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 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2581 vp9_vaapi_hwaccel_select="vp9_decoder"
2582 wmv3_crystalhd_decoder_select="crystalhd"
2583 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2584 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2585 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2586 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2587 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2588
2589 # parsers
2590 h264_parser_select="h264_decoder"
2591 hevc_parser_select="golomb"
2592 mpegvideo_parser_select="mpegvideo"
2593 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2594 vc1_parser_select="mpegvideo startcode vc1_decoder"
2595
2596 # bitstream_filters
2597 mjpeg2jpeg_bsf_select="jpegtables"
2598
2599 # external libraries
2600 chromaprint_muxer_deps="chromaprint"
2601 libaacplus_encoder_deps="libaacplus"
2602 libcelt_decoder_deps="libcelt"
2603 libdcadec_decoder_deps="libdcadec"
2604 libfaac_encoder_deps="libfaac"
2605 libfaac_encoder_select="audio_frame_queue"
2606 libfdk_aac_decoder_deps="libfdk_aac"
2607 libfdk_aac_encoder_deps="libfdk_aac"
2608 libfdk_aac_encoder_select="audio_frame_queue"
2609 libgme_demuxer_deps="libgme"
2610 libgsm_decoder_deps="libgsm"
2611 libgsm_encoder_deps="libgsm"
2612 libgsm_ms_decoder_deps="libgsm"
2613 libgsm_ms_encoder_deps="libgsm"
2614 libilbc_decoder_deps="libilbc"
2615 libilbc_encoder_deps="libilbc"
2616 libkvazaar_encoder_deps="libkvazaar"
2617 libmodplug_demuxer_deps="libmodplug"
2618 libmp3lame_encoder_deps="libmp3lame"
2619 libmp3lame_encoder_select="audio_frame_queue"
2620 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2621 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2622 libopencore_amrnb_encoder_select="audio_frame_queue"
2623 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2624 libopenh264_encoder_deps="libopenh264"
2625 libopenjpeg_decoder_deps="libopenjpeg"
2626 libopenjpeg_encoder_deps="libopenjpeg"
2627 libopus_decoder_deps="libopus"
2628 libopus_encoder_deps="libopus"
2629 libopus_encoder_select="audio_frame_queue"
2630 libquvi_demuxer_deps="libquvi"
2631 libschroedinger_decoder_deps="libschroedinger"
2632 libschroedinger_encoder_deps="libschroedinger"
2633 libshine_encoder_deps="libshine"
2634 libshine_encoder_select="audio_frame_queue"
2635 libspeex_decoder_deps="libspeex"
2636 libspeex_encoder_deps="libspeex"
2637 libspeex_encoder_select="audio_frame_queue"
2638 libstagefright_h264_decoder_deps="libstagefright_h264"
2639 libtheora_encoder_deps="libtheora"
2640 libtwolame_encoder_deps="libtwolame"
2641 libvo_aacenc_encoder_deps="libvo_aacenc"
2642 libvo_aacenc_encoder_select="audio_frame_queue"
2643 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2644 libvorbis_decoder_deps="libvorbis"
2645 libvorbis_encoder_deps="libvorbis"
2646 libvorbis_encoder_select="audio_frame_queue"
2647 libvpx_vp8_decoder_deps="libvpx"
2648 libvpx_vp8_encoder_deps="libvpx"
2649 libvpx_vp9_decoder_deps="libvpx"
2650 libvpx_vp9_encoder_deps="libvpx"
2651 libwavpack_encoder_deps="libwavpack"
2652 libwebp_encoder_deps="libwebp"
2653 libwebp_anim_encoder_deps="libwebp"
2654 libx262_encoder_deps="libx262"
2655 libx264_encoder_deps="libx264"
2656 libx264rgb_encoder_deps="libx264"
2657 libx264rgb_encoder_select="libx264_encoder"
2658 libx265_encoder_deps="libx265"
2659 libxavs_encoder_deps="libxavs"
2660 libxvid_encoder_deps="libxvid"
2661 libutvideo_decoder_deps="libutvideo"
2662 libutvideo_encoder_deps="libutvideo"
2663 libzvbi_teletext_decoder_deps="libzvbi"
2664 nvenc_encoder_deps="nvenc"
2665 nvenc_h264_encoder_deps="nvenc"
2666 nvenc_hevc_encoder_deps="nvenc"
2667
2668 # demuxers / muxers
2669 ac3_demuxer_select="ac3_parser"
2670 asf_demuxer_select="riffdec"
2671 asf_o_demuxer_select="riffdec"
2672 asf_muxer_select="riffenc"
2673 asf_stream_muxer_select="asf_muxer"
2674 avi_demuxer_select="riffdec exif"
2675 avi_muxer_select="riffenc"
2676 avisynth_demuxer_deps="avisynth"
2677 avisynth_demuxer_select="riffdec"
2678 caf_demuxer_select="riffdec"
2679 dash_muxer_select="mp4_muxer"
2680 dirac_demuxer_select="dirac_parser"
2681 dts_demuxer_select="dca_parser"
2682 dtshd_demuxer_select="dca_parser"
2683 dv_demuxer_select="dvprofile"
2684 dv_muxer_select="dvprofile"
2685 dxa_demuxer_select="riffdec"
2686 eac3_demuxer_select="ac3_parser"
2687 f4v_muxer_select="mov_muxer"
2688 flac_demuxer_select="flac_parser"
2689 hds_muxer_select="flv_muxer"
2690 hls_muxer_select="mpegts_muxer"
2691 image2_alias_pix_demuxer_select="image2_demuxer"
2692 image2_brender_pix_demuxer_select="image2_demuxer"
2693 ipod_muxer_select="mov_muxer"
2694 ismv_muxer_select="mov_muxer"
2695 libnut_demuxer_deps="libnut"
2696 libnut_muxer_deps="libnut"
2697 matroska_audio_muxer_select="matroska_muxer"
2698 matroska_demuxer_select="riffdec"
2699 matroska_demuxer_suggest="bzlib lzo zlib"
2700 matroska_muxer_select="riffenc"
2701 mmf_muxer_select="riffenc"
2702 mov_demuxer_select="riffdec"
2703 mov_demuxer_suggest="zlib"
2704 mov_muxer_select="riffenc rtpenc_chain"
2705 mp3_demuxer_select="mpegaudio_parser"
2706 mp4_muxer_select="mov_muxer"
2707 mpegts_muxer_select="adts_muxer latm_muxer"
2708 mpegtsraw_demuxer_select="mpegts_demuxer"
2709 mxf_d10_muxer_select="mxf_muxer"
2710 mxf_opatom_muxer_select="mxf_muxer"
2711 nut_muxer_select="riffenc"
2712 nuv_demuxer_select="riffdec"
2713 oga_muxer_select="ogg_muxer"
2714 ogg_demuxer_select="dirac_parse"
2715 opus_muxer_select="ogg_muxer"
2716 psp_muxer_select="mov_muxer"
2717 rtp_demuxer_select="sdp_demuxer"
2718 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2719 rtsp_demuxer_select="http_protocol rtpdec"
2720 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2721 sap_demuxer_select="sdp_demuxer"
2722 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2723 sdp_demuxer_select="rtpdec"
2724 smoothstreaming_muxer_select="ismv_muxer"
2725 spdif_muxer_select="aac_parser"
2726 spx_muxer_select="ogg_muxer"
2727 tak_demuxer_select="tak_parser"
2728 tg2_muxer_select="mov_muxer"
2729 tgp_muxer_select="mov_muxer"
2730 vobsub_demuxer_select="mpegps_demuxer"
2731 w64_demuxer_select="wav_demuxer"
2732 w64_muxer_select="wav_muxer"
2733 wav_demuxer_select="riffdec"
2734 wav_muxer_select="riffenc"
2735 webm_muxer_select="riffenc"
2736 wtv_demuxer_select="riffdec"
2737 wtv_muxer_select="riffenc"
2738 xmv_demuxer_select="riffdec"
2739 xwma_demuxer_select="riffdec"
2740
2741 # indevs / outdevs
2742 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2743 alsa_outdev_deps="alsa_asoundlib_h"
2744 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2745 avfoundation_indev_select="avfoundation"
2746 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2747 caca_outdev_deps="libcaca"
2748 decklink_outdev_deps="decklink pthreads"
2749 decklink_outdev_extralibs="-lstdc++"
2750 decklink_indev_deps="decklink pthreads"
2751 decklink_indev_extralibs="-lstdc++"
2752 dshow_indev_deps="IBaseFilter"
2753 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2754 dv1394_indev_deps="dv1394"
2755 dv1394_indev_select="dv_demuxer"
2756 fbdev_indev_deps="linux_fb_h"
2757 fbdev_outdev_deps="linux_fb_h"
2758 gdigrab_indev_deps="CreateDIBSection"
2759 gdigrab_indev_extralibs="-lgdi32"
2760 gdigrab_indev_select="bmp_decoder"
2761 iec61883_indev_deps="libiec61883"
2762 jack_indev_deps="jack_jack_h sem_timedwait"
2763 lavfi_indev_deps="avfilter"
2764 libcdio_indev_deps="libcdio"
2765 libdc1394_indev_deps="libdc1394"
2766 libv4l2_indev_deps="libv4l2"
2767 openal_indev_deps="openal"
2768 opengl_outdev_deps="opengl"
2769 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2770 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2771 pulse_indev_deps="libpulse"
2772 pulse_outdev_deps="libpulse"
2773 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2774 qtkit_indev_select="qtkit"
2775 sdl_outdev_deps="sdl"
2776 sndio_indev_deps="sndio_h"
2777 sndio_outdev_deps="sndio_h"
2778 v4l_indev_deps="linux_videodev_h"
2779 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2780 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2781 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2782 vfwcap_indev_extralibs="-lavicap32"
2783 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2784 xv_outdev_extralibs="-lXv -lX11 -lXext"
2785 x11grab_indev_deps="x11grab"
2786 x11grab_xcb_indev_deps="libxcb"
2787
2788 # protocols
2789 async_protocol_deps="threads"
2790 bluray_protocol_deps="libbluray"
2791 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2792 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2793 ffrtmpcrypt_protocol_select="tcp_protocol"
2794 ffrtmphttp_protocol_deps="!librtmp_protocol"
2795 ffrtmphttp_protocol_select="http_protocol"
2796 ftp_protocol_select="tcp_protocol"
2797 gopher_protocol_select="network"
2798 http_protocol_select="tcp_protocol"
2799 httpproxy_protocol_select="tcp_protocol"
2800 https_protocol_select="tls_protocol"
2801 icecast_protocol_select="http_protocol"
2802 librtmp_protocol_deps="librtmp"
2803 librtmpe_protocol_deps="librtmp"
2804 librtmps_protocol_deps="librtmp"
2805 librtmpt_protocol_deps="librtmp"
2806 librtmpte_protocol_deps="librtmp"
2807 libsmbclient_protocol_deps="libsmbclient gplv3"
2808 libssh_protocol_deps="libssh"
2809 mmsh_protocol_select="http_protocol"
2810 mmst_protocol_select="network"
2811 rtmp_protocol_deps="!librtmp_protocol"
2812 rtmp_protocol_select="tcp_protocol"
2813 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2814 rtmps_protocol_deps="!librtmp_protocol"
2815 rtmps_protocol_select="tls_protocol"
2816 rtmpt_protocol_select="ffrtmphttp_protocol"
2817 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2818 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2819 rtp_protocol_select="udp_protocol"
2820 sctp_protocol_deps="struct_sctp_event_subscribe"
2821 sctp_protocol_select="network"
2822 srtp_protocol_select="rtp_protocol"
2823 tcp_protocol_select="network"
2824 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2825 tls_gnutls_protocol_select="tcp_protocol"
2826 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2827 tls_openssl_protocol_select="tcp_protocol"
2828 tls_schannel_protocol_deps="schannel"
2829 tls_schannel_protocol_select="tcp_protocol"
2830 tls_securetransport_protocol_deps="securetransport"
2831 tls_securetransport_protocol_select="tcp_protocol"
2832 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2833 udp_protocol_select="network"
2834 udplite_protocol_select="network"
2835 unix_protocol_deps="sys_un_h"
2836 unix_protocol_select="network"
2837
2838 # filters
2839 aemphasis_filter_deps="cabs cexp"
2840 amovie_filter_deps="avcodec avformat"
2841 aresample_filter_deps="swresample"
2842 ass_filter_deps="libass"
2843 asyncts_filter_deps="avresample"
2844 atempo_filter_deps="avcodec"
2845 atempo_filter_select="rdft"
2846 azmq_filter_deps="libzmq"
2847 blackframe_filter_deps="gpl"
2848 boxblur_filter_deps="gpl"
2849 bs2b_filter_deps="libbs2b"
2850 colormatrix_filter_deps="gpl"
2851 cover_rect_filter_deps="avcodec avformat gpl"
2852 cropdetect_filter_deps="gpl"
2853 delogo_filter_deps="gpl"
2854 deshake_filter_select="pixelutils"
2855 drawtext_filter_deps="libfreetype"
2856 ebur128_filter_deps="gpl"
2857 eq_filter_deps="gpl"
2858 fftfilt_filter_deps="avcodec"
2859 fftfilt_filter_select="rdft"
2860 flite_filter_deps="libflite"
2861 find_rect_filter_deps="avcodec avformat gpl"
2862 frei0r_filter_deps="frei0r dlopen"
2863 frei0r_src_filter_deps="frei0r dlopen"
2864 fspp_filter_deps="gpl"
2865 geq_filter_deps="gpl"
2866 histeq_filter_deps="gpl"
2867 hqdn3d_filter_deps="gpl"
2868 interlace_filter_deps="gpl"
2869 kerndeint_filter_deps="gpl"
2870 ladspa_filter_deps="ladspa dlopen"
2871 mcdeint_filter_deps="avcodec gpl"
2872 movie_filter_deps="avcodec avformat"
2873 mpdecimate_filter_deps="gpl"
2874 mpdecimate_filter_select="pixelutils"
2875 mptestsrc_filter_deps="gpl"
2876 negate_filter_deps="lut_filter"
2877 perspective_filter_deps="gpl"
2878 pp7_filter_deps="gpl"
2879 ocr_filter_deps="libtesseract"
2880 ocv_filter_deps="libopencv"
2881 owdenoise_filter_deps="gpl"
2882 pan_filter_deps="swresample"
2883 phase_filter_deps="gpl"
2884 pp_filter_deps="gpl postproc"
2885 pullup_filter_deps="gpl"
2886 removelogo_filter_deps="avcodec avformat swscale"
2887 repeatfields_filter_deps="gpl"
2888 resample_filter_deps="avresample"
2889 rubberband_filter_deps="librubberband"
2890 sab_filter_deps="gpl swscale"
2891 scale_filter_deps="swscale"
2892 scale2ref_filter_deps="swscale"
2893 select_filter_select="pixelutils"
2894 smartblur_filter_deps="gpl swscale"
2895 showcqt_filter_deps="avcodec avformat swscale"
2896 showcqt_filter_select="fft"
2897 showfreqs_filter_deps="avcodec"
2898 showfreqs_filter_select="fft"
2899 showspectrum_filter_deps="avcodec"
2900 showspectrum_filter_select="rdft"
2901 sofalizer_filter_deps="netcdf avcodec"
2902 sofalizer_filter_select="fft"
2903 spp_filter_deps="gpl avcodec"
2904 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2905 stereo3d_filter_deps="gpl"
2906 subtitles_filter_deps="avformat avcodec libass"
2907 super2xsai_filter_deps="gpl"
2908 tinterlace_filter_deps="gpl"
2909 vidstabdetect_filter_deps="libvidstab"
2910 vidstabtransform_filter_deps="libvidstab"
2911 pixfmts_super2xsai_test_deps="super2xsai_filter"
2912 tinterlace_merge_test_deps="tinterlace_filter"
2913 tinterlace_pad_test_deps="tinterlace_filter"
2914 uspp_filter_deps="gpl avcodec"
2915 zmq_filter_deps="libzmq"
2916 zoompan_filter_deps="swscale"
2917 zscale_filter_deps="libzimg"
2918
2919 # examples
2920 avio_reading="avformat avcodec avutil"
2921 avio_dir_cmd="avformat avutil"
2922 avcodec_example_deps="avcodec avutil"
2923 decoding_encoding_example_deps="avcodec avformat avutil"
2924 demuxing_decoding_example_deps="avcodec avformat avutil"
2925 extract_mvs_example_deps="avcodec avformat avutil"
2926 filter_audio_example_deps="avfilter avutil"
2927 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2928 filtering_video_example_deps="avfilter avcodec avformat avutil"
2929 metadata_example_deps="avformat avutil"
2930 muxing_example_deps="avcodec avformat avutil swscale"
2931 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2932 remuxing_example_deps="avcodec avformat avutil"
2933 resampling_audio_example_deps="avutil swresample"
2934 scaling_video_example_deps="avutil swscale"
2935 transcode_aac_example_deps="avcodec avformat swresample"
2936 transcoding_example_deps="avfilter avcodec avformat avutil"
2937
2938 # libraries, in linking order
2939 avcodec_deps="avutil"
2940 avdevice_deps="avformat avcodec avutil"
2941 avfilter_deps="avutil"
2942 avformat_deps="avcodec avutil"
2943 avresample_deps="avutil"
2944 postproc_deps="avutil gpl"
2945 swresample_deps="avutil"
2946 swscale_deps="avutil"
2947
2948 # programs
2949 ffmpeg_deps="avcodec avfilter avformat swresample"
