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"
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 webm_dash_manifest_demuxer_select="matroska_demuxer"
2735 wtv_demuxer_select="riffdec"
2736 wtv_muxer_select="riffenc"
2737 xmv_demuxer_select="riffdec"
2738 xwma_demuxer_select="riffdec"
2739
2740 # indevs / outdevs
2741 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2742 alsa_outdev_deps="alsa_asoundlib_h"
2743 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2744 avfoundation_indev_select="avfoundation"
2745 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2746 caca_outdev_deps="libcaca"
2747 decklink_indev_deps="decklink pthreads"
2748 decklink_indev_extralibs="-lstdc++"
2749 decklink_outdev_deps="decklink pthreads"
2750 decklink_outdev_extralibs="-lstdc++"
2751 dshow_indev_deps="IBaseFilter"
2752 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2753 dv1394_indev_deps="dv1394"
2754 dv1394_indev_select="dv_demuxer"
2755 fbdev_indev_deps="linux_fb_h"
2756 fbdev_outdev_deps="linux_fb_h"
2757 gdigrab_indev_deps="CreateDIBSection"
2758 gdigrab_indev_extralibs="-lgdi32"
2759 gdigrab_indev_select="bmp_decoder"
2760 iec61883_indev_deps="libiec61883"
2761 jack_indev_deps="jack_jack_h sem_timedwait"
2762 lavfi_indev_deps="avfilter"
2763 libcdio_indev_deps="libcdio"
2764 libdc1394_indev_deps="libdc1394"
2765 libv4l2_indev_deps="libv4l2"
2766 openal_indev_deps="openal"
2767 opengl_outdev_deps="opengl"
2768 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2769 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2770 pulse_indev_deps="libpulse"
2771 pulse_outdev_deps="libpulse"
2772 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2773 qtkit_indev_select="qtkit"
2774 sdl_outdev_deps="sdl"
2775 sndio_indev_deps="sndio_h"
2776 sndio_outdev_deps="sndio_h"
2777 v4l_indev_deps="linux_videodev_h"
2778 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2779 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2780 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2781 vfwcap_indev_extralibs="-lavicap32"
2782 x11grab_indev_deps="x11grab"
2783 x11grab_xcb_indev_deps="libxcb"
2784 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2785 xv_outdev_extralibs="-lXv -lX11 -lXext"
2786
2787 # protocols
2788 async_protocol_deps="threads"
2789 bluray_protocol_deps="libbluray"
2790 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2791 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2792 ffrtmpcrypt_protocol_select="tcp_protocol"
2793 ffrtmphttp_protocol_deps="!librtmp_protocol"
2794 ffrtmphttp_protocol_select="http_protocol"
2795 ftp_protocol_select="tcp_protocol"
2796 gopher_protocol_select="network"
2797 http_protocol_select="tcp_protocol"
2798 httpproxy_protocol_select="tcp_protocol"
2799 https_protocol_select="tls_protocol"
2800 icecast_protocol_select="http_protocol"
2801 librtmp_protocol_deps="librtmp"
2802 librtmpe_protocol_deps="librtmp"
2803 librtmps_protocol_deps="librtmp"
2804 librtmpt_protocol_deps="librtmp"
2805 librtmpte_protocol_deps="librtmp"
2806 libsmbclient_protocol_deps="libsmbclient gplv3"
2807 libssh_protocol_deps="libssh"
2808 mmsh_protocol_select="http_protocol"
2809 mmst_protocol_select="network"
2810 rtmp_protocol_deps="!librtmp_protocol"
2811 rtmp_protocol_select="tcp_protocol"
2812 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2813 rtmps_protocol_deps="!librtmp_protocol"
2814 rtmps_protocol_select="tls_protocol"
2815 rtmpt_protocol_select="ffrtmphttp_protocol"
2816 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2817 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2818 rtp_protocol_select="udp_protocol"
2819 sctp_protocol_deps="struct_sctp_event_subscribe"
2820 sctp_protocol_select="network"
2821 srtp_protocol_select="rtp_protocol"
2822 tcp_protocol_select="network"
2823 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2824 tls_gnutls_protocol_select="tcp_protocol"
2825 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2826 tls_openssl_protocol_select="tcp_protocol"
2827 tls_schannel_protocol_deps="schannel"
2828 tls_schannel_protocol_select="tcp_protocol"
2829 tls_securetransport_protocol_deps="securetransport"
2830 tls_securetransport_protocol_select="tcp_protocol"
2831 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2832 udp_protocol_select="network"
2833 udplite_protocol_select="network"
2834 unix_protocol_deps="sys_un_h"
2835 unix_protocol_select="network"
2836
2837 # filters
2838 afftfilt_filter_deps="avcodec"
2839 afftfilt_filter_select="fft"
2840 amovie_filter_deps="avcodec avformat"
2841 aresample_filter_deps="swresample"
2842 ass_filter_deps="libass"
2843 asyncts_filter_deps="avresample"
2844 atempo_filter_deps="avcodec"
2845 atempo_filter_select="rdft"
2846 azmq_filter_deps="libzmq"
2847 blackframe_filter_deps="gpl"
2848 boxblur_filter_deps="gpl"
2849 bs2b_filter_deps="libbs2b"
2850 colormatrix_filter_deps="gpl"
2851 cover_rect_filter_deps="avcodec avformat gpl"
2852 cropdetect_filter_deps="gpl"
2853 delogo_filter_deps="gpl"
2854 deshake_filter_select="pixelutils"
2855 drawtext_filter_deps="libfreetype"
2856 ebur128_filter_deps="gpl"
2857 eq_filter_deps="gpl"
2858 fftfilt_filter_deps="avcodec"
2859 fftfilt_filter_select="rdft"
2860 find_rect_filter_deps="avcodec avformat gpl"
2861 flite_filter_deps="libflite"
2862 frei0r_filter_deps="frei0r dlopen"
2863 frei0r_src_filter_deps="frei0r dlopen"
2864 fspp_filter_deps="gpl"
2865 geq_filter_deps="gpl"
2866 histeq_filter_deps="gpl"
2867 hqdn3d_filter_deps="gpl"
2868 interlace_filter_deps="gpl"
2869 kerndeint_filter_deps="gpl"
2870 ladspa_filter_deps="ladspa dlopen"
2871 mcdeint_filter_deps="avcodec gpl"
2872 movie_filter_deps="avcodec avformat"
2873 mpdecimate_filter_deps="gpl"
2874 mpdecimate_filter_select="pixelutils"
2875 mptestsrc_filter_deps="gpl"
2876 negate_filter_deps="lut_filter"
2877 nnedi_filter_deps="gpl"
2878 ocr_filter_deps="libtesseract"
2879 ocv_filter_deps="libopencv"
2880 owdenoise_filter_deps="gpl"
2881 pan_filter_deps="swresample"
2882 perspective_filter_deps="gpl"
2883 phase_filter_deps="gpl"
2884 pp7_filter_deps="gpl"
2885 pp_filter_deps="gpl postproc"
2886 pullup_filter_deps="gpl"
2887 removelogo_filter_deps="avcodec avformat swscale"
2888 repeatfields_filter_deps="gpl"
2889 resample_filter_deps="avresample"
2890 rubberband_filter_deps="librubberband"
2891 sab_filter_deps="gpl swscale"
2892 scale2ref_filter_deps="swscale"
2893 scale_filter_deps="swscale"
2894 select_filter_select="pixelutils"
2895 showcqt_filter_deps="avcodec avformat swscale"
2896 showcqt_filter_select="fft"
2897 showfreqs_filter_deps="avcodec"
2898 showfreqs_filter_select="fft"
2899 showspectrum_filter_deps="avcodec"
2900 showspectrum_filter_select="fft"
2901 showspectrumpic_filter_deps="avcodec"
2902 showspectrumpic_filter_select="fft"
2903 smartblur_filter_deps="gpl swscale"
2904 sofalizer_filter_deps="netcdf avcodec"
2905 sofalizer_filter_select="fft"
2906 spectrumsynth_filter_deps="avcodec"
2907 spectrumsynth_filter_select="fft"
2908 spp_filter_deps="gpl avcodec"
2909 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2910 stereo3d_filter_deps="gpl"
2911 subtitles_filter_deps="avformat avcodec libass"
2912 super2xsai_filter_deps="gpl"
2913 pixfmts_super2xsai_test_deps="super2xsai_filter"
2914 tinterlace_filter_deps="gpl"
2915 tinterlace_merge_test_deps="tinterlace_filter"
2916 tinterlace_pad_test_deps="tinterlace_filter"
2917 uspp_filter_deps="gpl avcodec"
2918 vidstabdetect_filter_deps="libvidstab"
2919 vidstabtransform_filter_deps="libvidstab"
2920 zmq_filter_deps="libzmq"
2921 zoompan_filter_deps="swscale"
2922 zscale_filter_deps="libzimg"
2923
2924 # examples
2925 avcodec_example_deps="avcodec avutil"
2926 avio_dir_cmd="avformat avutil"
2927 avio_reading="avformat avcodec avutil"
2928 decoding_encoding_example_deps="avcodec avformat avutil"
2929 demuxing_decoding_example_deps="avcodec avformat avutil"
2930 extract_mvs_example_deps="avcodec avformat avutil"
2931 filter_audio_example_deps="avfilter avutil"
2932 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2933 filtering_video_example_deps="avfilter avcodec avformat avutil"
2934 metadata_example_deps="avformat avutil"
2935 muxing_example_deps="avcodec avformat avutil swscale"
2936 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2937 remuxing_example_deps="avcodec avformat avutil"
2938 resampling_audio_example_deps="avutil swresample"
2939 scaling_video_example_deps="avutil swscale"
2940 transcode_aac_example_deps="avcodec avformat swresample"
2941 transcoding_example_deps="avfilter avcodec avformat avutil"
2942
2943 # libraries, in linking order
2944 avcodec_deps="avutil"
2945 avdevice_deps="avformat avcodec avutil"
2946 avfilter_deps="avutil"
2947 avformat_deps="avcodec avutil"
2948 avresample_deps="avutil"
2949 postproc_deps="avutil gpl"
2950 swresample_deps="avutil"
2951 swscale_deps="avutil"
2952
2953 # programs
2954 ffmpeg_deps="avcodec avfilter avformat swresample"
2955 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2956                null_filter
2957                setpts_filter trim_filter"
2958 ffplay_deps="avcodec avformat swscale swresample sdl"
2959 ffplay_libs='$sdl_libs'
2960 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2961 ffprobe_deps="avcodec avformat"
2962 ffserver_deps="avformat fork sarestart"
2963 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2964
2965 # documentation
2966 podpages_deps="perl"
2967 manpages_deps="perl pod2man"
2968 htmlpages_deps="perl"
2969 htmlpages_deps_any="makeinfo_html texi2html"
2970 txtpages_deps="perl makeinfo"
2971 doc_deps_any="manpages htmlpages podpages txtpages"
2972
2973 # default parameters
2974
2975 logfile="config.log"
2976
2977 # installation paths
2978 prefix_default="/usr/local"
2979 bindir_default='${prefix}/bin'
2980 datadir_default='${prefix}/share/ffmpeg'
2981 docdir_default='${prefix}/share/doc/ffmpeg'
2982 incdir_default='${prefix}/include'
2983 libdir_default='${prefix}/lib'
2984 mandir_default='${prefix}/share/man'
2985
2986 # toolchain
2987 ar_default="ar"
2988 cc_default="gcc"
2989 cxx_default="g++"
2990 host_cc_default="gcc"
2991 cp_f="cp -f"
2992 doxygen_default="doxygen"
2993 install="install"
2994 ln_s="ln -s -f"
2995 nm_default="nm -g"
2996 objformat="elf"
2997 pkg_config_default=pkg-config
2998 ranlib_default="ranlib"
2999 strip_default="strip"
3000 yasmexe_default="yasm"
3001 windres_default="windres"
3002
3003 # OS
3004 target_os_default=$(tolower $(uname -s))
3005 host_os=$target_os_default
3006
3007 # machine
3008 if test "$target_os_default" = aix; then
3009     arch_default=$(uname -p)
3010     strip_default="strip -X32_64"
3011 else
3012     arch_default=$(uname -m)
3013 fi
3014 cpu="generic"
3015 intrinsics="none"
3016
3017 # configurable options
3018 enable $PROGRAM_LIST
3019 enable $DOCUMENT_LIST
3020 enable $EXAMPLE_LIST
3021 enable $(filter_out avresample $LIBRARY_LIST)
3022 enable stripping
3023
3024 enable asm
3025 enable debug
3026 enable doc
3027 enable faan faandct faanidct
3028 enable optimizations
3029 enable runtime_cpudetect
3030 enable safe_bitstream_reader
3031 enable static
3032 enable swscale_alpha
3033 enable valgrind_backtrace
3034
3035 sws_max_filter_size_default=256
3036 set_default sws_max_filter_size
3037
3038 # Enable hwaccels by default.
3039 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3040 enable xlib
3041
3042 # build settings
3043 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3044 LIBPREF="lib"
3045 LIBSUF=".a"
3046 FULLNAME='$(NAME)$(BUILDSUF)'
3047 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3048 SLIBPREF="lib"
3049 SLIBSUF=".so"
3050 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3051 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3052 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3053 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3054 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3055 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3056
3057 asflags_filter=echo
3058 cflags_filter=echo
3059 ldflags_filter=echo
3060
3061 AS_C='-c'
3062 AS_O='-o $@'
3063 CC_C='-c'
3064 CC_E='-E -o $@'
3065 CC_O='-o $@'
3066 CXX_C='-c'
3067 CXX_O='-o $@'
3068 OBJCC_C='-c'
3069 OBJCC_E='-E -o $@'
3070 OBJCC_O='-o $@'
3071 LD_O='-o $@'
3072 LD_LIB='-l%'
3073 LD_PATH='-L'
3074 HOSTCC_C='-c'
3075 HOSTCC_E='-E -o $@'
3076 HOSTCC_O='-o $@'
3077 HOSTLD_O='-o $@'
3078
3079 host_libs='-lm'
3080 host_cflags_filter=echo
3081 host_ldflags_filter=echo
3082
3083 target_path='$(CURDIR)'
3084
3085 # since the object filename is not given with the -MM flag, the compiler
3086 # is only able to print the basename, and we must add the path ourselves
3087 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3088 DEPFLAGS='-MM'
3089
3090 # find source path
3091 if test -f configure; then
3092     source_path=.
3093 else
3094     source_path=$(cd $(dirname "$0"); pwd)
3095     case "$source_path" in
3096         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3097     esac
3098     test -e "$source_path/config.h" &&
3099         die "Out of tree builds are impossible with config.h in source dir."
