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     sync_val_compare_and_swap
1736 "
1737 HAVE_LIST_CMDLINE="
1738     inline_asm
1739     symver
1740     yasm
1741 "
1742
1743 HAVE_LIST_PUB="
1744     bigendian
1745     fast_unaligned
1746     incompatible_libav_abi
1747 "
1748
1749 HEADERS_LIST="
1750     alsa_asoundlib_h
1751     altivec_h
1752     arpa_inet_h
1753     asm_types_h
1754     cdio_paranoia_h
1755     cdio_paranoia_paranoia_h
1756     dev_bktr_ioctl_bt848_h
1757     dev_bktr_ioctl_meteor_h
1758     dev_ic_bt8xx_h
1759     dev_video_bktr_ioctl_bt848_h
1760     dev_video_meteor_ioctl_meteor_h
1761     direct_h
1762     dirent_h
1763     dlfcn_h
1764     d3d11_h
1765     dxva_h
1766     ES2_gl_h
1767     gsm_h
1768     io_h
1769     mach_mach_time_h
1770     machine_ioctl_bt848_h
1771     machine_ioctl_meteor_h
1772     malloc_h
1773     opencv2_core_core_c_h
1774     openjpeg_2_1_openjpeg_h
1775     openjpeg_2_0_openjpeg_h
1776     openjpeg_1_5_openjpeg_h
1777     OpenGL_gl3_h
1778     poll_h
1779     sndio_h
1780     soundcard_h
1781     sys_mman_h
1782     sys_param_h
1783     sys_resource_h
1784     sys_select_h
1785     sys_soundcard_h
1786     sys_time_h
1787     sys_un_h
1788     sys_videoio_h
1789     termios_h
1790     udplite_h
1791     unistd_h
1792     valgrind_valgrind_h
1793     windows_h
1794     winsock2_h
1795 "
1796
1797 INTRINSICS_LIST="
1798     intrinsics_neon
1799 "
1800
1801 COMPLEX_FUNCS="
1802     cabs
1803     cexp
1804 "
1805
1806 MATH_FUNCS="
1807     atanf
1808     atan2f
1809     cbrt
1810     cbrtf
1811     copysign
1812     cosf
1813     erf
1814     exp2
1815     exp2f
1816     expf
1817     hypot
1818     isfinite
1819     isinf
1820     isnan
1821     ldexpf
1822     llrint
1823     llrintf
1824     log2
1825     log2f
1826     log10f
1827     lrint
1828     lrintf
1829     powf
1830     rint
1831     round
1832     roundf
1833     sinf
1834     trunc
1835     truncf
1836 "
1837
1838 SYSTEM_FUNCS="
1839     access
1840     aligned_malloc
1841     arc4random
1842     clock_gettime
1843     closesocket
1844     CommandLineToArgvW
1845     CoTaskMemFree
1846     CryptGenRandom
1847     dlopen
1848     fcntl
1849     flt_lim
1850     fork
1851     getaddrinfo
1852     gethrtime
1853     getopt
1854     GetProcessAffinityMask
1855     GetProcessMemoryInfo
1856     GetProcessTimes
1857     getrusage
1858     GetSystemTimeAsFileTime
1859     gettimeofday
1860     glob
1861     glXGetProcAddress
1862     gmtime_r
1863     inet_aton
1864     isatty
1865     jack_port_get_latency_range
1866     kbhit
1867     localtime_r
1868     lstat
1869     lzo1x_999_compress
1870     mach_absolute_time
1871     MapViewOfFile
1872     memalign
1873     mkstemp
1874     mmap
1875     mprotect
1876     nanosleep
1877     PeekNamedPipe
1878     posix_memalign
1879     pthread_cancel
1880     sched_getaffinity
1881     SetConsoleTextAttribute
1882     SetConsoleCtrlHandler
1883     setmode
1884     setrlimit
1885     Sleep
1886     strerror_r
1887     sysconf
1888     sysctl
1889     usleep
1890     UTGetOSTypeFromString
1891     VirtualAlloc
1892     wglGetProcAddress
1893 "
1894
1895 TOOLCHAIN_FEATURES="
1896     as_dn_directive
1897     as_func
1898     as_object_arch
1899     asm_mod_q
1900     attribute_may_alias
1901     attribute_packed
1902     ebp_available
1903     ebx_available
1904     gnu_as
1905     gnu_windres
1906     ibm_asm
1907     inline_asm_direct_symbol_refs
1908     inline_asm_labels
1909     inline_asm_nonlocal_labels
1910     pragma_deprecated
1911     rsync_contimeout
1912     symver_asm_label
1913     symver_gnu_asm
1914     vfp_args
1915     xform_asm
1916     xmm_clobbers
1917 "
1918
1919 TYPES_LIST="
1920     CONDITION_VARIABLE_Ptr
1921     socklen_t
1922     struct_addrinfo
1923     struct_group_source_req
1924     struct_ip_mreq_source
1925     struct_ipv6_mreq
1926     struct_pollfd
1927     struct_rusage_ru_maxrss
1928     struct_sctp_event_subscribe
1929     struct_sockaddr_in6
1930     struct_sockaddr_sa_len
1931     struct_sockaddr_storage
1932     struct_stat_st_mtim_tv_nsec
1933     struct_v4l2_frmivalenum_discrete
1934 "
1935
1936 HAVE_LIST="
1937     $ARCH_EXT_LIST
1938     $(add_suffix _external $ARCH_EXT_LIST)
1939     $(add_suffix _inline   $ARCH_EXT_LIST)
1940     $ARCH_FEATURES
1941     $ATOMICS_LIST
1942     $BUILTIN_LIST
1943     $COMPLEX_FUNCS
1944     $HAVE_LIST_CMDLINE
1945     $HAVE_LIST_PUB
1946     $HEADERS_LIST
1947     $INTRINSICS_LIST
1948     $MATH_FUNCS
1949     $SYSTEM_FUNCS
1950     $THREADS_LIST
1951     $TOOLCHAIN_FEATURES
1952     $TYPES_LIST
1953     atomics_native
1954     dos_paths
1955     dxva2_lib
1956     dxva2api_cobj
1957     libc_msvcrt
1958     libdc1394_1
1959     libdc1394_2
1960     makeinfo
1961     makeinfo_html
1962     perl
1963     pod2man
1964     sdl
1965     section_data_rel_ro
1966     texi2html
1967     threads
1968     vaapi_x11
1969     vdpau_x11
1970     winrt
1971     xlib
1972 "
1973
1974 # options emitted with CONFIG_ prefix but not available on the command line
1975 CONFIG_EXTRA="
1976     aandcttables
1977     ac3dsp
1978     audio_frame_queue
1979     audiodsp
1980     blockdsp
1981     bswapdsp
1982     cabac
1983     dirac_parse
1984     dvprofile
1985     exif
1986     faandct
1987     faanidct
1988     fdctdsp
1989     flacdsp
1990     fmtconvert
1991     frame_thread_encoder
1992     g722dsp
1993     golomb
1994     gplv3
1995     h263dsp
1996     h264chroma
1997     h264dsp
1998     h264pred
1999     h264qpel
2000     hpeldsp
2001     huffman
2002     huffyuvdsp
2003     huffyuvencdsp
2004     idctdsp
2005     iirfilter
2006     imdct15
2007     intrax8
2008     ividsp
2009     jpegtables
2010     lgplv3
2011     libx262
2012     llauddsp
2013     llviddsp
2014     lpc
2015     lzf
2016     me_cmp
2017     mpeg_er
2018     mpegaudio
2019     mpegaudiodsp
2020     mpegvideo
2021     mpegvideoenc
2022     mss34dsp
2023     pixblockdsp
2024     qpeldsp
2025     qsv
2026     qsvdec
2027     qsvenc
2028     rangecoder
2029     riffdec
2030     riffenc
2031     rtpdec
2032     rtpenc_chain
2033     rv34dsp
2034     sinewin
2035     snappy
2036     startcode
2037     texturedsp
2038     texturedspenc
2039     tpeldsp
2040     videodsp
2041     vp3dsp
2042     vp56dsp
2043     vp8dsp
2044     wma_freqs
2045     wmv2dsp
2046 "
2047
2048 CMDLINE_SELECT="
2049     $ARCH_EXT_LIST
2050     $CONFIG_LIST
2051     $HAVE_LIST_CMDLINE
2052     $THREADS_LIST
2053     asm
2054     cross_compile
2055     debug
2056     extra_warnings
2057     logging
2058     lto
2059     optimizations
2060     rpath
2061     stripping
2062 "
2063
2064 PATHS_LIST="
2065     bindir
2066     datadir
2067     docdir
2068     incdir
2069     libdir
2070     mandir
2071     pkgconfigdir
2072     prefix
2073     shlibdir
2074 "
2075
2076 CMDLINE_SET="
2077     $PATHS_LIST
2078     ar
2079     arch
2080     as
2081     assert_level
2082     build_suffix
2083     cc
2084     objcc
2085     cpu
2086     cross_prefix
2087     custom_allocator
2088     cxx
2089     dep_cc
2090     doxygen
2091     env
2092     extra_version
2093     gas
2094     host_cc
2095     host_cflags
2096     host_ld
2097     host_ldflags
2098     host_libs
2099     host_os
2100     install
2101     ld
2102     logfile
2103     malloc_prefix
2104     nm
2105     optflags
2106     pkg_config
2107     pkg_config_flags
2108     progs_suffix
2109     random_seed
2110     ranlib
2111     samples
2112     strip
2113     sws_max_filter_size
2114     sysinclude
2115     sysroot
2116     target_exec
2117     target_os
2118     target_path
2119     target_samples
2120     tempprefix
2121     toolchain
2122     valgrind
2123     yasmexe
2124 "
2125
2126 CMDLINE_APPEND="
2127     extra_cflags
2128     extra_cxxflags
2129     extra_objcflags
2130     host_cppflags
2131 "
2132
2133 # code dependency declarations
2134
2135 # architecture extensions
2136
2137 armv5te_deps="arm"
2138 armv6_deps="arm"
2139 armv6t2_deps="arm"
2140 armv8_deps="aarch64"
2141 neon_deps_any="aarch64 arm"
2142 intrinsics_neon_deps="neon"
2143 vfp_deps_any="aarch64 arm"
2144 vfpv3_deps="vfp"
2145 setend_deps="arm"
2146
2147 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2148
2149 mipsfpu_deps="mips"
2150 mipsdsp_deps="mips"
2151 mipsdspr2_deps="mips"
2152 mips32r2_deps="mips"
2153 mips32r6_deps="mips"
2154 mips64r2_deps="mips"
2155 mips64r6_deps="mips"
2156 msa_deps="mips"
2157 mmi_deps="mips"
2158
2159 altivec_deps="ppc"
2160 dcbzl_deps="ppc"
2161 ldbrx_deps="ppc"
2162 ppc4xx_deps="ppc"
2163 vsx_deps="altivec"
2164 power8_deps="vsx"
2165
2166 cpunop_deps="i686"
2167 x86_64_select="i686"
2168 x86_64_suggest="fast_cmov"
2169
2170 amd3dnow_deps="mmx"
2171 amd3dnowext_deps="amd3dnow"
2172 i686_deps="x86"
2173 mmx_deps="x86"
2174 mmxext_deps="mmx"
2175 sse_deps="mmxext"
2176 sse2_deps="sse"
2177 sse3_deps="sse2"
2178 ssse3_deps="sse3"
2179 sse4_deps="ssse3"
2180 sse42_deps="sse4"
2181 aesni_deps="sse42"
2182 avx_deps="sse42"
2183 xop_deps="avx"
2184 fma3_deps="avx"
2185 fma4_deps="avx"
2186 avx2_deps="avx"
2187
2188 mmx_external_deps="yasm"
2189 mmx_inline_deps="inline_asm"
2190 mmx_suggest="mmx_external mmx_inline"
2191
2192 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2193     eval dep=\$${ext}_deps
2194     eval ${ext}_external_deps='"${dep}_external"'
2195     eval ${ext}_inline_deps='"${dep}_inline"'
2196     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2197 done
2198
2199 aligned_stack_if_any="aarch64 ppc x86"
2200 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2201 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2202 fast_unaligned_if_any="aarch64 ppc x86"
2203 simd_align_16_if_any="altivec neon sse"
2204
2205 # system capabilities
2206 symver_if_any="symver_asm_label symver_gnu_asm"
2207 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2208
2209 # threading support
2210 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2211 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2212 atomics_win32_if="MemoryBarrier"
2213 atomics_native_if_any="$ATOMICS_LIST"
2214 w32threads_deps="atomics_native"
2215 threads_if_any="$THREADS_LIST"
2216
2217 # subsystems
2218 dct_select="rdft"
2219 dirac_parse_select="golomb"
2220 error_resilience_select="me_cmp"
2221 faandct_deps="faan fdctdsp"
2222 faanidct_deps="faan idctdsp"
2223 frame_thread_encoder_deps="encoders threads"
2224 intrax8_select="error_resilience"
2225 mdct_select="fft"
2226 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2227 mpeg_er_select="error_resilience"
2228 mpegaudio_select="mpegaudiodsp"
2229 mpegaudiodsp_select="dct"
2230 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2231 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2232 qsvdec_select="qsv"
2233 qsvenc_select="qsv"
2234 rdft_select="fft"
2235
2236 # decoders / encoders
2237 aac_decoder_select="imdct15 mdct sinewin"
2238 aac_fixed_decoder_select="mdct sinewin"
2239 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2240 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2241 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2242 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2243 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2244 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2245 adpcm_g722_decoder_select="g722dsp"
2246 adpcm_g722_encoder_select="g722dsp"
2247 aic_decoder_select="golomb idctdsp"
2248 alac_encoder_select="lpc"
2249 als_decoder_select="bswapdsp"
2250 amrnb_decoder_select="lsp"
2251 amrwb_decoder_select="lsp"
2252 amv_decoder_select="sp5x_decoder exif"
2253 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2254 ape_decoder_select="bswapdsp llauddsp"
2255 apng_decoder_select="zlib"
2256 apng_encoder_select="huffyuvencdsp zlib"
2257 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2258 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2259 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2260 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2261 atrac1_decoder_select="mdct sinewin"
2262 atrac3_decoder_select="mdct"
2263 atrac3p_decoder_select="mdct sinewin"
2264 avrn_decoder_select="exif jpegtables"
2265 bink_decoder_select="blockdsp hpeldsp"
2266 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2267 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2268 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2269 cllc_decoder_select="bswapdsp"
2270 comfortnoise_encoder_select="lpc"
2271 cook_decoder_select="audiodsp mdct sinewin"
2272 cscd_decoder_select="lzo"
2273 cscd_decoder_suggest="zlib"
2274 dca_decoder_select="fmtconvert mdct"
2275 dds_decoder_select="texturedsp"
2276 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2277 dnxhd_decoder_select="blockdsp idctdsp"
2278 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2279 dvvideo_decoder_select="dvprofile idctdsp"
2280 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2281 dxa_decoder_select="zlib"
2282 dxv_decoder_select="lzf texturedsp"
2283 eac3_decoder_select="ac3_decoder"
2284 eac3_encoder_select="ac3_encoder"
2285 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2286 eatgq_decoder_select="aandcttables"
2287 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2288 exr_decoder_select="zlib"
2289 ffv1_decoder_select="golomb rangecoder"
2290 ffv1_encoder_select="rangecoder"
2291 ffvhuff_decoder_select="huffyuv_decoder"
2292 ffvhuff_encoder_select="huffyuv_encoder"
2293 fic_decoder_select="golomb"
2294 flac_decoder_select="flacdsp golomb"
2295 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2296 flashsv2_decoder_select="zlib"
2297 flashsv2_encoder_select="zlib"
2298 flashsv_decoder_select="zlib"
2299 flashsv_encoder_select="zlib"
2300 flv_decoder_select="h263_decoder"
2301 flv_encoder_select="h263_encoder"
2302 fourxm_decoder_select="blockdsp bswapdsp"
2303 fraps_decoder_select="bswapdsp huffman"
2304 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2305 g729_decoder_select="audiodsp"
2306 h261_decoder_select="mpegvideo"
2307 h261_encoder_select="aandcttables mpegvideoenc"
2308 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2309 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2310 h263i_decoder_select="h263_decoder"
2311 h263p_decoder_select="h263_decoder"
2312 h263p_encoder_select="h263_encoder"
2313 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2314 h264_decoder_suggest="error_resilience"
2315 h264_qsv_decoder_deps="libmfx"
2316 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2317 h264_qsv_encoder_deps="libmfx"
2318 h264_qsv_encoder_select="qsvenc"
2319 hap_decoder_select="snappy texturedsp"
2320 hap_encoder_deps="libsnappy"
2321 hap_encoder_select="texturedspenc"
2322 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2323 hevc_qsv_decoder_deps="libmfx"
2324 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2325 hevc_qsv_encoder_deps="libmfx"
2326 hevc_qsv_encoder_select="qsvenc"
2327 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2328 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2329 iac_decoder_select="imc_decoder"
2330 imc_decoder_select="bswapdsp fft mdct sinewin"
2331 indeo3_decoder_select="hpeldsp"
2332 indeo4_decoder_select="ividsp"
2333 indeo5_decoder_select="ividsp"
2334 interplay_video_decoder_select="hpeldsp"
2335 jpegls_decoder_select="golomb mjpeg_decoder"
2336 jpegls_encoder_select="golomb"
2337 jv_decoder_select="blockdsp"
2338 lagarith_decoder_select="huffyuvdsp"
2339 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2340 loco_decoder_select="golomb"
2341 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2342 metasound_decoder_select="lsp mdct sinewin"
2343 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2344 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2345 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2346 mjpegb_decoder_select="mjpeg_decoder"
2347 mlp_decoder_select="mlp_parser"
2348 motionpixels_decoder_select="bswapdsp"
2349 mp1_decoder_select="mpegaudio"
2350 mp1float_decoder_select="mpegaudio"
2351 mp2_decoder_select="mpegaudio"
2352 mp2float_decoder_select="mpegaudio"
2353 mp3_decoder_select="mpegaudio"
2354 mp3adu_decoder_select="mpegaudio"
2355 mp3adufloat_decoder_select="mpegaudio"
2356 mp3float_decoder_select="mpegaudio"
2357 mp3on4_decoder_select="mpegaudio"
2358 mp3on4float_decoder_select="mpegaudio"
2359 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2360 mpc8_decoder_select="mpegaudiodsp"
2361 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2362 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2363 mpegvideo_decoder_select="mpegvideo"
2364 mpeg1video_decoder_select="mpegvideo"
2365 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2366 mpeg2video_decoder_select="mpegvideo"
2367 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2368 mpeg2_qsv_decoder_deps="libmfx"
2369 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2370 mpeg2_qsv_encoder_deps="libmfx"
2371 mpeg2_qsv_encoder_select="qsvenc"
2372 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2373 mpeg4_encoder_select="h263_encoder"
2374 msa1_decoder_select="mss34dsp"
2375 msmpeg4v1_decoder_select="h263_decoder"
2376 msmpeg4v2_decoder_select="h263_decoder"
2377 msmpeg4v2_encoder_select="h263_encoder"
2378 msmpeg4v3_decoder_select="h263_decoder"
2379 msmpeg4v3_encoder_select="h263_encoder"
2380 mss2_decoder_select="vc1_decoder"
2381 mts2_decoder_select="mss34dsp"
2382 mxpeg_decoder_select="mjpeg_decoder"
2383 nellymoser_decoder_select="mdct sinewin"
2384 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2385 nuv_decoder_select="idctdsp lzo"
