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     mips32r6
1670     mips64r6
1671     mipsdsp
1672     mipsdspr2
1673     msa
1674 "
1675
1676 ARCH_EXT_LIST_LOONGSON="
1677     loongson2
1678     loongson3
1679     mmi
1680 "
1681
1682 ARCH_EXT_LIST_X86_SIMD="
1683     aesni
1684     amd3dnow
1685     amd3dnowext
1686     avx
1687     avx2
1688     fma3
1689     fma4
1690     mmx
1691     mmxext
1692     sse
1693     sse2
1694     sse3
1695     sse4
1696     sse42
1697     ssse3
1698     xop
1699 "
1700
1701 ARCH_EXT_LIST_PPC="
1702     altivec
1703     dcbzl
1704     ldbrx
1705     power8
1706     ppc4xx
1707     vsx
1708 "
1709
1710 ARCH_EXT_LIST_X86="
1711     $ARCH_EXT_LIST_X86_SIMD
1712     cpunop
1713     i686
1714 "
1715
1716 ARCH_EXT_LIST="
1717     $ARCH_EXT_LIST_ARM
1718     $ARCH_EXT_LIST_PPC
1719     $ARCH_EXT_LIST_X86
1720     $ARCH_EXT_LIST_MIPS
1721     $ARCH_EXT_LIST_LOONGSON
1722 "
1723
1724 ARCH_FEATURES="
1725     aligned_stack
1726     fast_64bit
1727     fast_clz
1728     fast_cmov
1729     local_aligned_8
1730     local_aligned_16
1731     local_aligned_32
1732     simd_align_16
1733 "
1734
1735 BUILTIN_LIST="
1736     atomic_cas_ptr
1737     atomic_compare_exchange
1738     machine_rw_barrier
1739     MemoryBarrier
1740     mm_empty
1741     rdtsc
1742     sarestart
1743     sync_val_compare_and_swap
1744 "
1745 HAVE_LIST_CMDLINE="
1746     inline_asm
1747     symver
1748     yasm
1749 "
1750
1751 HAVE_LIST_PUB="
1752     bigendian
1753     fast_unaligned
1754     incompatible_libav_abi
1755 "
1756
1757 HEADERS_LIST="
1758     alsa_asoundlib_h
1759     altivec_h
1760     arpa_inet_h
1761     asm_types_h
1762     cdio_paranoia_h
1763     cdio_paranoia_paranoia_h
1764     dev_bktr_ioctl_bt848_h
1765     dev_bktr_ioctl_meteor_h
1766     dev_ic_bt8xx_h
1767     dev_video_bktr_ioctl_bt848_h
1768     dev_video_meteor_ioctl_meteor_h
1769     direct_h
1770     dirent_h
1771     dlfcn_h
1772     d3d11_h
1773     dxva_h
1774     ES2_gl_h
1775     gsm_h
1776     io_h
1777     mach_mach_time_h
1778     machine_ioctl_bt848_h
1779     machine_ioctl_meteor_h
1780     malloc_h
1781     openjpeg_2_1_openjpeg_h
1782     openjpeg_2_0_openjpeg_h
1783     openjpeg_1_5_openjpeg_h
1784     OpenGL_gl3_h
1785     poll_h
1786     sndio_h
1787     soundcard_h
1788     sys_mman_h
1789     sys_param_h
1790     sys_resource_h
1791     sys_select_h
1792     sys_soundcard_h
1793     sys_time_h
1794     sys_un_h
1795     sys_videoio_h
1796     termios_h
1797     udplite_h
1798     unistd_h
1799     valgrind_valgrind_h
1800     windows_h
1801     winsock2_h
1802 "
1803
1804 INTRINSICS_LIST="
1805     intrinsics_neon
1806 "
1807
1808 COMPLEX_FUNCS="
1809     cabs
1810     cexp
1811 "
1812
1813 MATH_FUNCS="
1814     atanf
1815     atan2f
1816     cbrt
1817     cbrtf
1818     copysign
1819     cosf
1820     erf
1821     exp2
1822     exp2f
1823     expf
1824     hypot
1825     isinf
1826     isnan
1827     ldexpf
1828     llrint
1829     llrintf
1830     log2
1831     log2f
1832     log10f
1833     lrint
1834     lrintf
1835     powf
1836     rint
1837     round
1838     roundf
1839     sinf
1840     trunc
1841     truncf
1842 "
1843
1844 SYSTEM_FUNCS="
1845     access
1846     aligned_malloc
1847     arc4random
1848     clock_gettime
1849     closesocket
1850     CommandLineToArgvW
1851     CoTaskMemFree
1852     CryptGenRandom
1853     dlopen
1854     fcntl
1855     flt_lim
1856     fork
1857     getaddrinfo
1858     gethrtime
1859     getopt
1860     GetProcessAffinityMask
1861     GetProcessMemoryInfo
1862     GetProcessTimes
1863     getrusage
1864     GetSystemTimeAsFileTime
1865     gettimeofday
1866     glob
1867     glXGetProcAddress
1868     gmtime_r
1869     inet_aton
1870     isatty
1871     jack_port_get_latency_range
1872     kbhit
1873     localtime_r
1874     lstat
1875     lzo1x_999_compress
1876     mach_absolute_time
1877     MapViewOfFile
1878     memalign
1879     mkstemp
1880     mmap
1881     mprotect
1882     nanosleep
1883     PeekNamedPipe
1884     posix_memalign
1885     pthread_cancel
1886     sched_getaffinity
1887     SetConsoleTextAttribute
1888     SetConsoleCtrlHandler
1889     setmode
1890     setrlimit
1891     Sleep
1892     strerror_r
1893     sysconf
1894     sysctl
1895     usleep
1896     UTGetOSTypeFromString
1897     VirtualAlloc
1898     wglGetProcAddress
1899 "
1900
1901 TOOLCHAIN_FEATURES="
1902     as_dn_directive
1903     as_func
1904     as_object_arch
1905     asm_mod_q
1906     attribute_may_alias
1907     attribute_packed
1908     ebp_available
1909     ebx_available
1910     gnu_as
1911     gnu_windres
1912     ibm_asm
1913     inline_asm_labels
1914     inline_asm_nonlocal_labels
1915     inline_asm_direct_symbol_refs
1916     pragma_deprecated
1917     rsync_contimeout
1918     symver_asm_label
1919     symver_gnu_asm
1920     vfp_args
1921     xform_asm
1922     xmm_clobbers
1923 "
1924
1925 TYPES_LIST="
1926     CONDITION_VARIABLE_Ptr
1927     socklen_t
1928     struct_addrinfo
1929     struct_group_source_req
1930     struct_ip_mreq_source
1931     struct_ipv6_mreq
1932     struct_pollfd
1933     struct_rusage_ru_maxrss
1934     struct_sctp_event_subscribe
1935     struct_sockaddr_in6
1936     struct_sockaddr_sa_len
1937     struct_sockaddr_storage
1938     struct_stat_st_mtim_tv_nsec
1939     struct_v4l2_frmivalenum_discrete
1940 "
1941
1942 HAVE_LIST="
1943     $ARCH_EXT_LIST
1944     $(add_suffix _external $ARCH_EXT_LIST)
1945     $(add_suffix _inline   $ARCH_EXT_LIST)
1946     $ARCH_FEATURES
1947     $ATOMICS_LIST
1948     $BUILTIN_LIST
1949     $COMPLEX_FUNCS
1950     $HAVE_LIST_CMDLINE
1951     $HAVE_LIST_PUB
1952     $HEADERS_LIST
1953     $INTRINSICS_LIST
1954     $MATH_FUNCS
1955     $SYSTEM_FUNCS
1956     $THREADS_LIST
1957     $TOOLCHAIN_FEATURES
1958     $TYPES_LIST
1959     atomics_native
1960     dos_paths
1961     dxva2api_cobj
1962     dxva2_lib
1963     winrt
1964     libc_msvcrt
1965     libdc1394_1
1966     libdc1394_2
1967     makeinfo
1968     makeinfo_html
1969     perl
1970     pod2man
1971     sdl
1972     section_data_rel_ro
1973     texi2html
1974     threads
1975     vaapi_x11
1976     vdpau_x11
1977     xlib
1978 "
1979
1980 # options emitted with CONFIG_ prefix but not available on the command line
1981 CONFIG_EXTRA="
1982     aandcttables
1983     ac3dsp
1984     audio_frame_queue
1985     audiodsp
1986     blockdsp
1987     bswapdsp
1988     cabac
1989     dirac_parse
1990     dvprofile
1991     exif
1992     faandct
1993     faanidct
1994     fdctdsp
1995     flacdsp
1996     fmtconvert
1997     frame_thread_encoder
1998     g722dsp
1999     golomb
2000     gplv3
2001     h263dsp
2002     h264chroma
2003     h264dsp
2004     h264pred
2005     h264qpel
2006     hpeldsp
2007     huffman
2008     huffyuvdsp
2009     huffyuvencdsp
2010     idctdsp
2011     iirfilter
2012     imdct15
2013     intrax8
2014     ividsp
2015     jpegtables
2016     libx262
2017     lgplv3
2018     llauddsp
2019     llviddsp
2020     lpc
2021     lzf
2022     me_cmp
2023     mpeg_er
2024     mpegaudio
2025     mpegaudiodsp
2026     mpegvideo
2027     mpegvideoenc
2028     mss34dsp
2029     pixblockdsp
2030     qpeldsp
2031     qsv
2032     qsvdec
2033     qsvenc
2034     rangecoder
2035     riffdec
2036     riffenc
2037     rtpdec
2038     rtpenc_chain
2039     rv34dsp
2040     sinewin
2041     snappy
2042     startcode
2043     texturedsp
2044     texturedspenc
2045     tpeldsp
2046     videodsp
2047     vp3dsp
2048     vp56dsp
2049     vp8dsp
2050     wma_freqs
2051     wmv2dsp
2052 "
2053
2054 CMDLINE_SELECT="
2055     $ARCH_EXT_LIST
2056     $CONFIG_LIST
2057     $HAVE_LIST_CMDLINE
2058     $THREADS_LIST
2059     asm
2060     cross_compile
2061     debug
2062     extra_warnings
2063     logging
2064     lto
2065     optimizations
2066     rpath
2067     stripping
2068 "
2069
2070 PATHS_LIST="
2071     bindir
2072     datadir
2073     docdir
2074     incdir
2075     libdir
2076     mandir
2077     pkgconfigdir
2078     prefix
2079     shlibdir
2080 "
2081
2082 CMDLINE_SET="
2083     $PATHS_LIST
2084     ar
2085     arch
2086     as
2087     assert_level
2088     build_suffix
2089     cc
2090     objcc
2091     cpu
2092     cross_prefix
2093     custom_allocator
2094     cxx
2095     dep_cc
2096     doxygen
2097     env
2098     extra_version
2099     gas
2100     host_cc
2101     host_cflags
2102     host_ld
2103     host_ldflags
2104     host_libs
2105     host_os
2106     install
2107     ld
2108     logfile
2109     malloc_prefix
2110     nm
2111     optflags
2112     pkg_config
2113     pkg_config_flags
2114     progs_suffix
2115     random_seed
2116     ranlib
2117     samples
2118     strip
2119     sws_max_filter_size
2120     sysinclude
2121     sysroot
2122     target_exec
2123     target_os
2124     target_path
2125     target_samples
2126     tempprefix
2127     toolchain
2128     valgrind
2129     yasmexe
2130 "
2131
2132 CMDLINE_APPEND="
2133     extra_cflags
2134     extra_cxxflags
2135     extra_objcflags
2136     host_cppflags
2137 "
2138
2139 # code dependency declarations
2140
2141 # architecture extensions
2142
2143 armv5te_deps="arm"
2144 armv6_deps="arm"
2145 armv6t2_deps="arm"
2146 armv8_deps="aarch64"
2147 neon_deps_any="aarch64 arm"
2148 intrinsics_neon_deps="neon"
2149 vfp_deps_any="aarch64 arm"
2150 vfpv3_deps="vfp"
2151 setend_deps="arm"
2152
2153 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2154
2155 mipsfpu_deps="mips"
2156 mipsdsp_deps="mips"
2157 mipsdspr2_deps="mips"
2158 mips32r2_deps="mips"
2159 mips32r6_deps="mips"
2160 mips64r2_deps="mips"
2161 mips64r6_deps="mips"
2162 msa_deps="mips"
2163 mmi_deps="mips"
2164
2165 altivec_deps="ppc"
2166 dcbzl_deps="ppc"
2167 ldbrx_deps="ppc"
2168 ppc4xx_deps="ppc"
2169 vsx_deps="altivec"
2170 power8_deps="vsx"
2171
2172 cpunop_deps="i686"
2173 x86_64_select="i686"
2174 x86_64_suggest="fast_cmov"
2175
2176 amd3dnow_deps="mmx"
2177 amd3dnowext_deps="amd3dnow"
2178 i686_deps="x86"
2179 mmx_deps="x86"
2180 mmxext_deps="mmx"
2181 sse_deps="mmxext"
2182 sse2_deps="sse"
2183 sse3_deps="sse2"
2184 ssse3_deps="sse3"
2185 sse4_deps="ssse3"
2186 sse42_deps="sse4"
2187 aesni_deps="sse42"
2188 avx_deps="sse42"
2189 xop_deps="avx"
2190 fma3_deps="avx"
2191 fma4_deps="avx"
2192 avx2_deps="avx"
2193
2194 mmx_external_deps="yasm"
2195 mmx_inline_deps="inline_asm"
2196 mmx_suggest="mmx_external mmx_inline"
2197
2198 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2199     eval dep=\$${ext}_deps
2200     eval ${ext}_external_deps='"${dep}_external"'
2201     eval ${ext}_inline_deps='"${dep}_inline"'
2202     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2203 done
2204
2205 aligned_stack_if_any="aarch64 ppc x86"
2206 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2207 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2208 fast_unaligned_if_any="aarch64 ppc x86"
2209 simd_align_16_if_any="altivec neon sse"
2210
2211 # system capabilities
2212 symver_if_any="symver_asm_label symver_gnu_asm"
2213 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2214
2215 # threading support
2216 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2217 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2218 atomics_win32_if="MemoryBarrier"
2219 atomics_native_if_any="$ATOMICS_LIST"
2220 w32threads_deps="atomics_native"
2221 threads_if_any="$THREADS_LIST"
2222
2223 # subsystems
2224 dct_select="rdft"
2225 dirac_parse_select="golomb"
2226 error_resilience_select="me_cmp"
2227 faandct_deps="faan fdctdsp"
2228 faanidct_deps="faan idctdsp"
2229 frame_thread_encoder_deps="encoders threads"
2230 intrax8_select="error_resilience"
2231 mdct_select="fft"
2232 rdft_select="fft"
2233 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2234 mpeg_er_select="error_resilience"
2235 mpegaudio_select="mpegaudiodsp"
2236 mpegaudiodsp_select="dct"
2237 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2238 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2239 qsvdec_select="qsv"
2240 qsvenc_select="qsv"
2241
2242 # decoders / encoders
2243 aac_decoder_select="imdct15 mdct sinewin"
2244 aac_fixed_decoder_select="mdct sinewin"
2245 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2246 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2247 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2248 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2249 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2250 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2251 adpcm_g722_decoder_select="g722dsp"
2252 adpcm_g722_encoder_select="g722dsp"
2253 aic_decoder_select="golomb idctdsp"
2254 alac_encoder_select="lpc"
2255 als_decoder_select="bswapdsp"
2256 amrnb_decoder_select="lsp"
2257 amrwb_decoder_select="lsp"
2258 amv_decoder_select="sp5x_decoder exif"
2259 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2260 ape_decoder_select="bswapdsp llauddsp"
2261 apng_decoder_select="zlib"
2262 apng_encoder_select="huffyuvencdsp zlib"
2263 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2264 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2265 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2266 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2267 atrac1_decoder_select="mdct sinewin"
2268 atrac3_decoder_select="mdct"
2269 atrac3p_decoder_select="mdct sinewin"
2270 avrn_decoder_select="exif jpegtables"
2271 bink_decoder_select="blockdsp hpeldsp"
2272 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2273 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2274 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2275 cllc_decoder_select="bswapdsp"
2276 comfortnoise_encoder_select="lpc"
2277 cook_decoder_select="audiodsp mdct sinewin"
2278 cscd_decoder_select="lzo"
2279 cscd_decoder_suggest="zlib"
2280 dca_decoder_select="fmtconvert mdct"
2281 dds_decoder_select="texturedsp"
2282 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2283 dnxhd_decoder_select="blockdsp idctdsp"
2284 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2285 dvvideo_decoder_select="dvprofile idctdsp"
2286 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2287 dxa_decoder_select="zlib"
2288 dxv_decoder_select="lzf texturedsp"
2289 eac3_decoder_select="ac3_decoder"
2290 eac3_encoder_select="ac3_encoder"
2291 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2292 eatgq_decoder_select="aandcttables"
2293 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2294 exr_decoder_select="zlib"
2295 ffv1_decoder_select="golomb rangecoder"
2296 ffv1_encoder_select="rangecoder"
2297 ffvhuff_decoder_select="huffyuv_decoder"
2298 ffvhuff_encoder_select="huffyuv_encoder"
2299 fic_decoder_select="golomb"
2300 flac_decoder_select="flacdsp golomb"
2301 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2302 flashsv_decoder_select="zlib"
2303 flashsv_encoder_select="zlib"
2304 flashsv2_encoder_select="zlib"
2305 flashsv2_decoder_select="zlib"
2306 flv_decoder_select="h263_decoder"
2307 flv_encoder_select="h263_encoder"
2308 fourxm_decoder_select="blockdsp bswapdsp"
2309 fraps_decoder_select="bswapdsp huffman"
2310 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2311 g729_decoder_select="audiodsp"
2312 h261_decoder_select="mpegvideo"
2313 h261_encoder_select="aandcttables mpegvideoenc"
2314 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2315 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2316 h263i_decoder_select="h263_decoder"
2317 h263p_decoder_select="h263_decoder"
2318 h263p_encoder_select="h263_encoder"
2319 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2320 h264_decoder_suggest="error_resilience"
2321 h264_qsv_decoder_deps="libmfx"
2322 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2323 h264_qsv_encoder_deps="libmfx"
2324 h264_qsv_encoder_select="qsvenc"
2325 hap_decoder_select="snappy texturedsp"
2326 hap_encoder_deps="libsnappy"
2327 hap_encoder_select="texturedspenc"
2328 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2329 hevc_qsv_encoder_deps="libmfx"
2330 hevc_qsv_decoder_deps="libmfx"
2331 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2332 hevc_qsv_encoder_select="qsvenc"
2333 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2334 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2335 iac_decoder_select="imc_decoder"
2336 imc_decoder_select="bswapdsp fft mdct sinewin"
2337 indeo3_decoder_select="hpeldsp"
2338 indeo4_decoder_select="ividsp"
2339 indeo5_decoder_select="ividsp"
2340 interplay_video_decoder_select="hpeldsp"
2341 jpegls_decoder_select="golomb mjpeg_decoder"
2342 jpegls_encoder_select="golomb"
2343 jv_decoder_select="blockdsp"
2344 lagarith_decoder_select="huffyuvdsp"
2345 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2346 loco_decoder_select="golomb"
2347 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2348 metasound_decoder_select="lsp mdct sinewin"
2349 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2350 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2351 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2352 mjpegb_decoder_select="mjpeg_decoder"
2353 mlp_decoder_select="mlp_parser"
2354 motionpixels_decoder_select="bswapdsp"
2355 mp1_decoder_select="mpegaudio"
2356 mp1float_decoder_select="mpegaudio"
2357 mp2_decoder_select="mpegaudio"
2358 mp2float_decoder_select="mpegaudio"
2359 mp3_decoder_select="mpegaudio"
