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-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 239   --enable-libopencv       enable video filtering via libopencv [no]
 240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 242   --enable-libopus         enable Opus de/encoding via libopus [no]
 243   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 244   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 250   --enable-libsoxr         enable Include libsoxr resampling [no]
 251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 252   --enable-libssh          enable SFTP protocol via libssh [no]
 253   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 254   --enable-libtheora       enable Theora encoding via libtheora [no]
 255   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 256   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 261                            native implementation exists [no]
 262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 264   --enable-libwebp         enable WebP encoding via libwebp [no]
 265   --enable-libx264         enable H.264 encoding via x264 [no]
 266   --enable-libx265         enable HEVC encoding via x265 [no]
 267   --enable-libxavs         enable AVS encoding via xavs [no]
 268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 272   --enable-libxvid         enable Xvid encoding via xvidcore,
 273                            native MPEG-4/Xvid encoder exists [no]
 274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 275   --enable-libzmq          enable message passing via libzmq [no]
 276   --enable-libzvbi         enable teletext support via libzvbi [no]
 277   --disable-lzma           disable lzma [autodetect]
 278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 279   --enable-mediacodec      enable Android MediaCodec support [no]
 280   --enable-mmal            enable decoding via MMAL [no]
 281   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 282   --enable-nvenc           enable NVIDIA NVENC support [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl            disable sdl [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 294   --enable-x11grab         enable X11 grabbing (legacy) [no]
 295   --disable-xlib           disable xlib [autodetect]
 296   --disable-zlib           disable zlib [autodetect]
 297
 298 Toolchain options:
 299   --arch=ARCH              select architecture [$arch]
 300   --cpu=CPU                select the minimum required CPU (affects
 301                            instruction selection, may crash on older CPUs)
 302   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 303   --progs-suffix=SUFFIX    program name suffix []
 304   --enable-cross-compile   assume a cross-compiler is used
 305   --sysroot=PATH           root of cross-build tree
 306   --sysinclude=PATH        location of cross-build system headers
 307   --target-os=OS           compiler targets OS [$target_os]
 308   --target-exec=CMD        command to run executables on target
 309   --target-path=DIR        path to view of build directory on target
 310   --target-samples=DIR     path to samples directory on target
 311   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 312   --toolchain=NAME         set tool defaults according to NAME
 313   --nm=NM                  use nm tool NM [$nm_default]
 314   --ar=AR                  use archive tool AR [$ar_default]
 315   --as=AS                  use assembler AS [$as_default]
 316   --strip=STRIP            use strip tool STRIP [$strip_default]
 317   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 318   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 319   --cc=CC                  use C compiler CC [$cc_default]
 320   --cxx=CXX                use C compiler CXX [$cxx_default]
 321   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 322   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 323   --ld=LD                  use linker LD [$ld_default]
 324   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 325   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 326   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 327   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 328   --host-cc=HOSTCC         use host C compiler HOSTCC
 329   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 330   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 331   --host-ld=HOSTLD         use host linker HOSTLD
 332   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 333   --host-libs=HLIBS        use libs HLIBS when linking for host
 334   --host-os=OS             compiler host OS [$target_os]
 335   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 336   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 337   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 338   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 339   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 340   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 341   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 342   --extra-version=STRING   version string suffix []
 343   --optflags=OPTFLAGS      override optimization-related compiler flags
 344   --build-suffix=SUFFIX    library name suffix []
 345   --enable-pic             build position-independent code
 346   --enable-thumb           compile for Thumb instruction set
 347   --enable-lto             use link-time optimization
 348   --env="ENV=override"     override the environment variables
 349
 350 Advanced options (experts only):
 351   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 352   --custom-allocator=NAME  use a supported custom allocator
 353   --disable-symver         disable symbol versioning
 354   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 355   --disable-safe-bitstream-reader
 356                            disable buffer boundary checking in bitreaders
 357                            (faster, but may crash)
 358   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 359   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 360
 361 Optimization options (experts only):
 362   --disable-asm            disable all assembly optimizations
 363   --disable-altivec        disable AltiVec optimizations
 364   --disable-vsx            disable VSX optimizations
 365   --disable-power8         disable POWER8 optimizations
 366   --disable-amd3dnow       disable 3DNow! optimizations
 367   --disable-amd3dnowext    disable 3DNow! extended optimizations
 368   --disable-mmx            disable MMX optimizations
 369   --disable-mmxext         disable MMXEXT optimizations
 370   --disable-sse            disable SSE optimizations
 371   --disable-sse2           disable SSE2 optimizations
 372   --disable-sse3           disable SSE3 optimizations
 373   --disable-ssse3          disable SSSE3 optimizations
 374   --disable-sse4           disable SSE4 optimizations
 375   --disable-sse42          disable SSE4.2 optimizations
 376   --disable-avx            disable AVX optimizations
 377   --disable-xop            disable XOP optimizations
 378   --disable-fma3           disable FMA3 optimizations
 379   --disable-fma4           disable FMA4 optimizations
 380   --disable-avx2           disable AVX2 optimizations
 381   --disable-aesni          disable AESNI optimizations
 382   --disable-armv5te        disable armv5te optimizations
 383   --disable-armv6          disable armv6 optimizations
 384   --disable-armv6t2        disable armv6t2 optimizations
 385   --disable-vfp            disable VFP optimizations
 386   --disable-neon           disable NEON optimizations
 387   --disable-inline-asm     disable use of inline assembly
 388   --disable-yasm           disable use of nasm/yasm assembly
 389   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 390   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 391   --disable-msa            disable MSA optimizations
 392   --disable-mipsfpu        disable floating point MIPS optimizations
 393   --disable-mmi            disable Loongson SIMD optimizations
 394   --disable-fast-unaligned consider unaligned accesses slow
 395
 396 Developer options (useful when working on FFmpeg itself):
 397   --disable-debug          disable debugging symbols
 398   --enable-debug=LEVEL     set the debug level [$debuglevel]
 399   --disable-optimizations  disable compiler optimizations
 400   --enable-extra-warnings  enable more compiler warnings
 401   --disable-stripping      disable stripping of executables and shared libraries
 402   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 403                            2 causes a slowdown at runtime.
 404   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 405   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 406                            leaks and errors, using the specified valgrind binary.
 407                            Cannot be combined with --target-exec
 408   --enable-ftrapv          Trap arithmetic overflows
 409   --samples=PATH           location of test samples for FATE, if not set use
 410                            \$FATE_SAMPLES at make invocation time.
 411   --enable-neon-clobber-test check NEON registers for clobbering (should be
 412                            used only for debugging purposes)
 413   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 414                            should be used only for debugging purposes)
 415   --enable-random          randomly enable/disable components
 416   --disable-random
 417   --enable-random=LIST     randomly enable/disable specific components or
 418   --disable-random=LIST    component groups. LIST is a comma-separated list
 419                            of NAME[:PROB] entries where NAME is a component
 420                            (group) and PROB the probability associated with
 421                            NAME (default 0.5).
 422   --random-seed=VALUE      seed value for --enable/disable-random
 423   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 424                            (only applies to --disable-optimizations builds)
 425
 426 NOTE: Object files are built at the place where configure is launched.
 427 EOF
 428   exit 0
 429 }
 430
 431 quotes='""'
 432 if test -t 1 && which tput >/dev/null 2>&1; then
 433     ncolors=$(tput colors)
 434     if test -n "$ncolors" && test $ncolors -ge 8; then
 435         bold_color=$(tput bold)
 436         warn_color=$(tput setaf 3)
 437         error_color=$(tput setaf 1)
 438         reset_color=$(tput sgr0)
 439     fi
 440     # 72 used instead of 80 since that's the default of pr
 441     ncols=$(tput cols)
 442 fi
 443 : ${ncols:=72}
 444
 445 log(){
 446     echo "$@" >> $logfile
 447 }
 448
 449 log_file(){
 450     log BEGIN $1
 451     pr -n -t $1 >> $logfile
 452     log END $1
 453 }
 454
 455 warn(){
 456     log "WARNING: $*"
 457     WARNINGS="${WARNINGS}WARNING: $*\n"
 458 }
 459
 460 die(){
 461     log "$@"
 462     echo "$error_color$bold_color$@$reset_color"
 463     cat <<EOF
 464
 465 If you think configure made a mistake, make sure you are using the latest
 466 version from Git.  If the latest version fails, report the problem to the
 467 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 468 EOF
 469     if disabled logging; then
 470         cat <<EOF
 471 Rerun configure with logging enabled (do not use --disable-logging), and
 472 include the log this produces with your report.
 473 EOF
 474     else
 475         cat <<EOF
 476 Include the log file "$logfile" produced by configure as this will help
 477 solve the problem.
 478 EOF
 479     fi
 480     exit 1
 481 }
 482
 483 # Avoid locale weirdness, besides we really just want to translate ASCII.
 484 toupper(){
 485     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 486 }
 487
 488 tolower(){
 489     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 490 }
 491
 492 c_escape(){
 493     echo "$*" | sed 's/["\\]/\\\0/g'
 494 }
 495
 496 sh_quote(){
 497     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 498     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 499     echo "$v"
 500 }
 501
 502 cleanws(){
 503     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 504 }
 505
 506 filter(){
 507     pat=$1
 508     shift
 509     for v; do
 510         eval "case $v in $pat) echo $v ;; esac"
 511     done
 512 }
 513
 514 filter_out(){
 515     pat=$1
 516     shift
 517     for v; do
 518         eval "case $v in $pat) ;; *) echo $v ;; esac"
 519     done
 520 }
 521
 522 map(){
 523     m=$1
 524     shift
 525     for v; do eval $m; done
 526 }
 527
 528 add_suffix(){
 529     suffix=$1
 530     shift
 531     for v; do echo ${v}${suffix}; done
 532 }
 533
 534 set_all(){
 535     value=$1
 536     shift
 537     for var in $*; do
 538         eval $var=$value
 539     done
 540 }
 541
 542 set_weak(){
 543     value=$1
 544     shift
 545     for var; do
 546         eval : \${$var:=$value}
 547     done
 548 }
 549
 550 sanitize_var_name(){
 551     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 552 }
 553
 554 set_safe(){
 555     var=$1
 556     shift
 557     eval $(sanitize_var_name "$var")='$*'
 558 }
 559
 560 get_safe(){
 561     eval echo \$$(sanitize_var_name "$1")
 562 }
 563
 564 pushvar(){
 565     for pvar in $*; do
 566         eval level=\${${pvar}_level:=0}
 567         eval ${pvar}_${level}="\$$pvar"
 568         eval ${pvar}_level=$(($level+1))
 569     done
 570 }
 571
 572 popvar(){
 573     for pvar in $*; do
 574         eval level=\${${pvar}_level:-0}
 575         test $level = 0 && continue
 576         eval level=$(($level-1))
 577         eval $pvar="\${${pvar}_${level}}"
 578         eval ${pvar}_level=$level
 579         eval unset ${pvar}_${level}
 580     done
 581 }
 582
 583 enable(){
 584     set_all yes $*
 585 }
 586
 587 disable(){
 588     set_all no $*
 589 }
 590
 591 enable_weak(){
 592     set_weak yes $*
 593 }
 594
 595 disable_weak(){
 596     set_weak no $*
 597 }
 598
 599 enable_safe(){
 600     for var; do
 601         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 602     done
 603 }
 604
 605 disable_safe(){
 606     for var; do
 607         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 608     done
 609 }
 610
 611 do_enable_deep(){
 612     for var; do
 613         enabled $var && continue
 614         eval sel="\$${var}_select"
 615         eval sgs="\$${var}_suggest"
 616         pushvar var sgs
 617         enable_deep $sel
 618         popvar sgs
 619         enable_deep_weak $sgs
 620         popvar var
 621     done
 622 }
 623
 624 enable_deep(){
 625     do_enable_deep $*
 626     enable $*
 627 }
 628
 629 enable_deep_weak(){
 630     for var; do
 631         disabled $var && continue
 632         pushvar var
 633         do_enable_deep $var
 634         popvar var
 635         enable_weak $var
 636     done
 637 }
 638
 639 enabled(){
 640     test "${1#!}" = "$1" && op='=' || op=!=
 641     eval test "x\$${1#!}" $op "xyes"
 642 }
 643
 644 disabled(){
 645     test "${1#!}" = "$1" && op='=' || op=!=
 646     eval test "x\$${1#!}" $op "xno"
 647 }
 648
 649 enabled_all(){
 650     for opt; do
 651         enabled $opt || return 1
 652     done
 653 }
 654
 655 disabled_all(){
 656     for opt; do
 657         disabled $opt || return 1
 658     done
 659 }
 660
 661 enabled_any(){
 662     for opt; do
 663         enabled $opt && return 0
 664     done
 665 }
 666
 667 disabled_any(){
 668     for opt; do
 669         disabled $opt && return 0
 670     done
 671     return 1
 672 }
 673
 674 set_default(){
 675     for opt; do
 676         eval : \${$opt:=\$${opt}_default}
 677     done
 678 }
 679
 680 is_in(){
 681     value=$1
 682     shift
 683     for var in $*; do
 684         [ $var = $value ] && return 0
 685     done
 686     return 1
 687 }
 688
 689 do_check_deps(){
 690     for cfg; do
 691         cfg="${cfg#!}"
 692         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 693         disabled ${cfg}_checking && continue
 694         enable ${cfg}_checking
 695         append allopts $cfg
 696
 697         eval dep_all="\$${cfg}_deps"
 698         eval dep_any="\$${cfg}_deps_any"
 699         eval dep_sel="\$${cfg}_select"
 700         eval dep_sgs="\$${cfg}_suggest"
 701         eval dep_ifa="\$${cfg}_if"
 702         eval dep_ifn="\$${cfg}_if_any"
 703
 704         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 705         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 706         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 707
 708         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 709         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 710         enabled_all  $dep_all || disable $cfg
 711         enabled_any  $dep_any || disable $cfg
 712         disabled_any $dep_sel && disable $cfg
 713
 714         if enabled $cfg; then
 715             enable_deep $dep_sel
 716             enable_deep_weak $dep_sgs
 717         fi
 718
 719         disable ${cfg}_checking
 720     done
 721 }
 722
 723 check_deps(){
 724     unset allopts
 725
 726     do_check_deps "$@"
 727
 728     for cfg in $allopts; do
 729         enabled $cfg || continue
 730         eval dep_extralibs="\$${cfg}_extralibs"
 731         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 732     done
 733 }
 734
 735 print_config(){
 736     pfx=$1
 737     files=$2
 738     shift 2
 739     map 'eval echo "$v \${$v:-no}"' "$@" |
 740     awk "BEGIN { split(\"$files\", files) }
 741         {
 742             c = \"$pfx\" toupper(\$1);
 743             v = \$2;
 744             sub(/yes/, 1, v);
 745             sub(/no/,  0, v);
 746             for (f in files) {
 747                 file = files[f];
 748                 if (file ~ /\\.h\$/) {
 749                     printf(\"#define %s %d\\n\", c, v) >>file;
 750                 } else if (file ~ /\\.asm\$/) {
 751                     printf(\"%%define %s %d\\n\", c, v) >>file;
 752                 } else if (file ~ /\\.mak\$/) {
 753                     n = -v ? \"\" : \"!\";
 754                     printf(\"%s%s=yes\\n\", n, c) >>file;
 755                 } else if (file ~ /\\.texi\$/) {
 756                     pre = -v ? \"\" : \"@c \";
 757                     yesno = \$2;
 758                     c2 = tolower(c);
 759                     gsub(/_/, \"-\", c2);
 760                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 761                 }
 762             }
 763         }"
 764 }
 765
 766 print_enabled(){
 767     suf=$1
 768     shift
 769     for v; do
 770         enabled $v && printf "%s\n" ${v%$suf};
 771     done
 772 }
 773
 774 append(){
 775     var=$1
 776     shift
 777     eval "$var=\"\$$var $*\""
 778 }
 779
 780 prepend(){
 781     var=$1
 782     shift
 783     eval "$var=\"$* \$$var\""
 784 }
 785
 786 unique(){
 787     var=$1
 788     uniq_list=""
 789     for tok in $(eval echo \$$var); do
 790         uniq_list="$(filter_out $tok $uniq_list) $tok"
 791     done
 792     eval "$var=\"${uniq_list}\""
 793 }
 794
 795 add_cppflags(){
 796     append CPPFLAGS "$@"
 797 }
 798
 799 add_cflags(){
 800     append CFLAGS $($cflags_filter "$@")
 801 }
 802
 803 add_cxxflags(){
 804     append CXXFLAGS $($cflags_filter "$@")
 805 }
 806
 807 add_asflags(){
 808     append ASFLAGS $($asflags_filter "$@")
 809 }
 810
 811 add_objcflags(){
 812     append OBJCFLAGS $($objcflags_filter "$@")
 813 }
 814
 815 add_ldflags(){
 816     append LDFLAGS $($ldflags_filter "$@")
 817 }
 818
 819 add_ldexeflags(){
 820     append LDEXEFLAGS $($ldflags_filter "$@")
 821 }
 822
 823 add_ldlibflags(){
 824     append LDLIBFLAGS $($ldflags_filter "$@")
 825 }
 826
 827 add_stripflags(){
 828     append ASMSTRIPFLAGS "$@"
 829 }
 830
 831 add_extralibs(){
 832     prepend extralibs $($ldflags_filter "$@")
 833 }
 834
 835 add_host_cppflags(){
 836     append host_cppflags "$@"
 837 }
 838
 839 add_host_cflags(){
 840     append host_cflags $($host_cflags_filter "$@")
 841 }
 842
 843 add_host_ldflags(){
 844     append host_ldflags $($host_ldflags_filter "$@")
 845 }
 846
 847 add_compat(){
 848     append compat_objs $1
 849     shift
 850     map 'add_cppflags -D$v' "$@"
 851 }
 852
 853 check_cmd(){
 854     log "$@"
 855     "$@" >> $logfile 2>&1
 856 }
 857
 858 check_stat(){
 859     log check_stat "$@"
 860     stat "$1" >> $logfile 2>&1
 861 }
 862
 863 cc_o(){
 864     eval printf '%s\\n' $CC_O
 865 }
 866
 867 cc_e(){
 868     eval printf '%s\\n' $CC_E
 869 }
 870
 871 check_cc(){
 872     log check_cc "$@"
 873     cat > $TMPC
 874     log_file $TMPC
 875     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 876 }
 877
 878 check_cxx(){
 879     log check_cxx "$@"
 880     cat > $TMPCPP
 881     log_file $TMPCPP
 882     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 883 }
 884
 885 check_objcc(){
 886     log check_objcc "$@"
 887     cat > $TMPM
 888     log_file $TMPM
 889     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 890 }
 891
 892 check_cpp(){
 893     log check_cpp "$@"
 894     cat > $TMPC
 895     log_file $TMPC
 896     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 897 }
 898
 899 as_o(){
 900     eval printf '%s\\n' $AS_O
 901 }
 902
 903 check_as(){
 904     log check_as "$@"
 905     cat > $TMPS
 906     log_file $TMPS
 907     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 908 }
 909
 910 check_inline_asm(){
 911     log check_inline_asm "$@"
 912     name="$1"
 913     code="$2"
 914     shift 2
 915     disable $name
 916     check_cc "$@" <<EOF && enable $name
 917 void foo(void){ __asm__ volatile($code); }
 918 EOF
 919 }
 920
 921 check_inline_asm_flags(){
 922     log check_inline_asm_flags "$@"
 923     name="$1"
 924     code="$2"
 925     flags=''
 926     shift 2
 927     while [ "$1" != "" ]; do
 928       append flags $1
 929       shift
 930     done;
 931     disable $name
 932     cat > $TMPC <<EOF
 933 void foo(void){ __asm__ volatile($code); }
 934 EOF
 935     log_file $TMPC
 936     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 937     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 938 }
 939
 940 check_insn(){
 941     log check_insn "$@"
 942     check_inline_asm ${1}_inline "\"$2\""
 943     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 944 }
 945
 946 check_yasm(){
 947     log check_yasm "$@"
 948     echo "$1" > $TMPS
 949     log_file $TMPS
 950     shift 1
 951     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 952 }
 953
 954 ld_o(){
 955     eval printf '%s\\n' $LD_O
 956 }
 957
 958 check_ld(){
 959     log check_ld "$@"
 960     type=$1
 961     shift 1
 962     flags=$(filter_out '-l*|*.so' $@)
 963     libs=$(filter '-l*|*.so' $@)
 964     check_$type $($cflags_filter $flags) || return
 965     flags=$($ldflags_filter $flags)
 966     libs=$($ldflags_filter $libs)
 967     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 968 }
 969
 970 print_include(){
 971     hdr=$1
 972     test "${hdr%.h}" = "${hdr}" &&
 973         echo "#include $hdr"    ||
 974         echo "#include <$hdr>"
 975 }
 976
 977 check_code(){
 978     log check_code "$@"
 979     check=$1
 980     headers=$2
 981     code=$3
 982     shift 3
 983     {
 984         for hdr in $headers; do
 985             print_include $hdr
 986         done
 987         echo "int main(void) { $code; return 0; }"
 988     } | check_$check "$@"
 989 }
 990
 991 check_cppflags(){
 992     log check_cppflags "$@"
 993     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 994 int x;
 995 EOF
 996 }
 997
 998 test_cflags(){
 999     log test_cflags "$@"
1000     set -- $($cflags_filter "$@")
1001     check_cc "$@" <<EOF
1002 int x;
1003 EOF
1004 }
1005
1006 check_cflags(){
1007     log check_cflags "$@"
1008     test_cflags "$@" && add_cflags "$@"
1009 }
1010
1011 check_cxxflags(){
1012     log check_cxxflags "$@"
1013     set -- $($cflags_filter "$@")
1014     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1015 int x;
1016 EOF
1017 }
1018
1019 test_objcflags(){
1020     log test_cflags "$@"
1021     set -- $($cflags_filter "$@")
1022     check_objcc "$@" <<EOF
1023 int x;
1024 EOF
1025 }
1026
1027 check_objcflags(){
1028     log check_cflags "$@"
1029     test_objcflags "$@" && add_objcflags "$@"
1030 }
1031
1032 test_ldflags(){
1033     log test_ldflags "$@"
1034     check_ld "cc" "$@" <<EOF
1035 int main(void){ return 0; }
1036 EOF
1037 }
1038
1039 check_ldflags(){
1040     log check_ldflags "$@"
1041     test_ldflags "$@" && add_ldflags "$@"
1042 }
1043
1044 test_stripflags(){
1045     log test_stripflags "$@"
1046     # call check_cc to get a fresh TMPO
1047     check_cc <<EOF
1048 int main(void) { return 0; }
1049 EOF
1050     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1051 }
1052
1053 check_stripflags(){
1054     log check_stripflags "$@"
1055     test_stripflags "$@" && add_stripflags "$@"
1056 }
1057
1058 check_header(){
1059     log check_header "$@"
1060     header=$1
1061     shift
1062     disable_safe $header
1063     check_cpp "$@" <<EOF && enable_safe $header
1064 #include <$header>
1065 int x;
1066 EOF
1067 }
1068
1069 check_header_objcc(){
1070     log check_header_objcc "$@"
1071     rm -f -- "$TMPO"
1072     header=$1
1073     shift
1074     disable_safe $header
1075     {
1076        echo "#include <$header>"
1077        echo "int main(void) { return 0; }"
1078     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1079 }
1080
1081 check_func(){
1082     log check_func "$@"
1083     func=$1
1084     shift
1085     disable $func
1086     check_ld "cc" "$@" <<EOF && enable $func
1087 extern int $func();
1088 int main(void){ $func(); }
1089 EOF
1090 }
1091
1092 check_complexfunc(){
1093     log check_complexfunc "$@"
1094     func=$1
1095     narg=$2
1096     shift 2
1097     test $narg = 2 && args="f, g" || args="f * I"
1098     disable $func
1099     check_ld "cc" "$@" <<EOF && enable $func
1100 #include <complex.h>
1101 #include <math.h>
1102 float foo(complex float f, complex float g) { return $func($args); }
1103 int main(void){ return (int) foo; }
1104 EOF
1105 }
1106
1107 check_mathfunc(){
1108     log check_mathfunc "$@"
1109     func=$1
1110     narg=$2
1111     shift 2
1112     test $narg = 2 && args="f, g" || args="f"
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 #include <math.h>
1116 float foo(float f, float g) { return $func($args); }
1117 int main(void){ return (int) foo; }
1118 EOF
1119 }
1120
1121 check_func_headers(){
1122     log check_func_headers "$@"
1123     headers=$1
1124     funcs=$2
1125     shift 2
1126     {
1127         for hdr in $headers; do
1128             print_include $hdr
1129         done
1130         for func in $funcs; do
1131             echo "long check_$func(void) { return (long) $func; }"
1132         done
1133         echo "int main(void) { return 0; }"
1134     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1135 }
1136
1137 check_class_headers_cpp(){
1138     log check_class_headers_cpp "$@"
1139     headers=$1
1140     classes=$2
1141     shift 2
1142     {
1143         for hdr in $headers; do
1144             echo "#include <$hdr>"
1145         done
1146         echo "int main(void) { "
1147         i=1
1148         for class in $classes; do
1149             echo "$class obj$i;"
1150             i=$(expr $i + 1)
1151         done
1152         echo "return 0; }"
1153     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1154 }
1155
1156 check_cpp_condition(){
1157     log check_cpp_condition "$@"
1158     header=$1
1159     condition=$2
1160     shift 2
1161     check_cpp "$@" <<EOF
1162 #include <$header>
1163 #if !($condition)
1164 #error "unsatisfied condition: $condition"
1165 #endif
1166 EOF
1167 }
1168
1169 check_lib(){
1170     log check_lib "$@"
1171     header="$1"
1172     func="$2"
1173     shift 2
1174     check_header $header && check_func $func "$@" && add_extralibs "$@"
1175 }
1176
1177 check_lib2(){
1178     log check_lib2 "$@"
1179     headers="$1"
1180     funcs="$2"
1181     shift 2
1182     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1183 }
1184
1185 check_lib_cpp(){
1186     log check_lib_cpp "$@"
1187     headers="$1"
1188     classes="$2"
1189     shift 2
1190     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1191 }
1192
1193 check_pkg_config(){
1194     log check_pkg_config "$@"
1195     pkgandversion="$1"
1196     pkg="${1%% *}"
1197     headers="$2"
1198     funcs="$3"
1199     shift 3
1200     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1201     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1202     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1203     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1204         set_safe "${pkg}_cflags" $pkg_cflags   &&
1205         set_safe "${pkg}_libs"   $pkg_libs
1206 }
1207
1208 check_exec(){
1209     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1210 }
1211
1212 check_exec_crash(){
1213     code=$(cat)
1214
1215     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1216     # are safe but may not be available everywhere.  Thus we use
1217     # raise(SIGTERM) instead.  The check is run in a subshell so we
1218     # can redirect the "Terminated" message from the shell.  SIGBUS
1219     # is not defined by standard C so it is used conditionally.
