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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-d3d11va        disable D3D11VA code [autodetect]
 153   --disable-dxva2          disable DXVA2 code [autodetect]
 154   --disable-vaapi          disable VAAPI code [autodetect]
 155   --disable-vda            disable VDA code [autodetect]
 156   --disable-vdpau          disable VDPAU code [autodetect]
 157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 201   --enable-frei0r          enable frei0r video filtering [no]
 202   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 203                            if openssl, librtmp or gmp is not used [no]
 204   --enable-gmp             enable gmp, needed for rtmp(t)e support
 205                            if openssl or librtmp is not used [no]
 206   --enable-gnutls          enable gnutls, needed for https support
 207                            if openssl is not used [no]
 208   --disable-iconv          disable iconv [autodetect]
 209   --enable-ladspa          enable LADSPA audio filtering [no]
 210   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 211   --enable-libass          enable libass subtitles rendering,
 212                            needed for subtitles and ass filter [no]
 213   --enable-libbluray       enable BluRay reading using libbluray [no]
 214   --enable-libbs2b         enable bs2b DSP library [no]
 215   --enable-libcaca         enable textual display using libcaca [no]
 216   --enable-libcelt         enable CELT decoding via libcelt [no]
 217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 219                            and libraw1394 [no]
 220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 221   --enable-libfaac         enable AAC encoding via libfaac [no]
 222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 226   --enable-libgme          enable Game Music Emu via libgme [no]
 227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 231   --enable-libmfx          enable HW acceleration through libmfx
 232   --enable-libmodplug      enable ModPlug via libmodplug [no]
 233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 234   --enable-libnut          enable NUT (de)muxing via libnut,
 235                            native (de)muxer exists [no]
 236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 238   --enable-libopencv       enable video filtering via libopencv [no]
 239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 241   --enable-libopus         enable Opus de/encoding via libopus [no]
 242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 244   --enable-libquvi         enable quvi input via libquvi [no]
 245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 250   --enable-libsoxr         enable Include libsoxr resampling [no]
 251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 252   --enable-libssh          enable SFTP protocol via libssh [no]
 253   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 254   --enable-libtheora       enable Theora encoding via libtheora [no]
 255   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 256   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 260   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 261   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 262                            native implementation exists [no]
 263   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 264   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 265   --enable-libwebp         enable WebP encoding via libwebp [no]
 266   --enable-libx264         enable H.264 encoding via x264 [no]
 267   --enable-libx265         enable HEVC encoding via x265 [no]
 268   --enable-libxavs         enable AVS encoding via xavs [no]
 269   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 270   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 271   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 272   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 273   --enable-libxvid         enable Xvid encoding via xvidcore,
 274                            native MPEG-4/Xvid encoder exists [no]
 275   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 276   --enable-libzmq          enable message passing via libzmq [no]
 277   --enable-libzvbi         enable teletext support via libzvbi [no]
 278   --disable-lzma           disable lzma [autodetect]
 279   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 280   --enable-mmal            enable decoding via MMAL [no]
 281   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 282   --enable-nvenc           enable NVIDIA NVENC support [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl            disable sdl [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --enable-x11grab         enable X11 grabbing (legacy) [no]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297 Toolchain options:
 298   --arch=ARCH              select architecture [$arch]
 299   --cpu=CPU                select the minimum required CPU (affects
 300                            instruction selection, may crash on older CPUs)
 301   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 302   --progs-suffix=SUFFIX    program name suffix []
 303   --enable-cross-compile   assume a cross-compiler is used
 304   --sysroot=PATH           root of cross-build tree
 305   --sysinclude=PATH        location of cross-build system headers
 306   --target-os=OS           compiler targets OS [$target_os]
 307   --target-exec=CMD        command to run executables on target
 308   --target-path=DIR        path to view of build directory on target
 309   --target-samples=DIR     path to samples directory on target
 310   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 311   --toolchain=NAME         set tool defaults according to NAME
 312   --nm=NM                  use nm tool NM [$nm_default]
 313   --ar=AR                  use archive tool AR [$ar_default]
 314   --as=AS                  use assembler AS [$as_default]
 315   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 316   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 317   --cc=CC                  use C compiler CC [$cc_default]
 318   --cxx=CXX                use C compiler CXX [$cxx_default]
 319   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 320   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 321   --ld=LD                  use linker LD [$ld_default]
 322   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 323   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 324   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 325   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 326   --host-cc=HOSTCC         use host C compiler HOSTCC
 327   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 328   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 329   --host-ld=HOSTLD         use host linker HOSTLD
 330   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 331   --host-libs=HLIBS        use libs HLIBS when linking for host
 332   --host-os=OS             compiler host OS [$target_os]
 333   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 334   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 335   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 336   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 337   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 338   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 339   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 340   --extra-version=STRING   version string suffix []
 341   --optflags=OPTFLAGS      override optimization-related compiler flags
 342   --build-suffix=SUFFIX    library name suffix []
 343   --enable-pic             build position-independent code
 344   --enable-thumb           compile for Thumb instruction set
 345   --enable-lto             use link-time optimization
 346   --env="ENV=override"     override the environment variables
 347
 348 Advanced options (experts only):
 349   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 350   --custom-allocator=NAME  use a supported custom allocator
 351   --disable-symver         disable symbol versioning
 352   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 353   --disable-safe-bitstream-reader
 354                            disable buffer boundary checking in bitreaders
 355                            (faster, but may crash)
 356   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 357   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 358
 359 Optimization options (experts only):
 360   --disable-asm            disable all assembly optimizations
 361   --disable-altivec        disable AltiVec optimizations
 362   --disable-vsx            disable VSX optimizations
 363   --disable-power8         disable POWER8 optimizations
 364   --disable-amd3dnow       disable 3DNow! optimizations
 365   --disable-amd3dnowext    disable 3DNow! extended optimizations
 366   --disable-mmx            disable MMX optimizations
 367   --disable-mmxext         disable MMXEXT optimizations
 368   --disable-sse            disable SSE optimizations
 369   --disable-sse2           disable SSE2 optimizations
 370   --disable-sse3           disable SSE3 optimizations
 371   --disable-ssse3          disable SSSE3 optimizations
 372   --disable-sse4           disable SSE4 optimizations
 373   --disable-sse42          disable SSE4.2 optimizations
 374   --disable-avx            disable AVX optimizations
 375   --disable-xop            disable XOP optimizations
 376   --disable-fma3           disable FMA3 optimizations
 377   --disable-fma4           disable FMA4 optimizations
 378   --disable-avx2           disable AVX2 optimizations
 379   --disable-aesni          disable AESNI optimizations
 380   --disable-armv5te        disable armv5te optimizations
 381   --disable-armv6          disable armv6 optimizations
 382   --disable-armv6t2        disable armv6t2 optimizations
 383   --disable-vfp            disable VFP optimizations
 384   --disable-neon           disable NEON optimizations
 385   --disable-inline-asm     disable use of inline assembly
 386   --disable-yasm           disable use of nasm/yasm assembly
 387   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 388   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 389   --disable-msa            disable MSA optimizations
 390   --disable-mipsfpu        disable floating point MIPS optimizations
 391   --disable-mmi            disable Loongson SIMD optimizations
 392   --disable-fast-unaligned consider unaligned accesses slow
 393
 394 Developer options (useful when working on FFmpeg itself):
 395   --disable-debug          disable debugging symbols
 396   --enable-debug=LEVEL     set the debug level [$debuglevel]
 397   --disable-optimizations  disable compiler optimizations
 398   --enable-extra-warnings  enable more compiler warnings
 399   --disable-stripping      disable stripping of executables and shared libraries
 400   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 401                            2 causes a slowdown at runtime.
 402   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 403   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 404                            leaks and errors, using the specified valgrind binary.
 405                            Cannot be combined with --target-exec
 406   --enable-ftrapv          Trap arithmetic overflows
 407   --samples=PATH           location of test samples for FATE, if not set use
 408                            \$FATE_SAMPLES at make invocation time.
 409   --enable-neon-clobber-test check NEON registers for clobbering (should be
 410                            used only for debugging purposes)
 411   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 412                            should be used only for debugging purposes)
 413   --enable-random          randomly enable/disable components
 414   --disable-random
 415   --enable-random=LIST     randomly enable/disable specific components or
 416   --disable-random=LIST    component groups. LIST is a comma-separated list
 417                            of NAME[:PROB] entries where NAME is a component
 418                            (group) and PROB the probability associated with
 419                            NAME (default 0.5).
 420   --random-seed=VALUE      seed value for --enable/disable-random
 421   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 422                            (only applies to --disable-optimizations builds)
 423
 424 NOTE: Object files are built at the place where configure is launched.
 425 EOF
 426   exit 0
 427 }
 428
 429 quotes='""'
 430 if test -t 1 && which tput >/dev/null 2>&1; then
 431     ncolors=$(tput colors)
 432     if test -n "$ncolors" && test $ncolors -ge 8; then
 433         bold_color=$(tput bold)
 434         warn_color=$(tput setaf 3)
 435         error_color=$(tput setaf 1)
 436         reset_color=$(tput sgr0)
 437     fi
 438     # 72 used instead of 80 since that's the default of pr
 439     ncols=$(tput cols)
 440 fi
 441 : ${ncols:=72}
 442
 443 log(){
 444     echo "$@" >> $logfile
 445 }
 446
 447 log_file(){
 448     log BEGIN $1
 449     pr -n -t $1 >> $logfile
 450     log END $1
 451 }
 452
 453 warn(){
 454     log "WARNING: $*"
 455     WARNINGS="${WARNINGS}WARNING: $*\n"
 456 }
 457
 458 die(){
 459     log "$@"
 460     echo "$error_color$bold_color$@$reset_color"
 461     cat <<EOF
 462
 463 If you think configure made a mistake, make sure you are using the latest
 464 version from Git.  If the latest version fails, report the problem to the
 465 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 466 EOF
 467     if disabled logging; then
 468         cat <<EOF
 469 Rerun configure with logging enabled (do not use --disable-logging), and
 470 include the log this produces with your report.
 471 EOF
 472     else
 473         cat <<EOF
 474 Include the log file "$logfile" produced by configure as this will help
 475 solve the problem.
 476 EOF
 477     fi
 478     exit 1
 479 }
 480
 481 # Avoid locale weirdness, besides we really just want to translate ASCII.
 482 toupper(){
 483     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 484 }
 485
 486 tolower(){
 487     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 488 }
 489
 490 c_escape(){
 491     echo "$*" | sed 's/["\\]/\\\0/g'
 492 }
 493
 494 sh_quote(){
 495     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 496     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 497     echo "$v"
 498 }
 499
 500 cleanws(){
 501     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 502 }
 503
 504 filter(){
 505     pat=$1
 506     shift
 507     for v; do
 508         eval "case $v in $pat) echo $v ;; esac"
 509     done
 510 }
 511
 512 filter_out(){
 513     pat=$1
 514     shift
 515     for v; do
 516         eval "case $v in $pat) ;; *) echo $v ;; esac"
 517     done
 518 }
 519
 520 map(){
 521     m=$1
 522     shift
 523     for v; do eval $m; done
 524 }
 525
 526 add_suffix(){
 527     suffix=$1
 528     shift
 529     for v; do echo ${v}${suffix}; done
 530 }
 531
 532 set_all(){
 533     value=$1
 534     shift
 535     for var in $*; do
 536         eval $var=$value
 537     done
 538 }
 539
 540 set_weak(){
 541     value=$1
 542     shift
 543     for var; do
 544         eval : \${$var:=$value}
 545     done
 546 }
 547
 548 sanitize_var_name(){
 549     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 550 }
 551
 552 set_safe(){
 553     var=$1
 554     shift
 555     eval $(sanitize_var_name "$var")='$*'
 556 }
 557
 558 get_safe(){
 559     eval echo \$$(sanitize_var_name "$1")
 560 }
 561
 562 pushvar(){
 563     for pvar in $*; do
 564         eval level=\${${pvar}_level:=0}
 565         eval ${pvar}_${level}="\$$pvar"
 566         eval ${pvar}_level=$(($level+1))
 567     done
 568 }
 569
 570 popvar(){
 571     for pvar in $*; do
 572         eval level=\${${pvar}_level:-0}
 573         test $level = 0 && continue
 574         eval level=$(($level-1))
 575         eval $pvar="\${${pvar}_${level}}"
 576         eval ${pvar}_level=$level
 577         eval unset ${pvar}_${level}
 578     done
 579 }
 580
 581 enable(){
 582     set_all yes $*
 583 }
 584
 585 disable(){
 586     set_all no $*
 587 }
 588
 589 enable_weak(){
 590     set_weak yes $*
 591 }
 592
 593 disable_weak(){
 594     set_weak no $*
 595 }
 596
 597 enable_safe(){
 598     for var; do
 599         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 600     done
 601 }
 602
 603 disable_safe(){
 604     for var; do
 605         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 606     done
 607 }
 608
 609 do_enable_deep(){
 610     for var; do
 611         enabled $var && continue
 612         eval sel="\$${var}_select"
 613         eval sgs="\$${var}_suggest"
 614         pushvar var sgs
 615         enable_deep $sel
 616         popvar sgs
 617         enable_deep_weak $sgs
 618         popvar var
 619     done
 620 }
 621
 622 enable_deep(){
 623     do_enable_deep $*
 624     enable $*
 625 }
 626
 627 enable_deep_weak(){
 628     for var; do
 629         disabled $var && continue
 630         pushvar var
 631         do_enable_deep $var
 632         popvar var
 633         enable_weak $var
 634     done
 635 }
 636
 637 enabled(){
 638     test "${1#!}" = "$1" && op='=' || op=!=
 639     eval test "x\$${1#!}" $op "xyes"
 640 }
 641
 642 disabled(){
 643     test "${1#!}" = "$1" && op='=' || op=!=
 644     eval test "x\$${1#!}" $op "xno"
 645 }
 646
 647 enabled_all(){
 648     for opt; do
 649         enabled $opt || return 1
 650     done
 651 }
 652
 653 disabled_all(){
 654     for opt; do
 655         disabled $opt || return 1
 656     done
 657 }
 658
 659 enabled_any(){
 660     for opt; do
 661         enabled $opt && return 0
 662     done
 663 }
 664
 665 disabled_any(){
 666     for opt; do
 667         disabled $opt && return 0
 668     done
 669     return 1
 670 }
 671
 672 set_default(){
 673     for opt; do
 674         eval : \${$opt:=\$${opt}_default}
 675     done
 676 }
 677
 678 is_in(){
 679     value=$1
 680     shift
 681     for var in $*; do
 682         [ $var = $value ] && return 0
 683     done
 684     return 1
 685 }
 686
 687 do_check_deps(){
 688     for cfg; do
 689         cfg="${cfg#!}"
 690         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 691         disabled ${cfg}_checking && continue
 692         enable ${cfg}_checking
 693         append allopts $cfg
 694
 695         eval dep_all="\$${cfg}_deps"
 696         eval dep_any="\$${cfg}_deps_any"
 697         eval dep_sel="\$${cfg}_select"
 698         eval dep_sgs="\$${cfg}_suggest"
 699         eval dep_ifa="\$${cfg}_if"
 700         eval dep_ifn="\$${cfg}_if_any"
 701
 702         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 703         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 704         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 705
 706         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 707         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 708         enabled_all  $dep_all || disable $cfg
 709         enabled_any  $dep_any || disable $cfg
 710         disabled_any $dep_sel && disable $cfg
 711
 712         if enabled $cfg; then
 713             enable_deep $dep_sel
 714             enable_deep_weak $dep_sgs
 715         fi
 716
 717         disable ${cfg}_checking
 718     done
 719 }
 720
 721 check_deps(){
 722     unset allopts
 723
 724     do_check_deps "$@"
 725
 726     for cfg in $allopts; do
 727         enabled $cfg || continue
 728         eval dep_extralibs="\$${cfg}_extralibs"
 729         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 730     done
 731 }
 732
 733 print_config(){
 734     pfx=$1
 735     files=$2
 736     shift 2
 737     map 'eval echo "$v \${$v:-no}"' "$@" |
 738     awk "BEGIN { split(\"$files\", files) }
 739         {
 740             c = \"$pfx\" toupper(\$1);
 741             v = \$2;
 742             sub(/yes/, 1, v);
 743             sub(/no/,  0, v);
 744             for (f in files) {
 745                 file = files[f];
 746                 if (file ~ /\\.h\$/) {
 747                     printf(\"#define %s %d\\n\", c, v) >>file;
 748                 } else if (file ~ /\\.asm\$/) {
 749                     printf(\"%%define %s %d\\n\", c, v) >>file;
 750                 } else if (file ~ /\\.mak\$/) {
 751                     n = -v ? \"\" : \"!\";
 752                     printf(\"%s%s=yes\\n\", n, c) >>file;
 753                 } else if (file ~ /\\.texi\$/) {
 754                     pre = -v ? \"\" : \"@c \";
 755                     yesno = \$2;
 756                     c2 = tolower(c);
 757                     gsub(/_/, \"-\", c2);
 758                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 759                 }
 760             }
 761         }"
 762 }
 763
 764 print_enabled(){
 765     suf=$1
 766     shift
 767     for v; do
 768         enabled $v && printf "%s\n" ${v%$suf};
 769     done
 770 }
 771
 772 append(){
 773     var=$1
 774     shift
 775     eval "$var=\"\$$var $*\""
 776 }
 777
 778 prepend(){
 779     var=$1
 780     shift
 781     eval "$var=\"$* \$$var\""
 782 }
 783
 784 unique(){
 785     var=$1
 786     uniq_list=""
 787     for tok in $(eval echo \$$var); do
 788         uniq_list="$(filter_out $tok $uniq_list) $tok"
 789     done
 790     eval "$var=\"${uniq_list}\""
 791 }
 792
 793 add_cppflags(){
 794     append CPPFLAGS "$@"
 795 }
 796
 797 add_cflags(){
 798     append CFLAGS $($cflags_filter "$@")
 799 }
 800
 801 add_cxxflags(){
 802     append CXXFLAGS $($cflags_filter "$@")
 803 }
 804
 805 add_asflags(){
 806     append ASFLAGS $($asflags_filter "$@")
 807 }
 808
 809 add_objcflags(){
 810     append OBJCFLAGS $($objcflags_filter "$@")
 811 }
 812
 813 add_ldflags(){
 814     append LDFLAGS $($ldflags_filter "$@")
 815 }
 816
 817 add_ldexeflags(){
 818     append LDEXEFLAGS $($ldflags_filter "$@")
 819 }
 820
 821 add_ldlibflags(){
 822     append LDLIBFLAGS $($ldflags_filter "$@")
 823 }
 824
 825 add_stripflags(){
 826     append ASMSTRIPFLAGS "$@"
 827 }
 828
 829 add_extralibs(){
 830     prepend extralibs $($ldflags_filter "$@")
 831 }
 832
 833 add_host_cppflags(){
 834     append host_cppflags "$@"
 835 }
 836
 837 add_host_cflags(){
 838     append host_cflags $($host_cflags_filter "$@")
 839 }
 840
 841 add_host_ldflags(){
 842     append host_ldflags $($host_ldflags_filter "$@")
 843 }
 844
 845 add_compat(){
 846     append compat_objs $1
 847     shift
 848     map 'add_cppflags -D$v' "$@"
 849 }
 850
 851 check_cmd(){
 852     log "$@"
 853     "$@" >> $logfile 2>&1
 854 }
 855
 856 check_stat(){
 857     log check_stat "$@"
 858     stat "$1" >> $logfile 2>&1
 859 }
 860
 861 cc_o(){
 862     eval printf '%s\\n' $CC_O
 863 }
 864
 865 cc_e(){
 866     eval printf '%s\\n' $CC_E
 867 }
 868
 869 check_cc(){
 870     log check_cc "$@"
 871     cat > $TMPC
 872     log_file $TMPC
 873     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 874 }
 875
 876 check_cxx(){
 877     log check_cxx "$@"
 878     cat > $TMPCPP
 879     log_file $TMPCPP
 880     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 881 }
 882
 883 check_objcc(){
 884     log check_objcc "$@"
 885     cat > $TMPM
 886     log_file $TMPM
 887     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 888 }
 889
 890 check_cpp(){
 891     log check_cpp "$@"
 892     cat > $TMPC
 893     log_file $TMPC
 894     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 895 }
 896
 897 as_o(){
 898     eval printf '%s\\n' $AS_O
 899 }
 900
 901 check_as(){
 902     log check_as "$@"
 903     cat > $TMPS
 904     log_file $TMPS
 905     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 906 }
 907
 908 check_inline_asm(){
 909     log check_inline_asm "$@"
 910     name="$1"
 911     code="$2"
 912     shift 2
 913     disable $name
 914     check_cc "$@" <<EOF && enable $name
 915 void foo(void){ __asm__ volatile($code); }
 916 EOF
 917 }
 918
 919 check_insn(){
 920     log check_insn "$@"
 921     check_inline_asm ${1}_inline "\"$2\""
 922     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 923 }
 924
 925 check_yasm(){
 926     log check_yasm "$@"
 927     echo "$1" > $TMPS
 928     log_file $TMPS
 929     shift 1
 930     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 931 }
 932
 933 ld_o(){
 934     eval printf '%s\\n' $LD_O
 935 }
 936
 937 check_ld(){
 938     log check_ld "$@"
 939     type=$1
 940     shift 1
 941     flags=$(filter_out '-l*|*.so' $@)
 942     libs=$(filter '-l*|*.so' $@)
 943     check_$type $($cflags_filter $flags) || return
 944     flags=$($ldflags_filter $flags)
 945     libs=$($ldflags_filter $libs)
 946     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 947 }
 948
 949 print_include(){
 950     hdr=$1
 951     test "${hdr%.h}" = "${hdr}" &&
 952         echo "#include $hdr"    ||
 953         echo "#include <$hdr>"
 954 }
 955
 956 check_code(){
 957     log check_code "$@"
 958     check=$1
 959     headers=$2
 960     code=$3
 961     shift 3
 962     {
 963         for hdr in $headers; do
 964             print_include $hdr
 965         done
 966         echo "int main(void) { $code; return 0; }"
 967     } | check_$check "$@"
 968 }
 969
 970 check_cppflags(){
 971     log check_cppflags "$@"
 972     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 973 int x;
 974 EOF
 975 }
 976
 977 test_cflags(){
 978     log test_cflags "$@"
 979     set -- $($cflags_filter "$@")
 980     check_cc "$@" <<EOF
 981 int x;
 982 EOF
 983 }
 984
 985 check_cflags(){
 986     log check_cflags "$@"
 987     test_cflags "$@" && add_cflags "$@"
 988 }
 989
 990 check_cxxflags(){
 991     log check_cxxflags "$@"
 992     set -- $($cflags_filter "$@")
 993     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 994 int x;
 995 EOF
 996 }
 997
 998 test_objcflags(){
 999     log test_cflags "$@"
1000     set -- $($cflags_filter "$@")
1001     check_objcc "$@" <<EOF
1002 int x;
1003 EOF
1004 }
1005
1006 check_objcflags(){
1007     log check_cflags "$@"
1008     test_objcflags "$@" && add_objcflags "$@"
1009 }
1010
1011 test_ldflags(){
1012     log test_ldflags "$@"
1013     check_ld "cc" "$@" <<EOF
1014 int main(void){ return 0; }
1015 EOF
1016 }
1017
1018 check_ldflags(){
1019     log check_ldflags "$@"
1020     test_ldflags "$@" && add_ldflags "$@"
1021 }
1022
1023 test_stripflags(){
1024     log test_stripflags "$@"
1025     # call check_cc to get a fresh TMPO
1026     check_cc <<EOF
1027 int main(void) { return 0; }
1028 EOF
1029     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1030 }
1031
1032 check_stripflags(){
1033     log check_stripflags "$@"
1034     test_stripflags "$@" && add_stripflags "$@"
1035 }
1036
1037 check_header(){
1038     log check_header "$@"
1039     header=$1
1040     shift
1041     disable_safe $header
1042     check_cpp "$@" <<EOF && enable_safe $header
1043 #include <$header>
1044 int x;
1045 EOF
1046 }
1047
1048 check_header_objcc(){
1049     log check_header_objcc "$@"
1050     rm -f -- "$TMPO"
1051     header=$1
1052     shift
1053     disable_safe $header
1054     {
1055        echo "#include <$header>"
1056        echo "int main(void) { return 0; }"
1057     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1058 }
1059
1060 check_func(){
1061     log check_func "$@"
1062     func=$1
1063     shift
1064     disable $func
1065     check_ld "cc" "$@" <<EOF && enable $func
1066 extern int $func();
1067 int main(void){ $func(); }
1068 EOF
1069 }
1070
1071 check_complexfunc(){
1072     log check_complexfunc "$@"
1073     func=$1
1074     narg=$2
1075     shift 2
1076     test $narg = 2 && args="f, g" || args="f * I"
1077     disable $func
1078     check_ld "cc" "$@" <<EOF && enable $func
1079 #include <complex.h>
1080 #include <math.h>
1081 float foo(complex float f, complex float g) { return $func($args); }
1082 int main(void){ return (int) foo; }
1083 EOF
1084 }
1085
1086 check_mathfunc(){
1087     log check_mathfunc "$@"
1088     func=$1
1089     narg=$2
1090     shift 2
1091     test $narg = 2 && args="f, g" || args="f"
1092     disable $func
1093     check_ld "cc" "$@" <<EOF && enable $func
1094 #include <math.h>
1095 float foo(float f, float g) { return $func($args); }
1096 int main(void){ return (int) foo; }
1097 EOF
1098 }
1099
1100 check_func_headers(){
1101     log check_func_headers "$@"
1102     headers=$1
1103     funcs=$2
1104     shift 2
1105     {
1106         for hdr in $headers; do
1107             print_include $hdr
1108         done
1109         for func in $funcs; do
1110             echo "long check_$func(void) { return (long) $func; }"
1111         done
1112         echo "int main(void) { return 0; }"
1113     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1114 }
1115
1116 check_class_headers_cpp(){
1117     log check_class_headers_cpp "$@"
1118     headers=$1
1119     classes=$2
1120     shift 2
1121     {
1122         for hdr in $headers; do
1123             echo "#include <$hdr>"
1124         done
1125         echo "int main(void) { "
1126         i=1
1127         for class in $classes; do
1128             echo "$class obj$i;"
1129             i=$(expr $i + 1)
1130         done
1131         echo "return 0; }"
1132     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1133 }
1134
1135 check_cpp_condition(){
1136     log check_cpp_condition "$@"
1137     header=$1
1138     condition=$2
1139     shift 2
1140     check_cpp "$@" <<EOF
1141 #include <$header>
1142 #if !($condition)
1143 #error "unsatisfied condition: $condition"
1144 #endif
1145 EOF
1146 }
1147
1148 check_lib(){
1149     log check_lib "$@"
1150     header="$1"
1151     func="$2"
1152     shift 2
1153     check_header $header && check_func $func "$@" && add_extralibs "$@"
1154 }
1155
1156 check_lib2(){
1157     log check_lib2 "$@"
1158     headers="$1"
1159     funcs="$2"
1160     shift 2
1161     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1162 }
1163
1164 check_lib_cpp(){
1165     log check_lib_cpp "$@"
1166     headers="$1"
1167     classes="$2"
1168     shift 2
1169     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1170 }
1171
1172 check_pkg_config(){
1173     log check_pkg_config "$@"
1174     pkgandversion="$1"
1175     pkg="${1%% *}"
1176     headers="$2"
1177     funcs="$3"
1178     shift 3
1179     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1180     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1181     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1182     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1183         set_safe "${pkg}_cflags" $pkg_cflags   &&
1184         set_safe "${pkg}_libs"   $pkg_libs
1185 }
1186
1187 check_exec(){
1188     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1189 }
1190
1191 check_exec_crash(){
1192     code=$(cat)
1193
1194     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1195     # are safe but may not be available everywhere.  Thus we use
1196     # raise(SIGTERM) instead.  The check is run in a subshell so we
1197     # can redirect the "Terminated" message from the shell.  SIGBUS
1198     # is not defined by standard C so it is used conditionally.