2360 mp3adu_decoder_select="mpegaudio"
2361 mp3adufloat_decoder_select="mpegaudio"
2362 mp3float_decoder_select="mpegaudio"
2363 mp3on4_decoder_select="mpegaudio"
2364 mp3on4float_decoder_select="mpegaudio"
2365 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2366 mpc8_decoder_select="mpegaudiodsp"
2367 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2368 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2369 mpegvideo_decoder_select="mpegvideo"
2370 mpeg1video_decoder_select="mpegvideo"
2371 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2372 mpeg2video_decoder_select="mpegvideo"
2373 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2374 mpeg2_qsv_decoder_deps="libmfx"
2375 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2376 mpeg2_qsv_encoder_deps="libmfx"
2377 mpeg2_qsv_encoder_select="qsvenc"
2378 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2379 mpeg4_encoder_select="h263_encoder"
2380 msa1_decoder_select="mss34dsp"
2381 msmpeg4v1_decoder_select="h263_decoder"
2382 msmpeg4v2_decoder_select="h263_decoder"
2383 msmpeg4v2_encoder_select="h263_encoder"
2384 msmpeg4v3_decoder_select="h263_decoder"
2385 msmpeg4v3_encoder_select="h263_encoder"
2386 mss2_decoder_select="vc1_decoder"
2387 mts2_decoder_select="mss34dsp"
2388 mxpeg_decoder_select="mjpeg_decoder"
2389 nellymoser_decoder_select="mdct sinewin"
2390 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2391 nuv_decoder_select="idctdsp lzo"
2392 on2avc_decoder_select="mdct"
2393 opus_decoder_deps="swresample"
2394 opus_decoder_select="imdct15"
2395 png_decoder_select="zlib"
2396 png_encoder_select="huffyuvencdsp zlib"
2397 prores_decoder_select="blockdsp idctdsp"
2398 prores_encoder_select="fdctdsp"
2399 qcelp_decoder_select="lsp"
2400 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2401 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2402 ra_144_decoder_select="audiodsp"
2403 ralf_decoder_select="golomb"
2404 rawvideo_decoder_select="bswapdsp"
2405 rscc_decoder_select="zlib"
2406 rtjpeg_decoder_select="me_cmp"
2407 rv10_decoder_select="h263_decoder"
2408 rv10_encoder_select="h263_encoder"
2409 rv20_decoder_select="h263_decoder"
2410 rv20_encoder_select="h263_encoder"
2411 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2412 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2413 screenpresso_decoder_select="zlib"
2414 shorten_decoder_select="golomb"
2415 sipr_decoder_select="lsp"
2416 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2417 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2418 sonic_decoder_select="golomb rangecoder"
2419 sonic_encoder_select="golomb rangecoder"
2420 sonic_ls_encoder_select="golomb rangecoder"
2421 sp5x_decoder_select="mjpeg_decoder"
2422 svq1_decoder_select="hpeldsp"
2423 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2424 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2425 svq3_decoder_suggest="zlib"
2426 tak_decoder_select="audiodsp"
2427 tdsc_decoder_select="zlib mjpeg_decoder"
2428 theora_decoder_select="vp3_decoder"
2429 thp_decoder_select="mjpeg_decoder"
2430 tiff_decoder_suggest="zlib lzma"
2431 tiff_encoder_suggest="zlib"
2432 truehd_decoder_select="mlp_parser"
2433 truemotion2_decoder_select="bswapdsp"
2434 truespeech_decoder_select="bswapdsp"
2435 tscc_decoder_select="zlib"
2436 twinvq_decoder_select="mdct lsp sinewin"
2437 txd_decoder_select="texturedsp"
2438 utvideo_decoder_select="bswapdsp"
2439 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2440 vble_decoder_select="huffyuvdsp"
2441 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2442 vc1image_decoder_select="vc1_decoder"
2443 vc1_qsv_decoder_deps="libmfx"
2444 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2445 vorbis_decoder_select="mdct"
2446 vorbis_encoder_select="mdct"
2447 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2448 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2449 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2450 vp6a_decoder_select="vp6_decoder"
2451 vp6f_decoder_select="vp6_decoder"
2452 vp7_decoder_select="h264pred videodsp vp8dsp"
2453 vp8_decoder_select="h264pred videodsp vp8dsp"
2454 vp9_decoder_select="videodsp vp9_parser"
2455 webp_decoder_select="vp8_decoder"
2456 wmalossless_decoder_select="llauddsp"
2457 wmapro_decoder_select="mdct sinewin wma_freqs"
2458 wmav1_decoder_select="mdct sinewin wma_freqs"
2459 wmav1_encoder_select="mdct sinewin wma_freqs"
2460 wmav2_decoder_select="mdct sinewin wma_freqs"
2461 wmav2_encoder_select="mdct sinewin wma_freqs"
2462 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2463 wmv1_decoder_select="h263_decoder"
2464 wmv1_encoder_select="h263_encoder"
2465 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2466 wmv2_encoder_select="h263_encoder wmv2dsp"
2467 wmv3_decoder_select="vc1_decoder"
2468 wmv3image_decoder_select="wmv3_decoder"
2469 zerocodec_decoder_select="zlib"
2470 zlib_decoder_select="zlib"
2471 zlib_encoder_select="zlib"
2472 zmbv_decoder_select="zlib"
2473 zmbv_encoder_select="zlib"
2474
2475 # hardware accelerators
2476 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2477 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2478 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2479 vaapi_deps="va_va_h"
2480 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2481 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2482 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2483 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2484 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2485 xvmc_deps="X11_extensions_XvMClib_h"
2486
2487 h263_vaapi_hwaccel_deps="vaapi"
2488 h263_vaapi_hwaccel_select="h263_decoder"
2489 h263_videotoolbox_hwaccel_deps="videotoolbox"
2490 h263_videotoolbox_hwaccel_select="h263_decoder"
2491 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2492 h264_d3d11va_hwaccel_deps="d3d11va"
2493 h264_d3d11va_hwaccel_select="h264_decoder"
2494 h264_dxva2_hwaccel_deps="dxva2"
2495 h264_dxva2_hwaccel_select="h264_decoder"
2496 h264_mmal_decoder_deps="mmal"
2497 h264_mmal_hwaccel_deps="mmal"
2498 h264_mmal_decoder_select="h264_decoder"
2499 h264_mmal_encoder_deps="mmal"
2500 h264_qsv_hwaccel_deps="libmfx"
2501 h264_vaapi_hwaccel_deps="vaapi"
2502 h264_vaapi_hwaccel_select="h264_decoder"
2503 h264_vda_decoder_deps="vda"
2504 h264_vda_decoder_select="h264_decoder"
2505 h264_vda_hwaccel_deps="vda"
2506 h264_vda_hwaccel_select="h264_decoder"
2507 h264_vda_old_hwaccel_deps="vda"
2508 h264_vda_old_hwaccel_select="h264_decoder"
2509 h264_vdpau_decoder_deps="vdpau"
2510 h264_vdpau_decoder_select="h264_decoder"
2511 h264_vdpau_hwaccel_deps="vdpau"
2512 h264_vdpau_hwaccel_select="h264_decoder"
2513 h264_videotoolbox_hwaccel_deps="videotoolbox"
2514 h264_videotoolbox_hwaccel_select="h264_decoder"
2515 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2516 hevc_d3d11va_hwaccel_select="hevc_decoder"
2517 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2518 hevc_dxva2_hwaccel_select="hevc_decoder"
2519 hevc_qsv_hwaccel_deps="libmfx"
2520 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2521 hevc_vaapi_hwaccel_select="hevc_decoder"
2522 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2523 hevc_vdpau_hwaccel_select="hevc_decoder"
2524 mpeg_vdpau_decoder_deps="vdpau"
2525 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2526 mpeg_xvmc_hwaccel_deps="xvmc"
2527 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2528 mpeg1_vdpau_decoder_deps="vdpau"
2529 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2530 mpeg1_vdpau_hwaccel_deps="vdpau"
2531 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2532 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2533 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2534 mpeg1_xvmc_hwaccel_deps="xvmc"
2535 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2536 mpeg2_crystalhd_decoder_select="crystalhd"
2537 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2538 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2539 mpeg2_dxva2_hwaccel_deps="dxva2"
2540 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2541 mpeg2_mmal_decoder_deps="mmal"
2542 mpeg2_mmal_hwaccel_deps="mmal"
2543 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2544 mpeg2_qsv_hwaccel_deps="libmfx"
2545 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2546 mpeg2_vaapi_hwaccel_deps="vaapi"
2547 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2548 mpeg2_vdpau_hwaccel_deps="vdpau"
2549 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2550 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2551 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2552 mpeg2_xvmc_hwaccel_deps="xvmc"
2553 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2554 mpeg4_crystalhd_decoder_select="crystalhd"
2555 mpeg4_vaapi_hwaccel_deps="vaapi"
2556 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2557 mpeg4_vdpau_decoder_deps="vdpau"
2558 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2559 mpeg4_vdpau_hwaccel_deps="vdpau"
2560 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2561 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2562 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2563 msmpeg4_crystalhd_decoder_select="crystalhd"
2564 vc1_crystalhd_decoder_select="crystalhd"
2565 vc1_d3d11va_hwaccel_deps="d3d11va"
2566 vc1_d3d11va_hwaccel_select="vc1_decoder"
2567 vc1_dxva2_hwaccel_deps="dxva2"
2568 vc1_dxva2_hwaccel_select="vc1_decoder"
2569 vc1_vaapi_hwaccel_deps="vaapi"
2570 vc1_vaapi_hwaccel_select="vc1_decoder"
2571 vc1_vdpau_decoder_deps="vdpau"
2572 vc1_vdpau_decoder_select="vc1_decoder"
2573 vc1_vdpau_hwaccel_deps="vdpau"
2574 vc1_vdpau_hwaccel_select="vc1_decoder"
2575 vc1_mmal_decoder_deps="mmal"
2576 vc1_mmal_hwaccel_deps="mmal"
2577 vc1_mmal_decoder_select="vc1_decoder"
2578 vc1_qsv_hwaccel_deps="libmfx"
2579 vc1_qsv_hwaccel_select="qsvdec_vc1"
2580 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2581 vp9_d3d11va_hwaccel_select="vp9_decoder"
2582 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2583 vp9_dxva2_hwaccel_select="vp9_decoder"
2584 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2585 vp9_vaapi_hwaccel_select="vp9_decoder"
2586 wmv3_crystalhd_decoder_select="crystalhd"
2587 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2588 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2589 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2590 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2591 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2592
2593 # parsers
2594 h264_parser_select="h264_decoder"
2595 hevc_parser_select="golomb"
2596 mpegvideo_parser_select="mpegvideo"
2597 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2598 vc1_parser_select="mpegvideo startcode vc1_decoder"
2599
2600 # bitstream_filters
2601 mjpeg2jpeg_bsf_select="jpegtables"
2602
2603 # external libraries
2604 chromaprint_muxer_deps="chromaprint"
2605 libaacplus_encoder_deps="libaacplus"
2606 libcelt_decoder_deps="libcelt"
2607 libdcadec_decoder_deps="libdcadec"
2608 libfaac_encoder_deps="libfaac"
2609 libfaac_encoder_select="audio_frame_queue"
2610 libfdk_aac_decoder_deps="libfdk_aac"
2611 libfdk_aac_encoder_deps="libfdk_aac"
2612 libfdk_aac_encoder_select="audio_frame_queue"
2613 libgme_demuxer_deps="libgme"
2614 libgsm_decoder_deps="libgsm"
2615 libgsm_encoder_deps="libgsm"
2616 libgsm_ms_decoder_deps="libgsm"
2617 libgsm_ms_encoder_deps="libgsm"
2618 libilbc_decoder_deps="libilbc"
2619 libilbc_encoder_deps="libilbc"
2620 libkvazaar_encoder_deps="libkvazaar"
2621 libmodplug_demuxer_deps="libmodplug"
2622 libmp3lame_encoder_deps="libmp3lame"
2623 libmp3lame_encoder_select="audio_frame_queue"
2624 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2625 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2626 libopencore_amrnb_encoder_select="audio_frame_queue"
2627 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2628 libopenh264_encoder_deps="libopenh264"
2629 libopenjpeg_decoder_deps="libopenjpeg"
2630 libopenjpeg_encoder_deps="libopenjpeg"
2631 libopus_decoder_deps="libopus"
2632 libopus_encoder_deps="libopus"
2633 libopus_encoder_select="audio_frame_queue"
2634 libquvi_demuxer_deps="libquvi"
2635 libschroedinger_decoder_deps="libschroedinger"
2636 libschroedinger_encoder_deps="libschroedinger"
2637 libshine_encoder_deps="libshine"
2638 libshine_encoder_select="audio_frame_queue"
2639 libspeex_decoder_deps="libspeex"
2640 libspeex_encoder_deps="libspeex"
2641 libspeex_encoder_select="audio_frame_queue"
2642 libstagefright_h264_decoder_deps="libstagefright_h264"
2643 libtheora_encoder_deps="libtheora"
2644 libtwolame_encoder_deps="libtwolame"
2645 libvo_aacenc_encoder_deps="libvo_aacenc"
2646 libvo_aacenc_encoder_select="audio_frame_queue"
2647 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2648 libvorbis_decoder_deps="libvorbis"
2649 libvorbis_encoder_deps="libvorbis"
2650 libvorbis_encoder_select="audio_frame_queue"
2651 libvpx_vp8_decoder_deps="libvpx"
2652 libvpx_vp8_encoder_deps="libvpx"
2653 libvpx_vp9_decoder_deps="libvpx"
2654 libvpx_vp9_encoder_deps="libvpx"
2655 libwavpack_encoder_deps="libwavpack"
2656 libwebp_encoder_deps="libwebp"
2657 libwebp_anim_encoder_deps="libwebp"
2658 libx262_encoder_deps="libx262"
2659 libx264_encoder_deps="libx264"
2660 libx264rgb_encoder_deps="libx264"
2661 libx264rgb_encoder_select="libx264_encoder"
2662 libx265_encoder_deps="libx265"
2663 libxavs_encoder_deps="libxavs"
2664 libxvid_encoder_deps="libxvid"
2665 libutvideo_decoder_deps="libutvideo"
2666 libutvideo_encoder_deps="libutvideo"
2667 libzvbi_teletext_decoder_deps="libzvbi"
2668 nvenc_encoder_deps="nvenc"
2669 nvenc_h264_encoder_deps="nvenc"
2670 nvenc_hevc_encoder_deps="nvenc"
2671
2672 # demuxers / muxers
2673 ac3_demuxer_select="ac3_parser"
2674 asf_demuxer_select="riffdec"
2675 asf_o_demuxer_select="riffdec"
2676 asf_muxer_select="riffenc"
2677 asf_stream_muxer_select="asf_muxer"
2678 avi_demuxer_select="riffdec exif"
2679 avi_muxer_select="riffenc"
2680 avisynth_demuxer_deps="avisynth"
2681 avisynth_demuxer_select="riffdec"
2682 caf_demuxer_select="riffdec"
2683 dash_muxer_select="mp4_muxer"
2684 dirac_demuxer_select="dirac_parser"
2685 dts_demuxer_select="dca_parser"
2686 dtshd_demuxer_select="dca_parser"
2687 dv_demuxer_select="dvprofile"
2688 dv_muxer_select="dvprofile"
2689 dxa_demuxer_select="riffdec"
2690 eac3_demuxer_select="ac3_parser"
2691 f4v_muxer_select="mov_muxer"
2692 flac_demuxer_select="flac_parser"
2693 hds_muxer_select="flv_muxer"
2694 hls_muxer_select="mpegts_muxer"
2695 image2_alias_pix_demuxer_select="image2_demuxer"
2696 image2_brender_pix_demuxer_select="image2_demuxer"
2697 ipod_muxer_select="mov_muxer"
2698 ismv_muxer_select="mov_muxer"
2699 libnut_demuxer_deps="libnut"
2700 libnut_muxer_deps="libnut"
2701 matroska_audio_muxer_select="matroska_muxer"
2702 matroska_demuxer_select="riffdec"
2703 matroska_demuxer_suggest="bzlib lzo zlib"
2704 matroska_muxer_select="riffenc"
2705 mmf_muxer_select="riffenc"
2706 mov_demuxer_select="riffdec"
2707 mov_demuxer_suggest="zlib"
2708 mov_muxer_select="riffenc rtpenc_chain"
2709 mp3_demuxer_select="mpegaudio_parser"
2710 mp4_muxer_select="mov_muxer"
2711 mpegts_muxer_select="adts_muxer latm_muxer"
2712 mpegtsraw_demuxer_select="mpegts_demuxer"
2713 mxf_d10_muxer_select="mxf_muxer"
2714 mxf_opatom_muxer_select="mxf_muxer"
2715 nut_muxer_select="riffenc"
2716 nuv_demuxer_select="riffdec"
2717 oga_muxer_select="ogg_muxer"
2718 ogg_demuxer_select="dirac_parse"
2719 opus_muxer_select="ogg_muxer"
2720 psp_muxer_select="mov_muxer"
2721 rtp_demuxer_select="sdp_demuxer"
2722 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2723 rtsp_demuxer_select="http_protocol rtpdec"
2724 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2725 sap_demuxer_select="sdp_demuxer"
2726 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2727 sdp_demuxer_select="rtpdec"
2728 smoothstreaming_muxer_select="ismv_muxer"
2729 spdif_muxer_select="aac_parser"
2730 spx_muxer_select="ogg_muxer"
2731 tak_demuxer_select="tak_parser"
2732 tg2_muxer_select="mov_muxer"
2733 tgp_muxer_select="mov_muxer"
2734 vobsub_demuxer_select="mpegps_demuxer"
2735 w64_demuxer_select="wav_demuxer"
2736 w64_muxer_select="wav_muxer"
2737 wav_demuxer_select="riffdec"
2738 wav_muxer_select="riffenc"
2739 webm_muxer_select="riffenc"
2740 wtv_demuxer_select="riffdec"
2741 wtv_muxer_select="riffenc"
2742 xmv_demuxer_select="riffdec"
2743 xwma_demuxer_select="riffdec"
2744
2745 # indevs / outdevs
2746 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2747 alsa_outdev_deps="alsa_asoundlib_h"
2748 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2749 avfoundation_indev_select="avfoundation"
2750 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2751 caca_outdev_deps="libcaca"
2752 decklink_outdev_deps="decklink pthreads"
2753 decklink_outdev_extralibs="-lstdc++"
2754 decklink_indev_deps="decklink pthreads"
2755 decklink_indev_extralibs="-lstdc++"
2756 dshow_indev_deps="IBaseFilter"
2757 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2758 dv1394_indev_deps="dv1394"
2759 dv1394_indev_select="dv_demuxer"
2760 fbdev_indev_deps="linux_fb_h"
2761 fbdev_outdev_deps="linux_fb_h"
2762 gdigrab_indev_deps="CreateDIBSection"
2763 gdigrab_indev_extralibs="-lgdi32"
2764 gdigrab_indev_select="bmp_decoder"
2765 iec61883_indev_deps="libiec61883"
2766 jack_indev_deps="jack_jack_h sem_timedwait"
