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-libaacplus      enable AAC+ encoding via libaacplus [no]
 211   --enable-libass          enable libass subtitles rendering,
 212                            needed for subtitles and ass filter [no]
 213   --enable-libbluray       enable BluRay reading using libbluray [no]
 214   --enable-libbs2b         enable bs2b DSP library [no]
 215   --enable-libcaca         enable textual display using libcaca [no]
 216   --enable-libcelt         enable CELT decoding via libcelt [no]
 217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 219                            and libraw1394 [no]
 220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 221   --enable-libfaac         enable AAC encoding via libfaac [no]
 222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 226   --enable-libgme          enable Game Music Emu via libgme [no]
 227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 231   --enable-libmfx          enable HW acceleration through libmfx
 232   --enable-libmodplug      enable ModPlug via libmodplug [no]
 233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 234   --enable-libnut          enable NUT (de)muxing via libnut,
 235                            native (de)muxer exists [no]
 236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 238   --enable-libopencv       enable video filtering via libopencv [no]
 239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 241   --enable-libopus         enable Opus de/encoding via libopus [no]
 242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 244   --enable-libquvi         enable quvi input via libquvi [no]
 245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 250   --enable-libsoxr         enable Include libsoxr resampling [no]
 251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 252   --enable-libssh          enable SFTP protocol via libssh [no]
 253   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 255   --enable-libtheora       enable Theora encoding via libtheora [no]
 256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 257   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 258   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 259   --enable-libvidstab      enable video stabilization using vid.stab [no]
 260   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mmal            enable decoding via MMAL [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-nvenc           enable NVIDIA NVENC support [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl            disable sdl [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --enable-x11grab         enable X11 grabbing (legacy) [no]
 295   --disable-xlib           disable xlib [autodetect]
 296   --disable-zlib           disable zlib [autodetect]
 297
 298 Toolchain options:
 299   --arch=ARCH              select architecture [$arch]
 300   --cpu=CPU                select the minimum required CPU (affects
 301                            instruction selection, may crash on older CPUs)
 302   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 303   --progs-suffix=SUFFIX    program name suffix []
 304   --enable-cross-compile   assume a cross-compiler is used
 305   --sysroot=PATH           root of cross-build tree
 306   --sysinclude=PATH        location of cross-build system headers
 307   --target-os=OS           compiler targets OS [$target_os]
 308   --target-exec=CMD        command to run executables on target
 309   --target-path=DIR        path to view of build directory on target
 310   --target-samples=DIR     path to samples directory on target
 311   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 312   --toolchain=NAME         set tool defaults according to NAME
 313   --nm=NM                  use nm tool NM [$nm_default]
 314   --ar=AR                  use archive tool AR [$ar_default]
 315   --as=AS                  use assembler AS [$as_default]
 316   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 317   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 318   --cc=CC                  use C compiler CC [$cc_default]
 319   --cxx=CXX                use C compiler CXX [$cxx_default]
 320   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 321   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 322   --ld=LD                  use linker LD [$ld_default]
 323   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 324   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 325   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 326   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 327   --host-cc=HOSTCC         use host C compiler HOSTCC
 328   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 329   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 330   --host-ld=HOSTLD         use host linker HOSTLD
 331   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 332   --host-libs=HLIBS        use libs HLIBS when linking for host
 333   --host-os=OS             compiler host OS [$target_os]
 334   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 335   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 336   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 337   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 338   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 339   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 340   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 341   --extra-version=STRING   version string suffix []
 342   --optflags=OPTFLAGS      override optimization-related compiler flags
 343   --build-suffix=SUFFIX    library name suffix []
 344   --enable-pic             build position-independent code
 345   --enable-thumb           compile for Thumb instruction set
 346   --enable-lto             use link-time optimization
 347   --env="ENV=override"     override the environment variables
 348
 349 Advanced options (experts only):
 350   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 351   --custom-allocator=NAME  use a supported custom allocator
 352   --disable-symver         disable symbol versioning
 353   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 354   --disable-safe-bitstream-reader
 355                            disable buffer boundary checking in bitreaders
 356                            (faster, but may crash)
 357   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 358   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 359
 360 Optimization options (experts only):
 361   --disable-asm            disable all assembly optimizations
 362   --disable-altivec        disable AltiVec optimizations
 363   --disable-vsx            disable VSX optimizations
 364   --disable-power8         disable POWER8 optimizations
 365   --disable-amd3dnow       disable 3DNow! optimizations
 366   --disable-amd3dnowext    disable 3DNow! extended optimizations
 367   --disable-mmx            disable MMX optimizations
 368   --disable-mmxext         disable MMXEXT optimizations
 369   --disable-sse            disable SSE optimizations
 370   --disable-sse2           disable SSE2 optimizations
 371   --disable-sse3           disable SSE3 optimizations
 372   --disable-ssse3          disable SSSE3 optimizations
 373   --disable-sse4           disable SSE4 optimizations
 374   --disable-sse42          disable SSE4.2 optimizations
 375   --disable-avx            disable AVX optimizations
 376   --disable-xop            disable XOP optimizations
 377   --disable-fma3           disable FMA3 optimizations
 378   --disable-fma4           disable FMA4 optimizations
 379   --disable-avx2           disable AVX2 optimizations
 380   --disable-aesni          disable AESNI optimizations
 381   --disable-armv5te        disable armv5te optimizations
 382   --disable-armv6          disable armv6 optimizations
 383   --disable-armv6t2        disable armv6t2 optimizations
 384   --disable-vfp            disable VFP optimizations
 385   --disable-neon           disable NEON optimizations
 386   --disable-inline-asm     disable use of inline assembly
 387   --disable-yasm           disable use of nasm/yasm assembly
 388   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 389   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 390   --disable-msa            disable MSA optimizations
 391   --disable-mipsfpu        disable floating point MIPS optimizations
 392   --disable-mmi            disable Loongson SIMD optimizations
 393   --disable-fast-unaligned consider unaligned accesses slow
 394
 395 Developer options (useful when working on FFmpeg itself):
 396   --disable-debug          disable debugging symbols
 397   --enable-debug=LEVEL     set the debug level [$debuglevel]
 398   --disable-optimizations  disable compiler optimizations
 399   --enable-extra-warnings  enable more compiler warnings
 400   --disable-stripping      disable stripping of executables and shared libraries
 401   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 402                            2 causes a slowdown at runtime.
 403   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 404   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 405                            leaks and errors, using the specified valgrind binary.
 406                            Cannot be combined with --target-exec
 407   --enable-ftrapv          Trap arithmetic overflows
 408   --samples=PATH           location of test samples for FATE, if not set use
 409                            \$FATE_SAMPLES at make invocation time.
 410   --enable-neon-clobber-test check NEON registers for clobbering (should be
 411                            used only for debugging purposes)
 412   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 413                            should be used only for debugging purposes)
 414   --enable-random          randomly enable/disable components
 415   --disable-random
 416   --enable-random=LIST     randomly enable/disable specific components or
 417   --disable-random=LIST    component groups. LIST is a comma-separated list
 418                            of NAME[:PROB] entries where NAME is a component
 419                            (group) and PROB the probability associated with
 420                            NAME (default 0.5).
 421   --random-seed=VALUE      seed value for --enable/disable-random
 422   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 423                            (only applies to --disable-optimizations builds)
 424
 425 NOTE: Object files are built at the place where configure is launched.
 426 EOF
 427   exit 0
 428 }
 429
 430 quotes='""'
 431 if test -t 1 && which tput >/dev/null 2>&1; then
 432     ncolors=$(tput colors)
 433     if test -n "$ncolors" && test $ncolors -ge 8; then
 434         bold_color=$(tput bold)
 435         warn_color=$(tput setaf 3)
 436         error_color=$(tput setaf 1)
 437         reset_color=$(tput sgr0)
 438     fi
 439     # 72 used instead of 80 since that's the default of pr
 440     ncols=$(tput cols)
 441 fi
 442 : ${ncols:=72}
 443
 444 log(){
 445     echo "$@" >> $logfile
 446 }
 447
 448 log_file(){
 449     log BEGIN $1
 450     pr -n -t $1 >> $logfile
 451     log END $1
 452 }
 453
 454 warn(){
 455     log "WARNING: $*"
 456     WARNINGS="${WARNINGS}WARNING: $*\n"
 457 }
 458
 459 die(){
 460     log "$@"
 461     echo "$error_color$bold_color$@$reset_color"
 462     cat <<EOF
 463
 464 If you think configure made a mistake, make sure you are using the latest
 465 version from Git.  If the latest version fails, report the problem to the
 466 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 467 EOF
 468     if disabled logging; then
 469         cat <<EOF
 470 Rerun configure with logging enabled (do not use --disable-logging), and
 471 include the log this produces with your report.
 472 EOF
 473     else
 474         cat <<EOF
 475 Include the log file "$logfile" produced by configure as this will help
 476 solve the problem.
 477 EOF
 478     fi
 479     exit 1
 480 }
 481
 482 # Avoid locale weirdness, besides we really just want to translate ASCII.
 483 toupper(){
 484     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 485 }
 486
 487 tolower(){
 488     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 489 }
 490
 491 c_escape(){
 492     echo "$*" | sed 's/["\\]/\\\0/g'
 493 }
 494
 495 sh_quote(){
 496     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 497     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 498     echo "$v"
 499 }
 500
 501 cleanws(){
 502     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 503 }
 504
 505 filter(){
 506     pat=$1
 507     shift
 508     for v; do
 509         eval "case $v in $pat) echo $v ;; esac"
 510     done
 511 }
 512
 513 filter_out(){
 514     pat=$1
 515     shift
 516     for v; do
 517         eval "case $v in $pat) ;; *) echo $v ;; esac"
 518     done
 519 }
 520
 521 map(){
 522     m=$1
 523     shift
 524     for v; do eval $m; done
 525 }
 526
 527 add_suffix(){
 528     suffix=$1
 529     shift
 530     for v; do echo ${v}${suffix}; done
 531 }
 532
 533 set_all(){
 534     value=$1
 535     shift
 536     for var in $*; do
 537         eval $var=$value
 538     done
 539 }
 540
 541 set_weak(){
 542     value=$1
 543     shift
 544     for var; do
 545         eval : \${$var:=$value}
 546     done
 547 }
 548
 549 sanitize_var_name(){
 550     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 551 }
 552
 553 set_safe(){
 554     var=$1
 555     shift
 556     eval $(sanitize_var_name "$var")='$*'
 557 }
 558
 559 get_safe(){
 560     eval echo \$$(sanitize_var_name "$1")
 561 }
 562
 563 pushvar(){
 564     for pvar in $*; do
 565         eval level=\${${pvar}_level:=0}
 566         eval ${pvar}_${level}="\$$pvar"
 567         eval ${pvar}_level=$(($level+1))
 568     done
 569 }
 570
 571 popvar(){
 572     for pvar in $*; do
 573         eval level=\${${pvar}_level:-0}
 574         test $level = 0 && continue
 575         eval level=$(($level-1))
 576         eval $pvar="\${${pvar}_${level}}"
 577         eval ${pvar}_level=$level
 578         eval unset ${pvar}_${level}
 579     done
 580 }
 581
 582 enable(){
 583     set_all yes $*
 584 }
 585
 586 disable(){
 587     set_all no $*
 588 }
 589
 590 enable_weak(){
 591     set_weak yes $*
 592 }
 593
 594 disable_weak(){
 595     set_weak no $*
 596 }
 597
 598 enable_safe(){
 599     for var; do
 600         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 601     done
 602 }
 603
 604 disable_safe(){
 605     for var; do
 606         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 607     done
 608 }
 609
 610 do_enable_deep(){
 611     for var; do
 612         enabled $var && continue
 613         eval sel="\$${var}_select"
 614         eval sgs="\$${var}_suggest"
 615         pushvar var sgs
 616         enable_deep $sel
 617         popvar sgs
 618         enable_deep_weak $sgs
 619         popvar var
 620     done
 621 }
 622
 623 enable_deep(){
 624     do_enable_deep $*
 625     enable $*
 626 }
 627
 628 enable_deep_weak(){
 629     for var; do
 630         disabled $var && continue
 631         pushvar var
 632         do_enable_deep $var
 633         popvar var
 634         enable_weak $var
 635     done
 636 }
 637
 638 enabled(){
 639     test "${1#!}" = "$1" && op='=' || op=!=
 640     eval test "x\$${1#!}" $op "xyes"
 641 }
 642
 643 disabled(){
 644     test "${1#!}" = "$1" && op='=' || op=!=
 645     eval test "x\$${1#!}" $op "xno"
 646 }
 647
 648 enabled_all(){
 649     for opt; do
 650         enabled $opt || return 1
 651     done
 652 }
 653
 654 disabled_all(){
 655     for opt; do
 656         disabled $opt || return 1
 657     done
 658 }
 659
 660 enabled_any(){
 661     for opt; do
 662         enabled $opt && return 0
 663     done
 664 }
 665
 666 disabled_any(){
 667     for opt; do
 668         disabled $opt && return 0
 669     done
 670     return 1
 671 }
 672
 673 set_default(){
 674     for opt; do
 675         eval : \${$opt:=\$${opt}_default}
 676     done
 677 }
 678
 679 is_in(){
 680     value=$1
 681     shift
 682     for var in $*; do
 683         [ $var = $value ] && return 0
 684     done
 685     return 1
 686 }
 687
 688 do_check_deps(){
 689     for cfg; do
 690         cfg="${cfg#!}"
 691         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 692         disabled ${cfg}_checking && continue
 693         enable ${cfg}_checking
 694         append allopts $cfg
 695
 696         eval dep_all="\$${cfg}_deps"
 697         eval dep_any="\$${cfg}_deps_any"
 698         eval dep_sel="\$${cfg}_select"
 699         eval dep_sgs="\$${cfg}_suggest"
 700         eval dep_ifa="\$${cfg}_if"
 701         eval dep_ifn="\$${cfg}_if_any"
 702
 703         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 704         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 705         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 706
 707         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 708         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 709         enabled_all  $dep_all || disable $cfg
 710         enabled_any  $dep_any || disable $cfg
 711         disabled_any $dep_sel && disable $cfg
 712
 713         if enabled $cfg; then
 714             enable_deep $dep_sel
 715             enable_deep_weak $dep_sgs
 716         fi
 717
 718         disable ${cfg}_checking
 719     done
 720 }
 721
 722 check_deps(){
 723     unset allopts
 724
 725     do_check_deps "$@"
 726
 727     for cfg in $allopts; do
 728         enabled $cfg || continue
 729         eval dep_extralibs="\$${cfg}_extralibs"
 730         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 731     done
 732 }
 733
 734 print_config(){
 735     pfx=$1
 736     files=$2
 737     shift 2
 738     map 'eval echo "$v \${$v:-no}"' "$@" |
 739     awk "BEGIN { split(\"$files\", files) }
 740         {
 741             c = \"$pfx\" toupper(\$1);
 742             v = \$2;
 743             sub(/yes/, 1, v);
 744             sub(/no/,  0, v);
 745             for (f in files) {
 746                 file = files[f];
 747                 if (file ~ /\\.h\$/) {
 748                     printf(\"#define %s %d\\n\", c, v) >>file;
 749                 } else if (file ~ /\\.asm\$/) {
 750                     printf(\"%%define %s %d\\n\", c, v) >>file;
 751                 } else if (file ~ /\\.mak\$/) {
 752                     n = -v ? \"\" : \"!\";
 753                     printf(\"%s%s=yes\\n\", n, c) >>file;
 754                 } else if (file ~ /\\.texi\$/) {
 755                     pre = -v ? \"\" : \"@c \";
 756                     yesno = \$2;
 757                     c2 = tolower(c);
 758                     gsub(/_/, \"-\", c2);
 759                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 760                 }
 761             }
 762         }"
 763 }
 764
 765 print_enabled(){
 766     suf=$1
 767     shift
 768     for v; do
 769         enabled $v && printf "%s\n" ${v%$suf};
 770     done
 771 }
 772
 773 append(){
 774     var=$1
 775     shift
 776     eval "$var=\"\$$var $*\""
 777 }
 778
 779 prepend(){
 780     var=$1
 781     shift
 782     eval "$var=\"$* \$$var\""
 783 }
 784
 785 unique(){
 786     var=$1
 787     uniq_list=""
 788     for tok in $(eval echo \$$var); do
 789         uniq_list="$(filter_out $tok $uniq_list) $tok"
 790     done
 791     eval "$var=\"${uniq_list}\""
 792 }
 793
 794 add_cppflags(){
 795     append CPPFLAGS "$@"
 796 }
 797
 798 add_cflags(){
 799     append CFLAGS $($cflags_filter "$@")
 800 }
 801
 802 add_cxxflags(){
 803     append CXXFLAGS $($cflags_filter "$@")
 804 }
 805
 806 add_asflags(){
 807     append ASFLAGS $($asflags_filter "$@")
 808 }
 809
 810 add_objcflags(){
 811     append OBJCFLAGS $($objcflags_filter "$@")
 812 }
 813
 814 add_ldflags(){
 815     append LDFLAGS $($ldflags_filter "$@")
 816 }
 817
 818 add_ldexeflags(){
 819     append LDEXEFLAGS $($ldflags_filter "$@")
 820 }
 821
 822 add_ldlibflags(){
 823     append LDLIBFLAGS $($ldflags_filter "$@")
 824 }
 825
 826 add_stripflags(){
 827     append ASMSTRIPFLAGS "$@"
 828 }
 829
 830 add_extralibs(){
 831     prepend extralibs $($ldflags_filter "$@")
 832 }
 833
 834 add_host_cppflags(){
 835     append host_cppflags "$@"
 836 }
 837
 838 add_host_cflags(){
 839     append host_cflags $($host_cflags_filter "$@")
 840 }
 841
 842 add_host_ldflags(){
 843     append host_ldflags $($host_ldflags_filter "$@")
 844 }
 845
 846 add_compat(){
 847     append compat_objs $1
 848     shift
 849     map 'add_cppflags -D$v' "$@"
 850 }
 851
 852 check_cmd(){
 853     log "$@"
 854     "$@" >> $logfile 2>&1
 855 }
 856
 857 check_stat(){
 858     log check_stat "$@"
 859     stat "$1" >> $logfile 2>&1
 860 }
 861
 862 cc_o(){
 863     eval printf '%s\\n' $CC_O
 864 }
 865
 866 cc_e(){
 867     eval printf '%s\\n' $CC_E
 868 }
 869
 870 check_cc(){
 871     log check_cc "$@"
 872     cat > $TMPC
 873     log_file $TMPC
 874     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 875 }
 876
 877 check_cxx(){
 878     log check_cxx "$@"
 879     cat > $TMPCPP
 880     log_file $TMPCPP
 881     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 882 }
 883
 884 check_objcc(){
 885     log check_objcc "$@"
 886     cat > $TMPM
 887     log_file $TMPM
 888     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 889 }
 890
 891 check_cpp(){
 892     log check_cpp "$@"
 893     cat > $TMPC
 894     log_file $TMPC
 895     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 896 }
 897
 898 as_o(){
 899     eval printf '%s\\n' $AS_O
 900 }
 901
 902 check_as(){
 903     log check_as "$@"
 904     cat > $TMPS
 905     log_file $TMPS
 906     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 907 }
 908
 909 check_inline_asm(){
 910     log check_inline_asm "$@"
 911     name="$1"
 912     code="$2"
 913     shift 2
 914     disable $name
 915     check_cc "$@" <<EOF && enable $name
 916 void foo(void){ __asm__ volatile($code); }
 917 EOF
 918 }
 919
 920 check_insn(){
 921     log check_insn "$@"
 922     check_inline_asm ${1}_inline "\"$2\""
 923     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 924 }
 925
 926 check_yasm(){
 927     log check_yasm "$@"
 928     echo "$1" > $TMPS
 929     log_file $TMPS
 930     shift 1
 931     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 932 }
 933
 934 ld_o(){
 935     eval printf '%s\\n' $LD_O
 936 }
 937
 938 check_ld(){
 939     log check_ld "$@"
 940     type=$1
 941     shift 1
 942     flags=$(filter_out '-l*|*.so' $@)
 943     libs=$(filter '-l*|*.so' $@)
 944     check_$type $($cflags_filter $flags) || return
 945     flags=$($ldflags_filter $flags)
 946     libs=$($ldflags_filter $libs)
 947     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 948 }
 949
 950 print_include(){
 951     hdr=$1
 952     test "${hdr%.h}" = "${hdr}" &&
 953         echo "#include $hdr"    ||
 954         echo "#include <$hdr>"
 955 }
 956
 957 check_code(){
 958     log check_code "$@"
 959     check=$1
 960     headers=$2
 961     code=$3
 962     shift 3
 963     {
 964         for hdr in $headers; do
 965             print_include $hdr
 966         done
 967         echo "int main(void) { $code; return 0; }"
 968     } | check_$check "$@"
 969 }
 970
 971 check_cppflags(){
 972     log check_cppflags "$@"
 973     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 974 int x;
 975 EOF
 976 }
 977
 978 test_cflags(){
 979     log test_cflags "$@"
 980     set -- $($cflags_filter "$@")
 981     check_cc "$@" <<EOF
 982 int x;
 983 EOF
 984 }
 985
 986 check_cflags(){
 987     log check_cflags "$@"
 988     test_cflags "$@" && add_cflags "$@"
 989 }
 990
 991 check_cxxflags(){
 992     log check_cxxflags "$@"
 993     set -- $($cflags_filter "$@")
 994     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 995 int x;
 996 EOF
 997 }
 998
 999 test_objcflags(){
1000     log test_cflags "$@"
1001     set -- $($cflags_filter "$@")
1002     check_objcc "$@" <<EOF
1003 int x;
1004 EOF
1005 }
1006
1007 check_objcflags(){
1008     log check_cflags "$@"
1009     test_objcflags "$@" && add_objcflags "$@"
1010 }
1011
1012 test_ldflags(){
1013     log test_ldflags "$@"
1014     check_ld "cc" "$@" <<EOF
1015 int main(void){ return 0; }
1016 EOF
1017 }
1018
1019 check_ldflags(){
1020     log check_ldflags "$@"
1021     test_ldflags "$@" && add_ldflags "$@"
1022 }
1023
1024 test_stripflags(){
1025     log test_stripflags "$@"
1026     # call check_cc to get a fresh TMPO
1027     check_cc <<EOF
1028 int main(void) { return 0; }
1029 EOF
1030     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1031 }
1032
1033 check_stripflags(){
1034     log check_stripflags "$@"
1035     test_stripflags "$@" && add_stripflags "$@"
1036 }
1037
1038 check_header(){
1039     log check_header "$@"
1040     header=$1
1041     shift
1042     disable_safe $header
1043     check_cpp "$@" <<EOF && enable_safe $header
1044 #include <$header>
1045 int x;
1046 EOF
1047 }
1048
1049 check_header_objcc(){
1050     log check_header_objcc "$@"
1051     rm -f -- "$TMPO"
1052     header=$1
1053     shift
1054     disable_safe $header
1055     {
1056        echo "#include <$header>"
1057        echo "int main(void) { return 0; }"
1058     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1059 }
1060
1061 check_func(){
1062     log check_func "$@"
1063     func=$1
1064     shift
1065     disable $func
1066     check_ld "cc" "$@" <<EOF && enable $func
1067 extern int $func();
1068 int main(void){ $func(); }
1069 EOF
1070 }
1071
1072 check_complexfunc(){
1073     log check_complexfunc "$@"
1074     func=$1
1075     narg=$2
1076     shift 2
1077     test $narg = 2 && args="f, g" || args="f * I"
1078     disable $func
1079     check_ld "cc" "$@" <<EOF && enable $func
1080 #include <complex.h>
1081 #include <math.h>
1082 float foo(complex float f, complex float g) { return $func($args); }
1083 int main(void){ return (int) foo; }
1084 EOF
1085 }
1086
1087 check_mathfunc(){
1088     log check_mathfunc "$@"
1089     func=$1
1090     narg=$2
1091     shift 2
1092     test $narg = 2 && args="f, g" || args="f"
1093     disable $func
1094     check_ld "cc" "$@" <<EOF && enable $func
1095 #include <math.h>
1096 float foo(float f, float g) { return $func($args); }
1097 int main(void){ return (int) foo; }
1098 EOF
1099 }
1100
1101 check_func_headers(){
1102     log check_func_headers "$@"
1103     headers=$1
1104     funcs=$2
1105     shift 2
1106     {
1107         for hdr in $headers; do
1108             print_include $hdr
1109         done
1110         for func in $funcs; do
1111             echo "long check_$func(void) { return (long) $func; }"
1112         done
1113         echo "int main(void) { return 0; }"
1114     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1115 }
1116
1117 check_class_headers_cpp(){
1118     log check_class_headers_cpp "$@"
1119     headers=$1
1120     classes=$2
1121     shift 2
1122     {
1123         for hdr in $headers; do
1124             echo "#include <$hdr>"
1125         done
1126         echo "int main(void) { "
1127         i=1
1128         for class in $classes; do
1129             echo "$class obj$i;"
1130             i=$(expr $i + 1)
1131         done
1132         echo "return 0; }"
1133     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1134 }
1135
1136 check_cpp_condition(){
1137     log check_cpp_condition "$@"
1138     header=$1
1139     condition=$2
1140     shift 2
1141     check_cpp "$@" <<EOF
1142 #include <$header>
1143 #if !($condition)
1144 #error "unsatisfied condition: $condition"
1145 #endif
1146 EOF
1147 }
1148
1149 check_lib(){
1150     log check_lib "$@"
1151     header="$1"
1152     func="$2"
1153     shift 2
1154     check_header $header && check_func $func "$@" && add_extralibs "$@"
1155 }
1156
1157 check_lib2(){
1158     log check_lib2 "$@"
1159     headers="$1"
1160     funcs="$2"
1161     shift 2
1162     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1163 }
1164
1165 check_lib_cpp(){
1166     log check_lib_cpp "$@"
1167     headers="$1"
1168     classes="$2"
1169     shift 2
1170     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1171 }
1172
1173 check_pkg_config(){
1174     log check_pkg_config "$@"
1175     pkgandversion="$1"
1176     pkg="${1%% *}"
1177     headers="$2"
1178     funcs="$3"
1179     shift 3
1180     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1181     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1182     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1183     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1184         set_safe "${pkg}_cflags" $pkg_cflags   &&
1185         set_safe "${pkg}_libs"   $pkg_libs
1186 }
1187
1188 check_exec(){
1189     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1190 }
1191
1192 check_exec_crash(){
1193     code=$(cat)
1194
1195     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1196     # are safe but may not be available everywhere.  Thus we use
1197     # raise(SIGTERM) instead.  The check is run in a subshell so we
1198     # can redirect the "Terminated" message from the shell.  SIGBUS
1199     # is not defined by standard C so it is used conditionally.
