git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-d3d11va        disable D3D11VA code [autodetect]
 153   --disable-dxva2          disable DXVA2 code [autodetect]
 154   --disable-vaapi          disable VAAPI code [autodetect]
 155   --disable-vda            disable VDA code [autodetect]
 156   --disable-vdpau          disable VDPAU code [autodetect]
 157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 201   --enable-frei0r          enable frei0r video filtering [no]
 202   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 203                            if openssl, librtmp or gmp is not used [no]
 204   --enable-gmp             enable gmp, needed for rtmp(t)e support
 205                            if openssl or librtmp is not used [no]
 206   --enable-gnutls          enable gnutls, needed for https support
 207                            if openssl is not used [no]
 208   --disable-iconv          disable iconv [autodetect]
 209   --enable-ladspa          enable LADSPA audio filtering [no]
 210   --enable-libass          enable libass subtitles rendering,
 211                            needed for subtitles and ass filter [no]
 212   --enable-libbluray       enable BluRay reading using libbluray [no]
 213   --enable-libbs2b         enable bs2b DSP library [no]
 214   --enable-libcaca         enable textual display using libcaca [no]
 215   --enable-libcelt         enable CELT decoding via libcelt [no]
 216   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 217   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 218                            and libraw1394 [no]
 219   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 220   --enable-libfaac         enable AAC encoding via libfaac [no]
 221   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 222   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 223   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 224   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 225   --enable-libgme          enable Game Music Emu via libgme [no]
 226   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 227   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 228   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 229   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 230   --enable-libmfx          enable HW acceleration through libmfx
 231   --enable-libmodplug      enable ModPlug via libmodplug [no]
 232   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 233   --enable-libnut          enable NUT (de)muxing via libnut,
 234                            native (de)muxer exists [no]
 235   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 236   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 237   --enable-libopencv       enable video filtering via libopencv [no]
 238   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 239   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 240   --enable-libopus         enable Opus de/encoding via libopus [no]
 241   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 242   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 243   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 244   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 245   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 246   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 247   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 248   --enable-libsoxr         enable Include libsoxr resampling [no]
 249   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 250   --enable-libssh          enable SFTP protocol via libssh [no]
 251   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 252   --enable-libtheora       enable Theora encoding via libtheora [no]
 253   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 254   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 255   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 256   --enable-libvidstab      enable video stabilization using vid.stab [no]
 257   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 258   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 259                            native implementation exists [no]
 260   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 261   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 262   --enable-libwebp         enable WebP encoding via libwebp [no]
 263   --enable-libx264         enable H.264 encoding via x264 [no]
 264   --enable-libx265         enable HEVC encoding via x265 [no]
 265   --enable-libxavs         enable AVS encoding via xavs [no]
 266   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 267   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 268   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 269   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 270   --enable-libxvid         enable Xvid encoding via xvidcore,
 271                            native MPEG-4/Xvid encoder exists [no]
 272   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 273   --enable-libzmq          enable message passing via libzmq [no]
 274   --enable-libzvbi         enable teletext support via libzvbi [no]
 275   --disable-lzma           disable lzma [autodetect]
 276   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 277   --enable-mmal            enable decoding via MMAL [no]
 278   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 279   --enable-nvenc           enable NVIDIA NVENC support [no]
 280   --enable-openal          enable OpenAL 1.1 capture support [no]
 281   --enable-opencl          enable OpenCL code
 282   --enable-opengl          enable OpenGL rendering [no]
 283   --enable-openssl         enable openssl, needed for https support
 284                            if gnutls is not used [no]
 285   --disable-schannel       disable SChannel SSP, needed for TLS support on
 286                            Windows if openssl and gnutls are not used [autodetect]
 287   --disable-sdl            disable sdl [autodetect]
 288   --disable-securetransport disable Secure Transport, needed for TLS support
 289                            on OSX if openssl and gnutls are not used [autodetect]
 290   --enable-x11grab         enable X11 grabbing (legacy) [no]
 291   --disable-xlib           disable xlib [autodetect]
 292   --disable-zlib           disable zlib [autodetect]
 293
 294 Toolchain options:
 295   --arch=ARCH              select architecture [$arch]
 296   --cpu=CPU                select the minimum required CPU (affects
 297                            instruction selection, may crash on older CPUs)
 298   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 299   --progs-suffix=SUFFIX    program name suffix []
 300   --enable-cross-compile   assume a cross-compiler is used
 301   --sysroot=PATH           root of cross-build tree
 302   --sysinclude=PATH        location of cross-build system headers
 303   --target-os=OS           compiler targets OS [$target_os]
 304   --target-exec=CMD        command to run executables on target
 305   --target-path=DIR        path to view of build directory on target
 306   --target-samples=DIR     path to samples directory on target
 307   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 308   --toolchain=NAME         set tool defaults according to NAME
 309   --nm=NM                  use nm tool NM [$nm_default]
 310   --ar=AR                  use archive tool AR [$ar_default]
 311   --as=AS                  use assembler AS [$as_default]
 312   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 313   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 314   --cc=CC                  use C compiler CC [$cc_default]
 315   --cxx=CXX                use C compiler CXX [$cxx_default]
 316   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 317   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 318   --ld=LD                  use linker LD [$ld_default]
 319   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 320   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 321   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 322   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 323   --host-cc=HOSTCC         use host C compiler HOSTCC
 324   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 325   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 326   --host-ld=HOSTLD         use host linker HOSTLD
 327   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 328   --host-libs=HLIBS        use libs HLIBS when linking for host
 329   --host-os=OS             compiler host OS [$target_os]
 330   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 331   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 332   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 333   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 334   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 335   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 336   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 337   --extra-version=STRING   version string suffix []
 338   --optflags=OPTFLAGS      override optimization-related compiler flags
 339   --build-suffix=SUFFIX    library name suffix []
 340   --enable-pic             build position-independent code
 341   --enable-thumb           compile for Thumb instruction set
 342   --enable-lto             use link-time optimization
 343   --env="ENV=override"     override the environment variables
 344
 345 Advanced options (experts only):
 346   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 347   --custom-allocator=NAME  use a supported custom allocator
 348   --disable-symver         disable symbol versioning
 349   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 350   --disable-safe-bitstream-reader
 351                            disable buffer boundary checking in bitreaders
 352                            (faster, but may crash)
 353   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 354   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 355
 356 Optimization options (experts only):
 357   --disable-asm            disable all assembly optimizations
 358   --disable-altivec        disable AltiVec optimizations
 359   --disable-vsx            disable VSX optimizations
 360   --disable-power8         disable POWER8 optimizations
 361   --disable-amd3dnow       disable 3DNow! optimizations
 362   --disable-amd3dnowext    disable 3DNow! extended optimizations
 363   --disable-mmx            disable MMX optimizations
 364   --disable-mmxext         disable MMXEXT optimizations
 365   --disable-sse            disable SSE optimizations
 366   --disable-sse2           disable SSE2 optimizations
 367   --disable-sse3           disable SSE3 optimizations
 368   --disable-ssse3          disable SSSE3 optimizations
 369   --disable-sse4           disable SSE4 optimizations
 370   --disable-sse42          disable SSE4.2 optimizations
 371   --disable-avx            disable AVX optimizations
 372   --disable-xop            disable XOP optimizations
 373   --disable-fma3           disable FMA3 optimizations
 374   --disable-fma4           disable FMA4 optimizations
 375   --disable-avx2           disable AVX2 optimizations
 376   --disable-aesni          disable AESNI optimizations
 377   --disable-armv5te        disable armv5te optimizations
 378   --disable-armv6          disable armv6 optimizations
 379   --disable-armv6t2        disable armv6t2 optimizations
 380   --disable-vfp            disable VFP optimizations
 381   --disable-neon           disable NEON optimizations
 382   --disable-inline-asm     disable use of inline assembly
 383   --disable-yasm           disable use of nasm/yasm assembly
 384   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 385   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 386   --disable-msa            disable MSA optimizations
 387   --disable-mipsfpu        disable floating point MIPS optimizations
 388   --disable-mmi            disable Loongson SIMD optimizations
 389   --disable-fast-unaligned consider unaligned accesses slow
 390
 391 Developer options (useful when working on FFmpeg itself):
 392   --disable-debug          disable debugging symbols
 393   --enable-debug=LEVEL     set the debug level [$debuglevel]
 394   --disable-optimizations  disable compiler optimizations
 395   --enable-extra-warnings  enable more compiler warnings
 396   --disable-stripping      disable stripping of executables and shared libraries
 397   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 398                            2 causes a slowdown at runtime.
 399   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 400   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 401                            leaks and errors, using the specified valgrind binary.
 402                            Cannot be combined with --target-exec
 403   --enable-ftrapv          Trap arithmetic overflows
 404   --samples=PATH           location of test samples for FATE, if not set use
 405                            \$FATE_SAMPLES at make invocation time.
 406   --enable-neon-clobber-test check NEON registers for clobbering (should be
 407                            used only for debugging purposes)
 408   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 409                            should be used only for debugging purposes)
 410   --enable-random          randomly enable/disable components
 411   --disable-random
 412   --enable-random=LIST     randomly enable/disable specific components or
 413   --disable-random=LIST    component groups. LIST is a comma-separated list
 414                            of NAME[:PROB] entries where NAME is a component
 415                            (group) and PROB the probability associated with
 416                            NAME (default 0.5).
 417   --random-seed=VALUE      seed value for --enable/disable-random
 418   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 419                            (only applies to --disable-optimizations builds)
 420
 421 NOTE: Object files are built at the place where configure is launched.
 422 EOF
 423   exit 0
 424 }
 425
 426 quotes='""'
 427 if test -t 1 && which tput >/dev/null 2>&1; then
 428     ncolors=$(tput colors)
 429     if test -n "$ncolors" && test $ncolors -ge 8; then
 430         bold_color=$(tput bold)
 431         warn_color=$(tput setaf 3)
 432         error_color=$(tput setaf 1)
 433         reset_color=$(tput sgr0)
 434     fi
 435     # 72 used instead of 80 since that's the default of pr
 436     ncols=$(tput cols)
 437 fi
 438 : ${ncols:=72}
 439
 440 log(){
 441     echo "$@" >> $logfile
 442 }
 443
 444 log_file(){
 445     log BEGIN $1
 446     pr -n -t $1 >> $logfile
 447     log END $1
 448 }
 449
 450 warn(){
 451     log "WARNING: $*"
 452     WARNINGS="${WARNINGS}WARNING: $*\n"
 453 }
 454
 455 die(){
 456     log "$@"
 457     echo "$error_color$bold_color$@$reset_color"
 458     cat <<EOF
 459
 460 If you think configure made a mistake, make sure you are using the latest
 461 version from Git.  If the latest version fails, report the problem to the
 462 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 463 EOF
 464     if disabled logging; then
 465         cat <<EOF
 466 Rerun configure with logging enabled (do not use --disable-logging), and
 467 include the log this produces with your report.
 468 EOF
 469     else
 470         cat <<EOF
 471 Include the log file "$logfile" produced by configure as this will help
 472 solve the problem.
 473 EOF
 474     fi
 475     exit 1
 476 }
 477
 478 # Avoid locale weirdness, besides we really just want to translate ASCII.
 479 toupper(){
 480     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 481 }
 482
 483 tolower(){
 484     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 485 }
 486
 487 c_escape(){
 488     echo "$*" | sed 's/["\\]/\\\0/g'
 489 }
 490
 491 sh_quote(){
 492     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 493     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 494     echo "$v"
 495 }
 496
 497 cleanws(){
 498     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 499 }
 500
 501 filter(){
 502     pat=$1
 503     shift
 504     for v; do
 505         eval "case $v in $pat) echo $v ;; esac"
 506     done
 507 }
 508
 509 filter_out(){
 510     pat=$1
 511     shift
 512     for v; do
 513         eval "case $v in $pat) ;; *) echo $v ;; esac"
 514     done
 515 }
 516
 517 map(){
 518     m=$1
 519     shift
 520     for v; do eval $m; done
 521 }
 522
 523 add_suffix(){
 524     suffix=$1
 525     shift
 526     for v; do echo ${v}${suffix}; done
 527 }
 528
 529 set_all(){
 530     value=$1
 531     shift
 532     for var in $*; do
 533         eval $var=$value
 534     done
 535 }
 536
 537 set_weak(){
 538     value=$1
 539     shift
 540     for var; do
 541         eval : \${$var:=$value}
 542     done
 543 }
 544
 545 sanitize_var_name(){
 546     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 547 }
 548
 549 set_safe(){
 550     var=$1
 551     shift
 552     eval $(sanitize_var_name "$var")='$*'
 553 }
 554
 555 get_safe(){
 556     eval echo \$$(sanitize_var_name "$1")
 557 }
 558
 559 pushvar(){
 560     for pvar in $*; do
 561         eval level=\${${pvar}_level:=0}
 562         eval ${pvar}_${level}="\$$pvar"
 563         eval ${pvar}_level=$(($level+1))
 564     done
 565 }
 566
 567 popvar(){
 568     for pvar in $*; do
 569         eval level=\${${pvar}_level:-0}
 570         test $level = 0 && continue
 571         eval level=$(($level-1))
 572         eval $pvar="\${${pvar}_${level}}"
 573         eval ${pvar}_level=$level
 574         eval unset ${pvar}_${level}
 575     done
 576 }
 577
 578 enable(){
 579     set_all yes $*
 580 }
 581
 582 disable(){
 583     set_all no $*
 584 }
 585
 586 enable_weak(){
 587     set_weak yes $*
 588 }
 589
 590 disable_weak(){
 591     set_weak no $*
 592 }
 593
 594 enable_safe(){
 595     for var; do
 596         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 597     done
 598 }
 599
 600 disable_safe(){
 601     for var; do
 602         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 603     done
 604 }
 605
 606 do_enable_deep(){
 607     for var; do
 608         enabled $var && continue
 609         eval sel="\$${var}_select"
 610         eval sgs="\$${var}_suggest"
 611         pushvar var sgs
 612         enable_deep $sel
 613         popvar sgs
 614         enable_deep_weak $sgs
 615         popvar var
 616     done
 617 }
 618
 619 enable_deep(){
 620     do_enable_deep $*
 621     enable $*
 622 }
 623
 624 enable_deep_weak(){
