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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --disable-audiotoolbox   enable AudioToolbox decoders and encoders [autodetect]
 198   --enable-avisynth        enable reading of AviSynth script files [no]
 199   --disable-bzlib          disable bzlib [autodetect]
 200   --enable-cuda            enable dynamically linked CUDA [no]
 201   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 202   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 203   --enable-frei0r          enable frei0r video filtering [no]
 204   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 205                            if openssl, librtmp or gmp is not used [no]
 206   --enable-gmp             enable gmp, needed for rtmp(t)e support
 207                            if openssl or librtmp is not used [no]
 208   --enable-gnutls          enable gnutls, needed for https support
 209                            if openssl is not used [no]
 210   --disable-iconv          disable iconv [autodetect]
 211   --enable-jni             enable JNI support [no]
 212   --enable-ladspa          enable LADSPA audio filtering [no]
 213   --enable-libass          enable libass subtitles rendering,
 214                            needed for subtitles and ass filter [no]
 215   --enable-libbluray       enable BluRay reading using libbluray [no]
 216   --enable-libbs2b         enable bs2b DSP library [no]
 217   --enable-libcaca         enable textual display using libcaca [no]
 218   --enable-libcelt         enable CELT decoding via libcelt [no]
 219   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 220   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 221                            and libraw1394 [no]
 222   --enable-libfaac         enable AAC encoding via libfaac [no]
 223   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 224   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 225   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 226   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 227   --enable-libgme          enable Game Music Emu via libgme [no]
 228   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 229   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 230   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 231   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 232   --enable-libmfx          enable HW acceleration through libmfx
 233   --enable-libmodplug      enable ModPlug via libmodplug [no]
 234   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 235   --enable-libnut          enable NUT (de)muxing via libnut,
 236                            native (de)muxer exists [no]
 237   --enable-libnpp          enable NVIDIA Performance Primitives-based code [no]
 238   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 239   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 240   --enable-libopencv       enable video filtering via libopencv [no]
 241   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 242   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 243   --enable-libopus         enable Opus de/encoding via libopus [no]
 244   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 245   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 246   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 247   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 248   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 249   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 250   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 251   --enable-libsoxr         enable Include libsoxr resampling [no]
 252   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 253   --enable-libssh          enable SFTP protocol via libssh [no]
 254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 255   --enable-libtheora       enable Theora encoding via libtheora [no]
 256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 257   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 258   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 259   --enable-libvidstab      enable video stabilization using vid.stab [no]
 260   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 261   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 262                            native implementation exists [no]
 263   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 264   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 265   --enable-libwebp         enable WebP encoding via libwebp [no]
 266   --enable-libx264         enable H.264 encoding via x264 [no]
 267   --enable-libx265         enable HEVC encoding via x265 [no]
 268   --enable-libxavs         enable AVS encoding via xavs [no]
 269   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 270   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 271   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 272   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 273   --enable-libxvid         enable Xvid encoding via xvidcore,
 274                            native MPEG-4/Xvid encoder exists [no]
 275   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 276   --enable-libzmq          enable message passing via libzmq [no]
 277   --enable-libzvbi         enable teletext support via libzvbi [no]
 278   --disable-lzma           disable lzma [autodetect]
 279   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 280   --enable-mediacodec      enable Android MediaCodec support [no]
 281   --enable-mmal            enable decoding via MMAL [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-nvenc           enable NVIDIA NVENC support [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl            disable sdl [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 295   --enable-x11grab         enable X11 grabbing (legacy) [no]
 296   --disable-xlib           disable xlib [autodetect]
 297   --disable-zlib           disable zlib [autodetect]
 298
 299 Toolchain options:
 300   --arch=ARCH              select architecture [$arch]
 301   --cpu=CPU                select the minimum required CPU (affects
 302                            instruction selection, may crash on older CPUs)
 303   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 304   --progs-suffix=SUFFIX    program name suffix []
 305   --enable-cross-compile   assume a cross-compiler is used
 306   --sysroot=PATH           root of cross-build tree
 307   --sysinclude=PATH        location of cross-build system headers
 308   --target-os=OS           compiler targets OS [$target_os]
 309   --target-exec=CMD        command to run executables on target
 310   --target-path=DIR        path to view of build directory on target
 311   --target-samples=DIR     path to samples directory on target
 312   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 313   --toolchain=NAME         set tool defaults according to NAME
 314   --nm=NM                  use nm tool NM [$nm_default]
 315   --ar=AR                  use archive tool AR [$ar_default]
 316   --as=AS                  use assembler AS [$as_default]
 317   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 318   --strip=STRIP            use strip tool STRIP [$strip_default]
 319   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 320   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 321   --cc=CC                  use C compiler CC [$cc_default]
 322   --cxx=CXX                use C compiler CXX [$cxx_default]
 323   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 324   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 325   --ld=LD                  use linker LD [$ld_default]
 326   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 327   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 328   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 329   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 330   --host-cc=HOSTCC         use host C compiler HOSTCC
 331   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 332   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 333   --host-ld=HOSTLD         use host linker HOSTLD
 334   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 335   --host-libs=HLIBS        use libs HLIBS when linking for host
 336   --host-os=OS             compiler host OS [$target_os]
 337   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 338   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 339   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 340   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 341   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 342   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 343   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 344   --extra-version=STRING   version string suffix []
 345   --optflags=OPTFLAGS      override optimization-related compiler flags
 346   --build-suffix=SUFFIX    library name suffix []
 347   --enable-pic             build position-independent code
 348   --enable-thumb           compile for Thumb instruction set
 349   --enable-lto             use link-time optimization
 350   --env="ENV=override"     override the environment variables
 351
 352 Advanced options (experts only):
 353   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 354   --custom-allocator=NAME  use a supported custom allocator
 355   --disable-symver         disable symbol versioning
 356   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 357   --disable-safe-bitstream-reader
 358                            disable buffer boundary checking in bitreaders
 359                            (faster, but may crash)
 360   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 361   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 362
 363 Optimization options (experts only):
 364   --disable-asm            disable all assembly optimizations
 365   --disable-altivec        disable AltiVec optimizations
 366   --disable-vsx            disable VSX optimizations
 367   --disable-power8         disable POWER8 optimizations
 368   --disable-amd3dnow       disable 3DNow! optimizations
 369   --disable-amd3dnowext    disable 3DNow! extended optimizations
 370   --disable-mmx            disable MMX optimizations
 371   --disable-mmxext         disable MMXEXT optimizations
 372   --disable-sse            disable SSE optimizations
 373   --disable-sse2           disable SSE2 optimizations
 374   --disable-sse3           disable SSE3 optimizations
 375   --disable-ssse3          disable SSSE3 optimizations
 376   --disable-sse4           disable SSE4 optimizations
 377   --disable-sse42          disable SSE4.2 optimizations
 378   --disable-avx            disable AVX optimizations
 379   --disable-xop            disable XOP optimizations
 380   --disable-fma3           disable FMA3 optimizations
 381   --disable-fma4           disable FMA4 optimizations
 382   --disable-avx2           disable AVX2 optimizations
 383   --disable-aesni          disable AESNI optimizations
 384   --disable-armv5te        disable armv5te optimizations
 385   --disable-armv6          disable armv6 optimizations
 386   --disable-armv6t2        disable armv6t2 optimizations
 387   --disable-vfp            disable VFP optimizations
 388   --disable-neon           disable NEON optimizations
 389   --disable-inline-asm     disable use of inline assembly
 390   --disable-yasm           disable use of nasm/yasm assembly
 391   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 392   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 393   --disable-msa            disable MSA optimizations
 394   --disable-mipsfpu        disable floating point MIPS optimizations
 395   --disable-mmi            disable Loongson SIMD optimizations
 396   --disable-fast-unaligned consider unaligned accesses slow
 397
 398 Developer options (useful when working on FFmpeg itself):
 399   --disable-debug          disable debugging symbols
 400   --enable-debug=LEVEL     set the debug level [$debuglevel]
 401   --disable-optimizations  disable compiler optimizations
 402   --enable-extra-warnings  enable more compiler warnings
 403   --disable-stripping      disable stripping of executables and shared libraries
 404   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 405                            2 causes a slowdown at runtime.
 406   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 407   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 408                            leaks and errors, using the specified valgrind binary.
 409                            Cannot be combined with --target-exec
 410   --enable-ftrapv          Trap arithmetic overflows
 411   --samples=PATH           location of test samples for FATE, if not set use
 412                            \$FATE_SAMPLES at make invocation time.
 413   --enable-neon-clobber-test check NEON registers for clobbering (should be
 414                            used only for debugging purposes)
 415   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 416                            should be used only for debugging purposes)
 417   --enable-random          randomly enable/disable components
 418   --disable-random
 419   --enable-random=LIST     randomly enable/disable specific components or
 420   --disable-random=LIST    component groups. LIST is a comma-separated list
 421                            of NAME[:PROB] entries where NAME is a component
 422                            (group) and PROB the probability associated with
 423                            NAME (default 0.5).
 424   --random-seed=VALUE      seed value for --enable/disable-random
 425   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 426                            (only applies to --disable-optimizations builds)
 427
 428 NOTE: Object files are built at the place where configure is launched.
 429 EOF
 430   exit 0
 431 }
 432
 433 quotes='""'
 434 if test -t 1 && which tput >/dev/null 2>&1; then
 435     ncolors=$(tput colors)
 436     if test -n "$ncolors" && test $ncolors -ge 8; then
 437         bold_color=$(tput bold)
 438         warn_color=$(tput setaf 3)
 439         error_color=$(tput setaf 1)
 440         reset_color=$(tput sgr0)
 441     fi
 442     # 72 used instead of 80 since that's the default of pr
 443     ncols=$(tput cols)
 444 fi
 445 : ${ncols:=72}
 446
 447 log(){
 448     echo "$@" >> $logfile
 449 }
 450
 451 log_file(){
 452     log BEGIN $1
 453     pr -n -t $1 >> $logfile
 454     log END $1
 455 }
 456
 457 warn(){
 458     log "WARNING: $*"
 459     WARNINGS="${WARNINGS}WARNING: $*\n"
 460 }
 461
 462 die(){
 463     log "$@"
 464     echo "$error_color$bold_color$@$reset_color"
 465     cat <<EOF
 466
 467 If you think configure made a mistake, make sure you are using the latest
 468 version from Git.  If the latest version fails, report the problem to the
 469 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 470 EOF
 471     if disabled logging; then
 472         cat <<EOF
 473 Rerun configure with logging enabled (do not use --disable-logging), and
 474 include the log this produces with your report.
 475 EOF
 476     else
 477         cat <<EOF
 478 Include the log file "$logfile" produced by configure as this will help
 479 solve the problem.
 480 EOF
 481     fi
 482     exit 1
 483 }
 484
 485 # Avoid locale weirdness, besides we really just want to translate ASCII.
 486 toupper(){
 487     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 488 }
 489
 490 tolower(){
 491     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 492 }
 493
 494 c_escape(){
 495     echo "$*" | sed 's/["\\]/\\\0/g'
 496 }
 497
 498 sh_quote(){
 499     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 500     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 501     echo "$v"
 502 }
 503
 504 cleanws(){
 505     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 506 }
 507
 508 filter(){
 509     pat=$1
 510     shift
 511     for v; do
 512         eval "case $v in $pat) echo $v ;; esac"
 513     done
 514 }
 515
 516 filter_out(){
 517     pat=$1
 518     shift
 519     for v; do
 520         eval "case $v in $pat) ;; *) echo $v ;; esac"
 521     done
 522 }
 523
 524 map(){
 525     m=$1
 526     shift
 527     for v; do eval $m; done
 528 }
 529
 530 add_suffix(){
 531     suffix=$1
 532     shift
 533     for v; do echo ${v}${suffix}; done
 534 }
 535
 536 set_all(){
 537     value=$1
 538     shift
 539     for var in $*; do
 540         eval $var=$value
 541     done
 542 }
 543
 544 set_weak(){
 545     value=$1
 546     shift
 547     for var; do
 548         eval : \${$var:=$value}
 549     done
 550 }
 551
 552 sanitize_var_name(){
 553     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 554 }
 555
 556 set_safe(){
 557     var=$1
 558     shift
 559     eval $(sanitize_var_name "$var")='$*'
 560 }
 561
 562 get_safe(){
 563     eval echo \$$(sanitize_var_name "$1")
 564 }
 565
 566 pushvar(){
 567     for pvar in $*; do
 568         eval level=\${${pvar}_level:=0}
 569         eval ${pvar}_${level}="\$$pvar"
 570         eval ${pvar}_level=$(($level+1))
 571     done
 572 }
 573
 574 popvar(){
 575     for pvar in $*; do
 576         eval level=\${${pvar}_level:-0}
 577         test $level = 0 && continue
 578         eval level=$(($level-1))
 579         eval $pvar="\${${pvar}_${level}}"
 580         eval ${pvar}_level=$level
 581         eval unset ${pvar}_${level}
 582     done
 583 }
 584
 585 enable(){
 586     set_all yes $*
 587 }
 588
 589 disable(){
 590     set_all no $*
 591 }
 592
 593 enable_weak(){
 594     set_weak yes $*
 595 }
 596
 597 disable_weak(){
 598     set_weak no $*
 599 }
 600
 601 enable_safe(){
 602     for var; do
 603         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 604     done
 605 }
 606
 607 disable_safe(){
 608     for var; do
 609         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 610     done
 611 }
 612
 613 do_enable_deep(){
 614     for var; do
 615         enabled $var && continue
 616         eval sel="\$${var}_select"
 617         eval sgs="\$${var}_suggest"
 618         pushvar var sgs
 619         enable_deep $sel
 620         popvar sgs
 621         enable_deep_weak $sgs
 622         popvar var
 623     done
 624 }
 625
 626 enable_deep(){
 627     do_enable_deep $*
 628     enable $*
 629 }
 630
 631 enable_deep_weak(){
 632     for var; do
 633         disabled $var && continue
 634         pushvar var
 635         do_enable_deep $var
 636         popvar var
 637         enable_weak $var
 638     done
 639 }
 640
 641 enabled(){
 642     test "${1#!}" = "$1" && op='=' || op=!=
 643     eval test "x\$${1#!}" $op "xyes"
 644 }
 645
 646 disabled(){
 647     test "${1#!}" = "$1" && op='=' || op=!=
 648     eval test "x\$${1#!}" $op "xno"
 649 }
 650
 651 enabled_all(){
 652     for opt; do
 653         enabled $opt || return 1
 654     done
 655 }
 656
 657 disabled_all(){
 658     for opt; do
 659         disabled $opt || return 1
 660     done
 661 }
 662
 663 enabled_any(){
 664     for opt; do
 665         enabled $opt && return 0
 666     done
 667 }
 668
 669 disabled_any(){
 670     for opt; do
 671         disabled $opt && return 0
 672     done
 673     return 1
 674 }
 675
 676 set_default(){
 677     for opt; do
 678         eval : \${$opt:=\$${opt}_default}
 679     done
 680 }
 681
 682 is_in(){
 683     value=$1
 684     shift
 685     for var in $*; do
 686         [ $var = $value ] && return 0
 687     done
 688     return 1
 689 }
 690
 691 do_check_deps(){
 692     for cfg; do
 693         cfg="${cfg#!}"
 694         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 695         disabled ${cfg}_checking && continue
 696         enable ${cfg}_checking
 697         append allopts $cfg
 698
 699         eval dep_all="\$${cfg}_deps"
 700         eval dep_any="\$${cfg}_deps_any"
 701         eval dep_sel="\$${cfg}_select"
 702         eval dep_sgs="\$${cfg}_suggest"
 703         eval dep_ifa="\$${cfg}_if"
 704         eval dep_ifn="\$${cfg}_if_any"
 705
 706         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 707         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 708         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 709
 710         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 711         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 712         enabled_all  $dep_all || disable $cfg
 713         enabled_any  $dep_any || disable $cfg
 714         disabled_any $dep_sel && disable $cfg
 715
 716         if enabled $cfg; then
 717             enable_deep $dep_sel
 718             enable_deep_weak $dep_sgs
 719         fi
 720
 721         disable ${cfg}_checking
 722     done
 723 }
 724
 725 check_deps(){
 726     unset allopts
 727
 728     do_check_deps "$@"
 729
 730     for cfg in $allopts; do
 731         enabled $cfg || continue
 732         eval dep_extralibs="\$${cfg}_extralibs"
 733         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 734     done
 735 }
 736
 737 print_config(){
 738     pfx=$1
 739     files=$2
 740     shift 2
 741     map 'eval echo "$v \${$v:-no}"' "$@" |
 742     awk "BEGIN { split(\"$files\", files) }
 743         {
 744             c = \"$pfx\" toupper(\$1);
 745             v = \$2;
 746             sub(/yes/, 1, v);
 747             sub(/no/,  0, v);
 748             for (f in files) {
 749                 file = files[f];
 750                 if (file ~ /\\.h\$/) {
 751                     printf(\"#define %s %d\\n\", c, v) >>file;
 752                 } else if (file ~ /\\.asm\$/) {
 753                     printf(\"%%define %s %d\\n\", c, v) >>file;
 754                 } else if (file ~ /\\.mak\$/) {
 755                     n = -v ? \"\" : \"!\";
 756                     printf(\"%s%s=yes\\n\", n, c) >>file;
 757                 } else if (file ~ /\\.texi\$/) {
 758                     pre = -v ? \"\" : \"@c \";
 759                     yesno = \$2;
 760                     c2 = tolower(c);
 761                     gsub(/_/, \"-\", c2);
 762                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 763                 }
 764             }
 765         }"
 766 }
 767
 768 print_enabled(){
 769     suf=$1
 770     shift
 771     for v; do
 772         enabled $v && printf "%s\n" ${v%$suf};
 773     done
 774 }
 775
 776 append(){
 777     var=$1
 778     shift
 779     eval "$var=\"\$$var $*\""
 780 }
 781
 782 prepend(){
 783     var=$1
 784     shift
 785     eval "$var=\"$* \$$var\""
 786 }
 787
 788 unique(){
 789     var=$1
 790     uniq_list=""
 791     for tok in $(eval echo \$$var); do
 792         uniq_list="$(filter_out $tok $uniq_list) $tok"
 793     done
 794     eval "$var=\"${uniq_list}\""
 795 }
 796
 797 add_cppflags(){
 798     append CPPFLAGS "$@"
 799 }
 800
 801 add_cflags(){
 802     append CFLAGS $($cflags_filter "$@")
 803 }
 804
 805 add_cxxflags(){
 806     append CXXFLAGS $($cflags_filter "$@")
 807 }
 808
 809 add_asflags(){
 810     append ASFLAGS $($asflags_filter "$@")
 811 }
 812
 813 add_objcflags(){
 814     append OBJCFLAGS $($objcflags_filter "$@")
 815 }
 816
 817 add_ldflags(){
 818     append LDFLAGS $($ldflags_filter "$@")
 819 }
 820
 821 add_ldexeflags(){
 822     append LDEXEFLAGS $($ldflags_filter "$@")
 823 }
 824
 825 add_ldlibflags(){
 826     append LDLIBFLAGS $($ldflags_filter "$@")
 827 }
 828
 829 add_stripflags(){
 830     append ASMSTRIPFLAGS "$@"
 831 }
 832
 833 add_extralibs(){
 834     prepend extralibs $($ldflags_filter "$@")
 835 }
 836
 837 add_host_cppflags(){
 838     append host_cppflags "$@"
 839 }
 840
 841 add_host_cflags(){
 842     append host_cflags $($host_cflags_filter "$@")
 843 }
 844
 845 add_host_ldflags(){
 846     append host_ldflags $($host_ldflags_filter "$@")
 847 }
 848
 849 add_compat(){
 850     append compat_objs $1
 851     shift
 852     map 'add_cppflags -D$v' "$@"
 853 }
 854
 855 check_cmd(){
 856     log "$@"
 857     "$@" >> $logfile 2>&1
 858 }
 859
 860 check_stat(){
 861     log check_stat "$@"
 862     stat "$1" >> $logfile 2>&1
 863 }
 864
 865 cc_o(){
 866     eval printf '%s\\n' $CC_O
 867 }
 868
 869 cc_e(){
 870     eval printf '%s\\n' $CC_E
 871 }
 872
 873 check_cc(){
 874     log check_cc "$@"
 875     cat > $TMPC
 876     log_file $TMPC
 877     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 878 }
 879
 880 check_cxx(){
 881     log check_cxx "$@"
 882     cat > $TMPCPP
 883     log_file $TMPCPP
 884     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 885 }
 886
 887 check_objcc(){
 888     log check_objcc "$@"
 889     cat > $TMPM
 890     log_file $TMPM
 891     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 892 }
 893
 894 check_cpp(){
 895     log check_cpp "$@"
 896     cat > $TMPC
 897     log_file $TMPC
 898     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 899 }
 900
 901 as_o(){
 902     eval printf '%s\\n' $AS_O
 903 }
 904
 905 check_as(){
 906     log check_as "$@"
 907     cat > $TMPS
 908     log_file $TMPS
 909     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 910 }
 911
 912 check_inline_asm(){
 913     log check_inline_asm "$@"
 914     name="$1"
 915     code="$2"
 916     shift 2
 917     disable $name
 918     check_cc "$@" <<EOF && enable $name
 919 void foo(void){ __asm__ volatile($code); }
 920 EOF
 921 }
 922
 923 check_inline_asm_flags(){
 924     log check_inline_asm_flags "$@"
 925     name="$1"
 926     code="$2"
 927     flags=''
 928     shift 2
 929     while [ "$1" != "" ]; do
 930       append flags $1
 931       shift
 932     done;
 933     disable $name
 934     cat > $TMPC <<EOF
 935 void foo(void){ __asm__ volatile($code); }
 936 EOF
 937     log_file $TMPC
 938     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 939     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 940 }
 941
 942 check_insn(){
 943     log check_insn "$@"
 944     check_inline_asm ${1}_inline "\"$2\""
 945     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 946 }
 947
 948 check_yasm(){
 949     log check_yasm "$@"
 950     echo "$1" > $TMPS
 951     log_file $TMPS
 952     shift 1
 953     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 954 }
 955
 956 ld_o(){
 957     eval printf '%s\\n' $LD_O
 958 }
 959
 960 check_ld(){
 961     log check_ld "$@"
 962     type=$1
 963     shift 1
 964     flags=$(filter_out '-l*|*.so' $@)
 965     libs=$(filter '-l*|*.so' $@)
 966     check_$type $($cflags_filter $flags) || return
 967     flags=$($ldflags_filter $flags)
 968     libs=$($ldflags_filter $libs)
 969     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 970 }
 971
 972 print_include(){
 973     hdr=$1
 974     test "${hdr%.h}" = "${hdr}" &&
 975         echo "#include $hdr"    ||
 976         echo "#include <$hdr>"
 977 }
 978
 979 check_code(){
 980     log check_code "$@"
 981     check=$1
 982     headers=$2
 983     code=$3
 984     shift 3
 985     {
 986         for hdr in $headers; do
 987             print_include $hdr
 988         done
 989         echo "int main(void) { $code; return 0; }"
 990     } | check_$check "$@"
 991 }
 992
 993 check_cppflags(){
 994     log check_cppflags "$@"
 995     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 996 int x;
 997 EOF
 998 }
 999
1000 test_cflags(){
1001     log test_cflags "$@"
1002     set -- $($cflags_filter "$@")
1003     check_cc "$@" <<EOF
1004 int x;
1005 EOF
1006 }
1007
1008 check_cflags(){
1009     log check_cflags "$@"
1010     test_cflags "$@" && add_cflags "$@"
1011 }
1012
1013 check_cxxflags(){
1014     log check_cxxflags "$@"
1015     set -- $($cflags_filter "$@")
1016     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1017 int x;
1018 EOF
1019 }
1020
1021 test_objcflags(){
1022     log test_cflags "$@"
1023     set -- $($cflags_filter "$@")
1024     check_objcc "$@" <<EOF
1025 int x;
1026 EOF
1027 }
1028
1029 check_objcflags(){
1030     log check_cflags "$@"
1031     test_objcflags "$@" && add_objcflags "$@"
1032 }
1033
1034 test_ldflags(){
1035     log test_ldflags "$@"
1036     check_ld "cc" "$@" <<EOF
1037 int main(void){ return 0; }
1038 EOF
1039 }
1040
1041 check_ldflags(){
1042     log check_ldflags "$@"
1043     test_ldflags "$@" && add_ldflags "$@"
1044 }
1045
1046 test_stripflags(){
1047     log test_stripflags "$@"
1048     # call check_cc to get a fresh TMPO
1049     check_cc <<EOF
1050 int main(void) { return 0; }
1051 EOF
1052     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1053 }
1054
1055 check_stripflags(){
1056     log check_stripflags "$@"
1057     test_stripflags "$@" && add_stripflags "$@"
1058 }
1059
1060 check_header(){
1061     log check_header "$@"
1062     header=$1
1063     shift
1064     disable_safe $header
1065     check_cpp "$@" <<EOF && enable_safe $header
1066 #include <$header>
1067 int x;
1068 EOF
1069 }
1070
1071 check_header_objcc(){
1072     log check_header_objcc "$@"
1073     rm -f -- "$TMPO"
1074     header=$1
1075     shift
1076     disable_safe $header
1077     {
1078        echo "#include <$header>"
1079        echo "int main(void) { return 0; }"
1080     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1081 }
1082
1083 check_func(){
1084     log check_func "$@"
1085     func=$1
1086     shift
1087     disable $func
1088     check_ld "cc" "$@" <<EOF && enable $func
1089 extern int $func();
1090 int main(void){ $func(); }
1091 EOF
1092 }
1093
1094 check_complexfunc(){
1095     log check_complexfunc "$@"
1096     func=$1
1097     narg=$2
1098     shift 2
1099     test $narg = 2 && args="f, g" || args="f * I"
1100     disable $func
1101     check_ld "cc" "$@" <<EOF && enable $func
1102 #include <complex.h>
1103 #include <math.h>
1104 float foo(complex float f, complex float g) { return $func($args); }
1105 int main(void){ return (int) foo; }
1106 EOF
1107 }
1108
1109 check_mathfunc(){
1110     log check_mathfunc "$@"
1111     func=$1
1112     narg=$2
1113     shift 2
1114     test $narg = 2 && args="f, g" || args="f"
1115     disable $func
1116     check_ld "cc" "$@" <<EOF && enable $func
1117 #include <math.h>
1118 float foo(float f, float g) { return $func($args); }
1119 int main(void){ return (int) foo; }
1120 EOF
1121 }
1122
1123 check_func_headers(){
1124     log check_func_headers "$@"
1125     headers=$1
1126     funcs=$2
1127     shift 2
1128     {
1129         for hdr in $headers; do
1130             print_include $hdr
1131         done
1132         for func in $funcs; do
1133             echo "long check_$func(void) { return (long) $func; }"
1134         done
1135         echo "int main(void) { return 0; }"
1136     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1137 }
1138
1139 check_class_headers_cpp(){
1140     log check_class_headers_cpp "$@"
1141     headers=$1
1142     classes=$2
1143     shift 2
1144     {
1145         for hdr in $headers; do
1146             echo "#include <$hdr>"
1147         done
1148         echo "int main(void) { "
1149         i=1
1150         for class in $classes; do
1151             echo "$class obj$i;"
1152             i=$(expr $i + 1)
1153         done
1154         echo "return 0; }"
1155     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1156 }
1157
1158 check_cpp_condition(){
1159     log check_cpp_condition "$@"
1160     header=$1
1161     condition=$2
1162     shift 2
1163     check_cpp "$@" <<EOF
1164 #include <$header>
1165 #if !($condition)
1166 #error "unsatisfied condition: $condition"
1167 #endif
1168 EOF
1169 }
1170
1171 check_lib(){
1172     log check_lib "$@"
1173     header="$1"
1174     func="$2"
1175     shift 2
1176     check_header $header && check_func $func "$@" && add_extralibs "$@"
1177 }
1178
1179 check_lib2(){
1180     log check_lib2 "$@"
1181     headers="$1"
1182     funcs="$2"
1183     shift 2
1184     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1185 }
1186
1187 check_lib_cpp(){
1188     log check_lib_cpp "$@"
1189     headers="$1"
1190     classes="$2"
1191     shift 2
1192     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1193 }
1194
1195 check_pkg_config(){
1196     log check_pkg_config "$@"
1197     pkgandversion="$1"
1198     pkg="${1%% *}"
1199     headers="$2"
1200     funcs="$3"
1201     shift 3
1202     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1203     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1204     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1205     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1206         set_safe "${pkg}_cflags" $pkg_cflags   &&
1207         set_safe "${pkg}_libs"   $pkg_libs
1208 }
1209
1210 check_exec(){
1211     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1212 }
1213
1214 check_exec_crash(){
1215     code=$(cat)
1216
1217     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1218     # are safe but may not be available everywhere.  Thus we use
1219     # raise(SIGTERM) instead.  The check is run in a subshell so we
1220     # can redirect the "Terminated" message from the shell.  SIGBUS
1221     # is not defined by standard C so it is used conditionally.