2950 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2951                null_filter
2952                setpts_filter trim_filter"
2953 ffplay_deps="avcodec avformat swscale swresample sdl"
2954 ffplay_libs='$sdl_libs'
2955 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2956 ffprobe_deps="avcodec avformat"
2957 ffserver_deps="avformat fork sarestart"
2958 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2959
2960 # documentation
2961 podpages_deps="perl"
2962 manpages_deps="perl pod2man"
2963 htmlpages_deps="perl"
2964 htmlpages_deps_any="makeinfo_html texi2html"
2965 txtpages_deps="perl makeinfo"
2966 doc_deps_any="manpages htmlpages podpages txtpages"
2967
2968 # default parameters
2969
2970 logfile="config.log"
2971
2972 # installation paths
2973 prefix_default="/usr/local"
2974 bindir_default='${prefix}/bin'
2975 datadir_default='${prefix}/share/ffmpeg'
2976 docdir_default='${prefix}/share/doc/ffmpeg'
2977 incdir_default='${prefix}/include'
2978 libdir_default='${prefix}/lib'
2979 mandir_default='${prefix}/share/man'
2980
2981 # toolchain
2982 ar_default="ar"
2983 cc_default="gcc"
2984 cxx_default="g++"
2985 host_cc_default="gcc"
2986 cp_f="cp -f"
2987 doxygen_default="doxygen"
2988 install="install"
2989 ln_s="ln -s -f"
2990 nm_default="nm -g"
2991 objformat="elf"
2992 pkg_config_default=pkg-config
2993 ranlib_default="ranlib"
2994 strip_default="strip"
2995 yasmexe_default="yasm"
2996 windres_default="windres"
2997
2998 # OS
2999 target_os_default=$(tolower $(uname -s))
3000 host_os=$target_os_default
3001
3002 # machine
3003 if test "$target_os_default" = aix; then
3004     arch_default=$(uname -p)
3005     strip_default="strip -X32_64"
3006 else
3007     arch_default=$(uname -m)
3008 fi
3009 cpu="generic"
3010 intrinsics="none"
3011
3012 # configurable options
3013 enable $PROGRAM_LIST
3014 enable $DOCUMENT_LIST
3015 enable $EXAMPLE_LIST
3016 enable $(filter_out avresample $LIBRARY_LIST)
3017 enable stripping
3018
3019 enable asm
3020 enable debug
3021 enable doc
3022 enable faan faandct faanidct
3023 enable optimizations
3024 enable runtime_cpudetect
3025 enable safe_bitstream_reader
3026 enable static
3027 enable swscale_alpha
3028 enable valgrind_backtrace
3029
3030 sws_max_filter_size_default=256
3031 set_default sws_max_filter_size
3032
3033 # Enable hwaccels by default.
3034 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3035 enable xlib
3036
3037 # build settings
3038 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3039 LIBPREF="lib"
3040 LIBSUF=".a"
3041 FULLNAME='$(NAME)$(BUILDSUF)'
3042 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3043 SLIBPREF="lib"
3044 SLIBSUF=".so"
3045 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3046 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3047 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3048 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3049 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3050 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3051
3052 asflags_filter=echo
3053 cflags_filter=echo
3054 ldflags_filter=echo
3055
3056 AS_C='-c'
3057 AS_O='-o $@'
3058 CC_C='-c'
3059 CC_E='-E -o $@'
3060 CC_O='-o $@'
3061 CXX_C='-c'
3062 CXX_O='-o $@'
3063 OBJCC_C='-c'
3064 OBJCC_E='-E -o $@'
3065 OBJCC_O='-o $@'
3066 LD_O='-o $@'
3067 LD_LIB='-l%'
3068 LD_PATH='-L'
3069 HOSTCC_C='-c'
3070 HOSTCC_E='-E -o $@'
3071 HOSTCC_O='-o $@'
3072 HOSTLD_O='-o $@'
3073
3074 host_libs='-lm'
3075 host_cflags_filter=echo
3076 host_ldflags_filter=echo
3077
3078 target_path='$(CURDIR)'
3079
3080 # since the object filename is not given with the -MM flag, the compiler
3081 # is only able to print the basename, and we must add the path ourselves
3082 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3083 DEPFLAGS='-MM'
3084
3085 # find source path
3086 if test -f configure; then
3087     source_path=.
3088 else
3089     source_path=$(cd $(dirname "$0"); pwd)
3090     case "$source_path" in
3091         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3092     esac
3093     test -e "$source_path/config.h" &&
3094         die "Out of tree builds are impossible with config.h in source dir."
3095 fi
3096
3097 for v in "$@"; do
3098     r=${v#*=}
3099     l=${v%"$r"}
3100     r=$(sh_quote "$r")
3101     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3102 done
3103
3104 find_things(){
3105     thing=$1
3106     pattern=$2
3107     file=$source_path/$3
3108     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3109 }
3110
3111 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3112 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3113 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3114 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3115 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3116 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3117 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3118 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3119 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3120 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3121 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3122
3123 ALL_COMPONENTS="
3124     $BSF_LIST
3125     $DECODER_LIST
3126     $DEMUXER_LIST
3127     $ENCODER_LIST
3128     $FILTER_LIST
3129     $HWACCEL_LIST
3130     $INDEV_LIST
3131     $MUXER_LIST
3132     $OUTDEV_LIST
3133     $PARSER_LIST
3134     $PROTOCOL_LIST
3135 "
3136
3137 for n in $COMPONENT_LIST; do
3138     v=$(toupper ${n%s})_LIST
3139     eval enable \$$v
3140     eval ${n}_if_any="\$$v"
3141 done
3142
3143 enable $ARCH_EXT_LIST
3144
3145 die_unknown(){
3146     echo "Unknown option \"$1\"."
3147     echo "See $0 --help for available options."
3148     exit 1
3149 }
3150
3151 print_in_columns() {
3152     cols=$(expr $ncols / 24)
3153     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3154 }
3155
3156 show_list() {
3157     suffix=_$1
3158     shift
3159     echo $* | sed s/$suffix//g | print_in_columns
3160     exit 0
3161 }
3162
3163 rand_list(){
3164     IFS=', '
3165     set -- $*
3166     unset IFS
3167     for thing; do
3168         comp=${thing%:*}
3169         prob=${thing#$comp}
3170         prob=${prob#:}
3171         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3172         echo "prob ${prob:-0.5}"
3173         printf '%s\n' $comp
3174     done
3175 }
3176
3177 do_random(){
3178     action=$1
3179     shift
3180     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3181     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3182 }
3183
3184 for opt do
3185     optval="${opt#*=}"
3186     case "$opt" in
3187         --extra-ldflags=*)
3188             add_ldflags $optval
3189         ;;
3190         --extra-ldexeflags=*)
3191             add_ldexeflags $optval
3192         ;;
3193         --extra-ldlibflags=*)
3194             add_ldlibflags $optval
3195         ;;
3196         --extra-libs=*)
3197             add_extralibs $optval
3198         ;;
3199         --disable-devices)
3200             disable $INDEV_LIST $OUTDEV_LIST
3201         ;;
3202         --enable-debug=*)
3203             debuglevel="$optval"
3204         ;;
3205         --disable-programs)
3206             disable $PROGRAM_LIST
3207         ;;
3208         --disable-everything)
3209             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3210         ;;
3211         --disable-all)
3212             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3213             disable $LIBRARY_LIST $PROGRAM_LIST doc
3214             enable avutil
3215         ;;
3216         --enable-random|--disable-random)
3217             action=${opt%%-random}
3218             do_random ${action#--} $COMPONENT_LIST
3219         ;;
3220         --enable-random=*|--disable-random=*)
3221             action=${opt%%-random=*}
3222             do_random ${action#--} $optval
3223         ;;
3224         --enable-*=*|--disable-*=*)
3225             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3226             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3227             eval list=\$$(toupper $thing)_LIST
3228             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3229             list=$(filter "$name" $list)
3230             [ "$list" = "" ] && warn "Option $opt did not match anything"
3231             $action $list
3232         ;;
3233         --enable-?*|--disable-?*)
3234             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3235             if is_in $option $COMPONENT_LIST; then
3236                 test $action = disable && action=unset
3237                 eval $action \$$(toupper ${option%s})_LIST
3238             elif is_in $option $CMDLINE_SELECT; then
3239                 $action $option
3240             else
3241                 die_unknown $opt
3242             fi
3243         ;;
3244         --list-*)
3245             NAME="${opt#--list-}"
3246             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3247             NAME=${NAME%s}
3248             eval show_list $NAME \$$(toupper $NAME)_LIST
3249         ;;
3250         --help|-h) show_help
3251         ;;
3252         --fatal-warnings) enable fatal_warnings
3253         ;;
3254         *)
3255             optname="${opt%%=*}"
3256             optname="${optname#--}"
3257             optname=$(echo "$optname" | sed 's/-/_/g')
3258             if is_in $optname $CMDLINE_SET; then
3259                 eval $optname='$optval'
3260             elif is_in $optname $CMDLINE_APPEND; then
3261                 append $optname "$optval"
3262             else
3263                 die_unknown $opt
3264             fi
3265         ;;
3266     esac
3267 done
3268
3269 for e in $env; do
3270     eval "export $e"
3271 done
3272
3273 disabled logging && logfile=/dev/null
3274
3275 # Disable all the library-specific components if the library itself
3276 # is disabled, see AVCODEC_LIST and following _LIST variables.
3277
3278 disable_components(){
3279     disabled ${1} && disable $(
3280         eval components="\$$(toupper ${1})_COMPONENTS"
3281         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3282     )
3283 }
3284
3285 map 'disable_components $v' $LIBRARY_LIST
3286
3287 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3288 set >> $logfile
3289
3290 test -n "$valgrind" && toolchain="valgrind-memcheck"
3291
3292 case "$toolchain" in
3293     clang-asan)
3294         cc_default="clang"
3295         add_cflags  -fsanitize=address
3296         add_ldflags -fsanitize=address
3297     ;;
3298     clang-tsan)
3299         cc_default="clang"
3300         add_cflags  -fsanitize=thread -pie
3301         add_ldflags -fsanitize=thread -pie
3302     ;;
3303     clang-usan)
3304         cc_default="clang"
3305         add_cflags  -fsanitize=undefined
3306         add_ldflags -fsanitize=undefined
3307     ;;
3308     gcc-asan)
3309         cc_default="gcc"
3310         add_cflags  -fsanitize=address
3311         add_ldflags -fsanitize=address
3312     ;;
3313     gcc-tsan)
3314         cc_default="gcc"
3315         add_cflags  -fsanitize=thread -pie -fPIC
3316         add_ldflags -fsanitize=thread -pie -fPIC
3317     ;;
3318     gcc-usan)
3319         cc_default="gcc"
3320         add_cflags  -fsanitize=undefined
3321         add_ldflags -fsanitize=undefined
3322     ;;
3323     valgrind-massif)
3324         target_exec_default=${valgrind:-"valgrind"}
3325         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"
3326     ;;
3327     valgrind-memcheck)
3328         target_exec_default=${valgrind:-"valgrind"}
3329         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3330     ;;
3331     msvc)
3332         # Check whether the current MSVC version needs the C99 converter.
3333         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3334         # support enough of C99 to build ffmpeg. Default to the new
3335         # behaviour if the regexp was unable to match anything, since this
3336         # successfully parses the version number of existing supported
3337         # versions that require the converter (MSVC 2010 and 2012).
3338         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3339         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3340             cc_default="cl"
3341         else
3342             cc_default="c99wrap cl"
3343         fi
3344         ld_default="$source_path/compat/windows/mslink"
3345         nm_default="dumpbin -symbols"
3346         ar_default="lib"
3347         case "$arch" in
3348         arm*)
3349             as_default="armasm"
3350             ;;
3351         esac
3352         target_os_default="win32"
3353         # Use a relative path for TMPDIR. This makes sure all the
3354         # ffconf temp files are written with a relative path, avoiding
3355         # issues with msys/win32 path conversion for MSVC parameters
3356         # such as -Fo<file> or -out:<file>.
3357         TMPDIR=.
3358     ;;
3359     icl)
3360         cc_default="icl"
3361         ld_default="xilink"
3362         nm_default="dumpbin -symbols"
3363         ar_default="xilib"
3364         target_os_default="win32"
3365         TMPDIR=.
3366     ;;
3367     gcov)
3368         add_cflags  -fprofile-arcs -ftest-coverage
3369         add_ldflags -fprofile-arcs -ftest-coverage
3370     ;;
3371     hardened)
3372         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3373         add_cflags   -fno-strict-overflow -fstack-protector-all
3374         add_ldflags  -Wl,-z,relro -Wl,-z,now
3375     ;;
3376     ?*)
3377         die "Unknown toolchain $toolchain"
3378     ;;
3379 esac
3380
3381 test -n "$cross_prefix" && enable cross_compile
3382
3383 if enabled cross_compile; then
3384     test -n "$arch" && test -n "$target_os" ||
3385         die "Must specify target arch and OS when cross-compiling"
3386 fi
3387
3388 ar_default="${cross_prefix}${ar_default}"
3389 cc_default="${cross_prefix}${cc_default}"
3390 cxx_default="${cross_prefix}${cxx_default}"
3391 nm_default="${cross_prefix}${nm_default}"
3392 pkg_config_default="${cross_prefix}${pkg_config_default}"
3393 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3394     ranlib_default="${cross_prefix}${ranlib_default} -D"
3395 else
3396     ranlib_default="${cross_prefix}${ranlib_default}"
3397 fi
3398 strip_default="${cross_prefix}${strip_default}"
3399 windres_default="${cross_prefix}${windres_default}"
3400
3401 sysinclude_default="${sysroot}/usr/include"
3402
3403 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3404     target_exec target_os yasmexe
3405 enabled cross_compile || host_cc_default=$cc
3406 set_default host_cc
3407
3408 pkg_config_fail_message=""
3409 if ! $pkg_config --version >/dev/null 2>&1; then
3410     warn "$pkg_config not found, library detection may fail."