1220
1221     (check_exec "$@") >> $logfile 2>&1 <<EOF
1222 #include <signal.h>
1223 static void sighandler(int sig){
1224     raise(SIGTERM);
1225 }
1226 int foo(void){
1227     $code
1228 }
1229 int (*func_ptr)(void) = foo;
1230 int main(void){
1231     signal(SIGILL, sighandler);
1232     signal(SIGFPE, sighandler);
1233     signal(SIGSEGV, sighandler);
1234 #ifdef SIGBUS
1235     signal(SIGBUS, sighandler);
1236 #endif
1237     return func_ptr();
1238 }
1239 EOF
1240 }
1241
1242 check_type(){
1243     log check_type "$@"
1244     headers=$1
1245     type=$2
1246     shift 2
1247     disable_safe "$type"
1248     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1249 }
1250
1251 check_struct(){
1252     log check_struct "$@"
1253     headers=$1
1254     struct=$2
1255     member=$3
1256     shift 3
1257     disable_safe "${struct}_${member}"
1258     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1259         enable_safe "${struct}_${member}"
1260 }
1261
1262 check_builtin(){
1263     log check_builtin "$@"
1264     name=$1
1265     headers=$2
1266     builtin=$3
1267     shift 3
1268     disable "$name"
1269     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1270 }
1271
1272 check_compile_assert(){
1273     log check_compile_assert "$@"
1274     name=$1
1275     headers=$2
1276     condition=$3
1277     shift 3
1278     disable "$name"
1279     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1280 }
1281
1282 require(){
1283     name="$1"
1284     header="$2"
1285     func="$3"
1286     shift 3
1287     check_lib $header $func "$@" || die "ERROR: $name not found"
1288 }
1289
1290 require2(){
1291     name="$1"
1292     headers="$2"
1293     func="$3"
1294     shift 3
1295     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1296 }
1297
1298 require_cpp(){
1299     name="$1"
1300     headers="$2"
1301     classes="$3"
1302     shift 3
1303     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1304 }
1305
1306 use_pkg_config(){
1307     pkg="$1"
1308     check_pkg_config "$@" || return 1
1309     add_cflags    $(get_safe "${pkg}_cflags")
1310     add_extralibs $(get_safe "${pkg}_libs")
1311 }
1312
1313 require_pkg_config(){
1314     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1315 }
1316
1317 require_libfreetype(){
1318     log require_libfreetype "$@"
1319     pkg="freetype2"
1320     check_cmd $pkg_config --exists --print-errors $pkg \
1321       || die "ERROR: $pkg not found"
1322     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1323     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1324     {
1325         echo "#include <ft2build.h>"
1326         echo "#include FT_FREETYPE_H"
1327         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1328         echo "int main(void) { return 0; }"
1329     } | check_ld "cc" $pkg_cflags $pkg_libs \
1330       && set_safe "${pkg}_cflags" $pkg_cflags \
1331       && set_safe "${pkg}_libs"   $pkg_libs \
1332       || die "ERROR: $pkg not found"
1333     add_cflags    $(get_safe "${pkg}_cflags")
1334     add_extralibs $(get_safe "${pkg}_libs")
1335 }
1336
1337 hostcc_e(){
1338     eval printf '%s\\n' $HOSTCC_E
1339 }
1340
1341 hostcc_o(){
1342     eval printf '%s\\n' $HOSTCC_O
1343 }
1344
1345 check_host_cc(){
1346     log check_host_cc "$@"
1347     cat > $TMPC
1348     log_file $TMPC
1349     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1350 }
1351
1352 check_host_cpp(){
1353     log check_host_cpp "$@"
1354     cat > $TMPC
1355     log_file $TMPC
1356     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1357 }
1358
1359 check_host_cppflags(){
1360     log check_host_cppflags "$@"
1361     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1362 int x;
1363 EOF
1364 }
1365
1366 check_host_cflags(){
1367     log check_host_cflags "$@"
1368     set -- $($host_cflags_filter "$@")
1369     check_host_cc "$@" <<EOF && append host_cflags "$@"
1370 int x;
1371 EOF
1372 }
1373
1374 check_host_cpp_condition(){
1375     log check_host_cpp_condition "$@"
1376     header=$1
1377     condition=$2
1378     shift 2
1379     check_host_cpp "$@" <<EOF
1380 #include <$header>
1381 #if !($condition)
1382 #error "unsatisfied condition: $condition"
1383 #endif
1384 EOF
1385 }
1386
1387 cp_if_changed(){
1388     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1389     mkdir -p "$(dirname $2)"
1390     $cp_f "$1" "$2"
1391 }
1392
1393 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1394 # system-dependent things.
1395
1396 AVCODEC_COMPONENTS="
1397     bsfs
1398     decoders
1399     encoders
1400     hwaccels
1401     parsers
1402 "
1403
1404 AVDEVICE_COMPONENTS="
1405     indevs
1406     outdevs
1407 "
1408 AVFILTER_COMPONENTS="
1409     filters
1410 "
1411 AVFORMAT_COMPONENTS="
1412     demuxers
1413     muxers
1414     protocols
1415 "
1416
1417 AVRESAMPLE_COMPONENTS=""
1418 AVUTIL_COMPONENTS=""
1419
1420 COMPONENT_LIST="
1421     $AVCODEC_COMPONENTS
1422     $AVDEVICE_COMPONENTS
1423     $AVFILTER_COMPONENTS
1424     $AVFORMAT_COMPONENTS
1425     $AVRESAMPLE_COMPONENTS
1426     $AVUTIL_COMPONENTS
1427 "
1428
1429 EXAMPLE_LIST="
1430     avio_reading_example
1431     avio_dir_cmd_example
1432     decoding_encoding_example
1433     demuxing_decoding_example
1434     extract_mvs_example
1435     filter_audio_example
1436     filtering_audio_example
1437     filtering_video_example
1438     metadata_example
1439     muxing_example
1440     qsvdec_example
1441     remuxing_example
1442     resampling_audio_example
1443     scaling_video_example
1444     transcode_aac_example
1445     transcoding_example
1446 "
1447
1448 EXTERNAL_LIBRARY_LIST="
1449     audiotoolbox
1450     avisynth
1451     bzlib
1452     chromaprint
1453     crystalhd
1454     cuda
1455     decklink
1456     frei0r
1457     gcrypt
1458     gmp
1459     gnutls
1460     iconv
1461     jni
1462     ladspa
1463     libass
1464     libbluray
1465     libbs2b
1466     libcaca
1467     libcdio
1468     libcelt
1469     libdc1394
1470     libfaac
1471     libfdk_aac
1472     libflite
1473     libfontconfig
1474     libfreetype
1475     libfribidi
1476     libgme
1477     libgsm
1478     libiec61883
1479     libilbc
1480     libkvazaar
1481     libmfx
1482     libmodplug
1483     libmp3lame
1484     libnut
1485     libopencore_amrnb
1486     libopencore_amrwb
1487     libopencv
1488     libopenh264
1489     libopenjpeg
1490     libopus
1491     libpulse
1492     librtmp
1493     librubberband
1494     libschroedinger
1495     libshine
1496     libsmbclient
1497     libsnappy
1498     libsoxr
1499     libspeex
1500     libssh
1501     libtesseract
1502     libtheora
1503     libtwolame
1504     libutvideo
1505     libv4l2
1506     libvidstab
1507     libvo_amrwbenc
1508     libvorbis
1509     libvpx
1510     libwavpack
1511     libwebp
1512     libx264
1513     libx265
1514     libxavs
1515     libxcb
1516     libxcb_shm
1517     libxcb_shape
1518     libxcb_xfixes
1519     libxvid
1520     libzimg
1521     libzmq
1522     libzvbi
1523     lzma
1524     mediacodec
1525     mmal
1526     netcdf
1527     nvenc
1528     openal
1529     opencl
1530     opengl
1531     openssl
1532     schannel
1533     sdl
1534     securetransport
1535     videotoolbox
1536     x11grab
1537     xlib
1538     zlib
1539 "
1540
1541 DOCUMENT_LIST="
1542     doc
1543     htmlpages
1544     manpages
1545     podpages
1546     txtpages
1547 "
1548
1549 FEATURE_LIST="
1550     ftrapv
1551     gray
1552     hardcoded_tables
1553     runtime_cpudetect
1554     safe_bitstream_reader
1555     shared
1556     small
1557     static
1558     swscale_alpha
1559 "
1560
1561 HWACCEL_LIST="
1562     d3d11va
1563     dxva2
1564     vaapi
1565     vda
1566     vdpau
1567     videotoolbox_hwaccel
1568     xvmc
1569 "
1570
1571 LIBRARY_LIST="
1572     avcodec
1573     avdevice
1574     avfilter
1575     avformat
1576     avresample
1577     avutil
1578     postproc
1579     swresample
1580     swscale
1581 "
1582
1583 LICENSE_LIST="
1584     gpl
1585     nonfree
1586     version3
1587 "
1588
1589 PROGRAM_LIST="
1590     ffplay
1591     ffprobe
1592     ffserver
1593     ffmpeg
1594 "
1595
1596 SUBSYSTEM_LIST="
1597     dct
1598     dwt
1599     error_resilience
1600     faan
1601     fast_unaligned
1602     fft
1603     lsp
1604     lzo
1605     mdct
1606     pixelutils
1607     network
1608     rdft
1609 "
1610
1611 CONFIG_LIST="
1612     $COMPONENT_LIST
1613     $DOCUMENT_LIST
1614     $EXAMPLE_LIST
1615     $EXTERNAL_LIBRARY_LIST
1616     $FEATURE_LIST
1617     $HWACCEL_LIST
1618     $LICENSE_LIST
1619     $LIBRARY_LIST
1620     $PROGRAM_LIST
1621     $SUBSYSTEM_LIST
1622     fontconfig
1623     incompatible_libav_abi
1624     memalign_hack
1625     memory_poisoning
1626     neon_clobber_test
1627     pic
1628     pod2man
1629     raise_major
1630     thumb
1631     valgrind_backtrace
1632     xmm_clobber_test
1633 "
1634
1635 THREADS_LIST="
1636     pthreads
1637     os2threads
1638     w32threads
1639 "
1640
1641 ATOMICS_LIST="
1642     atomics_gcc
1643     atomics_suncc
1644     atomics_win32
1645 "
1646
1647 ARCH_LIST="
1648     aarch64
1649     alpha
1650     arm
1651     avr32
1652     avr32_ap
1653     avr32_uc
1654     bfin
1655     ia64
1656     m68k
1657     mips
1658     mips64
1659     parisc
1660     ppc
1661     ppc64
1662     s390
1663     sh4
1664     sparc
1665     sparc64
1666     tilegx
1667     tilepro
1668     tomi
1669     x86
1670     x86_32
1671     x86_64
1672 "
1673
1674 ARCH_EXT_LIST_ARM="
1675     armv5te
1676     armv6
1677     armv6t2
1678     armv8
1679     neon
1680     vfp
1681     vfpv3
1682     setend
1683 "
1684
1685 ARCH_EXT_LIST_MIPS="
1686     mipsfpu
1687     mips32r2
1688     mips32r5
1689     mips64r2
1690     mips32r6
1691     mips64r6
1692     mipsdsp
1693     mipsdspr2
1694     msa
1695 "
1696
1697 ARCH_EXT_LIST_LOONGSON="
1698     loongson2
1699     loongson3
1700     mmi
1701 "
1702
1703 ARCH_EXT_LIST_X86_SIMD="
1704     aesni
1705     amd3dnow
1706     amd3dnowext
1707     avx
1708     avx2
1709     fma3
1710     fma4
1711     mmx
1712     mmxext
1713     sse
1714     sse2
1715     sse3
1716     sse4
1717     sse42
1718     ssse3
1719     xop
1720 "
1721
1722 ARCH_EXT_LIST_PPC="
1723     altivec
1724     dcbzl
1725     ldbrx
1726     power8
1727     ppc4xx
1728     vsx
1729 "
1730
1731 ARCH_EXT_LIST_X86="
1732     $ARCH_EXT_LIST_X86_SIMD
1733     cpunop
1734     i686
1735 "
1736
1737 ARCH_EXT_LIST="
1738     $ARCH_EXT_LIST_ARM
1739     $ARCH_EXT_LIST_PPC
1740     $ARCH_EXT_LIST_X86
1741     $ARCH_EXT_LIST_MIPS
1742     $ARCH_EXT_LIST_LOONGSON
1743 "
1744
1745 ARCH_FEATURES="
1746     aligned_stack
1747     fast_64bit
1748     fast_clz
1749     fast_cmov
1750     local_aligned_8
1751     local_aligned_16
1752     local_aligned_32
1753     simd_align_16
1754 "
1755
1756 BUILTIN_LIST="
1757     atomic_cas_ptr
1758     atomic_compare_exchange
1759     machine_rw_barrier
1760     MemoryBarrier
1761     mm_empty
1762     rdtsc
1763     sarestart
1764     sem_timedwait
1765     sync_val_compare_and_swap
1766 "
1767 HAVE_LIST_CMDLINE="
1768     inline_asm
1769     symver
1770     yasm
1771 "
1772
1773 HAVE_LIST_PUB="
1774     bigendian
1775     fast_unaligned
1776     incompatible_libav_abi
1777 "
1778
1779 HEADERS_LIST="
1780     alsa_asoundlib_h
1781     altivec_h
1782     arpa_inet_h
1783     asm_types_h
1784     cdio_paranoia_h
1785     cdio_paranoia_paranoia_h
1786     dispatch_dispatch_h
1787     dev_bktr_ioctl_bt848_h
1788     dev_bktr_ioctl_meteor_h
1789     dev_ic_bt8xx_h
1790     dev_video_bktr_ioctl_bt848_h
1791     dev_video_meteor_ioctl_meteor_h
1792     direct_h
1793     dirent_h
1794     dlfcn_h
1795     d3d11_h
1796     dxva_h
1797     ES2_gl_h
1798     gsm_h
1799     io_h
1800     mach_mach_time_h
1801     machine_ioctl_bt848_h
1802     machine_ioctl_meteor_h
1803     malloc_h
1804     opencv2_core_core_c_h
1805     openjpeg_2_1_openjpeg_h
1806     openjpeg_2_0_openjpeg_h
1807     openjpeg_1_5_openjpeg_h
1808     OpenGL_gl3_h
1809     poll_h
1810     sndio_h
1811     soundcard_h
1812     sys_mman_h
1813     sys_param_h
1814     sys_resource_h
1815     sys_select_h
1816     sys_soundcard_h
1817     sys_time_h
1818     sys_un_h
1819     sys_videoio_h
1820     termios_h
1821     udplite_h
1822     unistd_h
1823     valgrind_valgrind_h
1824     windows_h
1825     winsock2_h
1826 "
1827
1828 INTRINSICS_LIST="
1829     intrinsics_neon
1830 "
1831
1832 COMPLEX_FUNCS="
1833     cabs
1834     cexp
1835 "
1836
1837 MATH_FUNCS="
1838     atanf
1839     atan2f
1840     cbrt
1841     cbrtf
1842     copysign
1843     cosf
1844     erf
1845     exp2
1846     exp2f
1847     expf
1848     hypot
1849     isfinite
1850     isinf
1851     isnan
1852     ldexpf
1853     llrint
1854     llrintf
1855     log2
1856     log2f
1857     log10f
1858     lrint
1859     lrintf
1860     powf
1861     rint
1862     round
1863     roundf
1864     sinf
1865     trunc
1866     truncf
1867 "
1868
1869 SYSTEM_FUNCS="
1870     access
1871     aligned_malloc
1872     arc4random
1873     clock_gettime
1874     closesocket
1875     CommandLineToArgvW
1876     CoTaskMemFree
1877     CryptGenRandom
1878     dlopen
1879     fcntl
1880     flt_lim
1881     fork
1882     getaddrinfo
1883     gethrtime
1884     getopt
1885     GetProcessAffinityMask
1886     GetProcessMemoryInfo
1887     GetProcessTimes
1888     getrusage
1889     GetSystemTimeAsFileTime
1890     gettimeofday
1891     glob
1892     glXGetProcAddress
1893     gmtime_r
1894     inet_aton
1895     isatty
1896     jack_port_get_latency_range
1897     kbhit
1898     localtime_r
1899     lstat
1900     lzo1x_999_compress
1901     mach_absolute_time
1902     MapViewOfFile
1903     memalign
1904     mkstemp
1905     mmap
1906     mprotect
1907     nanosleep
1908     PeekNamedPipe
1909     posix_memalign
1910     pthread_cancel
1911     sched_getaffinity
1912     SetConsoleTextAttribute
1913     SetConsoleCtrlHandler
1914     setmode
1915     setrlimit
1916     Sleep
1917     strerror_r
1918     sysconf
1919     sysctl
1920     usleep
1921     UTGetOSTypeFromString
1922     VirtualAlloc
1923     wglGetProcAddress
1924 "
1925
1926 TOOLCHAIN_FEATURES="
1927     as_dn_directive
1928     as_func
1929     as_object_arch
1930     asm_mod_q
1931     attribute_may_alias
1932     attribute_packed
1933     ebp_available
1934     ebx_available
1935     gnu_as
1936     gnu_windres
1937     ibm_asm
1938     inline_asm_direct_symbol_refs
1939     inline_asm_labels
1940     inline_asm_nonlocal_labels
1941     pragma_deprecated
1942     rsync_contimeout
1943     symver_asm_label
1944     symver_gnu_asm
1945     vfp_args
1946     xform_asm
1947     xmm_clobbers
1948 "
1949
1950 TYPES_LIST="
1951     CONDITION_VARIABLE_Ptr
1952     socklen_t
1953     struct_addrinfo
1954     struct_group_source_req
1955     struct_ip_mreq_source
1956     struct_ipv6_mreq
1957     struct_msghdr_msg_flags
1958     struct_pollfd
1959     struct_rusage_ru_maxrss
1960     struct_sctp_event_subscribe
1961     struct_sockaddr_in6
1962     struct_sockaddr_sa_len
1963     struct_sockaddr_storage
1964     struct_stat_st_mtim_tv_nsec
1965     struct_v4l2_frmivalenum_discrete
1966 "
1967
1968 HAVE_LIST="
1969     $ARCH_EXT_LIST
1970     $(add_suffix _external $ARCH_EXT_LIST)
1971     $(add_suffix _inline   $ARCH_EXT_LIST)
1972     $ARCH_FEATURES
1973     $ATOMICS_LIST
1974     $BUILTIN_LIST
1975     $COMPLEX_FUNCS
1976     $HAVE_LIST_CMDLINE
1977     $HAVE_LIST_PUB
1978     $HEADERS_LIST
1979     $INTRINSICS_LIST
1980     $MATH_FUNCS
1981     $SYSTEM_FUNCS
1982     $THREADS_LIST
1983     $TOOLCHAIN_FEATURES
1984     $TYPES_LIST
1985     atomics_native
1986     dos_paths
1987     dxva2_lib
1988     dxva2api_cobj
1989     libc_msvcrt
1990     libdc1394_1
1991     libdc1394_2
1992     makeinfo
1993     makeinfo_html
1994     perl
1995     pod2man
1996     sdl
1997     section_data_rel_ro
1998     texi2html
1999     threads
2000     vaapi_x11
2001     vdpau_x11
2002     winrt
2003     xlib
2004 "
2005
2006 # options emitted with CONFIG_ prefix but not available on the command line
2007 CONFIG_EXTRA="
2008     aandcttables
2009     ac3dsp
2010     audio_frame_queue
2011     audiodsp
2012     blockdsp
2013     bswapdsp
2014     cabac
2015     dirac_parse
2016     dvprofile
2017     exif
2018     faandct
2019     faanidct
2020     fdctdsp
2021     flacdsp
2022     fmtconvert
2023     frame_thread_encoder
2024     g722dsp
2025     golomb
2026     gplv3
2027     h263dsp
2028     h264chroma
2029     h264dsp
2030     h264pred
2031     h264qpel
2032     hpeldsp
2033     huffman
2034     huffyuvdsp
2035     huffyuvencdsp
2036     idctdsp
2037     iirfilter
2038     imdct15
2039     intrax8
2040     iso_media
2041     ividsp
2042     jpegtables
2043     lgplv3
2044     libx262
2045     llauddsp
2046     llviddsp
2047     lpc
2048     lzf
2049     me_cmp
2050     mpeg_er
2051     mpegaudio
2052     mpegaudiodsp
2053     mpegvideo
2054     mpegvideoenc
2055     mss34dsp
2056     pixblockdsp
2057     qpeldsp
2058     qsv
2059     qsvdec
2060     qsvenc
2061     rangecoder
2062     riffdec
2063     riffenc
2064     rtpdec
2065     rtpenc_chain
2066     rv34dsp
2067     sinewin
2068     snappy
2069     srtp
2070     startcode
2071     texturedsp
2072     texturedspenc
2073     tpeldsp
2074     vc1dsp
2075     videodsp
2076     vp3dsp
2077     vp56dsp
2078     vp8dsp
2079     wma_freqs
2080     wmv2dsp
2081 "
2082
2083 CMDLINE_SELECT="
2084     $ARCH_EXT_LIST
2085     $CONFIG_LIST
2086     $HAVE_LIST_CMDLINE
2087     $THREADS_LIST
2088     asm
2089     cross_compile
2090     debug
2091     extra_warnings
2092     logging
2093     lto
2094     optimizations
2095     rpath
2096     stripping
2097 "
2098
2099 PATHS_LIST="
2100     bindir
2101     datadir
2102     docdir
2103     incdir
2104     libdir
2105     mandir
2106     pkgconfigdir
2107     prefix
2108     shlibdir
2109     install_name_dir
2110 "
2111
2112 CMDLINE_SET="
2113     $PATHS_LIST
2114     ar
2115     arch
2116     as
2117     assert_level
2118     build_suffix
2119     cc
2120     objcc
2121     cpu
2122     cross_prefix
2123     custom_allocator
2124     cxx
2125     dep_cc
2126     doxygen
2127     env
2128     extra_version
2129     gas
2130     host_cc
2131     host_cflags
2132     host_ld
2133     host_ldflags
2134     host_libs
2135     host_os
2136     install
2137     ld
2138     logfile
2139     malloc_prefix
2140     nm
2141     optflags
2142     pkg_config
2143     pkg_config_flags
2144     progs_suffix
2145     random_seed
2146     ranlib
2147     samples
2148     strip
2149     sws_max_filter_size
2150     sysinclude
2151     sysroot
2152     target_exec
2153     target_os
2154     target_path
2155     target_samples
2156     tempprefix
2157     toolchain
2158     valgrind
2159     yasmexe
2160 "
2161
2162 CMDLINE_APPEND="
2163     extra_cflags
2164     extra_cxxflags
2165     extra_objcflags
2166     host_cppflags
2167 "
2168
2169 # code dependency declarations
2170
2171 # architecture extensions
2172
2173 armv5te_deps="arm"
2174 armv6_deps="arm"
2175 armv6t2_deps="arm"
2176 armv8_deps="aarch64"
2177 neon_deps_any="aarch64 arm"
2178 intrinsics_neon_deps="neon"
2179 vfp_deps_any="aarch64 arm"
2180 vfpv3_deps="vfp"
2181 setend_deps="arm"
2182
2183 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2184
2185 mipsfpu_deps="mips"
2186 mipsdsp_deps="mips"
2187 mipsdspr2_deps="mips"
2188 mips32r2_deps="mips"
2189 mips32r5_deps="mips"
2190 mips32r6_deps="mips"
2191 mips64r2_deps="mips"
2192 mips64r6_deps="mips"
2193 msa_deps="mipsfpu"
2194 mmi_deps="mips"
2195
2196 altivec_deps="ppc"
2197 dcbzl_deps="ppc"
2198 ldbrx_deps="ppc"
2199 ppc4xx_deps="ppc"
2200 vsx_deps="altivec"
2201 power8_deps="vsx"
2202
2203 cpunop_deps="i686"
2204 x86_64_select="i686"
2205 x86_64_suggest="fast_cmov"
2206
2207 amd3dnow_deps="mmx"
2208 amd3dnowext_deps="amd3dnow"
2209 i686_deps="x86"
2210 mmx_deps="x86"
2211 mmxext_deps="mmx"
2212 sse_deps="mmxext"
2213 sse2_deps="sse"
2214 sse3_deps="sse2"
2215 ssse3_deps="sse3"
2216 sse4_deps="ssse3"
2217 sse42_deps="sse4"
2218 aesni_deps="sse42"
2219 avx_deps="sse42"
2220 xop_deps="avx"
2221 fma3_deps="avx"
2222 fma4_deps="avx"
2223 avx2_deps="avx"
2224
2225 mmx_external_deps="yasm"
2226 mmx_inline_deps="inline_asm"
2227 mmx_suggest="mmx_external mmx_inline"
2228
2229 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2230     eval dep=\$${ext}_deps
2231     eval ${ext}_external_deps='"${dep}_external"'
2232     eval ${ext}_inline_deps='"${dep}_inline"'
2233     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2234 done
2235
2236 aligned_stack_if_any="aarch64 ppc x86"
2237 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2238 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2239 fast_unaligned_if_any="aarch64 ppc x86"
2240 simd_align_16_if_any="altivec neon sse"
2241
2242 # system capabilities
2243 symver_if_any="symver_asm_label symver_gnu_asm"
2244 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2245
2246 # threading support
2247 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2248 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2249 atomics_win32_if="MemoryBarrier"
2250 atomics_native_if_any="$ATOMICS_LIST"
2251 w32threads_deps="atomics_native"
2252 threads_if_any="$THREADS_LIST"
2253
2254 # subsystems
2255 dct_select="rdft"
2256 dirac_parse_select="golomb"
2257 error_resilience_select="me_cmp"
2258 faandct_deps="faan fdctdsp"
2259 faanidct_deps="faan idctdsp"
2260 h264dsp_select="startcode"
2261 frame_thread_encoder_deps="encoders threads"
