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   --enable-videotoolbox    enable VideoToolbox code [autodetect]
 159
 160 Individual component options:
 161   --disable-everything     disable all components listed below
 162   --disable-encoder=NAME   disable encoder NAME
 163   --enable-encoder=NAME    enable encoder NAME
 164   --disable-encoders       disable all encoders
 165   --disable-decoder=NAME   disable decoder NAME
 166   --enable-decoder=NAME    enable decoder NAME
 167   --disable-decoders       disable all decoders
 168   --disable-hwaccel=NAME   disable hwaccel NAME
 169   --enable-hwaccel=NAME    enable hwaccel NAME
 170   --disable-hwaccels       disable all hwaccels
 171   --disable-muxer=NAME     disable muxer NAME
 172   --enable-muxer=NAME      enable muxer NAME
 173   --disable-muxers         disable all muxers
 174   --disable-demuxer=NAME   disable demuxer NAME
 175   --enable-demuxer=NAME    enable demuxer NAME
 176   --disable-demuxers       disable all demuxers
 177   --enable-parser=NAME     enable parser NAME
 178   --disable-parser=NAME    disable parser NAME
 179   --disable-parsers        disable all parsers
 180   --enable-bsf=NAME        enable bitstream filter NAME
 181   --disable-bsf=NAME       disable bitstream filter NAME
 182   --disable-bsfs           disable all bitstream filters
 183   --enable-protocol=NAME   enable protocol NAME
 184   --disable-protocol=NAME  disable protocol NAME
 185   --disable-protocols      disable all protocols
 186   --enable-indev=NAME      enable input device NAME
 187   --disable-indev=NAME     disable input device NAME
 188   --disable-indevs         disable input devices
 189   --enable-outdev=NAME     enable output device NAME
 190   --disable-outdev=NAME    disable output device NAME
 191   --disable-outdevs        disable output devices
 192   --disable-devices        disable all devices
 193   --enable-filter=NAME     enable filter NAME
 194   --disable-filter=NAME    disable filter NAME
 195   --disable-filters        disable all filters
 196
 197 External library support:
 198   --enable-avisynth        enable reading of AviSynth script files [no]
 199   --disable-bzlib          disable bzlib [autodetect]
 200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 201   --enable-frei0r          enable frei0r video filtering [no]
 202   --enable-gnutls          enable gnutls, needed for https support
 203                            if openssl is not used [no]
 204   --disable-iconv          disable iconv [autodetect]
 205   --enable-ladspa          enable LADSPA audio filtering [no]
 206   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 207   --enable-libass          enable libass subtitles rendering,
 208                            needed for subtitles and ass filter [no]
 209   --enable-libbluray       enable BluRay reading using libbluray [no]
 210   --enable-libbs2b         enable bs2b DSP library [no]
 211   --enable-libcaca         enable textual display using libcaca [no]
 212   --enable-libcelt         enable CELT decoding via libcelt [no]
 213   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 214   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 215                            and libraw1394 [no]
 216   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 217   --enable-libfaac         enable AAC encoding via libfaac [no]
 218   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 219   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 220   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 221   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 222   --enable-libgme          enable Game Music Emu via libgme [no]
 223   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 224   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 225   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 226   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 227   --enable-libmfx          enable HW acceleration through libmfx
 228   --enable-libmodplug      enable ModPlug via libmodplug [no]
 229   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 230   --enable-libnut          enable NUT (de)muxing via libnut,
 231                            native (de)muxer exists [no]
 232   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 233   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 234   --enable-libopencv       enable video filtering via libopencv [no]
 235   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 236   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 237   --enable-libopus         enable Opus de/encoding via libopus [no]
 238   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 239   --enable-libquvi         enable quvi input via libquvi [no]
 240   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 241   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 242   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 243   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 244   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 245   --enable-libsoxr         enable Include libsoxr resampling [no]
 246   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 247   --enable-libssh          enable SFTP protocol via libssh [no]
 248   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 249   --enable-libtheora       enable Theora encoding via libtheora [no]
 250   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 251   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 252   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 253   --enable-libvidstab      enable video stabilization using vid.stab [no]
 254   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 255   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 256   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 257                            native implementation exists [no]
 258   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 259   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 260   --enable-libwebp         enable WebP encoding via libwebp [no]
 261   --enable-libx264         enable H.264 encoding via x264 [no]
 262   --enable-libx265         enable HEVC encoding via x265 [no]
 263   --enable-libxavs         enable AVS encoding via xavs [no]
 264   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 265   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 266   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 267   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 268   --enable-libxvid         enable Xvid encoding via xvidcore,
 269                            native MPEG-4/Xvid encoder exists [no]
 270   --enable-libzmq          enable message passing via libzmq [no]
 271   --enable-libzvbi         enable teletext support via libzvbi [no]
 272   --disable-lzma           disable lzma [autodetect]
 273   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 274   --enable-mmal            enable decoding via MMAL [no]
 275   --enable-nvenc           enable NVIDIA NVENC support [no]
 276   --enable-openal          enable OpenAL 1.1 capture support [no]
 277   --enable-opencl          enable OpenCL code
 278   --enable-opengl          enable OpenGL rendering [no]
 279   --enable-openssl         enable openssl, needed for https support
 280                            if gnutls is not used [no]
 281   --disable-sdl            disable sdl [autodetect]
 282   --disable-securetransport disable Secure Transport, needed for TLS support
 283                            on OSX if openssl and gnutls are not used [autodetect]
 284   --enable-x11grab         enable X11 grabbing (legacy) [no]
 285   --disable-xlib           disable xlib [autodetect]
 286   --disable-zlib           disable zlib [autodetect]
 287
 288 Toolchain options:
 289   --arch=ARCH              select architecture [$arch]
 290   --cpu=CPU                select the minimum required CPU (affects
 291                            instruction selection, may crash on older CPUs)
 292   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 293   --progs-suffix=SUFFIX    program name suffix []
 294   --enable-cross-compile   assume a cross-compiler is used
 295   --sysroot=PATH           root of cross-build tree
 296   --sysinclude=PATH        location of cross-build system headers
 297   --target-os=OS           compiler targets OS [$target_os]
 298   --target-exec=CMD        command to run executables on target
 299   --target-path=DIR        path to view of build directory on target
 300   --target-samples=DIR     path to samples directory on target
 301   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 302   --toolchain=NAME         set tool defaults according to NAME
 303   --nm=NM                  use nm tool NM [$nm_default]
 304   --ar=AR                  use archive tool AR [$ar_default]
 305   --as=AS                  use assembler AS [$as_default]
 306   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 307   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 308   --cc=CC                  use C compiler CC [$cc_default]
 309   --cxx=CXX                use C compiler CXX [$cxx_default]
 310   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 311   --ld=LD                  use linker LD [$ld_default]
 312   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 313   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 314   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 315   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 316   --host-cc=HOSTCC         use host C compiler HOSTCC
 317   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 318   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 319   --host-ld=HOSTLD         use host linker HOSTLD
 320   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 321   --host-libs=HLIBS        use libs HLIBS when linking for host
 322   --host-os=OS             compiler host OS [$target_os]
 323   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 324   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 325   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 326   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 327   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 328   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 329   --extra-version=STRING   version string suffix []
 330   --optflags=OPTFLAGS      override optimization-related compiler flags
 331   --build-suffix=SUFFIX    library name suffix []
 332   --enable-pic             build position-independent code
 333   --enable-thumb           compile for Thumb instruction set
 334   --enable-lto             use link-time optimization
 335   --env="ENV=override"     override the environment variables
 336
 337 Advanced options (experts only):
 338   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 339   --disable-symver         disable symbol versioning
 340   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 341   --disable-safe-bitstream-reader
 342                            disable buffer boundary checking in bitreaders
 343                            (faster, but may crash)
 344   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 345   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 346
 347 Optimization options (experts only):
 348   --disable-asm            disable all assembly optimizations
 349   --disable-altivec        disable AltiVec optimizations
 350   --disable-vsx            disable VSX optimizations
 351   --disable-power8         disable POWER8 optimizations
 352   --disable-amd3dnow       disable 3DNow! optimizations
 353   --disable-amd3dnowext    disable 3DNow! extended optimizations
 354   --disable-mmx            disable MMX optimizations
 355   --disable-mmxext         disable MMXEXT optimizations
 356   --disable-sse            disable SSE optimizations
 357   --disable-sse2           disable SSE2 optimizations
 358   --disable-sse3           disable SSE3 optimizations
 359   --disable-ssse3          disable SSSE3 optimizations
 360   --disable-sse4           disable SSE4 optimizations
 361   --disable-sse42          disable SSE4.2 optimizations
 362   --disable-avx            disable AVX optimizations
 363   --disable-xop            disable XOP optimizations
 364   --disable-fma3           disable FMA3 optimizations
 365   --disable-fma4           disable FMA4 optimizations
 366   --disable-avx2           disable AVX2 optimizations
 367   --disable-armv5te        disable armv5te optimizations
 368   --disable-armv6          disable armv6 optimizations
 369   --disable-armv6t2        disable armv6t2 optimizations
 370   --disable-vfp            disable VFP optimizations
 371   --disable-neon           disable NEON optimizations
 372   --disable-inline-asm     disable use of inline assembly
 373   --disable-yasm           disable use of nasm/yasm assembly
 374   --disable-mips32r5       disable MIPS32R5 optimizations
 375   --disable-mips64r6       disable MIPS64R6 optimizations
 376   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 377   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 378   --disable-msa            disable MSA optimizations
 379   --disable-mipsfpu        disable floating point MIPS optimizations
 380   --disable-mmi            disable Loongson SIMD optimizations
 381   --disable-fast-unaligned consider unaligned accesses slow
 382
 383 Developer options (useful when working on FFmpeg itself):
 384   --disable-debug          disable debugging symbols
 385   --enable-debug=LEVEL     set the debug level [$debuglevel]
 386   --disable-optimizations  disable compiler optimizations
 387   --enable-extra-warnings  enable more compiler warnings
 388   --disable-stripping      disable stripping of executables and shared libraries
 389   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 390                            2 causes a slowdown at runtime.
 391   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 392   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 393                            leaks and errors, using the specified valgrind binary.
 394                            Cannot be combined with --target-exec
 395   --enable-ftrapv          Trap arithmetic overflows
 396   --samples=PATH           location of test samples for FATE, if not set use
 397                            \$FATE_SAMPLES at make invocation time.
 398   --enable-neon-clobber-test check NEON registers for clobbering (should be
 399                            used only for debugging purposes)
 400   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 401                            should be used only for debugging purposes)
 402   --enable-random          randomly enable/disable components
 403   --disable-random
 404   --enable-random=LIST     randomly enable/disable specific components or
 405   --disable-random=LIST    component groups. LIST is a comma-separated list
 406                            of NAME[:PROB] entries where NAME is a component
 407                            (group) and PROB the probability associated with
 408                            NAME (default 0.5).
 409   --random-seed=VALUE      seed value for --enable/disable-random
 410   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 411                            (only applies to --disable-optimizations builds)
 412
 413 NOTE: Object files are built at the place where configure is launched.
 414 EOF
 415   exit 0
 416 }
 417
 418 quotes='""'
 419
 420 log(){
 421     echo "$@" >> $logfile
 422 }
 423
 424 log_file(){
 425     log BEGIN $1
 426     pr -n -t $1 >> $logfile
 427     log END $1
 428 }
 429
 430 echolog(){
 431     log "$@"
 432     echo "$@"
 433 }
 434
 435 warn(){
 436     log "WARNING: $*"
 437     WARNINGS="${WARNINGS}WARNING: $*\n"
 438 }
 439
 440 die(){
 441     echolog "$@"
 442     cat <<EOF
 443
 444 If you think configure made a mistake, make sure you are using the latest
 445 version from Git.  If the latest version fails, report the problem to the
 446 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 447 EOF
 448     if disabled logging; then
 449         cat <<EOF
 450 Rerun configure with logging enabled (do not use --disable-logging), and
 451 include the log this produces with your report.
 452 EOF
 453     else
 454         cat <<EOF
 455 Include the log file "$logfile" produced by configure as this will help
 456 solve the problem.
 457 EOF
 458     fi
 459     exit 1
 460 }
 461
 462 # Avoid locale weirdness, besides we really just want to translate ASCII.
 463 toupper(){
 464     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 465 }
 466
 467 tolower(){
 468     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 469 }
 470
 471 c_escape(){
 472     echo "$*" | sed 's/["\\]/\\\0/g'
 473 }
 474
 475 sh_quote(){
 476     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 477     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 478     echo "$v"
 479 }
 480
 481 cleanws(){
 482     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 483 }
 484
 485 filter(){
 486     pat=$1
 487     shift
 488     for v; do
 489         eval "case $v in $pat) echo $v ;; esac"
 490     done
 491 }
 492
 493 filter_out(){
 494     pat=$1
 495     shift
 496     for v; do
 497         eval "case $v in $pat) ;; *) echo $v ;; esac"
 498     done
 499 }
 500
 501 map(){
 502     m=$1
 503     shift
 504     for v; do eval $m; done
 505 }
 506
 507 add_suffix(){
 508     suffix=$1
 509     shift
 510     for v; do echo ${v}${suffix}; done
 511 }
 512
 513 set_all(){
 514     value=$1
 515     shift
 516     for var in $*; do
 517         eval $var=$value
 518     done
 519 }
 520
 521 set_weak(){
 522     value=$1
 523     shift
 524     for var; do
 525         eval : \${$var:=$value}
 526     done
 527 }
 528
 529 sanitize_var_name(){
 530     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 531 }
 532
 533 set_safe(){
 534     var=$1
 535     shift
 536     eval $(sanitize_var_name "$var")='$*'
 537 }
 538
 539 get_safe(){
 540     eval echo \$$(sanitize_var_name "$1")
 541 }
 542
 543 pushvar(){
 544     for pvar in $*; do
 545         eval level=\${${pvar}_level:=0}
 546         eval ${pvar}_${level}="\$$pvar"
 547         eval ${pvar}_level=$(($level+1))
 548     done
 549 }
 550
 551 popvar(){
 552     for pvar in $*; do
 553         eval level=\${${pvar}_level:-0}
 554         test $level = 0 && continue
 555         eval level=$(($level-1))
 556         eval $pvar="\${${pvar}_${level}}"
 557         eval ${pvar}_level=$level
 558         eval unset ${pvar}_${level}
 559     done
 560 }
 561
 562 enable(){
 563     set_all yes $*
 564 }
 565
 566 disable(){
 567     set_all no $*
 568 }
 569
 570 enable_weak(){
 571     set_weak yes $*
 572 }
 573
 574 disable_weak(){
 575     set_weak no $*
 576 }
 577
 578 enable_safe(){
 579     for var; do
 580         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 581     done
 582 }
 583
 584 disable_safe(){
 585     for var; do
 586         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 587     done
 588 }
 589
 590 do_enable_deep(){
 591     for var; do
 592         enabled $var && continue
 593         eval sel="\$${var}_select"
 594         eval sgs="\$${var}_suggest"
 595         pushvar var sgs
 596         enable_deep $sel
 597         popvar sgs
 598         enable_deep_weak $sgs
 599         popvar var
 600     done
 601 }
 602
 603 enable_deep(){
 604     do_enable_deep $*
 605     enable $*
 606 }
 607
 608 enable_deep_weak(){
 609     for var; do
 610         disabled $var && continue
 611         pushvar var
 612         do_enable_deep $var
 613         popvar var
 614         enable_weak $var
 615     done
 616 }
 617
 618 enabled(){
 619     test "${1#!}" = "$1" && op== || op=!=
 620     eval test "x\$${1#!}" $op "xyes"
 621 }
 622
 623 disabled(){
 624     test "${1#!}" = "$1" && op== || op=!=
 625     eval test "x\$${1#!}" $op "xno"
 626 }
 627
 628 enabled_all(){
 629     for opt; do
 630         enabled $opt || return 1
 631     done
 632 }
 633
 634 disabled_all(){
 635     for opt; do
 636         disabled $opt || return 1
 637     done
 638 }
 639
 640 enabled_any(){
 641     for opt; do
 642         enabled $opt && return 0
 643     done
 644 }
 645
 646 disabled_any(){
 647     for opt; do
 648         disabled $opt && return 0
 649     done
 650     return 1
 651 }
 652
 653 set_default(){
 654     for opt; do
 655         eval : \${$opt:=\$${opt}_default}
 656     done
 657 }
 658
 659 is_in(){
 660     value=$1
 661     shift
 662     for var in $*; do
 663         [ $var = $value ] && return 0
 664     done
 665     return 1
 666 }
 667
 668 do_check_deps(){
 669     for cfg; do
 670         cfg="${cfg#!}"
 671         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 672         disabled ${cfg}_checking && continue
 673         enable ${cfg}_checking
 674         append allopts $cfg
 675
 676         eval dep_all="\$${cfg}_deps"
 677         eval dep_any="\$${cfg}_deps_any"
 678         eval dep_sel="\$${cfg}_select"
 679         eval dep_sgs="\$${cfg}_suggest"
 680         eval dep_ifa="\$${cfg}_if"
 681         eval dep_ifn="\$${cfg}_if_any"
 682
 683         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 684         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 685         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 686
 687         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 688         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 689         enabled_all  $dep_all || disable $cfg
 690         enabled_any  $dep_any || disable $cfg
 691         disabled_any $dep_sel && disable $cfg
 692
 693         if enabled $cfg; then
 694             enable_deep $dep_sel
 695             enable_deep_weak $dep_sgs
 696         fi
 697
 698         disable ${cfg}_checking
 699     done
 700 }
 701
 702 check_deps(){
 703     unset allopts
 704
 705     do_check_deps "$@"
 706
 707     for cfg in $allopts; do
 708         enabled $cfg || continue
 709         eval dep_extralibs="\$${cfg}_extralibs"
 710         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 711     done
 712 }
 713
 714 print_config(){
 715     pfx=$1
 716     files=$2
 717     shift 2
 718     map 'eval echo "$v \${$v:-no}"' "$@" |
 719     awk "BEGIN { split(\"$files\", files) }
 720         {
 721             c = \"$pfx\" toupper(\$1);
 722             v = \$2;
 723             sub(/yes/, 1, v);
 724             sub(/no/,  0, v);
 725             for (f in files) {
 726                 file = files[f];
 727                 if (file ~ /\\.h\$/) {
 728                     printf(\"#define %s %d\\n\", c, v) >>file;
 729                 } else if (file ~ /\\.asm\$/) {
 730                     printf(\"%%define %s %d\\n\", c, v) >>file;
 731                 } else if (file ~ /\\.mak\$/) {
 732                     n = -v ? \"\" : \"!\";
 733                     printf(\"%s%s=yes\\n\", n, c) >>file;
 734                 } else if (file ~ /\\.texi\$/) {
 735                     pre = -v ? \"\" : \"@c \";
 736                     yesno = \$2;
 737                     c2 = tolower(c);
 738                     gsub(/_/, \"-\", c2);
 739                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 740                 }
 741             }
 742         }"
 743 }
 744
 745 print_enabled(){
 746     suf=$1
 747     shift
 748     for v; do
 749         enabled $v && printf "%s\n" ${v%$suf};
 750     done
 751 }
 752
 753 append(){
 754     var=$1
 755     shift
 756     eval "$var=\"\$$var $*\""
 757 }
 758
 759 prepend(){
 760     var=$1
 761     shift
 762     eval "$var=\"$* \$$var\""
 763 }
 764
 765 unique(){
 766     var=$1
 767     uniq_list=""
 768     for tok in $(eval echo \$$var); do
 769         uniq_list="$(filter_out $tok $uniq_list) $tok"
 770     done
 771     eval "$var=\"${uniq_list}\""
 772 }
 773
 774 add_cppflags(){
 775     append CPPFLAGS "$@"
 776 }
 777
 778 add_cflags(){
 779     append CFLAGS $($cflags_filter "$@")
 780 }
 781
 782 add_cxxflags(){
 783     append CXXFLAGS $($cflags_filter "$@")
 784 }
 785
 786 add_asflags(){
 787     append ASFLAGS $($asflags_filter "$@")
 788 }
 789
 790 add_ldflags(){
 791     append LDFLAGS $($ldflags_filter "$@")
 792 }
 793
 794 add_ldexeflags(){
 795     append LDEXEFLAGS $($ldflags_filter "$@")
 796 }
 797
 798 add_ldlibflags(){
 799     append LDLIBFLAGS $($ldflags_filter "$@")
 800 }
 801
 802 add_stripflags(){
 803     append ASMSTRIPFLAGS "$@"
 804 }
 805
 806 add_extralibs(){
 807     prepend extralibs $($ldflags_filter "$@")
 808 }
 809
 810 add_host_cppflags(){
 811     append host_cppflags "$@"
 812 }
 813
 814 add_host_cflags(){
 815     append host_cflags $($host_cflags_filter "$@")
 816 }
 817
 818 add_host_ldflags(){
 819     append host_ldflags $($host_ldflags_filter "$@")
 820 }
 821
 822 add_compat(){
 823     append compat_objs $1
 824     shift
 825     map 'add_cppflags -D$v' "$@"
 826 }
 827
 828 check_cmd(){
 829     log "$@"
 830     "$@" >> $logfile 2>&1
 831 }
 832
 833 check_stat(){
 834     log check_stat "$@"
 835     stat "$1" >> $logfile 2>&1
 836 }
 837
 838 cc_o(){
 839     eval printf '%s\\n' $CC_O
 840 }
 841
 842 cc_e(){
 843     eval printf '%s\\n' $CC_E
 844 }
 845
 846 check_cc(){
 847     log check_cc "$@"
 848     cat > $TMPC
 849     log_file $TMPC
 850     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 851 }
 852
 853 check_cxx(){
 854     log check_cxx "$@"
 855     cat > $TMPCPP
 856     log_file $TMPCPP
 857     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 858 }
 859
 860 check_oc(){
 861     log check_oc "$@"
 862     cat > $TMPM
 863     log_file $TMPM
 864     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 865 }
 866
 867 check_cpp(){
 868     log check_cpp "$@"
 869     cat > $TMPC
 870     log_file $TMPC
 871     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 872 }
 873
 874 as_o(){
 875     eval printf '%s\\n' $AS_O
 876 }
 877
 878 check_as(){
 879     log check_as "$@"
 880     cat > $TMPS
 881     log_file $TMPS
 882     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 883 }
 884
 885 check_inline_asm(){
 886     log check_inline_asm "$@"
 887     name="$1"
 888     code="$2"
 889     shift 2
 890     disable $name
 891     check_cc "$@" <<EOF && enable $name
 892 void foo(void){ __asm__ volatile($code); }
 893 EOF
 894 }
 895
 896 check_insn(){
 897     log check_insn "$@"
 898     check_inline_asm ${1}_inline "\"$2\""
 899     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 900 }
 901
 902 check_yasm(){
 903     log check_yasm "$@"
 904     echo "$1" > $TMPS
 905     log_file $TMPS
 906     shift 1
 907     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 908 }
 909
 910 ld_o(){
 911     eval printf '%s\\n' $LD_O
 912 }
 913
 914 check_ld(){
 915     log check_ld "$@"
 916     type=$1
 917     shift 1
 918     flags=$(filter_out '-l*|*.so' $@)
 919     libs=$(filter '-l*|*.so' $@)
 920     check_$type $($cflags_filter $flags) || return
 921     flags=$($ldflags_filter $flags)
 922     libs=$($ldflags_filter $libs)
 923     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 924 }
 925
 926 print_include(){
 927     hdr=$1
 928     test "${hdr%.h}" = "${hdr}" &&
 929         echo "#include $hdr"    ||
 930         echo "#include <$hdr>"
 931 }
 932
 933 check_code(){
 934     log check_code "$@"
 935     check=$1
 936     headers=$2
 937     code=$3
 938     shift 3
 939     {
 940         for hdr in $headers; do
 941             print_include $hdr
 942         done
 943         echo "int main(void) { $code; return 0; }"
 944     } | check_$check "$@"
 945 }
 946
 947 check_cppflags(){
 948     log check_cppflags "$@"
 949     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 950 int x;
 951 EOF
 952 }
 953
 954 test_cflags(){
 955     log test_cflags "$@"
 956     set -- $($cflags_filter "$@")
 957     check_cc "$@" <<EOF
 958 int x;
 959 EOF
 960 }
 961
 962 check_cflags(){
 963     log check_cflags "$@"
 964     test_cflags "$@" && add_cflags "$@"
 965 }
 966
 967 check_cxxflags(){
 968     log check_cxxflags "$@"
 969     set -- $($cflags_filter "$@")
 970     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 971 int x;
 972 EOF
 973 }
 974
 975 test_ldflags(){
 976     log test_ldflags "$@"
 977     check_ld "cc" "$@" <<EOF
 978 int main(void){ return 0; }
 979 EOF
 980 }
 981
 982 check_ldflags(){
 983     log check_ldflags "$@"
 984     test_ldflags "$@" && add_ldflags "$@"
 985 }
 986
 987 test_stripflags(){
 988     log test_stripflags "$@"
 989     # call check_cc to get a fresh TMPO
 990     check_cc <<EOF
 991 int main(void) { return 0; }
 992 EOF
 993     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 994 }
 995
 996 check_stripflags(){
 997     log check_stripflags "$@"
 998     test_stripflags "$@" && add_stripflags "$@"
 999 }
1000
1001 check_header(){
1002     log check_header "$@"
1003     header=$1
1004     shift
1005     disable_safe $header
1006     check_cpp "$@" <<EOF && enable_safe $header
1007 #include <$header>
1008 int x;
1009 EOF
1010 }
1011
1012 check_header_oc(){
1013     log check_header_oc "$@"
1014     rm -f -- "$TMPO"
1015     header=$1
1016     shift
1017     disable_safe $header
1018     {
1019        echo "#include <$header>"
1020        echo "int main(void) { return 0; }"
1021     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1022 }
1023
1024 check_func(){
1025     log check_func "$@"
1026     func=$1
1027     shift
1028     disable $func
1029     check_ld "cc" "$@" <<EOF && enable $func
1030 extern int $func();
1031 int main(void){ $func(); }
1032 EOF
1033 }
1034
1035 check_mathfunc(){
1036     log check_mathfunc "$@"
1037     func=$1
1038     narg=$2
1039     shift 2
1040     test $narg = 2 && args="f, g" || args="f"
1041     disable $func
1042     check_ld "cc" "$@" <<EOF && enable $func
1043 #include <math.h>
1044 float foo(float f, float g) { return $func($args); }
1045 int main(void){ return (int) foo; }
1046 EOF
1047 }
1048
1049 check_func_headers(){
1050     log check_func_headers "$@"
1051     headers=$1
1052     funcs=$2
1053     shift 2
1054     {
1055         for hdr in $headers; do
1056             print_include $hdr
1057         done
1058         for func in $funcs; do
1059             echo "long check_$func(void) { return (long) $func; }"
1060         done
1061         echo "int main(void) { return 0; }"
1062     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1063 }
1064
1065 check_class_headers_cpp(){
1066     log check_class_headers_cpp "$@"
1067     headers=$1
1068     classes=$2
1069     shift 2
1070     {
1071         for hdr in $headers; do
1072             echo "#include <$hdr>"
1073         done
1074         echo "int main(void) { "
1075         i=1
1076         for class in $classes; do
1077             echo "$class obj$i;"
1078             i=$(expr $i + 1)
1079         done
1080         echo "return 0; }"
1081     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1082 }
1083
1084 check_cpp_condition(){
1085     log check_cpp_condition "$@"
1086     header=$1
1087     condition=$2
1088     shift 2
1089     check_cpp "$@" <<EOF
1090 #include <$header>
1091 #if !($condition)
1092 #error "unsatisfied condition: $condition"
1093 #endif
1094 EOF
1095 }
1096
1097 check_lib(){
1098     log check_lib "$@"
1099     header="$1"
1100     func="$2"
1101     shift 2
1102     check_header $header && check_func $func "$@" && add_extralibs "$@"
1103 }
1104
1105 check_lib2(){
1106     log check_lib2 "$@"
1107     headers="$1"
1108     funcs="$2"
1109     shift 2
1110     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1111 }
1112
1113 check_lib_cpp(){
1114     log check_lib_cpp "$@"
1115     headers="$1"
1116     classes="$2"
1117     shift 2
1118     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1119 }
1120
1121 check_pkg_config(){
1122     log check_pkg_config "$@"
1123     pkgandversion="$1"
1124     pkg="${1%% *}"
1125     headers="$2"
1126     funcs="$3"
1127     shift 3
1128     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1129     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1130     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1131     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1132         set_safe "${pkg}_cflags" $pkg_cflags   &&
1133         set_safe "${pkg}_libs"   $pkg_libs
1134 }
1135
1136 check_exec(){
1137     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1138 }
1139
1140 check_exec_crash(){
1141     code=$(cat)
1142
1143     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1144     # are safe but may not be available everywhere.  Thus we use
1145     # raise(SIGTERM) instead.  The check is run in a subshell so we
1146     # can redirect the "Terminated" message from the shell.  SIGBUS
1147     # is not defined by standard C so it is used conditionally.
