     eval ${n}_if_any="\$$v"
3151 done
3152
3153 enable $ARCH_EXT_LIST
3154
3155 die_unknown(){
3156     echo "Unknown option \"$1\"."
3157     echo "See $0 --help for available options."
3158     exit 1
3159 }
3160
3161 print_in_columns() {
3162     cols=$(expr $ncols / 24)
3163     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3164 }
3165
3166 show_list() {
3167     suffix=_$1
3168     shift
3169     echo $* | sed s/$suffix//g | print_in_columns
3170     exit 0
3171 }
3172
3173 rand_list(){
3174     IFS=', '
3175     set -- $*
3176     unset IFS
3177     for thing; do
3178         comp=${thing%:*}
3179         prob=${thing#$comp}
3180         prob=${prob#:}
3181         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3182         echo "prob ${prob:-0.5}"
3183         printf '%s\n' $comp
3184     done
3185 }
3186
3187 do_random(){
3188     action=$1
3189     shift
3190     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3191     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3192 }
3193
3194 for opt do
3195     optval="${opt#*=}"
3196     case "$opt" in
3197         --extra-ldflags=*)
3198             add_ldflags $optval
3199         ;;
3200         --extra-ldexeflags=*)
3201             add_ldexeflags $optval
3202         ;;
3203         --extra-ldlibflags=*)
3204             add_ldlibflags $optval
3205         ;;
3206         --extra-libs=*)
3207             add_extralibs $optval
3208         ;;
3209         --disable-devices)
3210             disable $INDEV_LIST $OUTDEV_LIST
3211         ;;
3212         --enable-debug=*)
3213             debuglevel="$optval"
3214         ;;
3215         --disable-programs)
3216             disable $PROGRAM_LIST
3217         ;;
3218         --disable-everything)
3219             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3220         ;;
3221         --disable-all)
3222             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3223             disable $LIBRARY_LIST $PROGRAM_LIST doc
3224             enable avutil
3225         ;;
3226         --enable-random|--disable-random)
3227             action=${opt%%-random}
3228             do_random ${action#--} $COMPONENT_LIST
3229         ;;
3230         --enable-random=*|--disable-random=*)
3231             action=${opt%%-random=*}
3232             do_random ${action#--} $optval
3233         ;;
3234         --enable-*=*|--disable-*=*)
3235             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3236             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3237             eval list=\$$(toupper $thing)_LIST
3238             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3239             list=$(filter "$name" $list)
3240             [ "$list" = "" ] && warn "Option $opt did not match anything"
3241             $action $list
3242         ;;
3243         --enable-?*|--disable-?*)
3244             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3245             if is_in $option $COMPONENT_LIST; then
3246                 test $action = disable && action=unset
3247                 eval $action \$$(toupper ${option%s})_LIST
3248             elif is_in $option $CMDLINE_SELECT; then
3249                 $action $option
3250             else
3251                 die_unknown $opt
3252             fi
3253         ;;
3254         --list-*)
3255             NAME="${opt#--list-}"
3256             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3257             NAME=${NAME%s}
3258             eval show_list $NAME \$$(toupper $NAME)_LIST
3259         ;;
3260         --help|-h) show_help
3261         ;;
3262         --fatal-warnings) enable fatal_warnings
3263         ;;
3264         *)
3265             optname="${opt%%=*}"
3266             optname="${optname#--}"
3267             optname=$(echo "$optname" | sed 's/-/_/g')
3268             if is_in $optname $CMDLINE_SET; then
3269                 eval $optname='$optval'
3270             elif is_in $optname $CMDLINE_APPEND; then
3271                 append $optname "$optval"
3272             else
3273                 die_unknown $opt
3274             fi
3275         ;;
3276     esac
3277 done
3278
3279 for e in $env; do
3280     eval "export $e"
3281 done
3282
3283 disabled logging && logfile=/dev/null
3284
3285 # Disable all the library-specific components if the library itself
3286 # is disabled, see AVCODEC_LIST and following _LIST variables.
3287
3288 disable_components(){
3289     disabled ${1} && disable $(
3290         eval components="\$$(toupper ${1})_COMPONENTS"
3291         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3292     )
3293 }
3294
3295 map 'disable_components $v' $LIBRARY_LIST
3296
3297 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3298 set >> $logfile
3299
3300 test -n "$valgrind" && toolchain="valgrind-memcheck"
3301
3302 case "$toolchain" in
3303     *-asan)
3304         cc_default="${toolchain%-asan}"
3305         add_cflags  -fsanitize=address
3306         add_ldflags -fsanitize=address
3307     ;;
3308     *-tsan)
3309         cc_default="${toolchain%-tsan}"
3310         add_cflags  -fsanitize=thread -pie
3311         add_ldflags -fsanitize=thread -pie
3312         case "$toolchain" in
3313             gcc-tsan)
3314                 add_cflags  -fPIC
3315                 add_ldflags -fPIC
3316                 ;;
3317         esac
3318     ;;
3319     *-usan)
3320         cc_default="${toolchain%-usan}"
3321         add_cflags  -fsanitize=undefined
3322         add_ldflags -fsanitize=undefined
3323     ;;
3324     valgrind-*)
3325         target_exec_default="valgrind"
3326         case "$toolchain" in
3327             valgrind-massif)
3328                 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"
3329                 ;;
3330             valgrind-memcheck)
3331                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3332                 ;;
3333         esac
3334     ;;
3335     msvc)
3336         # Check whether the current MSVC version needs the C99 converter.
3337         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3338         # support enough of C99 to build ffmpeg. Default to the new
3339         # behaviour if the regexp was unable to match anything, since this
3340         # successfully parses the version number of existing supported
3341         # versions that require the converter (MSVC 2010 and 2012).
3342         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3343         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3344             cc_default="cl"
3345         else
3346             cc_default="c99wrap cl"
3347         fi
3348         ld_default="$source_path/compat/windows/mslink"
3349         nm_default="dumpbin -symbols"
3350         ar_default="lib"
3351         case "$arch" in
3352         arm*)
3353             as_default="armasm"
3354             ;;
3355         esac
3356         target_os_default="win32"
3357         # Use a relative path for TMPDIR. This makes sure all the
3358         # ffconf temp files are written with a relative path, avoiding
3359         # issues with msys/win32 path conversion for MSVC parameters
3360         # such as -Fo<file> or -out:<file>.
3361         TMPDIR=.
3362     ;;
3363     icl)
3364         cc_default="icl"
3365         ld_default="xilink"
3366         nm_default="dumpbin -symbols"
3367         ar_default="xilib"
3368         target_os_default="win32"
3369         TMPDIR=.
3370     ;;
3371     gcov)
3372         add_cflags  -fprofile-arcs -ftest-coverage
3373         add_ldflags -fprofile-arcs -ftest-coverage
3374     ;;
3375     hardened)
3376         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3377         add_cflags   -fno-strict-overflow -fstack-protector-all
3378         add_ldflags  -Wl,-z,relro -Wl,-z,now
3379     ;;
3380     ?*)
3381         die "Unknown toolchain $toolchain"
3382     ;;
3383 esac
3384
3385 test -n "$cross_prefix" && enable cross_compile
3386
3387 if enabled cross_compile; then
3388     test -n "$arch" && test -n "$target_os" ||
3389         die "Must specify target arch and OS when cross-compiling"
3390 fi
3391
3392 ar_default="${cross_prefix}${ar_default}"
3393 cc_default="${cross_prefix}${cc_default}"
3394 cxx_default="${cross_prefix}${cxx_default}"
3395 nm_default="${cross_prefix}${nm_default}"
3396 pkg_config_default="${cross_prefix}${pkg_config_default}"
3397 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3398     ranlib_default="${cross_prefix}${ranlib_default} -D"
3399 else
3400     ranlib_default="${cross_prefix}${ranlib_default}"
3401 fi
3402 strip_default="${cross_prefix}${strip_default}"
3403 windres_default="${cross_prefix}${windres_default}"
3404
3405 sysinclude_default="${sysroot}/usr/include"
3406
3407 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3408     target_exec target_os yasmexe
3409 enabled cross_compile || host_cc_default=$cc
3410 set_default host_cc
3411
3412 pkg_config_fail_message=""
3413 if ! $pkg_config --version >/dev/null 2>&1; then
3414     warn "$pkg_config not found, library detection may fail."
3415     pkg_config=false
3416 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3417     pkg_config_fail_message="
3418 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3419 fi
3420
3421 if test $doxygen != $doxygen_default && \
3422   ! $doxygen --version >/dev/null 2>&1; then
3423     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3424 fi
3425
3426 exesuf() {
3427     case $1 in
3428         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3429     esac
3430 }
3431
3432 EXESUF=$(exesuf $target_os)
3433 HOSTEXESUF=$(exesuf $host_os)
3434
3435 # set temporary file name
3436 : ${TMPDIR:=$TEMPDIR}
3437 : ${TMPDIR:=$TMP}
3438 : ${TMPDIR:=/tmp}
3439
3440 if [ -n "$tempprefix" ] ; then
3441     mktemp(){
3442         echo $tempprefix.${HOSTNAME}.${UID}
3443     }
3444 elif ! check_cmd mktemp -u XXXXXX; then
3445     # simple replacement for missing mktemp
3446     # NOT SAFE FOR GENERAL USE
3447     mktemp(){
3448         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3449     }
3450 fi
3451
3452 tmpfile(){
3453     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3454         (set -C; exec > $tmp) 2>/dev/null ||
3455         die "Unable to create temporary file in $TMPDIR."
3456     append TMPFILES $tmp
3457     eval $1=$tmp
3458 }
3459
3460 trap 'rm -f -- $TMPFILES' EXIT
3461
3462 tmpfile TMPASM .asm
3463 tmpfile TMPC   .c
3464 tmpfile TMPCPP .cpp
3465 tmpfile TMPE   $EXESUF
3466 tmpfile TMPH   .h
3467 tmpfile TMPM   .m
3468 tmpfile TMPO   .o
3469 tmpfile TMPS   .S
3470 tmpfile TMPSH  .sh
3471 tmpfile TMPV   .ver
3472
3473 unset -f mktemp
3474
3475 chmod +x $TMPE
3476
3477 # make sure we can execute files in $TMPDIR
3478 cat > $TMPSH 2>> $logfile <<EOF
3479 #! /bin/sh
3480 EOF
3481 chmod +x $TMPSH >> $logfile 2>&1
3482 if ! $TMPSH >> $logfile 2>&1; then
3483     cat <<EOF
3484 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3485 variable to another directory and make sure that it is not mounted noexec.
3486 EOF
3487     die "Sanity test failed."
3488 fi
3489
3490 armasm_flags(){
3491     for flag; do
3492         case $flag in
3493             # Filter out MSVC cl.exe options from cflags that shouldn't
3494             # be passed to gas-preprocessor
3495             -M[TD]*)                                            ;;
3496             *)                  echo $flag                      ;;
3497         esac
3498    done
3499 }
3500
3501 ccc_flags(){
3502     for flag; do
3503         case $flag in
3504             -std=c99)           echo -c99                       ;;
3505             -mcpu=*)            echo -arch ${flag#*=}           ;;
3506             -mieee)             echo -ieee                      ;;
3507             -O*|-fast)          echo $flag                      ;;
3508             -fno-math-errno)    echo -assume nomath_errno       ;;
3509             -g)                 echo -g3                        ;;
3510             -Wall)              echo -msg_enable level2         ;;
3511             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3512             -Wl,*)              echo $flag                      ;;
3513             -f*|-W*)                                            ;;
3514             *)                  echo $flag                      ;;
3515         esac
3516    done
3517 }
3518
3519 cparser_flags(){
3520     for flag; do
3521         case $flag in
3522             -Wno-switch)             echo -Wno-switch-enum ;;
3523             -Wno-format-zero-length) ;;
3524             -Wdisabled-optimization) ;;
3525             -Wno-pointer-sign)       echo -Wno-other ;;
3526             *)                       echo $flag ;;
3527         esac
3528     done
3529 }
3530
3531 msvc_common_flags(){
3532     for flag; do
3533         case $flag in
3534             # In addition to specifying certain flags under the compiler
3535             # specific filters, they must be specified here as well or else the
3536             # generic catch all at the bottom will print the original flag.
