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   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU 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   --disable-audiotoolbox   enable AudioToolbox decoders and encoders [autodetect]
 198   --enable-avisynth        enable reading of AviSynth script files [no]
 199   --disable-bzlib          disable bzlib [autodetect]
 200   --enable-cuda            enable dynamically linked CUDA [no]
 201   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 202   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 203   --enable-frei0r          enable frei0r video filtering [no]
 204   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 205                            if openssl, librtmp or gmp is not used [no]
 206   --enable-gmp             enable gmp, needed for rtmp(t)e support
 207                            if openssl or librtmp is not used [no]
 208   --enable-gnutls          enable gnutls, needed for https support
 209                            if openssl is not used [no]
 210   --disable-iconv          disable iconv [autodetect]
 211   --enable-jni             enable JNI support [no]
 212   --enable-ladspa          enable LADSPA audio filtering [no]
 213   --enable-libass          enable libass subtitles rendering,
 214                            needed for subtitles and ass filter [no]
 215   --enable-libbluray       enable BluRay reading using libbluray [no]
 216   --enable-libbs2b         enable bs2b DSP library [no]
 217   --enable-libcaca         enable textual display using libcaca [no]
 218   --enable-libcelt         enable CELT decoding via libcelt [no]
 219   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 220   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 221                            and libraw1394 [no]
 222   --enable-libfaac         enable AAC encoding via libfaac [no]
 223   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 224   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 225   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 226   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 227   --enable-libgme          enable Game Music Emu via libgme [no]
 228   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 229   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 230   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 231   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 232   --enable-libmfx          enable HW acceleration through libmfx
 233   --enable-libmodplug      enable ModPlug via libmodplug [no]
 234   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 235   --enable-libnut          enable NUT (de)muxing via libnut,
 236                            native (de)muxer exists [no]
 237   --enable-libnpp          enable NVIDIA Performance Primitives-based code [no]
 238   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 239   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 240   --enable-libopencv       enable video filtering via libopencv [no]
 241   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 242   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 243   --enable-libopus         enable Opus de/encoding via libopus [no]
 244   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 245   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 246   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 247   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 248   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 249   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 250   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 251   --enable-libsoxr         enable Include libsoxr resampling [no]
 252   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 253   --enable-libssh          enable SFTP protocol via libssh [no]
 254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 255   --enable-libtheora       enable Theora encoding via libtheora [no]
 256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 257   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 258   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 259   --enable-libvidstab      enable video stabilization using vid.stab [no]
 260   --enable-libvo-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-mediacodec      enable Android MediaCodec support [no]
 281   --enable-mmal            enable decoding via MMAL [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-nvenc           enable NVIDIA NVENC support [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl            disable sdl [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 295   --enable-x11grab         enable X11 grabbing (legacy) [no]
 296   --disable-xlib           disable xlib [autodetect]
 297   --disable-zlib           disable zlib [autodetect]
 298
 299 Toolchain options:
 300   --arch=ARCH              select architecture [$arch]
 301   --cpu=CPU                select the minimum required CPU (affects
 302                            instruction selection, may crash on older CPUs)
 303   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 304   --progs-suffix=SUFFIX    program name suffix []
 305   --enable-cross-compile   assume a cross-compiler is used
 306   --sysroot=PATH           root of cross-build tree
 307   --sysinclude=PATH        location of cross-build system headers
 308   --target-os=OS           compiler targets OS [$target_os]
 309   --target-exec=CMD        command to run executables on target
 310   --target-path=DIR        path to view of build directory on target
 311   --target-samples=DIR     path to samples directory on target
 312   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 313   --toolchain=NAME         set tool defaults according to NAME
 314   --nm=NM                  use nm tool NM [$nm_default]
 315   --ar=AR                  use archive tool AR [$ar_default]
 316   --as=AS                  use assembler AS [$as_default]
 317   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 318   --strip=STRIP            use strip tool STRIP [$strip_default]
 319   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 320   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 321   --cc=CC                  use C compiler CC [$cc_default]
 322   --cxx=CXX                use C compiler CXX [$cxx_default]
 323   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 324   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 325   --ld=LD                  use linker LD [$ld_default]
 326   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 327   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 328   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 329   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 330   --host-cc=HOSTCC         use host C compiler HOSTCC
 331   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 332   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 333   --host-ld=HOSTLD         use host linker HOSTLD
 334   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 335   --host-libs=HLIBS        use libs HLIBS when linking for host
 336   --host-os=OS             compiler host OS [$target_os]
 337   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 338   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 339   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 340   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 341   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 342   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 343   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 344   --extra-version=STRING   version string suffix []
 345   --optflags=OPTFLAGS      override optimization-related compiler flags
 346   --build-suffix=SUFFIX    library name suffix []
 347   --enable-pic             build position-independent code
 348   --enable-thumb           compile for Thumb instruction set
 349   --enable-lto             use link-time optimization
 350   --env="ENV=override"     override the environment variables
 351
 352 Advanced options (experts only):
 353   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 354   --custom-allocator=NAME  use a supported custom allocator
 355   --disable-symver         disable symbol versioning
 356   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 357   --disable-safe-bitstream-reader
 358                            disable buffer boundary checking in bitreaders
 359                            (faster, but may crash)
 360   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 361   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 362
 363 Optimization options (experts only):
 364   --disable-asm            disable all assembly optimizations
 365   --disable-altivec        disable AltiVec optimizations
 366   --disable-vsx            disable VSX optimizations
 367   --disable-power8         disable POWER8 optimizations
 368   --disable-amd3dnow       disable 3DNow! optimizations
 369   --disable-amd3dnowext    disable 3DNow! extended optimizations
 370   --disable-mmx            disable MMX optimizations
 371   --disable-mmxext         disable MMXEXT optimizations
 372   --disable-sse            disable SSE optimizations
 373   --disable-sse2           disable SSE2 optimizations
 374   --disable-sse3           disable SSE3 optimizations
 375   --disable-ssse3          disable SSSE3 optimizations
 376   --disable-sse4           disable SSE4 optimizations
 377   --disable-sse42          disable SSE4.2 optimizations
 378   --disable-avx            disable AVX optimizations
 379   --disable-xop            disable XOP optimizations
 380   --disable-fma3           disable FMA3 optimizations
 381   --disable-fma4           disable FMA4 optimizations
 382   --disable-avx2           disable AVX2 optimizations
 383   --disable-aesni          disable AESNI optimizations
 384   --disable-armv5te        disable armv5te optimizations
 385   --disable-armv6          disable armv6 optimizations
 386   --disable-armv6t2        disable armv6t2 optimizations
 387   --disable-vfp            disable VFP optimizations
 388   --disable-neon           disable NEON optimizations
 389   --disable-inline-asm     disable use of inline assembly
 390   --disable-yasm           disable use of nasm/yasm assembly
 391   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 392   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 393   --disable-msa            disable MSA optimizations
 394   --disable-mipsfpu        disable floating point MIPS optimizations
 395   --disable-mmi            disable Loongson SIMD optimizations
 396   --disable-fast-unaligned consider unaligned accesses slow
 397
 398 Developer options (useful when working on FFmpeg itself):
 399   --disable-debug          disable debugging symbols
 400   --enable-debug=LEVEL     set the debug level [$debuglevel]
 401   --disable-optimizations  disable compiler optimizations
 402   --enable-extra-warnings  enable more compiler warnings
 403   --disable-stripping      disable stripping of executables and shared libraries
 404   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 405                            2 causes a slowdown at runtime.
 406   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 407   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 408                            leaks and errors, using the specified valgrind binary.
 409                            Cannot be combined with --target-exec
 410   --enable-ftrapv          Trap arithmetic overflows
 411   --samples=PATH           location of test samples for FATE, if not set use
 412                            \$FATE_SAMPLES at make invocation time.
 413   --enable-neon-clobber-test check NEON registers for clobbering (should be
 414                            used only for debugging purposes)
 415   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 416                            should be used only for debugging purposes)
 417   --enable-random          randomly enable/disable components
 418   --disable-random
 419   --enable-random=LIST     randomly enable/disable specific components or
 420   --disable-random=LIST    component groups. LIST is a comma-separated list
 421                            of NAME[:PROB] entries where NAME is a component
 422                            (group) and PROB the probability associated with
 423                            NAME (default 0.5).
 424   --random-seed=VALUE      seed value for --enable/disable-random
 425   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 426                            (only applies to --disable-optimizations builds)
 427
 428 NOTE: Object files are built at the place where configure is launched.
 429 EOF
 430   exit 0
 431 }
 432
 433 quotes='""'
 434 if test -t 1 && which tput >/dev/null 2>&1; then
 435     ncolors=$(tput colors)
 436     if test -n "$ncolors" && test $ncolors -ge 8; then
 437         bold_color=$(tput bold)
 438         warn_color=$(tput setaf 3)
 439         error_color=$(tput setaf 1)
 440         reset_color=$(tput sgr0)
 441     fi
 442     # 72 used instead of 80 since that's the default of pr
 443     ncols=$(tput cols)
 444 fi
 445 : ${ncols:=72}
 446
 447 log(){
 448     echo "$@" >> $logfile
 449 }
 450
 451 log_file(){
 452     log BEGIN $1
 453     pr -n -t $1 >> $logfile
 454     log END $1
 455 }
 456
 457 warn(){
 458     log "WARNING: $*"
 459     WARNINGS="${WARNINGS}WARNING: $*\n"
 460 }
 461
 462 die(){
 463     log "$@"
 464     echo "$error_color$bold_color$@$reset_color"
 465     cat <<EOF
 466
 467 If you think configure made a mistake, make sure you are using the latest
 468 version from Git.  If the latest version fails, report the problem to the
 469 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 470 EOF
 471     if disabled logging; then
 472         cat <<EOF
 473 Rerun configure with logging enabled (do not use --disable-logging), and
 474 include the log this produces with your report.
 475 EOF
 476     else
 477         cat <<EOF
 478 Include the log file "$logfile" produced by configure as this will help
 479 solve the problem.
 480 EOF
 481     fi
 482     exit 1
 483 }
 484
 485 # Avoid locale weirdness, besides we really just want to translate ASCII.
 486 toupper(){
 487     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 488 }
 489
 490 tolower(){
 491     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 492 }
 493
 494 c_escape(){
 495     echo "$*" | sed 's/["\\]/\\\0/g'
 496 }
 497
 498 sh_quote(){
 499     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 500     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 501     echo "$v"
 502 }
 503
 504 cleanws(){
 505     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 506 }
 507
 508 filter(){
 509     pat=$1
 510     shift
 511     for v; do
 512         eval "case $v in $pat) echo $v ;; esac"
 513     done
 514 }
 515
 516 filter_out(){
 517     pat=$1
 518     shift
 519     for v; do
 520         eval "case $v in $pat) ;; *) echo $v ;; esac"
 521     done
 522 }
 523
 524 map(){
 525     m=$1
 526     shift
 527     for v; do eval $m; done
 528 }
 529
 530 add_suffix(){
 531     suffix=$1
 532     shift
 533     for v; do echo ${v}${suffix}; done
 534 }
 535
 536 set_all(){
 537     value=$1
 538     shift
 539     for var in $*; do
 540         eval $var=$value
 541     done
 542 }
 543
 544 set_weak(){
 545     value=$1
 546     shift
 547     for var; do
 548         eval : \${$var:=$value}
 549     done
 550 }
 551
 552 sanitize_var_name(){
 553     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 554 }
 555
 556 set_safe(){
 557     var=$1
 558     shift
 559     eval $(sanitize_var_name "$var")='$*'
 560 }
 561
 562 get_safe(){
 563     eval echo \$$(sanitize_var_name "$1")
 564 }
 565
 566 pushvar(){
 567     for pvar in $*; do
 568         eval level=\${${pvar}_level:=0}
 569         eval ${pvar}_${level}="\$$pvar"
 570         eval ${pvar}_level=$(($level+1))
 571     done
 572 }
 573
 574 popvar(){
 575     for pvar in $*; do
 576         eval level=\${${pvar}_level:-0}
 577         test $level = 0 && continue
 578         eval level=$(($level-1))
 579         eval $pvar="\${${pvar}_${level}}"
 580         eval ${pvar}_level=$level
 581         eval unset ${pvar}_${level}
 582     done
 583 }
 584
 585 enable(){
 586     set_all yes $*
 587 }
 588
 589 disable(){
 590     set_all no $*
 591 }
 592
 593 enable_weak(){
 594     set_weak yes $*
 595 }
 596
 597 disable_weak(){
 598     set_weak no $*
 599 }
 600
 601 enable_safe(){
 602     for var; do
 603         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 604     done
 605 }
 606
 607 disable_safe(){
 608     for var; do
 609         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 610     done
 611 }
 612
 613 do_enable_deep(){
 614     for var; do
 615         enabled $var && continue
 616         eval sel="\$${var}_select"
 617         eval sgs="\$${var}_suggest"
 618         pushvar var sgs
 619         enable_deep $sel
 620         popvar sgs
 621         enable_deep_weak $sgs
 622         popvar var
 623     done
 624 }
 625
 626 enable_deep(){
 627     do_enable_deep $*
 628     enable $*
 629 }
 630
 631 enable_deep_weak(){
 632     for var; do
 633         disabled $var && continue
 634         pushvar var
 635         do_enable_deep $var
 636         popvar var
 637         enable_weak $var
 638     done
 639 }
 640
 641 enabled(){
 642     test "${1#!}" = "$1" && op='=' || op=!=
 643     eval test "x\$${1#!}" $op "xyes"
 644 }
 645
 646 disabled(){
 647     test "${1#!}" = "$1" && op='=' || op=!=
 648     eval test "x\$${1#!}" $op "xno"
 649 }
 650
 651 enabled_all(){
 652     for opt; do
 653         enabled $opt || return 1
 654     done
 655 }
 656
 657 disabled_all(){
 658     for opt; do
 659         disabled $opt || return 1
 660     done
 661 }
 662
 663 enabled_any(){
 664     for opt; do
 665         enabled $opt && return 0
 666     done
 667 }
 668
 669 disabled_any(){
 670     for opt; do
 671         disabled $opt && return 0
 672     done
 673     return 1
 674 }
 675
 676 set_default(){
 677     for opt; do
 678         eval : \${$opt:=\$${opt}_default}
 679     done
 680 }
 681
 682 is_in(){
 683     value=$1
 684     shift
 685     for var in $*; do
 686         [ $var = $value ] && return 0
 687     done
 688     return 1
 689 }
 690
 691 do_check_deps(){
 692     for cfg; do
 693         cfg="${cfg#!}"
 694         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 695         disabled ${cfg}_checking && continue
 696         enable ${cfg}_checking
 697         append allopts $cfg
 698
 699         eval dep_all="\$${cfg}_deps"
 700         eval dep_any="\$${cfg}_deps_any"
 701         eval dep_sel="\$${cfg}_select"
 702         eval dep_sgs="\$${cfg}_suggest"
 703         eval dep_ifa="\$${cfg}_if"
 704         eval dep_ifn="\$${cfg}_if_any"
 705
 706         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 707         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 708         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 709
 710         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 711         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 712         enabled_all  $dep_all || disable $cfg
 713         enabled_any  $dep_any || disable $cfg
 714         disabled_any $dep_sel && disable $cfg
 715
 716         if enabled $cfg; then
 717             enable_deep $dep_sel
 718             enable_deep_weak $dep_sgs
 719         fi
 720
 721         disable ${cfg}_checking
 722     done
 723 }
 724
 725 check_deps(){
 726     unset allopts
 727
 728     do_check_deps "$@"
 729
 730     for cfg in $allopts; do
 731         enabled $cfg || continue
 732         eval dep_extralibs="\$${cfg}_extralibs"
 733         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 734     done
 735 }
 736
 737 print_config(){
 738     pfx=$1
 739     files=$2
 740     shift 2
 741     map 'eval echo "$v \${$v:-no}"' "$@" |
 742     awk "BEGIN { split(\"$files\", files) }
 743         {
 744             c = \"$pfx\" toupper(\$1);
 745             v = \$2;
 746             sub(/yes/, 1, v);
 747             sub(/no/,  0, v);
 748             for (f in files) {
 749                 file = files[f];
 750                 if (file ~ /\\.h\$/) {
 751                     printf(\"#define %s %d\\n\", c, v) >>file;
 752                 } else if (file ~ /\\.asm\$/) {
 753                     printf(\"%%define %s %d\\n\", c, v) >>file;
 754                 } else if (file ~ /\\.mak\$/) {
 755                     n = -v ? \"\" : \"!\";
 756                     printf(\"%s%s=yes\\n\", n, c) >>file;
 757                 } else if (file ~ /\\.texi\$/) {
 758                     pre = -v ? \"\" : \"@c \";
 759                     yesno = \$2;
 760                     c2 = tolower(c);
 761                     gsub(/_/, \"-\", c2);
 762                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 763                 }
 764             }
 765         }"
 766 }
 767
 768 print_enabled(){
 769     suf=$1
 770     shift
 771     for v; do
 772         enabled $v && printf "%s\n" ${v%$suf};
 773     done
 774 }
 775
 776 append(){
 777     var=$1
 778     shift
 779     eval "$var=\"\$$var $*\""
 780 }
 781
 782 prepend(){
 783     var=$1
 784     shift
 785     eval "$var=\"$* \$$var\""
 786 }
 787
 788 unique(){
 789     var=$1
 790     uniq_list=""
 791     for tok in $(eval echo \$$var); do
 792         uniq_list="$(filter_out $tok $uniq_list) $tok"
 793     done
 794     eval "$var=\"${uniq_list}\""
 795 }
 796
 797 add_cppflags(){
 798     append CPPFLAGS "$@"
 799 }
 800
 801 add_cflags(){
 802     append CFLAGS $($cflags_filter "$@")
 803 }
 804
 805 add_cxxflags(){
 806     append CXXFLAGS $($cflags_filter "$@")
 807 }
 808
 809 add_asflags(){
 810     append ASFLAGS $($asflags_filter "$@")
 811 }
 812
 813 add_objcflags(){
 814     append OBJCFLAGS $($objcflags_filter "$@")
 815 }
 816
 817 add_ldflags(){
 818     append LDFLAGS $($ldflags_filter "$@")
 819 }
 820
 821 add_ldexeflags(){
 822     append LDEXEFLAGS $($ldflags_filter "$@")
 823 }
 824
 825 add_ldlibflags(){
 826     append LDLIBFLAGS $($ldflags_filter "$@")
 827 }
 828
 829 add_stripflags(){
 830     append ASMSTRIPFLAGS "$@"
 831 }
 832
 833 add_extralibs(){
 834     prepend extralibs $($ldflags_filter "$@")
 835 }
 836
 837 add_host_cppflags(){
 838     append host_cppflags "$@"
 839 }
 840
 841 add_host_cflags(){
 842     append host_cflags $($host_cflags_filter "$@")
 843 }
 844
 845 add_host_ldflags(){
 846     append host_ldflags $($host_ldflags_filter "$@")
 847 }
 848
 849 add_compat(){
 850     append compat_objs $1
 851     shift
 852     map 'add_cppflags -D$v' "$@"
 853 }
 854
 855 check_cmd(){
 856     log "$@"
 857     "$@" >> $logfile 2>&1
 858 }
 859
 860 check_stat(){
 861     log check_stat "$@"
 862     stat "$1" >> $logfile 2>&1
 863 }
 864
 865 cc_o(){
 866     eval printf '%s\\n' $CC_O
 867 }
 868
 869 cc_e(){
 870     eval printf '%s\\n' $CC_E
 871 }
 872
 873 check_cc(){
 874     log check_cc "$@"
 875     cat > $TMPC
 876     log_file $TMPC
 877     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 878 }
 879
 880 check_cxx(){
 881     log check_cxx "$@"
 882     cat > $TMPCPP
 883     log_file $TMPCPP
 884     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 885 }
 886
 887 check_objcc(){
 888     log check_objcc "$@"
 889     cat > $TMPM
 890     log_file $TMPM
 891     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 892 }
 893
 894 check_cpp(){
 895     log check_cpp "$@"
 896     cat > $TMPC
 897     log_file $TMPC
 898     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 899 }
 900
 901 as_o(){
 902     eval printf '%s\\n' $AS_O
 903 }
 904
 905 check_as(){
 906     log check_as "$@"
 907     cat > $TMPS
 908     log_file $TMPS
 909     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 910 }
 911
 912 check_inline_asm(){
 913     log check_inline_asm "$@"
 914     name="$1"
 915     code="$2"
 916     shift 2
 917     disable $name
 918     check_cc "$@" <<EOF && enable $name
 919 void foo(void){ __asm__ volatile($code); }
 920 EOF
 921 }
 922
 923 check_inline_asm_flags(){
 924     log check_inline_asm_flags "$@"
 925     name="$1"
 926     code="$2"
 927     flags=''
 928     shift 2
 929     while [ "$1" != "" ]; do
 930       append flags $1
 931       shift
 932     done;
 933     disable $name
 934     cat > $TMPC <<EOF
 935 void foo(void){ __asm__ volatile($code); }
 936 EOF
 937     log_file $TMPC
 938     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 939     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 940 }
 941
 942 check_insn(){
 943     log check_insn "$@"
 944     check_inline_asm ${1}_inline "\"$2\""
 945     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 946 }
 947
 948 check_yasm(){
 949     log check_yasm "$@"
 950     echo "$1" > $TMPS
 951     log_file $TMPS
 952     shift 1
 953     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 954 }
 955
 956 ld_o(){
 957     eval printf '%s\\n' $LD_O
 958 }
 959
 960 check_ld(){
 961     log check_ld "$@"
 962     type=$1
 963     shift 1
 964     flags=$(filter_out '-l*|*.so' $@)
 965     libs=$(filter '-l*|*.so' $@)
 966     check_$type $($cflags_filter $flags) || return
 967     flags=$($ldflags_filter $flags)
 968     libs=$($ldflags_filter $libs)
 969     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 970 }
 971
 972 print_include(){
 973     hdr=$1
 974     test "${hdr%.h}" = "${hdr}" &&
 975         echo "#include $hdr"    ||
 976         echo "#include <$hdr>"
 977 }
 978
 979 check_code(){
 980     log check_code "$@"
 981     check=$1
 982     headers=$2
 983     code=$3
 984     shift 3
 985     {
 986         for hdr in $headers; do
 987             print_include $hdr
 988         done
 989         echo "int main(void) { $code; return 0; }"
 990     } | check_$check "$@"
 991 }
 992
 993 check_cppflags(){
 994     log check_cppflags "$@"
 995     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 996 int x;
 997 EOF
 998 }
 999
1000 test_cflags(){
1001     log test_cflags "$@"
1002     set -- $($cflags_filter "$@")
1003     check_cc "$@" <<EOF
1004 int x;
1005 EOF
1006 }
1007
1008 check_cflags(){
1009     log check_cflags "$@"
1010     test_cflags "$@" && add_cflags "$@"
1011 }
1012
1013 check_cxxflags(){
1014     log check_cxxflags "$@"
1015     set -- $($cflags_filter "$@")
1016     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1017 int x;
1018 EOF
1019 }
1020
1021 test_objcflags(){
1022     log test_cflags "$@"
1023     set -- $($cflags_filter "$@")
1024     check_objcc "$@" <<EOF
1025 int x;
1026 EOF
1027 }
1028
1029 check_objcflags(){
1030     log check_cflags "$@"
1031     test_objcflags "$@" && add_objcflags "$@"
1032 }
1033
1034 test_ldflags(){
1035     log test_ldflags "$@"
1036     check_ld "cc" "$@" <<EOF
1037 int main(void){ return 0; }
1038 EOF
1039 }
1040
1041 check_ldflags(){
1042     log check_ldflags "$@"
1043     test_ldflags "$@" && add_ldflags "$@"
1044 }
1045
1046 test_stripflags(){
1047     log test_stripflags "$@"
1048     # call check_cc to get a fresh TMPO
1049     check_cc <<EOF
1050 int main(void) { return 0; }
1051 EOF
1052     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1053 }
1054
1055 check_stripflags(){
1056     log check_stripflags "$@"
1057     test_stripflags "$@" && add_stripflags "$@"
1058 }
1059
1060 check_header(){
1061     log check_header "$@"
1062     header=$1
1063     shift
1064     disable_safe $header
1065     check_cpp "$@" <<EOF && enable_safe $header
1066 #include <$header>
1067 int x;
1068 EOF
1069 }
1070
1071 check_header_objcc(){
1072     log check_header_objcc "$@"
1073     rm -f -- "$TMPO"
1074     header=$1
1075     shift
1076     disable_safe $header
1077     {
1078        echo "#include <$header>"
1079        echo "int main(void) { return 0; }"
1080     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1081 }
1082
1083 check_func(){
1084     log check_func "$@"
1085     func=$1
1086     shift
1087     disable $func
1088     check_ld "cc" "$@" <<EOF && enable $func
1089 extern int $func();
1090 int main(void){ $func(); }
1091 EOF
1092 }
1093
1094 check_complexfunc(){
1095     log check_complexfunc "$@"
1096     func=$1
1097     narg=$2
1098     shift 2
1099     test $narg = 2 && args="f, g" || args="f * I"
1100     disable $func
1101     check_ld "cc" "$@" <<EOF && enable $func
1102 #include <complex.h>
1103 #include <math.h>
1104 float foo(complex float f, complex float g) { return $func($args); }
1105 int main(void){ return (int) foo; }
1106 EOF
1107 }
1108
1109 check_mathfunc(){
1110     log check_mathfunc "$@"
1111     func=$1
1112     narg=$2
1113     shift 2
1114     test $narg = 2 && args="f, g" || args="f"
1115     disable $func
1116     check_ld "cc" "$@" <<EOF && enable $func
1117 #include <math.h>
1118 float foo(float f, float g) { return $func($args); }
1119 int main(void){ return (int) foo; }
1120 EOF
1121 }
1122
1123 check_func_headers(){
1124     log check_func_headers "$@"
1125     headers=$1
1126     funcs=$2
1127     shift 2
1128     {
1129         for hdr in $headers; do
1130             print_include $hdr
1131         done
1132         for func in $funcs; do
1133             echo "long check_$func(void) { return (long) $func; }"
1134         done
1135         echo "int main(void) { return 0; }"
1136     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1137 }
1138
1139 check_class_headers_cpp(){
1140     log check_class_headers_cpp "$@"
1141     headers=$1
1142     classes=$2
1143     shift 2
1144     {
1145         for hdr in $headers; do
1146             echo "#include <$hdr>"
1147         done
1148         echo "int main(void) { "
1149         i=1
1150         for class in $classes; do
1151             echo "$class obj$i;"
1152             i=$(expr $i + 1)
1153         done
1154         echo "return 0; }"
1155     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1156 }
1157
1158 check_cpp_condition(){
1159     log check_cpp_condition "$@"
1160     header=$1
1161     condition=$2
1162     shift 2
1163     check_cpp "$@" <<EOF
1164 #include <$header>
1165 #if !($condition)
1166 #error "unsatisfied condition: $condition"
1167 #endif
1168 EOF
1169 }
1170
1171 check_lib(){
1172     log check_lib "$@"
1173     header="$1"
1174     func="$2"
1175     shift 2
1176     check_header $header && check_func $func "$@" && add_extralibs "$@"
1177 }
1178
1179 check_lib2(){
1180     log check_lib2 "$@"
1181     headers="$1"
1182     funcs="$2"
1183     shift 2
1184     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1185 }
1186
1187 check_lib_cpp(){
1188     log check_lib_cpp "$@"
1189     headers="$1"
1190     classes="$2"
1191     shift 2
1192     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1193 }
1194
1195 check_pkg_config(){
1196     log check_pkg_config "$@"
1197     pkgandversion="$1"
1198     pkg="${1%% *}"
1199     headers="$2"
1200     funcs="$3"
1201     shift 3
1202     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1203     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1204     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1205     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1206         set_safe "${pkg}_cflags" $pkg_cflags   &&
1207         set_safe "${pkg}_libs"   $pkg_libs
1208 }
1209
1210 check_exec(){
1211     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1212 }
1213
1214 check_exec_crash(){
1215     code=$(cat)
1216
1217     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1218     # are safe but may not be available everywhere.  Thus we use
1219     # raise(SIGTERM) instead.  The check is run in a subshell so we
1220     # can redirect the "Terminated" message from the shell.  SIGBUS
1221     # is not defined by standard C so it is used conditionally.