1148
1149     (check_exec "$@") >> $logfile 2>&1 <<EOF
1150 #include <signal.h>
1151 static void sighandler(int sig){
1152     raise(SIGTERM);
1153 }
1154 int foo(void){
1155     $code
1156 }
1157 int (*func_ptr)(void) = foo;
1158 int main(void){
1159     signal(SIGILL, sighandler);
1160     signal(SIGFPE, sighandler);
1161     signal(SIGSEGV, sighandler);
1162 #ifdef SIGBUS
1163     signal(SIGBUS, sighandler);
1164 #endif
1165     return func_ptr();
1166 }
1167 EOF
1168 }
1169
1170 check_type(){
1171     log check_type "$@"
1172     headers=$1
1173     type=$2
1174     shift 2
1175     disable_safe "$type"
1176     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1177 }
1178
1179 check_struct(){
1180     log check_struct "$@"
1181     headers=$1
1182     struct=$2
1183     member=$3
1184     shift 3
1185     disable_safe "${struct}_${member}"
1186     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1187         enable_safe "${struct}_${member}"
1188 }
1189
1190 check_builtin(){
1191     log check_builtin "$@"
1192     name=$1
1193     headers=$2
1194     builtin=$3
1195     shift 3
1196     disable "$name"
1197     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1198 }
1199
1200 check_compile_assert(){
1201     log check_compile_assert "$@"
1202     name=$1
1203     headers=$2
1204     condition=$3
1205     shift 3
1206     disable "$name"
1207     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1208 }
1209
1210 require(){
1211     name="$1"
1212     header="$2"
1213     func="$3"
1214     shift 3
1215     check_lib $header $func "$@" || die "ERROR: $name not found"
1216 }
1217
1218 require2(){
1219     name="$1"
1220     headers="$2"
1221     func="$3"
1222     shift 3
1223     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1224 }
1225
1226 require_cpp(){
1227     name="$1"
1228     headers="$2"
1229     classes="$3"
1230     shift 3
1231     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1232 }
1233
1234 use_pkg_config(){
1235     pkg="$1"
1236     check_pkg_config "$@" || return 1
1237     add_cflags    $(get_safe "${pkg}_cflags")
1238     add_extralibs $(get_safe "${pkg}_libs")
1239 }
1240
1241 require_pkg_config(){
1242     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1243 }
1244
1245 require_libfreetype(){
1246     log require_libfreetype "$@"
1247     pkg="freetype2"
1248     check_cmd $pkg_config --exists --print-errors $pkg \
1249       || die "ERROR: $pkg not found"
1250     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1251     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1252     {
1253         echo "#include <ft2build.h>"
1254         echo "#include FT_FREETYPE_H"
1255         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1256         echo "int main(void) { return 0; }"
1257     } | check_ld "cc" $pkg_cflags $pkg_libs \
1258       && set_safe "${pkg}_cflags" $pkg_cflags \
1259       && set_safe "${pkg}_libs"   $pkg_libs \
1260       || die "ERROR: $pkg not found"
1261     add_cflags    $(get_safe "${pkg}_cflags")
1262     add_extralibs $(get_safe "${pkg}_libs")
1263 }
1264
1265 hostcc_e(){
1266     eval printf '%s\\n' $HOSTCC_E
1267 }
1268
1269 hostcc_o(){
1270     eval printf '%s\\n' $HOSTCC_O
1271 }
1272
1273 check_host_cc(){
1274     log check_host_cc "$@"
1275     cat > $TMPC
1276     log_file $TMPC
1277     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1278 }
1279
1280 check_host_cpp(){
1281     log check_host_cpp "$@"
1282     cat > $TMPC
1283     log_file $TMPC
1284     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1285 }
1286
1287 check_host_cppflags(){
1288     log check_host_cppflags "$@"
1289     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1290 int x;
1291 EOF
1292 }
1293
1294 check_host_cflags(){
1295     log check_host_cflags "$@"
1296     set -- $($host_cflags_filter "$@")
1297     check_host_cc "$@" <<EOF && append host_cflags "$@"
1298 int x;
1299 EOF
1300 }
1301
1302 check_host_cpp_condition(){
1303     log check_host_cpp_condition "$@"
1304     header=$1
1305     condition=$2
1306     shift 2
1307     check_host_cpp "$@" <<EOF
1308 #include <$header>
1309 #if !($condition)
1310 #error "unsatisfied condition: $condition"
1311 #endif
1312 EOF
1313 }
1314
1315 apply(){
1316     file=$1
1317     shift
1318     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1319 }
1320
1321 cp_if_changed(){
1322     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1323     mkdir -p "$(dirname $2)"
1324     $cp_f "$1" "$2"
1325 }
1326
1327 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1328 # system-dependent things.
1329
1330 COMPONENT_LIST="
1331     bsfs
1332     decoders
1333     demuxers
1334     encoders
1335     filters
1336     hwaccels
1337     indevs
1338     muxers
1339     outdevs
1340     parsers
1341     protocols
1342 "
1343
1344 EXAMPLE_LIST="
1345     avio_reading_example
1346     avio_dir_cmd_example
1347     decoding_encoding_example
1348     demuxing_decoding_example
1349     extract_mvs_example
1350     filter_audio_example
1351     filtering_audio_example
1352     filtering_video_example
1353     metadata_example
1354     muxing_example
1355     qsvdec_example
1356     remuxing_example
1357     resampling_audio_example
1358     scaling_video_example
1359     transcode_aac_example
1360     transcoding_example
1361 "
1362
1363 EXTERNAL_LIBRARY_LIST="
1364     avisynth
1365     bzlib
1366     crystalhd
1367     decklink
1368     frei0r
1369     gnutls
1370     iconv
1371     ladspa
1372     libaacplus
1373     libass
1374     libbluray
1375     libbs2b
1376     libcaca
1377     libcdio
1378     libcelt
1379     libdc1394
1380     libdcadec
1381     libfaac
1382     libfdk_aac
1383     libflite
1384     libfontconfig
1385     libfreetype
1386     libfribidi
1387     libgme
1388     libgsm
1389     libiec61883
1390     libilbc
1391     libkvazaar
1392     libmfx
1393     libmodplug
1394     libmp3lame
1395     libnut
1396     libopencore_amrnb
1397     libopencore_amrwb
1398     libopencv
1399     libopenh264
1400     libopenjpeg
1401     libopus
1402     libpulse
1403     libquvi
1404     librtmp
1405     libschroedinger
1406     libshine
1407     libsmbclient
1408     libsnappy
1409     libsoxr
1410     libspeex
1411     libssh
1412     libstagefright_h264
1413     libtheora
1414     libtwolame
1415     libutvideo
1416     libv4l2
1417     libvidstab
1418     libvo_aacenc
1419     libvo_amrwbenc
1420     libvorbis
1421     libvpx
1422     libwavpack
1423     libwebp
1424     libx264
1425     libx265
1426     libxavs
1427     libxcb
1428     libxcb_shm
1429     libxcb_shape
1430     libxcb_xfixes
1431     libxvid
1432     libzmq
1433     libzvbi
1434     lzma
1435     mmal
1436     nvenc
1437     openal
1438     opencl
1439     opengl
1440     openssl
1441     sdl
1442     securetransport
1443     x11grab
1444     xlib
1445     zlib
1446 "
1447
1448 DOCUMENT_LIST="
1449     doc
1450     htmlpages
1451     manpages
1452     podpages
1453     txtpages
1454 "
1455
1456 FEATURE_LIST="
1457     ftrapv
1458     gray
1459     hardcoded_tables
1460     runtime_cpudetect
1461     safe_bitstream_reader
1462     shared
1463     small
1464     static
1465     swscale_alpha
1466 "
1467
1468 HWACCEL_LIST="
1469     d3d11va
1470     dxva2
1471     vaapi
1472     vda
1473     vdpau
1474     videotoolbox
1475     xvmc
1476 "
1477
1478 LIBRARY_LIST="
1479     avcodec
1480     avdevice
1481     avfilter
1482     avformat
1483     avresample
1484     avutil
1485     postproc
1486     swresample
1487     swscale
1488 "
1489
1490 LICENSE_LIST="
1491     gpl
1492     nonfree
1493     version3
1494 "
1495
1496 PROGRAM_LIST="
1497     ffplay
1498     ffprobe
1499     ffserver
1500     ffmpeg
1501 "
1502
1503 SUBSYSTEM_LIST="
1504     dct
1505     dwt
1506     error_resilience
1507     faan
1508     fast_unaligned
1509     fft
1510     lsp
1511     lzo
1512     mdct
1513     pixelutils
1514     network
1515     rdft
1516 "
1517
1518 CONFIG_LIST="
1519     $COMPONENT_LIST
1520     $DOCUMENT_LIST
1521     $EXAMPLE_LIST
1522     $EXTERNAL_LIBRARY_LIST
1523     $FEATURE_LIST
1524     $HWACCEL_LIST
1525     $LICENSE_LIST
1526     $LIBRARY_LIST
1527     $PROGRAM_LIST
1528     $SUBSYSTEM_LIST
1529     fontconfig
1530     incompatible_libav_abi
1531     memalign_hack
1532     memory_poisoning
1533     neon_clobber_test
1534     pic
1535     pod2man
1536     raise_major
1537     thumb
1538     valgrind_backtrace
1539     xmm_clobber_test
1540 "
1541
1542 THREADS_LIST="
1543     pthreads
1544     os2threads
1545     w32threads
1546 "
1547
1548 ATOMICS_LIST="
1549     atomics_gcc
1550     atomics_suncc
1551     atomics_win32
1552 "
1553
1554 ARCH_LIST="
1555     aarch64
1556     alpha
1557     arm
1558     avr32
1559     avr32_ap
1560     avr32_uc
1561     bfin
1562     ia64
1563     m68k
1564     mips
1565     mips64
1566     parisc
1567     ppc
1568     ppc64
1569     s390
1570     sh4
1571     sparc
1572     sparc64
1573     tilegx
1574     tilepro
1575     tomi
1576     x86
1577     x86_32
1578     x86_64
1579 "
1580
1581 ARCH_EXT_LIST_ARM="
1582     armv5te
1583     armv6
1584     armv6t2
1585     armv8
1586     neon
1587     vfp
1588     vfpv3
1589     setend
1590 "
1591
1592 ARCH_EXT_LIST_MIPS="
1593     mipsfpu
1594     mips32r2
1595     mips32r5
1596     mips64r6
1597     mipsdspr1
1598     mipsdspr2
1599     msa
1600 "
1601
1602 ARCH_EXT_LIST_LOONGSON="
1603     loongson2
1604     loongson3
1605     mmi
1606 "
1607
1608 ARCH_EXT_LIST_X86_SIMD="
1609     amd3dnow
1610     amd3dnowext
1611     avx
1612     avx2
1613     fma3
1614     fma4
1615     mmx
1616     mmxext
1617     sse
1618     sse2
1619     sse3
1620     sse4
1621     sse42
1622     ssse3
1623     xop
1624 "
1625
1626 ARCH_EXT_LIST_PPC="
1627     altivec
1628     dcbzl
1629     ldbrx
1630     power8
1631     ppc4xx
1632     vsx
1633 "
1634
1635 ARCH_EXT_LIST_X86="
1636     $ARCH_EXT_LIST_X86_SIMD
1637     cpunop
1638     i686
1639 "
1640
1641 ARCH_EXT_LIST="
1642     $ARCH_EXT_LIST_ARM
1643     $ARCH_EXT_LIST_PPC
1644     $ARCH_EXT_LIST_X86
1645     $ARCH_EXT_LIST_MIPS
1646     $ARCH_EXT_LIST_LOONGSON
1647 "
1648
1649 ARCH_FEATURES="
1650     aligned_stack
1651     fast_64bit
1652     fast_clz
1653     fast_cmov
1654     local_aligned_8
1655     local_aligned_16
1656     local_aligned_32
1657     simd_align_16
1658 "
1659
1660 BUILTIN_LIST="
1661     atomic_cas_ptr
1662     atomic_compare_exchange
1663     machine_rw_barrier
1664     MemoryBarrier
1665     mm_empty
1666     rdtsc
1667     sarestart
1668     sync_val_compare_and_swap
1669 "
1670 HAVE_LIST_CMDLINE="
1671     inline_asm
1672     symver
1673     yasm
1674 "
1675
1676 HAVE_LIST_PUB="
1677     bigendian
1678     fast_unaligned
1679     incompatible_libav_abi
1680 "
1681
1682 HEADERS_LIST="
1683     alsa_asoundlib_h
1684     altivec_h
1685     arpa_inet_h
1686     asm_types_h
1687     cdio_paranoia_h
1688     cdio_paranoia_paranoia_h
1689     dev_bktr_ioctl_bt848_h
1690     dev_bktr_ioctl_meteor_h
1691     dev_ic_bt8xx_h
1692     dev_video_bktr_ioctl_bt848_h
1693     dev_video_meteor_ioctl_meteor_h
1694     direct_h
1695     dlfcn_h
1696     d3d11_h
1697     dxva_h
1698     ES2_gl_h
1699     gsm_h
1700     io_h
1701     mach_mach_time_h
1702     machine_ioctl_bt848_h
1703     machine_ioctl_meteor_h
1704     malloc_h
1705     openjpeg_1_5_openjpeg_h
1706     OpenGL_gl3_h
1707     poll_h
1708     sndio_h
1709     soundcard_h
1710     sys_mman_h
1711     sys_param_h
1712     sys_resource_h
1713     sys_select_h
1714     sys_soundcard_h
1715     sys_time_h
1716     sys_un_h
1717     sys_videoio_h
1718     termios_h
1719     udplite_h
1720     unistd_h
1721     valgrind_valgrind_h
1722     windows_h
1723     winsock2_h
1724 "
1725
1726 INTRINSICS_LIST="
1727     intrinsics_neon
1728 "
1729
1730 MATH_FUNCS="
1731     atanf
1732     atan2f
1733     cbrt
1734     cbrtf
1735     copysign
1736     cosf
1737     erf
1738     exp2
1739     exp2f
1740     expf
1741     isinf
1742     isnan
1743     ldexpf
1744     llrint
1745     llrintf
1746     log2
1747     log2f
1748     log10f
1749     lrint
1750     lrintf
1751     powf
1752     rint
1753     round
1754     roundf
1755     sinf
1756     trunc
1757     truncf
1758 "
1759
1760 SYSTEM_FUNCS="
1761     access
1762     aligned_malloc
1763     clock_gettime
1764     closesocket
1765     CommandLineToArgvW
1766     CoTaskMemFree
1767     CryptGenRandom
1768     dlopen
1769     fcntl
1770     flt_lim
1771     fork
1772     getaddrinfo
1773     gethrtime
1774     getopt
1775     GetProcessAffinityMask
1776     GetProcessMemoryInfo
1777     GetProcessTimes
1778     getrusage
1779     getservbyport
1780     GetSystemTimeAsFileTime
1781     gettimeofday
1782     glob
1783     glXGetProcAddress
1784     gmtime_r
1785     inet_aton
1786     isatty
1787     jack_port_get_latency_range
1788     kbhit
1789     localtime_r
1790     lzo1x_999_compress
1791     mach_absolute_time
1792     MapViewOfFile
1793     memalign
1794     mkstemp
1795     mmap
1796     mprotect
1797     nanosleep
1798     PeekNamedPipe
1799     posix_memalign
1800     pthread_cancel
1801     sched_getaffinity
1802     SetConsoleTextAttribute
1803     SetConsoleCtrlHandler
1804     setmode
1805     setrlimit
1806     Sleep
1807     strerror_r
1808     sysconf
1809     sysctl
1810     usleep
1811     VirtualAlloc
1812     wglGetProcAddress
1813 "
1814
1815 TOOLCHAIN_FEATURES="
1816     as_dn_directive
1817     as_func
1818     as_object_arch
1819     asm_mod_q
1820     attribute_may_alias
1821     attribute_packed
1822     ebp_available
1823     ebx_available
1824     gnu_as
1825     gnu_windres
1826     ibm_asm
1827     inline_asm_labels
1828     inline_asm_nonlocal_labels
1829     inline_asm_direct_symbol_refs
1830     pragma_deprecated
1831     rsync_contimeout
1832     symver_asm_label
1833     symver_gnu_asm
1834     vfp_args
1835     xform_asm
1836     xmm_clobbers
1837 "
1838
1839 TYPES_LIST="
1840     CONDITION_VARIABLE_Ptr
1841     socklen_t
1842     struct_addrinfo
1843     struct_dcadec_exss_info_matrix_encoding
1844     struct_group_source_req
1845     struct_ip_mreq_source
1846     struct_ipv6_mreq
1847     struct_pollfd
1848     struct_rusage_ru_maxrss
1849     struct_sctp_event_subscribe
1850     struct_sockaddr_in6
1851     struct_sockaddr_sa_len
1852     struct_sockaddr_storage
1853     struct_stat_st_mtim_tv_nsec
1854     struct_v4l2_frmivalenum_discrete
1855 "
1856
1857 HAVE_LIST="
1858     $ARCH_EXT_LIST
1859     $(add_suffix _external $ARCH_EXT_LIST)
1860     $(add_suffix _inline   $ARCH_EXT_LIST)
1861     $ARCH_FEATURES
1862     $ATOMICS_LIST
1863     $BUILTIN_LIST
1864     $HAVE_LIST_CMDLINE
1865     $HAVE_LIST_PUB
1866     $HEADERS_LIST
1867     $INTRINSICS_LIST
1868     $MATH_FUNCS
1869     $SYSTEM_FUNCS
1870     $THREADS_LIST
1871     $TOOLCHAIN_FEATURES
1872     $TYPES_LIST
1873     atomics_native
1874     dos_paths
1875     dxva2api_cobj
1876     dxva2_lib
1877     libc_msvcrt
1878     libdc1394_1
1879     libdc1394_2
1880     makeinfo
1881     makeinfo_html
1882     perl
1883     pod2man
1884     sdl
1885     section_data_rel_ro
1886     texi2html
1887     threads
1888     vaapi_x11
1889     vdpau_x11
1890     xlib
1891 "
1892
1893 # options emitted with CONFIG_ prefix but not available on the command line
1894 CONFIG_EXTRA="
1895     aandcttables
1896     ac3dsp
1897     audio_frame_queue
1898     audiodsp
1899     blockdsp
1900     bswapdsp
1901     cabac
1902     dvprofile
1903     exif
1904     faandct
1905     faanidct
1906     fdctdsp
1907     flacdsp
1908     fmtconvert
1909     frame_thread_encoder
1910     g722dsp
1911     gcrypt
1912     gmp
1913     golomb
1914     gplv3
1915     h263dsp
1916     h264chroma
1917     h264dsp
1918     h264pred
1919     h264qpel
1920     hpeldsp
1921     huffman
1922     huffyuvdsp
1923     huffyuvencdsp
1924     idctdsp
1925     iirfilter
1926     imdct15
1927     intrax8
1928     ividsp
1929     jpegtables
1930     libx262
1931     lgplv3
1932     llauddsp
1933     llviddsp
1934     lpc
1935     me_cmp
1936     mpeg_er
1937     mpegaudio
1938     mpegaudiodsp
1939     mpegvideo
1940     mpegvideoenc
1941     mss34dsp
1942     pixblockdsp
1943     qpeldsp
1944     qsv
1945     qsvdec
1946     qsvenc
1947     rangecoder
1948     riffdec
1949     riffenc
1950     rtpdec
1951     rtpenc_chain
1952     rv34dsp
1953     sinewin
1954     snappy
1955     startcode
1956     texturedsp
1957     texturedspenc
1958     tpeldsp
1959     videodsp
1960     vp3dsp
1961     vp56dsp
1962     vp8dsp
1963     wma_freqs
1964     wmv2dsp
1965 "
1966
1967 CMDLINE_SELECT="
1968     $ARCH_EXT_LIST
1969     $CONFIG_LIST
1970     $HAVE_LIST_CMDLINE
1971     $THREADS_LIST
1972     asm
1973     cross_compile
1974     debug
1975     extra_warnings
1976     logging
1977     lto
1978     optimizations
1979     rpath
1980     stripping
1981 "
1982
1983 PATHS_LIST="
1984     bindir
1985     datadir
1986     docdir
1987     incdir
1988     libdir
1989     mandir
1990     pkgconfigdir
1991     prefix
1992     shlibdir
1993 "
1994
1995 CMDLINE_SET="
1996     $PATHS_LIST
1997     ar
1998     arch
1999     as
2000     assert_level
2001     build_suffix
2002     cc
2003     cpu
2004     cross_prefix
2005     cxx
2006     dep_cc
2007     doxygen
2008     env
2009     extra_version
2010     gas
2011     host_cc
2012     host_cflags
2013     host_ld
2014     host_ldflags
2015     host_libs
2016     host_os
2017     install
2018     ld
2019     logfile
2020     malloc_prefix
2021     nm
2022     optflags
2023     pkg_config
2024     pkg_config_flags
2025     progs_suffix
2026     random_seed
2027     ranlib
2028     samples
2029     strip
2030     sws_max_filter_size
2031     sysinclude
2032     sysroot
2033     target_exec
2034     target_os
2035     target_path
2036     target_samples
2037     tempprefix
2038     toolchain
2039     valgrind
2040     yasmexe
2041 "
2042
2043 CMDLINE_APPEND="
2044     extra_cflags
2045     extra_cxxflags
2046     host_cppflags
2047 "
2048
2049 # code dependency declarations
2050
2051 # architecture extensions
2052
2053 armv5te_deps="arm"
2054 armv6_deps="arm"
2055 armv6t2_deps="arm"
2056 armv8_deps="aarch64"
2057 neon_deps_any="aarch64 arm"
2058 intrinsics_neon_deps="neon"
2059 vfp_deps_any="aarch64 arm"
2060 vfpv3_deps="vfp"
2061 setend_deps="arm"
2062
2063 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2064
2065 mipsfpu_deps="mips"
2066 mipsdspr1_deps="mips"
2067 mipsdspr2_deps="mips"
2068 mips32r2_deps="mips"
2069 mips32r5_deps="mips"
2070 mips64r6_deps="mips"
2071 msa_deps="mips"
2072 mmi_deps="mips"
2073
2074 altivec_deps="ppc"
2075 dcbzl_deps="ppc"
2076 ldbrx_deps="ppc"
2077 ppc4xx_deps="ppc"
2078 vsx_deps="altivec"
2079 power8_deps="vsx"
2080
2081 cpunop_deps="i686"
2082 x86_64_select="i686"
2083 x86_64_suggest="fast_cmov"
2084
2085 amd3dnow_deps="mmx"
2086 amd3dnowext_deps="amd3dnow"
2087 i686_deps="x86"
2088 mmx_deps="x86"
2089 mmxext_deps="mmx"
2090 sse_deps="mmxext"
2091 sse2_deps="sse"
2092 sse3_deps="sse2"
2093 ssse3_deps="sse3"
2094 sse4_deps="ssse3"
2095 sse42_deps="sse4"
2096 avx_deps="sse42"
2097 xop_deps="avx"
2098 fma3_deps="avx"
2099 fma4_deps="avx"
2100 avx2_deps="avx"
2101
2102 mmx_external_deps="yasm"
2103 mmx_inline_deps="inline_asm"
2104 mmx_suggest="mmx_external mmx_inline"
2105
2106 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2107     eval dep=\$${ext}_deps
2108     eval ${ext}_external_deps='"${dep}_external"'
2109     eval ${ext}_inline_deps='"${dep}_inline"'
2110     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2111 done
2112
2113 aligned_stack_if_any="aarch64 ppc x86"
2114 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2115 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2116 fast_unaligned_if_any="aarch64 ppc x86"
2117 simd_align_16_if_any="altivec neon sse"
2118
2119 # system capabilities
2120 symver_if_any="symver_asm_label symver_gnu_asm"
2121 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2122
2123 # threading support
2124 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2125 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2126 atomics_win32_if="MemoryBarrier"
2127 atomics_native_if_any="$ATOMICS_LIST"
2128 w32threads_deps="atomics_native"
2129 threads_if_any="$THREADS_LIST"
2130
2131 # subsystems
2132 dct_select="rdft"
2133 error_resilience_select="me_cmp"