1222
1223     (check_exec "$@") >> $logfile 2>&1 <<EOF
1224 #include <signal.h>
1225 static void sighandler(int sig){
1226     raise(SIGTERM);
1227 }
1228 int foo(void){
1229     $code
1230 }
1231 int (*func_ptr)(void) = foo;
1232 int main(void){
1233     signal(SIGILL, sighandler);
1234     signal(SIGFPE, sighandler);
1235     signal(SIGSEGV, sighandler);
1236 #ifdef SIGBUS
1237     signal(SIGBUS, sighandler);
1238 #endif
1239     return func_ptr();
1240 }
1241 EOF
1242 }
1243
1244 check_type(){
1245     log check_type "$@"
1246     headers=$1
1247     type=$2
1248     shift 2
1249     disable_safe "$type"
1250     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1251 }
1252
1253 check_struct(){
1254     log check_struct "$@"
1255     headers=$1
1256     struct=$2
1257     member=$3
1258     shift 3
1259     disable_safe "${struct}_${member}"
1260     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1261         enable_safe "${struct}_${member}"
1262 }
1263
1264 check_builtin(){
1265     log check_builtin "$@"
1266     name=$1
1267     headers=$2
1268     builtin=$3
1269     shift 3
1270     disable "$name"
1271     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1272 }
1273
1274 check_compile_assert(){
1275     log check_compile_assert "$@"
1276     name=$1
1277     headers=$2
1278     condition=$3
1279     shift 3
1280     disable "$name"
1281     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1282 }
1283
1284 require(){
1285     name="$1"
1286     header="$2"
1287     func="$3"
1288     shift 3
1289     check_lib $header $func "$@" || die "ERROR: $name not found"
1290 }
1291
1292 require2(){
1293     name="$1"
1294     headers="$2"
1295     func="$3"
1296     shift 3
1297     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1298 }
1299
1300 require_cpp(){
1301     name="$1"
1302     headers="$2"
1303     classes="$3"
1304     shift 3
1305     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1306 }
1307
1308 use_pkg_config(){
1309     pkg="$1"
1310     check_pkg_config "$@" || return 1
1311     add_cflags    $(get_safe "${pkg}_cflags")
1312     add_extralibs $(get_safe "${pkg}_libs")
1313 }
1314
1315 require_pkg_config(){
1316     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1317 }
1318
1319 require_libfreetype(){
1320     log require_libfreetype "$@"
1321     pkg="freetype2"
1322     check_cmd $pkg_config --exists --print-errors $pkg \
1323       || die "ERROR: $pkg not found"
1324     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1325     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1326     {
1327         echo "#include <ft2build.h>"
1328         echo "#include FT_FREETYPE_H"
1329         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1330         echo "int main(void) { return 0; }"
1331     } | check_ld "cc" $pkg_cflags $pkg_libs \
1332       && set_safe "${pkg}_cflags" $pkg_cflags \
1333       && set_safe "${pkg}_libs"   $pkg_libs \
1334       || die "ERROR: $pkg not found"
1335     add_cflags    $(get_safe "${pkg}_cflags")
1336     add_extralibs $(get_safe "${pkg}_libs")
1337 }
1338
1339 hostcc_e(){
1340     eval printf '%s\\n' $HOSTCC_E
1341 }
1342
1343 hostcc_o(){
1344     eval printf '%s\\n' $HOSTCC_O
1345 }
1346
1347 check_host_cc(){
1348     log check_host_cc "$@"
1349     cat > $TMPC
1350     log_file $TMPC
1351     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1352 }
1353
1354 check_host_cpp(){
1355     log check_host_cpp "$@"
1356     cat > $TMPC
1357     log_file $TMPC
1358     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1359 }
1360
1361 check_host_cppflags(){
1362     log check_host_cppflags "$@"
1363     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1364 int x;
1365 EOF
1366 }
1367
1368 check_host_cflags(){
1369     log check_host_cflags "$@"
1370     set -- $($host_cflags_filter "$@")
1371     check_host_cc "$@" <<EOF && append host_cflags "$@"
1372 int x;
1373 EOF
1374 }
1375
1376 check_host_cpp_condition(){
1377     log check_host_cpp_condition "$@"
1378     header=$1
1379     condition=$2
1380     shift 2
1381     check_host_cpp "$@" <<EOF
1382 #include <$header>
1383 #if !($condition)
1384 #error "unsatisfied condition: $condition"
1385 #endif
1386 EOF
1387 }
1388
1389 cp_if_changed(){
1390     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1391     mkdir -p "$(dirname $2)"
1392     $cp_f "$1" "$2"
1393 }
1394
1395 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1396 # system-dependent things.
1397
1398 AVCODEC_COMPONENTS="
1399     bsfs
1400     decoders
1401     encoders
1402     hwaccels
1403     parsers
1404 "
1405
1406 AVDEVICE_COMPONENTS="
1407     indevs
1408     outdevs
1409 "
1410 AVFILTER_COMPONENTS="
1411     filters
1412 "
1413 AVFORMAT_COMPONENTS="
1414     demuxers
1415     muxers
1416     protocols
1417 "
1418
1419 AVRESAMPLE_COMPONENTS=""
1420 AVUTIL_COMPONENTS=""
1421
1422 COMPONENT_LIST="
1423     $AVCODEC_COMPONENTS
1424     $AVDEVICE_COMPONENTS
1425     $AVFILTER_COMPONENTS
1426     $AVFORMAT_COMPONENTS
1427     $AVRESAMPLE_COMPONENTS
1428     $AVUTIL_COMPONENTS
1429 "
1430
1431 EXAMPLE_LIST="
1432     avio_reading_example
1433     avio_dir_cmd_example
1434     decoding_encoding_example
1435     demuxing_decoding_example
1436     extract_mvs_example
1437     filter_audio_example
1438     filtering_audio_example
1439     filtering_video_example
1440     metadata_example
1441     muxing_example
1442     qsvdec_example
1443     remuxing_example
1444     resampling_audio_example
1445     scaling_video_example
1446     transcode_aac_example
1447     transcoding_example
1448 "
1449
1450 EXTERNAL_LIBRARY_LIST="
1451     audiotoolbox
1452     avisynth
1453     bzlib
1454     chromaprint
1455     crystalhd
1456     cuda
1457     decklink
1458     frei0r
1459     gcrypt
1460     gmp
1461     gnutls
1462     iconv
1463     jni
1464     ladspa
1465     libass
1466     libbluray
1467     libbs2b
1468     libcaca
1469     libcdio
1470     libcelt
1471     libdc1394
1472     libfaac
1473     libfdk_aac
1474     libflite
1475     libfontconfig
1476     libfreetype
1477     libfribidi
1478     libgme
1479     libgsm
1480     libiec61883
1481     libilbc
1482     libkvazaar
1483     libmfx
1484     libmodplug
1485     libmp3lame
1486     libnut
1487     libnpp
1488     libopencore_amrnb
1489     libopencore_amrwb
1490     libopencv
1491     libopenh264
1492     libopenjpeg
1493     libopus
1494     libpulse
1495     librtmp
1496     librubberband
1497     libschroedinger
1498     libshine
1499     libsmbclient
1500     libsnappy
1501     libsoxr
1502     libspeex
1503     libssh
1504     libtesseract
1505     libtheora
1506     libtwolame
1507     libutvideo
1508     libv4l2
1509     libvidstab
1510     libvo_amrwbenc
1511     libvorbis
1512     libvpx
1513     libwavpack
1514     libwebp
1515     libx264
1516     libx265
1517     libxavs
1518     libxcb
1519     libxcb_shm
1520     libxcb_shape
1521     libxcb_xfixes
1522     libxvid
1523     libzimg
1524     libzmq
1525     libzvbi
1526     lzma
1527     mediacodec
1528     mmal
1529     netcdf
1530     nvenc
1531     openal
1532     opencl
1533     opengl
1534     openssl
1535     schannel
1536     sdl
1537     securetransport
1538     videotoolbox
1539     x11grab
1540     xlib
1541     zlib
1542 "
1543
1544 DOCUMENT_LIST="
1545     doc
1546     htmlpages
1547     manpages
1548     podpages
1549     txtpages
1550 "
1551
1552 FEATURE_LIST="
1553     ftrapv
1554     gray
1555     hardcoded_tables
1556     runtime_cpudetect
1557     safe_bitstream_reader
1558     shared
1559     small
1560     static
1561     swscale_alpha
1562 "
1563
1564 HWACCEL_LIST="
1565     d3d11va
1566     dxva2
1567     vaapi
1568     vda
1569     vdpau
1570     videotoolbox_hwaccel
1571     xvmc
1572 "
1573
1574 LIBRARY_LIST="
1575     avcodec
1576     avdevice
1577     avfilter
1578     avformat
1579     avresample
1580     avutil
1581     postproc
1582     swresample
1583     swscale
1584 "
1585
1586 LICENSE_LIST="
1587     gpl
1588     nonfree
1589     version3
1590 "
1591
1592 PROGRAM_LIST="
1593     ffplay
1594     ffprobe
1595     ffserver
1596     ffmpeg
1597 "
1598
1599 SUBSYSTEM_LIST="
1600     dct
1601     dwt
1602     error_resilience
1603     faan
1604     fast_unaligned
1605     fft
1606     lsp
1607     lzo
1608     mdct
1609     pixelutils
1610     network
1611     rdft
1612 "
1613
1614 CONFIG_LIST="
1615     $COMPONENT_LIST
1616     $DOCUMENT_LIST
1617     $EXAMPLE_LIST
1618     $EXTERNAL_LIBRARY_LIST
1619     $FEATURE_LIST
1620     $HWACCEL_LIST
1621     $LICENSE_LIST
1622     $LIBRARY_LIST
1623     $PROGRAM_LIST
1624     $SUBSYSTEM_LIST
1625     fontconfig
1626     incompatible_libav_abi
1627     memalign_hack
1628     memory_poisoning
1629     neon_clobber_test
1630     pic
1631     pod2man
1632     raise_major
1633     thumb
1634     valgrind_backtrace
1635     xmm_clobber_test
1636 "
1637
1638 THREADS_LIST="
1639     pthreads
1640     os2threads
1641     w32threads
1642 "
1643
1644 ATOMICS_LIST="
1645     atomics_gcc
1646     atomics_suncc
1647     atomics_win32
1648 "
1649
1650 ARCH_LIST="
1651     aarch64
1652     alpha
1653     arm
1654     avr32
1655     avr32_ap
1656     avr32_uc
1657     bfin
1658     ia64
1659     m68k
1660     mips
1661     mips64
1662     parisc
1663     ppc
1664     ppc64
1665     s390
1666     sh4
1667     sparc
1668     sparc64
1669     tilegx
1670     tilepro
1671     tomi
1672     x86
1673     x86_32
1674     x86_64
1675 "
1676
1677 ARCH_EXT_LIST_ARM="
1678     armv5te
1679     armv6
1680     armv6t2
1681     armv8
1682     neon
1683     vfp
1684     vfpv3
1685     setend
1686 "
1687
1688 ARCH_EXT_LIST_MIPS="
1689     mipsfpu
1690     mips32r2
1691     mips32r5
1692     mips64r2
1693     mips32r6
1694     mips64r6
1695     mipsdsp
1696     mipsdspr2
1697     msa
1698 "
1699
1700 ARCH_EXT_LIST_LOONGSON="
1701     loongson2
1702     loongson3
1703     mmi
1704 "
1705
1706 ARCH_EXT_LIST_X86_SIMD="
1707     aesni
1708     amd3dnow
1709     amd3dnowext
1710     avx
1711     avx2
1712     fma3
1713     fma4
1714     mmx
1715     mmxext
1716     sse
1717     sse2
1718     sse3
1719     sse4
1720     sse42
1721     ssse3
1722     xop
1723 "
1724
1725 ARCH_EXT_LIST_PPC="
1726     altivec
1727     dcbzl
1728     ldbrx
1729     power8
1730     ppc4xx
1731     vsx
1732 "
1733
1734 ARCH_EXT_LIST_X86="
1735     $ARCH_EXT_LIST_X86_SIMD
1736     cpunop
1737     i686
1738 "
1739
1740 ARCH_EXT_LIST="
1741     $ARCH_EXT_LIST_ARM
1742     $ARCH_EXT_LIST_PPC
1743     $ARCH_EXT_LIST_X86
1744     $ARCH_EXT_LIST_MIPS
1745     $ARCH_EXT_LIST_LOONGSON
1746 "
1747
1748 ARCH_FEATURES="
1749     aligned_stack
1750     fast_64bit
1751     fast_clz
1752     fast_cmov
1753     local_aligned_8
1754     local_aligned_16
1755     local_aligned_32
1756     simd_align_16
1757 "
1758
1759 BUILTIN_LIST="
1760     atomic_cas_ptr
1761     atomic_compare_exchange
1762     machine_rw_barrier
1763     MemoryBarrier
1764     mm_empty
1765     rdtsc
1766     sarestart
1767     sem_timedwait
1768     sync_val_compare_and_swap
1769 "
1770 HAVE_LIST_CMDLINE="
1771     inline_asm
1772     symver
1773     yasm
1774 "
1775
1776 HAVE_LIST_PUB="
1777     bigendian
1778     fast_unaligned
1779     incompatible_libav_abi
1780 "
1781
1782 HEADERS_LIST="
1783     alsa_asoundlib_h
1784     altivec_h
1785     arpa_inet_h
1786     asm_types_h
1787     cdio_paranoia_h
1788     cdio_paranoia_paranoia_h
1789     dispatch_dispatch_h
1790     dev_bktr_ioctl_bt848_h
1791     dev_bktr_ioctl_meteor_h
1792     dev_ic_bt8xx_h
1793     dev_video_bktr_ioctl_bt848_h
1794     dev_video_meteor_ioctl_meteor_h
1795     direct_h
1796     dirent_h
1797     dlfcn_h
1798     d3d11_h
1799     dxva_h
1800     ES2_gl_h
1801     gsm_h
1802     io_h
1803     mach_mach_time_h
1804     machine_ioctl_bt848_h
1805     machine_ioctl_meteor_h
1806     malloc_h
1807     opencv2_core_core_c_h
1808     openjpeg_2_1_openjpeg_h
1809     openjpeg_2_0_openjpeg_h
1810     openjpeg_1_5_openjpeg_h
1811     OpenGL_gl3_h
1812     poll_h
1813     sndio_h
1814     soundcard_h
1815     sys_mman_h
1816     sys_param_h
1817     sys_resource_h
1818     sys_select_h
1819     sys_soundcard_h
1820     sys_time_h
1821     sys_un_h
1822     sys_videoio_h
1823     termios_h
1824     udplite_h
1825     unistd_h
1826     valgrind_valgrind_h
1827     windows_h
1828     winsock2_h
1829 "
1830
1831 INTRINSICS_LIST="
1832     intrinsics_neon
1833 "
1834
1835 COMPLEX_FUNCS="
1836     cabs
1837     cexp
1838 "
1839
1840 MATH_FUNCS="
1841     atanf
1842     atan2f
1843     cbrt
1844     cbrtf
1845     copysign
1846     cosf
1847     erf
1848     exp2
1849     exp2f
1850     expf
1851     hypot
1852     isfinite
1853     isinf
1854     isnan
1855     ldexpf
1856     llrint
1857     llrintf
1858     log2
1859     log2f
1860     log10f
1861     lrint
1862     lrintf
1863     powf
1864     rint
1865     round
1866     roundf
1867     sinf
1868     trunc
1869     truncf
1870 "
1871
1872 SYSTEM_FUNCS="
1873     access
1874     aligned_malloc
1875     arc4random
1876     clock_gettime
1877     closesocket
1878     CommandLineToArgvW
1879     CoTaskMemFree
1880     CryptGenRandom
1881     dlopen
1882     fcntl
1883     flt_lim
1884     fork
1885     getaddrinfo
1886     gethrtime
1887     getopt
1888     GetProcessAffinityMask
1889     GetProcessMemoryInfo
1890     GetProcessTimes
1891     getrusage
1892     GetSystemTimeAsFileTime
1893     gettimeofday
1894     glob
1895     glXGetProcAddress
1896     gmtime_r
1897     inet_aton
1898     isatty
1899     jack_port_get_latency_range
1900     kbhit
1901     localtime_r
1902     lstat
1903     lzo1x_999_compress
1904     mach_absolute_time
1905     MapViewOfFile
1906     memalign
1907     mkstemp
1908     mmap
1909     mprotect
1910     nanosleep
1911     PeekNamedPipe
1912     posix_memalign
1913     pthread_cancel
1914     sched_getaffinity
1915     SetConsoleTextAttribute
1916     SetConsoleCtrlHandler
1917     setmode
1918     setrlimit
1919     Sleep
1920     strerror_r
1921     sysconf
1922     sysctl
1923     usleep
1924     UTGetOSTypeFromString
1925     VirtualAlloc
1926     wglGetProcAddress
1927 "
1928
1929 TOOLCHAIN_FEATURES="
1930     as_dn_directive
1931     as_func
1932     as_object_arch
1933     asm_mod_q
1934     attribute_may_alias
1935     attribute_packed
1936     ebp_available
1937     ebx_available
1938     gnu_as
1939     gnu_windres
1940     ibm_asm
1941     inline_asm_direct_symbol_refs
1942     inline_asm_labels
1943     inline_asm_nonlocal_labels
1944     pragma_deprecated
1945     rsync_contimeout
1946     symver_asm_label
1947     symver_gnu_asm
1948     vfp_args
1949     xform_asm
1950     xmm_clobbers
1951 "
1952
1953 TYPES_LIST="
1954     CONDITION_VARIABLE_Ptr
1955     socklen_t
1956     struct_addrinfo
1957     struct_group_source_req
1958     struct_ip_mreq_source
1959     struct_ipv6_mreq
1960     struct_msghdr_msg_flags
1961     struct_pollfd
1962     struct_rusage_ru_maxrss
1963     struct_sctp_event_subscribe
1964     struct_sockaddr_in6
1965     struct_sockaddr_sa_len
1966     struct_sockaddr_storage
1967     struct_stat_st_mtim_tv_nsec
1968     struct_v4l2_frmivalenum_discrete
1969 "
1970
1971 HAVE_LIST="
1972     $ARCH_EXT_LIST
1973     $(add_suffix _external $ARCH_EXT_LIST)
1974     $(add_suffix _inline   $ARCH_EXT_LIST)
1975     $ARCH_FEATURES
1976     $ATOMICS_LIST
1977     $BUILTIN_LIST
1978     $COMPLEX_FUNCS
1979     $HAVE_LIST_CMDLINE
1980     $HAVE_LIST_PUB
1981     $HEADERS_LIST
1982     $INTRINSICS_LIST
1983     $MATH_FUNCS
1984     $SYSTEM_FUNCS
1985     $THREADS_LIST
1986     $TOOLCHAIN_FEATURES
1987     $TYPES_LIST
1988     atomics_native
1989     dos_paths
1990     dxva2_lib
1991     dxva2api_cobj
1992     libc_msvcrt
1993     libdc1394_1
1994     libdc1394_2
1995     makeinfo
1996     makeinfo_html
1997     perl
1998     pod2man
1999     sdl
2000     section_data_rel_ro
2001     texi2html
2002     threads
2003     vaapi_x11
2004     vdpau_x11
2005     winrt
2006     xlib
2007 "
2008
2009 # options emitted with CONFIG_ prefix but not available on the command line
2010 CONFIG_EXTRA="
2011     aandcttables
2012     ac3dsp
2013     audio_frame_queue
2014     audiodsp
2015     blockdsp
2016     bswapdsp
2017     cabac
2018     dirac_parse
2019     dvprofile
2020     exif
2021     faandct
2022     faanidct
2023     fdctdsp
2024     flacdsp
2025     fmtconvert
2026     frame_thread_encoder
2027     g722dsp
2028     golomb
2029     gplv3
2030     h263dsp
2031     h264chroma
2032     h264dsp
2033     h264pred
2034     h264qpel
2035     hpeldsp
2036     huffman
2037     huffyuvdsp
2038     huffyuvencdsp
2039     idctdsp
2040     iirfilter
2041     imdct15
2042     intrax8
2043     iso_media
2044     ividsp
2045     jpegtables
2046     lgplv3
2047     libx262
2048     llauddsp
2049     llviddsp
2050     lpc
2051     lzf
2052     me_cmp
2053     mpeg_er
2054     mpegaudio
2055     mpegaudiodsp
2056     mpegvideo
2057     mpegvideoenc
2058     mss34dsp
2059     pixblockdsp
2060     qpeldsp
2061     qsv
2062     qsvdec
2063     qsvenc
2064     rangecoder
2065     riffdec
2066     riffenc
2067     rtpdec
2068     rtpenc_chain
2069     rv34dsp
2070     sinewin
2071     snappy
2072     srtp
2073     startcode
2074     texturedsp
2075     texturedspenc
2076     tpeldsp
2077     vc1dsp
2078     videodsp
2079     vp3dsp
2080     vp56dsp
2081     vp8dsp
2082     wma_freqs
2083     wmv2dsp
2084 "
2085
2086 CMDLINE_SELECT="
2087     $ARCH_EXT_LIST
2088     $CONFIG_LIST
2089     $HAVE_LIST_CMDLINE
2090     $THREADS_LIST
2091     asm
2092     cross_compile
2093     debug
2094     extra_warnings
2095     logging
2096     lto
2097     optimizations
2098     rpath
2099     stripping
2100 "
2101
2102 PATHS_LIST="
2103     bindir
2104     datadir
2105     docdir
2106     incdir
2107     libdir
2108     mandir
2109     pkgconfigdir
2110     prefix
2111     shlibdir
2112     install_name_dir
2113 "
2114
2115 CMDLINE_SET="
2116     $PATHS_LIST
2117     ar
2118     arch
2119     as
2120     assert_level
2121     build_suffix
2122     cc
2123     objcc
2124     cpu
2125     cross_prefix
2126     custom_allocator
2127     cxx
2128     dep_cc
2129     doxygen
2130     env
2131     extra_version
2132     gas
2133     host_cc
2134     host_cflags
2135     host_ld
2136     host_ldflags
2137     host_libs
2138     host_os
2139     install
2140     ld
2141     ln_s
2142     logfile
2143     malloc_prefix
2144     nm
2145     optflags
2146     pkg_config
2147     pkg_config_flags
2148     progs_suffix
2149     random_seed
2150     ranlib
2151     samples
2152     strip
2153     sws_max_filter_size
2154     sysinclude
2155     sysroot
2156     target_exec
2157     target_os
2158     target_path
2159     target_samples
2160     tempprefix
2161     toolchain
2162     valgrind
2163     yasmexe
2164 "
2165
2166 CMDLINE_APPEND="
2167     extra_cflags
2168     extra_cxxflags
2169     extra_objcflags
2170     host_cppflags
2171 "
2172
2173 # code dependency declarations
2174
2175 # architecture extensions
2176
2177 armv5te_deps="arm"
2178 armv6_deps="arm"
2179 armv6t2_deps="arm"
2180 armv8_deps="aarch64"
2181 neon_deps_any="aarch64 arm"
2182 intrinsics_neon_deps="neon"
2183 vfp_deps_any="aarch64 arm"
2184 vfpv3_deps="vfp"
2185 setend_deps="arm"
2186
2187 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2188
2189 mipsfpu_deps="mips"
2190 mipsdsp_deps="mips"
2191 mipsdspr2_deps="mips"
2192 mips32r2_deps="mips"
2193 mips32r5_deps="mips"
2194 mips32r6_deps="mips"
2195 mips64r2_deps="mips"
2196 mips64r6_deps="mips"
2197 msa_deps="mipsfpu"
2198 mmi_deps="mips"
2199
2200 altivec_deps="ppc"
2201 dcbzl_deps="ppc"
2202 ldbrx_deps="ppc"
2203 ppc4xx_deps="ppc"
2204 vsx_deps="altivec"
2205 power8_deps="vsx"
2206
2207 cpunop_deps="i686"
2208 x86_64_select="i686"
2209 x86_64_suggest="fast_cmov"
2210
2211 amd3dnow_deps="mmx"
2212 amd3dnowext_deps="amd3dnow"
2213 i686_deps="x86"
2214 mmx_deps="x86"
2215 mmxext_deps="mmx"
2216 sse_deps="mmxext"
2217 sse2_deps="sse"
2218 sse3_deps="sse2"
2219 ssse3_deps="sse3"
2220 sse4_deps="ssse3"
2221 sse42_deps="sse4"
2222 aesni_deps="sse42"
2223 avx_deps="sse42"
2224 xop_deps="avx"
2225 fma3_deps="avx"