3411     pkg_config=false
3412 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3413     pkg_config_fail_message="
3414 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3415 fi
3416
3417 if test $doxygen != $doxygen_default && \
3418   ! $doxygen --version >/dev/null 2>&1; then
3419     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3420 fi
3421
3422 exesuf() {
3423     case $1 in
3424         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3425     esac
3426 }
3427
3428 EXESUF=$(exesuf $target_os)
3429 HOSTEXESUF=$(exesuf $host_os)
3430
3431 # set temporary file name
3432 : ${TMPDIR:=$TEMPDIR}
3433 : ${TMPDIR:=$TMP}
3434 : ${TMPDIR:=/tmp}
3435
3436 if [ -n "$tempprefix" ] ; then
3437     mktemp(){
3438         echo $tempprefix.${HOSTNAME}.${UID}
3439     }
3440 elif ! check_cmd mktemp -u XXXXXX; then
3441     # simple replacement for missing mktemp
3442     # NOT SAFE FOR GENERAL USE
3443     mktemp(){
3444         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3445     }
3446 fi
3447
3448 tmpfile(){
3449     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3450         (set -C; exec > $tmp) 2>/dev/null ||
3451         die "Unable to create temporary file in $TMPDIR."
3452     append TMPFILES $tmp
3453     eval $1=$tmp
3454 }
3455
3456 trap 'rm -f -- $TMPFILES' EXIT
3457
3458 tmpfile TMPASM .asm
3459 tmpfile TMPC   .c
3460 tmpfile TMPCPP .cpp
3461 tmpfile TMPE   $EXESUF
3462 tmpfile TMPH   .h
3463 tmpfile TMPM   .m
3464 tmpfile TMPO   .o
3465 tmpfile TMPS   .S
3466 tmpfile TMPSH  .sh
3467 tmpfile TMPV   .ver
3468
3469 unset -f mktemp
3470
3471 chmod +x $TMPE
3472
3473 # make sure we can execute files in $TMPDIR
3474 cat > $TMPSH 2>> $logfile <<EOF
3475 #! /bin/sh
3476 EOF
3477 chmod +x $TMPSH >> $logfile 2>&1
3478 if ! $TMPSH >> $logfile 2>&1; then
3479     cat <<EOF
3480 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3481 variable to another directory and make sure that it is not mounted noexec.
3482 EOF
3483     die "Sanity test failed."
3484 fi
3485
3486 armasm_flags(){
3487     for flag; do
3488         case $flag in
3489             # Filter out MSVC cl.exe options from cflags that shouldn't
3490             # be passed to gas-preprocessor
3491             -M[TD]*)                                            ;;
3492             *)                  echo $flag                      ;;
3493         esac
3494    done
3495 }
3496
3497 ccc_flags(){
3498     for flag; do
3499         case $flag in
3500             -std=c99)           echo -c99                       ;;
3501             -mcpu=*)            echo -arch ${flag#*=}           ;;
3502             -mieee)             echo -ieee                      ;;
3503             -O*|-fast)          echo $flag                      ;;
3504             -fno-math-errno)    echo -assume nomath_errno       ;;
3505             -g)                 echo -g3                        ;;
3506             -Wall)              echo -msg_enable level2         ;;
3507             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3508             -Wl,*)              echo $flag                      ;;
3509             -f*|-W*)                                            ;;
3510             *)                  echo $flag                      ;;
3511         esac
3512    done
3513 }
3514
3515 cparser_flags(){
3516     for flag; do
3517         case $flag in
3518             -Wno-switch)             echo -Wno-switch-enum ;;
3519             -Wno-format-zero-length) ;;
3520             -Wdisabled-optimization) ;;
3521             -Wno-pointer-sign)       echo -Wno-other ;;
3522             *)                       echo $flag ;;
3523         esac
3524     done
3525 }
3526
3527 msvc_common_flags(){
3528     for flag; do
3529         case $flag in
3530             # In addition to specifying certain flags under the compiler
3531             # specific filters, they must be specified here as well or else the
3532             # generic catch all at the bottom will print the original flag.
3533             -Wall)                ;;
3534             -std=c99)             ;;
3535             # Common flags
3536             -fomit-frame-pointer) ;;
3537             -g)                   echo -Z7 ;;
3538             -fno-math-errno)      ;;
3539             -fno-common)          ;;
3540             -fno-signed-zeros)    ;;
3541             -fPIC)                ;;
3542             -mthumb)              ;;
3543             -march=*)             ;;
3544             -lz)                  echo zlib.lib ;;
3545             -lavifil32)           echo vfw32.lib ;;
3546             -lavicap32)           echo vfw32.lib user32.lib ;;
3547             -l*)                  echo ${flag#-l}.lib ;;
3548             -LARGEADDRESSAWARE)   echo $flag ;;
3549             -L*)                  echo -libpath:${flag#-L} ;;
3550             *)                    echo $flag ;;
3551         esac
3552     done
3553 }
3554
3555 msvc_flags(){
3556     msvc_common_flags "$@"
3557     for flag; do
3558         case $flag in
3559             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3560                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3561                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3562                                        -wd4307 \
3563                                        -wd4273 -wd4554 -wd4701 ;;
3564         esac
3565     done
3566 }
3567
3568 icl_flags(){
3569     msvc_common_flags "$@"
3570     for flag; do
3571         case $flag in
3572             # Despite what Intel's documentation says -Wall, which is supported
3573             # on Windows, does enable remarks so disable them here.
3574             -Wall)                echo $flag -Qdiag-disable:remark ;;
3575             -std=c99)             echo -Qstd=c99 ;;
3576             -flto)                echo -ipo ;;
3577         esac
3578     done
3579 }
3580
3581 icc_flags(){
3582     for flag; do
3583         case $flag in
3584             -flto)                echo -ipo ;;
3585             *)                    echo $flag ;;
3586         esac
3587     done
3588 }
3589
3590 pgi_flags(){
3591     for flag; do
3592         case $flag in
3593             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3594             -fomit-frame-pointer) echo -Mnoframe ;;
3595             -g)                   echo -gopt ;;
3596             *)                    echo $flag ;;
3597         esac
3598     done
3599 }
3600
3601 suncc_flags(){
3602     for flag; do
3603         case $flag in
3604             -march=*|-mcpu=*)
3605                 case "${flag#*=}" in
3606                     native)                   echo -xtarget=native       ;;
3607                     v9|niagara)               echo -xarch=sparc          ;;
3608                     ultrasparc)               echo -xarch=sparcvis       ;;
3609                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3610                     i586|pentium)             echo -xchip=pentium        ;;
3611                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3612                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3613                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3614                     pentium4*)          echo -xtarget=pentium4           ;;
3615                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3616                     *-sse3)             echo -xarch=sse3                 ;;
3617                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3618                     bonnell)                   echo -xarch=ssse3         ;;
3619                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3620                     westmere)                  echo -xtarget=westmere    ;;
3621                     silvermont)                echo -xarch=sse4_2        ;;
3622                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3623                     core-avx*|ivybridge|haswell|broadwell)
3624                                                echo -xarch=avx           ;;
3625                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3626                     btver1)                    echo -xarch=amdsse4a      ;;
3627                     btver2|bdver*)             echo -xarch=avx           ;;
3628                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3629                     k8|opteron|athlon64|athlon-fx)
3630                                                echo -xarch=sse2a         ;;
3631                     athlon*)                   echo -xarch=pentium_proa  ;;
3632                 esac
3633                 ;;
3634             -std=c99)             echo -xc99              ;;
3635             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3636             -fPIC)                echo -KPIC -xcode=pic32 ;;
3637             -W*,*)                echo $flag              ;;
3638             -f*-*|-W*|-mimpure-text)                      ;;
3639             -shared)              echo -G                 ;;
3640             *)                    echo $flag              ;;
3641         esac
3642     done
3643 }
3644
3645 tms470_flags(){
3646     for flag; do
3647         case $flag in
3648             -march=*|-mcpu=*)
3649                 case "${flag#*=}" in
3650                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3651                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3652                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3653                     armv6*|arm11*)          echo -mv=6   ;;
3654                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3655                                             echo -mv=5e  ;;
3656                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3657                 esac
3658                 ;;
3659             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3660             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3661             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3662             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3663             -msoft-float)   echo --float_support=vfplib       ;;
3664             -O[0-3]|-mf=*)  echo $flag                        ;;
3665             -g)             echo -g -mn                       ;;
3666             -pds=*)         echo $flag                        ;;
3667             -D*|-I*)        echo $flag                        ;;
3668             --gcc|--abi=*)  echo $flag                        ;;
3669             -me)            echo $flag                        ;;
3670         esac
3671     done
3672 }
3673
3674 probe_cc(){
3675     pfx=$1
3676     _cc=$2
3677     first=$3
3678
3679     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3680     unset _ld_o _ldflags _ld_lib _ld_path
3681     unset _depflags _DEPCMD _DEPFLAGS
3682     _flags_filter=echo
3683
3684     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3685         true # no-op to avoid reading stdin in following checks
3686     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3687         _type=llvm_gcc
3688         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3689         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3690         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3691         _cflags_speed='-O3'
3692         _cflags_size='-Os'
3693     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3694         _type=gcc
3695         gcc_version=$($_cc --version | head -n1)
3696         gcc_basever=$($_cc -dumpversion)
3697         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3698         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3699         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3700         case $gcc_basever in
3701             2*) ;;
3702             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3703         esac
3704         if [ "$first" = true ]; then
3705             case $gcc_basever in
3706                 4.2*)
3707                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3708             esac
3709         fi
3710         _cflags_speed='-O3'
3711         _cflags_size='-Os'
3712     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3713         _type=icc
3714         _ident=$($_cc --version | head -n1)
3715         _depflags='-MMD'
3716         _cflags_speed='-O3'
3717         _cflags_size='-Os'
3718         _cflags_noopt='-O1'
3719         _flags_filter=icc_flags
3720     elif $_cc -v 2>&1 | grep -q xlc; then
3721         _type=xlc
3722         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3723         _cflags_speed='-O5'
3724         _cflags_size='-O5 -qcompact'
3725     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3726         _type=ccc
3727         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3728         _DEPFLAGS='-M'
3729         _cflags_speed='-fast'
3730         _cflags_size='-O1'
3731         _flags_filter=ccc_flags
3732     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3733         test -d "$sysroot" || die "No valid sysroot specified."
3734         _type=armcc
3735         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3736         armcc_conf="$PWD/armcc.conf"
3737         $_cc --arm_linux_configure                 \
3738              --arm_linux_config_file="$armcc_conf" \
3739              --configure_sysroot="$sysroot"        \
3740              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3741              die "Error creating armcc configuration file."
3742         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3743         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3744         as_default="${cross_prefix}gcc"
3745         _depflags='-MMD'
3746         _cflags_speed='-O3'
3747         _cflags_size='-Os'
3748     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3749         _type=tms470
3750         _ident=$($_cc -version | head -n1 | tr -s ' ')
3751         _flags='--gcc --abi=eabi -me'
3752         _cc_e='-ppl -fe=$@'
3753         _cc_o='-fe=$@'
3754         _depflags='-ppa -ppd=$(@:.o=.d)'
3755         _cflags_speed='-O3 -mf=5'
3756         _cflags_size='-O3 -mf=2'
3757         _flags_filter=tms470_flags
3758     elif $_cc -v 2>&1 | grep -q clang; then
3759         _type=clang
3760         _ident=$($_cc --version 2>/dev/null | head -n1)
3761         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3762         _cflags_speed='-O3'
3763         _cflags_size='-Os'
3764     elif $_cc -V 2>&1 | grep -q Sun; then
3765         _type=suncc
3766         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3767         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3768         _DEPFLAGS='-xM1 -xc99'
3769         _ldflags='-std=c99'
3770         _cflags_speed='-O5'
3771         _cflags_size='-O5 -xspace'
3772         _flags_filter=suncc_flags
3773     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3774         _type=pathscale
3775         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3776         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3777         _cflags_speed='-O2'
3778         _cflags_size='-Os'
3779         _flags_filter='filter_out -Wdisabled-optimization'
3780     elif $_cc -v 2>&1 | grep -q Open64; then
3781         _type=open64
3782         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3783         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3784         _cflags_speed='-O2'
3785         _cflags_size='-Os'
3786         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3787     elif $_cc -V 2>&1 | grep -q Portland; then
3788         _type=pgi
3789         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3790         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3791         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3792         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3793         _cflags_noopt="-O"
3794         _flags_filter=pgi_flags
3795     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3796         _type=armasm
3797         _ident=$($_cc | head -n1)
3798         # 4509: "This form of conditional instruction is deprecated"
3799         _flags="-nologo -ignore 4509"
3800         _flags_filter=armasm_flags
3801     elif $_cc 2>&1 | grep -q Intel; then
3802         _type=icl
3803         _ident=$($_cc 2>&1 | head -n1)
3804         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3805         # Not only is O3 broken on 13.x+ but it is slower on all previous
3806         # versions (tested) as well.
3807         _cflags_speed="-O2"
3808         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3809         if $_cc 2>&1 | grep -q Linker; then
3810             _ld_o='-out:$@'
3811         else
3812             _ld_o='-Fe$@'
3813         fi
3814         _cc_o='-Fo$@'
3815         _cc_e='-P'
3816         _flags_filter=icl_flags
3817         _ld_lib='lib%.a'
3818         _ld_path='-libpath:'
3819         # -Qdiag-error to make icl error when seeing certain unknown arguments
3820         _flags='-nologo -Qdiag-error:4044,10157'
3821         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3822         # with MSVC which enables it by default.