1199
1200     (check_exec "$@") >> $logfile 2>&1 <<EOF
1201 #include <signal.h>
1202 static void sighandler(int sig){
1203     raise(SIGTERM);
1204 }
1205 int foo(void){
1206     $code
1207 }
1208 int (*func_ptr)(void) = foo;
1209 int main(void){
1210     signal(SIGILL, sighandler);
1211     signal(SIGFPE, sighandler);
1212     signal(SIGSEGV, sighandler);
1213 #ifdef SIGBUS
1214     signal(SIGBUS, sighandler);
1215 #endif
1216     return func_ptr();
1217 }
1218 EOF
1219 }
1220
1221 check_type(){
1222     log check_type "$@"
1223     headers=$1
1224     type=$2
1225     shift 2
1226     disable_safe "$type"
1227     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1228 }
1229
1230 check_struct(){
1231     log check_struct "$@"
1232     headers=$1
1233     struct=$2
1234     member=$3
1235     shift 3
1236     disable_safe "${struct}_${member}"
1237     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1238         enable_safe "${struct}_${member}"
1239 }
1240
1241 check_builtin(){
1242     log check_builtin "$@"
1243     name=$1
1244     headers=$2
1245     builtin=$3
1246     shift 3
1247     disable "$name"
1248     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1249 }
1250
1251 check_compile_assert(){
1252     log check_compile_assert "$@"
1253     name=$1
1254     headers=$2
1255     condition=$3
1256     shift 3
1257     disable "$name"
1258     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1259 }
1260
1261 require(){
1262     name="$1"
1263     header="$2"
1264     func="$3"
1265     shift 3
1266     check_lib $header $func "$@" || die "ERROR: $name not found"
1267 }
1268
1269 require2(){
1270     name="$1"
1271     headers="$2"
1272     func="$3"
1273     shift 3
1274     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1275 }
1276
1277 require_cpp(){
1278     name="$1"
1279     headers="$2"
1280     classes="$3"
1281     shift 3
1282     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1283 }
1284
1285 use_pkg_config(){
1286     pkg="$1"
1287     check_pkg_config "$@" || return 1
1288     add_cflags    $(get_safe "${pkg}_cflags")
1289     add_extralibs $(get_safe "${pkg}_libs")
1290 }
1291
1292 require_pkg_config(){
1293     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1294 }
1295
1296 require_libfreetype(){
1297     log require_libfreetype "$@"
1298     pkg="freetype2"
1299     check_cmd $pkg_config --exists --print-errors $pkg \
1300       || die "ERROR: $pkg not found"
1301     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1302     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1303     {
1304         echo "#include <ft2build.h>"
1305         echo "#include FT_FREETYPE_H"
1306         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1307         echo "int main(void) { return 0; }"
1308     } | check_ld "cc" $pkg_cflags $pkg_libs \
1309       && set_safe "${pkg}_cflags" $pkg_cflags \
1310       && set_safe "${pkg}_libs"   $pkg_libs \
1311       || die "ERROR: $pkg not found"
1312     add_cflags    $(get_safe "${pkg}_cflags")
1313     add_extralibs $(get_safe "${pkg}_libs")
1314 }
1315
1316 hostcc_e(){
1317     eval printf '%s\\n' $HOSTCC_E
1318 }
1319
1320 hostcc_o(){
1321     eval printf '%s\\n' $HOSTCC_O
1322 }
1323
1324 check_host_cc(){
1325     log check_host_cc "$@"
1326     cat > $TMPC
1327     log_file $TMPC
1328     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1329 }
1330
1331 check_host_cpp(){
1332     log check_host_cpp "$@"
1333     cat > $TMPC
1334     log_file $TMPC
1335     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1336 }
1337
1338 check_host_cppflags(){
1339     log check_host_cppflags "$@"
1340     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1341 int x;
1342 EOF
1343 }
1344
1345 check_host_cflags(){
1346     log check_host_cflags "$@"
1347     set -- $($host_cflags_filter "$@")
1348     check_host_cc "$@" <<EOF && append host_cflags "$@"
1349 int x;
1350 EOF
1351 }
1352
1353 check_host_cpp_condition(){
1354     log check_host_cpp_condition "$@"
1355     header=$1
1356     condition=$2
1357     shift 2
1358     check_host_cpp "$@" <<EOF
1359 #include <$header>
1360 #if !($condition)
1361 #error "unsatisfied condition: $condition"
1362 #endif
1363 EOF
1364 }
1365
1366 cp_if_changed(){
1367     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1368     mkdir -p "$(dirname $2)"
1369     $cp_f "$1" "$2"
1370 }
1371
1372 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1373 # system-dependent things.
1374
1375 AVCODEC_COMPONENTS="
1376     bsfs
1377     decoders
1378     encoders
1379     hwaccels
1380     parsers
1381 "
1382
1383 AVDEVICE_COMPONENTS="
1384     indevs
1385     outdevs
1386 "
1387 AVFILTER_COMPONENTS="
1388     filters
1389 "
1390 AVFORMAT_COMPONENTS="
1391     demuxers
1392     muxers
1393     protocols
1394 "
1395
1396 AVRESAMPLE_COMPONENTS=""
1397 AVUTIL_COMPONENTS=""
1398
1399 COMPONENT_LIST="
1400     $AVCODEC_COMPONENTS
1401     $AVDEVICE_COMPONENTS
1402     $AVFILTER_COMPONENTS
1403     $AVFORMAT_COMPONENTS
1404     $AVRESAMPLE_COMPONENTS
1405     $AVUTIL_COMPONENTS
1406 "
1407
1408 EXAMPLE_LIST="
1409     avio_reading_example
1410     avio_dir_cmd_example
1411     decoding_encoding_example
1412     demuxing_decoding_example
1413     extract_mvs_example
1414     filter_audio_example
1415     filtering_audio_example
1416     filtering_video_example
1417     metadata_example
1418     muxing_example
1419     qsvdec_example
1420     remuxing_example
1421     resampling_audio_example
1422     scaling_video_example
1423     transcode_aac_example
1424     transcoding_example
1425 "
1426
1427 EXTERNAL_LIBRARY_LIST="
1428     avisynth
1429     bzlib
1430     chromaprint
1431     crystalhd
1432     decklink
1433     frei0r
1434     gcrypt
1435     gmp
1436     gnutls
1437     iconv
1438     ladspa
1439     libaacplus
1440     libass
1441     libbluray
1442     libbs2b
1443     libcaca
1444     libcdio
1445     libcelt
1446     libdc1394
1447     libdcadec
1448     libfaac
1449     libfdk_aac
1450     libflite
1451     libfontconfig
1452     libfreetype
1453     libfribidi
1454     libgme
1455     libgsm
1456     libiec61883
1457     libilbc
1458     libkvazaar
1459     libmfx
1460     libmodplug
1461     libmp3lame
1462     libnut
1463     libopencore_amrnb
1464     libopencore_amrwb
1465     libopencv
1466     libopenh264
1467     libopenjpeg
1468     libopus
1469     libpulse
1470     libquvi
1471     librtmp
1472     librubberband
1473     libschroedinger
1474     libshine
1475     libsmbclient
1476     libsnappy
1477     libsoxr
1478     libspeex
1479     libssh
1480     libtesseract
1481     libtheora
1482     libtwolame
1483     libutvideo
1484     libv4l2
1485     libvidstab
1486     libvo_aacenc
1487     libvo_amrwbenc
1488     libvorbis
1489     libvpx
1490     libwavpack
1491     libwebp
1492     libx264
1493     libx265
1494     libxavs
1495     libxcb
1496     libxcb_shm
1497     libxcb_shape
1498     libxcb_xfixes
1499     libxvid
1500     libzimg
1501     libzmq
1502     libzvbi
1503     lzma
1504     mmal
1505     netcdf
1506     nvenc
1507     openal
1508     opencl
1509     opengl
1510     openssl
1511     schannel
1512     sdl
1513     securetransport
1514     x11grab
1515     xlib
1516     zlib
1517 "
1518
1519 DOCUMENT_LIST="
1520     doc
1521     htmlpages
1522     manpages
1523     podpages
1524     txtpages
1525 "
1526
1527 FEATURE_LIST="
1528     ftrapv
1529     gray
1530     hardcoded_tables
1531     runtime_cpudetect
1532     safe_bitstream_reader
1533     shared
1534     small
1535     static
1536     swscale_alpha
1537 "
1538
1539 HWACCEL_LIST="
1540     d3d11va
1541     dxva2
1542     vaapi
1543     vda
1544     vdpau
1545     videotoolbox
1546     xvmc
1547 "
1548
1549 LIBRARY_LIST="
1550     avcodec
1551     avdevice
1552     avfilter
1553     avformat
1554     avresample
1555     avutil
1556     postproc
1557     swresample
1558     swscale
1559 "
1560
1561 LICENSE_LIST="
1562     gpl
1563     nonfree
1564     version3
1565 "
1566
1567 PROGRAM_LIST="
1568     ffplay
1569     ffprobe
1570     ffserver
1571     ffmpeg
1572 "
1573
1574 SUBSYSTEM_LIST="
1575     dct
1576     dwt
1577     error_resilience
1578     faan
1579     fast_unaligned
1580     fft
1581     lsp
1582     lzo
1583     mdct
1584     pixelutils
1585     network
1586     rdft
1587 "
1588
1589 CONFIG_LIST="
1590     $COMPONENT_LIST
1591     $DOCUMENT_LIST
1592     $EXAMPLE_LIST
1593     $EXTERNAL_LIBRARY_LIST
1594     $FEATURE_LIST
1595     $HWACCEL_LIST
1596     $LICENSE_LIST
1597     $LIBRARY_LIST
1598     $PROGRAM_LIST
1599     $SUBSYSTEM_LIST
1600     fontconfig
1601     incompatible_libav_abi
1602     memalign_hack
1603     memory_poisoning
1604     neon_clobber_test
1605     pic
1606     pod2man
1607     raise_major
1608     thumb
1609     valgrind_backtrace
1610     xmm_clobber_test
1611 "
1612
1613 THREADS_LIST="
1614     pthreads
1615     os2threads
1616     w32threads
1617 "
1618
1619 ATOMICS_LIST="
1620     atomics_gcc
1621     atomics_suncc
1622     atomics_win32
1623 "
1624
1625 ARCH_LIST="
1626     aarch64
1627     alpha
1628     arm
1629     avr32
1630     avr32_ap
1631     avr32_uc
1632     bfin
1633     ia64
1634     m68k
1635     mips
1636     mips64
1637     parisc
1638     ppc
1639     ppc64
1640     s390
1641     sh4
1642     sparc
1643     sparc64
1644     tilegx
1645     tilepro
1646     tomi
1647     x86
1648     x86_32
1649     x86_64
1650 "
1651
1652 ARCH_EXT_LIST_ARM="
1653     armv5te
1654     armv6
1655     armv6t2
1656     armv8
1657     neon
1658     vfp
1659     vfpv3
1660     setend
1661 "
1662
1663 ARCH_EXT_LIST_MIPS="
1664     mipsfpu
1665     mips32r2
1666     mips64r2
1667     mips32r6
1668     mips64r6
1669     mipsdsp
1670     mipsdspr2
1671     msa
1672 "
1673
1674 ARCH_EXT_LIST_LOONGSON="
1675     loongson2
1676     loongson3
1677     mmi
1678 "
1679
1680 ARCH_EXT_LIST_X86_SIMD="
1681     aesni
1682     amd3dnow
1683     amd3dnowext
1684     avx
1685     avx2
1686     fma3
1687     fma4
1688     mmx
1689     mmxext
1690     sse
1691     sse2
1692     sse3
1693     sse4
1694     sse42
1695     ssse3
1696     xop
1697 "
1698
1699 ARCH_EXT_LIST_PPC="
1700     altivec
1701     dcbzl
1702     ldbrx
1703     power8
1704     ppc4xx
1705     vsx
1706 "
1707
1708 ARCH_EXT_LIST_X86="
1709     $ARCH_EXT_LIST_X86_SIMD
1710     cpunop
1711     i686
1712 "
1713
1714 ARCH_EXT_LIST="
1715     $ARCH_EXT_LIST_ARM
1716     $ARCH_EXT_LIST_PPC
1717     $ARCH_EXT_LIST_X86
1718     $ARCH_EXT_LIST_MIPS
1719     $ARCH_EXT_LIST_LOONGSON
1720 "
1721
1722 ARCH_FEATURES="
1723     aligned_stack
1724     fast_64bit
1725     fast_clz
1726     fast_cmov
1727     local_aligned_8
1728     local_aligned_16
1729     local_aligned_32
1730     simd_align_16
1731 "
1732
1733 BUILTIN_LIST="
1734     atomic_cas_ptr
1735     atomic_compare_exchange
1736     machine_rw_barrier
1737     MemoryBarrier
1738     mm_empty
1739     rdtsc
1740     sarestart
1741     sync_val_compare_and_swap
1742 "
1743 HAVE_LIST_CMDLINE="
1744     inline_asm
1745     symver
1746     yasm
1747 "
1748
1749 HAVE_LIST_PUB="
1750     bigendian
1751     fast_unaligned
1752     incompatible_libav_abi
1753 "
1754
1755 HEADERS_LIST="
1756     alsa_asoundlib_h
1757     altivec_h
1758     arpa_inet_h
1759     asm_types_h
1760     cdio_paranoia_h
1761     cdio_paranoia_paranoia_h
1762     dev_bktr_ioctl_bt848_h
1763     dev_bktr_ioctl_meteor_h
1764     dev_ic_bt8xx_h
1765     dev_video_bktr_ioctl_bt848_h
1766     dev_video_meteor_ioctl_meteor_h
1767     direct_h
1768     dirent_h
1769     dlfcn_h
1770     d3d11_h
1771     dxva_h
1772     ES2_gl_h
1773     gsm_h
1774     io_h
1775     mach_mach_time_h
1776     machine_ioctl_bt848_h
1777     machine_ioctl_meteor_h
1778     malloc_h
1779     openjpeg_2_1_openjpeg_h
1780     openjpeg_2_0_openjpeg_h
1781     openjpeg_1_5_openjpeg_h
1782     OpenGL_gl3_h
1783     poll_h
1784     sndio_h
1785     soundcard_h
1786     sys_mman_h
1787     sys_param_h
1788     sys_resource_h
1789     sys_select_h
1790     sys_soundcard_h
1791     sys_time_h
1792     sys_un_h
1793     sys_videoio_h
1794     termios_h
1795     udplite_h
1796     unistd_h
1797     valgrind_valgrind_h
1798     windows_h
1799     winsock2_h
1800 "
1801
1802 INTRINSICS_LIST="
1803     intrinsics_neon
1804 "
1805
1806 COMPLEX_FUNCS="
1807     cabs
1808     cexp
1809 "
1810
1811 MATH_FUNCS="
1812     atanf
1813     atan2f
1814     cbrt
1815     cbrtf
1816     copysign
1817     cosf
1818     erf
1819     exp2
1820     exp2f
1821     expf
1822     hypot
1823     isfinite
1824     isinf
1825     isnan
1826     ldexpf
1827     llrint
1828     llrintf
1829     log2
1830     log2f
1831     log10f
1832     lrint
1833     lrintf
1834     powf
1835     rint
1836     round
1837     roundf
1838     sinf
1839     trunc
1840     truncf
1841 "
1842
1843 SYSTEM_FUNCS="
1844     access
1845     aligned_malloc
1846     arc4random
1847     clock_gettime
1848     closesocket
1849     CommandLineToArgvW
1850     CoTaskMemFree
1851     CryptGenRandom
1852     dlopen
1853     fcntl
1854     flt_lim
1855     fork
1856     getaddrinfo
1857     gethrtime
1858     getopt
1859     GetProcessAffinityMask
1860     GetProcessMemoryInfo
1861     GetProcessTimes
1862     getrusage
1863     GetSystemTimeAsFileTime
1864     gettimeofday
1865     glob
1866     glXGetProcAddress
1867     gmtime_r
1868     inet_aton
1869     isatty
1870     jack_port_get_latency_range
1871     kbhit
1872     localtime_r
1873     lstat
1874     lzo1x_999_compress
1875     mach_absolute_time
1876     MapViewOfFile
1877     memalign
1878     mkstemp
1879     mmap
1880     mprotect
1881     nanosleep
1882     PeekNamedPipe
1883     posix_memalign
1884     pthread_cancel
1885     sched_getaffinity
1886     SetConsoleTextAttribute
1887     SetConsoleCtrlHandler
1888     setmode
1889     setrlimit
1890     Sleep
1891     strerror_r
1892     sysconf
1893     sysctl
1894     usleep
1895     UTGetOSTypeFromString
1896     VirtualAlloc
1897     wglGetProcAddress
1898 "
1899
1900 TOOLCHAIN_FEATURES="
1901     as_dn_directive
1902     as_func
1903     as_object_arch
1904     asm_mod_q
1905     attribute_may_alias
1906     attribute_packed
1907     ebp_available
1908     ebx_available
1909     gnu_as
1910     gnu_windres
1911     ibm_asm
1912     inline_asm_labels
1913     inline_asm_nonlocal_labels
1914     inline_asm_direct_symbol_refs
1915     pragma_deprecated
1916     rsync_contimeout
1917     symver_asm_label
1918     symver_gnu_asm
1919     vfp_args
1920     xform_asm
1921     xmm_clobbers
1922 "
1923
1924 TYPES_LIST="
1925     CONDITION_VARIABLE_Ptr
1926     socklen_t
1927     struct_addrinfo
1928     struct_group_source_req
1929     struct_ip_mreq_source
1930     struct_ipv6_mreq
1931     struct_pollfd
1932     struct_rusage_ru_maxrss
1933     struct_sctp_event_subscribe
1934     struct_sockaddr_in6
1935     struct_sockaddr_sa_len
1936     struct_sockaddr_storage
1937     struct_stat_st_mtim_tv_nsec
1938     struct_v4l2_frmivalenum_discrete
1939 "
1940
1941 HAVE_LIST="
1942     $ARCH_EXT_LIST
1943     $(add_suffix _external $ARCH_EXT_LIST)
1944     $(add_suffix _inline   $ARCH_EXT_LIST)
1945     $ARCH_FEATURES
1946     $ATOMICS_LIST
1947     $BUILTIN_LIST
1948     $COMPLEX_FUNCS
1949     $HAVE_LIST_CMDLINE
1950     $HAVE_LIST_PUB
1951     $HEADERS_LIST
1952     $INTRINSICS_LIST
1953     $MATH_FUNCS
1954     $SYSTEM_FUNCS
1955     $THREADS_LIST
1956     $TOOLCHAIN_FEATURES
1957     $TYPES_LIST
1958     atomics_native
1959     dos_paths
1960     dxva2api_cobj
1961     dxva2_lib
1962     winrt
1963     libc_msvcrt
1964     libdc1394_1
1965     libdc1394_2
1966     makeinfo
1967     makeinfo_html
1968     perl
1969     pod2man
1970     sdl
1971     section_data_rel_ro
1972     texi2html
1973     threads
1974     vaapi_x11
1975     vdpau_x11
1976     xlib
1977 "
1978
1979 # options emitted with CONFIG_ prefix but not available on the command line
1980 CONFIG_EXTRA="
1981     aandcttables
1982     ac3dsp
1983     audio_frame_queue
1984     audiodsp
1985     blockdsp
1986     bswapdsp
1987     cabac
1988     dirac_parse
1989     dvprofile
1990     exif
1991     faandct
1992     faanidct
1993     fdctdsp
1994     flacdsp
1995     fmtconvert
1996     frame_thread_encoder
1997     g722dsp
1998     golomb
1999     gplv3
2000     h263dsp
2001     h264chroma
2002     h264dsp
2003     h264pred
2004     h264qpel
2005     hpeldsp
2006     huffman
2007     huffyuvdsp
2008     huffyuvencdsp
2009     idctdsp
2010     iirfilter
2011     imdct15
2012     intrax8
2013     ividsp
2014     jpegtables
2015     libx262
2016     lgplv3
2017     llauddsp
2018     llviddsp
2019     lpc
2020     lzf
2021     me_cmp
2022     mpeg_er
2023     mpegaudio
2024     mpegaudiodsp
2025     mpegvideo
2026     mpegvideoenc
2027     mss34dsp
2028     pixblockdsp
2029     qpeldsp
2030     qsv
2031     qsvdec
2032     qsvenc
2033     rangecoder
2034     riffdec
2035     riffenc
2036     rtpdec
2037     rtpenc_chain
2038     rv34dsp
2039     sinewin
2040     snappy
2041     startcode
2042     texturedsp
2043     texturedspenc
2044     tpeldsp
2045     videodsp
2046     vp3dsp
2047     vp56dsp
2048     vp8dsp
2049     wma_freqs
2050     wmv2dsp
2051 "
2052
2053 CMDLINE_SELECT="
2054     $ARCH_EXT_LIST
2055     $CONFIG_LIST
2056     $HAVE_LIST_CMDLINE
2057     $THREADS_LIST
2058     asm
2059     cross_compile
2060     debug
2061     extra_warnings
2062     logging
2063     lto
2064     optimizations
2065     rpath
2066     stripping
2067 "
2068
2069 PATHS_LIST="
2070     bindir
2071     datadir
2072     docdir
2073     incdir
2074     libdir
2075     mandir
2076     pkgconfigdir
2077     prefix
2078     shlibdir
2079 "
2080
2081 CMDLINE_SET="
2082     $PATHS_LIST
2083     ar
2084     arch
2085     as
2086     assert_level
2087     build_suffix
2088     cc
2089     objcc
2090     cpu
2091     cross_prefix
2092     custom_allocator
2093     cxx
2094     dep_cc
2095     doxygen
2096     env
2097     extra_version
2098     gas
2099     host_cc
2100     host_cflags
2101     host_ld
2102     host_ldflags
2103     host_libs
2104     host_os
2105     install
2106     ld
2107     logfile
2108     malloc_prefix
2109     nm
2110     optflags
2111     pkg_config
2112     pkg_config_flags
2113     progs_suffix
2114     random_seed
2115     ranlib
2116     samples
2117     strip
2118     sws_max_filter_size
2119     sysinclude
2120     sysroot
2121     target_exec
2122     target_os
2123     target_path
2124     target_samples
2125     tempprefix
2126     toolchain
2127     valgrind
2128     yasmexe
2129 "
2130
2131 CMDLINE_APPEND="
2132     extra_cflags
2133     extra_cxxflags
2134     extra_objcflags
2135     host_cppflags
2136 "
2137
2138 # code dependency declarations
2139
2140 # architecture extensions
2141
2142 armv5te_deps="arm"
2143 armv6_deps="arm"
2144 armv6t2_deps="arm"
2145 armv8_deps="aarch64"
2146 neon_deps_any="aarch64 arm"
2147 intrinsics_neon_deps="neon"
2148 vfp_deps_any="aarch64 arm"
2149 vfpv3_deps="vfp"
2150 setend_deps="arm"
2151
2152 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2153
2154 mipsfpu_deps="mips"
2155 mipsdsp_deps="mips"
2156 mipsdspr2_deps="mips"
2157 mips32r2_deps="mips"
2158 mips32r6_deps="mips"
2159 mips64r2_deps="mips"
2160 mips64r6_deps="mips"
2161 msa_deps="mips"
2162 mmi_deps="mips"
2163
2164 altivec_deps="ppc"
2165 dcbzl_deps="ppc"
2166 ldbrx_deps="ppc"
2167 ppc4xx_deps="ppc"
2168 vsx_deps="altivec"
2169 power8_deps="vsx"
2170
2171 cpunop_deps="i686"
2172 x86_64_select="i686"
2173 x86_64_suggest="fast_cmov"
2174
2175 amd3dnow_deps="mmx"
2176 amd3dnowext_deps="amd3dnow"
2177 i686_deps="x86"
2178 mmx_deps="x86"
2179 mmxext_deps="mmx"
2180 sse_deps="mmxext"
2181 sse2_deps="sse"
2182 sse3_deps="sse2"
2183 ssse3_deps="sse3"
2184 sse4_deps="ssse3"
2185 sse42_deps="sse4"
2186 aesni_deps="sse42"
2187 avx_deps="sse42"
2188 xop_deps="avx"
2189 fma3_deps="avx"
2190 fma4_deps="avx"
2191 avx2_deps="avx"
2192
2193 mmx_external_deps="yasm"
2194 mmx_inline_deps="inline_asm"
2195 mmx_suggest="mmx_external mmx_inline"
2196
2197 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2198     eval dep=\$${ext}_deps
2199     eval ${ext}_external_deps='"${dep}_external"'
2200     eval ${ext}_inline_deps='"${dep}_inline"'
2201     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2202 done
2203
2204 aligned_stack_if_any="aarch64 ppc x86"
2205 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2206 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2207 fast_unaligned_if_any="aarch64 ppc x86"
2208 simd_align_16_if_any="altivec neon sse"
2209
2210 # system capabilities