3537             -Wall)                ;;
3538             -std=c99)             ;;
3539             # Common flags
3540             -fomit-frame-pointer) ;;
3541             -g)                   echo -Z7 ;;
3542             -fno-math-errno)      ;;
3543             -fno-common)          ;;
3544             -fno-signed-zeros)    ;;
3545             -fPIC)                ;;
3546             -mthumb)              ;;
3547             -march=*)             ;;
3548             -lz)                  echo zlib.lib ;;
3549             -lavifil32)           echo vfw32.lib ;;
3550             -lavicap32)           echo vfw32.lib user32.lib ;;
3551             -lx264)               echo libx264.lib ;;
3552             -l*)                  echo ${flag#-l}.lib ;;
3553             -LARGEADDRESSAWARE)   echo $flag ;;
3554             -L*)                  echo -libpath:${flag#-L} ;;
3555             *)                    echo $flag ;;
3556         esac
3557     done
3558 }
3559
3560 msvc_flags(){
3561     msvc_common_flags "$@"
3562     for flag; do
3563         case $flag in
3564             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3565                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3566                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3567                                        -wd4307 \
3568                                        -wd4273 -wd4554 -wd4701 ;;
3569         esac
3570     done
3571 }
3572
3573 icl_flags(){
3574     msvc_common_flags "$@"
3575     for flag; do
3576         case $flag in
3577             # Despite what Intel's documentation says -Wall, which is supported
3578             # on Windows, does enable remarks so disable them here.
3579             -Wall)                echo $flag -Qdiag-disable:remark ;;
3580             -std=c99)             echo -Qstd=c99 ;;
3581             -flto)                echo -ipo ;;
3582         esac
3583     done
3584 }
3585
3586 icc_flags(){
3587     for flag; do
3588         case $flag in
3589             -flto)                echo -ipo ;;
3590             *)                    echo $flag ;;
3591         esac
3592     done
3593 }
3594
3595 pgi_flags(){
3596     for flag; do
3597         case $flag in
3598             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3599             -fomit-frame-pointer) echo -Mnoframe ;;
3600             -g)                   echo -gopt ;;
3601             *)                    echo $flag ;;
3602         esac
3603     done
3604 }
3605
3606 suncc_flags(){
3607     for flag; do
3608         case $flag in
3609             -march=*|-mcpu=*)
3610                 case "${flag#*=}" in
3611                     native)                   echo -xtarget=native       ;;
3612                     v9|niagara)               echo -xarch=sparc          ;;
3613                     ultrasparc)               echo -xarch=sparcvis       ;;
3614                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3615                     i586|pentium)             echo -xchip=pentium        ;;
3616                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3617                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3618                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3619                     pentium4*)          echo -xtarget=pentium4           ;;
3620                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3621                     *-sse3)             echo -xarch=sse3                 ;;
3622                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3623                     bonnell)                   echo -xarch=ssse3         ;;
3624                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3625                     westmere)                  echo -xtarget=westmere    ;;
3626                     silvermont)                echo -xarch=sse4_2        ;;
3627                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3628                     core-avx*|ivybridge|haswell|broadwell)
3629                                                echo -xarch=avx           ;;
3630                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3631                     btver1)                    echo -xarch=amdsse4a      ;;
3632                     btver2|bdver*)             echo -xarch=avx           ;;
3633                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3634                     k8|opteron|athlon64|athlon-fx)
3635                                                echo -xarch=sse2a         ;;
3636                     athlon*)                   echo -xarch=pentium_proa  ;;
3637                 esac
3638                 ;;
3639             -std=c99)             echo -xc99              ;;
3640             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3641             -fPIC)                echo -KPIC -xcode=pic32 ;;
3642             -W*,*)                echo $flag              ;;
3643             -f*-*|-W*|-mimpure-text)                      ;;
3644             -shared)              echo -G                 ;;
3645             *)                    echo $flag              ;;
3646         esac
3647     done
3648 }
3649
3650 tms470_flags(){
3651     for flag; do
3652         case $flag in
3653             -march=*|-mcpu=*)
3654                 case "${flag#*=}" in
3655                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3656                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3657                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3658                     armv6*|arm11*)          echo -mv=6   ;;
3659                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3660                                             echo -mv=5e  ;;
3661                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3662                 esac
3663                 ;;
3664             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3665             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3666             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3667             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3668             -msoft-float)   echo --float_support=vfplib       ;;
3669             -O[0-3]|-mf=*)  echo $flag                        ;;
3670             -g)             echo -g -mn                       ;;
3671             -pds=*)         echo $flag                        ;;
3672             -D*|-I*)        echo $flag                        ;;
3673             --gcc|--abi=*)  echo $flag                        ;;
3674             -me)            echo $flag                        ;;
3675         esac
3676     done
3677 }
3678
3679 probe_cc(){
3680     pfx=$1
3681     _cc=$2
3682     first=$3
3683
3684     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3685     unset _ld_o _ldflags _ld_lib _ld_path
3686     unset _depflags _DEPCMD _DEPFLAGS
3687     _flags_filter=echo
3688
3689     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3690         true # no-op to avoid reading stdin in following checks
3691     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3692         _type=llvm_gcc
3693         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3694         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3695         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3696         _cflags_speed='-O3'
3697         _cflags_size='-Os'
3698     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3699         _type=gcc
3700         gcc_version=$($_cc --version | head -n1)
3701         gcc_basever=$($_cc -dumpversion)
3702         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3703         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3704         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3705         case $gcc_basever in
3706             2) ;;
3707             2.*) ;;
3708             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3709         esac
3710         if [ "$first" = true ]; then
3711             case $gcc_basever in
3712                 4.2*)
3713                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3714             esac
3715         fi
3716         _cflags_speed='-O3'
3717         _cflags_size='-Os'
3718     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3719         _type=icc
3720         _ident=$($_cc --version | head -n1)
3721         _depflags='-MMD'
3722         _cflags_speed='-O3'
3723         _cflags_size='-Os'
3724         _cflags_noopt='-O1'
3725         _flags_filter=icc_flags
3726     elif $_cc -v 2>&1 | grep -q xlc; then
3727         _type=xlc
3728         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3729         _cflags_speed='-O5'
3730         _cflags_size='-O5 -qcompact'
3731     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3732         _type=ccc
3733         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3734         _DEPFLAGS='-M'
3735         _cflags_speed='-fast'
3736         _cflags_size='-O1'
3737         _flags_filter=ccc_flags
3738     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3739         test -d "$sysroot" || die "No valid sysroot specified."
3740         _type=armcc
3741         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3742         armcc_conf="$PWD/armcc.conf"
3743         $_cc --arm_linux_configure                 \
3744              --arm_linux_config_file="$armcc_conf" \
3745              --configure_sysroot="$sysroot"        \
3746              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3747              die "Error creating armcc configuration file."
3748         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3749         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3750         as_default="${cross_prefix}gcc"
3751         _depflags='-MMD'
3752         _cflags_speed='-O3'
3753         _cflags_size='-Os'
3754     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3755         _type=tms470
3756         _ident=$($_cc -version | head -n1 | tr -s ' ')
3757         _flags='--gcc --abi=eabi -me'
3758         _cc_e='-ppl -fe=$@'
3759         _cc_o='-fe=$@'
3760         _depflags='-ppa -ppd=$(@:.o=.d)'
3761         _cflags_speed='-O3 -mf=5'
3762         _cflags_size='-O3 -mf=2'
3763         _flags_filter=tms470_flags
3764     elif $_cc -v 2>&1 | grep -q clang; then
3765         _type=clang
3766         _ident=$($_cc --version 2>/dev/null | head -n1)
3767         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3768         _cflags_speed='-O3'
3769         _cflags_size='-Os'
3770     elif $_cc -V 2>&1 | grep -q Sun; then
3771         _type=suncc
3772         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3773         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3774         _DEPFLAGS='-xM1 -xc99'
3775         _ldflags='-std=c99'
3776         _cflags_speed='-O5'
3777         _cflags_size='-O5 -xspace'
3778         _flags_filter=suncc_flags
3779     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3780         _type=pathscale
3781         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3782         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3783         _cflags_speed='-O2'
3784         _cflags_size='-Os'
3785         _flags_filter='filter_out -Wdisabled-optimization'
3786     elif $_cc -v 2>&1 | grep -q Open64; then
3787         _type=open64
3788         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3789         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3790         _cflags_speed='-O2'
3791         _cflags_size='-Os'
3792         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3793     elif $_cc -V 2>&1 | grep -q Portland; then
3794         _type=pgi
3795         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3796         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3797         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3798         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3799         _cflags_noopt="-O"
3800         _flags_filter=pgi_flags
3801     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3802         _type=armasm
3803         _ident=$($_cc | head -n1)
3804         # 4509: "This form of conditional instruction is deprecated"
3805         _flags="-nologo -ignore 4509"
3806         _flags_filter=armasm_flags
3807     elif $_cc 2>&1 | grep -q Intel; then
3808         _type=icl
3809         _ident=$($_cc 2>&1 | head -n1)
3810         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3811         # Not only is O3 broken on 13.x+ but it is slower on all previous
3812         # versions (tested) as well.
3813         _cflags_speed="-O2"
3814         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3815         if $_cc 2>&1 | grep -q Linker; then
3816             _ld_o='-out:$@'
3817         else
3818             _ld_o='-Fe$@'
3819         fi
3820         _cc_o='-Fo$@'
3821         _cc_e='-P'
3822         _flags_filter=icl_flags
3823         _ld_lib='lib%.a'
3824         _ld_path='-libpath:'
3825         # -Qdiag-error to make icl error when seeing certain unknown arguments
3826         _flags='-nologo -Qdiag-error:4044,10157'
3827         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3828         # with MSVC which enables it by default.
3829         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3830         disable stripping
3831     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3832         _type=msvc
3833         _ident=$($_cc 2>&1 | head -n1)
3834         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3835         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3836         _cflags_speed="-O2"
3837         _cflags_size="-O1"
3838         if $_cc -nologo- 2>&1 | grep -q Linker; then
3839             _ld_o='-out:$@'
3840         else
3841             _ld_o='-Fe$@'
3842         fi
3843         _cc_o='-Fo$@'
3844         _cc_e='-P -Fi$@'
3845         _flags_filter=msvc_flags
3846         _ld_lib='lib%.a'
3847         _ld_path='-libpath:'
3848         _flags='-nologo'
3849         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3850         disable stripping
3851     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3852         _type=cparser
3853         _ident=$($_cc --version | head -n1)
3854         _depflags='-MMD'
3855         _cflags_speed='-O4'
3856         _cflags_size='-O2'
3857         _flags_filter=cparser_flags
3858     fi
3859
3860     eval ${pfx}_type=\$_type
3861     eval ${pfx}_ident=\$_ident
3862 }
3863
3864 set_ccvars(){
3865     eval ${1}_C=\${_cc_c-\${${1}_C}}
3866     eval ${1}_E=\${_cc_e-\${${1}_E}}
3867     eval ${1}_O=\${_cc_o-\${${1}_O}}
3868
3869     if [ -n "$_depflags" ]; then
3870         eval ${1}_DEPFLAGS=\$_depflags
3871     else
3872         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3873         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3874         eval DEP${1}FLAGS=\$_flags
3875     fi
3876 }
3877
3878 probe_cc cc "$cc" "true"
3879 cflags_filter=$_flags_filter
3880 cflags_speed=$_cflags_speed
3881 cflags_size=$_cflags_size
3882 cflags_noopt=$_cflags_noopt
3883 add_cflags $_flags $_cflags
3884 cc_ldflags=$_ldflags
3885 set_ccvars CC
3886
3887 probe_cc hostcc "$host_cc"
3888 host_cflags_filter=$_flags_filter
3889 add_host_cflags  $_flags $_cflags
3890 set_ccvars HOSTCC
3891
3892 test -n "$cc_type" && enable $cc_type ||
3893     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3894
3895 : ${as_default:=$cc}
3896 : ${objcc_default:=$cc}
3897 : ${dep_cc_default:=$cc}
3898 : ${ld_default:=$cc}
3899 : ${host_ld_default:=$host_cc}
3900 set_default ar as objcc dep_cc ld host_ld windres
3901
3902 probe_cc as "$as"
3903 asflags_filter=$_flags_filter
3904 add_asflags $_flags $_cflags
3905 set_ccvars AS
3906
3907 probe_cc objcc "$objcc"
3908 objcflags_filter=$_flags_filter
3909 add_objcflags $_flags $_cflags
3910 set_ccvars OBJC
3911
3912 probe_cc ld "$ld"
3913 ldflags_filter=$_flags_filter
3914 add_ldflags $_flags $_ldflags
3915 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3916 LD_O=${_ld_o-$LD_O}
3917 LD_LIB=${_ld_lib-$LD_LIB}
3918 LD_PATH=${_ld_path-$LD_PATH}
3919
3920 probe_cc hostld "$host_ld"
3921 host_ldflags_filter=$_flags_filter
3922 add_host_ldflags $_flags $_ldflags
3923 HOSTLD_O=${_ld_o-$HOSTLD_O}
3924
3925 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3926     probe_cc depcc "$dep_cc"
3927     CCDEP=${_DEPCMD:-$DEPCMD}
3928     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3929     DEPCCFLAGS=$_flags
3930 fi
3931
3932 if $ar 2>&1 | grep -q Microsoft; then
3933     arflags="-nologo"
3934     ar_o='-out:$@'
3935 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3936     arflags="rq"
3937     ar_o='$@'
3938 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3939     arflags='-Xany -r -c'
3940     ar_o='$@'
3941 elif $ar 2>&1 | grep -q "\[D\] "; then
3942     arflags="rcD"
3943     ar_o='$@'
3944 else
3945     arflags="rc"
3946     ar_o='$@'
3947 fi
3948
3949 add_cflags $extra_cflags
3950 add_cxxflags $extra_cxxflags
3951 add_objcflags $extra_objcflags
3952 add_asflags $extra_cflags
3953
3954 if test -n "$sysroot"; then
3955     case "$cc_type" in
3956         gcc|llvm_gcc|clang)
3957             add_cppflags --sysroot="$sysroot"
3958             add_ldflags --sysroot="$sysroot"
3959 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3960             add_cppflags -isysroot "$sysroot"
3961             add_ldflags -isysroot "$sysroot"
3962         ;;
3963         tms470)
3964             add_cppflags -I"$sysinclude"
3965             add_ldflags  --sysroot="$sysroot"
3966         ;;
3967     esac
3968 fi
3969
3970 if test "$cpu" = host; then
3971     enabled cross_compile &&
3972         die "--cpu=host makes no sense when cross-compiling."
