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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-d3d11va        disable D3D11VA code [autodetect]
 153   --disable-dxva2          disable DXVA2 code [autodetect]
 154   --disable-vaapi          disable VAAPI code [autodetect]
 155   --disable-vda            disable VDA code [autodetect]
 156   --disable-vdpau          disable VDPAU code [autodetect]
 157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 201   --enable-frei0r          enable frei0r video filtering [no]
 202   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 203                            if openssl, librtmp or gmp is not used [no]
 204   --enable-gmp             enable gmp, needed for rtmp(t)e support
 205                            if openssl or librtmp is not used [no]
 206   --enable-gnutls          enable gnutls, needed for https support
 207                            if openssl is not used [no]
 208   --disable-iconv          disable iconv [autodetect]
 209   --enable-ladspa          enable LADSPA audio filtering [no]
 210   --enable-libass          enable libass subtitles rendering,
 211                            needed for subtitles and ass filter [no]
 212   --enable-libbluray       enable BluRay reading using libbluray [no]
 213   --enable-libbs2b         enable bs2b DSP library [no]
 214   --enable-libcaca         enable textual display using libcaca [no]
 215   --enable-libcelt         enable CELT decoding via libcelt [no]
 216   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 217   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 218                            and libraw1394 [no]
 219   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 220   --enable-libfaac         enable AAC encoding via libfaac [no]
 221   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 222   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 223   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 224   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 225   --enable-libgme          enable Game Music Emu via libgme [no]
 226   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 227   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 228   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 229   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 230   --enable-libmfx          enable HW acceleration through libmfx
 231   --enable-libmodplug      enable ModPlug via libmodplug [no]
 232   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 233   --enable-libnut          enable NUT (de)muxing via libnut,
 234                            native (de)muxer exists [no]
 235   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 236   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 237   --enable-libopencv       enable video filtering via libopencv [no]
 238   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 239   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 240   --enable-libopus         enable Opus de/encoding via libopus [no]
 241   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 242   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 243   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 244   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 245   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 246   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 247   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 248   --enable-libsoxr         enable Include libsoxr resampling [no]
 249   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 250   --enable-libssh          enable SFTP protocol via libssh [no]
 251   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 252   --enable-libtheora       enable Theora encoding via libtheora [no]
 253   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 254   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 255   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 256   --enable-libvidstab      enable video stabilization using vid.stab [no]
 257   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 258   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 259                            native implementation exists [no]
 260   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 261   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 262   --enable-libwebp         enable WebP encoding via libwebp [no]
 263   --enable-libx264         enable H.264 encoding via x264 [no]
 264   --enable-libx265         enable HEVC encoding via x265 [no]
 265   --enable-libxavs         enable AVS encoding via xavs [no]
 266   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 267   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 268   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 269   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 270   --enable-libxvid         enable Xvid encoding via xvidcore,
 271                            native MPEG-4/Xvid encoder exists [no]
 272   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 273   --enable-libzmq          enable message passing via libzmq [no]
 274   --enable-libzvbi         enable teletext support via libzvbi [no]
 275   --disable-lzma           disable lzma [autodetect]
 276   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 277   --enable-mmal            enable decoding via MMAL [no]
 278   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 279   --enable-nvenc           enable NVIDIA NVENC support [no]
 280   --enable-openal          enable OpenAL 1.1 capture support [no]
 281   --enable-opencl          enable OpenCL code
 282   --enable-opengl          enable OpenGL rendering [no]
 283   --enable-openssl         enable openssl, needed for https support
 284                            if gnutls is not used [no]
 285   --disable-schannel       disable SChannel SSP, needed for TLS support on
 286                            Windows if openssl and gnutls are not used [autodetect]
 287   --disable-sdl            disable sdl [autodetect]
 288   --disable-securetransport disable Secure Transport, needed for TLS support
 289                            on OSX if openssl and gnutls are not used [autodetect]
 290   --enable-x11grab         enable X11 grabbing (legacy) [no]
 291   --disable-xlib           disable xlib [autodetect]
 292   --disable-zlib           disable zlib [autodetect]
 293
 294 Toolchain options:
 295   --arch=ARCH              select architecture [$arch]
 296   --cpu=CPU                select the minimum required CPU (affects
 297                            instruction selection, may crash on older CPUs)
 298   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 299   --progs-suffix=SUFFIX    program name suffix []
 300   --enable-cross-compile   assume a cross-compiler is used
 301   --sysroot=PATH           root of cross-build tree
 302   --sysinclude=PATH        location of cross-build system headers
 303   --target-os=OS           compiler targets OS [$target_os]
 304   --target-exec=CMD        command to run executables on target
 305   --target-path=DIR        path to view of build directory on target
 306   --target-samples=DIR     path to samples directory on target
 307   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 308   --toolchain=NAME         set tool defaults according to NAME
 309   --nm=NM                  use nm tool NM [$nm_default]
 310   --ar=AR                  use archive tool AR [$ar_default]
 311   --as=AS                  use assembler AS [$as_default]
 312   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 313   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 314   --cc=CC                  use C compiler CC [$cc_default]
 315   --cxx=CXX                use C compiler CXX [$cxx_default]
 316   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 317   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 318   --ld=LD                  use linker LD [$ld_default]
 319   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 320   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 321   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 322   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 323   --host-cc=HOSTCC         use host C compiler HOSTCC
 324   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 325   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 326   --host-ld=HOSTLD         use host linker HOSTLD
 327   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 328   --host-libs=HLIBS        use libs HLIBS when linking for host
 329   --host-os=OS             compiler host OS [$target_os]
 330   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 331   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 332   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 333   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 334   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 335   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 336   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 337   --extra-version=STRING   version string suffix []
 338   --optflags=OPTFLAGS      override optimization-related compiler flags
 339   --build-suffix=SUFFIX    library name suffix []
 340   --enable-pic             build position-independent code
 341   --enable-thumb           compile for Thumb instruction set
 342   --enable-lto             use link-time optimization
 343   --env="ENV=override"     override the environment variables
 344
 345 Advanced options (experts only):
 346   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 347   --custom-allocator=NAME  use a supported custom allocator
 348   --disable-symver         disable symbol versioning
 349   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 350   --disable-safe-bitstream-reader
 351                            disable buffer boundary checking in bitreaders
 352                            (faster, but may crash)
 353   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 354   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 355
 356 Optimization options (experts only):
 357   --disable-asm            disable all assembly optimizations
 358   --disable-altivec        disable AltiVec optimizations
 359   --disable-vsx            disable VSX optimizations
 360   --disable-power8         disable POWER8 optimizations
 361   --disable-amd3dnow       disable 3DNow! optimizations
 362   --disable-amd3dnowext    disable 3DNow! extended optimizations
 363   --disable-mmx            disable MMX optimizations
 364   --disable-mmxext         disable MMXEXT optimizations
 365   --disable-sse            disable SSE optimizations
 366   --disable-sse2           disable SSE2 optimizations
 367   --disable-sse3           disable SSE3 optimizations
 368   --disable-ssse3          disable SSSE3 optimizations
 369   --disable-sse4           disable SSE4 optimizations
 370   --disable-sse42          disable SSE4.2 optimizations
 371   --disable-avx            disable AVX optimizations
 372   --disable-xop            disable XOP optimizations
 373   --disable-fma3           disable FMA3 optimizations
 374   --disable-fma4           disable FMA4 optimizations
 375   --disable-avx2           disable AVX2 optimizations
 376   --disable-aesni          disable AESNI optimizations
 377   --disable-armv5te        disable armv5te optimizations
 378   --disable-armv6          disable armv6 optimizations
 379   --disable-armv6t2        disable armv6t2 optimizations
 380   --disable-vfp            disable VFP optimizations
 381   --disable-neon           disable NEON optimizations
 382   --disable-inline-asm     disable use of inline assembly
 383   --disable-yasm           disable use of nasm/yasm assembly
 384   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 385   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 386   --disable-msa            disable MSA optimizations
 387   --disable-mipsfpu        disable floating point MIPS optimizations
 388   --disable-mmi            disable Loongson SIMD optimizations
 389   --disable-fast-unaligned consider unaligned accesses slow
 390
 391 Developer options (useful when working on FFmpeg itself):
 392   --disable-debug          disable debugging symbols
 393   --enable-debug=LEVEL     set the debug level [$debuglevel]
 394   --disable-optimizations  disable compiler optimizations
 395   --enable-extra-warnings  enable more compiler warnings
 396   --disable-stripping      disable stripping of executables and shared libraries
 397   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 398                            2 causes a slowdown at runtime.
 399   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 400   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 401                            leaks and errors, using the specified valgrind binary.
 402                            Cannot be combined with --target-exec
 403   --enable-ftrapv          Trap arithmetic overflows
 404   --samples=PATH           location of test samples for FATE, if not set use
 405                            \$FATE_SAMPLES at make invocation time.
 406   --enable-neon-clobber-test check NEON registers for clobbering (should be
 407                            used only for debugging purposes)
 408   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 409                            should be used only for debugging purposes)
 410   --enable-random          randomly enable/disable components
 411   --disable-random
 412   --enable-random=LIST     randomly enable/disable specific components or
 413   --disable-random=LIST    component groups. LIST is a comma-separated list
 414                            of NAME[:PROB] entries where NAME is a component
 415                            (group) and PROB the probability associated with
 416                            NAME (default 0.5).
 417   --random-seed=VALUE      seed value for --enable/disable-random
 418   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 419                            (only applies to --disable-optimizations builds)
 420
 421 NOTE: Object files are built at the place where configure is launched.
 422 EOF
 423   exit 0
 424 }
 425
 426 quotes='""'
 427 if test -t 1 && which tput >/dev/null 2>&1; then
 428     ncolors=$(tput colors)
 429     if test -n "$ncolors" && test $ncolors -ge 8; then
 430         bold_color=$(tput bold)
 431         warn_color=$(tput setaf 3)
 432         error_color=$(tput setaf 1)
 433         reset_color=$(tput sgr0)
 434     fi
 435     # 72 used instead of 80 since that's the default of pr
 436     ncols=$(tput cols)
 437 fi
 438 : ${ncols:=72}
 439
 440 log(){
 441     echo "$@" >> $logfile
 442 }
 443
 444 log_file(){
 445     log BEGIN $1
 446     pr -n -t $1 >> $logfile
 447     log END $1
 448 }
 449
 450 warn(){
 451     log "WARNING: $*"
 452     WARNINGS="${WARNINGS}WARNING: $*\n"
 453 }
 454
 455 die(){
 456     log "$@"
 457     echo "$error_color$bold_color$@$reset_color"
 458     cat <<EOF
 459
 460 If you think configure made a mistake, make sure you are using the latest
 461 version from Git.  If the latest version fails, report the problem to the
 462 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 463 EOF
 464     if disabled logging; then
 465         cat <<EOF
 466 Rerun configure with logging enabled (do not use --disable-logging), and
 467 include the log this produces with your report.
 468 EOF
 469     else
 470         cat <<EOF
 471 Include the log file "$logfile" produced by configure as this will help
 472 solve the problem.
 473 EOF
 474     fi
 475     exit 1
 476 }
 477
 478 # Avoid locale weirdness, besides we really just want to translate ASCII.
 479 toupper(){
 480     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 481 }
 482
 483 tolower(){
 484     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 485 }
 486
 487 c_escape(){
 488     echo "$*" | sed 's/["\\]/\\\0/g'
 489 }
 490
 491 sh_quote(){
 492     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 493     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 494     echo "$v"
 495 }
 496
 497 cleanws(){
 498     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 499 }
 500
 501 filter(){
 502     pat=$1
 503     shift
 504     for v; do
 505         eval "case $v in $pat) echo $v ;; esac"
 506     done
 507 }
 508
 509 filter_out(){
 510     pat=$1
 511     shift
 512     for v; do
 513         eval "case $v in $pat) ;; *) echo $v ;; esac"
 514     done
 515 }
 516
 517 map(){
 518     m=$1
 519     shift
 520     for v; do eval $m; done
 521 }
 522
 523 add_suffix(){
 524     suffix=$1
 525     shift
 526     for v; do echo ${v}${suffix}; done
 527 }
 528
 529 set_all(){
 530     value=$1
 531     shift
 532     for var in $*; do
 533         eval $var=$value
 534     done
 535 }
 536
 537 set_weak(){
 538     value=$1
 539     shift
 540     for var; do
 541         eval : \${$var:=$value}
 542     done
 543 }
 544
 545 sanitize_var_name(){
 546     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 547 }
 548
 549 set_safe(){
 550     var=$1
 551     shift
 552     eval $(sanitize_var_name "$var")='$*'
 553 }
 554
 555 get_safe(){
 556     eval echo \$$(sanitize_var_name "$1")
 557 }
 558
 559 pushvar(){
 560     for pvar in $*; do
 561         eval level=\${${pvar}_level:=0}
 562         eval ${pvar}_${level}="\$$pvar"
 563         eval ${pvar}_level=$(($level+1))
 564     done
 565 }
 566
 567 popvar(){
 568     for pvar in $*; do
 569         eval level=\${${pvar}_level:-0}
 570         test $level = 0 && continue
 571         eval level=$(($level-1))
 572         eval $pvar="\${${pvar}_${level}}"
 573         eval ${pvar}_level=$level
 574         eval unset ${pvar}_${level}
 575     done
 576 }
 577
 578 enable(){
 579     set_all yes $*
 580 }
 581
 582 disable(){
 583     set_all no $*
 584 }
 585
 586 enable_weak(){
 587     set_weak yes $*
 588 }
 589
 590 disable_weak(){
 591     set_weak no $*
 592 }
 593
 594 enable_safe(){
 595     for var; do
 596         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 597     done
 598 }
 599
 600 disable_safe(){
 601     for var; do
 602         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 603     done
 604 }
 605
 606 do_enable_deep(){
 607     for var; do
 608         enabled $var && continue
 609         eval sel="\$${var}_select"
 610         eval sgs="\$${var}_suggest"
 611         pushvar var sgs
 612         enable_deep $sel
 613         popvar sgs
 614         enable_deep_weak $sgs
 615         popvar var
 616     done
 617 }
 618
 619 enable_deep(){
 620     do_enable_deep $*
 621     enable $*
 622 }
 623
 624 enable_deep_weak(){
 625     for var; do
 626         disabled $var && continue
 627         pushvar var
 628         do_enable_deep $var
 629         popvar var
 630         enable_weak $var
 631     done
 632 }
 633
 634 enabled(){
 635     test "${1#!}" = "$1" && op='=' || op=!=
 636     eval test "x\$${1#!}" $op "xyes"
 637 }
 638
 639 disabled(){
 640     test "${1#!}" = "$1" && op='=' || op=!=
 641     eval test "x\$${1#!}" $op "xno"
 642 }
 643
 644 enabled_all(){
 645     for opt; do
 646         enabled $opt || return 1
 647     done
 648 }
 649
 650 disabled_all(){
 651     for opt; do
 652         disabled $opt || return 1
 653     done
 654 }
 655
 656 enabled_any(){
 657     for opt; do
 658         enabled $opt && return 0
 659     done
 660 }
 661
 662 disabled_any(){
 663     for opt; do
 664         disabled $opt && return 0
 665     done
 666     return 1
 667 }
 668
 669 set_default(){
 670     for opt; do
 671         eval : \${$opt:=\$${opt}_default}
 672     done
 673 }
 674
 675 is_in(){
 676     value=$1
 677     shift
 678     for var in $*; do
 679         [ $var = $value ] && return 0
 680     done
 681     return 1
 682 }
 683
 684 do_check_deps(){
 685     for cfg; do
 686         cfg="${cfg#!}"
 687         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 688         disabled ${cfg}_checking && continue
 689         enable ${cfg}_checking
 690         append allopts $cfg
 691
 692         eval dep_all="\$${cfg}_deps"
 693         eval dep_any="\$${cfg}_deps_any"
 694         eval dep_sel="\$${cfg}_select"
 695         eval dep_sgs="\$${cfg}_suggest"
 696         eval dep_ifa="\$${cfg}_if"
 697         eval dep_ifn="\$${cfg}_if_any"
 698
 699         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 700         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 701         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 702
 703         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 704         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 705         enabled_all  $dep_all || disable $cfg
 706         enabled_any  $dep_any || disable $cfg
 707         disabled_any $dep_sel && disable $cfg
 708
 709         if enabled $cfg; then
 710             enable_deep $dep_sel
 711             enable_deep_weak $dep_sgs
 712         fi
 713
 714         disable ${cfg}_checking
 715     done
 716 }
 717
 718 check_deps(){
 719     unset allopts
 720
 721     do_check_deps "$@"
 722
 723     for cfg in $allopts; do
 724         enabled $cfg || continue
 725         eval dep_extralibs="\$${cfg}_extralibs"
 726         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 727     done
 728 }
 729
 730 print_config(){
 731     pfx=$1
 732     files=$2
 733     shift 2
 734     map 'eval echo "$v \${$v:-no}"' "$@" |
 735     awk "BEGIN { split(\"$files\", files) }
 736         {
 737             c = \"$pfx\" toupper(\$1);
 738             v = \$2;
 739             sub(/yes/, 1, v);
 740             sub(/no/,  0, v);
 741             for (f in files) {
 742                 file = files[f];
 743                 if (file ~ /\\.h\$/) {
 744                     printf(\"#define %s %d\\n\", c, v) >>file;
 745                 } else if (file ~ /\\.asm\$/) {
 746                     printf(\"%%define %s %d\\n\", c, v) >>file;
 747                 } else if (file ~ /\\.mak\$/) {
 748                     n = -v ? \"\" : \"!\";
 749                     printf(\"%s%s=yes\\n\", n, c) >>file;
 750                 } else if (file ~ /\\.texi\$/) {
 751                     pre = -v ? \"\" : \"@c \";
 752                     yesno = \$2;
 753                     c2 = tolower(c);
 754                     gsub(/_/, \"-\", c2);
 755                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 756                 }
 757             }
 758         }"
 759 }
 760
 761 print_enabled(){
 762     suf=$1
 763     shift
 764     for v; do
 765         enabled $v && printf "%s\n" ${v%$suf};
 766     done
 767 }
 768
 769 append(){
 770     var=$1
 771     shift
 772     eval "$var=\"\$$var $*\""
 773 }
 774
 775 prepend(){
 776     var=$1
 777     shift
 778     eval "$var=\"$* \$$var\""
 779 }
 780
 781 unique(){
 782     var=$1
 783     uniq_list=""
 784     for tok in $(eval echo \$$var); do
 785         uniq_list="$(filter_out $tok $uniq_list) $tok"
 786     done
 787     eval "$var=\"${uniq_list}\""
 788 }
 789
 790 add_cppflags(){
 791     append CPPFLAGS "$@"
 792 }
 793
 794 add_cflags(){
 795     append CFLAGS $($cflags_filter "$@")
 796 }
 797
 798 add_cxxflags(){
 799     append CXXFLAGS $($cflags_filter "$@")
 800 }
 801
 802 add_asflags(){
 803     append ASFLAGS $($asflags_filter "$@")
 804 }
 805
 806 add_objcflags(){
 807     append OBJCFLAGS $($objcflags_filter "$@")
 808 }
 809
 810 add_ldflags(){
 811     append LDFLAGS $($ldflags_filter "$@")
 812 }
 813
 814 add_ldexeflags(){
 815     append LDEXEFLAGS $($ldflags_filter "$@")
 816 }
 817
 818 add_ldlibflags(){
 819     append LDLIBFLAGS $($ldflags_filter "$@")
 820 }
 821
 822 add_stripflags(){
 823     append ASMSTRIPFLAGS "$@"
 824 }
 825
 826 add_extralibs(){
 827     prepend extralibs $($ldflags_filter "$@")
 828 }
 829
 830 add_host_cppflags(){
 831     append host_cppflags "$@"
 832 }
 833
 834 add_host_cflags(){
 835     append host_cflags $($host_cflags_filter "$@")
 836 }
 837
 838 add_host_ldflags(){
 839     append host_ldflags $($host_ldflags_filter "$@")
 840 }
 841
 842 add_compat(){
 843     append compat_objs $1
 844     shift
 845     map 'add_cppflags -D$v' "$@"
 846 }
 847
 848 check_cmd(){
 849     log "$@"
 850     "$@" >> $logfile 2>&1
 851 }
 852
 853 check_stat(){
 854     log check_stat "$@"
 855     stat "$1" >> $logfile 2>&1
 856 }
 857
 858 cc_o(){
 859     eval printf '%s\\n' $CC_O
 860 }
 861
 862 cc_e(){
 863     eval printf '%s\\n' $CC_E
 864 }
 865
 866 check_cc(){
 867     log check_cc "$@"
 868     cat > $TMPC
 869     log_file $TMPC
 870     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 871 }
 872
 873 check_cxx(){
 874     log check_cxx "$@"
 875     cat > $TMPCPP
 876     log_file $TMPCPP
 877     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 878 }
 879
 880 check_objcc(){
 881     log check_objcc "$@"
 882     cat > $TMPM
 883     log_file $TMPM
 884     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 885 }
 886
 887 check_cpp(){
 888     log check_cpp "$@"
 889     cat > $TMPC
 890     log_file $TMPC
 891     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 892 }
 893
 894 as_o(){
 895     eval printf '%s\\n' $AS_O
 896 }
 897
 898 check_as(){
 899     log check_as "$@"
 900     cat > $TMPS
 901     log_file $TMPS
 902     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 903 }
 904
 905 check_inline_asm(){
 906     log check_inline_asm "$@"
 907     name="$1"
 908     code="$2"
 909     shift 2
 910     disable $name
 911     check_cc "$@" <<EOF && enable $name
 912 void foo(void){ __asm__ volatile($code); }
 913 EOF
 914 }
 915
 916 check_insn(){
 917     log check_insn "$@"
 918     check_inline_asm ${1}_inline "\"$2\""
 919     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 920 }
 921
 922 check_yasm(){
 923     log check_yasm "$@"
 924     echo "$1" > $TMPS
 925     log_file $TMPS
 926     shift 1
 927     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 928 }
 929
 930 ld_o(){
 931     eval printf '%s\\n' $LD_O
 932 }
 933
 934 check_ld(){
 935     log check_ld "$@"
 936     type=$1
 937     shift 1
 938     flags=$(filter_out '-l*|*.so' $@)
 939     libs=$(filter '-l*|*.so' $@)
 940     check_$type $($cflags_filter $flags) || return
 941     flags=$($ldflags_filter $flags)
 942     libs=$($ldflags_filter $libs)
 943     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 944 }
 945
 946 print_include(){
 947     hdr=$1
 948     test "${hdr%.h}" = "${hdr}" &&
 949         echo "#include $hdr"    ||
 950         echo "#include <$hdr>"
 951 }
 952
 953 check_code(){
 954     log check_code "$@"
 955     check=$1
 956     headers=$2
 957     code=$3
 958     shift 3
 959     {
 960         for hdr in $headers; do
 961             print_include $hdr
 962         done
 963         echo "int main(void) { $code; return 0; }"
 964     } | check_$check "$@"
 965 }
 966
 967 check_cppflags(){
 968     log check_cppflags "$@"
 969     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 970 int x;
 971 EOF
 972 }
 973
 974 test_cflags(){
 975     log test_cflags "$@"
 976     set -- $($cflags_filter "$@")
 977     check_cc "$@" <<EOF
 978 int x;
 979 EOF
 980 }
 981
 982 check_cflags(){
 983     log check_cflags "$@"
 984     test_cflags "$@" && add_cflags "$@"
 985 }
 986
 987 check_cxxflags(){
 988     log check_cxxflags "$@"
 989     set -- $($cflags_filter "$@")
 990     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 991 int x;
 992 EOF
 993 }
 994
 995 test_objcflags(){
 996     log test_cflags "$@"
 997     set -- $($cflags_filter "$@")
 998     check_objcc "$@" <<EOF
 999 int x;
1000 EOF
1001 }
1002
1003 check_objcflags(){
1004     log check_cflags "$@"
1005     test_objcflags "$@" && add_objcflags "$@"
1006 }
1007
1008 test_ldflags(){
1009     log test_ldflags "$@"
1010     check_ld "cc" "$@" <<EOF
1011 int main(void){ return 0; }
1012 EOF
1013 }
1014
1015 check_ldflags(){
1016     log check_ldflags "$@"
1017     test_ldflags "$@" && add_ldflags "$@"
1018 }
1019
1020 test_stripflags(){
1021     log test_stripflags "$@"
1022     # call check_cc to get a fresh TMPO
1023     check_cc <<EOF
1024 int main(void) { return 0; }
1025 EOF
1026     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1027 }
1028
1029 check_stripflags(){
1030     log check_stripflags "$@"
1031     test_stripflags "$@" && add_stripflags "$@"
1032 }
1033
1034 check_header(){
1035     log check_header "$@"
1036     header=$1
1037     shift
1038     disable_safe $header
1039     check_cpp "$@" <<EOF && enable_safe $header
1040 #include <$header>
1041 int x;
1042 EOF
1043 }
1044
1045 check_header_objcc(){
1046     log check_header_objcc "$@"
1047     rm -f -- "$TMPO"
1048     header=$1
1049     shift
1050     disable_safe $header
1051     {
1052        echo "#include <$header>"
1053        echo "int main(void) { return 0; }"
1054     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1055 }
1056
1057 check_func(){
1058     log check_func "$@"
1059     func=$1
1060     shift
1061     disable $func
1062     check_ld "cc" "$@" <<EOF && enable $func
1063 extern int $func();
1064 int main(void){ $func(); }
1065 EOF
1066 }
1067
1068 check_complexfunc(){
1069     log check_complexfunc "$@"
1070     func=$1
1071     narg=$2
1072     shift 2
1073     test $narg = 2 && args="f, g" || args="f * I"
1074     disable $func
1075     check_ld "cc" "$@" <<EOF && enable $func
1076 #include <complex.h>
1077 #include <math.h>
1078 float foo(complex float f, complex float g) { return $func($args); }
1079 int main(void){ return (int) foo; }
1080 EOF
1081 }
1082
1083 check_mathfunc(){
1084     log check_mathfunc "$@"
1085     func=$1
1086     narg=$2
1087     shift 2
1088     test $narg = 2 && args="f, g" || args="f"
1089     disable $func
1090     check_ld "cc" "$@" <<EOF && enable $func
1091 #include <math.h>
1092 float foo(float f, float g) { return $func($args); }
1093 int main(void){ return (int) foo; }
1094 EOF
1095 }
1096
1097 check_func_headers(){
1098     log check_func_headers "$@"
1099     headers=$1
1100     funcs=$2
1101     shift 2
1102     {
1103         for hdr in $headers; do
1104             print_include $hdr
1105         done
1106         for func in $funcs; do
1107             echo "long check_$func(void) { return (long) $func; }"
1108         done
1109         echo "int main(void) { return 0; }"
1110     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1111 }
1112
1113 check_class_headers_cpp(){
1114     log check_class_headers_cpp "$@"
1115     headers=$1
1116     classes=$2
1117     shift 2
1118     {
1119         for hdr in $headers; do
1120             echo "#include <$hdr>"
1121         done
1122         echo "int main(void) { "
1123         i=1
1124         for class in $classes; do
1125             echo "$class obj$i;"
1126             i=$(expr $i + 1)
1127         done
1128         echo "return 0; }"
1129     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1130 }
1131
1132 check_cpp_condition(){
1133     log check_cpp_condition "$@"
1134     header=$1
1135     condition=$2
1136     shift 2
1137     check_cpp "$@" <<EOF
1138 #include <$header>
1139 #if !($condition)
1140 #error "unsatisfied condition: $condition"
1141 #endif
1142 EOF
1143 }
1144
1145 check_lib(){
1146     log check_lib "$@"
1147     header="$1"
1148     func="$2"
1149     shift 2
1150     check_header $header && check_func $func "$@" && add_extralibs "$@"
1151 }
1152
1153 check_lib2(){
1154     log check_lib2 "$@"
1155     headers="$1"
1156     funcs="$2"
1157     shift 2
1158     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1159 }
1160
1161 check_lib_cpp(){
1162     log check_lib_cpp "$@"
1163     headers="$1"
1164     classes="$2"
1165     shift 2
1166     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1167 }
1168
1169 check_pkg_config(){
1170     log check_pkg_config "$@"
1171     pkgandversion="$1"
1172     pkg="${1%% *}"
1173     headers="$2"
1174     funcs="$3"
1175     shift 3
1176     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1177     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1178     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1179     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1180         set_safe "${pkg}_cflags" $pkg_cflags   &&
1181         set_safe "${pkg}_libs"   $pkg_libs
1182 }
1183
1184 check_exec(){
1185     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1186 }
1187
1188 check_exec_crash(){
1189     code=$(cat)
1190
1191     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1192     # are safe but may not be available everywhere.  Thus we use
1193     # raise(SIGTERM) instead.  The check is run in a subshell so we
1194     # can redirect the "Terminated" message from the shell.  SIGBUS
1195     # is not defined by standard C so it is used conditionally.