2226 fma4_deps="avx"
2227 avx2_deps="avx"
2228
2229 mmx_external_deps="yasm"
2230 mmx_inline_deps="inline_asm"
2231 mmx_suggest="mmx_external mmx_inline"
2232
2233 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2234     eval dep=\$${ext}_deps
2235     eval ${ext}_external_deps='"${dep}_external"'
2236     eval ${ext}_inline_deps='"${dep}_inline"'
2237     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2238 done
2239
2240 aligned_stack_if_any="aarch64 ppc x86"
2241 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2242 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2243 fast_unaligned_if_any="aarch64 ppc x86"
2244 simd_align_16_if_any="altivec neon sse"
2245
2246 # system capabilities
2247 symver_if_any="symver_asm_label symver_gnu_asm"
2248 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2249
2250 # threading support
2251 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2252 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2253 atomics_win32_if="MemoryBarrier"
2254 atomics_native_if_any="$ATOMICS_LIST"
2255 w32threads_deps="atomics_native"
2256 threads_if_any="$THREADS_LIST"
2257
2258 # subsystems
2259 dct_select="rdft"
2260 dirac_parse_select="golomb"
2261 error_resilience_select="me_cmp"
2262 faandct_deps="faan fdctdsp"
2263 faanidct_deps="faan idctdsp"
2264 h264dsp_select="startcode"
2265 frame_thread_encoder_deps="encoders threads"
2266 intrax8_select="blockdsp idctdsp"
2267 mdct_select="fft"
2268 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2269 mpeg_er_select="error_resilience"
2270 mpegaudio_select="mpegaudiodsp"
2271 mpegaudiodsp_select="dct"
2272 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2273 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2274 qsvdec_select="qsv"
2275 qsvenc_select="qsv"
2276 vc1dsp_select="h264chroma qpeldsp startcode"
2277 rdft_select="fft"
2278
2279 # decoders / encoders
2280 aac_decoder_select="imdct15 mdct sinewin"
2281 aac_fixed_decoder_select="mdct sinewin"
2282 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2283 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2284 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2285 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2286 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2287 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2288 adpcm_g722_decoder_select="g722dsp"
2289 adpcm_g722_encoder_select="g722dsp"
2290 aic_decoder_select="golomb idctdsp"
2291 alac_encoder_select="lpc"
2292 als_decoder_select="bswapdsp"
2293 amrnb_decoder_select="lsp"
2294 amrwb_decoder_select="lsp"
2295 amv_decoder_select="sp5x_decoder exif"
2296 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2297 ape_decoder_select="bswapdsp llauddsp"
2298 apng_decoder_select="zlib"
2299 apng_encoder_select="huffyuvencdsp zlib"
2300 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2301 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2302 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2303 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2304 atrac1_decoder_select="mdct sinewin"
2305 atrac3_decoder_select="mdct"
2306 atrac3p_decoder_select="mdct sinewin"
2307 avrn_decoder_select="exif jpegtables"
2308 bink_decoder_select="blockdsp hpeldsp"
2309 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2310 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2311 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2312 cllc_decoder_select="bswapdsp"
2313 comfortnoise_encoder_select="lpc"
2314 cook_decoder_select="audiodsp mdct sinewin"
2315 cscd_decoder_select="lzo"
2316 cscd_decoder_suggest="zlib"
2317 dca_decoder_select="mdct"
2318 dds_decoder_select="texturedsp"
2319 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2320 dnxhd_decoder_select="blockdsp idctdsp"
2321 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2322 dvvideo_decoder_select="dvprofile idctdsp"
2323 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2324 dxa_decoder_select="zlib"
2325 dxv_decoder_select="lzf texturedsp"
2326 eac3_decoder_select="ac3_decoder"
2327 eac3_encoder_select="ac3_encoder"
2328 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2329 eatgq_decoder_select="aandcttables"
2330 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2331 exr_decoder_select="zlib"
2332 ffv1_decoder_select="golomb rangecoder"
2333 ffv1_encoder_select="rangecoder"
2334 ffvhuff_decoder_select="huffyuv_decoder"
2335 ffvhuff_encoder_select="huffyuv_encoder"
2336 fic_decoder_select="golomb"
2337 flac_decoder_select="flacdsp golomb"
2338 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2339 flashsv2_decoder_select="zlib"
2340 flashsv2_encoder_select="zlib"
2341 flashsv_decoder_select="zlib"
2342 flashsv_encoder_select="zlib"
2343 flv_decoder_select="h263_decoder"
2344 flv_encoder_select="h263_encoder"
2345 fourxm_decoder_select="blockdsp bswapdsp"
2346 fraps_decoder_select="bswapdsp huffman"
2347 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2348 g729_decoder_select="audiodsp"
2349 h261_decoder_select="mpegvideo"
2350 h261_encoder_select="aandcttables mpegvideoenc"
2351 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2352 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2353 h263i_decoder_select="h263_decoder"
2354 h263p_decoder_select="h263_decoder"
2355 h263p_encoder_select="h263_encoder"
2356 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2357 h264_decoder_suggest="error_resilience"
2358 h264_qsv_decoder_deps="libmfx"
2359 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2360 h264_qsv_encoder_deps="libmfx"
2361 h264_qsv_encoder_select="qsvenc"
2362 hap_decoder_select="snappy texturedsp"
2363 hap_encoder_deps="libsnappy"
2364 hap_encoder_select="texturedspenc"
2365 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2366 hevc_qsv_decoder_deps="libmfx"
2367 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2368 hevc_qsv_encoder_deps="libmfx"
2369 hevc_qsv_encoder_select="qsvenc"
2370 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2371 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2372 iac_decoder_select="imc_decoder"
2373 imc_decoder_select="bswapdsp fft mdct sinewin"
2374 indeo3_decoder_select="hpeldsp"
2375 indeo4_decoder_select="ividsp"
2376 indeo5_decoder_select="ividsp"
2377 interplay_video_decoder_select="hpeldsp"
2378 jpegls_decoder_select="golomb mjpeg_decoder"
2379 jpegls_encoder_select="golomb"
2380 jv_decoder_select="blockdsp"
2381 lagarith_decoder_select="huffyuvdsp"
2382 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2383 loco_decoder_select="golomb"
2384 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2385 metasound_decoder_select="lsp mdct sinewin"
2386 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2387 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2388 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2389 mjpegb_decoder_select="mjpeg_decoder"
2390 mlp_decoder_select="mlp_parser"
2391 motionpixels_decoder_select="bswapdsp"
2392 mp1_decoder_select="mpegaudio"
2393 mp1float_decoder_select="mpegaudio"
2394 mp2_decoder_select="mpegaudio"
2395 mp2float_decoder_select="mpegaudio"
2396 mp3_decoder_select="mpegaudio"
2397 mp3adu_decoder_select="mpegaudio"
2398 mp3adufloat_decoder_select="mpegaudio"
2399 mp3float_decoder_select="mpegaudio"
2400 mp3on4_decoder_select="mpegaudio"
2401 mp3on4float_decoder_select="mpegaudio"
2402 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2403 mpc8_decoder_select="mpegaudiodsp"
2404 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2405 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2406 mpegvideo_decoder_select="mpegvideo"
2407 mpeg1video_decoder_select="mpegvideo"
2408 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2409 mpeg2video_decoder_select="mpegvideo"
2410 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2411 mpeg2_qsv_decoder_deps="libmfx"
2412 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2413 mpeg2_qsv_encoder_deps="libmfx"
2414 mpeg2_qsv_encoder_select="qsvenc"
2415 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2416 mpeg4_encoder_select="h263_encoder"
2417 msa1_decoder_select="mss34dsp"
2418 msmpeg4v1_decoder_select="h263_decoder"
2419 msmpeg4v2_decoder_select="h263_decoder"
2420 msmpeg4v2_encoder_select="h263_encoder"
2421 msmpeg4v3_decoder_select="h263_decoder"
2422 msmpeg4v3_encoder_select="h263_encoder"
2423 mss2_decoder_select="vc1_decoder mpegvideo"
2424 mts2_decoder_select="mss34dsp"
2425 mxpeg_decoder_select="mjpeg_decoder"
2426 nellymoser_decoder_select="mdct sinewin"
2427 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2428 nuv_decoder_select="idctdsp lzo"
2429 on2avc_decoder_select="mdct"
2430 opus_decoder_deps="swresample"
2431 opus_decoder_select="imdct15"
2432 png_decoder_select="zlib"
2433 png_encoder_select="huffyuvencdsp zlib"
2434 prores_decoder_select="blockdsp idctdsp"
2435 prores_encoder_select="fdctdsp"
2436 qcelp_decoder_select="lsp"
2437 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2438 ra_144_decoder_select="audiodsp"
2439 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2440 ralf_decoder_select="golomb"
2441 rawvideo_decoder_select="bswapdsp"
2442 rscc_decoder_select="zlib"
2443 rtjpeg_decoder_select="me_cmp"
2444 rv10_decoder_select="h263_decoder"
2445 rv10_encoder_select="h263_encoder"
2446 rv20_decoder_select="h263_decoder"
2447 rv20_encoder_select="h263_encoder"
2448 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2449 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2450 screenpresso_decoder_select="zlib"
2451 shorten_decoder_select="golomb"
2452 sipr_decoder_select="lsp"
2453 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2454 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2455 sonic_decoder_select="golomb rangecoder"
2456 sonic_encoder_select="golomb rangecoder"
2457 sonic_ls_encoder_select="golomb rangecoder"
2458 sp5x_decoder_select="mjpeg_decoder"
2459 svq1_decoder_select="hpeldsp"
2460 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2461 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2462 svq3_decoder_suggest="zlib"
2463 tak_decoder_select="audiodsp"
2464 tdsc_decoder_select="zlib mjpeg_decoder"
2465 theora_decoder_select="vp3_decoder"
2466 thp_decoder_select="mjpeg_decoder"
2467 tiff_decoder_suggest="zlib lzma"
2468 tiff_encoder_suggest="zlib"
2469 truehd_decoder_select="mlp_parser"
2470 truemotion2_decoder_select="bswapdsp"
2471 truespeech_decoder_select="bswapdsp"
2472 tscc_decoder_select="zlib"
2473 twinvq_decoder_select="mdct lsp sinewin"
2474 txd_decoder_select="texturedsp"
2475 utvideo_decoder_select="bswapdsp"
2476 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2477 vble_decoder_select="huffyuvdsp"
2478 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2479 vc1_qsv_decoder_deps="libmfx"
2480 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2481 vc1image_decoder_select="vc1_decoder"
2482 vorbis_decoder_select="mdct"
2483 vorbis_encoder_select="mdct"
2484 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2485 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2486 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2487 vp6a_decoder_select="vp6_decoder"
2488 vp6f_decoder_select="vp6_decoder"
2489 vp7_decoder_select="h264pred videodsp vp8dsp"
2490 vp8_decoder_select="h264pred videodsp vp8dsp"
2491 vp9_decoder_select="videodsp vp9_parser"
2492 webp_decoder_select="vp8_decoder exif"
2493 wmalossless_decoder_select="llauddsp"
2494 wmapro_decoder_select="mdct sinewin wma_freqs"
2495 wmav1_decoder_select="mdct sinewin wma_freqs"
2496 wmav1_encoder_select="mdct sinewin wma_freqs"
2497 wmav2_decoder_select="mdct sinewin wma_freqs"
2498 wmav2_encoder_select="mdct sinewin wma_freqs"
2499 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2500 wmv1_decoder_select="h263_decoder"
2501 wmv1_encoder_select="h263_encoder"
2502 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2503 wmv2_encoder_select="h263_encoder wmv2dsp"
2504 wmv3_decoder_select="vc1_decoder"
2505 wmv3image_decoder_select="wmv3_decoder"
2506 xma1_decoder_select="wmapro_decoder"
2507 xma2_decoder_select="wmapro_decoder"
2508 zerocodec_decoder_select="zlib"
2509 zlib_decoder_select="zlib"
2510 zlib_encoder_select="zlib"
2511 zmbv_decoder_select="zlib"
2512 zmbv_encoder_select="zlib"
2513
2514 # platform codecs
2515 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2516 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2517
2518 # hardware accelerators
2519 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2520 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2521 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2522 vaapi_deps="va_va_h"
2523 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2524 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2525 vda_deps="vda_framework pthreads"
2526 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2527 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2528 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2529 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2530 xvmc_deps="X11_extensions_XvMClib_h"
2531
2532 h263_vaapi_hwaccel_deps="vaapi"
2533 h263_vaapi_hwaccel_select="h263_decoder"
2534 h263_videotoolbox_hwaccel_deps="videotoolbox"
2535 h263_videotoolbox_hwaccel_select="h263_decoder"
2536 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2537 h264_d3d11va_hwaccel_deps="d3d11va"
2538 h264_d3d11va_hwaccel_select="h264_decoder"
2539 h264_dxva2_hwaccel_deps="dxva2"
2540 h264_dxva2_hwaccel_select="h264_decoder"
2541 h264_mediacodec_decoder_deps="mediacodec"
2542 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2543 h264_mmal_decoder_deps="mmal"
2544 h264_mmal_decoder_select="mmal"
2545 h264_mmal_hwaccel_deps="mmal"
2546 h264_qsv_hwaccel_deps="libmfx"
2547 h264_vaapi_hwaccel_deps="vaapi"
2548 h264_vaapi_hwaccel_select="h264_decoder"
2549 h264_vda_decoder_deps="vda"
2550 h264_vda_decoder_select="h264_decoder"
2551 h264_vda_hwaccel_deps="vda"
2552 h264_vda_hwaccel_select="h264_decoder"
2553 h264_vda_old_hwaccel_deps="vda"
2554 h264_vda_old_hwaccel_select="h264_decoder"
2555 h264_vdpau_decoder_deps="vdpau"
2556 h264_vdpau_decoder_select="h264_decoder"
2557 h264_vdpau_hwaccel_deps="vdpau"
2558 h264_vdpau_hwaccel_select="h264_decoder"
2559 h264_videotoolbox_hwaccel_deps="videotoolbox"
2560 h264_videotoolbox_hwaccel_select="h264_decoder"
2561 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2562 hevc_d3d11va_hwaccel_select="hevc_decoder"
2563 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2564 hevc_dxva2_hwaccel_select="hevc_decoder"
2565 hevc_qsv_hwaccel_deps="libmfx"
2566 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2567 hevc_vaapi_hwaccel_select="hevc_decoder"
2568 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2569 hevc_vdpau_hwaccel_select="hevc_decoder"
2570 mpeg_vdpau_decoder_deps="vdpau"
2571 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2572 mpeg_xvmc_hwaccel_deps="xvmc"
2573 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2574 mpeg1_vdpau_decoder_deps="vdpau"
2575 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2576 mpeg1_vdpau_hwaccel_deps="vdpau"
2577 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2578 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2579 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2580 mpeg1_xvmc_hwaccel_deps="xvmc"
2581 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2582 mpeg2_crystalhd_decoder_select="crystalhd"
2583 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2584 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2585 mpeg2_dxva2_hwaccel_deps="dxva2"
2586 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2587 mpeg2_mmal_decoder_deps="mmal"
2588 mpeg2_mmal_decoder_select="mmal"
2589 mpeg2_mmal_hwaccel_deps="mmal"
2590 mpeg2_qsv_hwaccel_deps="libmfx"
2591 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2592 mpeg2_vaapi_hwaccel_deps="vaapi"
2593 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2594 mpeg2_vdpau_hwaccel_deps="vdpau"
2595 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2596 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2597 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2598 mpeg2_xvmc_hwaccel_deps="xvmc"
2599 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2600 mpeg4_crystalhd_decoder_select="crystalhd"
2601 mpeg4_mmal_decoder_deps="mmal"
2602 mpeg4_mmal_decoder_select="mmal"
2603 mpeg4_mmal_hwaccel_deps="mmal"
2604 mpeg4_vaapi_hwaccel_deps="vaapi"
2605 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2606 mpeg4_vdpau_decoder_deps="vdpau"
2607 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2608 mpeg4_vdpau_hwaccel_deps="vdpau"
2609 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2610 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2611 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2612 msmpeg4_crystalhd_decoder_select="crystalhd"
2613 vc1_crystalhd_decoder_select="crystalhd"
2614 vc1_d3d11va_hwaccel_deps="d3d11va"
2615 vc1_d3d11va_hwaccel_select="vc1_decoder"
2616 vc1_dxva2_hwaccel_deps="dxva2"
2617 vc1_dxva2_hwaccel_select="vc1_decoder"
2618 vc1_mmal_decoder_deps="mmal"
2619 vc1_mmal_decoder_select="mmal"
2620 vc1_mmal_hwaccel_deps="mmal"
2621 vc1_qsv_hwaccel_deps="libmfx"
2622 vc1_qsv_hwaccel_select="qsvdec_vc1"
2623 vc1_vaapi_hwaccel_deps="vaapi"
2624 vc1_vaapi_hwaccel_select="vc1_decoder"
2625 vc1_vdpau_decoder_deps="vdpau"
2626 vc1_vdpau_decoder_select="vc1_decoder"
2627 vc1_vdpau_hwaccel_deps="vdpau"
2628 vc1_vdpau_hwaccel_select="vc1_decoder"
2629 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2630 vp9_d3d11va_hwaccel_select="vp9_decoder"
2631 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2632 vp9_dxva2_hwaccel_select="vp9_decoder"
2633 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2634 vp9_vaapi_hwaccel_select="vp9_decoder"
2635 wmv3_crystalhd_decoder_select="crystalhd"
2636 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2637 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2638 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2639 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2640 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2641
2642 # parsers
2643 h264_parser_select="h264_decoder"
2644 hevc_parser_select="golomb"
2645 mpegvideo_parser_select="mpegvideo"
2646 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2647 vc1_parser_select="vc1dsp"
2648
2649 # bitstream_filters
2650 mjpeg2jpeg_bsf_select="jpegtables"
2651
2652 # external libraries
2653 aac_at_decoder_deps="audiotoolbox"
2654 ac3_at_decoder_deps="audiotoolbox"
2655 ac3_at_decoder_select="ac3_parser"
2656 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2657 alac_at_decoder_deps="audiotoolbox"
2658 amr_nb_at_decoder_deps="audiotoolbox"
2659 eac3_at_decoder_deps="audiotoolbox"
2660 eac3_at_decoder_select="ac3_parser"
2661 gsm_ms_at_decoder_deps="audiotoolbox"
2662 ilbc_at_decoder_deps="audiotoolbox"
2663 mp1_at_decoder_deps="audiotoolbox"
2664 mp2_at_decoder_deps="audiotoolbox"
2665 mp3_at_decoder_deps="audiotoolbox"
2666 pcm_alaw_at_decoder_deps="audiotoolbox"
2667 pcm_mulaw_at_decoder_deps="audiotoolbox"
2668 qdmc_at_decoder_deps="audiotoolbox"
2669 qdm2_at_decoder_deps="audiotoolbox"
2670 aac_at_encoder_deps="audiotoolbox"
2671 aac_at_encoder_select="audio_frame_queue"
2672 alac_at_encoder_deps="audiotoolbox"
2673 alac_at_encoder_select="audio_frame_queue"
2674 ilbc_at_encoder_deps="audiotoolbox"
2675 ilbc_at_encoder_select="audio_frame_queue"
2676 pcm_alaw_at_encoder_deps="audiotoolbox"
2677 pcm_alaw_at_encoder_select="audio_frame_queue"
2678 pcm_mulaw_at_encoder_deps="audiotoolbox"
2679 pcm_mulaw_at_encoder_select="audio_frame_queue"
2680 chromaprint_muxer_deps="chromaprint"
2681 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2682 libcelt_decoder_deps="libcelt"
2683 libfaac_encoder_deps="libfaac"
2684 libfaac_encoder_select="audio_frame_queue"
2685 libfdk_aac_decoder_deps="libfdk_aac"
2686 libfdk_aac_encoder_deps="libfdk_aac"
2687 libfdk_aac_encoder_select="audio_frame_queue"
2688 libgme_demuxer_deps="libgme"
2689 libgsm_decoder_deps="libgsm"
2690 libgsm_encoder_deps="libgsm"
2691 libgsm_ms_decoder_deps="libgsm"
2692 libgsm_ms_encoder_deps="libgsm"
2693 libilbc_decoder_deps="libilbc"