2386 on2avc_decoder_select="mdct"
2387 opus_decoder_deps="swresample"
2388 opus_decoder_select="imdct15"
2389 png_decoder_select="zlib"
2390 png_encoder_select="huffyuvencdsp zlib"
2391 prores_decoder_select="blockdsp idctdsp"
2392 prores_encoder_select="fdctdsp"
2393 qcelp_decoder_select="lsp"
2394 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2395 ra_144_decoder_select="audiodsp"
2396 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2397 ralf_decoder_select="golomb"
2398 rawvideo_decoder_select="bswapdsp"
2399 rscc_decoder_select="zlib"
2400 rtjpeg_decoder_select="me_cmp"
2401 rv10_decoder_select="h263_decoder"
2402 rv10_encoder_select="h263_encoder"
2403 rv20_decoder_select="h263_decoder"
2404 rv20_encoder_select="h263_encoder"
2405 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2406 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2407 screenpresso_decoder_select="zlib"
2408 shorten_decoder_select="golomb"
2409 sipr_decoder_select="lsp"
2410 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2411 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2412 sonic_decoder_select="golomb rangecoder"
2413 sonic_encoder_select="golomb rangecoder"
2414 sonic_ls_encoder_select="golomb rangecoder"
2415 sp5x_decoder_select="mjpeg_decoder"
2416 svq1_decoder_select="hpeldsp"
2417 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2418 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2419 svq3_decoder_suggest="zlib"
2420 tak_decoder_select="audiodsp"
2421 tdsc_decoder_select="zlib mjpeg_decoder"
2422 theora_decoder_select="vp3_decoder"
2423 thp_decoder_select="mjpeg_decoder"
2424 tiff_decoder_suggest="zlib lzma"
2425 tiff_encoder_suggest="zlib"
2426 truehd_decoder_select="mlp_parser"
2427 truemotion2_decoder_select="bswapdsp"
2428 truespeech_decoder_select="bswapdsp"
2429 tscc_decoder_select="zlib"
2430 twinvq_decoder_select="mdct lsp sinewin"
2431 txd_decoder_select="texturedsp"
2432 utvideo_decoder_select="bswapdsp"
2433 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2434 vble_decoder_select="huffyuvdsp"
2435 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2436 vc1_qsv_decoder_deps="libmfx"
2437 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2438 vc1image_decoder_select="vc1_decoder"
2439 vorbis_decoder_select="mdct"
2440 vorbis_encoder_select="mdct"
2441 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2442 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2443 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2444 vp6a_decoder_select="vp6_decoder"
2445 vp6f_decoder_select="vp6_decoder"
2446 vp7_decoder_select="h264pred videodsp vp8dsp"
2447 vp8_decoder_select="h264pred videodsp vp8dsp"
2448 vp9_decoder_select="videodsp vp9_parser"
2449 webp_decoder_select="vp8_decoder exif"
2450 wmalossless_decoder_select="llauddsp"
2451 wmapro_decoder_select="mdct sinewin wma_freqs"
2452 wmav1_decoder_select="mdct sinewin wma_freqs"
2453 wmav1_encoder_select="mdct sinewin wma_freqs"
2454 wmav2_decoder_select="mdct sinewin wma_freqs"
2455 wmav2_encoder_select="mdct sinewin wma_freqs"
2456 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2457 wmv1_decoder_select="h263_decoder"
2458 wmv1_encoder_select="h263_encoder"
2459 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2460 wmv2_encoder_select="h263_encoder wmv2dsp"
2461 wmv3_decoder_select="vc1_decoder"
2462 wmv3image_decoder_select="wmv3_decoder"
2463 xma1_decoder_select="wmapro_decoder"
2464 xma2_decoder_select="wmapro_decoder"
2465 zerocodec_decoder_select="zlib"
2466 zlib_decoder_select="zlib"
2467 zlib_encoder_select="zlib"
2468 zmbv_decoder_select="zlib"
2469 zmbv_encoder_select="zlib"
2470
2471 # hardware accelerators
2472 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2473 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2474 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2475 vaapi_deps="va_va_h"
2476 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2477 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2478 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2479 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2480 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2481 xvmc_deps="X11_extensions_XvMClib_h"
2482
2483 h263_vaapi_hwaccel_deps="vaapi"
2484 h263_vaapi_hwaccel_select="h263_decoder"
2485 h263_videotoolbox_hwaccel_deps="videotoolbox"
2486 h263_videotoolbox_hwaccel_select="h263_decoder"
2487 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2488 h264_d3d11va_hwaccel_deps="d3d11va"
2489 h264_d3d11va_hwaccel_select="h264_decoder"
2490 h264_dxva2_hwaccel_deps="dxva2"
2491 h264_dxva2_hwaccel_select="h264_decoder"
2492 h264_mmal_decoder_deps="mmal"
2493 h264_mmal_decoder_select="mmal"
2494 h264_mmal_hwaccel_deps="mmal"
2495 h264_qsv_hwaccel_deps="libmfx"
2496 h264_vaapi_hwaccel_deps="vaapi"
2497 h264_vaapi_hwaccel_select="h264_decoder"
2498 h264_vda_decoder_deps="vda"
2499 h264_vda_decoder_select="h264_decoder"
2500 h264_vda_hwaccel_deps="vda"
2501 h264_vda_hwaccel_select="h264_decoder"
2502 h264_vda_old_hwaccel_deps="vda"
2503 h264_vda_old_hwaccel_select="h264_decoder"
2504 h264_vdpau_decoder_deps="vdpau"
2505 h264_vdpau_decoder_select="h264_decoder"
2506 h264_vdpau_hwaccel_deps="vdpau"
2507 h264_vdpau_hwaccel_select="h264_decoder"
2508 h264_videotoolbox_hwaccel_deps="videotoolbox"
2509 h264_videotoolbox_hwaccel_select="h264_decoder"
2510 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2511 hevc_d3d11va_hwaccel_select="hevc_decoder"
2512 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2513 hevc_dxva2_hwaccel_select="hevc_decoder"
2514 hevc_qsv_hwaccel_deps="libmfx"
2515 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2516 hevc_vaapi_hwaccel_select="hevc_decoder"
2517 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2518 hevc_vdpau_hwaccel_select="hevc_decoder"
2519 mpeg_vdpau_decoder_deps="vdpau"
2520 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2521 mpeg_xvmc_hwaccel_deps="xvmc"
2522 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2523 mpeg1_vdpau_decoder_deps="vdpau"
2524 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2525 mpeg1_vdpau_hwaccel_deps="vdpau"
2526 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2527 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2528 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2529 mpeg1_xvmc_hwaccel_deps="xvmc"
2530 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2531 mpeg2_crystalhd_decoder_select="crystalhd"
2532 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2533 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2534 mpeg2_dxva2_hwaccel_deps="dxva2"
2535 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2536 mpeg2_mmal_decoder_deps="mmal"
2537 mpeg2_mmal_decoder_select="mmal"
2538 mpeg2_mmal_hwaccel_deps="mmal"
2539 mpeg2_qsv_hwaccel_deps="libmfx"
2540 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2541 mpeg2_vaapi_hwaccel_deps="vaapi"
2542 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2543 mpeg2_vdpau_hwaccel_deps="vdpau"
2544 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2545 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2546 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_xvmc_hwaccel_deps="xvmc"
2548 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2549 mpeg4_crystalhd_decoder_select="crystalhd"
2550 mpeg4_mmal_decoder_deps="mmal"
2551 mpeg4_mmal_decoder_select="mmal"
2552 mpeg4_mmal_hwaccel_deps="mmal"
2553 mpeg4_vaapi_hwaccel_deps="vaapi"
2554 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2555 mpeg4_vdpau_decoder_deps="vdpau"
2556 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2557 mpeg4_vdpau_hwaccel_deps="vdpau"
2558 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2559 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2560 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2561 msmpeg4_crystalhd_decoder_select="crystalhd"
2562 vc1_crystalhd_decoder_select="crystalhd"
2563 vc1_d3d11va_hwaccel_deps="d3d11va"
2564 vc1_d3d11va_hwaccel_select="vc1_decoder"
2565 vc1_dxva2_hwaccel_deps="dxva2"
2566 vc1_dxva2_hwaccel_select="vc1_decoder"
2567 vc1_mmal_decoder_deps="mmal"
2568 vc1_mmal_decoder_select="mmal"
2569 vc1_mmal_hwaccel_deps="mmal"
2570 vc1_qsv_hwaccel_deps="libmfx"
2571 vc1_qsv_hwaccel_select="qsvdec_vc1"
2572 vc1_vaapi_hwaccel_deps="vaapi"
2573 vc1_vaapi_hwaccel_select="vc1_decoder"
2574 vc1_vdpau_decoder_deps="vdpau"
2575 vc1_vdpau_decoder_select="vc1_decoder"
2576 vc1_vdpau_hwaccel_deps="vdpau"
2577 vc1_vdpau_hwaccel_select="vc1_decoder"
2578 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2579 vp9_d3d11va_hwaccel_select="vp9_decoder"
2580 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2581 vp9_dxva2_hwaccel_select="vp9_decoder"
2582 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2583 vp9_vaapi_hwaccel_select="vp9_decoder"
2584 wmv3_crystalhd_decoder_select="crystalhd"
2585 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2586 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2587 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2588 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2589 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2590
2591 # parsers
2592 h264_parser_select="h264_decoder"
2593 hevc_parser_select="golomb"
2594 mpegvideo_parser_select="mpegvideo"
2595 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2596 vc1_parser_select="mpegvideo startcode vc1_decoder"
2597
2598 # bitstream_filters
2599 mjpeg2jpeg_bsf_select="jpegtables"
2600
2601 # external libraries
2602 chromaprint_muxer_deps="chromaprint"
2603 libcelt_decoder_deps="libcelt"
2604 libdcadec_decoder_deps="libdcadec"
2605 libfaac_encoder_deps="libfaac"
2606 libfaac_encoder_select="audio_frame_queue"
2607 libfdk_aac_decoder_deps="libfdk_aac"
2608 libfdk_aac_encoder_deps="libfdk_aac"
2609 libfdk_aac_encoder_select="audio_frame_queue"
2610 libgme_demuxer_deps="libgme"
2611 libgsm_decoder_deps="libgsm"
2612 libgsm_encoder_deps="libgsm"
2613 libgsm_ms_decoder_deps="libgsm"
2614 libgsm_ms_encoder_deps="libgsm"
2615 libilbc_decoder_deps="libilbc"
2616 libilbc_encoder_deps="libilbc"
2617 libkvazaar_encoder_deps="libkvazaar"
2618 libmodplug_demuxer_deps="libmodplug"
2619 libmp3lame_encoder_deps="libmp3lame"
2620 libmp3lame_encoder_select="audio_frame_queue"
2621 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2622 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2623 libopencore_amrnb_encoder_select="audio_frame_queue"
2624 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2625 libopenh264_encoder_deps="libopenh264"
2626 libopenjpeg_decoder_deps="libopenjpeg"
2627 libopenjpeg_encoder_deps="libopenjpeg"
2628 libopus_decoder_deps="libopus"
2629 libopus_encoder_deps="libopus"
2630 libopus_encoder_select="audio_frame_queue"
2631 libschroedinger_decoder_deps="libschroedinger"
2632 libschroedinger_encoder_deps="libschroedinger"
2633 libshine_encoder_deps="libshine"
2634 libshine_encoder_select="audio_frame_queue"
2635 libspeex_decoder_deps="libspeex"
2636 libspeex_encoder_deps="libspeex"
2637 libspeex_encoder_select="audio_frame_queue"
2638 libtheora_encoder_deps="libtheora"
2639 libtwolame_encoder_deps="libtwolame"
2640 libutvideo_decoder_deps="libutvideo"
2641 libutvideo_encoder_deps="libutvideo"
2642 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2643 libvorbis_decoder_deps="libvorbis"
2644 libvorbis_encoder_deps="libvorbis"
2645 libvorbis_encoder_select="audio_frame_queue"
2646 libvpx_vp8_decoder_deps="libvpx"
2647 libvpx_vp8_encoder_deps="libvpx"
2648 libvpx_vp9_decoder_deps="libvpx"
2649 libvpx_vp9_encoder_deps="libvpx"
2650 libwavpack_encoder_deps="libwavpack"
2651 libwebp_encoder_deps="libwebp"
2652 libwebp_anim_encoder_deps="libwebp"
2653 libx262_encoder_deps="libx262"
2654 libx264_encoder_deps="libx264"
2655 libx264rgb_encoder_deps="libx264"
2656 libx264rgb_encoder_select="libx264_encoder"
2657 libx265_encoder_deps="libx265"
2658 libxavs_encoder_deps="libxavs"
2659 libxvid_encoder_deps="libxvid"
2660 libzvbi_teletext_decoder_deps="libzvbi"
2661 nvenc_encoder_deps="nvenc"
2662 nvenc_h264_encoder_deps="nvenc"
2663 nvenc_hevc_encoder_deps="nvenc"
2664
2665 # demuxers / muxers
2666 ac3_demuxer_select="ac3_parser"
2667 asf_demuxer_select="riffdec"
2668 asf_o_demuxer_select="riffdec"
2669 asf_muxer_select="riffenc"
2670 asf_stream_muxer_select="asf_muxer"
2671 avi_demuxer_select="riffdec exif"
2672 avi_muxer_select="riffenc"
2673 avisynth_demuxer_deps="avisynth"
2674 avisynth_demuxer_select="riffdec"
2675 caf_demuxer_select="riffdec"
2676 dash_muxer_select="mp4_muxer"
2677 dirac_demuxer_select="dirac_parser"
2678 dts_demuxer_select="dca_parser"
2679 dtshd_demuxer_select="dca_parser"
2680 dv_demuxer_select="dvprofile"
2681 dv_muxer_select="dvprofile"
2682 dxa_demuxer_select="riffdec"
2683 eac3_demuxer_select="ac3_parser"
2684 f4v_muxer_select="mov_muxer"
2685 flac_demuxer_select="flac_parser"
2686 hds_muxer_select="flv_muxer"
2687 hls_muxer_select="mpegts_muxer"
2688 image2_alias_pix_demuxer_select="image2_demuxer"
2689 image2_brender_pix_demuxer_select="image2_demuxer"
2690 ipod_muxer_select="mov_muxer"
2691 ismv_muxer_select="mov_muxer"
2692 libnut_demuxer_deps="libnut"
2693 libnut_muxer_deps="libnut"
2694 matroska_audio_muxer_select="matroska_muxer"
2695 matroska_demuxer_select="riffdec"
2696 matroska_demuxer_suggest="bzlib lzo zlib"
2697 matroska_muxer_select="riffenc"
2698 mmf_muxer_select="riffenc"
2699 mov_demuxer_select="riffdec"
2700 mov_demuxer_suggest="zlib"
2701 mov_muxer_select="riffenc rtpenc_chain"
2702 mp3_demuxer_select="mpegaudio_parser"
2703 mp4_muxer_select="mov_muxer"
2704 mpegts_muxer_select="adts_muxer latm_muxer"
2705 mpegtsraw_demuxer_select="mpegts_demuxer"
2706 mxf_d10_muxer_select="mxf_muxer"
2707 mxf_opatom_muxer_select="mxf_muxer"
2708 nut_muxer_select="riffenc"
2709 nuv_demuxer_select="riffdec"
2710 oga_muxer_select="ogg_muxer"
2711 ogg_demuxer_select="dirac_parse"
2712 opus_muxer_select="ogg_muxer"
2713 psp_muxer_select="mov_muxer"
2714 rtp_demuxer_select="sdp_demuxer"
2715 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2716 rtsp_demuxer_select="http_protocol rtpdec"
2717 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2718 sap_demuxer_select="sdp_demuxer"
2719 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2720 sdp_demuxer_select="rtpdec"
2721 smoothstreaming_muxer_select="ismv_muxer"
2722 spdif_muxer_select="aac_parser"
2723 spx_muxer_select="ogg_muxer"
2724 swf_demuxer_suggest="zlib"
2725 tak_demuxer_select="tak_parser"
2726 tg2_muxer_select="mov_muxer"
2727 tgp_muxer_select="mov_muxer"
2728 vobsub_demuxer_select="mpegps_demuxer"
2729 w64_demuxer_select="wav_demuxer"
2730 w64_muxer_select="wav_muxer"
2731 wav_demuxer_select="riffdec"
2732 wav_muxer_select="riffenc"
2733 webm_muxer_select="riffenc"
2734 wtv_demuxer_select="riffdec"
2735 wtv_muxer_select="riffenc"
2736 xmv_demuxer_select="riffdec"
2737 xwma_demuxer_select="riffdec"
2738
2739 # indevs / outdevs
2740 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2741 alsa_outdev_deps="alsa_asoundlib_h"
2742 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2743 avfoundation_indev_select="avfoundation"
2744 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2745 caca_outdev_deps="libcaca"
2746 decklink_indev_deps="decklink pthreads"
2747 decklink_indev_extralibs="-lstdc++"
2748 decklink_outdev_deps="decklink pthreads"
2749 decklink_outdev_extralibs="-lstdc++"
2750 dshow_indev_deps="IBaseFilter"
2751 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2752 dv1394_indev_deps="dv1394"
2753 dv1394_indev_select="dv_demuxer"
2754 fbdev_indev_deps="linux_fb_h"
2755 fbdev_outdev_deps="linux_fb_h"
2756 gdigrab_indev_deps="CreateDIBSection"
2757 gdigrab_indev_extralibs="-lgdi32"
2758 gdigrab_indev_select="bmp_decoder"
2759 iec61883_indev_deps="libiec61883"
2760 jack_indev_deps="jack_jack_h sem_timedwait"
2761 lavfi_indev_deps="avfilter"
2762 libcdio_indev_deps="libcdio"
2763 libdc1394_indev_deps="libdc1394"
2764 libv4l2_indev_deps="libv4l2"
2765 openal_indev_deps="openal"
2766 opengl_outdev_deps="opengl"
2767 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2768 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2769 pulse_indev_deps="libpulse"
2770 pulse_outdev_deps="libpulse"
2771 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2772 qtkit_indev_select="qtkit"
2773 sdl_outdev_deps="sdl"
2774 sndio_indev_deps="sndio_h"
2775 sndio_outdev_deps="sndio_h"
2776 v4l_indev_deps="linux_videodev_h"
2777 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2778 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2779 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2780 vfwcap_indev_extralibs="-lavicap32"
2781 x11grab_indev_deps="x11grab"
2782 x11grab_xcb_indev_deps="libxcb"
2783 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2784 xv_outdev_extralibs="-lXv -lX11 -lXext"
2785
2786 # protocols
2787 async_protocol_deps="threads"
2788 bluray_protocol_deps="libbluray"
2789 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2790 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2791 ffrtmpcrypt_protocol_select="tcp_protocol"
2792 ffrtmphttp_protocol_deps="!librtmp_protocol"
2793 ffrtmphttp_protocol_select="http_protocol"
2794 ftp_protocol_select="tcp_protocol"
2795 gopher_protocol_select="network"
2796 http_protocol_select="tcp_protocol"
2797 httpproxy_protocol_select="tcp_protocol"
2798 https_protocol_select="tls_protocol"
2799 icecast_protocol_select="http_protocol"
2800 librtmp_protocol_deps="librtmp"
2801 librtmpe_protocol_deps="librtmp"
2802 librtmps_protocol_deps="librtmp"
2803 librtmpt_protocol_deps="librtmp"