3973
3974     case "$cc_type" in
3975         gcc|llvm_gcc)
3976             check_native(){
3977                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3978                 sed -n "/cc1.*$1=/{
3979                             s/.*$1=\\([^ ]*\\).*/\\1/
3980                             p
3981                             q
3982                         }" $TMPE
3983             }
3984             cpu=$(check_native -march || check_native -mcpu)
3985         ;;
3986         clang)
3987             check_native(){
3988                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3989                 sed -n "/cc1.*-target-cpu /{
3990                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3991                             p
3992                             q
3993                         }" $TMPE
3994             }
3995             cpu=$(check_native -march)
3996         ;;
3997     esac
3998
3999     test "${cpu:-host}" = host &&
4000         die "--cpu=host not supported with compiler $cc"
4001 fi
4002
4003 # Deal with common $arch aliases
4004 case "$arch" in
4005     aarch64|arm64)
4006         arch="aarch64"
4007     ;;
4008     arm*|iPad*|iPhone*)
4009         arch="arm"
4010     ;;
4011     mips*|IP*)
4012         case "$arch" in
4013         *el)
4014             add_cppflags -EL
4015             add_ldflags -EL
4016         ;;
4017         *eb)
4018             add_cppflags -EB
4019             add_ldflags -EB
4020         ;;
4021         esac
4022         arch="mips"
4023     ;;
4024     parisc*|hppa*)
4025         arch="parisc"
4026     ;;
4027     "Power Macintosh"|ppc*|powerpc*)
4028         arch="ppc"
4029     ;;
4030     s390|s390x)
4031         arch="s390"
4032     ;;
4033     sh4|sh)
4034         arch="sh4"
4035     ;;
4036     sun4u|sparc*)
4037         arch="sparc"
4038     ;;
4039     tilegx|tile-gx)
4040         arch="tilegx"
4041     ;;
4042     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4043         arch="x86"
4044     ;;
4045 esac
4046
4047 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4048 enable $arch
4049
4050 # Add processor-specific flags
4051 if enabled aarch64; then
4052
4053     case $cpu in
4054         armv*)
4055             cpuflags="-march=$cpu"
4056         ;;
4057         *)
4058             cpuflags="-mcpu=$cpu"
4059         ;;
4060     esac
4061
4062 elif enabled alpha; then
4063
4064     cpuflags="-mcpu=$cpu"
4065
4066 elif enabled arm; then
4067
4068     check_arm_arch() {
4069         check_cpp_condition stddef.h \
4070             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4071             $cpuflags
4072     }
4073
4074     probe_arm_arch() {
4075         if   check_arm_arch 4;        then echo armv4;
4076         elif check_arm_arch 4T;       then echo armv4t;
4077         elif check_arm_arch 5;        then echo armv5;
4078         elif check_arm_arch 5E;       then echo armv5e;
4079         elif check_arm_arch 5T;       then echo armv5t;
4080         elif check_arm_arch 5TE;      then echo armv5te;
4081         elif check_arm_arch 5TEJ;     then echo armv5te;
4082         elif check_arm_arch 6;        then echo armv6;
4083         elif check_arm_arch 6J;       then echo armv6j;
4084         elif check_arm_arch 6K;       then echo armv6k;
4085         elif check_arm_arch 6Z;       then echo armv6z;
4086         elif check_arm_arch 6ZK;      then echo armv6zk;
4087         elif check_arm_arch 6T2;      then echo armv6t2;
4088         elif check_arm_arch 7;        then echo armv7;
4089         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4090         elif check_arm_arch 7S;       then echo armv7-a;
4091         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4092         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4093         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4094         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4095         fi
4096     }
4097
4098     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4099
4100     case $cpu in
4101         armv*)
4102             cpuflags="-march=$cpu"
4103             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4104         ;;
4105         *)
4106             cpuflags="-mcpu=$cpu"
4107             case $cpu in
4108                 cortex-a*)                               subarch=armv7a  ;;
4109                 cortex-r*)                               subarch=armv7r  ;;
4110                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4111                 arm11*)                                  subarch=armv6   ;;
4112                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4113                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4114                 *)                             subarch=$(probe_arm_arch) ;;
4115             esac
4116         ;;
4117     esac
4118
4119     case "$subarch" in
4120         armv5t*)    enable fast_clz                ;;
4121         armv[6-8]*)
4122             enable fast_clz
4123             disabled fast_unaligned || enable fast_unaligned
4124             ;;
4125     esac
4126
4127 elif enabled avr32; then
4128
4129     case $cpu in
4130         ap7[02]0[0-2])
4131             subarch="avr32_ap"
4132             cpuflags="-mpart=$cpu"
4133         ;;
4134         ap)
4135             subarch="avr32_ap"
4136             cpuflags="-march=$cpu"
4137         ;;
4138         uc3[ab]*)
4139             subarch="avr32_uc"
4140             cpuflags="-mcpu=$cpu"
4141         ;;
4142         uc)
4143             subarch="avr32_uc"
4144             cpuflags="-march=$cpu"
4145         ;;
4146     esac
4147
4148 elif enabled bfin; then
4149
4150     cpuflags="-mcpu=$cpu"
4151
4152 elif enabled mips; then
4153
4154     cpuflags="-march=$cpu"
4155
4156     case $cpu in
4157         24kc)
4158             disable mips32r6
4159             disable mips64r2
4160             disable mips64r6
4161             disable mipsfpu
4162             disable mipsdsp
4163             disable mipsdspr2
4164             disable msa
4165         ;;
4166         24kf*)
4167             disable mips32r6
4168             disable mips64r2
4169             disable mips64r6
4170             disable mipsdsp
4171             disable mipsdspr2
4172             disable msa
4173         ;;
4174         24kec|34kc|1004kc)
4175             disable mips32r6
4176             disable mips64r2
4177             disable mips64r6
4178             disable mipsfpu
4179             disable mipsdspr2
4180             disable msa
4181         ;;
4182         24kef*|34kf*|1004kf*)
4183             disable mips32r6
4184             disable mips64r2
4185             disable mips64r6
4186             disable mipsdspr2
4187             disable msa
4188         ;;
4189         74kc)
4190             disable mips32r6
4191             disable mips64r2
4192             disable mips64r6
4193             disable mipsfpu
4194             disable msa
4195         ;;
4196         74kf)
4197             disable mips32r6
4198             disable mips64r2
4199             disable mips64r6
4200             disable msa
4201         ;;
4202         p5600)
4203             disable mips32r6
4204             disable mips64r2
4205             disable mips64r6
4206             disable mipsdsp
4207             disable mipsdspr2
4208             check_cflags "-mtune=p5600" &&
4209             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4210             add_asflags "-mfp64"
4211         ;;
4212         i6400)
4213             disable mips32r2
4214             disable mips32r6
4215             disable mips64r2
4216             disable mipsdsp
4217             disable mipsdspr2
4218             check_cflags "-mtune=i6400 -mabi=64" &&
4219             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4220             check_ldflags "-mabi=64" &&
4221             add_asflags "-mfp64"
4222         ;;
4223         loongson*)
4224             disable mips32r2
4225             disable mips32r6
4226             disable mips64r2
4227             disable mips64r6
4228             disable mipsfpu
4229             disable mipsdsp
4230             disable mipsdspr2
4231             disable msa
4232             enable local_aligned_8 local_aligned_16 local_aligned_32
4233             enable simd_align_16
4234             enable fast_64bit
4235             enable fast_clz
4236             enable fast_cmov
4237             enable fast_unaligned
4238             disable aligned_stack
4239             case $cpu in
4240                 loongson3*)
4241                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4242                 ;;
4243                 loongson2e)
4244                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4245                 ;;
4246                 loongson2f)
4247                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4248                 ;;
4249             esac
4250         ;;
4251         generic)
4252             disable mips64r6
4253             disable msa
4254         ;;
4255         *)
4256             # Unknown CPU. Disable everything.
4257             warn "unknown CPU. Disabling all MIPS optimizations."
4258             disable mipsfpu
4259             disable mips32r2
4260             disable mips32r6
4261             disable mips64r2
4262             disable mips64r6
4263             disable mipsdsp
4264             disable mipsdspr2
4265             disable msa
4266         ;;
4267     esac
4268
4269 elif enabled ppc; then
4270
4271     disable ldbrx
4272
4273     case $(tolower $cpu) in
4274         601|ppc601|powerpc601)
4275             cpuflags="-mcpu=601"
4276             disable altivec
4277         ;;
4278         603*|ppc603*|powerpc603*)
4279             cpuflags="-mcpu=603"
4280             disable altivec
4281         ;;
4282         604*|ppc604*|powerpc604*)
4283             cpuflags="-mcpu=604"
4284             disable altivec
4285         ;;
4286         g3|75*|ppc75*|powerpc75*)
4287             cpuflags="-mcpu=750"
4288             disable altivec
4289         ;;
4290         g4|745*|ppc745*|powerpc745*)
4291             cpuflags="-mcpu=7450"
4292             disable vsx
4293         ;;
4294         74*|ppc74*|powerpc74*)
4295             cpuflags="-mcpu=7400"
4296             disable vsx
4297         ;;
4298         g5|970|ppc970|powerpc970)
4299             cpuflags="-mcpu=970"
4300             disable vsx
4301         ;;
4302         power[3-6]*)
4303             cpuflags="-mcpu=$cpu"
4304             disable vsx
4305         ;;
4306         power[7-8]*)
4307             cpuflags="-mcpu=$cpu"
4308         ;;
4309         cell)
4310             cpuflags="-mcpu=cell"
4311             enable ldbrx
4312             disable vsx
4313         ;;
4314         e500mc)
4315             cpuflags="-mcpu=e500mc"
4316             disable altivec
4317         ;;
4318         e500v2)
4319             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4320             disable altivec
4321             disable dcbzl
4322         ;;
4323         e500)
4324             cpuflags="-mcpu=8540 -mhard-float"
4325             disable altivec
4326             disable dcbzl
4327         ;;
4328     esac
4329
4330 elif enabled sparc; then
4331
4332     case $cpu in
4333         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4334             cpuflags="-mcpu=$cpu"
4335         ;;
4336         ultrasparc*|niagara[234])
4337             cpuflags="-mcpu=$cpu"
4338         ;;
4339     esac
4340
4341 elif enabled x86; then
4342
4343     case $cpu in
4344         i[345]86|pentium)
4345             cpuflags="-march=$cpu"
4346             disable i686
4347             disable mmx
4348         ;;
4349         # targets that do NOT support nopl and conditional mov (cmov)
4350         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4351             cpuflags="-march=$cpu"
4352             disable i686
4353         ;;
4354         # targets that do support nopl and conditional mov (cmov)
4355         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4356         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4357             cpuflags="-march=$cpu"
4358             enable i686
4359             enable fast_cmov
4360         ;;
4361         # targets that do support conditional mov but on which it's slow
4362         pentium4|pentium4m|prescott|nocona)
4363             cpuflags="-march=$cpu"
4364             enable i686
4365             disable fast_cmov
4366         ;;
4367     esac
4368
4369 fi
4370
4371 if [ "$cpu" != generic ]; then
4372     add_cflags  $cpuflags
4373     add_asflags $cpuflags
4374     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4375 fi
4376
4377 # compiler sanity check
4378 check_exec <<EOF
4379 int main(void){ return 0; }
4380 EOF
4381 if test "$?" != 0; then
4382     echo "$cc is unable to create an executable file."