1222
1223     (check_exec "$@") >> $logfile 2>&1 <<EOF
1224 #include <signal.h>
1225 static void sighandler(int sig){
1226     raise(SIGTERM);
1227 }
1228 int foo(void){
1229     $code
1230 }
1231 int (*func_ptr)(void) = foo;
1232 int main(void){
1233     signal(SIGILL, sighandler);
1234     signal(SIGFPE, sighandler);
1235     signal(SIGSEGV, sighandler);
1236 #ifdef SIGBUS
1237     signal(SIGBUS, sighandler);
1238 #endif
1239     return func_ptr();
1240 }
1241 EOF
1242 }
1243
1244 check_type(){
1245     log check_type "$@"
1246     headers=$1
1247     type=$2
1248     shift 2
1249     disable_safe "$type"
1250     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1251 }
1252
1253 check_struct(){
1254     log check_struct "$@"
1255     headers=$1
1256     struct=$2
1257     member=$3
1258     shift 3
1259     disable_safe "${struct}_${member}"
1260     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1261         enable_safe "${struct}_${member}"
1262 }
1263
1264 check_builtin(){
1265     log check_builtin "$@"
1266     name=$1
1267     headers=$2
1268     builtin=$3
1269     shift 3
1270     disable "$name"
1271     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1272 }
1273
1274 check_compile_assert(){
1275     log check_compile_assert "$@"
1276     name=$1
1277     headers=$2
1278     condition=$3
1279     shift 3
1280     disable "$name"
1281     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1282 }
1283
1284 require(){
1285     name="$1"
1286     header="$2"
1287     func="$3"
1288     shift 3
1289     check_lib $header $func "$@" || die "ERROR: $name not found"
1290 }
1291
1292 require2(){
1293     name="$1"
1294     headers="$2"
1295     func="$3"
1296     shift 3
1297     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1298 }
1299
1300 require_cpp(){
1301     name="$1"
1302     headers="$2"
1303     classes="$3"
1304     shift 3
1305     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1306 }
1307
1308 use_pkg_config(){
1309     pkg="$1"
1310     check_pkg_config "$@" || return 1
1311     add_cflags    $(get_safe "${pkg}_cflags")
1312     add_extralibs $(get_safe "${pkg}_libs")
1313 }
1314
1315 require_pkg_config(){
1316     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1317 }
1318
1319 require_libfreetype(){
1320     log require_libfreetype "$@"
1321     pkg="freetype2"
1322     check_cmd $pkg_config --exists --print-errors $pkg \
1323       || die "ERROR: $pkg not found"
1324     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1325     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1326     {
1327         echo "#include <ft2build.h>"
1328         echo "#include FT_FREETYPE_H"
1329         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1330         echo "int main(void) { return 0; }"
1331     } | check_ld "cc" $pkg_cflags $pkg_libs \
1332       && set_safe "${pkg}_cflags" $pkg_cflags \
1333       && set_safe "${pkg}_libs"   $pkg_libs \
1334       || die "ERROR: $pkg not found"
1335     add_cflags    $(get_safe "${pkg}_cflags")
1336     add_extralibs $(get_safe "${pkg}_libs")
1337 }
1338
1339 hostcc_e(){
1340     eval printf '%s\\n' $HOSTCC_E
1341 }
1342
1343 hostcc_o(){
1344     eval printf '%s\\n' $HOSTCC_O
1345 }
1346
1347 check_host_cc(){
1348     log check_host_cc "$@"
1349     cat > $TMPC
1350     log_file $TMPC
1351     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1352 }
1353
1354 check_host_cpp(){
1355     log check_host_cpp "$@"
1356     cat > $TMPC
1357     log_file $TMPC
1358     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1359 }
1360
1361 check_host_cppflags(){
1362     log check_host_cppflags "$@"
1363     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1364 int x;
1365 EOF
1366 }
1367
1368 check_host_cflags(){
1369     log check_host_cflags "$@"
1370     set -- $($host_cflags_filter "$@")
1371     check_host_cc "$@" <<EOF && append host_cflags "$@"
1372 int x;
1373 EOF
1374 }
1375
1376 check_host_cpp_condition(){
1377     log check_host_cpp_condition "$@"
1378     header=$1
1379     condition=$2
1380     shift 2
1381     check_host_cpp "$@" <<EOF
1382 #include <$header>
1383 #if !($condition)
1384 #error "unsatisfied condition: $condition"
1385 #endif
1386 EOF
1387 }
1388
1389 cp_if_changed(){
1390     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1391     mkdir -p "$(dirname $2)"
1392     $cp_f "$1" "$2"
1393 }
1394
1395 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1396 # system-dependent things.
1397
1398 AVCODEC_COMPONENTS="
1399     bsfs
1400     decoders
1401     encoders
1402     hwaccels
1403     parsers
1404 "
1405
1406 AVDEVICE_COMPONENTS="
1407     indevs
1408     outdevs
1409 "
1410 AVFILTER_COMPONENTS="
1411     filters
1412 "
1413 AVFORMAT_COMPONENTS="
1414     demuxers
1415     muxers
1416     protocols
1417 "
1418
1419 AVRESAMPLE_COMPONENTS=""
1420 AVUTIL_COMPONENTS=""
1421
1422 COMPONENT_LIST="
1423     $AVCODEC_COMPONENTS
1424     $AVDEVICE_COMPONENTS
1425     $AVFILTER_COMPONENTS
1426     $AVFORMAT_COMPONENTS
1427     $AVRESAMPLE_COMPONENTS
1428     $AVUTIL_COMPONENTS
1429 "
1430
1431 EXAMPLE_LIST="
1432     avio_reading_example
1433     avio_dir_cmd_example
1434     decoding_encoding_example
1435     demuxing_decoding_example
1436     extract_mvs_example
1437     filter_audio_example
1438     filtering_audio_example
1439     filtering_video_example
1440     metadata_example
1441     muxing_example
1442     qsvdec_example
1443     remuxing_example
1444     resampling_audio_example
1445     scaling_video_example
1446     transcode_aac_example
1447     transcoding_example
1448 "
1449
1450 EXTERNAL_LIBRARY_LIST="
1451     audiotoolbox
1452     avisynth
1453     bzlib
1454     chromaprint
1455     crystalhd
1456     cuda
1457     decklink
1458     frei0r
1459     gcrypt
1460     gmp
1461     gnutls
1462     iconv
1463     jni
1464     ladspa
1465     libass
1466     libbluray
1467     libbs2b
1468     libcaca
1469     libcdio
1470     libcelt
1471     libdc1394
1472     libfaac
1473     libfdk_aac
1474     libflite
1475     libfontconfig
1476     libfreetype
1477     libfribidi
1478     libgme
1479     libgsm
1480     libiec61883
1481     libilbc
1482     libkvazaar
1483     libmfx
1484     libmodplug
1485     libmp3lame
1486     libnut
1487     libnpp
1488     libopencore_amrnb
1489     libopencore_amrwb
1490     libopencv
1491     libopenh264
1492     libopenjpeg
1493     libopus
1494     libpulse
1495     librtmp
1496     librubberband
1497     libschroedinger
1498     libshine
1499     libsmbclient
1500     libsnappy
1501     libsoxr
1502     libspeex
1503     libssh
1504     libtesseract
1505     libtheora
1506     libtwolame
1507     libutvideo
1508     libv4l2
1509     libvidstab
1510     libvo_amrwbenc
1511     libvorbis
1512     libvpx
1513     libwavpack
1514     libwebp
1515     libx264
1516     libx265
1517     libxavs
1518     libxcb
1519     libxcb_shm
1520     libxcb_shape
1521     libxcb_xfixes
1522     libxvid
1523     libzimg
1524     libzmq
1525     libzvbi
1526     lzma
1527     mediacodec
1528     mmal
1529     netcdf
1530     nvenc
1531     openal
1532     opencl
1533     opengl
1534     openssl
1535     schannel
1536     sdl
1537     securetransport
1538     videotoolbox
1539     x11grab
1540     xlib
1541     zlib
1542 "
1543
1544 DOCUMENT_LIST="
1545     doc
1546     htmlpages
1547     manpages
1548     podpages
1549     txtpages
1550 "
1551
1552 FEATURE_LIST="
1553     ftrapv
1554     gray
1555     hardcoded_tables
1556     runtime_cpudetect
1557     safe_bitstream_reader
1558     shared
1559     small
1560     static
1561     swscale_alpha
1562 "
1563
1564 HWACCEL_LIST="
1565     d3d11va
1566     dxva2
1567     vaapi
1568     vda
1569     vdpau
1570     videotoolbox_hwaccel
1571     xvmc
1572 "
1573
1574 LIBRARY_LIST="
1575     avcodec
1576     avdevice
1577     avfilter
1578     avformat
1579     avresample
1580     avutil
1581     postproc
1582     swresample
1583     swscale
1584 "
1585
1586 LICENSE_LIST="
1587     gpl
1588     nonfree
1589     version3
1590 "
1591
1592 PROGRAM_LIST="
1593     ffplay
1594     ffprobe
1595     ffserver
1596     ffmpeg
1597 "
1598
1599 SUBSYSTEM_LIST="
1600     dct
1601     dwt
1602     error_resilience
1603     faan
1604     fast_unaligned
1605     fft
1606     lsp
1607     lzo
1608     mdct
1609     pixelutils
1610     network
1611     rdft
1612 "
1613
1614 CONFIG_LIST="
1615     $COMPONENT_LIST
1616     $DOCUMENT_LIST
1617     $EXAMPLE_LIST
1618     $EXTERNAL_LIBRARY_LIST
1619     $FEATURE_LIST
1620     $HWACCEL_LIST
1621     $LICENSE_LIST
1622     $LIBRARY_LIST
1623     $PROGRAM_LIST
1624     $SUBSYSTEM_LIST
1625     fontconfig
1626     incompatible_libav_abi
1627     memalign_hack
1628     memory_poisoning
1629     neon_clobber_test
1630     pic
1631     pod2man
1632     raise_major
1633     thumb
1634     valgrind_backtrace
1635     xmm_clobber_test
1636 "
1637
1638 THREADS_LIST="
1639     pthreads
1640     os2threads
1641     w32threads
1642 "
1643
1644 ATOMICS_LIST="
1645     atomics_gcc
1646     atomics_suncc
1647     atomics_win32
1648 "
1649
1650 ARCH_LIST="
1651     aarch64
1652     alpha
1653     arm
1654     avr32
1655     avr32_ap
1656     avr32_uc
1657     bfin
1658     ia64
1659     m68k
1660     mips
1661     mips64
1662     parisc
1663     ppc
1664     ppc64
1665     s390
1666     sh4
1667     sparc
1668     sparc64
1669     tilegx
1670     tilepro
1671     tomi
1672     x86
1673     x86_32
1674     x86_64
1675 "
1676
1677 ARCH_EXT_LIST_ARM="
1678     armv5te
1679     armv6
1680     armv6t2
1681     armv8
1682     neon
1683     vfp
1684     vfpv3
1685     setend
1686 "
1687
1688 ARCH_EXT_LIST_MIPS="
1689     mipsfpu
1690     mips32r2
1691     mips32r5
1692     mips64r2
1693     mips32r6
1694     mips64r6
1695     mipsdsp
1696     mipsdspr2
1697     msa
1698 "
1699
1700 ARCH_EXT_LIST_LOONGSON="
1701     loongson2
1702     loongson3
1703     mmi
1704 "
1705
1706 ARCH_EXT_LIST_X86_SIMD="
1707     aesni
1708     amd3dnow
1709     amd3dnowext
1710     avx
1711     avx2
1712     fma3
1713     fma4
1714     mmx
1715     mmxext
1716     sse
1717     sse2
1718     sse3
1719     sse4
1720     sse42
1721     ssse3
1722     xop
1723 "
1724
1725 ARCH_EXT_LIST_PPC="
1726     altivec
1727     dcbzl
1728     ldbrx
1729     power8
1730     ppc4xx
1731     vsx
1732 "
1733
1734 ARCH_EXT_LIST_X86="
1735     $ARCH_EXT_LIST_X86_SIMD
1736     cpunop
1737     i686
1738 "
1739
1740 ARCH_EXT_LIST="
1741     $ARCH_EXT_LIST_ARM
1742     $ARCH_EXT_LIST_PPC
1743     $ARCH_EXT_LIST_X86
1744     $ARCH_EXT_LIST_MIPS
1745     $ARCH_EXT_LIST_LOONGSON
1746 "
1747
1748 ARCH_FEATURES="
1749     aligned_stack
1750     fast_64bit
1751     fast_clz
1752     fast_cmov
1753     local_aligned_8
1754     local_aligned_16
1755     local_aligned_32
1756     simd_align_16
1757 "
1758
1759 BUILTIN_LIST="
1760     atomic_cas_ptr
1761     atomic_compare_exchange
1762     machine_rw_barrier
1763     MemoryBarrier
1764     mm_empty
1765     rdtsc
1766     sarestart
1767     sem_timedwait
1768     sync_val_compare_and_swap
1769 "
1770 HAVE_LIST_CMDLINE="
1771     inline_asm
1772     symver
1773     yasm
1774 "
1775
1776 HAVE_LIST_PUB="
1777     bigendian
1778     fast_unaligned
1779     incompatible_libav_abi
1780 "
1781
1782 HEADERS_LIST="
1783     alsa_asoundlib_h
1784     altivec_h
1785     arpa_inet_h
1786     asm_types_h
1787     cdio_paranoia_h
1788     cdio_paranoia_paranoia_h
1789     dispatch_dispatch_h
1790     dev_bktr_ioctl_bt848_h
1791     dev_bktr_ioctl_meteor_h
1792     dev_ic_bt8xx_h
1793     dev_video_bktr_ioctl_bt848_h
1794     dev_video_meteor_ioctl_meteor_h
1795     direct_h
1796     dirent_h
1797     dlfcn_h
1798     d3d11_h
1799     dxva_h
1800     ES2_gl_h
1801     gsm_h
1802     io_h
1803     mach_mach_time_h
1804     machine_ioctl_bt848_h
1805     machine_ioctl_meteor_h
1806     malloc_h
1807     opencv2_core_core_c_h
1808     openjpeg_2_1_openjpeg_h
1809     openjpeg_2_0_openjpeg_h
1810     openjpeg_1_5_openjpeg_h
1811     OpenGL_gl3_h
1812     poll_h
1813     sndio_h
1814     soundcard_h
1815     sys_mman_h
1816     sys_param_h
1817     sys_resource_h
1818     sys_select_h
1819     sys_soundcard_h
1820     sys_time_h
1821     sys_un_h
1822     sys_videoio_h
1823     termios_h
1824     udplite_h
1825     unistd_h
1826     valgrind_valgrind_h
1827     windows_h
1828     winsock2_h
1829 "
1830
1831 INTRINSICS_LIST="
1832     intrinsics_neon
1833 "
1834
1835 COMPLEX_FUNCS="
1836     cabs
1837     cexp
1838 "
1839
1840 MATH_FUNCS="
1841     atanf
1842     atan2f
1843     cbrt
1844     cbrtf
1845     copysign
1846     cosf
1847     erf
1848     exp2
1849     exp2f
1850     expf
1851     hypot
1852     isfinite
1853     isinf
1854     isnan
1855     ldexpf
1856     llrint
1857     llrintf
1858     log2
1859     log2f
1860     log10f
1861     lrint
1862     lrintf
1863     powf
1864     rint
1865     round
1866     roundf
1867     sinf
1868     trunc
1869     truncf
1870 "
1871
1872 SYSTEM_FUNCS="
1873     access
1874     aligned_malloc
1875     arc4random
1876     clock_gettime
1877     closesocket
1878     CommandLineToArgvW
1879     CoTaskMemFree
1880     CryptGenRandom
1881     dlopen
1882     fcntl
1883     flt_lim
1884     fork
1885     getaddrinfo
1886     gethrtime
1887     getopt
1888     GetProcessAffinityMask
1889     GetProcessMemoryInfo
1890     GetProcessTimes
1891     getrusage
1892     GetSystemTimeAsFileTime
1893     gettimeofday
1894     glob
1895     glXGetProcAddress
1896     gmtime_r
1897     inet_aton
1898     isatty
1899     jack_port_get_latency_range
1900     kbhit
1901     localtime_r
1902     lstat
1903     lzo1x_999_compress
1904     mach_absolute_time
1905     MapViewOfFile
1906     memalign
1907     mkstemp
1908     mmap
1909     mprotect
1910     nanosleep
1911     PeekNamedPipe
1912     posix_memalign
1913     pthread_cancel
1914     sched_getaffinity
1915     SetConsoleTextAttribute
1916     SetConsoleCtrlHandler
1917     setmode
1918     setrlimit
1919     Sleep
1920     strerror_r
1921     sysconf
1922     sysctl
1923     usleep
1924     UTGetOSTypeFromString
1925     VirtualAlloc
1926     wglGetProcAddress
1927 "
1928
1929 TOOLCHAIN_FEATURES="
1930     as_dn_directive
1931     as_func
1932     as_object_arch
1933     asm_mod_q
1934     attribute_may_alias
1935     attribute_packed
1936     ebp_available
1937     ebx_available
1938     gnu_as
1939     gnu_windres
1940     ibm_asm
1941     inline_asm_direct_symbol_refs
1942     inline_asm_labels
1943     inline_asm_nonlocal_labels
1944     pragma_deprecated
1945     rsync_contimeout
1946     symver_asm_label
1947     symver_gnu_asm
1948     vfp_args
1949     xform_asm
1950     xmm_clobbers
1951 "
1952
1953 TYPES_LIST="
1954     CONDITION_VARIABLE_Ptr
1955     socklen_t
1956     struct_addrinfo
1957     struct_group_source_req
1958     struct_ip_mreq_source
1959     struct_ipv6_mreq
1960     struct_msghdr_msg_flags
1961     struct_pollfd
1962     struct_rusage_ru_maxrss
1963     struct_sctp_event_subscribe
1964     struct_sockaddr_in6
1965     struct_sockaddr_sa_len
1966     struct_sockaddr_storage
1967     struct_stat_st_mtim_tv_nsec
1968     struct_v4l2_frmivalenum_discrete
1969 "
1970
1971 HAVE_LIST="
1972     $ARCH_EXT_LIST
1973     $(add_suffix _external $ARCH_EXT_LIST)
1974     $(add_suffix _inline   $ARCH_EXT_LIST)
1975     $ARCH_FEATURES
1976     $ATOMICS_LIST
1977     $BUILTIN_LIST
1978     $COMPLEX_FUNCS
1979     $HAVE_LIST_CMDLINE
1980     $HAVE_LIST_PUB
1981     $HEADERS_LIST
1982     $INTRINSICS_LIST
1983     $MATH_FUNCS
1984     $SYSTEM_FUNCS
1985     $THREADS_LIST
1986     $TOOLCHAIN_FEATURES
1987     $TYPES_LIST
1988     atomics_native
1989     dos_paths
1990     dxva2_lib
1991     dxva2api_cobj
1992     libc_msvcrt
1993     libdc1394_1
1994     libdc1394_2
1995     makeinfo
1996     makeinfo_html
1997     perl
1998     pod2man
1999     sdl
2000     section_data_rel_ro
2001     texi2html
2002     threads
2003     vaapi_x11
2004     vdpau_x11
2005     winrt
2006     xlib
2007 "
2008
2009 # options emitted with CONFIG_ prefix but not available on the command line
2010 CONFIG_EXTRA="
2011     aandcttables
2012     ac3dsp
2013     audio_frame_queue
2014     audiodsp
2015     blockdsp
2016     bswapdsp
2017     cabac
2018     dirac_parse
2019     dvprofile
2020     exif
2021     faandct
2022     faanidct
2023     fdctdsp
2024     flacdsp
2025     fmtconvert
2026     frame_thread_encoder
2027     g722dsp
2028     golomb
2029     gplv3
2030     h263dsp
2031     h264chroma
2032     h264dsp
2033     h264pred
2034     h264qpel
2035     hpeldsp
2036     huffman
2037     huffyuvdsp
2038     huffyuvencdsp
2039     idctdsp
2040     iirfilter
2041     imdct15
2042     intrax8
2043     iso_media
2044     ividsp
2045     jpegtables
2046     lgplv3
2047     libx262
2048     llauddsp
2049     llviddsp
2050     lpc
2051     lzf
2052     me_cmp
2053     mpeg_er
2054     mpegaudio
2055     mpegaudiodsp
2056     mpegvideo
2057     mpegvideoenc
2058     mss34dsp
2059     pixblockdsp
2060     qpeldsp
2061     qsv
2062     qsvdec
2063     qsvenc
2064     rangecoder
2065     riffdec
2066     riffenc
2067     rtpdec
2068     rtpenc_chain
2069     rv34dsp
2070     sinewin
2071     snappy
2072     srtp
2073     startcode
2074     texturedsp
2075     texturedspenc
2076     tpeldsp
2077     vc1dsp
2078     videodsp
2079     vp3dsp
2080     vp56dsp
2081     vp8dsp
2082     vt_bt2020
2083     wma_freqs
2084     wmv2dsp
2085 "
2086
2087 CMDLINE_SELECT="
2088     $ARCH_EXT_LIST
2089     $CONFIG_LIST
2090     $HAVE_LIST_CMDLINE
2091     $THREADS_LIST
2092     asm
2093     cross_compile
2094     debug
2095     extra_warnings
2096     logging
2097     lto
2098     optimizations
2099     rpath
2100     stripping
2101 "
2102
2103 PATHS_LIST="
2104     bindir
2105     datadir
2106     docdir
2107     incdir
2108     libdir
2109     mandir
2110     pkgconfigdir
2111     prefix
2112     shlibdir
2113     install_name_dir
2114 "
2115
2116 CMDLINE_SET="
2117     $PATHS_LIST
2118     ar
2119     arch
2120     as
2121     assert_level
2122     build_suffix
2123     cc
2124     objcc
2125     cpu
2126     cross_prefix
2127     custom_allocator
2128     cxx
2129     dep_cc
2130     doxygen
2131     env
2132     extra_version
2133     gas
2134     host_cc
2135     host_cflags
2136     host_ld
2137     host_ldflags
2138     host_libs
2139     host_os
2140     install
2141     ld
2142     ln_s
2143     logfile
2144     malloc_prefix
2145     nm
2146     optflags
2147     pkg_config
2148     pkg_config_flags
2149     progs_suffix
2150     random_seed
2151     ranlib
2152     samples
2153     strip
2154     sws_max_filter_size
2155     sysinclude
2156     sysroot
2157     target_exec
2158     target_os
2159     target_path
2160     target_samples
2161     tempprefix
2162     toolchain
2163     valgrind
2164     yasmexe
2165 "
2166
2167 CMDLINE_APPEND="
2168     extra_cflags
2169     extra_cxxflags
2170     extra_objcflags
2171     host_cppflags
2172 "
2173
2174 # code dependency declarations
2175
2176 # architecture extensions
2177
2178 armv5te_deps="arm"
2179 armv6_deps="arm"
2180 armv6t2_deps="arm"
2181 armv8_deps="aarch64"
2182 neon_deps_any="aarch64 arm"
2183 intrinsics_neon_deps="neon"
2184 vfp_deps_any="aarch64 arm"
2185 vfpv3_deps="vfp"
2186 setend_deps="arm"
2187
2188 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2189
2190 mipsfpu_deps="mips"
2191 mipsdsp_deps="mips"
2192 mipsdspr2_deps="mips"
2193 mips32r2_deps="mips"
2194 mips32r5_deps="mips"
2195 mips32r6_deps="mips"
2196 mips64r2_deps="mips"
2197 mips64r6_deps="mips"
2198 msa_deps="mipsfpu"
2199 mmi_deps="mips"
2200
2201 altivec_deps="ppc"
2202 dcbzl_deps="ppc"
2203 ldbrx_deps="ppc"
2204 ppc4xx_deps="ppc"
2205 vsx_deps="altivec"
2206 power8_deps="vsx"
2207
2208 cpunop_deps="i686"
2209 x86_64_select="i686"
2210 x86_64_suggest="fast_cmov"
2211
2212 amd3dnow_deps="mmx"
2213 amd3dnowext_deps="amd3dnow"
2214 i686_deps="x86"
2215 mmx_deps="x86"
2216 mmxext_deps="mmx"
2217 sse_deps="mmxext"
2218 sse2_deps="sse"
2219 sse3_deps="sse2"
2220 ssse3_deps="sse3"
2221 sse4_deps="ssse3"
2222 sse42_deps="sse4"
2223 aesni_deps="sse42"
2224 avx_deps="sse42"
2225 xop_deps="avx"
2226 fma3_deps="avx"
2227 fma4_deps="avx"
2228 avx2_deps="avx"
2229
2230 mmx_external_deps="yasm"
2231 mmx_inline_deps="inline_asm"
2232 mmx_suggest="mmx_external mmx_inline"
2233
2234 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2235     eval dep=\$${ext}_deps
2236     eval ${ext}_external_deps='"${dep}_external"'
2237     eval ${ext}_inline_deps='"${dep}_inline"'
2238     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2239 done
2240
2241 aligned_stack_if_any="aarch64 ppc x86"
2242 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2243 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2244 fast_unaligned_if_any="aarch64 ppc x86"
2245 simd_align_16_if_any="altivec neon sse"
2246
2247 # system capabilities
2248 symver_if_any="symver_asm_label symver_gnu_asm"
2249 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2250
2251 # threading support
2252 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2253 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2254 atomics_win32_if="MemoryBarrier"
2255 atomics_native_if_any="$ATOMICS_LIST"
2256 w32threads_deps="atomics_native"
2257 threads_if_any="$THREADS_LIST"
2258
2259 # subsystems
2260 dct_select="rdft"
2261 dirac_parse_select="golomb"
2262 error_resilience_select="me_cmp"
2263 faandct_deps="faan fdctdsp"
2264 faanidct_deps="faan idctdsp"
2265 h264dsp_select="startcode"
2266 frame_thread_encoder_deps="encoders threads"