2804 librtmpte_protocol_deps="librtmp"
2805 libsmbclient_protocol_deps="libsmbclient gplv3"
2806 libssh_protocol_deps="libssh"
2807 mmsh_protocol_select="http_protocol"
2808 mmst_protocol_select="network"
2809 rtmp_protocol_deps="!librtmp_protocol"
2810 rtmp_protocol_select="tcp_protocol"
2811 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2812 rtmps_protocol_deps="!librtmp_protocol"
2813 rtmps_protocol_select="tls_protocol"
2814 rtmpt_protocol_select="ffrtmphttp_protocol"
2815 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2816 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2817 rtp_protocol_select="udp_protocol"
2818 sctp_protocol_deps="struct_sctp_event_subscribe"
2819 sctp_protocol_select="network"
2820 srtp_protocol_select="rtp_protocol"
2821 tcp_protocol_select="network"
2822 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2823 tls_gnutls_protocol_select="tcp_protocol"
2824 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2825 tls_openssl_protocol_select="tcp_protocol"
2826 tls_schannel_protocol_deps="schannel"
2827 tls_schannel_protocol_select="tcp_protocol"
2828 tls_securetransport_protocol_deps="securetransport"
2829 tls_securetransport_protocol_select="tcp_protocol"
2830 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2831 udp_protocol_select="network"
2832 udplite_protocol_select="network"
2833 unix_protocol_deps="sys_un_h"
2834 unix_protocol_select="network"
2835
2836 # filters
2837 afftfilt_filter_deps="avcodec"
2838 afftfilt_filter_select="fft"
2839 amovie_filter_deps="avcodec avformat"
2840 aresample_filter_deps="swresample"
2841 ass_filter_deps="libass"
2842 asyncts_filter_deps="avresample"
2843 atempo_filter_deps="avcodec"
2844 atempo_filter_select="rdft"
2845 azmq_filter_deps="libzmq"
2846 blackframe_filter_deps="gpl"
2847 boxblur_filter_deps="gpl"
2848 bs2b_filter_deps="libbs2b"
2849 colormatrix_filter_deps="gpl"
2850 cover_rect_filter_deps="avcodec avformat gpl"
2851 cropdetect_filter_deps="gpl"
2852 delogo_filter_deps="gpl"
2853 deshake_filter_select="pixelutils"
2854 drawtext_filter_deps="libfreetype"
2855 ebur128_filter_deps="gpl"
2856 eq_filter_deps="gpl"
2857 fftfilt_filter_deps="avcodec"
2858 fftfilt_filter_select="rdft"
2859 find_rect_filter_deps="avcodec avformat gpl"
2860 flite_filter_deps="libflite"
2861 frei0r_filter_deps="frei0r dlopen"
2862 frei0r_src_filter_deps="frei0r dlopen"
2863 fspp_filter_deps="gpl"
2864 geq_filter_deps="gpl"
2865 histeq_filter_deps="gpl"
2866 hqdn3d_filter_deps="gpl"
2867 interlace_filter_deps="gpl"
2868 kerndeint_filter_deps="gpl"
2869 ladspa_filter_deps="ladspa dlopen"
2870 mcdeint_filter_deps="avcodec gpl"
2871 movie_filter_deps="avcodec avformat"
2872 mpdecimate_filter_deps="gpl"
2873 mpdecimate_filter_select="pixelutils"
2874 mptestsrc_filter_deps="gpl"
2875 negate_filter_deps="lut_filter"
2876 ocr_filter_deps="libtesseract"
2877 ocv_filter_deps="libopencv"
2878 owdenoise_filter_deps="gpl"
2879 pan_filter_deps="swresample"
2880 perspective_filter_deps="gpl"
2881 phase_filter_deps="gpl"
2882 pp7_filter_deps="gpl"
2883 pp_filter_deps="gpl postproc"
2884 pullup_filter_deps="gpl"
2885 removelogo_filter_deps="avcodec avformat swscale"
2886 repeatfields_filter_deps="gpl"
2887 resample_filter_deps="avresample"
2888 rubberband_filter_deps="librubberband"
2889 sab_filter_deps="gpl swscale"
2890 scale2ref_filter_deps="swscale"
2891 scale_filter_deps="swscale"
2892 select_filter_select="pixelutils"
2893 showcqt_filter_deps="avcodec avformat swscale"
2894 showcqt_filter_select="fft"
2895 showfreqs_filter_deps="avcodec"
2896 showfreqs_filter_select="fft"
2897 showspectrum_filter_deps="avcodec"
2898 showspectrum_filter_select="fft"
2899 showspectrumpic_filter_deps="avcodec"
2900 showspectrumpic_filter_select="fft"
2901 smartblur_filter_deps="gpl swscale"
2902 sofalizer_filter_deps="netcdf avcodec"
2903 sofalizer_filter_select="fft"
2904 spectrumsynth_filter_deps="avcodec"
2905 spectrumsynth_filter_select="fft"
2906 spp_filter_deps="gpl avcodec"
2907 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2908 stereo3d_filter_deps="gpl"
2909 subtitles_filter_deps="avformat avcodec libass"
2910 super2xsai_filter_deps="gpl"
2911 pixfmts_super2xsai_test_deps="super2xsai_filter"
2912 tinterlace_filter_deps="gpl"
2913 tinterlace_merge_test_deps="tinterlace_filter"
2914 tinterlace_pad_test_deps="tinterlace_filter"
2915 uspp_filter_deps="gpl avcodec"
2916 vidstabdetect_filter_deps="libvidstab"
2917 vidstabtransform_filter_deps="libvidstab"
2918 zmq_filter_deps="libzmq"
2919 zoompan_filter_deps="swscale"
2920 zscale_filter_deps="libzimg"
2921
2922 # examples
2923 avcodec_example_deps="avcodec avutil"
2924 avio_dir_cmd="avformat avutil"
2925 avio_reading="avformat avcodec avutil"
2926 decoding_encoding_example_deps="avcodec avformat avutil"
2927 demuxing_decoding_example_deps="avcodec avformat avutil"
2928 extract_mvs_example_deps="avcodec avformat avutil"
2929 filter_audio_example_deps="avfilter avutil"
2930 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2931 filtering_video_example_deps="avfilter avcodec avformat avutil"
2932 metadata_example_deps="avformat avutil"
2933 muxing_example_deps="avcodec avformat avutil swscale"
2934 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2935 remuxing_example_deps="avcodec avformat avutil"
2936 resampling_audio_example_deps="avutil swresample"
2937 scaling_video_example_deps="avutil swscale"
2938 transcode_aac_example_deps="avcodec avformat swresample"
2939 transcoding_example_deps="avfilter avcodec avformat avutil"
2940
2941 # libraries, in linking order
2942 avcodec_deps="avutil"
2943 avdevice_deps="avformat avcodec avutil"
2944 avfilter_deps="avutil"
2945 avformat_deps="avcodec avutil"
2946 avresample_deps="avutil"
2947 postproc_deps="avutil gpl"
2948 swresample_deps="avutil"
2949 swscale_deps="avutil"
2950
2951 # programs
2952 ffmpeg_deps="avcodec avfilter avformat swresample"
2953 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2954                null_filter
2955                setpts_filter trim_filter"
2956 ffplay_deps="avcodec avformat swscale swresample sdl"
2957 ffplay_libs='$sdl_libs'
2958 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2959 ffprobe_deps="avcodec avformat"
2960 ffserver_deps="avformat fork sarestart"
2961 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2962
2963 # documentation
2964 podpages_deps="perl"
2965 manpages_deps="perl pod2man"
2966 htmlpages_deps="perl"
2967 htmlpages_deps_any="makeinfo_html texi2html"
2968 txtpages_deps="perl makeinfo"
2969 doc_deps_any="manpages htmlpages podpages txtpages"
2970
2971 # default parameters
2972
2973 logfile="config.log"
2974
2975 # installation paths
2976 prefix_default="/usr/local"
2977 bindir_default='${prefix}/bin'
2978 datadir_default='${prefix}/share/ffmpeg'
2979 docdir_default='${prefix}/share/doc/ffmpeg'
2980 incdir_default='${prefix}/include'
2981 libdir_default='${prefix}/lib'
2982 mandir_default='${prefix}/share/man'
2983
2984 # toolchain
2985 ar_default="ar"
2986 cc_default="gcc"
2987 cxx_default="g++"
2988 host_cc_default="gcc"
2989 cp_f="cp -f"
2990 doxygen_default="doxygen"
2991 install="install"
2992 ln_s="ln -s -f"
2993 nm_default="nm -g"
2994 objformat="elf"
2995 pkg_config_default=pkg-config
2996 ranlib_default="ranlib"
2997 strip_default="strip"
2998 yasmexe_default="yasm"
2999 windres_default="windres"
3000
3001 # OS
3002 target_os_default=$(tolower $(uname -s))
3003 host_os=$target_os_default
3004
3005 # machine
3006 if test "$target_os_default" = aix; then
3007     arch_default=$(uname -p)
3008     strip_default="strip -X32_64"
3009 else
3010     arch_default=$(uname -m)
3011 fi
3012 cpu="generic"
3013 intrinsics="none"
3014
3015 # configurable options
3016 enable $PROGRAM_LIST
3017 enable $DOCUMENT_LIST
3018 enable $EXAMPLE_LIST
3019 enable $(filter_out avresample $LIBRARY_LIST)
3020 enable stripping
3021
3022 enable asm
3023 enable debug
3024 enable doc
3025 enable faan faandct faanidct
3026 enable optimizations
3027 enable runtime_cpudetect
3028 enable safe_bitstream_reader
3029 enable static
3030 enable swscale_alpha
3031 enable valgrind_backtrace
3032
3033 sws_max_filter_size_default=256
3034 set_default sws_max_filter_size
3035
3036 # Enable hwaccels by default.
3037 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3038 enable xlib
3039
3040 # build settings
3041 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3042 LIBPREF="lib"
3043 LIBSUF=".a"
3044 FULLNAME='$(NAME)$(BUILDSUF)'
3045 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3046 SLIBPREF="lib"
3047 SLIBSUF=".so"
3048 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3049 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3050 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3051 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3052 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3053 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3054
3055 asflags_filter=echo
3056 cflags_filter=echo
3057 ldflags_filter=echo
3058
3059 AS_C='-c'
3060 AS_O='-o $@'
3061 CC_C='-c'
3062 CC_E='-E -o $@'
3063 CC_O='-o $@'
3064 CXX_C='-c'
3065 CXX_O='-o $@'
3066 OBJCC_C='-c'
3067 OBJCC_E='-E -o $@'
3068 OBJCC_O='-o $@'
3069 LD_O='-o $@'
3070 LD_LIB='-l%'
3071 LD_PATH='-L'
3072 HOSTCC_C='-c'
3073 HOSTCC_E='-E -o $@'
3074 HOSTCC_O='-o $@'
3075 HOSTLD_O='-o $@'
3076
3077 host_libs='-lm'
3078 host_cflags_filter=echo
3079 host_ldflags_filter=echo
3080
3081 target_path='$(CURDIR)'
3082
3083 # since the object filename is not given with the -MM flag, the compiler
3084 # is only able to print the basename, and we must add the path ourselves
3085 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3086 DEPFLAGS='-MM'
3087
3088 # find source path
3089 if test -f configure; then
3090     source_path=.
3091 else
3092     source_path=$(cd $(dirname "$0"); pwd)
3093     case "$source_path" in
3094         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3095     esac
3096     test -e "$source_path/config.h" &&
3097         die "Out of tree builds are impossible with config.h in source dir."
3098 fi
3099
3100 for v in "$@"; do
3101     r=${v#*=}
3102     l=${v%"$r"}
3103     r=$(sh_quote "$r")
3104     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3105 done
3106
3107 find_things(){
3108     thing=$1
3109     pattern=$2
3110     file=$source_path/$3
3111     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3112 }
3113
3114 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3115 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3116 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3117 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3118 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3119 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3120 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3121 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3122 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3123 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3124 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3125
3126 ALL_COMPONENTS="
3127     $BSF_LIST
3128     $DECODER_LIST
3129     $DEMUXER_LIST
3130     $ENCODER_LIST
3131     $FILTER_LIST
3132     $HWACCEL_LIST
3133     $INDEV_LIST
3134     $MUXER_LIST
3135     $OUTDEV_LIST
3136     $PARSER_LIST
3137     $PROTOCOL_LIST
3138 "
3139
3140 for n in $COMPONENT_LIST; do
3141     v=$(toupper ${n%s})_LIST
3142     eval enable \$$v
3143     eval ${n}_if_any="\$$v"
3144 done
3145
3146 enable $ARCH_EXT_LIST
3147
3148 die_unknown(){
3149     echo "Unknown option \"$1\"."
3150     echo "See $0 --help for available options."
3151     exit 1
3152 }
3153
3154 print_in_columns() {
3155     cols=$(expr $ncols / 24)
3156     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3157 }
3158
3159 show_list() {
3160     suffix=_$1
3161     shift
3162     echo $* | sed s/$suffix//g | print_in_columns
3163     exit 0
3164 }
3165
3166 rand_list(){
3167     IFS=', '
3168     set -- $*
3169     unset IFS
3170     for thing; do
3171         comp=${thing%:*}
3172         prob=${thing#$comp}
3173         prob=${prob#:}
3174         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3175         echo "prob ${prob:-0.5}"
3176         printf '%s\n' $comp
3177     done
3178 }
3179
3180 do_random(){
3181     action=$1
3182     shift
3183     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3184     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3185 }
3186
3187 for opt do
3188     optval="${opt#*=}"
3189     case "$opt" in
3190         --extra-ldflags=*)
3191             add_ldflags $optval
3192         ;;
3193         --extra-ldexeflags=*)
3194             add_ldexeflags $optval
3195         ;;
3196         --extra-ldlibflags=*)
3197             add_ldlibflags $optval
3198         ;;
3199         --extra-libs=*)
3200             add_extralibs $optval
3201         ;;
3202         --disable-devices)
3203             disable $INDEV_LIST $OUTDEV_LIST
3204         ;;
3205         --enable-debug=*)
3206             debuglevel="$optval"
3207         ;;
3208         --disable-programs)
3209             disable $PROGRAM_LIST
3210         ;;
3211         --disable-everything)
3212             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3213         ;;
3214         --disable-all)
3215             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3216             disable $LIBRARY_LIST $PROGRAM_LIST doc
3217             enable avutil
3218         ;;
3219         --enable-random|--disable-random)
3220             action=${opt%%-random}
3221             do_random ${action#--} $COMPONENT_LIST
3222         ;;
3223         --enable-random=*|--disable-random=*)
3224             action=${opt%%-random=*}
3225             do_random ${action#--} $optval
3226         ;;
3227         --enable-*=*|--disable-*=*)
3228             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3229             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3230             eval list=\$$(toupper $thing)_LIST
3231             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3232             list=$(filter "$name" $list)
3233             [ "$list" = "" ] && warn "Option $opt did not match anything"
3234             $action $list
3235         ;;
3236         --enable-?*|--disable-?*)
3237             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3238             if is_in $option $COMPONENT_LIST; then
3239                 test $action = disable && action=unset
3240                 eval $action \$$(toupper ${option%s})_LIST
3241             elif is_in $option $CMDLINE_SELECT; then
3242                 $action $option
3243             else
3244                 die_unknown $opt
3245             fi
3246         ;;
3247         --list-*)
3248             NAME="${opt#--list-}"
3249             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3250             NAME=${NAME%s}
3251             eval show_list $NAME \$$(toupper $NAME)_LIST
3252         ;;
3253         --help|-h) show_help
3254         ;;
3255         --fatal-warnings) enable fatal_warnings
3256         ;;
3257         *)
3258             optname="${opt%%=*}"
3259             optname="${optname#--}"
3260             optname=$(echo "$optname" | sed 's/-/_/g')
3261             if is_in $optname $CMDLINE_SET; then
3262                 eval $optname='$optval'
3263             elif is_in $optname $CMDLINE_APPEND; then
3264                 append $optname "$optval"
3265             else
3266                 die_unknown $opt
3267             fi
3268         ;;
3269     esac
3270 done
3271
3272 for e in $env; do
3273     eval "export $e"
3274 done
3275
3276 disabled logging && logfile=/dev/null
3277
3278 # Disable all the library-specific components if the library itself
3279 # is disabled, see AVCODEC_LIST and following _LIST variables.
3280
3281 disable_components(){
3282     disabled ${1} && disable $(
3283         eval components="\$$(toupper ${1})_COMPONENTS"
3284         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3285     )
3286 }
3287
3288 map 'disable_components $v' $LIBRARY_LIST
3289
3290 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3291 set >> $logfile
3292
3293 test -n "$valgrind" && toolchain="valgrind-memcheck"
3294
3295 case "$toolchain" in
3296     clang-asan)
3297         cc_default="clang"
3298         add_cflags  -fsanitize=address
3299         add_ldflags -fsanitize=address
3300     ;;
3301     clang-tsan)
3302         cc_default="clang"
3303         add_cflags  -fsanitize=thread -pie
3304         add_ldflags -fsanitize=thread -pie
3305     ;;
3306     clang-usan)
3307         cc_default="clang"
3308         add_cflags  -fsanitize=undefined
3309         add_ldflags -fsanitize=undefined
3310     ;;
3311     gcc-asan)
3312         cc_default="gcc"
3313         add_cflags  -fsanitize=address
3314         add_ldflags -fsanitize=address
3315     ;;
3316     gcc-tsan)
3317         cc_default="gcc"
3318         add_cflags  -fsanitize=thread -pie -fPIC
3319         add_ldflags -fsanitize=thread -pie -fPIC
3320     ;;
3321     gcc-usan)
3322         cc_default="gcc"
3323         add_cflags  -fsanitize=undefined
3324         add_ldflags -fsanitize=undefined
3325     ;;
3326     valgrind-massif)
3327         target_exec_default=${valgrind:-"valgrind"}
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_default=${valgrind:-"valgrind"}
3332         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3333     ;;
3334     msvc)
3335         # Check whether the current MSVC version needs the C99 converter.