 625     for var; do
 626         disabled $var && continue
 627         pushvar var
 628         do_enable_deep $var
 629         popvar var
 630         enable_weak $var
 631     done
 632 }
 633
 634 enabled(){
 635     test "${1#!}" = "$1" && op='=' || op=!=
 636     eval test "x\$${1#!}" $op "xyes"
 637 }
 638
 639 disabled(){
 640     test "${1#!}" = "$1" && op='=' || op=!=
 641     eval test "x\$${1#!}" $op "xno"
 642 }
 643
 644 enabled_all(){
 645     for opt; do
 646         enabled $opt || return 1
 647     done
 648 }
 649
 650 disabled_all(){
 651     for opt; do
 652         disabled $opt || return 1
 653     done
 654 }
 655
 656 enabled_any(){
 657     for opt; do
 658         enabled $opt && return 0
 659     done
 660 }
 661
 662 disabled_any(){
 663     for opt; do
 664         disabled $opt && return 0
 665     done
 666     return 1
 667 }
 668
 669 set_default(){
 670     for opt; do
 671         eval : \${$opt:=\$${opt}_default}
 672     done
 673 }
 674
 675 is_in(){
 676     value=$1
 677     shift
 678     for var in $*; do
 679         [ $var = $value ] && return 0
 680     done
 681     return 1
 682 }
 683
 684 do_check_deps(){
 685     for cfg; do
 686         cfg="${cfg#!}"
 687         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 688         disabled ${cfg}_checking && continue
 689         enable ${cfg}_checking
 690         append allopts $cfg
 691
 692         eval dep_all="\$${cfg}_deps"
 693         eval dep_any="\$${cfg}_deps_any"
 694         eval dep_sel="\$${cfg}_select"
 695         eval dep_sgs="\$${cfg}_suggest"
 696         eval dep_ifa="\$${cfg}_if"
 697         eval dep_ifn="\$${cfg}_if_any"
 698
 699         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 700         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 701         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 702
 703         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 704         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 705         enabled_all  $dep_all || disable $cfg
 706         enabled_any  $dep_any || disable $cfg
 707         disabled_any $dep_sel && disable $cfg
 708
 709         if enabled $cfg; then
 710             enable_deep $dep_sel
 711             enable_deep_weak $dep_sgs
 712         fi
 713
 714         disable ${cfg}_checking
 715     done
 716 }
 717
 718 check_deps(){
 719     unset allopts
 720
 721     do_check_deps "$@"
 722
 723     for cfg in $allopts; do
 724         enabled $cfg || continue
 725         eval dep_extralibs="\$${cfg}_extralibs"
 726         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 727     done
 728 }
 729
 730 print_config(){
 731     pfx=$1
 732     files=$2
 733     shift 2
 734     map 'eval echo "$v \${$v:-no}"' "$@" |
 735     awk "BEGIN { split(\"$files\", files) }
 736         {
 737             c = \"$pfx\" toupper(\$1);
 738             v = \$2;
 739             sub(/yes/, 1, v);
 740             sub(/no/,  0, v);
 741             for (f in files) {
 742                 file = files[f];
 743                 if (file ~ /\\.h\$/) {
 744                     printf(\"#define %s %d\\n\", c, v) >>file;
 745                 } else if (file ~ /\\.asm\$/) {
 746                     printf(\"%%define %s %d\\n\", c, v) >>file;
 747                 } else if (file ~ /\\.mak\$/) {
 748                     n = -v ? \"\" : \"!\";
 749                     printf(\"%s%s=yes\\n\", n, c) >>file;
 750                 } else if (file ~ /\\.texi\$/) {
 751                     pre = -v ? \"\" : \"@c \";
 752                     yesno = \$2;
 753                     c2 = tolower(c);
 754                     gsub(/_/, \"-\", c2);
 755                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 756                 }
 757             }
 758         }"
 759 }
 760
 761 print_enabled(){
 762     suf=$1
 763     shift
 764     for v; do
 765         enabled $v && printf "%s\n" ${v%$suf};
 766     done
 767 }
 768
 769 append(){
 770     var=$1
 771     shift
 772     eval "$var=\"\$$var $*\""
 773 }
 774
 775 prepend(){
 776     var=$1
 777     shift
 778     eval "$var=\"$* \$$var\""
 779 }
 780
 781 unique(){
 782     var=$1
 783     uniq_list=""
 784     for tok in $(eval echo \$$var); do
 785         uniq_list="$(filter_out $tok $uniq_list) $tok"
 786     done
 787     eval "$var=\"${uniq_list}\""
 788 }
 789
 790 add_cppflags(){
 791     append CPPFLAGS "$@"
 792 }
 793
 794 add_cflags(){
 795     append CFLAGS $($cflags_filter "$@")
 796 }
 797
 798 add_cxxflags(){
 799     append CXXFLAGS $($cflags_filter "$@")
 800 }
 801
 802 add_asflags(){
 803     append ASFLAGS $($asflags_filter "$@")
 804 }
 805
 806 add_objcflags(){
 807     append OBJCFLAGS $($objcflags_filter "$@")
 808 }
 809
 810 add_ldflags(){
 811     append LDFLAGS $($ldflags_filter "$@")
 812 }
 813
 814 add_ldexeflags(){
 815     append LDEXEFLAGS $($ldflags_filter "$@")
 816 }
 817
 818 add_ldlibflags(){
 819     append LDLIBFLAGS $($ldflags_filter "$@")
 820 }
 821
 822 add_stripflags(){
 823     append ASMSTRIPFLAGS "$@"
 824 }
 825
 826 add_extralibs(){
 827     prepend extralibs $($ldflags_filter "$@")
 828 }
 829
 830 add_host_cppflags(){
 831     append host_cppflags "$@"
 832 }
 833
 834 add_host_cflags(){
 835     append host_cflags $($host_cflags_filter "$@")
 836 }
 837
 838 add_host_ldflags(){
 839     append host_ldflags $($host_ldflags_filter "$@")
 840 }
 841
 842 add_compat(){
 843     append compat_objs $1
 844     shift
 845     map 'add_cppflags -D$v' "$@"
 846 }
 847
 848 check_cmd(){
 849     log "$@"
 850     "$@" >> $logfile 2>&1
 851 }
 852
 853 check_stat(){
 854     log check_stat "$@"
 855     stat "$1" >> $logfile 2>&1
 856 }
 857
 858 cc_o(){
 859     eval printf '%s\\n' $CC_O
 860 }
 861
 862 cc_e(){
 863     eval printf '%s\\n' $CC_E
 864 }
 865
 866 check_cc(){
 867     log check_cc "$@"
 868     cat > $TMPC
 869     log_file $TMPC
 870     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 871 }
 872
 873 check_cxx(){
 874     log check_cxx "$@"
 875     cat > $TMPCPP
 876     log_file $TMPCPP
 877     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 878 }
 879
 880 check_objcc(){
 881     log check_objcc "$@"
 882     cat > $TMPM
 883     log_file $TMPM
 884     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 885 }
 886
 887 check_cpp(){
 888     log check_cpp "$@"
 889     cat > $TMPC
 890     log_file $TMPC
 891     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 892 }
 893
 894 as_o(){
 895     eval printf '%s\\n' $AS_O
 896 }
 897
 898 check_as(){
 899     log check_as "$@"
 900     cat > $TMPS
 901     log_file $TMPS
 902     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 903 }
 904
 905 check_inline_asm(){
 906     log check_inline_asm "$@"
 907     name="$1"
 908     code="$2"
 909     shift 2
 910     disable $name
 911     check_cc "$@" <<EOF && enable $name
 912 void foo(void){ __asm__ volatile($code); }
 913 EOF
 914 }
 915
 916 check_insn(){
 917     log check_insn "$@"
 918     check_inline_asm ${1}_inline "\"$2\""
 919     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 920 }
 921
 922 check_yasm(){
 923     log check_yasm "$@"
 924     echo "$1" > $TMPS
 925     log_file $TMPS
 926     shift 1
 927     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 928 }
 929
 930 ld_o(){
 931     eval printf '%s\\n' $LD_O
 932 }
 933
 934 check_ld(){
 935     log check_ld "$@"
 936     type=$1
 937     shift 1
 938     flags=$(filter_out '-l*|*.so' $@)
 939     libs=$(filter '-l*|*.so' $@)
 940     check_$type $($cflags_filter $flags) || return
 941     flags=$($ldflags_filter $flags)
 942     libs=$($ldflags_filter $libs)
 943     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 944 }
 945
 946 print_include(){
 947     hdr=$1
 948     test "${hdr%.h}" = "${hdr}" &&
 949         echo "#include $hdr"    ||
 950         echo "#include <$hdr>"
 951 }
 952
 953 check_code(){
 954     log check_code "$@"
 955     check=$1
 956     headers=$2
 957     code=$3
 958     shift 3
 959     {
 960         for hdr in $headers; do
 961             print_include $hdr
 962         done
 963         echo "int main(void) { $code; return 0; }"
 964     } | check_$check "$@"
 965 }
 966
 967 check_cppflags(){
 968     log check_cppflags "$@"
 969     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 970 int x;
 971 EOF
 972 }
 973
 974 test_cflags(){
 975     log test_cflags "$@"
 976     set -- $($cflags_filter "$@")
 977     check_cc "$@" <<EOF
 978 int x;
 979 EOF
 980 }
 981
 982 check_cflags(){
 983     log check_cflags "$@"
 984     test_cflags "$@" && add_cflags "$@"
 985 }
 986
 987 check_cxxflags(){
 988     log check_cxxflags "$@"
 989     set -- $($cflags_filter "$@")
 990     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 991 int x;
 992 EOF
 993 }
 994
 995 test_objcflags(){
 996     log test_cflags "$@"
 997     set -- $($cflags_filter "$@")
 998     check_objcc "$@" <<EOF
 999 int x;
1000 EOF
1001 }
1002
1003 check_objcflags(){
1004     log check_cflags "$@"
1005     test_objcflags "$@" && add_objcflags "$@"
1006 }
1007
1008 test_ldflags(){
1009     log test_ldflags "$@"
1010     check_ld "cc" "$@" <<EOF
1011 int main(void){ return 0; }
1012 EOF
1013 }
1014
1015 check_ldflags(){
1016     log check_ldflags "$@"
1017     test_ldflags "$@" && add_ldflags "$@"
1018 }
1019
1020 test_stripflags(){
1021     log test_stripflags "$@"
1022     # call check_cc to get a fresh TMPO
1023     check_cc <<EOF
1024 int main(void) { return 0; }
1025 EOF
1026     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1027 }
1028
1029 check_stripflags(){
1030     log check_stripflags "$@"
1031     test_stripflags "$@" && add_stripflags "$@"
1032 }
1033
1034 check_header(){
1035     log check_header "$@"
1036     header=$1
1037     shift
1038     disable_safe $header
1039     check_cpp "$@" <<EOF && enable_safe $header
1040 #include <$header>
1041 int x;
1042 EOF
1043 }
1044
1045 check_header_objcc(){
1046     log check_header_objcc "$@"
1047     rm -f -- "$TMPO"
1048     header=$1
1049     shift
1050     disable_safe $header
1051     {
1052        echo "#include <$header>"
1053        echo "int main(void) { return 0; }"
1054     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1055 }
1056
1057 check_func(){
1058     log check_func "$@"
1059     func=$1
1060     shift
1061     disable $func
1062     check_ld "cc" "$@" <<EOF && enable $func
1063 extern int $func();
1064 int main(void){ $func(); }
1065 EOF
1066 }
1067
1068 check_complexfunc(){
1069     log check_complexfunc "$@"
1070     func=$1
1071     narg=$2
1072     shift 2
1073     test $narg = 2 && args="f, g" || args="f * I"
1074     disable $func
1075     check_ld "cc" "$@" <<EOF && enable $func
1076 #include <complex.h>
1077 #include <math.h>
1078 float foo(complex float f, complex float g) { return $func($args); }
1079 int main(void){ return (int) foo; }
1080 EOF
1081 }
1082
1083 check_mathfunc(){
1084     log check_mathfunc "$@"
1085     func=$1
1086     narg=$2
1087     shift 2
1088     test $narg = 2 && args="f, g" || args="f"
1089     disable $func
1090     check_ld "cc" "$@" <<EOF && enable $func
1091 #include <math.h>
1092 float foo(float f, float g) { return $func($args); }
1093 int main(void){ return (int) foo; }
1094 EOF
1095 }
1096
1097 check_func_headers(){
1098     log check_func_headers "$@"
1099     headers=$1
1100     funcs=$2
1101     shift 2
1102     {
1103         for hdr in $headers; do
1104             print_include $hdr
1105         done
1106         for func in $funcs; do
1107             echo "long check_$func(void) { return (long) $func; }"
1108         done
1109         echo "int main(void) { return 0; }"
1110     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1111 }
1112
1113 check_class_headers_cpp(){
1114     log check_class_headers_cpp "$@"
1115     headers=$1
1116     classes=$2
1117     shift 2
1118     {
1119         for hdr in $headers; do
1120             echo "#include <$hdr>"
1121         done
1122         echo "int main(void) { "
1123         i=1
1124         for class in $classes; do
1125             echo "$class obj$i;"
1126             i=$(expr $i + 1)
1127         done
1128         echo "return 0; }"
1129     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1130 }
1131
1132 check_cpp_condition(){
1133     log check_cpp_condition "$@"
1134     header=$1
1135     condition=$2
1136     shift 2
1137     check_cpp "$@" <<EOF
1138 #include <$header>
1139 #if !($condition)
1140 #error "unsatisfied condition: $condition"
1141 #endif
1142 EOF
1143 }
1144
1145 check_lib(){
1146     log check_lib "$@"
1147     header="$1"
1148     func="$2"
1149     shift 2
1150     check_header $header && check_func $func "$@" && add_extralibs "$@"
1151 }
1152
1153 check_lib2(){
1154     log check_lib2 "$@"
1155     headers="$1"
1156     funcs="$2"
1157     shift 2
1158     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1159 }
1160
1161 check_lib_cpp(){
1162     log check_lib_cpp "$@"
1163     headers="$1"
1164     classes="$2"
1165     shift 2
1166     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1167 }
1168
1169 check_pkg_config(){
1170     log check_pkg_config "$@"
1171     pkgandversion="$1"
1172     pkg="${1%% *}"
1173     headers="$2"
1174     funcs="$3"
1175     shift 3
1176     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1177     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1178     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1179     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1180         set_safe "${pkg}_cflags" $pkg_cflags   &&
1181         set_safe "${pkg}_libs"   $pkg_libs
1182 }
1183
1184 check_exec(){
1185     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1186 }
1187
1188 check_exec_crash(){
1189     code=$(cat)
1190
1191     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1192     # are safe but may not be available everywhere.  Thus we use
1193     # raise(SIGTERM) instead.  The check is run in a subshell so we
1194     # can redirect the "Terminated" message from the shell.  SIGBUS
1195     # is not defined by standard C so it is used conditionally.
1196
1197     (check_exec "$@") >> $logfile 2>&1 <<EOF
1198 #include <signal.h>
1199 static void sighandler(int sig){
1200     raise(SIGTERM);
1201 }
1202 int foo(void){
1203     $code
1204 }
1205 int (*func_ptr)(void) = foo;
1206 int main(void){
1207     signal(SIGILL, sighandler);
1208     signal(SIGFPE, sighandler);
1209     signal(SIGSEGV, sighandler);
1210 #ifdef SIGBUS
1211     signal(SIGBUS, sighandler);
1212 #endif
1213     return func_ptr();
1214 }
1215 EOF
1216 }
1217
1218 check_type(){
1219     log check_type "$@"
1220     headers=$1
1221     type=$2
1222     shift 2
1223     disable_safe "$type"
1224     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1225 }
1226
1227 check_struct(){
1228     log check_struct "$@"
1229     headers=$1
1230     struct=$2
1231     member=$3
1232     shift 3
1233     disable_safe "${struct}_${member}"
1234     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1235         enable_safe "${struct}_${member}"
1236 }
1237
1238 check_builtin(){
1239     log check_builtin "$@"
1240     name=$1
1241     headers=$2
1242     builtin=$3
1243     shift 3
1244     disable "$name"
1245     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1246 }
1247
1248 check_compile_assert(){
1249     log check_compile_assert "$@"
1250     name=$1
1251     headers=$2
1252     condition=$3
1253     shift 3
1254     disable "$name"
1255     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1256 }
1257
1258 require(){
1259     name="$1"
1260     header="$2"
1261     func="$3"
1262     shift 3
1263     check_lib $header $func "$@" || die "ERROR: $name not found"
1264 }
1265
1266 require2(){
1267     name="$1"
1268     headers="$2"
1269     func="$3"
1270     shift 3
1271     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1272 }
1273
1274 require_cpp(){
1275     name="$1"
1276     headers="$2"
1277     classes="$3"
1278     shift 3
1279     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1280 }
1281
1282 use_pkg_config(){
1283     pkg="$1"
1284     check_pkg_config "$@" || return 1
1285     add_cflags    $(get_safe "${pkg}_cflags")
1286     add_extralibs $(get_safe "${pkg}_libs")
1287 }
1288
1289 require_pkg_config(){
1290     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1291 }
1292
1293 require_libfreetype(){
1294     log require_libfreetype "$@"
1295     pkg="freetype2"
1296     check_cmd $pkg_config --exists --print-errors $pkg \
1297       || die "ERROR: $pkg not found"
1298     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1299     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1300     {
1301         echo "#include <ft2build.h>"
1302         echo "#include FT_FREETYPE_H"
1303         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1304         echo "int main(void) { return 0; }"
1305     } | check_ld "cc" $pkg_cflags $pkg_libs \
1306       && set_safe "${pkg}_cflags" $pkg_cflags \
1307       && set_safe "${pkg}_libs"   $pkg_libs \
1308       || die "ERROR: $pkg not found"
1309     add_cflags    $(get_safe "${pkg}_cflags")
1310     add_extralibs $(get_safe "${pkg}_libs")
1311 }
1312
1313 hostcc_e(){
1314     eval printf '%s\\n' $HOSTCC_E
1315 }
1316
1317 hostcc_o(){
1318     eval printf '%s\\n' $HOSTCC_O
1319 }
1320
1321 check_host_cc(){
1322     log check_host_cc "$@"
1323     cat > $TMPC
1324     log_file $TMPC
1325     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1326 }
1327
1328 check_host_cpp(){
1329     log check_host_cpp "$@"
1330     cat > $TMPC
1331     log_file $TMPC
1332     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1333 }
1334
1335 check_host_cppflags(){
1336     log check_host_cppflags "$@"
1337     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1338 int x;
1339 EOF
1340 }
1341
1342 check_host_cflags(){
1343     log check_host_cflags "$@"
1344     set -- $($host_cflags_filter "$@")
1345     check_host_cc "$@" <<EOF && append host_cflags "$@"
1346 int x;
1347 EOF
1348 }
1349
1350 check_host_cpp_condition(){
1351     log check_host_cpp_condition "$@"
1352     header=$1
1353     condition=$2
1354     shift 2
1355     check_host_cpp "$@" <<EOF
1356 #include <$header>
1357 #if !($condition)
1358 #error "unsatisfied condition: $condition"
1359 #endif
1360 EOF
1361 }
1362
1363 cp_if_changed(){
1364     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1365     mkdir -p "$(dirname $2)"
1366     $cp_f "$1" "$2"
1367 }
1368
1369 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1370 # system-dependent things.