3823         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3824         disable stripping
3825     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3826         _type=msvc
3827         _ident=$($_cc 2>&1 | head -n1)
3828         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3829         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3830         _cflags_speed="-O2"
3831         _cflags_size="-O1"
3832         if $_cc -nologo- 2>&1 | grep -q Linker; then
3833             _ld_o='-out:$@'
3834         else
3835             _ld_o='-Fe$@'
3836         fi
3837         _cc_o='-Fo$@'
3838         _cc_e='-P -Fi$@'
3839         _flags_filter=msvc_flags
3840         _ld_lib='lib%.a'
3841         _ld_path='-libpath:'
3842         _flags='-nologo'
3843         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3844         disable stripping
3845     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3846         _type=cparser
3847         _ident=$($_cc --version | head -n1)
3848         _depflags='-MMD'
3849         _cflags_speed='-O4'
3850         _cflags_size='-O2'
3851         _flags_filter=cparser_flags
3852     fi
3853
3854     eval ${pfx}_type=\$_type
3855     eval ${pfx}_ident=\$_ident
3856 }
3857
3858 set_ccvars(){
3859     eval ${1}_C=\${_cc_c-\${${1}_C}}
3860     eval ${1}_E=\${_cc_e-\${${1}_E}}
3861     eval ${1}_O=\${_cc_o-\${${1}_O}}
3862
3863     if [ -n "$_depflags" ]; then
3864         eval ${1}_DEPFLAGS=\$_depflags
3865     else
3866         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3867         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3868         eval DEP${1}FLAGS=\$_flags
3869     fi
3870 }
3871
3872 probe_cc cc "$cc" "true"
3873 cflags_filter=$_flags_filter
3874 cflags_speed=$_cflags_speed
3875 cflags_size=$_cflags_size
3876 cflags_noopt=$_cflags_noopt
3877 add_cflags $_flags $_cflags
3878 cc_ldflags=$_ldflags
3879 set_ccvars CC
3880
3881 probe_cc hostcc "$host_cc"
3882 host_cflags_filter=$_flags_filter
3883 add_host_cflags  $_flags $_cflags
3884 set_ccvars HOSTCC
3885
3886 test -n "$cc_type" && enable $cc_type ||
3887     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3888
3889 : ${as_default:=$cc}
3890 : ${objcc_default:=$cc}
3891 : ${dep_cc_default:=$cc}
3892 : ${ld_default:=$cc}
3893 : ${host_ld_default:=$host_cc}
3894 set_default ar as objcc dep_cc ld host_ld windres
3895
3896 probe_cc as "$as"
3897 asflags_filter=$_flags_filter
3898 add_asflags $_flags $_cflags
3899 set_ccvars AS
3900
3901 probe_cc objcc "$objcc"
3902 objcflags_filter=$_flags_filter
3903 add_objcflags $_flags $_cflags
3904 set_ccvars OBJC
3905
3906 probe_cc ld "$ld"
3907 ldflags_filter=$_flags_filter
3908 add_ldflags $_flags $_ldflags
3909 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3910 LD_O=${_ld_o-$LD_O}
3911 LD_LIB=${_ld_lib-$LD_LIB}
3912 LD_PATH=${_ld_path-$LD_PATH}
3913
3914 probe_cc hostld "$host_ld"
3915 host_ldflags_filter=$_flags_filter
3916 add_host_ldflags $_flags $_ldflags
3917 HOSTLD_O=${_ld_o-$HOSTLD_O}
3918
3919 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3920     probe_cc depcc "$dep_cc"
3921     CCDEP=${_DEPCMD:-$DEPCMD}
3922     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3923     DEPCCFLAGS=$_flags
3924 fi
3925
3926 if $ar 2>&1 | grep -q Microsoft; then
3927     arflags="-nologo"
3928     ar_o='-out:$@'
3929 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3930     arflags="rq"
3931     ar_o='$@'
3932 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3933     arflags='-Xany -r -c'
3934     ar_o='$@'
3935 elif $ar 2>&1 | grep -q "\[D\] "; then
3936     arflags="rcD"
3937     ar_o='$@'
3938 else
3939     arflags="rc"
3940     ar_o='$@'
3941 fi
3942
3943 add_cflags $extra_cflags
3944 add_cxxflags $extra_cxxflags
3945 add_objcflags $extra_objcflags
3946 add_asflags $extra_cflags
3947
3948 if test -n "$sysroot"; then
3949     case "$cc_type" in
3950         gcc|llvm_gcc|clang)
3951             add_cppflags --sysroot="$sysroot"
3952             add_ldflags --sysroot="$sysroot"
3953 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3954             add_cppflags -isysroot "$sysroot"
3955             add_ldflags -isysroot "$sysroot"
3956         ;;
3957         tms470)
3958             add_cppflags -I"$sysinclude"
3959             add_ldflags  --sysroot="$sysroot"
3960         ;;
3961     esac
3962 fi
3963
3964 if test "$cpu" = host; then
3965     enabled cross_compile &&
3966         die "--cpu=host makes no sense when cross-compiling."
3967
3968     case "$cc_type" in
3969         gcc|llvm_gcc)
3970             check_native(){
3971                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3972                 sed -n "/cc1.*$1=/{
3973                             s/.*$1=\\([^ ]*\\).*/\\1/
3974                             p
3975                             q
3976                         }" $TMPE
3977             }
3978             cpu=$(check_native -march || check_native -mcpu)
3979         ;;
3980     esac
3981
3982     test "${cpu:-host}" = host &&
3983         die "--cpu=host not supported with compiler $cc"
3984 fi
3985
3986 # Deal with common $arch aliases
3987 case "$arch" in
3988     aarch64|arm64)
3989         arch="aarch64"
3990     ;;
3991     arm*|iPad*|iPhone*)
3992         arch="arm"
3993     ;;
3994     mips*|IP*)
3995         arch="mips"
3996     ;;
3997     parisc*|hppa*)
3998         arch="parisc"
3999     ;;
4000     "Power Macintosh"|ppc*|powerpc*)
4001         arch="ppc"
4002     ;;
4003     s390|s390x)
4004         arch="s390"
4005     ;;
4006     sh4|sh)
4007         arch="sh4"
4008     ;;
4009     sun4u|sparc*)
4010         arch="sparc"
4011     ;;
4012     tilegx|tile-gx)
4013         arch="tilegx"
4014     ;;
4015     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4016         arch="x86"
4017     ;;
4018 esac
4019
4020 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4021 enable $arch
4022
4023 # Add processor-specific flags
4024 if enabled aarch64; then
4025
4026     case $cpu in
4027         armv*)
4028             cpuflags="-march=$cpu"
4029         ;;
4030         *)
4031             cpuflags="-mcpu=$cpu"
4032         ;;
4033     esac
4034
4035 elif enabled alpha; then
4036
4037     cpuflags="-mcpu=$cpu"
4038
4039 elif enabled arm; then
4040
4041     check_arm_arch() {
4042         check_cpp_condition stddef.h \
4043             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4044             $cpuflags
4045     }
4046
4047     probe_arm_arch() {
4048         if   check_arm_arch 4;        then echo armv4;
4049         elif check_arm_arch 4T;       then echo armv4t;
4050         elif check_arm_arch 5;        then echo armv5;
4051         elif check_arm_arch 5E;       then echo armv5e;
4052         elif check_arm_arch 5T;       then echo armv5t;
4053         elif check_arm_arch 5TE;      then echo armv5te;
4054         elif check_arm_arch 5TEJ;     then echo armv5te;
4055         elif check_arm_arch 6;        then echo armv6;
4056         elif check_arm_arch 6J;       then echo armv6j;
4057         elif check_arm_arch 6K;       then echo armv6k;
4058         elif check_arm_arch 6Z;       then echo armv6z;
4059         elif check_arm_arch 6ZK;      then echo armv6zk;
4060         elif check_arm_arch 6T2;      then echo armv6t2;
4061         elif check_arm_arch 7;        then echo armv7;
4062         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4063         elif check_arm_arch 7S;       then echo armv7-a;
4064         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4065         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4066         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4067         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4068         fi
4069     }
4070
4071     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4072
4073     case $cpu in
4074         armv*)
4075             cpuflags="-march=$cpu"
4076             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4077         ;;
4078         *)
4079             cpuflags="-mcpu=$cpu"
4080             case $cpu in
4081                 cortex-a*)                               subarch=armv7a  ;;
4082                 cortex-r*)                               subarch=armv7r  ;;
4083                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4084                 arm11*)                                  subarch=armv6   ;;
4085                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4086                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4087                 *)                             subarch=$(probe_arm_arch) ;;
4088             esac
4089         ;;
4090     esac
4091
4092     case "$subarch" in
4093         armv5t*)    enable fast_clz                ;;
4094         armv[6-8]*)
4095             enable fast_clz
4096             disabled fast_unaligned || enable fast_unaligned
4097             ;;
4098     esac
4099
4100 elif enabled avr32; then
4101
4102     case $cpu in
4103         ap7[02]0[0-2])
4104             subarch="avr32_ap"
4105             cpuflags="-mpart=$cpu"
4106         ;;
4107         ap)
4108             subarch="avr32_ap"
4109             cpuflags="-march=$cpu"
4110         ;;
4111         uc3[ab]*)
4112             subarch="avr32_uc"
4113             cpuflags="-mcpu=$cpu"
4114         ;;
4115         uc)
4116             subarch="avr32_uc"
4117             cpuflags="-march=$cpu"
4118         ;;
4119     esac
4120
4121 elif enabled bfin; then
4122
4123     cpuflags="-mcpu=$cpu"
4124
4125 elif enabled mips; then
4126
4127     cpuflags="-march=$cpu"
4128
4129     case $cpu in
4130         24kc)
4131             disable mips64r2
4132             disable mips64r6
4133             disable mipsfpu
4134             disable mipsdsp
4135             disable mipsdspr2
4136             disable msa
4137         ;;
4138         24kf*)
4139             disable mips64r2
4140             disable mips64r6
4141             disable mipsdsp
4142             disable mipsdspr2
4143             disable msa
4144         ;;
4145         24kec|34kc|1004kc)
4146             disable mips64r2
4147             disable mips64r6
4148             disable mipsfpu
4149             disable mipsdspr2
4150             disable msa
4151         ;;
4152         24kef*|34kf*|1004kf*)
4153             disable mips64r2
4154             disable mips64r6
4155             disable mipsdspr2
4156             disable msa
4157         ;;
4158         74kc)
4159             disable mips64r2
4160             disable mips64r6
4161             disable mipsfpu
4162             disable msa
4163         ;;
4164         74kf)
4165             disable mips64r2
4166             disable mips64r6
4167             disable msa
4168         ;;
4169         p5600)
4170             disable mips64r2
4171             disable mips64r6
4172             disable mipsdsp
4173             disable mipsdspr2
4174             check_cflags "-mtune=p5600" &&
4175             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4176             add_asflags "-mfp64"
4177         ;;
4178         i6400)
4179             disable mips32r2
4180             disable mips64r2
4181             disable mipsdsp
4182             disable mipsdspr2
4183             check_cflags "-mtune=i6400 -mabi=64" &&
4184             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4185             check_ldflags "-mabi=64" &&
4186             add_asflags "-mfp64"
4187         ;;
4188         loongson*)
4189             disable mipsfpu
4190             disable mips32r2
4191             disable mips64r2
4192             disable mips64r6
4193             disable mipsdsp
4194             disable mipsdspr2
4195             disable msa
4196             enable local_aligned_8 local_aligned_16 local_aligned_32
4197             enable simd_align_16
4198             enable fast_64bit
4199             enable fast_clz
4200             enable fast_cmov
4201             enable fast_unaligned
4202             disable aligned_stack
4203             case $cpu in
4204                 loongson3*)
4205                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4206                 ;;
4207                 loongson2e)
4208                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4209                 ;;
4210                 loongson2f)
4211                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4212                 ;;
4213             esac
4214         ;;
4215         generic)
4216             disable mips64r6
4217             disable msa
4218         ;;
4219         *)
4220             disable mipsfpu
4221             disable mips32r2
4222             disable mips64r2
4223             disable mips64r6
4224             disable mipsdsp
4225             disable mipsdspr2
4226             disable msa
4227         ;;
4228     esac
4229
4230 elif enabled ppc; then
4231
4232     disable ldbrx
4233
4234     case $(tolower $cpu) in
4235         601|ppc601|powerpc601)
4236             cpuflags="-mcpu=601"
4237             disable altivec
4238         ;;
4239         603*|ppc603*|powerpc603*)
4240             cpuflags="-mcpu=603"
4241             disable altivec
4242         ;;
4243         604*|ppc604*|powerpc604*)
4244             cpuflags="-mcpu=604"
4245             disable altivec
4246         ;;
4247         g3|75*|ppc75*|powerpc75*)
4248             cpuflags="-mcpu=750"
4249             disable altivec
4250         ;;
4251         g4|745*|ppc745*|powerpc745*)
4252             cpuflags="-mcpu=7450"
4253             disable vsx
4254         ;;
4255         74*|ppc74*|powerpc74*)
4256             cpuflags="-mcpu=7400"
4257             disable vsx
4258         ;;
4259         g5|970|ppc970|powerpc970)
4260             cpuflags="-mcpu=970"
4261             disable vsx
4262         ;;
4263         power[3-6]*)
4264             cpuflags="-mcpu=$cpu"
4265             disable vsx
4266         ;;
4267         power[7-8]*)
4268             cpuflags="-mcpu=$cpu"
4269         ;;
4270         cell)
4271             cpuflags="-mcpu=cell"
4272             enable ldbrx
4273             disable vsx
4274         ;;
4275         e500mc)
4276             cpuflags="-mcpu=e500mc"
4277             disable altivec
4278         ;;
4279         e500v2)
4280             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4281             disable altivec
4282             disable dcbzl
4283         ;;
4284         e500)
4285             cpuflags="-mcpu=8540 -mhard-float"
4286             disable altivec
4287             disable dcbzl
4288         ;;
4289     esac
4290
4291 elif enabled sparc; then
4292
4293     case $cpu in
4294         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4295             cpuflags="-mcpu=$cpu"
4296         ;;
4297         ultrasparc*|niagara[234])
4298             cpuflags="-mcpu=$cpu"
4299         ;;
4300     esac
4301
4302 elif enabled x86; then
4303
4304     case $cpu in
4305         i[345]86|pentium)
4306             cpuflags="-march=$cpu"
4307             disable i686
4308             disable mmx
4309         ;;
4310         # targets that do NOT support nopl and conditional mov (cmov)
4311         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4312             cpuflags="-march=$cpu"
4313             disable i686
4314         ;;
4315         # targets that do support nopl and conditional mov (cmov)
4316         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4317         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4318             cpuflags="-march=$cpu"
4319             enable i686
4320             enable fast_cmov
4321         ;;
4322         # targets that do support conditional mov but on which it's slow
4323         pentium4|pentium4m|prescott|nocona)
4324             cpuflags="-march=$cpu"
4325             enable i686
4326             disable fast_cmov
4327         ;;
4328     esac
4329
4330 fi
4331
4332 if [ "$cpu" != generic ]; then
4333     add_cflags  $cpuflags
4334     add_asflags $cpuflags
4335     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4336 fi
4337
4338 # compiler sanity check
4339 check_exec <<EOF
4340 int main(void){ return 0; }
4341 EOF
4342 if test "$?" != 0; then
4343     echo "$cc is unable to create an executable file."
4344     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4345         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4346         echo "Only do this if you know what cross compiling means."
4347     fi
4348     die "C compiler test failed."