2267 intrax8_select="blockdsp idctdsp"
2268 mdct_select="fft"
2269 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2270 mpeg_er_select="error_resilience"
2271 mpegaudio_select="mpegaudiodsp"
2272 mpegaudiodsp_select="dct"
2273 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2274 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2275 qsvdec_select="qsv"
2276 qsvenc_select="qsv"
2277 vc1dsp_select="h264chroma qpeldsp startcode"
2278 rdft_select="fft"
2279
2280 # decoders / encoders
2281 aac_decoder_select="imdct15 mdct sinewin"
2282 aac_fixed_decoder_select="mdct sinewin"
2283 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2284 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2285 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2286 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2287 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2288 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2289 adpcm_g722_decoder_select="g722dsp"
2290 adpcm_g722_encoder_select="g722dsp"
2291 aic_decoder_select="golomb idctdsp"
2292 alac_encoder_select="lpc"
2293 als_decoder_select="bswapdsp"
2294 amrnb_decoder_select="lsp"
2295 amrwb_decoder_select="lsp"
2296 amv_decoder_select="sp5x_decoder exif"
2297 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2298 ape_decoder_select="bswapdsp llauddsp"
2299 apng_decoder_select="zlib"
2300 apng_encoder_select="huffyuvencdsp zlib"
2301 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2302 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2303 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2304 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2305 atrac1_decoder_select="mdct sinewin"
2306 atrac3_decoder_select="mdct"
2307 atrac3p_decoder_select="mdct sinewin"
2308 avrn_decoder_select="exif jpegtables"
2309 bink_decoder_select="blockdsp hpeldsp"
2310 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2311 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2312 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2313 cllc_decoder_select="bswapdsp"
2314 comfortnoise_encoder_select="lpc"
2315 cook_decoder_select="audiodsp mdct sinewin"
2316 cscd_decoder_select="lzo"
2317 cscd_decoder_suggest="zlib"
2318 dca_decoder_select="mdct"
2319 dds_decoder_select="texturedsp"
2320 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2321 dnxhd_decoder_select="blockdsp idctdsp"
2322 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2323 dvvideo_decoder_select="dvprofile idctdsp"
2324 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2325 dxa_decoder_select="zlib"
2326 dxv_decoder_select="lzf texturedsp"
2327 eac3_decoder_select="ac3_decoder"
2328 eac3_encoder_select="ac3_encoder"
2329 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2330 eatgq_decoder_select="aandcttables"
2331 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2332 exr_decoder_select="zlib"
2333 ffv1_decoder_select="golomb rangecoder"
2334 ffv1_encoder_select="rangecoder"
2335 ffvhuff_decoder_select="huffyuv_decoder"
2336 ffvhuff_encoder_select="huffyuv_encoder"
2337 fic_decoder_select="golomb"
2338 flac_decoder_select="flacdsp golomb"
2339 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2340 flashsv2_decoder_select="zlib"
2341 flashsv2_encoder_select="zlib"
2342 flashsv_decoder_select="zlib"
2343 flashsv_encoder_select="zlib"
2344 flv_decoder_select="h263_decoder"
2345 flv_encoder_select="h263_encoder"
2346 fourxm_decoder_select="blockdsp bswapdsp"
2347 fraps_decoder_select="bswapdsp huffman"
2348 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2349 g729_decoder_select="audiodsp"
2350 h261_decoder_select="mpegvideo"
2351 h261_encoder_select="aandcttables mpegvideoenc"
2352 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2353 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2354 h263i_decoder_select="h263_decoder"
2355 h263p_decoder_select="h263_decoder"
2356 h263p_encoder_select="h263_encoder"
2357 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2358 h264_decoder_suggest="error_resilience"
2359 h264_qsv_decoder_deps="libmfx"
2360 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2361 h264_qsv_encoder_deps="libmfx"
2362 h264_qsv_encoder_select="qsvenc"
2363 hap_decoder_select="snappy texturedsp"
2364 hap_encoder_deps="libsnappy"
2365 hap_encoder_select="texturedspenc"
2366 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2367 hevc_qsv_decoder_deps="libmfx"
2368 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2369 hevc_qsv_encoder_deps="libmfx"
2370 hevc_qsv_encoder_select="qsvenc"
2371 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2372 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2373 iac_decoder_select="imc_decoder"
2374 imc_decoder_select="bswapdsp fft mdct sinewin"
2375 indeo3_decoder_select="hpeldsp"
2376 indeo4_decoder_select="ividsp"
2377 indeo5_decoder_select="ividsp"
2378 interplay_video_decoder_select="hpeldsp"
2379 jpegls_decoder_select="golomb mjpeg_decoder"
2380 jpegls_encoder_select="golomb"
2381 jv_decoder_select="blockdsp"
2382 lagarith_decoder_select="huffyuvdsp"
2383 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2384 loco_decoder_select="golomb"
2385 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2386 metasound_decoder_select="lsp mdct sinewin"
2387 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2388 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2389 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2390 mjpegb_decoder_select="mjpeg_decoder"
2391 mlp_decoder_select="mlp_parser"
2392 motionpixels_decoder_select="bswapdsp"
2393 mp1_decoder_select="mpegaudio"
2394 mp1float_decoder_select="mpegaudio"
2395 mp2_decoder_select="mpegaudio"
2396 mp2float_decoder_select="mpegaudio"
2397 mp3_decoder_select="mpegaudio"
2398 mp3adu_decoder_select="mpegaudio"
2399 mp3adufloat_decoder_select="mpegaudio"
2400 mp3float_decoder_select="mpegaudio"
2401 mp3on4_decoder_select="mpegaudio"
2402 mp3on4float_decoder_select="mpegaudio"
2403 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2404 mpc8_decoder_select="mpegaudiodsp"
2405 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2406 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2407 mpegvideo_decoder_select="mpegvideo"
2408 mpeg1video_decoder_select="mpegvideo"
2409 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2410 mpeg2video_decoder_select="mpegvideo"
2411 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2412 mpeg2_qsv_decoder_deps="libmfx"
2413 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2414 mpeg2_qsv_encoder_deps="libmfx"
2415 mpeg2_qsv_encoder_select="qsvenc"
2416 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2417 mpeg4_encoder_select="h263_encoder"
2418 msa1_decoder_select="mss34dsp"
2419 msmpeg4v1_decoder_select="h263_decoder"
2420 msmpeg4v2_decoder_select="h263_decoder"
2421 msmpeg4v2_encoder_select="h263_encoder"
2422 msmpeg4v3_decoder_select="h263_decoder"
2423 msmpeg4v3_encoder_select="h263_encoder"
2424 mss2_decoder_select="vc1_decoder mpegvideo"
2425 mts2_decoder_select="mss34dsp"
2426 mxpeg_decoder_select="mjpeg_decoder"
2427 nellymoser_decoder_select="mdct sinewin"
2428 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2429 nuv_decoder_select="idctdsp lzo"
2430 on2avc_decoder_select="mdct"
2431 opus_decoder_deps="swresample"
2432 opus_decoder_select="imdct15"
2433 png_decoder_select="zlib"
2434 png_encoder_select="huffyuvencdsp zlib"
2435 prores_decoder_select="blockdsp idctdsp"
2436 prores_encoder_select="fdctdsp"
2437 qcelp_decoder_select="lsp"
2438 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2439 ra_144_decoder_select="audiodsp"
2440 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2441 ralf_decoder_select="golomb"
2442 rawvideo_decoder_select="bswapdsp"
2443 rscc_decoder_select="zlib"
2444 rtjpeg_decoder_select="me_cmp"
2445 rv10_decoder_select="h263_decoder"
2446 rv10_encoder_select="h263_encoder"
2447 rv20_decoder_select="h263_decoder"
2448 rv20_encoder_select="h263_encoder"
2449 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2450 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2451 screenpresso_decoder_select="zlib"
2452 shorten_decoder_select="golomb"
2453 sipr_decoder_select="lsp"
2454 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2455 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2456 sonic_decoder_select="golomb rangecoder"
2457 sonic_encoder_select="golomb rangecoder"
2458 sonic_ls_encoder_select="golomb rangecoder"
2459 sp5x_decoder_select="mjpeg_decoder"
2460 svq1_decoder_select="hpeldsp"
2461 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2462 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2463 svq3_decoder_suggest="zlib"
2464 tak_decoder_select="audiodsp"
2465 tdsc_decoder_select="zlib mjpeg_decoder"
2466 theora_decoder_select="vp3_decoder"
2467 thp_decoder_select="mjpeg_decoder"
2468 tiff_decoder_suggest="zlib lzma"
2469 tiff_encoder_suggest="zlib"
2470 truehd_decoder_select="mlp_parser"
2471 truemotion2_decoder_select="bswapdsp"
2472 truespeech_decoder_select="bswapdsp"
2473 tscc_decoder_select="zlib"
2474 twinvq_decoder_select="mdct lsp sinewin"
2475 txd_decoder_select="texturedsp"
2476 utvideo_decoder_select="bswapdsp"
2477 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2478 vble_decoder_select="huffyuvdsp"
2479 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2480 vc1_qsv_decoder_deps="libmfx"
2481 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2482 vc1image_decoder_select="vc1_decoder"
2483 vorbis_decoder_select="mdct"
2484 vorbis_encoder_select="mdct"
2485 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2486 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2487 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2488 vp6a_decoder_select="vp6_decoder"
2489 vp6f_decoder_select="vp6_decoder"
2490 vp7_decoder_select="h264pred videodsp vp8dsp"
2491 vp8_decoder_select="h264pred videodsp vp8dsp"
2492 vp9_decoder_select="videodsp vp9_parser"
2493 webp_decoder_select="vp8_decoder exif"
2494 wmalossless_decoder_select="llauddsp"
2495 wmapro_decoder_select="mdct sinewin wma_freqs"
2496 wmav1_decoder_select="mdct sinewin wma_freqs"
2497 wmav1_encoder_select="mdct sinewin wma_freqs"
2498 wmav2_decoder_select="mdct sinewin wma_freqs"
2499 wmav2_encoder_select="mdct sinewin wma_freqs"
2500 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2501 wmv1_decoder_select="h263_decoder"
2502 wmv1_encoder_select="h263_encoder"
2503 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2504 wmv2_encoder_select="h263_encoder wmv2dsp"
2505 wmv3_decoder_select="vc1_decoder"
2506 wmv3image_decoder_select="wmv3_decoder"
2507 xma1_decoder_select="wmapro_decoder"
2508 xma2_decoder_select="wmapro_decoder"
2509 zerocodec_decoder_select="zlib"
2510 zlib_decoder_select="zlib"
2511 zlib_encoder_select="zlib"
2512 zmbv_decoder_select="zlib"
2513 zmbv_encoder_select="zlib"
2514
2515 # platform codecs
2516 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2517 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2518
2519 # hardware accelerators
2520 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2521 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2522 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2523 vaapi_deps="va_va_h"
2524 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2525 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2526 vda_deps="vda_framework pthreads"
2527 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2528 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2529 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2530 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2531 xvmc_deps="X11_extensions_XvMClib_h"
2532
2533 h263_vaapi_hwaccel_deps="vaapi"
2534 h263_vaapi_hwaccel_select="h263_decoder"
2535 h263_videotoolbox_hwaccel_deps="videotoolbox"
2536 h263_videotoolbox_hwaccel_select="h263_decoder"
2537 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2538 h264_d3d11va_hwaccel_deps="d3d11va"
2539 h264_d3d11va_hwaccel_select="h264_decoder"
2540 h264_dxva2_hwaccel_deps="dxva2"
2541 h264_dxva2_hwaccel_select="h264_decoder"
2542 h264_mediacodec_decoder_deps="mediacodec"
2543 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2544 h264_mmal_decoder_deps="mmal"
2545 h264_mmal_decoder_select="mmal"
2546 h264_mmal_hwaccel_deps="mmal"
2547 h264_qsv_hwaccel_deps="libmfx"
2548 h264_vaapi_hwaccel_deps="vaapi"
2549 h264_vaapi_hwaccel_select="h264_decoder"
2550 h264_vda_decoder_deps="vda"
2551 h264_vda_decoder_select="h264_decoder"
2552 h264_vda_hwaccel_deps="vda"
2553 h264_vda_hwaccel_select="h264_decoder"
2554 h264_vda_old_hwaccel_deps="vda"
2555 h264_vda_old_hwaccel_select="h264_decoder"
2556 h264_vdpau_decoder_deps="vdpau"
2557 h264_vdpau_decoder_select="h264_decoder"
2558 h264_vdpau_hwaccel_deps="vdpau"
2559 h264_vdpau_hwaccel_select="h264_decoder"
2560 h264_videotoolbox_hwaccel_deps="videotoolbox"
2561 h264_videotoolbox_hwaccel_select="h264_decoder"
2562 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2563 hevc_d3d11va_hwaccel_select="hevc_decoder"
2564 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2565 hevc_dxva2_hwaccel_select="hevc_decoder"
2566 hevc_qsv_hwaccel_deps="libmfx"
2567 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2568 hevc_vaapi_hwaccel_select="hevc_decoder"
2569 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2570 hevc_vdpau_hwaccel_select="hevc_decoder"
2571 mpeg_vdpau_decoder_deps="vdpau"
2572 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2573 mpeg_xvmc_hwaccel_deps="xvmc"
2574 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2575 mpeg1_vdpau_decoder_deps="vdpau"
2576 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2577 mpeg1_vdpau_hwaccel_deps="vdpau"
2578 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2579 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2580 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2581 mpeg1_xvmc_hwaccel_deps="xvmc"
2582 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2583 mpeg2_crystalhd_decoder_select="crystalhd"
2584 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2585 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2586 mpeg2_dxva2_hwaccel_deps="dxva2"
2587 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2588 mpeg2_mmal_decoder_deps="mmal"
2589 mpeg2_mmal_decoder_select="mmal"
2590 mpeg2_mmal_hwaccel_deps="mmal"
2591 mpeg2_qsv_hwaccel_deps="libmfx"
2592 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2593 mpeg2_vaapi_hwaccel_deps="vaapi"
2594 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2595 mpeg2_vdpau_hwaccel_deps="vdpau"
2596 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2597 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2598 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2599 mpeg2_xvmc_hwaccel_deps="xvmc"
2600 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2601 mpeg4_crystalhd_decoder_select="crystalhd"
2602 mpeg4_mmal_decoder_deps="mmal"
2603 mpeg4_mmal_decoder_select="mmal"
2604 mpeg4_mmal_hwaccel_deps="mmal"
2605 mpeg4_vaapi_hwaccel_deps="vaapi"
2606 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2607 mpeg4_vdpau_decoder_deps="vdpau"
2608 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2609 mpeg4_vdpau_hwaccel_deps="vdpau"
2610 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2611 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2612 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2613 msmpeg4_crystalhd_decoder_select="crystalhd"
2614 vc1_crystalhd_decoder_select="crystalhd"
2615 vc1_d3d11va_hwaccel_deps="d3d11va"
2616 vc1_d3d11va_hwaccel_select="vc1_decoder"
2617 vc1_dxva2_hwaccel_deps="dxva2"
2618 vc1_dxva2_hwaccel_select="vc1_decoder"
2619 vc1_mmal_decoder_deps="mmal"
2620 vc1_mmal_decoder_select="mmal"
2621 vc1_mmal_hwaccel_deps="mmal"
2622 vc1_qsv_hwaccel_deps="libmfx"
2623 vc1_qsv_hwaccel_select="qsvdec_vc1"
2624 vc1_vaapi_hwaccel_deps="vaapi"
2625 vc1_vaapi_hwaccel_select="vc1_decoder"
2626 vc1_vdpau_decoder_deps="vdpau"
2627 vc1_vdpau_decoder_select="vc1_decoder"
2628 vc1_vdpau_hwaccel_deps="vdpau"
2629 vc1_vdpau_hwaccel_select="vc1_decoder"
2630 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2631 vp9_d3d11va_hwaccel_select="vp9_decoder"
2632 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2633 vp9_dxva2_hwaccel_select="vp9_decoder"
2634 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2635 vp9_vaapi_hwaccel_select="vp9_decoder"
2636 wmv3_crystalhd_decoder_select="crystalhd"
2637 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2638 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2639 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2640 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2641 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2642
2643 # parsers
2644 h264_parser_select="h264_decoder"
2645 hevc_parser_select="golomb"
2646 mpegvideo_parser_select="mpegvideo"
2647 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2648 vc1_parser_select="vc1dsp"
2649
2650 # bitstream_filters
2651 mjpeg2jpeg_bsf_select="jpegtables"
2652
2653 # external libraries
2654 aac_at_decoder_deps="audiotoolbox"
2655 ac3_at_decoder_deps="audiotoolbox"
2656 ac3_at_decoder_select="ac3_parser"
2657 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2658 alac_at_decoder_deps="audiotoolbox"
2659 amr_nb_at_decoder_deps="audiotoolbox"
2660 eac3_at_decoder_deps="audiotoolbox"
2661 eac3_at_decoder_select="ac3_parser"
2662 gsm_ms_at_decoder_deps="audiotoolbox"
2663 ilbc_at_decoder_deps="audiotoolbox"
2664 mp1_at_decoder_deps="audiotoolbox"
2665 mp2_at_decoder_deps="audiotoolbox"
2666 mp3_at_decoder_deps="audiotoolbox"
2667 pcm_alaw_at_decoder_deps="audiotoolbox"
2668 pcm_mulaw_at_decoder_deps="audiotoolbox"
2669 qdmc_at_decoder_deps="audiotoolbox"
2670 qdm2_at_decoder_deps="audiotoolbox"
2671 aac_at_encoder_deps="audiotoolbox"
2672 aac_at_encoder_select="audio_frame_queue"
2673 alac_at_encoder_deps="audiotoolbox"
2674 alac_at_encoder_select="audio_frame_queue"
2675 ilbc_at_encoder_deps="audiotoolbox"
2676 ilbc_at_encoder_select="audio_frame_queue"
2677 pcm_alaw_at_encoder_deps="audiotoolbox"
2678 pcm_alaw_at_encoder_select="audio_frame_queue"
2679 pcm_mulaw_at_encoder_deps="audiotoolbox"
2680 pcm_mulaw_at_encoder_select="audio_frame_queue"
2681 chromaprint_muxer_deps="chromaprint"
2682 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2683 libcelt_decoder_deps="libcelt"
2684 libfaac_encoder_deps="libfaac"
2685 libfaac_encoder_select="audio_frame_queue"
2686 libfdk_aac_decoder_deps="libfdk_aac"
2687 libfdk_aac_encoder_deps="libfdk_aac"
2688 libfdk_aac_encoder_select="audio_frame_queue"
2689 libgme_demuxer_deps="libgme"
2690 libgsm_decoder_deps="libgsm"
2691 libgsm_encoder_deps="libgsm"
2692 libgsm_ms_decoder_deps="libgsm"
2693 libgsm_ms_encoder_deps="libgsm"
2694 libilbc_decoder_deps="libilbc"
2695 libilbc_encoder_deps="libilbc"
2696 libkvazaar_encoder_deps="libkvazaar"
2697 libmodplug_demuxer_deps="libmodplug"
2698 libmp3lame_encoder_deps="libmp3lame"
2699 libmp3lame_encoder_select="audio_frame_queue"
2700 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2701 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2702 libopencore_amrnb_encoder_select="audio_frame_queue"
2703 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2704 libopenh264_encoder_deps="libopenh264"
2705 libopenjpeg_decoder_deps="libopenjpeg"
2706 libopenjpeg_encoder_deps="libopenjpeg"
2707 libopus_decoder_deps="libopus"
2708 libopus_encoder_deps="libopus"
2709 libopus_encoder_select="audio_frame_queue"
2710 libschroedinger_decoder_deps="libschroedinger"
2711 libschroedinger_encoder_deps="libschroedinger"
2712 libshine_encoder_deps="libshine"
2713 libshine_encoder_select="audio_frame_queue"
2714 libspeex_decoder_deps="libspeex"
2715 libspeex_encoder_deps="libspeex"
2716 libspeex_encoder_select="audio_frame_queue"
2717 libtheora_encoder_deps="libtheora"
2718 libtwolame_encoder_deps="libtwolame"
2719 libutvideo_decoder_deps="libutvideo"
2720 libutvideo_encoder_deps="libutvideo"
2721 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2722 libvorbis_decoder_deps="libvorbis"
2723 libvorbis_encoder_deps="libvorbis"
2724 libvorbis_encoder_select="audio_frame_queue"
2725 libvpx_vp8_decoder_deps="libvpx"
2726 libvpx_vp8_encoder_deps="libvpx"
2727 libvpx_vp9_decoder_deps="libvpx"
2728 libvpx_vp9_encoder_deps="libvpx"
2729 libwavpack_encoder_deps="libwavpack"
2730 libwebp_encoder_deps="libwebp"
2731 libwebp_anim_encoder_deps="libwebp"
2732 libx262_encoder_deps="libx262"
2733 libx264_encoder_deps="libx264"
2734 libx264rgb_encoder_deps="libx264"
2735 libx264rgb_encoder_select="libx264_encoder"
2736 libx265_encoder_deps="libx265"
2737 libxavs_encoder_deps="libxavs"
2738 libxvid_encoder_deps="libxvid"
2739 libzvbi_teletext_decoder_deps="libzvbi"
2740 nvenc_encoder_deps="nvenc"
2741 nvenc_h264_encoder_deps="nvenc"
2742 nvenc_hevc_encoder_deps="nvenc"
2743 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2744 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2745 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2746 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2747 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2748
2749 # demuxers / muxers
2750 ac3_demuxer_select="ac3_parser"
2751 asf_demuxer_select="riffdec"
2752 asf_o_demuxer_select="riffdec"
2753 asf_muxer_select="riffenc"
2754 asf_stream_muxer_select="asf_muxer"
2755 avi_demuxer_select="iso_media riffdec exif"
2756 avi_muxer_select="riffenc"
2757 avisynth_demuxer_deps="avisynth"
2758 avisynth_demuxer_select="riffdec"
2759 caf_demuxer_select="iso_media riffdec"
2760 dash_muxer_select="mp4_muxer"
2761 dirac_demuxer_select="dirac_parser"
2762 dts_demuxer_select="dca_parser"
