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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-avutil         disable libavutil build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 200   --enable-frei0r          enable frei0r video filtering [no]
 201   --enable-gnutls          enable gnutls, needed for https support
 202                            if openssl is not used [no]
 203   --disable-iconv          disable iconv [autodetect]
 204   --enable-ladspa          enable LADSPA audio filtering [no]
 205   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 206   --enable-libass          enable libass subtitles rendering,
 207                            needed for subtitles and ass filter [no]
 208   --enable-libbluray       enable BluRay reading using libbluray [no]
 209   --enable-libbs2b         enable bs2b DSP library [no]
 210   --enable-libcaca         enable textual display using libcaca [no]
 211   --enable-libcelt         enable CELT decoding via libcelt [no]
 212   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 213   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 214                            and libraw1394 [no]
 215   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 216   --enable-libfaac         enable AAC encoding via libfaac [no]
 217   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 218   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 219   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 220   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 221   --enable-libgme          enable Game Music Emu via libgme [no]
 222   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 223   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 224   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 225   --enable-libmfx          enable HW acceleration through libmfx
 226   --enable-libmodplug      enable ModPlug via libmodplug [no]
 227   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 228   --enable-libnut          enable NUT (de)muxing via libnut,
 229                            native (de)muxer exists [no]
 230   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 231   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 232   --enable-libopencv       enable video filtering via libopencv [no]
 233   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 234   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 235   --enable-libopus         enable Opus de/encoding via libopus [no]
 236   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 237   --enable-libquvi         enable quvi input via libquvi [no]
 238   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 239   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 240   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 241   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 242   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 243   --enable-libsoxr         enable Include libsoxr resampling [no]
 244   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 245   --enable-libssh          enable SFTP protocol via libssh [no]
 246   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 247   --enable-libtheora       enable Theora encoding via libtheora [no]
 248   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 249   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 250   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 251   --enable-libvidstab      enable video stabilization using vid.stab [no]
 252   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 253   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 254   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 255                            native implementation exists [no]
 256   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 257   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 258   --enable-libwebp         enable WebP encoding via libwebp [no]
 259   --enable-libx264         enable H.264 encoding via x264 [no]
 260   --enable-libx265         enable HEVC encoding via x265 [no]
 261   --enable-libxavs         enable AVS encoding via xavs [no]
 262   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 263   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 264   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 265   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 266   --enable-libxvid         enable Xvid encoding via xvidcore,
 267                            native MPEG-4/Xvid encoder exists [no]
 268   --enable-libzmq          enable message passing via libzmq [no]
 269   --enable-libzvbi         enable teletext support via libzvbi [no]
 270   --disable-lzma           disable lzma [autodetect]
 271   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 272   --enable-mmal            enable decoding via MMAL [no]
 273   --enable-nvenc           enable NVIDIA NVENC support [no]
 274   --enable-openal          enable OpenAL 1.1 capture support [no]
 275   --enable-opencl          enable OpenCL code
 276   --enable-opengl          enable OpenGL rendering [no]
 277   --enable-openssl         enable openssl, needed for https support
 278                            if gnutls is not used [no]
 279   --disable-sdl            disable sdl [autodetect]
 280   --disable-securetransport disable Secure Transport, needed for TLS support
 281                            on OSX if openssl and gnutls are not used [autodetect]
 282   --enable-x11grab         enable X11 grabbing (legacy) [no]
 283   --disable-xlib           disable xlib [autodetect]
 284   --disable-zlib           disable zlib [autodetect]
 285
 286 Toolchain options:
 287   --arch=ARCH              select architecture [$arch]
 288   --cpu=CPU                select the minimum required CPU (affects
 289                            instruction selection, may crash on older CPUs)
 290   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 291   --progs-suffix=SUFFIX    program name suffix []
 292   --enable-cross-compile   assume a cross-compiler is used
 293   --sysroot=PATH           root of cross-build tree
 294   --sysinclude=PATH        location of cross-build system headers
 295   --target-os=OS           compiler targets OS [$target_os]
 296   --target-exec=CMD        command to run executables on target
 297   --target-path=DIR        path to view of build directory on target
 298   --target-samples=DIR     path to samples directory on target
 299   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 300   --toolchain=NAME         set tool defaults according to NAME
 301   --nm=NM                  use nm tool NM [$nm_default]
 302   --ar=AR                  use archive tool AR [$ar_default]
 303   --as=AS                  use assembler AS [$as_default]
 304   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 305   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 306   --cc=CC                  use C compiler CC [$cc_default]
 307   --cxx=CXX                use C compiler CXX [$cxx_default]
 308   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 309   --ld=LD                  use linker LD [$ld_default]
 310   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 311   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 312   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 313   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 314   --host-cc=HOSTCC         use host C compiler HOSTCC
 315   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 316   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 317   --host-ld=HOSTLD         use host linker HOSTLD
 318   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 319   --host-libs=HLIBS        use libs HLIBS when linking for host
 320   --host-os=OS             compiler host OS [$target_os]
 321   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 322   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 323   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 324   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 325   --extra-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     SetConsoleCtrlHandler
1791     setmode
1792     setrlimit
1793     Sleep
1794     strerror_r
1795     sysconf
1796     sysctl
1797     usleep
1798     VirtualAlloc
1799     wglGetProcAddress
1800 "
1801
1802 TOOLCHAIN_FEATURES="
1803     as_dn_directive
1804     as_func
1805     as_object_arch
1806     asm_mod_q
1807     attribute_may_alias
1808     attribute_packed
1809     ebp_available
1810     ebx_available
1811     gnu_as
1812     gnu_windres
1813     ibm_asm
1814     inline_asm_labels
1815     inline_asm_nonlocal_labels
1816     inline_asm_direct_symbol_refs
1817     pragma_deprecated
1818     rsync_contimeout
1819     symver_asm_label
1820     symver_gnu_asm
1821     vfp_args
1822     xform_asm
1823     xmm_clobbers
1824 "
1825
1826 TYPES_LIST="
1827     CONDITION_VARIABLE_Ptr
1828     socklen_t
1829     struct_addrinfo
1830     struct_group_source_req
1831     struct_ip_mreq_source
1832     struct_ipv6_mreq
1833     struct_pollfd
1834     struct_rusage_ru_maxrss
1835     struct_sctp_event_subscribe
1836     struct_sockaddr_in6
1837     struct_sockaddr_sa_len
1838     struct_sockaddr_storage
1839     struct_stat_st_mtim_tv_nsec
1840     struct_v4l2_frmivalenum_discrete
1841 "
1842
1843 HAVE_LIST="
1844     $ARCH_EXT_LIST
1845     $(add_suffix _external $ARCH_EXT_LIST)
1846     $(add_suffix _inline   $ARCH_EXT_LIST)
1847     $ARCH_FEATURES
1848     $ATOMICS_LIST
1849     $BUILTIN_LIST
1850     $HAVE_LIST_CMDLINE
1851     $HAVE_LIST_PUB
1852     $HEADERS_LIST
1853     $INTRINSICS_LIST
1854     $MATH_FUNCS
1855     $SYSTEM_FUNCS
1856     $THREADS_LIST
1857     $TOOLCHAIN_FEATURES
1858     $TYPES_LIST
1859     atomics_native
1860     dos_paths
1861     dxva2api_cobj
1862     dxva2_lib
1863     libc_msvcrt
1864     libdc1394_1
1865     libdc1394_2
1866     makeinfo
1867     makeinfo_html
1868     perl
1869     pod2man
1870     sdl
1871     section_data_rel_ro
1872     texi2html
1873     threads
1874     vaapi_x11
1875     vdpau_x11
1876     xlib
1877 "
1878
1879 # options emitted with CONFIG_ prefix but not available on the command line
1880 CONFIG_EXTRA="
1881     aandcttables
1882     ac3dsp
1883     audio_frame_queue
1884     audiodsp
1885     blockdsp
1886     bswapdsp
1887     cabac
1888     dvprofile
1889     exif
1890     faandct
1891     faanidct
1892     fdctdsp
1893     fmtconvert
1894     frame_thread_encoder
1895     gcrypt
1896     gmp
1897     golomb
1898     gplv3
1899     h263dsp
1900     h264chroma
1901     h264dsp
1902     h264pred
1903     h264qpel
1904     hpeldsp
1905     huffman
1906     huffyuvdsp
1907     huffyuvencdsp
1908     idctdsp
1909     iirfilter
1910     imdct15
1911     intrax8
1912     jpegtables
1913     lgplv3
1914     llauddsp
1915     llviddsp
1916     lpc
1917     me_cmp
1918     mpeg_er
1919     mpegaudio
1920     mpegaudiodsp
1921     mpegvideo
1922     mpegvideoenc
1923     pixblockdsp
1924     qpeldsp
1925     qsv
1926     qsvdec
1927     qsvenc
1928     rangecoder
1929     riffdec
1930     riffenc
1931     rtpdec
1932     rtpenc_chain
1933     sinewin
1934     snappy
1935     startcode
1936     texturedsp
1937     texturedspenc
1938     tpeldsp
1939     videodsp
1940     vp3dsp
1941     wma_freqs
1942 "
1943
1944 CMDLINE_SELECT="
1945     $ARCH_EXT_LIST
1946     $CONFIG_LIST
1947     $HAVE_LIST_CMDLINE
1948     $THREADS_LIST
1949     asm
1950     cross_compile
1951     debug
1952     extra_warnings
1953     logging
1954     lto
1955     optimizations
1956     rpath
1957     stripping
1958 "
1959
1960 PATHS_LIST="
1961     bindir
1962     datadir
1963     docdir
1964     incdir
1965     libdir
1966     mandir
1967     pkgconfigdir
1968     prefix
1969     shlibdir
1970 "
1971
1972 CMDLINE_SET="
1973     $PATHS_LIST
1974     ar
1975     arch
1976     as
1977     assert_level
1978     build_suffix
1979     cc
1980     cpu
1981     cross_prefix
1982     cxx
1983     dep_cc
1984     doxygen
1985     env
1986     extra_version
1987     gas
1988     host_cc
1989     host_cflags
1990     host_ld
1991     host_ldflags
1992     host_libs
1993     host_os
1994     install
1995     ld
1996     logfile
1997     malloc_prefix
1998     nm
1999     optflags
2000     pkg_config
2001     pkg_config_flags
2002     progs_suffix
2003     random_seed
2004     ranlib
2005     samples
2006     strip
2007     sws_max_filter_size
2008     sysinclude
2009     sysroot
2010     target_exec
2011     target_os
2012     target_path
2013     target_samples
2014     tempprefix
2015     toolchain
2016     valgrind
2017     yasmexe
2018 "
2019
2020 CMDLINE_APPEND="
2021     extra_cflags
2022     extra_cxxflags
2023     host_cppflags
2024 "
2025
2026 # code dependency declarations
2027
2028 # architecture extensions
2029
2030 armv5te_deps="arm"
2031 armv6_deps="arm"
2032 armv6t2_deps="arm"
2033 armv8_deps="aarch64"
2034 neon_deps_any="aarch64 arm"
2035 intrinsics_neon_deps="neon"
2036 vfp_deps_any="aarch64 arm"
2037 vfpv3_deps="vfp"
2038 setend_deps="arm"
2039
2040 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2041
2042 mipsfpu_deps="mips"
2043 mipsdspr1_deps="mips"
2044 mipsdspr2_deps="mips"
2045 mips32r2_deps="mips"
2046 mips32r5_deps="mips"
2047 mips64r6_deps="mips"
2048 msa_deps="mips"
2049 loongson3_deps="mips"
2050
2051 altivec_deps="ppc"
2052 dcbzl_deps="ppc"
2053 ldbrx_deps="ppc"
2054 ppc4xx_deps="ppc"
2055 vsx_deps="altivec"
2056 power8_deps="vsx"
2057
2058 cpunop_deps="i686"
2059 x86_64_select="i686"
2060 x86_64_suggest="fast_cmov"
2061
2062 amd3dnow_deps="mmx"
2063 amd3dnowext_deps="amd3dnow"
2064 i686_deps="x86"
2065 mmx_deps="x86"
2066 mmxext_deps="mmx"
2067 sse_deps="mmxext"
2068 sse2_deps="sse"
2069 sse3_deps="sse2"
2070 ssse3_deps="sse3"
2071 sse4_deps="ssse3"
2072 sse42_deps="sse4"
2073 avx_deps="sse42"
2074 xop_deps="avx"
2075 fma3_deps="avx"
2076 fma4_deps="avx"
2077 avx2_deps="avx"
2078
2079 mmx_external_deps="yasm"
2080 mmx_inline_deps="inline_asm"
2081 mmx_suggest="mmx_external mmx_inline"
2082
2083 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2084     eval dep=\$${ext}_deps
2085     eval ${ext}_external_deps='"${dep}_external"'
2086     eval ${ext}_inline_deps='"${dep}_inline"'
2087     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2088 done
2089
2090 aligned_stack_if_any="aarch64 ppc x86"
2091 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2092 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2093 fast_unaligned_if_any="aarch64 ppc x86"
2094 simd_align_16_if_any="altivec neon sse"
2095
2096 # system capabilities
2097 symver_if_any="symver_asm_label symver_gnu_asm"
2098 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2099
2100 # threading support
2101 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2102 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2103 atomics_win32_if="MemoryBarrier"
2104 atomics_native_if_any="$ATOMICS_LIST"
2105 w32threads_deps="atomics_native"
2106 threads_if_any="$THREADS_LIST"
2107
2108 # subsystems
2109 dct_select="rdft"
2110 error_resilience_select="me_cmp"
2111 faandct_deps="faan fdctdsp"
2112 faanidct_deps="faan idctdsp"
2113 frame_thread_encoder_deps="encoders threads"
2114 intrax8_select="error_resilience"
2115 mdct_select="fft"
2116 rdft_select="fft"
2117 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2118 mpeg_er_select="error_resilience"
2119 mpegaudio_select="mpegaudiodsp"
2120 mpegaudiodsp_select="dct"
2121 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2122 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2123 qsvdec_select="qsv"
2124 qsvenc_select="qsv"
2125
2126 # decoders / encoders
2127 aac_decoder_select="imdct15 mdct sinewin"
2128 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2129 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2130 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2131 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2132 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2133 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2134 aic_decoder_select="golomb idctdsp"
2135 alac_encoder_select="lpc"
2136 als_decoder_select="bswapdsp"
2137 amrnb_decoder_select="lsp"
2138 amrwb_decoder_select="lsp"
2139 amv_decoder_select="sp5x_decoder exif"
2140 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2141 ape_decoder_select="bswapdsp llauddsp"
2142 apng_decoder_select="zlib"
2143 apng_encoder_select="huffyuvencdsp zlib"
2144 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2145 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2146 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2147 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2148 atrac1_decoder_select="mdct sinewin"
2149 atrac3_decoder_select="mdct"
2150 atrac3p_decoder_select="mdct sinewin"
2151 avrn_decoder_select="exif jpegtables"
2152 bink_decoder_select="blockdsp hpeldsp"
2153 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2154 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2155 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2156 cllc_decoder_select="bswapdsp"
2157 comfortnoise_encoder_select="lpc"
2158 cook_decoder_select="audiodsp mdct sinewin"
2159 cscd_decoder_select="lzo"
2160 cscd_decoder_suggest="zlib"
2161 dca_decoder_select="fmtconvert mdct"
2162 dds_decoder_select="texturedsp"
2163 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2164 dnxhd_decoder_select="blockdsp idctdsp"
2165 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2166 dvvideo_decoder_select="dvprofile idctdsp"
2167 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2168 dxa_decoder_select="zlib"
2169 eac3_decoder_select="ac3_decoder"
2170 eac3_encoder_select="ac3_encoder"
2171 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2172 eatgq_decoder_select="aandcttables"
2173 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2174 exr_decoder_select="zlib"
2175 ffv1_decoder_select="golomb rangecoder"
2176 ffv1_encoder_select="rangecoder"
2177 ffvhuff_decoder_select="huffyuv_decoder"