1196
1197     (check_exec "$@") >> $logfile 2>&1 <<EOF
1198 #include <signal.h>
1199 static void sighandler(int sig){
1200     raise(SIGTERM);
1201 }
1202 int foo(void){
1203     $code
1204 }
1205 int (*func_ptr)(void) = foo;
1206 int main(void){
1207     signal(SIGILL, sighandler);
1208     signal(SIGFPE, sighandler);
1209     signal(SIGSEGV, sighandler);
1210 #ifdef SIGBUS
1211     signal(SIGBUS, sighandler);
1212 #endif
1213     return func_ptr();
1214 }
1215 EOF
1216 }
1217
1218 check_type(){
1219     log check_type "$@"
1220     headers=$1
1221     type=$2
1222     shift 2
1223     disable_safe "$type"
1224     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1225 }
1226
1227 check_struct(){
1228     log check_struct "$@"
1229     headers=$1
1230     struct=$2
1231     member=$3
1232     shift 3
1233     disable_safe "${struct}_${member}"
1234     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1235         enable_safe "${struct}_${member}"
1236 }
1237
1238 check_builtin(){
1239     log check_builtin "$@"
1240     name=$1
1241     headers=$2
1242     builtin=$3
1243     shift 3
1244     disable "$name"
1245     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1246 }
1247
1248 check_compile_assert(){
1249     log check_compile_assert "$@"
1250     name=$1
1251     headers=$2
1252     condition=$3
1253     shift 3
1254     disable "$name"
1255     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1256 }
1257
1258 require(){
1259     name="$1"
1260     header="$2"
1261     func="$3"
1262     shift 3
1263     check_lib $header $func "$@" || die "ERROR: $name not found"
1264 }
1265
1266 require2(){
1267     name="$1"
1268     headers="$2"
1269     func="$3"
1270     shift 3
1271     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1272 }
1273
1274 require_cpp(){
1275     name="$1"
1276     headers="$2"
1277     classes="$3"
1278     shift 3
1279     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1280 }
1281
1282 use_pkg_config(){
1283     pkg="$1"
1284     check_pkg_config "$@" || return 1
1285     add_cflags    $(get_safe "${pkg}_cflags")
1286     add_extralibs $(get_safe "${pkg}_libs")
1287 }
1288
1289 require_pkg_config(){
1290     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1291 }
1292
1293 require_libfreetype(){
1294     log require_libfreetype "$@"
1295     pkg="freetype2"
1296     check_cmd $pkg_config --exists --print-errors $pkg \
1297       || die "ERROR: $pkg not found"
1298     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1299     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1300     {
1301         echo "#include <ft2build.h>"
1302         echo "#include FT_FREETYPE_H"
1303         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1304         echo "int main(void) { return 0; }"
1305     } | check_ld "cc" $pkg_cflags $pkg_libs \
1306       && set_safe "${pkg}_cflags" $pkg_cflags \
1307       && set_safe "${pkg}_libs"   $pkg_libs \
1308       || die "ERROR: $pkg not found"
1309     add_cflags    $(get_safe "${pkg}_cflags")
1310     add_extralibs $(get_safe "${pkg}_libs")
1311 }
1312
1313 hostcc_e(){
1314     eval printf '%s\\n' $HOSTCC_E
1315 }
1316
1317 hostcc_o(){
1318     eval printf '%s\\n' $HOSTCC_O
1319 }
1320
1321 check_host_cc(){
1322     log check_host_cc "$@"
1323     cat > $TMPC
1324     log_file $TMPC
1325     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1326 }
1327
1328 check_host_cpp(){
1329     log check_host_cpp "$@"
1330     cat > $TMPC
1331     log_file $TMPC
1332     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1333 }
1334
1335 check_host_cppflags(){
1336     log check_host_cppflags "$@"
1337     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1338 int x;
1339 EOF
1340 }
1341
1342 check_host_cflags(){
1343     log check_host_cflags "$@"
1344     set -- $($host_cflags_filter "$@")
1345     check_host_cc "$@" <<EOF && append host_cflags "$@"
1346 int x;
1347 EOF
1348 }
1349
1350 check_host_cpp_condition(){
1351     log check_host_cpp_condition "$@"
1352     header=$1
1353     condition=$2
1354     shift 2
1355     check_host_cpp "$@" <<EOF
1356 #include <$header>
1357 #if !($condition)
1358 #error "unsatisfied condition: $condition"
1359 #endif
1360 EOF
1361 }
1362
1363 cp_if_changed(){
1364     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1365     mkdir -p "$(dirname $2)"
1366     $cp_f "$1" "$2"
1367 }
1368
1369 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1370 # system-dependent things.
1371
1372 AVCODEC_COMPONENTS="
1373     bsfs
1374     decoders
1375     encoders
1376     hwaccels
1377     parsers
1378 "
1379
1380 AVDEVICE_COMPONENTS="
1381     indevs
1382     outdevs
1383 "
1384 AVFILTER_COMPONENTS="
1385     filters
1386 "
1387 AVFORMAT_COMPONENTS="
1388     demuxers
1389     muxers
1390     protocols
1391 "
1392
1393 AVRESAMPLE_COMPONENTS=""
1394 AVUTIL_COMPONENTS=""
1395
1396 COMPONENT_LIST="
1397     $AVCODEC_COMPONENTS
1398     $AVDEVICE_COMPONENTS
1399     $AVFILTER_COMPONENTS
1400     $AVFORMAT_COMPONENTS
1401     $AVRESAMPLE_COMPONENTS
1402     $AVUTIL_COMPONENTS
1403 "
1404
1405 EXAMPLE_LIST="
1406     avio_reading_example
1407     avio_dir_cmd_example
1408     decoding_encoding_example
1409     demuxing_decoding_example
1410     extract_mvs_example
1411     filter_audio_example
1412     filtering_audio_example
1413     filtering_video_example
1414     metadata_example
1415     muxing_example
1416     qsvdec_example
1417     remuxing_example
1418     resampling_audio_example
1419     scaling_video_example
1420     transcode_aac_example
1421     transcoding_example
1422 "
1423
1424 EXTERNAL_LIBRARY_LIST="
1425     avisynth
1426     bzlib
1427     chromaprint
1428     crystalhd
1429     decklink
1430     frei0r
1431     gcrypt
1432     gmp
1433     gnutls
1434     iconv
1435     ladspa
1436     libass
1437     libbluray
1438     libbs2b
1439     libcaca
1440     libcdio
1441     libcelt
1442     libdc1394
1443     libdcadec
1444     libfaac
1445     libfdk_aac
1446     libflite
1447     libfontconfig
1448     libfreetype
1449     libfribidi
1450     libgme
1451     libgsm
1452     libiec61883
1453     libilbc
1454     libkvazaar
1455     libmfx
1456     libmodplug
1457     libmp3lame
1458     libnut
1459     libopencore_amrnb
1460     libopencore_amrwb
1461     libopencv
1462     libopenh264
1463     libopenjpeg
1464     libopus
1465     libpulse
1466     librtmp
1467     librubberband
1468     libschroedinger
1469     libshine
1470     libsmbclient
1471     libsnappy
1472     libsoxr
1473     libspeex
1474     libssh
1475     libtesseract
1476     libtheora
1477     libtwolame
1478     libutvideo
1479     libv4l2
1480     libvidstab
1481     libvo_amrwbenc
1482     libvorbis
1483     libvpx
1484     libwavpack
1485     libwebp
1486     libx264
1487     libx265
1488     libxavs
1489     libxcb
1490     libxcb_shm
1491     libxcb_shape
1492     libxcb_xfixes
1493     libxvid
1494     libzimg
1495     libzmq
1496     libzvbi
1497     lzma
1498     mmal
1499     netcdf
1500     nvenc
1501     openal
1502     opencl
1503     opengl
1504     openssl
1505     schannel
1506     sdl
1507     securetransport
1508     x11grab
1509     xlib
1510     zlib
1511 "
1512
1513 DOCUMENT_LIST="
1514     doc
1515     htmlpages
1516     manpages
1517     podpages
1518     txtpages
1519 "
1520
1521 FEATURE_LIST="
1522     ftrapv
1523     gray
1524     hardcoded_tables
1525     runtime_cpudetect
1526     safe_bitstream_reader
1527     shared
1528     small
1529     static
1530     swscale_alpha
1531 "
1532
1533 HWACCEL_LIST="
1534     d3d11va
1535     dxva2
1536     vaapi
1537     vda
1538     vdpau
1539     videotoolbox
1540     xvmc
1541 "
1542
1543 LIBRARY_LIST="
1544     avcodec
1545     avdevice
1546     avfilter
1547     avformat
1548     avresample
1549     avutil
1550     postproc
1551     swresample
1552     swscale
1553 "
1554
1555 LICENSE_LIST="
1556     gpl
1557     nonfree
1558     version3
1559 "
1560
1561 PROGRAM_LIST="
1562     ffplay
1563     ffprobe
1564     ffserver
1565     ffmpeg
1566 "
1567
1568 SUBSYSTEM_LIST="
1569     dct
1570     dwt
1571     error_resilience
1572     faan
1573     fast_unaligned
1574     fft
1575     lsp
1576     lzo
1577     mdct
1578     pixelutils
1579     network
1580     rdft
1581 "
1582
1583 CONFIG_LIST="
1584     $COMPONENT_LIST
1585     $DOCUMENT_LIST
1586     $EXAMPLE_LIST
1587     $EXTERNAL_LIBRARY_LIST
1588     $FEATURE_LIST
1589     $HWACCEL_LIST
1590     $LICENSE_LIST
1591     $LIBRARY_LIST
1592     $PROGRAM_LIST
1593     $SUBSYSTEM_LIST
1594     fontconfig
1595     incompatible_libav_abi
1596     memalign_hack
1597     memory_poisoning
1598     neon_clobber_test
1599     pic
1600     pod2man
1601     raise_major
1602     thumb
1603     valgrind_backtrace
1604     xmm_clobber_test
1605 "
1606
1607 THREADS_LIST="
1608     pthreads
1609     os2threads
1610     w32threads
1611 "
1612
1613 ATOMICS_LIST="
1614     atomics_gcc
1615     atomics_suncc
1616     atomics_win32
1617 "
1618
1619 ARCH_LIST="
1620     aarch64
1621     alpha
1622     arm
1623     avr32
1624     avr32_ap
1625     avr32_uc
1626     bfin
1627     ia64
1628     m68k
1629     mips
1630     mips64
1631     parisc
1632     ppc
1633     ppc64
1634     s390
1635     sh4
1636     sparc
1637     sparc64
1638     tilegx
1639     tilepro
1640     tomi
1641     x86
1642     x86_32
1643     x86_64
1644 "
1645
1646 ARCH_EXT_LIST_ARM="
1647     armv5te
1648     armv6
1649     armv6t2
1650     armv8
1651     neon
1652     vfp
1653     vfpv3
1654     setend
1655 "
1656
1657 ARCH_EXT_LIST_MIPS="
1658     mipsfpu
1659     mips32r2
1660     mips64r2
1661     mips32r6
1662     mips64r6
1663     mipsdsp
1664     mipsdspr2
1665     msa
1666 "
1667
1668 ARCH_EXT_LIST_LOONGSON="
1669     loongson2
1670     loongson3
1671     mmi
1672 "
1673
1674 ARCH_EXT_LIST_X86_SIMD="
1675     aesni
1676     amd3dnow
1677     amd3dnowext
1678     avx
1679     avx2
1680     fma3
1681     fma4
1682     mmx
1683     mmxext
1684     sse
1685     sse2
1686     sse3
1687     sse4
1688     sse42
1689     ssse3
1690     xop
1691 "
1692
1693 ARCH_EXT_LIST_PPC="
1694     altivec
1695     dcbzl
1696     ldbrx
1697     power8
1698     ppc4xx
1699     vsx
1700 "
1701
1702 ARCH_EXT_LIST_X86="
1703     $ARCH_EXT_LIST_X86_SIMD
1704     cpunop
1705     i686
1706 "
1707
1708 ARCH_EXT_LIST="
1709     $ARCH_EXT_LIST_ARM
1710     $ARCH_EXT_LIST_PPC
1711     $ARCH_EXT_LIST_X86
1712     $ARCH_EXT_LIST_MIPS
1713     $ARCH_EXT_LIST_LOONGSON
1714 "
1715
1716 ARCH_FEATURES="
1717     aligned_stack
1718     fast_64bit
1719     fast_clz
1720     fast_cmov
1721     local_aligned_8
1722     local_aligned_16
1723     local_aligned_32
1724     simd_align_16
1725 "
1726
1727 BUILTIN_LIST="
1728     atomic_cas_ptr
1729     atomic_compare_exchange
1730     machine_rw_barrier
1731     MemoryBarrier
1732     mm_empty
1733     rdtsc
1734     sarestart
1735     sync_val_compare_and_swap
1736 "
1737 HAVE_LIST_CMDLINE="
1738     inline_asm
1739     symver
1740     yasm
1741 "
1742
1743 HAVE_LIST_PUB="
1744     bigendian
1745     fast_unaligned
1746     incompatible_libav_abi
1747 "
1748
1749 HEADERS_LIST="
1750     alsa_asoundlib_h
1751     altivec_h
1752     arpa_inet_h
1753     asm_types_h
1754     cdio_paranoia_h
1755     cdio_paranoia_paranoia_h
1756     dev_bktr_ioctl_bt848_h
1757     dev_bktr_ioctl_meteor_h
1758     dev_ic_bt8xx_h
1759     dev_video_bktr_ioctl_bt848_h
1760     dev_video_meteor_ioctl_meteor_h
1761     direct_h
1762     dirent_h
1763     dlfcn_h
1764     d3d11_h
1765     dxva_h
1766     ES2_gl_h
1767     gsm_h
1768     io_h
1769     mach_mach_time_h
1770     machine_ioctl_bt848_h
1771     machine_ioctl_meteor_h
1772     malloc_h
1773     opencv2_core_core_c_h
1774     openjpeg_2_1_openjpeg_h
1775     openjpeg_2_0_openjpeg_h
1776     openjpeg_1_5_openjpeg_h
1777     OpenGL_gl3_h
1778     poll_h
1779     sndio_h
1780     soundcard_h
1781     sys_mman_h
1782     sys_param_h
1783     sys_resource_h
1784     sys_select_h
1785     sys_soundcard_h
1786     sys_time_h
1787     sys_un_h
1788     sys_videoio_h
1789     termios_h
1790     udplite_h
1791     unistd_h
1792     valgrind_valgrind_h
1793     windows_h
1794     winsock2_h
1795 "
1796
1797 INTRINSICS_LIST="
1798     intrinsics_neon
1799 "
1800
1801 COMPLEX_FUNCS="
1802     cabs
1803     cexp
1804 "
1805
1806 MATH_FUNCS="
1807     atanf
1808     atan2f
1809     cbrt
1810     cbrtf
1811     copysign
1812     cosf
1813     erf
1814     exp2
1815     exp2f
1816     expf
1817     hypot
1818     isfinite
1819     isinf
1820     isnan
1821     ldexpf
1822     llrint
1823     llrintf
1824     log2
1825     log2f
1826     log10f
1827     lrint
1828     lrintf
1829     powf
1830     rint
1831     round
1832     roundf
1833     sinf
1834     trunc
1835     truncf
1836 "
1837
1838 SYSTEM_FUNCS="
1839     access
1840     aligned_malloc
1841     arc4random
1842     clock_gettime
1843     closesocket
1844     CommandLineToArgvW
1845     CoTaskMemFree
1846     CryptGenRandom
1847     dlopen
1848     fcntl
1849     flt_lim
1850     fork
1851     getaddrinfo
1852     gethrtime
1853     getopt
1854     GetProcessAffinityMask
1855     GetProcessMemoryInfo
1856     GetProcessTimes
1857     getrusage
1858     GetSystemTimeAsFileTime
1859     gettimeofday
1860     glob
1861     glXGetProcAddress
1862     gmtime_r
1863     inet_aton
1864     isatty
1865     jack_port_get_latency_range
1866     kbhit
1867     localtime_r
1868     lstat
1869     lzo1x_999_compress
1870     mach_absolute_time
1871     MapViewOfFile
1872     memalign
1873     mkstemp
1874     mmap
1875     mprotect
1876     nanosleep
1877     PeekNamedPipe
1878     posix_memalign
1879     pthread_cancel
1880     sched_getaffinity
1881     SetConsoleTextAttribute
1882     SetConsoleCtrlHandler
1883     setmode
1884     setrlimit
1885     Sleep
1886     strerror_r
1887     sysconf
1888     sysctl
1889     usleep
1890     UTGetOSTypeFromString
1891     VirtualAlloc
1892     wglGetProcAddress
1893 "
1894
1895 TOOLCHAIN_FEATURES="
1896     as_dn_directive
1897     as_func
1898     as_object_arch
1899     asm_mod_q
1900     attribute_may_alias
1901     attribute_packed
1902     ebp_available
1903     ebx_available
1904     gnu_as
1905     gnu_windres
1906     ibm_asm
1907     inline_asm_direct_symbol_refs
1908     inline_asm_labels
1909     inline_asm_nonlocal_labels
1910     pragma_deprecated
1911     rsync_contimeout
1912     symver_asm_label
1913     symver_gnu_asm
1914     vfp_args
1915     xform_asm
1916     xmm_clobbers
1917 "
1918
1919 TYPES_LIST="
1920     CONDITION_VARIABLE_Ptr
1921     socklen_t
1922     struct_addrinfo
1923     struct_group_source_req
1924     struct_ip_mreq_source
1925     struct_ipv6_mreq
1926     struct_pollfd
1927     struct_rusage_ru_maxrss
1928     struct_sctp_event_subscribe
1929     struct_sockaddr_in6
1930     struct_sockaddr_sa_len
1931     struct_sockaddr_storage
1932     struct_stat_st_mtim_tv_nsec
1933     struct_v4l2_frmivalenum_discrete
1934 "
1935
1936 HAVE_LIST="
1937     $ARCH_EXT_LIST
1938     $(add_suffix _external $ARCH_EXT_LIST)
1939     $(add_suffix _inline   $ARCH_EXT_LIST)
1940     $ARCH_FEATURES
1941     $ATOMICS_LIST
1942     $BUILTIN_LIST
1943     $COMPLEX_FUNCS
1944     $HAVE_LIST_CMDLINE
1945     $HAVE_LIST_PUB
1946     $HEADERS_LIST
1947     $INTRINSICS_LIST
1948     $MATH_FUNCS
1949     $SYSTEM_FUNCS
1950     $THREADS_LIST
1951     $TOOLCHAIN_FEATURES
1952     $TYPES_LIST
1953     atomics_native
1954     dos_paths
1955     dxva2_lib
1956     dxva2api_cobj
1957     libc_msvcrt
1958     libdc1394_1
1959     libdc1394_2
1960     makeinfo
1961     makeinfo_html
1962     perl
1963     pod2man
1964     sdl
1965     section_data_rel_ro
1966     texi2html
1967     threads
1968     vaapi_x11
1969     vdpau_x11
1970     winrt
1971     xlib
1972 "
1973
1974 # options emitted with CONFIG_ prefix but not available on the command line
1975 CONFIG_EXTRA="
1976     aandcttables
1977     ac3dsp
1978     audio_frame_queue
1979     audiodsp
1980     blockdsp
1981     bswapdsp
1982     cabac
1983     dirac_parse
1984     dvprofile
1985     exif
1986     faandct
1987     faanidct
1988     fdctdsp
1989     flacdsp
1990     fmtconvert
1991     frame_thread_encoder
1992     g722dsp
1993     golomb
1994     gplv3
1995     h263dsp
1996     h264chroma
1997     h264dsp
1998     h264pred
1999     h264qpel
2000     hpeldsp
2001     huffman
2002     huffyuvdsp
2003     huffyuvencdsp
2004     idctdsp
2005     iirfilter
2006     imdct15
2007     intrax8
2008     ividsp
2009     jpegtables
2010     lgplv3
2011     libx262
2012     llauddsp
2013     llviddsp
2014     lpc
2015     lzf
2016     me_cmp
2017     mpeg_er
2018     mpegaudio
2019     mpegaudiodsp
2020     mpegvideo
2021     mpegvideoenc
2022     mss34dsp
2023     pixblockdsp
2024     qpeldsp
2025     qsv
2026     qsvdec
2027     qsvenc
2028     rangecoder
2029     riffdec
2030     riffenc
2031     rtpdec
2032     rtpenc_chain
2033     rv34dsp
2034     sinewin
2035     snappy
2036     startcode
2037     texturedsp
2038     texturedspenc
2039     tpeldsp
2040     videodsp
2041     vp3dsp
2042     vp56dsp
2043     vp8dsp
2044     wma_freqs
2045     wmv2dsp
2046 "
2047
2048 CMDLINE_SELECT="
2049     $ARCH_EXT_LIST
2050     $CONFIG_LIST
2051     $HAVE_LIST_CMDLINE
2052     $THREADS_LIST
2053     asm
2054     cross_compile
2055     debug
2056     extra_warnings
2057     logging
2058     lto
2059     optimizations
2060     rpath
2061     stripping
2062 "
2063
2064 PATHS_LIST="
2065     bindir
2066     datadir
2067     docdir
2068     incdir
2069     libdir
2070     mandir
2071     pkgconfigdir
2072     prefix
2073     shlibdir
2074 "
2075
2076 CMDLINE_SET="
2077     $PATHS_LIST
2078     ar
2079     arch
2080     as
2081     assert_level
2082     build_suffix
2083     cc
2084     objcc
2085     cpu
2086     cross_prefix
2087     custom_allocator
2088     cxx
2089     dep_cc
2090     doxygen
2091     env
2092     extra_version
2093     gas
2094     host_cc
2095     host_cflags
2096     host_ld
2097     host_ldflags
2098     host_libs
2099     host_os
2100     install
2101     ld
2102     logfile
2103     malloc_prefix
2104     nm
2105     optflags
2106     pkg_config
2107     pkg_config_flags
2108     progs_suffix
2109     random_seed
2110     ranlib
2111     samples
2112     strip
2113     sws_max_filter_size
2114     sysinclude
2115     sysroot
2116     target_exec
2117     target_os
2118     target_path
2119     target_samples
2120     tempprefix
2121     toolchain
2122     valgrind
2123     yasmexe
2124 "
2125
2126 CMDLINE_APPEND="
2127     extra_cflags
2128     extra_cxxflags
2129     extra_objcflags
2130     host_cppflags
2131 "
2132
2133 # code dependency declarations
2134
2135 # architecture extensions
2136
2137 armv5te_deps="arm"
2138 armv6_deps="arm"
2139 armv6t2_deps="arm"
2140 armv8_deps="aarch64"
2141 neon_deps_any="aarch64 arm"
2142 intrinsics_neon_deps="neon"
2143 vfp_deps_any="aarch64 arm"
2144 vfpv3_deps="vfp"
2145 setend_deps="arm"
2146
2147 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2148
2149 mipsfpu_deps="mips"
2150 mipsdsp_deps="mips"
2151 mipsdspr2_deps="mips"
2152 mips32r2_deps="mips"
2153 mips32r6_deps="mips"
2154 mips64r2_deps="mips"
2155 mips64r6_deps="mips"
2156 msa_deps="mips"
2157 mmi_deps="mips"
2158
2159 altivec_deps="ppc"
2160 dcbzl_deps="ppc"
2161 ldbrx_deps="ppc"
2162 ppc4xx_deps="ppc"
2163 vsx_deps="altivec"
2164 power8_deps="vsx"
2165
2166 cpunop_deps="i686"
2167 x86_64_select="i686"
2168 x86_64_suggest="fast_cmov"
2169
2170 amd3dnow_deps="mmx"
2171 amd3dnowext_deps="amd3dnow"
2172 i686_deps="x86"
2173 mmx_deps="x86"
2174 mmxext_deps="mmx"
2175 sse_deps="mmxext"
2176 sse2_deps="sse"
2177 sse3_deps="sse2"
2178 ssse3_deps="sse3"
2179 sse4_deps="ssse3"
2180 sse42_deps="sse4"
2181 aesni_deps="sse42"
2182 avx_deps="sse42"
2183 xop_deps="avx"
2184 fma3_deps="avx"
2185 fma4_deps="avx"
2186 avx2_deps="avx"
2187
2188 mmx_external_deps="yasm"
2189 mmx_inline_deps="inline_asm"
2190 mmx_suggest="mmx_external mmx_inline"
2191
2192 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2193     eval dep=\$${ext}_deps
2194     eval ${ext}_external_deps='"${dep}_external"'
2195     eval ${ext}_inline_deps='"${dep}_inline"'
2196     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2197 done
2198
2199 aligned_stack_if_any="aarch64 ppc x86"
2200 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2201 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2202 fast_unaligned_if_any="aarch64 ppc x86"
2203 simd_align_16_if_any="altivec neon sse"
2204
2205 # system capabilities