4383     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4384         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4385         echo "Only do this if you know what cross compiling means."
4386     fi
4387     die "C compiler test failed."
4388 fi
4389
4390 add_cppflags -D_ISOC99_SOURCE
4391 add_cxxflags -D__STDC_CONSTANT_MACROS
4392 check_cflags -std=c99
4393 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4394 #include <stdlib.h>
4395 EOF
4396 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4397 #include <stdlib.h>
4398 EOF
4399
4400 add_host_cppflags -D_ISOC99_SOURCE
4401 check_host_cflags -std=c99
4402 check_host_cflags -Wall
4403 check_host_cflags -O3
4404
4405 check_64bit(){
4406     arch32=$1
4407     arch64=$2
4408     expr=$3
4409     check_code cc "" "int test[2*($expr) - 1]" &&
4410         subarch=$arch64 || subarch=$arch32
4411 }
4412
4413 case "$arch" in
4414     aarch64|alpha|ia64)
4415         spic=$shared
4416     ;;
4417     mips)
4418         check_64bit mips mips64 '_MIPS_SIM > 1'
4419         spic=$shared
4420     ;;
4421     parisc)
4422         check_64bit parisc parisc64 'sizeof(void *) > 4'
4423         spic=$shared
4424     ;;
4425     ppc)
4426         check_64bit ppc ppc64 'sizeof(void *) > 4'
4427         spic=$shared
4428     ;;
4429     s390)
4430         check_64bit s390 s390x 'sizeof(void *) > 4'
4431         spic=$shared
4432     ;;
4433     sparc)
4434         check_64bit sparc sparc64 'sizeof(void *) > 4'
4435         spic=$shared
4436     ;;
4437     x86)
4438         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4439         # Treat x32 as x64 for now. Note it also needs spic=$shared
4440         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4441             subarch=x86_64
4442         if test "$subarch" = "x86_64"; then
4443             spic=$shared
4444         fi
4445     ;;
4446     ppc)
4447         check_cc <<EOF && subarch="ppc64"
4448         int test[(int)sizeof(char*) - 7];
4449 EOF
4450     ;;
4451 esac
4452
4453 enable $subarch
4454 enabled spic && enable_weak pic
4455
4456 # OS specific
4457 case $target_os in
4458     aix)
4459         SHFLAGS=-shared
4460         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4461         enabled shared && add_ldflags -Wl,-brtl
4462         ;;
4463     android)
4464         disable symver
4465         enable section_data_rel_ro
4466         SLIB_INSTALL_NAME='$(SLIBNAME)'
4467         SLIB_INSTALL_LINKS=
4468         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4469         ;;
4470     haiku)
4471         prefix_default="/boot/common"
4472         network_extralibs="-lnetwork"
4473         host_libs=
4474         ;;
4475     sunos)
4476         SHFLAGS='-shared -Wl,-h,$$(@F)'
4477         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4478         network_extralibs="-lsocket -lnsl"
4479         add_cppflags -D__EXTENSIONS__
4480         # When using suncc to build, the Solaris linker will mark
4481         # an executable with each instruction set encountered by
4482         # the Solaris assembler.  As our libraries contain their own
4483         # guards for processor-specific code, instead suppress
4484         # generation of the HWCAPS ELF section on Solaris x86 only.
4485         enabled_all suncc x86 &&
4486             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4487             add_ldflags -Wl,-M,mapfile
4488         nm_default='nm -P -g'
4489         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4490         ;;
4491     netbsd)
4492         disable symver
4493         oss_indev_extralibs="-lossaudio"
4494         oss_outdev_extralibs="-lossaudio"
4495         enabled gcc || check_ldflags -Wl,-zmuldefs
4496         ;;
4497     openbsd|bitrig)
4498         disable symver
4499         SHFLAGS='-shared'
4500         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4501         SLIB_INSTALL_LINKS=
4502         oss_indev_extralibs="-lossaudio"
4503         oss_outdev_extralibs="-lossaudio"
4504         ;;
4505     dragonfly)
4506         disable symver
4507         ;;
4508     freebsd)
4509         ;;
4510     bsd/os)
4511         add_extralibs -lpoll -lgnugetopt
4512         strip="strip -d"
4513         ;;
4514     darwin)
4515         enabled ppc && add_asflags -force_cpusubtype_ALL
4516         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4517         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4518         strip="${strip} -x"
4519         add_ldflags -Wl,-dynamic,-search_paths_first
4520         SLIBSUF=".dylib"
4521         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4522         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4523         objformat="macho"
4524         enabled x86_64 && objformat="macho64"
4525         enabled_any pic shared x86_64 ||
4526             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4527         ;;
4528     msys*)
4529         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4530         ;;
4531     mingw32*|mingw64*)
4532         if test $target_os = "mingw32ce"; then
4533             disable network
4534         else
4535             target_os=mingw32
4536         fi
4537         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4538         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4539         LIBTARGET=i386
4540         if enabled x86_64; then
4541             LIBTARGET="i386:x86-64"
4542         elif enabled arm; then
4543             LIBTARGET=arm-wince
4544         fi
4545         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4546         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4547         shlibdir_default="$bindir_default"
4548         SLIBPREF=""
4549         SLIBSUF=".dll"
4550         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4551         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4552         dlltool="${cross_prefix}dlltool"
4553         if check_cmd lib.exe -list; then
4554             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4555             if enabled x86_64; then
4556                 LIBTARGET=x64
4557             fi
4558         elif check_cmd $dlltool --version; then
4559             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4560         fi
4561         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4562         SLIB_INSTALL_LINKS=
4563         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4564         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4565         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4566         objformat="win32"
4567         ranlib=:
4568         enable dos_paths
4569         check_ldflags -Wl,--nxcompat,--dynamicbase
4570         # Lets work around some stupidity in binutils.
4571         # ld will strip relocations from executables even though we need them
4572         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4573         # however ld then forgets what the entry point should be (oops) so we
4574         # have to manually (re)set it.
4575         if enabled x86_32; then
4576             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4577         elif enabled x86_64; then
4578             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4579             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4580             # Set image base >4GB for extra entropy with HEASLR
4581             add_ldexeflags -Wl,--image-base,0x140000000
4582             append SHFLAGS -Wl,--image-base,0x180000000
4583         fi
4584         ;;
4585     win32|win64)
4586         disable symver
4587         if enabled shared; then
4588             # Link to the import library instead of the normal static library
4589             # for shared libs.
4590             LD_LIB='%.lib'
4591             # Cannot build both shared and static libs with MSVC or icl.
4592             disable static
4593         fi
4594         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4595         shlibdir_default="$bindir_default"
4596         SLIBPREF=""
4597         SLIBSUF=".dll"
4598         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4599         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4600         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4601         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4602         SLIB_INSTALL_LINKS=
4603         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4604         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4605         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4606         objformat="win32"
4607         ranlib=:
4608         enable dos_paths
4609         ;;
4610     cygwin*)
4611         target_os=cygwin
4612         shlibdir_default="$bindir_default"
4613         SLIBPREF="cyg"
4614         SLIBSUF=".dll"
4615         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4616         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4617         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4618         SLIB_INSTALL_LINKS=
4619         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4620         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4621         objformat="win32"
4622         enable dos_paths
4623         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4624         ;;
4625     *-dos|freedos|opendos)
4626         network_extralibs="-lsocket"
4627         objformat="coff"
4628         enable dos_paths
4629         add_cppflags -U__STRICT_ANSI__
4630         ;;
4631     linux)
4632         enable dv1394
4633         enable section_data_rel_ro
4634         ;;
4635     irix*)
4636         target_os=irix
4637         ranlib="echo ignoring ranlib"
4638         ;;
4639     os/2*)
4640         strip="lxlite -CS"
4641         ln_s="cp -f"
4642         objformat="aout"
4643         add_cppflags -D_GNU_SOURCE
4644         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4645         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4646         LIBSUF="_s.a"
4647         SLIBPREF=""
4648         SLIBSUF=".dll"
4649         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4650         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4651         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4652             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4653             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4654             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4655             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4656         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4657             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4658         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4659         enable dos_paths
4660         enable_weak os2threads
4661         ;;
4662     gnu/kfreebsd)
4663         add_cppflags -D_BSD_SOURCE
4664         ;;
4665     gnu)
4666         ;;
4667     qnx)
4668         add_cppflags -D_QNX_SOURCE
4669         network_extralibs="-lsocket"
4670         ;;
4671     symbian)
4672         SLIBSUF=".dll"
4673         enable dos_paths
4674         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4675         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4676         add_ldflags -Wl,--target1-abs,--no-undefined \
4677                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4678                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4679         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4680                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4681                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4682         ;;
4683     osf1)
4684         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4685         ;;
4686     minix)
4687         ;;
4688     plan9)
4689         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4690                      -D_REENTRANT_SOURCE        \
4691                      -D_RESEARCH_SOURCE         \
4692                      -DFD_SETSIZE=96            \
4693                      -DHAVE_SOCK_OPTS
4694         add_compat strtod.o strtod=avpriv_strtod
4695         network_extralibs='-lbsd'
4696         exeobjs=compat/plan9/main.o
4697         disable ffserver
4698         cp_f='cp'
4699         ;;
4700     none)
4701         ;;
4702     *)
4703         die "Unknown OS '$target_os'."
4704         ;;
4705 esac
4706
4707 # test if creating links works
4708 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4709 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4710 mkdir "$link_dest"
4711 $ln_s "$link_dest" "$link_name"
4712 touch "$link_dest/test_file"
4713 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4714     # create link to source path
4715     [ -e src ] && rm src
4716     $ln_s "$source_path" src
4717     source_link=src
4718 else
4719     # creating directory links doesn't work
4720     # fall back to using the full source path
4721     source_link="$source_path"
4722 fi
4723 # cleanup
4724 rm -r "$link_dest"
4725 rm -r "$link_name"
4726
4727 # determine libc flavour
4728
4729 probe_libc(){
4730     pfx=$1
4731     pfx_no_=${pfx%_}
4732     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4733     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4734         eval ${pfx}libc_type=uclibc
4735         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4736     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4737         eval ${pfx}libc_type=glibc
4738         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4739     # MinGW headers can be installed on Cygwin, so check for newlib first.
4740     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4741         eval ${pfx}libc_type=newlib
4742         add_${pfx}cppflags -U__STRICT_ANSI__
4743     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4744     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4745         eval ${pfx}libc_type=mingw64
4746         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4747             add_compat msvcrt/snprintf.o
4748             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4749         fi
4750         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4751         eval test \$${pfx_no_}cc_type = "gcc" &&
4752             add_${pfx}cppflags -D__printf__=__gnu_printf__
4753     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4754          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4755         eval ${pfx}libc_type=mingw32
4756         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4757             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4758             die "ERROR: MinGW32 runtime version must be >= 3.15."
4759         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4760         eval test \$${pfx_no_}cc_type = "gcc" &&
4761             add_${pfx}cppflags -D__printf__=__gnu_printf__
4762     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4763         eval ${pfx}libc_type=msvcrt
4764         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4765             if [ "$pfx" = host_ ]; then
4766                 add_host_cppflags -Dsnprintf=_snprintf
4767             else
4768                 add_compat strtod.o strtod=avpriv_strtod
4769                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4770                                              _snprintf=avpriv_snprintf  \
4771                                              vsnprintf=avpriv_vsnprintf
4772             fi
4773         fi
4774         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4775         # 0x601 by default unless something else is set by the user.
4776         # This can easily lead to us detecting functions only present
4777         # in such new versions and producing binaries requiring windows 7.0.
4778         # Therefore explicitly set the default to XP unless the user has
4779         # set something else on the command line.
4780         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4781         # family. For these cases, configure is free to use any functions
4782         # found in the SDK headers by default. (Alternatively, we could force
4783         # _WIN32_WINNT to 0x0602 in that case.)