4349 fi
4350
4351 add_cppflags -D_ISOC99_SOURCE
4352 add_cxxflags -D__STDC_CONSTANT_MACROS
4353 check_cflags -std=c99
4354 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4355 #include <stdlib.h>
4356 EOF
4357 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4358 #include <stdlib.h>
4359 EOF
4360
4361 add_host_cppflags -D_ISOC99_SOURCE
4362 check_host_cflags -std=c99
4363 check_host_cflags -Wall
4364 check_host_cflags -O3
4365
4366 check_64bit(){
4367     arch32=$1
4368     arch64=$2
4369     expr=$3
4370     check_code cc "" "int test[2*($expr) - 1]" &&
4371         subarch=$arch64 || subarch=$arch32
4372 }
4373
4374 case "$arch" in
4375     aarch64|alpha|ia64)
4376         spic=$shared
4377     ;;
4378     mips)
4379         check_64bit mips mips64 '_MIPS_SIM > 1'
4380         spic=$shared
4381     ;;
4382     parisc)
4383         check_64bit parisc parisc64 'sizeof(void *) > 4'
4384         spic=$shared
4385     ;;
4386     ppc)
4387         check_64bit ppc ppc64 'sizeof(void *) > 4'
4388         spic=$shared
4389     ;;
4390     s390)
4391         check_64bit s390 s390x 'sizeof(void *) > 4'
4392         spic=$shared
4393     ;;
4394     sparc)
4395         check_64bit sparc sparc64 'sizeof(void *) > 4'
4396         spic=$shared
4397     ;;
4398     x86)
4399         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4400         # Treat x32 as x64 for now. Note it also needs spic=$shared
4401         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4402             subarch=x86_64
4403         if test "$subarch" = "x86_64"; then
4404             spic=$shared
4405         fi
4406     ;;
4407     ppc)
4408         check_cc <<EOF && subarch="ppc64"
4409         int test[(int)sizeof(char*) - 7];
4410 EOF
4411     ;;
4412 esac
4413
4414 enable $subarch
4415 enabled spic && enable_weak pic
4416
4417 # OS specific
4418 case $target_os in
4419     aix)
4420         SHFLAGS=-shared
4421         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4422         enabled shared && add_ldflags -Wl,-brtl
4423         ;;
4424     android)
4425         disable symver
4426         enable section_data_rel_ro
4427         SLIB_INSTALL_NAME='$(SLIBNAME)'
4428         SLIB_INSTALL_LINKS=
4429         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4430         ;;
4431     haiku)
4432         prefix_default="/boot/common"
4433         network_extralibs="-lnetwork"
4434         host_libs=
4435         ;;
4436     sunos)
4437         SHFLAGS='-shared -Wl,-h,$$(@F)'
4438         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4439         network_extralibs="-lsocket -lnsl"
4440         add_cppflags -D__EXTENSIONS__
4441         # When using suncc to build, the Solaris linker will mark
4442         # an executable with each instruction set encountered by
4443         # the Solaris assembler.  As our libraries contain their own
4444         # guards for processor-specific code, instead suppress
4445         # generation of the HWCAPS ELF section on Solaris x86 only.
4446         enabled_all suncc x86 &&
4447             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4448             add_ldflags -Wl,-M,mapfile
4449         nm_default='nm -P -g'
4450         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4451         ;;
4452     netbsd)
4453         disable symver
4454         oss_indev_extralibs="-lossaudio"
4455         oss_outdev_extralibs="-lossaudio"
4456         enabled gcc || check_ldflags -Wl,-zmuldefs
4457         ;;
4458     openbsd|bitrig)
4459         disable symver
4460         SHFLAGS='-shared'
4461         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4462         SLIB_INSTALL_LINKS=
4463         oss_indev_extralibs="-lossaudio"
4464         oss_outdev_extralibs="-lossaudio"
4465         ;;
4466     dragonfly)
4467         disable symver
4468         ;;
4469     freebsd)
4470         ;;
4471     bsd/os)
4472         add_extralibs -lpoll -lgnugetopt
4473         strip="strip -d"
4474         ;;
4475     darwin)
4476         enabled ppc && add_asflags -force_cpusubtype_ALL
4477         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4478         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4479         strip="${strip} -x"
4480         add_ldflags -Wl,-dynamic,-search_paths_first
4481         SLIBSUF=".dylib"
4482         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4483         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4484         objformat="macho"
4485         enabled x86_64 && objformat="macho64"
4486         enabled_any pic shared x86_64 ||
4487             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4488         ;;
4489     msys*)
4490         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4491         ;;
4492     mingw32*|mingw64*)
4493         if test $target_os = "mingw32ce"; then
4494             disable network
4495         else
4496             target_os=mingw32
4497         fi
4498         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4499         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4500         LIBTARGET=i386
4501         if enabled x86_64; then
4502             LIBTARGET="i386:x86-64"
4503         elif enabled arm; then
4504             LIBTARGET=arm-wince
4505         fi
4506         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4507         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4508         shlibdir_default="$bindir_default"
4509         SLIBPREF=""
4510         SLIBSUF=".dll"
4511         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4512         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4513         dlltool="${cross_prefix}dlltool"
4514         if check_cmd lib.exe -list; then
4515             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4516             if enabled x86_64; then
4517                 LIBTARGET=x64
4518             fi
4519         elif check_cmd $dlltool --version; then
4520             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4521         fi
4522         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4523         SLIB_INSTALL_LINKS=
4524         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4525         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4526         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4527         objformat="win32"
4528         ranlib=:
4529         enable dos_paths
4530         check_ldflags -Wl,--nxcompat,--dynamicbase
4531         # Lets work around some stupidity in binutils.
4532         # ld will strip relocations from executables even though we need them
4533         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4534         # however ld then forgets what the entry point should be (oops) so we
4535         # have to manually (re)set it.
4536         if enabled x86_32; then
4537             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4538         elif enabled x86_64; then
4539             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4540             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4541             # Set image base >4GB for extra entropy with HEASLR
4542             add_ldexeflags -Wl,--image-base,0x140000000
4543             append SHFLAGS -Wl,--image-base,0x180000000
4544         fi
4545         ;;
4546     win32|win64)
4547         disable symver
4548         if enabled shared; then
4549             # Link to the import library instead of the normal static library
4550             # for shared libs.
4551             LD_LIB='%.lib'
4552             # Cannot build both shared and static libs with MSVC or icl.
4553             disable static
4554         fi
4555         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4556         shlibdir_default="$bindir_default"
4557         SLIBPREF=""
4558         SLIBSUF=".dll"
4559         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4560         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4561         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4562         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4563         SLIB_INSTALL_LINKS=
4564         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4565         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4566         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4567         objformat="win32"
4568         ranlib=:
4569         enable dos_paths
4570         ;;
4571     cygwin*)
4572         target_os=cygwin
4573         shlibdir_default="$bindir_default"
4574         SLIBPREF="cyg"
4575         SLIBSUF=".dll"
4576         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4577         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4578         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4579         SLIB_INSTALL_LINKS=
4580         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4581         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4582         objformat="win32"
4583         enable dos_paths
4584         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4585         ;;
4586     *-dos|freedos|opendos)
4587         network_extralibs="-lsocket"
4588         objformat="coff"
4589         enable dos_paths
4590         add_cppflags -U__STRICT_ANSI__
4591         ;;
4592     linux)
4593         enable dv1394
4594         enable section_data_rel_ro
4595         ;;
4596     irix*)
4597         target_os=irix
4598         ranlib="echo ignoring ranlib"
4599         ;;
4600     os/2*)
4601         strip="lxlite -CS"
4602         ln_s="cp -f"
4603         objformat="aout"
4604         add_cppflags -D_GNU_SOURCE
4605         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4606         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4607         LIBSUF="_s.a"
4608         SLIBPREF=""
4609         SLIBSUF=".dll"
4610         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4611         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4612         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4613             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4614             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4615             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4616             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4617         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4618             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4619         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4620         enable dos_paths
4621         enable_weak os2threads
4622         ;;
4623     gnu/kfreebsd)
4624         add_cppflags -D_BSD_SOURCE
4625         ;;
4626     gnu)
4627         ;;
4628     qnx)
4629         add_cppflags -D_QNX_SOURCE
4630         network_extralibs="-lsocket"
4631         ;;
4632     symbian)
4633         SLIBSUF=".dll"
4634         enable dos_paths
4635         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4636         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4637         add_ldflags -Wl,--target1-abs,--no-undefined \
4638                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4639                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4640         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4641                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4642                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4643         ;;
4644     osf1)
4645         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4646         ;;
4647     minix)
4648         ;;
4649     plan9)
4650         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4651                      -D_REENTRANT_SOURCE        \
4652                      -D_RESEARCH_SOURCE         \
4653                      -DFD_SETSIZE=96            \
4654                      -DHAVE_SOCK_OPTS
4655         add_compat strtod.o strtod=avpriv_strtod
4656         network_extralibs='-lbsd'
4657         exeobjs=compat/plan9/main.o
4658         disable ffserver
4659         cp_f='cp'
4660         ;;
4661     none)
4662         ;;
4663     *)
4664         die "Unknown OS '$target_os'."
4665         ;;
4666 esac
4667
4668 # determine libc flavour
4669
4670 probe_libc(){
4671     pfx=$1
4672     pfx_no_=${pfx%_}
4673     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4674     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4675         eval ${pfx}libc_type=uclibc
4676         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4677     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4678         eval ${pfx}libc_type=glibc
4679         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4680     # MinGW headers can be installed on Cygwin, so check for newlib first.
4681     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4682         eval ${pfx}libc_type=newlib
4683         add_${pfx}cppflags -U__STRICT_ANSI__
4684     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4685     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4686         eval ${pfx}libc_type=mingw64
4687         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4688             add_compat msvcrt/snprintf.o
4689             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4690         fi
4691         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4692         eval test \$${pfx_no_}cc_type = "gcc" &&
4693             add_${pfx}cppflags -D__printf__=__gnu_printf__
4694     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4695          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4696         eval ${pfx}libc_type=mingw32
4697         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4698             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4699             die "ERROR: MinGW32 runtime version must be >= 3.15."
4700         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4701         eval test \$${pfx_no_}cc_type = "gcc" &&
4702             add_${pfx}cppflags -D__printf__=__gnu_printf__
4703     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4704         eval ${pfx}libc_type=msvcrt
4705         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4706             if [ "$pfx" = host_ ]; then
4707                 add_host_cppflags -Dsnprintf=_snprintf
4708             else
4709                 add_compat strtod.o strtod=avpriv_strtod
4710                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4711                                              _snprintf=avpriv_snprintf  \
4712                                              vsnprintf=avpriv_vsnprintf
4713             fi
4714         fi
4715         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4716         # 0x601 by default unless something else is set by the user.
4717         # This can easily lead to us detecting functions only present
4718         # in such new versions and producing binaries requiring windows 7.0.
4719         # Therefore explicitly set the default to XP unless the user has
4720         # set something else on the command line.
4721         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4722         # family. For these cases, configure is free to use any functions
4723         # found in the SDK headers by default. (Alternatively, we could force
4724         # _WIN32_WINNT to 0x0602 in that case.)
4725         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4726             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4727 #ifdef WINAPI_FAMILY
4728 #include <winapifamily.h>
4729 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4730 #error not desktop
4731 #endif
4732 #endif
4733 EOF
4734     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4735         eval ${pfx}libc_type=klibc
4736     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4737         eval ${pfx}libc_type=bionic
4738     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4739         eval ${pfx}libc_type=solaris
4740         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4741     fi
4742     check_${pfx}cc <<EOF
4743 #include <time.h>
4744 void *v = localtime_r;
4745 EOF
4746 test "$?" != 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
4747 #include <time.h>
4748 void *v = localtime_r;
4749 EOF
4750
4751 }
4752
4753 probe_libc
4754 test -n "$libc_type" && enable libc_$libc_type
4755 probe_libc host_
4756 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4757
4758 case $libc_type in
4759     bionic)
4760         add_compat strtod.o strtod=avpriv_strtod
4761         ;;
4762 esac
4763
4764 # hacks for compiler/libc/os combinations
4765
4766 if enabled_all tms470 libc_glibc; then
4767     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4768     add_cppflags -D__USER_LABEL_PREFIX__=
4769     add_cppflags -D__builtin_memset=memset
4770     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4771     add_cflags   -pds=48    # incompatible redefinition of macro
4772 fi
4773
4774 if enabled_all ccc libc_glibc; then
4775     add_ldflags -Wl,-z,now  # calls to libots crash without this
4776 fi
4777
4778 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4779     add_cppflags '-I\$(SRC_PATH)/compat/float'
4780
4781 esc(){
4782     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4783 }
4784
4785 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4786
4787 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4788
4789 set_default libdir
4790 : ${shlibdir_default:="$libdir"}
4791 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4792
4793 set_default $PATHS_LIST
4794 set_default nm
4795
4796 # we need to build at least one lib type
4797 if ! enabled_any static shared; then
4798     cat <<EOF
4799 At least one library type must be built.
4800 Specify --enable-static to build the static libraries or --enable-shared to
4801 build the shared libraries as well. To only build the shared libraries specify
4802 --disable-static in addition to --enable-shared.
4803 EOF
4804     exit 1;
4805 fi
4806
4807 die_license_disabled() {
4808     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4809 }
4810
4811 die_license_disabled_gpl() {
4812     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4813 }
4814
4815 die_license_disabled gpl frei0r
4816 die_license_disabled gpl libcdio
4817 die_license_disabled gpl librubberband
4818 die_license_disabled gpl libsmbclient
4819 die_license_disabled gpl libutvideo
4820 die_license_disabled gpl libvidstab
4821 die_license_disabled gpl libx264
4822 die_license_disabled gpl libx265
4823 die_license_disabled gpl libxavs
4824 die_license_disabled gpl libxvid
4825 die_license_disabled gpl libzvbi
4826 die_license_disabled gpl x11grab
4827
4828 die_license_disabled nonfree libaacplus
4829 die_license_disabled nonfree libfaac
4830 die_license_disabled nonfree nvenc
4831 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4832 enabled gpl && die_license_disabled_gpl nonfree openssl
4833
4834 die_license_disabled version3 gmp
4835 die_license_disabled version3 libopencore_amrnb
4836 die_license_disabled version3 libopencore_amrwb
4837 die_license_disabled version3 libsmbclient
4838 die_license_disabled version3 libvo_aacenc
4839 die_license_disabled version3 libvo_amrwbenc
4840
4841 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4842
4843 disabled optimizations || check_cflags -fomit-frame-pointer
4844
4845 enable_weak_pic() {
4846     disabled pic && return
4847     enable pic
4848     add_cppflags -DPIC
4849     case "$target_os" in
4850     mingw*|cygwin*)
4851         ;;
4852     *)
4853         add_cflags -fPIC
4854         ;;
4855     esac
4856     add_asflags  -fPIC
4857 }
4858
4859 enabled pic && enable_weak_pic
4860
4861 check_cc <<EOF || die "Symbol mangling check failed."
