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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-avutil         disable libavutil build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 200   --enable-frei0r          enable frei0r video filtering [no]
 201   --enable-gnutls          enable gnutls, needed for https support
 202                            if openssl is not used [no]
 203   --disable-iconv          disable iconv [autodetect]
 204   --enable-ladspa          enable LADSPA audio filtering [no]
 205   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 206   --enable-libass          enable libass subtitles rendering,
 207                            needed for subtitles and ass filter [no]
 208   --enable-libbluray       enable BluRay reading using libbluray [no]
 209   --enable-libbs2b         enable bs2b DSP library [no]
 210   --enable-libcaca         enable textual display using libcaca [no]
 211   --enable-libcelt         enable CELT decoding via libcelt [no]
 212   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 213   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 214                            and libraw1394 [no]
 215   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 216   --enable-libfaac         enable AAC encoding via libfaac [no]
 217   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 218   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 219   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 220   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 221   --enable-libgme          enable Game Music Emu via libgme [no]
 222   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 223   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 224   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 225   --enable-libmfx          enable HW acceleration through libmfx
 226   --enable-libmodplug      enable ModPlug via libmodplug [no]
 227   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 228   --enable-libnut          enable NUT (de)muxing via libnut,
 229                            native (de)muxer exists [no]
 230   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 231   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 232   --enable-libopencv       enable video filtering via libopencv [no]
 233   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 234   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 235   --enable-libopus         enable Opus de/encoding via libopus [no]
 236   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 237   --enable-libquvi         enable quvi input via libquvi [no]
 238   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 239   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 240   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 241   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 242   --enable-libsnappy       enable Snappy compression [no]
 243   --enable-libsoxr         enable Include libsoxr resampling [no]
 244   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 245   --enable-libssh          enable SFTP protocol via libssh [no]
 246   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 247   --enable-libtheora       enable Theora encoding via libtheora [no]
 248   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 249   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 250   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 251   --enable-libvidstab      enable video stabilization using vid.stab [no]
 252   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 253   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 254   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 255                            native implementation exists [no]
 256   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 257   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 258   --enable-libwebp         enable WebP encoding via libwebp [no]
 259   --enable-libx264         enable H.264 encoding via x264 [no]
 260   --enable-libx265         enable HEVC encoding via x265 [no]
 261   --enable-libxavs         enable AVS encoding via xavs [no]
 262   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 263   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 264   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 265   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 266   --enable-libxvid         enable Xvid encoding via xvidcore,
 267                            native MPEG-4/Xvid encoder exists [no]
 268   --enable-libzmq          enable message passing via libzmq [no]
 269   --enable-libzvbi         enable teletext support via libzvbi [no]
 270   --disable-lzma           disable lzma [autodetect]
 271   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 272   --enable-mmal            enable decoding via MMAL [no]
 273   --enable-nvenc           enable NVIDIA NVENC support [no]
 274   --enable-openal          enable OpenAL 1.1 capture support [no]
 275   --enable-opencl          enable OpenCL code
 276   --enable-opengl          enable OpenGL rendering [no]
 277   --enable-openssl         enable openssl, needed for https support
 278                            if gnutls is not used [no]
 279   --disable-sdl            disable sdl [autodetect]
 280   --disable-securetransport disable Secure Transport, needed for TLS support
 281                            on OSX if openssl and gnutls are not used [autodetect]
 282   --enable-x11grab         enable X11 grabbing (legacy) [no]
 283   --disable-xlib           disable xlib [autodetect]
 284   --disable-zlib           disable zlib [autodetect]
 285
 286 Toolchain options:
 287   --arch=ARCH              select architecture [$arch]
 288   --cpu=CPU                select the minimum required CPU (affects
 289                            instruction selection, may crash on older CPUs)
 290   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 291   --progs-suffix=SUFFIX    program name suffix []
 292   --enable-cross-compile   assume a cross-compiler is used
 293   --sysroot=PATH           root of cross-build tree
 294   --sysinclude=PATH        location of cross-build system headers
 295   --target-os=OS           compiler targets OS [$target_os]
 296   --target-exec=CMD        command to run executables on target
 297   --target-path=DIR        path to view of build directory on target
 298   --target-samples=DIR     path to samples directory on target
 299   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 300   --toolchain=NAME         set tool defaults according to NAME
 301   --nm=NM                  use nm tool NM [$nm_default]
 302   --ar=AR                  use archive tool AR [$ar_default]
 303   --as=AS                  use assembler AS [$as_default]
 304   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 305   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 306   --cc=CC                  use C compiler CC [$cc_default]
 307   --cxx=CXX                use C compiler CXX [$cxx_default]
 308   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 309   --ld=LD                  use linker LD [$ld_default]
 310   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 311   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 312   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 313   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 314   --host-cc=HOSTCC         use host C compiler HOSTCC
 315   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 316   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 317   --host-ld=HOSTLD         use host linker HOSTLD
 318   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 319   --host-libs=HLIBS        use libs HLIBS when linking for host
 320   --host-os=OS             compiler host OS [$target_os]
 321   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 322   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 323   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 324   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 325   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 326   --extra-version=STRING   version string suffix []
 327   --optflags=OPTFLAGS      override optimization-related compiler flags
 328   --build-suffix=SUFFIX    library name suffix []
 329   --enable-pic             build position-independent code
 330   --enable-thumb           compile for Thumb instruction set
 331   --enable-lto             use link-time optimization
 332   --env="ENV=override"     override the environment variables
 333
 334 Advanced options (experts only):
 335   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 336   --disable-symver         disable symbol versioning
 337   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 338   --disable-safe-bitstream-reader
 339                            disable buffer boundary checking in bitreaders
 340                            (faster, but may crash)
 341   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 342   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 343
 344 Optimization options (experts only):
 345   --disable-asm            disable all assembly optimizations
 346   --disable-altivec        disable AltiVec optimizations
 347   --disable-vsx            disable VSX optimizations
 348   --disable-power8         disable POWER8 optimizations
 349   --disable-amd3dnow       disable 3DNow! optimizations
 350   --disable-amd3dnowext    disable 3DNow! extended optimizations
 351   --disable-mmx            disable MMX optimizations
 352   --disable-mmxext         disable MMXEXT optimizations
 353   --disable-sse            disable SSE optimizations
 354   --disable-sse2           disable SSE2 optimizations
 355   --disable-sse3           disable SSE3 optimizations
 356   --disable-ssse3          disable SSSE3 optimizations
 357   --disable-sse4           disable SSE4 optimizations
 358   --disable-sse42          disable SSE4.2 optimizations
 359   --disable-avx            disable AVX optimizations
 360   --disable-xop            disable XOP optimizations
 361   --disable-fma3           disable FMA3 optimizations
 362   --disable-fma4           disable FMA4 optimizations
 363   --disable-avx2           disable AVX2 optimizations
 364   --disable-armv5te        disable armv5te optimizations
 365   --disable-armv6          disable armv6 optimizations
 366   --disable-armv6t2        disable armv6t2 optimizations
 367   --disable-vfp            disable VFP optimizations
 368   --disable-neon           disable NEON optimizations
 369   --disable-inline-asm     disable use of inline assembly
 370   --disable-yasm           disable use of nasm/yasm assembly
 371   --disable-mips32r5       disable MIPS32R5 optimizations
 372   --disable-mips64r6       disable MIPS64R6 optimizations
 373   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 374   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 375   --disable-msa            disable MSA optimizations
 376   --disable-mipsfpu        disable floating point MIPS optimizations
 377   --disable-loongson3      disable Loongson-3 SIMD optimizations
 378   --disable-fast-unaligned consider unaligned accesses slow
 379
 380 Developer options (useful when working on FFmpeg itself):
 381   --disable-debug          disable debugging symbols
 382   --enable-debug=LEVEL     set the debug level [$debuglevel]
 383   --disable-optimizations  disable compiler optimizations
 384   --enable-extra-warnings  enable more compiler warnings
 385   --disable-stripping      disable stripping of executables and shared libraries
 386   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 387                            2 causes a slowdown at runtime.
 388   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 389   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 390                            leaks and errors, using the specified valgrind binary.
 391                            Cannot be combined with --target-exec
 392   --enable-ftrapv          Trap arithmetic overflows
 393   --samples=PATH           location of test samples for FATE, if not set use
 394                            \$FATE_SAMPLES at make invocation time.
 395   --enable-neon-clobber-test check NEON registers for clobbering (should be
 396                            used only for debugging purposes)
 397   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 398                            should be used only for debugging purposes)
 399   --enable-random          randomly enable/disable components
 400   --disable-random
 401   --enable-random=LIST     randomly enable/disable specific components or
 402   --disable-random=LIST    component groups. LIST is a comma-separated list
 403                            of NAME[:PROB] entries where NAME is a component
 404                            (group) and PROB the probability associated with
 405                            NAME (default 0.5).
 406   --random-seed=VALUE      seed value for --enable/disable-random
 407   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 408                            (only applies to --disable-optimizations builds)
 409
 410 NOTE: Object files are built at the place where configure is launched.
 411 EOF
 412   exit 0
 413 }
 414
 415 quotes='""'
 416
 417 log(){
 418     echo "$@" >> $logfile
 419 }
 420
 421 log_file(){
 422     log BEGIN $1
 423     pr -n -t $1 >> $logfile
 424     log END $1
 425 }
 426
 427 echolog(){
 428     log "$@"
 429     echo "$@"
 430 }
 431
 432 warn(){
 433     log "WARNING: $*"
 434     WARNINGS="${WARNINGS}WARNING: $*\n"
 435 }
 436
 437 die(){
 438     echolog "$@"
 439     cat <<EOF
 440
 441 If you think configure made a mistake, make sure you are using the latest
 442 version from Git.  If the latest version fails, report the problem to the
 443 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 444 EOF
 445     if disabled logging; then
 446         cat <<EOF
 447 Rerun configure with logging enabled (do not use --disable-logging), and
 448 include the log this produces with your report.
 449 EOF
 450     else
 451         cat <<EOF
 452 Include the log file "$logfile" produced by configure as this will help
 453 solve the problem.
 454 EOF
 455     fi
 456     exit 1
 457 }
 458
 459 # Avoid locale weirdness, besides we really just want to translate ASCII.
 460 toupper(){
 461     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 462 }
 463
 464 tolower(){
 465     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 466 }
 467
 468 c_escape(){
 469     echo "$*" | sed 's/["\\]/\\\0/g'
 470 }
 471
 472 sh_quote(){
 473     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 474     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 475     echo "$v"
 476 }
 477
 478 cleanws(){
 479     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 480 }
 481
 482 filter(){
 483     pat=$1
 484     shift
 485     for v; do
 486         eval "case $v in $pat) echo $v ;; esac"
 487     done
 488 }
 489
 490 filter_out(){
 491     pat=$1
 492     shift
 493     for v; do
 494         eval "case $v in $pat) ;; *) echo $v ;; esac"
 495     done
 496 }
 497
 498 map(){
 499     m=$1
 500     shift
 501     for v; do eval $m; done
 502 }
 503
 504 add_suffix(){
 505     suffix=$1
 506     shift
 507     for v; do echo ${v}${suffix}; done
 508 }
 509
 510 set_all(){
 511     value=$1
 512     shift
 513     for var in $*; do
 514         eval $var=$value
 515     done
 516 }
 517
 518 set_weak(){
 519     value=$1
 520     shift
 521     for var; do
 522         eval : \${$var:=$value}
 523     done
 524 }
 525
 526 sanitize_var_name(){
 527     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 528 }
 529
 530 set_safe(){
 531     var=$1
 532     shift
 533     eval $(sanitize_var_name "$var")='$*'
 534 }
 535
 536 get_safe(){
 537     eval echo \$$(sanitize_var_name "$1")
 538 }
 539
 540 pushvar(){
 541     for pvar in $*; do
 542         eval level=\${${pvar}_level:=0}
 543         eval ${pvar}_${level}="\$$pvar"
 544         eval ${pvar}_level=$(($level+1))
 545     done
 546 }
 547
 548 popvar(){
 549     for pvar in $*; do
 550         eval level=\${${pvar}_level:-0}
 551         test $level = 0 && continue
 552         eval level=$(($level-1))
 553         eval $pvar="\${${pvar}_${level}}"
 554         eval ${pvar}_level=$level
 555         eval unset ${pvar}_${level}
 556     done
 557 }
 558
 559 enable(){
 560     set_all yes $*
 561 }
 562
 563 disable(){
 564     set_all no $*
 565 }
 566
 567 enable_weak(){
 568     set_weak yes $*
 569 }
 570
 571 disable_weak(){
 572     set_weak no $*
 573 }
 574
 575 enable_safe(){
 576     for var; do
 577         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 578     done
 579 }
 580
 581 disable_safe(){
 582     for var; do
 583         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 584     done
 585 }
 586
 587 do_enable_deep(){
 588     for var; do
 589         enabled $var && continue
 590         eval sel="\$${var}_select"
 591         eval sgs="\$${var}_suggest"
 592         pushvar var sgs
 593         enable_deep $sel
 594         popvar sgs
 595         enable_deep_weak $sgs
 596         popvar var
 597     done
 598 }
 599
 600 enable_deep(){
 601     do_enable_deep $*
 602     enable $*
 603 }
 604
 605 enable_deep_weak(){
 606     for var; do
 607         disabled $var && continue
 608         pushvar var
 609         do_enable_deep $var
 610         popvar var
 611         enable_weak $var
 612     done
 613 }
 614
 615 enabled(){
 616     test "${1#!}" = "$1" && op== || op=!=
 617     eval test "x\$${1#!}" $op "xyes"
 618 }
 619
 620 disabled(){
 621     test "${1#!}" = "$1" && op== || op=!=
 622     eval test "x\$${1#!}" $op "xno"
 623 }
 624
 625 enabled_all(){
 626     for opt; do
 627         enabled $opt || return 1
 628     done
 629 }
 630
 631 disabled_all(){
 632     for opt; do
 633         disabled $opt || return 1
 634     done
 635 }
 636
 637 enabled_any(){
 638     for opt; do
 639         enabled $opt && return 0
 640     done
 641 }
 642
 643 disabled_any(){
 644     for opt; do
 645         disabled $opt && return 0
 646     done
 647     return 1
 648 }
 649
 650 set_default(){
 651     for opt; do
 652         eval : \${$opt:=\$${opt}_default}
 653     done
 654 }
 655
 656 is_in(){
 657     value=$1
 658     shift
 659     for var in $*; do
 660         [ $var = $value ] && return 0
 661     done
 662     return 1
 663 }
 664
 665 do_check_deps(){
 666     for cfg; do
 667         cfg="${cfg#!}"
 668         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 669         disabled ${cfg}_checking && continue
 670         enable ${cfg}_checking
 671         append allopts $cfg
 672
 673         eval dep_all="\$${cfg}_deps"
 674         eval dep_any="\$${cfg}_deps_any"
 675         eval dep_sel="\$${cfg}_select"
 676         eval dep_sgs="\$${cfg}_suggest"
 677         eval dep_ifa="\$${cfg}_if"
 678         eval dep_ifn="\$${cfg}_if_any"
 679
 680         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 681         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 682         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 683
 684         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 685         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 686         enabled_all  $dep_all || disable $cfg
 687         enabled_any  $dep_any || disable $cfg
 688         disabled_any $dep_sel && disable $cfg
 689
 690         if enabled $cfg; then
 691             enable_deep $dep_sel
 692             enable_deep_weak $dep_sgs
 693         fi
 694
 695         disable ${cfg}_checking
 696     done
 697 }
 698
 699 check_deps(){
 700     unset allopts
 701
 702     do_check_deps "$@"
 703
 704     for cfg in $allopts; do
 705         enabled $cfg || continue
 706         eval dep_extralibs="\$${cfg}_extralibs"
 707         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 708     done
 709 }
 710
 711 print_config(){
 712     pfx=$1
 713     files=$2
 714     shift 2
 715     map 'eval echo "$v \${$v:-no}"' "$@" |
 716     awk "BEGIN { split(\"$files\", files) }
 717         {
 718             c = \"$pfx\" toupper(\$1);
 719             v = \$2;
 720             sub(/yes/, 1, v);
 721             sub(/no/,  0, v);
 722             for (f in files) {
 723                 file = files[f];
 724                 if (file ~ /\\.h\$/) {
 725                     printf(\"#define %s %d\\n\", c, v) >>file;
 726                 } else if (file ~ /\\.asm\$/) {
 727                     printf(\"%%define %s %d\\n\", c, v) >>file;
 728                 } else if (file ~ /\\.mak\$/) {
 729                     n = -v ? \"\" : \"!\";
 730                     printf(\"%s%s=yes\\n\", n, c) >>file;
 731                 } else if (file ~ /\\.texi\$/) {
 732                     pre = -v ? \"\" : \"@c \";
 733                     yesno = \$2;
 734                     c2 = tolower(c);
 735                     gsub(/_/, \"-\", c2);
 736                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 737                 }
 738             }
 739         }"
 740 }
 741
 742 print_enabled(){
 743     suf=$1
 744     shift
 745     for v; do
 746         enabled $v && printf "%s\n" ${v%$suf};
 747     done
 748 }
 749
 750 append(){
 751     var=$1
 752     shift
 753     eval "$var=\"\$$var $*\""
 754 }
 755
 756 prepend(){
 757     var=$1
 758     shift
 759     eval "$var=\"$* \$$var\""
 760 }
 761
 762 unique(){
 763     var=$1
 764     uniq_list=""
 765     for tok in $(eval echo \$$var); do
 766         uniq_list="$(filter_out $tok $uniq_list) $tok"
 767     done
 768     eval "$var=\"${uniq_list}\""
 769 }
 770
 771 add_cppflags(){
 772     append CPPFLAGS "$@"
 773 }
 774
 775 add_cflags(){
 776     append CFLAGS $($cflags_filter "$@")
 777 }
 778
 779 add_cxxflags(){
 780     append CXXFLAGS $($cflags_filter "$@")
 781 }
 782
 783 add_asflags(){
 784     append ASFLAGS $($asflags_filter "$@")
 785 }
 786
 787 add_ldflags(){
 788     append LDFLAGS $($ldflags_filter "$@")
 789 }
 790
 791 add_ldexeflags(){
 792     append LDEXEFLAGS $($ldflags_filter "$@")
 793 }
 794
 795 add_stripflags(){
 796     append ASMSTRIPFLAGS "$@"
 797 }
 798
 799 add_extralibs(){
 800     prepend extralibs $($ldflags_filter "$@")
 801 }
 802
 803 add_host_cppflags(){
 804     append host_cppflags "$@"
 805 }
 806
 807 add_host_cflags(){
 808     append host_cflags $($host_cflags_filter "$@")
 809 }
 810
 811 add_host_ldflags(){
 812     append host_ldflags $($host_ldflags_filter "$@")
 813 }
 814
 815 add_compat(){
 816     append compat_objs $1
 817     shift
 818     map 'add_cppflags -D$v' "$@"
 819 }
 820
 821 check_cmd(){
 822     log "$@"
 823     "$@" >> $logfile 2>&1
 824 }
 825
 826 check_stat(){
 827     log check_stat "$@"
 828     stat "$1" >> $logfile 2>&1
 829 }
 830
 831 cc_o(){
 832     eval printf '%s\\n' $CC_O
 833 }
 834
 835 cc_e(){
 836     eval printf '%s\\n' $CC_E
 837 }
 838
 839 check_cc(){
 840     log check_cc "$@"
 841     cat > $TMPC
 842     log_file $TMPC
 843     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 844 }
 845
 846 check_cxx(){
 847     log check_cxx "$@"
 848     cat > $TMPCPP
 849     log_file $TMPCPP
 850     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 851 }
 852
 853 check_oc(){
 854     log check_oc "$@"
 855     cat > $TMPM
 856     log_file $TMPM
 857     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 858 }
 859
 860 check_cpp(){
 861     log check_cpp "$@"
 862     cat > $TMPC
 863     log_file $TMPC
 864     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 865 }
 866
 867 as_o(){
 868     eval printf '%s\\n' $AS_O
 869 }
 870
 871 check_as(){
 872     log check_as "$@"
 873     cat > $TMPS
 874     log_file $TMPS
 875     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 876 }
 877
 878 check_inline_asm(){
 879     log check_inline_asm "$@"
 880     name="$1"
 881     code="$2"
 882     shift 2
 883     disable $name
 884     check_cc "$@" <<EOF && enable $name
 885 void foo(void){ __asm__ volatile($code); }
 886 EOF
 887 }
 888
 889 check_insn(){
 890     log check_insn "$@"
 891     check_inline_asm ${1}_inline "\"$2\""
 892     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 893 }
 894
 895 check_yasm(){
 896     log check_yasm "$@"
 897     echo "$1" > $TMPS
 898     log_file $TMPS
 899     shift 1
 900     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 901 }
 902
 903 ld_o(){
 904     eval printf '%s\\n' $LD_O
 905 }
 906
 907 check_ld(){
 908     log check_ld "$@"
 909     type=$1
 910     shift 1
 911     flags=$(filter_out '-l*|*.so' $@)
 912     libs=$(filter '-l*|*.so' $@)
 913     check_$type $($cflags_filter $flags) || return
 914     flags=$($ldflags_filter $flags)
 915     libs=$($ldflags_filter $libs)
 916     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 917 }
 918
 919 print_include(){
 920     hdr=$1
 921     test "${hdr%.h}" = "${hdr}" &&
 922         echo "#include $hdr"    ||
 923         echo "#include <$hdr>"
 924 }
 925
 926 check_code(){
 927     log check_code "$@"
 928     check=$1
 929     headers=$2
 930     code=$3
 931     shift 3
 932     {
 933         for hdr in $headers; do
 934             print_include $hdr
 935         done
 936         echo "int main(void) { $code; return 0; }"
 937     } | check_$check "$@"
 938 }
 939
 940 check_cppflags(){
 941     log check_cppflags "$@"
 942     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 943 int x;
 944 EOF
 945 }
 946
 947 test_cflags(){
 948     log test_cflags "$@"
 949     set -- $($cflags_filter "$@")
 950     check_cc "$@" <<EOF
 951 int x;
 952 EOF
 953 }
 954
 955 check_cflags(){
 956     log check_cflags "$@"
 957     test_cflags "$@" && add_cflags "$@"
 958 }
 959
 960 check_cxxflags(){
 961     log check_cxxflags "$@"
 962     set -- $($cflags_filter "$@")
 963     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 964 int x;
 965 EOF
 966 }
 967
 968 test_ldflags(){
 969     log test_ldflags "$@"
 970     check_ld "cc" "$@" <<EOF
 971 int main(void){ return 0; }
 972 EOF
 973 }
 974
 975 check_ldflags(){
 976     log check_ldflags "$@"
 977     test_ldflags "$@" && add_ldflags "$@"
 978 }
 979
 980 test_stripflags(){
 981     log test_stripflags "$@"
 982     # call check_cc to get a fresh TMPO
 983     check_cc <<EOF
 984 int main(void) { return 0; }
 985 EOF
 986     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 987 }
 988
 989 check_stripflags(){
 990     log check_stripflags "$@"
 991     test_stripflags "$@" && add_stripflags "$@"
 992 }
 993
 994 check_header(){
 995     log check_header "$@"
 996     header=$1
 997     shift
 998     disable_safe $header
 999     check_cpp "$@" <<EOF && enable_safe $header
1000 #include <$header>
1001 int x;
1002 EOF
1003 }
1004
1005 check_header_oc(){
1006     log check_header_oc "$@"
1007     rm -f -- "$TMPO"
1008     header=$1
1009     shift
1010     disable_safe $header
1011     {
1012        echo "#include <$header>"
1013        echo "int main(void) { return 0; }"
1014     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1015 }
1016
1017 check_func(){
1018     log check_func "$@"
1019     func=$1
1020     shift
1021     disable $func
1022     check_ld "cc" "$@" <<EOF && enable $func
1023 extern int $func();
1024 int main(void){ $func(); }
1025 EOF
1026 }
1027
1028 check_mathfunc(){
1029     log check_mathfunc "$@"
1030     func=$1
1031     narg=$2
1032     shift 2
1033     test $narg = 2 && args="f, g" || args="f"
1034     disable $func
1035     check_ld "cc" "$@" <<EOF && enable $func
1036 #include <math.h>
1037 float foo(float f, float g) { return $func($args); }
1038 int main(void){ return (int) foo; }
1039 EOF
1040 }
1041
1042 check_func_headers(){
1043     log check_func_headers "$@"
1044     headers=$1
1045     funcs=$2
1046     shift 2
1047     {
1048         for hdr in $headers; do
1049             print_include $hdr
1050         done
1051         for func in $funcs; do
1052             echo "long check_$func(void) { return (long) $func; }"
1053         done
1054         echo "int main(void) { return 0; }"
1055     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1056 }
1057
1058 check_class_headers_cpp(){
1059     log check_class_headers_cpp "$@"
1060     headers=$1
1061     classes=$2
1062     shift 2
1063     {
1064         for hdr in $headers; do
1065             echo "#include <$hdr>"
1066         done
1067         echo "int main(void) { "
1068         i=1
1069         for class in $classes; do
1070             echo "$class obj$i;"
1071             i=$(expr $i + 1)
1072         done
1073         echo "return 0; }"
1074     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1075 }
1076
1077 check_cpp_condition(){
1078     log check_cpp_condition "$@"
1079     header=$1
1080     condition=$2
1081     shift 2
1082     check_cpp "$@" <<EOF
1083 #include <$header>
1084 #if !($condition)
1085 #error "unsatisfied condition: $condition"
1086 #endif
1087 EOF
1088 }
1089
1090 check_lib(){
1091     log check_lib "$@"
1092     header="$1"
1093     func="$2"
1094     shift 2
1095     check_header $header && check_func $func "$@" && add_extralibs "$@"
1096 }
1097
1098 check_lib2(){
1099     log check_lib2 "$@"
1100     headers="$1"
1101     funcs="$2"
1102     shift 2
1103     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1104 }
1105
1106 check_lib_cpp(){
1107     log check_lib_cpp "$@"
1108     headers="$1"
1109     classes="$2"
1110     shift 2
1111     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1112 }
1113
1114 check_pkg_config(){
1115     log check_pkg_config "$@"
1116     pkgandversion="$1"
1117     pkg="${1%% *}"
1118     headers="$2"
1119     funcs="$3"
1120     shift 3
1121     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1122     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1123     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1124     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1125         set_safe "${pkg}_cflags" $pkg_cflags   &&
1126         set_safe "${pkg}_libs"   $pkg_libs
1127 }
1128
1129 check_exec(){
1130     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1131 }
1132
1133 check_exec_crash(){
1134     code=$(cat)
1135
1136     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1137     # are safe but may not be available everywhere.  Thus we use
1138     # raise(SIGTERM) instead.  The check is run in a subshell so we
1139     # can redirect the "Terminated" message from the shell.  SIGBUS
1140     # is not defined by standard C so it is used conditionally.
