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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-avutil         disable libavutil build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 200   --enable-frei0r          enable frei0r video filtering [no]
 201   --enable-gnutls          enable gnutls, needed for https support
 202                            if openssl is not used [no]
 203   --disable-iconv          disable iconv [autodetect]
 204   --enable-ladspa          enable LADSPA audio filtering [no]
 205   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 206   --enable-libass          enable libass subtitles rendering,
 207                            needed for subtitles and ass filter [no]
 208   --enable-libbluray       enable BluRay reading using libbluray [no]
 209   --enable-libbs2b         enable bs2b DSP library [no]
 210   --enable-libcaca         enable textual display using libcaca [no]
 211   --enable-libcelt         enable CELT decoding via libcelt [no]
 212   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 213   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 214                            and libraw1394 [no]
 215   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 216   --enable-libfaac         enable AAC encoding via libfaac [no]
 217   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 218   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 219   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 220   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 221   --enable-libgme          enable Game Music Emu via libgme [no]
 222   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 223   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 224   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 225   --enable-libmfx          enable HW acceleration through libmfx
 226   --enable-libmodplug      enable ModPlug via libmodplug [no]
 227   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 228   --enable-libnut          enable NUT (de)muxing via libnut,
 229                            native (de)muxer exists [no]
 230   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 231   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 232   --enable-libopencv       enable video filtering via libopencv [no]
 233   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 234   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 235   --enable-libopus         enable Opus de/encoding via libopus [no]
 236   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 237   --enable-libquvi         enable quvi input via libquvi [no]
 238   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 239   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 240   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 241   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 242   --enable-libsnappy       enable Snappy compression [no]
 243   --enable-libsoxr         enable Include libsoxr resampling [no]
 244   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 245   --enable-libssh          enable SFTP protocol via libssh [no]
 246   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 247   --enable-libtheora       enable Theora encoding via libtheora [no]
 248   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 249   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 250   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 251   --enable-libvidstab      enable video stabilization using vid.stab [no]
 252   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 253   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 254   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 255                            native implementation exists [no]
 256   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 257   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 258   --enable-libwebp         enable WebP encoding via libwebp [no]
 259   --enable-libx264         enable H.264 encoding via x264 [no]
 260   --enable-libx265         enable HEVC encoding via x265 [no]
 261   --enable-libxavs         enable AVS encoding via xavs [no]
 262   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 263   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 264   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 265   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 266   --enable-libxvid         enable Xvid encoding via xvidcore,
 267                            native MPEG-4/Xvid encoder exists [no]
 268   --enable-libzmq          enable message passing via libzmq [no]
 269   --enable-libzvbi         enable teletext support via libzvbi [no]
 270   --disable-lzma           disable lzma [autodetect]
 271   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 272   --enable-mmal            enable decoding via MMAL [no]
 273   --enable-nvenc           enable NVIDIA NVENC support [no]
 274   --enable-openal          enable OpenAL 1.1 capture support [no]
 275   --enable-opencl          enable OpenCL code
 276   --enable-opengl          enable OpenGL rendering [no]
 277   --enable-openssl         enable openssl, needed for https support
 278                            if gnutls is not used [no]
 279   --disable-sdl            disable sdl [autodetect]
 280   --disable-securetransport disable Secure Transport, needed for TLS support
 281                            on OSX if openssl and gnutls are not used [autodetect]
 282   --enable-x11grab         enable X11 grabbing (legacy) [no]
 283   --disable-xlib           disable xlib [autodetect]
 284   --disable-zlib           disable zlib [autodetect]
 285
 286 Toolchain options:
 287   --arch=ARCH              select architecture [$arch]
 288   --cpu=CPU                select the minimum required CPU (affects
 289                            instruction selection, may crash on older CPUs)
 290   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 291   --progs-suffix=SUFFIX    program name suffix []
 292   --enable-cross-compile   assume a cross-compiler is used
 293   --sysroot=PATH           root of cross-build tree
 294   --sysinclude=PATH        location of cross-build system headers
 295   --target-os=OS           compiler targets OS [$target_os]
 296   --target-exec=CMD        command to run executables on target
 297   --target-path=DIR        path to view of build directory on target
 298   --target-samples=DIR     path to samples directory on target
 299   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 300   --toolchain=NAME         set tool defaults according to NAME
 301   --nm=NM                  use nm tool NM [$nm_default]
 302   --ar=AR                  use archive tool AR [$ar_default]
 303   --as=AS                  use assembler AS [$as_default]
 304   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 305   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 306   --cc=CC                  use C compiler CC [$cc_default]
 307   --cxx=CXX                use C compiler CXX [$cxx_default]
 308   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 309   --ld=LD                  use linker LD [$ld_default]
 310   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 311   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 312   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 313   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 314   --host-cc=HOSTCC         use host C compiler HOSTCC
 315   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 316   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 317   --host-ld=HOSTLD         use host linker HOSTLD
 318   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 319   --host-libs=HLIBS        use libs HLIBS when linking for host
 320   --host-os=OS             compiler host OS [$target_os]
 321   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 322   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 323   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 324   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 325   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 326   --extra-version=STRING   version string suffix []
 327   --optflags=OPTFLAGS      override optimization-related compiler flags
 328   --build-suffix=SUFFIX    library name suffix []
 329   --enable-pic             build position-independent code
 330   --enable-thumb           compile for Thumb instruction set
 331   --enable-lto             use link-time optimization
 332   --env="ENV=override"     override the environment variables
 333
 334 Advanced options (experts only):
 335   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 336   --disable-symver         disable symbol versioning
 337   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 338   --disable-safe-bitstream-reader
 339                            disable buffer boundary checking in bitreaders
 340                            (faster, but may crash)
 341   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 342   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 343
 344 Optimization options (experts only):
 345   --disable-asm            disable all assembly optimizations
 346   --disable-altivec        disable AltiVec optimizations
 347   --disable-vsx            disable VSX optimizations
 348   --disable-power8         disable POWER8 optimizations
 349   --disable-amd3dnow       disable 3DNow! optimizations
 350   --disable-amd3dnowext    disable 3DNow! extended optimizations
 351   --disable-mmx            disable MMX optimizations
 352   --disable-mmxext         disable MMXEXT optimizations
 353   --disable-sse            disable SSE optimizations
 354   --disable-sse2           disable SSE2 optimizations
 355   --disable-sse3           disable SSE3 optimizations
 356   --disable-ssse3          disable SSSE3 optimizations
 357   --disable-sse4           disable SSE4 optimizations
 358   --disable-sse42          disable SSE4.2 optimizations
 359   --disable-avx            disable AVX optimizations
 360   --disable-xop            disable XOP optimizations
 361   --disable-fma3           disable FMA3 optimizations
 362   --disable-fma4           disable FMA4 optimizations
 363   --disable-avx2           disable AVX2 optimizations
 364   --disable-armv5te        disable armv5te optimizations
 365   --disable-armv6          disable armv6 optimizations
 366   --disable-armv6t2        disable armv6t2 optimizations
 367   --disable-vfp            disable VFP optimizations
 368   --disable-neon           disable NEON optimizations
 369   --disable-inline-asm     disable use of inline assembly
 370   --disable-yasm           disable use of nasm/yasm assembly
 371   --disable-mips32r5       disable MIPS32R5 optimizations
 372   --disable-mips64r6       disable MIPS64R6 optimizations
 373   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 374   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 375   --disable-msa            disable MSA optimizations
 376   --disable-mipsfpu        disable floating point MIPS optimizations
 377   --disable-loongson3      disable Loongson-3 SIMD optimizations
 378   --disable-fast-unaligned consider unaligned accesses slow
 379
 380 Developer options (useful when working on FFmpeg itself):
 381   --disable-debug          disable debugging symbols
 382   --enable-debug=LEVEL     set the debug level [$debuglevel]
 383   --disable-optimizations  disable compiler optimizations
 384   --enable-extra-warnings  enable more compiler warnings
 385   --disable-stripping      disable stripping of executables and shared libraries
 386   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 387                            2 causes a slowdown at runtime.
 388   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 389   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 390                            leaks and errors, using the specified valgrind binary.
 391                            Cannot be combined with --target-exec
 392   --enable-ftrapv          Trap arithmetic overflows
 393   --samples=PATH           location of test samples for FATE, if not set use
 394                            \$FATE_SAMPLES at make invocation time.
 395   --enable-neon-clobber-test check NEON registers for clobbering (should be
 396                            used only for debugging purposes)
 397   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 398                            should be used only for debugging purposes)
 399   --enable-random          randomly enable/disable components
 400   --disable-random
 401   --enable-random=LIST     randomly enable/disable specific components or
 402   --disable-random=LIST    component groups. LIST is a comma-separated list
 403                            of NAME[:PROB] entries where NAME is a component
 404                            (group) and PROB the probability associated with
 405                            NAME (default 0.5).
 406   --random-seed=VALUE      seed value for --enable/disable-random
 407   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 408                            (only applies to --disable-optimizations builds)
 409
 410 NOTE: Object files are built at the place where configure is launched.
 411 EOF
 412   exit 0
 413 }
 414
 415 quotes='""'
 416
 417 log(){
 418     echo "$@" >> $logfile
 419 }
 420
 421 log_file(){
 422     log BEGIN $1
 423     pr -n -t $1 >> $logfile
 424     log END $1
 425 }
 426
 427 echolog(){
 428     log "$@"
 429     echo "$@"
 430 }
 431
 432 warn(){
 433     log "WARNING: $*"
 434     WARNINGS="${WARNINGS}WARNING: $*\n"
 435 }
 436
 437 die(){
 438     echolog "$@"
 439     cat <<EOF
 440
 441 If you think configure made a mistake, make sure you are using the latest
 442 version from Git.  If the latest version fails, report the problem to the
 443 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 444 EOF
 445     if disabled logging; then
 446         cat <<EOF
 447 Rerun configure with logging enabled (do not use --disable-logging), and
 448 include the log this produces with your report.
 449 EOF
 450     else
 451         cat <<EOF
 452 Include the log file "$logfile" produced by configure as this will help
 453 solve the problem.
 454 EOF
 455     fi
 456     exit 1
 457 }
 458
 459 # Avoid locale weirdness, besides we really just want to translate ASCII.
 460 toupper(){
 461     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 462 }
 463
 464 tolower(){
 465     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 466 }
 467
 468 c_escape(){
 469     echo "$*" | sed 's/["\\]/\\\0/g'
 470 }
 471
 472 sh_quote(){
 473     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 474     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 475     echo "$v"
 476 }
 477
 478 cleanws(){
 479     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 480 }
 481
 482 filter(){
 483     pat=$1
 484     shift
 485     for v; do
 486         eval "case $v in $pat) echo $v ;; esac"
 487     done
 488 }
 489
 490 filter_out(){
 491     pat=$1
 492     shift
 493     for v; do
 494         eval "case $v in $pat) ;; *) echo $v ;; esac"
 495     done
 496 }
 497
 498 map(){
 499     m=$1
 500     shift
 501     for v; do eval $m; done
 502 }
 503
 504 add_suffix(){
 505     suffix=$1
 506     shift
 507     for v; do echo ${v}${suffix}; done
 508 }
 509
 510 set_all(){
 511     value=$1
 512     shift
 513     for var in $*; do
 514         eval $var=$value
 515     done
 516 }
 517
 518 set_weak(){
 519     value=$1
 520     shift
 521     for var; do
 522         eval : \${$var:=$value}
 523     done
 524 }
 525
 526 sanitize_var_name(){
 527     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 528 }
 529
 530 set_safe(){
 531     var=$1
 532     shift
 533     eval $(sanitize_var_name "$var")='$*'
 534 }
 535
 536 get_safe(){
 537     eval echo \$$(sanitize_var_name "$1")
 538 }
 539
 540 pushvar(){
 541     for pvar in $*; do
 542         eval level=\${${pvar}_level:=0}
 543         eval ${pvar}_${level}="\$$pvar"
 544         eval ${pvar}_level=$(($level+1))
 545     done
 546 }
 547
 548 popvar(){
 549     for pvar in $*; do
 550         eval level=\${${pvar}_level:-0}
 551         test $level = 0 && continue
 552         eval level=$(($level-1))
 553         eval $pvar="\${${pvar}_${level}}"
 554         eval ${pvar}_level=$level
 555         eval unset ${pvar}_${level}
 556     done
 557 }
 558
 559 enable(){
 560     set_all yes $*
 561 }
 562
 563 disable(){
 564     set_all no $*
 565 }
 566
 567 enable_weak(){
 568     set_weak yes $*
 569 }
 570
 571 disable_weak(){
 572     set_weak no $*
 573 }
 574
 575 enable_safe(){
 576     for var; do
 577         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 578     done
 579 }
 580
 581 disable_safe(){
 582     for var; do
 583         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 584     done
 585 }
 586
 587 do_enable_deep(){
 588     for var; do
 589         enabled $var && continue
 590         eval sel="\$${var}_select"
 591         eval sgs="\$${var}_suggest"
 592         pushvar var sgs
 593         enable_deep $sel
 594         popvar sgs
 595         enable_deep_weak $sgs
 596         popvar var
 597     done
 598 }
 599
 600 enable_deep(){
 601     do_enable_deep $*
 602     enable $*
 603 }
 604
 605 enable_deep_weak(){
 606     for var; do
 607         disabled $var && continue
 608         pushvar var
 609         do_enable_deep $var
 610         popvar var
 611         enable_weak $var
 612     done
 613 }
 614
 615 enabled(){
 616     test "${1#!}" = "$1" && op== || op=!=
 617     eval test "x\$${1#!}" $op "xyes"
 618 }
 619
 620 disabled(){
 621     test "${1#!}" = "$1" && op== || op=!=
 622     eval test "x\$${1#!}" $op "xno"
 623 }
 624
 625 enabled_all(){
 626     for opt; do
 627         enabled $opt || return 1
 628     done
 629 }
 630
 631 disabled_all(){
 632     for opt; do
 633         disabled $opt || return 1
 634     done
 635 }
 636
 637 enabled_any(){
 638     for opt; do
 639         enabled $opt && return 0
 640     done
 641 }
 642
 643 disabled_any(){
 644     for opt; do
 645         disabled $opt && return 0
 646     done
 647     return 1
 648 }
 649
 650 set_default(){
 651     for opt; do
 652         eval : \${$opt:=\$${opt}_default}
 653     done
 654 }
 655
 656 is_in(){
 657     value=$1
 658     shift
 659     for var in $*; do
 660         [ $var = $value ] && return 0
 661     done
 662     return 1
 663 }
 664
 665 do_check_deps(){
 666     for cfg; do
 667         cfg="${cfg#!}"
 668         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 669         disabled ${cfg}_checking && continue
 670         enable ${cfg}_checking
 671         append allopts $cfg
 672
 673         eval dep_all="\$${cfg}_deps"
 674         eval dep_any="\$${cfg}_deps_any"
 675         eval dep_sel="\$${cfg}_select"
 676         eval dep_sgs="\$${cfg}_suggest"
 677         eval dep_ifa="\$${cfg}_if"
 678         eval dep_ifn="\$${cfg}_if_any"
 679
 680         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 681         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 682         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 683
 684         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 685         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 686         enabled_all  $dep_all || disable $cfg
 687         enabled_any  $dep_any || disable $cfg
 688         disabled_any $dep_sel && disable $cfg
 689
 690         if enabled $cfg; then
 691             enable_deep $dep_sel
 692             enable_deep_weak $dep_sgs
 693         fi
 694
 695         disable ${cfg}_checking
 696     done
 697 }
 698
 699 check_deps(){
 700     unset allopts
 701
 702     do_check_deps "$@"
 703
 704     for cfg in $allopts; do
 705         enabled $cfg || continue
 706         eval dep_extralibs="\$${cfg}_extralibs"
 707         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 708     done
 709 }
 710
 711 print_config(){
 712     pfx=$1
 713     files=$2
 714     shift 2
 715     map 'eval echo "$v \${$v:-no}"' "$@" |
 716     awk "BEGIN { split(\"$files\", files) }
 717         {
 718             c = \"$pfx\" toupper(\$1);
 719             v = \$2;
 720             sub(/yes/, 1, v);
 721             sub(/no/,  0, v);
 722             for (f in files) {
 723                 file = files[f];
 724                 if (file ~ /\\.h\$/) {
 725                     printf(\"#define %s %d\\n\", c, v) >>file;
 726                 } else if (file ~ /\\.asm\$/) {
 727                     printf(\"%%define %s %d\\n\", c, v) >>file;
 728                 } else if (file ~ /\\.mak\$/) {
 729                     n = -v ? \"\" : \"!\";
 730                     printf(\"%s%s=yes\\n\", n, c) >>file;
 731                 } else if (file ~ /\\.texi\$/) {
 732                     pre = -v ? \"\" : \"@c \";
 733                     yesno = \$2;
 734                     c2 = tolower(c);
 735                     gsub(/_/, \"-\", c2);
 736                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 737                 }
 738             }
 739         }"
 740 }
 741
 742 print_enabled(){
 743     suf=$1
 744     shift
 745     for v; do
 746         enabled $v && printf "%s\n" ${v%$suf};
 747     done
 748 }
 749
 750 append(){
 751     var=$1
 752     shift
 753     eval "$var=\"\$$var $*\""
 754 }
 755
 756 prepend(){
 757     var=$1
 758     shift
 759     eval "$var=\"$* \$$var\""
 760 }
 761
 762 unique(){
 763     var=$1
 764     uniq_list=""
 765     for tok in $(eval echo \$$var); do
 766         uniq_list="$(filter_out $tok $uniq_list) $tok"
 767     done
 768     eval "$var=\"${uniq_list}\""
 769 }
 770
 771 add_cppflags(){
 772     append CPPFLAGS "$@"
 773 }
 774
 775 add_cflags(){
 776     append CFLAGS $($cflags_filter "$@")
 777 }
 778
 779 add_cxxflags(){
 780     append CXXFLAGS $($cflags_filter "$@")
 781 }
 782
 783 add_asflags(){
 784     append ASFLAGS $($asflags_filter "$@")
 785 }
 786
 787 add_ldflags(){
 788     append LDFLAGS $($ldflags_filter "$@")
 789 }
 790
 791 add_ldexeflags(){
 792     append LDEXEFLAGS $($ldflags_filter "$@")
 793 }
 794
 795 add_stripflags(){
 796     append ASMSTRIPFLAGS "$@"
 797 }
 798
 799 add_extralibs(){
 800     prepend extralibs $($ldflags_filter "$@")
 801 }
 802
 803 add_host_cppflags(){
 804     append host_cppflags "$@"
 805 }
 806
 807 add_host_cflags(){
 808     append host_cflags $($host_cflags_filter "$@")
 809 }
 810
 811 add_host_ldflags(){
 812     append host_ldflags $($host_ldflags_filter "$@")
 813 }
 814
 815 add_compat(){
 816     append compat_objs $1
 817     shift
 818     map 'add_cppflags -D$v' "$@"
 819 }
 820
 821 check_cmd(){
 822     log "$@"
 823     "$@" >> $logfile 2>&1
 824 }
 825
 826 check_stat(){
 827     log check_stat "$@"
 828     stat "$1" >> $logfile 2>&1
 829 }
 830
 831 cc_o(){
 832     eval printf '%s\\n' $CC_O
 833 }
 834
 835 cc_e(){
 836     eval printf '%s\\n' $CC_E
 837 }
 838
 839 check_cc(){
 840     log check_cc "$@"
 841     cat > $TMPC
 842     log_file $TMPC
 843     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 844 }
 845
 846 check_cxx(){
 847     log check_cxx "$@"
 848     cat > $TMPCPP
 849     log_file $TMPCPP
 850     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 851 }
 852
 853 check_oc(){
 854     log check_oc "$@"
 855     cat > $TMPM
 856     log_file $TMPM
 857     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 858 }
 859
 860 check_cpp(){
 861     log check_cpp "$@"
 862     cat > $TMPC
 863     log_file $TMPC
 864     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 865 }
 866
 867 as_o(){
 868     eval printf '%s\\n' $AS_O
 869 }
 870
 871 check_as(){
 872     log check_as "$@"
 873     cat > $TMPS
 874     log_file $TMPS
 875     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 876 }
 877
 878 check_inline_asm(){
 879     log check_inline_asm "$@"
 880     name="$1"
 881     code="$2"
 882     shift 2
 883     disable $name
 884     check_cc "$@" <<EOF && enable $name
 885 void foo(void){ __asm__ volatile($code); }
 886 EOF
 887 }
 888
 889 check_insn(){
 890     log check_insn "$@"
 891     check_inline_asm ${1}_inline "\"$2\""
 892     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 893 }
 894
 895 check_yasm(){
 896     log check_yasm "$@"
 897     echo "$1" > $TMPS
 898     log_file $TMPS
 899     shift 1
 900     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 901 }
 902
 903 ld_o(){
 904     eval printf '%s\\n' $LD_O
 905 }
 906
 907 check_ld(){
 908     log check_ld "$@"
 909     type=$1
 910     shift 1
 911     flags=$(filter_out '-l*|*.so' $@)
 912     libs=$(filter '-l*|*.so' $@)
 913     check_$type $($cflags_filter $flags) || return
 914     flags=$($ldflags_filter $flags)
 915     libs=$($ldflags_filter $libs)
 916     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 917 }
 918
 919 print_include(){
 920     hdr=$1
 921     test "${hdr%.h}" = "${hdr}" &&
 922         echo "#include $hdr"    ||
 923         echo "#include <$hdr>"
 924 }
 925
 926 check_code(){
 927     log check_code "$@"
 928     check=$1
 929     headers=$2
 930     code=$3
 931     shift 3
 932     {
 933         for hdr in $headers; do
 934             print_include $hdr
 935         done
 936         echo "int main(void) { $code; return 0; }"
 937     } | check_$check "$@"
 938 }
 939
 940 check_cppflags(){
 941     log check_cppflags "$@"
 942     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 943 int x;
 944 EOF
 945 }
 946
 947 test_cflags(){
 948     log test_cflags "$@"
 949     set -- $($cflags_filter "$@")
 950     check_cc "$@" <<EOF
 951 int x;
 952 EOF
 953 }
 954
 955 check_cflags(){
 956     log check_cflags "$@"
 957     test_cflags "$@" && add_cflags "$@"
 958 }
 959
 960 check_cxxflags(){
 961     log check_cxxflags "$@"
 962     set -- $($cflags_filter "$@")
 963     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 964 int x;
 965 EOF
 966 }
 967
 968 test_ldflags(){
 969     log test_ldflags "$@"
 970     check_ld "cc" "$@" <<EOF
 971 int main(void){ return 0; }
 972 EOF
 973 }
 974
 975 check_ldflags(){
 976     log check_ldflags "$@"
 977     test_ldflags "$@" && add_ldflags "$@"
 978 }
 979
 980 test_stripflags(){
 981     log test_stripflags "$@"
 982     # call check_cc to get a fresh TMPO
 983     check_cc <<EOF
 984 int main(void) { return 0; }
 985 EOF
 986     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 987 }
 988
 989 check_stripflags(){
 990     log check_stripflags "$@"
 991     test_stripflags "$@" && add_stripflags "$@"
 992 }
 993
 994 check_header(){
 995     log check_header "$@"
 996     header=$1
 997     shift
 998     disable_safe $header
 999     check_cpp "$@" <<EOF && enable_safe $header
1000 #include <$header>
1001 int x;
1002 EOF
1003 }
1004
1005 check_header_oc(){
1006     log check_header_oc "$@"
1007     rm -f -- "$TMPO"
1008     header=$1
1009     shift
1010     disable_safe $header
1011     {
1012        echo "#include <$header>"
1013        echo "int main(void) { return 0; }"
1014     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1015 }
1016
1017 check_func(){
1018     log check_func "$@"
1019     func=$1
1020     shift
1021     disable $func
1022     check_ld "cc" "$@" <<EOF && enable $func
1023 extern int $func();
1024 int main(void){ $func(); }
1025 EOF
1026 }
1027
1028 check_mathfunc(){
1029     log check_mathfunc "$@"
1030     func=$1
1031     narg=$2
1032     shift 2
1033     test $narg = 2 && args="f, g" || args="f"
1034     disable $func
1035     check_ld "cc" "$@" <<EOF && enable $func
1036 #include <math.h>
1037 float foo(float f, float g) { return $func($args); }
1038 int main(void){ return (int) foo; }
1039 EOF
1040 }
1041
1042 check_func_headers(){
1043     log check_func_headers "$@"
1044     headers=$1
1045     funcs=$2
1046     shift 2
1047     {
1048         for hdr in $headers; do
1049             print_include $hdr
1050         done
1051         for func in $funcs; do
1052             echo "long check_$func(void) { return (long) $func; }"
1053         done
1054         echo "int main(void) { return 0; }"
1055     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1056 }
1057
1058 check_class_headers_cpp(){
1059     log check_class_headers_cpp "$@"
1060     headers=$1
1061     classes=$2
1062     shift 2
1063     {
1064         for hdr in $headers; do
1065             echo "#include <$hdr>"
1066         done
1067         echo "int main(void) { "
1068         i=1
1069         for class in $classes; do
1070             echo "$class obj$i;"
1071             i=$(expr $i + 1)
1072         done
1073         echo "return 0; }"
1074     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1075 }
1076
1077 check_cpp_condition(){
1078     log check_cpp_condition "$@"
1079     header=$1
1080     condition=$2
1081     shift 2
1082     check_cpp "$@" <<EOF
1083 #include <$header>
1084 #if !($condition)
1085 #error "unsatisfied condition: $condition"
1086 #endif
1087 EOF
1088 }
1089
1090 check_lib(){
1091     log check_lib "$@"
1092     header="$1"
1093     func="$2"
1094     shift 2
1095     check_header $header && check_func $func "$@" && add_extralibs "$@"
1096 }
1097
1098 check_lib2(){
1099     log check_lib2 "$@"
1100     headers="$1"
1101     funcs="$2"
1102     shift 2
1103     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1104 }
1105
1106 check_lib_cpp(){
1107     log check_lib_cpp "$@"
1108     headers="$1"
1109     classes="$2"
1110     shift 2
1111     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1112 }
1113
1114 check_pkg_config(){
1115     log check_pkg_config "$@"
1116     pkgandversion="$1"
1117     pkg="${1%% *}"
1118     headers="$2"
1119     funcs="$3"
1120     shift 3
1121     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1122     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1123     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1124     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1125         set_safe "${pkg}_cflags" $pkg_cflags   &&
1126         set_safe "${pkg}_libs"   $pkg_libs
1127 }
1128
1129 check_exec(){
1130     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1131 }
1132
1133 check_exec_crash(){
1134     code=$(cat)
1135
1136     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1137     # are safe but may not be available everywhere.  Thus we use
1138     # raise(SIGTERM) instead.  The check is run in a subshell so we
1139     # can redirect the "Terminated" message from the shell.  SIGBUS
1140     # is not defined by standard C so it is used conditionally.