2134 faandct_deps="faan fdctdsp"
2135 faanidct_deps="faan idctdsp"
2136 frame_thread_encoder_deps="encoders threads"
2137 intrax8_select="error_resilience"
2138 mdct_select="fft"
2139 rdft_select="fft"
2140 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2141 mpeg_er_select="error_resilience"
2142 mpegaudio_select="mpegaudiodsp"
2143 mpegaudiodsp_select="dct"
2144 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2145 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2146 qsvdec_select="qsv"
2147 qsvenc_select="qsv"
2148
2149 # decoders / encoders
2150 aac_decoder_select="imdct15 mdct sinewin"
2151 aac_fixed_decoder_select="mdct sinewin"
2152 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2153 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2154 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2155 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2156 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2157 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2158 adpcm_g722_decoder_select="g722dsp"
2159 adpcm_g722_encoder_select="g722dsp"
2160 aic_decoder_select="golomb idctdsp"
2161 alac_encoder_select="lpc"
2162 als_decoder_select="bswapdsp"
2163 amrnb_decoder_select="lsp"
2164 amrwb_decoder_select="lsp"
2165 amv_decoder_select="sp5x_decoder exif"
2166 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2167 ape_decoder_select="bswapdsp llauddsp"
2168 apng_decoder_select="zlib"
2169 apng_encoder_select="huffyuvencdsp zlib"
2170 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2171 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2172 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2173 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2174 atrac1_decoder_select="mdct sinewin"
2175 atrac3_decoder_select="mdct"
2176 atrac3p_decoder_select="mdct sinewin"
2177 avrn_decoder_select="exif jpegtables"
2178 bink_decoder_select="blockdsp hpeldsp"
2179 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2180 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2181 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2182 cllc_decoder_select="bswapdsp"
2183 comfortnoise_encoder_select="lpc"
2184 cook_decoder_select="audiodsp mdct sinewin"
2185 cscd_decoder_select="lzo"
2186 cscd_decoder_suggest="zlib"
2187 dca_decoder_select="fmtconvert mdct"
2188 dds_decoder_select="texturedsp"
2189 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2190 dnxhd_decoder_select="blockdsp idctdsp"
2191 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2192 dvvideo_decoder_select="dvprofile idctdsp"
2193 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2194 dxa_decoder_select="zlib"
2195 eac3_decoder_select="ac3_decoder"
2196 eac3_encoder_select="ac3_encoder"
2197 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2198 eatgq_decoder_select="aandcttables"
2199 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2200 exr_decoder_select="zlib"
2201 ffv1_decoder_select="golomb rangecoder"
2202 ffv1_encoder_select="rangecoder"
2203 ffvhuff_decoder_select="huffyuv_decoder"
2204 ffvhuff_encoder_select="huffyuv_encoder"
2205 fic_decoder_select="golomb"
2206 flac_decoder_select="flacdsp golomb"
2207 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2208 flashsv_decoder_select="zlib"
2209 flashsv_encoder_select="zlib"
2210 flashsv2_encoder_select="zlib"
2211 flashsv2_decoder_select="zlib"
2212 flv_decoder_select="h263_decoder"
2213 flv_encoder_select="h263_encoder"
2214 fourxm_decoder_select="blockdsp bswapdsp"
2215 fraps_decoder_select="bswapdsp huffman"
2216 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2217 g729_decoder_select="audiodsp"
2218 h261_decoder_select="mpegvideo"
2219 h261_encoder_select="aandcttables mpegvideoenc"
2220 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2221 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2222 h263i_decoder_select="h263_decoder"
2223 h263p_decoder_select="h263_decoder"
2224 h263p_encoder_select="h263_encoder"
2225 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2226 h264_decoder_suggest="error_resilience"
2227 h264_qsv_decoder_deps="libmfx"
2228 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2229 h264_qsv_encoder_deps="libmfx"
2230 h264_qsv_encoder_select="qsvenc"
2231 hap_decoder_select="snappy texturedsp"
2232 hap_encoder_deps="libsnappy"
2233 hap_encoder_select="texturedspenc"
2234 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2235 hevc_qsv_encoder_deps="libmfx"
2236 hevc_qsv_decoder_deps="libmfx"
2237 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2238 hevc_qsv_encoder_select="qsvenc"
2239 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2240 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2241 iac_decoder_select="imc_decoder"
2242 imc_decoder_select="bswapdsp fft mdct sinewin"
2243 indeo3_decoder_select="hpeldsp"
2244 indeo4_decoder_select="ividsp"
2245 indeo5_decoder_select="ividsp"
2246 interplay_video_decoder_select="hpeldsp"
2247 jpegls_decoder_select="golomb mjpeg_decoder"
2248 jpegls_encoder_select="golomb"
2249 jv_decoder_select="blockdsp"
2250 lagarith_decoder_select="huffyuvdsp"
2251 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2252 loco_decoder_select="golomb"
2253 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2254 metasound_decoder_select="lsp mdct sinewin"
2255 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2256 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2257 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2258 mjpegb_decoder_select="mjpeg_decoder"
2259 mlp_decoder_select="mlp_parser"
2260 motionpixels_decoder_select="bswapdsp"
2261 mp1_decoder_select="mpegaudio"
2262 mp1float_decoder_select="mpegaudio"
2263 mp2_decoder_select="mpegaudio"
2264 mp2float_decoder_select="mpegaudio"
2265 mp3_decoder_select="mpegaudio"
2266 mp3adu_decoder_select="mpegaudio"
2267 mp3adufloat_decoder_select="mpegaudio"
2268 mp3float_decoder_select="mpegaudio"
2269 mp3on4_decoder_select="mpegaudio"
2270 mp3on4float_decoder_select="mpegaudio"
2271 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2272 mpc8_decoder_select="mpegaudiodsp"
2273 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2274 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2275 mpegvideo_decoder_select="mpegvideo"
2276 mpeg1video_decoder_select="mpegvideo"
2277 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2278 mpeg2video_decoder_select="mpegvideo"
2279 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2280 mpeg2_qsv_decoder_deps="libmfx"
2281 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2282 mpeg2_qsv_encoder_deps="libmfx"
2283 mpeg2_qsv_encoder_select="qsvenc"
2284 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2285 mpeg4_encoder_select="h263_encoder"
2286 msa1_decoder_select="mss34dsp"
2287 msmpeg4v1_decoder_select="h263_decoder"
2288 msmpeg4v2_decoder_select="h263_decoder"
2289 msmpeg4v2_encoder_select="h263_encoder"
2290 msmpeg4v3_decoder_select="h263_decoder"
2291 msmpeg4v3_encoder_select="h263_encoder"
2292 mss2_decoder_select="vc1_decoder"
2293 mts2_decoder_select="mss34dsp"
2294 mxpeg_decoder_select="mjpeg_decoder"
2295 nellymoser_decoder_select="mdct sinewin"
2296 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2297 nuv_decoder_select="idctdsp lzo"
2298 on2avc_decoder_select="mdct"
2299 opus_decoder_deps="swresample"
2300 opus_decoder_select="imdct15"
2301 png_decoder_select="zlib"
2302 png_encoder_select="huffyuvencdsp zlib"
2303 prores_decoder_select="blockdsp idctdsp"
2304 prores_encoder_select="fdctdsp"
2305 qcelp_decoder_select="lsp"
2306 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2307 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2308 ra_144_decoder_select="audiodsp"
2309 ralf_decoder_select="golomb"
2310 rawvideo_decoder_select="bswapdsp"
2311 rtjpeg_decoder_select="me_cmp"
2312 rv10_decoder_select="h263_decoder"
2313 rv10_encoder_select="h263_encoder"
2314 rv20_decoder_select="h263_decoder"
2315 rv20_encoder_select="h263_encoder"
2316 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2317 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2318 shorten_decoder_select="golomb"
2319 sipr_decoder_select="lsp"
2320 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2321 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2322 sonic_decoder_select="golomb rangecoder"
2323 sonic_encoder_select="golomb rangecoder"
2324 sonic_ls_encoder_select="golomb rangecoder"
2325 sp5x_decoder_select="mjpeg_decoder"
2326 svq1_decoder_select="hpeldsp"
2327 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2328 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2329 svq3_decoder_suggest="zlib"
2330 tak_decoder_select="audiodsp"
2331 tdsc_decoder_select="zlib mjpeg_decoder"
2332 theora_decoder_select="vp3_decoder"
2333 thp_decoder_select="mjpeg_decoder"
2334 tiff_decoder_suggest="zlib lzma"
2335 tiff_encoder_suggest="zlib"
2336 truehd_decoder_select="mlp_parser"
2337 truemotion2_decoder_select="bswapdsp"
2338 truespeech_decoder_select="bswapdsp"
2339 tscc_decoder_select="zlib"
2340 twinvq_decoder_select="mdct lsp sinewin"
2341 txd_decoder_select="texturedsp"
2342 utvideo_decoder_select="bswapdsp"
2343 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2344 vble_decoder_select="huffyuvdsp"
2345 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2346 vc1image_decoder_select="vc1_decoder"
2347 vc1_qsv_decoder_deps="libmfx"
2348 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2349 vorbis_decoder_select="mdct"
2350 vorbis_encoder_select="mdct"
2351 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2352 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2353 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2354 vp6a_decoder_select="vp6_decoder"
2355 vp6f_decoder_select="vp6_decoder"
2356 vp7_decoder_select="h264pred videodsp vp8dsp"
2357 vp8_decoder_select="h264pred videodsp vp8dsp"
2358 vp9_decoder_select="videodsp vp9_parser"
2359 webp_decoder_select="vp8_decoder"
2360 wmalossless_decoder_select="llauddsp"
2361 wmapro_decoder_select="mdct sinewin wma_freqs"
2362 wmav1_decoder_select="mdct sinewin wma_freqs"
2363 wmav1_encoder_select="mdct sinewin wma_freqs"
2364 wmav2_decoder_select="mdct sinewin wma_freqs"
2365 wmav2_encoder_select="mdct sinewin wma_freqs"
2366 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2367 wmv1_decoder_select="h263_decoder"
2368 wmv1_encoder_select="h263_encoder"
2369 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2370 wmv2_encoder_select="h263_encoder wmv2dsp"
2371 wmv3_decoder_select="vc1_decoder"
2372 wmv3image_decoder_select="wmv3_decoder"
2373 zerocodec_decoder_select="zlib"
2374 zlib_decoder_select="zlib"
2375 zlib_encoder_select="zlib"
2376 zmbv_decoder_select="zlib"
2377 zmbv_encoder_select="zlib"
2378
2379 # hardware accelerators
2380 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2381 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2382 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2383 vaapi_deps="va_va_h"
2384 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2385 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore -framework CoreServices"
2386 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2387 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2388 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreServices"
2389 xvmc_deps="X11_extensions_XvMClib_h"
2390
2391 h263_vaapi_hwaccel_deps="vaapi"
2392 h263_vaapi_hwaccel_select="h263_decoder"
2393 h263_vdpau_hwaccel_deps="vdpau"
2394 h263_vdpau_hwaccel_select="h263_decoder"
2395 h263_videotoolbox_hwaccel_deps="videotoolbox"
2396 h263_videotoolbox_hwaccel_select="h263_decoder"
2397 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2398 h264_d3d11va_hwaccel_deps="d3d11va"
2399 h264_d3d11va_hwaccel_select="h264_decoder"
2400 h264_dxva2_hwaccel_deps="dxva2"
2401 h264_dxva2_hwaccel_select="h264_decoder"
2402 h264_mmal_decoder_deps="mmal"
2403 h264_mmal_hwaccel_deps="mmal"
2404 h264_mmal_decoder_select="h264_decoder"
2405 h264_mmal_encoder_deps="mmal"
2406 h264_qsv_hwaccel_deps="libmfx"
2407 h264_vaapi_hwaccel_deps="vaapi"
2408 h264_vaapi_hwaccel_select="h264_decoder"
2409 h264_vda_decoder_deps="vda"
2410 h264_vda_decoder_select="h264_decoder"
2411 h264_vda_hwaccel_deps="vda"
2412 h264_vda_hwaccel_select="h264_decoder"
2413 h264_vda_old_hwaccel_deps="vda"
2414 h264_vda_old_hwaccel_select="h264_decoder"
2415 h264_vdpau_decoder_deps="vdpau"
2416 h264_vdpau_decoder_select="h264_decoder"
2417 h264_vdpau_hwaccel_deps="vdpau"
2418 h264_vdpau_hwaccel_select="h264_decoder"
2419 h264_videotoolbox_hwaccel_deps="videotoolbox"
2420 h264_videotoolbox_hwaccel_select="h264_decoder"
2421 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2422 hevc_d3d11va_hwaccel_select="hevc_decoder"
2423 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2424 hevc_dxva2_hwaccel_select="hevc_decoder"
2425 hevc_qsv_hwaccel_deps="libmfx"
2426 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2427 hevc_vdpau_hwaccel_select="hevc_decoder"
2428 mpeg_vdpau_decoder_deps="vdpau"
2429 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2430 mpeg_xvmc_hwaccel_deps="xvmc"
2431 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2432 mpeg1_vdpau_decoder_deps="vdpau"
2433 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2434 mpeg1_vdpau_hwaccel_deps="vdpau"
2435 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2436 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2437 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2438 mpeg1_xvmc_hwaccel_deps="xvmc"
2439 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2440 mpeg2_crystalhd_decoder_select="crystalhd"
2441 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2442 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2443 mpeg2_dxva2_hwaccel_deps="dxva2"
2444 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2445 mpeg2_qsv_hwaccel_deps="libmfx"
2446 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2447 mpeg2_vaapi_hwaccel_deps="vaapi"
2448 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2449 mpeg2_vdpau_hwaccel_deps="vdpau"
2450 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2451 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2452 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2453 mpeg2_xvmc_hwaccel_deps="xvmc"
2454 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2455 mpeg4_crystalhd_decoder_select="crystalhd"
2456 mpeg4_vaapi_hwaccel_deps="vaapi"
2457 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2458 mpeg4_vdpau_decoder_deps="vdpau"
2459 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2460 mpeg4_vdpau_hwaccel_deps="vdpau"
2461 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2462 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2463 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2464 msmpeg4_crystalhd_decoder_select="crystalhd"
2465 vc1_crystalhd_decoder_select="crystalhd"
2466 vc1_d3d11va_hwaccel_deps="d3d11va"
2467 vc1_d3d11va_hwaccel_select="vc1_decoder"
2468 vc1_dxva2_hwaccel_deps="dxva2"
2469 vc1_dxva2_hwaccel_select="vc1_decoder"
2470 vc1_vaapi_hwaccel_deps="vaapi"
2471 vc1_vaapi_hwaccel_select="vc1_decoder"
2472 vc1_vdpau_decoder_deps="vdpau"
2473 vc1_vdpau_decoder_select="vc1_decoder"
2474 vc1_vdpau_hwaccel_deps="vdpau"
2475 vc1_vdpau_hwaccel_select="vc1_decoder"
2476 vc1_qsv_hwaccel_deps="libmfx"
2477 vc1_qsv_hwaccel_select="qsvdec_vc1"
2478 wmv3_crystalhd_decoder_select="crystalhd"
2479 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2480 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2481 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2482 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2483 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2484
2485 # parsers
2486 h264_parser_select="h264_decoder"
2487 hevc_parser_select="golomb"
2488 mpegvideo_parser_select="mpegvideo"
2489 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2490 vc1_parser_select="mpegvideo startcode vc1_decoder"
2491
2492 # bitstream_filters
2493 mjpeg2jpeg_bsf_select="jpegtables"
2494
2495 # external libraries
2496 libaacplus_encoder_deps="libaacplus"
2497 libcelt_decoder_deps="libcelt"
2498 libdcadec_decoder_deps="libdcadec"
2499 libfaac_encoder_deps="libfaac"
2500 libfaac_encoder_select="audio_frame_queue"
2501 libfdk_aac_decoder_deps="libfdk_aac"
2502 libfdk_aac_encoder_deps="libfdk_aac"
2503 libfdk_aac_encoder_select="audio_frame_queue"
2504 libgme_demuxer_deps="libgme"
2505 libgsm_decoder_deps="libgsm"
2506 libgsm_encoder_deps="libgsm"
2507 libgsm_ms_decoder_deps="libgsm"
2508 libgsm_ms_encoder_deps="libgsm"
2509 libilbc_decoder_deps="libilbc"
2510 libilbc_encoder_deps="libilbc"
2511 libkvazaar_encoder_deps="libkvazaar"
2512 libmodplug_demuxer_deps="libmodplug"
2513 libmp3lame_encoder_deps="libmp3lame"
2514 libmp3lame_encoder_select="audio_frame_queue"
2515 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2516 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2517 libopencore_amrnb_encoder_select="audio_frame_queue"
2518 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2519 libopenh264_encoder_deps="libopenh264"
2520 libopenjpeg_decoder_deps="libopenjpeg"
2521 libopenjpeg_encoder_deps="libopenjpeg"
2522 libopus_decoder_deps="libopus"
2523 libopus_encoder_deps="libopus"
2524 libopus_encoder_select="audio_frame_queue"
2525 libquvi_demuxer_deps="libquvi"
2526 libschroedinger_decoder_deps="libschroedinger"
2527 libschroedinger_encoder_deps="libschroedinger"
2528 libshine_encoder_deps="libshine"
2529 libshine_encoder_select="audio_frame_queue"
2530 libspeex_decoder_deps="libspeex"
2531 libspeex_encoder_deps="libspeex"
2532 libspeex_encoder_select="audio_frame_queue"
2533 libstagefright_h264_decoder_deps="libstagefright_h264"
2534 libtheora_encoder_deps="libtheora"
2535 libtwolame_encoder_deps="libtwolame"
2536 libvo_aacenc_encoder_deps="libvo_aacenc"
2537 libvo_aacenc_encoder_select="audio_frame_queue"
2538 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2539 libvorbis_decoder_deps="libvorbis"
2540 libvorbis_encoder_deps="libvorbis"
2541 libvorbis_encoder_select="audio_frame_queue"
2542 libvpx_vp8_decoder_deps="libvpx"
2543 libvpx_vp8_encoder_deps="libvpx"
2544 libvpx_vp9_decoder_deps="libvpx"
2545 libvpx_vp9_encoder_deps="libvpx"
2546 libwavpack_encoder_deps="libwavpack"
2547 libwebp_encoder_deps="libwebp"
2548 libwebp_anim_encoder_deps="libwebp"
2549 libx262_encoder_deps="libx262"
2550 libx264_encoder_deps="libx264"
2551 libx264rgb_encoder_deps="libx264"
2552 libx264rgb_encoder_select="libx264_encoder"
2553 libx265_encoder_deps="libx265"
2554 libxavs_encoder_deps="libxavs"
2555 libxvid_encoder_deps="libxvid"
2556 libutvideo_decoder_deps="libutvideo"
2557 libutvideo_encoder_deps="libutvideo"
2558 libzvbi_teletext_decoder_deps="libzvbi"
2559 nvenc_encoder_deps="nvenc"
2560 nvenc_h264_encoder_deps="nvenc"
2561 nvenc_hevc_encoder_deps="nvenc"
2562
2563 # demuxers / muxers
2564 ac3_demuxer_select="ac3_parser"
2565 asf_demuxer_select="riffdec"
2566 asf_o_demuxer_select="riffdec"
2567 asf_muxer_select="riffenc"
2568 asf_stream_muxer_select="asf_muxer"
2569 avi_demuxer_select="riffdec exif"
2570 avi_muxer_select="riffenc"
2571 avisynth_demuxer_deps="avisynth"
2572 avisynth_demuxer_select="riffdec"
2573 caf_demuxer_select="riffdec"
2574 dash_muxer_select="mp4_muxer"
2575 dirac_demuxer_select="dirac_parser"
2576 dts_demuxer_select="dca_parser"
2577 dtshd_demuxer_select="dca_parser"
2578 dv_demuxer_select="dvprofile"
2579 dv_muxer_select="dvprofile"
2580 dxa_demuxer_select="riffdec"
2581 eac3_demuxer_select="ac3_parser"
2582 f4v_muxer_select="mov_muxer"
2583 flac_demuxer_select="flac_parser"
2584 hds_muxer_select="flv_muxer"
2585 hls_muxer_select="mpegts_muxer"
2586 image2_alias_pix_demuxer_select="image2_demuxer"
2587 image2_brender_pix_demuxer_select="image2_demuxer"
2588 ipod_muxer_select="mov_muxer"
2589 ismv_muxer_select="mov_muxer"
2590 libnut_demuxer_deps="libnut"
2591 libnut_muxer_deps="libnut"
2592 matroska_audio_muxer_select="matroska_muxer"
2593 matroska_demuxer_select="riffdec"
2594 matroska_demuxer_suggest="bzlib lzo zlib"
2595 matroska_muxer_select="riffenc"
2596 mmf_muxer_select="riffenc"
2597 mov_demuxer_select="riffdec"
2598 mov_demuxer_suggest="zlib"
2599 mov_muxer_select="riffenc rtpenc_chain"
2600 mp3_demuxer_select="mpegaudio_parser"
2601 mp4_muxer_select="mov_muxer"
2602 mpegts_muxer_select="adts_muxer latm_muxer"
2603 mpegtsraw_demuxer_select="mpegts_demuxer"
2604 mxf_d10_muxer_select="mxf_muxer"