2694 libilbc_encoder_deps="libilbc"
2695 libkvazaar_encoder_deps="libkvazaar"
2696 libmodplug_demuxer_deps="libmodplug"
2697 libmp3lame_encoder_deps="libmp3lame"
2698 libmp3lame_encoder_select="audio_frame_queue"
2699 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2700 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2701 libopencore_amrnb_encoder_select="audio_frame_queue"
2702 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2703 libopenh264_encoder_deps="libopenh264"
2704 libopenjpeg_decoder_deps="libopenjpeg"
2705 libopenjpeg_encoder_deps="libopenjpeg"
2706 libopus_decoder_deps="libopus"
2707 libopus_encoder_deps="libopus"
2708 libopus_encoder_select="audio_frame_queue"
2709 libschroedinger_decoder_deps="libschroedinger"
2710 libschroedinger_encoder_deps="libschroedinger"
2711 libshine_encoder_deps="libshine"
2712 libshine_encoder_select="audio_frame_queue"
2713 libspeex_decoder_deps="libspeex"
2714 libspeex_encoder_deps="libspeex"
2715 libspeex_encoder_select="audio_frame_queue"
2716 libtheora_encoder_deps="libtheora"
2717 libtwolame_encoder_deps="libtwolame"
2718 libutvideo_decoder_deps="libutvideo"
2719 libutvideo_encoder_deps="libutvideo"
2720 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2721 libvorbis_decoder_deps="libvorbis"
2722 libvorbis_encoder_deps="libvorbis"
2723 libvorbis_encoder_select="audio_frame_queue"
2724 libvpx_vp8_decoder_deps="libvpx"
2725 libvpx_vp8_encoder_deps="libvpx"
2726 libvpx_vp9_decoder_deps="libvpx"
2727 libvpx_vp9_encoder_deps="libvpx"
2728 libwavpack_encoder_deps="libwavpack"
2729 libwebp_encoder_deps="libwebp"
2730 libwebp_anim_encoder_deps="libwebp"
2731 libx262_encoder_deps="libx262"
2732 libx264_encoder_deps="libx264"
2733 libx264rgb_encoder_deps="libx264"
2734 libx264rgb_encoder_select="libx264_encoder"
2735 libx265_encoder_deps="libx265"
2736 libxavs_encoder_deps="libxavs"
2737 libxvid_encoder_deps="libxvid"
2738 libzvbi_teletext_decoder_deps="libzvbi"
2739 nvenc_encoder_deps="nvenc"
2740 nvenc_h264_encoder_deps="nvenc"
2741 nvenc_hevc_encoder_deps="nvenc"
2742 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2743 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2744 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2745 videotoolbox_encoder_suggest="vda_framework"
2746
2747 # demuxers / muxers
2748 ac3_demuxer_select="ac3_parser"
2749 asf_demuxer_select="riffdec"
2750 asf_o_demuxer_select="riffdec"
2751 asf_muxer_select="riffenc"
2752 asf_stream_muxer_select="asf_muxer"
2753 avi_demuxer_select="iso_media riffdec exif"
2754 avi_muxer_select="riffenc"
2755 avisynth_demuxer_deps="avisynth"
2756 avisynth_demuxer_select="riffdec"
2757 caf_demuxer_select="iso_media riffdec"
2758 dash_muxer_select="mp4_muxer"
2759 dirac_demuxer_select="dirac_parser"
2760 dts_demuxer_select="dca_parser"
2761 dtshd_demuxer_select="dca_parser"
2762 dv_demuxer_select="dvprofile"
2763 dv_muxer_select="dvprofile"
2764 dxa_demuxer_select="riffdec"
2765 eac3_demuxer_select="ac3_parser"
2766 f4v_muxer_select="mov_muxer"
2767 flac_demuxer_select="flac_parser"
2768 hds_muxer_select="flv_muxer"
2769 hls_muxer_select="mpegts_muxer"
2770 image2_alias_pix_demuxer_select="image2_demuxer"
2771 image2_brender_pix_demuxer_select="image2_demuxer"
2772 ipod_muxer_select="mov_muxer"
2773 ismv_muxer_select="mov_muxer"
2774 libnut_demuxer_deps="libnut"
2775 libnut_muxer_deps="libnut"
2776 matroska_audio_muxer_select="matroska_muxer"
2777 matroska_demuxer_select="iso_media riffdec"
2778 matroska_demuxer_suggest="bzlib lzo zlib"
2779 matroska_muxer_select="iso_media riffenc"
2780 mmf_muxer_select="riffenc"
2781 mov_demuxer_select="iso_media riffdec"
2782 mov_demuxer_suggest="zlib"
2783 mov_muxer_select="iso_media riffenc rtpenc_chain"
2784 mp3_demuxer_select="mpegaudio_parser"
2785 mp4_muxer_select="mov_muxer"
2786 mpegts_demuxer_select="iso_media"
2787 mpegts_muxer_select="adts_muxer latm_muxer"
2788 mpegtsraw_demuxer_select="mpegts_demuxer"
2789 mxf_d10_muxer_select="mxf_muxer"
2790 mxf_opatom_muxer_select="mxf_muxer"
2791 nut_muxer_select="riffenc"
2792 nuv_demuxer_select="riffdec"
2793 oga_muxer_select="ogg_muxer"
2794 ogg_demuxer_select="dirac_parse"
2795 opus_muxer_select="ogg_muxer"
2796 psp_muxer_select="mov_muxer"
2797 rtp_demuxer_select="sdp_demuxer"
2798 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2799 rtsp_demuxer_select="http_protocol rtpdec"
2800 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2801 sap_demuxer_select="sdp_demuxer"
2802 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2803 sdp_demuxer_select="rtpdec"
2804 smoothstreaming_muxer_select="ismv_muxer"
2805 spdif_muxer_select="aac_parser"
2806 spx_muxer_select="ogg_muxer"
2807 swf_demuxer_suggest="zlib"
2808 tak_demuxer_select="tak_parser"
2809 tg2_muxer_select="mov_muxer"
2810 tgp_muxer_select="mov_muxer"
2811 vobsub_demuxer_select="mpegps_demuxer"
2812 w64_demuxer_select="wav_demuxer"
2813 w64_muxer_select="wav_muxer"
2814 wav_demuxer_select="riffdec"
2815 wav_muxer_select="riffenc"
2816 webm_muxer_select="iso_media riffenc"
2817 webm_dash_manifest_demuxer_select="matroska_demuxer"
2818 wtv_demuxer_select="mpegts_demuxer riffdec"
2819 wtv_muxer_select="mpegts_muxer riffenc"
2820 xmv_demuxer_select="riffdec"
2821 xwma_demuxer_select="riffdec"
2822
2823 # indevs / outdevs
2824 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2825 alsa_outdev_deps="alsa_asoundlib_h"
2826 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2827 avfoundation_indev_select="avfoundation"
2828 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2829 caca_outdev_deps="libcaca"
2830 decklink_indev_deps="decklink pthreads"
2831 decklink_indev_extralibs="-lstdc++"
2832 decklink_outdev_deps="decklink pthreads"
2833 decklink_outdev_extralibs="-lstdc++"
2834 dshow_indev_deps="IBaseFilter"
2835 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2836 dv1394_indev_deps="dv1394"
2837 dv1394_indev_select="dv_demuxer"
2838 fbdev_indev_deps="linux_fb_h"
2839 fbdev_outdev_deps="linux_fb_h"
2840 gdigrab_indev_deps="CreateDIBSection"
2841 gdigrab_indev_extralibs="-lgdi32"
2842 gdigrab_indev_select="bmp_decoder"
2843 iec61883_indev_deps="libiec61883"
2844 jack_indev_deps="jack_jack_h"
2845 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2846 lavfi_indev_deps="avfilter"
2847 libcdio_indev_deps="libcdio"
2848 libdc1394_indev_deps="libdc1394"
2849 libv4l2_indev_deps="libv4l2"
2850 openal_indev_deps="openal"
2851 opengl_outdev_deps="opengl"
2852 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2853 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2854 pulse_indev_deps="libpulse"
2855 pulse_outdev_deps="libpulse"
2856 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2857 qtkit_indev_select="qtkit"
2858 sdl_outdev_deps="sdl"
2859 sndio_indev_deps="sndio_h"
2860 sndio_outdev_deps="sndio_h"
2861 v4l_indev_deps="linux_videodev_h"
2862 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2863 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2864 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2865 vfwcap_indev_extralibs="-lavicap32"
2866 x11grab_indev_deps="x11grab"
2867 x11grab_xcb_indev_deps="libxcb"
2868 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2869 xv_outdev_extralibs="-lXv -lX11 -lXext"
2870
2871 # protocols
2872 async_protocol_deps="threads"
2873 bluray_protocol_deps="libbluray"
2874 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2875 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2876 ffrtmpcrypt_protocol_select="tcp_protocol"
2877 ffrtmphttp_protocol_deps="!librtmp_protocol"
2878 ffrtmphttp_protocol_select="http_protocol"
2879 ftp_protocol_select="tcp_protocol"
2880 gopher_protocol_select="network"
2881 http_protocol_select="tcp_protocol"
2882 httpproxy_protocol_select="tcp_protocol"
2883 https_protocol_select="tls_protocol"
2884 icecast_protocol_select="http_protocol"
2885 librtmp_protocol_deps="librtmp"
2886 librtmpe_protocol_deps="librtmp"
2887 librtmps_protocol_deps="librtmp"
2888 librtmpt_protocol_deps="librtmp"
2889 librtmpte_protocol_deps="librtmp"
2890 libsmbclient_protocol_deps="libsmbclient gplv3"
2891 libssh_protocol_deps="libssh"
2892 mmsh_protocol_select="http_protocol"
2893 mmst_protocol_select="network"
2894 rtmp_protocol_deps="!librtmp_protocol"
2895 rtmp_protocol_select="tcp_protocol"
2896 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2897 rtmps_protocol_deps="!librtmp_protocol"
2898 rtmps_protocol_select="tls_protocol"
2899 rtmpt_protocol_select="ffrtmphttp_protocol"
2900 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2901 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2902 rtp_protocol_select="udp_protocol"
2903 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2904 sctp_protocol_select="network"
2905 srtp_protocol_select="rtp_protocol srtp"
2906 tcp_protocol_select="network"
2907 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2908 tls_gnutls_protocol_select="tcp_protocol"
2909 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2910 tls_openssl_protocol_select="tcp_protocol"
2911 tls_schannel_protocol_deps="schannel"
2912 tls_schannel_protocol_select="tcp_protocol"
2913 tls_securetransport_protocol_deps="securetransport"
2914 tls_securetransport_protocol_select="tcp_protocol"
2915 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2916 udp_protocol_select="network"
2917 udplite_protocol_select="network"
2918 unix_protocol_deps="sys_un_h"
2919 unix_protocol_select="network"
2920
2921 # filters
2922 afftfilt_filter_deps="avcodec"
2923 afftfilt_filter_select="fft"
2924 amovie_filter_deps="avcodec avformat"
2925 aresample_filter_deps="swresample"
2926 ass_filter_deps="libass"
2927 asyncts_filter_deps="avresample"
2928 atempo_filter_deps="avcodec"
2929 atempo_filter_select="rdft"
2930 azmq_filter_deps="libzmq"
2931 blackframe_filter_deps="gpl"
2932 boxblur_filter_deps="gpl"
2933 bs2b_filter_deps="libbs2b"
2934 colormatrix_filter_deps="gpl"
2935 cover_rect_filter_deps="avcodec avformat gpl"
2936 cropdetect_filter_deps="gpl"
2937 delogo_filter_deps="gpl"
2938 deshake_filter_select="pixelutils"
2939 drawtext_filter_deps="libfreetype"
2940 ebur128_filter_deps="gpl"
2941 eq_filter_deps="gpl"
2942 fftfilt_filter_deps="avcodec"
2943 fftfilt_filter_select="rdft"
2944 find_rect_filter_deps="avcodec avformat gpl"
2945 firequalizer_filter_deps="avcodec"
2946 firequalizer_filter_select="rdft"
2947 flite_filter_deps="libflite"
2948 framerate_filter_select="pixelutils"
2949 frei0r_filter_deps="frei0r dlopen"
2950 frei0r_src_filter_deps="frei0r dlopen"
2951 fspp_filter_deps="gpl"
2952 geq_filter_deps="gpl"
2953 histeq_filter_deps="gpl"
2954 hqdn3d_filter_deps="gpl"
2955 hwupload_cuda_filter_deps="cuda"
2956 interlace_filter_deps="gpl"
2957 kerndeint_filter_deps="gpl"
2958 ladspa_filter_deps="ladspa dlopen"
2959 mcdeint_filter_deps="avcodec gpl"
2960 movie_filter_deps="avcodec avformat"
2961 mpdecimate_filter_deps="gpl"
2962 mpdecimate_filter_select="pixelutils"
2963 mptestsrc_filter_deps="gpl"
2964 negate_filter_deps="lut_filter"
2965 nnedi_filter_deps="gpl"
2966 ocr_filter_deps="libtesseract"
2967 ocv_filter_deps="libopencv"
2968 owdenoise_filter_deps="gpl"
2969 pan_filter_deps="swresample"
2970 perspective_filter_deps="gpl"
2971 phase_filter_deps="gpl"
2972 pp7_filter_deps="gpl"
2973 pp_filter_deps="gpl postproc"
2974 pullup_filter_deps="gpl"
2975 removelogo_filter_deps="avcodec avformat swscale"
2976 repeatfields_filter_deps="gpl"
2977 resample_filter_deps="avresample"
2978 rubberband_filter_deps="librubberband"
2979 sab_filter_deps="gpl swscale"
2980 scale2ref_filter_deps="swscale"
2981 scale_filter_deps="swscale"
2982 select_filter_select="pixelutils"
2983 showcqt_filter_deps="avcodec avformat swscale"
2984 showcqt_filter_select="fft"
2985 showfreqs_filter_deps="avcodec"
2986 showfreqs_filter_select="fft"
2987 showspectrum_filter_deps="avcodec"
2988 showspectrum_filter_select="fft"
2989 showspectrumpic_filter_deps="avcodec"
2990 showspectrumpic_filter_select="fft"
2991 smartblur_filter_deps="gpl swscale"
2992 sofalizer_filter_deps="netcdf avcodec"
2993 sofalizer_filter_select="fft"
2994 spectrumsynth_filter_deps="avcodec"
2995 spectrumsynth_filter_select="fft"
2996 spp_filter_deps="gpl avcodec"
2997 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2998 stereo3d_filter_deps="gpl"
2999 subtitles_filter_deps="avformat avcodec libass"
3000 super2xsai_filter_deps="gpl"
3001 pixfmts_super2xsai_test_deps="super2xsai_filter"
3002 tinterlace_filter_deps="gpl"
3003 tinterlace_merge_test_deps="tinterlace_filter"
3004 tinterlace_pad_test_deps="tinterlace_filter"
3005 uspp_filter_deps="gpl avcodec"
3006 vidstabdetect_filter_deps="libvidstab"
3007 vidstabtransform_filter_deps="libvidstab"
3008 zmq_filter_deps="libzmq"
3009 zoompan_filter_deps="swscale"
3010 zscale_filter_deps="libzimg"
3011 scale_npp_filter_deps="cuda libnpp"
3012 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3013
3014 # examples
3015 avcodec_example_deps="avcodec avutil"
3016 avio_dir_cmd="avformat avutil"
3017 avio_reading="avformat avcodec avutil"
3018 decoding_encoding_example_deps="avcodec avformat avutil"
3019 demuxing_decoding_example_deps="avcodec avformat avutil"
3020 extract_mvs_example_deps="avcodec avformat avutil"
3021 filter_audio_example_deps="avfilter avutil"
3022 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3023 filtering_video_example_deps="avfilter avcodec avformat avutil"
3024 metadata_example_deps="avformat avutil"
3025 muxing_example_deps="avcodec avformat avutil swscale"
3026 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3027 remuxing_example_deps="avcodec avformat avutil"
3028 resampling_audio_example_deps="avutil swresample"
3029 scaling_video_example_deps="avutil swscale"
3030 transcode_aac_example_deps="avcodec avformat swresample"
3031 transcoding_example_deps="avfilter avcodec avformat avutil"
3032
3033 # libraries, in linking order
3034 avcodec_deps="avutil"
3035 avdevice_deps="avformat avcodec avutil"
3036 avfilter_deps="avutil"
3037 avformat_deps="avcodec avutil"
3038 avresample_deps="avutil"
3039 postproc_deps="avutil gpl"
3040 swresample_deps="avutil"
3041 swscale_deps="avutil"
3042
3043 # programs
3044 ffmpeg_deps="avcodec avfilter avformat swresample"
3045 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3046                null_filter
3047                setpts_filter trim_filter"
3048 ffplay_deps="avcodec avformat swscale swresample sdl"
3049 ffplay_libs='$sdl_libs'
3050 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3051 ffprobe_deps="avcodec avformat"
3052 ffserver_deps="avformat fork sarestart"
3053 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3054
3055 # documentation
3056 podpages_deps="perl"
3057 manpages_deps="perl pod2man"
3058 htmlpages_deps="perl"
3059 htmlpages_deps_any="makeinfo_html texi2html"
3060 txtpages_deps="perl makeinfo"
3061 doc_deps_any="manpages htmlpages podpages txtpages"
3062
3063 # default parameters
3064
3065 logfile="config.log"
3066
3067 # installation paths
3068 prefix_default="/usr/local"
3069 bindir_default='${prefix}/bin'
3070 datadir_default='${prefix}/share/ffmpeg'
3071 docdir_default='${prefix}/share/doc/ffmpeg'
3072 incdir_default='${prefix}/include'
3073 libdir_default='${prefix}/lib'
3074 mandir_default='${prefix}/share/man'
3075
3076 # toolchain
3077 ar_default="ar"
3078 cc_default="gcc"
3079 cxx_default="g++"
3080 host_cc_default="gcc"
3081 cp_f="cp -f"
3082 doxygen_default="doxygen"
3083 install="install"
3084 ln_s_default="ln -s -f"
3085 nm_default="nm -g"
3086 objformat="elf"
3087 pkg_config_default=pkg-config
3088 ranlib_default="ranlib"
3089 strip_default="strip"
3090 yasmexe_default="yasm"
3091 windres_default="windres"
3092
3093 # OS
3094 target_os_default=$(tolower $(uname -s))
3095 host_os=$target_os_default
3096
3097 # machine
3098 if test "$target_os_default" = aix; then
3099     arch_default=$(uname -p)
3100     strip_default="strip -X32_64"
3101 else
3102     arch_default=$(uname -m)
3103 fi
3104 cpu="generic"
3105 intrinsics="none"
3106
3107 # configurable options
3108 enable $PROGRAM_LIST
3109 enable $DOCUMENT_LIST
3110 enable $EXAMPLE_LIST
3111 enable $(filter_out avresample $LIBRARY_LIST)
3112 enable stripping
3113
3114 enable asm
3115 enable debug
3116 enable doc
3117 enable faan faandct faanidct
3118 enable optimizations
3119 enable runtime_cpudetect
3120 enable safe_bitstream_reader
3121 enable static
3122 enable swscale_alpha
3123 enable valgrind_backtrace
3124
3125 sws_max_filter_size_default=256
3126 set_default sws_max_filter_size
3127
3128 # Enable platform codecs by default.
3129 enable audiotoolbox
3130
3131 # Enable hwaccels by default.
3132 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3133 enable xlib
3134
3135 enable vda_framework videotoolbox videotoolbox_encoder
3136
3137 # build settings
3138 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3139 LIBPREF="lib"
3140 LIBSUF=".a"
3141 FULLNAME='$(NAME)$(BUILDSUF)'
3142 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3143 SLIBPREF="lib"
3144 SLIBSUF=".so"
3145 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3146 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3147 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3148 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3149 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3150 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3151
3152 asflags_filter=echo
3153 cflags_filter=echo
3154 ldflags_filter=echo
3155
3156 AS_C='-c'
3157 AS_O='-o $@'
3158 CC_C='-c'
3159 CC_E='-E -o $@'
3160 CC_O='-o $@'
3161 CXX_C='-c'
3162 CXX_O='-o $@'
3163 OBJCC_C='-c'
3164 OBJCC_E='-E -o $@'
3165 OBJCC_O='-o $@'
3166 LD_O='-o $@'
3167 LD_LIB='-l%'
3168 LD_PATH='-L'
3169 HOSTCC_C='-c'
3170 HOSTCC_E='-E -o $@'
3171 HOSTCC_O='-o $@'
3172 HOSTLD_O='-o $@'
3173
3174 host_libs='-lm'
3175 host_cflags_filter=echo
3176 host_ldflags_filter=echo
3177
3178 target_path='$(CURDIR)'
3179
3180 # since the object filename is not given with the -MM flag, the compiler
3181 # is only able to print the basename, and we must add the path ourselves
3182 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3183 DEPFLAGS='-MM'
3184
3185 # find source path
3186 if test -f configure; then
3187     source_path=.
3188 else
3189     source_path=$(cd $(dirname "$0"); pwd)
3190     case "$source_path" in
3191         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3192     esac
3193     test -e "$source_path/config.h" &&
3194         die "Out of tree builds are impossible with config.h in source dir."
3195 fi
3196
3197 for v in "$@"; do
3198     r=${v#*=}
3199     l=${v%"$r"}
3200     r=$(sh_quote "$r")
3201     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3202 done
3203
3204 find_things(){
3205     thing=$1
3206     pattern=$2
3207     file=$source_path/$3
3208     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3209 }
3210
3211 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3212 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3213 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3214 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3215 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3216 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3217 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3218 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3219 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3220
3221 find_things_extern(){
3222     thing=$1
3223     pattern=$2
3224     file=$source_path/$3
3225     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3226 }
3227
3228 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3229 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3230
3231 ALL_COMPONENTS="
3232     $BSF_LIST
3233     $DECODER_LIST
3234     $DEMUXER_LIST
3235     $ENCODER_LIST
3236     $FILTER_LIST
3237     $HWACCEL_LIST
3238     $INDEV_LIST
3239     $MUXER_LIST
3240     $OUTDEV_LIST
3241     $PARSER_LIST
3242     $PROTOCOL_LIST
3243 "
3244
3245 for n in $COMPONENT_LIST; do
3246     v=$(toupper ${n%s})_LIST
3247     eval enable \$$v
3248     eval ${n}_if_any="\$$v"
3249 done
3250
3251 enable $ARCH_EXT_LIST
3252
3253 die_unknown(){
3254     echo "Unknown option \"$1\"."
3255     echo "See $0 --help for available options."