1200
1201     (check_exec "$@") >> $logfile 2>&1 <<EOF
1202 #include <signal.h>
1203 static void sighandler(int sig){
1204     raise(SIGTERM);
1205 }
1206 int foo(void){
1207     $code
1208 }
1209 int (*func_ptr)(void) = foo;
1210 int main(void){
1211     signal(SIGILL, sighandler);
1212     signal(SIGFPE, sighandler);
1213     signal(SIGSEGV, sighandler);
1214 #ifdef SIGBUS
1215     signal(SIGBUS, sighandler);
1216 #endif
1217     return func_ptr();
1218 }
1219 EOF
1220 }
1221
1222 check_type(){
1223     log check_type "$@"
1224     headers=$1
1225     type=$2
1226     shift 2
1227     disable_safe "$type"
1228     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1229 }
1230
1231 check_struct(){
1232     log check_struct "$@"
1233     headers=$1
1234     struct=$2
1235     member=$3
1236     shift 3
1237     disable_safe "${struct}_${member}"
1238     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1239         enable_safe "${struct}_${member}"
1240 }
1241
1242 check_builtin(){
1243     log check_builtin "$@"
1244     name=$1
1245     headers=$2
1246     builtin=$3
1247     shift 3
1248     disable "$name"
1249     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1250 }
1251
1252 check_compile_assert(){
1253     log check_compile_assert "$@"
1254     name=$1
1255     headers=$2
1256     condition=$3
1257     shift 3
1258     disable "$name"
1259     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1260 }
1261
1262 require(){
1263     name="$1"
1264     header="$2"
1265     func="$3"
1266     shift 3
1267     check_lib $header $func "$@" || die "ERROR: $name not found"
1268 }
1269
1270 require2(){
1271     name="$1"
1272     headers="$2"
1273     func="$3"
1274     shift 3
1275     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1276 }
1277
1278 require_cpp(){
1279     name="$1"
1280     headers="$2"
1281     classes="$3"
1282     shift 3
1283     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1284 }
1285
1286 use_pkg_config(){
1287     pkg="$1"
1288     check_pkg_config "$@" || return 1
1289     add_cflags    $(get_safe "${pkg}_cflags")
1290     add_extralibs $(get_safe "${pkg}_libs")
1291 }
1292
1293 require_pkg_config(){
1294     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1295 }
1296
1297 require_libfreetype(){
1298     log require_libfreetype "$@"
1299     pkg="freetype2"
1300     check_cmd $pkg_config --exists --print-errors $pkg \
1301       || die "ERROR: $pkg not found"
1302     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1303     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1304     {
1305         echo "#include <ft2build.h>"
1306         echo "#include FT_FREETYPE_H"
1307         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1308         echo "int main(void) { return 0; }"
1309     } | check_ld "cc" $pkg_cflags $pkg_libs \
1310       && set_safe "${pkg}_cflags" $pkg_cflags \
1311       && set_safe "${pkg}_libs"   $pkg_libs \
1312       || die "ERROR: $pkg not found"
1313     add_cflags    $(get_safe "${pkg}_cflags")
1314     add_extralibs $(get_safe "${pkg}_libs")
1315 }
1316
1317 hostcc_e(){
1318     eval printf '%s\\n' $HOSTCC_E
1319 }
1320
1321 hostcc_o(){
1322     eval printf '%s\\n' $HOSTCC_O
1323 }
1324
1325 check_host_cc(){
1326     log check_host_cc "$@"
1327     cat > $TMPC
1328     log_file $TMPC
1329     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1330 }
1331
1332 check_host_cpp(){
1333     log check_host_cpp "$@"
1334     cat > $TMPC
1335     log_file $TMPC
1336     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1337 }
1338
1339 check_host_cppflags(){
1340     log check_host_cppflags "$@"
1341     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1342 int x;
1343 EOF
1344 }
1345
1346 check_host_cflags(){
1347     log check_host_cflags "$@"
1348     set -- $($host_cflags_filter "$@")
1349     check_host_cc "$@" <<EOF && append host_cflags "$@"
1350 int x;
1351 EOF
1352 }
1353
1354 check_host_cpp_condition(){
1355     log check_host_cpp_condition "$@"
1356     header=$1
1357     condition=$2
1358     shift 2
1359     check_host_cpp "$@" <<EOF
1360 #include <$header>
1361 #if !($condition)
1362 #error "unsatisfied condition: $condition"
1363 #endif
1364 EOF
1365 }
1366
1367 cp_if_changed(){
1368     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1369     mkdir -p "$(dirname $2)"
1370     $cp_f "$1" "$2"
1371 }
1372
1373 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1374 # system-dependent things.
1375
1376 AVCODEC_COMPONENTS="
1377     bsfs
1378     decoders
1379     encoders
1380     hwaccels
1381     parsers
1382 "
1383
1384 AVDEVICE_COMPONENTS="
1385     indevs
1386     outdevs
1387 "
1388 AVFILTER_COMPONENTS="
1389     filters
1390 "
1391 AVFORMAT_COMPONENTS="
1392     demuxers
1393     muxers
1394     protocols
1395 "
1396
1397 AVRESAMPLE_COMPONENTS=""
1398 AVUTIL_COMPONENTS=""
1399
1400 COMPONENT_LIST="
1401     $AVCODEC_COMPONENTS
1402     $AVDEVICE_COMPONENTS
1403     $AVFILTER_COMPONENTS
1404     $AVFORMAT_COMPONENTS
1405     $AVRESAMPLE_COMPONENTS
1406     $AVUTIL_COMPONENTS
1407 "
1408
1409 EXAMPLE_LIST="
1410     avio_reading_example
1411     avio_dir_cmd_example
1412     decoding_encoding_example
1413     demuxing_decoding_example
1414     extract_mvs_example
1415     filter_audio_example
1416     filtering_audio_example
1417     filtering_video_example
1418     metadata_example
1419     muxing_example
1420     qsvdec_example
1421     remuxing_example
1422     resampling_audio_example
1423     scaling_video_example
1424     transcode_aac_example
1425     transcoding_example
1426 "
1427
1428 EXTERNAL_LIBRARY_LIST="
1429     avisynth
1430     bzlib
1431     chromaprint
1432     crystalhd
1433     decklink
1434     frei0r
1435     gcrypt
1436     gmp
1437     gnutls
1438     iconv
1439     ladspa
1440     libaacplus
1441     libass
1442     libbluray
1443     libbs2b
1444     libcaca
1445     libcdio
1446     libcelt
1447     libdc1394
1448     libdcadec
1449     libfaac
1450     libfdk_aac
1451     libflite
1452     libfontconfig
1453     libfreetype
1454     libfribidi
1455     libgme
1456     libgsm
1457     libiec61883
1458     libilbc
1459     libkvazaar
1460     libmfx
1461     libmodplug
1462     libmp3lame
1463     libnut
1464     libopencore_amrnb
1465     libopencore_amrwb
1466     libopencv
1467     libopenh264
1468     libopenjpeg
1469     libopus
1470     libpulse
1471     libquvi
1472     librtmp
1473     librubberband
1474     libschroedinger
1475     libshine
1476     libsmbclient
1477     libsnappy
1478     libsoxr
1479     libspeex
1480     libssh
1481     libstagefright_h264
1482     libtesseract
1483     libtheora
1484     libtwolame
1485     libutvideo
1486     libv4l2
1487     libvidstab
1488     libvo_aacenc
1489     libvo_amrwbenc
1490     libvorbis
1491     libvpx
1492     libwavpack
1493     libwebp
1494     libx264
1495     libx265
1496     libxavs
1497     libxcb
1498     libxcb_shm
1499     libxcb_shape
1500     libxcb_xfixes
1501     libxvid
1502     libzimg
1503     libzmq
1504     libzvbi
1505     lzma
1506     mmal
1507     netcdf
1508     nvenc
1509     openal
1510     opencl
1511     opengl
1512     openssl
1513     schannel
1514     sdl
1515     securetransport
1516     x11grab
1517     xlib
1518     zlib
1519 "
1520
1521 DOCUMENT_LIST="
1522     doc
1523     htmlpages
1524     manpages
1525     podpages
1526     txtpages
1527 "
1528
1529 FEATURE_LIST="
1530     ftrapv
1531     gray
1532     hardcoded_tables
1533     runtime_cpudetect
1534     safe_bitstream_reader
1535     shared
1536     small
1537     static
1538     swscale_alpha
1539 "
1540
1541 HWACCEL_LIST="
1542     d3d11va
1543     dxva2
1544     vaapi
1545     vda
1546     vdpau
1547     videotoolbox
1548     xvmc
1549 "
1550
1551 LIBRARY_LIST="
1552     avcodec
1553     avdevice
1554     avfilter
1555     avformat
1556     avresample
1557     avutil
1558     postproc
1559     swresample
1560     swscale
1561 "
1562
1563 LICENSE_LIST="
1564     gpl
1565     nonfree
1566     version3
1567 "
1568
1569 PROGRAM_LIST="
1570     ffplay
1571     ffprobe
1572     ffserver
1573     ffmpeg
1574 "
1575
1576 SUBSYSTEM_LIST="
1577     dct
1578     dwt
1579     error_resilience
1580     faan
1581     fast_unaligned
1582     fft
1583     lsp
1584     lzo
1585     mdct
1586     pixelutils
1587     network
1588     rdft
1589 "
1590
1591 CONFIG_LIST="
1592     $COMPONENT_LIST
1593     $DOCUMENT_LIST
1594     $EXAMPLE_LIST
1595     $EXTERNAL_LIBRARY_LIST
1596     $FEATURE_LIST
1597     $HWACCEL_LIST
1598     $LICENSE_LIST
1599     $LIBRARY_LIST
1600     $PROGRAM_LIST
1601     $SUBSYSTEM_LIST
1602     fontconfig
1603     incompatible_libav_abi
1604     memalign_hack
1605     memory_poisoning
1606     neon_clobber_test
1607     pic
1608     pod2man
1609     raise_major
1610     thumb
1611     valgrind_backtrace
1612     xmm_clobber_test
1613 "
1614
1615 THREADS_LIST="
1616     pthreads
1617     os2threads
1618     w32threads
1619 "
1620
1621 ATOMICS_LIST="
1622     atomics_gcc
1623     atomics_suncc
1624     atomics_win32
1625 "
1626
1627 ARCH_LIST="
1628     aarch64
1629     alpha
1630     arm
1631     avr32
1632     avr32_ap
1633     avr32_uc
1634     bfin
1635     ia64
1636     m68k
1637     mips
1638     mips64
1639     parisc
1640     ppc
1641     ppc64
1642     s390
1643     sh4
1644     sparc
1645     sparc64
1646     tilegx
1647     tilepro
1648     tomi
1649     x86
1650     x86_32
1651     x86_64
1652 "
1653
1654 ARCH_EXT_LIST_ARM="
1655     armv5te
1656     armv6
1657     armv6t2
1658     armv8
1659     neon
1660     vfp
1661     vfpv3
1662     setend
1663 "
1664
1665 ARCH_EXT_LIST_MIPS="
1666     mipsfpu
1667     mips32r2
1668     mips64r2
1669     mips64r6
1670     mipsdsp
1671     mipsdspr2
1672     msa
1673 "
1674
1675 ARCH_EXT_LIST_LOONGSON="
1676     loongson2
1677     loongson3
1678     mmi
1679 "
1680
1681 ARCH_EXT_LIST_X86_SIMD="
1682     aesni
1683     amd3dnow
1684     amd3dnowext
1685     avx
1686     avx2
1687     fma3
1688     fma4
1689     mmx
1690     mmxext
1691     sse
1692     sse2
1693     sse3
1694     sse4
1695     sse42
1696     ssse3
1697     xop
1698 "
1699
1700 ARCH_EXT_LIST_PPC="
1701     altivec
1702     dcbzl
1703     ldbrx
1704     power8
1705     ppc4xx
1706     vsx
1707 "
1708
1709 ARCH_EXT_LIST_X86="
1710     $ARCH_EXT_LIST_X86_SIMD
1711     cpunop
1712     i686
1713 "
1714
1715 ARCH_EXT_LIST="
1716     $ARCH_EXT_LIST_ARM
1717     $ARCH_EXT_LIST_PPC
1718     $ARCH_EXT_LIST_X86
1719     $ARCH_EXT_LIST_MIPS
1720     $ARCH_EXT_LIST_LOONGSON
1721 "
1722
1723 ARCH_FEATURES="
1724     aligned_stack
1725     fast_64bit
1726     fast_clz
1727     fast_cmov
1728     local_aligned_8
1729     local_aligned_16
1730     local_aligned_32
1731     simd_align_16
1732 "
1733
1734 BUILTIN_LIST="
1735     atomic_cas_ptr
1736     atomic_compare_exchange
1737     machine_rw_barrier
1738     MemoryBarrier
1739     mm_empty
1740     rdtsc
1741     sarestart
1742     sync_val_compare_and_swap
1743 "
1744 HAVE_LIST_CMDLINE="
1745     inline_asm
1746     symver
1747     yasm
1748 "
1749
1750 HAVE_LIST_PUB="
1751     bigendian
1752     fast_unaligned
1753     incompatible_libav_abi
1754 "
1755
1756 HEADERS_LIST="
1757     alsa_asoundlib_h
1758     altivec_h
1759     arpa_inet_h
1760     asm_types_h
1761     cdio_paranoia_h
1762     cdio_paranoia_paranoia_h
1763     dev_bktr_ioctl_bt848_h
1764     dev_bktr_ioctl_meteor_h
1765     dev_ic_bt8xx_h
1766     dev_video_bktr_ioctl_bt848_h
1767     dev_video_meteor_ioctl_meteor_h
1768     direct_h
1769     dirent_h
1770     dlfcn_h
1771     d3d11_h
1772     dxva_h
1773     ES2_gl_h
1774     gsm_h
1775     io_h
1776     mach_mach_time_h
1777     machine_ioctl_bt848_h
1778     machine_ioctl_meteor_h
1779     malloc_h
1780     openjpeg_1_5_openjpeg_h
1781     OpenGL_gl3_h
1782     poll_h
1783     sndio_h
1784     soundcard_h
1785     sys_mman_h
1786     sys_param_h
1787     sys_resource_h
1788     sys_select_h
1789     sys_soundcard_h
1790     sys_time_h
1791     sys_un_h
1792     sys_videoio_h
1793     termios_h
1794     udplite_h
1795     unistd_h
1796     valgrind_valgrind_h
1797     windows_h
1798     winsock2_h
1799 "
1800
1801 INTRINSICS_LIST="
1802     intrinsics_neon
1803 "
1804
1805 COMPLEX_FUNCS="
1806     cabs
1807     cexp
1808 "
1809
1810 MATH_FUNCS="
1811     atanf
1812     atan2f
1813     cbrt
1814     cbrtf
1815     copysign
1816     cosf
1817     erf
1818     exp2
1819     exp2f
1820     expf
1821     hypot
1822     isinf
1823     isnan
1824     ldexpf
1825     llrint
1826     llrintf
1827     log2
1828     log2f
1829     log10f
1830     lrint
1831     lrintf
1832     powf
1833     rint
1834     round
1835     roundf
1836     sinf
1837     trunc
1838     truncf
1839 "
1840
1841 SYSTEM_FUNCS="
1842     access
1843     aligned_malloc
1844     arc4random
1845     clock_gettime
1846     closesocket
1847     CommandLineToArgvW
1848     CoTaskMemFree
1849     CryptGenRandom
1850     dlopen
1851     fcntl
1852     flt_lim
1853     fork
1854     getaddrinfo
1855     gethrtime
1856     getopt
1857     GetProcessAffinityMask
1858     GetProcessMemoryInfo
1859     GetProcessTimes
1860     getrusage
1861     GetSystemTimeAsFileTime
1862     gettimeofday
1863     glob
1864     glXGetProcAddress
1865     gmtime_r
1866     inet_aton
1867     isatty
1868     jack_port_get_latency_range
1869     kbhit
1870     localtime_r
1871     lstat
1872     lzo1x_999_compress
1873     mach_absolute_time
1874     MapViewOfFile
1875     memalign
1876     mkstemp
1877     mmap
1878     mprotect
1879     nanosleep
1880     PeekNamedPipe
1881     posix_memalign
1882     pthread_cancel
1883     sched_getaffinity
1884     SetConsoleTextAttribute
1885     SetConsoleCtrlHandler
1886     setmode
1887     setrlimit
1888     Sleep
1889     strerror_r
1890     sysconf
1891     sysctl
1892     usleep
1893     UTGetOSTypeFromString
1894     VirtualAlloc
1895     wglGetProcAddress
1896 "
1897
1898 TOOLCHAIN_FEATURES="
1899     as_dn_directive
1900     as_func
1901     as_object_arch
1902     asm_mod_q
1903     attribute_may_alias
1904     attribute_packed
1905     ebp_available
1906     ebx_available
1907     gnu_as
1908     gnu_windres
1909     ibm_asm
1910     inline_asm_labels
1911     inline_asm_nonlocal_labels
1912     inline_asm_direct_symbol_refs
1913     pragma_deprecated
1914     rsync_contimeout
1915     symver_asm_label
1916     symver_gnu_asm
1917     vfp_args
1918     xform_asm
1919     xmm_clobbers
1920 "
1921
1922 TYPES_LIST="
1923     CONDITION_VARIABLE_Ptr
1924     socklen_t
1925     struct_addrinfo
1926     struct_group_source_req
1927     struct_ip_mreq_source
1928     struct_ipv6_mreq
1929     struct_pollfd
1930     struct_rusage_ru_maxrss
1931     struct_sctp_event_subscribe
1932     struct_sockaddr_in6
1933     struct_sockaddr_sa_len
1934     struct_sockaddr_storage
1935     struct_stat_st_mtim_tv_nsec
1936     struct_v4l2_frmivalenum_discrete
1937 "
1938
1939 HAVE_LIST="
1940     $ARCH_EXT_LIST
1941     $(add_suffix _external $ARCH_EXT_LIST)
1942     $(add_suffix _inline   $ARCH_EXT_LIST)
1943     $ARCH_FEATURES
1944     $ATOMICS_LIST
1945     $BUILTIN_LIST
1946     $COMPLEX_FUNCS
1947     $HAVE_LIST_CMDLINE
1948     $HAVE_LIST_PUB
1949     $HEADERS_LIST
1950     $INTRINSICS_LIST
1951     $MATH_FUNCS
1952     $SYSTEM_FUNCS
1953     $THREADS_LIST
1954     $TOOLCHAIN_FEATURES
1955     $TYPES_LIST
1956     atomics_native
1957     dos_paths
1958     dxva2api_cobj
1959     dxva2_lib
1960     winrt
1961     libc_msvcrt
1962     libdc1394_1
1963     libdc1394_2
1964     makeinfo
1965     makeinfo_html
1966     perl
1967     pod2man
1968     sdl
1969     section_data_rel_ro
1970     texi2html
1971     threads
1972     vaapi_x11
1973     vdpau_x11
1974     xlib
1975 "
1976
1977 # options emitted with CONFIG_ prefix but not available on the command line
1978 CONFIG_EXTRA="
1979     aandcttables
1980     ac3dsp
1981     audio_frame_queue
1982     audiodsp
1983     blockdsp
1984     bswapdsp
1985     cabac
1986     dirac_parse
1987     dvprofile
1988     exif
1989     faandct
1990     faanidct
1991     fdctdsp
1992     flacdsp
1993     fmtconvert
1994     frame_thread_encoder
1995     g722dsp
1996     golomb
1997     gplv3
1998     h263dsp
1999     h264chroma
2000     h264dsp
2001     h264pred
2002     h264qpel
2003     hpeldsp
2004     huffman
2005     huffyuvdsp
2006     huffyuvencdsp
2007     idctdsp
2008     iirfilter
2009     imdct15
2010     intrax8
2011     ividsp
2012     jpegtables
2013     libx262
2014     lgplv3
2015     llauddsp
2016     llviddsp
2017     lpc
2018     lzf
2019     me_cmp
2020     mpeg_er
2021     mpegaudio
2022     mpegaudiodsp
2023     mpegvideo
2024     mpegvideoenc
2025     mss34dsp
2026     pixblockdsp
2027     qpeldsp
2028     qsv
2029     qsvdec
2030     qsvenc
2031     rangecoder
2032     riffdec
2033     riffenc
2034     rtpdec
2035     rtpenc_chain
2036     rv34dsp
2037     sinewin
2038     snappy
2039     startcode
2040     texturedsp
2041     texturedspenc
2042     tpeldsp
2043     videodsp
2044     vp3dsp
2045     vp56dsp
2046     vp8dsp
2047     wma_freqs
2048     wmv2dsp
2049 "
2050
2051 CMDLINE_SELECT="
2052     $ARCH_EXT_LIST
2053     $CONFIG_LIST
2054     $HAVE_LIST_CMDLINE
2055     $THREADS_LIST
2056     asm
2057     cross_compile
2058     debug
2059     extra_warnings
2060     logging
2061     lto
2062     optimizations
2063     rpath
2064     stripping
2065 "
2066
2067 PATHS_LIST="
2068     bindir
2069     datadir
2070     docdir
2071     incdir
2072     libdir
2073     mandir
2074     pkgconfigdir
2075     prefix
2076     shlibdir
2077 "
2078
2079 CMDLINE_SET="
2080     $PATHS_LIST
2081     ar
2082     arch
2083     as
2084     assert_level
2085     build_suffix
2086     cc
2087     objcc
2088     cpu
2089     cross_prefix
2090     custom_allocator
2091     cxx
2092     dep_cc
2093     doxygen
2094     env
2095     extra_version
2096     gas
2097     host_cc
2098     host_cflags
2099     host_ld
2100     host_ldflags
2101     host_libs
2102     host_os
2103     install
2104     ld
2105     logfile
2106     malloc_prefix
2107     nm
2108     optflags
2109     pkg_config
2110     pkg_config_flags
2111     progs_suffix
2112     random_seed
2113     ranlib
2114     samples
2115     strip
2116     sws_max_filter_size
2117     sysinclude
2118     sysroot
2119     target_exec
2120     target_os
2121     target_path
2122     target_samples
2123     tempprefix
2124     toolchain
2125     valgrind
2126     yasmexe
2127 "
2128
2129 CMDLINE_APPEND="
2130     extra_cflags
2131     extra_cxxflags
2132     extra_objcflags
2133     host_cppflags
2134 "
2135
2136 # code dependency declarations
2137
2138 # architecture extensions
2139
2140 armv5te_deps="arm"
2141 armv6_deps="arm"