2605 mxf_opatom_muxer_select="mxf_muxer"
2606 nut_muxer_select="riffenc"
2607 nuv_demuxer_select="riffdec"
2608 oga_muxer_select="ogg_muxer"
2609 ogg_demuxer_select="golomb"
2610 opus_muxer_select="ogg_muxer"
2611 psp_muxer_select="mov_muxer"
2612 rtp_demuxer_select="sdp_demuxer"
2613 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2614 rtsp_demuxer_select="http_protocol rtpdec"
2615 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2616 sap_demuxer_select="sdp_demuxer"
2617 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2618 sdp_demuxer_select="rtpdec"
2619 smoothstreaming_muxer_select="ismv_muxer"
2620 spdif_muxer_select="aac_parser"
2621 spx_muxer_select="ogg_muxer"
2622 tak_demuxer_select="tak_parser"
2623 tg2_muxer_select="mov_muxer"
2624 tgp_muxer_select="mov_muxer"
2625 vobsub_demuxer_select="mpegps_demuxer"
2626 w64_demuxer_select="wav_demuxer"
2627 w64_muxer_select="wav_muxer"
2628 wav_demuxer_select="riffdec"
2629 wav_muxer_select="riffenc"
2630 webm_muxer_select="riffenc"
2631 wtv_demuxer_select="riffdec"
2632 wtv_muxer_select="riffenc"
2633 xmv_demuxer_select="riffdec"
2634 xwma_demuxer_select="riffdec"
2635
2636 # indevs / outdevs
2637 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2638 alsa_outdev_deps="alsa_asoundlib_h"
2639 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2640 avfoundation_indev_select="avfoundation"
2641 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2642 caca_outdev_deps="libcaca"
2643 decklink_outdev_deps="decklink pthreads"
2644 decklink_outdev_extralibs="-lstdc++"
2645 decklink_indev_deps="decklink pthreads"
2646 decklink_indev_extralibs="-lstdc++"
2647 dshow_indev_deps="IBaseFilter"
2648 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2649 dv1394_indev_deps="dv1394"
2650 dv1394_indev_select="dv_demuxer"
2651 fbdev_indev_deps="linux_fb_h"
2652 fbdev_outdev_deps="linux_fb_h"
2653 gdigrab_indev_deps="CreateDIBSection"
2654 gdigrab_indev_extralibs="-lgdi32"
2655 gdigrab_indev_select="bmp_decoder"
2656 iec61883_indev_deps="libiec61883"
2657 jack_indev_deps="jack_jack_h sem_timedwait"
2658 lavfi_indev_deps="avfilter"
2659 libcdio_indev_deps="libcdio"
2660 libdc1394_indev_deps="libdc1394"
2661 libv4l2_indev_deps="libv4l2"
2662 openal_indev_deps="openal"
2663 opengl_outdev_deps="opengl"
2664 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2665 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2666 pulse_indev_deps="libpulse"
2667 pulse_outdev_deps="libpulse"
2668 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2669 qtkit_indev_select="qtkit"
2670 sdl_outdev_deps="sdl"
2671 sndio_indev_deps="sndio_h"
2672 sndio_outdev_deps="sndio_h"
2673 v4l_indev_deps="linux_videodev_h"
2674 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2675 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2676 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2677 vfwcap_indev_extralibs="-lavicap32"
2678 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2679 xv_outdev_extralibs="-lXv -lX11 -lXext"
2680 x11grab_indev_deps="x11grab"
2681 x11grab_xcb_indev_deps="libxcb"
2682
2683 # protocols
2684 async_protocol_deps="pthreads"
2685 bluray_protocol_deps="libbluray"
2686 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2687 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2688 ffrtmpcrypt_protocol_select="tcp_protocol"
2689 ffrtmphttp_protocol_deps="!librtmp_protocol"
2690 ffrtmphttp_protocol_select="http_protocol"
2691 ftp_protocol_select="tcp_protocol"
2692 gopher_protocol_select="network"
2693 http_protocol_select="tcp_protocol"
2694 httpproxy_protocol_select="tcp_protocol"
2695 https_protocol_select="tls_protocol"
2696 icecast_protocol_select="http_protocol"
2697 librtmp_protocol_deps="librtmp"
2698 librtmpe_protocol_deps="librtmp"
2699 librtmps_protocol_deps="librtmp"
2700 librtmpt_protocol_deps="librtmp"
2701 librtmpte_protocol_deps="librtmp"
2702 libsmbclient_protocol_deps="libsmbclient gplv3"
2703 libssh_protocol_deps="libssh"
2704 mmsh_protocol_select="http_protocol"
2705 mmst_protocol_select="network"
2706 rtmp_protocol_deps="!librtmp_protocol"
2707 rtmp_protocol_select="tcp_protocol"
2708 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2709 rtmps_protocol_deps="!librtmp_protocol"
2710 rtmps_protocol_select="tls_protocol"
2711 rtmpt_protocol_select="ffrtmphttp_protocol"
2712 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2713 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2714 rtp_protocol_select="udp_protocol"
2715 sctp_protocol_deps="struct_sctp_event_subscribe"
2716 sctp_protocol_select="network"
2717 srtp_protocol_select="rtp_protocol"
2718 tcp_protocol_select="network"
2719 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2720 tls_gnutls_protocol_select="tcp_protocol"
2721 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2722 tls_openssl_protocol_select="tcp_protocol"
2723 tls_securetransport_protocol_deps="securetransport"
2724 tls_securetransport_protocol_select="tcp_protocol"
2725 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2726 udp_protocol_select="network"
2727 udplite_protocol_select="network"
2728 unix_protocol_deps="sys_un_h"
2729 unix_protocol_select="network"
2730
2731 # filters
2732 amovie_filter_deps="avcodec avformat"
2733 aresample_filter_deps="swresample"
2734 ass_filter_deps="libass"
2735 asyncts_filter_deps="avresample"
2736 atempo_filter_deps="avcodec"
2737 atempo_filter_select="rdft"
2738 azmq_filter_deps="libzmq"
2739 blackframe_filter_deps="gpl"
2740 boxblur_filter_deps="gpl"
2741 bs2b_filter_deps="libbs2b"
2742 colormatrix_filter_deps="gpl"
2743 cover_rect_filter_deps="avcodec avformat gpl"
2744 cropdetect_filter_deps="gpl"
2745 delogo_filter_deps="gpl"
2746 deshake_filter_select="pixelutils"
2747 drawtext_filter_deps="libfreetype"
2748 dynaudnorm_filter_deps="copysign erf"
2749 ebur128_filter_deps="gpl"
2750 eq_filter_deps="gpl"
2751 fftfilt_filter_deps="avcodec"
2752 fftfilt_filter_select="rdft"
2753 flite_filter_deps="libflite"
2754 find_rect_filter_deps="avcodec avformat gpl"
2755 frei0r_filter_deps="frei0r dlopen"
2756 frei0r_src_filter_deps="frei0r dlopen"
2757 fspp_filter_deps="gpl"
2758 geq_filter_deps="gpl"
2759 histeq_filter_deps="gpl"
2760 hqdn3d_filter_deps="gpl"
2761 interlace_filter_deps="gpl"
2762 kerndeint_filter_deps="gpl"
2763 ladspa_filter_deps="ladspa dlopen"
2764 mcdeint_filter_deps="avcodec gpl"
2765 movie_filter_deps="avcodec avformat"
2766 mpdecimate_filter_deps="gpl"
2767 mpdecimate_filter_select="pixelutils"
2768 mptestsrc_filter_deps="gpl"
2769 negate_filter_deps="lut_filter"
2770 perspective_filter_deps="gpl"
2771 pp7_filter_deps="gpl"
2772 ocv_filter_deps="libopencv"
2773 owdenoise_filter_deps="gpl"
2774 pan_filter_deps="swresample"
2775 phase_filter_deps="gpl"
2776 pp_filter_deps="gpl postproc"
2777 pullup_filter_deps="gpl"
2778 removelogo_filter_deps="avcodec avformat swscale"
2779 repeatfields_filter_deps="gpl"
2780 resample_filter_deps="avresample"
2781 sab_filter_deps="gpl swscale"
2782 scale_filter_deps="swscale"
2783 scale2ref_filter_deps="swscale"
2784 select_filter_select="pixelutils"
2785 smartblur_filter_deps="gpl swscale"
2786 showcqt_filter_deps="avcodec"
2787 showcqt_filter_select="fft"
2788 showspectrum_filter_deps="avcodec"
2789 showspectrum_filter_select="rdft"
2790 spp_filter_deps="gpl avcodec"
2791 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2792 stereo3d_filter_deps="gpl"
2793 subtitles_filter_deps="avformat avcodec libass"
2794 super2xsai_filter_deps="gpl"
2795 tinterlace_filter_deps="gpl"
2796 vidstabdetect_filter_deps="libvidstab"
2797 vidstabtransform_filter_deps="libvidstab"
2798 pixfmts_super2xsai_test_deps="super2xsai_filter"
2799 tinterlace_merge_test_deps="tinterlace_filter"
2800 tinterlace_pad_test_deps="tinterlace_filter"
2801 uspp_filter_deps="gpl avcodec"
2802 zmq_filter_deps="libzmq"
2803 zoompan_filter_deps="swscale"
2804
2805 # examples
2806 avio_reading="avformat avcodec avutil"
2807 avio_dir_cmd="avformat avutil"
2808 avcodec_example_deps="avcodec avutil"
2809 decoding_encoding_example_deps="avcodec avformat avutil"
2810 demuxing_decoding_example_deps="avcodec avformat avutil"
2811 extract_mvs_example_deps="avcodec avformat avutil"
2812 filter_audio_example_deps="avfilter avutil"
2813 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2814 filtering_video_example_deps="avfilter avcodec avformat avutil"
2815 metadata_example_deps="avformat avutil"
2816 muxing_example_deps="avcodec avformat avutil swscale"
2817 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2818 remuxing_example_deps="avcodec avformat avutil"
2819 resampling_audio_example_deps="avutil swresample"
2820 scaling_video_example_deps="avutil swscale"
2821 transcode_aac_example_deps="avcodec avformat swresample"
2822 transcoding_example_deps="avfilter avcodec avformat avutil"
2823
2824 # libraries, in linking order
2825 avcodec_deps="avutil"
2826 avdevice_deps="avformat avcodec avutil"
2827 avfilter_deps="avutil"
2828 avformat_deps="avcodec avutil"
2829 avresample_deps="avutil"
2830 postproc_deps="avutil gpl"
2831 swresample_deps="avutil"
2832 swscale_deps="avutil"
2833
2834 # programs
2835 ffmpeg_deps="avcodec avfilter avformat swresample"
2836 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2837                null_filter
2838                setpts_filter trim_filter"
2839 ffplay_deps="avcodec avformat swscale swresample sdl"
2840 ffplay_libs='$sdl_libs'
2841 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2842 ffprobe_deps="avcodec avformat"
2843 ffserver_deps="avformat fork sarestart"
2844 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2845
2846 # documentation
2847 podpages_deps="perl"
2848 manpages_deps="perl pod2man"
2849 htmlpages_deps="perl"
2850 htmlpages_deps_any="makeinfo_html texi2html"
2851 txtpages_deps="perl makeinfo"
2852 doc_deps_any="manpages htmlpages podpages txtpages"
2853
2854 # default parameters
2855
2856 logfile="config.log"
2857
2858 # installation paths
2859 prefix_default="/usr/local"
2860 bindir_default='${prefix}/bin'
2861 datadir_default='${prefix}/share/ffmpeg'
2862 docdir_default='${prefix}/share/doc/ffmpeg'
2863 incdir_default='${prefix}/include'
2864 libdir_default='${prefix}/lib'
2865 mandir_default='${prefix}/share/man'
2866
2867 # toolchain
2868 ar_default="ar"
2869 cc_default="gcc"
2870 cxx_default="g++"
2871 host_cc_default="gcc"
2872 cp_f="cp -f"
2873 doxygen_default="doxygen"
2874 install="install"
2875 ln_s="ln -s -f"
2876 nm_default="nm -g"
2877 objformat="elf"
2878 pkg_config_default=pkg-config
2879 ranlib_default="ranlib"
2880 strip_default="strip"
2881 yasmexe_default="yasm"
2882 windres_default="windres"
2883
2884 # OS
2885 target_os_default=$(tolower $(uname -s))
2886 host_os=$target_os_default
2887
2888 # machine
2889 if test "$target_os_default" = aix; then
2890     arch_default=$(uname -p)
2891     strip_default="strip -X32_64"
2892 else
2893     arch_default=$(uname -m)
2894 fi
2895 cpu="generic"
2896 intrinsics="none"
2897
2898 # configurable options
2899 enable $PROGRAM_LIST
2900 enable $DOCUMENT_LIST
2901 enable $EXAMPLE_LIST
2902 enable $(filter_out avresample $LIBRARY_LIST)
2903 enable stripping
2904
2905 enable asm
2906 enable debug
2907 enable doc
2908 enable faan faandct faanidct
2909 enable optimizations
2910 enable runtime_cpudetect
2911 enable safe_bitstream_reader
2912 enable static
2913 enable swscale_alpha
2914 enable valgrind_backtrace
2915
2916 sws_max_filter_size_default=256
2917 set_default sws_max_filter_size
2918
2919 # Enable hwaccels by default.
2920 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
2921 enable xlib
2922
2923 # build settings
2924 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2925 LIBPREF="lib"
2926 LIBSUF=".a"
2927 FULLNAME='$(NAME)$(BUILDSUF)'
2928 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2929 SLIBPREF="lib"
2930 SLIBSUF=".so"
2931 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2932 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2933 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2934 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2935 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2936 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2937
2938 asflags_filter=echo
2939 cflags_filter=echo
2940 ldflags_filter=echo
2941
2942 AS_C='-c'
2943 AS_O='-o $@'
2944 CC_C='-c'
2945 CC_E='-E -o $@'
2946 CC_O='-o $@'
2947 CXX_C='-c'
2948 CXX_O='-o $@'
2949 LD_O='-o $@'
2950 LD_LIB='-l%'
2951 LD_PATH='-L'
2952 HOSTCC_C='-c'
2953 HOSTCC_E='-E -o $@'
2954 HOSTCC_O='-o $@'
2955 HOSTLD_O='-o $@'
2956
2957 host_libs='-lm'
2958 host_cflags_filter=echo
2959 host_ldflags_filter=echo
2960
2961 target_path='$(CURDIR)'
2962
2963 # since the object filename is not given with the -MM flag, the compiler
2964 # is only able to print the basename, and we must add the path ourselves
2965 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2966 DEPFLAGS='-MM'
2967
2968 # find source path
2969 if test -f configure; then
2970     source_path=.
2971 else
2972     source_path=$(cd $(dirname "$0"); pwd)
2973     echo "$source_path" | grep -q '[[:blank:]]' &&
2974         die "Out of tree builds are impossible with whitespace in source path."
2975     test -e "$source_path/config.h" &&
2976         die "Out of tree builds are impossible with config.h in source dir."
2977 fi
2978
2979 for v in "$@"; do
2980     r=${v#*=}
2981     l=${v%"$r"}
2982     r=$(sh_quote "$r")
2983     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2984 done
2985
2986 find_things(){
2987     thing=$1
2988     pattern=$2
2989     file=$source_path/$3
2990     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2991 }
2992
2993 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2994 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2995 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2996 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2997 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2998 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2999 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3000 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3001 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3002 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3003 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3004
3005 ALL_COMPONENTS="
3006     $BSF_LIST
3007     $DECODER_LIST
3008     $DEMUXER_LIST
3009     $ENCODER_LIST
3010     $FILTER_LIST
3011     $HWACCEL_LIST
3012     $INDEV_LIST
3013     $MUXER_LIST
3014     $OUTDEV_LIST
3015     $PARSER_LIST
3016     $PROTOCOL_LIST
3017 "
3018
3019 for n in $COMPONENT_LIST; do
3020     v=$(toupper ${n%s})_LIST
3021     eval enable \$$v
3022     eval ${n}_if_any="\$$v"
3023 done
3024
3025 enable $ARCH_EXT_LIST
3026
3027 die_unknown(){
3028     echo "Unknown option \"$1\"."
3029     echo "See $0 --help for available options."
3030     exit 1
3031 }
3032
3033 print_3_columns() {
3034     cat | tr ' ' '\n' | sort | pr -r -3 -t
3035 }
3036
3037 show_list() {
3038     suffix=_$1
3039     shift
3040     echo $* | sed s/$suffix//g | print_3_columns
3041     exit 0
3042 }
3043
3044 rand_list(){
3045     IFS=', '
3046     set -- $*
3047     unset IFS
3048     for thing; do
3049         comp=${thing%:*}
3050         prob=${thing#$comp}
3051         prob=${prob#:}
3052         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3053         echo "prob ${prob:-0.5}"
3054         printf '%s\n' $comp
3055     done
3056 }
3057
3058 do_random(){
3059     action=$1
3060     shift
3061     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3062     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3063 }
3064
3065 for opt do
3066     optval="${opt#*=}"
3067     case "$opt" in
3068         --extra-ldflags=*)
3069             add_ldflags $optval
3070         ;;
3071         --extra-ldexeflags=*)
3072             add_ldexeflags $optval
3073         ;;
3074         --extra-ldlibflags=*)
3075             add_ldlibflags $optval
3076         ;;
3077         --extra-libs=*)
3078             add_extralibs $optval
3079         ;;
3080         --disable-devices)
3081             disable $INDEV_LIST $OUTDEV_LIST
3082         ;;
3083         --enable-debug=*)
3084             debuglevel="$optval"
3085         ;;
3086         --disable-programs)
3087             disable $PROGRAM_LIST
3088         ;;
3089         --disable-everything)
3090             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3091         ;;
3092         --disable-all)
3093             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3094             disable $LIBRARY_LIST $PROGRAM_LIST doc
3095         ;;
3096         --enable-random|--disable-random)
3097             action=${opt%%-random}
3098             do_random ${action#--} $COMPONENT_LIST
3099         ;;
3100         --enable-random=*|--disable-random=*)
3101             action=${opt%%-random=*}
3102             do_random ${action#--} $optval
3103         ;;
3104         --enable-*=*|--disable-*=*)
3105             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3106             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3107             eval list=\$$(toupper $thing)_LIST
3108             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3109             list=$(filter "$name" $list)
3110             [ "$list" = "" ] && warn "Option $opt did not match anything"
3111             $action $list
3112         ;;
3113         --enable-?*|--disable-?*)
3114             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3115             if is_in $option $COMPONENT_LIST; then
3116                 test $action = disable && action=unset
3117                 eval $action \$$(toupper ${option%s})_LIST
3118             elif is_in $option $CMDLINE_SELECT; then
3119                 $action $option
3120             else
3121                 die_unknown $opt
3122             fi
3123         ;;
3124         --list-*)
3125             NAME="${opt#--list-}"
3126             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3127             NAME=${NAME%s}
3128             eval show_list $NAME \$$(toupper $NAME)_LIST
3129         ;;
3130         --help|-h) show_help
3131         ;;
3132         --fatal-warnings) enable fatal_warnings
3133         ;;
3134         *)
3135             optname="${opt%%=*}"
3136             optname="${optname#--}"
3137             optname=$(echo "$optname" | sed 's/-/_/g')
3138             if is_in $optname $CMDLINE_SET; then
3139                 eval $optname='$optval'
3140             elif is_in $optname $CMDLINE_APPEND; then
3141                 append $optname "$optval"
3142             else
3143                 die_unknown $opt
3144             fi
3145         ;;
3146     esac
3147 done
3148
3149 for e in $env; do
3150     eval "export $e"
3151 done
3152
3153 disabled logging && logfile=/dev/null
3154
3155 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3156 set >> $logfile
3157
3158 test -n "$valgrind" && toolchain="valgrind-memcheck"
3159
3160 case "$toolchain" in
3161     clang-asan)
3162         cc_default="clang"
3163         add_cflags  -fsanitize=address
3164         add_ldflags -fsanitize=address
3165     ;;
3166     clang-tsan)
3167         cc_default="clang"
3168         add_cflags  -fsanitize=thread -pie
3169         add_ldflags -fsanitize=thread -pie
3170     ;;
3171     clang-usan)
3172         cc_default="clang"
3173         add_cflags  -fsanitize=undefined
3174         add_ldflags -fsanitize=undefined
3175     ;;
3176     gcc-asan)
3177         cc_default="gcc"
3178         add_cflags  -fsanitize=address
3179         add_ldflags -fsanitize=address
3180     ;;
3181     gcc-tsan)
3182         cc_default="gcc"
3183         add_cflags  -fsanitize=thread -pie -fPIC
3184         add_ldflags -fsanitize=thread -pie -fPIC
3185     ;;
3186     gcc-usan)
3187         cc_default="gcc"
3188         add_cflags  -fsanitize=undefined
3189         add_ldflags -fsanitize=undefined
3190     ;;
3191     valgrind-massif)
3192         target_exec_default=${valgrind:-"valgrind"}
3193         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"
3194     ;;
3195     valgrind-memcheck)
3196         target_exec_default=${valgrind:-"valgrind"}
3197         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3198     ;;
3199     msvc)
3200         # Check whether the current MSVC version needs the C99 converter.