2206 symver_if_any="symver_asm_label symver_gnu_asm"
2207 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2208
2209 # threading support
2210 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2211 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2212 atomics_win32_if="MemoryBarrier"
2213 atomics_native_if_any="$ATOMICS_LIST"
2214 w32threads_deps="atomics_native"
2215 threads_if_any="$THREADS_LIST"
2216
2217 # subsystems
2218 dct_select="rdft"
2219 dirac_parse_select="golomb"
2220 error_resilience_select="me_cmp"
2221 faandct_deps="faan fdctdsp"
2222 faanidct_deps="faan idctdsp"
2223 frame_thread_encoder_deps="encoders threads"
2224 intrax8_select="error_resilience"
2225 mdct_select="fft"
2226 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2227 mpeg_er_select="error_resilience"
2228 mpegaudio_select="mpegaudiodsp"
2229 mpegaudiodsp_select="dct"
2230 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2231 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2232 qsvdec_select="qsv"
2233 qsvenc_select="qsv"
2234 rdft_select="fft"
2235
2236 # decoders / encoders
2237 aac_decoder_select="imdct15 mdct sinewin"
2238 aac_fixed_decoder_select="mdct sinewin"
2239 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2240 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2241 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2242 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2243 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2244 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2245 adpcm_g722_decoder_select="g722dsp"
2246 adpcm_g722_encoder_select="g722dsp"
2247 aic_decoder_select="golomb idctdsp"
2248 alac_encoder_select="lpc"
2249 als_decoder_select="bswapdsp"
2250 amrnb_decoder_select="lsp"
2251 amrwb_decoder_select="lsp"
2252 amv_decoder_select="sp5x_decoder exif"
2253 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2254 ape_decoder_select="bswapdsp llauddsp"
2255 apng_decoder_select="zlib"
2256 apng_encoder_select="huffyuvencdsp zlib"
2257 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2258 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2259 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2260 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2261 atrac1_decoder_select="mdct sinewin"
2262 atrac3_decoder_select="mdct"
2263 atrac3p_decoder_select="mdct sinewin"
2264 avrn_decoder_select="exif jpegtables"
2265 bink_decoder_select="blockdsp hpeldsp"
2266 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2267 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2268 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2269 cllc_decoder_select="bswapdsp"
2270 comfortnoise_encoder_select="lpc"
2271 cook_decoder_select="audiodsp mdct sinewin"
2272 cscd_decoder_select="lzo"
2273 cscd_decoder_suggest="zlib"
2274 dca_decoder_select="mdct"
2275 dds_decoder_select="texturedsp"
2276 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2277 dnxhd_decoder_select="blockdsp idctdsp"
2278 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2279 dvvideo_decoder_select="dvprofile idctdsp"
2280 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2281 dxa_decoder_select="zlib"
2282 dxv_decoder_select="lzf texturedsp"
2283 eac3_decoder_select="ac3_decoder"
2284 eac3_encoder_select="ac3_encoder"
2285 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2286 eatgq_decoder_select="aandcttables"
2287 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2288 exr_decoder_select="zlib"
2289 ffv1_decoder_select="golomb rangecoder"
2290 ffv1_encoder_select="rangecoder"
2291 ffvhuff_decoder_select="huffyuv_decoder"
2292 ffvhuff_encoder_select="huffyuv_encoder"
2293 fic_decoder_select="golomb"
2294 flac_decoder_select="flacdsp golomb"
2295 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2296 flashsv2_decoder_select="zlib"
2297 flashsv2_encoder_select="zlib"
2298 flashsv_decoder_select="zlib"
2299 flashsv_encoder_select="zlib"
2300 flv_decoder_select="h263_decoder"
2301 flv_encoder_select="h263_encoder"
2302 fourxm_decoder_select="blockdsp bswapdsp"
2303 fraps_decoder_select="bswapdsp huffman"
2304 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2305 g729_decoder_select="audiodsp"
2306 h261_decoder_select="mpegvideo"
2307 h261_encoder_select="aandcttables mpegvideoenc"
2308 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2309 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2310 h263i_decoder_select="h263_decoder"
2311 h263p_decoder_select="h263_decoder"
2312 h263p_encoder_select="h263_encoder"
2313 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2314 h264_decoder_suggest="error_resilience"
2315 h264_qsv_decoder_deps="libmfx"
2316 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2317 h264_qsv_encoder_deps="libmfx"
2318 h264_qsv_encoder_select="qsvenc"
2319 hap_decoder_select="snappy texturedsp"
2320 hap_encoder_deps="libsnappy"
2321 hap_encoder_select="texturedspenc"
2322 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2323 hevc_qsv_decoder_deps="libmfx"
2324 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2325 hevc_qsv_encoder_deps="libmfx"
2326 hevc_qsv_encoder_select="qsvenc"
2327 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2328 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2329 iac_decoder_select="imc_decoder"
2330 imc_decoder_select="bswapdsp fft mdct sinewin"
2331 indeo3_decoder_select="hpeldsp"
2332 indeo4_decoder_select="ividsp"
2333 indeo5_decoder_select="ividsp"
2334 interplay_video_decoder_select="hpeldsp"
2335 jpegls_decoder_select="golomb mjpeg_decoder"
2336 jpegls_encoder_select="golomb"
2337 jv_decoder_select="blockdsp"
2338 lagarith_decoder_select="huffyuvdsp"
2339 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2340 loco_decoder_select="golomb"
2341 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2342 metasound_decoder_select="lsp mdct sinewin"
2343 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2344 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2345 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2346 mjpegb_decoder_select="mjpeg_decoder"
2347 mlp_decoder_select="mlp_parser"
2348 motionpixels_decoder_select="bswapdsp"
2349 mp1_decoder_select="mpegaudio"
2350 mp1float_decoder_select="mpegaudio"
2351 mp2_decoder_select="mpegaudio"
2352 mp2float_decoder_select="mpegaudio"
2353 mp3_decoder_select="mpegaudio"
2354 mp3adu_decoder_select="mpegaudio"
2355 mp3adufloat_decoder_select="mpegaudio"
2356 mp3float_decoder_select="mpegaudio"
2357 mp3on4_decoder_select="mpegaudio"
2358 mp3on4float_decoder_select="mpegaudio"
2359 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2360 mpc8_decoder_select="mpegaudiodsp"
2361 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2362 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2363 mpegvideo_decoder_select="mpegvideo"
2364 mpeg1video_decoder_select="mpegvideo"
2365 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2366 mpeg2video_decoder_select="mpegvideo"
2367 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2368 mpeg2_qsv_decoder_deps="libmfx"
2369 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2370 mpeg2_qsv_encoder_deps="libmfx"
2371 mpeg2_qsv_encoder_select="qsvenc"
2372 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2373 mpeg4_encoder_select="h263_encoder"
2374 msa1_decoder_select="mss34dsp"
2375 msmpeg4v1_decoder_select="h263_decoder"
2376 msmpeg4v2_decoder_select="h263_decoder"
2377 msmpeg4v2_encoder_select="h263_encoder"
2378 msmpeg4v3_decoder_select="h263_decoder"
2379 msmpeg4v3_encoder_select="h263_encoder"
2380 mss2_decoder_select="vc1_decoder"
2381 mts2_decoder_select="mss34dsp"
2382 mxpeg_decoder_select="mjpeg_decoder"
2383 nellymoser_decoder_select="mdct sinewin"
2384 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2385 nuv_decoder_select="idctdsp lzo"
2386 on2avc_decoder_select="mdct"
2387 opus_decoder_deps="swresample"
2388 opus_decoder_select="imdct15"
2389 png_decoder_select="zlib"
2390 png_encoder_select="huffyuvencdsp zlib"
2391 prores_decoder_select="blockdsp idctdsp"
2392 prores_encoder_select="fdctdsp"
2393 qcelp_decoder_select="lsp"
2394 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2395 ra_144_decoder_select="audiodsp"
2396 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2397 ralf_decoder_select="golomb"
2398 rawvideo_decoder_select="bswapdsp"
2399 rscc_decoder_select="zlib"
2400 rtjpeg_decoder_select="me_cmp"
2401 rv10_decoder_select="h263_decoder"
2402 rv10_encoder_select="h263_encoder"
2403 rv20_decoder_select="h263_decoder"
2404 rv20_encoder_select="h263_encoder"
2405 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2406 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2407 screenpresso_decoder_select="zlib"
2408 shorten_decoder_select="golomb"
2409 sipr_decoder_select="lsp"
2410 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2411 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2412 sonic_decoder_select="golomb rangecoder"
2413 sonic_encoder_select="golomb rangecoder"
2414 sonic_ls_encoder_select="golomb rangecoder"
2415 sp5x_decoder_select="mjpeg_decoder"
2416 svq1_decoder_select="hpeldsp"
2417 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2418 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2419 svq3_decoder_suggest="zlib"
2420 tak_decoder_select="audiodsp"
2421 tdsc_decoder_select="zlib mjpeg_decoder"
2422 theora_decoder_select="vp3_decoder"
2423 thp_decoder_select="mjpeg_decoder"
2424 tiff_decoder_suggest="zlib lzma"
2425 tiff_encoder_suggest="zlib"
2426 truehd_decoder_select="mlp_parser"
2427 truemotion2_decoder_select="bswapdsp"
2428 truespeech_decoder_select="bswapdsp"
2429 tscc_decoder_select="zlib"
2430 twinvq_decoder_select="mdct lsp sinewin"
2431 txd_decoder_select="texturedsp"
2432 utvideo_decoder_select="bswapdsp"
2433 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2434 vble_decoder_select="huffyuvdsp"
2435 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2436 vc1_qsv_decoder_deps="libmfx"
2437 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2438 vc1image_decoder_select="vc1_decoder"
2439 vorbis_decoder_select="mdct"
2440 vorbis_encoder_select="mdct"
2441 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2442 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2443 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2444 vp6a_decoder_select="vp6_decoder"
2445 vp6f_decoder_select="vp6_decoder"
2446 vp7_decoder_select="h264pred videodsp vp8dsp"
2447 vp8_decoder_select="h264pred videodsp vp8dsp"
2448 vp9_decoder_select="videodsp vp9_parser"
2449 webp_decoder_select="vp8_decoder exif"
2450 wmalossless_decoder_select="llauddsp"
2451 wmapro_decoder_select="mdct sinewin wma_freqs"
2452 wmav1_decoder_select="mdct sinewin wma_freqs"
2453 wmav1_encoder_select="mdct sinewin wma_freqs"
2454 wmav2_decoder_select="mdct sinewin wma_freqs"
2455 wmav2_encoder_select="mdct sinewin wma_freqs"
2456 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2457 wmv1_decoder_select="h263_decoder"
2458 wmv1_encoder_select="h263_encoder"
2459 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2460 wmv2_encoder_select="h263_encoder wmv2dsp"
2461 wmv3_decoder_select="vc1_decoder"
2462 wmv3image_decoder_select="wmv3_decoder"
2463 xma1_decoder_select="wmapro_decoder"
2464 xma2_decoder_select="wmapro_decoder"
2465 zerocodec_decoder_select="zlib"
2466 zlib_decoder_select="zlib"
2467 zlib_encoder_select="zlib"
2468 zmbv_decoder_select="zlib"
2469 zmbv_encoder_select="zlib"
2470
2471 # hardware accelerators
2472 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2473 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2474 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2475 vaapi_deps="va_va_h"
2476 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2477 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2478 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2479 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2480 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2481 xvmc_deps="X11_extensions_XvMClib_h"
2482
2483 h263_vaapi_hwaccel_deps="vaapi"
2484 h263_vaapi_hwaccel_select="h263_decoder"
2485 h263_videotoolbox_hwaccel_deps="videotoolbox"
2486 h263_videotoolbox_hwaccel_select="h263_decoder"
2487 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2488 h264_d3d11va_hwaccel_deps="d3d11va"
2489 h264_d3d11va_hwaccel_select="h264_decoder"
2490 h264_dxva2_hwaccel_deps="dxva2"
2491 h264_dxva2_hwaccel_select="h264_decoder"
2492 h264_mmal_decoder_deps="mmal"
2493 h264_mmal_decoder_select="mmal"
2494 h264_mmal_hwaccel_deps="mmal"
2495 h264_qsv_hwaccel_deps="libmfx"
2496 h264_vaapi_hwaccel_deps="vaapi"
2497 h264_vaapi_hwaccel_select="h264_decoder"
2498 h264_vda_decoder_deps="vda"
2499 h264_vda_decoder_select="h264_decoder"
2500 h264_vda_hwaccel_deps="vda"
2501 h264_vda_hwaccel_select="h264_decoder"
2502 h264_vda_old_hwaccel_deps="vda"
2503 h264_vda_old_hwaccel_select="h264_decoder"
2504 h264_vdpau_decoder_deps="vdpau"
2505 h264_vdpau_decoder_select="h264_decoder"
2506 h264_vdpau_hwaccel_deps="vdpau"
2507 h264_vdpau_hwaccel_select="h264_decoder"
2508 h264_videotoolbox_hwaccel_deps="videotoolbox"
2509 h264_videotoolbox_hwaccel_select="h264_decoder"
2510 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2511 hevc_d3d11va_hwaccel_select="hevc_decoder"
2512 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2513 hevc_dxva2_hwaccel_select="hevc_decoder"
2514 hevc_qsv_hwaccel_deps="libmfx"
2515 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2516 hevc_vaapi_hwaccel_select="hevc_decoder"
2517 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2518 hevc_vdpau_hwaccel_select="hevc_decoder"
2519 mpeg_vdpau_decoder_deps="vdpau"
2520 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2521 mpeg_xvmc_hwaccel_deps="xvmc"
2522 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2523 mpeg1_vdpau_decoder_deps="vdpau"
2524 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2525 mpeg1_vdpau_hwaccel_deps="vdpau"
2526 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2527 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2528 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2529 mpeg1_xvmc_hwaccel_deps="xvmc"
2530 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2531 mpeg2_crystalhd_decoder_select="crystalhd"
2532 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2533 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2534 mpeg2_dxva2_hwaccel_deps="dxva2"
2535 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2536 mpeg2_mmal_decoder_deps="mmal"
2537 mpeg2_mmal_decoder_select="mmal"
2538 mpeg2_mmal_hwaccel_deps="mmal"
2539 mpeg2_qsv_hwaccel_deps="libmfx"
2540 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2541 mpeg2_vaapi_hwaccel_deps="vaapi"
2542 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2543 mpeg2_vdpau_hwaccel_deps="vdpau"
2544 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2545 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2546 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_xvmc_hwaccel_deps="xvmc"
2548 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2549 mpeg4_crystalhd_decoder_select="crystalhd"
2550 mpeg4_mmal_decoder_deps="mmal"
2551 mpeg4_mmal_decoder_select="mmal"
2552 mpeg4_mmal_hwaccel_deps="mmal"
2553 mpeg4_vaapi_hwaccel_deps="vaapi"
2554 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2555 mpeg4_vdpau_decoder_deps="vdpau"
2556 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2557 mpeg4_vdpau_hwaccel_deps="vdpau"
2558 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2559 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2560 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2561 msmpeg4_crystalhd_decoder_select="crystalhd"
2562 vc1_crystalhd_decoder_select="crystalhd"
2563 vc1_d3d11va_hwaccel_deps="d3d11va"
2564 vc1_d3d11va_hwaccel_select="vc1_decoder"
2565 vc1_dxva2_hwaccel_deps="dxva2"
2566 vc1_dxva2_hwaccel_select="vc1_decoder"
2567 vc1_mmal_decoder_deps="mmal"
2568 vc1_mmal_decoder_select="mmal"
2569 vc1_mmal_hwaccel_deps="mmal"
2570 vc1_qsv_hwaccel_deps="libmfx"
2571 vc1_qsv_hwaccel_select="qsvdec_vc1"
2572 vc1_vaapi_hwaccel_deps="vaapi"
2573 vc1_vaapi_hwaccel_select="vc1_decoder"
2574 vc1_vdpau_decoder_deps="vdpau"
2575 vc1_vdpau_decoder_select="vc1_decoder"
2576 vc1_vdpau_hwaccel_deps="vdpau"
2577 vc1_vdpau_hwaccel_select="vc1_decoder"
2578 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2579 vp9_d3d11va_hwaccel_select="vp9_decoder"
2580 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2581 vp9_dxva2_hwaccel_select="vp9_decoder"
2582 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2583 vp9_vaapi_hwaccel_select="vp9_decoder"
2584 wmv3_crystalhd_decoder_select="crystalhd"
2585 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2586 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2587 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2588 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2589 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2590
2591 # parsers
2592 h264_parser_select="h264_decoder"
2593 hevc_parser_select="golomb"
2594 mpegvideo_parser_select="mpegvideo"
2595 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2596 vc1_parser_select="mpegvideo startcode vc1_decoder"
2597
2598 # bitstream_filters
2599 mjpeg2jpeg_bsf_select="jpegtables"
2600
2601 # external libraries
2602 chromaprint_muxer_deps="chromaprint"
2603 libcelt_decoder_deps="libcelt"
2604 libdcadec_decoder_deps="libdcadec"
2605 libfaac_encoder_deps="libfaac"
2606 libfaac_encoder_select="audio_frame_queue"
2607 libfdk_aac_decoder_deps="libfdk_aac"
2608 libfdk_aac_encoder_deps="libfdk_aac"
2609 libfdk_aac_encoder_select="audio_frame_queue"
2610 libgme_demuxer_deps="libgme"
2611 libgsm_decoder_deps="libgsm"
2612 libgsm_encoder_deps="libgsm"
2613 libgsm_ms_decoder_deps="libgsm"
2614 libgsm_ms_encoder_deps="libgsm"
2615 libilbc_decoder_deps="libilbc"
2616 libilbc_encoder_deps="libilbc"
2617 libkvazaar_encoder_deps="libkvazaar"
2618 libmodplug_demuxer_deps="libmodplug"
2619 libmp3lame_encoder_deps="libmp3lame"
2620 libmp3lame_encoder_select="audio_frame_queue"
2621 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2622 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2623 libopencore_amrnb_encoder_select="audio_frame_queue"
2624 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2625 libopenh264_encoder_deps="libopenh264"
2626 libopenjpeg_decoder_deps="libopenjpeg"
2627 libopenjpeg_encoder_deps="libopenjpeg"
2628 libopus_decoder_deps="libopus"
2629 libopus_encoder_deps="libopus"
2630 libopus_encoder_select="audio_frame_queue"
2631 libschroedinger_decoder_deps="libschroedinger"
2632 libschroedinger_encoder_deps="libschroedinger"
2633 libshine_encoder_deps="libshine"
2634 libshine_encoder_select="audio_frame_queue"
2635 libspeex_decoder_deps="libspeex"
2636 libspeex_encoder_deps="libspeex"
2637 libspeex_encoder_select="audio_frame_queue"
2638 libtheora_encoder_deps="libtheora"
2639 libtwolame_encoder_deps="libtwolame"
2640 libutvideo_decoder_deps="libutvideo"
2641 libutvideo_encoder_deps="libutvideo"
2642 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2643 libvorbis_decoder_deps="libvorbis"
2644 libvorbis_encoder_deps="libvorbis"
2645 libvorbis_encoder_select="audio_frame_queue"
2646 libvpx_vp8_decoder_deps="libvpx"
2647 libvpx_vp8_encoder_deps="libvpx"
2648 libvpx_vp9_decoder_deps="libvpx"
2649 libvpx_vp9_encoder_deps="libvpx"
2650 libwavpack_encoder_deps="libwavpack"
2651 libwebp_encoder_deps="libwebp"
2652 libwebp_anim_encoder_deps="libwebp"
2653 libx262_encoder_deps="libx262"
2654 libx264_encoder_deps="libx264"
2655 libx264rgb_encoder_deps="libx264"
2656 libx264rgb_encoder_select="libx264_encoder"
2657 libx265_encoder_deps="libx265"
2658 libxavs_encoder_deps="libxavs"
2659 libxvid_encoder_deps="libxvid"
2660 libzvbi_teletext_decoder_deps="libzvbi"
2661 nvenc_encoder_deps="nvenc"
2662 nvenc_h264_encoder_deps="nvenc"
2663 nvenc_hevc_encoder_deps="nvenc"
2664
2665 # demuxers / muxers
2666 ac3_demuxer_select="ac3_parser"
2667 asf_demuxer_select="riffdec"
2668 asf_o_demuxer_select="riffdec"
2669 asf_muxer_select="riffenc"
2670 asf_stream_muxer_select="asf_muxer"
2671 avi_demuxer_select="riffdec exif"
2672 avi_muxer_select="riffenc"
2673 avisynth_demuxer_deps="avisynth"
2674 avisynth_demuxer_select="riffdec"
2675 caf_demuxer_select="riffdec"
2676 dash_muxer_select="mp4_muxer"
2677 dirac_demuxer_select="dirac_parser"
2678 dts_demuxer_select="dca_parser"
2679 dtshd_demuxer_select="dca_parser"
2680 dv_demuxer_select="dvprofile"
2681 dv_muxer_select="dvprofile"
2682 dxa_demuxer_select="riffdec"
2683 eac3_demuxer_select="ac3_parser"
2684 f4v_muxer_select="mov_muxer"