1371
1372 AVCODEC_COMPONENTS="
1373     bsfs
1374     decoders
1375     encoders
1376     hwaccels
1377     parsers
1378 "
1379
1380 AVDEVICE_COMPONENTS="
1381     indevs
1382     outdevs
1383 "
1384 AVFILTER_COMPONENTS="
1385     filters
1386 "
1387 AVFORMAT_COMPONENTS="
1388     demuxers
1389     muxers
1390     protocols
1391 "
1392
1393 AVRESAMPLE_COMPONENTS=""
1394 AVUTIL_COMPONENTS=""
1395
1396 COMPONENT_LIST="
1397     $AVCODEC_COMPONENTS
1398     $AVDEVICE_COMPONENTS
1399     $AVFILTER_COMPONENTS
1400     $AVFORMAT_COMPONENTS
1401     $AVRESAMPLE_COMPONENTS
1402     $AVUTIL_COMPONENTS
1403 "
1404
1405 EXAMPLE_LIST="
1406     avio_reading_example
1407     avio_dir_cmd_example
1408     decoding_encoding_example
1409     demuxing_decoding_example
1410     extract_mvs_example
1411     filter_audio_example
1412     filtering_audio_example
1413     filtering_video_example
1414     metadata_example
1415     muxing_example
1416     qsvdec_example
1417     remuxing_example
1418     resampling_audio_example
1419     scaling_video_example
1420     transcode_aac_example
1421     transcoding_example
1422 "
1423
1424 EXTERNAL_LIBRARY_LIST="
1425     avisynth
1426     bzlib
1427     chromaprint
1428     crystalhd
1429     decklink
1430     frei0r
1431     gcrypt
1432     gmp
1433     gnutls
1434     iconv
1435     ladspa
1436     libass
1437     libbluray
1438     libbs2b
1439     libcaca
1440     libcdio
1441     libcelt
1442     libdc1394
1443     libdcadec
1444     libfaac
1445     libfdk_aac
1446     libflite
1447     libfontconfig
1448     libfreetype
1449     libfribidi
1450     libgme
1451     libgsm
1452     libiec61883
1453     libilbc
1454     libkvazaar
1455     libmfx
1456     libmodplug
1457     libmp3lame
1458     libnut
1459     libopencore_amrnb
1460     libopencore_amrwb
1461     libopencv
1462     libopenh264
1463     libopenjpeg
1464     libopus
1465     libpulse
1466     librtmp
1467     librubberband
1468     libschroedinger
1469     libshine
1470     libsmbclient
1471     libsnappy
1472     libsoxr
1473     libspeex
1474     libssh
1475     libtesseract
1476     libtheora
1477     libtwolame
1478     libutvideo
1479     libv4l2
1480     libvidstab
1481     libvo_amrwbenc
1482     libvorbis
1483     libvpx
1484     libwavpack
1485     libwebp
1486     libx264
1487     libx265
1488     libxavs
1489     libxcb
1490     libxcb_shm
1491     libxcb_shape
1492     libxcb_xfixes
1493     libxvid
1494     libzimg
1495     libzmq
1496     libzvbi
1497     lzma
1498     mmal
1499     netcdf
1500     nvenc
1501     openal
1502     opencl
1503     opengl
1504     openssl
1505     schannel
1506     sdl
1507     securetransport
1508     x11grab
1509     xlib
1510     zlib
1511 "
1512
1513 DOCUMENT_LIST="
1514     doc
1515     htmlpages
1516     manpages
1517     podpages
1518     txtpages
1519 "
1520
1521 FEATURE_LIST="
1522     ftrapv
1523     gray
1524     hardcoded_tables
1525     runtime_cpudetect
1526     safe_bitstream_reader
1527     shared
1528     small
1529     static
1530     swscale_alpha
1531 "
1532
1533 HWACCEL_LIST="
1534     d3d11va
1535     dxva2
1536     vaapi
1537     vda
1538     vdpau
1539     videotoolbox
1540     xvmc
1541 "
1542
1543 LIBRARY_LIST="
1544     avcodec
1545     avdevice
1546     avfilter
1547     avformat
1548     avresample
1549     avutil
1550     postproc
1551     swresample
1552     swscale
1553 "
1554
1555 LICENSE_LIST="
1556     gpl
1557     nonfree
1558     version3
1559 "
1560
1561 PROGRAM_LIST="
1562     ffplay
1563     ffprobe
1564     ffserver
1565     ffmpeg
1566 "
1567
1568 SUBSYSTEM_LIST="
1569     dct
1570     dwt
1571     error_resilience
1572     faan
1573     fast_unaligned
1574     fft
1575     lsp
1576     lzo
1577     mdct
1578     pixelutils
1579     network
1580     rdft
1581 "
1582
1583 CONFIG_LIST="
1584     $COMPONENT_LIST
1585     $DOCUMENT_LIST
1586     $EXAMPLE_LIST
1587     $EXTERNAL_LIBRARY_LIST
1588     $FEATURE_LIST
1589     $HWACCEL_LIST
1590     $LICENSE_LIST
1591     $LIBRARY_LIST
1592     $PROGRAM_LIST
1593     $SUBSYSTEM_LIST
1594     fontconfig
1595     incompatible_libav_abi
1596     memalign_hack
1597     memory_poisoning
1598     neon_clobber_test
1599     pic
1600     pod2man
1601     raise_major
1602     thumb
1603     valgrind_backtrace
1604     xmm_clobber_test
1605 "
1606
1607 THREADS_LIST="
1608     pthreads
1609     os2threads
1610     w32threads
1611 "
1612
1613 ATOMICS_LIST="
1614     atomics_gcc
1615     atomics_suncc
1616     atomics_win32
1617 "
1618
1619 ARCH_LIST="
1620     aarch64
1621     alpha
1622     arm
1623     avr32
1624     avr32_ap
1625     avr32_uc
1626     bfin
1627     ia64
1628     m68k
1629     mips
1630     mips64
1631     parisc
1632     ppc
1633     ppc64
1634     s390
1635     sh4
1636     sparc
1637     sparc64
1638     tilegx
1639     tilepro
1640     tomi
1641     x86
1642     x86_32
1643     x86_64
1644 "
1645
1646 ARCH_EXT_LIST_ARM="
1647     armv5te
1648     armv6
1649     armv6t2
1650     armv8
1651     neon
1652     vfp
1653     vfpv3
1654     setend
1655 "
1656
1657 ARCH_EXT_LIST_MIPS="
1658     mipsfpu
1659     mips32r2
1660     mips64r2
1661     mips32r6
1662     mips64r6
1663     mipsdsp
1664     mipsdspr2
1665     msa
1666 "
1667
1668 ARCH_EXT_LIST_LOONGSON="
1669     loongson2
1670     loongson3
1671     mmi
1672 "
1673
1674 ARCH_EXT_LIST_X86_SIMD="
1675     aesni
1676     amd3dnow
1677     amd3dnowext
1678     avx
1679     avx2
1680     fma3
1681     fma4
1682     mmx
1683     mmxext
1684     sse
1685     sse2
1686     sse3
1687     sse4
1688     sse42
1689     ssse3
1690     xop
1691 "
1692
1693 ARCH_EXT_LIST_PPC="
1694     altivec
1695     dcbzl
1696     ldbrx
1697     power8
1698     ppc4xx
1699     vsx
1700 "
1701
1702 ARCH_EXT_LIST_X86="
1703     $ARCH_EXT_LIST_X86_SIMD
1704     cpunop
1705     i686
1706 "
1707
1708 ARCH_EXT_LIST="
1709     $ARCH_EXT_LIST_ARM
1710     $ARCH_EXT_LIST_PPC
1711     $ARCH_EXT_LIST_X86
1712     $ARCH_EXT_LIST_MIPS
1713     $ARCH_EXT_LIST_LOONGSON
1714 "
1715
1716 ARCH_FEATURES="
1717     aligned_stack
1718     fast_64bit
1719     fast_clz
1720     fast_cmov
1721     local_aligned_8
1722     local_aligned_16
1723     local_aligned_32
1724     simd_align_16
1725 "
1726
1727 BUILTIN_LIST="
1728     atomic_cas_ptr
1729     atomic_compare_exchange
1730     machine_rw_barrier
1731     MemoryBarrier
1732     mm_empty
1733     rdtsc
1734     sarestart
1735     sem_timedwait
1736     sync_val_compare_and_swap
1737 "
1738 HAVE_LIST_CMDLINE="
1739     inline_asm
1740     symver
1741     yasm
1742 "
1743
1744 HAVE_LIST_PUB="
1745     bigendian
1746     fast_unaligned
1747     incompatible_libav_abi
1748 "
1749
1750 HEADERS_LIST="
1751     alsa_asoundlib_h
1752     altivec_h
1753     arpa_inet_h
1754     asm_types_h
1755     cdio_paranoia_h
1756     cdio_paranoia_paranoia_h
1757     dispatch_dispatch_h
1758     dev_bktr_ioctl_bt848_h
1759     dev_bktr_ioctl_meteor_h
1760     dev_ic_bt8xx_h
1761     dev_video_bktr_ioctl_bt848_h
1762     dev_video_meteor_ioctl_meteor_h
1763     direct_h
1764     dirent_h
1765     dlfcn_h
1766     d3d11_h
1767     dxva_h
1768     ES2_gl_h
1769     gsm_h
1770     io_h
1771     mach_mach_time_h
1772     machine_ioctl_bt848_h
1773     machine_ioctl_meteor_h
1774     malloc_h
1775     opencv2_core_core_c_h
1776     openjpeg_2_1_openjpeg_h
1777     openjpeg_2_0_openjpeg_h
1778     openjpeg_1_5_openjpeg_h
1779     OpenGL_gl3_h
1780     poll_h
1781     sndio_h
1782     soundcard_h
1783     sys_mman_h
1784     sys_param_h
1785     sys_resource_h
1786     sys_select_h
1787     sys_soundcard_h
1788     sys_time_h
1789     sys_un_h
1790     sys_videoio_h
1791     termios_h
1792     udplite_h
1793     unistd_h
1794     valgrind_valgrind_h
1795     windows_h
1796     winsock2_h
1797 "
1798
1799 INTRINSICS_LIST="
1800     intrinsics_neon
1801 "
1802
1803 COMPLEX_FUNCS="
1804     cabs
1805     cexp
1806 "
1807
1808 MATH_FUNCS="
1809     atanf
1810     atan2f
1811     cbrt
1812     cbrtf
1813     copysign
1814     cosf
1815     erf
1816     exp2
1817     exp2f
1818     expf
1819     hypot
1820     isfinite
1821     isinf
1822     isnan
1823     ldexpf
1824     llrint
1825     llrintf
1826     log2
1827     log2f
1828     log10f
1829     lrint
1830     lrintf
1831     powf
1832     rint
1833     round
1834     roundf
1835     sinf
1836     trunc
1837     truncf
1838 "
1839
1840 SYSTEM_FUNCS="
1841     access
1842     aligned_malloc
1843     arc4random
1844     clock_gettime
1845     closesocket
1846     CommandLineToArgvW
1847     CoTaskMemFree
1848     CryptGenRandom
1849     dlopen
1850     fcntl
1851     flt_lim
1852     fork
1853     getaddrinfo
1854     gethrtime
1855     getopt
1856     GetProcessAffinityMask
1857     GetProcessMemoryInfo
1858     GetProcessTimes
1859     getrusage
1860     GetSystemTimeAsFileTime
1861     gettimeofday
1862     glob
1863     glXGetProcAddress
1864     gmtime_r
1865     inet_aton
1866     isatty
1867     jack_port_get_latency_range
1868     kbhit
1869     localtime_r
1870     lstat
1871     lzo1x_999_compress
1872     mach_absolute_time
1873     MapViewOfFile
1874     memalign
1875     mkstemp
1876     mmap
1877     mprotect
1878     nanosleep
1879     PeekNamedPipe
1880     posix_memalign
1881     pthread_cancel
1882     sched_getaffinity
1883     SetConsoleTextAttribute
1884     SetConsoleCtrlHandler
1885     setmode
1886     setrlimit
1887     Sleep
1888     strerror_r
1889     sysconf
1890     sysctl
1891     usleep
1892     UTGetOSTypeFromString
1893     VirtualAlloc
1894     wglGetProcAddress
1895 "
1896
1897 TOOLCHAIN_FEATURES="
1898     as_dn_directive
1899     as_func
1900     as_object_arch
1901     asm_mod_q
1902     attribute_may_alias
1903     attribute_packed
1904     ebp_available
1905     ebx_available
1906     gnu_as
1907     gnu_windres
1908     ibm_asm
1909     inline_asm_direct_symbol_refs
1910     inline_asm_labels
1911     inline_asm_nonlocal_labels
1912     pragma_deprecated
1913     rsync_contimeout
1914     symver_asm_label
1915     symver_gnu_asm
1916     vfp_args
1917     xform_asm
1918     xmm_clobbers
1919 "
1920
1921 TYPES_LIST="
1922     CONDITION_VARIABLE_Ptr
1923     socklen_t
1924     struct_addrinfo
1925     struct_group_source_req
1926     struct_ip_mreq_source
1927     struct_ipv6_mreq
1928     struct_pollfd
1929     struct_rusage_ru_maxrss
1930     struct_sctp_event_subscribe
1931     struct_sockaddr_in6
1932     struct_sockaddr_sa_len
1933     struct_sockaddr_storage
1934     struct_stat_st_mtim_tv_nsec
1935     struct_v4l2_frmivalenum_discrete
1936 "
1937
1938 HAVE_LIST="
1939     $ARCH_EXT_LIST
1940     $(add_suffix _external $ARCH_EXT_LIST)
1941     $(add_suffix _inline   $ARCH_EXT_LIST)
1942     $ARCH_FEATURES
1943     $ATOMICS_LIST
1944     $BUILTIN_LIST
1945     $COMPLEX_FUNCS
1946     $HAVE_LIST_CMDLINE
1947     $HAVE_LIST_PUB
1948     $HEADERS_LIST
1949     $INTRINSICS_LIST
1950     $MATH_FUNCS
1951     $SYSTEM_FUNCS
1952     $THREADS_LIST
1953     $TOOLCHAIN_FEATURES
1954     $TYPES_LIST
1955     atomics_native
1956     dos_paths
1957     dxva2_lib
1958     dxva2api_cobj
1959     libc_msvcrt
1960     libdc1394_1
1961     libdc1394_2
1962     makeinfo
1963     makeinfo_html
1964     perl
1965     pod2man
1966     sdl
1967     section_data_rel_ro
1968     texi2html
1969     threads
1970     vaapi_x11
1971     vdpau_x11
1972     winrt
1973     xlib
1974 "
1975
1976 # options emitted with CONFIG_ prefix but not available on the command line
1977 CONFIG_EXTRA="
1978     aandcttables
1979     ac3dsp
1980     audio_frame_queue
1981     audiodsp
1982     blockdsp
1983     bswapdsp
1984     cabac
1985     dirac_parse
1986     dvprofile
1987     exif
1988     faandct
1989     faanidct
1990     fdctdsp
1991     flacdsp
1992     fmtconvert
1993     frame_thread_encoder
1994     g722dsp
1995     golomb
1996     gplv3
1997     h263dsp
1998     h264chroma
1999     h264dsp
2000     h264pred
2001     h264qpel
2002     hpeldsp
2003     huffman
2004     huffyuvdsp
2005     huffyuvencdsp
2006     idctdsp
2007     iirfilter
2008     imdct15
2009     intrax8
2010     ividsp
2011     jpegtables
2012     lgplv3
2013     libx262
2014     llauddsp
2015     llviddsp
2016     lpc
2017     lzf
2018     me_cmp
2019     mpeg_er
2020     mpegaudio
2021     mpegaudiodsp
2022     mpegvideo
2023     mpegvideoenc
2024     mss34dsp
2025     pixblockdsp
2026     qpeldsp
2027     qsv
2028     qsvdec
2029     qsvenc
2030     rangecoder
2031     riffdec
2032     riffenc
2033     rtpdec
2034     rtpenc_chain
2035     rv34dsp
2036     sinewin
2037     snappy
2038     startcode
2039     texturedsp
2040     texturedspenc
2041     tpeldsp
2042     videodsp
2043     vp3dsp
2044     vp56dsp
2045     vp8dsp
2046     wma_freqs
2047     wmv2dsp
2048 "
2049
2050 CMDLINE_SELECT="
2051     $ARCH_EXT_LIST
2052     $CONFIG_LIST
2053     $HAVE_LIST_CMDLINE
2054     $THREADS_LIST
2055     asm
2056     cross_compile
2057     debug
2058     extra_warnings
2059     logging
2060     lto
2061     optimizations
2062     rpath
2063     stripping
2064 "
2065
2066 PATHS_LIST="
2067     bindir
2068     datadir
2069     docdir
2070     incdir
2071     libdir
2072     mandir
2073     pkgconfigdir
2074     prefix
2075     shlibdir
2076 "
2077
2078 CMDLINE_SET="
2079     $PATHS_LIST
2080     ar
2081     arch
2082     as
2083     assert_level
2084     build_suffix
2085     cc
2086     objcc
2087     cpu
2088     cross_prefix
2089     custom_allocator
2090     cxx
2091     dep_cc
2092     doxygen
2093     env
2094     extra_version
2095     gas
2096     host_cc
2097     host_cflags
2098     host_ld
2099     host_ldflags
2100     host_libs
2101     host_os
2102     install
2103     ld
2104     logfile
2105     malloc_prefix
2106     nm
2107     optflags
2108     pkg_config
2109     pkg_config_flags
2110     progs_suffix
2111     random_seed
2112     ranlib
2113     samples
2114     strip
2115     sws_max_filter_size
2116     sysinclude
2117     sysroot
2118     target_exec
2119     target_os
2120     target_path
2121     target_samples
2122     tempprefix
2123     toolchain
2124     valgrind
2125     yasmexe
2126 "
2127
2128 CMDLINE_APPEND="
2129     extra_cflags
2130     extra_cxxflags
2131     extra_objcflags
2132     host_cppflags
2133 "
2134
2135 # code dependency declarations
2136
2137 # architecture extensions
2138
2139 armv5te_deps="arm"
2140 armv6_deps="arm"
2141 armv6t2_deps="arm"
2142 armv8_deps="aarch64"
2143 neon_deps_any="aarch64 arm"
2144 intrinsics_neon_deps="neon"
2145 vfp_deps_any="aarch64 arm"
2146 vfpv3_deps="vfp"
2147 setend_deps="arm"
2148
2149 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2150
2151 mipsfpu_deps="mips"
2152 mipsdsp_deps="mips"
2153 mipsdspr2_deps="mips"
2154 mips32r2_deps="mips"
2155 mips32r6_deps="mips"
2156 mips64r2_deps="mips"
2157 mips64r6_deps="mips"
2158 msa_deps="mips"
2159 mmi_deps="mips"
2160
2161 altivec_deps="ppc"
2162 dcbzl_deps="ppc"
2163 ldbrx_deps="ppc"
2164 ppc4xx_deps="ppc"
2165 vsx_deps="altivec"
2166 power8_deps="vsx"
2167
2168 cpunop_deps="i686"
2169 x86_64_select="i686"
2170 x86_64_suggest="fast_cmov"
2171
2172 amd3dnow_deps="mmx"
2173 amd3dnowext_deps="amd3dnow"
2174 i686_deps="x86"
2175 mmx_deps="x86"
2176 mmxext_deps="mmx"
2177 sse_deps="mmxext"
2178 sse2_deps="sse"
2179 sse3_deps="sse2"
2180 ssse3_deps="sse3"
2181 sse4_deps="ssse3"
2182 sse42_deps="sse4"
2183 aesni_deps="sse42"
2184 avx_deps="sse42"
2185 xop_deps="avx"
2186 fma3_deps="avx"
2187 fma4_deps="avx"
2188 avx2_deps="avx"
2189
2190 mmx_external_deps="yasm"
2191 mmx_inline_deps="inline_asm"
2192 mmx_suggest="mmx_external mmx_inline"
2193
2194 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2195     eval dep=\$${ext}_deps
2196     eval ${ext}_external_deps='"${dep}_external"'
2197     eval ${ext}_inline_deps='"${dep}_inline"'
2198     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2199 done
2200
2201 aligned_stack_if_any="aarch64 ppc x86"
2202 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2203 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2204 fast_unaligned_if_any="aarch64 ppc x86"
2205 simd_align_16_if_any="altivec neon sse"
2206
2207 # system capabilities
2208 symver_if_any="symver_asm_label symver_gnu_asm"
2209 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2210
2211 # threading support
2212 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2213 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2214 atomics_win32_if="MemoryBarrier"
2215 atomics_native_if_any="$ATOMICS_LIST"
2216 w32threads_deps="atomics_native"
2217 threads_if_any="$THREADS_LIST"
2218
2219 # subsystems
2220 dct_select="rdft"