3201         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3202         # support enough of C99 to build ffmpeg. Default to the new
3203         # behaviour if the regexp was unable to match anything, since this
3204         # successfully parses the version number of existing supported
3205         # versions that require the converter (MSVC 2010 and 2012).
3206         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3207         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3208             cc_default="cl"
3209         else
3210             cc_default="c99wrap cl"
3211         fi
3212         ld_default="$source_path/compat/windows/mslink"
3213         nm_default="dumpbin -symbols"
3214         ar_default="lib"
3215         case "$arch" in
3216         arm*)
3217             as_default="armasm"
3218             ;;
3219         esac
3220         target_os_default="win32"
3221         # Use a relative path for TMPDIR. This makes sure all the
3222         # ffconf temp files are written with a relative path, avoiding
3223         # issues with msys/win32 path conversion for MSVC parameters
3224         # such as -Fo<file> or -out:<file>.
3225         TMPDIR=.
3226     ;;
3227     icl)
3228         cc_default="icl"
3229         ld_default="xilink"
3230         nm_default="dumpbin -symbols"
3231         ar_default="xilib"
3232         target_os_default="win32"
3233         TMPDIR=.
3234     ;;
3235     gcov)
3236         add_cflags  -fprofile-arcs -ftest-coverage
3237         add_ldflags -fprofile-arcs -ftest-coverage
3238     ;;
3239     hardened)
3240         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3241         add_cflags   -fno-strict-overflow -fstack-protector-all
3242         add_ldflags  -Wl,-z,relro -Wl,-z,now
3243     ;;
3244     ?*)
3245         die "Unknown toolchain $toolchain"
3246     ;;
3247 esac
3248
3249 test -n "$cross_prefix" && enable cross_compile
3250
3251 if enabled cross_compile; then
3252     test -n "$arch" && test -n "$target_os" ||
3253         die "Must specify target arch and OS when cross-compiling"
3254 fi
3255
3256 ar_default="${cross_prefix}${ar_default}"
3257 cc_default="${cross_prefix}${cc_default}"
3258 cxx_default="${cross_prefix}${cxx_default}"
3259 nm_default="${cross_prefix}${nm_default}"
3260 pkg_config_default="${cross_prefix}${pkg_config_default}"
3261 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3262     ranlib_default="${cross_prefix}${ranlib_default} -D"
3263 else
3264     ranlib_default="${cross_prefix}${ranlib_default}"
3265 fi
3266 strip_default="${cross_prefix}${strip_default}"
3267 windres_default="${cross_prefix}${windres_default}"
3268
3269 sysinclude_default="${sysroot}/usr/include"
3270
3271 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3272     target_exec target_os yasmexe
3273 enabled cross_compile || host_cc_default=$cc
3274 set_default host_cc
3275
3276 pkg_config_fail_message=""
3277 if ! $pkg_config --version >/dev/null 2>&1; then
3278     warn "$pkg_config not found, library detection may fail."
3279     pkg_config=false
3280 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3281     pkg_config_fail_message="
3282 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3283 fi
3284
3285 if test $doxygen != $doxygen_default && \
3286   ! $doxygen --version >/dev/null 2>&1; then
3287     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3288 fi
3289
3290 exesuf() {
3291     case $1 in
3292         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3293     esac
3294 }
3295
3296 EXESUF=$(exesuf $target_os)
3297 HOSTEXESUF=$(exesuf $host_os)
3298
3299 # set temporary file name
3300 : ${TMPDIR:=$TEMPDIR}
3301 : ${TMPDIR:=$TMP}
3302 : ${TMPDIR:=/tmp}
3303
3304 if [ -n "$tempprefix" ] ; then
3305     mktemp(){
3306         echo $tempprefix.${HOSTNAME}.${UID}
3307     }
3308 elif ! check_cmd mktemp -u XXXXXX; then
3309     # simple replacement for missing mktemp
3310     # NOT SAFE FOR GENERAL USE
3311     mktemp(){
3312         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3313     }
3314 fi
3315
3316 tmpfile(){
3317     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3318         (set -C; exec > $tmp) 2>/dev/null ||
3319         die "Unable to create temporary file in $TMPDIR."
3320     append TMPFILES $tmp
3321     eval $1=$tmp
3322 }
3323
3324 trap 'rm -f -- $TMPFILES' EXIT
3325
3326 tmpfile TMPASM .asm
3327 tmpfile TMPC   .c
3328 tmpfile TMPCPP .cpp
3329 tmpfile TMPE   $EXESUF
3330 tmpfile TMPH   .h
3331 tmpfile TMPM   .m
3332 tmpfile TMPO   .o
3333 tmpfile TMPS   .S
3334 tmpfile TMPSH  .sh
3335 tmpfile TMPV   .ver
3336
3337 unset -f mktemp
3338
3339 chmod +x $TMPE
3340
3341 # make sure we can execute files in $TMPDIR
3342 cat > $TMPSH 2>> $logfile <<EOF
3343 #! /bin/sh
3344 EOF
3345 chmod +x $TMPSH >> $logfile 2>&1
3346 if ! $TMPSH >> $logfile 2>&1; then
3347     cat <<EOF
3348 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3349 variable to another directory and make sure that it is not mounted noexec.
3350 EOF
3351     die "Sanity test failed."
3352 fi
3353
3354 armasm_flags(){
3355     for flag; do
3356         case $flag in
3357             # Filter out MSVC cl.exe options from cflags that shouldn't
3358             # be passed to gas-preprocessor
3359             -M[TD]*)                                            ;;
3360             *)                  echo $flag                      ;;
3361         esac
3362    done
3363 }
3364
3365 ccc_flags(){
3366     for flag; do
3367         case $flag in
3368             -std=c99)           echo -c99                       ;;
3369             -mcpu=*)            echo -arch ${flag#*=}           ;;
3370             -mieee)             echo -ieee                      ;;
3371             -O*|-fast)          echo $flag                      ;;
3372             -fno-math-errno)    echo -assume nomath_errno       ;;
3373             -g)                 echo -g3                        ;;
3374             -Wall)              echo -msg_enable level2         ;;
3375             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3376             -Wl,*)              echo $flag                      ;;
3377             -f*|-W*)                                            ;;
3378             *)                  echo $flag                      ;;
3379         esac
3380    done
3381 }
3382
3383 cparser_flags(){
3384     for flag; do
3385         case $flag in
3386             -Wno-switch)             echo -Wno-switch-enum ;;
3387             -Wno-format-zero-length) ;;
3388             -Wdisabled-optimization) ;;
3389             -Wno-pointer-sign)       echo -Wno-other ;;
3390             *)                       echo $flag ;;
3391         esac
3392     done
3393 }
3394
3395 msvc_common_flags(){
3396     for flag; do
3397         case $flag in
3398             # In addition to specifying certain flags under the compiler
3399             # specific filters, they must be specified here as well or else the
3400             # generic catch all at the bottom will print the original flag.
3401             -Wall)                ;;
3402             -std=c99)             ;;
3403             # Common flags
3404             -fomit-frame-pointer) ;;
3405             -g)                   echo -Z7 ;;
3406             -fno-math-errno)      ;;
3407             -fno-common)          ;;
3408             -fno-signed-zeros)    ;;
3409             -fPIC)                ;;
3410             -mthumb)              ;;
3411             -march=*)             ;;
3412             -lz)                  echo zlib.lib ;;
3413             -lavifil32)           echo vfw32.lib ;;
3414             -lavicap32)           echo vfw32.lib user32.lib ;;
3415             -l*)                  echo ${flag#-l}.lib ;;
3416             -LARGEADDRESSAWARE)   echo $flag ;;
3417             -L*)                  echo -libpath:${flag#-L} ;;
3418             *)                    echo $flag ;;
3419         esac
3420     done
3421 }
3422
3423 msvc_flags(){
3424     msvc_common_flags "$@"
3425     for flag; do
3426         case $flag in
3427             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3428                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3429                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3430                                        -wd4307 \
3431                                        -wd4273 -wd4554 -wd4701 ;;
3432         esac
3433     done
3434 }
3435
3436 icl_flags(){
3437     msvc_common_flags "$@"
3438     for flag; do
3439         case $flag in
3440             # Despite what Intel's documentation says -Wall, which is supported
3441             # on Windows, does enable remarks so disable them here.
3442             -Wall)                echo $flag -Qdiag-disable:remark ;;
3443             -std=c99)             echo -Qstd=c99 ;;
3444             -flto)                echo -ipo ;;
3445         esac
3446     done
3447 }
3448
3449 icc_flags(){
3450     for flag; do
3451         case $flag in
3452             -flto)                echo -ipo ;;
3453             *)                    echo $flag ;;
3454         esac
3455     done
3456 }
3457
3458 pgi_flags(){
3459     for flag; do
3460         case $flag in
3461             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3462             -fomit-frame-pointer) echo -Mnoframe ;;
3463             -g)                   echo -gopt ;;
3464             *)                    echo $flag ;;
3465         esac
3466     done
3467 }
3468
3469 suncc_flags(){
3470     for flag; do
3471         case $flag in
3472             -march=*|-mcpu=*)
3473                 case "${flag#*=}" in
3474                     native)                   echo -xtarget=native       ;;
3475                     v9|niagara)               echo -xarch=sparc          ;;
3476                     ultrasparc)               echo -xarch=sparcvis       ;;
3477                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3478                     i586|pentium)             echo -xchip=pentium        ;;
3479                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3480                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3481                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3482                     pentium4*)          echo -xtarget=pentium4           ;;
3483                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3484                     *-sse3)             echo -xarch=sse3                 ;;
3485                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3486                     bonnell)                   echo -xarch=ssse3         ;;
3487                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3488                     westmere)                  echo -xtarget=westmere    ;;
3489                     silvermont)                echo -xarch=sse4_2        ;;
3490                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3491                     core-avx*|ivybridge|haswell|broadwell)
3492                                                echo -xarch=avx           ;;
3493                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3494                     btver1)                    echo -xarch=amdsse4a      ;;
3495                     btver2|bdver*)             echo -xarch=avx           ;;
3496                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3497                     k8|opteron|athlon64|athlon-fx)
3498                                                echo -xarch=sse2a         ;;
3499                     athlon*)                   echo -xarch=pentium_proa  ;;
3500                 esac
3501                 ;;
3502             -std=c99)             echo -xc99              ;;
3503             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3504             -fPIC)                echo -KPIC -xcode=pic32 ;;
3505             -W*,*)                echo $flag              ;;
3506             -f*-*|-W*|-mimpure-text)                      ;;
3507             -shared)              echo -G                 ;;
3508             *)                    echo $flag              ;;
3509         esac
3510     done
3511 }
3512
3513 tms470_flags(){
3514     for flag; do
3515         case $flag in
3516             -march=*|-mcpu=*)
3517                 case "${flag#*=}" in
3518                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3519                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3520                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3521                     armv6*|arm11*)          echo -mv=6   ;;
3522                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3523                                             echo -mv=5e  ;;
3524                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3525                 esac
3526                 ;;
3527             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3528             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3529             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3530             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3531             -msoft-float)   echo --float_support=vfplib       ;;
3532             -O[0-3]|-mf=*)  echo $flag                        ;;
3533             -g)             echo -g -mn                       ;;
3534             -pds=*)         echo $flag                        ;;
3535             -D*|-I*)        echo $flag                        ;;
3536             --gcc|--abi=*)  echo $flag                        ;;
3537             -me)            echo $flag                        ;;
3538         esac
3539     done
3540 }
3541
3542 probe_cc(){
3543     pfx=$1
3544     _cc=$2
3545
3546     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3547     unset _ld_o _ldflags _ld_lib _ld_path
3548     unset _depflags _DEPCMD _DEPFLAGS
3549     _flags_filter=echo
3550
3551     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3552         true # no-op to avoid reading stdin in following checks
3553     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3554         _type=llvm_gcc
3555         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3556         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3557         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3558         _cflags_speed='-O3'
3559         _cflags_size='-Os'
3560     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3561         _type=gcc
3562         gcc_version=$($_cc --version | head -n1)
3563         gcc_basever=$($_cc -dumpversion)
3564         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3565         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3566         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3567         if ! $_cc -dumpversion | grep -q '^2\.'; then
3568             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3569         fi
3570         _cflags_speed='-O3'
3571         _cflags_size='-Os'
3572     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3573         _type=icc
3574         _ident=$($_cc --version | head -n1)
3575         _depflags='-MMD'
3576         _cflags_speed='-O3'
3577         _cflags_size='-Os'
3578         _cflags_noopt='-O1'
3579         _flags_filter=icc_flags
3580     elif $_cc -v 2>&1 | grep -q xlc; then
3581         _type=xlc
3582         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3583         _cflags_speed='-O5'
3584         _cflags_size='-O5 -qcompact'
3585     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3586         _type=ccc
3587         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3588         _DEPFLAGS='-M'
3589         _cflags_speed='-fast'
3590         _cflags_size='-O1'
3591         _flags_filter=ccc_flags
3592     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3593         test -d "$sysroot" || die "No valid sysroot specified."
3594         _type=armcc
3595         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3596         armcc_conf="$PWD/armcc.conf"
3597         $_cc --arm_linux_configure                 \
3598              --arm_linux_config_file="$armcc_conf" \
3599              --configure_sysroot="$sysroot"        \
3600              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3601              die "Error creating armcc configuration file."
3602         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3603         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3604         as_default="${cross_prefix}gcc"
3605         _depflags='-MMD'
3606         _cflags_speed='-O3'
3607         _cflags_size='-Os'
3608     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3609         _type=tms470
3610         _ident=$($_cc -version | head -n1 | tr -s ' ')
3611         _flags='--gcc --abi=eabi -me'
3612         _cc_e='-ppl -fe=$@'
3613         _cc_o='-fe=$@'
3614         _depflags='-ppa -ppd=$(@:.o=.d)'
3615         _cflags_speed='-O3 -mf=5'
3616         _cflags_size='-O3 -mf=2'
3617         _flags_filter=tms470_flags
3618     elif $_cc -v 2>&1 | grep -q clang; then
3619         _type=clang
3620         _ident=$($_cc --version 2>/dev/null | head -n1)
3621         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3622         _cflags_speed='-O3'
3623         _cflags_size='-Os'
3624     elif $_cc -V 2>&1 | grep -q Sun; then
3625         _type=suncc
3626         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3627         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3628         _DEPFLAGS='-xM1 -xc99'
3629         _ldflags='-std=c99'
3630         _cflags_speed='-O5'
3631         _cflags_size='-O5 -xspace'
3632         _flags_filter=suncc_flags
3633     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3634         _type=pathscale
3635         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3636         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3637         _cflags_speed='-O2'
3638         _cflags_size='-Os'
3639         _flags_filter='filter_out -Wdisabled-optimization'
3640     elif $_cc -v 2>&1 | grep -q Open64; then
3641         _type=open64
3642         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3643         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3644         _cflags_speed='-O2'
3645         _cflags_size='-Os'
3646         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3647     elif $_cc -V 2>&1 | grep -q Portland; then
3648         _type=pgi
3649         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3650         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3651         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3652         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3653         _cflags_noopt="-O"
3654         _flags_filter=pgi_flags
3655     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3656         _type=armasm
3657         _ident=$($_cc | head -n1)
3658         # 4509: "This form of conditional instruction is deprecated"
3659         _flags="-nologo -ignore 4509"
3660         _flags_filter=armasm_flags
3661     elif $_cc 2>&1 | grep -q Intel; then
3662         _type=icl
3663         _ident=$($_cc 2>&1 | head -n1)
3664         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3665         # Not only is O3 broken on 13.x+ but it is slower on all previous
3666         # versions (tested) as well.
3667         _cflags_speed="-O2"
3668         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3669         if $_cc 2>&1 | grep -q Linker; then
3670             _ld_o='-out:$@'
3671         else
3672             _ld_o='-Fe$@'
3673         fi
3674         _cc_o='-Fo$@'
3675         _cc_e='-P'
3676         _flags_filter=icl_flags
3677         _ld_lib='lib%.a'
3678         _ld_path='-libpath:'
3679         # -Qdiag-error to make icl error when seeing certain unknown arguments
3680         _flags='-nologo -Qdiag-error:4044,10157'
3681         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3682         # with MSVC which enables it by default.
3683         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3684         disable stripping
3685     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3686         _type=msvc
3687         _ident=$($_cc 2>&1 | head -n1)
3688         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3689         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3690         _cflags_speed="-O2"
3691         _cflags_size="-O1"
3692         if $_cc -nologo- 2>&1 | grep -q Linker; then
3693             _ld_o='-out:$@'
3694         else
3695             _ld_o='-Fe$@'
3696         fi
3697         _cc_o='-Fo$@'
3698         _cc_e='-P -Fi$@'
3699         _flags_filter=msvc_flags
3700         _ld_lib='lib%.a'
3701         _ld_path='-libpath:'
3702         _flags='-nologo'
3703         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS'
3704         disable stripping
3705     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3706         _type=cparser
3707         _ident=$($_cc --version | head -n1)
3708         _depflags='-MMD'
3709         _cflags_speed='-O4'
3710         _cflags_size='-O2'
3711         _flags_filter=cparser_flags
3712     fi
3713
3714     eval ${pfx}_type=\$_type
3715     eval ${pfx}_ident=\$_ident
3716 }
3717
3718 set_ccvars(){
3719     eval ${1}_C=\${_cc_c-\${${1}_C}}
3720     eval ${1}_E=\${_cc_e-\${${1}_E}}
3721     eval ${1}_O=\${_cc_o-\${${1}_O}}
3722
3723     if [ -n "$_depflags" ]; then
3724         eval ${1}_DEPFLAGS=\$_depflags
3725     else
3726         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3727         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3728         eval DEP${1}FLAGS=\$_flags
3729     fi
3730 }
3731
3732 probe_cc cc "$cc"
3733 cflags_filter=$_flags_filter
3734 cflags_speed=$_cflags_speed
3735 cflags_size=$_cflags_size
3736 cflags_noopt=$_cflags_noopt
3737 add_cflags $_flags $_cflags
3738 cc_ldflags=$_ldflags
3739 set_ccvars CC
3740
3741 probe_cc hostcc "$host_cc"
3742 host_cflags_filter=$_flags_filter
3743 add_host_cflags  $_flags $_cflags
3744 set_ccvars HOSTCC
3745
3746 test -n "$cc_type" && enable $cc_type ||
3747     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3748
3749 : ${as_default:=$cc}
3750 : ${dep_cc_default:=$cc}
3751 : ${ld_default:=$cc}
3752 : ${host_ld_default:=$host_cc}
3753 set_default ar as dep_cc ld host_ld windres
3754
3755 probe_cc as "$as"
3756 asflags_filter=$_flags_filter
3757 add_asflags $_flags $_cflags
3758 set_ccvars AS
3759
3760 probe_cc ld "$ld"
3761 ldflags_filter=$_flags_filter
3762 add_ldflags $_flags $_ldflags
3763 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3764 LD_O=${_ld_o-$LD_O}
3765 LD_LIB=${_ld_lib-$LD_LIB}
3766 LD_PATH=${_ld_path-$LD_PATH}
3767
3768 probe_cc hostld "$host_ld"
3769 host_ldflags_filter=$_flags_filter
3770 add_host_ldflags $_flags $_ldflags
3771 HOSTLD_O=${_ld_o-$HOSTLD_O}
3772
3773 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3774     probe_cc depcc "$dep_cc"
3775     CCDEP=${_DEPCMD:-$DEPCMD}
3776     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3777     DEPCCFLAGS=$_flags
3778 fi
3779
3780 if $ar 2>&1 | grep -q Microsoft; then
3781     arflags="-nologo"
3782     ar_o='-out:$@'
3783 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3784     arflags="rq"
3785     ar_o='$@'
3786 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3787     arflags='-Xany -r -c'
3788     ar_o='$@'
3789 elif $ar 2>&1 | grep -q "\[D\] "; then
3790     arflags="rcD"
3791     ar_o='$@'
3792 else
3793     arflags="rc"
3794     ar_o='$@'
3795 fi
3796
3797 add_cflags $extra_cflags
3798 add_cxxflags $extra_cxxflags
3799 add_asflags $extra_cflags
3800
3801 if test -n "$sysroot"; then
3802     case "$cc_type" in
3803         gcc|llvm_gcc|clang)
3804             add_cppflags --sysroot="$sysroot"
3805             add_ldflags --sysroot="$sysroot"
3806 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3807             add_cppflags -isysroot "$sysroot"
3808             add_ldflags -isysroot "$sysroot"
3809         ;;
3810         tms470)
3811             add_cppflags -I"$sysinclude"
3812             add_ldflags  --sysroot="$sysroot"
3813         ;;
3814     esac
3815 fi
3816
3817 if test "$cpu" = host; then
3818     enabled cross_compile &&
3819         die "--cpu=host makes no sense when cross-compiling."