1141
1142     (check_exec "$@") >> $logfile 2>&1 <<EOF
1143 #include <signal.h>
1144 static void sighandler(int sig){
1145     raise(SIGTERM);
1146 }
1147 int foo(void){
1148     $code
1149 }
1150 int (*func_ptr)(void) = foo;
1151 int main(void){
1152     signal(SIGILL, sighandler);
1153     signal(SIGFPE, sighandler);
1154     signal(SIGSEGV, sighandler);
1155 #ifdef SIGBUS
1156     signal(SIGBUS, sighandler);
1157 #endif
1158     return func_ptr();
1159 }
1160 EOF
1161 }
1162
1163 check_type(){
1164     log check_type "$@"
1165     headers=$1
1166     type=$2
1167     shift 2
1168     disable_safe "$type"
1169     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1170 }
1171
1172 check_struct(){
1173     log check_struct "$@"
1174     headers=$1
1175     struct=$2
1176     member=$3
1177     shift 3
1178     disable_safe "${struct}_${member}"
1179     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1180         enable_safe "${struct}_${member}"
1181 }
1182
1183 check_builtin(){
1184     log check_builtin "$@"
1185     name=$1
1186     headers=$2
1187     builtin=$3
1188     shift 3
1189     disable "$name"
1190     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1191 }
1192
1193 check_compile_assert(){
1194     log check_compile_assert "$@"
1195     name=$1
1196     headers=$2
1197     condition=$3
1198     shift 3
1199     disable "$name"
1200     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1201 }
1202
1203 require(){
1204     name="$1"
1205     header="$2"
1206     func="$3"
1207     shift 3
1208     check_lib $header $func "$@" || die "ERROR: $name not found"
1209 }
1210
1211 require2(){
1212     name="$1"
1213     headers="$2"
1214     func="$3"
1215     shift 3
1216     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1217 }
1218
1219 require_cpp(){
1220     name="$1"
1221     headers="$2"
1222     classes="$3"
1223     shift 3
1224     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1225 }
1226
1227 use_pkg_config(){
1228     pkg="$1"
1229     check_pkg_config "$@" || return 1
1230     add_cflags    $(get_safe "${pkg}_cflags")
1231     add_extralibs $(get_safe "${pkg}_libs")
1232 }
1233
1234 require_pkg_config(){
1235     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1236 }
1237
1238 require_libfreetype(){
1239     log require_libfreetype "$@"
1240     pkg="freetype2"
1241     check_cmd $pkg_config --exists --print-errors $pkg \
1242       || die "ERROR: $pkg not found"
1243     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1244     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1245     {
1246         echo "#include <ft2build.h>"
1247         echo "#include FT_FREETYPE_H"
1248         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1249         echo "int main(void) { return 0; }"
1250     } | check_ld "cc" $pkg_cflags $pkg_libs \
1251       && set_safe "${pkg}_cflags" $pkg_cflags \
1252       && set_safe "${pkg}_libs"   $pkg_libs \
1253       || die "ERROR: $pkg not found"
1254     add_cflags    $(get_safe "${pkg}_cflags")
1255     add_extralibs $(get_safe "${pkg}_libs")
1256 }
1257
1258 hostcc_e(){
1259     eval printf '%s\\n' $HOSTCC_E
1260 }
1261
1262 hostcc_o(){
1263     eval printf '%s\\n' $HOSTCC_O
1264 }
1265
1266 check_host_cc(){
1267     log check_host_cc "$@"
1268     cat > $TMPC
1269     log_file $TMPC
1270     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1271 }
1272
1273 check_host_cpp(){
1274     log check_host_cpp "$@"
1275     cat > $TMPC
1276     log_file $TMPC
1277     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1278 }
1279
1280 check_host_cppflags(){
1281     log check_host_cppflags "$@"
1282     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1283 int x;
1284 EOF
1285 }
1286
1287 check_host_cflags(){
1288     log check_host_cflags "$@"
1289     set -- $($host_cflags_filter "$@")
1290     check_host_cc "$@" <<EOF && append host_cflags "$@"
1291 int x;
1292 EOF
1293 }
1294
1295 check_host_cpp_condition(){
1296     log check_host_cpp_condition "$@"
1297     header=$1
1298     condition=$2
1299     shift 2
1300     check_host_cpp "$@" <<EOF
1301 #include <$header>
1302 #if !($condition)
1303 #error "unsatisfied condition: $condition"
1304 #endif
1305 EOF
1306 }
1307
1308 apply(){
1309     file=$1
1310     shift
1311     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1312 }
1313
1314 cp_if_changed(){
1315     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1316     mkdir -p "$(dirname $2)"
1317     $cp_f "$1" "$2"
1318 }
1319
1320 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1321 # system-dependent things.
1322
1323 COMPONENT_LIST="
1324     bsfs
1325     decoders
1326     demuxers
1327     encoders
1328     filters
1329     hwaccels
1330     indevs
1331     muxers
1332     outdevs
1333     parsers
1334     protocols
1335 "
1336
1337 EXAMPLE_LIST="
1338     avio_reading_example
1339     avio_list_dir_example
1340     decoding_encoding_example
1341     demuxing_decoding_example
1342     extract_mvs_example
1343     filter_audio_example
1344     filtering_audio_example
1345     filtering_video_example
1346     metadata_example
1347     muxing_example
1348     qsvdec_example
1349     remuxing_example
1350     resampling_audio_example
1351     scaling_video_example
1352     transcode_aac_example
1353     transcoding_example
1354 "
1355
1356 EXTERNAL_LIBRARY_LIST="
1357     avisynth
1358     bzlib
1359     crystalhd
1360     decklink
1361     frei0r
1362     gnutls
1363     iconv
1364     ladspa
1365     libaacplus
1366     libass
1367     libbluray
1368     libbs2b
1369     libcaca
1370     libcdio
1371     libcelt
1372     libdc1394
1373     libdcadec
1374     libfaac
1375     libfdk_aac
1376     libflite
1377     libfontconfig
1378     libfreetype
1379     libfribidi
1380     libgme
1381     libgsm
1382     libiec61883
1383     libilbc
1384     libmfx
1385     libmodplug
1386     libmp3lame
1387     libnut
1388     libopencore_amrnb
1389     libopencore_amrwb
1390     libopencv
1391     libopenh264
1392     libopenjpeg
1393     libopus
1394     libpulse
1395     libquvi
1396     librtmp
1397     libschroedinger
1398     libshine
1399     libsmbclient
1400     libsnappy
1401     libsoxr
1402     libspeex
1403     libssh
1404     libstagefright_h264
1405     libtheora
1406     libtwolame
1407     libutvideo
1408     libv4l2
1409     libvidstab
1410     libvo_aacenc
1411     libvo_amrwbenc
1412     libvorbis
1413     libvpx
1414     libwavpack
1415     libwebp
1416     libx264
1417     libx265
1418     libxavs
1419     libxcb
1420     libxcb_shm
1421     libxcb_shape
1422     libxcb_xfixes
1423     libxvid
1424     libzmq
1425     libzvbi
1426     lzma
1427     mmal
1428     nvenc
1429     openal
1430     opencl
1431     opengl
1432     openssl
1433     sdl
1434     securetransport
1435     x11grab
1436     xlib
1437     zlib
1438 "
1439
1440 DOCUMENT_LIST="
1441     doc
1442     htmlpages
1443     manpages
1444     podpages
1445     txtpages
1446 "
1447
1448 FEATURE_LIST="
1449     ftrapv
1450     gray
1451     hardcoded_tables
1452     runtime_cpudetect
1453     safe_bitstream_reader
1454     shared
1455     small
1456     static
1457     swscale_alpha
1458 "
1459
1460 HWACCEL_LIST="
1461     d3d11va
1462     dxva2
1463     vaapi
1464     vda
1465     vdpau
1466     xvmc
1467 "
1468
1469 LIBRARY_LIST="
1470     avcodec
1471     avdevice
1472     avfilter
1473     avformat
1474     avresample
1475     avutil
1476     postproc
1477     swresample
1478     swscale
1479 "
1480
1481 LICENSE_LIST="
1482     gpl
1483     nonfree
1484     version3
1485 "
1486
1487 PROGRAM_LIST="
1488     ffplay
1489     ffprobe
1490     ffserver
1491     ffmpeg
1492 "
1493
1494 SUBSYSTEM_LIST="
1495     dct
1496     dwt
1497     error_resilience
1498     faan
1499     fast_unaligned
1500     fft
1501     lsp
1502     lzo
1503     mdct
1504     pixelutils
1505     network
1506     rdft
1507 "
1508
1509 CONFIG_LIST="
1510     $COMPONENT_LIST
1511     $DOCUMENT_LIST
1512     $EXAMPLE_LIST
1513     $EXTERNAL_LIBRARY_LIST
1514     $FEATURE_LIST
1515     $HWACCEL_LIST
1516     $LICENSE_LIST
1517     $LIBRARY_LIST
1518     $PROGRAM_LIST
1519     $SUBSYSTEM_LIST
1520     fontconfig
1521     incompatible_libav_abi
1522     memalign_hack
1523     memory_poisoning
1524     neon_clobber_test
1525     pic
1526     pod2man
1527     raise_major
1528     thumb
1529     valgrind_backtrace
1530     xmm_clobber_test
1531 "
1532
1533 THREADS_LIST="
1534     pthreads
1535     os2threads
1536     w32threads
1537 "
1538
1539 ATOMICS_LIST="
1540     atomics_gcc
1541     atomics_suncc
1542     atomics_win32
1543 "
1544
1545 ARCH_LIST="
1546     aarch64
1547     alpha
1548     arm
1549     avr32
1550     avr32_ap
1551     avr32_uc
1552     bfin
1553     ia64
1554     m68k
1555     mips
1556     mips64
1557     parisc
1558     ppc
1559     ppc64
1560     s390
1561     sh4
1562     sparc
1563     sparc64
1564     tilegx
1565     tilepro
1566     tomi
1567     x86
1568     x86_32
1569     x86_64
1570 "
1571
1572 ARCH_EXT_LIST_ARM="
1573     armv5te
1574     armv6
1575     armv6t2
1576     armv8
1577     neon
1578     vfp
1579     vfpv3
1580     setend
1581 "
1582
1583 ARCH_EXT_LIST_MIPS="
1584     mipsfpu
1585     mips32r2
1586     mips32r5
1587     mips64r6
1588     mipsdspr1
1589     mipsdspr2
1590     msa
1591 "
1592
1593 ARCH_EXT_LIST_LOONGSON="
1594     loongson3
1595 "
1596
1597 ARCH_EXT_LIST_X86_SIMD="
1598     amd3dnow
1599     amd3dnowext
1600     avx
1601     avx2
1602     fma3
1603     fma4
1604     mmx
1605     mmxext
1606     sse
1607     sse2
1608     sse3
1609     sse4
1610     sse42
1611     ssse3
1612     xop
1613 "
1614
1615 ARCH_EXT_LIST_PPC="
1616     altivec
1617     dcbzl
1618     ldbrx
1619     power8
1620     ppc4xx
1621     vsx
1622 "
1623
1624 ARCH_EXT_LIST_X86="
1625     $ARCH_EXT_LIST_X86_SIMD
1626     cpunop
1627     i686
1628 "
1629
1630 ARCH_EXT_LIST="
1631     $ARCH_EXT_LIST_ARM
1632     $ARCH_EXT_LIST_PPC
1633     $ARCH_EXT_LIST_X86
1634     $ARCH_EXT_LIST_MIPS
1635     $ARCH_EXT_LIST_LOONGSON
1636 "
1637
1638 ARCH_FEATURES="
1639     aligned_stack
1640     fast_64bit
1641     fast_clz
1642     fast_cmov
1643     local_aligned_8
1644     local_aligned_16
1645     local_aligned_32
1646     simd_align_16
1647 "
1648
1649 BUILTIN_LIST="
1650     atomic_cas_ptr
1651     atomic_compare_exchange
1652     machine_rw_barrier
1653     MemoryBarrier
1654     mm_empty
1655     rdtsc
1656     sarestart
1657     sync_val_compare_and_swap
1658 "
1659 HAVE_LIST_CMDLINE="
1660     inline_asm
1661     symver
1662     yasm
1663 "
1664
1665 HAVE_LIST_PUB="
1666     bigendian
1667     fast_unaligned
1668     incompatible_libav_abi
1669 "
1670
1671 HEADERS_LIST="
1672     alsa_asoundlib_h
1673     altivec_h
1674     arpa_inet_h
1675     asm_types_h
1676     cdio_paranoia_h
1677     cdio_paranoia_paranoia_h
1678     dev_bktr_ioctl_bt848_h
1679     dev_bktr_ioctl_meteor_h
1680     dev_ic_bt8xx_h
1681     dev_video_bktr_ioctl_bt848_h
1682     dev_video_meteor_ioctl_meteor_h
1683     direct_h
1684     dlfcn_h
1685     d3d11_h
1686     dxva_h
1687     ES2_gl_h
1688     gsm_h
1689     io_h
1690     mach_mach_time_h
1691     machine_ioctl_bt848_h
1692     machine_ioctl_meteor_h
1693     malloc_h
1694     openjpeg_1_5_openjpeg_h
1695     OpenGL_gl3_h
1696     poll_h
1697     sndio_h
1698     soundcard_h
1699     sys_mman_h
1700     sys_param_h
1701     sys_resource_h
1702     sys_select_h
1703     sys_soundcard_h
1704     sys_time_h
1705     sys_un_h
1706     sys_videoio_h
1707     termios_h
1708     udplite_h
1709     unistd_h
1710     valgrind_valgrind_h
1711     windows_h
1712     winsock2_h
1713 "
1714
1715 INTRINSICS_LIST="
1716     intrinsics_neon
1717 "
1718
1719 MATH_FUNCS="
1720     atanf
1721     atan2f
1722     cbrt
1723     cbrtf
1724     cosf
1725     exp2
1726     exp2f
1727     expf
1728     isinf
1729     isnan
1730     ldexpf
1731     llrint
1732     llrintf
1733     log2
1734     log2f
1735     log10f
1736     lrint
1737     lrintf
1738     powf
1739     rint
1740     round
1741     roundf
1742     sinf
1743     trunc
1744     truncf
1745 "
1746
1747 SYSTEM_FUNCS="
1748     access
1749     aligned_malloc
1750     clock_gettime
1751     closesocket
1752     CommandLineToArgvW
1753     CoTaskMemFree
1754     CryptGenRandom
1755     dlopen
1756     fcntl
1757     flt_lim
1758     fork
1759     getaddrinfo
1760     gethrtime
1761     getopt
1762     GetProcessAffinityMask
1763     GetProcessMemoryInfo
1764     GetProcessTimes
1765     getrusage
1766     getservbyport
1767     GetSystemTimeAsFileTime
1768     gettimeofday
1769     glob
1770     glXGetProcAddress
1771     gmtime_r
1772     inet_aton
1773     isatty
1774     jack_port_get_latency_range
1775     kbhit
1776     localtime_r
1777     lzo1x_999_compress
1778     mach_absolute_time
1779     MapViewOfFile
1780     memalign
1781     mkstemp
1782     mmap
1783     mprotect
1784     nanosleep
1785     PeekNamedPipe
1786     posix_memalign
1787     pthread_cancel
1788     sched_getaffinity
1789     SetConsoleTextAttribute
1790     setmode
1791     setrlimit
1792     Sleep
1793     strerror_r
1794     sysconf
1795     sysctl
1796     usleep
1797     VirtualAlloc
1798     wglGetProcAddress
1799 "
1800
1801 TOOLCHAIN_FEATURES="
1802     as_dn_directive
1803     as_func
1804     as_object_arch
1805     asm_mod_q
1806     attribute_may_alias
1807     attribute_packed
1808     ebp_available
1809     ebx_available
1810     gnu_as
1811     gnu_windres
1812     ibm_asm
1813     inline_asm_labels
1814     inline_asm_nonlocal_labels
1815     inline_asm_direct_symbol_refs
1816     pragma_deprecated
1817     rsync_contimeout
1818     symver_asm_label
1819     symver_gnu_asm
1820     vfp_args
1821     xform_asm
1822     xmm_clobbers
1823 "
1824
1825 TYPES_LIST="
1826     CONDITION_VARIABLE_Ptr
1827     socklen_t
1828     struct_addrinfo
1829     struct_group_source_req
1830     struct_ip_mreq_source
1831     struct_ipv6_mreq
1832     struct_pollfd
1833     struct_rusage_ru_maxrss
1834     struct_sctp_event_subscribe
1835     struct_sockaddr_in6
1836     struct_sockaddr_sa_len
1837     struct_sockaddr_storage
1838     struct_stat_st_mtim_tv_nsec
1839     struct_v4l2_frmivalenum_discrete
1840 "
1841
1842 HAVE_LIST="
1843     $ARCH_EXT_LIST
1844     $(add_suffix _external $ARCH_EXT_LIST)
1845     $(add_suffix _inline   $ARCH_EXT_LIST)
1846     $ARCH_FEATURES
1847     $ATOMICS_LIST
1848     $BUILTIN_LIST
1849     $HAVE_LIST_CMDLINE
1850     $HAVE_LIST_PUB
1851     $HEADERS_LIST
1852     $INTRINSICS_LIST
1853     $MATH_FUNCS
1854     $SYSTEM_FUNCS
1855     $THREADS_LIST
1856     $TOOLCHAIN_FEATURES
1857     $TYPES_LIST
1858     atomics_native
1859     dos_paths
1860     dxva2api_cobj
1861     dxva2_lib
1862     libc_msvcrt
1863     libdc1394_1
1864     libdc1394_2
1865     makeinfo
1866     makeinfo_html
1867     perl
1868     pod2man
1869     sdl
1870     section_data_rel_ro
1871     texi2html
1872     threads
1873     vaapi_x11
1874     vdpau_x11
1875     xlib
1876 "
1877
1878 # options emitted with CONFIG_ prefix but not available on the command line
1879 CONFIG_EXTRA="
1880     aandcttables
1881     ac3dsp
1882     audio_frame_queue
1883     audiodsp
1884     blockdsp
1885     bswapdsp
1886     cabac
1887     dvprofile
1888     exif
1889     faandct
1890     faanidct
1891     fdctdsp
1892     fmtconvert
1893     frame_thread_encoder
1894     gcrypt
1895     gmp
1896     golomb
1897     gplv3
1898     h263dsp
1899     h264chroma
1900     h264dsp
1901     h264pred
1902     h264qpel
1903     hpeldsp
1904     huffman
1905     huffyuvdsp
1906     huffyuvencdsp
1907     idctdsp
1908     iirfilter
1909     imdct15
1910     intrax8
1911     jpegtables
1912     lgplv3
1913     llauddsp
1914     llviddsp
1915     lpc
1916     me_cmp
1917     mpeg_er
1918     mpegaudio
1919     mpegaudiodsp
1920     mpegvideo
1921     mpegvideoenc
1922     pixblockdsp
1923     qpeldsp
1924     qsv
1925     qsvdec
1926     qsvenc
1927     rangecoder
1928     riffdec
1929     riffenc
1930     rtpdec
1931     rtpenc_chain
1932     sinewin
1933     snappy
1934     startcode
1935     texturedsp
1936     texturedspenc
1937     tpeldsp
1938     videodsp
1939     vp3dsp
1940     wma_freqs
1941 "
1942
1943 CMDLINE_SELECT="
1944     $ARCH_EXT_LIST
1945     $CONFIG_LIST
1946     $HAVE_LIST_CMDLINE
1947     $THREADS_LIST
1948     asm
1949     cross_compile
1950     debug
1951     extra_warnings
1952     logging
1953     lto
1954     optimizations
1955     rpath
1956     stripping
1957 "
1958
1959 PATHS_LIST="
1960     bindir
1961     datadir
1962     docdir
1963     incdir
1964     libdir
1965     mandir
1966     pkgconfigdir
1967     prefix
1968     shlibdir
1969 "
1970
1971 CMDLINE_SET="
1972     $PATHS_LIST
1973     ar
1974     arch
1975     as
1976     assert_level
1977     build_suffix
1978     cc
1979     cpu
1980     cross_prefix
1981     cxx
1982     dep_cc
1983     doxygen
1984     env
1985     extra_version
1986     gas
1987     host_cc
1988     host_cflags
1989     host_ld
1990     host_ldflags
1991     host_libs
1992     host_os
1993     install
1994     ld
1995     logfile
1996     malloc_prefix
1997     nm
1998     optflags
1999     pkg_config
2000     pkg_config_flags