4862 int ff_extern;
4863 EOF
4864 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4865 extern_prefix=${sym%%ff_extern*}
4866
4867 check_cc <<EOF && enable_weak inline_asm
4868 void foo(void) { __asm__ volatile ("" ::); }
4869 EOF
4870
4871 _restrict=
4872 for restrict_keyword in restrict __restrict__ __restrict; do
4873     check_cc <<EOF && _restrict=$restrict_keyword && break
4874 void foo(char * $restrict_keyword p);
4875 EOF
4876 done
4877
4878 check_cc <<EOF && enable pragma_deprecated
4879 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4880 EOF
4881
4882 check_cc <<EOF && enable attribute_packed
4883 struct { int x; } __attribute__((packed)) x;
4884 EOF
4885
4886 check_cc <<EOF && enable attribute_may_alias
4887 union { int x; } __attribute__((may_alias)) x;
4888 EOF
4889
4890 check_cc <<EOF || die "endian test failed"
4891 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4892 EOF
4893 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4894
4895 if ! enabled ppc64 || enabled bigendian; then
4896     disable vsx
4897 fi
4898
4899 check_gas() {
4900     log "check_gas using '$as' as AS"
4901     # :vararg is used on aarch64, arm and ppc altivec
4902     check_as <<EOF || return 1
4903 .macro m n, y:vararg=0
4904 \n: .int \y
4905 .endm
4906 m x
4907 EOF
4908     # .altmacro is only used in arm asm
4909     ! enabled arm || check_as <<EOF || return 1
4910 .altmacro
4911 EOF
4912     enable gnu_as
4913     return 0
4914 }
4915
4916 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4917     nogas=:
4918     enabled_any arm aarch64 && nogas=die
4919     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4920     as_noop=-v
4921
4922     case $as_type in
4923         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4924         gcc)  gaspp_as_type=gas ;;
4925         *)    gaspp_as_type=$as_type ;;
4926     esac
4927
4928     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4929
4930     test "${as#*gas-preprocessor.pl}" != "$as" ||
4931     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4932         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4933
4934     if ! check_gas ; then
4935         as=${gas:=$as}
4936         check_gas || \
4937             $nogas "GNU assembler not found, install/update gas-preprocessor"
4938     fi
4939
4940     check_as <<EOF && enable as_func
4941 .func test
4942 .endfunc
4943 EOF
4944 fi
4945
4946 check_inline_asm inline_asm_labels '"1:\n"'
4947
4948 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4949
4950 if enabled aarch64; then
4951     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4952     # internal assembler in clang 3.3 does not support this instruction
4953     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4954     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4955
4956     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4957
4958 elif enabled alpha; then
4959
4960     check_cflags -mieee
4961
4962 elif enabled arm; then
4963
4964     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4965
4966     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4967 float func(float a, float b){ return a+b; }
4968 EOF
4969
4970     enabled thumb && check_cflags -mthumb || check_cflags -marm
4971
4972     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4973         enable vfp_args
4974     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4975         enable vfp_args
4976     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4977         case "${cross_prefix:-$cc}" in
4978             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4979             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4980 __asm__ (".eabi_attribute 28, 1");
4981 int main(void) { return 0; }
4982 EOF
4983         esac
4984         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4985     fi
4986
4987     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4988     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4989     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4990     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4991     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4992     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4993     enabled setend  && check_insn setend  'setend be'
4994
4995     [ $target_os = linux ] || [ $target_os = android ] ||
4996         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4997             $ARCH_EXT_LIST_ARM
4998
4999     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5000
5001     check_as <<EOF && enable as_dn_directive
5002 ra .dn d0.i16
5003 .unreq ra
5004 EOF
5005
5006     # llvm's integrated assembler supports .object_arch from llvm 3.5
5007     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5008 .object_arch armv4
5009 EOF
5010
5011     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5012
5013 elif enabled mips; then
5014
5015     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5016     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5017     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5018
5019     # Enable minimum ISA based on selected options
5020     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5021         add_cflags "-mips64r2"
5022         add_asflags "-mips64r2"
5023     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5024         add_cflags "-mips64"
5025         add_asflags "-mips64"
5026     elif enabled mipsdsp || enabled mipsdspr2; then
5027         add_cflags "-mips32r2 -mfp32"
5028         add_asflags "-mips32r2 -mfp32"
5029     fi
5030
5031     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5032      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5033     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5034      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5035     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5036      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5037     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5038      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5039
5040     enabled msa && add_asflags "-mmsa"
5041
5042 elif enabled parisc; then
5043
5044     if enabled gcc; then
5045         case $($cc -dumpversion) in
5046             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5047         esac
5048     fi
5049
5050 elif enabled ppc; then
5051
5052     enable local_aligned_8 local_aligned_16 local_aligned_32
5053
5054     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5055     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5056     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5057     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5058
5059     # AltiVec flags: The FSF version of GCC differs from the Apple version
5060     if enabled altivec; then
5061         check_cflags -maltivec -mabi=altivec &&
5062         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5063         check_cflags -faltivec
5064
5065         # check if our compiler supports Motorola AltiVec C API
5066         check_cc <<EOF || disable altivec
5067 $inc_altivec_h
5068 int main(void) {
5069     vector signed int v1 = (vector signed int) { 0 };
5070     vector signed int v2 = (vector signed int) { 1 };
5071     v1 = vec_add(v1, v2);
5072     return 0;
5073 }
5074 EOF
5075
5076         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5077     fi
5078
5079     if enabled vsx; then
5080         check_cflags -mvsx &&
5081         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5082     fi
5083
5084     if enabled power8; then
5085         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5086     fi
5087
5088 elif enabled x86; then
5089
5090     check_builtin rdtsc    intrin.h   "__rdtsc()"
5091     check_builtin mm_empty mmintrin.h "_mm_empty()"
5092
5093     enable local_aligned_8 local_aligned_16 local_aligned_32
5094
5095     # check whether EBP is available on x86
5096     # As 'i' is stored on the stack, this program will crash
5097     # if the base pointer is used to access it because the
5098     # base pointer is cleared in the inline assembly code.
5099     check_exec_crash <<EOF && enable ebp_available
5100 volatile int i=0;
5101 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5102 return i;
5103 EOF
5104
5105     # check whether EBX is available on x86
5106     check_inline_asm ebx_available '""::"b"(0)' &&
5107         check_inline_asm ebx_available '"":::"%ebx"'
5108
5109     # check whether xmm clobbers are supported
5110     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5111
5112     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5113         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5114
5115     # check whether binutils is new enough to compile SSSE3/MMXEXT
5116     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5117     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5118
5119     if ! disabled_any asm mmx yasm; then
5120         if check_cmd $yasmexe --version; then
5121             enabled x86_64 && yasm_extra="-m amd64"
5122             yasm_debug="-g dwarf2"
5123         elif check_cmd nasm -v; then
5124             yasmexe=nasm
5125             yasm_debug="-g -F dwarf"
5126             if enabled x86_64; then
5127                 case "$objformat" in
5128                     elf)   objformat=elf64 ;;
5129                     win32) objformat=win64 ;;
5130                 esac
5131             fi
5132         fi
5133
5134         YASMFLAGS="-f $objformat $yasm_extra"
5135         enabled pic               && append YASMFLAGS "-DPIC"
5136         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5137         case "$objformat" in
5138             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5139         esac
5140
5141         check_yasm "movbe ecx, [5]" && enable yasm ||
5142             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5143         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5144         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5145         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5146         check_yasm "CPU amdnop" || disable cpunop
5147     fi
5148
5149     case "$cpu" in
5150         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5151             disable fast_clz
5152         ;;
5153     esac
5154
5155 fi
5156
5157 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5158
5159 check_ldflags -Wl,--as-needed
5160 check_ldflags -Wl,-z,noexecstack
5161
5162 if check_func dlopen; then
5163     ldl=
5164 elif check_func dlopen -ldl; then
5165     ldl=-ldl
5166 fi
5167
5168 frei0r_filter_extralibs='$ldl'
5169 frei0r_src_filter_extralibs='$ldl'
5170 ladspa_filter_extralibs='$ldl'
5171 nvenc_encoder_extralibs='$ldl'
5172
5173 if ! disabled network; then
5174     check_func getaddrinfo $network_extralibs
5175     check_func inet_aton $network_extralibs
5176
5177     check_type netdb.h "struct addrinfo"
5178     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5179     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5180     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5181     check_type poll.h "struct pollfd"
5182     check_type netinet/sctp.h "struct sctp_event_subscribe"
5183     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5184     check_type netinet/in.h "struct sockaddr_in6"
5185     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5186     check_type "sys/types.h sys/socket.h" socklen_t
5187
5188     # Prefer arpa/inet.h over winsock2
5189     if check_header arpa/inet.h ; then
5190         check_func closesocket
5191     elif check_header winsock2.h ; then
5192         check_func_headers winsock2.h closesocket -lws2 &&
5193             network_extralibs="-lws2" ||
5194         { check_func_headers winsock2.h closesocket -lws2_32 &&
5195             network_extralibs="-lws2_32"; } || disable winsock2_h network
5196         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5197
5198         check_type ws2tcpip.h socklen_t
5199         check_type ws2tcpip.h "struct addrinfo"
5200         check_type ws2tcpip.h "struct group_source_req"
5201         check_type ws2tcpip.h "struct ip_mreq_source"
5202         check_type ws2tcpip.h "struct ipv6_mreq"
5203         check_type winsock2.h "struct pollfd"
5204         check_struct winsock2.h "struct sockaddr" sa_len
5205         check_type ws2tcpip.h "struct sockaddr_in6"
5206         check_type ws2tcpip.h "struct sockaddr_storage"
5207     else
5208         disable network
5209     fi
5210 fi
5211
5212 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5213 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5214 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5215 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5216 check_builtin sarestart signal.h "SA_RESTART"
5217 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5218 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5219 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5220
5221 case "$custom_allocator" in
5222     jemalloc)
5223         # jemalloc by default does not use a prefix
5224         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5225     ;;
5226     tcmalloc)
5227         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5228         malloc_prefix=tc_
5229     ;;
5230 esac
5231
5232 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5233 check_func  ${malloc_prefix}memalign            && enable memalign
5234 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5235
5236 check_func  access
5237 check_func  arc4random
5238 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5239 check_func  fcntl
5240 check_func  fork
5241 check_func  gethrtime
5242 check_func  getopt
5243 check_func  getrusage
5244 check_func  gettimeofday
5245 check_func  isatty
5246 check_func  mach_absolute_time
5247 check_func  mkstemp
5248 check_func  mmap
5249 check_func  mprotect
5250 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5251 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5252 check_func  sched_getaffinity
5253 check_func  setrlimit
5254 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5255 check_func  strerror_r
5256 check_func  sysconf
5257 check_func  sysctl
5258 check_func  usleep
5259
5260 check_func_headers conio.h kbhit
5261 check_func_headers io.h setmode
5262 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5263 check_func_headers stdlib.h getenv
5264 check_func_headers sys/stat.h lstat
5265
5266 check_func_headers windows.h CoTaskMemFree -lole32
5267 check_func_headers windows.h GetProcessAffinityMask
5268 check_func_headers windows.h GetProcessTimes
5269 check_func_headers windows.h GetSystemTimeAsFileTime
5270 check_func_headers windows.h MapViewOfFile
5271 check_func_headers windows.h PeekNamedPipe
5272 check_func_headers windows.h SetConsoleTextAttribute
5273 check_func_headers windows.h SetConsoleCtrlHandler
5274 check_func_headers windows.h Sleep
5275 check_func_headers windows.h VirtualAlloc
5276 check_struct windows.h "CONDITION_VARIABLE" Ptr
5277 check_func_headers glob.h glob
5278 enabled xlib &&
5279     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5280
5281 check_header direct.h
5282 check_header dirent.h
5283 check_header dlfcn.h
5284 check_header d3d11.h
5285 check_header dxva.h
5286 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5287 check_header io.h
5288 check_header libcrystalhd/libcrystalhd_if.h
5289 check_header mach/mach_time.h
5290 check_header malloc.h
5291 check_header net/udplite.h
5292 check_header poll.h
5293 check_header sys/mman.h
5294 check_header sys/param.h
5295 check_header sys/resource.h
5296 check_header sys/select.h
5297 check_header sys/time.h
5298 check_header sys/un.h
5299 check_header termios.h
5300 check_header unistd.h
5301 check_header valgrind/valgrind.h
5302 check_header vdpau/vdpau.h
5303 check_header vdpau/vdpau_x11.h
5304 check_header VideoDecodeAcceleration/VDADecoder.h
5305 check_header VideoToolbox/VideoToolbox.h
5306 check_header windows.h
5307 check_header X11/extensions/XvMClib.h
5308 check_header asm/types.h
5309
5310 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5311 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5312 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5313 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5314
5315 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5316
5317 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5318 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5319 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5320 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5321 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5322
5323 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5324 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5325
5326 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5327
5328 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5329
5330 if ! disabled w32threads && ! enabled pthreads; then
5331     check_func_headers "windows.h process.h" _beginthreadex &&
5332         enable w32threads || disable w32threads
5333     if ! enabled w32threads && enabled winrt; then
5334         check_func_headers "windows.h" CreateThread &&
5335             enable w32threads || disable w32threads
5336     fi
5337 fi
5338
5339 # check for some common methods of building with pthread support
5340 # do this before the optional library checks as some of them require pthreads
5341 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5342     enable pthreads
5343     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5344         add_cflags -pthread
5345         add_extralibs -pthread
5346     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5347         add_cflags -pthreads
5348         add_extralibs -pthreads
5349     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5350         add_cflags -ldl -pthread
5351         add_extralibs -ldl -pthread
5352     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5353         add_extralibs -lpthreadGC2
5354     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5355         :
5356     elif ! check_func pthread_join && ! check_func pthread_create; then
5357         disable pthreads
5358     fi
5359     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5360 fi
5361
5362
5363 if enabled pthreads; then
5364   check_func pthread_cancel
5365 fi
5366
5367 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5368 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5369 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5370
5371 check_lib math.h sin -lm && LIBM="-lm"
5372 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5373
5374 atan2f_args=2
5375 copysign_args=2
5376 hypot_args=2
5377 ldexpf_args=2
5378 powf_args=2
5379
5380 for func in $MATH_FUNCS; do
5381     eval check_mathfunc $func \${${func}_args:-1}
5382 done
5383
5384 for func in $COMPLEX_FUNCS; do
5385     eval check_complexfunc $func \${${func}_args:-1}
5386 done
5387
5388 # these are off by default, so fail if requested and not available
5389 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5390 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5391                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5392 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5393                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5394                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5395 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5396 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5397 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5398 enabled gcrypt            && require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5399 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5400 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5401 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5402 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5403 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5404 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5405 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5406 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5407 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5408                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5409                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5410 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5411 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5412 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5413 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5414                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5415                                  warn "using libfdk without pkg-config"; } }
5416 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"
5417 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5418 enabled fontconfig        && enable libfontconfig
5419 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5420 enabled libfreetype       && require_libfreetype
5421 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5422 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5423 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5424                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5425                                done || die "ERROR: libgsm not found"; }
5426 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5427 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.7.1" kvazaar.h kvz_api_get
5428 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5429 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5430 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5431 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5432 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5433 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5434 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5435 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5436 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5437                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5438                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5439                                die "ERROR: libopenjpeg not found"; }
5440 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5441 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5442 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5443 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5444 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5445 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5446 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5447 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5448                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5449 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5450 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5451 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5452 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5453 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5454     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5455     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5456 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5457 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5458 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5459                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5460                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5461 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5462 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5463 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5464 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5465 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5466 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5467
5468 enabled libvpx            && {
5469     enabled libvpx_vp8_decoder && {
5470         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5471             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5472                 die "ERROR: libvpx decoder version must be >=0.9.1";
5473     }
5474     enabled libvpx_vp8_encoder && {
5475         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5476             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5477                 die "ERROR: libvpx encoder version must be >=0.9.7";
5478     }
5479     enabled libvpx_vp9_decoder && {
5480         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5481             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5482                 disable libvpx_vp9_decoder;
5483     }
5484     enabled libvpx_vp9_encoder && {
5485         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5486             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5487                 disable libvpx_vp9_encoder;
5488     }
5489     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5490         die "libvpx enabled but no supported decoders found"
5491     fi
5492 }
5493
5494 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5495 enabled libwebp           && {
5496     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5497     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5498 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5499                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5500                                  warn "using libx264 without pkg-config"; } } &&
5501                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5502                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5503                              { check_cpp_condition x264.h "X264_MPEG2" &&
5504                                enable libx262; }
5505 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5506                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5507                                die "ERROR: libx265 version must be >= 57."; }
5508 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5509 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5510 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5511 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5512 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5513 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5514                                 { ! enabled cross_compile && {
5515                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5516                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5517                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5518                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5519                                die "ERROR: mmal not found"; }
5520 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5521 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5522                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5523                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5524                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5525 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5526                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5527                                die "ERROR: openal not found"; } &&
5528                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5529                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5530 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5531                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5532                                die "ERROR: opencl not found"; } &&
5533                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5534                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5535                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5536 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5537                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5538                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5539                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5540                                die "ERROR: opengl not found."