2178 ffvhuff_encoder_select="huffyuv_encoder"
2179 fic_decoder_select="golomb"
2180 flac_decoder_select="golomb"
2181 flac_encoder_select="bswapdsp golomb lpc"
2182 flashsv_decoder_select="zlib"
2183 flashsv_encoder_select="zlib"
2184 flashsv2_encoder_select="zlib"
2185 flashsv2_decoder_select="zlib"
2186 flv_decoder_select="h263_decoder"
2187 flv_encoder_select="h263_encoder"
2188 fourxm_decoder_select="blockdsp bswapdsp"
2189 fraps_decoder_select="bswapdsp huffman"
2190 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2191 g729_decoder_select="audiodsp"
2192 h261_decoder_select="mpeg_er mpegvideo"
2193 h261_encoder_select="aandcttables mpegvideoenc"
2194 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2195 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2196 h263i_decoder_select="h263_decoder"
2197 h263p_decoder_select="h263_decoder"
2198 h263p_encoder_select="h263_encoder"
2199 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2200 h264_decoder_suggest="error_resilience"
2201 h264_qsv_decoder_deps="libmfx"
2202 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2203 h264_qsv_encoder_deps="libmfx"
2204 h264_qsv_encoder_select="qsvenc"
2205 hap_decoder_select="snappy texturedsp"
2206 hap_encoder_deps="libsnappy"
2207 hap_encoder_select="texturedspenc"
2208 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2209 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2210 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2211 iac_decoder_select="imc_decoder"
2212 imc_decoder_select="bswapdsp fft mdct sinewin"
2213 indeo3_decoder_select="hpeldsp"
2214 interplay_video_decoder_select="hpeldsp"
2215 jpegls_decoder_select="golomb mjpeg_decoder"
2216 jpegls_encoder_select="golomb"
2217 jv_decoder_select="blockdsp"
2218 lagarith_decoder_select="huffyuvdsp"
2219 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2220 loco_decoder_select="golomb"
2221 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2222 metasound_decoder_select="lsp mdct sinewin"
2223 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2224 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2225 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2226 mjpegb_decoder_select="mjpeg_decoder"
2227 mlp_decoder_select="mlp_parser"
2228 motionpixels_decoder_select="bswapdsp"
2229 mp1_decoder_select="mpegaudio"
2230 mp1float_decoder_select="mpegaudio"
2231 mp2_decoder_select="mpegaudio"
2232 mp2float_decoder_select="mpegaudio"
2233 mp3_decoder_select="mpegaudio"
2234 mp3adu_decoder_select="mpegaudio"
2235 mp3adufloat_decoder_select="mpegaudio"
2236 mp3float_decoder_select="mpegaudio"
2237 mp3on4_decoder_select="mpegaudio"
2238 mp3on4float_decoder_select="mpegaudio"
2239 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2240 mpc8_decoder_select="mpegaudiodsp"
2241 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2242 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2243 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2244 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2245 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2246 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2247 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2248 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2249 mpeg4_encoder_select="h263_encoder"
2250 msmpeg4v1_decoder_select="h263_decoder"
2251 msmpeg4v2_decoder_select="h263_decoder"
2252 msmpeg4v2_encoder_select="h263_encoder"
2253 msmpeg4v3_decoder_select="h263_decoder"
2254 msmpeg4v3_encoder_select="h263_encoder"
2255 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2256 mxpeg_decoder_select="mjpeg_decoder"
2257 nellymoser_decoder_select="mdct sinewin"
2258 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2259 nuv_decoder_select="idctdsp lzo"
2260 on2avc_decoder_select="mdct"
2261 opus_decoder_deps="swresample"
2262 opus_decoder_select="imdct15"
2263 png_decoder_select="zlib"
2264 png_encoder_select="huffyuvencdsp zlib"
2265 prores_decoder_select="blockdsp idctdsp"
2266 prores_encoder_select="fdctdsp"
2267 qcelp_decoder_select="lsp"
2268 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2269 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2270 ra_144_decoder_select="audiodsp"
2271 ralf_decoder_select="golomb"
2272 rawvideo_decoder_select="bswapdsp"
2273 rtjpeg_decoder_select="me_cmp"
2274 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2275 rv10_encoder_select="h263_encoder"
2276 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2277 rv20_encoder_select="h263_encoder"
2278 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2279 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2280 shorten_decoder_select="golomb"
2281 sipr_decoder_select="lsp"
2282 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2283 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2284 sonic_decoder_select="golomb rangecoder"
2285 sonic_encoder_select="golomb rangecoder"
2286 sonic_ls_encoder_select="golomb rangecoder"
2287 sp5x_decoder_select="mjpeg_decoder"
2288 svq1_decoder_select="hpeldsp"
2289 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2290 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2291 svq3_decoder_suggest="zlib"
2292 tak_decoder_select="audiodsp"
2293 tdsc_decoder_select="zlib mjpeg_decoder"
2294 theora_decoder_select="vp3_decoder"
2295 thp_decoder_select="mjpeg_decoder"
2296 tiff_decoder_suggest="zlib lzma"
2297 tiff_encoder_suggest="zlib"
2298 truehd_decoder_select="mlp_parser"
2299 truemotion2_decoder_select="bswapdsp"
2300 truespeech_decoder_select="bswapdsp"
2301 tscc_decoder_select="zlib"
2302 twinvq_decoder_select="mdct lsp sinewin"
2303 txd_decoder_select="texturedsp"
2304 utvideo_decoder_select="bswapdsp"
2305 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2306 vble_decoder_select="huffyuvdsp"
2307 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2308 vc1image_decoder_select="vc1_decoder"
2309 vorbis_decoder_select="mdct"
2310 vorbis_encoder_select="mdct"
2311 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2312 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2313 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2314 vp6a_decoder_select="vp6_decoder"
2315 vp6f_decoder_select="vp6_decoder"
2316 vp7_decoder_select="h264pred videodsp"
2317 vp8_decoder_select="h264pred videodsp"
2318 vp9_decoder_select="videodsp vp9_parser"
2319 webp_decoder_select="vp8_decoder"
2320 wmalossless_decoder_select="llauddsp"
2321 wmapro_decoder_select="mdct sinewin wma_freqs"
2322 wmav1_decoder_select="mdct sinewin wma_freqs"
2323 wmav1_encoder_select="mdct sinewin wma_freqs"
2324 wmav2_decoder_select="mdct sinewin wma_freqs"
2325 wmav2_encoder_select="mdct sinewin wma_freqs"
2326 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2327 wmv1_decoder_select="h263_decoder"
2328 wmv1_encoder_select="h263_encoder"
2329 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2330 wmv2_encoder_select="h263_encoder"
2331 wmv3_decoder_select="vc1_decoder"
2332 wmv3image_decoder_select="wmv3_decoder"
2333 zerocodec_decoder_select="zlib"
2334 zlib_decoder_select="zlib"
2335 zlib_encoder_select="zlib"
2336 zmbv_decoder_select="zlib"
2337 zmbv_encoder_select="zlib"
2338
2339 # hardware accelerators
2340 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2341 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2342 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2343 vaapi_deps="va_va_h"
2344 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2345 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2346 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2347 xvmc_deps="X11_extensions_XvMClib_h"
2348
2349 h263_vaapi_hwaccel_deps="vaapi"
2350 h263_vaapi_hwaccel_select="h263_decoder"
2351 h263_vdpau_hwaccel_deps="vdpau"
2352 h263_vdpau_hwaccel_select="h263_decoder"
2353 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2354 h264_d3d11va_hwaccel_deps="d3d11va"
2355 h264_d3d11va_hwaccel_select="h264_decoder"
2356 h264_dxva2_hwaccel_deps="dxva2"
2357 h264_dxva2_hwaccel_select="h264_decoder"
2358 h264_mmal_decoder_deps="mmal"
2359 h264_mmal_hwaccel_deps="mmal"
2360 h264_mmal_decoder_select="h264_decoder"
2361 h264_mmal_encoder_deps="mmal"
2362 h264_qsv_hwaccel_deps="libmfx"
2363 h264_vaapi_hwaccel_deps="vaapi"
2364 h264_vaapi_hwaccel_select="h264_decoder"
2365 h264_vda_decoder_deps="vda"
2366 h264_vda_decoder_select="h264_decoder"
2367 h264_vda_hwaccel_deps="vda"
2368 h264_vda_hwaccel_select="h264_decoder"
2369 h264_vda_old_hwaccel_deps="vda"
2370 h264_vda_old_hwaccel_select="h264_decoder"
2371 h264_vdpau_decoder_deps="vdpau"
2372 h264_vdpau_decoder_select="h264_decoder"
2373 h264_vdpau_hwaccel_deps="vdpau"
2374 h264_vdpau_hwaccel_select="h264_decoder"
2375 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2376 hevc_d3d11va_hwaccel_select="hevc_decoder"
2377 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2378 hevc_dxva2_hwaccel_select="hevc_decoder"
2379 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2380 hevc_vdpau_hwaccel_select="hevc_decoder"
2381 mpeg_vdpau_decoder_deps="vdpau"
2382 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2383 mpeg_xvmc_hwaccel_deps="xvmc"
2384 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2385 mpeg1_vdpau_decoder_deps="vdpau"
2386 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2387 mpeg1_vdpau_hwaccel_deps="vdpau"
2388 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2389 mpeg1_xvmc_hwaccel_deps="xvmc"
2390 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2391 mpeg2_crystalhd_decoder_select="crystalhd"
2392 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2393 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2394 mpeg2_dxva2_hwaccel_deps="dxva2"
2395 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2396 mpeg2_vaapi_hwaccel_deps="vaapi"
2397 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2398 mpeg2_vdpau_hwaccel_deps="vdpau"
2399 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2400 mpeg2_xvmc_hwaccel_deps="xvmc"
2401 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2402 mpeg4_crystalhd_decoder_select="crystalhd"
2403 mpeg4_vaapi_hwaccel_deps="vaapi"
2404 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2405 mpeg4_vdpau_decoder_deps="vdpau"
2406 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2407 mpeg4_vdpau_hwaccel_deps="vdpau"
2408 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2409 msmpeg4_crystalhd_decoder_select="crystalhd"
2410 vc1_crystalhd_decoder_select="crystalhd"
2411 vc1_d3d11va_hwaccel_deps="d3d11va"
2412 vc1_d3d11va_hwaccel_select="vc1_decoder"
2413 vc1_dxva2_hwaccel_deps="dxva2"
2414 vc1_dxva2_hwaccel_select="vc1_decoder"
2415 vc1_vaapi_hwaccel_deps="vaapi"
2416 vc1_vaapi_hwaccel_select="vc1_decoder"
2417 vc1_vdpau_decoder_deps="vdpau"
2418 vc1_vdpau_decoder_select="vc1_decoder"
2419 vc1_vdpau_hwaccel_deps="vdpau"
2420 vc1_vdpau_hwaccel_select="vc1_decoder"
2421 wmv3_crystalhd_decoder_select="crystalhd"
2422 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2423 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2424 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2425 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2426 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2427
2428 # parsers
2429 h264_parser_select="h264_decoder"
2430 hevc_parser_select="hevc_decoder"
2431 mpegvideo_parser_select="mpegvideo"
2432 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2433 vc1_parser_select="mpegvideo startcode vc1_decoder"
2434
2435 # bitstream_filters
2436 mjpeg2jpeg_bsf_select="jpegtables"
2437
2438 # external libraries
2439 libaacplus_encoder_deps="libaacplus"
2440 libcelt_decoder_deps="libcelt"
2441 libdcadec_decoder_deps="libdcadec"
2442 libfaac_encoder_deps="libfaac"
2443 libfaac_encoder_select="audio_frame_queue"
2444 libfdk_aac_decoder_deps="libfdk_aac"
2445 libfdk_aac_encoder_deps="libfdk_aac"
2446 libfdk_aac_encoder_select="audio_frame_queue"
2447 libgme_demuxer_deps="libgme"
2448 libgsm_decoder_deps="libgsm"
2449 libgsm_encoder_deps="libgsm"
2450 libgsm_ms_decoder_deps="libgsm"
2451 libgsm_ms_encoder_deps="libgsm"
2452 libilbc_decoder_deps="libilbc"
2453 libilbc_encoder_deps="libilbc"
2454 libmodplug_demuxer_deps="libmodplug"
2455 libmp3lame_encoder_deps="libmp3lame"
2456 libmp3lame_encoder_select="audio_frame_queue"
2457 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2458 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2459 libopencore_amrnb_encoder_select="audio_frame_queue"
2460 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2461 libopenh264_encoder_deps="libopenh264"
2462 libopenjpeg_decoder_deps="libopenjpeg"
2463 libopenjpeg_encoder_deps="libopenjpeg"
2464 libopus_decoder_deps="libopus"
2465 libopus_encoder_deps="libopus"
2466 libopus_encoder_select="audio_frame_queue"
2467 libquvi_demuxer_deps="libquvi"
2468 libschroedinger_decoder_deps="libschroedinger"
2469 libschroedinger_encoder_deps="libschroedinger"
2470 libshine_encoder_deps="libshine"
2471 libshine_encoder_select="audio_frame_queue"
2472 libspeex_decoder_deps="libspeex"
2473 libspeex_encoder_deps="libspeex"
2474 libspeex_encoder_select="audio_frame_queue"
2475 libstagefright_h264_decoder_deps="libstagefright_h264"
2476 libtheora_encoder_deps="libtheora"
2477 libtwolame_encoder_deps="libtwolame"
2478 libvo_aacenc_encoder_deps="libvo_aacenc"
2479 libvo_aacenc_encoder_select="audio_frame_queue"
2480 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2481 libvorbis_decoder_deps="libvorbis"
2482 libvorbis_encoder_deps="libvorbis"
2483 libvorbis_encoder_select="audio_frame_queue"
2484 libvpx_vp8_decoder_deps="libvpx"
2485 libvpx_vp8_encoder_deps="libvpx"
2486 libvpx_vp9_decoder_deps="libvpx"
2487 libvpx_vp9_encoder_deps="libvpx"
2488 libwavpack_encoder_deps="libwavpack"
2489 libwebp_encoder_deps="libwebp"
2490 libwebp_anim_encoder_deps="libwebp"
2491 libx264_encoder_deps="libx264"
2492 libx264rgb_encoder_deps="libx264"
2493 libx264rgb_encoder_select="libx264_encoder"
2494 libx265_encoder_deps="libx265"
2495 libxavs_encoder_deps="libxavs"
2496 libxvid_encoder_deps="libxvid"
2497 libutvideo_decoder_deps="libutvideo"
2498 libutvideo_encoder_deps="libutvideo"
2499 libzvbi_teletext_decoder_deps="libzvbi"
2500 nvenc_encoder_deps="nvenc"
2501 nvenc_h264_encoder_deps="nvenc"
2502 nvenc_hevc_encoder_deps="nvenc"
2503
2504 # demuxers / muxers
2505 ac3_demuxer_select="ac3_parser"
2506 asf_demuxer_select="riffdec"
2507 asf_o_demuxer_select="riffdec"
2508 asf_muxer_select="riffenc"
2509 asf_stream_muxer_select="asf_muxer"
2510 avi_demuxer_select="riffdec exif"
2511 avi_muxer_select="riffenc"
2512 avisynth_demuxer_deps="avisynth"
2513 avisynth_demuxer_select="riffdec"
2514 caf_demuxer_select="riffdec"
2515 dash_muxer_select="mp4_muxer"
2516 dirac_demuxer_select="dirac_parser"
2517 dts_demuxer_select="dca_parser"
2518 dtshd_demuxer_select="dca_parser"
2519 dv_demuxer_select="dvprofile"
2520 dv_muxer_select="dvprofile"
2521 dxa_demuxer_select="riffdec"
2522 eac3_demuxer_select="ac3_parser"
2523 f4v_muxer_select="mov_muxer"
2524 flac_demuxer_select="flac_parser"
2525 hds_muxer_select="flv_muxer"
2526 hls_muxer_select="mpegts_muxer"
2527 image2_alias_pix_demuxer_select="image2_demuxer"
2528 image2_brender_pix_demuxer_select="image2_demuxer"
2529 ipod_muxer_select="mov_muxer"
2530 ismv_muxer_select="mov_muxer"
2531 libnut_demuxer_deps="libnut"
2532 libnut_muxer_deps="libnut"
2533 matroska_audio_muxer_select="matroska_muxer"
2534 matroska_demuxer_select="riffdec"
2535 matroska_demuxer_suggest="bzlib lzo zlib"
2536 matroska_muxer_select="riffenc"
2537 mmf_muxer_select="riffenc"
2538 mov_demuxer_select="riffdec"
2539 mov_demuxer_suggest="zlib"
2540 mov_muxer_select="riffenc rtpenc_chain"
2541 mp3_demuxer_select="mpegaudio_parser"
2542 mp4_muxer_select="mov_muxer"
2543 mpegts_muxer_select="adts_muxer latm_muxer"
2544 mpegtsraw_demuxer_select="mpegts_demuxer"
2545 mxf_d10_muxer_select="mxf_muxer"
2546 mxf_opatom_muxer_select="mxf_muxer"
2547 nut_muxer_select="riffenc"
2548 nuv_demuxer_select="riffdec"
2549 oga_muxer_select="ogg_muxer"
2550 ogg_demuxer_select="golomb"
2551 opus_muxer_select="ogg_muxer"
2552 psp_muxer_select="mov_muxer"
2553 rtp_demuxer_select="sdp_demuxer"
2554 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2555 rtsp_demuxer_select="http_protocol rtpdec"
2556 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2557 sap_demuxer_select="sdp_demuxer"
2558 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2559 sdp_demuxer_select="rtpdec"
2560 smoothstreaming_muxer_select="ismv_muxer"
2561 spdif_muxer_select="aac_parser"
2562 spx_muxer_select="ogg_muxer"
2563 tak_demuxer_select="tak_parser"
2564 tg2_muxer_select="mov_muxer"
2565 tgp_muxer_select="mov_muxer"
2566 vobsub_demuxer_select="mpegps_demuxer"
2567 w64_demuxer_select="wav_demuxer"
2568 w64_muxer_select="wav_muxer"
2569 wav_demuxer_select="riffdec"
2570 wav_muxer_select="riffenc"
2571 webm_muxer_select="riffenc"
2572 wtv_demuxer_select="riffdec"
2573 wtv_muxer_select="riffenc"
2574 xmv_demuxer_select="riffdec"
2575 xwma_demuxer_select="riffdec"
2576
2577 # indevs / outdevs
2578 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2579 alsa_outdev_deps="alsa_asoundlib_h"
2580 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2581 avfoundation_indev_select="avfoundation"
2582 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2583 caca_outdev_deps="libcaca"
2584 decklink_outdev_deps="decklink pthreads"
2585 decklink_outdev_extralibs="-lstdc++"
2586 decklink_indev_deps="decklink pthreads"
2587 decklink_indev_extralibs="-lstdc++"
2588 dshow_indev_deps="IBaseFilter"
2589 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2590 dv1394_indev_deps="dv1394"
2591 dv1394_indev_select="dv_demuxer"
2592 fbdev_indev_deps="linux_fb_h"
2593 fbdev_outdev_deps="linux_fb_h"
2594 gdigrab_indev_deps="CreateDIBSection"
2595 gdigrab_indev_extralibs="-lgdi32"
2596 gdigrab_indev_select="bmp_decoder"
2597 iec61883_indev_deps="libiec61883"
2598 jack_indev_deps="jack_jack_h sem_timedwait"
2599 lavfi_indev_deps="avfilter"
2600 libcdio_indev_deps="libcdio"