3256     exit 1
3257 }
3258
3259 print_in_columns() {
3260     cols=$(expr $ncols / 24)
3261     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3262 }
3263
3264 show_list() {
3265     suffix=_$1
3266     shift
3267     echo $* | sed s/$suffix//g | print_in_columns
3268     exit 0
3269 }
3270
3271 rand_list(){
3272     IFS=', '
3273     set -- $*
3274     unset IFS
3275     for thing; do
3276         comp=${thing%:*}
3277         prob=${thing#$comp}
3278         prob=${prob#:}
3279         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3280         echo "prob ${prob:-0.5}"
3281         printf '%s\n' $comp
3282     done
3283 }
3284
3285 do_random(){
3286     action=$1
3287     shift
3288     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3289     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3290 }
3291
3292 for opt do
3293     optval="${opt#*=}"
3294     case "$opt" in
3295         --extra-ldflags=*)
3296             add_ldflags $optval
3297         ;;
3298         --extra-ldexeflags=*)
3299             add_ldexeflags $optval
3300         ;;
3301         --extra-ldlibflags=*)
3302             add_ldlibflags $optval
3303         ;;
3304         --extra-libs=*)
3305             add_extralibs $optval
3306         ;;
3307         --disable-devices)
3308             disable $INDEV_LIST $OUTDEV_LIST
3309         ;;
3310         --enable-debug=*)
3311             debuglevel="$optval"
3312         ;;
3313         --disable-programs)
3314             disable $PROGRAM_LIST
3315         ;;
3316         --disable-everything)
3317             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3318         ;;
3319         --disable-all)
3320             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3321             disable $LIBRARY_LIST $PROGRAM_LIST doc
3322             enable avutil
3323         ;;
3324         --enable-random|--disable-random)
3325             action=${opt%%-random}
3326             do_random ${action#--} $COMPONENT_LIST
3327         ;;
3328         --enable-random=*|--disable-random=*)
3329             action=${opt%%-random=*}
3330             do_random ${action#--} $optval
3331         ;;
3332         --enable-*=*|--disable-*=*)
3333             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3334             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3335             eval list=\$$(toupper $thing)_LIST
3336             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3337             list=$(filter "$name" $list)
3338             [ "$list" = "" ] && warn "Option $opt did not match anything"
3339             $action $list
3340         ;;
3341         --enable-?*|--disable-?*)
3342             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3343             if is_in $option $COMPONENT_LIST; then
3344                 test $action = disable && action=unset
3345                 eval $action \$$(toupper ${option%s})_LIST
3346             elif is_in $option $CMDLINE_SELECT; then
3347                 $action $option
3348             else
3349                 die_unknown $opt
3350             fi
3351         ;;
3352         --list-*)
3353             NAME="${opt#--list-}"
3354             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3355             NAME=${NAME%s}
3356             eval show_list $NAME \$$(toupper $NAME)_LIST
3357         ;;
3358         --help|-h) show_help
3359         ;;
3360         --fatal-warnings) enable fatal_warnings
3361         ;;
3362         *)
3363             optname="${opt%%=*}"
3364             optname="${optname#--}"
3365             optname=$(echo "$optname" | sed 's/-/_/g')
3366             if is_in $optname $CMDLINE_SET; then
3367                 eval $optname='$optval'
3368             elif is_in $optname $CMDLINE_APPEND; then
3369                 append $optname "$optval"
3370             else
3371                 die_unknown $opt
3372             fi
3373         ;;
3374     esac
3375 done
3376
3377 for e in $env; do
3378     eval "export $e"
3379 done
3380
3381 disabled logging && logfile=/dev/null
3382
3383 # Disable all the library-specific components if the library itself
3384 # is disabled, see AVCODEC_LIST and following _LIST variables.
3385
3386 disable_components(){
3387     disabled ${1} && disable $(
3388         eval components="\$$(toupper ${1})_COMPONENTS"
3389         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3390     )
3391 }
3392
3393 map 'disable_components $v' $LIBRARY_LIST
3394
3395 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3396 set >> $logfile
3397
3398 test -n "$valgrind" && toolchain="valgrind-memcheck"
3399
3400 case "$toolchain" in
3401     *-asan)
3402         cc_default="${toolchain%-asan}"
3403         add_cflags  -fsanitize=address
3404         add_ldflags -fsanitize=address
3405     ;;
3406     *-msan)
3407         cc_default="${toolchain%-msan}"
3408         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3409         add_ldflags -fsanitize=memory
3410     ;;
3411     *-tsan)
3412         cc_default="${toolchain%-tsan}"
3413         add_cflags  -fsanitize=thread -pie
3414         add_ldflags -fsanitize=thread -pie
3415         case "$toolchain" in
3416             gcc-tsan)
3417                 add_cflags  -fPIC
3418                 add_ldflags -fPIC
3419                 ;;
3420         esac
3421     ;;
3422     *-usan)
3423         cc_default="${toolchain%-usan}"
3424         add_cflags  -fsanitize=undefined
3425         add_ldflags -fsanitize=undefined
3426     ;;
3427     valgrind-*)
3428         target_exec_default="valgrind"
3429         case "$toolchain" in
3430             valgrind-massif)
3431                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3432                 ;;
3433             valgrind-memcheck)
3434                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3435                 ;;
3436         esac
3437     ;;
3438     msvc)
3439         # Check whether the current MSVC version needs the C99 converter.
3440         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3441         # support enough of C99 to build ffmpeg. Default to the new
3442         # behaviour if the regexp was unable to match anything, since this
3443         # successfully parses the version number of existing supported
3444         # versions that require the converter (MSVC 2010 and 2012).
3445         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3446         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3447             cc_default="cl"
3448         else
3449             cc_default="c99wrap cl"
3450         fi
3451         ld_default="$source_path/compat/windows/mslink"
3452         nm_default="dumpbin -symbols"
3453         ar_default="lib"
3454         case "$arch" in
3455         arm*)
3456             as_default="armasm"
3457             ;;
3458         esac
3459         target_os_default="win32"
3460         # Use a relative path for TMPDIR. This makes sure all the
3461         # ffconf temp files are written with a relative path, avoiding
3462         # issues with msys/win32 path conversion for MSVC parameters
3463         # such as -Fo<file> or -out:<file>.
3464         TMPDIR=.
3465     ;;
3466     icl)
3467         cc_default="icl"
3468         ld_default="xilink"
3469         nm_default="dumpbin -symbols"
3470         ar_default="xilib"
3471         target_os_default="win32"
3472         TMPDIR=.
3473     ;;
3474     gcov)
3475         add_cflags  -fprofile-arcs -ftest-coverage
3476         add_ldflags -fprofile-arcs -ftest-coverage
3477     ;;
3478     llvm-cov)
3479         add_cflags -fprofile-arcs -ftest-coverage
3480         add_ldflags --coverage
3481     ;;
3482     hardened)
3483         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3484         add_cflags   -fno-strict-overflow -fstack-protector-all
3485         add_ldflags  -Wl,-z,relro -Wl,-z,now
3486     ;;
3487     ?*)
3488         die "Unknown toolchain $toolchain"
3489     ;;
3490 esac
3491
3492 test -n "$cross_prefix" && enable cross_compile
3493
3494 if enabled cross_compile; then
3495     test -n "$arch" && test -n "$target_os" ||
3496         die "Must specify target arch and OS when cross-compiling"
3497 fi
3498
3499 ar_default="${cross_prefix}${ar_default}"
3500 cc_default="${cross_prefix}${cc_default}"
3501 cxx_default="${cross_prefix}${cxx_default}"
3502 nm_default="${cross_prefix}${nm_default}"
3503 pkg_config_default="${cross_prefix}${pkg_config_default}"
3504 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3505     ranlib_default="${cross_prefix}${ranlib_default} -D"
3506 else
3507     ranlib_default="${cross_prefix}${ranlib_default}"
3508 fi
3509 strip_default="${cross_prefix}${strip_default}"
3510 windres_default="${cross_prefix}${windres_default}"
3511
3512 sysinclude_default="${sysroot}/usr/include"
3513
3514 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3515     target_exec target_os yasmexe
3516 enabled cross_compile || host_cc_default=$cc
3517 set_default host_cc
3518
3519 pkg_config_fail_message=""
3520 if ! $pkg_config --version >/dev/null 2>&1; then
3521     warn "$pkg_config not found, library detection may fail."
3522     pkg_config=false
3523 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3524     pkg_config_fail_message="
3525 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3526 fi
3527
3528 if test $doxygen != $doxygen_default && \
3529   ! $doxygen --version >/dev/null 2>&1; then
3530     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3531 fi
3532
3533 exesuf() {
3534     case $1 in
3535         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3536     esac
3537 }
3538
3539 EXESUF=$(exesuf $target_os)
3540 HOSTEXESUF=$(exesuf $host_os)
3541
3542 # set temporary file name
3543 : ${TMPDIR:=$TEMPDIR}
3544 : ${TMPDIR:=$TMP}
3545 : ${TMPDIR:=/tmp}
3546
3547 if [ -n "$tempprefix" ] ; then
3548     mktemp(){
3549         echo $tempprefix.${HOSTNAME}.${UID}
3550     }
3551 elif ! check_cmd mktemp -u XXXXXX; then
3552     # simple replacement for missing mktemp
3553     # NOT SAFE FOR GENERAL USE
3554     mktemp(){
3555         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3556     }
3557 fi
3558
3559 tmpfile(){
3560     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3561         (set -C; exec > $tmp) 2>/dev/null ||
3562         die "Unable to create temporary file in $TMPDIR."
3563     append TMPFILES $tmp
3564     eval $1=$tmp
3565 }
3566
3567 trap 'rm -f -- $TMPFILES' EXIT
3568
3569 tmpfile TMPASM .asm
3570 tmpfile TMPC   .c
3571 tmpfile TMPCPP .cpp
3572 tmpfile TMPE   $EXESUF
3573 tmpfile TMPH   .h
3574 tmpfile TMPM   .m
3575 tmpfile TMPO   .o
3576 tmpfile TMPS   .S
3577 tmpfile TMPSH  .sh
3578 tmpfile TMPV   .ver
3579
3580 unset -f mktemp
3581
3582 chmod +x $TMPE
3583
3584 # make sure we can execute files in $TMPDIR
3585 cat > $TMPSH 2>> $logfile <<EOF
3586 #! /bin/sh
3587 EOF
3588 chmod +x $TMPSH >> $logfile 2>&1
3589 if ! $TMPSH >> $logfile 2>&1; then
3590     cat <<EOF
3591 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3592 variable to another directory and make sure that it is not mounted noexec.
3593 EOF
3594     die "Sanity test failed."
3595 fi
3596
3597 armasm_flags(){
3598     for flag; do
3599         case $flag in
3600             # Filter out MSVC cl.exe options from cflags that shouldn't
3601             # be passed to gas-preprocessor
3602             -M[TD]*)                                            ;;
3603             *)                  echo $flag                      ;;
3604         esac
3605    done
3606 }
3607
3608 ccc_flags(){
3609     for flag; do
3610         case $flag in
3611             -std=c99)           echo -c99                       ;;
3612             -mcpu=*)            echo -arch ${flag#*=}           ;;
3613             -mieee)             echo -ieee                      ;;
3614             -O*|-fast)          echo $flag                      ;;
3615             -fno-math-errno)    echo -assume nomath_errno       ;;
3616             -g)                 echo -g3                        ;;
3617             -Wall)              echo -msg_enable level2         ;;
3618             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3619             -Wl,*)              echo $flag                      ;;
3620             -f*|-W*)                                            ;;
3621             *)                  echo $flag                      ;;
3622         esac
3623    done
3624 }
3625
3626 cparser_flags(){
3627     for flag; do
3628         case $flag in
3629             -Wno-switch)             echo -Wno-switch-enum ;;
3630             -Wno-format-zero-length) ;;
3631             -Wdisabled-optimization) ;;
3632             -Wno-pointer-sign)       echo -Wno-other ;;
3633             *)                       echo $flag ;;
3634         esac
3635     done
3636 }
3637
3638 msvc_common_flags(){
3639     for flag; do
3640         case $flag in
3641             # In addition to specifying certain flags under the compiler
3642             # specific filters, they must be specified here as well or else the
3643             # generic catch all at the bottom will print the original flag.
3644             -Wall)                ;;
3645             -std=c99)             ;;
3646             # Common flags
3647             -fomit-frame-pointer) ;;
3648             -g)                   echo -Z7 ;;
3649             -fno-math-errno)      ;;
3650             -fno-common)          ;;
3651             -fno-signed-zeros)    ;;
3652             -fPIC)                ;;
3653             -mthumb)              ;;
3654             -march=*)             ;;
3655             -lz)                  echo zlib.lib ;;
3656             -lavifil32)           echo vfw32.lib ;;
3657             -lavicap32)           echo vfw32.lib user32.lib ;;
3658             -lx264)               echo libx264.lib ;;
3659             -l*)                  echo ${flag#-l}.lib ;;
3660             -LARGEADDRESSAWARE)   echo $flag ;;
3661             -L*)                  echo -libpath:${flag#-L} ;;
3662             *)                    echo $flag ;;
3663         esac
3664     done
3665 }
3666
3667 msvc_flags(){
3668     msvc_common_flags "$@"
3669     for flag; do
3670         case $flag in
3671             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3672                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3673                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3674                                        -wd4307 \
3675                                        -wd4273 -wd4554 -wd4701 ;;
3676         esac
3677     done
3678 }
3679
3680 icl_flags(){
3681     msvc_common_flags "$@"
3682     for flag; do
3683         case $flag in
3684             # Despite what Intel's documentation says -Wall, which is supported
3685             # on Windows, does enable remarks so disable them here.
3686             -Wall)                echo $flag -Qdiag-disable:remark ;;
3687             -std=c99)             echo -Qstd=c99 ;;
3688             -flto)                echo -ipo ;;
3689         esac
3690     done
3691 }
3692
3693 icc_flags(){
3694     for flag; do
3695         case $flag in
3696             -flto)                echo -ipo ;;
3697             *)                    echo $flag ;;
3698         esac
3699     done
3700 }
3701
3702 pgi_flags(){
3703     for flag; do
3704         case $flag in
3705             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3706             -fomit-frame-pointer) echo -Mnoframe ;;
3707             -g)                   echo -gopt ;;
3708             *)                    echo $flag ;;
3709         esac
3710     done
3711 }
3712
3713 suncc_flags(){
3714     for flag; do
3715         case $flag in
3716             -march=*|-mcpu=*)
3717                 case "${flag#*=}" in
3718                     native)                   echo -xtarget=native       ;;
3719                     v9|niagara)               echo -xarch=sparc          ;;
3720                     ultrasparc)               echo -xarch=sparcvis       ;;
3721                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3722                     i586|pentium)             echo -xchip=pentium        ;;
3723                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3724                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3725                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3726                     pentium4*)          echo -xtarget=pentium4           ;;
3727                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3728                     *-sse3)             echo -xarch=sse3                 ;;
3729                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3730                     bonnell)                   echo -xarch=ssse3         ;;
3731                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3732                     westmere)                  echo -xtarget=westmere    ;;
3733                     silvermont)                echo -xarch=sse4_2        ;;
3734                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3735                     core-avx*|ivybridge|haswell|broadwell)
3736                                                echo -xarch=avx           ;;
3737                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3738                     btver1)                    echo -xarch=amdsse4a      ;;
3739                     btver2|bdver*)             echo -xarch=avx           ;;
3740                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3741                     k8|opteron|athlon64|athlon-fx)
3742                                                echo -xarch=sse2a         ;;
3743                     athlon*)                   echo -xarch=pentium_proa  ;;
3744                 esac
3745                 ;;
3746             -std=c99)             echo -xc99              ;;
3747             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3748             -fPIC)                echo -KPIC -xcode=pic32 ;;
3749             -W*,*)                echo $flag              ;;
3750             -f*-*|-W*|-mimpure-text)                      ;;
3751             -shared)              echo -G                 ;;
3752             *)                    echo $flag              ;;
3753         esac
3754     done
3755 }
3756
3757 tms470_flags(){
3758     for flag; do
3759         case $flag in
3760             -march=*|-mcpu=*)
3761                 case "${flag#*=}" in
3762                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3763                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3764                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3765                     armv6*|arm11*)          echo -mv=6   ;;
3766                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3767                                             echo -mv=5e  ;;
3768                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3769                 esac
3770                 ;;
3771             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3772             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3773             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3774             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3775             -msoft-float)   echo --float_support=vfplib       ;;
3776             -O[0-3]|-mf=*)  echo $flag                        ;;
3777             -g)             echo -g -mn                       ;;
3778             -pds=*)         echo $flag                        ;;
3779             -D*|-I*)        echo $flag                        ;;
3780             --gcc|--abi=*)  echo $flag                        ;;
3781             -me)            echo $flag                        ;;
3782         esac
3783     done
3784 }
3785
3786 probe_cc(){
3787     pfx=$1
3788     _cc=$2
3789     first=$3
3790
3791     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3792     unset _ld_o _ldflags _ld_lib _ld_path
3793     unset _depflags _DEPCMD _DEPFLAGS
3794     _flags_filter=echo
3795
3796     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3797         true # no-op to avoid reading stdin in following checks
3798     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3799         _type=llvm_gcc
3800         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3801         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3802         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3803         _cflags_speed='-O3'
3804         _cflags_size='-Os'
3805     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3806         _type=gcc
3807         gcc_version=$($_cc --version | head -n1)
3808         gcc_basever=$($_cc -dumpversion)
3809         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3810         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3811         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3812         case $gcc_basever in
3813             2) ;;
3814             2.*) ;;
3815             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3816         esac
3817         if [ "$first" = true ]; then
3818             case $gcc_basever in
3819                 4.2*)
3820                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3821             esac
3822         fi
3823         _cflags_speed='-O3'
3824         _cflags_size='-Os'
3825     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3826         _type=icc
3827         _ident=$($_cc --version | head -n1)
3828         _depflags='-MMD'
3829         _cflags_speed='-O3'
3830         _cflags_size='-Os'
3831         _cflags_noopt='-O1'
3832         _flags_filter=icc_flags
3833     elif $_cc -v 2>&1 | grep -q xlc; then
3834         _type=xlc
3835         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3836         _cflags_speed='-O5'
3837         _cflags_size='-O5 -qcompact'
3838     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3839         _type=ccc
3840         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3841         _DEPFLAGS='-M'
3842         _cflags_speed='-fast'
3843         _cflags_size='-O1'
3844         _flags_filter=ccc_flags
3845     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3846         test -d "$sysroot" || die "No valid sysroot specified."
3847         _type=armcc
3848         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3849         armcc_conf="$PWD/armcc.conf"
3850         $_cc --arm_linux_configure                 \
3851              --arm_linux_config_file="$armcc_conf" \
3852              --configure_sysroot="$sysroot"        \
3853              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3854              die "Error creating armcc configuration file."
3855         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3856         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3857         as_default="${cross_prefix}gcc"
3858         _depflags='-MMD'
3859         _cflags_speed='-O3'
3860         _cflags_size='-Os'
3861     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3862         _type=tms470
3863         _ident=$($_cc -version | head -n1 | tr -s ' ')
3864         _flags='--gcc --abi=eabi -me'
3865         _cc_e='-ppl -fe=$@'
3866         _cc_o='-fe=$@'
3867         _depflags='-ppa -ppd=$(@:.o=.d)'
3868         _cflags_speed='-O3 -mf=5'
3869         _cflags_size='-O3 -mf=2'
3870         _flags_filter=tms470_flags
3871     elif $_cc -v 2>&1 | grep -q clang; then
3872         _type=clang
3873         _ident=$($_cc --version 2>/dev/null | head -n1)
3874         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3875         _cflags_speed='-O3'
3876         _cflags_size='-Os'
3877     elif $_cc -V 2>&1 | grep -q Sun; then
3878         _type=suncc
3879         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3880         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3881         _DEPFLAGS='-xM1 -xc99'
3882         _ldflags='-std=c99'
3883         _cflags_speed='-O5'
3884         _cflags_size='-O5 -xspace'
3885         _flags_filter=suncc_flags
3886     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3887         _type=pathscale
3888         _ident=$($_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'
3893     elif $_cc -v 2>&1 | grep -q Open64; then
3894         _type=open64
3895         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3896         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3897         _cflags_speed='-O2'
3898         _cflags_size='-Os'
3899         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3900     elif $_cc -V 2>&1 | grep -q Portland; then
3901         _type=pgi
3902         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3903         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3904         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3905         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3906         _cflags_noopt="-O"
3907         _flags_filter=pgi_flags
3908     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3909         _type=armasm
3910         _ident=$($_cc | head -n1)
3911         # 4509: "This form of conditional instruction is deprecated"
3912         _flags="-nologo -ignore 4509"
3913         _flags_filter=armasm_flags
3914     elif $_cc 2>&1 | grep -q Intel; then
3915         _type=icl
3916         _ident=$($_cc 2>&1 | head -n1)
3917         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3918         # Not only is O3 broken on 13.x+ but it is slower on all previous
3919         # versions (tested) as well.
3920         _cflags_speed="-O2"
3921         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3922         if $_cc 2>&1 | grep -q Linker; then
3923             _ld_o='-out:$@'
3924         else
3925             _ld_o='-Fe$@'
3926         fi
3927         _cc_o='-Fo$@'
3928         _cc_e='-P'
3929         _flags_filter=icl_flags
3930         _ld_lib='lib%.a'
3931         _ld_path='-libpath:'
3932         # -Qdiag-error to make icl error when seeing certain unknown arguments
3933         _flags='-nologo -Qdiag-error:4044,10157'
3934         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3935         # with MSVC which enables it by default.
3936         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3937         disable stripping
3938     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3939         _type=msvc
3940         _ident=$($_cc 2>&1 | head -n1)
3941         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3942         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3943         _cflags_speed="-O2"
3944         _cflags_size="-O1"
3945         if $_cc -nologo- 2>&1 | grep -q Linker; then
3946             _ld_o='-out:$@'
3947         else
3948             _ld_o='-Fe$@'
3949         fi
3950         _cc_o='-Fo$@'
3951         _cc_e='-P -Fi$@'
3952         _flags_filter=msvc_flags
3953         _ld_lib='lib%.a'
3954         _ld_path='-libpath:'
3955         _flags='-nologo'
3956         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3957         disable stripping
3958     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3959         _type=cparser
3960         _ident=$($_cc --version | head -n1)
3961         _depflags='-MMD'
3962         _cflags_speed='-O4'
3963         _cflags_size='-O2'
3964         _flags_filter=cparser_flags
3965     fi
3966
3967     eval ${pfx}_type=\$_type
3968     eval ${pfx}_ident=\$_ident
3969 }
3970
3971 set_ccvars(){
3972     eval ${1}_C=\${_cc_c-\${${1}_C}}
3973     eval ${1}_E=\${_cc_e-\${${1}_E}}
3974     eval ${1}_O=\${_cc_o-\${${1}_O}}
3975
3976     if [ -n "$_depflags" ]; then
3977         eval ${1}_DEPFLAGS=\$_depflags
3978     else
3979         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3980         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3981         eval DEP${1}FLAGS=\$_flags
3982     fi
3983 }
3984
3985 probe_cc cc "$cc" "true"
3986 cflags_filter=$_flags_filter
3987 cflags_speed=$_cflags_speed
3988 cflags_size=$_cflags_size
3989 cflags_noopt=$_cflags_noopt
3990 add_cflags $_flags $_cflags
3991 cc_ldflags=$_ldflags
3992 set_ccvars CC
3993
3994 probe_cc hostcc "$host_cc"
3995 host_cflags_filter=$_flags_filter
3996 add_host_cflags  $_flags $_cflags
3997 set_ccvars HOSTCC
3998
3999 test -n "$cc_type" && enable $cc_type ||
4000     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4001
4002 : ${as_default:=$cc}
4003 : ${objcc_default:=$cc}
4004 : ${dep_cc_default:=$cc}
4005 : ${ld_default:=$cc}
4006 : ${host_ld_default:=$host_cc}
4007 set_default ar as objcc dep_cc ld ln_s host_ld windres
4008
4009 probe_cc as "$as"
4010 asflags_filter=$_flags_filter
4011 add_asflags $_flags $_cflags
4012 set_ccvars AS
4013
4014 probe_cc objcc "$objcc"
4015 objcflags_filter=$_flags_filter
4016 add_objcflags $_flags $_cflags
4017 set_ccvars OBJC
4018
4019 probe_cc ld "$ld"
4020 ldflags_filter=$_flags_filter
4021 add_ldflags $_flags $_ldflags
4022 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4023 LD_O=${_ld_o-$LD_O}
4024 LD_LIB=${_ld_lib-$LD_LIB}
4025 LD_PATH=${_ld_path-$LD_PATH}
4026
4027 probe_cc hostld "$host_ld"
4028 host_ldflags_filter=$_flags_filter
4029 add_host_ldflags $_flags $_ldflags
4030 HOSTLD_O=${_ld_o-$HOSTLD_O}
4031
4032 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4033     probe_cc depcc "$dep_cc"
4034     CCDEP=${_DEPCMD:-$DEPCMD}
4035     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4036     DEPCCFLAGS=$_flags
4037 fi
4038
4039 if $ar 2>&1 | grep -q Microsoft; then
4040     arflags="-nologo"
4041     ar_o='-out:$@'
4042 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4043     arflags="rq"
4044     ar_o='$@'
4045 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4046     arflags='-Xany -r -c'
4047     ar_o='$@'
4048 elif $ar 2>&1 | grep -q "\[D\] "; then
4049     arflags="rcD"
4050     ar_o='$@'
4051 else
4052     arflags="rc"
4053     ar_o='$@'
4054 fi
4055
4056 add_cflags $extra_cflags
4057 add_cxxflags $extra_cxxflags
4058 add_objcflags $extra_objcflags
4059 add_asflags $extra_cflags
4060
4061 if test -n "$sysroot"; then
4062     case "$cc_type" in
4063         gcc|llvm_gcc|clang)
4064             add_cppflags --sysroot="$sysroot"
4065             add_ldflags --sysroot="$sysroot"
4066 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4067             add_cppflags -isysroot "$sysroot"
4068             add_ldflags -isysroot "$sysroot"
4069         ;;
4070         tms470)
4071             add_cppflags -I"$sysinclude"
4072             add_ldflags  --sysroot="$sysroot"
4073         ;;
4074     esac
4075 fi
4076
4077 if test "$cpu" = host; then
4078     enabled cross_compile &&
4079         die "--cpu=host makes no sense when cross-compiling."