2142 armv6t2_deps="arm"
2143 armv8_deps="aarch64"
2144 neon_deps_any="aarch64 arm"
2145 intrinsics_neon_deps="neon"
2146 vfp_deps_any="aarch64 arm"
2147 vfpv3_deps="vfp"
2148 setend_deps="arm"
2149
2150 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2151
2152 mipsfpu_deps="mips"
2153 mipsdsp_deps="mips"
2154 mipsdspr2_deps="mips"
2155 mips32r2_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 rdft_select="fft"
2229 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2230 mpeg_er_select="error_resilience"
2231 mpegaudio_select="mpegaudiodsp"
2232 mpegaudiodsp_select="dct"
2233 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2234 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2235 qsvdec_select="qsv"
2236 qsvenc_select="qsv"
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="fmtconvert 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 mpeg1video_decoder"
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 flashsv_decoder_select="zlib"
2299 flashsv_encoder_select="zlib"
2300 flashsv2_encoder_select="zlib"
2301 flashsv2_decoder_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_encoder_deps="libmfx"
2326 hevc_qsv_decoder_deps="libmfx"
2327 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
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_encoder_select="audio_frame_queue lpc audiodsp"
2398 ra_144_decoder_select="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 vc1image_decoder_select="vc1_decoder"
2439 vc1_qsv_decoder_deps="libmfx"
2440 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
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"
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 zerocodec_decoder_select="zlib"
2466 zlib_decoder_select="zlib"
2467 zlib_encoder_select="zlib"
2468 zmbv_decoder_select="zlib"
2469 zmbv_encoder_select="zlib"
2470
2471 # hardware accelerators
2472 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2473 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2474 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2475 vaapi_deps="va_va_h"
2476 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2477 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2478 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2479 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2480 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2481 xvmc_deps="X11_extensions_XvMClib_h"
2482
2483 h263_vaapi_hwaccel_deps="vaapi"
2484 h263_vaapi_hwaccel_select="h263_decoder"
2485 h263_videotoolbox_hwaccel_deps="videotoolbox"
2486 h263_videotoolbox_hwaccel_select="h263_decoder"
2487 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2488 h264_d3d11va_hwaccel_deps="d3d11va"
2489 h264_d3d11va_hwaccel_select="h264_decoder"
2490 h264_dxva2_hwaccel_deps="dxva2"
2491 h264_dxva2_hwaccel_select="h264_decoder"
2492 h264_mmal_decoder_deps="mmal"
2493 h264_mmal_hwaccel_deps="mmal"
2494 h264_mmal_decoder_select="h264_decoder"
2495 h264_mmal_encoder_deps="mmal"
2496 h264_qsv_hwaccel_deps="libmfx"
2497 h264_vaapi_hwaccel_deps="vaapi"
2498 h264_vaapi_hwaccel_select="h264_decoder"
2499 h264_vda_decoder_deps="vda"
2500 h264_vda_decoder_select="h264_decoder"
2501 h264_vda_hwaccel_deps="vda"
2502 h264_vda_hwaccel_select="h264_decoder"
2503 h264_vda_old_hwaccel_deps="vda"
2504 h264_vda_old_hwaccel_select="h264_decoder"
2505 h264_vdpau_decoder_deps="vdpau"
2506 h264_vdpau_decoder_select="h264_decoder"
2507 h264_vdpau_hwaccel_deps="vdpau"
2508 h264_vdpau_hwaccel_select="h264_decoder"
2509 h264_videotoolbox_hwaccel_deps="videotoolbox"
2510 h264_videotoolbox_hwaccel_select="h264_decoder"
2511 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2512 hevc_d3d11va_hwaccel_select="hevc_decoder"
2513 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2514 hevc_dxva2_hwaccel_select="hevc_decoder"
2515 hevc_qsv_hwaccel_deps="libmfx"
2516 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2517 hevc_vaapi_hwaccel_select="hevc_decoder"
2518 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2519 hevc_vdpau_hwaccel_select="hevc_decoder"
2520 mpeg_vdpau_decoder_deps="vdpau"
2521 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2522 mpeg_xvmc_hwaccel_deps="xvmc"
2523 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2524 mpeg1_vdpau_decoder_deps="vdpau"
2525 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2526 mpeg1_vdpau_hwaccel_deps="vdpau"
2527 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2528 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2529 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2530 mpeg1_xvmc_hwaccel_deps="xvmc"
2531 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2532 mpeg2_crystalhd_decoder_select="crystalhd"
2533 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2534 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2535 mpeg2_dxva2_hwaccel_deps="dxva2"
2536 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2537 mpeg2_mmal_decoder_deps="mmal"
2538 mpeg2_mmal_hwaccel_deps="mmal"
2539 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2540 mpeg2_qsv_hwaccel_deps="libmfx"
2541 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2542 mpeg2_vaapi_hwaccel_deps="vaapi"
2543 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2544 mpeg2_vdpau_hwaccel_deps="vdpau"
2545 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2546 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2547 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2548 mpeg2_xvmc_hwaccel_deps="xvmc"
2549 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2550 mpeg4_crystalhd_decoder_select="crystalhd"
2551 mpeg4_vaapi_hwaccel_deps="vaapi"
2552 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2553 mpeg4_vdpau_decoder_deps="vdpau"
2554 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2555 mpeg4_vdpau_hwaccel_deps="vdpau"
2556 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2557 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2558 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2559 msmpeg4_crystalhd_decoder_select="crystalhd"
2560 vc1_crystalhd_decoder_select="crystalhd"
2561 vc1_d3d11va_hwaccel_deps="d3d11va"
2562 vc1_d3d11va_hwaccel_select="vc1_decoder"
2563 vc1_dxva2_hwaccel_deps="dxva2"
2564 vc1_dxva2_hwaccel_select="vc1_decoder"
2565 vc1_vaapi_hwaccel_deps="vaapi"
2566 vc1_vaapi_hwaccel_select="vc1_decoder"
2567 vc1_vdpau_decoder_deps="vdpau"
2568 vc1_vdpau_decoder_select="vc1_decoder"
2569 vc1_vdpau_hwaccel_deps="vdpau"
2570 vc1_vdpau_hwaccel_select="vc1_decoder"
2571 vc1_mmal_decoder_deps="mmal"
2572 vc1_mmal_hwaccel_deps="mmal"
2573 vc1_mmal_decoder_select="vc1_decoder"
2574 vc1_qsv_hwaccel_deps="libmfx"
2575 vc1_qsv_hwaccel_select="qsvdec_vc1"
2576 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2577 vp9_d3d11va_hwaccel_select="vp9_decoder"
2578 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2579 vp9_dxva2_hwaccel_select="vp9_decoder"
2580 wmv3_crystalhd_decoder_select="crystalhd"
2581 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2582 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2583 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2584 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2585 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2586
2587 # parsers
2588 h264_parser_select="h264_decoder"
2589 hevc_parser_select="golomb"
2590 mpegvideo_parser_select="mpegvideo"
2591 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2592 vc1_parser_select="mpegvideo startcode vc1_decoder"
2593
2594 # bitstream_filters
2595 mjpeg2jpeg_bsf_select="jpegtables"
2596
2597 # external libraries
2598 chromaprint_muxer_deps="chromaprint"
2599 libaacplus_encoder_deps="libaacplus"
2600 libcelt_decoder_deps="libcelt"
2601 libdcadec_decoder_deps="libdcadec"
2602 libfaac_encoder_deps="libfaac"
2603 libfaac_encoder_select="audio_frame_queue"
2604 libfdk_aac_decoder_deps="libfdk_aac"
2605 libfdk_aac_encoder_deps="libfdk_aac"
2606 libfdk_aac_encoder_select="audio_frame_queue"
2607 libgme_demuxer_deps="libgme"
2608 libgsm_decoder_deps="libgsm"
2609 libgsm_encoder_deps="libgsm"
2610 libgsm_ms_decoder_deps="libgsm"
2611 libgsm_ms_encoder_deps="libgsm"
2612 libilbc_decoder_deps="libilbc"
2613 libilbc_encoder_deps="libilbc"
2614 libkvazaar_encoder_deps="libkvazaar"
2615 libmodplug_demuxer_deps="libmodplug"
2616 libmp3lame_encoder_deps="libmp3lame"
2617 libmp3lame_encoder_select="audio_frame_queue"
2618 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2619 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2620 libopencore_amrnb_encoder_select="audio_frame_queue"
2621 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2622 libopenh264_encoder_deps="libopenh264"
2623 libopenjpeg_decoder_deps="libopenjpeg"
2624 libopenjpeg_encoder_deps="libopenjpeg"
2625 libopus_decoder_deps="libopus"
2626 libopus_encoder_deps="libopus"
2627 libopus_encoder_select="audio_frame_queue"
2628 libquvi_demuxer_deps="libquvi"
2629 libschroedinger_decoder_deps="libschroedinger"
2630 libschroedinger_encoder_deps="libschroedinger"
2631 libshine_encoder_deps="libshine"
2632 libshine_encoder_select="audio_frame_queue"
2633 libspeex_decoder_deps="libspeex"
2634 libspeex_encoder_deps="libspeex"
2635 libspeex_encoder_select="audio_frame_queue"
2636 libstagefright_h264_decoder_deps="libstagefright_h264"
2637 libtheora_encoder_deps="libtheora"
2638 libtwolame_encoder_deps="libtwolame"
2639 libvo_aacenc_encoder_deps="libvo_aacenc"
2640 libvo_aacenc_encoder_select="audio_frame_queue"
2641 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2642 libvorbis_decoder_deps="libvorbis"
2643 libvorbis_encoder_deps="libvorbis"
2644 libvorbis_encoder_select="audio_frame_queue"
2645 libvpx_vp8_decoder_deps="libvpx"
2646 libvpx_vp8_encoder_deps="libvpx"
2647 libvpx_vp9_decoder_deps="libvpx"
2648 libvpx_vp9_encoder_deps="libvpx"
2649 libwavpack_encoder_deps="libwavpack"
2650 libwebp_encoder_deps="libwebp"
2651 libwebp_anim_encoder_deps="libwebp"
2652 libx262_encoder_deps="libx262"
2653 libx264_encoder_deps="libx264"
2654 libx264rgb_encoder_deps="libx264"
2655 libx264rgb_encoder_select="libx264_encoder"
2656 libx265_encoder_deps="libx265"
2657 libxavs_encoder_deps="libxavs"
2658 libxvid_encoder_deps="libxvid"
2659 libutvideo_decoder_deps="libutvideo"
2660 libutvideo_encoder_deps="libutvideo"
2661 libzvbi_teletext_decoder_deps="libzvbi"
2662 nvenc_encoder_deps="nvenc"
2663 nvenc_h264_encoder_deps="nvenc"
2664 nvenc_hevc_encoder_deps="nvenc"
2665
2666 # demuxers / muxers
2667 ac3_demuxer_select="ac3_parser"
2668 asf_demuxer_select="riffdec"
2669 asf_o_demuxer_select="riffdec"
2670 asf_muxer_select="riffenc"
2671 asf_stream_muxer_select="asf_muxer"
2672 avi_demuxer_select="riffdec exif"
2673 avi_muxer_select="riffenc"
2674 avisynth_demuxer_deps="avisynth"
2675 avisynth_demuxer_select="riffdec"
2676 caf_demuxer_select="riffdec"
2677 dash_muxer_select="mp4_muxer"
2678 dirac_demuxer_select="dirac_parser"
2679 dts_demuxer_select="dca_parser"
2680 dtshd_demuxer_select="dca_parser"
2681 dv_demuxer_select="dvprofile"
2682 dv_muxer_select="dvprofile"
2683 dxa_demuxer_select="riffdec"
2684 eac3_demuxer_select="ac3_parser"
2685 f4v_muxer_select="mov_muxer"
2686 flac_demuxer_select="flac_parser"
2687 hds_muxer_select="flv_muxer"
2688 hls_muxer_select="mpegts_muxer"
2689 image2_alias_pix_demuxer_select="image2_demuxer"
2690 image2_brender_pix_demuxer_select="image2_demuxer"
2691 ipod_muxer_select="mov_muxer"
2692 ismv_muxer_select="mov_muxer"
2693 libnut_demuxer_deps="libnut"
2694 libnut_muxer_deps="libnut"
2695 matroska_audio_muxer_select="matroska_muxer"
2696 matroska_demuxer_select="riffdec"
2697 matroska_demuxer_suggest="bzlib lzo zlib"
2698 matroska_muxer_select="riffenc"
2699 mmf_muxer_select="riffenc"
2700 mov_demuxer_select="riffdec"
2701 mov_demuxer_suggest="zlib"
2702 mov_muxer_select="riffenc rtpenc_chain"
2703 mp3_demuxer_select="mpegaudio_parser"
2704 mp4_muxer_select="mov_muxer"
2705 mpegts_muxer_select="adts_muxer latm_muxer"
2706 mpegtsraw_demuxer_select="mpegts_demuxer"
2707 mxf_d10_muxer_select="mxf_muxer"
2708 mxf_opatom_muxer_select="mxf_muxer"
2709 nut_muxer_select="riffenc"
2710 nuv_demuxer_select="riffdec"
2711 oga_muxer_select="ogg_muxer"
2712 ogg_demuxer_select="dirac_parse"
2713 opus_muxer_select="ogg_muxer"
2714 psp_muxer_select="mov_muxer"
2715 rtp_demuxer_select="sdp_demuxer"
2716 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2717 rtsp_demuxer_select="http_protocol rtpdec"
2718 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2719 sap_demuxer_select="sdp_demuxer"
2720 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2721 sdp_demuxer_select="rtpdec"
2722 smoothstreaming_muxer_select="ismv_muxer"
2723 spdif_muxer_select="aac_parser"
2724 spx_muxer_select="ogg_muxer"
2725 tak_demuxer_select="tak_parser"
2726 tg2_muxer_select="mov_muxer"
2727 tgp_muxer_select="mov_muxer"
2728 vobsub_demuxer_select="mpegps_demuxer"
2729 w64_demuxer_select="wav_demuxer"
2730 w64_muxer_select="wav_muxer"
2731 wav_demuxer_select="riffdec"
2732 wav_muxer_select="riffenc"
2733 webm_muxer_select="riffenc"
2734 wtv_demuxer_select="riffdec"
2735 wtv_muxer_select="riffenc"
2736 xmv_demuxer_select="riffdec"
2737 xwma_demuxer_select="riffdec"
2738
2739 # indevs / outdevs
2740 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2741 alsa_outdev_deps="alsa_asoundlib_h"
2742 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2743 avfoundation_indev_select="avfoundation"
2744 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2745 caca_outdev_deps="libcaca"
2746 decklink_outdev_deps="decklink pthreads"
2747 decklink_outdev_extralibs="-lstdc++"
2748 decklink_indev_deps="decklink pthreads"
2749 decklink_indev_extralibs="-lstdc++"
2750 dshow_indev_deps="IBaseFilter"
2751 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2752 dv1394_indev_deps="dv1394"
2753 dv1394_indev_select="dv_demuxer"
2754 fbdev_indev_deps="linux_fb_h"
2755 fbdev_outdev_deps="linux_fb_h"
2756 gdigrab_indev_deps="CreateDIBSection"
2757 gdigrab_indev_extralibs="-lgdi32"
2758 gdigrab_indev_select="bmp_decoder"
2759 iec61883_indev_deps="libiec61883"
2760 jack_indev_deps="jack_jack_h sem_timedwait"
2761 lavfi_indev_deps="avfilter"
2762 libcdio_indev_deps="libcdio"
2763 libdc1394_indev_deps="libdc1394"
2764 libv4l2_indev_deps="libv4l2"
2765 openal_indev_deps="openal"
2766 opengl_outdev_deps="opengl"
2767 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2768 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2769 pulse_indev_deps="libpulse"
2770 pulse_outdev_deps="libpulse"
2771 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2772 qtkit_indev_select="qtkit"
2773 sdl_outdev_deps="sdl"
2774 sndio_indev_deps="sndio_h"
2775 sndio_outdev_deps="sndio_h"
2776 v4l_indev_deps="linux_videodev_h"
2777 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2778 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2779 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2780 vfwcap_indev_extralibs="-lavicap32"
2781 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2782 xv_outdev_extralibs="-lXv -lX11 -lXext"
2783 x11grab_indev_deps="x11grab"
2784 x11grab_xcb_indev_deps="libxcb"
2785
2786 # protocols
2787 async_protocol_deps="threads"
2788 bluray_protocol_deps="libbluray"
2789 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2790 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2791 ffrtmpcrypt_protocol_select="tcp_protocol"
2792 ffrtmphttp_protocol_deps="!librtmp_protocol"
2793 ffrtmphttp_protocol_select="http_protocol"
2794 ftp_protocol_select="tcp_protocol"
2795 gopher_protocol_select="network"
2796 http_protocol_select="tcp_protocol"
2797 httpproxy_protocol_select="tcp_protocol"
2798 https_protocol_select="tls_protocol"
2799 icecast_protocol_select="http_protocol"
2800 librtmp_protocol_deps="librtmp"
2801 librtmpe_protocol_deps="librtmp"
2802 librtmps_protocol_deps="librtmp"
2803 librtmpt_protocol_deps="librtmp"
2804 librtmpte_protocol_deps="librtmp"
2805 libsmbclient_protocol_deps="libsmbclient gplv3"
2806 libssh_protocol_deps="libssh"
2807 mmsh_protocol_select="http_protocol"
2808 mmst_protocol_select="network"
2809 rtmp_protocol_deps="!librtmp_protocol"
2810 rtmp_protocol_select="tcp_protocol"
2811 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2812 rtmps_protocol_deps="!librtmp_protocol"
2813 rtmps_protocol_select="tls_protocol"
2814 rtmpt_protocol_select="ffrtmphttp_protocol"
2815 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2816 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2817 rtp_protocol_select="udp_protocol"
2818 sctp_protocol_deps="struct_sctp_event_subscribe"
2819 sctp_protocol_select="network"
2820 srtp_protocol_select="rtp_protocol"
2821 tcp_protocol_select="network"
2822 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2823 tls_gnutls_protocol_select="tcp_protocol"
2824 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2825 tls_openssl_protocol_select="tcp_protocol"
2826 tls_schannel_protocol_deps="schannel"
2827 tls_schannel_protocol_select="tcp_protocol"
2828 tls_securetransport_protocol_deps="securetransport"
2829 tls_securetransport_protocol_select="tcp_protocol"
2830 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2831 udp_protocol_select="network"
2832 udplite_protocol_select="network"
2833 unix_protocol_deps="sys_un_h"
2834 unix_protocol_select="network"
2835
2836 # filters
2837 aemphasis_filter_deps="cabs cexp"
2838 amovie_filter_deps="avcodec avformat"
2839 aresample_filter_deps="swresample"
2840 ass_filter_deps="libass"
2841 asyncts_filter_deps="avresample"
2842 atempo_filter_deps="avcodec"
2843 atempo_filter_select="rdft"
2844 azmq_filter_deps="libzmq"
2845 blackframe_filter_deps="gpl"
2846 boxblur_filter_deps="gpl"
2847 bs2b_filter_deps="libbs2b"
2848 colormatrix_filter_deps="gpl"
2849 cover_rect_filter_deps="avcodec avformat gpl"
2850 cropdetect_filter_deps="gpl"
2851 delogo_filter_deps="gpl"
2852 deshake_filter_select="pixelutils"
2853 drawtext_filter_deps="libfreetype"
2854 dynaudnorm_filter_deps="erf"
2855 ebur128_filter_deps="gpl"
2856 eq_filter_deps="gpl"
2857 fftfilt_filter_deps="avcodec"
2858 fftfilt_filter_select="rdft"
2859 flite_filter_deps="libflite"
2860 find_rect_filter_deps="avcodec avformat gpl"
2861 frei0r_filter_deps="frei0r dlopen"
2862 frei0r_src_filter_deps="frei0r dlopen"
2863 fspp_filter_deps="gpl"
2864 geq_filter_deps="gpl"
2865 histeq_filter_deps="gpl"
2866 hqdn3d_filter_deps="gpl"
2867 interlace_filter_deps="gpl"
2868 kerndeint_filter_deps="gpl"
2869 ladspa_filter_deps="ladspa dlopen"
2870 mcdeint_filter_deps="avcodec gpl"
2871 movie_filter_deps="avcodec avformat"
2872 mpdecimate_filter_deps="gpl"
2873 mpdecimate_filter_select="pixelutils"
2874 mptestsrc_filter_deps="gpl"
2875 negate_filter_deps="lut_filter"
2876 perspective_filter_deps="gpl"
2877 pp7_filter_deps="gpl"
2878 ocr_filter_deps="libtesseract"
2879 ocv_filter_deps="libopencv"