2211 symver_if_any="symver_asm_label symver_gnu_asm"
2212 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2213
2214 # threading support
2215 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2216 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2217 atomics_win32_if="MemoryBarrier"
2218 atomics_native_if_any="$ATOMICS_LIST"
2219 w32threads_deps="atomics_native"
2220 threads_if_any="$THREADS_LIST"
2221
2222 # subsystems
2223 dct_select="rdft"
2224 dirac_parse_select="golomb"
2225 error_resilience_select="me_cmp"
2226 faandct_deps="faan fdctdsp"
2227 faanidct_deps="faan idctdsp"
2228 frame_thread_encoder_deps="encoders threads"
2229 intrax8_select="error_resilience"
2230 mdct_select="fft"
2231 rdft_select="fft"
2232 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2233 mpeg_er_select="error_resilience"
2234 mpegaudio_select="mpegaudiodsp"
2235 mpegaudiodsp_select="dct"
2236 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2237 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2238 qsvdec_select="qsv"
2239 qsvenc_select="qsv"
2240
2241 # decoders / encoders
2242 aac_decoder_select="imdct15 mdct sinewin"
2243 aac_fixed_decoder_select="mdct sinewin"
2244 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2245 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2246 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2247 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2248 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2249 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2250 adpcm_g722_decoder_select="g722dsp"
2251 adpcm_g722_encoder_select="g722dsp"
2252 aic_decoder_select="golomb idctdsp"
2253 alac_encoder_select="lpc"
2254 als_decoder_select="bswapdsp"
2255 amrnb_decoder_select="lsp"
2256 amrwb_decoder_select="lsp"
2257 amv_decoder_select="sp5x_decoder exif"
2258 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2259 ape_decoder_select="bswapdsp llauddsp"
2260 apng_decoder_select="zlib"
2261 apng_encoder_select="huffyuvencdsp zlib"
2262 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2263 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2264 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2265 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2266 atrac1_decoder_select="mdct sinewin"
2267 atrac3_decoder_select="mdct"
2268 atrac3p_decoder_select="mdct sinewin"
2269 avrn_decoder_select="exif jpegtables"
2270 bink_decoder_select="blockdsp hpeldsp"
2271 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2272 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2273 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2274 cllc_decoder_select="bswapdsp"
2275 comfortnoise_encoder_select="lpc"
2276 cook_decoder_select="audiodsp mdct sinewin"
2277 cscd_decoder_select="lzo"
2278 cscd_decoder_suggest="zlib"
2279 dca_decoder_select="fmtconvert mdct"
2280 dds_decoder_select="texturedsp"
2281 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2282 dnxhd_decoder_select="blockdsp idctdsp"
2283 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2284 dvvideo_decoder_select="dvprofile idctdsp"
2285 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2286 dxa_decoder_select="zlib"
2287 dxv_decoder_select="lzf texturedsp"
2288 eac3_decoder_select="ac3_decoder"
2289 eac3_encoder_select="ac3_encoder"
2290 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2291 eatgq_decoder_select="aandcttables"
2292 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2293 exr_decoder_select="zlib"
2294 ffv1_decoder_select="golomb rangecoder"
2295 ffv1_encoder_select="rangecoder"
2296 ffvhuff_decoder_select="huffyuv_decoder"
2297 ffvhuff_encoder_select="huffyuv_encoder"
2298 fic_decoder_select="golomb"
2299 flac_decoder_select="flacdsp golomb"
2300 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2301 flashsv_decoder_select="zlib"
2302 flashsv_encoder_select="zlib"
2303 flashsv2_encoder_select="zlib"
2304 flashsv2_decoder_select="zlib"
2305 flv_decoder_select="h263_decoder"
2306 flv_encoder_select="h263_encoder"
2307 fourxm_decoder_select="blockdsp bswapdsp"
2308 fraps_decoder_select="bswapdsp huffman"
2309 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2310 g729_decoder_select="audiodsp"
2311 h261_decoder_select="mpegvideo"
2312 h261_encoder_select="aandcttables mpegvideoenc"
2313 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2314 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2315 h263i_decoder_select="h263_decoder"
2316 h263p_decoder_select="h263_decoder"
2317 h263p_encoder_select="h263_encoder"
2318 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2319 h264_decoder_suggest="error_resilience"
2320 h264_qsv_decoder_deps="libmfx"
2321 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2322 h264_qsv_encoder_deps="libmfx"
2323 h264_qsv_encoder_select="qsvenc"
2324 hap_decoder_select="snappy texturedsp"
2325 hap_encoder_deps="libsnappy"
2326 hap_encoder_select="texturedspenc"
2327 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2328 hevc_qsv_encoder_deps="libmfx"
2329 hevc_qsv_decoder_deps="libmfx"
2330 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2331 hevc_qsv_encoder_select="qsvenc"
2332 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2333 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2334 iac_decoder_select="imc_decoder"
2335 imc_decoder_select="bswapdsp fft mdct sinewin"
2336 indeo3_decoder_select="hpeldsp"
2337 indeo4_decoder_select="ividsp"
2338 indeo5_decoder_select="ividsp"
2339 interplay_video_decoder_select="hpeldsp"
2340 jpegls_decoder_select="golomb mjpeg_decoder"
2341 jpegls_encoder_select="golomb"
2342 jv_decoder_select="blockdsp"
2343 lagarith_decoder_select="huffyuvdsp"
2344 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2345 loco_decoder_select="golomb"
2346 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2347 metasound_decoder_select="lsp mdct sinewin"
2348 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2349 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2350 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2351 mjpegb_decoder_select="mjpeg_decoder"
2352 mlp_decoder_select="mlp_parser"
2353 motionpixels_decoder_select="bswapdsp"
2354 mp1_decoder_select="mpegaudio"
2355 mp1float_decoder_select="mpegaudio"
2356 mp2_decoder_select="mpegaudio"
2357 mp2float_decoder_select="mpegaudio"
2358 mp3_decoder_select="mpegaudio"
2359 mp3adu_decoder_select="mpegaudio"
2360 mp3adufloat_decoder_select="mpegaudio"
2361 mp3float_decoder_select="mpegaudio"
2362 mp3on4_decoder_select="mpegaudio"
2363 mp3on4float_decoder_select="mpegaudio"
2364 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2365 mpc8_decoder_select="mpegaudiodsp"
2366 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2367 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2368 mpegvideo_decoder_select="mpegvideo"
2369 mpeg1video_decoder_select="mpegvideo"
2370 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2371 mpeg2video_decoder_select="mpegvideo"
2372 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2373 mpeg2_qsv_decoder_deps="libmfx"
2374 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2375 mpeg2_qsv_encoder_deps="libmfx"
2376 mpeg2_qsv_encoder_select="qsvenc"
2377 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2378 mpeg4_encoder_select="h263_encoder"
2379 msa1_decoder_select="mss34dsp"
2380 msmpeg4v1_decoder_select="h263_decoder"
2381 msmpeg4v2_decoder_select="h263_decoder"
2382 msmpeg4v2_encoder_select="h263_encoder"
2383 msmpeg4v3_decoder_select="h263_decoder"
2384 msmpeg4v3_encoder_select="h263_encoder"
2385 mss2_decoder_select="vc1_decoder"
2386 mts2_decoder_select="mss34dsp"
2387 mxpeg_decoder_select="mjpeg_decoder"
2388 nellymoser_decoder_select="mdct sinewin"
2389 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2390 nuv_decoder_select="idctdsp lzo"
2391 on2avc_decoder_select="mdct"
2392 opus_decoder_deps="swresample"
2393 opus_decoder_select="imdct15"
2394 png_decoder_select="zlib"
2395 png_encoder_select="huffyuvencdsp zlib"
2396 prores_decoder_select="blockdsp idctdsp"
2397 prores_encoder_select="fdctdsp"
2398 qcelp_decoder_select="lsp"
2399 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2400 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2401 ra_144_decoder_select="audiodsp"
2402 ralf_decoder_select="golomb"
2403 rawvideo_decoder_select="bswapdsp"
2404 rscc_decoder_select="zlib"
2405 rtjpeg_decoder_select="me_cmp"
2406 rv10_decoder_select="h263_decoder"
2407 rv10_encoder_select="h263_encoder"
2408 rv20_decoder_select="h263_decoder"
2409 rv20_encoder_select="h263_encoder"
2410 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2411 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2412 screenpresso_decoder_select="zlib"
2413 shorten_decoder_select="golomb"
2414 sipr_decoder_select="lsp"
2415 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2416 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2417 sonic_decoder_select="golomb rangecoder"
2418 sonic_encoder_select="golomb rangecoder"
2419 sonic_ls_encoder_select="golomb rangecoder"
2420 sp5x_decoder_select="mjpeg_decoder"
2421 svq1_decoder_select="hpeldsp"
2422 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2423 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2424 svq3_decoder_suggest="zlib"
2425 tak_decoder_select="audiodsp"
2426 tdsc_decoder_select="zlib mjpeg_decoder"
2427 theora_decoder_select="vp3_decoder"
2428 thp_decoder_select="mjpeg_decoder"
2429 tiff_decoder_suggest="zlib lzma"
2430 tiff_encoder_suggest="zlib"
2431 truehd_decoder_select="mlp_parser"
2432 truemotion2_decoder_select="bswapdsp"
2433 truespeech_decoder_select="bswapdsp"
2434 tscc_decoder_select="zlib"
2435 twinvq_decoder_select="mdct lsp sinewin"
2436 txd_decoder_select="texturedsp"
2437 utvideo_decoder_select="bswapdsp"
2438 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2439 vble_decoder_select="huffyuvdsp"
2440 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2441 vc1image_decoder_select="vc1_decoder"
2442 vc1_qsv_decoder_deps="libmfx"
2443 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2444 vorbis_decoder_select="mdct"
2445 vorbis_encoder_select="mdct"
2446 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2447 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2448 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2449 vp6a_decoder_select="vp6_decoder"
2450 vp6f_decoder_select="vp6_decoder"
2451 vp7_decoder_select="h264pred videodsp vp8dsp"
2452 vp8_decoder_select="h264pred videodsp vp8dsp"
2453 vp9_decoder_select="videodsp vp9_parser"
2454 webp_decoder_select="vp8_decoder"
2455 wmalossless_decoder_select="llauddsp"
2456 wmapro_decoder_select="mdct sinewin wma_freqs"
2457 wmav1_decoder_select="mdct sinewin wma_freqs"
2458 wmav1_encoder_select="mdct sinewin wma_freqs"
2459 wmav2_decoder_select="mdct sinewin wma_freqs"
2460 wmav2_encoder_select="mdct sinewin wma_freqs"
2461 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2462 wmv1_decoder_select="h263_decoder"
2463 wmv1_encoder_select="h263_encoder"
2464 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2465 wmv2_encoder_select="h263_encoder wmv2dsp"
2466 wmv3_decoder_select="vc1_decoder"
2467 wmv3image_decoder_select="wmv3_decoder"
2468 xma1_decoder_select="wmapro_decoder"
2469 xma2_decoder_select="wmapro_decoder"
2470 zerocodec_decoder_select="zlib"
2471 zlib_decoder_select="zlib"
2472 zlib_encoder_select="zlib"
2473 zmbv_decoder_select="zlib"
2474 zmbv_encoder_select="zlib"
2475
2476 # hardware accelerators
2477 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2478 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2479 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2480 vaapi_deps="va_va_h"
2481 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2482 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2483 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2484 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2485 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2486 xvmc_deps="X11_extensions_XvMClib_h"
2487
2488 h263_vaapi_hwaccel_deps="vaapi"
2489 h263_vaapi_hwaccel_select="h263_decoder"
2490 h263_videotoolbox_hwaccel_deps="videotoolbox"
2491 h263_videotoolbox_hwaccel_select="h263_decoder"
2492 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2493 h264_d3d11va_hwaccel_deps="d3d11va"
2494 h264_d3d11va_hwaccel_select="h264_decoder"
2495 h264_dxva2_hwaccel_deps="dxva2"
2496 h264_dxva2_hwaccel_select="h264_decoder"
2497 h264_mmal_decoder_deps="mmal"
2498 h264_mmal_hwaccel_deps="mmal"
2499 h264_mmal_decoder_select="h264_decoder"
2500 h264_mmal_encoder_deps="mmal"
2501 h264_qsv_hwaccel_deps="libmfx"
2502 h264_vaapi_hwaccel_deps="vaapi"
2503 h264_vaapi_hwaccel_select="h264_decoder"
2504 h264_vda_decoder_deps="vda"
2505 h264_vda_decoder_select="h264_decoder"
2506 h264_vda_hwaccel_deps="vda"
2507 h264_vda_hwaccel_select="h264_decoder"
2508 h264_vda_old_hwaccel_deps="vda"
2509 h264_vda_old_hwaccel_select="h264_decoder"
2510 h264_vdpau_decoder_deps="vdpau"
2511 h264_vdpau_decoder_select="h264_decoder"
2512 h264_vdpau_hwaccel_deps="vdpau"
2513 h264_vdpau_hwaccel_select="h264_decoder"
2514 h264_videotoolbox_hwaccel_deps="videotoolbox"
2515 h264_videotoolbox_hwaccel_select="h264_decoder"
2516 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2517 hevc_d3d11va_hwaccel_select="hevc_decoder"
2518 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2519 hevc_dxva2_hwaccel_select="hevc_decoder"
2520 hevc_qsv_hwaccel_deps="libmfx"
2521 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2522 hevc_vaapi_hwaccel_select="hevc_decoder"
2523 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2524 hevc_vdpau_hwaccel_select="hevc_decoder"
2525 mpeg_vdpau_decoder_deps="vdpau"
2526 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2527 mpeg_xvmc_hwaccel_deps="xvmc"
2528 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2529 mpeg1_vdpau_decoder_deps="vdpau"
2530 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2531 mpeg1_vdpau_hwaccel_deps="vdpau"
2532 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2533 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2534 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2535 mpeg1_xvmc_hwaccel_deps="xvmc"
2536 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2537 mpeg2_crystalhd_decoder_select="crystalhd"
2538 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2539 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2540 mpeg2_dxva2_hwaccel_deps="dxva2"
2541 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2542 mpeg2_mmal_decoder_deps="mmal"
2543 mpeg2_mmal_hwaccel_deps="mmal"
2544 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2545 mpeg2_qsv_hwaccel_deps="libmfx"
2546 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2547 mpeg2_vaapi_hwaccel_deps="vaapi"
2548 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2549 mpeg2_vdpau_hwaccel_deps="vdpau"
2550 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2551 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2552 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2553 mpeg2_xvmc_hwaccel_deps="xvmc"
2554 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2555 mpeg4_crystalhd_decoder_select="crystalhd"
2556 mpeg4_vaapi_hwaccel_deps="vaapi"
2557 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2558 mpeg4_vdpau_decoder_deps="vdpau"
2559 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2560 mpeg4_vdpau_hwaccel_deps="vdpau"
2561 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2562 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2563 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2564 msmpeg4_crystalhd_decoder_select="crystalhd"
2565 vc1_crystalhd_decoder_select="crystalhd"
2566 vc1_d3d11va_hwaccel_deps="d3d11va"
2567 vc1_d3d11va_hwaccel_select="vc1_decoder"
2568 vc1_dxva2_hwaccel_deps="dxva2"
2569 vc1_dxva2_hwaccel_select="vc1_decoder"
2570 vc1_vaapi_hwaccel_deps="vaapi"
2571 vc1_vaapi_hwaccel_select="vc1_decoder"
2572 vc1_vdpau_decoder_deps="vdpau"
2573 vc1_vdpau_decoder_select="vc1_decoder"
2574 vc1_vdpau_hwaccel_deps="vdpau"
2575 vc1_vdpau_hwaccel_select="vc1_decoder"
2576 vc1_mmal_decoder_deps="mmal"
2577 vc1_mmal_hwaccel_deps="mmal"
2578 vc1_mmal_decoder_select="vc1_decoder"
2579 vc1_qsv_hwaccel_deps="libmfx"
2580 vc1_qsv_hwaccel_select="qsvdec_vc1"
2581 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2582 vp9_d3d11va_hwaccel_select="vp9_decoder"
2583 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2584 vp9_dxva2_hwaccel_select="vp9_decoder"
2585 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2586 vp9_vaapi_hwaccel_select="vp9_decoder"
2587 wmv3_crystalhd_decoder_select="crystalhd"
2588 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2589 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2590 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2591 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2592 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2593
2594 # parsers
2595 h264_parser_select="h264_decoder"
2596 hevc_parser_select="golomb"
2597 mpegvideo_parser_select="mpegvideo"
2598 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2599 vc1_parser_select="mpegvideo startcode vc1_decoder"
2600
2601 # bitstream_filters
2602 mjpeg2jpeg_bsf_select="jpegtables"
2603
2604 # external libraries
2605 chromaprint_muxer_deps="chromaprint"
2606 libaacplus_encoder_deps="libaacplus"
2607 libcelt_decoder_deps="libcelt"
2608 libdcadec_decoder_deps="libdcadec"
2609 libfaac_encoder_deps="libfaac"
2610 libfaac_encoder_select="audio_frame_queue"
2611 libfdk_aac_decoder_deps="libfdk_aac"
2612 libfdk_aac_encoder_deps="libfdk_aac"
2613 libfdk_aac_encoder_select="audio_frame_queue"
2614 libgme_demuxer_deps="libgme"
2615 libgsm_decoder_deps="libgsm"
2616 libgsm_encoder_deps="libgsm"
2617 libgsm_ms_decoder_deps="libgsm"
2618 libgsm_ms_encoder_deps="libgsm"
2619 libilbc_decoder_deps="libilbc"
2620 libilbc_encoder_deps="libilbc"
2621 libkvazaar_encoder_deps="libkvazaar"
2622 libmodplug_demuxer_deps="libmodplug"
2623 libmp3lame_encoder_deps="libmp3lame"
2624 libmp3lame_encoder_select="audio_frame_queue"
2625 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2626 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2627 libopencore_amrnb_encoder_select="audio_frame_queue"
2628 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2629 libopenh264_encoder_deps="libopenh264"
2630 libopenjpeg_decoder_deps="libopenjpeg"
2631 libopenjpeg_encoder_deps="libopenjpeg"
2632 libopus_decoder_deps="libopus"
2633 libopus_encoder_deps="libopus"
2634 libopus_encoder_select="audio_frame_queue"
2635 libquvi_demuxer_deps="libquvi"
2636 libschroedinger_decoder_deps="libschroedinger"
2637 libschroedinger_encoder_deps="libschroedinger"
2638 libshine_encoder_deps="libshine"
2639 libshine_encoder_select="audio_frame_queue"
2640 libspeex_decoder_deps="libspeex"
2641 libspeex_encoder_deps="libspeex"
2642 libspeex_encoder_select="audio_frame_queue"
2643 libtheora_encoder_deps="libtheora"
2644 libtwolame_encoder_deps="libtwolame"
2645 libvo_aacenc_encoder_deps="libvo_aacenc"
2646 libvo_aacenc_encoder_select="audio_frame_queue"
2647 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2648 libvorbis_decoder_deps="libvorbis"
2649 libvorbis_encoder_deps="libvorbis"
2650 libvorbis_encoder_select="audio_frame_queue"
2651 libvpx_vp8_decoder_deps="libvpx"
2652 libvpx_vp8_encoder_deps="libvpx"
2653 libvpx_vp9_decoder_deps="libvpx"
2654 libvpx_vp9_encoder_deps="libvpx"
2655 libwavpack_encoder_deps="libwavpack"
2656 libwebp_encoder_deps="libwebp"
2657 libwebp_anim_encoder_deps="libwebp"
2658 libx262_encoder_deps="libx262"
2659 libx264_encoder_deps="libx264"
2660 libx264rgb_encoder_deps="libx264"
2661 libx264rgb_encoder_select="libx264_encoder"
2662 libx265_encoder_deps="libx265"
2663 libxavs_encoder_deps="libxavs"
2664 libxvid_encoder_deps="libxvid"
2665 libutvideo_decoder_deps="libutvideo"
2666 libutvideo_encoder_deps="libutvideo"
2667 libzvbi_teletext_decoder_deps="libzvbi"
2668 nvenc_encoder_deps="nvenc"
2669 nvenc_h264_encoder_deps="nvenc"
2670 nvenc_hevc_encoder_deps="nvenc"
2671
2672 # demuxers / muxers
2673 ac3_demuxer_select="ac3_parser"
2674 asf_demuxer_select="riffdec"
2675 asf_o_demuxer_select="riffdec"
2676 asf_muxer_select="riffenc"
2677 asf_stream_muxer_select="asf_muxer"
2678 avi_demuxer_select="riffdec exif"
2679 avi_muxer_select="riffenc"
2680 avisynth_demuxer_deps="avisynth"
2681 avisynth_demuxer_select="riffdec"
2682 caf_demuxer_select="riffdec"
2683 dash_muxer_select="mp4_muxer"
2684 dirac_demuxer_select="dirac_parser"
2685 dts_demuxer_select="dca_parser"
2686 dtshd_demuxer_select="dca_parser"
2687 dv_demuxer_select="dvprofile"