1141
1142     (check_exec "$@") >> $logfile 2>&1 <<EOF
1143 #include <signal.h>
1144 static void sighandler(int sig){
1145     raise(SIGTERM);
1146 }
1147 int foo(void){
1148     $code
1149 }
1150 int (*func_ptr)(void) = foo;
1151 int main(void){
1152     signal(SIGILL, sighandler);
1153     signal(SIGFPE, sighandler);
1154     signal(SIGSEGV, sighandler);
1155 #ifdef SIGBUS
1156     signal(SIGBUS, sighandler);
1157 #endif
1158     return func_ptr();
1159 }
1160 EOF
1161 }
1162
1163 check_type(){
1164     log check_type "$@"
1165     headers=$1
1166     type=$2
1167     shift 2
1168     disable_safe "$type"
1169     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1170 }
1171
1172 check_struct(){
1173     log check_struct "$@"
1174     headers=$1
1175     struct=$2
1176     member=$3
1177     shift 3
1178     disable_safe "${struct}_${member}"
1179     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1180         enable_safe "${struct}_${member}"
1181 }
1182
1183 check_builtin(){
1184     log check_builtin "$@"
1185     name=$1
1186     headers=$2
1187     builtin=$3
1188     shift 3
1189     disable "$name"
1190     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1191 }
1192
1193 check_compile_assert(){
1194     log check_compile_assert "$@"
1195     name=$1
1196     headers=$2
1197     condition=$3
1198     shift 3
1199     disable "$name"
1200     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1201 }
1202
1203 require(){
1204     name="$1"
1205     header="$2"
1206     func="$3"
1207     shift 3
1208     check_lib $header $func "$@" || die "ERROR: $name not found"
1209 }
1210
1211 require2(){
1212     name="$1"
1213     headers="$2"
1214     func="$3"
1215     shift 3
1216     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1217 }
1218
1219 require_cpp(){
1220     name="$1"
1221     headers="$2"
1222     classes="$3"
1223     shift 3
1224     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1225 }
1226
1227 use_pkg_config(){
1228     pkg="$1"
1229     check_pkg_config "$@" || return 1
1230     add_cflags    $(get_safe "${pkg}_cflags")
1231     add_extralibs $(get_safe "${pkg}_libs")
1232 }
1233
1234 require_pkg_config(){
1235     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1236 }
1237
1238 require_libfreetype(){
1239     log require_libfreetype "$@"
1240     pkg="freetype2"
1241     check_cmd $pkg_config --exists --print-errors $pkg \
1242       || die "ERROR: $pkg not found"
1243     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1244     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1245     {
1246         echo "#include <ft2build.h>"
1247         echo "#include FT_FREETYPE_H"
1248         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1249         echo "int main(void) { return 0; }"
1250     } | check_ld "cc" $pkg_cflags $pkg_libs \
1251       && set_safe "${pkg}_cflags" $pkg_cflags \
1252       && set_safe "${pkg}_libs"   $pkg_libs \
1253       || die "ERROR: $pkg not found"
1254     add_cflags    $(get_safe "${pkg}_cflags")
1255     add_extralibs $(get_safe "${pkg}_libs")
1256 }
1257
1258 hostcc_e(){
1259     eval printf '%s\\n' $HOSTCC_E
1260 }
1261
1262 hostcc_o(){
1263     eval printf '%s\\n' $HOSTCC_O
1264 }
1265
1266 check_host_cc(){
1267     log check_host_cc "$@"
1268     cat > $TMPC
1269     log_file $TMPC
1270     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1271 }
1272
1273 check_host_cpp(){
1274     log check_host_cpp "$@"
1275     cat > $TMPC
1276     log_file $TMPC
1277     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1278 }
1279
1280 check_host_cppflags(){
1281     log check_host_cppflags "$@"
1282     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1283 int x;
1284 EOF
1285 }
1286
1287 check_host_cflags(){
1288     log check_host_cflags "$@"
1289     set -- $($host_cflags_filter "$@")
1290     check_host_cc "$@" <<EOF && append host_cflags "$@"
1291 int x;
1292 EOF
1293 }
1294
1295 check_host_cpp_condition(){
1296     log check_host_cpp_condition "$@"
1297     header=$1
1298     condition=$2
1299     shift 2
1300     check_host_cpp "$@" <<EOF
1301 #include <$header>
1302 #if !($condition)
1303 #error "unsatisfied condition: $condition"
1304 #endif
1305 EOF
1306 }
1307
1308 apply(){
1309     file=$1
1310     shift
1311     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1312 }
1313
1314 cp_if_changed(){
1315     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1316     mkdir -p "$(dirname $2)"
1317     $cp_f "$1" "$2"
1318 }
1319
1320 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1321 # system-dependent things.
1322
1323 COMPONENT_LIST="
1324     bsfs
1325     decoders
1326     demuxers
1327     encoders
1328     filters
1329     hwaccels
1330     indevs
1331     muxers
1332     outdevs
1333     parsers
1334     protocols
1335 "
1336
1337 EXAMPLE_LIST="
1338     avio_reading_example
1339     avio_list_dir_example
1340     decoding_encoding_example
1341     demuxing_decoding_example
1342     extract_mvs_example
1343     filter_audio_example
1344     filtering_audio_example
1345     filtering_video_example
1346     metadata_example
1347     muxing_example
1348     qsvdec_example
1349     remuxing_example
1350     resampling_audio_example
1351     scaling_video_example
1352     transcode_aac_example
1353     transcoding_example
1354 "
1355
1356 EXTERNAL_LIBRARY_LIST="
1357     avisynth
1358     bzlib
1359     crystalhd
1360     decklink
1361     frei0r
1362     gnutls
1363     iconv
1364     ladspa
1365     libaacplus
1366     libass
1367     libbluray
1368     libbs2b
1369     libcaca
1370     libcdio
1371     libcelt
1372     libdc1394
1373     libdcadec
1374     libfaac
1375     libfdk_aac
1376     libflite
1377     libfontconfig
1378     libfreetype
1379     libfribidi
1380     libgme
1381     libgsm
1382     libiec61883
1383     libilbc
1384     libmfx
1385     libmodplug
1386     libmp3lame
1387     libnut
1388     libopencore_amrnb
1389     libopencore_amrwb
1390     libopencv
1391     libopenh264
1392     libopenjpeg
1393     libopus
1394     libpulse
1395     libquvi
1396     librtmp
1397     libschroedinger
1398     libshine
1399     libsmbclient
1400     libsnappy
1401     libsoxr
1402     libspeex
1403     libssh
1404     libstagefright_h264
1405     libtheora
1406     libtwolame
1407     libutvideo
1408     libv4l2
1409     libvidstab
1410     libvo_aacenc
1411     libvo_amrwbenc
1412     libvorbis
1413     libvpx
1414     libwavpack
1415     libwebp
1416     libx264
1417     libx265
1418     libxavs
1419     libxcb
1420     libxcb_shm
1421     libxcb_shape
1422     libxcb_xfixes
1423     libxvid
1424     libzmq
1425     libzvbi
1426     lzma
1427     mmal
1428     nvenc
1429     openal
1430     opencl
1431     opengl
1432     openssl
1433     sdl
1434     securetransport
1435     x11grab
1436     xlib
1437     zlib
1438 "
1439
1440 DOCUMENT_LIST="
1441     doc
1442     htmlpages
1443     manpages
1444     podpages
1445     txtpages
1446 "
1447
1448 FEATURE_LIST="
1449     ftrapv
1450     gray
1451     hardcoded_tables
1452     runtime_cpudetect
1453     safe_bitstream_reader
1454     shared
1455     small
1456     static
1457     swscale_alpha
1458 "
1459
1460 HWACCEL_LIST="
1461     d3d11va
1462     dxva2
1463     vaapi
1464     vda
1465     vdpau
1466     xvmc
1467 "
1468
1469 LIBRARY_LIST="
1470     avcodec
1471     avdevice
1472     avfilter
1473     avformat
1474     avresample
1475     avutil
1476     postproc
1477     swresample
1478     swscale
1479 "
1480
1481 LICENSE_LIST="
1482     gpl
1483     nonfree
1484     version3
1485 "
1486
1487 PROGRAM_LIST="
1488     ffplay
1489     ffprobe
1490     ffserver
1491     ffmpeg
1492 "
1493
1494 SUBSYSTEM_LIST="
1495     dct
1496     dwt
1497     error_resilience
1498     faan
1499     fast_unaligned
1500     fft
1501     lsp
1502     lzo
1503     mdct
1504     pixelutils
1505     network
1506     rdft
1507 "
1508
1509 CONFIG_LIST="
1510     $COMPONENT_LIST
1511     $DOCUMENT_LIST
1512     $EXAMPLE_LIST
1513     $EXTERNAL_LIBRARY_LIST
1514     $FEATURE_LIST
1515     $HWACCEL_LIST
1516     $LICENSE_LIST
1517     $LIBRARY_LIST
1518     $PROGRAM_LIST
1519     $SUBSYSTEM_LIST
1520     fontconfig
1521     incompatible_libav_abi
1522     memalign_hack
1523     memory_poisoning
1524     neon_clobber_test
1525     pic
1526     pod2man
1527     raise_major
1528     thumb
1529     valgrind_backtrace
1530     xmm_clobber_test
1531 "
1532
1533 THREADS_LIST="
1534     pthreads
1535     os2threads
1536     w32threads
1537 "
1538
1539 ATOMICS_LIST="
1540     atomics_gcc
1541     atomics_suncc
1542     atomics_win32
1543 "
1544
1545 ARCH_LIST="
1546     aarch64
1547     alpha
1548     arm
1549     avr32
1550     avr32_ap
1551     avr32_uc
1552     bfin
1553     ia64
1554     m68k
1555     mips
1556     mips64
1557     parisc
1558     ppc
1559     ppc64
1560     s390
1561     sh4
1562     sparc
1563     sparc64
1564     tilegx
1565     tilepro
1566     tomi
1567     x86
1568     x86_32
1569     x86_64
1570 "
1571
1572 ARCH_EXT_LIST_ARM="
1573     armv5te
1574     armv6
1575     armv6t2
1576     armv8
1577     neon
1578     vfp
1579     vfpv3
1580     setend
1581 "
1582
1583 ARCH_EXT_LIST_MIPS="
1584     mipsfpu
1585     mips32r2
1586     mips32r5
1587     mips64r6
1588     mipsdspr1
1589     mipsdspr2
1590     msa
1591 "
1592
1593 ARCH_EXT_LIST_LOONGSON="
1594     loongson3
1595 "
1596
1597 ARCH_EXT_LIST_X86_SIMD="
1598     amd3dnow
1599     amd3dnowext
1600     avx
1601     avx2
1602     fma3
1603     fma4
1604     mmx
1605     mmxext
1606     sse
1607     sse2
1608     sse3
1609     sse4
1610     sse42
1611     ssse3
1612     xop
1613 "
1614
1615 ARCH_EXT_LIST_PPC="
1616     altivec
1617     dcbzl
1618     ldbrx
1619     power8
1620     ppc4xx
1621     vsx
1622 "
1623
1624 ARCH_EXT_LIST_X86="
1625     $ARCH_EXT_LIST_X86_SIMD
1626     cpunop
1627     i686
1628 "
1629
1630 ARCH_EXT_LIST="
1631     $ARCH_EXT_LIST_ARM
1632     $ARCH_EXT_LIST_PPC
1633     $ARCH_EXT_LIST_X86
1634     $ARCH_EXT_LIST_MIPS
1635     $ARCH_EXT_LIST_LOONGSON
1636 "
1637
1638 ARCH_FEATURES="
1639     aligned_stack
1640     fast_64bit
1641     fast_clz
1642     fast_cmov
1643     local_aligned_8
1644     local_aligned_16
1645     local_aligned_32
1646     simd_align_16
1647 "
1648
1649 BUILTIN_LIST="
1650     atomic_cas_ptr
1651     atomic_compare_exchange
1652     machine_rw_barrier
1653     MemoryBarrier
1654     mm_empty
1655     rdtsc
1656     sarestart
1657     sync_val_compare_and_swap
1658 "
1659 HAVE_LIST_CMDLINE="
1660     inline_asm
1661     symver
1662     yasm
1663 "
1664
1665 HAVE_LIST_PUB="
1666     bigendian
1667     fast_unaligned
1668     incompatible_libav_abi
1669 "
1670
1671 HEADERS_LIST="
1672     alsa_asoundlib_h
1673     altivec_h
1674     arpa_inet_h
1675     asm_types_h
1676     cdio_paranoia_h
1677     cdio_paranoia_paranoia_h
1678     dev_bktr_ioctl_bt848_h
1679     dev_bktr_ioctl_meteor_h
1680     dev_ic_bt8xx_h
1681     dev_video_bktr_ioctl_bt848_h
1682     dev_video_meteor_ioctl_meteor_h
1683     direct_h
1684     dlfcn_h
1685     d3d11_h
1686     dxva_h
1687     ES2_gl_h
1688     gsm_h
1689     io_h
1690     mach_mach_time_h
1691     machine_ioctl_bt848_h
1692     machine_ioctl_meteor_h
1693     malloc_h
1694     openjpeg_1_5_openjpeg_h
1695     OpenGL_gl3_h
1696     poll_h
1697     sndio_h
1698     soundcard_h
1699     sys_mman_h
1700     sys_param_h
1701     sys_resource_h
1702     sys_select_h
1703     sys_soundcard_h
1704     sys_time_h
1705     sys_un_h
1706     sys_videoio_h
1707     termios_h
1708     udplite_h
1709     unistd_h
1710     valgrind_valgrind_h
1711     windows_h
1712     winsock2_h
1713 "
1714
1715 INTRINSICS_LIST="
1716     intrinsics_neon
1717 "
1718
1719 MATH_FUNCS="
1720     atanf
1721     atan2f
1722     cbrt
1723     cbrtf
1724     cosf
1725     exp2
1726     exp2f
1727     expf
1728     isinf
1729     isnan
1730     ldexpf
1731     llrint
1732     llrintf
1733     log2
1734     log2f
1735     log10f
1736     lrint
1737     lrintf
1738     powf
1739     rint
1740     round
1741     roundf
1742     sinf
1743     trunc
1744     truncf
1745 "
1746
1747 SYSTEM_FUNCS="
1748     access
1749     aligned_malloc
1750     clock_gettime
1751     closesocket
1752     CommandLineToArgvW
1753     CoTaskMemFree
1754     CryptGenRandom
1755     dlopen
1756     fcntl
1757     flt_lim
1758     fork
1759     getaddrinfo
1760     gethrtime
1761     getopt
1762     GetProcessAffinityMask
1763     GetProcessMemoryInfo
1764     GetProcessTimes
1765     getrusage
1766     getservbyport
1767     GetSystemTimeAsFileTime
1768     gettimeofday
1769     glob
1770     glXGetProcAddress
1771     gmtime_r
1772     inet_aton
1773     isatty
1774     jack_port_get_latency_range
1775     kbhit
1776     localtime_r
1777     lzo1x_999_compress
1778     mach_absolute_time
1779     MapViewOfFile
1780     memalign
1781     mkstemp
1782     mmap
1783     mprotect
1784     nanosleep
1785     PeekNamedPipe
1786     posix_memalign
1787     pthread_cancel
1788     sched_getaffinity
1789     SetConsoleTextAttribute
1790     setmode
1791     setrlimit
1792     Sleep
1793     strerror_r
1794     sysconf
1795     sysctl
1796     usleep
1797     VirtualAlloc
1798     wglGetProcAddress
1799 "
1800
1801 TOOLCHAIN_FEATURES="
1802     as_dn_directive
1803     as_func
1804     as_object_arch
1805     asm_mod_q
1806     attribute_may_alias
1807     attribute_packed
1808     ebp_available
1809     ebx_available
1810     gnu_as
1811     gnu_windres
1812     ibm_asm
1813     inline_asm_labels
1814     inline_asm_nonlocal_labels
1815     inline_asm_direct_symbol_refs
1816     pragma_deprecated
1817     rsync_contimeout
1818     symver_asm_label
1819     symver_gnu_asm
1820     vfp_args
1821     xform_asm
1822     xmm_clobbers
1823 "
1824
1825 TYPES_LIST="
1826     CONDITION_VARIABLE_Ptr
1827     socklen_t
1828     struct_addrinfo
1829     struct_group_source_req
1830     struct_ip_mreq_source
1831     struct_ipv6_mreq
1832     struct_pollfd
1833     struct_rusage_ru_maxrss
1834     struct_sctp_event_subscribe
1835     struct_sockaddr_in6
1836     struct_sockaddr_sa_len
1837     struct_sockaddr_storage
1838     struct_stat_st_mtim_tv_nsec
1839     struct_v4l2_frmivalenum_discrete
1840 "
1841
1842 HAVE_LIST="
1843     $ARCH_EXT_LIST
1844     $(add_suffix _external $ARCH_EXT_LIST)
1845     $(add_suffix _inline   $ARCH_EXT_LIST)
1846     $ARCH_FEATURES
1847     $ATOMICS_LIST
1848     $BUILTIN_LIST
1849     $HAVE_LIST_CMDLINE
1850     $HAVE_LIST_PUB
1851     $HEADERS_LIST
1852     $INTRINSICS_LIST
1853     $MATH_FUNCS
1854     $SYSTEM_FUNCS
1855     $THREADS_LIST
1856     $TOOLCHAIN_FEATURES
1857     $TYPES_LIST
1858     atomics_native
1859     dos_paths
1860     dxva2api_cobj
1861     dxva2_lib
1862     libc_msvcrt
1863     libdc1394_1
1864     libdc1394_2
1865     makeinfo
1866     makeinfo_html
1867     perl
1868     pod2man
1869     sdl
1870     section_data_rel_ro
1871     texi2html
1872     threads
1873     vaapi_x11
1874     vdpau_x11
1875     xlib
1876 "
1877
1878 # options emitted with CONFIG_ prefix but not available on the command line
1879 CONFIG_EXTRA="
1880     aandcttables
1881     ac3dsp
1882     audio_frame_queue
1883     audiodsp
1884     blockdsp
1885     bswapdsp
1886     cabac
1887     dvprofile
1888     exif
1889     faandct
1890     faanidct
1891     fdctdsp
1892     fmtconvert
1893     frame_thread_encoder
1894     gcrypt
1895     gmp
1896     golomb
1897     gplv3
1898     h263dsp
1899     h264chroma
1900     h264dsp
1901     h264pred
1902     h264qpel
1903     hpeldsp
1904     huffman
1905     huffyuvdsp
1906     huffyuvencdsp
1907     idctdsp
1908     iirfilter
1909     imdct15
1910     intrax8
1911     jpegtables
1912     lgplv3
1913     llauddsp
1914     llviddsp
1915     lpc
1916     me_cmp
1917     mpeg_er
1918     mpegaudio
1919     mpegaudiodsp
1920     mpegvideo
1921     mpegvideoenc
1922     pixblockdsp
1923     qpeldsp
1924     qsv
1925     qsvdec
1926     qsvenc
1927     rangecoder
1928     riffdec
1929     riffenc
1930     rtpdec
1931     rtpenc_chain
1932     sinewin
1933     snappy
1934     startcode
1935     texturedsp
1936     texturedspenc
1937     tpeldsp
1938     videodsp
1939     vp3dsp
1940     wma_freqs
1941 "
1942
1943 CMDLINE_SELECT="
1944     $ARCH_EXT_LIST
1945     $CONFIG_LIST
1946     $HAVE_LIST_CMDLINE
1947     $THREADS_LIST
1948     asm
1949     cross_compile
1950     debug
1951     extra_warnings
1952     logging
1953     lto
1954     optimizations
1955     rpath
1956     stripping
1957 "
1958
1959 PATHS_LIST="
1960     bindir
1961     datadir
1962     docdir
1963     incdir
1964     libdir
1965     mandir
1966     pkgconfigdir
1967     prefix
1968     shlibdir
1969 "
1970
1971 CMDLINE_SET="
1972     $PATHS_LIST
1973     ar
1974     arch
1975     as
1976     assert_level
1977     build_suffix
1978     cc
1979     cpu
1980     cross_prefix
1981     cxx
1982     dep_cc
1983     doxygen
1984     env
1985     extra_version
1986     gas
1987     host_cc
1988     host_cflags
1989     host_ld
1990     host_ldflags
1991     host_libs
1992     host_os
1993     install
1994     ld
1995     logfile
1996     malloc_prefix
1997     nm
1998     optflags
1999     pkg_config
2000     pkg_config_flags
2001     progs_suffix
2002     random_seed
2003     ranlib
2004     samples
2005     strip
2006     sws_max_filter_size
2007     sysinclude
2008     sysroot
2009     target_exec
2010     target_os
2011     target_path
2012     target_samples
2013     tempprefix
2014     toolchain
2015     valgrind
2016     yasmexe
2017 "
2018
2019 CMDLINE_APPEND="
2020     extra_cflags
2021     extra_cxxflags
2022     host_cppflags
2023 "
2024
2025 # code dependency declarations
2026
2027 # architecture extensions
2028
2029 armv5te_deps="arm"
2030 armv6_deps="arm"
2031 armv6t2_deps="arm"
2032 armv8_deps="aarch64"
2033 neon_deps_any="aarch64 arm"
2034 intrinsics_neon_deps="neon"
2035 vfp_deps_any="aarch64 arm"
2036 vfpv3_deps="vfp"
2037 setend_deps="arm"
2038
2039 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2040
2041 mipsfpu_deps="mips"
2042 mipsdspr1_deps="mips"
2043 mipsdspr2_deps="mips"
2044 mips32r2_deps="mips"
2045 mips32r5_deps="mips"
2046 mips64r6_deps="mips"
2047 msa_deps="mips"
2048 loongson3_deps="mips"
2049
2050 altivec_deps="ppc"
2051 dcbzl_deps="ppc"
2052 ldbrx_deps="ppc"
2053 ppc4xx_deps="ppc"
2054 vsx_deps="altivec"
2055 power8_deps="vsx"
2056
2057 cpunop_deps="i686"
2058 x86_64_select="i686"
2059 x86_64_suggest="fast_cmov"
2060
2061 amd3dnow_deps="mmx"
2062 amd3dnowext_deps="amd3dnow"
2063 i686_deps="x86"
2064 mmx_deps="x86"
2065 mmxext_deps="mmx"
2066 sse_deps="mmxext"
2067 sse2_deps="sse"
2068 sse3_deps="sse2"
2069 ssse3_deps="sse3"
2070 sse4_deps="ssse3"
2071 sse42_deps="sse4"
2072 avx_deps="sse42"
2073 xop_deps="avx"
2074 fma3_deps="avx"
2075 fma4_deps="avx"
2076 avx2_deps="avx"
2077
2078 mmx_external_deps="yasm"
2079 mmx_inline_deps="inline_asm"
2080 mmx_suggest="mmx_external mmx_inline"
2081
2082 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2083     eval dep=\$${ext}_deps
2084     eval ${ext}_external_deps='"${dep}_external"'
2085     eval ${ext}_inline_deps='"${dep}_inline"'
2086     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2087 done
2088
2089 aligned_stack_if_any="aarch64 ppc x86"
2090 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2091 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2092 fast_unaligned_if_any="aarch64 ppc x86"
2093 simd_align_16_if_any="altivec neon sse"
2094
2095 # system capabilities
2096 symver_if_any="symver_asm_label symver_gnu_asm"
2097 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2098