2685 flac_demuxer_select="flac_parser"
2686 hds_muxer_select="flv_muxer"
2687 hls_muxer_select="mpegts_muxer"
2688 image2_alias_pix_demuxer_select="image2_demuxer"
2689 image2_brender_pix_demuxer_select="image2_demuxer"
2690 ipod_muxer_select="mov_muxer"
2691 ismv_muxer_select="mov_muxer"
2692 libnut_demuxer_deps="libnut"
2693 libnut_muxer_deps="libnut"
2694 matroska_audio_muxer_select="matroska_muxer"
2695 matroska_demuxer_select="riffdec"
2696 matroska_demuxer_suggest="bzlib lzo zlib"
2697 matroska_muxer_select="riffenc"
2698 mmf_muxer_select="riffenc"
2699 mov_demuxer_select="riffdec"
2700 mov_demuxer_suggest="zlib"
2701 mov_muxer_select="riffenc rtpenc_chain"
2702 mp3_demuxer_select="mpegaudio_parser"
2703 mp4_muxer_select="mov_muxer"
2704 mpegts_muxer_select="adts_muxer latm_muxer"
2705 mpegtsraw_demuxer_select="mpegts_demuxer"
2706 mxf_d10_muxer_select="mxf_muxer"
2707 mxf_opatom_muxer_select="mxf_muxer"
2708 nut_muxer_select="riffenc"
2709 nuv_demuxer_select="riffdec"
2710 oga_muxer_select="ogg_muxer"
2711 ogg_demuxer_select="dirac_parse"
2712 opus_muxer_select="ogg_muxer"
2713 psp_muxer_select="mov_muxer"
2714 rtp_demuxer_select="sdp_demuxer"
2715 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2716 rtsp_demuxer_select="http_protocol rtpdec"
2717 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2718 sap_demuxer_select="sdp_demuxer"
2719 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2720 sdp_demuxer_select="rtpdec"
2721 smoothstreaming_muxer_select="ismv_muxer"
2722 spdif_muxer_select="aac_parser"
2723 spx_muxer_select="ogg_muxer"
2724 swf_demuxer_suggest="zlib"
2725 tak_demuxer_select="tak_parser"
2726 tg2_muxer_select="mov_muxer"
2727 tgp_muxer_select="mov_muxer"
2728 vobsub_demuxer_select="mpegps_demuxer"
2729 w64_demuxer_select="wav_demuxer"
2730 w64_muxer_select="wav_muxer"
2731 wav_demuxer_select="riffdec"
2732 wav_muxer_select="riffenc"
2733 webm_muxer_select="riffenc"
2734 wtv_demuxer_select="riffdec"
2735 wtv_muxer_select="riffenc"
2736 xmv_demuxer_select="riffdec"
2737 xwma_demuxer_select="riffdec"
2738
2739 # indevs / outdevs
2740 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2741 alsa_outdev_deps="alsa_asoundlib_h"
2742 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2743 avfoundation_indev_select="avfoundation"
2744 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2745 caca_outdev_deps="libcaca"
2746 decklink_indev_deps="decklink pthreads"
2747 decklink_indev_extralibs="-lstdc++"
2748 decklink_outdev_deps="decklink pthreads"
2749 decklink_outdev_extralibs="-lstdc++"
2750 dshow_indev_deps="IBaseFilter"
2751 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2752 dv1394_indev_deps="dv1394"
2753 dv1394_indev_select="dv_demuxer"
2754 fbdev_indev_deps="linux_fb_h"
2755 fbdev_outdev_deps="linux_fb_h"
2756 gdigrab_indev_deps="CreateDIBSection"
2757 gdigrab_indev_extralibs="-lgdi32"
2758 gdigrab_indev_select="bmp_decoder"
2759 iec61883_indev_deps="libiec61883"
2760 jack_indev_deps="jack_jack_h sem_timedwait"
2761 lavfi_indev_deps="avfilter"
2762 libcdio_indev_deps="libcdio"
2763 libdc1394_indev_deps="libdc1394"
2764 libv4l2_indev_deps="libv4l2"
2765 openal_indev_deps="openal"
2766 opengl_outdev_deps="opengl"
2767 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2768 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2769 pulse_indev_deps="libpulse"
2770 pulse_outdev_deps="libpulse"
2771 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2772 qtkit_indev_select="qtkit"
2773 sdl_outdev_deps="sdl"
2774 sndio_indev_deps="sndio_h"
2775 sndio_outdev_deps="sndio_h"
2776 v4l_indev_deps="linux_videodev_h"
2777 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2778 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2779 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2780 vfwcap_indev_extralibs="-lavicap32"
2781 x11grab_indev_deps="x11grab"
2782 x11grab_xcb_indev_deps="libxcb"
2783 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2784 xv_outdev_extralibs="-lXv -lX11 -lXext"
2785
2786 # protocols
2787 async_protocol_deps="threads"
2788 bluray_protocol_deps="libbluray"
2789 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2790 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2791 ffrtmpcrypt_protocol_select="tcp_protocol"
2792 ffrtmphttp_protocol_deps="!librtmp_protocol"
2793 ffrtmphttp_protocol_select="http_protocol"
2794 ftp_protocol_select="tcp_protocol"
2795 gopher_protocol_select="network"
2796 http_protocol_select="tcp_protocol"
2797 httpproxy_protocol_select="tcp_protocol"
2798 https_protocol_select="tls_protocol"
2799 icecast_protocol_select="http_protocol"
2800 librtmp_protocol_deps="librtmp"
2801 librtmpe_protocol_deps="librtmp"
2802 librtmps_protocol_deps="librtmp"
2803 librtmpt_protocol_deps="librtmp"
2804 librtmpte_protocol_deps="librtmp"
2805 libsmbclient_protocol_deps="libsmbclient gplv3"
2806 libssh_protocol_deps="libssh"
2807 mmsh_protocol_select="http_protocol"
2808 mmst_protocol_select="network"
2809 rtmp_protocol_deps="!librtmp_protocol"
2810 rtmp_protocol_select="tcp_protocol"
2811 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2812 rtmps_protocol_deps="!librtmp_protocol"
2813 rtmps_protocol_select="tls_protocol"
2814 rtmpt_protocol_select="ffrtmphttp_protocol"
2815 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2816 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2817 rtp_protocol_select="udp_protocol"
2818 sctp_protocol_deps="struct_sctp_event_subscribe"
2819 sctp_protocol_select="network"
2820 srtp_protocol_select="rtp_protocol"
2821 tcp_protocol_select="network"
2822 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2823 tls_gnutls_protocol_select="tcp_protocol"
2824 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2825 tls_openssl_protocol_select="tcp_protocol"
2826 tls_schannel_protocol_deps="schannel"
2827 tls_schannel_protocol_select="tcp_protocol"
2828 tls_securetransport_protocol_deps="securetransport"
2829 tls_securetransport_protocol_select="tcp_protocol"
2830 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2831 udp_protocol_select="network"
2832 udplite_protocol_select="network"
2833 unix_protocol_deps="sys_un_h"
2834 unix_protocol_select="network"
2835
2836 # filters
2837 afftfilt_filter_deps="avcodec"
2838 afftfilt_filter_select="fft"
2839 amovie_filter_deps="avcodec avformat"
2840 aresample_filter_deps="swresample"
2841 ass_filter_deps="libass"
2842 asyncts_filter_deps="avresample"
2843 atempo_filter_deps="avcodec"
2844 atempo_filter_select="rdft"
2845 azmq_filter_deps="libzmq"
2846 blackframe_filter_deps="gpl"
2847 boxblur_filter_deps="gpl"
2848 bs2b_filter_deps="libbs2b"
2849 colormatrix_filter_deps="gpl"
2850 cover_rect_filter_deps="avcodec avformat gpl"
2851 cropdetect_filter_deps="gpl"
2852 delogo_filter_deps="gpl"
2853 deshake_filter_select="pixelutils"
2854 drawtext_filter_deps="libfreetype"
2855 ebur128_filter_deps="gpl"
2856 eq_filter_deps="gpl"
2857 fftfilt_filter_deps="avcodec"
2858 fftfilt_filter_select="rdft"
2859 find_rect_filter_deps="avcodec avformat gpl"
2860 flite_filter_deps="libflite"
2861 frei0r_filter_deps="frei0r dlopen"
2862 frei0r_src_filter_deps="frei0r dlopen"
2863 fspp_filter_deps="gpl"
2864 geq_filter_deps="gpl"
2865 histeq_filter_deps="gpl"
2866 hqdn3d_filter_deps="gpl"
2867 interlace_filter_deps="gpl"
2868 kerndeint_filter_deps="gpl"
2869 ladspa_filter_deps="ladspa dlopen"
2870 mcdeint_filter_deps="avcodec gpl"
2871 movie_filter_deps="avcodec avformat"
2872 mpdecimate_filter_deps="gpl"
2873 mpdecimate_filter_select="pixelutils"
2874 mptestsrc_filter_deps="gpl"
2875 negate_filter_deps="lut_filter"
2876 nnedi_filter_deps="gpl"
2877 ocr_filter_deps="libtesseract"
2878 ocv_filter_deps="libopencv"
2879 owdenoise_filter_deps="gpl"
2880 pan_filter_deps="swresample"
2881 perspective_filter_deps="gpl"
2882 phase_filter_deps="gpl"
2883 pp7_filter_deps="gpl"
2884 pp_filter_deps="gpl postproc"
2885 pullup_filter_deps="gpl"
2886 removelogo_filter_deps="avcodec avformat swscale"
2887 repeatfields_filter_deps="gpl"
2888 resample_filter_deps="avresample"
2889 rubberband_filter_deps="librubberband"
2890 sab_filter_deps="gpl swscale"
2891 scale2ref_filter_deps="swscale"
2892 scale_filter_deps="swscale"
2893 select_filter_select="pixelutils"
2894 showcqt_filter_deps="avcodec avformat swscale"
2895 showcqt_filter_select="fft"
2896 showfreqs_filter_deps="avcodec"
2897 showfreqs_filter_select="fft"
2898 showspectrum_filter_deps="avcodec"
2899 showspectrum_filter_select="fft"
2900 showspectrumpic_filter_deps="avcodec"
2901 showspectrumpic_filter_select="fft"
2902 smartblur_filter_deps="gpl swscale"
2903 sofalizer_filter_deps="netcdf avcodec"
2904 sofalizer_filter_select="fft"
2905 spectrumsynth_filter_deps="avcodec"
2906 spectrumsynth_filter_select="fft"
2907 spp_filter_deps="gpl avcodec"
2908 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2909 stereo3d_filter_deps="gpl"
2910 subtitles_filter_deps="avformat avcodec libass"
2911 super2xsai_filter_deps="gpl"
2912 pixfmts_super2xsai_test_deps="super2xsai_filter"
2913 tinterlace_filter_deps="gpl"
2914 tinterlace_merge_test_deps="tinterlace_filter"
2915 tinterlace_pad_test_deps="tinterlace_filter"
2916 uspp_filter_deps="gpl avcodec"
2917 vidstabdetect_filter_deps="libvidstab"
2918 vidstabtransform_filter_deps="libvidstab"
2919 zmq_filter_deps="libzmq"
2920 zoompan_filter_deps="swscale"
2921 zscale_filter_deps="libzimg"
2922
2923 # examples
2924 avcodec_example_deps="avcodec avutil"
2925 avio_dir_cmd="avformat avutil"
2926 avio_reading="avformat avcodec avutil"
2927 decoding_encoding_example_deps="avcodec avformat avutil"
2928 demuxing_decoding_example_deps="avcodec avformat avutil"
2929 extract_mvs_example_deps="avcodec avformat avutil"
2930 filter_audio_example_deps="avfilter avutil"
2931 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2932 filtering_video_example_deps="avfilter avcodec avformat avutil"
2933 metadata_example_deps="avformat avutil"
2934 muxing_example_deps="avcodec avformat avutil swscale"
2935 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2936 remuxing_example_deps="avcodec avformat avutil"
2937 resampling_audio_example_deps="avutil swresample"
2938 scaling_video_example_deps="avutil swscale"
2939 transcode_aac_example_deps="avcodec avformat swresample"
2940 transcoding_example_deps="avfilter avcodec avformat avutil"
2941
2942 # libraries, in linking order
2943 avcodec_deps="avutil"
2944 avdevice_deps="avformat avcodec avutil"
2945 avfilter_deps="avutil"
2946 avformat_deps="avcodec avutil"
2947 avresample_deps="avutil"
2948 postproc_deps="avutil gpl"
2949 swresample_deps="avutil"
2950 swscale_deps="avutil"
2951
2952 # programs
2953 ffmpeg_deps="avcodec avfilter avformat swresample"
2954 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2955                null_filter
2956                setpts_filter trim_filter"
2957 ffplay_deps="avcodec avformat swscale swresample sdl"
2958 ffplay_libs='$sdl_libs'
2959 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2960 ffprobe_deps="avcodec avformat"
2961 ffserver_deps="avformat fork sarestart"
2962 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2963
2964 # documentation
2965 podpages_deps="perl"
2966 manpages_deps="perl pod2man"
2967 htmlpages_deps="perl"
2968 htmlpages_deps_any="makeinfo_html texi2html"
2969 txtpages_deps="perl makeinfo"
2970 doc_deps_any="manpages htmlpages podpages txtpages"
2971
2972 # default parameters
2973
2974 logfile="config.log"
2975
2976 # installation paths
2977 prefix_default="/usr/local"
2978 bindir_default='${prefix}/bin'
2979 datadir_default='${prefix}/share/ffmpeg'
2980 docdir_default='${prefix}/share/doc/ffmpeg'
2981 incdir_default='${prefix}/include'
2982 libdir_default='${prefix}/lib'
2983 mandir_default='${prefix}/share/man'
2984
2985 # toolchain
2986 ar_default="ar"
2987 cc_default="gcc"
2988 cxx_default="g++"
2989 host_cc_default="gcc"
2990 cp_f="cp -f"
2991 doxygen_default="doxygen"
2992 install="install"
2993 ln_s="ln -s -f"
2994 nm_default="nm -g"
2995 objformat="elf"
2996 pkg_config_default=pkg-config
2997 ranlib_default="ranlib"
2998 strip_default="strip"
2999 yasmexe_default="yasm"
3000 windres_default="windres"
3001
3002 # OS
3003 target_os_default=$(tolower $(uname -s))
3004 host_os=$target_os_default
3005
3006 # machine
3007 if test "$target_os_default" = aix; then
3008     arch_default=$(uname -p)
3009     strip_default="strip -X32_64"
3010 else
3011     arch_default=$(uname -m)
3012 fi
3013 cpu="generic"
3014 intrinsics="none"
3015
3016 # configurable options
3017 enable $PROGRAM_LIST
3018 enable $DOCUMENT_LIST
3019 enable $EXAMPLE_LIST
3020 enable $(filter_out avresample $LIBRARY_LIST)
3021 enable stripping
3022
3023 enable asm
3024 enable debug
3025 enable doc
3026 enable faan faandct faanidct
3027 enable optimizations
3028 enable runtime_cpudetect
3029 enable safe_bitstream_reader
3030 enable static
3031 enable swscale_alpha
3032 enable valgrind_backtrace
3033
3034 sws_max_filter_size_default=256
3035 set_default sws_max_filter_size
3036
3037 # Enable hwaccels by default.
3038 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3039 enable xlib
3040
3041 # build settings
3042 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3043 LIBPREF="lib"
3044 LIBSUF=".a"
3045 FULLNAME='$(NAME)$(BUILDSUF)'
3046 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3047 SLIBPREF="lib"
3048 SLIBSUF=".so"
3049 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3050 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3051 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3052 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3053 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3054 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3055
3056 asflags_filter=echo
3057 cflags_filter=echo
3058 ldflags_filter=echo
3059
3060 AS_C='-c'
3061 AS_O='-o $@'
3062 CC_C='-c'
3063 CC_E='-E -o $@'
3064 CC_O='-o $@'
3065 CXX_C='-c'
3066 CXX_O='-o $@'
3067 OBJCC_C='-c'
3068 OBJCC_E='-E -o $@'
3069 OBJCC_O='-o $@'
3070 LD_O='-o $@'
3071 LD_LIB='-l%'
3072 LD_PATH='-L'
3073 HOSTCC_C='-c'
3074 HOSTCC_E='-E -o $@'
3075 HOSTCC_O='-o $@'
3076 HOSTLD_O='-o $@'
3077
3078 host_libs='-lm'
3079 host_cflags_filter=echo
3080 host_ldflags_filter=echo
3081
3082 target_path='$(CURDIR)'
3083
3084 # since the object filename is not given with the -MM flag, the compiler
3085 # is only able to print the basename, and we must add the path ourselves
3086 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3087 DEPFLAGS='-MM'
3088
3089 # find source path
3090 if test -f configure; then
3091     source_path=.
3092 else
3093     source_path=$(cd $(dirname "$0"); pwd)
3094     case "$source_path" in
3095         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3096     esac
3097     test -e "$source_path/config.h" &&
3098         die "Out of tree builds are impossible with config.h in source dir."
3099 fi
3100
3101 for v in "$@"; do
3102     r=${v#*=}
3103     l=${v%"$r"}
3104     r=$(sh_quote "$r")
3105     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3106 done
3107
3108 find_things(){
3109     thing=$1
3110     pattern=$2
3111     file=$source_path/$3
3112     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3113 }
3114
3115 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3116 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3117 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3118 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3119 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3120 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3121 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3122 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3123 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3124 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3125 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3126
3127 ALL_COMPONENTS="
3128     $BSF_LIST
3129     $DECODER_LIST
3130     $DEMUXER_LIST
3131     $ENCODER_LIST
3132     $FILTER_LIST
3133     $HWACCEL_LIST
3134     $INDEV_LIST
3135     $MUXER_LIST
3136     $OUTDEV_LIST
3137     $PARSER_LIST
3138     $PROTOCOL_LIST
3139 "
3140
3141 for n in $COMPONENT_LIST; do
3142     v=$(toupper ${n%s})_LIST
3143     eval enable \$$v
3144     eval ${n}_if_any="\$$v"
3145 done
3146
3147 enable $ARCH_EXT_LIST
3148
3149 die_unknown(){
3150     echo "Unknown option \"$1\"."
3151     echo "See $0 --help for available options."
3152     exit 1
3153 }
3154
3155 print_in_columns() {
3156     cols=$(expr $ncols / 24)
3157     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3158 }
3159
3160 show_list() {
3161     suffix=_$1
3162     shift
3163     echo $* | sed s/$suffix//g | print_in_columns
3164     exit 0
3165 }
3166
3167 rand_list(){
3168     IFS=', '
3169     set -- $*
3170     unset IFS
3171     for thing; do
3172         comp=${thing%:*}
3173         prob=${thing#$comp}
3174         prob=${prob#:}
3175         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3176         echo "prob ${prob:-0.5}"
3177         printf '%s\n' $comp
3178     done
3179 }
3180
3181 do_random(){
3182     action=$1
3183     shift
3184     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3185     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3186 }
3187
3188 for opt do
3189     optval="${opt#*=}"
3190     case "$opt" in
3191         --extra-ldflags=*)
3192             add_ldflags $optval
3193         ;;
3194         --extra-ldexeflags=*)
3195             add_ldexeflags $optval
3196         ;;
3197         --extra-ldlibflags=*)
3198             add_ldlibflags $optval
3199         ;;
3200         --extra-libs=*)
3201             add_extralibs $optval
3202         ;;
3203         --disable-devices)
3204             disable $INDEV_LIST $OUTDEV_LIST
3205         ;;
3206         --enable-debug=*)
3207             debuglevel="$optval"
3208         ;;
3209         --disable-programs)
3210             disable $PROGRAM_LIST
3211         ;;
3212         --disable-everything)
3213             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3214         ;;
3215         --disable-all)
3216             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3217             disable $LIBRARY_LIST $PROGRAM_LIST doc
3218             enable avutil
3219         ;;
3220         --enable-random|--disable-random)
3221             action=${opt%%-random}
3222             do_random ${action#--} $COMPONENT_LIST
3223         ;;
3224         --enable-random=*|--disable-random=*)
3225             action=${opt%%-random=*}
3226             do_random ${action#--} $optval
3227         ;;
3228         --enable-*=*|--disable-*=*)
3229             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3230             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3231             eval list=\$$(toupper $thing)_LIST
3232             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3233             list=$(filter "$name" $list)
3234             [ "$list" = "" ] && warn "Option $opt did not match anything"
3235             $action $list
3236         ;;
3237         --enable-?*|--disable-?*)
3238             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3239             if is_in $option $COMPONENT_LIST; then
3240                 test $action = disable && action=unset
3241                 eval $action \$$(toupper ${option%s})_LIST
3242             elif is_in $option $CMDLINE_SELECT; then
3243                 $action $option
3244             else
3245                 die_unknown $opt
3246             fi
3247         ;;
3248         --list-*)
3249             NAME="${opt#--list-}"
3250             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3251             NAME=${NAME%s}
3252             eval show_list $NAME \$$(toupper $NAME)_LIST
3253         ;;
3254         --help|-h) show_help
3255         ;;
3256         --fatal-warnings) enable fatal_warnings
3257         ;;
3258         *)
3259             optname="${opt%%=*}"
3260             optname="${optname#--}"
3261             optname=$(echo "$optname" | sed 's/-/_/g')
3262             if is_in $optname $CMDLINE_SET; then
3263                 eval $optname='$optval'
3264             elif is_in $optname $CMDLINE_APPEND; then
3265                 append $optname "$optval"
3266             else
3267                 die_unknown $opt
3268             fi
3269         ;;
3270     esac
3271 done
3272
3273 for e in $env; do
3274     eval "export $e"
3275 done
3276
3277 disabled logging && logfile=/dev/null
3278
3279 # Disable all the library-specific components if the library itself
3280 # is disabled, see AVCODEC_LIST and following _LIST variables.
