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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-avutil         disable libavutil 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   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 200   --enable-frei0r          enable frei0r video filtering [no]
 201   --enable-gnutls          enable gnutls, needed for https support
 202                            if openssl is not used [no]
 203   --disable-iconv          disable iconv [autodetect]
 204   --enable-ladspa          enable LADSPA audio filtering [no]
 205   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 206   --enable-libass          enable libass subtitles rendering,
 207                            needed for subtitles and ass filter [no]
 208   --enable-libbluray       enable BluRay reading using libbluray [no]
 209   --enable-libbs2b         enable bs2b DSP library [no]
 210   --enable-libcaca         enable textual display using libcaca [no]
 211   --enable-libcelt         enable CELT decoding via libcelt [no]
 212   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 213   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 214                            and libraw1394 [no]
 215   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 216   --enable-libfaac         enable AAC encoding via libfaac [no]
 217   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 218   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 219   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 220   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 221   --enable-libgme          enable Game Music Emu via libgme [no]
 222   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 223   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 224   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 225   --enable-libmfx          enable HW acceleration through libmfx
 226   --enable-libmodplug      enable ModPlug via libmodplug [no]
 227   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 228   --enable-libnut          enable NUT (de)muxing via libnut,
 229                            native (de)muxer exists [no]
 230   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 231   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 232   --enable-libopencv       enable video filtering via libopencv [no]
 233   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 234   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 235   --enable-libopus         enable Opus de/encoding via libopus [no]
 236   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 237   --enable-libquvi         enable quvi input via libquvi [no]
 238   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 239   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 240   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 241   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 242   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 243   --enable-libsoxr         enable Include libsoxr resampling [no]
 244   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 245   --enable-libssh          enable SFTP protocol via libssh [no]
 246   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 247   --enable-libtheora       enable Theora encoding via libtheora [no]
 248   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 249   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 250   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 251   --enable-libvidstab      enable video stabilization using vid.stab [no]
 252   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 253   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 254   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 255                            native implementation exists [no]
 256   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 257   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 258   --enable-libwebp         enable WebP encoding via libwebp [no]
 259   --enable-libx264         enable H.264 encoding via x264 [no]
 260   --enable-libx265         enable HEVC encoding via x265 [no]
 261   --enable-libxavs         enable AVS encoding via xavs [no]
 262   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 263   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 264   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 265   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 266   --enable-libxvid         enable Xvid encoding via xvidcore,
 267                            native MPEG-4/Xvid encoder exists [no]
 268   --enable-libzmq          enable message passing via libzmq [no]
 269   --enable-libzvbi         enable teletext support via libzvbi [no]
 270   --disable-lzma           disable lzma [autodetect]
 271   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 272   --enable-mmal            enable decoding via MMAL [no]
 273   --enable-nvenc           enable NVIDIA NVENC support [no]
 274   --enable-openal          enable OpenAL 1.1 capture support [no]
 275   --enable-opencl          enable OpenCL code
 276   --enable-opengl          enable OpenGL rendering [no]
 277   --enable-openssl         enable openssl, needed for https support
 278                            if gnutls is not used [no]
 279   --disable-sdl            disable sdl [autodetect]
 280   --disable-securetransport disable Secure Transport, needed for TLS support
 281                            on OSX if openssl and gnutls are not used [autodetect]
 282   --enable-x11grab         enable X11 grabbing (legacy) [no]
 283   --disable-xlib           disable xlib [autodetect]
 284   --disable-zlib           disable zlib [autodetect]
 285
 286 Toolchain options:
 287   --arch=ARCH              select architecture [$arch]
 288   --cpu=CPU                select the minimum required CPU (affects
 289                            instruction selection, may crash on older CPUs)
 290   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 291   --progs-suffix=SUFFIX    program name suffix []
 292   --enable-cross-compile   assume a cross-compiler is used
 293   --sysroot=PATH           root of cross-build tree
 294   --sysinclude=PATH        location of cross-build system headers
 295   --target-os=OS           compiler targets OS [$target_os]
 296   --target-exec=CMD        command to run executables on target
 297   --target-path=DIR        path to view of build directory on target
 298   --target-samples=DIR     path to samples directory on target
 299   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 300   --toolchain=NAME         set tool defaults according to NAME
 301   --nm=NM                  use nm tool NM [$nm_default]
 302   --ar=AR                  use archive tool AR [$ar_default]
 303   --as=AS                  use assembler AS [$as_default]
 304   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 305   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 306   --cc=CC                  use C compiler CC [$cc_default]
 307   --cxx=CXX                use C compiler CXX [$cxx_default]
 308   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 309   --ld=LD                  use linker LD [$ld_default]
 310   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 311   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 312   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 313   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 314   --host-cc=HOSTCC         use host C compiler HOSTCC
 315   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 316   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 317   --host-ld=HOSTLD         use host linker HOSTLD
 318   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 319   --host-libs=HLIBS        use libs HLIBS when linking for host
 320   --host-os=OS             compiler host OS [$target_os]
 321   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 322   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 323   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 324   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 325   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 326   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 327   --extra-version=STRING   version string suffix []
 328   --optflags=OPTFLAGS      override optimization-related compiler flags
 329   --build-suffix=SUFFIX    library name suffix []
 330   --enable-pic             build position-independent code
 331   --enable-thumb           compile for Thumb instruction set
 332   --enable-lto             use link-time optimization
 333   --env="ENV=override"     override the environment variables
 334
 335 Advanced options (experts only):
 336   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 337   --disable-symver         disable symbol versioning
 338   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 339   --disable-safe-bitstream-reader
 340                            disable buffer boundary checking in bitreaders
 341                            (faster, but may crash)
 342   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 343   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 344
 345 Optimization options (experts only):
 346   --disable-asm            disable all assembly optimizations
 347   --disable-altivec        disable AltiVec optimizations
 348   --disable-vsx            disable VSX optimizations
 349   --disable-power8         disable POWER8 optimizations
 350   --disable-amd3dnow       disable 3DNow! optimizations
 351   --disable-amd3dnowext    disable 3DNow! extended optimizations
 352   --disable-mmx            disable MMX optimizations
 353   --disable-mmxext         disable MMXEXT optimizations
 354   --disable-sse            disable SSE optimizations
 355   --disable-sse2           disable SSE2 optimizations
 356   --disable-sse3           disable SSE3 optimizations
 357   --disable-ssse3          disable SSSE3 optimizations
 358   --disable-sse4           disable SSE4 optimizations
 359   --disable-sse42          disable SSE4.2 optimizations
 360   --disable-avx            disable AVX optimizations
 361   --disable-xop            disable XOP optimizations
 362   --disable-fma3           disable FMA3 optimizations
 363   --disable-fma4           disable FMA4 optimizations
 364   --disable-avx2           disable AVX2 optimizations
 365   --disable-armv5te        disable armv5te optimizations
 366   --disable-armv6          disable armv6 optimizations
 367   --disable-armv6t2        disable armv6t2 optimizations
 368   --disable-vfp            disable VFP optimizations
 369   --disable-neon           disable NEON optimizations
 370   --disable-inline-asm     disable use of inline assembly
 371   --disable-yasm           disable use of nasm/yasm assembly
 372   --disable-mips32r5       disable MIPS32R5 optimizations
 373   --disable-mips64r6       disable MIPS64R6 optimizations
 374   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 375   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 376   --disable-msa            disable MSA optimizations
 377   --disable-mipsfpu        disable floating point MIPS optimizations
 378   --disable-mmi            disable Loongson SIMD optimizations
 379   --disable-fast-unaligned consider unaligned accesses slow
 380
 381 Developer options (useful when working on FFmpeg itself):
 382   --disable-debug          disable debugging symbols
 383   --enable-debug=LEVEL     set the debug level [$debuglevel]
 384   --disable-optimizations  disable compiler optimizations
 385   --enable-extra-warnings  enable more compiler warnings
 386   --disable-stripping      disable stripping of executables and shared libraries
 387   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 388                            2 causes a slowdown at runtime.
 389   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 390   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 391                            leaks and errors, using the specified valgrind binary.
 392                            Cannot be combined with --target-exec
 393   --enable-ftrapv          Trap arithmetic overflows
 394   --samples=PATH           location of test samples for FATE, if not set use
 395                            \$FATE_SAMPLES at make invocation time.
 396   --enable-neon-clobber-test check NEON registers for clobbering (should be
 397                            used only for debugging purposes)
 398   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 399                            should be used only for debugging purposes)
 400   --enable-random          randomly enable/disable components
 401   --disable-random
 402   --enable-random=LIST     randomly enable/disable specific components or
 403   --disable-random=LIST    component groups. LIST is a comma-separated list
 404                            of NAME[:PROB] entries where NAME is a component
 405                            (group) and PROB the probability associated with
 406                            NAME (default 0.5).
 407   --random-seed=VALUE      seed value for --enable/disable-random
 408   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 409                            (only applies to --disable-optimizations builds)
 410
 411 NOTE: Object files are built at the place where configure is launched.
 412 EOF
 413   exit 0
 414 }
 415
 416 quotes='""'
 417
 418 log(){
 419     echo "$@" >> $logfile
 420 }
 421
 422 log_file(){
 423     log BEGIN $1
 424     pr -n -t $1 >> $logfile
 425     log END $1
 426 }
 427
 428 echolog(){
 429     log "$@"
 430     echo "$@"
 431 }
 432
 433 warn(){
 434     log "WARNING: $*"
 435     WARNINGS="${WARNINGS}WARNING: $*\n"
 436 }
 437
 438 die(){
 439     echolog "$@"
 440     cat <<EOF
 441
 442 If you think configure made a mistake, make sure you are using the latest
 443 version from Git.  If the latest version fails, report the problem to the
 444 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 445 EOF
 446     if disabled logging; then
 447         cat <<EOF
 448 Rerun configure with logging enabled (do not use --disable-logging), and
 449 include the log this produces with your report.
 450 EOF
 451     else
 452         cat <<EOF
 453 Include the log file "$logfile" produced by configure as this will help
 454 solve the problem.
 455 EOF
 456     fi
 457     exit 1
 458 }
 459
 460 # Avoid locale weirdness, besides we really just want to translate ASCII.
 461 toupper(){
 462     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 463 }
 464
 465 tolower(){
 466     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 467 }
 468
 469 c_escape(){
 470     echo "$*" | sed 's/["\\]/\\\0/g'
 471 }
 472
 473 sh_quote(){
 474     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 475     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 476     echo "$v"
 477 }
 478
 479 cleanws(){
 480     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 481 }
 482
 483 filter(){
 484     pat=$1
 485     shift
 486     for v; do
 487         eval "case $v in $pat) echo $v ;; esac"
 488     done
 489 }
 490
 491 filter_out(){
 492     pat=$1
 493     shift
 494     for v; do
 495         eval "case $v in $pat) ;; *) echo $v ;; esac"
 496     done
 497 }
 498
 499 map(){
 500     m=$1
 501     shift
 502     for v; do eval $m; done
 503 }
 504
 505 add_suffix(){
 506     suffix=$1
 507     shift
 508     for v; do echo ${v}${suffix}; done
 509 }
 510
 511 set_all(){
 512     value=$1
 513     shift
 514     for var in $*; do
 515         eval $var=$value
 516     done
 517 }
 518
 519 set_weak(){
 520     value=$1
 521     shift
 522     for var; do
 523         eval : \${$var:=$value}
 524     done
 525 }
 526
 527 sanitize_var_name(){
 528     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 529 }
 530
 531 set_safe(){
 532     var=$1
 533     shift
 534     eval $(sanitize_var_name "$var")='$*'
 535 }
 536
 537 get_safe(){
 538     eval echo \$$(sanitize_var_name "$1")
 539 }
 540
 541 pushvar(){
 542     for pvar in $*; do
 543         eval level=\${${pvar}_level:=0}
 544         eval ${pvar}_${level}="\$$pvar"
 545         eval ${pvar}_level=$(($level+1))
 546     done
 547 }
 548
 549 popvar(){
 550     for pvar in $*; do
 551         eval level=\${${pvar}_level:-0}
 552         test $level = 0 && continue
 553         eval level=$(($level-1))
 554         eval $pvar="\${${pvar}_${level}}"
 555         eval ${pvar}_level=$level
 556         eval unset ${pvar}_${level}
 557     done
 558 }
 559
 560 enable(){
 561     set_all yes $*
 562 }
 563
 564 disable(){
 565     set_all no $*
 566 }
 567
 568 enable_weak(){
 569     set_weak yes $*
 570 }
 571
 572 disable_weak(){
 573     set_weak no $*
 574 }
 575
 576 enable_safe(){
 577     for var; do
 578         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 579     done
 580 }
 581
 582 disable_safe(){
 583     for var; do
 584         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 585     done
 586 }
 587
 588 do_enable_deep(){
 589     for var; do
 590         enabled $var && continue
 591         eval sel="\$${var}_select"
 592         eval sgs="\$${var}_suggest"
 593         pushvar var sgs
 594         enable_deep $sel
 595         popvar sgs
 596         enable_deep_weak $sgs
 597         popvar var
 598     done
 599 }
 600
 601 enable_deep(){
 602     do_enable_deep $*
 603     enable $*
 604 }
 605
 606 enable_deep_weak(){
 607     for var; do
 608         disabled $var && continue
 609         pushvar var
 610         do_enable_deep $var
 611         popvar var
 612         enable_weak $var
 613     done
 614 }
 615
 616 enabled(){
 617     test "${1#!}" = "$1" && op== || op=!=
 618     eval test "x\$${1#!}" $op "xyes"
 619 }
 620
 621 disabled(){
 622     test "${1#!}" = "$1" && op== || op=!=
 623     eval test "x\$${1#!}" $op "xno"
 624 }
 625
 626 enabled_all(){
 627     for opt; do
 628         enabled $opt || return 1
 629     done
 630 }
 631
 632 disabled_all(){
 633     for opt; do
 634         disabled $opt || return 1
 635     done
 636 }
 637
 638 enabled_any(){
 639     for opt; do
 640         enabled $opt && return 0
 641     done
 642 }
 643
 644 disabled_any(){
 645     for opt; do
 646         disabled $opt && return 0
 647     done
 648     return 1
 649 }
 650
 651 set_default(){
 652     for opt; do
 653         eval : \${$opt:=\$${opt}_default}
 654     done
 655 }
 656
 657 is_in(){
 658     value=$1
 659     shift
 660     for var in $*; do
 661         [ $var = $value ] && return 0
 662     done
 663     return 1
 664 }
 665
 666 do_check_deps(){
 667     for cfg; do
 668         cfg="${cfg#!}"
 669         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 670         disabled ${cfg}_checking && continue
 671         enable ${cfg}_checking
 672         append allopts $cfg
 673
 674         eval dep_all="\$${cfg}_deps"
 675         eval dep_any="\$${cfg}_deps_any"
 676         eval dep_sel="\$${cfg}_select"
 677         eval dep_sgs="\$${cfg}_suggest"
 678         eval dep_ifa="\$${cfg}_if"
 679         eval dep_ifn="\$${cfg}_if_any"
 680
 681         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 682         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 683         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 684
 685         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 686         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 687         enabled_all  $dep_all || disable $cfg
 688         enabled_any  $dep_any || disable $cfg
 689         disabled_any $dep_sel && disable $cfg
 690
 691         if enabled $cfg; then
 692             enable_deep $dep_sel
 693             enable_deep_weak $dep_sgs
 694         fi
 695
 696         disable ${cfg}_checking
 697     done
 698 }
 699
 700 check_deps(){
 701     unset allopts
 702
 703     do_check_deps "$@"
 704
 705     for cfg in $allopts; do
 706         enabled $cfg || continue
 707         eval dep_extralibs="\$${cfg}_extralibs"
 708         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 709     done
 710 }
 711
 712 print_config(){
 713     pfx=$1
 714     files=$2
 715     shift 2
 716     map 'eval echo "$v \${$v:-no}"' "$@" |
 717     awk "BEGIN { split(\"$files\", files) }
 718         {
 719             c = \"$pfx\" toupper(\$1);
 720             v = \$2;
 721             sub(/yes/, 1, v);
 722             sub(/no/,  0, v);
 723             for (f in files) {
 724                 file = files[f];
 725                 if (file ~ /\\.h\$/) {
 726                     printf(\"#define %s %d\\n\", c, v) >>file;
 727                 } else if (file ~ /\\.asm\$/) {
 728                     printf(\"%%define %s %d\\n\", c, v) >>file;
 729                 } else if (file ~ /\\.mak\$/) {
 730                     n = -v ? \"\" : \"!\";
 731                     printf(\"%s%s=yes\\n\", n, c) >>file;
 732                 } else if (file ~ /\\.texi\$/) {
 733                     pre = -v ? \"\" : \"@c \";
 734                     yesno = \$2;
 735                     c2 = tolower(c);
 736                     gsub(/_/, \"-\", c2);
 737                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 738                 }
 739             }
 740         }"
 741 }
 742
 743 print_enabled(){
 744     suf=$1
 745     shift
 746     for v; do
 747         enabled $v && printf "%s\n" ${v%$suf};
 748     done
 749 }
 750
 751 append(){
 752     var=$1
 753     shift
 754     eval "$var=\"\$$var $*\""
 755 }
 756
 757 prepend(){
 758     var=$1
 759     shift
 760     eval "$var=\"$* \$$var\""
 761 }
 762
 763 unique(){
 764     var=$1
 765     uniq_list=""
 766     for tok in $(eval echo \$$var); do
 767         uniq_list="$(filter_out $tok $uniq_list) $tok"
 768     done
 769     eval "$var=\"${uniq_list}\""
 770 }
 771
 772 add_cppflags(){
 773     append CPPFLAGS "$@"
 774 }
 775
 776 add_cflags(){
 777     append CFLAGS $($cflags_filter "$@")
 778 }
 779
 780 add_cxxflags(){
 781     append CXXFLAGS $($cflags_filter "$@")
 782 }
 783
 784 add_asflags(){
 785     append ASFLAGS $($asflags_filter "$@")
 786 }
 787
 788 add_ldflags(){
 789     append LDFLAGS $($ldflags_filter "$@")
 790 }
 791
 792 add_ldexeflags(){
 793     append LDEXEFLAGS $($ldflags_filter "$@")
 794 }
 795
 796 add_ldlibflags(){
 797     append LDLIBFLAGS $($ldflags_filter "$@")
 798 }
 799
 800 add_stripflags(){
 801     append ASMSTRIPFLAGS "$@"
 802 }
 803
 804 add_extralibs(){
 805     prepend extralibs $($ldflags_filter "$@")
 806 }
 807
 808 add_host_cppflags(){
 809     append host_cppflags "$@"
 810 }
 811
 812 add_host_cflags(){
 813     append host_cflags $($host_cflags_filter "$@")
 814 }
 815
 816 add_host_ldflags(){
 817     append host_ldflags $($host_ldflags_filter "$@")
 818 }
 819
 820 add_compat(){
 821     append compat_objs $1
 822     shift
 823     map 'add_cppflags -D$v' "$@"
 824 }
 825
 826 check_cmd(){
 827     log "$@"
 828     "$@" >> $logfile 2>&1
 829 }
 830
 831 check_stat(){
 832     log check_stat "$@"
 833     stat "$1" >> $logfile 2>&1
 834 }
 835
 836 cc_o(){
 837     eval printf '%s\\n' $CC_O
 838 }
 839
 840 cc_e(){
 841     eval printf '%s\\n' $CC_E
 842 }
 843
 844 check_cc(){
 845     log check_cc "$@"
 846     cat > $TMPC
 847     log_file $TMPC
 848     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 849 }
 850
 851 check_cxx(){
 852     log check_cxx "$@"
 853     cat > $TMPCPP
 854     log_file $TMPCPP
 855     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 856 }
 857
 858 check_oc(){
 859     log check_oc "$@"
 860     cat > $TMPM
 861     log_file $TMPM
 862     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 863 }
 864
 865 check_cpp(){
 866     log check_cpp "$@"
 867     cat > $TMPC
 868     log_file $TMPC
 869     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 870 }
 871
 872 as_o(){
 873     eval printf '%s\\n' $AS_O
 874 }
 875
 876 check_as(){
 877     log check_as "$@"
 878     cat > $TMPS
 879     log_file $TMPS
 880     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 881 }
 882
 883 check_inline_asm(){
 884     log check_inline_asm "$@"
 885     name="$1"
 886     code="$2"
 887     shift 2
 888     disable $name
 889     check_cc "$@" <<EOF && enable $name
 890 void foo(void){ __asm__ volatile($code); }
 891 EOF
 892 }
 893
 894 check_insn(){
 895     log check_insn "$@"
 896     check_inline_asm ${1}_inline "\"$2\""
 897     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 898 }
 899
 900 check_yasm(){
 901     log check_yasm "$@"
 902     echo "$1" > $TMPS
 903     log_file $TMPS
 904     shift 1
 905     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 906 }
 907
 908 ld_o(){
 909     eval printf '%s\\n' $LD_O
 910 }
 911
 912 check_ld(){
 913     log check_ld "$@"
 914     type=$1
 915     shift 1
 916     flags=$(filter_out '-l*|*.so' $@)
 917     libs=$(filter '-l*|*.so' $@)
 918     check_$type $($cflags_filter $flags) || return
 919     flags=$($ldflags_filter $flags)
 920     libs=$($ldflags_filter $libs)
 921     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 922 }
 923
 924 print_include(){
 925     hdr=$1
 926     test "${hdr%.h}" = "${hdr}" &&
 927         echo "#include $hdr"    ||
 928         echo "#include <$hdr>"
 929 }
 930
 931 check_code(){
 932     log check_code "$@"
 933     check=$1
 934     headers=$2
 935     code=$3
 936     shift 3
 937     {
 938         for hdr in $headers; do
 939             print_include $hdr
 940         done
 941         echo "int main(void) { $code; return 0; }"
 942     } | check_$check "$@"
 943 }
 944
 945 check_cppflags(){
 946     log check_cppflags "$@"
 947     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 948 int x;
 949 EOF
 950 }
 951
 952 test_cflags(){
 953     log test_cflags "$@"
 954     set -- $($cflags_filter "$@")
 955     check_cc "$@" <<EOF
 956 int x;
 957 EOF
 958 }
 959
 960 check_cflags(){
 961     log check_cflags "$@"
 962     test_cflags "$@" && add_cflags "$@"
 963 }
 964
 965 check_cxxflags(){
 966     log check_cxxflags "$@"
 967     set -- $($cflags_filter "$@")
 968     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 969 int x;
 970 EOF
 971 }
 972
 973 test_ldflags(){
 974     log test_ldflags "$@"
 975     check_ld "cc" "$@" <<EOF
 976 int main(void){ return 0; }
 977 EOF
 978 }
 979
 980 check_ldflags(){
 981     log check_ldflags "$@"
 982     test_ldflags "$@" && add_ldflags "$@"
 983 }
 984
 985 test_stripflags(){
 986     log test_stripflags "$@"
 987     # call check_cc to get a fresh TMPO
 988     check_cc <<EOF
 989 int main(void) { return 0; }
 990 EOF
 991     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 992 }
 993
 994 check_stripflags(){
 995     log check_stripflags "$@"
 996     test_stripflags "$@" && add_stripflags "$@"
 997 }
 998
 999 check_header(){
1000     log check_header "$@"
1001     header=$1
1002     shift
1003     disable_safe $header
1004     check_cpp "$@" <<EOF && enable_safe $header
1005 #include <$header>
1006 int x;
1007 EOF
1008 }
1009
1010 check_header_oc(){
1011     log check_header_oc "$@"
1012     rm -f -- "$TMPO"
1013     header=$1
1014     shift
1015     disable_safe $header
1016     {
1017        echo "#include <$header>"
1018        echo "int main(void) { return 0; }"
1019     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1020 }
1021
1022 check_func(){
1023     log check_func "$@"
1024     func=$1
1025     shift
1026     disable $func
1027     check_ld "cc" "$@" <<EOF && enable $func
1028 extern int $func();
1029 int main(void){ $func(); }
1030 EOF
1031 }
1032
1033 check_mathfunc(){
1034     log check_mathfunc "$@"
1035     func=$1
1036     narg=$2
1037     shift 2
1038     test $narg = 2 && args="f, g" || args="f"
1039     disable $func
1040     check_ld "cc" "$@" <<EOF && enable $func
1041 #include <math.h>
1042 float foo(float f, float g) { return $func($args); }
1043 int main(void){ return (int) foo; }
1044 EOF
1045 }
1046
1047 check_func_headers(){
1048     log check_func_headers "$@"
1049     headers=$1
1050     funcs=$2
1051     shift 2
1052     {
1053         for hdr in $headers; do
1054             print_include $hdr
1055         done
1056         for func in $funcs; do
1057             echo "long check_$func(void) { return (long) $func; }"
1058         done
1059         echo "int main(void) { return 0; }"
1060     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1061 }
1062
1063 check_class_headers_cpp(){
1064     log check_class_headers_cpp "$@"
1065     headers=$1
1066     classes=$2
1067     shift 2
1068     {
1069         for hdr in $headers; do
1070             echo "#include <$hdr>"
1071         done
1072         echo "int main(void) { "
1073         i=1
1074         for class in $classes; do
1075             echo "$class obj$i;"
1076             i=$(expr $i + 1)
1077         done
1078         echo "return 0; }"
1079     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1080 }
1081
1082 check_cpp_condition(){
1083     log check_cpp_condition "$@"
1084     header=$1
1085     condition=$2
1086     shift 2
1087     check_cpp "$@" <<EOF
1088 #include <$header>
1089 #if !($condition)
1090 #error "unsatisfied condition: $condition"
1091 #endif
1092 EOF
1093 }
1094
1095 check_lib(){
1096     log check_lib "$@"
1097     header="$1"
1098     func="$2"
1099     shift 2
1100     check_header $header && check_func $func "$@" && add_extralibs "$@"
1101 }
1102
1103 check_lib2(){
1104     log check_lib2 "$@"
1105     headers="$1"
1106     funcs="$2"
1107     shift 2
1108     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1109 }
1110
1111 check_lib_cpp(){
1112     log check_lib_cpp "$@"
1113     headers="$1"
1114     classes="$2"
1115     shift 2
1116     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1117 }
1118
1119 check_pkg_config(){
1120     log check_pkg_config "$@"
1121     pkgandversion="$1"
1122     pkg="${1%% *}"
1123     headers="$2"
1124     funcs="$3"
1125     shift 3
1126     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1127     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1128     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1129     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1130         set_safe "${pkg}_cflags" $pkg_cflags   &&
1131         set_safe "${pkg}_libs"   $pkg_libs
1132 }
1133
1134 check_exec(){
1135     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1136 }
1137
1138 check_exec_crash(){
1139     code=$(cat)
1140
1141     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1142     # are safe but may not be available everywhere.  Thus we use
1143     # raise(SIGTERM) instead.  The check is run in a subshell so we
1144     # can redirect the "Terminated" message from the shell.  SIGBUS
1145     # is not defined by standard C so it is used conditionally.