2688 dv_muxer_select="dvprofile"
2689 dxa_demuxer_select="riffdec"
2690 eac3_demuxer_select="ac3_parser"
2691 f4v_muxer_select="mov_muxer"
2692 flac_demuxer_select="flac_parser"
2693 hds_muxer_select="flv_muxer"
2694 hls_muxer_select="mpegts_muxer"
2695 image2_alias_pix_demuxer_select="image2_demuxer"
2696 image2_brender_pix_demuxer_select="image2_demuxer"
2697 ipod_muxer_select="mov_muxer"
2698 ismv_muxer_select="mov_muxer"
2699 libnut_demuxer_deps="libnut"
2700 libnut_muxer_deps="libnut"
2701 matroska_audio_muxer_select="matroska_muxer"
2702 matroska_demuxer_select="riffdec"
2703 matroska_demuxer_suggest="bzlib lzo zlib"
2704 matroska_muxer_select="riffenc"
2705 mmf_muxer_select="riffenc"
2706 mov_demuxer_select="riffdec"
2707 mov_demuxer_suggest="zlib"
2708 mov_muxer_select="riffenc rtpenc_chain"
2709 mp3_demuxer_select="mpegaudio_parser"
2710 mp4_muxer_select="mov_muxer"
2711 mpegts_muxer_select="adts_muxer latm_muxer"
2712 mpegtsraw_demuxer_select="mpegts_demuxer"
2713 mxf_d10_muxer_select="mxf_muxer"
2714 mxf_opatom_muxer_select="mxf_muxer"
2715 nut_muxer_select="riffenc"
2716 nuv_demuxer_select="riffdec"
2717 oga_muxer_select="ogg_muxer"
2718 ogg_demuxer_select="dirac_parse"
2719 opus_muxer_select="ogg_muxer"
2720 psp_muxer_select="mov_muxer"
2721 rtp_demuxer_select="sdp_demuxer"
2722 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2723 rtsp_demuxer_select="http_protocol rtpdec"
2724 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2725 sap_demuxer_select="sdp_demuxer"
2726 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2727 sdp_demuxer_select="rtpdec"
2728 smoothstreaming_muxer_select="ismv_muxer"
2729 spdif_muxer_select="aac_parser"
2730 spx_muxer_select="ogg_muxer"
2731 swf_demuxer_suggest="zlib"
2732 tak_demuxer_select="tak_parser"
2733 tg2_muxer_select="mov_muxer"
2734 tgp_muxer_select="mov_muxer"
2735 vobsub_demuxer_select="mpegps_demuxer"
2736 w64_demuxer_select="wav_demuxer"
2737 w64_muxer_select="wav_muxer"
2738 wav_demuxer_select="riffdec"
2739 wav_muxer_select="riffenc"
2740 webm_muxer_select="riffenc"
2741 wtv_demuxer_select="riffdec"
2742 wtv_muxer_select="riffenc"
2743 xmv_demuxer_select="riffdec"
2744 xwma_demuxer_select="riffdec"
2745
2746 # indevs / outdevs
2747 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2748 alsa_outdev_deps="alsa_asoundlib_h"
2749 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2750 avfoundation_indev_select="avfoundation"
2751 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2752 caca_outdev_deps="libcaca"
2753 decklink_outdev_deps="decklink pthreads"
2754 decklink_outdev_extralibs="-lstdc++"
2755 decklink_indev_deps="decklink pthreads"
2756 decklink_indev_extralibs="-lstdc++"
2757 dshow_indev_deps="IBaseFilter"
2758 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2759 dv1394_indev_deps="dv1394"
2760 dv1394_indev_select="dv_demuxer"
2761 fbdev_indev_deps="linux_fb_h"
2762 fbdev_outdev_deps="linux_fb_h"
2763 gdigrab_indev_deps="CreateDIBSection"
2764 gdigrab_indev_extralibs="-lgdi32"
2765 gdigrab_indev_select="bmp_decoder"
2766 iec61883_indev_deps="libiec61883"
2767 jack_indev_deps="jack_jack_h sem_timedwait"
2768 lavfi_indev_deps="avfilter"
2769 libcdio_indev_deps="libcdio"
2770 libdc1394_indev_deps="libdc1394"
2771 libv4l2_indev_deps="libv4l2"
2772 openal_indev_deps="openal"
2773 opengl_outdev_deps="opengl"
2774 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2775 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2776 pulse_indev_deps="libpulse"
2777 pulse_outdev_deps="libpulse"
2778 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2779 qtkit_indev_select="qtkit"
2780 sdl_outdev_deps="sdl"
2781 sndio_indev_deps="sndio_h"
2782 sndio_outdev_deps="sndio_h"
2783 v4l_indev_deps="linux_videodev_h"
2784 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2785 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2786 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2787 vfwcap_indev_extralibs="-lavicap32"
2788 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2789 xv_outdev_extralibs="-lXv -lX11 -lXext"
2790 x11grab_indev_deps="x11grab"
2791 x11grab_xcb_indev_deps="libxcb"
2792
2793 # protocols
2794 async_protocol_deps="threads"
2795 bluray_protocol_deps="libbluray"
2796 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2797 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2798 ffrtmpcrypt_protocol_select="tcp_protocol"
2799 ffrtmphttp_protocol_deps="!librtmp_protocol"
2800 ffrtmphttp_protocol_select="http_protocol"
2801 ftp_protocol_select="tcp_protocol"
2802 gopher_protocol_select="network"
2803 http_protocol_select="tcp_protocol"
2804 httpproxy_protocol_select="tcp_protocol"
2805 https_protocol_select="tls_protocol"
2806 icecast_protocol_select="http_protocol"
2807 librtmp_protocol_deps="librtmp"
2808 librtmpe_protocol_deps="librtmp"
2809 librtmps_protocol_deps="librtmp"
2810 librtmpt_protocol_deps="librtmp"
2811 librtmpte_protocol_deps="librtmp"
2812 libsmbclient_protocol_deps="libsmbclient gplv3"
2813 libssh_protocol_deps="libssh"
2814 mmsh_protocol_select="http_protocol"
2815 mmst_protocol_select="network"
2816 rtmp_protocol_deps="!librtmp_protocol"
2817 rtmp_protocol_select="tcp_protocol"
2818 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2819 rtmps_protocol_deps="!librtmp_protocol"
2820 rtmps_protocol_select="tls_protocol"
2821 rtmpt_protocol_select="ffrtmphttp_protocol"
2822 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2823 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2824 rtp_protocol_select="udp_protocol"
2825 sctp_protocol_deps="struct_sctp_event_subscribe"
2826 sctp_protocol_select="network"
2827 srtp_protocol_select="rtp_protocol"
2828 tcp_protocol_select="network"
2829 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2830 tls_gnutls_protocol_select="tcp_protocol"
2831 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2832 tls_openssl_protocol_select="tcp_protocol"
2833 tls_schannel_protocol_deps="schannel"
2834 tls_schannel_protocol_select="tcp_protocol"
2835 tls_securetransport_protocol_deps="securetransport"
2836 tls_securetransport_protocol_select="tcp_protocol"
2837 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2838 udp_protocol_select="network"
2839 udplite_protocol_select="network"
2840 unix_protocol_deps="sys_un_h"
2841 unix_protocol_select="network"
2842
2843 # filters
2844 amovie_filter_deps="avcodec avformat"
2845 aresample_filter_deps="swresample"
2846 ass_filter_deps="libass"
2847 asyncts_filter_deps="avresample"
2848 atempo_filter_deps="avcodec"
2849 atempo_filter_select="rdft"
2850 azmq_filter_deps="libzmq"
2851 blackframe_filter_deps="gpl"
2852 boxblur_filter_deps="gpl"
2853 bs2b_filter_deps="libbs2b"
2854 colormatrix_filter_deps="gpl"
2855 cover_rect_filter_deps="avcodec avformat gpl"
2856 cropdetect_filter_deps="gpl"
2857 delogo_filter_deps="gpl"
2858 deshake_filter_select="pixelutils"
2859 drawtext_filter_deps="libfreetype"
2860 ebur128_filter_deps="gpl"
2861 eq_filter_deps="gpl"
2862 fftfilt_filter_deps="avcodec"
2863 fftfilt_filter_select="rdft"
2864 flite_filter_deps="libflite"
2865 find_rect_filter_deps="avcodec avformat gpl"
2866 frei0r_filter_deps="frei0r dlopen"
2867 frei0r_src_filter_deps="frei0r dlopen"
2868 fspp_filter_deps="gpl"
2869 geq_filter_deps="gpl"
2870 histeq_filter_deps="gpl"
2871 hqdn3d_filter_deps="gpl"
2872 interlace_filter_deps="gpl"
2873 kerndeint_filter_deps="gpl"
2874 ladspa_filter_deps="ladspa dlopen"
2875 mcdeint_filter_deps="avcodec gpl"
2876 movie_filter_deps="avcodec avformat"
2877 mpdecimate_filter_deps="gpl"
2878 mpdecimate_filter_select="pixelutils"
2879 mptestsrc_filter_deps="gpl"
2880 negate_filter_deps="lut_filter"
2881 perspective_filter_deps="gpl"
2882 pp7_filter_deps="gpl"
2883 ocr_filter_deps="libtesseract"
2884 ocv_filter_deps="libopencv"
2885 owdenoise_filter_deps="gpl"
2886 pan_filter_deps="swresample"
2887 phase_filter_deps="gpl"
2888 pp_filter_deps="gpl postproc"
2889 pullup_filter_deps="gpl"
2890 removelogo_filter_deps="avcodec avformat swscale"
2891 repeatfields_filter_deps="gpl"
2892 resample_filter_deps="avresample"
2893 rubberband_filter_deps="librubberband"
2894 sab_filter_deps="gpl swscale"
2895 scale_filter_deps="swscale"
2896 scale2ref_filter_deps="swscale"
2897 select_filter_select="pixelutils"
2898 smartblur_filter_deps="gpl swscale"
2899 showcqt_filter_deps="avcodec avformat swscale"
2900 showcqt_filter_select="fft"
2901 showfreqs_filter_deps="avcodec"
2902 showfreqs_filter_select="fft"
2903 showspectrum_filter_deps="avcodec"
2904 showspectrum_filter_select="fft"
2905 showspectrumpic_filter_deps="avcodec"
2906 showspectrumpic_filter_select="fft"
2907 sofalizer_filter_deps="netcdf avcodec"
2908 sofalizer_filter_select="fft"
2909 spectrumsynth_filter_deps="avcodec"
2910 spectrumsynth_filter_select="fft"
2911 spp_filter_deps="gpl avcodec"
2912 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2913 stereo3d_filter_deps="gpl"
2914 subtitles_filter_deps="avformat avcodec libass"
2915 super2xsai_filter_deps="gpl"
2916 tinterlace_filter_deps="gpl"
2917 vidstabdetect_filter_deps="libvidstab"
2918 vidstabtransform_filter_deps="libvidstab"
2919 pixfmts_super2xsai_test_deps="super2xsai_filter"
2920 tinterlace_merge_test_deps="tinterlace_filter"
2921 tinterlace_pad_test_deps="tinterlace_filter"
2922 uspp_filter_deps="gpl avcodec"
2923 zmq_filter_deps="libzmq"
2924 zoompan_filter_deps="swscale"
2925 zscale_filter_deps="libzimg"
2926
2927 # examples
2928 avio_reading="avformat avcodec avutil"
2929 avio_dir_cmd="avformat avutil"
2930 avcodec_example_deps="avcodec avutil"
2931 decoding_encoding_example_deps="avcodec avformat avutil"
2932 demuxing_decoding_example_deps="avcodec avformat avutil"
2933 extract_mvs_example_deps="avcodec avformat avutil"
2934 filter_audio_example_deps="avfilter avutil"
2935 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2936 filtering_video_example_deps="avfilter avcodec avformat avutil"
2937 metadata_example_deps="avformat avutil"
2938 muxing_example_deps="avcodec avformat avutil swscale"
2939 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2940 remuxing_example_deps="avcodec avformat avutil"
2941 resampling_audio_example_deps="avutil swresample"
2942 scaling_video_example_deps="avutil swscale"
2943 transcode_aac_example_deps="avcodec avformat swresample"
2944 transcoding_example_deps="avfilter avcodec avformat avutil"
2945
2946 # libraries, in linking order
2947 avcodec_deps="avutil"
2948 avdevice_deps="avformat avcodec avutil"
2949 avfilter_deps="avutil"
2950 avformat_deps="avcodec avutil"
2951 avresample_deps="avutil"
2952 postproc_deps="avutil gpl"
2953 swresample_deps="avutil"
2954 swscale_deps="avutil"
2955
2956 # programs
2957 ffmpeg_deps="avcodec avfilter avformat swresample"
2958 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2959                null_filter
2960                setpts_filter trim_filter"
2961 ffplay_deps="avcodec avformat swscale swresample sdl"
2962 ffplay_libs='$sdl_libs'
2963 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2964 ffprobe_deps="avcodec avformat"
2965 ffserver_deps="avformat fork sarestart"
2966 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2967
2968 # documentation
2969 podpages_deps="perl"
2970 manpages_deps="perl pod2man"
2971 htmlpages_deps="perl"
2972 htmlpages_deps_any="makeinfo_html texi2html"
2973 txtpages_deps="perl makeinfo"
2974 doc_deps_any="manpages htmlpages podpages txtpages"
2975
2976 # default parameters
2977
2978 logfile="config.log"
2979
2980 # installation paths
2981 prefix_default="/usr/local"
2982 bindir_default='${prefix}/bin'
2983 datadir_default='${prefix}/share/ffmpeg'
2984 docdir_default='${prefix}/share/doc/ffmpeg'
2985 incdir_default='${prefix}/include'
2986 libdir_default='${prefix}/lib'
2987 mandir_default='${prefix}/share/man'
2988
2989 # toolchain
2990 ar_default="ar"
2991 cc_default="gcc"
2992 cxx_default="g++"
2993 host_cc_default="gcc"
2994 cp_f="cp -f"
2995 doxygen_default="doxygen"
2996 install="install"
2997 ln_s="ln -s -f"
2998 nm_default="nm -g"
2999 objformat="elf"
3000 pkg_config_default=pkg-config
3001 ranlib_default="ranlib"
3002 strip_default="strip"
3003 yasmexe_default="yasm"
3004 windres_default="windres"
3005
3006 # OS
3007 target_os_default=$(tolower $(uname -s))
3008 host_os=$target_os_default
3009
3010 # machine
3011 if test "$target_os_default" = aix; then
3012     arch_default=$(uname -p)
3013     strip_default="strip -X32_64"
3014 else
3015     arch_default=$(uname -m)
3016 fi
3017 cpu="generic"
3018 intrinsics="none"
3019
3020 # configurable options
3021 enable $PROGRAM_LIST
3022 enable $DOCUMENT_LIST
3023 enable $EXAMPLE_LIST
3024 enable $(filter_out avresample $LIBRARY_LIST)
3025 enable stripping
3026
3027 enable asm
3028 enable debug
3029 enable doc
3030 enable faan faandct faanidct
3031 enable optimizations
3032 enable runtime_cpudetect
3033 enable safe_bitstream_reader
3034 enable static
3035 enable swscale_alpha
3036 enable valgrind_backtrace
3037
3038 sws_max_filter_size_default=256
3039 set_default sws_max_filter_size
3040
3041 # Enable hwaccels by default.
3042 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3043 enable xlib
3044
3045 # build settings
3046 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3047 LIBPREF="lib"
3048 LIBSUF=".a"
3049 FULLNAME='$(NAME)$(BUILDSUF)'
3050 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3051 SLIBPREF="lib"
3052 SLIBSUF=".so"
3053 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3054 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3055 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3056 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3057 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3058 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3059
3060 asflags_filter=echo
3061 cflags_filter=echo
3062 ldflags_filter=echo
3063
3064 AS_C='-c'
3065 AS_O='-o $@'
3066 CC_C='-c'
3067 CC_E='-E -o $@'
3068 CC_O='-o $@'
3069 CXX_C='-c'
3070 CXX_O='-o $@'
3071 OBJCC_C='-c'
3072 OBJCC_E='-E -o $@'
3073 OBJCC_O='-o $@'
3074 LD_O='-o $@'
3075 LD_LIB='-l%'
3076 LD_PATH='-L'
3077 HOSTCC_C='-c'
3078 HOSTCC_E='-E -o $@'
3079 HOSTCC_O='-o $@'
3080 HOSTLD_O='-o $@'
3081
3082 host_libs='-lm'
3083 host_cflags_filter=echo
3084 host_ldflags_filter=echo
3085
3086 target_path='$(CURDIR)'
3087
3088 # since the object filename is not given with the -MM flag, the compiler
3089 # is only able to print the basename, and we must add the path ourselves
3090 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3091 DEPFLAGS='-MM'
3092
3093 # find source path
3094 if test -f configure; then
3095     source_path=.
3096 else
3097     source_path=$(cd $(dirname "$0"); pwd)
3098     case "$source_path" in
3099         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3100     esac
3101     test -e "$source_path/config.h" &&
3102         die "Out of tree builds are impossible with config.h in source dir."
3103 fi
3104
3105 for v in "$@"; do
3106     r=${v#*=}
3107     l=${v%"$r"}
3108     r=$(sh_quote "$r")
3109     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3110 done
3111
3112 find_things(){
3113     thing=$1
3114     pattern=$2
3115     file=$source_path/$3
3116     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3117 }
3118
3119 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3120 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3121 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3122 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3123 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3124 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3125 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3126 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3127 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3128 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3129 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3130
3131 ALL_COMPONENTS="
3132     $BSF_LIST
3133     $DECODER_LIST
3134     $DEMUXER_LIST
3135     $ENCODER_LIST
3136     $FILTER_LIST
3137     $HWACCEL_LIST
3138     $INDEV_LIST
3139     $MUXER_LIST
3140     $OUTDEV_LIST
3141     $PARSER_LIST
3142     $PROTOCOL_LIST
3143 "
3144
3145 for n in $COMPONENT_LIST; do
3146     v=$(toupper ${n%s})_LIST
3147     eval enable \$$v
3148     eval ${n}_if_any="\$$v"
3149 done
3150
3151 enable $ARCH_EXT_LIST
3152
3153 die_unknown(){
3154     echo "Unknown option \"$1\"."
3155     echo "See $0 --help for available options."
3156     exit 1
3157 }
3158
3159 print_in_columns() {
3160     cols=$(expr $ncols / 24)
3161     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3162 }
3163
3164 show_list() {
3165     suffix=_$1
3166     shift
3167     echo $* | sed s/$suffix//g | print_in_columns
3168     exit 0
3169 }
3170
3171 rand_list(){
3172     IFS=', '
3173     set -- $*
3174     unset IFS
3175     for thing; do
3176         comp=${thing%:*}
3177         prob=${thing#$comp}
3178         prob=${prob#:}
3179         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3180         echo "prob ${prob:-0.5}"
3181         printf '%s\n' $comp
3182     done
3183 }
3184
3185 do_random(){
3186     action=$1
3187     shift
3188     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3189     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3190 }
3191
3192 for opt do
3193     optval="${opt#*=}"
3194     case "$opt" in
3195         --extra-ldflags=*)
3196             add_ldflags $optval
3197         ;;
3198         --extra-ldexeflags=*)
3199             add_ldexeflags $optval
3200         ;;
3201         --extra-ldlibflags=*)
3202             add_ldlibflags $optval
3203         ;;
3204         --extra-libs=*)
3205             add_extralibs $optval
3206         ;;
3207         --disable-devices)
3208             disable $INDEV_LIST $OUTDEV_LIST
3209         ;;
3210         --enable-debug=*)
3211             debuglevel="$optval"
3212         ;;
3213         --disable-programs)
3214             disable $PROGRAM_LIST
3215         ;;
3216         --disable-everything)
3217             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3218         ;;
3219         --disable-all)
3220             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3221             disable $LIBRARY_LIST $PROGRAM_LIST doc
3222             enable avutil
3223         ;;
3224         --enable-random|--disable-random)
3225             action=${opt%%-random}
3226             do_random ${action#--} $COMPONENT_LIST
3227         ;;
3228         --enable-random=*|--disable-random=*)
3229             action=${opt%%-random=*}
3230             do_random ${action#--} $optval
3231         ;;
3232         --enable-*=*|--disable-*=*)
3233             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3234             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3235             eval list=\$$(toupper $thing)_LIST
3236             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3237             list=$(filter "$name" $list)
3238             [ "$list" = "" ] && warn "Option $opt did not match anything"
3239             $action $list
3240         ;;
3241         --enable-?*|--disable-?*)
3242             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3243             if is_in $option $COMPONENT_LIST; then
3244                 test $action = disable && action=unset
3245                 eval $action \$$(toupper ${option%s})_LIST
3246             elif is_in $option $CMDLINE_SELECT; then
3247                 $action $option
3248             else
3249                 die_unknown $opt
3250             fi
3251         ;;
3252         --list-*)
3253             NAME="${opt#--list-}"
3254             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3255             NAME=${NAME%s}
3256             eval show_list $NAME \$$(toupper $NAME)_LIST
3257         ;;
3258         --help|-h) show_help
3259         ;;
3260         --fatal-warnings) enable fatal_warnings
3261         ;;
3262         *)
3263             optname="${opt%%=*}"
3264             optname="${optname#--}"
3265             optname=$(echo "$optname" | sed 's/-/_/g')
3266             if is_in $optname $CMDLINE_SET; then
3267                 eval $optname='$optval'
3268             elif is_in $optname $CMDLINE_APPEND; then
3269                 append $optname "$optval"
3270             else
3271                 die_unknown $opt
3272             fi
3273         ;;
3274     esac
3275 done
3276
3277 for e in $env; do
3278     eval "export $e"
3279 done
3280
3281 disabled logging && logfile=/dev/null
3282
3283 # Disable all the library-specific components if the library itself
3284 # is disabled, see AVCODEC_LIST and following _LIST variables.