3281
3282 disable_components(){
3283     disabled ${1} && disable $(
3284         eval components="\$$(toupper ${1})_COMPONENTS"
3285         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3286     )
3287 }
3288
3289 map 'disable_components $v' $LIBRARY_LIST
3290
3291 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3292 set >> $logfile
3293
3294 test -n "$valgrind" && toolchain="valgrind-memcheck"
3295
3296 case "$toolchain" in
3297     clang-asan)
3298         cc_default="clang"
3299         add_cflags  -fsanitize=address
3300         add_ldflags -fsanitize=address
3301     ;;
3302     clang-tsan)
3303         cc_default="clang"
3304         add_cflags  -fsanitize=thread -pie
3305         add_ldflags -fsanitize=thread -pie
3306     ;;
3307     clang-usan)
3308         cc_default="clang"
3309         add_cflags  -fsanitize=undefined
3310         add_ldflags -fsanitize=undefined
3311     ;;
3312     gcc-asan)
3313         cc_default="gcc"
3314         add_cflags  -fsanitize=address
3315         add_ldflags -fsanitize=address
3316     ;;
3317     gcc-tsan)
3318         cc_default="gcc"
3319         add_cflags  -fsanitize=thread -pie -fPIC
3320         add_ldflags -fsanitize=thread -pie -fPIC
3321     ;;
3322     gcc-usan)
3323         cc_default="gcc"
3324         add_cflags  -fsanitize=undefined
3325         add_ldflags -fsanitize=undefined
3326     ;;
3327     valgrind-massif)
3328         target_exec_default=${valgrind:-"valgrind"}
3329         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"
3330     ;;
3331     valgrind-memcheck)
3332         target_exec_default=${valgrind:-"valgrind"}
3333         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3334     ;;
3335     msvc)
3336         # Check whether the current MSVC version needs the C99 converter.
3337         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3338         # support enough of C99 to build ffmpeg. Default to the new
3339         # behaviour if the regexp was unable to match anything, since this
3340         # successfully parses the version number of existing supported
3341         # versions that require the converter (MSVC 2010 and 2012).
3342         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3343         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3344             cc_default="cl"
3345         else
3346             cc_default="c99wrap cl"
3347         fi
3348         ld_default="$source_path/compat/windows/mslink"
3349         nm_default="dumpbin -symbols"
3350         ar_default="lib"
3351         case "$arch" in
3352         arm*)
3353             as_default="armasm"
3354             ;;
3355         esac
3356         target_os_default="win32"
3357         # Use a relative path for TMPDIR. This makes sure all the
3358         # ffconf temp files are written with a relative path, avoiding
3359         # issues with msys/win32 path conversion for MSVC parameters
3360         # such as -Fo<file> or -out:<file>.
3361         TMPDIR=.
3362     ;;
3363     icl)
3364         cc_default="icl"
3365         ld_default="xilink"
3366         nm_default="dumpbin -symbols"
3367         ar_default="xilib"
3368         target_os_default="win32"
3369         TMPDIR=.
3370     ;;
3371     gcov)
3372         add_cflags  -fprofile-arcs -ftest-coverage
3373         add_ldflags -fprofile-arcs -ftest-coverage
3374     ;;
3375     hardened)
3376         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3377         add_cflags   -fno-strict-overflow -fstack-protector-all
3378         add_ldflags  -Wl,-z,relro -Wl,-z,now
3379     ;;
3380     ?*)
3381         die "Unknown toolchain $toolchain"
3382     ;;
3383 esac
3384
3385 test -n "$cross_prefix" && enable cross_compile
3386
3387 if enabled cross_compile; then
3388     test -n "$arch" && test -n "$target_os" ||
3389         die "Must specify target arch and OS when cross-compiling"
3390 fi
3391
3392 ar_default="${cross_prefix}${ar_default}"
3393 cc_default="${cross_prefix}${cc_default}"
3394 cxx_default="${cross_prefix}${cxx_default}"
3395 nm_default="${cross_prefix}${nm_default}"
3396 pkg_config_default="${cross_prefix}${pkg_config_default}"
3397 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3398     ranlib_default="${cross_prefix}${ranlib_default} -D"
3399 else
3400     ranlib_default="${cross_prefix}${ranlib_default}"
3401 fi
3402 strip_default="${cross_prefix}${strip_default}"
3403 windres_default="${cross_prefix}${windres_default}"
3404
3405 sysinclude_default="${sysroot}/usr/include"
3406
3407 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3408     target_exec target_os yasmexe
3409 enabled cross_compile || host_cc_default=$cc
3410 set_default host_cc
3411
3412 pkg_config_fail_message=""
3413 if ! $pkg_config --version >/dev/null 2>&1; then
3414     warn "$pkg_config not found, library detection may fail."
3415     pkg_config=false
3416 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3417     pkg_config_fail_message="
3418 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3419 fi
3420
3421 if test $doxygen != $doxygen_default && \
3422   ! $doxygen --version >/dev/null 2>&1; then
3423     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3424 fi
3425
3426 exesuf() {
3427     case $1 in
3428         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3429     esac
3430 }
3431
3432 EXESUF=$(exesuf $target_os)
3433 HOSTEXESUF=$(exesuf $host_os)
3434
3435 # set temporary file name
3436 : ${TMPDIR:=$TEMPDIR}
3437 : ${TMPDIR:=$TMP}
3438 : ${TMPDIR:=/tmp}
3439
3440 if [ -n "$tempprefix" ] ; then
3441     mktemp(){
3442         echo $tempprefix.${HOSTNAME}.${UID}
3443     }
3444 elif ! check_cmd mktemp -u XXXXXX; then
3445     # simple replacement for missing mktemp
3446     # NOT SAFE FOR GENERAL USE
3447     mktemp(){
3448         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3449     }
3450 fi
3451
3452 tmpfile(){
3453     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3454         (set -C; exec > $tmp) 2>/dev/null ||
3455         die "Unable to create temporary file in $TMPDIR."
3456     append TMPFILES $tmp
3457     eval $1=$tmp
3458 }
3459
3460 trap 'rm -f -- $TMPFILES' EXIT
3461
3462 tmpfile TMPASM .asm
3463 tmpfile TMPC   .c
3464 tmpfile TMPCPP .cpp
3465 tmpfile TMPE   $EXESUF
3466 tmpfile TMPH   .h
3467 tmpfile TMPM   .m
3468 tmpfile TMPO   .o
3469 tmpfile TMPS   .S
3470 tmpfile TMPSH  .sh
3471 tmpfile TMPV   .ver
3472
3473 unset -f mktemp
3474
3475 chmod +x $TMPE
3476
3477 # make sure we can execute files in $TMPDIR
3478 cat > $TMPSH 2>> $logfile <<EOF
3479 #! /bin/sh
3480 EOF
3481 chmod +x $TMPSH >> $logfile 2>&1
3482 if ! $TMPSH >> $logfile 2>&1; then
3483     cat <<EOF
3484 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3485 variable to another directory and make sure that it is not mounted noexec.
3486 EOF
3487     die "Sanity test failed."
3488 fi
3489
3490 armasm_flags(){
3491     for flag; do
3492         case $flag in
3493             # Filter out MSVC cl.exe options from cflags that shouldn't
3494             # be passed to gas-preprocessor
3495             -M[TD]*)                                            ;;
3496             *)                  echo $flag                      ;;
3497         esac
3498    done
3499 }
3500
3501 ccc_flags(){
3502     for flag; do
3503         case $flag in
3504             -std=c99)           echo -c99                       ;;
3505             -mcpu=*)            echo -arch ${flag#*=}           ;;
3506             -mieee)             echo -ieee                      ;;
3507             -O*|-fast)          echo $flag                      ;;
3508             -fno-math-errno)    echo -assume nomath_errno       ;;
3509             -g)                 echo -g3                        ;;
3510             -Wall)              echo -msg_enable level2         ;;
3511             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3512             -Wl,*)              echo $flag                      ;;
3513             -f*|-W*)                                            ;;
3514             *)                  echo $flag                      ;;
3515         esac
3516    done
3517 }
3518
3519 cparser_flags(){
3520     for flag; do
3521         case $flag in
3522             -Wno-switch)             echo -Wno-switch-enum ;;
3523             -Wno-format-zero-length) ;;
3524             -Wdisabled-optimization) ;;
3525             -Wno-pointer-sign)       echo -Wno-other ;;
3526             *)                       echo $flag ;;
3527         esac
3528     done
3529 }
3530
3531 msvc_common_flags(){
3532     for flag; do
3533         case $flag in
3534             # In addition to specifying certain flags under the compiler
3535             # specific filters, they must be specified here as well or else the
3536             # generic catch all at the bottom will print the original flag.
3537             -Wall)                ;;
3538             -std=c99)             ;;
3539             # Common flags
3540             -fomit-frame-pointer) ;;
3541             -g)                   echo -Z7 ;;
3542             -fno-math-errno)      ;;
3543             -fno-common)          ;;
3544             -fno-signed-zeros)    ;;
3545             -fPIC)                ;;
3546             -mthumb)              ;;
3547             -march=*)             ;;
3548             -lz)                  echo zlib.lib ;;
3549             -lavifil32)           echo vfw32.lib ;;
3550             -lavicap32)           echo vfw32.lib user32.lib ;;
3551             -lx264)               echo libx264.lib ;;
3552             -l*)                  echo ${flag#-l}.lib ;;
3553             -LARGEADDRESSAWARE)   echo $flag ;;
3554             -L*)                  echo -libpath:${flag#-L} ;;
3555             *)                    echo $flag ;;
3556         esac
3557     done
3558 }
3559
3560 msvc_flags(){
3561     msvc_common_flags "$@"
3562     for flag; do
3563         case $flag in
3564             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3565                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3566                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3567                                        -wd4307 \
3568                                        -wd4273 -wd4554 -wd4701 ;;
3569         esac
3570     done
3571 }
3572
3573 icl_flags(){
3574     msvc_common_flags "$@"
3575     for flag; do
3576         case $flag in
3577             # Despite what Intel's documentation says -Wall, which is supported
3578             # on Windows, does enable remarks so disable them here.
3579             -Wall)                echo $flag -Qdiag-disable:remark ;;
3580             -std=c99)             echo -Qstd=c99 ;;
3581             -flto)                echo -ipo ;;
3582         esac
3583     done
3584 }
3585
3586 icc_flags(){
3587     for flag; do
3588         case $flag in
3589             -flto)                echo -ipo ;;
3590             *)                    echo $flag ;;
3591         esac
3592     done
3593 }
3594
3595 pgi_flags(){
3596     for flag; do
3597         case $flag in
3598             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3599             -fomit-frame-pointer) echo -Mnoframe ;;
3600             -g)                   echo -gopt ;;
3601             *)                    echo $flag ;;
3602         esac
3603     done
3604 }
3605
3606 suncc_flags(){
3607     for flag; do
3608         case $flag in
3609             -march=*|-mcpu=*)
3610                 case "${flag#*=}" in
3611                     native)                   echo -xtarget=native       ;;
3612                     v9|niagara)               echo -xarch=sparc          ;;
3613                     ultrasparc)               echo -xarch=sparcvis       ;;
3614                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3615                     i586|pentium)             echo -xchip=pentium        ;;
3616                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3617                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3618                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3619                     pentium4*)          echo -xtarget=pentium4           ;;
3620                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3621                     *-sse3)             echo -xarch=sse3                 ;;
3622                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3623                     bonnell)                   echo -xarch=ssse3         ;;
3624                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3625                     westmere)                  echo -xtarget=westmere    ;;
3626                     silvermont)                echo -xarch=sse4_2        ;;
3627                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3628                     core-avx*|ivybridge|haswell|broadwell)
3629                                                echo -xarch=avx           ;;
3630                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3631                     btver1)                    echo -xarch=amdsse4a      ;;
3632                     btver2|bdver*)             echo -xarch=avx           ;;
3633                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3634                     k8|opteron|athlon64|athlon-fx)
3635                                                echo -xarch=sse2a         ;;
3636                     athlon*)                   echo -xarch=pentium_proa  ;;
3637                 esac
3638                 ;;
3639             -std=c99)             echo -xc99              ;;
3640             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3641             -fPIC)                echo -KPIC -xcode=pic32 ;;
3642             -W*,*)                echo $flag              ;;
3643             -f*-*|-W*|-mimpure-text)                      ;;
3644             -shared)              echo -G                 ;;
3645             *)                    echo $flag              ;;
3646         esac
3647     done
3648 }
3649
3650 tms470_flags(){
3651     for flag; do
3652         case $flag in
3653             -march=*|-mcpu=*)
3654                 case "${flag#*=}" in
3655                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3656                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3657                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3658                     armv6*|arm11*)          echo -mv=6   ;;
3659                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3660                                             echo -mv=5e  ;;
3661                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3662                 esac
3663                 ;;
3664             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3665             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3666             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3667             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3668             -msoft-float)   echo --float_support=vfplib       ;;
3669             -O[0-3]|-mf=*)  echo $flag                        ;;
3670             -g)             echo -g -mn                       ;;
3671             -pds=*)         echo $flag                        ;;
3672             -D*|-I*)        echo $flag                        ;;
3673             --gcc|--abi=*)  echo $flag                        ;;
3674             -me)            echo $flag                        ;;
3675         esac
3676     done
3677 }
3678
3679 probe_cc(){
3680     pfx=$1
3681     _cc=$2
3682     first=$3
3683
3684     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3685     unset _ld_o _ldflags _ld_lib _ld_path
3686     unset _depflags _DEPCMD _DEPFLAGS
3687     _flags_filter=echo
3688
3689     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3690         true # no-op to avoid reading stdin in following checks
3691     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3692         _type=llvm_gcc
3693         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3694         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3695         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3696         _cflags_speed='-O3'
3697         _cflags_size='-Os'
3698     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3699         _type=gcc
3700         gcc_version=$($_cc --version | head -n1)
3701         gcc_basever=$($_cc -dumpversion)
3702         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3703         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3704         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3705         case $gcc_basever in
3706             2) ;;
3707             2.*) ;;
3708             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3709         esac
3710         if [ "$first" = true ]; then
3711             case $gcc_basever in
3712                 4.2*)
3713                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3714             esac
3715         fi
3716         _cflags_speed='-O3'
3717         _cflags_size='-Os'
3718     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3719         _type=icc
3720         _ident=$($_cc --version | head -n1)
3721         _depflags='-MMD'
3722         _cflags_speed='-O3'
3723         _cflags_size='-Os'
3724         _cflags_noopt='-O1'
3725         _flags_filter=icc_flags
3726     elif $_cc -v 2>&1 | grep -q xlc; then
3727         _type=xlc
3728         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3729         _cflags_speed='-O5'
3730         _cflags_size='-O5 -qcompact'
3731     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3732         _type=ccc
3733         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3734         _DEPFLAGS='-M'
3735         _cflags_speed='-fast'
3736         _cflags_size='-O1'
3737         _flags_filter=ccc_flags
3738     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3739         test -d "$sysroot" || die "No valid sysroot specified."
3740         _type=armcc
3741         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3742         armcc_conf="$PWD/armcc.conf"
3743         $_cc --arm_linux_configure                 \
3744              --arm_linux_config_file="$armcc_conf" \
3745              --configure_sysroot="$sysroot"        \
3746              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3747              die "Error creating armcc configuration file."
3748         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3749         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3750         as_default="${cross_prefix}gcc"
3751         _depflags='-MMD'
3752         _cflags_speed='-O3'
3753         _cflags_size='-Os'
3754     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3755         _type=tms470
3756         _ident=$($_cc -version | head -n1 | tr -s ' ')
3757         _flags='--gcc --abi=eabi -me'
3758         _cc_e='-ppl -fe=$@'
3759         _cc_o='-fe=$@'
3760         _depflags='-ppa -ppd=$(@:.o=.d)'
3761         _cflags_speed='-O3 -mf=5'
3762         _cflags_size='-O3 -mf=2'
3763         _flags_filter=tms470_flags
3764     elif $_cc -v 2>&1 | grep -q clang; then
3765         _type=clang
3766         _ident=$($_cc --version 2>/dev/null | head -n1)
3767         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3768         _cflags_speed='-O3'
3769         _cflags_size='-Os'
3770     elif $_cc -V 2>&1 | grep -q Sun; then
3771         _type=suncc
3772         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3773         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3774         _DEPFLAGS='-xM1 -xc99'
3775         _ldflags='-std=c99'
3776         _cflags_speed='-O5'
3777         _cflags_size='-O5 -xspace'
3778         _flags_filter=suncc_flags
3779     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3780         _type=pathscale
3781         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3782         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3783         _cflags_speed='-O2'
3784         _cflags_size='-Os'
3785         _flags_filter='filter_out -Wdisabled-optimization'
3786     elif $_cc -v 2>&1 | grep -q Open64; then
3787         _type=open64
3788         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3789         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3790         _cflags_speed='-O2'
3791         _cflags_size='-Os'
3792         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3793     elif $_cc -V 2>&1 | grep -q Portland; then
3794         _type=pgi
3795         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3796         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3797         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3798         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3799         _cflags_noopt="-O"
3800         _flags_filter=pgi_flags
3801     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3802         _type=armasm
3803         _ident=$($_cc | head -n1)
3804         # 4509: "This form of conditional instruction is deprecated"
3805         _flags="-nologo -ignore 4509"
3806         _flags_filter=armasm_flags
3807     elif $_cc 2>&1 | grep -q Intel; then
3808         _type=icl
3809         _ident=$($_cc 2>&1 | head -n1)
3810         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3811         # Not only is O3 broken on 13.x+ but it is slower on all previous
3812         # versions (tested) as well.
3813         _cflags_speed="-O2"
3814         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3815         if $_cc 2>&1 | grep -q Linker; then
3816             _ld_o='-out:$@'
3817         else
3818             _ld_o='-Fe$@'
3819         fi
3820         _cc_o='-Fo$@'
3821         _cc_e='-P'
3822         _flags_filter=icl_flags
3823         _ld_lib='lib%.a'
3824         _ld_path='-libpath:'
3825         # -Qdiag-error to make icl error when seeing certain unknown arguments
3826         _flags='-nologo -Qdiag-error:4044,10157'
3827         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3828         # with MSVC which enables it by default.
3829         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3830         disable stripping
3831     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3832         _type=msvc
3833         _ident=$($_cc 2>&1 | head -n1)
3834         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3835         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3836         _cflags_speed="-O2"
3837         _cflags_size="-O1"
3838         if $_cc -nologo- 2>&1 | grep -q Linker; then
3839             _ld_o='-out:$@'
3840         else
3841             _ld_o='-Fe$@'
3842         fi
3843         _cc_o='-Fo$@'
3844         _cc_e='-P -Fi$@'
3845         _flags_filter=msvc_flags
3846         _ld_lib='lib%.a'
3847         _ld_path='-libpath:'
3848         _flags='-nologo'
3849         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3850         disable stripping
3851     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3852         _type=cparser
3853         _ident=$($_cc --version | head -n1)
3854         _depflags='-MMD'
3855         _cflags_speed='-O4'
3856         _cflags_size='-O2'
3857         _flags_filter=cparser_flags
3858     fi
3859
3860     eval ${pfx}_type=\$_type
3861     eval ${pfx}_ident=\$_ident
3862 }
3863
3864 set_ccvars(){
3865     eval ${1}_C=\${_cc_c-\${${1}_C}}
3866     eval ${1}_E=\${_cc_e-\${${1}_E}}
3867     eval ${1}_O=\${_cc_o-\${${1}_O}}
3868
3869     if [ -n "$_depflags" ]; then
3870         eval ${1}_DEPFLAGS=\$_depflags
3871     else
3872         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3873         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3874         eval DEP${1}FLAGS=\$_flags
3875     fi
3876 }
3877
3878 probe_cc cc "$cc" "true"
3879 cflags_filter=$_flags_filter
3880 cflags_speed=$_cflags_speed
3881 cflags_size=$_cflags_size
3882 cflags_noopt=$_cflags_noopt
3883 add_cflags $_flags $_cflags
3884 cc_ldflags=$_ldflags
3885 set_ccvars CC
3886
3887 probe_cc hostcc "$host_cc"
3888 host_cflags_filter=$_flags_filter
3889 add_host_cflags  $_flags $_cflags
3890 set_ccvars HOSTCC
3891
3892 test -n "$cc_type" && enable $cc_type ||
3893     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3894
3895 : ${as_default:=$cc}
3896 : ${objcc_default:=$cc}
3897 : ${dep_cc_default:=$cc}
3898 : ${ld_default:=$cc}
3899 : ${host_ld_default:=$host_cc}
3900 set_default ar as objcc dep_cc ld host_ld windres
3901
3902 probe_cc as "$as"
3903 asflags_filter=$_flags_filter
3904 add_asflags $_flags $_cflags
3905 set_ccvars AS
3906
3907 probe_cc objcc "$objcc"
3908 objcflags_filter=$_flags_filter
3909 add_objcflags $_flags $_cflags
3910 set_ccvars OBJC
3911
3912 probe_cc ld "$ld"
3913 ldflags_filter=$_flags_filter
3914 add_ldflags $_flags $_ldflags
3915 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3916 LD_O=${_ld_o-$LD_O}
3917 LD_LIB=${_ld_lib-$LD_LIB}
3918 LD_PATH=${_ld_path-$LD_PATH}
3919
3920 probe_cc hostld "$host_ld"
3921 host_ldflags_filter=$_flags_filter
3922 add_host_ldflags $_flags $_ldflags
3923 HOSTLD_O=${_ld_o-$HOSTLD_O}
3924
3925 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3926     probe_cc depcc "$dep_cc"
3927     CCDEP=${_DEPCMD:-$DEPCMD}
3928     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3929     DEPCCFLAGS=$_flags
3930 fi
3931
3932 if $ar 2>&1 | grep -q Microsoft; then
3933     arflags="-nologo"
3934     ar_o='-out:$@'
3935 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3936     arflags="rq"
3937     ar_o='$@'
3938 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3939     arflags='-Xany -r -c'
3940     ar_o='$@'
3941 elif $ar 2>&1 | grep -q "\[D\] "; then
3942     arflags="rcD"
3943     ar_o='$@'
3944 else
3945     arflags="rc"
3946     ar_o='$@'
3947 fi
3948
3949 add_cflags $extra_cflags
3950 add_cxxflags $extra_cxxflags
3951 add_objcflags $extra_objcflags
3952 add_asflags $extra_cflags
3953
3954 if test -n "$sysroot"; then
3955     case "$cc_type" in
3956         gcc|llvm_gcc|clang)
3957             add_cppflags --sysroot="$sysroot"
3958             add_ldflags --sysroot="$sysroot"
3959 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3960             add_cppflags -isysroot "$sysroot"
3961             add_ldflags -isysroot "$sysroot"
3962         ;;
3963         tms470)
3964             add_cppflags -I"$sysinclude"
3965             add_ldflags  --sysroot="$sysroot"
3966         ;;
3967     esac
3968 fi
3969
3970 if test "$cpu" = host; then
3971     enabled cross_compile &&
3972         die "--cpu=host makes no sense when cross-compiling."