3820
3821     case "$cc_type" in
3822         gcc|llvm_gcc)
3823             check_native(){
3824                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3825                 sed -n "/cc1.*$1=/{
3826                             s/.*$1=\\([^ ]*\\).*/\\1/
3827                             p
3828                             q
3829                         }" $TMPE
3830             }
3831             cpu=$(check_native -march || check_native -mcpu)
3832         ;;
3833     esac
3834
3835     test "${cpu:-host}" = host &&
3836         die "--cpu=host not supported with compiler $cc"
3837 fi
3838
3839 # Deal with common $arch aliases
3840 case "$arch" in
3841     aarch64|arm64)
3842         arch="aarch64"
3843     ;;
3844     arm*|iPad*|iPhone*)
3845         arch="arm"
3846     ;;
3847     mips*|IP*)
3848         arch="mips"
3849     ;;
3850     parisc*|hppa*)
3851         arch="parisc"
3852     ;;
3853     "Power Macintosh"|ppc*|powerpc*)
3854         arch="ppc"
3855     ;;
3856     s390|s390x)
3857         arch="s390"
3858     ;;
3859     sh4|sh)
3860         arch="sh4"
3861     ;;
3862     sun4u|sparc*)
3863         arch="sparc"
3864     ;;
3865     tilegx|tile-gx)
3866         arch="tilegx"
3867     ;;
3868     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3869         arch="x86"
3870     ;;
3871 esac
3872
3873 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3874 enable $arch
3875
3876 # Add processor-specific flags
3877 if enabled aarch64; then
3878
3879     case $cpu in
3880         armv*)
3881             cpuflags="-march=$cpu"
3882         ;;
3883         *)
3884             cpuflags="-mcpu=$cpu"
3885         ;;
3886     esac
3887
3888 elif enabled alpha; then
3889
3890     cpuflags="-mcpu=$cpu"
3891
3892 elif enabled arm; then
3893
3894     check_arm_arch() {
3895         check_cpp_condition stddef.h \
3896             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3897             $cpuflags
3898     }
3899
3900     probe_arm_arch() {
3901         if   check_arm_arch 4;        then echo armv4;
3902         elif check_arm_arch 4T;       then echo armv4t;
3903         elif check_arm_arch 5;        then echo armv5;
3904         elif check_arm_arch 5E;       then echo armv5e;
3905         elif check_arm_arch 5T;       then echo armv5t;
3906         elif check_arm_arch 5TE;      then echo armv5te;
3907         elif check_arm_arch 5TEJ;     then echo armv5te;
3908         elif check_arm_arch 6;        then echo armv6;
3909         elif check_arm_arch 6J;       then echo armv6j;
3910         elif check_arm_arch 6K;       then echo armv6k;
3911         elif check_arm_arch 6Z;       then echo armv6z;
3912         elif check_arm_arch 6ZK;      then echo armv6zk;
3913         elif check_arm_arch 6T2;      then echo armv6t2;
3914         elif check_arm_arch 7;        then echo armv7;
3915         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3916         elif check_arm_arch 7S;       then echo armv7-a;
3917         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3918         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3919         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3920         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3921         fi
3922     }
3923
3924     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3925
3926     case $cpu in
3927         armv*)
3928             cpuflags="-march=$cpu"
3929             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3930         ;;
3931         *)
3932             cpuflags="-mcpu=$cpu"
3933             case $cpu in
3934                 cortex-a*)                               subarch=armv7a  ;;
3935                 cortex-r*)                               subarch=armv7r  ;;
3936                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3937                 arm11*)                                  subarch=armv6   ;;
3938                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3939                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3940                 *)                             subarch=$(probe_arm_arch) ;;
3941             esac
3942         ;;
3943     esac
3944
3945     case "$subarch" in
3946         armv5t*)    enable fast_clz                ;;
3947         armv[6-8]*)
3948             enable fast_clz
3949             disabled fast_unaligned || enable fast_unaligned
3950             ;;
3951     esac
3952
3953 elif enabled avr32; then
3954
3955     case $cpu in
3956         ap7[02]0[0-2])
3957             subarch="avr32_ap"
3958             cpuflags="-mpart=$cpu"
3959         ;;
3960         ap)
3961             subarch="avr32_ap"
3962             cpuflags="-march=$cpu"
3963         ;;
3964         uc3[ab]*)
3965             subarch="avr32_uc"
3966             cpuflags="-mcpu=$cpu"
3967         ;;
3968         uc)
3969             subarch="avr32_uc"
3970             cpuflags="-march=$cpu"
3971         ;;
3972     esac
3973
3974 elif enabled bfin; then
3975
3976     cpuflags="-mcpu=$cpu"
3977
3978 elif enabled mips; then
3979
3980     cpuflags="-march=$cpu"
3981
3982     case $cpu in
3983         24kc)
3984             disable mips32r5
3985             disable mips64r6
3986             disable mipsfpu
3987             disable mipsdspr1
3988             disable mipsdspr2
3989             disable msa
3990         ;;
3991         24kf*)
3992             disable mips32r5
3993             disable mips64r6
3994             disable mipsdspr1
3995             disable mipsdspr2
3996             disable msa
3997         ;;
3998         24kec|34kc|1004kc)
3999             disable mips32r5
4000             disable mips64r6
4001             disable mipsfpu
4002             disable mipsdspr2
4003             disable msa
4004         ;;
4005         24kef*|34kf*|1004kf*)
4006             disable mips32r5
4007             disable mips64r6
4008             disable mipsdspr2
4009             disable msa
4010         ;;
4011         74kc)
4012             disable mips32r5
4013             disable mips64r6
4014             disable mipsfpu
4015             disable msa
4016         ;;
4017         74kf)
4018             disable mips32r5
4019             disable mips64r6
4020             disable msa
4021         ;;
4022         p5600)
4023             disable mips64r6
4024             disable mipsdspr1
4025             disable mipsdspr2
4026
4027             check_cflags "-mtune=p5600"
4028         ;;
4029         i6400)
4030             disable mips32r5
4031             disable mipsdspr1
4032             disable mipsdspr2
4033             disable mipsfpu
4034
4035             check_cflags "-mtune=i6400 -mabi=64"
4036             check_ldflags "-mabi=64"
4037         ;;
4038         loongson*)
4039             disable mipsfpu
4040             disable mips32r2
4041             disable mips32r5
4042             disable mips64r6
4043             disable mipsdspr1
4044             disable mipsdspr2
4045             disable msa
4046             enable local_aligned_8 local_aligned_16 local_aligned_32
4047             enable simd_align_16
4048             enable fast_64bit
4049             enable fast_clz
4050             enable fast_cmov
4051             enable fast_unaligned
4052             disable aligned_stack
4053             case $cpu in
4054                 loongson3*)
4055                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4056                 ;;
4057                 loongson2e)
4058                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4059                 ;;
4060                 loongson2f)
4061                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4062                 ;;
4063             esac
4064         ;;
4065         generic)
4066             disable mips32r5
4067             disable mips64r6
4068             disable msa
4069         ;;
4070     esac
4071
4072 elif enabled ppc; then
4073
4074     disable ldbrx
4075
4076     case $(tolower $cpu) in
4077         601|ppc601|powerpc601)
4078             cpuflags="-mcpu=601"
4079             disable altivec
4080         ;;
4081         603*|ppc603*|powerpc603*)
4082             cpuflags="-mcpu=603"
4083             disable altivec
4084         ;;
4085         604*|ppc604*|powerpc604*)
4086             cpuflags="-mcpu=604"
4087             disable altivec
4088         ;;
4089         g3|75*|ppc75*|powerpc75*)
4090             cpuflags="-mcpu=750"
4091             disable altivec
4092         ;;
4093         g4|745*|ppc745*|powerpc745*)
4094             cpuflags="-mcpu=7450"
4095             disable vsx
4096         ;;
4097         74*|ppc74*|powerpc74*)
4098             cpuflags="-mcpu=7400"
4099             disable vsx
4100         ;;
4101         g5|970|ppc970|powerpc970)
4102             cpuflags="-mcpu=970"
4103             disable vsx
4104         ;;
4105         power[3-6]*)
4106             cpuflags="-mcpu=$cpu"
4107             disable vsx
4108         ;;
4109         power[7-8]*)
4110             cpuflags="-mcpu=$cpu"
4111         ;;
4112         cell)
4113             cpuflags="-mcpu=cell"
4114             enable ldbrx
4115             disable vsx
4116         ;;
4117         e500mc)
4118             cpuflags="-mcpu=e500mc"
4119             disable altivec
4120         ;;
4121         e500v2)
4122             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4123             disable altivec
4124             disable dcbzl
4125         ;;
4126         e500)
4127             cpuflags="-mcpu=8540 -mhard-float"
4128             disable altivec
4129             disable dcbzl
4130         ;;
4131     esac
4132
4133 elif enabled sparc; then
4134
4135     case $cpu in
4136         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4137             cpuflags="-mcpu=$cpu"
4138         ;;
4139         ultrasparc*|niagara[234])
4140             cpuflags="-mcpu=$cpu"
4141         ;;
4142     esac
4143
4144 elif enabled x86; then
4145
4146     case $cpu in
4147         i[345]86|pentium)
4148             cpuflags="-march=$cpu"
4149             disable i686
4150             disable mmx
4151         ;;
4152         # targets that do NOT support nopl and conditional mov (cmov)
4153         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4154             cpuflags="-march=$cpu"
4155             disable i686
4156         ;;
4157         # targets that do support nopl and conditional mov (cmov)
4158         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4159         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4160             cpuflags="-march=$cpu"
4161             enable i686
4162             enable fast_cmov
4163         ;;
4164         # targets that do support conditional mov but on which it's slow
4165         pentium4|pentium4m|prescott|nocona)
4166             cpuflags="-march=$cpu"
4167             enable i686
4168             disable fast_cmov
4169         ;;
4170     esac
4171
4172 fi
4173
4174 if [ "$cpu" != generic ]; then
4175     add_cflags  $cpuflags
4176     add_asflags $cpuflags
4177 fi
4178
4179 # compiler sanity check
4180 check_exec <<EOF
4181 int main(void){ return 0; }
4182 EOF
4183 if test "$?" != 0; then
4184     echo "$cc is unable to create an executable file."
4185     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4186         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4187         echo "Only do this if you know what cross compiling means."
4188     fi
4189     die "C compiler test failed."
4190 fi
4191
4192 add_cppflags -D_ISOC99_SOURCE
4193 add_cxxflags -D__STDC_CONSTANT_MACROS
4194 check_cflags -std=c99
4195 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4196 #include <stdlib.h>
4197 EOF
4198 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4199 #include <stdlib.h>
4200 EOF
4201
4202 add_host_cppflags -D_ISOC99_SOURCE
4203 check_host_cflags -std=c99
4204 check_host_cflags -Wall
4205 check_host_cflags -O3
4206
4207 check_64bit(){
4208     arch32=$1
4209     arch64=$2
4210     expr=$3
4211     check_code cc "" "int test[2*($expr) - 1]" &&
4212         subarch=$arch64 || subarch=$arch32
4213 }
4214
4215 case "$arch" in
4216     aarch64|alpha|ia64)
4217         spic=$shared
4218     ;;
4219     mips)
4220         check_64bit mips mips64 '_MIPS_SIM > 1'
4221         spic=$shared
4222     ;;
4223     parisc)
4224         check_64bit parisc parisc64 'sizeof(void *) > 4'
4225         spic=$shared
4226     ;;
4227     ppc)
4228         check_64bit ppc ppc64 'sizeof(void *) > 4'
4229         spic=$shared
4230     ;;
4231     s390)
4232         check_64bit s390 s390x 'sizeof(void *) > 4'
4233         spic=$shared
4234     ;;
4235     sparc)
4236         check_64bit sparc sparc64 'sizeof(void *) > 4'
4237         spic=$shared
4238     ;;
4239     x86)
4240         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4241         # Treat x32 as x64 for now. Note it also needs spic=$shared
4242         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4243             subarch=x86_64
4244         if test "$subarch" = "x86_64"; then
4245             spic=$shared
4246         fi
4247     ;;
4248     ppc)
4249         check_cc <<EOF && subarch="ppc64"
4250         int test[(int)sizeof(char*) - 7];
4251 EOF
4252     ;;
4253 esac
4254
4255 enable $subarch
4256 enabled spic && enable_weak pic
4257
4258 # OS specific
4259 case $target_os in
4260     aix)
4261         SHFLAGS=-shared
4262         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4263         enabled shared && add_ldflags -Wl,-brtl
4264         ;;
4265     android)
4266         disable symver
4267         enable section_data_rel_ro
4268         SLIB_INSTALL_NAME='$(SLIBNAME)'
4269         SLIB_INSTALL_LINKS=
4270         # soname not set on purpose
4271         SHFLAGS=-shared
4272         ;;
4273     haiku)
4274         prefix_default="/boot/common"
4275         network_extralibs="-lnetwork"
4276         host_libs=
4277         ;;
4278     sunos)
4279         SHFLAGS='-shared -Wl,-h,$$(@F)'
4280         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4281         network_extralibs="-lsocket -lnsl"
4282         add_cppflags -D__EXTENSIONS__
4283         # When using suncc to build, the Solaris linker will mark
4284         # an executable with each instruction set encountered by
4285         # the Solaris assembler.  As our libraries contain their own
4286         # guards for processor-specific code, instead suppress
4287         # generation of the HWCAPS ELF section on Solaris x86 only.
4288         enabled_all suncc x86 &&
4289             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4290             add_ldflags -Wl,-M,mapfile
4291         nm_default='nm -P -g'
4292         ;;
4293     netbsd)
4294         disable symver
4295         oss_indev_extralibs="-lossaudio"
4296         oss_outdev_extralibs="-lossaudio"
4297         enabled gcc || check_ldflags -Wl,-zmuldefs
4298         ;;
4299     openbsd|bitrig)
4300         disable symver
4301         SHFLAGS='-shared'
4302         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4303         SLIB_INSTALL_LINKS=
4304         oss_indev_extralibs="-lossaudio"
4305         oss_outdev_extralibs="-lossaudio"
4306         ;;
4307     dragonfly)
4308         disable symver
4309         ;;
4310     freebsd)
4311         ;;
4312     bsd/os)
4313         add_extralibs -lpoll -lgnugetopt
4314         strip="strip -d"
4315         ;;
4316     darwin)
4317         enabled ppc && add_asflags -force_cpusubtype_ALL
4318         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4319         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4320         strip="${strip} -x"
4321         add_ldflags -Wl,-dynamic,-search_paths_first
4322         SLIBSUF=".dylib"
4323         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4324         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4325         objformat="macho"
4326         enabled x86_64 && objformat="macho64"
4327         enabled_any pic shared x86_64 ||
4328             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4329         ;;
4330     mingw32*)
4331         if test $target_os = "mingw32ce"; then
4332             disable network
4333         else
4334             target_os=mingw32
4335         fi
4336         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4337         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4338         LIBTARGET=i386
4339         if enabled x86_64; then
4340             LIBTARGET="i386:x86-64"
4341         elif enabled arm; then
4342             LIBTARGET=arm-wince
4343         fi
4344         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4345         check_ldflags -Wl,--nxcompat
4346         check_ldflags -Wl,--dynamicbase
4347         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4348         shlibdir_default="$bindir_default"
4349         SLIBPREF=""
4350         SLIBSUF=".dll"
4351         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4352         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4353         dlltool="${cross_prefix}dlltool"
4354         if check_cmd lib.exe -list; then
4355             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4356             if enabled x86_64; then
4357                 LIBTARGET=x64
4358             fi
4359         elif check_cmd $dlltool --version; then
4360             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4361         fi
4362         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4363         SLIB_INSTALL_LINKS=
4364         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4365         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4366         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4367         objformat="win32"
4368         ranlib=:
4369         enable dos_paths
4370         ;;
4371     win32|win64)
4372         disable symver
4373         if enabled shared; then
4374             # Link to the import library instead of the normal static library
4375             # for shared libs.
4376             LD_LIB='%.lib'
4377             # Cannot build both shared and static libs with MSVC or icl.
4378             disable static
4379         fi
4380         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4381         shlibdir_default="$bindir_default"
4382         SLIBPREF=""
4383         SLIBSUF=".dll"
4384         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4385         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4386         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4387         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4388         SLIB_INSTALL_LINKS=
4389         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4390         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4391         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4392         objformat="win32"
4393         ranlib=:
4394         enable dos_paths
4395         ;;
4396     cygwin*)
4397         target_os=cygwin
4398         shlibdir_default="$bindir_default"
4399         SLIBPREF="cyg"
4400         SLIBSUF=".dll"
4401         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4402         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4403         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4404         SLIB_INSTALL_LINKS=
4405         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4406         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4407         objformat="win32"
4408         enable dos_paths
4409         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4410         ;;
4411     *-dos|freedos|opendos)
4412         network_extralibs="-lsocket"
4413         objformat="coff"
4414         enable dos_paths
4415         add_cppflags -U__STRICT_ANSI__
4416         ;;
4417     linux)
4418         enable dv1394
4419         enable section_data_rel_ro
4420         ;;
4421     irix*)
4422         target_os=irix
4423         ranlib="echo ignoring ranlib"
4424         ;;
4425     os/2*)
4426         strip="lxlite -CS"
4427         ln_s="cp -f"
4428         objformat="aout"
4429         add_cppflags -D_GNU_SOURCE
4430         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4431         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4432         LIBSUF="_s.a"
4433         SLIBPREF=""
4434         SLIBSUF=".dll"
4435         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4436         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4437         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4438             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4439             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4440             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4441             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4442         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4443             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4444         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4445         enable dos_paths
4446         enable_weak os2threads
4447         ;;
4448     gnu/kfreebsd)
4449         add_cppflags -D_BSD_SOURCE
4450         ;;
4451     gnu)
4452         ;;
4453     qnx)
4454         add_cppflags -D_QNX_SOURCE
4455         network_extralibs="-lsocket"
4456         ;;
4457     symbian)
4458         SLIBSUF=".dll"
4459         enable dos_paths
4460         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4461         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4462         add_ldflags -Wl,--target1-abs,--no-undefined \
4463                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4464                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4465         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4466                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4467                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4468         ;;
4469     osf1)
4470         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4471         ;;
4472     minix)
4473         ;;
4474     plan9)
4475         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4476                      -D_REENTRANT_SOURCE        \
4477                      -D_RESEARCH_SOURCE         \
4478                      -DFD_SETSIZE=96            \
4479                      -DHAVE_SOCK_OPTS
4480         add_compat strtod.o strtod=avpriv_strtod
4481         network_extralibs='-lbsd'
4482         exeobjs=compat/plan9/main.o
4483         disable ffserver
4484         cp_f='cp'
4485         ;;
4486     none)
4487         ;;
4488     *)
4489         die "Unknown OS '$target_os'."
4490         ;;
4491 esac
4492
4493 # determine libc flavour
4494
4495 probe_libc(){
4496     pfx=$1
4497     pfx_no_=${pfx%_}
4498     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4499     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4500         eval ${pfx}libc_type=uclibc
4501         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4502     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4503         eval ${pfx}libc_type=glibc
4504         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4505     # MinGW headers can be installed on Cygwin, so check for newlib first.
4506     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4507         eval ${pfx}libc_type=newlib
4508         add_${pfx}cppflags -U__STRICT_ANSI__
4509     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4510     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4511         eval ${pfx}libc_type=mingw64
4512         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4513             add_compat msvcrt/snprintf.o
4514             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4515         fi
4516         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4517         eval test \$${pfx_no_}cc_type = "gcc" &&
4518             add_${pfx}cppflags -D__printf__=__gnu_printf__
4519     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4520          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4521         eval ${pfx}libc_type=mingw32
4522         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4523             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4524             die "ERROR: MinGW32 runtime version must be >= 3.15."
4525         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4526         eval test \$${pfx_no_}cc_type = "gcc" &&
4527             add_${pfx}cppflags -D__printf__=__gnu_printf__
4528     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4529         eval ${pfx}libc_type=msvcrt
4530         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4531             if [ "$pfx" = host_ ]; then
4532                 add_host_cppflags -Dsnprintf=_snprintf
4533             else
4534                 add_compat strtod.o strtod=avpriv_strtod
4535                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4536                                              _snprintf=avpriv_snprintf  \
4537                                              vsnprintf=avpriv_vsnprintf
4538             fi
4539         fi
4540         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4541         # 0x601 by default unless something else is set by the user.
4542         # This can easily lead to us detecting functions only present
4543         # in such new versions and producing binaries requiring windows 7.0.
4544         # Therefore explicitly set the default to XP unless the user has
4545         # set something else on the command line.
4546         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4547         # family. For these cases, configure is free to use any functions
4548         # found in the SDK headers by default. (Alternatively, we could force
4549         # _WIN32_WINNT to 0x0602 in that case.)
4550         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4551             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4552 #ifdef WINAPI_FAMILY
4553 #include <winapifamily.h>
4554 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4555 #error not desktop
4556 #endif
4557 #endif
4558 EOF
4559     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4560         eval ${pfx}libc_type=klibc
4561     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4562         eval ${pfx}libc_type=bionic
4563     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4564         eval ${pfx}libc_type=solaris
4565         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4566     fi
4567     check_${pfx}cc <<EOF
4568 #include <time.h>
4569 void *v = localtime_r;
4570 EOF
4571 test "$?" != 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
4572 #include <time.h>
4573 void *v = localtime_r;
4574 EOF
4575
4576 }
4577
4578 probe_libc
4579 test -n "$libc_type" && enable libc_$libc_type
4580 probe_libc host_
4581 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4582
4583 case $libc_type in
4584     bionic)
4585         add_compat strtod.o strtod=avpriv_strtod
4586         ;;
4587 esac
4588
4589 # hacks for compiler/libc/os combinations
4590
4591 if enabled_all tms470 libc_glibc; then
4592     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4593     add_cppflags -D__USER_LABEL_PREFIX__=
4594     add_cppflags -D__builtin_memset=memset
4595     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4596     add_cflags   -pds=48    # incompatible redefinition of macro
4597 fi
4598
4599 if enabled_all ccc libc_glibc; then
4600     add_ldflags -Wl,-z,now  # calls to libots crash without this
4601 fi
4602
4603 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4604     add_cppflags '-I\$(SRC_PATH)/compat/float'
4605
4606 esc(){
4607     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4608 }
4609
4610 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4611
4612 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4613
4614 set_default libdir
4615 : ${shlibdir_default:="$libdir"}
4616 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4617
4618 set_default $PATHS_LIST
4619 set_default nm
4620
4621 # we need to build at least one lib type
4622 if ! enabled_any static shared; then
4623     cat <<EOF
4624 At least one library type must be built.
4625 Specify --enable-static to build the static libraries or --enable-shared to
4626 build the shared libraries as well. To only build the shared libraries specify
4627 --disable-static in addition to --enable-shared.