2262 mdct_select="fft"
2263 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2264 mpeg_er_select="error_resilience"
2265 mpegaudio_select="mpegaudiodsp"
2266 mpegaudiodsp_select="dct"
2267 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2268 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2269 qsvdec_select="qsv"
2270 qsvenc_select="qsv"
2271 vc1dsp_select="h264chroma qpeldsp startcode"
2272 rdft_select="fft"
2273
2274 # decoders / encoders
2275 aac_decoder_select="imdct15 mdct sinewin"
2276 aac_fixed_decoder_select="mdct sinewin"
2277 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2278 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2279 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2280 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2281 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2282 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2283 adpcm_g722_decoder_select="g722dsp"
2284 adpcm_g722_encoder_select="g722dsp"
2285 aic_decoder_select="golomb idctdsp"
2286 alac_encoder_select="lpc"
2287 als_decoder_select="bswapdsp"
2288 amrnb_decoder_select="lsp"
2289 amrwb_decoder_select="lsp"
2290 amv_decoder_select="sp5x_decoder exif"
2291 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2292 ape_decoder_select="bswapdsp llauddsp"
2293 apng_decoder_select="zlib"
2294 apng_encoder_select="huffyuvencdsp zlib"
2295 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2296 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2297 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2298 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2299 atrac1_decoder_select="mdct sinewin"
2300 atrac3_decoder_select="mdct"
2301 atrac3p_decoder_select="mdct sinewin"
2302 avrn_decoder_select="exif jpegtables"
2303 bink_decoder_select="blockdsp hpeldsp"
2304 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2305 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2306 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2307 cllc_decoder_select="bswapdsp"
2308 comfortnoise_encoder_select="lpc"
2309 cook_decoder_select="audiodsp mdct sinewin"
2310 cscd_decoder_select="lzo"
2311 cscd_decoder_suggest="zlib"
2312 dca_decoder_select="mdct"
2313 dds_decoder_select="texturedsp"
2314 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2315 dnxhd_decoder_select="blockdsp idctdsp"
2316 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2317 dvvideo_decoder_select="dvprofile idctdsp"
2318 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2319 dxa_decoder_select="zlib"
2320 dxv_decoder_select="lzf texturedsp"
2321 eac3_decoder_select="ac3_decoder"
2322 eac3_encoder_select="ac3_encoder"
2323 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2324 eatgq_decoder_select="aandcttables"
2325 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2326 exr_decoder_select="zlib"
2327 ffv1_decoder_select="golomb rangecoder"
2328 ffv1_encoder_select="rangecoder"
2329 ffvhuff_decoder_select="huffyuv_decoder"
2330 ffvhuff_encoder_select="huffyuv_encoder"
2331 fic_decoder_select="golomb"
2332 flac_decoder_select="flacdsp golomb"
2333 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2334 flashsv2_decoder_select="zlib"
2335 flashsv2_encoder_select="zlib"
2336 flashsv_decoder_select="zlib"
2337 flashsv_encoder_select="zlib"
2338 flv_decoder_select="h263_decoder"
2339 flv_encoder_select="h263_encoder"
2340 fourxm_decoder_select="blockdsp bswapdsp"
2341 fraps_decoder_select="bswapdsp huffman"
2342 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2343 g729_decoder_select="audiodsp"
2344 h261_decoder_select="mpegvideo"
2345 h261_encoder_select="aandcttables mpegvideoenc"
2346 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2347 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2348 h263i_decoder_select="h263_decoder"
2349 h263p_decoder_select="h263_decoder"
2350 h263p_encoder_select="h263_encoder"
2351 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2352 h264_decoder_suggest="error_resilience"
2353 h264_qsv_decoder_deps="libmfx"
2354 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2355 h264_qsv_encoder_deps="libmfx"
2356 h264_qsv_encoder_select="qsvenc"
2357 hap_decoder_select="snappy texturedsp"
2358 hap_encoder_deps="libsnappy"
2359 hap_encoder_select="texturedspenc"
2360 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2361 hevc_qsv_decoder_deps="libmfx"
2362 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2363 hevc_qsv_encoder_deps="libmfx"
2364 hevc_qsv_encoder_select="qsvenc"
2365 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2366 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2367 iac_decoder_select="imc_decoder"
2368 imc_decoder_select="bswapdsp fft mdct sinewin"
2369 indeo3_decoder_select="hpeldsp"
2370 indeo4_decoder_select="ividsp"
2371 indeo5_decoder_select="ividsp"
2372 interplay_video_decoder_select="hpeldsp"
2373 jpegls_decoder_select="golomb mjpeg_decoder"
2374 jpegls_encoder_select="golomb"
2375 jv_decoder_select="blockdsp"
2376 lagarith_decoder_select="huffyuvdsp"
2377 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2378 loco_decoder_select="golomb"
2379 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2380 metasound_decoder_select="lsp mdct sinewin"
2381 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2382 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2383 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2384 mjpegb_decoder_select="mjpeg_decoder"
2385 mlp_decoder_select="mlp_parser"
2386 motionpixels_decoder_select="bswapdsp"
2387 mp1_decoder_select="mpegaudio"
2388 mp1float_decoder_select="mpegaudio"
2389 mp2_decoder_select="mpegaudio"
2390 mp2float_decoder_select="mpegaudio"
2391 mp3_decoder_select="mpegaudio"
2392 mp3adu_decoder_select="mpegaudio"
2393 mp3adufloat_decoder_select="mpegaudio"
2394 mp3float_decoder_select="mpegaudio"
2395 mp3on4_decoder_select="mpegaudio"
2396 mp3on4float_decoder_select="mpegaudio"
2397 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2398 mpc8_decoder_select="mpegaudiodsp"
2399 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2400 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2401 mpegvideo_decoder_select="mpegvideo"
2402 mpeg1video_decoder_select="mpegvideo"
2403 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2404 mpeg2video_decoder_select="mpegvideo"
2405 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2406 mpeg2_qsv_decoder_deps="libmfx"
2407 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2408 mpeg2_qsv_encoder_deps="libmfx"
2409 mpeg2_qsv_encoder_select="qsvenc"
2410 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2411 mpeg4_encoder_select="h263_encoder"
2412 msa1_decoder_select="mss34dsp"
2413 msmpeg4v1_decoder_select="h263_decoder"
2414 msmpeg4v2_decoder_select="h263_decoder"
2415 msmpeg4v2_encoder_select="h263_encoder"
2416 msmpeg4v3_decoder_select="h263_decoder"
2417 msmpeg4v3_encoder_select="h263_encoder"
2418 mss2_decoder_select="vc1_decoder mpegvideo"
2419 mts2_decoder_select="mss34dsp"
2420 mxpeg_decoder_select="mjpeg_decoder"
2421 nellymoser_decoder_select="mdct sinewin"
2422 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2423 nuv_decoder_select="idctdsp lzo"
2424 on2avc_decoder_select="mdct"
2425 opus_decoder_deps="swresample"
2426 opus_decoder_select="imdct15"
2427 png_decoder_select="zlib"
2428 png_encoder_select="huffyuvencdsp zlib"
2429 prores_decoder_select="blockdsp idctdsp"
2430 prores_encoder_select="fdctdsp"
2431 qcelp_decoder_select="lsp"
2432 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2433 ra_144_decoder_select="audiodsp"
2434 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2435 ralf_decoder_select="golomb"
2436 rawvideo_decoder_select="bswapdsp"
2437 rscc_decoder_select="zlib"
2438 rtjpeg_decoder_select="me_cmp"
2439 rv10_decoder_select="h263_decoder"
2440 rv10_encoder_select="h263_encoder"
2441 rv20_decoder_select="h263_decoder"
2442 rv20_encoder_select="h263_encoder"
2443 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2444 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2445 screenpresso_decoder_select="zlib"
2446 shorten_decoder_select="golomb"
2447 sipr_decoder_select="lsp"
2448 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2449 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2450 sonic_decoder_select="golomb rangecoder"
2451 sonic_encoder_select="golomb rangecoder"
2452 sonic_ls_encoder_select="golomb rangecoder"
2453 sp5x_decoder_select="mjpeg_decoder"
2454 svq1_decoder_select="hpeldsp"
2455 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2456 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2457 svq3_decoder_suggest="zlib"
2458 tak_decoder_select="audiodsp"
2459 tdsc_decoder_select="zlib mjpeg_decoder"
2460 theora_decoder_select="vp3_decoder"
2461 thp_decoder_select="mjpeg_decoder"
2462 tiff_decoder_suggest="zlib lzma"
2463 tiff_encoder_suggest="zlib"
2464 truehd_decoder_select="mlp_parser"
2465 truemotion2_decoder_select="bswapdsp"
2466 truespeech_decoder_select="bswapdsp"
2467 tscc_decoder_select="zlib"
2468 twinvq_decoder_select="mdct lsp sinewin"
2469 txd_decoder_select="texturedsp"
2470 utvideo_decoder_select="bswapdsp"
2471 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2472 vble_decoder_select="huffyuvdsp"
2473 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2474 vc1_qsv_decoder_deps="libmfx"
2475 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2476 vc1image_decoder_select="vc1_decoder"
2477 vorbis_decoder_select="mdct"
2478 vorbis_encoder_select="mdct"
2479 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2480 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2481 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2482 vp6a_decoder_select="vp6_decoder"
2483 vp6f_decoder_select="vp6_decoder"
2484 vp7_decoder_select="h264pred videodsp vp8dsp"
2485 vp8_decoder_select="h264pred videodsp vp8dsp"
2486 vp9_decoder_select="videodsp vp9_parser"
2487 webp_decoder_select="vp8_decoder exif"
2488 wmalossless_decoder_select="llauddsp"
2489 wmapro_decoder_select="mdct sinewin wma_freqs"
2490 wmav1_decoder_select="mdct sinewin wma_freqs"
2491 wmav1_encoder_select="mdct sinewin wma_freqs"
2492 wmav2_decoder_select="mdct sinewin wma_freqs"
2493 wmav2_encoder_select="mdct sinewin wma_freqs"
2494 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2495 wmv1_decoder_select="h263_decoder"
2496 wmv1_encoder_select="h263_encoder"
2497 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2498 wmv2_encoder_select="h263_encoder wmv2dsp"
2499 wmv3_decoder_select="vc1_decoder"
2500 wmv3image_decoder_select="wmv3_decoder"
2501 xma1_decoder_select="wmapro_decoder"
2502 xma2_decoder_select="wmapro_decoder"
2503 zerocodec_decoder_select="zlib"
2504 zlib_decoder_select="zlib"
2505 zlib_encoder_select="zlib"
2506 zmbv_decoder_select="zlib"
2507 zmbv_encoder_select="zlib"
2508
2509 # platform codecs
2510 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2511 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2512
2513 # hardware accelerators
2514 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2515 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2516 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2517 vaapi_deps="va_va_h"
2518 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2519 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2520 vda_deps="vda_framework pthreads"
2521 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2522 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2523 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2524 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2525 xvmc_deps="X11_extensions_XvMClib_h"
2526
2527 h263_vaapi_hwaccel_deps="vaapi"
2528 h263_vaapi_hwaccel_select="h263_decoder"
2529 h263_videotoolbox_hwaccel_deps="videotoolbox"
2530 h263_videotoolbox_hwaccel_select="h263_decoder"
2531 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2532 h264_d3d11va_hwaccel_deps="d3d11va"
2533 h264_d3d11va_hwaccel_select="h264_decoder"
2534 h264_dxva2_hwaccel_deps="dxva2"
2535 h264_dxva2_hwaccel_select="h264_decoder"
2536 h264_mediacodec_decoder_deps="mediacodec"
2537 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2538 h264_mmal_decoder_deps="mmal"
2539 h264_mmal_decoder_select="mmal"
2540 h264_mmal_hwaccel_deps="mmal"
2541 h264_qsv_hwaccel_deps="libmfx"
2542 h264_vaapi_hwaccel_deps="vaapi"
2543 h264_vaapi_hwaccel_select="h264_decoder"
2544 h264_vda_decoder_deps="vda"
2545 h264_vda_decoder_select="h264_decoder"
2546 h264_vda_hwaccel_deps="vda"
2547 h264_vda_hwaccel_select="h264_decoder"
2548 h264_vda_old_hwaccel_deps="vda"
2549 h264_vda_old_hwaccel_select="h264_decoder"
2550 h264_vdpau_decoder_deps="vdpau"
2551 h264_vdpau_decoder_select="h264_decoder"
2552 h264_vdpau_hwaccel_deps="vdpau"
2553 h264_vdpau_hwaccel_select="h264_decoder"
2554 h264_videotoolbox_hwaccel_deps="videotoolbox"
2555 h264_videotoolbox_hwaccel_select="h264_decoder"
2556 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2557 hevc_d3d11va_hwaccel_select="hevc_decoder"
2558 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2559 hevc_dxva2_hwaccel_select="hevc_decoder"
2560 hevc_qsv_hwaccel_deps="libmfx"
2561 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2562 hevc_vaapi_hwaccel_select="hevc_decoder"
2563 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2564 hevc_vdpau_hwaccel_select="hevc_decoder"
2565 mpeg_vdpau_decoder_deps="vdpau"
2566 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2567 mpeg_xvmc_hwaccel_deps="xvmc"
2568 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2569 mpeg1_vdpau_decoder_deps="vdpau"
2570 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2571 mpeg1_vdpau_hwaccel_deps="vdpau"
2572 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2573 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2574 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2575 mpeg1_xvmc_hwaccel_deps="xvmc"
2576 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2577 mpeg2_crystalhd_decoder_select="crystalhd"
2578 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2579 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2580 mpeg2_dxva2_hwaccel_deps="dxva2"
2581 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2582 mpeg2_mmal_decoder_deps="mmal"
2583 mpeg2_mmal_decoder_select="mmal"
2584 mpeg2_mmal_hwaccel_deps="mmal"
2585 mpeg2_qsv_hwaccel_deps="libmfx"
2586 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2587 mpeg2_vaapi_hwaccel_deps="vaapi"
2588 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2589 mpeg2_vdpau_hwaccel_deps="vdpau"
2590 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2591 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2592 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2593 mpeg2_xvmc_hwaccel_deps="xvmc"
2594 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2595 mpeg4_crystalhd_decoder_select="crystalhd"
2596 mpeg4_mmal_decoder_deps="mmal"
2597 mpeg4_mmal_decoder_select="mmal"
2598 mpeg4_mmal_hwaccel_deps="mmal"
2599 mpeg4_vaapi_hwaccel_deps="vaapi"
2600 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2601 mpeg4_vdpau_decoder_deps="vdpau"
2602 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2603 mpeg4_vdpau_hwaccel_deps="vdpau"
2604 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2605 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2606 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2607 msmpeg4_crystalhd_decoder_select="crystalhd"
2608 vc1_crystalhd_decoder_select="crystalhd"
2609 vc1_d3d11va_hwaccel_deps="d3d11va"
2610 vc1_d3d11va_hwaccel_select="vc1_decoder"
2611 vc1_dxva2_hwaccel_deps="dxva2"
2612 vc1_dxva2_hwaccel_select="vc1_decoder"
2613 vc1_mmal_decoder_deps="mmal"
2614 vc1_mmal_decoder_select="mmal"
2615 vc1_mmal_hwaccel_deps="mmal"
2616 vc1_qsv_hwaccel_deps="libmfx"
2617 vc1_qsv_hwaccel_select="qsvdec_vc1"
2618 vc1_vaapi_hwaccel_deps="vaapi"
2619 vc1_vaapi_hwaccel_select="vc1_decoder"
2620 vc1_vdpau_decoder_deps="vdpau"
2621 vc1_vdpau_decoder_select="vc1_decoder"
2622 vc1_vdpau_hwaccel_deps="vdpau"
2623 vc1_vdpau_hwaccel_select="vc1_decoder"
2624 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2625 vp9_d3d11va_hwaccel_select="vp9_decoder"
2626 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2627 vp9_dxva2_hwaccel_select="vp9_decoder"
2628 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2629 vp9_vaapi_hwaccel_select="vp9_decoder"
2630 wmv3_crystalhd_decoder_select="crystalhd"
2631 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2632 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2633 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2634 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2635 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2636
2637 # parsers
2638 h264_parser_select="h264_decoder"
2639 hevc_parser_select="golomb"
2640 mpegvideo_parser_select="mpegvideo"
2641 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2642 vc1_parser_select="vc1dsp"
2643
2644 # bitstream_filters
2645 mjpeg2jpeg_bsf_select="jpegtables"
2646
2647 # external libraries
2648 aac_at_decoder_deps="audiotoolbox"
2649 ac3_at_decoder_deps="audiotoolbox"
2650 ac3_at_decoder_select="ac3_parser"
2651 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2652 alac_at_decoder_deps="audiotoolbox"
2653 amr_nb_at_decoder_deps="audiotoolbox"
2654 eac3_at_decoder_deps="audiotoolbox"
2655 eac3_at_decoder_select="ac3_parser"
2656 gsm_ms_at_decoder_deps="audiotoolbox"
2657 ilbc_at_decoder_deps="audiotoolbox"
2658 mp1_at_decoder_deps="audiotoolbox"
2659 mp2_at_decoder_deps="audiotoolbox"
2660 mp3_at_decoder_deps="audiotoolbox"
2661 pcm_alaw_at_decoder_deps="audiotoolbox"
2662 pcm_mulaw_at_decoder_deps="audiotoolbox"
2663 qdmc_at_decoder_deps="audiotoolbox"
2664 qdm2_at_decoder_deps="audiotoolbox"
2665 aac_at_encoder_deps="audiotoolbox"
2666 aac_at_encoder_select="audio_frame_queue"
2667 alac_at_encoder_deps="audiotoolbox"
2668 alac_at_encoder_select="audio_frame_queue"
2669 ilbc_at_encoder_deps="audiotoolbox"
2670 ilbc_at_encoder_select="audio_frame_queue"
2671 pcm_alaw_at_encoder_deps="audiotoolbox"
2672 pcm_alaw_at_encoder_select="audio_frame_queue"
2673 pcm_mulaw_at_encoder_deps="audiotoolbox"
2674 pcm_mulaw_at_encoder_select="audio_frame_queue"
2675 chromaprint_muxer_deps="chromaprint"
2676 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2677 libcelt_decoder_deps="libcelt"
2678 libfaac_encoder_deps="libfaac"
2679 libfaac_encoder_select="audio_frame_queue"
2680 libfdk_aac_decoder_deps="libfdk_aac"
2681 libfdk_aac_encoder_deps="libfdk_aac"
2682 libfdk_aac_encoder_select="audio_frame_queue"
2683 libgme_demuxer_deps="libgme"
2684 libgsm_decoder_deps="libgsm"
2685 libgsm_encoder_deps="libgsm"
2686 libgsm_ms_decoder_deps="libgsm"
2687 libgsm_ms_encoder_deps="libgsm"
2688 libilbc_decoder_deps="libilbc"
2689 libilbc_encoder_deps="libilbc"
2690 libkvazaar_encoder_deps="libkvazaar"
2691 libmodplug_demuxer_deps="libmodplug"
2692 libmp3lame_encoder_deps="libmp3lame"
2693 libmp3lame_encoder_select="audio_frame_queue"
2694 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2695 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2696 libopencore_amrnb_encoder_select="audio_frame_queue"
2697 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2698 libopenh264_encoder_deps="libopenh264"
2699 libopenjpeg_decoder_deps="libopenjpeg"
2700 libopenjpeg_encoder_deps="libopenjpeg"
2701 libopus_decoder_deps="libopus"
2702 libopus_encoder_deps="libopus"
2703 libopus_encoder_select="audio_frame_queue"
2704 libschroedinger_decoder_deps="libschroedinger"
2705 libschroedinger_encoder_deps="libschroedinger"
2706 libshine_encoder_deps="libshine"
2707 libshine_encoder_select="audio_frame_queue"
2708 libspeex_decoder_deps="libspeex"
2709 libspeex_encoder_deps="libspeex"
2710 libspeex_encoder_select="audio_frame_queue"
2711 libtheora_encoder_deps="libtheora"
2712 libtwolame_encoder_deps="libtwolame"
2713 libutvideo_decoder_deps="libutvideo"
2714 libutvideo_encoder_deps="libutvideo"
2715 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2716 libvorbis_decoder_deps="libvorbis"
2717 libvorbis_encoder_deps="libvorbis"
2718 libvorbis_encoder_select="audio_frame_queue"
2719 libvpx_vp8_decoder_deps="libvpx"
2720 libvpx_vp8_encoder_deps="libvpx"
2721 libvpx_vp9_decoder_deps="libvpx"
2722 libvpx_vp9_encoder_deps="libvpx"
2723 libwavpack_encoder_deps="libwavpack"
2724 libwebp_encoder_deps="libwebp"
2725 libwebp_anim_encoder_deps="libwebp"
2726 libx262_encoder_deps="libx262"
2727 libx264_encoder_deps="libx264"
2728 libx264rgb_encoder_deps="libx264"
2729 libx264rgb_encoder_select="libx264_encoder"
2730 libx265_encoder_deps="libx265"
2731 libxavs_encoder_deps="libxavs"
2732 libxvid_encoder_deps="libxvid"
2733 libzvbi_teletext_decoder_deps="libzvbi"
2734 nvenc_encoder_deps="nvenc"
2735 nvenc_h264_encoder_deps="nvenc"
2736 nvenc_hevc_encoder_deps="nvenc"
2737 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2738 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2739 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2740 videotoolbox_encoder_suggest="vda_framework"
2741
2742 # demuxers / muxers
2743 ac3_demuxer_select="ac3_parser"
2744 asf_demuxer_select="riffdec"
2745 asf_o_demuxer_select="riffdec"
2746 asf_muxer_select="riffenc"
2747 asf_stream_muxer_select="asf_muxer"
2748 avi_demuxer_select="iso_media riffdec exif"
2749 avi_muxer_select="riffenc"
2750 avisynth_demuxer_deps="avisynth"
2751 avisynth_demuxer_select="riffdec"
2752 caf_demuxer_select="iso_media riffdec"
2753 dash_muxer_select="mp4_muxer"
2754 dirac_demuxer_select="dirac_parser"
2755 dts_demuxer_select="dca_parser"