2763 dtshd_demuxer_select="dca_parser"
2764 dv_demuxer_select="dvprofile"
2765 dv_muxer_select="dvprofile"
2766 dxa_demuxer_select="riffdec"
2767 eac3_demuxer_select="ac3_parser"
2768 f4v_muxer_select="mov_muxer"
2769 flac_demuxer_select="flac_parser"
2770 hds_muxer_select="flv_muxer"
2771 hls_muxer_select="mpegts_muxer"
2772 image2_alias_pix_demuxer_select="image2_demuxer"
2773 image2_brender_pix_demuxer_select="image2_demuxer"
2774 ipod_muxer_select="mov_muxer"
2775 ismv_muxer_select="mov_muxer"
2776 libnut_demuxer_deps="libnut"
2777 libnut_muxer_deps="libnut"
2778 matroska_audio_muxer_select="matroska_muxer"
2779 matroska_demuxer_select="iso_media riffdec"
2780 matroska_demuxer_suggest="bzlib lzo zlib"
2781 matroska_muxer_select="iso_media riffenc"
2782 mmf_muxer_select="riffenc"
2783 mov_demuxer_select="iso_media riffdec"
2784 mov_demuxer_suggest="zlib"
2785 mov_muxer_select="iso_media riffenc rtpenc_chain"
2786 mp3_demuxer_select="mpegaudio_parser"
2787 mp4_muxer_select="mov_muxer"
2788 mpegts_demuxer_select="iso_media"
2789 mpegts_muxer_select="adts_muxer latm_muxer"
2790 mpegtsraw_demuxer_select="mpegts_demuxer"
2791 mxf_d10_muxer_select="mxf_muxer"
2792 mxf_opatom_muxer_select="mxf_muxer"
2793 nut_muxer_select="riffenc"
2794 nuv_demuxer_select="riffdec"
2795 oga_muxer_select="ogg_muxer"
2796 ogg_demuxer_select="dirac_parse"
2797 opus_muxer_select="ogg_muxer"
2798 psp_muxer_select="mov_muxer"
2799 rtp_demuxer_select="sdp_demuxer"
2800 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2801 rtsp_demuxer_select="http_protocol rtpdec"
2802 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2803 sap_demuxer_select="sdp_demuxer"
2804 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2805 sdp_demuxer_select="rtpdec"
2806 smoothstreaming_muxer_select="ismv_muxer"
2807 spdif_muxer_select="aac_parser"
2808 spx_muxer_select="ogg_muxer"
2809 swf_demuxer_suggest="zlib"
2810 tak_demuxer_select="tak_parser"
2811 tg2_muxer_select="mov_muxer"
2812 tgp_muxer_select="mov_muxer"
2813 vobsub_demuxer_select="mpegps_demuxer"
2814 w64_demuxer_select="wav_demuxer"
2815 w64_muxer_select="wav_muxer"
2816 wav_demuxer_select="riffdec"
2817 wav_muxer_select="riffenc"
2818 webm_muxer_select="iso_media riffenc"
2819 webm_dash_manifest_demuxer_select="matroska_demuxer"
2820 wtv_demuxer_select="mpegts_demuxer riffdec"
2821 wtv_muxer_select="mpegts_muxer riffenc"
2822 xmv_demuxer_select="riffdec"
2823 xwma_demuxer_select="riffdec"
2824
2825 # indevs / outdevs
2826 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2827 alsa_outdev_deps="alsa_asoundlib_h"
2828 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2829 avfoundation_indev_select="avfoundation"
2830 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2831 caca_outdev_deps="libcaca"
2832 decklink_indev_deps="decklink pthreads"
2833 decklink_indev_extralibs="-lstdc++"
2834 decklink_outdev_deps="decklink pthreads"
2835 decklink_outdev_extralibs="-lstdc++"
2836 dshow_indev_deps="IBaseFilter"
2837 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2838 dv1394_indev_deps="dv1394"
2839 dv1394_indev_select="dv_demuxer"
2840 fbdev_indev_deps="linux_fb_h"
2841 fbdev_outdev_deps="linux_fb_h"
2842 gdigrab_indev_deps="CreateDIBSection"
2843 gdigrab_indev_extralibs="-lgdi32"
2844 gdigrab_indev_select="bmp_decoder"
2845 iec61883_indev_deps="libiec61883"
2846 jack_indev_deps="jack_jack_h"
2847 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2848 lavfi_indev_deps="avfilter"
2849 libcdio_indev_deps="libcdio"
2850 libdc1394_indev_deps="libdc1394"
2851 libv4l2_indev_deps="libv4l2"
2852 openal_indev_deps="openal"
2853 opengl_outdev_deps="opengl"
2854 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2855 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2856 pulse_indev_deps="libpulse"
2857 pulse_outdev_deps="libpulse"
2858 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2859 qtkit_indev_select="qtkit"
2860 sdl_outdev_deps="sdl"
2861 sndio_indev_deps="sndio_h"
2862 sndio_outdev_deps="sndio_h"
2863 v4l_indev_deps="linux_videodev_h"
2864 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2865 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2866 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2867 vfwcap_indev_extralibs="-lavicap32"
2868 x11grab_indev_deps="x11grab"
2869 x11grab_xcb_indev_deps="libxcb"
2870 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2871 xv_outdev_extralibs="-lXv -lX11 -lXext"
2872
2873 # protocols
2874 async_protocol_deps="threads"
2875 bluray_protocol_deps="libbluray"
2876 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2877 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2878 ffrtmpcrypt_protocol_select="tcp_protocol"
2879 ffrtmphttp_protocol_deps="!librtmp_protocol"
2880 ffrtmphttp_protocol_select="http_protocol"
2881 ftp_protocol_select="tcp_protocol"
2882 gopher_protocol_select="network"
2883 http_protocol_select="tcp_protocol"
2884 httpproxy_protocol_select="tcp_protocol"
2885 https_protocol_select="tls_protocol"
2886 icecast_protocol_select="http_protocol"
2887 librtmp_protocol_deps="librtmp"
2888 librtmpe_protocol_deps="librtmp"
2889 librtmps_protocol_deps="librtmp"
2890 librtmpt_protocol_deps="librtmp"
2891 librtmpte_protocol_deps="librtmp"
2892 libsmbclient_protocol_deps="libsmbclient gplv3"
2893 libssh_protocol_deps="libssh"
2894 mmsh_protocol_select="http_protocol"
2895 mmst_protocol_select="network"
2896 rtmp_protocol_deps="!librtmp_protocol"
2897 rtmp_protocol_select="tcp_protocol"
2898 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2899 rtmps_protocol_deps="!librtmp_protocol"
2900 rtmps_protocol_select="tls_protocol"
2901 rtmpt_protocol_select="ffrtmphttp_protocol"
2902 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2903 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2904 rtp_protocol_select="udp_protocol"
2905 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2906 sctp_protocol_select="network"
2907 srtp_protocol_select="rtp_protocol srtp"
2908 tcp_protocol_select="network"
2909 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2910 tls_gnutls_protocol_select="tcp_protocol"
2911 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2912 tls_openssl_protocol_select="tcp_protocol"
2913 tls_schannel_protocol_deps="schannel"
2914 tls_schannel_protocol_select="tcp_protocol"
2915 tls_securetransport_protocol_deps="securetransport"
2916 tls_securetransport_protocol_select="tcp_protocol"
2917 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2918 udp_protocol_select="network"
2919 udplite_protocol_select="network"
2920 unix_protocol_deps="sys_un_h"
2921 unix_protocol_select="network"
2922
2923 # filters
2924 afftfilt_filter_deps="avcodec"
2925 afftfilt_filter_select="fft"
2926 amovie_filter_deps="avcodec avformat"
2927 aresample_filter_deps="swresample"
2928 ass_filter_deps="libass"
2929 asyncts_filter_deps="avresample"
2930 atempo_filter_deps="avcodec"
2931 atempo_filter_select="rdft"
2932 azmq_filter_deps="libzmq"
2933 blackframe_filter_deps="gpl"
2934 boxblur_filter_deps="gpl"
2935 bs2b_filter_deps="libbs2b"
2936 colormatrix_filter_deps="gpl"
2937 cover_rect_filter_deps="avcodec avformat gpl"
2938 cropdetect_filter_deps="gpl"
2939 delogo_filter_deps="gpl"
2940 deshake_filter_select="pixelutils"
2941 drawtext_filter_deps="libfreetype"
2942 ebur128_filter_deps="gpl"
2943 eq_filter_deps="gpl"
2944 fftfilt_filter_deps="avcodec"
2945 fftfilt_filter_select="rdft"
2946 find_rect_filter_deps="avcodec avformat gpl"
2947 firequalizer_filter_deps="avcodec"
2948 firequalizer_filter_select="rdft"
2949 flite_filter_deps="libflite"
2950 framerate_filter_select="pixelutils"
2951 frei0r_filter_deps="frei0r dlopen"
2952 frei0r_src_filter_deps="frei0r dlopen"
2953 fspp_filter_deps="gpl"
2954 geq_filter_deps="gpl"
2955 histeq_filter_deps="gpl"
2956 hqdn3d_filter_deps="gpl"
2957 hwupload_cuda_filter_deps="cuda"
2958 interlace_filter_deps="gpl"
2959 kerndeint_filter_deps="gpl"
2960 ladspa_filter_deps="ladspa dlopen"
2961 mcdeint_filter_deps="avcodec gpl"
2962 movie_filter_deps="avcodec avformat"
2963 mpdecimate_filter_deps="gpl"
2964 mpdecimate_filter_select="pixelutils"
2965 mptestsrc_filter_deps="gpl"
2966 negate_filter_deps="lut_filter"
2967 nnedi_filter_deps="gpl"
2968 ocr_filter_deps="libtesseract"
2969 ocv_filter_deps="libopencv"
2970 owdenoise_filter_deps="gpl"
2971 pan_filter_deps="swresample"
2972 perspective_filter_deps="gpl"
2973 phase_filter_deps="gpl"
2974 pp7_filter_deps="gpl"
2975 pp_filter_deps="gpl postproc"
2976 pullup_filter_deps="gpl"
2977 removelogo_filter_deps="avcodec avformat swscale"
2978 repeatfields_filter_deps="gpl"
2979 resample_filter_deps="avresample"
2980 rubberband_filter_deps="librubberband"
2981 sab_filter_deps="gpl swscale"
2982 scale2ref_filter_deps="swscale"
2983 scale_filter_deps="swscale"
2984 select_filter_select="pixelutils"
2985 showcqt_filter_deps="avcodec avformat swscale"
2986 showcqt_filter_select="fft"
2987 showfreqs_filter_deps="avcodec"
2988 showfreqs_filter_select="fft"
2989 showspectrum_filter_deps="avcodec"
2990 showspectrum_filter_select="fft"
2991 showspectrumpic_filter_deps="avcodec"
2992 showspectrumpic_filter_select="fft"
2993 smartblur_filter_deps="gpl swscale"
2994 sofalizer_filter_deps="netcdf avcodec"
2995 sofalizer_filter_select="fft"
2996 spectrumsynth_filter_deps="avcodec"
2997 spectrumsynth_filter_select="fft"
2998 spp_filter_deps="gpl avcodec"
2999 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3000 stereo3d_filter_deps="gpl"
3001 subtitles_filter_deps="avformat avcodec libass"
3002 super2xsai_filter_deps="gpl"
3003 pixfmts_super2xsai_test_deps="super2xsai_filter"
3004 tinterlace_filter_deps="gpl"
3005 tinterlace_merge_test_deps="tinterlace_filter"
3006 tinterlace_pad_test_deps="tinterlace_filter"
3007 uspp_filter_deps="gpl avcodec"
3008 vidstabdetect_filter_deps="libvidstab"
3009 vidstabtransform_filter_deps="libvidstab"
3010 zmq_filter_deps="libzmq"
3011 zoompan_filter_deps="swscale"
3012 zscale_filter_deps="libzimg"
3013 scale_npp_filter_deps="cuda libnpp"
3014 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3015
3016 # examples
3017 avcodec_example_deps="avcodec avutil"
3018 avio_dir_cmd="avformat avutil"
3019 avio_reading="avformat avcodec avutil"
3020 decoding_encoding_example_deps="avcodec avformat avutil"
3021 demuxing_decoding_example_deps="avcodec avformat avutil"
3022 extract_mvs_example_deps="avcodec avformat avutil"
3023 filter_audio_example_deps="avfilter avutil"
3024 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3025 filtering_video_example_deps="avfilter avcodec avformat avutil"
3026 metadata_example_deps="avformat avutil"
3027 muxing_example_deps="avcodec avformat avutil swscale"
3028 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3029 remuxing_example_deps="avcodec avformat avutil"
3030 resampling_audio_example_deps="avutil swresample"
3031 scaling_video_example_deps="avutil swscale"
3032 transcode_aac_example_deps="avcodec avformat swresample"
3033 transcoding_example_deps="avfilter avcodec avformat avutil"
3034
3035 # libraries, in linking order
3036 avcodec_deps="avutil"
3037 avdevice_deps="avformat avcodec avutil"
3038 avfilter_deps="avutil"
3039 avformat_deps="avcodec avutil"
3040 avresample_deps="avutil"
3041 postproc_deps="avutil gpl"
3042 swresample_deps="avutil"
3043 swscale_deps="avutil"
3044
3045 # programs
3046 ffmpeg_deps="avcodec avfilter avformat swresample"
3047 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3048                null_filter
3049                setpts_filter trim_filter"
3050 ffplay_deps="avcodec avformat swscale swresample sdl"
3051 ffplay_libs='$sdl_libs'
3052 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3053 ffprobe_deps="avcodec avformat"
3054 ffserver_deps="avformat fork sarestart"
3055 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3056
3057 # documentation
3058 podpages_deps="perl"
3059 manpages_deps="perl pod2man"
3060 htmlpages_deps="perl"
3061 htmlpages_deps_any="makeinfo_html texi2html"
3062 txtpages_deps="perl makeinfo"
3063 doc_deps_any="manpages htmlpages podpages txtpages"
3064
3065 # default parameters
3066
3067 logfile="config.log"
3068
3069 # installation paths
3070 prefix_default="/usr/local"
3071 bindir_default='${prefix}/bin'
3072 datadir_default='${prefix}/share/ffmpeg'
3073 docdir_default='${prefix}/share/doc/ffmpeg'
3074 incdir_default='${prefix}/include'
3075 libdir_default='${prefix}/lib'
3076 mandir_default='${prefix}/share/man'
3077
3078 # toolchain
3079 ar_default="ar"
3080 cc_default="gcc"
3081 cxx_default="g++"
3082 host_cc_default="gcc"
3083 cp_f="cp -f"
3084 doxygen_default="doxygen"
3085 install="install"
3086 ln_s_default="ln -s -f"
3087 nm_default="nm -g"
3088 objformat="elf"
3089 pkg_config_default=pkg-config
3090 ranlib_default="ranlib"
3091 strip_default="strip"
3092 yasmexe_default="yasm"
3093 windres_default="windres"
3094
3095 # OS
3096 target_os_default=$(tolower $(uname -s))
3097 host_os=$target_os_default
3098
3099 # machine
3100 if test "$target_os_default" = aix; then
3101     arch_default=$(uname -p)
3102     strip_default="strip -X32_64"
3103 else
3104     arch_default=$(uname -m)
3105 fi
3106 cpu="generic"
3107 intrinsics="none"
3108
3109 # configurable options
3110 enable $PROGRAM_LIST
3111 enable $DOCUMENT_LIST
3112 enable $EXAMPLE_LIST
3113 enable $(filter_out avresample $LIBRARY_LIST)
3114 enable stripping
3115
3116 enable asm
3117 enable debug
3118 enable doc
3119 enable faan faandct faanidct
3120 enable optimizations
3121 enable runtime_cpudetect
3122 enable safe_bitstream_reader
3123 enable static
3124 enable swscale_alpha
3125 enable valgrind_backtrace
3126
3127 sws_max_filter_size_default=256
3128 set_default sws_max_filter_size
3129
3130 # Enable platform codecs by default.
3131 enable audiotoolbox
3132
3133 # Enable hwaccels by default.
3134 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3135 enable xlib
3136
3137 enable vda_framework videotoolbox videotoolbox_encoder
3138
3139 # build settings
3140 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3141 LIBPREF="lib"
3142 LIBSUF=".a"
3143 FULLNAME='$(NAME)$(BUILDSUF)'
3144 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3145 SLIBPREF="lib"
3146 SLIBSUF=".so"
3147 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3148 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3149 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3150 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3151 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3152 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3153
3154 asflags_filter=echo
3155 cflags_filter=echo
3156 ldflags_filter=echo
3157
3158 AS_C='-c'
3159 AS_O='-o $@'
3160 CC_C='-c'
3161 CC_E='-E -o $@'
3162 CC_O='-o $@'
3163 CXX_C='-c'
3164 CXX_O='-o $@'
3165 OBJCC_C='-c'
3166 OBJCC_E='-E -o $@'
3167 OBJCC_O='-o $@'
3168 LD_O='-o $@'
3169 LD_LIB='-l%'
3170 LD_PATH='-L'
3171 HOSTCC_C='-c'
3172 HOSTCC_E='-E -o $@'
3173 HOSTCC_O='-o $@'
3174 HOSTLD_O='-o $@'
3175
3176 host_libs='-lm'
3177 host_cflags_filter=echo
3178 host_ldflags_filter=echo
3179
3180 target_path='$(CURDIR)'
3181
3182 # since the object filename is not given with the -MM flag, the compiler
3183 # is only able to print the basename, and we must add the path ourselves
3184 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3185 DEPFLAGS='-MM'
3186
3187 # find source path
3188 if test -f configure; then
3189     source_path=.
3190 else
3191     source_path=$(cd $(dirname "$0"); pwd)
3192     case "$source_path" in
3193         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3194     esac
3195     test -e "$source_path/config.h" &&
3196         die "Out of tree builds are impossible with config.h in source dir."
3197 fi
3198
3199 for v in "$@"; do
3200     r=${v#*=}
3201     l=${v%"$r"}
3202     r=$(sh_quote "$r")
3203     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3204 done
3205
3206 find_things(){
3207     thing=$1
3208     pattern=$2
3209     file=$source_path/$3
3210     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3211 }
3212
3213 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3214 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3215 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3216 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3217 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3218 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3219 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3220 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3221 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3222
3223 find_things_extern(){
3224     thing=$1
3225     pattern=$2
3226     file=$source_path/$3
3227     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3228 }
3229
3230 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3231 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3232
3233 ALL_COMPONENTS="
3234     $BSF_LIST
3235     $DECODER_LIST
3236     $DEMUXER_LIST
3237     $ENCODER_LIST
3238     $FILTER_LIST
3239     $HWACCEL_LIST
3240     $INDEV_LIST
3241     $MUXER_LIST
3242     $OUTDEV_LIST
3243     $PARSER_LIST
3244     $PROTOCOL_LIST
3245 "
3246
3247 for n in $COMPONENT_LIST; do
3248     v=$(toupper ${n%s})_LIST
3249     eval enable \$$v
3250     eval ${n}_if_any="\$$v"
3251 done
3252
3253 enable $ARCH_EXT_LIST
3254
3255 die_unknown(){
3256     echo "Unknown option \"$1\"."
3257     echo "See $0 --help for available options."
3258     exit 1
3259 }
3260
3261 print_in_columns() {
3262     cols=$(expr $ncols / 24)
3263     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3264 }
3265
3266 show_list() {
3267     suffix=_$1
3268     shift
3269     echo $* | sed s/$suffix//g | print_in_columns
3270     exit 0
3271 }
3272
3273 rand_list(){
3274     IFS=', '
3275     set -- $*
3276     unset IFS
3277     for thing; do
3278         comp=${thing%:*}
3279         prob=${thing#$comp}
3280         prob=${prob#:}
3281         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3282         echo "prob ${prob:-0.5}"
3283         printf '%s\n' $comp
3284     done
3285 }
3286
3287 do_random(){
3288     action=$1
3289     shift
3290     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3291     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3292 }
3293
3294 for opt do
3295     optval="${opt#*=}"
3296     case "$opt" in
3297         --extra-ldflags=*)
3298             add_ldflags $optval
3299         ;;
3300         --extra-ldexeflags=*)
3301             add_ldexeflags $optval
3302         ;;
3303         --extra-ldlibflags=*)
3304             add_ldlibflags $optval
3305         ;;
3306         --extra-libs=*)
3307             add_extralibs $optval
3308         ;;
3309         --disable-devices)
3310             disable $INDEV_LIST $OUTDEV_LIST
3311         ;;
3312         --enable-debug=*)
3313             debuglevel="$optval"
3314         ;;
3315         --disable-programs)
3316             disable $PROGRAM_LIST
3317         ;;
3318         --disable-everything)
3319             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3320         ;;
3321         --disable-all)
3322             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3323             disable $LIBRARY_LIST $PROGRAM_LIST doc
3324             enable avutil
3325         ;;
3326         --enable-random|--disable-random)
3327             action=${opt%%-random}
3328             do_random ${action#--} $COMPONENT_LIST
3329         ;;
3330         --enable-random=*|--disable-random=*)
3331             action=${opt%%-random=*}
3332             do_random ${action#--} $optval
3333         ;;
3334         --enable-*=*|--disable-*=*)
3335             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3336             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3337             eval list=\$$(toupper $thing)_LIST
3338             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3339             list=$(filter "$name" $list)
3340             [ "$list" = "" ] && warn "Option $opt did not match anything"
3341             $action $list
3342         ;;
3343         --enable-?*|--disable-?*)
3344             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3345             if is_in $option $COMPONENT_LIST; then
3346                 test $action = disable && action=unset
3347                 eval $action \$$(toupper ${option%s})_LIST
3348             elif is_in $option $CMDLINE_SELECT; then
3349                 $action $option
3350             else
3351                 die_unknown $opt
3352             fi
3353         ;;
3354         --list-*)
3355             NAME="${opt#--list-}"
3356             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3357             NAME=${NAME%s}
3358             eval show_list $NAME \$$(toupper $NAME)_LIST
3359         ;;
3360         --help|-h) show_help
3361         ;;
3362         --fatal-warnings) enable fatal_warnings
3363         ;;
3364         *)
3365             optname="${opt%%=*}"
3366             optname="${optname#--}"
3367             optname=$(echo "$optname" | sed 's/-/_/g')
3368             if is_in $optname $CMDLINE_SET; then
3369                 eval $optname='$optval'
3370             elif is_in $optname $CMDLINE_APPEND; then
3371                 append $optname "$optval"
3372             else
3373                 die_unknown $opt
3374             fi
3375         ;;
3376     esac
3377 done
3378
3379 for e in $env; do
3380     eval "export $e"
3381 done
3382
3383 disabled logging && logfile=/dev/null
3384
3385 # Disable all the library-specific components if the library itself
3386 # is disabled, see AVCODEC_LIST and following _LIST variables.
