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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-avutil         disable libavutil build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU code [autodetect]
 158   --enable-videotoolbox    enable VideoToolbox code [autodetect]
 159
 160 Individual component options:
 161   --disable-everything     disable all components listed below
 162   --disable-encoder=NAME   disable encoder NAME
 163   --enable-encoder=NAME    enable encoder NAME
 164   --disable-encoders       disable all encoders
 165   --disable-decoder=NAME   disable decoder NAME
 166   --enable-decoder=NAME    enable decoder NAME
 167   --disable-decoders       disable all decoders
 168   --disable-hwaccel=NAME   disable hwaccel NAME
 169   --enable-hwaccel=NAME    enable hwaccel NAME
 170   --disable-hwaccels       disable all hwaccels
 171   --disable-muxer=NAME     disable muxer NAME
 172   --enable-muxer=NAME      enable muxer NAME
 173   --disable-muxers         disable all muxers
 174   --disable-demuxer=NAME   disable demuxer NAME
 175   --enable-demuxer=NAME    enable demuxer NAME
 176   --disable-demuxers       disable all demuxers
 177   --enable-parser=NAME     enable parser NAME
 178   --disable-parser=NAME    disable parser NAME
 179   --disable-parsers        disable all parsers
 180   --enable-bsf=NAME        enable bitstream filter NAME
 181   --disable-bsf=NAME       disable bitstream filter NAME
 182   --disable-bsfs           disable all bitstream filters
 183   --enable-protocol=NAME   enable protocol NAME
 184   --disable-protocol=NAME  disable protocol NAME
 185   --disable-protocols      disable all protocols
 186   --enable-indev=NAME      enable input device NAME
 187   --disable-indev=NAME     disable input device NAME
 188   --disable-indevs         disable input devices
 189   --enable-outdev=NAME     enable output device NAME
 190   --disable-outdev=NAME    disable output device NAME
 191   --disable-outdevs        disable output devices
 192   --disable-devices        disable all devices
 193   --enable-filter=NAME     enable filter NAME
 194   --disable-filter=NAME    disable filter NAME
 195   --disable-filters        disable all filters
 196
 197 External library support:
 198   --enable-avisynth        enable reading of AviSynth script files [no]
 199   --disable-bzlib          disable bzlib [autodetect]
 200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 201   --enable-frei0r          enable frei0r video filtering [no]
 202   --enable-gnutls          enable gnutls, needed for https support
 203                            if openssl is not used [no]
 204   --disable-iconv          disable iconv [autodetect]
 205   --enable-ladspa          enable LADSPA audio filtering [no]
 206   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 207   --enable-libass          enable libass subtitles rendering,
 208                            needed for subtitles and ass filter [no]
 209   --enable-libbluray       enable BluRay reading using libbluray [no]
 210   --enable-libbs2b         enable bs2b DSP library [no]
 211   --enable-libcaca         enable textual display using libcaca [no]
 212   --enable-libcelt         enable CELT decoding via libcelt [no]
 213   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 214   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 215                            and libraw1394 [no]
 216   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 217   --enable-libfaac         enable AAC encoding via libfaac [no]
 218   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 219   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 220   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 221   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 222   --enable-libgme          enable Game Music Emu via libgme [no]
 223   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 224   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 225   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 226   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 227   --enable-libmfx          enable HW acceleration through libmfx
 228   --enable-libmodplug      enable ModPlug via libmodplug [no]
 229   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 230   --enable-libnut          enable NUT (de)muxing via libnut,
 231                            native (de)muxer exists [no]
 232   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 233   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 234   --enable-libopencv       enable video filtering via libopencv [no]
 235   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 236   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 237   --enable-libopus         enable Opus de/encoding via libopus [no]
 238   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 239   --enable-libquvi         enable quvi input via libquvi [no]
 240   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 241   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 242   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 243   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 244   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 245   --enable-libsoxr         enable Include libsoxr resampling [no]
 246   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 247   --enable-libssh          enable SFTP protocol via libssh [no]