2221 dirac_parse_select="golomb"
2222 error_resilience_select="me_cmp"
2223 faandct_deps="faan fdctdsp"
2224 faanidct_deps="faan idctdsp"
2225 frame_thread_encoder_deps="encoders threads"
2226 intrax8_select="error_resilience"
2227 mdct_select="fft"
2228 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2229 mpeg_er_select="error_resilience"
2230 mpegaudio_select="mpegaudiodsp"
2231 mpegaudiodsp_select="dct"
2232 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2233 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2234 qsvdec_select="qsv"
2235 qsvenc_select="qsv"
2236 rdft_select="fft"
2237
2238 # decoders / encoders
2239 aac_decoder_select="imdct15 mdct sinewin"
2240 aac_fixed_decoder_select="mdct sinewin"
2241 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2242 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2243 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2244 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2245 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2246 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2247 adpcm_g722_decoder_select="g722dsp"
2248 adpcm_g722_encoder_select="g722dsp"
2249 aic_decoder_select="golomb idctdsp"
2250 alac_encoder_select="lpc"
2251 als_decoder_select="bswapdsp"
2252 amrnb_decoder_select="lsp"
2253 amrwb_decoder_select="lsp"
2254 amv_decoder_select="sp5x_decoder exif"
2255 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2256 ape_decoder_select="bswapdsp llauddsp"
2257 apng_decoder_select="zlib"
2258 apng_encoder_select="huffyuvencdsp zlib"
2259 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2260 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2261 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2262 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2263 atrac1_decoder_select="mdct sinewin"
2264 atrac3_decoder_select="mdct"
2265 atrac3p_decoder_select="mdct sinewin"
2266 avrn_decoder_select="exif jpegtables"
2267 bink_decoder_select="blockdsp hpeldsp"
2268 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2269 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2270 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2271 cllc_decoder_select="bswapdsp"
2272 comfortnoise_encoder_select="lpc"
2273 cook_decoder_select="audiodsp mdct sinewin"
2274 cscd_decoder_select="lzo"
2275 cscd_decoder_suggest="zlib"
2276 dca_decoder_select="mdct"
2277 dds_decoder_select="texturedsp"
2278 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2279 dnxhd_decoder_select="blockdsp idctdsp"
2280 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2281 dvvideo_decoder_select="dvprofile idctdsp"
2282 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2283 dxa_decoder_select="zlib"
2284 dxv_decoder_select="lzf texturedsp"
2285 eac3_decoder_select="ac3_decoder"
2286 eac3_encoder_select="ac3_encoder"
2287 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2288 eatgq_decoder_select="aandcttables"
2289 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2290 exr_decoder_select="zlib"
2291 ffv1_decoder_select="golomb rangecoder"
2292 ffv1_encoder_select="rangecoder"
2293 ffvhuff_decoder_select="huffyuv_decoder"
2294 ffvhuff_encoder_select="huffyuv_encoder"
2295 fic_decoder_select="golomb"
2296 flac_decoder_select="flacdsp golomb"
2297 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2298 flashsv2_decoder_select="zlib"
2299 flashsv2_encoder_select="zlib"
2300 flashsv_decoder_select="zlib"
2301 flashsv_encoder_select="zlib"
2302 flv_decoder_select="h263_decoder"
2303 flv_encoder_select="h263_encoder"
2304 fourxm_decoder_select="blockdsp bswapdsp"
2305 fraps_decoder_select="bswapdsp huffman"
2306 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2307 g729_decoder_select="audiodsp"
2308 h261_decoder_select="mpegvideo"
2309 h261_encoder_select="aandcttables mpegvideoenc"
2310 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2311 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2312 h263i_decoder_select="h263_decoder"
2313 h263p_decoder_select="h263_decoder"
2314 h263p_encoder_select="h263_encoder"
2315 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2316 h264_decoder_suggest="error_resilience"
2317 h264_qsv_decoder_deps="libmfx"
2318 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2319 h264_qsv_encoder_deps="libmfx"
2320 h264_qsv_encoder_select="qsvenc"
2321 hap_decoder_select="snappy texturedsp"
2322 hap_encoder_deps="libsnappy"
2323 hap_encoder_select="texturedspenc"
2324 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2325 hevc_qsv_decoder_deps="libmfx"
2326 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2327 hevc_qsv_encoder_deps="libmfx"
2328 hevc_qsv_encoder_select="qsvenc"
2329 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2330 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2331 iac_decoder_select="imc_decoder"
2332 imc_decoder_select="bswapdsp fft mdct sinewin"
2333 indeo3_decoder_select="hpeldsp"
2334 indeo4_decoder_select="ividsp"
2335 indeo5_decoder_select="ividsp"
2336 interplay_video_decoder_select="hpeldsp"
2337 jpegls_decoder_select="golomb mjpeg_decoder"
2338 jpegls_encoder_select="golomb"
2339 jv_decoder_select="blockdsp"
2340 lagarith_decoder_select="huffyuvdsp"
2341 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2342 loco_decoder_select="golomb"
2343 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2344 metasound_decoder_select="lsp mdct sinewin"
2345 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2346 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2347 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2348 mjpegb_decoder_select="mjpeg_decoder"
2349 mlp_decoder_select="mlp_parser"
2350 motionpixels_decoder_select="bswapdsp"
2351 mp1_decoder_select="mpegaudio"
2352 mp1float_decoder_select="mpegaudio"
2353 mp2_decoder_select="mpegaudio"
2354 mp2float_decoder_select="mpegaudio"
2355 mp3_decoder_select="mpegaudio"
2356 mp3adu_decoder_select="mpegaudio"
2357 mp3adufloat_decoder_select="mpegaudio"
2358 mp3float_decoder_select="mpegaudio"
2359 mp3on4_decoder_select="mpegaudio"
2360 mp3on4float_decoder_select="mpegaudio"
2361 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2362 mpc8_decoder_select="mpegaudiodsp"
2363 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2364 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2365 mpegvideo_decoder_select="mpegvideo"
2366 mpeg1video_decoder_select="mpegvideo"
2367 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2368 mpeg2video_decoder_select="mpegvideo"
2369 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2370 mpeg2_qsv_decoder_deps="libmfx"
2371 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2372 mpeg2_qsv_encoder_deps="libmfx"
2373 mpeg2_qsv_encoder_select="qsvenc"
2374 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2375 mpeg4_encoder_select="h263_encoder"
2376 msa1_decoder_select="mss34dsp"
2377 msmpeg4v1_decoder_select="h263_decoder"
2378 msmpeg4v2_decoder_select="h263_decoder"
2379 msmpeg4v2_encoder_select="h263_encoder"
2380 msmpeg4v3_decoder_select="h263_decoder"
2381 msmpeg4v3_encoder_select="h263_encoder"
2382 mss2_decoder_select="vc1_decoder"
2383 mts2_decoder_select="mss34dsp"
2384 mxpeg_decoder_select="mjpeg_decoder"
2385 nellymoser_decoder_select="mdct sinewin"
2386 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2387 nuv_decoder_select="idctdsp lzo"
2388 on2avc_decoder_select="mdct"
2389 opus_decoder_deps="swresample"
2390 opus_decoder_select="imdct15"
2391 png_decoder_select="zlib"
2392 png_encoder_select="huffyuvencdsp zlib"
2393 prores_decoder_select="blockdsp idctdsp"
2394 prores_encoder_select="fdctdsp"
2395 qcelp_decoder_select="lsp"
2396 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2397 ra_144_decoder_select="audiodsp"
2398 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2399 ralf_decoder_select="golomb"
2400 rawvideo_decoder_select="bswapdsp"
2401 rscc_decoder_select="zlib"
2402 rtjpeg_decoder_select="me_cmp"
2403 rv10_decoder_select="h263_decoder"
2404 rv10_encoder_select="h263_encoder"
2405 rv20_decoder_select="h263_decoder"
2406 rv20_encoder_select="h263_encoder"
2407 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2408 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2409 screenpresso_decoder_select="zlib"
2410 shorten_decoder_select="golomb"
2411 sipr_decoder_select="lsp"
2412 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2413 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2414 sonic_decoder_select="golomb rangecoder"
2415 sonic_encoder_select="golomb rangecoder"
2416 sonic_ls_encoder_select="golomb rangecoder"
2417 sp5x_decoder_select="mjpeg_decoder"
2418 svq1_decoder_select="hpeldsp"
2419 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2420 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2421 svq3_decoder_suggest="zlib"
2422 tak_decoder_select="audiodsp"
2423 tdsc_decoder_select="zlib mjpeg_decoder"
2424 theora_decoder_select="vp3_decoder"
2425 thp_decoder_select="mjpeg_decoder"
2426 tiff_decoder_suggest="zlib lzma"
2427 tiff_encoder_suggest="zlib"
2428 truehd_decoder_select="mlp_parser"
2429 truemotion2_decoder_select="bswapdsp"
2430 truespeech_decoder_select="bswapdsp"
2431 tscc_decoder_select="zlib"
2432 twinvq_decoder_select="mdct lsp sinewin"
2433 txd_decoder_select="texturedsp"
2434 utvideo_decoder_select="bswapdsp"
2435 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2436 vble_decoder_select="huffyuvdsp"
2437 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2438 vc1_qsv_decoder_deps="libmfx"
2439 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2440 vc1image_decoder_select="vc1_decoder"
2441 vorbis_decoder_select="mdct"
2442 vorbis_encoder_select="mdct"
2443 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2444 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2445 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2446 vp6a_decoder_select="vp6_decoder"
2447 vp6f_decoder_select="vp6_decoder"
2448 vp7_decoder_select="h264pred videodsp vp8dsp"
2449 vp8_decoder_select="h264pred videodsp vp8dsp"
2450 vp9_decoder_select="videodsp vp9_parser"
2451 webp_decoder_select="vp8_decoder exif"
2452 wmalossless_decoder_select="llauddsp"
2453 wmapro_decoder_select="mdct sinewin wma_freqs"
2454 wmav1_decoder_select="mdct sinewin wma_freqs"
2455 wmav1_encoder_select="mdct sinewin wma_freqs"
2456 wmav2_decoder_select="mdct sinewin wma_freqs"
2457 wmav2_encoder_select="mdct sinewin wma_freqs"
2458 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2459 wmv1_decoder_select="h263_decoder"
2460 wmv1_encoder_select="h263_encoder"
2461 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2462 wmv2_encoder_select="h263_encoder wmv2dsp"
2463 wmv3_decoder_select="vc1_decoder"
2464 wmv3image_decoder_select="wmv3_decoder"
2465 xma1_decoder_select="wmapro_decoder"
2466 xma2_decoder_select="wmapro_decoder"
2467 zerocodec_decoder_select="zlib"
2468 zlib_decoder_select="zlib"
2469 zlib_encoder_select="zlib"
2470 zmbv_decoder_select="zlib"
2471 zmbv_encoder_select="zlib"
2472
2473 # hardware accelerators
2474 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2475 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2476 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2477 vaapi_deps="va_va_h"
2478 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2479 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2480 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2481 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2482 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2483 xvmc_deps="X11_extensions_XvMClib_h"
2484
2485 h263_vaapi_hwaccel_deps="vaapi"
2486 h263_vaapi_hwaccel_select="h263_decoder"
2487 h263_videotoolbox_hwaccel_deps="videotoolbox"
2488 h263_videotoolbox_hwaccel_select="h263_decoder"
2489 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2490 h264_d3d11va_hwaccel_deps="d3d11va"
2491 h264_d3d11va_hwaccel_select="h264_decoder"
2492 h264_dxva2_hwaccel_deps="dxva2"
2493 h264_dxva2_hwaccel_select="h264_decoder"
2494 h264_mmal_decoder_deps="mmal"
2495 h264_mmal_decoder_select="mmal"
2496 h264_mmal_hwaccel_deps="mmal"
2497 h264_qsv_hwaccel_deps="libmfx"
2498 h264_vaapi_hwaccel_deps="vaapi"
2499 h264_vaapi_hwaccel_select="h264_decoder"
2500 h264_vda_decoder_deps="vda"
2501 h264_vda_decoder_select="h264_decoder"
2502 h264_vda_hwaccel_deps="vda"
2503 h264_vda_hwaccel_select="h264_decoder"
2504 h264_vda_old_hwaccel_deps="vda"
2505 h264_vda_old_hwaccel_select="h264_decoder"
2506 h264_vdpau_decoder_deps="vdpau"
2507 h264_vdpau_decoder_select="h264_decoder"
2508 h264_vdpau_hwaccel_deps="vdpau"
2509 h264_vdpau_hwaccel_select="h264_decoder"
2510 h264_videotoolbox_hwaccel_deps="videotoolbox"
2511 h264_videotoolbox_hwaccel_select="h264_decoder"
2512 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2513 hevc_d3d11va_hwaccel_select="hevc_decoder"
2514 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2515 hevc_dxva2_hwaccel_select="hevc_decoder"
2516 hevc_qsv_hwaccel_deps="libmfx"
2517 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2518 hevc_vaapi_hwaccel_select="hevc_decoder"
2519 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2520 hevc_vdpau_hwaccel_select="hevc_decoder"
2521 mpeg_vdpau_decoder_deps="vdpau"
2522 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2523 mpeg_xvmc_hwaccel_deps="xvmc"
2524 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2525 mpeg1_vdpau_decoder_deps="vdpau"
2526 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2527 mpeg1_vdpau_hwaccel_deps="vdpau"
2528 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2529 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2530 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2531 mpeg1_xvmc_hwaccel_deps="xvmc"
2532 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2533 mpeg2_crystalhd_decoder_select="crystalhd"
2534 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2535 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2536 mpeg2_dxva2_hwaccel_deps="dxva2"
2537 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2538 mpeg2_mmal_decoder_deps="mmal"
2539 mpeg2_mmal_decoder_select="mmal"
2540 mpeg2_mmal_hwaccel_deps="mmal"
2541 mpeg2_qsv_hwaccel_deps="libmfx"
2542 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2543 mpeg2_vaapi_hwaccel_deps="vaapi"
2544 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2545 mpeg2_vdpau_hwaccel_deps="vdpau"
2546 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2548 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2549 mpeg2_xvmc_hwaccel_deps="xvmc"
2550 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2551 mpeg4_crystalhd_decoder_select="crystalhd"
2552 mpeg4_mmal_decoder_deps="mmal"
2553 mpeg4_mmal_decoder_select="mmal"
2554 mpeg4_mmal_hwaccel_deps="mmal"
2555 mpeg4_vaapi_hwaccel_deps="vaapi"
2556 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2557 mpeg4_vdpau_decoder_deps="vdpau"
2558 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2559 mpeg4_vdpau_hwaccel_deps="vdpau"
2560 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2561 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2562 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2563 msmpeg4_crystalhd_decoder_select="crystalhd"
2564 vc1_crystalhd_decoder_select="crystalhd"
2565 vc1_d3d11va_hwaccel_deps="d3d11va"
2566 vc1_d3d11va_hwaccel_select="vc1_decoder"
2567 vc1_dxva2_hwaccel_deps="dxva2"
2568 vc1_dxva2_hwaccel_select="vc1_decoder"
2569 vc1_mmal_decoder_deps="mmal"
2570 vc1_mmal_decoder_select="mmal"
2571 vc1_mmal_hwaccel_deps="mmal"
2572 vc1_qsv_hwaccel_deps="libmfx"
2573 vc1_qsv_hwaccel_select="qsvdec_vc1"
2574 vc1_vaapi_hwaccel_deps="vaapi"
2575 vc1_vaapi_hwaccel_select="vc1_decoder"
2576 vc1_vdpau_decoder_deps="vdpau"
2577 vc1_vdpau_decoder_select="vc1_decoder"
2578 vc1_vdpau_hwaccel_deps="vdpau"
2579 vc1_vdpau_hwaccel_select="vc1_decoder"
2580 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2581 vp9_d3d11va_hwaccel_select="vp9_decoder"
2582 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2583 vp9_dxva2_hwaccel_select="vp9_decoder"
2584 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2585 vp9_vaapi_hwaccel_select="vp9_decoder"
2586 wmv3_crystalhd_decoder_select="crystalhd"
2587 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2588 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2589 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2590 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2591 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2592
2593 # parsers
2594 h264_parser_select="h264_decoder"
2595 hevc_parser_select="golomb"
2596 mpegvideo_parser_select="mpegvideo"