3387
3388 disable_components(){
3389     disabled ${1} && disable $(
3390         eval components="\$$(toupper ${1})_COMPONENTS"
3391         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3392     )
3393 }
3394
3395 map 'disable_components $v' $LIBRARY_LIST
3396
3397 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3398 set >> $logfile
3399
3400 test -n "$valgrind" && toolchain="valgrind-memcheck"
3401
3402 case "$toolchain" in
3403     *-asan)
3404         cc_default="${toolchain%-asan}"
3405         add_cflags  -fsanitize=address
3406         add_ldflags -fsanitize=address
3407     ;;
3408     *-msan)
3409         cc_default="${toolchain%-msan}"
3410         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3411         add_ldflags -fsanitize=memory
3412     ;;
3413     *-tsan)
3414         cc_default="${toolchain%-tsan}"
3415         add_cflags  -fsanitize=thread -pie
3416         add_ldflags -fsanitize=thread -pie
3417         case "$toolchain" in
3418             gcc-tsan)
3419                 add_cflags  -fPIC
3420                 add_ldflags -fPIC
3421                 ;;
3422         esac
3423     ;;
3424     *-usan)
3425         cc_default="${toolchain%-usan}"
3426         add_cflags  -fsanitize=undefined
3427         add_ldflags -fsanitize=undefined
3428     ;;
3429     valgrind-*)
3430         target_exec_default="valgrind"
3431         case "$toolchain" in
3432             valgrind-massif)
3433                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3434                 ;;
3435             valgrind-memcheck)
3436                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3437                 ;;
3438         esac
3439     ;;
3440     msvc)
3441         # Check whether the current MSVC version needs the C99 converter.
3442         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3443         # support enough of C99 to build ffmpeg. Default to the new
3444         # behaviour if the regexp was unable to match anything, since this
3445         # successfully parses the version number of existing supported
3446         # versions that require the converter (MSVC 2010 and 2012).
3447         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3448         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3449             cc_default="cl"
3450         else
3451             cc_default="c99wrap cl"
3452         fi
3453         ld_default="$source_path/compat/windows/mslink"
3454         nm_default="dumpbin -symbols"
3455         ar_default="lib"
3456         case "$arch" in
3457         arm*)
3458             as_default="armasm"
3459             ;;
3460         esac
3461         target_os_default="win32"
3462         # Use a relative path for TMPDIR. This makes sure all the
3463         # ffconf temp files are written with a relative path, avoiding
3464         # issues with msys/win32 path conversion for MSVC parameters
3465         # such as -Fo<file> or -out:<file>.
3466         TMPDIR=.
3467     ;;
3468     icl)
3469         cc_default="icl"
3470         ld_default="xilink"
3471         nm_default="dumpbin -symbols"
3472         ar_default="xilib"
3473         target_os_default="win32"
3474         TMPDIR=.
3475     ;;
3476     gcov)
3477         add_cflags  -fprofile-arcs -ftest-coverage
3478         add_ldflags -fprofile-arcs -ftest-coverage
3479     ;;
3480     llvm-cov)
3481         add_cflags -fprofile-arcs -ftest-coverage
3482         add_ldflags --coverage
3483     ;;
3484     hardened)
3485         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3486         add_cflags   -fno-strict-overflow -fstack-protector-all
3487         add_ldflags  -Wl,-z,relro -Wl,-z,now
3488     ;;
3489     ?*)
3490         die "Unknown toolchain $toolchain"
3491     ;;
3492 esac
3493
3494 test -n "$cross_prefix" && enable cross_compile
3495
3496 if enabled cross_compile; then
3497     test -n "$arch" && test -n "$target_os" ||
3498         die "Must specify target arch and OS when cross-compiling"
3499 fi
3500
3501 ar_default="${cross_prefix}${ar_default}"
3502 cc_default="${cross_prefix}${cc_default}"
3503 cxx_default="${cross_prefix}${cxx_default}"
3504 nm_default="${cross_prefix}${nm_default}"
3505 pkg_config_default="${cross_prefix}${pkg_config_default}"
3506 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3507     ranlib_default="${cross_prefix}${ranlib_default} -D"
3508 else
3509     ranlib_default="${cross_prefix}${ranlib_default}"
3510 fi
3511 strip_default="${cross_prefix}${strip_default}"
3512 windres_default="${cross_prefix}${windres_default}"
3513
3514 sysinclude_default="${sysroot}/usr/include"
3515
3516 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3517     target_exec target_os yasmexe
3518 enabled cross_compile || host_cc_default=$cc
3519 set_default host_cc
3520
3521 pkg_config_fail_message=""
3522 if ! $pkg_config --version >/dev/null 2>&1; then
3523     warn "$pkg_config not found, library detection may fail."
3524     pkg_config=false
3525 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3526     pkg_config_fail_message="
3527 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3528 fi
3529
3530 if test $doxygen != $doxygen_default && \
3531   ! $doxygen --version >/dev/null 2>&1; then
3532     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3533 fi
3534
3535 exesuf() {
3536     case $1 in
3537         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3538     esac
3539 }
3540
3541 EXESUF=$(exesuf $target_os)
3542 HOSTEXESUF=$(exesuf $host_os)
3543
3544 # set temporary file name
3545 : ${TMPDIR:=$TEMPDIR}
3546 : ${TMPDIR:=$TMP}
3547 : ${TMPDIR:=/tmp}
3548
3549 if [ -n "$tempprefix" ] ; then
3550     mktemp(){
3551         echo $tempprefix.${HOSTNAME}.${UID}
3552     }
3553 elif ! check_cmd mktemp -u XXXXXX; then
3554     # simple replacement for missing mktemp
3555     # NOT SAFE FOR GENERAL USE
3556     mktemp(){
3557         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3558     }
3559 fi
3560
3561 tmpfile(){
3562     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3563         (set -C; exec > $tmp) 2>/dev/null ||
3564         die "Unable to create temporary file in $TMPDIR."
3565     append TMPFILES $tmp
3566     eval $1=$tmp
3567 }
3568
3569 trap 'rm -f -- $TMPFILES' EXIT
3570
3571 tmpfile TMPASM .asm
3572 tmpfile TMPC   .c
3573 tmpfile TMPCPP .cpp
3574 tmpfile TMPE   $EXESUF
3575 tmpfile TMPH   .h
3576 tmpfile TMPM   .m
3577 tmpfile TMPO   .o
3578 tmpfile TMPS   .S
3579 tmpfile TMPSH  .sh
3580 tmpfile TMPV   .ver
3581
3582 unset -f mktemp
3583
3584 chmod +x $TMPE
3585
3586 # make sure we can execute files in $TMPDIR
3587 cat > $TMPSH 2>> $logfile <<EOF
3588 #! /bin/sh
3589 EOF
3590 chmod +x $TMPSH >> $logfile 2>&1
3591 if ! $TMPSH >> $logfile 2>&1; then
3592     cat <<EOF
3593 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3594 variable to another directory and make sure that it is not mounted noexec.
3595 EOF
3596     die "Sanity test failed."
3597 fi
3598
3599 armasm_flags(){
3600     for flag; do
3601         case $flag in
3602             # Filter out MSVC cl.exe options from cflags that shouldn't
3603             # be passed to gas-preprocessor
3604             -M[TD]*)                                            ;;
3605             *)                  echo $flag                      ;;
3606         esac
3607    done
3608 }
3609
3610 ccc_flags(){
3611     for flag; do
3612         case $flag in
3613             -std=c99)           echo -c99                       ;;
3614             -mcpu=*)            echo -arch ${flag#*=}           ;;
3615             -mieee)             echo -ieee                      ;;
3616             -O*|-fast)          echo $flag                      ;;
3617             -fno-math-errno)    echo -assume nomath_errno       ;;
3618             -g)                 echo -g3                        ;;
3619             -Wall)              echo -msg_enable level2         ;;
3620             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3621             -Wl,*)              echo $flag                      ;;
3622             -f*|-W*)                                            ;;
3623             *)                  echo $flag                      ;;
3624         esac
3625    done
3626 }
3627
3628 cparser_flags(){
3629     for flag; do
3630         case $flag in
3631             -Wno-switch)             echo -Wno-switch-enum ;;
3632             -Wno-format-zero-length) ;;
3633             -Wdisabled-optimization) ;;
3634             -Wno-pointer-sign)       echo -Wno-other ;;
3635             *)                       echo $flag ;;
3636         esac
3637     done
3638 }
3639
3640 msvc_common_flags(){
3641     for flag; do
3642         case $flag in
3643             # In addition to specifying certain flags under the compiler
3644             # specific filters, they must be specified here as well or else the
3645             # generic catch all at the bottom will print the original flag.
3646             -Wall)                ;;
3647             -std=c99)             ;;
3648             # Common flags
3649             -fomit-frame-pointer) ;;
3650             -g)                   echo -Z7 ;;
3651             -fno-math-errno)      ;;
3652             -fno-common)          ;;
3653             -fno-signed-zeros)    ;;
3654             -fPIC)                ;;
3655             -mthumb)              ;;
3656             -march=*)             ;;
3657             -lz)                  echo zlib.lib ;;
3658             -lavifil32)           echo vfw32.lib ;;
3659             -lavicap32)           echo vfw32.lib user32.lib ;;
3660             -lx264)               echo libx264.lib ;;
3661             -l*)                  echo ${flag#-l}.lib ;;
3662             -LARGEADDRESSAWARE)   echo $flag ;;
3663             -L*)                  echo -libpath:${flag#-L} ;;
3664             *)                    echo $flag ;;
3665         esac
3666     done
3667 }
3668
3669 msvc_flags(){
3670     msvc_common_flags "$@"
3671     for flag; do
3672         case $flag in
3673             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3674                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3675                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3676                                        -wd4307 \
3677                                        -wd4273 -wd4554 -wd4701 ;;
3678         esac
3679     done
3680 }
3681
3682 icl_flags(){
3683     msvc_common_flags "$@"
3684     for flag; do
3685         case $flag in
3686             # Despite what Intel's documentation says -Wall, which is supported
3687             # on Windows, does enable remarks so disable them here.
3688             -Wall)                echo $flag -Qdiag-disable:remark ;;
3689             -std=c99)             echo -Qstd=c99 ;;
3690             -flto)                echo -ipo ;;
3691         esac
3692     done
3693 }
3694
3695 icc_flags(){
3696     for flag; do
3697         case $flag in
3698             -flto)                echo -ipo ;;
3699             *)                    echo $flag ;;
3700         esac
3701     done
3702 }
3703
3704 pgi_flags(){
3705     for flag; do
3706         case $flag in
3707             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3708             -fomit-frame-pointer) echo -Mnoframe ;;
3709             -g)                   echo -gopt ;;
3710             *)                    echo $flag ;;
3711         esac
3712     done
3713 }
3714
3715 suncc_flags(){
3716     for flag; do
3717         case $flag in
3718             -march=*|-mcpu=*)
3719                 case "${flag#*=}" in
3720                     native)                   echo -xtarget=native       ;;
3721                     v9|niagara)               echo -xarch=sparc          ;;
3722                     ultrasparc)               echo -xarch=sparcvis       ;;
3723                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3724                     i586|pentium)             echo -xchip=pentium        ;;
3725                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3726                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3727                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3728                     pentium4*)          echo -xtarget=pentium4           ;;
3729                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3730                     *-sse3)             echo -xarch=sse3                 ;;
3731                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3732                     bonnell)                   echo -xarch=ssse3         ;;
3733                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3734                     westmere)                  echo -xtarget=westmere    ;;
3735                     silvermont)                echo -xarch=sse4_2        ;;
3736                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3737                     core-avx*|ivybridge|haswell|broadwell)
3738                                                echo -xarch=avx           ;;
3739                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3740                     btver1)                    echo -xarch=amdsse4a      ;;
3741                     btver2|bdver*)             echo -xarch=avx           ;;
3742                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3743                     k8|opteron|athlon64|athlon-fx)
3744                                                echo -xarch=sse2a         ;;
3745                     athlon*)                   echo -xarch=pentium_proa  ;;
3746                 esac
3747                 ;;
3748             -std=c99)             echo -xc99              ;;
3749             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3750             -fPIC)                echo -KPIC -xcode=pic32 ;;
3751             -W*,*)                echo $flag              ;;
3752             -f*-*|-W*|-mimpure-text)                      ;;
3753             -shared)              echo -G                 ;;
3754             *)                    echo $flag              ;;
3755         esac
3756     done
3757 }
3758
3759 tms470_flags(){
3760     for flag; do
3761         case $flag in
3762             -march=*|-mcpu=*)
3763                 case "${flag#*=}" in
3764                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3765                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3766                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3767                     armv6*|arm11*)          echo -mv=6   ;;
3768                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3769                                             echo -mv=5e  ;;
3770                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3771                 esac
3772                 ;;
3773             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3774             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3775             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3776             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3777             -msoft-float)   echo --float_support=vfplib       ;;
3778             -O[0-3]|-mf=*)  echo $flag                        ;;
3779             -g)             echo -g -mn                       ;;
3780             -pds=*)         echo $flag                        ;;
3781             -D*|-I*)        echo $flag                        ;;
3782             --gcc|--abi=*)  echo $flag                        ;;
3783             -me)            echo $flag                        ;;
3784         esac
3785     done
3786 }
3787
3788 probe_cc(){
3789     pfx=$1
3790     _cc=$2
3791     first=$3
3792
3793     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3794     unset _ld_o _ldflags _ld_lib _ld_path
3795     unset _depflags _DEPCMD _DEPFLAGS
3796     _flags_filter=echo
3797
3798     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3799         true # no-op to avoid reading stdin in following checks
3800     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3801         _type=llvm_gcc
3802         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3803         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3804         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3805         _cflags_speed='-O3'
3806         _cflags_size='-Os'
3807     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3808         _type=gcc
3809         gcc_version=$($_cc --version | head -n1)
3810         gcc_basever=$($_cc -dumpversion)
3811         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3812         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3813         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3814         case $gcc_basever in
3815             2) ;;
3816             2.*) ;;
3817             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3818         esac
3819         if [ "$first" = true ]; then
3820             case $gcc_basever in
3821                 4.2*)
3822                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3823             esac
3824         fi
3825         _cflags_speed='-O3'
3826         _cflags_size='-Os'
3827     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3828         _type=icc
3829         _ident=$($_cc --version | head -n1)
3830         _depflags='-MMD'
3831         _cflags_speed='-O3'
3832         _cflags_size='-Os'
3833         _cflags_noopt='-O1'
3834         _flags_filter=icc_flags
3835     elif $_cc -v 2>&1 | grep -q xlc; then
3836         _type=xlc
3837         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3838         _cflags_speed='-O5'
3839         _cflags_size='-O5 -qcompact'
3840     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3841         _type=ccc
3842         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3843         _DEPFLAGS='-M'
3844         _cflags_speed='-fast'
3845         _cflags_size='-O1'
3846         _flags_filter=ccc_flags
3847     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3848         test -d "$sysroot" || die "No valid sysroot specified."
3849         _type=armcc
3850         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3851         armcc_conf="$PWD/armcc.conf"
3852         $_cc --arm_linux_configure                 \
3853              --arm_linux_config_file="$armcc_conf" \
3854              --configure_sysroot="$sysroot"        \
3855              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3856              die "Error creating armcc configuration file."
3857         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3858         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3859         as_default="${cross_prefix}gcc"
3860         _depflags='-MMD'
3861         _cflags_speed='-O3'
3862         _cflags_size='-Os'
3863     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3864         _type=tms470
3865         _ident=$($_cc -version | head -n1 | tr -s ' ')
3866         _flags='--gcc --abi=eabi -me'
3867         _cc_e='-ppl -fe=$@'
3868         _cc_o='-fe=$@'
3869         _depflags='-ppa -ppd=$(@:.o=.d)'
3870         _cflags_speed='-O3 -mf=5'
3871         _cflags_size='-O3 -mf=2'
3872         _flags_filter=tms470_flags
3873     elif $_cc -v 2>&1 | grep -q clang; then
3874         _type=clang
3875         _ident=$($_cc --version 2>/dev/null | head -n1)
3876         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3877         _cflags_speed='-O3'
3878         _cflags_size='-Os'
3879     elif $_cc -V 2>&1 | grep -q Sun; then
3880         _type=suncc
3881         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3882         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3883         _DEPFLAGS='-xM1 -xc99'
3884         _ldflags='-std=c99'
3885         _cflags_speed='-O5'
3886         _cflags_size='-O5 -xspace'
3887         _flags_filter=suncc_flags
3888     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3889         _type=pathscale
3890         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3891         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3892         _cflags_speed='-O2'
3893         _cflags_size='-Os'
3894         _flags_filter='filter_out -Wdisabled-optimization'
3895     elif $_cc -v 2>&1 | grep -q Open64; then
3896         _type=open64
3897         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3898         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3899         _cflags_speed='-O2'
3900         _cflags_size='-Os'
3901         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3902     elif $_cc -V 2>&1 | grep -q Portland; then
3903         _type=pgi
3904         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3905         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3906         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3907         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3908         _cflags_noopt="-O"
3909         _flags_filter=pgi_flags
3910     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3911         _type=armasm
3912         _ident=$($_cc | head -n1)
3913         # 4509: "This form of conditional instruction is deprecated"
3914         _flags="-nologo -ignore 4509"
3915         _flags_filter=armasm_flags
3916     elif $_cc 2>&1 | grep -q Intel; then
3917         _type=icl
3918         _ident=$($_cc 2>&1 | head -n1)
3919         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3920         # Not only is O3 broken on 13.x+ but it is slower on all previous
3921         # versions (tested) as well.
3922         _cflags_speed="-O2"
3923         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3924         if $_cc 2>&1 | grep -q Linker; then
3925             _ld_o='-out:$@'
3926         else
3927             _ld_o='-Fe$@'
3928         fi
3929         _cc_o='-Fo$@'
3930         _cc_e='-P'
3931         _flags_filter=icl_flags
3932         _ld_lib='lib%.a'
3933         _ld_path='-libpath:'
3934         # -Qdiag-error to make icl error when seeing certain unknown arguments
3935         _flags='-nologo -Qdiag-error:4044,10157'
3936         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3937         # with MSVC which enables it by default.
3938         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3939         disable stripping
3940     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3941         _type=msvc
3942         _ident=$($_cc 2>&1 | head -n1)
3943         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3944         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3945         _cflags_speed="-O2"
3946         _cflags_size="-O1"
3947         if $_cc -nologo- 2>&1 | grep -q Linker; then
3948             _ld_o='-out:$@'
3949         else
3950             _ld_o='-Fe$@'
3951         fi
3952         _cc_o='-Fo$@'
3953         _cc_e='-P -Fi$@'
3954         _flags_filter=msvc_flags
3955         _ld_lib='lib%.a'
3956         _ld_path='-libpath:'
3957         _flags='-nologo'
3958         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3959         disable stripping
3960     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3961         _type=cparser
3962         _ident=$($_cc --version | head -n1)
3963         _depflags='-MMD'
3964         _cflags_speed='-O4'
3965         _cflags_size='-O2'
3966         _flags_filter=cparser_flags
3967     fi
3968
3969     eval ${pfx}_type=\$_type
3970     eval ${pfx}_ident=\$_ident
3971 }
3972
3973 set_ccvars(){
3974     eval ${1}_C=\${_cc_c-\${${1}_C}}
3975     eval ${1}_E=\${_cc_e-\${${1}_E}}
3976     eval ${1}_O=\${_cc_o-\${${1}_O}}
3977
3978     if [ -n "$_depflags" ]; then
3979         eval ${1}_DEPFLAGS=\$_depflags
3980     else
3981         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3982         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3983         eval DEP${1}FLAGS=\$_flags
3984     fi
3985 }
3986
3987 probe_cc cc "$cc" "true"
3988 cflags_filter=$_flags_filter
3989 cflags_speed=$_cflags_speed
3990 cflags_size=$_cflags_size
3991 cflags_noopt=$_cflags_noopt
3992 add_cflags $_flags $_cflags
3993 cc_ldflags=$_ldflags
3994 set_ccvars CC
3995
3996 probe_cc hostcc "$host_cc"
3997 host_cflags_filter=$_flags_filter
3998 add_host_cflags  $_flags $_cflags
3999 set_ccvars HOSTCC
4000
4001 test -n "$cc_type" && enable $cc_type ||
4002     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4003
4004 : ${as_default:=$cc}
4005 : ${objcc_default:=$cc}
4006 : ${dep_cc_default:=$cc}
4007 : ${ld_default:=$cc}
4008 : ${host_ld_default:=$host_cc}
4009 set_default ar as objcc dep_cc ld ln_s host_ld windres
4010
4011 probe_cc as "$as"
4012 asflags_filter=$_flags_filter
4013 add_asflags $_flags $_cflags
4014 set_ccvars AS
4015
4016 probe_cc objcc "$objcc"
4017 objcflags_filter=$_flags_filter
4018 add_objcflags $_flags $_cflags
4019 set_ccvars OBJC
4020
4021 probe_cc ld "$ld"
4022 ldflags_filter=$_flags_filter
4023 add_ldflags $_flags $_ldflags
4024 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4025 LD_O=${_ld_o-$LD_O}
4026 LD_LIB=${_ld_lib-$LD_LIB}
4027 LD_PATH=${_ld_path-$LD_PATH}
4028
4029 probe_cc hostld "$host_ld"
4030 host_ldflags_filter=$_flags_filter
4031 add_host_ldflags $_flags $_ldflags
4032 HOSTLD_O=${_ld_o-$HOSTLD_O}
4033
4034 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4035     probe_cc depcc "$dep_cc"
4036     CCDEP=${_DEPCMD:-$DEPCMD}
4037     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4038     DEPCCFLAGS=$_flags
4039 fi
4040
4041 if $ar 2>&1 | grep -q Microsoft; then
4042     arflags="-nologo"
4043     ar_o='-out:$@'
4044 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4045     arflags="rq"
4046     ar_o='$@'
4047 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4048     arflags='-Xany -r -c'
4049     ar_o='$@'
4050 elif $ar 2>&1 | grep -q "\[D\] "; then
4051     arflags="rcD"
4052     ar_o='$@'
4053 else
4054     arflags="rc"
4055     ar_o='$@'
4056 fi
4057
4058 add_cflags $extra_cflags
4059 add_cxxflags $extra_cxxflags
4060 add_objcflags $extra_objcflags
4061 add_asflags $extra_cflags
4062
4063 if test -n "$sysroot"; then
4064     case "$cc_type" in
4065         gcc|llvm_gcc|clang)
4066             add_cppflags --sysroot="$sysroot"
4067             add_ldflags --sysroot="$sysroot"
4068 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4069             add_cppflags -isysroot "$sysroot"
4070             add_ldflags -isysroot "$sysroot"
4071         ;;
4072         tms470)
4073             add_cppflags -I"$sysinclude"
4074             add_ldflags  --sysroot="$sysroot"
4075         ;;
4076     esac
4077 fi
4078
4079 if test "$cpu" = host; then
4080     enabled cross_compile &&
4081         die "--cpu=host makes no sense when cross-compiling."