 248   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 249   --enable-libtheora       enable Theora encoding via libtheora [no]
 250   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 251   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 252   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 253   --enable-libvidstab      enable video stabilization using vid.stab [no]
 254   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 255   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 256   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 257                            native implementation exists [no]
 258   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 259   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 260   --enable-libwebp         enable WebP encoding via libwebp [no]
 261   --enable-libx264         enable H.264 encoding via x264 [no]
 262   --enable-libx265         enable HEVC encoding via x265 [no]
 263   --enable-libxavs         enable AVS encoding via xavs [no]
 264   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 265   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 266   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 267   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 268   --enable-libxvid         enable Xvid encoding via xvidcore,
 269                            native MPEG-4/Xvid encoder exists [no]
 270   --enable-libzmq          enable message passing via libzmq [no]
 271   --enable-libzvbi         enable teletext support via libzvbi [no]
 272   --disable-lzma           disable lzma [autodetect]
 273   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 274   --enable-mmal            enable decoding via MMAL [no]
 275   --enable-nvenc           enable NVIDIA NVENC support [no]
 276   --enable-openal          enable OpenAL 1.1 capture support [no]
 277   --enable-opencl          enable OpenCL code
 278   --enable-opengl          enable OpenGL rendering [no]
 279   --enable-openssl         enable openssl, needed for https support
 280                            if gnutls is not used [no]
 281   --disable-sdl            disable sdl [autodetect]
 282   --disable-securetransport disable Secure Transport, needed for TLS support
 283                            on OSX if openssl and gnutls are not used [autodetect]
 284   --enable-x11grab         enable X11 grabbing (legacy) [no]
 285   --disable-xlib           disable xlib [autodetect]
 286   --disable-zlib           disable zlib [autodetect]
 287
 288 Toolchain options:
 289   --arch=ARCH              select architecture [$arch]
 290   --cpu=CPU                select the minimum required CPU (affects
 291                            instruction selection, may crash on older CPUs)
 292   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 293   --progs-suffix=SUFFIX    program name suffix []
 294   --enable-cross-compile   assume a cross-compiler is used
 295   --sysroot=PATH           root of cross-build tree
 296   --sysinclude=PATH        location of cross-build system headers
 297   --target-os=OS           compiler targets OS [$target_os]
 298   --target-exec=CMD        command to run executables on target
 299   --target-path=DIR        path to view of build directory on target
 300   --target-samples=DIR     path to samples directory on target
 301   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 302   --toolchain=NAME         set tool defaults according to NAME
 303   --nm=NM                  use nm tool NM [$nm_default]
 304   --ar=AR                  use archive tool AR [$ar_default]
 305   --as=AS                  use assembler AS [$as_default]
 306   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 307   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 308   --cc=CC                  use C compiler CC [$cc_default]
 309   --cxx=CXX                use C compiler CXX [$cxx_default]
 310   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 311   --ld=LD                  use linker LD [$ld_default]
 312   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 313   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 314   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 315   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 316   --host-cc=HOSTCC         use host C compiler HOSTCC
 317   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 318   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 319   --host-ld=HOSTLD         use host linker HOSTLD
 320   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 321   --host-libs=HLIBS        use libs HLIBS when linking for host
 322   --host-os=OS             compiler host OS [$target_os]
 323   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 324   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 325   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 326   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 327   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 328   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 329   --extra-version=STRING   version string suffix []
 330   --optflags=OPTFLAGS      override optimization-related compiler flags
 331   --build-suffix=SUFFIX    library name suffix []
 332   --enable-pic             build position-independent code
 333   --enable-thumb           compile for Thumb instruction set
 334   --enable-lto             use link-time optimization
 335   --env="ENV=override"     override the environment variables
 336
 337 Advanced options (experts only):