4628 EOF
4629     exit 1;
4630 fi
4631
4632 die_license_disabled() {
4633     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4634 }
4635
4636 die_license_disabled_gpl() {
4637     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4638 }
4639
4640 die_license_disabled gpl frei0r
4641 die_license_disabled gpl libcdio
4642 die_license_disabled gpl libsmbclient
4643 die_license_disabled gpl libutvideo
4644 die_license_disabled gpl libvidstab
4645 die_license_disabled gpl libx264
4646 die_license_disabled gpl libx265
4647 die_license_disabled gpl libxavs
4648 die_license_disabled gpl libxvid
4649 die_license_disabled gpl libzvbi
4650 die_license_disabled gpl x11grab
4651
4652 die_license_disabled nonfree libaacplus
4653 die_license_disabled nonfree libfaac
4654 die_license_disabled nonfree nvenc
4655 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4656 enabled gpl && die_license_disabled_gpl nonfree openssl
4657
4658 die_license_disabled version3 libopencore_amrnb
4659 die_license_disabled version3 libopencore_amrwb
4660 die_license_disabled version3 libsmbclient
4661 die_license_disabled version3 libvo_aacenc
4662 die_license_disabled version3 libvo_amrwbenc
4663
4664 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4665
4666 disabled optimizations || check_cflags -fomit-frame-pointer
4667
4668 enable_weak_pic() {
4669     disabled pic && return
4670     enable pic
4671     add_cppflags -DPIC
4672     case "$target_os" in
4673     mingw*|cygwin*)
4674         ;;
4675     *)
4676         add_cflags -fPIC
4677         ;;
4678     esac
4679     add_asflags  -fPIC
4680 }
4681
4682 enabled pic && enable_weak_pic
4683
4684 check_cc <<EOF || die "Symbol mangling check failed."
4685 int ff_extern;
4686 EOF
4687 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4688 extern_prefix=${sym%%ff_extern*}
4689
4690 check_cc <<EOF && enable_weak inline_asm
4691 void foo(void) { __asm__ volatile ("" ::); }
4692 EOF
4693
4694 _restrict=
4695 for restrict_keyword in restrict __restrict__ __restrict; do
4696     check_cc <<EOF && _restrict=$restrict_keyword && break
4697 void foo(char * $restrict_keyword p);
4698 EOF
4699 done
4700
4701 check_cc <<EOF && enable pragma_deprecated
4702 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4703 EOF
4704
4705 check_cc <<EOF && enable attribute_packed
4706 struct { int x; } __attribute__((packed)) x;
4707 EOF
4708
4709 check_cc <<EOF && enable attribute_may_alias
4710 union { int x; } __attribute__((may_alias)) x;
4711 EOF
4712
4713 check_cc <<EOF || die "endian test failed"
4714 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4715 EOF
4716 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4717
4718 if ! enabled ppc64 || enabled bigendian; then
4719     disable vsx
4720 fi
4721
4722 check_gas() {
4723     log "check_gas using '$as' as AS"
4724     # :vararg is used on aarch64, arm and ppc altivec
4725     check_as <<EOF || return 1
4726 .macro m n, y:vararg=0
4727 \n: .int \y
4728 .endm
4729 m x
4730 EOF
4731     # .altmacro is only used in arm asm
4732     ! enabled arm || check_as <<EOF || return 1
4733 .altmacro
4734 EOF
4735     enable gnu_as
4736     return 0
4737 }
4738
4739 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4740     nogas=:
4741     enabled_any arm aarch64 && nogas=die
4742     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4743     as_noop=-v
4744
4745     case $as_type in
4746         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4747         gcc)  gaspp_as_type=gas ;;
4748         *)    gaspp_as_type=$as_type ;;
4749     esac
4750
4751     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4752
4753     test "${as#*gas-preprocessor.pl}" != "$as" ||
4754     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4755         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4756
4757     if ! check_gas ; then
4758         as=${gas:=$as}
4759         check_gas || \
4760             $nogas "GNU assembler not found, install/update gas-preprocessor"
4761     fi
4762
4763     check_as <<EOF && enable as_func
4764 .func test
4765 .endfunc
4766 EOF
4767 fi
4768
4769 check_inline_asm inline_asm_labels '"1:\n"'
4770
4771 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4772
4773 if enabled aarch64; then
4774     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4775     # internal assembler in clang 3.3 does not support this instruction
4776     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4777     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4778
4779     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4780
4781 elif enabled alpha; then
4782
4783     check_cflags -mieee
4784
4785 elif enabled arm; then
4786
4787     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4788
4789     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4790 float func(float a, float b){ return a+b; }
4791 EOF
4792
4793     enabled thumb && check_cflags -mthumb || check_cflags -marm
4794
4795     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4796         enable vfp_args
4797     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4798         enable vfp_args
4799     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4800         case "${cross_prefix:-$cc}" in
4801             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4802             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4803 __asm__ (".eabi_attribute 28, 1");
4804 int main(void) { return 0; }
4805 EOF
4806         esac
4807         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4808     fi
4809
4810     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4811     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4812     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4813     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4814     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4815     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4816     enabled setend  && check_insn setend  'setend be'
4817
4818     [ $target_os = linux ] || [ $target_os = android ] ||
4819         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4820             $ARCH_EXT_LIST_ARM
4821
4822     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4823
4824     check_as <<EOF && enable as_dn_directive
4825 ra .dn d0.i16
4826 .unreq ra
4827 EOF
4828
4829     # llvm's integrated assembler supports .object_arch from llvm 3.5
4830     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4831 .object_arch armv4
4832 EOF
4833
4834     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4835
4836 elif enabled mips; then
4837
4838     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
4839     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4840     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
4841
4842     # Enable minimum ISA based on selected options
4843     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4844         add_cflags "-mips64r2"
4845         add_asflags "-mips64r2"
4846     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
4847         add_cflags "-mips64"
4848         add_asflags "-mips64"
4849     elif enabled mipsdspr1 || enabled mipsdspr2; then
4850         add_cflags "-mips32r2 -mfp32"
4851         add_asflags "-mips32r2 -mfp32"
4852     elif enabled mips32r5 || enabled mips64r6; then
4853         check_cflags "-mfp64"
4854         check_ldflags "-mfp64"
4855     fi
4856
4857     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4858      check_ldflags "-mips32r5" &&
4859      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4860     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4861      check_ldflags "-mips64r6" &&
4862      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4863     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4864      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4865     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4866      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4867     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4868      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4869     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4870      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4871
4872     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4873     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4874     enabled msa && add_asflags "-mmsa"
4875
4876 elif enabled parisc; then
4877
4878     if enabled gcc; then
4879         case $($cc -dumpversion) in
4880             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4881         esac
4882     fi
4883
4884 elif enabled ppc; then
4885
4886     enable local_aligned_8 local_aligned_16 local_aligned_32
4887
4888     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4889     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4890     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4891     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4892
4893     # AltiVec flags: The FSF version of GCC differs from the Apple version
4894     if enabled altivec; then
4895         check_cflags -maltivec -mabi=altivec &&
4896         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4897         check_cflags -faltivec
4898
4899         # check if our compiler supports Motorola AltiVec C API
4900         check_cc <<EOF || disable altivec
4901 $inc_altivec_h
4902 int main(void) {
4903     vector signed int v1 = (vector signed int) { 0 };
4904     vector signed int v2 = (vector signed int) { 1 };
4905     v1 = vec_add(v1, v2);
4906     return 0;
4907 }
4908 EOF
4909
4910         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4911     fi
4912
4913     if enabled vsx; then
4914         check_cflags -mvsx &&
4915         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4916     fi
4917
4918     if enabled power8; then
4919         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4920     fi
4921
4922 elif enabled x86; then
4923
4924     check_builtin rdtsc    intrin.h   "__rdtsc()"
4925     check_builtin mm_empty mmintrin.h "_mm_empty()"
4926
4927     enable local_aligned_8 local_aligned_16 local_aligned_32
4928
4929     # check whether EBP is available on x86
4930     # As 'i' is stored on the stack, this program will crash
4931     # if the base pointer is used to access it because the
4932     # base pointer is cleared in the inline assembly code.
4933     check_exec_crash <<EOF && enable ebp_available
4934 volatile int i=0;
4935 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4936 return i;
4937 EOF
4938
4939     # check whether EBX is available on x86
4940     check_inline_asm ebx_available '""::"b"(0)' &&
4941         check_inline_asm ebx_available '"":::"%ebx"'
4942
4943     # check whether xmm clobbers are supported
4944     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4945
4946     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4947         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4948
4949     # check whether binutils is new enough to compile SSSE3/MMXEXT
4950     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4951     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4952
4953     if ! disabled_any asm mmx yasm; then
4954         if check_cmd $yasmexe --version; then
4955             enabled x86_64 && yasm_extra="-m amd64"
4956             yasm_debug="-g dwarf2"
4957         elif check_cmd nasm -v; then
4958             yasmexe=nasm
4959             yasm_debug="-g -F dwarf"
4960             if enabled x86_64; then
4961                 case "$objformat" in
4962                     elf)   objformat=elf64 ;;
4963                     win32) objformat=win64 ;;
4964                 esac
4965             fi
4966         fi
4967
4968         YASMFLAGS="-f $objformat $yasm_extra"
4969         enabled pic               && append YASMFLAGS "-DPIC"
4970         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4971         case "$objformat" in
4972             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4973         esac
4974
4975         check_yasm "movbe ecx, [5]" && enable yasm ||
4976             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4977         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4978         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4979         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4980         check_yasm "CPU amdnop" || disable cpunop
4981     fi
4982
4983     case "$cpu" in
4984         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4985             disable fast_clz
4986         ;;
4987     esac
4988
4989 fi
4990
4991 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4992
4993 check_ldflags -Wl,--as-needed
4994 check_ldflags -Wl,-z,noexecstack
4995
4996 if check_func dlopen; then
4997     ldl=
4998 elif check_func dlopen -ldl; then
4999     ldl=-ldl
5000 fi
5001
5002 frei0r_filter_extralibs='$ldl'
5003 frei0r_src_filter_extralibs='$ldl'
5004 ladspa_filter_extralibs='$ldl'
5005 nvenc_encoder_extralibs='$ldl'
5006
5007 if ! disabled network; then
5008     check_func getaddrinfo $network_extralibs
5009     check_func getservbyport $network_extralibs
5010     check_func inet_aton $network_extralibs
5011
5012     check_type netdb.h "struct addrinfo"
5013     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5014     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5015     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5016     check_type poll.h "struct pollfd"
5017     check_type netinet/sctp.h "struct sctp_event_subscribe"
5018     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5019     check_type netinet/in.h "struct sockaddr_in6"
5020     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5021     check_type "sys/types.h sys/socket.h" socklen_t
5022
5023     # Prefer arpa/inet.h over winsock2
5024     if check_header arpa/inet.h ; then
5025         check_func closesocket
5026     elif check_header winsock2.h ; then
5027         check_func_headers winsock2.h closesocket -lws2 &&
5028             network_extralibs="-lws2" ||
5029         { check_func_headers winsock2.h closesocket -lws2_32 &&
5030             network_extralibs="-lws2_32"; } || disable winsock2_h network
5031         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5032
5033         check_type ws2tcpip.h socklen_t
5034         check_type ws2tcpip.h "struct addrinfo"
5035         check_type ws2tcpip.h "struct group_source_req"
5036         check_type ws2tcpip.h "struct ip_mreq_source"
5037         check_type ws2tcpip.h "struct ipv6_mreq"
5038         check_type winsock2.h "struct pollfd"
5039         check_struct winsock2.h "struct sockaddr" sa_len
5040         check_type ws2tcpip.h "struct sockaddr_in6"
5041         check_type ws2tcpip.h "struct sockaddr_storage"
5042     else
5043         disable network
5044     fi
5045 fi
5046
5047 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5048 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5049 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5050 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5051 check_builtin sarestart signal.h "SA_RESTART"
5052 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5053 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5054 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5055
5056 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5057 check_func  ${malloc_prefix}memalign            && enable memalign
5058 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5059
5060 check_func  access
5061 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5062 check_func  fcntl
5063 check_func  fork
5064 check_func  gethrtime
5065 check_func  getopt
5066 check_func  getrusage
5067 check_func  gettimeofday
5068 check_func  isatty
5069 check_func  mach_absolute_time
5070 check_func  mkstemp
5071 check_func  mmap
5072 check_func  mprotect
5073 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5074 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5075 check_func  sched_getaffinity
5076 check_func  setrlimit
5077 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5078 check_func  strerror_r
5079 check_func  sysconf
5080 check_func  sysctl
5081 check_func  usleep
5082
5083 check_func_headers conio.h kbhit
5084 check_func_headers io.h setmode
5085 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5086 check_func_headers stdlib.h getenv
5087
5088 check_func_headers windows.h CoTaskMemFree -lole32
5089 check_func_headers windows.h GetProcessAffinityMask
5090 check_func_headers windows.h GetProcessTimes
5091 check_func_headers windows.h GetSystemTimeAsFileTime
5092 check_func_headers windows.h MapViewOfFile
5093 check_func_headers windows.h PeekNamedPipe
5094 check_func_headers windows.h SetConsoleTextAttribute
5095 check_func_headers windows.h SetConsoleCtrlHandler
5096 check_func_headers windows.h Sleep
5097 check_func_headers windows.h VirtualAlloc
5098 check_struct windows.h "CONDITION_VARIABLE" Ptr
5099 check_func_headers glob.h glob
5100 enabled xlib &&
5101     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5102
5103 check_header direct.h
5104 check_header dlfcn.h
5105 check_header d3d11.h
5106 check_header dxva.h
5107 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5108 check_header io.h
5109 check_header libcrystalhd/libcrystalhd_if.h
5110 check_header mach/mach_time.h
5111 check_header malloc.h
5112 check_header net/udplite.h
5113 check_header poll.h
5114 check_header sys/mman.h
5115 check_header sys/param.h
5116 check_header sys/resource.h
5117 check_header sys/select.h
5118 check_header sys/time.h
5119 check_header sys/un.h
5120 check_header termios.h
5121 check_header unistd.h
5122 check_header valgrind/valgrind.h
5123 check_header vdpau/vdpau.h
5124 check_header vdpau/vdpau_x11.h
5125 check_header VideoDecodeAcceleration/VDADecoder.h
5126 check_header VideoToolbox/VideoToolbox.h
5127 check_header windows.h
5128 check_header X11/extensions/XvMClib.h
5129 check_header asm/types.h
5130
5131 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5132 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5133 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5134
5135 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5136
5137 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5138 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5139 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5140
5141 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5142
5143 if ! disabled w32threads && ! enabled pthreads; then
5144     check_func_headers "windows.h process.h" _beginthreadex &&
5145         enable w32threads || disable w32threads
5146 fi
5147
5148 # check for some common methods of building with pthread support
5149 # do this before the optional library checks as some of them require pthreads
5150 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5151     enable pthreads
5152     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5153         add_cflags -pthread
5154         add_extralibs -pthread
5155     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5156         add_cflags -pthreads
5157         add_extralibs -pthreads
5158     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5159         add_cflags -ldl -pthread
5160         add_extralibs -ldl -pthread
5161     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5162         add_extralibs -lpthreadGC2
5163     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5164         :
5165     elif ! check_func pthread_join && ! check_func pthread_create; then
5166         disable pthreads
5167     fi
5168     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5169 fi
5170
5171
5172 if enabled pthreads; then
5173   check_func pthread_cancel
5174 fi
5175
5176 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5177 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5178 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5179
5180 check_lib math.h sin -lm && LIBM="-lm"
5181 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5182
5183 atan2f_args=2
5184 copysign_args=2
5185 ldexpf_args=2
5186 powf_args=2
5187
5188 for func in $MATH_FUNCS; do
5189     eval check_mathfunc $func \${${func}_args:-1}
5190 done
5191
5192 # these are off by default, so fail if requested and not available
5193 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5194 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5195                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5196 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5197                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5198                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5199 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5200 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5201 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5202 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5203 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5204 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5205 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5206 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5207 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5208 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5209                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5210                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5211 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5212 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create &&
5213                              check_struct libdcadec/dca_context.h "struct dcadec_exss_info" matrix_encoding
5214 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5215 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5216                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5217                                  warn "using libfdk without pkg-config"; } }
5218 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"
5219 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5220 enabled fontconfig        && enable libfontconfig
5221 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5222 enabled libfreetype       && require_libfreetype
5223 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5224 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5225 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5226                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5227                                done || die "ERROR: libgsm not found"; }
5228 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5229 enabled libkvazaar        && require_pkg_config kvazaar kvazaar.h kvz_api_get
5230 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5231 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5232 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5233 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5234 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5235 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5236 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5237 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5238 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5239                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5240                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5241                                die "ERROR: libopenjpeg not found"; }
5242 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5243 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5244 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5245 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5246 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5247 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5248 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5249                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5250 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5251 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5252 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5253 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5254 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5255     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5256     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5257 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5258 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5259                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5260                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5261 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5262 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5263 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5264 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5265 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5266 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5267
5268 enabled libvpx            && {
5269     enabled libvpx_vp8_decoder && {
5270         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5271             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5272                 die "ERROR: libvpx decoder version must be >=0.9.1";
5273     }
5274     enabled libvpx_vp8_encoder && {
5275         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5276             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5277                 die "ERROR: libvpx encoder version must be >=0.9.7";
5278     }
5279     enabled libvpx_vp9_decoder && {
5280         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5281             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5282                 disable libvpx_vp9_decoder;
5283     }
5284     enabled libvpx_vp9_encoder && {
5285         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5286             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5287                 disable libvpx_vp9_encoder;
5288     }
5289     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5290         die "libvpx enabled but no supported decoders found"
5291     fi
5292 }
5293
5294 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5295 enabled libwebp           && {
5296     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5297     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5298 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5299                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5300                                  warn "using libx264 without pkg-config"; } } &&
5301                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5302                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5303                              { check_cpp_condition x264.h "X264_MPEG2" &&
5304                                enable libx262; }
5305 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5306                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5307                                die "ERROR: libx265 version must be >= 57."; }
5308 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5309 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5310 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5311 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5312 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5313                                 { ! enabled cross_compile && {
5314                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5315                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5316                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5317                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5318                                die "ERROR: mmal not found"; }
5319 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5320                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5321                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5322                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5323 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5324                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5325                                die "ERROR: openal not found"; } &&
5326                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5327                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5328 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5329                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5330                                die "ERROR: opencl not found"; } &&
5331                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5332                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5333                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5334 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5335                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5336                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5337                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5338                                die "ERROR: opengl not found."
5339                              }
5340 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5341                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5342                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5343                                die "ERROR: openssl not found"; }
5344 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5345
5346 if enabled gnutls; then
5347     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
5348     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5349 fi
5350
5351 # libdc1394 check
5352 if enabled libdc1394; then
5353     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5354         enable libdc1394_2; } ||
5355     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5356         enable libdc1394_1; } ||
5357     die "ERROR: No version of libdc1394 found "
5358 fi
5359 if ! disabled sdl; then
5360     SDL_CONFIG="${cross_prefix}sdl-config"
5361     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5362         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5363         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5364         enable sdl
5365     else
5366         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5367             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5368             sdl_libs=$("${SDL_CONFIG}" --libs)
5369             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5370             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5371             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5372             enable sdl
5373         elif enabled sdl ; then
5374             die "ERROR: SDL not found"
5375         else
5376             disable sdl
5377         fi
5378     fi
5379     if test $target_os = "mingw32"; then
5380         sdl_libs="$sdl_libs -mconsole"
5381     fi
5382 fi
5383 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5384
5385 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5386     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5387     enable securetransport; }
5388
5389 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5390 enabled makeinfo \
5391     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5392     && enable makeinfo_html || disable makeinfo_html
5393 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5394 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5395 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5396 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5397
5398 check_header linux/fb.h
5399 check_header linux/videodev.h
5400 check_header linux/videodev2.h
5401 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5402
5403 check_header sys/videoio.h
5404 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5405
5406 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5407 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5408 # w32api 3.12 had it defined wrong
5409 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5410
5411 check_type "dshow.h" IBaseFilter
5412
5413 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5414 { check_header dev/bktr/ioctl_meteor.h &&
5415   check_header dev/bktr/ioctl_bt848.h; } ||
5416 { check_header machine/ioctl_meteor.h &&
5417   check_header machine/ioctl_bt848.h; } ||
5418 { check_header dev/video/meteor/ioctl_meteor.h &&
5419   check_header dev/video/bktr/ioctl_bt848.h; } ||
5420 check_header dev/ic/bt8xx.h
5421
5422 check_header sndio.h
5423 if check_struct sys/soundcard.h audio_buf_info bytes; then
5424     enable_safe sys/soundcard.h
5425 else
5426     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5427     #include <sys/soundcard.h>
5428     audio_buf_info abc;
5429 EOF
5430 fi
5431 check_header soundcard.h
5432
5433 enabled_any alsa_indev alsa_outdev &&
5434     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5435
5436 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5437     check_func jack_port_get_latency_range -ljack
5438
5439 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5440
5441 if enabled libcdio; then
5442     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5443     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5444     die "ERROR: No usable libcdio/cdparanoia found"
5445 fi
5446
5447 enabled xlib &&
5448     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5449
5450 if ! disabled libxcb; then
5451     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5452         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5453     } && disable x11grab && enable libxcb
5454
5455 if enabled libxcb; then
5456     disabled libxcb_shm || {
5457         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5458             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5459         } && check_header sys/shm.h && enable libxcb_shm; }
5460
5461     disabled libxcb_xfixes || {
5462         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5463             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5464         } && enable libxcb_xfixes; }
5465
5466     disabled libxcb_shape || {
5467         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5468             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5469         } && enable libxcb_shape; }
5470
5471     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5472     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5473 fi
5474 fi
5475
5476 if enabled x11grab; then
5477     enabled xlib || die "ERROR: Xlib not found"
5478     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5479     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5480 fi
5481
5482 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5483
5484 enabled dxva2api_h &&
5485     check_cc <<EOF && enable dxva2api_cobj
5486 #define _WIN32_WINNT 0x0600
5487 #define COBJMACROS
5488 #include <windows.h>
5489 #include <d3d9.h>
5490 #include <dxva2api.h>
5491 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5492 EOF
5493
5494 enabled vaapi &&
5495     check_lib va/va.h vaInitialize -lva ||
5496     disable vaapi
5497
5498 enabled vaapi && enabled xlib &&
5499     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5500     enable vaapi_x11
5501
5502 enabled vdpau &&
5503     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5504     disable vdpau
5505
5506 enabled vdpau && enabled xlib &&
5507     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5508     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5509     enable vdpau_x11
5510
5511 # Funny iconv installations are not unusual, so check it after all flags have been set
5512 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5513
5514 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5515
5516 # add some useful compiler flags if supported
5517 check_cflags -Wdeclaration-after-statement
5518 check_cflags -Wall
5519 check_cflags -Wdisabled-optimization
5520 check_cflags -Wpointer-arith
5521 check_cflags -Wredundant-decls
5522 check_cflags -Wwrite-strings
5523 check_cflags -Wtype-limits
5524 check_cflags -Wundef
5525 check_cflags -Wmissing-prototypes
5526 check_cflags -Wno-pointer-to-int-cast
5527 check_cflags -Wstrict-prototypes
5528 check_cflags -Wempty-body
5529 enabled extra_warnings && check_cflags -Winline
5530
5531 check_disable_warning(){
5532     warning_flag=-W${1#-Wno-}
5533     test_cflags $warning_flag && add_cflags $1
5534 }
5535
5536 check_disable_warning -Wno-parentheses
5537 check_disable_warning -Wno-switch
5538 check_disable_warning -Wno-format-zero-length
5539 check_disable_warning -Wno-pointer-sign
5540
5541 # add some linker flags
5542 check_ldflags -Wl,--warn-common
5543 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5544 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5545 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5546 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5547
5548 # add some strip flags
5549 # -wN '..@*' is more selective than -x, but not available everywhere.