3100 fi
3101
3102 for v in "$@"; do
3103     r=${v#*=}
3104     l=${v%"$r"}
3105     r=$(sh_quote "$r")
3106     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3107 done
3108
3109 find_things(){
3110     thing=$1
3111     pattern=$2
3112     file=$source_path/$3
3113     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3114 }
3115
3116 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3117 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3118 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3119 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3120 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3121 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3122 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3123 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3124 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3125 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3126 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3127
3128 ALL_COMPONENTS="
3129     $BSF_LIST
3130     $DECODER_LIST
3131     $DEMUXER_LIST
3132     $ENCODER_LIST
3133     $FILTER_LIST
3134     $HWACCEL_LIST
3135     $INDEV_LIST
3136     $MUXER_LIST
3137     $OUTDEV_LIST
3138     $PARSER_LIST
3139     $PROTOCOL_LIST
3140 "
3141
3142 for n in $COMPONENT_LIST; do
3143     v=$(toupper ${n%s})_LIST
3144     eval enable \$$v
3145     eval ${n}_if_any="\$$v"
3146 done
3147
3148 enable $ARCH_EXT_LIST
3149
3150 die_unknown(){
3151     echo "Unknown option \"$1\"."
3152     echo "See $0 --help for available options."
3153     exit 1
3154 }
3155
3156 print_in_columns() {
3157     cols=$(expr $ncols / 24)
3158     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3159 }
3160
3161 show_list() {
3162     suffix=_$1
3163     shift
3164     echo $* | sed s/$suffix//g | print_in_columns
3165     exit 0
3166 }
3167
3168 rand_list(){
3169     IFS=', '
3170     set -- $*
3171     unset IFS
3172     for thing; do
3173         comp=${thing%:*}
3174         prob=${thing#$comp}
3175         prob=${prob#:}
3176         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3177         echo "prob ${prob:-0.5}"
3178         printf '%s\n' $comp
3179     done
3180 }
3181
3182 do_random(){
3183     action=$1
3184     shift
3185     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3186     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3187 }
3188
3189 for opt do
3190     optval="${opt#*=}"
3191     case "$opt" in
3192         --extra-ldflags=*)
3193             add_ldflags $optval
3194         ;;
3195         --extra-ldexeflags=*)
3196             add_ldexeflags $optval
3197         ;;
3198         --extra-ldlibflags=*)
3199             add_ldlibflags $optval
3200         ;;
3201         --extra-libs=*)
3202             add_extralibs $optval
3203         ;;
3204         --disable-devices)
3205             disable $INDEV_LIST $OUTDEV_LIST
3206         ;;
3207         --enable-debug=*)
3208             debuglevel="$optval"
3209         ;;
3210         --disable-programs)
3211             disable $PROGRAM_LIST
3212         ;;
3213         --disable-everything)
3214             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3215         ;;
3216         --disable-all)
3217             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3218             disable $LIBRARY_LIST $PROGRAM_LIST doc
3219             enable avutil
3220         ;;
3221         --enable-random|--disable-random)
3222             action=${opt%%-random}
3223             do_random ${action#--} $COMPONENT_LIST
3224         ;;
3225         --enable-random=*|--disable-random=*)
3226             action=${opt%%-random=*}
3227             do_random ${action#--} $optval
3228         ;;
3229         --enable-*=*|--disable-*=*)
3230             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3231             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3232             eval list=\$$(toupper $thing)_LIST
3233             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3234             list=$(filter "$name" $list)
3235             [ "$list" = "" ] && warn "Option $opt did not match anything"
3236             $action $list
3237         ;;
3238         --enable-?*|--disable-?*)
3239             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3240             if is_in $option $COMPONENT_LIST; then
3241                 test $action = disable && action=unset
3242                 eval $action \$$(toupper ${option%s})_LIST
3243             elif is_in $option $CMDLINE_SELECT; then
3244                 $action $option
3245             else
3246                 die_unknown $opt
3247             fi
3248         ;;
3249         --list-*)
3250             NAME="${opt#--list-}"
3251             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3252             NAME=${NAME%s}
3253             eval show_list $NAME \$$(toupper $NAME)_LIST
3254         ;;
3255         --help|-h) show_help
3256         ;;
3257         --fatal-warnings) enable fatal_warnings
3258         ;;
3259         *)
3260             optname="${opt%%=*}"
3261             optname="${optname#--}"
3262             optname=$(echo "$optname" | sed 's/-/_/g')
3263             if is_in $optname $CMDLINE_SET; then
3264                 eval $optname='$optval'
3265             elif is_in $optname $CMDLINE_APPEND; then
3266                 append $optname "$optval"
3267             else
3268                 die_unknown $opt
3269             fi
3270         ;;
3271     esac
3272 done
3273
3274 for e in $env; do
3275     eval "export $e"
3276 done
3277
3278 disabled logging && logfile=/dev/null
3279
3280 # Disable all the library-specific components if the library itself
3281 # is disabled, see AVCODEC_LIST and following _LIST variables.
3282
3283 disable_components(){
3284     disabled ${1} && disable $(
3285         eval components="\$$(toupper ${1})_COMPONENTS"
3286         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3287     )
3288 }
3289
3290 map 'disable_components $v' $LIBRARY_LIST
3291
3292 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3293 set >> $logfile
3294
3295 test -n "$valgrind" && toolchain="valgrind-memcheck"
3296
3297 case "$toolchain" in
3298     *-asan)
3299         cc_default="${toolchain%-asan}"
3300         add_cflags  -fsanitize=address
3301         add_ldflags -fsanitize=address
3302     ;;
3303     *-tsan)
3304         cc_default="${toolchain%-tsan}"
3305         add_cflags  -fsanitize=thread -pie
3306         add_ldflags -fsanitize=thread -pie
3307         case "$toolchain" in
3308             gcc-tsan)
3309                 add_cflags  -fPIC
3310                 add_ldflags -fPIC
3311                 ;;
3312         esac
3313     ;;
3314     *-usan)
3315         cc_default="${toolchain%-usan}"
3316         add_cflags  -fsanitize=undefined
3317         add_ldflags -fsanitize=undefined
3318     ;;
3319     valgrind-*)
3320         target_exec_default="valgrind"
3321         case "$toolchain" in
3322             valgrind-massif)
3323                 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"
3324                 ;;
3325             valgrind-memcheck)
3326                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3327                 ;;
3328         esac
3329     ;;
3330     msvc)
3331         # Check whether the current MSVC version needs the C99 converter.
3332         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3333         # support enough of C99 to build ffmpeg. Default to the new
3334         # behaviour if the regexp was unable to match anything, since this
3335         # successfully parses the version number of existing supported
3336         # versions that require the converter (MSVC 2010 and 2012).
3337         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3338         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3339             cc_default="cl"
3340         else
3341             cc_default="c99wrap cl"
3342         fi
3343         ld_default="$source_path/compat/windows/mslink"
3344         nm_default="dumpbin -symbols"
3345         ar_default="lib"
3346         case "$arch" in
3347         arm*)
3348             as_default="armasm"
3349             ;;
3350         esac
3351         target_os_default="win32"
3352         # Use a relative path for TMPDIR. This makes sure all the
3353         # ffconf temp files are written with a relative path, avoiding
3354         # issues with msys/win32 path conversion for MSVC parameters
3355         # such as -Fo<file> or -out:<file>.
3356         TMPDIR=.
3357     ;;
3358     icl)
3359         cc_default="icl"
3360         ld_default="xilink"
3361         nm_default="dumpbin -symbols"
3362         ar_default="xilib"
3363         target_os_default="win32"
3364         TMPDIR=.
3365     ;;
3366     gcov)
3367         add_cflags  -fprofile-arcs -ftest-coverage
3368         add_ldflags -fprofile-arcs -ftest-coverage
3369     ;;
3370     hardened)
3371         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3372         add_cflags   -fno-strict-overflow -fstack-protector-all
3373         add_ldflags  -Wl,-z,relro -Wl,-z,now
3374     ;;
3375     ?*)
3376         die "Unknown toolchain $toolchain"
3377     ;;
3378 esac
3379
3380 test -n "$cross_prefix" && enable cross_compile
3381
3382 if enabled cross_compile; then
3383     test -n "$arch" && test -n "$target_os" ||
3384         die "Must specify target arch and OS when cross-compiling"
3385 fi
3386
3387 ar_default="${cross_prefix}${ar_default}"
3388 cc_default="${cross_prefix}${cc_default}"
3389 cxx_default="${cross_prefix}${cxx_default}"
3390 nm_default="${cross_prefix}${nm_default}"
3391 pkg_config_default="${cross_prefix}${pkg_config_default}"
3392 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3393     ranlib_default="${cross_prefix}${ranlib_default} -D"
3394 else
3395     ranlib_default="${cross_prefix}${ranlib_default}"
3396 fi
3397 strip_default="${cross_prefix}${strip_default}"
3398 windres_default="${cross_prefix}${windres_default}"
3399
3400 sysinclude_default="${sysroot}/usr/include"
3401
3402 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3403     target_exec target_os yasmexe
3404 enabled cross_compile || host_cc_default=$cc
3405 set_default host_cc
3406
3407 pkg_config_fail_message=""
3408 if ! $pkg_config --version >/dev/null 2>&1; then
3409     warn "$pkg_config not found, library detection may fail."
3410     pkg_config=false
3411 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3412     pkg_config_fail_message="
3413 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3414 fi
3415
3416 if test $doxygen != $doxygen_default && \
3417   ! $doxygen --version >/dev/null 2>&1; then
3418     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3419 fi
3420
3421 exesuf() {
3422     case $1 in
3423         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3424     esac
3425 }
3426
3427 EXESUF=$(exesuf $target_os)
3428 HOSTEXESUF=$(exesuf $host_os)
3429
3430 # set temporary file name
3431 : ${TMPDIR:=$TEMPDIR}
3432 : ${TMPDIR:=$TMP}
3433 : ${TMPDIR:=/tmp}
3434
3435 if [ -n "$tempprefix" ] ; then
3436     mktemp(){
3437         echo $tempprefix.${HOSTNAME}.${UID}
3438     }
3439 elif ! check_cmd mktemp -u XXXXXX; then
3440     # simple replacement for missing mktemp
3441     # NOT SAFE FOR GENERAL USE
3442     mktemp(){
3443         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3444     }
3445 fi
3446
3447 tmpfile(){
3448     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3449         (set -C; exec > $tmp) 2>/dev/null ||
3450         die "Unable to create temporary file in $TMPDIR."
3451     append TMPFILES $tmp
3452     eval $1=$tmp
3453 }
3454
3455 trap 'rm -f -- $TMPFILES' EXIT
3456
3457 tmpfile TMPASM .asm
3458 tmpfile TMPC   .c
3459 tmpfile TMPCPP .cpp
3460 tmpfile TMPE   $EXESUF
3461 tmpfile TMPH   .h
3462 tmpfile TMPM   .m
3463 tmpfile TMPO   .o
3464 tmpfile TMPS   .S
3465 tmpfile TMPSH  .sh
3466 tmpfile TMPV   .ver
3467
3468 unset -f mktemp
3469
3470 chmod +x $TMPE
3471
3472 # make sure we can execute files in $TMPDIR
3473 cat > $TMPSH 2>> $logfile <<EOF
3474 #! /bin/sh
3475 EOF
3476 chmod +x $TMPSH >> $logfile 2>&1
3477 if ! $TMPSH >> $logfile 2>&1; then
3478     cat <<EOF
3479 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3480 variable to another directory and make sure that it is not mounted noexec.
3481 EOF
3482     die "Sanity test failed."
3483 fi
3484
3485 armasm_flags(){
3486     for flag; do
3487         case $flag in
3488             # Filter out MSVC cl.exe options from cflags that shouldn't
3489             # be passed to gas-preprocessor
3490             -M[TD]*)                                            ;;
3491             *)                  echo $flag                      ;;
3492         esac
3493    done
3494 }
3495
3496 ccc_flags(){
3497     for flag; do
3498         case $flag in
3499             -std=c99)           echo -c99                       ;;
3500             -mcpu=*)            echo -arch ${flag#*=}           ;;
3501             -mieee)             echo -ieee                      ;;
3502             -O*|-fast)          echo $flag                      ;;
3503             -fno-math-errno)    echo -assume nomath_errno       ;;
3504             -g)                 echo -g3                        ;;
3505             -Wall)              echo -msg_enable level2         ;;
3506             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3507             -Wl,*)              echo $flag                      ;;
3508             -f*|-W*)                                            ;;
3509             *)                  echo $flag                      ;;
3510         esac
3511    done
3512 }
3513
3514 cparser_flags(){
3515     for flag; do
3516         case $flag in
3517             -Wno-switch)             echo -Wno-switch-enum ;;
3518             -Wno-format-zero-length) ;;
3519             -Wdisabled-optimization) ;;
3520             -Wno-pointer-sign)       echo -Wno-other ;;
3521             *)                       echo $flag ;;
3522         esac
3523     done
3524 }
3525
3526 msvc_common_flags(){
3527     for flag; do
3528         case $flag in
3529             # In addition to specifying certain flags under the compiler
3530             # specific filters, they must be specified here as well or else the
3531             # generic catch all at the bottom will print the original flag.
3532             -Wall)                ;;
3533             -std=c99)             ;;
3534             # Common flags
3535             -fomit-frame-pointer) ;;
3536             -g)                   echo -Z7 ;;
3537             -fno-math-errno)      ;;
3538             -fno-common)          ;;
3539             -fno-signed-zeros)    ;;
3540             -fPIC)                ;;
3541             -mthumb)              ;;
3542             -march=*)             ;;
3543             -lz)                  echo zlib.lib ;;
3544             -lavifil32)           echo vfw32.lib ;;
3545             -lavicap32)           echo vfw32.lib user32.lib ;;
3546             -lx264)               echo libx264.lib ;;
3547             -l*)                  echo ${flag#-l}.lib ;;
3548             -LARGEADDRESSAWARE)   echo $flag ;;
3549             -L*)                  echo -libpath:${flag#-L} ;;
3550             *)                    echo $flag ;;
3551         esac
3552     done
3553 }
3554
3555 msvc_flags(){
3556     msvc_common_flags "$@"
3557     for flag; do
3558         case $flag in
3559             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3560                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3561                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3562                                        -wd4307 \
3563                                        -wd4273 -wd4554 -wd4701 ;;
3564         esac
3565     done
3566 }
3567
3568 icl_flags(){
3569     msvc_common_flags "$@"
3570     for flag; do
3571         case $flag in
3572             # Despite what Intel's documentation says -Wall, which is supported
3573             # on Windows, does enable remarks so disable them here.