3336         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3337         # support enough of C99 to build ffmpeg. Default to the new
3338         # behaviour if the regexp was unable to match anything, since this
3339         # successfully parses the version number of existing supported
3340         # versions that require the converter (MSVC 2010 and 2012).
3341         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3342         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3343             cc_default="cl"
3344         else
3345             cc_default="c99wrap cl"
3346         fi
3347         ld_default="$source_path/compat/windows/mslink"
3348         nm_default="dumpbin -symbols"
3349         ar_default="lib"
3350         case "$arch" in
3351         arm*)
3352             as_default="armasm"
3353             ;;
3354         esac
3355         target_os_default="win32"
3356         # Use a relative path for TMPDIR. This makes sure all the
3357         # ffconf temp files are written with a relative path, avoiding
3358         # issues with msys/win32 path conversion for MSVC parameters
3359         # such as -Fo<file> or -out:<file>.
3360         TMPDIR=.
3361     ;;
3362     icl)
3363         cc_default="icl"
3364         ld_default="xilink"
3365         nm_default="dumpbin -symbols"
3366         ar_default="xilib"
3367         target_os_default="win32"
3368         TMPDIR=.
3369     ;;
3370     gcov)
3371         add_cflags  -fprofile-arcs -ftest-coverage
3372         add_ldflags -fprofile-arcs -ftest-coverage
3373     ;;
3374     hardened)
3375         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3376         add_cflags   -fno-strict-overflow -fstack-protector-all
3377         add_ldflags  -Wl,-z,relro -Wl,-z,now
3378     ;;
3379     ?*)
3380         die "Unknown toolchain $toolchain"
3381     ;;
3382 esac
3383
3384 test -n "$cross_prefix" && enable cross_compile
3385
3386 if enabled cross_compile; then
3387     test -n "$arch" && test -n "$target_os" ||
3388         die "Must specify target arch and OS when cross-compiling"
3389 fi
3390
3391 ar_default="${cross_prefix}${ar_default}"
3392 cc_default="${cross_prefix}${cc_default}"
3393 cxx_default="${cross_prefix}${cxx_default}"
3394 nm_default="${cross_prefix}${nm_default}"
3395 pkg_config_default="${cross_prefix}${pkg_config_default}"
3396 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3397     ranlib_default="${cross_prefix}${ranlib_default} -D"
3398 else
3399     ranlib_default="${cross_prefix}${ranlib_default}"
3400 fi
3401 strip_default="${cross_prefix}${strip_default}"
3402 windres_default="${cross_prefix}${windres_default}"
3403
3404 sysinclude_default="${sysroot}/usr/include"
3405
3406 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3407     target_exec target_os yasmexe
3408 enabled cross_compile || host_cc_default=$cc
3409 set_default host_cc
3410
3411 pkg_config_fail_message=""
3412 if ! $pkg_config --version >/dev/null 2>&1; then
3413     warn "$pkg_config not found, library detection may fail."
3414     pkg_config=false
3415 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3416     pkg_config_fail_message="
3417 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3418 fi
3419
3420 if test $doxygen != $doxygen_default && \
3421   ! $doxygen --version >/dev/null 2>&1; then
3422     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3423 fi
3424
3425 exesuf() {
3426     case $1 in
3427         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3428     esac
3429 }
3430
3431 EXESUF=$(exesuf $target_os)
3432 HOSTEXESUF=$(exesuf $host_os)
3433
3434 # set temporary file name
3435 : ${TMPDIR:=$TEMPDIR}
3436 : ${TMPDIR:=$TMP}
3437 : ${TMPDIR:=/tmp}
3438
3439 if [ -n "$tempprefix" ] ; then
3440     mktemp(){
3441         echo $tempprefix.${HOSTNAME}.${UID}
3442     }
3443 elif ! check_cmd mktemp -u XXXXXX; then
3444     # simple replacement for missing mktemp
3445     # NOT SAFE FOR GENERAL USE
3446     mktemp(){
3447         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3448     }
3449 fi
3450
3451 tmpfile(){
3452     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3453         (set -C; exec > $tmp) 2>/dev/null ||
3454         die "Unable to create temporary file in $TMPDIR."
3455     append TMPFILES $tmp
3456     eval $1=$tmp
3457 }
3458
3459 trap 'rm -f -- $TMPFILES' EXIT
3460
3461 tmpfile TMPASM .asm
3462 tmpfile TMPC   .c
3463 tmpfile TMPCPP .cpp
3464 tmpfile TMPE   $EXESUF
3465 tmpfile TMPH   .h
3466 tmpfile TMPM   .m
3467 tmpfile TMPO   .o
3468 tmpfile TMPS   .S
3469 tmpfile TMPSH  .sh
3470 tmpfile TMPV   .ver
3471
3472 unset -f mktemp
3473
3474 chmod +x $TMPE
3475
3476 # make sure we can execute files in $TMPDIR
3477 cat > $TMPSH 2>> $logfile <<EOF
3478 #! /bin/sh
3479 EOF
3480 chmod +x $TMPSH >> $logfile 2>&1
3481 if ! $TMPSH >> $logfile 2>&1; then
3482     cat <<EOF
3483 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3484 variable to another directory and make sure that it is not mounted noexec.
3485 EOF
3486     die "Sanity test failed."
3487 fi
3488
3489 armasm_flags(){
3490     for flag; do
3491         case $flag in
3492             # Filter out MSVC cl.exe options from cflags that shouldn't
3493             # be passed to gas-preprocessor
3494             -M[TD]*)                                            ;;
3495             *)                  echo $flag                      ;;
3496         esac
3497    done
3498 }
3499
3500 ccc_flags(){
3501     for flag; do
3502         case $flag in
3503             -std=c99)           echo -c99                       ;;
3504             -mcpu=*)            echo -arch ${flag#*=}           ;;
3505             -mieee)             echo -ieee                      ;;
3506             -O*|-fast)          echo $flag                      ;;
3507             -fno-math-errno)    echo -assume nomath_errno       ;;
3508             -g)                 echo -g3                        ;;
3509             -Wall)              echo -msg_enable level2         ;;
3510             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3511             -Wl,*)              echo $flag                      ;;
3512             -f*|-W*)                                            ;;
3513             *)                  echo $flag                      ;;
3514         esac
3515    done
3516 }
3517
3518 cparser_flags(){
3519     for flag; do
3520         case $flag in
3521             -Wno-switch)             echo -Wno-switch-enum ;;
3522             -Wno-format-zero-length) ;;
3523             -Wdisabled-optimization) ;;
3524             -Wno-pointer-sign)       echo -Wno-other ;;
3525             *)                       echo $flag ;;
3526         esac
3527     done
3528 }
3529
3530 msvc_common_flags(){
3531     for flag; do
3532         case $flag in
3533             # In addition to specifying certain flags under the compiler
3534             # specific filters, they must be specified here as well or else the
3535             # generic catch all at the bottom will print the original flag.
3536             -Wall)                ;;
3537             -std=c99)             ;;
3538             # Common flags
3539             -fomit-frame-pointer) ;;
3540             -g)                   echo -Z7 ;;
3541             -fno-math-errno)      ;;
3542             -fno-common)          ;;
3543             -fno-signed-zeros)    ;;
3544             -fPIC)                ;;
3545             -mthumb)              ;;
3546             -march=*)             ;;
3547             -lz)                  echo zlib.lib ;;
3548             -lavifil32)           echo vfw32.lib ;;
3549             -lavicap32)           echo vfw32.lib user32.lib ;;
3550             -l*)                  echo ${flag#-l}.lib ;;
3551             -LARGEADDRESSAWARE)   echo $flag ;;
3552             -L*)                  echo -libpath:${flag#-L} ;;
3553             *)                    echo $flag ;;
3554         esac
3555     done
3556 }
3557
3558 msvc_flags(){
3559     msvc_common_flags "$@"
3560     for flag; do
3561         case $flag in
3562             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3563                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3564                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3565                                        -wd4307 \
3566                                        -wd4273 -wd4554 -wd4701 ;;
3567         esac
3568     done
3569 }
3570
3571 icl_flags(){
3572     msvc_common_flags "$@"
3573     for flag; do
3574         case $flag in
3575             # Despite what Intel's documentation says -Wall, which is supported
3576             # on Windows, does enable remarks so disable them here.
3577             -Wall)                echo $flag -Qdiag-disable:remark ;;
3578             -std=c99)             echo -Qstd=c99 ;;
3579             -flto)                echo -ipo ;;
3580         esac
3581     done
3582 }
3583
3584 icc_flags(){
3585     for flag; do
3586         case $flag in
3587             -flto)                echo -ipo ;;
3588             *)                    echo $flag ;;
3589         esac
3590     done
3591 }
3592
3593 pgi_flags(){
3594     for flag; do
3595         case $flag in
3596             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3597             -fomit-frame-pointer) echo -Mnoframe ;;
3598             -g)                   echo -gopt ;;
3599             *)                    echo $flag ;;
3600         esac
3601     done
3602 }
3603
3604 suncc_flags(){
3605     for flag; do
3606         case $flag in
3607             -march=*|-mcpu=*)
3608                 case "${flag#*=}" in
3609                     native)                   echo -xtarget=native       ;;
3610                     v9|niagara)               echo -xarch=sparc          ;;
3611                     ultrasparc)               echo -xarch=sparcvis       ;;
3612                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3613                     i586|pentium)             echo -xchip=pentium        ;;
3614                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3615                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3616                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3617                     pentium4*)          echo -xtarget=pentium4           ;;
3618                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3619                     *-sse3)             echo -xarch=sse3                 ;;
3620                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3621                     bonnell)                   echo -xarch=ssse3         ;;
3622                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3623                     westmere)                  echo -xtarget=westmere    ;;
3624                     silvermont)                echo -xarch=sse4_2        ;;
3625                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3626                     core-avx*|ivybridge|haswell|broadwell)
3627                                                echo -xarch=avx           ;;
3628                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3629                     btver1)                    echo -xarch=amdsse4a      ;;
3630                     btver2|bdver*)             echo -xarch=avx           ;;
3631                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3632                     k8|opteron|athlon64|athlon-fx)
3633                                                echo -xarch=sse2a         ;;
3634                     athlon*)                   echo -xarch=pentium_proa  ;;
3635                 esac
3636                 ;;
3637             -std=c99)             echo -xc99              ;;
3638             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3639             -fPIC)                echo -KPIC -xcode=pic32 ;;
3640             -W*,*)                echo $flag              ;;
3641             -f*-*|-W*|-mimpure-text)                      ;;
3642             -shared)              echo -G                 ;;
3643             *)                    echo $flag              ;;
3644         esac
3645     done
3646 }
3647
3648 tms470_flags(){
3649     for flag; do
3650         case $flag in
3651             -march=*|-mcpu=*)
3652                 case "${flag#*=}" in
3653                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3654                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3655                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3656                     armv6*|arm11*)          echo -mv=6   ;;
3657                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3658                                             echo -mv=5e  ;;
3659                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3660                 esac
3661                 ;;
3662             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3663             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3664             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3665             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3666             -msoft-float)   echo --float_support=vfplib       ;;
3667             -O[0-3]|-mf=*)  echo $flag                        ;;
3668             -g)             echo -g -mn                       ;;
3669             -pds=*)         echo $flag                        ;;
3670             -D*|-I*)        echo $flag                        ;;
3671             --gcc|--abi=*)  echo $flag                        ;;
3672             -me)            echo $flag                        ;;
3673         esac
3674     done
3675 }
3676
3677 probe_cc(){
3678     pfx=$1
3679     _cc=$2
3680     first=$3
3681
3682     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3683     unset _ld_o _ldflags _ld_lib _ld_path
3684     unset _depflags _DEPCMD _DEPFLAGS
3685     _flags_filter=echo
3686
3687     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3688         true # no-op to avoid reading stdin in following checks
3689     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3690         _type=llvm_gcc
3691         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3692         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3693         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3694         _cflags_speed='-O3'
3695         _cflags_size='-Os'
3696     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3697         _type=gcc
3698         gcc_version=$($_cc --version | head -n1)
3699         gcc_basever=$($_cc -dumpversion)
3700         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3701         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3702         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3703         case $gcc_basever in
3704             2) ;;
3705             2.*) ;;
3706             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3707         esac
3708         if [ "$first" = true ]; then
3709             case $gcc_basever in
3710                 4.2*)
3711                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3712             esac
3713         fi
3714         _cflags_speed='-O3'
3715         _cflags_size='-Os'
3716     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3717         _type=icc
3718         _ident=$($_cc --version | head -n1)
3719         _depflags='-MMD'
3720         _cflags_speed='-O3'
3721         _cflags_size='-Os'
3722         _cflags_noopt='-O1'
3723         _flags_filter=icc_flags
3724     elif $_cc -v 2>&1 | grep -q xlc; then
3725         _type=xlc
3726         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3727         _cflags_speed='-O5'
3728         _cflags_size='-O5 -qcompact'
3729     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3730         _type=ccc
3731         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3732         _DEPFLAGS='-M'
3733         _cflags_speed='-fast'
3734         _cflags_size='-O1'
3735         _flags_filter=ccc_flags
3736     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3737         test -d "$sysroot" || die "No valid sysroot specified."
3738         _type=armcc
3739         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3740         armcc_conf="$PWD/armcc.conf"
3741         $_cc --arm_linux_configure                 \
3742              --arm_linux_config_file="$armcc_conf" \
3743              --configure_sysroot="$sysroot"        \
3744              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3745              die "Error creating armcc configuration file."
3746         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3747         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3748         as_default="${cross_prefix}gcc"
3749         _depflags='-MMD'
3750         _cflags_speed='-O3'
3751         _cflags_size='-Os'
3752     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3753         _type=tms470
3754         _ident=$($_cc -version | head -n1 | tr -s ' ')
3755         _flags='--gcc --abi=eabi -me'
3756         _cc_e='-ppl -fe=$@'
3757         _cc_o='-fe=$@'
3758         _depflags='-ppa -ppd=$(@:.o=.d)'
3759         _cflags_speed='-O3 -mf=5'
3760         _cflags_size='-O3 -mf=2'
3761         _flags_filter=tms470_flags
3762     elif $_cc -v 2>&1 | grep -q clang; then
3763         _type=clang
3764         _ident=$($_cc --version 2>/dev/null | head -n1)
3765         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3766         _cflags_speed='-O3'
3767         _cflags_size='-Os'
3768     elif $_cc -V 2>&1 | grep -q Sun; then
3769         _type=suncc
3770         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3771         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3772         _DEPFLAGS='-xM1 -xc99'
3773         _ldflags='-std=c99'
3774         _cflags_speed='-O5'
3775         _cflags_size='-O5 -xspace'
3776         _flags_filter=suncc_flags
3777     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3778         _type=pathscale
3779         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3780         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3781         _cflags_speed='-O2'
3782         _cflags_size='-Os'
3783         _flags_filter='filter_out -Wdisabled-optimization'
3784     elif $_cc -v 2>&1 | grep -q Open64; then
3785         _type=open64
3786         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3787         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3788         _cflags_speed='-O2'
3789         _cflags_size='-Os'
3790         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3791     elif $_cc -V 2>&1 | grep -q Portland; then
3792         _type=pgi
3793         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3794         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3795         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3796         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3797         _cflags_noopt="-O"
3798         _flags_filter=pgi_flags
3799     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3800         _type=armasm
3801         _ident=$($_cc | head -n1)
3802         # 4509: "This form of conditional instruction is deprecated"
3803         _flags="-nologo -ignore 4509"
3804         _flags_filter=armasm_flags
3805     elif $_cc 2>&1 | grep -q Intel; then
3806         _type=icl
3807         _ident=$($_cc 2>&1 | head -n1)
3808         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3809         # Not only is O3 broken on 13.x+ but it is slower on all previous
3810         # versions (tested) as well.
3811         _cflags_speed="-O2"
3812         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3813         if $_cc 2>&1 | grep -q Linker; then
3814             _ld_o='-out:$@'
3815         else
3816             _ld_o='-Fe$@'
3817         fi
3818         _cc_o='-Fo$@'
3819         _cc_e='-P'
3820         _flags_filter=icl_flags
3821         _ld_lib='lib%.a'
3822         _ld_path='-libpath:'
3823         # -Qdiag-error to make icl error when seeing certain unknown arguments
3824         _flags='-nologo -Qdiag-error:4044,10157'
3825         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3826         # with MSVC which enables it by default.
3827         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3828         disable stripping
3829     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3830         _type=msvc
3831         _ident=$($_cc 2>&1 | head -n1)
3832         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3833         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3834         _cflags_speed="-O2"
3835         _cflags_size="-O1"
3836         if $_cc -nologo- 2>&1 | grep -q Linker; then
3837             _ld_o='-out:$@'
3838         else
3839             _ld_o='-Fe$@'
3840         fi
3841         _cc_o='-Fo$@'
3842         _cc_e='-P -Fi$@'
3843         _flags_filter=msvc_flags
3844         _ld_lib='lib%.a'
3845         _ld_path='-libpath:'
3846         _flags='-nologo'
3847         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3848         disable stripping
3849     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3850         _type=cparser
3851         _ident=$($_cc --version | head -n1)
3852         _depflags='-MMD'
3853         _cflags_speed='-O4'
3854         _cflags_size='-O2'
3855         _flags_filter=cparser_flags
3856     fi
3857
3858     eval ${pfx}_type=\$_type
3859     eval ${pfx}_ident=\$_ident
3860 }
3861
3862 set_ccvars(){
3863     eval ${1}_C=\${_cc_c-\${${1}_C}}
3864     eval ${1}_E=\${_cc_e-\${${1}_E}}
3865     eval ${1}_O=\${_cc_o-\${${1}_O}}
3866
3867     if [ -n "$_depflags" ]; then
3868         eval ${1}_DEPFLAGS=\$_depflags
3869     else
3870         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3871         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3872         eval DEP${1}FLAGS=\$_flags
3873     fi
3874 }
3875
3876 probe_cc cc "$cc" "true"
3877 cflags_filter=$_flags_filter
3878 cflags_speed=$_cflags_speed
3879 cflags_size=$_cflags_size
3880 cflags_noopt=$_cflags_noopt
3881 add_cflags $_flags $_cflags
3882 cc_ldflags=$_ldflags
3883 set_ccvars CC
3884
3885 probe_cc hostcc "$host_cc"
3886 host_cflags_filter=$_flags_filter
3887 add_host_cflags  $_flags $_cflags
3888 set_ccvars HOSTCC
3889
3890 test -n "$cc_type" && enable $cc_type ||
3891     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3892
3893 : ${as_default:=$cc}
3894 : ${objcc_default:=$cc}
3895 : ${dep_cc_default:=$cc}
3896 : ${ld_default:=$cc}
3897 : ${host_ld_default:=$host_cc}
3898 set_default ar as objcc dep_cc ld host_ld windres
3899
3900 probe_cc as "$as"
3901 asflags_filter=$_flags_filter
3902 add_asflags $_flags $_cflags
3903 set_ccvars AS
3904
3905 probe_cc objcc "$objcc"
3906 objcflags_filter=$_flags_filter
3907 add_objcflags $_flags $_cflags
3908 set_ccvars OBJC
3909
3910 probe_cc ld "$ld"
3911 ldflags_filter=$_flags_filter
3912 add_ldflags $_flags $_ldflags
3913 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3914 LD_O=${_ld_o-$LD_O}
3915 LD_LIB=${_ld_lib-$LD_LIB}
3916 LD_PATH=${_ld_path-$LD_PATH}
3917
3918 probe_cc hostld "$host_ld"
3919 host_ldflags_filter=$_flags_filter
3920 add_host_ldflags $_flags $_ldflags
3921 HOSTLD_O=${_ld_o-$HOSTLD_O}
3922
3923 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3924     probe_cc depcc "$dep_cc"
3925     CCDEP=${_DEPCMD:-$DEPCMD}
3926     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3927     DEPCCFLAGS=$_flags
3928 fi
3929
3930 if $ar 2>&1 | grep -q Microsoft; then
3931     arflags="-nologo"
3932     ar_o='-out:$@'
3933 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3934     arflags="rq"
3935     ar_o='$@'
3936 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3937     arflags='-Xany -r -c'
3938     ar_o='$@'
3939 elif $ar 2>&1 | grep -q "\[D\] "; then
3940     arflags="rcD"
3941     ar_o='$@'
3942 else
3943     arflags="rc"
3944     ar_o='$@'
3945 fi
3946
3947 add_cflags $extra_cflags
3948 add_cxxflags $extra_cxxflags
3949 add_objcflags $extra_objcflags
3950 add_asflags $extra_cflags
3951
3952 if test -n "$sysroot"; then
3953     case "$cc_type" in
3954         gcc|llvm_gcc|clang)
3955             add_cppflags --sysroot="$sysroot"
3956             add_ldflags --sysroot="$sysroot"
3957 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3958             add_cppflags -isysroot "$sysroot"
3959             add_ldflags -isysroot "$sysroot"
3960         ;;
3961         tms470)
3962             add_cppflags -I"$sysinclude"
3963             add_ldflags  --sysroot="$sysroot"
3964         ;;
3965     esac
3966 fi
3967
3968 if test "$cpu" = host; then
3969     enabled cross_compile &&
3970         die "--cpu=host makes no sense when cross-compiling."