2099 # threading support
2100 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2101 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2102 atomics_win32_if="MemoryBarrier"
2103 atomics_native_if_any="$ATOMICS_LIST"
2104 w32threads_deps="atomics_native"
2105 threads_if_any="$THREADS_LIST"
2106
2107 # subsystems
2108 dct_select="rdft"
2109 error_resilience_select="me_cmp"
2110 faandct_deps="faan fdctdsp"
2111 faanidct_deps="faan idctdsp"
2112 frame_thread_encoder_deps="encoders threads"
2113 intrax8_select="error_resilience"
2114 mdct_select="fft"
2115 rdft_select="fft"
2116 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2117 mpeg_er_select="error_resilience"
2118 mpegaudio_select="mpegaudiodsp"
2119 mpegaudiodsp_select="dct"
2120 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2121 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2122 qsvdec_select="qsv"
2123 qsvenc_select="qsv"
2124
2125 # decoders / encoders
2126 aac_decoder_select="imdct15 mdct sinewin"
2127 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2128 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2129 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2130 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2131 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2132 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2133 aic_decoder_select="golomb idctdsp"
2134 alac_encoder_select="lpc"
2135 als_decoder_select="bswapdsp"
2136 amrnb_decoder_select="lsp"
2137 amrwb_decoder_select="lsp"
2138 amv_decoder_select="sp5x_decoder exif"
2139 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2140 ape_decoder_select="bswapdsp llauddsp"
2141 apng_decoder_select="zlib"
2142 apng_encoder_select="huffyuvencdsp zlib"
2143 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2144 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2145 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2146 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2147 atrac1_decoder_select="mdct sinewin"
2148 atrac3_decoder_select="mdct"
2149 atrac3p_decoder_select="mdct sinewin"
2150 avrn_decoder_select="exif jpegtables"
2151 bink_decoder_select="blockdsp hpeldsp"
2152 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2153 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2154 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2155 cllc_decoder_select="bswapdsp"
2156 comfortnoise_encoder_select="lpc"
2157 cook_decoder_select="audiodsp mdct sinewin"
2158 cscd_decoder_select="lzo"
2159 cscd_decoder_suggest="zlib"
2160 dca_decoder_select="fmtconvert mdct"
2161 dds_decoder_select="texturedsp"
2162 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2163 dnxhd_decoder_select="blockdsp idctdsp"
2164 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2165 dvvideo_decoder_select="dvprofile idctdsp"
2166 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2167 dxa_decoder_select="zlib"
2168 eac3_decoder_select="ac3_decoder"
2169 eac3_encoder_select="ac3_encoder"
2170 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2171 eatgq_decoder_select="aandcttables"
2172 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2173 exr_decoder_select="zlib"
2174 ffv1_decoder_select="golomb rangecoder"
2175 ffv1_encoder_select="rangecoder"
2176 ffvhuff_decoder_select="huffyuv_decoder"
2177 ffvhuff_encoder_select="huffyuv_encoder"
2178 fic_decoder_select="golomb"
2179 flac_decoder_select="golomb"
2180 flac_encoder_select="bswapdsp golomb lpc"
2181 flashsv_decoder_select="zlib"
2182 flashsv_encoder_select="zlib"
2183 flashsv2_encoder_select="zlib"
2184 flashsv2_decoder_select="zlib"
2185 flv_decoder_select="h263_decoder"
2186 flv_encoder_select="h263_encoder"
2187 fourxm_decoder_select="blockdsp bswapdsp"
2188 fraps_decoder_select="bswapdsp huffman"
2189 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2190 g729_decoder_select="audiodsp"
2191 h261_decoder_select="mpeg_er mpegvideo"
2192 h261_encoder_select="aandcttables mpegvideoenc"
2193 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2194 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2195 h263i_decoder_select="h263_decoder"
2196 h263p_decoder_select="h263_decoder"
2197 h263p_encoder_select="h263_encoder"
2198 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2199 h264_decoder_suggest="error_resilience"
2200 h264_qsv_decoder_deps="libmfx"
2201 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2202 h264_qsv_encoder_deps="libmfx"
2203 h264_qsv_encoder_select="qsvenc"
2204 hap_decoder_select="snappy texturedsp"
2205 hap_encoder_deps="libsnappy"
2206 hap_encoder_select="texturedspenc"
2207 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2208 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2209 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2210 iac_decoder_select="imc_decoder"
2211 imc_decoder_select="bswapdsp fft mdct sinewin"
2212 indeo3_decoder_select="hpeldsp"
2213 interplay_video_decoder_select="hpeldsp"
2214 jpegls_decoder_select="golomb mjpeg_decoder"
2215 jpegls_encoder_select="golomb"
2216 jv_decoder_select="blockdsp"
2217 lagarith_decoder_select="huffyuvdsp"
2218 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2219 loco_decoder_select="golomb"
2220 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2221 metasound_decoder_select="lsp mdct sinewin"
2222 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2223 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2224 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2225 mjpegb_decoder_select="mjpeg_decoder"
2226 mlp_decoder_select="mlp_parser"
2227 motionpixels_decoder_select="bswapdsp"
2228 mp1_decoder_select="mpegaudio"
2229 mp1float_decoder_select="mpegaudio"
2230 mp2_decoder_select="mpegaudio"
2231 mp2float_decoder_select="mpegaudio"
2232 mp3_decoder_select="mpegaudio"
2233 mp3adu_decoder_select="mpegaudio"
2234 mp3adufloat_decoder_select="mpegaudio"
2235 mp3float_decoder_select="mpegaudio"
2236 mp3on4_decoder_select="mpegaudio"
2237 mp3on4float_decoder_select="mpegaudio"
2238 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2239 mpc8_decoder_select="mpegaudiodsp"
2240 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2241 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2242 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2243 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2244 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2245 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2246 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2247 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2248 mpeg4_encoder_select="h263_encoder"
2249 msmpeg4v1_decoder_select="h263_decoder"
2250 msmpeg4v2_decoder_select="h263_decoder"
2251 msmpeg4v2_encoder_select="h263_encoder"
2252 msmpeg4v3_decoder_select="h263_decoder"
2253 msmpeg4v3_encoder_select="h263_encoder"
2254 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2255 mxpeg_decoder_select="mjpeg_decoder"
2256 nellymoser_decoder_select="mdct sinewin"
2257 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2258 nuv_decoder_select="idctdsp lzo"
2259 on2avc_decoder_select="mdct"
2260 opus_decoder_deps="swresample"
2261 opus_decoder_select="imdct15"
2262 png_decoder_select="zlib"
2263 png_encoder_select="huffyuvencdsp zlib"
2264 prores_decoder_select="blockdsp idctdsp"
2265 prores_encoder_select="fdctdsp"
2266 qcelp_decoder_select="lsp"
2267 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2268 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2269 ra_144_decoder_select="audiodsp"
2270 ralf_decoder_select="golomb"
2271 rawvideo_decoder_select="bswapdsp"
2272 rtjpeg_decoder_select="me_cmp"
2273 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2274 rv10_encoder_select="h263_encoder"
2275 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2276 rv20_encoder_select="h263_encoder"
2277 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2278 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2279 shorten_decoder_select="golomb"
2280 sipr_decoder_select="lsp"
2281 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2282 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2283 sonic_decoder_select="golomb rangecoder"
2284 sonic_encoder_select="golomb rangecoder"
2285 sonic_ls_encoder_select="golomb rangecoder"
2286 sp5x_decoder_select="mjpeg_decoder"
2287 svq1_decoder_select="hpeldsp"
2288 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2289 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2290 svq3_decoder_suggest="zlib"
2291 tak_decoder_select="audiodsp"
2292 tdsc_decoder_select="zlib mjpeg_decoder"
2293 theora_decoder_select="vp3_decoder"
2294 thp_decoder_select="mjpeg_decoder"
2295 tiff_decoder_suggest="zlib lzma"
2296 tiff_encoder_suggest="zlib"
2297 truehd_decoder_select="mlp_parser"
2298 truemotion2_decoder_select="bswapdsp"
2299 truespeech_decoder_select="bswapdsp"
2300 tscc_decoder_select="zlib"
2301 twinvq_decoder_select="mdct lsp sinewin"
2302 txd_decoder_select="texturedsp"
2303 utvideo_decoder_select="bswapdsp"
2304 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2305 vble_decoder_select="huffyuvdsp"
2306 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2307 vc1image_decoder_select="vc1_decoder"
2308 vorbis_decoder_select="mdct"
2309 vorbis_encoder_select="mdct"
2310 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2311 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2312 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2313 vp6a_decoder_select="vp6_decoder"
2314 vp6f_decoder_select="vp6_decoder"
2315 vp7_decoder_select="h264pred videodsp"
2316 vp8_decoder_select="h264pred videodsp"
2317 vp9_decoder_select="videodsp vp9_parser"
2318 webp_decoder_select="vp8_decoder"
2319 wmalossless_decoder_select="llauddsp"
2320 wmapro_decoder_select="mdct sinewin wma_freqs"
2321 wmav1_decoder_select="mdct sinewin wma_freqs"
2322 wmav1_encoder_select="mdct sinewin wma_freqs"
2323 wmav2_decoder_select="mdct sinewin wma_freqs"
2324 wmav2_encoder_select="mdct sinewin wma_freqs"
2325 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2326 wmv1_decoder_select="h263_decoder"
2327 wmv1_encoder_select="h263_encoder"
2328 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2329 wmv2_encoder_select="h263_encoder"
2330 wmv3_decoder_select="vc1_decoder"
2331 wmv3image_decoder_select="wmv3_decoder"
2332 zerocodec_decoder_select="zlib"
2333 zlib_decoder_select="zlib"
2334 zlib_encoder_select="zlib"
2335 zmbv_decoder_select="zlib"
2336 zmbv_encoder_select="zlib"
2337
2338 # hardware accelerators
2339 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2340 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2341 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2342 vaapi_deps="va_va_h"
2343 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2344 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2345 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2346 xvmc_deps="X11_extensions_XvMClib_h"
2347
2348 h263_vaapi_hwaccel_deps="vaapi"
2349 h263_vaapi_hwaccel_select="h263_decoder"
2350 h263_vdpau_hwaccel_deps="vdpau"
2351 h263_vdpau_hwaccel_select="h263_decoder"
2352 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2353 h264_d3d11va_hwaccel_deps="d3d11va"
2354 h264_d3d11va_hwaccel_select="h264_decoder"
2355 h264_dxva2_hwaccel_deps="dxva2"
2356 h264_dxva2_hwaccel_select="h264_decoder"
2357 h264_mmal_decoder_deps="mmal"
2358 h264_mmal_hwaccel_deps="mmal"
2359 h264_mmal_decoder_select="h264_decoder"
2360 h264_mmal_encoder_deps="mmal"
2361 h264_qsv_hwaccel_deps="libmfx"
2362 h264_vaapi_hwaccel_deps="vaapi"
2363 h264_vaapi_hwaccel_select="h264_decoder"
2364 h264_vda_decoder_deps="vda"
2365 h264_vda_decoder_select="h264_decoder"
2366 h264_vda_hwaccel_deps="vda"
2367 h264_vda_hwaccel_select="h264_decoder"
2368 h264_vda_old_hwaccel_deps="vda"
2369 h264_vda_old_hwaccel_select="h264_decoder"
2370 h264_vdpau_decoder_deps="vdpau"
2371 h264_vdpau_decoder_select="h264_decoder"
2372 h264_vdpau_hwaccel_deps="vdpau"
2373 h264_vdpau_hwaccel_select="h264_decoder"
2374 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2375 hevc_d3d11va_hwaccel_select="hevc_decoder"
2376 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2377 hevc_dxva2_hwaccel_select="hevc_decoder"
2378 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2379 hevc_vdpau_hwaccep_select="hevc_decoder"
2380 mpeg_vdpau_decoder_deps="vdpau"
2381 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2382 mpeg_xvmc_hwaccel_deps="xvmc"
2383 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2384 mpeg1_vdpau_decoder_deps="vdpau"
2385 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2386 mpeg1_vdpau_hwaccel_deps="vdpau"
2387 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2388 mpeg1_xvmc_hwaccel_deps="xvmc"
2389 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2390 mpeg2_crystalhd_decoder_select="crystalhd"
2391 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2392 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2393 mpeg2_dxva2_hwaccel_deps="dxva2"
2394 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2395 mpeg2_vaapi_hwaccel_deps="vaapi"
2396 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2397 mpeg2_vdpau_hwaccel_deps="vdpau"
2398 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2399 mpeg2_xvmc_hwaccel_deps="xvmc"
2400 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2401 mpeg4_crystalhd_decoder_select="crystalhd"
2402 mpeg4_vaapi_hwaccel_deps="vaapi"
2403 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2404 mpeg4_vdpau_decoder_deps="vdpau"
2405 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2406 mpeg4_vdpau_hwaccel_deps="vdpau"
2407 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2408 msmpeg4_crystalhd_decoder_select="crystalhd"
2409 vc1_crystalhd_decoder_select="crystalhd"
2410 vc1_d3d11va_hwaccel_deps="d3d11va"
2411 vc1_d3d11va_hwaccel_select="vc1_decoder"
2412 vc1_dxva2_hwaccel_deps="dxva2"
2413 vc1_dxva2_hwaccel_select="vc1_decoder"
2414 vc1_vaapi_hwaccel_deps="vaapi"
2415 vc1_vaapi_hwaccel_select="vc1_decoder"
2416 vc1_vdpau_decoder_deps="vdpau"
2417 vc1_vdpau_decoder_select="vc1_decoder"
2418 vc1_vdpau_hwaccel_deps="vdpau"
2419 vc1_vdpau_hwaccel_select="vc1_decoder"
2420 wmv3_crystalhd_decoder_select="crystalhd"
2421 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2422 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2423 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2424 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2425 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2426
2427 # parsers
2428 h264_parser_select="h264_decoder"
2429 hevc_parser_select="hevc_decoder"
2430 mpegvideo_parser_select="mpegvideo"
2431 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2432 vc1_parser_select="mpegvideo startcode vc1_decoder"
2433
2434 # bitstream_filters
2435 mjpeg2jpeg_bsf_select="jpegtables"
2436
2437 # external libraries
2438 libaacplus_encoder_deps="libaacplus"
2439 libcelt_decoder_deps="libcelt"
2440 libdcadec_decoder_deps="libdcadec"
2441 libfaac_encoder_deps="libfaac"
2442 libfaac_encoder_select="audio_frame_queue"
2443 libfdk_aac_decoder_deps="libfdk_aac"
2444 libfdk_aac_encoder_deps="libfdk_aac"
2445 libfdk_aac_encoder_select="audio_frame_queue"
2446 libgme_demuxer_deps="libgme"
2447 libgsm_decoder_deps="libgsm"
2448 libgsm_encoder_deps="libgsm"
2449 libgsm_ms_decoder_deps="libgsm"
2450 libgsm_ms_encoder_deps="libgsm"
2451 libilbc_decoder_deps="libilbc"
2452 libilbc_encoder_deps="libilbc"
2453 libmodplug_demuxer_deps="libmodplug"
2454 libmp3lame_encoder_deps="libmp3lame"
2455 libmp3lame_encoder_select="audio_frame_queue"
2456 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2457 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2458 libopencore_amrnb_encoder_select="audio_frame_queue"
2459 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2460 libopenh264_encoder_deps="libopenh264"
2461 libopenjpeg_decoder_deps="libopenjpeg"
2462 libopenjpeg_encoder_deps="libopenjpeg"
2463 libopus_decoder_deps="libopus"
2464 libopus_encoder_deps="libopus"
2465 libopus_encoder_select="audio_frame_queue"
2466 libquvi_demuxer_deps="libquvi"
2467 libschroedinger_decoder_deps="libschroedinger"
2468 libschroedinger_encoder_deps="libschroedinger"
2469 libshine_encoder_deps="libshine"
2470 libshine_encoder_select="audio_frame_queue"
2471 libspeex_decoder_deps="libspeex"
2472 libspeex_encoder_deps="libspeex"
2473 libspeex_encoder_select="audio_frame_queue"
2474 libstagefright_h264_decoder_deps="libstagefright_h264"
2475 libtheora_encoder_deps="libtheora"
2476 libtwolame_encoder_deps="libtwolame"
2477 libvo_aacenc_encoder_deps="libvo_aacenc"
2478 libvo_aacenc_encoder_select="audio_frame_queue"
2479 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2480 libvorbis_decoder_deps="libvorbis"
2481 libvorbis_encoder_deps="libvorbis"
2482 libvorbis_encoder_select="audio_frame_queue"
2483 libvpx_vp8_decoder_deps="libvpx"
2484 libvpx_vp8_encoder_deps="libvpx"
2485 libvpx_vp9_decoder_deps="libvpx"
2486 libvpx_vp9_encoder_deps="libvpx"
2487 libwavpack_encoder_deps="libwavpack"
2488 libwebp_encoder_deps="libwebp"
2489 libwebp_anim_encoder_deps="libwebp"
2490 libx264_encoder_deps="libx264"
2491 libx264rgb_encoder_deps="libx264"
2492 libx264rgb_encoder_select="libx264_encoder"
2493 libx265_encoder_deps="libx265"
2494 libxavs_encoder_deps="libxavs"
2495 libxvid_encoder_deps="libxvid"
2496 libutvideo_decoder_deps="libutvideo"
2497 libutvideo_encoder_deps="libutvideo"
2498 libzvbi_teletext_decoder_deps="libzvbi"
2499 nvenc_encoder_deps="nvenc"
2500 nvenc_h264_encoder_deps="nvenc"
2501 nvenc_hevc_encoder_deps="nvenc"
2502
2503 # demuxers / muxers
2504 ac3_demuxer_select="ac3_parser"
2505 asf_demuxer_select="riffdec"
2506 asf_o_demuxer_select="riffdec"
2507 asf_muxer_select="riffenc"
2508 asf_stream_muxer_select="asf_muxer"
2509 avi_demuxer_select="riffdec exif"
2510 avi_muxer_select="riffenc"
2511 avisynth_demuxer_deps="avisynth"
2512 avisynth_demuxer_select="riffdec"
2513 caf_demuxer_select="riffdec"
2514 dash_muxer_select="mp4_muxer"
2515 dirac_demuxer_select="dirac_parser"
2516 dts_demuxer_select="dca_parser"
2517 dtshd_demuxer_select="dca_parser"
2518 dv_demuxer_select="dvprofile"
2519 dv_muxer_select="dvprofile"
2520 dxa_demuxer_select="riffdec"
2521 eac3_demuxer_select="ac3_parser"
2522 f4v_muxer_select="mov_muxer"
2523 flac_demuxer_select="flac_parser"
2524 hds_muxer_select="flv_muxer"
2525 hls_muxer_select="mpegts_muxer"
2526 image2_alias_pix_demuxer_select="image2_demuxer"
2527 image2_brender_pix_demuxer_select="image2_demuxer"
2528 ipod_muxer_select="mov_muxer"
2529 ismv_muxer_select="mov_muxer"
2530 libnut_demuxer_deps="libnut"
2531 libnut_muxer_deps="libnut"
2532 matroska_audio_muxer_select="matroska_muxer"
2533 matroska_demuxer_select="riffdec"
2534 matroska_demuxer_suggest="bzlib lzo zlib"
2535 matroska_muxer_select="riffenc"
2536 mmf_muxer_select="riffenc"
2537 mov_demuxer_select="riffdec"
2538 mov_demuxer_suggest="zlib"
2539 mov_muxer_select="riffenc rtpenc_chain"
2540 mp3_demuxer_select="mpegaudio_parser"
2541 mp4_muxer_select="mov_muxer"
2542 mpegts_muxer_select="adts_muxer latm_muxer"
2543 mpegtsraw_demuxer_select="mpegts_demuxer"
2544 mxf_d10_muxer_select="mxf_muxer"
2545 mxf_opatom_muxer_select="mxf_muxer"
2546 nut_muxer_select="riffenc"
2547 nuv_demuxer_select="riffdec"
2548 oga_muxer_select="ogg_muxer"
2549 ogg_demuxer_select="golomb"
2550 opus_muxer_select="ogg_muxer"
2551 psp_muxer_select="mov_muxer"
2552 rtp_demuxer_select="sdp_demuxer"
2553 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2554 rtsp_demuxer_select="http_protocol rtpdec"
2555 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2556 sap_demuxer_select="sdp_demuxer"