2880 owdenoise_filter_deps="gpl"
2881 pan_filter_deps="swresample"
2882 phase_filter_deps="gpl"
2883 pp_filter_deps="gpl postproc"
2884 pullup_filter_deps="gpl"
2885 removelogo_filter_deps="avcodec avformat swscale"
2886 repeatfields_filter_deps="gpl"
2887 resample_filter_deps="avresample"
2888 rubberband_filter_deps="librubberband"
2889 sab_filter_deps="gpl swscale"
2890 scale_filter_deps="swscale"
2891 scale2ref_filter_deps="swscale"
2892 select_filter_select="pixelutils"
2893 smartblur_filter_deps="gpl swscale"
2894 showcqt_filter_deps="avcodec avformat swscale"
2895 showcqt_filter_select="fft"
2896 showfreqs_filter_deps="avcodec"
2897 showfreqs_filter_select="fft"
2898 showspectrum_filter_deps="avcodec"
2899 showspectrum_filter_select="rdft"
2900 sofalizer_filter_deps="netcdf avcodec"
2901 sofalizer_filter_select="fft"
2902 spp_filter_deps="gpl avcodec"
2903 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2904 stereo3d_filter_deps="gpl"
2905 subtitles_filter_deps="avformat avcodec libass"
2906 super2xsai_filter_deps="gpl"
2907 tinterlace_filter_deps="gpl"
2908 vidstabdetect_filter_deps="libvidstab"
2909 vidstabtransform_filter_deps="libvidstab"
2910 pixfmts_super2xsai_test_deps="super2xsai_filter"
2911 tinterlace_merge_test_deps="tinterlace_filter"
2912 tinterlace_pad_test_deps="tinterlace_filter"
2913 uspp_filter_deps="gpl avcodec"
2914 zmq_filter_deps="libzmq"
2915 zoompan_filter_deps="swscale"
2916 zscale_filter_deps="libzimg"
2917
2918 # examples
2919 avio_reading="avformat avcodec avutil"
2920 avio_dir_cmd="avformat avutil"
2921 avcodec_example_deps="avcodec avutil"
2922 decoding_encoding_example_deps="avcodec avformat avutil"
2923 demuxing_decoding_example_deps="avcodec avformat avutil"
2924 extract_mvs_example_deps="avcodec avformat avutil"
2925 filter_audio_example_deps="avfilter avutil"
2926 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2927 filtering_video_example_deps="avfilter avcodec avformat avutil"
2928 metadata_example_deps="avformat avutil"
2929 muxing_example_deps="avcodec avformat avutil swscale"
2930 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2931 remuxing_example_deps="avcodec avformat avutil"
2932 resampling_audio_example_deps="avutil swresample"
2933 scaling_video_example_deps="avutil swscale"
2934 transcode_aac_example_deps="avcodec avformat swresample"
2935 transcoding_example_deps="avfilter avcodec avformat avutil"
2936
2937 # libraries, in linking order
2938 avcodec_deps="avutil"
2939 avdevice_deps="avformat avcodec avutil"
2940 avfilter_deps="avutil"
2941 avformat_deps="avcodec avutil"
2942 avresample_deps="avutil"
2943 postproc_deps="avutil gpl"
2944 swresample_deps="avutil"
2945 swscale_deps="avutil"
2946
2947 # programs
2948 ffmpeg_deps="avcodec avfilter avformat swresample"
2949 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2950                null_filter
2951                setpts_filter trim_filter"
2952 ffplay_deps="avcodec avformat swscale swresample sdl"
2953 ffplay_libs='$sdl_libs'
2954 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2955 ffprobe_deps="avcodec avformat"
2956 ffserver_deps="avformat fork sarestart"
2957 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2958
2959 # documentation
2960 podpages_deps="perl"
2961 manpages_deps="perl pod2man"
2962 htmlpages_deps="perl"
2963 htmlpages_deps_any="makeinfo_html texi2html"
2964 txtpages_deps="perl makeinfo"
2965 doc_deps_any="manpages htmlpages podpages txtpages"
2966
2967 # default parameters
2968
2969 logfile="config.log"
2970
2971 # installation paths
2972 prefix_default="/usr/local"
2973 bindir_default='${prefix}/bin'
2974 datadir_default='${prefix}/share/ffmpeg'
2975 docdir_default='${prefix}/share/doc/ffmpeg'
2976 incdir_default='${prefix}/include'
2977 libdir_default='${prefix}/lib'
2978 mandir_default='${prefix}/share/man'
2979
2980 # toolchain
2981 ar_default="ar"
2982 cc_default="gcc"
2983 cxx_default="g++"
2984 host_cc_default="gcc"
2985 cp_f="cp -f"
2986 doxygen_default="doxygen"
2987 install="install"
2988 ln_s="ln -s -f"
2989 nm_default="nm -g"
2990 objformat="elf"
2991 pkg_config_default=pkg-config
2992 ranlib_default="ranlib"
2993 strip_default="strip"
2994 yasmexe_default="yasm"
2995 windres_default="windres"
2996
2997 # OS
2998 target_os_default=$(tolower $(uname -s))
2999 host_os=$target_os_default
3000
3001 # machine
3002 if test "$target_os_default" = aix; then
3003     arch_default=$(uname -p)
3004     strip_default="strip -X32_64"
3005 else
3006     arch_default=$(uname -m)
3007 fi
3008 cpu="generic"
3009 intrinsics="none"
3010
3011 # configurable options
3012 enable $PROGRAM_LIST
3013 enable $DOCUMENT_LIST
3014 enable $EXAMPLE_LIST
3015 enable $(filter_out avresample $LIBRARY_LIST)
3016 enable stripping
3017
3018 enable asm
3019 enable debug
3020 enable doc
3021 enable faan faandct faanidct
3022 enable optimizations
3023 enable runtime_cpudetect
3024 enable safe_bitstream_reader
3025 enable static
3026 enable swscale_alpha
3027 enable valgrind_backtrace
3028
3029 sws_max_filter_size_default=256
3030 set_default sws_max_filter_size
3031
3032 # Enable hwaccels by default.
3033 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3034 enable xlib
3035
3036 # build settings
3037 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3038 LIBPREF="lib"
3039 LIBSUF=".a"
3040 FULLNAME='$(NAME)$(BUILDSUF)'
3041 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3042 SLIBPREF="lib"
3043 SLIBSUF=".so"
3044 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3045 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3046 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3047 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3048 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3049 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3050
3051 asflags_filter=echo
3052 cflags_filter=echo
3053 ldflags_filter=echo
3054
3055 AS_C='-c'
3056 AS_O='-o $@'
3057 CC_C='-c'
3058 CC_E='-E -o $@'
3059 CC_O='-o $@'
3060 CXX_C='-c'
3061 CXX_O='-o $@'
3062 OBJCC_C='-c'
3063 OBJCC_E='-E -o $@'
3064 OBJCC_O='-o $@'
3065 LD_O='-o $@'
3066 LD_LIB='-l%'
3067 LD_PATH='-L'
3068 HOSTCC_C='-c'
3069 HOSTCC_E='-E -o $@'
3070 HOSTCC_O='-o $@'
3071 HOSTLD_O='-o $@'
3072
3073 host_libs='-lm'
3074 host_cflags_filter=echo
3075 host_ldflags_filter=echo
3076
3077 target_path='$(CURDIR)'
3078
3079 # since the object filename is not given with the -MM flag, the compiler
3080 # is only able to print the basename, and we must add the path ourselves
3081 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3082 DEPFLAGS='-MM'
3083
3084 # find source path
3085 if test -f configure; then
3086     source_path=.
3087 else
3088     source_path=$(cd $(dirname "$0"); pwd)
3089     case "$source_path" in
3090         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3091     esac
3092     test -e "$source_path/config.h" &&
3093         die "Out of tree builds are impossible with config.h in source dir."
3094 fi
3095
3096 for v in "$@"; do
3097     r=${v#*=}
3098     l=${v%"$r"}
3099     r=$(sh_quote "$r")
3100     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3101 done
3102
3103 find_things(){
3104     thing=$1
3105     pattern=$2
3106     file=$source_path/$3
3107     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3108 }
3109
3110 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3111 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3112 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3113 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3114 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3115 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3116 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3117 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3118 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3119 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3120 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3121
3122 ALL_COMPONENTS="
3123     $BSF_LIST
3124     $DECODER_LIST
3125     $DEMUXER_LIST
3126     $ENCODER_LIST
3127     $FILTER_LIST
3128     $HWACCEL_LIST
3129     $INDEV_LIST
3130     $MUXER_LIST
3131     $OUTDEV_LIST
3132     $PARSER_LIST
3133     $PROTOCOL_LIST
3134 "
3135
3136 for n in $COMPONENT_LIST; do
3137     v=$(toupper ${n%s})_LIST
3138     eval enable \$$v
3139     eval ${n}_if_any="\$$v"
3140 done
3141
3142 enable $ARCH_EXT_LIST
3143
3144 die_unknown(){
3145     echo "Unknown option \"$1\"."
3146     echo "See $0 --help for available options."
3147     exit 1
3148 }
3149
3150 print_in_columns() {
3151     cols=$(expr $ncols / 24)
3152     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3153 }
3154
3155 show_list() {
3156     suffix=_$1
3157     shift
3158     echo $* | sed s/$suffix//g | print_in_columns
3159     exit 0
3160 }
3161
3162 rand_list(){
3163     IFS=', '
3164     set -- $*
3165     unset IFS
3166     for thing; do
3167         comp=${thing%:*}
3168         prob=${thing#$comp}
3169         prob=${prob#:}
3170         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3171         echo "prob ${prob:-0.5}"
3172         printf '%s\n' $comp
3173     done
3174 }
3175
3176 do_random(){
3177     action=$1
3178     shift
3179     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3180     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3181 }
3182
3183 for opt do
3184     optval="${opt#*=}"
3185     case "$opt" in
3186         --extra-ldflags=*)
3187             add_ldflags $optval
3188         ;;
3189         --extra-ldexeflags=*)
3190             add_ldexeflags $optval
3191         ;;
3192         --extra-ldlibflags=*)
3193             add_ldlibflags $optval
3194         ;;
3195         --extra-libs=*)
3196             add_extralibs $optval
3197         ;;
3198         --disable-devices)
3199             disable $INDEV_LIST $OUTDEV_LIST
3200         ;;
3201         --enable-debug=*)
3202             debuglevel="$optval"
3203         ;;
3204         --disable-programs)
3205             disable $PROGRAM_LIST
3206         ;;
3207         --disable-everything)
3208             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3209         ;;
3210         --disable-all)
3211             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3212             disable $LIBRARY_LIST $PROGRAM_LIST doc
3213             enable avutil
3214         ;;
3215         --enable-random|--disable-random)
3216             action=${opt%%-random}
3217             do_random ${action#--} $COMPONENT_LIST
3218         ;;
3219         --enable-random=*|--disable-random=*)
3220             action=${opt%%-random=*}
3221             do_random ${action#--} $optval
3222         ;;
3223         --enable-*=*|--disable-*=*)
3224             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3225             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3226             eval list=\$$(toupper $thing)_LIST
3227             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3228             list=$(filter "$name" $list)
3229             [ "$list" = "" ] && warn "Option $opt did not match anything"
3230             $action $list
3231         ;;
3232         --enable-?*|--disable-?*)
3233             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3234             if is_in $option $COMPONENT_LIST; then
3235                 test $action = disable && action=unset
3236                 eval $action \$$(toupper ${option%s})_LIST
3237             elif is_in $option $CMDLINE_SELECT; then
3238                 $action $option
3239             else
3240                 die_unknown $opt
3241             fi
3242         ;;
3243         --list-*)
3244             NAME="${opt#--list-}"
3245             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3246             NAME=${NAME%s}
3247             eval show_list $NAME \$$(toupper $NAME)_LIST
3248         ;;
3249         --help|-h) show_help
3250         ;;
3251         --fatal-warnings) enable fatal_warnings
3252         ;;
3253         *)
3254             optname="${opt%%=*}"
3255             optname="${optname#--}"
3256             optname=$(echo "$optname" | sed 's/-/_/g')
3257             if is_in $optname $CMDLINE_SET; then
3258                 eval $optname='$optval'
3259             elif is_in $optname $CMDLINE_APPEND; then
3260                 append $optname "$optval"
3261             else
3262                 die_unknown $opt
3263             fi
3264         ;;
3265     esac
3266 done
3267
3268 for e in $env; do
3269     eval "export $e"
3270 done
3271
3272 disabled logging && logfile=/dev/null
3273
3274 # Disable all the library-specific components if the library itself
3275 # is disabled, see AVCODEC_LIST and following _LIST variables.
3276
3277 disable_components(){
3278     disabled ${1} && disable $(
3279         eval components="\$$(toupper ${1})_COMPONENTS"
3280         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3281     )
3282 }
3283
3284 map 'disable_components $v' $LIBRARY_LIST
3285
3286 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3287 set >> $logfile
3288
3289 test -n "$valgrind" && toolchain="valgrind-memcheck"
3290
3291 case "$toolchain" in
3292     clang-asan)
3293         cc_default="clang"
3294         add_cflags  -fsanitize=address
3295         add_ldflags -fsanitize=address
3296     ;;
3297     clang-tsan)
3298         cc_default="clang"
3299         add_cflags  -fsanitize=thread -pie
3300         add_ldflags -fsanitize=thread -pie
3301     ;;
3302     clang-usan)
3303         cc_default="clang"
3304         add_cflags  -fsanitize=undefined
3305         add_ldflags -fsanitize=undefined
3306     ;;
3307     gcc-asan)
3308         cc_default="gcc"
3309         add_cflags  -fsanitize=address
3310         add_ldflags -fsanitize=address
3311     ;;
3312     gcc-tsan)
3313         cc_default="gcc"
3314         add_cflags  -fsanitize=thread -pie -fPIC
3315         add_ldflags -fsanitize=thread -pie -fPIC
3316     ;;
3317     gcc-usan)
3318         cc_default="gcc"
3319         add_cflags  -fsanitize=undefined
3320         add_ldflags -fsanitize=undefined
3321     ;;
3322     valgrind-massif)
3323         target_exec_default=${valgrind:-"valgrind"}
3324         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"
3325     ;;
3326     valgrind-memcheck)
3327         target_exec_default=${valgrind:-"valgrind"}
3328         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3329     ;;
3330     msvc)
3331         # Check whether the current MSVC version needs the C99 converter.
3332         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3333         # support enough of C99 to build ffmpeg. Default to the new
3334         # behaviour if the regexp was unable to match anything, since this
3335         # successfully parses the version number of existing supported
3336         # versions that require the converter (MSVC 2010 and 2012).
3337         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3338         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3339             cc_default="cl"
3340         else
3341             cc_default="c99wrap cl"
3342         fi
3343         ld_default="$source_path/compat/windows/mslink"
3344         nm_default="dumpbin -symbols"
3345         ar_default="lib"
3346         case "$arch" in
3347         arm*)
3348             as_default="armasm"
3349             ;;
3350         esac
3351         target_os_default="win32"
3352         # Use a relative path for TMPDIR. This makes sure all the
3353         # ffconf temp files are written with a relative path, avoiding
3354         # issues with msys/win32 path conversion for MSVC parameters
3355         # such as -Fo<file> or -out:<file>.
3356         TMPDIR=.
3357     ;;
3358     icl)
3359         cc_default="icl"
3360         ld_default="xilink"
3361         nm_default="dumpbin -symbols"
3362         ar_default="xilib"
3363         target_os_default="win32"
3364         TMPDIR=.
3365     ;;
3366     gcov)
3367         add_cflags  -fprofile-arcs -ftest-coverage
3368         add_ldflags -fprofile-arcs -ftest-coverage
3369     ;;
3370     hardened)
3371         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3372         add_cflags   -fno-strict-overflow -fstack-protector-all
3373         add_ldflags  -Wl,-z,relro -Wl,-z,now
3374     ;;
3375     ?*)
3376         die "Unknown toolchain $toolchain"
3377     ;;
3378 esac
3379
3380 test -n "$cross_prefix" && enable cross_compile
3381
3382 if enabled cross_compile; then
3383     test -n "$arch" && test -n "$target_os" ||
3384         die "Must specify target arch and OS when cross-compiling"
3385 fi
3386
3387 ar_default="${cross_prefix}${ar_default}"
3388 cc_default="${cross_prefix}${cc_default}"
3389 cxx_default="${cross_prefix}${cxx_default}"
3390 nm_default="${cross_prefix}${nm_default}"
3391 pkg_config_default="${cross_prefix}${pkg_config_default}"
3392 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3393     ranlib_default="${cross_prefix}${ranlib_default} -D"
3394 else
3395     ranlib_default="${cross_prefix}${ranlib_default}"
3396 fi
3397 strip_default="${cross_prefix}${strip_default}"
3398 windres_default="${cross_prefix}${windres_default}"
3399
3400 sysinclude_default="${sysroot}/usr/include"
3401
3402 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3403     target_exec target_os yasmexe
3404 enabled cross_compile || host_cc_default=$cc
3405 set_default host_cc
3406
3407 pkg_config_fail_message=""
3408 if ! $pkg_config --version >/dev/null 2>&1; then
3409     warn "$pkg_config not found, library detection may fail."
3410     pkg_config=false
3411 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3412     pkg_config_fail_message="
3413 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3414 fi
3415
3416 if test $doxygen != $doxygen_default && \
3417   ! $doxygen --version >/dev/null 2>&1; then
3418     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3419 fi
3420
3421 exesuf() {
3422     case $1 in
3423         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3424     esac
3425 }
3426
3427 EXESUF=$(exesuf $target_os)
3428 HOSTEXESUF=$(exesuf $host_os)
3429
3430 # set temporary file name
3431 : ${TMPDIR:=$TEMPDIR}
3432 : ${TMPDIR:=$TMP}
3433 : ${TMPDIR:=/tmp}
3434
3435 if [ -n "$tempprefix" ] ; then
3436     mktemp(){
3437         echo $tempprefix.${HOSTNAME}.${UID}
3438     }
3439 elif ! check_cmd mktemp -u XXXXXX; then
3440     # simple replacement for missing mktemp
3441     # NOT SAFE FOR GENERAL USE
3442     mktemp(){
3443         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3444     }
3445 fi
3446
3447 tmpfile(){
3448     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3449         (set -C; exec > $tmp) 2>/dev/null ||
3450         die "Unable to create temporary file in $TMPDIR."