4784         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4785             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4786 #ifdef WINAPI_FAMILY
4787 #include <winapifamily.h>
4788 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4789 #error not desktop
4790 #endif
4791 #endif
4792 EOF
4793     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4794         eval ${pfx}libc_type=klibc
4795     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4796         eval ${pfx}libc_type=bionic
4797     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4798         eval ${pfx}libc_type=solaris
4799         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4800     fi
4801     check_${pfx}cc <<EOF
4802 #include <time.h>
4803 void *v = localtime_r;
4804 EOF
4805 test "$?" != 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
4806 #include <time.h>
4807 void *v = localtime_r;
4808 EOF
4809
4810 }
4811
4812 probe_libc
4813 test -n "$libc_type" && enable libc_$libc_type
4814 probe_libc host_
4815 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4816
4817 case $libc_type in
4818     bionic)
4819         add_compat strtod.o strtod=avpriv_strtod
4820         ;;
4821 esac
4822
4823 # hacks for compiler/libc/os combinations
4824
4825 if enabled_all tms470 libc_glibc; then
4826     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4827     add_cppflags -D__USER_LABEL_PREFIX__=
4828     add_cppflags -D__builtin_memset=memset
4829     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4830     add_cflags   -pds=48    # incompatible redefinition of macro
4831 fi
4832
4833 if enabled_all ccc libc_glibc; then
4834     add_ldflags -Wl,-z,now  # calls to libots crash without this
4835 fi
4836
4837 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4838     add_cppflags '-I\$(SRC_PATH)/compat/float'
4839
4840 esc(){
4841     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4842 }
4843
4844 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4845
4846 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4847
4848 set_default libdir
4849 : ${shlibdir_default:="$libdir"}
4850 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4851
4852 set_default $PATHS_LIST
4853 set_default nm
4854
4855 # we need to build at least one lib type
4856 if ! enabled_any static shared; then
4857     cat <<EOF
4858 At least one library type must be built.
4859 Specify --enable-static to build the static libraries or --enable-shared to
4860 build the shared libraries as well. To only build the shared libraries specify
4861 --disable-static in addition to --enable-shared.
4862 EOF
4863     exit 1;
4864 fi
4865
4866 die_license_disabled() {
4867     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4868 }
4869
4870 die_license_disabled_gpl() {
4871     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4872 }
4873
4874 die_license_disabled gpl frei0r
4875 die_license_disabled gpl libcdio
4876 die_license_disabled gpl librubberband
4877 die_license_disabled gpl libsmbclient
4878 die_license_disabled gpl libutvideo
4879 die_license_disabled gpl libvidstab
4880 die_license_disabled gpl libx264
4881 die_license_disabled gpl libx265
4882 die_license_disabled gpl libxavs
4883 die_license_disabled gpl libxvid
4884 die_license_disabled gpl x11grab
4885
4886 die_license_disabled nonfree libfaac
4887 die_license_disabled nonfree nvenc
4888 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4889 enabled gpl && die_license_disabled_gpl nonfree openssl
4890
4891 die_license_disabled version3 gmp
4892 die_license_disabled version3 libopencore_amrnb
4893 die_license_disabled version3 libopencore_amrwb
4894 die_license_disabled version3 libsmbclient
4895 die_license_disabled version3 libvo_amrwbenc
4896
4897 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4898
4899 disabled optimizations || check_cflags -fomit-frame-pointer
4900
4901 enable_weak_pic() {
4902     disabled pic && return
4903     enable pic
4904     add_cppflags -DPIC
4905     case "$target_os" in
4906     mingw*|cygwin*)
4907         ;;
4908     *)
4909         add_cflags -fPIC
4910         ;;
4911     esac
4912     add_asflags  -fPIC
4913 }
4914
4915 enabled pic && enable_weak_pic
4916
4917 check_cc <<EOF || die "Symbol mangling check failed."
4918 int ff_extern;
4919 EOF
4920 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4921 extern_prefix=${sym%%ff_extern*}
4922
4923 check_cc <<EOF && enable_weak inline_asm
4924 void foo(void) { __asm__ volatile ("" ::); }
4925 EOF
4926
4927 _restrict=
4928 for restrict_keyword in restrict __restrict__ __restrict; do
4929     check_cc <<EOF && _restrict=$restrict_keyword && break
4930 void foo(char * $restrict_keyword p);
4931 EOF
4932 done
4933
4934 check_cc <<EOF && enable pragma_deprecated
4935 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4936 EOF
4937
4938 check_cc <<EOF && enable attribute_packed
4939 struct { int x; } __attribute__((packed)) x;
4940 EOF
4941
4942 check_cc <<EOF && enable attribute_may_alias
4943 union { int x; } __attribute__((may_alias)) x;
4944 EOF
4945
4946 check_cc <<EOF || die "endian test failed"
4947 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4948 EOF
4949 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4950
4951 if ! enabled ppc64 || enabled bigendian; then
4952     disable vsx
4953 fi
4954
4955 check_gas() {
4956     log "check_gas using '$as' as AS"
4957     # :vararg is used on aarch64, arm and ppc altivec
4958     check_as <<EOF || return 1
4959 .macro m n, y:vararg=0
4960 \n: .int \y
4961 .endm
4962 m x
4963 EOF
4964     # .altmacro is only used in arm asm
4965     ! enabled arm || check_as <<EOF || return 1
4966 .altmacro
4967 EOF
4968     enable gnu_as
4969     return 0
4970 }
4971
4972 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4973     nogas=:
4974     enabled_any arm aarch64 && nogas=die
4975     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4976     as_noop=-v
4977
4978     case $as_type in
4979         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4980         gcc)  gaspp_as_type=gas ;;
4981         *)    gaspp_as_type=$as_type ;;
4982     esac
4983
4984     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4985
4986     test "${as#*gas-preprocessor.pl}" != "$as" ||
4987     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4988         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4989
4990     if ! check_gas ; then
4991         as=${gas:=$as}
4992         check_gas || \
4993             $nogas "GNU assembler not found, install/update gas-preprocessor"
4994     fi
4995
4996     check_as <<EOF && enable as_func
4997 .func test
4998 .endfunc
4999 EOF
5000 fi
5001
5002 check_inline_asm inline_asm_labels '"1:\n"'
5003
5004 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5005
5006 if enabled aarch64; then
5007     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5008     # internal assembler in clang 3.3 does not support this instruction
5009     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5010     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5011
5012     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5013
5014 elif enabled alpha; then
5015
5016     check_cflags -mieee
5017
5018 elif enabled arm; then
5019
5020     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5021
5022     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5023 float func(float a, float b){ return a+b; }
5024 EOF
5025
5026     enabled thumb && check_cflags -mthumb || check_cflags -marm
5027
5028     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5029         enable vfp_args
5030     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5031         enable vfp_args
5032     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5033         case "${cross_prefix:-$cc}" in
5034             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5035             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5036 __asm__ (".eabi_attribute 28, 1");
5037 int main(void) { return 0; }
5038 EOF
5039         esac
5040         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5041     fi
5042
5043     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5044     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5045     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5046     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5047     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5048     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5049     enabled setend  && check_insn setend  'setend be'
5050
5051     [ $target_os = linux ] || [ $target_os = android ] ||
5052         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5053             $ARCH_EXT_LIST_ARM
5054
5055     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5056
5057     check_as <<EOF && enable as_dn_directive
5058 ra .dn d0.i16
5059 .unreq ra
5060 EOF
5061
5062     # llvm's integrated assembler supports .object_arch from llvm 3.5
5063     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5064 .object_arch armv4
5065 EOF
5066
5067     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5068
5069 elif enabled mips; then
5070
5071     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5072     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5073     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5074
5075     # Enable minimum ISA based on selected options
5076     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5077         add_cflags "-mips64r2"
5078         add_asflags "-mips64r2"
5079     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5080         add_cflags "-mips64"
5081         add_asflags "-mips64"
5082     elif enabled mipsdsp || enabled mipsdspr2; then
5083         add_cflags "-mips32r2 -mfp32"
5084         add_asflags "-mips32r2 -mfp32"
5085     fi
5086
5087     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5088      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5089     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5090      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5091     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5092      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5093     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5094      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5095
5096     enabled msa && add_asflags "-mmsa"
5097
5098 elif enabled parisc; then
5099
5100     if enabled gcc; then
5101         case $($cc -dumpversion) in
5102             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5103         esac
5104     fi
5105
5106 elif enabled ppc; then
5107
5108     enable local_aligned_8 local_aligned_16 local_aligned_32
5109
5110     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5111     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5112     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5113     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5114
5115     # AltiVec flags: The FSF version of GCC differs from the Apple version
5116     if enabled altivec; then
5117         check_cflags -maltivec -mabi=altivec &&
5118         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5119         check_cflags -faltivec
5120
5121         # check if our compiler supports Motorola AltiVec C API
5122         check_cc <<EOF || disable altivec
5123 $inc_altivec_h
5124 int main(void) {
5125     vector signed int v1 = (vector signed int) { 0 };
5126     vector signed int v2 = (vector signed int) { 1 };
5127     v1 = vec_add(v1, v2);
5128     return 0;
5129 }
5130 EOF
5131
5132         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5133     fi
5134
5135     if enabled vsx; then
5136         check_cflags -mvsx &&
5137         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5138     fi
5139
5140     if enabled power8; then
5141         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5142     fi
5143
5144 elif enabled x86; then
5145
5146     check_builtin rdtsc    intrin.h   "__rdtsc()"
5147     check_builtin mm_empty mmintrin.h "_mm_empty()"
5148
5149     enable local_aligned_8 local_aligned_16 local_aligned_32
5150
5151     # check whether EBP is available on x86
5152     # As 'i' is stored on the stack, this program will crash
5153     # if the base pointer is used to access it because the
5154     # base pointer is cleared in the inline assembly code.