3973
3974     case "$cc_type" in
3975         gcc|llvm_gcc)
3976             check_native(){
3977                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3978                 sed -n "/cc1.*$1=/{
3979                             s/.*$1=\\([^ ]*\\).*/\\1/
3980                             p
3981                             q
3982                         }" $TMPE
3983             }
3984             cpu=$(check_native -march || check_native -mcpu)
3985         ;;
3986         clang)
3987             check_native(){
3988                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3989                 sed -n "/cc1.*-target-cpu /{
3990                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3991                             p
3992                             q
3993                         }" $TMPE
3994             }
3995             cpu=$(check_native -march)
3996         ;;
3997     esac
3998
3999     test "${cpu:-host}" = host &&
4000         die "--cpu=host not supported with compiler $cc"
4001 fi
4002
4003 # Deal with common $arch aliases
4004 case "$arch" in
4005     aarch64|arm64)
4006         arch="aarch64"
4007     ;;
4008     arm*|iPad*|iPhone*)
4009         arch="arm"
4010     ;;
4011     mips*|IP*)
4012         case "$arch" in
4013         *el)
4014             add_cppflags -EL
4015             add_ldflags -EL
4016         ;;
4017         *eb)
4018             add_cppflags -EB
4019             add_ldflags -EB
4020         ;;
4021         esac
4022         arch="mips"
4023     ;;
4024     parisc*|hppa*)
4025         arch="parisc"
4026     ;;
4027     "Power Macintosh"|ppc*|powerpc*)
4028         arch="ppc"
4029     ;;
4030     s390|s390x)
4031         arch="s390"
4032     ;;
4033     sh4|sh)
4034         arch="sh4"
4035     ;;
4036     sun4u|sparc*)
4037         arch="sparc"
4038     ;;
4039     tilegx|tile-gx)
4040         arch="tilegx"
4041     ;;
4042     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4043         arch="x86"
4044     ;;
4045 esac
4046
4047 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4048 enable $arch
4049
4050 # Add processor-specific flags
4051 if enabled aarch64; then
4052
4053     case $cpu in
4054         armv*)
4055             cpuflags="-march=$cpu"
4056         ;;
4057         *)
4058             cpuflags="-mcpu=$cpu"
4059         ;;
4060     esac
4061
4062 elif enabled alpha; then
4063
4064     cpuflags="-mcpu=$cpu"
4065
4066 elif enabled arm; then
4067
4068     check_arm_arch() {
4069         check_cpp_condition stddef.h \
4070             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4071             $cpuflags
4072     }
4073
4074     probe_arm_arch() {
4075         if   check_arm_arch 4;        then echo armv4;
4076         elif check_arm_arch 4T;       then echo armv4t;
4077         elif check_arm_arch 5;        then echo armv5;
4078         elif check_arm_arch 5E;       then echo armv5e;
4079         elif check_arm_arch 5T;       then echo armv5t;
4080         elif check_arm_arch 5TE;      then echo armv5te;
4081         elif check_arm_arch 5TEJ;     then echo armv5te;
4082         elif check_arm_arch 6;        then echo armv6;
4083         elif check_arm_arch 6J;       then echo armv6j;
4084         elif check_arm_arch 6K;       then echo armv6k;
4085         elif check_arm_arch 6Z;       then echo armv6z;
4086         elif check_arm_arch 6ZK;      then echo armv6zk;
4087         elif check_arm_arch 6T2;      then echo armv6t2;
4088         elif check_arm_arch 7;        then echo armv7;
4089         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4090         elif check_arm_arch 7S;       then echo armv7-a;
4091         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4092         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4093         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4094         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4095         fi
4096     }
4097
4098     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4099
4100     case $cpu in
4101         armv*)
4102             cpuflags="-march=$cpu"
4103             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4104         ;;
4105         *)
4106             cpuflags="-mcpu=$cpu"
4107             case $cpu in
4108                 cortex-a*)                               subarch=armv7a  ;;
4109                 cortex-r*)                               subarch=armv7r  ;;
4110                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4111                 arm11*)                                  subarch=armv6   ;;
4112                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4113                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4114                 *)                             subarch=$(probe_arm_arch) ;;
4115             esac
4116         ;;
4117     esac
4118
4119     case "$subarch" in
4120         armv5t*)    enable fast_clz                ;;
4121         armv[6-8]*)
4122             enable fast_clz
4123             disabled fast_unaligned || enable fast_unaligned
4124             ;;
4125     esac
4126
4127 elif enabled avr32; then
4128
4129     case $cpu in
4130         ap7[02]0[0-2])
4131             subarch="avr32_ap"
4132             cpuflags="-mpart=$cpu"
4133         ;;
4134         ap)
4135             subarch="avr32_ap"
4136             cpuflags="-march=$cpu"
4137         ;;
4138         uc3[ab]*)
4139             subarch="avr32_uc"
4140             cpuflags="-mcpu=$cpu"
4141         ;;
4142         uc)
4143             subarch="avr32_uc"
4144             cpuflags="-march=$cpu"
4145         ;;
4146     esac
4147
4148 elif enabled bfin; then
4149
4150     cpuflags="-mcpu=$cpu"
4151
4152 elif enabled mips; then
4153
4154     cpuflags="-march=$cpu"
4155
4156     case $cpu in
4157         24kc)
4158             disable mips32r6
4159             disable mips64r2
4160             disable mips64r6
4161             disable mipsfpu
4162             disable mipsdsp
4163             disable mipsdspr2
4164             disable msa
4165         ;;
4166         24kf*)
4167             disable mips32r6
4168             disable mips64r2
4169             disable mips64r6
4170             disable mipsdsp
4171             disable mipsdspr2
4172             disable msa
4173         ;;
4174         24kec|34kc|1004kc)
4175             disable mips32r6
4176             disable mips64r2
4177             disable mips64r6
4178             disable mipsfpu
4179             disable mipsdspr2
4180             disable msa
4181         ;;
4182         24kef*|34kf*|1004kf*)
4183             disable mips32r6
4184             disable mips64r2
4185             disable mips64r6
4186             disable mipsdspr2
4187             disable msa
4188         ;;
4189         74kc)
4190             disable mips32r6
4191             disable mips64r2
4192             disable mips64r6
4193             disable mipsfpu
4194             disable msa
4195         ;;
4196         74kf)
4197             disable mips32r6
4198             disable mips64r2
4199             disable mips64r6
4200             disable msa
4201         ;;
4202         p5600)
4203             disable mips32r6
4204             disable mips64r2
4205             disable mips64r6
4206             disable mipsdsp
4207             disable mipsdspr2
4208             check_cflags "-mtune=p5600" &&
4209             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4210             add_asflags "-mfp64"
4211         ;;
4212         i6400)
4213             disable mips32r2
4214             disable mips32r6
4215             disable mips64r2
4216             disable mipsdsp
4217             disable mipsdspr2
4218             check_cflags "-mtune=i6400 -mabi=64" &&
4219             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4220             check_ldflags "-mabi=64" &&
4221             add_asflags "-mfp64"
4222         ;;
4223         loongson*)
4224             disable mips32r2
4225             disable mips32r6
4226             disable mips64r2
4227             disable mips64r6
4228             disable mipsfpu
4229             disable mipsdsp
4230             disable mipsdspr2
4231             disable msa
4232             enable local_aligned_8 local_aligned_16 local_aligned_32
4233             enable simd_align_16
4234             enable fast_64bit
4235             enable fast_clz
4236             enable fast_cmov
4237             enable fast_unaligned
4238             disable aligned_stack
4239             case $cpu in
4240                 loongson3*)
4241                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4242                 ;;
4243                 loongson2e)
4244                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4245                 ;;
4246                 loongson2f)
4247                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4248                 ;;
4249             esac
4250         ;;
4251         generic)
4252             disable mips64r6
4253             disable msa
4254         ;;
4255         *)
4256             # Unknown CPU. Disable everything.
4257             warn "unknown CPU. Disabling all MIPS optimizations."
4258             disable mipsfpu
4259             disable mips32r2
4260             disable mips32r6
4261             disable mips64r2
4262             disable mips64r6
4263             disable mipsdsp
4264             disable mipsdspr2
4265             disable msa
4266         ;;
4267     esac
4268
4269 elif enabled ppc; then
4270
4271     disable ldbrx
4272
4273     case $(tolower $cpu) in
4274         601|ppc601|powerpc601)
4275             cpuflags="-mcpu=601"
4276             disable altivec
4277         ;;
4278         603*|ppc603*|powerpc603*)
4279             cpuflags="-mcpu=603"
4280             disable altivec
4281         ;;
4282         604*|ppc604*|powerpc604*)
4283             cpuflags="-mcpu=604"
4284             disable altivec
4285         ;;
4286         g3|75*|ppc75*|powerpc75*)
4287             cpuflags="-mcpu=750"
4288             disable altivec
4289         ;;
4290         g4|745*|ppc745*|powerpc745*)
4291             cpuflags="-mcpu=7450"
4292             disable vsx
4293         ;;
4294         74*|ppc74*|powerpc74*)
4295             cpuflags="-mcpu=7400"
4296             disable vsx
4297         ;;
4298         g5|970|ppc970|powerpc970)
4299             cpuflags="-mcpu=970"
4300             disable vsx
4301         ;;
4302         power[3-6]*)
4303             cpuflags="-mcpu=$cpu"
4304             disable vsx
4305         ;;
4306         power[7-8]*)
4307             cpuflags="-mcpu=$cpu"
4308         ;;
4309         cell)
4310             cpuflags="-mcpu=cell"
4311             enable ldbrx
4312             disable vsx
4313         ;;
4314         e500mc)
4315             cpuflags="-mcpu=e500mc"
4316             disable altivec
4317         ;;
4318         e500v2)
4319             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4320             disable altivec
4321             disable dcbzl
4322         ;;
4323         e500)
4324             cpuflags="-mcpu=8540 -mhard-float"
4325             disable altivec
4326             disable dcbzl
4327         ;;
4328     esac
4329
4330 elif enabled sparc; then
4331
4332     case $cpu in
4333         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4334             cpuflags="-mcpu=$cpu"
4335         ;;
4336         ultrasparc*|niagara[234])
4337             cpuflags="-mcpu=$cpu"
4338         ;;
4339     esac
4340
4341 elif enabled x86; then
4342
4343     case $cpu in
4344         i[345]86|pentium)
4345             cpuflags="-march=$cpu"
4346             disable i686
4347             disable mmx
4348         ;;
4349         # targets that do NOT support nopl and conditional mov (cmov)
4350         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4351             cpuflags="-march=$cpu"
4352             disable i686
4353         ;;
4354         # targets that do support nopl and conditional mov (cmov)
4355         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4356         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4357             cpuflags="-march=$cpu"
4358             enable i686
4359             enable fast_cmov
4360         ;;
4361         # targets that do support conditional mov but on which it's slow
4362         pentium4|pentium4m|prescott|nocona)
4363             cpuflags="-march=$cpu"
4364             enable i686
4365             disable fast_cmov
4366         ;;
4367     esac
4368
4369 fi
4370
4371 if [ "$cpu" != generic ]; then
4372     add_cflags  $cpuflags
4373     add_asflags $cpuflags
4374     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4375 fi
4376
4377 # compiler sanity check
4378 check_exec <<EOF
4379 int main(void){ return 0; }
4380 EOF
4381 if test "$?" != 0; then
4382     echo "$cc is unable to create an executable file."
4383     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4384         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4385         echo "Only do this if you know what cross compiling means."
4386     fi
4387     die "C compiler test failed."
4388 fi
4389
4390 add_cppflags -D_ISOC99_SOURCE
4391 add_cxxflags -D__STDC_CONSTANT_MACROS
4392 check_cflags -std=c99
4393 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4394 #include <stdlib.h>
4395 EOF
4396 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4397 #include <stdlib.h>
4398 EOF
4399
4400 add_host_cppflags -D_ISOC99_SOURCE
4401 check_host_cflags -std=c99
4402 check_host_cflags -Wall
4403 check_host_cflags -O3
4404
4405 check_64bit(){
4406     arch32=$1
4407     arch64=$2
4408     expr=$3
4409     check_code cc "" "int test[2*($expr) - 1]" &&
4410         subarch=$arch64 || subarch=$arch32
4411 }
4412
4413 case "$arch" in
4414     aarch64|alpha|ia64)
4415         spic=$shared
4416     ;;
4417     mips)
4418         check_64bit mips mips64 '_MIPS_SIM > 1'
4419         spic=$shared
4420     ;;
4421     parisc)
4422         check_64bit parisc parisc64 'sizeof(void *) > 4'
4423         spic=$shared
4424     ;;
4425     ppc)
4426         check_64bit ppc ppc64 'sizeof(void *) > 4'
4427         spic=$shared
4428     ;;
4429     s390)
4430         check_64bit s390 s390x 'sizeof(void *) > 4'
4431         spic=$shared
4432     ;;
4433     sparc)
4434         check_64bit sparc sparc64 'sizeof(void *) > 4'
4435         spic=$shared
4436     ;;
4437     x86)
4438         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4439         # Treat x32 as x64 for now. Note it also needs spic=$shared
4440         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4441             subarch=x86_64
4442         if test "$subarch" = "x86_64"; then
4443             spic=$shared
4444         fi
4445     ;;
4446     ppc)
4447         check_cc <<EOF && subarch="ppc64"
4448         int test[(int)sizeof(char*) - 7];
4449 EOF
4450     ;;
4451 esac
4452
4453 enable $subarch
4454 enabled spic && enable_weak pic
4455
4456 # OS specific
4457 case $target_os in
4458     aix)
4459         SHFLAGS=-shared
4460         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4461         enabled shared && add_ldflags -Wl,-brtl
4462         ;;
4463     android)
4464         disable symver
4465         enable section_data_rel_ro
4466         SLIB_INSTALL_NAME='$(SLIBNAME)'
4467         SLIB_INSTALL_LINKS=
4468         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4469         ;;
4470     haiku)
4471         prefix_default="/boot/common"
4472         network_extralibs="-lnetwork"
4473         host_libs=
4474         ;;
4475     sunos)
4476         SHFLAGS='-shared -Wl,-h,$$(@F)'
4477         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4478         network_extralibs="-lsocket -lnsl"
4479         add_cppflags -D__EXTENSIONS__
4480         # When using suncc to build, the Solaris linker will mark
4481         # an executable with each instruction set encountered by
4482         # the Solaris assembler.  As our libraries contain their own
4483         # guards for processor-specific code, instead suppress
4484         # generation of the HWCAPS ELF section on Solaris x86 only.
4485         enabled_all suncc x86 &&
4486             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4487             add_ldflags -Wl,-M,mapfile
4488         nm_default='nm -P -g'
4489         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4490         ;;
4491     netbsd)
4492         disable symver
4493         oss_indev_extralibs="-lossaudio"
4494         oss_outdev_extralibs="-lossaudio"
4495         enabled gcc || check_ldflags -Wl,-zmuldefs
4496         ;;
4497     openbsd|bitrig)
4498         disable symver
4499         SHFLAGS='-shared'
4500         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4501         SLIB_INSTALL_LINKS=
4502         oss_indev_extralibs="-lossaudio"
4503         oss_outdev_extralibs="-lossaudio"
4504         ;;
4505     dragonfly)
4506         disable symver
4507         ;;
4508     freebsd)
4509         ;;
4510     bsd/os)
4511         add_extralibs -lpoll -lgnugetopt
4512         strip="strip -d"
4513         ;;
4514     darwin)
4515         enabled ppc && add_asflags -force_cpusubtype_ALL
4516         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4517         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4518         strip="${strip} -x"
4519         add_ldflags -Wl,-dynamic,-search_paths_first
4520         SLIBSUF=".dylib"
4521         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4522         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4523         objformat="macho"
4524         enabled x86_64 && objformat="macho64"
4525         enabled_any pic shared x86_64 ||
4526             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4527         ;;
4528     msys*)
4529         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4530         ;;
4531     mingw32*|mingw64*)
4532         if test $target_os = "mingw32ce"; then
4533             disable network
4534         else
4535             target_os=mingw32
4536         fi
4537         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4538         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4539         LIBTARGET=i386
4540         if enabled x86_64; then
4541             LIBTARGET="i386:x86-64"
4542         elif enabled arm; then
4543             LIBTARGET=arm-wince
4544         fi
4545         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4546         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4547         shlibdir_default="$bindir_default"
4548         SLIBPREF=""
4549         SLIBSUF=".dll"
4550         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4551         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4552         dlltool="${cross_prefix}dlltool"
4553         if check_cmd lib.exe -list; then
4554             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4555             if enabled x86_64; then
4556                 LIBTARGET=x64
4557             fi
4558         elif check_cmd $dlltool --version; then
4559             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4560         fi
4561         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4562         SLIB_INSTALL_LINKS=
4563         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4564         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4565         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4566         objformat="win32"
4567         ranlib=:
4568         enable dos_paths
4569         check_ldflags -Wl,--nxcompat,--dynamicbase
4570         # Lets work around some stupidity in binutils.
4571         # ld will strip relocations from executables even though we need them
4572         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4573         # however ld then forgets what the entry point should be (oops) so we
4574         # have to manually (re)set it.
4575         if enabled x86_32; then
4576             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4577         elif enabled x86_64; then
4578             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4579             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4580             # Set image base >4GB for extra entropy with HEASLR
4581             add_ldexeflags -Wl,--image-base,0x140000000
4582             append SHFLAGS -Wl,--image-base,0x180000000
4583         fi
4584         ;;
4585     win32|win64)
4586         disable symver
4587         if enabled shared; then
4588             # Link to the import library instead of the normal static library
4589             # for shared libs.
4590             LD_LIB='%.lib'
4591             # Cannot build both shared and static libs with MSVC or icl.
4592             disable static
4593         fi
4594         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4595         shlibdir_default="$bindir_default"
4596         SLIBPREF=""
4597         SLIBSUF=".dll"
4598         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4599         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4600         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4601         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4602         SLIB_INSTALL_LINKS=
4603         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4604         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4605         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4606         objformat="win32"
4607         ranlib=:
4608         enable dos_paths
4609         ;;
4610     cygwin*)
4611         target_os=cygwin
4612         shlibdir_default="$bindir_default"
4613         SLIBPREF="cyg"
4614         SLIBSUF=".dll"
4615         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4616         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4617         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4618         SLIB_INSTALL_LINKS=
4619         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4620         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4621         objformat="win32"
4622         enable dos_paths
4623         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4624         ;;
4625     *-dos|freedos|opendos)
4626         network_extralibs="-lsocket"
4627         objformat="coff"
4628         enable dos_paths
4629         add_cppflags -U__STRICT_ANSI__
4630         ;;
4631     linux)
4632         enable dv1394
4633         enable section_data_rel_ro
4634         ;;
4635     irix*)
4636         target_os=irix
4637         ranlib="echo ignoring ranlib"
4638         ;;
4639     os/2*)
4640         strip="lxlite -CS"
4641         ln_s="cp -f"
4642         objformat="aout"
4643         add_cppflags -D_GNU_SOURCE
4644         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4645         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4646         LIBSUF="_s.a"
4647         SLIBPREF=""
4648         SLIBSUF=".dll"
4649         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4650         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4651         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4652             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4653             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4654             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4655             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4656         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4657             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4658         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4659         enable dos_paths
4660         enable_weak os2threads
4661         ;;
4662     gnu/kfreebsd)
4663         add_cppflags -D_BSD_SOURCE
4664         ;;
4665     gnu)
4666         ;;
4667     qnx)
4668         add_cppflags -D_QNX_SOURCE
4669         network_extralibs="-lsocket"
4670         ;;
4671     symbian)
4672         SLIBSUF=".dll"
4673         enable dos_paths
4674         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4675         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4676         add_ldflags -Wl,--target1-abs,--no-undefined \
4677                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4678                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4679         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4680                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4681                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4682         ;;
4683     osf1)
4684         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4685         ;;
4686     minix)
4687         ;;
4688     plan9)
4689         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4690                      -D_REENTRANT_SOURCE        \
4691                      -D_RESEARCH_SOURCE         \
4692                      -DFD_SETSIZE=96            \
4693                      -DHAVE_SOCK_OPTS
4694         add_compat strtod.o strtod=avpriv_strtod
4695         network_extralibs='-lbsd'
4696         exeobjs=compat/plan9/main.o
4697         disable ffserver
4698         cp_f='cp'
4699         ;;
4700     none)
4701         ;;
4702     *)
4703         die "Unknown OS '$target_os'."
4704         ;;
4705 esac
4706
4707 # test if creating links works
4708 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4709 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4710 mkdir "$link_dest"
4711 $ln_s "$link_dest" "$link_name"
4712 touch "$link_dest/test_file"
4713 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4714     # create link to source path
4715     [ -e src ] && rm src
4716     $ln_s "$source_path" src
4717     source_link=src
4718 else
4719     # creating directory links doesn't work
4720     # fall back to using the full source path
4721     source_link="$source_path"
4722 fi
4723 # cleanup
4724 rm -r "$link_dest"
4725 rm -r "$link_name"
4726
4727 # determine libc flavour
4728
4729 probe_libc(){
4730     pfx=$1
4731     pfx_no_=${pfx%_}
4732     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4733     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4734         eval ${pfx}libc_type=uclibc
4735         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4736     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4737         eval ${pfx}libc_type=glibc
4738         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4739     # MinGW headers can be installed on Cygwin, so check for newlib first.
4740     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4741         eval ${pfx}libc_type=newlib
4742         add_${pfx}cppflags -U__STRICT_ANSI__
4743     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4744     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4745         eval ${pfx}libc_type=mingw64
4746         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4747             add_compat msvcrt/snprintf.o
4748             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4749         fi
4750         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4751         eval test \$${pfx_no_}cc_type = "gcc" &&
4752             add_${pfx}cppflags -D__printf__=__gnu_printf__
4753     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4754          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4755         eval ${pfx}libc_type=mingw32
4756         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4757             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4758             die "ERROR: MinGW32 runtime version must be >= 3.15."
4759         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4760         eval test \$${pfx_no_}cc_type = "gcc" &&
4761             add_${pfx}cppflags -D__printf__=__gnu_printf__
4762     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4763         eval ${pfx}libc_type=msvcrt
4764         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4765             if [ "$pfx" = host_ ]; then
4766                 add_host_cppflags -Dsnprintf=_snprintf
4767             else
4768                 add_compat strtod.o strtod=avpriv_strtod
4769                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4770                                              _snprintf=avpriv_snprintf  \
4771                                              vsnprintf=avpriv_vsnprintf
4772             fi
4773         fi
4774         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4775         # 0x601 by default unless something else is set by the user.
4776         # This can easily lead to us detecting functions only present
4777         # in such new versions and producing binaries requiring windows 7.0.
4778         # Therefore explicitly set the default to XP unless the user has
4779         # set something else on the command line.
4780         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4781         # family. For these cases, configure is free to use any functions
4782         # found in the SDK headers by default. (Alternatively, we could force
4783         # _WIN32_WINNT to 0x0602 in that case.)
4784         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4785             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4786 #ifdef WINAPI_FAMILY
4787 #include <winapifamily.h>
4788 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4789 #error not desktop
4790 #endif
4791 #endif
4792 EOF
4793     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4794         eval ${pfx}libc_type=klibc
4795     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4796         eval ${pfx}libc_type=bionic
4797     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4798         eval ${pfx}libc_type=solaris
4799         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4800     fi
4801     check_${pfx}cc <<EOF
4802 #include <time.h>
4803 void *v = localtime_r;
4804 EOF
4805 test "$?" != 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
4806 #include <time.h>
4807 void *v = localtime_r;
4808 EOF
4809
4810 }
4811
4812 probe_libc
4813 test -n "$libc_type" && enable libc_$libc_type
4814 probe_libc host_
4815 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4816
4817 case $libc_type in
4818     bionic)
4819         add_compat strtod.o strtod=avpriv_strtod
4820         ;;
4821 esac
4822
4823 # hacks for compiler/libc/os combinations
4824
4825 if enabled_all tms470 libc_glibc; then
4826     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4827     add_cppflags -D__USER_LABEL_PREFIX__=
4828     add_cppflags -D__builtin_memset=memset
4829     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4830     add_cflags   -pds=48    # incompatible redefinition of macro
4831 fi
4832
4833 if enabled_all ccc libc_glibc; then
4834     add_ldflags -Wl,-z,now  # calls to libots crash without this
4835 fi
4836
4837 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4838     add_cppflags '-I\$(SRC_PATH)/compat/float'
4839
4840 esc(){
4841     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4842 }
4843
4844 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4845
4846 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4847
4848 set_default libdir
4849 : ${shlibdir_default:="$libdir"}
4850 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4851
4852 set_default $PATHS_LIST
4853 set_default nm
4854
4855 # we need to build at least one lib type
4856 if ! enabled_any static shared; then
4857     cat <<EOF
4858 At least one library type must be built.
4859 Specify --enable-static to build the static libraries or --enable-shared to
4860 build the shared libraries as well. To only build the shared libraries specify
4861 --disable-static in addition to --enable-shared.