3451     append TMPFILES $tmp
3452     eval $1=$tmp
3453 }
3454
3455 trap 'rm -f -- $TMPFILES' EXIT
3456
3457 tmpfile TMPASM .asm
3458 tmpfile TMPC   .c
3459 tmpfile TMPCPP .cpp
3460 tmpfile TMPE   $EXESUF
3461 tmpfile TMPH   .h
3462 tmpfile TMPM   .m
3463 tmpfile TMPO   .o
3464 tmpfile TMPS   .S
3465 tmpfile TMPSH  .sh
3466 tmpfile TMPV   .ver
3467
3468 unset -f mktemp
3469
3470 chmod +x $TMPE
3471
3472 # make sure we can execute files in $TMPDIR
3473 cat > $TMPSH 2>> $logfile <<EOF
3474 #! /bin/sh
3475 EOF
3476 chmod +x $TMPSH >> $logfile 2>&1
3477 if ! $TMPSH >> $logfile 2>&1; then
3478     cat <<EOF
3479 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3480 variable to another directory and make sure that it is not mounted noexec.
3481 EOF
3482     die "Sanity test failed."
3483 fi
3484
3485 armasm_flags(){
3486     for flag; do
3487         case $flag in
3488             # Filter out MSVC cl.exe options from cflags that shouldn't
3489             # be passed to gas-preprocessor
3490             -M[TD]*)                                            ;;
3491             *)                  echo $flag                      ;;
3492         esac
3493    done
3494 }
3495
3496 ccc_flags(){
3497     for flag; do
3498         case $flag in
3499             -std=c99)           echo -c99                       ;;
3500             -mcpu=*)            echo -arch ${flag#*=}           ;;
3501             -mieee)             echo -ieee                      ;;
3502             -O*|-fast)          echo $flag                      ;;
3503             -fno-math-errno)    echo -assume nomath_errno       ;;
3504             -g)                 echo -g3                        ;;
3505             -Wall)              echo -msg_enable level2         ;;
3506             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3507             -Wl,*)              echo $flag                      ;;
3508             -f*|-W*)                                            ;;
3509             *)                  echo $flag                      ;;
3510         esac
3511    done
3512 }
3513
3514 cparser_flags(){
3515     for flag; do
3516         case $flag in
3517             -Wno-switch)             echo -Wno-switch-enum ;;
3518             -Wno-format-zero-length) ;;
3519             -Wdisabled-optimization) ;;
3520             -Wno-pointer-sign)       echo -Wno-other ;;
3521             *)                       echo $flag ;;
3522         esac
3523     done
3524 }
3525
3526 msvc_common_flags(){
3527     for flag; do
3528         case $flag in
3529             # In addition to specifying certain flags under the compiler
3530             # specific filters, they must be specified here as well or else the
3531             # generic catch all at the bottom will print the original flag.
3532             -Wall)                ;;
3533             -std=c99)             ;;
3534             # Common flags
3535             -fomit-frame-pointer) ;;
3536             -g)                   echo -Z7 ;;
3537             -fno-math-errno)      ;;
3538             -fno-common)          ;;
3539             -fno-signed-zeros)    ;;
3540             -fPIC)                ;;
3541             -mthumb)              ;;
3542             -march=*)             ;;
3543             -lz)                  echo zlib.lib ;;
3544             -lavifil32)           echo vfw32.lib ;;
3545             -lavicap32)           echo vfw32.lib user32.lib ;;
3546             -l*)                  echo ${flag#-l}.lib ;;
3547             -LARGEADDRESSAWARE)   echo $flag ;;
3548             -L*)                  echo -libpath:${flag#-L} ;;
3549             *)                    echo $flag ;;
3550         esac
3551     done
3552 }
3553
3554 msvc_flags(){
3555     msvc_common_flags "$@"
3556     for flag; do
3557         case $flag in
3558             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3559                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3560                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3561                                        -wd4307 \
3562                                        -wd4273 -wd4554 -wd4701 ;;
3563         esac
3564     done
3565 }
3566
3567 icl_flags(){
3568     msvc_common_flags "$@"
3569     for flag; do
3570         case $flag in
3571             # Despite what Intel's documentation says -Wall, which is supported
3572             # on Windows, does enable remarks so disable them here.
3573             -Wall)                echo $flag -Qdiag-disable:remark ;;
3574             -std=c99)             echo -Qstd=c99 ;;
3575             -flto)                echo -ipo ;;
3576         esac
3577     done
3578 }
3579
3580 icc_flags(){
3581     for flag; do
3582         case $flag in
3583             -flto)                echo -ipo ;;
3584             *)                    echo $flag ;;
3585         esac
3586     done
3587 }
3588
3589 pgi_flags(){
3590     for flag; do
3591         case $flag in
3592             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3593             -fomit-frame-pointer) echo -Mnoframe ;;
3594             -g)                   echo -gopt ;;
3595             *)                    echo $flag ;;
3596         esac
3597     done
3598 }
3599
3600 suncc_flags(){
3601     for flag; do
3602         case $flag in
3603             -march=*|-mcpu=*)
3604                 case "${flag#*=}" in
3605                     native)                   echo -xtarget=native       ;;
3606                     v9|niagara)               echo -xarch=sparc          ;;
3607                     ultrasparc)               echo -xarch=sparcvis       ;;
3608                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3609                     i586|pentium)             echo -xchip=pentium        ;;
3610                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3611                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3612                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3613                     pentium4*)          echo -xtarget=pentium4           ;;
3614                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3615                     *-sse3)             echo -xarch=sse3                 ;;
3616                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3617                     bonnell)                   echo -xarch=ssse3         ;;
3618                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3619                     westmere)                  echo -xtarget=westmere    ;;
3620                     silvermont)                echo -xarch=sse4_2        ;;
3621                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3622                     core-avx*|ivybridge|haswell|broadwell)
3623                                                echo -xarch=avx           ;;
3624                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3625                     btver1)                    echo -xarch=amdsse4a      ;;
3626                     btver2|bdver*)             echo -xarch=avx           ;;
3627                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3628                     k8|opteron|athlon64|athlon-fx)
3629                                                echo -xarch=sse2a         ;;
3630                     athlon*)                   echo -xarch=pentium_proa  ;;
3631                 esac
3632                 ;;
3633             -std=c99)             echo -xc99              ;;
3634             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3635             -fPIC)                echo -KPIC -xcode=pic32 ;;
3636             -W*,*)                echo $flag              ;;
3637             -f*-*|-W*|-mimpure-text)                      ;;
3638             -shared)              echo -G                 ;;
3639             *)                    echo $flag              ;;
3640         esac
3641     done
3642 }
3643
3644 tms470_flags(){
3645     for flag; do
3646         case $flag in
3647             -march=*|-mcpu=*)
3648                 case "${flag#*=}" in
3649                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3650                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3651                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3652                     armv6*|arm11*)          echo -mv=6   ;;
3653                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3654                                             echo -mv=5e  ;;
3655                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3656                 esac
3657                 ;;
3658             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3659             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3660             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3661             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3662             -msoft-float)   echo --float_support=vfplib       ;;
3663             -O[0-3]|-mf=*)  echo $flag                        ;;
3664             -g)             echo -g -mn                       ;;
3665             -pds=*)         echo $flag                        ;;
3666             -D*|-I*)        echo $flag                        ;;
3667             --gcc|--abi=*)  echo $flag                        ;;
3668             -me)            echo $flag                        ;;
3669         esac
3670     done
3671 }
3672
3673 probe_cc(){
3674     pfx=$1
3675     _cc=$2
3676     first=$3
3677
3678     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3679     unset _ld_o _ldflags _ld_lib _ld_path
3680     unset _depflags _DEPCMD _DEPFLAGS
3681     _flags_filter=echo
3682
3683     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3684         true # no-op to avoid reading stdin in following checks
3685     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3686         _type=llvm_gcc
3687         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3688         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3689         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3690         _cflags_speed='-O3'
3691         _cflags_size='-Os'
3692     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3693         _type=gcc
3694         gcc_version=$($_cc --version | head -n1)
3695         gcc_basever=$($_cc -dumpversion)
3696         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3697         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3698         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3699         case $gcc_basever in
3700             2*) ;;
3701             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3702         esac
3703         if [ "$first" = true ]; then
3704             case $gcc_basever in
3705                 4.2*)
3706                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3707             esac
3708         fi
3709         _cflags_speed='-O3'
3710         _cflags_size='-Os'
3711     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3712         _type=icc
3713         _ident=$($_cc --version | head -n1)
3714         _depflags='-MMD'
3715         _cflags_speed='-O3'
3716         _cflags_size='-Os'
3717         _cflags_noopt='-O1'
3718         _flags_filter=icc_flags
3719     elif $_cc -v 2>&1 | grep -q xlc; then
3720         _type=xlc
3721         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3722         _cflags_speed='-O5'
3723         _cflags_size='-O5 -qcompact'
3724     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3725         _type=ccc
3726         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3727         _DEPFLAGS='-M'
3728         _cflags_speed='-fast'
3729         _cflags_size='-O1'
3730         _flags_filter=ccc_flags
3731     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3732         test -d "$sysroot" || die "No valid sysroot specified."
3733         _type=armcc
3734         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3735         armcc_conf="$PWD/armcc.conf"
3736         $_cc --arm_linux_configure                 \
3737              --arm_linux_config_file="$armcc_conf" \
3738              --configure_sysroot="$sysroot"        \
3739              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3740              die "Error creating armcc configuration file."
3741         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3742         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3743         as_default="${cross_prefix}gcc"
3744         _depflags='-MMD'
3745         _cflags_speed='-O3'
3746         _cflags_size='-Os'
3747     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3748         _type=tms470
3749         _ident=$($_cc -version | head -n1 | tr -s ' ')
3750         _flags='--gcc --abi=eabi -me'
3751         _cc_e='-ppl -fe=$@'
3752         _cc_o='-fe=$@'
3753         _depflags='-ppa -ppd=$(@:.o=.d)'
3754         _cflags_speed='-O3 -mf=5'
3755         _cflags_size='-O3 -mf=2'
3756         _flags_filter=tms470_flags
3757     elif $_cc -v 2>&1 | grep -q clang; then
3758         _type=clang
3759         _ident=$($_cc --version 2>/dev/null | head -n1)
3760         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3761         _cflags_speed='-O3'
3762         _cflags_size='-Os'
3763     elif $_cc -V 2>&1 | grep -q Sun; then
3764         _type=suncc
3765         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3766         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3767         _DEPFLAGS='-xM1 -xc99'
3768         _ldflags='-std=c99'
3769         _cflags_speed='-O5'
3770         _cflags_size='-O5 -xspace'
3771         _flags_filter=suncc_flags
3772     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3773         _type=pathscale
3774         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3775         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3776         _cflags_speed='-O2'
3777         _cflags_size='-Os'
3778         _flags_filter='filter_out -Wdisabled-optimization'
3779     elif $_cc -v 2>&1 | grep -q Open64; then
3780         _type=open64
3781         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3782         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3783         _cflags_speed='-O2'
3784         _cflags_size='-Os'
3785         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3786     elif $_cc -V 2>&1 | grep -q Portland; then
3787         _type=pgi
3788         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3789         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3790         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3791         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3792         _cflags_noopt="-O"
3793         _flags_filter=pgi_flags
3794     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3795         _type=armasm
3796         _ident=$($_cc | head -n1)
3797         # 4509: "This form of conditional instruction is deprecated"
3798         _flags="-nologo -ignore 4509"
3799         _flags_filter=armasm_flags
3800     elif $_cc 2>&1 | grep -q Intel; then
3801         _type=icl
3802         _ident=$($_cc 2>&1 | head -n1)
3803         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3804         # Not only is O3 broken on 13.x+ but it is slower on all previous
3805         # versions (tested) as well.
3806         _cflags_speed="-O2"
3807         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3808         if $_cc 2>&1 | grep -q Linker; then
3809             _ld_o='-out:$@'
3810         else
3811             _ld_o='-Fe$@'
3812         fi
3813         _cc_o='-Fo$@'
3814         _cc_e='-P'
3815         _flags_filter=icl_flags
3816         _ld_lib='lib%.a'
3817         _ld_path='-libpath:'
3818         # -Qdiag-error to make icl error when seeing certain unknown arguments
3819         _flags='-nologo -Qdiag-error:4044,10157'
3820         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3821         # with MSVC which enables it by default.
3822         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3823         disable stripping
3824     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3825         _type=msvc
3826         _ident=$($_cc 2>&1 | head -n1)
3827         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3828         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3829         _cflags_speed="-O2"
3830         _cflags_size="-O1"
3831         if $_cc -nologo- 2>&1 | grep -q Linker; then
3832             _ld_o='-out:$@'
3833         else
3834             _ld_o='-Fe$@'
3835         fi
3836         _cc_o='-Fo$@'
3837         _cc_e='-P -Fi$@'
3838         _flags_filter=msvc_flags
3839         _ld_lib='lib%.a'
3840         _ld_path='-libpath:'
3841         _flags='-nologo'
3842         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3843         disable stripping
3844     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3845         _type=cparser
3846         _ident=$($_cc --version | head -n1)
3847         _depflags='-MMD'
3848         _cflags_speed='-O4'
3849         _cflags_size='-O2'
3850         _flags_filter=cparser_flags
3851     fi
3852
3853     eval ${pfx}_type=\$_type
3854     eval ${pfx}_ident=\$_ident
3855 }
3856
3857 set_ccvars(){
3858     eval ${1}_C=\${_cc_c-\${${1}_C}}
3859     eval ${1}_E=\${_cc_e-\${${1}_E}}
3860     eval ${1}_O=\${_cc_o-\${${1}_O}}
3861
3862     if [ -n "$_depflags" ]; then
3863         eval ${1}_DEPFLAGS=\$_depflags
3864     else
3865         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3866         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3867         eval DEP${1}FLAGS=\$_flags
3868     fi
3869 }
3870
3871 probe_cc cc "$cc" "true"
3872 cflags_filter=$_flags_filter
3873 cflags_speed=$_cflags_speed
3874 cflags_size=$_cflags_size
3875 cflags_noopt=$_cflags_noopt
3876 add_cflags $_flags $_cflags
3877 cc_ldflags=$_ldflags
3878 set_ccvars CC
3879
3880 probe_cc hostcc "$host_cc"
3881 host_cflags_filter=$_flags_filter
3882 add_host_cflags  $_flags $_cflags
3883 set_ccvars HOSTCC
3884
3885 test -n "$cc_type" && enable $cc_type ||
3886     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3887
3888 : ${as_default:=$cc}
3889 : ${objcc_default:=$cc}
3890 : ${dep_cc_default:=$cc}
3891 : ${ld_default:=$cc}
3892 : ${host_ld_default:=$host_cc}
3893 set_default ar as objcc dep_cc ld host_ld windres
3894
3895 probe_cc as "$as"
3896 asflags_filter=$_flags_filter
3897 add_asflags $_flags $_cflags
3898 set_ccvars AS
3899
3900 probe_cc objcc "$objcc"
3901 objcflags_filter=$_flags_filter
3902 add_objcflags $_flags $_cflags
3903 set_ccvars OBJC
3904
3905 probe_cc ld "$ld"
3906 ldflags_filter=$_flags_filter
3907 add_ldflags $_flags $_ldflags
3908 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3909 LD_O=${_ld_o-$LD_O}
3910 LD_LIB=${_ld_lib-$LD_LIB}
3911 LD_PATH=${_ld_path-$LD_PATH}
3912
3913 probe_cc hostld "$host_ld"
3914 host_ldflags_filter=$_flags_filter
3915 add_host_ldflags $_flags $_ldflags
3916 HOSTLD_O=${_ld_o-$HOSTLD_O}
3917
3918 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3919     probe_cc depcc "$dep_cc"
3920     CCDEP=${_DEPCMD:-$DEPCMD}
3921     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3922     DEPCCFLAGS=$_flags
3923 fi
3924
3925 if $ar 2>&1 | grep -q Microsoft; then
3926     arflags="-nologo"
3927     ar_o='-out:$@'
3928 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3929     arflags="rq"
3930     ar_o='$@'
3931 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3932     arflags='-Xany -r -c'
3933     ar_o='$@'
3934 elif $ar 2>&1 | grep -q "\[D\] "; then
3935     arflags="rcD"
3936     ar_o='$@'
3937 else
3938     arflags="rc"
3939     ar_o='$@'
3940 fi
3941
3942 add_cflags $extra_cflags
3943 add_cxxflags $extra_cxxflags
3944 add_objcflags $extra_objcflags
3945 add_asflags $extra_cflags
3946
3947 if test -n "$sysroot"; then
3948     case "$cc_type" in
3949         gcc|llvm_gcc|clang)
3950             add_cppflags --sysroot="$sysroot"
3951             add_ldflags --sysroot="$sysroot"
3952 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3953             add_cppflags -isysroot "$sysroot"
3954             add_ldflags -isysroot "$sysroot"
3955         ;;
3956         tms470)
3957             add_cppflags -I"$sysinclude"
3958             add_ldflags  --sysroot="$sysroot"
3959         ;;
3960     esac
3961 fi
3962
3963 if test "$cpu" = host; then
3964     enabled cross_compile &&
3965         die "--cpu=host makes no sense when cross-compiling."
3966
3967     case "$cc_type" in
3968         gcc|llvm_gcc)
3969             check_native(){
3970                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3971                 sed -n "/cc1.*$1=/{
3972                             s/.*$1=\\([^ ]*\\).*/\\1/
3973                             p
3974                             q
3975                         }" $TMPE
3976             }
3977             cpu=$(check_native -march || check_native -mcpu)
3978         ;;
3979     esac
3980
3981     test "${cpu:-host}" = host &&
3982         die "--cpu=host not supported with compiler $cc"
3983 fi
3984
3985 # Deal with common $arch aliases
3986 case "$arch" in
3987     aarch64|arm64)
3988         arch="aarch64"
3989     ;;
3990     arm*|iPad*|iPhone*)
3991         arch="arm"
3992     ;;
3993     mips*|IP*)
3994         arch="mips"
3995     ;;
3996     parisc*|hppa*)
3997         arch="parisc"
3998     ;;
3999     "Power Macintosh"|ppc*|powerpc*)
4000         arch="ppc"
4001     ;;
4002     s390|s390x)
4003         arch="s390"
4004     ;;
4005     sh4|sh)
4006         arch="sh4"
4007     ;;
4008     sun4u|sparc*)
4009         arch="sparc"
4010     ;;
4011     tilegx|tile-gx)
4012         arch="tilegx"
4013     ;;
4014     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4015         arch="x86"
4016     ;;
4017 esac
4018
4019 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4020 enable $arch
4021
4022 # Add processor-specific flags
4023 if enabled aarch64; then
4024
4025     case $cpu in
4026         armv*)
4027             cpuflags="-march=$cpu"
4028         ;;
4029         *)
4030             cpuflags="-mcpu=$cpu"
4031         ;;
4032     esac
4033
4034 elif enabled alpha; then
4035
4036     cpuflags="-mcpu=$cpu"
4037
4038 elif enabled arm; then
4039
4040     check_arm_arch() {
4041         check_cpp_condition stddef.h \
4042             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4043             $cpuflags
4044     }
4045
4046     probe_arm_arch() {
4047         if   check_arm_arch 4;        then echo armv4;
4048         elif check_arm_arch 4T;       then echo armv4t;
4049         elif check_arm_arch 5;        then echo armv5;
4050         elif check_arm_arch 5E;       then echo armv5e;
4051         elif check_arm_arch 5T;       then echo armv5t;
4052         elif check_arm_arch 5TE;      then echo armv5te;
4053         elif check_arm_arch 5TEJ;     then echo armv5te;
4054         elif check_arm_arch 6;        then echo armv6;
4055         elif check_arm_arch 6J;       then echo armv6j;
4056         elif check_arm_arch 6K;       then echo armv6k;
4057         elif check_arm_arch 6Z;       then echo armv6z;
4058         elif check_arm_arch 6ZK;      then echo armv6zk;
4059         elif check_arm_arch 6T2;      then echo armv6t2;
4060         elif check_arm_arch 7;        then echo armv7;
4061         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4062         elif check_arm_arch 7S;       then echo armv7-a;
4063         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4064         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4065         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4066         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4067         fi
4068     }
4069
4070     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4071
4072     case $cpu in
4073         armv*)
4074             cpuflags="-march=$cpu"
4075             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4076         ;;
4077         *)
4078             cpuflags="-mcpu=$cpu"
4079             case $cpu in
4080                 cortex-a*)                               subarch=armv7a  ;;
4081                 cortex-r*)                               subarch=armv7r  ;;
4082                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4083                 arm11*)                                  subarch=armv6   ;;
4084                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4085                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4086                 *)                             subarch=$(probe_arm_arch) ;;
4087             esac
4088         ;;
4089     esac
4090
4091     case "$subarch" in
4092         armv5t*)    enable fast_clz                ;;
4093         armv[6-8]*)
4094             enable fast_clz
4095             disabled fast_unaligned || enable fast_unaligned
4096             ;;
4097     esac
4098
4099 elif enabled avr32; then
4100
4101     case $cpu in
4102         ap7[02]0[0-2])
4103             subarch="avr32_ap"
4104             cpuflags="-mpart=$cpu"
4105         ;;
4106         ap)
4107             subarch="avr32_ap"
4108             cpuflags="-march=$cpu"
4109         ;;
4110         uc3[ab]*)
4111             subarch="avr32_uc"
4112             cpuflags="-mcpu=$cpu"
4113         ;;
4114         uc)
4115             subarch="avr32_uc"
4116             cpuflags="-march=$cpu"
4117         ;;
4118     esac
4119
4120 elif enabled bfin; then
4121
4122     cpuflags="-mcpu=$cpu"
4123
4124 elif enabled mips; then
4125
4126     cpuflags="-march=$cpu"
4127
4128     case $cpu in
4129         24kc)
4130             disable mips64r2
4131             disable mips64r6
4132             disable mipsfpu
4133             disable mipsdsp
4134             disable mipsdspr2
4135             disable msa
4136         ;;
4137         24kf*)
4138             disable mips64r2
4139             disable mips64r6
4140             disable mipsdsp
4141             disable mipsdspr2
4142             disable msa
4143         ;;
4144         24kec|34kc|1004kc)
4145             disable mips64r2
4146             disable mips64r6
4147             disable mipsfpu
4148             disable mipsdspr2
4149             disable msa
4150         ;;
4151         24kef*|34kf*|1004kf*)
4152             disable mips64r2
4153             disable mips64r6
4154             disable mipsdspr2
4155             disable msa
4156         ;;
4157         74kc)
4158             disable mips64r2
4159             disable mips64r6
4160             disable mipsfpu
4161             disable msa
4162         ;;
4163         74kf)
4164             disable mips64r2
4165             disable mips64r6
4166             disable msa
4167         ;;
4168         p5600)
4169             disable mips64r2
4170             disable mips64r6
4171             disable mipsdsp
4172             disable mipsdspr2
4173             check_cflags "-mtune=p5600" &&
4174             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4175             add_asflags "-mfp64"
4176         ;;
4177         i6400)
4178             disable mips32r2
4179             disable mips64r2
4180             disable mipsdsp
4181             disable mipsdspr2
4182             check_cflags "-mtune=i6400 -mabi=64" &&
4183             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4184             check_ldflags "-mabi=64" &&
4185             add_asflags "-mfp64"
4186         ;;
4187         loongson*)
4188             disable mipsfpu
4189             disable mips32r2
4190             disable mips64r2
4191             disable mips64r6
4192             disable mipsdsp
4193             disable mipsdspr2
4194             disable msa
4195             enable local_aligned_8 local_aligned_16 local_aligned_32
4196             enable simd_align_16
4197             enable fast_64bit
4198             enable fast_clz
4199             enable fast_cmov
4200             enable fast_unaligned
4201             disable aligned_stack
4202             case $cpu in
4203                 loongson3*)
4204                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4205                 ;;
4206                 loongson2e)
4207                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4208                 ;;
4209                 loongson2f)
4210                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4211                 ;;
4212             esac
4213         ;;
4214         generic)
4215             disable mips64r6
4216             disable msa
4217         ;;
4218         *)
4219             disable mipsfpu
4220             disable mips32r2
4221             disable mips64r2
4222             disable mips64r6
4223             disable mipsdsp
4224             disable mipsdspr2
4225             disable msa
4226         ;;
4227     esac
4228
4229 elif enabled ppc; then
4230
4231     disable ldbrx
4232
4233     case $(tolower $cpu) in
4234         601|ppc601|powerpc601)
4235             cpuflags="-mcpu=601"
4236             disable altivec
4237         ;;
4238         603*|ppc603*|powerpc603*)
4239             cpuflags="-mcpu=603"
4240             disable altivec
4241         ;;
4242         604*|ppc604*|powerpc604*)
4243             cpuflags="-mcpu=604"
4244             disable altivec
4245         ;;
4246         g3|75*|ppc75*|powerpc75*)
4247             cpuflags="-mcpu=750"
4248             disable altivec
4249         ;;
4250         g4|745*|ppc745*|powerpc745*)
4251             cpuflags="-mcpu=7450"
4252             disable vsx
4253         ;;
4254         74*|ppc74*|powerpc74*)
4255             cpuflags="-mcpu=7400"
4256             disable vsx
4257         ;;
4258         g5|970|ppc970|powerpc970)
4259             cpuflags="-mcpu=970"
4260             disable vsx
4261         ;;
4262         power[3-6]*)
4263             cpuflags="-mcpu=$cpu"
4264             disable vsx
4265         ;;
4266         power[7-8]*)
4267             cpuflags="-mcpu=$cpu"
4268         ;;
4269         cell)
4270             cpuflags="-mcpu=cell"
4271             enable ldbrx
4272             disable vsx
4273         ;;
4274         e500mc)
4275             cpuflags="-mcpu=e500mc"
4276             disable altivec
4277         ;;
4278         e500v2)
4279             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4280             disable altivec
4281             disable dcbzl
4282         ;;
4283         e500)
4284             cpuflags="-mcpu=8540 -mhard-float"
4285             disable altivec
4286             disable dcbzl
4287         ;;
4288     esac
4289
4290 elif enabled sparc; then
4291
4292     case $cpu in
4293         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4294             cpuflags="-mcpu=$cpu"
4295         ;;
4296         ultrasparc*|niagara[234])
4297             cpuflags="-mcpu=$cpu"
4298         ;;
4299     esac
4300
4301 elif enabled x86; then
4302
4303     case $cpu in
4304         i[345]86|pentium)
4305             cpuflags="-march=$cpu"
4306             disable i686
4307             disable mmx
4308         ;;
4309         # targets that do NOT support nopl and conditional mov (cmov)
4310         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4311             cpuflags="-march=$cpu"
4312             disable i686
4313         ;;
4314         # targets that do support nopl and conditional mov (cmov)
4315         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4316         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4317             cpuflags="-march=$cpu"
4318             enable i686
4319             enable fast_cmov
4320         ;;
4321         # targets that do support conditional mov but on which it's slow
4322         pentium4|pentium4m|prescott|nocona)
4323             cpuflags="-march=$cpu"
4324             enable i686
4325             disable fast_cmov
4326         ;;
4327     esac
4328
4329 fi
4330
4331 if [ "$cpu" != generic ]; then
4332     add_cflags  $cpuflags
4333     add_asflags $cpuflags
4334     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4335 fi
4336
4337 # compiler sanity check
4338 check_exec <<EOF
4339 int main(void){ return 0; }
4340 EOF
4341 if test "$?" != 0; then
4342     echo "$cc is unable to create an executable file."