5155     check_exec_crash <<EOF && enable ebp_available
5156 volatile int i=0;
5157 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5158 return i;
5159 EOF
5160
5161     # check whether EBX is available on x86
5162     check_inline_asm ebx_available '""::"b"(0)' &&
5163         check_inline_asm ebx_available '"":::"%ebx"'
5164
5165     # check whether xmm clobbers are supported
5166     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5167
5168     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5169         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5170
5171     # check whether binutils is new enough to compile SSSE3/MMXEXT
5172     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5173     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5174
5175     if ! disabled_any asm mmx yasm; then
5176         if check_cmd $yasmexe --version; then
5177             enabled x86_64 && yasm_extra="-m amd64"
5178             yasm_debug="-g dwarf2"
5179         elif check_cmd nasm -v; then
5180             yasmexe=nasm
5181             yasm_debug="-g -F dwarf"
5182             if enabled x86_64; then
5183                 case "$objformat" in
5184                     elf)   objformat=elf64 ;;
5185                     win32) objformat=win64 ;;
5186                 esac
5187             fi
5188         fi
5189
5190         YASMFLAGS="-f $objformat $yasm_extra"
5191         enabled pic               && append YASMFLAGS "-DPIC"
5192         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5193         case "$objformat" in
5194             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5195         esac
5196
5197         check_yasm "movbe ecx, [5]" && enable yasm ||
5198             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5199         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5200         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5201         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5202         check_yasm "CPU amdnop" || disable cpunop
5203     fi
5204
5205     case "$cpu" in
5206         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5207             disable fast_clz
5208         ;;
5209     esac
5210
5211 fi
5212
5213 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5214
5215 check_ldflags -Wl,--as-needed
5216 check_ldflags -Wl,-z,noexecstack
5217
5218 if check_func dlopen; then
5219     ldl=
5220 elif check_func dlopen -ldl; then
5221     ldl=-ldl
5222 fi
5223
5224 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5225 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5226 frei0r_filter_extralibs='$ldl'
5227 frei0r_src_filter_extralibs='$ldl'
5228 ladspa_filter_extralibs='$ldl'
5229 nvenc_encoder_extralibs='$ldl'
5230
5231 if ! disabled network; then
5232     check_func getaddrinfo $network_extralibs
5233     check_func inet_aton $network_extralibs
5234
5235     check_type netdb.h "struct addrinfo"
5236     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5237     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5238     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5239     check_type poll.h "struct pollfd"
5240     check_type netinet/sctp.h "struct sctp_event_subscribe"
5241     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5242     check_type netinet/in.h "struct sockaddr_in6"
5243     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5244     check_type "sys/types.h sys/socket.h" socklen_t
5245
5246     # Prefer arpa/inet.h over winsock2
5247     if check_header arpa/inet.h ; then
5248         check_func closesocket
5249     elif check_header winsock2.h ; then
5250         check_func_headers winsock2.h closesocket -lws2 &&
5251             network_extralibs="-lws2" ||
5252         { check_func_headers winsock2.h closesocket -lws2_32 &&
5253             network_extralibs="-lws2_32"; } || disable winsock2_h network
5254         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5255
5256         check_type ws2tcpip.h socklen_t
5257         check_type ws2tcpip.h "struct addrinfo"
5258         check_type ws2tcpip.h "struct group_source_req"
5259         check_type ws2tcpip.h "struct ip_mreq_source"
5260         check_type ws2tcpip.h "struct ipv6_mreq"
5261         check_type winsock2.h "struct pollfd"
5262         check_struct winsock2.h "struct sockaddr" sa_len
5263         check_type ws2tcpip.h "struct sockaddr_in6"
5264         check_type ws2tcpip.h "struct sockaddr_storage"
5265     else
5266         disable network
5267     fi
5268 fi
5269
5270 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5271 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5272 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5273 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5274 check_builtin sarestart signal.h "SA_RESTART"
5275 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5276 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5277 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5278 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5279
5280 case "$custom_allocator" in
5281     jemalloc)
5282         # jemalloc by default does not use a prefix
5283         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5284     ;;
5285     tcmalloc)
5286         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5287         malloc_prefix=tc_
5288     ;;
5289 esac
5290
5291 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5292 check_func  ${malloc_prefix}memalign            && enable memalign
5293 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5294
5295 check_func  access
5296 check_func  arc4random
5297 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5298 check_func  fcntl
5299 check_func  fork
5300 check_func  gethrtime
5301 check_func  getopt
5302 check_func  getrusage
5303 check_func  gettimeofday
5304 check_func  isatty
5305 check_func  mach_absolute_time
5306 check_func  mkstemp
5307 check_func  mmap
5308 check_func  mprotect
5309 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5310 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5311 check_func  sched_getaffinity
5312 check_func  setrlimit
5313 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5314 check_func  strerror_r
5315 check_func  sysconf
5316 check_func  sysctl
5317 check_func  usleep
5318
5319 check_func_headers conio.h kbhit
5320 check_func_headers io.h setmode
5321 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5322 check_func_headers stdlib.h getenv
5323 check_func_headers sys/stat.h lstat
5324
5325 check_func_headers windows.h CoTaskMemFree -lole32
5326 check_func_headers windows.h GetProcessAffinityMask
5327 check_func_headers windows.h GetProcessTimes
5328 check_func_headers windows.h GetSystemTimeAsFileTime
5329 check_func_headers windows.h MapViewOfFile
5330 check_func_headers windows.h PeekNamedPipe
5331 check_func_headers windows.h SetConsoleTextAttribute
5332 check_func_headers windows.h SetConsoleCtrlHandler
5333 check_func_headers windows.h Sleep
5334 check_func_headers windows.h VirtualAlloc
5335 check_struct windows.h "CONDITION_VARIABLE" Ptr
5336 check_func_headers glob.h glob
5337 enabled xlib &&
5338     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5339
5340 check_header dispatch/dispatch.h
5341 check_header direct.h
5342 check_header dirent.h
5343 check_header dlfcn.h
5344 check_header d3d11.h
5345 check_header dxva.h
5346 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5347 check_header io.h
5348 check_header libcrystalhd/libcrystalhd_if.h
5349 check_header mach/mach_time.h
5350 check_header malloc.h
5351 check_header net/udplite.h
5352 check_header poll.h
5353 check_header sys/mman.h
5354 check_header sys/param.h
5355 check_header sys/resource.h
5356 check_header sys/select.h
5357 check_header sys/time.h
5358 check_header sys/un.h
5359 check_header termios.h
5360 check_header unistd.h
5361 check_header valgrind/valgrind.h
5362 check_header vdpau/vdpau.h
5363 check_header vdpau/vdpau_x11.h
5364 check_header VideoDecodeAcceleration/VDADecoder.h
5365 check_header VideoToolbox/VideoToolbox.h
5366 check_header windows.h
5367 check_header X11/extensions/XvMClib.h
5368 check_header asm/types.h
5369
5370 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5371 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5372 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5373 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5374
5375 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5376
5377 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5378 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5379 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5380 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5381 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5382
5383 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5384 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5385
5386 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5387
5388 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5389
5390 if ! disabled w32threads && ! enabled pthreads; then
5391     check_func_headers "windows.h process.h" _beginthreadex &&
5392         enable w32threads || disable w32threads
5393     if ! enabled w32threads && enabled winrt; then
5394         check_func_headers "windows.h" CreateThread &&
5395             enable w32threads || disable w32threads
5396     fi
5397 fi
5398
5399 # check for some common methods of building with pthread support
5400 # do this before the optional library checks as some of them require pthreads
5401 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5402     enable pthreads
5403     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5404         add_cflags -pthread
5405         add_extralibs -pthread
5406     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5407         add_cflags -pthreads
5408         add_extralibs -pthreads
5409     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5410         add_cflags -ldl -pthread
5411         add_extralibs -ldl -pthread
5412     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5413         add_extralibs -lpthreadGC2
5414     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5415         :
5416     elif ! check_func pthread_join && ! check_func pthread_create; then
5417         disable pthreads
5418     fi
5419     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5420 fi
5421
5422
5423 if enabled pthreads; then
5424   check_func pthread_cancel
5425 fi
5426
5427 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5428 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5429 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5430
5431 check_lib math.h sin -lm && LIBM="-lm"
5432 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5433
5434 atan2f_args=2
5435 copysign_args=2
5436 hypot_args=2
5437 ldexpf_args=2
5438 powf_args=2
5439
5440 for func in $MATH_FUNCS; do
5441     eval check_mathfunc $func \${${func}_args:-1}
5442 done
5443
5444 for func in $COMPLEX_FUNCS; do
5445     eval check_complexfunc $func \${${func}_args:-1}
5446 done
5447
5448 # these are off by default, so fail if requested and not available
5449 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5450 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5451                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5452 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5453                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5454                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5455 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5456 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5457 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5458 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5459 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5460 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5461 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5462 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5463 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5464 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5465 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5466                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5467                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5468 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5469 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5470 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5471 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5472                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5473                                  warn "using libfdk without pkg-config"; } }
5474 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"
5475 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5476 enabled fontconfig        && enable libfontconfig
5477 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5478 enabled libfreetype       && require_libfreetype
5479 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5480 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5481 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5482                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5483                                done || die "ERROR: libgsm not found"; }
5484 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5485 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5486 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5487 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5488 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5489 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5490 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5491 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5492 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5493                                require_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5494                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5495 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5496 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5497                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5498                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5499                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5500                                die "ERROR: libopenjpeg not found"; }
5501 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5502 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5503 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5504 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5505 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5506 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5507 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5508                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5509 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5510 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5511 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5512 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5513 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5514 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5515 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5516                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5517                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5518 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5519 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5520 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5521 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5522 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5523
5524 enabled libvpx            && {
5525     enabled libvpx_vp8_decoder && {
5526         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5527             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5528                 die "ERROR: libvpx decoder version must be >=0.9.1";
5529     }
5530     enabled libvpx_vp8_encoder && {
5531         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5532             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5533                 die "ERROR: libvpx encoder version must be >=0.9.7";
5534     }
5535     enabled libvpx_vp9_decoder && {
5536         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5537             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5538                 disable libvpx_vp9_decoder;
5539     }
5540     enabled libvpx_vp9_encoder && {
5541         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5542             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5543                 disable libvpx_vp9_encoder;
5544     }
5545     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5546         die "libvpx enabled but no supported decoders found"
5547     fi
5548 }
5549
5550 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5551 enabled libwebp           && {
5552     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5553     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5554 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5555                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5556                                  warn "using libx264 without pkg-config"; } } &&
5557                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5558                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5559                              { check_cpp_condition x264.h "X264_MPEG2" &&
5560                                enable libx262; }
5561 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5562                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5563                                die "ERROR: libx265 version must be >= 68."; }
5564 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5565 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5566 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5567 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5568 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5569                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5570                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5571 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5572                                 { ! enabled cross_compile && {
5573                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5574                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5575                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5576                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5577                                die "ERROR: mmal not found"; }
5578 enabled mmal &&
5579     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5580      die "ERROR: mmal firmware headers too old")
5581
5582 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5583 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5584                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5585                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5586                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5587 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5588                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5589                                die "ERROR: openal not found"; } &&
5590                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5591                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5592 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5593                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5594                                die "ERROR: opencl not found"; } &&
5595                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5596                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5597                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5598 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5599                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5600                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5601                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5602                                die "ERROR: opengl not found."
5603                              }
5604 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5605                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5606                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5607                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5608                                die "ERROR: openssl not found"; }
5609 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5610
5611 # libdc1394 check
5612 if enabled libdc1394; then
5613     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5614         enable libdc1394_2; } ||
5615     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5616         enable libdc1394_1; } ||
5617     die "ERROR: No version of libdc1394 found "
5618 fi
5619
5620 if enabled gcrypt; then
5621     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5622     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5623         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5624         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5625         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5626             die "ERROR: gcrypt not found"
5627         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5628     else
5629         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5630     fi
5631 fi
5632
5633 if ! disabled sdl; then
5634     SDL_CONFIG="${cross_prefix}sdl-config"
5635     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5636         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5637         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5638         enable sdl
5639     else
5640         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5641             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5642             sdl_libs=$("${SDL_CONFIG}" --libs)
5643             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5644             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5645             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5646             enable sdl
5647         elif enabled sdl ; then
5648             die "ERROR: SDL not found"
5649         else
5650             disable sdl
5651         fi
5652     fi
5653     if test $target_os = "mingw32"; then
5654         sdl_libs="$sdl_libs -mconsole"
5655     fi
5656 fi
5657 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5658
5659 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5660     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5661     enable securetransport; }
5662
5663 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5664                        enable schannel && add_extralibs -lSecur32; }
5665
5666 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5667 enabled makeinfo \
5668     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5669     && enable makeinfo_html || disable makeinfo_html
5670 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5671 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5672 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5673 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5674
5675 check_header linux/fb.h
5676 check_header linux/videodev.h
5677 check_header linux/videodev2.h
5678 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5679
5680 check_header sys/videoio.h
5681 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5682
5683 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5684 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5685 # w32api 3.12 had it defined wrong
5686 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5687
5688 check_type "dshow.h" IBaseFilter
5689
5690 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5691 { check_header dev/bktr/ioctl_meteor.h &&
5692   check_header dev/bktr/ioctl_bt848.h; } ||
5693 { check_header machine/ioctl_meteor.h &&
5694   check_header machine/ioctl_bt848.h; } ||
5695 { check_header dev/video/meteor/ioctl_meteor.h &&
5696   check_header dev/video/bktr/ioctl_bt848.h; } ||
5697 check_header dev/ic/bt8xx.h
5698
5699 check_header sndio.h
5700 if check_struct sys/soundcard.h audio_buf_info bytes; then
5701     enable_safe sys/soundcard.h
5702 else
5703     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5704     #include <sys/soundcard.h>
5705     audio_buf_info abc;
5706 EOF
5707 fi
5708 check_header soundcard.h
5709
5710 enabled_any alsa_indev alsa_outdev &&
5711     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5712
5713 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5714     check_func jack_port_get_latency_range -ljack
5715
5716 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5717
5718 if enabled libcdio; then
5719     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5720     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5721     die "ERROR: No usable libcdio/cdparanoia found"
5722 fi
5723
5724 enabled xlib &&
5725     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5726
5727 if ! disabled libxcb; then
5728     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5729         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5730     } && disable x11grab && enable libxcb
5731
5732 if enabled libxcb; then
5733     disabled libxcb_shm || {
5734         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5735             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5736         } && check_header sys/shm.h && enable libxcb_shm; }
5737
5738     disabled libxcb_xfixes || {
5739         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5740             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5741         } && enable libxcb_xfixes; }
5742
5743     disabled libxcb_shape || {
5744         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5745             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5746         } && enable libxcb_shape; }
5747
5748     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5749     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5750 fi
5751 fi
5752
5753 if enabled x11grab; then
5754     enabled xlib || die "ERROR: Xlib not found"
5755     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5756     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5757 fi
5758
5759 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5760
5761 enabled dxva2api_h &&
5762     check_cc <<EOF && enable dxva2api_cobj
5763 #define _WIN32_WINNT 0x0600
5764 #define COBJMACROS
5765 #include <windows.h>
5766 #include <d3d9.h>
5767 #include <dxva2api.h>
5768 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5769 EOF
5770
5771 enabled vaapi &&
5772     check_lib va/va.h vaInitialize -lva ||
5773     disable vaapi
5774
5775 enabled vaapi && enabled xlib &&
5776     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5777     enable vaapi_x11
5778
5779 enabled vdpau &&
5780     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5781     disable vdpau
5782
5783 enabled vdpau && enabled xlib &&
5784     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5785     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5786     enable vdpau_x11
5787
5788 # Funny iconv installations are not unusual, so check it after all flags have been set
5789 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5790
5791 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5792
5793 # add some useful compiler flags if supported
5794 check_cflags -Wdeclaration-after-statement
5795 check_cflags -Wall
5796 check_cflags -Wdisabled-optimization
5797 check_cflags -Wpointer-arith
5798 check_cflags -Wredundant-decls
5799 check_cflags -Wwrite-strings
5800 check_cflags -Wtype-limits
5801 check_cflags -Wundef
5802 check_cflags -Wmissing-prototypes
5803 check_cflags -Wno-pointer-to-int-cast
5804 check_cflags -Wstrict-prototypes
5805 check_cflags -Wempty-body
5806 enabled extra_warnings && check_cflags -Winline
5807 enabled extra_warnings && check_cflags -Wcast-qual
5808
5809 check_disable_warning(){
5810     warning_flag=-W${1#-Wno-}
5811     test_cflags $warning_flag && add_cflags $1
5812 }
5813
5814 check_disable_warning -Wno-parentheses
5815 check_disable_warning -Wno-switch
5816 check_disable_warning -Wno-format-zero-length
5817 check_disable_warning -Wno-pointer-sign
5818 check_disable_warning -Wno-unused-const-variable
5819
5820 # add some linker flags
5821 check_ldflags -Wl,--warn-common
5822 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5823 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5824 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5825 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5826
5827 # add some strip flags
5828 # -wN '..@*' is more selective than -x, but not available everywhere.