3285
3286 disable_components(){
3287     disabled ${1} && disable $(
3288         eval components="\$$(toupper ${1})_COMPONENTS"
3289         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3290     )
3291 }
3292
3293 map 'disable_components $v' $LIBRARY_LIST
3294
3295 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3296 set >> $logfile
3297
3298 test -n "$valgrind" && toolchain="valgrind-memcheck"
3299
3300 case "$toolchain" in
3301     clang-asan)
3302         cc_default="clang"
3303         add_cflags  -fsanitize=address
3304         add_ldflags -fsanitize=address
3305     ;;
3306     clang-tsan)
3307         cc_default="clang"
3308         add_cflags  -fsanitize=thread -pie
3309         add_ldflags -fsanitize=thread -pie
3310     ;;
3311     clang-usan)
3312         cc_default="clang"
3313         add_cflags  -fsanitize=undefined
3314         add_ldflags -fsanitize=undefined
3315     ;;
3316     gcc-asan)
3317         cc_default="gcc"
3318         add_cflags  -fsanitize=address
3319         add_ldflags -fsanitize=address
3320     ;;
3321     gcc-tsan)
3322         cc_default="gcc"
3323         add_cflags  -fsanitize=thread -pie -fPIC
3324         add_ldflags -fsanitize=thread -pie -fPIC
3325     ;;
3326     gcc-usan)
3327         cc_default="gcc"
3328         add_cflags  -fsanitize=undefined
3329         add_ldflags -fsanitize=undefined
3330     ;;
3331     valgrind-massif)
3332         target_exec_default=${valgrind:-"valgrind"}
3333         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"
3334     ;;
3335     valgrind-memcheck)
3336         target_exec_default=${valgrind:-"valgrind"}
3337         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3338     ;;
3339     msvc)
3340         # Check whether the current MSVC version needs the C99 converter.
3341         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3342         # support enough of C99 to build ffmpeg. Default to the new
3343         # behaviour if the regexp was unable to match anything, since this
3344         # successfully parses the version number of existing supported
3345         # versions that require the converter (MSVC 2010 and 2012).
3346         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3347         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3348             cc_default="cl"
3349         else
3350             cc_default="c99wrap cl"
3351         fi
3352         ld_default="$source_path/compat/windows/mslink"
3353         nm_default="dumpbin -symbols"
3354         ar_default="lib"
3355         case "$arch" in
3356         arm*)
3357             as_default="armasm"
3358             ;;
3359         esac
3360         target_os_default="win32"
3361         # Use a relative path for TMPDIR. This makes sure all the
3362         # ffconf temp files are written with a relative path, avoiding
3363         # issues with msys/win32 path conversion for MSVC parameters
3364         # such as -Fo<file> or -out:<file>.
3365         TMPDIR=.
3366     ;;
3367     icl)
3368         cc_default="icl"
3369         ld_default="xilink"
3370         nm_default="dumpbin -symbols"
3371         ar_default="xilib"
3372         target_os_default="win32"
3373         TMPDIR=.
3374     ;;
3375     gcov)
3376         add_cflags  -fprofile-arcs -ftest-coverage
3377         add_ldflags -fprofile-arcs -ftest-coverage
3378     ;;
3379     hardened)
3380         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3381         add_cflags   -fno-strict-overflow -fstack-protector-all
3382         add_ldflags  -Wl,-z,relro -Wl,-z,now
3383     ;;
3384     ?*)
3385         die "Unknown toolchain $toolchain"
3386     ;;
3387 esac
3388
3389 test -n "$cross_prefix" && enable cross_compile
3390
3391 if enabled cross_compile; then
3392     test -n "$arch" && test -n "$target_os" ||
3393         die "Must specify target arch and OS when cross-compiling"
3394 fi
3395
3396 ar_default="${cross_prefix}${ar_default}"
3397 cc_default="${cross_prefix}${cc_default}"
3398 cxx_default="${cross_prefix}${cxx_default}"
3399 nm_default="${cross_prefix}${nm_default}"
3400 pkg_config_default="${cross_prefix}${pkg_config_default}"
3401 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3402     ranlib_default="${cross_prefix}${ranlib_default} -D"
3403 else
3404     ranlib_default="${cross_prefix}${ranlib_default}"
3405 fi
3406 strip_default="${cross_prefix}${strip_default}"
3407 windres_default="${cross_prefix}${windres_default}"
3408
3409 sysinclude_default="${sysroot}/usr/include"
3410
3411 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3412     target_exec target_os yasmexe
3413 enabled cross_compile || host_cc_default=$cc
3414 set_default host_cc
3415
3416 pkg_config_fail_message=""
3417 if ! $pkg_config --version >/dev/null 2>&1; then
3418     warn "$pkg_config not found, library detection may fail."
3419     pkg_config=false
3420 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3421     pkg_config_fail_message="
3422 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3423 fi
3424
3425 if test $doxygen != $doxygen_default && \
3426   ! $doxygen --version >/dev/null 2>&1; then
3427     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3428 fi
3429
3430 exesuf() {
3431     case $1 in
3432         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3433     esac
3434 }
3435
3436 EXESUF=$(exesuf $target_os)
3437 HOSTEXESUF=$(exesuf $host_os)
3438
3439 # set temporary file name
3440 : ${TMPDIR:=$TEMPDIR}
3441 : ${TMPDIR:=$TMP}
3442 : ${TMPDIR:=/tmp}
3443
3444 if [ -n "$tempprefix" ] ; then
3445     mktemp(){
3446         echo $tempprefix.${HOSTNAME}.${UID}
3447     }
3448 elif ! check_cmd mktemp -u XXXXXX; then
3449     # simple replacement for missing mktemp
3450     # NOT SAFE FOR GENERAL USE
3451     mktemp(){
3452         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3453     }
3454 fi
3455
3456 tmpfile(){
3457     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3458         (set -C; exec > $tmp) 2>/dev/null ||
3459         die "Unable to create temporary file in $TMPDIR."
3460     append TMPFILES $tmp
3461     eval $1=$tmp
3462 }
3463
3464 trap 'rm -f -- $TMPFILES' EXIT
3465
3466 tmpfile TMPASM .asm
3467 tmpfile TMPC   .c
3468 tmpfile TMPCPP .cpp
3469 tmpfile TMPE   $EXESUF
3470 tmpfile TMPH   .h
3471 tmpfile TMPM   .m
3472 tmpfile TMPO   .o
3473 tmpfile TMPS   .S
3474 tmpfile TMPSH  .sh
3475 tmpfile TMPV   .ver
3476
3477 unset -f mktemp
3478
3479 chmod +x $TMPE
3480
3481 # make sure we can execute files in $TMPDIR
3482 cat > $TMPSH 2>> $logfile <<EOF
3483 #! /bin/sh
3484 EOF
3485 chmod +x $TMPSH >> $logfile 2>&1
3486 if ! $TMPSH >> $logfile 2>&1; then
3487     cat <<EOF
3488 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3489 variable to another directory and make sure that it is not mounted noexec.
3490 EOF
3491     die "Sanity test failed."
3492 fi
3493
3494 armasm_flags(){
3495     for flag; do
3496         case $flag in
3497             # Filter out MSVC cl.exe options from cflags that shouldn't
3498             # be passed to gas-preprocessor
3499             -M[TD]*)                                            ;;
3500             *)                  echo $flag                      ;;
3501         esac
3502    done
3503 }
3504
3505 ccc_flags(){
3506     for flag; do
3507         case $flag in
3508             -std=c99)           echo -c99                       ;;
3509             -mcpu=*)            echo -arch ${flag#*=}           ;;
3510             -mieee)             echo -ieee                      ;;
3511             -O*|-fast)          echo $flag                      ;;
3512             -fno-math-errno)    echo -assume nomath_errno       ;;
3513             -g)                 echo -g3                        ;;
3514             -Wall)              echo -msg_enable level2         ;;
3515             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3516             -Wl,*)              echo $flag                      ;;
3517             -f*|-W*)                                            ;;
3518             *)                  echo $flag                      ;;
3519         esac
3520    done
3521 }
3522
3523 cparser_flags(){
3524     for flag; do
3525         case $flag in
3526             -Wno-switch)             echo -Wno-switch-enum ;;
3527             -Wno-format-zero-length) ;;
3528             -Wdisabled-optimization) ;;
3529             -Wno-pointer-sign)       echo -Wno-other ;;
3530             *)                       echo $flag ;;
3531         esac
3532     done
3533 }
3534
3535 msvc_common_flags(){
3536     for flag; do
3537         case $flag in
3538             # In addition to specifying certain flags under the compiler
3539             # specific filters, they must be specified here as well or else the
3540             # generic catch all at the bottom will print the original flag.
3541             -Wall)                ;;
3542             -std=c99)             ;;
3543             # Common flags
3544             -fomit-frame-pointer) ;;
3545             -g)                   echo -Z7 ;;
3546             -fno-math-errno)      ;;
3547             -fno-common)          ;;
3548             -fno-signed-zeros)    ;;
3549             -fPIC)                ;;
3550             -mthumb)              ;;
3551             -march=*)             ;;
3552             -lz)                  echo zlib.lib ;;
3553             -lavifil32)           echo vfw32.lib ;;
3554             -lavicap32)           echo vfw32.lib user32.lib ;;
3555             -l*)                  echo ${flag#-l}.lib ;;
3556             -LARGEADDRESSAWARE)   echo $flag ;;
3557             -L*)                  echo -libpath:${flag#-L} ;;
3558             *)                    echo $flag ;;
3559         esac
3560     done
3561 }
3562
3563 msvc_flags(){
3564     msvc_common_flags "$@"
3565     for flag; do
3566         case $flag in
3567             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3568                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3569                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3570                                        -wd4307 \
3571                                        -wd4273 -wd4554 -wd4701 ;;
3572         esac
3573     done
3574 }
3575
3576 icl_flags(){
3577     msvc_common_flags "$@"
3578     for flag; do
3579         case $flag in
3580             # Despite what Intel's documentation says -Wall, which is supported
3581             # on Windows, does enable remarks so disable them here.
3582             -Wall)                echo $flag -Qdiag-disable:remark ;;
3583             -std=c99)             echo -Qstd=c99 ;;
3584             -flto)                echo -ipo ;;
3585         esac
3586     done
3587 }
3588
3589 icc_flags(){
3590     for flag; do
3591         case $flag in
3592             -flto)                echo -ipo ;;
3593             *)                    echo $flag ;;
3594         esac
3595     done
3596 }
3597
3598 pgi_flags(){
3599     for flag; do
3600         case $flag in
3601             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3602             -fomit-frame-pointer) echo -Mnoframe ;;
3603             -g)                   echo -gopt ;;
3604             *)                    echo $flag ;;
3605         esac
3606     done
3607 }
3608
3609 suncc_flags(){
3610     for flag; do
3611         case $flag in
3612             -march=*|-mcpu=*)
3613                 case "${flag#*=}" in
3614                     native)                   echo -xtarget=native       ;;
3615                     v9|niagara)               echo -xarch=sparc          ;;
3616                     ultrasparc)               echo -xarch=sparcvis       ;;
3617                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3618                     i586|pentium)             echo -xchip=pentium        ;;
3619                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3620                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3621                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3622                     pentium4*)          echo -xtarget=pentium4           ;;
3623                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3624                     *-sse3)             echo -xarch=sse3                 ;;
3625                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3626                     bonnell)                   echo -xarch=ssse3         ;;
3627                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3628                     westmere)                  echo -xtarget=westmere    ;;
3629                     silvermont)                echo -xarch=sse4_2        ;;
3630                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3631                     core-avx*|ivybridge|haswell|broadwell)
3632                                                echo -xarch=avx           ;;
3633                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3634                     btver1)                    echo -xarch=amdsse4a      ;;
3635                     btver2|bdver*)             echo -xarch=avx           ;;
3636                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3637                     k8|opteron|athlon64|athlon-fx)
3638                                                echo -xarch=sse2a         ;;
3639                     athlon*)                   echo -xarch=pentium_proa  ;;
3640                 esac
3641                 ;;
3642             -std=c99)             echo -xc99              ;;
3643             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3644             -fPIC)                echo -KPIC -xcode=pic32 ;;
3645             -W*,*)                echo $flag              ;;
3646             -f*-*|-W*|-mimpure-text)                      ;;
3647             -shared)              echo -G                 ;;
3648             *)                    echo $flag              ;;
3649         esac
3650     done
3651 }
3652
3653 tms470_flags(){
3654     for flag; do
3655         case $flag in
3656             -march=*|-mcpu=*)
3657                 case "${flag#*=}" in
3658                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3659                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3660                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3661                     armv6*|arm11*)          echo -mv=6   ;;
3662                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3663                                             echo -mv=5e  ;;
3664                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3665                 esac
3666                 ;;
3667             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3668             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3669             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3670             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3671             -msoft-float)   echo --float_support=vfplib       ;;
3672             -O[0-3]|-mf=*)  echo $flag                        ;;
3673             -g)             echo -g -mn                       ;;
3674             -pds=*)         echo $flag                        ;;
3675             -D*|-I*)        echo $flag                        ;;
3676             --gcc|--abi=*)  echo $flag                        ;;
3677             -me)            echo $flag                        ;;
3678         esac
3679     done
3680 }
3681
3682 probe_cc(){
3683     pfx=$1
3684     _cc=$2
3685     first=$3
3686
3687     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3688     unset _ld_o _ldflags _ld_lib _ld_path
3689     unset _depflags _DEPCMD _DEPFLAGS
3690     _flags_filter=echo
3691
3692     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3693         true # no-op to avoid reading stdin in following checks
3694     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3695         _type=llvm_gcc
3696         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3697         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3698         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3699         _cflags_speed='-O3'
3700         _cflags_size='-Os'
3701     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3702         _type=gcc
3703         gcc_version=$($_cc --version | head -n1)
3704         gcc_basever=$($_cc -dumpversion)
3705         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3706         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3707         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3708         case $gcc_basever in
3709             2) ;;
3710             2.*) ;;
3711             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3712         esac
3713         if [ "$first" = true ]; then
3714             case $gcc_basever in
3715                 4.2*)
3716                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3717             esac
3718         fi
3719         _cflags_speed='-O3'
3720         _cflags_size='-Os'
3721     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3722         _type=icc
3723         _ident=$($_cc --version | head -n1)
3724         _depflags='-MMD'
3725         _cflags_speed='-O3'
3726         _cflags_size='-Os'
3727         _cflags_noopt='-O1'
3728         _flags_filter=icc_flags
3729     elif $_cc -v 2>&1 | grep -q xlc; then
3730         _type=xlc
3731         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3732         _cflags_speed='-O5'
3733         _cflags_size='-O5 -qcompact'
3734     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3735         _type=ccc
3736         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3737         _DEPFLAGS='-M'
3738         _cflags_speed='-fast'
3739         _cflags_size='-O1'
3740         _flags_filter=ccc_flags
3741     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3742         test -d "$sysroot" || die "No valid sysroot specified."
3743         _type=armcc
3744         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3745         armcc_conf="$PWD/armcc.conf"
3746         $_cc --arm_linux_configure                 \
3747              --arm_linux_config_file="$armcc_conf" \
3748              --configure_sysroot="$sysroot"        \
3749              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3750              die "Error creating armcc configuration file."
3751         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3752         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3753         as_default="${cross_prefix}gcc"
3754         _depflags='-MMD'
3755         _cflags_speed='-O3'
3756         _cflags_size='-Os'
3757     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3758         _type=tms470
3759         _ident=$($_cc -version | head -n1 | tr -s ' ')
3760         _flags='--gcc --abi=eabi -me'
3761         _cc_e='-ppl -fe=$@'
3762         _cc_o='-fe=$@'
3763         _depflags='-ppa -ppd=$(@:.o=.d)'
3764         _cflags_speed='-O3 -mf=5'
3765         _cflags_size='-O3 -mf=2'
3766         _flags_filter=tms470_flags
3767     elif $_cc -v 2>&1 | grep -q clang; then
3768         _type=clang
3769         _ident=$($_cc --version 2>/dev/null | head -n1)
3770         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3771         _cflags_speed='-O3'
3772         _cflags_size='-Os'
3773     elif $_cc -V 2>&1 | grep -q Sun; then
3774         _type=suncc
3775         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3776         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3777         _DEPFLAGS='-xM1 -xc99'
3778         _ldflags='-std=c99'
3779         _cflags_speed='-O5'
3780         _cflags_size='-O5 -xspace'
3781         _flags_filter=suncc_flags
3782     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3783         _type=pathscale
3784         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3785         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3786         _cflags_speed='-O2'
3787         _cflags_size='-Os'
3788         _flags_filter='filter_out -Wdisabled-optimization'
3789     elif $_cc -v 2>&1 | grep -q Open64; then
3790         _type=open64
3791         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3792         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3793         _cflags_speed='-O2'
3794         _cflags_size='-Os'
3795         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3796     elif $_cc -V 2>&1 | grep -q Portland; then
3797         _type=pgi
3798         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3799         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3800         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3801         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3802         _cflags_noopt="-O"
3803         _flags_filter=pgi_flags
3804     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3805         _type=armasm
3806         _ident=$($_cc | head -n1)
3807         # 4509: "This form of conditional instruction is deprecated"
3808         _flags="-nologo -ignore 4509"
3809         _flags_filter=armasm_flags
3810     elif $_cc 2>&1 | grep -q Intel; then
3811         _type=icl
3812         _ident=$($_cc 2>&1 | head -n1)
3813         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3814         # Not only is O3 broken on 13.x+ but it is slower on all previous
3815         # versions (tested) as well.
3816         _cflags_speed="-O2"
3817         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3818         if $_cc 2>&1 | grep -q Linker; then
3819             _ld_o='-out:$@'
3820         else
3821             _ld_o='-Fe$@'
3822         fi
3823         _cc_o='-Fo$@'
3824         _cc_e='-P'
3825         _flags_filter=icl_flags
3826         _ld_lib='lib%.a'
3827         _ld_path='-libpath:'
3828         # -Qdiag-error to make icl error when seeing certain unknown arguments
3829         _flags='-nologo -Qdiag-error:4044,10157'
3830         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3831         # with MSVC which enables it by default.
3832         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3833         disable stripping
3834     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3835         _type=msvc
3836         _ident=$($_cc 2>&1 | head -n1)
3837         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3838         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3839         _cflags_speed="-O2"
3840         _cflags_size="-O1"
3841         if $_cc -nologo- 2>&1 | grep -q Linker; then
3842             _ld_o='-out:$@'
3843         else
3844             _ld_o='-Fe$@'
3845         fi
3846         _cc_o='-Fo$@'
3847         _cc_e='-P -Fi$@'
3848         _flags_filter=msvc_flags
3849         _ld_lib='lib%.a'
3850         _ld_path='-libpath:'
3851         _flags='-nologo'
3852         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3853         disable stripping
3854     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3855         _type=cparser
3856         _ident=$($_cc --version | head -n1)
3857         _depflags='-MMD'
3858         _cflags_speed='-O4'
3859         _cflags_size='-O2'
3860         _flags_filter=cparser_flags
3861     fi
3862
3863     eval ${pfx}_type=\$_type
3864     eval ${pfx}_ident=\$_ident
3865 }
3866
3867 set_ccvars(){
3868     eval ${1}_C=\${_cc_c-\${${1}_C}}
3869     eval ${1}_E=\${_cc_e-\${${1}_E}}
3870     eval ${1}_O=\${_cc_o-\${${1}_O}}
3871
3872     if [ -n "$_depflags" ]; then
3873         eval ${1}_DEPFLAGS=\$_depflags
3874     else
3875         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3876         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3877         eval DEP${1}FLAGS=\$_flags
3878     fi
3879 }
3880
3881 probe_cc cc "$cc" "true"
3882 cflags_filter=$_flags_filter
3883 cflags_speed=$_cflags_speed
3884 cflags_size=$_cflags_size
3885 cflags_noopt=$_cflags_noopt
3886 add_cflags $_flags $_cflags
3887 cc_ldflags=$_ldflags
3888 set_ccvars CC
3889
3890 probe_cc hostcc "$host_cc"
3891 host_cflags_filter=$_flags_filter
3892 add_host_cflags  $_flags $_cflags
3893 set_ccvars HOSTCC
3894
3895 test -n "$cc_type" && enable $cc_type ||
3896     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3897
3898 : ${as_default:=$cc}
3899 : ${objcc_default:=$cc}
3900 : ${dep_cc_default:=$cc}
3901 : ${ld_default:=$cc}
3902 : ${host_ld_default:=$host_cc}
3903 set_default ar as objcc dep_cc ld host_ld windres
3904
3905 probe_cc as "$as"
3906 asflags_filter=$_flags_filter
3907 add_asflags $_flags $_cflags
3908 set_ccvars AS
3909
3910 probe_cc objcc "$objcc"
3911 objcflags_filter=$_flags_filter
3912 add_objcflags $_flags $_cflags
3913 set_ccvars OBJC
3914
3915 probe_cc ld "$ld"
3916 ldflags_filter=$_flags_filter
3917 add_ldflags $_flags $_ldflags
3918 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3919 LD_O=${_ld_o-$LD_O}
3920 LD_LIB=${_ld_lib-$LD_LIB}
3921 LD_PATH=${_ld_path-$LD_PATH}
3922
3923 probe_cc hostld "$host_ld"
3924 host_ldflags_filter=$_flags_filter
3925 add_host_ldflags $_flags $_ldflags
3926 HOSTLD_O=${_ld_o-$HOSTLD_O}
3927
3928 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3929     probe_cc depcc "$dep_cc"
3930     CCDEP=${_DEPCMD:-$DEPCMD}
3931     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3932     DEPCCFLAGS=$_flags
3933 fi
3934
3935 if $ar 2>&1 | grep -q Microsoft; then
3936     arflags="-nologo"
3937     ar_o='-out:$@'
3938 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3939     arflags="rq"
3940     ar_o='$@'
3941 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3942     arflags='-Xany -r -c'
3943     ar_o='$@'
3944 elif $ar 2>&1 | grep -q "\[D\] "; then
3945     arflags="rcD"
3946     ar_o='$@'
3947 else
3948     arflags="rc"
3949     ar_o='$@'
3950 fi
3951
3952 add_cflags $extra_cflags
3953 add_cxxflags $extra_cxxflags
3954 add_objcflags $extra_objcflags
3955 add_asflags $extra_cflags
3956
3957 if test -n "$sysroot"; then
3958     case "$cc_type" in
3959         gcc|llvm_gcc|clang)
3960             add_cppflags --sysroot="$sysroot"
3961             add_ldflags --sysroot="$sysroot"
3962 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3963             add_cppflags -isysroot "$sysroot"
3964             add_ldflags -isysroot "$sysroot"
3965         ;;
3966         tms470)
3967             add_cppflags -I"$sysinclude"
3968             add_ldflags  --sysroot="$sysroot"
3969         ;;
3970     esac
3971 fi
3972
3973 if test "$cpu" = host; then
3974     enabled cross_compile &&
3975         die "--cpu=host makes no sense when cross-compiling."