1146
1147     (check_exec "$@") >> $logfile 2>&1 <<EOF
1148 #include <signal.h>
1149 static void sighandler(int sig){
1150     raise(SIGTERM);
1151 }
1152 int foo(void){
1153     $code
1154 }
1155 int (*func_ptr)(void) = foo;
1156 int main(void){
1157     signal(SIGILL, sighandler);
1158     signal(SIGFPE, sighandler);
1159     signal(SIGSEGV, sighandler);
1160 #ifdef SIGBUS
1161     signal(SIGBUS, sighandler);
1162 #endif
1163     return func_ptr();
1164 }
1165 EOF
1166 }
1167
1168 check_type(){
1169     log check_type "$@"
1170     headers=$1
1171     type=$2
1172     shift 2
1173     disable_safe "$type"
1174     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1175 }
1176
1177 check_struct(){
1178     log check_struct "$@"
1179     headers=$1
1180     struct=$2
1181     member=$3
1182     shift 3
1183     disable_safe "${struct}_${member}"
1184     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1185         enable_safe "${struct}_${member}"
1186 }
1187
1188 check_builtin(){
1189     log check_builtin "$@"
1190     name=$1
1191     headers=$2
1192     builtin=$3
1193     shift 3
1194     disable "$name"
1195     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1196 }
1197
1198 check_compile_assert(){
1199     log check_compile_assert "$@"
1200     name=$1
1201     headers=$2
1202     condition=$3
1203     shift 3
1204     disable "$name"
1205     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1206 }
1207
1208 require(){
1209     name="$1"
1210     header="$2"
1211     func="$3"
1212     shift 3
1213     check_lib $header $func "$@" || die "ERROR: $name not found"
1214 }
1215
1216 require2(){
1217     name="$1"
1218     headers="$2"
1219     func="$3"
1220     shift 3
1221     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1222 }
1223
1224 require_cpp(){
1225     name="$1"
1226     headers="$2"
1227     classes="$3"
1228     shift 3
1229     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1230 }
1231
1232 use_pkg_config(){
1233     pkg="$1"
1234     check_pkg_config "$@" || return 1
1235     add_cflags    $(get_safe "${pkg}_cflags")
1236     add_extralibs $(get_safe "${pkg}_libs")
1237 }
1238
1239 require_pkg_config(){
1240     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1241 }
1242
1243 require_libfreetype(){
1244     log require_libfreetype "$@"
1245     pkg="freetype2"
1246     check_cmd $pkg_config --exists --print-errors $pkg \
1247       || die "ERROR: $pkg not found"
1248     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1249     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1250     {
1251         echo "#include <ft2build.h>"
1252         echo "#include FT_FREETYPE_H"
1253         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1254         echo "int main(void) { return 0; }"
1255     } | check_ld "cc" $pkg_cflags $pkg_libs \
1256       && set_safe "${pkg}_cflags" $pkg_cflags \
1257       && set_safe "${pkg}_libs"   $pkg_libs \
1258       || die "ERROR: $pkg not found"
1259     add_cflags    $(get_safe "${pkg}_cflags")
1260     add_extralibs $(get_safe "${pkg}_libs")
1261 }
1262
1263 hostcc_e(){
1264     eval printf '%s\\n' $HOSTCC_E
1265 }
1266
1267 hostcc_o(){
1268     eval printf '%s\\n' $HOSTCC_O
1269 }
1270
1271 check_host_cc(){
1272     log check_host_cc "$@"
1273     cat > $TMPC
1274     log_file $TMPC
1275     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1276 }
1277
1278 check_host_cpp(){
1279     log check_host_cpp "$@"
1280     cat > $TMPC
1281     log_file $TMPC
1282     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1283 }
1284
1285 check_host_cppflags(){
1286     log check_host_cppflags "$@"
1287     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1288 int x;
1289 EOF
1290 }
1291
1292 check_host_cflags(){
1293     log check_host_cflags "$@"
1294     set -- $($host_cflags_filter "$@")
1295     check_host_cc "$@" <<EOF && append host_cflags "$@"
1296 int x;
1297 EOF
1298 }
1299
1300 check_host_cpp_condition(){
1301     log check_host_cpp_condition "$@"
1302     header=$1
1303     condition=$2
1304     shift 2
1305     check_host_cpp "$@" <<EOF
1306 #include <$header>
1307 #if !($condition)
1308 #error "unsatisfied condition: $condition"
1309 #endif
1310 EOF
1311 }
1312
1313 apply(){
1314     file=$1
1315     shift
1316     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1317 }
1318
1319 cp_if_changed(){
1320     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1321     mkdir -p "$(dirname $2)"
1322     $cp_f "$1" "$2"
1323 }
1324
1325 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1326 # system-dependent things.
1327
1328 COMPONENT_LIST="
1329     bsfs
1330     decoders
1331     demuxers
1332     encoders
1333     filters
1334     hwaccels
1335     indevs
1336     muxers
1337     outdevs
1338     parsers
1339     protocols
1340 "
1341
1342 EXAMPLE_LIST="
1343     avio_reading_example
1344     avio_list_dir_example
1345     decoding_encoding_example
1346     demuxing_decoding_example
1347     extract_mvs_example
1348     filter_audio_example
1349     filtering_audio_example
1350     filtering_video_example
1351     metadata_example
1352     muxing_example
1353     qsvdec_example
1354     remuxing_example
1355     resampling_audio_example
1356     scaling_video_example
1357     transcode_aac_example
1358     transcoding_example
1359 "
1360
1361 EXTERNAL_LIBRARY_LIST="
1362     avisynth
1363     bzlib
1364     crystalhd
1365     decklink
1366     frei0r
1367     gnutls
1368     iconv
1369     ladspa
1370     libaacplus
1371     libass
1372     libbluray
1373     libbs2b
1374     libcaca
1375     libcdio
1376     libcelt
1377     libdc1394
1378     libdcadec
1379     libfaac
1380     libfdk_aac
1381     libflite
1382     libfontconfig
1383     libfreetype
1384     libfribidi
1385     libgme
1386     libgsm
1387     libiec61883
1388     libilbc
1389     libmfx
1390     libmodplug
1391     libmp3lame
1392     libnut
1393     libopencore_amrnb
1394     libopencore_amrwb
1395     libopencv
1396     libopenh264
1397     libopenjpeg
1398     libopus
1399     libpulse
1400     libquvi
1401     librtmp
1402     libschroedinger
1403     libshine
1404     libsmbclient
1405     libsnappy
1406     libsoxr
1407     libspeex
1408     libssh
1409     libstagefright_h264
1410     libtheora
1411     libtwolame
1412     libutvideo
1413     libv4l2
1414     libvidstab
1415     libvo_aacenc
1416     libvo_amrwbenc
1417     libvorbis
1418     libvpx
1419     libwavpack
1420     libwebp
1421     libx264
1422     libx265
1423     libxavs
1424     libxcb
1425     libxcb_shm
1426     libxcb_shape
1427     libxcb_xfixes
1428     libxvid
1429     libzmq
1430     libzvbi
1431     lzma
1432     mmal
1433     nvenc
1434     openal
1435     opencl
1436     opengl
1437     openssl
1438     sdl
1439     securetransport
1440     x11grab
1441     xlib
1442     zlib
1443 "
1444
1445 DOCUMENT_LIST="
1446     doc
1447     htmlpages
1448     manpages
1449     podpages
1450     txtpages
1451 "
1452
1453 FEATURE_LIST="
1454     ftrapv
1455     gray
1456     hardcoded_tables
1457     runtime_cpudetect
1458     safe_bitstream_reader
1459     shared
1460     small
1461     static
1462     swscale_alpha
1463 "
1464
1465 HWACCEL_LIST="
1466     d3d11va
1467     dxva2
1468     vaapi
1469     vda
1470     vdpau
1471     xvmc
1472 "
1473
1474 LIBRARY_LIST="
1475     avcodec
1476     avdevice
1477     avfilter
1478     avformat
1479     avresample
1480     avutil
1481     postproc
1482     swresample
1483     swscale
1484 "
1485
1486 LICENSE_LIST="
1487     gpl
1488     nonfree
1489     version3
1490 "
1491
1492 PROGRAM_LIST="
1493     ffplay
1494     ffprobe
1495     ffserver
1496     ffmpeg
1497 "
1498
1499 SUBSYSTEM_LIST="
1500     dct
1501     dwt
1502     error_resilience
1503     faan
1504     fast_unaligned
1505     fft
1506     lsp
1507     lzo
1508     mdct
1509     pixelutils
1510     network
1511     rdft
1512 "
1513
1514 CONFIG_LIST="
1515     $COMPONENT_LIST
1516     $DOCUMENT_LIST
1517     $EXAMPLE_LIST
1518     $EXTERNAL_LIBRARY_LIST
1519     $FEATURE_LIST
1520     $HWACCEL_LIST
1521     $LICENSE_LIST
1522     $LIBRARY_LIST
1523     $PROGRAM_LIST
1524     $SUBSYSTEM_LIST
1525     fontconfig
1526     incompatible_libav_abi
1527     memalign_hack
1528     memory_poisoning
1529     neon_clobber_test
1530     pic
1531     pod2man
1532     raise_major
1533     thumb
1534     valgrind_backtrace
1535     xmm_clobber_test
1536 "
1537
1538 THREADS_LIST="
1539     pthreads
1540     os2threads
1541     w32threads
1542 "
1543
1544 ATOMICS_LIST="
1545     atomics_gcc
1546     atomics_suncc
1547     atomics_win32
1548 "
1549
1550 ARCH_LIST="
1551     aarch64
1552     alpha
1553     arm
1554     avr32
1555     avr32_ap
1556     avr32_uc
1557     bfin
1558     ia64
1559     m68k
1560     mips
1561     mips64
1562     parisc
1563     ppc
1564     ppc64
1565     s390
1566     sh4
1567     sparc
1568     sparc64
1569     tilegx
1570     tilepro
1571     tomi
1572     x86
1573     x86_32
1574     x86_64
1575 "
1576
1577 ARCH_EXT_LIST_ARM="
1578     armv5te
1579     armv6
1580     armv6t2
1581     armv8
1582     neon
1583     vfp
1584     vfpv3
1585     setend
1586 "
1587
1588 ARCH_EXT_LIST_MIPS="
1589     mipsfpu
1590     mips32r2
1591     mips32r5
1592     mips64r6
1593     mipsdspr1
1594     mipsdspr2
1595     msa
1596 "
1597
1598 ARCH_EXT_LIST_LOONGSON="
1599     loongson2
1600     loongson3
1601     mmi
1602 "
1603
1604 ARCH_EXT_LIST_X86_SIMD="
1605     amd3dnow
1606     amd3dnowext
1607     avx
1608     avx2
1609     fma3
1610     fma4
1611     mmx
1612     mmxext
1613     sse
1614     sse2
1615     sse3
1616     sse4
1617     sse42
1618     ssse3
1619     xop
1620 "
1621
1622 ARCH_EXT_LIST_PPC="
1623     altivec
1624     dcbzl
1625     ldbrx
1626     power8
1627     ppc4xx
1628     vsx
1629 "
1630
1631 ARCH_EXT_LIST_X86="
1632     $ARCH_EXT_LIST_X86_SIMD
1633     cpunop
1634     i686
1635 "
1636
1637 ARCH_EXT_LIST="
1638     $ARCH_EXT_LIST_ARM
1639     $ARCH_EXT_LIST_PPC
1640     $ARCH_EXT_LIST_X86
1641     $ARCH_EXT_LIST_MIPS
1642     $ARCH_EXT_LIST_LOONGSON
1643 "
1644
1645 ARCH_FEATURES="
1646     aligned_stack
1647     fast_64bit
1648     fast_clz
1649     fast_cmov
1650     local_aligned_8
1651     local_aligned_16
1652     local_aligned_32
1653     simd_align_16
1654 "
1655
1656 BUILTIN_LIST="
1657     atomic_cas_ptr
1658     atomic_compare_exchange
1659     machine_rw_barrier
1660     MemoryBarrier
1661     mm_empty
1662     rdtsc
1663     sarestart
1664     sync_val_compare_and_swap
1665 "
1666 HAVE_LIST_CMDLINE="
1667     inline_asm
1668     symver
1669     yasm
1670 "
1671
1672 HAVE_LIST_PUB="
1673     bigendian
1674     fast_unaligned
1675     incompatible_libav_abi
1676 "
1677
1678 HEADERS_LIST="
1679     alsa_asoundlib_h
1680     altivec_h
1681     arpa_inet_h
1682     asm_types_h
1683     cdio_paranoia_h
1684     cdio_paranoia_paranoia_h
1685     dev_bktr_ioctl_bt848_h
1686     dev_bktr_ioctl_meteor_h
1687     dev_ic_bt8xx_h
1688     dev_video_bktr_ioctl_bt848_h
1689     dev_video_meteor_ioctl_meteor_h
1690     direct_h
1691     dlfcn_h
1692     d3d11_h
1693     dxva_h
1694     ES2_gl_h
1695     gsm_h
1696     io_h
1697     mach_mach_time_h
1698     machine_ioctl_bt848_h
1699     machine_ioctl_meteor_h
1700     malloc_h
1701     openjpeg_1_5_openjpeg_h
1702     OpenGL_gl3_h
1703     poll_h
1704     sndio_h
1705     soundcard_h
1706     sys_mman_h
1707     sys_param_h
1708     sys_resource_h
1709     sys_select_h
1710     sys_soundcard_h
1711     sys_time_h
1712     sys_un_h
1713     sys_videoio_h
1714     termios_h
1715     udplite_h
1716     unistd_h
1717     valgrind_valgrind_h
1718     windows_h
1719     winsock2_h
1720 "
1721
1722 INTRINSICS_LIST="
1723     intrinsics_neon
1724 "
1725
1726 MATH_FUNCS="
1727     atanf
1728     atan2f
1729     cbrt
1730     cbrtf
1731     cosf
1732     exp2
1733     exp2f
1734     expf
1735     isinf
1736     isnan
1737     ldexpf
1738     llrint
1739     llrintf
1740     log2
1741     log2f
1742     log10f
1743     lrint
1744     lrintf
1745     powf
1746     rint
1747     round
1748     roundf
1749     sinf
1750     trunc
1751     truncf
1752 "
1753
1754 SYSTEM_FUNCS="
1755     access
1756     aligned_malloc
1757     clock_gettime
1758     closesocket
1759     CommandLineToArgvW
1760     CoTaskMemFree
1761     CryptGenRandom
1762     dlopen
1763     fcntl
1764     flt_lim
1765     fork
1766     getaddrinfo
1767     gethrtime
1768     getopt
1769     GetProcessAffinityMask
1770     GetProcessMemoryInfo
1771     GetProcessTimes
1772     getrusage
1773     getservbyport
1774     GetSystemTimeAsFileTime
1775     gettimeofday
1776     glob
1777     glXGetProcAddress
1778     gmtime_r
1779     inet_aton
1780     isatty
1781     jack_port_get_latency_range
1782     kbhit
1783     localtime_r
1784     lzo1x_999_compress
1785     mach_absolute_time
1786     MapViewOfFile
1787     memalign
1788     mkstemp
1789     mmap
1790     mprotect
1791     nanosleep
1792     PeekNamedPipe
1793     posix_memalign
1794     pthread_cancel
1795     sched_getaffinity
1796     SetConsoleTextAttribute
1797     SetConsoleCtrlHandler
1798     setmode
1799     setrlimit
1800     Sleep
1801     strerror_r
1802     sysconf
1803     sysctl
1804     usleep
1805     VirtualAlloc
1806     wglGetProcAddress
1807 "
1808
1809 TOOLCHAIN_FEATURES="
1810     as_dn_directive
1811     as_func
1812     as_object_arch
1813     asm_mod_q
1814     attribute_may_alias
1815     attribute_packed
1816     ebp_available
1817     ebx_available
1818     gnu_as
1819     gnu_windres
1820     ibm_asm
1821     inline_asm_labels
1822     inline_asm_nonlocal_labels
1823     inline_asm_direct_symbol_refs
1824     pragma_deprecated
1825     rsync_contimeout
1826     symver_asm_label
1827     symver_gnu_asm
1828     vfp_args
1829     xform_asm
1830     xmm_clobbers
1831 "
1832
1833 TYPES_LIST="
1834     CONDITION_VARIABLE_Ptr
1835     socklen_t
1836     struct_addrinfo
1837     struct_dcadec_exss_info_matrix_encoding
1838     struct_group_source_req
1839     struct_ip_mreq_source
1840     struct_ipv6_mreq
1841     struct_pollfd
1842     struct_rusage_ru_maxrss
1843     struct_sctp_event_subscribe
1844     struct_sockaddr_in6
1845     struct_sockaddr_sa_len
1846     struct_sockaddr_storage
1847     struct_stat_st_mtim_tv_nsec
1848     struct_v4l2_frmivalenum_discrete
1849 "
1850
1851 HAVE_LIST="
1852     $ARCH_EXT_LIST
1853     $(add_suffix _external $ARCH_EXT_LIST)
1854     $(add_suffix _inline   $ARCH_EXT_LIST)
1855     $ARCH_FEATURES
1856     $ATOMICS_LIST
1857     $BUILTIN_LIST
1858     $HAVE_LIST_CMDLINE
1859     $HAVE_LIST_PUB
1860     $HEADERS_LIST
1861     $INTRINSICS_LIST
1862     $MATH_FUNCS
1863     $SYSTEM_FUNCS
1864     $THREADS_LIST
1865     $TOOLCHAIN_FEATURES
1866     $TYPES_LIST
1867     atomics_native
1868     dos_paths
1869     dxva2api_cobj
1870     dxva2_lib
1871     libc_msvcrt
1872     libdc1394_1
1873     libdc1394_2
1874     makeinfo
1875     makeinfo_html
1876     perl
1877     pod2man
1878     sdl
1879     section_data_rel_ro
1880     texi2html
1881     threads
1882     vaapi_x11
1883     vdpau_x11
1884     xlib
1885 "
1886
1887 # options emitted with CONFIG_ prefix but not available on the command line
1888 CONFIG_EXTRA="
1889     aandcttables
1890     ac3dsp
1891     audio_frame_queue
1892     audiodsp
1893     blockdsp
1894     bswapdsp
1895     cabac
1896     dvprofile
1897     exif
1898     faandct
1899     faanidct
1900     fdctdsp
1901     fmtconvert
1902     frame_thread_encoder
1903     gcrypt
1904     gmp
1905     golomb
1906     gplv3
1907     h263dsp
1908     h264chroma
1909     h264dsp
1910     h264pred
1911     h264qpel
1912     hpeldsp
1913     huffman
1914     huffyuvdsp
1915     huffyuvencdsp
1916     idctdsp
1917     iirfilter
1918     imdct15
1919     intrax8
1920     jpegtables
1921     lgplv3
1922     llauddsp
1923     llviddsp
1924     lpc
1925     me_cmp
1926     mpeg_er
1927     mpegaudio
1928     mpegaudiodsp
1929     mpegvideo
1930     mpegvideoenc
1931     pixblockdsp
1932     qpeldsp
1933     qsv
1934     qsvdec
1935     qsvenc
1936     rangecoder
1937     riffdec
1938     riffenc
1939     rtpdec
1940     rtpenc_chain
1941     sinewin
1942     snappy
1943     startcode
1944     texturedsp
1945     texturedspenc
1946     tpeldsp
1947     videodsp
1948     vp3dsp
1949     wma_freqs
1950 "
1951
1952 CMDLINE_SELECT="
1953     $ARCH_EXT_LIST
1954     $CONFIG_LIST
1955     $HAVE_LIST_CMDLINE
1956     $THREADS_LIST
1957     asm
1958     cross_compile
1959     debug
1960     extra_warnings
1961     logging
1962     lto
1963     optimizations
1964     rpath
1965     stripping
1966 "
1967
1968 PATHS_LIST="
1969     bindir
1970     datadir
1971     docdir
1972     incdir
1973     libdir
1974     mandir
1975     pkgconfigdir
1976     prefix
1977     shlibdir
1978 "
1979
1980 CMDLINE_SET="
1981     $PATHS_LIST
1982     ar
1983     arch
1984     as
1985     assert_level
1986     build_suffix
1987     cc
1988     cpu
1989     cross_prefix
1990     cxx
1991     dep_cc
1992     doxygen
1993     env
1994     extra_version
1995     gas
1996     host_cc
1997     host_cflags
1998     host_ld
1999     host_ldflags
2000     host_libs
2001     host_os
2002     install
2003     ld
2004     logfile
2005     malloc_prefix
2006     nm
2007     optflags
2008     pkg_config
2009     pkg_config_flags
2010     progs_suffix
2011     random_seed
2012     ranlib
2013     samples
2014     strip
2015     sws_max_filter_size
2016     sysinclude
2017     sysroot
2018     target_exec
2019     target_os
2020     target_path
2021     target_samples
2022     tempprefix
2023     toolchain
2024     valgrind
2025     yasmexe
2026 "
2027
2028 CMDLINE_APPEND="
2029     extra_cflags
2030     extra_cxxflags
2031     host_cppflags
2032 "
2033
2034 # code dependency declarations
2035
2036 # architecture extensions
2037
2038 armv5te_deps="arm"
2039 armv6_deps="arm"
2040 armv6t2_deps="arm"
2041 armv8_deps="aarch64"
2042 neon_deps_any="aarch64 arm"
2043 intrinsics_neon_deps="neon"
2044 vfp_deps_any="aarch64 arm"
2045 vfpv3_deps="vfp"
2046 setend_deps="arm"
2047
2048 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2049
2050 mipsfpu_deps="mips"
2051 mipsdspr1_deps="mips"
2052 mipsdspr2_deps="mips"
2053 mips32r2_deps="mips"
2054 mips32r5_deps="mips"
2055 mips64r6_deps="mips"
2056 msa_deps="mips"
2057 mmi_deps="mips"
2058
2059 altivec_deps="ppc"
2060 dcbzl_deps="ppc"
2061 ldbrx_deps="ppc"
2062 ppc4xx_deps="ppc"
2063 vsx_deps="altivec"
2064 power8_deps="vsx"
2065
2066 cpunop_deps="i686"
2067 x86_64_select="i686"
2068 x86_64_suggest="fast_cmov"
2069
2070 amd3dnow_deps="mmx"
2071 amd3dnowext_deps="amd3dnow"
2072 i686_deps="x86"
2073 mmx_deps="x86"
2074 mmxext_deps="mmx"
2075 sse_deps="mmxext"
2076 sse2_deps="sse"
2077 sse3_deps="sse2"
2078 ssse3_deps="sse3"
2079 sse4_deps="ssse3"
2080 sse42_deps="sse4"
2081 avx_deps="sse42"
2082 xop_deps="avx"
2083 fma3_deps="avx"
2084 fma4_deps="avx"
2085 avx2_deps="avx"
2086
2087 mmx_external_deps="yasm"
2088 mmx_inline_deps="inline_asm"
2089 mmx_suggest="mmx_external mmx_inline"
2090
2091 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2092     eval dep=\$${ext}_deps
2093     eval ${ext}_external_deps='"${dep}_external"'
2094     eval ${ext}_inline_deps='"${dep}_inline"'
2095     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2096 done
2097
2098 aligned_stack_if_any="aarch64 ppc x86"
2099 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2100 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2101 fast_unaligned_if_any="aarch64 ppc x86"
2102 simd_align_16_if_any="altivec neon sse"
2103
2104 # system capabilities
2105 symver_if_any="symver_asm_label symver_gnu_asm"
2106 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2107
2108 # threading support