2001     progs_suffix
2002     random_seed
2003     ranlib
2004     samples
2005     strip
2006     sws_max_filter_size
2007     sysinclude
2008     sysroot
2009     target_exec
2010     target_os
2011     target_path
2012     target_samples
2013     tempprefix
2014     toolchain
2015     valgrind
2016     yasmexe
2017 "
2018
2019 CMDLINE_APPEND="
2020     extra_cflags
2021     extra_cxxflags
2022     host_cppflags
2023 "
2024
2025 # code dependency declarations
2026
2027 # architecture extensions
2028
2029 armv5te_deps="arm"
2030 armv6_deps="arm"
2031 armv6t2_deps="arm"
2032 armv8_deps="aarch64"
2033 neon_deps_any="aarch64 arm"
2034 intrinsics_neon_deps="neon"
2035 vfp_deps_any="aarch64 arm"
2036 vfpv3_deps="vfp"
2037 setend_deps="arm"
2038
2039 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2040
2041 mipsfpu_deps="mips"
2042 mipsdspr1_deps="mips"
2043 mipsdspr2_deps="mips"
2044 mips32r2_deps="mips"
2045 mips32r5_deps="mips"
2046 mips64r6_deps="mips"
2047 msa_deps="mips"
2048 loongson3_deps="mips"
2049
2050 altivec_deps="ppc"
2051 dcbzl_deps="ppc"
2052 ldbrx_deps="ppc"
2053 ppc4xx_deps="ppc"
2054 vsx_deps="altivec"
2055 power8_deps="vsx"
2056
2057 cpunop_deps="i686"
2058 x86_64_select="i686"
2059 x86_64_suggest="fast_cmov"
2060
2061 amd3dnow_deps="mmx"
2062 amd3dnowext_deps="amd3dnow"
2063 i686_deps="x86"
2064 mmx_deps="x86"
2065 mmxext_deps="mmx"
2066 sse_deps="mmxext"
2067 sse2_deps="sse"
2068 sse3_deps="sse2"
2069 ssse3_deps="sse3"
2070 sse4_deps="ssse3"
2071 sse42_deps="sse4"
2072 avx_deps="sse42"
2073 xop_deps="avx"
2074 fma3_deps="avx"
2075 fma4_deps="avx"
2076 avx2_deps="avx"
2077
2078 mmx_external_deps="yasm"
2079 mmx_inline_deps="inline_asm"
2080 mmx_suggest="mmx_external mmx_inline"
2081
2082 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2083     eval dep=\$${ext}_deps
2084     eval ${ext}_external_deps='"${dep}_external"'
2085     eval ${ext}_inline_deps='"${dep}_inline"'
2086     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2087 done
2088
2089 aligned_stack_if_any="aarch64 ppc x86"
2090 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2091 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2092 fast_unaligned_if_any="aarch64 ppc x86"
2093 simd_align_16_if_any="altivec neon sse"
2094
2095 # system capabilities
2096 symver_if_any="symver_asm_label symver_gnu_asm"
2097 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2098
2099 # threading support
2100 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2101 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2102 atomics_win32_if="MemoryBarrier"
2103 atomics_native_if_any="$ATOMICS_LIST"
2104 w32threads_deps="atomics_native"
2105 threads_if_any="$THREADS_LIST"
2106
2107 # subsystems
2108 dct_select="rdft"
2109 error_resilience_select="me_cmp"
2110 faandct_deps="faan fdctdsp"
2111 faanidct_deps="faan idctdsp"
2112 frame_thread_encoder_deps="encoders threads"
2113 intrax8_select="error_resilience"
2114 mdct_select="fft"
2115 rdft_select="fft"
2116 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2117 mpeg_er_select="error_resilience"
2118 mpegaudio_select="mpegaudiodsp"
2119 mpegaudiodsp_select="dct"
2120 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2121 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2122 qsvdec_select="qsv"
2123 qsvenc_select="qsv"
2124
2125 # decoders / encoders
2126 aac_decoder_select="imdct15 mdct sinewin"
2127 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2128 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2129 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2130 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2131 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2132 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2133 aic_decoder_select="golomb idctdsp"
2134 alac_encoder_select="lpc"
2135 als_decoder_select="bswapdsp"
2136 amrnb_decoder_select="lsp"
2137 amrwb_decoder_select="lsp"
2138 amv_decoder_select="sp5x_decoder exif"
2139 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2140 ape_decoder_select="bswapdsp llauddsp"
2141 apng_decoder_select="zlib"
2142 apng_encoder_select="huffyuvencdsp zlib"
2143 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2144 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2145 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2146 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2147 atrac1_decoder_select="mdct sinewin"
2148 atrac3_decoder_select="mdct"
2149 atrac3p_decoder_select="mdct sinewin"
2150 avrn_decoder_select="exif jpegtables"
2151 bink_decoder_select="blockdsp hpeldsp"
2152 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2153 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2154 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2155 cllc_decoder_select="bswapdsp"
2156 comfortnoise_encoder_select="lpc"
2157 cook_decoder_select="audiodsp mdct sinewin"
2158 cscd_decoder_select="lzo"
2159 cscd_decoder_suggest="zlib"
2160 dca_decoder_select="fmtconvert mdct"
2161 dds_decoder_select="texturedsp"
2162 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2163 dnxhd_decoder_select="blockdsp idctdsp"
2164 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2165 dvvideo_decoder_select="dvprofile idctdsp"
2166 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2167 dxa_decoder_select="zlib"
2168 eac3_decoder_select="ac3_decoder"
2169 eac3_encoder_select="ac3_encoder"
2170 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2171 eatgq_decoder_select="aandcttables"
2172 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2173 exr_decoder_select="zlib"
2174 ffv1_decoder_select="golomb rangecoder"
2175 ffv1_encoder_select="rangecoder"
2176 ffvhuff_decoder_select="huffyuv_decoder"
2177 ffvhuff_encoder_select="huffyuv_encoder"
2178 fic_decoder_select="golomb"
2179 flac_decoder_select="golomb"
2180 flac_encoder_select="bswapdsp golomb lpc"
2181 flashsv_decoder_select="zlib"
2182 flashsv_encoder_select="zlib"
2183 flashsv2_encoder_select="zlib"
2184 flashsv2_decoder_select="zlib"
2185 flv_decoder_select="h263_decoder"
2186 flv_encoder_select="h263_encoder"
2187 fourxm_decoder_select="blockdsp bswapdsp"
2188 fraps_decoder_select="bswapdsp huffman"
2189 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2190 g729_decoder_select="audiodsp"
2191 h261_decoder_select="mpeg_er mpegvideo"
2192 h261_encoder_select="aandcttables mpegvideoenc"
2193 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2194 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2195 h263i_decoder_select="h263_decoder"
2196 h263p_decoder_select="h263_decoder"
2197 h263p_encoder_select="h263_encoder"
2198 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2199 h264_decoder_suggest="error_resilience"
2200 h264_qsv_decoder_deps="libmfx"
2201 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2202 h264_qsv_encoder_deps="libmfx"
2203 h264_qsv_encoder_select="qsvenc"
2204 hap_decoder_select="snappy texturedsp"
2205 hap_encoder_deps="libsnappy"
2206 hap_encoder_select="texturedspenc"
2207 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2208 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2209 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2210 iac_decoder_select="imc_decoder"
2211 imc_decoder_select="bswapdsp fft mdct sinewin"
2212 indeo3_decoder_select="hpeldsp"
2213 interplay_video_decoder_select="hpeldsp"
2214 jpegls_decoder_select="golomb mjpeg_decoder"
2215 jpegls_encoder_select="golomb"
2216 jv_decoder_select="blockdsp"
2217 lagarith_decoder_select="huffyuvdsp"
2218 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2219 loco_decoder_select="golomb"
2220 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2221 metasound_decoder_select="lsp mdct sinewin"
2222 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2223 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2224 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2225 mjpegb_decoder_select="mjpeg_decoder"
2226 mlp_decoder_select="mlp_parser"
2227 motionpixels_decoder_select="bswapdsp"
2228 mp1_decoder_select="mpegaudio"
2229 mp1float_decoder_select="mpegaudio"
2230 mp2_decoder_select="mpegaudio"
2231 mp2float_decoder_select="mpegaudio"
2232 mp3_decoder_select="mpegaudio"
2233 mp3adu_decoder_select="mpegaudio"
2234 mp3adufloat_decoder_select="mpegaudio"
2235 mp3float_decoder_select="mpegaudio"
2236 mp3on4_decoder_select="mpegaudio"
2237 mp3on4float_decoder_select="mpegaudio"
2238 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2239 mpc8_decoder_select="mpegaudiodsp"
2240 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2241 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2242 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2243 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2244 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2245 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2246 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2247 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2248 mpeg4_encoder_select="h263_encoder"
2249 msmpeg4v1_decoder_select="h263_decoder"
2250 msmpeg4v2_decoder_select="h263_decoder"
2251 msmpeg4v2_encoder_select="h263_encoder"
2252 msmpeg4v3_decoder_select="h263_decoder"
2253 msmpeg4v3_encoder_select="h263_encoder"
2254 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2255 mxpeg_decoder_select="mjpeg_decoder"
2256 nellymoser_decoder_select="mdct sinewin"
2257 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2258 nuv_decoder_select="idctdsp lzo"
2259 on2avc_decoder_select="mdct"
2260 opus_decoder_deps="swresample"
2261 opus_decoder_select="imdct15"
2262 png_decoder_select="zlib"
2263 png_encoder_select="huffyuvencdsp zlib"
2264 prores_decoder_select="blockdsp idctdsp"
2265 prores_encoder_select="fdctdsp"
2266 qcelp_decoder_select="lsp"
2267 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2268 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2269 ra_144_decoder_select="audiodsp"
2270 ralf_decoder_select="golomb"
2271 rawvideo_decoder_select="bswapdsp"
2272 rtjpeg_decoder_select="me_cmp"
2273 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2274 rv10_encoder_select="h263_encoder"
2275 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2276 rv20_encoder_select="h263_encoder"
2277 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2278 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2279 shorten_decoder_select="golomb"
2280 sipr_decoder_select="lsp"
2281 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2282 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2283 sonic_decoder_select="golomb rangecoder"
2284 sonic_encoder_select="golomb rangecoder"
2285 sonic_ls_encoder_select="golomb rangecoder"
2286 sp5x_decoder_select="mjpeg_decoder"
2287 svq1_decoder_select="hpeldsp"
2288 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2289 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2290 svq3_decoder_suggest="zlib"
2291 tak_decoder_select="audiodsp"
2292 tdsc_decoder_select="zlib mjpeg_decoder"
2293 theora_decoder_select="vp3_decoder"
2294 thp_decoder_select="mjpeg_decoder"
2295 tiff_decoder_suggest="zlib lzma"
2296 tiff_encoder_suggest="zlib"
2297 truehd_decoder_select="mlp_parser"
2298 truemotion2_decoder_select="bswapdsp"
2299 truespeech_decoder_select="bswapdsp"
2300 tscc_decoder_select="zlib"
2301 twinvq_decoder_select="mdct lsp sinewin"
2302 txd_decoder_select="texturedsp"
2303 utvideo_decoder_select="bswapdsp"
2304 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2305 vble_decoder_select="huffyuvdsp"
2306 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2307 vc1image_decoder_select="vc1_decoder"
2308 vorbis_decoder_select="mdct"
2309 vorbis_encoder_select="mdct"
2310 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2311 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2312 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2313 vp6a_decoder_select="vp6_decoder"
2314 vp6f_decoder_select="vp6_decoder"
2315 vp7_decoder_select="h264pred videodsp"
2316 vp8_decoder_select="h264pred videodsp"
2317 vp9_decoder_select="videodsp vp9_parser"
2318 webp_decoder_select="vp8_decoder"
2319 wmalossless_decoder_select="llauddsp"
2320 wmapro_decoder_select="mdct sinewin wma_freqs"
2321 wmav1_decoder_select="mdct sinewin wma_freqs"
2322 wmav1_encoder_select="mdct sinewin wma_freqs"
2323 wmav2_decoder_select="mdct sinewin wma_freqs"
2324 wmav2_encoder_select="mdct sinewin wma_freqs"
2325 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2326 wmv1_decoder_select="h263_decoder"
2327 wmv1_encoder_select="h263_encoder"
2328 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2329 wmv2_encoder_select="h263_encoder"
2330 wmv3_decoder_select="vc1_decoder"
2331 wmv3image_decoder_select="wmv3_decoder"
2332 zerocodec_decoder_select="zlib"
2333 zlib_decoder_select="zlib"
2334 zlib_encoder_select="zlib"
2335 zmbv_decoder_select="zlib"
2336 zmbv_encoder_select="zlib"
2337
2338 # hardware accelerators
2339 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2340 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2341 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2342 vaapi_deps="va_va_h"
2343 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2344 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2345 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2346 xvmc_deps="X11_extensions_XvMClib_h"
2347
2348 h263_vaapi_hwaccel_deps="vaapi"
2349 h263_vaapi_hwaccel_select="h263_decoder"
2350 h263_vdpau_hwaccel_deps="vdpau"
2351 h263_vdpau_hwaccel_select="h263_decoder"
2352 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2353 h264_d3d11va_hwaccel_deps="d3d11va"
2354 h264_d3d11va_hwaccel_select="h264_decoder"
2355 h264_dxva2_hwaccel_deps="dxva2"
2356 h264_dxva2_hwaccel_select="h264_decoder"
2357 h264_mmal_decoder_deps="mmal"
2358 h264_mmal_hwaccel_deps="mmal"
2359 h264_mmal_decoder_select="h264_decoder"
2360 h264_mmal_encoder_deps="mmal"
2361 h264_qsv_hwaccel_deps="libmfx"
2362 h264_vaapi_hwaccel_deps="vaapi"
2363 h264_vaapi_hwaccel_select="h264_decoder"
2364 h264_vda_decoder_deps="vda"
2365 h264_vda_decoder_select="h264_decoder"
2366 h264_vda_hwaccel_deps="vda"
2367 h264_vda_hwaccel_select="h264_decoder"
2368 h264_vda_old_hwaccel_deps="vda"
2369 h264_vda_old_hwaccel_select="h264_decoder"
2370 h264_vdpau_decoder_deps="vdpau"
2371 h264_vdpau_decoder_select="h264_decoder"
2372 h264_vdpau_hwaccel_deps="vdpau"
2373 h264_vdpau_hwaccel_select="h264_decoder"
2374 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2375 hevc_d3d11va_hwaccel_select="hevc_decoder"
2376 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2377 hevc_dxva2_hwaccel_select="hevc_decoder"
2378 mpeg_vdpau_decoder_deps="vdpau"
2379 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2380 mpeg_xvmc_hwaccel_deps="xvmc"
2381 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2382 mpeg1_vdpau_decoder_deps="vdpau"
2383 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2384 mpeg1_vdpau_hwaccel_deps="vdpau"
2385 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2386 mpeg1_xvmc_hwaccel_deps="xvmc"
2387 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2388 mpeg2_crystalhd_decoder_select="crystalhd"
2389 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2390 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2391 mpeg2_dxva2_hwaccel_deps="dxva2"
2392 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2393 mpeg2_vaapi_hwaccel_deps="vaapi"
2394 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2395 mpeg2_vdpau_hwaccel_deps="vdpau"
2396 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2397 mpeg2_xvmc_hwaccel_deps="xvmc"
2398 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2399 mpeg4_crystalhd_decoder_select="crystalhd"
2400 mpeg4_vaapi_hwaccel_deps="vaapi"
2401 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2402 mpeg4_vdpau_decoder_deps="vdpau"
2403 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2404 mpeg4_vdpau_hwaccel_deps="vdpau"
2405 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2406 msmpeg4_crystalhd_decoder_select="crystalhd"
2407 vc1_crystalhd_decoder_select="crystalhd"
2408 vc1_d3d11va_hwaccel_deps="d3d11va"
2409 vc1_d3d11va_hwaccel_select="vc1_decoder"
2410 vc1_dxva2_hwaccel_deps="dxva2"
2411 vc1_dxva2_hwaccel_select="vc1_decoder"
2412 vc1_vaapi_hwaccel_deps="vaapi"
2413 vc1_vaapi_hwaccel_select="vc1_decoder"
2414 vc1_vdpau_decoder_deps="vdpau"
2415 vc1_vdpau_decoder_select="vc1_decoder"
2416 vc1_vdpau_hwaccel_deps="vdpau"
2417 vc1_vdpau_hwaccel_select="vc1_decoder"
2418 wmv3_crystalhd_decoder_select="crystalhd"
2419 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2420 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2421 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2422 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2423 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2424
2425 # parsers
2426 h264_parser_select="h264_decoder"
2427 hevc_parser_select="hevc_decoder"
2428 mpegvideo_parser_select="mpegvideo"
2429 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2430 vc1_parser_select="mpegvideo startcode vc1_decoder"
2431
2432 # bitstream_filters
2433 mjpeg2jpeg_bsf_select="jpegtables"
2434
2435 # external libraries
2436 libaacplus_encoder_deps="libaacplus"
2437 libcelt_decoder_deps="libcelt"
2438 libdcadec_decoder_deps="libdcadec"