4343     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4344         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4345         echo "Only do this if you know what cross compiling means."
4346     fi
4347     die "C compiler test failed."
4348 fi
4349
4350 add_cppflags -D_ISOC99_SOURCE
4351 add_cxxflags -D__STDC_CONSTANT_MACROS
4352 check_cflags -std=c99
4353 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4354 #include <stdlib.h>
4355 EOF
4356 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4357 #include <stdlib.h>
4358 EOF
4359
4360 add_host_cppflags -D_ISOC99_SOURCE
4361 check_host_cflags -std=c99
4362 check_host_cflags -Wall
4363 check_host_cflags -O3
4364
4365 check_64bit(){
4366     arch32=$1
4367     arch64=$2
4368     expr=$3
4369     check_code cc "" "int test[2*($expr) - 1]" &&
4370         subarch=$arch64 || subarch=$arch32
4371 }
4372
4373 case "$arch" in
4374     aarch64|alpha|ia64)
4375         spic=$shared
4376     ;;
4377     mips)
4378         check_64bit mips mips64 '_MIPS_SIM > 1'
4379         spic=$shared
4380     ;;
4381     parisc)
4382         check_64bit parisc parisc64 'sizeof(void *) > 4'
4383         spic=$shared
4384     ;;
4385     ppc)
4386         check_64bit ppc ppc64 'sizeof(void *) > 4'
4387         spic=$shared
4388     ;;
4389     s390)
4390         check_64bit s390 s390x 'sizeof(void *) > 4'
4391         spic=$shared
4392     ;;
4393     sparc)
4394         check_64bit sparc sparc64 'sizeof(void *) > 4'
4395         spic=$shared
4396     ;;
4397     x86)
4398         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4399         # Treat x32 as x64 for now. Note it also needs spic=$shared
4400         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4401             subarch=x86_64
4402         if test "$subarch" = "x86_64"; then
4403             spic=$shared
4404         fi
4405     ;;
4406     ppc)
4407         check_cc <<EOF && subarch="ppc64"
4408         int test[(int)sizeof(char*) - 7];
4409 EOF
4410     ;;
4411 esac
4412
4413 enable $subarch
4414 enabled spic && enable_weak pic
4415
4416 # OS specific
4417 case $target_os in
4418     aix)
4419         SHFLAGS=-shared
4420         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4421         enabled shared && add_ldflags -Wl,-brtl
4422         ;;
4423     android)
4424         disable symver
4425         enable section_data_rel_ro
4426         SLIB_INSTALL_NAME='$(SLIBNAME)'
4427         SLIB_INSTALL_LINKS=
4428         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4429         ;;
4430     haiku)
4431         prefix_default="/boot/common"
4432         network_extralibs="-lnetwork"
4433         host_libs=
4434         ;;
4435     sunos)
4436         SHFLAGS='-shared -Wl,-h,$$(@F)'
4437         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4438         network_extralibs="-lsocket -lnsl"
4439         add_cppflags -D__EXTENSIONS__
4440         # When using suncc to build, the Solaris linker will mark
4441         # an executable with each instruction set encountered by
4442         # the Solaris assembler.  As our libraries contain their own
4443         # guards for processor-specific code, instead suppress
4444         # generation of the HWCAPS ELF section on Solaris x86 only.
4445         enabled_all suncc x86 &&
4446             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4447             add_ldflags -Wl,-M,mapfile
4448         nm_default='nm -P -g'
4449         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4450         ;;
4451     netbsd)
4452         disable symver
4453         oss_indev_extralibs="-lossaudio"
4454         oss_outdev_extralibs="-lossaudio"
4455         enabled gcc || check_ldflags -Wl,-zmuldefs
4456         ;;
4457     openbsd|bitrig)
4458         disable symver
4459         SHFLAGS='-shared'
4460         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4461         SLIB_INSTALL_LINKS=
4462         oss_indev_extralibs="-lossaudio"
4463         oss_outdev_extralibs="-lossaudio"
4464         ;;
4465     dragonfly)
4466         disable symver
4467         ;;
4468     freebsd)
4469         ;;
4470     bsd/os)
4471         add_extralibs -lpoll -lgnugetopt
4472         strip="strip -d"
4473         ;;
4474     darwin)
4475         enabled ppc && add_asflags -force_cpusubtype_ALL
4476         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4477         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4478         strip="${strip} -x"
4479         add_ldflags -Wl,-dynamic,-search_paths_first
4480         SLIBSUF=".dylib"
4481         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4482         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4483         objformat="macho"
4484         enabled x86_64 && objformat="macho64"
4485         enabled_any pic shared x86_64 ||
4486             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4487         ;;
4488     msys*)
4489         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4490         ;;
4491     mingw32*|mingw64*)
4492         if test $target_os = "mingw32ce"; then
4493             disable network
4494         else
4495             target_os=mingw32
4496         fi
4497         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4498         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4499         LIBTARGET=i386
4500         if enabled x86_64; then
4501             LIBTARGET="i386:x86-64"
4502         elif enabled arm; then
4503             LIBTARGET=arm-wince
4504         fi
4505         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4506         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4507         shlibdir_default="$bindir_default"
4508         SLIBPREF=""
4509         SLIBSUF=".dll"
4510         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4511         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4512         dlltool="${cross_prefix}dlltool"
4513         if check_cmd lib.exe -list; then
4514             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4515             if enabled x86_64; then
4516                 LIBTARGET=x64
4517             fi
4518         elif check_cmd $dlltool --version; then
4519             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4520         fi
4521         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4522         SLIB_INSTALL_LINKS=
4523         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4524         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4525         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4526         objformat="win32"
4527         ranlib=:
4528         enable dos_paths
4529         check_ldflags -Wl,--nxcompat,--dynamicbase
4530         # Lets work around some stupidity in binutils.
4531         # ld will strip relocations from executables even though we need them
4532         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4533         # however ld then forgets what the entry point should be (oops) so we
4534         # have to manually (re)set it.
4535         if enabled x86_32; then
4536             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4537         elif enabled x86_64; then
4538             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4539             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4540             # Set image base >4GB for extra entropy with HEASLR
4541             add_ldexeflags -Wl,--image-base,0x140000000
4542             append SHFLAGS -Wl,--image-base,0x180000000
4543         fi
4544         ;;
4545     win32|win64)
4546         disable symver
4547         if enabled shared; then
4548             # Link to the import library instead of the normal static library
4549             # for shared libs.
4550             LD_LIB='%.lib'
4551             # Cannot build both shared and static libs with MSVC or icl.
4552             disable static
4553         fi
4554         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4555         shlibdir_default="$bindir_default"
4556         SLIBPREF=""
4557         SLIBSUF=".dll"
4558         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4559         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4560         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4561         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4562         SLIB_INSTALL_LINKS=
4563         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4564         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4565         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4566         objformat="win32"
4567         ranlib=:
4568         enable dos_paths
4569         ;;
4570     cygwin*)
4571         target_os=cygwin
4572         shlibdir_default="$bindir_default"
4573         SLIBPREF="cyg"
4574         SLIBSUF=".dll"
4575         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4576         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4577         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4578         SLIB_INSTALL_LINKS=
4579         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4580         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4581         objformat="win32"
4582         enable dos_paths
4583         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4584         ;;
4585     *-dos|freedos|opendos)
4586         network_extralibs="-lsocket"
4587         objformat="coff"
4588         enable dos_paths
4589         add_cppflags -U__STRICT_ANSI__
4590         ;;
4591     linux)
4592         enable dv1394
4593         enable section_data_rel_ro
4594         ;;
4595     irix*)
4596         target_os=irix
4597         ranlib="echo ignoring ranlib"
4598         ;;
4599     os/2*)
4600         strip="lxlite -CS"
4601         ln_s="cp -f"
4602         objformat="aout"
4603         add_cppflags -D_GNU_SOURCE
4604         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4605         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4606         LIBSUF="_s.a"
4607         SLIBPREF=""
4608         SLIBSUF=".dll"
4609         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4610         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4611         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4612             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4613             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4614             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4615             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4616         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4617             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4618         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4619         enable dos_paths
4620         enable_weak os2threads
4621         ;;
4622     gnu/kfreebsd)
4623         add_cppflags -D_BSD_SOURCE
4624         ;;
4625     gnu)
4626         ;;
4627     qnx)
4628         add_cppflags -D_QNX_SOURCE
4629         network_extralibs="-lsocket"
4630         ;;
4631     symbian)
4632         SLIBSUF=".dll"
4633         enable dos_paths
4634         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4635         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4636         add_ldflags -Wl,--target1-abs,--no-undefined \
4637                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4638                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4639         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4640                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4641                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4642         ;;
4643     osf1)
4644         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4645         ;;
4646     minix)
4647         ;;
4648     plan9)
4649         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4650                      -D_REENTRANT_SOURCE        \
4651                      -D_RESEARCH_SOURCE         \
4652                      -DFD_SETSIZE=96            \
4653                      -DHAVE_SOCK_OPTS
4654         add_compat strtod.o strtod=avpriv_strtod
4655         network_extralibs='-lbsd'
4656         exeobjs=compat/plan9/main.o
4657         disable ffserver
4658         cp_f='cp'
4659         ;;
4660     none)
4661         ;;
4662     *)
4663         die "Unknown OS '$target_os'."
4664         ;;
4665 esac
4666
4667 # determine libc flavour
4668
4669 probe_libc(){
4670     pfx=$1
4671     pfx_no_=${pfx%_}
4672     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4673     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4674         eval ${pfx}libc_type=uclibc
4675         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4676     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4677         eval ${pfx}libc_type=glibc
4678         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4679     # MinGW headers can be installed on Cygwin, so check for newlib first.
4680     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4681         eval ${pfx}libc_type=newlib
4682         add_${pfx}cppflags -U__STRICT_ANSI__
4683     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4684     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4685         eval ${pfx}libc_type=mingw64
4686         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4687             add_compat msvcrt/snprintf.o
4688             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4689         fi
4690         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4691         eval test \$${pfx_no_}cc_type = "gcc" &&
4692             add_${pfx}cppflags -D__printf__=__gnu_printf__
4693     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4694          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4695         eval ${pfx}libc_type=mingw32
4696         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4697             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4698             die "ERROR: MinGW32 runtime version must be >= 3.15."
4699         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4700         eval test \$${pfx_no_}cc_type = "gcc" &&
4701             add_${pfx}cppflags -D__printf__=__gnu_printf__
4702     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4703         eval ${pfx}libc_type=msvcrt
4704         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4705             if [ "$pfx" = host_ ]; then
4706                 add_host_cppflags -Dsnprintf=_snprintf
4707             else
4708                 add_compat strtod.o strtod=avpriv_strtod
4709                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4710                                              _snprintf=avpriv_snprintf  \
4711                                              vsnprintf=avpriv_vsnprintf
4712             fi
4713         fi
4714         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4715         # 0x601 by default unless something else is set by the user.
4716         # This can easily lead to us detecting functions only present
4717         # in such new versions and producing binaries requiring windows 7.0.
4718         # Therefore explicitly set the default to XP unless the user has
4719         # set something else on the command line.
4720         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4721         # family. For these cases, configure is free to use any functions
4722         # found in the SDK headers by default. (Alternatively, we could force
4723         # _WIN32_WINNT to 0x0602 in that case.)
4724         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4725             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4726 #ifdef WINAPI_FAMILY
4727 #include <winapifamily.h>
4728 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4729 #error not desktop
4730 #endif
4731 #endif
4732 EOF
4733     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4734         eval ${pfx}libc_type=klibc
4735     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4736         eval ${pfx}libc_type=bionic
4737     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4738         eval ${pfx}libc_type=solaris
4739         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4740     fi
4741     check_${pfx}cc <<EOF
4742 #include <time.h>
4743 void *v = localtime_r;
4744 EOF
4745 test "$?" != 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
4746 #include <time.h>
4747 void *v = localtime_r;
4748 EOF
4749
4750 }
4751
4752 probe_libc
4753 test -n "$libc_type" && enable libc_$libc_type
4754 probe_libc host_
4755 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4756
4757 case $libc_type in
4758     bionic)
4759         add_compat strtod.o strtod=avpriv_strtod
4760         ;;
4761 esac
4762
4763 # hacks for compiler/libc/os combinations
4764
4765 if enabled_all tms470 libc_glibc; then
4766     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4767     add_cppflags -D__USER_LABEL_PREFIX__=
4768     add_cppflags -D__builtin_memset=memset
4769     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4770     add_cflags   -pds=48    # incompatible redefinition of macro
4771 fi
4772
4773 if enabled_all ccc libc_glibc; then
4774     add_ldflags -Wl,-z,now  # calls to libots crash without this
4775 fi
4776
4777 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4778     add_cppflags '-I\$(SRC_PATH)/compat/float'
4779
4780 esc(){
4781     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4782 }
4783
4784 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4785
4786 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4787
4788 set_default libdir
4789 : ${shlibdir_default:="$libdir"}
4790 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4791
4792 set_default $PATHS_LIST
4793 set_default nm
4794
4795 # we need to build at least one lib type
4796 if ! enabled_any static shared; then
4797     cat <<EOF
4798 At least one library type must be built.
4799 Specify --enable-static to build the static libraries or --enable-shared to
4800 build the shared libraries as well. To only build the shared libraries specify
4801 --disable-static in addition to --enable-shared.
4802 EOF
4803     exit 1;
4804 fi
4805
4806 die_license_disabled() {
4807     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4808 }
4809
4810 die_license_disabled_gpl() {
4811     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4812 }
4813
4814 die_license_disabled gpl frei0r
4815 die_license_disabled gpl libcdio
4816 die_license_disabled gpl librubberband
4817 die_license_disabled gpl libsmbclient
4818 die_license_disabled gpl libutvideo
4819 die_license_disabled gpl libvidstab
4820 die_license_disabled gpl libx264
4821 die_license_disabled gpl libx265
4822 die_license_disabled gpl libxavs
4823 die_license_disabled gpl libxvid
4824 die_license_disabled gpl libzvbi
4825 die_license_disabled gpl x11grab
4826
4827 die_license_disabled nonfree libaacplus
4828 die_license_disabled nonfree libfaac
4829 die_license_disabled nonfree nvenc
4830 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4831 enabled gpl && die_license_disabled_gpl nonfree openssl
4832
4833 die_license_disabled version3 gmp
4834 die_license_disabled version3 libopencore_amrnb
4835 die_license_disabled version3 libopencore_amrwb
4836 die_license_disabled version3 libsmbclient
4837 die_license_disabled version3 libvo_aacenc
4838 die_license_disabled version3 libvo_amrwbenc
4839
4840 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4841
4842 disabled optimizations || check_cflags -fomit-frame-pointer
4843
4844 enable_weak_pic() {
4845     disabled pic && return
4846     enable pic
4847     add_cppflags -DPIC
4848     case "$target_os" in
4849     mingw*|cygwin*)
4850         ;;
4851     *)
4852         add_cflags -fPIC
4853         ;;
4854     esac
4855     add_asflags  -fPIC
4856 }
4857
4858 enabled pic && enable_weak_pic
4859
4860 check_cc <<EOF || die "Symbol mangling check failed."