5541                              }
5542 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5543                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5544                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5545                                die "ERROR: openssl not found"; }
5546 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5547
5548 # libdc1394 check
5549 if enabled libdc1394; then
5550     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5551         enable libdc1394_2; } ||
5552     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5553         enable libdc1394_1; } ||
5554     die "ERROR: No version of libdc1394 found "
5555 fi
5556 if ! disabled sdl; then
5557     SDL_CONFIG="${cross_prefix}sdl-config"
5558     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5559         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5560         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5561         enable sdl
5562     else
5563         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5564             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5565             sdl_libs=$("${SDL_CONFIG}" --libs)
5566             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5567             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5568             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5569             enable sdl
5570         elif enabled sdl ; then
5571             die "ERROR: SDL not found"
5572         else
5573             disable sdl
5574         fi
5575     fi
5576     if test $target_os = "mingw32"; then
5577         sdl_libs="$sdl_libs -mconsole"
5578     fi
5579 fi
5580 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5581
5582 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5583     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5584     enable securetransport; }
5585
5586 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5587                        enable schannel && add_extralibs -lSecur32; }
5588
5589 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5590 enabled makeinfo \
5591     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5592     && enable makeinfo_html || disable makeinfo_html
5593 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5594 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5595 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5596 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5597
5598 check_header linux/fb.h
5599 check_header linux/videodev.h
5600 check_header linux/videodev2.h
5601 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5602
5603 check_header sys/videoio.h
5604 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5605
5606 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5607 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5608 # w32api 3.12 had it defined wrong
5609 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5610
5611 check_type "dshow.h" IBaseFilter
5612
5613 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5614 { check_header dev/bktr/ioctl_meteor.h &&
5615   check_header dev/bktr/ioctl_bt848.h; } ||
5616 { check_header machine/ioctl_meteor.h &&
5617   check_header machine/ioctl_bt848.h; } ||
5618 { check_header dev/video/meteor/ioctl_meteor.h &&
5619   check_header dev/video/bktr/ioctl_bt848.h; } ||
5620 check_header dev/ic/bt8xx.h
5621
5622 check_header sndio.h
5623 if check_struct sys/soundcard.h audio_buf_info bytes; then
5624     enable_safe sys/soundcard.h
5625 else
5626     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5627     #include <sys/soundcard.h>
5628     audio_buf_info abc;
5629 EOF
5630 fi
5631 check_header soundcard.h
5632
5633 enabled_any alsa_indev alsa_outdev &&
5634     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5635
5636 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5637     check_func jack_port_get_latency_range -ljack
5638
5639 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5640
5641 if enabled libcdio; then
5642     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5643     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5644     die "ERROR: No usable libcdio/cdparanoia found"
5645 fi
5646
5647 enabled xlib &&
5648     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5649
5650 if ! disabled libxcb; then
5651     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5652         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5653     } && disable x11grab && enable libxcb
5654
5655 if enabled libxcb; then
5656     disabled libxcb_shm || {
5657         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5658             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5659         } && check_header sys/shm.h && enable libxcb_shm; }
5660
5661     disabled libxcb_xfixes || {
5662         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5663             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5664         } && enable libxcb_xfixes; }
5665
5666     disabled libxcb_shape || {
5667         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5668             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5669         } && enable libxcb_shape; }
5670
5671     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5672     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5673 fi
5674 fi
5675
5676 if enabled x11grab; then
5677     enabled xlib || die "ERROR: Xlib not found"
5678     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5679     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5680 fi
5681
5682 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5683
5684 enabled dxva2api_h &&
5685     check_cc <<EOF && enable dxva2api_cobj
5686 #define _WIN32_WINNT 0x0600
5687 #define COBJMACROS
5688 #include <windows.h>
5689 #include <d3d9.h>
5690 #include <dxva2api.h>
5691 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5692 EOF
5693
5694 enabled vaapi &&
5695     check_lib va/va.h vaInitialize -lva ||
5696     disable vaapi
5697
5698 enabled vaapi && enabled xlib &&
5699     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5700     enable vaapi_x11
5701
5702 enabled vdpau &&
5703     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5704     disable vdpau
5705
5706 enabled vdpau && enabled xlib &&
5707     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5708     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5709     enable vdpau_x11
5710
5711 # Funny iconv installations are not unusual, so check it after all flags have been set
5712 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5713
5714 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5715
5716 # add some useful compiler flags if supported
5717 check_cflags -Wdeclaration-after-statement
5718 check_cflags -Wall
5719 check_cflags -Wdisabled-optimization
5720 check_cflags -Wpointer-arith
5721 check_cflags -Wredundant-decls
5722 check_cflags -Wwrite-strings
5723 check_cflags -Wtype-limits
5724 check_cflags -Wundef
5725 check_cflags -Wmissing-prototypes
5726 check_cflags -Wno-pointer-to-int-cast
5727 check_cflags -Wstrict-prototypes
5728 check_cflags -Wempty-body
5729 enabled extra_warnings && check_cflags -Winline
5730 enabled extra_warnings && check_cflags -Wcast-qual
5731
5732 check_disable_warning(){
5733     warning_flag=-W${1#-Wno-}
5734     test_cflags $warning_flag && add_cflags $1
5735 }
5736
5737 check_disable_warning -Wno-parentheses
5738 check_disable_warning -Wno-switch
5739 check_disable_warning -Wno-format-zero-length
5740 check_disable_warning -Wno-pointer-sign
5741
5742 # add some linker flags
5743 check_ldflags -Wl,--warn-common
5744 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5745 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5746 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5747 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5748
5749 # add some strip flags
5750 # -wN '..@*' is more selective than -x, but not available everywhere.
5751 check_stripflags -wN \'..@*\' || check_stripflags -x
5752
5753 enabled neon_clobber_test &&
5754     check_ldflags -Wl,--wrap,avcodec_open2              \
5755                   -Wl,--wrap,avcodec_decode_audio4      \
5756                   -Wl,--wrap,avcodec_decode_video2      \
5757                   -Wl,--wrap,avcodec_decode_subtitle2   \
5758                   -Wl,--wrap,avcodec_encode_audio2      \
5759                   -Wl,--wrap,avcodec_encode_video2      \
5760                   -Wl,--wrap,avcodec_encode_subtitle    \
5761                   -Wl,--wrap,swr_convert                \
5762                   -Wl,--wrap,avresample_convert ||
5763     disable neon_clobber_test
5764
5765 enabled xmm_clobber_test &&
5766     check_ldflags -Wl,--wrap,avcodec_open2              \
5767                   -Wl,--wrap,avcodec_decode_audio4      \
5768                   -Wl,--wrap,avcodec_decode_video2      \
5769                   -Wl,--wrap,avcodec_decode_subtitle2   \
5770                   -Wl,--wrap,avcodec_encode_audio2      \
5771                   -Wl,--wrap,avcodec_encode_video2      \
5772                   -Wl,--wrap,avcodec_encode_subtitle    \
5773                   -Wl,--wrap,swr_convert                \
5774                   -Wl,--wrap,avresample_convert         \
5775                   -Wl,--wrap,sws_scale ||
5776     disable xmm_clobber_test
5777
5778 echo "X { local: *; };" > $TMPV
5779 if test_ldflags -Wl,--version-script,$TMPV; then
5780     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5781 elif test_ldflags -Wl,-M,$TMPV; then
5782     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5783 fi
5784
5785 check_cc <<EOF && enable symver_asm_label
5786 void ff_foo(void) __asm__ ("av_foo@VERSION");
5787 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5788 EOF
5789     check_cc <<EOF && enable symver_gnu_asm
5790 __asm__(".symver ff_foo,av_foo@VERSION");
5791 void ff_foo(void) {}
5792 EOF
5793
5794 if [ -z "$optflags" ]; then
5795     if enabled small; then
5796         optflags=$cflags_size
5797     elif enabled optimizations; then
5798         optflags=$cflags_speed
5799     else
5800         optflags=$cflags_noopt
5801     fi
5802 fi
5803
5804 check_optflags(){
5805     check_cflags "$@"
5806     enabled lto && check_ldflags "$@"
5807 }
5808
5809
5810 if enabled lto; then
5811     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5812     check_cflags  -flto
5813     check_ldflags -flto $cpuflags
5814     disable inline_asm_direct_symbol_refs
5815 fi
5816
5817 check_optflags $optflags
5818 check_optflags -fno-math-errno
5819 check_optflags -fno-signed-zeros
5820
5821 enabled ftrapv && check_cflags -ftrapv
5822
5823 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5824 int x;
5825 EOF
5826
5827
5828 if enabled icc; then
5829     # Just warnings, no remarks
5830     check_cflags -w1
5831     # -wd: Disable following warnings
5832     # 144, 167, 556: -Wno-pointer-sign
5833     # 188: enumerated type mixed with another type
5834     # 1292: attribute "foo" ignored
5835     # 1419: external declaration in primary source file
5836     # 10006: ignoring unknown option -fno-signed-zeros
5837     # 10148: ignoring unknown option -Wno-parentheses
5838     # 10156: ignoring option '-W'; no argument required
5839     # 13200: No EMMS instruction before call to function
5840     # 13203: No EMMS instruction before return from function
5841     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5842     # 11030: Warning unknown option --as-needed
5843     # 10156: ignoring option '-export'; no argument required
5844     check_ldflags -wd10156,11030
5845     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5846     enable ebp_available
5847     # The test above does not test linking
5848     enabled lto && disable symver_asm_label
5849     if enabled x86_32; then
5850         icc_version=$($cc -dumpversion)
5851         test ${icc_version%%.*} -ge 11 &&
5852             check_cflags -falign-stack=maintain-16-byte ||
5853             disable aligned_stack
5854     fi
5855 elif enabled ccc; then
5856     # disable some annoying warnings
5857     add_cflags -msg_disable bitnotint
5858     add_cflags -msg_disable mixfuncvoid
5859     add_cflags -msg_disable nonstandcast
5860     add_cflags -msg_disable unsupieee
5861 elif enabled gcc; then
5862     check_optflags -fno-tree-vectorize
5863     check_cflags -Werror=format-security
5864     check_cflags -Werror=implicit-function-declaration
5865     check_cflags -Werror=missing-prototypes
5866     check_cflags -Werror=return-type
5867     check_cflags -Werror=vla
5868     check_cflags -Wformat
5869     check_cflags -fdiagnostics-color=auto
5870     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5871 elif enabled llvm_gcc; then
5872     check_cflags -mllvm -stack-alignment=16
5873 elif enabled clang; then
5874     check_cflags -mllvm -stack-alignment=16
5875     check_cflags -Qunused-arguments
5876     check_cflags -Werror=implicit-function-declaration
5877     check_cflags -Werror=missing-prototypes
5878     check_cflags -Werror=return-type
5879 elif enabled cparser; then
5880     add_cflags -Wno-missing-variable-declarations
5881     add_cflags -Wno-empty-statement
5882 elif enabled armcc; then
5883     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5884     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5885     # 2523: use of inline assembly is deprecated
5886     add_cflags -W${armcc_opt},--diag_suppress=2523
5887     add_cflags -W${armcc_opt},--diag_suppress=1207
5888     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5889     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5890     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5891     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5892 elif enabled tms470; then
5893     add_cflags -pds=824 -pds=837
5894     disable inline_asm
5895 elif enabled pathscale; then
5896     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5897 elif enabled_any msvc icl; then
5898     enabled x86_32 && disable aligned_stack
5899     enabled_all x86_32 debug && add_cflags -Oy-
5900     enabled debug && add_ldflags -debug
5901     enable pragma_deprecated
5902     if enabled icl; then
5903         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5904         # (correctly) on icl 13.x.
5905         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5906             add_cflags -Qansi-alias
5907         # Some inline asm is not compilable in debug
5908         if enabled debug; then
5909             disable ebp_available
5910             disable ebx_available
5911         fi
5912     fi
5913     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5914     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5915     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5916     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5917     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5918     # MSVC 2013 and newer can handle it fine.
5919     # If this declspec fails, force including stdlib.h before the restrict redefinition
5920     # happens in config.h.