2767 lavfi_indev_deps="avfilter"
2768 libcdio_indev_deps="libcdio"
2769 libdc1394_indev_deps="libdc1394"
2770 libv4l2_indev_deps="libv4l2"
2771 openal_indev_deps="openal"
2772 opengl_outdev_deps="opengl"
2773 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2774 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2775 pulse_indev_deps="libpulse"
2776 pulse_outdev_deps="libpulse"
2777 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2778 qtkit_indev_select="qtkit"
2779 sdl_outdev_deps="sdl"
2780 sndio_indev_deps="sndio_h"
2781 sndio_outdev_deps="sndio_h"
2782 v4l_indev_deps="linux_videodev_h"
2783 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2784 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2785 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2786 vfwcap_indev_extralibs="-lavicap32"
2787 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2788 xv_outdev_extralibs="-lXv -lX11 -lXext"
2789 x11grab_indev_deps="x11grab"
2790 x11grab_xcb_indev_deps="libxcb"
2791
2792 # protocols
2793 async_protocol_deps="threads"
2794 bluray_protocol_deps="libbluray"
2795 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2796 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2797 ffrtmpcrypt_protocol_select="tcp_protocol"
2798 ffrtmphttp_protocol_deps="!librtmp_protocol"
2799 ffrtmphttp_protocol_select="http_protocol"
2800 ftp_protocol_select="tcp_protocol"
2801 gopher_protocol_select="network"
2802 http_protocol_select="tcp_protocol"
2803 httpproxy_protocol_select="tcp_protocol"
2804 https_protocol_select="tls_protocol"
2805 icecast_protocol_select="http_protocol"
2806 librtmp_protocol_deps="librtmp"
2807 librtmpe_protocol_deps="librtmp"
2808 librtmps_protocol_deps="librtmp"
2809 librtmpt_protocol_deps="librtmp"
2810 librtmpte_protocol_deps="librtmp"
2811 libsmbclient_protocol_deps="libsmbclient gplv3"
2812 libssh_protocol_deps="libssh"
2813 mmsh_protocol_select="http_protocol"
2814 mmst_protocol_select="network"
2815 rtmp_protocol_deps="!librtmp_protocol"
2816 rtmp_protocol_select="tcp_protocol"
2817 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2818 rtmps_protocol_deps="!librtmp_protocol"
2819 rtmps_protocol_select="tls_protocol"
2820 rtmpt_protocol_select="ffrtmphttp_protocol"
2821 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2822 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2823 rtp_protocol_select="udp_protocol"
2824 sctp_protocol_deps="struct_sctp_event_subscribe"
2825 sctp_protocol_select="network"
2826 srtp_protocol_select="rtp_protocol"
2827 tcp_protocol_select="network"
2828 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2829 tls_gnutls_protocol_select="tcp_protocol"
2830 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2831 tls_openssl_protocol_select="tcp_protocol"
2832 tls_schannel_protocol_deps="schannel"
2833 tls_schannel_protocol_select="tcp_protocol"
2834 tls_securetransport_protocol_deps="securetransport"
2835 tls_securetransport_protocol_select="tcp_protocol"
2836 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2837 udp_protocol_select="network"
2838 udplite_protocol_select="network"
2839 unix_protocol_deps="sys_un_h"
2840 unix_protocol_select="network"
2841
2842 # filters
2843 amovie_filter_deps="avcodec avformat"
2844 aresample_filter_deps="swresample"
2845 ass_filter_deps="libass"
2846 asyncts_filter_deps="avresample"
2847 atempo_filter_deps="avcodec"
2848 atempo_filter_select="rdft"
2849 azmq_filter_deps="libzmq"
2850 blackframe_filter_deps="gpl"
2851 boxblur_filter_deps="gpl"
2852 bs2b_filter_deps="libbs2b"
2853 colormatrix_filter_deps="gpl"
2854 cover_rect_filter_deps="avcodec avformat gpl"
2855 cropdetect_filter_deps="gpl"
2856 delogo_filter_deps="gpl"
2857 deshake_filter_select="pixelutils"
2858 drawtext_filter_deps="libfreetype"
2859 ebur128_filter_deps="gpl"
2860 eq_filter_deps="gpl"
2861 fftfilt_filter_deps="avcodec"
2862 fftfilt_filter_select="rdft"
2863 flite_filter_deps="libflite"
2864 find_rect_filter_deps="avcodec avformat gpl"
2865 frei0r_filter_deps="frei0r dlopen"
2866 frei0r_src_filter_deps="frei0r dlopen"
2867 fspp_filter_deps="gpl"
2868 geq_filter_deps="gpl"
2869 histeq_filter_deps="gpl"
2870 hqdn3d_filter_deps="gpl"
2871 interlace_filter_deps="gpl"
2872 kerndeint_filter_deps="gpl"
2873 ladspa_filter_deps="ladspa dlopen"
2874 mcdeint_filter_deps="avcodec gpl"
2875 movie_filter_deps="avcodec avformat"
2876 mpdecimate_filter_deps="gpl"
2877 mpdecimate_filter_select="pixelutils"
2878 mptestsrc_filter_deps="gpl"
2879 negate_filter_deps="lut_filter"
2880 perspective_filter_deps="gpl"
2881 pp7_filter_deps="gpl"
2882 ocr_filter_deps="libtesseract"
2883 ocv_filter_deps="libopencv"
2884 owdenoise_filter_deps="gpl"
2885 pan_filter_deps="swresample"
2886 phase_filter_deps="gpl"
2887 pp_filter_deps="gpl postproc"
2888 pullup_filter_deps="gpl"
2889 removelogo_filter_deps="avcodec avformat swscale"
2890 repeatfields_filter_deps="gpl"
2891 resample_filter_deps="avresample"
2892 rubberband_filter_deps="librubberband"
2893 sab_filter_deps="gpl swscale"
2894 scale_filter_deps="swscale"
2895 scale2ref_filter_deps="swscale"
2896 select_filter_select="pixelutils"
2897 smartblur_filter_deps="gpl swscale"
2898 showcqt_filter_deps="avcodec avformat swscale"
2899 showcqt_filter_select="fft"
2900 showfreqs_filter_deps="avcodec"
2901 showfreqs_filter_select="fft"
2902 showspectrum_filter_deps="avcodec"
2903 showspectrum_filter_select="rdft"
2904 sofalizer_filter_deps="netcdf avcodec"
2905 sofalizer_filter_select="fft"
2906 spp_filter_deps="gpl avcodec"
2907 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2908 stereo3d_filter_deps="gpl"
2909 subtitles_filter_deps="avformat avcodec libass"
2910 super2xsai_filter_deps="gpl"
2911 tinterlace_filter_deps="gpl"
2912 vidstabdetect_filter_deps="libvidstab"
2913 vidstabtransform_filter_deps="libvidstab"
2914 pixfmts_super2xsai_test_deps="super2xsai_filter"
2915 tinterlace_merge_test_deps="tinterlace_filter"
2916 tinterlace_pad_test_deps="tinterlace_filter"
2917 uspp_filter_deps="gpl avcodec"
2918 zmq_filter_deps="libzmq"
2919 zoompan_filter_deps="swscale"
2920 zscale_filter_deps="libzimg"
2921
2922 # examples
2923 avio_reading="avformat avcodec avutil"
2924 avio_dir_cmd="avformat avutil"
2925 avcodec_example_deps="avcodec avutil"
2926 decoding_encoding_example_deps="avcodec avformat avutil"
2927 demuxing_decoding_example_deps="avcodec avformat avutil"
2928 extract_mvs_example_deps="avcodec avformat avutil"
2929 filter_audio_example_deps="avfilter avutil"
2930 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2931 filtering_video_example_deps="avfilter avcodec avformat avutil"
2932 metadata_example_deps="avformat avutil"
2933 muxing_example_deps="avcodec avformat avutil swscale"
2934 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2935 remuxing_example_deps="avcodec avformat avutil"
2936 resampling_audio_example_deps="avutil swresample"
2937 scaling_video_example_deps="avutil swscale"
2938 transcode_aac_example_deps="avcodec avformat swresample"
2939 transcoding_example_deps="avfilter avcodec avformat avutil"
2940
2941 # libraries, in linking order
2942 avcodec_deps="avutil"
2943 avdevice_deps="avformat avcodec avutil"
2944 avfilter_deps="avutil"
2945 avformat_deps="avcodec avutil"
2946 avresample_deps="avutil"
2947 postproc_deps="avutil gpl"
2948 swresample_deps="avutil"
2949 swscale_deps="avutil"
2950
2951 # programs
2952 ffmpeg_deps="avcodec avfilter avformat swresample"
2953 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2954                null_filter
2955                setpts_filter trim_filter"
2956 ffplay_deps="avcodec avformat swscale swresample sdl"
2957 ffplay_libs='$sdl_libs'
2958 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2959 ffprobe_deps="avcodec avformat"
2960 ffserver_deps="avformat fork sarestart"
2961 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2962
2963 # documentation
2964 podpages_deps="perl"
2965 manpages_deps="perl pod2man"
2966 htmlpages_deps="perl"
2967 htmlpages_deps_any="makeinfo_html texi2html"
2968 txtpages_deps="perl makeinfo"
2969 doc_deps_any="manpages htmlpages podpages txtpages"
2970
2971 # default parameters
2972
2973 logfile="config.log"
2974
2975 # installation paths
2976 prefix_default="/usr/local"
2977 bindir_default='${prefix}/bin'
2978 datadir_default='${prefix}/share/ffmpeg'
2979 docdir_default='${prefix}/share/doc/ffmpeg'
2980 incdir_default='${prefix}/include'
2981 libdir_default='${prefix}/lib'
2982 mandir_default='${prefix}/share/man'
2983
2984 # toolchain
2985 ar_default="ar"
2986 cc_default="gcc"
2987 cxx_default="g++"
2988 host_cc_default="gcc"
2989 cp_f="cp -f"
2990 doxygen_default="doxygen"
2991 install="install"
2992 ln_s="ln -s -f"
2993 nm_default="nm -g"
2994 objformat="elf"
2995 pkg_config_default=pkg-config
2996 ranlib_default="ranlib"
2997 strip_default="strip"
2998 yasmexe_default="yasm"
2999 windres_default="windres"
3000
3001 # OS
3002 target_os_default=$(tolower $(uname -s))
3003 host_os=$target_os_default
3004
3005 # machine
3006 if test "$target_os_default" = aix; then
3007     arch_default=$(uname -p)
3008     strip_default="strip -X32_64"
3009 else
3010     arch_default=$(uname -m)
3011 fi
3012 cpu="generic"
3013 intrinsics="none"
3014
3015 # configurable options
3016 enable $PROGRAM_LIST
3017 enable $DOCUMENT_LIST
3018 enable $EXAMPLE_LIST
3019 enable $(filter_out avresample $LIBRARY_LIST)
3020 enable stripping
3021
3022 enable asm
3023 enable debug
3024 enable doc
3025 enable faan faandct faanidct
3026 enable optimizations
3027 enable runtime_cpudetect
3028 enable safe_bitstream_reader
3029 enable static
3030 enable swscale_alpha
3031 enable valgrind_backtrace
3032
3033 sws_max_filter_size_default=256
3034 set_default sws_max_filter_size
3035
3036 # Enable hwaccels by default.
3037 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3038 enable xlib
3039
3040 # build settings
3041 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3042 LIBPREF="lib"
3043 LIBSUF=".a"
3044 FULLNAME='$(NAME)$(BUILDSUF)'
3045 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3046 SLIBPREF="lib"
3047 SLIBSUF=".so"
3048 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3049 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3050 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3051 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3052 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3053 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3054
3055 asflags_filter=echo
3056 cflags_filter=echo
3057 ldflags_filter=echo
3058
3059 AS_C='-c'
3060 AS_O='-o $@'
3061 CC_C='-c'
3062 CC_E='-E -o $@'
3063 CC_O='-o $@'
3064 CXX_C='-c'
3065 CXX_O='-o $@'
3066 OBJCC_C='-c'
3067 OBJCC_E='-E -o $@'
3068 OBJCC_O='-o $@'
3069 LD_O='-o $@'
3070 LD_LIB='-l%'
3071 LD_PATH='-L'
3072 HOSTCC_C='-c'
3073 HOSTCC_E='-E -o $@'
3074 HOSTCC_O='-o $@'
3075 HOSTLD_O='-o $@'
3076
3077 host_libs='-lm'
3078 host_cflags_filter=echo
3079 host_ldflags_filter=echo
3080
3081 target_path='$(CURDIR)'
3082
3083 # since the object filename is not given with the -MM flag, the compiler
3084 # is only able to print the basename, and we must add the path ourselves
3085 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3086 DEPFLAGS='-MM'
3087
3088 # find source path
3089 if test -f configure; then
3090     source_path=.
3091 else
3092     source_path=$(cd $(dirname "$0"); pwd)
3093     case "$source_path" in
3094         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3095     esac
3096     test -e "$source_path/config.h" &&
3097         die "Out of tree builds are impossible with config.h in source dir."
3098 fi
3099
3100 for v in "$@"; do
3101     r=${v#*=}
3102     l=${v%"$r"}
3103     r=$(sh_quote "$r")
3104     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3105 done
3106
3107 find_things(){
3108     thing=$1
3109     pattern=$2
3110     file=$source_path/$3
3111     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3112 }
3113
3114 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3115 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3116 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3117 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3118 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3119 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3120 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3121 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3122 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3123 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3124 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3125
3126 ALL_COMPONENTS="
3127     $BSF_LIST
3128     $DECODER_LIST
3129     $DEMUXER_LIST
3130     $ENCODER_LIST
3131     $FILTER_LIST
3132     $HWACCEL_LIST
3133     $INDEV_LIST
3134     $MUXER_LIST
3135     $OUTDEV_LIST
3136     $PARSER_LIST
3137     $PROTOCOL_LIST
3138 "
3139
3140 for n in $COMPONENT_LIST; do
3141     v=$(toupper ${n%s})_LIST
3142     eval enable \$$v
3143     eval ${n}_if_any="\$$v"
3144 done
3145
3146 enable $ARCH_EXT_LIST
3147
3148 die_unknown(){
3149     echo "Unknown option \"$1\"."
3150     echo "See $0 --help for available options."
3151     exit 1
3152 }
3153
3154 print_in_columns() {
3155     cols=$(expr $ncols / 24)
3156     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3157 }
3158
3159 show_list() {
3160     suffix=_$1
3161     shift
3162     echo $* | sed s/$suffix//g | print_in_columns
3163     exit 0
3164 }
3165
3166 rand_list(){
3167     IFS=', '
3168     set -- $*
3169     unset IFS
3170     for thing; do
3171         comp=${thing%:*}
3172         prob=${thing#$comp}
3173         prob=${prob#:}
3174         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3175         echo "prob ${prob:-0.5}"
3176         printf '%s\n' $comp
3177     done
3178 }
3179
3180 do_random(){
3181     action=$1
3182     shift
3183     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3184     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3185 }
3186
3187 for opt do
3188     optval="${opt#*=}"
3189     case "$opt" in
3190         --extra-ldflags=*)
3191             add_ldflags $optval
3192         ;;
3193         --extra-ldexeflags=*)
3194             add_ldexeflags $optval
3195         ;;
3196         --extra-ldlibflags=*)
3197             add_ldlibflags $optval
3198         ;;
3199         --extra-libs=*)
3200             add_extralibs $optval
3201         ;;
3202         --disable-devices)
3203             disable $INDEV_LIST $OUTDEV_LIST
3204         ;;
3205         --enable-debug=*)
3206             debuglevel="$optval"
3207         ;;
3208         --disable-programs)
3209             disable $PROGRAM_LIST
3210         ;;
3211         --disable-everything)
3212             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3213         ;;
3214         --disable-all)
3215             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3216             disable $LIBRARY_LIST $PROGRAM_LIST doc
3217             enable avutil
3218         ;;
3219         --enable-random|--disable-random)
3220             action=${opt%%-random}
3221             do_random ${action#--} $COMPONENT_LIST
3222         ;;
3223         --enable-random=*|--disable-random=*)
3224             action=${opt%%-random=*}
3225             do_random ${action#--} $optval
3226         ;;
3227         --enable-*=*|--disable-*=*)
3228             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3229             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3230             eval list=\$$(toupper $thing)_LIST
3231             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3232             list=$(filter "$name" $list)
3233             [ "$list" = "" ] && warn "Option $opt did not match anything"
3234             $action $list
3235         ;;
3236         --enable-?*|--disable-?*)
3237             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3238             if is_in $option $COMPONENT_LIST; then
3239                 test $action = disable && action=unset
3240                 eval $action \$$(toupper ${option%s})_LIST
3241             elif is_in $option $CMDLINE_SELECT; then
3242                 $action $option
3243             else
3244                 die_unknown $opt
3245             fi
3246         ;;
3247         --list-*)
3248             NAME="${opt#--list-}"
3249             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3250             NAME=${NAME%s}
3251             eval show_list $NAME \$$(toupper $NAME)_LIST
3252         ;;
3253         --help|-h) show_help
3254         ;;
3255         --fatal-warnings) enable fatal_warnings
3256         ;;
3257         *)
3258             optname="${opt%%=*}"
3259             optname="${optname#--}"
3260             optname=$(echo "$optname" | sed 's/-/_/g')
3261             if is_in $optname $CMDLINE_SET; then
3262                 eval $optname='$optval'
3263             elif is_in $optname $CMDLINE_APPEND; then
3264                 append $optname "$optval"
3265             else
3266                 die_unknown $opt
3267             fi
3268         ;;
3269     esac
3270 done
3271
3272 for e in $env; do
3273     eval "export $e"
3274 done
3275
3276 disabled logging && logfile=/dev/null
3277
3278 # Disable all the library-specific components if the library itself
3279 # is disabled, see AVCODEC_LIST and following _LIST variables.