3971
3972     case "$cc_type" in
3973         gcc|llvm_gcc)
3974             check_native(){
3975                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3976                 sed -n "/cc1.*$1=/{
3977                             s/.*$1=\\([^ ]*\\).*/\\1/
3978                             p
3979                             q
3980                         }" $TMPE
3981             }
3982             cpu=$(check_native -march || check_native -mcpu)
3983         ;;
3984         clang)
3985             check_native(){
3986                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3987                 sed -n "/cc1.*-target-cpu /{
3988                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3989                             p
3990                             q
3991                         }" $TMPE
3992             }
3993             cpu=$(check_native -march)
3994         ;;
3995     esac
3996
3997     test "${cpu:-host}" = host &&
3998         die "--cpu=host not supported with compiler $cc"
3999 fi
4000
4001 # Deal with common $arch aliases
4002 case "$arch" in
4003     aarch64|arm64)
4004         arch="aarch64"
4005     ;;
4006     arm*|iPad*|iPhone*)
4007         arch="arm"
4008     ;;
4009     mips*|IP*)
4010         case "$arch" in
4011         *el)
4012             add_cppflags -EL
4013             add_ldflags -EL
4014         ;;
4015         *eb)
4016             add_cppflags -EB
4017             add_ldflags -EB
4018         ;;
4019         esac
4020         arch="mips"
4021     ;;
4022     parisc*|hppa*)
4023         arch="parisc"
4024     ;;
4025     "Power Macintosh"|ppc*|powerpc*)
4026         arch="ppc"
4027     ;;
4028     s390|s390x)
4029         arch="s390"
4030     ;;
4031     sh4|sh)
4032         arch="sh4"
4033     ;;
4034     sun4u|sparc*)
4035         arch="sparc"
4036     ;;
4037     tilegx|tile-gx)
4038         arch="tilegx"
4039     ;;
4040     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4041         arch="x86"
4042     ;;
4043 esac
4044
4045 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4046 enable $arch
4047
4048 # Add processor-specific flags
4049 if enabled aarch64; then
4050
4051     case $cpu in
4052         armv*)
4053             cpuflags="-march=$cpu"
4054         ;;
4055         *)
4056             cpuflags="-mcpu=$cpu"
4057         ;;
4058     esac
4059
4060 elif enabled alpha; then
4061
4062     cpuflags="-mcpu=$cpu"
4063
4064 elif enabled arm; then
4065
4066     check_arm_arch() {
4067         check_cpp_condition stddef.h \
4068             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4069             $cpuflags
4070     }
4071
4072     probe_arm_arch() {
4073         if   check_arm_arch 4;        then echo armv4;
4074         elif check_arm_arch 4T;       then echo armv4t;
4075         elif check_arm_arch 5;        then echo armv5;
4076         elif check_arm_arch 5E;       then echo armv5e;
4077         elif check_arm_arch 5T;       then echo armv5t;
4078         elif check_arm_arch 5TE;      then echo armv5te;
4079         elif check_arm_arch 5TEJ;     then echo armv5te;
4080         elif check_arm_arch 6;        then echo armv6;
4081         elif check_arm_arch 6J;       then echo armv6j;
4082         elif check_arm_arch 6K;       then echo armv6k;
4083         elif check_arm_arch 6Z;       then echo armv6z;
4084         elif check_arm_arch 6ZK;      then echo armv6zk;
4085         elif check_arm_arch 6T2;      then echo armv6t2;
4086         elif check_arm_arch 7;        then echo armv7;
4087         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4088         elif check_arm_arch 7S;       then echo armv7-a;
4089         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4090         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4091         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4092         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4093         fi
4094     }
4095
4096     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4097
4098     case $cpu in
4099         armv*)
4100             cpuflags="-march=$cpu"
4101             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4102         ;;
4103         *)
4104             cpuflags="-mcpu=$cpu"
4105             case $cpu in
4106                 cortex-a*)                               subarch=armv7a  ;;
4107                 cortex-r*)                               subarch=armv7r  ;;
4108                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4109                 arm11*)                                  subarch=armv6   ;;
4110                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4111                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4112                 *)                             subarch=$(probe_arm_arch) ;;
4113             esac
4114         ;;
4115     esac
4116
4117     case "$subarch" in
4118         armv5t*)    enable fast_clz                ;;
4119         armv[6-8]*)
4120             enable fast_clz
4121             disabled fast_unaligned || enable fast_unaligned
4122             ;;
4123     esac
4124
4125 elif enabled avr32; then
4126
4127     case $cpu in
4128         ap7[02]0[0-2])
4129             subarch="avr32_ap"
4130             cpuflags="-mpart=$cpu"
4131         ;;
4132         ap)
4133             subarch="avr32_ap"
4134             cpuflags="-march=$cpu"
4135         ;;
4136         uc3[ab]*)
4137             subarch="avr32_uc"
4138             cpuflags="-mcpu=$cpu"
4139         ;;
4140         uc)
4141             subarch="avr32_uc"
4142             cpuflags="-march=$cpu"
4143         ;;
4144     esac
4145
4146 elif enabled bfin; then
4147
4148     cpuflags="-mcpu=$cpu"
4149
4150 elif enabled mips; then
4151
4152     cpuflags="-march=$cpu"
4153
4154     case $cpu in
4155         24kc)
4156             disable mips32r6
4157             disable mips64r2
4158             disable mips64r6
4159             disable mipsfpu
4160             disable mipsdsp
4161             disable mipsdspr2
4162             disable msa
4163         ;;
4164         24kf*)
4165             disable mips32r6
4166             disable mips64r2
4167             disable mips64r6
4168             disable mipsdsp
4169             disable mipsdspr2
4170             disable msa
4171         ;;
4172         24kec|34kc|1004kc)
4173             disable mips32r6
4174             disable mips64r2
4175             disable mips64r6
4176             disable mipsfpu
4177             disable mipsdspr2
4178             disable msa
4179         ;;
4180         24kef*|34kf*|1004kf*)
4181             disable mips32r6
4182             disable mips64r2
4183             disable mips64r6
4184             disable mipsdspr2
4185             disable msa
4186         ;;
4187         74kc)
4188             disable mips32r6
4189             disable mips64r2
4190             disable mips64r6
4191             disable mipsfpu
4192             disable msa
4193         ;;
4194         74kf)
4195             disable mips32r6
4196             disable mips64r2
4197             disable mips64r6
4198             disable msa
4199         ;;
4200         p5600)
4201             disable mips32r6
4202             disable mips64r2
4203             disable mips64r6
4204             disable mipsdsp
4205             disable mipsdspr2
4206             check_cflags "-mtune=p5600" &&
4207             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4208             add_asflags "-mfp64"
4209         ;;
4210         i6400)
4211             disable mips32r2
4212             disable mips32r6
4213             disable mips64r2
4214             disable mipsdsp
4215             disable mipsdspr2
4216             check_cflags "-mtune=i6400 -mabi=64" &&
4217             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4218             check_ldflags "-mabi=64" &&
4219             add_asflags "-mfp64"
4220         ;;
4221         loongson*)
4222             disable mips32r2
4223             disable mips32r6
4224             disable mips64r2
4225             disable mips64r6
4226             disable mipsfpu
4227             disable mipsdsp
4228             disable mipsdspr2
4229             disable msa
4230             enable local_aligned_8 local_aligned_16 local_aligned_32
4231             enable simd_align_16
4232             enable fast_64bit
4233             enable fast_clz
4234             enable fast_cmov
4235             enable fast_unaligned
4236             disable aligned_stack
4237             case $cpu in
4238                 loongson3*)
4239                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4240                 ;;
4241                 loongson2e)
4242                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4243                 ;;
4244                 loongson2f)
4245                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4246                 ;;
4247             esac
4248         ;;
4249         generic)
4250             disable mips64r6
4251             disable msa
4252         ;;
4253         *)
4254             # Unknown CPU. Disable everything.
4255             warn "unknown CPU. Disabling all MIPS optimizations."
4256             disable mipsfpu
4257             disable mips32r2
4258             disable mips32r6
4259             disable mips64r2
4260             disable mips64r6
4261             disable mipsdsp
4262             disable mipsdspr2
4263             disable msa
4264         ;;
4265     esac
4266
4267 elif enabled ppc; then
4268
4269     disable ldbrx
4270
4271     case $(tolower $cpu) in
4272         601|ppc601|powerpc601)
4273             cpuflags="-mcpu=601"
4274             disable altivec
4275         ;;
4276         603*|ppc603*|powerpc603*)
4277             cpuflags="-mcpu=603"
4278             disable altivec
4279         ;;
4280         604*|ppc604*|powerpc604*)
4281             cpuflags="-mcpu=604"
4282             disable altivec
4283         ;;
4284         g3|75*|ppc75*|powerpc75*)
4285             cpuflags="-mcpu=750"
4286             disable altivec
4287         ;;
4288         g4|745*|ppc745*|powerpc745*)
4289             cpuflags="-mcpu=7450"
4290             disable vsx
4291         ;;
4292         74*|ppc74*|powerpc74*)
4293             cpuflags="-mcpu=7400"
4294             disable vsx
4295         ;;
4296         g5|970|ppc970|powerpc970)
4297             cpuflags="-mcpu=970"
4298             disable vsx
4299         ;;
4300         power[3-6]*)
4301             cpuflags="-mcpu=$cpu"
4302             disable vsx
4303         ;;
4304         power[7-8]*)
4305             cpuflags="-mcpu=$cpu"
4306         ;;
4307         cell)
4308             cpuflags="-mcpu=cell"
4309             enable ldbrx
4310             disable vsx
4311         ;;
4312         e500mc)
4313             cpuflags="-mcpu=e500mc"
4314             disable altivec
4315         ;;
4316         e500v2)
4317             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4318             disable altivec
4319             disable dcbzl
4320         ;;
4321         e500)
4322             cpuflags="-mcpu=8540 -mhard-float"
4323             disable altivec
4324             disable dcbzl
4325         ;;
4326     esac
4327
4328 elif enabled sparc; then
4329
4330     case $cpu in
4331         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4332             cpuflags="-mcpu=$cpu"
4333         ;;
4334         ultrasparc*|niagara[234])
4335             cpuflags="-mcpu=$cpu"
4336         ;;
4337     esac
4338
4339 elif enabled x86; then
4340
4341     case $cpu in
4342         i[345]86|pentium)
4343             cpuflags="-march=$cpu"
4344             disable i686
4345             disable mmx
4346         ;;
4347         # targets that do NOT support nopl and conditional mov (cmov)
4348         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4349             cpuflags="-march=$cpu"
4350             disable i686
4351         ;;
4352         # targets that do support nopl and conditional mov (cmov)
4353         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4354         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4355             cpuflags="-march=$cpu"
4356             enable i686
4357             enable fast_cmov
4358         ;;
4359         # targets that do support conditional mov but on which it's slow
4360         pentium4|pentium4m|prescott|nocona)
4361             cpuflags="-march=$cpu"
4362             enable i686
4363             disable fast_cmov
4364         ;;
4365     esac
4366
4367 fi
4368
4369 if [ "$cpu" != generic ]; then
4370     add_cflags  $cpuflags
4371     add_asflags $cpuflags
4372     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4373 fi
4374
4375 # compiler sanity check
4376 check_exec <<EOF
4377 int main(void){ return 0; }
4378 EOF
4379 if test "$?" != 0; then
4380     echo "$cc is unable to create an executable file."
4381     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4382         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4383         echo "Only do this if you know what cross compiling means."
4384     fi
4385     die "C compiler test failed."
4386 fi
4387
4388 add_cppflags -D_ISOC99_SOURCE
4389 add_cxxflags -D__STDC_CONSTANT_MACROS
4390 check_cflags -std=c99
4391 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4392 #include <stdlib.h>
4393 EOF
4394 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4395 #include <stdlib.h>
4396 EOF
4397
4398 add_host_cppflags -D_ISOC99_SOURCE
4399 check_host_cflags -std=c99
4400 check_host_cflags -Wall
4401 check_host_cflags -O3
4402
4403 check_64bit(){
4404     arch32=$1
4405     arch64=$2
4406     expr=$3
4407     check_code cc "" "int test[2*($expr) - 1]" &&
4408         subarch=$arch64 || subarch=$arch32
4409 }
4410
4411 case "$arch" in
4412     aarch64|alpha|ia64)
4413         spic=$shared
4414     ;;
4415     mips)
4416         check_64bit mips mips64 '_MIPS_SIM > 1'
4417         spic=$shared
4418     ;;
4419     parisc)
4420         check_64bit parisc parisc64 'sizeof(void *) > 4'
4421         spic=$shared
4422     ;;
4423     ppc)
4424         check_64bit ppc ppc64 'sizeof(void *) > 4'
4425         spic=$shared
4426     ;;
4427     s390)
4428         check_64bit s390 s390x 'sizeof(void *) > 4'
4429         spic=$shared
4430     ;;
4431     sparc)
4432         check_64bit sparc sparc64 'sizeof(void *) > 4'
4433         spic=$shared
4434     ;;
4435     x86)
4436         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4437         # Treat x32 as x64 for now. Note it also needs spic=$shared
4438         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4439             subarch=x86_64
4440         if test "$subarch" = "x86_64"; then
4441             spic=$shared
4442         fi
4443     ;;
4444     ppc)
4445         check_cc <<EOF && subarch="ppc64"
4446         int test[(int)sizeof(char*) - 7];
4447 EOF
4448     ;;
4449 esac
4450
4451 enable $subarch
4452 enabled spic && enable_weak pic
4453
4454 # OS specific
4455 case $target_os in
4456     aix)
4457         SHFLAGS=-shared
4458         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4459         enabled shared && add_ldflags -Wl,-brtl
4460         ;;
4461     android)
4462         disable symver
4463         enable section_data_rel_ro
4464         SLIB_INSTALL_NAME='$(SLIBNAME)'
4465         SLIB_INSTALL_LINKS=
4466         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4467         ;;
4468     haiku)
4469         prefix_default="/boot/common"
4470         network_extralibs="-lnetwork"
4471         host_libs=
4472         ;;
4473     sunos)
4474         SHFLAGS='-shared -Wl,-h,$$(@F)'
4475         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4476         network_extralibs="-lsocket -lnsl"
4477         add_cppflags -D__EXTENSIONS__
4478         # When using suncc to build, the Solaris linker will mark
4479         # an executable with each instruction set encountered by
4480         # the Solaris assembler.  As our libraries contain their own
4481         # guards for processor-specific code, instead suppress
4482         # generation of the HWCAPS ELF section on Solaris x86 only.
4483         enabled_all suncc x86 &&
4484             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4485             add_ldflags -Wl,-M,mapfile
4486         nm_default='nm -P -g'
4487         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4488         ;;
4489     netbsd)
4490         disable symver
4491         oss_indev_extralibs="-lossaudio"
4492         oss_outdev_extralibs="-lossaudio"
4493         enabled gcc || check_ldflags -Wl,-zmuldefs
4494         ;;
4495     openbsd|bitrig)
4496         disable symver
4497         SHFLAGS='-shared'
4498         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4499         SLIB_INSTALL_LINKS=
4500         oss_indev_extralibs="-lossaudio"
4501         oss_outdev_extralibs="-lossaudio"
4502         ;;
4503     dragonfly)
4504         disable symver
4505         ;;
4506     freebsd)
4507         ;;
4508     bsd/os)
4509         add_extralibs -lpoll -lgnugetopt
4510         strip="strip -d"
4511         ;;
4512     darwin)
4513         enabled ppc && add_asflags -force_cpusubtype_ALL
4514         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4515         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4516         strip="${strip} -x"
4517         add_ldflags -Wl,-dynamic,-search_paths_first
4518         SLIBSUF=".dylib"
4519         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4520         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4521         objformat="macho"
4522         enabled x86_64 && objformat="macho64"
4523         enabled_any pic shared x86_64 ||
4524             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4525         ;;
4526     msys*)
4527         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4528         ;;
4529     mingw32*|mingw64*)
4530         if test $target_os = "mingw32ce"; then
4531             disable network
4532         else
4533             target_os=mingw32
4534         fi
4535         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4536         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4537         LIBTARGET=i386
4538         if enabled x86_64; then
4539             LIBTARGET="i386:x86-64"
4540         elif enabled arm; then
4541             LIBTARGET=arm-wince
4542         fi
4543         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4544         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4545         shlibdir_default="$bindir_default"
4546         SLIBPREF=""
4547         SLIBSUF=".dll"
4548         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4549         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4550         dlltool="${cross_prefix}dlltool"
4551         if check_cmd lib.exe -list; then
4552             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4553             if enabled x86_64; then
4554                 LIBTARGET=x64
4555             fi
4556         elif check_cmd $dlltool --version; then
4557             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4558         fi
4559         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4560         SLIB_INSTALL_LINKS=
4561         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4562         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4563         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4564         objformat="win32"
4565         ranlib=:
4566         enable dos_paths
4567         check_ldflags -Wl,--nxcompat,--dynamicbase
4568         # Lets work around some stupidity in binutils.