2109 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2110 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2111 atomics_win32_if="MemoryBarrier"
2112 atomics_native_if_any="$ATOMICS_LIST"
2113 w32threads_deps="atomics_native"
2114 threads_if_any="$THREADS_LIST"
2115
2116 # subsystems
2117 dct_select="rdft"
2118 error_resilience_select="me_cmp"
2119 faandct_deps="faan fdctdsp"
2120 faanidct_deps="faan idctdsp"
2121 frame_thread_encoder_deps="encoders threads"
2122 intrax8_select="error_resilience"
2123 mdct_select="fft"
2124 rdft_select="fft"
2125 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2126 mpeg_er_select="error_resilience"
2127 mpegaudio_select="mpegaudiodsp"
2128 mpegaudiodsp_select="dct"
2129 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2130 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2131 qsvdec_select="qsv"
2132 qsvenc_select="qsv"
2133
2134 # decoders / encoders
2135 aac_decoder_select="imdct15 mdct sinewin"
2136 aac_fixed_decoder_select="mdct sinewin"
2137 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2138 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2139 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2140 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2141 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2142 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2143 aic_decoder_select="golomb idctdsp"
2144 alac_encoder_select="lpc"
2145 als_decoder_select="bswapdsp"
2146 amrnb_decoder_select="lsp"
2147 amrwb_decoder_select="lsp"
2148 amv_decoder_select="sp5x_decoder exif"
2149 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2150 ape_decoder_select="bswapdsp llauddsp"
2151 apng_decoder_select="zlib"
2152 apng_encoder_select="huffyuvencdsp zlib"
2153 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2154 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2155 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2156 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2157 atrac1_decoder_select="mdct sinewin"
2158 atrac3_decoder_select="mdct"
2159 atrac3p_decoder_select="mdct sinewin"
2160 avrn_decoder_select="exif jpegtables"
2161 bink_decoder_select="blockdsp hpeldsp"
2162 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2163 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2164 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2165 cllc_decoder_select="bswapdsp"
2166 comfortnoise_encoder_select="lpc"
2167 cook_decoder_select="audiodsp mdct sinewin"
2168 cscd_decoder_select="lzo"
2169 cscd_decoder_suggest="zlib"
2170 dca_decoder_select="fmtconvert mdct"
2171 dds_decoder_select="texturedsp"
2172 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2173 dnxhd_decoder_select="blockdsp idctdsp"
2174 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2175 dvvideo_decoder_select="dvprofile idctdsp"
2176 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2177 dxa_decoder_select="zlib"
2178 eac3_decoder_select="ac3_decoder"
2179 eac3_encoder_select="ac3_encoder"
2180 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2181 eatgq_decoder_select="aandcttables"
2182 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2183 exr_decoder_select="zlib"
2184 ffv1_decoder_select="golomb rangecoder"
2185 ffv1_encoder_select="rangecoder"
2186 ffvhuff_decoder_select="huffyuv_decoder"
2187 ffvhuff_encoder_select="huffyuv_encoder"
2188 fic_decoder_select="golomb"
2189 flac_decoder_select="golomb"
2190 flac_encoder_select="bswapdsp golomb lpc"
2191 flashsv_decoder_select="zlib"
2192 flashsv_encoder_select="zlib"
2193 flashsv2_encoder_select="zlib"
2194 flashsv2_decoder_select="zlib"
2195 flv_decoder_select="h263_decoder"
2196 flv_encoder_select="h263_encoder"
2197 fourxm_decoder_select="blockdsp bswapdsp"
2198 fraps_decoder_select="bswapdsp huffman"
2199 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2200 g729_decoder_select="audiodsp"
2201 h261_decoder_select="mpeg_er mpegvideo"
2202 h261_encoder_select="aandcttables mpegvideoenc"
2203 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2204 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2205 h263i_decoder_select="h263_decoder"
2206 h263p_decoder_select="h263_decoder"
2207 h263p_encoder_select="h263_encoder"
2208 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2209 h264_decoder_suggest="error_resilience"
2210 h264_qsv_decoder_deps="libmfx"
2211 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2212 h264_qsv_encoder_deps="libmfx"
2213 h264_qsv_encoder_select="qsvenc"
2214 hap_decoder_select="snappy texturedsp"
2215 hap_encoder_deps="libsnappy"
2216 hap_encoder_select="texturedspenc"
2217 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2218 hevc_qsv_encoder_deps="libmfx"
2219 hevc_qsv_encoder_select="qsvenc"
2220 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2221 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2222 iac_decoder_select="imc_decoder"
2223 imc_decoder_select="bswapdsp fft mdct sinewin"
2224 indeo3_decoder_select="hpeldsp"
2225 interplay_video_decoder_select="hpeldsp"
2226 jpegls_decoder_select="golomb mjpeg_decoder"
2227 jpegls_encoder_select="golomb"
2228 jv_decoder_select="blockdsp"
2229 lagarith_decoder_select="huffyuvdsp"
2230 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2231 loco_decoder_select="golomb"
2232 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2233 metasound_decoder_select="lsp mdct sinewin"
2234 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2235 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2236 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2237 mjpegb_decoder_select="mjpeg_decoder"
2238 mlp_decoder_select="mlp_parser"
2239 motionpixels_decoder_select="bswapdsp"
2240 mp1_decoder_select="mpegaudio"
2241 mp1float_decoder_select="mpegaudio"
2242 mp2_decoder_select="mpegaudio"
2243 mp2float_decoder_select="mpegaudio"
2244 mp3_decoder_select="mpegaudio"
2245 mp3adu_decoder_select="mpegaudio"
2246 mp3adufloat_decoder_select="mpegaudio"
2247 mp3float_decoder_select="mpegaudio"
2248 mp3on4_decoder_select="mpegaudio"
2249 mp3on4float_decoder_select="mpegaudio"
2250 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2251 mpc8_decoder_select="mpegaudiodsp"
2252 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2253 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2254 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2255 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2256 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2257 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2258 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2259 mpeg2_qsv_encoder_deps="libmfx"
2260 mpeg2_qsv_encoder_select="qsvenc"
2261 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2262 mpeg4_encoder_select="h263_encoder"
2263 msmpeg4v1_decoder_select="h263_decoder"
2264 msmpeg4v2_decoder_select="h263_decoder"
2265 msmpeg4v2_encoder_select="h263_encoder"
2266 msmpeg4v3_decoder_select="h263_decoder"
2267 msmpeg4v3_encoder_select="h263_encoder"
2268 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2269 mxpeg_decoder_select="mjpeg_decoder"
2270 nellymoser_decoder_select="mdct sinewin"
2271 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2272 nuv_decoder_select="idctdsp lzo"
2273 on2avc_decoder_select="mdct"
2274 opus_decoder_deps="swresample"
2275 opus_decoder_select="imdct15"
2276 png_decoder_select="zlib"
2277 png_encoder_select="huffyuvencdsp zlib"
2278 prores_decoder_select="blockdsp idctdsp"
2279 prores_encoder_select="fdctdsp"
2280 qcelp_decoder_select="lsp"
2281 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2282 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2283 ra_144_decoder_select="audiodsp"
2284 ralf_decoder_select="golomb"
2285 rawvideo_decoder_select="bswapdsp"
2286 rtjpeg_decoder_select="me_cmp"
2287 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2288 rv10_encoder_select="h263_encoder"
2289 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2290 rv20_encoder_select="h263_encoder"
2291 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2292 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2293 shorten_decoder_select="golomb"
2294 sipr_decoder_select="lsp"
2295 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2296 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2297 sonic_decoder_select="golomb rangecoder"
2298 sonic_encoder_select="golomb rangecoder"
2299 sonic_ls_encoder_select="golomb rangecoder"
2300 sp5x_decoder_select="mjpeg_decoder"
2301 svq1_decoder_select="hpeldsp"
2302 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2303 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2304 svq3_decoder_suggest="zlib"
2305 tak_decoder_select="audiodsp"
2306 tdsc_decoder_select="zlib mjpeg_decoder"
2307 theora_decoder_select="vp3_decoder"
2308 thp_decoder_select="mjpeg_decoder"
2309 tiff_decoder_suggest="zlib lzma"
2310 tiff_encoder_suggest="zlib"
2311 truehd_decoder_select="mlp_parser"
2312 truemotion2_decoder_select="bswapdsp"
2313 truespeech_decoder_select="bswapdsp"
2314 tscc_decoder_select="zlib"
2315 twinvq_decoder_select="mdct lsp sinewin"
2316 txd_decoder_select="texturedsp"
2317 utvideo_decoder_select="bswapdsp"
2318 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2319 vble_decoder_select="huffyuvdsp"
2320 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2321 vc1image_decoder_select="vc1_decoder"
2322 vorbis_decoder_select="mdct"
2323 vorbis_encoder_select="mdct"
2324 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2325 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2326 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2327 vp6a_decoder_select="vp6_decoder"
2328 vp6f_decoder_select="vp6_decoder"
2329 vp7_decoder_select="h264pred videodsp"
2330 vp8_decoder_select="h264pred videodsp"
2331 vp9_decoder_select="videodsp vp9_parser"
2332 webp_decoder_select="vp8_decoder"
2333 wmalossless_decoder_select="llauddsp"
2334 wmapro_decoder_select="mdct sinewin wma_freqs"
2335 wmav1_decoder_select="mdct sinewin wma_freqs"
2336 wmav1_encoder_select="mdct sinewin wma_freqs"
2337 wmav2_decoder_select="mdct sinewin wma_freqs"
2338 wmav2_encoder_select="mdct sinewin wma_freqs"
2339 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2340 wmv1_decoder_select="h263_decoder"
2341 wmv1_encoder_select="h263_encoder"
2342 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2343 wmv2_encoder_select="h263_encoder"
2344 wmv3_decoder_select="vc1_decoder"
2345 wmv3image_decoder_select="wmv3_decoder"
2346 zerocodec_decoder_select="zlib"
2347 zlib_decoder_select="zlib"
2348 zlib_encoder_select="zlib"
2349 zmbv_decoder_select="zlib"
2350 zmbv_encoder_select="zlib"
2351
2352 # hardware accelerators
2353 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2354 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2355 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2356 vaapi_deps="va_va_h"
2357 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2358 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2359 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2360 xvmc_deps="X11_extensions_XvMClib_h"
2361
2362 h263_vaapi_hwaccel_deps="vaapi"
2363 h263_vaapi_hwaccel_select="h263_decoder"
2364 h263_vdpau_hwaccel_deps="vdpau"
2365 h263_vdpau_hwaccel_select="h263_decoder"
2366 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2367 h264_d3d11va_hwaccel_deps="d3d11va"
2368 h264_d3d11va_hwaccel_select="h264_decoder"
2369 h264_dxva2_hwaccel_deps="dxva2"
2370 h264_dxva2_hwaccel_select="h264_decoder"
2371 h264_mmal_decoder_deps="mmal"
2372 h264_mmal_hwaccel_deps="mmal"
2373 h264_mmal_decoder_select="h264_decoder"
2374 h264_mmal_encoder_deps="mmal"
2375 h264_qsv_hwaccel_deps="libmfx"
2376 h264_vaapi_hwaccel_deps="vaapi"
2377 h264_vaapi_hwaccel_select="h264_decoder"
2378 h264_vda_decoder_deps="vda"
2379 h264_vda_decoder_select="h264_decoder"
2380 h264_vda_hwaccel_deps="vda"
2381 h264_vda_hwaccel_select="h264_decoder"
2382 h264_vda_old_hwaccel_deps="vda"
2383 h264_vda_old_hwaccel_select="h264_decoder"
2384 h264_vdpau_decoder_deps="vdpau"
2385 h264_vdpau_decoder_select="h264_decoder"
2386 h264_vdpau_hwaccel_deps="vdpau"
2387 h264_vdpau_hwaccel_select="h264_decoder"
2388 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2389 hevc_d3d11va_hwaccel_select="hevc_decoder"
2390 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2391 hevc_dxva2_hwaccel_select="hevc_decoder"
2392 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2393 hevc_vdpau_hwaccel_select="hevc_decoder"
2394 mpeg_vdpau_decoder_deps="vdpau"
2395 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2396 mpeg_xvmc_hwaccel_deps="xvmc"
2397 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2398 mpeg1_vdpau_decoder_deps="vdpau"
2399 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2400 mpeg1_vdpau_hwaccel_deps="vdpau"
2401 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2402 mpeg1_xvmc_hwaccel_deps="xvmc"
2403 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2404 mpeg2_crystalhd_decoder_select="crystalhd"
2405 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2406 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2407 mpeg2_dxva2_hwaccel_deps="dxva2"
2408 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2409 mpeg2_vaapi_hwaccel_deps="vaapi"
2410 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2411 mpeg2_vdpau_hwaccel_deps="vdpau"
2412 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2413 mpeg2_xvmc_hwaccel_deps="xvmc"
2414 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2415 mpeg4_crystalhd_decoder_select="crystalhd"
2416 mpeg4_vaapi_hwaccel_deps="vaapi"
2417 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2418 mpeg4_vdpau_decoder_deps="vdpau"
2419 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2420 mpeg4_vdpau_hwaccel_deps="vdpau"
2421 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2422 msmpeg4_crystalhd_decoder_select="crystalhd"
2423 vc1_crystalhd_decoder_select="crystalhd"
2424 vc1_d3d11va_hwaccel_deps="d3d11va"
2425 vc1_d3d11va_hwaccel_select="vc1_decoder"
2426 vc1_dxva2_hwaccel_deps="dxva2"
2427 vc1_dxva2_hwaccel_select="vc1_decoder"
2428 vc1_vaapi_hwaccel_deps="vaapi"
2429 vc1_vaapi_hwaccel_select="vc1_decoder"
2430 vc1_vdpau_decoder_deps="vdpau"
2431 vc1_vdpau_decoder_select="vc1_decoder"
2432 vc1_vdpau_hwaccel_deps="vdpau"
2433 vc1_vdpau_hwaccel_select="vc1_decoder"
2434 wmv3_crystalhd_decoder_select="crystalhd"
2435 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2436 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2437 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2438 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2439 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2440
2441 # parsers
2442 h264_parser_select="h264_decoder"
2443 hevc_parser_select="hevc_decoder"
2444 mpegvideo_parser_select="mpegvideo"
2445 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2446 vc1_parser_select="mpegvideo startcode vc1_decoder"
2447
2448 # bitstream_filters
2449 mjpeg2jpeg_bsf_select="jpegtables"
2450
2451 # external libraries
2452 libaacplus_encoder_deps="libaacplus"
2453 libcelt_decoder_deps="libcelt"
2454 libdcadec_decoder_deps="libdcadec"
2455 libfaac_encoder_deps="libfaac"
2456 libfaac_encoder_select="audio_frame_queue"
2457 libfdk_aac_decoder_deps="libfdk_aac"
2458 libfdk_aac_encoder_deps="libfdk_aac"
2459 libfdk_aac_encoder_select="audio_frame_queue"
2460 libgme_demuxer_deps="libgme"
2461 libgsm_decoder_deps="libgsm"
2462 libgsm_encoder_deps="libgsm"
2463 libgsm_ms_decoder_deps="libgsm"
2464 libgsm_ms_encoder_deps="libgsm"
2465 libilbc_decoder_deps="libilbc"
2466 libilbc_encoder_deps="libilbc"
2467 libmodplug_demuxer_deps="libmodplug"
2468 libmp3lame_encoder_deps="libmp3lame"
2469 libmp3lame_encoder_select="audio_frame_queue"
2470 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2471 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2472 libopencore_amrnb_encoder_select="audio_frame_queue"
2473 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2474 libopenh264_encoder_deps="libopenh264"
2475 libopenjpeg_decoder_deps="libopenjpeg"
2476 libopenjpeg_encoder_deps="libopenjpeg"
2477 libopus_decoder_deps="libopus"
2478 libopus_encoder_deps="libopus"
2479 libopus_encoder_select="audio_frame_queue"
2480 libquvi_demuxer_deps="libquvi"
2481 libschroedinger_decoder_deps="libschroedinger"
2482 libschroedinger_encoder_deps="libschroedinger"
2483 libshine_encoder_deps="libshine"
2484 libshine_encoder_select="audio_frame_queue"
2485 libspeex_decoder_deps="libspeex"
2486 libspeex_encoder_deps="libspeex"
2487 libspeex_encoder_select="audio_frame_queue"
2488 libstagefright_h264_decoder_deps="libstagefright_h264"
2489 libtheora_encoder_deps="libtheora"
2490 libtwolame_encoder_deps="libtwolame"
2491 libvo_aacenc_encoder_deps="libvo_aacenc"
2492 libvo_aacenc_encoder_select="audio_frame_queue"
2493 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2494 libvorbis_decoder_deps="libvorbis"
2495 libvorbis_encoder_deps="libvorbis"
2496 libvorbis_encoder_select="audio_frame_queue"
2497 libvpx_vp8_decoder_deps="libvpx"
2498 libvpx_vp8_encoder_deps="libvpx"
2499 libvpx_vp9_decoder_deps="libvpx"
2500 libvpx_vp9_encoder_deps="libvpx"
2501 libwavpack_encoder_deps="libwavpack"
2502 libwebp_encoder_deps="libwebp"
2503 libwebp_anim_encoder_deps="libwebp"
2504 libx264_encoder_deps="libx264"
2505 libx264rgb_encoder_deps="libx264"
2506 libx264rgb_encoder_select="libx264_encoder"
2507 libx265_encoder_deps="libx265"
2508 libxavs_encoder_deps="libxavs"
2509 libxvid_encoder_deps="libxvid"
2510 libutvideo_decoder_deps="libutvideo"
2511 libutvideo_encoder_deps="libutvideo"
2512 libzvbi_teletext_decoder_deps="libzvbi"
2513 nvenc_encoder_deps="nvenc"
2514 nvenc_h264_encoder_deps="nvenc"
2515 nvenc_hevc_encoder_deps="nvenc"
2516
2517 # demuxers / muxers
2518 ac3_demuxer_select="ac3_parser"
2519 asf_demuxer_select="riffdec"
2520 asf_o_demuxer_select="riffdec"
2521 asf_muxer_select="riffenc"
2522 asf_stream_muxer_select="asf_muxer"
2523 avi_demuxer_select="riffdec exif"
2524 avi_muxer_select="riffenc"
2525 avisynth_demuxer_deps="avisynth"
2526 avisynth_demuxer_select="riffdec"
2527 caf_demuxer_select="riffdec"
2528 dash_muxer_select="mp4_muxer"
2529 dirac_demuxer_select="dirac_parser"
2530 dts_demuxer_select="dca_parser"
2531 dtshd_demuxer_select="dca_parser"
2532 dv_demuxer_select="dvprofile"
2533 dv_muxer_select="dvprofile"
2534 dxa_demuxer_select="riffdec"
2535 eac3_demuxer_select="ac3_parser"
2536 f4v_muxer_select="mov_muxer"
2537 flac_demuxer_select="flac_parser"
2538 hds_muxer_select="flv_muxer"
2539 hls_muxer_select="mpegts_muxer"
2540 image2_alias_pix_demuxer_select="image2_demuxer"
2541 image2_brender_pix_demuxer_select="image2_demuxer"
2542 ipod_muxer_select="mov_muxer"
2543 ismv_muxer_select="mov_muxer"
2544 libnut_demuxer_deps="libnut"
2545 libnut_muxer_deps="libnut"
2546 matroska_audio_muxer_select="matroska_muxer"
2547 matroska_demuxer_select="riffdec"
2548 matroska_demuxer_suggest="bzlib lzo zlib"
2549 matroska_muxer_select="riffenc"
2550 mmf_muxer_select="riffenc"
2551 mov_demuxer_select="riffdec"
2552 mov_demuxer_suggest="zlib"
2553 mov_muxer_select="riffenc rtpenc_chain"
2554 mp3_demuxer_select="mpegaudio_parser"
2555 mp4_muxer_select="mov_muxer"
2556 mpegts_muxer_select="adts_muxer latm_muxer"
2557 mpegtsraw_demuxer_select="mpegts_demuxer"
2558 mxf_d10_muxer_select="mxf_muxer"
2559 mxf_opatom_muxer_select="mxf_muxer"
2560 nut_muxer_select="riffenc"
2561 nuv_demuxer_select="riffdec"
2562 oga_muxer_select="ogg_muxer"
2563 ogg_demuxer_select="golomb"
2564 opus_muxer_select="ogg_muxer"
2565 psp_muxer_select="mov_muxer"
2566 rtp_demuxer_select="sdp_demuxer"
2567 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2568 rtsp_demuxer_select="http_protocol rtpdec"
2569 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2570 sap_demuxer_select="sdp_demuxer"