5829 check_stripflags -wN \'..@*\' || check_stripflags -x
5830
5831 enabled neon_clobber_test &&
5832     check_ldflags -Wl,--wrap,avcodec_open2              \
5833                   -Wl,--wrap,avcodec_decode_audio4      \
5834                   -Wl,--wrap,avcodec_decode_video2      \
5835                   -Wl,--wrap,avcodec_decode_subtitle2   \
5836                   -Wl,--wrap,avcodec_encode_audio2      \
5837                   -Wl,--wrap,avcodec_encode_video2      \
5838                   -Wl,--wrap,avcodec_encode_subtitle    \
5839                   -Wl,--wrap,swr_convert                \
5840                   -Wl,--wrap,avresample_convert ||
5841     disable neon_clobber_test
5842
5843 enabled xmm_clobber_test &&
5844     check_ldflags -Wl,--wrap,avcodec_open2              \
5845                   -Wl,--wrap,avcodec_decode_audio4      \
5846                   -Wl,--wrap,avcodec_decode_video2      \
5847                   -Wl,--wrap,avcodec_decode_subtitle2   \
5848                   -Wl,--wrap,avcodec_encode_audio2      \
5849                   -Wl,--wrap,avcodec_encode_video2      \
5850                   -Wl,--wrap,avcodec_encode_subtitle    \
5851                   -Wl,--wrap,swr_convert                \
5852                   -Wl,--wrap,avresample_convert         \
5853                   -Wl,--wrap,sws_scale ||
5854     disable xmm_clobber_test
5855
5856 echo "X { local: *; };" > $TMPV
5857 if test_ldflags -Wl,--version-script,$TMPV; then
5858     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5859 elif test_ldflags -Wl,-M,$TMPV; then
5860     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5861 fi
5862
5863 check_cc <<EOF && enable symver_asm_label
5864 void ff_foo(void) __asm__ ("av_foo@VERSION");
5865 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5866 EOF
5867     check_cc <<EOF && enable symver_gnu_asm
5868 __asm__(".symver ff_foo,av_foo@VERSION");
5869 void ff_foo(void) {}
5870 EOF
5871
5872 if [ -z "$optflags" ]; then
5873     if enabled small; then
5874         optflags=$cflags_size
5875     elif enabled optimizations; then
5876         optflags=$cflags_speed
5877     else
5878         optflags=$cflags_noopt
5879     fi
5880 fi
5881
5882 check_optflags(){
5883     check_cflags "$@"
5884     enabled lto && check_ldflags "$@"
5885 }
5886
5887
5888 if enabled lto; then
5889     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5890     check_cflags  -flto
5891     check_ldflags -flto $cpuflags
5892     disable inline_asm_direct_symbol_refs
5893 fi
5894
5895 check_optflags $optflags
5896 check_optflags -fno-math-errno
5897 check_optflags -fno-signed-zeros
5898
5899 enabled ftrapv && check_cflags -ftrapv
5900
5901 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5902 int x;
5903 EOF
5904
5905
5906 if enabled icc; then
5907     # Just warnings, no remarks
5908     check_cflags -w1
5909     # -wd: Disable following warnings
5910     # 144, 167, 556: -Wno-pointer-sign
5911     # 188: enumerated type mixed with another type
5912     # 1292: attribute "foo" ignored
5913     # 1419: external declaration in primary source file
5914     # 10006: ignoring unknown option -fno-signed-zeros
5915     # 10148: ignoring unknown option -Wno-parentheses
5916     # 10156: ignoring option '-W'; no argument required
5917     # 13200: No EMMS instruction before call to function
5918     # 13203: No EMMS instruction before return from function
5919     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5920     # 11030: Warning unknown option --as-needed
5921     # 10156: ignoring option '-export'; no argument required
5922     check_ldflags -wd10156,11030
5923     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5924     enable ebp_available
5925     # The test above does not test linking
5926     enabled lto && disable symver_asm_label
5927     if enabled x86_32; then
5928         icc_version=$($cc -dumpversion)
5929         test ${icc_version%%.*} -ge 11 &&
5930             check_cflags -falign-stack=maintain-16-byte ||
5931             disable aligned_stack
5932     fi
5933 elif enabled ccc; then
5934     # disable some annoying warnings
5935     add_cflags -msg_disable bitnotint
5936     add_cflags -msg_disable mixfuncvoid
5937     add_cflags -msg_disable nonstandcast
5938     add_cflags -msg_disable unsupieee
5939 elif enabled gcc; then
5940     case $gcc_basever in
5941         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
5942         4.*)                 check_optflags -fno-tree-vectorize ;;
5943         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
5944     esac
5945     check_cflags -Werror=format-security
5946     check_cflags -Werror=implicit-function-declaration
5947     check_cflags -Werror=missing-prototypes
5948     check_cflags -Werror=return-type
5949     check_cflags -Werror=vla
5950     check_cflags -Wformat
5951     check_cflags -fdiagnostics-color=auto
5952     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5953 elif enabled llvm_gcc; then
5954     check_cflags -mllvm -stack-alignment=16
5955 elif enabled clang; then
5956     check_cflags -mllvm -stack-alignment=16
5957     check_cflags -Qunused-arguments
5958     check_cflags -Werror=implicit-function-declaration
5959     check_cflags -Werror=missing-prototypes
5960     check_cflags -Werror=return-type
5961 elif enabled cparser; then
5962     add_cflags -Wno-missing-variable-declarations
5963     add_cflags -Wno-empty-statement
5964 elif enabled armcc; then
5965     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5966     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5967     # 2523: use of inline assembly is deprecated
5968     add_cflags -W${armcc_opt},--diag_suppress=2523
5969     add_cflags -W${armcc_opt},--diag_suppress=1207
5970     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5971     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5972     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5973     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5974 elif enabled tms470; then
5975     add_cflags -pds=824 -pds=837
5976     disable inline_asm
5977 elif enabled pathscale; then
5978     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5979 elif enabled_any msvc icl; then
5980     enabled x86_32 && disable aligned_stack
5981     enabled_all x86_32 debug && add_cflags -Oy-
5982     enabled debug && add_ldflags -debug
5983     enable pragma_deprecated
5984     if enabled icl; then
5985         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5986         # (correctly) on icl 13.x.
5987         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5988             add_cflags -Qansi-alias
5989         # Some inline asm is not compilable in debug
5990         if enabled debug; then
5991             disable ebp_available
5992             disable ebx_available
5993         fi
5994     fi
5995     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5996     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5997     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5998     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5999     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6000     # MSVC 2013 and newer can handle it fine.
6001     # If this declspec fails, force including stdlib.h before the restrict redefinition
6002     # happens in config.h.
6003     if [ $_restrict != restrict ]; then
6004         check_cc <<EOF || add_cflags -FIstdlib.h
6005 __declspec($_restrict) void* foo(int);
6006 EOF
6007     fi
6008     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6009 fi
6010
6011 for pfx in "" host_; do
6012     varname=${pfx%_}cc_type
6013     eval "type=\$$varname"
6014     if [ $type = "msvc" ]; then
6015         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6016 static inline int foo(int a) { return a; }
6017 EOF
6018     fi
6019 done
6020
6021 case $as_type in
6022     clang)
6023         add_asflags -Qunused-arguments
6024     ;;
6025 esac
6026
6027 case $ld_type in
6028     clang)
6029         check_ldflags -Qunused-arguments
6030     ;;
6031 esac
6032
6033 case $target_os in
6034     osf1)
6035         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6036     ;;
6037     plan9)
6038         add_cppflags -Dmain=plan9_main
6039     ;;
6040 esac
6041
6042 enable frame_thread_encoder
6043
6044 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6045
6046 check_deps $CONFIG_LIST       \
6047            $CONFIG_EXTRA      \
6048            $HAVE_LIST         \
6049            $ALL_COMPONENTS    \
6050
6051 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"
6052
6053
6054 if test $target_os = "haiku"; then
6055     disable memalign
6056     disable posix_memalign
6057 fi
6058
6059 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6060     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6061     enable dxva2_lib
6062
6063 ! enabled_any memalign posix_memalign aligned_malloc &&
6064     enabled simd_align_16 && enable memalign_hack
6065
6066 # add_dep lib dep
6067 # -> enable ${lib}_deps_${dep}
6068 # -> add $dep to ${lib}_deps only once
6069 add_dep() {
6070     lib=$1
6071     dep=$2
6072     enabled "${lib}_deps_${dep}" && return 0
6073     enable  "${lib}_deps_${dep}"
6074     prepend "${lib}_deps" $dep
6075 }
6076
6077 # merge deps lib components
6078 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6079 merge_deps() {
6080     lib=$1
6081     shift
6082     for comp in $*; do
6083         enabled $comp || continue
6084         eval "dep=\"\$${comp}_deps\""
6085         for d in $dep; do
6086             add_dep $lib $d
6087         done
6088     done
6089 }
6090
6091 merge_deps libavfilter $FILTER_LIST
6092
6093 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6094
6095 for thread in $THREADS_LIST; do
6096     if enabled $thread; then
6097         test -n "$thread_type" &&
6098             die "ERROR: Only one thread type must be selected." ||
6099             thread_type="$thread"
6100     fi
6101 done
6102
6103 enabled zlib && add_cppflags -DZLIB_CONST
6104
6105 # conditional library dependencies, in linking order
6106 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6107 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6108 enabled aresample_filter    && prepend avfilter_deps "swresample"
6109 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6110 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6111 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6112 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6113 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6114 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6115 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6116 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6117 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6118 enabled pan_filter          && prepend avfilter_deps "swresample"
6119 enabled pp_filter           && prepend avfilter_deps "postproc"
6120 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6121 enabled resample_filter && prepend avfilter_deps "avresample"
6122 enabled sab_filter          && prepend avfilter_deps "swscale"
6123 enabled scale_filter    && prepend avfilter_deps "swscale"
6124 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6125 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6126 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6127 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6128 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6129 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6130 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6131 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6132 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6133
6134 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6135
6136 enabled opus_decoder    && prepend avcodec_deps "swresample"
6137
6138 expand_deps(){
6139     lib_deps=${1}_deps
6140     eval "deps=\$$lib_deps"
6141     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6142     unique $lib_deps
6143 }
6144
6145 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6146 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6147
6148 map 'expand_deps $v' $LIBRARY_LIST
6149
6150 echo "install prefix            $prefix"
6151 echo "source path               $source_path"
6152 echo "C compiler                $cc"
6153 echo "C library                 $libc_type"
6154 if test "$host_cc" != "$cc"; then
6155     echo "host C compiler           $host_cc"
6156     echo "host C library            $host_libc_type"
6157 fi
6158 echo "ARCH                      $arch ($cpu)"
6159 if test "$build_suffix" != ""; then
6160     echo "build suffix              $build_suffix"
6161 fi
6162 if test "$progs_suffix" != ""; then
6163     echo "progs suffix              $progs_suffix"
6164 fi
6165 if test "$extra_version" != ""; then
6166     echo "version string suffix     $extra_version"
6167 fi
6168 echo "big-endian                ${bigendian-no}"
6169 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6170 if enabled x86; then
6171     echo "${yasmexe}                      ${yasm-no}"
6172     echo "MMX enabled               ${mmx-no}"
6173     echo "MMXEXT enabled            ${mmxext-no}"
6174     echo "3DNow! enabled            ${amd3dnow-no}"
6175     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6176     echo "SSE enabled               ${sse-no}"
6177     echo "SSSE3 enabled             ${ssse3-no}"
6178     echo "AESNI enabled             ${aesni-no}"
6179     echo "AVX enabled               ${avx-no}"
6180     echo "XOP enabled               ${xop-no}"
6181     echo "FMA3 enabled              ${fma3-no}"
6182     echo "FMA4 enabled              ${fma4-no}"
6183     echo "i686 features enabled     ${i686-no}"
6184     echo "CMOV is fast              ${fast_cmov-no}"
6185     echo "EBX available             ${ebx_available-no}"
6186     echo "EBP available             ${ebp_available-no}"
6187 fi
6188 if enabled aarch64; then
6189     echo "NEON enabled              ${neon-no}"
6190     echo "VFP enabled               ${vfp-no}"
6191 fi
6192 if enabled arm; then
6193     echo "ARMv5TE enabled           ${armv5te-no}"
6194     echo "ARMv6 enabled             ${armv6-no}"
6195     echo "ARMv6T2 enabled           ${armv6t2-no}"
6196     echo "VFP enabled               ${vfp-no}"
6197     echo "NEON enabled              ${neon-no}"
6198     echo "THUMB enabled             ${thumb-no}"
6199 fi
6200 if enabled mips; then
6201     echo "MIPS FPU enabled          ${mipsfpu-no}"
6202     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6203     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6204     echo "MIPS MSA enabled          ${msa-no}"
6205     echo "LOONGSON MMI enabled      ${mmi-no}"
6206 fi
6207 if enabled ppc; then
6208     echo "AltiVec enabled           ${altivec-no}"
6209     echo "VSX enabled               ${vsx-no}"
6210     echo "POWER8 enabled            ${power8-no}"
6211     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6212     echo "dcbzl available           ${dcbzl-no}"
6213 fi
6214 echo "debug symbols             ${debug-no}"
6215 echo "strip symbols             ${stripping-no}"
6216 echo "optimize for size         ${small-no}"
6217 echo "optimizations             ${optimizations-no}"
6218 echo "static                    ${static-no}"
6219 echo "shared                    ${shared-no}"
6220 echo "postprocessing support    ${postproc-no}"
6221 echo "new filter support        ${avfilter-no}"
6222 echo "network support           ${network-no}"
6223 echo "threading support         ${thread_type-no}"
6224 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6225 echo "SDL support               ${sdl-no}"
6226 echo "opencl enabled            ${opencl-no}"
6227 echo "texi2html enabled         ${texi2html-no}"
6228 echo "perl enabled              ${perl-no}"
6229 echo "pod2man enabled           ${pod2man-no}"
6230 echo "makeinfo enabled          ${makeinfo-no}"
6231 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6232 test -n "$random_seed" &&
6233     echo "random seed               ${random_seed}"
6234 echo
6235
6236 echo "Enabled programs:"
6237 print_enabled '' $PROGRAM_LIST | print_in_columns
6238 echo
6239
6240 echo "External libraries:"
6241 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6242 echo
6243
6244 echo "Libraries:"
6245 print_enabled '' $LIBRARY_LIST | print_in_columns
6246 echo
6247
6248 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6249     echo "Enabled ${type}s:"
6250     eval list=\$$(toupper $type)_LIST
6251     print_enabled '_*' $list | print_in_columns
6252     echo
6253 done
6254
6255 license="LGPL version 2.1 or later"
6256 if enabled nonfree; then
6257     license="nonfree and unredistributable"
6258 elif enabled gplv3; then
6259     license="GPL version 3 or later"
6260 elif enabled lgplv3; then
6261     license="LGPL version 3 or later"
6262 elif enabled gpl; then
6263     license="GPL version 2 or later"
6264 fi
6265
6266 echo "License: $license"
6267
6268 echo "Creating config.mak, config.h, and doc/config.texi..."