3976
3977     case "$cc_type" in
3978         gcc|llvm_gcc)
3979             check_native(){
3980                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3981                 sed -n "/cc1.*$1=/{
3982                             s/.*$1=\\([^ ]*\\).*/\\1/
3983                             p
3984                             q
3985                         }" $TMPE
3986             }
3987             cpu=$(check_native -march || check_native -mcpu)
3988         ;;
3989         clang)
3990             check_native(){
3991                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3992                 sed -n "/cc1.*-target-cpu /{
3993                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3994                             p
3995                             q
3996                         }" $TMPE
3997             }
3998             cpu=$(check_native -march)
3999         ;;
4000     esac
4001
4002     test "${cpu:-host}" = host &&
4003         die "--cpu=host not supported with compiler $cc"
4004 fi
4005
4006 # Deal with common $arch aliases
4007 case "$arch" in
4008     aarch64|arm64)
4009         arch="aarch64"
4010     ;;
4011     arm*|iPad*|iPhone*)
4012         arch="arm"
4013     ;;
4014     mips*|IP*)
4015         arch="mips"
4016     ;;
4017     parisc*|hppa*)
4018         arch="parisc"
4019     ;;
4020     "Power Macintosh"|ppc*|powerpc*)
4021         arch="ppc"
4022     ;;
4023     s390|s390x)
4024         arch="s390"
4025     ;;
4026     sh4|sh)
4027         arch="sh4"
4028     ;;
4029     sun4u|sparc*)
4030         arch="sparc"
4031     ;;
4032     tilegx|tile-gx)
4033         arch="tilegx"
4034     ;;
4035     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4036         arch="x86"
4037     ;;
4038 esac
4039
4040 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4041 enable $arch
4042
4043 # Add processor-specific flags
4044 if enabled aarch64; then
4045
4046     case $cpu in
4047         armv*)
4048             cpuflags="-march=$cpu"
4049         ;;
4050         *)
4051             cpuflags="-mcpu=$cpu"
4052         ;;
4053     esac
4054
4055 elif enabled alpha; then
4056
4057     cpuflags="-mcpu=$cpu"
4058
4059 elif enabled arm; then
4060
4061     check_arm_arch() {
4062         check_cpp_condition stddef.h \
4063             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4064             $cpuflags
4065     }
4066
4067     probe_arm_arch() {
4068         if   check_arm_arch 4;        then echo armv4;
4069         elif check_arm_arch 4T;       then echo armv4t;
4070         elif check_arm_arch 5;        then echo armv5;
4071         elif check_arm_arch 5E;       then echo armv5e;
4072         elif check_arm_arch 5T;       then echo armv5t;
4073         elif check_arm_arch 5TE;      then echo armv5te;
4074         elif check_arm_arch 5TEJ;     then echo armv5te;
4075         elif check_arm_arch 6;        then echo armv6;
4076         elif check_arm_arch 6J;       then echo armv6j;
4077         elif check_arm_arch 6K;       then echo armv6k;
4078         elif check_arm_arch 6Z;       then echo armv6z;
4079         elif check_arm_arch 6ZK;      then echo armv6zk;
4080         elif check_arm_arch 6T2;      then echo armv6t2;
4081         elif check_arm_arch 7;        then echo armv7;
4082         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4083         elif check_arm_arch 7S;       then echo armv7-a;
4084         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4085         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4086         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4087         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4088         fi
4089     }
4090
4091     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4092
4093     case $cpu in
4094         armv*)
4095             cpuflags="-march=$cpu"
4096             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4097         ;;
4098         *)
4099             cpuflags="-mcpu=$cpu"
4100             case $cpu in
4101                 cortex-a*)                               subarch=armv7a  ;;
4102                 cortex-r*)                               subarch=armv7r  ;;
4103                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4104                 arm11*)                                  subarch=armv6   ;;
4105                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4106                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4107                 *)                             subarch=$(probe_arm_arch) ;;
4108             esac
4109         ;;
4110     esac
4111
4112     case "$subarch" in
4113         armv5t*)    enable fast_clz                ;;
4114         armv[6-8]*)
4115             enable fast_clz
4116             disabled fast_unaligned || enable fast_unaligned
4117             ;;
4118     esac
4119
4120 elif enabled avr32; then
4121
4122     case $cpu in
4123         ap7[02]0[0-2])
4124             subarch="avr32_ap"
4125             cpuflags="-mpart=$cpu"
4126         ;;
4127         ap)
4128             subarch="avr32_ap"
4129             cpuflags="-march=$cpu"
4130         ;;
4131         uc3[ab]*)
4132             subarch="avr32_uc"
4133             cpuflags="-mcpu=$cpu"
4134         ;;
4135         uc)
4136             subarch="avr32_uc"
4137             cpuflags="-march=$cpu"
4138         ;;
4139     esac
4140
4141 elif enabled bfin; then
4142
4143     cpuflags="-mcpu=$cpu"
4144
4145 elif enabled mips; then
4146
4147     cpuflags="-march=$cpu"
4148
4149     case $cpu in
4150         24kc)
4151             disable mips32r6
4152             disable mips64r2
4153             disable mips64r6
4154             disable mipsfpu
4155             disable mipsdsp
4156             disable mipsdspr2
4157             disable msa
4158         ;;
4159         24kf*)
4160             disable mips32r6
4161             disable mips64r2
4162             disable mips64r6
4163             disable mipsdsp
4164             disable mipsdspr2
4165             disable msa
4166         ;;
4167         24kec|34kc|1004kc)
4168             disable mips32r6
4169             disable mips64r2
4170             disable mips64r6
4171             disable mipsfpu
4172             disable mipsdspr2
4173             disable msa
4174         ;;
4175         24kef*|34kf*|1004kf*)
4176             disable mips32r6
4177             disable mips64r2
4178             disable mips64r6
4179             disable mipsdspr2
4180             disable msa
4181         ;;
4182         74kc)
4183             disable mips32r6
4184             disable mips64r2
4185             disable mips64r6
4186             disable mipsfpu
4187             disable msa
4188         ;;
4189         74kf)
4190             disable mips32r6
4191             disable mips64r2
4192             disable mips64r6
4193             disable msa
4194         ;;
4195         p5600)
4196             disable mips32r6
4197             disable mips64r2
4198             disable mips64r6
4199             disable mipsdsp
4200             disable mipsdspr2
4201             check_cflags "-mtune=p5600" &&
4202             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4203             add_asflags "-mfp64"
4204         ;;
4205         i6400)
4206             disable mips32r2
4207             disable mips32r6
4208             disable mips64r2
4209             disable mipsdsp
4210             disable mipsdspr2
4211             check_cflags "-mtune=i6400 -mabi=64" &&
4212             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4213             check_ldflags "-mabi=64" &&
4214             add_asflags "-mfp64"
4215         ;;
4216         loongson*)
4217             disable mips32r2
4218             disable mips32r6
4219             disable mips64r2
4220             disable mips64r6
4221             disable mipsfpu
4222             disable mipsdsp
4223             disable mipsdspr2
4224             disable msa
4225             enable local_aligned_8 local_aligned_16 local_aligned_32
4226             enable simd_align_16
4227             enable fast_64bit
4228             enable fast_clz
4229             enable fast_cmov
4230             enable fast_unaligned
4231             disable aligned_stack
4232             case $cpu in
4233                 loongson3*)
4234                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4235                 ;;
4236                 loongson2e)
4237                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4238                 ;;
4239                 loongson2f)
4240                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4241                 ;;
4242             esac
4243         ;;
4244         generic)
4245             disable mips64r6
4246             disable msa
4247         ;;
4248         *)
4249             # Unknown CPU. Disable everything.
4250             warn "unknown CPU. Disabling all MIPS optimizations."
4251             disable mipsfpu
4252             disable mips32r2
4253             disable mips32r6
4254             disable mips64r2
4255             disable mips64r6
4256             disable mipsdsp
4257             disable mipsdspr2
4258             disable msa
4259         ;;
4260     esac
4261
4262 elif enabled ppc; then
4263
4264     disable ldbrx
4265
4266     case $(tolower $cpu) in
4267         601|ppc601|powerpc601)
4268             cpuflags="-mcpu=601"
4269             disable altivec
4270         ;;
4271         603*|ppc603*|powerpc603*)
4272             cpuflags="-mcpu=603"
4273             disable altivec
4274         ;;
4275         604*|ppc604*|powerpc604*)
4276             cpuflags="-mcpu=604"
4277             disable altivec
4278         ;;
4279         g3|75*|ppc75*|powerpc75*)
4280             cpuflags="-mcpu=750"
4281             disable altivec
4282         ;;
4283         g4|745*|ppc745*|powerpc745*)
4284             cpuflags="-mcpu=7450"
4285             disable vsx
4286         ;;
4287         74*|ppc74*|powerpc74*)
4288             cpuflags="-mcpu=7400"
4289             disable vsx
4290         ;;
4291         g5|970|ppc970|powerpc970)
4292             cpuflags="-mcpu=970"
4293             disable vsx
4294         ;;
4295         power[3-6]*)
4296             cpuflags="-mcpu=$cpu"
4297             disable vsx
4298         ;;
4299         power[7-8]*)
4300             cpuflags="-mcpu=$cpu"
4301         ;;
4302         cell)
4303             cpuflags="-mcpu=cell"
4304             enable ldbrx
4305             disable vsx
4306         ;;
4307         e500mc)
4308             cpuflags="-mcpu=e500mc"
4309             disable altivec
4310         ;;
4311         e500v2)
4312             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4313             disable altivec
4314             disable dcbzl
4315         ;;
4316         e500)
4317             cpuflags="-mcpu=8540 -mhard-float"
4318             disable altivec
4319             disable dcbzl
4320         ;;
4321     esac
4322
4323 elif enabled sparc; then
4324
4325     case $cpu in
4326         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4327             cpuflags="-mcpu=$cpu"
4328         ;;
4329         ultrasparc*|niagara[234])
4330             cpuflags="-mcpu=$cpu"
4331         ;;
4332     esac
4333
4334 elif enabled x86; then
4335
4336     case $cpu in
4337         i[345]86|pentium)
4338             cpuflags="-march=$cpu"
4339             disable i686
4340             disable mmx
4341         ;;
4342         # targets that do NOT support nopl and conditional mov (cmov)
4343         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4344             cpuflags="-march=$cpu"
4345             disable i686
4346         ;;
4347         # targets that do support nopl and conditional mov (cmov)
4348         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4349         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4350             cpuflags="-march=$cpu"
4351             enable i686
4352             enable fast_cmov
4353         ;;
4354         # targets that do support conditional mov but on which it's slow
4355         pentium4|pentium4m|prescott|nocona)
4356             cpuflags="-march=$cpu"
4357             enable i686
4358             disable fast_cmov
4359         ;;
4360     esac
4361
4362 fi
4363
4364 if [ "$cpu" != generic ]; then
4365     add_cflags  $cpuflags
4366     add_asflags $cpuflags
4367     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4368 fi
4369
4370 # compiler sanity check
4371 check_exec <<EOF
4372 int main(void){ return 0; }
4373 EOF
4374 if test "$?" != 0; then
4375     echo "$cc is unable to create an executable file."
4376     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4377         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4378         echo "Only do this if you know what cross compiling means."
4379     fi
4380     die "C compiler test failed."
4381 fi
4382
4383 add_cppflags -D_ISOC99_SOURCE
4384 add_cxxflags -D__STDC_CONSTANT_MACROS
4385 check_cflags -std=c99
4386 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4387 #include <stdlib.h>
4388 EOF
4389 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4390 #include <stdlib.h>
4391 EOF
4392
4393 add_host_cppflags -D_ISOC99_SOURCE
4394 check_host_cflags -std=c99
4395 check_host_cflags -Wall
4396 check_host_cflags -O3
4397
4398 check_64bit(){
4399     arch32=$1
4400     arch64=$2
4401     expr=$3
4402     check_code cc "" "int test[2*($expr) - 1]" &&
4403         subarch=$arch64 || subarch=$arch32
4404 }
4405
4406 case "$arch" in
4407     aarch64|alpha|ia64)
4408         spic=$shared
4409     ;;
4410     mips)
4411         check_64bit mips mips64 '_MIPS_SIM > 1'
4412         spic=$shared
4413     ;;
4414     parisc)
4415         check_64bit parisc parisc64 'sizeof(void *) > 4'
4416         spic=$shared
4417     ;;
4418     ppc)
4419         check_64bit ppc ppc64 'sizeof(void *) > 4'
4420         spic=$shared
4421     ;;
4422     s390)
4423         check_64bit s390 s390x 'sizeof(void *) > 4'
4424         spic=$shared
4425     ;;
4426     sparc)
4427         check_64bit sparc sparc64 'sizeof(void *) > 4'
4428         spic=$shared
4429     ;;
4430     x86)
4431         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4432         # Treat x32 as x64 for now. Note it also needs spic=$shared
4433         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4434             subarch=x86_64
4435         if test "$subarch" = "x86_64"; then
4436             spic=$shared
4437         fi
4438     ;;
4439     ppc)
4440         check_cc <<EOF && subarch="ppc64"
4441         int test[(int)sizeof(char*) - 7];
4442 EOF
4443     ;;
4444 esac
4445
4446 enable $subarch
4447 enabled spic && enable_weak pic
4448
4449 # OS specific
4450 case $target_os in
4451     aix)
4452         SHFLAGS=-shared
4453         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4454         enabled shared && add_ldflags -Wl,-brtl
4455         ;;
4456     android)
4457         disable symver
4458         enable section_data_rel_ro
4459         SLIB_INSTALL_NAME='$(SLIBNAME)'
4460         SLIB_INSTALL_LINKS=
4461         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4462         ;;
4463     haiku)
4464         prefix_default="/boot/common"
4465         network_extralibs="-lnetwork"
4466         host_libs=
4467         ;;
4468     sunos)
4469         SHFLAGS='-shared -Wl,-h,$$(@F)'
4470         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4471         network_extralibs="-lsocket -lnsl"
4472         add_cppflags -D__EXTENSIONS__
4473         # When using suncc to build, the Solaris linker will mark
4474         # an executable with each instruction set encountered by
4475         # the Solaris assembler.  As our libraries contain their own
4476         # guards for processor-specific code, instead suppress
4477         # generation of the HWCAPS ELF section on Solaris x86 only.
4478         enabled_all suncc x86 &&
4479             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4480             add_ldflags -Wl,-M,mapfile
4481         nm_default='nm -P -g'
4482         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4483         ;;
4484     netbsd)
4485         disable symver
4486         oss_indev_extralibs="-lossaudio"
4487         oss_outdev_extralibs="-lossaudio"
4488         enabled gcc || check_ldflags -Wl,-zmuldefs
4489         ;;
4490     openbsd|bitrig)
4491         disable symver
4492         SHFLAGS='-shared'
4493         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4494         SLIB_INSTALL_LINKS=
4495         oss_indev_extralibs="-lossaudio"
4496         oss_outdev_extralibs="-lossaudio"
4497         ;;
4498     dragonfly)
4499         disable symver
4500         ;;
4501     freebsd)
4502         ;;
4503     bsd/os)
4504         add_extralibs -lpoll -lgnugetopt
4505         strip="strip -d"
4506         ;;
4507     darwin)
4508         enabled ppc && add_asflags -force_cpusubtype_ALL
4509         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4510         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4511         strip="${strip} -x"
4512         add_ldflags -Wl,-dynamic,-search_paths_first
4513         SLIBSUF=".dylib"
4514         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4515         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4516         objformat="macho"
4517         enabled x86_64 && objformat="macho64"
4518         enabled_any pic shared x86_64 ||
4519             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4520         ;;
4521     msys*)
4522         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4523         ;;
4524     mingw32*|mingw64*)
4525         if test $target_os = "mingw32ce"; then
4526             disable network
4527         else
4528             target_os=mingw32
4529         fi
4530         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4531         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4532         LIBTARGET=i386
4533         if enabled x86_64; then
4534             LIBTARGET="i386:x86-64"
4535         elif enabled arm; then
4536             LIBTARGET=arm-wince
4537         fi
4538         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4539         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4540         shlibdir_default="$bindir_default"
4541         SLIBPREF=""
4542         SLIBSUF=".dll"
4543         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4544         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4545         dlltool="${cross_prefix}dlltool"
4546         if check_cmd lib.exe -list; then
4547             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4548             if enabled x86_64; then
4549                 LIBTARGET=x64
4550             fi
4551         elif check_cmd $dlltool --version; then
4552             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4553         fi
4554         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4555         SLIB_INSTALL_LINKS=
4556         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4557         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4558         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4559         objformat="win32"
4560         ranlib=:
4561         enable dos_paths
4562         check_ldflags -Wl,--nxcompat,--dynamicbase
4563         # Lets work around some stupidity in binutils.
4564         # ld will strip relocations from executables even though we need them
4565         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4566         # however ld then forgets what the entry point should be (oops) so we
4567         # have to manually (re)set it.
4568         if enabled x86_32; then
4569             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4570         elif enabled x86_64; then
4571             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4572             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4573             # Set image base >4GB for extra entropy with HEASLR
4574             add_ldexeflags -Wl,--image-base,0x140000000
4575             append SHFLAGS -Wl,--image-base,0x180000000
4576         fi
4577         ;;
4578     win32|win64)
4579         disable symver
4580         if enabled shared; then
4581             # Link to the import library instead of the normal static library
4582             # for shared libs.
4583             LD_LIB='%.lib'
4584             # Cannot build both shared and static libs with MSVC or icl.
4585             disable static
4586         fi
4587         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4588         shlibdir_default="$bindir_default"
4589         SLIBPREF=""
4590         SLIBSUF=".dll"
4591         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4592         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4593         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4594         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4595         SLIB_INSTALL_LINKS=
4596         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4597         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4598         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4599         objformat="win32"
4600         ranlib=:
4601         enable dos_paths
4602         ;;
4603     cygwin*)
4604         target_os=cygwin
4605         shlibdir_default="$bindir_default"
4606         SLIBPREF="cyg"
4607         SLIBSUF=".dll"
4608         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4609         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4610         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4611         SLIB_INSTALL_LINKS=
4612         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4613         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4614         objformat="win32"
4615         enable dos_paths
4616         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4617         ;;
4618     *-dos|freedos|opendos)
4619         network_extralibs="-lsocket"
4620         objformat="coff"
4621         enable dos_paths
4622         add_cppflags -U__STRICT_ANSI__
4623         ;;
4624     linux)
4625         enable dv1394
4626         enable section_data_rel_ro
4627         ;;
4628     irix*)
4629         target_os=irix
4630         ranlib="echo ignoring ranlib"
4631         ;;
4632     os/2*)
4633         strip="lxlite -CS"
4634         ln_s="cp -f"
4635         objformat="aout"
4636         add_cppflags -D_GNU_SOURCE
4637         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4638         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4639         LIBSUF="_s.a"
4640         SLIBPREF=""
4641         SLIBSUF=".dll"
4642         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4643         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4644         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4645             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4646             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4647             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4648             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4649         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4650             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4651         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4652         enable dos_paths
4653         enable_weak os2threads
4654         ;;
4655     gnu/kfreebsd)
4656         add_cppflags -D_BSD_SOURCE
4657         ;;
4658     gnu)
4659         ;;
4660     qnx)
4661         add_cppflags -D_QNX_SOURCE
4662         network_extralibs="-lsocket"
4663         ;;
4664     symbian)
4665         SLIBSUF=".dll"
4666         enable dos_paths
4667         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4668         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4669         add_ldflags -Wl,--target1-abs,--no-undefined \
4670                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4671                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4672         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4673                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4674                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4675         ;;
4676     osf1)
4677         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4678         ;;
4679     minix)
4680         ;;
4681     plan9)
4682         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4683                      -D_REENTRANT_SOURCE        \
4684                      -D_RESEARCH_SOURCE         \
4685                      -DFD_SETSIZE=96            \
4686                      -DHAVE_SOCK_OPTS
4687         add_compat strtod.o strtod=avpriv_strtod
4688         network_extralibs='-lbsd'
4689         exeobjs=compat/plan9/main.o
4690         disable ffserver
4691         cp_f='cp'
4692         ;;
4693     none)
4694         ;;
4695     *)
4696         die "Unknown OS '$target_os'."
4697         ;;
4698 esac
4699
4700 # determine libc flavour
4701
4702 probe_libc(){
4703     pfx=$1
4704     pfx_no_=${pfx%_}
4705     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4706     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4707         eval ${pfx}libc_type=uclibc
4708         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4709     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4710         eval ${pfx}libc_type=glibc
4711         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4712     # MinGW headers can be installed on Cygwin, so check for newlib first.
4713     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4714         eval ${pfx}libc_type=newlib
4715         add_${pfx}cppflags -U__STRICT_ANSI__
4716     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4717     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4718         eval ${pfx}libc_type=mingw64
4719         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4720             add_compat msvcrt/snprintf.o
4721             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4722         fi
4723         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4724         eval test \$${pfx_no_}cc_type = "gcc" &&
4725             add_${pfx}cppflags -D__printf__=__gnu_printf__
4726     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4727          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4728         eval ${pfx}libc_type=mingw32
4729         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4730             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4731             die "ERROR: MinGW32 runtime version must be >= 3.15."
4732         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4733         eval test \$${pfx_no_}cc_type = "gcc" &&
4734             add_${pfx}cppflags -D__printf__=__gnu_printf__
4735     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4736         eval ${pfx}libc_type=msvcrt
4737         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4738             if [ "$pfx" = host_ ]; then
4739                 add_host_cppflags -Dsnprintf=_snprintf
4740             else
4741                 add_compat strtod.o strtod=avpriv_strtod
4742                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4743                                              _snprintf=avpriv_snprintf  \
4744                                              vsnprintf=avpriv_vsnprintf
4745             fi
4746         fi
4747         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4748         # 0x601 by default unless something else is set by the user.
4749         # This can easily lead to us detecting functions only present
4750         # in such new versions and producing binaries requiring windows 7.0.
4751         # Therefore explicitly set the default to XP unless the user has
4752         # set something else on the command line.
4753         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4754         # family. For these cases, configure is free to use any functions
4755         # found in the SDK headers by default. (Alternatively, we could force
4756         # _WIN32_WINNT to 0x0602 in that case.)
4757         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4758             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4759 #ifdef WINAPI_FAMILY
4760 #include <winapifamily.h>
4761 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4762 #error not desktop
4763 #endif
4764 #endif
4765 EOF
4766     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4767         eval ${pfx}libc_type=klibc
4768     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4769         eval ${pfx}libc_type=bionic
4770     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4771         eval ${pfx}libc_type=solaris
4772         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4773     fi
4774     check_${pfx}cc <<EOF
4775 #include <time.h>
4776 void *v = localtime_r;
4777 EOF
4778 test "$?" != 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
4779 #include <time.h>
4780 void *v = localtime_r;
4781 EOF
4782
4783 }
4784
4785 probe_libc
4786 test -n "$libc_type" && enable libc_$libc_type
4787 probe_libc host_
4788 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4789
4790 case $libc_type in
4791     bionic)
4792         add_compat strtod.o strtod=avpriv_strtod
4793         ;;
4794 esac
4795
4796 # hacks for compiler/libc/os combinations
4797
4798 if enabled_all tms470 libc_glibc; then
4799     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4800     add_cppflags -D__USER_LABEL_PREFIX__=
4801     add_cppflags -D__builtin_memset=memset
4802     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4803     add_cflags   -pds=48    # incompatible redefinition of macro
4804 fi
4805
4806 if enabled_all ccc libc_glibc; then
4807     add_ldflags -Wl,-z,now  # calls to libots crash without this
4808 fi
4809
4810 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4811     add_cppflags '-I\$(SRC_PATH)/compat/float'
4812
4813 esc(){
4814     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4815 }
4816
4817 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4818
4819 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4820
4821 set_default libdir
4822 : ${shlibdir_default:="$libdir"}
4823 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4824
4825 set_default $PATHS_LIST
4826 set_default nm
4827
4828 # we need to build at least one lib type
4829 if ! enabled_any static shared; then
4830     cat <<EOF
4831 At least one library type must be built.
4832 Specify --enable-static to build the static libraries or --enable-shared to
4833 build the shared libraries as well. To only build the shared libraries specify
4834 --disable-static in addition to --enable-shared.