2571 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2572 sdp_demuxer_select="rtpdec"
2573 smoothstreaming_muxer_select="ismv_muxer"
2574 spdif_muxer_select="aac_parser"
2575 spx_muxer_select="ogg_muxer"
2576 tak_demuxer_select="tak_parser"
2577 tg2_muxer_select="mov_muxer"
2578 tgp_muxer_select="mov_muxer"
2579 vobsub_demuxer_select="mpegps_demuxer"
2580 w64_demuxer_select="wav_demuxer"
2581 w64_muxer_select="wav_muxer"
2582 wav_demuxer_select="riffdec"
2583 wav_muxer_select="riffenc"
2584 webm_muxer_select="riffenc"
2585 wtv_demuxer_select="riffdec"
2586 wtv_muxer_select="riffenc"
2587 xmv_demuxer_select="riffdec"
2588 xwma_demuxer_select="riffdec"
2589
2590 # indevs / outdevs
2591 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2592 alsa_outdev_deps="alsa_asoundlib_h"
2593 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2594 avfoundation_indev_select="avfoundation"
2595 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2596 caca_outdev_deps="libcaca"
2597 decklink_outdev_deps="decklink pthreads"
2598 decklink_outdev_extralibs="-lstdc++"
2599 decklink_indev_deps="decklink pthreads"
2600 decklink_indev_extralibs="-lstdc++"
2601 dshow_indev_deps="IBaseFilter"
2602 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2603 dv1394_indev_deps="dv1394"
2604 dv1394_indev_select="dv_demuxer"
2605 fbdev_indev_deps="linux_fb_h"
2606 fbdev_outdev_deps="linux_fb_h"
2607 gdigrab_indev_deps="CreateDIBSection"
2608 gdigrab_indev_extralibs="-lgdi32"
2609 gdigrab_indev_select="bmp_decoder"
2610 iec61883_indev_deps="libiec61883"
2611 jack_indev_deps="jack_jack_h sem_timedwait"
2612 lavfi_indev_deps="avfilter"
2613 libcdio_indev_deps="libcdio"
2614 libdc1394_indev_deps="libdc1394"
2615 libv4l2_indev_deps="libv4l2"
2616 openal_indev_deps="openal"
2617 opengl_outdev_deps="opengl"
2618 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2619 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2620 pulse_indev_deps="libpulse"
2621 pulse_outdev_deps="libpulse"
2622 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2623 qtkit_indev_select="qtkit"
2624 sdl_outdev_deps="sdl"
2625 sndio_indev_deps="sndio_h"
2626 sndio_outdev_deps="sndio_h"
2627 v4l_indev_deps="linux_videodev_h"
2628 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2629 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2630 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2631 vfwcap_indev_extralibs="-lavicap32"
2632 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2633 xv_outdev_extralibs="-lXv -lX11 -lXext"
2634 x11grab_indev_deps="x11grab"
2635 x11grab_xcb_indev_deps="libxcb"
2636
2637 # protocols
2638 bluray_protocol_deps="libbluray"
2639 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2640 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2641 ffrtmpcrypt_protocol_select="tcp_protocol"
2642 ffrtmphttp_protocol_deps="!librtmp_protocol"
2643 ffrtmphttp_protocol_select="http_protocol"
2644 ftp_protocol_select="tcp_protocol"
2645 gopher_protocol_select="network"
2646 http_protocol_select="tcp_protocol"
2647 httpproxy_protocol_select="tcp_protocol"
2648 https_protocol_select="tls_protocol"
2649 icecast_protocol_select="http_protocol"
2650 librtmp_protocol_deps="librtmp"
2651 librtmpe_protocol_deps="librtmp"
2652 librtmps_protocol_deps="librtmp"
2653 librtmpt_protocol_deps="librtmp"
2654 librtmpte_protocol_deps="librtmp"
2655 libsmbclient_protocol_deps="libsmbclient gplv3"
2656 libssh_protocol_deps="libssh"
2657 mmsh_protocol_select="http_protocol"
2658 mmst_protocol_select="network"
2659 rtmp_protocol_deps="!librtmp_protocol"
2660 rtmp_protocol_select="tcp_protocol"
2661 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2662 rtmps_protocol_deps="!librtmp_protocol"
2663 rtmps_protocol_select="tls_protocol"
2664 rtmpt_protocol_select="ffrtmphttp_protocol"
2665 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2666 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2667 rtp_protocol_select="udp_protocol"
2668 sctp_protocol_deps="struct_sctp_event_subscribe"
2669 sctp_protocol_select="network"
2670 srtp_protocol_select="rtp_protocol"
2671 tcp_protocol_select="network"
2672 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2673 tls_gnutls_protocol_select="tcp_protocol"
2674 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2675 tls_openssl_protocol_select="tcp_protocol"
2676 tls_securetransport_protocol_deps="securetransport"
2677 tls_securetransport_protocol_select="tcp_protocol"
2678 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2679 udp_protocol_select="network"
2680 udplite_protocol_select="network"
2681 unix_protocol_deps="sys_un_h"
2682 unix_protocol_select="network"
2683
2684 # filters
2685 amovie_filter_deps="avcodec avformat"
2686 aresample_filter_deps="swresample"
2687 ass_filter_deps="libass"
2688 asyncts_filter_deps="avresample"
2689 atempo_filter_deps="avcodec"
2690 atempo_filter_select="rdft"
2691 azmq_filter_deps="libzmq"
2692 blackframe_filter_deps="gpl"
2693 boxblur_filter_deps="gpl"
2694 bs2b_filter_deps="libbs2b"
2695 colormatrix_filter_deps="gpl"
2696 cover_rect_filter_deps="avcodec avformat gpl"
2697 cropdetect_filter_deps="gpl"
2698 delogo_filter_deps="gpl"
2699 deshake_filter_select="pixelutils"
2700 drawtext_filter_deps="libfreetype"
2701 ebur128_filter_deps="gpl"
2702 eq_filter_deps="gpl"
2703 fftfilt_filter_deps="avcodec"
2704 fftfilt_filter_select="rdft"
2705 flite_filter_deps="libflite"
2706 find_rect_filter_deps="avcodec avformat gpl"
2707 frei0r_filter_deps="frei0r dlopen"
2708 frei0r_src_filter_deps="frei0r dlopen"
2709 fspp_filter_deps="gpl"
2710 geq_filter_deps="gpl"
2711 histeq_filter_deps="gpl"
2712 hqdn3d_filter_deps="gpl"
2713 interlace_filter_deps="gpl"
2714 kerndeint_filter_deps="gpl"
2715 ladspa_filter_deps="ladspa dlopen"
2716 mcdeint_filter_deps="avcodec gpl"
2717 movie_filter_deps="avcodec avformat"
2718 mpdecimate_filter_deps="gpl"
2719 mpdecimate_filter_select="pixelutils"
2720 mptestsrc_filter_deps="gpl"
2721 negate_filter_deps="lut_filter"
2722 perspective_filter_deps="gpl"
2723 pp7_filter_deps="gpl"
2724 ocv_filter_deps="libopencv"
2725 owdenoise_filter_deps="gpl"
2726 pan_filter_deps="swresample"
2727 phase_filter_deps="gpl"
2728 pp_filter_deps="gpl postproc"
2729 pullup_filter_deps="gpl"
2730 removelogo_filter_deps="avcodec avformat swscale"
2731 repeatfields_filter_deps="gpl"
2732 resample_filter_deps="avresample"
2733 sab_filter_deps="gpl swscale"
2734 scale_filter_deps="swscale"
2735 select_filter_select="pixelutils"
2736 smartblur_filter_deps="gpl swscale"
2737 showcqt_filter_deps="avcodec"
2738 showcqt_filter_select="fft"
2739 showspectrum_filter_deps="avcodec"
2740 showspectrum_filter_select="rdft"
2741 spp_filter_deps="gpl avcodec"
2742 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2743 stereo3d_filter_deps="gpl"
2744 subtitles_filter_deps="avformat avcodec libass"
2745 super2xsai_filter_deps="gpl"
2746 tinterlace_filter_deps="gpl"
2747 vidstabdetect_filter_deps="libvidstab"
2748 vidstabtransform_filter_deps="libvidstab"
2749 pixfmts_super2xsai_test_deps="super2xsai_filter"
2750 tinterlace_merge_test_deps="tinterlace_filter"
2751 tinterlace_pad_test_deps="tinterlace_filter"
2752 uspp_filter_deps="gpl avcodec"
2753 zmq_filter_deps="libzmq"
2754 zoompan_filter_deps="swscale"
2755
2756 # examples
2757 avio_reading="avformat avcodec avutil"
2758 avio_list_dir="avformat avutil"
2759 avcodec_example_deps="avcodec avutil"
2760 decoding_encoding_example_deps="avcodec avformat avutil"
2761 demuxing_decoding_example_deps="avcodec avformat avutil"
2762 extract_mvs_example_deps="avcodec avformat avutil"
2763 filter_audio_example_deps="avfilter avutil"
2764 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2765 filtering_video_example_deps="avfilter avcodec avformat avutil"
2766 metadata_example_deps="avformat avutil"
2767 muxing_example_deps="avcodec avformat avutil swscale"
2768 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2769 remuxing_example_deps="avcodec avformat avutil"
2770 resampling_audio_example_deps="avutil swresample"
2771 scaling_video_example_deps="avutil swscale"
2772 transcode_aac_example_deps="avcodec avformat swresample"
2773 transcoding_example_deps="avfilter avcodec avformat avutil"
2774
2775 # libraries, in linking order
2776 avcodec_deps="avutil"
2777 avdevice_deps="avformat avcodec avutil"
2778 avfilter_deps="avutil"
2779 avformat_deps="avcodec avutil"
2780 avresample_deps="avutil"
2781 postproc_deps="avutil gpl"
2782 swresample_deps="avutil"
2783 swscale_deps="avutil"
2784
2785 # programs
2786 ffmpeg_deps="avcodec avfilter avformat swresample"
2787 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2788                null_filter
2789                setpts_filter trim_filter"
2790 ffplay_deps="avcodec avformat swscale swresample sdl"
2791 ffplay_libs='$sdl_libs'
2792 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2793 ffprobe_deps="avcodec avformat"
2794 ffserver_deps="avformat fork sarestart"
2795 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2796
2797 # documentation
2798 podpages_deps="perl"
2799 manpages_deps="perl pod2man"
2800 htmlpages_deps="perl"
2801 htmlpages_deps_any="makeinfo_html texi2html"
2802 txtpages_deps="perl makeinfo"
2803 doc_deps_any="manpages htmlpages podpages txtpages"
2804
2805 # default parameters
2806
2807 logfile="config.log"
2808
2809 # installation paths
2810 prefix_default="/usr/local"
2811 bindir_default='${prefix}/bin'
2812 datadir_default='${prefix}/share/ffmpeg'
2813 docdir_default='${prefix}/share/doc/ffmpeg'
2814 incdir_default='${prefix}/include'
2815 libdir_default='${prefix}/lib'
2816 mandir_default='${prefix}/share/man'
2817
2818 # toolchain
2819 ar_default="ar"
2820 cc_default="gcc"
2821 cxx_default="g++"
2822 host_cc_default="gcc"
2823 cp_f="cp -f"
2824 doxygen_default="doxygen"
2825 install="install"
2826 ln_s="ln -s -f"
2827 nm_default="nm -g"
2828 objformat="elf"
2829 pkg_config_default=pkg-config
2830 ranlib_default="ranlib"
2831 strip_default="strip"
2832 yasmexe_default="yasm"
2833 windres_default="windres"
2834
2835 # OS
2836 target_os_default=$(tolower $(uname -s))
2837 host_os=$target_os_default
2838
2839 # machine
2840 if test "$target_os_default" = aix; then
2841     arch_default=$(uname -p)
2842     strip_default="strip -X32_64"
2843 else
2844     arch_default=$(uname -m)
2845 fi
2846 cpu="generic"
2847 intrinsics="none"
2848
2849 # configurable options
2850 enable $PROGRAM_LIST
2851 enable $DOCUMENT_LIST
2852 enable $EXAMPLE_LIST
2853 enable $(filter_out avresample $LIBRARY_LIST)
2854 enable stripping
2855
2856 enable asm
2857 enable debug
2858 enable doc
2859 enable faan faandct faanidct
2860 enable optimizations
2861 enable runtime_cpudetect
2862 enable safe_bitstream_reader
2863 enable static
2864 enable swscale_alpha
2865 enable valgrind_backtrace
2866
2867 sws_max_filter_size_default=256
2868 set_default sws_max_filter_size
2869
2870 # Enable hwaccels by default.
2871 enable d3d11va dxva2 vaapi vda vdpau xvmc
2872 enable xlib
2873
2874 # build settings
2875 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2876 LIBPREF="lib"
2877 LIBSUF=".a"
2878 FULLNAME='$(NAME)$(BUILDSUF)'
2879 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2880 SLIBPREF="lib"
2881 SLIBSUF=".so"
2882 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2883 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2884 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2885 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2886 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2887 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2888
2889 asflags_filter=echo
2890 cflags_filter=echo
2891 ldflags_filter=echo
2892
2893 AS_C='-c'
2894 AS_O='-o $@'
2895 CC_C='-c'
2896 CC_E='-E -o $@'
2897 CC_O='-o $@'
2898 CXX_C='-c'
2899 CXX_O='-o $@'
2900 LD_O='-o $@'
2901 LD_LIB='-l%'
2902 LD_PATH='-L'
2903 HOSTCC_C='-c'
2904 HOSTCC_E='-E -o $@'
2905 HOSTCC_O='-o $@'
2906 HOSTLD_O='-o $@'
2907
2908 host_libs='-lm'
2909 host_cflags_filter=echo
2910 host_ldflags_filter=echo
2911
2912 target_path='$(CURDIR)'
2913
2914 # since the object filename is not given with the -MM flag, the compiler
2915 # is only able to print the basename, and we must add the path ourselves
2916 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2917 DEPFLAGS='-MM'
2918
2919 # find source path
2920 if test -f configure; then
2921     source_path=.
2922 else
2923     source_path=$(cd $(dirname "$0"); pwd)
2924     echo "$source_path" | grep -q '[[:blank:]]' &&
2925         die "Out of tree builds are impossible with whitespace in source path."
2926     test -e "$source_path/config.h" &&
2927         die "Out of tree builds are impossible with config.h in source dir."
2928 fi
2929
2930 for v in "$@"; do
2931     r=${v#*=}
2932     l=${v%"$r"}
2933     r=$(sh_quote "$r")
2934     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2935 done
2936
2937 find_things(){
2938     thing=$1
2939     pattern=$2
2940     file=$source_path/$3
2941     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2942 }
2943
2944 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2945 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2946 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2947 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2948 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2949 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2950 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2951 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2952 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2953 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2954 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2955
2956 ALL_COMPONENTS="
2957     $BSF_LIST
2958     $DECODER_LIST
2959     $DEMUXER_LIST
2960     $ENCODER_LIST
2961     $FILTER_LIST
2962     $HWACCEL_LIST
2963     $INDEV_LIST
2964     $MUXER_LIST
2965     $OUTDEV_LIST
2966     $PARSER_LIST
2967     $PROTOCOL_LIST
2968 "
2969
2970 for n in $COMPONENT_LIST; do
2971     v=$(toupper ${n%s})_LIST
2972     eval enable \$$v
2973     eval ${n}_if_any="\$$v"
2974 done
2975
2976 enable $ARCH_EXT_LIST
2977
2978 die_unknown(){
2979     echo "Unknown option \"$1\"."
2980     echo "See $0 --help for available options."
2981     exit 1
2982 }
2983
2984 print_3_columns() {
2985     cat | tr ' ' '\n' | sort | pr -r -3 -t
2986 }
2987
2988 show_list() {
2989     suffix=_$1
2990     shift
2991     echo $* | sed s/$suffix//g | print_3_columns
2992     exit 0
2993 }
2994
2995 rand_list(){
2996     IFS=', '
2997     set -- $*
2998     unset IFS
2999     for thing; do
3000         comp=${thing%:*}
3001         prob=${thing#$comp}
3002         prob=${prob#:}
3003         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3004         echo "prob ${prob:-0.5}"
3005         printf '%s\n' $comp
3006     done
3007 }
3008
3009 do_random(){
3010     action=$1
3011     shift
3012     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3013     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3014 }
3015
3016 for opt do
3017     optval="${opt#*=}"
3018     case "$opt" in
3019         --extra-ldflags=*)
3020             add_ldflags $optval
3021         ;;
3022         --extra-ldexeflags=*)
3023             add_ldexeflags $optval
3024         ;;
3025         --extra-ldlibflags=*)
3026             add_ldlibflags $optval
3027         ;;
3028         --extra-libs=*)
3029             add_extralibs $optval
3030         ;;
3031         --disable-devices)
3032             disable $INDEV_LIST $OUTDEV_LIST
3033         ;;
3034         --enable-debug=*)
3035             debuglevel="$optval"
3036         ;;
3037         --disable-programs)
3038             disable $PROGRAM_LIST
3039         ;;
3040         --disable-everything)
3041             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3042         ;;
3043         --disable-all)
3044             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3045             disable $LIBRARY_LIST $PROGRAM_LIST doc
3046         ;;
3047         --enable-random|--disable-random)
3048             action=${opt%%-random}
3049             do_random ${action#--} $COMPONENT_LIST
3050         ;;
3051         --enable-random=*|--disable-random=*)
3052             action=${opt%%-random=*}
3053             do_random ${action#--} $optval
3054         ;;
3055         --enable-*=*|--disable-*=*)
3056             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3057             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3058             eval list=\$$(toupper $thing)_LIST
3059             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3060             list=$(filter "$name" $list)
3061             [ "$list" = "" ] && warn "Option $opt did not match anything"
3062             $action $list
3063         ;;
3064         --enable-?*|--disable-?*)
3065             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3066             if is_in $option $COMPONENT_LIST; then
3067                 test $action = disable && action=unset
3068                 eval $action \$$(toupper ${option%s})_LIST
3069             elif is_in $option $CMDLINE_SELECT; then
3070                 $action $option
3071             else
3072                 die_unknown $opt
3073             fi
3074         ;;
3075         --list-*)
3076             NAME="${opt#--list-}"
3077             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3078             NAME=${NAME%s}
3079             eval show_list $NAME \$$(toupper $NAME)_LIST
3080         ;;
3081         --help|-h) show_help
3082         ;;
3083         --fatal-warnings) enable fatal_warnings
3084         ;;
3085         *)
3086             optname="${opt%%=*}"
3087             optname="${optname#--}"
3088             optname=$(echo "$optname" | sed 's/-/_/g')
3089             if is_in $optname $CMDLINE_SET; then
3090                 eval $optname='$optval'
3091             elif is_in $optname $CMDLINE_APPEND; then
3092                 append $optname "$optval"
3093             else
3094                 die_unknown $opt
3095             fi
3096         ;;
3097     esac
3098 done
3099
3100 for e in $env; do
3101     eval "export $e"
3102 done
3103
3104 disabled logging && logfile=/dev/null
3105
3106 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3107 set >> $logfile
3108
3109 test -n "$valgrind" && toolchain="valgrind-memcheck"
3110
3111 case "$toolchain" in
3112     clang-asan)
3113         cc_default="clang"
3114         add_cflags  -fsanitize=address
3115         add_ldflags -fsanitize=address
3116     ;;
3117     clang-tsan)
3118         cc_default="clang"
3119         add_cflags  -fsanitize=thread -pie
3120         add_ldflags -fsanitize=thread -pie
3121     ;;
3122     clang-usan)
3123         cc_default="clang"
3124         add_cflags  -fsanitize=undefined
3125         add_ldflags -fsanitize=undefined
3126     ;;
3127     gcc-asan)
3128         cc_default="gcc"
3129         add_cflags  -fsanitize=address
3130         add_ldflags -fsanitize=address
3131     ;;
3132     gcc-tsan)
3133         cc_default="gcc"
3134         add_cflags  -fsanitize=thread -pie -fPIC
3135         add_ldflags -fsanitize=thread -pie -fPIC
3136     ;;
3137     gcc-usan)
3138         cc_default="gcc"
3139         add_cflags  -fsanitize=undefined
3140         add_ldflags -fsanitize=undefined
3141     ;;
3142     valgrind-massif)
3143         target_exec_default=${valgrind:-"valgrind"}
3144         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"
3145     ;;
3146     valgrind-memcheck)
3147         target_exec_default=${valgrind:-"valgrind"}
3148         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3149     ;;
3150     msvc)
3151         # Check whether the current MSVC version needs the C99 converter.