2601 libdc1394_indev_deps="libdc1394"
2602 libv4l2_indev_deps="libv4l2"
2603 openal_indev_deps="openal"
2604 opengl_outdev_deps="opengl"
2605 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2606 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2607 pulse_indev_deps="libpulse"
2608 pulse_outdev_deps="libpulse"
2609 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2610 qtkit_indev_select="qtkit"
2611 sdl_outdev_deps="sdl"
2612 sndio_indev_deps="sndio_h"
2613 sndio_outdev_deps="sndio_h"
2614 v4l_indev_deps="linux_videodev_h"
2615 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2616 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2617 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2618 vfwcap_indev_extralibs="-lavicap32"
2619 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2620 xv_outdev_extralibs="-lXv -lX11 -lXext"
2621 x11grab_indev_deps="x11grab"
2622 x11grab_xcb_indev_deps="libxcb"
2623
2624 # protocols
2625 bluray_protocol_deps="libbluray"
2626 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2627 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2628 ffrtmpcrypt_protocol_select="tcp_protocol"
2629 ffrtmphttp_protocol_deps="!librtmp_protocol"
2630 ffrtmphttp_protocol_select="http_protocol"
2631 ftp_protocol_select="tcp_protocol"
2632 gopher_protocol_select="network"
2633 http_protocol_select="tcp_protocol"
2634 httpproxy_protocol_select="tcp_protocol"
2635 https_protocol_select="tls_protocol"
2636 icecast_protocol_select="http_protocol"
2637 librtmp_protocol_deps="librtmp"
2638 librtmpe_protocol_deps="librtmp"
2639 librtmps_protocol_deps="librtmp"
2640 librtmpt_protocol_deps="librtmp"
2641 librtmpte_protocol_deps="librtmp"
2642 libsmbclient_protocol_deps="libsmbclient gplv3"
2643 libssh_protocol_deps="libssh"
2644 mmsh_protocol_select="http_protocol"
2645 mmst_protocol_select="network"
2646 rtmp_protocol_deps="!librtmp_protocol"
2647 rtmp_protocol_select="tcp_protocol"
2648 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2649 rtmps_protocol_deps="!librtmp_protocol"
2650 rtmps_protocol_select="tls_protocol"
2651 rtmpt_protocol_select="ffrtmphttp_protocol"
2652 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2653 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2654 rtp_protocol_select="udp_protocol"
2655 sctp_protocol_deps="struct_sctp_event_subscribe"
2656 sctp_protocol_select="network"
2657 srtp_protocol_select="rtp_protocol"
2658 tcp_protocol_select="network"
2659 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2660 tls_gnutls_protocol_select="tcp_protocol"
2661 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2662 tls_openssl_protocol_select="tcp_protocol"
2663 tls_securetransport_protocol_deps="securetransport"
2664 tls_securetransport_protocol_select="tcp_protocol"
2665 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2666 udp_protocol_select="network"
2667 udplite_protocol_select="network"
2668 unix_protocol_deps="sys_un_h"
2669 unix_protocol_select="network"
2670
2671 # filters
2672 amovie_filter_deps="avcodec avformat"
2673 aresample_filter_deps="swresample"
2674 ass_filter_deps="libass"
2675 asyncts_filter_deps="avresample"
2676 atempo_filter_deps="avcodec"
2677 atempo_filter_select="rdft"
2678 azmq_filter_deps="libzmq"
2679 blackframe_filter_deps="gpl"
2680 boxblur_filter_deps="gpl"
2681 bs2b_filter_deps="libbs2b"
2682 colormatrix_filter_deps="gpl"
2683 cover_rect_filter_deps="avcodec avformat gpl"
2684 cropdetect_filter_deps="gpl"
2685 delogo_filter_deps="gpl"
2686 deshake_filter_select="pixelutils"
2687 drawtext_filter_deps="libfreetype"
2688 ebur128_filter_deps="gpl"
2689 eq_filter_deps="gpl"
2690 fftfilt_filter_deps="avcodec"
2691 fftfilt_filter_select="rdft"
2692 flite_filter_deps="libflite"
2693 find_rect_filter_deps="avcodec avformat gpl"
2694 frei0r_filter_deps="frei0r dlopen"
2695 frei0r_src_filter_deps="frei0r dlopen"
2696 fspp_filter_deps="gpl"
2697 geq_filter_deps="gpl"
2698 histeq_filter_deps="gpl"
2699 hqdn3d_filter_deps="gpl"
2700 interlace_filter_deps="gpl"
2701 kerndeint_filter_deps="gpl"
2702 ladspa_filter_deps="ladspa dlopen"
2703 mcdeint_filter_deps="avcodec gpl"
2704 movie_filter_deps="avcodec avformat"
2705 mpdecimate_filter_deps="gpl"
2706 mpdecimate_filter_select="pixelutils"
2707 mptestsrc_filter_deps="gpl"
2708 negate_filter_deps="lut_filter"
2709 perspective_filter_deps="gpl"
2710 pp7_filter_deps="gpl"
2711 ocv_filter_deps="libopencv"
2712 owdenoise_filter_deps="gpl"
2713 pan_filter_deps="swresample"
2714 phase_filter_deps="gpl"
2715 pp_filter_deps="gpl postproc"
2716 pullup_filter_deps="gpl"
2717 removelogo_filter_deps="avcodec avformat swscale"
2718 repeatfields_filter_deps="gpl"
2719 resample_filter_deps="avresample"
2720 sab_filter_deps="gpl swscale"
2721 scale_filter_deps="swscale"
2722 select_filter_select="pixelutils"
2723 smartblur_filter_deps="gpl swscale"
2724 showcqt_filter_deps="avcodec"
2725 showcqt_filter_select="fft"
2726 showspectrum_filter_deps="avcodec"
2727 showspectrum_filter_select="rdft"
2728 spp_filter_deps="gpl avcodec"
2729 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2730 stereo3d_filter_deps="gpl"
2731 subtitles_filter_deps="avformat avcodec libass"
2732 super2xsai_filter_deps="gpl"
2733 tinterlace_filter_deps="gpl"
2734 vidstabdetect_filter_deps="libvidstab"
2735 vidstabtransform_filter_deps="libvidstab"
2736 pixfmts_super2xsai_test_deps="super2xsai_filter"
2737 tinterlace_merge_test_deps="tinterlace_filter"
2738 tinterlace_pad_test_deps="tinterlace_filter"
2739 uspp_filter_deps="gpl avcodec"
2740 zmq_filter_deps="libzmq"
2741 zoompan_filter_deps="swscale"
2742
2743 # examples
2744 avio_reading="avformat avcodec avutil"
2745 avio_list_dir="avformat avutil"
2746 avcodec_example_deps="avcodec avutil"
2747 decoding_encoding_example_deps="avcodec avformat avutil"
2748 demuxing_decoding_example_deps="avcodec avformat avutil"
2749 extract_mvs_example_deps="avcodec avformat avutil"
2750 filter_audio_example_deps="avfilter avutil"
2751 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2752 filtering_video_example_deps="avfilter avcodec avformat avutil"
2753 metadata_example_deps="avformat avutil"
2754 muxing_example_deps="avcodec avformat avutil swscale"
2755 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2756 remuxing_example_deps="avcodec avformat avutil"
2757 resampling_audio_example_deps="avutil swresample"
2758 scaling_video_example_deps="avutil swscale"
2759 transcode_aac_example_deps="avcodec avformat swresample"
2760 transcoding_example_deps="avfilter avcodec avformat avutil"
2761
2762 # libraries, in linking order
2763 avcodec_deps="avutil"
2764 avdevice_deps="avformat avcodec avutil"
2765 avfilter_deps="avutil"
2766 avformat_deps="avcodec avutil"
2767 avresample_deps="avutil"
2768 postproc_deps="avutil gpl"
2769 swresample_deps="avutil"
2770 swscale_deps="avutil"
2771
2772 # programs
2773 ffmpeg_deps="avcodec avfilter avformat swresample"
2774 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2775                null_filter
2776                setpts_filter trim_filter"
2777 ffplay_deps="avcodec avformat swscale swresample sdl"
2778 ffplay_libs='$sdl_libs'
2779 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2780 ffprobe_deps="avcodec avformat"
2781 ffserver_deps="avformat fork sarestart"
2782 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2783
2784 # documentation
2785 podpages_deps="perl"
2786 manpages_deps="perl pod2man"
2787 htmlpages_deps="perl"
2788 htmlpages_deps_any="makeinfo_html texi2html"
2789 txtpages_deps="perl makeinfo"
2790 doc_deps_any="manpages htmlpages podpages txtpages"
2791
2792 # default parameters
2793
2794 logfile="config.log"
2795
2796 # installation paths
2797 prefix_default="/usr/local"
2798 bindir_default='${prefix}/bin'
2799 datadir_default='${prefix}/share/ffmpeg'
2800 docdir_default='${prefix}/share/doc/ffmpeg'
2801 incdir_default='${prefix}/include'
2802 libdir_default='${prefix}/lib'
2803 mandir_default='${prefix}/share/man'
2804
2805 # toolchain
2806 ar_default="ar"
2807 cc_default="gcc"
2808 cxx_default="g++"
2809 host_cc_default="gcc"
2810 cp_f="cp -f"
2811 doxygen_default="doxygen"
2812 install="install"
2813 ln_s="ln -s -f"
2814 nm_default="nm -g"
2815 objformat="elf"
2816 pkg_config_default=pkg-config
2817 ranlib_default="ranlib"
2818 strip_default="strip"
2819 yasmexe_default="yasm"
2820 windres_default="windres"
2821
2822 # OS
2823 target_os_default=$(tolower $(uname -s))
2824 host_os=$target_os_default
2825
2826 # machine
2827 if test "$target_os_default" = aix; then
2828     arch_default=$(uname -p)
2829     strip_default="strip -X32_64"
2830 else
2831     arch_default=$(uname -m)
2832 fi
2833 cpu="generic"
2834 intrinsics="none"
2835
2836 # configurable options
2837 enable $PROGRAM_LIST
2838 enable $DOCUMENT_LIST
2839 enable $EXAMPLE_LIST
2840 enable $(filter_out avresample $LIBRARY_LIST)
2841 enable stripping
2842
2843 enable asm
2844 enable debug
2845 enable doc
2846 enable faan faandct faanidct
2847 enable optimizations
2848 enable runtime_cpudetect
2849 enable safe_bitstream_reader
2850 enable static
2851 enable swscale_alpha
2852 enable valgrind_backtrace
2853
2854 sws_max_filter_size_default=256
2855 set_default sws_max_filter_size
2856
2857 # Enable hwaccels by default.
2858 enable d3d11va dxva2 vaapi vda vdpau xvmc
2859 enable xlib
2860
2861 # build settings
2862 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2863 LIBPREF="lib"
2864 LIBSUF=".a"
2865 FULLNAME='$(NAME)$(BUILDSUF)'
2866 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2867 SLIBPREF="lib"
2868 SLIBSUF=".so"
2869 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2870 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2871 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2872 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2873 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2874 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2875
2876 asflags_filter=echo
2877 cflags_filter=echo
2878 ldflags_filter=echo
2879
2880 AS_C='-c'
2881 AS_O='-o $@'
2882 CC_C='-c'
2883 CC_E='-E -o $@'
2884 CC_O='-o $@'
2885 CXX_C='-c'
2886 CXX_O='-o $@'
2887 LD_O='-o $@'
2888 LD_LIB='-l%'
2889 LD_PATH='-L'
2890 HOSTCC_C='-c'
2891 HOSTCC_E='-E -o $@'
2892 HOSTCC_O='-o $@'
2893 HOSTLD_O='-o $@'
2894
2895 host_libs='-lm'
2896 host_cflags_filter=echo
2897 host_ldflags_filter=echo
2898
2899 target_path='$(CURDIR)'
2900
2901 # since the object filename is not given with the -MM flag, the compiler
2902 # is only able to print the basename, and we must add the path ourselves
2903 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2904 DEPFLAGS='-MM'
2905
2906 # find source path
2907 if test -f configure; then
2908     source_path=.
2909 else
2910     source_path=$(cd $(dirname "$0"); pwd)
2911     echo "$source_path" | grep -q '[[:blank:]]' &&
2912         die "Out of tree builds are impossible with whitespace in source path."
2913     test -e "$source_path/config.h" &&
2914         die "Out of tree builds are impossible with config.h in source dir."
2915 fi
2916
2917 for v in "$@"; do
2918     r=${v#*=}
2919     l=${v%"$r"}
2920     r=$(sh_quote "$r")
2921     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2922 done
2923
2924 find_things(){
2925     thing=$1
2926     pattern=$2
2927     file=$source_path/$3
2928     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2929 }
2930
2931 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2932 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2933 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2934 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2935 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2936 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2937 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2938 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2939 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2940 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2941 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2942
2943 ALL_COMPONENTS="
2944     $BSF_LIST
2945     $DECODER_LIST
2946     $DEMUXER_LIST
2947     $ENCODER_LIST
2948     $FILTER_LIST
2949     $HWACCEL_LIST
2950     $INDEV_LIST
2951     $MUXER_LIST
2952     $OUTDEV_LIST
2953     $PARSER_LIST
2954     $PROTOCOL_LIST
2955 "
2956
2957 for n in $COMPONENT_LIST; do
2958     v=$(toupper ${n%s})_LIST
2959     eval enable \$$v
2960     eval ${n}_if_any="\$$v"
2961 done
2962
2963 enable $ARCH_EXT_LIST
2964
2965 die_unknown(){
2966     echo "Unknown option \"$1\"."
2967     echo "See $0 --help for available options."
2968     exit 1
2969 }
2970
2971 print_3_columns() {
2972     cat | tr ' ' '\n' | sort | pr -r -3 -t
2973 }
2974
2975 show_list() {
2976     suffix=_$1
2977     shift
2978     echo $* | sed s/$suffix//g | print_3_columns
2979     exit 0
2980 }
2981
2982 rand_list(){
2983     IFS=', '
2984     set -- $*
2985     unset IFS
2986     for thing; do
2987         comp=${thing%:*}
2988         prob=${thing#$comp}
2989         prob=${prob#:}
2990         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2991         echo "prob ${prob:-0.5}"
2992         printf '%s\n' $comp
2993     done
2994 }
2995
2996 do_random(){
2997     action=$1
2998     shift
2999     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3000     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3001 }
3002
3003 for opt do
3004     optval="${opt#*=}"
3005     case "$opt" in
3006         --extra-ldflags=*)
3007             add_ldflags $optval
3008         ;;
3009         --extra-ldexeflags=*)
3010             add_ldexeflags $optval
3011         ;;
3012         --extra-libs=*)
3013             add_extralibs $optval
3014         ;;
3015         --disable-devices)
3016             disable $INDEV_LIST $OUTDEV_LIST
3017         ;;
3018         --enable-debug=*)
3019             debuglevel="$optval"
3020         ;;
3021         --disable-programs)
3022             disable $PROGRAM_LIST
3023         ;;
3024         --disable-everything)
3025             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3026         ;;
3027         --disable-all)
3028             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3029             disable $LIBRARY_LIST $PROGRAM_LIST doc
3030         ;;
3031         --enable-random|--disable-random)
3032             action=${opt%%-random}
3033             do_random ${action#--} $COMPONENT_LIST
3034         ;;
3035         --enable-random=*|--disable-random=*)
3036             action=${opt%%-random=*}
3037             do_random ${action#--} $optval
3038         ;;
3039         --enable-*=*|--disable-*=*)
3040             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3041             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3042             eval list=\$$(toupper $thing)_LIST
3043             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3044             list=$(filter "$name" $list)
3045             [ "$list" = "" ] && warn "Option $opt did not match anything"
3046             $action $list
3047         ;;
3048         --enable-?*|--disable-?*)
3049             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3050             if is_in $option $COMPONENT_LIST; then
3051                 test $action = disable && action=unset
3052                 eval $action \$$(toupper ${option%s})_LIST
3053             elif is_in $option $CMDLINE_SELECT; then
3054                 $action $option
3055             else
3056                 die_unknown $opt
3057             fi
3058         ;;
3059         --list-*)
3060             NAME="${opt#--list-}"
3061             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3062             NAME=${NAME%s}
3063             eval show_list $NAME \$$(toupper $NAME)_LIST
3064         ;;
3065         --help|-h) show_help
3066         ;;
3067         --fatal-warnings) enable fatal_warnings
3068         ;;
3069         *)
3070             optname="${opt%%=*}"
3071             optname="${optname#--}"
3072             optname=$(echo "$optname" | sed 's/-/_/g')
3073             if is_in $optname $CMDLINE_SET; then
3074                 eval $optname='$optval'
3075             elif is_in $optname $CMDLINE_APPEND; then
3076                 append $optname "$optval"
3077             else
3078                 die_unknown $opt
3079             fi
3080         ;;
3081     esac
3082 done
3083
3084 for e in $env; do
3085     eval "export $e"
3086 done
3087
3088 disabled logging && logfile=/dev/null
3089
3090 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3091 set >> $logfile
3092
3093 test -n "$valgrind" && toolchain="valgrind-memcheck"
3094
3095 case "$toolchain" in
3096     clang-asan)
3097         cc_default="clang"
3098         add_cflags  -fsanitize=address
3099         add_ldflags -fsanitize=address
3100     ;;
3101     clang-tsan)
3102         cc_default="clang"
3103         add_cflags  -fsanitize=thread -pie
3104         add_ldflags -fsanitize=thread -pie
3105     ;;
3106     clang-usan)
3107         cc_default="clang"
3108         add_cflags  -fsanitize=undefined
3109         add_ldflags -fsanitize=undefined
3110     ;;
3111     gcc-asan)
3112         cc_default="gcc"
3113         add_cflags  -fsanitize=address
3114         add_ldflags -fsanitize=address
3115     ;;
3116     gcc-tsan)
3117         cc_default="gcc"
3118         add_cflags  -fsanitize=thread -pie -fPIC
3119         add_ldflags -fsanitize=thread -pie -fPIC
3120     ;;
3121     gcc-usan)
3122         cc_default="gcc"
3123         add_cflags  -fsanitize=undefined
3124         add_ldflags -fsanitize=undefined
3125     ;;
3126     valgrind-massif)
3127         target_exec_default=${valgrind:-"valgrind"}
3128         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"
3129     ;;
3130     valgrind-memcheck)
3131         target_exec_default=${valgrind:-"valgrind"}
3132         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3133     ;;
3134     msvc)
3135         # Check whether the current MSVC version needs the C99 converter.