4835 EOF
4836     exit 1;
4837 fi
4838
4839 die_license_disabled() {
4840     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4841 }
4842
4843 die_license_disabled_gpl() {
4844     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4845 }
4846
4847 die_license_disabled gpl frei0r
4848 die_license_disabled gpl libcdio
4849 die_license_disabled gpl librubberband
4850 die_license_disabled gpl libsmbclient
4851 die_license_disabled gpl libutvideo
4852 die_license_disabled gpl libvidstab
4853 die_license_disabled gpl libx264
4854 die_license_disabled gpl libx265
4855 die_license_disabled gpl libxavs
4856 die_license_disabled gpl libxvid
4857 die_license_disabled gpl libzvbi
4858 die_license_disabled gpl x11grab
4859
4860 die_license_disabled nonfree libaacplus
4861 die_license_disabled nonfree libfaac
4862 die_license_disabled nonfree nvenc
4863 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4864 enabled gpl && die_license_disabled_gpl nonfree openssl
4865
4866 die_license_disabled version3 gmp
4867 die_license_disabled version3 libopencore_amrnb
4868 die_license_disabled version3 libopencore_amrwb
4869 die_license_disabled version3 libsmbclient
4870 die_license_disabled version3 libvo_aacenc
4871 die_license_disabled version3 libvo_amrwbenc
4872
4873 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4874
4875 disabled optimizations || check_cflags -fomit-frame-pointer
4876
4877 enable_weak_pic() {
4878     disabled pic && return
4879     enable pic
4880     add_cppflags -DPIC
4881     case "$target_os" in
4882     mingw*|cygwin*)
4883         ;;
4884     *)
4885         add_cflags -fPIC
4886         ;;
4887     esac
4888     add_asflags  -fPIC
4889 }
4890
4891 enabled pic && enable_weak_pic
4892
4893 check_cc <<EOF || die "Symbol mangling check failed."
4894 int ff_extern;
4895 EOF
4896 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4897 extern_prefix=${sym%%ff_extern*}
4898
4899 check_cc <<EOF && enable_weak inline_asm
4900 void foo(void) { __asm__ volatile ("" ::); }
4901 EOF
4902
4903 _restrict=
4904 for restrict_keyword in restrict __restrict__ __restrict; do
4905     check_cc <<EOF && _restrict=$restrict_keyword && break
4906 void foo(char * $restrict_keyword p);
4907 EOF
4908 done
4909
4910 check_cc <<EOF && enable pragma_deprecated
4911 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4912 EOF
4913
4914 check_cc <<EOF && enable attribute_packed
4915 struct { int x; } __attribute__((packed)) x;
4916 EOF
4917
4918 check_cc <<EOF && enable attribute_may_alias
4919 union { int x; } __attribute__((may_alias)) x;
4920 EOF
4921
4922 check_cc <<EOF || die "endian test failed"
4923 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4924 EOF
4925 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4926
4927 if ! enabled ppc64 || enabled bigendian; then
4928     disable vsx
4929 fi
4930
4931 check_gas() {
4932     log "check_gas using '$as' as AS"
4933     # :vararg is used on aarch64, arm and ppc altivec
4934     check_as <<EOF || return 1
4935 .macro m n, y:vararg=0
4936 \n: .int \y
4937 .endm
4938 m x
4939 EOF
4940     # .altmacro is only used in arm asm
4941     ! enabled arm || check_as <<EOF || return 1
4942 .altmacro
4943 EOF
4944     enable gnu_as
4945     return 0
4946 }
4947
4948 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4949     nogas=:
4950     enabled_any arm aarch64 && nogas=die
4951     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4952     as_noop=-v
4953
4954     case $as_type in
4955         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4956         gcc)  gaspp_as_type=gas ;;
4957         *)    gaspp_as_type=$as_type ;;
4958     esac
4959
4960     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4961
4962     test "${as#*gas-preprocessor.pl}" != "$as" ||
4963     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4964         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4965
4966     if ! check_gas ; then
4967         as=${gas:=$as}
4968         check_gas || \
4969             $nogas "GNU assembler not found, install/update gas-preprocessor"
4970     fi
4971
4972     check_as <<EOF && enable as_func
4973 .func test
4974 .endfunc
4975 EOF
4976 fi
4977
4978 check_inline_asm inline_asm_labels '"1:\n"'
4979
4980 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4981
4982 if enabled aarch64; then
4983     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4984     # internal assembler in clang 3.3 does not support this instruction
4985     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4986     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4987
4988     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4989
4990 elif enabled alpha; then
4991
4992     check_cflags -mieee
4993
4994 elif enabled arm; then
4995
4996     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4997
4998     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4999 float func(float a, float b){ return a+b; }
5000 EOF
5001
5002     enabled thumb && check_cflags -mthumb || check_cflags -marm
5003
5004     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5005         enable vfp_args
5006     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5007         enable vfp_args
5008     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5009         case "${cross_prefix:-$cc}" in
5010             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5011             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5012 __asm__ (".eabi_attribute 28, 1");
5013 int main(void) { return 0; }
5014 EOF
5015         esac
5016         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5017     fi
5018
5019     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5020     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5021     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5022     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5023     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5024     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5025     enabled setend  && check_insn setend  'setend be'
5026
5027     [ $target_os = linux ] || [ $target_os = android ] ||
5028         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5029             $ARCH_EXT_LIST_ARM
5030
5031     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5032
5033     check_as <<EOF && enable as_dn_directive
5034 ra .dn d0.i16
5035 .unreq ra
5036 EOF
5037
5038     # llvm's integrated assembler supports .object_arch from llvm 3.5
5039     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5040 .object_arch armv4
5041 EOF
5042
5043     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5044
5045 elif enabled mips; then
5046
5047     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5048     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5049     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5050
5051     # Enable minimum ISA based on selected options
5052     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5053         add_cflags "-mips64r2"
5054         add_asflags "-mips64r2"
5055     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5056         add_cflags "-mips64"
5057         add_asflags "-mips64"
5058     elif enabled mipsdsp || enabled mipsdspr2; then
5059         add_cflags "-mips32r2 -mfp32"
5060         add_asflags "-mips32r2 -mfp32"
5061     fi
5062
5063     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5064      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5065     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5066      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5067     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5068      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5069     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5070      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5071
5072     enabled msa && add_asflags "-mmsa"
5073
5074 elif enabled parisc; then
5075
5076     if enabled gcc; then
5077         case $($cc -dumpversion) in
5078             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5079         esac
5080     fi
5081
5082 elif enabled ppc; then
5083
5084     enable local_aligned_8 local_aligned_16 local_aligned_32
5085
5086     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5087     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5088     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5089     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5090
5091     # AltiVec flags: The FSF version of GCC differs from the Apple version
5092     if enabled altivec; then
5093         check_cflags -maltivec -mabi=altivec &&
5094         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5095         check_cflags -faltivec
5096
5097         # check if our compiler supports Motorola AltiVec C API
5098         check_cc <<EOF || disable altivec
5099 $inc_altivec_h
5100 int main(void) {
5101     vector signed int v1 = (vector signed int) { 0 };
5102     vector signed int v2 = (vector signed int) { 1 };
5103     v1 = vec_add(v1, v2);
5104     return 0;
5105 }
5106 EOF
5107
5108         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5109     fi
5110
5111     if enabled vsx; then
5112         check_cflags -mvsx &&
5113         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5114     fi
5115
5116     if enabled power8; then
5117         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5118     fi
5119
5120 elif enabled x86; then
5121
5122     check_builtin rdtsc    intrin.h   "__rdtsc()"
5123     check_builtin mm_empty mmintrin.h "_mm_empty()"
5124
5125     enable local_aligned_8 local_aligned_16 local_aligned_32
5126
5127     # check whether EBP is available on x86
5128     # As 'i' is stored on the stack, this program will crash
5129     # if the base pointer is used to access it because the
5130     # base pointer is cleared in the inline assembly code.
5131     check_exec_crash <<EOF && enable ebp_available
5132 volatile int i=0;
5133 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5134 return i;
5135 EOF
5136
5137     # check whether EBX is available on x86
5138     check_inline_asm ebx_available '""::"b"(0)' &&
5139         check_inline_asm ebx_available '"":::"%ebx"'
5140
5141     # check whether xmm clobbers are supported
5142     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5143
5144     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5145         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5146
5147     # check whether binutils is new enough to compile SSSE3/MMXEXT
5148     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5149     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5150
5151     if ! disabled_any asm mmx yasm; then
5152         if check_cmd $yasmexe --version; then
5153             enabled x86_64 && yasm_extra="-m amd64"
5154             yasm_debug="-g dwarf2"
5155         elif check_cmd nasm -v; then
5156             yasmexe=nasm
5157             yasm_debug="-g -F dwarf"
5158             if enabled x86_64; then
5159                 case "$objformat" in
5160                     elf)   objformat=elf64 ;;
5161                     win32) objformat=win64 ;;
5162                 esac
5163             fi
5164         fi
5165
5166         YASMFLAGS="-f $objformat $yasm_extra"
5167         enabled pic               && append YASMFLAGS "-DPIC"
5168         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5169         case "$objformat" in
5170             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5171         esac
5172
5173         check_yasm "movbe ecx, [5]" && enable yasm ||
5174             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5175         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5176         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5177         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5178         check_yasm "CPU amdnop" || disable cpunop
5179     fi
5180
5181     case "$cpu" in
5182         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5183             disable fast_clz
5184         ;;
5185     esac
5186
5187 fi
5188
5189 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5190
5191 check_ldflags -Wl,--as-needed
5192 check_ldflags -Wl,-z,noexecstack
5193
5194 if check_func dlopen; then
5195     ldl=
5196 elif check_func dlopen -ldl; then
5197     ldl=-ldl
5198 fi
5199
5200 frei0r_filter_extralibs='$ldl'
5201 frei0r_src_filter_extralibs='$ldl'
5202 ladspa_filter_extralibs='$ldl'
5203 nvenc_encoder_extralibs='$ldl'
5204
5205 if ! disabled network; then
5206     check_func getaddrinfo $network_extralibs
5207     check_func inet_aton $network_extralibs
5208
5209     check_type netdb.h "struct addrinfo"
5210     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5211     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5212     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5213     check_type poll.h "struct pollfd"
5214     check_type netinet/sctp.h "struct sctp_event_subscribe"
5215     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5216     check_type netinet/in.h "struct sockaddr_in6"
5217     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5218     check_type "sys/types.h sys/socket.h" socklen_t
5219
5220     # Prefer arpa/inet.h over winsock2
5221     if check_header arpa/inet.h ; then
5222         check_func closesocket
5223     elif check_header winsock2.h ; then
5224         check_func_headers winsock2.h closesocket -lws2 &&
5225             network_extralibs="-lws2" ||
5226         { check_func_headers winsock2.h closesocket -lws2_32 &&
5227             network_extralibs="-lws2_32"; } || disable winsock2_h network
5228         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5229
5230         check_type ws2tcpip.h socklen_t
5231         check_type ws2tcpip.h "struct addrinfo"
5232         check_type ws2tcpip.h "struct group_source_req"
5233         check_type ws2tcpip.h "struct ip_mreq_source"
5234         check_type ws2tcpip.h "struct ipv6_mreq"
5235         check_type winsock2.h "struct pollfd"
5236         check_struct winsock2.h "struct sockaddr" sa_len
5237         check_type ws2tcpip.h "struct sockaddr_in6"
5238         check_type ws2tcpip.h "struct sockaddr_storage"
5239     else
5240         disable network
5241     fi
5242 fi
5243
5244 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5245 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5246 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5247 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5248 check_builtin sarestart signal.h "SA_RESTART"
5249 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5250 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5251 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5252
5253 case "$custom_allocator" in
5254     jemalloc)
5255         # jemalloc by default does not use a prefix
5256         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5257     ;;
5258     tcmalloc)
5259         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5260         malloc_prefix=tc_
5261     ;;
5262 esac
5263
5264 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5265 check_func  ${malloc_prefix}memalign            && enable memalign
5266 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5267
5268 check_func  access
5269 check_func  arc4random
5270 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5271 check_func  fcntl
5272 check_func  fork
5273 check_func  gethrtime
5274 check_func  getopt
5275 check_func  getrusage
5276 check_func  gettimeofday
5277 check_func  isatty
5278 check_func  mach_absolute_time
5279 check_func  mkstemp
5280 check_func  mmap
5281 check_func  mprotect
5282 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5283 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5284 check_func  sched_getaffinity
5285 check_func  setrlimit
5286 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5287 check_func  strerror_r
5288 check_func  sysconf
5289 check_func  sysctl
5290 check_func  usleep
5291
5292 check_func_headers conio.h kbhit
5293 check_func_headers io.h setmode
5294 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5295 check_func_headers stdlib.h getenv
5296 check_func_headers sys/stat.h lstat
5297
5298 check_func_headers windows.h CoTaskMemFree -lole32
5299 check_func_headers windows.h GetProcessAffinityMask
5300 check_func_headers windows.h GetProcessTimes
5301 check_func_headers windows.h GetSystemTimeAsFileTime
5302 check_func_headers windows.h MapViewOfFile
5303 check_func_headers windows.h PeekNamedPipe
5304 check_func_headers windows.h SetConsoleTextAttribute
5305 check_func_headers windows.h SetConsoleCtrlHandler
5306 check_func_headers windows.h Sleep
5307 check_func_headers windows.h VirtualAlloc
5308 check_struct windows.h "CONDITION_VARIABLE" Ptr
5309 check_func_headers glob.h glob
5310 enabled xlib &&
5311     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5312
5313 check_header direct.h
5314 check_header dirent.h
5315 check_header dlfcn.h
5316 check_header d3d11.h
5317 check_header dxva.h
5318 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5319 check_header io.h
5320 check_header libcrystalhd/libcrystalhd_if.h
5321 check_header mach/mach_time.h
5322 check_header malloc.h
5323 check_header net/udplite.h
5324 check_header poll.h
5325 check_header sys/mman.h
5326 check_header sys/param.h
5327 check_header sys/resource.h
5328 check_header sys/select.h
5329 check_header sys/time.h
5330 check_header sys/un.h
5331 check_header termios.h
5332 check_header unistd.h
5333 check_header valgrind/valgrind.h
5334 check_header vdpau/vdpau.h
5335 check_header vdpau/vdpau_x11.h
5336 check_header VideoDecodeAcceleration/VDADecoder.h
5337 check_header VideoToolbox/VideoToolbox.h
5338 check_header windows.h
5339 check_header X11/extensions/XvMClib.h
5340 check_header asm/types.h
5341
5342 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5343 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5344 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5345 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5346
5347 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5348
5349 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5350 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5351 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5352 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5353 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5354
5355 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5356 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5357
5358 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5359
5360 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5361
5362 if ! disabled w32threads && ! enabled pthreads; then
5363     check_func_headers "windows.h process.h" _beginthreadex &&
5364         enable w32threads || disable w32threads
5365     if ! enabled w32threads && enabled winrt; then
5366         check_func_headers "windows.h" CreateThread &&
5367             enable w32threads || disable w32threads
5368     fi
5369 fi
5370
5371 # check for some common methods of building with pthread support
5372 # do this before the optional library checks as some of them require pthreads
5373 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5374     enable pthreads
5375     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5376         add_cflags -pthread
5377         add_extralibs -pthread
5378     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5379         add_cflags -pthreads
5380         add_extralibs -pthreads
5381     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5382         add_cflags -ldl -pthread
5383         add_extralibs -ldl -pthread
5384     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5385         add_extralibs -lpthreadGC2
5386     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5387         :
5388     elif ! check_func pthread_join && ! check_func pthread_create; then
5389         disable pthreads
5390     fi
5391     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5392 fi
5393
5394
5395 if enabled pthreads; then
5396   check_func pthread_cancel
5397 fi
5398
5399 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5400 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5401 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5402
5403 check_lib math.h sin -lm && LIBM="-lm"
5404 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5405
5406 atan2f_args=2
5407 copysign_args=2
5408 hypot_args=2
5409 ldexpf_args=2
5410 powf_args=2
5411
5412 for func in $MATH_FUNCS; do
5413     eval check_mathfunc $func \${${func}_args:-1}
5414 done
5415
5416 for func in $COMPLEX_FUNCS; do
5417     eval check_complexfunc $func \${${func}_args:-1}
5418 done
5419
5420 # these are off by default, so fail if requested and not available
5421 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5422 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5423                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5424 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5425                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5426                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5427 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5428 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5429 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5430 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5431 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5432 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5433 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5434 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5435 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5436 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5437 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5438 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5439                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5440                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5441 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5442 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5443 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5444 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5445                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5446                                  warn "using libfdk without pkg-config"; } }
5447 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"
5448 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5449 enabled fontconfig        && enable libfontconfig
5450 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5451 enabled libfreetype       && require_libfreetype
5452 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5453 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5454 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5455                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5456                                done || die "ERROR: libgsm not found"; }
5457 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5458 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5459 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5460 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5461 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5462 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5463 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5464 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5465 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5466 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5467 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5468                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5469                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5470                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5471                                die "ERROR: libopenjpeg not found"; }
5472 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5473 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5474 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5475 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5476 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5477 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5478 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5479 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5480                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5481 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5482 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5483 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5484 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5485 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5486 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5487 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5488                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5489                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5490 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5491 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5492 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5493 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5494 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5495 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5496
5497 enabled libvpx            && {
5498     enabled libvpx_vp8_decoder && {
5499         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5500             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5501                 die "ERROR: libvpx decoder version must be >=0.9.1";
5502     }
5503     enabled libvpx_vp8_encoder && {
5504         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5505             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5506                 die "ERROR: libvpx encoder version must be >=0.9.7";
5507     }
5508     enabled libvpx_vp9_decoder && {
5509         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5510             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5511                 disable libvpx_vp9_decoder;
5512     }
5513     enabled libvpx_vp9_encoder && {
5514         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5515             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5516                 disable libvpx_vp9_encoder;
5517     }
5518     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5519         die "libvpx enabled but no supported decoders found"
5520     fi
5521 }
5522
5523 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5524 enabled libwebp           && {
5525     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5526     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5527 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5528                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5529                                  warn "using libx264 without pkg-config"; } } &&
5530                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5531                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5532                              { check_cpp_condition x264.h "X264_MPEG2" &&
5533                                enable libx262; }
5534 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5535                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5536                                die "ERROR: libx265 version must be >= 57."; }
5537 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5538 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5539 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5540 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5541 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5542 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5543                                 { ! enabled cross_compile && {
5544                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5545                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5546                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5547                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5548                                die "ERROR: mmal not found"; }
5549 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5550 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5551                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5552                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5553                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5554 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5555                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5556                                die "ERROR: openal not found"; } &&
5557                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5558                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5559 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5560                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5561                                die "ERROR: opencl not found"; } &&
5562                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5563                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5564                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5565 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5566                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5567                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5568                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5569                                die "ERROR: opengl not found."
5570                              }
5571 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5572                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5573                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5574                                die "ERROR: openssl not found"; }
5575 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5576
5577 # libdc1394 check
5578 if enabled libdc1394; then
5579     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5580         enable libdc1394_2; } ||
5581     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5582         enable libdc1394_1; } ||
5583     die "ERROR: No version of libdc1394 found "
5584 fi
5585
5586 if enabled gcrypt; then
5587     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5588     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5589         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5590         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5591         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5592             die "ERROR: gcrypt not found"
5593         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5594     else
5595         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5596     fi
5597 fi
5598
5599 if ! disabled sdl; then
5600     SDL_CONFIG="${cross_prefix}sdl-config"
5601     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5602         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5603         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5604         enable sdl
5605     else
5606         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5607             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5608             sdl_libs=$("${SDL_CONFIG}" --libs)
5609             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5610             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5611             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5612             enable sdl
5613         elif enabled sdl ; then
5614             die "ERROR: SDL not found"
5615         else
5616             disable sdl
5617         fi
5618     fi
5619     if test $target_os = "mingw32"; then
5620         sdl_libs="$sdl_libs -mconsole"
5621     fi
5622 fi
5623 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5624
5625 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5626     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5627     enable securetransport; }
5628
5629 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5630                        enable schannel && add_extralibs -lSecur32; }
5631
5632 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5633 enabled makeinfo \
5634     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5635     && enable makeinfo_html || disable makeinfo_html
5636 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5637 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5638 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5639 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5640
5641 check_header linux/fb.h
5642 check_header linux/videodev.h
5643 check_header linux/videodev2.h
5644 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5645
5646 check_header sys/videoio.h
5647 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5648
5649 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5650 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5651 # w32api 3.12 had it defined wrong
5652 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5653
5654 check_type "dshow.h" IBaseFilter
5655
5656 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5657 { check_header dev/bktr/ioctl_meteor.h &&
5658   check_header dev/bktr/ioctl_bt848.h; } ||
5659 { check_header machine/ioctl_meteor.h &&
5660   check_header machine/ioctl_bt848.h; } ||
5661 { check_header dev/video/meteor/ioctl_meteor.h &&
5662   check_header dev/video/bktr/ioctl_bt848.h; } ||
5663 check_header dev/ic/bt8xx.h
5664
5665 check_header sndio.h
5666 if check_struct sys/soundcard.h audio_buf_info bytes; then
5667     enable_safe sys/soundcard.h
5668 else
5669     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5670     #include <sys/soundcard.h>
5671     audio_buf_info abc;
5672 EOF
5673 fi
5674 check_header soundcard.h
5675
5676 enabled_any alsa_indev alsa_outdev &&
5677     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5678
5679 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5680     check_func jack_port_get_latency_range -ljack
5681
5682 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5683
5684 if enabled libcdio; then
5685     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5686     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5687     die "ERROR: No usable libcdio/cdparanoia found"
5688 fi
5689
5690 enabled xlib &&
5691     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5692
5693 if ! disabled libxcb; then
5694     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5695         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5696     } && disable x11grab && enable libxcb
5697
5698 if enabled libxcb; then
5699     disabled libxcb_shm || {
5700         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5701             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5702         } && check_header sys/shm.h && enable libxcb_shm; }
5703
5704     disabled libxcb_xfixes || {
5705         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5706             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5707         } && enable libxcb_xfixes; }
5708
5709     disabled libxcb_shape || {
5710         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5711             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5712         } && enable libxcb_shape; }
5713
5714     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5715     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5716 fi
5717 fi
5718
5719 if enabled x11grab; then
5720     enabled xlib || die "ERROR: Xlib not found"
5721     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5722     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5723 fi
5724
5725 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5726
5727 enabled dxva2api_h &&
5728     check_cc <<EOF && enable dxva2api_cobj
5729 #define _WIN32_WINNT 0x0600
5730 #define COBJMACROS
5731 #include <windows.h>
5732 #include <d3d9.h>
5733 #include <dxva2api.h>
5734 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5735 EOF
5736
5737 enabled vaapi &&
5738     check_lib va/va.h vaInitialize -lva ||
5739     disable vaapi
5740
5741 enabled vaapi && enabled xlib &&
5742     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5743     enable vaapi_x11
5744
5745 enabled vdpau &&
5746     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5747     disable vdpau
5748
5749 enabled vdpau && enabled xlib &&
5750     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5751     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5752     enable vdpau_x11
5753
5754 # Funny iconv installations are not unusual, so check it after all flags have been set
5755 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5756
5757 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5758
5759 # add some useful compiler flags if supported
5760 check_cflags -Wdeclaration-after-statement
5761 check_cflags -Wall
5762 check_cflags -Wdisabled-optimization
5763 check_cflags -Wpointer-arith
5764 check_cflags -Wredundant-decls
5765 check_cflags -Wwrite-strings
5766 check_cflags -Wtype-limits
5767 check_cflags -Wundef
5768 check_cflags -Wmissing-prototypes
5769 check_cflags -Wno-pointer-to-int-cast
5770 check_cflags -Wstrict-prototypes
5771 check_cflags -Wempty-body
5772 enabled extra_warnings && check_cflags -Winline
5773 enabled extra_warnings && check_cflags -Wcast-qual
5774
5775 check_disable_warning(){
5776     warning_flag=-W${1#-Wno-}
5777     test_cflags $warning_flag && add_cflags $1
5778 }
5779
5780 check_disable_warning -Wno-parentheses
5781 check_disable_warning -Wno-switch
5782 check_disable_warning -Wno-format-zero-length
5783 check_disable_warning -Wno-pointer-sign
5784 check_disable_warning -Wno-unused-const-variable
5785
5786 # add some linker flags
5787 check_ldflags -Wl,--warn-common
5788 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5789 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5790 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5791 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5792
5793 # add some strip flags
5794 # -wN '..@*' is more selective than -x, but not available everywhere.