4080
4081     case "$cc_type" in
4082         gcc|llvm_gcc)
4083             check_native(){
4084                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4085                 sed -n "/cc1.*$1=/{
4086                             s/.*$1=\\([^ ]*\\).*/\\1/
4087                             p
4088                             q
4089                         }" $TMPE
4090             }
4091             cpu=$(check_native -march || check_native -mcpu)
4092         ;;
4093         clang)
4094             check_native(){
4095                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4096                 sed -n "/cc1.*-target-cpu /{
4097                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4098                             p
4099                             q
4100                         }" $TMPE
4101             }
4102             cpu=$(check_native -march)
4103         ;;
4104     esac
4105
4106     test "${cpu:-host}" = host &&
4107         die "--cpu=host not supported with compiler $cc"
4108 fi
4109
4110 # Deal with common $arch aliases
4111 case "$arch" in
4112     aarch64|arm64)
4113         arch="aarch64"
4114     ;;
4115     arm*|iPad*|iPhone*)
4116         arch="arm"
4117     ;;
4118     mips*|IP*)
4119         case "$arch" in
4120         *el)
4121             add_cppflags -EL
4122             add_ldflags -EL
4123         ;;
4124         *eb)
4125             add_cppflags -EB
4126             add_ldflags -EB
4127         ;;
4128         esac
4129         arch="mips"
4130     ;;
4131     parisc*|hppa*)
4132         arch="parisc"
4133     ;;
4134     "Power Macintosh"|ppc*|powerpc*)
4135         arch="ppc"
4136     ;;
4137     s390|s390x)
4138         arch="s390"
4139     ;;
4140     sh4|sh)
4141         arch="sh4"
4142     ;;
4143     sun4u|sparc*)
4144         arch="sparc"
4145     ;;
4146     tilegx|tile-gx)
4147         arch="tilegx"
4148     ;;
4149     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4150         arch="x86"
4151     ;;
4152 esac
4153
4154 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4155 enable $arch
4156
4157 # Add processor-specific flags
4158 if enabled aarch64; then
4159
4160     case $cpu in
4161         armv*)
4162             cpuflags="-march=$cpu"
4163         ;;
4164         *)
4165             cpuflags="-mcpu=$cpu"
4166         ;;
4167     esac
4168
4169 elif enabled alpha; then
4170
4171     cpuflags="-mcpu=$cpu"
4172
4173 elif enabled arm; then
4174
4175     check_arm_arch() {
4176         check_cpp_condition stddef.h \
4177             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4178             $cpuflags
4179     }
4180
4181     probe_arm_arch() {
4182         if   check_arm_arch 4;        then echo armv4;
4183         elif check_arm_arch 4T;       then echo armv4t;
4184         elif check_arm_arch 5;        then echo armv5;
4185         elif check_arm_arch 5E;       then echo armv5e;
4186         elif check_arm_arch 5T;       then echo armv5t;
4187         elif check_arm_arch 5TE;      then echo armv5te;
4188         elif check_arm_arch 5TEJ;     then echo armv5te;
4189         elif check_arm_arch 6;        then echo armv6;
4190         elif check_arm_arch 6J;       then echo armv6j;
4191         elif check_arm_arch 6K;       then echo armv6k;
4192         elif check_arm_arch 6Z;       then echo armv6z;
4193         elif check_arm_arch 6ZK;      then echo armv6zk;
4194         elif check_arm_arch 6T2;      then echo armv6t2;
4195         elif check_arm_arch 7;        then echo armv7;
4196         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4197         elif check_arm_arch 7S;       then echo armv7-a;
4198         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4199         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4200         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4201         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4202         fi
4203     }
4204
4205     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4206
4207     case $cpu in
4208         armv*)
4209             cpuflags="-march=$cpu"
4210             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4211         ;;
4212         *)
4213             cpuflags="-mcpu=$cpu"
4214             case $cpu in
4215                 cortex-a*)                               subarch=armv7a  ;;
4216                 cortex-r*)                               subarch=armv7r  ;;
4217                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4218                 arm11*)                                  subarch=armv6   ;;
4219                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4220                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4221                 *)                             subarch=$(probe_arm_arch) ;;
4222             esac
4223         ;;
4224     esac
4225
4226     case "$subarch" in
4227         armv5t*)    enable fast_clz                ;;
4228         armv[6-8]*)
4229             enable fast_clz
4230             disabled fast_unaligned || enable fast_unaligned
4231             ;;
4232     esac
4233
4234 elif enabled avr32; then
4235
4236     case $cpu in
4237         ap7[02]0[0-2])
4238             subarch="avr32_ap"
4239             cpuflags="-mpart=$cpu"
4240         ;;
4241         ap)
4242             subarch="avr32_ap"
4243             cpuflags="-march=$cpu"
4244         ;;
4245         uc3[ab]*)
4246             subarch="avr32_uc"
4247             cpuflags="-mcpu=$cpu"
4248         ;;
4249         uc)
4250             subarch="avr32_uc"
4251             cpuflags="-march=$cpu"
4252         ;;
4253     esac
4254
4255 elif enabled bfin; then
4256
4257     cpuflags="-mcpu=$cpu"
4258
4259 elif enabled mips; then
4260
4261     cpuflags="-march=$cpu"
4262
4263     if [ "$cpu" != "generic" ]; then
4264         disable mips32r2
4265         disable mips32r5
4266         disable mips64r2
4267         disable mips32r6
4268         disable mips64r6
4269         disable loongson2
4270         disable loongson3
4271
4272         case $cpu in
4273             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4274                 enable mips32r2
4275                 disable msa
4276             ;;
4277             p5600|i6400)
4278                 disable mipsdsp
4279                 disable mipsdspr2
4280             ;;
4281             loongson*)
4282                 enable loongson2
4283                 enable loongson3
4284                 enable local_aligned_8 local_aligned_16 local_aligned_32
4285                 enable simd_align_16
4286                 enable fast_64bit
4287                 enable fast_clz
4288                 enable fast_cmov
4289                 enable fast_unaligned
4290                 disable aligned_stack
4291                 case $cpu in
4292                     loongson3*)
4293                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4294                     ;;
4295                     loongson2e)
4296                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4297                     ;;
4298                     loongson2f)
4299                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4300                     ;;
4301                 esac
4302             ;;
4303             *)
4304                 # Unknown CPU. Disable everything.
4305                 warn "unknown CPU. Disabling all MIPS optimizations."
4306                 disable mipsfpu
4307                 disable mipsdsp
4308                 disable mipsdspr2
4309                 disable msa
4310                 disable mmi
4311             ;;
4312         esac
4313
4314         case $cpu in
4315             24kc)
4316                 disable mipsfpu
4317                 disable mipsdsp
4318                 disable mipsdspr2
4319             ;;
4320             24kf*)
4321                 disable mipsdsp
4322                 disable mipsdspr2
4323             ;;
4324             24kec|34kc|1004kc)
4325                 disable mipsfpu
4326                 disable mipsdspr2
4327             ;;
4328             24kef*|34kf*|1004kf*)
4329                 disable mipsdspr2
4330             ;;
4331             74kc)
4332                 disable mipsfpu
4333             ;;
4334             p5600)
4335                 enable mips32r5
4336                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4337             ;;
4338             i6400)
4339                 enable mips64r6
4340                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4341             ;;
4342         esac
4343     else
4344         # We do not disable anything. Is up to the user to disable the unwanted features.
4345         warn 'generic cpu selected'
4346     fi
4347
4348 elif enabled ppc; then
4349
4350     disable ldbrx
4351
4352     case $(tolower $cpu) in
4353         601|ppc601|powerpc601)
4354             cpuflags="-mcpu=601"
4355             disable altivec
4356         ;;
4357         603*|ppc603*|powerpc603*)
4358             cpuflags="-mcpu=603"
4359             disable altivec
4360         ;;
4361         604*|ppc604*|powerpc604*)
4362             cpuflags="-mcpu=604"
4363             disable altivec
4364         ;;
4365         g3|75*|ppc75*|powerpc75*)
4366             cpuflags="-mcpu=750"
4367             disable altivec
4368         ;;
4369         g4|745*|ppc745*|powerpc745*)
4370             cpuflags="-mcpu=7450"
4371             disable vsx
4372         ;;
4373         74*|ppc74*|powerpc74*)
4374             cpuflags="-mcpu=7400"
4375             disable vsx
4376         ;;
4377         g5|970|ppc970|powerpc970)
4378             cpuflags="-mcpu=970"
4379             disable vsx
4380         ;;
4381         power[3-6]*)
4382             cpuflags="-mcpu=$cpu"
4383             disable vsx
4384         ;;
4385         power[7-8]*)
4386             cpuflags="-mcpu=$cpu"
4387         ;;
4388         cell)
4389             cpuflags="-mcpu=cell"
4390             enable ldbrx
4391             disable vsx
4392         ;;
4393         e500mc)
4394             cpuflags="-mcpu=e500mc"
4395             disable altivec
4396         ;;
4397         e500v2)
4398             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4399             disable altivec
4400             disable dcbzl
4401         ;;
4402         e500)
4403             cpuflags="-mcpu=8540 -mhard-float"
4404             disable altivec
4405             disable dcbzl
4406         ;;
4407     esac
4408
4409 elif enabled sparc; then
4410
4411     case $cpu in
4412         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4413             cpuflags="-mcpu=$cpu"
4414         ;;
4415         ultrasparc*|niagara[234])
4416             cpuflags="-mcpu=$cpu"
4417         ;;
4418     esac
4419
4420 elif enabled x86; then
4421
4422     case $cpu in
4423         i[345]86|pentium)
4424             cpuflags="-march=$cpu"
4425             disable i686
4426             disable mmx
4427         ;;
4428         # targets that do NOT support nopl and conditional mov (cmov)
4429         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4430             cpuflags="-march=$cpu"
4431             disable i686
4432         ;;
4433         # targets that do support nopl and conditional mov (cmov)
4434         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4435         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4436             cpuflags="-march=$cpu"
4437             enable i686
4438             enable fast_cmov
4439         ;;
4440         # targets that do support conditional mov but on which it's slow
4441         pentium4|pentium4m|prescott|nocona)
4442             cpuflags="-march=$cpu"
4443             enable i686
4444             disable fast_cmov
4445         ;;
4446     esac
4447
4448 fi
4449
4450 if [ "$cpu" != generic ]; then
4451     add_cflags  $cpuflags
4452     add_asflags $cpuflags
4453     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4454 fi
4455
4456 # compiler sanity check
4457 check_exec <<EOF
4458 int main(void){ return 0; }
4459 EOF
4460 if test "$?" != 0; then
4461     echo "$cc is unable to create an executable file."
4462     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4463         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4464         echo "Only do this if you know what cross compiling means."
4465     fi
4466     die "C compiler test failed."
4467 fi
4468
4469 add_cppflags -D_ISOC99_SOURCE
4470 add_cxxflags -D__STDC_CONSTANT_MACROS
4471 check_cflags -std=c99
4472 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4473 #include <stdlib.h>
4474 EOF
4475 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4476 #include <stdlib.h>
4477 EOF
4478
4479 add_host_cppflags -D_ISOC99_SOURCE
4480 check_host_cflags -std=c99
4481 check_host_cflags -Wall
4482 check_host_cflags -O3
4483
4484 check_64bit(){
4485     arch32=$1
4486     arch64=$2
4487     expr=$3
4488     check_code cc "" "int test[2*($expr) - 1]" &&
4489         subarch=$arch64 || subarch=$arch32
4490 }
4491
4492 case "$arch" in
4493     aarch64|alpha|ia64)
4494         spic=$shared
4495     ;;
4496     mips)
4497         check_64bit mips mips64 '_MIPS_SIM > 1'
4498         spic=$shared
4499     ;;
4500     parisc)
4501         check_64bit parisc parisc64 'sizeof(void *) > 4'
4502         spic=$shared
4503     ;;
4504     ppc)
4505         check_64bit ppc ppc64 'sizeof(void *) > 4'
4506         spic=$shared
4507     ;;
4508     s390)
4509         check_64bit s390 s390x 'sizeof(void *) > 4'
4510         spic=$shared
4511     ;;
4512     sparc)
4513         check_64bit sparc sparc64 'sizeof(void *) > 4'
4514         spic=$shared
4515     ;;
4516     x86)
4517         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4518         # Treat x32 as x64 for now. Note it also needs spic=$shared
4519         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4520             subarch=x86_64
4521         if test "$subarch" = "x86_64"; then
4522             spic=$shared
4523         fi
4524     ;;
4525     ppc)
4526         check_cc <<EOF && subarch="ppc64"
4527         int test[(int)sizeof(char*) - 7];
4528 EOF
4529     ;;
4530 esac
4531
4532 enable $subarch
4533 enabled spic && enable_weak pic
4534
4535 # OS specific
4536 case $target_os in
4537     aix)
4538         SHFLAGS=-shared
4539         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4540         enabled shared && add_ldflags -Wl,-brtl
4541         ;;
4542     android)
4543         disable symver
4544         enable section_data_rel_ro
4545         SLIB_INSTALL_NAME='$(SLIBNAME)'
4546         SLIB_INSTALL_LINKS=
4547         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4548         ;;
4549     haiku)
4550         prefix_default="/boot/common"
4551         network_extralibs="-lnetwork"
4552         host_libs=
4553         ;;
4554     sunos)
4555         SHFLAGS='-shared -Wl,-h,$$(@F)'
4556         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4557         network_extralibs="-lsocket -lnsl"
4558         add_cppflags -D__EXTENSIONS__
4559         # When using suncc to build, the Solaris linker will mark
4560         # an executable with each instruction set encountered by
4561         # the Solaris assembler.  As our libraries contain their own
4562         # guards for processor-specific code, instead suppress
4563         # generation of the HWCAPS ELF section on Solaris x86 only.
4564         enabled_all suncc x86 &&
4565             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4566             add_ldflags -Wl,-M,mapfile
4567         nm_default='nm -P -g'
4568         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4569         ;;
4570     netbsd)
4571         disable symver
4572         oss_indev_extralibs="-lossaudio"
4573         oss_outdev_extralibs="-lossaudio"
4574         enabled gcc || check_ldflags -Wl,-zmuldefs
4575         ;;
4576     openbsd|bitrig)
4577         disable symver
4578         SHFLAGS='-shared'
4579         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4580         SLIB_INSTALL_LINKS=
4581         oss_indev_extralibs="-lossaudio"
4582         oss_outdev_extralibs="-lossaudio"
4583         ;;
4584     dragonfly)
4585         disable symver
4586         ;;
4587     freebsd)
4588         ;;
4589     bsd/os)
4590         add_extralibs -lpoll -lgnugetopt
4591         strip="strip -d"
4592         ;;
4593     darwin)
4594         enabled ppc && add_asflags -force_cpusubtype_ALL
4595         install_name_dir_default='$(SHLIBDIR)'
4596         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4597         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4598         strip="${strip} -x"
4599         add_ldflags -Wl,-dynamic,-search_paths_first
4600         SLIBSUF=".dylib"
4601         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4602         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4603         objformat="macho"
4604         enabled x86_64 && objformat="macho64"
4605         enabled_any pic shared x86_64 ||
4606             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4607         check_header dispatch/dispatch.h
4608         ;;
4609     msys*)
4610         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4611         ;;
4612     mingw32*|mingw64*)
4613         if test $target_os = "mingw32ce"; then
4614             disable network
4615         else
4616             target_os=mingw32
4617         fi
4618         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4619         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4620         LIBTARGET=i386
4621         if enabled x86_64; then
4622             LIBTARGET="i386:x86-64"
4623         elif enabled arm; then
4624             LIBTARGET=arm-wince
4625         fi
4626         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4627         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4628         shlibdir_default="$bindir_default"
4629         SLIBPREF=""
4630         SLIBSUF=".dll"
4631         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4632         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4633         dlltool="${cross_prefix}dlltool"
4634         if check_cmd lib.exe -list; then
4635             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4636             if enabled x86_64; then
4637                 LIBTARGET=x64
4638             fi
4639         elif check_cmd $dlltool --version; then
4640             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4641         fi
4642         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4643         SLIB_INSTALL_LINKS=
4644         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4645         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4646         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4647         objformat="win32"
4648         ranlib=:
4649         enable dos_paths
4650         check_ldflags -Wl,--nxcompat,--dynamicbase
4651         # Lets work around some stupidity in binutils.
4652         # ld will strip relocations from executables even though we need them
4653         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4654         # however ld then forgets what the entry point should be (oops) so we
4655         # have to manually (re)set it.
4656         if enabled x86_32; then
4657             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4658         elif enabled x86_64; then
4659             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4660             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4661             # Set image base >4GB for extra entropy with HEASLR
4662             add_ldexeflags -Wl,--image-base,0x140000000
4663             append SHFLAGS -Wl,--image-base,0x180000000
4664         fi
4665         ;;
4666     win32|win64)
4667         disable symver
4668         if enabled shared; then
4669             # Link to the import library instead of the normal static library
4670             # for shared libs.
4671             LD_LIB='%.lib'
4672             # Cannot build both shared and static libs with MSVC or icl.
4673             disable static
4674         fi
4675         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4676         shlibdir_default="$bindir_default"
4677         SLIBPREF=""
4678         SLIBSUF=".dll"
4679         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4680         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4681         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4682         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4683         SLIB_INSTALL_LINKS=
4684         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4685         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4686         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4687         objformat="win32"
4688         ranlib=:
4689         enable dos_paths
4690         ;;
4691     cygwin*)
4692         target_os=cygwin
4693         shlibdir_default="$bindir_default"
4694         SLIBPREF="cyg"
4695         SLIBSUF=".dll"
4696         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4697         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4698         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4699         SLIB_INSTALL_LINKS=
4700         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4701         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4702         objformat="win32"
4703         enable dos_paths
4704         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4705         ;;
4706     *-dos|freedos|opendos)
4707         network_extralibs="-lsocket"
4708         objformat="coff"
4709         enable dos_paths
4710         add_cppflags -U__STRICT_ANSI__
4711         ;;
4712     linux)
4713         enable dv1394
4714         enable section_data_rel_ro
4715         ;;
4716     irix*)
4717         target_os=irix
4718         ranlib="echo ignoring ranlib"
4719         ;;
4720     os/2*)
4721         strip="lxlite -CS"
4722         objformat="aout"
4723         add_cppflags -D_GNU_SOURCE
4724         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4725         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4726         LIBSUF="_s.a"
4727         SLIBPREF=""
4728         SLIBSUF=".dll"
4729         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4730         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4731         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4732             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4733             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4734             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4735             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4736         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4737             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4738         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4739         SLIB_INSTALL_LINKS=
4740         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4741         enable dos_paths
4742         enable_weak os2threads
4743         ;;
4744     gnu/kfreebsd)
4745         add_cppflags -D_BSD_SOURCE
4746         ;;
4747     gnu)
4748         ;;
4749     qnx)
4750         add_cppflags -D_QNX_SOURCE
4751         network_extralibs="-lsocket"
4752         ;;
4753     symbian)
4754         SLIBSUF=".dll"
4755         enable dos_paths
4756         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4757         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4758         add_ldflags -Wl,--target1-abs,--no-undefined \
4759                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4760                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4761         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4762                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4763                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4764         ;;
4765     osf1)
4766         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4767         ;;
4768     minix)
4769         ;;
4770     plan9)
4771         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4772                      -D_REENTRANT_SOURCE        \
4773                      -D_RESEARCH_SOURCE         \
4774                      -DFD_SETSIZE=96            \
4775                      -DHAVE_SOCK_OPTS
4776         add_compat strtod.o strtod=avpriv_strtod
4777         network_extralibs='-lbsd'
4778         exeobjs=compat/plan9/main.o
4779         disable ffserver
4780         cp_f='cp'
4781         ;;
4782     none)
4783         ;;
4784     *)
4785         die "Unknown OS '$target_os'."
4786         ;;
4787 esac
4788
4789 # test if creating links works
4790 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4791 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4792 mkdir "$link_dest"
4793 $ln_s "$link_dest" "$link_name"
4794 touch "$link_dest/test_file"
4795 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4796     # create link to source path
4797     [ -e src ] && rm src
4798     $ln_s "$source_path" src
4799     source_link=src
4800 else
4801     # creating directory links doesn't work
4802     # fall back to using the full source path
4803     source_link="$source_path"
4804 fi
4805 # cleanup
4806 rm -r "$link_dest"
4807 rm -r "$link_name"
4808
4809 # determine libc flavour
4810
4811 probe_libc(){
4812     pfx=$1
4813     pfx_no_=${pfx%_}
4814     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4815     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4816         eval ${pfx}libc_type=uclibc
4817         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4818     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4819         eval ${pfx}libc_type=glibc
4820         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4821     # MinGW headers can be installed on Cygwin, so check for newlib first.
4822     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4823         eval ${pfx}libc_type=newlib
4824         add_${pfx}cppflags -U__STRICT_ANSI__
4825     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4826     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4827         eval ${pfx}libc_type=mingw64
4828         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4829             add_compat msvcrt/snprintf.o
4830             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4831         fi
4832         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4833         eval test \$${pfx_no_}cc_type = "gcc" &&
4834             add_${pfx}cppflags -D__printf__=__gnu_printf__
4835     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4836          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4837         eval ${pfx}libc_type=mingw32
4838         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4839             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4840             die "ERROR: MinGW32 runtime version must be >= 3.15."
4841         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4842         eval test \$${pfx_no_}cc_type = "gcc" &&
4843             add_${pfx}cppflags -D__printf__=__gnu_printf__
4844     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4845         eval ${pfx}libc_type=msvcrt
4846         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4847             if [ "$pfx" = host_ ]; then
4848                 add_host_cppflags -Dsnprintf=_snprintf
4849             else
4850                 add_compat strtod.o strtod=avpriv_strtod
4851                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4852                                              _snprintf=avpriv_snprintf  \
4853                                              vsnprintf=avpriv_vsnprintf
4854             fi
4855         fi
4856         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4857         # 0x601 by default unless something else is set by the user.
4858         # This can easily lead to us detecting functions only present
4859         # in such new versions and producing binaries requiring windows 7.0.
4860         # Therefore explicitly set the default to XP unless the user has
4861         # set something else on the command line.
4862         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4863         # family. For these cases, configure is free to use any functions
4864         # found in the SDK headers by default. (Alternatively, we could force
4865         # _WIN32_WINNT to 0x0602 in that case.)
4866         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4867             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4868 #ifdef WINAPI_FAMILY
4869 #include <winapifamily.h>
4870 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4871 #error not desktop
4872 #endif
4873 #endif
4874 EOF
4875     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4876         eval ${pfx}libc_type=klibc
4877     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4878         eval ${pfx}libc_type=bionic
4879     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4880         eval ${pfx}libc_type=solaris
4881         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4882     fi
4883     check_${pfx}cc <<EOF
4884 #include <time.h>
4885 void *v = localtime_r;
4886 EOF
4887 test "$?" != 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
4888 #include <time.h>
4889 void *v = localtime_r;
4890 EOF
4891
4892 }
4893
4894 probe_libc
4895 test -n "$libc_type" && enable libc_$libc_type
4896 probe_libc host_
4897 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4898
4899 case $libc_type in
4900     bionic)
4901         add_compat strtod.o strtod=avpriv_strtod
4902         ;;
4903 esac
4904
4905 # hacks for compiler/libc/os combinations
4906
4907 if enabled_all tms470 libc_glibc; then
4908     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4909     add_cppflags -D__USER_LABEL_PREFIX__=
4910     add_cppflags -D__builtin_memset=memset
4911     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4912     add_cflags   -pds=48    # incompatible redefinition of macro
4913 fi
4914
4915 if enabled_all ccc libc_glibc; then
4916     add_ldflags -Wl,-z,now  # calls to libots crash without this
4917 fi
4918
4919 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4920     add_cppflags '-I\$(SRC_PATH)/compat/float'
4921
4922 esc(){
4923     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4924 }
4925
4926 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4927
4928 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4929
4930 set_default libdir
4931 : ${shlibdir_default:="$libdir"}
4932 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4933
4934 set_default $PATHS_LIST
4935 set_default nm
4936
4937 # we need to build at least one lib type
4938 if ! enabled_any static shared; then
4939     cat <<EOF
4940 At least one library type must be built.
4941 Specify --enable-static to build the static libraries or --enable-shared to
4942 build the shared libraries as well. To only build the shared libraries specify
4943 --disable-static in addition to --enable-shared.