3574             -Wall)                echo $flag -Qdiag-disable:remark ;;
3575             -std=c99)             echo -Qstd=c99 ;;
3576             -flto)                echo -ipo ;;
3577         esac
3578     done
3579 }
3580
3581 icc_flags(){
3582     for flag; do
3583         case $flag in
3584             -flto)                echo -ipo ;;
3585             *)                    echo $flag ;;
3586         esac
3587     done
3588 }
3589
3590 pgi_flags(){
3591     for flag; do
3592         case $flag in
3593             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3594             -fomit-frame-pointer) echo -Mnoframe ;;
3595             -g)                   echo -gopt ;;
3596             *)                    echo $flag ;;
3597         esac
3598     done
3599 }
3600
3601 suncc_flags(){
3602     for flag; do
3603         case $flag in
3604             -march=*|-mcpu=*)
3605                 case "${flag#*=}" in
3606                     native)                   echo -xtarget=native       ;;
3607                     v9|niagara)               echo -xarch=sparc          ;;
3608                     ultrasparc)               echo -xarch=sparcvis       ;;
3609                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3610                     i586|pentium)             echo -xchip=pentium        ;;
3611                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3612                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3613                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3614                     pentium4*)          echo -xtarget=pentium4           ;;
3615                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3616                     *-sse3)             echo -xarch=sse3                 ;;
3617                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3618                     bonnell)                   echo -xarch=ssse3         ;;
3619                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3620                     westmere)                  echo -xtarget=westmere    ;;
3621                     silvermont)                echo -xarch=sse4_2        ;;
3622                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3623                     core-avx*|ivybridge|haswell|broadwell)
3624                                                echo -xarch=avx           ;;
3625                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3626                     btver1)                    echo -xarch=amdsse4a      ;;
3627                     btver2|bdver*)             echo -xarch=avx           ;;
3628                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3629                     k8|opteron|athlon64|athlon-fx)
3630                                                echo -xarch=sse2a         ;;
3631                     athlon*)                   echo -xarch=pentium_proa  ;;
3632                 esac
3633                 ;;
3634             -std=c99)             echo -xc99              ;;
3635             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3636             -fPIC)                echo -KPIC -xcode=pic32 ;;
3637             -W*,*)                echo $flag              ;;
3638             -f*-*|-W*|-mimpure-text)                      ;;
3639             -shared)              echo -G                 ;;
3640             *)                    echo $flag              ;;
3641         esac
3642     done
3643 }
3644
3645 tms470_flags(){
3646     for flag; do
3647         case $flag in
3648             -march=*|-mcpu=*)
3649                 case "${flag#*=}" in
3650                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3651                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3652                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3653                     armv6*|arm11*)          echo -mv=6   ;;
3654                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3655                                             echo -mv=5e  ;;
3656                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3657                 esac
3658                 ;;
3659             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3660             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3661             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3662             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3663             -msoft-float)   echo --float_support=vfplib       ;;
3664             -O[0-3]|-mf=*)  echo $flag                        ;;
3665             -g)             echo -g -mn                       ;;
3666             -pds=*)         echo $flag                        ;;
3667             -D*|-I*)        echo $flag                        ;;
3668             --gcc|--abi=*)  echo $flag                        ;;
3669             -me)            echo $flag                        ;;
3670         esac
3671     done
3672 }
3673
3674 probe_cc(){
3675     pfx=$1
3676     _cc=$2
3677     first=$3
3678
3679     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3680     unset _ld_o _ldflags _ld_lib _ld_path
3681     unset _depflags _DEPCMD _DEPFLAGS
3682     _flags_filter=echo
3683
3684     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3685         true # no-op to avoid reading stdin in following checks
3686     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3687         _type=llvm_gcc
3688         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3689         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3690         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3691         _cflags_speed='-O3'
3692         _cflags_size='-Os'
3693     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3694         _type=gcc
3695         gcc_version=$($_cc --version | head -n1)
3696         gcc_basever=$($_cc -dumpversion)
3697         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3698         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3699         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3700         case $gcc_basever in
3701             2) ;;
3702             2.*) ;;
3703             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3704         esac
3705         if [ "$first" = true ]; then
3706             case $gcc_basever in
3707                 4.2*)
3708                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3709             esac
3710         fi
3711         _cflags_speed='-O3'
3712         _cflags_size='-Os'
3713     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3714         _type=icc
3715         _ident=$($_cc --version | head -n1)
3716         _depflags='-MMD'
3717         _cflags_speed='-O3'
3718         _cflags_size='-Os'
3719         _cflags_noopt='-O1'
3720         _flags_filter=icc_flags
3721     elif $_cc -v 2>&1 | grep -q xlc; then
3722         _type=xlc
3723         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3724         _cflags_speed='-O5'
3725         _cflags_size='-O5 -qcompact'
3726     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3727         _type=ccc
3728         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3729         _DEPFLAGS='-M'
3730         _cflags_speed='-fast'
3731         _cflags_size='-O1'
3732         _flags_filter=ccc_flags
3733     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3734         test -d "$sysroot" || die "No valid sysroot specified."
3735         _type=armcc
3736         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3737         armcc_conf="$PWD/armcc.conf"
3738         $_cc --arm_linux_configure                 \
3739              --arm_linux_config_file="$armcc_conf" \
3740              --configure_sysroot="$sysroot"        \
3741              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3742              die "Error creating armcc configuration file."
3743         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3744         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3745         as_default="${cross_prefix}gcc"
3746         _depflags='-MMD'
3747         _cflags_speed='-O3'
3748         _cflags_size='-Os'
3749     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3750         _type=tms470
3751         _ident=$($_cc -version | head -n1 | tr -s ' ')
3752         _flags='--gcc --abi=eabi -me'
3753         _cc_e='-ppl -fe=$@'
3754         _cc_o='-fe=$@'
3755         _depflags='-ppa -ppd=$(@:.o=.d)'
3756         _cflags_speed='-O3 -mf=5'
3757         _cflags_size='-O3 -mf=2'
3758         _flags_filter=tms470_flags
3759     elif $_cc -v 2>&1 | grep -q clang; then
3760         _type=clang
3761         _ident=$($_cc --version 2>/dev/null | head -n1)
3762         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3763         _cflags_speed='-O3'
3764         _cflags_size='-Os'
3765     elif $_cc -V 2>&1 | grep -q Sun; then
3766         _type=suncc
3767         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3768         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3769         _DEPFLAGS='-xM1 -xc99'
3770         _ldflags='-std=c99'
3771         _cflags_speed='-O5'
3772         _cflags_size='-O5 -xspace'
3773         _flags_filter=suncc_flags
3774     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3775         _type=pathscale
3776         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3777         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3778         _cflags_speed='-O2'
3779         _cflags_size='-Os'
3780         _flags_filter='filter_out -Wdisabled-optimization'
3781     elif $_cc -v 2>&1 | grep -q Open64; then
3782         _type=open64
3783         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3784         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3785         _cflags_speed='-O2'
3786         _cflags_size='-Os'
3787         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3788     elif $_cc -V 2>&1 | grep -q Portland; then
3789         _type=pgi
3790         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3791         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3792         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3793         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3794         _cflags_noopt="-O"
3795         _flags_filter=pgi_flags
3796     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3797         _type=armasm
3798         _ident=$($_cc | head -n1)
3799         # 4509: "This form of conditional instruction is deprecated"
3800         _flags="-nologo -ignore 4509"
3801         _flags_filter=armasm_flags
3802     elif $_cc 2>&1 | grep -q Intel; then
3803         _type=icl
3804         _ident=$($_cc 2>&1 | head -n1)
3805         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3806         # Not only is O3 broken on 13.x+ but it is slower on all previous
3807         # versions (tested) as well.
3808         _cflags_speed="-O2"
3809         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3810         if $_cc 2>&1 | grep -q Linker; then
3811             _ld_o='-out:$@'
3812         else
3813             _ld_o='-Fe$@'
3814         fi
3815         _cc_o='-Fo$@'
3816         _cc_e='-P'
3817         _flags_filter=icl_flags
3818         _ld_lib='lib%.a'
3819         _ld_path='-libpath:'
3820         # -Qdiag-error to make icl error when seeing certain unknown arguments
3821         _flags='-nologo -Qdiag-error:4044,10157'
3822         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3823         # with MSVC which enables it by default.
3824         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3825         disable stripping
3826     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3827         _type=msvc
3828         _ident=$($_cc 2>&1 | head -n1)
3829         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3830         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3831         _cflags_speed="-O2"
3832         _cflags_size="-O1"
3833         if $_cc -nologo- 2>&1 | grep -q Linker; then
3834             _ld_o='-out:$@'
3835         else
3836             _ld_o='-Fe$@'
3837         fi
3838         _cc_o='-Fo$@'
3839         _cc_e='-P -Fi$@'
3840         _flags_filter=msvc_flags
3841         _ld_lib='lib%.a'
3842         _ld_path='-libpath:'
3843         _flags='-nologo'
3844         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3845         disable stripping
3846     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3847         _type=cparser
3848         _ident=$($_cc --version | head -n1)
3849         _depflags='-MMD'
3850         _cflags_speed='-O4'
3851         _cflags_size='-O2'
3852         _flags_filter=cparser_flags
3853     fi
3854
3855     eval ${pfx}_type=\$_type
3856     eval ${pfx}_ident=\$_ident
3857 }
3858
3859 set_ccvars(){
3860     eval ${1}_C=\${_cc_c-\${${1}_C}}
3861     eval ${1}_E=\${_cc_e-\${${1}_E}}
3862     eval ${1}_O=\${_cc_o-\${${1}_O}}
3863
3864     if [ -n "$_depflags" ]; then
3865         eval ${1}_DEPFLAGS=\$_depflags
3866     else
3867         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3868         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3869         eval DEP${1}FLAGS=\$_flags
3870     fi
3871 }
3872
3873 probe_cc cc "$cc" "true"
3874 cflags_filter=$_flags_filter
3875 cflags_speed=$_cflags_speed
3876 cflags_size=$_cflags_size
3877 cflags_noopt=$_cflags_noopt
3878 add_cflags $_flags $_cflags
3879 cc_ldflags=$_ldflags
3880 set_ccvars CC
3881
3882 probe_cc hostcc "$host_cc"
3883 host_cflags_filter=$_flags_filter
3884 add_host_cflags  $_flags $_cflags
3885 set_ccvars HOSTCC
3886
3887 test -n "$cc_type" && enable $cc_type ||
3888     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3889
3890 : ${as_default:=$cc}
3891 : ${objcc_default:=$cc}
3892 : ${dep_cc_default:=$cc}
3893 : ${ld_default:=$cc}
3894 : ${host_ld_default:=$host_cc}
3895 set_default ar as objcc dep_cc ld host_ld windres
3896
3897 probe_cc as "$as"
3898 asflags_filter=$_flags_filter
3899 add_asflags $_flags $_cflags
3900 set_ccvars AS
3901
3902 probe_cc objcc "$objcc"
3903 objcflags_filter=$_flags_filter
3904 add_objcflags $_flags $_cflags
3905 set_ccvars OBJC
3906
3907 probe_cc ld "$ld"
3908 ldflags_filter=$_flags_filter
3909 add_ldflags $_flags $_ldflags
3910 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3911 LD_O=${_ld_o-$LD_O}
3912 LD_LIB=${_ld_lib-$LD_LIB}
3913 LD_PATH=${_ld_path-$LD_PATH}
3914
3915 probe_cc hostld "$host_ld"
3916 host_ldflags_filter=$_flags_filter
3917 add_host_ldflags $_flags $_ldflags
3918 HOSTLD_O=${_ld_o-$HOSTLD_O}
3919
3920 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3921     probe_cc depcc "$dep_cc"
3922     CCDEP=${_DEPCMD:-$DEPCMD}
3923     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3924     DEPCCFLAGS=$_flags
3925 fi
3926
3927 if $ar 2>&1 | grep -q Microsoft; then
3928     arflags="-nologo"
3929     ar_o='-out:$@'
3930 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3931     arflags="rq"
3932     ar_o='$@'
3933 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3934     arflags='-Xany -r -c'
3935     ar_o='$@'
3936 elif $ar 2>&1 | grep -q "\[D\] "; then
3937     arflags="rcD"
3938     ar_o='$@'
3939 else
3940     arflags="rc"
3941     ar_o='$@'
3942 fi
3943
3944 add_cflags $extra_cflags
3945 add_cxxflags $extra_cxxflags
3946 add_objcflags $extra_objcflags
3947 add_asflags $extra_cflags
3948
3949 if test -n "$sysroot"; then
3950     case "$cc_type" in
3951         gcc|llvm_gcc|clang)
3952             add_cppflags --sysroot="$sysroot"
3953             add_ldflags --sysroot="$sysroot"
3954 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3955             add_cppflags -isysroot "$sysroot"
3956             add_ldflags -isysroot "$sysroot"
3957         ;;
3958         tms470)
3959             add_cppflags -I"$sysinclude"
3960             add_ldflags  --sysroot="$sysroot"
3961         ;;
3962     esac
3963 fi
3964
3965 if test "$cpu" = host; then
3966     enabled cross_compile &&
3967         die "--cpu=host makes no sense when cross-compiling."