5795 check_stripflags -wN \'..@*\' || check_stripflags -x
5796
5797 enabled neon_clobber_test &&
5798     check_ldflags -Wl,--wrap,avcodec_open2              \
5799                   -Wl,--wrap,avcodec_decode_audio4      \
5800                   -Wl,--wrap,avcodec_decode_video2      \
5801                   -Wl,--wrap,avcodec_decode_subtitle2   \
5802                   -Wl,--wrap,avcodec_encode_audio2      \
5803                   -Wl,--wrap,avcodec_encode_video2      \
5804                   -Wl,--wrap,avcodec_encode_subtitle    \
5805                   -Wl,--wrap,swr_convert                \
5806                   -Wl,--wrap,avresample_convert ||
5807     disable neon_clobber_test
5808
5809 enabled xmm_clobber_test &&
5810     check_ldflags -Wl,--wrap,avcodec_open2              \
5811                   -Wl,--wrap,avcodec_decode_audio4      \
5812                   -Wl,--wrap,avcodec_decode_video2      \
5813                   -Wl,--wrap,avcodec_decode_subtitle2   \
5814                   -Wl,--wrap,avcodec_encode_audio2      \
5815                   -Wl,--wrap,avcodec_encode_video2      \
5816                   -Wl,--wrap,avcodec_encode_subtitle    \
5817                   -Wl,--wrap,swr_convert                \
5818                   -Wl,--wrap,avresample_convert         \
5819                   -Wl,--wrap,sws_scale ||
5820     disable xmm_clobber_test
5821
5822 echo "X { local: *; };" > $TMPV
5823 if test_ldflags -Wl,--version-script,$TMPV; then
5824     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5825 elif test_ldflags -Wl,-M,$TMPV; then
5826     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5827 fi
5828
5829 check_cc <<EOF && enable symver_asm_label
5830 void ff_foo(void) __asm__ ("av_foo@VERSION");
5831 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5832 EOF
5833     check_cc <<EOF && enable symver_gnu_asm
5834 __asm__(".symver ff_foo,av_foo@VERSION");
5835 void ff_foo(void) {}
5836 EOF
5837
5838 if [ -z "$optflags" ]; then
5839     if enabled small; then
5840         optflags=$cflags_size
5841     elif enabled optimizations; then
5842         optflags=$cflags_speed
5843     else
5844         optflags=$cflags_noopt
5845     fi
5846 fi
5847
5848 check_optflags(){
5849     check_cflags "$@"
5850     enabled lto && check_ldflags "$@"
5851 }
5852
5853
5854 if enabled lto; then
5855     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5856     check_cflags  -flto
5857     check_ldflags -flto $cpuflags
5858     disable inline_asm_direct_symbol_refs
5859 fi
5860
5861 check_optflags $optflags
5862 check_optflags -fno-math-errno
5863 check_optflags -fno-signed-zeros
5864
5865 enabled ftrapv && check_cflags -ftrapv
5866
5867 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5868 int x;
5869 EOF
5870
5871
5872 if enabled icc; then
5873     # Just warnings, no remarks
5874     check_cflags -w1
5875     # -wd: Disable following warnings
5876     # 144, 167, 556: -Wno-pointer-sign
5877     # 188: enumerated type mixed with another type
5878     # 1292: attribute "foo" ignored
5879     # 1419: external declaration in primary source file
5880     # 10006: ignoring unknown option -fno-signed-zeros
5881     # 10148: ignoring unknown option -Wno-parentheses
5882     # 10156: ignoring option '-W'; no argument required
5883     # 13200: No EMMS instruction before call to function
5884     # 13203: No EMMS instruction before return from function
5885     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5886     # 11030: Warning unknown option --as-needed
5887     # 10156: ignoring option '-export'; no argument required
5888     check_ldflags -wd10156,11030
5889     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5890     enable ebp_available
5891     # The test above does not test linking
5892     enabled lto && disable symver_asm_label
5893     if enabled x86_32; then
5894         icc_version=$($cc -dumpversion)
5895         test ${icc_version%%.*} -ge 11 &&
5896             check_cflags -falign-stack=maintain-16-byte ||
5897             disable aligned_stack
5898     fi
5899 elif enabled ccc; then
5900     # disable some annoying warnings
5901     add_cflags -msg_disable bitnotint
5902     add_cflags -msg_disable mixfuncvoid
5903     add_cflags -msg_disable nonstandcast
5904     add_cflags -msg_disable unsupieee
5905 elif enabled gcc; then
5906     check_optflags -fno-tree-vectorize
5907     check_cflags -Werror=format-security
5908     check_cflags -Werror=implicit-function-declaration
5909     check_cflags -Werror=missing-prototypes
5910     check_cflags -Werror=return-type
5911     check_cflags -Werror=vla
5912     check_cflags -Wformat
5913     check_cflags -fdiagnostics-color=auto
5914     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5915 elif enabled llvm_gcc; then
5916     check_cflags -mllvm -stack-alignment=16
5917 elif enabled clang; then
5918     check_cflags -mllvm -stack-alignment=16
5919     check_cflags -Qunused-arguments
5920     check_cflags -Werror=implicit-function-declaration
5921     check_cflags -Werror=missing-prototypes
5922     check_cflags -Werror=return-type
5923 elif enabled cparser; then
5924     add_cflags -Wno-missing-variable-declarations
5925     add_cflags -Wno-empty-statement
5926 elif enabled armcc; then
5927     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5928     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5929     # 2523: use of inline assembly is deprecated
5930     add_cflags -W${armcc_opt},--diag_suppress=2523
5931     add_cflags -W${armcc_opt},--diag_suppress=1207
5932     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5933     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5934     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5935     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5936 elif enabled tms470; then
5937     add_cflags -pds=824 -pds=837
5938     disable inline_asm
5939 elif enabled pathscale; then
5940     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5941 elif enabled_any msvc icl; then
5942     enabled x86_32 && disable aligned_stack
5943     enabled_all x86_32 debug && add_cflags -Oy-
5944     enabled debug && add_ldflags -debug
5945     enable pragma_deprecated
5946     if enabled icl; then
5947         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5948         # (correctly) on icl 13.x.
5949         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5950             add_cflags -Qansi-alias
5951         # Some inline asm is not compilable in debug
5952         if enabled debug; then
5953             disable ebp_available
5954             disable ebx_available
5955         fi
5956     fi
5957     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5958     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5959     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5960     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5961     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5962     # MSVC 2013 and newer can handle it fine.
5963     # If this declspec fails, force including stdlib.h before the restrict redefinition
5964     # happens in config.h.
5965     if [ $_restrict != restrict ]; then
5966         check_cc <<EOF || add_cflags -FIstdlib.h
5967 __declspec($_restrict) void* foo(int);
5968 EOF
5969     fi
5970     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5971 fi
5972
5973 for pfx in "" host_; do
5974     varname=${pfx%_}cc_type
5975     eval "type=\$$varname"
5976     if [ $type = "msvc" ]; then
5977         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5978 static inline int foo(int a) { return a; }
5979 EOF
5980     fi
5981 done
5982
5983 case $as_type in
5984     clang)
5985         add_asflags -Qunused-arguments
5986     ;;
5987 esac
5988
5989 case $ld_type in
5990     clang)
5991         check_ldflags -Qunused-arguments
5992     ;;
5993 esac
5994
5995 case $target_os in
5996     osf1)
5997         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5998     ;;
5999     plan9)
6000         add_cppflags -Dmain=plan9_main
6001     ;;
6002 esac
6003
6004 enable frame_thread_encoder
6005
6006 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6007
6008 check_deps $CONFIG_LIST       \
6009            $CONFIG_EXTRA      \
6010            $HAVE_LIST         \
6011            $ALL_COMPONENTS    \
6012
6013 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"
6014
6015
6016 if test $target_os = "haiku"; then
6017     disable memalign
6018     disable posix_memalign
6019 fi
6020
6021 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6022     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6023     enable dxva2_lib
6024
6025 ! enabled_any memalign posix_memalign aligned_malloc &&
6026     enabled simd_align_16 && enable memalign_hack
6027
6028 # add_dep lib dep
6029 # -> enable ${lib}_deps_${dep}
6030 # -> add $dep to ${lib}_deps only once
6031 add_dep() {
6032     lib=$1
6033     dep=$2
6034     enabled "${lib}_deps_${dep}" && return 0
6035     enable  "${lib}_deps_${dep}"
6036     prepend "${lib}_deps" $dep
6037 }
6038
6039 # merge deps lib components
6040 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6041 merge_deps() {
6042     lib=$1
6043     shift
6044     for comp in $*; do
6045         enabled $comp || continue
6046         eval "dep=\"\$${comp}_deps\""
6047         for d in $dep; do
6048             add_dep $lib $d
6049         done
6050     done
6051 }
6052
6053 merge_deps libavfilter $FILTER_LIST
6054
6055 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6056
6057 for thread in $THREADS_LIST; do
6058     if enabled $thread; then
6059         test -n "$thread_type" &&
6060             die "ERROR: Only one thread type must be selected." ||
6061             thread_type="$thread"
6062     fi
6063 done
6064
6065 enabled zlib && add_cppflags -DZLIB_CONST
6066
6067 # conditional library dependencies, in linking order
6068 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6069 enabled aresample_filter    && prepend avfilter_deps "swresample"
6070 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6071 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6072 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6073 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6074 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6075 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6076 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6077 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6078 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6079 enabled pan_filter          && prepend avfilter_deps "swresample"
6080 enabled pp_filter           && prepend avfilter_deps "postproc"
6081 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6082 enabled resample_filter && prepend avfilter_deps "avresample"
6083 enabled sab_filter          && prepend avfilter_deps "swscale"
6084 enabled scale_filter    && prepend avfilter_deps "swscale"
6085 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6086 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6087 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6088 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6089 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6090 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6091 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6092 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6093 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6094
6095 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6096
6097 enabled opus_decoder    && prepend avcodec_deps "swresample"
6098
6099 expand_deps(){
6100     lib_deps=${1}_deps
6101     eval "deps=\$$lib_deps"
6102     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6103     unique $lib_deps
6104 }
6105
6106 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6107 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6108
6109 map 'expand_deps $v' $LIBRARY_LIST
6110
6111 echo "install prefix            $prefix"
6112 echo "source path               $source_path"
6113 echo "C compiler                $cc"
6114 echo "C library                 $libc_type"
6115 if test "$host_cc" != "$cc"; then
6116     echo "host C compiler           $host_cc"
6117     echo "host C library            $host_libc_type"
6118 fi
6119 echo "ARCH                      $arch ($cpu)"
6120 if test "$build_suffix" != ""; then
6121     echo "build suffix              $build_suffix"
6122 fi
6123 if test "$progs_suffix" != ""; then
6124     echo "progs suffix              $progs_suffix"
6125 fi
6126 if test "$extra_version" != ""; then
6127     echo "version string suffix     $extra_version"
6128 fi
6129 echo "big-endian                ${bigendian-no}"
6130 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6131 if enabled x86; then
6132     echo "${yasmexe}                      ${yasm-no}"
6133     echo "MMX enabled               ${mmx-no}"
6134     echo "MMXEXT enabled            ${mmxext-no}"
6135     echo "3DNow! enabled            ${amd3dnow-no}"
6136     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6137     echo "SSE enabled               ${sse-no}"
6138     echo "SSSE3 enabled             ${ssse3-no}"
6139     echo "AESNI enabled             ${aesni-no}"
6140     echo "AVX enabled               ${avx-no}"
6141     echo "XOP enabled               ${xop-no}"
6142     echo "FMA3 enabled              ${fma3-no}"
6143     echo "FMA4 enabled              ${fma4-no}"
6144     echo "i686 features enabled     ${i686-no}"
6145     echo "CMOV is fast              ${fast_cmov-no}"
6146     echo "EBX available             ${ebx_available-no}"
6147     echo "EBP available             ${ebp_available-no}"
6148 fi
6149 if enabled aarch64; then
6150     echo "NEON enabled              ${neon-no}"
6151     echo "VFP enabled               ${vfp-no}"
6152 fi
6153 if enabled arm; then
6154     echo "ARMv5TE enabled           ${armv5te-no}"
6155     echo "ARMv6 enabled             ${armv6-no}"
6156     echo "ARMv6T2 enabled           ${armv6t2-no}"
6157     echo "VFP enabled               ${vfp-no}"
6158     echo "NEON enabled              ${neon-no}"
6159     echo "THUMB enabled             ${thumb-no}"
6160 fi
6161 if enabled mips; then
6162     echo "MIPS FPU enabled          ${mipsfpu-no}"
6163     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6164     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6165     echo "MIPS MSA enabled          ${msa-no}"
6166     echo "LOONGSON MMI enabled      ${mmi-no}"
6167 fi
6168 if enabled ppc; then
6169     echo "AltiVec enabled           ${altivec-no}"
6170     echo "VSX enabled               ${vsx-no}"
6171     echo "POWER8 enabled            ${power8-no}"
6172     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6173     echo "dcbzl available           ${dcbzl-no}"
6174 fi
6175 echo "debug symbols             ${debug-no}"
6176 echo "strip symbols             ${stripping-no}"
6177 echo "optimize for size         ${small-no}"
6178 echo "optimizations             ${optimizations-no}"
6179 echo "static                    ${static-no}"
6180 echo "shared                    ${shared-no}"
6181 echo "postprocessing support    ${postproc-no}"
6182 echo "new filter support        ${avfilter-no}"
6183 echo "network support           ${network-no}"
6184 echo "threading support         ${thread_type-no}"
6185 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6186 echo "SDL support               ${sdl-no}"
6187 echo "opencl enabled            ${opencl-no}"
6188 echo "texi2html enabled         ${texi2html-no}"
6189 echo "perl enabled              ${perl-no}"
6190 echo "pod2man enabled           ${pod2man-no}"
6191 echo "makeinfo enabled          ${makeinfo-no}"
6192 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6193 test -n "$random_seed" &&
6194     echo "random seed               ${random_seed}"
6195 echo
6196
6197 echo "Enabled programs:"
6198 print_enabled '' $PROGRAM_LIST | print_in_columns
6199 echo
6200
6201 echo "External libraries:"
6202 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6203 echo
6204
6205 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6206     echo "Enabled ${type}s:"
6207     eval list=\$$(toupper $type)_LIST
6208     print_enabled '_*' $list | print_in_columns
6209     echo
6210 done
6211
6212 license="LGPL version 2.1 or later"
6213 if enabled nonfree; then
6214     license="nonfree and unredistributable"
6215 elif enabled gplv3; then
6216     license="GPL version 3 or later"
6217 elif enabled lgplv3; then
6218     license="LGPL version 3 or later"
6219 elif enabled gpl; then
6220     license="GPL version 2 or later"
6221 fi
6222
6223 echo "License: $license"
6224
6225 echo "Creating config.mak, config.h, and doc/config.texi..."
6226
6227 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6228
6229 enabled stripping || strip="echo skipping strip"
6230
6231 config_files="$TMPH config.mak doc/config.texi"
6232
6233 cat > config.mak <<EOF
6234 # Automatically generated by configure - do not modify!
6235 ifndef FFMPEG_CONFIG_MAK
6236 FFMPEG_CONFIG_MAK=1
6237 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6238 prefix=$prefix
6239 LIBDIR=\$(DESTDIR)$libdir
6240 SHLIBDIR=\$(DESTDIR)$shlibdir
6241 INCDIR=\$(DESTDIR)$incdir
6242 BINDIR=\$(DESTDIR)$bindir
6243 DATADIR=\$(DESTDIR)$datadir
6244 DOCDIR=\$(DESTDIR)$docdir
6245 MANDIR=\$(DESTDIR)$mandir
6246 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6247 SRC_PATH=$source_path
6248 ifndef MAIN_MAKEFILE
6249 SRC_PATH:=\$(SRC_PATH:.%=..%)
6250 endif
6251 CC_IDENT=$cc_ident
6252 ARCH=$arch
6253 INTRINSICS=$intrinsics
6254 CC=$cc
6255 CXX=$cxx
6256 AS=$as
6257 OBJCC=$objcc
6258 LD=$ld
6259 DEPCC=$dep_cc
6260 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6261 DEPAS=$as
6262 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6263 YASM=$yasmexe
6264 DEPYASM=$yasmexe
6265 AR=$ar
6266 ARFLAGS=$arflags
6267 AR_O=$ar_o
6268 RANLIB=$ranlib
6269 STRIP=$strip
6270 CP=cp -p
6271 LN_S=$ln_s
6272 CPPFLAGS=$CPPFLAGS
6273 CFLAGS=$CFLAGS
6274 CXXFLAGS=$CXXFLAGS
6275 OBJCFLAGS=$OBJCFLAGS
6276 ASFLAGS=$ASFLAGS
6277 AS_C=$AS_C
6278 AS_O=$AS_O
6279 OBJCC_C=$OBJCC_C
6280 OBJCC_E=$OBJCC_E
6281 OBJCC_O=$OBJCC_O
6282 CC_C=$CC_C
6283 CC_E=$CC_E
6284 CC_O=$CC_O
6285 CXX_C=$CXX_C
6286 CXX_O=$CXX_O
6287 LD_O=$LD_O
6288 LD_LIB=$LD_LIB
6289 LD_PATH=$LD_PATH
6290 DLLTOOL=$dlltool
6291 WINDRES=$windres
6292 DEPWINDRES=$dep_cc
6293 DOXYGEN=$doxygen
6294 LDFLAGS=$LDFLAGS
6295 LDEXEFLAGS=$LDEXEFLAGS
6296 LDLIBFLAGS=$LDLIBFLAGS
6297 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6298 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6299 YASMFLAGS=$YASMFLAGS
6300 BUILDSUF=$build_suffix
6301 PROGSSUF=$progs_suffix
6302 FULLNAME=$FULLNAME
6303 LIBPREF=$LIBPREF
6304 LIBSUF=$LIBSUF
6305 LIBNAME=$LIBNAME
6306 SLIBPREF=$SLIBPREF
6307 SLIBSUF=$SLIBSUF
6308 EXESUF=$EXESUF
6309 EXTRA_VERSION=$extra_version
6310 CCDEP=$CCDEP
6311 CXXDEP=$CXXDEP
6312 CCDEP_FLAGS=$CCDEP_FLAGS
6313 ASDEP=$ASDEP
6314 ASDEP_FLAGS=$ASDEP_FLAGS
6315 CC_DEPFLAGS=$CC_DEPFLAGS
6316 AS_DEPFLAGS=$AS_DEPFLAGS
6317 HOSTCC=$host_cc
6318 HOSTLD=$host_ld
6319 HOSTCFLAGS=$host_cflags
6320 HOSTCPPFLAGS=$host_cppflags
6321 HOSTEXESUF=$HOSTEXESUF
6322 HOSTLDFLAGS=$host_ldflags
6323 HOSTLIBS=$host_libs
6324 DEPHOSTCC=$host_cc
6325 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6326 HOSTCCDEP=$HOSTCCDEP
6327 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6328 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6329 HOSTCC_C=$HOSTCC_C
6330 HOSTCC_O=$HOSTCC_O
6331 HOSTLD_O=$HOSTLD_O
6332 TARGET_EXEC=$target_exec $target_exec_args
6333 TARGET_PATH=$target_path
6334 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6335 CFLAGS-ffplay=$sdl_cflags
6336 ZLIB=$($ldflags_filter -lz)
6337 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6338 EXTRALIBS=$extralibs
6339 COMPAT_OBJS=$compat_objs
6340 EXEOBJS=$exeobjs
6341 INSTALL=$install
6342 LIBTARGET=${LIBTARGET}
6343 SLIBNAME=${SLIBNAME}
6344 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6345 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6346 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6347 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6348 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6349 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6350 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6351 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6352 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6353 NOREDZONE_FLAGS=$noredzone_flags
6354 EOF
6355
6356 get_version(){
6357     lcname=lib${1}
6358     name=$(toupper $lcname)
6359     file=$source_path/$lcname/version.h
6360     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6361     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6362     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6363     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6364     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6365     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6366 }
6367
6368 map 'get_version $v' $LIBRARY_LIST
6369
6370 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6371
6372 print_program_libs(){
6373     eval "program_libs=\$${1}_libs"
6374     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6375 }
6376
6377 map 'print_program_libs $v' $PROGRAM_LIST
6378
6379 cat > $TMPH <<EOF
6380 /* Automatically generated by configure - do not modify! */
6381 #ifndef FFMPEG_CONFIG_H
6382 #define FFMPEG_CONFIG_H
6383 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6384 #define FFMPEG_LICENSE "$(c_escape $license)"
6385 #define CONFIG_THIS_YEAR 2016
6386 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6387 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6388 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6389 #define av_restrict $_restrict
6390 #define EXTERN_PREFIX "${extern_prefix}"
6391 #define EXTERN_ASM ${extern_prefix}
6392 #define BUILDSUF "$build_suffix"
6393 #define SLIBSUF "$SLIBSUF"
6394 #define HAVE_MMX2 HAVE_MMXEXT
6395 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6396 EOF
6397
6398 test -n "$assert_level" &&
6399     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6400
6401 test -n "$malloc_prefix" &&
6402     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6403
6404 if enabled yasm; then
6405     append config_files $TMPASM
6406     printf '' >$TMPASM
6407 fi
6408
6409 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6410
6411
6412 mkdir -p doc
6413 mkdir -p tests
6414 mkdir -p tests/api
6415 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6416
6417 print_config ARCH_   "$config_files" $ARCH_LIST
6418 print_config HAVE_   "$config_files" $HAVE_LIST
6419 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6420                                      $CONFIG_EXTRA      \
6421                                      $ALL_COMPONENTS    \
6422
6423 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6424 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6425
6426 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6427 cp_if_changed $TMPH config.h
6428 touch .config
6429
6430 enabled yasm && cp_if_changed $TMPASM config.asm
6431
6432 cat > $TMPH <<EOF
6433 /* Generated by ffconf */
6434 #ifndef AVUTIL_AVCONFIG_H
6435 #define AVUTIL_AVCONFIG_H
6436 EOF
6437
6438 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6439
6440 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6441
6442 cp_if_changed $TMPH libavutil/avconfig.h
6443
6444 if test -n "$WARNINGS"; then
6445     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6446     enabled fatal_warnings && exit 1
6447 fi
6448
6449 # build pkg-config files
6450
6451 lib_version(){
6452     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6453 }
6454
6455 pkgconfig_generate(){
6456     name=$1
6457     shortname=${name#lib}${build_suffix}
6458     comment=$2
6459     version=$3
6460     libs=$4
6461     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6462     requires=${requires%, }
6463     enabled ${name#lib} || return 0
6464     mkdir -p $name
6465     cat <<EOF > $name/$name${build_suffix}.pc
6466 prefix=$prefix
6467 exec_prefix=\${prefix}
6468 libdir=$libdir
6469 includedir=$incdir
6470
6471 Name: $name
6472 Description: $comment
6473 Version: $version
6474 Requires: $(enabled shared || echo $requires)
6475 Requires.private: $(enabled shared && echo $requires)
6476 Conflicts:
6477 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6478 Libs.private: $(enabled shared && echo $libs)
6479 Cflags: -I\${includedir}
6480 EOF
6481
6482 mkdir -p doc/examples/pc-uninstalled
6483 includedir=${source_path}
6484 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6485     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6486 prefix=
6487 exec_prefix=
6488 libdir=\${pcfiledir}/../../../$name
6489 includedir=${includedir}
6490
6491 Name: $name
6492 Description: $comment
6493 Version: $version
6494 Requires: $requires
6495 Conflicts:
6496 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6497 Cflags: -I\${includedir}
6498 EOF
6499 }
6500
6501 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6502 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6503 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6504 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6505 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6506 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6507 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6508 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6509 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"