4082
4083     case "$cc_type" in
4084         gcc|llvm_gcc)
4085             check_native(){
4086                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4087                 sed -n "/cc1.*$1=/{
4088                             s/.*$1=\\([^ ]*\\).*/\\1/
4089                             p
4090                             q
4091                         }" $TMPE
4092             }
4093             cpu=$(check_native -march || check_native -mcpu)
4094         ;;
4095         clang)
4096             check_native(){
4097                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4098                 sed -n "/cc1.*-target-cpu /{
4099                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4100                             p
4101                             q
4102                         }" $TMPE
4103             }
4104             cpu=$(check_native -march)
4105         ;;
4106     esac
4107
4108     test "${cpu:-host}" = host &&
4109         die "--cpu=host not supported with compiler $cc"
4110 fi
4111
4112 # Deal with common $arch aliases
4113 case "$arch" in
4114     aarch64|arm64)
4115         arch="aarch64"
4116     ;;
4117     arm*|iPad*|iPhone*)
4118         arch="arm"
4119     ;;
4120     mips*|IP*)
4121         case "$arch" in
4122         *el)
4123             add_cppflags -EL
4124             add_ldflags -EL
4125         ;;
4126         *eb)
4127             add_cppflags -EB
4128             add_ldflags -EB
4129         ;;
4130         esac
4131         arch="mips"
4132     ;;
4133     parisc*|hppa*)
4134         arch="parisc"
4135     ;;
4136     "Power Macintosh"|ppc*|powerpc*)
4137         arch="ppc"
4138     ;;
4139     s390|s390x)
4140         arch="s390"
4141     ;;
4142     sh4|sh)
4143         arch="sh4"
4144     ;;
4145     sun4u|sparc*)
4146         arch="sparc"
4147     ;;
4148     tilegx|tile-gx)
4149         arch="tilegx"
4150     ;;
4151     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4152         arch="x86"
4153     ;;
4154 esac
4155
4156 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4157 enable $arch
4158
4159 # Add processor-specific flags
4160 if enabled aarch64; then
4161
4162     case $cpu in
4163         armv*)
4164             cpuflags="-march=$cpu"
4165         ;;
4166         *)
4167             cpuflags="-mcpu=$cpu"
4168         ;;
4169     esac
4170
4171 elif enabled alpha; then
4172
4173     cpuflags="-mcpu=$cpu"
4174
4175 elif enabled arm; then
4176
4177     check_arm_arch() {
4178         check_cpp_condition stddef.h \
4179             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4180             $cpuflags
4181     }
4182
4183     probe_arm_arch() {
4184         if   check_arm_arch 4;        then echo armv4;
4185         elif check_arm_arch 4T;       then echo armv4t;
4186         elif check_arm_arch 5;        then echo armv5;
4187         elif check_arm_arch 5E;       then echo armv5e;
4188         elif check_arm_arch 5T;       then echo armv5t;
4189         elif check_arm_arch 5TE;      then echo armv5te;
4190         elif check_arm_arch 5TEJ;     then echo armv5te;
4191         elif check_arm_arch 6;        then echo armv6;
4192         elif check_arm_arch 6J;       then echo armv6j;
4193         elif check_arm_arch 6K;       then echo armv6k;
4194         elif check_arm_arch 6Z;       then echo armv6z;
4195         elif check_arm_arch 6ZK;      then echo armv6zk;
4196         elif check_arm_arch 6T2;      then echo armv6t2;
4197         elif check_arm_arch 7;        then echo armv7;
4198         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4199         elif check_arm_arch 7S;       then echo armv7-a;
4200         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4201         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4202         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4203         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4204         fi
4205     }
4206
4207     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4208
4209     case $cpu in
4210         armv*)
4211             cpuflags="-march=$cpu"
4212             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4213         ;;
4214         *)
4215             cpuflags="-mcpu=$cpu"
4216             case $cpu in
4217                 cortex-a*)                               subarch=armv7a  ;;
4218                 cortex-r*)                               subarch=armv7r  ;;
4219                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4220                 arm11*)                                  subarch=armv6   ;;
4221                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4222                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4223                 *)                             subarch=$(probe_arm_arch) ;;
4224             esac
4225         ;;
4226     esac
4227
4228     case "$subarch" in
4229         armv5t*)    enable fast_clz                ;;
4230         armv[6-8]*)
4231             enable fast_clz
4232             disabled fast_unaligned || enable fast_unaligned
4233             ;;
4234     esac
4235
4236 elif enabled avr32; then
4237
4238     case $cpu in
4239         ap7[02]0[0-2])
4240             subarch="avr32_ap"
4241             cpuflags="-mpart=$cpu"
4242         ;;
4243         ap)
4244             subarch="avr32_ap"
4245             cpuflags="-march=$cpu"
4246         ;;
4247         uc3[ab]*)
4248             subarch="avr32_uc"
4249             cpuflags="-mcpu=$cpu"
4250         ;;
4251         uc)
4252             subarch="avr32_uc"
4253             cpuflags="-march=$cpu"
4254         ;;
4255     esac
4256
4257 elif enabled bfin; then
4258
4259     cpuflags="-mcpu=$cpu"
4260
4261 elif enabled mips; then
4262
4263     cpuflags="-march=$cpu"
4264
4265     if [ "$cpu" != "generic" ]; then
4266         disable mips32r2
4267         disable mips32r5
4268         disable mips64r2
4269         disable mips32r6
4270         disable mips64r6
4271         disable loongson2
4272         disable loongson3
4273
4274         case $cpu in
4275             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4276                 enable mips32r2
4277                 disable msa
4278             ;;
4279             p5600|i6400)
4280                 disable mipsdsp
4281                 disable mipsdspr2
4282             ;;
4283             loongson*)
4284                 enable loongson2
4285                 enable loongson3
4286                 enable local_aligned_8 local_aligned_16 local_aligned_32
4287                 enable simd_align_16
4288                 enable fast_64bit
4289                 enable fast_clz
4290                 enable fast_cmov
4291                 enable fast_unaligned
4292                 disable aligned_stack
4293                 case $cpu in
4294                     loongson3*)
4295                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4296                     ;;
4297                     loongson2e)
4298                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4299                     ;;
4300                     loongson2f)
4301                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4302                     ;;
4303                 esac
4304             ;;
4305             *)
4306                 # Unknown CPU. Disable everything.
4307                 warn "unknown CPU. Disabling all MIPS optimizations."
4308                 disable mipsfpu
4309                 disable mipsdsp
4310                 disable mipsdspr2
4311                 disable msa
4312                 disable mmi
4313             ;;
4314         esac
4315
4316         case $cpu in
4317             24kc)
4318                 disable mipsfpu
4319                 disable mipsdsp
4320                 disable mipsdspr2
4321             ;;
4322             24kf*)
4323                 disable mipsdsp
4324                 disable mipsdspr2
4325             ;;
4326             24kec|34kc|1004kc)
4327                 disable mipsfpu
4328                 disable mipsdspr2
4329             ;;
4330             24kef*|34kf*|1004kf*)
4331                 disable mipsdspr2
4332             ;;
4333             74kc)
4334                 disable mipsfpu
4335             ;;
4336             p5600)
4337                 enable mips32r5
4338                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4339             ;;
4340             i6400)
4341                 enable mips64r6
4342                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4343             ;;
4344         esac
4345     else
4346         # We do not disable anything. Is up to the user to disable the unwanted features.
4347         warn 'generic cpu selected'
4348     fi
4349
4350 elif enabled ppc; then
4351
4352     disable ldbrx
4353
4354     case $(tolower $cpu) in
4355         601|ppc601|powerpc601)
4356             cpuflags="-mcpu=601"
4357             disable altivec
4358         ;;
4359         603*|ppc603*|powerpc603*)
4360             cpuflags="-mcpu=603"
4361             disable altivec
4362         ;;
4363         604*|ppc604*|powerpc604*)
4364             cpuflags="-mcpu=604"
4365             disable altivec
4366         ;;
4367         g3|75*|ppc75*|powerpc75*)
4368             cpuflags="-mcpu=750"
4369             disable altivec
4370         ;;
4371         g4|745*|ppc745*|powerpc745*)
4372             cpuflags="-mcpu=7450"
4373             disable vsx
4374         ;;
4375         74*|ppc74*|powerpc74*)
4376             cpuflags="-mcpu=7400"
4377             disable vsx
4378         ;;
4379         g5|970|ppc970|powerpc970)
4380             cpuflags="-mcpu=970"
4381             disable vsx
4382         ;;
4383         power[3-6]*)
4384             cpuflags="-mcpu=$cpu"
4385             disable vsx
4386         ;;
4387         power[7-8]*)
4388             cpuflags="-mcpu=$cpu"
4389         ;;
4390         cell)
4391             cpuflags="-mcpu=cell"
4392             enable ldbrx
4393             disable vsx
4394         ;;
4395         e500mc)
4396             cpuflags="-mcpu=e500mc"
4397             disable altivec
4398         ;;
4399         e500v2)
4400             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4401             disable altivec
4402             disable dcbzl
4403         ;;
4404         e500)
4405             cpuflags="-mcpu=8540 -mhard-float"
4406             disable altivec
4407             disable dcbzl
4408         ;;
4409     esac
4410
4411 elif enabled sparc; then
4412
4413     case $cpu in
4414         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4415             cpuflags="-mcpu=$cpu"
4416         ;;
4417         ultrasparc*|niagara[234])
4418             cpuflags="-mcpu=$cpu"
4419         ;;
4420     esac
4421
4422 elif enabled x86; then
4423
4424     case $cpu in
4425         i[345]86|pentium)
4426             cpuflags="-march=$cpu"
4427             disable i686
4428             disable mmx
4429         ;;
4430         # targets that do NOT support nopl and conditional mov (cmov)
4431         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4432             cpuflags="-march=$cpu"
4433             disable i686
4434         ;;
4435         # targets that do support nopl and conditional mov (cmov)
4436         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4437         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4438             cpuflags="-march=$cpu"
4439             enable i686
4440             enable fast_cmov
4441         ;;
4442         # targets that do support conditional mov but on which it's slow
4443         pentium4|pentium4m|prescott|nocona)
4444             cpuflags="-march=$cpu"
4445             enable i686
4446             disable fast_cmov
4447         ;;
4448     esac
4449
4450 fi
4451
4452 if [ "$cpu" != generic ]; then
4453     add_cflags  $cpuflags
4454     add_asflags $cpuflags
4455     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4456 fi
4457
4458 # compiler sanity check
4459 check_exec <<EOF
4460 int main(void){ return 0; }
4461 EOF
4462 if test "$?" != 0; then
4463     echo "$cc is unable to create an executable file."
4464     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4465         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4466         echo "Only do this if you know what cross compiling means."
4467     fi
4468     die "C compiler test failed."
4469 fi
4470
4471 add_cppflags -D_ISOC99_SOURCE
4472 add_cxxflags -D__STDC_CONSTANT_MACROS
4473 check_cflags -std=c99
4474 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4475 #include <stdlib.h>
4476 EOF
4477 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4478 #include <stdlib.h>
4479 EOF
4480
4481 add_host_cppflags -D_ISOC99_SOURCE
4482 check_host_cflags -std=c99
4483 check_host_cflags -Wall
4484 check_host_cflags -O3
4485
4486 check_64bit(){
4487     arch32=$1
4488     arch64=$2
4489     expr=$3
4490     check_code cc "" "int test[2*($expr) - 1]" &&
4491         subarch=$arch64 || subarch=$arch32
4492 }
4493
4494 case "$arch" in
4495     aarch64|alpha|ia64)
4496         spic=$shared
4497     ;;
4498     mips)
4499         check_64bit mips mips64 '_MIPS_SIM > 1'
4500         spic=$shared
4501     ;;
4502     parisc)
4503         check_64bit parisc parisc64 'sizeof(void *) > 4'
4504         spic=$shared
4505     ;;
4506     ppc)
4507         check_64bit ppc ppc64 'sizeof(void *) > 4'
4508         spic=$shared
4509     ;;
4510     s390)
4511         check_64bit s390 s390x 'sizeof(void *) > 4'
4512         spic=$shared
4513     ;;
4514     sparc)
4515         check_64bit sparc sparc64 'sizeof(void *) > 4'
4516         spic=$shared
4517     ;;
4518     x86)
4519         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4520         # Treat x32 as x64 for now. Note it also needs spic=$shared
4521         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4522             subarch=x86_64
4523         if test "$subarch" = "x86_64"; then
4524             spic=$shared
4525         fi
4526     ;;
4527     ppc)
4528         check_cc <<EOF && subarch="ppc64"
4529         int test[(int)sizeof(char*) - 7];
4530 EOF
4531     ;;
4532 esac
4533
4534 enable $subarch
4535 enabled spic && enable_weak pic
4536
4537 # OS specific
4538 case $target_os in
4539     aix)
4540         SHFLAGS=-shared
4541         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4542         enabled shared && add_ldflags -Wl,-brtl
4543         ;;
4544     android)
4545         disable symver
4546         enable section_data_rel_ro
4547         SLIB_INSTALL_NAME='$(SLIBNAME)'
4548         SLIB_INSTALL_LINKS=
4549         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4550         ;;
4551     haiku)
4552         prefix_default="/boot/common"
4553         network_extralibs="-lnetwork"
4554         host_libs=
4555         ;;
4556     sunos)
4557         SHFLAGS='-shared -Wl,-h,$$(@F)'
4558         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4559         network_extralibs="-lsocket -lnsl"
4560         add_cppflags -D__EXTENSIONS__
4561         # When using suncc to build, the Solaris linker will mark
4562         # an executable with each instruction set encountered by
4563         # the Solaris assembler.  As our libraries contain their own
4564         # guards for processor-specific code, instead suppress
4565         # generation of the HWCAPS ELF section on Solaris x86 only.
4566         enabled_all suncc x86 &&
4567             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4568             add_ldflags -Wl,-M,mapfile
4569         nm_default='nm -P -g'
4570         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4571         ;;
4572     netbsd)
4573         disable symver
4574         oss_indev_extralibs="-lossaudio"
4575         oss_outdev_extralibs="-lossaudio"
4576         enabled gcc || check_ldflags -Wl,-zmuldefs
4577         ;;
4578     openbsd|bitrig)
4579         disable symver
4580         SHFLAGS='-shared'
4581         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4582         SLIB_INSTALL_LINKS=
4583         oss_indev_extralibs="-lossaudio"
4584         oss_outdev_extralibs="-lossaudio"
4585         ;;
4586     dragonfly)
4587         disable symver
4588         ;;
4589     freebsd)
4590         ;;
4591     bsd/os)
4592         add_extralibs -lpoll -lgnugetopt
4593         strip="strip -d"
4594         ;;
4595     darwin)
4596         enabled ppc && add_asflags -force_cpusubtype_ALL
4597         install_name_dir_default='$(SHLIBDIR)'
4598         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4599         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4600         strip="${strip} -x"
4601         add_ldflags -Wl,-dynamic,-search_paths_first
4602         SLIBSUF=".dylib"
4603         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4604         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4605         objformat="macho"
4606         enabled x86_64 && objformat="macho64"
4607         enabled_any pic shared x86_64 ||
4608             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4609         check_header dispatch/dispatch.h
4610         ;;
4611     msys*)
4612         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4613         ;;
4614     mingw32*|mingw64*)
4615         if test $target_os = "mingw32ce"; then
4616             disable network
4617         else
4618             target_os=mingw32
4619         fi
4620         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4621         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4622         LIBTARGET=i386
4623         if enabled x86_64; then
4624             LIBTARGET="i386:x86-64"
4625         elif enabled arm; then
4626             LIBTARGET=arm-wince
4627         fi
4628         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4629         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4630         shlibdir_default="$bindir_default"
4631         SLIBPREF=""
4632         SLIBSUF=".dll"
4633         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4634         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4635         dlltool="${cross_prefix}dlltool"
4636         if check_cmd lib.exe -list; then
4637             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4638             if enabled x86_64; then
4639                 LIBTARGET=x64
4640             fi
4641         elif check_cmd $dlltool --version; then
4642             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4643         fi
4644         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4645         SLIB_INSTALL_LINKS=
4646         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4647         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4648         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4649         objformat="win32"
4650         ranlib=:
4651         enable dos_paths
4652         check_ldflags -Wl,--nxcompat,--dynamicbase
4653         # Lets work around some stupidity in binutils.
4654         # ld will strip relocations from executables even though we need them
4655         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4656         # however ld then forgets what the entry point should be (oops) so we
4657         # have to manually (re)set it.
4658         if enabled x86_32; then
4659             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4660         elif enabled x86_64; then
4661             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4662             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4663             # Set image base >4GB for extra entropy with HEASLR
4664             add_ldexeflags -Wl,--image-base,0x140000000
4665             append SHFLAGS -Wl,--image-base,0x180000000
4666         fi
4667         ;;
4668     win32|win64)
4669         disable symver
4670         if enabled shared; then
4671             # Link to the import library instead of the normal static library
4672             # for shared libs.
4673             LD_LIB='%.lib'
4674             # Cannot build both shared and static libs with MSVC or icl.
4675             disable static
4676         fi
4677         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4678         shlibdir_default="$bindir_default"
4679         SLIBPREF=""
4680         SLIBSUF=".dll"
4681         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4682         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4683         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4684         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4685         SLIB_INSTALL_LINKS=
4686         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4687         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4688         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4689         objformat="win32"
4690         ranlib=:
4691         enable dos_paths
4692         ;;
4693     cygwin*)
4694         target_os=cygwin
4695         shlibdir_default="$bindir_default"
4696         SLIBPREF="cyg"
4697         SLIBSUF=".dll"
4698         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4699         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4700         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4701         SLIB_INSTALL_LINKS=
4702         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4703         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4704         objformat="win32"
4705         enable dos_paths
4706         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4707         ;;
4708     *-dos|freedos|opendos)
4709         network_extralibs="-lsocket"
4710         objformat="coff"
4711         enable dos_paths
4712         add_cppflags -U__STRICT_ANSI__
4713         ;;
4714     linux)
4715         enable dv1394
4716         enable section_data_rel_ro
4717         ;;
4718     irix*)
4719         target_os=irix
4720         ranlib="echo ignoring ranlib"
4721         ;;
4722     os/2*)
4723         strip="lxlite -CS"
4724         objformat="aout"
4725         add_cppflags -D_GNU_SOURCE
4726         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4727         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4728         LIBSUF="_s.a"
4729         SLIBPREF=""
4730         SLIBSUF=".dll"
4731         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4732         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4733         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4734             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4735             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4736             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4737             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4738         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4739             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4740         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4741         SLIB_INSTALL_LINKS=
4742         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4743         enable dos_paths
4744         enable_weak os2threads
4745         ;;
4746     gnu/kfreebsd)
4747         add_cppflags -D_BSD_SOURCE
4748         ;;
4749     gnu)
4750         ;;
4751     qnx)
4752         add_cppflags -D_QNX_SOURCE
4753         network_extralibs="-lsocket"
4754         ;;
4755     symbian)
4756         SLIBSUF=".dll"
4757         enable dos_paths
4758         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4759         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4760         add_ldflags -Wl,--target1-abs,--no-undefined \
4761                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4762                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4763         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4764                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4765                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4766         ;;
4767     osf1)
4768         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4769         ;;
4770     minix)
4771         ;;
4772     plan9)
4773         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4774                      -D_REENTRANT_SOURCE        \
4775                      -D_RESEARCH_SOURCE         \
4776                      -DFD_SETSIZE=96            \
4777                      -DHAVE_SOCK_OPTS
4778         add_compat strtod.o strtod=avpriv_strtod
4779         network_extralibs='-lbsd'
4780         exeobjs=compat/plan9/main.o
4781         disable ffserver
4782         cp_f='cp'
4783         ;;
4784     none)
4785         ;;
4786     *)
4787         die "Unknown OS '$target_os'."
4788         ;;
4789 esac
4790
4791 # test if creating links works
4792 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4793 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4794 mkdir "$link_dest"
4795 $ln_s "$link_dest" "$link_name"
4796 touch "$link_dest/test_file"
4797 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4798     # create link to source path
4799     [ -e src ] && rm src
4800     $ln_s "$source_path" src
4801     source_link=src
4802 else
4803     # creating directory links doesn't work
4804     # fall back to using the full source path
4805     source_link="$source_path"
4806 fi
4807 # cleanup
4808 rm -r "$link_dest"
4809 rm -r "$link_name"
4810
4811 # determine libc flavour
4812
4813 probe_libc(){
4814     pfx=$1
4815     pfx_no_=${pfx%_}
4816     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4817     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4818         eval ${pfx}libc_type=uclibc
4819         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4820     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4821         eval ${pfx}libc_type=glibc
4822         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4823     # MinGW headers can be installed on Cygwin, so check for newlib first.
4824     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4825         eval ${pfx}libc_type=newlib
4826         add_${pfx}cppflags -U__STRICT_ANSI__
4827     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4828     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4829         eval ${pfx}libc_type=mingw64
4830         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4831             add_compat msvcrt/snprintf.o
4832             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4833         fi
4834         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4835         eval test \$${pfx_no_}cc_type = "gcc" &&
4836             add_${pfx}cppflags -D__printf__=__gnu_printf__
4837     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4838          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4839         eval ${pfx}libc_type=mingw32
4840         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4841             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4842             die "ERROR: MinGW32 runtime version must be >= 3.15."
4843         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4844         eval test \$${pfx_no_}cc_type = "gcc" &&
4845             add_${pfx}cppflags -D__printf__=__gnu_printf__
4846     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4847         eval ${pfx}libc_type=msvcrt
4848         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4849             if [ "$pfx" = host_ ]; then
4850                 add_host_cppflags -Dsnprintf=_snprintf
4851             else
4852                 add_compat strtod.o strtod=avpriv_strtod
4853                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4854                                              _snprintf=avpriv_snprintf  \
4855                                              vsnprintf=avpriv_vsnprintf
4856             fi
4857         fi
4858         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4859         # 0x601 by default unless something else is set by the user.
4860         # This can easily lead to us detecting functions only present
4861         # in such new versions and producing binaries requiring windows 7.0.
4862         # Therefore explicitly set the default to XP unless the user has
4863         # set something else on the command line.
4864         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4865         # family. For these cases, configure is free to use any functions
4866         # found in the SDK headers by default. (Alternatively, we could force
4867         # _WIN32_WINNT to 0x0602 in that case.)
4868         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4869             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4870 #ifdef WINAPI_FAMILY
4871 #include <winapifamily.h>
4872 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4873 #error not desktop
4874 #endif
4875 #endif
4876 EOF
4877     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4878         eval ${pfx}libc_type=klibc
4879     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4880         eval ${pfx}libc_type=bionic
4881     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4882         eval ${pfx}libc_type=solaris
4883         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4884     fi
4885     check_${pfx}cc <<EOF
4886 #include <time.h>
4887 void *v = localtime_r;
4888 EOF
4889 test "$?" != 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
4890 #include <time.h>
4891 void *v = localtime_r;
4892 EOF
4893
4894 }
4895
4896 probe_libc
4897 test -n "$libc_type" && enable libc_$libc_type
4898 probe_libc host_
4899 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4900
4901 case $libc_type in
4902     bionic)
4903         add_compat strtod.o strtod=avpriv_strtod
4904         ;;
4905 esac
4906
4907 # hacks for compiler/libc/os combinations
4908
4909 if enabled_all tms470 libc_glibc; then
4910     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4911     add_cppflags -D__USER_LABEL_PREFIX__=
4912     add_cppflags -D__builtin_memset=memset
4913     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4914     add_cflags   -pds=48    # incompatible redefinition of macro
4915 fi
4916
4917 if enabled_all ccc libc_glibc; then
4918     add_ldflags -Wl,-z,now  # calls to libots crash without this
4919 fi
4920
4921 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4922     add_cppflags '-I\$(SRC_PATH)/compat/float'
4923
4924 esc(){
4925     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4926 }
4927
4928 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4929
4930 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4931
4932 set_default libdir
4933 : ${shlibdir_default:="$libdir"}
4934 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4935
4936 set_default $PATHS_LIST
4937 set_default nm
4938
4939 # we need to build at least one lib type
4940 if ! enabled_any static shared; then
4941     cat <<EOF
4942 At least one library type must be built.
4943 Specify --enable-static to build the static libraries or --enable-shared to
4944 build the shared libraries as well. To only build the shared libraries specify
4945 --disable-static in addition to --enable-shared.