4862 EOF
4863     exit 1;
4864 fi
4865
4866 die_license_disabled() {
4867     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4868 }
4869
4870 die_license_disabled_gpl() {
4871     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4872 }
4873
4874 die_license_disabled gpl frei0r
4875 die_license_disabled gpl libcdio
4876 die_license_disabled gpl librubberband
4877 die_license_disabled gpl libsmbclient
4878 die_license_disabled gpl libutvideo
4879 die_license_disabled gpl libvidstab
4880 die_license_disabled gpl libx264
4881 die_license_disabled gpl libx265
4882 die_license_disabled gpl libxavs
4883 die_license_disabled gpl libxvid
4884 die_license_disabled gpl x11grab
4885
4886 die_license_disabled nonfree libfaac
4887 die_license_disabled nonfree nvenc
4888 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4889 enabled gpl && die_license_disabled_gpl nonfree openssl
4890
4891 die_license_disabled version3 gmp
4892 die_license_disabled version3 libopencore_amrnb
4893 die_license_disabled version3 libopencore_amrwb
4894 die_license_disabled version3 libsmbclient
4895 die_license_disabled version3 libvo_amrwbenc
4896
4897 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4898
4899 disabled optimizations || check_cflags -fomit-frame-pointer
4900
4901 enable_weak_pic() {
4902     disabled pic && return
4903     enable pic
4904     add_cppflags -DPIC
4905     case "$target_os" in
4906     mingw*|cygwin*)
4907         ;;
4908     *)
4909         add_cflags -fPIC
4910         ;;
4911     esac
4912     add_asflags  -fPIC
4913 }
4914
4915 enabled pic && enable_weak_pic
4916
4917 check_cc <<EOF || die "Symbol mangling check failed."
4918 int ff_extern;
4919 EOF
4920 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4921 extern_prefix=${sym%%ff_extern*}
4922
4923 check_cc <<EOF && enable_weak inline_asm
4924 void foo(void) { __asm__ volatile ("" ::); }
4925 EOF
4926
4927 _restrict=
4928 for restrict_keyword in restrict __restrict__ __restrict; do
4929     check_cc <<EOF && _restrict=$restrict_keyword && break
4930 void foo(char * $restrict_keyword p);
4931 EOF
4932 done
4933
4934 check_cc <<EOF && enable pragma_deprecated
4935 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4936 EOF
4937
4938 check_cc <<EOF && enable attribute_packed
4939 struct { int x; } __attribute__((packed)) x;
4940 EOF
4941
4942 check_cc <<EOF && enable attribute_may_alias
4943 union { int x; } __attribute__((may_alias)) x;
4944 EOF
4945
4946 check_cc <<EOF || die "endian test failed"
4947 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4948 EOF
4949 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4950
4951 if ! enabled ppc64 || enabled bigendian; then
4952     disable vsx
4953 fi
4954
4955 check_gas() {
4956     log "check_gas using '$as' as AS"
4957     # :vararg is used on aarch64, arm and ppc altivec
4958     check_as <<EOF || return 1
4959 .macro m n, y:vararg=0
4960 \n: .int \y
4961 .endm
4962 m x
4963 EOF
4964     # .altmacro is only used in arm asm
4965     ! enabled arm || check_as <<EOF || return 1
4966 .altmacro
4967 EOF
4968     enable gnu_as
4969     return 0
4970 }
4971
4972 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4973     nogas=:
4974     enabled_any arm aarch64 && nogas=die
4975     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4976     as_noop=-v
4977
4978     case $as_type in
4979         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4980         gcc)  gaspp_as_type=gas ;;
4981         *)    gaspp_as_type=$as_type ;;
4982     esac
4983
4984     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4985
4986     test "${as#*gas-preprocessor.pl}" != "$as" ||
4987     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4988         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4989
4990     if ! check_gas ; then
4991         as=${gas:=$as}
4992         check_gas || \
4993             $nogas "GNU assembler not found, install/update gas-preprocessor"
4994     fi
4995
4996     check_as <<EOF && enable as_func
4997 .func test
4998 .endfunc
4999 EOF
5000 fi
5001
5002 check_inline_asm inline_asm_labels '"1:\n"'
5003
5004 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5005
5006 if enabled aarch64; then
5007     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5008     # internal assembler in clang 3.3 does not support this instruction
5009     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5010     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5011
5012     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5013
5014 elif enabled alpha; then
5015
5016     check_cflags -mieee
5017
5018 elif enabled arm; then
5019
5020     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5021
5022     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5023 float func(float a, float b){ return a+b; }
5024 EOF
5025
5026     enabled thumb && check_cflags -mthumb || check_cflags -marm
5027
5028     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5029         enable vfp_args
5030     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5031         enable vfp_args
5032     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5033         case "${cross_prefix:-$cc}" in
5034             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5035             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5036 __asm__ (".eabi_attribute 28, 1");
5037 int main(void) { return 0; }
5038 EOF
5039         esac
5040         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5041     fi
5042
5043     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5044     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5045     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5046     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5047     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5048     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5049     enabled setend  && check_insn setend  'setend be'
5050
5051     [ $target_os = linux ] || [ $target_os = android ] ||
5052         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5053             $ARCH_EXT_LIST_ARM
5054
5055     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5056
5057     check_as <<EOF && enable as_dn_directive
5058 ra .dn d0.i16
5059 .unreq ra
5060 EOF
5061
5062     # llvm's integrated assembler supports .object_arch from llvm 3.5
5063     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5064 .object_arch armv4
5065 EOF
5066
5067     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5068
5069 elif enabled mips; then
5070
5071     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5072     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5073     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5074
5075     # Enable minimum ISA based on selected options
5076     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5077         add_cflags "-mips64r2"
5078         add_asflags "-mips64r2"
5079     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5080         add_cflags "-mips64"
5081         add_asflags "-mips64"
5082     elif enabled mipsdsp || enabled mipsdspr2; then
5083         add_cflags "-mips32r2 -mfp32"
5084         add_asflags "-mips32r2 -mfp32"
5085     fi
5086
5087     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5088      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5089     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5090      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5091     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5092      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5093     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5094      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5095
5096     enabled msa && add_asflags "-mmsa"
5097
5098 elif enabled parisc; then
5099
5100     if enabled gcc; then
5101         case $($cc -dumpversion) in
5102             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5103         esac
5104     fi
5105
5106 elif enabled ppc; then
5107
5108     enable local_aligned_8 local_aligned_16 local_aligned_32
5109
5110     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5111     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5112     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5113     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5114
5115     # AltiVec flags: The FSF version of GCC differs from the Apple version
5116     if enabled altivec; then
5117         check_cflags -maltivec -mabi=altivec &&
5118         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5119         check_cflags -faltivec
5120
5121         # check if our compiler supports Motorola AltiVec C API
5122         check_cc <<EOF || disable altivec
5123 $inc_altivec_h
5124 int main(void) {
5125     vector signed int v1 = (vector signed int) { 0 };
5126     vector signed int v2 = (vector signed int) { 1 };
5127     v1 = vec_add(v1, v2);
5128     return 0;
5129 }
5130 EOF
5131
5132         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5133     fi
5134
5135     if enabled vsx; then
5136         check_cflags -mvsx &&
5137         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5138     fi
5139
5140     if enabled power8; then
5141         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5142     fi
5143
5144 elif enabled x86; then
5145
5146     check_builtin rdtsc    intrin.h   "__rdtsc()"
5147     check_builtin mm_empty mmintrin.h "_mm_empty()"
5148
5149     enable local_aligned_8 local_aligned_16 local_aligned_32
5150
5151     # check whether EBP is available on x86
5152     # As 'i' is stored on the stack, this program will crash
5153     # if the base pointer is used to access it because the
5154     # base pointer is cleared in the inline assembly code.
5155     check_exec_crash <<EOF && enable ebp_available
5156 volatile int i=0;
5157 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5158 return i;
5159 EOF
5160
5161     # check whether EBX is available on x86
5162     check_inline_asm ebx_available '""::"b"(0)' &&
5163         check_inline_asm ebx_available '"":::"%ebx"'
5164
5165     # check whether xmm clobbers are supported
5166     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5167
5168     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5169         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5170
5171     # check whether binutils is new enough to compile SSSE3/MMXEXT
5172     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5173     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5174
5175     if ! disabled_any asm mmx yasm; then
5176         if check_cmd $yasmexe --version; then
5177             enabled x86_64 && yasm_extra="-m amd64"
5178             yasm_debug="-g dwarf2"
5179         elif check_cmd nasm -v; then
5180             yasmexe=nasm
5181             yasm_debug="-g -F dwarf"
5182             if enabled x86_64; then
5183                 case "$objformat" in
5184                     elf)   objformat=elf64 ;;
5185                     win32) objformat=win64 ;;
5186                 esac
5187             fi
5188         fi
5189
5190         YASMFLAGS="-f $objformat $yasm_extra"
5191         enabled pic               && append YASMFLAGS "-DPIC"
5192         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5193         case "$objformat" in
5194             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5195         esac
5196
5197         check_yasm "movbe ecx, [5]" && enable yasm ||
5198             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5199         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5200         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5201         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5202         check_yasm "CPU amdnop" || disable cpunop
5203     fi
5204
5205     case "$cpu" in
5206         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5207             disable fast_clz
5208         ;;
5209     esac
5210
5211 fi
5212
5213 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5214
5215 check_ldflags -Wl,--as-needed
5216 check_ldflags -Wl,-z,noexecstack
5217
5218 if check_func dlopen; then
5219     ldl=
5220 elif check_func dlopen -ldl; then
5221     ldl=-ldl
5222 fi
5223
5224 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5225 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5226 frei0r_filter_extralibs='$ldl'
5227 frei0r_src_filter_extralibs='$ldl'
5228 ladspa_filter_extralibs='$ldl'
5229 nvenc_encoder_extralibs='$ldl'
5230
5231 if ! disabled network; then
5232     check_func getaddrinfo $network_extralibs
5233     check_func inet_aton $network_extralibs
5234
5235     check_type netdb.h "struct addrinfo"
5236     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5237     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5238     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5239     check_type poll.h "struct pollfd"
5240     check_type netinet/sctp.h "struct sctp_event_subscribe"
5241     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5242     check_type netinet/in.h "struct sockaddr_in6"
5243     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5244     check_type "sys/types.h sys/socket.h" socklen_t
5245
5246     # Prefer arpa/inet.h over winsock2
5247     if check_header arpa/inet.h ; then
5248         check_func closesocket
5249     elif check_header winsock2.h ; then
5250         check_func_headers winsock2.h closesocket -lws2 &&
5251             network_extralibs="-lws2" ||
5252         { check_func_headers winsock2.h closesocket -lws2_32 &&
5253             network_extralibs="-lws2_32"; } || disable winsock2_h network
5254         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5255
5256         check_type ws2tcpip.h socklen_t
5257         check_type ws2tcpip.h "struct addrinfo"
5258         check_type ws2tcpip.h "struct group_source_req"
5259         check_type ws2tcpip.h "struct ip_mreq_source"
5260         check_type ws2tcpip.h "struct ipv6_mreq"
5261         check_type winsock2.h "struct pollfd"
5262         check_struct winsock2.h "struct sockaddr" sa_len
5263         check_type ws2tcpip.h "struct sockaddr_in6"
5264         check_type ws2tcpip.h "struct sockaddr_storage"
5265     else
5266         disable network
5267     fi
5268 fi
5269
5270 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5271 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5272 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5273 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5274 check_builtin sarestart signal.h "SA_RESTART"
5275 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5276 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5277 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5278
5279 case "$custom_allocator" in
5280     jemalloc)
5281         # jemalloc by default does not use a prefix
5282         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5283     ;;
5284     tcmalloc)
5285         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5286         malloc_prefix=tc_
5287     ;;
5288 esac
5289
5290 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5291 check_func  ${malloc_prefix}memalign            && enable memalign
5292 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5293
5294 check_func  access
5295 check_func  arc4random
5296 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5297 check_func  fcntl
5298 check_func  fork
5299 check_func  gethrtime
5300 check_func  getopt
5301 check_func  getrusage
5302 check_func  gettimeofday
5303 check_func  isatty
5304 check_func  mach_absolute_time
5305 check_func  mkstemp
5306 check_func  mmap
5307 check_func  mprotect
5308 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5309 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5310 check_func  sched_getaffinity
5311 check_func  setrlimit
5312 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5313 check_func  strerror_r
5314 check_func  sysconf
5315 check_func  sysctl
5316 check_func  usleep
5317
5318 check_func_headers conio.h kbhit
5319 check_func_headers io.h setmode
5320 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5321 check_func_headers stdlib.h getenv
5322 check_func_headers sys/stat.h lstat
5323
5324 check_func_headers windows.h CoTaskMemFree -lole32
5325 check_func_headers windows.h GetProcessAffinityMask
5326 check_func_headers windows.h GetProcessTimes
5327 check_func_headers windows.h GetSystemTimeAsFileTime
5328 check_func_headers windows.h MapViewOfFile
5329 check_func_headers windows.h PeekNamedPipe
5330 check_func_headers windows.h SetConsoleTextAttribute
5331 check_func_headers windows.h SetConsoleCtrlHandler
5332 check_func_headers windows.h Sleep
5333 check_func_headers windows.h VirtualAlloc
5334 check_struct windows.h "CONDITION_VARIABLE" Ptr
5335 check_func_headers glob.h glob
5336 enabled xlib &&
5337     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5338
5339 check_header direct.h
5340 check_header dirent.h
5341 check_header dlfcn.h
5342 check_header d3d11.h
5343 check_header dxva.h
5344 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5345 check_header io.h
5346 check_header libcrystalhd/libcrystalhd_if.h
5347 check_header mach/mach_time.h
5348 check_header malloc.h
5349 check_header net/udplite.h
5350 check_header poll.h
5351 check_header sys/mman.h
5352 check_header sys/param.h
5353 check_header sys/resource.h
5354 check_header sys/select.h
5355 check_header sys/time.h
5356 check_header sys/un.h
5357 check_header termios.h
5358 check_header unistd.h
5359 check_header valgrind/valgrind.h
5360 check_header vdpau/vdpau.h
5361 check_header vdpau/vdpau_x11.h
5362 check_header VideoDecodeAcceleration/VDADecoder.h
5363 check_header VideoToolbox/VideoToolbox.h
5364 check_header windows.h
5365 check_header X11/extensions/XvMClib.h
5366 check_header asm/types.h
5367
5368 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5369 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5370 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5371 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5372
5373 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5374
5375 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5376 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5377 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5378 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5379 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5380
5381 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5382 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5383
5384 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5385
5386 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5387
5388 if ! disabled w32threads && ! enabled pthreads; then
5389     check_func_headers "windows.h process.h" _beginthreadex &&
5390         enable w32threads || disable w32threads
5391     if ! enabled w32threads && enabled winrt; then
5392         check_func_headers "windows.h" CreateThread &&
5393             enable w32threads || disable w32threads
5394     fi
5395 fi
5396
5397 # check for some common methods of building with pthread support
5398 # do this before the optional library checks as some of them require pthreads
5399 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5400     enable pthreads
5401     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5402         add_cflags -pthread
5403         add_extralibs -pthread
5404     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5405         add_cflags -pthreads
5406         add_extralibs -pthreads
5407     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5408         add_cflags -ldl -pthread
5409         add_extralibs -ldl -pthread
5410     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5411         add_extralibs -lpthreadGC2
5412     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5413         :
5414     elif ! check_func pthread_join && ! check_func pthread_create; then
5415         disable pthreads
5416     fi
5417     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5418 fi
5419
5420
5421 if enabled pthreads; then
5422   check_func pthread_cancel
5423 fi
5424
5425 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5426 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5427 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5428
5429 check_lib math.h sin -lm && LIBM="-lm"
5430 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5431
5432 atan2f_args=2
5433 copysign_args=2
5434 hypot_args=2
5435 ldexpf_args=2
5436 powf_args=2
5437
5438 for func in $MATH_FUNCS; do
5439     eval check_mathfunc $func \${${func}_args:-1}
5440 done
5441
5442 for func in $COMPLEX_FUNCS; do
5443     eval check_complexfunc $func \${${func}_args:-1}
5444 done
5445
5446 # these are off by default, so fail if requested and not available
5447 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5448 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5449                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5450 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5451                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5452                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5453 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5454 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5455 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5456 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5457 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5458 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5459 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5460 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5461 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5462 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5463 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5464                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5465                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5466 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5467 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5468 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5469 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5470                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5471                                  warn "using libfdk without pkg-config"; } }
5472 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5473 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5474 enabled fontconfig        && enable libfontconfig
5475 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5476 enabled libfreetype       && require_libfreetype
5477 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5478 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5479 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5480                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5481                                done || die "ERROR: libgsm not found"; }
5482 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5483 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5484 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5485 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5486 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5487 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5488 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5489 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5490 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5491                                require_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5492                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5493 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5494 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5495                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5496                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5497                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5498                                die "ERROR: libopenjpeg not found"; }
5499 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5500 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5501 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5502 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5503 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5504 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5505 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5506                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5507 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5508 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5509 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5510 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5511 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5512 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5513 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5514                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5515                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5516 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5517 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5518 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5519 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5520 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5521
5522 enabled libvpx            && {
5523     enabled libvpx_vp8_decoder && {
5524         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5525             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5526                 die "ERROR: libvpx decoder version must be >=0.9.1";
5527     }
5528     enabled libvpx_vp8_encoder && {
5529         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5530             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5531                 die "ERROR: libvpx encoder version must be >=0.9.7";
5532     }
5533     enabled libvpx_vp9_decoder && {
5534         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5535             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5536                 disable libvpx_vp9_decoder;
5537     }
5538     enabled libvpx_vp9_encoder && {
5539         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5540             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5541                 disable libvpx_vp9_encoder;
5542     }
5543     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5544         die "libvpx enabled but no supported decoders found"
5545     fi
5546 }
5547
5548 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5549 enabled libwebp           && {
5550     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5551     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5552 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5553                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5554                                  warn "using libx264 without pkg-config"; } } &&
5555                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5556                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5557                              { check_cpp_condition x264.h "X264_MPEG2" &&
5558                                enable libx262; }
5559 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5560                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5561                                die "ERROR: libx265 version must be >= 68."; }
5562 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5563 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5564 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5565 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5566 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5567                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5568                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5569 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5570                                 { ! enabled cross_compile && {
5571                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5572                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5573                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5574                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5575                                die "ERROR: mmal not found"; }
5576 enabled mmal &&
5577     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5578      die "ERROR: mmal firmware headers too old")
5579
5580 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5581 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5582                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5583                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5584                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5585 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5586                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5587                                die "ERROR: openal not found"; } &&
5588                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5589                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5590 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5591                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5592                                die "ERROR: opencl not found"; } &&
5593                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5594                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5595                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5596 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5597                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5598                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5599                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5600                                die "ERROR: opengl not found."
5601                              }
5602 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5603                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5604                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5605                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5606                                die "ERROR: openssl not found"; }
5607 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5608
5609 # libdc1394 check
5610 if enabled libdc1394; then
5611     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5612         enable libdc1394_2; } ||
5613     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5614         enable libdc1394_1; } ||
5615     die "ERROR: No version of libdc1394 found "
5616 fi
5617
5618 if enabled gcrypt; then
5619     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5620     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5621         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5622         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5623         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5624             die "ERROR: gcrypt not found"
5625         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5626     else
5627         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5628     fi
5629 fi
5630
5631 if ! disabled sdl; then
5632     SDL_CONFIG="${cross_prefix}sdl-config"
5633     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5634         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5635         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5636         enable sdl
5637     else
5638         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5639             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5640             sdl_libs=$("${SDL_CONFIG}" --libs)
5641             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5642             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5643             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5644             enable sdl
5645         elif enabled sdl ; then
5646             die "ERROR: SDL not found"
5647         else
5648             disable sdl
5649         fi
5650     fi
5651     if test $target_os = "mingw32"; then
5652         sdl_libs="$sdl_libs -mconsole"
5653     fi
5654 fi
5655 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5656
5657 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5658     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5659     enable securetransport; }
5660
5661 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5662                        enable schannel && add_extralibs -lSecur32; }
5663
5664 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5665 enabled makeinfo \
5666     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5667     && enable makeinfo_html || disable makeinfo_html
5668 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5669 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5670 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5671 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5672
5673 check_header linux/fb.h
5674 check_header linux/videodev.h
5675 check_header linux/videodev2.h
5676 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5677
5678 check_header sys/videoio.h
5679 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5680
5681 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5682 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5683 # w32api 3.12 had it defined wrong
5684 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5685
5686 check_type "dshow.h" IBaseFilter
5687
5688 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5689 { check_header dev/bktr/ioctl_meteor.h &&
5690   check_header dev/bktr/ioctl_bt848.h; } ||
5691 { check_header machine/ioctl_meteor.h &&
5692   check_header machine/ioctl_bt848.h; } ||
5693 { check_header dev/video/meteor/ioctl_meteor.h &&
5694   check_header dev/video/bktr/ioctl_bt848.h; } ||
5695 check_header dev/ic/bt8xx.h
5696
5697 check_header sndio.h
5698 if check_struct sys/soundcard.h audio_buf_info bytes; then
5699     enable_safe sys/soundcard.h
5700 else
5701     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5702     #include <sys/soundcard.h>
5703     audio_buf_info abc;
5704 EOF
5705 fi
5706 check_header soundcard.h
5707
5708 enabled_any alsa_indev alsa_outdev &&
5709     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5710
5711 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5712     check_func jack_port_get_latency_range -ljack
5713
5714 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5715
5716 if enabled libcdio; then
5717     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5718     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5719     die "ERROR: No usable libcdio/cdparanoia found"
5720 fi
5721
5722 enabled xlib &&
5723     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5724
5725 if ! disabled libxcb; then
5726     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5727         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5728     } && disable x11grab && enable libxcb
5729
5730 if enabled libxcb; then
5731     disabled libxcb_shm || {
5732         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5733             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5734         } && check_header sys/shm.h && enable libxcb_shm; }
5735
5736     disabled libxcb_xfixes || {
5737         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5738             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5739         } && enable libxcb_xfixes; }
5740
5741     disabled libxcb_shape || {
5742         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5743             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5744         } && enable libxcb_shape; }
5745
5746     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5747     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5748 fi
5749 fi
5750
5751 if enabled x11grab; then
5752     enabled xlib || die "ERROR: Xlib not found"
5753     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5754     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5755 fi
5756
5757 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5758
5759 enabled dxva2api_h &&
5760     check_cc <<EOF && enable dxva2api_cobj
5761 #define _WIN32_WINNT 0x0600
5762 #define COBJMACROS
5763 #include <windows.h>
5764 #include <d3d9.h>
5765 #include <dxva2api.h>
5766 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5767 EOF
5768
5769 enabled vaapi &&
5770     check_lib va/va.h vaInitialize -lva ||
5771     disable vaapi
5772
5773 enabled vaapi && enabled xlib &&
5774     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5775     enable vaapi_x11
5776
5777 enabled vdpau &&
5778     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5779     disable vdpau
5780
5781 enabled vdpau && enabled xlib &&
5782     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5783     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5784     enable vdpau_x11
5785
5786 # Funny iconv installations are not unusual, so check it after all flags have been set
5787 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5788
5789 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5790
5791 # add some useful compiler flags if supported
5792 check_cflags -Wdeclaration-after-statement
5793 check_cflags -Wall
5794 check_cflags -Wdisabled-optimization
5795 check_cflags -Wpointer-arith
5796 check_cflags -Wredundant-decls
5797 check_cflags -Wwrite-strings
5798 check_cflags -Wtype-limits
5799 check_cflags -Wundef
5800 check_cflags -Wmissing-prototypes
5801 check_cflags -Wno-pointer-to-int-cast
5802 check_cflags -Wstrict-prototypes
5803 check_cflags -Wempty-body
5804 enabled extra_warnings && check_cflags -Winline
5805 enabled extra_warnings && check_cflags -Wcast-qual
5806
5807 check_disable_warning(){
5808     warning_flag=-W${1#-Wno-}
5809     test_cflags $warning_flag && add_cflags $1
5810 }
5811
5812 check_disable_warning -Wno-parentheses
5813 check_disable_warning -Wno-switch
5814 check_disable_warning -Wno-format-zero-length
5815 check_disable_warning -Wno-pointer-sign
5816 check_disable_warning -Wno-unused-const-variable
5817
5818 # add some linker flags
5819 check_ldflags -Wl,--warn-common
5820 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5821 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5822 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5823 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5824
5825 # add some strip flags
5826 # -wN '..@*' is more selective than -x, but not available everywhere.