2597 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2598 vc1_parser_select="mpegvideo startcode vc1_decoder"
2599
2600 # bitstream_filters
2601 mjpeg2jpeg_bsf_select="jpegtables"
2602
2603 # external libraries
2604 chromaprint_muxer_deps="chromaprint"
2605 libcelt_decoder_deps="libcelt"
2606 libdcadec_decoder_deps="libdcadec"
2607 libfaac_encoder_deps="libfaac"
2608 libfaac_encoder_select="audio_frame_queue"
2609 libfdk_aac_decoder_deps="libfdk_aac"
2610 libfdk_aac_encoder_deps="libfdk_aac"
2611 libfdk_aac_encoder_select="audio_frame_queue"
2612 libgme_demuxer_deps="libgme"
2613 libgsm_decoder_deps="libgsm"
2614 libgsm_encoder_deps="libgsm"
2615 libgsm_ms_decoder_deps="libgsm"
2616 libgsm_ms_encoder_deps="libgsm"
2617 libilbc_decoder_deps="libilbc"
2618 libilbc_encoder_deps="libilbc"
2619 libkvazaar_encoder_deps="libkvazaar"
2620 libmodplug_demuxer_deps="libmodplug"
2621 libmp3lame_encoder_deps="libmp3lame"
2622 libmp3lame_encoder_select="audio_frame_queue"
2623 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2624 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2625 libopencore_amrnb_encoder_select="audio_frame_queue"
2626 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2627 libopenh264_encoder_deps="libopenh264"
2628 libopenjpeg_decoder_deps="libopenjpeg"
2629 libopenjpeg_encoder_deps="libopenjpeg"
2630 libopus_decoder_deps="libopus"
2631 libopus_encoder_deps="libopus"
2632 libopus_encoder_select="audio_frame_queue"
2633 libschroedinger_decoder_deps="libschroedinger"
2634 libschroedinger_encoder_deps="libschroedinger"
2635 libshine_encoder_deps="libshine"
2636 libshine_encoder_select="audio_frame_queue"
2637 libspeex_decoder_deps="libspeex"
2638 libspeex_encoder_deps="libspeex"
2639 libspeex_encoder_select="audio_frame_queue"
2640 libtheora_encoder_deps="libtheora"
2641 libtwolame_encoder_deps="libtwolame"
2642 libutvideo_decoder_deps="libutvideo"
2643 libutvideo_encoder_deps="libutvideo"
2644 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2645 libvorbis_decoder_deps="libvorbis"
2646 libvorbis_encoder_deps="libvorbis"
2647 libvorbis_encoder_select="audio_frame_queue"
2648 libvpx_vp8_decoder_deps="libvpx"
2649 libvpx_vp8_encoder_deps="libvpx"
2650 libvpx_vp9_decoder_deps="libvpx"
2651 libvpx_vp9_encoder_deps="libvpx"
2652 libwavpack_encoder_deps="libwavpack"
2653 libwebp_encoder_deps="libwebp"
2654 libwebp_anim_encoder_deps="libwebp"
2655 libx262_encoder_deps="libx262"
2656 libx264_encoder_deps="libx264"
2657 libx264rgb_encoder_deps="libx264"
2658 libx264rgb_encoder_select="libx264_encoder"
2659 libx265_encoder_deps="libx265"
2660 libxavs_encoder_deps="libxavs"
2661 libxvid_encoder_deps="libxvid"
2662 libzvbi_teletext_decoder_deps="libzvbi"
2663 nvenc_encoder_deps="nvenc"
2664 nvenc_h264_encoder_deps="nvenc"
2665 nvenc_hevc_encoder_deps="nvenc"
2666
2667 # demuxers / muxers
2668 ac3_demuxer_select="ac3_parser"
2669 asf_demuxer_select="riffdec"
2670 asf_o_demuxer_select="riffdec"
2671 asf_muxer_select="riffenc"
2672 asf_stream_muxer_select="asf_muxer"
2673 avi_demuxer_select="riffdec exif"
2674 avi_muxer_select="riffenc"
2675 avisynth_demuxer_deps="avisynth"
2676 avisynth_demuxer_select="riffdec"
2677 caf_demuxer_select="riffdec"
2678 dash_muxer_select="mp4_muxer"
2679 dirac_demuxer_select="dirac_parser"
2680 dts_demuxer_select="dca_parser"
2681 dtshd_demuxer_select="dca_parser"
2682 dv_demuxer_select="dvprofile"
2683 dv_muxer_select="dvprofile"
2684 dxa_demuxer_select="riffdec"
2685 eac3_demuxer_select="ac3_parser"
2686 f4v_muxer_select="mov_muxer"
2687 flac_demuxer_select="flac_parser"
2688 hds_muxer_select="flv_muxer"
2689 hls_muxer_select="mpegts_muxer"
2690 image2_alias_pix_demuxer_select="image2_demuxer"
2691 image2_brender_pix_demuxer_select="image2_demuxer"
2692 ipod_muxer_select="mov_muxer"
2693 ismv_muxer_select="mov_muxer"
2694 libnut_demuxer_deps="libnut"
2695 libnut_muxer_deps="libnut"
2696 matroska_audio_muxer_select="matroska_muxer"
2697 matroska_demuxer_select="riffdec"
2698 matroska_demuxer_suggest="bzlib lzo zlib"
2699 matroska_muxer_select="riffenc"
2700 mmf_muxer_select="riffenc"
2701 mov_demuxer_select="riffdec"
2702 mov_demuxer_suggest="zlib"
2703 mov_muxer_select="riffenc rtpenc_chain"
2704 mp3_demuxer_select="mpegaudio_parser"
2705 mp4_muxer_select="mov_muxer"
2706 mpegts_muxer_select="adts_muxer latm_muxer"
2707 mpegtsraw_demuxer_select="mpegts_demuxer"
2708 mxf_d10_muxer_select="mxf_muxer"
2709 mxf_opatom_muxer_select="mxf_muxer"
2710 nut_muxer_select="riffenc"
2711 nuv_demuxer_select="riffdec"
2712 oga_muxer_select="ogg_muxer"
2713 ogg_demuxer_select="dirac_parse"
2714 opus_muxer_select="ogg_muxer"
2715 psp_muxer_select="mov_muxer"
2716 rtp_demuxer_select="sdp_demuxer"
2717 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2718 rtsp_demuxer_select="http_protocol rtpdec"
2719 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2720 sap_demuxer_select="sdp_demuxer"
2721 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2722 sdp_demuxer_select="rtpdec"
2723 smoothstreaming_muxer_select="ismv_muxer"
2724 spdif_muxer_select="aac_parser"
2725 spx_muxer_select="ogg_muxer"
2726 swf_demuxer_suggest="zlib"
2727 tak_demuxer_select="tak_parser"
2728 tg2_muxer_select="mov_muxer"
2729 tgp_muxer_select="mov_muxer"
2730 vobsub_demuxer_select="mpegps_demuxer"
2731 w64_demuxer_select="wav_demuxer"
2732 w64_muxer_select="wav_muxer"
2733 wav_demuxer_select="riffdec"
2734 wav_muxer_select="riffenc"
2735 webm_muxer_select="riffenc"
2736 webm_dash_manifest_demuxer_select="matroska_demuxer"
2737 wtv_demuxer_select="riffdec"
2738 wtv_muxer_select="riffenc"
2739 xmv_demuxer_select="riffdec"
2740 xwma_demuxer_select="riffdec"
2741
2742 # indevs / outdevs
2743 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2744 alsa_outdev_deps="alsa_asoundlib_h"
2745 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2746 avfoundation_indev_select="avfoundation"
2747 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2748 caca_outdev_deps="libcaca"
2749 decklink_indev_deps="decklink pthreads"
2750 decklink_indev_extralibs="-lstdc++"
2751 decklink_outdev_deps="decklink pthreads"
2752 decklink_outdev_extralibs="-lstdc++"
2753 dshow_indev_deps="IBaseFilter"
2754 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2755 dv1394_indev_deps="dv1394"
2756 dv1394_indev_select="dv_demuxer"
2757 fbdev_indev_deps="linux_fb_h"
2758 fbdev_outdev_deps="linux_fb_h"
2759 gdigrab_indev_deps="CreateDIBSection"
2760 gdigrab_indev_extralibs="-lgdi32"
2761 gdigrab_indev_select="bmp_decoder"
2762 iec61883_indev_deps="libiec61883"
2763 jack_indev_deps="jack_jack_h"
2764 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2765 lavfi_indev_deps="avfilter"
2766 libcdio_indev_deps="libcdio"
2767 libdc1394_indev_deps="libdc1394"
2768 libv4l2_indev_deps="libv4l2"
2769 openal_indev_deps="openal"
2770 opengl_outdev_deps="opengl"
2771 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2772 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2773 pulse_indev_deps="libpulse"
2774 pulse_outdev_deps="libpulse"
2775 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2776 qtkit_indev_select="qtkit"
2777 sdl_outdev_deps="sdl"
2778 sndio_indev_deps="sndio_h"
2779 sndio_outdev_deps="sndio_h"
2780 v4l_indev_deps="linux_videodev_h"
2781 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2782 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2783 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2784 vfwcap_indev_extralibs="-lavicap32"
2785 x11grab_indev_deps="x11grab"
2786 x11grab_xcb_indev_deps="libxcb"
2787 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2788 xv_outdev_extralibs="-lXv -lX11 -lXext"
2789
2790 # protocols
2791 async_protocol_deps="threads"
2792 bluray_protocol_deps="libbluray"
2793 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2794 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2795 ffrtmpcrypt_protocol_select="tcp_protocol"
2796 ffrtmphttp_protocol_deps="!librtmp_protocol"
2797 ffrtmphttp_protocol_select="http_protocol"
2798 ftp_protocol_select="tcp_protocol"
2799 gopher_protocol_select="network"
2800 http_protocol_select="tcp_protocol"
2801 httpproxy_protocol_select="tcp_protocol"
2802 https_protocol_select="tls_protocol"
2803 icecast_protocol_select="http_protocol"
2804 librtmp_protocol_deps="librtmp"
2805 librtmpe_protocol_deps="librtmp"
2806 librtmps_protocol_deps="librtmp"
2807 librtmpt_protocol_deps="librtmp"
2808 librtmpte_protocol_deps="librtmp"
2809 libsmbclient_protocol_deps="libsmbclient gplv3"
2810 libssh_protocol_deps="libssh"
2811 mmsh_protocol_select="http_protocol"
2812 mmst_protocol_select="network"
2813 rtmp_protocol_deps="!librtmp_protocol"
2814 rtmp_protocol_select="tcp_protocol"
2815 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2816 rtmps_protocol_deps="!librtmp_protocol"
2817 rtmps_protocol_select="tls_protocol"
2818 rtmpt_protocol_select="ffrtmphttp_protocol"
2819 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2820 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2821 rtp_protocol_select="udp_protocol"
2822 sctp_protocol_deps="struct_sctp_event_subscribe"
2823 sctp_protocol_select="network"
2824 srtp_protocol_select="rtp_protocol"
2825 tcp_protocol_select="network"
2826 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2827 tls_gnutls_protocol_select="tcp_protocol"
2828 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2829 tls_openssl_protocol_select="tcp_protocol"
2830 tls_schannel_protocol_deps="schannel"
2831 tls_schannel_protocol_select="tcp_protocol"
2832 tls_securetransport_protocol_deps="securetransport"
2833 tls_securetransport_protocol_select="tcp_protocol"
2834 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2835 udp_protocol_select="network"
2836 udplite_protocol_select="network"
2837 unix_protocol_deps="sys_un_h"
2838 unix_protocol_select="network"
2839
2840 # filters
2841 afftfilt_filter_deps="avcodec"
2842 afftfilt_filter_select="fft"
2843 amovie_filter_deps="avcodec avformat"
2844 aresample_filter_deps="swresample"
2845 ass_filter_deps="libass"
2846 asyncts_filter_deps="avresample"
2847 atempo_filter_deps="avcodec"
2848 atempo_filter_select="rdft"
2849 azmq_filter_deps="libzmq"
2850 blackframe_filter_deps="gpl"
2851 boxblur_filter_deps="gpl"
2852 bs2b_filter_deps="libbs2b"
2853 colormatrix_filter_deps="gpl"
2854 cover_rect_filter_deps="avcodec avformat gpl"
2855 cropdetect_filter_deps="gpl"
2856 delogo_filter_deps="gpl"
2857 deshake_filter_select="pixelutils"
2858 drawtext_filter_deps="libfreetype"
2859 ebur128_filter_deps="gpl"
2860 eq_filter_deps="gpl"
2861 fftfilt_filter_deps="avcodec"
2862 fftfilt_filter_select="rdft"
2863 find_rect_filter_deps="avcodec avformat gpl"
2864 flite_filter_deps="libflite"
2865 frei0r_filter_deps="frei0r dlopen"
2866 frei0r_src_filter_deps="frei0r dlopen"
2867 fspp_filter_deps="gpl"
2868 geq_filter_deps="gpl"
2869 histeq_filter_deps="gpl"
2870 hqdn3d_filter_deps="gpl"
2871 interlace_filter_deps="gpl"
2872 kerndeint_filter_deps="gpl"
2873 ladspa_filter_deps="ladspa dlopen"
2874 mcdeint_filter_deps="avcodec gpl"
2875 movie_filter_deps="avcodec avformat"
2876 mpdecimate_filter_deps="gpl"
2877 mpdecimate_filter_select="pixelutils"
2878 mptestsrc_filter_deps="gpl"
2879 negate_filter_deps="lut_filter"
2880 nnedi_filter_deps="gpl"
2881 ocr_filter_deps="libtesseract"
2882 ocv_filter_deps="libopencv"
2883 owdenoise_filter_deps="gpl"
2884 pan_filter_deps="swresample"
2885 perspective_filter_deps="gpl"
2886 phase_filter_deps="gpl"
2887 pp7_filter_deps="gpl"
2888 pp_filter_deps="gpl postproc"
2889 pullup_filter_deps="gpl"
2890 removelogo_filter_deps="avcodec avformat swscale"
2891 repeatfields_filter_deps="gpl"
2892 resample_filter_deps="avresample"
2893 rubberband_filter_deps="librubberband"
2894 sab_filter_deps="gpl swscale"
2895 scale2ref_filter_deps="swscale"
2896 scale_filter_deps="swscale"
2897 select_filter_select="pixelutils"
2898 showcqt_filter_deps="avcodec avformat swscale"
2899 showcqt_filter_select="fft"
2900 showfreqs_filter_deps="avcodec"
2901 showfreqs_filter_select="fft"
2902 showspectrum_filter_deps="avcodec"
2903 showspectrum_filter_select="fft"
2904 showspectrumpic_filter_deps="avcodec"
2905 showspectrumpic_filter_select="fft"
2906 smartblur_filter_deps="gpl swscale"
2907 sofalizer_filter_deps="netcdf avcodec"
2908 sofalizer_filter_select="fft"
2909 spectrumsynth_filter_deps="avcodec"
2910 spectrumsynth_filter_select="fft"
2911 spp_filter_deps="gpl avcodec"
2912 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2913 stereo3d_filter_deps="gpl"
2914 subtitles_filter_deps="avformat avcodec libass"
2915 super2xsai_filter_deps="gpl"
2916 pixfmts_super2xsai_test_deps="super2xsai_filter"
2917 tinterlace_filter_deps="gpl"
2918 tinterlace_merge_test_deps="tinterlace_filter"
2919 tinterlace_pad_test_deps="tinterlace_filter"
2920 uspp_filter_deps="gpl avcodec"
2921 vidstabdetect_filter_deps="libvidstab"
2922 vidstabtransform_filter_deps="libvidstab"
2923 zmq_filter_deps="libzmq"
2924 zoompan_filter_deps="swscale"
2925 zscale_filter_deps="libzimg"
2926
2927 # examples
2928 avcodec_example_deps="avcodec avutil"
2929 avio_dir_cmd="avformat avutil"
2930 avio_reading="avformat avcodec avutil"
2931 decoding_encoding_example_deps="avcodec avformat avutil"
2932 demuxing_decoding_example_deps="avcodec avformat avutil"
2933 extract_mvs_example_deps="avcodec avformat avutil"
2934 filter_audio_example_deps="avfilter avutil"
2935 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2936 filtering_video_example_deps="avfilter avcodec avformat avutil"
2937 metadata_example_deps="avformat avutil"
2938 muxing_example_deps="avcodec avformat avutil swscale"
2939 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2940 remuxing_example_deps="avcodec avformat avutil"
2941 resampling_audio_example_deps="avutil swresample"
2942 scaling_video_example_deps="avutil swscale"
2943 transcode_aac_example_deps="avcodec avformat swresample"
2944 transcoding_example_deps="avfilter avcodec avformat avutil"
2945
2946 # libraries, in linking order
2947 avcodec_deps="avutil"
2948 avdevice_deps="avformat avcodec avutil"
2949 avfilter_deps="avutil"
2950 avformat_deps="avcodec avutil"
2951 avresample_deps="avutil"
2952 postproc_deps="avutil gpl"
2953 swresample_deps="avutil"
2954 swscale_deps="avutil"
2955
2956 # programs
2957 ffmpeg_deps="avcodec avfilter avformat swresample"
2958 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2959                null_filter
2960                setpts_filter trim_filter"
2961 ffplay_deps="avcodec avformat swscale swresample sdl"
2962 ffplay_libs='$sdl_libs'
2963 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2964 ffprobe_deps="avcodec avformat"
2965 ffserver_deps="avformat fork sarestart"
2966 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2967
2968 # documentation
2969 podpages_deps="perl"
2970 manpages_deps="perl pod2man"
2971 htmlpages_deps="perl"
2972 htmlpages_deps_any="makeinfo_html texi2html"
2973 txtpages_deps="perl makeinfo"
2974 doc_deps_any="manpages htmlpages podpages txtpages"
2975
2976 # default parameters
2977
2978 logfile="config.log"
2979
2980 # installation paths
2981 prefix_default="/usr/local"
2982 bindir_default='${prefix}/bin'
2983 datadir_default='${prefix}/share/ffmpeg'
2984 docdir_default='${prefix}/share/doc/ffmpeg'
2985 incdir_default='${prefix}/include'
2986 libdir_default='${prefix}/lib'
2987 mandir_default='${prefix}/share/man'
2988
2989 # toolchain
2990 ar_default="ar"
2991 cc_default="gcc"
2992 cxx_default="g++"
2993 host_cc_default="gcc"
2994 cp_f="cp -f"
2995 doxygen_default="doxygen"
2996 install="install"
2997 ln_s="ln -s -f"
2998 nm_default="nm -g"
2999 objformat="elf"
3000 pkg_config_default=pkg-config
3001 ranlib_default="ranlib"
3002 strip_default="strip"
3003 yasmexe_default="yasm"
3004 windres_default="windres"
3005
3006 # OS
3007 target_os_default=$(tolower $(uname -s))
3008 host_os=$target_os_default
3009
3010 # machine
3011 if test "$target_os_default" = aix; then
3012     arch_default=$(uname -p)
3013     strip_default="strip -X32_64"
3014 else
3015     arch_default=$(uname -m)
3016 fi
3017 cpu="generic"
3018 intrinsics="none"
3019
3020 # configurable options
3021 enable $PROGRAM_LIST
3022 enable $DOCUMENT_LIST
3023 enable $EXAMPLE_LIST
3024 enable $(filter_out avresample $LIBRARY_LIST)
3025 enable stripping
3026
3027 enable asm
3028 enable debug
3029 enable doc
3030 enable faan faandct faanidct
3031 enable optimizations
3032 enable runtime_cpudetect
3033 enable safe_bitstream_reader
3034 enable static
3035 enable swscale_alpha
3036 enable valgrind_backtrace
3037
3038 sws_max_filter_size_default=256
3039 set_default sws_max_filter_size
3040
3041 # Enable hwaccels by default.