4569         # ld will strip relocations from executables even though we need them
4570         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4571         # however ld then forgets what the entry point should be (oops) so we
4572         # have to manually (re)set it.
4573         if enabled x86_32; then
4574             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4575         elif enabled x86_64; then
4576             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4577             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4578             # Set image base >4GB for extra entropy with HEASLR
4579             add_ldexeflags -Wl,--image-base,0x140000000
4580             append SHFLAGS -Wl,--image-base,0x180000000
4581         fi
4582         ;;
4583     win32|win64)
4584         disable symver
4585         if enabled shared; then
4586             # Link to the import library instead of the normal static library
4587             # for shared libs.
4588             LD_LIB='%.lib'
4589             # Cannot build both shared and static libs with MSVC or icl.
4590             disable static
4591         fi
4592         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4593         shlibdir_default="$bindir_default"
4594         SLIBPREF=""
4595         SLIBSUF=".dll"
4596         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4597         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4598         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4599         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4600         SLIB_INSTALL_LINKS=
4601         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4602         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4603         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4604         objformat="win32"
4605         ranlib=:
4606         enable dos_paths
4607         ;;
4608     cygwin*)
4609         target_os=cygwin
4610         shlibdir_default="$bindir_default"
4611         SLIBPREF="cyg"
4612         SLIBSUF=".dll"
4613         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4614         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4615         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4616         SLIB_INSTALL_LINKS=
4617         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4618         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4619         objformat="win32"
4620         enable dos_paths
4621         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4622         ;;
4623     *-dos|freedos|opendos)
4624         network_extralibs="-lsocket"
4625         objformat="coff"
4626         enable dos_paths
4627         add_cppflags -U__STRICT_ANSI__
4628         ;;
4629     linux)
4630         enable dv1394
4631         enable section_data_rel_ro
4632         ;;
4633     irix*)
4634         target_os=irix
4635         ranlib="echo ignoring ranlib"
4636         ;;
4637     os/2*)
4638         strip="lxlite -CS"
4639         ln_s="cp -f"
4640         objformat="aout"
4641         add_cppflags -D_GNU_SOURCE
4642         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4643         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4644         LIBSUF="_s.a"
4645         SLIBPREF=""
4646         SLIBSUF=".dll"
4647         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4648         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4649         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4650             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4651             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4652             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4653             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4654         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4655             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4656         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4657         enable dos_paths
4658         enable_weak os2threads
4659         ;;
4660     gnu/kfreebsd)
4661         add_cppflags -D_BSD_SOURCE
4662         ;;
4663     gnu)
4664         ;;
4665     qnx)
4666         add_cppflags -D_QNX_SOURCE
4667         network_extralibs="-lsocket"
4668         ;;
4669     symbian)
4670         SLIBSUF=".dll"
4671         enable dos_paths
4672         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4673         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4674         add_ldflags -Wl,--target1-abs,--no-undefined \
4675                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4676                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4677         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4678                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4679                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4680         ;;
4681     osf1)
4682         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4683         ;;
4684     minix)
4685         ;;
4686     plan9)
4687         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4688                      -D_REENTRANT_SOURCE        \
4689                      -D_RESEARCH_SOURCE         \
4690                      -DFD_SETSIZE=96            \
4691                      -DHAVE_SOCK_OPTS
4692         add_compat strtod.o strtod=avpriv_strtod
4693         network_extralibs='-lbsd'
4694         exeobjs=compat/plan9/main.o
4695         disable ffserver
4696         cp_f='cp'
4697         ;;
4698     none)
4699         ;;
4700     *)
4701         die "Unknown OS '$target_os'."
4702         ;;
4703 esac
4704
4705 # test if creating links works
4706 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4707 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4708 mkdir "$link_dest"
4709 $ln_s "$link_dest" "$link_name"
4710 touch "$link_dest/test_file"
4711 if [ -e "$link_name/test_file" ]; then
4712     # create link to source path
4713     [ -e src ] && rm src
4714     $ln_s "$source_path" src
4715     source_link=src
4716 else
4717     # creating directory links doesn't work
4718     # fall back to using the full source path
4719     source_link="$source_path"
4720 fi
4721 # cleanup
4722 rm -r "$link_dest"
4723 rm -r "$link_name"
4724
4725 # determine libc flavour
4726
4727 probe_libc(){
4728     pfx=$1
4729     pfx_no_=${pfx%_}
4730     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4731     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4732         eval ${pfx}libc_type=uclibc
4733         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4734     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4735         eval ${pfx}libc_type=glibc
4736         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4737     # MinGW headers can be installed on Cygwin, so check for newlib first.
4738     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4739         eval ${pfx}libc_type=newlib
4740         add_${pfx}cppflags -U__STRICT_ANSI__
4741     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4742     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4743         eval ${pfx}libc_type=mingw64
4744         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4745             add_compat msvcrt/snprintf.o
4746             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4747         fi
4748         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4749         eval test \$${pfx_no_}cc_type = "gcc" &&
4750             add_${pfx}cppflags -D__printf__=__gnu_printf__
4751     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4752          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4753         eval ${pfx}libc_type=mingw32
4754         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4755             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4756             die "ERROR: MinGW32 runtime version must be >= 3.15."
4757         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4758         eval test \$${pfx_no_}cc_type = "gcc" &&
4759             add_${pfx}cppflags -D__printf__=__gnu_printf__
4760     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4761         eval ${pfx}libc_type=msvcrt
4762         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4763             if [ "$pfx" = host_ ]; then
4764                 add_host_cppflags -Dsnprintf=_snprintf
4765             else
4766                 add_compat strtod.o strtod=avpriv_strtod
4767                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4768                                              _snprintf=avpriv_snprintf  \
4769                                              vsnprintf=avpriv_vsnprintf
4770             fi
4771         fi
4772         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4773         # 0x601 by default unless something else is set by the user.
4774         # This can easily lead to us detecting functions only present
4775         # in such new versions and producing binaries requiring windows 7.0.
4776         # Therefore explicitly set the default to XP unless the user has
4777         # set something else on the command line.
4778         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4779         # family. For these cases, configure is free to use any functions
4780         # found in the SDK headers by default. (Alternatively, we could force
4781         # _WIN32_WINNT to 0x0602 in that case.)
4782         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4783             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4784 #ifdef WINAPI_FAMILY
4785 #include <winapifamily.h>
4786 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4787 #error not desktop
4788 #endif
4789 #endif
4790 EOF
4791     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4792         eval ${pfx}libc_type=klibc
4793     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4794         eval ${pfx}libc_type=bionic
4795     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4796         eval ${pfx}libc_type=solaris
4797         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4798     fi
4799     check_${pfx}cc <<EOF
4800 #include <time.h>
4801 void *v = localtime_r;
4802 EOF
4803 test "$?" != 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
4804 #include <time.h>
4805 void *v = localtime_r;
4806 EOF
4807
4808 }
4809
4810 probe_libc
4811 test -n "$libc_type" && enable libc_$libc_type
4812 probe_libc host_
4813 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4814
4815 case $libc_type in
4816     bionic)
4817         add_compat strtod.o strtod=avpriv_strtod
4818         ;;
4819 esac
4820
4821 # hacks for compiler/libc/os combinations
4822
4823 if enabled_all tms470 libc_glibc; then
4824     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4825     add_cppflags -D__USER_LABEL_PREFIX__=
4826     add_cppflags -D__builtin_memset=memset
4827     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4828     add_cflags   -pds=48    # incompatible redefinition of macro
4829 fi
4830
4831 if enabled_all ccc libc_glibc; then
4832     add_ldflags -Wl,-z,now  # calls to libots crash without this
4833 fi
4834
4835 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4836     add_cppflags '-I\$(SRC_PATH)/compat/float'
4837
4838 esc(){
4839     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4840 }
4841
4842 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4843
4844 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4845
4846 set_default libdir
4847 : ${shlibdir_default:="$libdir"}
4848 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4849
4850 set_default $PATHS_LIST
4851 set_default nm
4852
4853 # we need to build at least one lib type
4854 if ! enabled_any static shared; then
4855     cat <<EOF
4856 At least one library type must be built.
4857 Specify --enable-static to build the static libraries or --enable-shared to
4858 build the shared libraries as well. To only build the shared libraries specify
4859 --disable-static in addition to --enable-shared.
4860 EOF
4861     exit 1;
4862 fi
4863
4864 die_license_disabled() {
4865     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4866 }
4867
4868 die_license_disabled_gpl() {
4869     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4870 }
4871
4872 die_license_disabled gpl frei0r
4873 die_license_disabled gpl libcdio
4874 die_license_disabled gpl librubberband
4875 die_license_disabled gpl libsmbclient
4876 die_license_disabled gpl libutvideo
4877 die_license_disabled gpl libvidstab
4878 die_license_disabled gpl libx264
4879 die_license_disabled gpl libx265
4880 die_license_disabled gpl libxavs
4881 die_license_disabled gpl libxvid
4882 die_license_disabled gpl x11grab
4883
4884 die_license_disabled nonfree libfaac
4885 die_license_disabled nonfree nvenc
4886 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4887 enabled gpl && die_license_disabled_gpl nonfree openssl
4888
4889 die_license_disabled version3 gmp
4890 die_license_disabled version3 libopencore_amrnb
4891 die_license_disabled version3 libopencore_amrwb
4892 die_license_disabled version3 libsmbclient
4893 die_license_disabled version3 libvo_amrwbenc
4894
4895 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4896
4897 disabled optimizations || check_cflags -fomit-frame-pointer
4898
4899 enable_weak_pic() {
4900     disabled pic && return
4901     enable pic
4902     add_cppflags -DPIC
4903     case "$target_os" in
4904     mingw*|cygwin*)
4905         ;;
4906     *)
4907         add_cflags -fPIC
4908         ;;
4909     esac
4910     add_asflags  -fPIC
4911 }
4912
4913 enabled pic && enable_weak_pic
4914
4915 check_cc <<EOF || die "Symbol mangling check failed."
4916 int ff_extern;
4917 EOF
4918 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4919 extern_prefix=${sym%%ff_extern*}
4920
4921 check_cc <<EOF && enable_weak inline_asm
4922 void foo(void) { __asm__ volatile ("" ::); }
4923 EOF
4924
4925 _restrict=
4926 for restrict_keyword in restrict __restrict__ __restrict; do
4927     check_cc <<EOF && _restrict=$restrict_keyword && break
4928 void foo(char * $restrict_keyword p);
4929 EOF
4930 done
4931
4932 check_cc <<EOF && enable pragma_deprecated
4933 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4934 EOF
4935
4936 check_cc <<EOF && enable attribute_packed
4937 struct { int x; } __attribute__((packed)) x;
4938 EOF
4939
4940 check_cc <<EOF && enable attribute_may_alias
4941 union { int x; } __attribute__((may_alias)) x;
4942 EOF
4943
4944 check_cc <<EOF || die "endian test failed"
4945 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4946 EOF
4947 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4948
4949 if ! enabled ppc64 || enabled bigendian; then
4950     disable vsx
4951 fi
4952
4953 check_gas() {
4954     log "check_gas using '$as' as AS"
4955     # :vararg is used on aarch64, arm and ppc altivec
4956     check_as <<EOF || return 1
4957 .macro m n, y:vararg=0
4958 \n: .int \y
4959 .endm
4960 m x
4961 EOF
4962     # .altmacro is only used in arm asm
4963     ! enabled arm || check_as <<EOF || return 1
4964 .altmacro
4965 EOF
4966     enable gnu_as
4967     return 0
4968 }
4969
4970 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4971     nogas=:
4972     enabled_any arm aarch64 && nogas=die
4973     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4974     as_noop=-v
4975
4976     case $as_type in
4977         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4978         gcc)  gaspp_as_type=gas ;;
4979         *)    gaspp_as_type=$as_type ;;
4980     esac
4981
4982     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4983
4984     test "${as#*gas-preprocessor.pl}" != "$as" ||
4985     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4986         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4987
4988     if ! check_gas ; then
4989         as=${gas:=$as}
4990         check_gas || \
4991             $nogas "GNU assembler not found, install/update gas-preprocessor"
4992     fi
4993
4994     check_as <<EOF && enable as_func
4995 .func test
4996 .endfunc
4997 EOF
4998 fi
4999
5000 check_inline_asm inline_asm_labels '"1:\n"'
5001
5002 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5003
5004 if enabled aarch64; then
5005     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5006     # internal assembler in clang 3.3 does not support this instruction
5007     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5008     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5009
5010     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5011
5012 elif enabled alpha; then
5013
5014     check_cflags -mieee
5015
5016 elif enabled arm; then
5017
5018     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5019
5020     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5021 float func(float a, float b){ return a+b; }
5022 EOF
5023
5024     enabled thumb && check_cflags -mthumb || check_cflags -marm
5025
5026     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5027         enable vfp_args
5028     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5029         enable vfp_args
5030     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5031         case "${cross_prefix:-$cc}" in
5032             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5033             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5034 __asm__ (".eabi_attribute 28, 1");
5035 int main(void) { return 0; }
5036 EOF
5037         esac
5038         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5039     fi
5040
5041     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5042     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5043     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5044     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5045     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5046     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5047     enabled setend  && check_insn setend  'setend be'
5048
5049     [ $target_os = linux ] || [ $target_os = android ] ||
5050         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5051             $ARCH_EXT_LIST_ARM
5052
5053     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5054
5055     check_as <<EOF && enable as_dn_directive
5056 ra .dn d0.i16
5057 .unreq ra
5058 EOF
5059
5060     # llvm's integrated assembler supports .object_arch from llvm 3.5
5061     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5062 .object_arch armv4
5063 EOF
5064
5065     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5066
5067 elif enabled mips; then
5068
5069     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5070     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5071     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5072
5073     # Enable minimum ISA based on selected options
5074     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5075         add_cflags "-mips64r2"
5076         add_asflags "-mips64r2"
5077     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5078         add_cflags "-mips64"
5079         add_asflags "-mips64"
5080     elif enabled mipsdsp || enabled mipsdspr2; then
5081         add_cflags "-mips32r2 -mfp32"
5082         add_asflags "-mips32r2 -mfp32"
5083     fi
5084
5085     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5086      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5087     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5088      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5089     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5090      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5091     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5092      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5093
5094     enabled msa && add_asflags "-mmsa"
5095
5096 elif enabled parisc; then
5097
5098     if enabled gcc; then
5099         case $($cc -dumpversion) in
5100             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5101         esac
5102     fi
5103
5104 elif enabled ppc; then
5105
5106     enable local_aligned_8 local_aligned_16 local_aligned_32
5107
5108     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5109     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5110     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5111     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5112
5113     # AltiVec flags: The FSF version of GCC differs from the Apple version
5114     if enabled altivec; then
5115         check_cflags -maltivec -mabi=altivec &&
5116         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5117         check_cflags -faltivec
5118
5119         # check if our compiler supports Motorola AltiVec C API
5120         check_cc <<EOF || disable altivec
5121 $inc_altivec_h
5122 int main(void) {
5123     vector signed int v1 = (vector signed int) { 0 };
5124     vector signed int v2 = (vector signed int) { 1 };
5125     v1 = vec_add(v1, v2);
5126     return 0;
5127 }
5128 EOF
5129
5130         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5131     fi
5132
5133     if enabled vsx; then
5134         check_cflags -mvsx &&
5135         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5136     fi
5137
5138     if enabled power8; then
5139         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5140     fi
5141
5142 elif enabled x86; then
5143
5144     check_builtin rdtsc    intrin.h   "__rdtsc()"
5145     check_builtin mm_empty mmintrin.h "_mm_empty()"
5146
5147     enable local_aligned_8 local_aligned_16 local_aligned_32
5148
5149     # check whether EBP is available on x86
5150     # As 'i' is stored on the stack, this program will crash
5151     # if the base pointer is used to access it because the
5152     # base pointer is cleared in the inline assembly code.