2439 libfaac_encoder_deps="libfaac"
2440 libfaac_encoder_select="audio_frame_queue"
2441 libfdk_aac_decoder_deps="libfdk_aac"
2442 libfdk_aac_encoder_deps="libfdk_aac"
2443 libfdk_aac_encoder_select="audio_frame_queue"
2444 libgme_demuxer_deps="libgme"
2445 libgsm_decoder_deps="libgsm"
2446 libgsm_encoder_deps="libgsm"
2447 libgsm_ms_decoder_deps="libgsm"
2448 libgsm_ms_encoder_deps="libgsm"
2449 libilbc_decoder_deps="libilbc"
2450 libilbc_encoder_deps="libilbc"
2451 libmodplug_demuxer_deps="libmodplug"
2452 libmp3lame_encoder_deps="libmp3lame"
2453 libmp3lame_encoder_select="audio_frame_queue"
2454 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2455 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2456 libopencore_amrnb_encoder_select="audio_frame_queue"
2457 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2458 libopenh264_encoder_deps="libopenh264"
2459 libopenjpeg_decoder_deps="libopenjpeg"
2460 libopenjpeg_encoder_deps="libopenjpeg"
2461 libopus_decoder_deps="libopus"
2462 libopus_encoder_deps="libopus"
2463 libopus_encoder_select="audio_frame_queue"
2464 libquvi_demuxer_deps="libquvi"
2465 libschroedinger_decoder_deps="libschroedinger"
2466 libschroedinger_encoder_deps="libschroedinger"
2467 libshine_encoder_deps="libshine"
2468 libshine_encoder_select="audio_frame_queue"
2469 libspeex_decoder_deps="libspeex"
2470 libspeex_encoder_deps="libspeex"
2471 libspeex_encoder_select="audio_frame_queue"
2472 libstagefright_h264_decoder_deps="libstagefright_h264"
2473 libtheora_encoder_deps="libtheora"
2474 libtwolame_encoder_deps="libtwolame"
2475 libvo_aacenc_encoder_deps="libvo_aacenc"
2476 libvo_aacenc_encoder_select="audio_frame_queue"
2477 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2478 libvorbis_decoder_deps="libvorbis"
2479 libvorbis_encoder_deps="libvorbis"
2480 libvorbis_encoder_select="audio_frame_queue"
2481 libvpx_vp8_decoder_deps="libvpx"
2482 libvpx_vp8_encoder_deps="libvpx"
2483 libvpx_vp9_decoder_deps="libvpx"
2484 libvpx_vp9_encoder_deps="libvpx"
2485 libwavpack_encoder_deps="libwavpack"
2486 libwebp_encoder_deps="libwebp"
2487 libwebp_anim_encoder_deps="libwebp"
2488 libx264_encoder_deps="libx264"
2489 libx264rgb_encoder_deps="libx264"
2490 libx264rgb_encoder_select="libx264_encoder"
2491 libx265_encoder_deps="libx265"
2492 libxavs_encoder_deps="libxavs"
2493 libxvid_encoder_deps="libxvid"
2494 libutvideo_decoder_deps="libutvideo"
2495 libutvideo_encoder_deps="libutvideo"
2496 libzvbi_teletext_decoder_deps="libzvbi"
2497 nvenc_encoder_deps="nvenc"
2498 nvenc_h264_encoder_deps="nvenc"
2499 nvenc_hevc_encoder_deps="nvenc"
2500
2501 # demuxers / muxers
2502 ac3_demuxer_select="ac3_parser"
2503 asf_demuxer_select="riffdec"
2504 asf_muxer_select="riffenc"
2505 asf_stream_muxer_select="asf_muxer"
2506 avi_demuxer_select="riffdec exif"
2507 avi_muxer_select="riffenc"
2508 avisynth_demuxer_deps="avisynth"
2509 avisynth_demuxer_select="riffdec"
2510 caf_demuxer_select="riffdec"
2511 dash_muxer_select="mp4_muxer"
2512 dirac_demuxer_select="dirac_parser"
2513 dts_demuxer_select="dca_parser"
2514 dtshd_demuxer_select="dca_parser"
2515 dv_demuxer_select="dvprofile"
2516 dv_muxer_select="dvprofile"
2517 dxa_demuxer_select="riffdec"
2518 eac3_demuxer_select="ac3_parser"
2519 f4v_muxer_select="mov_muxer"
2520 flac_demuxer_select="flac_parser"
2521 hds_muxer_select="flv_muxer"
2522 hls_muxer_select="mpegts_muxer"
2523 image2_alias_pix_demuxer_select="image2_demuxer"
2524 image2_brender_pix_demuxer_select="image2_demuxer"
2525 ipod_muxer_select="mov_muxer"
2526 ismv_muxer_select="mov_muxer"
2527 libnut_demuxer_deps="libnut"
2528 libnut_muxer_deps="libnut"
2529 matroska_audio_muxer_select="matroska_muxer"
2530 matroska_demuxer_select="riffdec"
2531 matroska_demuxer_suggest="bzlib lzo zlib"
2532 matroska_muxer_select="riffenc"
2533 mmf_muxer_select="riffenc"
2534 mov_demuxer_select="riffdec"
2535 mov_demuxer_suggest="zlib"
2536 mov_muxer_select="riffenc rtpenc_chain"
2537 mp3_demuxer_select="mpegaudio_parser"
2538 mp4_muxer_select="mov_muxer"
2539 mpegts_muxer_select="adts_muxer latm_muxer"
2540 mpegtsraw_demuxer_select="mpegts_demuxer"
2541 mxf_d10_muxer_select="mxf_muxer"
2542 mxf_opatom_muxer_select="mxf_muxer"
2543 nut_muxer_select="riffenc"
2544 nuv_demuxer_select="riffdec"
2545 oga_muxer_select="ogg_muxer"
2546 ogg_demuxer_select="golomb"
2547 opus_muxer_select="ogg_muxer"
2548 psp_muxer_select="mov_muxer"
2549 rtp_demuxer_select="sdp_demuxer"
2550 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2551 rtsp_demuxer_select="http_protocol rtpdec"
2552 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2553 sap_demuxer_select="sdp_demuxer"
2554 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2555 sdp_demuxer_select="rtpdec"
2556 smoothstreaming_muxer_select="ismv_muxer"
2557 spdif_muxer_select="aac_parser"
2558 spx_muxer_select="ogg_muxer"
2559 tak_demuxer_select="tak_parser"
2560 tg2_muxer_select="mov_muxer"
2561 tgp_muxer_select="mov_muxer"
2562 vobsub_demuxer_select="mpegps_demuxer"
2563 w64_demuxer_select="wav_demuxer"
2564 w64_muxer_select="wav_muxer"
2565 wav_demuxer_select="riffdec"
2566 wav_muxer_select="riffenc"
2567 webm_muxer_select="riffenc"
2568 wtv_demuxer_select="riffdec"
2569 wtv_muxer_select="riffenc"
2570 xmv_demuxer_select="riffdec"
2571 xwma_demuxer_select="riffdec"
2572
2573 # indevs / outdevs
2574 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2575 alsa_outdev_deps="alsa_asoundlib_h"
2576 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2577 avfoundation_indev_select="avfoundation"
2578 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2579 caca_outdev_deps="libcaca"
2580 decklink_outdev_deps="decklink pthreads"
2581 decklink_outdev_extralibs="-lstdc++"
2582 decklink_indev_deps="decklink pthreads"
2583 decklink_indev_extralibs="-lstdc++"
2584 dshow_indev_deps="IBaseFilter"
2585 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2586 dv1394_indev_deps="dv1394"
2587 dv1394_indev_select="dv_demuxer"
2588 fbdev_indev_deps="linux_fb_h"
2589 fbdev_outdev_deps="linux_fb_h"
2590 gdigrab_indev_deps="CreateDIBSection"
2591 gdigrab_indev_extralibs="-lgdi32"
2592 gdigrab_indev_select="bmp_decoder"
2593 iec61883_indev_deps="libiec61883"
2594 jack_indev_deps="jack_jack_h sem_timedwait"
2595 lavfi_indev_deps="avfilter"
2596 libcdio_indev_deps="libcdio"
2597 libdc1394_indev_deps="libdc1394"
2598 libv4l2_indev_deps="libv4l2"
2599 openal_indev_deps="openal"
2600 opengl_outdev_deps="opengl"
2601 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2602 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2603 pulse_indev_deps="libpulse"
2604 pulse_outdev_deps="libpulse"
2605 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2606 qtkit_indev_select="qtkit"
2607 sdl_outdev_deps="sdl"
2608 sndio_indev_deps="sndio_h"
2609 sndio_outdev_deps="sndio_h"
2610 v4l_indev_deps="linux_videodev_h"
2611 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2612 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2613 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2614 vfwcap_indev_extralibs="-lavicap32"
2615 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2616 xv_outdev_extralibs="-lXv -lX11 -lXext"
2617 x11grab_indev_deps="x11grab"
2618 x11grab_xcb_indev_deps="libxcb"
2619
2620 # protocols
2621 bluray_protocol_deps="libbluray"
2622 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2623 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2624 ffrtmpcrypt_protocol_select="tcp_protocol"
2625 ffrtmphttp_protocol_deps="!librtmp_protocol"
2626 ffrtmphttp_protocol_select="http_protocol"
2627 ftp_protocol_select="tcp_protocol"
2628 gopher_protocol_select="network"
2629 http_protocol_select="tcp_protocol"
2630 httpproxy_protocol_select="tcp_protocol"
2631 https_protocol_select="tls_protocol"
2632 icecast_protocol_select="http_protocol"
2633 librtmp_protocol_deps="librtmp"
2634 librtmpe_protocol_deps="librtmp"
2635 librtmps_protocol_deps="librtmp"
2636 librtmpt_protocol_deps="librtmp"
2637 librtmpte_protocol_deps="librtmp"
2638 libsmbclient_protocol_deps="libsmbclient gplv3"
2639 libssh_protocol_deps="libssh"
2640 mmsh_protocol_select="http_protocol"
2641 mmst_protocol_select="network"
2642 rtmp_protocol_deps="!librtmp_protocol"
2643 rtmp_protocol_select="tcp_protocol"
2644 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2645 rtmps_protocol_deps="!librtmp_protocol"
2646 rtmps_protocol_select="tls_protocol"
2647 rtmpt_protocol_select="ffrtmphttp_protocol"
2648 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2649 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2650 rtp_protocol_select="udp_protocol"
2651 sctp_protocol_deps="struct_sctp_event_subscribe"
2652 sctp_protocol_select="network"
2653 srtp_protocol_select="rtp_protocol"
2654 tcp_protocol_select="network"
2655 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2656 tls_gnutls_protocol_select="tcp_protocol"
2657 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2658 tls_openssl_protocol_select="tcp_protocol"
2659 tls_securetransport_protocol_deps="securetransport"
2660 tls_securetransport_protocol_select="tcp_protocol"
2661 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2662 udp_protocol_select="network"
2663 udplite_protocol_select="network"
2664 unix_protocol_deps="sys_un_h"
2665 unix_protocol_select="network"
2666
2667 # filters
2668 amovie_filter_deps="avcodec avformat"
2669 aresample_filter_deps="swresample"
2670 ass_filter_deps="libass"
2671 asyncts_filter_deps="avresample"
2672 atempo_filter_deps="avcodec"
2673 atempo_filter_select="rdft"
2674 azmq_filter_deps="libzmq"
2675 blackframe_filter_deps="gpl"
2676 boxblur_filter_deps="gpl"
2677 bs2b_filter_deps="libbs2b"
2678 colormatrix_filter_deps="gpl"
2679 cover_rect_filter_deps="avcodec avformat gpl"
2680 cropdetect_filter_deps="gpl"
2681 delogo_filter_deps="gpl"
2682 deshake_filter_select="pixelutils"
2683 drawtext_filter_deps="libfreetype"
2684 ebur128_filter_deps="gpl"
2685 eq_filter_deps="gpl"
2686 fftfilt_filter_deps="avcodec"
2687 fftfilt_filter_select="rdft"
2688 flite_filter_deps="libflite"
2689 find_rect_filter_deps="avcodec avformat gpl"
2690 frei0r_filter_deps="frei0r dlopen"
2691 frei0r_src_filter_deps="frei0r dlopen"
2692 fspp_filter_deps="gpl"
2693 geq_filter_deps="gpl"
2694 histeq_filter_deps="gpl"
2695 hqdn3d_filter_deps="gpl"
2696 interlace_filter_deps="gpl"
2697 kerndeint_filter_deps="gpl"
2698 ladspa_filter_deps="ladspa dlopen"
2699 mcdeint_filter_deps="avcodec gpl"
2700 movie_filter_deps="avcodec avformat"
2701 mpdecimate_filter_deps="gpl"
2702 mpdecimate_filter_select="pixelutils"
2703 mptestsrc_filter_deps="gpl"
2704 negate_filter_deps="lut_filter"
2705 perspective_filter_deps="gpl"
2706 pp7_filter_deps="gpl"
2707 ocv_filter_deps="libopencv"
2708 owdenoise_filter_deps="gpl"
2709 pan_filter_deps="swresample"
2710 phase_filter_deps="gpl"
2711 pp_filter_deps="gpl postproc"
2712 pullup_filter_deps="gpl"
2713 removelogo_filter_deps="avcodec avformat swscale"
2714 repeatfields_filter_deps="gpl"
2715 resample_filter_deps="avresample"
2716 sab_filter_deps="gpl swscale"
2717 scale_filter_deps="swscale"
2718 select_filter_select="pixelutils"
2719 smartblur_filter_deps="gpl swscale"
2720 showcqt_filter_deps="avcodec"
2721 showcqt_filter_select="fft"
2722 showspectrum_filter_deps="avcodec"
2723 showspectrum_filter_select="rdft"
2724 spp_filter_deps="gpl avcodec"
2725 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2726 stereo3d_filter_deps="gpl"
2727 subtitles_filter_deps="avformat avcodec libass"
2728 super2xsai_filter_deps="gpl"
2729 tinterlace_filter_deps="gpl"
2730 vidstabdetect_filter_deps="libvidstab"
2731 vidstabtransform_filter_deps="libvidstab"
2732 pixfmts_super2xsai_test_deps="super2xsai_filter"
2733 tinterlace_merge_test_deps="tinterlace_filter"
2734 tinterlace_pad_test_deps="tinterlace_filter"
2735 uspp_filter_deps="gpl avcodec"
2736 zmq_filter_deps="libzmq"
2737 zoompan_filter_deps="swscale"
2738
2739 # examples
2740 avio_reading="avformat avcodec avutil"
2741 avio_list_dir="avformat avutil"
2742 avcodec_example_deps="avcodec avutil"
2743 decoding_encoding_example_deps="avcodec avformat avutil"
2744 demuxing_decoding_example_deps="avcodec avformat avutil"
2745 extract_mvs_example_deps="avcodec avformat avutil"
2746 filter_audio_example_deps="avfilter avutil"
2747 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2748 filtering_video_example_deps="avfilter avcodec avformat avutil"
2749 metadata_example_deps="avformat avutil"
2750 muxing_example_deps="avcodec avformat avutil swscale"
2751 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2752 remuxing_example_deps="avcodec avformat avutil"
2753 resampling_audio_example_deps="avutil swresample"
2754 scaling_video_example_deps="avutil swscale"
2755 transcode_aac_example_deps="avcodec avformat swresample"
2756 transcoding_example_deps="avfilter avcodec avformat avutil"
2757
2758 # libraries, in linking order
2759 avcodec_deps="avutil"
2760 avdevice_deps="avformat avcodec avutil"
2761 avfilter_deps="avutil"
2762 avformat_deps="avcodec avutil"
2763 avresample_deps="avutil"
2764 postproc_deps="avutil gpl"
2765 swresample_deps="avutil"
2766 swscale_deps="avutil"
2767
2768 # programs
2769 ffmpeg_deps="avcodec avfilter avformat swresample"
2770 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2771                null_filter
2772                setpts_filter trim_filter"
2773 ffplay_deps="avcodec avformat swscale swresample sdl"
2774 ffplay_libs='$sdl_libs'
2775 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2776 ffprobe_deps="avcodec avformat"
2777 ffserver_deps="avformat fork sarestart"
2778 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2779
2780 # documentation
2781 podpages_deps="perl"
2782 manpages_deps="perl pod2man"
2783 htmlpages_deps="perl"
2784 htmlpages_deps_any="makeinfo_html texi2html"
2785 txtpages_deps="perl makeinfo"
2786 doc_deps_any="manpages htmlpages podpages txtpages"
2787
2788 # default parameters
2789
2790 logfile="config.log"
2791
2792 # installation paths
2793 prefix_default="/usr/local"
2794 bindir_default='${prefix}/bin'
2795 datadir_default='${prefix}/share/ffmpeg'
2796 docdir_default='${prefix}/share/doc/ffmpeg'
2797 incdir_default='${prefix}/include'
2798 libdir_default='${prefix}/lib'
2799 mandir_default='${prefix}/share/man'
2800
2801 # toolchain
2802 ar_default="ar"
2803 cc_default="gcc"
2804 cxx_default="g++"
2805 host_cc_default="gcc"
2806 cp_f="cp -f"
2807 doxygen_default="doxygen"
2808 install="install"
2809 ln_s="ln -s -f"
2810 nm_default="nm -g"
2811 objformat="elf"
2812 pkg_config_default=pkg-config
2813 if ranlib 2>&1 | grep -q "\-D "; then
2814     ranlib_default="ranlib -D"
2815 else
2816     ranlib_default="ranlib"
2817 fi
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 ranlib_default="${cross_prefix}${ranlib_default}"
3192 strip_default="${cross_prefix}${strip_default}"
3193 windres_default="${cross_prefix}${windres_default}"
3194
3195 sysinclude_default="${sysroot}/usr/include"
3196
3197 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3198     target_exec target_os yasmexe
3199 enabled cross_compile || host_cc_default=$cc
3200 set_default host_cc
3201
3202 pkg_config_fail_message=""
3203 if ! $pkg_config --version >/dev/null 2>&1; then
3204     warn "$pkg_config not found, library detection may fail."
3205     pkg_config=false
3206 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3207     pkg_config_fail_message="
3208 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3209 fi
3210
3211 if test $doxygen != $doxygen_default && \
3212   ! $doxygen --version >/dev/null 2>&1; then
3213     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3214 fi
3215
3216 exesuf() {
3217     case $1 in
3218         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3219     esac
3220 }
3221
3222 EXESUF=$(exesuf $target_os)
3223 HOSTEXESUF=$(exesuf $host_os)
3224
3225 # set temporary file name
3226 : ${TMPDIR:=$TEMPDIR}
3227 : ${TMPDIR:=$TMP}
3228 : ${TMPDIR:=/tmp}
3229
3230 if [ -n "$tempprefix" ] ; then
3231     mktemp(){
3232         echo $tempprefix.${HOSTNAME}.${UID}
3233     }
3234 elif ! check_cmd mktemp -u XXXXXX; then
3235     # simple replacement for missing mktemp
3236     # NOT SAFE FOR GENERAL USE
3237     mktemp(){
3238         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3239     }
3240 fi
3241
3242 tmpfile(){
3243     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3244         (set -C; exec > $tmp) 2>/dev/null ||
3245         die "Unable to create temporary file in $TMPDIR."
3246     append TMPFILES $tmp
3247     eval $1=$tmp
3248 }
3249
3250 trap 'rm -f -- $TMPFILES' EXIT
3251
3252 tmpfile TMPASM .asm
3253 tmpfile TMPC   .c
3254 tmpfile TMPCPP .cpp
3255 tmpfile TMPE   $EXESUF
3256 tmpfile TMPH   .h
3257 tmpfile TMPM   .m
3258 tmpfile TMPO   .o
3259 tmpfile TMPS   .S
3260 tmpfile TMPSH  .sh
3261 tmpfile TMPV   .ver
3262
3263 unset -f mktemp
3264
3265 chmod +x $TMPE
3266
3267 # make sure we can execute files in $TMPDIR
3268 cat > $TMPSH 2>> $logfile <<EOF
3269 #! /bin/sh
3270 EOF
3271 chmod +x $TMPSH >> $logfile 2>&1
3272 if ! $TMPSH >> $logfile 2>&1; then
3273     cat <<EOF
3274 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3275 variable to another directory and make sure that it is not mounted noexec.