4944 EOF
4945     exit 1;
4946 fi
4947
4948 die_license_disabled() {
4949     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4950 }
4951
4952 die_license_disabled_gpl() {
4953     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4954 }
4955
4956 die_license_disabled gpl frei0r
4957 die_license_disabled gpl libcdio
4958 die_license_disabled gpl librubberband
4959 die_license_disabled gpl libsmbclient
4960 die_license_disabled gpl libutvideo
4961 die_license_disabled gpl libvidstab
4962 die_license_disabled gpl libx264
4963 die_license_disabled gpl libx265
4964 die_license_disabled gpl libxavs
4965 die_license_disabled gpl libxvid
4966 die_license_disabled gpl x11grab
4967
4968 die_license_disabled nonfree cuda
4969 die_license_disabled nonfree libfaac
4970 die_license_disabled nonfree libnpp
4971 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4972 enabled gpl && die_license_disabled_gpl nonfree openssl
4973
4974 die_license_disabled version3 gmp
4975 die_license_disabled version3 libopencore_amrnb
4976 die_license_disabled version3 libopencore_amrwb
4977 die_license_disabled version3 libsmbclient
4978 die_license_disabled version3 libvo_amrwbenc
4979
4980 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4981
4982 disabled optimizations || check_cflags -fomit-frame-pointer
4983
4984 enable_weak_pic() {
4985     disabled pic && return
4986     enable pic
4987     add_cppflags -DPIC
4988     case "$target_os" in
4989     mingw*|cygwin*)
4990         ;;
4991     *)
4992         add_cflags -fPIC
4993         ;;
4994     esac
4995     add_asflags  -fPIC
4996 }
4997
4998 enabled pic && enable_weak_pic
4999
5000 check_cc <<EOF || die "Symbol mangling check failed."
5001 int ff_extern;
5002 EOF
5003 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5004 extern_prefix=${sym%%ff_extern*}
5005
5006 check_cc <<EOF && enable_weak inline_asm
5007 void foo(void) { __asm__ volatile ("" ::); }
5008 EOF
5009
5010 _restrict=
5011 for restrict_keyword in restrict __restrict__ __restrict; do
5012     check_cc <<EOF && _restrict=$restrict_keyword && break
5013 void foo(char * $restrict_keyword p);
5014 EOF
5015 done
5016
5017 check_cc <<EOF && enable pragma_deprecated
5018 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5019 EOF
5020
5021 check_cc <<EOF && enable attribute_packed
5022 struct { int x; } __attribute__((packed)) x;
5023 EOF
5024
5025 check_cc <<EOF && enable attribute_may_alias
5026 union { int x; } __attribute__((may_alias)) x;
5027 EOF
5028
5029 check_cc <<EOF || die "endian test failed"
5030 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5031 EOF
5032 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5033
5034 if ! enabled ppc64 || enabled bigendian; then
5035     disable vsx
5036 fi
5037
5038 check_gas() {
5039     log "check_gas using '$as' as AS"
5040     # :vararg is used on aarch64, arm and ppc altivec
5041     check_as <<EOF || return 1
5042 .macro m n, y:vararg=0
5043 \n: .int \y
5044 .endm
5045 m x
5046 EOF
5047     # .altmacro is only used in arm asm
5048     ! enabled arm || check_as <<EOF || return 1
5049 .altmacro
5050 EOF
5051     enable gnu_as
5052     return 0
5053 }
5054
5055 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5056     nogas=:
5057     enabled_any arm aarch64 && nogas=die
5058     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5059     as_noop=-v
5060
5061     case $as_type in
5062         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5063         gcc)  gaspp_as_type=gas ;;
5064         *)    gaspp_as_type=$as_type ;;
5065     esac
5066
5067     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5068
5069     test "${as#*gas-preprocessor.pl}" != "$as" ||
5070     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5071         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5072
5073     if ! check_gas ; then
5074         as=${gas:=$as}
5075         check_gas || \
5076             $nogas "GNU assembler not found, install/update gas-preprocessor"
5077     fi
5078
5079     check_as <<EOF && enable as_func
5080 .func test
5081 .endfunc
5082 EOF
5083 fi
5084
5085 check_inline_asm inline_asm_labels '"1:\n"'
5086
5087 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5088
5089 if enabled aarch64; then
5090     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5091     # internal assembler in clang 3.3 does not support this instruction
5092     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5093     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5094
5095     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5096
5097 elif enabled alpha; then
5098
5099     check_cflags -mieee
5100
5101 elif enabled arm; then
5102
5103     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5104
5105     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5106 float func(float a, float b){ return a+b; }
5107 EOF
5108
5109     enabled thumb && check_cflags -mthumb || check_cflags -marm
5110
5111     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5112         enable vfp_args
5113     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5114         enable vfp_args
5115     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5116         case "${cross_prefix:-$cc}" in
5117             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5118             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5119 __asm__ (".eabi_attribute 28, 1");
5120 int main(void) { return 0; }
5121 EOF
5122         esac
5123         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5124     fi
5125
5126     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5127     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5128     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5129     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5130     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5131     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5132     enabled setend  && check_insn setend  'setend be'
5133
5134     [ $target_os = linux ] || [ $target_os = android ] ||
5135         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5136             $ARCH_EXT_LIST_ARM
5137
5138     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5139
5140     check_as <<EOF && enable as_dn_directive
5141 ra .dn d0.i16
5142 .unreq ra
5143 EOF
5144
5145     # llvm's integrated assembler supports .object_arch from llvm 3.5
5146     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5147 .object_arch armv4
5148 EOF
5149
5150     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5151
5152 elif enabled mips; then
5153
5154     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5155     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5156     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5157
5158     # Enable minimum ISA based on selected options
5159     if enabled mips64; then
5160         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5161         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5162         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5163     else
5164         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5165         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5166         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5167         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5168     fi
5169
5170     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5171     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5172     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5173     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5174     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5175
5176 elif enabled parisc; then
5177
5178     if enabled gcc; then
5179         case $($cc -dumpversion) in
5180             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5181         esac
5182     fi
5183
5184 elif enabled ppc; then
5185
5186     enable local_aligned_8 local_aligned_16 local_aligned_32
5187
5188     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5189     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5190     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5191     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5192
5193     # AltiVec flags: The FSF version of GCC differs from the Apple version
5194     if enabled altivec; then
5195         check_cflags -maltivec -mabi=altivec &&
5196         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5197         check_cflags -faltivec
5198
5199         # check if our compiler supports Motorola AltiVec C API
5200         check_cc <<EOF || disable altivec
5201 $inc_altivec_h
5202 int main(void) {
5203     vector signed int v1 = (vector signed int) { 0 };
5204     vector signed int v2 = (vector signed int) { 1 };
5205     v1 = vec_add(v1, v2);
5206     return 0;
5207 }
5208 EOF
5209
5210         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5211     fi
5212
5213     if enabled vsx; then
5214         check_cflags -mvsx &&
5215         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5216     fi
5217
5218     if enabled power8; then
5219         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5220     fi
5221
5222 elif enabled x86; then
5223
5224     check_builtin rdtsc    intrin.h   "__rdtsc()"
5225     check_builtin mm_empty mmintrin.h "_mm_empty()"
5226
5227     enable local_aligned_8 local_aligned_16 local_aligned_32
5228
5229     # check whether EBP is available on x86
5230     # As 'i' is stored on the stack, this program will crash
5231     # if the base pointer is used to access it because the
5232     # base pointer is cleared in the inline assembly code.
5233     check_exec_crash <<EOF && enable ebp_available
5234 volatile int i=0;
5235 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5236 return i;
5237 EOF
5238
5239     # check whether EBX is available on x86
5240     check_inline_asm ebx_available '""::"b"(0)' &&
5241         check_inline_asm ebx_available '"":::"%ebx"'
5242
5243     # check whether xmm clobbers are supported
5244     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5245
5246     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5247         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5248
5249     # check whether binutils is new enough to compile SSSE3/MMXEXT
5250     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5251     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5252
5253     if ! disabled_any asm mmx yasm; then
5254         if check_cmd $yasmexe --version; then
5255             enabled x86_64 && yasm_extra="-m amd64"
5256             yasm_debug="-g dwarf2"
5257         elif check_cmd nasm -v; then
5258             yasmexe=nasm
5259             yasm_debug="-g -F dwarf"
5260             if enabled x86_64; then
5261                 case "$objformat" in
5262                     elf)   objformat=elf64 ;;
5263                     win32) objformat=win64 ;;
5264                 esac
5265             fi
5266         fi
5267
5268         YASMFLAGS="-f $objformat $yasm_extra"
5269         enabled pic               && append YASMFLAGS "-DPIC"
5270         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5271         case "$objformat" in
5272             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5273         esac
5274
5275         check_yasm "movbe ecx, [5]" && enable yasm ||
5276             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5277         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5278         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5279         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5280         check_yasm "CPU amdnop" || disable cpunop
5281     fi
5282
5283     case "$cpu" in
5284         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5285             disable fast_clz
5286         ;;
5287     esac
5288
5289 fi
5290
5291 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5292
5293 check_ldflags -Wl,--as-needed
5294 check_ldflags -Wl,-z,noexecstack
5295
5296 if check_func dlopen; then
5297     ldl=
5298 elif check_func dlopen -ldl; then
5299     ldl=-ldl
5300 fi
5301
5302 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5303 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5304 frei0r_filter_extralibs='$ldl'
5305 frei0r_src_filter_extralibs='$ldl'
5306 ladspa_filter_extralibs='$ldl'
5307 nvenc_encoder_extralibs='$ldl'
5308 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5309 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5310
5311 if ! disabled network; then
5312     check_func getaddrinfo $network_extralibs
5313     check_func inet_aton $network_extralibs
5314
5315     check_type netdb.h "struct addrinfo"
5316     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5317     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5318     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5319     check_type poll.h "struct pollfd"
5320     check_type netinet/sctp.h "struct sctp_event_subscribe"
5321     check_struct "sys/socket.h" "struct msghdr" msg_flags
5322     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5323     check_type netinet/in.h "struct sockaddr_in6"
5324     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5325     check_type "sys/types.h sys/socket.h" socklen_t
5326
5327     # Prefer arpa/inet.h over winsock2
5328     if check_header arpa/inet.h ; then
5329         check_func closesocket
5330     elif check_header winsock2.h ; then
5331         check_func_headers winsock2.h closesocket -lws2 &&
5332             network_extralibs="-lws2" ||
5333         { check_func_headers winsock2.h closesocket -lws2_32 &&
5334             network_extralibs="-lws2_32"; } || disable winsock2_h network
5335         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5336
5337         check_type ws2tcpip.h socklen_t
5338         check_type ws2tcpip.h "struct addrinfo"
5339         check_type ws2tcpip.h "struct group_source_req"
5340         check_type ws2tcpip.h "struct ip_mreq_source"
5341         check_type ws2tcpip.h "struct ipv6_mreq"
5342         check_type winsock2.h "struct pollfd"
5343         check_struct winsock2.h "struct sockaddr" sa_len
5344         check_type ws2tcpip.h "struct sockaddr_in6"
5345         check_type ws2tcpip.h "struct sockaddr_storage"
5346     else
5347         disable network
5348     fi
5349 fi
5350
5351 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5352 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5353 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5354 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5355 check_builtin sarestart signal.h "SA_RESTART"
5356 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5357 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5358 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5359 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5360
5361 case "$custom_allocator" in
5362     jemalloc)
5363         # jemalloc by default does not use a prefix
5364         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5365     ;;
5366     tcmalloc)
5367         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5368         malloc_prefix=tc_
5369     ;;
5370 esac
5371
5372 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5373 check_func  ${malloc_prefix}memalign            && enable memalign
5374 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5375
5376 check_func  access
5377 check_func  arc4random
5378 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5379 check_func  fcntl
5380 check_func  fork
5381 check_func  gethrtime
5382 check_func  getopt
5383 check_func  getrusage
5384 check_func  gettimeofday
5385 check_func  isatty
5386 check_func  mach_absolute_time
5387 check_func  mkstemp
5388 check_func  mmap
5389 check_func  mprotect
5390 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5391 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5392 check_func  sched_getaffinity
5393 check_func  setrlimit
5394 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5395 check_func  strerror_r
5396 check_func  sysconf
5397 check_func  sysctl
5398 check_func  usleep
5399
5400 check_func_headers conio.h kbhit
5401 check_func_headers io.h setmode
5402 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5403 check_func_headers stdlib.h getenv
5404 check_func_headers sys/stat.h lstat
5405
5406 check_func_headers windows.h CoTaskMemFree -lole32
5407 check_func_headers windows.h GetProcessAffinityMask
5408 check_func_headers windows.h GetProcessTimes
5409 check_func_headers windows.h GetSystemTimeAsFileTime
5410 check_func_headers windows.h MapViewOfFile
5411 check_func_headers windows.h PeekNamedPipe
5412 check_func_headers windows.h SetConsoleTextAttribute
5413 check_func_headers windows.h SetConsoleCtrlHandler
5414 check_func_headers windows.h Sleep
5415 check_func_headers windows.h VirtualAlloc
5416 check_struct windows.h "CONDITION_VARIABLE" Ptr
5417 check_func_headers glob.h glob
5418 enabled xlib &&
5419     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5420
5421 check_header AudioToolbox/AudioToolbox.h
5422 check_header direct.h
5423 check_header dirent.h
5424 check_header dlfcn.h
5425 check_header d3d11.h
5426 check_header dxva.h
5427 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5428 check_header io.h
5429 check_header libcrystalhd/libcrystalhd_if.h
5430 check_header mach/mach_time.h
5431 check_header malloc.h
5432 check_header net/udplite.h
5433 check_header poll.h
5434 check_header sys/mman.h
5435 check_header sys/param.h
5436 check_header sys/resource.h
5437 check_header sys/select.h
5438 check_header sys/time.h
5439 check_header sys/un.h
5440 check_header termios.h
5441 check_header unistd.h
5442 check_header valgrind/valgrind.h
5443 check_header vdpau/vdpau.h
5444 check_header vdpau/vdpau_x11.h
5445 check_header VideoDecodeAcceleration/VDADecoder.h
5446 check_header VideoToolbox/VideoToolbox.h
5447 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5448 check_header windows.h
5449 check_header X11/extensions/XvMClib.h
5450 check_header asm/types.h
5451
5452 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5453 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5454 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5455 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5456
5457 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5458
5459 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5460 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5461 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5462 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5463 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5464
5465 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5466 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5467 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5468
5469 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5470
5471 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5472
5473 if ! disabled w32threads && ! enabled pthreads; then
5474     check_func_headers "windows.h process.h" _beginthreadex &&
5475         enable w32threads || disable w32threads
5476     if ! enabled w32threads && enabled winrt; then
5477         check_func_headers "windows.h" CreateThread &&
5478             enable w32threads || disable w32threads
5479     fi
5480 fi
5481
5482 # check for some common methods of building with pthread support
5483 # do this before the optional library checks as some of them require pthreads
5484 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5485     enable pthreads
5486     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5487         add_cflags -pthread
5488         add_extralibs -pthread
5489     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5490         add_cflags -pthreads
5491         add_extralibs -pthreads
5492     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5493         add_cflags -ldl -pthread
5494         add_extralibs -ldl -pthread
5495     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5496         add_extralibs -lpthreadGC2
5497     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5498         :
5499     elif ! check_func pthread_join && ! check_func pthread_create; then
5500         disable pthreads
5501     fi
5502     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5503 fi
5504
5505
5506 if enabled pthreads; then
5507   check_func pthread_cancel
5508 fi
5509
5510 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5511 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5512 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5513
5514 check_lib math.h sin -lm && LIBM="-lm"
5515 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5516
5517 atan2f_args=2
5518 copysign_args=2
5519 hypot_args=2
5520 ldexpf_args=2
5521 powf_args=2
5522
5523 for func in $MATH_FUNCS; do
5524     eval check_mathfunc $func \${${func}_args:-1}
5525 done
5526
5527 for func in $COMPLEX_FUNCS; do
5528     eval check_complexfunc $func \${${func}_args:-1}
5529 done
5530
5531 # these are off by default, so fail if requested and not available
5532 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5533 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5534                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5535 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5536                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5537                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5538 enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
5539                                die "ERROR: CUDA not found"; }
5540 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5541 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5542 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5543 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5544 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5545 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5546 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5547 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5548                                check_lib2 "dlfcn.h" dlopen -ldl; }
5549 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5550 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5551 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5552 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5553 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5554 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5555                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5556                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5557 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5558 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5559 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5560                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5561                                  warn "using libfdk without pkg-config"; } }
5562 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"
5563 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5564 enabled fontconfig        && enable libfontconfig
5565 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5566 enabled libfreetype       && require_libfreetype
5567 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5568 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5569 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5570                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5571                                done || die "ERROR: libgsm not found"; }
5572 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5573 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5574 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5575 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5576 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5577 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5578 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5579 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5580 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5581 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5582                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5583                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5584                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5585 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5586 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5587                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5588                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5589                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5590                                die "ERROR: libopenjpeg not found"; }
5591 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5592 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5593 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5594 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5595 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5596 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5597 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5598                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5599 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5600 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5601 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5602 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5603 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5604 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5605 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5606                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5607                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5608 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5609 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5610 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5611 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5612 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5613
5614 enabled libvpx            && {
5615     enabled libvpx_vp8_decoder && {
5616         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5617             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5618                 die "ERROR: libvpx decoder version must be >=0.9.1";
5619     }
5620     enabled libvpx_vp8_encoder && {
5621         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5622             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5623                 die "ERROR: libvpx encoder version must be >=0.9.7";
5624     }
5625     enabled libvpx_vp9_decoder && {
5626         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5627             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5628                 disable libvpx_vp9_decoder;
5629     }
5630     enabled libvpx_vp9_encoder && {
5631         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5632             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5633                 disable libvpx_vp9_encoder;
5634     }
5635     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5636         die "libvpx enabled but no supported decoders found"
5637     fi
5638 }
5639
5640 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5641 enabled libwebp           && {
5642     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5643     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5644 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5645                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5646                                  warn "using libx264 without pkg-config"; } } &&
5647                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5648                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5649                              { check_cpp_condition x264.h "X264_MPEG2" &&
5650                                enable libx262; }
5651 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5652                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5653                                die "ERROR: libx265 version must be >= 68."; }
5654 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5655 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5656 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5657 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5658 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5659                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5660                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5661 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5662 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5663                                 { ! enabled cross_compile && {
5664                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5665                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5666                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5667                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5668                                die "ERROR: mmal not found"; }
5669 enabled mmal &&
5670     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5671      die "ERROR: mmal firmware headers too old")
5672
5673 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5674 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5675                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5676                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5677                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5678 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5679                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5680                                die "ERROR: openal not found"; } &&
5681                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5682                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5683 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5684                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5685                                die "ERROR: opencl not found"; } &&
5686                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5687                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5688                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5689 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5690                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5691                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5692                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5693                                die "ERROR: opengl not found."
5694                              }
5695 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5696                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5697                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5698                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5699                                die "ERROR: openssl not found"; }
5700 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5701
5702 # libdc1394 check
5703 if enabled libdc1394; then
5704     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5705         enable libdc1394_2; } ||
5706     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5707         enable libdc1394_1; } ||
5708     die "ERROR: No version of libdc1394 found "
5709 fi
5710
5711 if enabled gcrypt; then
5712     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5713     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5714         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5715         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5716         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5717             die "ERROR: gcrypt not found"
5718         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5719     else
5720         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5721     fi
5722 fi
5723
5724 if ! disabled sdl; then
5725     SDL_CONFIG="${cross_prefix}sdl-config"
5726     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5727         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5728         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5729         enable sdl
5730     else
5731         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5732             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5733             sdl_libs=$("${SDL_CONFIG}" --libs)
5734             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5735             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5736             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5737             enable sdl
5738         elif enabled sdl ; then
5739             die "ERROR: SDL not found"
5740         else
5741             disable sdl
5742         fi
5743     fi
5744     if test $target_os = "mingw32"; then
5745         sdl_libs="$sdl_libs -mconsole"
5746     fi
5747 fi
5748 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5749
5750 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5751     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5752     enable securetransport; }
5753
5754 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5755                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5756
5757 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5758 enabled makeinfo \
5759     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5760     && enable makeinfo_html || disable makeinfo_html
5761 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5762 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5763 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5764 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5765
5766 check_header linux/fb.h
5767 check_header linux/videodev.h
5768 check_header linux/videodev2.h
5769 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5770
5771 check_header sys/videoio.h
5772 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5773
5774 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5775 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5776 # w32api 3.12 had it defined wrong
5777 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5778
5779 check_type "dshow.h" IBaseFilter
5780
5781 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5782 { check_header dev/bktr/ioctl_meteor.h &&
5783   check_header dev/bktr/ioctl_bt848.h; } ||
5784 { check_header machine/ioctl_meteor.h &&
5785   check_header machine/ioctl_bt848.h; } ||
5786 { check_header dev/video/meteor/ioctl_meteor.h &&
5787   check_header dev/video/bktr/ioctl_bt848.h; } ||
5788 check_header dev/ic/bt8xx.h
5789
5790 check_header sndio.h
5791 if check_struct sys/soundcard.h audio_buf_info bytes; then
5792     enable_safe sys/soundcard.h
5793 else
5794     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5795     #include <sys/soundcard.h>
5796     audio_buf_info abc;
5797 EOF
5798 fi
5799 check_header soundcard.h
5800
5801 enabled_any alsa_indev alsa_outdev &&
5802     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5803
5804 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5805     check_func jack_port_get_latency_range -ljack
5806
5807 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5808
5809 if enabled libcdio; then
5810     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5811     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5812     die "ERROR: No usable libcdio/cdparanoia found"
5813 fi
5814
5815 enabled xlib &&
5816     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5817
5818 if ! disabled libxcb; then
5819     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5820         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5821     } && disable x11grab && enable libxcb
5822
5823 if enabled libxcb; then
5824     disabled libxcb_shm || {
5825         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5826             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5827         } && check_header sys/shm.h && enable libxcb_shm; }
5828
5829     disabled libxcb_xfixes || {
5830         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5831             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5832         } && enable libxcb_xfixes; }
5833
5834     disabled libxcb_shape || {
5835         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5836             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5837         } && enable libxcb_shape; }
5838
5839     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5840     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5841 fi
5842 fi
5843
5844 if enabled x11grab; then
5845     enabled xlib || die "ERROR: Xlib not found"
5846     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5847     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5848 fi
5849
5850 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5851
5852 enabled dxva2api_h &&
5853     check_cc <<EOF && enable dxva2api_cobj
5854 #define _WIN32_WINNT 0x0600
5855 #define COBJMACROS
5856 #include <windows.h>
5857 #include <d3d9.h>
5858 #include <dxva2api.h>
5859 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5860 EOF
5861
5862 enabled vaapi &&
5863     check_lib va/va.h vaInitialize -lva ||
5864     disable vaapi
5865
5866 enabled vaapi &&
5867     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5868     disable vaapi
5869
5870 enabled vaapi && enabled xlib &&
5871     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5872     enable vaapi_x11
5873
5874 enabled vdpau &&
5875     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5876     disable vdpau
5877
5878 enabled vdpau && enabled xlib &&
5879     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5880     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5881     enable vdpau_x11
5882
5883 # Funny iconv installations are not unusual, so check it after all flags have been set
5884 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5885
5886 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5887
5888 # add some useful compiler flags if supported
5889 check_cflags -Wdeclaration-after-statement
5890 check_cflags -Wall
5891 check_cflags -Wdisabled-optimization
5892 check_cflags -Wpointer-arith
5893 check_cflags -Wredundant-decls
5894 check_cflags -Wwrite-strings
5895 check_cflags -Wtype-limits
5896 check_cflags -Wundef
5897 check_cflags -Wmissing-prototypes
5898 check_cflags -Wno-pointer-to-int-cast
5899 check_cflags -Wstrict-prototypes
5900 check_cflags -Wempty-body
5901 enabled extra_warnings && check_cflags -Winline
5902 enabled extra_warnings && check_cflags -Wcast-qual
5903
5904 check_disable_warning(){
5905     warning_flag=-W${1#-Wno-}
5906     test_cflags $warning_flag && add_cflags $1
5907 }
5908
5909 check_disable_warning -Wno-parentheses
5910 check_disable_warning -Wno-switch
5911 check_disable_warning -Wno-format-zero-length
5912 check_disable_warning -Wno-pointer-sign
5913 check_disable_warning -Wno-unused-const-variable
5914
5915 # add some linker flags
5916 check_ldflags -Wl,--warn-common
5917 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5918 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5919 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5920 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5921
5922 # add some strip flags
5923 # -wN '..@*' is more selective than -x, but not available everywhere.