3042 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3043 enable xlib
3044
3045 # build settings
3046 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3047 LIBPREF="lib"
3048 LIBSUF=".a"
3049 FULLNAME='$(NAME)$(BUILDSUF)'
3050 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3051 SLIBPREF="lib"
3052 SLIBSUF=".so"
3053 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3054 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3055 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3056 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3057 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3058 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3059
3060 asflags_filter=echo
3061 cflags_filter=echo
3062 ldflags_filter=echo
3063
3064 AS_C='-c'
3065 AS_O='-o $@'
3066 CC_C='-c'
3067 CC_E='-E -o $@'
3068 CC_O='-o $@'
3069 CXX_C='-c'
3070 CXX_O='-o $@'
3071 OBJCC_C='-c'
3072 OBJCC_E='-E -o $@'
3073 OBJCC_O='-o $@'
3074 LD_O='-o $@'
3075 LD_LIB='-l%'
3076 LD_PATH='-L'
3077 HOSTCC_C='-c'
3078 HOSTCC_E='-E -o $@'
3079 HOSTCC_O='-o $@'
3080 HOSTLD_O='-o $@'
3081
3082 host_libs='-lm'
3083 host_cflags_filter=echo
3084 host_ldflags_filter=echo
3085
3086 target_path='$(CURDIR)'
3087
3088 # since the object filename is not given with the -MM flag, the compiler
3089 # is only able to print the basename, and we must add the path ourselves
3090 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3091 DEPFLAGS='-MM'
3092
3093 # find source path
3094 if test -f configure; then
3095     source_path=.
3096 else
3097     source_path=$(cd $(dirname "$0"); pwd)
3098     case "$source_path" in
3099         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3100     esac
3101     test -e "$source_path/config.h" &&
3102         die "Out of tree builds are impossible with config.h in source dir."
3103 fi
3104
3105 for v in "$@"; do
3106     r=${v#*=}
3107     l=${v%"$r"}
3108     r=$(sh_quote "$r")
3109     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3110 done
3111
3112 find_things(){
3113     thing=$1
3114     pattern=$2
3115     file=$source_path/$3
3116     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3117 }
3118
3119 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3120 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3121 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3122 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3123 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3124 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3125 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3126 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3127 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3128 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3129 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3130
3131 ALL_COMPONENTS="
3132     $BSF_LIST
3133     $DECODER_LIST
3134     $DEMUXER_LIST
3135     $ENCODER_LIST
3136     $FILTER_LIST
3137     $HWACCEL_LIST
3138     $INDEV_LIST
3139     $MUXER_LIST
3140     $OUTDEV_LIST
3141     $PARSER_LIST
3142     $PROTOCOL_LIST
3143 "
3144
3145 for n in $COMPONENT_LIST; do
3146     v=$(toupper ${n%s})_LIST
3147     eval enable \$$v
3148     eval ${n}_if_any="\$$v"
3149 done
3150
3151 enable $ARCH_EXT_LIST
3152
3153 die_unknown(){
3154     echo "Unknown option \"$1\"."
3155     echo "See $0 --help for available options."
3156     exit 1
3157 }
3158
3159 print_in_columns() {
3160     cols=$(expr $ncols / 24)
3161     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3162 }
3163
3164 show_list() {
3165     suffix=_$1
3166     shift
3167     echo $* | sed s/$suffix//g | print_in_columns
3168     exit 0
3169 }
3170
3171 rand_list(){
3172     IFS=', '
3173     set -- $*
3174     unset IFS
3175     for thing; do
3176         comp=${thing%:*}
3177         prob=${thing#$comp}
3178         prob=${prob#:}
3179         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3180         echo "prob ${prob:-0.5}"
3181         printf '%s\n' $comp
3182     done
3183 }
3184
3185 do_random(){
3186     action=$1
3187     shift
3188     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3189     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3190 }
3191
3192 for opt do
3193     optval="${opt#*=}"
3194     case "$opt" in
3195         --extra-ldflags=*)
3196             add_ldflags $optval
3197         ;;
3198         --extra-ldexeflags=*)
3199             add_ldexeflags $optval
3200         ;;
3201         --extra-ldlibflags=*)
3202             add_ldlibflags $optval
3203         ;;
3204         --extra-libs=*)
3205             add_extralibs $optval
3206         ;;
3207         --disable-devices)
3208             disable $INDEV_LIST $OUTDEV_LIST
3209         ;;
3210         --enable-debug=*)
3211             debuglevel="$optval"
3212         ;;
3213         --disable-programs)
3214             disable $PROGRAM_LIST
3215         ;;
3216         --disable-everything)
3217             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3218         ;;
3219         --disable-all)
3220             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3221             disable $LIBRARY_LIST $PROGRAM_LIST doc
3222             enable avutil
3223         ;;
3224         --enable-random|--disable-random)
3225             action=${opt%%-random}
3226             do_random ${action#--} $COMPONENT_LIST
3227         ;;
3228         --enable-random=*|--disable-random=*)
3229             action=${opt%%-random=*}
3230             do_random ${action#--} $optval
3231         ;;
3232         --enable-*=*|--disable-*=*)
3233             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3234             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3235             eval list=\$$(toupper $thing)_LIST
3236             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3237             list=$(filter "$name" $list)
3238             [ "$list" = "" ] && warn "Option $opt did not match anything"
3239             $action $list
3240         ;;
3241         --enable-?*|--disable-?*)
3242             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3243             if is_in $option $COMPONENT_LIST; then
3244                 test $action = disable && action=unset
3245                 eval $action \$$(toupper ${option%s})_LIST
3246             elif is_in $option $CMDLINE_SELECT; then
3247                 $action $option
3248             else
3249                 die_unknown $opt
3250             fi
3251         ;;
3252         --list-*)
3253             NAME="${opt#--list-}"
3254             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3255             NAME=${NAME%s}
3256             eval show_list $NAME \$$(toupper $NAME)_LIST
3257         ;;
3258         --help|-h) show_help
3259         ;;
3260         --fatal-warnings) enable fatal_warnings
3261         ;;
3262         *)
3263             optname="${opt%%=*}"
3264             optname="${optname#--}"
3265             optname=$(echo "$optname" | sed 's/-/_/g')
3266             if is_in $optname $CMDLINE_SET; then
3267                 eval $optname='$optval'
3268             elif is_in $optname $CMDLINE_APPEND; then
3269                 append $optname "$optval"
3270             else
3271                 die_unknown $opt
3272             fi
3273         ;;
3274     esac
3275 done
3276
3277 for e in $env; do
3278     eval "export $e"
3279 done
3280
3281 disabled logging && logfile=/dev/null
3282
3283 # Disable all the library-specific components if the library itself
3284 # is disabled, see AVCODEC_LIST and following _LIST variables.
3285
3286 disable_components(){
3287     disabled ${1} && disable $(
3288         eval components="\$$(toupper ${1})_COMPONENTS"
3289         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3290     )
3291 }
3292
3293 map 'disable_components $v' $LIBRARY_LIST
3294
3295 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3296 set >> $logfile
3297
3298 test -n "$valgrind" && toolchain="valgrind-memcheck"
3299
3300 case "$toolchain" in
3301     *-asan)
3302         cc_default="${toolchain%-asan}"
3303         add_cflags  -fsanitize=address
3304         add_ldflags -fsanitize=address
3305     ;;
3306     *-tsan)
3307         cc_default="${toolchain%-tsan}"
3308         add_cflags  -fsanitize=thread -pie
3309         add_ldflags -fsanitize=thread -pie
3310         case "$toolchain" in
3311             gcc-tsan)
3312                 add_cflags  -fPIC
3313                 add_ldflags -fPIC
3314                 ;;
3315         esac
3316     ;;
3317     *-usan)
3318         cc_default="${toolchain%-usan}"
3319         add_cflags  -fsanitize=undefined
3320         add_ldflags -fsanitize=undefined
3321     ;;
3322     valgrind-*)
3323         target_exec_default="valgrind"
3324         case "$toolchain" in
3325             valgrind-massif)
3326                 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"
3327                 ;;
3328             valgrind-memcheck)
3329                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3330                 ;;
3331         esac
3332     ;;
3333     msvc)
3334         # Check whether the current MSVC version needs the C99 converter.
3335         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3336         # support enough of C99 to build ffmpeg. Default to the new
3337         # behaviour if the regexp was unable to match anything, since this
3338         # successfully parses the version number of existing supported
3339         # versions that require the converter (MSVC 2010 and 2012).
3340         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3341         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3342             cc_default="cl"
3343         else
3344             cc_default="c99wrap cl"
3345         fi
3346         ld_default="$source_path/compat/windows/mslink"
3347         nm_default="dumpbin -symbols"
3348         ar_default="lib"
3349         case "$arch" in
3350         arm*)
3351             as_default="armasm"
3352             ;;
3353         esac
3354         target_os_default="win32"
3355         # Use a relative path for TMPDIR. This makes sure all the
3356         # ffconf temp files are written with a relative path, avoiding
3357         # issues with msys/win32 path conversion for MSVC parameters
3358         # such as -Fo<file> or -out:<file>.
3359         TMPDIR=.
3360     ;;
3361     icl)
3362         cc_default="icl"
3363         ld_default="xilink"
3364         nm_default="dumpbin -symbols"
3365         ar_default="xilib"
3366         target_os_default="win32"
3367         TMPDIR=.
3368     ;;
3369     gcov)
3370         add_cflags  -fprofile-arcs -ftest-coverage
3371         add_ldflags -fprofile-arcs -ftest-coverage
3372     ;;
3373     hardened)
3374         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3375         add_cflags   -fno-strict-overflow -fstack-protector-all
3376         add_ldflags  -Wl,-z,relro -Wl,-z,now
3377     ;;
3378     ?*)
3379         die "Unknown toolchain $toolchain"
3380     ;;
3381 esac
3382
3383 test -n "$cross_prefix" && enable cross_compile
3384
3385 if enabled cross_compile; then
3386     test -n "$arch" && test -n "$target_os" ||
3387         die "Must specify target arch and OS when cross-compiling"
3388 fi
3389
3390 ar_default="${cross_prefix}${ar_default}"
3391 cc_default="${cross_prefix}${cc_default}"
3392 cxx_default="${cross_prefix}${cxx_default}"
3393 nm_default="${cross_prefix}${nm_default}"
3394 pkg_config_default="${cross_prefix}${pkg_config_default}"
3395 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3396     ranlib_default="${cross_prefix}${ranlib_default} -D"
3397 else
3398     ranlib_default="${cross_prefix}${ranlib_default}"
3399 fi
3400 strip_default="${cross_prefix}${strip_default}"
3401 windres_default="${cross_prefix}${windres_default}"
3402
3403 sysinclude_default="${sysroot}/usr/include"
3404
3405 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3406     target_exec target_os yasmexe
3407 enabled cross_compile || host_cc_default=$cc
3408 set_default host_cc
3409
3410 pkg_config_fail_message=""
3411 if ! $pkg_config --version >/dev/null 2>&1; then
3412     warn "$pkg_config not found, library detection may fail."
3413     pkg_config=false
3414 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3415     pkg_config_fail_message="
3416 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3417 fi
3418
3419 if test $doxygen != $doxygen_default && \
3420   ! $doxygen --version >/dev/null 2>&1; then
3421     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3422 fi
3423
3424 exesuf() {
3425     case $1 in
3426         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3427     esac
3428 }
3429
3430 EXESUF=$(exesuf $target_os)
3431 HOSTEXESUF=$(exesuf $host_os)
3432
3433 # set temporary file name
3434 : ${TMPDIR:=$TEMPDIR}
3435 : ${TMPDIR:=$TMP}
3436 : ${TMPDIR:=/tmp}
3437
3438 if [ -n "$tempprefix" ] ; then
3439     mktemp(){
3440         echo $tempprefix.${HOSTNAME}.${UID}
3441     }
3442 elif ! check_cmd mktemp -u XXXXXX; then
3443     # simple replacement for missing mktemp
3444     # NOT SAFE FOR GENERAL USE
3445     mktemp(){
3446         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3447     }
3448 fi
3449
3450 tmpfile(){
3451     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3452         (set -C; exec > $tmp) 2>/dev/null ||
3453         die "Unable to create temporary file in $TMPDIR."
3454     append TMPFILES $tmp
3455     eval $1=$tmp
3456 }
3457
3458 trap 'rm -f -- $TMPFILES' EXIT
3459
3460 tmpfile TMPASM .asm
3461 tmpfile TMPC   .c
3462 tmpfile TMPCPP .cpp
3463 tmpfile TMPE   $EXESUF
3464 tmpfile TMPH   .h
3465 tmpfile TMPM   .m
3466 tmpfile TMPO   .o
3467 tmpfile TMPS   .S
3468 tmpfile TMPSH  .sh
3469 tmpfile TMPV   .ver
3470
3471 unset -f mktemp
3472
3473 chmod +x $TMPE
3474
3475 # make sure we can execute files in $TMPDIR
3476 cat > $TMPSH 2>> $logfile <<EOF
3477 #! /bin/sh
3478 EOF
3479 chmod +x $TMPSH >> $logfile 2>&1
3480 if ! $TMPSH >> $logfile 2>&1; then
3481     cat <<EOF
3482 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3483 variable to another directory and make sure that it is not mounted noexec.
3484 EOF
3485     die "Sanity test failed."
3486 fi
3487
3488 armasm_flags(){
3489     for flag; do
3490         case $flag in
3491             # Filter out MSVC cl.exe options from cflags that shouldn't
3492             # be passed to gas-preprocessor
3493             -M[TD]*)                                            ;;
3494             *)                  echo $flag                      ;;
3495         esac
3496    done
3497 }
3498
3499 ccc_flags(){
3500     for flag; do
3501         case $flag in
3502             -std=c99)           echo -c99                       ;;
3503             -mcpu=*)            echo -arch ${flag#*=}           ;;
3504             -mieee)             echo -ieee                      ;;
3505             -O*|-fast)          echo $flag                      ;;
3506             -fno-math-errno)    echo -assume nomath_errno       ;;
3507             -g)                 echo -g3                        ;;
3508             -Wall)              echo -msg_enable level2         ;;
3509             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3510             -Wl,*)              echo $flag                      ;;
3511             -f*|-W*)                                            ;;
3512             *)                  echo $flag                      ;;
3513         esac
3514    done
3515 }
3516
3517 cparser_flags(){
3518     for flag; do
3519         case $flag in
3520             -Wno-switch)             echo -Wno-switch-enum ;;
3521             -Wno-format-zero-length) ;;
3522             -Wdisabled-optimization) ;;
3523             -Wno-pointer-sign)       echo -Wno-other ;;
3524             *)                       echo $flag ;;
3525         esac
3526     done
3527 }
3528
3529 msvc_common_flags(){
3530     for flag; do
3531         case $flag in
3532             # In addition to specifying certain flags under the compiler
3533             # specific filters, they must be specified here as well or else the
3534             # generic catch all at the bottom will print the original flag.