4946 EOF
4947     exit 1;
4948 fi
4949
4950 die_license_disabled() {
4951     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4952 }
4953
4954 die_license_disabled_gpl() {
4955     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4956 }
4957
4958 die_license_disabled gpl frei0r
4959 die_license_disabled gpl libcdio
4960 die_license_disabled gpl librubberband
4961 die_license_disabled gpl libsmbclient
4962 die_license_disabled gpl libutvideo
4963 die_license_disabled gpl libvidstab
4964 die_license_disabled gpl libx264
4965 die_license_disabled gpl libx265
4966 die_license_disabled gpl libxavs
4967 die_license_disabled gpl libxvid
4968 die_license_disabled gpl x11grab
4969
4970 die_license_disabled nonfree cuda
4971 die_license_disabled nonfree libfaac
4972 die_license_disabled nonfree libnpp
4973 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4974 enabled gpl && die_license_disabled_gpl nonfree openssl
4975
4976 die_license_disabled version3 gmp
4977 die_license_disabled version3 libopencore_amrnb
4978 die_license_disabled version3 libopencore_amrwb
4979 die_license_disabled version3 libsmbclient
4980 die_license_disabled version3 libvo_amrwbenc
4981
4982 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4983
4984 disabled optimizations || check_cflags -fomit-frame-pointer
4985
4986 enable_weak_pic() {
4987     disabled pic && return
4988     enable pic
4989     add_cppflags -DPIC
4990     case "$target_os" in
4991     mingw*|cygwin*)
4992         ;;
4993     *)
4994         add_cflags -fPIC
4995         ;;
4996     esac
4997     add_asflags  -fPIC
4998 }
4999
5000 enabled pic && enable_weak_pic
5001
5002 check_cc <<EOF || die "Symbol mangling check failed."
5003 int ff_extern;
5004 EOF
5005 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5006 extern_prefix=${sym%%ff_extern*}
5007
5008 check_cc <<EOF && enable_weak inline_asm
5009 void foo(void) { __asm__ volatile ("" ::); }
5010 EOF
5011
5012 _restrict=
5013 for restrict_keyword in restrict __restrict__ __restrict; do
5014     check_cc <<EOF && _restrict=$restrict_keyword && break
5015 void foo(char * $restrict_keyword p);
5016 EOF
5017 done
5018
5019 check_cc <<EOF && enable pragma_deprecated
5020 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5021 EOF
5022
5023 check_cc <<EOF && enable attribute_packed
5024 struct { int x; } __attribute__((packed)) x;
5025 EOF
5026
5027 check_cc <<EOF && enable attribute_may_alias
5028 union { int x; } __attribute__((may_alias)) x;
5029 EOF
5030
5031 check_cc <<EOF || die "endian test failed"
5032 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5033 EOF
5034 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5035
5036 if ! enabled ppc64 || enabled bigendian; then
5037     disable vsx
5038 fi
5039
5040 check_gas() {
5041     log "check_gas using '$as' as AS"
5042     # :vararg is used on aarch64, arm and ppc altivec
5043     check_as <<EOF || return 1
5044 .macro m n, y:vararg=0
5045 \n: .int \y
5046 .endm
5047 m x
5048 EOF
5049     # .altmacro is only used in arm asm
5050     ! enabled arm || check_as <<EOF || return 1
5051 .altmacro
5052 EOF
5053     enable gnu_as
5054     return 0
5055 }
5056
5057 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5058     nogas=:
5059     enabled_any arm aarch64 && nogas=die
5060     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5061     as_noop=-v
5062
5063     case $as_type in
5064         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5065         gcc)  gaspp_as_type=gas ;;
5066         *)    gaspp_as_type=$as_type ;;
5067     esac
5068
5069     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5070
5071     test "${as#*gas-preprocessor.pl}" != "$as" ||
5072     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5073         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5074
5075     if ! check_gas ; then
5076         as=${gas:=$as}
5077         check_gas || \
5078             $nogas "GNU assembler not found, install/update gas-preprocessor"
5079     fi
5080
5081     check_as <<EOF && enable as_func
5082 .func test
5083 .endfunc
5084 EOF
5085 fi
5086
5087 check_inline_asm inline_asm_labels '"1:\n"'
5088
5089 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5090
5091 if enabled aarch64; then
5092     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5093     # internal assembler in clang 3.3 does not support this instruction
5094     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5095     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5096
5097     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5098
5099 elif enabled alpha; then
5100
5101     check_cflags -mieee
5102
5103 elif enabled arm; then
5104
5105     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5106
5107     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5108 float func(float a, float b){ return a+b; }
5109 EOF
5110
5111     enabled thumb && check_cflags -mthumb || check_cflags -marm
5112
5113     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5114         enable vfp_args
5115     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5116         enable vfp_args
5117     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5118         case "${cross_prefix:-$cc}" in
5119             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5120             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5121 __asm__ (".eabi_attribute 28, 1");
5122 int main(void) { return 0; }
5123 EOF
5124         esac
5125         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5126     fi
5127
5128     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5129     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5130     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5131     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5132     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5133     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5134     enabled setend  && check_insn setend  'setend be'
5135
5136     [ $target_os = linux ] || [ $target_os = android ] ||
5137         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5138             $ARCH_EXT_LIST_ARM
5139
5140     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5141
5142     check_as <<EOF && enable as_dn_directive
5143 ra .dn d0.i16
5144 .unreq ra
5145 EOF
5146
5147     # llvm's integrated assembler supports .object_arch from llvm 3.5
5148     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5149 .object_arch armv4
5150 EOF
5151
5152     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5153
5154 elif enabled mips; then
5155
5156     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5157     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5158     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5159
5160     # Enable minimum ISA based on selected options
5161     if enabled mips64; then
5162         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5163         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5164         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5165     else
5166         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5167         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5168         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5169         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5170     fi
5171
5172     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5173     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5174     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5175     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5176     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5177
5178 elif enabled parisc; then
5179
5180     if enabled gcc; then
5181         case $($cc -dumpversion) in
5182             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5183         esac
5184     fi
5185
5186 elif enabled ppc; then
5187
5188     enable local_aligned_8 local_aligned_16 local_aligned_32
5189
5190     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5191     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5192     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5193     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5194
5195     # AltiVec flags: The FSF version of GCC differs from the Apple version
5196     if enabled altivec; then
5197         check_cflags -maltivec -mabi=altivec &&
5198         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5199         check_cflags -faltivec
5200
5201         # check if our compiler supports Motorola AltiVec C API
5202         check_cc <<EOF || disable altivec
5203 $inc_altivec_h
5204 int main(void) {
5205     vector signed int v1 = (vector signed int) { 0 };
5206     vector signed int v2 = (vector signed int) { 1 };
5207     v1 = vec_add(v1, v2);
5208     return 0;
5209 }
5210 EOF
5211
5212         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5213     fi
5214
5215     if enabled vsx; then
5216         check_cflags -mvsx &&
5217         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5218     fi
5219
5220     if enabled power8; then
5221         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5222     fi
5223
5224 elif enabled x86; then
5225
5226     check_builtin rdtsc    intrin.h   "__rdtsc()"
5227     check_builtin mm_empty mmintrin.h "_mm_empty()"
5228
5229     enable local_aligned_8 local_aligned_16 local_aligned_32
5230
5231     # check whether EBP is available on x86
5232     # As 'i' is stored on the stack, this program will crash
5233     # if the base pointer is used to access it because the
5234     # base pointer is cleared in the inline assembly code.
5235     check_exec_crash <<EOF && enable ebp_available
5236 volatile int i=0;
5237 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5238 return i;
5239 EOF
5240
5241     # check whether EBX is available on x86
5242     check_inline_asm ebx_available '""::"b"(0)' &&
5243         check_inline_asm ebx_available '"":::"%ebx"'
5244
5245     # check whether xmm clobbers are supported
5246     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5247
5248     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5249         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5250
5251     # check whether binutils is new enough to compile SSSE3/MMXEXT
5252     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5253     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5254
5255     if ! disabled_any asm mmx yasm; then
5256         if check_cmd $yasmexe --version; then
5257             enabled x86_64 && yasm_extra="-m amd64"
5258             yasm_debug="-g dwarf2"
5259         elif check_cmd nasm -v; then
5260             yasmexe=nasm
5261             yasm_debug="-g -F dwarf"
5262             if enabled x86_64; then
5263                 case "$objformat" in
5264                     elf)   objformat=elf64 ;;
5265                     win32) objformat=win64 ;;
5266                 esac
5267             fi
5268         fi
5269
5270         YASMFLAGS="-f $objformat $yasm_extra"
5271         enabled pic               && append YASMFLAGS "-DPIC"
5272         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5273         case "$objformat" in
5274             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5275         esac
5276
5277         check_yasm "movbe ecx, [5]" && enable yasm ||
5278             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5279         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5280         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5281         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5282         check_yasm "CPU amdnop" || disable cpunop
5283     fi
5284
5285     case "$cpu" in
5286         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5287             disable fast_clz
5288         ;;
5289     esac
5290
5291 fi
5292
5293 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5294
5295 check_ldflags -Wl,--as-needed
5296 check_ldflags -Wl,-z,noexecstack
5297
5298 if check_func dlopen; then
5299     ldl=
5300 elif check_func dlopen -ldl; then
5301     ldl=-ldl
5302 fi
5303
5304 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5305 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5306 frei0r_filter_extralibs='$ldl'
5307 frei0r_src_filter_extralibs='$ldl'
5308 ladspa_filter_extralibs='$ldl'
5309 nvenc_encoder_extralibs='$ldl'
5310 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5311 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5312
5313 if ! disabled network; then
5314     check_func getaddrinfo $network_extralibs
5315     check_func inet_aton $network_extralibs
5316
5317     check_type netdb.h "struct addrinfo"
5318     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5319     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5320     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5321     check_type poll.h "struct pollfd"
5322     check_type netinet/sctp.h "struct sctp_event_subscribe"
5323     check_struct "sys/socket.h" "struct msghdr" msg_flags
5324     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5325     check_type netinet/in.h "struct sockaddr_in6"
5326     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5327     check_type "sys/types.h sys/socket.h" socklen_t
5328
5329     # Prefer arpa/inet.h over winsock2
5330     if check_header arpa/inet.h ; then
5331         check_func closesocket
5332     elif check_header winsock2.h ; then
5333         check_func_headers winsock2.h closesocket -lws2 &&
5334             network_extralibs="-lws2" ||
5335         { check_func_headers winsock2.h closesocket -lws2_32 &&
5336             network_extralibs="-lws2_32"; } || disable winsock2_h network
5337         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5338
5339         check_type ws2tcpip.h socklen_t
5340         check_type ws2tcpip.h "struct addrinfo"
5341         check_type ws2tcpip.h "struct group_source_req"
5342         check_type ws2tcpip.h "struct ip_mreq_source"
5343         check_type ws2tcpip.h "struct ipv6_mreq"
5344         check_type winsock2.h "struct pollfd"
5345         check_struct winsock2.h "struct sockaddr" sa_len
5346         check_type ws2tcpip.h "struct sockaddr_in6"
5347         check_type ws2tcpip.h "struct sockaddr_storage"
5348     else
5349         disable network
5350     fi
5351 fi
5352
5353 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5354 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5355 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5356 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5357 check_builtin sarestart signal.h "SA_RESTART"
5358 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5359 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5360 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5361 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5362
5363 case "$custom_allocator" in
5364     jemalloc)
5365         # jemalloc by default does not use a prefix
5366         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5367     ;;
5368     tcmalloc)
5369         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5370         malloc_prefix=tc_
5371     ;;
5372 esac
5373
5374 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5375 check_func  ${malloc_prefix}memalign            && enable memalign
5376 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5377
5378 check_func  access
5379 check_func  arc4random
5380 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5381 check_func  fcntl
5382 check_func  fork
5383 check_func  gethrtime
5384 check_func  getopt
5385 check_func  getrusage
5386 check_func  gettimeofday
5387 check_func  isatty
5388 check_func  mach_absolute_time
5389 check_func  mkstemp
5390 check_func  mmap
5391 check_func  mprotect
5392 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5393 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5394 check_func  sched_getaffinity
5395 check_func  setrlimit
5396 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5397 check_func  strerror_r
5398 check_func  sysconf
5399 check_func  sysctl
5400 check_func  usleep
5401
5402 check_func_headers conio.h kbhit
5403 check_func_headers io.h setmode
5404 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5405 check_func_headers stdlib.h getenv
5406 check_func_headers sys/stat.h lstat
5407
5408 check_func_headers windows.h CoTaskMemFree -lole32
5409 check_func_headers windows.h GetProcessAffinityMask
5410 check_func_headers windows.h GetProcessTimes
5411 check_func_headers windows.h GetSystemTimeAsFileTime
5412 check_func_headers windows.h MapViewOfFile
5413 check_func_headers windows.h PeekNamedPipe
5414 check_func_headers windows.h SetConsoleTextAttribute
5415 check_func_headers windows.h SetConsoleCtrlHandler
5416 check_func_headers windows.h Sleep
5417 check_func_headers windows.h VirtualAlloc
5418 check_struct windows.h "CONDITION_VARIABLE" Ptr
5419 check_func_headers glob.h glob
5420 enabled xlib &&
5421     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5422
5423 check_header AudioToolbox/AudioToolbox.h
5424 check_header direct.h
5425 check_header dirent.h
5426 check_header dlfcn.h
5427 check_header d3d11.h
5428 check_header dxva.h
5429 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5430 check_header io.h
5431 check_header libcrystalhd/libcrystalhd_if.h
5432 check_header mach/mach_time.h
5433 check_header malloc.h
5434 check_header net/udplite.h
5435 check_header poll.h
5436 check_header sys/mman.h
5437 check_header sys/param.h
5438 check_header sys/resource.h
5439 check_header sys/select.h
5440 check_header sys/time.h
5441 check_header sys/un.h
5442 check_header termios.h
5443 check_header unistd.h
5444 check_header valgrind/valgrind.h
5445 check_header vdpau/vdpau.h
5446 check_header vdpau/vdpau_x11.h
5447 check_header VideoDecodeAcceleration/VDADecoder.h
5448 check_header VideoToolbox/VideoToolbox.h
5449 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5450 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5451 check_header windows.h
5452 check_header X11/extensions/XvMClib.h
5453 check_header asm/types.h
5454
5455 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5456 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5457 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5458 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5459
5460 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5461
5462 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5463 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5464 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5465 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5466 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5467
5468 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5469 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5470 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5471
5472 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5473
5474 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5475
5476 if ! disabled w32threads && ! enabled pthreads; then
5477     check_func_headers "windows.h process.h" _beginthreadex &&
5478         enable w32threads || disable w32threads
5479     if ! enabled w32threads && enabled winrt; then
5480         check_func_headers "windows.h" CreateThread &&
5481             enable w32threads || disable w32threads
5482     fi
5483 fi
5484
5485 # check for some common methods of building with pthread support
5486 # do this before the optional library checks as some of them require pthreads
5487 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5488     enable pthreads
5489     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5490         add_cflags -pthread
5491         add_extralibs -pthread
5492     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5493         add_cflags -pthreads
5494         add_extralibs -pthreads
5495     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5496         add_cflags -ldl -pthread
5497         add_extralibs -ldl -pthread
5498     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5499         add_extralibs -lpthreadGC2
5500     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5501         :
5502     elif ! check_func pthread_join && ! check_func pthread_create; then
5503         disable pthreads
5504     fi
5505     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5506 fi
5507
5508
5509 if enabled pthreads; then
5510   check_func pthread_cancel
5511 fi
5512
5513 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5514 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5515 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5516
5517 check_lib math.h sin -lm && LIBM="-lm"
5518 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5519
5520 atan2f_args=2
5521 copysign_args=2
5522 hypot_args=2
5523 ldexpf_args=2
5524 powf_args=2
5525
5526 for func in $MATH_FUNCS; do
5527     eval check_mathfunc $func \${${func}_args:-1}
5528 done
5529
5530 for func in $COMPLEX_FUNCS; do
5531     eval check_complexfunc $func \${${func}_args:-1}
5532 done
5533
5534 # these are off by default, so fail if requested and not available
5535 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5536 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5537                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5538 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5539                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5540                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5541 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5542                                die "ERROR: CUDA not found"; }
5543 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5544 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5545 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5546 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5547 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5548 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5549 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5550 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5551                                check_lib2 "dlfcn.h" dlopen -ldl; }
5552 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5553 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5554 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5555 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5556 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5557 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5558                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5559                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5560 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5561 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5562 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5563                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5564                                  warn "using libfdk without pkg-config"; } }
5565 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"
5566 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5567 enabled fontconfig        && enable libfontconfig
5568 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5569 enabled libfreetype       && require_libfreetype
5570 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5571 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5572 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5573                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5574                                done || die "ERROR: libgsm not found"; }
5575 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5576 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5577 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5578 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5579 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5580 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5581 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5582 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5583 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5584 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5585                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5586                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5587                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5588 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5589 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5590                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5591                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5592                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5593                                die "ERROR: libopenjpeg not found"; }
5594 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5595 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5596 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5597 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5598 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5599 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5600 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5601                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5602 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5603 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5604 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5605 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5606 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5607 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5608 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5609                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5610                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5611 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5612 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5613 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5614 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5615 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5616
5617 enabled libvpx            && {
5618     enabled libvpx_vp8_decoder && {
5619         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5620             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5621                 die "ERROR: libvpx decoder version must be >=0.9.1";
5622     }
5623     enabled libvpx_vp8_encoder && {
5624         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5625             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5626                 die "ERROR: libvpx encoder version must be >=0.9.7";
5627     }
5628     enabled libvpx_vp9_decoder && {
5629         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5630             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5631                 disable libvpx_vp9_decoder;
5632     }
5633     enabled libvpx_vp9_encoder && {
5634         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5635             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5636                 disable libvpx_vp9_encoder;
5637     }
5638     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5639         die "libvpx enabled but no supported decoders found"
5640     fi
5641 }
5642
5643 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5644 enabled libwebp           && {
5645     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5646     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5647 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5648                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5649                                  warn "using libx264 without pkg-config"; } } &&
5650                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5651                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5652                              { check_cpp_condition x264.h "X264_MPEG2" &&
5653                                enable libx262; }
5654 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5655                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5656                                die "ERROR: libx265 version must be >= 68."; }
5657 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5658 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5659 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5660 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5661 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5662                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5663                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5664 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5665 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5666                                 { ! enabled cross_compile && {
5667                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5668                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5669                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5670                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5671                                die "ERROR: mmal not found"; }
5672 enabled mmal &&
5673     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5674      die "ERROR: mmal firmware headers too old")
5675
5676 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5677 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5678                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5679                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5680                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5681 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5682                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5683                                die "ERROR: openal not found"; } &&
5684                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5685                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5686 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5687                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5688                                die "ERROR: opencl not found"; } &&
5689                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5690                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5691                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5692 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5693                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5694                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5695                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5696                                die "ERROR: opengl not found."
5697                              }
5698 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5699                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5700                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5701                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5702                                die "ERROR: openssl not found"; }
5703 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5704
5705 # libdc1394 check
5706 if enabled libdc1394; then
5707     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5708         enable libdc1394_2; } ||
5709     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5710         enable libdc1394_1; } ||
5711     die "ERROR: No version of libdc1394 found "
5712 fi
5713
5714 if enabled gcrypt; then
5715     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5716     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5717         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5718         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5719         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5720             die "ERROR: gcrypt not found"
5721         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5722     else
5723         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5724     fi
5725 fi
5726
5727 if ! disabled sdl; then
5728     SDL_CONFIG="${cross_prefix}sdl-config"
5729     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5730         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5731         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5732         enable sdl
5733     else
5734         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5735             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5736             sdl_libs=$("${SDL_CONFIG}" --libs)
5737             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5738             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5739             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5740             enable sdl
5741         elif enabled sdl ; then
5742             die "ERROR: SDL not found"
5743         else
5744             disable sdl
5745         fi
5746     fi
5747     if test $target_os = "mingw32"; then
5748         sdl_libs="$sdl_libs -mconsole"
5749     fi
5750 fi
5751 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5752
5753 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5754     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5755     enable securetransport; }
5756
5757 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5758                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5759
5760 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5761 enabled makeinfo \
5762     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5763     && enable makeinfo_html || disable makeinfo_html
5764 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5765 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5766 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5767 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5768
5769 check_header linux/fb.h
5770 check_header linux/videodev.h
5771 check_header linux/videodev2.h
5772 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5773
5774 check_header sys/videoio.h
5775 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5776
5777 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5778 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5779 # w32api 3.12 had it defined wrong
5780 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5781
5782 check_type "dshow.h" IBaseFilter
5783
5784 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5785 { check_header dev/bktr/ioctl_meteor.h &&
5786   check_header dev/bktr/ioctl_bt848.h; } ||
5787 { check_header machine/ioctl_meteor.h &&
5788   check_header machine/ioctl_bt848.h; } ||
5789 { check_header dev/video/meteor/ioctl_meteor.h &&
5790   check_header dev/video/bktr/ioctl_bt848.h; } ||
5791 check_header dev/ic/bt8xx.h
5792
5793 check_header sndio.h
5794 if check_struct sys/soundcard.h audio_buf_info bytes; then
5795     enable_safe sys/soundcard.h
5796 else
5797     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5798     #include <sys/soundcard.h>
5799     audio_buf_info abc;
5800 EOF
5801 fi
5802 check_header soundcard.h
5803
5804 enabled_any alsa_indev alsa_outdev &&
5805     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5806
5807 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5808     check_func jack_port_get_latency_range -ljack
5809
5810 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5811
5812 if enabled libcdio; then
5813     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5814     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5815     die "ERROR: No usable libcdio/cdparanoia found"
5816 fi
5817
5818 enabled xlib &&
5819     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5820
5821 if ! disabled libxcb; then
5822     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5823         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5824     } && disable x11grab && enable libxcb
5825
5826 if enabled libxcb; then
5827     disabled libxcb_shm || {
5828         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5829             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5830         } && check_header sys/shm.h && enable libxcb_shm; }
5831
5832     disabled libxcb_xfixes || {
5833         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5834             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5835         } && enable libxcb_xfixes; }
5836
5837     disabled libxcb_shape || {
5838         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5839             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5840         } && enable libxcb_shape; }
5841
5842     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5843     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5844 fi
5845 fi
5846
5847 if enabled x11grab; then
5848     enabled xlib || die "ERROR: Xlib not found"
5849     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5850     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5851 fi
5852
5853 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5854
5855 enabled dxva2api_h &&
5856     check_cc <<EOF && enable dxva2api_cobj
5857 #define _WIN32_WINNT 0x0600
5858 #define COBJMACROS
5859 #include <windows.h>
5860 #include <d3d9.h>
5861 #include <dxva2api.h>
5862 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5863 EOF
5864
5865 enabled vaapi &&
5866     check_lib va/va.h vaInitialize -lva ||
5867     disable vaapi
5868
5869 enabled vaapi &&
5870     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5871     disable vaapi
5872
5873 enabled vaapi && enabled xlib &&
5874     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5875     enable vaapi_x11
5876
5877 enabled vdpau &&
5878     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5879     disable vdpau
5880
5881 enabled vdpau && enabled xlib &&
5882     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5883     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5884     enable vdpau_x11
5885
5886 # Funny iconv installations are not unusual, so check it after all flags have been set
5887 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5888
5889 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5890
5891 # add some useful compiler flags if supported
5892 check_cflags -Wdeclaration-after-statement
5893 check_cflags -Wall
5894 check_cflags -Wdisabled-optimization
5895 check_cflags -Wpointer-arith
5896 check_cflags -Wredundant-decls
5897 check_cflags -Wwrite-strings
5898 check_cflags -Wtype-limits
5899 check_cflags -Wundef
5900 check_cflags -Wmissing-prototypes
5901 check_cflags -Wno-pointer-to-int-cast
5902 check_cflags -Wstrict-prototypes
5903 check_cflags -Wempty-body
5904 enabled extra_warnings && check_cflags -Winline
5905 enabled extra_warnings && check_cflags -Wcast-qual
5906
5907 check_disable_warning(){
5908     warning_flag=-W${1#-Wno-}
5909     test_cflags $warning_flag && add_cflags $1
5910 }
5911
5912 check_disable_warning -Wno-parentheses
5913 check_disable_warning -Wno-switch
5914 check_disable_warning -Wno-format-zero-length
5915 check_disable_warning -Wno-pointer-sign
5916 check_disable_warning -Wno-unused-const-variable
5917
5918 # add some linker flags
5919 check_ldflags -Wl,--warn-common
5920 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5921 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5922 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5923 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5924
5925 # add some strip flags
5926 # -wN '..@*' is more selective than -x, but not available everywhere.