3152         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3153         # support enough of C99 to build ffmpeg. Default to the new
3154         # behaviour if the regexp was unable to match anything, since this
3155         # successfully parses the version number of existing supported
3156         # versions that require the converter (MSVC 2010 and 2012).
3157         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3158         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3159             cc_default="cl"
3160         else
3161             cc_default="c99wrap cl"
3162         fi
3163         ld_default="link"
3164         nm_default="dumpbin -symbols"
3165         ar_default="lib"
3166         target_os_default="win32"
3167         # Use a relative path for TMPDIR. This makes sure all the
3168         # ffconf temp files are written with a relative path, avoiding
3169         # issues with msys/win32 path conversion for MSVC parameters
3170         # such as -Fo<file> or -out:<file>.
3171         TMPDIR=.
3172     ;;
3173     icl)
3174         cc_default="icl"
3175         ld_default="xilink"
3176         nm_default="dumpbin -symbols"
3177         ar_default="xilib"
3178         target_os_default="win32"
3179         TMPDIR=.
3180     ;;
3181     gcov)
3182         add_cflags  -fprofile-arcs -ftest-coverage
3183         add_ldflags -fprofile-arcs -ftest-coverage
3184     ;;
3185     hardened)
3186         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3187         add_cflags   -fno-strict-overflow -fstack-protector-all
3188         add_ldflags  -Wl,-z,relro -Wl,-z,now
3189     ;;
3190     ?*)
3191         die "Unknown toolchain $toolchain"
3192     ;;
3193 esac
3194
3195 test -n "$cross_prefix" && enable cross_compile
3196
3197 if enabled cross_compile; then
3198     test -n "$arch" && test -n "$target_os" ||
3199         die "Must specify target arch and OS when cross-compiling"
3200 fi
3201
3202 ar_default="${cross_prefix}${ar_default}"
3203 cc_default="${cross_prefix}${cc_default}"
3204 cxx_default="${cross_prefix}${cxx_default}"
3205 nm_default="${cross_prefix}${nm_default}"
3206 pkg_config_default="${cross_prefix}${pkg_config_default}"
3207 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3208     ranlib_default="${cross_prefix}${ranlib_default} -D"
3209 else
3210     ranlib_default="${cross_prefix}${ranlib_default}"
3211 fi
3212 strip_default="${cross_prefix}${strip_default}"
3213 windres_default="${cross_prefix}${windres_default}"
3214
3215 sysinclude_default="${sysroot}/usr/include"
3216
3217 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3218     target_exec target_os yasmexe
3219 enabled cross_compile || host_cc_default=$cc
3220 set_default host_cc
3221
3222 pkg_config_fail_message=""
3223 if ! $pkg_config --version >/dev/null 2>&1; then
3224     warn "$pkg_config not found, library detection may fail."
3225     pkg_config=false
3226 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3227     pkg_config_fail_message="
3228 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3229 fi
3230
3231 if test $doxygen != $doxygen_default && \
3232   ! $doxygen --version >/dev/null 2>&1; then
3233     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3234 fi
3235
3236 exesuf() {
3237     case $1 in
3238         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3239     esac
3240 }
3241
3242 EXESUF=$(exesuf $target_os)
3243 HOSTEXESUF=$(exesuf $host_os)
3244
3245 # set temporary file name
3246 : ${TMPDIR:=$TEMPDIR}
3247 : ${TMPDIR:=$TMP}
3248 : ${TMPDIR:=/tmp}
3249
3250 if [ -n "$tempprefix" ] ; then
3251     mktemp(){
3252         echo $tempprefix.${HOSTNAME}.${UID}
3253     }
3254 elif ! check_cmd mktemp -u XXXXXX; then
3255     # simple replacement for missing mktemp
3256     # NOT SAFE FOR GENERAL USE
3257     mktemp(){
3258         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3259     }
3260 fi
3261
3262 tmpfile(){
3263     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3264         (set -C; exec > $tmp) 2>/dev/null ||
3265         die "Unable to create temporary file in $TMPDIR."
3266     append TMPFILES $tmp
3267     eval $1=$tmp
3268 }
3269
3270 trap 'rm -f -- $TMPFILES' EXIT
3271
3272 tmpfile TMPASM .asm
3273 tmpfile TMPC   .c
3274 tmpfile TMPCPP .cpp
3275 tmpfile TMPE   $EXESUF
3276 tmpfile TMPH   .h
3277 tmpfile TMPM   .m
3278 tmpfile TMPO   .o
3279 tmpfile TMPS   .S
3280 tmpfile TMPSH  .sh
3281 tmpfile TMPV   .ver
3282
3283 unset -f mktemp
3284
3285 chmod +x $TMPE
3286
3287 # make sure we can execute files in $TMPDIR
3288 cat > $TMPSH 2>> $logfile <<EOF
3289 #! /bin/sh
3290 EOF
3291 chmod +x $TMPSH >> $logfile 2>&1
3292 if ! $TMPSH >> $logfile 2>&1; then
3293     cat <<EOF
3294 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3295 variable to another directory and make sure that it is not mounted noexec.
3296 EOF
3297     die "Sanity test failed."
3298 fi
3299
3300 armasm_flags(){
3301     for flag; do
3302         case $flag in
3303             # Filter out MSVC cl.exe options from cflags that shouldn't
3304             # be passed to gas-preprocessor
3305             -M[TD]*)                                            ;;
3306             *)                  echo $flag                      ;;
3307         esac
3308    done
3309 }
3310
3311 ccc_flags(){
3312     for flag; do
3313         case $flag in
3314             -std=c99)           echo -c99                       ;;
3315             -mcpu=*)            echo -arch ${flag#*=}           ;;
3316             -mieee)             echo -ieee                      ;;
3317             -O*|-fast)          echo $flag                      ;;
3318             -fno-math-errno)    echo -assume nomath_errno       ;;
3319             -g)                 echo -g3                        ;;
3320             -Wall)              echo -msg_enable level2         ;;
3321             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3322             -Wl,*)              echo $flag                      ;;
3323             -f*|-W*)                                            ;;
3324             *)                  echo $flag                      ;;
3325         esac
3326    done
3327 }
3328
3329 cparser_flags(){
3330     for flag; do
3331         case $flag in
3332             -Wno-switch)             echo -Wno-switch-enum ;;
3333             -Wno-format-zero-length) ;;
3334             -Wdisabled-optimization) ;;
3335             -Wno-pointer-sign)       echo -Wno-other ;;
3336             *)                       echo $flag ;;
3337         esac
3338     done
3339 }
3340
3341 msvc_common_flags(){
3342     for flag; do
3343         case $flag in
3344             # In addition to specifying certain flags under the compiler
3345             # specific filters, they must be specified here as well or else the
3346             # generic catch all at the bottom will print the original flag.
3347             -Wall)                ;;
3348             -std=c99)             ;;
3349             # Common flags
3350             -fomit-frame-pointer) ;;
3351             -g)                   echo -Z7 ;;
3352             -fno-math-errno)      ;;
3353             -fno-common)          ;;
3354             -fno-signed-zeros)    ;;
3355             -fPIC)                ;;
3356             -mthumb)              ;;
3357             -march=*)             ;;
3358             -lz)                  echo zlib.lib ;;
3359             -lavifil32)           echo vfw32.lib ;;
3360             -lavicap32)           echo vfw32.lib user32.lib ;;
3361             -l*)                  echo ${flag#-l}.lib ;;
3362             -L*)                  echo -libpath:${flag#-L} ;;
3363             *)                    echo $flag ;;
3364         esac
3365     done
3366 }
3367
3368 msvc_flags(){
3369     msvc_common_flags "$@"
3370     for flag; do
3371         case $flag in
3372             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3373                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3374                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3375                                        -wd4307 \
3376                                        -wd4273 -wd4554 -wd4701 ;;
3377         esac
3378     done
3379 }
3380
3381 icl_flags(){
3382     msvc_common_flags "$@"
3383     for flag; do
3384         case $flag in
3385             # Despite what Intel's documentation says -Wall, which is supported
3386             # on Windows, does enable remarks so disable them here.
3387             -Wall)                echo $flag -Qdiag-disable:remark ;;
3388             -std=c99)             echo -Qstd=c99 ;;
3389             -flto)                echo -ipo ;;
3390         esac
3391     done
3392 }
3393
3394 icc_flags(){
3395     for flag; do
3396         case $flag in
3397             -flto)                echo -ipo ;;
3398             *)                    echo $flag ;;
3399         esac
3400     done
3401 }
3402
3403 pgi_flags(){
3404     for flag; do
3405         case $flag in
3406             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3407             -fomit-frame-pointer) echo -Mnoframe ;;
3408             -g)                   echo -gopt ;;
3409             *)                    echo $flag ;;
3410         esac
3411     done
3412 }
3413
3414 suncc_flags(){
3415     for flag; do
3416         case $flag in
3417             -march=*|-mcpu=*)
3418                 case "${flag#*=}" in
3419                     native)                   echo -xtarget=native       ;;
3420                     v9|niagara)               echo -xarch=sparc          ;;
3421                     ultrasparc)               echo -xarch=sparcvis       ;;
3422                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3423                     i586|pentium)             echo -xchip=pentium        ;;
3424                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3425                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3426                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3427                     pentium4*)          echo -xtarget=pentium4           ;;
3428                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3429                     *-sse3)             echo -xarch=sse3                 ;;
3430                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3431                     bonnell)                   echo -xarch=ssse3         ;;
3432                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3433                     westmere)                  echo -xtarget=westmere    ;;
3434                     silvermont)                echo -xarch=sse4_2        ;;
3435                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3436                     core-avx*|ivybridge|haswell|broadwell)
3437                                                echo -xarch=avx           ;;
3438                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3439                     btver1)                    echo -xarch=amdsse4a      ;;
3440                     btver2|bdver*)             echo -xarch=avx           ;;
3441                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3442                     k8|opteron|athlon64|athlon-fx)
3443                                                echo -xarch=sse2a         ;;
3444                     athlon*)                   echo -xarch=pentium_proa  ;;
3445                 esac
3446                 ;;
3447             -std=c99)             echo -xc99              ;;
3448             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3449             -fPIC)                echo -KPIC -xcode=pic32 ;;
3450             -W*,*)                echo $flag              ;;
3451             -f*-*|-W*|-mimpure-text)                      ;;
3452             -shared)              echo -G                 ;;
3453             *)                    echo $flag              ;;
3454         esac
3455     done
3456 }
3457
3458 tms470_flags(){
3459     for flag; do
3460         case $flag in
3461             -march=*|-mcpu=*)
3462                 case "${flag#*=}" in
3463                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3464                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3465                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3466                     armv6*|arm11*)          echo -mv=6   ;;
3467                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3468                                             echo -mv=5e  ;;
3469                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3470                 esac
3471                 ;;
3472             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3473             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3474             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3475             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3476             -msoft-float)   echo --float_support=vfplib       ;;
3477             -O[0-3]|-mf=*)  echo $flag                        ;;
3478             -g)             echo -g -mn                       ;;
3479             -pds=*)         echo $flag                        ;;
3480             -D*|-I*)        echo $flag                        ;;
3481             --gcc|--abi=*)  echo $flag                        ;;
3482             -me)            echo $flag                        ;;
3483         esac
3484     done
3485 }
3486
3487 probe_cc(){
3488     pfx=$1
3489     _cc=$2
3490
3491     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3492     unset _ld_o _ldflags _ld_lib _ld_path
3493     unset _depflags _DEPCMD _DEPFLAGS
3494     _flags_filter=echo
3495
3496     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3497         true # no-op to avoid reading stdin in following checks
3498     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3499         _type=llvm_gcc
3500         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3501         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3502         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3503         _cflags_speed='-O3'
3504         _cflags_size='-Os'
3505     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3506         _type=gcc
3507         gcc_version=$($_cc --version | head -n1)
3508         gcc_basever=$($_cc -dumpversion)
3509         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3510         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3511         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3512         if ! $_cc -dumpversion | grep -q '^2\.'; then
3513             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3514         fi
3515         _cflags_speed='-O3'
3516         _cflags_size='-Os'
3517     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3518         _type=icc
3519         _ident=$($_cc --version | head -n1)
3520         _depflags='-MMD'
3521         _cflags_speed='-O3'
3522         _cflags_size='-Os'
3523         _cflags_noopt='-O1'
3524         _flags_filter=icc_flags
3525     elif $_cc -v 2>&1 | grep -q xlc; then
3526         _type=xlc
3527         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3528         _cflags_speed='-O5'
3529         _cflags_size='-O5 -qcompact'
3530     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3531         _type=ccc
3532         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3533         _DEPFLAGS='-M'
3534         _cflags_speed='-fast'
3535         _cflags_size='-O1'
3536         _flags_filter=ccc_flags
3537     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3538         test -d "$sysroot" || die "No valid sysroot specified."
3539         _type=armcc
3540         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3541         armcc_conf="$PWD/armcc.conf"
3542         $_cc --arm_linux_configure                 \
3543              --arm_linux_config_file="$armcc_conf" \
3544              --configure_sysroot="$sysroot"        \
3545              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3546              die "Error creating armcc configuration file."
3547         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3548         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3549         as_default="${cross_prefix}gcc"
3550         _depflags='-MMD'
3551         _cflags_speed='-O3'
3552         _cflags_size='-Os'
3553     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3554         _type=tms470
3555         _ident=$($_cc -version | head -n1 | tr -s ' ')
3556         _flags='--gcc --abi=eabi -me'
3557         _cc_e='-ppl -fe=$@'
3558         _cc_o='-fe=$@'
3559         _depflags='-ppa -ppd=$(@:.o=.d)'
3560         _cflags_speed='-O3 -mf=5'
3561         _cflags_size='-O3 -mf=2'
3562         _flags_filter=tms470_flags
3563     elif $_cc -v 2>&1 | grep -q clang; then
3564         _type=clang
3565         _ident=$($_cc --version | head -n1)
3566         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3567         _cflags_speed='-O3'
3568         _cflags_size='-Os'
3569     elif $_cc -V 2>&1 | grep -q Sun; then
3570         _type=suncc
3571         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3572         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3573         _DEPFLAGS='-xM1 -xc99'
3574         _ldflags='-std=c99'
3575         _cflags_speed='-O5'
3576         _cflags_size='-O5 -xspace'
3577         _flags_filter=suncc_flags
3578     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3579         _type=pathscale
3580         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3581         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3582         _cflags_speed='-O2'
3583         _cflags_size='-Os'
3584         _flags_filter='filter_out -Wdisabled-optimization'
3585     elif $_cc -v 2>&1 | grep -q Open64; then
3586         _type=open64
3587         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3588         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3589         _cflags_speed='-O2'
3590         _cflags_size='-Os'
3591         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3592     elif $_cc -V 2>&1 | grep -q Portland; then
3593         _type=pgi
3594         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3595         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3596         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3597         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3598         _cflags_noopt="-O"
3599         _flags_filter=pgi_flags
3600     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3601         _type=armasm
3602         _ident=$($_cc | head -n1)
3603         # 4509: "This form of conditional instruction is deprecated"
3604         _flags="-nologo -ignore 4509"
3605         _flags_filter=armasm_flags
3606     elif $_cc 2>&1 | grep -q Intel; then
3607         _type=icl
3608         _ident=$($_cc 2>&1 | head -n1)
3609         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3610         # Not only is O3 broken on 13.x+ but it is slower on all previous
3611         # versions (tested) as well.
3612         _cflags_speed="-O2"
3613         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3614         if $_cc 2>&1 | grep -q Linker; then
3615             _ld_o='-out:$@'
3616         else
3617             _ld_o='-Fe$@'
3618         fi
3619         _cc_o='-Fo$@'
3620         _cc_e='-P'
3621         _flags_filter=icl_flags
3622         _ld_lib='lib%.a'
3623         _ld_path='-libpath:'
3624         # -Qdiag-error to make icl error when seeing certain unknown arguments
3625         _flags='-nologo -Qdiag-error:4044,10157'
3626         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3627         # with MSVC which enables it by default.
3628         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3629         disable stripping
3630     elif $_cc 2>&1 | grep -q Microsoft; then
3631         _type=msvc
3632         _ident=$($_cc 2>&1 | head -n1)
3633         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3634         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3635         _cflags_speed="-O2"
3636         _cflags_size="-O1"
3637         if $_cc 2>&1 | grep -q Linker; then
3638             _ld_o='-out:$@'
3639         else
3640             _ld_o='-Fe$@'
3641         fi
3642         _cc_o='-Fo$@'
3643         _cc_e='-P -Fi$@'
3644         _flags_filter=msvc_flags
3645         _ld_lib='lib%.a'
3646         _ld_path='-libpath:'
3647         _flags='-nologo'
3648         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3649         disable stripping
3650     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3651         _type=cparser
3652         _ident=$($_cc --version | head -n1)
3653         _depflags='-MMD'
3654         _cflags_speed='-O4'
3655         _cflags_size='-O2'
3656         _flags_filter=cparser_flags
3657     fi
3658
3659     eval ${pfx}_type=\$_type
3660     eval ${pfx}_ident=\$_ident
3661 }
3662
3663 set_ccvars(){
3664     eval ${1}_C=\${_cc_c-\${${1}_C}}
3665     eval ${1}_E=\${_cc_e-\${${1}_E}}
3666     eval ${1}_O=\${_cc_o-\${${1}_O}}
3667
3668     if [ -n "$_depflags" ]; then
3669         eval ${1}_DEPFLAGS=\$_depflags
3670     else
3671         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3672         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3673         eval DEP${1}FLAGS=\$_flags
3674     fi
3675 }
3676
3677 probe_cc cc "$cc"
3678 cflags_filter=$_flags_filter
3679 cflags_speed=$_cflags_speed
3680 cflags_size=$_cflags_size
3681 cflags_noopt=$_cflags_noopt
3682 add_cflags $_flags $_cflags
3683 cc_ldflags=$_ldflags
3684 set_ccvars CC
3685
3686 probe_cc hostcc "$host_cc"
3687 host_cflags_filter=$_flags_filter
3688 add_host_cflags  $_flags $_cflags
3689 set_ccvars HOSTCC
3690
3691 test -n "$cc_type" && enable $cc_type ||
3692     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3693
3694 : ${as_default:=$cc}
3695 : ${dep_cc_default:=$cc}
3696 : ${ld_default:=$cc}
3697 : ${host_ld_default:=$host_cc}
3698 set_default ar as dep_cc ld host_ld windres
3699
3700 probe_cc as "$as"
3701 asflags_filter=$_flags_filter
3702 add_asflags $_flags $_cflags
3703 set_ccvars AS
3704
3705 probe_cc ld "$ld"
3706 ldflags_filter=$_flags_filter
3707 add_ldflags $_flags $_ldflags
3708 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3709 LD_O=${_ld_o-$LD_O}
3710 LD_LIB=${_ld_lib-$LD_LIB}
3711 LD_PATH=${_ld_path-$LD_PATH}
3712
3713 probe_cc hostld "$host_ld"
3714 host_ldflags_filter=$_flags_filter
3715 add_host_ldflags $_flags $_ldflags
3716 HOSTLD_O=${_ld_o-$HOSTLD_O}
3717
3718 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3719     probe_cc depcc "$dep_cc"
3720     CCDEP=${_DEPCMD:-$DEPCMD}
3721     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3722     DEPCCFLAGS=$_flags
3723 fi
3724
3725 if $ar 2>&1 | grep -q Microsoft; then
3726     arflags="-nologo"
3727     ar_o='-out:$@'
3728 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3729     arflags="rq"
3730     ar_o='$@'
3731 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3732     arflags='-Xany -r -c'
3733     ar_o='$@'
3734 elif $ar 2>&1 | grep -q "\[D\] "; then
3735     arflags="rcD"
3736     ar_o='$@'
3737 else
3738     arflags="rc"
3739     ar_o='$@'
3740 fi
3741
3742 add_cflags $extra_cflags
3743 add_cxxflags $extra_cxxflags
3744 add_asflags $extra_cflags
3745
3746 if test -n "$sysroot"; then
3747     case "$cc_type" in
3748         gcc|llvm_gcc|clang)
3749             add_cppflags --sysroot="$sysroot"
3750             add_ldflags --sysroot="$sysroot"
3751 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3752             add_cppflags -isysroot "$sysroot"
3753             add_ldflags -isysroot "$sysroot"
3754         ;;
3755         tms470)
3756             add_cppflags -I"$sysinclude"
3757             add_ldflags  --sysroot="$sysroot"
3758         ;;
3759     esac
3760 fi
3761
3762 if test "$cpu" = host; then
3763     enabled cross_compile &&
3764         die "--cpu=host makes no sense when cross-compiling."