2756 dtshd_demuxer_select="dca_parser"
2757 dv_demuxer_select="dvprofile"
2758 dv_muxer_select="dvprofile"
2759 dxa_demuxer_select="riffdec"
2760 eac3_demuxer_select="ac3_parser"
2761 f4v_muxer_select="mov_muxer"
2762 flac_demuxer_select="flac_parser"
2763 hds_muxer_select="flv_muxer"
2764 hls_muxer_select="mpegts_muxer"
2765 image2_alias_pix_demuxer_select="image2_demuxer"
2766 image2_brender_pix_demuxer_select="image2_demuxer"
2767 ipod_muxer_select="mov_muxer"
2768 ismv_muxer_select="mov_muxer"
2769 libnut_demuxer_deps="libnut"
2770 libnut_muxer_deps="libnut"
2771 matroska_audio_muxer_select="matroska_muxer"
2772 matroska_demuxer_select="iso_media riffdec"
2773 matroska_demuxer_suggest="bzlib lzo zlib"
2774 matroska_muxer_select="iso_media riffenc"
2775 mmf_muxer_select="riffenc"
2776 mov_demuxer_select="iso_media riffdec"
2777 mov_demuxer_suggest="zlib"
2778 mov_muxer_select="iso_media riffenc rtpenc_chain"
2779 mp3_demuxer_select="mpegaudio_parser"
2780 mp4_muxer_select="mov_muxer"
2781 mpegts_demuxer_select="iso_media"
2782 mpegts_muxer_select="adts_muxer latm_muxer"
2783 mpegtsraw_demuxer_select="mpegts_demuxer"
2784 mxf_d10_muxer_select="mxf_muxer"
2785 mxf_opatom_muxer_select="mxf_muxer"
2786 nut_muxer_select="riffenc"
2787 nuv_demuxer_select="riffdec"
2788 oga_muxer_select="ogg_muxer"
2789 ogg_demuxer_select="dirac_parse"
2790 opus_muxer_select="ogg_muxer"
2791 psp_muxer_select="mov_muxer"
2792 rtp_demuxer_select="sdp_demuxer"
2793 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2794 rtsp_demuxer_select="http_protocol rtpdec"
2795 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2796 sap_demuxer_select="sdp_demuxer"
2797 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2798 sdp_demuxer_select="rtpdec"
2799 smoothstreaming_muxer_select="ismv_muxer"
2800 spdif_muxer_select="aac_parser"
2801 spx_muxer_select="ogg_muxer"
2802 swf_demuxer_suggest="zlib"
2803 tak_demuxer_select="tak_parser"
2804 tg2_muxer_select="mov_muxer"
2805 tgp_muxer_select="mov_muxer"
2806 vobsub_demuxer_select="mpegps_demuxer"
2807 w64_demuxer_select="wav_demuxer"
2808 w64_muxer_select="wav_muxer"
2809 wav_demuxer_select="riffdec"
2810 wav_muxer_select="riffenc"
2811 webm_muxer_select="iso_media riffenc"
2812 webm_dash_manifest_demuxer_select="matroska_demuxer"
2813 wtv_demuxer_select="mpegts_demuxer riffdec"
2814 wtv_muxer_select="mpegts_muxer riffenc"
2815 xmv_demuxer_select="riffdec"
2816 xwma_demuxer_select="riffdec"
2817
2818 # indevs / outdevs
2819 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2820 alsa_outdev_deps="alsa_asoundlib_h"
2821 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2822 avfoundation_indev_select="avfoundation"
2823 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2824 caca_outdev_deps="libcaca"
2825 decklink_indev_deps="decklink pthreads"
2826 decklink_indev_extralibs="-lstdc++"
2827 decklink_outdev_deps="decklink pthreads"
2828 decklink_outdev_extralibs="-lstdc++"
2829 dshow_indev_deps="IBaseFilter"
2830 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2831 dv1394_indev_deps="dv1394"
2832 dv1394_indev_select="dv_demuxer"
2833 fbdev_indev_deps="linux_fb_h"
2834 fbdev_outdev_deps="linux_fb_h"
2835 gdigrab_indev_deps="CreateDIBSection"
2836 gdigrab_indev_extralibs="-lgdi32"
2837 gdigrab_indev_select="bmp_decoder"
2838 iec61883_indev_deps="libiec61883"
2839 jack_indev_deps="jack_jack_h"
2840 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2841 lavfi_indev_deps="avfilter"
2842 libcdio_indev_deps="libcdio"
2843 libdc1394_indev_deps="libdc1394"
2844 libv4l2_indev_deps="libv4l2"
2845 openal_indev_deps="openal"
2846 opengl_outdev_deps="opengl"
2847 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2848 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2849 pulse_indev_deps="libpulse"
2850 pulse_outdev_deps="libpulse"
2851 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2852 qtkit_indev_select="qtkit"
2853 sdl_outdev_deps="sdl"
2854 sndio_indev_deps="sndio_h"
2855 sndio_outdev_deps="sndio_h"
2856 v4l_indev_deps="linux_videodev_h"
2857 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2858 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2859 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2860 vfwcap_indev_extralibs="-lavicap32"
2861 x11grab_indev_deps="x11grab"
2862 x11grab_xcb_indev_deps="libxcb"
2863 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2864 xv_outdev_extralibs="-lXv -lX11 -lXext"
2865
2866 # protocols
2867 async_protocol_deps="threads"
2868 bluray_protocol_deps="libbluray"
2869 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2870 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2871 ffrtmpcrypt_protocol_select="tcp_protocol"
2872 ffrtmphttp_protocol_deps="!librtmp_protocol"
2873 ffrtmphttp_protocol_select="http_protocol"
2874 ftp_protocol_select="tcp_protocol"
2875 gopher_protocol_select="network"
2876 http_protocol_select="tcp_protocol"
2877 httpproxy_protocol_select="tcp_protocol"
2878 https_protocol_select="tls_protocol"
2879 icecast_protocol_select="http_protocol"
2880 librtmp_protocol_deps="librtmp"
2881 librtmpe_protocol_deps="librtmp"
2882 librtmps_protocol_deps="librtmp"
2883 librtmpt_protocol_deps="librtmp"
2884 librtmpte_protocol_deps="librtmp"
2885 libsmbclient_protocol_deps="libsmbclient gplv3"
2886 libssh_protocol_deps="libssh"
2887 mmsh_protocol_select="http_protocol"
2888 mmst_protocol_select="network"
2889 rtmp_protocol_deps="!librtmp_protocol"
2890 rtmp_protocol_select="tcp_protocol"
2891 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2892 rtmps_protocol_deps="!librtmp_protocol"
2893 rtmps_protocol_select="tls_protocol"
2894 rtmpt_protocol_select="ffrtmphttp_protocol"
2895 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2896 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2897 rtp_protocol_select="udp_protocol"
2898 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2899 sctp_protocol_select="network"
2900 srtp_protocol_select="rtp_protocol srtp"
2901 tcp_protocol_select="network"
2902 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2903 tls_gnutls_protocol_select="tcp_protocol"
2904 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2905 tls_openssl_protocol_select="tcp_protocol"
2906 tls_schannel_protocol_deps="schannel"
2907 tls_schannel_protocol_select="tcp_protocol"
2908 tls_securetransport_protocol_deps="securetransport"
2909 tls_securetransport_protocol_select="tcp_protocol"
2910 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2911 udp_protocol_select="network"
2912 udplite_protocol_select="network"
2913 unix_protocol_deps="sys_un_h"
2914 unix_protocol_select="network"
2915
2916 # filters
2917 afftfilt_filter_deps="avcodec"
2918 afftfilt_filter_select="fft"
2919 amovie_filter_deps="avcodec avformat"
2920 aresample_filter_deps="swresample"
2921 ass_filter_deps="libass"
2922 asyncts_filter_deps="avresample"
2923 atempo_filter_deps="avcodec"
2924 atempo_filter_select="rdft"
2925 azmq_filter_deps="libzmq"
2926 blackframe_filter_deps="gpl"
2927 boxblur_filter_deps="gpl"
2928 bs2b_filter_deps="libbs2b"
2929 colormatrix_filter_deps="gpl"
2930 cover_rect_filter_deps="avcodec avformat gpl"
2931 cropdetect_filter_deps="gpl"
2932 delogo_filter_deps="gpl"
2933 deshake_filter_select="pixelutils"
2934 drawtext_filter_deps="libfreetype"
2935 ebur128_filter_deps="gpl"
2936 eq_filter_deps="gpl"
2937 fftfilt_filter_deps="avcodec"
2938 fftfilt_filter_select="rdft"
2939 find_rect_filter_deps="avcodec avformat gpl"
2940 firequalizer_filter_deps="avcodec"
2941 firequalizer_filter_select="rdft"
2942 flite_filter_deps="libflite"
2943 frei0r_filter_deps="frei0r dlopen"
2944 frei0r_src_filter_deps="frei0r dlopen"
2945 fspp_filter_deps="gpl"
2946 geq_filter_deps="gpl"
2947 histeq_filter_deps="gpl"
2948 hqdn3d_filter_deps="gpl"
2949 hwupload_cuda_filter_deps="cuda"
2950 interlace_filter_deps="gpl"
2951 kerndeint_filter_deps="gpl"
2952 ladspa_filter_deps="ladspa dlopen"
2953 mcdeint_filter_deps="avcodec gpl"
2954 movie_filter_deps="avcodec avformat"
2955 mpdecimate_filter_deps="gpl"
2956 mpdecimate_filter_select="pixelutils"
2957 mptestsrc_filter_deps="gpl"
2958 negate_filter_deps="lut_filter"
2959 nnedi_filter_deps="gpl"
2960 ocr_filter_deps="libtesseract"
2961 ocv_filter_deps="libopencv"
2962 owdenoise_filter_deps="gpl"
2963 pan_filter_deps="swresample"
2964 perspective_filter_deps="gpl"
2965 phase_filter_deps="gpl"
2966 pp7_filter_deps="gpl"
2967 pp_filter_deps="gpl postproc"
2968 pullup_filter_deps="gpl"
2969 removelogo_filter_deps="avcodec avformat swscale"
2970 repeatfields_filter_deps="gpl"
2971 resample_filter_deps="avresample"
2972 rubberband_filter_deps="librubberband"
2973 sab_filter_deps="gpl swscale"
2974 scale2ref_filter_deps="swscale"
2975 scale_filter_deps="swscale"
2976 select_filter_select="pixelutils"
2977 showcqt_filter_deps="avcodec avformat swscale"
2978 showcqt_filter_select="fft"
2979 showfreqs_filter_deps="avcodec"
2980 showfreqs_filter_select="fft"
2981 showspectrum_filter_deps="avcodec"
2982 showspectrum_filter_select="fft"
2983 showspectrumpic_filter_deps="avcodec"
2984 showspectrumpic_filter_select="fft"
2985 smartblur_filter_deps="gpl swscale"
2986 sofalizer_filter_deps="netcdf avcodec"
2987 sofalizer_filter_select="fft"
2988 spectrumsynth_filter_deps="avcodec"
2989 spectrumsynth_filter_select="fft"
2990 spp_filter_deps="gpl avcodec"
2991 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2992 stereo3d_filter_deps="gpl"
2993 subtitles_filter_deps="avformat avcodec libass"
2994 super2xsai_filter_deps="gpl"
2995 pixfmts_super2xsai_test_deps="super2xsai_filter"
2996 tinterlace_filter_deps="gpl"
2997 tinterlace_merge_test_deps="tinterlace_filter"
2998 tinterlace_pad_test_deps="tinterlace_filter"
2999 uspp_filter_deps="gpl avcodec"
3000 vidstabdetect_filter_deps="libvidstab"
3001 vidstabtransform_filter_deps="libvidstab"
3002 zmq_filter_deps="libzmq"
3003 zoompan_filter_deps="swscale"
3004 zscale_filter_deps="libzimg"
3005 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3006
3007 # examples
3008 avcodec_example_deps="avcodec avutil"
3009 avio_dir_cmd="avformat avutil"
3010 avio_reading="avformat avcodec avutil"
3011 decoding_encoding_example_deps="avcodec avformat avutil"
3012 demuxing_decoding_example_deps="avcodec avformat avutil"
3013 extract_mvs_example_deps="avcodec avformat avutil"
3014 filter_audio_example_deps="avfilter avutil"
3015 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3016 filtering_video_example_deps="avfilter avcodec avformat avutil"
3017 metadata_example_deps="avformat avutil"
3018 muxing_example_deps="avcodec avformat avutil swscale"
3019 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3020 remuxing_example_deps="avcodec avformat avutil"
3021 resampling_audio_example_deps="avutil swresample"
3022 scaling_video_example_deps="avutil swscale"
3023 transcode_aac_example_deps="avcodec avformat swresample"
3024 transcoding_example_deps="avfilter avcodec avformat avutil"
3025
3026 # libraries, in linking order
3027 avcodec_deps="avutil"
3028 avdevice_deps="avformat avcodec avutil"
3029 avfilter_deps="avutil"
3030 avformat_deps="avcodec avutil"
3031 avresample_deps="avutil"
3032 postproc_deps="avutil gpl"
3033 swresample_deps="avutil"
3034 swscale_deps="avutil"
3035
3036 # programs
3037 ffmpeg_deps="avcodec avfilter avformat swresample"
3038 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3039                null_filter
3040                setpts_filter trim_filter"
3041 ffplay_deps="avcodec avformat swscale swresample sdl"
3042 ffplay_libs='$sdl_libs'
3043 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3044 ffprobe_deps="avcodec avformat"
3045 ffserver_deps="avformat fork sarestart"
3046 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3047
3048 # documentation
3049 podpages_deps="perl"
3050 manpages_deps="perl pod2man"
3051 htmlpages_deps="perl"
3052 htmlpages_deps_any="makeinfo_html texi2html"
3053 txtpages_deps="perl makeinfo"
3054 doc_deps_any="manpages htmlpages podpages txtpages"
3055
3056 # default parameters
3057
3058 logfile="config.log"
3059
3060 # installation paths
3061 prefix_default="/usr/local"
3062 bindir_default='${prefix}/bin'
3063 datadir_default='${prefix}/share/ffmpeg'
3064 docdir_default='${prefix}/share/doc/ffmpeg'
3065 incdir_default='${prefix}/include'
3066 libdir_default='${prefix}/lib'
3067 mandir_default='${prefix}/share/man'
3068
3069 # toolchain
3070 ar_default="ar"
3071 cc_default="gcc"
3072 cxx_default="g++"
3073 host_cc_default="gcc"
3074 cp_f="cp -f"
3075 doxygen_default="doxygen"
3076 install="install"
3077 ln_s="ln -s -f"
3078 nm_default="nm -g"
3079 objformat="elf"
3080 pkg_config_default=pkg-config
3081 ranlib_default="ranlib"
3082 strip_default="strip"
3083 yasmexe_default="yasm"
3084 windres_default="windres"
3085
3086 # OS
3087 target_os_default=$(tolower $(uname -s))
3088 host_os=$target_os_default
3089
3090 # machine
3091 if test "$target_os_default" = aix; then
3092     arch_default=$(uname -p)
3093     strip_default="strip -X32_64"
3094 else
3095     arch_default=$(uname -m)
3096 fi
3097 cpu="generic"
3098 intrinsics="none"
3099
3100 # configurable options
3101 enable $PROGRAM_LIST
3102 enable $DOCUMENT_LIST
3103 enable $EXAMPLE_LIST
3104 enable $(filter_out avresample $LIBRARY_LIST)
3105 enable stripping
3106
3107 enable asm
3108 enable debug
3109 enable doc
3110 enable faan faandct faanidct
3111 enable optimizations
3112 enable runtime_cpudetect
3113 enable safe_bitstream_reader
3114 enable static
3115 enable swscale_alpha
3116 enable valgrind_backtrace
3117
3118 sws_max_filter_size_default=256
3119 set_default sws_max_filter_size
3120
3121 # Enable platform codecs by default.
3122 enable audiotoolbox
3123
3124 # Enable hwaccels by default.
3125 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3126 enable xlib
3127
3128 enable vda_framework videotoolbox videotoolbox_encoder
3129
3130 # build settings
3131 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3132 LIBPREF="lib"
3133 LIBSUF=".a"
3134 FULLNAME='$(NAME)$(BUILDSUF)'
3135 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3136 SLIBPREF="lib"
3137 SLIBSUF=".so"
3138 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3139 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3140 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3141 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3142 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3143 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3144
3145 asflags_filter=echo
3146 cflags_filter=echo
3147 ldflags_filter=echo
3148
3149 AS_C='-c'
3150 AS_O='-o $@'
3151 CC_C='-c'
3152 CC_E='-E -o $@'
3153 CC_O='-o $@'
3154 CXX_C='-c'
3155 CXX_O='-o $@'
3156 OBJCC_C='-c'
3157 OBJCC_E='-E -o $@'
3158 OBJCC_O='-o $@'
3159 LD_O='-o $@'
3160 LD_LIB='-l%'
3161 LD_PATH='-L'
3162 HOSTCC_C='-c'
3163 HOSTCC_E='-E -o $@'
3164 HOSTCC_O='-o $@'
3165 HOSTLD_O='-o $@'
3166
3167 host_libs='-lm'
3168 host_cflags_filter=echo
3169 host_ldflags_filter=echo
3170
3171 target_path='$(CURDIR)'
3172
3173 # since the object filename is not given with the -MM flag, the compiler
3174 # is only able to print the basename, and we must add the path ourselves
3175 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3176 DEPFLAGS='-MM'
3177
3178 # find source path
3179 if test -f configure; then
3180     source_path=.
3181 else
3182     source_path=$(cd $(dirname "$0"); pwd)
3183     case "$source_path" in
3184         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3185     esac
3186     test -e "$source_path/config.h" &&
3187         die "Out of tree builds are impossible with config.h in source dir."
3188 fi
3189
3190 for v in "$@"; do
3191     r=${v#*=}
3192     l=${v%"$r"}
3193     r=$(sh_quote "$r")
3194     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3195 done
3196
3197 find_things(){
3198     thing=$1
3199     pattern=$2
3200     file=$source_path/$3
3201     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3202 }
3203
3204 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3205 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3206 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3207 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3208 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3209 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3210 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3211 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3212 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3213
3214 find_things_extern(){
3215     thing=$1
3216     pattern=$2
3217     file=$source_path/$3
3218     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3219 }
3220
3221 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3222 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3223
3224 ALL_COMPONENTS="
3225     $BSF_LIST
3226     $DECODER_LIST
3227     $DEMUXER_LIST
3228     $ENCODER_LIST
3229     $FILTER_LIST
3230     $HWACCEL_LIST
3231     $INDEV_LIST
3232     $MUXER_LIST
3233     $OUTDEV_LIST
3234     $PARSER_LIST
3235     $PROTOCOL_LIST
3236 "
3237
3238 for n in $COMPONENT_LIST; do
3239     v=$(toupper ${n%s})_LIST
3240     eval enable \$$v
3241     eval ${n}_if_any="\$$v"
3242 done
3243
3244 enable $ARCH_EXT_LIST
3245
3246 die_unknown(){
3247     echo "Unknown option \"$1\"."
3248     echo "See $0 --help for available options."
3249     exit 1
3250 }
3251
3252 print_in_columns() {
3253     cols=$(expr $ncols / 24)
3254     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3255 }
3256
3257 show_list() {
3258     suffix=_$1
3259     shift
3260     echo $* | sed s/$suffix//g | print_in_columns
3261     exit 0
3262 }
3263
3264 rand_list(){
3265     IFS=', '
3266     set -- $*
3267     unset IFS
3268     for thing; do
3269         comp=${thing%:*}
3270         prob=${thing#$comp}
3271         prob=${prob#:}
3272         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3273         echo "prob ${prob:-0.5}"
3274         printf '%s\n' $comp
3275     done
3276 }
3277
3278 do_random(){
3279     action=$1
3280     shift
3281     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3282     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3283 }
3284
3285 for opt do
3286     optval="${opt#*=}"
3287     case "$opt" in
3288         --extra-ldflags=*)
3289             add_ldflags $optval
3290         ;;
3291         --extra-ldexeflags=*)
3292             add_ldexeflags $optval
3293         ;;
3294         --extra-ldlibflags=*)
3295             add_ldlibflags $optval
3296         ;;
3297         --extra-libs=*)
3298             add_extralibs $optval
3299         ;;
3300         --disable-devices)
3301             disable $INDEV_LIST $OUTDEV_LIST
3302         ;;
3303         --enable-debug=*)
3304             debuglevel="$optval"
3305         ;;
3306         --disable-programs)
3307             disable $PROGRAM_LIST
3308         ;;
3309         --disable-everything)
3310             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3311         ;;
3312         --disable-all)
3313             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3314             disable $LIBRARY_LIST $PROGRAM_LIST doc
3315             enable avutil
3316         ;;
3317         --enable-random|--disable-random)
3318             action=${opt%%-random}
3319             do_random ${action#--} $COMPONENT_LIST
3320         ;;
3321         --enable-random=*|--disable-random=*)
3322             action=${opt%%-random=*}
3323             do_random ${action#--} $optval
3324         ;;
3325         --enable-*=*|--disable-*=*)
3326             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3327             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3328             eval list=\$$(toupper $thing)_LIST
3329             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3330             list=$(filter "$name" $list)
3331             [ "$list" = "" ] && warn "Option $opt did not match anything"
3332             $action $list
3333         ;;
3334         --enable-?*|--disable-?*)
3335             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3336             if is_in $option $COMPONENT_LIST; then
3337                 test $action = disable && action=unset
3338                 eval $action \$$(toupper ${option%s})_LIST
3339             elif is_in $option $CMDLINE_SELECT; then
3340                 $action $option
3341             else
3342                 die_unknown $opt
3343             fi
3344         ;;
3345         --list-*)
3346             NAME="${opt#--list-}"
3347             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3348             NAME=${NAME%s}
3349             eval show_list $NAME \$$(toupper $NAME)_LIST
3350         ;;
3351         --help|-h) show_help
3352         ;;
3353         --fatal-warnings) enable fatal_warnings
3354         ;;
3355         *)
3356             optname="${opt%%=*}"
3357             optname="${optname#--}"
3358             optname=$(echo "$optname" | sed 's/-/_/g')
3359             if is_in $optname $CMDLINE_SET; then
3360                 eval $optname='$optval'
3361             elif is_in $optname $CMDLINE_APPEND; then
3362                 append $optname "$optval"
3363             else
3364                 die_unknown $opt
3365             fi
3366         ;;
3367     esac
3368 done
3369
3370 for e in $env; do
3371     eval "export $e"
3372 done
3373
3374 disabled logging && logfile=/dev/null
3375
3376 # Disable all the library-specific components if the library itself
3377 # is disabled, see AVCODEC_LIST and following _LIST variables.