3280
3281 disable_components(){
3282     disabled ${1} && disable $(
3283         eval components="\$$(toupper ${1})_COMPONENTS"
3284         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3285     )
3286 }
3287
3288 map 'disable_components $v' $LIBRARY_LIST
3289
3290 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3291 set >> $logfile
3292
3293 test -n "$valgrind" && toolchain="valgrind-memcheck"
3294
3295 case "$toolchain" in
3296     clang-asan)
3297         cc_default="clang"
3298         add_cflags  -fsanitize=address
3299         add_ldflags -fsanitize=address
3300     ;;
3301     clang-tsan)
3302         cc_default="clang"
3303         add_cflags  -fsanitize=thread -pie
3304         add_ldflags -fsanitize=thread -pie
3305     ;;
3306     clang-usan)
3307         cc_default="clang"
3308         add_cflags  -fsanitize=undefined
3309         add_ldflags -fsanitize=undefined
3310     ;;
3311     gcc-asan)
3312         cc_default="gcc"
3313         add_cflags  -fsanitize=address
3314         add_ldflags -fsanitize=address
3315     ;;
3316     gcc-tsan)
3317         cc_default="gcc"
3318         add_cflags  -fsanitize=thread -pie -fPIC
3319         add_ldflags -fsanitize=thread -pie -fPIC
3320     ;;
3321     gcc-usan)
3322         cc_default="gcc"
3323         add_cflags  -fsanitize=undefined
3324         add_ldflags -fsanitize=undefined
3325     ;;
3326     valgrind-massif)
3327         target_exec_default=${valgrind:-"valgrind"}
3328         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3329     ;;
3330     valgrind-memcheck)
3331         target_exec_default=${valgrind:-"valgrind"}
3332         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3333     ;;
3334     msvc)
3335         # Check whether the current MSVC version needs the C99 converter.
3336         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3337         # support enough of C99 to build ffmpeg. Default to the new
3338         # behaviour if the regexp was unable to match anything, since this
3339         # successfully parses the version number of existing supported
3340         # versions that require the converter (MSVC 2010 and 2012).
3341         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3342         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3343             cc_default="cl"
3344         else
3345             cc_default="c99wrap cl"
3346         fi
3347         ld_default="$source_path/compat/windows/mslink"
3348         nm_default="dumpbin -symbols"
3349         ar_default="lib"
3350         case "$arch" in
3351         arm*)
3352             as_default="armasm"
3353             ;;
3354         esac
3355         target_os_default="win32"
3356         # Use a relative path for TMPDIR. This makes sure all the
3357         # ffconf temp files are written with a relative path, avoiding
3358         # issues with msys/win32 path conversion for MSVC parameters
3359         # such as -Fo<file> or -out:<file>.
3360         TMPDIR=.
3361     ;;
3362     icl)
3363         cc_default="icl"
3364         ld_default="xilink"
3365         nm_default="dumpbin -symbols"
3366         ar_default="xilib"
3367         target_os_default="win32"
3368         TMPDIR=.
3369     ;;
3370     gcov)
3371         add_cflags  -fprofile-arcs -ftest-coverage
3372         add_ldflags -fprofile-arcs -ftest-coverage
3373     ;;
3374     hardened)
3375         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3376         add_cflags   -fno-strict-overflow -fstack-protector-all
3377         add_ldflags  -Wl,-z,relro -Wl,-z,now
3378     ;;
3379     ?*)
3380         die "Unknown toolchain $toolchain"
3381     ;;
3382 esac
3383
3384 test -n "$cross_prefix" && enable cross_compile
3385
3386 if enabled cross_compile; then
3387     test -n "$arch" && test -n "$target_os" ||
3388         die "Must specify target arch and OS when cross-compiling"
3389 fi
3390
3391 ar_default="${cross_prefix}${ar_default}"
3392 cc_default="${cross_prefix}${cc_default}"
3393 cxx_default="${cross_prefix}${cxx_default}"
3394 nm_default="${cross_prefix}${nm_default}"
3395 pkg_config_default="${cross_prefix}${pkg_config_default}"
3396 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3397     ranlib_default="${cross_prefix}${ranlib_default} -D"
3398 else
3399     ranlib_default="${cross_prefix}${ranlib_default}"
3400 fi
3401 strip_default="${cross_prefix}${strip_default}"
3402 windres_default="${cross_prefix}${windres_default}"
3403
3404 sysinclude_default="${sysroot}/usr/include"
3405
3406 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3407     target_exec target_os yasmexe
3408 enabled cross_compile || host_cc_default=$cc
3409 set_default host_cc
3410
3411 pkg_config_fail_message=""
3412 if ! $pkg_config --version >/dev/null 2>&1; then
3413     warn "$pkg_config not found, library detection may fail."
3414     pkg_config=false
3415 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3416     pkg_config_fail_message="
3417 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3418 fi
3419
3420 if test $doxygen != $doxygen_default && \
3421   ! $doxygen --version >/dev/null 2>&1; then
3422     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3423 fi
3424
3425 exesuf() {
3426     case $1 in
3427         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3428     esac
3429 }
3430
3431 EXESUF=$(exesuf $target_os)
3432 HOSTEXESUF=$(exesuf $host_os)
3433
3434 # set temporary file name
3435 : ${TMPDIR:=$TEMPDIR}
3436 : ${TMPDIR:=$TMP}
3437 : ${TMPDIR:=/tmp}
3438
3439 if [ -n "$tempprefix" ] ; then
3440     mktemp(){
3441         echo $tempprefix.${HOSTNAME}.${UID}
3442     }
3443 elif ! check_cmd mktemp -u XXXXXX; then
3444     # simple replacement for missing mktemp
3445     # NOT SAFE FOR GENERAL USE
3446     mktemp(){
3447         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3448     }
3449 fi
3450
3451 tmpfile(){
3452     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3453         (set -C; exec > $tmp) 2>/dev/null ||
3454         die "Unable to create temporary file in $TMPDIR."
3455     append TMPFILES $tmp
3456     eval $1=$tmp
3457 }
3458
3459 trap 'rm -f -- $TMPFILES' EXIT
3460
3461 tmpfile TMPASM .asm
3462 tmpfile TMPC   .c
3463 tmpfile TMPCPP .cpp
3464 tmpfile TMPE   $EXESUF
3465 tmpfile TMPH   .h
3466 tmpfile TMPM   .m
3467 tmpfile TMPO   .o
3468 tmpfile TMPS   .S
3469 tmpfile TMPSH  .sh
3470 tmpfile TMPV   .ver
3471
3472 unset -f mktemp
3473
3474 chmod +x $TMPE
3475
3476 # make sure we can execute files in $TMPDIR
3477 cat > $TMPSH 2>> $logfile <<EOF
3478 #! /bin/sh
3479 EOF
3480 chmod +x $TMPSH >> $logfile 2>&1
3481 if ! $TMPSH >> $logfile 2>&1; then
3482     cat <<EOF
3483 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3484 variable to another directory and make sure that it is not mounted noexec.
3485 EOF
3486     die "Sanity test failed."
3487 fi
3488
3489 armasm_flags(){
3490     for flag; do
3491         case $flag in
3492             # Filter out MSVC cl.exe options from cflags that shouldn't
3493             # be passed to gas-preprocessor
3494             -M[TD]*)                                            ;;
3495             *)                  echo $flag                      ;;
3496         esac
3497    done
3498 }
3499
3500 ccc_flags(){
3501     for flag; do
3502         case $flag in
3503             -std=c99)           echo -c99                       ;;
3504             -mcpu=*)            echo -arch ${flag#*=}           ;;
3505             -mieee)             echo -ieee                      ;;
3506             -O*|-fast)          echo $flag                      ;;
3507             -fno-math-errno)    echo -assume nomath_errno       ;;
3508             -g)                 echo -g3                        ;;
3509             -Wall)              echo -msg_enable level2         ;;
3510             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3511             -Wl,*)              echo $flag                      ;;
3512             -f*|-W*)                                            ;;
3513             *)                  echo $flag                      ;;
3514         esac
3515    done
3516 }
3517
3518 cparser_flags(){
3519     for flag; do
3520         case $flag in
3521             -Wno-switch)             echo -Wno-switch-enum ;;
3522             -Wno-format-zero-length) ;;
3523             -Wdisabled-optimization) ;;
3524             -Wno-pointer-sign)       echo -Wno-other ;;
3525             *)                       echo $flag ;;
3526         esac
3527     done
3528 }
3529
3530 msvc_common_flags(){
3531     for flag; do
3532         case $flag in
3533             # In addition to specifying certain flags under the compiler
3534             # specific filters, they must be specified here as well or else the
3535             # generic catch all at the bottom will print the original flag.
3536             -Wall)                ;;
3537             -std=c99)             ;;
3538             # Common flags
3539             -fomit-frame-pointer) ;;
3540             -g)                   echo -Z7 ;;
3541             -fno-math-errno)      ;;
3542             -fno-common)          ;;
3543             -fno-signed-zeros)    ;;
3544             -fPIC)                ;;
3545             -mthumb)              ;;
3546             -march=*)             ;;
3547             -lz)                  echo zlib.lib ;;
3548             -lavifil32)           echo vfw32.lib ;;
3549             -lavicap32)           echo vfw32.lib user32.lib ;;
3550             -l*)                  echo ${flag#-l}.lib ;;
3551             -LARGEADDRESSAWARE)   echo $flag ;;
3552             -L*)                  echo -libpath:${flag#-L} ;;
3553             *)                    echo $flag ;;
3554         esac
3555     done
3556 }
3557
3558 msvc_flags(){
3559     msvc_common_flags "$@"
3560     for flag; do
3561         case $flag in
3562             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3563                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3564                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3565                                        -wd4307 \
3566                                        -wd4273 -wd4554 -wd4701 ;;
3567         esac
3568     done
3569 }
3570
3571 icl_flags(){
3572     msvc_common_flags "$@"
3573     for flag; do
3574         case $flag in
3575             # Despite what Intel's documentation says -Wall, which is supported
3576             # on Windows, does enable remarks so disable them here.
3577             -Wall)                echo $flag -Qdiag-disable:remark ;;
3578             -std=c99)             echo -Qstd=c99 ;;
3579             -flto)                echo -ipo ;;
3580         esac
3581     done
3582 }
3583
3584 icc_flags(){
3585     for flag; do
3586         case $flag in
3587             -flto)                echo -ipo ;;
3588             *)                    echo $flag ;;
3589         esac
3590     done
3591 }
3592
3593 pgi_flags(){
3594     for flag; do
3595         case $flag in
3596             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3597             -fomit-frame-pointer) echo -Mnoframe ;;
3598             -g)                   echo -gopt ;;
3599             *)                    echo $flag ;;
3600         esac
3601     done
3602 }
3603
3604 suncc_flags(){
3605     for flag; do
3606         case $flag in
3607             -march=*|-mcpu=*)
3608                 case "${flag#*=}" in
3609                     native)                   echo -xtarget=native       ;;
3610                     v9|niagara)               echo -xarch=sparc          ;;
3611                     ultrasparc)               echo -xarch=sparcvis       ;;
3612                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3613                     i586|pentium)             echo -xchip=pentium        ;;
3614                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3615                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3616                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3617                     pentium4*)          echo -xtarget=pentium4           ;;
3618                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3619                     *-sse3)             echo -xarch=sse3                 ;;
3620                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3621                     bonnell)                   echo -xarch=ssse3         ;;
3622                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3623                     westmere)                  echo -xtarget=westmere    ;;
3624                     silvermont)                echo -xarch=sse4_2        ;;
3625                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3626                     core-avx*|ivybridge|haswell|broadwell)
3627                                                echo -xarch=avx           ;;
3628                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3629                     btver1)                    echo -xarch=amdsse4a      ;;
3630                     btver2|bdver*)             echo -xarch=avx           ;;
3631                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3632                     k8|opteron|athlon64|athlon-fx)
3633                                                echo -xarch=sse2a         ;;
3634                     athlon*)                   echo -xarch=pentium_proa  ;;
3635                 esac
3636                 ;;
3637             -std=c99)             echo -xc99              ;;
3638             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3639             -fPIC)                echo -KPIC -xcode=pic32 ;;
3640             -W*,*)                echo $flag              ;;
3641             -f*-*|-W*|-mimpure-text)                      ;;
3642             -shared)              echo -G                 ;;
3643             *)                    echo $flag              ;;
3644         esac
3645     done
3646 }
3647
3648 tms470_flags(){
3649     for flag; do
3650         case $flag in
3651             -march=*|-mcpu=*)
3652                 case "${flag#*=}" in
3653                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3654                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3655                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3656                     armv6*|arm11*)          echo -mv=6   ;;
3657                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3658                                             echo -mv=5e  ;;
3659                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3660                 esac
3661                 ;;
3662             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3663             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3664             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3665             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3666             -msoft-float)   echo --float_support=vfplib       ;;
3667             -O[0-3]|-mf=*)  echo $flag                        ;;
3668             -g)             echo -g -mn                       ;;
3669             -pds=*)         echo $flag                        ;;
3670             -D*|-I*)        echo $flag                        ;;
3671             --gcc|--abi=*)  echo $flag                        ;;
3672             -me)            echo $flag                        ;;
3673         esac
3674     done
3675 }
3676
3677 probe_cc(){
3678     pfx=$1
3679     _cc=$2
3680     first=$3
3681
3682     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3683     unset _ld_o _ldflags _ld_lib _ld_path
3684     unset _depflags _DEPCMD _DEPFLAGS
3685     _flags_filter=echo
3686
3687     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3688         true # no-op to avoid reading stdin in following checks
3689     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3690         _type=llvm_gcc
3691         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3692         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3693         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3694         _cflags_speed='-O3'
3695         _cflags_size='-Os'
3696     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3697         _type=gcc
3698         gcc_version=$($_cc --version | head -n1)
3699         gcc_basever=$($_cc -dumpversion)
3700         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3701         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3702         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3703         case $gcc_basever in
3704             2) ;;
3705             2.*) ;;
3706             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3707         esac
3708         if [ "$first" = true ]; then
3709             case $gcc_basever in
3710                 4.2*)
3711                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3712             esac
3713         fi
3714         _cflags_speed='-O3'
3715         _cflags_size='-Os'
3716     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3717         _type=icc
3718         _ident=$($_cc --version | head -n1)
3719         _depflags='-MMD'
3720         _cflags_speed='-O3'
3721         _cflags_size='-Os'
3722         _cflags_noopt='-O1'
3723         _flags_filter=icc_flags
3724     elif $_cc -v 2>&1 | grep -q xlc; then
3725         _type=xlc
3726         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3727         _cflags_speed='-O5'
3728         _cflags_size='-O5 -qcompact'
3729     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3730         _type=ccc
3731         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3732         _DEPFLAGS='-M'
3733         _cflags_speed='-fast'
3734         _cflags_size='-O1'
3735         _flags_filter=ccc_flags
3736     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3737         test -d "$sysroot" || die "No valid sysroot specified."
3738         _type=armcc
3739         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3740         armcc_conf="$PWD/armcc.conf"
3741         $_cc --arm_linux_configure                 \
3742              --arm_linux_config_file="$armcc_conf" \
3743              --configure_sysroot="$sysroot"        \
3744              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3745              die "Error creating armcc configuration file."
3746         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3747         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3748         as_default="${cross_prefix}gcc"
3749         _depflags='-MMD'
3750         _cflags_speed='-O3'
3751         _cflags_size='-Os'
3752     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3753         _type=tms470
3754         _ident=$($_cc -version | head -n1 | tr -s ' ')
3755         _flags='--gcc --abi=eabi -me'
3756         _cc_e='-ppl -fe=$@'
3757         _cc_o='-fe=$@'
3758         _depflags='-ppa -ppd=$(@:.o=.d)'
3759         _cflags_speed='-O3 -mf=5'
3760         _cflags_size='-O3 -mf=2'
3761         _flags_filter=tms470_flags
3762     elif $_cc -v 2>&1 | grep -q clang; then
3763         _type=clang
3764         _ident=$($_cc --version 2>/dev/null | head -n1)
3765         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3766         _cflags_speed='-O3'
3767         _cflags_size='-Os'
3768     elif $_cc -V 2>&1 | grep -q Sun; then
3769         _type=suncc
3770         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3771         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3772         _DEPFLAGS='-xM1 -xc99'
3773         _ldflags='-std=c99'
3774         _cflags_speed='-O5'
3775         _cflags_size='-O5 -xspace'
3776         _flags_filter=suncc_flags
3777     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3778         _type=pathscale
3779         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3780         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3781         _cflags_speed='-O2'
3782         _cflags_size='-Os'
3783         _flags_filter='filter_out -Wdisabled-optimization'
3784     elif $_cc -v 2>&1 | grep -q Open64; then
3785         _type=open64
3786         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3787         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3788         _cflags_speed='-O2'
3789         _cflags_size='-Os'
3790         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3791     elif $_cc -V 2>&1 | grep -q Portland; then
3792         _type=pgi
3793         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3794         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3795         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3796         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3797         _cflags_noopt="-O"
3798         _flags_filter=pgi_flags
3799     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3800         _type=armasm
3801         _ident=$($_cc | head -n1)
3802         # 4509: "This form of conditional instruction is deprecated"
3803         _flags="-nologo -ignore 4509"
3804         _flags_filter=armasm_flags
3805     elif $_cc 2>&1 | grep -q Intel; then
3806         _type=icl
3807         _ident=$($_cc 2>&1 | head -n1)
3808         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3809         # Not only is O3 broken on 13.x+ but it is slower on all previous
3810         # versions (tested) as well.
3811         _cflags_speed="-O2"
3812         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3813         if $_cc 2>&1 | grep -q Linker; then
3814             _ld_o='-out:$@'
3815         else
3816             _ld_o='-Fe$@'
3817         fi
3818         _cc_o='-Fo$@'
3819         _cc_e='-P'
3820         _flags_filter=icl_flags
3821         _ld_lib='lib%.a'
3822         _ld_path='-libpath:'
3823         # -Qdiag-error to make icl error when seeing certain unknown arguments
3824         _flags='-nologo -Qdiag-error:4044,10157'
3825         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3826         # with MSVC which enables it by default.