3765
3766     case "$cc_type" in
3767         gcc|llvm_gcc)
3768             check_native(){
3769                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3770                 sed -n "/cc1.*$1=/{
3771                             s/.*$1=\\([^ ]*\\).*/\\1/
3772                             p
3773                             q
3774                         }" $TMPE
3775             }
3776             cpu=$(check_native -march || check_native -mcpu)
3777         ;;
3778     esac
3779
3780     test "${cpu:-host}" = host &&
3781         die "--cpu=host not supported with compiler $cc"
3782 fi
3783
3784 # Deal with common $arch aliases
3785 case "$arch" in
3786     aarch64|arm64)
3787         arch="aarch64"
3788     ;;
3789     arm*|iPad*|iPhone*)
3790         arch="arm"
3791     ;;
3792     mips*|IP*)
3793         arch="mips"
3794     ;;
3795     parisc*|hppa*)
3796         arch="parisc"
3797     ;;
3798     "Power Macintosh"|ppc*|powerpc*)
3799         arch="ppc"
3800     ;;
3801     s390|s390x)
3802         arch="s390"
3803     ;;
3804     sh4|sh)
3805         arch="sh4"
3806     ;;
3807     sun4u|sparc*)
3808         arch="sparc"
3809     ;;
3810     tilegx|tile-gx)
3811         arch="tilegx"
3812     ;;
3813     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3814         arch="x86"
3815     ;;
3816 esac
3817
3818 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3819 enable $arch
3820
3821 # Add processor-specific flags
3822 if enabled aarch64; then
3823
3824     case $cpu in
3825         armv*)
3826             cpuflags="-march=$cpu"
3827         ;;
3828         *)
3829             cpuflags="-mcpu=$cpu"
3830         ;;
3831     esac
3832
3833 elif enabled alpha; then
3834
3835     cpuflags="-mcpu=$cpu"
3836
3837 elif enabled arm; then
3838
3839     check_arm_arch() {
3840         check_cpp_condition stddef.h \
3841             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3842             $cpuflags
3843     }
3844
3845     probe_arm_arch() {
3846         if   check_arm_arch 4;        then echo armv4;
3847         elif check_arm_arch 4T;       then echo armv4t;
3848         elif check_arm_arch 5;        then echo armv5;
3849         elif check_arm_arch 5E;       then echo armv5e;
3850         elif check_arm_arch 5T;       then echo armv5t;
3851         elif check_arm_arch 5TE;      then echo armv5te;
3852         elif check_arm_arch 5TEJ;     then echo armv5te;
3853         elif check_arm_arch 6;        then echo armv6;
3854         elif check_arm_arch 6J;       then echo armv6j;
3855         elif check_arm_arch 6K;       then echo armv6k;
3856         elif check_arm_arch 6Z;       then echo armv6z;
3857         elif check_arm_arch 6ZK;      then echo armv6zk;
3858         elif check_arm_arch 6T2;      then echo armv6t2;
3859         elif check_arm_arch 7;        then echo armv7;
3860         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3861         elif check_arm_arch 7S;       then echo armv7-a;
3862         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3863         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3864         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3865         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3866         fi
3867     }
3868
3869     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3870
3871     case $cpu in
3872         armv*)
3873             cpuflags="-march=$cpu"
3874             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3875         ;;
3876         *)
3877             cpuflags="-mcpu=$cpu"
3878             case $cpu in
3879                 cortex-a*)                               subarch=armv7a  ;;
3880                 cortex-r*)                               subarch=armv7r  ;;
3881                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3882                 arm11*)                                  subarch=armv6   ;;
3883                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3884                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3885                 *)                             subarch=$(probe_arm_arch) ;;
3886             esac
3887         ;;
3888     esac
3889
3890     case "$subarch" in
3891         armv5t*)    enable fast_clz                ;;
3892         armv[6-8]*)
3893             enable fast_clz
3894             disabled fast_unaligned || enable fast_unaligned
3895             ;;
3896     esac
3897
3898 elif enabled avr32; then
3899
3900     case $cpu in
3901         ap7[02]0[0-2])
3902             subarch="avr32_ap"
3903             cpuflags="-mpart=$cpu"
3904         ;;
3905         ap)
3906             subarch="avr32_ap"
3907             cpuflags="-march=$cpu"
3908         ;;
3909         uc3[ab]*)
3910             subarch="avr32_uc"
3911             cpuflags="-mcpu=$cpu"
3912         ;;
3913         uc)
3914             subarch="avr32_uc"
3915             cpuflags="-march=$cpu"
3916         ;;
3917     esac
3918
3919 elif enabled bfin; then
3920
3921     cpuflags="-mcpu=$cpu"
3922
3923 elif enabled mips; then
3924
3925     cpuflags="-march=$cpu"
3926
3927     case $cpu in
3928         24kc)
3929             disable mips32r5
3930             disable mips64r6
3931             disable mipsfpu
3932             disable mipsdspr1
3933             disable mipsdspr2
3934             disable msa
3935         ;;
3936         24kf*)
3937             disable mips32r5
3938             disable mips64r6
3939             disable mipsdspr1
3940             disable mipsdspr2
3941             disable msa
3942         ;;
3943         24kec|34kc|1004kc)
3944             disable mips32r5
3945             disable mips64r6
3946             disable mipsfpu
3947             disable mipsdspr2
3948             disable msa
3949         ;;
3950         24kef*|34kf*|1004kf*)
3951             disable mips32r5
3952             disable mips64r6
3953             disable mipsdspr2
3954             disable msa
3955         ;;
3956         74kc)
3957             disable mips32r5
3958             disable mips64r6
3959             disable mipsfpu
3960             disable msa
3961         ;;
3962         74kf)
3963             disable mips32r5
3964             disable mips64r6
3965             disable msa
3966         ;;
3967         p5600)
3968             disable mips64r6
3969             disable mipsdspr1
3970             disable mipsdspr2
3971
3972             check_cflags "-mtune=p5600"
3973         ;;
3974         i6400)
3975             disable mips32r5
3976             disable mipsdspr1
3977             disable mipsdspr2
3978             disable mipsfpu
3979
3980             check_cflags "-mtune=i6400 -mabi=64"
3981             check_ldflags "-mabi=64"
3982         ;;
3983         loongson*)
3984             disable mipsfpu
3985             disable mips32r2
3986             disable mips32r5
3987             disable mips64r6
3988             disable mipsdspr1
3989             disable mipsdspr2
3990             disable msa
3991             enable local_aligned_8 local_aligned_16 local_aligned_32
3992             enable simd_align_16
3993             enable fast_64bit
3994             enable fast_clz
3995             enable fast_cmov
3996             enable fast_unaligned
3997             disable aligned_stack
3998             case $cpu in
3999                 loongson3*)
4000                     cpuflags="-march=loongson3a -mhard-float"
4001                 ;;
4002                 loongson2e)
4003                     cpuflags="-march=loongson2e -mhard-float"
4004                 ;;
4005                 loongson2f)
4006                     cpuflags="-march=loongson2f -mhard-float"
4007                 ;;
4008             esac
4009         ;;
4010         generic)
4011             disable mips32r5
4012             disable mips64r6
4013             disable msa
4014         ;;
4015     esac
4016
4017 elif enabled ppc; then
4018
4019     disable ldbrx
4020
4021     case $(tolower $cpu) in
4022         601|ppc601|powerpc601)
4023             cpuflags="-mcpu=601"
4024             disable altivec
4025         ;;
4026         603*|ppc603*|powerpc603*)
4027             cpuflags="-mcpu=603"
4028             disable altivec
4029         ;;
4030         604*|ppc604*|powerpc604*)
4031             cpuflags="-mcpu=604"
4032             disable altivec
4033         ;;
4034         g3|75*|ppc75*|powerpc75*)
4035             cpuflags="-mcpu=750"
4036             disable altivec
4037         ;;
4038         g4|745*|ppc745*|powerpc745*)
4039             cpuflags="-mcpu=7450"
4040             disable vsx
4041         ;;
4042         74*|ppc74*|powerpc74*)
4043             cpuflags="-mcpu=7400"
4044             disable vsx
4045         ;;
4046         g5|970|ppc970|powerpc970)
4047             cpuflags="-mcpu=970"
4048             disable vsx
4049         ;;
4050         power[3-6]*)
4051             cpuflags="-mcpu=$cpu"
4052             disable vsx
4053         ;;
4054         power[7-8]*)
4055             cpuflags="-mcpu=$cpu"
4056         ;;
4057         cell)
4058             cpuflags="-mcpu=cell"
4059             enable ldbrx
4060             disable vsx
4061         ;;
4062         e500mc)
4063             cpuflags="-mcpu=e500mc"
4064             disable altivec
4065         ;;
4066         e500v2)
4067             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4068             disable altivec
4069             disable dcbzl
4070         ;;
4071         e500)
4072             cpuflags="-mcpu=8540 -mhard-float"
4073             disable altivec
4074             disable dcbzl
4075         ;;
4076     esac
4077
4078 elif enabled sparc; then
4079
4080     case $cpu in
4081         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4082             cpuflags="-mcpu=$cpu"
4083         ;;
4084         ultrasparc*|niagara[234])
4085             cpuflags="-mcpu=$cpu"
4086         ;;
4087     esac
4088
4089 elif enabled x86; then
4090
4091     case $cpu in
4092         i[345]86|pentium)
4093             cpuflags="-march=$cpu"
4094             disable i686
4095             disable mmx
4096         ;;
4097         # targets that do NOT support nopl and conditional mov (cmov)
4098         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4099             cpuflags="-march=$cpu"
4100             disable i686
4101         ;;
4102         # targets that do support nopl and conditional mov (cmov)
4103         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4104         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4105             cpuflags="-march=$cpu"
4106             enable i686
4107             enable fast_cmov
4108         ;;
4109         # targets that do support conditional mov but on which it's slow
4110         pentium4|pentium4m|prescott|nocona)
4111             cpuflags="-march=$cpu"
4112             enable i686
4113             disable fast_cmov
4114         ;;
4115     esac
4116
4117 fi
4118
4119 if [ "$cpu" != generic ]; then
4120     add_cflags  $cpuflags
4121     add_asflags $cpuflags
4122 fi
4123
4124 # compiler sanity check
4125 check_exec <<EOF
4126 int main(void){ return 0; }
4127 EOF
4128 if test "$?" != 0; then
4129     echo "$cc is unable to create an executable file."
4130     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4131         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4132         echo "Only do this if you know what cross compiling means."
4133     fi
4134     die "C compiler test failed."
4135 fi
4136
4137 add_cppflags -D_ISOC99_SOURCE
4138 add_cxxflags -D__STDC_CONSTANT_MACROS
4139 check_cflags -std=c99
4140 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4141 #include <stdlib.h>
4142 EOF
4143 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4144 #include <stdlib.h>
4145 EOF
4146
4147 add_host_cppflags -D_ISOC99_SOURCE
4148 check_host_cflags -std=c99
4149 check_host_cflags -Wall
4150 check_host_cflags -O3
4151
4152 check_64bit(){
4153     arch32=$1
4154     arch64=$2
4155     expr=$3
4156     check_code cc "" "int test[2*($expr) - 1]" &&
4157         subarch=$arch64 || subarch=$arch32
4158 }
4159
4160 case "$arch" in
4161     aarch64|alpha|ia64)
4162         spic=$shared
4163     ;;
4164     mips)
4165         check_64bit mips mips64 '_MIPS_SIM > 1'
4166         spic=$shared
4167     ;;
4168     parisc)
4169         check_64bit parisc parisc64 'sizeof(void *) > 4'
4170         spic=$shared
4171     ;;
4172     ppc)
4173         check_64bit ppc ppc64 'sizeof(void *) > 4'
4174         spic=$shared
4175     ;;
4176     s390)
4177         check_64bit s390 s390x 'sizeof(void *) > 4'
4178         spic=$shared
4179     ;;
4180     sparc)
4181         check_64bit sparc sparc64 'sizeof(void *) > 4'
4182         spic=$shared
4183     ;;
4184     x86)
4185         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4186         # Treat x32 as x64 for now. Note it also needs spic=$shared
4187         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4188             subarch=x86_64
4189         if test "$subarch" = "x86_64"; then
4190             spic=$shared
4191         fi
4192     ;;
4193     ppc)
4194         check_cc <<EOF && subarch="ppc64"
4195         int test[(int)sizeof(char*) - 7];
4196 EOF
4197     ;;
4198 esac
4199
4200 enable $subarch
4201 enabled spic && enable_weak pic
4202
4203 # OS specific
4204 case $target_os in
4205     aix)
4206         SHFLAGS=-shared
4207         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4208         enabled shared && add_ldflags -Wl,-brtl
4209         ;;
4210     android)
4211         disable symver
4212         enable section_data_rel_ro
4213         SLIB_INSTALL_NAME='$(SLIBNAME)'
4214         SLIB_INSTALL_LINKS=
4215         # soname not set on purpose
4216         SHFLAGS=-shared
4217         ;;
4218     haiku)
4219         prefix_default="/boot/common"
4220         network_extralibs="-lnetwork"
4221         host_libs=
4222         ;;
4223     sunos)
4224         SHFLAGS='-shared -Wl,-h,$$(@F)'
4225         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4226         network_extralibs="-lsocket -lnsl"
4227         add_cppflags -D__EXTENSIONS__
4228         # When using suncc to build, the Solaris linker will mark
4229         # an executable with each instruction set encountered by
4230         # the Solaris assembler.  As our libraries contain their own
4231         # guards for processor-specific code, instead suppress
4232         # generation of the HWCAPS ELF section on Solaris x86 only.
4233         enabled_all suncc x86 &&
4234             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4235             add_ldflags -Wl,-M,mapfile
4236         nm_default='nm -P -g'
4237         ;;
4238     netbsd)
4239         disable symver
4240         oss_indev_extralibs="-lossaudio"
4241         oss_outdev_extralibs="-lossaudio"
4242         enabled gcc || check_ldflags -Wl,-zmuldefs
4243         ;;
4244     openbsd|bitrig)
4245         disable symver
4246         SHFLAGS='-shared'
4247         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4248         SLIB_INSTALL_LINKS=
4249         oss_indev_extralibs="-lossaudio"
4250         oss_outdev_extralibs="-lossaudio"
4251         ;;
4252     dragonfly)
4253         disable symver
4254         ;;
4255     freebsd)
4256         ;;
4257     bsd/os)
4258         add_extralibs -lpoll -lgnugetopt
4259         strip="strip -d"
4260         ;;
4261     darwin)
4262         enabled ppc && add_asflags -force_cpusubtype_ALL
4263         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4264         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4265         strip="${strip} -x"
4266         add_ldflags -Wl,-dynamic,-search_paths_first
4267         SLIBSUF=".dylib"
4268         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4269         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4270         objformat="macho"
4271         enabled x86_64 && objformat="macho64"
4272         enabled_any pic shared x86_64 ||
4273             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4274         ;;
4275     mingw32*)
4276         if test $target_os = "mingw32ce"; then
4277             disable network
4278         else
4279             target_os=mingw32
4280         fi
4281         LIBTARGET=i386
4282         if enabled x86_64; then
4283             LIBTARGET="i386:x86-64"
4284         elif enabled arm; then
4285             LIBTARGET=arm-wince
4286         fi
4287         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4288         check_ldflags -Wl,--nxcompat
4289         check_ldflags -Wl,--dynamicbase
4290         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4291         shlibdir_default="$bindir_default"
4292         SLIBPREF=""
4293         SLIBSUF=".dll"
4294         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4295         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4296         dlltool="${cross_prefix}dlltool"
4297         if check_cmd lib.exe -list; then
4298             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4299             if enabled x86_64; then
4300                 LIBTARGET=x64
4301             fi
4302         elif check_cmd $dlltool --version; then
4303             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4304         fi
4305         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4306         SLIB_INSTALL_LINKS=
4307         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4308         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4309         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4310         objformat="win32"
4311         ranlib=:
4312         enable dos_paths
4313         ;;
4314     win32|win64)
4315         disable symver
4316         if enabled shared; then
4317             # Link to the import library instead of the normal static library
4318             # for shared libs.
4319             LD_LIB='%.lib'
4320             # Cannot build both shared and static libs with MSVC or icl.
4321             disable static
4322         fi
4323         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4324         shlibdir_default="$bindir_default"
4325         SLIBPREF=""
4326         SLIBSUF=".dll"
4327         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4328         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4329         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4330         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4331         SLIB_INSTALL_LINKS=
4332         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4333         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4334         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4335         objformat="win32"
4336         ranlib=:
4337         enable dos_paths
4338         ;;
4339     cygwin*)
4340         target_os=cygwin
4341         shlibdir_default="$bindir_default"
4342         SLIBPREF="cyg"
4343         SLIBSUF=".dll"
4344         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4345         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4346         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4347         SLIB_INSTALL_LINKS=
4348         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4349         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4350         objformat="win32"
4351         enable dos_paths
4352         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4353         ;;
4354     *-dos|freedos|opendos)
4355         network_extralibs="-lsocket"
4356         objformat="coff"
4357         enable dos_paths
4358         add_cppflags -U__STRICT_ANSI__
4359         ;;
4360     linux)
4361         enable dv1394
4362         enable section_data_rel_ro
4363         ;;
4364     irix*)
4365         target_os=irix
4366         ranlib="echo ignoring ranlib"
4367         ;;
4368     os/2*)
4369         strip="lxlite -CS"
4370         ln_s="cp -f"
4371         objformat="aout"
4372         add_cppflags -D_GNU_SOURCE
4373         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4374         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4375         LIBSUF="_s.a"
4376         SLIBPREF=""
4377         SLIBSUF=".dll"
4378         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4379         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4380         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4381             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4382             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4383             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4384             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4385         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4386             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4387         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4388         enable dos_paths
4389         enable_weak os2threads
4390         ;;
4391     gnu/kfreebsd)
4392         add_cppflags -D_BSD_SOURCE
4393         ;;
4394     gnu)
4395         ;;
4396     qnx)
4397         add_cppflags -D_QNX_SOURCE
4398         network_extralibs="-lsocket"
4399         ;;
4400     symbian)
4401         SLIBSUF=".dll"
4402         enable dos_paths
4403         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4404         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4405         add_ldflags -Wl,--target1-abs,--no-undefined \
4406                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4407                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4408         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4409                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4410                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4411         ;;
4412     osf1)
4413         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4414         ;;
4415     minix)
4416         ;;
4417     plan9)
4418         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4419                      -D_REENTRANT_SOURCE        \
4420                      -D_RESEARCH_SOURCE         \
4421                      -DFD_SETSIZE=96            \
4422                      -DHAVE_SOCK_OPTS
4423         add_compat strtod.o strtod=avpriv_strtod
4424         network_extralibs='-lbsd'
4425         exeobjs=compat/plan9/main.o
4426         disable ffserver
4427         cp_f='cp'
4428         ;;
4429     none)
4430         ;;
4431     *)
4432         die "Unknown OS '$target_os'."
4433         ;;
4434 esac
4435
4436 # determine libc flavour
4437
4438 probe_libc(){
4439     pfx=$1
4440     pfx_no_=${pfx%_}
4441     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4442     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4443         eval ${pfx}libc_type=uclibc
4444         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4445     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4446         eval ${pfx}libc_type=glibc
4447         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4448     # MinGW headers can be installed on Cygwin, so check for newlib first.
4449     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4450         eval ${pfx}libc_type=newlib
4451         add_${pfx}cppflags -U__STRICT_ANSI__
4452     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4453     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4454         eval ${pfx}libc_type=mingw64
4455         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4456             add_compat msvcrt/snprintf.o
4457             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4458         fi
4459         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4460         eval test \$${pfx_no_}cc_type = "gcc" &&
4461             add_${pfx}cppflags -D__printf__=__gnu_printf__
4462     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4463          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4464         eval ${pfx}libc_type=mingw32
4465         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4466             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4467             die "ERROR: MinGW32 runtime version must be >= 3.15."
4468         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4469         eval test \$${pfx_no_}cc_type = "gcc" &&
4470             add_${pfx}cppflags -D__printf__=__gnu_printf__
4471     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4472         eval ${pfx}libc_type=msvcrt
4473         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4474             if [ "$pfx" = host_ ]; then
4475                 add_host_cppflags -Dsnprintf=_snprintf
4476             else
4477                 add_compat strtod.o strtod=avpriv_strtod
4478                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4479                                              _snprintf=avpriv_snprintf  \
4480                                              vsnprintf=avpriv_vsnprintf
4481             fi
4482         fi
4483         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4484         # 0x601 by default unless something else is set by the user.
4485         # This can easily lead to us detecting functions only present
4486         # in such new versions and producing binaries requiring windows 7.0.
4487         # Therefore explicitly set the default to XP unless the user has
4488         # set something else on the command line.
4489         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4490             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4491     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4492         eval ${pfx}libc_type=klibc
4493     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4494         eval ${pfx}libc_type=bionic
4495     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4496         eval ${pfx}libc_type=solaris
4497         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4498     fi
4499     check_${pfx}cc <<EOF
4500 #include <time.h>
4501 void *v = localtime_r;
4502 EOF
4503 test "$?" != 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
4504 #include <time.h>
4505 void *v = localtime_r;
4506 EOF
4507
4508 }
4509
4510 probe_libc
4511 test -n "$libc_type" && enable libc_$libc_type
4512 probe_libc host_
4513 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4514
4515 case $libc_type in
4516     bionic)
4517         add_compat strtod.o strtod=avpriv_strtod
4518         ;;
4519 esac
4520
4521 # hacks for compiler/libc/os combinations
4522
4523 if enabled_all tms470 libc_glibc; then
4524     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4525     add_cppflags -D__USER_LABEL_PREFIX__=
4526     add_cppflags -D__builtin_memset=memset
4527     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4528     add_cflags   -pds=48    # incompatible redefinition of macro
4529 fi
4530
4531 if enabled_all ccc libc_glibc; then
4532     add_ldflags -Wl,-z,now  # calls to libots crash without this
4533 fi
4534
4535 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4536     add_cppflags '-I\$(SRC_PATH)/compat/float'
4537
4538 esc(){
4539     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4540 }
4541
4542 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4543
4544 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4545
4546 set_default libdir
4547 : ${shlibdir_default:="$libdir"}
4548 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4549
4550 set_default $PATHS_LIST
4551 set_default nm
4552
4553 # we need to build at least one lib type
4554 if ! enabled_any static shared; then
4555     cat <<EOF
4556 At least one library type must be built.
4557 Specify --enable-static to build the static libraries or --enable-shared to
4558 build the shared libraries as well. To only build the shared libraries specify
4559 --disable-static in addition to --enable-shared.
4560 EOF
4561     exit 1;
4562 fi
4563
4564 die_license_disabled() {
4565     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4566 }
4567
4568 die_license_disabled_gpl() {
4569     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4570 }
4571
4572 die_license_disabled gpl frei0r
4573 die_license_disabled gpl libcdio
4574 die_license_disabled gpl libsmbclient
4575 die_license_disabled gpl libutvideo
4576 die_license_disabled gpl libvidstab
4577 die_license_disabled gpl libx264
4578 die_license_disabled gpl libx265
4579 die_license_disabled gpl libxavs
4580 die_license_disabled gpl libxvid
4581 die_license_disabled gpl libzvbi
4582 die_license_disabled gpl x11grab
4583
4584 die_license_disabled nonfree libaacplus
4585 die_license_disabled nonfree libfaac
4586 die_license_disabled nonfree nvenc
4587 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4588 enabled gpl && die_license_disabled_gpl nonfree openssl
4589
4590 die_license_disabled version3 libopencore_amrnb
4591 die_license_disabled version3 libopencore_amrwb
4592 die_license_disabled version3 libsmbclient
4593 die_license_disabled version3 libvo_aacenc
4594 die_license_disabled version3 libvo_amrwbenc
4595
4596 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4597
4598 disabled optimizations || check_cflags -fomit-frame-pointer
4599
4600 enable_weak_pic() {
4601     disabled pic && return
4602     enable pic
4603     add_cppflags -DPIC
4604     case "$target_os" in
4605     mingw*|cygwin*)
4606         ;;
4607     *)
4608         add_cflags -fPIC
4609         ;;
4610     esac
4611     add_asflags  -fPIC
4612 }
4613
4614 enabled pic && enable_weak_pic
4615
4616 check_cc <<EOF || die "Symbol mangling check failed."