 338   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 339   --disable-symver         disable symbol versioning
 340   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 341   --disable-safe-bitstream-reader
 342                            disable buffer boundary checking in bitreaders
 343                            (faster, but may crash)
 344   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 345   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 346
 347 Optimization options (experts only):
 348   --disable-asm            disable all assembly optimizations
 349   --disable-altivec        disable AltiVec optimizations
 350   --disable-vsx            disable VSX optimizations
 351   --disable-power8         disable POWER8 optimizations
 352   --disable-amd3dnow       disable 3DNow! optimizations
 353   --disable-amd3dnowext    disable 3DNow! extended optimizations
 354   --disable-mmx            disable MMX optimizations
 355   --disable-mmxext         disable MMXEXT optimizations
 356   --disable-sse            disable SSE optimizations
 357   --disable-sse2           disable SSE2 optimizations
 358   --disable-sse3           disable SSE3 optimizations
 359   --disable-ssse3          disable SSSE3 optimizations
 360   --disable-sse4           disable SSE4 optimizations
 361   --disable-sse42          disable SSE4.2 optimizations
 362   --disable-avx            disable AVX optimizations
 363   --disable-xop            disable XOP optimizations
 364   --disable-fma3           disable FMA3 optimizations
 365   --disable-fma4           disable FMA4 optimizations
 366   --disable-avx2           disable AVX2 optimizations
 367   --disable-armv5te        disable armv5te optimizations
 368   --disable-armv6          disable armv6 optimizations
 369   --disable-armv6t2        disable armv6t2 optimizations
 370   --disable-vfp            disable VFP optimizations
 371   --disable-neon           disable NEON optimizations
 372   --disable-inline-asm     disable use of inline assembly
 373   --disable-yasm           disable use of nasm/yasm assembly
 374   --disable-mips32r5       disable MIPS32R5 optimizations
 375   --disable-mips64r6       disable MIPS64R6 optimizations
 376   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 377   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 378   --disable-msa            disable MSA optimizations
 379   --disable-mipsfpu        disable floating point MIPS optimizations
 380   --disable-mmi            disable Loongson SIMD optimizations
 381   --disable-fast-unaligned consider unaligned accesses slow
 382
 383 Developer options (useful when working on FFmpeg itself):
 384   --disable-debug          disable debugging symbols
 385   --enable-debug=LEVEL     set the debug level [$debuglevel]
 386   --disable-optimizations  disable compiler optimizations
 387   --enable-extra-warnings  enable more compiler warnings
 388   --disable-stripping      disable stripping of executables and shared libraries
 389   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 390                            2 causes a slowdown at runtime.
 391   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 392   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 393                            leaks and errors, using the specified valgrind binary.
 394                            Cannot be combined with --target-exec
 395   --enable-ftrapv          Trap arithmetic overflows
 396   --samples=PATH           location of test samples for FATE, if not set use
 397                            \$FATE_SAMPLES at make invocation time.
 398   --enable-neon-clobber-test check NEON registers for clobbering (should be
 399                            used only for debugging purposes)
 400   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 401                            should be used only for debugging purposes)
 402   --enable-random          randomly enable/disable components
 403   --disable-random
 404   --enable-random=LIST     randomly enable/disable specific components or
 405   --disable-random=LIST    component groups. LIST is a comma-separated list
 406                            of NAME[:PROB] entries where NAME is a component
 407                            (group) and PROB the probability associated with
 408                            NAME (default 0.5).
 409   --random-seed=VALUE      seed value for --enable/disable-random
 410   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 411                            (only applies to --disable-optimizations builds)
 412
 413 NOTE: Object files are built at the place where configure is launched.
 414 EOF
 415   exit 0
 416 }
 417
 418 quotes='""'
 419
 420 log(){
 421     echo "$@" >> $logfile
 422 }
 423
 424 log_file(){
 425     log BEGIN $1
 426     pr -n -t $1 >> $logfile
 427     log END $1
 428 }
 429
 430 echolog(){
 431     log "$@"
 432     echo "$@"
 433 }
 434
 435 warn(){
 436     log "WARNING: $*"
 437     WARNINGS="${WARNINGS}WARNING: $*\n"
 438 }
 439
 440 die(){
 441     echolog "$@"
 442     cat <<EOF
 443
 444 If you think configure made a mistake, make sure you are using the latest
 445 version from Git.  If the latest version fails, report the problem to the
 446 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 447 EOF
 448     if disabled logging; then
 449         cat <<EOF
 450 Rerun configure with logging enabled (do not use --disable-logging), and
 451 include the log this produces with your report.