3378
3379 disable_components(){
3380     disabled ${1} && disable $(
3381         eval components="\$$(toupper ${1})_COMPONENTS"
3382         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3383     )
3384 }
3385
3386 map 'disable_components $v' $LIBRARY_LIST
3387
3388 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3389 set >> $logfile
3390
3391 test -n "$valgrind" && toolchain="valgrind-memcheck"
3392
3393 case "$toolchain" in
3394     *-asan)
3395         cc_default="${toolchain%-asan}"
3396         add_cflags  -fsanitize=address
3397         add_ldflags -fsanitize=address
3398     ;;
3399     *-msan)
3400         cc_default="${toolchain%-msan}"
3401         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3402         add_ldflags -fsanitize=memory
3403     ;;
3404     *-tsan)
3405         cc_default="${toolchain%-tsan}"
3406         add_cflags  -fsanitize=thread -pie
3407         add_ldflags -fsanitize=thread -pie
3408         case "$toolchain" in
3409             gcc-tsan)
3410                 add_cflags  -fPIC
3411                 add_ldflags -fPIC
3412                 ;;
3413         esac
3414     ;;
3415     *-usan)
3416         cc_default="${toolchain%-usan}"
3417         add_cflags  -fsanitize=undefined
3418         add_ldflags -fsanitize=undefined
3419     ;;
3420     valgrind-*)
3421         target_exec_default="valgrind"
3422         case "$toolchain" in
3423             valgrind-massif)
3424                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3425                 ;;
3426             valgrind-memcheck)
3427                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3428                 ;;
3429         esac
3430     ;;
3431     msvc)
3432         # Check whether the current MSVC version needs the C99 converter.
3433         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3434         # support enough of C99 to build ffmpeg. Default to the new
3435         # behaviour if the regexp was unable to match anything, since this
3436         # successfully parses the version number of existing supported
3437         # versions that require the converter (MSVC 2010 and 2012).
3438         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3439         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3440             cc_default="cl"
3441         else
3442             cc_default="c99wrap cl"
3443         fi
3444         ld_default="$source_path/compat/windows/mslink"
3445         nm_default="dumpbin -symbols"
3446         ar_default="lib"
3447         case "$arch" in
3448         arm*)
3449             as_default="armasm"
3450             ;;
3451         esac
3452         target_os_default="win32"
3453         # Use a relative path for TMPDIR. This makes sure all the
3454         # ffconf temp files are written with a relative path, avoiding
3455         # issues with msys/win32 path conversion for MSVC parameters
3456         # such as -Fo<file> or -out:<file>.
3457         TMPDIR=.
3458     ;;
3459     icl)
3460         cc_default="icl"
3461         ld_default="xilink"
3462         nm_default="dumpbin -symbols"
3463         ar_default="xilib"
3464         target_os_default="win32"
3465         TMPDIR=.
3466     ;;
3467     gcov)
3468         add_cflags  -fprofile-arcs -ftest-coverage
3469         add_ldflags -fprofile-arcs -ftest-coverage
3470     ;;
3471     llvm-cov)
3472         add_cflags -fprofile-arcs -ftest-coverage
3473         add_ldflags --coverage
3474     ;;
3475     hardened)
3476         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3477         add_cflags   -fno-strict-overflow -fstack-protector-all
3478         add_ldflags  -Wl,-z,relro -Wl,-z,now
3479     ;;
3480     ?*)
3481         die "Unknown toolchain $toolchain"
3482     ;;
3483 esac
3484
3485 test -n "$cross_prefix" && enable cross_compile
3486
3487 if enabled cross_compile; then
3488     test -n "$arch" && test -n "$target_os" ||
3489         die "Must specify target arch and OS when cross-compiling"
3490 fi
3491
3492 ar_default="${cross_prefix}${ar_default}"
3493 cc_default="${cross_prefix}${cc_default}"
3494 cxx_default="${cross_prefix}${cxx_default}"
3495 nm_default="${cross_prefix}${nm_default}"
3496 pkg_config_default="${cross_prefix}${pkg_config_default}"
3497 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3498     ranlib_default="${cross_prefix}${ranlib_default} -D"
3499 else
3500     ranlib_default="${cross_prefix}${ranlib_default}"
3501 fi
3502 strip_default="${cross_prefix}${strip_default}"
3503 windres_default="${cross_prefix}${windres_default}"
3504
3505 sysinclude_default="${sysroot}/usr/include"
3506
3507 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3508     target_exec target_os yasmexe
3509 enabled cross_compile || host_cc_default=$cc
3510 set_default host_cc
3511
3512 pkg_config_fail_message=""
3513 if ! $pkg_config --version >/dev/null 2>&1; then
3514     warn "$pkg_config not found, library detection may fail."
3515     pkg_config=false
3516 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3517     pkg_config_fail_message="
3518 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3519 fi
3520
3521 if test $doxygen != $doxygen_default && \
3522   ! $doxygen --version >/dev/null 2>&1; then
3523     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3524 fi
3525
3526 exesuf() {
3527     case $1 in
3528         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3529     esac
3530 }
3531
3532 EXESUF=$(exesuf $target_os)
3533 HOSTEXESUF=$(exesuf $host_os)
3534
3535 # set temporary file name
3536 : ${TMPDIR:=$TEMPDIR}
3537 : ${TMPDIR:=$TMP}
3538 : ${TMPDIR:=/tmp}
3539
3540 if [ -n "$tempprefix" ] ; then
3541     mktemp(){
3542         echo $tempprefix.${HOSTNAME}.${UID}
3543     }
3544 elif ! check_cmd mktemp -u XXXXXX; then
3545     # simple replacement for missing mktemp
3546     # NOT SAFE FOR GENERAL USE
3547     mktemp(){
3548         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3549     }
3550 fi
3551
3552 tmpfile(){
3553     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3554         (set -C; exec > $tmp) 2>/dev/null ||
3555         die "Unable to create temporary file in $TMPDIR."
3556     append TMPFILES $tmp
3557     eval $1=$tmp
3558 }
3559
3560 trap 'rm -f -- $TMPFILES' EXIT
3561
3562 tmpfile TMPASM .asm
3563 tmpfile TMPC   .c
3564 tmpfile TMPCPP .cpp
3565 tmpfile TMPE   $EXESUF
3566 tmpfile TMPH   .h
3567 tmpfile TMPM   .m
3568 tmpfile TMPO   .o
3569 tmpfile TMPS   .S
3570 tmpfile TMPSH  .sh
3571 tmpfile TMPV   .ver
3572
3573 unset -f mktemp
3574
3575 chmod +x $TMPE
3576
3577 # make sure we can execute files in $TMPDIR
3578 cat > $TMPSH 2>> $logfile <<EOF
3579 #! /bin/sh
3580 EOF
3581 chmod +x $TMPSH >> $logfile 2>&1
3582 if ! $TMPSH >> $logfile 2>&1; then
3583     cat <<EOF
3584 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3585 variable to another directory and make sure that it is not mounted noexec.
3586 EOF
3587     die "Sanity test failed."
3588 fi
3589
3590 armasm_flags(){
3591     for flag; do
3592         case $flag in
3593             # Filter out MSVC cl.exe options from cflags that shouldn't
3594             # be passed to gas-preprocessor
3595             -M[TD]*)                                            ;;
3596             *)                  echo $flag                      ;;
3597         esac
3598    done
3599 }
3600
3601 ccc_flags(){
3602     for flag; do
3603         case $flag in
3604             -std=c99)           echo -c99                       ;;
3605             -mcpu=*)            echo -arch ${flag#*=}           ;;
3606             -mieee)             echo -ieee                      ;;
3607             -O*|-fast)          echo $flag                      ;;
3608             -fno-math-errno)    echo -assume nomath_errno       ;;
3609             -g)                 echo -g3                        ;;
3610             -Wall)              echo -msg_enable level2         ;;
3611             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3612             -Wl,*)              echo $flag                      ;;
3613             -f*|-W*)                                            ;;
3614             *)                  echo $flag                      ;;
3615         esac
3616    done
3617 }
3618
3619 cparser_flags(){
3620     for flag; do
3621         case $flag in
3622             -Wno-switch)             echo -Wno-switch-enum ;;
3623             -Wno-format-zero-length) ;;
3624             -Wdisabled-optimization) ;;
3625             -Wno-pointer-sign)       echo -Wno-other ;;
3626             *)                       echo $flag ;;
3627         esac
3628     done
3629 }
3630
3631 msvc_common_flags(){
3632     for flag; do
3633         case $flag in
3634             # In addition to specifying certain flags under the compiler
3635             # specific filters, they must be specified here as well or else the
3636             # generic catch all at the bottom will print the original flag.
3637             -Wall)                ;;
3638             -std=c99)             ;;
3639             # Common flags
3640             -fomit-frame-pointer) ;;
3641             -g)                   echo -Z7 ;;
3642             -fno-math-errno)      ;;
3643             -fno-common)          ;;
3644             -fno-signed-zeros)    ;;
3645             -fPIC)                ;;
3646             -mthumb)              ;;
3647             -march=*)             ;;
3648             -lz)                  echo zlib.lib ;;
3649             -lavifil32)           echo vfw32.lib ;;
3650             -lavicap32)           echo vfw32.lib user32.lib ;;
3651             -lx264)               echo libx264.lib ;;
3652             -l*)                  echo ${flag#-l}.lib ;;
3653             -LARGEADDRESSAWARE)   echo $flag ;;
3654             -L*)                  echo -libpath:${flag#-L} ;;
3655             *)                    echo $flag ;;
3656         esac
3657     done
3658 }
3659
3660 msvc_flags(){
3661     msvc_common_flags "$@"
3662     for flag; do
3663         case $flag in
3664             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3665                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3666                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3667                                        -wd4307 \
3668                                        -wd4273 -wd4554 -wd4701 ;;
3669         esac
3670     done
3671 }
3672
3673 icl_flags(){
3674     msvc_common_flags "$@"
3675     for flag; do
3676         case $flag in
3677             # Despite what Intel's documentation says -Wall, which is supported
3678             # on Windows, does enable remarks so disable them here.
3679             -Wall)                echo $flag -Qdiag-disable:remark ;;
3680             -std=c99)             echo -Qstd=c99 ;;
3681             -flto)                echo -ipo ;;
3682         esac
3683     done
3684 }
3685
3686 icc_flags(){
3687     for flag; do
3688         case $flag in
3689             -flto)                echo -ipo ;;
3690             *)                    echo $flag ;;
3691         esac
3692     done
3693 }
3694
3695 pgi_flags(){
3696     for flag; do
3697         case $flag in
3698             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3699             -fomit-frame-pointer) echo -Mnoframe ;;
3700             -g)                   echo -gopt ;;
3701             *)                    echo $flag ;;
3702         esac
3703     done
3704 }
3705
3706 suncc_flags(){
3707     for flag; do
3708         case $flag in
3709             -march=*|-mcpu=*)
3710                 case "${flag#*=}" in
3711                     native)                   echo -xtarget=native       ;;
3712                     v9|niagara)               echo -xarch=sparc          ;;
3713                     ultrasparc)               echo -xarch=sparcvis       ;;
3714                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3715                     i586|pentium)             echo -xchip=pentium        ;;
3716                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3717                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3718                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3719                     pentium4*)          echo -xtarget=pentium4           ;;
3720                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3721                     *-sse3)             echo -xarch=sse3                 ;;
3722                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3723                     bonnell)                   echo -xarch=ssse3         ;;
3724                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3725                     westmere)                  echo -xtarget=westmere    ;;
3726                     silvermont)                echo -xarch=sse4_2        ;;
3727                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3728                     core-avx*|ivybridge|haswell|broadwell)
3729                                                echo -xarch=avx           ;;
3730                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3731                     btver1)                    echo -xarch=amdsse4a      ;;
3732                     btver2|bdver*)             echo -xarch=avx           ;;
3733                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3734                     k8|opteron|athlon64|athlon-fx)
3735                                                echo -xarch=sse2a         ;;
3736                     athlon*)                   echo -xarch=pentium_proa  ;;
3737                 esac
3738                 ;;
3739             -std=c99)             echo -xc99              ;;
3740             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3741             -fPIC)                echo -KPIC -xcode=pic32 ;;
3742             -W*,*)                echo $flag              ;;
3743             -f*-*|-W*|-mimpure-text)                      ;;
3744             -shared)              echo -G                 ;;
3745             *)                    echo $flag              ;;
3746         esac
3747     done
3748 }
3749
3750 tms470_flags(){
3751     for flag; do
3752         case $flag in
3753             -march=*|-mcpu=*)
3754                 case "${flag#*=}" in
3755                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3756                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3757                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3758                     armv6*|arm11*)          echo -mv=6   ;;
3759                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3760                                             echo -mv=5e  ;;
3761                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3762                 esac
3763                 ;;
3764             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3765             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3766             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3767             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3768             -msoft-float)   echo --float_support=vfplib       ;;
3769             -O[0-3]|-mf=*)  echo $flag                        ;;
3770             -g)             echo -g -mn                       ;;
3771             -pds=*)         echo $flag                        ;;
3772             -D*|-I*)        echo $flag                        ;;
3773             --gcc|--abi=*)  echo $flag                        ;;
3774             -me)            echo $flag                        ;;
3775         esac
3776     done
3777 }
3778
3779 probe_cc(){
3780     pfx=$1
3781     _cc=$2
3782     first=$3
3783
3784     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3785     unset _ld_o _ldflags _ld_lib _ld_path
3786     unset _depflags _DEPCMD _DEPFLAGS
3787     _flags_filter=echo
3788
3789     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3790         true # no-op to avoid reading stdin in following checks
3791     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3792         _type=llvm_gcc
3793         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3794         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3795         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3796         _cflags_speed='-O3'
3797         _cflags_size='-Os'
3798     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3799         _type=gcc
3800         gcc_version=$($_cc --version | head -n1)
3801         gcc_basever=$($_cc -dumpversion)
3802         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3803         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3804         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3805         case $gcc_basever in
3806             2) ;;
3807             2.*) ;;
3808             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3809         esac
3810         if [ "$first" = true ]; then
3811             case $gcc_basever in
3812                 4.2*)
3813                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3814             esac
3815         fi
3816         _cflags_speed='-O3'
3817         _cflags_size='-Os'
3818     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3819         _type=icc
3820         _ident=$($_cc --version | head -n1)
3821         _depflags='-MMD'
3822         _cflags_speed='-O3'
3823         _cflags_size='-Os'
3824         _cflags_noopt='-O1'
3825         _flags_filter=icc_flags
3826     elif $_cc -v 2>&1 | grep -q xlc; then
3827         _type=xlc
3828         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3829         _cflags_speed='-O5'
3830         _cflags_size='-O5 -qcompact'
3831     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3832         _type=ccc
3833         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3834         _DEPFLAGS='-M'
3835         _cflags_speed='-fast'
3836         _cflags_size='-O1'
3837         _flags_filter=ccc_flags
3838     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3839         test -d "$sysroot" || die "No valid sysroot specified."
3840         _type=armcc
3841         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3842         armcc_conf="$PWD/armcc.conf"
3843         $_cc --arm_linux_configure                 \
3844              --arm_linux_config_file="$armcc_conf" \
3845              --configure_sysroot="$sysroot"        \
3846              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3847              die "Error creating armcc configuration file."
3848         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3849         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3850         as_default="${cross_prefix}gcc"
3851         _depflags='-MMD'
3852         _cflags_speed='-O3'
3853         _cflags_size='-Os'
3854     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3855         _type=tms470
3856         _ident=$($_cc -version | head -n1 | tr -s ' ')
3857         _flags='--gcc --abi=eabi -me'
3858         _cc_e='-ppl -fe=$@'
3859         _cc_o='-fe=$@'
3860         _depflags='-ppa -ppd=$(@:.o=.d)'
3861         _cflags_speed='-O3 -mf=5'
3862         _cflags_size='-O3 -mf=2'
3863         _flags_filter=tms470_flags
3864     elif $_cc -v 2>&1 | grep -q clang; then
3865         _type=clang
3866         _ident=$($_cc --version 2>/dev/null | head -n1)
3867         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3868         _cflags_speed='-O3'
3869         _cflags_size='-Os'
3870     elif $_cc -V 2>&1 | grep -q Sun; then
3871         _type=suncc
3872         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3873         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3874         _DEPFLAGS='-xM1 -xc99'
3875         _ldflags='-std=c99'
3876         _cflags_speed='-O5'
3877         _cflags_size='-O5 -xspace'
3878         _flags_filter=suncc_flags
3879     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3880         _type=pathscale
3881         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3882         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3883         _cflags_speed='-O2'
3884         _cflags_size='-Os'
3885         _flags_filter='filter_out -Wdisabled-optimization'
3886     elif $_cc -v 2>&1 | grep -q Open64; then
3887         _type=open64
3888         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3889         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3890         _cflags_speed='-O2'
3891         _cflags_size='-Os'
3892         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3893     elif $_cc -V 2>&1 | grep -q Portland; then
3894         _type=pgi
3895         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3896         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3897         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3898         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3899         _cflags_noopt="-O"
3900         _flags_filter=pgi_flags
3901     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3902         _type=armasm
3903         _ident=$($_cc | head -n1)
3904         # 4509: "This form of conditional instruction is deprecated"
3905         _flags="-nologo -ignore 4509"
3906         _flags_filter=armasm_flags
3907     elif $_cc 2>&1 | grep -q Intel; then
3908         _type=icl
3909         _ident=$($_cc 2>&1 | head -n1)
3910         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3911         # Not only is O3 broken on 13.x+ but it is slower on all previous
3912         # versions (tested) as well.
3913         _cflags_speed="-O2"
3914         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3915         if $_cc 2>&1 | grep -q Linker; then
3916             _ld_o='-out:$@'
3917         else
3918             _ld_o='-Fe$@'
3919         fi
3920         _cc_o='-Fo$@'
3921         _cc_e='-P'
3922         _flags_filter=icl_flags
3923         _ld_lib='lib%.a'
3924         _ld_path='-libpath:'
3925         # -Qdiag-error to make icl error when seeing certain unknown arguments
3926         _flags='-nologo -Qdiag-error:4044,10157'
3927         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3928         # with MSVC which enables it by default.
3929         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3930         disable stripping
3931     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3932         _type=msvc
3933         _ident=$($_cc 2>&1 | head -n1)
3934         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3935         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3936         _cflags_speed="-O2"
3937         _cflags_size="-O1"
3938         if $_cc -nologo- 2>&1 | grep -q Linker; then
3939             _ld_o='-out:$@'
3940         else
3941             _ld_o='-Fe$@'
3942         fi
3943         _cc_o='-Fo$@'
3944         _cc_e='-P -Fi$@'
3945         _flags_filter=msvc_flags
3946         _ld_lib='lib%.a'
3947         _ld_path='-libpath:'
3948         _flags='-nologo'
3949         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3950         disable stripping
3951     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3952         _type=cparser
3953         _ident=$($_cc --version | head -n1)
3954         _depflags='-MMD'
3955         _cflags_speed='-O4'
3956         _cflags_size='-O2'
3957         _flags_filter=cparser_flags
3958     fi
3959
3960     eval ${pfx}_type=\$_type
3961     eval ${pfx}_ident=\$_ident
3962 }
3963
3964 set_ccvars(){
3965     eval ${1}_C=\${_cc_c-\${${1}_C}}
3966     eval ${1}_E=\${_cc_e-\${${1}_E}}
3967     eval ${1}_O=\${_cc_o-\${${1}_O}}
3968
3969     if [ -n "$_depflags" ]; then
3970         eval ${1}_DEPFLAGS=\$_depflags
3971     else
3972         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3973         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3974         eval DEP${1}FLAGS=\$_flags
3975     fi
3976 }
3977
3978 probe_cc cc "$cc" "true"
3979 cflags_filter=$_flags_filter
3980 cflags_speed=$_cflags_speed
3981 cflags_size=$_cflags_size
3982 cflags_noopt=$_cflags_noopt
3983 add_cflags $_flags $_cflags
3984 cc_ldflags=$_ldflags
3985 set_ccvars CC
3986
3987 probe_cc hostcc "$host_cc"
3988 host_cflags_filter=$_flags_filter
3989 add_host_cflags  $_flags $_cflags
3990 set_ccvars HOSTCC
3991
3992 test -n "$cc_type" && enable $cc_type ||
3993     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3994
3995 : ${as_default:=$cc}
3996 : ${objcc_default:=$cc}
3997 : ${dep_cc_default:=$cc}
3998 : ${ld_default:=$cc}
3999 : ${host_ld_default:=$host_cc}
4000 set_default ar as objcc dep_cc ld host_ld windres
4001
4002 probe_cc as "$as"
4003 asflags_filter=$_flags_filter
4004 add_asflags $_flags $_cflags
4005 set_ccvars AS
4006
4007 probe_cc objcc "$objcc"
4008 objcflags_filter=$_flags_filter
4009 add_objcflags $_flags $_cflags
4010 set_ccvars OBJC
4011
4012 probe_cc ld "$ld"
4013 ldflags_filter=$_flags_filter
4014 add_ldflags $_flags $_ldflags
4015 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4016 LD_O=${_ld_o-$LD_O}
4017 LD_LIB=${_ld_lib-$LD_LIB}
4018 LD_PATH=${_ld_path-$LD_PATH}
4019
4020 probe_cc hostld "$host_ld"
4021 host_ldflags_filter=$_flags_filter
4022 add_host_ldflags $_flags $_ldflags
4023 HOSTLD_O=${_ld_o-$HOSTLD_O}
4024
4025 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4026     probe_cc depcc "$dep_cc"
4027     CCDEP=${_DEPCMD:-$DEPCMD}
4028     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4029     DEPCCFLAGS=$_flags
4030 fi
4031
4032 if $ar 2>&1 | grep -q Microsoft; then
4033     arflags="-nologo"
4034     ar_o='-out:$@'
4035 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4036     arflags="rq"
4037     ar_o='$@'
4038 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4039     arflags='-Xany -r -c'
4040     ar_o='$@'
4041 elif $ar 2>&1 | grep -q "\[D\] "; then
4042     arflags="rcD"
4043     ar_o='$@'
4044 else
4045     arflags="rc"
4046     ar_o='$@'
4047 fi
4048
4049 add_cflags $extra_cflags
4050 add_cxxflags $extra_cxxflags
4051 add_objcflags $extra_objcflags
4052 add_asflags $extra_cflags
4053
4054 if test -n "$sysroot"; then
4055     case "$cc_type" in
4056         gcc|llvm_gcc|clang)
4057             add_cppflags --sysroot="$sysroot"
4058             add_ldflags --sysroot="$sysroot"
4059 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4060             add_cppflags -isysroot "$sysroot"
4061             add_ldflags -isysroot "$sysroot"
4062         ;;
4063         tms470)
4064             add_cppflags -I"$sysinclude"
4065             add_ldflags  --sysroot="$sysroot"
4066         ;;
4067     esac
4068 fi
4069
4070 if test "$cpu" = host; then
4071     enabled cross_compile &&
4072         die "--cpu=host makes no sense when cross-compiling."