4617 int ff_extern;
4618 EOF
4619 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4620 extern_prefix=${sym%%ff_extern*}
4621
4622 check_cc <<EOF && enable_weak inline_asm
4623 void foo(void) { __asm__ volatile ("" ::); }
4624 EOF
4625
4626 _restrict=
4627 for restrict_keyword in restrict __restrict__ __restrict; do
4628     check_cc <<EOF && _restrict=$restrict_keyword && break
4629 void foo(char * $restrict_keyword p);
4630 EOF
4631 done
4632
4633 check_cc <<EOF && enable pragma_deprecated
4634 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4635 EOF
4636
4637 check_cc <<EOF && enable attribute_packed
4638 struct { int x; } __attribute__((packed)) x;
4639 EOF
4640
4641 check_cc <<EOF && enable attribute_may_alias
4642 union { int x; } __attribute__((may_alias)) x;
4643 EOF
4644
4645 check_cc <<EOF || die "endian test failed"
4646 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4647 EOF
4648 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4649
4650 if ! enabled ppc64 || enabled bigendian; then
4651     disable vsx
4652 fi
4653
4654 check_gas() {
4655     log "check_gas using '$as' as AS"
4656     # :vararg is used on aarch64, arm and ppc altivec
4657     check_as <<EOF || return 1
4658 .macro m n, y:vararg=0
4659 \n: .int \y
4660 .endm
4661 m x
4662 EOF
4663     # .altmacro is only used in arm asm
4664     ! enabled arm || check_as <<EOF || return 1
4665 .altmacro
4666 EOF
4667     enable gnu_as
4668     return 0
4669 }
4670
4671 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4672     nogas=:
4673     enabled_any arm aarch64 && nogas=die
4674     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4675     as_noop=-v
4676
4677     case $as_type in
4678         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4679         gcc)  gaspp_as_type=gas ;;
4680         *)    gaspp_as_type=$as_type ;;
4681     esac
4682
4683     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4684
4685     test "${as#*gas-preprocessor.pl}" != "$as" ||
4686     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4687         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4688
4689     if ! check_gas ; then
4690         as=${gas:=$as}
4691         check_gas || \
4692             $nogas "GNU assembler not found, install/update gas-preprocessor"
4693     fi
4694
4695     check_as <<EOF && enable as_func
4696 .func test
4697 .endfunc
4698 EOF
4699 fi
4700
4701 check_inline_asm inline_asm_labels '"1:\n"'
4702
4703 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4704
4705 if enabled aarch64; then
4706     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4707     # internal assembler in clang 3.3 does not support this instruction
4708     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4709     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4710
4711     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4712
4713 elif enabled alpha; then
4714
4715     check_cflags -mieee
4716
4717 elif enabled arm; then
4718
4719     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4720 float func(float a, float b){ return a+b; }
4721 EOF
4722
4723     enabled thumb && check_cflags -mthumb || check_cflags -marm
4724
4725     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4726         enable vfp_args
4727     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4728         case "${cross_prefix:-$cc}" in
4729             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4730             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4731 __asm__ (".eabi_attribute 28, 1");
4732 int main(void) { return 0; }
4733 EOF
4734         esac
4735         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4736     fi
4737
4738     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4739     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4740     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4741     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4742     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4743     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4744     enabled setend  && check_insn setend  'setend be'
4745
4746     [ $target_os = linux ] || [ $target_os = android ] ||
4747         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4748             $ARCH_EXT_LIST_ARM
4749
4750     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4751
4752     check_as <<EOF && enable as_dn_directive
4753 ra .dn d0.i16
4754 .unreq ra
4755 EOF
4756
4757     # llvm's integrated assembler supports .object_arch from llvm 3.5
4758     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4759 .object_arch armv4
4760 EOF
4761
4762     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4763
4764 elif enabled mips; then
4765
4766     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
4767     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4768     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
4769
4770     # Enable minimum ISA based on selected options
4771     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4772         add_cflags "-mips64r2"
4773         add_asflags "-mips64r2"
4774     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
4775         add_cflags "-mips64"
4776         add_asflags "-mips64"
4777     elif enabled mipsdspr1 || enabled mipsdspr2; then
4778         add_cflags "-mips32r2 -mfp32"
4779         add_asflags "-mips32r2 -mfp32"
4780     elif enabled mips32r5 || enabled mips64r6; then
4781         check_cflags "-mfp64"
4782         check_ldflags "-mfp64"
4783     fi
4784
4785     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4786      check_ldflags "-mips32r5" &&
4787      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4788     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4789      check_ldflags "-mips64r6" &&
4790      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4791     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4792      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4793     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4794      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4795     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4796      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4797     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4798      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4799
4800     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4801     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4802     enabled msa && add_asflags "-mmsa"
4803
4804 elif enabled parisc; then
4805
4806     if enabled gcc; then
4807         case $($cc -dumpversion) in
4808             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4809         esac
4810     fi
4811
4812 elif enabled ppc; then
4813
4814     enable local_aligned_8 local_aligned_16 local_aligned_32
4815
4816     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4817     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4818     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4819     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4820
4821     # AltiVec flags: The FSF version of GCC differs from the Apple version
4822     if enabled altivec; then
4823         check_cflags -maltivec -mabi=altivec &&
4824         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4825         check_cflags -faltivec
4826
4827         # check if our compiler supports Motorola AltiVec C API
4828         check_cc <<EOF || disable altivec
4829 $inc_altivec_h
4830 int main(void) {
4831     vector signed int v1 = (vector signed int) { 0 };
4832     vector signed int v2 = (vector signed int) { 1 };
4833     v1 = vec_add(v1, v2);
4834     return 0;
4835 }
4836 EOF
4837
4838         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4839     fi
4840
4841     if enabled vsx; then
4842         check_cflags -mvsx &&
4843         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4844     fi
4845
4846     if enabled power8; then
4847         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4848     fi
4849
4850 elif enabled x86; then
4851
4852     check_builtin rdtsc    intrin.h   "__rdtsc()"
4853     check_builtin mm_empty mmintrin.h "_mm_empty()"
4854
4855     enable local_aligned_8 local_aligned_16 local_aligned_32
4856
4857     # check whether EBP is available on x86
4858     # As 'i' is stored on the stack, this program will crash
4859     # if the base pointer is used to access it because the
4860     # base pointer is cleared in the inline assembly code.
4861     check_exec_crash <<EOF && enable ebp_available
4862 volatile int i=0;
4863 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4864 return i;
4865 EOF
4866
4867     # check whether EBX is available on x86
4868     check_inline_asm ebx_available '""::"b"(0)' &&
4869         check_inline_asm ebx_available '"":::"%ebx"'
4870
4871     # check whether xmm clobbers are supported
4872     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4873
4874     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4875         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4876
4877     # check whether binutils is new enough to compile SSSE3/MMXEXT
4878     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4879     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4880
4881     if ! disabled_any asm mmx yasm; then
4882         if check_cmd $yasmexe --version; then
4883             enabled x86_64 && yasm_extra="-m amd64"
4884             yasm_debug="-g dwarf2"
4885         elif check_cmd nasm -v; then
4886             yasmexe=nasm
4887             yasm_debug="-g -F dwarf"
4888             if enabled x86_64; then
4889                 case "$objformat" in
4890                     elf)   objformat=elf64 ;;
4891                     win32) objformat=win64 ;;
4892                 esac
4893             fi
4894         fi
4895
4896         YASMFLAGS="-f $objformat $yasm_extra"
4897         enabled pic               && append YASMFLAGS "-DPIC"
4898         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4899         case "$objformat" in
4900             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4901         esac
4902
4903         check_yasm "movbe ecx, [5]" && enable yasm ||
4904             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4905         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4906         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4907         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4908         check_yasm "CPU amdnop" || disable cpunop
4909     fi
4910
4911     case "$cpu" in
4912         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4913             disable fast_clz
4914         ;;
4915     esac
4916
4917 fi
4918
4919 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4920
4921 check_ldflags -Wl,--as-needed
4922 check_ldflags -Wl,-z,noexecstack
4923
4924 if check_func dlopen; then
4925     ldl=
4926 elif check_func dlopen -ldl; then
4927     ldl=-ldl
4928 fi
4929
4930 frei0r_filter_extralibs='$ldl'
4931 frei0r_src_filter_extralibs='$ldl'
4932 ladspa_filter_extralibs='$ldl'
4933 nvenc_encoder_extralibs='$ldl'
4934
4935 if ! disabled network; then
4936     check_func getaddrinfo $network_extralibs
4937     check_func getservbyport $network_extralibs
4938     check_func inet_aton $network_extralibs
4939
4940     check_type netdb.h "struct addrinfo"
4941     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4942     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4943     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4944     check_type poll.h "struct pollfd"
4945     check_type netinet/sctp.h "struct sctp_event_subscribe"
4946     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4947     check_type netinet/in.h "struct sockaddr_in6"
4948     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4949     check_type "sys/types.h sys/socket.h" socklen_t
4950
4951     # Prefer arpa/inet.h over winsock2
4952     if check_header arpa/inet.h ; then
4953         check_func closesocket
4954     elif check_header winsock2.h ; then
4955         check_func_headers winsock2.h closesocket -lws2 &&
4956             network_extralibs="-lws2" ||
4957         { check_func_headers winsock2.h closesocket -lws2_32 &&
4958             network_extralibs="-lws2_32"; } || disable winsock2_h network
4959         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4960
4961         check_type ws2tcpip.h socklen_t
4962         check_type ws2tcpip.h "struct addrinfo"
4963         check_type ws2tcpip.h "struct group_source_req"
4964         check_type ws2tcpip.h "struct ip_mreq_source"
4965         check_type ws2tcpip.h "struct ipv6_mreq"
4966         check_type winsock2.h "struct pollfd"
4967         check_struct winsock2.h "struct sockaddr" sa_len
4968         check_type ws2tcpip.h "struct sockaddr_in6"
4969         check_type ws2tcpip.h "struct sockaddr_storage"
4970     else
4971         disable network
4972     fi
4973 fi
4974
4975 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4976 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4977 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4978 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4979 check_builtin sarestart signal.h "SA_RESTART"
4980 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4981 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
4982 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
4983
4984 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4985 check_func  ${malloc_prefix}memalign            && enable memalign
4986 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4987
4988 check_func  access
4989 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4990 check_func  fcntl
4991 check_func  fork
4992 check_func  gethrtime
4993 check_func  getopt
4994 check_func  getrusage
4995 check_func  gettimeofday
4996 check_func  isatty
4997 check_func  mach_absolute_time
4998 check_func  mkstemp
4999 check_func  mmap
5000 check_func  mprotect
5001 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5002 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5003 check_func  sched_getaffinity
5004 check_func  setrlimit
5005 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5006 check_func  strerror_r
5007 check_func  sysconf
5008 check_func  sysctl
5009 check_func  usleep
5010
5011 check_func_headers conio.h kbhit
5012 check_func_headers io.h setmode
5013 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5014 check_func_headers stdlib.h getenv
5015
5016 check_func_headers windows.h CoTaskMemFree -lole32
5017 check_func_headers windows.h GetProcessAffinityMask
5018 check_func_headers windows.h GetProcessTimes
5019 check_func_headers windows.h GetSystemTimeAsFileTime
5020 check_func_headers windows.h MapViewOfFile
5021 check_func_headers windows.h PeekNamedPipe
5022 check_func_headers windows.h SetConsoleTextAttribute
5023 check_func_headers windows.h SetConsoleCtrlHandler
5024 check_func_headers windows.h Sleep
5025 check_func_headers windows.h VirtualAlloc
5026 check_struct windows.h "CONDITION_VARIABLE" Ptr
5027 check_func_headers glob.h glob
5028 enabled xlib &&
5029     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5030
5031 check_header direct.h
5032 check_header dlfcn.h
5033 check_header d3d11.h
5034 check_header dxva.h
5035 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5036 check_header io.h
5037 check_header libcrystalhd/libcrystalhd_if.h
5038 check_header mach/mach_time.h
5039 check_header malloc.h
5040 check_header net/udplite.h
5041 check_header poll.h
5042 check_header sys/mman.h
5043 check_header sys/param.h
5044 check_header sys/resource.h
5045 check_header sys/select.h
5046 check_header sys/time.h
5047 check_header sys/un.h
5048 check_header termios.h
5049 check_header unistd.h
5050 check_header valgrind/valgrind.h
5051 check_header vdpau/vdpau.h
5052 check_header vdpau/vdpau_x11.h
5053 check_header VideoDecodeAcceleration/VDADecoder.h
5054 check_header windows.h
5055 check_header X11/extensions/XvMClib.h
5056 check_header asm/types.h
5057
5058 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5059 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5060 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5061
5062 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5063
5064 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
5065 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5066 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
5067
5068 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5069
5070 if ! disabled w32threads && ! enabled pthreads; then
5071     check_func_headers "windows.h process.h" _beginthreadex &&
5072         enable w32threads || disable w32threads
5073 fi
5074
5075 # check for some common methods of building with pthread support
5076 # do this before the optional library checks as some of them require pthreads
5077 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5078     enable pthreads
5079     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5080         add_cflags -pthread
5081         add_extralibs -pthread
5082     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5083         add_cflags -pthreads
5084         add_extralibs -pthreads
5085     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5086         add_cflags -ldl -pthread
5087         add_extralibs -ldl -pthread
5088     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5089         add_extralibs -lpthreadGC2
5090     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5091         :
5092     elif ! check_func pthread_join && ! check_func pthread_create; then
5093         disable pthreads
5094     fi
5095     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5096 fi
5097
5098
5099 if enabled pthreads; then
5100   check_func pthread_cancel
5101 fi
5102
5103 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5104 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5105 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5106
5107 check_lib math.h sin -lm && LIBM="-lm"
5108 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5109
5110 atan2f_args=2
5111 ldexpf_args=2
5112 powf_args=2
5113
5114 for func in $MATH_FUNCS; do
5115     eval check_mathfunc $func \${${func}_args:-1}
5116 done
5117
5118 # these are off by default, so fail if requested and not available
5119 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5120 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5121                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5122 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5123                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5124                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5125 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5126 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5127 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5128 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5129 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5130 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5131 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5132 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5133 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5134 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5135                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5136                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5137 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5138 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create &&
5139                              check_struct libdcadec/dca_context.h "struct dcadec_exss_info" matrix_encoding
5140 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5141 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5142                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5143                                  warn "using libfdk without pkg-config"; } }
5144 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"
5145 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5146 enabled fontconfig        && enable libfontconfig
5147 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5148 enabled libfreetype       && require_libfreetype
5149 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5150 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5151 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5152                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5153                                done || die "ERROR: libgsm not found"; }
5154 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5155 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5156 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5157 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5158 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5159 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5160 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5161 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5162 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5163 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5164                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5165                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5166                                die "ERROR: libopenjpeg not found"; }
5167 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5168 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5169 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5170 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5171 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5172 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5173 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5174                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5175 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5176 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5177 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5178 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5179 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5180     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5181     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5182 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5183 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5184                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5185                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5186 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5187 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5188 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5189 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5190 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5191 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5192
5193 enabled libvpx            && {
5194     enabled libvpx_vp8_decoder && {
5195         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5196             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5197                 die "ERROR: libvpx decoder version must be >=0.9.1";
5198     }
5199     enabled libvpx_vp8_encoder && {
5200         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5201             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5202                 die "ERROR: libvpx encoder version must be >=0.9.7";
5203     }
5204     enabled libvpx_vp9_decoder && {
5205         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5206             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5207                 disable libvpx_vp9_decoder;
5208     }
5209     enabled libvpx_vp9_encoder && {
5210         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5211             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5212                 disable libvpx_vp9_encoder;
5213     }
5214     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5215         die "libvpx enabled but no supported decoders found"
5216     fi
5217 }
5218
5219 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5220 enabled libwebp           && {
5221     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5222     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5223 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5224                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5225                                  warn "using libx264 without pkg-config"; } } &&
5226                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5227                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5228 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5229                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5230                                die "ERROR: libx265 version must be >= 57."; }
5231 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5232 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5233 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5234 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5235 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5236                                 { ! enabled cross_compile && {
5237                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5238                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5239                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5240                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5241                                die "ERROR: mmal not found"; }
5242 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5243                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5244                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5245                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5246 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5247                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5248                                die "ERROR: openal not found"; } &&
5249                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5250                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5251 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5252                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5253                                die "ERROR: opencl not found"; } &&
5254                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5255                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5256                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5257 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5258                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5259                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5260                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5261                                die "ERROR: opengl not found."
5262                              }
5263 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5264                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5265                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5266                                die "ERROR: openssl not found"; }
5267 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5268
5269 if enabled gnutls; then
5270     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
5271     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5272 fi
5273
5274 # libdc1394 check
5275 if enabled libdc1394; then
5276     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5277         enable libdc1394_2; } ||
5278     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5279         enable libdc1394_1; } ||
5280     die "ERROR: No version of libdc1394 found "
5281 fi
5282 if ! disabled sdl; then
5283     SDL_CONFIG="${cross_prefix}sdl-config"
5284     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5285         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5286         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5287         enable sdl
5288     else
5289         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5290             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5291             sdl_libs=$("${SDL_CONFIG}" --libs)
5292             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5293             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5294             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5295             enable sdl
5296         elif enabled sdl ; then
5297             die "ERROR: SDL not found"
5298         else
5299             disable sdl
5300         fi
5301     fi
5302 fi
5303 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5304
5305 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5306     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5307     enable securetransport; }
5308
5309 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5310 enabled makeinfo \
5311     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5312     && enable makeinfo_html || disable makeinfo_html
5313 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5314 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5315 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5316 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5317
5318 check_header linux/fb.h
5319 check_header linux/videodev.h
5320 check_header linux/videodev2.h
5321 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5322
5323 check_header sys/videoio.h
5324 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5325
5326 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5327 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5328 # w32api 3.12 had it defined wrong
5329 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5330
5331 check_type "dshow.h" IBaseFilter
5332
5333 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5334 { check_header dev/bktr/ioctl_meteor.h &&
5335   check_header dev/bktr/ioctl_bt848.h; } ||
5336 { check_header machine/ioctl_meteor.h &&
5337   check_header machine/ioctl_bt848.h; } ||
5338 { check_header dev/video/meteor/ioctl_meteor.h &&
5339   check_header dev/video/bktr/ioctl_bt848.h; } ||
5340 check_header dev/ic/bt8xx.h
5341
5342 check_header sndio.h
5343 if check_struct sys/soundcard.h audio_buf_info bytes; then
5344     enable_safe sys/soundcard.h
5345 else
5346     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5347     #include <sys/soundcard.h>
5348     audio_buf_info abc;
5349 EOF
5350 fi
5351 check_header soundcard.h
5352
5353 enabled_any alsa_indev alsa_outdev &&
5354     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5355
5356 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5357     check_func jack_port_get_latency_range -ljack
5358
5359 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5360
5361 if enabled libcdio; then
5362     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5363     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5364     die "ERROR: No usable libcdio/cdparanoia found"
5365 fi
5366
5367 enabled xlib &&
5368     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5369
5370 if ! disabled libxcb; then
5371     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5372         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5373     } && disable x11grab && enable libxcb
5374
5375 if enabled libxcb; then
5376     disabled libxcb_shm || {
5377         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5378             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5379         } && check_header sys/shm.h && enable libxcb_shm; }
5380
5381     disabled libxcb_xfixes || {
5382         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5383             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5384         } && enable libxcb_xfixes; }
5385
5386     disabled libxcb_shape || {
5387         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5388             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5389         } && enable libxcb_shape; }
5390
5391     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5392     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5393 fi
5394 fi
5395
5396 if enabled x11grab; then
5397     enabled xlib || die "ERROR: Xlib not found"
5398     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5399     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5400 fi
5401
5402 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5403
5404 enabled dxva2api_h &&
5405     check_cc <<EOF && enable dxva2api_cobj
5406 #define _WIN32_WINNT 0x0600
5407 #define COBJMACROS
5408 #include <windows.h>
5409 #include <d3d9.h>
5410 #include <dxva2api.h>
5411 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5412 EOF
5413
5414 enabled vaapi &&
5415     check_lib va/va.h vaInitialize -lva ||
5416     disable vaapi
5417
5418 enabled vaapi && enabled xlib &&
5419     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5420     enable vaapi_x11
5421
5422 enabled vdpau &&
5423     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5424     disable vdpau
5425
5426 enabled vdpau && enabled xlib &&
5427     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5428     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5429     enable vdpau_x11
5430
5431 # Funny iconv installations are not unusual, so check it after all flags have been set
5432 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5433
5434 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5435
5436 # add some useful compiler flags if supported
5437 check_cflags -Wdeclaration-after-statement
5438 check_cflags -Wall
5439 check_cflags -Wdisabled-optimization
5440 check_cflags -Wpointer-arith
5441 check_cflags -Wredundant-decls
5442 check_cflags -Wwrite-strings
5443 check_cflags -Wtype-limits
5444 check_cflags -Wundef
5445 check_cflags -Wmissing-prototypes
5446 check_cflags -Wno-pointer-to-int-cast
5447 check_cflags -Wstrict-prototypes
5448 check_cflags -Wempty-body
5449 enabled extra_warnings && check_cflags -Winline
5450
5451 check_disable_warning(){
5452     warning_flag=-W${1#-Wno-}
5453     test_cflags $warning_flag && add_cflags $1
5454 }
5455
5456 check_disable_warning -Wno-parentheses
5457 check_disable_warning -Wno-switch
5458 check_disable_warning -Wno-format-zero-length
5459 check_disable_warning -Wno-pointer-sign
5460
5461 # add some linker flags
5462 check_ldflags -Wl,--warn-common
5463 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5464 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5465 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5466 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5467
5468 # add some strip flags
5469 # -wN '..@*' is more selective than -x, but not available everywhere.