2557 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2558 sdp_demuxer_select="rtpdec"
2559 smoothstreaming_muxer_select="ismv_muxer"
2560 spdif_muxer_select="aac_parser"
2561 spx_muxer_select="ogg_muxer"
2562 tak_demuxer_select="tak_parser"
2563 tg2_muxer_select="mov_muxer"
2564 tgp_muxer_select="mov_muxer"
2565 vobsub_demuxer_select="mpegps_demuxer"
2566 w64_demuxer_select="wav_demuxer"
2567 w64_muxer_select="wav_muxer"
2568 wav_demuxer_select="riffdec"
2569 wav_muxer_select="riffenc"
2570 webm_muxer_select="riffenc"
2571 wtv_demuxer_select="riffdec"
2572 wtv_muxer_select="riffenc"
2573 xmv_demuxer_select="riffdec"
2574 xwma_demuxer_select="riffdec"
2575
2576 # indevs / outdevs
2577 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2578 alsa_outdev_deps="alsa_asoundlib_h"
2579 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2580 avfoundation_indev_select="avfoundation"
2581 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2582 caca_outdev_deps="libcaca"
2583 decklink_outdev_deps="decklink pthreads"
2584 decklink_outdev_extralibs="-lstdc++"
2585 decklink_indev_deps="decklink pthreads"
2586 decklink_indev_extralibs="-lstdc++"
2587 dshow_indev_deps="IBaseFilter"
2588 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2589 dv1394_indev_deps="dv1394"
2590 dv1394_indev_select="dv_demuxer"
2591 fbdev_indev_deps="linux_fb_h"
2592 fbdev_outdev_deps="linux_fb_h"
2593 gdigrab_indev_deps="CreateDIBSection"
2594 gdigrab_indev_extralibs="-lgdi32"
2595 gdigrab_indev_select="bmp_decoder"
2596 iec61883_indev_deps="libiec61883"
2597 jack_indev_deps="jack_jack_h sem_timedwait"
2598 lavfi_indev_deps="avfilter"
2599 libcdio_indev_deps="libcdio"
2600 libdc1394_indev_deps="libdc1394"
2601 libv4l2_indev_deps="libv4l2"
2602 openal_indev_deps="openal"
2603 opengl_outdev_deps="opengl"
2604 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2605 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2606 pulse_indev_deps="libpulse"
2607 pulse_outdev_deps="libpulse"
2608 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2609 qtkit_indev_select="qtkit"
2610 sdl_outdev_deps="sdl"
2611 sndio_indev_deps="sndio_h"
2612 sndio_outdev_deps="sndio_h"
2613 v4l_indev_deps="linux_videodev_h"
2614 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2615 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2616 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2617 vfwcap_indev_extralibs="-lavicap32"
2618 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2619 xv_outdev_extralibs="-lXv -lX11 -lXext"
2620 x11grab_indev_deps="x11grab"
2621 x11grab_xcb_indev_deps="libxcb"
2622
2623 # protocols
2624 bluray_protocol_deps="libbluray"
2625 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2626 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2627 ffrtmpcrypt_protocol_select="tcp_protocol"
2628 ffrtmphttp_protocol_deps="!librtmp_protocol"
2629 ffrtmphttp_protocol_select="http_protocol"
2630 ftp_protocol_select="tcp_protocol"
2631 gopher_protocol_select="network"
2632 http_protocol_select="tcp_protocol"
2633 httpproxy_protocol_select="tcp_protocol"
2634 https_protocol_select="tls_protocol"
2635 icecast_protocol_select="http_protocol"
2636 librtmp_protocol_deps="librtmp"
2637 librtmpe_protocol_deps="librtmp"
2638 librtmps_protocol_deps="librtmp"
2639 librtmpt_protocol_deps="librtmp"
2640 librtmpte_protocol_deps="librtmp"
2641 libsmbclient_protocol_deps="libsmbclient gplv3"
2642 libssh_protocol_deps="libssh"
2643 mmsh_protocol_select="http_protocol"
2644 mmst_protocol_select="network"
2645 rtmp_protocol_deps="!librtmp_protocol"
2646 rtmp_protocol_select="tcp_protocol"
2647 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2648 rtmps_protocol_deps="!librtmp_protocol"
2649 rtmps_protocol_select="tls_protocol"
2650 rtmpt_protocol_select="ffrtmphttp_protocol"
2651 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2652 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2653 rtp_protocol_select="udp_protocol"
2654 sctp_protocol_deps="struct_sctp_event_subscribe"
2655 sctp_protocol_select="network"
2656 srtp_protocol_select="rtp_protocol"
2657 tcp_protocol_select="network"
2658 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2659 tls_gnutls_protocol_select="tcp_protocol"
2660 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2661 tls_openssl_protocol_select="tcp_protocol"
2662 tls_securetransport_protocol_deps="securetransport"
2663 tls_securetransport_protocol_select="tcp_protocol"
2664 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2665 udp_protocol_select="network"
2666 udplite_protocol_select="network"
2667 unix_protocol_deps="sys_un_h"
2668 unix_protocol_select="network"
2669
2670 # filters
2671 amovie_filter_deps="avcodec avformat"
2672 aresample_filter_deps="swresample"
2673 ass_filter_deps="libass"
2674 asyncts_filter_deps="avresample"
2675 atempo_filter_deps="avcodec"
2676 atempo_filter_select="rdft"
2677 azmq_filter_deps="libzmq"
2678 blackframe_filter_deps="gpl"
2679 boxblur_filter_deps="gpl"
2680 bs2b_filter_deps="libbs2b"
2681 colormatrix_filter_deps="gpl"
2682 cover_rect_filter_deps="avcodec avformat gpl"
2683 cropdetect_filter_deps="gpl"
2684 delogo_filter_deps="gpl"
2685 deshake_filter_select="pixelutils"
2686 drawtext_filter_deps="libfreetype"
2687 ebur128_filter_deps="gpl"
2688 eq_filter_deps="gpl"
2689 fftfilt_filter_deps="avcodec"
2690 fftfilt_filter_select="rdft"
2691 flite_filter_deps="libflite"
2692 find_rect_filter_deps="avcodec avformat gpl"
2693 frei0r_filter_deps="frei0r dlopen"
2694 frei0r_src_filter_deps="frei0r dlopen"
2695 fspp_filter_deps="gpl"
2696 geq_filter_deps="gpl"
2697 histeq_filter_deps="gpl"
2698 hqdn3d_filter_deps="gpl"
2699 interlace_filter_deps="gpl"
2700 kerndeint_filter_deps="gpl"
2701 ladspa_filter_deps="ladspa dlopen"
2702 mcdeint_filter_deps="avcodec gpl"
2703 movie_filter_deps="avcodec avformat"
2704 mpdecimate_filter_deps="gpl"
2705 mpdecimate_filter_select="pixelutils"
2706 mptestsrc_filter_deps="gpl"
2707 negate_filter_deps="lut_filter"
2708 perspective_filter_deps="gpl"
2709 pp7_filter_deps="gpl"
2710 ocv_filter_deps="libopencv"
2711 owdenoise_filter_deps="gpl"
2712 pan_filter_deps="swresample"
2713 phase_filter_deps="gpl"
2714 pp_filter_deps="gpl postproc"
2715 pullup_filter_deps="gpl"
2716 removelogo_filter_deps="avcodec avformat swscale"
2717 repeatfields_filter_deps="gpl"
2718 resample_filter_deps="avresample"
2719 sab_filter_deps="gpl swscale"
2720 scale_filter_deps="swscale"
2721 select_filter_select="pixelutils"
2722 smartblur_filter_deps="gpl swscale"
2723 showcqt_filter_deps="avcodec"
2724 showcqt_filter_select="fft"
2725 showspectrum_filter_deps="avcodec"
2726 showspectrum_filter_select="rdft"
2727 spp_filter_deps="gpl avcodec"
2728 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2729 stereo3d_filter_deps="gpl"
2730 subtitles_filter_deps="avformat avcodec libass"
2731 super2xsai_filter_deps="gpl"
2732 tinterlace_filter_deps="gpl"
2733 vidstabdetect_filter_deps="libvidstab"
2734 vidstabtransform_filter_deps="libvidstab"
2735 pixfmts_super2xsai_test_deps="super2xsai_filter"
2736 tinterlace_merge_test_deps="tinterlace_filter"
2737 tinterlace_pad_test_deps="tinterlace_filter"
2738 uspp_filter_deps="gpl avcodec"
2739 zmq_filter_deps="libzmq"
2740 zoompan_filter_deps="swscale"
2741
2742 # examples
2743 avio_reading="avformat avcodec avutil"
2744 avio_list_dir="avformat avutil"
2745 avcodec_example_deps="avcodec avutil"
2746 decoding_encoding_example_deps="avcodec avformat avutil"
2747 demuxing_decoding_example_deps="avcodec avformat avutil"
2748 extract_mvs_example_deps="avcodec avformat avutil"
2749 filter_audio_example_deps="avfilter avutil"
2750 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2751 filtering_video_example_deps="avfilter avcodec avformat avutil"
2752 metadata_example_deps="avformat avutil"
2753 muxing_example_deps="avcodec avformat avutil swscale"
2754 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2755 remuxing_example_deps="avcodec avformat avutil"
2756 resampling_audio_example_deps="avutil swresample"
2757 scaling_video_example_deps="avutil swscale"
2758 transcode_aac_example_deps="avcodec avformat swresample"
2759 transcoding_example_deps="avfilter avcodec avformat avutil"
2760
2761 # libraries, in linking order
2762 avcodec_deps="avutil"
2763 avdevice_deps="avformat avcodec avutil"
2764 avfilter_deps="avutil"
2765 avformat_deps="avcodec avutil"
2766 avresample_deps="avutil"
2767 postproc_deps="avutil gpl"
2768 swresample_deps="avutil"
2769 swscale_deps="avutil"
2770
2771 # programs
2772 ffmpeg_deps="avcodec avfilter avformat swresample"
2773 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2774                null_filter
2775                setpts_filter trim_filter"
2776 ffplay_deps="avcodec avformat swscale swresample sdl"
2777 ffplay_libs='$sdl_libs'
2778 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2779 ffprobe_deps="avcodec avformat"
2780 ffserver_deps="avformat fork sarestart"
2781 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2782
2783 # documentation
2784 podpages_deps="perl"
2785 manpages_deps="perl pod2man"
2786 htmlpages_deps="perl"
2787 htmlpages_deps_any="makeinfo_html texi2html"
2788 txtpages_deps="perl makeinfo"
2789 doc_deps_any="manpages htmlpages podpages txtpages"
2790
2791 # default parameters
2792
2793 logfile="config.log"
2794
2795 # installation paths
2796 prefix_default="/usr/local"
2797 bindir_default='${prefix}/bin'
2798 datadir_default='${prefix}/share/ffmpeg'
2799 docdir_default='${prefix}/share/doc/ffmpeg'
2800 incdir_default='${prefix}/include'
2801 libdir_default='${prefix}/lib'
2802 mandir_default='${prefix}/share/man'
2803
2804 # toolchain
2805 ar_default="ar"
2806 cc_default="gcc"
2807 cxx_default="g++"
2808 host_cc_default="gcc"
2809 cp_f="cp -f"
2810 doxygen_default="doxygen"
2811 install="install"
2812 ln_s="ln -s -f"
2813 nm_default="nm -g"
2814 objformat="elf"
2815 pkg_config_default=pkg-config
2816 ranlib_default="ranlib"
2817 strip_default="strip"
2818 yasmexe_default="yasm"
2819 windres_default="windres"
2820
2821 # OS
2822 target_os_default=$(tolower $(uname -s))
2823 host_os=$target_os_default
2824
2825 # machine
2826 if test "$target_os_default" = aix; then
2827     arch_default=$(uname -p)
2828     strip_default="strip -X32_64"
2829 else
2830     arch_default=$(uname -m)
2831 fi
2832 cpu="generic"
2833 intrinsics="none"
2834
2835 # configurable options
2836 enable $PROGRAM_LIST
2837 enable $DOCUMENT_LIST
2838 enable $EXAMPLE_LIST
2839 enable $(filter_out avresample $LIBRARY_LIST)
2840 enable stripping
2841
2842 enable asm
2843 enable debug
2844 enable doc
2845 enable faan faandct faanidct
2846 enable optimizations
2847 enable runtime_cpudetect
2848 enable safe_bitstream_reader
2849 enable static
2850 enable swscale_alpha
2851 enable valgrind_backtrace
2852
2853 sws_max_filter_size_default=256
2854 set_default sws_max_filter_size
2855
2856 # Enable hwaccels by default.
2857 enable d3d11va dxva2 vaapi vda vdpau xvmc
2858 enable xlib
2859
2860 # build settings
2861 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2862 LIBPREF="lib"
2863 LIBSUF=".a"
2864 FULLNAME='$(NAME)$(BUILDSUF)'
2865 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2866 SLIBPREF="lib"
2867 SLIBSUF=".so"
2868 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2869 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2870 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2871 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2872 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2873 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2874
2875 asflags_filter=echo
2876 cflags_filter=echo
2877 ldflags_filter=echo
2878
2879 AS_C='-c'
2880 AS_O='-o $@'
2881 CC_C='-c'
2882 CC_E='-E -o $@'
2883 CC_O='-o $@'
2884 CXX_C='-c'
2885 CXX_O='-o $@'
2886 LD_O='-o $@'
2887 LD_LIB='-l%'
2888 LD_PATH='-L'
2889 HOSTCC_C='-c'
2890 HOSTCC_E='-E -o $@'
2891 HOSTCC_O='-o $@'
2892 HOSTLD_O='-o $@'
2893
2894 host_libs='-lm'
2895 host_cflags_filter=echo
2896 host_ldflags_filter=echo
2897
2898 target_path='$(CURDIR)'
2899
2900 # since the object filename is not given with the -MM flag, the compiler
2901 # is only able to print the basename, and we must add the path ourselves
2902 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2903 DEPFLAGS='-MM'
2904
2905 # find source path
2906 if test -f configure; then
2907     source_path=.
2908 else
2909     source_path=$(cd $(dirname "$0"); pwd)
2910     echo "$source_path" | grep -q '[[:blank:]]' &&
2911         die "Out of tree builds are impossible with whitespace in source path."
2912     test -e "$source_path/config.h" &&
2913         die "Out of tree builds are impossible with config.h in source dir."
2914 fi
2915
2916 for v in "$@"; do
2917     r=${v#*=}
2918     l=${v%"$r"}
2919     r=$(sh_quote "$r")
2920     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2921 done
2922
2923 find_things(){
2924     thing=$1
2925     pattern=$2
2926     file=$source_path/$3
2927     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2928 }
2929
2930 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2931 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2932 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2933 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2934 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2935 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2936 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2937 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2938 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2939 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2940 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2941
2942 ALL_COMPONENTS="
2943     $BSF_LIST
2944     $DECODER_LIST
2945     $DEMUXER_LIST
2946     $ENCODER_LIST
2947     $FILTER_LIST
2948     $HWACCEL_LIST
2949     $INDEV_LIST
2950     $MUXER_LIST
2951     $OUTDEV_LIST
2952     $PARSER_LIST
2953     $PROTOCOL_LIST
2954 "
2955
2956 for n in $COMPONENT_LIST; do
2957     v=$(toupper ${n%s})_LIST
2958     eval enable \$$v
2959     eval ${n}_if_any="\$$v"
2960 done
2961
2962 enable $ARCH_EXT_LIST
2963
2964 die_unknown(){
2965     echo "Unknown option \"$1\"."
2966     echo "See $0 --help for available options."
2967     exit 1
2968 }
2969
2970 print_3_columns() {
2971     cat | tr ' ' '\n' | sort | pr -r -3 -t
2972 }
2973
2974 show_list() {
2975     suffix=_$1
2976     shift
2977     echo $* | sed s/$suffix//g | print_3_columns
2978     exit 0
2979 }
2980
2981 rand_list(){
2982     IFS=', '
2983     set -- $*
2984     unset IFS
2985     for thing; do
2986         comp=${thing%:*}
2987         prob=${thing#$comp}
2988         prob=${prob#:}
2989         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2990         echo "prob ${prob:-0.5}"
2991         printf '%s\n' $comp
2992     done
2993 }
2994
2995 do_random(){
2996     action=$1
2997     shift
2998     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2999     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3000 }
3001
3002 for opt do
3003     optval="${opt#*=}"
3004     case "$opt" in
3005         --extra-ldflags=*)
3006             add_ldflags $optval
3007         ;;
3008         --extra-ldexeflags=*)
3009             add_ldexeflags $optval
3010         ;;
3011         --extra-libs=*)
3012             add_extralibs $optval
3013         ;;
3014         --disable-devices)
3015             disable $INDEV_LIST $OUTDEV_LIST
3016         ;;
3017         --enable-debug=*)
3018             debuglevel="$optval"
3019         ;;
3020         --disable-programs)
3021             disable $PROGRAM_LIST
3022         ;;
3023         --disable-everything)
3024             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3025         ;;
3026         --disable-all)
3027             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3028             disable $LIBRARY_LIST $PROGRAM_LIST doc
3029         ;;
3030         --enable-random|--disable-random)
3031             action=${opt%%-random}
3032             do_random ${action#--} $COMPONENT_LIST
3033         ;;
3034         --enable-random=*|--disable-random=*)
3035             action=${opt%%-random=*}
3036             do_random ${action#--} $optval
3037         ;;
3038         --enable-*=*|--disable-*=*)
3039             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3040             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3041             eval list=\$$(toupper $thing)_LIST
3042             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3043             list=$(filter "$name" $list)
3044             [ "$list" = "" ] && warn "Option $opt did not match anything"
3045             $action $list
3046         ;;
3047         --enable-?*|--disable-?*)
3048             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3049             if is_in $option $COMPONENT_LIST; then
3050                 test $action = disable && action=unset
3051                 eval $action \$$(toupper ${option%s})_LIST
3052             elif is_in $option $CMDLINE_SELECT; then
3053                 $action $option
3054             else
3055                 die_unknown $opt
3056             fi
3057         ;;
3058         --list-*)
3059             NAME="${opt#--list-}"
3060             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3061             NAME=${NAME%s}
3062             eval show_list $NAME \$$(toupper $NAME)_LIST
3063         ;;
3064         --help|-h) show_help
3065         ;;
3066         --fatal-warnings) enable fatal_warnings
3067         ;;
3068         *)
3069             optname="${opt%%=*}"
3070             optname="${optname#--}"
3071             optname=$(echo "$optname" | sed 's/-/_/g')
3072             if is_in $optname $CMDLINE_SET; then
3073                 eval $optname='$optval'
3074             elif is_in $optname $CMDLINE_APPEND; then
3075                 append $optname "$optval"
3076             else
3077                 die_unknown $opt
3078             fi
3079         ;;
3080     esac
3081 done
3082
3083 for e in $env; do
3084     eval "export $e"
3085 done
3086
3087 disabled logging && logfile=/dev/null
3088
3089 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3090 set >> $logfile
3091
3092 test -n "$valgrind" && toolchain="valgrind-memcheck"
3093
3094 case "$toolchain" in
3095     clang-asan)
3096         cc_default="clang"
3097         add_cflags  -fsanitize=address
3098         add_ldflags -fsanitize=address
3099     ;;
3100     clang-tsan)
3101         cc_default="clang"
3102         add_cflags  -fsanitize=thread -pie
3103         add_ldflags -fsanitize=thread -pie
3104     ;;
3105     clang-usan)
3106         cc_default="clang"
3107         add_cflags  -fsanitize=undefined
3108         add_ldflags -fsanitize=undefined
3109     ;;
3110     gcc-asan)
3111         cc_default="gcc"
3112         add_cflags  -fsanitize=address
3113         add_ldflags -fsanitize=address
3114     ;;
3115     gcc-tsan)
3116         cc_default="gcc"
3117         add_cflags  -fsanitize=thread -pie -fPIC
3118         add_ldflags -fsanitize=thread -pie -fPIC
3119     ;;
3120     gcc-usan)
3121         cc_default="gcc"
3122         add_cflags  -fsanitize=undefined
3123         add_ldflags -fsanitize=undefined
3124     ;;
3125     valgrind-massif)
3126         target_exec_default=${valgrind:-"valgrind"}
3127         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"
3128     ;;
3129     valgrind-memcheck)
3130         target_exec_default=${valgrind:-"valgrind"}
3131         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3132     ;;
3133     msvc)
3134         # Check whether the current MSVC version needs the C99 converter.