3136         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3137         # support enough of C99 to build ffmpeg. Default to the new
3138         # behaviour if the regexp was unable to match anything, since this
3139         # successfully parses the version number of existing supported
3140         # versions that require the converter (MSVC 2010 and 2012).
3141         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3142         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3143             cc_default="cl"
3144         else
3145             cc_default="c99wrap cl"
3146         fi
3147         ld_default="link"
3148         nm_default="dumpbin -symbols"
3149         ar_default="lib"
3150         target_os_default="win32"
3151         # Use a relative path for TMPDIR. This makes sure all the
3152         # ffconf temp files are written with a relative path, avoiding
3153         # issues with msys/win32 path conversion for MSVC parameters
3154         # such as -Fo<file> or -out:<file>.
3155         TMPDIR=.
3156     ;;
3157     icl)
3158         cc_default="icl"
3159         ld_default="xilink"
3160         nm_default="dumpbin -symbols"
3161         ar_default="xilib"
3162         target_os_default="win32"
3163         TMPDIR=.
3164     ;;
3165     gcov)
3166         add_cflags  -fprofile-arcs -ftest-coverage
3167         add_ldflags -fprofile-arcs -ftest-coverage
3168     ;;
3169     hardened)
3170         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3171         add_cflags   -fno-strict-overflow -fstack-protector-all
3172         add_ldflags  -Wl,-z,relro -Wl,-z,now
3173     ;;
3174     ?*)
3175         die "Unknown toolchain $toolchain"
3176     ;;
3177 esac
3178
3179 test -n "$cross_prefix" && enable cross_compile
3180
3181 if enabled cross_compile; then
3182     test -n "$arch" && test -n "$target_os" ||
3183         die "Must specify target arch and OS when cross-compiling"
3184 fi
3185
3186 ar_default="${cross_prefix}${ar_default}"
3187 cc_default="${cross_prefix}${cc_default}"
3188 cxx_default="${cross_prefix}${cxx_default}"
3189 nm_default="${cross_prefix}${nm_default}"
3190 pkg_config_default="${cross_prefix}${pkg_config_default}"
3191 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3192     ranlib_default="${cross_prefix}${ranlib_default} -D"
3193 else
3194     ranlib_default="${cross_prefix}${ranlib_default}"
3195 fi
3196 strip_default="${cross_prefix}${strip_default}"
3197 windres_default="${cross_prefix}${windres_default}"
3198
3199 sysinclude_default="${sysroot}/usr/include"
3200
3201 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3202     target_exec target_os yasmexe
3203 enabled cross_compile || host_cc_default=$cc
3204 set_default host_cc
3205
3206 pkg_config_fail_message=""
3207 if ! $pkg_config --version >/dev/null 2>&1; then
3208     warn "$pkg_config not found, library detection may fail."
3209     pkg_config=false
3210 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3211     pkg_config_fail_message="
3212 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3213 fi
3214
3215 if test $doxygen != $doxygen_default && \
3216   ! $doxygen --version >/dev/null 2>&1; then
3217     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3218 fi
3219
3220 exesuf() {
3221     case $1 in
3222         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3223     esac
3224 }
3225
3226 EXESUF=$(exesuf $target_os)
3227 HOSTEXESUF=$(exesuf $host_os)
3228
3229 # set temporary file name
3230 : ${TMPDIR:=$TEMPDIR}
3231 : ${TMPDIR:=$TMP}
3232 : ${TMPDIR:=/tmp}
3233
3234 if [ -n "$tempprefix" ] ; then
3235     mktemp(){
3236         echo $tempprefix.${HOSTNAME}.${UID}
3237     }
3238 elif ! check_cmd mktemp -u XXXXXX; then
3239     # simple replacement for missing mktemp
3240     # NOT SAFE FOR GENERAL USE
3241     mktemp(){
3242         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3243     }
3244 fi
3245
3246 tmpfile(){
3247     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3248         (set -C; exec > $tmp) 2>/dev/null ||
3249         die "Unable to create temporary file in $TMPDIR."
3250     append TMPFILES $tmp
3251     eval $1=$tmp
3252 }
3253
3254 trap 'rm -f -- $TMPFILES' EXIT
3255
3256 tmpfile TMPASM .asm
3257 tmpfile TMPC   .c
3258 tmpfile TMPCPP .cpp
3259 tmpfile TMPE   $EXESUF
3260 tmpfile TMPH   .h
3261 tmpfile TMPM   .m
3262 tmpfile TMPO   .o
3263 tmpfile TMPS   .S
3264 tmpfile TMPSH  .sh
3265 tmpfile TMPV   .ver
3266
3267 unset -f mktemp
3268
3269 chmod +x $TMPE
3270
3271 # make sure we can execute files in $TMPDIR
3272 cat > $TMPSH 2>> $logfile <<EOF
3273 #! /bin/sh
3274 EOF
3275 chmod +x $TMPSH >> $logfile 2>&1
3276 if ! $TMPSH >> $logfile 2>&1; then
3277     cat <<EOF
3278 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3279 variable to another directory and make sure that it is not mounted noexec.
3280 EOF
3281     die "Sanity test failed."
3282 fi
3283
3284 armasm_flags(){
3285     for flag; do
3286         case $flag in
3287             # Filter out MSVC cl.exe options from cflags that shouldn't
3288             # be passed to gas-preprocessor
3289             -M[TD]*)                                            ;;
3290             *)                  echo $flag                      ;;
3291         esac
3292    done
3293 }
3294
3295 ccc_flags(){
3296     for flag; do
3297         case $flag in
3298             -std=c99)           echo -c99                       ;;
3299             -mcpu=*)            echo -arch ${flag#*=}           ;;
3300             -mieee)             echo -ieee                      ;;
3301             -O*|-fast)          echo $flag                      ;;
3302             -fno-math-errno)    echo -assume nomath_errno       ;;
3303             -g)                 echo -g3                        ;;
3304             -Wall)              echo -msg_enable level2         ;;
3305             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3306             -Wl,*)              echo $flag                      ;;
3307             -f*|-W*)                                            ;;
3308             *)                  echo $flag                      ;;
3309         esac
3310    done
3311 }
3312
3313 cparser_flags(){
3314     for flag; do
3315         case $flag in
3316             -Wno-switch)             echo -Wno-switch-enum ;;
3317             -Wno-format-zero-length) ;;
3318             -Wdisabled-optimization) ;;
3319             -Wno-pointer-sign)       echo -Wno-other ;;
3320             *)                       echo $flag ;;
3321         esac
3322     done
3323 }
3324
3325 msvc_common_flags(){
3326     for flag; do
3327         case $flag in
3328             # In addition to specifying certain flags under the compiler
3329             # specific filters, they must be specified here as well or else the
3330             # generic catch all at the bottom will print the original flag.
3331             -Wall)                ;;
3332             -std=c99)             ;;
3333             # Common flags
3334             -fomit-frame-pointer) ;;
3335             -g)                   echo -Z7 ;;
3336             -fno-math-errno)      ;;
3337             -fno-common)          ;;
3338             -fno-signed-zeros)    ;;
3339             -fPIC)                ;;
3340             -mthumb)              ;;
3341             -march=*)             ;;
3342             -lz)                  echo zlib.lib ;;
3343             -lavifil32)           echo vfw32.lib ;;
3344             -lavicap32)           echo vfw32.lib user32.lib ;;
3345             -l*)                  echo ${flag#-l}.lib ;;
3346             -L*)                  echo -libpath:${flag#-L} ;;
3347             *)                    echo $flag ;;
3348         esac
3349     done
3350 }
3351
3352 msvc_flags(){
3353     msvc_common_flags "$@"
3354     for flag; do
3355         case $flag in
3356             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3357                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3358                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3359                                        -wd4307 \
3360                                        -wd4273 -wd4554 -wd4701 ;;
3361         esac
3362     done
3363 }
3364
3365 icl_flags(){
3366     msvc_common_flags "$@"
3367     for flag; do
3368         case $flag in
3369             # Despite what Intel's documentation says -Wall, which is supported
3370             # on Windows, does enable remarks so disable them here.
3371             -Wall)                echo $flag -Qdiag-disable:remark ;;
3372             -std=c99)             echo -Qstd=c99 ;;
3373             -flto)                echo -ipo ;;
3374         esac
3375     done
3376 }
3377
3378 icc_flags(){
3379     for flag; do
3380         case $flag in
3381             -flto)                echo -ipo ;;
3382             *)                    echo $flag ;;
3383         esac
3384     done
3385 }
3386
3387 pgi_flags(){
3388     for flag; do
3389         case $flag in
3390             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3391             -fomit-frame-pointer) echo -Mnoframe ;;
3392             -g)                   echo -gopt ;;
3393             *)                    echo $flag ;;
3394         esac
3395     done
3396 }
3397
3398 suncc_flags(){
3399     for flag; do
3400         case $flag in
3401             -march=*|-mcpu=*)
3402                 case "${flag#*=}" in
3403                     native)                   echo -xtarget=native       ;;
3404                     v9|niagara)               echo -xarch=sparc          ;;
3405                     ultrasparc)               echo -xarch=sparcvis       ;;
3406                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3407                     i586|pentium)             echo -xchip=pentium        ;;
3408                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3409                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3410                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3411                     pentium4*)          echo -xtarget=pentium4           ;;
3412                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3413                     *-sse3)             echo -xarch=sse3                 ;;
3414                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3415                     bonnell)                   echo -xarch=ssse3         ;;
3416                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3417                     westmere)                  echo -xtarget=westmere    ;;
3418                     silvermont)                echo -xarch=sse4_2        ;;
3419                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3420                     core-avx*|ivybridge|haswell|broadwell)
3421                                                echo -xarch=avx           ;;
3422                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3423                     btver1)                    echo -xarch=amdsse4a      ;;
3424                     btver2|bdver*)             echo -xarch=avx           ;;
3425                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3426                     k8|opteron|athlon64|athlon-fx)
3427                                                echo -xarch=sse2a         ;;
3428                     athlon*)                   echo -xarch=pentium_proa  ;;
3429                 esac
3430                 ;;
3431             -std=c99)             echo -xc99              ;;
3432             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3433             -fPIC)                echo -KPIC -xcode=pic32 ;;
3434             -W*,*)                echo $flag              ;;
3435             -f*-*|-W*|-mimpure-text)                      ;;
3436             -shared)              echo -G                 ;;
3437             *)                    echo $flag              ;;
3438         esac
3439     done
3440 }
3441
3442 tms470_flags(){
3443     for flag; do
3444         case $flag in
3445             -march=*|-mcpu=*)
3446                 case "${flag#*=}" in
3447                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3448                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3449                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3450                     armv6*|arm11*)          echo -mv=6   ;;
3451                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3452                                             echo -mv=5e  ;;
3453                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3454                 esac
3455                 ;;
3456             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3457             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3458             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3459             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3460             -msoft-float)   echo --float_support=vfplib       ;;
3461             -O[0-3]|-mf=*)  echo $flag                        ;;
3462             -g)             echo -g -mn                       ;;
3463             -pds=*)         echo $flag                        ;;
3464             -D*|-I*)        echo $flag                        ;;
3465             --gcc|--abi=*)  echo $flag                        ;;
3466             -me)            echo $flag                        ;;
3467         esac
3468     done
3469 }
3470
3471 probe_cc(){
3472     pfx=$1
3473     _cc=$2
3474
3475     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3476     unset _ld_o _ldflags _ld_lib _ld_path
3477     unset _depflags _DEPCMD _DEPFLAGS
3478     _flags_filter=echo
3479
3480     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3481         true # no-op to avoid reading stdin in following checks
3482     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3483         _type=llvm_gcc
3484         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3485         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3486         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3487         _cflags_speed='-O3'
3488         _cflags_size='-Os'
3489     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3490         _type=gcc
3491         gcc_version=$($_cc --version | head -n1)
3492         gcc_basever=$($_cc -dumpversion)
3493         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3494         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3495         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3496         if ! $_cc -dumpversion | grep -q '^2\.'; then
3497             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3498         fi
3499         _cflags_speed='-O3'
3500         _cflags_size='-Os'
3501     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3502         _type=icc
3503         _ident=$($_cc --version | head -n1)
3504         _depflags='-MMD'
3505         _cflags_speed='-O3'
3506         _cflags_size='-Os'
3507         _cflags_noopt='-O1'
3508         _flags_filter=icc_flags
3509     elif $_cc -v 2>&1 | grep -q xlc; then
3510         _type=xlc
3511         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3512         _cflags_speed='-O5'
3513         _cflags_size='-O5 -qcompact'
3514     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3515         _type=ccc
3516         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3517         _DEPFLAGS='-M'
3518         _cflags_speed='-fast'
3519         _cflags_size='-O1'
3520         _flags_filter=ccc_flags
3521     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3522         test -d "$sysroot" || die "No valid sysroot specified."
3523         _type=armcc
3524         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3525         armcc_conf="$PWD/armcc.conf"
3526         $_cc --arm_linux_configure                 \
3527              --arm_linux_config_file="$armcc_conf" \
3528              --configure_sysroot="$sysroot"        \
3529              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3530              die "Error creating armcc configuration file."
3531         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3532         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3533         as_default="${cross_prefix}gcc"
3534         _depflags='-MMD'
3535         _cflags_speed='-O3'
3536         _cflags_size='-Os'
3537     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3538         _type=tms470
3539         _ident=$($_cc -version | head -n1 | tr -s ' ')
3540         _flags='--gcc --abi=eabi -me'
3541         _cc_e='-ppl -fe=$@'
3542         _cc_o='-fe=$@'
3543         _depflags='-ppa -ppd=$(@:.o=.d)'
3544         _cflags_speed='-O3 -mf=5'
3545         _cflags_size='-O3 -mf=2'
3546         _flags_filter=tms470_flags
3547     elif $_cc -v 2>&1 | grep -q clang; then
3548         _type=clang
3549         _ident=$($_cc --version | head -n1)
3550         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3551         _cflags_speed='-O3'
3552         _cflags_size='-Os'
3553     elif $_cc -V 2>&1 | grep -q Sun; then
3554         _type=suncc
3555         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3556         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3557         _DEPFLAGS='-xM1 -xc99'
3558         _ldflags='-std=c99'
3559         _cflags_speed='-O5'
3560         _cflags_size='-O5 -xspace'
3561         _flags_filter=suncc_flags
3562     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3563         _type=pathscale
3564         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3565         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3566         _cflags_speed='-O2'
3567         _cflags_size='-Os'
3568         _flags_filter='filter_out -Wdisabled-optimization'
3569     elif $_cc -v 2>&1 | grep -q Open64; then
3570         _type=open64
3571         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3572         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3573         _cflags_speed='-O2'
3574         _cflags_size='-Os'
3575         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3576     elif $_cc -V 2>&1 | grep -q Portland; then
3577         _type=pgi
3578         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3579         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3580         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3581         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3582         _cflags_noopt="-O"
3583         _flags_filter=pgi_flags
3584     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3585         _type=armasm
3586         _ident=$($_cc | head -n1)
3587         # 4509: "This form of conditional instruction is deprecated"
3588         _flags="-nologo -ignore 4509"
3589         _flags_filter=armasm_flags
3590     elif $_cc 2>&1 | grep -q Intel; then
3591         _type=icl
3592         _ident=$($_cc 2>&1 | head -n1)
3593         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3594         # Not only is O3 broken on 13.x+ but it is slower on all previous
3595         # versions (tested) as well.
3596         _cflags_speed="-O2"
3597         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3598         if $_cc 2>&1 | grep -q Linker; then
3599             _ld_o='-out:$@'
3600         else
3601             _ld_o='-Fe$@'
3602         fi
3603         _cc_o='-Fo$@'
3604         _cc_e='-P'
3605         _flags_filter=icl_flags
3606         _ld_lib='lib%.a'
3607         _ld_path='-libpath:'
3608         # -Qdiag-error to make icl error when seeing certain unknown arguments
3609         _flags='-nologo -Qdiag-error:4044,10157'
3610         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3611         # with MSVC which enables it by default.