4073
4074     case "$cc_type" in
4075         gcc|llvm_gcc)
4076             check_native(){
4077                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4078                 sed -n "/cc1.*$1=/{
4079                             s/.*$1=\\([^ ]*\\).*/\\1/
4080                             p
4081                             q
4082                         }" $TMPE
4083             }
4084             cpu=$(check_native -march || check_native -mcpu)
4085         ;;
4086         clang)
4087             check_native(){
4088                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4089                 sed -n "/cc1.*-target-cpu /{
4090                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4091                             p
4092                             q
4093                         }" $TMPE
4094             }
4095             cpu=$(check_native -march)
4096         ;;
4097     esac
4098
4099     test "${cpu:-host}" = host &&
4100         die "--cpu=host not supported with compiler $cc"
4101 fi
4102
4103 # Deal with common $arch aliases
4104 case "$arch" in
4105     aarch64|arm64)
4106         arch="aarch64"
4107     ;;
4108     arm*|iPad*|iPhone*)
4109         arch="arm"
4110     ;;
4111     mips*|IP*)
4112         case "$arch" in
4113         *el)
4114             add_cppflags -EL
4115             add_ldflags -EL
4116         ;;
4117         *eb)
4118             add_cppflags -EB
4119             add_ldflags -EB
4120         ;;
4121         esac
4122         arch="mips"
4123     ;;
4124     parisc*|hppa*)
4125         arch="parisc"
4126     ;;
4127     "Power Macintosh"|ppc*|powerpc*)
4128         arch="ppc"
4129     ;;
4130     s390|s390x)
4131         arch="s390"
4132     ;;
4133     sh4|sh)
4134         arch="sh4"
4135     ;;
4136     sun4u|sparc*)
4137         arch="sparc"
4138     ;;
4139     tilegx|tile-gx)
4140         arch="tilegx"
4141     ;;
4142     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4143         arch="x86"
4144     ;;
4145 esac
4146
4147 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4148 enable $arch
4149
4150 # Add processor-specific flags
4151 if enabled aarch64; then
4152
4153     case $cpu in
4154         armv*)
4155             cpuflags="-march=$cpu"
4156         ;;
4157         *)
4158             cpuflags="-mcpu=$cpu"
4159         ;;
4160     esac
4161
4162 elif enabled alpha; then
4163
4164     cpuflags="-mcpu=$cpu"
4165
4166 elif enabled arm; then
4167
4168     check_arm_arch() {
4169         check_cpp_condition stddef.h \
4170             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4171             $cpuflags
4172     }
4173
4174     probe_arm_arch() {
4175         if   check_arm_arch 4;        then echo armv4;
4176         elif check_arm_arch 4T;       then echo armv4t;
4177         elif check_arm_arch 5;        then echo armv5;
4178         elif check_arm_arch 5E;       then echo armv5e;
4179         elif check_arm_arch 5T;       then echo armv5t;
4180         elif check_arm_arch 5TE;      then echo armv5te;
4181         elif check_arm_arch 5TEJ;     then echo armv5te;
4182         elif check_arm_arch 6;        then echo armv6;
4183         elif check_arm_arch 6J;       then echo armv6j;
4184         elif check_arm_arch 6K;       then echo armv6k;
4185         elif check_arm_arch 6Z;       then echo armv6z;
4186         elif check_arm_arch 6ZK;      then echo armv6zk;
4187         elif check_arm_arch 6T2;      then echo armv6t2;
4188         elif check_arm_arch 7;        then echo armv7;
4189         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4190         elif check_arm_arch 7S;       then echo armv7-a;
4191         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4192         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4193         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4194         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4195         fi
4196     }
4197
4198     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4199
4200     case $cpu in
4201         armv*)
4202             cpuflags="-march=$cpu"
4203             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4204         ;;
4205         *)
4206             cpuflags="-mcpu=$cpu"
4207             case $cpu in
4208                 cortex-a*)                               subarch=armv7a  ;;
4209                 cortex-r*)                               subarch=armv7r  ;;
4210                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4211                 arm11*)                                  subarch=armv6   ;;
4212                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4213                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4214                 *)                             subarch=$(probe_arm_arch) ;;
4215             esac
4216         ;;
4217     esac
4218
4219     case "$subarch" in
4220         armv5t*)    enable fast_clz                ;;
4221         armv[6-8]*)
4222             enable fast_clz
4223             disabled fast_unaligned || enable fast_unaligned
4224             ;;
4225     esac
4226
4227 elif enabled avr32; then
4228
4229     case $cpu in
4230         ap7[02]0[0-2])
4231             subarch="avr32_ap"
4232             cpuflags="-mpart=$cpu"
4233         ;;
4234         ap)
4235             subarch="avr32_ap"
4236             cpuflags="-march=$cpu"
4237         ;;
4238         uc3[ab]*)
4239             subarch="avr32_uc"
4240             cpuflags="-mcpu=$cpu"
4241         ;;
4242         uc)
4243             subarch="avr32_uc"
4244             cpuflags="-march=$cpu"
4245         ;;
4246     esac
4247
4248 elif enabled bfin; then
4249
4250     cpuflags="-mcpu=$cpu"
4251
4252 elif enabled mips; then
4253
4254     cpuflags="-march=$cpu"
4255
4256     if [ "$cpu" != "generic" ]; then
4257         disable mips32r2
4258         disable mips32r5
4259         disable mips64r2
4260         disable mips32r6
4261         disable mips64r6
4262         disable loongson2
4263         disable loongson3
4264
4265         case $cpu in
4266             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4267                 enable mips32r2
4268                 disable msa
4269             ;;
4270             p5600|i6400)
4271                 disable mipsdsp
4272                 disable mipsdspr2
4273             ;;
4274             loongson*)
4275                 enable loongson2
4276                 enable loongson3
4277                 enable local_aligned_8 local_aligned_16 local_aligned_32
4278                 enable simd_align_16
4279                 enable fast_64bit
4280                 enable fast_clz
4281                 enable fast_cmov
4282                 enable fast_unaligned
4283                 disable aligned_stack
4284                 case $cpu in
4285                     loongson3*)
4286                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4287                     ;;
4288                     loongson2e)
4289                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4290                     ;;
4291                     loongson2f)
4292                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4293                     ;;
4294                 esac
4295             ;;
4296             *)
4297                 # Unknown CPU. Disable everything.
4298                 warn "unknown CPU. Disabling all MIPS optimizations."
4299                 disable mipsfpu
4300                 disable mipsdsp
4301                 disable mipsdspr2
4302                 disable msa
4303                 disable mmi
4304             ;;
4305         esac
4306
4307         case $cpu in
4308             24kc)
4309                 disable mipsfpu
4310                 disable mipsdsp
4311                 disable mipsdspr2
4312             ;;
4313             24kf*)
4314                 disable mipsdsp
4315                 disable mipsdspr2
4316             ;;
4317             24kec|34kc|1004kc)
4318                 disable mipsfpu
4319                 disable mipsdspr2
4320             ;;
4321             24kef*|34kf*|1004kf*)
4322                 disable mipsdspr2
4323             ;;
4324             74kc)
4325                 disable mipsfpu
4326             ;;
4327             p5600)
4328                 enable mips32r5
4329                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4330             ;;
4331             i6400)
4332                 enable mips64r6
4333                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4334             ;;
4335         esac
4336     else
4337         # We do not disable anything. Is up to the user to disable the unwanted features.
4338         warn 'generic cpu selected'
4339     fi
4340
4341 elif enabled ppc; then
4342
4343     disable ldbrx
4344
4345     case $(tolower $cpu) in
4346         601|ppc601|powerpc601)
4347             cpuflags="-mcpu=601"
4348             disable altivec
4349         ;;
4350         603*|ppc603*|powerpc603*)
4351             cpuflags="-mcpu=603"
4352             disable altivec
4353         ;;
4354         604*|ppc604*|powerpc604*)
4355             cpuflags="-mcpu=604"
4356             disable altivec
4357         ;;
4358         g3|75*|ppc75*|powerpc75*)
4359             cpuflags="-mcpu=750"
4360             disable altivec
4361         ;;
4362         g4|745*|ppc745*|powerpc745*)
4363             cpuflags="-mcpu=7450"
4364             disable vsx
4365         ;;
4366         74*|ppc74*|powerpc74*)
4367             cpuflags="-mcpu=7400"
4368             disable vsx
4369         ;;
4370         g5|970|ppc970|powerpc970)
4371             cpuflags="-mcpu=970"
4372             disable vsx
4373         ;;
4374         power[3-6]*)
4375             cpuflags="-mcpu=$cpu"
4376             disable vsx
4377         ;;
4378         power[7-8]*)
4379             cpuflags="-mcpu=$cpu"
4380         ;;
4381         cell)
4382             cpuflags="-mcpu=cell"
4383             enable ldbrx
4384             disable vsx
4385         ;;
4386         e500mc)
4387             cpuflags="-mcpu=e500mc"
4388             disable altivec
4389         ;;
4390         e500v2)
4391             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4392             disable altivec
4393             disable dcbzl
4394         ;;
4395         e500)
4396             cpuflags="-mcpu=8540 -mhard-float"
4397             disable altivec
4398             disable dcbzl
4399         ;;
4400     esac
4401
4402 elif enabled sparc; then
4403
4404     case $cpu in
4405         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4406             cpuflags="-mcpu=$cpu"
4407         ;;
4408         ultrasparc*|niagara[234])
4409             cpuflags="-mcpu=$cpu"
4410         ;;
4411     esac
4412
4413 elif enabled x86; then
4414
4415     case $cpu in
4416         i[345]86|pentium)
4417             cpuflags="-march=$cpu"
4418             disable i686
4419             disable mmx
4420         ;;
4421         # targets that do NOT support nopl and conditional mov (cmov)
4422         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4423             cpuflags="-march=$cpu"
4424             disable i686
4425         ;;
4426         # targets that do support nopl and conditional mov (cmov)
4427         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4428         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4429             cpuflags="-march=$cpu"
4430             enable i686
4431             enable fast_cmov
4432         ;;
4433         # targets that do support conditional mov but on which it's slow
4434         pentium4|pentium4m|prescott|nocona)
4435             cpuflags="-march=$cpu"
4436             enable i686
4437             disable fast_cmov
4438         ;;
4439     esac
4440
4441 fi
4442
4443 if [ "$cpu" != generic ]; then
4444     add_cflags  $cpuflags
4445     add_asflags $cpuflags
4446     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4447 fi
4448
4449 # compiler sanity check
4450 check_exec <<EOF
4451 int main(void){ return 0; }
4452 EOF
4453 if test "$?" != 0; then
4454     echo "$cc is unable to create an executable file."
4455     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4456         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4457         echo "Only do this if you know what cross compiling means."
4458     fi
4459     die "C compiler test failed."
4460 fi
4461
4462 add_cppflags -D_ISOC99_SOURCE
4463 add_cxxflags -D__STDC_CONSTANT_MACROS
4464 check_cflags -std=c99
4465 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4466 #include <stdlib.h>
4467 EOF
4468 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4469 #include <stdlib.h>
4470 EOF
4471
4472 add_host_cppflags -D_ISOC99_SOURCE
4473 check_host_cflags -std=c99
4474 check_host_cflags -Wall
4475 check_host_cflags -O3
4476
4477 check_64bit(){
4478     arch32=$1
4479     arch64=$2
4480     expr=$3
4481     check_code cc "" "int test[2*($expr) - 1]" &&
4482         subarch=$arch64 || subarch=$arch32
4483 }
4484
4485 case "$arch" in
4486     aarch64|alpha|ia64)
4487         spic=$shared
4488     ;;
4489     mips)
4490         check_64bit mips mips64 '_MIPS_SIM > 1'
4491         spic=$shared
4492     ;;
4493     parisc)
4494         check_64bit parisc parisc64 'sizeof(void *) > 4'
4495         spic=$shared
4496     ;;
4497     ppc)
4498         check_64bit ppc ppc64 'sizeof(void *) > 4'
4499         spic=$shared
4500     ;;
4501     s390)
4502         check_64bit s390 s390x 'sizeof(void *) > 4'
4503         spic=$shared
4504     ;;
4505     sparc)
4506         check_64bit sparc sparc64 'sizeof(void *) > 4'
4507         spic=$shared
4508     ;;
4509     x86)
4510         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4511         # Treat x32 as x64 for now. Note it also needs spic=$shared
4512         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4513             subarch=x86_64
4514         if test "$subarch" = "x86_64"; then
4515             spic=$shared
4516         fi
4517     ;;
4518     ppc)
4519         check_cc <<EOF && subarch="ppc64"
4520         int test[(int)sizeof(char*) - 7];
4521 EOF
4522     ;;
4523 esac
4524
4525 enable $subarch
4526 enabled spic && enable_weak pic
4527
4528 # OS specific
4529 case $target_os in
4530     aix)
4531         SHFLAGS=-shared
4532         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4533         enabled shared && add_ldflags -Wl,-brtl
4534         ;;
4535     android)
4536         disable symver
4537         enable section_data_rel_ro
4538         SLIB_INSTALL_NAME='$(SLIBNAME)'
4539         SLIB_INSTALL_LINKS=
4540         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4541         ;;
4542     haiku)
4543         prefix_default="/boot/common"
4544         network_extralibs="-lnetwork"
4545         host_libs=
4546         ;;
4547     sunos)
4548         SHFLAGS='-shared -Wl,-h,$$(@F)'
4549         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4550         network_extralibs="-lsocket -lnsl"
4551         add_cppflags -D__EXTENSIONS__
4552         # When using suncc to build, the Solaris linker will mark
4553         # an executable with each instruction set encountered by
4554         # the Solaris assembler.  As our libraries contain their own
4555         # guards for processor-specific code, instead suppress
4556         # generation of the HWCAPS ELF section on Solaris x86 only.
4557         enabled_all suncc x86 &&
4558             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4559             add_ldflags -Wl,-M,mapfile
4560         nm_default='nm -P -g'
4561         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4562         ;;
4563     netbsd)
4564         disable symver
4565         oss_indev_extralibs="-lossaudio"
4566         oss_outdev_extralibs="-lossaudio"
4567         enabled gcc || check_ldflags -Wl,-zmuldefs
4568         ;;
4569     openbsd|bitrig)
4570         disable symver
4571         SHFLAGS='-shared'
4572         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4573         SLIB_INSTALL_LINKS=
4574         oss_indev_extralibs="-lossaudio"
4575         oss_outdev_extralibs="-lossaudio"
4576         ;;
4577     dragonfly)
4578         disable symver
4579         ;;
4580     freebsd)
4581         ;;
4582     bsd/os)
4583         add_extralibs -lpoll -lgnugetopt
4584         strip="strip -d"
4585         ;;
4586     darwin)
4587         enabled ppc && add_asflags -force_cpusubtype_ALL
4588         install_name_dir_default='$(SHLIBDIR)'
4589         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4590         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4591         strip="${strip} -x"
4592         add_ldflags -Wl,-dynamic,-search_paths_first
4593         SLIBSUF=".dylib"
4594         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4595         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4596         objformat="macho"
4597         enabled x86_64 && objformat="macho64"
4598         enabled_any pic shared x86_64 ||
4599             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4600         check_header dispatch/dispatch.h
4601         ;;
4602     msys*)
4603         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4604         ;;
4605     mingw32*|mingw64*)
4606         if test $target_os = "mingw32ce"; then
4607             disable network
4608         else
4609             target_os=mingw32
4610         fi
4611         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4612         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4613         LIBTARGET=i386
4614         if enabled x86_64; then
4615             LIBTARGET="i386:x86-64"
4616         elif enabled arm; then
4617             LIBTARGET=arm-wince
4618         fi
4619         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4620         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4621         shlibdir_default="$bindir_default"
4622         SLIBPREF=""
4623         SLIBSUF=".dll"
4624         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4625         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4626         dlltool="${cross_prefix}dlltool"
4627         if check_cmd lib.exe -list; then
4628             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4629             if enabled x86_64; then
4630                 LIBTARGET=x64
4631             fi
4632         elif check_cmd $dlltool --version; then
4633             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4634         fi
4635         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4636         SLIB_INSTALL_LINKS=
4637         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4638         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4639         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4640         objformat="win32"
4641         ranlib=:
4642         enable dos_paths
4643         check_ldflags -Wl,--nxcompat,--dynamicbase
4644         # Lets work around some stupidity in binutils.
4645         # ld will strip relocations from executables even though we need them
4646         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4647         # however ld then forgets what the entry point should be (oops) so we
4648         # have to manually (re)set it.
4649         if enabled x86_32; then
4650             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4651         elif enabled x86_64; then
4652             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4653             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4654             # Set image base >4GB for extra entropy with HEASLR
4655             add_ldexeflags -Wl,--image-base,0x140000000
4656             append SHFLAGS -Wl,--image-base,0x180000000
4657         fi
4658         ;;
4659     win32|win64)
4660         disable symver
4661         if enabled shared; then
4662             # Link to the import library instead of the normal static library
4663             # for shared libs.
4664             LD_LIB='%.lib'
4665             # Cannot build both shared and static libs with MSVC or icl.
4666             disable static
4667         fi
4668         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4669         shlibdir_default="$bindir_default"
4670         SLIBPREF=""
4671         SLIBSUF=".dll"
4672         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4673         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4674         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4675         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4676         SLIB_INSTALL_LINKS=
4677         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4678         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4679         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4680         objformat="win32"
4681         ranlib=:
4682         enable dos_paths
4683         ;;
4684     cygwin*)
4685         target_os=cygwin
4686         shlibdir_default="$bindir_default"
4687         SLIBPREF="cyg"
4688         SLIBSUF=".dll"
4689         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4690         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4691         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4692         SLIB_INSTALL_LINKS=
4693         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4694         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4695         objformat="win32"
4696         enable dos_paths
4697         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4698         ;;
4699     *-dos|freedos|opendos)
4700         network_extralibs="-lsocket"
4701         objformat="coff"
4702         enable dos_paths
4703         add_cppflags -U__STRICT_ANSI__
4704         ;;
4705     linux)
4706         enable dv1394
4707         enable section_data_rel_ro
4708         ;;
4709     irix*)
4710         target_os=irix
4711         ranlib="echo ignoring ranlib"
4712         ;;
4713     os/2*)
4714         strip="lxlite -CS"
4715         ln_s="cp -f"
4716         objformat="aout"
4717         add_cppflags -D_GNU_SOURCE
4718         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4719         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4720         LIBSUF="_s.a"
4721         SLIBPREF=""
4722         SLIBSUF=".dll"
4723         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4724         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4725         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4726             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4727             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4728             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4729             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4730         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4731             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4732         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4733         enable dos_paths
4734         enable_weak os2threads
4735         ;;
4736     gnu/kfreebsd)
4737         add_cppflags -D_BSD_SOURCE
4738         ;;
4739     gnu)
4740         ;;
4741     qnx)
4742         add_cppflags -D_QNX_SOURCE
4743         network_extralibs="-lsocket"
4744         ;;
4745     symbian)
4746         SLIBSUF=".dll"
4747         enable dos_paths
4748         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4749         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4750         add_ldflags -Wl,--target1-abs,--no-undefined \
4751                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4752                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4753         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4754                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4755                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4756         ;;
4757     osf1)
4758         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4759         ;;
4760     minix)
4761         ;;
4762     plan9)
4763         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4764                      -D_REENTRANT_SOURCE        \
4765                      -D_RESEARCH_SOURCE         \
4766                      -DFD_SETSIZE=96            \
4767                      -DHAVE_SOCK_OPTS
4768         add_compat strtod.o strtod=avpriv_strtod
4769         network_extralibs='-lbsd'
4770         exeobjs=compat/plan9/main.o
4771         disable ffserver
4772         cp_f='cp'
4773         ;;
4774     none)
4775         ;;
4776     *)
4777         die "Unknown OS '$target_os'."
4778         ;;
4779 esac
4780
4781 # test if creating links works
4782 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4783 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4784 mkdir "$link_dest"
4785 $ln_s "$link_dest" "$link_name"
4786 touch "$link_dest/test_file"
4787 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4788     # create link to source path
4789     [ -e src ] && rm src
4790     $ln_s "$source_path" src
4791     source_link=src
4792 else
4793     # creating directory links doesn't work
4794     # fall back to using the full source path
4795     source_link="$source_path"
4796 fi
4797 # cleanup
4798 rm -r "$link_dest"
4799 rm -r "$link_name"
4800
4801 # determine libc flavour
4802
4803 probe_libc(){
4804     pfx=$1
4805     pfx_no_=${pfx%_}
4806     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4807     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4808         eval ${pfx}libc_type=uclibc
4809         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4810     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4811         eval ${pfx}libc_type=glibc
4812         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4813     # MinGW headers can be installed on Cygwin, so check for newlib first.
4814     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4815         eval ${pfx}libc_type=newlib
4816         add_${pfx}cppflags -U__STRICT_ANSI__
4817     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4818     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4819         eval ${pfx}libc_type=mingw64
4820         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4821             add_compat msvcrt/snprintf.o
4822             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4823         fi
4824         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4825         eval test \$${pfx_no_}cc_type = "gcc" &&
4826             add_${pfx}cppflags -D__printf__=__gnu_printf__
4827     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4828          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4829         eval ${pfx}libc_type=mingw32
4830         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4831             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4832             die "ERROR: MinGW32 runtime version must be >= 3.15."
4833         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4834         eval test \$${pfx_no_}cc_type = "gcc" &&
4835             add_${pfx}cppflags -D__printf__=__gnu_printf__
4836     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4837         eval ${pfx}libc_type=msvcrt
4838         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4839             if [ "$pfx" = host_ ]; then
4840                 add_host_cppflags -Dsnprintf=_snprintf
4841             else
4842                 add_compat strtod.o strtod=avpriv_strtod
4843                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4844                                              _snprintf=avpriv_snprintf  \
4845                                              vsnprintf=avpriv_vsnprintf
4846             fi
4847         fi
4848         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4849         # 0x601 by default unless something else is set by the user.
4850         # This can easily lead to us detecting functions only present
4851         # in such new versions and producing binaries requiring windows 7.0.
4852         # Therefore explicitly set the default to XP unless the user has
4853         # set something else on the command line.
4854         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4855         # family. For these cases, configure is free to use any functions
4856         # found in the SDK headers by default. (Alternatively, we could force
4857         # _WIN32_WINNT to 0x0602 in that case.)
4858         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4859             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4860 #ifdef WINAPI_FAMILY
4861 #include <winapifamily.h>
4862 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4863 #error not desktop
4864 #endif
4865 #endif
4866 EOF
4867     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4868         eval ${pfx}libc_type=klibc
4869     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4870         eval ${pfx}libc_type=bionic
4871     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4872         eval ${pfx}libc_type=solaris
4873         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4874     fi
4875     check_${pfx}cc <<EOF
4876 #include <time.h>
4877 void *v = localtime_r;
4878 EOF
4879 test "$?" != 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
4880 #include <time.h>
4881 void *v = localtime_r;
4882 EOF
4883
4884 }
4885
4886 probe_libc
4887 test -n "$libc_type" && enable libc_$libc_type
4888 probe_libc host_
4889 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4890
4891 case $libc_type in
4892     bionic)
4893         add_compat strtod.o strtod=avpriv_strtod
4894         ;;
4895 esac
4896
4897 # hacks for compiler/libc/os combinations
4898
4899 if enabled_all tms470 libc_glibc; then
4900     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4901     add_cppflags -D__USER_LABEL_PREFIX__=
4902     add_cppflags -D__builtin_memset=memset
4903     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4904     add_cflags   -pds=48    # incompatible redefinition of macro
4905 fi
4906
4907 if enabled_all ccc libc_glibc; then
4908     add_ldflags -Wl,-z,now  # calls to libots crash without this
4909 fi
4910
4911 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4912     add_cppflags '-I\$(SRC_PATH)/compat/float'
4913
4914 esc(){
4915     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4916 }
4917
4918 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4919
4920 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4921
4922 set_default libdir
4923 : ${shlibdir_default:="$libdir"}
4924 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4925
4926 set_default $PATHS_LIST
4927 set_default nm
4928
4929 # we need to build at least one lib type
4930 if ! enabled_any static shared; then
4931     cat <<EOF
4932 At least one library type must be built.
4933 Specify --enable-static to build the static libraries or --enable-shared to
4934 build the shared libraries as well. To only build the shared libraries specify
4935 --disable-static in addition to --enable-shared.