6269
6270 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6271
6272 enabled stripping || strip="echo skipping strip"
6273
6274 config_files="$TMPH config.mak doc/config.texi"
6275
6276 cat > config.mak <<EOF
6277 # Automatically generated by configure - do not modify!
6278 ifndef FFMPEG_CONFIG_MAK
6279 FFMPEG_CONFIG_MAK=1
6280 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6281 prefix=$prefix
6282 LIBDIR=\$(DESTDIR)$libdir
6283 SHLIBDIR=\$(DESTDIR)$shlibdir
6284 INCDIR=\$(DESTDIR)$incdir
6285 BINDIR=\$(DESTDIR)$bindir
6286 DATADIR=\$(DESTDIR)$datadir
6287 DOCDIR=\$(DESTDIR)$docdir
6288 MANDIR=\$(DESTDIR)$mandir
6289 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6290 SRC_PATH=$source_path
6291 SRC_LINK=$source_link
6292 ifndef MAIN_MAKEFILE
6293 SRC_PATH:=\$(SRC_PATH:.%=..%)
6294 endif
6295 CC_IDENT=$cc_ident
6296 ARCH=$arch
6297 INTRINSICS=$intrinsics
6298 CC=$cc
6299 CXX=$cxx
6300 AS=$as
6301 OBJCC=$objcc
6302 LD=$ld
6303 DEPCC=$dep_cc
6304 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6305 DEPAS=$as
6306 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6307 YASM=$yasmexe
6308 DEPYASM=$yasmexe
6309 AR=$ar
6310 ARFLAGS=$arflags
6311 AR_O=$ar_o
6312 RANLIB=$ranlib
6313 STRIP=$strip
6314 CP=cp -p
6315 LN_S=$ln_s
6316 CPPFLAGS=$CPPFLAGS
6317 CFLAGS=$CFLAGS
6318 CXXFLAGS=$CXXFLAGS
6319 OBJCFLAGS=$OBJCFLAGS
6320 ASFLAGS=$ASFLAGS
6321 AS_C=$AS_C
6322 AS_O=$AS_O
6323 OBJCC_C=$OBJCC_C
6324 OBJCC_E=$OBJCC_E
6325 OBJCC_O=$OBJCC_O
6326 CC_C=$CC_C
6327 CC_E=$CC_E
6328 CC_O=$CC_O
6329 CXX_C=$CXX_C
6330 CXX_O=$CXX_O
6331 LD_O=$LD_O
6332 LD_LIB=$LD_LIB
6333 LD_PATH=$LD_PATH
6334 DLLTOOL=$dlltool
6335 WINDRES=$windres
6336 DEPWINDRES=$dep_cc
6337 DOXYGEN=$doxygen
6338 LDFLAGS=$LDFLAGS
6339 LDEXEFLAGS=$LDEXEFLAGS
6340 LDLIBFLAGS=$LDLIBFLAGS
6341 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6342 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6343 YASMFLAGS=$YASMFLAGS
6344 BUILDSUF=$build_suffix
6345 PROGSSUF=$progs_suffix
6346 FULLNAME=$FULLNAME
6347 LIBPREF=$LIBPREF
6348 LIBSUF=$LIBSUF
6349 LIBNAME=$LIBNAME
6350 SLIBPREF=$SLIBPREF
6351 SLIBSUF=$SLIBSUF
6352 EXESUF=$EXESUF
6353 EXTRA_VERSION=$extra_version
6354 CCDEP=$CCDEP
6355 CXXDEP=$CXXDEP
6356 CCDEP_FLAGS=$CCDEP_FLAGS
6357 ASDEP=$ASDEP
6358 ASDEP_FLAGS=$ASDEP_FLAGS
6359 CC_DEPFLAGS=$CC_DEPFLAGS
6360 AS_DEPFLAGS=$AS_DEPFLAGS
6361 HOSTCC=$host_cc
6362 HOSTLD=$host_ld
6363 HOSTCFLAGS=$host_cflags
6364 HOSTCPPFLAGS=$host_cppflags
6365 HOSTEXESUF=$HOSTEXESUF
6366 HOSTLDFLAGS=$host_ldflags
6367 HOSTLIBS=$host_libs
6368 DEPHOSTCC=$host_cc
6369 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6370 HOSTCCDEP=$HOSTCCDEP
6371 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6372 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6373 HOSTCC_C=$HOSTCC_C
6374 HOSTCC_O=$HOSTCC_O
6375 HOSTLD_O=$HOSTLD_O
6376 TARGET_EXEC=$target_exec $target_exec_args
6377 TARGET_PATH=$target_path
6378 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6379 CFLAGS-ffplay=$sdl_cflags
6380 ZLIB=$($ldflags_filter -lz)
6381 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6382 EXTRALIBS=$extralibs
6383 COMPAT_OBJS=$compat_objs
6384 EXEOBJS=$exeobjs
6385 INSTALL=$install
6386 LIBTARGET=${LIBTARGET}
6387 SLIBNAME=${SLIBNAME}
6388 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6389 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6390 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6391 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6392 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6393 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6394 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6395 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6396 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6397 NOREDZONE_FLAGS=$noredzone_flags
6398 EOF
6399
6400 get_version(){
6401     lcname=lib${1}
6402     name=$(toupper $lcname)
6403     file=$source_path/$lcname/version.h
6404     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6405     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6406     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6407     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6408     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6409     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6410 }
6411
6412 map 'get_version $v' $LIBRARY_LIST
6413
6414 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6415
6416 print_program_libs(){
6417     eval "program_libs=\$${1}_libs"
6418     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6419 }
6420
6421 map 'print_program_libs $v' $PROGRAM_LIST
6422
6423 cat > $TMPH <<EOF
6424 /* Automatically generated by configure - do not modify! */
6425 #ifndef FFMPEG_CONFIG_H
6426 #define FFMPEG_CONFIG_H
6427 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6428 #define FFMPEG_LICENSE "$(c_escape $license)"
6429 #define CONFIG_THIS_YEAR 2016
6430 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6431 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6432 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6433 #define av_restrict $_restrict
6434 #define EXTERN_PREFIX "${extern_prefix}"
6435 #define EXTERN_ASM ${extern_prefix}
6436 #define BUILDSUF "$build_suffix"
6437 #define SLIBSUF "$SLIBSUF"
6438 #define HAVE_MMX2 HAVE_MMXEXT
6439 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6440 EOF
6441
6442 test -n "$assert_level" &&
6443     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6444
6445 test -n "$malloc_prefix" &&
6446     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6447
6448 if enabled yasm; then
6449     append config_files $TMPASM
6450     printf '' >$TMPASM
6451 fi
6452
6453 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6454
6455
6456 mkdir -p doc
6457 mkdir -p tests
6458 mkdir -p tests/api
6459 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6460
6461 print_config ARCH_   "$config_files" $ARCH_LIST
6462 print_config HAVE_   "$config_files" $HAVE_LIST
6463 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6464                                      $CONFIG_EXTRA      \
6465                                      $ALL_COMPONENTS    \
6466
6467 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6468 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6469
6470 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6471 cp_if_changed $TMPH config.h
6472 touch .config
6473
6474 enabled yasm && cp_if_changed $TMPASM config.asm
6475
6476 cat > $TMPH <<EOF
6477 /* Generated by ffconf */
6478 #ifndef AVUTIL_AVCONFIG_H
6479 #define AVUTIL_AVCONFIG_H
6480 EOF
6481
6482 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6483
6484 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6485
6486 cp_if_changed $TMPH libavutil/avconfig.h
6487
6488 if test -n "$WARNINGS"; then
6489     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6490     enabled fatal_warnings && exit 1
6491 fi
6492
6493 # build pkg-config files
6494
6495 lib_version(){
6496     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6497 }
6498
6499 pkgconfig_generate(){
6500     name=$1
6501     shortname=${name#lib}${build_suffix}
6502     comment=$2
6503     version=$3
6504     libs=$4
6505     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6506     requires=${requires%, }
6507     enabled ${name#lib} || return 0
6508     mkdir -p $name
6509     cat <<EOF > $name/$name${build_suffix}.pc
6510 prefix=$prefix
6511 exec_prefix=\${prefix}
6512 libdir=$libdir
6513 includedir=$incdir
6514
6515 Name: $name
6516 Description: $comment
6517 Version: $version
6518 Requires: $(enabled shared || echo $requires)
6519 Requires.private: $(enabled shared && echo $requires)
6520 Conflicts:
6521 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6522 Libs.private: $(enabled shared && echo $libs)
6523 Cflags: -I\${includedir}
6524 EOF
6525
6526 mkdir -p doc/examples/pc-uninstalled
6527 includedir=${source_path}
6528 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6529     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6530 prefix=
6531 exec_prefix=
6532 libdir=\${pcfiledir}/../../../$name
6533 includedir=${includedir}
6534
6535 Name: $name
6536 Description: $comment
6537 Version: $version
6538 Requires: $requires
6539 Conflicts:
6540 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6541 Cflags: -I\${includedir}
6542 EOF
6543 }
6544
6545 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6546 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6547 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6548 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6549 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6550 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6551 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6552 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6553 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"