3612         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3613         disable stripping
3614     elif $_cc 2>&1 | grep -q Microsoft; then
3615         _type=msvc
3616         _ident=$($_cc 2>&1 | head -n1)
3617         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3618         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3619         _cflags_speed="-O2"
3620         _cflags_size="-O1"
3621         if $_cc 2>&1 | grep -q Linker; then
3622             _ld_o='-out:$@'
3623         else
3624             _ld_o='-Fe$@'
3625         fi
3626         _cc_o='-Fo$@'
3627         _cc_e='-P -Fi$@'
3628         _flags_filter=msvc_flags
3629         _ld_lib='lib%.a'
3630         _ld_path='-libpath:'
3631         _flags='-nologo'
3632         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3633         disable stripping
3634     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3635         _type=cparser
3636         _ident=$($_cc --version | head -n1)
3637         _depflags='-MMD'
3638         _cflags_speed='-O4'
3639         _cflags_size='-O2'
3640         _flags_filter=cparser_flags
3641     fi
3642
3643     eval ${pfx}_type=\$_type
3644     eval ${pfx}_ident=\$_ident
3645 }
3646
3647 set_ccvars(){
3648     eval ${1}_C=\${_cc_c-\${${1}_C}}
3649     eval ${1}_E=\${_cc_e-\${${1}_E}}
3650     eval ${1}_O=\${_cc_o-\${${1}_O}}
3651
3652     if [ -n "$_depflags" ]; then
3653         eval ${1}_DEPFLAGS=\$_depflags
3654     else
3655         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3656         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3657         eval DEP${1}FLAGS=\$_flags
3658     fi
3659 }
3660
3661 probe_cc cc "$cc"
3662 cflags_filter=$_flags_filter
3663 cflags_speed=$_cflags_speed
3664 cflags_size=$_cflags_size
3665 cflags_noopt=$_cflags_noopt
3666 add_cflags $_flags $_cflags
3667 cc_ldflags=$_ldflags
3668 set_ccvars CC
3669
3670 probe_cc hostcc "$host_cc"
3671 host_cflags_filter=$_flags_filter
3672 add_host_cflags  $_flags $_cflags
3673 set_ccvars HOSTCC
3674
3675 test -n "$cc_type" && enable $cc_type ||
3676     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3677
3678 : ${as_default:=$cc}
3679 : ${dep_cc_default:=$cc}
3680 : ${ld_default:=$cc}
3681 : ${host_ld_default:=$host_cc}
3682 set_default ar as dep_cc ld host_ld windres
3683
3684 probe_cc as "$as"
3685 asflags_filter=$_flags_filter
3686 add_asflags $_flags $_cflags
3687 set_ccvars AS
3688
3689 probe_cc ld "$ld"
3690 ldflags_filter=$_flags_filter
3691 add_ldflags $_flags $_ldflags
3692 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3693 LD_O=${_ld_o-$LD_O}
3694 LD_LIB=${_ld_lib-$LD_LIB}
3695 LD_PATH=${_ld_path-$LD_PATH}
3696
3697 probe_cc hostld "$host_ld"
3698 host_ldflags_filter=$_flags_filter
3699 add_host_ldflags $_flags $_ldflags
3700 HOSTLD_O=${_ld_o-$HOSTLD_O}
3701
3702 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3703     probe_cc depcc "$dep_cc"
3704     CCDEP=${_DEPCMD:-$DEPCMD}
3705     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3706     DEPCCFLAGS=$_flags
3707 fi
3708
3709 if $ar 2>&1 | grep -q Microsoft; then
3710     arflags="-nologo"
3711     ar_o='-out:$@'
3712 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3713     arflags="rq"
3714     ar_o='$@'
3715 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3716     arflags='-Xany -r -c'
3717     ar_o='$@'
3718 elif $ar 2>&1 | grep -q "\[D\] "; then
3719     arflags="rcD"
3720     ar_o='$@'
3721 else
3722     arflags="rc"
3723     ar_o='$@'
3724 fi
3725
3726 add_cflags $extra_cflags
3727 add_cxxflags $extra_cxxflags
3728 add_asflags $extra_cflags
3729
3730 if test -n "$sysroot"; then
3731     case "$cc_type" in
3732         gcc|llvm_gcc|clang)
3733             add_cppflags --sysroot="$sysroot"
3734             add_ldflags --sysroot="$sysroot"
3735 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3736             add_cppflags -isysroot "$sysroot"
3737             add_ldflags -isysroot "$sysroot"
3738         ;;
3739         tms470)
3740             add_cppflags -I"$sysinclude"
3741             add_ldflags  --sysroot="$sysroot"
3742         ;;
3743     esac
3744 fi
3745
3746 if test "$cpu" = host; then
3747     enabled cross_compile &&
3748         die "--cpu=host makes no sense when cross-compiling."
3749
3750     case "$cc_type" in
3751         gcc|llvm_gcc)
3752             check_native(){
3753                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3754                 sed -n "/cc1.*$1=/{
3755                             s/.*$1=\\([^ ]*\\).*/\\1/
3756                             p
3757                             q
3758                         }" $TMPE
3759             }
3760             cpu=$(check_native -march || check_native -mcpu)
3761         ;;
3762     esac
3763
3764     test "${cpu:-host}" = host &&
3765         die "--cpu=host not supported with compiler $cc"
3766 fi
3767
3768 # Deal with common $arch aliases
3769 case "$arch" in
3770     aarch64|arm64)
3771         arch="aarch64"
3772     ;;
3773     arm*|iPad*|iPhone*)
3774         arch="arm"
3775     ;;
3776     mips*|IP*)
3777         arch="mips"
3778     ;;
3779     parisc*|hppa*)
3780         arch="parisc"
3781     ;;
3782     "Power Macintosh"|ppc*|powerpc*)
3783         arch="ppc"
3784     ;;
3785     s390|s390x)
3786         arch="s390"
3787     ;;
3788     sh4|sh)
3789         arch="sh4"
3790     ;;
3791     sun4u|sparc*)
3792         arch="sparc"
3793     ;;
3794     tilegx|tile-gx)
3795         arch="tilegx"
3796     ;;
3797     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3798         arch="x86"
3799     ;;
3800 esac
3801
3802 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3803 enable $arch
3804
3805 # Add processor-specific flags
3806 if enabled aarch64; then
3807
3808     case $cpu in
3809         armv*)
3810             cpuflags="-march=$cpu"
3811         ;;
3812         *)
3813             cpuflags="-mcpu=$cpu"
3814         ;;
3815     esac
3816
3817 elif enabled alpha; then
3818
3819     cpuflags="-mcpu=$cpu"
3820
3821 elif enabled arm; then
3822
3823     check_arm_arch() {
3824         check_cpp_condition stddef.h \
3825             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3826             $cpuflags
3827     }
3828
3829     probe_arm_arch() {
3830         if   check_arm_arch 4;        then echo armv4;
3831         elif check_arm_arch 4T;       then echo armv4t;
3832         elif check_arm_arch 5;        then echo armv5;
3833         elif check_arm_arch 5E;       then echo armv5e;
3834         elif check_arm_arch 5T;       then echo armv5t;
3835         elif check_arm_arch 5TE;      then echo armv5te;
3836         elif check_arm_arch 5TEJ;     then echo armv5te;
3837         elif check_arm_arch 6;        then echo armv6;
3838         elif check_arm_arch 6J;       then echo armv6j;
3839         elif check_arm_arch 6K;       then echo armv6k;
3840         elif check_arm_arch 6Z;       then echo armv6z;
3841         elif check_arm_arch 6ZK;      then echo armv6zk;
3842         elif check_arm_arch 6T2;      then echo armv6t2;
3843         elif check_arm_arch 7;        then echo armv7;
3844         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3845         elif check_arm_arch 7S;       then echo armv7-a;
3846         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3847         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3848         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3849         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3850         fi
3851     }
3852
3853     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3854
3855     case $cpu in
3856         armv*)
3857             cpuflags="-march=$cpu"
3858             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3859         ;;
3860         *)
3861             cpuflags="-mcpu=$cpu"
3862             case $cpu in
3863                 cortex-a*)                               subarch=armv7a  ;;
3864                 cortex-r*)                               subarch=armv7r  ;;
3865                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3866                 arm11*)                                  subarch=armv6   ;;
3867                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3868                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3869                 *)                             subarch=$(probe_arm_arch) ;;
3870             esac
3871         ;;
3872     esac
3873
3874     case "$subarch" in
3875         armv5t*)    enable fast_clz                ;;
3876         armv[6-8]*)
3877             enable fast_clz
3878             disabled fast_unaligned || enable fast_unaligned
3879             ;;
3880     esac
3881
3882 elif enabled avr32; then
3883
3884     case $cpu in
3885         ap7[02]0[0-2])
3886             subarch="avr32_ap"
3887             cpuflags="-mpart=$cpu"
3888         ;;
3889         ap)
3890             subarch="avr32_ap"
3891             cpuflags="-march=$cpu"
3892         ;;
3893         uc3[ab]*)
3894             subarch="avr32_uc"
3895             cpuflags="-mcpu=$cpu"
3896         ;;
3897         uc)
3898             subarch="avr32_uc"
3899             cpuflags="-march=$cpu"
3900         ;;
3901     esac
3902
3903 elif enabled bfin; then
3904
3905     cpuflags="-mcpu=$cpu"
3906
3907 elif enabled mips; then
3908
3909     cpuflags="-march=$cpu"
3910
3911     case $cpu in
3912         24kc)
3913             disable mips32r5
3914             disable mips64r6
3915             disable mipsfpu
3916             disable mipsdspr1
3917             disable mipsdspr2
3918             disable msa
3919         ;;
3920         24kf*)
3921             disable mips32r5
3922             disable mips64r6
3923             disable mipsdspr1
3924             disable mipsdspr2
3925             disable msa
3926         ;;
3927         24kec|34kc|1004kc)
3928             disable mips32r5
3929             disable mips64r6
3930             disable mipsfpu
3931             disable mipsdspr2
3932             disable msa
3933         ;;
3934         24kef*|34kf*|1004kf*)
3935             disable mips32r5
3936             disable mips64r6
3937             disable mipsdspr2
3938             disable msa
3939         ;;
3940         74kc)
3941             disable mips32r5
3942             disable mips64r6
3943             disable mipsfpu
3944             disable msa
3945         ;;
3946         74kf)
3947             disable mips32r5
3948             disable mips64r6
3949             disable msa
3950         ;;
3951         p5600)
3952             disable mips64r6
3953             disable mipsdspr1
3954             disable mipsdspr2
3955
3956             check_cflags "-mtune=p5600"
3957         ;;
3958         i6400)
3959             disable mips32r5
3960             disable mipsdspr1
3961             disable mipsdspr2
3962             disable mipsfpu
3963
3964             check_cflags "-mtune=i6400 -mabi=64"
3965             check_ldflags "-mabi=64"
3966         ;;
3967         loongson3*)
3968             disable mipsfpu
3969             disable mips32r2
3970             disable mips32r5
3971             disable mips64r6
3972             disable mipsdspr1
3973             disable mipsdspr2
3974             disable msa
3975             enable local_aligned_8 local_aligned_16
3976             enable simd_align_16
3977             enable fast_64bit
3978             enable fast_clz
3979             enable fast_cmov
3980             enable fast_unaligned
3981             disable aligned_stack
3982             cpuflags="-march=loongson3a -mhard-float"
3983         ;;
3984         generic)
3985             disable mips32r5
3986             disable mips64r6
3987             disable msa
3988         ;;
3989     esac
3990
3991 elif enabled ppc; then
3992
3993     disable ldbrx
3994
3995     case $(tolower $cpu) in
3996         601|ppc601|powerpc601)
3997             cpuflags="-mcpu=601"
3998             disable altivec
3999         ;;
4000         603*|ppc603*|powerpc603*)
4001             cpuflags="-mcpu=603"
4002             disable altivec
4003         ;;
4004         604*|ppc604*|powerpc604*)
4005             cpuflags="-mcpu=604"
4006             disable altivec
4007         ;;
4008         g3|75*|ppc75*|powerpc75*)
4009             cpuflags="-mcpu=750"
4010             disable altivec
4011         ;;
4012         g4|745*|ppc745*|powerpc745*)
4013             cpuflags="-mcpu=7450"
4014             disable vsx
4015         ;;
4016         74*|ppc74*|powerpc74*)
4017             cpuflags="-mcpu=7400"
4018             disable vsx
4019         ;;
4020         g5|970|ppc970|powerpc970)
4021             cpuflags="-mcpu=970"
4022             disable vsx
4023         ;;
4024         power[3-6]*)
4025             cpuflags="-mcpu=$cpu"
4026             disable vsx
4027         ;;
4028         power[7-8]*)
4029             cpuflags="-mcpu=$cpu"
4030         ;;
4031         cell)
4032             cpuflags="-mcpu=cell"
4033             enable ldbrx
4034             disable vsx
4035         ;;
4036         e500mc)
4037             cpuflags="-mcpu=e500mc"
4038             disable altivec
4039         ;;
4040         e500v2)
4041             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4042             disable altivec
4043             disable dcbzl
4044         ;;
4045         e500)
4046             cpuflags="-mcpu=8540 -mhard-float"
4047             disable altivec
4048             disable dcbzl
4049         ;;
4050     esac
4051
4052 elif enabled sparc; then
4053
4054     case $cpu in
4055         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4056             cpuflags="-mcpu=$cpu"
4057         ;;
4058         ultrasparc*|niagara[234])
4059             cpuflags="-mcpu=$cpu"
4060         ;;
4061     esac
4062
4063 elif enabled x86; then
4064
4065     case $cpu in
4066         i[345]86|pentium)
4067             cpuflags="-march=$cpu"
4068             disable i686
4069             disable mmx
4070         ;;
4071         # targets that do NOT support nopl and conditional mov (cmov)
4072         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4073             cpuflags="-march=$cpu"
4074             disable i686
4075         ;;
4076         # targets that do support nopl and conditional mov (cmov)
4077         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4078         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4079             cpuflags="-march=$cpu"
4080             enable i686
4081             enable fast_cmov
4082         ;;
4083         # targets that do support conditional mov but on which it's slow
4084         pentium4|pentium4m|prescott|nocona)
4085             cpuflags="-march=$cpu"
4086             enable i686
4087             disable fast_cmov
4088         ;;
4089     esac
4090
4091 fi
4092
4093 if [ "$cpu" != generic ]; then
4094     add_cflags  $cpuflags
4095     add_asflags $cpuflags
4096 fi
4097
4098 # compiler sanity check
4099 check_exec <<EOF
4100 int main(void){ return 0; }
4101 EOF
4102 if test "$?" != 0; then
4103     echo "$cc is unable to create an executable file."
4104     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4105         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4106         echo "Only do this if you know what cross compiling means."
4107     fi
4108     die "C compiler test failed."
4109 fi
4110
4111 add_cppflags -D_ISOC99_SOURCE
4112 add_cxxflags -D__STDC_CONSTANT_MACROS
4113 check_cflags -std=c99
4114 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4115 #include <stdlib.h>
4116 EOF
4117 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4118 #include <stdlib.h>
4119 EOF
4120
4121 add_host_cppflags -D_ISOC99_SOURCE
4122 check_host_cflags -std=c99
4123 check_host_cflags -Wall
4124 check_host_cflags -O3
4125
4126 check_64bit(){
4127     arch32=$1
4128     arch64=$2
4129     expr=$3
4130     check_code cc "" "int test[2*($expr) - 1]" &&
4131         subarch=$arch64 || subarch=$arch32
4132 }
4133
4134 case "$arch" in
4135     aarch64|alpha|ia64)
4136         spic=$shared
4137     ;;
4138     mips)
4139         check_64bit mips mips64 '_MIPS_SIM > 1'
4140         spic=$shared
4141     ;;
4142     parisc)
4143         check_64bit parisc parisc64 'sizeof(void *) > 4'
4144         spic=$shared
4145     ;;
4146     ppc)
4147         check_64bit ppc ppc64 'sizeof(void *) > 4'
4148         spic=$shared
4149     ;;
4150     s390)
4151         check_64bit s390 s390x 'sizeof(void *) > 4'
4152         spic=$shared
4153     ;;
4154     sparc)
4155         check_64bit sparc sparc64 'sizeof(void *) > 4'
4156         spic=$shared
4157     ;;
4158     x86)
4159         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4160         # Treat x32 as x64 for now. Note it also needs spic=$shared
4161         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4162             subarch=x86_64
4163         if test "$subarch" = "x86_64"; then
4164             spic=$shared
4165         fi
4166     ;;
4167     ppc)
4168         check_cc <<EOF && subarch="ppc64"
4169         int test[(int)sizeof(char*) - 7];
4170 EOF
4171     ;;
4172 esac
4173
4174 enable $subarch
4175 enabled spic && enable_weak pic
4176
4177 # OS specific
4178 case $target_os in
4179     aix)
4180         SHFLAGS=-shared
4181         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4182         enabled shared && add_ldflags -Wl,-brtl
4183         ;;
4184     android)
4185         disable symver
4186         enable section_data_rel_ro
4187         SLIB_INSTALL_NAME='$(SLIBNAME)'
4188         SLIB_INSTALL_LINKS=
4189         # soname not set on purpose
4190         SHFLAGS=-shared
4191         ;;
4192     haiku)
4193         prefix_default="/boot/common"
4194         network_extralibs="-lnetwork"
4195         host_libs=
4196         ;;
4197     sunos)
4198         SHFLAGS='-shared -Wl,-h,$$(@F)'
4199         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4200         network_extralibs="-lsocket -lnsl"
4201         add_cppflags -D__EXTENSIONS__
4202         # When using suncc to build, the Solaris linker will mark
4203         # an executable with each instruction set encountered by
4204         # the Solaris assembler.  As our libraries contain their own
4205         # guards for processor-specific code, instead suppress
4206         # generation of the HWCAPS ELF section on Solaris x86 only.
4207         enabled_all suncc x86 &&
4208             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4209             add_ldflags -Wl,-M,mapfile
4210         nm_default='nm -P -g'
4211         ;;
4212     netbsd)
4213         disable symver
4214         oss_indev_extralibs="-lossaudio"
4215         oss_outdev_extralibs="-lossaudio"
4216         enabled gcc || check_ldflags -Wl,-zmuldefs
4217         ;;
4218     openbsd|bitrig)
4219         disable symver
4220         SHFLAGS='-shared'
4221         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4222         SLIB_INSTALL_LINKS=
4223         oss_indev_extralibs="-lossaudio"
4224         oss_outdev_extralibs="-lossaudio"
4225         ;;
4226     dragonfly)
4227         disable symver
4228         ;;
4229     freebsd)
4230         ;;
4231     bsd/os)
4232         add_extralibs -lpoll -lgnugetopt
4233         strip="strip -d"
4234         ;;
4235     darwin)
4236         enabled ppc && add_asflags -force_cpusubtype_ALL
4237         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4238         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4239         strip="${strip} -x"
4240         add_ldflags -Wl,-dynamic,-search_paths_first
4241         SLIBSUF=".dylib"
4242         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4243         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4244         objformat="macho"
4245         enabled x86_64 && objformat="macho64"
4246         enabled_any pic shared x86_64 ||
4247             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4248         ;;
4249     mingw32*)
4250         if test $target_os = "mingw32ce"; then
4251             disable network
4252         else
4253             target_os=mingw32
4254         fi
4255         LIBTARGET=i386
4256         if enabled x86_64; then
4257             LIBTARGET="i386:x86-64"
4258         elif enabled arm; then
4259             LIBTARGET=arm-wince
4260         fi
4261         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4262         check_ldflags -Wl,--nxcompat
4263         check_ldflags -Wl,--dynamicbase
4264         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4265         shlibdir_default="$bindir_default"
4266         SLIBPREF=""
4267         SLIBSUF=".dll"
4268         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4269         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4270         dlltool="${cross_prefix}dlltool"
4271         if check_cmd lib.exe -list; then
4272             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4273             if enabled x86_64; then
4274                 LIBTARGET=x64
4275             fi
4276         elif check_cmd $dlltool --version; then
4277             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4278         fi
4279         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4280         SLIB_INSTALL_LINKS=
4281         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4282         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4283         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4284         objformat="win32"
4285         ranlib=:
4286         enable dos_paths
4287         ;;
4288     win32|win64)
4289         disable symver
4290         if enabled shared; then
4291             # Link to the import library instead of the normal static library
4292             # for shared libs.