 452 EOF
 453     else
 454         cat <<EOF
 455 Include the log file "$logfile" produced by configure as this will help
 456 solve the problem.
 457 EOF
 458     fi
 459     exit 1
 460 }
 461
 462 # Avoid locale weirdness, besides we really just want to translate ASCII.
 463 toupper(){
 464     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 465 }
 466
 467 tolower(){
 468     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 469 }
 470
 471 c_escape(){
 472     echo "$*" | sed 's/["\\]/\\\0/g'
 473 }
 474
 475 sh_quote(){
 476     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 477     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 478     echo "$v"
 479 }
 480
 481 cleanws(){
 482     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 483 }
 484
 485 filter(){
 486     pat=$1
 487     shift
 488     for v; do
 489         eval "case $v in $pat) echo $v ;; esac"
 490     done
 491 }
 492
 493 filter_out(){
 494     pat=$1
 495     shift
 496     for v; do
 497         eval "case $v in $pat) ;; *) echo $v ;; esac"
 498     done
 499 }
 500
 501 map(){
 502     m=$1
 503     shift
 504     for v; do eval $m; done
 505 }
 506
 507 add_suffix(){
 508     suffix=$1
 509     shift
 510     for v; do echo ${v}${suffix}; done
 511 }
 512
 513 set_all(){
 514     value=$1
 515     shift
 516     for var in $*; do
 517         eval $var=$value
 518     done
 519 }
 520
 521 set_weak(){
 522     value=$1
 523     shift
 524     for var; do
 525         eval : \${$var:=$value}
 526     done
 527 }
 528
 529 sanitize_var_name(){
 530     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 531 }
 532
 533 set_safe(){
 534     var=$1
 535     shift
 536     eval $(sanitize_var_name "$var")='$*'
 537 }
 538
 539 get_safe(){
 540     eval echo \$$(sanitize_var_name "$1")
 541 }
 542
 543 pushvar(){
 544     for pvar in $*; do
 545         eval level=\${${pvar}_level:=0}
 546         eval ${pvar}_${level}="\$$pvar"
 547         eval ${pvar}_level=$(($level+1))
 548     done
 549 }
 550
 551 popvar(){
 552     for pvar in $*; do
 553         eval level=\${${pvar}_level:-0}
 554         test $level = 0 && continue
 555         eval level=$(($level-1))
 556         eval $pvar="\${${pvar}_${level}}"
 557         eval ${pvar}_level=$level
 558         eval unset ${pvar}_${level}
 559     done
 560 }
 561
 562 enable(){
 563     set_all yes $*
 564 }
 565
 566 disable(){
 567     set_all no $*
 568 }
 569
 570 enable_weak(){
 571     set_weak yes $*
 572 }
 573
 574 disable_weak(){
 575     set_weak no $*
 576 }
 577
 578 enable_safe(){
 579     for var; do
 580         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 581     done
 582 }
 583
 584 disable_safe(){
 585     for var; do
 586         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 587     done
 588 }
 589
 590 do_enable_deep(){
 591     for var; do
 592         enabled $var && continue
 593         eval sel="\$${var}_select"
 594         eval sgs="\$${var}_suggest"
 595         pushvar var sgs
 596         enable_deep $sel
 597         popvar sgs
 598         enable_deep_weak $sgs
 599         popvar var
 600     done
 601 }
 602
 603 enable_deep(){
 604     do_enable_deep $*
 605     enable $*
 606 }
 607
 608 enable_deep_weak(){
 609     for var; do
 610         disabled $var && continue
 611         pushvar var
 612         do_enable_deep $var
 613         popvar var
 614         enable_weak $var
 615     done
 616 }
 617
 618 enabled(){
 619     test "${1#!}" = "$1" && op== || op=!=