4861 int ff_extern;
4862 EOF
4863 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4864 extern_prefix=${sym%%ff_extern*}
4865
4866 check_cc <<EOF && enable_weak inline_asm
4867 void foo(void) { __asm__ volatile ("" ::); }
4868 EOF
4869
4870 _restrict=
4871 for restrict_keyword in restrict __restrict__ __restrict; do
4872     check_cc <<EOF && _restrict=$restrict_keyword && break
4873 void foo(char * $restrict_keyword p);
4874 EOF
4875 done
4876
4877 check_cc <<EOF && enable pragma_deprecated
4878 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4879 EOF
4880
4881 check_cc <<EOF && enable attribute_packed
4882 struct { int x; } __attribute__((packed)) x;
4883 EOF
4884
4885 check_cc <<EOF && enable attribute_may_alias
4886 union { int x; } __attribute__((may_alias)) x;
4887 EOF
4888
4889 check_cc <<EOF || die "endian test failed"
4890 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4891 EOF
4892 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4893
4894 if ! enabled ppc64 || enabled bigendian; then
4895     disable vsx
4896 fi
4897
4898 check_gas() {
4899     log "check_gas using '$as' as AS"
4900     # :vararg is used on aarch64, arm and ppc altivec
4901     check_as <<EOF || return 1
4902 .macro m n, y:vararg=0
4903 \n: .int \y
4904 .endm
4905 m x
4906 EOF
4907     # .altmacro is only used in arm asm
4908     ! enabled arm || check_as <<EOF || return 1
4909 .altmacro
4910 EOF
4911     enable gnu_as
4912     return 0
4913 }
4914
4915 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4916     nogas=:
4917     enabled_any arm aarch64 && nogas=die
4918     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4919     as_noop=-v
4920
4921     case $as_type in
4922         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4923         gcc)  gaspp_as_type=gas ;;
4924         *)    gaspp_as_type=$as_type ;;
4925     esac
4926
4927     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4928
4929     test "${as#*gas-preprocessor.pl}" != "$as" ||
4930     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4931         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4932
4933     if ! check_gas ; then
4934         as=${gas:=$as}
4935         check_gas || \
4936             $nogas "GNU assembler not found, install/update gas-preprocessor"
4937     fi
4938
4939     check_as <<EOF && enable as_func
4940 .func test
4941 .endfunc
4942 EOF
4943 fi
4944
4945 check_inline_asm inline_asm_labels '"1:\n"'
4946
4947 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4948
4949 if enabled aarch64; then
4950     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4951     # internal assembler in clang 3.3 does not support this instruction
4952     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4953     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4954
4955     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4956
4957 elif enabled alpha; then
4958
4959     check_cflags -mieee
4960
4961 elif enabled arm; then
4962
4963     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4964
4965     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4966 float func(float a, float b){ return a+b; }
4967 EOF
4968
4969     enabled thumb && check_cflags -mthumb || check_cflags -marm
4970
4971     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4972         enable vfp_args
4973     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4974         enable vfp_args
4975     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4976         case "${cross_prefix:-$cc}" in
4977             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4978             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4979 __asm__ (".eabi_attribute 28, 1");
4980 int main(void) { return 0; }
4981 EOF
4982         esac
4983         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4984     fi
4985
4986     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4987     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4988     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4989     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4990     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4991     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4992     enabled setend  && check_insn setend  'setend be'
4993
4994     [ $target_os = linux ] || [ $target_os = android ] ||
4995         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4996             $ARCH_EXT_LIST_ARM
4997
4998     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4999
5000     check_as <<EOF && enable as_dn_directive
5001 ra .dn d0.i16
5002 .unreq ra
5003 EOF
5004
5005     # llvm's integrated assembler supports .object_arch from llvm 3.5
5006     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5007 .object_arch armv4
5008 EOF
5009
5010     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5011
5012 elif enabled mips; then
5013
5014     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5015     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5016     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5017
5018     # Enable minimum ISA based on selected options
5019     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5020         add_cflags "-mips64r2"
5021         add_asflags "-mips64r2"
5022     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5023         add_cflags "-mips64"
5024         add_asflags "-mips64"
5025     elif enabled mipsdsp || enabled mipsdspr2; then
5026         add_cflags "-mips32r2 -mfp32"
5027         add_asflags "-mips32r2 -mfp32"
5028     fi
5029
5030     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5031      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5032     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5033      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5034     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5035      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5036     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5037      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5038
5039     enabled msa && add_asflags "-mmsa"
5040
5041 elif enabled parisc; then
5042
5043     if enabled gcc; then
5044         case $($cc -dumpversion) in
5045             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5046         esac
5047     fi
5048
5049 elif enabled ppc; then
5050
5051     enable local_aligned_8 local_aligned_16 local_aligned_32
5052
5053     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5054     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5055     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5056     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5057
5058     # AltiVec flags: The FSF version of GCC differs from the Apple version
5059     if enabled altivec; then
5060         check_cflags -maltivec -mabi=altivec &&
5061         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5062         check_cflags -faltivec
5063
5064         # check if our compiler supports Motorola AltiVec C API
5065         check_cc <<EOF || disable altivec
5066 $inc_altivec_h
5067 int main(void) {
5068     vector signed int v1 = (vector signed int) { 0 };
5069     vector signed int v2 = (vector signed int) { 1 };
5070     v1 = vec_add(v1, v2);
5071     return 0;
5072 }
5073 EOF
5074
5075         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5076     fi
5077
5078     if enabled vsx; then
5079         check_cflags -mvsx &&
5080         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5081     fi
5082
5083     if enabled power8; then
5084         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5085     fi
5086
5087 elif enabled x86; then
5088
5089     check_builtin rdtsc    intrin.h   "__rdtsc()"
5090     check_builtin mm_empty mmintrin.h "_mm_empty()"
5091
5092     enable local_aligned_8 local_aligned_16 local_aligned_32
5093
5094     # check whether EBP is available on x86
5095     # As 'i' is stored on the stack, this program will crash
5096     # if the base pointer is used to access it because the
5097     # base pointer is cleared in the inline assembly code.
5098     check_exec_crash <<EOF && enable ebp_available
5099 volatile int i=0;
5100 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5101 return i;
5102 EOF
5103
5104     # check whether EBX is available on x86
5105     check_inline_asm ebx_available '""::"b"(0)' &&
5106         check_inline_asm ebx_available '"":::"%ebx"'
5107
5108     # check whether xmm clobbers are supported
5109     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5110
5111     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5112         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5113
5114     # check whether binutils is new enough to compile SSSE3/MMXEXT
5115     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5116     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5117
5118     if ! disabled_any asm mmx yasm; then
5119         if check_cmd $yasmexe --version; then
5120             enabled x86_64 && yasm_extra="-m amd64"
5121             yasm_debug="-g dwarf2"
5122         elif check_cmd nasm -v; then
5123             yasmexe=nasm
5124             yasm_debug="-g -F dwarf"
5125             if enabled x86_64; then
5126                 case "$objformat" in
5127                     elf)   objformat=elf64 ;;
5128                     win32) objformat=win64 ;;
5129                 esac
5130             fi
5131         fi
5132
5133         YASMFLAGS="-f $objformat $yasm_extra"
5134         enabled pic               && append YASMFLAGS "-DPIC"
5135         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5136         case "$objformat" in
5137             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5138         esac
5139
5140         check_yasm "movbe ecx, [5]" && enable yasm ||
5141             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5142         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5143         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5144         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5145         check_yasm "CPU amdnop" || disable cpunop
5146     fi
5147
5148     case "$cpu" in
5149         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5150             disable fast_clz
5151         ;;
5152     esac
5153
5154 fi
5155
5156 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5157
5158 check_ldflags -Wl,--as-needed
5159 check_ldflags -Wl,-z,noexecstack
5160
5161 if check_func dlopen; then
5162     ldl=
5163 elif check_func dlopen -ldl; then
5164     ldl=-ldl
5165 fi
5166
5167 frei0r_filter_extralibs='$ldl'
5168 frei0r_src_filter_extralibs='$ldl'
5169 ladspa_filter_extralibs='$ldl'
5170 nvenc_encoder_extralibs='$ldl'
5171
5172 if ! disabled network; then
5173     check_func getaddrinfo $network_extralibs
5174     check_func inet_aton $network_extralibs
5175
5176     check_type netdb.h "struct addrinfo"
5177     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5178     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5179     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5180     check_type poll.h "struct pollfd"
5181     check_type netinet/sctp.h "struct sctp_event_subscribe"
5182     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5183     check_type netinet/in.h "struct sockaddr_in6"
5184     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5185     check_type "sys/types.h sys/socket.h" socklen_t
5186
5187     # Prefer arpa/inet.h over winsock2
5188     if check_header arpa/inet.h ; then
5189         check_func closesocket
5190     elif check_header winsock2.h ; then
5191         check_func_headers winsock2.h closesocket -lws2 &&
5192             network_extralibs="-lws2" ||
5193         { check_func_headers winsock2.h closesocket -lws2_32 &&
5194             network_extralibs="-lws2_32"; } || disable winsock2_h network
5195         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5196
5197         check_type ws2tcpip.h socklen_t
5198         check_type ws2tcpip.h "struct addrinfo"
5199         check_type ws2tcpip.h "struct group_source_req"
5200         check_type ws2tcpip.h "struct ip_mreq_source"
5201         check_type ws2tcpip.h "struct ipv6_mreq"
5202         check_type winsock2.h "struct pollfd"
5203         check_struct winsock2.h "struct sockaddr" sa_len
5204         check_type ws2tcpip.h "struct sockaddr_in6"
5205         check_type ws2tcpip.h "struct sockaddr_storage"
5206     else
5207         disable network
5208     fi
5209 fi
5210
5211 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5212 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5213 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5214 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5215 check_builtin sarestart signal.h "SA_RESTART"
5216 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5217 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5218 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5219
5220 case "$custom_allocator" in
5221     jemalloc)
5222         # jemalloc by default does not use a prefix
5223         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5224     ;;
5225     tcmalloc)
5226         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5227         malloc_prefix=tc_
5228     ;;
5229 esac
5230
5231 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5232 check_func  ${malloc_prefix}memalign            && enable memalign
5233 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5234
5235 check_func  access
5236 check_func  arc4random
5237 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5238 check_func  fcntl
5239 check_func  fork
5240 check_func  gethrtime
5241 check_func  getopt
5242 check_func  getrusage
5243 check_func  gettimeofday
5244 check_func  isatty
5245 check_func  mach_absolute_time
5246 check_func  mkstemp
5247 check_func  mmap
5248 check_func  mprotect
5249 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5250 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5251 check_func  sched_getaffinity
5252 check_func  setrlimit
5253 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5254 check_func  strerror_r
5255 check_func  sysconf
5256 check_func  sysctl
5257 check_func  usleep
5258
5259 check_func_headers conio.h kbhit
5260 check_func_headers io.h setmode
5261 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5262 check_func_headers stdlib.h getenv
5263 check_func_headers sys/stat.h lstat
5264
5265 check_func_headers windows.h CoTaskMemFree -lole32
5266 check_func_headers windows.h GetProcessAffinityMask
5267 check_func_headers windows.h GetProcessTimes
5268 check_func_headers windows.h GetSystemTimeAsFileTime
5269 check_func_headers windows.h MapViewOfFile
5270 check_func_headers windows.h PeekNamedPipe
5271 check_func_headers windows.h SetConsoleTextAttribute
5272 check_func_headers windows.h SetConsoleCtrlHandler
5273 check_func_headers windows.h Sleep
5274 check_func_headers windows.h VirtualAlloc
5275 check_struct windows.h "CONDITION_VARIABLE" Ptr
5276 check_func_headers glob.h glob
5277 enabled xlib &&
5278     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5279
5280 check_header direct.h
5281 check_header dirent.h
5282 check_header dlfcn.h
5283 check_header d3d11.h
5284 check_header dxva.h
5285 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5286 check_header io.h
5287 check_header libcrystalhd/libcrystalhd_if.h
5288 check_header mach/mach_time.h
5289 check_header malloc.h
5290 check_header net/udplite.h
5291 check_header poll.h
5292 check_header sys/mman.h
5293 check_header sys/param.h
5294 check_header sys/resource.h
5295 check_header sys/select.h
5296 check_header sys/time.h
5297 check_header sys/un.h
5298 check_header termios.h
5299 check_header unistd.h
5300 check_header valgrind/valgrind.h
5301 check_header vdpau/vdpau.h
5302 check_header vdpau/vdpau_x11.h
5303 check_header VideoDecodeAcceleration/VDADecoder.h
5304 check_header VideoToolbox/VideoToolbox.h
5305 check_header windows.h
5306 check_header X11/extensions/XvMClib.h
5307 check_header asm/types.h
5308
5309 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5310 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5311 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5312 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5313
5314 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5315
5316 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5317 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5318 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5319 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5320 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5321
5322 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5323
5324 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5325
5326 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5327
5328 if ! disabled w32threads && ! enabled pthreads; then
5329     check_func_headers "windows.h process.h" _beginthreadex &&
5330         enable w32threads || disable w32threads
5331     if ! enabled w32threads && enabled winrt; then
5332         check_func_headers "windows.h" CreateThread &&
5333             enable w32threads || disable w32threads
5334     fi
5335 fi
5336
5337 # check for some common methods of building with pthread support
5338 # do this before the optional library checks as some of them require pthreads
5339 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5340     enable pthreads
5341     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5342         add_cflags -pthread
5343         add_extralibs -pthread
5344     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5345         add_cflags -pthreads
5346         add_extralibs -pthreads
5347     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5348         add_cflags -ldl -pthread
5349         add_extralibs -ldl -pthread
5350     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5351         add_extralibs -lpthreadGC2
5352     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5353         :
5354     elif ! check_func pthread_join && ! check_func pthread_create; then
5355         disable pthreads
5356     fi
5357     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5358 fi
5359
5360
5361 if enabled pthreads; then
5362   check_func pthread_cancel
5363 fi
5364
5365 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5366 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5367 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5368
5369 check_lib math.h sin -lm && LIBM="-lm"
5370 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5371
5372 atan2f_args=2
5373 copysign_args=2
5374 hypot_args=2
5375 ldexpf_args=2
5376 powf_args=2
5377
5378 for func in $MATH_FUNCS; do
5379     eval check_mathfunc $func \${${func}_args:-1}
5380 done
5381
5382 for func in $COMPLEX_FUNCS; do
5383     eval check_complexfunc $func \${${func}_args:-1}
5384 done
5385
5386 # these are off by default, so fail if requested and not available
5387 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5388 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5389                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5390 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5391                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5392                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5393 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5394 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5395 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5396 enabled gcrypt            && require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5397 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5398 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5399 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5400 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5401 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5402 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5403 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5404 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5405 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5406                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5407                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5408 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5409 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5410 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5411 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5412                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5413                                  warn "using libfdk without pkg-config"; } }
5414 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"
5415 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5416 enabled fontconfig        && enable libfontconfig
5417 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5418 enabled libfreetype       && require_libfreetype
5419 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5420 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5421 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5422                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5423                                done || die "ERROR: libgsm not found"; }
5424 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5425 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.7.1" kvazaar.h kvz_api_get
5426 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5427 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5428 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5429 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5430 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5431 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5432 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5433 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5434 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5435                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5436                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5437                                die "ERROR: libopenjpeg not found"; }
5438 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5439 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5440 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5441 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5442 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5443 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5444 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5445 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5446                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5447 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5448 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5449 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5450 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5451 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5452     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5453     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5454 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5455 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5456 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5457                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5458                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5459 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5460 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5461 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5462 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5463 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5464 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5465
5466 enabled libvpx            && {
5467     enabled libvpx_vp8_decoder && {
5468         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5469             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5470                 die "ERROR: libvpx decoder version must be >=0.9.1";
5471     }
5472     enabled libvpx_vp8_encoder && {
5473         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5474             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5475                 die "ERROR: libvpx encoder version must be >=0.9.7";
5476     }
5477     enabled libvpx_vp9_decoder && {
5478         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5479             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5480                 disable libvpx_vp9_decoder;
5481     }
5482     enabled libvpx_vp9_encoder && {
5483         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5484             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5485                 disable libvpx_vp9_encoder;
5486     }
5487     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5488         die "libvpx enabled but no supported decoders found"
5489     fi
5490 }
5491
5492 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5493 enabled libwebp           && {
5494     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5495     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5496 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5497                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5498                                  warn "using libx264 without pkg-config"; } } &&
5499                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5500                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5501                              { check_cpp_condition x264.h "X264_MPEG2" &&
5502                                enable libx262; }
5503 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5504                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5505                                die "ERROR: libx265 version must be >= 57."; }
5506 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5507 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5508 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5509 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5510 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5511 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5512                                 { ! enabled cross_compile && {
5513                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5514                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5515                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5516                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5517                                die "ERROR: mmal not found"; }
5518 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5519 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5520                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5521                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5522                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5523 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5524                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5525                                die "ERROR: openal not found"; } &&
5526                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5527                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5528 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5529                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5530                                die "ERROR: opencl not found"; } &&
5531                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5532                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5533                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5534 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5535                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5536                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5537                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5538                                die "ERROR: opengl not found."
5539                              }
5540 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5541                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5542                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5543                                die "ERROR: openssl not found"; }
5544 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5545
5546 # libdc1394 check
5547 if enabled libdc1394; then
5548     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5549         enable libdc1394_2; } ||
5550     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5551         enable libdc1394_1; } ||
5552     die "ERROR: No version of libdc1394 found "
5553 fi
5554 if ! disabled sdl; then
5555     SDL_CONFIG="${cross_prefix}sdl-config"
5556     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5557         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5558         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5559         enable sdl
5560     else
5561         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5562             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5563             sdl_libs=$("${SDL_CONFIG}" --libs)
5564             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5565             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5566             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5567             enable sdl
5568         elif enabled sdl ; then
5569             die "ERROR: SDL not found"
5570         else
5571             disable sdl
5572         fi
5573     fi
5574     if test $target_os = "mingw32"; then
5575         sdl_libs="$sdl_libs -mconsole"
5576     fi
5577 fi
5578 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5579
5580 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5581     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5582     enable securetransport; }
5583
5584 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5585                        enable schannel && add_extralibs -lSecur32; }
5586
5587 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5588 enabled makeinfo \
5589     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5590     && enable makeinfo_html || disable makeinfo_html
5591 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5592 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5593 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5594 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5595
5596 check_header linux/fb.h
5597 check_header linux/videodev.h
5598 check_header linux/videodev2.h
5599 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5600
5601 check_header sys/videoio.h
5602 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5603
5604 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5605 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5606 # w32api 3.12 had it defined wrong
5607 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5608
5609 check_type "dshow.h" IBaseFilter
5610
5611 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5612 { check_header dev/bktr/ioctl_meteor.h &&
5613   check_header dev/bktr/ioctl_bt848.h; } ||
5614 { check_header machine/ioctl_meteor.h &&
5615   check_header machine/ioctl_bt848.h; } ||
5616 { check_header dev/video/meteor/ioctl_meteor.h &&
5617   check_header dev/video/bktr/ioctl_bt848.h; } ||
5618 check_header dev/ic/bt8xx.h
5619
5620 check_header sndio.h
5621 if check_struct sys/soundcard.h audio_buf_info bytes; then
5622     enable_safe sys/soundcard.h
5623 else
5624     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5625     #include <sys/soundcard.h>
5626     audio_buf_info abc;
5627 EOF
5628 fi
5629 check_header soundcard.h
5630
5631 enabled_any alsa_indev alsa_outdev &&
5632     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5633
5634 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5635     check_func jack_port_get_latency_range -ljack
5636
5637 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5638
5639 if enabled libcdio; then
5640     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5641     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5642     die "ERROR: No usable libcdio/cdparanoia found"
5643 fi
5644
5645 enabled xlib &&
5646     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5647
5648 if ! disabled libxcb; then
5649     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5650         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5651     } && disable x11grab && enable libxcb
5652
5653 if enabled libxcb; then
5654     disabled libxcb_shm || {
5655         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5656             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5657         } && check_header sys/shm.h && enable libxcb_shm; }
5658
5659     disabled libxcb_xfixes || {
5660         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5661             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5662         } && enable libxcb_xfixes; }
5663
5664     disabled libxcb_shape || {
5665         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5666             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5667         } && enable libxcb_shape; }
5668
5669     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5670     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5671 fi
5672 fi
5673
5674 if enabled x11grab; then
5675     enabled xlib || die "ERROR: Xlib not found"
5676     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5677     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5678 fi
5679
5680 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5681
5682 enabled dxva2api_h &&
5683     check_cc <<EOF && enable dxva2api_cobj
5684 #define _WIN32_WINNT 0x0600
5685 #define COBJMACROS
5686 #include <windows.h>
5687 #include <d3d9.h>
5688 #include <dxva2api.h>
5689 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5690 EOF
5691
5692 enabled vaapi &&
5693     check_lib va/va.h vaInitialize -lva ||
5694     disable vaapi
5695
5696 enabled vaapi && enabled xlib &&
5697     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5698     enable vaapi_x11
5699
5700 enabled vdpau &&
5701     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5702     disable vdpau
5703
5704 enabled vdpau && enabled xlib &&
5705     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5706     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5707     enable vdpau_x11
5708
5709 # Funny iconv installations are not unusual, so check it after all flags have been set
5710 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5711
5712 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5713
5714 # add some useful compiler flags if supported
5715 check_cflags -Wdeclaration-after-statement
5716 check_cflags -Wall
5717 check_cflags -Wdisabled-optimization
5718 check_cflags -Wpointer-arith
5719 check_cflags -Wredundant-decls
5720 check_cflags -Wwrite-strings
5721 check_cflags -Wtype-limits
5722 check_cflags -Wundef
5723 check_cflags -Wmissing-prototypes
5724 check_cflags -Wno-pointer-to-int-cast
5725 check_cflags -Wstrict-prototypes
5726 check_cflags -Wempty-body
5727 enabled extra_warnings && check_cflags -Winline
5728 enabled extra_warnings && check_cflags -Wcast-qual
5729
5730 check_disable_warning(){
5731     warning_flag=-W${1#-Wno-}
5732     test_cflags $warning_flag && add_cflags $1
5733 }
5734
5735 check_disable_warning -Wno-parentheses
5736 check_disable_warning -Wno-switch
5737 check_disable_warning -Wno-format-zero-length
5738 check_disable_warning -Wno-pointer-sign
5739
5740 # add some linker flags
5741 check_ldflags -Wl,--warn-common
5742 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5743 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5744 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5745 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5746
5747 # add some strip flags
5748 # -wN '..@*' is more selective than -x, but not available everywhere.