4293             LD_LIB='%.lib'
4294             # Cannot build both shared and static libs with MSVC or icl.
4295             disable static
4296         fi
4297         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4298         shlibdir_default="$bindir_default"
4299         SLIBPREF=""
4300         SLIBSUF=".dll"
4301         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4302         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4303         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4304         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4305         SLIB_INSTALL_LINKS=
4306         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4307         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4308         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4309         objformat="win32"
4310         ranlib=:
4311         enable dos_paths
4312         ;;
4313     cygwin*)
4314         target_os=cygwin
4315         shlibdir_default="$bindir_default"
4316         SLIBPREF="cyg"
4317         SLIBSUF=".dll"
4318         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4319         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4320         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4321         SLIB_INSTALL_LINKS=
4322         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4323         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4324         objformat="win32"
4325         enable dos_paths
4326         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4327         ;;
4328     *-dos|freedos|opendos)
4329         network_extralibs="-lsocket"
4330         objformat="coff"
4331         enable dos_paths
4332         add_cppflags -U__STRICT_ANSI__
4333         ;;
4334     linux)
4335         enable dv1394
4336         enable section_data_rel_ro
4337         ;;
4338     irix*)
4339         target_os=irix
4340         ranlib="echo ignoring ranlib"
4341         ;;
4342     os/2*)
4343         strip="lxlite -CS"
4344         ln_s="cp -f"
4345         objformat="aout"
4346         add_cppflags -D_GNU_SOURCE
4347         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4348         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4349         LIBSUF="_s.a"
4350         SLIBPREF=""
4351         SLIBSUF=".dll"
4352         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4353         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4354         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4355             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4356             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4357             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4358             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4359         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4360             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4361         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4362         enable dos_paths
4363         enable_weak os2threads
4364         ;;
4365     gnu/kfreebsd)
4366         add_cppflags -D_BSD_SOURCE
4367         ;;
4368     gnu)
4369         ;;
4370     qnx)
4371         add_cppflags -D_QNX_SOURCE
4372         network_extralibs="-lsocket"
4373         ;;
4374     symbian)
4375         SLIBSUF=".dll"
4376         enable dos_paths
4377         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4378         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4379         add_ldflags -Wl,--target1-abs,--no-undefined \
4380                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4381                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4382         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4383                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4384                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4385         ;;
4386     osf1)
4387         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4388         ;;
4389     minix)
4390         ;;
4391     plan9)
4392         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4393                      -D_REENTRANT_SOURCE        \
4394                      -D_RESEARCH_SOURCE         \
4395                      -DFD_SETSIZE=96            \
4396                      -DHAVE_SOCK_OPTS
4397         add_compat strtod.o strtod=avpriv_strtod
4398         network_extralibs='-lbsd'
4399         exeobjs=compat/plan9/main.o
4400         disable ffserver
4401         cp_f='cp'
4402         ;;
4403     none)
4404         ;;
4405     *)
4406         die "Unknown OS '$target_os'."
4407         ;;
4408 esac
4409
4410 # determine libc flavour
4411
4412 probe_libc(){
4413     pfx=$1
4414     pfx_no_=${pfx%_}
4415     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4416     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4417         eval ${pfx}libc_type=uclibc
4418         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4419     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4420         eval ${pfx}libc_type=glibc
4421         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4422     # MinGW headers can be installed on Cygwin, so check for newlib first.
4423     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4424         eval ${pfx}libc_type=newlib
4425         add_${pfx}cppflags -U__STRICT_ANSI__
4426     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4427     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4428         eval ${pfx}libc_type=mingw64
4429         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4430             add_compat msvcrt/snprintf.o
4431             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4432         fi
4433         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4434         eval test \$${pfx_no_}cc_type = "gcc" &&
4435             add_${pfx}cppflags -D__printf__=__gnu_printf__
4436     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4437          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4438         eval ${pfx}libc_type=mingw32
4439         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4440             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4441             die "ERROR: MinGW32 runtime version must be >= 3.15."
4442         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4443         eval test \$${pfx_no_}cc_type = "gcc" &&
4444             add_${pfx}cppflags -D__printf__=__gnu_printf__
4445     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4446         eval ${pfx}libc_type=msvcrt
4447         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4448             if [ "$pfx" = host_ ]; then
4449                 add_host_cppflags -Dsnprintf=_snprintf
4450             else
4451                 add_compat strtod.o strtod=avpriv_strtod
4452                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4453                                              _snprintf=avpriv_snprintf  \
4454                                              vsnprintf=avpriv_vsnprintf
4455             fi
4456         fi
4457         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4458         # 0x601 by default unless something else is set by the user.
4459         # This can easily lead to us detecting functions only present
4460         # in such new versions and producing binaries requiring windows 7.0.
4461         # Therefore explicitly set the default to XP unless the user has
4462         # set something else on the command line.
4463         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4464             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4465     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4466         eval ${pfx}libc_type=klibc
4467     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4468         eval ${pfx}libc_type=bionic
4469     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4470         eval ${pfx}libc_type=solaris
4471         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4472     fi
4473     check_${pfx}cc <<EOF
4474 #include <time.h>
4475 void *v = localtime_r;
4476 EOF
4477 test "$?" != 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
4478 #include <time.h>
4479 void *v = localtime_r;
4480 EOF
4481
4482 }
4483
4484 probe_libc
4485 test -n "$libc_type" && enable libc_$libc_type
4486 probe_libc host_
4487 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4488
4489 case $libc_type in
4490     bionic)
4491         add_compat strtod.o strtod=avpriv_strtod
4492         ;;
4493 esac
4494
4495 # hacks for compiler/libc/os combinations
4496
4497 if enabled_all tms470 libc_glibc; then
4498     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4499     add_cppflags -D__USER_LABEL_PREFIX__=
4500     add_cppflags -D__builtin_memset=memset
4501     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4502     add_cflags   -pds=48    # incompatible redefinition of macro
4503 fi
4504
4505 if enabled_all ccc libc_glibc; then
4506     add_ldflags -Wl,-z,now  # calls to libots crash without this
4507 fi
4508
4509 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4510     add_cppflags '-I\$(SRC_PATH)/compat/float'
4511
4512 esc(){
4513     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4514 }
4515
4516 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4517
4518 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4519
4520 set_default libdir
4521 : ${shlibdir_default:="$libdir"}
4522 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4523
4524 set_default $PATHS_LIST
4525 set_default nm
4526
4527 # we need to build at least one lib type
4528 if ! enabled_any static shared; then
4529     cat <<EOF
4530 At least one library type must be built.
4531 Specify --enable-static to build the static libraries or --enable-shared to
4532 build the shared libraries as well. To only build the shared libraries specify
4533 --disable-static in addition to --enable-shared.
4534 EOF
4535     exit 1;
4536 fi
4537
4538 die_license_disabled() {
4539     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4540 }
4541
4542 die_license_disabled_gpl() {
4543     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4544 }
4545
4546 die_license_disabled gpl frei0r
4547 die_license_disabled gpl libcdio
4548 die_license_disabled gpl libsmbclient
4549 die_license_disabled gpl libutvideo
4550 die_license_disabled gpl libvidstab
4551 die_license_disabled gpl libx264
4552 die_license_disabled gpl libx265
4553 die_license_disabled gpl libxavs
4554 die_license_disabled gpl libxvid
4555 die_license_disabled gpl libzvbi
4556 die_license_disabled gpl x11grab
4557
4558 die_license_disabled nonfree libaacplus
4559 die_license_disabled nonfree libfaac
4560 die_license_disabled nonfree nvenc
4561 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4562 enabled gpl && die_license_disabled_gpl nonfree openssl
4563
4564 die_license_disabled version3 libopencore_amrnb
4565 die_license_disabled version3 libopencore_amrwb
4566 die_license_disabled version3 libsmbclient
4567 die_license_disabled version3 libvo_aacenc
4568 die_license_disabled version3 libvo_amrwbenc
4569
4570 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4571
4572 disabled optimizations || check_cflags -fomit-frame-pointer
4573
4574 enable_weak_pic() {
4575     disabled pic && return
4576     enable pic
4577     add_cppflags -DPIC
4578     case "$target_os" in
4579     mingw*|cygwin*)
4580         ;;
4581     *)
4582         add_cflags -fPIC
4583         ;;
4584     esac
4585     add_asflags  -fPIC
4586 }
4587
4588 enabled pic && enable_weak_pic
4589
4590 check_cc <<EOF || die "Symbol mangling check failed."
4591 int ff_extern;
4592 EOF
4593 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4594 extern_prefix=${sym%%ff_extern*}
4595
4596 check_cc <<EOF && enable_weak inline_asm
4597 void foo(void) { __asm__ volatile ("" ::); }
4598 EOF
4599
4600 _restrict=
4601 for restrict_keyword in restrict __restrict__ __restrict; do
4602     check_cc <<EOF && _restrict=$restrict_keyword && break
4603 void foo(char * $restrict_keyword p);
4604 EOF
4605 done
4606
4607 check_cc <<EOF && enable pragma_deprecated
4608 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4609 EOF
4610
4611 check_cc <<EOF && enable attribute_packed
4612 struct { int x; } __attribute__((packed)) x;
4613 EOF
4614
4615 check_cc <<EOF && enable attribute_may_alias
4616 union { int x; } __attribute__((may_alias)) x;
4617 EOF
4618
4619 check_cc <<EOF || die "endian test failed"
4620 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4621 EOF
4622 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4623
4624 if ! enabled ppc64 || enabled bigendian; then
4625     disable vsx
4626 fi
4627
4628 check_gas() {
4629     log "check_gas using '$as' as AS"
4630     # :vararg is used on aarch64, arm and ppc altivec
4631     check_as <<EOF || return 1
4632 .macro m n, y:vararg=0
4633 \n: .int \y
4634 .endm
4635 m x
4636 EOF
4637     # .altmacro is only used in arm asm
4638     ! enabled arm || check_as <<EOF || return 1
4639 .altmacro
4640 EOF
4641     enable gnu_as
4642     return 0
4643 }
4644
4645 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4646     nogas=:
4647     enabled_any arm aarch64 && nogas=die
4648     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4649     as_noop=-v
4650
4651     case $as_type in
4652         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4653         gcc)  gaspp_as_type=gas ;;
4654         *)    gaspp_as_type=$as_type ;;
4655     esac
4656
4657     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4658
4659     test "${as#*gas-preprocessor.pl}" != "$as" ||
4660     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4661         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4662
4663     if ! check_gas ; then
4664         as=${gas:=$as}
4665         check_gas || \
4666             $nogas "GNU assembler not found, install/update gas-preprocessor"
4667     fi
4668
4669     check_as <<EOF && enable as_func
4670 .func test
4671 .endfunc
4672 EOF
4673 fi
4674
4675 check_inline_asm inline_asm_labels '"1:\n"'
4676
4677 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4678
4679 if enabled aarch64; then
4680     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4681     # internal assembler in clang 3.3 does not support this instruction
4682     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4683     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4684
4685     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4686
4687 elif enabled alpha; then
4688
4689     check_cflags -mieee
4690
4691 elif enabled arm; then
4692
4693     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4694 float func(float a, float b){ return a+b; }
4695 EOF
4696
4697     enabled thumb && check_cflags -mthumb || check_cflags -marm
4698
4699     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4700         enable vfp_args
4701     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4702         case "${cross_prefix:-$cc}" in
4703             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4704             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4705 __asm__ (".eabi_attribute 28, 1");
4706 int main(void) { return 0; }
4707 EOF
4708         esac
4709         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4710     fi
4711
4712     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4713     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4714     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4715     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4716     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4717     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4718     enabled setend  && check_insn setend  'setend be'
4719
4720     [ $target_os = linux ] || [ $target_os = android ] ||
4721         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4722             $ARCH_EXT_LIST_ARM
4723
4724     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4725
4726     check_as <<EOF && enable as_dn_directive
4727 ra .dn d0.i16
4728 .unreq ra
4729 EOF
4730
4731     # llvm's integrated assembler supports .object_arch from llvm 3.5
4732     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4733 .object_arch armv4
4734 EOF
4735
4736     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4737
4738 elif enabled mips; then
4739
4740     # Enable minimum ISA based on selected options
4741     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4742         add_cflags "-mips64r2"
4743         add_asflags "-mips64r2"
4744     elif enabled mips64 && enabled mipsfpu && disabled loongson3; then
4745         add_cflags "-mips64"
4746         add_asflags "-mips64"
4747     elif enabled mipsdspr1 || enabled mipsdspr2; then
4748         add_cflags "-mips32r2 -mfp32"
4749         add_asflags "-mips32r2 -mfp32"
4750     elif enabled mips32r5 || enabled mips64r6; then
4751         check_cflags "-mfp64"
4752         check_ldflags "-mfp64"
4753     fi
4754
4755     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4756      check_ldflags "-mips32r5" &&
4757      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4758     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4759      check_ldflags "-mips64r6" &&
4760      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4761     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4762      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4763     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4764      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4765     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4766      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4767     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4768      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4769     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4770
4771     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4772     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4773     enabled msa && add_asflags "-mmsa"
4774
4775 elif enabled parisc; then
4776
4777     if enabled gcc; then
4778         case $($cc -dumpversion) in
4779             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4780         esac
4781     fi
4782
4783 elif enabled ppc; then
4784
4785     enable local_aligned_8 local_aligned_16 local_aligned_32
4786
4787     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4788     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4789     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4790     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4791
4792     # AltiVec flags: The FSF version of GCC differs from the Apple version
4793     if enabled altivec; then
4794         check_cflags -maltivec -mabi=altivec &&
4795         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4796         check_cflags -faltivec
4797
4798         # check if our compiler supports Motorola AltiVec C API
4799         check_cc <<EOF || disable altivec
4800 $inc_altivec_h
4801 int main(void) {
4802     vector signed int v1 = (vector signed int) { 0 };
4803     vector signed int v2 = (vector signed int) { 1 };
4804     v1 = vec_add(v1, v2);
4805     return 0;
4806 }
4807 EOF
4808
4809         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4810     fi
4811
4812     if enabled vsx; then
4813         check_cflags -mvsx &&
4814         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4815     fi
4816
4817     if enabled power8; then
4818         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4819     fi
4820
4821 elif enabled x86; then
4822
4823     check_builtin rdtsc    intrin.h   "__rdtsc()"
4824     check_builtin mm_empty mmintrin.h "_mm_empty()"
4825
4826     enable local_aligned_8 local_aligned_16 local_aligned_32
4827
4828     # check whether EBP is available on x86
4829     # As 'i' is stored on the stack, this program will crash
4830     # if the base pointer is used to access it because the
4831     # base pointer is cleared in the inline assembly code.