3827         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3828         disable stripping
3829     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3830         _type=msvc
3831         _ident=$($_cc 2>&1 | head -n1)
3832         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3833         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3834         _cflags_speed="-O2"
3835         _cflags_size="-O1"
3836         if $_cc -nologo- 2>&1 | grep -q Linker; then
3837             _ld_o='-out:$@'
3838         else
3839             _ld_o='-Fe$@'
3840         fi
3841         _cc_o='-Fo$@'
3842         _cc_e='-P -Fi$@'
3843         _flags_filter=msvc_flags
3844         _ld_lib='lib%.a'
3845         _ld_path='-libpath:'
3846         _flags='-nologo'
3847         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3848         disable stripping
3849     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3850         _type=cparser
3851         _ident=$($_cc --version | head -n1)
3852         _depflags='-MMD'
3853         _cflags_speed='-O4'
3854         _cflags_size='-O2'
3855         _flags_filter=cparser_flags
3856     fi
3857
3858     eval ${pfx}_type=\$_type
3859     eval ${pfx}_ident=\$_ident
3860 }
3861
3862 set_ccvars(){
3863     eval ${1}_C=\${_cc_c-\${${1}_C}}
3864     eval ${1}_E=\${_cc_e-\${${1}_E}}
3865     eval ${1}_O=\${_cc_o-\${${1}_O}}
3866
3867     if [ -n "$_depflags" ]; then
3868         eval ${1}_DEPFLAGS=\$_depflags
3869     else
3870         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3871         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3872         eval DEP${1}FLAGS=\$_flags
3873     fi
3874 }
3875
3876 probe_cc cc "$cc" "true"
3877 cflags_filter=$_flags_filter
3878 cflags_speed=$_cflags_speed
3879 cflags_size=$_cflags_size
3880 cflags_noopt=$_cflags_noopt
3881 add_cflags $_flags $_cflags
3882 cc_ldflags=$_ldflags
3883 set_ccvars CC
3884
3885 probe_cc hostcc "$host_cc"
3886 host_cflags_filter=$_flags_filter
3887 add_host_cflags  $_flags $_cflags
3888 set_ccvars HOSTCC
3889
3890 test -n "$cc_type" && enable $cc_type ||
3891     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3892
3893 : ${as_default:=$cc}
3894 : ${objcc_default:=$cc}
3895 : ${dep_cc_default:=$cc}
3896 : ${ld_default:=$cc}
3897 : ${host_ld_default:=$host_cc}
3898 set_default ar as objcc dep_cc ld host_ld windres
3899
3900 probe_cc as "$as"
3901 asflags_filter=$_flags_filter
3902 add_asflags $_flags $_cflags
3903 set_ccvars AS
3904
3905 probe_cc objcc "$objcc"
3906 objcflags_filter=$_flags_filter
3907 add_objcflags $_flags $_cflags
3908 set_ccvars OBJC
3909
3910 probe_cc ld "$ld"
3911 ldflags_filter=$_flags_filter
3912 add_ldflags $_flags $_ldflags
3913 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3914 LD_O=${_ld_o-$LD_O}
3915 LD_LIB=${_ld_lib-$LD_LIB}
3916 LD_PATH=${_ld_path-$LD_PATH}
3917
3918 probe_cc hostld "$host_ld"
3919 host_ldflags_filter=$_flags_filter
3920 add_host_ldflags $_flags $_ldflags
3921 HOSTLD_O=${_ld_o-$HOSTLD_O}
3922
3923 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3924     probe_cc depcc "$dep_cc"
3925     CCDEP=${_DEPCMD:-$DEPCMD}
3926     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3927     DEPCCFLAGS=$_flags
3928 fi
3929
3930 if $ar 2>&1 | grep -q Microsoft; then
3931     arflags="-nologo"
3932     ar_o='-out:$@'
3933 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3934     arflags="rq"
3935     ar_o='$@'
3936 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3937     arflags='-Xany -r -c'
3938     ar_o='$@'
3939 elif $ar 2>&1 | grep -q "\[D\] "; then
3940     arflags="rcD"
3941     ar_o='$@'
3942 else
3943     arflags="rc"
3944     ar_o='$@'
3945 fi
3946
3947 add_cflags $extra_cflags
3948 add_cxxflags $extra_cxxflags
3949 add_objcflags $extra_objcflags
3950 add_asflags $extra_cflags
3951
3952 if test -n "$sysroot"; then
3953     case "$cc_type" in
3954         gcc|llvm_gcc|clang)
3955             add_cppflags --sysroot="$sysroot"
3956             add_ldflags --sysroot="$sysroot"
3957 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3958             add_cppflags -isysroot "$sysroot"
3959             add_ldflags -isysroot "$sysroot"
3960         ;;
3961         tms470)
3962             add_cppflags -I"$sysinclude"
3963             add_ldflags  --sysroot="$sysroot"
3964         ;;
3965     esac
3966 fi
3967
3968 if test "$cpu" = host; then
3969     enabled cross_compile &&
3970         die "--cpu=host makes no sense when cross-compiling."
3971
3972     case "$cc_type" in
3973         gcc|llvm_gcc)
3974             check_native(){
3975                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3976                 sed -n "/cc1.*$1=/{
3977                             s/.*$1=\\([^ ]*\\).*/\\1/
3978                             p
3979                             q
3980                         }" $TMPE
3981             }
3982             cpu=$(check_native -march || check_native -mcpu)
3983         ;;
3984     esac
3985
3986     test "${cpu:-host}" = host &&
3987         die "--cpu=host not supported with compiler $cc"
3988 fi
3989
3990 # Deal with common $arch aliases
3991 case "$arch" in
3992     aarch64|arm64)
3993         arch="aarch64"
3994     ;;
3995     arm*|iPad*|iPhone*)
3996         arch="arm"
3997     ;;
3998     mips*|IP*)
3999         arch="mips"
4000     ;;
4001     parisc*|hppa*)
4002         arch="parisc"
4003     ;;
4004     "Power Macintosh"|ppc*|powerpc*)
4005         arch="ppc"
4006     ;;
4007     s390|s390x)
4008         arch="s390"
4009     ;;
4010     sh4|sh)
4011         arch="sh4"
4012     ;;
4013     sun4u|sparc*)
4014         arch="sparc"
4015     ;;
4016     tilegx|tile-gx)
4017         arch="tilegx"
4018     ;;
4019     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4020         arch="x86"
4021     ;;
4022 esac
4023
4024 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4025 enable $arch
4026
4027 # Add processor-specific flags
4028 if enabled aarch64; then
4029
4030     case $cpu in
4031         armv*)
4032             cpuflags="-march=$cpu"
4033         ;;
4034         *)
4035             cpuflags="-mcpu=$cpu"
4036         ;;
4037     esac
4038
4039 elif enabled alpha; then
4040
4041     cpuflags="-mcpu=$cpu"
4042
4043 elif enabled arm; then
4044
4045     check_arm_arch() {
4046         check_cpp_condition stddef.h \
4047             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4048             $cpuflags
4049     }
4050
4051     probe_arm_arch() {
4052         if   check_arm_arch 4;        then echo armv4;
4053         elif check_arm_arch 4T;       then echo armv4t;
4054         elif check_arm_arch 5;        then echo armv5;
4055         elif check_arm_arch 5E;       then echo armv5e;
4056         elif check_arm_arch 5T;       then echo armv5t;
4057         elif check_arm_arch 5TE;      then echo armv5te;
4058         elif check_arm_arch 5TEJ;     then echo armv5te;
4059         elif check_arm_arch 6;        then echo armv6;
4060         elif check_arm_arch 6J;       then echo armv6j;
4061         elif check_arm_arch 6K;       then echo armv6k;
4062         elif check_arm_arch 6Z;       then echo armv6z;
4063         elif check_arm_arch 6ZK;      then echo armv6zk;
4064         elif check_arm_arch 6T2;      then echo armv6t2;
4065         elif check_arm_arch 7;        then echo armv7;
4066         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4067         elif check_arm_arch 7S;       then echo armv7-a;
4068         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4069         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4070         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4071         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4072         fi
4073     }
4074
4075     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4076
4077     case $cpu in
4078         armv*)
4079             cpuflags="-march=$cpu"
4080             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4081         ;;
4082         *)
4083             cpuflags="-mcpu=$cpu"
4084             case $cpu in
4085                 cortex-a*)                               subarch=armv7a  ;;
4086                 cortex-r*)                               subarch=armv7r  ;;
4087                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4088                 arm11*)                                  subarch=armv6   ;;
4089                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4090                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4091                 *)                             subarch=$(probe_arm_arch) ;;
4092             esac
4093         ;;
4094     esac
4095
4096     case "$subarch" in
4097         armv5t*)    enable fast_clz                ;;
4098         armv[6-8]*)
4099             enable fast_clz
4100             disabled fast_unaligned || enable fast_unaligned
4101             ;;
4102     esac
4103
4104 elif enabled avr32; then
4105
4106     case $cpu in
4107         ap7[02]0[0-2])
4108             subarch="avr32_ap"
4109             cpuflags="-mpart=$cpu"
4110         ;;
4111         ap)
4112             subarch="avr32_ap"
4113             cpuflags="-march=$cpu"
4114         ;;
4115         uc3[ab]*)
4116             subarch="avr32_uc"
4117             cpuflags="-mcpu=$cpu"
4118         ;;
4119         uc)
4120             subarch="avr32_uc"
4121             cpuflags="-march=$cpu"
4122         ;;
4123     esac
4124
4125 elif enabled bfin; then
4126
4127     cpuflags="-mcpu=$cpu"
4128
4129 elif enabled mips; then
4130
4131     cpuflags="-march=$cpu"
4132
4133     case $cpu in
4134         24kc)
4135             disable mips32r6
4136             disable mips64r2
4137             disable mips64r6
4138             disable mipsfpu
4139             disable mipsdsp
4140             disable mipsdspr2
4141             disable msa
4142         ;;
4143         24kf*)
4144             disable mips32r6
4145             disable mips64r2
4146             disable mips64r6
4147             disable mipsdsp
4148             disable mipsdspr2
4149             disable msa
4150         ;;
4151         24kec|34kc|1004kc)
4152             disable mips32r6
4153             disable mips64r2
4154             disable mips64r6
4155             disable mipsfpu
4156             disable mipsdspr2
4157             disable msa
4158         ;;
4159         24kef*|34kf*|1004kf*)
4160             disable mips32r6
4161             disable mips64r2
4162             disable mips64r6
4163             disable mipsdspr2
4164             disable msa
4165         ;;
4166         74kc)
4167             disable mips32r6
4168             disable mips64r2
4169             disable mips64r6
4170             disable mipsfpu
4171             disable msa
4172         ;;
4173         74kf)
4174             disable mips32r6
4175             disable mips64r2
4176             disable mips64r6
4177             disable msa
4178         ;;
4179         p5600)
4180             disable mips32r6
4181             disable mips64r2
4182             disable mips64r6
4183             disable mipsdsp
4184             disable mipsdspr2
4185             check_cflags "-mtune=p5600" &&
4186             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4187             add_asflags "-mfp64"
4188         ;;
4189         i6400)
4190             disable mips32r2
4191             disable mips32r6
4192             disable mips64r2
4193             disable mipsdsp
4194             disable mipsdspr2
4195             check_cflags "-mtune=i6400 -mabi=64" &&
4196             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4197             check_ldflags "-mabi=64" &&
4198             add_asflags "-mfp64"
4199         ;;
4200         loongson*)
4201             disable mipsfpu
4202             disable mips32r2
4203             disable mips32r6
4204             disable mips64r2
4205             disable mips64r6
4206             disable mipsdsp
4207             disable mipsdspr2
4208             disable msa
4209             enable local_aligned_8 local_aligned_16 local_aligned_32
4210             enable simd_align_16
4211             enable fast_64bit
4212             enable fast_clz
4213             enable fast_cmov
4214             enable fast_unaligned
4215             disable aligned_stack
4216             case $cpu in
4217                 loongson3*)
4218                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4219                 ;;
4220                 loongson2e)
4221                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4222                 ;;
4223                 loongson2f)
4224                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4225                 ;;
4226             esac
4227         ;;
4228         generic)
4229             disable mips64r6
4230             disable msa
4231         ;;
4232         *)
4233             disable mipsfpu
4234             disable mips32r2
4235             disable mips32r6
4236             disable mips64r2
4237             disable mips64r6
4238             disable mipsdsp
4239             disable mipsdspr2
4240             disable msa
4241         ;;
4242     esac
4243
4244 elif enabled ppc; then
4245
4246     disable ldbrx
4247
4248     case $(tolower $cpu) in
4249         601|ppc601|powerpc601)
4250             cpuflags="-mcpu=601"
4251             disable altivec
4252         ;;
4253         603*|ppc603*|powerpc603*)
4254             cpuflags="-mcpu=603"
4255             disable altivec
4256         ;;
4257         604*|ppc604*|powerpc604*)
4258             cpuflags="-mcpu=604"
4259             disable altivec
4260         ;;
4261         g3|75*|ppc75*|powerpc75*)
4262             cpuflags="-mcpu=750"
4263             disable altivec
4264         ;;
4265         g4|745*|ppc745*|powerpc745*)
4266             cpuflags="-mcpu=7450"
4267             disable vsx
4268         ;;
4269         74*|ppc74*|powerpc74*)
4270             cpuflags="-mcpu=7400"
4271             disable vsx
4272         ;;
4273         g5|970|ppc970|powerpc970)
4274             cpuflags="-mcpu=970"
4275             disable vsx
4276         ;;
4277         power[3-6]*)
4278             cpuflags="-mcpu=$cpu"
4279             disable vsx
4280         ;;
4281         power[7-8]*)
4282             cpuflags="-mcpu=$cpu"
4283         ;;
4284         cell)
4285             cpuflags="-mcpu=cell"
4286             enable ldbrx
4287             disable vsx
4288         ;;
4289         e500mc)
4290             cpuflags="-mcpu=e500mc"
4291             disable altivec
4292         ;;
4293         e500v2)
4294             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4295             disable altivec
4296             disable dcbzl
4297         ;;
4298         e500)
4299             cpuflags="-mcpu=8540 -mhard-float"
4300             disable altivec
4301             disable dcbzl
4302         ;;
4303     esac
4304
4305 elif enabled sparc; then
4306
4307     case $cpu in
4308         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4309             cpuflags="-mcpu=$cpu"
4310         ;;
4311         ultrasparc*|niagara[234])
4312             cpuflags="-mcpu=$cpu"
4313         ;;
4314     esac
4315
4316 elif enabled x86; then
4317
4318     case $cpu in
4319         i[345]86|pentium)
4320             cpuflags="-march=$cpu"
4321             disable i686
4322             disable mmx
4323         ;;
4324         # targets that do NOT support nopl and conditional mov (cmov)
4325         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4326             cpuflags="-march=$cpu"
4327             disable i686
4328         ;;
4329         # targets that do support nopl and conditional mov (cmov)
4330         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4331         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4332             cpuflags="-march=$cpu"
4333             enable i686
4334             enable fast_cmov
4335         ;;
4336         # targets that do support conditional mov but on which it's slow
4337         pentium4|pentium4m|prescott|nocona)
4338             cpuflags="-march=$cpu"
4339             enable i686
4340             disable fast_cmov
4341         ;;
4342     esac
4343
4344 fi
4345
4346 if [ "$cpu" != generic ]; then
4347     add_cflags  $cpuflags
4348     add_asflags $cpuflags
4349     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4350 fi
4351
4352 # compiler sanity check
4353 check_exec <<EOF
4354 int main(void){ return 0; }
4355 EOF
4356 if test "$?" != 0; then
4357     echo "$cc is unable to create an executable file."
4358     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4359         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4360         echo "Only do this if you know what cross compiling means."
4361     fi
4362     die "C compiler test failed."
4363 fi
4364
4365 add_cppflags -D_ISOC99_SOURCE
4366 add_cxxflags -D__STDC_CONSTANT_MACROS
4367 check_cflags -std=c99
4368 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4369 #include <stdlib.h>
4370 EOF
4371 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4372 #include <stdlib.h>
4373 EOF
4374
4375 add_host_cppflags -D_ISOC99_SOURCE
4376 check_host_cflags -std=c99
4377 check_host_cflags -Wall
4378 check_host_cflags -O3
4379
4380 check_64bit(){
4381     arch32=$1
4382     arch64=$2
4383     expr=$3
4384     check_code cc "" "int test[2*($expr) - 1]" &&
4385         subarch=$arch64 || subarch=$arch32
4386 }
4387
4388 case "$arch" in
4389     aarch64|alpha|ia64)
4390         spic=$shared
4391     ;;
4392     mips)
4393         check_64bit mips mips64 '_MIPS_SIM > 1'
4394         spic=$shared
4395     ;;
4396     parisc)
4397         check_64bit parisc parisc64 'sizeof(void *) > 4'
4398         spic=$shared
4399     ;;
4400     ppc)
4401         check_64bit ppc ppc64 'sizeof(void *) > 4'
4402         spic=$shared
4403     ;;
4404     s390)
4405         check_64bit s390 s390x 'sizeof(void *) > 4'
4406         spic=$shared
4407     ;;
4408     sparc)
4409         check_64bit sparc sparc64 'sizeof(void *) > 4'
4410         spic=$shared
4411     ;;
4412     x86)
4413         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4414         # Treat x32 as x64 for now. Note it also needs spic=$shared
4415         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4416             subarch=x86_64
4417         if test "$subarch" = "x86_64"; then
4418             spic=$shared
4419         fi
4420     ;;
4421     ppc)
4422         check_cc <<EOF && subarch="ppc64"
4423         int test[(int)sizeof(char*) - 7];
4424 EOF
4425     ;;
4426 esac
4427
4428 enable $subarch
4429 enabled spic && enable_weak pic
4430
4431 # OS specific
4432 case $target_os in
4433     aix)
4434         SHFLAGS=-shared
4435         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4436         enabled shared && add_ldflags -Wl,-brtl
4437         ;;
4438     android)
4439         disable symver
4440         enable section_data_rel_ro
4441         SLIB_INSTALL_NAME='$(SLIBNAME)'
4442         SLIB_INSTALL_LINKS=
4443         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4444         ;;
4445     haiku)
4446         prefix_default="/boot/common"
4447         network_extralibs="-lnetwork"
4448         host_libs=
4449         ;;
4450     sunos)
4451         SHFLAGS='-shared -Wl,-h,$$(@F)'
4452         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4453         network_extralibs="-lsocket -lnsl"
4454         add_cppflags -D__EXTENSIONS__
4455         # When using suncc to build, the Solaris linker will mark
4456         # an executable with each instruction set encountered by
4457         # the Solaris assembler.  As our libraries contain their own
4458         # guards for processor-specific code, instead suppress
4459         # generation of the HWCAPS ELF section on Solaris x86 only.
4460         enabled_all suncc x86 &&
4461             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4462             add_ldflags -Wl,-M,mapfile
4463         nm_default='nm -P -g'
4464         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4465         ;;
4466     netbsd)
4467         disable symver
4468         oss_indev_extralibs="-lossaudio"
4469         oss_outdev_extralibs="-lossaudio"
4470         enabled gcc || check_ldflags -Wl,-zmuldefs
4471         ;;
4472     openbsd|bitrig)
4473         disable symver
4474         SHFLAGS='-shared'
4475         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4476         SLIB_INSTALL_LINKS=
4477         oss_indev_extralibs="-lossaudio"
4478         oss_outdev_extralibs="-lossaudio"
4479         ;;
4480     dragonfly)
4481         disable symver
4482         ;;
4483     freebsd)
4484         ;;
4485     bsd/os)
4486         add_extralibs -lpoll -lgnugetopt
4487         strip="strip -d"
4488         ;;
4489     darwin)
4490         enabled ppc && add_asflags -force_cpusubtype_ALL
4491         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4492         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4493         strip="${strip} -x"
4494         add_ldflags -Wl,-dynamic,-search_paths_first
4495         SLIBSUF=".dylib"
4496         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4497         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4498         objformat="macho"
4499         enabled x86_64 && objformat="macho64"
4500         enabled_any pic shared x86_64 ||
4501             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4502         ;;
4503     msys*)
4504         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4505         ;;
4506     mingw32*|mingw64*)
4507         if test $target_os = "mingw32ce"; then
4508             disable network
4509         else
4510             target_os=mingw32
4511         fi
4512         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4513         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4514         LIBTARGET=i386
4515         if enabled x86_64; then
4516             LIBTARGET="i386:x86-64"
4517         elif enabled arm; then
4518             LIBTARGET=arm-wince
4519         fi
4520         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4521         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4522         shlibdir_default="$bindir_default"
4523         SLIBPREF=""
4524         SLIBSUF=".dll"
4525         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4526         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4527         dlltool="${cross_prefix}dlltool"
4528         if check_cmd lib.exe -list; then
4529             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4530             if enabled x86_64; then
4531                 LIBTARGET=x64
4532             fi
4533         elif check_cmd $dlltool --version; then
4534             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4535         fi
4536         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4537         SLIB_INSTALL_LINKS=
4538         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4539         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4540         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4541         objformat="win32"
4542         ranlib=:
4543         enable dos_paths
4544         check_ldflags -Wl,--nxcompat,--dynamicbase
4545         # Lets work around some stupidity in binutils.