5924 check_stripflags -wN \'..@*\' || check_stripflags -x
5925
5926 enabled neon_clobber_test &&
5927     check_ldflags -Wl,--wrap,avcodec_open2              \
5928                   -Wl,--wrap,avcodec_decode_audio4      \
5929                   -Wl,--wrap,avcodec_decode_video2      \
5930                   -Wl,--wrap,avcodec_decode_subtitle2   \
5931                   -Wl,--wrap,avcodec_encode_audio2      \
5932                   -Wl,--wrap,avcodec_encode_video2      \
5933                   -Wl,--wrap,avcodec_encode_subtitle    \
5934                   -Wl,--wrap,swr_convert                \
5935                   -Wl,--wrap,avresample_convert ||
5936     disable neon_clobber_test
5937
5938 enabled xmm_clobber_test &&
5939     check_ldflags -Wl,--wrap,avcodec_open2              \
5940                   -Wl,--wrap,avcodec_decode_audio4      \
5941                   -Wl,--wrap,avcodec_decode_video2      \
5942                   -Wl,--wrap,avcodec_decode_subtitle2   \
5943                   -Wl,--wrap,avcodec_encode_audio2      \
5944                   -Wl,--wrap,avcodec_encode_video2      \
5945                   -Wl,--wrap,avcodec_encode_subtitle    \
5946                   -Wl,--wrap,swr_convert                \
5947                   -Wl,--wrap,avresample_convert         \
5948                   -Wl,--wrap,sws_scale ||
5949     disable xmm_clobber_test
5950
5951 echo "X { local: *; };" > $TMPV
5952 if test_ldflags -Wl,--version-script,$TMPV; then
5953     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5954 elif test_ldflags -Wl,-M,$TMPV; then
5955     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5956 fi
5957
5958 check_cc <<EOF && enable symver_asm_label
5959 void ff_foo(void) __asm__ ("av_foo@VERSION");
5960 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5961 EOF
5962     check_cc <<EOF && enable symver_gnu_asm
5963 __asm__(".symver ff_foo,av_foo@VERSION");
5964 void ff_foo(void) {}
5965 EOF
5966
5967 if [ -z "$optflags" ]; then
5968     if enabled small; then
5969         optflags=$cflags_size
5970     elif enabled optimizations; then
5971         optflags=$cflags_speed
5972     else
5973         optflags=$cflags_noopt
5974     fi
5975 fi
5976
5977 check_optflags(){
5978     check_cflags "$@"
5979     enabled lto && check_ldflags "$@"
5980 }
5981
5982
5983 if enabled lto; then
5984     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5985     check_cflags  -flto
5986     check_ldflags -flto $cpuflags
5987     disable inline_asm_direct_symbol_refs
5988 fi
5989
5990 check_optflags $optflags
5991 check_optflags -fno-math-errno
5992 check_optflags -fno-signed-zeros
5993
5994 enabled ftrapv && check_cflags -ftrapv
5995
5996 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5997 int x;
5998 EOF
5999
6000
6001 if enabled icc; then
6002     # Just warnings, no remarks
6003     check_cflags -w1
6004     # -wd: Disable following warnings
6005     # 144, 167, 556: -Wno-pointer-sign
6006     # 188: enumerated type mixed with another type
6007     # 1292: attribute "foo" ignored
6008     # 1419: external declaration in primary source file
6009     # 10006: ignoring unknown option -fno-signed-zeros
6010     # 10148: ignoring unknown option -Wno-parentheses
6011     # 10156: ignoring option '-W'; no argument required
6012     # 13200: No EMMS instruction before call to function
6013     # 13203: No EMMS instruction before return from function
6014     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6015     # 11030: Warning unknown option --as-needed
6016     # 10156: ignoring option '-export'; no argument required
6017     check_ldflags -wd10156,11030
6018     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6019     enable ebp_available
6020     # The test above does not test linking
6021     enabled lto && disable symver_asm_label
6022     if enabled x86_32; then
6023         icc_version=$($cc -dumpversion)
6024         test ${icc_version%%.*} -ge 11 &&
6025             check_cflags -falign-stack=maintain-16-byte ||
6026             disable aligned_stack
6027     fi
6028 elif enabled ccc; then
6029     # disable some annoying warnings
6030     add_cflags -msg_disable bitnotint
6031     add_cflags -msg_disable mixfuncvoid
6032     add_cflags -msg_disable nonstandcast
6033     add_cflags -msg_disable unsupieee
6034 elif enabled gcc; then
6035     case $gcc_basever in
6036         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
6037         4.*)                 check_optflags -fno-tree-vectorize ;;
6038         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
6039     esac
6040     check_cflags -Werror=format-security
6041     check_cflags -Werror=implicit-function-declaration
6042     check_cflags -Werror=missing-prototypes
6043     check_cflags -Werror=return-type
6044     check_cflags -Werror=vla
6045     check_cflags -Wformat
6046     check_cflags -fdiagnostics-color=auto
6047     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6048 elif enabled llvm_gcc; then
6049     check_cflags -mllvm -stack-alignment=16
6050 elif enabled clang; then
6051     check_cflags -mllvm -stack-alignment=16
6052     check_cflags -Qunused-arguments
6053     check_cflags -Werror=implicit-function-declaration
6054     check_cflags -Werror=missing-prototypes
6055     check_cflags -Werror=return-type
6056 elif enabled cparser; then
6057     add_cflags -Wno-missing-variable-declarations
6058     add_cflags -Wno-empty-statement
6059 elif enabled armcc; then
6060     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6061     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6062     # 2523: use of inline assembly is deprecated
6063     add_cflags -W${armcc_opt},--diag_suppress=2523
6064     add_cflags -W${armcc_opt},--diag_suppress=1207
6065     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6066     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6067     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6068     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6069 elif enabled tms470; then
6070     add_cflags -pds=824 -pds=837
6071     disable inline_asm
6072 elif enabled pathscale; then
6073     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6074 elif enabled_any msvc icl; then
6075     enabled x86_32 && disable aligned_stack
6076     enabled_all x86_32 debug && add_cflags -Oy-
6077     enabled debug && add_ldflags -debug
6078     enable pragma_deprecated
6079     if enabled icl; then
6080         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6081         # (correctly) on icl 13.x.
6082         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6083             add_cflags -Qansi-alias
6084         # Some inline asm is not compilable in debug
6085         if enabled debug; then
6086             disable ebp_available
6087             disable ebx_available
6088         fi
6089     fi
6090     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6091     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6092     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6093     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6094     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6095     # MSVC 2013 and newer can handle it fine.
6096     # If this declspec fails, force including stdlib.h before the restrict redefinition
6097     # happens in config.h.
6098     if [ $_restrict != restrict ]; then
6099         check_cc <<EOF || add_cflags -FIstdlib.h
6100 __declspec($_restrict) void* foo(int);
6101 EOF
6102     fi
6103     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6104 fi
6105
6106 for pfx in "" host_; do
6107     varname=${pfx%_}cc_type
6108     eval "type=\$$varname"
6109     if [ $type = "msvc" ]; then
6110         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6111 static inline int foo(int a) { return a; }
6112 EOF
6113     fi
6114 done
6115
6116 case $as_type in
6117     clang)
6118         add_asflags -Qunused-arguments
6119     ;;
6120 esac
6121
6122 case $ld_type in
6123     clang)
6124         check_ldflags -Qunused-arguments
6125     ;;
6126 esac
6127
6128 case $target_os in
6129     osf1)
6130         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6131     ;;
6132     plan9)
6133         add_cppflags -Dmain=plan9_main
6134     ;;
6135 esac
6136
6137 enable frame_thread_encoder
6138
6139 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6140
6141 check_deps $CONFIG_LIST       \
6142            $CONFIG_EXTRA      \
6143            $HAVE_LIST         \
6144            $ALL_COMPONENTS    \
6145
6146 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"
6147
6148
6149 if test $target_os = "haiku"; then
6150     disable memalign
6151     disable posix_memalign
6152 fi
6153
6154 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6155     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6156     enable dxva2_lib
6157
6158 ! enabled_any memalign posix_memalign aligned_malloc &&
6159     enabled simd_align_16 && enable memalign_hack
6160
6161 # add_dep lib dep
6162 # -> enable ${lib}_deps_${dep}
6163 # -> add $dep to ${lib}_deps only once
6164 add_dep() {
6165     lib=$1
6166     dep=$2
6167     enabled "${lib}_deps_${dep}" && return 0
6168     enable  "${lib}_deps_${dep}"
6169     prepend "${lib}_deps" $dep
6170 }
6171
6172 # merge deps lib components
6173 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6174 merge_deps() {
6175     lib=$1
6176     shift
6177     for comp in $*; do
6178         enabled $comp || continue
6179         eval "dep=\"\$${comp}_deps\""
6180         for d in $dep; do
6181             add_dep $lib $d
6182         done
6183     done
6184 }
6185
6186 merge_deps libavfilter $FILTER_LIST
6187
6188 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6189
6190 for thread in $THREADS_LIST; do
6191     if enabled $thread; then
6192         test -n "$thread_type" &&
6193             die "ERROR: Only one thread type must be selected." ||
6194             thread_type="$thread"
6195     fi
6196 done
6197
6198 enabled zlib && add_cppflags -DZLIB_CONST
6199
6200 # conditional library dependencies, in linking order
6201 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6202 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6203 enabled aresample_filter    && prepend avfilter_deps "swresample"
6204 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6205 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6206 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6207 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6208 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6209 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6210 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6211 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6212 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6213 enabled pan_filter          && prepend avfilter_deps "swresample"
6214 enabled pp_filter           && prepend avfilter_deps "postproc"
6215 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6216 enabled resample_filter && prepend avfilter_deps "avresample"
6217 enabled sab_filter          && prepend avfilter_deps "swscale"
6218 enabled scale_filter    && prepend avfilter_deps "swscale"
6219 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6220 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6221 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6222 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6223 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6224 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6225 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6226 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6227 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6228
6229 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6230
6231 enabled opus_decoder    && prepend avcodec_deps "swresample"
6232
6233 expand_deps(){
6234     lib_deps=${1}_deps
6235     eval "deps=\$$lib_deps"
6236     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6237     unique $lib_deps
6238 }
6239
6240 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6241 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6242
6243 map 'expand_deps $v' $LIBRARY_LIST
6244
6245 echo "install prefix            $prefix"
6246 echo "source path               $source_path"
6247 echo "C compiler                $cc"
6248 echo "C library                 $libc_type"
6249 if test "$host_cc" != "$cc"; then
6250     echo "host C compiler           $host_cc"
6251     echo "host C library            $host_libc_type"
6252 fi
6253 echo "ARCH                      $arch ($cpu)"
6254 if test "$build_suffix" != ""; then
6255     echo "build suffix              $build_suffix"
6256 fi
6257 if test "$progs_suffix" != ""; then
6258     echo "progs suffix              $progs_suffix"
6259 fi
6260 if test "$extra_version" != ""; then
6261     echo "version string suffix     $extra_version"
6262 fi
6263 echo "big-endian                ${bigendian-no}"
6264 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6265 if enabled x86; then
6266     echo "${yasmexe}                      ${yasm-no}"
6267     echo "MMX enabled               ${mmx-no}"
6268     echo "MMXEXT enabled            ${mmxext-no}"
6269     echo "3DNow! enabled            ${amd3dnow-no}"
6270     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6271     echo "SSE enabled               ${sse-no}"
6272     echo "SSSE3 enabled             ${ssse3-no}"
6273     echo "AESNI enabled             ${aesni-no}"
6274     echo "AVX enabled               ${avx-no}"
6275     echo "XOP enabled               ${xop-no}"
6276     echo "FMA3 enabled              ${fma3-no}"
6277     echo "FMA4 enabled              ${fma4-no}"
6278     echo "i686 features enabled     ${i686-no}"
6279     echo "CMOV is fast              ${fast_cmov-no}"
6280     echo "EBX available             ${ebx_available-no}"
6281     echo "EBP available             ${ebp_available-no}"
6282 fi
6283 if enabled aarch64; then
6284     echo "NEON enabled              ${neon-no}"
6285     echo "VFP enabled               ${vfp-no}"
6286 fi
6287 if enabled arm; then
6288     echo "ARMv5TE enabled           ${armv5te-no}"
6289     echo "ARMv6 enabled             ${armv6-no}"
6290     echo "ARMv6T2 enabled           ${armv6t2-no}"
6291     echo "VFP enabled               ${vfp-no}"
6292     echo "NEON enabled              ${neon-no}"
6293     echo "THUMB enabled             ${thumb-no}"
6294 fi
6295 if enabled mips; then
6296     echo "MIPS FPU enabled          ${mipsfpu-no}"
6297     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6298     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6299     echo "MIPS MSA enabled          ${msa-no}"
6300     echo "LOONGSON MMI enabled      ${mmi-no}"
6301 fi
6302 if enabled ppc; then
6303     echo "AltiVec enabled           ${altivec-no}"
6304     echo "VSX enabled               ${vsx-no}"
6305     echo "POWER8 enabled            ${power8-no}"
6306     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6307     echo "dcbzl available           ${dcbzl-no}"
6308 fi
6309 echo "debug symbols             ${debug-no}"
6310 echo "strip symbols             ${stripping-no}"
6311 echo "optimize for size         ${small-no}"
6312 echo "optimizations             ${optimizations-no}"
6313 echo "static                    ${static-no}"
6314 echo "shared                    ${shared-no}"
6315 echo "postprocessing support    ${postproc-no}"
6316 echo "new filter support        ${avfilter-no}"
6317 echo "network support           ${network-no}"
6318 echo "threading support         ${thread_type-no}"
6319 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6320 echo "SDL support               ${sdl-no}"
6321 echo "opencl enabled            ${opencl-no}"
6322 echo "JNI support               ${jni-no}"
6323 echo "texi2html enabled         ${texi2html-no}"
6324 echo "perl enabled              ${perl-no}"
6325 echo "pod2man enabled           ${pod2man-no}"
6326 echo "makeinfo enabled          ${makeinfo-no}"
6327 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6328 test -n "$random_seed" &&
6329     echo "random seed               ${random_seed}"
6330 echo
6331
6332 echo "Enabled programs:"
6333 print_enabled '' $PROGRAM_LIST | print_in_columns
6334 echo
6335
6336 echo "External libraries:"
6337 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6338 echo
6339
6340 echo "Libraries:"
6341 print_enabled '' $LIBRARY_LIST | print_in_columns
6342 echo
6343
6344 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6345     echo "Enabled ${type}s:"
6346     eval list=\$$(toupper $type)_LIST
6347     print_enabled '_*' $list | print_in_columns
6348     echo
6349 done
6350
6351 license="LGPL version 2.1 or later"
6352 if enabled nonfree; then
6353     license="nonfree and unredistributable"
6354 elif enabled gplv3; then
6355     license="GPL version 3 or later"
6356 elif enabled lgplv3; then
6357     license="LGPL version 3 or later"
6358 elif enabled gpl; then
6359     license="GPL version 2 or later"
6360 fi
6361
6362 echo "License: $license"
6363
6364 echo "Creating config.mak, config.h, and doc/config.texi..."
6365
6366 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6367
6368 enabled stripping || strip="echo skipping strip"
6369
6370 config_files="$TMPH config.mak doc/config.texi"
6371
6372 cat > config.mak <<EOF
6373 # Automatically generated by configure - do not modify!
6374 ifndef FFMPEG_CONFIG_MAK
6375 FFMPEG_CONFIG_MAK=1
6376 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6377 prefix=$prefix
6378 LIBDIR=\$(DESTDIR)$libdir
6379 SHLIBDIR=\$(DESTDIR)$shlibdir
6380 INCDIR=\$(DESTDIR)$incdir
6381 BINDIR=\$(DESTDIR)$bindir
6382 DATADIR=\$(DESTDIR)$datadir
6383 DOCDIR=\$(DESTDIR)$docdir
6384 MANDIR=\$(DESTDIR)$mandir
6385 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6386 INSTALL_NAME_DIR=$install_name_dir
6387 SRC_PATH=$source_path
6388 SRC_LINK=$source_link
6389 ifndef MAIN_MAKEFILE
6390 SRC_PATH:=\$(SRC_PATH:.%=..%)
6391 endif
6392 CC_IDENT=$cc_ident
6393 ARCH=$arch
6394 INTRINSICS=$intrinsics
6395 CC=$cc
6396 CXX=$cxx
6397 AS=$as
6398 OBJCC=$objcc
6399 LD=$ld
6400 DEPCC=$dep_cc
6401 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6402 DEPAS=$as
6403 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6404 YASM=$yasmexe
6405 DEPYASM=$yasmexe
6406 AR=$ar
6407 ARFLAGS=$arflags
6408 AR_O=$ar_o
6409 RANLIB=$ranlib
6410 STRIP=$strip
6411 CP=cp -p
6412 LN_S=$ln_s
6413 CPPFLAGS=$CPPFLAGS
6414 CFLAGS=$CFLAGS
6415 CXXFLAGS=$CXXFLAGS
6416 OBJCFLAGS=$OBJCFLAGS
6417 ASFLAGS=$ASFLAGS
6418 AS_C=$AS_C
6419 AS_O=$AS_O
6420 OBJCC_C=$OBJCC_C
6421 OBJCC_E=$OBJCC_E
6422 OBJCC_O=$OBJCC_O
6423 CC_C=$CC_C
6424 CC_E=$CC_E
6425 CC_O=$CC_O
6426 CXX_C=$CXX_C
6427 CXX_O=$CXX_O
6428 LD_O=$LD_O
6429 LD_LIB=$LD_LIB
6430 LD_PATH=$LD_PATH
6431 DLLTOOL=$dlltool
6432 WINDRES=$windres
6433 DEPWINDRES=$dep_cc
6434 DOXYGEN=$doxygen
6435 LDFLAGS=$LDFLAGS
6436 LDEXEFLAGS=$LDEXEFLAGS
6437 LDLIBFLAGS=$LDLIBFLAGS
6438 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6439 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6440 YASMFLAGS=$YASMFLAGS
6441 BUILDSUF=$build_suffix
6442 PROGSSUF=$progs_suffix
6443 FULLNAME=$FULLNAME
6444 LIBPREF=$LIBPREF
6445 LIBSUF=$LIBSUF
6446 LIBNAME=$LIBNAME
6447 SLIBPREF=$SLIBPREF
6448 SLIBSUF=$SLIBSUF
6449 EXESUF=$EXESUF
6450 EXTRA_VERSION=$extra_version
6451 CCDEP=$CCDEP
6452 CXXDEP=$CXXDEP
6453 CCDEP_FLAGS=$CCDEP_FLAGS
6454 ASDEP=$ASDEP
6455 ASDEP_FLAGS=$ASDEP_FLAGS
6456 CC_DEPFLAGS=$CC_DEPFLAGS
6457 AS_DEPFLAGS=$AS_DEPFLAGS
6458 HOSTCC=$host_cc
6459 HOSTLD=$host_ld
6460 HOSTCFLAGS=$host_cflags
6461 HOSTCPPFLAGS=$host_cppflags
6462 HOSTEXESUF=$HOSTEXESUF
6463 HOSTLDFLAGS=$host_ldflags
6464 HOSTLIBS=$host_libs
6465 DEPHOSTCC=$host_cc
6466 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6467 HOSTCCDEP=$HOSTCCDEP
6468 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6469 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6470 HOSTCC_C=$HOSTCC_C
6471 HOSTCC_O=$HOSTCC_O
6472 HOSTLD_O=$HOSTLD_O
6473 TARGET_EXEC=$target_exec $target_exec_args
6474 TARGET_PATH=$target_path
6475 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6476 CFLAGS-ffplay=$sdl_cflags
6477 ZLIB=$($ldflags_filter -lz)
6478 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6479 EXTRALIBS=$extralibs
6480 COMPAT_OBJS=$compat_objs
6481 EXEOBJS=$exeobjs
6482 INSTALL=$install
6483 LIBTARGET=${LIBTARGET}
6484 SLIBNAME=${SLIBNAME}
6485 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6486 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6487 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6488 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6489 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6490 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6491 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6492 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6493 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6494 NOREDZONE_FLAGS=$noredzone_flags
6495 EOF
6496
6497 get_version(){
6498     lcname=lib${1}
6499     name=$(toupper $lcname)
6500     file=$source_path/$lcname/version.h
6501     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6502     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6503     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6504     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6505     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6506     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6507 }
6508
6509 map 'get_version $v' $LIBRARY_LIST
6510
6511 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6512
6513 print_program_libs(){
6514     eval "program_libs=\$${1}_libs"
6515     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6516 }
6517
6518 map 'print_program_libs $v' $PROGRAM_LIST
6519
6520 cat > $TMPH <<EOF
6521 /* Automatically generated by configure - do not modify! */
6522 #ifndef FFMPEG_CONFIG_H
6523 #define FFMPEG_CONFIG_H
6524 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6525 #define FFMPEG_LICENSE "$(c_escape $license)"
6526 #define CONFIG_THIS_YEAR 2016
6527 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6528 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6529 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6530 #define av_restrict $_restrict
6531 #define EXTERN_PREFIX "${extern_prefix}"
6532 #define EXTERN_ASM ${extern_prefix}
6533 #define BUILDSUF "$build_suffix"
6534 #define SLIBSUF "$SLIBSUF"
6535 #define HAVE_MMX2 HAVE_MMXEXT
6536 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6537 EOF
6538
6539 test -n "$assert_level" &&
6540     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6541
6542 test -n "$malloc_prefix" &&
6543     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6544
6545 if enabled yasm; then
6546     append config_files $TMPASM
6547     printf '' >$TMPASM
6548 fi
6549
6550 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6551
6552
6553 mkdir -p doc
6554 mkdir -p tests
6555 mkdir -p tests/api
6556 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6557
6558 print_config ARCH_   "$config_files" $ARCH_LIST
6559 print_config HAVE_   "$config_files" $HAVE_LIST
6560 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6561                                      $CONFIG_EXTRA      \
6562                                      $ALL_COMPONENTS    \
6563
6564 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6565 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6566
6567 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6568 cp_if_changed $TMPH config.h
6569 touch .config
6570
6571 enabled yasm && cp_if_changed $TMPASM config.asm
6572
6573 cat > $TMPH <<EOF
6574 /* Generated by ffconf */
6575 #ifndef AVUTIL_AVCONFIG_H
6576 #define AVUTIL_AVCONFIG_H
6577 EOF
6578
6579 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6580
6581 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6582
6583 cp_if_changed $TMPH libavutil/avconfig.h
6584
6585 if test -n "$WARNINGS"; then
6586     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6587     enabled fatal_warnings && exit 1
6588 fi
6589
6590 # build pkg-config files
6591
6592 lib_version(){
6593     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6594 }
6595
6596 pkgconfig_generate(){
6597     name=$1
6598     shortname=${name#lib}${build_suffix}
6599     comment=$2
6600     version=$3
6601     libs=$4
6602     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6603     requires=${requires%, }
6604     enabled ${name#lib} || return 0
6605     mkdir -p $name
6606     cat <<EOF > $name/$name${build_suffix}.pc
6607 prefix=$prefix
6608 exec_prefix=\${prefix}
6609 libdir=$libdir
6610 includedir=$incdir
6611
6612 Name: $name
6613 Description: $comment
6614 Version: $version
6615 Requires: $(enabled shared || echo $requires)
6616 Requires.private: $(enabled shared && echo $requires)
6617 Conflicts:
6618 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6619 Libs.private: $(enabled shared && echo $libs)
6620 Cflags: -I\${includedir}
6621 EOF
6622
6623 mkdir -p doc/examples/pc-uninstalled
6624 includedir=${source_path}
6625 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6626     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6627 prefix=
6628 exec_prefix=
6629 libdir=\${pcfiledir}/../../../$name
6630 includedir=${includedir}
6631
6632 Name: $name
6633 Description: $comment
6634 Version: $version
6635 Requires: $requires
6636 Conflicts:
6637 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6638 Cflags: -I\${includedir}
6639 EOF
6640 }
6641
6642 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6643 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6644 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6645 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6646 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6647 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6648 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6649 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6650 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"