3276 EOF
3277     die "Sanity test failed."
3278 fi
3279
3280 armasm_flags(){
3281     for flag; do
3282         case $flag in
3283             # Filter out MSVC cl.exe options from cflags that shouldn't
3284             # be passed to gas-preprocessor
3285             -M[TD]*)                                            ;;
3286             *)                  echo $flag                      ;;
3287         esac
3288    done
3289 }
3290
3291 ccc_flags(){
3292     for flag; do
3293         case $flag in
3294             -std=c99)           echo -c99                       ;;
3295             -mcpu=*)            echo -arch ${flag#*=}           ;;
3296             -mieee)             echo -ieee                      ;;
3297             -O*|-fast)          echo $flag                      ;;
3298             -fno-math-errno)    echo -assume nomath_errno       ;;
3299             -g)                 echo -g3                        ;;
3300             -Wall)              echo -msg_enable level2         ;;
3301             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3302             -Wl,*)              echo $flag                      ;;
3303             -f*|-W*)                                            ;;
3304             *)                  echo $flag                      ;;
3305         esac
3306    done
3307 }
3308
3309 cparser_flags(){
3310     for flag; do
3311         case $flag in
3312             -Wno-switch)             echo -Wno-switch-enum ;;
3313             -Wno-format-zero-length) ;;
3314             -Wdisabled-optimization) ;;
3315             -Wno-pointer-sign)       echo -Wno-other ;;
3316             *)                       echo $flag ;;
3317         esac
3318     done
3319 }
3320
3321 msvc_common_flags(){
3322     for flag; do
3323         case $flag in
3324             # In addition to specifying certain flags under the compiler
3325             # specific filters, they must be specified here as well or else the
3326             # generic catch all at the bottom will print the original flag.
3327             -Wall)                ;;
3328             -std=c99)             ;;
3329             # Common flags
3330             -fomit-frame-pointer) ;;
3331             -g)                   echo -Z7 ;;
3332             -fno-math-errno)      ;;
3333             -fno-common)          ;;
3334             -fno-signed-zeros)    ;;
3335             -fPIC)                ;;
3336             -mthumb)              ;;
3337             -march=*)             ;;
3338             -lz)                  echo zlib.lib ;;
3339             -lavifil32)           echo vfw32.lib ;;
3340             -lavicap32)           echo vfw32.lib user32.lib ;;
3341             -l*)                  echo ${flag#-l}.lib ;;
3342             -L*)                  echo -libpath:${flag#-L} ;;
3343             *)                    echo $flag ;;
3344         esac
3345     done
3346 }
3347
3348 msvc_flags(){
3349     msvc_common_flags "$@"
3350     for flag; do
3351         case $flag in
3352             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3353                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3354                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3355                                        -wd4307 \
3356                                        -wd4273 -wd4554 -wd4701 ;;
3357         esac
3358     done
3359 }
3360
3361 icl_flags(){
3362     msvc_common_flags "$@"
3363     for flag; do
3364         case $flag in
3365             # Despite what Intel's documentation says -Wall, which is supported
3366             # on Windows, does enable remarks so disable them here.
3367             -Wall)                echo $flag -Qdiag-disable:remark ;;
3368             -std=c99)             echo -Qstd=c99 ;;
3369             -flto)                echo -ipo ;;
3370         esac
3371     done
3372 }
3373
3374 icc_flags(){
3375     for flag; do
3376         case $flag in
3377             -flto)                echo -ipo ;;
3378             *)                    echo $flag ;;
3379         esac
3380     done
3381 }
3382
3383 pgi_flags(){
3384     for flag; do
3385         case $flag in
3386             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3387             -fomit-frame-pointer) echo -Mnoframe ;;
3388             -g)                   echo -gopt ;;
3389             *)                    echo $flag ;;
3390         esac
3391     done
3392 }
3393
3394 suncc_flags(){
3395     for flag; do
3396         case $flag in
3397             -march=*|-mcpu=*)
3398                 case "${flag#*=}" in
3399                     native)                   echo -xtarget=native       ;;
3400                     v9|niagara)               echo -xarch=sparc          ;;
3401                     ultrasparc)               echo -xarch=sparcvis       ;;
3402                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3403                     i586|pentium)             echo -xchip=pentium        ;;
3404                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3405                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3406                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3407                     pentium4*)          echo -xtarget=pentium4           ;;
3408                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3409                     *-sse3)             echo -xarch=sse3                 ;;
3410                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3411                     bonnell)                   echo -xarch=ssse3         ;;
3412                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3413                     westmere)                  echo -xtarget=westmere    ;;
3414                     silvermont)                echo -xarch=sse4_2        ;;
3415                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3416                     core-avx*|ivybridge|haswell|broadwell)
3417                                                echo -xarch=avx           ;;
3418                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3419                     btver1)                    echo -xarch=amdsse4a      ;;
3420                     btver2|bdver*)             echo -xarch=avx           ;;
3421                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3422                     k8|opteron|athlon64|athlon-fx)
3423                                                echo -xarch=sse2a         ;;
3424                     athlon*)                   echo -xarch=pentium_proa  ;;
3425                 esac
3426                 ;;
3427             -std=c99)             echo -xc99              ;;
3428             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3429             -fPIC)                echo -KPIC -xcode=pic32 ;;
3430             -W*,*)                echo $flag              ;;
3431             -f*-*|-W*|-mimpure-text)                      ;;
3432             -shared)              echo -G                 ;;
3433             *)                    echo $flag              ;;
3434         esac
3435     done
3436 }
3437
3438 tms470_flags(){
3439     for flag; do
3440         case $flag in
3441             -march=*|-mcpu=*)
3442                 case "${flag#*=}" in
3443                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3444                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3445                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3446                     armv6*|arm11*)          echo -mv=6   ;;
3447                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3448                                             echo -mv=5e  ;;
3449                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3450                 esac
3451                 ;;
3452             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3453             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3454             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3455             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3456             -msoft-float)   echo --float_support=vfplib       ;;
3457             -O[0-3]|-mf=*)  echo $flag                        ;;
3458             -g)             echo -g -mn                       ;;
3459             -pds=*)         echo $flag                        ;;
3460             -D*|-I*)        echo $flag                        ;;
3461             --gcc|--abi=*)  echo $flag                        ;;
3462             -me)            echo $flag                        ;;
3463         esac
3464     done
3465 }
3466
3467 probe_cc(){
3468     pfx=$1
3469     _cc=$2
3470
3471     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3472     unset _ld_o _ldflags _ld_lib _ld_path
3473     unset _depflags _DEPCMD _DEPFLAGS
3474     _flags_filter=echo
3475
3476     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3477         true # no-op to avoid reading stdin in following checks
3478     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3479         _type=llvm_gcc
3480         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3481         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3482         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3483         _cflags_speed='-O3'
3484         _cflags_size='-Os'
3485     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3486         _type=gcc
3487         gcc_version=$($_cc --version | head -n1)
3488         gcc_basever=$($_cc -dumpversion)
3489         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3490         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3491         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3492         if ! $_cc -dumpversion | grep -q '^2\.'; then
3493             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3494         fi
3495         _cflags_speed='-O3'
3496         _cflags_size='-Os'
3497     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3498         _type=icc
3499         _ident=$($_cc --version | head -n1)
3500         _depflags='-MMD'
3501         _cflags_speed='-O3'
3502         _cflags_size='-Os'
3503         _cflags_noopt='-O1'
3504         _flags_filter=icc_flags
3505     elif $_cc -v 2>&1 | grep -q xlc; then
3506         _type=xlc
3507         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3508         _cflags_speed='-O5'
3509         _cflags_size='-O5 -qcompact'
3510     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3511         _type=ccc
3512         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3513         _DEPFLAGS='-M'
3514         _cflags_speed='-fast'
3515         _cflags_size='-O1'
3516         _flags_filter=ccc_flags
3517     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3518         test -d "$sysroot" || die "No valid sysroot specified."
3519         _type=armcc
3520         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3521         armcc_conf="$PWD/armcc.conf"
3522         $_cc --arm_linux_configure                 \
3523              --arm_linux_config_file="$armcc_conf" \
3524              --configure_sysroot="$sysroot"        \
3525              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3526              die "Error creating armcc configuration file."
3527         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3528         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3529         as_default="${cross_prefix}gcc"
3530         _depflags='-MMD'
3531         _cflags_speed='-O3'
3532         _cflags_size='-Os'
3533     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3534         _type=tms470
3535         _ident=$($_cc -version | head -n1 | tr -s ' ')
3536         _flags='--gcc --abi=eabi -me'
3537         _cc_e='-ppl -fe=$@'
3538         _cc_o='-fe=$@'
3539         _depflags='-ppa -ppd=$(@:.o=.d)'
3540         _cflags_speed='-O3 -mf=5'
3541         _cflags_size='-O3 -mf=2'
3542         _flags_filter=tms470_flags
3543     elif $_cc -v 2>&1 | grep -q clang; then
3544         _type=clang
3545         _ident=$($_cc --version | head -n1)
3546         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3547         _cflags_speed='-O3'
3548         _cflags_size='-Os'
3549     elif $_cc -V 2>&1 | grep -q Sun; then
3550         _type=suncc
3551         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3552         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3553         _DEPFLAGS='-xM1 -xc99'
3554         _ldflags='-std=c99'
3555         _cflags_speed='-O5'
3556         _cflags_size='-O5 -xspace'
3557         _flags_filter=suncc_flags
3558     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3559         _type=pathscale
3560         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3561         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3562         _cflags_speed='-O2'
3563         _cflags_size='-Os'
3564         _flags_filter='filter_out -Wdisabled-optimization'
3565     elif $_cc -v 2>&1 | grep -q Open64; then
3566         _type=open64
3567         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3568         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3569         _cflags_speed='-O2'
3570         _cflags_size='-Os'
3571         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3572     elif $_cc -V 2>&1 | grep -q Portland; then
3573         _type=pgi
3574         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3575         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3576         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3577         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3578         _cflags_noopt="-O"
3579         _flags_filter=pgi_flags
3580     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3581         _type=armasm
3582         _ident=$($_cc | head -n1)
3583         # 4509: "This form of conditional instruction is deprecated"
3584         _flags="-nologo -ignore 4509"
3585         _flags_filter=armasm_flags
3586     elif $_cc 2>&1 | grep -q Intel; then
3587         _type=icl
3588         _ident=$($_cc 2>&1 | head -n1)
3589         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3590         # Not only is O3 broken on 13.x+ but it is slower on all previous
3591         # versions (tested) as well.
3592         _cflags_speed="-O2"
3593         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3594         if $_cc 2>&1 | grep -q Linker; then
3595             _ld_o='-out:$@'
3596         else
3597             _ld_o='-Fe$@'
3598         fi
3599         _cc_o='-Fo$@'
3600         _cc_e='-P'
3601         _flags_filter=icl_flags
3602         _ld_lib='lib%.a'
3603         _ld_path='-libpath:'
3604         # -Qdiag-error to make icl error when seeing certain unknown arguments
3605         _flags='-nologo -Qdiag-error:4044,10157'
3606         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3607         # with MSVC which enables it by default.
3608         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3609         disable stripping
3610     elif $_cc 2>&1 | grep -q Microsoft; then
3611         _type=msvc
3612         _ident=$($_cc 2>&1 | head -n1)
3613         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3614         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3615         _cflags_speed="-O2"
3616         _cflags_size="-O1"
3617         if $_cc 2>&1 | grep -q Linker; then
3618             _ld_o='-out:$@'
3619         else
3620             _ld_o='-Fe$@'
3621         fi
3622         _cc_o='-Fo$@'
3623         _cc_e='-P -Fi$@'
3624         _flags_filter=msvc_flags
3625         _ld_lib='lib%.a'
3626         _ld_path='-libpath:'
3627         _flags='-nologo'
3628         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3629         disable stripping
3630     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3631         _type=cparser
3632         _ident=$($_cc --version | head -n1)
3633         _depflags='-MMD'
3634         _cflags_speed='-O4'
3635         _cflags_size='-O2'
3636         _flags_filter=cparser_flags
3637     fi
3638
3639     eval ${pfx}_type=\$_type
3640     eval ${pfx}_ident=\$_ident
3641 }
3642
3643 set_ccvars(){
3644     eval ${1}_C=\${_cc_c-\${${1}_C}}
3645     eval ${1}_E=\${_cc_e-\${${1}_E}}
3646     eval ${1}_O=\${_cc_o-\${${1}_O}}
3647
3648     if [ -n "$_depflags" ]; then
3649         eval ${1}_DEPFLAGS=\$_depflags
3650     else
3651         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3652         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3653         eval DEP${1}FLAGS=\$_flags
3654     fi
3655 }
3656
3657 probe_cc cc "$cc"
3658 cflags_filter=$_flags_filter
3659 cflags_speed=$_cflags_speed
3660 cflags_size=$_cflags_size
3661 cflags_noopt=$_cflags_noopt
3662 add_cflags $_flags $_cflags
3663 cc_ldflags=$_ldflags
3664 set_ccvars CC
3665
3666 probe_cc hostcc "$host_cc"
3667 host_cflags_filter=$_flags_filter
3668 add_host_cflags  $_flags $_cflags
3669 set_ccvars HOSTCC
3670
3671 test -n "$cc_type" && enable $cc_type ||
3672     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3673
3674 : ${as_default:=$cc}
3675 : ${dep_cc_default:=$cc}
3676 : ${ld_default:=$cc}
3677 : ${host_ld_default:=$host_cc}
3678 set_default ar as dep_cc ld host_ld windres
3679
3680 probe_cc as "$as"
3681 asflags_filter=$_flags_filter
3682 add_asflags $_flags $_cflags
3683 set_ccvars AS
3684
3685 probe_cc ld "$ld"
3686 ldflags_filter=$_flags_filter
3687 add_ldflags $_flags $_ldflags
3688 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3689 LD_O=${_ld_o-$LD_O}
3690 LD_LIB=${_ld_lib-$LD_LIB}
3691 LD_PATH=${_ld_path-$LD_PATH}
3692
3693 probe_cc hostld "$host_ld"
3694 host_ldflags_filter=$_flags_filter
3695 add_host_ldflags $_flags $_ldflags
3696 HOSTLD_O=${_ld_o-$HOSTLD_O}
3697
3698 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3699     probe_cc depcc "$dep_cc"
3700     CCDEP=${_DEPCMD:-$DEPCMD}
3701     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3702     DEPCCFLAGS=$_flags
3703 fi
3704
3705 if $ar 2>&1 | grep -q Microsoft; then
3706     arflags="-nologo"
3707     ar_o='-out:$@'
3708 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3709     arflags="rq"
3710     ar_o='$@'
3711 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3712     arflags='-Xany -r -c'
3713     ar_o='$@'
3714 elif $ar 2>&1 | grep -q "\[D\] "; then
3715     arflags="rcD"
3716     ar_o='$@'
3717 else
3718     arflags="rc"
3719     ar_o='$@'
3720 fi
3721
3722 add_cflags $extra_cflags
3723 add_cxxflags $extra_cxxflags
3724 add_asflags $extra_cflags
3725
3726 if test -n "$sysroot"; then
3727     case "$cc_type" in
3728         gcc|llvm_gcc|clang)
3729             add_cppflags --sysroot="$sysroot"
3730             add_ldflags --sysroot="$sysroot"
3731 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3732             add_cppflags -isysroot "$sysroot"
3733             add_ldflags -isysroot "$sysroot"
3734         ;;
3735         tms470)
3736             add_cppflags -I"$sysinclude"
3737             add_ldflags  --sysroot="$sysroot"
3738         ;;
3739     esac
3740 fi
3741
3742 if test "$cpu" = host; then
3743     enabled cross_compile &&
3744         die "--cpu=host makes no sense when cross-compiling."
3745
3746     case "$cc_type" in
3747         gcc|llvm_gcc)
3748             check_native(){
3749                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3750                 sed -n "/cc1.*$1=/{
3751                             s/.*$1=\\([^ ]*\\).*/\\1/
3752                             p
3753                             q
3754                         }" $TMPE
3755             }
3756             cpu=$(check_native -march || check_native -mcpu)
3757         ;;
3758     esac
3759
3760     test "${cpu:-host}" = host &&
3761         die "--cpu=host not supported with compiler $cc"
3762 fi
3763
3764 # Deal with common $arch aliases
3765 case "$arch" in
3766     aarch64|arm64)
3767         arch="aarch64"
3768     ;;
3769     arm*|iPad*|iPhone*)
3770         arch="arm"
3771     ;;
3772     mips*|IP*)
3773         arch="mips"
3774     ;;
3775     parisc*|hppa*)
3776         arch="parisc"
3777     ;;
3778     "Power Macintosh"|ppc*|powerpc*)
3779         arch="ppc"
3780     ;;
3781     s390|s390x)
3782         arch="s390"
3783     ;;
3784     sh4|sh)
3785         arch="sh4"
3786     ;;
3787     sun4u|sparc*)
3788         arch="sparc"
3789     ;;
3790     tilegx|tile-gx)
3791         arch="tilegx"
3792     ;;
3793     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3794         arch="x86"
3795     ;;
3796 esac
3797
3798 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3799 enable $arch
3800
3801 # Add processor-specific flags
3802 if enabled aarch64; then
3803
3804     case $cpu in
3805         armv*)
3806             cpuflags="-march=$cpu"
3807         ;;
3808         *)
3809             cpuflags="-mcpu=$cpu"
3810         ;;
3811     esac
3812
3813 elif enabled alpha; then
3814
3815     cpuflags="-mcpu=$cpu"
3816
3817 elif enabled arm; then
3818
3819     check_arm_arch() {
3820         check_cpp_condition stddef.h \
3821             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3822             $cpuflags
3823     }
3824
3825     probe_arm_arch() {
3826         if   check_arm_arch 4;        then echo armv4;
3827         elif check_arm_arch 4T;       then echo armv4t;
3828         elif check_arm_arch 5;        then echo armv5;
3829         elif check_arm_arch 5E;       then echo armv5e;
3830         elif check_arm_arch 5T;       then echo armv5t;
3831         elif check_arm_arch 5TE;      then echo armv5te;
3832         elif check_arm_arch 5TEJ;     then echo armv5te;
3833         elif check_arm_arch 6;        then echo armv6;
3834         elif check_arm_arch 6J;       then echo armv6j;
3835         elif check_arm_arch 6K;       then echo armv6k;
3836         elif check_arm_arch 6Z;       then echo armv6z;
3837         elif check_arm_arch 6ZK;      then echo armv6zk;
3838         elif check_arm_arch 6T2;      then echo armv6t2;
3839         elif check_arm_arch 7;        then echo armv7;
3840         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3841         elif check_arm_arch 7S;       then echo armv7-a;
3842         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3843         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3844         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3845         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3846         fi
3847     }
3848
3849     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3850
3851     case $cpu in
3852         armv*)
3853             cpuflags="-march=$cpu"
3854             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3855         ;;
3856         *)
3857             cpuflags="-mcpu=$cpu"
3858             case $cpu in
3859                 cortex-a*)                               subarch=armv7a  ;;
3860                 cortex-r*)                               subarch=armv7r  ;;
3861                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3862                 arm11*)                                  subarch=armv6   ;;
3863                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3864                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3865                 *)                             subarch=$(probe_arm_arch) ;;
3866             esac
3867         ;;
3868     esac
3869
3870     case "$subarch" in
3871         armv5t*)    enable fast_clz                ;;
3872         armv[6-8]*)
3873             enable fast_clz
3874             disabled fast_unaligned || enable fast_unaligned
3875             ;;
3876     esac
3877
3878 elif enabled avr32; then
3879
3880     case $cpu in
3881         ap7[02]0[0-2])
3882             subarch="avr32_ap"
3883             cpuflags="-mpart=$cpu"
3884         ;;
3885         ap)
3886             subarch="avr32_ap"
3887             cpuflags="-march=$cpu"
3888         ;;
3889         uc3[ab]*)
3890             subarch="avr32_uc"
3891             cpuflags="-mcpu=$cpu"
3892         ;;
3893         uc)
3894             subarch="avr32_uc"
3895             cpuflags="-march=$cpu"
3896         ;;
3897     esac
3898
3899 elif enabled bfin; then
3900
3901     cpuflags="-mcpu=$cpu"
3902
3903 elif enabled mips; then
3904
3905     cpuflags="-march=$cpu"
3906
3907     case $cpu in
3908         24kc)
3909             disable mips32r5
3910             disable mips64r6
3911             disable mipsfpu
3912             disable mipsdspr1
3913             disable mipsdspr2
3914             disable msa
3915         ;;
3916         24kf*)
3917             disable mips32r5
3918             disable mips64r6
3919             disable mipsdspr1
3920             disable mipsdspr2
3921             disable msa
3922         ;;
3923         24kec|34kc|1004kc)
3924             disable mips32r5
3925             disable mips64r6
3926             disable mipsfpu
3927             disable mipsdspr2
3928             disable msa
3929         ;;
3930         24kef*|34kf*|1004kf*)
3931             disable mips32r5
3932             disable mips64r6
3933             disable mipsdspr2
3934             disable msa
3935         ;;
3936         74kc)
3937             disable mips32r5
3938             disable mips64r6
3939             disable mipsfpu
3940             disable msa
3941         ;;
3942         74kf)
3943             disable mips32r5
3944             disable mips64r6
3945             disable msa
3946         ;;
3947         p5600)
3948             disable mips64r6
3949             disable mipsdspr1
3950             disable mipsdspr2
3951
3952             check_cflags "-mtune=p5600"
3953         ;;
3954         i6400)
3955             disable mips32r5
3956             disable mipsdspr1
3957             disable mipsdspr2
3958             disable mipsfpu
3959
3960             check_cflags "-mtune=i6400 -mabi=64"
3961             check_ldflags "-mabi=64"
3962         ;;
3963         loongson3*)
3964             disable mipsfpu
3965             disable mips32r2
3966             disable mips32r5
3967             disable mips64r6
3968             disable mipsdspr1
3969             disable mipsdspr2
3970             disable msa
3971             enable local_aligned_8 local_aligned_16
3972             enable simd_align_16
3973             enable fast_64bit
3974             enable fast_clz
3975             enable fast_cmov
3976             enable fast_unaligned
3977             disable aligned_stack
3978             cpuflags="-march=loongson3a -mhard-float"
3979         ;;
3980         generic)
3981             disable mips32r5
3982             disable mips64r6
3983             disable msa
3984         ;;
3985     esac
3986
3987 elif enabled ppc; then
3988
3989     disable ldbrx
3990
3991     case $(tolower $cpu) in
3992         601|ppc601|powerpc601)
3993             cpuflags="-mcpu=601"
3994             disable altivec
3995         ;;
3996         603*|ppc603*|powerpc603*)
3997             cpuflags="-mcpu=603"
3998             disable altivec
3999         ;;
4000         604*|ppc604*|powerpc604*)
4001             cpuflags="-mcpu=604"
4002             disable altivec
4003         ;;
4004         g3|75*|ppc75*|powerpc75*)
4005             cpuflags="-mcpu=750"
4006             disable altivec
4007         ;;
4008         g4|745*|ppc745*|powerpc745*)
4009             cpuflags="-mcpu=7450"
4010             disable vsx
4011         ;;
4012         74*|ppc74*|powerpc74*)
4013             cpuflags="-mcpu=7400"
4014             disable vsx
4015         ;;
4016         g5|970|ppc970|powerpc970)
4017             cpuflags="-mcpu=970"
4018             disable vsx
4019         ;;
4020         power[3-6]*)
4021             cpuflags="-mcpu=$cpu"
4022             disable vsx
4023         ;;
4024         power[7-8]*)
4025             cpuflags="-mcpu=$cpu"
4026         ;;
4027         cell)
4028             cpuflags="-mcpu=cell"
4029             enable ldbrx
4030             disable vsx
4031         ;;
4032         e500mc)
4033             cpuflags="-mcpu=e500mc"
4034             disable altivec
4035         ;;
4036         e500v2)
4037             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4038             disable altivec
4039             disable dcbzl
4040         ;;
4041         e500)
4042             cpuflags="-mcpu=8540 -mhard-float"
4043             disable altivec
4044             disable dcbzl
4045         ;;
4046     esac
4047
4048 elif enabled sparc; then
4049
4050     case $cpu in
4051         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4052             cpuflags="-mcpu=$cpu"
4053         ;;
4054         ultrasparc*|niagara[234])
4055             cpuflags="-mcpu=$cpu"
4056         ;;
4057     esac
4058
4059 elif enabled x86; then
4060
4061     case $cpu in
4062         i[345]86|pentium)
4063             cpuflags="-march=$cpu"
4064             disable i686
4065             disable mmx
4066         ;;
4067         # targets that do NOT support nopl and conditional mov (cmov)
4068         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4069             cpuflags="-march=$cpu"
4070             disable i686
4071         ;;
4072         # targets that do support nopl and conditional mov (cmov)
4073         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4074         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4075             cpuflags="-march=$cpu"
4076             enable i686
4077             enable fast_cmov
4078         ;;
4079         # targets that do support conditional mov but on which it's slow
4080         pentium4|pentium4m|prescott|nocona)
4081             cpuflags="-march=$cpu"
4082             enable i686
4083             disable fast_cmov
4084         ;;
4085     esac
4086
4087 fi
4088
4089 if [ "$cpu" != generic ]; then
4090     add_cflags  $cpuflags
4091     add_asflags $cpuflags
4092 fi
4093
4094 # compiler sanity check
4095 check_exec <<EOF
4096 int main(void){ return 0; }
4097 EOF
4098 if test "$?" != 0; then
4099     echo "$cc is unable to create an executable file."