4832     check_exec_crash <<EOF && enable ebp_available
4833 volatile int i=0;
4834 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4835 return i;
4836 EOF
4837
4838     # check whether EBX is available on x86
4839     check_inline_asm ebx_available '""::"b"(0)' &&
4840         check_inline_asm ebx_available '"":::"%ebx"'
4841
4842     # check whether xmm clobbers are supported
4843     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4844
4845     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4846         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4847
4848     # check whether binutils is new enough to compile SSSE3/MMXEXT
4849     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4850     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4851
4852     if ! disabled_any asm mmx yasm; then
4853         if check_cmd $yasmexe --version; then
4854             enabled x86_64 && yasm_extra="-m amd64"
4855             yasm_debug="-g dwarf2"
4856         elif check_cmd nasm -v; then
4857             yasmexe=nasm
4858             yasm_debug="-g -F dwarf"
4859             if enabled x86_64; then
4860                 case "$objformat" in
4861                     elf)   objformat=elf64 ;;
4862                     win32) objformat=win64 ;;
4863                 esac
4864             fi
4865         fi
4866
4867         YASMFLAGS="-f $objformat $yasm_extra"
4868         enabled pic               && append YASMFLAGS "-DPIC"
4869         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4870         case "$objformat" in
4871             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4872         esac
4873
4874         check_yasm "movbe ecx, [5]" && enable yasm ||
4875             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4876         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4877         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4878         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4879         check_yasm "CPU amdnop" || disable cpunop
4880     fi
4881
4882     case "$cpu" in
4883         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4884             disable fast_clz
4885         ;;
4886     esac
4887
4888 fi
4889
4890 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4891
4892 check_ldflags -Wl,--as-needed
4893 check_ldflags -Wl,-z,noexecstack
4894
4895 if check_func dlopen; then
4896     ldl=
4897 elif check_func dlopen -ldl; then
4898     ldl=-ldl
4899 fi
4900
4901 frei0r_filter_extralibs='$ldl'
4902 frei0r_src_filter_extralibs='$ldl'
4903 ladspa_filter_extralibs='$ldl'
4904 nvenc_encoder_extralibs='$ldl'
4905
4906 if ! disabled network; then
4907     check_func getaddrinfo $network_extralibs
4908     check_func getservbyport $network_extralibs
4909     check_func inet_aton $network_extralibs
4910
4911     check_type netdb.h "struct addrinfo"
4912     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4913     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4914     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4915     check_type poll.h "struct pollfd"
4916     check_type netinet/sctp.h "struct sctp_event_subscribe"
4917     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4918     check_type netinet/in.h "struct sockaddr_in6"
4919     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4920     check_type "sys/types.h sys/socket.h" socklen_t
4921
4922     # Prefer arpa/inet.h over winsock2
4923     if check_header arpa/inet.h ; then
4924         check_func closesocket
4925     elif check_header winsock2.h ; then
4926         check_func_headers winsock2.h closesocket -lws2 &&
4927             network_extralibs="-lws2" ||
4928         { check_func_headers winsock2.h closesocket -lws2_32 &&
4929             network_extralibs="-lws2_32"; } || disable winsock2_h network
4930         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4931
4932         check_type ws2tcpip.h socklen_t
4933         check_type ws2tcpip.h "struct addrinfo"
4934         check_type ws2tcpip.h "struct group_source_req"
4935         check_type ws2tcpip.h "struct ip_mreq_source"
4936         check_type ws2tcpip.h "struct ipv6_mreq"
4937         check_type winsock2.h "struct pollfd"
4938         check_struct winsock2.h "struct sockaddr" sa_len
4939         check_type ws2tcpip.h "struct sockaddr_in6"
4940         check_type ws2tcpip.h "struct sockaddr_storage"
4941     else
4942         disable network
4943     fi
4944 fi
4945
4946 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4947 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4948 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4949 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4950 check_builtin sarestart signal.h "SA_RESTART"
4951 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4952 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
4953 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
4954
4955 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4956 check_func  ${malloc_prefix}memalign            && enable memalign
4957 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4958
4959 check_func  access
4960 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4961 check_func  fcntl
4962 check_func  fork
4963 check_func  gethrtime
4964 check_func  getopt
4965 check_func  getrusage
4966 check_func  gettimeofday
4967 check_func  isatty
4968 check_func  mach_absolute_time
4969 check_func  mkstemp
4970 check_func  mmap
4971 check_func  mprotect
4972 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4973 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4974 check_func  sched_getaffinity
4975 check_func  setrlimit
4976 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4977 check_func  strerror_r
4978 check_func  sysconf
4979 check_func  sysctl
4980 check_func  usleep
4981
4982 check_func_headers conio.h kbhit
4983 check_func_headers io.h setmode
4984 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4985 check_func_headers stdlib.h getenv
4986
4987 check_func_headers windows.h CoTaskMemFree -lole32
4988 check_func_headers windows.h GetProcessAffinityMask
4989 check_func_headers windows.h GetProcessTimes
4990 check_func_headers windows.h GetSystemTimeAsFileTime
4991 check_func_headers windows.h MapViewOfFile
4992 check_func_headers windows.h PeekNamedPipe
4993 check_func_headers windows.h SetConsoleTextAttribute
4994 check_func_headers windows.h SetConsoleCtrlHandler
4995 check_func_headers windows.h Sleep
4996 check_func_headers windows.h VirtualAlloc
4997 check_struct windows.h "CONDITION_VARIABLE" Ptr
4998 check_func_headers glob.h glob
4999 enabled xlib &&
5000     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5001
5002 check_header direct.h
5003 check_header dlfcn.h
5004 check_header d3d11.h
5005 check_header dxva.h
5006 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5007 check_header io.h
5008 check_header libcrystalhd/libcrystalhd_if.h
5009 check_header mach/mach_time.h
5010 check_header malloc.h
5011 check_header net/udplite.h
5012 check_header poll.h
5013 check_header sys/mman.h
5014 check_header sys/param.h
5015 check_header sys/resource.h
5016 check_header sys/select.h
5017 check_header sys/time.h
5018 check_header sys/un.h
5019 check_header termios.h
5020 check_header unistd.h
5021 check_header valgrind/valgrind.h
5022 check_header vdpau/vdpau.h
5023 check_header vdpau/vdpau_x11.h
5024 check_header VideoDecodeAcceleration/VDADecoder.h
5025 check_header windows.h
5026 check_header X11/extensions/XvMClib.h
5027 check_header asm/types.h
5028
5029 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5030 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5031 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5032
5033 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5034
5035 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
5036 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5037 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
5038
5039 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5040
5041 if ! disabled w32threads && ! enabled pthreads; then
5042     check_func_headers "windows.h process.h" _beginthreadex &&
5043         enable w32threads || disable w32threads
5044 fi
5045
5046 # check for some common methods of building with pthread support
5047 # do this before the optional library checks as some of them require pthreads
5048 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5049     enable pthreads
5050     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5051         add_cflags -pthread
5052         add_extralibs -pthread
5053     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5054         add_cflags -pthreads
5055         add_extralibs -pthreads
5056     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5057         add_cflags -ldl -pthread
5058         add_extralibs -ldl -pthread
5059     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5060         add_extralibs -lpthreadGC2
5061     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5062         :
5063     elif ! check_func pthread_join && ! check_func pthread_create; then
5064         disable pthreads
5065     fi
5066     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5067 fi
5068
5069
5070 if enabled pthreads; then
5071   check_func pthread_cancel
5072 fi
5073
5074 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5075 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5076 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5077
5078 check_lib math.h sin -lm && LIBM="-lm"
5079 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5080
5081 atan2f_args=2
5082 ldexpf_args=2
5083 powf_args=2
5084
5085 for func in $MATH_FUNCS; do
5086     eval check_mathfunc $func \${${func}_args:-1}
5087 done
5088
5089 # these are off by default, so fail if requested and not available
5090 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5091 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5092                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5093 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5094                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5095                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5096 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5097 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5098 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5099 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5100 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5101 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5102 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5103 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5104 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5105 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5106                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5107                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5108 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5109 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create
5110 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5111 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5112                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5113                                  warn "using libfdk without pkg-config"; } }
5114 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"
5115 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5116 enabled fontconfig        && enable libfontconfig
5117 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5118 enabled libfreetype       && require_libfreetype
5119 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5120 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5121 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5122                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5123                                done || die "ERROR: libgsm not found"; }
5124 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5125 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5126 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5127 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5128 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5129 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5130 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5131 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5132 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5133 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5134                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5135                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5136                                die "ERROR: libopenjpeg not found"; }
5137 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5138 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5139 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5140 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5141 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5142 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5143 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5144                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5145 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5146 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5147 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5148 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5149 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5150     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5151     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5152 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5153 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5154                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5155                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5156 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5157 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5158 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5159 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5160 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5161 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5162
5163 enabled libvpx            && {
5164     enabled libvpx_vp8_decoder && {
5165         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5166             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5167                 die "ERROR: libvpx decoder version must be >=0.9.1";
5168     }
5169     enabled libvpx_vp8_encoder && {
5170         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5171             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5172                 die "ERROR: libvpx encoder version must be >=0.9.7";
5173     }
5174     enabled libvpx_vp9_decoder && {
5175         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5176             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5177                 disable libvpx_vp9_decoder;
5178     }
5179     enabled libvpx_vp9_encoder && {
5180         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5181             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5182                 disable libvpx_vp9_encoder;
5183     }
5184     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5185         die "libvpx enabled but no supported decoders found"
5186     fi
5187 }
5188
5189 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5190 enabled libwebp           && {
5191     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5192     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5193 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5194                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5195                                  warn "using libx264 without pkg-config"; } } &&
5196                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5197                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5198 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5199                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5200                                die "ERROR: libx265 version must be >= 57."; }
5201 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5202 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5203 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5204 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5205 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5206                                 { ! enabled cross_compile && {
5207                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5208                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5209                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5210                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5211                                die "ERROR: mmal not found"; }
5212 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5213                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5214                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5215                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5216 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5217                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5218                                die "ERROR: openal not found"; } &&
5219                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5220                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5221 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5222                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5223                                die "ERROR: opencl not found"; } &&
5224                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5225                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5226                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5227 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5228                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5229                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5230                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5231                                die "ERROR: opengl not found."
5232                              }
5233 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5234                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5235                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5236                                die "ERROR: openssl not found"; }
5237 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5238
5239 if enabled gnutls; then
5240     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
5241     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5242 fi
5243
5244 # libdc1394 check
5245 if enabled libdc1394; then
5246     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5247         enable libdc1394_2; } ||
5248     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5249         enable libdc1394_1; } ||
5250     die "ERROR: No version of libdc1394 found "
5251 fi
5252 if ! disabled sdl; then
5253     SDL_CONFIG="${cross_prefix}sdl-config"
5254     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5255         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5256         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5257         enable sdl
5258     else
5259         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5260             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5261             sdl_libs=$("${SDL_CONFIG}" --libs)
5262             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5263             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5264             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5265             enable sdl
5266         elif enabled sdl ; then
5267             die "ERROR: SDL not found"
5268         else
5269             disable sdl
5270         fi
5271     fi
5272 fi
5273 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5274
5275 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5276     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5277     enable securetransport; }
5278
5279 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5280 enabled makeinfo \
5281     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5282     && enable makeinfo_html || disable makeinfo_html
5283 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5284 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5285 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5286 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5287
5288 check_header linux/fb.h
5289 check_header linux/videodev.h
5290 check_header linux/videodev2.h
5291 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5292
5293 check_header sys/videoio.h
5294 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5295
5296 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5297 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5298 # w32api 3.12 had it defined wrong
5299 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5300
5301 check_type "dshow.h" IBaseFilter
5302
5303 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5304 { check_header dev/bktr/ioctl_meteor.h &&
5305   check_header dev/bktr/ioctl_bt848.h; } ||
5306 { check_header machine/ioctl_meteor.h &&
5307   check_header machine/ioctl_bt848.h; } ||
5308 { check_header dev/video/meteor/ioctl_meteor.h &&
5309   check_header dev/video/bktr/ioctl_bt848.h; } ||
5310 check_header dev/ic/bt8xx.h
5311
5312 check_header sndio.h
5313 if check_struct sys/soundcard.h audio_buf_info bytes; then
5314     enable_safe sys/soundcard.h
5315 else
5316     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5317     #include <sys/soundcard.h>
5318     audio_buf_info abc;
5319 EOF
5320 fi
5321 check_header soundcard.h
5322
5323 enabled_any alsa_indev alsa_outdev &&
5324     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5325
5326 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5327     check_func jack_port_get_latency_range -ljack
5328
5329 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5330
5331 if enabled libcdio; then
5332     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5333     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5334     die "ERROR: No usable libcdio/cdparanoia found"
5335 fi
5336
5337 enabled xlib &&
5338     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5339
5340 if ! disabled libxcb; then
5341     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5342         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5343     } && disable x11grab && enable libxcb
5344
5345 if enabled libxcb; then
5346     disabled libxcb_shm || {
5347         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5348             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5349         } && check_header sys/shm.h && enable libxcb_shm; }
5350
5351     disabled libxcb_xfixes || {
5352         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5353             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5354         } && enable libxcb_xfixes; }
5355
5356     disabled libxcb_shape || {
5357         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5358             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5359         } && enable libxcb_shape; }
5360
5361     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5362     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5363 fi
5364 fi
5365
5366 if enabled x11grab; then
5367     enabled xlib || die "ERROR: Xlib not found"
5368     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5369     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5370 fi
5371
5372 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5373
5374 enabled dxva2api_h &&
5375     check_cc <<EOF && enable dxva2api_cobj
5376 #define _WIN32_WINNT 0x0600
5377 #define COBJMACROS
5378 #include <windows.h>
5379 #include <d3d9.h>
5380 #include <dxva2api.h>
5381 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5382 EOF
5383
5384 enabled vaapi &&
5385     check_lib va/va.h vaInitialize -lva ||
5386     disable vaapi
5387
5388 enabled vaapi && enabled xlib &&
5389     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5390     enable vaapi_x11
5391
5392 enabled vdpau &&
5393     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5394     disable vdpau
5395
5396 enabled vdpau && enabled xlib &&
5397     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5398     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5399     enable vdpau_x11
5400
5401 # Funny iconv installations are not unusual, so check it after all flags have been set
5402 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5403
5404 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5405
5406 # add some useful compiler flags if supported
5407 check_cflags -Wdeclaration-after-statement
5408 check_cflags -Wall
5409 check_cflags -Wdisabled-optimization
5410 check_cflags -Wpointer-arith
5411 check_cflags -Wredundant-decls
5412 check_cflags -Wwrite-strings
5413 check_cflags -Wtype-limits
5414 check_cflags -Wundef
5415 check_cflags -Wmissing-prototypes
5416 check_cflags -Wno-pointer-to-int-cast
5417 check_cflags -Wstrict-prototypes
5418 check_cflags -Wempty-body
5419 enabled extra_warnings && check_cflags -Winline
5420
5421 check_disable_warning(){
5422     warning_flag=-W${1#-Wno-}
5423     test_cflags $warning_flag && add_cflags $1
5424 }
5425
5426 check_disable_warning -Wno-parentheses
5427 check_disable_warning -Wno-switch
5428 check_disable_warning -Wno-format-zero-length
5429 check_disable_warning -Wno-pointer-sign
5430
5431 # add some linker flags
5432 check_ldflags -Wl,--warn-common
5433 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5434 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5435 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5436
5437 # add some strip flags
5438 # -wN '..@*' is more selective than -x, but not available everywhere.
5439 check_stripflags -wN \'..@*\' || check_stripflags -x
5440
5441 enabled neon_clobber_test &&
5442     check_ldflags -Wl,--wrap,avcodec_open2              \
5443                   -Wl,--wrap,avcodec_decode_audio4      \
5444                   -Wl,--wrap,avcodec_decode_video2      \
5445                   -Wl,--wrap,avcodec_decode_subtitle2   \
5446                   -Wl,--wrap,avcodec_encode_audio2      \
5447                   -Wl,--wrap,avcodec_encode_video2      \
5448                   -Wl,--wrap,avcodec_encode_subtitle    \
5449                   -Wl,--wrap,swr_convert                \
5450                   -Wl,--wrap,avresample_convert ||
5451     disable neon_clobber_test
5452
5453 enabled xmm_clobber_test &&
5454     check_ldflags -Wl,--wrap,avcodec_open2              \
5455                   -Wl,--wrap,avcodec_decode_audio4      \
5456                   -Wl,--wrap,avcodec_decode_video2      \
5457                   -Wl,--wrap,avcodec_decode_subtitle2   \
5458                   -Wl,--wrap,avcodec_encode_audio2      \
5459                   -Wl,--wrap,avcodec_encode_video       \
5460                   -Wl,--wrap,avcodec_encode_video2      \
5461                   -Wl,--wrap,avcodec_encode_subtitle    \
5462                   -Wl,--wrap,swr_convert                \
5463                   -Wl,--wrap,avresample_convert         \
5464                   -Wl,--wrap,sws_scale ||
5465     disable xmm_clobber_test
5466
5467 echo "X{};" > $TMPV
5468 if test_ldflags -Wl,--version-script,$TMPV; then
5469     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5470     check_cc <<EOF && enable symver_asm_label
5471 void ff_foo(void) __asm__ ("av_foo@VERSION");
5472 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5473 EOF
5474     check_cc <<EOF && enable symver_gnu_asm
5475 __asm__(".symver ff_foo,av_foo@VERSION");
5476 void ff_foo(void) {}
5477 EOF
5478 fi
5479
5480 if [ -z "$optflags" ]; then
5481     if enabled small; then
5482         optflags=$cflags_size
5483     elif enabled optimizations; then
5484         optflags=$cflags_speed
5485     else
5486         optflags=$cflags_noopt
5487     fi
5488 fi
5489
5490 check_optflags(){
5491     check_cflags "$@"
5492     enabled lto && check_ldflags "$@"
5493 }
5494
5495
5496 if enabled lto; then
5497     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5498     check_cflags  -flto
5499     check_ldflags -flto $cpuflags
5500     disable inline_asm_direct_symbol_refs
5501 fi
5502
5503 check_optflags $optflags
5504 check_optflags -fno-math-errno
5505 check_optflags -fno-signed-zeros
5506
5507 enabled ftrapv && check_cflags -ftrapv
5508
5509 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5510 int x;
5511 EOF
5512
5513
5514 if enabled icc; then
5515     # Just warnings, no remarks
5516     check_cflags -w1
5517     # -wd: Disable following warnings
5518     # 144, 167, 556: -Wno-pointer-sign
5519     # 188: enumerated type mixed with another type
5520     # 1292: attribute "foo" ignored
5521     # 1419: external declaration in primary source file
5522     # 10006: ignoring unknown option -fno-signed-zeros
5523     # 10148: ignoring unknown option -Wno-parentheses
5524     # 10156: ignoring option '-W'; no argument required
5525     # 13200: No EMMS instruction before call to function
5526     # 13203: No EMMS instruction before return from function
5527     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5528     # 11030: Warning unknown option --as-needed
5529     # 10156: ignoring option '-export'; no argument required
5530     check_ldflags -wd10156,11030
5531     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5532     enable ebp_available
5533     # The test above does not test linking
5534     enabled lto && disable symver_asm_label
5535     if enabled x86_32; then
5536         icc_version=$($cc -dumpversion)
5537         test ${icc_version%%.*} -ge 11 &&
5538             check_cflags -falign-stack=maintain-16-byte ||
5539             disable aligned_stack
5540     fi
5541 elif enabled ccc; then
5542     # disable some annoying warnings
5543     add_cflags -msg_disable bitnotint
5544     add_cflags -msg_disable mixfuncvoid
5545     add_cflags -msg_disable nonstandcast
5546     add_cflags -msg_disable unsupieee
5547 elif enabled gcc; then
5548     check_optflags -fno-tree-vectorize
5549     check_cflags -Werror=format-security
5550     check_cflags -Werror=implicit-function-declaration
5551     check_cflags -Werror=missing-prototypes
5552     check_cflags -Werror=return-type
5553     check_cflags -Werror=vla
5554     check_cflags -Wformat
5555     check_cflags -fdiagnostics-color=auto
5556     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5557 elif enabled llvm_gcc; then
5558     check_cflags -mllvm -stack-alignment=16
5559 elif enabled clang; then
5560     check_cflags -mllvm -stack-alignment=16
5561     check_cflags -Qunused-arguments
5562     check_cflags -Werror=implicit-function-declaration
5563     check_cflags -Werror=missing-prototypes
5564     check_cflags -Werror=return-type
5565 elif enabled cparser; then
5566     add_cflags -Wno-missing-variable-declarations
5567     add_cflags -Wno-empty-statement
5568 elif enabled armcc; then
5569     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5570     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5571     # 2523: use of inline assembly is deprecated
5572     add_cflags -W${armcc_opt},--diag_suppress=2523
5573     add_cflags -W${armcc_opt},--diag_suppress=1207
5574     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5575     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5576     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5577     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5578 elif enabled tms470; then
5579     add_cflags -pds=824 -pds=837
5580     disable inline_asm
5581 elif enabled pathscale; then
5582     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5583 elif enabled_any msvc icl; then
5584     enabled x86_32 && disable aligned_stack
5585     enabled_all x86_32 debug && add_cflags -Oy-
5586     enabled debug && add_ldflags -debug
5587     enable pragma_deprecated
5588     if enabled icl; then
5589         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5590         # (correctly) on icl 13.x.