5827 check_stripflags -wN \'..@*\' || check_stripflags -x
5828
5829 enabled neon_clobber_test &&
5830     check_ldflags -Wl,--wrap,avcodec_open2              \
5831                   -Wl,--wrap,avcodec_decode_audio4      \
5832                   -Wl,--wrap,avcodec_decode_video2      \
5833                   -Wl,--wrap,avcodec_decode_subtitle2   \
5834                   -Wl,--wrap,avcodec_encode_audio2      \
5835                   -Wl,--wrap,avcodec_encode_video2      \
5836                   -Wl,--wrap,avcodec_encode_subtitle    \
5837                   -Wl,--wrap,swr_convert                \
5838                   -Wl,--wrap,avresample_convert ||
5839     disable neon_clobber_test
5840
5841 enabled xmm_clobber_test &&
5842     check_ldflags -Wl,--wrap,avcodec_open2              \
5843                   -Wl,--wrap,avcodec_decode_audio4      \
5844                   -Wl,--wrap,avcodec_decode_video2      \
5845                   -Wl,--wrap,avcodec_decode_subtitle2   \
5846                   -Wl,--wrap,avcodec_encode_audio2      \
5847                   -Wl,--wrap,avcodec_encode_video2      \
5848                   -Wl,--wrap,avcodec_encode_subtitle    \
5849                   -Wl,--wrap,swr_convert                \
5850                   -Wl,--wrap,avresample_convert         \
5851                   -Wl,--wrap,sws_scale ||
5852     disable xmm_clobber_test
5853
5854 echo "X { local: *; };" > $TMPV
5855 if test_ldflags -Wl,--version-script,$TMPV; then
5856     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5857 elif test_ldflags -Wl,-M,$TMPV; then
5858     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5859 fi
5860
5861 check_cc <<EOF && enable symver_asm_label
5862 void ff_foo(void) __asm__ ("av_foo@VERSION");
5863 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5864 EOF
5865     check_cc <<EOF && enable symver_gnu_asm
5866 __asm__(".symver ff_foo,av_foo@VERSION");
5867 void ff_foo(void) {}
5868 EOF
5869
5870 if [ -z "$optflags" ]; then
5871     if enabled small; then
5872         optflags=$cflags_size
5873     elif enabled optimizations; then
5874         optflags=$cflags_speed
5875     else
5876         optflags=$cflags_noopt
5877     fi
5878 fi
5879
5880 check_optflags(){
5881     check_cflags "$@"
5882     enabled lto && check_ldflags "$@"
5883 }
5884
5885
5886 if enabled lto; then
5887     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5888     check_cflags  -flto
5889     check_ldflags -flto $cpuflags
5890     disable inline_asm_direct_symbol_refs
5891 fi
5892
5893 check_optflags $optflags
5894 check_optflags -fno-math-errno
5895 check_optflags -fno-signed-zeros
5896
5897 enabled ftrapv && check_cflags -ftrapv
5898
5899 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5900 int x;
5901 EOF
5902
5903
5904 if enabled icc; then
5905     # Just warnings, no remarks
5906     check_cflags -w1
5907     # -wd: Disable following warnings
5908     # 144, 167, 556: -Wno-pointer-sign
5909     # 188: enumerated type mixed with another type
5910     # 1292: attribute "foo" ignored
5911     # 1419: external declaration in primary source file
5912     # 10006: ignoring unknown option -fno-signed-zeros
5913     # 10148: ignoring unknown option -Wno-parentheses
5914     # 10156: ignoring option '-W'; no argument required
5915     # 13200: No EMMS instruction before call to function
5916     # 13203: No EMMS instruction before return from function
5917     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5918     # 11030: Warning unknown option --as-needed
5919     # 10156: ignoring option '-export'; no argument required
5920     check_ldflags -wd10156,11030
5921     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5922     enable ebp_available
5923     # The test above does not test linking
5924     enabled lto && disable symver_asm_label
5925     if enabled x86_32; then
5926         icc_version=$($cc -dumpversion)
5927         test ${icc_version%%.*} -ge 11 &&
5928             check_cflags -falign-stack=maintain-16-byte ||
5929             disable aligned_stack
5930     fi
5931 elif enabled ccc; then
5932     # disable some annoying warnings
5933     add_cflags -msg_disable bitnotint
5934     add_cflags -msg_disable mixfuncvoid
5935     add_cflags -msg_disable nonstandcast
5936     add_cflags -msg_disable unsupieee
5937 elif enabled gcc; then
5938     case $gcc_basever in
5939         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
5940         4.*)                 check_optflags -fno-tree-vectorize ;;
5941         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
5942     esac
5943     check_cflags -Werror=format-security
5944     check_cflags -Werror=implicit-function-declaration
5945     check_cflags -Werror=missing-prototypes
5946     check_cflags -Werror=return-type
5947     check_cflags -Werror=vla
5948     check_cflags -Wformat
5949     check_cflags -fdiagnostics-color=auto
5950     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5951 elif enabled llvm_gcc; then
5952     check_cflags -mllvm -stack-alignment=16
5953 elif enabled clang; then
5954     check_cflags -mllvm -stack-alignment=16
5955     check_cflags -Qunused-arguments
5956     check_cflags -Werror=implicit-function-declaration
5957     check_cflags -Werror=missing-prototypes
5958     check_cflags -Werror=return-type
5959 elif enabled cparser; then
5960     add_cflags -Wno-missing-variable-declarations
5961     add_cflags -Wno-empty-statement
5962 elif enabled armcc; then
5963     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5964     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5965     # 2523: use of inline assembly is deprecated
5966     add_cflags -W${armcc_opt},--diag_suppress=2523
5967     add_cflags -W${armcc_opt},--diag_suppress=1207
5968     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5969     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5970     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5971     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5972 elif enabled tms470; then
5973     add_cflags -pds=824 -pds=837
5974     disable inline_asm
5975 elif enabled pathscale; then
5976     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5977 elif enabled_any msvc icl; then
5978     enabled x86_32 && disable aligned_stack
5979     enabled_all x86_32 debug && add_cflags -Oy-
5980     enabled debug && add_ldflags -debug
5981     enable pragma_deprecated
5982     if enabled icl; then
5983         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5984         # (correctly) on icl 13.x.
5985         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5986             add_cflags -Qansi-alias
5987         # Some inline asm is not compilable in debug
5988         if enabled debug; then
5989             disable ebp_available
5990             disable ebx_available
5991         fi
5992     fi
5993     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5994     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5995     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5996     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5997     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5998     # MSVC 2013 and newer can handle it fine.
5999     # If this declspec fails, force including stdlib.h before the restrict redefinition
6000     # happens in config.h.
6001     if [ $_restrict != restrict ]; then
6002         check_cc <<EOF || add_cflags -FIstdlib.h
6003 __declspec($_restrict) void* foo(int);
6004 EOF
6005     fi
6006     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6007 fi
6008
6009 for pfx in "" host_; do
6010     varname=${pfx%_}cc_type
6011     eval "type=\$$varname"
6012     if [ $type = "msvc" ]; then
6013         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6014 static inline int foo(int a) { return a; }
6015 EOF
6016     fi
6017 done
6018
6019 case $as_type in
6020     clang)
6021         add_asflags -Qunused-arguments
6022     ;;
6023 esac
6024
6025 case $ld_type in
6026     clang)
6027         check_ldflags -Qunused-arguments
6028     ;;
6029 esac
6030
6031 case $target_os in
6032     osf1)
6033         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6034     ;;
6035     plan9)
6036         add_cppflags -Dmain=plan9_main
6037     ;;
6038 esac
6039
6040 enable frame_thread_encoder
6041
6042 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6043
6044 check_deps $CONFIG_LIST       \
6045            $CONFIG_EXTRA      \
6046            $HAVE_LIST         \
6047            $ALL_COMPONENTS    \
6048
6049 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6050
6051
6052 if test $target_os = "haiku"; then
6053     disable memalign
6054     disable posix_memalign
6055 fi
6056
6057 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6058     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6059     enable dxva2_lib
6060
6061 ! enabled_any memalign posix_memalign aligned_malloc &&
6062     enabled simd_align_16 && enable memalign_hack
6063
6064 # add_dep lib dep
6065 # -> enable ${lib}_deps_${dep}
6066 # -> add $dep to ${lib}_deps only once
6067 add_dep() {
6068     lib=$1
6069     dep=$2
6070     enabled "${lib}_deps_${dep}" && return 0
6071     enable  "${lib}_deps_${dep}"
6072     prepend "${lib}_deps" $dep
6073 }
6074
6075 # merge deps lib components
6076 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6077 merge_deps() {
6078     lib=$1
6079     shift
6080     for comp in $*; do
6081         enabled $comp || continue
6082         eval "dep=\"\$${comp}_deps\""
6083         for d in $dep; do
6084             add_dep $lib $d
6085         done
6086     done
6087 }
6088
6089 merge_deps libavfilter $FILTER_LIST
6090
6091 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6092
6093 for thread in $THREADS_LIST; do
6094     if enabled $thread; then
6095         test -n "$thread_type" &&
6096             die "ERROR: Only one thread type must be selected." ||
6097             thread_type="$thread"
6098     fi
6099 done
6100
6101 enabled zlib && add_cppflags -DZLIB_CONST
6102
6103 # conditional library dependencies, in linking order
6104 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6105 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6106 enabled aresample_filter    && prepend avfilter_deps "swresample"
6107 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6108 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6109 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6110 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6111 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6112 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6113 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6114 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6115 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6116 enabled pan_filter          && prepend avfilter_deps "swresample"
6117 enabled pp_filter           && prepend avfilter_deps "postproc"
6118 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6119 enabled resample_filter && prepend avfilter_deps "avresample"
6120 enabled sab_filter          && prepend avfilter_deps "swscale"
6121 enabled scale_filter    && prepend avfilter_deps "swscale"
6122 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6123 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6124 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6125 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6126 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6127 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6128 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6129 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6130 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6131
6132 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6133
6134 enabled opus_decoder    && prepend avcodec_deps "swresample"
6135
6136 expand_deps(){
6137     lib_deps=${1}_deps
6138     eval "deps=\$$lib_deps"
6139     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6140     unique $lib_deps
6141 }
6142
6143 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6144 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6145
6146 map 'expand_deps $v' $LIBRARY_LIST
6147
6148 echo "install prefix            $prefix"
6149 echo "source path               $source_path"
6150 echo "C compiler                $cc"
6151 echo "C library                 $libc_type"
6152 if test "$host_cc" != "$cc"; then
6153     echo "host C compiler           $host_cc"
6154     echo "host C library            $host_libc_type"
6155 fi
6156 echo "ARCH                      $arch ($cpu)"
6157 if test "$build_suffix" != ""; then
6158     echo "build suffix              $build_suffix"
6159 fi
6160 if test "$progs_suffix" != ""; then
6161     echo "progs suffix              $progs_suffix"
6162 fi
6163 if test "$extra_version" != ""; then
6164     echo "version string suffix     $extra_version"
6165 fi
6166 echo "big-endian                ${bigendian-no}"
6167 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6168 if enabled x86; then
6169     echo "${yasmexe}                      ${yasm-no}"
6170     echo "MMX enabled               ${mmx-no}"
6171     echo "MMXEXT enabled            ${mmxext-no}"
6172     echo "3DNow! enabled            ${amd3dnow-no}"
6173     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6174     echo "SSE enabled               ${sse-no}"
6175     echo "SSSE3 enabled             ${ssse3-no}"
6176     echo "AESNI enabled             ${aesni-no}"
6177     echo "AVX enabled               ${avx-no}"
6178     echo "XOP enabled               ${xop-no}"
6179     echo "FMA3 enabled              ${fma3-no}"
6180     echo "FMA4 enabled              ${fma4-no}"
6181     echo "i686 features enabled     ${i686-no}"
6182     echo "CMOV is fast              ${fast_cmov-no}"
6183     echo "EBX available             ${ebx_available-no}"
6184     echo "EBP available             ${ebp_available-no}"
6185 fi
6186 if enabled aarch64; then
6187     echo "NEON enabled              ${neon-no}"
6188     echo "VFP enabled               ${vfp-no}"
6189 fi
6190 if enabled arm; then
6191     echo "ARMv5TE enabled           ${armv5te-no}"
6192     echo "ARMv6 enabled             ${armv6-no}"
6193     echo "ARMv6T2 enabled           ${armv6t2-no}"
6194     echo "VFP enabled               ${vfp-no}"
6195     echo "NEON enabled              ${neon-no}"
6196     echo "THUMB enabled             ${thumb-no}"
6197 fi
6198 if enabled mips; then
6199     echo "MIPS FPU enabled          ${mipsfpu-no}"
6200     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6201     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6202     echo "MIPS MSA enabled          ${msa-no}"
6203     echo "LOONGSON MMI enabled      ${mmi-no}"
6204 fi
6205 if enabled ppc; then
6206     echo "AltiVec enabled           ${altivec-no}"
6207     echo "VSX enabled               ${vsx-no}"
6208     echo "POWER8 enabled            ${power8-no}"
6209     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6210     echo "dcbzl available           ${dcbzl-no}"
6211 fi
6212 echo "debug symbols             ${debug-no}"
6213 echo "strip symbols             ${stripping-no}"
6214 echo "optimize for size         ${small-no}"
6215 echo "optimizations             ${optimizations-no}"
6216 echo "static                    ${static-no}"
6217 echo "shared                    ${shared-no}"
6218 echo "postprocessing support    ${postproc-no}"
6219 echo "new filter support        ${avfilter-no}"
6220 echo "network support           ${network-no}"
6221 echo "threading support         ${thread_type-no}"
6222 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6223 echo "SDL support               ${sdl-no}"
6224 echo "opencl enabled            ${opencl-no}"
6225 echo "texi2html enabled         ${texi2html-no}"
6226 echo "perl enabled              ${perl-no}"
6227 echo "pod2man enabled           ${pod2man-no}"
6228 echo "makeinfo enabled          ${makeinfo-no}"
6229 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6230 test -n "$random_seed" &&
6231     echo "random seed               ${random_seed}"
6232 echo
6233
6234 echo "Enabled programs:"
6235 print_enabled '' $PROGRAM_LIST | print_in_columns
6236 echo
6237
6238 echo "External libraries:"
6239 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6240 echo
6241
6242 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6243     echo "Enabled ${type}s:"
6244     eval list=\$$(toupper $type)_LIST
6245     print_enabled '_*' $list | print_in_columns
6246     echo
6247 done
6248
6249 license="LGPL version 2.1 or later"
6250 if enabled nonfree; then
6251     license="nonfree and unredistributable"
6252 elif enabled gplv3; then
6253     license="GPL version 3 or later"
6254 elif enabled lgplv3; then
6255     license="LGPL version 3 or later"
6256 elif enabled gpl; then
6257     license="GPL version 2 or later"
6258 fi
6259
6260 echo "License: $license"
6261
6262 echo "Creating config.mak, config.h, and doc/config.texi..."
6263
6264 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6265
6266 enabled stripping || strip="echo skipping strip"
6267
6268 config_files="$TMPH config.mak doc/config.texi"
6269
6270 cat > config.mak <<EOF
6271 # Automatically generated by configure - do not modify!
6272 ifndef FFMPEG_CONFIG_MAK
6273 FFMPEG_CONFIG_MAK=1
6274 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6275 prefix=$prefix
6276 LIBDIR=\$(DESTDIR)$libdir
6277 SHLIBDIR=\$(DESTDIR)$shlibdir
6278 INCDIR=\$(DESTDIR)$incdir
6279 BINDIR=\$(DESTDIR)$bindir
6280 DATADIR=\$(DESTDIR)$datadir
6281 DOCDIR=\$(DESTDIR)$docdir
6282 MANDIR=\$(DESTDIR)$mandir
6283 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6284 SRC_PATH=$source_path
6285 SRC_LINK=$source_link
6286 ifndef MAIN_MAKEFILE
6287 SRC_PATH:=\$(SRC_PATH:.%=..%)
6288 endif
6289 CC_IDENT=$cc_ident
6290 ARCH=$arch
6291 INTRINSICS=$intrinsics
6292 CC=$cc
6293 CXX=$cxx
6294 AS=$as
6295 OBJCC=$objcc
6296 LD=$ld
6297 DEPCC=$dep_cc
6298 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6299 DEPAS=$as
6300 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6301 YASM=$yasmexe
6302 DEPYASM=$yasmexe
6303 AR=$ar
6304 ARFLAGS=$arflags
6305 AR_O=$ar_o
6306 RANLIB=$ranlib
6307 STRIP=$strip
6308 CP=cp -p
6309 LN_S=$ln_s
6310 CPPFLAGS=$CPPFLAGS
6311 CFLAGS=$CFLAGS
6312 CXXFLAGS=$CXXFLAGS
6313 OBJCFLAGS=$OBJCFLAGS
6314 ASFLAGS=$ASFLAGS
6315 AS_C=$AS_C
6316 AS_O=$AS_O
6317 OBJCC_C=$OBJCC_C
6318 OBJCC_E=$OBJCC_E
6319 OBJCC_O=$OBJCC_O
6320 CC_C=$CC_C
6321 CC_E=$CC_E
6322 CC_O=$CC_O
6323 CXX_C=$CXX_C
6324 CXX_O=$CXX_O
6325 LD_O=$LD_O
6326 LD_LIB=$LD_LIB
6327 LD_PATH=$LD_PATH
6328 DLLTOOL=$dlltool
6329 WINDRES=$windres
6330 DEPWINDRES=$dep_cc
6331 DOXYGEN=$doxygen
6332 LDFLAGS=$LDFLAGS
6333 LDEXEFLAGS=$LDEXEFLAGS
6334 LDLIBFLAGS=$LDLIBFLAGS
6335 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6336 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6337 YASMFLAGS=$YASMFLAGS
6338 BUILDSUF=$build_suffix
6339 PROGSSUF=$progs_suffix
6340 FULLNAME=$FULLNAME
6341 LIBPREF=$LIBPREF
6342 LIBSUF=$LIBSUF
6343 LIBNAME=$LIBNAME
6344 SLIBPREF=$SLIBPREF
6345 SLIBSUF=$SLIBSUF
6346 EXESUF=$EXESUF
6347 EXTRA_VERSION=$extra_version
6348 CCDEP=$CCDEP
6349 CXXDEP=$CXXDEP
6350 CCDEP_FLAGS=$CCDEP_FLAGS
6351 ASDEP=$ASDEP
6352 ASDEP_FLAGS=$ASDEP_FLAGS
6353 CC_DEPFLAGS=$CC_DEPFLAGS
6354 AS_DEPFLAGS=$AS_DEPFLAGS
6355 HOSTCC=$host_cc
6356 HOSTLD=$host_ld
6357 HOSTCFLAGS=$host_cflags
6358 HOSTCPPFLAGS=$host_cppflags
6359 HOSTEXESUF=$HOSTEXESUF
6360 HOSTLDFLAGS=$host_ldflags
6361 HOSTLIBS=$host_libs
6362 DEPHOSTCC=$host_cc
6363 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6364 HOSTCCDEP=$HOSTCCDEP
6365 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6366 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6367 HOSTCC_C=$HOSTCC_C
6368 HOSTCC_O=$HOSTCC_O
6369 HOSTLD_O=$HOSTLD_O
6370 TARGET_EXEC=$target_exec $target_exec_args
6371 TARGET_PATH=$target_path
6372 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6373 CFLAGS-ffplay=$sdl_cflags
6374 ZLIB=$($ldflags_filter -lz)
6375 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6376 EXTRALIBS=$extralibs
6377 COMPAT_OBJS=$compat_objs
6378 EXEOBJS=$exeobjs
6379 INSTALL=$install
6380 LIBTARGET=${LIBTARGET}
6381 SLIBNAME=${SLIBNAME}
6382 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6383 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6384 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6385 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6386 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6387 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6388 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6389 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6390 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6391 NOREDZONE_FLAGS=$noredzone_flags
6392 EOF
6393
6394 get_version(){
6395     lcname=lib${1}
6396     name=$(toupper $lcname)
6397     file=$source_path/$lcname/version.h
6398     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6399     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6400     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6401     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6402     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6403     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6404 }
6405
6406 map 'get_version $v' $LIBRARY_LIST
6407
6408 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6409
6410 print_program_libs(){
6411     eval "program_libs=\$${1}_libs"
6412     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6413 }
6414
6415 map 'print_program_libs $v' $PROGRAM_LIST
6416
6417 cat > $TMPH <<EOF
6418 /* Automatically generated by configure - do not modify! */
6419 #ifndef FFMPEG_CONFIG_H
6420 #define FFMPEG_CONFIG_H
6421 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6422 #define FFMPEG_LICENSE "$(c_escape $license)"
6423 #define CONFIG_THIS_YEAR 2016
6424 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6425 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6426 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6427 #define av_restrict $_restrict
6428 #define EXTERN_PREFIX "${extern_prefix}"
6429 #define EXTERN_ASM ${extern_prefix}
6430 #define BUILDSUF "$build_suffix"
6431 #define SLIBSUF "$SLIBSUF"
6432 #define HAVE_MMX2 HAVE_MMXEXT
6433 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6434 EOF
6435
6436 test -n "$assert_level" &&
6437     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6438
6439 test -n "$malloc_prefix" &&
6440     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6441
6442 if enabled yasm; then
6443     append config_files $TMPASM
6444     printf '' >$TMPASM
6445 fi
6446
6447 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6448
6449
6450 mkdir -p doc
6451 mkdir -p tests
6452 mkdir -p tests/api
6453 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6454
6455 print_config ARCH_   "$config_files" $ARCH_LIST
6456 print_config HAVE_   "$config_files" $HAVE_LIST
6457 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6458                                      $CONFIG_EXTRA      \
6459                                      $ALL_COMPONENTS    \
6460
6461 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6462 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6463
6464 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6465 cp_if_changed $TMPH config.h
6466 touch .config
6467
6468 enabled yasm && cp_if_changed $TMPASM config.asm
6469
6470 cat > $TMPH <<EOF
6471 /* Generated by ffconf */
6472 #ifndef AVUTIL_AVCONFIG_H
6473 #define AVUTIL_AVCONFIG_H
6474 EOF
6475
6476 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6477
6478 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6479
6480 cp_if_changed $TMPH libavutil/avconfig.h
6481
6482 if test -n "$WARNINGS"; then
6483     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6484     enabled fatal_warnings && exit 1
6485 fi
6486
6487 # build pkg-config files
6488
6489 lib_version(){
6490     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6491 }
6492
6493 pkgconfig_generate(){
6494     name=$1
6495     shortname=${name#lib}${build_suffix}
6496     comment=$2
6497     version=$3
6498     libs=$4
6499     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6500     requires=${requires%, }
6501     enabled ${name#lib} || return 0
6502     mkdir -p $name
6503     cat <<EOF > $name/$name${build_suffix}.pc
6504 prefix=$prefix
6505 exec_prefix=\${prefix}
6506 libdir=$libdir
6507 includedir=$incdir
6508
6509 Name: $name
6510 Description: $comment
6511 Version: $version
6512 Requires: $(enabled shared || echo $requires)
6513 Requires.private: $(enabled shared && echo $requires)
6514 Conflicts:
6515 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6516 Libs.private: $(enabled shared && echo $libs)
6517 Cflags: -I\${includedir}
6518 EOF
6519
6520 mkdir -p doc/examples/pc-uninstalled
6521 includedir=${source_path}
6522 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6523     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6524 prefix=
6525 exec_prefix=
6526 libdir=\${pcfiledir}/../../../$name
6527 includedir=${includedir}
6528
6529 Name: $name
6530 Description: $comment
6531 Version: $version
6532 Requires: $requires
6533 Conflicts:
6534 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6535 Cflags: -I\${includedir}
6536 EOF
6537 }
6538
6539 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6540 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6541 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6542 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6543 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6544 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6545 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6546 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6547 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"