3135         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3136         # support enough of C99 to build ffmpeg. Default to the new
3137         # behaviour if the regexp was unable to match anything, since this
3138         # successfully parses the version number of existing supported
3139         # versions that require the converter (MSVC 2010 and 2012).
3140         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3141         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3142             cc_default="cl"
3143         else
3144             cc_default="c99wrap cl"
3145         fi
3146         ld_default="link"
3147         nm_default="dumpbin -symbols"
3148         ar_default="lib"
3149         target_os_default="win32"
3150         # Use a relative path for TMPDIR. This makes sure all the
3151         # ffconf temp files are written with a relative path, avoiding
3152         # issues with msys/win32 path conversion for MSVC parameters
3153         # such as -Fo<file> or -out:<file>.
3154         TMPDIR=.
3155     ;;
3156     icl)
3157         cc_default="icl"
3158         ld_default="xilink"
3159         nm_default="dumpbin -symbols"
3160         ar_default="xilib"
3161         target_os_default="win32"
3162         TMPDIR=.
3163     ;;
3164     gcov)
3165         add_cflags  -fprofile-arcs -ftest-coverage
3166         add_ldflags -fprofile-arcs -ftest-coverage
3167     ;;
3168     hardened)
3169         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3170         add_cflags   -fno-strict-overflow -fstack-protector-all
3171         add_ldflags  -Wl,-z,relro -Wl,-z,now
3172     ;;
3173     ?*)
3174         die "Unknown toolchain $toolchain"
3175     ;;
3176 esac
3177
3178 test -n "$cross_prefix" && enable cross_compile
3179
3180 if enabled cross_compile; then
3181     test -n "$arch" && test -n "$target_os" ||
3182         die "Must specify target arch and OS when cross-compiling"
3183 fi
3184
3185 ar_default="${cross_prefix}${ar_default}"
3186 cc_default="${cross_prefix}${cc_default}"
3187 cxx_default="${cross_prefix}${cxx_default}"
3188 nm_default="${cross_prefix}${nm_default}"
3189 pkg_config_default="${cross_prefix}${pkg_config_default}"
3190 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3191     ranlib_default="${cross_prefix}${ranlib_default} -D"
3192 else
3193     ranlib_default="${cross_prefix}${ranlib_default}"
3194 fi
3195 strip_default="${cross_prefix}${strip_default}"
3196 windres_default="${cross_prefix}${windres_default}"
3197
3198 sysinclude_default="${sysroot}/usr/include"
3199
3200 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3201     target_exec target_os yasmexe
3202 enabled cross_compile || host_cc_default=$cc
3203 set_default host_cc
3204
3205 pkg_config_fail_message=""
3206 if ! $pkg_config --version >/dev/null 2>&1; then
3207     warn "$pkg_config not found, library detection may fail."
3208     pkg_config=false
3209 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3210     pkg_config_fail_message="
3211 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3212 fi
3213
3214 if test $doxygen != $doxygen_default && \
3215   ! $doxygen --version >/dev/null 2>&1; then
3216     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3217 fi
3218
3219 exesuf() {
3220     case $1 in
3221         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3222     esac
3223 }
3224
3225 EXESUF=$(exesuf $target_os)
3226 HOSTEXESUF=$(exesuf $host_os)
3227
3228 # set temporary file name
3229 : ${TMPDIR:=$TEMPDIR}
3230 : ${TMPDIR:=$TMP}
3231 : ${TMPDIR:=/tmp}
3232
3233 if [ -n "$tempprefix" ] ; then
3234     mktemp(){
3235         echo $tempprefix.${HOSTNAME}.${UID}
3236     }
3237 elif ! check_cmd mktemp -u XXXXXX; then
3238     # simple replacement for missing mktemp
3239     # NOT SAFE FOR GENERAL USE
3240     mktemp(){
3241         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3242     }
3243 fi
3244
3245 tmpfile(){
3246     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3247         (set -C; exec > $tmp) 2>/dev/null ||
3248         die "Unable to create temporary file in $TMPDIR."
3249     append TMPFILES $tmp
3250     eval $1=$tmp
3251 }
3252
3253 trap 'rm -f -- $TMPFILES' EXIT
3254
3255 tmpfile TMPASM .asm
3256 tmpfile TMPC   .c
3257 tmpfile TMPCPP .cpp
3258 tmpfile TMPE   $EXESUF
3259 tmpfile TMPH   .h
3260 tmpfile TMPM   .m
3261 tmpfile TMPO   .o
3262 tmpfile TMPS   .S
3263 tmpfile TMPSH  .sh
3264 tmpfile TMPV   .ver
3265
3266 unset -f mktemp
3267
3268 chmod +x $TMPE
3269
3270 # make sure we can execute files in $TMPDIR
3271 cat > $TMPSH 2>> $logfile <<EOF
3272 #! /bin/sh
3273 EOF
3274 chmod +x $TMPSH >> $logfile 2>&1
3275 if ! $TMPSH >> $logfile 2>&1; then
3276     cat <<EOF
3277 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3278 variable to another directory and make sure that it is not mounted noexec.
3279 EOF
3280     die "Sanity test failed."
3281 fi
3282
3283 armasm_flags(){
3284     for flag; do
3285         case $flag in
3286             # Filter out MSVC cl.exe options from cflags that shouldn't
3287             # be passed to gas-preprocessor
3288             -M[TD]*)                                            ;;
3289             *)                  echo $flag                      ;;
3290         esac
3291    done
3292 }
3293
3294 ccc_flags(){
3295     for flag; do
3296         case $flag in
3297             -std=c99)           echo -c99                       ;;
3298             -mcpu=*)            echo -arch ${flag#*=}           ;;
3299             -mieee)             echo -ieee                      ;;
3300             -O*|-fast)          echo $flag                      ;;
3301             -fno-math-errno)    echo -assume nomath_errno       ;;
3302             -g)                 echo -g3                        ;;
3303             -Wall)              echo -msg_enable level2         ;;
3304             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3305             -Wl,*)              echo $flag                      ;;
3306             -f*|-W*)                                            ;;
3307             *)                  echo $flag                      ;;
3308         esac
3309    done
3310 }
3311
3312 cparser_flags(){
3313     for flag; do
3314         case $flag in
3315             -Wno-switch)             echo -Wno-switch-enum ;;
3316             -Wno-format-zero-length) ;;
3317             -Wdisabled-optimization) ;;
3318             -Wno-pointer-sign)       echo -Wno-other ;;
3319             *)                       echo $flag ;;
3320         esac
3321     done
3322 }
3323
3324 msvc_common_flags(){
3325     for flag; do
3326         case $flag in
3327             # In addition to specifying certain flags under the compiler
3328             # specific filters, they must be specified here as well or else the
3329             # generic catch all at the bottom will print the original flag.
3330             -Wall)                ;;
3331             -std=c99)             ;;
3332             # Common flags
3333             -fomit-frame-pointer) ;;
3334             -g)                   echo -Z7 ;;
3335             -fno-math-errno)      ;;
3336             -fno-common)          ;;
3337             -fno-signed-zeros)    ;;
3338             -fPIC)                ;;
3339             -mthumb)              ;;
3340             -march=*)             ;;
3341             -lz)                  echo zlib.lib ;;
3342             -lavifil32)           echo vfw32.lib ;;
3343             -lavicap32)           echo vfw32.lib user32.lib ;;
3344             -l*)                  echo ${flag#-l}.lib ;;
3345             -L*)                  echo -libpath:${flag#-L} ;;
3346             *)                    echo $flag ;;
3347         esac
3348     done
3349 }
3350
3351 msvc_flags(){
3352     msvc_common_flags "$@"
3353     for flag; do
3354         case $flag in
3355             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3356                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3357                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3358                                        -wd4307 \
3359                                        -wd4273 -wd4554 -wd4701 ;;
3360         esac
3361     done
3362 }
3363
3364 icl_flags(){
3365     msvc_common_flags "$@"
3366     for flag; do
3367         case $flag in
3368             # Despite what Intel's documentation says -Wall, which is supported
3369             # on Windows, does enable remarks so disable them here.
3370             -Wall)                echo $flag -Qdiag-disable:remark ;;
3371             -std=c99)             echo -Qstd=c99 ;;
3372             -flto)                echo -ipo ;;
3373         esac
3374     done
3375 }
3376
3377 icc_flags(){
3378     for flag; do
3379         case $flag in
3380             -flto)                echo -ipo ;;
3381             *)                    echo $flag ;;
3382         esac
3383     done
3384 }
3385
3386 pgi_flags(){
3387     for flag; do
3388         case $flag in
3389             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3390             -fomit-frame-pointer) echo -Mnoframe ;;
3391             -g)                   echo -gopt ;;
3392             *)                    echo $flag ;;
3393         esac
3394     done
3395 }
3396
3397 suncc_flags(){
3398     for flag; do
3399         case $flag in
3400             -march=*|-mcpu=*)
3401                 case "${flag#*=}" in
3402                     native)                   echo -xtarget=native       ;;
3403                     v9|niagara)               echo -xarch=sparc          ;;
3404                     ultrasparc)               echo -xarch=sparcvis       ;;
3405                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3406                     i586|pentium)             echo -xchip=pentium        ;;
3407                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3408                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3409                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3410                     pentium4*)          echo -xtarget=pentium4           ;;
3411                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3412                     *-sse3)             echo -xarch=sse3                 ;;
3413                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3414                     bonnell)                   echo -xarch=ssse3         ;;
3415                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3416                     westmere)                  echo -xtarget=westmere    ;;
3417                     silvermont)                echo -xarch=sse4_2        ;;
3418                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3419                     core-avx*|ivybridge|haswell|broadwell)
3420                                                echo -xarch=avx           ;;
3421                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3422                     btver1)                    echo -xarch=amdsse4a      ;;
3423                     btver2|bdver*)             echo -xarch=avx           ;;
3424                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3425                     k8|opteron|athlon64|athlon-fx)
3426                                                echo -xarch=sse2a         ;;
3427                     athlon*)                   echo -xarch=pentium_proa  ;;
3428                 esac
3429                 ;;
3430             -std=c99)             echo -xc99              ;;
3431             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3432             -fPIC)                echo -KPIC -xcode=pic32 ;;
3433             -W*,*)                echo $flag              ;;
3434             -f*-*|-W*|-mimpure-text)                      ;;
3435             -shared)              echo -G                 ;;
3436             *)                    echo $flag              ;;
3437         esac
3438     done
3439 }
3440
3441 tms470_flags(){
3442     for flag; do
3443         case $flag in
3444             -march=*|-mcpu=*)
3445                 case "${flag#*=}" in
3446                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3447                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3448                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3449                     armv6*|arm11*)          echo -mv=6   ;;
3450                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3451                                             echo -mv=5e  ;;
3452                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3453                 esac
3454                 ;;
3455             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3456             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3457             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3458             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3459             -msoft-float)   echo --float_support=vfplib       ;;
3460             -O[0-3]|-mf=*)  echo $flag                        ;;
3461             -g)             echo -g -mn                       ;;
3462             -pds=*)         echo $flag                        ;;
3463             -D*|-I*)        echo $flag                        ;;
3464             --gcc|--abi=*)  echo $flag                        ;;
3465             -me)            echo $flag                        ;;
3466         esac
3467     done
3468 }
3469
3470 probe_cc(){
3471     pfx=$1
3472     _cc=$2
3473
3474     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3475     unset _ld_o _ldflags _ld_lib _ld_path
3476     unset _depflags _DEPCMD _DEPFLAGS
3477     _flags_filter=echo
3478
3479     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3480         true # no-op to avoid reading stdin in following checks
3481     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3482         _type=llvm_gcc
3483         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3484         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3485         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3486         _cflags_speed='-O3'
3487         _cflags_size='-Os'
3488     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3489         _type=gcc
3490         gcc_version=$($_cc --version | head -n1)
3491         gcc_basever=$($_cc -dumpversion)
3492         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3493         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3494         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3495         if ! $_cc -dumpversion | grep -q '^2\.'; then
3496             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3497         fi
3498         _cflags_speed='-O3'
3499         _cflags_size='-Os'
3500     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3501         _type=icc
3502         _ident=$($_cc --version | head -n1)
3503         _depflags='-MMD'
3504         _cflags_speed='-O3'
3505         _cflags_size='-Os'
3506         _cflags_noopt='-O1'
3507         _flags_filter=icc_flags
3508     elif $_cc -v 2>&1 | grep -q xlc; then
3509         _type=xlc
3510         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3511         _cflags_speed='-O5'
3512         _cflags_size='-O5 -qcompact'
3513     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3514         _type=ccc
3515         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3516         _DEPFLAGS='-M'
3517         _cflags_speed='-fast'
3518         _cflags_size='-O1'
3519         _flags_filter=ccc_flags
3520     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3521         test -d "$sysroot" || die "No valid sysroot specified."
3522         _type=armcc
3523         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3524         armcc_conf="$PWD/armcc.conf"
3525         $_cc --arm_linux_configure                 \
3526              --arm_linux_config_file="$armcc_conf" \
3527              --configure_sysroot="$sysroot"        \
3528              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3529              die "Error creating armcc configuration file."
3530         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3531         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3532         as_default="${cross_prefix}gcc"
3533         _depflags='-MMD'
3534         _cflags_speed='-O3'
3535         _cflags_size='-Os'
3536     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3537         _type=tms470
3538         _ident=$($_cc -version | head -n1 | tr -s ' ')
3539         _flags='--gcc --abi=eabi -me'
3540         _cc_e='-ppl -fe=$@'
3541         _cc_o='-fe=$@'
3542         _depflags='-ppa -ppd=$(@:.o=.d)'
3543         _cflags_speed='-O3 -mf=5'
3544         _cflags_size='-O3 -mf=2'
3545         _flags_filter=tms470_flags
3546     elif $_cc -v 2>&1 | grep -q clang; then
3547         _type=clang
3548         _ident=$($_cc --version | head -n1)
3549         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3550         _cflags_speed='-O3'
3551         _cflags_size='-Os'
3552     elif $_cc -V 2>&1 | grep -q Sun; then
3553         _type=suncc
3554         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3555         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3556         _DEPFLAGS='-xM1 -xc99'
3557         _ldflags='-std=c99'
3558         _cflags_speed='-O5'
3559         _cflags_size='-O5 -xspace'
3560         _flags_filter=suncc_flags
3561     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3562         _type=pathscale
3563         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3564         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3565         _cflags_speed='-O2'
3566         _cflags_size='-Os'
3567         _flags_filter='filter_out -Wdisabled-optimization'
3568     elif $_cc -v 2>&1 | grep -q Open64; then
3569         _type=open64
3570         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3571         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3572         _cflags_speed='-O2'
3573         _cflags_size='-Os'
3574         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3575     elif $_cc -V 2>&1 | grep -q Portland; then
3576         _type=pgi
3577         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3578         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3579         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3580         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3581         _cflags_noopt="-O"
3582         _flags_filter=pgi_flags
3583     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3584         _type=armasm
3585         _ident=$($_cc | head -n1)
3586         # 4509: "This form of conditional instruction is deprecated"
3587         _flags="-nologo -ignore 4509"
3588         _flags_filter=armasm_flags
3589     elif $_cc 2>&1 | grep -q Intel; then
3590         _type=icl
3591         _ident=$($_cc 2>&1 | head -n1)
3592         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3593         # Not only is O3 broken on 13.x+ but it is slower on all previous
3594         # versions (tested) as well.
3595         _cflags_speed="-O2"
3596         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3597         if $_cc 2>&1 | grep -q Linker; then
3598             _ld_o='-out:$@'
3599         else
3600             _ld_o='-Fe$@'
3601         fi
3602         _cc_o='-Fo$@'
3603         _cc_e='-P'
3604         _flags_filter=icl_flags
3605         _ld_lib='lib%.a'
3606         _ld_path='-libpath:'
3607         # -Qdiag-error to make icl error when seeing certain unknown arguments
3608         _flags='-nologo -Qdiag-error:4044,10157'
3609         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3610         # with MSVC which enables it by default.
3611         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3612         disable stripping
3613     elif $_cc 2>&1 | grep -q Microsoft; then
3614         _type=msvc
3615         _ident=$($_cc 2>&1 | head -n1)
3616         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3617         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3618         _cflags_speed="-O2"
3619         _cflags_size="-O1"
3620         if $_cc 2>&1 | grep -q Linker; then
3621             _ld_o='-out:$@'
3622         else
3623             _ld_o='-Fe$@'
3624         fi
3625         _cc_o='-Fo$@'
3626         _cc_e='-P -Fi$@'
3627         _flags_filter=msvc_flags
3628         _ld_lib='lib%.a'
3629         _ld_path='-libpath:'
3630         _flags='-nologo'
3631         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3632         disable stripping
3633     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3634         _type=cparser
3635         _ident=$($_cc --version | head -n1)
3636         _depflags='-MMD'
3637         _cflags_speed='-O4'
3638         _cflags_size='-O2'
3639         _flags_filter=cparser_flags
3640     fi
3641
3642     eval ${pfx}_type=\$_type
3643     eval ${pfx}_ident=\$_ident
3644 }
3645
3646 set_ccvars(){
3647     eval ${1}_C=\${_cc_c-\${${1}_C}}
3648     eval ${1}_E=\${_cc_e-\${${1}_E}}
3649     eval ${1}_O=\${_cc_o-\${${1}_O}}
3650
3651     if [ -n "$_depflags" ]; then
3652         eval ${1}_DEPFLAGS=\$_depflags
3653     else
3654         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3655         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3656         eval DEP${1}FLAGS=\$_flags
3657     fi
3658 }
3659
3660 probe_cc cc "$cc"
3661 cflags_filter=$_flags_filter
3662 cflags_speed=$_cflags_speed
3663 cflags_size=$_cflags_size
3664 cflags_noopt=$_cflags_noopt
3665 add_cflags $_flags $_cflags
3666 cc_ldflags=$_ldflags
3667 set_ccvars CC
3668
3669 probe_cc hostcc "$host_cc"
3670 host_cflags_filter=$_flags_filter
3671 add_host_cflags  $_flags $_cflags
3672 set_ccvars HOSTCC
3673
3674 test -n "$cc_type" && enable $cc_type ||
3675     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3676
3677 : ${as_default:=$cc}
3678 : ${dep_cc_default:=$cc}
3679 : ${ld_default:=$cc}
3680 : ${host_ld_default:=$host_cc}
3681 set_default ar as dep_cc ld host_ld windres
3682
3683 probe_cc as "$as"
3684 asflags_filter=$_flags_filter
3685 add_asflags $_flags $_cflags
3686 set_ccvars AS
3687
3688 probe_cc ld "$ld"
3689 ldflags_filter=$_flags_filter
3690 add_ldflags $_flags $_ldflags
3691 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3692 LD_O=${_ld_o-$LD_O}
3693 LD_LIB=${_ld_lib-$LD_LIB}
3694 LD_PATH=${_ld_path-$LD_PATH}
3695
3696 probe_cc hostld "$host_ld"
3697 host_ldflags_filter=$_flags_filter
3698 add_host_ldflags $_flags $_ldflags
3699 HOSTLD_O=${_ld_o-$HOSTLD_O}
3700
3701 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3702     probe_cc depcc "$dep_cc"
3703     CCDEP=${_DEPCMD:-$DEPCMD}
3704     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3705     DEPCCFLAGS=$_flags
3706 fi
3707
3708 if $ar 2>&1 | grep -q Microsoft; then
3709     arflags="-nologo"
3710     ar_o='-out:$@'
3711 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3712     arflags="rq"
3713     ar_o='$@'
3714 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3715     arflags='-Xany -r -c'
3716     ar_o='$@'
3717 elif $ar 2>&1 | grep -q "\[D\] "; then
3718     arflags="rcD"
3719     ar_o='$@'
3720 else
3721     arflags="rc"
3722     ar_o='$@'
3723 fi
3724
3725 add_cflags $extra_cflags
3726 add_cxxflags $extra_cxxflags
3727 add_asflags $extra_cflags
3728
3729 if test -n "$sysroot"; then
3730     case "$cc_type" in
3731         gcc|llvm_gcc|clang)
3732             add_cppflags --sysroot="$sysroot"
3733             add_ldflags --sysroot="$sysroot"
3734 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3735             add_cppflags -isysroot "$sysroot"
3736             add_ldflags -isysroot "$sysroot"
3737         ;;
3738         tms470)
3739             add_cppflags -I"$sysinclude"
3740             add_ldflags  --sysroot="$sysroot"
3741         ;;
3742     esac
3743 fi
3744
3745 if test "$cpu" = host; then
3746     enabled cross_compile &&
3747         die "--cpu=host makes no sense when cross-compiling."