4546         # ld will strip relocations from executables even though we need them
4547         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4548         # however ld then forgets what the entry point should be (oops) so we
4549         # have to manually (re)set it.
4550         if enabled x86_32; then
4551             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4552         elif enabled x86_64; then
4553             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4554             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4555             # Set image base >4GB for extra entropy with HEASLR
4556             add_ldexeflags -Wl,--image-base,0x140000000
4557             append SHFLAGS -Wl,--image-base,0x180000000
4558         fi
4559         ;;
4560     win32|win64)
4561         disable symver
4562         if enabled shared; then
4563             # Link to the import library instead of the normal static library
4564             # for shared libs.
4565             LD_LIB='%.lib'
4566             # Cannot build both shared and static libs with MSVC or icl.
4567             disable static
4568         fi
4569         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4570         shlibdir_default="$bindir_default"
4571         SLIBPREF=""
4572         SLIBSUF=".dll"
4573         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4574         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4575         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4576         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4577         SLIB_INSTALL_LINKS=
4578         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4579         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4580         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4581         objformat="win32"
4582         ranlib=:
4583         enable dos_paths
4584         ;;
4585     cygwin*)
4586         target_os=cygwin
4587         shlibdir_default="$bindir_default"
4588         SLIBPREF="cyg"
4589         SLIBSUF=".dll"
4590         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4591         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4592         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4593         SLIB_INSTALL_LINKS=
4594         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4595         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4596         objformat="win32"
4597         enable dos_paths
4598         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4599         ;;
4600     *-dos|freedos|opendos)
4601         network_extralibs="-lsocket"
4602         objformat="coff"
4603         enable dos_paths
4604         add_cppflags -U__STRICT_ANSI__
4605         ;;
4606     linux)
4607         enable dv1394
4608         enable section_data_rel_ro
4609         ;;
4610     irix*)
4611         target_os=irix
4612         ranlib="echo ignoring ranlib"
4613         ;;
4614     os/2*)
4615         strip="lxlite -CS"
4616         ln_s="cp -f"
4617         objformat="aout"
4618         add_cppflags -D_GNU_SOURCE
4619         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4620         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4621         LIBSUF="_s.a"
4622         SLIBPREF=""
4623         SLIBSUF=".dll"
4624         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4625         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4626         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4627             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4628             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4629             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4630             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4631         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4632             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4633         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4634         enable dos_paths
4635         enable_weak os2threads
4636         ;;
4637     gnu/kfreebsd)
4638         add_cppflags -D_BSD_SOURCE
4639         ;;
4640     gnu)
4641         ;;
4642     qnx)
4643         add_cppflags -D_QNX_SOURCE
4644         network_extralibs="-lsocket"
4645         ;;
4646     symbian)
4647         SLIBSUF=".dll"
4648         enable dos_paths
4649         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4650         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4651         add_ldflags -Wl,--target1-abs,--no-undefined \
4652                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4653                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4654         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4655                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4656                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4657         ;;
4658     osf1)
4659         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4660         ;;
4661     minix)
4662         ;;
4663     plan9)
4664         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4665                      -D_REENTRANT_SOURCE        \
4666                      -D_RESEARCH_SOURCE         \
4667                      -DFD_SETSIZE=96            \
4668                      -DHAVE_SOCK_OPTS
4669         add_compat strtod.o strtod=avpriv_strtod
4670         network_extralibs='-lbsd'
4671         exeobjs=compat/plan9/main.o
4672         disable ffserver
4673         cp_f='cp'
4674         ;;
4675     none)
4676         ;;
4677     *)
4678         die "Unknown OS '$target_os'."
4679         ;;
4680 esac
4681
4682 # determine libc flavour
4683
4684 probe_libc(){
4685     pfx=$1
4686     pfx_no_=${pfx%_}
4687     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4688     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4689         eval ${pfx}libc_type=uclibc
4690         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4691     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4692         eval ${pfx}libc_type=glibc
4693         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4694     # MinGW headers can be installed on Cygwin, so check for newlib first.
4695     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4696         eval ${pfx}libc_type=newlib
4697         add_${pfx}cppflags -U__STRICT_ANSI__
4698     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4699     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4700         eval ${pfx}libc_type=mingw64
4701         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4702             add_compat msvcrt/snprintf.o
4703             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4704         fi
4705         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4706         eval test \$${pfx_no_}cc_type = "gcc" &&
4707             add_${pfx}cppflags -D__printf__=__gnu_printf__
4708     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4709          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4710         eval ${pfx}libc_type=mingw32
4711         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4712             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4713             die "ERROR: MinGW32 runtime version must be >= 3.15."
4714         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4715         eval test \$${pfx_no_}cc_type = "gcc" &&
4716             add_${pfx}cppflags -D__printf__=__gnu_printf__
4717     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4718         eval ${pfx}libc_type=msvcrt
4719         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4720             if [ "$pfx" = host_ ]; then
4721                 add_host_cppflags -Dsnprintf=_snprintf
4722             else
4723                 add_compat strtod.o strtod=avpriv_strtod
4724                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4725                                              _snprintf=avpriv_snprintf  \
4726                                              vsnprintf=avpriv_vsnprintf
4727             fi
4728         fi
4729         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4730         # 0x601 by default unless something else is set by the user.
4731         # This can easily lead to us detecting functions only present
4732         # in such new versions and producing binaries requiring windows 7.0.
4733         # Therefore explicitly set the default to XP unless the user has
4734         # set something else on the command line.
4735         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4736         # family. For these cases, configure is free to use any functions
4737         # found in the SDK headers by default. (Alternatively, we could force
4738         # _WIN32_WINNT to 0x0602 in that case.)
4739         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4740             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4741 #ifdef WINAPI_FAMILY
4742 #include <winapifamily.h>
4743 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4744 #error not desktop
4745 #endif
4746 #endif
4747 EOF
4748     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4749         eval ${pfx}libc_type=klibc
4750     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4751         eval ${pfx}libc_type=bionic
4752     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4753         eval ${pfx}libc_type=solaris
4754         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4755     fi
4756     check_${pfx}cc <<EOF
4757 #include <time.h>
4758 void *v = localtime_r;
4759 EOF
4760 test "$?" != 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
4761 #include <time.h>
4762 void *v = localtime_r;
4763 EOF
4764
4765 }
4766
4767 probe_libc
4768 test -n "$libc_type" && enable libc_$libc_type
4769 probe_libc host_
4770 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4771
4772 case $libc_type in
4773     bionic)
4774         add_compat strtod.o strtod=avpriv_strtod
4775         ;;
4776 esac
4777
4778 # hacks for compiler/libc/os combinations
4779
4780 if enabled_all tms470 libc_glibc; then
4781     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4782     add_cppflags -D__USER_LABEL_PREFIX__=
4783     add_cppflags -D__builtin_memset=memset
4784     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4785     add_cflags   -pds=48    # incompatible redefinition of macro
4786 fi
4787
4788 if enabled_all ccc libc_glibc; then
4789     add_ldflags -Wl,-z,now  # calls to libots crash without this
4790 fi
4791
4792 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4793     add_cppflags '-I\$(SRC_PATH)/compat/float'
4794
4795 esc(){
4796     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4797 }
4798
4799 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4800
4801 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4802
4803 set_default libdir
4804 : ${shlibdir_default:="$libdir"}
4805 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4806
4807 set_default $PATHS_LIST
4808 set_default nm
4809
4810 # we need to build at least one lib type
4811 if ! enabled_any static shared; then
4812     cat <<EOF
4813 At least one library type must be built.
4814 Specify --enable-static to build the static libraries or --enable-shared to
4815 build the shared libraries as well. To only build the shared libraries specify
4816 --disable-static in addition to --enable-shared.
4817 EOF
4818     exit 1;
4819 fi
4820
4821 die_license_disabled() {
4822     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4823 }
4824
4825 die_license_disabled_gpl() {
4826     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4827 }
4828
4829 die_license_disabled gpl frei0r
4830 die_license_disabled gpl libcdio
4831 die_license_disabled gpl librubberband
4832 die_license_disabled gpl libsmbclient
4833 die_license_disabled gpl libutvideo
4834 die_license_disabled gpl libvidstab
4835 die_license_disabled gpl libx264
4836 die_license_disabled gpl libx265
4837 die_license_disabled gpl libxavs
4838 die_license_disabled gpl libxvid
4839 die_license_disabled gpl libzvbi
4840 die_license_disabled gpl x11grab
4841
4842 die_license_disabled nonfree libaacplus
4843 die_license_disabled nonfree libfaac
4844 die_license_disabled nonfree nvenc
4845 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4846 enabled gpl && die_license_disabled_gpl nonfree openssl
4847
4848 die_license_disabled version3 gmp
4849 die_license_disabled version3 libopencore_amrnb
4850 die_license_disabled version3 libopencore_amrwb
4851 die_license_disabled version3 libsmbclient
4852 die_license_disabled version3 libvo_aacenc
4853 die_license_disabled version3 libvo_amrwbenc
4854
4855 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4856
4857 disabled optimizations || check_cflags -fomit-frame-pointer
4858
4859 enable_weak_pic() {
4860     disabled pic && return
4861     enable pic
4862     add_cppflags -DPIC
4863     case "$target_os" in
4864     mingw*|cygwin*)
4865         ;;
4866     *)
4867         add_cflags -fPIC
4868         ;;
4869     esac
4870     add_asflags  -fPIC
4871 }
4872
4873 enabled pic && enable_weak_pic
4874
4875 check_cc <<EOF || die "Symbol mangling check failed."
4876 int ff_extern;
4877 EOF
4878 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4879 extern_prefix=${sym%%ff_extern*}
4880
4881 check_cc <<EOF && enable_weak inline_asm
4882 void foo(void) { __asm__ volatile ("" ::); }
4883 EOF
4884
4885 _restrict=
4886 for restrict_keyword in restrict __restrict__ __restrict; do
4887     check_cc <<EOF && _restrict=$restrict_keyword && break
4888 void foo(char * $restrict_keyword p);
4889 EOF
4890 done
4891
4892 check_cc <<EOF && enable pragma_deprecated
4893 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4894 EOF
4895
4896 check_cc <<EOF && enable attribute_packed
4897 struct { int x; } __attribute__((packed)) x;
4898 EOF
4899
4900 check_cc <<EOF && enable attribute_may_alias
4901 union { int x; } __attribute__((may_alias)) x;
4902 EOF
4903
4904 check_cc <<EOF || die "endian test failed"
4905 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4906 EOF
4907 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4908
4909 if ! enabled ppc64 || enabled bigendian; then
4910     disable vsx
4911 fi
4912
4913 check_gas() {
4914     log "check_gas using '$as' as AS"
4915     # :vararg is used on aarch64, arm and ppc altivec
4916     check_as <<EOF || return 1
4917 .macro m n, y:vararg=0
4918 \n: .int \y
4919 .endm
4920 m x
4921 EOF
4922     # .altmacro is only used in arm asm
4923     ! enabled arm || check_as <<EOF || return 1
4924 .altmacro
4925 EOF
4926     enable gnu_as
4927     return 0
4928 }
4929
4930 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4931     nogas=:
4932     enabled_any arm aarch64 && nogas=die
4933     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4934     as_noop=-v
4935
4936     case $as_type in
4937         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4938         gcc)  gaspp_as_type=gas ;;
4939         *)    gaspp_as_type=$as_type ;;
4940     esac
4941
4942     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4943
4944     test "${as#*gas-preprocessor.pl}" != "$as" ||
4945     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4946         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4947
4948     if ! check_gas ; then
4949         as=${gas:=$as}
4950         check_gas || \
4951             $nogas "GNU assembler not found, install/update gas-preprocessor"
4952     fi
4953
4954     check_as <<EOF && enable as_func
4955 .func test
4956 .endfunc
4957 EOF
4958 fi
4959
4960 check_inline_asm inline_asm_labels '"1:\n"'
4961
4962 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4963
4964 if enabled aarch64; then
4965     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4966     # internal assembler in clang 3.3 does not support this instruction
4967     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4968     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4969
4970     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4971
4972 elif enabled alpha; then
4973
4974     check_cflags -mieee
4975
4976 elif enabled arm; then
4977
4978     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4979
4980     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4981 float func(float a, float b){ return a+b; }
4982 EOF
4983
4984     enabled thumb && check_cflags -mthumb || check_cflags -marm
4985
4986     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4987         enable vfp_args
4988     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4989         enable vfp_args
4990     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4991         case "${cross_prefix:-$cc}" in
4992             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4993             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4994 __asm__ (".eabi_attribute 28, 1");
4995 int main(void) { return 0; }
4996 EOF
4997         esac
4998         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4999     fi
5000
5001     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5002     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5003     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5004     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5005     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5006     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5007     enabled setend  && check_insn setend  'setend be'
5008
5009     [ $target_os = linux ] || [ $target_os = android ] ||
5010         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5011             $ARCH_EXT_LIST_ARM
5012
5013     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5014
5015     check_as <<EOF && enable as_dn_directive
5016 ra .dn d0.i16
5017 .unreq ra
5018 EOF
5019
5020     # llvm's integrated assembler supports .object_arch from llvm 3.5
5021     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5022 .object_arch armv4
5023 EOF
5024
5025     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5026
5027 elif enabled mips; then
5028
5029     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5030     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5031     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5032
5033     # Enable minimum ISA based on selected options
5034     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5035         add_cflags "-mips64r2"
5036         add_asflags "-mips64r2"
5037     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5038         add_cflags "-mips64"
5039         add_asflags "-mips64"
5040     elif enabled mipsdsp || enabled mipsdspr2; then
5041         add_cflags "-mips32r2 -mfp32"
5042         add_asflags "-mips32r2 -mfp32"
5043     fi
5044
5045     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5046      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5047     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5048      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5049     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5050      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5051     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5052      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5053
5054     enabled msa && add_asflags "-mmsa"
5055
5056 elif enabled parisc; then
5057
5058     if enabled gcc; then
5059         case $($cc -dumpversion) in
5060             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5061         esac
5062     fi
5063
5064 elif enabled ppc; then
5065
5066     enable local_aligned_8 local_aligned_16 local_aligned_32
5067
5068     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5069     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5070     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5071     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5072
5073     # AltiVec flags: The FSF version of GCC differs from the Apple version
5074     if enabled altivec; then
5075         check_cflags -maltivec -mabi=altivec &&
5076         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5077         check_cflags -faltivec
5078
5079         # check if our compiler supports Motorola AltiVec C API
5080         check_cc <<EOF || disable altivec
5081 $inc_altivec_h
5082 int main(void) {
5083     vector signed int v1 = (vector signed int) { 0 };
5084     vector signed int v2 = (vector signed int) { 1 };
5085     v1 = vec_add(v1, v2);
5086     return 0;
5087 }
5088 EOF
5089
5090         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5091     fi
5092
5093     if enabled vsx; then
5094         check_cflags -mvsx &&
5095         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5096     fi
5097
5098     if enabled power8; then
5099         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5100     fi
5101
5102 elif enabled x86; then
5103
5104     check_builtin rdtsc    intrin.h   "__rdtsc()"
5105     check_builtin mm_empty mmintrin.h "_mm_empty()"
5106
5107     enable local_aligned_8 local_aligned_16 local_aligned_32
5108
5109     # check whether EBP is available on x86
5110     # As 'i' is stored on the stack, this program will crash
5111     # if the base pointer is used to access it because the
5112     # base pointer is cleared in the inline assembly code.