5153     check_exec_crash <<EOF && enable ebp_available
5154 volatile int i=0;
5155 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5156 return i;
5157 EOF
5158
5159     # check whether EBX is available on x86
5160     check_inline_asm ebx_available '""::"b"(0)' &&
5161         check_inline_asm ebx_available '"":::"%ebx"'
5162
5163     # check whether xmm clobbers are supported
5164     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5165
5166     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5167         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5168
5169     # check whether binutils is new enough to compile SSSE3/MMXEXT
5170     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5171     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5172
5173     if ! disabled_any asm mmx yasm; then
5174         if check_cmd $yasmexe --version; then
5175             enabled x86_64 && yasm_extra="-m amd64"
5176             yasm_debug="-g dwarf2"
5177         elif check_cmd nasm -v; then
5178             yasmexe=nasm
5179             yasm_debug="-g -F dwarf"
5180             if enabled x86_64; then
5181                 case "$objformat" in
5182                     elf)   objformat=elf64 ;;
5183                     win32) objformat=win64 ;;
5184                 esac
5185             fi
5186         fi
5187
5188         YASMFLAGS="-f $objformat $yasm_extra"
5189         enabled pic               && append YASMFLAGS "-DPIC"
5190         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5191         case "$objformat" in
5192             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5193         esac
5194
5195         check_yasm "movbe ecx, [5]" && enable yasm ||
5196             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5197         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5198         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5199         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5200         check_yasm "CPU amdnop" || disable cpunop
5201     fi
5202
5203     case "$cpu" in
5204         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5205             disable fast_clz
5206         ;;
5207     esac
5208
5209 fi
5210
5211 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5212
5213 check_ldflags -Wl,--as-needed
5214 check_ldflags -Wl,-z,noexecstack
5215
5216 if check_func dlopen; then
5217     ldl=
5218 elif check_func dlopen -ldl; then
5219     ldl=-ldl
5220 fi
5221
5222 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5223 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5224 frei0r_filter_extralibs='$ldl'
5225 frei0r_src_filter_extralibs='$ldl'
5226 ladspa_filter_extralibs='$ldl'
5227 nvenc_encoder_extralibs='$ldl'
5228
5229 if ! disabled network; then
5230     check_func getaddrinfo $network_extralibs
5231     check_func inet_aton $network_extralibs
5232
5233     check_type netdb.h "struct addrinfo"
5234     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5235     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5236     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5237     check_type poll.h "struct pollfd"
5238     check_type netinet/sctp.h "struct sctp_event_subscribe"
5239     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5240     check_type netinet/in.h "struct sockaddr_in6"
5241     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5242     check_type "sys/types.h sys/socket.h" socklen_t
5243
5244     # Prefer arpa/inet.h over winsock2
5245     if check_header arpa/inet.h ; then
5246         check_func closesocket
5247     elif check_header winsock2.h ; then
5248         check_func_headers winsock2.h closesocket -lws2 &&
5249             network_extralibs="-lws2" ||
5250         { check_func_headers winsock2.h closesocket -lws2_32 &&
5251             network_extralibs="-lws2_32"; } || disable winsock2_h network
5252         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5253
5254         check_type ws2tcpip.h socklen_t
5255         check_type ws2tcpip.h "struct addrinfo"
5256         check_type ws2tcpip.h "struct group_source_req"
5257         check_type ws2tcpip.h "struct ip_mreq_source"
5258         check_type ws2tcpip.h "struct ipv6_mreq"
5259         check_type winsock2.h "struct pollfd"
5260         check_struct winsock2.h "struct sockaddr" sa_len
5261         check_type ws2tcpip.h "struct sockaddr_in6"
5262         check_type ws2tcpip.h "struct sockaddr_storage"
5263     else
5264         disable network
5265     fi
5266 fi
5267
5268 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5269 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5270 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5271 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5272 check_builtin sarestart signal.h "SA_RESTART"
5273 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5274 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5275 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5276
5277 case "$custom_allocator" in
5278     jemalloc)
5279         # jemalloc by default does not use a prefix
5280         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5281     ;;
5282     tcmalloc)
5283         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5284         malloc_prefix=tc_
5285     ;;
5286 esac
5287
5288 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5289 check_func  ${malloc_prefix}memalign            && enable memalign
5290 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5291
5292 check_func  access
5293 check_func  arc4random
5294 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5295 check_func  fcntl
5296 check_func  fork
5297 check_func  gethrtime
5298 check_func  getopt
5299 check_func  getrusage
5300 check_func  gettimeofday
5301 check_func  isatty
5302 check_func  mach_absolute_time
5303 check_func  mkstemp
5304 check_func  mmap
5305 check_func  mprotect
5306 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5307 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5308 check_func  sched_getaffinity
5309 check_func  setrlimit
5310 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5311 check_func  strerror_r
5312 check_func  sysconf
5313 check_func  sysctl
5314 check_func  usleep
5315
5316 check_func_headers conio.h kbhit
5317 check_func_headers io.h setmode
5318 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5319 check_func_headers stdlib.h getenv
5320 check_func_headers sys/stat.h lstat
5321
5322 check_func_headers windows.h CoTaskMemFree -lole32
5323 check_func_headers windows.h GetProcessAffinityMask
5324 check_func_headers windows.h GetProcessTimes
5325 check_func_headers windows.h GetSystemTimeAsFileTime
5326 check_func_headers windows.h MapViewOfFile
5327 check_func_headers windows.h PeekNamedPipe
5328 check_func_headers windows.h SetConsoleTextAttribute
5329 check_func_headers windows.h SetConsoleCtrlHandler
5330 check_func_headers windows.h Sleep
5331 check_func_headers windows.h VirtualAlloc
5332 check_struct windows.h "CONDITION_VARIABLE" Ptr
5333 check_func_headers glob.h glob
5334 enabled xlib &&
5335     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5336
5337 check_header direct.h
5338 check_header dirent.h
5339 check_header dlfcn.h
5340 check_header d3d11.h
5341 check_header dxva.h
5342 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5343 check_header io.h
5344 check_header libcrystalhd/libcrystalhd_if.h
5345 check_header mach/mach_time.h
5346 check_header malloc.h
5347 check_header net/udplite.h
5348 check_header poll.h
5349 check_header sys/mman.h
5350 check_header sys/param.h
5351 check_header sys/resource.h
5352 check_header sys/select.h
5353 check_header sys/time.h
5354 check_header sys/un.h
5355 check_header termios.h
5356 check_header unistd.h
5357 check_header valgrind/valgrind.h
5358 check_header vdpau/vdpau.h
5359 check_header vdpau/vdpau_x11.h
5360 check_header VideoDecodeAcceleration/VDADecoder.h
5361 check_header VideoToolbox/VideoToolbox.h
5362 check_header windows.h
5363 check_header X11/extensions/XvMClib.h
5364 check_header asm/types.h
5365
5366 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5367 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5368 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5369 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5370
5371 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5372
5373 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5374 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5375 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5376 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5377 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5378
5379 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5380 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5381
5382 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5383
5384 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5385
5386 if ! disabled w32threads && ! enabled pthreads; then
5387     check_func_headers "windows.h process.h" _beginthreadex &&
5388         enable w32threads || disable w32threads
5389     if ! enabled w32threads && enabled winrt; then
5390         check_func_headers "windows.h" CreateThread &&
5391             enable w32threads || disable w32threads
5392     fi
5393 fi
5394
5395 # check for some common methods of building with pthread support
5396 # do this before the optional library checks as some of them require pthreads
5397 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5398     enable pthreads
5399     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5400         add_cflags -pthread
5401         add_extralibs -pthread
5402     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5403         add_cflags -pthreads
5404         add_extralibs -pthreads
5405     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5406         add_cflags -ldl -pthread
5407         add_extralibs -ldl -pthread
5408     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5409         add_extralibs -lpthreadGC2
5410     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5411         :
5412     elif ! check_func pthread_join && ! check_func pthread_create; then
5413         disable pthreads
5414     fi
5415     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5416 fi
5417
5418
5419 if enabled pthreads; then
5420   check_func pthread_cancel
5421 fi
5422
5423 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5424 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5425 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5426
5427 check_lib math.h sin -lm && LIBM="-lm"
5428 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5429
5430 atan2f_args=2
5431 copysign_args=2
5432 hypot_args=2
5433 ldexpf_args=2
5434 powf_args=2
5435
5436 for func in $MATH_FUNCS; do
5437     eval check_mathfunc $func \${${func}_args:-1}
5438 done
5439
5440 for func in $COMPLEX_FUNCS; do
5441     eval check_complexfunc $func \${${func}_args:-1}
5442 done
5443
5444 # these are off by default, so fail if requested and not available
5445 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5446 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5447                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5448 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5449                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5450                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5451 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5452 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5453 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5454 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5455 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5456 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5457 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5458 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5459 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5460 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5461 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5462                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5463                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5464 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5465 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5466 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5467 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5468                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5469                                  warn "using libfdk without pkg-config"; } }
5470 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"
5471 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5472 enabled fontconfig        && enable libfontconfig
5473 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5474 enabled libfreetype       && require_libfreetype
5475 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5476 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5477 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5478                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5479                                done || die "ERROR: libgsm not found"; }
5480 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5481 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5482 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5483 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5484 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5485 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5486 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5487 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5488 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5489                                require_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5490                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5491 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5492 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5493                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5494                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5495                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5496                                die "ERROR: libopenjpeg not found"; }
5497 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5498 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5499 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5500 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5501 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5502 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5503 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5504                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5505 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5506 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5507 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5508 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5509 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5510 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5511 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5512                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5513                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5514 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5515 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5516 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5517 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5518 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5519
5520 enabled libvpx            && {
5521     enabled libvpx_vp8_decoder && {
5522         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5523             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5524                 die "ERROR: libvpx decoder version must be >=0.9.1";
5525     }
5526     enabled libvpx_vp8_encoder && {
5527         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5528             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5529                 die "ERROR: libvpx encoder version must be >=0.9.7";
5530     }
5531     enabled libvpx_vp9_decoder && {
5532         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5533             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5534                 disable libvpx_vp9_decoder;
5535     }
5536     enabled libvpx_vp9_encoder && {
5537         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5538             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5539                 disable libvpx_vp9_encoder;
5540     }
5541     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5542         die "libvpx enabled but no supported decoders found"
5543     fi
5544 }
5545
5546 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5547 enabled libwebp           && {
5548     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5549     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5550 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5551                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5552                                  warn "using libx264 without pkg-config"; } } &&
5553                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5554                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5555                              { check_cpp_condition x264.h "X264_MPEG2" &&
5556                                enable libx262; }
5557 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5558                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5559                                die "ERROR: libx265 version must be >= 57."; }
5560 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5561 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5562 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5563 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5564 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5565                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5566                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5567 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5568                                 { ! enabled cross_compile && {
5569                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5570                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5571                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5572                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5573                                die "ERROR: mmal not found"; }
5574 enabled mmal &&
5575     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5576      die "ERROR: mmal firmware headers too old")
5577
5578 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5579 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5580                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5581                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5582                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5583 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5584                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5585                                die "ERROR: openal not found"; } &&
5586                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5587                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5588 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5589                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5590                                die "ERROR: opencl not found"; } &&
5591                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5592                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5593                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5594 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5595                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5596                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5597                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5598                                die "ERROR: opengl not found."
5599                              }
5600 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5601                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5602                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5603                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5604                                die "ERROR: openssl not found"; }
5605 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5606
5607 # libdc1394 check
5608 if enabled libdc1394; then
5609     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5610         enable libdc1394_2; } ||
5611     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5612         enable libdc1394_1; } ||
5613     die "ERROR: No version of libdc1394 found "
5614 fi
5615
5616 if enabled gcrypt; then
5617     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5618     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5619         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5620         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5621         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5622             die "ERROR: gcrypt not found"
5623         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5624     else
5625         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5626     fi
5627 fi
5628
5629 if ! disabled sdl; then
5630     SDL_CONFIG="${cross_prefix}sdl-config"
5631     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5632         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5633         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5634         enable sdl
5635     else
5636         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5637             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5638             sdl_libs=$("${SDL_CONFIG}" --libs)
5639             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5640             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5641             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5642             enable sdl
5643         elif enabled sdl ; then
5644             die "ERROR: SDL not found"
5645         else
5646             disable sdl
5647         fi
5648     fi
5649     if test $target_os = "mingw32"; then
5650         sdl_libs="$sdl_libs -mconsole"
5651     fi
5652 fi
5653 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5654
5655 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5656     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5657     enable securetransport; }
5658
5659 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5660                        enable schannel && add_extralibs -lSecur32; }
5661
5662 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5663 enabled makeinfo \
5664     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5665     && enable makeinfo_html || disable makeinfo_html
5666 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5667 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5668 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5669 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5670
5671 check_header linux/fb.h
5672 check_header linux/videodev.h
5673 check_header linux/videodev2.h
5674 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5675
5676 check_header sys/videoio.h
5677 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5678
5679 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5680 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5681 # w32api 3.12 had it defined wrong
5682 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5683
5684 check_type "dshow.h" IBaseFilter
5685
5686 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5687 { check_header dev/bktr/ioctl_meteor.h &&
5688   check_header dev/bktr/ioctl_bt848.h; } ||
5689 { check_header machine/ioctl_meteor.h &&
5690   check_header machine/ioctl_bt848.h; } ||
5691 { check_header dev/video/meteor/ioctl_meteor.h &&
5692   check_header dev/video/bktr/ioctl_bt848.h; } ||
5693 check_header dev/ic/bt8xx.h
5694
5695 check_header sndio.h
5696 if check_struct sys/soundcard.h audio_buf_info bytes; then
5697     enable_safe sys/soundcard.h
5698 else
5699     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5700     #include <sys/soundcard.h>
5701     audio_buf_info abc;
5702 EOF
5703 fi
5704 check_header soundcard.h
5705
5706 enabled_any alsa_indev alsa_outdev &&
5707     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5708
5709 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5710     check_func jack_port_get_latency_range -ljack
5711
5712 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5713
5714 if enabled libcdio; then
5715     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5716     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5717     die "ERROR: No usable libcdio/cdparanoia found"
5718 fi
5719
5720 enabled xlib &&
5721     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5722
5723 if ! disabled libxcb; then
5724     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5725         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5726     } && disable x11grab && enable libxcb
5727
5728 if enabled libxcb; then
5729     disabled libxcb_shm || {
5730         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5731             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5732         } && check_header sys/shm.h && enable libxcb_shm; }
5733
5734     disabled libxcb_xfixes || {
5735         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5736             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5737         } && enable libxcb_xfixes; }
5738
5739     disabled libxcb_shape || {
5740         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5741             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5742         } && enable libxcb_shape; }
5743
5744     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5745     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5746 fi
5747 fi
5748
5749 if enabled x11grab; then
5750     enabled xlib || die "ERROR: Xlib not found"
5751     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5752     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5753 fi
5754
5755 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5756
5757 enabled dxva2api_h &&
5758     check_cc <<EOF && enable dxva2api_cobj
5759 #define _WIN32_WINNT 0x0600
5760 #define COBJMACROS
5761 #include <windows.h>
5762 #include <d3d9.h>
5763 #include <dxva2api.h>
5764 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5765 EOF
5766
5767 enabled vaapi &&
5768     check_lib va/va.h vaInitialize -lva ||
5769     disable vaapi
5770
5771 enabled vaapi && enabled xlib &&
5772     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5773     enable vaapi_x11
5774
5775 enabled vdpau &&
5776     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5777     disable vdpau
5778
5779 enabled vdpau && enabled xlib &&
5780     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5781     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5782     enable vdpau_x11
5783
5784 # Funny iconv installations are not unusual, so check it after all flags have been set
5785 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5786
5787 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5788
5789 # add some useful compiler flags if supported
5790 check_cflags -Wdeclaration-after-statement
5791 check_cflags -Wall
5792 check_cflags -Wdisabled-optimization
5793 check_cflags -Wpointer-arith
5794 check_cflags -Wredundant-decls
5795 check_cflags -Wwrite-strings
5796 check_cflags -Wtype-limits
5797 check_cflags -Wundef
5798 check_cflags -Wmissing-prototypes
5799 check_cflags -Wno-pointer-to-int-cast
5800 check_cflags -Wstrict-prototypes
5801 check_cflags -Wempty-body
5802 enabled extra_warnings && check_cflags -Winline
5803 enabled extra_warnings && check_cflags -Wcast-qual
5804
5805 check_disable_warning(){
5806     warning_flag=-W${1#-Wno-}
5807     test_cflags $warning_flag && add_cflags $1
5808 }
5809
5810 check_disable_warning -Wno-parentheses
5811 check_disable_warning -Wno-switch
5812 check_disable_warning -Wno-format-zero-length
5813 check_disable_warning -Wno-pointer-sign
5814 check_disable_warning -Wno-unused-const-variable
5815
5816 # add some linker flags
5817 check_ldflags -Wl,--warn-common
5818 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5819 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5820 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5821 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5822
5823 # add some strip flags
5824 # -wN '..@*' is more selective than -x, but not available everywhere.
5825 check_stripflags -wN \'..@*\' || check_stripflags -x
5826
5827 enabled neon_clobber_test &&
5828     check_ldflags -Wl,--wrap,avcodec_open2              \
5829                   -Wl,--wrap,avcodec_decode_audio4      \
5830                   -Wl,--wrap,avcodec_decode_video2      \
5831                   -Wl,--wrap,avcodec_decode_subtitle2   \
5832                   -Wl,--wrap,avcodec_encode_audio2      \
5833                   -Wl,--wrap,avcodec_encode_video2      \
5834                   -Wl,--wrap,avcodec_encode_subtitle    \
5835                   -Wl,--wrap,swr_convert                \
5836                   -Wl,--wrap,avresample_convert ||
5837     disable neon_clobber_test
5838
5839 enabled xmm_clobber_test &&
5840     check_ldflags -Wl,--wrap,avcodec_open2              \
5841                   -Wl,--wrap,avcodec_decode_audio4      \
5842                   -Wl,--wrap,avcodec_decode_video2      \
5843                   -Wl,--wrap,avcodec_decode_subtitle2   \
5844                   -Wl,--wrap,avcodec_encode_audio2      \
5845                   -Wl,--wrap,avcodec_encode_video2      \
5846                   -Wl,--wrap,avcodec_encode_subtitle    \
5847                   -Wl,--wrap,swr_convert                \
5848                   -Wl,--wrap,avresample_convert         \
5849                   -Wl,--wrap,sws_scale ||
5850     disable xmm_clobber_test
5851
5852 echo "X { local: *; };" > $TMPV
5853 if test_ldflags -Wl,--version-script,$TMPV; then
5854     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5855 elif test_ldflags -Wl,-M,$TMPV; then
5856     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5857 fi
5858
5859 check_cc <<EOF && enable symver_asm_label
5860 void ff_foo(void) __asm__ ("av_foo@VERSION");
5861 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5862 EOF
5863     check_cc <<EOF && enable symver_gnu_asm
5864 __asm__(".symver ff_foo,av_foo@VERSION");
5865 void ff_foo(void) {}
5866 EOF
5867
5868 if [ -z "$optflags" ]; then
5869     if enabled small; then
5870         optflags=$cflags_size
5871     elif enabled optimizations; then
5872         optflags=$cflags_speed
5873     else
5874         optflags=$cflags_noopt
5875     fi
5876 fi
5877
5878 check_optflags(){
5879     check_cflags "$@"
5880     enabled lto && check_ldflags "$@"
5881 }
5882
5883
5884 if enabled lto; then
5885     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5886     check_cflags  -flto
5887     check_ldflags -flto $cpuflags
5888     disable inline_asm_direct_symbol_refs
5889 fi
5890
5891 check_optflags $optflags
5892 check_optflags -fno-math-errno
5893 check_optflags -fno-signed-zeros
5894
5895 enabled ftrapv && check_cflags -ftrapv
5896
5897 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5898 int x;
5899 EOF
5900
5901
5902 if enabled icc; then
5903     # Just warnings, no remarks
5904     check_cflags -w1
5905     # -wd: Disable following warnings
5906     # 144, 167, 556: -Wno-pointer-sign
5907     # 188: enumerated type mixed with another type
5908     # 1292: attribute "foo" ignored
5909     # 1419: external declaration in primary source file
5910     # 10006: ignoring unknown option -fno-signed-zeros
5911     # 10148: ignoring unknown option -Wno-parentheses
5912     # 10156: ignoring option '-W'; no argument required
5913     # 13200: No EMMS instruction before call to function
5914     # 13203: No EMMS instruction before return from function
5915     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5916     # 11030: Warning unknown option --as-needed
5917     # 10156: ignoring option '-export'; no argument required
5918     check_ldflags -wd10156,11030
5919     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5920     enable ebp_available
5921     # The test above does not test linking
5922     enabled lto && disable symver_asm_label
5923     if enabled x86_32; then
5924         icc_version=$($cc -dumpversion)
5925         test ${icc_version%%.*} -ge 11 &&
5926             check_cflags -falign-stack=maintain-16-byte ||
5927             disable aligned_stack
5928     fi
5929 elif enabled ccc; then
5930     # disable some annoying warnings
5931     add_cflags -msg_disable bitnotint
5932     add_cflags -msg_disable mixfuncvoid
5933     add_cflags -msg_disable nonstandcast
5934     add_cflags -msg_disable unsupieee
5935 elif enabled gcc; then
5936     check_optflags -fno-tree-vectorize
5937     check_cflags -Werror=format-security
5938     check_cflags -Werror=implicit-function-declaration
5939     check_cflags -Werror=missing-prototypes
5940     check_cflags -Werror=return-type
5941     check_cflags -Werror=vla
5942     check_cflags -Wformat
5943     check_cflags -fdiagnostics-color=auto
5944     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5945 elif enabled llvm_gcc; then
5946     check_cflags -mllvm -stack-alignment=16
5947 elif enabled clang; then
5948     check_cflags -mllvm -stack-alignment=16
5949     check_cflags -Qunused-arguments
5950     check_cflags -Werror=implicit-function-declaration
5951     check_cflags -Werror=missing-prototypes
5952     check_cflags -Werror=return-type
5953 elif enabled cparser; then
5954     add_cflags -Wno-missing-variable-declarations
5955     add_cflags -Wno-empty-statement
5956 elif enabled armcc; then
5957     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5958     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5959     # 2523: use of inline assembly is deprecated
5960     add_cflags -W${armcc_opt},--diag_suppress=2523
5961     add_cflags -W${armcc_opt},--diag_suppress=1207
5962     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5963     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5964     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5965     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5966 elif enabled tms470; then
5967     add_cflags -pds=824 -pds=837
5968     disable inline_asm
5969 elif enabled pathscale; then
5970     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5971 elif enabled_any msvc icl; then
5972     enabled x86_32 && disable aligned_stack
5973     enabled_all x86_32 debug && add_cflags -Oy-
5974     enabled debug && add_ldflags -debug
5975     enable pragma_deprecated
5976     if enabled icl; then
5977         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5978         # (correctly) on icl 13.x.