3535             -Wall)                ;;
3536             -std=c99)             ;;
3537             # Common flags
3538             -fomit-frame-pointer) ;;
3539             -g)                   echo -Z7 ;;
3540             -fno-math-errno)      ;;
3541             -fno-common)          ;;
3542             -fno-signed-zeros)    ;;
3543             -fPIC)                ;;
3544             -mthumb)              ;;
3545             -march=*)             ;;
3546             -lz)                  echo zlib.lib ;;
3547             -lavifil32)           echo vfw32.lib ;;
3548             -lavicap32)           echo vfw32.lib user32.lib ;;
3549             -lx264)               echo libx264.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 [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$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 $network_extralibs
5253
5254         check_type ws2tcpip.h socklen_t
5255         check_type ws2tcpip.h "struct addrinfo"
5256         check_type ws2tcpip.h "struct group_source_req"
5257         check_type ws2tcpip.h "struct ip_mreq_source"
5258         check_type ws2tcpip.h "struct ipv6_mreq"
5259         check_type winsock2.h "struct pollfd"
5260         check_struct winsock2.h "struct sockaddr" sa_len
5261         check_type ws2tcpip.h "struct sockaddr_in6"
5262         check_type ws2tcpip.h "struct sockaddr_storage"
5263     else
5264         disable network
5265     fi
5266 fi
5267
5268 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5269 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5270 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5271 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5272 check_builtin sarestart signal.h "SA_RESTART"
5273 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5274 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5275 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5276 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5277
5278 case "$custom_allocator" in
5279     jemalloc)
5280         # jemalloc by default does not use a prefix
5281         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5282     ;;
5283     tcmalloc)
5284         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5285         malloc_prefix=tc_
5286     ;;
5287 esac
5288
5289 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5290 check_func  ${malloc_prefix}memalign            && enable memalign
5291 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5292
5293 check_func  access
5294 check_func  arc4random
5295 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5296 check_func  fcntl
5297 check_func  fork
5298 check_func  gethrtime
5299 check_func  getopt
5300 check_func  getrusage
5301 check_func  gettimeofday
5302 check_func  isatty
5303 check_func  mach_absolute_time
5304 check_func  mkstemp
5305 check_func  mmap
5306 check_func  mprotect
5307 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5308 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5309 check_func  sched_getaffinity
5310 check_func  setrlimit
5311 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5312 check_func  strerror_r
5313 check_func  sysconf
5314 check_func  sysctl
5315 check_func  usleep
5316
5317 check_func_headers conio.h kbhit
5318 check_func_headers io.h setmode
5319 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5320 check_func_headers stdlib.h getenv
5321 check_func_headers sys/stat.h lstat
5322
5323 check_func_headers windows.h CoTaskMemFree -lole32
5324 check_func_headers windows.h GetProcessAffinityMask
5325 check_func_headers windows.h GetProcessTimes
5326 check_func_headers windows.h GetSystemTimeAsFileTime
5327 check_func_headers windows.h MapViewOfFile
5328 check_func_headers windows.h PeekNamedPipe
5329 check_func_headers windows.h SetConsoleTextAttribute
5330 check_func_headers windows.h SetConsoleCtrlHandler
5331 check_func_headers windows.h Sleep
5332 check_func_headers windows.h VirtualAlloc
5333 check_struct windows.h "CONDITION_VARIABLE" Ptr
5334 check_func_headers glob.h glob
5335 enabled xlib &&
5336     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5337
5338 check_header dispatch/dispatch.h
5339 check_header direct.h
5340 check_header dirent.h
5341 check_header dlfcn.h
5342 check_header d3d11.h
5343 check_header dxva.h
5344 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5345 check_header io.h
5346 check_header libcrystalhd/libcrystalhd_if.h
5347 check_header mach/mach_time.h
5348 check_header malloc.h
5349 check_header net/udplite.h
5350 check_header poll.h
5351 check_header sys/mman.h
5352 check_header sys/param.h
5353 check_header sys/resource.h
5354 check_header sys/select.h
5355 check_header sys/time.h
5356 check_header sys/un.h
5357 check_header termios.h
5358 check_header unistd.h
5359 check_header valgrind/valgrind.h
5360 check_header vdpau/vdpau.h
5361 check_header vdpau/vdpau_x11.h
5362 check_header VideoDecodeAcceleration/VDADecoder.h
5363 check_header VideoToolbox/VideoToolbox.h
5364 check_header windows.h
5365 check_header X11/extensions/XvMClib.h
5366 check_header asm/types.h
5367
5368 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5369 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5370 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5371 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5372
5373 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5374
5375 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5376 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5377 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5378 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5379 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5380
5381 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5382 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5383
5384 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5385
5386 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5387
5388 if ! disabled w32threads && ! enabled pthreads; then
5389     check_func_headers "windows.h process.h" _beginthreadex &&
5390         enable w32threads || disable w32threads
5391     if ! enabled w32threads && enabled winrt; then
5392         check_func_headers "windows.h" CreateThread &&
5393             enable w32threads || disable w32threads
5394     fi
5395 fi
5396
5397 # check for some common methods of building with pthread support
5398 # do this before the optional library checks as some of them require pthreads
5399 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5400     enable pthreads
5401     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5402         add_cflags -pthread
5403         add_extralibs -pthread
5404     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5405         add_cflags -pthreads
5406         add_extralibs -pthreads
5407     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5408         add_cflags -ldl -pthread
5409         add_extralibs -ldl -pthread
5410     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5411         add_extralibs -lpthreadGC2
5412     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5413         :
5414     elif ! check_func pthread_join && ! check_func pthread_create; then
5415         disable pthreads
5416     fi
5417     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5418 fi
5419
5420
5421 if enabled pthreads; then
5422   check_func pthread_cancel
5423 fi
5424
5425 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5426 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5427 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5428
5429 check_lib math.h sin -lm && LIBM="-lm"
5430 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5431
5432 atan2f_args=2
5433 copysign_args=2
5434 hypot_args=2
5435 ldexpf_args=2
5436 powf_args=2
5437
5438 for func in $MATH_FUNCS; do
5439     eval check_mathfunc $func \${${func}_args:-1}
5440 done
5441
5442 for func in $COMPLEX_FUNCS; do
5443     eval check_complexfunc $func \${${func}_args:-1}
5444 done
5445
5446 # these are off by default, so fail if requested and not available
5447 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5448 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5449                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5450 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5451                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5452                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5453 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5454 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5455 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5456 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5457 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5458 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5459 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5460 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5461 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5462 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5463 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5464                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5465                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5466 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5467 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5468 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5469 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5470                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5471                                  warn "using libfdk without pkg-config"; } }
5472 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"
5473 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5474 enabled fontconfig        && enable libfontconfig
5475 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5476 enabled libfreetype       && require_libfreetype
5477 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5478 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5479 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5480                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5481                                done || die "ERROR: libgsm not found"; }
5482 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5483 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5484 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5485 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5486 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5487 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5488 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5489 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5490 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5491                                require_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5492                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5493 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5494 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5495                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5496                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5497                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5498                                die "ERROR: libopenjpeg not found"; }
5499 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5500 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5501 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5502 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5503 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5504 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5505 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5506                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5507 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5508 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5509 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5510 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5511 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5512 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5513 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5514                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5515                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5516 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5517 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5518 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5519 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5520 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5521
5522 enabled libvpx            && {
5523     enabled libvpx_vp8_decoder && {
5524         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5525             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5526                 die "ERROR: libvpx decoder version must be >=0.9.1";
5527     }
5528     enabled libvpx_vp8_encoder && {
5529         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5530             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5531                 die "ERROR: libvpx encoder version must be >=0.9.7";
5532     }
5533     enabled libvpx_vp9_decoder && {
5534         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5535             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5536                 disable libvpx_vp9_decoder;
5537     }
5538     enabled libvpx_vp9_encoder && {
5539         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5540             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5541                 disable libvpx_vp9_encoder;
5542     }
5543     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5544         die "libvpx enabled but no supported decoders found"
5545     fi
5546 }
5547
5548 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5549 enabled libwebp           && {
5550     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5551     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5552 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5553                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5554                                  warn "using libx264 without pkg-config"; } } &&
5555                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5556                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5557                              { check_cpp_condition x264.h "X264_MPEG2" &&
5558                                enable libx262; }
5559 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5560                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5561                                die "ERROR: libx265 version must be >= 68."; }
5562 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5563 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5564 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5565 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5566 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5567                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5568                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5569 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5570                                 { ! enabled cross_compile && {
5571                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5572                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5573                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5574                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5575                                die "ERROR: mmal not found"; }
5576 enabled mmal &&
5577     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5578      die "ERROR: mmal firmware headers too old")
5579
5580 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5581 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5582                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5583                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5584                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5585 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5586                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5587                                die "ERROR: openal not found"; } &&
5588                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5589                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5590 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5591                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5592                                die "ERROR: opencl not found"; } &&
5593                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5594                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5595                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5596 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5597                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5598                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5599                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5600                                die "ERROR: opengl not found."
5601                              }
5602 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5603                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5604                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5605                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5606                                die "ERROR: openssl not found"; }
5607 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5608
5609 # libdc1394 check
5610 if enabled libdc1394; then
5611     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5612         enable libdc1394_2; } ||
5613     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5614         enable libdc1394_1; } ||
5615     die "ERROR: No version of libdc1394 found "
5616 fi
5617
5618 if enabled gcrypt; then
5619     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5620     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5621         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5622         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5623         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5624             die "ERROR: gcrypt not found"
5625         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5626     else
5627         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5628     fi
5629 fi
5630
5631 if ! disabled sdl; then
5632     SDL_CONFIG="${cross_prefix}sdl-config"
5633     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5634         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5635         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5636         enable sdl
5637     else
5638         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5639             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5640             sdl_libs=$("${SDL_CONFIG}" --libs)
5641             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5642             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5643             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5644             enable sdl
5645         elif enabled sdl ; then
5646             die "ERROR: SDL not found"
5647         else
5648             disable sdl
5649         fi
5650     fi
5651     if test $target_os = "mingw32"; then
5652         sdl_libs="$sdl_libs -mconsole"
5653     fi
5654 fi
5655 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5656
5657 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5658     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5659     enable securetransport; }
5660
5661 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5662                        enable schannel && add_extralibs -lSecur32; }
5663
5664 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5665 enabled makeinfo \
5666     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5667     && enable makeinfo_html || disable makeinfo_html
5668 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5669 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5670 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5671 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5672
5673 check_header linux/fb.h
5674 check_header linux/videodev.h
5675 check_header linux/videodev2.h
5676 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5677
5678 check_header sys/videoio.h
5679 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5680
5681 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5682 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5683 # w32api 3.12 had it defined wrong
5684 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5685
5686 check_type "dshow.h" IBaseFilter
5687
5688 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5689 { check_header dev/bktr/ioctl_meteor.h &&
5690   check_header dev/bktr/ioctl_bt848.h; } ||
5691 { check_header machine/ioctl_meteor.h &&
5692   check_header machine/ioctl_bt848.h; } ||
5693 { check_header dev/video/meteor/ioctl_meteor.h &&
5694   check_header dev/video/bktr/ioctl_bt848.h; } ||
5695 check_header dev/ic/bt8xx.h
5696
5697 check_header sndio.h
5698 if check_struct sys/soundcard.h audio_buf_info bytes; then
5699     enable_safe sys/soundcard.h
5700 else
5701     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5702     #include <sys/soundcard.h>
5703     audio_buf_info abc;
5704 EOF
5705 fi
5706 check_header soundcard.h
5707
5708 enabled_any alsa_indev alsa_outdev &&
5709     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5710
5711 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5712     check_func jack_port_get_latency_range -ljack
5713
5714 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5715
5716 if enabled libcdio; then
5717     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5718     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5719     die "ERROR: No usable libcdio/cdparanoia found"
5720 fi
5721
5722 enabled xlib &&
5723     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5724
5725 if ! disabled libxcb; then
5726     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5727         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5728     } && disable x11grab && enable libxcb
5729
5730 if enabled libxcb; then
5731     disabled libxcb_shm || {
5732         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5733             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5734         } && check_header sys/shm.h && enable libxcb_shm; }
5735
5736     disabled libxcb_xfixes || {
5737         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5738             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5739         } && enable libxcb_xfixes; }
5740
5741     disabled libxcb_shape || {
5742         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5743             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5744         } && enable libxcb_shape; }
5745
5746     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5747     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5748 fi
5749 fi
5750
5751 if enabled x11grab; then
5752     enabled xlib || die "ERROR: Xlib not found"
5753     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5754     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5755 fi
5756
5757 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5758
5759 enabled dxva2api_h &&
5760     check_cc <<EOF && enable dxva2api_cobj
5761 #define _WIN32_WINNT 0x0600
5762 #define COBJMACROS
5763 #include <windows.h>
5764 #include <d3d9.h>
5765 #include <dxva2api.h>
5766 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5767 EOF
5768
5769 enabled vaapi &&
5770     check_lib va/va.h vaInitialize -lva ||
5771     disable vaapi
5772
5773 enabled vaapi && enabled xlib &&
5774     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5775     enable vaapi_x11
5776
5777 enabled vdpau &&
5778     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5779     disable vdpau
5780
5781 enabled vdpau && enabled xlib &&
5782     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5783     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5784     enable vdpau_x11
5785
5786 # Funny iconv installations are not unusual, so check it after all flags have been set
5787 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5788
5789 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5790
5791 # add some useful compiler flags if supported
5792 check_cflags -Wdeclaration-after-statement
5793 check_cflags -Wall
5794 check_cflags -Wdisabled-optimization
5795 check_cflags -Wpointer-arith
5796 check_cflags -Wredundant-decls
5797 check_cflags -Wwrite-strings
5798 check_cflags -Wtype-limits
5799 check_cflags -Wundef
5800 check_cflags -Wmissing-prototypes
5801 check_cflags -Wno-pointer-to-int-cast
5802 check_cflags -Wstrict-prototypes
5803 check_cflags -Wempty-body
5804 enabled extra_warnings && check_cflags -Winline
5805 enabled extra_warnings && check_cflags -Wcast-qual
5806
5807 check_disable_warning(){
5808     warning_flag=-W${1#-Wno-}
5809     test_cflags $warning_flag && add_cflags $1
5810 }
5811
5812 check_disable_warning -Wno-parentheses
5813 check_disable_warning -Wno-switch
5814 check_disable_warning -Wno-format-zero-length
5815 check_disable_warning -Wno-pointer-sign
5816 check_disable_warning -Wno-unused-const-variable
5817
5818 # add some linker flags
5819 check_ldflags -Wl,--warn-common
5820 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5821 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5822 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5823 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5824
5825 # add some strip flags
5826 # -wN '..@*' is more selective than -x, but not available everywhere.
5827 check_stripflags -wN \'..@*\' || check_stripflags -x
5828
5829 enabled neon_clobber_test &&
5830     check_ldflags -Wl,--wrap,avcodec_open2              \
5831                   -Wl,--wrap,avcodec_decode_audio4      \
5832                   -Wl,--wrap,avcodec_decode_video2      \
5833                   -Wl,--wrap,avcodec_decode_subtitle2   \
5834                   -Wl,--wrap,avcodec_encode_audio2      \
5835                   -Wl,--wrap,avcodec_encode_video2      \
5836                   -Wl,--wrap,avcodec_encode_subtitle    \
5837                   -Wl,--wrap,swr_convert                \
5838                   -Wl,--wrap,avresample_convert ||
5839     disable neon_clobber_test
5840
5841 enabled xmm_clobber_test &&
5842     check_ldflags -Wl,--wrap,avcodec_open2              \
5843                   -Wl,--wrap,avcodec_decode_audio4      \
5844                   -Wl,--wrap,avcodec_decode_video2      \
5845                   -Wl,--wrap,avcodec_decode_subtitle2   \
5846                   -Wl,--wrap,avcodec_encode_audio2      \
5847                   -Wl,--wrap,avcodec_encode_video2      \
5848                   -Wl,--wrap,avcodec_encode_subtitle    \
5849                   -Wl,--wrap,swr_convert                \
5850                   -Wl,--wrap,avresample_convert         \
5851                   -Wl,--wrap,sws_scale ||
5852     disable xmm_clobber_test
5853
5854 echo "X { local: *; };" > $TMPV
5855 if test_ldflags -Wl,--version-script,$TMPV; then
5856     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5857 elif test_ldflags -Wl,-M,$TMPV; then
5858     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5859 fi
5860
5861 check_cc <<EOF && enable symver_asm_label
5862 void ff_foo(void) __asm__ ("av_foo@VERSION");
5863 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5864 EOF
5865     check_cc <<EOF && enable symver_gnu_asm
5866 __asm__(".symver ff_foo,av_foo@VERSION");
5867 void ff_foo(void) {}
5868 EOF
5869
5870 if [ -z "$optflags" ]; then
5871     if enabled small; then
5872         optflags=$cflags_size
5873     elif enabled optimizations; then
5874         optflags=$cflags_speed
5875     else
5876         optflags=$cflags_noopt
5877     fi
5878 fi
5879
5880 check_optflags(){
5881     check_cflags "$@"
5882     enabled lto && check_ldflags "$@"
5883 }
5884
5885
5886 if enabled lto; then
5887     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5888     check_cflags  -flto
5889     check_ldflags -flto $cpuflags
5890     disable inline_asm_direct_symbol_refs
5891 fi
5892
5893 check_optflags $optflags
5894 check_optflags -fno-math-errno
5895 check_optflags -fno-signed-zeros
5896
5897 enabled ftrapv && check_cflags -ftrapv
5898
5899 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5900 int x;
5901 EOF
5902
5903
5904 if enabled icc; then
5905     # Just warnings, no remarks
5906     check_cflags -w1
5907     # -wd: Disable following warnings
5908     # 144, 167, 556: -Wno-pointer-sign
5909     # 188: enumerated type mixed with another type
5910     # 1292: attribute "foo" ignored
5911     # 1419: external declaration in primary source file
5912     # 10006: ignoring unknown option -fno-signed-zeros
5913     # 10148: ignoring unknown option -Wno-parentheses
5914     # 10156: ignoring option '-W'; no argument required
5915     # 13200: No EMMS instruction before call to function
5916     # 13203: No EMMS instruction before return from function
5917     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5918     # 11030: Warning unknown option --as-needed
5919     # 10156: ignoring option '-export'; no argument required
5920     check_ldflags -wd10156,11030
5921     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5922     enable ebp_available
5923     # The test above does not test linking
5924     enabled lto && disable symver_asm_label
5925     if enabled x86_32; then
5926         icc_version=$($cc -dumpversion)
5927         test ${icc_version%%.*} -ge 11 &&
5928             check_cflags -falign-stack=maintain-16-byte ||
5929             disable aligned_stack
5930     fi
5931 elif enabled ccc; then
5932     # disable some annoying warnings
5933     add_cflags -msg_disable bitnotint
5934     add_cflags -msg_disable mixfuncvoid
5935     add_cflags -msg_disable nonstandcast
5936     add_cflags -msg_disable unsupieee
5937 elif enabled gcc; then
5938     case $gcc_basever in
5939         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
5940         4.*)                 check_optflags -fno-tree-vectorize ;;
5941         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
5942     esac
5943     check_cflags -Werror=format-security
5944     check_cflags -Werror=implicit-function-declaration
5945     check_cflags -Werror=missing-prototypes
5946     check_cflags -Werror=return-type
5947     check_cflags -Werror=vla
5948     check_cflags -Wformat
5949     check_cflags -fdiagnostics-color=auto
5950     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5951 elif enabled llvm_gcc; then
5952     check_cflags -mllvm -stack-alignment=16
5953 elif enabled clang; then
5954     check_cflags -mllvm -stack-alignment=16
5955     check_cflags -Qunused-arguments
5956     check_cflags -Werror=implicit-function-declaration
5957     check_cflags -Werror=missing-prototypes
5958     check_cflags -Werror=return-type
5959 elif enabled cparser; then
5960     add_cflags -Wno-missing-variable-declarations
5961     add_cflags -Wno-empty-statement
5962 elif enabled armcc; then
5963     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5964     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5965     # 2523: use of inline assembly is deprecated
5966     add_cflags -W${armcc_opt},--diag_suppress=2523
5967     add_cflags -W${armcc_opt},--diag_suppress=1207
5968     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5969     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5970     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5971     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5972 elif enabled tms470; then
5973     add_cflags -pds=824 -pds=837
5974     disable inline_asm
5975 elif enabled pathscale; then
5976     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5977 elif enabled_any msvc icl; then
5978     enabled x86_32 && disable aligned_stack
5979     enabled_all x86_32 debug && add_cflags -Oy-
5980     enabled debug && add_ldflags -debug
5981     enable pragma_deprecated
5982     if enabled icl; then
5983         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5984         # (correctly) on icl 13.x.