5749 check_stripflags -wN \'..@*\' || check_stripflags -x
5750
5751 enabled neon_clobber_test &&
5752     check_ldflags -Wl,--wrap,avcodec_open2              \
5753                   -Wl,--wrap,avcodec_decode_audio4      \
5754                   -Wl,--wrap,avcodec_decode_video2      \
5755                   -Wl,--wrap,avcodec_decode_subtitle2   \
5756                   -Wl,--wrap,avcodec_encode_audio2      \
5757                   -Wl,--wrap,avcodec_encode_video2      \
5758                   -Wl,--wrap,avcodec_encode_subtitle    \
5759                   -Wl,--wrap,swr_convert                \
5760                   -Wl,--wrap,avresample_convert ||
5761     disable neon_clobber_test
5762
5763 enabled xmm_clobber_test &&
5764     check_ldflags -Wl,--wrap,avcodec_open2              \
5765                   -Wl,--wrap,avcodec_decode_audio4      \
5766                   -Wl,--wrap,avcodec_decode_video2      \
5767                   -Wl,--wrap,avcodec_decode_subtitle2   \
5768                   -Wl,--wrap,avcodec_encode_audio2      \
5769                   -Wl,--wrap,avcodec_encode_video2      \
5770                   -Wl,--wrap,avcodec_encode_subtitle    \
5771                   -Wl,--wrap,swr_convert                \
5772                   -Wl,--wrap,avresample_convert         \
5773                   -Wl,--wrap,sws_scale ||
5774     disable xmm_clobber_test
5775
5776 echo "X { local: *; };" > $TMPV
5777 if test_ldflags -Wl,--version-script,$TMPV; then
5778     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5779 elif test_ldflags -Wl,-M,$TMPV; then
5780     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5781 fi
5782
5783 check_cc <<EOF && enable symver_asm_label
5784 void ff_foo(void) __asm__ ("av_foo@VERSION");
5785 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5786 EOF
5787     check_cc <<EOF && enable symver_gnu_asm
5788 __asm__(".symver ff_foo,av_foo@VERSION");
5789 void ff_foo(void) {}
5790 EOF
5791
5792 if [ -z "$optflags" ]; then
5793     if enabled small; then
5794         optflags=$cflags_size
5795     elif enabled optimizations; then
5796         optflags=$cflags_speed
5797     else
5798         optflags=$cflags_noopt
5799     fi
5800 fi
5801
5802 check_optflags(){
5803     check_cflags "$@"
5804     enabled lto && check_ldflags "$@"
5805 }
5806
5807
5808 if enabled lto; then
5809     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5810     check_cflags  -flto
5811     check_ldflags -flto $cpuflags
5812     disable inline_asm_direct_symbol_refs
5813 fi
5814
5815 check_optflags $optflags
5816 check_optflags -fno-math-errno
5817 check_optflags -fno-signed-zeros
5818
5819 enabled ftrapv && check_cflags -ftrapv
5820
5821 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5822 int x;
5823 EOF
5824
5825
5826 if enabled icc; then
5827     # Just warnings, no remarks
5828     check_cflags -w1
5829     # -wd: Disable following warnings
5830     # 144, 167, 556: -Wno-pointer-sign
5831     # 188: enumerated type mixed with another type
5832     # 1292: attribute "foo" ignored
5833     # 1419: external declaration in primary source file
5834     # 10006: ignoring unknown option -fno-signed-zeros
5835     # 10148: ignoring unknown option -Wno-parentheses
5836     # 10156: ignoring option '-W'; no argument required
5837     # 13200: No EMMS instruction before call to function
5838     # 13203: No EMMS instruction before return from function
5839     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5840     # 11030: Warning unknown option --as-needed
5841     # 10156: ignoring option '-export'; no argument required
5842     check_ldflags -wd10156,11030
5843     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5844     enable ebp_available
5845     # The test above does not test linking
5846     enabled lto && disable symver_asm_label
5847     if enabled x86_32; then
5848         icc_version=$($cc -dumpversion)
5849         test ${icc_version%%.*} -ge 11 &&
5850             check_cflags -falign-stack=maintain-16-byte ||
5851             disable aligned_stack
5852     fi
5853 elif enabled ccc; then
5854     # disable some annoying warnings
5855     add_cflags -msg_disable bitnotint
5856     add_cflags -msg_disable mixfuncvoid
5857     add_cflags -msg_disable nonstandcast
5858     add_cflags -msg_disable unsupieee
5859 elif enabled gcc; then
5860     check_optflags -fno-tree-vectorize
5861     check_cflags -Werror=format-security
5862     check_cflags -Werror=implicit-function-declaration
5863     check_cflags -Werror=missing-prototypes
5864     check_cflags -Werror=return-type
5865     check_cflags -Werror=vla
5866     check_cflags -Wformat
5867     check_cflags -fdiagnostics-color=auto
5868     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5869 elif enabled llvm_gcc; then
5870     check_cflags -mllvm -stack-alignment=16
5871 elif enabled clang; then
5872     check_cflags -mllvm -stack-alignment=16
5873     check_cflags -Qunused-arguments
5874     check_cflags -Werror=implicit-function-declaration
5875     check_cflags -Werror=missing-prototypes
5876     check_cflags -Werror=return-type
5877 elif enabled cparser; then
5878     add_cflags -Wno-missing-variable-declarations
5879     add_cflags -Wno-empty-statement
5880 elif enabled armcc; then
5881     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5882     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5883     # 2523: use of inline assembly is deprecated
5884     add_cflags -W${armcc_opt},--diag_suppress=2523
5885     add_cflags -W${armcc_opt},--diag_suppress=1207
5886     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5887     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5888     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5889     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5890 elif enabled tms470; then
5891     add_cflags -pds=824 -pds=837
5892     disable inline_asm
5893 elif enabled pathscale; then
5894     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5895 elif enabled_any msvc icl; then
5896     enabled x86_32 && disable aligned_stack
5897     enabled_all x86_32 debug && add_cflags -Oy-
5898     enabled debug && add_ldflags -debug
5899     enable pragma_deprecated
5900     if enabled icl; then
5901         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5902         # (correctly) on icl 13.x.
5903         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5904             add_cflags -Qansi-alias
5905         # Some inline asm is not compilable in debug
5906         if enabled debug; then
5907             disable ebp_available
5908             disable ebx_available
5909         fi
5910     fi
5911     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5912     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5913     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5914     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5915     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5916     # MSVC 2013 and newer can handle it fine.
5917     # If this declspec fails, force including stdlib.h before the restrict redefinition
5918     # happens in config.h.
5919     if [ $_restrict != restrict ]; then
5920         check_cc <<EOF || add_cflags -FIstdlib.h
5921 __declspec($_restrict) void* foo(int);
5922 EOF
5923     fi
5924     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5925 fi
5926
5927 for pfx in "" host_; do
5928     varname=${pfx%_}cc_type
5929     eval "type=\$$varname"
5930     if [ $type = "msvc" ]; then
5931         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5932 static inline int foo(int a) { return a; }
5933 EOF
5934     fi
5935 done
5936
5937 case $as_type in
5938     clang)
5939         add_asflags -Qunused-arguments
5940     ;;
5941 esac
5942
5943 case $ld_type in
5944     clang)
5945         check_ldflags -Qunused-arguments
5946     ;;
5947 esac
5948
5949 case $target_os in
5950     osf1)
5951         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5952     ;;
5953     plan9)
5954         add_cppflags -Dmain=plan9_main
5955     ;;
5956 esac
5957
5958 enable frame_thread_encoder
5959
5960 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5961
5962 check_deps $CONFIG_LIST       \
5963            $CONFIG_EXTRA      \
5964            $HAVE_LIST         \
5965            $ALL_COMPONENTS    \
5966
5967 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"
5968
5969
5970 if test $target_os = "haiku"; then
5971     disable memalign
5972     disable posix_memalign
5973 fi
5974
5975 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5976     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5977     enable dxva2_lib
5978
5979 ! enabled_any memalign posix_memalign aligned_malloc &&
5980     enabled simd_align_16 && enable memalign_hack
5981
5982 # add_dep lib dep
5983 # -> enable ${lib}_deps_${dep}
5984 # -> add $dep to ${lib}_deps only once
5985 add_dep() {
5986     lib=$1
5987     dep=$2
5988     enabled "${lib}_deps_${dep}" && return 0
5989     enable  "${lib}_deps_${dep}"
5990     prepend "${lib}_deps" $dep
5991 }
5992
5993 # merge deps lib components
5994 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5995 merge_deps() {
5996     lib=$1
5997     shift
5998     for comp in $*; do
5999         enabled $comp || continue
6000         eval "dep=\"\$${comp}_deps\""
6001         for d in $dep; do
6002             add_dep $lib $d
6003         done
6004     done
6005 }
6006
6007 merge_deps libavfilter $FILTER_LIST
6008
6009 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6010
6011 for thread in $THREADS_LIST; do
6012     if enabled $thread; then
6013         test -n "$thread_type" &&
6014             die "ERROR: Only one thread type must be selected." ||
6015             thread_type="$thread"
6016     fi
6017 done
6018
6019 enabled zlib && add_cppflags -DZLIB_CONST
6020
6021 # conditional library dependencies, in linking order
6022 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6023 enabled aresample_filter    && prepend avfilter_deps "swresample"
6024 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6025 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6026 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6027 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6028 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6029 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6030 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6031 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6032 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6033 enabled pan_filter          && prepend avfilter_deps "swresample"
6034 enabled pp_filter           && prepend avfilter_deps "postproc"
6035 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6036 enabled resample_filter && prepend avfilter_deps "avresample"
6037 enabled sab_filter          && prepend avfilter_deps "swscale"
6038 enabled scale_filter    && prepend avfilter_deps "swscale"
6039 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6040 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6041 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6042 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6043 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6044 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6045 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6046
6047 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6048
6049 enabled opus_decoder    && prepend avcodec_deps "swresample"
6050
6051 expand_deps(){
6052     lib_deps=${1}_deps
6053     eval "deps=\$$lib_deps"
6054     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6055     unique $lib_deps
6056 }
6057
6058 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6059 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6060
6061 map 'expand_deps $v' $LIBRARY_LIST
6062
6063 echo "install prefix            $prefix"
6064 echo "source path               $source_path"
6065 echo "C compiler                $cc"
6066 echo "C library                 $libc_type"
6067 if test "$host_cc" != "$cc"; then
6068     echo "host C compiler           $host_cc"
6069     echo "host C library            $host_libc_type"
6070 fi
6071 echo "ARCH                      $arch ($cpu)"
6072 if test "$build_suffix" != ""; then
6073     echo "build suffix              $build_suffix"
6074 fi
6075 if test "$progs_suffix" != ""; then
6076     echo "progs suffix              $progs_suffix"
6077 fi
6078 if test "$extra_version" != ""; then
6079     echo "version string suffix     $extra_version"
6080 fi
6081 echo "big-endian                ${bigendian-no}"
6082 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6083 if enabled x86; then
6084     echo "${yasmexe}                      ${yasm-no}"
6085     echo "MMX enabled               ${mmx-no}"
6086     echo "MMXEXT enabled            ${mmxext-no}"
6087     echo "3DNow! enabled            ${amd3dnow-no}"
6088     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6089     echo "SSE enabled               ${sse-no}"
6090     echo "SSSE3 enabled             ${ssse3-no}"
6091     echo "AESNI enabled             ${aesni-no}"
6092     echo "AVX enabled               ${avx-no}"
6093     echo "XOP enabled               ${xop-no}"
6094     echo "FMA3 enabled              ${fma3-no}"
6095     echo "FMA4 enabled              ${fma4-no}"
6096     echo "i686 features enabled     ${i686-no}"
6097     echo "CMOV is fast              ${fast_cmov-no}"
6098     echo "EBX available             ${ebx_available-no}"
6099     echo "EBP available             ${ebp_available-no}"
6100 fi
6101 if enabled aarch64; then
6102     echo "NEON enabled              ${neon-no}"
6103     echo "VFP enabled               ${vfp-no}"
6104 fi
6105 if enabled arm; then
6106     echo "ARMv5TE enabled           ${armv5te-no}"
6107     echo "ARMv6 enabled             ${armv6-no}"
6108     echo "ARMv6T2 enabled           ${armv6t2-no}"
6109     echo "VFP enabled               ${vfp-no}"
6110     echo "NEON enabled              ${neon-no}"
6111     echo "THUMB enabled             ${thumb-no}"
6112 fi
6113 if enabled mips; then
6114     echo "MIPS FPU enabled          ${mipsfpu-no}"
6115     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6116     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6117     echo "MIPS MSA enabled          ${msa-no}"
6118     echo "LOONGSON MMI enabled      ${mmi-no}"
6119 fi
6120 if enabled ppc; then
6121     echo "AltiVec enabled           ${altivec-no}"
6122     echo "VSX enabled               ${vsx-no}"
6123     echo "POWER8 enabled            ${power8-no}"
6124     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6125     echo "dcbzl available           ${dcbzl-no}"
6126 fi
6127 echo "debug symbols             ${debug-no}"
6128 echo "strip symbols             ${stripping-no}"
6129 echo "optimize for size         ${small-no}"
6130 echo "optimizations             ${optimizations-no}"
6131 echo "static                    ${static-no}"
6132 echo "shared                    ${shared-no}"
6133 echo "postprocessing support    ${postproc-no}"
6134 echo "new filter support        ${avfilter-no}"
6135 echo "network support           ${network-no}"
6136 echo "threading support         ${thread_type-no}"
6137 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6138 echo "SDL support               ${sdl-no}"
6139 echo "opencl enabled            ${opencl-no}"
6140 echo "texi2html enabled         ${texi2html-no}"
6141 echo "perl enabled              ${perl-no}"
6142 echo "pod2man enabled           ${pod2man-no}"
6143 echo "makeinfo enabled          ${makeinfo-no}"
6144 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6145 test -n "$random_seed" &&
6146     echo "random seed               ${random_seed}"
6147 echo
6148
6149 echo "Enabled programs:"
6150 print_enabled '' $PROGRAM_LIST | print_in_columns
6151 echo
6152
6153 echo "External libraries:"
6154 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6155 echo
6156
6157 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6158     echo "Enabled ${type}s:"
6159     eval list=\$$(toupper $type)_LIST
6160     print_enabled '_*' $list | print_in_columns
6161     echo
6162 done
6163
6164 license="LGPL version 2.1 or later"
6165 if enabled nonfree; then
6166     license="nonfree and unredistributable"
6167 elif enabled gplv3; then
6168     license="GPL version 3 or later"
6169 elif enabled lgplv3; then
6170     license="LGPL version 3 or later"
6171 elif enabled gpl; then
6172     license="GPL version 2 or later"
6173 fi
6174
6175 echo "License: $license"
6176
6177 echo "Creating config.mak, config.h, and doc/config.texi..."
6178
6179 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6180
6181 enabled stripping || strip="echo skipping strip"
6182
6183 config_files="$TMPH config.mak doc/config.texi"
6184
6185 cat > config.mak <<EOF
6186 # Automatically generated by configure - do not modify!
6187 ifndef FFMPEG_CONFIG_MAK
6188 FFMPEG_CONFIG_MAK=1
6189 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6190 prefix=$prefix
6191 LIBDIR=\$(DESTDIR)$libdir
6192 SHLIBDIR=\$(DESTDIR)$shlibdir
6193 INCDIR=\$(DESTDIR)$incdir
6194 BINDIR=\$(DESTDIR)$bindir
6195 DATADIR=\$(DESTDIR)$datadir
6196 DOCDIR=\$(DESTDIR)$docdir
6197 MANDIR=\$(DESTDIR)$mandir
6198 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6199 SRC_PATH=$source_path
6200 ifndef MAIN_MAKEFILE
6201 SRC_PATH:=\$(SRC_PATH:.%=..%)
6202 endif
6203 CC_IDENT=$cc_ident
6204 ARCH=$arch
6205 INTRINSICS=$intrinsics
6206 CC=$cc
6207 CXX=$cxx
6208 AS=$as
6209 OBJCC=$objcc
6210 LD=$ld
6211 DEPCC=$dep_cc
6212 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6213 DEPAS=$as
6214 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6215 YASM=$yasmexe
6216 DEPYASM=$yasmexe
6217 AR=$ar
6218 ARFLAGS=$arflags
6219 AR_O=$ar_o
6220 RANLIB=$ranlib
6221 STRIP=$strip
6222 CP=cp -p
6223 LN_S=$ln_s
6224 CPPFLAGS=$CPPFLAGS
6225 CFLAGS=$CFLAGS
6226 CXXFLAGS=$CXXFLAGS
6227 OBJCFLAGS=$OBJCFLAGS
6228 ASFLAGS=$ASFLAGS
6229 AS_C=$AS_C
6230 AS_O=$AS_O
6231 OBJCC_C=$OBJCC_C
6232 OBJCC_E=$OBJCC_E
6233 OBJCC_O=$OBJCC_O
6234 CC_C=$CC_C
6235 CC_E=$CC_E
6236 CC_O=$CC_O
6237 CXX_C=$CXX_C
6238 CXX_O=$CXX_O
6239 LD_O=$LD_O
6240 LD_LIB=$LD_LIB
6241 LD_PATH=$LD_PATH
6242 DLLTOOL=$dlltool
6243 WINDRES=$windres
6244 DEPWINDRES=$dep_cc
6245 DOXYGEN=$doxygen
6246 LDFLAGS=$LDFLAGS
6247 LDEXEFLAGS=$LDEXEFLAGS
6248 LDLIBFLAGS=$LDLIBFLAGS
6249 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6250 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6251 YASMFLAGS=$YASMFLAGS
6252 BUILDSUF=$build_suffix
6253 PROGSSUF=$progs_suffix
6254 FULLNAME=$FULLNAME
6255 LIBPREF=$LIBPREF
6256 LIBSUF=$LIBSUF
6257 LIBNAME=$LIBNAME
6258 SLIBPREF=$SLIBPREF
6259 SLIBSUF=$SLIBSUF
6260 EXESUF=$EXESUF
6261 EXTRA_VERSION=$extra_version
6262 CCDEP=$CCDEP
6263 CXXDEP=$CXXDEP
6264 CCDEP_FLAGS=$CCDEP_FLAGS
6265 ASDEP=$ASDEP
6266 ASDEP_FLAGS=$ASDEP_FLAGS
6267 CC_DEPFLAGS=$CC_DEPFLAGS
6268 AS_DEPFLAGS=$AS_DEPFLAGS
6269 HOSTCC=$host_cc
6270 HOSTLD=$host_ld
6271 HOSTCFLAGS=$host_cflags
6272 HOSTCPPFLAGS=$host_cppflags
6273 HOSTEXESUF=$HOSTEXESUF
6274 HOSTLDFLAGS=$host_ldflags
6275 HOSTLIBS=$host_libs
6276 DEPHOSTCC=$host_cc
6277 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6278 HOSTCCDEP=$HOSTCCDEP
6279 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6280 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6281 HOSTCC_C=$HOSTCC_C
6282 HOSTCC_O=$HOSTCC_O
6283 HOSTLD_O=$HOSTLD_O
6284 TARGET_EXEC=$target_exec $target_exec_args
6285 TARGET_PATH=$target_path
6286 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6287 CFLAGS-ffplay=$sdl_cflags
6288 ZLIB=$($ldflags_filter -lz)
6289 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6290 EXTRALIBS=$extralibs
6291 COMPAT_OBJS=$compat_objs
6292 EXEOBJS=$exeobjs
6293 INSTALL=$install
6294 LIBTARGET=${LIBTARGET}
6295 SLIBNAME=${SLIBNAME}
6296 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6297 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6298 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6299 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6300 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6301 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6302 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6303 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6304 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6305 NOREDZONE_FLAGS=$noredzone_flags
6306 EOF
6307
6308 get_version(){
6309     lcname=lib${1}
6310     name=$(toupper $lcname)
6311     file=$source_path/$lcname/version.h
6312     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6313     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6314     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6315     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6316     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6317     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6318 }
6319
6320 map 'get_version $v' $LIBRARY_LIST
6321
6322 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6323
6324 print_program_libs(){
6325     eval "program_libs=\$${1}_libs"
6326     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6327 }
6328
6329 map 'print_program_libs $v' $PROGRAM_LIST
6330
6331 cat > $TMPH <<EOF
6332 /* Automatically generated by configure - do not modify! */
6333 #ifndef FFMPEG_CONFIG_H
6334 #define FFMPEG_CONFIG_H
6335 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6336 #define FFMPEG_LICENSE "$(c_escape $license)"
6337 #define CONFIG_THIS_YEAR 2015
6338 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6339 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6340 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6341 #define av_restrict $_restrict
6342 #define EXTERN_PREFIX "${extern_prefix}"
6343 #define EXTERN_ASM ${extern_prefix}
6344 #define BUILDSUF "$build_suffix"
6345 #define SLIBSUF "$SLIBSUF"
6346 #define HAVE_MMX2 HAVE_MMXEXT
6347 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6348 EOF
6349
6350 test -n "$assert_level" &&
6351     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6352
6353 test -n "$malloc_prefix" &&
6354     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6355
6356 if enabled yasm; then
6357     append config_files $TMPASM
6358     printf '' >$TMPASM
6359 fi
6360
6361 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6362
6363
6364 mkdir -p doc
6365 mkdir -p tests
6366 mkdir -p tests/api
6367 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6368
6369 print_config ARCH_   "$config_files" $ARCH_LIST
6370 print_config HAVE_   "$config_files" $HAVE_LIST
6371 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6372                                      $CONFIG_EXTRA      \
6373                                      $ALL_COMPONENTS    \
6374
6375 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6376 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6377
6378 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6379 cp_if_changed $TMPH config.h
6380 touch .config
6381
6382 enabled yasm && cp_if_changed $TMPASM config.asm
6383
6384 cat > $TMPH <<EOF
6385 /* Generated by ffconf */
6386 #ifndef AVUTIL_AVCONFIG_H
6387 #define AVUTIL_AVCONFIG_H
6388 EOF
6389
6390 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6391
6392 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6393
6394 cp_if_changed $TMPH libavutil/avconfig.h
6395
6396 if test -n "$WARNINGS"; then
6397     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6398     enabled fatal_warnings && exit 1
6399 fi
6400
6401 # build pkg-config files
6402
6403 lib_version(){
6404     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6405 }
6406
6407 pkgconfig_generate(){
6408     name=$1
6409     shortname=${name#lib}${build_suffix}
6410     comment=$2
6411     version=$3
6412     libs=$4
6413     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6414     requires=${requires%, }
6415     enabled ${name#lib} || return 0
6416     mkdir -p $name
6417     cat <<EOF > $name/$name${build_suffix}.pc
6418 prefix=$prefix
6419 exec_prefix=\${prefix}
6420 libdir=$libdir
6421 includedir=$incdir
6422
6423 Name: $name
6424 Description: $comment
6425 Version: $version
6426 Requires: $(enabled shared || echo $requires)
6427 Requires.private: $(enabled shared && echo $requires)
6428 Conflicts:
6429 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6430 Libs.private: $(enabled shared && echo $libs)
6431 Cflags: -I\${includedir}
6432 EOF
6433
6434 mkdir -p doc/examples/pc-uninstalled
6435 includedir=${source_path}
6436 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6437     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6438 prefix=
6439 exec_prefix=
6440 libdir=\${pcfiledir}/../../../$name
6441 includedir=${includedir}
6442
6443 Name: $name
6444 Description: $comment
6445 Version: $version
6446 Requires: $requires
6447 Conflicts:
6448 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6449 Cflags: -I\${includedir}
6450 EOF
6451 }
6452
6453 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6454 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6455 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6456 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6457 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6458 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6459 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6460 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6461 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"