4100     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4101         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4102         echo "Only do this if you know what cross compiling means."
4103     fi
4104     die "C compiler test failed."
4105 fi
4106
4107 add_cppflags -D_ISOC99_SOURCE
4108 add_cxxflags -D__STDC_CONSTANT_MACROS
4109 check_cflags -std=c99
4110 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4111 #include <stdlib.h>
4112 EOF
4113 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4114 #include <stdlib.h>
4115 EOF
4116
4117 add_host_cppflags -D_ISOC99_SOURCE
4118 check_host_cflags -std=c99
4119 check_host_cflags -Wall
4120 check_host_cflags -O3
4121
4122 check_64bit(){
4123     arch32=$1
4124     arch64=$2
4125     expr=$3
4126     check_code cc "" "int test[2*($expr) - 1]" &&
4127         subarch=$arch64 || subarch=$arch32
4128 }
4129
4130 case "$arch" in
4131     aarch64|alpha|ia64)
4132         spic=$shared
4133     ;;
4134     mips)
4135         check_64bit mips mips64 '_MIPS_SIM > 1'
4136         spic=$shared
4137     ;;
4138     parisc)
4139         check_64bit parisc parisc64 'sizeof(void *) > 4'
4140         spic=$shared
4141     ;;
4142     ppc)
4143         check_64bit ppc ppc64 'sizeof(void *) > 4'
4144         spic=$shared
4145     ;;
4146     s390)
4147         check_64bit s390 s390x 'sizeof(void *) > 4'
4148         spic=$shared
4149     ;;
4150     sparc)
4151         check_64bit sparc sparc64 'sizeof(void *) > 4'
4152         spic=$shared
4153     ;;
4154     x86)
4155         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4156         # Treat x32 as x64 for now. Note it also needs spic=$shared
4157         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4158             subarch=x86_64
4159         if test "$subarch" = "x86_64"; then
4160             spic=$shared
4161         fi
4162     ;;
4163     ppc)
4164         check_cc <<EOF && subarch="ppc64"
4165         int test[(int)sizeof(char*) - 7];
4166 EOF
4167     ;;
4168 esac
4169
4170 enable $subarch
4171 enabled spic && enable_weak pic
4172
4173 # OS specific
4174 case $target_os in
4175     aix)
4176         SHFLAGS=-shared
4177         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4178         enabled shared && add_ldflags -Wl,-brtl
4179         ;;
4180     android)
4181         disable symver
4182         enable section_data_rel_ro
4183         SLIB_INSTALL_NAME='$(SLIBNAME)'
4184         SLIB_INSTALL_LINKS=
4185         # soname not set on purpose
4186         SHFLAGS=-shared
4187         ;;
4188     haiku)
4189         prefix_default="/boot/common"
4190         network_extralibs="-lnetwork"
4191         host_libs=
4192         ;;
4193     sunos)
4194         SHFLAGS='-shared -Wl,-h,$$(@F)'
4195         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4196         network_extralibs="-lsocket -lnsl"
4197         add_cppflags -D__EXTENSIONS__
4198         # When using suncc to build, the Solaris linker will mark
4199         # an executable with each instruction set encountered by
4200         # the Solaris assembler.  As our libraries contain their own
4201         # guards for processor-specific code, instead suppress
4202         # generation of the HWCAPS ELF section on Solaris x86 only.
4203         enabled_all suncc x86 &&
4204             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4205             add_ldflags -Wl,-M,mapfile
4206         nm_default='nm -P -g'
4207         ;;
4208     netbsd)
4209         disable symver
4210         oss_indev_extralibs="-lossaudio"
4211         oss_outdev_extralibs="-lossaudio"
4212         enabled gcc || check_ldflags -Wl,-zmuldefs
4213         ;;
4214     openbsd|bitrig)
4215         disable symver
4216         SHFLAGS='-shared'
4217         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4218         SLIB_INSTALL_LINKS=
4219         oss_indev_extralibs="-lossaudio"
4220         oss_outdev_extralibs="-lossaudio"
4221         ;;
4222     dragonfly)
4223         disable symver
4224         ;;
4225     freebsd)
4226         ;;
4227     bsd/os)
4228         add_extralibs -lpoll -lgnugetopt
4229         strip="strip -d"
4230         ;;
4231     darwin)
4232         enabled ppc && add_asflags -force_cpusubtype_ALL
4233         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4234         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4235         strip="${strip} -x"
4236         add_ldflags -Wl,-dynamic,-search_paths_first
4237         SLIBSUF=".dylib"
4238         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4239         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4240         objformat="macho"
4241         enabled x86_64 && objformat="macho64"
4242         enabled_any pic shared x86_64 ||
4243             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4244         ;;
4245     mingw32*)
4246         if test $target_os = "mingw32ce"; then
4247             disable network
4248         else
4249             target_os=mingw32
4250         fi
4251         LIBTARGET=i386
4252         if enabled x86_64; then
4253             LIBTARGET="i386:x86-64"
4254         elif enabled arm; then
4255             LIBTARGET=arm-wince
4256         fi
4257         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4258         check_ldflags -Wl,--nxcompat
4259         check_ldflags -Wl,--dynamicbase
4260         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4261         shlibdir_default="$bindir_default"
4262         SLIBPREF=""
4263         SLIBSUF=".dll"
4264         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4265         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4266         dlltool="${cross_prefix}dlltool"
4267         if check_cmd lib.exe -list; then
4268             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4269             if enabled x86_64; then
4270                 LIBTARGET=x64
4271             fi
4272         elif check_cmd $dlltool --version; then
4273             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4274         fi
4275         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4276         SLIB_INSTALL_LINKS=
4277         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4278         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4279         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4280         objformat="win32"
4281         ranlib=:
4282         enable dos_paths
4283         ;;
4284     win32|win64)
4285         disable symver
4286         if enabled shared; then
4287             # Link to the import library instead of the normal static library
4288             # for shared libs.
4289             LD_LIB='%.lib'
4290             # Cannot build both shared and static libs with MSVC or icl.
4291             disable static
4292         fi
4293         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4294         shlibdir_default="$bindir_default"
4295         SLIBPREF=""
4296         SLIBSUF=".dll"
4297         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4298         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4299         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4300         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4301         SLIB_INSTALL_LINKS=
4302         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4303         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4304         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4305         objformat="win32"
4306         ranlib=:
4307         enable dos_paths
4308         ;;
4309     cygwin*)
4310         target_os=cygwin
4311         shlibdir_default="$bindir_default"
4312         SLIBPREF="cyg"
4313         SLIBSUF=".dll"
4314         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4315         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4316         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4317         SLIB_INSTALL_LINKS=
4318         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4319         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4320         objformat="win32"
4321         enable dos_paths
4322         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4323         ;;
4324     *-dos|freedos|opendos)
4325         network_extralibs="-lsocket"
4326         objformat="coff"
4327         enable dos_paths
4328         add_cppflags -U__STRICT_ANSI__
4329         ;;
4330     linux)
4331         enable dv1394
4332         enable section_data_rel_ro
4333         ;;
4334     irix*)
4335         target_os=irix
4336         ranlib="echo ignoring ranlib"
4337         ;;
4338     os/2*)
4339         strip="lxlite -CS"
4340         ln_s="cp -f"
4341         objformat="aout"
4342         add_cppflags -D_GNU_SOURCE
4343         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4344         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4345         LIBSUF="_s.a"
4346         SLIBPREF=""
4347         SLIBSUF=".dll"
4348         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4349         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4350         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4351             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4352             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4353             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4354             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4355         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4356             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4357         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4358         enable dos_paths
4359         enable_weak os2threads
4360         ;;
4361     gnu/kfreebsd)
4362         add_cppflags -D_BSD_SOURCE
4363         ;;
4364     gnu)
4365         ;;
4366     qnx)
4367         add_cppflags -D_QNX_SOURCE
4368         network_extralibs="-lsocket"
4369         ;;
4370     symbian)
4371         SLIBSUF=".dll"
4372         enable dos_paths
4373         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4374         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4375         add_ldflags -Wl,--target1-abs,--no-undefined \
4376                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4377                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4378         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4379                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4380                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4381         ;;
4382     osf1)
4383         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4384         ;;
4385     minix)
4386         ;;
4387     plan9)
4388         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4389                      -D_REENTRANT_SOURCE        \
4390                      -D_RESEARCH_SOURCE         \
4391                      -DFD_SETSIZE=96            \
4392                      -DHAVE_SOCK_OPTS
4393         add_compat strtod.o strtod=avpriv_strtod
4394         network_extralibs='-lbsd'
4395         exeobjs=compat/plan9/main.o
4396         disable ffserver
4397         cp_f='cp'
4398         ;;
4399     none)
4400         ;;
4401     *)
4402         die "Unknown OS '$target_os'."
4403         ;;
4404 esac
4405
4406 # determine libc flavour
4407
4408 probe_libc(){
4409     pfx=$1
4410     pfx_no_=${pfx%_}
4411     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4412     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4413         eval ${pfx}libc_type=uclibc
4414         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4415     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4416         eval ${pfx}libc_type=glibc
4417         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4418     # MinGW headers can be installed on Cygwin, so check for newlib first.
4419     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4420         eval ${pfx}libc_type=newlib
4421         add_${pfx}cppflags -U__STRICT_ANSI__
4422     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4423     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4424         eval ${pfx}libc_type=mingw64
4425         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4426             add_compat msvcrt/snprintf.o
4427             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4428         fi
4429         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4430         eval test \$${pfx_no_}cc_type = "gcc" &&
4431             add_${pfx}cppflags -D__printf__=__gnu_printf__
4432     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4433          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4434         eval ${pfx}libc_type=mingw32
4435         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4436             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4437             die "ERROR: MinGW32 runtime version must be >= 3.15."
4438         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4439         eval test \$${pfx_no_}cc_type = "gcc" &&
4440             add_${pfx}cppflags -D__printf__=__gnu_printf__
4441     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4442         eval ${pfx}libc_type=msvcrt
4443         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4444             if [ "$pfx" = host_ ]; then
4445                 add_host_cppflags -Dsnprintf=_snprintf
4446             else
4447                 add_compat strtod.o strtod=avpriv_strtod
4448                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4449                                              _snprintf=avpriv_snprintf  \
4450                                              vsnprintf=avpriv_vsnprintf
4451             fi
4452         fi
4453         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4454         # 0x601 by default unless something else is set by the user.
4455         # This can easily lead to us detecting functions only present
4456         # in such new versions and producing binaries requiring windows 7.0.
4457         # Therefore explicitly set the default to XP unless the user has
4458         # set something else on the command line.
4459         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4460             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4461     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4462         eval ${pfx}libc_type=klibc
4463     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4464         eval ${pfx}libc_type=bionic
4465     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4466         eval ${pfx}libc_type=solaris
4467         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4468     fi
4469     check_${pfx}cc <<EOF
4470 #include <time.h>
4471 void *v = localtime_r;
4472 EOF
4473 test "$?" != 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
4474 #include <time.h>
4475 void *v = localtime_r;
4476 EOF
4477
4478 }
4479
4480 probe_libc
4481 test -n "$libc_type" && enable libc_$libc_type
4482 probe_libc host_
4483 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4484
4485 case $libc_type in
4486     bionic)
4487         add_compat strtod.o strtod=avpriv_strtod
4488         ;;
4489 esac
4490
4491 # hacks for compiler/libc/os combinations
4492
4493 if enabled_all tms470 libc_glibc; then
4494     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4495     add_cppflags -D__USER_LABEL_PREFIX__=
4496     add_cppflags -D__builtin_memset=memset
4497     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4498     add_cflags   -pds=48    # incompatible redefinition of macro
4499 fi
4500
4501 if enabled_all ccc libc_glibc; then
4502     add_ldflags -Wl,-z,now  # calls to libots crash without this
4503 fi
4504
4505 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4506     add_cppflags '-I\$(SRC_PATH)/compat/float'
4507
4508 esc(){
4509     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4510 }
4511
4512 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4513
4514 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4515
4516 set_default libdir
4517 : ${shlibdir_default:="$libdir"}
4518 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4519
4520 set_default $PATHS_LIST
4521 set_default nm
4522
4523 # we need to build at least one lib type
4524 if ! enabled_any static shared; then
4525     cat <<EOF
4526 At least one library type must be built.
4527 Specify --enable-static to build the static libraries or --enable-shared to
4528 build the shared libraries as well. To only build the shared libraries specify
4529 --disable-static in addition to --enable-shared.
4530 EOF
4531     exit 1;
4532 fi
4533
4534 die_license_disabled() {
4535     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4536 }
4537
4538 die_license_disabled_gpl() {
4539     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4540 }
4541
4542 die_license_disabled gpl frei0r
4543 die_license_disabled gpl libcdio
4544 die_license_disabled gpl libsmbclient
4545 die_license_disabled gpl libutvideo
4546 die_license_disabled gpl libvidstab
4547 die_license_disabled gpl libx264
4548 die_license_disabled gpl libx265
4549 die_license_disabled gpl libxavs
4550 die_license_disabled gpl libxvid
4551 die_license_disabled gpl libzvbi
4552 die_license_disabled gpl x11grab
4553
4554 die_license_disabled nonfree libaacplus
4555 die_license_disabled nonfree libfaac
4556 die_license_disabled nonfree nvenc
4557 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4558 enabled gpl && die_license_disabled_gpl nonfree openssl
4559
4560 die_license_disabled version3 libopencore_amrnb
4561 die_license_disabled version3 libopencore_amrwb
4562 die_license_disabled version3 libsmbclient
4563 die_license_disabled version3 libvo_aacenc
4564 die_license_disabled version3 libvo_amrwbenc
4565
4566 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4567
4568 disabled optimizations || check_cflags -fomit-frame-pointer
4569
4570 enable_weak_pic() {
4571     disabled pic && return
4572     enable pic
4573     add_cppflags -DPIC
4574     case "$target_os" in
4575     mingw*|cygwin*)
4576         ;;
4577     *)
4578         add_cflags -fPIC
4579         ;;
4580     esac
4581     add_asflags  -fPIC
4582 }
4583
4584 enabled pic && enable_weak_pic
4585
4586 check_cc <<EOF || die "Symbol mangling check failed."