5927 check_stripflags -wN \'..@*\' || check_stripflags -x
5928
5929 enabled neon_clobber_test &&
5930     check_ldflags -Wl,--wrap,avcodec_open2              \
5931                   -Wl,--wrap,avcodec_decode_audio4      \
5932                   -Wl,--wrap,avcodec_decode_video2      \
5933                   -Wl,--wrap,avcodec_decode_subtitle2   \
5934                   -Wl,--wrap,avcodec_encode_audio2      \
5935                   -Wl,--wrap,avcodec_encode_video2      \
5936                   -Wl,--wrap,avcodec_encode_subtitle    \
5937                   -Wl,--wrap,swr_convert                \
5938                   -Wl,--wrap,avresample_convert ||
5939     disable neon_clobber_test
5940
5941 enabled xmm_clobber_test &&
5942     check_ldflags -Wl,--wrap,avcodec_open2              \
5943                   -Wl,--wrap,avcodec_decode_audio4      \
5944                   -Wl,--wrap,avcodec_decode_video2      \
5945                   -Wl,--wrap,avcodec_decode_subtitle2   \
5946                   -Wl,--wrap,avcodec_encode_audio2      \
5947                   -Wl,--wrap,avcodec_encode_video2      \
5948                   -Wl,--wrap,avcodec_encode_subtitle    \
5949                   -Wl,--wrap,swr_convert                \
5950                   -Wl,--wrap,avresample_convert         \
5951                   -Wl,--wrap,sws_scale ||
5952     disable xmm_clobber_test
5953
5954 echo "X { local: *; };" > $TMPV
5955 if test_ldflags -Wl,--version-script,$TMPV; then
5956     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5957 elif test_ldflags -Wl,-M,$TMPV; then
5958     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5959 fi
5960
5961 check_cc <<EOF && enable symver_asm_label
5962 void ff_foo(void) __asm__ ("av_foo@VERSION");
5963 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5964 EOF
5965     check_cc <<EOF && enable symver_gnu_asm
5966 __asm__(".symver ff_foo,av_foo@VERSION");
5967 void ff_foo(void) {}
5968 EOF
5969
5970 if [ -z "$optflags" ]; then
5971     if enabled small; then
5972         optflags=$cflags_size
5973     elif enabled optimizations; then
5974         optflags=$cflags_speed
5975     else
5976         optflags=$cflags_noopt
5977     fi
5978 fi
5979
5980 check_optflags(){
5981     check_cflags "$@"
5982     enabled lto && check_ldflags "$@"
5983 }
5984
5985
5986 if enabled lto; then
5987     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5988     check_cflags  -flto
5989     check_ldflags -flto $cpuflags
5990     disable inline_asm_direct_symbol_refs
5991 fi
5992
5993 check_optflags $optflags
5994 check_optflags -fno-math-errno
5995 check_optflags -fno-signed-zeros
5996
5997 enabled ftrapv && check_cflags -ftrapv
5998
5999 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6000 int x;
6001 EOF
6002
6003
6004 if enabled icc; then
6005     # Just warnings, no remarks
6006     check_cflags -w1
6007     # -wd: Disable following warnings
6008     # 144, 167, 556: -Wno-pointer-sign
6009     # 188: enumerated type mixed with another type
6010     # 1292: attribute "foo" ignored
6011     # 1419: external declaration in primary source file
6012     # 10006: ignoring unknown option -fno-signed-zeros
6013     # 10148: ignoring unknown option -Wno-parentheses
6014     # 10156: ignoring option '-W'; no argument required
6015     # 13200: No EMMS instruction before call to function
6016     # 13203: No EMMS instruction before return from function
6017     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6018     # 11030: Warning unknown option --as-needed
6019     # 10156: ignoring option '-export'; no argument required
6020     check_ldflags -wd10156,11030
6021     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6022     enable ebp_available
6023     # The test above does not test linking
6024     enabled lto && disable symver_asm_label
6025     if enabled x86_32; then
6026         icc_version=$($cc -dumpversion)
6027         test ${icc_version%%.*} -ge 11 &&
6028             check_cflags -falign-stack=maintain-16-byte ||
6029             disable aligned_stack
6030     fi
6031 elif enabled ccc; then
6032     # disable some annoying warnings
6033     add_cflags -msg_disable bitnotint
6034     add_cflags -msg_disable mixfuncvoid
6035     add_cflags -msg_disable nonstandcast
6036     add_cflags -msg_disable unsupieee
6037 elif enabled gcc; then
6038     case $gcc_basever in
6039         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
6040         4.*)                 check_optflags -fno-tree-vectorize ;;
6041         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
6042     esac
6043     check_cflags -Werror=format-security
6044     check_cflags -Werror=implicit-function-declaration
6045     check_cflags -Werror=missing-prototypes
6046     check_cflags -Werror=return-type
6047     check_cflags -Werror=vla
6048     check_cflags -Wformat
6049     check_cflags -fdiagnostics-color=auto
6050     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6051 elif enabled llvm_gcc; then
6052     check_cflags -mllvm -stack-alignment=16
6053 elif enabled clang; then
6054     check_cflags -mllvm -stack-alignment=16
6055     check_cflags -Qunused-arguments
6056     check_cflags -Werror=implicit-function-declaration
6057     check_cflags -Werror=missing-prototypes
6058     check_cflags -Werror=return-type
6059 elif enabled cparser; then
6060     add_cflags -Wno-missing-variable-declarations
6061     add_cflags -Wno-empty-statement
6062 elif enabled armcc; then
6063     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6064     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6065     # 2523: use of inline assembly is deprecated
6066     add_cflags -W${armcc_opt},--diag_suppress=2523
6067     add_cflags -W${armcc_opt},--diag_suppress=1207
6068     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6069     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6070     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6071     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6072 elif enabled tms470; then
6073     add_cflags -pds=824 -pds=837
6074     disable inline_asm
6075 elif enabled pathscale; then
6076     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6077 elif enabled_any msvc icl; then
6078     enabled x86_32 && disable aligned_stack
6079     enabled_all x86_32 debug && add_cflags -Oy-
6080     enabled debug && add_ldflags -debug
6081     enable pragma_deprecated
6082     if enabled icl; then
6083         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6084         # (correctly) on icl 13.x.
6085         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6086             add_cflags -Qansi-alias
6087         # Some inline asm is not compilable in debug
6088         if enabled debug; then
6089             disable ebp_available
6090             disable ebx_available
6091         fi
6092     fi
6093     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6094     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6095     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6096     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6097     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6098     # MSVC 2013 and newer can handle it fine.
6099     # If this declspec fails, force including stdlib.h before the restrict redefinition
6100     # happens in config.h.
6101     if [ $_restrict != restrict ]; then
6102         check_cc <<EOF || add_cflags -FIstdlib.h
6103 __declspec($_restrict) void* foo(int);
6104 EOF
6105     fi
6106     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6107 fi
6108
6109 for pfx in "" host_; do
6110     varname=${pfx%_}cc_type
6111     eval "type=\$$varname"
6112     if [ $type = "msvc" ]; then
6113         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6114 static inline int foo(int a) { return a; }
6115 EOF
6116     fi
6117 done
6118
6119 case $as_type in
6120     clang)
6121         add_asflags -Qunused-arguments
6122     ;;
6123 esac
6124
6125 case $ld_type in
6126     clang)
6127         check_ldflags -Qunused-arguments
6128     ;;
6129 esac
6130
6131 case $target_os in
6132     osf1)
6133         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6134     ;;
6135     plan9)
6136         add_cppflags -Dmain=plan9_main
6137     ;;
6138 esac
6139
6140 enable frame_thread_encoder
6141
6142 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6143
6144 check_deps $CONFIG_LIST       \
6145            $CONFIG_EXTRA      \
6146            $HAVE_LIST         \
6147            $ALL_COMPONENTS    \
6148
6149 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"
6150
6151
6152 if test $target_os = "haiku"; then
6153     disable memalign
6154     disable posix_memalign
6155 fi
6156
6157 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6158     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6159     enable dxva2_lib
6160
6161 ! enabled_any memalign posix_memalign aligned_malloc &&
6162     enabled simd_align_16 && enable memalign_hack
6163
6164 # add_dep lib dep
6165 # -> enable ${lib}_deps_${dep}
6166 # -> add $dep to ${lib}_deps only once
6167 add_dep() {
6168     lib=$1
6169     dep=$2
6170     enabled "${lib}_deps_${dep}" && return 0
6171     enable  "${lib}_deps_${dep}"
6172     prepend "${lib}_deps" $dep
6173 }
6174
6175 # merge deps lib components
6176 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6177 merge_deps() {
6178     lib=$1
6179     shift
6180     for comp in $*; do
6181         enabled $comp || continue
6182         eval "dep=\"\$${comp}_deps\""
6183         for d in $dep; do
6184             add_dep $lib $d
6185         done
6186     done
6187 }
6188
6189 merge_deps libavfilter $FILTER_LIST
6190
6191 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6192
6193 for thread in $THREADS_LIST; do
6194     if enabled $thread; then
6195         test -n "$thread_type" &&
6196             die "ERROR: Only one thread type must be selected." ||
6197             thread_type="$thread"
6198     fi
6199 done
6200
6201 enabled zlib && add_cppflags -DZLIB_CONST
6202
6203 # conditional library dependencies, in linking order
6204 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6205 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6206 enabled aresample_filter    && prepend avfilter_deps "swresample"
6207 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6208 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6209 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6210 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6211 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6212 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6213 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6214 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6215 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6216 enabled pan_filter          && prepend avfilter_deps "swresample"
6217 enabled pp_filter           && prepend avfilter_deps "postproc"
6218 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6219 enabled resample_filter && prepend avfilter_deps "avresample"
6220 enabled sab_filter          && prepend avfilter_deps "swscale"
6221 enabled scale_filter    && prepend avfilter_deps "swscale"
6222 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6223 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6224 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6225 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6226 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6227 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6228 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6229 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6230 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6231
6232 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6233
6234 enabled opus_decoder    && prepend avcodec_deps "swresample"
6235
6236 expand_deps(){
6237     lib_deps=${1}_deps
6238     eval "deps=\$$lib_deps"
6239     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6240     unique $lib_deps
6241 }
6242
6243 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6244 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6245
6246 map 'expand_deps $v' $LIBRARY_LIST
6247
6248 echo "install prefix            $prefix"
6249 echo "source path               $source_path"
6250 echo "C compiler                $cc"
6251 echo "C library                 $libc_type"
6252 if test "$host_cc" != "$cc"; then
6253     echo "host C compiler           $host_cc"
6254     echo "host C library            $host_libc_type"
6255 fi
6256 echo "ARCH                      $arch ($cpu)"
6257 if test "$build_suffix" != ""; then
6258     echo "build suffix              $build_suffix"
6259 fi
6260 if test "$progs_suffix" != ""; then
6261     echo "progs suffix              $progs_suffix"
6262 fi
6263 if test "$extra_version" != ""; then
6264     echo "version string suffix     $extra_version"
6265 fi
6266 echo "big-endian                ${bigendian-no}"
6267 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6268 if enabled x86; then
6269     echo "${yasmexe}                      ${yasm-no}"
6270     echo "MMX enabled               ${mmx-no}"
6271     echo "MMXEXT enabled            ${mmxext-no}"
6272     echo "3DNow! enabled            ${amd3dnow-no}"
6273     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6274     echo "SSE enabled               ${sse-no}"
6275     echo "SSSE3 enabled             ${ssse3-no}"
6276     echo "AESNI enabled             ${aesni-no}"
6277     echo "AVX enabled               ${avx-no}"
6278     echo "XOP enabled               ${xop-no}"
6279     echo "FMA3 enabled              ${fma3-no}"
6280     echo "FMA4 enabled              ${fma4-no}"
6281     echo "i686 features enabled     ${i686-no}"
6282     echo "CMOV is fast              ${fast_cmov-no}"
6283     echo "EBX available             ${ebx_available-no}"
6284     echo "EBP available             ${ebp_available-no}"
6285 fi
6286 if enabled aarch64; then
6287     echo "NEON enabled              ${neon-no}"
6288     echo "VFP enabled               ${vfp-no}"
6289 fi
6290 if enabled arm; then
6291     echo "ARMv5TE enabled           ${armv5te-no}"
6292     echo "ARMv6 enabled             ${armv6-no}"
6293     echo "ARMv6T2 enabled           ${armv6t2-no}"
6294     echo "VFP enabled               ${vfp-no}"
6295     echo "NEON enabled              ${neon-no}"
6296     echo "THUMB enabled             ${thumb-no}"
6297 fi
6298 if enabled mips; then
6299     echo "MIPS FPU enabled          ${mipsfpu-no}"
6300     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6301     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6302     echo "MIPS MSA enabled          ${msa-no}"
6303     echo "LOONGSON MMI enabled      ${mmi-no}"
6304 fi
6305 if enabled ppc; then
6306     echo "AltiVec enabled           ${altivec-no}"
6307     echo "VSX enabled               ${vsx-no}"
6308     echo "POWER8 enabled            ${power8-no}"
6309     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6310     echo "dcbzl available           ${dcbzl-no}"
6311 fi
6312 echo "debug symbols             ${debug-no}"
6313 echo "strip symbols             ${stripping-no}"
6314 echo "optimize for size         ${small-no}"
6315 echo "optimizations             ${optimizations-no}"
6316 echo "static                    ${static-no}"
6317 echo "shared                    ${shared-no}"
6318 echo "postprocessing support    ${postproc-no}"
6319 echo "new filter support        ${avfilter-no}"
6320 echo "network support           ${network-no}"
6321 echo "threading support         ${thread_type-no}"
6322 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6323 echo "SDL support               ${sdl-no}"
6324 echo "opencl enabled            ${opencl-no}"
6325 echo "JNI support               ${jni-no}"
6326 echo "texi2html enabled         ${texi2html-no}"
6327 echo "perl enabled              ${perl-no}"
6328 echo "pod2man enabled           ${pod2man-no}"
6329 echo "makeinfo enabled          ${makeinfo-no}"
6330 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6331 test -n "$random_seed" &&
6332     echo "random seed               ${random_seed}"
6333 echo
6334
6335 echo "Enabled programs:"
6336 print_enabled '' $PROGRAM_LIST | print_in_columns
6337 echo
6338
6339 echo "External libraries:"
6340 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6341 echo
6342
6343 echo "Libraries:"
6344 print_enabled '' $LIBRARY_LIST | print_in_columns
6345 echo
6346
6347 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6348     echo "Enabled ${type}s:"
6349     eval list=\$$(toupper $type)_LIST
6350     print_enabled '_*' $list | print_in_columns
6351     echo
6352 done
6353
6354 license="LGPL version 2.1 or later"
6355 if enabled nonfree; then
6356     license="nonfree and unredistributable"
6357 elif enabled gplv3; then
6358     license="GPL version 3 or later"
6359 elif enabled lgplv3; then
6360     license="LGPL version 3 or later"
6361 elif enabled gpl; then
6362     license="GPL version 2 or later"
6363 fi
6364
6365 echo "License: $license"
6366
6367 echo "Creating config.mak, config.h, and doc/config.texi..."
6368
6369 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6370
6371 enabled stripping || strip="echo skipping strip"
6372
6373 config_files="$TMPH config.mak doc/config.texi"
6374
6375 cat > config.mak <<EOF
6376 # Automatically generated by configure - do not modify!
6377 ifndef FFMPEG_CONFIG_MAK
6378 FFMPEG_CONFIG_MAK=1
6379 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6380 prefix=$prefix
6381 LIBDIR=\$(DESTDIR)$libdir
6382 SHLIBDIR=\$(DESTDIR)$shlibdir
6383 INCDIR=\$(DESTDIR)$incdir
6384 BINDIR=\$(DESTDIR)$bindir
6385 DATADIR=\$(DESTDIR)$datadir
6386 DOCDIR=\$(DESTDIR)$docdir
6387 MANDIR=\$(DESTDIR)$mandir
6388 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6389 INSTALL_NAME_DIR=$install_name_dir
6390 SRC_PATH=$source_path
6391 SRC_LINK=$source_link
6392 ifndef MAIN_MAKEFILE
6393 SRC_PATH:=\$(SRC_PATH:.%=..%)
6394 endif
6395 CC_IDENT=$cc_ident
6396 ARCH=$arch
6397 INTRINSICS=$intrinsics
6398 CC=$cc
6399 CXX=$cxx
6400 AS=$as
6401 OBJCC=$objcc
6402 LD=$ld
6403 DEPCC=$dep_cc
6404 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6405 DEPAS=$as
6406 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6407 YASM=$yasmexe
6408 DEPYASM=$yasmexe
6409 AR=$ar
6410 ARFLAGS=$arflags
6411 AR_O=$ar_o
6412 RANLIB=$ranlib
6413 STRIP=$strip
6414 CP=cp -p
6415 LN_S=$ln_s
6416 CPPFLAGS=$CPPFLAGS
6417 CFLAGS=$CFLAGS
6418 CXXFLAGS=$CXXFLAGS
6419 OBJCFLAGS=$OBJCFLAGS
6420 ASFLAGS=$ASFLAGS
6421 AS_C=$AS_C
6422 AS_O=$AS_O
6423 OBJCC_C=$OBJCC_C
6424 OBJCC_E=$OBJCC_E
6425 OBJCC_O=$OBJCC_O
6426 CC_C=$CC_C
6427 CC_E=$CC_E
6428 CC_O=$CC_O
6429 CXX_C=$CXX_C
6430 CXX_O=$CXX_O
6431 LD_O=$LD_O
6432 LD_LIB=$LD_LIB
6433 LD_PATH=$LD_PATH
6434 DLLTOOL=$dlltool
6435 WINDRES=$windres
6436 DEPWINDRES=$dep_cc
6437 DOXYGEN=$doxygen
6438 LDFLAGS=$LDFLAGS
6439 LDEXEFLAGS=$LDEXEFLAGS
6440 LDLIBFLAGS=$LDLIBFLAGS
6441 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6442 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6443 YASMFLAGS=$YASMFLAGS
6444 BUILDSUF=$build_suffix
6445 PROGSSUF=$progs_suffix
6446 FULLNAME=$FULLNAME
6447 LIBPREF=$LIBPREF
6448 LIBSUF=$LIBSUF
6449 LIBNAME=$LIBNAME
6450 SLIBPREF=$SLIBPREF
6451 SLIBSUF=$SLIBSUF
6452 EXESUF=$EXESUF
6453 EXTRA_VERSION=$extra_version
6454 CCDEP=$CCDEP
6455 CXXDEP=$CXXDEP
6456 CCDEP_FLAGS=$CCDEP_FLAGS
6457 ASDEP=$ASDEP
6458 ASDEP_FLAGS=$ASDEP_FLAGS
6459 CC_DEPFLAGS=$CC_DEPFLAGS
6460 AS_DEPFLAGS=$AS_DEPFLAGS
6461 HOSTCC=$host_cc
6462 HOSTLD=$host_ld
6463 HOSTCFLAGS=$host_cflags
6464 HOSTCPPFLAGS=$host_cppflags
6465 HOSTEXESUF=$HOSTEXESUF
6466 HOSTLDFLAGS=$host_ldflags
6467 HOSTLIBS=$host_libs
6468 DEPHOSTCC=$host_cc
6469 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6470 HOSTCCDEP=$HOSTCCDEP
6471 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6472 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6473 HOSTCC_C=$HOSTCC_C
6474 HOSTCC_O=$HOSTCC_O
6475 HOSTLD_O=$HOSTLD_O
6476 TARGET_EXEC=$target_exec $target_exec_args
6477 TARGET_PATH=$target_path
6478 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6479 CFLAGS-ffplay=$sdl_cflags
6480 ZLIB=$($ldflags_filter -lz)
6481 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6482 EXTRALIBS=$extralibs
6483 COMPAT_OBJS=$compat_objs
6484 EXEOBJS=$exeobjs
6485 INSTALL=$install
6486 LIBTARGET=${LIBTARGET}
6487 SLIBNAME=${SLIBNAME}
6488 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6489 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6490 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6491 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6492 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6493 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6494 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6495 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6496 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6497 NOREDZONE_FLAGS=$noredzone_flags
6498 EOF
6499
6500 get_version(){
6501     lcname=lib${1}
6502     name=$(toupper $lcname)
6503     file=$source_path/$lcname/version.h
6504     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6505     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6506     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6507     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6508     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6509     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6510 }
6511
6512 map 'get_version $v' $LIBRARY_LIST
6513
6514 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6515
6516 print_program_libs(){
6517     eval "program_libs=\$${1}_libs"
6518     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6519 }
6520
6521 map 'print_program_libs $v' $PROGRAM_LIST
6522
6523 cat > $TMPH <<EOF
6524 /* Automatically generated by configure - do not modify! */
6525 #ifndef FFMPEG_CONFIG_H
6526 #define FFMPEG_CONFIG_H
6527 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6528 #define FFMPEG_LICENSE "$(c_escape $license)"
6529 #define CONFIG_THIS_YEAR 2016
6530 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6531 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6532 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6533 #define av_restrict $_restrict
6534 #define EXTERN_PREFIX "${extern_prefix}"
6535 #define EXTERN_ASM ${extern_prefix}
6536 #define BUILDSUF "$build_suffix"
6537 #define SLIBSUF "$SLIBSUF"
6538 #define HAVE_MMX2 HAVE_MMXEXT
6539 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6540 EOF
6541
6542 test -n "$assert_level" &&
6543     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6544
6545 test -n "$malloc_prefix" &&
6546     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6547
6548 if enabled yasm; then
6549     append config_files $TMPASM
6550     printf '' >$TMPASM
6551 fi
6552
6553 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6554
6555
6556 mkdir -p doc
6557 mkdir -p tests
6558 mkdir -p tests/api
6559 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6560
6561 print_config ARCH_   "$config_files" $ARCH_LIST
6562 print_config HAVE_   "$config_files" $HAVE_LIST
6563 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6564                                      $CONFIG_EXTRA      \
6565                                      $ALL_COMPONENTS    \
6566
6567 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6568 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6569
6570 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6571 cp_if_changed $TMPH config.h
6572 touch .config
6573
6574 enabled yasm && cp_if_changed $TMPASM config.asm
6575
6576 cat > $TMPH <<EOF
6577 /* Generated by ffconf */
6578 #ifndef AVUTIL_AVCONFIG_H
6579 #define AVUTIL_AVCONFIG_H
6580 EOF
6581
6582 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6583
6584 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6585
6586 cp_if_changed $TMPH libavutil/avconfig.h
6587
6588 if test -n "$WARNINGS"; then
6589     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6590     enabled fatal_warnings && exit 1
6591 fi
6592
6593 # build pkg-config files
6594
6595 lib_version(){
6596     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6597 }
6598
6599 pkgconfig_generate(){
6600     name=$1
6601     shortname=${name#lib}${build_suffix}
6602     comment=$2
6603     version=$3
6604     libs=$4
6605     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6606     requires=${requires%, }
6607     enabled ${name#lib} || return 0
6608     mkdir -p $name
6609     cat <<EOF > $name/$name${build_suffix}.pc
6610 prefix=$prefix
6611 exec_prefix=\${prefix}
6612 libdir=$libdir
6613 includedir=$incdir
6614
6615 Name: $name
6616 Description: $comment
6617 Version: $version
6618 Requires: $(enabled shared || echo $requires)
6619 Requires.private: $(enabled shared && echo $requires)
6620 Conflicts:
6621 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6622 Libs.private: $(enabled shared && echo $libs)
6623 Cflags: -I\${includedir}
6624 EOF
6625
6626 mkdir -p doc/examples/pc-uninstalled
6627 includedir=${source_path}
6628 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6629     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6630 prefix=
6631 exec_prefix=
6632 libdir=\${pcfiledir}/../../../$name
6633 includedir=${includedir}
6634
6635 Name: $name
6636 Description: $comment
6637 Version: $version
6638 Requires: $requires
6639 Conflicts:
6640 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6641 Cflags: -I\${includedir}
6642 EOF
6643 }
6644
6645 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6646 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6647 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6648 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6649 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6650 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6651 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6652 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6653 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"