3968
3969     case "$cc_type" in
3970         gcc|llvm_gcc)
3971             check_native(){
3972                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3973                 sed -n "/cc1.*$1=/{
3974                             s/.*$1=\\([^ ]*\\).*/\\1/
3975                             p
3976                             q
3977                         }" $TMPE
3978             }
3979             cpu=$(check_native -march || check_native -mcpu)
3980         ;;
3981         clang)
3982             check_native(){
3983                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3984                 sed -n "/cc1.*-target-cpu /{
3985                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3986                             p
3987                             q
3988                         }" $TMPE
3989             }
3990             cpu=$(check_native -march)
3991         ;;
3992     esac
3993
3994     test "${cpu:-host}" = host &&
3995         die "--cpu=host not supported with compiler $cc"
3996 fi
3997
3998 # Deal with common $arch aliases
3999 case "$arch" in
4000     aarch64|arm64)
4001         arch="aarch64"
4002     ;;
4003     arm*|iPad*|iPhone*)
4004         arch="arm"
4005     ;;
4006     mips*|IP*)
4007         case "$arch" in
4008         *el)
4009             add_cppflags -EL
4010             add_ldflags -EL
4011         ;;
4012         *eb)
4013             add_cppflags -EB
4014             add_ldflags -EB
4015         ;;
4016         esac
4017         arch="mips"
4018     ;;
4019     parisc*|hppa*)
4020         arch="parisc"
4021     ;;
4022     "Power Macintosh"|ppc*|powerpc*)
4023         arch="ppc"
4024     ;;
4025     s390|s390x)
4026         arch="s390"
4027     ;;
4028     sh4|sh)
4029         arch="sh4"
4030     ;;
4031     sun4u|sparc*)
4032         arch="sparc"
4033     ;;
4034     tilegx|tile-gx)
4035         arch="tilegx"
4036     ;;
4037     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4038         arch="x86"
4039     ;;
4040 esac
4041
4042 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4043 enable $arch
4044
4045 # Add processor-specific flags
4046 if enabled aarch64; then
4047
4048     case $cpu in
4049         armv*)
4050             cpuflags="-march=$cpu"
4051         ;;
4052         *)
4053             cpuflags="-mcpu=$cpu"
4054         ;;
4055     esac
4056
4057 elif enabled alpha; then
4058
4059     cpuflags="-mcpu=$cpu"
4060
4061 elif enabled arm; then
4062
4063     check_arm_arch() {
4064         check_cpp_condition stddef.h \
4065             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4066             $cpuflags
4067     }
4068
4069     probe_arm_arch() {
4070         if   check_arm_arch 4;        then echo armv4;
4071         elif check_arm_arch 4T;       then echo armv4t;
4072         elif check_arm_arch 5;        then echo armv5;
4073         elif check_arm_arch 5E;       then echo armv5e;
4074         elif check_arm_arch 5T;       then echo armv5t;
4075         elif check_arm_arch 5TE;      then echo armv5te;
4076         elif check_arm_arch 5TEJ;     then echo armv5te;
4077         elif check_arm_arch 6;        then echo armv6;
4078         elif check_arm_arch 6J;       then echo armv6j;
4079         elif check_arm_arch 6K;       then echo armv6k;
4080         elif check_arm_arch 6Z;       then echo armv6z;
4081         elif check_arm_arch 6ZK;      then echo armv6zk;
4082         elif check_arm_arch 6T2;      then echo armv6t2;
4083         elif check_arm_arch 7;        then echo armv7;
4084         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4085         elif check_arm_arch 7S;       then echo armv7-a;
4086         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4087         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4088         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4089         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4090         fi
4091     }
4092
4093     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4094
4095     case $cpu in
4096         armv*)
4097             cpuflags="-march=$cpu"
4098             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4099         ;;
4100         *)
4101             cpuflags="-mcpu=$cpu"
4102             case $cpu in
4103                 cortex-a*)                               subarch=armv7a  ;;
4104                 cortex-r*)                               subarch=armv7r  ;;
4105                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4106                 arm11*)                                  subarch=armv6   ;;
4107                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4108                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4109                 *)                             subarch=$(probe_arm_arch) ;;
4110             esac
4111         ;;
4112     esac
4113
4114     case "$subarch" in
4115         armv5t*)    enable fast_clz                ;;
4116         armv[6-8]*)
4117             enable fast_clz
4118             disabled fast_unaligned || enable fast_unaligned
4119             ;;
4120     esac
4121
4122 elif enabled avr32; then
4123
4124     case $cpu in
4125         ap7[02]0[0-2])
4126             subarch="avr32_ap"
4127             cpuflags="-mpart=$cpu"
4128         ;;
4129         ap)
4130             subarch="avr32_ap"
4131             cpuflags="-march=$cpu"
4132         ;;
4133         uc3[ab]*)
4134             subarch="avr32_uc"
4135             cpuflags="-mcpu=$cpu"
4136         ;;
4137         uc)
4138             subarch="avr32_uc"
4139             cpuflags="-march=$cpu"
4140         ;;
4141     esac
4142
4143 elif enabled bfin; then
4144
4145     cpuflags="-mcpu=$cpu"
4146
4147 elif enabled mips; then
4148
4149     cpuflags="-march=$cpu"
4150
4151     case $cpu in
4152         24kc)
4153             disable mips32r6
4154             disable mips64r2
4155             disable mips64r6
4156             disable mipsfpu
4157             disable mipsdsp
4158             disable mipsdspr2
4159             disable msa
4160         ;;
4161         24kf*)
4162             disable mips32r6
4163             disable mips64r2
4164             disable mips64r6
4165             disable mipsdsp
4166             disable mipsdspr2
4167             disable msa
4168         ;;
4169         24kec|34kc|1004kc)
4170             disable mips32r6
4171             disable mips64r2
4172             disable mips64r6
4173             disable mipsfpu
4174             disable mipsdspr2
4175             disable msa
4176         ;;
4177         24kef*|34kf*|1004kf*)
4178             disable mips32r6
4179             disable mips64r2
4180             disable mips64r6
4181             disable mipsdspr2
4182             disable msa
4183         ;;
4184         74kc)
4185             disable mips32r6
4186             disable mips64r2
4187             disable mips64r6
4188             disable mipsfpu
4189             disable msa
4190         ;;
4191         74kf)
4192             disable mips32r6
4193             disable mips64r2
4194             disable mips64r6
4195             disable msa
4196         ;;
4197         p5600)
4198             disable mips32r6
4199             disable mips64r2
4200             disable mips64r6
4201             disable mipsdsp
4202             disable mipsdspr2
4203             check_cflags "-mtune=p5600" &&
4204             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4205             add_asflags "-mfp64"
4206         ;;
4207         i6400)
4208             disable mips32r2
4209             disable mips32r6
4210             disable mips64r2
4211             disable mipsdsp
4212             disable mipsdspr2
4213             check_cflags "-mtune=i6400 -mabi=64" &&
4214             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4215             check_ldflags "-mabi=64" &&
4216             add_asflags "-mfp64"
4217         ;;
4218         loongson*)
4219             disable mips32r2
4220             disable mips32r6
4221             disable mips64r2
4222             disable mips64r6
4223             disable mipsfpu
4224             disable mipsdsp
4225             disable mipsdspr2
4226             disable msa
4227             enable local_aligned_8 local_aligned_16 local_aligned_32
4228             enable simd_align_16
4229             enable fast_64bit
4230             enable fast_clz
4231             enable fast_cmov
4232             enable fast_unaligned
4233             disable aligned_stack
4234             case $cpu in
4235                 loongson3*)
4236                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4237                 ;;
4238                 loongson2e)
4239                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4240                 ;;
4241                 loongson2f)
4242                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4243                 ;;
4244             esac
4245         ;;
4246         generic)
4247             disable mips64r6
4248             disable msa
4249         ;;
4250         *)
4251             # Unknown CPU. Disable everything.
4252             warn "unknown CPU. Disabling all MIPS optimizations."
4253             disable mipsfpu
4254             disable mips32r2
4255             disable mips32r6
4256             disable mips64r2
4257             disable mips64r6
4258             disable mipsdsp
4259             disable mipsdspr2
4260             disable msa
4261         ;;
4262     esac
4263
4264 elif enabled ppc; then
4265
4266     disable ldbrx
4267
4268     case $(tolower $cpu) in
4269         601|ppc601|powerpc601)
4270             cpuflags="-mcpu=601"
4271             disable altivec
4272         ;;
4273         603*|ppc603*|powerpc603*)
4274             cpuflags="-mcpu=603"
4275             disable altivec
4276         ;;
4277         604*|ppc604*|powerpc604*)
4278             cpuflags="-mcpu=604"
4279             disable altivec
4280         ;;
4281         g3|75*|ppc75*|powerpc75*)
4282             cpuflags="-mcpu=750"
4283             disable altivec
4284         ;;
4285         g4|745*|ppc745*|powerpc745*)
4286             cpuflags="-mcpu=7450"
4287             disable vsx
4288         ;;
4289         74*|ppc74*|powerpc74*)
4290             cpuflags="-mcpu=7400"
4291             disable vsx
4292         ;;
4293         g5|970|ppc970|powerpc970)
4294             cpuflags="-mcpu=970"
4295             disable vsx
4296         ;;
4297         power[3-6]*)
4298             cpuflags="-mcpu=$cpu"
4299             disable vsx
4300         ;;
4301         power[7-8]*)
4302             cpuflags="-mcpu=$cpu"
4303         ;;
4304         cell)
4305             cpuflags="-mcpu=cell"
4306             enable ldbrx
4307             disable vsx
4308         ;;
4309         e500mc)
4310             cpuflags="-mcpu=e500mc"
4311             disable altivec
4312         ;;
4313         e500v2)
4314             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4315             disable altivec
4316             disable dcbzl
4317         ;;
4318         e500)
4319             cpuflags="-mcpu=8540 -mhard-float"
4320             disable altivec
4321             disable dcbzl
4322         ;;
4323     esac
4324
4325 elif enabled sparc; then
4326
4327     case $cpu in
4328         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4329             cpuflags="-mcpu=$cpu"
4330         ;;
4331         ultrasparc*|niagara[234])
4332             cpuflags="-mcpu=$cpu"
4333         ;;
4334     esac
4335
4336 elif enabled x86; then
4337
4338     case $cpu in
4339         i[345]86|pentium)
4340             cpuflags="-march=$cpu"
4341             disable i686
4342             disable mmx
4343         ;;
4344         # targets that do NOT support nopl and conditional mov (cmov)
4345         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4346             cpuflags="-march=$cpu"
4347             disable i686
4348         ;;
4349         # targets that do support nopl and conditional mov (cmov)
4350         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4351         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4352             cpuflags="-march=$cpu"
4353             enable i686
4354             enable fast_cmov
4355         ;;
4356         # targets that do support conditional mov but on which it's slow
4357         pentium4|pentium4m|prescott|nocona)
4358             cpuflags="-march=$cpu"
4359             enable i686
4360             disable fast_cmov
4361         ;;
4362     esac
4363
4364 fi
4365
4366 if [ "$cpu" != generic ]; then
4367     add_cflags  $cpuflags
4368     add_asflags $cpuflags
4369     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4370 fi
4371
4372 # compiler sanity check
4373 check_exec <<EOF
4374 int main(void){ return 0; }
4375 EOF
4376 if test "$?" != 0; then
4377     echo "$cc is unable to create an executable file."
4378     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4379         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4380         echo "Only do this if you know what cross compiling means."
4381     fi
4382     die "C compiler test failed."
4383 fi
4384
4385 add_cppflags -D_ISOC99_SOURCE
4386 add_cxxflags -D__STDC_CONSTANT_MACROS
4387 check_cflags -std=c99
4388 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4389 #include <stdlib.h>
4390 EOF
4391 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4392 #include <stdlib.h>
4393 EOF
4394
4395 add_host_cppflags -D_ISOC99_SOURCE
4396 check_host_cflags -std=c99
4397 check_host_cflags -Wall
4398 check_host_cflags -O3
4399
4400 check_64bit(){
4401     arch32=$1
4402     arch64=$2
4403     expr=$3
4404     check_code cc "" "int test[2*($expr) - 1]" &&
4405         subarch=$arch64 || subarch=$arch32
4406 }
4407
4408 case "$arch" in
4409     aarch64|alpha|ia64)
4410         spic=$shared
4411     ;;
4412     mips)
4413         check_64bit mips mips64 '_MIPS_SIM > 1'
4414         spic=$shared
4415     ;;
4416     parisc)
4417         check_64bit parisc parisc64 'sizeof(void *) > 4'
4418         spic=$shared
4419     ;;
4420     ppc)
4421         check_64bit ppc ppc64 'sizeof(void *) > 4'
4422         spic=$shared
4423     ;;
4424     s390)
4425         check_64bit s390 s390x 'sizeof(void *) > 4'
4426         spic=$shared
4427     ;;
4428     sparc)
4429         check_64bit sparc sparc64 'sizeof(void *) > 4'
4430         spic=$shared
4431     ;;
4432     x86)
4433         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4434         # Treat x32 as x64 for now. Note it also needs spic=$shared
4435         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4436             subarch=x86_64
4437         if test "$subarch" = "x86_64"; then
4438             spic=$shared
4439         fi
4440     ;;
4441     ppc)
4442         check_cc <<EOF && subarch="ppc64"
4443         int test[(int)sizeof(char*) - 7];
4444 EOF
4445     ;;
4446 esac
4447
4448 enable $subarch
4449 enabled spic && enable_weak pic
4450
4451 # OS specific
4452 case $target_os in
4453     aix)
4454         SHFLAGS=-shared
4455         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4456         enabled shared && add_ldflags -Wl,-brtl
4457         ;;
4458     android)
4459         disable symver
4460         enable section_data_rel_ro
4461         SLIB_INSTALL_NAME='$(SLIBNAME)'
4462         SLIB_INSTALL_LINKS=
4463         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4464         ;;
4465     haiku)
4466         prefix_default="/boot/common"
4467         network_extralibs="-lnetwork"
4468         host_libs=
4469         ;;
4470     sunos)
4471         SHFLAGS='-shared -Wl,-h,$$(@F)'
4472         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4473         network_extralibs="-lsocket -lnsl"
4474         add_cppflags -D__EXTENSIONS__
4475         # When using suncc to build, the Solaris linker will mark
4476         # an executable with each instruction set encountered by
4477         # the Solaris assembler.  As our libraries contain their own
4478         # guards for processor-specific code, instead suppress
4479         # generation of the HWCAPS ELF section on Solaris x86 only.
4480         enabled_all suncc x86 &&
4481             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4482             add_ldflags -Wl,-M,mapfile
4483         nm_default='nm -P -g'
4484         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4485         ;;
4486     netbsd)
4487         disable symver
4488         oss_indev_extralibs="-lossaudio"
4489         oss_outdev_extralibs="-lossaudio"
4490         enabled gcc || check_ldflags -Wl,-zmuldefs
4491         ;;
4492     openbsd|bitrig)
4493         disable symver
4494         SHFLAGS='-shared'
4495         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4496         SLIB_INSTALL_LINKS=
4497         oss_indev_extralibs="-lossaudio"
4498         oss_outdev_extralibs="-lossaudio"
4499         ;;
4500     dragonfly)
4501         disable symver
4502         ;;
4503     freebsd)
4504         ;;
4505     bsd/os)
4506         add_extralibs -lpoll -lgnugetopt
4507         strip="strip -d"
4508         ;;
4509     darwin)
4510         enabled ppc && add_asflags -force_cpusubtype_ALL
4511         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4512         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4513         strip="${strip} -x"
4514         add_ldflags -Wl,-dynamic,-search_paths_first
4515         SLIBSUF=".dylib"
4516         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4517         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4518         objformat="macho"
4519         enabled x86_64 && objformat="macho64"
4520         enabled_any pic shared x86_64 ||
4521             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4522         ;;
4523     msys*)
4524         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4525         ;;
4526     mingw32*|mingw64*)
4527         if test $target_os = "mingw32ce"; then
4528             disable network
4529         else
4530             target_os=mingw32
4531         fi
4532         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4533         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4534         LIBTARGET=i386
4535         if enabled x86_64; then
4536             LIBTARGET="i386:x86-64"
4537         elif enabled arm; then
4538             LIBTARGET=arm-wince
4539         fi
4540         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4541         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4542         shlibdir_default="$bindir_default"
4543         SLIBPREF=""
4544         SLIBSUF=".dll"
4545         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4546         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4547         dlltool="${cross_prefix}dlltool"
4548         if check_cmd lib.exe -list; then
4549             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4550             if enabled x86_64; then
4551                 LIBTARGET=x64
4552             fi
4553         elif check_cmd $dlltool --version; then
4554             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4555         fi
4556         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4557         SLIB_INSTALL_LINKS=
4558         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4559         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4560         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4561         objformat="win32"
4562         ranlib=:
4563         enable dos_paths
4564         check_ldflags -Wl,--nxcompat,--dynamicbase
4565         # Lets work around some stupidity in binutils.