4587 int ff_extern;
4588 EOF
4589 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4590 extern_prefix=${sym%%ff_extern*}
4591
4592 check_cc <<EOF && enable_weak inline_asm
4593 void foo(void) { __asm__ volatile ("" ::); }
4594 EOF
4595
4596 _restrict=
4597 for restrict_keyword in restrict __restrict__ __restrict; do
4598     check_cc <<EOF && _restrict=$restrict_keyword && break
4599 void foo(char * $restrict_keyword p);
4600 EOF
4601 done
4602
4603 check_cc <<EOF && enable pragma_deprecated
4604 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4605 EOF
4606
4607 check_cc <<EOF && enable attribute_packed
4608 struct { int x; } __attribute__((packed)) x;
4609 EOF
4610
4611 check_cc <<EOF && enable attribute_may_alias
4612 union { int x; } __attribute__((may_alias)) x;
4613 EOF
4614
4615 check_cc <<EOF || die "endian test failed"
4616 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4617 EOF
4618 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4619
4620 if ! enabled ppc64 || enabled bigendian; then
4621     disable vsx
4622 fi
4623
4624 check_gas() {
4625     log "check_gas using '$as' as AS"
4626     # :vararg is used on aarch64, arm and ppc altivec
4627     check_as <<EOF || return 1
4628 .macro m n, y:vararg=0
4629 \n: .int \y
4630 .endm
4631 m x
4632 EOF
4633     # .altmacro is only used in arm asm
4634     ! enabled arm || check_as <<EOF || return 1
4635 .altmacro
4636 EOF
4637     enable gnu_as
4638     return 0
4639 }
4640
4641 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4642     nogas=:
4643     enabled_any arm aarch64 && nogas=die
4644     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4645     as_noop=-v
4646
4647     case $as_type in
4648         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4649         gcc)  gaspp_as_type=gas ;;
4650         *)    gaspp_as_type=$as_type ;;
4651     esac
4652
4653     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4654
4655     test "${as#*gas-preprocessor.pl}" != "$as" ||
4656     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4657         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4658
4659     if ! check_gas ; then
4660         as=${gas:=$as}
4661         check_gas || \
4662             $nogas "GNU assembler not found, install/update gas-preprocessor"
4663     fi
4664
4665     check_as <<EOF && enable as_func
4666 .func test
4667 .endfunc
4668 EOF
4669 fi
4670
4671 check_inline_asm inline_asm_labels '"1:\n"'
4672
4673 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4674
4675 if enabled aarch64; then
4676     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4677     # internal assembler in clang 3.3 does not support this instruction
4678     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4679     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4680
4681     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4682
4683 elif enabled alpha; then
4684
4685     check_cflags -mieee
4686
4687 elif enabled arm; then
4688
4689     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4690 float func(float a, float b){ return a+b; }
4691 EOF
4692
4693     enabled thumb && check_cflags -mthumb || check_cflags -marm
4694
4695     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4696         enable vfp_args
4697     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4698         case "${cross_prefix:-$cc}" in
4699             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4700             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4701 __asm__ (".eabi_attribute 28, 1");
4702 int main(void) { return 0; }
4703 EOF
4704         esac
4705         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4706     fi
4707
4708     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4709     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4710     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4711     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4712     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4713     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4714     enabled setend  && check_insn setend  'setend be'
4715
4716     [ $target_os = linux ] || [ $target_os = android ] ||
4717         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4718             $ARCH_EXT_LIST_ARM
4719
4720     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4721
4722     check_as <<EOF && enable as_dn_directive
4723 ra .dn d0.i16
4724 .unreq ra
4725 EOF
4726
4727     # llvm's integrated assembler supports .object_arch from llvm 3.5
4728     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4729 .object_arch armv4
4730 EOF
4731
4732     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4733
4734 elif enabled mips; then
4735
4736     # Enable minimum ISA based on selected options
4737     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4738         add_cflags "-mips64r2"
4739         add_asflags "-mips64r2"
4740     elif enabled mips64 && enabled mipsfpu && disabled loongson3; then
4741         add_cflags "-mips64"
4742         add_asflags "-mips64"
4743     elif enabled mipsdspr1 || enabled mipsdspr2; then
4744         add_cflags "-mips32r2 -mfp32"
4745         add_asflags "-mips32r2 -mfp32"
4746     elif enabled mips32r5 || enabled mips64r6; then
4747         check_cflags "-mfp64"
4748         check_ldflags "-mfp64"
4749     fi
4750
4751     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4752      check_ldflags "-mips32r5" &&
4753      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4754     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4755      check_ldflags "-mips64r6" &&
4756      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4757     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4758      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4759     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4760      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4761     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4762      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4763     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4764      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4765     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4766
4767     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4768     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4769     enabled msa && add_asflags "-mmsa"
4770
4771 elif enabled parisc; then
4772
4773     if enabled gcc; then
4774         case $($cc -dumpversion) in
4775             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4776         esac
4777     fi
4778
4779 elif enabled ppc; then
4780
4781     enable local_aligned_8 local_aligned_16 local_aligned_32
4782
4783     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4784     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4785     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4786     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4787
4788     # AltiVec flags: The FSF version of GCC differs from the Apple version
4789     if enabled altivec; then
4790         check_cflags -maltivec -mabi=altivec &&
4791         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4792         check_cflags -faltivec
4793
4794         # check if our compiler supports Motorola AltiVec C API
4795         check_cc <<EOF || disable altivec
4796 $inc_altivec_h
4797 int main(void) {
4798     vector signed int v1 = (vector signed int) { 0 };
4799     vector signed int v2 = (vector signed int) { 1 };
4800     v1 = vec_add(v1, v2);
4801     return 0;
4802 }
4803 EOF
4804
4805         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4806     fi
4807
4808     if enabled vsx; then
4809         check_cflags -mvsx &&
4810         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4811     fi
4812
4813     if enabled power8; then
4814         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4815     fi
4816
4817 elif enabled x86; then
4818
4819     check_builtin rdtsc    intrin.h   "__rdtsc()"
4820     check_builtin mm_empty mmintrin.h "_mm_empty()"
4821
4822     enable local_aligned_8 local_aligned_16 local_aligned_32
4823
4824     # check whether EBP is available on x86
4825     # As 'i' is stored on the stack, this program will crash
4826     # if the base pointer is used to access it because the
4827     # base pointer is cleared in the inline assembly code.
4828     check_exec_crash <<EOF && enable ebp_available
4829 volatile int i=0;
4830 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4831 return i;
4832 EOF
4833
4834     # check whether EBX is available on x86
4835     check_inline_asm ebx_available '""::"b"(0)' &&
4836         check_inline_asm ebx_available '"":::"%ebx"'
4837
4838     # check whether xmm clobbers are supported
4839     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4840
4841     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4842         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4843
4844     # check whether binutils is new enough to compile SSSE3/MMXEXT
4845     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4846     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4847
4848     if ! disabled_any asm mmx yasm; then
4849         if check_cmd $yasmexe --version; then
4850             enabled x86_64 && yasm_extra="-m amd64"
4851             yasm_debug="-g dwarf2"
4852         elif check_cmd nasm -v; then
4853             yasmexe=nasm
4854             yasm_debug="-g -F dwarf"
4855             if enabled x86_64; then
4856                 case "$objformat" in
4857                     elf)   objformat=elf64 ;;
4858                     win32) objformat=win64 ;;
4859                 esac
4860             fi
4861         fi
4862
4863         YASMFLAGS="-f $objformat $yasm_extra"
4864         enabled pic               && append YASMFLAGS "-DPIC"
4865         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4866         case "$objformat" in
4867             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4868         esac
4869
4870         check_yasm "movbe ecx, [5]" && enable yasm ||
4871             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4872         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4873         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4874         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4875         check_yasm "CPU amdnop" || disable cpunop
4876     fi
4877
4878     case "$cpu" in
4879         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4880             disable fast_clz
4881         ;;
4882     esac
4883
4884 fi
4885
4886 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4887
4888 check_ldflags -Wl,--as-needed
4889 check_ldflags -Wl,-z,noexecstack
4890
4891 if check_func dlopen; then
4892     ldl=
4893 elif check_func dlopen -ldl; then
4894     ldl=-ldl
4895 fi
4896
4897 frei0r_filter_extralibs='$ldl'
4898 frei0r_src_filter_extralibs='$ldl'
4899 ladspa_filter_extralibs='$ldl'
4900 nvenc_encoder_extralibs='$ldl'
4901
4902 if ! disabled network; then
4903     check_func getaddrinfo $network_extralibs
4904     check_func getservbyport $network_extralibs
4905     check_func inet_aton $network_extralibs
4906
4907     check_type netdb.h "struct addrinfo"
4908     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4909     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4910     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4911     check_type poll.h "struct pollfd"
4912     check_type netinet/sctp.h "struct sctp_event_subscribe"
4913     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4914     check_type netinet/in.h "struct sockaddr_in6"
4915     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4916     check_type "sys/types.h sys/socket.h" socklen_t
4917
4918     # Prefer arpa/inet.h over winsock2
4919     if check_header arpa/inet.h ; then
4920         check_func closesocket
4921     elif check_header winsock2.h ; then
4922         check_func_headers winsock2.h closesocket -lws2 &&
4923             network_extralibs="-lws2" ||
4924         { check_func_headers winsock2.h closesocket -lws2_32 &&
4925             network_extralibs="-lws2_32"; } || disable winsock2_h network
4926         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4927
4928         check_type ws2tcpip.h socklen_t
4929         check_type ws2tcpip.h "struct addrinfo"
4930         check_type ws2tcpip.h "struct group_source_req"
4931         check_type ws2tcpip.h "struct ip_mreq_source"
4932         check_type ws2tcpip.h "struct ipv6_mreq"
4933         check_type winsock2.h "struct pollfd"
4934         check_struct winsock2.h "struct sockaddr" sa_len
4935         check_type ws2tcpip.h "struct sockaddr_in6"
4936         check_type ws2tcpip.h "struct sockaddr_storage"
4937     else
4938         disable network
4939     fi
4940 fi
4941
4942 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4943 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4944 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4945 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4946 check_builtin sarestart signal.h "SA_RESTART"
4947 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4948 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
4949 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
4950
4951 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4952 check_func  ${malloc_prefix}memalign            && enable memalign
4953 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4954
4955 check_func  access
4956 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4957 check_func  fcntl
4958 check_func  fork
4959 check_func  gethrtime
4960 check_func  getopt
4961 check_func  getrusage
4962 check_func  gettimeofday
4963 check_func  isatty
4964 check_func  mach_absolute_time
4965 check_func  mkstemp
4966 check_func  mmap
4967 check_func  mprotect
4968 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4969 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4970 check_func  sched_getaffinity
4971 check_func  setrlimit
4972 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4973 check_func  strerror_r
4974 check_func  sysconf
4975 check_func  sysctl
4976 check_func  usleep
4977
4978 check_func_headers conio.h kbhit
4979 check_func_headers io.h setmode
4980 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4981 check_func_headers stdlib.h getenv
4982
4983 check_func_headers windows.h CoTaskMemFree -lole32
4984 check_func_headers windows.h GetProcessAffinityMask
4985 check_func_headers windows.h GetProcessTimes
4986 check_func_headers windows.h GetSystemTimeAsFileTime
4987 check_func_headers windows.h MapViewOfFile
4988 check_func_headers windows.h PeekNamedPipe
4989 check_func_headers windows.h SetConsoleTextAttribute
4990 check_func_headers windows.h Sleep
4991 check_func_headers windows.h VirtualAlloc
4992 check_struct windows.h "CONDITION_VARIABLE" Ptr
4993 check_func_headers glob.h glob
4994 enabled xlib &&
4995     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4996
4997 check_header direct.h
4998 check_header dlfcn.h
4999 check_header d3d11.h
5000 check_header dxva.h
5001 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5002 check_header io.h
5003 check_header libcrystalhd/libcrystalhd_if.h
5004 check_header mach/mach_time.h
5005 check_header malloc.h
5006 check_header net/udplite.h
5007 check_header poll.h
5008 check_header sys/mman.h
5009 check_header sys/param.h
5010 check_header sys/resource.h
5011 check_header sys/select.h
5012 check_header sys/time.h
5013 check_header sys/un.h
5014 check_header termios.h
5015 check_header unistd.h
5016 check_header valgrind/valgrind.h
5017 check_header vdpau/vdpau.h
5018 check_header vdpau/vdpau_x11.h
5019 check_header VideoDecodeAcceleration/VDADecoder.h
5020 check_header windows.h
5021 check_header X11/extensions/XvMClib.h
5022 check_header asm/types.h
5023
5024 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5025 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5026 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5027
5028 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5029
5030 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
5031 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5032 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
5033
5034 if ! disabled w32threads && ! enabled pthreads; then
5035     check_func_headers "windows.h process.h" _beginthreadex &&
5036         enable w32threads || disable w32threads
5037 fi
5038
5039 # check for some common methods of building with pthread support
5040 # do this before the optional library checks as some of them require pthreads
5041 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5042     enable pthreads
5043     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5044         add_cflags -pthread
5045         add_extralibs -pthread
5046     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5047         add_cflags -pthreads
5048         add_extralibs -pthreads
5049     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5050         add_cflags -ldl -pthread
5051         add_extralibs -ldl -pthread
5052     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5053         add_extralibs -lpthreadGC2
5054     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5055         :
5056     elif ! check_func pthread_join && ! check_func pthread_create; then
5057         disable pthreads
5058     fi
5059     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5060 fi
5061
5062
5063 if enabled pthreads; then
5064   check_func pthread_cancel
5065 fi
5066
5067 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5068 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5069 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5070
5071 check_lib math.h sin -lm && LIBM="-lm"
5072 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5073
5074 atan2f_args=2
5075 ldexpf_args=2
5076 powf_args=2
5077
5078 for func in $MATH_FUNCS; do
5079     eval check_mathfunc $func \${${func}_args:-1}
5080 done
5081
5082 # these are off by default, so fail if requested and not available
5083 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5084 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5085                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5086 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5087                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5088                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5089 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5090 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5091 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5092 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5093 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5094 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5095 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5096 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5097 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5098 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5099                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5100                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5101 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5102 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create
5103 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5104 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5105                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5106                                  warn "using libfdk without pkg-config"; } }
5107 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"
5108 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5109 enabled fontconfig        && enable libfontconfig
5110 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5111 enabled libfreetype       && require_libfreetype
5112 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5113 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5114 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5115                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5116                                done || die "ERROR: libgsm not found"; }
5117 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5118 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5119 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5120 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5121 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5122 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5123 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5124 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5125 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5126 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5127                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5128                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5129                                die "ERROR: libopenjpeg not found"; }
5130 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5131 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5132 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5133 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5134 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5135 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5136 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5137                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5138 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5139 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5140 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5141 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5142 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5143     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5144     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5145 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5146 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5147                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5148                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5149 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5150 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5151 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5152 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5153 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5154 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5155
5156 enabled libvpx            && {
5157     enabled libvpx_vp8_decoder && {
5158         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5159             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5160                 die "ERROR: libvpx decoder version must be >=0.9.1";
5161     }
5162     enabled libvpx_vp8_encoder && {
5163         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5164             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5165                 die "ERROR: libvpx encoder version must be >=0.9.7";
5166     }
5167     enabled libvpx_vp9_decoder && {
5168         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5169             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5170                 disable libvpx_vp9_decoder;
5171     }
5172     enabled libvpx_vp9_encoder && {
5173         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5174             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5175                 disable libvpx_vp9_encoder;
5176     }
5177     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5178         die "libvpx enabled but no supported decoders found"
5179     fi
5180 }
5181
5182 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5183 enabled libwebp           && {
5184     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5185     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5186 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5187                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5188                                  warn "using libx264 without pkg-config"; } } &&
5189                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5190                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
5191 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
5192                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5193                                die "ERROR: libx265 version must be >= 57."; }
5194 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5195 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5196 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5197 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5198 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5199                                 { ! enabled cross_compile && {
5200                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5201                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5202                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5203                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5204                                die "ERROR: mmal not found"; }
5205 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5206                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5207                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5208                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5209 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5210                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5211                                die "ERROR: openal not found"; } &&
5212                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5213                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5214 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5215                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5216                                die "ERROR: opencl not found"; } &&
5217                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5218                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5219                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5220 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5221                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5222                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5223                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5224                                die "ERROR: opengl not found."
5225                              }
5226 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5227                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5228                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5229                                die "ERROR: openssl not found"; }
5230 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5231
5232 if enabled gnutls; then
5233     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
5234     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5235 fi
5236
5237 # libdc1394 check
5238 if enabled libdc1394; then
5239     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5240         enable libdc1394_2; } ||
5241     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5242         enable libdc1394_1; } ||
5243     die "ERROR: No version of libdc1394 found "
5244 fi
5245 if ! disabled sdl; then
5246     SDL_CONFIG="${cross_prefix}sdl-config"
5247     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5248         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5249         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5250         enable sdl
5251     else
5252         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5253             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5254             sdl_libs=$("${SDL_CONFIG}" --libs)
5255             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5256             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5257             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5258             enable sdl
5259         elif enabled sdl ; then
5260             die "ERROR: SDL not found"
5261         else
5262             disable sdl
5263         fi
5264     fi
5265 fi
5266 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5267
5268 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5269     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5270     enable securetransport; }
5271
5272 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5273 enabled makeinfo \
5274     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5275     && enable makeinfo_html || disable makeinfo_html
5276 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5277 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5278 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5279 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5280
5281 check_header linux/fb.h
5282 check_header linux/videodev.h
5283 check_header linux/videodev2.h
5284 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5285
5286 check_header sys/videoio.h
5287 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5288
5289 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5290 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5291 # w32api 3.12 had it defined wrong
5292 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5293
5294 check_type "dshow.h" IBaseFilter
5295
5296 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5297 { check_header dev/bktr/ioctl_meteor.h &&
5298   check_header dev/bktr/ioctl_bt848.h; } ||
5299 { check_header machine/ioctl_meteor.h &&
5300   check_header machine/ioctl_bt848.h; } ||
5301 { check_header dev/video/meteor/ioctl_meteor.h &&
5302   check_header dev/video/bktr/ioctl_bt848.h; } ||
5303 check_header dev/ic/bt8xx.h
5304
5305 check_header sndio.h
5306 if check_struct sys/soundcard.h audio_buf_info bytes; then
5307     enable_safe sys/soundcard.h
5308 else
5309     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5310     #include <sys/soundcard.h>
5311     audio_buf_info abc;
5312 EOF
5313 fi
5314 check_header soundcard.h
5315
5316 enabled_any alsa_indev alsa_outdev &&
5317     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5318
5319 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5320     check_func jack_port_get_latency_range -ljack
5321
5322 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5323
5324 if enabled libcdio; then
5325     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5326     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5327     die "ERROR: No usable libcdio/cdparanoia found"
5328 fi
5329
5330 enabled xlib &&
5331     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5332
5333 if ! disabled libxcb; then
5334     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5335         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5336     } && disable x11grab && enable libxcb
5337
5338 if enabled libxcb; then
5339     disabled libxcb_shm || {
5340         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5341             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5342         } && check_header sys/shm.h && enable libxcb_shm; }
5343
5344     disabled libxcb_xfixes || {
5345         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5346             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5347         } && enable libxcb_xfixes; }
5348
5349     disabled libxcb_shape || {
5350         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5351             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5352         } && enable libxcb_shape; }
5353
5354     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5355     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5356 fi
5357 fi
5358
5359 if enabled x11grab; then
5360     enabled xlib || die "ERROR: Xlib not found"
5361     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5362     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5363 fi
5364
5365 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5366
5367 enabled dxva2api_h &&
5368     check_cc <<EOF && enable dxva2api_cobj
5369 #define _WIN32_WINNT 0x0600
5370 #define COBJMACROS
5371 #include <windows.h>
5372 #include <d3d9.h>
5373 #include <dxva2api.h>
5374 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5375 EOF
5376
5377 enabled vaapi &&
5378     check_lib va/va.h vaInitialize -lva ||
5379     disable vaapi
5380
5381 enabled vaapi && enabled xlib &&
5382     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5383     enable vaapi_x11
5384
5385 enabled vdpau &&
5386     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5387     disable vdpau
5388
5389 enabled vdpau && enabled xlib &&
5390     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5391     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5392     enable vdpau_x11
5393
5394 # Funny iconv installations are not unusual, so check it after all flags have been set
5395 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5396
5397 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5398
5399 # add some useful compiler flags if supported
5400 check_cflags -Wdeclaration-after-statement
5401 check_cflags -Wall
5402 check_cflags -Wdisabled-optimization
5403 check_cflags -Wpointer-arith
5404 check_cflags -Wredundant-decls
5405 check_cflags -Wwrite-strings
5406 check_cflags -Wtype-limits
5407 check_cflags -Wundef
5408 check_cflags -Wmissing-prototypes
5409 check_cflags -Wno-pointer-to-int-cast
5410 check_cflags -Wstrict-prototypes
5411 check_cflags -Wempty-body
5412 enabled extra_warnings && check_cflags -Winline
5413
5414 check_disable_warning(){
5415     warning_flag=-W${1#-Wno-}
5416     test_cflags $warning_flag && add_cflags $1
5417 }
5418
5419 check_disable_warning -Wno-parentheses
5420 check_disable_warning -Wno-switch
5421 check_disable_warning -Wno-format-zero-length
5422 check_disable_warning -Wno-pointer-sign
5423
5424 # add some linker flags
5425 check_ldflags -Wl,--warn-common
5426 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5427 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5428 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5429
5430 # add some strip flags
5431 # -wN '..@*' is more selective than -x, but not available everywhere.