3748
3749     case "$cc_type" in
3750         gcc|llvm_gcc)
3751             check_native(){
3752                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3753                 sed -n "/cc1.*$1=/{
3754                             s/.*$1=\\([^ ]*\\).*/\\1/
3755                             p
3756                             q
3757                         }" $TMPE
3758             }
3759             cpu=$(check_native -march || check_native -mcpu)
3760         ;;
3761     esac
3762
3763     test "${cpu:-host}" = host &&
3764         die "--cpu=host not supported with compiler $cc"
3765 fi
3766
3767 # Deal with common $arch aliases
3768 case "$arch" in
3769     aarch64|arm64)
3770         arch="aarch64"
3771     ;;
3772     arm*|iPad*|iPhone*)
3773         arch="arm"
3774     ;;
3775     mips*|IP*)
3776         arch="mips"
3777     ;;
3778     parisc*|hppa*)
3779         arch="parisc"
3780     ;;
3781     "Power Macintosh"|ppc*|powerpc*)
3782         arch="ppc"
3783     ;;
3784     s390|s390x)
3785         arch="s390"
3786     ;;
3787     sh4|sh)
3788         arch="sh4"
3789     ;;
3790     sun4u|sparc*)
3791         arch="sparc"
3792     ;;
3793     tilegx|tile-gx)
3794         arch="tilegx"
3795     ;;
3796     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3797         arch="x86"
3798     ;;
3799 esac
3800
3801 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3802 enable $arch
3803
3804 # Add processor-specific flags
3805 if enabled aarch64; then
3806
3807     case $cpu in
3808         armv*)
3809             cpuflags="-march=$cpu"
3810         ;;
3811         *)
3812             cpuflags="-mcpu=$cpu"
3813         ;;
3814     esac
3815
3816 elif enabled alpha; then
3817
3818     cpuflags="-mcpu=$cpu"
3819
3820 elif enabled arm; then
3821
3822     check_arm_arch() {
3823         check_cpp_condition stddef.h \
3824             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3825             $cpuflags
3826     }
3827
3828     probe_arm_arch() {
3829         if   check_arm_arch 4;        then echo armv4;
3830         elif check_arm_arch 4T;       then echo armv4t;
3831         elif check_arm_arch 5;        then echo armv5;
3832         elif check_arm_arch 5E;       then echo armv5e;
3833         elif check_arm_arch 5T;       then echo armv5t;
3834         elif check_arm_arch 5TE;      then echo armv5te;
3835         elif check_arm_arch 5TEJ;     then echo armv5te;
3836         elif check_arm_arch 6;        then echo armv6;
3837         elif check_arm_arch 6J;       then echo armv6j;
3838         elif check_arm_arch 6K;       then echo armv6k;
3839         elif check_arm_arch 6Z;       then echo armv6z;
3840         elif check_arm_arch 6ZK;      then echo armv6zk;
3841         elif check_arm_arch 6T2;      then echo armv6t2;
3842         elif check_arm_arch 7;        then echo armv7;
3843         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3844         elif check_arm_arch 7S;       then echo armv7-a;
3845         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3846         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3847         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3848         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3849         fi
3850     }
3851
3852     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3853
3854     case $cpu in
3855         armv*)
3856             cpuflags="-march=$cpu"
3857             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3858         ;;
3859         *)
3860             cpuflags="-mcpu=$cpu"
3861             case $cpu in
3862                 cortex-a*)                               subarch=armv7a  ;;
3863                 cortex-r*)                               subarch=armv7r  ;;
3864                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3865                 arm11*)                                  subarch=armv6   ;;
3866                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3867                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3868                 *)                             subarch=$(probe_arm_arch) ;;
3869             esac
3870         ;;
3871     esac
3872
3873     case "$subarch" in
3874         armv5t*)    enable fast_clz                ;;
3875         armv[6-8]*)
3876             enable fast_clz
3877             disabled fast_unaligned || enable fast_unaligned
3878             ;;
3879     esac
3880
3881 elif enabled avr32; then
3882
3883     case $cpu in
3884         ap7[02]0[0-2])
3885             subarch="avr32_ap"
3886             cpuflags="-mpart=$cpu"
3887         ;;
3888         ap)
3889             subarch="avr32_ap"
3890             cpuflags="-march=$cpu"
3891         ;;
3892         uc3[ab]*)
3893             subarch="avr32_uc"
3894             cpuflags="-mcpu=$cpu"
3895         ;;
3896         uc)
3897             subarch="avr32_uc"
3898             cpuflags="-march=$cpu"
3899         ;;
3900     esac
3901
3902 elif enabled bfin; then
3903
3904     cpuflags="-mcpu=$cpu"
3905
3906 elif enabled mips; then
3907
3908     cpuflags="-march=$cpu"
3909
3910     case $cpu in
3911         24kc)
3912             disable mips32r5
3913             disable mips64r6
3914             disable mipsfpu
3915             disable mipsdspr1
3916             disable mipsdspr2
3917             disable msa
3918         ;;
3919         24kf*)
3920             disable mips32r5
3921             disable mips64r6
3922             disable mipsdspr1
3923             disable mipsdspr2
3924             disable msa
3925         ;;
3926         24kec|34kc|1004kc)
3927             disable mips32r5
3928             disable mips64r6
3929             disable mipsfpu
3930             disable mipsdspr2
3931             disable msa
3932         ;;
3933         24kef*|34kf*|1004kf*)
3934             disable mips32r5
3935             disable mips64r6
3936             disable mipsdspr2
3937             disable msa
3938         ;;
3939         74kc)
3940             disable mips32r5
3941             disable mips64r6
3942             disable mipsfpu
3943             disable msa
3944         ;;
3945         74kf)
3946             disable mips32r5
3947             disable mips64r6
3948             disable msa
3949         ;;
3950         p5600)
3951             disable mips64r6
3952             disable mipsdspr1
3953             disable mipsdspr2
3954
3955             check_cflags "-mtune=p5600"
3956         ;;
3957         i6400)
3958             disable mips32r5
3959             disable mipsdspr1
3960             disable mipsdspr2
3961             disable mipsfpu
3962
3963             check_cflags "-mtune=i6400 -mabi=64"
3964             check_ldflags "-mabi=64"
3965         ;;
3966         loongson3*)
3967             disable mipsfpu
3968             disable mips32r2
3969             disable mips32r5
3970             disable mips64r6
3971             disable mipsdspr1
3972             disable mipsdspr2
3973             disable msa
3974             enable local_aligned_8 local_aligned_16
3975             enable simd_align_16
3976             enable fast_64bit
3977             enable fast_clz
3978             enable fast_cmov
3979             enable fast_unaligned
3980             disable aligned_stack
3981             cpuflags="-march=loongson3a -mhard-float"
3982         ;;
3983         generic)
3984             disable mips32r5
3985             disable mips64r6
3986             disable msa
3987         ;;
3988     esac
3989
3990 elif enabled ppc; then
3991
3992     disable ldbrx
3993
3994     case $(tolower $cpu) in
3995         601|ppc601|powerpc601)
3996             cpuflags="-mcpu=601"
3997             disable altivec
3998         ;;
3999         603*|ppc603*|powerpc603*)
4000             cpuflags="-mcpu=603"
4001             disable altivec
4002         ;;
4003         604*|ppc604*|powerpc604*)
4004             cpuflags="-mcpu=604"
4005             disable altivec
4006         ;;
4007         g3|75*|ppc75*|powerpc75*)
4008             cpuflags="-mcpu=750"
4009             disable altivec
4010         ;;
4011         g4|745*|ppc745*|powerpc745*)
4012             cpuflags="-mcpu=7450"
4013             disable vsx
4014         ;;
4015         74*|ppc74*|powerpc74*)
4016             cpuflags="-mcpu=7400"
4017             disable vsx
4018         ;;
4019         g5|970|ppc970|powerpc970)
4020             cpuflags="-mcpu=970"
4021             disable vsx
4022         ;;
4023         power[3-6]*)
4024             cpuflags="-mcpu=$cpu"
4025             disable vsx
4026         ;;
4027         power[7-8]*)
4028             cpuflags="-mcpu=$cpu"
4029         ;;
4030         cell)
4031             cpuflags="-mcpu=cell"
4032             enable ldbrx
4033             disable vsx
4034         ;;
4035         e500mc)
4036             cpuflags="-mcpu=e500mc"
4037             disable altivec
4038         ;;
4039         e500v2)
4040             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4041             disable altivec
4042             disable dcbzl
4043         ;;
4044         e500)
4045             cpuflags="-mcpu=8540 -mhard-float"
4046             disable altivec
4047             disable dcbzl
4048         ;;
4049     esac
4050
4051 elif enabled sparc; then
4052
4053     case $cpu in
4054         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4055             cpuflags="-mcpu=$cpu"
4056         ;;
4057         ultrasparc*|niagara[234])
4058             cpuflags="-mcpu=$cpu"
4059         ;;
4060     esac
4061
4062 elif enabled x86; then
4063
4064     case $cpu in
4065         i[345]86|pentium)
4066             cpuflags="-march=$cpu"
4067             disable i686
4068             disable mmx
4069         ;;
4070         # targets that do NOT support nopl and conditional mov (cmov)
4071         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4072             cpuflags="-march=$cpu"
4073             disable i686
4074         ;;
4075         # targets that do support nopl and conditional mov (cmov)
4076         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4077         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4078             cpuflags="-march=$cpu"
4079             enable i686
4080             enable fast_cmov
4081         ;;
4082         # targets that do support conditional mov but on which it's slow
4083         pentium4|pentium4m|prescott|nocona)
4084             cpuflags="-march=$cpu"
4085             enable i686
4086             disable fast_cmov
4087         ;;
4088     esac
4089
4090 fi
4091
4092 if [ "$cpu" != generic ]; then
4093     add_cflags  $cpuflags
4094     add_asflags $cpuflags
4095 fi
4096
4097 # compiler sanity check
4098 check_exec <<EOF
4099 int main(void){ return 0; }
4100 EOF
4101 if test "$?" != 0; then
4102     echo "$cc is unable to create an executable file."
4103     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4104         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4105         echo "Only do this if you know what cross compiling means."
4106     fi
4107     die "C compiler test failed."
4108 fi
4109
4110 add_cppflags -D_ISOC99_SOURCE
4111 add_cxxflags -D__STDC_CONSTANT_MACROS
4112 check_cflags -std=c99
4113 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4114 #include <stdlib.h>
4115 EOF
4116 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4117 #include <stdlib.h>
4118 EOF
4119
4120 add_host_cppflags -D_ISOC99_SOURCE
4121 check_host_cflags -std=c99
4122 check_host_cflags -Wall
4123 check_host_cflags -O3
4124
4125 check_64bit(){
4126     arch32=$1
4127     arch64=$2
4128     expr=$3
4129     check_code cc "" "int test[2*($expr) - 1]" &&
4130         subarch=$arch64 || subarch=$arch32
4131 }
4132
4133 case "$arch" in
4134     aarch64|alpha|ia64)
4135         spic=$shared
4136     ;;
4137     mips)
4138         check_64bit mips mips64 '_MIPS_SIM > 1'
4139         spic=$shared
4140     ;;
4141     parisc)
4142         check_64bit parisc parisc64 'sizeof(void *) > 4'
4143         spic=$shared
4144     ;;
4145     ppc)
4146         check_64bit ppc ppc64 'sizeof(void *) > 4'
4147         spic=$shared
4148     ;;
4149     s390)
4150         check_64bit s390 s390x 'sizeof(void *) > 4'
4151         spic=$shared
4152     ;;
4153     sparc)
4154         check_64bit sparc sparc64 'sizeof(void *) > 4'
4155         spic=$shared
4156     ;;
4157     x86)
4158         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4159         # Treat x32 as x64 for now. Note it also needs spic=$shared
4160         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4161             subarch=x86_64
4162         if test "$subarch" = "x86_64"; then
4163             spic=$shared
4164         fi
4165     ;;
4166     ppc)
4167         check_cc <<EOF && subarch="ppc64"
4168         int test[(int)sizeof(char*) - 7];
4169 EOF
4170     ;;
4171 esac
4172
4173 enable $subarch
4174 enabled spic && enable_weak pic
4175
4176 # OS specific
4177 case $target_os in
4178     aix)
4179         SHFLAGS=-shared
4180         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4181         enabled shared && add_ldflags -Wl,-brtl
4182         ;;
4183     android)
4184         disable symver
4185         enable section_data_rel_ro
4186         SLIB_INSTALL_NAME='$(SLIBNAME)'
4187         SLIB_INSTALL_LINKS=
4188         # soname not set on purpose
4189         SHFLAGS=-shared
4190         ;;
4191     haiku)
4192         prefix_default="/boot/common"
4193         network_extralibs="-lnetwork"
4194         host_libs=
4195         ;;
4196     sunos)
4197         SHFLAGS='-shared -Wl,-h,$$(@F)'
4198         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4199         network_extralibs="-lsocket -lnsl"
4200         add_cppflags -D__EXTENSIONS__
4201         # When using suncc to build, the Solaris linker will mark
4202         # an executable with each instruction set encountered by
4203         # the Solaris assembler.  As our libraries contain their own
4204         # guards for processor-specific code, instead suppress
4205         # generation of the HWCAPS ELF section on Solaris x86 only.
4206         enabled_all suncc x86 &&
4207             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4208             add_ldflags -Wl,-M,mapfile
4209         nm_default='nm -P -g'
4210         ;;
4211     netbsd)
4212         disable symver
4213         oss_indev_extralibs="-lossaudio"
4214         oss_outdev_extralibs="-lossaudio"
4215         enabled gcc || check_ldflags -Wl,-zmuldefs
4216         ;;
4217     openbsd|bitrig)
4218         disable symver
4219         SHFLAGS='-shared'
4220         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4221         SLIB_INSTALL_LINKS=
4222         oss_indev_extralibs="-lossaudio"
4223         oss_outdev_extralibs="-lossaudio"
4224         ;;
4225     dragonfly)
4226         disable symver
4227         ;;
4228     freebsd)
4229         ;;
4230     bsd/os)
4231         add_extralibs -lpoll -lgnugetopt
4232         strip="strip -d"
4233         ;;
4234     darwin)
4235         enabled ppc && add_asflags -force_cpusubtype_ALL
4236         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4237         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4238         strip="${strip} -x"
4239         add_ldflags -Wl,-dynamic,-search_paths_first
4240         SLIBSUF=".dylib"
4241         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4242         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4243         objformat="macho"
4244         enabled x86_64 && objformat="macho64"
4245         enabled_any pic shared x86_64 ||
4246             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4247         ;;
4248     mingw32*)
4249         if test $target_os = "mingw32ce"; then
4250             disable network
4251         else
4252             target_os=mingw32
4253         fi
4254         LIBTARGET=i386
4255         if enabled x86_64; then
4256             LIBTARGET="i386:x86-64"
4257         elif enabled arm; then
4258             LIBTARGET=arm-wince
4259         fi
4260         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4261         check_ldflags -Wl,--nxcompat
4262         check_ldflags -Wl,--dynamicbase
4263         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4264         shlibdir_default="$bindir_default"
4265         SLIBPREF=""
4266         SLIBSUF=".dll"
4267         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4268         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4269         dlltool="${cross_prefix}dlltool"
4270         if check_cmd lib.exe -list; then
4271             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4272             if enabled x86_64; then
4273                 LIBTARGET=x64
4274             fi
4275         elif check_cmd $dlltool --version; then
4276             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4277         fi
4278         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4279         SLIB_INSTALL_LINKS=
4280         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4281         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4282         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4283         objformat="win32"
4284         ranlib=:
4285         enable dos_paths
4286         ;;
4287     win32|win64)
4288         disable symver
4289         if enabled shared; then
4290             # Link to the import library instead of the normal static library
4291             # for shared libs.
4292             LD_LIB='%.lib'
4293             # Cannot build both shared and static libs with MSVC or icl.
4294             disable static
4295         fi
4296         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4297         shlibdir_default="$bindir_default"
4298         SLIBPREF=""
4299         SLIBSUF=".dll"
4300         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4301         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4302         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4303         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4304         SLIB_INSTALL_LINKS=
4305         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4306         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4307         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4308         objformat="win32"
4309         ranlib=:
4310         enable dos_paths
4311         ;;
4312     cygwin*)
4313         target_os=cygwin
4314         shlibdir_default="$bindir_default"
4315         SLIBPREF="cyg"
4316         SLIBSUF=".dll"
4317         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4318         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4319         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4320         SLIB_INSTALL_LINKS=
4321         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4322         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4323         objformat="win32"
4324         enable dos_paths
4325         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4326         ;;
4327     *-dos|freedos|opendos)
4328         network_extralibs="-lsocket"
4329         objformat="coff"
4330         enable dos_paths
4331         add_cppflags -U__STRICT_ANSI__
4332         ;;
4333     linux)
4334         enable dv1394
4335         enable section_data_rel_ro
4336         ;;
4337     irix*)
4338         target_os=irix
4339         ranlib="echo ignoring ranlib"
4340         ;;
4341     os/2*)
4342         strip="lxlite -CS"
4343         ln_s="cp -f"
4344         objformat="aout"
4345         add_cppflags -D_GNU_SOURCE
4346         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4347         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4348         LIBSUF="_s.a"
4349         SLIBPREF=""
4350         SLIBSUF=".dll"
4351         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4352         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4353         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4354             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4355             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4356             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4357             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4358         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4359             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4360         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4361         enable dos_paths
4362         enable_weak os2threads
4363         ;;
4364     gnu/kfreebsd)
4365         add_cppflags -D_BSD_SOURCE
4366         ;;
4367     gnu)
4368         ;;
4369     qnx)
4370         add_cppflags -D_QNX_SOURCE
4371         network_extralibs="-lsocket"
4372         ;;
4373     symbian)
4374         SLIBSUF=".dll"
4375         enable dos_paths
4376         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4377         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4378         add_ldflags -Wl,--target1-abs,--no-undefined \
4379                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4380                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4381         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4382                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4383                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4384         ;;
4385     osf1)
4386         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4387         ;;
4388     minix)
4389         ;;
4390     plan9)
4391         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4392                      -D_REENTRANT_SOURCE        \
4393                      -D_RESEARCH_SOURCE         \
4394                      -DFD_SETSIZE=96            \
4395                      -DHAVE_SOCK_OPTS
4396         add_compat strtod.o strtod=avpriv_strtod
4397         network_extralibs='-lbsd'
4398         exeobjs=compat/plan9/main.o
4399         disable ffserver
4400         cp_f='cp'
4401         ;;
4402     none)
4403         ;;
4404     *)
4405         die "Unknown OS '$target_os'."
4406         ;;
4407 esac
4408
4409 # determine libc flavour
4410
4411 probe_libc(){
4412     pfx=$1
4413     pfx_no_=${pfx%_}
4414     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4415     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4416         eval ${pfx}libc_type=uclibc
4417         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4418     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4419         eval ${pfx}libc_type=glibc
4420         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4421     # MinGW headers can be installed on Cygwin, so check for newlib first.
4422     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4423         eval ${pfx}libc_type=newlib
4424         add_${pfx}cppflags -U__STRICT_ANSI__
4425     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4426     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4427         eval ${pfx}libc_type=mingw64
4428         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4429             add_compat msvcrt/snprintf.o
4430             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4431         fi
4432         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4433         eval test \$${pfx_no_}cc_type = "gcc" &&
4434             add_${pfx}cppflags -D__printf__=__gnu_printf__
4435     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4436          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4437         eval ${pfx}libc_type=mingw32
4438         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4439             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4440             die "ERROR: MinGW32 runtime version must be >= 3.15."
4441         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4442         eval test \$${pfx_no_}cc_type = "gcc" &&
4443             add_${pfx}cppflags -D__printf__=__gnu_printf__
4444     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4445         eval ${pfx}libc_type=msvcrt
4446         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4447             if [ "$pfx" = host_ ]; then
4448                 add_host_cppflags -Dsnprintf=_snprintf
4449             else
4450                 add_compat strtod.o strtod=avpriv_strtod
4451                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4452                                              _snprintf=avpriv_snprintf  \
4453                                              vsnprintf=avpriv_vsnprintf
4454             fi
4455         fi
4456         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4457         # 0x601 by default unless something else is set by the user.
4458         # This can easily lead to us detecting functions only present
4459         # in such new versions and producing binaries requiring windows 7.0.
4460         # Therefore explicitly set the default to XP unless the user has
4461         # set something else on the command line.
4462         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4463             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4464     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4465         eval ${pfx}libc_type=klibc
4466     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4467         eval ${pfx}libc_type=bionic
4468     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4469         eval ${pfx}libc_type=solaris
4470         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4471     fi
4472     check_${pfx}cc <<EOF
4473 #include <time.h>
4474 void *v = localtime_r;
4475 EOF
4476 test "$?" != 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
4477 #include <time.h>
4478 void *v = localtime_r;
4479 EOF
4480
4481 }
4482
4483 probe_libc
4484 test -n "$libc_type" && enable libc_$libc_type
4485 probe_libc host_
4486 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4487
4488 case $libc_type in
4489     bionic)
4490         add_compat strtod.o strtod=avpriv_strtod
4491         ;;
4492 esac
4493
4494 # hacks for compiler/libc/os combinations
4495
4496 if enabled_all tms470 libc_glibc; then
4497     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4498     add_cppflags -D__USER_LABEL_PREFIX__=
4499     add_cppflags -D__builtin_memset=memset
4500     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4501     add_cflags   -pds=48    # incompatible redefinition of macro
4502 fi
4503
4504 if enabled_all ccc libc_glibc; then
4505     add_ldflags -Wl,-z,now  # calls to libots crash without this
4506 fi
4507
4508 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4509     add_cppflags '-I\$(SRC_PATH)/compat/float'
4510
4511 esc(){
4512     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4513 }
4514
4515 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4516
4517 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4518
4519 set_default libdir
4520 : ${shlibdir_default:="$libdir"}
4521 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4522
4523 set_default $PATHS_LIST
4524 set_default nm
4525
4526 # we need to build at least one lib type
4527 if ! enabled_any static shared; then
4528     cat <<EOF
4529 At least one library type must be built.
4530 Specify --enable-static to build the static libraries or --enable-shared to
4531 build the shared libraries as well. To only build the shared libraries specify
4532 --disable-static in addition to --enable-shared.
4533 EOF
4534     exit 1;
4535 fi
4536
4537 die_license_disabled() {
4538     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4539 }
4540
4541 die_license_disabled_gpl() {
4542     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4543 }
4544
4545 die_license_disabled gpl frei0r
4546 die_license_disabled gpl libcdio
4547 die_license_disabled gpl libsmbclient
4548 die_license_disabled gpl libutvideo
4549 die_license_disabled gpl libvidstab
4550 die_license_disabled gpl libx264
4551 die_license_disabled gpl libx265
4552 die_license_disabled gpl libxavs
4553 die_license_disabled gpl libxvid
4554 die_license_disabled gpl libzvbi
4555 die_license_disabled gpl x11grab
4556
4557 die_license_disabled nonfree libaacplus
4558 die_license_disabled nonfree libfaac
4559 die_license_disabled nonfree nvenc
4560 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4561 enabled gpl && die_license_disabled_gpl nonfree openssl
4562
4563 die_license_disabled version3 libopencore_amrnb
4564 die_license_disabled version3 libopencore_amrwb
4565 die_license_disabled version3 libsmbclient
4566 die_license_disabled version3 libvo_aacenc
4567 die_license_disabled version3 libvo_amrwbenc
4568
4569 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4570
4571 disabled optimizations || check_cflags -fomit-frame-pointer
4572
4573 enable_weak_pic() {
4574     disabled pic && return
4575     enable pic
4576     add_cppflags -DPIC
4577     case "$target_os" in
4578     mingw*|cygwin*)
4579         ;;
4580     *)
4581         add_cflags -fPIC
4582         ;;
4583     esac
4584     add_asflags  -fPIC
4585 }
4586
4587 enabled pic && enable_weak_pic
4588
4589 check_cc <<EOF || die "Symbol mangling check failed."