 620     eval test "x\$${1#!}" $op "xyes"
 621 }
 622
 623 disabled(){
 624     test "${1#!}" = "$1" && op== || op=!=
 625     eval test "x\$${1#!}" $op "xno"
 626 }
 627
 628 enabled_all(){
 629     for opt; do
 630         enabled $opt || return 1
 631     done
 632 }
 633
 634 disabled_all(){
 635     for opt; do
 636         disabled $opt || return 1
 637     done
 638 }
 639
 640 enabled_any(){
 641     for opt; do
 642         enabled $opt && return 0
 643     done
 644 }
 645
 646 disabled_any(){
 647     for opt; do
 648         disabled $opt && return 0
 649     done
 650     return 1
 651 }
 652
 653 set_default(){
 654     for opt; do
 655         eval : \${$opt:=\$${opt}_default}
 656     done
 657 }
 658
 659 is_in(){
 660     value=$1
 661     shift
 662     for var in $*; do
 663         [ $var = $value ] && return 0
 664     done
 665     return 1
 666 }
 667
 668 do_check_deps(){
 669     for cfg; do
 670         cfg="${cfg#!}"
 671         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 672         disabled ${cfg}_checking && continue
 673         enable ${cfg}_checking
 674         append allopts $cfg
 675
 676         eval dep_all="\$${cfg}_deps"
 677         eval dep_any="\$${cfg}_deps_any"
 678         eval dep_sel="\$${cfg}_select"
 679         eval dep_sgs="\$${cfg}_suggest"
 680         eval dep_ifa="\$${cfg}_if"
 681         eval dep_ifn="\$${cfg}_if_any"
 682
 683         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 684         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 685         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 686
 687         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 688         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 689         enabled_all  $dep_all || disable $cfg
 690         enabled_any  $dep_any || disable $cfg
 691         disabled_any $dep_sel && disable $cfg
 692
 693         if enabled $cfg; then
 694             enable_deep $dep_sel
 695             enable_deep_weak $dep_sgs
 696         fi
 697
 698         disable ${cfg}_checking
 699     done
 700 }
 701
 702 check_deps(){
 703     unset allopts
 704
 705     do_check_deps "$@"
 706
 707     for cfg in $allopts; do
 708         enabled $cfg || continue
 709         eval dep_extralibs="\$${cfg}_extralibs"
 710         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 711     done
 712 }
 713
 714 print_config(){
 715     pfx=$1
 716     files=$2
 717     shift 2
 718     map 'eval echo "$v \${$v:-no}"' "$@" |
 719     awk "BEGIN { split(\"$files\", files) }
 720         {
 721             c = \"$pfx\" toupper(\$1);
 722             v = \$2;
 723             sub(/yes/, 1, v);
 724             sub(/no/,  0, v);
 725             for (f in files) {
 726                 file = files[f];
 727                 if (file ~ /\\.h\$/) {
 728                     printf(\"#define %s %d\\n\", c, v) >>file;
 729                 } else if (file ~ /\\.asm\$/) {
 730                     printf(\"%%define %s %d\\n\", c, v) >>file;
 731                 } else if (file ~ /\\.mak\$/) {
 732                     n = -v ? \"\" : \"!\";
 733                     printf(\"%s%s=yes\\n\", n, c) >>file;
 734                 } else if (file ~ /\\.texi\$/) {
 735                     pre = -v ? \"\" : \"@c \";
 736                     yesno = \$2;
 737                     c2 = tolower(c);
 738                     gsub(/_/, \"-\", c2);
 739                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 740                 }