5921     if [ $_restrict != restrict ]; then
5922         check_cc <<EOF || add_cflags -FIstdlib.h
5923 __declspec($_restrict) void* foo(int);
5924 EOF
5925     fi
5926     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5927 fi
5928
5929 for pfx in "" host_; do
5930     varname=${pfx%_}cc_type
5931     eval "type=\$$varname"
5932     if [ $type = "msvc" ]; then
5933         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5934 static inline int foo(int a) { return a; }
5935 EOF
5936     fi
5937 done
5938
5939 case $as_type in
5940     clang)
5941         add_asflags -Qunused-arguments
5942     ;;
5943 esac
5944
5945 case $ld_type in
5946     clang)
5947         check_ldflags -Qunused-arguments
5948     ;;
5949 esac
5950
5951 case $target_os in
5952     osf1)
5953         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5954     ;;
5955     plan9)
5956         add_cppflags -Dmain=plan9_main
5957     ;;
5958 esac
5959
5960 enable frame_thread_encoder
5961
5962 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5963
5964 check_deps $CONFIG_LIST       \
5965            $CONFIG_EXTRA      \
5966            $HAVE_LIST         \
5967            $ALL_COMPONENTS    \
5968
5969 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"
5970
5971
5972 if test $target_os = "haiku"; then
5973     disable memalign
5974     disable posix_memalign
5975 fi
5976
5977 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5978     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5979     enable dxva2_lib
5980
5981 ! enabled_any memalign posix_memalign aligned_malloc &&
5982     enabled simd_align_16 && enable memalign_hack
5983
5984 # add_dep lib dep
5985 # -> enable ${lib}_deps_${dep}
5986 # -> add $dep to ${lib}_deps only once
5987 add_dep() {
5988     lib=$1
5989     dep=$2
5990     enabled "${lib}_deps_${dep}" && return 0
5991     enable  "${lib}_deps_${dep}"
5992     prepend "${lib}_deps" $dep
5993 }
5994
5995 # merge deps lib components
5996 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5997 merge_deps() {
5998     lib=$1
5999     shift
6000     for comp in $*; do
6001         enabled $comp || continue
6002         eval "dep=\"\$${comp}_deps\""
6003         for d in $dep; do
6004             add_dep $lib $d
6005         done
6006     done
6007 }
6008
6009 merge_deps libavfilter $FILTER_LIST
6010
6011 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6012
6013 for thread in $THREADS_LIST; do
6014     if enabled $thread; then
6015         test -n "$thread_type" &&
6016             die "ERROR: Only one thread type must be selected." ||
6017             thread_type="$thread"
6018     fi
6019 done
6020
6021 enabled zlib && add_cppflags -DZLIB_CONST
6022
6023 # conditional library dependencies, in linking order
6024 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6025 enabled aresample_filter    && prepend avfilter_deps "swresample"
6026 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6027 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6028 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6029 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6030 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6031 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6032 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6033 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6034 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6035 enabled pan_filter          && prepend avfilter_deps "swresample"
6036 enabled pp_filter           && prepend avfilter_deps "postproc"
6037 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6038 enabled resample_filter && prepend avfilter_deps "avresample"
6039 enabled sab_filter          && prepend avfilter_deps "swscale"
6040 enabled scale_filter    && prepend avfilter_deps "swscale"
6041 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6042 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6043 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6044 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6045 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6046 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6047 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6048
6049 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6050
6051 enabled opus_decoder    && prepend avcodec_deps "swresample"
6052
6053 expand_deps(){
6054     lib_deps=${1}_deps
6055     eval "deps=\$$lib_deps"
6056     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6057     unique $lib_deps
6058 }
6059
6060 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6061 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6062
6063 map 'expand_deps $v' $LIBRARY_LIST
6064
6065 echo "install prefix            $prefix"
6066 echo "source path               $source_path"
6067 echo "C compiler                $cc"
6068 echo "C library                 $libc_type"
6069 if test "$host_cc" != "$cc"; then
6070     echo "host C compiler           $host_cc"
6071     echo "host C library            $host_libc_type"
6072 fi
6073 echo "ARCH                      $arch ($cpu)"
6074 if test "$build_suffix" != ""; then
6075     echo "build suffix              $build_suffix"
6076 fi
6077 if test "$progs_suffix" != ""; then
6078     echo "progs suffix              $progs_suffix"
6079 fi
6080 if test "$extra_version" != ""; then
6081     echo "version string suffix     $extra_version"
6082 fi
6083 echo "big-endian                ${bigendian-no}"
6084 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6085 if enabled x86; then
6086     echo "${yasmexe}                      ${yasm-no}"
6087     echo "MMX enabled               ${mmx-no}"
6088     echo "MMXEXT enabled            ${mmxext-no}"
6089     echo "3DNow! enabled            ${amd3dnow-no}"
6090     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6091     echo "SSE enabled               ${sse-no}"
6092     echo "SSSE3 enabled             ${ssse3-no}"
6093     echo "AESNI enabled             ${aesni-no}"
6094     echo "AVX enabled               ${avx-no}"
6095     echo "XOP enabled               ${xop-no}"
6096     echo "FMA3 enabled              ${fma3-no}"
6097     echo "FMA4 enabled              ${fma4-no}"
6098     echo "i686 features enabled     ${i686-no}"
6099     echo "CMOV is fast              ${fast_cmov-no}"
6100     echo "EBX available             ${ebx_available-no}"
6101     echo "EBP available             ${ebp_available-no}"
6102 fi
6103 if enabled aarch64; then
6104     echo "NEON enabled              ${neon-no}"
6105     echo "VFP enabled               ${vfp-no}"
6106 fi
6107 if enabled arm; then
6108     echo "ARMv5TE enabled           ${armv5te-no}"
6109     echo "ARMv6 enabled             ${armv6-no}"
6110     echo "ARMv6T2 enabled           ${armv6t2-no}"
6111     echo "VFP enabled               ${vfp-no}"
6112     echo "NEON enabled              ${neon-no}"
6113     echo "THUMB enabled             ${thumb-no}"
6114 fi
6115 if enabled mips; then
6116     echo "MIPS FPU enabled          ${mipsfpu-no}"
6117     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6118     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6119     echo "MIPS MSA enabled          ${msa-no}"
6120     echo "LOONGSON MMI enabled      ${mmi-no}"
6121 fi
6122 if enabled ppc; then
6123     echo "AltiVec enabled           ${altivec-no}"
6124     echo "VSX enabled               ${vsx-no}"
6125     echo "POWER8 enabled            ${power8-no}"
6126     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6127     echo "dcbzl available           ${dcbzl-no}"
6128 fi
6129 echo "debug symbols             ${debug-no}"
6130 echo "strip symbols             ${stripping-no}"
6131 echo "optimize for size         ${small-no}"
6132 echo "optimizations             ${optimizations-no}"
6133 echo "static                    ${static-no}"
6134 echo "shared                    ${shared-no}"
6135 echo "postprocessing support    ${postproc-no}"
6136 echo "new filter support        ${avfilter-no}"
6137 echo "network support           ${network-no}"
6138 echo "threading support         ${thread_type-no}"
6139 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6140 echo "SDL support               ${sdl-no}"
6141 echo "opencl enabled            ${opencl-no}"
6142 echo "texi2html enabled         ${texi2html-no}"
6143 echo "perl enabled              ${perl-no}"
6144 echo "pod2man enabled           ${pod2man-no}"
6145 echo "makeinfo enabled          ${makeinfo-no}"
6146 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6147 test -n "$random_seed" &&
6148     echo "random seed               ${random_seed}"
6149 echo
6150
6151 echo "Enabled programs:"
6152 print_enabled '' $PROGRAM_LIST | print_in_columns
6153 echo
6154
6155 echo "External libraries:"
6156 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6157 echo
6158
6159 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6160     echo "Enabled ${type}s:"
6161     eval list=\$$(toupper $type)_LIST
6162     print_enabled '_*' $list | print_in_columns
6163     echo
6164 done
6165
6166 license="LGPL version 2.1 or later"
6167 if enabled nonfree; then
6168     license="nonfree and unredistributable"
6169 elif enabled gplv3; then
6170     license="GPL version 3 or later"
6171 elif enabled lgplv3; then
6172     license="LGPL version 3 or later"
6173 elif enabled gpl; then
6174     license="GPL version 2 or later"
6175 fi
6176
6177 echo "License: $license"
6178
6179 echo "Creating config.mak, config.h, and doc/config.texi..."
6180
6181 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6182
6183 enabled stripping || strip="echo skipping strip"
6184
6185 config_files="$TMPH config.mak doc/config.texi"
6186
6187 cat > config.mak <<EOF
6188 # Automatically generated by configure - do not modify!
6189 ifndef FFMPEG_CONFIG_MAK
6190 FFMPEG_CONFIG_MAK=1
6191 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6192 prefix=$prefix
6193 LIBDIR=\$(DESTDIR)$libdir
6194 SHLIBDIR=\$(DESTDIR)$shlibdir
6195 INCDIR=\$(DESTDIR)$incdir
6196 BINDIR=\$(DESTDIR)$bindir
6197 DATADIR=\$(DESTDIR)$datadir
6198 DOCDIR=\$(DESTDIR)$docdir
6199 MANDIR=\$(DESTDIR)$mandir
6200 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6201 SRC_PATH=$source_path
6202 ifndef MAIN_MAKEFILE
6203 SRC_PATH:=\$(SRC_PATH:.%=..%)
6204 endif
6205 CC_IDENT=$cc_ident
6206 ARCH=$arch
6207 INTRINSICS=$intrinsics
6208 CC=$cc
6209 CXX=$cxx
6210 AS=$as
6211 OBJCC=$objcc
6212 LD=$ld
6213 DEPCC=$dep_cc
6214 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6215 DEPAS=$as
6216 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6217 YASM=$yasmexe
6218 DEPYASM=$yasmexe
6219 AR=$ar
6220 ARFLAGS=$arflags
6221 AR_O=$ar_o
6222 RANLIB=$ranlib
6223 STRIP=$strip
6224 CP=cp -p
6225 LN_S=$ln_s
6226 CPPFLAGS=$CPPFLAGS
6227 CFLAGS=$CFLAGS
6228 CXXFLAGS=$CXXFLAGS
6229 OBJCFLAGS=$OBJCFLAGS
6230 ASFLAGS=$ASFLAGS
6231 AS_C=$AS_C
6232 AS_O=$AS_O
6233 OBJCC_C=$OBJCC_C
6234 OBJCC_E=$OBJCC_E
6235 OBJCC_O=$OBJCC_O
6236 CC_C=$CC_C
6237 CC_E=$CC_E
6238 CC_O=$CC_O
6239 CXX_C=$CXX_C
6240 CXX_O=$CXX_O
6241 LD_O=$LD_O
6242 LD_LIB=$LD_LIB
6243 LD_PATH=$LD_PATH
6244 DLLTOOL=$dlltool
6245 WINDRES=$windres
6246 DEPWINDRES=$dep_cc
6247 DOXYGEN=$doxygen
6248 LDFLAGS=$LDFLAGS
6249 LDEXEFLAGS=$LDEXEFLAGS
6250 LDLIBFLAGS=$LDLIBFLAGS
6251 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6252 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6253 YASMFLAGS=$YASMFLAGS
6254 BUILDSUF=$build_suffix
6255 PROGSSUF=$progs_suffix
6256 FULLNAME=$FULLNAME
6257 LIBPREF=$LIBPREF
6258 LIBSUF=$LIBSUF
6259 LIBNAME=$LIBNAME
6260 SLIBPREF=$SLIBPREF
6261 SLIBSUF=$SLIBSUF
6262 EXESUF=$EXESUF
6263 EXTRA_VERSION=$extra_version
6264 CCDEP=$CCDEP
6265 CXXDEP=$CXXDEP
6266 CCDEP_FLAGS=$CCDEP_FLAGS
6267 ASDEP=$ASDEP
6268 ASDEP_FLAGS=$ASDEP_FLAGS
6269 CC_DEPFLAGS=$CC_DEPFLAGS
6270 AS_DEPFLAGS=$AS_DEPFLAGS
6271 HOSTCC=$host_cc
6272 HOSTLD=$host_ld
6273 HOSTCFLAGS=$host_cflags
6274 HOSTCPPFLAGS=$host_cppflags
6275 HOSTEXESUF=$HOSTEXESUF
6276 HOSTLDFLAGS=$host_ldflags
6277 HOSTLIBS=$host_libs
6278 DEPHOSTCC=$host_cc
6279 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6280 HOSTCCDEP=$HOSTCCDEP
6281 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6282 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6283 HOSTCC_C=$HOSTCC_C
6284 HOSTCC_O=$HOSTCC_O
6285 HOSTLD_O=$HOSTLD_O
6286 TARGET_EXEC=$target_exec $target_exec_args
6287 TARGET_PATH=$target_path
6288 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6289 CFLAGS-ffplay=$sdl_cflags
6290 ZLIB=$($ldflags_filter -lz)
6291 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6292 EXTRALIBS=$extralibs
6293 COMPAT_OBJS=$compat_objs
6294 EXEOBJS=$exeobjs
6295 INSTALL=$install
6296 LIBTARGET=${LIBTARGET}
6297 SLIBNAME=${SLIBNAME}
6298 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6299 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6300 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6301 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6302 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6303 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6304 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6305 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6306 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6307 NOREDZONE_FLAGS=$noredzone_flags
6308 EOF
6309
6310 get_version(){
6311     lcname=lib${1}
6312     name=$(toupper $lcname)
6313     file=$source_path/$lcname/version.h
6314     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6315     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6316     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6317     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6318     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6319     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6320 }
6321
6322 map 'get_version $v' $LIBRARY_LIST
6323
6324 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6325
6326 print_program_libs(){
6327     eval "program_libs=\$${1}_libs"
6328     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6329 }
6330
6331 map 'print_program_libs $v' $PROGRAM_LIST
6332
6333 cat > $TMPH <<EOF
6334 /* Automatically generated by configure - do not modify! */
6335 #ifndef FFMPEG_CONFIG_H
6336 #define FFMPEG_CONFIG_H
6337 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6338 #define FFMPEG_LICENSE "$(c_escape $license)"
6339 #define CONFIG_THIS_YEAR 2015
6340 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6341 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6342 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6343 #define av_restrict $_restrict
6344 #define EXTERN_PREFIX "${extern_prefix}"
6345 #define EXTERN_ASM ${extern_prefix}
6346 #define BUILDSUF "$build_suffix"
6347 #define SLIBSUF "$SLIBSUF"
6348 #define HAVE_MMX2 HAVE_MMXEXT
6349 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6350 EOF
6351
6352 test -n "$assert_level" &&
6353     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6354
6355 test -n "$malloc_prefix" &&
6356     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6357
6358 if enabled yasm; then
6359     append config_files $TMPASM
6360     printf '' >$TMPASM
6361 fi
6362
6363 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6364
6365
6366 mkdir -p doc
6367 mkdir -p tests
6368 mkdir -p tests/api
6369 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6370
6371 print_config ARCH_   "$config_files" $ARCH_LIST
6372 print_config HAVE_   "$config_files" $HAVE_LIST
6373 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6374                                      $CONFIG_EXTRA      \
6375                                      $ALL_COMPONENTS    \
6376
6377 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6378 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6379
6380 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6381 cp_if_changed $TMPH config.h
6382 touch .config
6383
6384 enabled yasm && cp_if_changed $TMPASM config.asm
6385
6386 cat > $TMPH <<EOF
6387 /* Generated by ffconf */
6388 #ifndef AVUTIL_AVCONFIG_H
6389 #define AVUTIL_AVCONFIG_H
6390 EOF
6391
6392 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6393
6394 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6395
6396 cp_if_changed $TMPH libavutil/avconfig.h
6397
6398 if test -n "$WARNINGS"; then
6399     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6400     enabled fatal_warnings && exit 1
6401 fi
6402
6403 # build pkg-config files
6404
6405 lib_version(){
6406     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6407 }
6408
6409 pkgconfig_generate(){
6410     name=$1
6411     shortname=${name#lib}${build_suffix}
6412     comment=$2
6413     version=$3
6414     libs=$4
6415     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6416     requires=${requires%, }
6417     enabled ${name#lib} || return 0
6418     mkdir -p $name
6419     cat <<EOF > $name/$name${build_suffix}.pc
6420 prefix=$prefix
6421 exec_prefix=\${prefix}
6422 libdir=$libdir
6423 includedir=$incdir
6424
6425 Name: $name
6426 Description: $comment
6427 Version: $version
6428 Requires: $(enabled shared || echo $requires)
6429 Requires.private: $(enabled shared && echo $requires)
6430 Conflicts:
6431 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6432 Libs.private: $(enabled shared && echo $libs)
6433 Cflags: -I\${includedir}
6434 EOF
6435
6436 mkdir -p doc/examples/pc-uninstalled
6437 includedir=${source_path}
6438 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6439     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6440 prefix=
6441 exec_prefix=
6442 libdir=\${pcfiledir}/../../../$name
6443 includedir=${includedir}
6444
6445 Name: $name
6446 Description: $comment
6447 Version: $version
6448 Requires: $requires
6449 Conflicts:
6450 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6451 Cflags: -I\${includedir}
6452 EOF
6453 }
6454
6455 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6456 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6457 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6458 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6459 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6460 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6461 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6462 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6463 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"