4590 int ff_extern;
4591 EOF
4592 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4593 extern_prefix=${sym%%ff_extern*}
4594
4595 check_cc <<EOF && enable_weak inline_asm
4596 void foo(void) { __asm__ volatile ("" ::); }
4597 EOF
4598
4599 _restrict=
4600 for restrict_keyword in restrict __restrict__ __restrict; do
4601     check_cc <<EOF && _restrict=$restrict_keyword && break
4602 void foo(char * $restrict_keyword p);
4603 EOF
4604 done
4605
4606 check_cc <<EOF && enable pragma_deprecated
4607 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4608 EOF
4609
4610 check_cc <<EOF && enable attribute_packed
4611 struct { int x; } __attribute__((packed)) x;
4612 EOF
4613
4614 check_cc <<EOF && enable attribute_may_alias
4615 union { int x; } __attribute__((may_alias)) x;
4616 EOF
4617
4618 check_cc <<EOF || die "endian test failed"
4619 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4620 EOF
4621 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4622
4623 if ! enabled ppc64 || enabled bigendian; then
4624     disable vsx
4625 fi
4626
4627 check_gas() {
4628     log "check_gas using '$as' as AS"
4629     # :vararg is used on aarch64, arm and ppc altivec
4630     check_as <<EOF || return 1
4631 .macro m n, y:vararg=0
4632 \n: .int \y
4633 .endm
4634 m x
4635 EOF
4636     # .altmacro is only used in arm asm
4637     ! enabled arm || check_as <<EOF || return 1
4638 .altmacro
4639 EOF
4640     enable gnu_as
4641     return 0
4642 }
4643
4644 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4645     nogas=:
4646     enabled_any arm aarch64 && nogas=die
4647     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4648     as_noop=-v
4649
4650     case $as_type in
4651         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4652         gcc)  gaspp_as_type=gas ;;
4653         *)    gaspp_as_type=$as_type ;;
4654     esac
4655
4656     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4657
4658     test "${as#*gas-preprocessor.pl}" != "$as" ||
4659     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4660         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4661
4662     if ! check_gas ; then
4663         as=${gas:=$as}
4664         check_gas || \
4665             $nogas "GNU assembler not found, install/update gas-preprocessor"
4666     fi
4667
4668     check_as <<EOF && enable as_func
4669 .func test
4670 .endfunc
4671 EOF
4672 fi
4673
4674 check_inline_asm inline_asm_labels '"1:\n"'
4675
4676 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4677
4678 if enabled aarch64; then
4679     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4680     # internal assembler in clang 3.3 does not support this instruction
4681     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4682     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4683
4684     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4685
4686 elif enabled alpha; then
4687
4688     check_cflags -mieee
4689
4690 elif enabled arm; then
4691
4692     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4693 float func(float a, float b){ return a+b; }
4694 EOF
4695
4696     enabled thumb && check_cflags -mthumb || check_cflags -marm
4697
4698     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4699         enable vfp_args
4700     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4701         case "${cross_prefix:-$cc}" in
4702             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4703             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4704 __asm__ (".eabi_attribute 28, 1");
4705 int main(void) { return 0; }
4706 EOF
4707         esac
4708         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4709     fi
4710
4711     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4712     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4713     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4714     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4715     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4716     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4717     enabled setend  && check_insn setend  'setend be'
4718
4719     [ $target_os = linux ] || [ $target_os = android ] ||
4720         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4721             $ARCH_EXT_LIST_ARM
4722
4723     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4724
4725     check_as <<EOF && enable as_dn_directive
4726 ra .dn d0.i16
4727 .unreq ra
4728 EOF
4729
4730     # llvm's integrated assembler supports .object_arch from llvm 3.5
4731     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4732 .object_arch armv4
4733 EOF
4734
4735     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4736
4737 elif enabled mips; then
4738
4739     # Enable minimum ISA based on selected options
4740     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4741         add_cflags "-mips64r2"
4742         add_asflags "-mips64r2"
4743     elif enabled mips64 && enabled mipsfpu && disabled loongson3; then
4744         add_cflags "-mips64"
4745         add_asflags "-mips64"
4746     elif enabled mipsdspr1 || enabled mipsdspr2; then
4747         add_cflags "-mips32r2 -mfp32"
4748         add_asflags "-mips32r2 -mfp32"
4749     elif enabled mips32r5 || enabled mips64r6; then
4750         check_cflags "-mfp64"
4751         check_ldflags "-mfp64"
4752     fi
4753
4754     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4755      check_ldflags "-mips32r5" &&
4756      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4757     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4758      check_ldflags "-mips64r6" &&
4759      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4760     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4761      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4762     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4763      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4764     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4765      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4766     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4767      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4768     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4769
4770     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4771     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4772     enabled msa && add_asflags "-mmsa"
4773
4774 elif enabled parisc; then
4775
4776     if enabled gcc; then
4777         case $($cc -dumpversion) in
4778             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4779         esac
4780     fi
4781
4782 elif enabled ppc; then
4783
4784     enable local_aligned_8 local_aligned_16 local_aligned_32
4785
4786     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4787     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4788     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4789     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4790
4791     # AltiVec flags: The FSF version of GCC differs from the Apple version
4792     if enabled altivec; then
4793         check_cflags -maltivec -mabi=altivec &&
4794         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4795         check_cflags -faltivec
4796
4797         # check if our compiler supports Motorola AltiVec C API
4798         check_cc <<EOF || disable altivec
4799 $inc_altivec_h
4800 int main(void) {
4801     vector signed int v1 = (vector signed int) { 0 };
4802     vector signed int v2 = (vector signed int) { 1 };
4803     v1 = vec_add(v1, v2);
4804     return 0;
4805 }
4806 EOF
4807
4808         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4809     fi
4810
4811     if enabled vsx; then
4812         check_cflags -mvsx &&
4813         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4814     fi
4815
4816     if enabled power8; then
4817         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4818     fi
4819
4820 elif enabled x86; then
4821
4822     check_builtin rdtsc    intrin.h   "__rdtsc()"
4823     check_builtin mm_empty mmintrin.h "_mm_empty()"
4824
4825     enable local_aligned_8 local_aligned_16 local_aligned_32
4826
4827     # check whether EBP is available on x86
4828     # As 'i' is stored on the stack, this program will crash
4829     # if the base pointer is used to access it because the
4830     # base pointer is cleared in the inline assembly code.
4831     check_exec_crash <<EOF && enable ebp_available
4832 volatile int i=0;
4833 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4834 return i;
4835 EOF
4836
4837     # check whether EBX is available on x86
4838     check_inline_asm ebx_available '""::"b"(0)' &&
4839         check_inline_asm ebx_available '"":::"%ebx"'
4840
4841     # check whether xmm clobbers are supported
4842     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4843
4844     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4845         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4846
4847     # check whether binutils is new enough to compile SSSE3/MMXEXT
4848     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4849     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4850
4851     if ! disabled_any asm mmx yasm; then
4852         if check_cmd $yasmexe --version; then
4853             enabled x86_64 && yasm_extra="-m amd64"
4854             yasm_debug="-g dwarf2"
4855         elif check_cmd nasm -v; then
4856             yasmexe=nasm
4857             yasm_debug="-g -F dwarf"
4858             if enabled x86_64; then
4859                 case "$objformat" in
4860                     elf)   objformat=elf64 ;;
4861                     win32) objformat=win64 ;;
4862                 esac
4863             fi
4864         fi
4865
4866         YASMFLAGS="-f $objformat $yasm_extra"
4867         enabled pic               && append YASMFLAGS "-DPIC"
4868         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4869         case "$objformat" in
4870             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4871         esac
4872
4873         check_yasm "movbe ecx, [5]" && enable yasm ||
4874             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4875         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4876         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4877         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4878         check_yasm "CPU amdnop" || disable cpunop
4879     fi
4880
4881     case "$cpu" in
4882         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4883             disable fast_clz
4884         ;;
4885     esac
4886
4887 fi
4888
4889 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4890
4891 check_ldflags -Wl,--as-needed
4892 check_ldflags -Wl,-z,noexecstack
4893
4894 if check_func dlopen; then
4895     ldl=
4896 elif check_func dlopen -ldl; then
4897     ldl=-ldl
4898 fi
4899
4900 frei0r_filter_extralibs='$ldl'
4901 frei0r_src_filter_extralibs='$ldl'
4902 ladspa_filter_extralibs='$ldl'
4903 nvenc_encoder_extralibs='$ldl'
4904
4905 if ! disabled network; then
4906     check_func getaddrinfo $network_extralibs
4907     check_func getservbyport $network_extralibs
4908     check_func inet_aton $network_extralibs
4909
4910     check_type netdb.h "struct addrinfo"
4911     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4912     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4913     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4914     check_type poll.h "struct pollfd"
4915     check_type netinet/sctp.h "struct sctp_event_subscribe"
4916     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4917     check_type netinet/in.h "struct sockaddr_in6"
4918     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4919     check_type "sys/types.h sys/socket.h" socklen_t
4920
4921     # Prefer arpa/inet.h over winsock2
4922     if check_header arpa/inet.h ; then
4923         check_func closesocket
4924     elif check_header winsock2.h ; then
4925         check_func_headers winsock2.h closesocket -lws2 &&
4926             network_extralibs="-lws2" ||
4927         { check_func_headers winsock2.h closesocket -lws2_32 &&
4928             network_extralibs="-lws2_32"; } || disable winsock2_h network
4929         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4930
4931         check_type ws2tcpip.h socklen_t
4932         check_type ws2tcpip.h "struct addrinfo"
4933         check_type ws2tcpip.h "struct group_source_req"
4934         check_type ws2tcpip.h "struct ip_mreq_source"
4935         check_type ws2tcpip.h "struct ipv6_mreq"
4936         check_type winsock2.h "struct pollfd"
4937         check_struct winsock2.h "struct sockaddr" sa_len
4938         check_type ws2tcpip.h "struct sockaddr_in6"
4939         check_type ws2tcpip.h "struct sockaddr_storage"
4940     else
4941         disable network
4942     fi
4943 fi
4944
4945 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4946 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4947 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4948 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4949 check_builtin sarestart signal.h "SA_RESTART"
4950 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4951 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
4952 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
4953
4954 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4955 check_func  ${malloc_prefix}memalign            && enable memalign
4956 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4957
4958 check_func  access
4959 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4960 check_func  fcntl
4961 check_func  fork
4962 check_func  gethrtime
4963 check_func  getopt
4964 check_func  getrusage
4965 check_func  gettimeofday
4966 check_func  isatty
4967 check_func  mach_absolute_time
4968 check_func  mkstemp
4969 check_func  mmap
4970 check_func  mprotect
4971 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4972 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4973 check_func  sched_getaffinity
4974 check_func  setrlimit
4975 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4976 check_func  strerror_r
4977 check_func  sysconf
4978 check_func  sysctl
4979 check_func  usleep
4980
4981 check_func_headers conio.h kbhit
4982 check_func_headers io.h setmode
4983 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4984 check_func_headers stdlib.h getenv
4985
4986 check_func_headers windows.h CoTaskMemFree -lole32
4987 check_func_headers windows.h GetProcessAffinityMask
4988 check_func_headers windows.h GetProcessTimes
4989 check_func_headers windows.h GetSystemTimeAsFileTime
4990 check_func_headers windows.h MapViewOfFile
4991 check_func_headers windows.h PeekNamedPipe
4992 check_func_headers windows.h SetConsoleTextAttribute
4993 check_func_headers windows.h Sleep
4994 check_func_headers windows.h VirtualAlloc
4995 check_struct windows.h "CONDITION_VARIABLE" Ptr
4996 check_func_headers glob.h glob
4997 enabled xlib &&
4998     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4999
5000 check_header direct.h
5001 check_header dlfcn.h
5002 check_header d3d11.h
5003 check_header dxva.h
5004 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5005 check_header io.h
5006 check_header libcrystalhd/libcrystalhd_if.h
5007 check_header mach/mach_time.h
5008 check_header malloc.h
5009 check_header net/udplite.h
5010 check_header poll.h
5011 check_header sys/mman.h
5012 check_header sys/param.h
5013 check_header sys/resource.h
5014 check_header sys/select.h
5015 check_header sys/time.h
5016 check_header sys/un.h
5017 check_header termios.h
5018 check_header unistd.h
5019 check_header valgrind/valgrind.h
5020 check_header vdpau/vdpau.h
5021 check_header vdpau/vdpau_x11.h
5022 check_header VideoDecodeAcceleration/VDADecoder.h
5023 check_header windows.h
5024 check_header X11/extensions/XvMClib.h
5025 check_header asm/types.h
5026
5027 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5028 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5029 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5030
5031 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5032
5033 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
5034 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5035 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
5036
5037 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5038
5039 if ! disabled w32threads && ! enabled pthreads; then
5040     check_func_headers "windows.h process.h" _beginthreadex &&
5041         enable w32threads || disable w32threads
5042 fi
5043
5044 # check for some common methods of building with pthread support
5045 # do this before the optional library checks as some of them require pthreads
5046 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5047     enable pthreads
5048     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5049         add_cflags -pthread
5050         add_extralibs -pthread
5051     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5052         add_cflags -pthreads
5053         add_extralibs -pthreads
5054     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5055         add_cflags -ldl -pthread
5056         add_extralibs -ldl -pthread
5057     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5058         add_extralibs -lpthreadGC2
5059     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5060         :
5061     elif ! check_func pthread_join && ! check_func pthread_create; then
5062         disable pthreads
5063     fi
5064     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5065 fi
5066
5067
5068 if enabled pthreads; then
5069   check_func pthread_cancel
5070 fi
5071
5072 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5073 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5074 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5075
5076 check_lib math.h sin -lm && LIBM="-lm"
5077 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5078
5079 atan2f_args=2
5080 ldexpf_args=2
5081 powf_args=2
5082
5083 for func in $MATH_FUNCS; do
5084     eval check_mathfunc $func \${${func}_args:-1}
5085 done
5086
5087 # these are off by default, so fail if requested and not available
5088 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5089 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5090                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5091 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5092                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5093                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5094 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5095 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5096 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5097 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5098 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5099 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5100 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5101 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5102 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5103 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5104                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5105                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5106 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5107 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create
5108 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5109 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5110                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5111                                  warn "using libfdk without pkg-config"; } }
5112 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"
5113 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5114 enabled fontconfig        && enable libfontconfig
5115 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5116 enabled libfreetype       && require_libfreetype
5117 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5118 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5119 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5120                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5121                                done || die "ERROR: libgsm not found"; }
5122 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5123 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5124 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5125 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5126 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5127 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5128 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5129 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5130 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5131 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5132                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5133                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5134                                die "ERROR: libopenjpeg not found"; }
5135 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5136 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5137 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5138 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5139 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5140 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5141 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5142                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5143 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5144 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5145 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5146 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5147 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5148     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5149     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5150 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5151 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5152                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5153                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5154 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5155 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5156 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5157 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5158 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5159 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5160
5161 enabled libvpx            && {
5162     enabled libvpx_vp8_decoder && {
5163         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5164             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5165                 die "ERROR: libvpx decoder version must be >=0.9.1";
5166     }
5167     enabled libvpx_vp8_encoder && {
5168         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5169             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5170                 die "ERROR: libvpx encoder version must be >=0.9.7";
5171     }
5172     enabled libvpx_vp9_decoder && {
5173         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5174             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5175                 disable libvpx_vp9_decoder;
5176     }
5177     enabled libvpx_vp9_encoder && {
5178         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5179             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5180                 disable libvpx_vp9_encoder;
5181     }
5182     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5183         die "libvpx enabled but no supported decoders found"
5184     fi
5185 }
5186
5187 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5188 enabled libwebp           && {
5189     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5190     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5191 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5192                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5193                                  warn "using libx264 without pkg-config"; } } &&
5194                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5195                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5196 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5197                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5198                                die "ERROR: libx265 version must be >= 57."; }
5199 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5200 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5201 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5202 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5203 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5204                                 { ! enabled cross_compile && {
5205                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5206                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5207                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5208                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5209                                die "ERROR: mmal not found"; }
5210 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5211                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5212                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5213                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5214 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5215                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5216                                die "ERROR: openal not found"; } &&
5217                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5218                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5219 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5220                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5221                                die "ERROR: opencl not found"; } &&
5222                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5223                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5224                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5225 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5226                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5227                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5228                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5229                                die "ERROR: opengl not found."
5230                              }
5231 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5232                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5233                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5234                                die "ERROR: openssl not found"; }
5235 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5236
5237 if enabled gnutls; then
5238     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
5239     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5240 fi
5241
5242 # libdc1394 check
5243 if enabled libdc1394; then
5244     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5245         enable libdc1394_2; } ||
5246     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5247         enable libdc1394_1; } ||
5248     die "ERROR: No version of libdc1394 found "
5249 fi
5250 if ! disabled sdl; then
5251     SDL_CONFIG="${cross_prefix}sdl-config"
5252     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5253         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5254         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5255         enable sdl
5256     else
5257         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5258             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5259             sdl_libs=$("${SDL_CONFIG}" --libs)
5260             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5261             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5262             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5263             enable sdl
5264         elif enabled sdl ; then
5265             die "ERROR: SDL not found"
5266         else
5267             disable sdl
5268         fi
5269     fi
5270 fi
5271 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5272
5273 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5274     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5275     enable securetransport; }
5276
5277 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5278 enabled makeinfo \
5279     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5280     && enable makeinfo_html || disable makeinfo_html
5281 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5282 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5283 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5284 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5285
5286 check_header linux/fb.h
5287 check_header linux/videodev.h
5288 check_header linux/videodev2.h
5289 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5290
5291 check_header sys/videoio.h
5292 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5293
5294 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5295 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5296 # w32api 3.12 had it defined wrong
5297 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5298
5299 check_type "dshow.h" IBaseFilter
5300
5301 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5302 { check_header dev/bktr/ioctl_meteor.h &&
5303   check_header dev/bktr/ioctl_bt848.h; } ||
5304 { check_header machine/ioctl_meteor.h &&
5305   check_header machine/ioctl_bt848.h; } ||
5306 { check_header dev/video/meteor/ioctl_meteor.h &&
5307   check_header dev/video/bktr/ioctl_bt848.h; } ||
5308 check_header dev/ic/bt8xx.h
5309
5310 check_header sndio.h
5311 if check_struct sys/soundcard.h audio_buf_info bytes; then
5312     enable_safe sys/soundcard.h
5313 else
5314     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5315     #include <sys/soundcard.h>
5316     audio_buf_info abc;
5317 EOF
5318 fi
5319 check_header soundcard.h
5320
5321 enabled_any alsa_indev alsa_outdev &&
5322     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5323
5324 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5325     check_func jack_port_get_latency_range -ljack
5326
5327 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5328
5329 if enabled libcdio; then
5330     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5331     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5332     die "ERROR: No usable libcdio/cdparanoia found"
5333 fi
5334
5335 enabled xlib &&
5336     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5337
5338 if ! disabled libxcb; then
5339     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5340         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5341     } && disable x11grab && enable libxcb
5342
5343 if enabled libxcb; then
5344     disabled libxcb_shm || {
5345         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5346             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5347         } && check_header sys/shm.h && enable libxcb_shm; }
5348
5349     disabled libxcb_xfixes || {
5350         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5351             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5352         } && enable libxcb_xfixes; }
5353
5354     disabled libxcb_shape || {
5355         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5356             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5357         } && enable libxcb_shape; }
5358
5359     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5360     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5361 fi
5362 fi
5363
5364 if enabled x11grab; then
5365     enabled xlib || die "ERROR: Xlib not found"
5366     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5367     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5368 fi
5369
5370 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5371
5372 enabled dxva2api_h &&
5373     check_cc <<EOF && enable dxva2api_cobj
5374 #define _WIN32_WINNT 0x0600
5375 #define COBJMACROS
5376 #include <windows.h>
5377 #include <d3d9.h>
5378 #include <dxva2api.h>
5379 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5380 EOF
5381
5382 enabled vaapi &&
5383     check_lib va/va.h vaInitialize -lva ||
5384     disable vaapi
5385
5386 enabled vaapi && enabled xlib &&
5387     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5388     enable vaapi_x11
5389
5390 enabled vdpau &&
5391     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5392     disable vdpau
5393
5394 enabled vdpau && enabled xlib &&
5395     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5396     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5397     enable vdpau_x11
5398
5399 # Funny iconv installations are not unusual, so check it after all flags have been set
5400 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5401
5402 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5403
5404 # add some useful compiler flags if supported
5405 check_cflags -Wdeclaration-after-statement
5406 check_cflags -Wall
5407 check_cflags -Wdisabled-optimization
5408 check_cflags -Wpointer-arith
5409 check_cflags -Wredundant-decls
5410 check_cflags -Wwrite-strings
5411 check_cflags -Wtype-limits
5412 check_cflags -Wundef
5413 check_cflags -Wmissing-prototypes
5414 check_cflags -Wno-pointer-to-int-cast
5415 check_cflags -Wstrict-prototypes
5416 check_cflags -Wempty-body
5417 enabled extra_warnings && check_cflags -Winline
5418
5419 check_disable_warning(){
5420     warning_flag=-W${1#-Wno-}
5421     test_cflags $warning_flag && add_cflags $1
5422 }
5423
5424 check_disable_warning -Wno-parentheses
5425 check_disable_warning -Wno-switch
5426 check_disable_warning -Wno-format-zero-length
5427 check_disable_warning -Wno-pointer-sign
5428
5429 # add some linker flags
5430 check_ldflags -Wl,--warn-common
5431 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5432 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5433 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5434
5435 # add some strip flags
5436 # -wN '..@*' is more selective than -x, but not available everywhere.