4566         # ld will strip relocations from executables even though we need them
4567         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4568         # however ld then forgets what the entry point should be (oops) so we
4569         # have to manually (re)set it.
4570         if enabled x86_32; then
4571             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4572         elif enabled x86_64; then
4573             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4574             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4575             # Set image base >4GB for extra entropy with HEASLR
4576             add_ldexeflags -Wl,--image-base,0x140000000
4577             append SHFLAGS -Wl,--image-base,0x180000000
4578         fi
4579         ;;
4580     win32|win64)
4581         disable symver
4582         if enabled shared; then
4583             # Link to the import library instead of the normal static library
4584             # for shared libs.
4585             LD_LIB='%.lib'
4586             # Cannot build both shared and static libs with MSVC or icl.
4587             disable static
4588         fi
4589         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4590         shlibdir_default="$bindir_default"
4591         SLIBPREF=""
4592         SLIBSUF=".dll"
4593         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4594         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4595         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4596         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4597         SLIB_INSTALL_LINKS=
4598         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4599         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4600         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4601         objformat="win32"
4602         ranlib=:
4603         enable dos_paths
4604         ;;
4605     cygwin*)
4606         target_os=cygwin
4607         shlibdir_default="$bindir_default"
4608         SLIBPREF="cyg"
4609         SLIBSUF=".dll"
4610         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4611         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4612         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4613         SLIB_INSTALL_LINKS=
4614         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4615         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4616         objformat="win32"
4617         enable dos_paths
4618         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4619         ;;
4620     *-dos|freedos|opendos)
4621         network_extralibs="-lsocket"
4622         objformat="coff"
4623         enable dos_paths
4624         add_cppflags -U__STRICT_ANSI__
4625         ;;
4626     linux)
4627         enable dv1394
4628         enable section_data_rel_ro
4629         ;;
4630     irix*)
4631         target_os=irix
4632         ranlib="echo ignoring ranlib"
4633         ;;
4634     os/2*)
4635         strip="lxlite -CS"
4636         ln_s="cp -f"
4637         objformat="aout"
4638         add_cppflags -D_GNU_SOURCE
4639         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4640         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4641         LIBSUF="_s.a"
4642         SLIBPREF=""
4643         SLIBSUF=".dll"
4644         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4645         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4646         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4647             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4648             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4649             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4650             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4651         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4652             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4653         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4654         enable dos_paths
4655         enable_weak os2threads
4656         ;;
4657     gnu/kfreebsd)
4658         add_cppflags -D_BSD_SOURCE
4659         ;;
4660     gnu)
4661         ;;
4662     qnx)
4663         add_cppflags -D_QNX_SOURCE
4664         network_extralibs="-lsocket"
4665         ;;
4666     symbian)
4667         SLIBSUF=".dll"
4668         enable dos_paths
4669         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4670         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4671         add_ldflags -Wl,--target1-abs,--no-undefined \
4672                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4673                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4674         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4675                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4676                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4677         ;;
4678     osf1)
4679         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4680         ;;
4681     minix)
4682         ;;
4683     plan9)
4684         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4685                      -D_REENTRANT_SOURCE        \
4686                      -D_RESEARCH_SOURCE         \
4687                      -DFD_SETSIZE=96            \
4688                      -DHAVE_SOCK_OPTS
4689         add_compat strtod.o strtod=avpriv_strtod
4690         network_extralibs='-lbsd'
4691         exeobjs=compat/plan9/main.o
4692         disable ffserver
4693         cp_f='cp'
4694         ;;
4695     none)
4696         ;;
4697     *)
4698         die "Unknown OS '$target_os'."
4699         ;;
4700 esac
4701
4702 # test if creating links works
4703 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4704 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4705 mkdir "$link_dest"
4706 $ln_s "$link_dest" "$link_name"
4707 touch "$link_dest/test_file"
4708 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4709     # create link to source path
4710     [ -e src ] && rm src
4711     $ln_s "$source_path" src
4712     source_link=src
4713 else
4714     # creating directory links doesn't work
4715     # fall back to using the full source path
4716     source_link="$source_path"
4717 fi
4718 # cleanup
4719 rm -r "$link_dest"
4720 rm -r "$link_name"
4721
4722 # determine libc flavour
4723
4724 probe_libc(){
4725     pfx=$1
4726     pfx_no_=${pfx%_}
4727     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4728     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4729         eval ${pfx}libc_type=uclibc
4730         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4731     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4732         eval ${pfx}libc_type=glibc
4733         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4734     # MinGW headers can be installed on Cygwin, so check for newlib first.
4735     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4736         eval ${pfx}libc_type=newlib
4737         add_${pfx}cppflags -U__STRICT_ANSI__
4738     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4739     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4740         eval ${pfx}libc_type=mingw64
4741         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4742             add_compat msvcrt/snprintf.o
4743             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4744         fi
4745         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4746         eval test \$${pfx_no_}cc_type = "gcc" &&
4747             add_${pfx}cppflags -D__printf__=__gnu_printf__
4748     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4749          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4750         eval ${pfx}libc_type=mingw32
4751         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4752             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4753             die "ERROR: MinGW32 runtime version must be >= 3.15."
4754         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4755         eval test \$${pfx_no_}cc_type = "gcc" &&
4756             add_${pfx}cppflags -D__printf__=__gnu_printf__
4757     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4758         eval ${pfx}libc_type=msvcrt
4759         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4760             if [ "$pfx" = host_ ]; then
4761                 add_host_cppflags -Dsnprintf=_snprintf
4762             else
4763                 add_compat strtod.o strtod=avpriv_strtod
4764                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4765                                              _snprintf=avpriv_snprintf  \
4766                                              vsnprintf=avpriv_vsnprintf
4767             fi
4768         fi
4769         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4770         # 0x601 by default unless something else is set by the user.
4771         # This can easily lead to us detecting functions only present
4772         # in such new versions and producing binaries requiring windows 7.0.
4773         # Therefore explicitly set the default to XP unless the user has
4774         # set something else on the command line.
4775         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4776         # family. For these cases, configure is free to use any functions
4777         # found in the SDK headers by default. (Alternatively, we could force
4778         # _WIN32_WINNT to 0x0602 in that case.)
4779         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4780             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4781 #ifdef WINAPI_FAMILY
4782 #include <winapifamily.h>
4783 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4784 #error not desktop
4785 #endif
4786 #endif
4787 EOF
4788     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4789         eval ${pfx}libc_type=klibc
4790     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4791         eval ${pfx}libc_type=bionic
4792     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4793         eval ${pfx}libc_type=solaris
4794         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4795     fi
4796     check_${pfx}cc <<EOF
4797 #include <time.h>
4798 void *v = localtime_r;
4799 EOF
4800 test "$?" != 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
4801 #include <time.h>
4802 void *v = localtime_r;
4803 EOF
4804
4805 }
4806
4807 probe_libc
4808 test -n "$libc_type" && enable libc_$libc_type
4809 probe_libc host_
4810 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4811
4812 case $libc_type in
4813     bionic)
4814         add_compat strtod.o strtod=avpriv_strtod
4815         ;;
4816 esac
4817
4818 # hacks for compiler/libc/os combinations
4819
4820 if enabled_all tms470 libc_glibc; then
4821     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4822     add_cppflags -D__USER_LABEL_PREFIX__=
4823     add_cppflags -D__builtin_memset=memset
4824     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4825     add_cflags   -pds=48    # incompatible redefinition of macro
4826 fi
4827
4828 if enabled_all ccc libc_glibc; then
4829     add_ldflags -Wl,-z,now  # calls to libots crash without this
4830 fi
4831
4832 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4833     add_cppflags '-I\$(SRC_PATH)/compat/float'
4834
4835 esc(){
4836     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4837 }
4838
4839 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4840
4841 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4842
4843 set_default libdir
4844 : ${shlibdir_default:="$libdir"}
4845 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4846
4847 set_default $PATHS_LIST
4848 set_default nm
4849
4850 # we need to build at least one lib type
4851 if ! enabled_any static shared; then
4852     cat <<EOF
4853 At least one library type must be built.
4854 Specify --enable-static to build the static libraries or --enable-shared to
4855 build the shared libraries as well. To only build the shared libraries specify
4856 --disable-static in addition to --enable-shared.
4857 EOF
4858     exit 1;
4859 fi
4860
4861 die_license_disabled() {
4862     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4863 }
4864
4865 die_license_disabled_gpl() {
4866     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4867 }
4868
4869 die_license_disabled gpl frei0r
4870 die_license_disabled gpl libcdio
4871 die_license_disabled gpl librubberband
4872 die_license_disabled gpl libsmbclient
4873 die_license_disabled gpl libutvideo
4874 die_license_disabled gpl libvidstab
4875 die_license_disabled gpl libx264
4876 die_license_disabled gpl libx265
4877 die_license_disabled gpl libxavs
4878 die_license_disabled gpl libxvid
4879 die_license_disabled gpl x11grab
4880
4881 die_license_disabled nonfree libfaac
4882 die_license_disabled nonfree nvenc
4883 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4884 enabled gpl && die_license_disabled_gpl nonfree openssl
4885
4886 die_license_disabled version3 gmp
4887 die_license_disabled version3 libopencore_amrnb
4888 die_license_disabled version3 libopencore_amrwb
4889 die_license_disabled version3 libsmbclient
4890 die_license_disabled version3 libvo_amrwbenc
4891
4892 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4893
4894 disabled optimizations || check_cflags -fomit-frame-pointer
4895
4896 enable_weak_pic() {
4897     disabled pic && return
4898     enable pic
4899     add_cppflags -DPIC
4900     case "$target_os" in
4901     mingw*|cygwin*)
4902         ;;
4903     *)
4904         add_cflags -fPIC
4905         ;;
4906     esac
4907     add_asflags  -fPIC
4908 }
4909
4910 enabled pic && enable_weak_pic
4911
4912 check_cc <<EOF || die "Symbol mangling check failed."
4913 int ff_extern;
4914 EOF
4915 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4916 extern_prefix=${sym%%ff_extern*}
4917
4918 check_cc <<EOF && enable_weak inline_asm
4919 void foo(void) { __asm__ volatile ("" ::); }
4920 EOF
4921
4922 _restrict=
4923 for restrict_keyword in restrict __restrict__ __restrict; do
4924     check_cc <<EOF && _restrict=$restrict_keyword && break
4925 void foo(char * $restrict_keyword p);
4926 EOF
4927 done
4928
4929 check_cc <<EOF && enable pragma_deprecated
4930 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4931 EOF
4932
4933 check_cc <<EOF && enable attribute_packed
4934 struct { int x; } __attribute__((packed)) x;
4935 EOF
4936
4937 check_cc <<EOF && enable attribute_may_alias
4938 union { int x; } __attribute__((may_alias)) x;
4939 EOF
4940
4941 check_cc <<EOF || die "endian test failed"
4942 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4943 EOF
4944 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4945
4946 if ! enabled ppc64 || enabled bigendian; then
4947     disable vsx
4948 fi
4949
4950 check_gas() {
4951     log "check_gas using '$as' as AS"
4952     # :vararg is used on aarch64, arm and ppc altivec
4953     check_as <<EOF || return 1
4954 .macro m n, y:vararg=0
4955 \n: .int \y
4956 .endm
4957 m x
4958 EOF
4959     # .altmacro is only used in arm asm
4960     ! enabled arm || check_as <<EOF || return 1
4961 .altmacro
4962 EOF
4963     enable gnu_as
4964     return 0
4965 }
4966
4967 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4968     nogas=:
4969     enabled_any arm aarch64 && nogas=die
4970     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4971     as_noop=-v
4972
4973     case $as_type in
4974         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4975         gcc)  gaspp_as_type=gas ;;
4976         *)    gaspp_as_type=$as_type ;;
4977     esac
4978
4979     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4980
4981     test "${as#*gas-preprocessor.pl}" != "$as" ||
4982     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4983         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4984
4985     if ! check_gas ; then
4986         as=${gas:=$as}
4987         check_gas || \
4988             $nogas "GNU assembler not found, install/update gas-preprocessor"
4989     fi
4990
4991     check_as <<EOF && enable as_func
4992 .func test
4993 .endfunc
4994 EOF
4995 fi
4996
4997 check_inline_asm inline_asm_labels '"1:\n"'
4998
4999 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5000
5001 if enabled aarch64; then
5002     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5003     # internal assembler in clang 3.3 does not support this instruction
5004     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5005     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5006
5007     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5008
5009 elif enabled alpha; then
5010
5011     check_cflags -mieee
5012
5013 elif enabled arm; then
5014
5015     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5016
5017     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5018 float func(float a, float b){ return a+b; }
5019 EOF
5020
5021     enabled thumb && check_cflags -mthumb || check_cflags -marm
5022
5023     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5024         enable vfp_args
5025     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5026         enable vfp_args
5027     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5028         case "${cross_prefix:-$cc}" in
5029             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5030             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5031 __asm__ (".eabi_attribute 28, 1");
5032 int main(void) { return 0; }
5033 EOF
5034         esac
5035         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5036     fi
5037
5038     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5039     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5040     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5041     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5042     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5043     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5044     enabled setend  && check_insn setend  'setend be'
5045
5046     [ $target_os = linux ] || [ $target_os = android ] ||
5047         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5048             $ARCH_EXT_LIST_ARM
5049
5050     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5051
5052     check_as <<EOF && enable as_dn_directive
5053 ra .dn d0.i16
5054 .unreq ra
5055 EOF
5056
5057     # llvm's integrated assembler supports .object_arch from llvm 3.5
5058     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5059 .object_arch armv4
5060 EOF
5061
5062     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5063
5064 elif enabled mips; then
5065
5066     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5067     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5068     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5069
5070     # Enable minimum ISA based on selected options
5071     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5072         add_cflags "-mips64r2"
5073         add_asflags "-mips64r2"
5074     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5075         add_cflags "-mips64"
5076         add_asflags "-mips64"
5077     elif enabled mipsdsp || enabled mipsdspr2; then
5078         add_cflags "-mips32r2 -mfp32"
5079         add_asflags "-mips32r2 -mfp32"
5080     fi
5081
5082     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5083      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5084     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5085      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5086     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5087      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5088     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5089      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5090
5091     enabled msa && add_asflags "-mmsa"
5092
5093 elif enabled parisc; then
5094
5095     if enabled gcc; then
5096         case $($cc -dumpversion) in
5097             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5098         esac
5099     fi
5100
5101 elif enabled ppc; then
5102
5103     enable local_aligned_8 local_aligned_16 local_aligned_32
5104
5105     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5106     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5107     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5108     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5109
5110     # AltiVec flags: The FSF version of GCC differs from the Apple version
5111     if enabled altivec; then
5112         check_cflags -maltivec -mabi=altivec &&
5113         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5114         check_cflags -faltivec
5115
5116         # check if our compiler supports Motorola AltiVec C API
5117         check_cc <<EOF || disable altivec
5118 $inc_altivec_h
5119 int main(void) {
5120     vector signed int v1 = (vector signed int) { 0 };
5121     vector signed int v2 = (vector signed int) { 1 };
5122     v1 = vec_add(v1, v2);
5123     return 0;
5124 }
5125 EOF
5126
5127         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5128     fi
5129
5130     if enabled vsx; then
5131         check_cflags -mvsx &&
5132         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5133     fi
5134
5135     if enabled power8; then
5136         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5137     fi
5138
5139 elif enabled x86; then
5140
5141     check_builtin rdtsc    intrin.h   "__rdtsc()"
5142     check_builtin mm_empty mmintrin.h "_mm_empty()"
5143
5144     enable local_aligned_8 local_aligned_16 local_aligned_32
5145
5146     # check whether EBP is available on x86
5147     # As 'i' is stored on the stack, this program will crash
5148     # if the base pointer is used to access it because the
5149     # base pointer is cleared in the inline assembly code.