5979         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5980             add_cflags -Qansi-alias
5981         # Some inline asm is not compilable in debug
5982         if enabled debug; then
5983             disable ebp_available
5984             disable ebx_available
5985         fi
5986     fi
5987     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5988     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5989     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5990     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5991     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5992     # MSVC 2013 and newer can handle it fine.
5993     # If this declspec fails, force including stdlib.h before the restrict redefinition
5994     # happens in config.h.
5995     if [ $_restrict != restrict ]; then
5996         check_cc <<EOF || add_cflags -FIstdlib.h
5997 __declspec($_restrict) void* foo(int);
5998 EOF
5999     fi
6000     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6001 fi
6002
6003 for pfx in "" host_; do
6004     varname=${pfx%_}cc_type
6005     eval "type=\$$varname"
6006     if [ $type = "msvc" ]; then
6007         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6008 static inline int foo(int a) { return a; }
6009 EOF
6010     fi
6011 done
6012
6013 case $as_type in
6014     clang)
6015         add_asflags -Qunused-arguments
6016     ;;
6017 esac
6018
6019 case $ld_type in
6020     clang)
6021         check_ldflags -Qunused-arguments
6022     ;;
6023 esac
6024
6025 case $target_os in
6026     osf1)
6027         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6028     ;;
6029     plan9)
6030         add_cppflags -Dmain=plan9_main
6031     ;;
6032 esac
6033
6034 enable frame_thread_encoder
6035
6036 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6037
6038 check_deps $CONFIG_LIST       \
6039            $CONFIG_EXTRA      \
6040            $HAVE_LIST         \
6041            $ALL_COMPONENTS    \
6042
6043 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"
6044
6045
6046 if test $target_os = "haiku"; then
6047     disable memalign
6048     disable posix_memalign
6049 fi
6050
6051 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6052     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6053     enable dxva2_lib
6054
6055 ! enabled_any memalign posix_memalign aligned_malloc &&
6056     enabled simd_align_16 && enable memalign_hack
6057
6058 # add_dep lib dep
6059 # -> enable ${lib}_deps_${dep}
6060 # -> add $dep to ${lib}_deps only once
6061 add_dep() {
6062     lib=$1
6063     dep=$2
6064     enabled "${lib}_deps_${dep}" && return 0
6065     enable  "${lib}_deps_${dep}"
6066     prepend "${lib}_deps" $dep
6067 }
6068
6069 # merge deps lib components
6070 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6071 merge_deps() {
6072     lib=$1
6073     shift
6074     for comp in $*; do
6075         enabled $comp || continue
6076         eval "dep=\"\$${comp}_deps\""
6077         for d in $dep; do
6078             add_dep $lib $d
6079         done
6080     done
6081 }
6082
6083 merge_deps libavfilter $FILTER_LIST
6084
6085 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6086
6087 for thread in $THREADS_LIST; do
6088     if enabled $thread; then
6089         test -n "$thread_type" &&
6090             die "ERROR: Only one thread type must be selected." ||
6091             thread_type="$thread"
6092     fi
6093 done
6094
6095 enabled zlib && add_cppflags -DZLIB_CONST
6096
6097 # conditional library dependencies, in linking order
6098 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6099 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6100 enabled aresample_filter    && prepend avfilter_deps "swresample"
6101 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6102 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6103 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6104 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6105 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6106 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6107 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6108 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6109 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6110 enabled pan_filter          && prepend avfilter_deps "swresample"
6111 enabled pp_filter           && prepend avfilter_deps "postproc"
6112 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6113 enabled resample_filter && prepend avfilter_deps "avresample"
6114 enabled sab_filter          && prepend avfilter_deps "swscale"
6115 enabled scale_filter    && prepend avfilter_deps "swscale"
6116 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6117 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6118 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6119 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6120 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6121 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6122 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6123 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6124 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6125
6126 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6127
6128 enabled opus_decoder    && prepend avcodec_deps "swresample"
6129
6130 expand_deps(){
6131     lib_deps=${1}_deps
6132     eval "deps=\$$lib_deps"
6133     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6134     unique $lib_deps
6135 }
6136
6137 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6138 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6139
6140 map 'expand_deps $v' $LIBRARY_LIST
6141
6142 echo "install prefix            $prefix"
6143 echo "source path               $source_path"
6144 echo "C compiler                $cc"
6145 echo "C library                 $libc_type"
6146 if test "$host_cc" != "$cc"; then
6147     echo "host C compiler           $host_cc"
6148     echo "host C library            $host_libc_type"
6149 fi
6150 echo "ARCH                      $arch ($cpu)"
6151 if test "$build_suffix" != ""; then
6152     echo "build suffix              $build_suffix"
6153 fi
6154 if test "$progs_suffix" != ""; then
6155     echo "progs suffix              $progs_suffix"
6156 fi
6157 if test "$extra_version" != ""; then
6158     echo "version string suffix     $extra_version"
6159 fi
6160 echo "big-endian                ${bigendian-no}"
6161 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6162 if enabled x86; then
6163     echo "${yasmexe}                      ${yasm-no}"
6164     echo "MMX enabled               ${mmx-no}"
6165     echo "MMXEXT enabled            ${mmxext-no}"
6166     echo "3DNow! enabled            ${amd3dnow-no}"
6167     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6168     echo "SSE enabled               ${sse-no}"
6169     echo "SSSE3 enabled             ${ssse3-no}"
6170     echo "AESNI enabled             ${aesni-no}"
6171     echo "AVX enabled               ${avx-no}"
6172     echo "XOP enabled               ${xop-no}"
6173     echo "FMA3 enabled              ${fma3-no}"
6174     echo "FMA4 enabled              ${fma4-no}"
6175     echo "i686 features enabled     ${i686-no}"
6176     echo "CMOV is fast              ${fast_cmov-no}"
6177     echo "EBX available             ${ebx_available-no}"
6178     echo "EBP available             ${ebp_available-no}"
6179 fi
6180 if enabled aarch64; then
6181     echo "NEON enabled              ${neon-no}"
6182     echo "VFP enabled               ${vfp-no}"
6183 fi
6184 if enabled arm; then
6185     echo "ARMv5TE enabled           ${armv5te-no}"
6186     echo "ARMv6 enabled             ${armv6-no}"
6187     echo "ARMv6T2 enabled           ${armv6t2-no}"
6188     echo "VFP enabled               ${vfp-no}"
6189     echo "NEON enabled              ${neon-no}"
6190     echo "THUMB enabled             ${thumb-no}"
6191 fi
6192 if enabled mips; then
6193     echo "MIPS FPU enabled          ${mipsfpu-no}"
6194     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6195     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6196     echo "MIPS MSA enabled          ${msa-no}"
6197     echo "LOONGSON MMI enabled      ${mmi-no}"
6198 fi
6199 if enabled ppc; then
6200     echo "AltiVec enabled           ${altivec-no}"
6201     echo "VSX enabled               ${vsx-no}"
6202     echo "POWER8 enabled            ${power8-no}"
6203     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6204     echo "dcbzl available           ${dcbzl-no}"
6205 fi
6206 echo "debug symbols             ${debug-no}"
6207 echo "strip symbols             ${stripping-no}"
6208 echo "optimize for size         ${small-no}"
6209 echo "optimizations             ${optimizations-no}"
6210 echo "static                    ${static-no}"
6211 echo "shared                    ${shared-no}"
6212 echo "postprocessing support    ${postproc-no}"
6213 echo "new filter support        ${avfilter-no}"
6214 echo "network support           ${network-no}"
6215 echo "threading support         ${thread_type-no}"
6216 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6217 echo "SDL support               ${sdl-no}"
6218 echo "opencl enabled            ${opencl-no}"
6219 echo "texi2html enabled         ${texi2html-no}"
6220 echo "perl enabled              ${perl-no}"
6221 echo "pod2man enabled           ${pod2man-no}"
6222 echo "makeinfo enabled          ${makeinfo-no}"
6223 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6224 test -n "$random_seed" &&
6225     echo "random seed               ${random_seed}"
6226 echo
6227
6228 echo "Enabled programs:"
6229 print_enabled '' $PROGRAM_LIST | print_in_columns
6230 echo
6231
6232 echo "External libraries:"
6233 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6234 echo
6235
6236 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6237     echo "Enabled ${type}s:"
6238     eval list=\$$(toupper $type)_LIST
6239     print_enabled '_*' $list | print_in_columns
6240     echo
6241 done
6242
6243 license="LGPL version 2.1 or later"
6244 if enabled nonfree; then
6245     license="nonfree and unredistributable"
6246 elif enabled gplv3; then
6247     license="GPL version 3 or later"
6248 elif enabled lgplv3; then
6249     license="LGPL version 3 or later"
6250 elif enabled gpl; then
6251     license="GPL version 2 or later"
6252 fi
6253
6254 echo "License: $license"
6255
6256 echo "Creating config.mak, config.h, and doc/config.texi..."
6257
6258 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6259
6260 enabled stripping || strip="echo skipping strip"
6261
6262 config_files="$TMPH config.mak doc/config.texi"
6263
6264 cat > config.mak <<EOF
6265 # Automatically generated by configure - do not modify!
6266 ifndef FFMPEG_CONFIG_MAK
6267 FFMPEG_CONFIG_MAK=1
6268 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6269 prefix=$prefix
6270 LIBDIR=\$(DESTDIR)$libdir
6271 SHLIBDIR=\$(DESTDIR)$shlibdir
6272 INCDIR=\$(DESTDIR)$incdir
6273 BINDIR=\$(DESTDIR)$bindir
6274 DATADIR=\$(DESTDIR)$datadir
6275 DOCDIR=\$(DESTDIR)$docdir
6276 MANDIR=\$(DESTDIR)$mandir
6277 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6278 SRC_PATH=$source_path
6279 SRC_LINK=$source_link
6280 ifndef MAIN_MAKEFILE
6281 SRC_PATH:=\$(SRC_PATH:.%=..%)
6282 endif
6283 CC_IDENT=$cc_ident
6284 ARCH=$arch
6285 INTRINSICS=$intrinsics
6286 CC=$cc
6287 CXX=$cxx
6288 AS=$as
6289 OBJCC=$objcc
6290 LD=$ld
6291 DEPCC=$dep_cc
6292 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6293 DEPAS=$as
6294 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6295 YASM=$yasmexe
6296 DEPYASM=$yasmexe
6297 AR=$ar
6298 ARFLAGS=$arflags
6299 AR_O=$ar_o
6300 RANLIB=$ranlib
6301 STRIP=$strip
6302 CP=cp -p
6303 LN_S=$ln_s
6304 CPPFLAGS=$CPPFLAGS
6305 CFLAGS=$CFLAGS
6306 CXXFLAGS=$CXXFLAGS
6307 OBJCFLAGS=$OBJCFLAGS
6308 ASFLAGS=$ASFLAGS
6309 AS_C=$AS_C
6310 AS_O=$AS_O
6311 OBJCC_C=$OBJCC_C
6312 OBJCC_E=$OBJCC_E
6313 OBJCC_O=$OBJCC_O
6314 CC_C=$CC_C
6315 CC_E=$CC_E
6316 CC_O=$CC_O
6317 CXX_C=$CXX_C
6318 CXX_O=$CXX_O
6319 LD_O=$LD_O
6320 LD_LIB=$LD_LIB
6321 LD_PATH=$LD_PATH
6322 DLLTOOL=$dlltool
6323 WINDRES=$windres
6324 DEPWINDRES=$dep_cc
6325 DOXYGEN=$doxygen
6326 LDFLAGS=$LDFLAGS
6327 LDEXEFLAGS=$LDEXEFLAGS
6328 LDLIBFLAGS=$LDLIBFLAGS
6329 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6330 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6331 YASMFLAGS=$YASMFLAGS
6332 BUILDSUF=$build_suffix
6333 PROGSSUF=$progs_suffix
6334 FULLNAME=$FULLNAME
6335 LIBPREF=$LIBPREF
6336 LIBSUF=$LIBSUF
6337 LIBNAME=$LIBNAME
6338 SLIBPREF=$SLIBPREF
6339 SLIBSUF=$SLIBSUF
6340 EXESUF=$EXESUF
6341 EXTRA_VERSION=$extra_version
6342 CCDEP=$CCDEP
6343 CXXDEP=$CXXDEP
6344 CCDEP_FLAGS=$CCDEP_FLAGS
6345 ASDEP=$ASDEP
6346 ASDEP_FLAGS=$ASDEP_FLAGS
6347 CC_DEPFLAGS=$CC_DEPFLAGS
6348 AS_DEPFLAGS=$AS_DEPFLAGS
6349 HOSTCC=$host_cc
6350 HOSTLD=$host_ld
6351 HOSTCFLAGS=$host_cflags
6352 HOSTCPPFLAGS=$host_cppflags
6353 HOSTEXESUF=$HOSTEXESUF
6354 HOSTLDFLAGS=$host_ldflags
6355 HOSTLIBS=$host_libs
6356 DEPHOSTCC=$host_cc
6357 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6358 HOSTCCDEP=$HOSTCCDEP
6359 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6360 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6361 HOSTCC_C=$HOSTCC_C
6362 HOSTCC_O=$HOSTCC_O
6363 HOSTLD_O=$HOSTLD_O
6364 TARGET_EXEC=$target_exec $target_exec_args
6365 TARGET_PATH=$target_path
6366 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6367 CFLAGS-ffplay=$sdl_cflags
6368 ZLIB=$($ldflags_filter -lz)
6369 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6370 EXTRALIBS=$extralibs
6371 COMPAT_OBJS=$compat_objs
6372 EXEOBJS=$exeobjs
6373 INSTALL=$install
6374 LIBTARGET=${LIBTARGET}
6375 SLIBNAME=${SLIBNAME}
6376 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6377 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6378 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6379 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6380 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6381 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6382 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6383 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6384 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6385 NOREDZONE_FLAGS=$noredzone_flags
6386 EOF
6387
6388 get_version(){
6389     lcname=lib${1}
6390     name=$(toupper $lcname)
6391     file=$source_path/$lcname/version.h
6392     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6393     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6394     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6395     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6396     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6397     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6398 }
6399
6400 map 'get_version $v' $LIBRARY_LIST
6401
6402 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6403
6404 print_program_libs(){
6405     eval "program_libs=\$${1}_libs"
6406     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6407 }
6408
6409 map 'print_program_libs $v' $PROGRAM_LIST
6410
6411 cat > $TMPH <<EOF
6412 /* Automatically generated by configure - do not modify! */
6413 #ifndef FFMPEG_CONFIG_H
6414 #define FFMPEG_CONFIG_H
6415 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6416 #define FFMPEG_LICENSE "$(c_escape $license)"
6417 #define CONFIG_THIS_YEAR 2016
6418 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6419 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6420 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6421 #define av_restrict $_restrict
6422 #define EXTERN_PREFIX "${extern_prefix}"
6423 #define EXTERN_ASM ${extern_prefix}
6424 #define BUILDSUF "$build_suffix"
6425 #define SLIBSUF "$SLIBSUF"
6426 #define HAVE_MMX2 HAVE_MMXEXT
6427 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6428 EOF
6429
6430 test -n "$assert_level" &&
6431     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6432
6433 test -n "$malloc_prefix" &&
6434     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6435
6436 if enabled yasm; then
6437     append config_files $TMPASM
6438     printf '' >$TMPASM
6439 fi
6440
6441 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6442
6443
6444 mkdir -p doc
6445 mkdir -p tests
6446 mkdir -p tests/api
6447 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6448
6449 print_config ARCH_   "$config_files" $ARCH_LIST
6450 print_config HAVE_   "$config_files" $HAVE_LIST
6451 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6452                                      $CONFIG_EXTRA      \
6453                                      $ALL_COMPONENTS    \
6454
6455 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6456 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6457
6458 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6459 cp_if_changed $TMPH config.h
6460 touch .config
6461
6462 enabled yasm && cp_if_changed $TMPASM config.asm
6463
6464 cat > $TMPH <<EOF
6465 /* Generated by ffconf */
6466 #ifndef AVUTIL_AVCONFIG_H
6467 #define AVUTIL_AVCONFIG_H
6468 EOF
6469
6470 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6471
6472 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6473
6474 cp_if_changed $TMPH libavutil/avconfig.h
6475
6476 if test -n "$WARNINGS"; then
6477     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6478     enabled fatal_warnings && exit 1
6479 fi
6480
6481 # build pkg-config files
6482
6483 lib_version(){
6484     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6485 }
6486
6487 pkgconfig_generate(){
6488     name=$1
6489     shortname=${name#lib}${build_suffix}
6490     comment=$2
6491     version=$3
6492     libs=$4
6493     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6494     requires=${requires%, }
6495     enabled ${name#lib} || return 0
6496     mkdir -p $name
6497     cat <<EOF > $name/$name${build_suffix}.pc
6498 prefix=$prefix
6499 exec_prefix=\${prefix}
6500 libdir=$libdir
6501 includedir=$incdir
6502
6503 Name: $name
6504 Description: $comment
6505 Version: $version
6506 Requires: $(enabled shared || echo $requires)
6507 Requires.private: $(enabled shared && echo $requires)
6508 Conflicts:
6509 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6510 Libs.private: $(enabled shared && echo $libs)
6511 Cflags: -I\${includedir}
6512 EOF
6513
6514 mkdir -p doc/examples/pc-uninstalled
6515 includedir=${source_path}
6516 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6517     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6518 prefix=
6519 exec_prefix=
6520 libdir=\${pcfiledir}/../../../$name
6521 includedir=${includedir}
6522
6523 Name: $name
6524 Description: $comment
6525 Version: $version
6526 Requires: $requires
6527 Conflicts:
6528 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6529 Cflags: -I\${includedir}
6530 EOF
6531 }
6532
6533 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6534 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6535 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6536 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6537 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6538 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6539 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6540 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6541 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"