5113     check_exec_crash <<EOF && enable ebp_available
5114 volatile int i=0;
5115 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5116 return i;
5117 EOF
5118
5119     # check whether EBX is available on x86
5120     check_inline_asm ebx_available '""::"b"(0)' &&
5121         check_inline_asm ebx_available '"":::"%ebx"'
5122
5123     # check whether xmm clobbers are supported
5124     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5125
5126     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5127         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5128
5129     # check whether binutils is new enough to compile SSSE3/MMXEXT
5130     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5131     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5132
5133     if ! disabled_any asm mmx yasm; then
5134         if check_cmd $yasmexe --version; then
5135             enabled x86_64 && yasm_extra="-m amd64"
5136             yasm_debug="-g dwarf2"
5137         elif check_cmd nasm -v; then
5138             yasmexe=nasm
5139             yasm_debug="-g -F dwarf"
5140             if enabled x86_64; then
5141                 case "$objformat" in
5142                     elf)   objformat=elf64 ;;
5143                     win32) objformat=win64 ;;
5144                 esac
5145             fi
5146         fi
5147
5148         YASMFLAGS="-f $objformat $yasm_extra"
5149         enabled pic               && append YASMFLAGS "-DPIC"
5150         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5151         case "$objformat" in
5152             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5153         esac
5154
5155         check_yasm "movbe ecx, [5]" && enable yasm ||
5156             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5157         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5158         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5159         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5160         check_yasm "CPU amdnop" || disable cpunop
5161     fi
5162
5163     case "$cpu" in
5164         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5165             disable fast_clz
5166         ;;
5167     esac
5168
5169 fi
5170
5171 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5172
5173 check_ldflags -Wl,--as-needed
5174 check_ldflags -Wl,-z,noexecstack
5175
5176 if check_func dlopen; then
5177     ldl=
5178 elif check_func dlopen -ldl; then
5179     ldl=-ldl
5180 fi
5181
5182 frei0r_filter_extralibs='$ldl'
5183 frei0r_src_filter_extralibs='$ldl'
5184 ladspa_filter_extralibs='$ldl'
5185 nvenc_encoder_extralibs='$ldl'
5186
5187 if ! disabled network; then
5188     check_func getaddrinfo $network_extralibs
5189     check_func inet_aton $network_extralibs
5190
5191     check_type netdb.h "struct addrinfo"
5192     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5193     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5194     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5195     check_type poll.h "struct pollfd"
5196     check_type netinet/sctp.h "struct sctp_event_subscribe"
5197     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5198     check_type netinet/in.h "struct sockaddr_in6"
5199     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5200     check_type "sys/types.h sys/socket.h" socklen_t
5201
5202     # Prefer arpa/inet.h over winsock2
5203     if check_header arpa/inet.h ; then
5204         check_func closesocket
5205     elif check_header winsock2.h ; then
5206         check_func_headers winsock2.h closesocket -lws2 &&
5207             network_extralibs="-lws2" ||
5208         { check_func_headers winsock2.h closesocket -lws2_32 &&
5209             network_extralibs="-lws2_32"; } || disable winsock2_h network
5210         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5211
5212         check_type ws2tcpip.h socklen_t
5213         check_type ws2tcpip.h "struct addrinfo"
5214         check_type ws2tcpip.h "struct group_source_req"
5215         check_type ws2tcpip.h "struct ip_mreq_source"
5216         check_type ws2tcpip.h "struct ipv6_mreq"
5217         check_type winsock2.h "struct pollfd"
5218         check_struct winsock2.h "struct sockaddr" sa_len
5219         check_type ws2tcpip.h "struct sockaddr_in6"
5220         check_type ws2tcpip.h "struct sockaddr_storage"
5221     else
5222         disable network
5223     fi
5224 fi
5225
5226 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5227 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5228 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5229 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5230 check_builtin sarestart signal.h "SA_RESTART"
5231 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5232 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5233 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5234
5235 case "$custom_allocator" in
5236     jemalloc)
5237         # jemalloc by default does not use a prefix
5238         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5239     ;;
5240     tcmalloc)
5241         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5242         malloc_prefix=tc_
5243     ;;
5244 esac
5245
5246 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5247 check_func  ${malloc_prefix}memalign            && enable memalign
5248 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5249
5250 check_func  access
5251 check_func  arc4random
5252 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5253 check_func  fcntl
5254 check_func  fork
5255 check_func  gethrtime
5256 check_func  getopt
5257 check_func  getrusage
5258 check_func  gettimeofday
5259 check_func  isatty
5260 check_func  mach_absolute_time
5261 check_func  mkstemp
5262 check_func  mmap
5263 check_func  mprotect
5264 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5265 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5266 check_func  sched_getaffinity
5267 check_func  setrlimit
5268 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5269 check_func  strerror_r
5270 check_func  sysconf
5271 check_func  sysctl
5272 check_func  usleep
5273
5274 check_func_headers conio.h kbhit
5275 check_func_headers io.h setmode
5276 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5277 check_func_headers stdlib.h getenv
5278 check_func_headers sys/stat.h lstat
5279
5280 check_func_headers windows.h CoTaskMemFree -lole32
5281 check_func_headers windows.h GetProcessAffinityMask
5282 check_func_headers windows.h GetProcessTimes
5283 check_func_headers windows.h GetSystemTimeAsFileTime
5284 check_func_headers windows.h MapViewOfFile
5285 check_func_headers windows.h PeekNamedPipe
5286 check_func_headers windows.h SetConsoleTextAttribute
5287 check_func_headers windows.h SetConsoleCtrlHandler
5288 check_func_headers windows.h Sleep
5289 check_func_headers windows.h VirtualAlloc
5290 check_struct windows.h "CONDITION_VARIABLE" Ptr
5291 check_func_headers glob.h glob
5292 enabled xlib &&
5293     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5294
5295 check_header direct.h
5296 check_header dirent.h
5297 check_header dlfcn.h
5298 check_header d3d11.h
5299 check_header dxva.h
5300 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5301 check_header io.h
5302 check_header libcrystalhd/libcrystalhd_if.h
5303 check_header mach/mach_time.h
5304 check_header malloc.h
5305 check_header net/udplite.h
5306 check_header poll.h
5307 check_header sys/mman.h
5308 check_header sys/param.h
5309 check_header sys/resource.h
5310 check_header sys/select.h
5311 check_header sys/time.h
5312 check_header sys/un.h
5313 check_header termios.h
5314 check_header unistd.h
5315 check_header valgrind/valgrind.h
5316 check_header vdpau/vdpau.h
5317 check_header vdpau/vdpau_x11.h
5318 check_header VideoDecodeAcceleration/VDADecoder.h
5319 check_header VideoToolbox/VideoToolbox.h
5320 check_header windows.h
5321 check_header X11/extensions/XvMClib.h
5322 check_header asm/types.h
5323
5324 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5325 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5326 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5327 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5328
5329 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5330
5331 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5332 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5333 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5334 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5335 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5336
5337 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5338 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5339
5340 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5341
5342 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5343
5344 if ! disabled w32threads && ! enabled pthreads; then
5345     check_func_headers "windows.h process.h" _beginthreadex &&
5346         enable w32threads || disable w32threads
5347     if ! enabled w32threads && enabled winrt; then
5348         check_func_headers "windows.h" CreateThread &&
5349             enable w32threads || disable w32threads
5350     fi
5351 fi
5352
5353 # check for some common methods of building with pthread support
5354 # do this before the optional library checks as some of them require pthreads
5355 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5356     enable pthreads
5357     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5358         add_cflags -pthread
5359         add_extralibs -pthread
5360     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5361         add_cflags -pthreads
5362         add_extralibs -pthreads
5363     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5364         add_cflags -ldl -pthread
5365         add_extralibs -ldl -pthread
5366     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5367         add_extralibs -lpthreadGC2
5368     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5369         :
5370     elif ! check_func pthread_join && ! check_func pthread_create; then
5371         disable pthreads
5372     fi
5373     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5374 fi
5375
5376
5377 if enabled pthreads; then
5378   check_func pthread_cancel
5379 fi
5380
5381 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5382 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5383 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5384
5385 check_lib math.h sin -lm && LIBM="-lm"
5386 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5387
5388 atan2f_args=2
5389 copysign_args=2
5390 hypot_args=2
5391 ldexpf_args=2
5392 powf_args=2
5393
5394 for func in $MATH_FUNCS; do
5395     eval check_mathfunc $func \${${func}_args:-1}
5396 done
5397
5398 for func in $COMPLEX_FUNCS; do
5399     eval check_complexfunc $func \${${func}_args:-1}
5400 done
5401
5402 # these are off by default, so fail if requested and not available
5403 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5404 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5405                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5406 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5407                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5408                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5409 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5410 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5411 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5412 enabled gcrypt            && require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5413 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5414 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5415 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5416 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5417 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5418 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5419 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5420 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5421 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5422                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5423                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5424 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5425 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5426 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5427 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5428                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5429                                  warn "using libfdk without pkg-config"; } }
5430 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"
5431 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5432 enabled fontconfig        && enable libfontconfig
5433 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5434 enabled libfreetype       && require_libfreetype
5435 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5436 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5437 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5438                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5439                                done || die "ERROR: libgsm not found"; }
5440 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5441 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.7.1" kvazaar.h kvz_api_get
5442 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5443 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5444 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5445 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5446 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5447 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5448 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5449 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5450 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5451                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5452                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5453                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5454                                die "ERROR: libopenjpeg not found"; }
5455 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5456 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5457 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5458 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5459 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5460 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5461 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5462 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5463                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5464 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5465 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5466 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5467 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5468 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5469     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5470     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5471 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5472 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5473 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5474                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5475                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5476 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5477 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5478 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5479 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5480 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5481 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5482
5483 enabled libvpx            && {
5484     enabled libvpx_vp8_decoder && {
5485         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5486             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5487                 die "ERROR: libvpx decoder version must be >=0.9.1";
5488     }
5489     enabled libvpx_vp8_encoder && {
5490         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5491             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5492                 die "ERROR: libvpx encoder version must be >=0.9.7";
5493     }
5494     enabled libvpx_vp9_decoder && {
5495         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5496             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5497                 disable libvpx_vp9_decoder;
5498     }
5499     enabled libvpx_vp9_encoder && {
5500         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5501             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5502                 disable libvpx_vp9_encoder;
5503     }
5504     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5505         die "libvpx enabled but no supported decoders found"
5506     fi
5507 }
5508
5509 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5510 enabled libwebp           && {
5511     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5512     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5513 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5514                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5515                                  warn "using libx264 without pkg-config"; } } &&
5516                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5517                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5518                              { check_cpp_condition x264.h "X264_MPEG2" &&
5519                                enable libx262; }
5520 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5521                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5522                                die "ERROR: libx265 version must be >= 57."; }
5523 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5524 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5525 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5526 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5527 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5528 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5529                                 { ! enabled cross_compile && {
5530                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5531                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5532                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5533                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5534                                die "ERROR: mmal not found"; }
5535 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5536 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5537                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5538                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5539                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5540 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5541                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5542                                die "ERROR: openal not found"; } &&
5543                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5544                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5545 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5546                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5547                                die "ERROR: opencl not found"; } &&
5548                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5549                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5550                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5551 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5552                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5553                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5554                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5555                                die "ERROR: opengl not found."
5556                              }
5557 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5558                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5559                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5560                                die "ERROR: openssl not found"; }
5561 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5562
5563 # libdc1394 check
5564 if enabled libdc1394; then
5565     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5566         enable libdc1394_2; } ||
5567     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5568         enable libdc1394_1; } ||
5569     die "ERROR: No version of libdc1394 found "
5570 fi
5571 if ! disabled sdl; then
5572     SDL_CONFIG="${cross_prefix}sdl-config"
5573     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5574         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5575         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5576         enable sdl
5577     else
5578         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5579             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5580             sdl_libs=$("${SDL_CONFIG}" --libs)
5581             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5582             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5583             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5584             enable sdl
5585         elif enabled sdl ; then
5586             die "ERROR: SDL not found"
5587         else
5588             disable sdl
5589         fi
5590     fi
5591     if test $target_os = "mingw32"; then
5592         sdl_libs="$sdl_libs -mconsole"
5593     fi
5594 fi
5595 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5596
5597 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5598     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5599     enable securetransport; }
5600
5601 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5602                        enable schannel && add_extralibs -lSecur32; }
5603
5604 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5605 enabled makeinfo \
5606     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5607     && enable makeinfo_html || disable makeinfo_html
5608 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5609 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5610 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5611 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5612
5613 check_header linux/fb.h
5614 check_header linux/videodev.h
5615 check_header linux/videodev2.h
5616 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5617
5618 check_header sys/videoio.h
5619 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5620
5621 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5622 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5623 # w32api 3.12 had it defined wrong
5624 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5625
5626 check_type "dshow.h" IBaseFilter
5627
5628 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5629 { check_header dev/bktr/ioctl_meteor.h &&
5630   check_header dev/bktr/ioctl_bt848.h; } ||
5631 { check_header machine/ioctl_meteor.h &&
5632   check_header machine/ioctl_bt848.h; } ||
5633 { check_header dev/video/meteor/ioctl_meteor.h &&
5634   check_header dev/video/bktr/ioctl_bt848.h; } ||
5635 check_header dev/ic/bt8xx.h
5636
5637 check_header sndio.h
5638 if check_struct sys/soundcard.h audio_buf_info bytes; then
5639     enable_safe sys/soundcard.h
5640 else
5641     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5642     #include <sys/soundcard.h>
5643     audio_buf_info abc;
5644 EOF
5645 fi
5646 check_header soundcard.h
5647
5648 enabled_any alsa_indev alsa_outdev &&
5649     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5650
5651 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5652     check_func jack_port_get_latency_range -ljack
5653
5654 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5655
5656 if enabled libcdio; then
5657     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5658     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5659     die "ERROR: No usable libcdio/cdparanoia found"
5660 fi
5661
5662 enabled xlib &&
5663     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5664
5665 if ! disabled libxcb; then
5666     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5667         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5668     } && disable x11grab && enable libxcb
5669
5670 if enabled libxcb; then
5671     disabled libxcb_shm || {
5672         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5673             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5674         } && check_header sys/shm.h && enable libxcb_shm; }
5675
5676     disabled libxcb_xfixes || {
5677         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5678             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5679         } && enable libxcb_xfixes; }
5680
5681     disabled libxcb_shape || {
5682         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5683             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5684         } && enable libxcb_shape; }
5685
5686     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5687     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5688 fi
5689 fi
5690
5691 if enabled x11grab; then
5692     enabled xlib || die "ERROR: Xlib not found"
5693     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5694     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5695 fi
5696
5697 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5698
5699 enabled dxva2api_h &&
5700     check_cc <<EOF && enable dxva2api_cobj
5701 #define _WIN32_WINNT 0x0600
5702 #define COBJMACROS
5703 #include <windows.h>
5704 #include <d3d9.h>
5705 #include <dxva2api.h>
5706 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5707 EOF
5708
5709 enabled vaapi &&
5710     check_lib va/va.h vaInitialize -lva ||
5711     disable vaapi
5712
5713 enabled vaapi && enabled xlib &&
5714     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5715     enable vaapi_x11
5716
5717 enabled vdpau &&
5718     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5719     disable vdpau
5720
5721 enabled vdpau && enabled xlib &&
5722     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5723     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5724     enable vdpau_x11
5725
5726 # Funny iconv installations are not unusual, so check it after all flags have been set
5727 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5728
5729 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5730
5731 # add some useful compiler flags if supported
5732 check_cflags -Wdeclaration-after-statement
5733 check_cflags -Wall
5734 check_cflags -Wdisabled-optimization
5735 check_cflags -Wpointer-arith
5736 check_cflags -Wredundant-decls
5737 check_cflags -Wwrite-strings
5738 check_cflags -Wtype-limits
5739 check_cflags -Wundef
5740 check_cflags -Wmissing-prototypes
5741 check_cflags -Wno-pointer-to-int-cast
5742 check_cflags -Wstrict-prototypes
5743 check_cflags -Wempty-body
5744 enabled extra_warnings && check_cflags -Winline
5745 enabled extra_warnings && check_cflags -Wcast-qual
5746
5747 check_disable_warning(){
5748     warning_flag=-W${1#-Wno-}
5749     test_cflags $warning_flag && add_cflags $1
5750 }
5751
5752 check_disable_warning -Wno-parentheses
5753 check_disable_warning -Wno-switch
5754 check_disable_warning -Wno-format-zero-length
5755 check_disable_warning -Wno-pointer-sign
5756
5757 # add some linker flags
5758 check_ldflags -Wl,--warn-common
5759 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5760 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5761 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5762 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5763
5764 # add some strip flags
5765 # -wN '..@*' is more selective than -x, but not available everywhere.
5766 check_stripflags -wN \'..@*\' || check_stripflags -x
5767
5768 enabled neon_clobber_test &&
5769     check_ldflags -Wl,--wrap,avcodec_open2              \
5770                   -Wl,--wrap,avcodec_decode_audio4      \
5771                   -Wl,--wrap,avcodec_decode_video2      \
5772                   -Wl,--wrap,avcodec_decode_subtitle2   \
5773                   -Wl,--wrap,avcodec_encode_audio2      \
5774                   -Wl,--wrap,avcodec_encode_video2      \
5775                   -Wl,--wrap,avcodec_encode_subtitle    \
5776                   -Wl,--wrap,swr_convert                \
5777                   -Wl,--wrap,avresample_convert ||
5778     disable neon_clobber_test
5779
5780 enabled xmm_clobber_test &&
5781     check_ldflags -Wl,--wrap,avcodec_open2              \
5782                   -Wl,--wrap,avcodec_decode_audio4      \
5783                   -Wl,--wrap,avcodec_decode_video2      \
5784                   -Wl,--wrap,avcodec_decode_subtitle2   \
5785                   -Wl,--wrap,avcodec_encode_audio2      \
5786                   -Wl,--wrap,avcodec_encode_video2      \
5787                   -Wl,--wrap,avcodec_encode_subtitle    \
5788                   -Wl,--wrap,swr_convert                \
5789                   -Wl,--wrap,avresample_convert         \
5790                   -Wl,--wrap,sws_scale ||
5791     disable xmm_clobber_test
5792
5793 echo "X { local: *; };" > $TMPV
5794 if test_ldflags -Wl,--version-script,$TMPV; then
5795     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5796 elif test_ldflags -Wl,-M,$TMPV; then
5797     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5798 fi
5799
5800 check_cc <<EOF && enable symver_asm_label
5801 void ff_foo(void) __asm__ ("av_foo@VERSION");
5802 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5803 EOF
5804     check_cc <<EOF && enable symver_gnu_asm
5805 __asm__(".symver ff_foo,av_foo@VERSION");
5806 void ff_foo(void) {}
5807 EOF
5808
5809 if [ -z "$optflags" ]; then
5810     if enabled small; then
5811         optflags=$cflags_size
5812     elif enabled optimizations; then
5813         optflags=$cflags_speed
5814     else
5815         optflags=$cflags_noopt
5816     fi
5817 fi
5818
5819 check_optflags(){
5820     check_cflags "$@"
5821     enabled lto && check_ldflags "$@"
5822 }
5823
5824
5825 if enabled lto; then
5826     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5827     check_cflags  -flto
5828     check_ldflags -flto $cpuflags
5829     disable inline_asm_direct_symbol_refs
5830 fi
5831
5832 check_optflags $optflags
5833 check_optflags -fno-math-errno
5834 check_optflags -fno-signed-zeros
5835
5836 enabled ftrapv && check_cflags -ftrapv
5837
5838 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5839 int x;
5840 EOF
5841
5842
5843 if enabled icc; then
5844     # Just warnings, no remarks
5845     check_cflags -w1
5846     # -wd: Disable following warnings
5847     # 144, 167, 556: -Wno-pointer-sign
5848     # 188: enumerated type mixed with another type
5849     # 1292: attribute "foo" ignored
5850     # 1419: external declaration in primary source file
5851     # 10006: ignoring unknown option -fno-signed-zeros
5852     # 10148: ignoring unknown option -Wno-parentheses
5853     # 10156: ignoring option '-W'; no argument required
5854     # 13200: No EMMS instruction before call to function
5855     # 13203: No EMMS instruction before return from function
5856     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5857     # 11030: Warning unknown option --as-needed
5858     # 10156: ignoring option '-export'; no argument required
5859     check_ldflags -wd10156,11030
5860     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5861     enable ebp_available
5862     # The test above does not test linking
5863     enabled lto && disable symver_asm_label
5864     if enabled x86_32; then
5865         icc_version=$($cc -dumpversion)
5866         test ${icc_version%%.*} -ge 11 &&
5867             check_cflags -falign-stack=maintain-16-byte ||
5868             disable aligned_stack
5869     fi
5870 elif enabled ccc; then
5871     # disable some annoying warnings
5872     add_cflags -msg_disable bitnotint
5873     add_cflags -msg_disable mixfuncvoid
5874     add_cflags -msg_disable nonstandcast
5875     add_cflags -msg_disable unsupieee
5876 elif enabled gcc; then
5877     check_optflags -fno-tree-vectorize
5878     check_cflags -Werror=format-security
5879     check_cflags -Werror=implicit-function-declaration
5880     check_cflags -Werror=missing-prototypes
5881     check_cflags -Werror=return-type
5882     check_cflags -Werror=vla
5883     check_cflags -Wformat
5884     check_cflags -fdiagnostics-color=auto
5885     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5886 elif enabled llvm_gcc; then
5887     check_cflags -mllvm -stack-alignment=16
5888 elif enabled clang; then
5889     check_cflags -mllvm -stack-alignment=16
5890     check_cflags -Qunused-arguments
5891     check_cflags -Werror=implicit-function-declaration
5892     check_cflags -Werror=missing-prototypes
5893     check_cflags -Werror=return-type
5894 elif enabled cparser; then
5895     add_cflags -Wno-missing-variable-declarations
5896     add_cflags -Wno-empty-statement
5897 elif enabled armcc; then
5898     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5899     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5900     # 2523: use of inline assembly is deprecated
5901     add_cflags -W${armcc_opt},--diag_suppress=2523
5902     add_cflags -W${armcc_opt},--diag_suppress=1207
5903     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5904     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5905     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5906     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5907 elif enabled tms470; then
5908     add_cflags -pds=824 -pds=837
5909     disable inline_asm
5910 elif enabled pathscale; then
5911     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5912 elif enabled_any msvc icl; then
5913     enabled x86_32 && disable aligned_stack
5914     enabled_all x86_32 debug && add_cflags -Oy-
5915     enabled debug && add_ldflags -debug
5916     enable pragma_deprecated
5917     if enabled icl; then
5918         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5919         # (correctly) on icl 13.x.