4936 EOF
4937     exit 1;
4938 fi
4939
4940 die_license_disabled() {
4941     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4942 }
4943
4944 die_license_disabled_gpl() {
4945     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4946 }
4947
4948 die_license_disabled gpl frei0r
4949 die_license_disabled gpl libcdio
4950 die_license_disabled gpl librubberband
4951 die_license_disabled gpl libsmbclient
4952 die_license_disabled gpl libutvideo
4953 die_license_disabled gpl libvidstab
4954 die_license_disabled gpl libx264
4955 die_license_disabled gpl libx265
4956 die_license_disabled gpl libxavs
4957 die_license_disabled gpl libxvid
4958 die_license_disabled gpl x11grab
4959
4960 die_license_disabled nonfree cuda
4961 die_license_disabled nonfree libfaac
4962 die_license_disabled nonfree nvenc
4963 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4964 enabled gpl && die_license_disabled_gpl nonfree openssl
4965
4966 die_license_disabled version3 gmp
4967 die_license_disabled version3 libopencore_amrnb
4968 die_license_disabled version3 libopencore_amrwb
4969 die_license_disabled version3 libsmbclient
4970 die_license_disabled version3 libvo_amrwbenc
4971
4972 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4973
4974 disabled optimizations || check_cflags -fomit-frame-pointer
4975
4976 enable_weak_pic() {
4977     disabled pic && return
4978     enable pic
4979     add_cppflags -DPIC
4980     case "$target_os" in
4981     mingw*|cygwin*)
4982         ;;
4983     *)
4984         add_cflags -fPIC
4985         ;;
4986     esac
4987     add_asflags  -fPIC
4988 }
4989
4990 enabled pic && enable_weak_pic
4991
4992 check_cc <<EOF || die "Symbol mangling check failed."
4993 int ff_extern;
4994 EOF
4995 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4996 extern_prefix=${sym%%ff_extern*}
4997
4998 check_cc <<EOF && enable_weak inline_asm
4999 void foo(void) { __asm__ volatile ("" ::); }
5000 EOF
5001
5002 _restrict=
5003 for restrict_keyword in restrict __restrict__ __restrict; do
5004     check_cc <<EOF && _restrict=$restrict_keyword && break
5005 void foo(char * $restrict_keyword p);
5006 EOF
5007 done
5008
5009 check_cc <<EOF && enable pragma_deprecated
5010 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5011 EOF
5012
5013 check_cc <<EOF && enable attribute_packed
5014 struct { int x; } __attribute__((packed)) x;
5015 EOF
5016
5017 check_cc <<EOF && enable attribute_may_alias
5018 union { int x; } __attribute__((may_alias)) x;
5019 EOF
5020
5021 check_cc <<EOF || die "endian test failed"
5022 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5023 EOF
5024 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5025
5026 if ! enabled ppc64 || enabled bigendian; then
5027     disable vsx
5028 fi
5029
5030 check_gas() {
5031     log "check_gas using '$as' as AS"
5032     # :vararg is used on aarch64, arm and ppc altivec
5033     check_as <<EOF || return 1
5034 .macro m n, y:vararg=0
5035 \n: .int \y
5036 .endm
5037 m x
5038 EOF
5039     # .altmacro is only used in arm asm
5040     ! enabled arm || check_as <<EOF || return 1
5041 .altmacro
5042 EOF
5043     enable gnu_as
5044     return 0
5045 }
5046
5047 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5048     nogas=:
5049     enabled_any arm aarch64 && nogas=die
5050     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5051     as_noop=-v
5052
5053     case $as_type in
5054         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5055         gcc)  gaspp_as_type=gas ;;
5056         *)    gaspp_as_type=$as_type ;;
5057     esac
5058
5059     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5060
5061     test "${as#*gas-preprocessor.pl}" != "$as" ||
5062     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5063         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5064
5065     if ! check_gas ; then
5066         as=${gas:=$as}
5067         check_gas || \
5068             $nogas "GNU assembler not found, install/update gas-preprocessor"
5069     fi
5070
5071     check_as <<EOF && enable as_func
5072 .func test
5073 .endfunc
5074 EOF
5075 fi
5076
5077 check_inline_asm inline_asm_labels '"1:\n"'
5078
5079 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5080
5081 if enabled aarch64; then
5082     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5083     # internal assembler in clang 3.3 does not support this instruction
5084     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5085     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5086
5087     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5088
5089 elif enabled alpha; then
5090
5091     check_cflags -mieee
5092
5093 elif enabled arm; then
5094
5095     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5096
5097     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5098 float func(float a, float b){ return a+b; }
5099 EOF
5100
5101     enabled thumb && check_cflags -mthumb || check_cflags -marm
5102
5103     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5104         enable vfp_args
5105     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5106         enable vfp_args
5107     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5108         case "${cross_prefix:-$cc}" in
5109             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5110             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5111 __asm__ (".eabi_attribute 28, 1");
5112 int main(void) { return 0; }
5113 EOF
5114         esac
5115         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5116     fi
5117
5118     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5119     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5120     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5121     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5122     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5123     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5124     enabled setend  && check_insn setend  'setend be'
5125
5126     [ $target_os = linux ] || [ $target_os = android ] ||
5127         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5128             $ARCH_EXT_LIST_ARM
5129
5130     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5131
5132     check_as <<EOF && enable as_dn_directive
5133 ra .dn d0.i16
5134 .unreq ra
5135 EOF
5136
5137     # llvm's integrated assembler supports .object_arch from llvm 3.5
5138     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5139 .object_arch armv4
5140 EOF
5141
5142     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5143
5144 elif enabled mips; then
5145
5146     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5147     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5148     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5149
5150     # Enable minimum ISA based on selected options
5151     if enabled mips64; then
5152         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5153         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5154         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5155     else
5156         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5157         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5158         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5159         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5160     fi
5161
5162     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5163     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5164     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5165     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5166     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5167
5168 elif enabled parisc; then
5169
5170     if enabled gcc; then
5171         case $($cc -dumpversion) in
5172             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5173         esac
5174     fi
5175
5176 elif enabled ppc; then
5177
5178     enable local_aligned_8 local_aligned_16 local_aligned_32
5179
5180     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5181     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5182     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5183     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5184
5185     # AltiVec flags: The FSF version of GCC differs from the Apple version
5186     if enabled altivec; then
5187         check_cflags -maltivec -mabi=altivec &&
5188         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5189         check_cflags -faltivec
5190
5191         # check if our compiler supports Motorola AltiVec C API
5192         check_cc <<EOF || disable altivec
5193 $inc_altivec_h
5194 int main(void) {
5195     vector signed int v1 = (vector signed int) { 0 };
5196     vector signed int v2 = (vector signed int) { 1 };
5197     v1 = vec_add(v1, v2);
5198     return 0;
5199 }
5200 EOF
5201
5202         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5203     fi
5204
5205     if enabled vsx; then
5206         check_cflags -mvsx &&
5207         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5208     fi
5209
5210     if enabled power8; then
5211         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5212     fi
5213
5214 elif enabled x86; then
5215
5216     check_builtin rdtsc    intrin.h   "__rdtsc()"
5217     check_builtin mm_empty mmintrin.h "_mm_empty()"
5218
5219     enable local_aligned_8 local_aligned_16 local_aligned_32
5220
5221     # check whether EBP is available on x86
5222     # As 'i' is stored on the stack, this program will crash
5223     # if the base pointer is used to access it because the
5224     # base pointer is cleared in the inline assembly code.
5225     check_exec_crash <<EOF && enable ebp_available
5226 volatile int i=0;
5227 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5228 return i;
5229 EOF
5230
5231     # check whether EBX is available on x86
5232     check_inline_asm ebx_available '""::"b"(0)' &&
5233         check_inline_asm ebx_available '"":::"%ebx"'
5234
5235     # check whether xmm clobbers are supported
5236     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5237
5238     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5239         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5240
5241     # check whether binutils is new enough to compile SSSE3/MMXEXT
5242     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5243     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5244
5245     if ! disabled_any asm mmx yasm; then
5246         if check_cmd $yasmexe --version; then
5247             enabled x86_64 && yasm_extra="-m amd64"
5248             yasm_debug="-g dwarf2"
5249         elif check_cmd nasm -v; then
5250             yasmexe=nasm
5251             yasm_debug="-g -F dwarf"
5252             if enabled x86_64; then
5253                 case "$objformat" in
5254                     elf)   objformat=elf64 ;;
5255                     win32) objformat=win64 ;;
5256                 esac
5257             fi
5258         fi
5259
5260         YASMFLAGS="-f $objformat $yasm_extra"
5261         enabled pic               && append YASMFLAGS "-DPIC"
5262         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5263         case "$objformat" in
5264             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5265         esac
5266
5267         check_yasm "movbe ecx, [5]" && enable yasm ||
5268             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5269         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5270         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5271         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5272         check_yasm "CPU amdnop" || disable cpunop
5273     fi
5274
5275     case "$cpu" in
5276         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5277             disable fast_clz
5278         ;;
5279     esac
5280
5281 fi
5282
5283 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5284
5285 check_ldflags -Wl,--as-needed
5286 check_ldflags -Wl,-z,noexecstack
5287
5288 if check_func dlopen; then
5289     ldl=
5290 elif check_func dlopen -ldl; then
5291     ldl=-ldl
5292 fi
5293
5294 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5295 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5296 frei0r_filter_extralibs='$ldl'
5297 frei0r_src_filter_extralibs='$ldl'
5298 ladspa_filter_extralibs='$ldl'
5299 nvenc_encoder_extralibs='$ldl'
5300 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5301 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5302
5303 if ! disabled network; then
5304     check_func getaddrinfo $network_extralibs
5305     check_func inet_aton $network_extralibs
5306
5307     check_type netdb.h "struct addrinfo"
5308     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5309     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5310     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5311     check_type poll.h "struct pollfd"
5312     check_type netinet/sctp.h "struct sctp_event_subscribe"
5313     check_struct "sys/socket.h" "struct msghdr" msg_flags
5314     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5315     check_type netinet/in.h "struct sockaddr_in6"
5316     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5317     check_type "sys/types.h sys/socket.h" socklen_t
5318
5319     # Prefer arpa/inet.h over winsock2
5320     if check_header arpa/inet.h ; then
5321         check_func closesocket
5322     elif check_header winsock2.h ; then
5323         check_func_headers winsock2.h closesocket -lws2 &&
5324             network_extralibs="-lws2" ||
5325         { check_func_headers winsock2.h closesocket -lws2_32 &&
5326             network_extralibs="-lws2_32"; } || disable winsock2_h network
5327         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5328
5329         check_type ws2tcpip.h socklen_t
5330         check_type ws2tcpip.h "struct addrinfo"
5331         check_type ws2tcpip.h "struct group_source_req"
5332         check_type ws2tcpip.h "struct ip_mreq_source"
5333         check_type ws2tcpip.h "struct ipv6_mreq"
5334         check_type winsock2.h "struct pollfd"
5335         check_struct winsock2.h "struct sockaddr" sa_len
5336         check_type ws2tcpip.h "struct sockaddr_in6"
5337         check_type ws2tcpip.h "struct sockaddr_storage"
5338     else
5339         disable network
5340     fi
5341 fi
5342
5343 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5344 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5345 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5346 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5347 check_builtin sarestart signal.h "SA_RESTART"
5348 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5349 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5350 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5351 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5352
5353 case "$custom_allocator" in
5354     jemalloc)
5355         # jemalloc by default does not use a prefix
5356         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5357     ;;
5358     tcmalloc)
5359         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5360         malloc_prefix=tc_
5361     ;;
5362 esac
5363
5364 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5365 check_func  ${malloc_prefix}memalign            && enable memalign
5366 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5367
5368 check_func  access
5369 check_func  arc4random
5370 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5371 check_func  fcntl
5372 check_func  fork
5373 check_func  gethrtime
5374 check_func  getopt
5375 check_func  getrusage
5376 check_func  gettimeofday
5377 check_func  isatty
5378 check_func  mach_absolute_time
5379 check_func  mkstemp
5380 check_func  mmap
5381 check_func  mprotect
5382 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5383 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5384 check_func  sched_getaffinity
5385 check_func  setrlimit
5386 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5387 check_func  strerror_r
5388 check_func  sysconf
5389 check_func  sysctl
5390 check_func  usleep
5391
5392 check_func_headers conio.h kbhit
5393 check_func_headers io.h setmode
5394 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5395 check_func_headers stdlib.h getenv
5396 check_func_headers sys/stat.h lstat
5397
5398 check_func_headers windows.h CoTaskMemFree -lole32
5399 check_func_headers windows.h GetProcessAffinityMask
5400 check_func_headers windows.h GetProcessTimes
5401 check_func_headers windows.h GetSystemTimeAsFileTime
5402 check_func_headers windows.h MapViewOfFile
5403 check_func_headers windows.h PeekNamedPipe
5404 check_func_headers windows.h SetConsoleTextAttribute
5405 check_func_headers windows.h SetConsoleCtrlHandler
5406 check_func_headers windows.h Sleep
5407 check_func_headers windows.h VirtualAlloc
5408 check_struct windows.h "CONDITION_VARIABLE" Ptr
5409 check_func_headers glob.h glob
5410 enabled xlib &&
5411     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5412
5413 check_header AudioToolbox/AudioToolbox.h
5414 check_header direct.h
5415 check_header dirent.h
5416 check_header dlfcn.h
5417 check_header d3d11.h
5418 check_header dxva.h
5419 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5420 check_header io.h
5421 check_header libcrystalhd/libcrystalhd_if.h
5422 check_header mach/mach_time.h
5423 check_header malloc.h
5424 check_header net/udplite.h
5425 check_header poll.h
5426 check_header sys/mman.h
5427 check_header sys/param.h
5428 check_header sys/resource.h
5429 check_header sys/select.h
5430 check_header sys/time.h
5431 check_header sys/un.h
5432 check_header termios.h
5433 check_header unistd.h
5434 check_header valgrind/valgrind.h
5435 check_header vdpau/vdpau.h
5436 check_header vdpau/vdpau_x11.h
5437 check_header VideoDecodeAcceleration/VDADecoder.h
5438 check_header VideoToolbox/VideoToolbox.h
5439 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5440 check_header windows.h
5441 check_header X11/extensions/XvMClib.h
5442 check_header asm/types.h
5443
5444 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5445 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5446 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5447 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5448
5449 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5450
5451 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5452 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5453 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5454 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5455 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5456
5457 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5458 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5459 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5460
5461 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5462
5463 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5464
5465 if ! disabled w32threads && ! enabled pthreads; then
5466     check_func_headers "windows.h process.h" _beginthreadex &&
5467         enable w32threads || disable w32threads
5468     if ! enabled w32threads && enabled winrt; then
5469         check_func_headers "windows.h" CreateThread &&
5470             enable w32threads || disable w32threads
5471     fi
5472 fi
5473
5474 # check for some common methods of building with pthread support
5475 # do this before the optional library checks as some of them require pthreads
5476 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5477     enable pthreads
5478     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5479         add_cflags -pthread
5480         add_extralibs -pthread
5481     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5482         add_cflags -pthreads
5483         add_extralibs -pthreads
5484     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5485         add_cflags -ldl -pthread
5486         add_extralibs -ldl -pthread
5487     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5488         add_extralibs -lpthreadGC2
5489     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5490         :
5491     elif ! check_func pthread_join && ! check_func pthread_create; then
5492         disable pthreads
5493     fi
5494     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5495 fi
5496
5497
5498 if enabled pthreads; then
5499   check_func pthread_cancel
5500 fi
5501
5502 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5503 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5504 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5505
5506 check_lib math.h sin -lm && LIBM="-lm"
5507 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5508
5509 atan2f_args=2
5510 copysign_args=2
5511 hypot_args=2
5512 ldexpf_args=2
5513 powf_args=2
5514
5515 for func in $MATH_FUNCS; do
5516     eval check_mathfunc $func \${${func}_args:-1}
5517 done
5518
5519 for func in $COMPLEX_FUNCS; do
5520     eval check_complexfunc $func \${${func}_args:-1}
5521 done
5522
5523 # these are off by default, so fail if requested and not available
5524 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5525 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5526                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5527 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5528                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5529                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5530 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5531                                die "ERROR: CUDA not found"; }
5532 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5533 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5534 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5535 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5536 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5537 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5538 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5539 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5540                                check_lib2 "dlfcn.h" dlopen -ldl; }
5541 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5542 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5543 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5544 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5545 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5546 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5547                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5548                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5549 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5550 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5551 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5552                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5553                                  warn "using libfdk without pkg-config"; } }
5554 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"
5555 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5556 enabled fontconfig        && enable libfontconfig
5557 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5558 enabled libfreetype       && require_libfreetype
5559 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5560 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5561 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5562                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5563                                done || die "ERROR: libgsm not found"; }
5564 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5565 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5566 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5567 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5568 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5569 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5570 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5571 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5572 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5573                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5574                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5575                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5576 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5577 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5578                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5579                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5580                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5581                                die "ERROR: libopenjpeg not found"; }
5582 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5583 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5584 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5585 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5586 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5587 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5588 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5589                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5590 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5591 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5592 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5593 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5594 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5595 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5596 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5597                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5598                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5599 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5600 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5601 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5602 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5603 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5604
5605 enabled libvpx            && {
5606     enabled libvpx_vp8_decoder && {
5607         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5608             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5609                 die "ERROR: libvpx decoder version must be >=0.9.1";
5610     }
5611     enabled libvpx_vp8_encoder && {
5612         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5613             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5614                 die "ERROR: libvpx encoder version must be >=0.9.7";
5615     }
5616     enabled libvpx_vp9_decoder && {
5617         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5618             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5619                 disable libvpx_vp9_decoder;
5620     }
5621     enabled libvpx_vp9_encoder && {
5622         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5623             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5624                 disable libvpx_vp9_encoder;
5625     }
5626     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5627         die "libvpx enabled but no supported decoders found"
5628     fi
5629 }
5630
5631 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5632 enabled libwebp           && {
5633     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5634     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5635 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5636                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5637                                  warn "using libx264 without pkg-config"; } } &&
5638                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5639                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5640                              { check_cpp_condition x264.h "X264_MPEG2" &&
5641                                enable libx262; }
5642 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5643                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5644                                die "ERROR: libx265 version must be >= 68."; }
5645 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5646 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5647 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5648 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5649 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5650                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5651                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5652 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5653 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5654                                 { ! enabled cross_compile && {
5655                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5656                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5657                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5658                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5659                                die "ERROR: mmal not found"; }
5660 enabled mmal &&
5661     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5662      die "ERROR: mmal firmware headers too old")
5663
5664 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5665 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5666                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5667                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5668                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5669 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5670                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5671                                die "ERROR: openal not found"; } &&
5672                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5673                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5674 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5675                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5676                                die "ERROR: opencl not found"; } &&
5677                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5678                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5679                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5680 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5681                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5682                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5683                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5684                                die "ERROR: opengl not found."
5685                              }
5686 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5687                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5688                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5689                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5690                                die "ERROR: openssl not found"; }
5691 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5692
5693 # libdc1394 check
5694 if enabled libdc1394; then
5695     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5696         enable libdc1394_2; } ||
5697     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5698         enable libdc1394_1; } ||
5699     die "ERROR: No version of libdc1394 found "
5700 fi
5701
5702 if enabled gcrypt; then
5703     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5704     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5705         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5706         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5707         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5708             die "ERROR: gcrypt not found"
5709         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5710     else
5711         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5712     fi
5713 fi
5714
5715 if ! disabled sdl; then
5716     SDL_CONFIG="${cross_prefix}sdl-config"
5717     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5718         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5719         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5720         enable sdl
5721     else
5722         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5723             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5724             sdl_libs=$("${SDL_CONFIG}" --libs)
5725             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5726             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5727             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5728             enable sdl
5729         elif enabled sdl ; then
5730             die "ERROR: SDL not found"
5731         else
5732             disable sdl
5733         fi
5734     fi
5735     if test $target_os = "mingw32"; then
5736         sdl_libs="$sdl_libs -mconsole"
5737     fi
5738 fi
5739 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5740
5741 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5742     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5743     enable securetransport; }
5744
5745 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5746                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5747
5748 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5749 enabled makeinfo \
5750     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5751     && enable makeinfo_html || disable makeinfo_html
5752 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5753 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5754 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5755 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5756
5757 check_header linux/fb.h
5758 check_header linux/videodev.h
5759 check_header linux/videodev2.h
5760 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5761
5762 check_header sys/videoio.h
5763 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5764
5765 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5766 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5767 # w32api 3.12 had it defined wrong
5768 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5769
5770 check_type "dshow.h" IBaseFilter
5771
5772 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5773 { check_header dev/bktr/ioctl_meteor.h &&
5774   check_header dev/bktr/ioctl_bt848.h; } ||
5775 { check_header machine/ioctl_meteor.h &&
5776   check_header machine/ioctl_bt848.h; } ||
5777 { check_header dev/video/meteor/ioctl_meteor.h &&
5778   check_header dev/video/bktr/ioctl_bt848.h; } ||
5779 check_header dev/ic/bt8xx.h
5780
5781 check_header sndio.h
5782 if check_struct sys/soundcard.h audio_buf_info bytes; then
5783     enable_safe sys/soundcard.h
5784 else
5785     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5786     #include <sys/soundcard.h>
5787     audio_buf_info abc;
5788 EOF
5789 fi
5790 check_header soundcard.h
5791
5792 enabled_any alsa_indev alsa_outdev &&
5793     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5794
5795 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5796     check_func jack_port_get_latency_range -ljack
5797
5798 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5799
5800 if enabled libcdio; then
5801     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5802     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5803     die "ERROR: No usable libcdio/cdparanoia found"
5804 fi
5805
5806 enabled xlib &&
5807     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5808
5809 if ! disabled libxcb; then
5810     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5811         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5812     } && disable x11grab && enable libxcb
5813
5814 if enabled libxcb; then
5815     disabled libxcb_shm || {
5816         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5817             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5818         } && check_header sys/shm.h && enable libxcb_shm; }
5819
5820     disabled libxcb_xfixes || {
5821         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5822             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5823         } && enable libxcb_xfixes; }
5824
5825     disabled libxcb_shape || {
5826         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5827             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5828         } && enable libxcb_shape; }
5829
5830     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5831     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5832 fi
5833 fi
5834
5835 if enabled x11grab; then
5836     enabled xlib || die "ERROR: Xlib not found"
5837     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5838     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5839 fi
5840
5841 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5842
5843 enabled dxva2api_h &&
5844     check_cc <<EOF && enable dxva2api_cobj
5845 #define _WIN32_WINNT 0x0600
5846 #define COBJMACROS
5847 #include <windows.h>
5848 #include <d3d9.h>
5849 #include <dxva2api.h>
5850 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5851 EOF
5852
5853 enabled vaapi &&
5854     check_lib va/va.h vaInitialize -lva ||
5855     disable vaapi
5856
5857 enabled vaapi &&
5858     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5859     disable vaapi
5860
5861 enabled vaapi && enabled xlib &&
5862     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5863     enable vaapi_x11
5864
5865 enabled vdpau &&
5866     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5867     disable vdpau
5868
5869 enabled vdpau && enabled xlib &&
5870     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5871     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5872     enable vdpau_x11
5873
5874 # Funny iconv installations are not unusual, so check it after all flags have been set
5875 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5876
5877 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5878
5879 # add some useful compiler flags if supported
5880 check_cflags -Wdeclaration-after-statement
5881 check_cflags -Wall
5882 check_cflags -Wdisabled-optimization
5883 check_cflags -Wpointer-arith
5884 check_cflags -Wredundant-decls
5885 check_cflags -Wwrite-strings
5886 check_cflags -Wtype-limits
5887 check_cflags -Wundef
5888 check_cflags -Wmissing-prototypes
5889 check_cflags -Wno-pointer-to-int-cast
5890 check_cflags -Wstrict-prototypes
5891 check_cflags -Wempty-body
5892 enabled extra_warnings && check_cflags -Winline
5893 enabled extra_warnings && check_cflags -Wcast-qual
5894
5895 check_disable_warning(){
5896     warning_flag=-W${1#-Wno-}
5897     test_cflags $warning_flag && add_cflags $1
5898 }
5899
5900 check_disable_warning -Wno-parentheses
5901 check_disable_warning -Wno-switch
5902 check_disable_warning -Wno-format-zero-length
5903 check_disable_warning -Wno-pointer-sign
5904 check_disable_warning -Wno-unused-const-variable
5905
5906 # add some linker flags
5907 check_ldflags -Wl,--warn-common
5908 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5909 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5910 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5911 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5912
5913 # add some strip flags
5914 # -wN '..@*' is more selective than -x, but not available everywhere.