5550 check_stripflags -wN \'..@*\' || check_stripflags -x
5551
5552 enabled neon_clobber_test &&
5553     check_ldflags -Wl,--wrap,avcodec_open2              \
5554                   -Wl,--wrap,avcodec_decode_audio4      \
5555                   -Wl,--wrap,avcodec_decode_video2      \
5556                   -Wl,--wrap,avcodec_decode_subtitle2   \
5557                   -Wl,--wrap,avcodec_encode_audio2      \
5558                   -Wl,--wrap,avcodec_encode_video2      \
5559                   -Wl,--wrap,avcodec_encode_subtitle    \
5560                   -Wl,--wrap,swr_convert                \
5561                   -Wl,--wrap,avresample_convert ||
5562     disable neon_clobber_test
5563
5564 enabled xmm_clobber_test &&
5565     check_ldflags -Wl,--wrap,avcodec_open2              \
5566                   -Wl,--wrap,avcodec_decode_audio4      \
5567                   -Wl,--wrap,avcodec_decode_video2      \
5568                   -Wl,--wrap,avcodec_decode_subtitle2   \
5569                   -Wl,--wrap,avcodec_encode_audio2      \
5570                   -Wl,--wrap,avcodec_encode_video       \
5571                   -Wl,--wrap,avcodec_encode_video2      \
5572                   -Wl,--wrap,avcodec_encode_subtitle    \
5573                   -Wl,--wrap,swr_convert                \
5574                   -Wl,--wrap,avresample_convert         \
5575                   -Wl,--wrap,sws_scale ||
5576     disable xmm_clobber_test
5577
5578 echo "X{};" > $TMPV
5579 if test_ldflags -Wl,--version-script,$TMPV; then
5580     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5581     check_cc <<EOF && enable symver_asm_label
5582 void ff_foo(void) __asm__ ("av_foo@VERSION");
5583 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5584 EOF
5585     check_cc <<EOF && enable symver_gnu_asm
5586 __asm__(".symver ff_foo,av_foo@VERSION");
5587 void ff_foo(void) {}
5588 EOF
5589 fi
5590
5591 if [ -z "$optflags" ]; then
5592     if enabled small; then
5593         optflags=$cflags_size
5594     elif enabled optimizations; then
5595         optflags=$cflags_speed
5596     else
5597         optflags=$cflags_noopt
5598     fi
5599 fi
5600
5601 check_optflags(){
5602     check_cflags "$@"
5603     enabled lto && check_ldflags "$@"
5604 }
5605
5606
5607 if enabled lto; then
5608     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5609     check_cflags  -flto
5610     check_ldflags -flto $cpuflags
5611     disable inline_asm_direct_symbol_refs
5612 fi
5613
5614 check_optflags $optflags
5615 check_optflags -fno-math-errno
5616 check_optflags -fno-signed-zeros
5617
5618 enabled ftrapv && check_cflags -ftrapv
5619
5620 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5621 int x;
5622 EOF
5623
5624
5625 if enabled icc; then
5626     # Just warnings, no remarks
5627     check_cflags -w1
5628     # -wd: Disable following warnings
5629     # 144, 167, 556: -Wno-pointer-sign
5630     # 188: enumerated type mixed with another type
5631     # 1292: attribute "foo" ignored
5632     # 1419: external declaration in primary source file
5633     # 10006: ignoring unknown option -fno-signed-zeros
5634     # 10148: ignoring unknown option -Wno-parentheses
5635     # 10156: ignoring option '-W'; no argument required
5636     # 13200: No EMMS instruction before call to function
5637     # 13203: No EMMS instruction before return from function
5638     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5639     # 11030: Warning unknown option --as-needed
5640     # 10156: ignoring option '-export'; no argument required
5641     check_ldflags -wd10156,11030
5642     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5643     enable ebp_available
5644     # The test above does not test linking
5645     enabled lto && disable symver_asm_label
5646     if enabled x86_32; then
5647         icc_version=$($cc -dumpversion)
5648         test ${icc_version%%.*} -ge 11 &&
5649             check_cflags -falign-stack=maintain-16-byte ||
5650             disable aligned_stack
5651     fi
5652 elif enabled ccc; then
5653     # disable some annoying warnings
5654     add_cflags -msg_disable bitnotint
5655     add_cflags -msg_disable mixfuncvoid
5656     add_cflags -msg_disable nonstandcast
5657     add_cflags -msg_disable unsupieee
5658 elif enabled gcc; then
5659     check_optflags -fno-tree-vectorize
5660     check_cflags -Werror=format-security
5661     check_cflags -Werror=implicit-function-declaration
5662     check_cflags -Werror=missing-prototypes
5663     check_cflags -Werror=return-type
5664     check_cflags -Werror=vla
5665     check_cflags -Wformat
5666     check_cflags -fdiagnostics-color=auto
5667     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5668 elif enabled llvm_gcc; then
5669     check_cflags -mllvm -stack-alignment=16
5670 elif enabled clang; then
5671     check_cflags -mllvm -stack-alignment=16
5672     check_cflags -Qunused-arguments
5673     check_cflags -Werror=implicit-function-declaration
5674     check_cflags -Werror=missing-prototypes
5675     check_cflags -Werror=return-type
5676 elif enabled cparser; then
5677     add_cflags -Wno-missing-variable-declarations
5678     add_cflags -Wno-empty-statement
5679 elif enabled armcc; then
5680     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5681     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5682     # 2523: use of inline assembly is deprecated
5683     add_cflags -W${armcc_opt},--diag_suppress=2523
5684     add_cflags -W${armcc_opt},--diag_suppress=1207
5685     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5686     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5687     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5688     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5689 elif enabled tms470; then
5690     add_cflags -pds=824 -pds=837
5691     disable inline_asm
5692 elif enabled pathscale; then
5693     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5694 elif enabled_any msvc icl; then
5695     enabled x86_32 && disable aligned_stack
5696     enabled_all x86_32 debug && add_cflags -Oy-
5697     enabled debug && add_ldflags -debug
5698     enable pragma_deprecated
5699     if enabled icl; then
5700         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5701         # (correctly) on icl 13.x.
5702         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5703             add_cflags -Qansi-alias
5704         # Some inline asm is not compilable in debug
5705         if enabled debug; then
5706             disable ebp_available
5707             disable ebx_available
5708         fi
5709     fi
5710     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5711     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5712     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5713     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5714     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5715     # MSVC 2013 and newer can handle it fine.
5716     # If this declspec fails, force including stdlib.h before the restrict redefinition
5717     # happens in config.h.
5718     if [ $_restrict != restrict ]; then
5719         check_cc <<EOF || add_cflags -FIstdlib.h
5720 __declspec($_restrict) void* foo(int);
5721 EOF
5722     fi
5723     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5724 fi
5725
5726 for pfx in "" host_; do
5727     varname=${pfx%_}cc_type
5728     eval "type=\$$varname"
5729     if [ $type = "msvc" ]; then
5730         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5731 static inline int foo(int a) { return a; }
5732 EOF
5733     fi
5734 done
5735
5736 case $as_type in
5737     clang)
5738         add_asflags -Qunused-arguments
5739     ;;
5740 esac
5741
5742 case $ld_type in
5743     clang)
5744         check_ldflags -Qunused-arguments
5745     ;;
5746 esac
5747
5748 case $target_os in
5749     osf1)
5750         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5751     ;;
5752     plan9)
5753         add_cppflags -Dmain=plan9_main
5754     ;;
5755 esac
5756
5757 enable frame_thread_encoder
5758
5759 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5760
5761 check_deps $CONFIG_LIST       \
5762            $CONFIG_EXTRA      \
5763            $HAVE_LIST         \
5764            $ALL_COMPONENTS    \
5765
5766 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"
5767
5768
5769 if test $target_os = "haiku"; then
5770     disable memalign
5771     disable posix_memalign
5772 fi
5773
5774 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5775     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5776     enable dxva2_lib
5777
5778 ! enabled_any memalign posix_memalign aligned_malloc &&
5779     enabled simd_align_16 && enable memalign_hack
5780
5781 # add_dep lib dep
5782 # -> enable ${lib}_deps_${dep}
5783 # -> add $dep to ${lib}_deps only once
5784 add_dep() {
5785     lib=$1
5786     dep=$2
5787     enabled "${lib}_deps_${dep}" && return 0
5788     enable  "${lib}_deps_${dep}"
5789     prepend "${lib}_deps" $dep
5790 }
5791
5792 # merge deps lib components
5793 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5794 merge_deps() {
5795     lib=$1
5796     shift
5797     for comp in $*; do
5798         enabled $comp || continue
5799         eval "dep=\"\$${comp}_deps\""
5800         for d in $dep; do
5801             add_dep $lib $d
5802         done
5803     done
5804 }
5805
5806 merge_deps libavfilter $FILTER_LIST
5807
5808 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5809
5810 for thread in $THREADS_LIST; do
5811     if enabled $thread; then
5812         test -n "$thread_type" &&
5813             die "ERROR: Only one thread type must be selected." ||
5814             thread_type="$thread"
5815     fi
5816 done
5817
5818 enabled zlib && add_cppflags -DZLIB_CONST
5819
5820 # conditional library dependencies, in linking order
5821 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5822 enabled aresample_filter    && prepend avfilter_deps "swresample"
5823 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5824 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5825 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5826 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5827 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5828 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5829 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5830 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5831 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5832 enabled pan_filter          && prepend avfilter_deps "swresample"
5833 enabled pp_filter           && prepend avfilter_deps "postproc"
5834 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5835 enabled resample_filter && prepend avfilter_deps "avresample"
5836 enabled sab_filter          && prepend avfilter_deps "swscale"
5837 enabled scale_filter    && prepend avfilter_deps "swscale"
5838 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
5839 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5840 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5841 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5842 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5843
5844 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5845
5846 enabled opus_decoder    && prepend avcodec_deps "swresample"
5847
5848 expand_deps(){
5849     lib_deps=${1}_deps
5850     eval "deps=\$$lib_deps"
5851     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5852     unique $lib_deps
5853 }
5854
5855 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5856 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5857
5858 map 'expand_deps $v' $LIBRARY_LIST
5859
5860 echo "install prefix            $prefix"
5861 echo "source path               $source_path"
5862 echo "C compiler                $cc"
5863 echo "C library                 $libc_type"
5864 if test "$host_cc" != "$cc"; then
5865     echo "host C compiler           $host_cc"
5866     echo "host C library            $host_libc_type"
5867 fi
5868 echo "ARCH                      $arch ($cpu)"
5869 if test "$build_suffix" != ""; then
5870     echo "build suffix              $build_suffix"
5871 fi
5872 if test "$progs_suffix" != ""; then
5873     echo "progs suffix              $progs_suffix"
5874 fi
5875 if test "$extra_version" != ""; then
5876     echo "version string suffix     $extra_version"
5877 fi
5878 echo "big-endian                ${bigendian-no}"
5879 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5880 if enabled x86; then
5881     echo "${yasmexe}                      ${yasm-no}"
5882     echo "MMX enabled               ${mmx-no}"
5883     echo "MMXEXT enabled            ${mmxext-no}"
5884     echo "3DNow! enabled            ${amd3dnow-no}"
5885     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5886     echo "SSE enabled               ${sse-no}"
5887     echo "SSSE3 enabled             ${ssse3-no}"
5888     echo "AVX enabled               ${avx-no}"
5889     echo "XOP enabled               ${xop-no}"
5890     echo "FMA3 enabled              ${fma3-no}"
5891     echo "FMA4 enabled              ${fma4-no}"
5892     echo "i686 features enabled     ${i686-no}"
5893     echo "CMOV is fast              ${fast_cmov-no}"
5894     echo "EBX available             ${ebx_available-no}"
5895     echo "EBP available             ${ebp_available-no}"
5896 fi
5897 if enabled aarch64; then
5898     echo "NEON enabled              ${neon-no}"
5899     echo "VFP enabled               ${vfp-no}"
5900 fi
5901 if enabled arm; then
5902     echo "ARMv5TE enabled           ${armv5te-no}"
5903     echo "ARMv6 enabled             ${armv6-no}"
5904     echo "ARMv6T2 enabled           ${armv6t2-no}"
5905     echo "VFP enabled               ${vfp-no}"
5906     echo "NEON enabled              ${neon-no}"
5907     echo "THUMB enabled             ${thumb-no}"
5908 fi
5909 if enabled mips; then
5910     echo "MIPS FPU enabled          ${mipsfpu-no}"
5911     echo "MIPS32R5 enabled          ${mips32r5-no}"
5912     echo "MIPS64R6 enabled          ${mips64r6-no}"
5913     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5914     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5915     echo "MIPS MSA enabled          ${msa-no}"
5916     echo "LOONGSON MMI enabled      ${mmi-no}"
5917 fi
5918 if enabled ppc; then
5919     echo "AltiVec enabled           ${altivec-no}"
5920     echo "VSX enabled               ${vsx-no}"
5921     echo "POWER8 enabled            ${power8-no}"
5922     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5923     echo "dcbzl available           ${dcbzl-no}"
5924 fi
5925 echo "debug symbols             ${debug-no}"
5926 echo "strip symbols             ${stripping-no}"
5927 echo "optimize for size         ${small-no}"
5928 echo "optimizations             ${optimizations-no}"
5929 echo "static                    ${static-no}"
5930 echo "shared                    ${shared-no}"
5931 echo "postprocessing support    ${postproc-no}"
5932 echo "new filter support        ${avfilter-no}"
5933 echo "network support           ${network-no}"
5934 echo "threading support         ${thread_type-no}"
5935 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5936 echo "SDL support               ${sdl-no}"
5937 echo "opencl enabled            ${opencl-no}"
5938 echo "texi2html enabled         ${texi2html-no}"
5939 echo "perl enabled              ${perl-no}"
5940 echo "pod2man enabled           ${pod2man-no}"
5941 echo "makeinfo enabled          ${makeinfo-no}"
5942 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5943 test -n "$random_seed" &&
5944     echo "random seed               ${random_seed}"
5945 echo
5946
5947 echo "External libraries:"
5948 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5949 echo
5950
5951 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5952     echo "Enabled ${type}s:"
5953     eval list=\$$(toupper $type)_LIST
5954     print_enabled '_*' $list | print_3_columns
5955     echo
5956 done
5957
5958 license="LGPL version 2.1 or later"
5959 if enabled nonfree; then
5960     license="nonfree and unredistributable"
5961 elif enabled gplv3; then
5962     license="GPL version 3 or later"
5963 elif enabled lgplv3; then
5964     license="LGPL version 3 or later"
5965 elif enabled gpl; then
5966     license="GPL version 2 or later"
5967 fi
5968
5969 echo "License: $license"
5970
5971 echo "Creating config.mak, config.h, and doc/config.texi..."
5972
5973 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5974
5975 enabled stripping || strip="echo skipping strip"
5976
5977 config_files="$TMPH config.mak doc/config.texi"
5978
5979 cat > config.mak <<EOF
5980 # Automatically generated by configure - do not modify!
5981 ifndef FFMPEG_CONFIG_MAK
5982 FFMPEG_CONFIG_MAK=1
5983 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5984 prefix=$prefix
5985 LIBDIR=\$(DESTDIR)$libdir
5986 SHLIBDIR=\$(DESTDIR)$shlibdir
5987 INCDIR=\$(DESTDIR)$incdir
5988 BINDIR=\$(DESTDIR)$bindir
5989 DATADIR=\$(DESTDIR)$datadir
5990 DOCDIR=\$(DESTDIR)$docdir
5991 MANDIR=\$(DESTDIR)$mandir
5992 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
5993 SRC_PATH=$source_path
5994 ifndef MAIN_MAKEFILE
5995 SRC_PATH:=\$(SRC_PATH:.%=..%)
5996 endif
5997 CC_IDENT=$cc_ident
5998 ARCH=$arch
5999 INTRINSICS=$intrinsics
6000 CC=$cc
6001 CXX=$cxx
6002 AS=$as
6003 LD=$ld
6004 DEPCC=$dep_cc
6005 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6006 DEPAS=$as
6007 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6008 YASM=$yasmexe
6009 DEPYASM=$yasmexe
6010 AR=$ar
6011 ARFLAGS=$arflags
6012 AR_O=$ar_o
6013 RANLIB=$ranlib
6014 STRIP=$strip
6015 CP=cp -p
6016 LN_S=$ln_s
6017 CPPFLAGS=$CPPFLAGS
6018 CFLAGS=$CFLAGS
6019 CXXFLAGS=$CXXFLAGS
6020 ASFLAGS=$ASFLAGS
6021 AS_C=$AS_C
6022 AS_O=$AS_O
6023 CC_C=$CC_C
6024 CC_E=$CC_E
6025 CC_O=$CC_O
6026 CXX_C=$CXX_C
6027 CXX_O=$CXX_O
6028 LD_O=$LD_O
6029 LD_LIB=$LD_LIB
6030 LD_PATH=$LD_PATH
6031 DLLTOOL=$dlltool
6032 WINDRES=$windres
6033 DEPWINDRES=$dep_cc
6034 DOXYGEN=$doxygen
6035 LDFLAGS=$LDFLAGS
6036 LDEXEFLAGS=$LDEXEFLAGS
6037 LDLIBFLAGS=$LDLIBFLAGS
6038 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6039 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6040 YASMFLAGS=$YASMFLAGS
6041 BUILDSUF=$build_suffix
6042 PROGSSUF=$progs_suffix
6043 FULLNAME=$FULLNAME
6044 LIBPREF=$LIBPREF
6045 LIBSUF=$LIBSUF
6046 LIBNAME=$LIBNAME
6047 SLIBPREF=$SLIBPREF
6048 SLIBSUF=$SLIBSUF
6049 EXESUF=$EXESUF
6050 EXTRA_VERSION=$extra_version
6051 CCDEP=$CCDEP
6052 CXXDEP=$CXXDEP
6053 CCDEP_FLAGS=$CCDEP_FLAGS
6054 ASDEP=$ASDEP
6055 ASDEP_FLAGS=$ASDEP_FLAGS
6056 CC_DEPFLAGS=$CC_DEPFLAGS
6057 AS_DEPFLAGS=$AS_DEPFLAGS
6058 HOSTCC=$host_cc
6059 HOSTLD=$host_ld
6060 HOSTCFLAGS=$host_cflags
6061 HOSTCPPFLAGS=$host_cppflags
6062 HOSTEXESUF=$HOSTEXESUF
6063 HOSTLDFLAGS=$host_ldflags
6064 HOSTLIBS=$host_libs
6065 DEPHOSTCC=$host_cc
6066 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6067 HOSTCCDEP=$HOSTCCDEP
6068 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6069 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6070 HOSTCC_C=$HOSTCC_C
6071 HOSTCC_O=$HOSTCC_O
6072 HOSTLD_O=$HOSTLD_O
6073 TARGET_EXEC=$target_exec $target_exec_args
6074 TARGET_PATH=$target_path
6075 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6076 CFLAGS-ffplay=$sdl_cflags
6077 ZLIB=$($ldflags_filter -lz)
6078 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6079 EXTRALIBS=$extralibs
6080 COMPAT_OBJS=$compat_objs
6081 EXEOBJS=$exeobjs
6082 INSTALL=$install
6083 LIBTARGET=${LIBTARGET}
6084 SLIBNAME=${SLIBNAME}
6085 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6086 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6087 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6088 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6089 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6090 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6091 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6092 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6093 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6094 NOREDZONE_FLAGS=$noredzone_flags
6095 EOF
6096
6097 get_version(){
6098     lcname=lib${1}
6099     name=$(toupper $lcname)
6100     file=$source_path/$lcname/version.h
6101     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6102     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6103     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6104     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6105     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6106     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6107 }
6108
6109 map 'get_version $v' $LIBRARY_LIST
6110
6111 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6112
6113 print_program_libs(){
6114     eval "program_libs=\$${1}_libs"
6115     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6116 }
6117
6118 map 'print_program_libs $v' $PROGRAM_LIST
6119
6120 cat > $TMPH <<EOF
6121 /* Automatically generated by configure - do not modify! */
6122 #ifndef FFMPEG_CONFIG_H
6123 #define FFMPEG_CONFIG_H
6124 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6125 #define FFMPEG_LICENSE "$(c_escape $license)"
6126 #define CONFIG_THIS_YEAR 2015
6127 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6128 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6129 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6130 #define av_restrict $_restrict
6131 #define EXTERN_PREFIX "${extern_prefix}"
6132 #define EXTERN_ASM ${extern_prefix}
6133 #define BUILDSUF "$build_suffix"
6134 #define SLIBSUF "$SLIBSUF"
6135 #define HAVE_MMX2 HAVE_MMXEXT
6136 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6137 EOF
6138
6139 test -n "$assert_level" &&
6140     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6141
6142 test -n "$malloc_prefix" &&
6143     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6144
6145 if enabled yasm; then
6146     append config_files $TMPASM
6147     printf '' >$TMPASM
6148 fi
6149
6150 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6151
6152
6153 mkdir -p doc
6154 mkdir -p tests
6155 mkdir -p tests/api
6156 echo "@c auto-generated by configure" > doc/config.texi
6157
6158 print_config ARCH_   "$config_files" $ARCH_LIST
6159 print_config HAVE_   "$config_files" $HAVE_LIST
6160 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6161                                      $CONFIG_EXTRA      \
6162                                      $ALL_COMPONENTS    \
6163
6164 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6165 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6166
6167 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6168 cp_if_changed $TMPH config.h
6169 touch .config
6170
6171 enabled yasm && cp_if_changed $TMPASM config.asm
6172
6173 cat > $TMPH <<EOF
6174 /* Generated by ffconf */
6175 #ifndef AVUTIL_AVCONFIG_H
6176 #define AVUTIL_AVCONFIG_H
6177 EOF
6178
6179 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6180
6181 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6182
6183 cp_if_changed $TMPH libavutil/avconfig.h
6184
6185 if test -n "$WARNINGS"; then
6186     printf "\n$WARNINGS"
6187     enabled fatal_warnings && exit 1
6188 fi
6189
6190 # build pkg-config files
6191
6192 lib_version(){
6193     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6194 }
6195
6196 pkgconfig_generate(){
6197     name=$1
6198     shortname=${name#lib}${build_suffix}
6199     comment=$2
6200     version=$3
6201     libs=$4
6202     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6203     requires=${requires%, }
6204     enabled ${name#lib} || return 0
6205     mkdir -p $name
6206     cat <<EOF > $name/$name${build_suffix}.pc
6207 prefix=$prefix
6208 exec_prefix=\${prefix}
6209 libdir=$libdir
6210 includedir=$incdir
6211
6212 Name: $name
6213 Description: $comment
6214 Version: $version
6215 Requires: $(enabled shared || echo $requires)
6216 Requires.private: $(enabled shared && echo $requires)
6217 Conflicts:
6218 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6219 Libs.private: $(enabled shared && echo $libs)
6220 Cflags: -I\${includedir}
6221 EOF
6222
6223 mkdir -p doc/examples/pc-uninstalled
6224 includedir=${source_path}
6225 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6226     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6227 prefix=
6228 exec_prefix=
6229 libdir=\${pcfiledir}/../../../$name
6230 includedir=${includedir}
6231
6232 Name: $name
6233 Description: $comment
6234 Version: $version
6235 Requires: $requires
6236 Conflicts:
6237 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6238 Cflags: -I\${includedir}
6239 EOF
6240 }
6241
6242 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6243 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6244 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6245 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6246 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6247 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6248 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6249 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6250 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"