5985         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5986             add_cflags -Qansi-alias
5987         # Some inline asm is not compilable in debug
5988         if enabled debug; then
5989             disable ebp_available
5990             disable ebx_available
5991         fi
5992     fi
5993     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5994     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5995     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5996     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5997     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5998     # MSVC 2013 and newer can handle it fine.
5999     # If this declspec fails, force including stdlib.h before the restrict redefinition
6000     # happens in config.h.
6001     if [ $_restrict != restrict ]; then
6002         check_cc <<EOF || add_cflags -FIstdlib.h
6003 __declspec($_restrict) void* foo(int);
6004 EOF
6005     fi
6006     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6007 fi
6008
6009 for pfx in "" host_; do
6010     varname=${pfx%_}cc_type
6011     eval "type=\$$varname"
6012     if [ $type = "msvc" ]; then
6013         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6014 static inline int foo(int a) { return a; }
6015 EOF
6016     fi
6017 done
6018
6019 case $as_type in
6020     clang)
6021         add_asflags -Qunused-arguments
6022     ;;
6023 esac
6024
6025 case $ld_type in
6026     clang)
6027         check_ldflags -Qunused-arguments
6028     ;;
6029 esac
6030
6031 case $target_os in
6032     osf1)
6033         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6034     ;;
6035     plan9)
6036         add_cppflags -Dmain=plan9_main
6037     ;;
6038 esac
6039
6040 enable frame_thread_encoder
6041
6042 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6043
6044 check_deps $CONFIG_LIST       \
6045            $CONFIG_EXTRA      \
6046            $HAVE_LIST         \
6047            $ALL_COMPONENTS    \
6048
6049 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"
6050
6051
6052 if test $target_os = "haiku"; then
6053     disable memalign
6054     disable posix_memalign
6055 fi
6056
6057 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6058     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6059     enable dxva2_lib
6060
6061 ! enabled_any memalign posix_memalign aligned_malloc &&
6062     enabled simd_align_16 && enable memalign_hack
6063
6064 # add_dep lib dep
6065 # -> enable ${lib}_deps_${dep}
6066 # -> add $dep to ${lib}_deps only once
6067 add_dep() {
6068     lib=$1
6069     dep=$2
6070     enabled "${lib}_deps_${dep}" && return 0
6071     enable  "${lib}_deps_${dep}"
6072     prepend "${lib}_deps" $dep
6073 }
6074
6075 # merge deps lib components
6076 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6077 merge_deps() {
6078     lib=$1
6079     shift
6080     for comp in $*; do
6081         enabled $comp || continue
6082         eval "dep=\"\$${comp}_deps\""
6083         for d in $dep; do
6084             add_dep $lib $d
6085         done
6086     done
6087 }
6088
6089 merge_deps libavfilter $FILTER_LIST
6090
6091 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6092
6093 for thread in $THREADS_LIST; do
6094     if enabled $thread; then
6095         test -n "$thread_type" &&
6096             die "ERROR: Only one thread type must be selected." ||
6097             thread_type="$thread"
6098     fi
6099 done
6100
6101 enabled zlib && add_cppflags -DZLIB_CONST
6102
6103 # conditional library dependencies, in linking order
6104 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6105 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6106 enabled aresample_filter    && prepend avfilter_deps "swresample"
6107 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6108 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6109 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6110 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6111 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6112 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6113 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6114 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6115 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6116 enabled pan_filter          && prepend avfilter_deps "swresample"
6117 enabled pp_filter           && prepend avfilter_deps "postproc"
6118 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6119 enabled resample_filter && prepend avfilter_deps "avresample"
6120 enabled sab_filter          && prepend avfilter_deps "swscale"
6121 enabled scale_filter    && prepend avfilter_deps "swscale"
6122 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6123 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6124 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6125 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6126 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6127 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6128 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6129 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6130 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6131
6132 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6133
6134 enabled opus_decoder    && prepend avcodec_deps "swresample"
6135
6136 expand_deps(){
6137     lib_deps=${1}_deps
6138     eval "deps=\$$lib_deps"
6139     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6140     unique $lib_deps
6141 }
6142
6143 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6144 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6145
6146 map 'expand_deps $v' $LIBRARY_LIST
6147
6148 echo "install prefix            $prefix"
6149 echo "source path               $source_path"
6150 echo "C compiler                $cc"
6151 echo "C library                 $libc_type"
6152 if test "$host_cc" != "$cc"; then
6153     echo "host C compiler           $host_cc"
6154     echo "host C library            $host_libc_type"
6155 fi
6156 echo "ARCH                      $arch ($cpu)"
6157 if test "$build_suffix" != ""; then
6158     echo "build suffix              $build_suffix"
6159 fi
6160 if test "$progs_suffix" != ""; then
6161     echo "progs suffix              $progs_suffix"
6162 fi
6163 if test "$extra_version" != ""; then
6164     echo "version string suffix     $extra_version"
6165 fi
6166 echo "big-endian                ${bigendian-no}"
6167 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6168 if enabled x86; then
6169     echo "${yasmexe}                      ${yasm-no}"
6170     echo "MMX enabled               ${mmx-no}"
6171     echo "MMXEXT enabled            ${mmxext-no}"
6172     echo "3DNow! enabled            ${amd3dnow-no}"
6173     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6174     echo "SSE enabled               ${sse-no}"
6175     echo "SSSE3 enabled             ${ssse3-no}"
6176     echo "AESNI enabled             ${aesni-no}"
6177     echo "AVX enabled               ${avx-no}"
6178     echo "XOP enabled               ${xop-no}"
6179     echo "FMA3 enabled              ${fma3-no}"
6180     echo "FMA4 enabled              ${fma4-no}"
6181     echo "i686 features enabled     ${i686-no}"
6182     echo "CMOV is fast              ${fast_cmov-no}"
6183     echo "EBX available             ${ebx_available-no}"
6184     echo "EBP available             ${ebp_available-no}"
6185 fi
6186 if enabled aarch64; then
6187     echo "NEON enabled              ${neon-no}"
6188     echo "VFP enabled               ${vfp-no}"
6189 fi
6190 if enabled arm; then
6191     echo "ARMv5TE enabled           ${armv5te-no}"
6192     echo "ARMv6 enabled             ${armv6-no}"
6193     echo "ARMv6T2 enabled           ${armv6t2-no}"
6194     echo "VFP enabled               ${vfp-no}"
6195     echo "NEON enabled              ${neon-no}"
6196     echo "THUMB enabled             ${thumb-no}"
6197 fi
6198 if enabled mips; then
6199     echo "MIPS FPU enabled          ${mipsfpu-no}"
6200     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6201     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6202     echo "MIPS MSA enabled          ${msa-no}"
6203     echo "LOONGSON MMI enabled      ${mmi-no}"
6204 fi
6205 if enabled ppc; then
6206     echo "AltiVec enabled           ${altivec-no}"
6207     echo "VSX enabled               ${vsx-no}"
6208     echo "POWER8 enabled            ${power8-no}"
6209     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6210     echo "dcbzl available           ${dcbzl-no}"
6211 fi
6212 echo "debug symbols             ${debug-no}"
6213 echo "strip symbols             ${stripping-no}"
6214 echo "optimize for size         ${small-no}"
6215 echo "optimizations             ${optimizations-no}"
6216 echo "static                    ${static-no}"
6217 echo "shared                    ${shared-no}"
6218 echo "postprocessing support    ${postproc-no}"
6219 echo "new filter support        ${avfilter-no}"
6220 echo "network support           ${network-no}"
6221 echo "threading support         ${thread_type-no}"
6222 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6223 echo "SDL support               ${sdl-no}"
6224 echo "opencl enabled            ${opencl-no}"
6225 echo "texi2html enabled         ${texi2html-no}"
6226 echo "perl enabled              ${perl-no}"
6227 echo "pod2man enabled           ${pod2man-no}"
6228 echo "makeinfo enabled          ${makeinfo-no}"
6229 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6230 test -n "$random_seed" &&
6231     echo "random seed               ${random_seed}"
6232 echo
6233
6234 echo "Enabled programs:"
6235 print_enabled '' $PROGRAM_LIST | print_in_columns
6236 echo
6237
6238 echo "External libraries:"
6239 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6240 echo
6241
6242 echo "Libraries:"
6243 print_enabled '' $LIBRARY_LIST | print_in_columns
6244 echo
6245
6246 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6247     echo "Enabled ${type}s:"
6248     eval list=\$$(toupper $type)_LIST
6249     print_enabled '_*' $list | print_in_columns
6250     echo
6251 done
6252
6253 license="LGPL version 2.1 or later"
6254 if enabled nonfree; then
6255     license="nonfree and unredistributable"
6256 elif enabled gplv3; then
6257     license="GPL version 3 or later"
6258 elif enabled lgplv3; then
6259     license="LGPL version 3 or later"
6260 elif enabled gpl; then
6261     license="GPL version 2 or later"
6262 fi
6263
6264 echo "License: $license"
6265
6266 echo "Creating config.mak, config.h, and doc/config.texi..."
6267
6268 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6269
6270 enabled stripping || strip="echo skipping strip"
6271
6272 config_files="$TMPH config.mak doc/config.texi"
6273
6274 cat > config.mak <<EOF
6275 # Automatically generated by configure - do not modify!
6276 ifndef FFMPEG_CONFIG_MAK
6277 FFMPEG_CONFIG_MAK=1
6278 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6279 prefix=$prefix
6280 LIBDIR=\$(DESTDIR)$libdir
6281 SHLIBDIR=\$(DESTDIR)$shlibdir
6282 INCDIR=\$(DESTDIR)$incdir
6283 BINDIR=\$(DESTDIR)$bindir
6284 DATADIR=\$(DESTDIR)$datadir
6285 DOCDIR=\$(DESTDIR)$docdir
6286 MANDIR=\$(DESTDIR)$mandir
6287 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6288 SRC_PATH=$source_path
6289 SRC_LINK=$source_link
6290 ifndef MAIN_MAKEFILE
6291 SRC_PATH:=\$(SRC_PATH:.%=..%)
6292 endif
6293 CC_IDENT=$cc_ident
6294 ARCH=$arch
6295 INTRINSICS=$intrinsics
6296 CC=$cc
6297 CXX=$cxx
6298 AS=$as
6299 OBJCC=$objcc
6300 LD=$ld
6301 DEPCC=$dep_cc
6302 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6303 DEPAS=$as
6304 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6305 YASM=$yasmexe
6306 DEPYASM=$yasmexe
6307 AR=$ar
6308 ARFLAGS=$arflags
6309 AR_O=$ar_o
6310 RANLIB=$ranlib
6311 STRIP=$strip
6312 CP=cp -p
6313 LN_S=$ln_s
6314 CPPFLAGS=$CPPFLAGS
6315 CFLAGS=$CFLAGS
6316 CXXFLAGS=$CXXFLAGS
6317 OBJCFLAGS=$OBJCFLAGS
6318 ASFLAGS=$ASFLAGS
6319 AS_C=$AS_C
6320 AS_O=$AS_O
6321 OBJCC_C=$OBJCC_C
6322 OBJCC_E=$OBJCC_E
6323 OBJCC_O=$OBJCC_O
6324 CC_C=$CC_C
6325 CC_E=$CC_E
6326 CC_O=$CC_O
6327 CXX_C=$CXX_C
6328 CXX_O=$CXX_O
6329 LD_O=$LD_O
6330 LD_LIB=$LD_LIB
6331 LD_PATH=$LD_PATH
6332 DLLTOOL=$dlltool
6333 WINDRES=$windres
6334 DEPWINDRES=$dep_cc
6335 DOXYGEN=$doxygen
6336 LDFLAGS=$LDFLAGS
6337 LDEXEFLAGS=$LDEXEFLAGS
6338 LDLIBFLAGS=$LDLIBFLAGS
6339 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6340 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6341 YASMFLAGS=$YASMFLAGS
6342 BUILDSUF=$build_suffix
6343 PROGSSUF=$progs_suffix
6344 FULLNAME=$FULLNAME
6345 LIBPREF=$LIBPREF
6346 LIBSUF=$LIBSUF
6347 LIBNAME=$LIBNAME
6348 SLIBPREF=$SLIBPREF
6349 SLIBSUF=$SLIBSUF
6350 EXESUF=$EXESUF
6351 EXTRA_VERSION=$extra_version
6352 CCDEP=$CCDEP
6353 CXXDEP=$CXXDEP
6354 CCDEP_FLAGS=$CCDEP_FLAGS
6355 ASDEP=$ASDEP
6356 ASDEP_FLAGS=$ASDEP_FLAGS
6357 CC_DEPFLAGS=$CC_DEPFLAGS
6358 AS_DEPFLAGS=$AS_DEPFLAGS
6359 HOSTCC=$host_cc
6360 HOSTLD=$host_ld
6361 HOSTCFLAGS=$host_cflags
6362 HOSTCPPFLAGS=$host_cppflags
6363 HOSTEXESUF=$HOSTEXESUF
6364 HOSTLDFLAGS=$host_ldflags
6365 HOSTLIBS=$host_libs
6366 DEPHOSTCC=$host_cc
6367 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6368 HOSTCCDEP=$HOSTCCDEP
6369 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6370 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6371 HOSTCC_C=$HOSTCC_C
6372 HOSTCC_O=$HOSTCC_O
6373 HOSTLD_O=$HOSTLD_O
6374 TARGET_EXEC=$target_exec $target_exec_args
6375 TARGET_PATH=$target_path
6376 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6377 CFLAGS-ffplay=$sdl_cflags
6378 ZLIB=$($ldflags_filter -lz)
6379 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6380 EXTRALIBS=$extralibs
6381 COMPAT_OBJS=$compat_objs
6382 EXEOBJS=$exeobjs
6383 INSTALL=$install
6384 LIBTARGET=${LIBTARGET}
6385 SLIBNAME=${SLIBNAME}
6386 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6387 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6388 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6389 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6390 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6391 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6392 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6393 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6394 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6395 NOREDZONE_FLAGS=$noredzone_flags
6396 EOF
6397
6398 get_version(){
6399     lcname=lib${1}
6400     name=$(toupper $lcname)
6401     file=$source_path/$lcname/version.h
6402     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6403     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6404     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6405     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6406     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6407     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6408 }
6409
6410 map 'get_version $v' $LIBRARY_LIST
6411
6412 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6413
6414 print_program_libs(){
6415     eval "program_libs=\$${1}_libs"
6416     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6417 }
6418
6419 map 'print_program_libs $v' $PROGRAM_LIST
6420
6421 cat > $TMPH <<EOF
6422 /* Automatically generated by configure - do not modify! */
6423 #ifndef FFMPEG_CONFIG_H
6424 #define FFMPEG_CONFIG_H
6425 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6426 #define FFMPEG_LICENSE "$(c_escape $license)"
6427 #define CONFIG_THIS_YEAR 2016
6428 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6429 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6430 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6431 #define av_restrict $_restrict
6432 #define EXTERN_PREFIX "${extern_prefix}"
6433 #define EXTERN_ASM ${extern_prefix}
6434 #define BUILDSUF "$build_suffix"
6435 #define SLIBSUF "$SLIBSUF"
6436 #define HAVE_MMX2 HAVE_MMXEXT
6437 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6438 EOF
6439
6440 test -n "$assert_level" &&
6441     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6442
6443 test -n "$malloc_prefix" &&
6444     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6445
6446 if enabled yasm; then
6447     append config_files $TMPASM
6448     printf '' >$TMPASM
6449 fi
6450
6451 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6452
6453
6454 mkdir -p doc
6455 mkdir -p tests
6456 mkdir -p tests/api
6457 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6458
6459 print_config ARCH_   "$config_files" $ARCH_LIST
6460 print_config HAVE_   "$config_files" $HAVE_LIST
6461 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6462                                      $CONFIG_EXTRA      \
6463                                      $ALL_COMPONENTS    \
6464
6465 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6466 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6467
6468 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6469 cp_if_changed $TMPH config.h
6470 touch .config
6471
6472 enabled yasm && cp_if_changed $TMPASM config.asm
6473
6474 cat > $TMPH <<EOF
6475 /* Generated by ffconf */
6476 #ifndef AVUTIL_AVCONFIG_H
6477 #define AVUTIL_AVCONFIG_H
6478 EOF
6479
6480 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6481
6482 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6483
6484 cp_if_changed $TMPH libavutil/avconfig.h
6485
6486 if test -n "$WARNINGS"; then
6487     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6488     enabled fatal_warnings && exit 1
6489 fi
6490
6491 # build pkg-config files
6492
6493 lib_version(){
6494     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6495 }
6496
6497 pkgconfig_generate(){
6498     name=$1
6499     shortname=${name#lib}${build_suffix}
6500     comment=$2
6501     version=$3
6502     libs=$4
6503     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6504     requires=${requires%, }
6505     enabled ${name#lib} || return 0
6506     mkdir -p $name
6507     cat <<EOF > $name/$name${build_suffix}.pc
6508 prefix=$prefix
6509 exec_prefix=\${prefix}
6510 libdir=$libdir
6511 includedir=$incdir
6512
6513 Name: $name
6514 Description: $comment
6515 Version: $version
6516 Requires: $(enabled shared || echo $requires)
6517 Requires.private: $(enabled shared && echo $requires)
6518 Conflicts:
6519 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6520 Libs.private: $(enabled shared && echo $libs)
6521 Cflags: -I\${includedir}
6522 EOF
6523
6524 mkdir -p doc/examples/pc-uninstalled
6525 includedir=${source_path}
6526 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6527     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6528 prefix=
6529 exec_prefix=
6530 libdir=\${pcfiledir}/../../../$name
6531 includedir=${includedir}
6532
6533 Name: $name
6534 Description: $comment
6535 Version: $version
6536 Requires: $requires
6537 Conflicts:
6538 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6539 Cflags: -I\${includedir}
6540 EOF
6541 }
6542
6543 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6544 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6545 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6546 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6547 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6548 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6549 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6550 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6551 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"