5591         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5592             add_cflags -Qansi-alias
5593         # Some inline asm is not compilable in debug
5594         if enabled debug; then
5595             disable ebp_available
5596             disable ebx_available
5597         fi
5598     fi
5599     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5600     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5601 fi
5602
5603 case $as_type in
5604     clang)
5605         add_asflags -Qunused-arguments
5606     ;;
5607 esac
5608
5609 case $ld_type in
5610     clang)
5611         check_ldflags -Qunused-arguments
5612     ;;
5613 esac
5614
5615 case $target_os in
5616     osf1)
5617         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5618     ;;
5619     plan9)
5620         add_cppflags -Dmain=plan9_main
5621     ;;
5622 esac
5623
5624 enable frame_thread_encoder
5625
5626 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5627
5628 check_deps $CONFIG_LIST       \
5629            $CONFIG_EXTRA      \
5630            $HAVE_LIST         \
5631            $ALL_COMPONENTS    \
5632
5633 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"
5634
5635
5636 if test $target_os = "haiku"; then
5637     disable memalign
5638     disable posix_memalign
5639 fi
5640
5641 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5642     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5643     enable dxva2_lib
5644
5645 ! enabled_any memalign posix_memalign aligned_malloc &&
5646     enabled simd_align_16 && enable memalign_hack
5647
5648 # add_dep lib dep
5649 # -> enable ${lib}_deps_${dep}
5650 # -> add $dep to ${lib}_deps only once
5651 add_dep() {
5652     lib=$1
5653     dep=$2
5654     enabled "${lib}_deps_${dep}" && return 0
5655     enable  "${lib}_deps_${dep}"
5656     prepend "${lib}_deps" $dep
5657 }
5658
5659 # merge deps lib components
5660 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5661 merge_deps() {
5662     lib=$1
5663     shift
5664     for comp in $*; do
5665         enabled $comp || continue
5666         eval "dep=\"\$${comp}_deps\""
5667         for d in $dep; do
5668             add_dep $lib $d
5669         done
5670     done
5671 }
5672
5673 merge_deps libavfilter $FILTER_LIST
5674
5675 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5676
5677 for thread in $THREADS_LIST; do
5678     if enabled $thread; then
5679         test -n "$thread_type" &&
5680             die "ERROR: Only one thread type must be selected." ||
5681             thread_type="$thread"
5682     fi
5683 done
5684
5685 enabled zlib && add_cppflags -DZLIB_CONST
5686
5687 # conditional library dependencies, in linking order
5688 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5689 enabled aresample_filter    && prepend avfilter_deps "swresample"
5690 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5691 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5692 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5693 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5694 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5695 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5696 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5697 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5698 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5699 enabled pan_filter          && prepend avfilter_deps "swresample"
5700 enabled pp_filter           && prepend avfilter_deps "postproc"
5701 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5702 enabled resample_filter && prepend avfilter_deps "avresample"
5703 enabled sab_filter          && prepend avfilter_deps "swscale"
5704 enabled scale_filter    && prepend avfilter_deps "swscale"
5705 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5706 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5707 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5708 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5709
5710 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5711
5712 enabled opus_decoder    && prepend avcodec_deps "swresample"
5713
5714 expand_deps(){
5715     lib_deps=${1}_deps
5716     eval "deps=\$$lib_deps"
5717     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5718     unique $lib_deps
5719 }
5720
5721 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5722 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5723
5724 map 'expand_deps $v' $LIBRARY_LIST
5725
5726 echo "install prefix            $prefix"
5727 echo "source path               $source_path"
5728 echo "C compiler                $cc"
5729 echo "C library                 $libc_type"
5730 if test "$host_cc" != "$cc"; then
5731     echo "host C compiler           $host_cc"
5732     echo "host C library            $host_libc_type"
5733 fi
5734 echo "ARCH                      $arch ($cpu)"
5735 if test "$build_suffix" != ""; then
5736     echo "build suffix              $build_suffix"
5737 fi
5738 if test "$progs_suffix" != ""; then
5739     echo "progs suffix              $progs_suffix"
5740 fi
5741 if test "$extra_version" != ""; then
5742     echo "version string suffix     $extra_version"
5743 fi
5744 echo "big-endian                ${bigendian-no}"
5745 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5746 if enabled x86; then
5747     echo "${yasmexe}                      ${yasm-no}"
5748     echo "MMX enabled               ${mmx-no}"
5749     echo "MMXEXT enabled            ${mmxext-no}"
5750     echo "3DNow! enabled            ${amd3dnow-no}"
5751     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5752     echo "SSE enabled               ${sse-no}"
5753     echo "SSSE3 enabled             ${ssse3-no}"
5754     echo "AVX enabled               ${avx-no}"
5755     echo "XOP enabled               ${xop-no}"
5756     echo "FMA3 enabled              ${fma3-no}"
5757     echo "FMA4 enabled              ${fma4-no}"
5758     echo "i686 features enabled     ${i686-no}"
5759     echo "CMOV is fast              ${fast_cmov-no}"
5760     echo "EBX available             ${ebx_available-no}"
5761     echo "EBP available             ${ebp_available-no}"
5762 fi
5763 if enabled aarch64; then
5764     echo "NEON enabled              ${neon-no}"
5765     echo "VFP enabled               ${vfp-no}"
5766 fi
5767 if enabled arm; then
5768     echo "ARMv5TE enabled           ${armv5te-no}"
5769     echo "ARMv6 enabled             ${armv6-no}"
5770     echo "ARMv6T2 enabled           ${armv6t2-no}"
5771     echo "VFP enabled               ${vfp-no}"
5772     echo "NEON enabled              ${neon-no}"
5773     echo "THUMB enabled             ${thumb-no}"
5774 fi
5775 if enabled mips; then
5776     echo "MIPS FPU enabled          ${mipsfpu-no}"
5777     echo "MIPS32R5 enabled          ${mips32r5-no}"
5778     echo "MIPS64R6 enabled          ${mips64r6-no}"
5779     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5780     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5781     echo "MIPS MSA enabled          ${msa-no}"
5782     echo "LOONGSON3 enabled         ${loongson3-no}"
5783 fi
5784 if enabled ppc; then
5785     echo "AltiVec enabled           ${altivec-no}"
5786     echo "VSX enabled               ${vsx-no}"
5787     echo "POWER8 enabled            ${power8-no}"
5788     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5789     echo "dcbzl available           ${dcbzl-no}"
5790 fi
5791 echo "debug symbols             ${debug-no}"
5792 echo "strip symbols             ${stripping-no}"
5793 echo "optimize for size         ${small-no}"
5794 echo "optimizations             ${optimizations-no}"
5795 echo "static                    ${static-no}"
5796 echo "shared                    ${shared-no}"
5797 echo "postprocessing support    ${postproc-no}"
5798 echo "new filter support        ${avfilter-no}"
5799 echo "network support           ${network-no}"
5800 echo "threading support         ${thread_type-no}"
5801 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5802 echo "SDL support               ${sdl-no}"
5803 echo "opencl enabled            ${opencl-no}"
5804 echo "texi2html enabled         ${texi2html-no}"
5805 echo "perl enabled              ${perl-no}"
5806 echo "pod2man enabled           ${pod2man-no}"
5807 echo "makeinfo enabled          ${makeinfo-no}"
5808 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5809 test -n "$random_seed" &&
5810     echo "random seed               ${random_seed}"
5811 echo
5812
5813 echo "External libraries:"
5814 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5815 echo
5816
5817 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5818     echo "Enabled ${type}s:"
5819     eval list=\$$(toupper $type)_LIST
5820     print_enabled '_*' $list | print_3_columns
5821     echo
5822 done
5823
5824 license="LGPL version 2.1 or later"
5825 if enabled nonfree; then
5826     license="nonfree and unredistributable"
5827 elif enabled gplv3; then
5828     license="GPL version 3 or later"
5829 elif enabled lgplv3; then
5830     license="LGPL version 3 or later"
5831 elif enabled gpl; then
5832     license="GPL version 2 or later"
5833 fi
5834
5835 echo "License: $license"
5836
5837 echo "Creating config.mak, config.h, and doc/config.texi..."
5838
5839 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5840
5841 enabled stripping || strip="echo skipping strip"
5842
5843 config_files="$TMPH config.mak doc/config.texi"
5844
5845 cat > config.mak <<EOF
5846 # Automatically generated by configure - do not modify!
5847 ifndef FFMPEG_CONFIG_MAK
5848 FFMPEG_CONFIG_MAK=1
5849 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5850 prefix=$prefix
5851 LIBDIR=\$(DESTDIR)$libdir
5852 SHLIBDIR=\$(DESTDIR)$shlibdir
5853 INCDIR=\$(DESTDIR)$incdir
5854 BINDIR=\$(DESTDIR)$bindir
5855 DATADIR=\$(DESTDIR)$datadir
5856 DOCDIR=\$(DESTDIR)$docdir
5857 MANDIR=\$(DESTDIR)$mandir
5858 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
5859 SRC_PATH=$source_path
5860 ifndef MAIN_MAKEFILE
5861 SRC_PATH:=\$(SRC_PATH:.%=..%)
5862 endif
5863 CC_IDENT=$cc_ident
5864 ARCH=$arch
5865 INTRINSICS=$intrinsics
5866 CC=$cc
5867 CXX=$cxx
5868 AS=$as
5869 LD=$ld
5870 DEPCC=$dep_cc
5871 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5872 DEPAS=$as
5873 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5874 YASM=$yasmexe
5875 DEPYASM=$yasmexe
5876 AR=$ar
5877 ARFLAGS=$arflags
5878 AR_O=$ar_o
5879 RANLIB=$ranlib
5880 STRIP=$strip
5881 CP=cp -p
5882 LN_S=$ln_s
5883 CPPFLAGS=$CPPFLAGS
5884 CFLAGS=$CFLAGS
5885 CXXFLAGS=$CXXFLAGS
5886 ASFLAGS=$ASFLAGS
5887 AS_C=$AS_C
5888 AS_O=$AS_O
5889 CC_C=$CC_C
5890 CC_E=$CC_E
5891 CC_O=$CC_O
5892 CXX_C=$CXX_C
5893 CXX_O=$CXX_O
5894 LD_O=$LD_O
5895 LD_LIB=$LD_LIB
5896 LD_PATH=$LD_PATH
5897 DLLTOOL=$dlltool
5898 WINDRES=$windres
5899 DEPWINDRES=$dep_cc
5900 DOXYGEN=$doxygen
5901 LDFLAGS=$LDFLAGS
5902 LDEXEFLAGS=$LDEXEFLAGS
5903 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5904 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5905 YASMFLAGS=$YASMFLAGS
5906 BUILDSUF=$build_suffix
5907 PROGSSUF=$progs_suffix
5908 FULLNAME=$FULLNAME
5909 LIBPREF=$LIBPREF
5910 LIBSUF=$LIBSUF
5911 LIBNAME=$LIBNAME
5912 SLIBPREF=$SLIBPREF
5913 SLIBSUF=$SLIBSUF
5914 EXESUF=$EXESUF
5915 EXTRA_VERSION=$extra_version
5916 CCDEP=$CCDEP
5917 CXXDEP=$CXXDEP
5918 CCDEP_FLAGS=$CCDEP_FLAGS
5919 ASDEP=$ASDEP
5920 ASDEP_FLAGS=$ASDEP_FLAGS
5921 CC_DEPFLAGS=$CC_DEPFLAGS
5922 AS_DEPFLAGS=$AS_DEPFLAGS
5923 HOSTCC=$host_cc
5924 HOSTLD=$host_ld
5925 HOSTCFLAGS=$host_cflags
5926 HOSTCPPFLAGS=$host_cppflags
5927 HOSTEXESUF=$HOSTEXESUF
5928 HOSTLDFLAGS=$host_ldflags
5929 HOSTLIBS=$host_libs
5930 DEPHOSTCC=$host_cc
5931 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5932 HOSTCCDEP=$HOSTCCDEP
5933 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5934 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5935 HOSTCC_C=$HOSTCC_C
5936 HOSTCC_O=$HOSTCC_O
5937 HOSTLD_O=$HOSTLD_O
5938 TARGET_EXEC=$target_exec $target_exec_args
5939 TARGET_PATH=$target_path
5940 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5941 CFLAGS-ffplay=$sdl_cflags
5942 ZLIB=$($ldflags_filter -lz)
5943 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5944 EXTRALIBS=$extralibs
5945 COMPAT_OBJS=$compat_objs
5946 EXEOBJS=$exeobjs
5947 INSTALL=$install
5948 LIBTARGET=${LIBTARGET}
5949 SLIBNAME=${SLIBNAME}
5950 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5951 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5952 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5953 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5954 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5955 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5956 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5957 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5958 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5959 NOREDZONE_FLAGS=$noredzone_flags
5960 EOF
5961
5962 get_version(){
5963     lcname=lib${1}
5964     name=$(toupper $lcname)
5965     file=$source_path/$lcname/version.h
5966     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5967     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5968     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5969     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5970     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5971     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5972 }
5973
5974 map 'get_version $v' $LIBRARY_LIST
5975
5976 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5977
5978 print_program_libs(){
5979     eval "program_libs=\$${1}_libs"
5980     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5981 }
5982
5983 map 'print_program_libs $v' $PROGRAM_LIST
5984
5985 cat > $TMPH <<EOF
5986 /* Automatically generated by configure - do not modify! */
5987 #ifndef FFMPEG_CONFIG_H
5988 #define FFMPEG_CONFIG_H
5989 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5990 #define FFMPEG_LICENSE "$(c_escape $license)"
5991 #define CONFIG_THIS_YEAR 2015
5992 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5993 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5994 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5995 #define av_restrict $_restrict
5996 #define EXTERN_PREFIX "${extern_prefix}"
5997 #define EXTERN_ASM ${extern_prefix}
5998 #define BUILDSUF "$build_suffix"
5999 #define SLIBSUF "$SLIBSUF"
6000 #define HAVE_MMX2 HAVE_MMXEXT
6001 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6002 EOF
6003
6004 test -n "$assert_level" &&
6005     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6006
6007 test -n "$malloc_prefix" &&
6008     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6009
6010 if enabled yasm; then
6011     append config_files $TMPASM
6012     printf '' >$TMPASM
6013 fi
6014
6015 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6016
6017
6018 mkdir -p doc
6019 mkdir -p tests
6020 mkdir -p tests/api
6021 echo "@c auto-generated by configure" > doc/config.texi
6022
6023 print_config ARCH_   "$config_files" $ARCH_LIST
6024 print_config HAVE_   "$config_files" $HAVE_LIST
6025 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6026                                      $CONFIG_EXTRA      \
6027                                      $ALL_COMPONENTS    \
6028
6029 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6030 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6031
6032 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6033 cp_if_changed $TMPH config.h
6034 touch .config
6035
6036 enabled yasm && cp_if_changed $TMPASM config.asm
6037
6038 cat > $TMPH <<EOF
6039 /* Generated by ffconf */
6040 #ifndef AVUTIL_AVCONFIG_H
6041 #define AVUTIL_AVCONFIG_H
6042 EOF
6043
6044 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6045
6046 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6047
6048 cp_if_changed $TMPH libavutil/avconfig.h
6049
6050 if test -n "$WARNINGS"; then
6051     printf "\n$WARNINGS"
6052     enabled fatal_warnings && exit 1
6053 fi
6054
6055 # build pkg-config files
6056
6057 lib_version(){
6058     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6059 }
6060
6061 pkgconfig_generate(){
6062     name=$1
6063     shortname=${name#lib}${build_suffix}
6064     comment=$2
6065     version=$3
6066     libs=$4
6067     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6068     requires=${requires%, }
6069     enabled ${name#lib} || return 0
6070     mkdir -p $name
6071     cat <<EOF > $name/$name${build_suffix}.pc
6072 prefix=$prefix
6073 exec_prefix=\${prefix}
6074 libdir=$libdir
6075 includedir=$incdir
6076
6077 Name: $name
6078 Description: $comment
6079 Version: $version
6080 Requires: $(enabled shared || echo $requires)
6081 Requires.private: $(enabled shared && echo $requires)
6082 Conflicts:
6083 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6084 Libs.private: $(enabled shared && echo $libs)
6085 Cflags: -I\${includedir}
6086 EOF
6087
6088 mkdir -p doc/examples/pc-uninstalled
6089 includedir=${source_path}
6090 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6091     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6092 prefix=
6093 exec_prefix=
6094 libdir=\${pcfiledir}/../../../$name
6095 includedir=${includedir}
6096
6097 Name: $name
6098 Description: $comment
6099 Version: $version
6100 Requires: $requires
6101 Conflicts:
6102 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6103 Cflags: -I\${includedir}
6104 EOF
6105 }
6106
6107 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6108 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6109 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6110 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6111 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6112 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6113 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6114 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6115 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"