5150     check_exec_crash <<EOF && enable ebp_available
5151 volatile int i=0;
5152 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5153 return i;
5154 EOF
5155
5156     # check whether EBX is available on x86
5157     check_inline_asm ebx_available '""::"b"(0)' &&
5158         check_inline_asm ebx_available '"":::"%ebx"'
5159
5160     # check whether xmm clobbers are supported
5161     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5162
5163     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5164         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5165
5166     # check whether binutils is new enough to compile SSSE3/MMXEXT
5167     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5168     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5169
5170     if ! disabled_any asm mmx yasm; then
5171         if check_cmd $yasmexe --version; then
5172             enabled x86_64 && yasm_extra="-m amd64"
5173             yasm_debug="-g dwarf2"
5174         elif check_cmd nasm -v; then
5175             yasmexe=nasm
5176             yasm_debug="-g -F dwarf"
5177             if enabled x86_64; then
5178                 case "$objformat" in
5179                     elf)   objformat=elf64 ;;
5180                     win32) objformat=win64 ;;
5181                 esac
5182             fi
5183         fi
5184
5185         YASMFLAGS="-f $objformat $yasm_extra"
5186         enabled pic               && append YASMFLAGS "-DPIC"
5187         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5188         case "$objformat" in
5189             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5190         esac
5191
5192         check_yasm "movbe ecx, [5]" && enable yasm ||
5193             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5194         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5195         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5196         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5197         check_yasm "CPU amdnop" || disable cpunop
5198     fi
5199
5200     case "$cpu" in
5201         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5202             disable fast_clz
5203         ;;
5204     esac
5205
5206 fi
5207
5208 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5209
5210 check_ldflags -Wl,--as-needed
5211 check_ldflags -Wl,-z,noexecstack
5212
5213 if check_func dlopen; then
5214     ldl=
5215 elif check_func dlopen -ldl; then
5216     ldl=-ldl
5217 fi
5218
5219 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5220 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5221 frei0r_filter_extralibs='$ldl'
5222 frei0r_src_filter_extralibs='$ldl'
5223 ladspa_filter_extralibs='$ldl'
5224 nvenc_encoder_extralibs='$ldl'
5225
5226 if ! disabled network; then
5227     check_func getaddrinfo $network_extralibs
5228     check_func inet_aton $network_extralibs
5229
5230     check_type netdb.h "struct addrinfo"
5231     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5232     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5233     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5234     check_type poll.h "struct pollfd"
5235     check_type netinet/sctp.h "struct sctp_event_subscribe"
5236     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5237     check_type netinet/in.h "struct sockaddr_in6"
5238     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5239     check_type "sys/types.h sys/socket.h" socklen_t
5240
5241     # Prefer arpa/inet.h over winsock2
5242     if check_header arpa/inet.h ; then
5243         check_func closesocket
5244     elif check_header winsock2.h ; then
5245         check_func_headers winsock2.h closesocket -lws2 &&
5246             network_extralibs="-lws2" ||
5247         { check_func_headers winsock2.h closesocket -lws2_32 &&
5248             network_extralibs="-lws2_32"; } || disable winsock2_h network
5249         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5250
5251         check_type ws2tcpip.h socklen_t
5252         check_type ws2tcpip.h "struct addrinfo"
5253         check_type ws2tcpip.h "struct group_source_req"
5254         check_type ws2tcpip.h "struct ip_mreq_source"
5255         check_type ws2tcpip.h "struct ipv6_mreq"
5256         check_type winsock2.h "struct pollfd"
5257         check_struct winsock2.h "struct sockaddr" sa_len
5258         check_type ws2tcpip.h "struct sockaddr_in6"
5259         check_type ws2tcpip.h "struct sockaddr_storage"
5260     else
5261         disable network
5262     fi
5263 fi
5264
5265 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5266 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5267 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5268 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5269 check_builtin sarestart signal.h "SA_RESTART"
5270 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5271 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5272 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5273
5274 case "$custom_allocator" in
5275     jemalloc)
5276         # jemalloc by default does not use a prefix
5277         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5278     ;;
5279     tcmalloc)
5280         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5281         malloc_prefix=tc_
5282     ;;
5283 esac
5284
5285 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5286 check_func  ${malloc_prefix}memalign            && enable memalign
5287 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5288
5289 check_func  access
5290 check_func  arc4random
5291 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5292 check_func  fcntl
5293 check_func  fork
5294 check_func  gethrtime
5295 check_func  getopt
5296 check_func  getrusage
5297 check_func  gettimeofday
5298 check_func  isatty
5299 check_func  mach_absolute_time
5300 check_func  mkstemp
5301 check_func  mmap
5302 check_func  mprotect
5303 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5304 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5305 check_func  sched_getaffinity
5306 check_func  setrlimit
5307 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5308 check_func  strerror_r
5309 check_func  sysconf
5310 check_func  sysctl
5311 check_func  usleep
5312
5313 check_func_headers conio.h kbhit
5314 check_func_headers io.h setmode
5315 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5316 check_func_headers stdlib.h getenv
5317 check_func_headers sys/stat.h lstat
5318
5319 check_func_headers windows.h CoTaskMemFree -lole32
5320 check_func_headers windows.h GetProcessAffinityMask
5321 check_func_headers windows.h GetProcessTimes
5322 check_func_headers windows.h GetSystemTimeAsFileTime
5323 check_func_headers windows.h MapViewOfFile
5324 check_func_headers windows.h PeekNamedPipe
5325 check_func_headers windows.h SetConsoleTextAttribute
5326 check_func_headers windows.h SetConsoleCtrlHandler
5327 check_func_headers windows.h Sleep
5328 check_func_headers windows.h VirtualAlloc
5329 check_struct windows.h "CONDITION_VARIABLE" Ptr
5330 check_func_headers glob.h glob
5331 enabled xlib &&
5332     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5333
5334 check_header direct.h
5335 check_header dirent.h
5336 check_header dlfcn.h
5337 check_header d3d11.h
5338 check_header dxva.h
5339 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5340 check_header io.h
5341 check_header libcrystalhd/libcrystalhd_if.h
5342 check_header mach/mach_time.h
5343 check_header malloc.h
5344 check_header net/udplite.h
5345 check_header poll.h
5346 check_header sys/mman.h
5347 check_header sys/param.h
5348 check_header sys/resource.h
5349 check_header sys/select.h
5350 check_header sys/time.h
5351 check_header sys/un.h
5352 check_header termios.h
5353 check_header unistd.h
5354 check_header valgrind/valgrind.h
5355 check_header vdpau/vdpau.h
5356 check_header vdpau/vdpau_x11.h
5357 check_header VideoDecodeAcceleration/VDADecoder.h
5358 check_header VideoToolbox/VideoToolbox.h
5359 check_header windows.h
5360 check_header X11/extensions/XvMClib.h
5361 check_header asm/types.h
5362
5363 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5364 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5365 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5366 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5367
5368 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5369
5370 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5371 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5372 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5373 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5374 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5375
5376 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5377 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5378
5379 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5380
5381 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5382
5383 if ! disabled w32threads && ! enabled pthreads; then
5384     check_func_headers "windows.h process.h" _beginthreadex &&
5385         enable w32threads || disable w32threads
5386     if ! enabled w32threads && enabled winrt; then
5387         check_func_headers "windows.h" CreateThread &&
5388             enable w32threads || disable w32threads
5389     fi
5390 fi
5391
5392 # check for some common methods of building with pthread support
5393 # do this before the optional library checks as some of them require pthreads
5394 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5395     enable pthreads
5396     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5397         add_cflags -pthread
5398         add_extralibs -pthread
5399     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5400         add_cflags -pthreads
5401         add_extralibs -pthreads
5402     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5403         add_cflags -ldl -pthread
5404         add_extralibs -ldl -pthread
5405     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5406         add_extralibs -lpthreadGC2
5407     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5408         :
5409     elif ! check_func pthread_join && ! check_func pthread_create; then
5410         disable pthreads
5411     fi
5412     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5413 fi
5414
5415
5416 if enabled pthreads; then
5417   check_func pthread_cancel
5418 fi
5419
5420 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5421 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5422 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5423
5424 check_lib math.h sin -lm && LIBM="-lm"
5425 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5426
5427 atan2f_args=2
5428 copysign_args=2
5429 hypot_args=2
5430 ldexpf_args=2
5431 powf_args=2
5432
5433 for func in $MATH_FUNCS; do
5434     eval check_mathfunc $func \${${func}_args:-1}
5435 done
5436
5437 for func in $COMPLEX_FUNCS; do
5438     eval check_complexfunc $func \${${func}_args:-1}
5439 done
5440
5441 # these are off by default, so fail if requested and not available
5442 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5443 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5444                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5445 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5446                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5447                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5448 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5449 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5450 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5451 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5452 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5453 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5454 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5455 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5456 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5457 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5458 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5459                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5460                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5461 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5462 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5463 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5464 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5465                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5466                                  warn "using libfdk without pkg-config"; } }
5467 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"
5468 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5469 enabled fontconfig        && enable libfontconfig
5470 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5471 enabled libfreetype       && require_libfreetype
5472 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5473 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5474 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5475                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5476                                done || die "ERROR: libgsm not found"; }
5477 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5478 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5479 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5480 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5481 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5482 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5483 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5484 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5485 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5486                                require_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5487                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5488 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5489 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5490                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5491                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5492                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5493                                die "ERROR: libopenjpeg not found"; }
5494 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5495 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5496 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5497 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5498 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5499 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5500 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5501                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5502 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5503 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5504 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5505 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5506 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5507 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5508 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5509                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5510                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5511 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5512 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5513 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5514 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5515 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5516
5517 enabled libvpx            && {
5518     enabled libvpx_vp8_decoder && {
5519         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5520             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5521                 die "ERROR: libvpx decoder version must be >=0.9.1";
5522     }
5523     enabled libvpx_vp8_encoder && {
5524         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5525             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5526                 die "ERROR: libvpx encoder version must be >=0.9.7";
5527     }
5528     enabled libvpx_vp9_decoder && {
5529         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5530             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5531                 disable libvpx_vp9_decoder;
5532     }
5533     enabled libvpx_vp9_encoder && {
5534         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5535             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5536                 disable libvpx_vp9_encoder;
5537     }
5538     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5539         die "libvpx enabled but no supported decoders found"
5540     fi
5541 }
5542
5543 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5544 enabled libwebp           && {
5545     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5546     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5547 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5548                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5549                                  warn "using libx264 without pkg-config"; } } &&
5550                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5551                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5552                              { check_cpp_condition x264.h "X264_MPEG2" &&
5553                                enable libx262; }
5554 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5555                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5556                                die "ERROR: libx265 version must be >= 68."; }
5557 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5558 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5559 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5560 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5561 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5562                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5563                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5564 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5565                                 { ! enabled cross_compile && {
5566                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5567                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5568                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5569                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5570                                die "ERROR: mmal not found"; }
5571 enabled mmal &&
5572     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5573      die "ERROR: mmal firmware headers too old")
5574
5575 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5576 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5577                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5578                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5579                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5580 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5581                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5582                                die "ERROR: openal not found"; } &&
5583                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5584                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5585 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5586                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5587                                die "ERROR: opencl not found"; } &&
5588                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5589                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5590                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5591 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5592                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5593                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5594                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5595                                die "ERROR: opengl not found."