5432 check_stripflags -wN \'..@*\' || check_stripflags -x
5433
5434 enabled neon_clobber_test &&
5435     check_ldflags -Wl,--wrap,avcodec_open2              \
5436                   -Wl,--wrap,avcodec_decode_audio4      \
5437                   -Wl,--wrap,avcodec_decode_video2      \
5438                   -Wl,--wrap,avcodec_decode_subtitle2   \
5439                   -Wl,--wrap,avcodec_encode_audio2      \
5440                   -Wl,--wrap,avcodec_encode_video2      \
5441                   -Wl,--wrap,avcodec_encode_subtitle    \
5442                   -Wl,--wrap,swr_convert                \
5443                   -Wl,--wrap,avresample_convert ||
5444     disable neon_clobber_test
5445
5446 enabled xmm_clobber_test &&
5447     check_ldflags -Wl,--wrap,avcodec_open2              \
5448                   -Wl,--wrap,avcodec_decode_audio4      \
5449                   -Wl,--wrap,avcodec_decode_video2      \
5450                   -Wl,--wrap,avcodec_decode_subtitle2   \
5451                   -Wl,--wrap,avcodec_encode_audio2      \
5452                   -Wl,--wrap,avcodec_encode_video       \
5453                   -Wl,--wrap,avcodec_encode_video2      \
5454                   -Wl,--wrap,avcodec_encode_subtitle    \
5455                   -Wl,--wrap,swr_convert                \
5456                   -Wl,--wrap,avresample_convert         \
5457                   -Wl,--wrap,sws_scale ||
5458     disable xmm_clobber_test
5459
5460 echo "X{};" > $TMPV
5461 if test_ldflags -Wl,--version-script,$TMPV; then
5462     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5463     check_cc <<EOF && enable symver_asm_label
5464 void ff_foo(void) __asm__ ("av_foo@VERSION");
5465 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5466 EOF
5467     check_cc <<EOF && enable symver_gnu_asm
5468 __asm__(".symver ff_foo,av_foo@VERSION");
5469 void ff_foo(void) {}
5470 EOF
5471 fi
5472
5473 if [ -z "$optflags" ]; then
5474     if enabled small; then
5475         optflags=$cflags_size
5476     elif enabled optimizations; then
5477         optflags=$cflags_speed
5478     else
5479         optflags=$cflags_noopt
5480     fi
5481 fi
5482
5483 check_optflags(){
5484     check_cflags "$@"
5485     enabled lto && check_ldflags "$@"
5486 }
5487
5488
5489 if enabled lto; then
5490     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5491     check_cflags  -flto
5492     check_ldflags -flto $cpuflags
5493     disable inline_asm_direct_symbol_refs
5494 fi
5495
5496 check_optflags $optflags
5497 check_optflags -fno-math-errno
5498 check_optflags -fno-signed-zeros
5499
5500 enabled ftrapv && check_cflags -ftrapv
5501
5502 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5503 int x;
5504 EOF
5505
5506
5507 if enabled icc; then
5508     # Just warnings, no remarks
5509     check_cflags -w1
5510     # -wd: Disable following warnings
5511     # 144, 167, 556: -Wno-pointer-sign
5512     # 188: enumerated type mixed with another type
5513     # 1292: attribute "foo" ignored
5514     # 1419: external declaration in primary source file
5515     # 10006: ignoring unknown option -fno-signed-zeros
5516     # 10148: ignoring unknown option -Wno-parentheses
5517     # 10156: ignoring option '-W'; no argument required
5518     # 13200: No EMMS instruction before call to function
5519     # 13203: No EMMS instruction before return from function
5520     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5521     # 11030: Warning unknown option --as-needed
5522     # 10156: ignoring option '-export'; no argument required
5523     check_ldflags -wd10156,11030
5524     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5525     enable ebp_available
5526     # The test above does not test linking
5527     enabled lto && disable symver_asm_label
5528     if enabled x86_32; then
5529         icc_version=$($cc -dumpversion)
5530         test ${icc_version%%.*} -ge 11 &&
5531             check_cflags -falign-stack=maintain-16-byte ||
5532             disable aligned_stack
5533     fi
5534 elif enabled ccc; then
5535     # disable some annoying warnings
5536     add_cflags -msg_disable bitnotint
5537     add_cflags -msg_disable mixfuncvoid
5538     add_cflags -msg_disable nonstandcast
5539     add_cflags -msg_disable unsupieee
5540 elif enabled gcc; then
5541     check_optflags -fno-tree-vectorize
5542     check_cflags -Werror=format-security
5543     check_cflags -Werror=implicit-function-declaration
5544     check_cflags -Werror=missing-prototypes
5545     check_cflags -Werror=return-type
5546     check_cflags -Werror=vla
5547     check_cflags -Wformat
5548     check_cflags -fdiagnostics-color=auto
5549     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5550 elif enabled llvm_gcc; then
5551     check_cflags -mllvm -stack-alignment=16
5552 elif enabled clang; then
5553     check_cflags -mllvm -stack-alignment=16
5554     check_cflags -Qunused-arguments
5555     check_cflags -Werror=implicit-function-declaration
5556     check_cflags -Werror=missing-prototypes
5557     check_cflags -Werror=return-type
5558 elif enabled cparser; then
5559     add_cflags -Wno-missing-variable-declarations
5560     add_cflags -Wno-empty-statement
5561 elif enabled armcc; then
5562     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5563     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5564     # 2523: use of inline assembly is deprecated
5565     add_cflags -W${armcc_opt},--diag_suppress=2523
5566     add_cflags -W${armcc_opt},--diag_suppress=1207
5567     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5568     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5569     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5570     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5571 elif enabled tms470; then
5572     add_cflags -pds=824 -pds=837
5573     disable inline_asm
5574 elif enabled pathscale; then
5575     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5576 elif enabled_any msvc icl; then
5577     enabled x86_32 && disable aligned_stack
5578     enabled_all x86_32 debug && add_cflags -Oy-
5579     enabled debug && add_ldflags -debug
5580     enable pragma_deprecated
5581     if enabled icl; then
5582         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5583         # (correctly) on icl 13.x.
5584         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5585             add_cflags -Qansi-alias
5586         # Some inline asm is not compilable in debug
5587         if enabled debug; then
5588             disable ebp_available
5589             disable ebx_available
5590         fi
5591     fi
5592     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5593     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5594 fi
5595
5596 case $as_type in
5597     clang)
5598         add_asflags -Qunused-arguments
5599     ;;
5600 esac
5601
5602 case $ld_type in
5603     clang)
5604         check_ldflags -Qunused-arguments
5605     ;;
5606 esac
5607
5608 case $target_os in
5609     osf1)
5610         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5611     ;;
5612     plan9)
5613         add_cppflags -Dmain=plan9_main
5614     ;;
5615 esac
5616
5617 enable frame_thread_encoder
5618
5619 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5620
5621 check_deps $CONFIG_LIST       \
5622            $CONFIG_EXTRA      \
5623            $HAVE_LIST         \
5624            $ALL_COMPONENTS    \
5625
5626 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"
5627
5628
5629 if test $target_os = "haiku"; then
5630     disable memalign
5631     disable posix_memalign
5632 fi
5633
5634 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5635     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5636     enable dxva2_lib
5637
5638 ! enabled_any memalign posix_memalign aligned_malloc &&
5639     enabled simd_align_16 && enable memalign_hack
5640
5641 # add_dep lib dep
5642 # -> enable ${lib}_deps_${dep}
5643 # -> add $dep to ${lib}_deps only once
5644 add_dep() {
5645     lib=$1
5646     dep=$2
5647     enabled "${lib}_deps_${dep}" && return 0
5648     enable  "${lib}_deps_${dep}"
5649     prepend "${lib}_deps" $dep
5650 }
5651
5652 # merge deps lib components
5653 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5654 merge_deps() {
5655     lib=$1
5656     shift
5657     for comp in $*; do
5658         enabled $comp || continue
5659         eval "dep=\"\$${comp}_deps\""
5660         for d in $dep; do
5661             add_dep $lib $d
5662         done
5663     done
5664 }
5665
5666 merge_deps libavfilter $FILTER_LIST
5667
5668 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5669
5670 for thread in $THREADS_LIST; do
5671     if enabled $thread; then
5672         test -n "$thread_type" &&
5673             die "ERROR: Only one thread type must be selected." ||
5674             thread_type="$thread"
5675     fi
5676 done
5677
5678 enabled zlib && add_cppflags -DZLIB_CONST
5679
5680 # conditional library dependencies, in linking order
5681 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5682 enabled aresample_filter    && prepend avfilter_deps "swresample"
5683 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5684 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5685 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5686 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5687 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5688 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5689 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5690 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5691 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5692 enabled pan_filter          && prepend avfilter_deps "swresample"
5693 enabled pp_filter           && prepend avfilter_deps "postproc"
5694 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5695 enabled resample_filter && prepend avfilter_deps "avresample"
5696 enabled sab_filter          && prepend avfilter_deps "swscale"
5697 enabled scale_filter    && prepend avfilter_deps "swscale"
5698 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5699 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5700 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5701 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5702
5703 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5704
5705 enabled opus_decoder    && prepend avcodec_deps "swresample"
5706
5707 expand_deps(){
5708     lib_deps=${1}_deps
5709     eval "deps=\$$lib_deps"
5710     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5711     unique $lib_deps
5712 }
5713
5714 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5715 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5716
5717 map 'expand_deps $v' $LIBRARY_LIST
5718
5719 echo "install prefix            $prefix"
5720 echo "source path               $source_path"
5721 echo "C compiler                $cc"
5722 echo "C library                 $libc_type"
5723 if test "$host_cc" != "$cc"; then
5724     echo "host C compiler           $host_cc"
5725     echo "host C library            $host_libc_type"
5726 fi
5727 echo "ARCH                      $arch ($cpu)"
5728 if test "$build_suffix" != ""; then
5729     echo "build suffix              $build_suffix"
5730 fi
5731 if test "$progs_suffix" != ""; then
5732     echo "progs suffix              $progs_suffix"
5733 fi
5734 if test "$extra_version" != ""; then
5735     echo "version string suffix     $extra_version"
5736 fi
5737 echo "big-endian                ${bigendian-no}"
5738 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5739 if enabled x86; then
5740     echo "${yasmexe}                      ${yasm-no}"
5741     echo "MMX enabled               ${mmx-no}"
5742     echo "MMXEXT enabled            ${mmxext-no}"
5743     echo "3DNow! enabled            ${amd3dnow-no}"
5744     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5745     echo "SSE enabled               ${sse-no}"
5746     echo "SSSE3 enabled             ${ssse3-no}"
5747     echo "AVX enabled               ${avx-no}"
5748     echo "XOP enabled               ${xop-no}"
5749     echo "FMA3 enabled              ${fma3-no}"
5750     echo "FMA4 enabled              ${fma4-no}"
5751     echo "i686 features enabled     ${i686-no}"
5752     echo "CMOV is fast              ${fast_cmov-no}"
5753     echo "EBX available             ${ebx_available-no}"
5754     echo "EBP available             ${ebp_available-no}"
5755 fi
5756 if enabled aarch64; then
5757     echo "NEON enabled              ${neon-no}"
5758     echo "VFP enabled               ${vfp-no}"
5759 fi
5760 if enabled arm; then
5761     echo "ARMv5TE enabled           ${armv5te-no}"
5762     echo "ARMv6 enabled             ${armv6-no}"
5763     echo "ARMv6T2 enabled           ${armv6t2-no}"
5764     echo "VFP enabled               ${vfp-no}"
5765     echo "NEON enabled              ${neon-no}"
5766     echo "THUMB enabled             ${thumb-no}"
5767 fi
5768 if enabled mips; then
5769     echo "MIPS FPU enabled          ${mipsfpu-no}"
5770     echo "MIPS32R5 enabled          ${mips32r5-no}"
5771     echo "MIPS64R6 enabled          ${mips64r6-no}"
5772     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5773     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5774     echo "MIPS MSA enabled          ${msa-no}"
5775     echo "LOONGSON3 enabled         ${loongson3-no}"
5776 fi
5777 if enabled ppc; then
5778     echo "AltiVec enabled           ${altivec-no}"
5779     echo "VSX enabled               ${vsx-no}"
5780     echo "POWER8 enabled            ${power8-no}"
5781     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5782     echo "dcbzl available           ${dcbzl-no}"
5783 fi
5784 echo "debug symbols             ${debug-no}"
5785 echo "strip symbols             ${stripping-no}"
5786 echo "optimize for size         ${small-no}"
5787 echo "optimizations             ${optimizations-no}"
5788 echo "static                    ${static-no}"
5789 echo "shared                    ${shared-no}"
5790 echo "postprocessing support    ${postproc-no}"
5791 echo "new filter support        ${avfilter-no}"
5792 echo "network support           ${network-no}"
5793 echo "threading support         ${thread_type-no}"
5794 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5795 echo "SDL support               ${sdl-no}"
5796 echo "opencl enabled            ${opencl-no}"
5797 echo "texi2html enabled         ${texi2html-no}"
5798 echo "perl enabled              ${perl-no}"
5799 echo "pod2man enabled           ${pod2man-no}"
5800 echo "makeinfo enabled          ${makeinfo-no}"
5801 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5802 test -n "$random_seed" &&
5803     echo "random seed               ${random_seed}"
5804 echo
5805
5806 echo "External libraries:"
5807 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5808 echo
5809
5810 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5811     echo "Enabled ${type}s:"
5812     eval list=\$$(toupper $type)_LIST
5813     print_enabled '_*' $list | print_3_columns
5814     echo
5815 done
5816
5817 license="LGPL version 2.1 or later"
5818 if enabled nonfree; then
5819     license="nonfree and unredistributable"
5820 elif enabled gplv3; then
5821     license="GPL version 3 or later"
5822 elif enabled lgplv3; then
5823     license="LGPL version 3 or later"
5824 elif enabled gpl; then
5825     license="GPL version 2 or later"
5826 fi
5827
5828 echo "License: $license"
5829
5830 echo "Creating config.mak, config.h, and doc/config.texi..."
5831
5832 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5833
5834 enabled stripping || strip="echo skipping strip"
5835
5836 config_files="$TMPH config.mak doc/config.texi"
5837
5838 cat > config.mak <<EOF
5839 # Automatically generated by configure - do not modify!
5840 ifndef FFMPEG_CONFIG_MAK
5841 FFMPEG_CONFIG_MAK=1
5842 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5843 prefix=$prefix
5844 LIBDIR=\$(DESTDIR)$libdir
5845 SHLIBDIR=\$(DESTDIR)$shlibdir
5846 INCDIR=\$(DESTDIR)$incdir
5847 BINDIR=\$(DESTDIR)$bindir
5848 DATADIR=\$(DESTDIR)$datadir
5849 DOCDIR=\$(DESTDIR)$docdir
5850 MANDIR=\$(DESTDIR)$mandir
5851 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
5852 SRC_PATH=$source_path
5853 ifndef MAIN_MAKEFILE
5854 SRC_PATH:=\$(SRC_PATH:.%=..%)
5855 endif
5856 CC_IDENT=$cc_ident
5857 ARCH=$arch
5858 INTRINSICS=$intrinsics
5859 CC=$cc
5860 CXX=$cxx
5861 AS=$as
5862 LD=$ld
5863 DEPCC=$dep_cc
5864 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5865 DEPAS=$as
5866 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5867 YASM=$yasmexe
5868 DEPYASM=$yasmexe
5869 AR=$ar
5870 ARFLAGS=$arflags
5871 AR_O=$ar_o
5872 RANLIB=$ranlib
5873 STRIP=$strip
5874 CP=cp -p
5875 LN_S=$ln_s
5876 CPPFLAGS=$CPPFLAGS
5877 CFLAGS=$CFLAGS
5878 CXXFLAGS=$CXXFLAGS
5879 ASFLAGS=$ASFLAGS
5880 AS_C=$AS_C
5881 AS_O=$AS_O
5882 CC_C=$CC_C
5883 CC_E=$CC_E
5884 CC_O=$CC_O
5885 CXX_C=$CXX_C
5886 CXX_O=$CXX_O
5887 LD_O=$LD_O
5888 LD_LIB=$LD_LIB
5889 LD_PATH=$LD_PATH
5890 DLLTOOL=$dlltool
5891 WINDRES=$windres
5892 DEPWINDRES=$dep_cc
5893 DOXYGEN=$doxygen
5894 LDFLAGS=$LDFLAGS
5895 LDEXEFLAGS=$LDEXEFLAGS
5896 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5897 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5898 YASMFLAGS=$YASMFLAGS
5899 BUILDSUF=$build_suffix
5900 PROGSSUF=$progs_suffix
5901 FULLNAME=$FULLNAME
5902 LIBPREF=$LIBPREF
5903 LIBSUF=$LIBSUF
5904 LIBNAME=$LIBNAME
5905 SLIBPREF=$SLIBPREF
5906 SLIBSUF=$SLIBSUF
5907 EXESUF=$EXESUF
5908 EXTRA_VERSION=$extra_version
5909 CCDEP=$CCDEP
5910 CXXDEP=$CXXDEP
5911 CCDEP_FLAGS=$CCDEP_FLAGS
5912 ASDEP=$ASDEP
5913 ASDEP_FLAGS=$ASDEP_FLAGS
5914 CC_DEPFLAGS=$CC_DEPFLAGS
5915 AS_DEPFLAGS=$AS_DEPFLAGS
5916 HOSTCC=$host_cc
5917 HOSTLD=$host_ld
5918 HOSTCFLAGS=$host_cflags
5919 HOSTCPPFLAGS=$host_cppflags
5920 HOSTEXESUF=$HOSTEXESUF
5921 HOSTLDFLAGS=$host_ldflags
5922 HOSTLIBS=$host_libs
5923 DEPHOSTCC=$host_cc
5924 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5925 HOSTCCDEP=$HOSTCCDEP
5926 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5927 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5928 HOSTCC_C=$HOSTCC_C
5929 HOSTCC_O=$HOSTCC_O
5930 HOSTLD_O=$HOSTLD_O
5931 TARGET_EXEC=$target_exec $target_exec_args
5932 TARGET_PATH=$target_path
5933 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5934 CFLAGS-ffplay=$sdl_cflags
5935 ZLIB=$($ldflags_filter -lz)
5936 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5937 EXTRALIBS=$extralibs
5938 COMPAT_OBJS=$compat_objs
5939 EXEOBJS=$exeobjs
5940 INSTALL=$install
5941 LIBTARGET=${LIBTARGET}
5942 SLIBNAME=${SLIBNAME}
5943 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5944 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5945 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5946 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5947 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5948 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5949 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5950 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5951 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5952 NOREDZONE_FLAGS=$noredzone_flags
5953 EOF
5954
5955 get_version(){
5956     lcname=lib${1}
5957     name=$(toupper $lcname)
5958     file=$source_path/$lcname/version.h
5959     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5960     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5961     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5962     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5963     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5964     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5965 }
5966
5967 map 'get_version $v' $LIBRARY_LIST
5968
5969 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5970
5971 print_program_libs(){
5972     eval "program_libs=\$${1}_libs"
5973     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5974 }
5975
5976 map 'print_program_libs $v' $PROGRAM_LIST
5977
5978 cat > $TMPH <<EOF
5979 /* Automatically generated by configure - do not modify! */
5980 #ifndef FFMPEG_CONFIG_H
5981 #define FFMPEG_CONFIG_H
5982 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5983 #define FFMPEG_LICENSE "$(c_escape $license)"
5984 #define CONFIG_THIS_YEAR 2015
5985 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5986 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5987 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5988 #define av_restrict $_restrict
5989 #define EXTERN_PREFIX "${extern_prefix}"
5990 #define EXTERN_ASM ${extern_prefix}
5991 #define BUILDSUF "$build_suffix"
5992 #define SLIBSUF "$SLIBSUF"
5993 #define HAVE_MMX2 HAVE_MMXEXT
5994 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5995 EOF
5996
5997 test -n "$assert_level" &&
5998     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5999
6000 test -n "$malloc_prefix" &&
6001     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6002
6003 if enabled yasm; then
6004     append config_files $TMPASM
6005     printf '' >$TMPASM
6006 fi
6007
6008 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6009
6010
6011 mkdir -p doc
6012 mkdir -p tests
6013 echo "@c auto-generated by configure" > doc/config.texi
6014
6015 print_config ARCH_   "$config_files" $ARCH_LIST
6016 print_config HAVE_   "$config_files" $HAVE_LIST
6017 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6018                                      $CONFIG_EXTRA      \
6019                                      $ALL_COMPONENTS    \
6020
6021 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6022 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6023
6024 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6025 cp_if_changed $TMPH config.h
6026 touch .config
6027
6028 enabled yasm && cp_if_changed $TMPASM config.asm
6029
6030 cat > $TMPH <<EOF
6031 /* Generated by ffconf */
6032 #ifndef AVUTIL_AVCONFIG_H
6033 #define AVUTIL_AVCONFIG_H
6034 EOF
6035
6036 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6037
6038 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6039
6040 cp_if_changed $TMPH libavutil/avconfig.h
6041
6042 if test -n "$WARNINGS"; then
6043     printf "\n$WARNINGS"
6044     enabled fatal_warnings && exit 1
6045 fi
6046
6047 # build pkg-config files
6048
6049 lib_version(){
6050     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6051 }
6052
6053 pkgconfig_generate(){
6054     name=$1
6055     shortname=${name#lib}${build_suffix}
6056     comment=$2
6057     version=$3
6058     libs=$4
6059     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6060     requires=${requires%, }
6061     enabled ${name#lib} || return 0
6062     mkdir -p $name
6063     cat <<EOF > $name/$name${build_suffix}.pc
6064 prefix=$prefix
6065 exec_prefix=\${prefix}
6066 libdir=$libdir
6067 includedir=$incdir
6068
6069 Name: $name
6070 Description: $comment
6071 Version: $version
6072 Requires: $(enabled shared || echo $requires)
6073 Requires.private: $(enabled shared && echo $requires)
6074 Conflicts:
6075 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6076 Libs.private: $(enabled shared && echo $libs)
6077 Cflags: -I\${includedir}
6078 EOF
6079
6080 mkdir -p doc/examples/pc-uninstalled
6081 includedir=${source_path}
6082 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6083     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6084 prefix=
6085 exec_prefix=
6086 libdir=\${pcfiledir}/../../../$name
6087 includedir=${includedir}
6088
6089 Name: $name
6090 Description: $comment
6091 Version: $version
6092 Requires: $requires
6093 Conflicts:
6094 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6095 Cflags: -I\${includedir}
6096 EOF
6097 }
6098
6099 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6100 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6101 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6102 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6103 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6104 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6105 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6106 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6107 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"