5470 check_stripflags -wN \'..@*\' || check_stripflags -x
5471
5472 enabled neon_clobber_test &&
5473     check_ldflags -Wl,--wrap,avcodec_open2              \
5474                   -Wl,--wrap,avcodec_decode_audio4      \
5475                   -Wl,--wrap,avcodec_decode_video2      \
5476                   -Wl,--wrap,avcodec_decode_subtitle2   \
5477                   -Wl,--wrap,avcodec_encode_audio2      \
5478                   -Wl,--wrap,avcodec_encode_video2      \
5479                   -Wl,--wrap,avcodec_encode_subtitle    \
5480                   -Wl,--wrap,swr_convert                \
5481                   -Wl,--wrap,avresample_convert ||
5482     disable neon_clobber_test
5483
5484 enabled xmm_clobber_test &&
5485     check_ldflags -Wl,--wrap,avcodec_open2              \
5486                   -Wl,--wrap,avcodec_decode_audio4      \
5487                   -Wl,--wrap,avcodec_decode_video2      \
5488                   -Wl,--wrap,avcodec_decode_subtitle2   \
5489                   -Wl,--wrap,avcodec_encode_audio2      \
5490                   -Wl,--wrap,avcodec_encode_video       \
5491                   -Wl,--wrap,avcodec_encode_video2      \
5492                   -Wl,--wrap,avcodec_encode_subtitle    \
5493                   -Wl,--wrap,swr_convert                \
5494                   -Wl,--wrap,avresample_convert         \
5495                   -Wl,--wrap,sws_scale ||
5496     disable xmm_clobber_test
5497
5498 echo "X{};" > $TMPV
5499 if test_ldflags -Wl,--version-script,$TMPV; then
5500     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5501     check_cc <<EOF && enable symver_asm_label
5502 void ff_foo(void) __asm__ ("av_foo@VERSION");
5503 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5504 EOF
5505     check_cc <<EOF && enable symver_gnu_asm
5506 __asm__(".symver ff_foo,av_foo@VERSION");
5507 void ff_foo(void) {}
5508 EOF
5509 fi
5510
5511 if [ -z "$optflags" ]; then
5512     if enabled small; then
5513         optflags=$cflags_size
5514     elif enabled optimizations; then
5515         optflags=$cflags_speed
5516     else
5517         optflags=$cflags_noopt
5518     fi
5519 fi
5520
5521 check_optflags(){
5522     check_cflags "$@"
5523     enabled lto && check_ldflags "$@"
5524 }
5525
5526
5527 if enabled lto; then
5528     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5529     check_cflags  -flto
5530     check_ldflags -flto $cpuflags
5531     disable inline_asm_direct_symbol_refs
5532 fi
5533
5534 check_optflags $optflags
5535 check_optflags -fno-math-errno
5536 check_optflags -fno-signed-zeros
5537
5538 enabled ftrapv && check_cflags -ftrapv
5539
5540 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5541 int x;
5542 EOF
5543
5544
5545 if enabled icc; then
5546     # Just warnings, no remarks
5547     check_cflags -w1
5548     # -wd: Disable following warnings
5549     # 144, 167, 556: -Wno-pointer-sign
5550     # 188: enumerated type mixed with another type
5551     # 1292: attribute "foo" ignored
5552     # 1419: external declaration in primary source file
5553     # 10006: ignoring unknown option -fno-signed-zeros
5554     # 10148: ignoring unknown option -Wno-parentheses
5555     # 10156: ignoring option '-W'; no argument required
5556     # 13200: No EMMS instruction before call to function
5557     # 13203: No EMMS instruction before return from function
5558     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5559     # 11030: Warning unknown option --as-needed
5560     # 10156: ignoring option '-export'; no argument required
5561     check_ldflags -wd10156,11030
5562     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5563     enable ebp_available
5564     # The test above does not test linking
5565     enabled lto && disable symver_asm_label
5566     if enabled x86_32; then
5567         icc_version=$($cc -dumpversion)
5568         test ${icc_version%%.*} -ge 11 &&
5569             check_cflags -falign-stack=maintain-16-byte ||
5570             disable aligned_stack
5571     fi
5572 elif enabled ccc; then
5573     # disable some annoying warnings
5574     add_cflags -msg_disable bitnotint
5575     add_cflags -msg_disable mixfuncvoid
5576     add_cflags -msg_disable nonstandcast
5577     add_cflags -msg_disable unsupieee
5578 elif enabled gcc; then
5579     check_optflags -fno-tree-vectorize
5580     check_cflags -Werror=format-security
5581     check_cflags -Werror=implicit-function-declaration
5582     check_cflags -Werror=missing-prototypes
5583     check_cflags -Werror=return-type
5584     check_cflags -Werror=vla
5585     check_cflags -Wformat
5586     check_cflags -fdiagnostics-color=auto
5587     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5588 elif enabled llvm_gcc; then
5589     check_cflags -mllvm -stack-alignment=16
5590 elif enabled clang; then
5591     check_cflags -mllvm -stack-alignment=16
5592     check_cflags -Qunused-arguments
5593     check_cflags -Werror=implicit-function-declaration
5594     check_cflags -Werror=missing-prototypes
5595     check_cflags -Werror=return-type
5596 elif enabled cparser; then
5597     add_cflags -Wno-missing-variable-declarations
5598     add_cflags -Wno-empty-statement
5599 elif enabled armcc; then
5600     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5601     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5602     # 2523: use of inline assembly is deprecated
5603     add_cflags -W${armcc_opt},--diag_suppress=2523
5604     add_cflags -W${armcc_opt},--diag_suppress=1207
5605     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5606     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5607     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5608     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5609 elif enabled tms470; then
5610     add_cflags -pds=824 -pds=837
5611     disable inline_asm
5612 elif enabled pathscale; then
5613     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5614 elif enabled_any msvc icl; then
5615     enabled x86_32 && disable aligned_stack
5616     enabled_all x86_32 debug && add_cflags -Oy-
5617     enabled debug && add_ldflags -debug
5618     enable pragma_deprecated
5619     if enabled icl; then
5620         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5621         # (correctly) on icl 13.x.
5622         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5623             add_cflags -Qansi-alias
5624         # Some inline asm is not compilable in debug
5625         if enabled debug; then
5626             disable ebp_available
5627             disable ebx_available
5628         fi
5629     fi
5630     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5631     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5632 fi
5633
5634 case $as_type in
5635     clang)
5636         add_asflags -Qunused-arguments
5637     ;;
5638 esac
5639
5640 case $ld_type in
5641     clang)
5642         check_ldflags -Qunused-arguments
5643     ;;
5644 esac
5645
5646 case $target_os in
5647     osf1)
5648         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5649     ;;
5650     plan9)
5651         add_cppflags -Dmain=plan9_main
5652     ;;
5653 esac
5654
5655 enable frame_thread_encoder
5656
5657 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5658
5659 check_deps $CONFIG_LIST       \
5660            $CONFIG_EXTRA      \
5661            $HAVE_LIST         \
5662            $ALL_COMPONENTS    \
5663
5664 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"
5665
5666
5667 if test $target_os = "haiku"; then
5668     disable memalign
5669     disable posix_memalign
5670 fi
5671
5672 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5673     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5674     enable dxva2_lib
5675
5676 ! enabled_any memalign posix_memalign aligned_malloc &&
5677     enabled simd_align_16 && enable memalign_hack
5678
5679 # add_dep lib dep
5680 # -> enable ${lib}_deps_${dep}
5681 # -> add $dep to ${lib}_deps only once
5682 add_dep() {
5683     lib=$1
5684     dep=$2
5685     enabled "${lib}_deps_${dep}" && return 0
5686     enable  "${lib}_deps_${dep}"
5687     prepend "${lib}_deps" $dep
5688 }
5689
5690 # merge deps lib components
5691 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5692 merge_deps() {
5693     lib=$1
5694     shift
5695     for comp in $*; do
5696         enabled $comp || continue
5697         eval "dep=\"\$${comp}_deps\""
5698         for d in $dep; do
5699             add_dep $lib $d
5700         done
5701     done
5702 }
5703
5704 merge_deps libavfilter $FILTER_LIST
5705
5706 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5707
5708 for thread in $THREADS_LIST; do
5709     if enabled $thread; then
5710         test -n "$thread_type" &&
5711             die "ERROR: Only one thread type must be selected." ||
5712             thread_type="$thread"
5713     fi
5714 done
5715
5716 enabled zlib && add_cppflags -DZLIB_CONST
5717
5718 # conditional library dependencies, in linking order
5719 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5720 enabled aresample_filter    && prepend avfilter_deps "swresample"
5721 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5722 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5723 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5724 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5725 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5726 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5727 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5728 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5729 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5730 enabled pan_filter          && prepend avfilter_deps "swresample"
5731 enabled pp_filter           && prepend avfilter_deps "postproc"
5732 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5733 enabled resample_filter && prepend avfilter_deps "avresample"
5734 enabled sab_filter          && prepend avfilter_deps "swscale"
5735 enabled scale_filter    && prepend avfilter_deps "swscale"
5736 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5737 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5738 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5739 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5740
5741 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5742
5743 enabled opus_decoder    && prepend avcodec_deps "swresample"
5744
5745 expand_deps(){
5746     lib_deps=${1}_deps
5747     eval "deps=\$$lib_deps"
5748     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5749     unique $lib_deps
5750 }
5751
5752 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5753 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5754
5755 map 'expand_deps $v' $LIBRARY_LIST
5756
5757 echo "install prefix            $prefix"
5758 echo "source path               $source_path"
5759 echo "C compiler                $cc"
5760 echo "C library                 $libc_type"
5761 if test "$host_cc" != "$cc"; then
5762     echo "host C compiler           $host_cc"
5763     echo "host C library            $host_libc_type"
5764 fi
5765 echo "ARCH                      $arch ($cpu)"
5766 if test "$build_suffix" != ""; then
5767     echo "build suffix              $build_suffix"
5768 fi
5769 if test "$progs_suffix" != ""; then
5770     echo "progs suffix              $progs_suffix"
5771 fi
5772 if test "$extra_version" != ""; then
5773     echo "version string suffix     $extra_version"
5774 fi
5775 echo "big-endian                ${bigendian-no}"
5776 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5777 if enabled x86; then
5778     echo "${yasmexe}                      ${yasm-no}"
5779     echo "MMX enabled               ${mmx-no}"
5780     echo "MMXEXT enabled            ${mmxext-no}"
5781     echo "3DNow! enabled            ${amd3dnow-no}"
5782     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5783     echo "SSE enabled               ${sse-no}"
5784     echo "SSSE3 enabled             ${ssse3-no}"
5785     echo "AVX enabled               ${avx-no}"
5786     echo "XOP enabled               ${xop-no}"
5787     echo "FMA3 enabled              ${fma3-no}"
5788     echo "FMA4 enabled              ${fma4-no}"
5789     echo "i686 features enabled     ${i686-no}"
5790     echo "CMOV is fast              ${fast_cmov-no}"
5791     echo "EBX available             ${ebx_available-no}"
5792     echo "EBP available             ${ebp_available-no}"
5793 fi
5794 if enabled aarch64; then
5795     echo "NEON enabled              ${neon-no}"
5796     echo "VFP enabled               ${vfp-no}"
5797 fi
5798 if enabled arm; then
5799     echo "ARMv5TE enabled           ${armv5te-no}"
5800     echo "ARMv6 enabled             ${armv6-no}"
5801     echo "ARMv6T2 enabled           ${armv6t2-no}"
5802     echo "VFP enabled               ${vfp-no}"
5803     echo "NEON enabled              ${neon-no}"
5804     echo "THUMB enabled             ${thumb-no}"
5805 fi
5806 if enabled mips; then
5807     echo "MIPS FPU enabled          ${mipsfpu-no}"
5808     echo "MIPS32R5 enabled          ${mips32r5-no}"
5809     echo "MIPS64R6 enabled          ${mips64r6-no}"
5810     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5811     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5812     echo "MIPS MSA enabled          ${msa-no}"
5813     echo "LOONGSON MMI enabled      ${mmi-no}"
5814 fi
5815 if enabled ppc; then
5816     echo "AltiVec enabled           ${altivec-no}"
5817     echo "VSX enabled               ${vsx-no}"
5818     echo "POWER8 enabled            ${power8-no}"
5819     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5820     echo "dcbzl available           ${dcbzl-no}"
5821 fi
5822 echo "debug symbols             ${debug-no}"
5823 echo "strip symbols             ${stripping-no}"
5824 echo "optimize for size         ${small-no}"
5825 echo "optimizations             ${optimizations-no}"
5826 echo "static                    ${static-no}"
5827 echo "shared                    ${shared-no}"
5828 echo "postprocessing support    ${postproc-no}"
5829 echo "new filter support        ${avfilter-no}"
5830 echo "network support           ${network-no}"
5831 echo "threading support         ${thread_type-no}"
5832 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5833 echo "SDL support               ${sdl-no}"
5834 echo "opencl enabled            ${opencl-no}"
5835 echo "texi2html enabled         ${texi2html-no}"
5836 echo "perl enabled              ${perl-no}"
5837 echo "pod2man enabled           ${pod2man-no}"
5838 echo "makeinfo enabled          ${makeinfo-no}"
5839 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5840 test -n "$random_seed" &&
5841     echo "random seed               ${random_seed}"
5842 echo
5843
5844 echo "External libraries:"
5845 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5846 echo
5847
5848 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5849     echo "Enabled ${type}s:"
5850     eval list=\$$(toupper $type)_LIST
5851     print_enabled '_*' $list | print_3_columns
5852     echo
5853 done
5854
5855 license="LGPL version 2.1 or later"
5856 if enabled nonfree; then
5857     license="nonfree and unredistributable"
5858 elif enabled gplv3; then
5859     license="GPL version 3 or later"
5860 elif enabled lgplv3; then
5861     license="LGPL version 3 or later"
5862 elif enabled gpl; then
5863     license="GPL version 2 or later"
5864 fi
5865
5866 echo "License: $license"
5867
5868 echo "Creating config.mak, config.h, and doc/config.texi..."
5869
5870 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5871
5872 enabled stripping || strip="echo skipping strip"
5873
5874 config_files="$TMPH config.mak doc/config.texi"
5875
5876 cat > config.mak <<EOF
5877 # Automatically generated by configure - do not modify!
5878 ifndef FFMPEG_CONFIG_MAK
5879 FFMPEG_CONFIG_MAK=1
5880 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5881 prefix=$prefix
5882 LIBDIR=\$(DESTDIR)$libdir
5883 SHLIBDIR=\$(DESTDIR)$shlibdir
5884 INCDIR=\$(DESTDIR)$incdir
5885 BINDIR=\$(DESTDIR)$bindir
5886 DATADIR=\$(DESTDIR)$datadir
5887 DOCDIR=\$(DESTDIR)$docdir
5888 MANDIR=\$(DESTDIR)$mandir
5889 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
5890 SRC_PATH=$source_path
5891 ifndef MAIN_MAKEFILE
5892 SRC_PATH:=\$(SRC_PATH:.%=..%)
5893 endif
5894 CC_IDENT=$cc_ident
5895 ARCH=$arch
5896 INTRINSICS=$intrinsics
5897 CC=$cc
5898 CXX=$cxx
5899 AS=$as
5900 LD=$ld
5901 DEPCC=$dep_cc
5902 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5903 DEPAS=$as
5904 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5905 YASM=$yasmexe
5906 DEPYASM=$yasmexe
5907 AR=$ar
5908 ARFLAGS=$arflags
5909 AR_O=$ar_o
5910 RANLIB=$ranlib
5911 STRIP=$strip
5912 CP=cp -p
5913 LN_S=$ln_s
5914 CPPFLAGS=$CPPFLAGS
5915 CFLAGS=$CFLAGS
5916 CXXFLAGS=$CXXFLAGS
5917 ASFLAGS=$ASFLAGS
5918 AS_C=$AS_C
5919 AS_O=$AS_O
5920 CC_C=$CC_C
5921 CC_E=$CC_E
5922 CC_O=$CC_O
5923 CXX_C=$CXX_C
5924 CXX_O=$CXX_O
5925 LD_O=$LD_O
5926 LD_LIB=$LD_LIB
5927 LD_PATH=$LD_PATH
5928 DLLTOOL=$dlltool
5929 WINDRES=$windres
5930 DEPWINDRES=$dep_cc
5931 DOXYGEN=$doxygen
5932 LDFLAGS=$LDFLAGS
5933 LDEXEFLAGS=$LDEXEFLAGS
5934 LDLIBFLAGS=$LDLIBFLAGS
5935 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5936 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5937 YASMFLAGS=$YASMFLAGS
5938 BUILDSUF=$build_suffix
5939 PROGSSUF=$progs_suffix
5940 FULLNAME=$FULLNAME
5941 LIBPREF=$LIBPREF
5942 LIBSUF=$LIBSUF
5943 LIBNAME=$LIBNAME
5944 SLIBPREF=$SLIBPREF
5945 SLIBSUF=$SLIBSUF
5946 EXESUF=$EXESUF
5947 EXTRA_VERSION=$extra_version
5948 CCDEP=$CCDEP
5949 CXXDEP=$CXXDEP
5950 CCDEP_FLAGS=$CCDEP_FLAGS
5951 ASDEP=$ASDEP
5952 ASDEP_FLAGS=$ASDEP_FLAGS
5953 CC_DEPFLAGS=$CC_DEPFLAGS
5954 AS_DEPFLAGS=$AS_DEPFLAGS
5955 HOSTCC=$host_cc
5956 HOSTLD=$host_ld
5957 HOSTCFLAGS=$host_cflags
5958 HOSTCPPFLAGS=$host_cppflags
5959 HOSTEXESUF=$HOSTEXESUF
5960 HOSTLDFLAGS=$host_ldflags
5961 HOSTLIBS=$host_libs
5962 DEPHOSTCC=$host_cc
5963 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5964 HOSTCCDEP=$HOSTCCDEP
5965 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5966 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5967 HOSTCC_C=$HOSTCC_C
5968 HOSTCC_O=$HOSTCC_O
5969 HOSTLD_O=$HOSTLD_O
5970 TARGET_EXEC=$target_exec $target_exec_args
5971 TARGET_PATH=$target_path
5972 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5973 CFLAGS-ffplay=$sdl_cflags
5974 ZLIB=$($ldflags_filter -lz)
5975 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5976 EXTRALIBS=$extralibs
5977 COMPAT_OBJS=$compat_objs
5978 EXEOBJS=$exeobjs
5979 INSTALL=$install
5980 LIBTARGET=${LIBTARGET}
5981 SLIBNAME=${SLIBNAME}
5982 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5983 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5984 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5985 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5986 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5987 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5988 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5989 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5990 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5991 NOREDZONE_FLAGS=$noredzone_flags
5992 EOF
5993
5994 get_version(){
5995     lcname=lib${1}
5996     name=$(toupper $lcname)
5997     file=$source_path/$lcname/version.h
5998     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5999     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6000     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6001     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6002     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6003     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6004 }
6005
6006 map 'get_version $v' $LIBRARY_LIST
6007
6008 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6009
6010 print_program_libs(){
6011     eval "program_libs=\$${1}_libs"
6012     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6013 }
6014
6015 map 'print_program_libs $v' $PROGRAM_LIST
6016
6017 cat > $TMPH <<EOF
6018 /* Automatically generated by configure - do not modify! */
6019 #ifndef FFMPEG_CONFIG_H
6020 #define FFMPEG_CONFIG_H
6021 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6022 #define FFMPEG_LICENSE "$(c_escape $license)"
6023 #define CONFIG_THIS_YEAR 2015
6024 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6025 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6026 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6027 #define av_restrict $_restrict
6028 #define EXTERN_PREFIX "${extern_prefix}"
6029 #define EXTERN_ASM ${extern_prefix}
6030 #define BUILDSUF "$build_suffix"
6031 #define SLIBSUF "$SLIBSUF"
6032 #define HAVE_MMX2 HAVE_MMXEXT
6033 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6034 EOF
6035
6036 test -n "$assert_level" &&
6037     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6038
6039 test -n "$malloc_prefix" &&
6040     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6041
6042 if enabled yasm; then
6043     append config_files $TMPASM
6044     printf '' >$TMPASM
6045 fi
6046
6047 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6048
6049
6050 mkdir -p doc
6051 mkdir -p tests
6052 mkdir -p tests/api
6053 echo "@c auto-generated by configure" > doc/config.texi
6054
6055 print_config ARCH_   "$config_files" $ARCH_LIST
6056 print_config HAVE_   "$config_files" $HAVE_LIST
6057 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6058                                      $CONFIG_EXTRA      \
6059                                      $ALL_COMPONENTS    \
6060
6061 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6062 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6063
6064 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6065 cp_if_changed $TMPH config.h
6066 touch .config
6067
6068 enabled yasm && cp_if_changed $TMPASM config.asm
6069
6070 cat > $TMPH <<EOF
6071 /* Generated by ffconf */
6072 #ifndef AVUTIL_AVCONFIG_H
6073 #define AVUTIL_AVCONFIG_H
6074 EOF
6075
6076 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6077
6078 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6079
6080 cp_if_changed $TMPH libavutil/avconfig.h
6081
6082 if test -n "$WARNINGS"; then
6083     printf "\n$WARNINGS"
6084     enabled fatal_warnings && exit 1
6085 fi
6086
6087 # build pkg-config files
6088
6089 lib_version(){
6090     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6091 }
6092
6093 pkgconfig_generate(){
6094     name=$1
6095     shortname=${name#lib}${build_suffix}
6096     comment=$2
6097     version=$3
6098     libs=$4
6099     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6100     requires=${requires%, }
6101     enabled ${name#lib} || return 0
6102     mkdir -p $name
6103     cat <<EOF > $name/$name${build_suffix}.pc
6104 prefix=$prefix
6105 exec_prefix=\${prefix}
6106 libdir=$libdir
6107 includedir=$incdir
6108
6109 Name: $name
6110 Description: $comment
6111 Version: $version
6112 Requires: $(enabled shared || echo $requires)
6113 Requires.private: $(enabled shared && echo $requires)
6114 Conflicts:
6115 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6116 Libs.private: $(enabled shared && echo $libs)
6117 Cflags: -I\${includedir}
6118 EOF
6119
6120 mkdir -p doc/examples/pc-uninstalled
6121 includedir=${source_path}
6122 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6123     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6124 prefix=
6125 exec_prefix=
6126 libdir=\${pcfiledir}/../../../$name
6127 includedir=${includedir}
6128
6129 Name: $name
6130 Description: $comment
6131 Version: $version
6132 Requires: $requires
6133 Conflicts:
6134 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6135 Cflags: -I\${includedir}
6136 EOF
6137 }
6138
6139 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6140 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6141 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6142 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6143 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6144 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6145 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6146 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6147 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"