5596                              }
5597 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5598                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5599                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5600                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5601                                die "ERROR: openssl not found"; }
5602 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5603
5604 # libdc1394 check
5605 if enabled libdc1394; then
5606     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5607         enable libdc1394_2; } ||
5608     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5609         enable libdc1394_1; } ||
5610     die "ERROR: No version of libdc1394 found "
5611 fi
5612
5613 if enabled gcrypt; then
5614     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5615     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5616         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5617         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5618         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5619             die "ERROR: gcrypt not found"
5620         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5621     else
5622         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5623     fi
5624 fi
5625
5626 if ! disabled sdl; then
5627     SDL_CONFIG="${cross_prefix}sdl-config"
5628     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5629         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5630         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5631         enable sdl
5632     else
5633         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5634             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5635             sdl_libs=$("${SDL_CONFIG}" --libs)
5636             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5637             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5638             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5639             enable sdl
5640         elif enabled sdl ; then
5641             die "ERROR: SDL not found"
5642         else
5643             disable sdl
5644         fi
5645     fi
5646     if test $target_os = "mingw32"; then
5647         sdl_libs="$sdl_libs -mconsole"
5648     fi
5649 fi
5650 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5651
5652 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5653     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5654     enable securetransport; }
5655
5656 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5657                        enable schannel && add_extralibs -lSecur32; }
5658
5659 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5660 enabled makeinfo \
5661     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5662     && enable makeinfo_html || disable makeinfo_html
5663 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5664 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5665 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5666 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5667
5668 check_header linux/fb.h
5669 check_header linux/videodev.h
5670 check_header linux/videodev2.h
5671 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5672
5673 check_header sys/videoio.h
5674 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5675
5676 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5677 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5678 # w32api 3.12 had it defined wrong
5679 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5680
5681 check_type "dshow.h" IBaseFilter
5682
5683 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5684 { check_header dev/bktr/ioctl_meteor.h &&
5685   check_header dev/bktr/ioctl_bt848.h; } ||
5686 { check_header machine/ioctl_meteor.h &&
5687   check_header machine/ioctl_bt848.h; } ||
5688 { check_header dev/video/meteor/ioctl_meteor.h &&
5689   check_header dev/video/bktr/ioctl_bt848.h; } ||
5690 check_header dev/ic/bt8xx.h
5691
5692 check_header sndio.h
5693 if check_struct sys/soundcard.h audio_buf_info bytes; then
5694     enable_safe sys/soundcard.h
5695 else
5696     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5697     #include <sys/soundcard.h>
5698     audio_buf_info abc;
5699 EOF
5700 fi
5701 check_header soundcard.h
5702
5703 enabled_any alsa_indev alsa_outdev &&
5704     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5705
5706 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5707     check_func jack_port_get_latency_range -ljack
5708
5709 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5710
5711 if enabled libcdio; then
5712     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5713     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5714     die "ERROR: No usable libcdio/cdparanoia found"
5715 fi
5716
5717 enabled xlib &&
5718     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5719
5720 if ! disabled libxcb; then
5721     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5722         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5723     } && disable x11grab && enable libxcb
5724
5725 if enabled libxcb; then
5726     disabled libxcb_shm || {
5727         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5728             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5729         } && check_header sys/shm.h && enable libxcb_shm; }
5730
5731     disabled libxcb_xfixes || {
5732         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5733             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5734         } && enable libxcb_xfixes; }
5735
5736     disabled libxcb_shape || {
5737         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5738             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5739         } && enable libxcb_shape; }
5740
5741     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5742     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5743 fi
5744 fi
5745
5746 if enabled x11grab; then
5747     enabled xlib || die "ERROR: Xlib not found"
5748     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5749     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5750 fi
5751
5752 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5753
5754 enabled dxva2api_h &&
5755     check_cc <<EOF && enable dxva2api_cobj
5756 #define _WIN32_WINNT 0x0600
5757 #define COBJMACROS
5758 #include <windows.h>
5759 #include <d3d9.h>
5760 #include <dxva2api.h>
5761 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5762 EOF
5763
5764 enabled vaapi &&
5765     check_lib va/va.h vaInitialize -lva ||
5766     disable vaapi
5767
5768 enabled vaapi && enabled xlib &&
5769     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5770     enable vaapi_x11
5771
5772 enabled vdpau &&
5773     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5774     disable vdpau
5775
5776 enabled vdpau && enabled xlib &&
5777     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5778     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5779     enable vdpau_x11
5780
5781 # Funny iconv installations are not unusual, so check it after all flags have been set
5782 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5783
5784 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5785
5786 # add some useful compiler flags if supported
5787 check_cflags -Wdeclaration-after-statement
5788 check_cflags -Wall
5789 check_cflags -Wdisabled-optimization
5790 check_cflags -Wpointer-arith
5791 check_cflags -Wredundant-decls
5792 check_cflags -Wwrite-strings
5793 check_cflags -Wtype-limits
5794 check_cflags -Wundef
5795 check_cflags -Wmissing-prototypes
5796 check_cflags -Wno-pointer-to-int-cast
5797 check_cflags -Wstrict-prototypes
5798 check_cflags -Wempty-body
5799 enabled extra_warnings && check_cflags -Winline
5800 enabled extra_warnings && check_cflags -Wcast-qual
5801
5802 check_disable_warning(){
5803     warning_flag=-W${1#-Wno-}
5804     test_cflags $warning_flag && add_cflags $1
5805 }
5806
5807 check_disable_warning -Wno-parentheses
5808 check_disable_warning -Wno-switch
5809 check_disable_warning -Wno-format-zero-length
5810 check_disable_warning -Wno-pointer-sign
5811 check_disable_warning -Wno-unused-const-variable
5812
5813 # add some linker flags
5814 check_ldflags -Wl,--warn-common
5815 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5816 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5817 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5818 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5819
5820 # add some strip flags
5821 # -wN '..@*' is more selective than -x, but not available everywhere.
5822 check_stripflags -wN \'..@*\' || check_stripflags -x
5823
5824 enabled neon_clobber_test &&
5825     check_ldflags -Wl,--wrap,avcodec_open2              \
5826                   -Wl,--wrap,avcodec_decode_audio4      \
5827                   -Wl,--wrap,avcodec_decode_video2      \
5828                   -Wl,--wrap,avcodec_decode_subtitle2   \
5829                   -Wl,--wrap,avcodec_encode_audio2      \
5830                   -Wl,--wrap,avcodec_encode_video2      \
5831                   -Wl,--wrap,avcodec_encode_subtitle    \
5832                   -Wl,--wrap,swr_convert                \
5833                   -Wl,--wrap,avresample_convert ||
5834     disable neon_clobber_test
5835
5836 enabled xmm_clobber_test &&
5837     check_ldflags -Wl,--wrap,avcodec_open2              \
5838                   -Wl,--wrap,avcodec_decode_audio4      \
5839                   -Wl,--wrap,avcodec_decode_video2      \
5840                   -Wl,--wrap,avcodec_decode_subtitle2   \
5841                   -Wl,--wrap,avcodec_encode_audio2      \
5842                   -Wl,--wrap,avcodec_encode_video2      \
5843                   -Wl,--wrap,avcodec_encode_subtitle    \
5844                   -Wl,--wrap,swr_convert                \
5845                   -Wl,--wrap,avresample_convert         \
5846                   -Wl,--wrap,sws_scale ||
5847     disable xmm_clobber_test
5848
5849 echo "X { local: *; };" > $TMPV
5850 if test_ldflags -Wl,--version-script,$TMPV; then
5851     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5852 elif test_ldflags -Wl,-M,$TMPV; then
5853     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5854 fi
5855
5856 check_cc <<EOF && enable symver_asm_label
5857 void ff_foo(void) __asm__ ("av_foo@VERSION");
5858 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5859 EOF
5860     check_cc <<EOF && enable symver_gnu_asm
5861 __asm__(".symver ff_foo,av_foo@VERSION");
5862 void ff_foo(void) {}
5863 EOF
5864
5865 if [ -z "$optflags" ]; then
5866     if enabled small; then
5867         optflags=$cflags_size
5868     elif enabled optimizations; then
5869         optflags=$cflags_speed
5870     else
5871         optflags=$cflags_noopt
5872     fi
5873 fi
5874
5875 check_optflags(){
5876     check_cflags "$@"
5877     enabled lto && check_ldflags "$@"
5878 }
5879
5880
5881 if enabled lto; then
5882     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5883     check_cflags  -flto
5884     check_ldflags -flto $cpuflags
5885     disable inline_asm_direct_symbol_refs
5886 fi
5887
5888 check_optflags $optflags
5889 check_optflags -fno-math-errno
5890 check_optflags -fno-signed-zeros
5891
5892 enabled ftrapv && check_cflags -ftrapv
5893
5894 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5895 int x;
5896 EOF
5897
5898
5899 if enabled icc; then
5900     # Just warnings, no remarks
5901     check_cflags -w1
5902     # -wd: Disable following warnings
5903     # 144, 167, 556: -Wno-pointer-sign
5904     # 188: enumerated type mixed with another type
5905     # 1292: attribute "foo" ignored
5906     # 1419: external declaration in primary source file
5907     # 10006: ignoring unknown option -fno-signed-zeros
5908     # 10148: ignoring unknown option -Wno-parentheses
5909     # 10156: ignoring option '-W'; no argument required
5910     # 13200: No EMMS instruction before call to function
5911     # 13203: No EMMS instruction before return from function
5912     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5913     # 11030: Warning unknown option --as-needed
5914     # 10156: ignoring option '-export'; no argument required
5915     check_ldflags -wd10156,11030
5916     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5917     enable ebp_available
5918     # The test above does not test linking
5919     enabled lto && disable symver_asm_label
5920     if enabled x86_32; then
5921         icc_version=$($cc -dumpversion)
5922         test ${icc_version%%.*} -ge 11 &&
5923             check_cflags -falign-stack=maintain-16-byte ||
5924             disable aligned_stack
5925     fi
5926 elif enabled ccc; then
5927     # disable some annoying warnings
5928     add_cflags -msg_disable bitnotint
5929     add_cflags -msg_disable mixfuncvoid
5930     add_cflags -msg_disable nonstandcast
5931     add_cflags -msg_disable unsupieee
5932 elif enabled gcc; then
5933     case $gcc_basever in
5934         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
5935         4.*)                 check_optflags -fno-tree-vectorize ;;
5936         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
5937     esac
5938     check_cflags -Werror=format-security
5939     check_cflags -Werror=implicit-function-declaration
5940     check_cflags -Werror=missing-prototypes
5941     check_cflags -Werror=return-type
5942     check_cflags -Werror=vla
5943     check_cflags -Wformat
5944     check_cflags -fdiagnostics-color=auto
5945     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5946 elif enabled llvm_gcc; then
5947     check_cflags -mllvm -stack-alignment=16
5948 elif enabled clang; then
5949     check_cflags -mllvm -stack-alignment=16
5950     check_cflags -Qunused-arguments
5951     check_cflags -Werror=implicit-function-declaration
5952     check_cflags -Werror=missing-prototypes
5953     check_cflags -Werror=return-type
5954 elif enabled cparser; then
5955     add_cflags -Wno-missing-variable-declarations
5956     add_cflags -Wno-empty-statement
5957 elif enabled armcc; then
5958     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5959     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5960     # 2523: use of inline assembly is deprecated
5961     add_cflags -W${armcc_opt},--diag_suppress=2523
5962     add_cflags -W${armcc_opt},--diag_suppress=1207
5963     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5964     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5965     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5966     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5967 elif enabled tms470; then
5968     add_cflags -pds=824 -pds=837
5969     disable inline_asm
5970 elif enabled pathscale; then
5971     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5972 elif enabled_any msvc icl; then
5973     enabled x86_32 && disable aligned_stack
5974     enabled_all x86_32 debug && add_cflags -Oy-
5975     enabled debug && add_ldflags -debug
5976     enable pragma_deprecated
5977     if enabled icl; then
5978         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5979         # (correctly) on icl 13.x.
5980         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5981             add_cflags -Qansi-alias
5982         # Some inline asm is not compilable in debug
5983         if enabled debug; then
5984             disable ebp_available
5985             disable ebx_available
5986         fi
5987     fi
5988     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5989     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5990     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5991     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5992     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5993     # MSVC 2013 and newer can handle it fine.
5994     # If this declspec fails, force including stdlib.h before the restrict redefinition
5995     # happens in config.h.