5915 check_stripflags -wN \'..@*\' || check_stripflags -x
5916
5917 enabled neon_clobber_test &&
5918     check_ldflags -Wl,--wrap,avcodec_open2              \
5919                   -Wl,--wrap,avcodec_decode_audio4      \
5920                   -Wl,--wrap,avcodec_decode_video2      \
5921                   -Wl,--wrap,avcodec_decode_subtitle2   \
5922                   -Wl,--wrap,avcodec_encode_audio2      \
5923                   -Wl,--wrap,avcodec_encode_video2      \
5924                   -Wl,--wrap,avcodec_encode_subtitle    \
5925                   -Wl,--wrap,swr_convert                \
5926                   -Wl,--wrap,avresample_convert ||
5927     disable neon_clobber_test
5928
5929 enabled xmm_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                   -Wl,--wrap,sws_scale ||
5940     disable xmm_clobber_test
5941
5942 echo "X { local: *; };" > $TMPV
5943 if test_ldflags -Wl,--version-script,$TMPV; then
5944     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5945 elif test_ldflags -Wl,-M,$TMPV; then
5946     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5947 fi
5948
5949 check_cc <<EOF && enable symver_asm_label
5950 void ff_foo(void) __asm__ ("av_foo@VERSION");
5951 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5952 EOF
5953     check_cc <<EOF && enable symver_gnu_asm
5954 __asm__(".symver ff_foo,av_foo@VERSION");
5955 void ff_foo(void) {}
5956 EOF
5957
5958 if [ -z "$optflags" ]; then
5959     if enabled small; then
5960         optflags=$cflags_size
5961     elif enabled optimizations; then
5962         optflags=$cflags_speed
5963     else
5964         optflags=$cflags_noopt
5965     fi
5966 fi
5967
5968 check_optflags(){
5969     check_cflags "$@"
5970     enabled lto && check_ldflags "$@"
5971 }
5972
5973
5974 if enabled lto; then
5975     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5976     check_cflags  -flto
5977     check_ldflags -flto $cpuflags
5978     disable inline_asm_direct_symbol_refs
5979 fi
5980
5981 check_optflags $optflags
5982 check_optflags -fno-math-errno
5983 check_optflags -fno-signed-zeros
5984
5985 enabled ftrapv && check_cflags -ftrapv
5986
5987 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5988 int x;
5989 EOF
5990
5991
5992 if enabled icc; then
5993     # Just warnings, no remarks
5994     check_cflags -w1
5995     # -wd: Disable following warnings
5996     # 144, 167, 556: -Wno-pointer-sign
5997     # 188: enumerated type mixed with another type
5998     # 1292: attribute "foo" ignored
5999     # 1419: external declaration in primary source file
6000     # 10006: ignoring unknown option -fno-signed-zeros
6001     # 10148: ignoring unknown option -Wno-parentheses
6002     # 10156: ignoring option '-W'; no argument required
6003     # 13200: No EMMS instruction before call to function
6004     # 13203: No EMMS instruction before return from function
6005     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6006     # 11030: Warning unknown option --as-needed
6007     # 10156: ignoring option '-export'; no argument required
6008     check_ldflags -wd10156,11030
6009     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6010     enable ebp_available
6011     # The test above does not test linking
6012     enabled lto && disable symver_asm_label
6013     if enabled x86_32; then
6014         icc_version=$($cc -dumpversion)
6015         test ${icc_version%%.*} -ge 11 &&
6016             check_cflags -falign-stack=maintain-16-byte ||
6017             disable aligned_stack
6018     fi
6019 elif enabled ccc; then
6020     # disable some annoying warnings
6021     add_cflags -msg_disable bitnotint
6022     add_cflags -msg_disable mixfuncvoid
6023     add_cflags -msg_disable nonstandcast
6024     add_cflags -msg_disable unsupieee
6025 elif enabled gcc; then
6026     case $gcc_basever in
6027         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
6028         4.*)                 check_optflags -fno-tree-vectorize ;;
6029         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
6030     esac
6031     check_cflags -Werror=format-security
6032     check_cflags -Werror=implicit-function-declaration
6033     check_cflags -Werror=missing-prototypes
6034     check_cflags -Werror=return-type
6035     check_cflags -Werror=vla
6036     check_cflags -Wformat
6037     check_cflags -fdiagnostics-color=auto
6038     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6039 elif enabled llvm_gcc; then
6040     check_cflags -mllvm -stack-alignment=16
6041 elif enabled clang; then
6042     check_cflags -mllvm -stack-alignment=16
6043     check_cflags -Qunused-arguments
6044     check_cflags -Werror=implicit-function-declaration
6045     check_cflags -Werror=missing-prototypes
6046     check_cflags -Werror=return-type
6047 elif enabled cparser; then
6048     add_cflags -Wno-missing-variable-declarations
6049     add_cflags -Wno-empty-statement
6050 elif enabled armcc; then
6051     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6052     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6053     # 2523: use of inline assembly is deprecated
6054     add_cflags -W${armcc_opt},--diag_suppress=2523
6055     add_cflags -W${armcc_opt},--diag_suppress=1207
6056     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6057     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6058     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6059     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6060 elif enabled tms470; then
6061     add_cflags -pds=824 -pds=837
6062     disable inline_asm
6063 elif enabled pathscale; then
6064     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6065 elif enabled_any msvc icl; then
6066     enabled x86_32 && disable aligned_stack
6067     enabled_all x86_32 debug && add_cflags -Oy-
6068     enabled debug && add_ldflags -debug
6069     enable pragma_deprecated
6070     if enabled icl; then
6071         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6072         # (correctly) on icl 13.x.
6073         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6074             add_cflags -Qansi-alias
6075         # Some inline asm is not compilable in debug
6076         if enabled debug; then
6077             disable ebp_available
6078             disable ebx_available
6079         fi
6080     fi
6081     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6082     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6083     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6084     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6085     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6086     # MSVC 2013 and newer can handle it fine.
6087     # If this declspec fails, force including stdlib.h before the restrict redefinition
6088     # happens in config.h.
6089     if [ $_restrict != restrict ]; then
6090         check_cc <<EOF || add_cflags -FIstdlib.h
6091 __declspec($_restrict) void* foo(int);
6092 EOF
6093     fi
6094     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6095 fi
6096
6097 for pfx in "" host_; do
6098     varname=${pfx%_}cc_type
6099     eval "type=\$$varname"
6100     if [ $type = "msvc" ]; then
6101         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6102 static inline int foo(int a) { return a; }
6103 EOF
6104     fi
6105 done
6106
6107 case $as_type in
6108     clang)
6109         add_asflags -Qunused-arguments
6110     ;;
6111 esac
6112
6113 case $ld_type in
6114     clang)
6115         check_ldflags -Qunused-arguments
6116     ;;
6117 esac
6118
6119 case $target_os in
6120     osf1)
6121         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6122     ;;
6123     plan9)
6124         add_cppflags -Dmain=plan9_main
6125     ;;
6126 esac
6127
6128 enable frame_thread_encoder
6129
6130 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6131
6132 check_deps $CONFIG_LIST       \
6133            $CONFIG_EXTRA      \
6134            $HAVE_LIST         \
6135            $ALL_COMPONENTS    \
6136
6137 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"
6138
6139
6140 if test $target_os = "haiku"; then
6141     disable memalign
6142     disable posix_memalign
6143 fi
6144
6145 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6146     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6147     enable dxva2_lib
6148
6149 ! enabled_any memalign posix_memalign aligned_malloc &&
6150     enabled simd_align_16 && enable memalign_hack
6151
6152 # add_dep lib dep
6153 # -> enable ${lib}_deps_${dep}
6154 # -> add $dep to ${lib}_deps only once
6155 add_dep() {
6156     lib=$1
6157     dep=$2
6158     enabled "${lib}_deps_${dep}" && return 0
6159     enable  "${lib}_deps_${dep}"
6160     prepend "${lib}_deps" $dep
6161 }
6162
6163 # merge deps lib components
6164 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6165 merge_deps() {
6166     lib=$1
6167     shift
6168     for comp in $*; do
6169         enabled $comp || continue
6170         eval "dep=\"\$${comp}_deps\""
6171         for d in $dep; do
6172             add_dep $lib $d
6173         done
6174     done
6175 }
6176
6177 merge_deps libavfilter $FILTER_LIST
6178
6179 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6180
6181 for thread in $THREADS_LIST; do
6182     if enabled $thread; then
6183         test -n "$thread_type" &&
6184             die "ERROR: Only one thread type must be selected." ||
6185             thread_type="$thread"
6186     fi
6187 done
6188
6189 enabled zlib && add_cppflags -DZLIB_CONST
6190
6191 # conditional library dependencies, in linking order
6192 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6193 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6194 enabled aresample_filter    && prepend avfilter_deps "swresample"
6195 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6196 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6197 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6198 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6199 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6200 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6201 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6202 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6203 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6204 enabled pan_filter          && prepend avfilter_deps "swresample"
6205 enabled pp_filter           && prepend avfilter_deps "postproc"
6206 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6207 enabled resample_filter && prepend avfilter_deps "avresample"
6208 enabled sab_filter          && prepend avfilter_deps "swscale"
6209 enabled scale_filter    && prepend avfilter_deps "swscale"
6210 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6211 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6212 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6213 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6214 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6215 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6216 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6217 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6218 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6219
6220 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6221
6222 enabled opus_decoder    && prepend avcodec_deps "swresample"
6223
6224 expand_deps(){
6225     lib_deps=${1}_deps
6226     eval "deps=\$$lib_deps"
6227     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6228     unique $lib_deps
6229 }
6230
6231 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6232 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6233
6234 map 'expand_deps $v' $LIBRARY_LIST
6235
6236 echo "install prefix            $prefix"
6237 echo "source path               $source_path"
6238 echo "C compiler                $cc"
6239 echo "C library                 $libc_type"
6240 if test "$host_cc" != "$cc"; then
6241     echo "host C compiler           $host_cc"
6242     echo "host C library            $host_libc_type"
6243 fi
6244 echo "ARCH                      $arch ($cpu)"
6245 if test "$build_suffix" != ""; then
6246     echo "build suffix              $build_suffix"
6247 fi
6248 if test "$progs_suffix" != ""; then
6249     echo "progs suffix              $progs_suffix"
6250 fi
6251 if test "$extra_version" != ""; then
6252     echo "version string suffix     $extra_version"
6253 fi
6254 echo "big-endian                ${bigendian-no}"
6255 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6256 if enabled x86; then
6257     echo "${yasmexe}                      ${yasm-no}"
6258     echo "MMX enabled               ${mmx-no}"
6259     echo "MMXEXT enabled            ${mmxext-no}"
6260     echo "3DNow! enabled            ${amd3dnow-no}"
6261     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6262     echo "SSE enabled               ${sse-no}"
6263     echo "SSSE3 enabled             ${ssse3-no}"
6264     echo "AESNI enabled             ${aesni-no}"
6265     echo "AVX enabled               ${avx-no}"
6266     echo "XOP enabled               ${xop-no}"
6267     echo "FMA3 enabled              ${fma3-no}"
6268     echo "FMA4 enabled              ${fma4-no}"
6269     echo "i686 features enabled     ${i686-no}"
6270     echo "CMOV is fast              ${fast_cmov-no}"
6271     echo "EBX available             ${ebx_available-no}"
6272     echo "EBP available             ${ebp_available-no}"
6273 fi
6274 if enabled aarch64; then
6275     echo "NEON enabled              ${neon-no}"
6276     echo "VFP enabled               ${vfp-no}"
6277 fi
6278 if enabled arm; then
6279     echo "ARMv5TE enabled           ${armv5te-no}"
6280     echo "ARMv6 enabled             ${armv6-no}"
6281     echo "ARMv6T2 enabled           ${armv6t2-no}"
6282     echo "VFP enabled               ${vfp-no}"
6283     echo "NEON enabled              ${neon-no}"
6284     echo "THUMB enabled             ${thumb-no}"
6285 fi
6286 if enabled mips; then
6287     echo "MIPS FPU enabled          ${mipsfpu-no}"
6288     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6289     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6290     echo "MIPS MSA enabled          ${msa-no}"
6291     echo "LOONGSON MMI enabled      ${mmi-no}"
6292 fi
6293 if enabled ppc; then
6294     echo "AltiVec enabled           ${altivec-no}"
6295     echo "VSX enabled               ${vsx-no}"
6296     echo "POWER8 enabled            ${power8-no}"
6297     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6298     echo "dcbzl available           ${dcbzl-no}"
6299 fi
6300 echo "debug symbols             ${debug-no}"
6301 echo "strip symbols             ${stripping-no}"
6302 echo "optimize for size         ${small-no}"
6303 echo "optimizations             ${optimizations-no}"
6304 echo "static                    ${static-no}"
6305 echo "shared                    ${shared-no}"
6306 echo "postprocessing support    ${postproc-no}"
6307 echo "new filter support        ${avfilter-no}"
6308 echo "network support           ${network-no}"
6309 echo "threading support         ${thread_type-no}"
6310 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6311 echo "SDL support               ${sdl-no}"
6312 echo "opencl enabled            ${opencl-no}"
6313 echo "JNI support               ${jni-no}"
6314 echo "texi2html enabled         ${texi2html-no}"
6315 echo "perl enabled              ${perl-no}"
6316 echo "pod2man enabled           ${pod2man-no}"
6317 echo "makeinfo enabled          ${makeinfo-no}"
6318 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6319 test -n "$random_seed" &&
6320     echo "random seed               ${random_seed}"
6321 echo
6322
6323 echo "Enabled programs:"
6324 print_enabled '' $PROGRAM_LIST | print_in_columns
6325 echo
6326
6327 echo "External libraries:"
6328 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6329 echo
6330
6331 echo "Libraries:"
6332 print_enabled '' $LIBRARY_LIST | print_in_columns
6333 echo
6334
6335 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6336     echo "Enabled ${type}s:"
6337     eval list=\$$(toupper $type)_LIST
6338     print_enabled '_*' $list | print_in_columns
6339     echo
6340 done
6341
6342 license="LGPL version 2.1 or later"
6343 if enabled nonfree; then
6344     license="nonfree and unredistributable"
6345 elif enabled gplv3; then
6346     license="GPL version 3 or later"
6347 elif enabled lgplv3; then
6348     license="LGPL version 3 or later"
6349 elif enabled gpl; then
6350     license="GPL version 2 or later"
6351 fi
6352
6353 echo "License: $license"
6354
6355 echo "Creating config.mak, config.h, and doc/config.texi..."
6356
6357 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6358
6359 enabled stripping || strip="echo skipping strip"
6360
6361 config_files="$TMPH config.mak doc/config.texi"
6362
6363 cat > config.mak <<EOF
6364 # Automatically generated by configure - do not modify!
6365 ifndef FFMPEG_CONFIG_MAK
6366 FFMPEG_CONFIG_MAK=1
6367 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6368 prefix=$prefix
6369 LIBDIR=\$(DESTDIR)$libdir
6370 SHLIBDIR=\$(DESTDIR)$shlibdir
6371 INCDIR=\$(DESTDIR)$incdir
6372 BINDIR=\$(DESTDIR)$bindir
6373 DATADIR=\$(DESTDIR)$datadir
6374 DOCDIR=\$(DESTDIR)$docdir
6375 MANDIR=\$(DESTDIR)$mandir
6376 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6377 INSTALL_NAME_DIR=$install_name_dir
6378 SRC_PATH=$source_path
6379 SRC_LINK=$source_link
6380 ifndef MAIN_MAKEFILE
6381 SRC_PATH:=\$(SRC_PATH:.%=..%)
6382 endif
6383 CC_IDENT=$cc_ident
6384 ARCH=$arch
6385 INTRINSICS=$intrinsics
6386 CC=$cc
6387 CXX=$cxx
6388 AS=$as
6389 OBJCC=$objcc
6390 LD=$ld
6391 DEPCC=$dep_cc
6392 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6393 DEPAS=$as
6394 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6395 YASM=$yasmexe
6396 DEPYASM=$yasmexe
6397 AR=$ar
6398 ARFLAGS=$arflags
6399 AR_O=$ar_o
6400 RANLIB=$ranlib
6401 STRIP=$strip
6402 CP=cp -p
6403 LN_S=$ln_s
6404 CPPFLAGS=$CPPFLAGS
6405 CFLAGS=$CFLAGS
6406 CXXFLAGS=$CXXFLAGS
6407 OBJCFLAGS=$OBJCFLAGS
6408 ASFLAGS=$ASFLAGS
6409 AS_C=$AS_C
6410 AS_O=$AS_O
6411 OBJCC_C=$OBJCC_C
6412 OBJCC_E=$OBJCC_E
6413 OBJCC_O=$OBJCC_O
6414 CC_C=$CC_C
6415 CC_E=$CC_E
6416 CC_O=$CC_O
6417 CXX_C=$CXX_C
6418 CXX_O=$CXX_O
6419 LD_O=$LD_O
6420 LD_LIB=$LD_LIB
6421 LD_PATH=$LD_PATH
6422 DLLTOOL=$dlltool
6423 WINDRES=$windres
6424 DEPWINDRES=$dep_cc
6425 DOXYGEN=$doxygen
6426 LDFLAGS=$LDFLAGS
6427 LDEXEFLAGS=$LDEXEFLAGS
6428 LDLIBFLAGS=$LDLIBFLAGS
6429 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6430 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6431 YASMFLAGS=$YASMFLAGS
6432 BUILDSUF=$build_suffix
6433 PROGSSUF=$progs_suffix
6434 FULLNAME=$FULLNAME
6435 LIBPREF=$LIBPREF
6436 LIBSUF=$LIBSUF
6437 LIBNAME=$LIBNAME
6438 SLIBPREF=$SLIBPREF
6439 SLIBSUF=$SLIBSUF
6440 EXESUF=$EXESUF
6441 EXTRA_VERSION=$extra_version
6442 CCDEP=$CCDEP
6443 CXXDEP=$CXXDEP
6444 CCDEP_FLAGS=$CCDEP_FLAGS
6445 ASDEP=$ASDEP
6446 ASDEP_FLAGS=$ASDEP_FLAGS
6447 CC_DEPFLAGS=$CC_DEPFLAGS
6448 AS_DEPFLAGS=$AS_DEPFLAGS
6449 HOSTCC=$host_cc
6450 HOSTLD=$host_ld
6451 HOSTCFLAGS=$host_cflags
6452 HOSTCPPFLAGS=$host_cppflags
6453 HOSTEXESUF=$HOSTEXESUF
6454 HOSTLDFLAGS=$host_ldflags
6455 HOSTLIBS=$host_libs
6456 DEPHOSTCC=$host_cc
6457 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6458 HOSTCCDEP=$HOSTCCDEP
6459 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6460 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6461 HOSTCC_C=$HOSTCC_C
6462 HOSTCC_O=$HOSTCC_O
6463 HOSTLD_O=$HOSTLD_O
6464 TARGET_EXEC=$target_exec $target_exec_args
6465 TARGET_PATH=$target_path
6466 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6467 CFLAGS-ffplay=$sdl_cflags
6468 ZLIB=$($ldflags_filter -lz)
6469 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6470 EXTRALIBS=$extralibs
6471 COMPAT_OBJS=$compat_objs
6472 EXEOBJS=$exeobjs
6473 INSTALL=$install
6474 LIBTARGET=${LIBTARGET}
6475 SLIBNAME=${SLIBNAME}
6476 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6477 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6478 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6479 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6480 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6481 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6482 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6483 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6484 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6485 NOREDZONE_FLAGS=$noredzone_flags
6486 EOF
6487
6488 get_version(){
6489     lcname=lib${1}
6490     name=$(toupper $lcname)
6491     file=$source_path/$lcname/version.h
6492     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6493     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6494     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6495     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6496     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6497     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6498 }
6499
6500 map 'get_version $v' $LIBRARY_LIST
6501
6502 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6503
6504 print_program_libs(){
6505     eval "program_libs=\$${1}_libs"
6506     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6507 }
6508
6509 map 'print_program_libs $v' $PROGRAM_LIST
6510
6511 cat > $TMPH <<EOF
6512 /* Automatically generated by configure - do not modify! */
6513 #ifndef FFMPEG_CONFIG_H
6514 #define FFMPEG_CONFIG_H
6515 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6516 #define FFMPEG_LICENSE "$(c_escape $license)"
6517 #define CONFIG_THIS_YEAR 2016
6518 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6519 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6520 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6521 #define av_restrict $_restrict
6522 #define EXTERN_PREFIX "${extern_prefix}"
6523 #define EXTERN_ASM ${extern_prefix}
6524 #define BUILDSUF "$build_suffix"
6525 #define SLIBSUF "$SLIBSUF"
6526 #define HAVE_MMX2 HAVE_MMXEXT
6527 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6528 EOF
6529
6530 test -n "$assert_level" &&
6531     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6532
6533 test -n "$malloc_prefix" &&
6534     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6535
6536 if enabled yasm; then
6537     append config_files $TMPASM
6538     printf '' >$TMPASM
6539 fi
6540
6541 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6542
6543
6544 mkdir -p doc
6545 mkdir -p tests
6546 mkdir -p tests/api
6547 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6548
6549 print_config ARCH_   "$config_files" $ARCH_LIST
6550 print_config HAVE_   "$config_files" $HAVE_LIST
6551 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6552                                      $CONFIG_EXTRA      \
6553                                      $ALL_COMPONENTS    \
6554
6555 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6556 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6557
6558 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6559 cp_if_changed $TMPH config.h
6560 touch .config
6561
6562 enabled yasm && cp_if_changed $TMPASM config.asm
6563
6564 cat > $TMPH <<EOF
6565 /* Generated by ffconf */
6566 #ifndef AVUTIL_AVCONFIG_H
6567 #define AVUTIL_AVCONFIG_H
6568 EOF
6569
6570 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6571
6572 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6573
6574 cp_if_changed $TMPH libavutil/avconfig.h
6575
6576 if test -n "$WARNINGS"; then
6577     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6578     enabled fatal_warnings && exit 1
6579 fi
6580
6581 # build pkg-config files
6582
6583 lib_version(){
6584     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6585 }
6586
6587 pkgconfig_generate(){
6588     name=$1
6589     shortname=${name#lib}${build_suffix}
6590     comment=$2
6591     version=$3
6592     libs=$4
6593     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6594     requires=${requires%, }
6595     enabled ${name#lib} || return 0
6596     mkdir -p $name
6597     cat <<EOF > $name/$name${build_suffix}.pc
6598 prefix=$prefix
6599 exec_prefix=\${prefix}
6600 libdir=$libdir
6601 includedir=$incdir
6602
6603 Name: $name
6604 Description: $comment
6605 Version: $version
6606 Requires: $(enabled shared || echo $requires)
6607 Requires.private: $(enabled shared && echo $requires)
6608 Conflicts:
6609 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6610 Libs.private: $(enabled shared && echo $libs)
6611 Cflags: -I\${includedir}
6612 EOF
6613
6614 mkdir -p doc/examples/pc-uninstalled
6615 includedir=${source_path}
6616 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6617     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6618 prefix=
6619 exec_prefix=
6620 libdir=\${pcfiledir}/../../../$name
6621 includedir=${includedir}
6622
6623 Name: $name
6624 Description: $comment
6625 Version: $version
6626 Requires: $requires
6627 Conflicts:
6628 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6629 Cflags: -I\${includedir}
6630 EOF
6631 }
6632
6633 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6634 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6635 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6636 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6637 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6638 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6639 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6640 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6641 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"