5437 check_stripflags -wN \'..@*\' || check_stripflags -x
5438
5439 enabled neon_clobber_test &&
5440     check_ldflags -Wl,--wrap,avcodec_open2              \
5441                   -Wl,--wrap,avcodec_decode_audio4      \
5442                   -Wl,--wrap,avcodec_decode_video2      \
5443                   -Wl,--wrap,avcodec_decode_subtitle2   \
5444                   -Wl,--wrap,avcodec_encode_audio2      \
5445                   -Wl,--wrap,avcodec_encode_video2      \
5446                   -Wl,--wrap,avcodec_encode_subtitle    \
5447                   -Wl,--wrap,swr_convert                \
5448                   -Wl,--wrap,avresample_convert ||
5449     disable neon_clobber_test
5450
5451 enabled xmm_clobber_test &&
5452     check_ldflags -Wl,--wrap,avcodec_open2              \
5453                   -Wl,--wrap,avcodec_decode_audio4      \
5454                   -Wl,--wrap,avcodec_decode_video2      \
5455                   -Wl,--wrap,avcodec_decode_subtitle2   \
5456                   -Wl,--wrap,avcodec_encode_audio2      \
5457                   -Wl,--wrap,avcodec_encode_video       \
5458                   -Wl,--wrap,avcodec_encode_video2      \
5459                   -Wl,--wrap,avcodec_encode_subtitle    \
5460                   -Wl,--wrap,swr_convert                \
5461                   -Wl,--wrap,avresample_convert         \
5462                   -Wl,--wrap,sws_scale ||
5463     disable xmm_clobber_test
5464
5465 echo "X{};" > $TMPV
5466 if test_ldflags -Wl,--version-script,$TMPV; then
5467     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5468     check_cc <<EOF && enable symver_asm_label
5469 void ff_foo(void) __asm__ ("av_foo@VERSION");
5470 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5471 EOF
5472     check_cc <<EOF && enable symver_gnu_asm
5473 __asm__(".symver ff_foo,av_foo@VERSION");
5474 void ff_foo(void) {}
5475 EOF
5476 fi
5477
5478 if [ -z "$optflags" ]; then
5479     if enabled small; then
5480         optflags=$cflags_size
5481     elif enabled optimizations; then
5482         optflags=$cflags_speed
5483     else
5484         optflags=$cflags_noopt
5485     fi
5486 fi
5487
5488 check_optflags(){
5489     check_cflags "$@"
5490     enabled lto && check_ldflags "$@"
5491 }
5492
5493
5494 if enabled lto; then
5495     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5496     check_cflags  -flto
5497     check_ldflags -flto $cpuflags
5498     disable inline_asm_direct_symbol_refs
5499 fi
5500
5501 check_optflags $optflags
5502 check_optflags -fno-math-errno
5503 check_optflags -fno-signed-zeros
5504
5505 enabled ftrapv && check_cflags -ftrapv
5506
5507 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5508 int x;
5509 EOF
5510
5511
5512 if enabled icc; then
5513     # Just warnings, no remarks
5514     check_cflags -w1
5515     # -wd: Disable following warnings
5516     # 144, 167, 556: -Wno-pointer-sign
5517     # 188: enumerated type mixed with another type
5518     # 1292: attribute "foo" ignored
5519     # 1419: external declaration in primary source file
5520     # 10006: ignoring unknown option -fno-signed-zeros
5521     # 10148: ignoring unknown option -Wno-parentheses
5522     # 10156: ignoring option '-W'; no argument required
5523     # 13200: No EMMS instruction before call to function
5524     # 13203: No EMMS instruction before return from function
5525     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5526     # 11030: Warning unknown option --as-needed
5527     # 10156: ignoring option '-export'; no argument required
5528     check_ldflags -wd10156,11030
5529     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5530     enable ebp_available
5531     # The test above does not test linking
5532     enabled lto && disable symver_asm_label
5533     if enabled x86_32; then
5534         icc_version=$($cc -dumpversion)
5535         test ${icc_version%%.*} -ge 11 &&
5536             check_cflags -falign-stack=maintain-16-byte ||
5537             disable aligned_stack
5538     fi
5539 elif enabled ccc; then
5540     # disable some annoying warnings
5541     add_cflags -msg_disable bitnotint
5542     add_cflags -msg_disable mixfuncvoid
5543     add_cflags -msg_disable nonstandcast
5544     add_cflags -msg_disable unsupieee
5545 elif enabled gcc; then
5546     check_optflags -fno-tree-vectorize
5547     check_cflags -Werror=format-security
5548     check_cflags -Werror=implicit-function-declaration
5549     check_cflags -Werror=missing-prototypes
5550     check_cflags -Werror=return-type
5551     check_cflags -Werror=vla
5552     check_cflags -Wformat
5553     check_cflags -fdiagnostics-color=auto
5554     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5555 elif enabled llvm_gcc; then
5556     check_cflags -mllvm -stack-alignment=16
5557 elif enabled clang; then
5558     check_cflags -mllvm -stack-alignment=16
5559     check_cflags -Qunused-arguments
5560     check_cflags -Werror=implicit-function-declaration
5561     check_cflags -Werror=missing-prototypes
5562     check_cflags -Werror=return-type
5563 elif enabled cparser; then
5564     add_cflags -Wno-missing-variable-declarations
5565     add_cflags -Wno-empty-statement
5566 elif enabled armcc; then
5567     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5568     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5569     # 2523: use of inline assembly is deprecated
5570     add_cflags -W${armcc_opt},--diag_suppress=2523
5571     add_cflags -W${armcc_opt},--diag_suppress=1207
5572     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5573     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5574     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5575     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5576 elif enabled tms470; then
5577     add_cflags -pds=824 -pds=837
5578     disable inline_asm
5579 elif enabled pathscale; then
5580     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5581 elif enabled_any msvc icl; then
5582     enabled x86_32 && disable aligned_stack
5583     enabled_all x86_32 debug && add_cflags -Oy-
5584     enabled debug && add_ldflags -debug
5585     enable pragma_deprecated
5586     if enabled icl; then
5587         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5588         # (correctly) on icl 13.x.
5589         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5590             add_cflags -Qansi-alias
5591         # Some inline asm is not compilable in debug
5592         if enabled debug; then
5593             disable ebp_available
5594             disable ebx_available
5595         fi
5596     fi
5597     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5598     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5599 fi
5600
5601 case $as_type in
5602     clang)
5603         add_asflags -Qunused-arguments
5604     ;;
5605 esac
5606
5607 case $ld_type in
5608     clang)
5609         check_ldflags -Qunused-arguments
5610     ;;
5611 esac
5612
5613 case $target_os in
5614     osf1)
5615         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5616     ;;
5617     plan9)
5618         add_cppflags -Dmain=plan9_main
5619     ;;
5620 esac
5621
5622 enable frame_thread_encoder
5623
5624 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5625
5626 check_deps $CONFIG_LIST       \
5627            $CONFIG_EXTRA      \
5628            $HAVE_LIST         \
5629            $ALL_COMPONENTS    \
5630
5631 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"
5632
5633
5634 if test $target_os = "haiku"; then
5635     disable memalign
5636     disable posix_memalign
5637 fi
5638
5639 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5640     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5641     enable dxva2_lib
5642
5643 ! enabled_any memalign posix_memalign aligned_malloc &&
5644     enabled simd_align_16 && enable memalign_hack
5645
5646 # add_dep lib dep
5647 # -> enable ${lib}_deps_${dep}
5648 # -> add $dep to ${lib}_deps only once
5649 add_dep() {
5650     lib=$1
5651     dep=$2
5652     enabled "${lib}_deps_${dep}" && return 0
5653     enable  "${lib}_deps_${dep}"
5654     prepend "${lib}_deps" $dep
5655 }
5656
5657 # merge deps lib components
5658 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5659 merge_deps() {
5660     lib=$1
5661     shift
5662     for comp in $*; do
5663         enabled $comp || continue
5664         eval "dep=\"\$${comp}_deps\""
5665         for d in $dep; do
5666             add_dep $lib $d
5667         done
5668     done
5669 }
5670
5671 merge_deps libavfilter $FILTER_LIST
5672
5673 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5674
5675 for thread in $THREADS_LIST; do
5676     if enabled $thread; then
5677         test -n "$thread_type" &&
5678             die "ERROR: Only one thread type must be selected." ||
5679             thread_type="$thread"
5680     fi
5681 done
5682
5683 enabled zlib && add_cppflags -DZLIB_CONST
5684
5685 # conditional library dependencies, in linking order
5686 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5687 enabled aresample_filter    && prepend avfilter_deps "swresample"
5688 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5689 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5690 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5691 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5692 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5693 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5694 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5695 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5696 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5697 enabled pan_filter          && prepend avfilter_deps "swresample"
5698 enabled pp_filter           && prepend avfilter_deps "postproc"
5699 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5700 enabled resample_filter && prepend avfilter_deps "avresample"
5701 enabled sab_filter          && prepend avfilter_deps "swscale"
5702 enabled scale_filter    && prepend avfilter_deps "swscale"
5703 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5704 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5705 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5706 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5707
5708 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5709
5710 enabled opus_decoder    && prepend avcodec_deps "swresample"
5711
5712 expand_deps(){
5713     lib_deps=${1}_deps
5714     eval "deps=\$$lib_deps"
5715     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5716     unique $lib_deps
5717 }
5718
5719 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5720 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5721
5722 map 'expand_deps $v' $LIBRARY_LIST
5723
5724 echo "install prefix            $prefix"
5725 echo "source path               $source_path"
5726 echo "C compiler                $cc"
5727 echo "C library                 $libc_type"
5728 if test "$host_cc" != "$cc"; then
5729     echo "host C compiler           $host_cc"
5730     echo "host C library            $host_libc_type"
5731 fi
5732 echo "ARCH                      $arch ($cpu)"
5733 if test "$build_suffix" != ""; then
5734     echo "build suffix              $build_suffix"
5735 fi
5736 if test "$progs_suffix" != ""; then
5737     echo "progs suffix              $progs_suffix"
5738 fi
5739 if test "$extra_version" != ""; then
5740     echo "version string suffix     $extra_version"
5741 fi
5742 echo "big-endian                ${bigendian-no}"
5743 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5744 if enabled x86; then
5745     echo "${yasmexe}                      ${yasm-no}"
5746     echo "MMX enabled               ${mmx-no}"
5747     echo "MMXEXT enabled            ${mmxext-no}"
5748     echo "3DNow! enabled            ${amd3dnow-no}"
5749     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5750     echo "SSE enabled               ${sse-no}"
5751     echo "SSSE3 enabled             ${ssse3-no}"
5752     echo "AVX enabled               ${avx-no}"
5753     echo "XOP enabled               ${xop-no}"
5754     echo "FMA3 enabled              ${fma3-no}"
5755     echo "FMA4 enabled              ${fma4-no}"
5756     echo "i686 features enabled     ${i686-no}"
5757     echo "CMOV is fast              ${fast_cmov-no}"
5758     echo "EBX available             ${ebx_available-no}"
5759     echo "EBP available             ${ebp_available-no}"
5760 fi
5761 if enabled aarch64; then
5762     echo "NEON enabled              ${neon-no}"
5763     echo "VFP enabled               ${vfp-no}"
5764 fi
5765 if enabled arm; then
5766     echo "ARMv5TE enabled           ${armv5te-no}"
5767     echo "ARMv6 enabled             ${armv6-no}"
5768     echo "ARMv6T2 enabled           ${armv6t2-no}"
5769     echo "VFP enabled               ${vfp-no}"
5770     echo "NEON enabled              ${neon-no}"
5771     echo "THUMB enabled             ${thumb-no}"
5772 fi
5773 if enabled mips; then
5774     echo "MIPS FPU enabled          ${mipsfpu-no}"
5775     echo "MIPS32R5 enabled          ${mips32r5-no}"
5776     echo "MIPS64R6 enabled          ${mips64r6-no}"
5777     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5778     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5779     echo "MIPS MSA enabled          ${msa-no}"
5780     echo "LOONGSON3 enabled         ${loongson3-no}"
5781 fi
5782 if enabled ppc; then
5783     echo "AltiVec enabled           ${altivec-no}"
5784     echo "VSX enabled               ${vsx-no}"
5785     echo "POWER8 enabled            ${power8-no}"
5786     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5787     echo "dcbzl available           ${dcbzl-no}"
5788 fi
5789 echo "debug symbols             ${debug-no}"
5790 echo "strip symbols             ${stripping-no}"
5791 echo "optimize for size         ${small-no}"
5792 echo "optimizations             ${optimizations-no}"
5793 echo "static                    ${static-no}"
5794 echo "shared                    ${shared-no}"
5795 echo "postprocessing support    ${postproc-no}"
5796 echo "new filter support        ${avfilter-no}"
5797 echo "network support           ${network-no}"
5798 echo "threading support         ${thread_type-no}"
5799 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5800 echo "SDL support               ${sdl-no}"
5801 echo "opencl enabled            ${opencl-no}"
5802 echo "texi2html enabled         ${texi2html-no}"
5803 echo "perl enabled              ${perl-no}"
5804 echo "pod2man enabled           ${pod2man-no}"
5805 echo "makeinfo enabled          ${makeinfo-no}"
5806 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5807 test -n "$random_seed" &&
5808     echo "random seed               ${random_seed}"
5809 echo
5810
5811 echo "External libraries:"
5812 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5813 echo
5814
5815 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5816     echo "Enabled ${type}s:"
5817     eval list=\$$(toupper $type)_LIST
5818     print_enabled '_*' $list | print_3_columns
5819     echo
5820 done
5821
5822 license="LGPL version 2.1 or later"
5823 if enabled nonfree; then
5824     license="nonfree and unredistributable"
5825 elif enabled gplv3; then
5826     license="GPL version 3 or later"
5827 elif enabled lgplv3; then
5828     license="LGPL version 3 or later"
5829 elif enabled gpl; then
5830     license="GPL version 2 or later"
5831 fi
5832
5833 echo "License: $license"
5834
5835 echo "Creating config.mak, config.h, and doc/config.texi..."
5836
5837 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5838
5839 enabled stripping || strip="echo skipping strip"
5840
5841 config_files="$TMPH config.mak doc/config.texi"
5842
5843 cat > config.mak <<EOF
5844 # Automatically generated by configure - do not modify!
5845 ifndef FFMPEG_CONFIG_MAK
5846 FFMPEG_CONFIG_MAK=1
5847 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5848 prefix=$prefix
5849 LIBDIR=\$(DESTDIR)$libdir
5850 SHLIBDIR=\$(DESTDIR)$shlibdir
5851 INCDIR=\$(DESTDIR)$incdir
5852 BINDIR=\$(DESTDIR)$bindir
5853 DATADIR=\$(DESTDIR)$datadir
5854 DOCDIR=\$(DESTDIR)$docdir
5855 MANDIR=\$(DESTDIR)$mandir
5856 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
5857 SRC_PATH=$source_path
5858 ifndef MAIN_MAKEFILE
5859 SRC_PATH:=\$(SRC_PATH:.%=..%)
5860 endif
5861 CC_IDENT=$cc_ident
5862 ARCH=$arch
5863 INTRINSICS=$intrinsics
5864 CC=$cc
5865 CXX=$cxx
5866 AS=$as
5867 LD=$ld
5868 DEPCC=$dep_cc
5869 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5870 DEPAS=$as
5871 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5872 YASM=$yasmexe
5873 DEPYASM=$yasmexe
5874 AR=$ar
5875 ARFLAGS=$arflags
5876 AR_O=$ar_o
5877 RANLIB=$ranlib
5878 STRIP=$strip
5879 CP=cp -p
5880 LN_S=$ln_s
5881 CPPFLAGS=$CPPFLAGS
5882 CFLAGS=$CFLAGS
5883 CXXFLAGS=$CXXFLAGS
5884 ASFLAGS=$ASFLAGS
5885 AS_C=$AS_C
5886 AS_O=$AS_O
5887 CC_C=$CC_C
5888 CC_E=$CC_E
5889 CC_O=$CC_O
5890 CXX_C=$CXX_C
5891 CXX_O=$CXX_O
5892 LD_O=$LD_O
5893 LD_LIB=$LD_LIB
5894 LD_PATH=$LD_PATH
5895 DLLTOOL=$dlltool
5896 WINDRES=$windres
5897 DEPWINDRES=$dep_cc
5898 DOXYGEN=$doxygen
5899 LDFLAGS=$LDFLAGS
5900 LDEXEFLAGS=$LDEXEFLAGS
5901 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5902 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5903 YASMFLAGS=$YASMFLAGS
5904 BUILDSUF=$build_suffix
5905 PROGSSUF=$progs_suffix
5906 FULLNAME=$FULLNAME
5907 LIBPREF=$LIBPREF
5908 LIBSUF=$LIBSUF
5909 LIBNAME=$LIBNAME
5910 SLIBPREF=$SLIBPREF
5911 SLIBSUF=$SLIBSUF
5912 EXESUF=$EXESUF
5913 EXTRA_VERSION=$extra_version
5914 CCDEP=$CCDEP
5915 CXXDEP=$CXXDEP
5916 CCDEP_FLAGS=$CCDEP_FLAGS
5917 ASDEP=$ASDEP
5918 ASDEP_FLAGS=$ASDEP_FLAGS
5919 CC_DEPFLAGS=$CC_DEPFLAGS
5920 AS_DEPFLAGS=$AS_DEPFLAGS
5921 HOSTCC=$host_cc
5922 HOSTLD=$host_ld
5923 HOSTCFLAGS=$host_cflags
5924 HOSTCPPFLAGS=$host_cppflags
5925 HOSTEXESUF=$HOSTEXESUF
5926 HOSTLDFLAGS=$host_ldflags
5927 HOSTLIBS=$host_libs
5928 DEPHOSTCC=$host_cc
5929 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5930 HOSTCCDEP=$HOSTCCDEP
5931 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5932 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5933 HOSTCC_C=$HOSTCC_C
5934 HOSTCC_O=$HOSTCC_O
5935 HOSTLD_O=$HOSTLD_O
5936 TARGET_EXEC=$target_exec $target_exec_args
5937 TARGET_PATH=$target_path
5938 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5939 CFLAGS-ffplay=$sdl_cflags
5940 ZLIB=$($ldflags_filter -lz)
5941 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5942 EXTRALIBS=$extralibs
5943 COMPAT_OBJS=$compat_objs
5944 EXEOBJS=$exeobjs
5945 INSTALL=$install
5946 LIBTARGET=${LIBTARGET}
5947 SLIBNAME=${SLIBNAME}
5948 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5949 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5950 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5951 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5952 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5953 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5954 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5955 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5956 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5957 NOREDZONE_FLAGS=$noredzone_flags
5958 EOF
5959
5960 get_version(){
5961     lcname=lib${1}
5962     name=$(toupper $lcname)
5963     file=$source_path/$lcname/version.h
5964     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5965     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5966     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5967     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5968     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5969     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5970 }
5971
5972 map 'get_version $v' $LIBRARY_LIST
5973
5974 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5975
5976 print_program_libs(){
5977     eval "program_libs=\$${1}_libs"
5978     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5979 }
5980
5981 map 'print_program_libs $v' $PROGRAM_LIST
5982
5983 cat > $TMPH <<EOF
5984 /* Automatically generated by configure - do not modify! */
5985 #ifndef FFMPEG_CONFIG_H
5986 #define FFMPEG_CONFIG_H
5987 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5988 #define FFMPEG_LICENSE "$(c_escape $license)"
5989 #define CONFIG_THIS_YEAR 2015
5990 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5991 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5992 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5993 #define av_restrict $_restrict
5994 #define EXTERN_PREFIX "${extern_prefix}"
5995 #define EXTERN_ASM ${extern_prefix}
5996 #define BUILDSUF "$build_suffix"
5997 #define SLIBSUF "$SLIBSUF"
5998 #define HAVE_MMX2 HAVE_MMXEXT
5999 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6000 EOF
6001
6002 test -n "$assert_level" &&
6003     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6004
6005 test -n "$malloc_prefix" &&
6006     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6007
6008 if enabled yasm; then
6009     append config_files $TMPASM
6010     printf '' >$TMPASM
6011 fi
6012
6013 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6014
6015
6016 mkdir -p doc
6017 mkdir -p tests
6018 mkdir -p tests/api
6019 echo "@c auto-generated by configure" > doc/config.texi
6020
6021 print_config ARCH_   "$config_files" $ARCH_LIST
6022 print_config HAVE_   "$config_files" $HAVE_LIST
6023 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6024                                      $CONFIG_EXTRA      \
6025                                      $ALL_COMPONENTS    \
6026
6027 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6028 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6029
6030 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6031 cp_if_changed $TMPH config.h
6032 touch .config
6033
6034 enabled yasm && cp_if_changed $TMPASM config.asm
6035
6036 cat > $TMPH <<EOF
6037 /* Generated by ffconf */
6038 #ifndef AVUTIL_AVCONFIG_H
6039 #define AVUTIL_AVCONFIG_H
6040 EOF
6041
6042 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6043
6044 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6045
6046 cp_if_changed $TMPH libavutil/avconfig.h
6047
6048 if test -n "$WARNINGS"; then
6049     printf "\n$WARNINGS"
6050     enabled fatal_warnings && exit 1
6051 fi
6052
6053 # build pkg-config files
6054
6055 lib_version(){
6056     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6057 }
6058
6059 pkgconfig_generate(){
6060     name=$1
6061     shortname=${name#lib}${build_suffix}
6062     comment=$2
6063     version=$3
6064     libs=$4
6065     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6066     requires=${requires%, }
6067     enabled ${name#lib} || return 0
6068     mkdir -p $name
6069     cat <<EOF > $name/$name${build_suffix}.pc
6070 prefix=$prefix
6071 exec_prefix=\${prefix}
6072 libdir=$libdir
6073 includedir=$incdir
6074
6075 Name: $name
6076 Description: $comment
6077 Version: $version
6078 Requires: $(enabled shared || echo $requires)
6079 Requires.private: $(enabled shared && echo $requires)
6080 Conflicts:
6081 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6082 Libs.private: $(enabled shared && echo $libs)
6083 Cflags: -I\${includedir}
6084 EOF
6085
6086 mkdir -p doc/examples/pc-uninstalled
6087 includedir=${source_path}
6088 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6089     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6090 prefix=
6091 exec_prefix=
6092 libdir=\${pcfiledir}/../../../$name
6093 includedir=${includedir}
6094
6095 Name: $name
6096 Description: $comment
6097 Version: $version
6098 Requires: $requires
6099 Conflicts:
6100 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6101 Cflags: -I\${includedir}
6102 EOF
6103 }
6104
6105 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6106 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6107 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6108 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6109 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6110 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6111 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6112 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6113 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"