5996     if [ $_restrict != restrict ]; then
5997         check_cc <<EOF || add_cflags -FIstdlib.h
5998 __declspec($_restrict) void* foo(int);
5999 EOF
6000     fi
6001     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6002 fi
6003
6004 for pfx in "" host_; do
6005     varname=${pfx%_}cc_type
6006     eval "type=\$$varname"
6007     if [ $type = "msvc" ]; then
6008         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6009 static inline int foo(int a) { return a; }
6010 EOF
6011     fi
6012 done
6013
6014 case $as_type in
6015     clang)
6016         add_asflags -Qunused-arguments
6017     ;;
6018 esac
6019
6020 case $ld_type in
6021     clang)
6022         check_ldflags -Qunused-arguments
6023     ;;
6024 esac
6025
6026 case $target_os in
6027     osf1)
6028         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6029     ;;
6030     plan9)
6031         add_cppflags -Dmain=plan9_main
6032     ;;
6033 esac
6034
6035 enable frame_thread_encoder
6036
6037 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6038
6039 check_deps $CONFIG_LIST       \
6040            $CONFIG_EXTRA      \
6041            $HAVE_LIST         \
6042            $ALL_COMPONENTS    \
6043
6044 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"
6045
6046
6047 if test $target_os = "haiku"; then
6048     disable memalign
6049     disable posix_memalign
6050 fi
6051
6052 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6053     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6054     enable dxva2_lib
6055
6056 ! enabled_any memalign posix_memalign aligned_malloc &&
6057     enabled simd_align_16 && enable memalign_hack
6058
6059 # add_dep lib dep
6060 # -> enable ${lib}_deps_${dep}
6061 # -> add $dep to ${lib}_deps only once
6062 add_dep() {
6063     lib=$1
6064     dep=$2
6065     enabled "${lib}_deps_${dep}" && return 0
6066     enable  "${lib}_deps_${dep}"
6067     prepend "${lib}_deps" $dep
6068 }
6069
6070 # merge deps lib components
6071 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6072 merge_deps() {
6073     lib=$1
6074     shift
6075     for comp in $*; do
6076         enabled $comp || continue
6077         eval "dep=\"\$${comp}_deps\""
6078         for d in $dep; do
6079             add_dep $lib $d
6080         done
6081     done
6082 }
6083
6084 merge_deps libavfilter $FILTER_LIST
6085
6086 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6087
6088 for thread in $THREADS_LIST; do
6089     if enabled $thread; then
6090         test -n "$thread_type" &&
6091             die "ERROR: Only one thread type must be selected." ||
6092             thread_type="$thread"
6093     fi
6094 done
6095
6096 enabled zlib && add_cppflags -DZLIB_CONST
6097
6098 # conditional library dependencies, in linking order
6099 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6100 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6101 enabled aresample_filter    && prepend avfilter_deps "swresample"
6102 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6103 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6104 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6105 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6106 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6107 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6108 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6109 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6110 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6111 enabled pan_filter          && prepend avfilter_deps "swresample"
6112 enabled pp_filter           && prepend avfilter_deps "postproc"
6113 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6114 enabled resample_filter && prepend avfilter_deps "avresample"
6115 enabled sab_filter          && prepend avfilter_deps "swscale"
6116 enabled scale_filter    && prepend avfilter_deps "swscale"
6117 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6118 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6119 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6120 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6121 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6122 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6123 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6124 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6125 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6126
6127 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6128
6129 enabled opus_decoder    && prepend avcodec_deps "swresample"
6130
6131 expand_deps(){
6132     lib_deps=${1}_deps
6133     eval "deps=\$$lib_deps"
6134     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6135     unique $lib_deps
6136 }
6137
6138 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6139 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6140
6141 map 'expand_deps $v' $LIBRARY_LIST
6142
6143 echo "install prefix            $prefix"
6144 echo "source path               $source_path"
6145 echo "C compiler                $cc"
6146 echo "C library                 $libc_type"
6147 if test "$host_cc" != "$cc"; then
6148     echo "host C compiler           $host_cc"
6149     echo "host C library            $host_libc_type"
6150 fi
6151 echo "ARCH                      $arch ($cpu)"
6152 if test "$build_suffix" != ""; then
6153     echo "build suffix              $build_suffix"
6154 fi
6155 if test "$progs_suffix" != ""; then
6156     echo "progs suffix              $progs_suffix"
6157 fi
6158 if test "$extra_version" != ""; then
6159     echo "version string suffix     $extra_version"
6160 fi
6161 echo "big-endian                ${bigendian-no}"
6162 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6163 if enabled x86; then
6164     echo "${yasmexe}                      ${yasm-no}"
6165     echo "MMX enabled               ${mmx-no}"
6166     echo "MMXEXT enabled            ${mmxext-no}"
6167     echo "3DNow! enabled            ${amd3dnow-no}"
6168     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6169     echo "SSE enabled               ${sse-no}"
6170     echo "SSSE3 enabled             ${ssse3-no}"
6171     echo "AESNI enabled             ${aesni-no}"
6172     echo "AVX enabled               ${avx-no}"
6173     echo "XOP enabled               ${xop-no}"
6174     echo "FMA3 enabled              ${fma3-no}"
6175     echo "FMA4 enabled              ${fma4-no}"
6176     echo "i686 features enabled     ${i686-no}"
6177     echo "CMOV is fast              ${fast_cmov-no}"
6178     echo "EBX available             ${ebx_available-no}"
6179     echo "EBP available             ${ebp_available-no}"
6180 fi
6181 if enabled aarch64; then
6182     echo "NEON enabled              ${neon-no}"
6183     echo "VFP enabled               ${vfp-no}"
6184 fi
6185 if enabled arm; then
6186     echo "ARMv5TE enabled           ${armv5te-no}"
6187     echo "ARMv6 enabled             ${armv6-no}"
6188     echo "ARMv6T2 enabled           ${armv6t2-no}"
6189     echo "VFP enabled               ${vfp-no}"
6190     echo "NEON enabled              ${neon-no}"
6191     echo "THUMB enabled             ${thumb-no}"
6192 fi
6193 if enabled mips; then
6194     echo "MIPS FPU enabled          ${mipsfpu-no}"
6195     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6196     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6197     echo "MIPS MSA enabled          ${msa-no}"
6198     echo "LOONGSON MMI enabled      ${mmi-no}"
6199 fi
6200 if enabled ppc; then
6201     echo "AltiVec enabled           ${altivec-no}"
6202     echo "VSX enabled               ${vsx-no}"
6203     echo "POWER8 enabled            ${power8-no}"
6204     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6205     echo "dcbzl available           ${dcbzl-no}"
6206 fi
6207 echo "debug symbols             ${debug-no}"
6208 echo "strip symbols             ${stripping-no}"
6209 echo "optimize for size         ${small-no}"
6210 echo "optimizations             ${optimizations-no}"
6211 echo "static                    ${static-no}"
6212 echo "shared                    ${shared-no}"
6213 echo "postprocessing support    ${postproc-no}"
6214 echo "new filter support        ${avfilter-no}"
6215 echo "network support           ${network-no}"
6216 echo "threading support         ${thread_type-no}"
6217 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6218 echo "SDL support               ${sdl-no}"
6219 echo "opencl enabled            ${opencl-no}"
6220 echo "texi2html enabled         ${texi2html-no}"
6221 echo "perl enabled              ${perl-no}"
6222 echo "pod2man enabled           ${pod2man-no}"
6223 echo "makeinfo enabled          ${makeinfo-no}"
6224 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6225 test -n "$random_seed" &&
6226     echo "random seed               ${random_seed}"
6227 echo
6228
6229 echo "Enabled programs:"
6230 print_enabled '' $PROGRAM_LIST | print_in_columns
6231 echo
6232
6233 echo "External libraries:"
6234 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6235 echo
6236
6237 echo "Libraries:"
6238 print_enabled '' $LIBRARY_LIST | print_in_columns
6239 echo
6240
6241 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6242     echo "Enabled ${type}s:"
6243     eval list=\$$(toupper $type)_LIST
6244     print_enabled '_*' $list | print_in_columns
6245     echo
6246 done
6247
6248 license="LGPL version 2.1 or later"
6249 if enabled nonfree; then
6250     license="nonfree and unredistributable"
6251 elif enabled gplv3; then
6252     license="GPL version 3 or later"
6253 elif enabled lgplv3; then
6254     license="LGPL version 3 or later"
6255 elif enabled gpl; then
6256     license="GPL version 2 or later"
6257 fi
6258
6259 echo "License: $license"
6260
6261 echo "Creating config.mak, config.h, and doc/config.texi..."
6262
6263 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6264
6265 enabled stripping || strip="echo skipping strip"
6266
6267 config_files="$TMPH config.mak doc/config.texi"
6268
6269 cat > config.mak <<EOF
6270 # Automatically generated by configure - do not modify!
6271 ifndef FFMPEG_CONFIG_MAK
6272 FFMPEG_CONFIG_MAK=1
6273 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6274 prefix=$prefix
6275 LIBDIR=\$(DESTDIR)$libdir
6276 SHLIBDIR=\$(DESTDIR)$shlibdir
6277 INCDIR=\$(DESTDIR)$incdir
6278 BINDIR=\$(DESTDIR)$bindir
6279 DATADIR=\$(DESTDIR)$datadir
6280 DOCDIR=\$(DESTDIR)$docdir
6281 MANDIR=\$(DESTDIR)$mandir
6282 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6283 SRC_PATH=$source_path
6284 SRC_LINK=$source_link
6285 ifndef MAIN_MAKEFILE
6286 SRC_PATH:=\$(SRC_PATH:.%=..%)
6287 endif
6288 CC_IDENT=$cc_ident
6289 ARCH=$arch
6290 INTRINSICS=$intrinsics
6291 CC=$cc
6292 CXX=$cxx
6293 AS=$as
6294 OBJCC=$objcc
6295 LD=$ld
6296 DEPCC=$dep_cc
6297 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6298 DEPAS=$as
6299 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6300 YASM=$yasmexe
6301 DEPYASM=$yasmexe
6302 AR=$ar
6303 ARFLAGS=$arflags
6304 AR_O=$ar_o
6305 RANLIB=$ranlib
6306 STRIP=$strip
6307 CP=cp -p
6308 LN_S=$ln_s
6309 CPPFLAGS=$CPPFLAGS
6310 CFLAGS=$CFLAGS
6311 CXXFLAGS=$CXXFLAGS
6312 OBJCFLAGS=$OBJCFLAGS
6313 ASFLAGS=$ASFLAGS
6314 AS_C=$AS_C
6315 AS_O=$AS_O
6316 OBJCC_C=$OBJCC_C
6317 OBJCC_E=$OBJCC_E
6318 OBJCC_O=$OBJCC_O
6319 CC_C=$CC_C
6320 CC_E=$CC_E
6321 CC_O=$CC_O
6322 CXX_C=$CXX_C
6323 CXX_O=$CXX_O
6324 LD_O=$LD_O
6325 LD_LIB=$LD_LIB
6326 LD_PATH=$LD_PATH
6327 DLLTOOL=$dlltool
6328 WINDRES=$windres
6329 DEPWINDRES=$dep_cc
6330 DOXYGEN=$doxygen
6331 LDFLAGS=$LDFLAGS
6332 LDEXEFLAGS=$LDEXEFLAGS
6333 LDLIBFLAGS=$LDLIBFLAGS
6334 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6335 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6336 YASMFLAGS=$YASMFLAGS
6337 BUILDSUF=$build_suffix
6338 PROGSSUF=$progs_suffix
6339 FULLNAME=$FULLNAME
6340 LIBPREF=$LIBPREF
6341 LIBSUF=$LIBSUF
6342 LIBNAME=$LIBNAME
6343 SLIBPREF=$SLIBPREF
6344 SLIBSUF=$SLIBSUF
6345 EXESUF=$EXESUF
6346 EXTRA_VERSION=$extra_version
6347 CCDEP=$CCDEP
6348 CXXDEP=$CXXDEP
6349 CCDEP_FLAGS=$CCDEP_FLAGS
6350 ASDEP=$ASDEP
6351 ASDEP_FLAGS=$ASDEP_FLAGS
6352 CC_DEPFLAGS=$CC_DEPFLAGS
6353 AS_DEPFLAGS=$AS_DEPFLAGS
6354 HOSTCC=$host_cc
6355 HOSTLD=$host_ld
6356 HOSTCFLAGS=$host_cflags
6357 HOSTCPPFLAGS=$host_cppflags
6358 HOSTEXESUF=$HOSTEXESUF
6359 HOSTLDFLAGS=$host_ldflags
6360 HOSTLIBS=$host_libs
6361 DEPHOSTCC=$host_cc
6362 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6363 HOSTCCDEP=$HOSTCCDEP
6364 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6365 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6366 HOSTCC_C=$HOSTCC_C
6367 HOSTCC_O=$HOSTCC_O
6368 HOSTLD_O=$HOSTLD_O
6369 TARGET_EXEC=$target_exec $target_exec_args
6370 TARGET_PATH=$target_path
6371 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6372 CFLAGS-ffplay=$sdl_cflags
6373 ZLIB=$($ldflags_filter -lz)
6374 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6375 EXTRALIBS=$extralibs
6376 COMPAT_OBJS=$compat_objs
6377 EXEOBJS=$exeobjs
6378 INSTALL=$install
6379 LIBTARGET=${LIBTARGET}
6380 SLIBNAME=${SLIBNAME}
6381 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6382 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6383 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6384 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6385 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6386 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6387 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6388 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6389 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6390 NOREDZONE_FLAGS=$noredzone_flags
6391 EOF
6392
6393 get_version(){
6394     lcname=lib${1}
6395     name=$(toupper $lcname)
6396     file=$source_path/$lcname/version.h
6397     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6398     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6399     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6400     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6401     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6402     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6403 }
6404
6405 map 'get_version $v' $LIBRARY_LIST
6406
6407 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6408
6409 print_program_libs(){
6410     eval "program_libs=\$${1}_libs"
6411     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6412 }
6413
6414 map 'print_program_libs $v' $PROGRAM_LIST
6415
6416 cat > $TMPH <<EOF
6417 /* Automatically generated by configure - do not modify! */
6418 #ifndef FFMPEG_CONFIG_H
6419 #define FFMPEG_CONFIG_H
6420 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6421 #define FFMPEG_LICENSE "$(c_escape $license)"
6422 #define CONFIG_THIS_YEAR 2016
6423 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6424 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6425 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6426 #define av_restrict $_restrict
6427 #define EXTERN_PREFIX "${extern_prefix}"
6428 #define EXTERN_ASM ${extern_prefix}
6429 #define BUILDSUF "$build_suffix"
6430 #define SLIBSUF "$SLIBSUF"
6431 #define HAVE_MMX2 HAVE_MMXEXT
6432 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6433 EOF
6434
6435 test -n "$assert_level" &&
6436     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6437
6438 test -n "$malloc_prefix" &&
6439     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6440
6441 if enabled yasm; then
6442     append config_files $TMPASM
6443     printf '' >$TMPASM
6444 fi
6445
6446 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6447
6448
6449 mkdir -p doc
6450 mkdir -p tests
6451 mkdir -p tests/api
6452 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6453
6454 print_config ARCH_   "$config_files" $ARCH_LIST
6455 print_config HAVE_   "$config_files" $HAVE_LIST
6456 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6457                                      $CONFIG_EXTRA      \
6458                                      $ALL_COMPONENTS    \
6459
6460 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6461 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6462
6463 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6464 cp_if_changed $TMPH config.h
6465 touch .config
6466
6467 enabled yasm && cp_if_changed $TMPASM config.asm
6468
6469 cat > $TMPH <<EOF
6470 /* Generated by ffconf */
6471 #ifndef AVUTIL_AVCONFIG_H
6472 #define AVUTIL_AVCONFIG_H
6473 EOF
6474
6475 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6476
6477 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6478
6479 cp_if_changed $TMPH libavutil/avconfig.h
6480
6481 if test -n "$WARNINGS"; then
6482     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6483     enabled fatal_warnings && exit 1
6484 fi
6485
6486 # build pkg-config files
6487
6488 lib_version(){
6489     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6490 }
6491
6492 pkgconfig_generate(){
6493     name=$1
6494     shortname=${name#lib}${build_suffix}
6495     comment=$2
6496     version=$3
6497     libs=$4
6498     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6499     requires=${requires%, }
6500     enabled ${name#lib} || return 0
6501     mkdir -p $name
6502     cat <<EOF > $name/$name${build_suffix}.pc
6503 prefix=$prefix
6504 exec_prefix=\${prefix}
6505 libdir=$libdir
6506 includedir=$incdir
6507
6508 Name: $name
6509 Description: $comment
6510 Version: $version
6511 Requires: $(enabled shared || echo $requires)
6512 Requires.private: $(enabled shared && echo $requires)
6513 Conflicts:
6514 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6515 Libs.private: $(enabled shared && echo $libs)
6516 Cflags: -I\${includedir}
6517 EOF
6518
6519 mkdir -p doc/examples/pc-uninstalled
6520 includedir=${source_path}
6521 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6522     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6523 prefix=
6524 exec_prefix=
6525 libdir=\${pcfiledir}/../../../$name
6526 includedir=${includedir}
6527
6528 Name: $name
6529 Description: $comment
6530 Version: $version
6531 Requires: $requires
6532 Conflicts:
6533 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6534 Cflags: -I\${includedir}
6535 EOF
6536 }
6537
6538 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6539 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6540 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6541 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6542 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6543 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6544 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6545 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6546 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"