5920         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5921             add_cflags -Qansi-alias
5922         # Some inline asm is not compilable in debug
5923         if enabled debug; then
5924             disable ebp_available
5925             disable ebx_available
5926         fi
5927     fi
5928     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5929     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5930     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5931     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5932     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5933     # MSVC 2013 and newer can handle it fine.
5934     # If this declspec fails, force including stdlib.h before the restrict redefinition
5935     # happens in config.h.
5936     if [ $_restrict != restrict ]; then
5937         check_cc <<EOF || add_cflags -FIstdlib.h
5938 __declspec($_restrict) void* foo(int);
5939 EOF
5940     fi
5941     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5942 fi
5943
5944 for pfx in "" host_; do
5945     varname=${pfx%_}cc_type
5946     eval "type=\$$varname"
5947     if [ $type = "msvc" ]; then
5948         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5949 static inline int foo(int a) { return a; }
5950 EOF
5951     fi
5952 done
5953
5954 case $as_type in
5955     clang)
5956         add_asflags -Qunused-arguments
5957     ;;
5958 esac
5959
5960 case $ld_type in
5961     clang)
5962         check_ldflags -Qunused-arguments
5963     ;;
5964 esac
5965
5966 case $target_os in
5967     osf1)
5968         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5969     ;;
5970     plan9)
5971         add_cppflags -Dmain=plan9_main
5972     ;;
5973 esac
5974
5975 enable frame_thread_encoder
5976
5977 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5978
5979 check_deps $CONFIG_LIST       \
5980            $CONFIG_EXTRA      \
5981            $HAVE_LIST         \
5982            $ALL_COMPONENTS    \
5983
5984 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"
5985
5986
5987 if test $target_os = "haiku"; then
5988     disable memalign
5989     disable posix_memalign
5990 fi
5991
5992 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5993     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5994     enable dxva2_lib
5995
5996 ! enabled_any memalign posix_memalign aligned_malloc &&
5997     enabled simd_align_16 && enable memalign_hack
5998
5999 # add_dep lib dep
6000 # -> enable ${lib}_deps_${dep}
6001 # -> add $dep to ${lib}_deps only once
6002 add_dep() {
6003     lib=$1
6004     dep=$2
6005     enabled "${lib}_deps_${dep}" && return 0
6006     enable  "${lib}_deps_${dep}"
6007     prepend "${lib}_deps" $dep
6008 }
6009
6010 # merge deps lib components
6011 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6012 merge_deps() {
6013     lib=$1
6014     shift
6015     for comp in $*; do
6016         enabled $comp || continue
6017         eval "dep=\"\$${comp}_deps\""
6018         for d in $dep; do
6019             add_dep $lib $d
6020         done
6021     done
6022 }
6023
6024 merge_deps libavfilter $FILTER_LIST
6025
6026 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6027
6028 for thread in $THREADS_LIST; do
6029     if enabled $thread; then
6030         test -n "$thread_type" &&
6031             die "ERROR: Only one thread type must be selected." ||
6032             thread_type="$thread"
6033     fi
6034 done
6035
6036 enabled zlib && add_cppflags -DZLIB_CONST
6037
6038 # conditional library dependencies, in linking order
6039 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6040 enabled aresample_filter    && prepend avfilter_deps "swresample"
6041 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6042 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6043 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6044 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6045 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6046 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6047 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6048 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6049 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6050 enabled pan_filter          && prepend avfilter_deps "swresample"
6051 enabled pp_filter           && prepend avfilter_deps "postproc"
6052 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6053 enabled resample_filter && prepend avfilter_deps "avresample"
6054 enabled sab_filter          && prepend avfilter_deps "swscale"
6055 enabled scale_filter    && prepend avfilter_deps "swscale"
6056 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6057 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6058 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6059 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6060 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6061 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6062 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6063
6064 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6065
6066 enabled opus_decoder    && prepend avcodec_deps "swresample"
6067
6068 expand_deps(){
6069     lib_deps=${1}_deps
6070     eval "deps=\$$lib_deps"
6071     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6072     unique $lib_deps
6073 }
6074
6075 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6076 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6077
6078 map 'expand_deps $v' $LIBRARY_LIST
6079
6080 echo "install prefix            $prefix"
6081 echo "source path               $source_path"
6082 echo "C compiler                $cc"
6083 echo "C library                 $libc_type"
6084 if test "$host_cc" != "$cc"; then
6085     echo "host C compiler           $host_cc"
6086     echo "host C library            $host_libc_type"
6087 fi
6088 echo "ARCH                      $arch ($cpu)"
6089 if test "$build_suffix" != ""; then
6090     echo "build suffix              $build_suffix"
6091 fi
6092 if test "$progs_suffix" != ""; then
6093     echo "progs suffix              $progs_suffix"
6094 fi
6095 if test "$extra_version" != ""; then
6096     echo "version string suffix     $extra_version"
6097 fi
6098 echo "big-endian                ${bigendian-no}"
6099 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6100 if enabled x86; then
6101     echo "${yasmexe}                      ${yasm-no}"
6102     echo "MMX enabled               ${mmx-no}"
6103     echo "MMXEXT enabled            ${mmxext-no}"
6104     echo "3DNow! enabled            ${amd3dnow-no}"
6105     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6106     echo "SSE enabled               ${sse-no}"
6107     echo "SSSE3 enabled             ${ssse3-no}"
6108     echo "AESNI enabled             ${aesni-no}"
6109     echo "AVX enabled               ${avx-no}"
6110     echo "XOP enabled               ${xop-no}"
6111     echo "FMA3 enabled              ${fma3-no}"
6112     echo "FMA4 enabled              ${fma4-no}"
6113     echo "i686 features enabled     ${i686-no}"
6114     echo "CMOV is fast              ${fast_cmov-no}"
6115     echo "EBX available             ${ebx_available-no}"
6116     echo "EBP available             ${ebp_available-no}"
6117 fi
6118 if enabled aarch64; then
6119     echo "NEON enabled              ${neon-no}"
6120     echo "VFP enabled               ${vfp-no}"
6121 fi
6122 if enabled arm; then
6123     echo "ARMv5TE enabled           ${armv5te-no}"
6124     echo "ARMv6 enabled             ${armv6-no}"
6125     echo "ARMv6T2 enabled           ${armv6t2-no}"
6126     echo "VFP enabled               ${vfp-no}"
6127     echo "NEON enabled              ${neon-no}"
6128     echo "THUMB enabled             ${thumb-no}"
6129 fi
6130 if enabled mips; then
6131     echo "MIPS FPU enabled          ${mipsfpu-no}"
6132     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6133     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6134     echo "MIPS MSA enabled          ${msa-no}"
6135     echo "LOONGSON MMI enabled      ${mmi-no}"
6136 fi
6137 if enabled ppc; then
6138     echo "AltiVec enabled           ${altivec-no}"
6139     echo "VSX enabled               ${vsx-no}"
6140     echo "POWER8 enabled            ${power8-no}"
6141     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6142     echo "dcbzl available           ${dcbzl-no}"
6143 fi
6144 echo "debug symbols             ${debug-no}"
6145 echo "strip symbols             ${stripping-no}"
6146 echo "optimize for size         ${small-no}"
6147 echo "optimizations             ${optimizations-no}"
6148 echo "static                    ${static-no}"
6149 echo "shared                    ${shared-no}"
6150 echo "postprocessing support    ${postproc-no}"
6151 echo "new filter support        ${avfilter-no}"
6152 echo "network support           ${network-no}"
6153 echo "threading support         ${thread_type-no}"
6154 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6155 echo "SDL support               ${sdl-no}"
6156 echo "opencl enabled            ${opencl-no}"
6157 echo "texi2html enabled         ${texi2html-no}"
6158 echo "perl enabled              ${perl-no}"
6159 echo "pod2man enabled           ${pod2man-no}"
6160 echo "makeinfo enabled          ${makeinfo-no}"
6161 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6162 test -n "$random_seed" &&
6163     echo "random seed               ${random_seed}"
6164 echo
6165
6166 echo "Enabled programs:"
6167 print_enabled '' $PROGRAM_LIST | print_in_columns
6168 echo
6169
6170 echo "External libraries:"
6171 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6172 echo
6173
6174 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6175     echo "Enabled ${type}s:"
6176     eval list=\$$(toupper $type)_LIST
6177     print_enabled '_*' $list | print_in_columns
6178     echo
6179 done
6180
6181 license="LGPL version 2.1 or later"
6182 if enabled nonfree; then
6183     license="nonfree and unredistributable"
6184 elif enabled gplv3; then
6185     license="GPL version 3 or later"
6186 elif enabled lgplv3; then
6187     license="LGPL version 3 or later"
6188 elif enabled gpl; then
6189     license="GPL version 2 or later"
6190 fi
6191
6192 echo "License: $license"
6193
6194 echo "Creating config.mak, config.h, and doc/config.texi..."
6195
6196 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6197
6198 enabled stripping || strip="echo skipping strip"
6199
6200 config_files="$TMPH config.mak doc/config.texi"
6201
6202 cat > config.mak <<EOF
6203 # Automatically generated by configure - do not modify!
6204 ifndef FFMPEG_CONFIG_MAK
6205 FFMPEG_CONFIG_MAK=1
6206 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6207 prefix=$prefix
6208 LIBDIR=\$(DESTDIR)$libdir
6209 SHLIBDIR=\$(DESTDIR)$shlibdir
6210 INCDIR=\$(DESTDIR)$incdir
6211 BINDIR=\$(DESTDIR)$bindir
6212 DATADIR=\$(DESTDIR)$datadir
6213 DOCDIR=\$(DESTDIR)$docdir
6214 MANDIR=\$(DESTDIR)$mandir
6215 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6216 SRC_PATH=$source_path
6217 ifndef MAIN_MAKEFILE
6218 SRC_PATH:=\$(SRC_PATH:.%=..%)
6219 endif
6220 CC_IDENT=$cc_ident
6221 ARCH=$arch
6222 INTRINSICS=$intrinsics
6223 CC=$cc
6224 CXX=$cxx
6225 AS=$as
6226 OBJCC=$objcc
6227 LD=$ld
6228 DEPCC=$dep_cc
6229 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6230 DEPAS=$as
6231 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6232 YASM=$yasmexe
6233 DEPYASM=$yasmexe
6234 AR=$ar
6235 ARFLAGS=$arflags
6236 AR_O=$ar_o
6237 RANLIB=$ranlib
6238 STRIP=$strip
6239 CP=cp -p
6240 LN_S=$ln_s
6241 CPPFLAGS=$CPPFLAGS
6242 CFLAGS=$CFLAGS
6243 CXXFLAGS=$CXXFLAGS
6244 OBJCFLAGS=$OBJCFLAGS
6245 ASFLAGS=$ASFLAGS
6246 AS_C=$AS_C
6247 AS_O=$AS_O
6248 OBJCC_C=$OBJCC_C
6249 OBJCC_E=$OBJCC_E
6250 OBJCC_O=$OBJCC_O
6251 CC_C=$CC_C
6252 CC_E=$CC_E
6253 CC_O=$CC_O
6254 CXX_C=$CXX_C
6255 CXX_O=$CXX_O
6256 LD_O=$LD_O
6257 LD_LIB=$LD_LIB
6258 LD_PATH=$LD_PATH
6259 DLLTOOL=$dlltool
6260 WINDRES=$windres
6261 DEPWINDRES=$dep_cc
6262 DOXYGEN=$doxygen
6263 LDFLAGS=$LDFLAGS
6264 LDEXEFLAGS=$LDEXEFLAGS
6265 LDLIBFLAGS=$LDLIBFLAGS
6266 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6267 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6268 YASMFLAGS=$YASMFLAGS
6269 BUILDSUF=$build_suffix
6270 PROGSSUF=$progs_suffix
6271 FULLNAME=$FULLNAME
6272 LIBPREF=$LIBPREF
6273 LIBSUF=$LIBSUF
6274 LIBNAME=$LIBNAME
6275 SLIBPREF=$SLIBPREF
6276 SLIBSUF=$SLIBSUF
6277 EXESUF=$EXESUF
6278 EXTRA_VERSION=$extra_version
6279 CCDEP=$CCDEP
6280 CXXDEP=$CXXDEP
6281 CCDEP_FLAGS=$CCDEP_FLAGS
6282 ASDEP=$ASDEP
6283 ASDEP_FLAGS=$ASDEP_FLAGS
6284 CC_DEPFLAGS=$CC_DEPFLAGS
6285 AS_DEPFLAGS=$AS_DEPFLAGS
6286 HOSTCC=$host_cc
6287 HOSTLD=$host_ld
6288 HOSTCFLAGS=$host_cflags
6289 HOSTCPPFLAGS=$host_cppflags
6290 HOSTEXESUF=$HOSTEXESUF
6291 HOSTLDFLAGS=$host_ldflags
6292 HOSTLIBS=$host_libs
6293 DEPHOSTCC=$host_cc
6294 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6295 HOSTCCDEP=$HOSTCCDEP
6296 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6297 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6298 HOSTCC_C=$HOSTCC_C
6299 HOSTCC_O=$HOSTCC_O
6300 HOSTLD_O=$HOSTLD_O
6301 TARGET_EXEC=$target_exec $target_exec_args
6302 TARGET_PATH=$target_path
6303 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6304 CFLAGS-ffplay=$sdl_cflags
6305 ZLIB=$($ldflags_filter -lz)
6306 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6307 EXTRALIBS=$extralibs
6308 COMPAT_OBJS=$compat_objs
6309 EXEOBJS=$exeobjs
6310 INSTALL=$install
6311 LIBTARGET=${LIBTARGET}
6312 SLIBNAME=${SLIBNAME}
6313 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6314 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6315 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6316 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6317 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6318 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6319 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6320 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6321 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6322 NOREDZONE_FLAGS=$noredzone_flags
6323 EOF
6324
6325 get_version(){
6326     lcname=lib${1}
6327     name=$(toupper $lcname)
6328     file=$source_path/$lcname/version.h
6329     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6330     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6331     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6332     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6333     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6334     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6335 }
6336
6337 map 'get_version $v' $LIBRARY_LIST
6338
6339 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6340
6341 print_program_libs(){
6342     eval "program_libs=\$${1}_libs"
6343     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6344 }
6345
6346 map 'print_program_libs $v' $PROGRAM_LIST
6347
6348 cat > $TMPH <<EOF
6349 /* Automatically generated by configure - do not modify! */
6350 #ifndef FFMPEG_CONFIG_H
6351 #define FFMPEG_CONFIG_H
6352 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6353 #define FFMPEG_LICENSE "$(c_escape $license)"
6354 #define CONFIG_THIS_YEAR 2015
6355 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6356 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6357 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6358 #define av_restrict $_restrict
6359 #define EXTERN_PREFIX "${extern_prefix}"
6360 #define EXTERN_ASM ${extern_prefix}
6361 #define BUILDSUF "$build_suffix"
6362 #define SLIBSUF "$SLIBSUF"
6363 #define HAVE_MMX2 HAVE_MMXEXT
6364 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6365 EOF
6366
6367 test -n "$assert_level" &&
6368     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6369
6370 test -n "$malloc_prefix" &&
6371     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6372
6373 if enabled yasm; then
6374     append config_files $TMPASM
6375     printf '' >$TMPASM
6376 fi
6377
6378 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6379
6380
6381 mkdir -p doc
6382 mkdir -p tests
6383 mkdir -p tests/api
6384 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6385
6386 print_config ARCH_   "$config_files" $ARCH_LIST
6387 print_config HAVE_   "$config_files" $HAVE_LIST
6388 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6389                                      $CONFIG_EXTRA      \
6390                                      $ALL_COMPONENTS    \
6391
6392 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6393 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6394
6395 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6396 cp_if_changed $TMPH config.h
6397 touch .config
6398
6399 enabled yasm && cp_if_changed $TMPASM config.asm
6400
6401 cat > $TMPH <<EOF
6402 /* Generated by ffconf */
6403 #ifndef AVUTIL_AVCONFIG_H
6404 #define AVUTIL_AVCONFIG_H
6405 EOF
6406
6407 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6408
6409 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6410
6411 cp_if_changed $TMPH libavutil/avconfig.h
6412
6413 if test -n "$WARNINGS"; then
6414     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6415     enabled fatal_warnings && exit 1
6416 fi
6417
6418 # build pkg-config files
6419
6420 lib_version(){
6421     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6422 }
6423
6424 pkgconfig_generate(){
6425     name=$1
6426     shortname=${name#lib}${build_suffix}
6427     comment=$2
6428     version=$3
6429     libs=$4
6430     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6431     requires=${requires%, }
6432     enabled ${name#lib} || return 0
6433     mkdir -p $name
6434     cat <<EOF > $name/$name${build_suffix}.pc
6435 prefix=$prefix
6436 exec_prefix=\${prefix}
6437 libdir=$libdir
6438 includedir=$incdir
6439
6440 Name: $name
6441 Description: $comment
6442 Version: $version
6443 Requires: $(enabled shared || echo $requires)
6444 Requires.private: $(enabled shared && echo $requires)
6445 Conflicts:
6446 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6447 Libs.private: $(enabled shared && echo $libs)
6448 Cflags: -I\${includedir}
6449 EOF
6450
6451 mkdir -p doc/examples/pc-uninstalled
6452 includedir=${source_path}
6453 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6454     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6455 prefix=
6456 exec_prefix=
6457 libdir=\${pcfiledir}/../../../$name
6458 includedir=${includedir}
6459
6460 Name: $name
6461 Description: $comment
6462 Version: $version
6463 Requires: $requires
6464 Conflicts:
6465 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6466 Cflags: -I\${includedir}
6467 EOF
6468 }
6469
6470 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6471 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6472 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6473 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6474 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6475 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6476 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6477 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6478 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"