 741             }
 742         }"
 743 }
 744
 745 print_enabled(){
 746     suf=$1
 747     shift
 748     for v; do
 749         enabled $v && printf "%s\n" ${v%$suf};
 750     done
 751 }
 752
 753 append(){
 754     var=$1
 755     shift
 756     eval "$var=\"\$$var $*\""
 757 }
 758
 759 prepend(){
 760     var=$1
 761     shift
 762     eval "$var=\"$* \$$var\""
 763 }
 764
 765 unique(){
 766     var=$1
 767     uniq_list=""
 768     for tok in $(eval echo \$$var); do
 769         uniq_list="$(filter_out $tok $uniq_list) $tok"
 770     done
 771     eval "$var=\"${uniq_list}\""
 772 }
 773
 774 add_cppflags(){
 775     append CPPFLAGS "$@"
 776 }
 777
 778 add_cflags(){
 779     append CFLAGS $($cflags_filter "$@")
 780 }
 781
 782 add_cxxflags(){
 783     append CXXFLAGS $($cflags_filter "$@")
 784 }
 785
 786 add_asflags(){
 787     append ASFLAGS $($asflags_filter "$@")
 788 }
 789
 790 add_ldflags(){
 791     append LDFLAGS $($ldflags_filter "$@")
 792 }
 793
 794 add_ldexeflags(){
 795     append LDEXEFLAGS $($ldflags_filter "$@")
 796 }
 797
 798 add_ldlibflags(){
 799     append LDLIBFLAGS $($ldflags_filter "$@")
 800 }
 801
 802 add_stripflags(){
 803     append ASMSTRIPFLAGS "$@"
 804 }
 805
 806 add_extralibs(){
 807     prepend extralibs $($ldflags_filter "$@")
 808 }
 809
 810 add_host_cppflags(){
 811     append host_cppflags "$@"
 812 }
 813
 814 add_host_cflags(){
 815     append host_cflags $($host_cflags_filter "$@")
 816 }
 817
 818 add_host_ldflags(){
 819     append host_ldflags $($host_ldflags_filter "$@")
 820 }
 821
 822 add_compat(){
 823     append compat_objs $1
 824     shift
 825     map 'add_cppflags -D$v' "$@"
 826 }
 827
 828 check_cmd(){
 829     log "$@"
 830     "$@" >> $logfile 2>&1
 831 }
 832
 833 check_stat(){
 834     log check_stat "$@"
 835     stat "$1" >> $logfile 2>&1
 836 }
 837
 838 cc_o(){
 839     eval printf '%s\\n' $CC_O
 840 }
 841
 842 cc_e(){
 843     eval printf '%s\\n' $CC_E
 844 }
 845
 846 check_cc(){
 847     log check_cc "$@"
 848     cat > $TMPC
 849     log_file $TMPC
 850     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 851 }
 852
 853 check_cxx(){
 854     log check_cxx "$@"
 855     cat > $TMPCPP
 856     log_file $TMPCPP
 857     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 858 }
 859
 860 check_oc(){
 861     log check_oc "$@"
 862     cat > $TMPM
 863     log_file $TMPM
 864     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 865 }
 866
 867 check_cpp(){
 868     log check_cpp "$@"
 869     cat > $TMPC
 870     log_file $TMPC
 871     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 872 }
 873
 874 as_o(){
 875     eval printf '%s\\n' $AS_O
 876 }
 877
 878 check_as(){
 879     log check_as "$@"
 880     cat > $TMPS
 881     log_file $TMPS
 882     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 883 }
 884
 885 check_inline_asm(){
 886     log check_inline_asm "$@"
 887     name="$1"
 888     code="$2"
 889     shift 2
 890     disable $name
 891     check_cc "$@" <<EOF && enable $name
 892 void foo(void){ __asm__ volatile($code); }
 893 EOF
 894 }
 895
 896 check_insn(){
 897     log check_insn "$@"
 898     check_inline_asm ${1}_inline "\"$2\""
 899     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 900 }
 901
 902 check_yasm(){
 903     log check_yasm "$@"
 904     echo "$1" > $TMPS
 905     log_file $TMPS
 906     shift 1
 907     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 908 }
 909
 910 ld_o(){
 911     eval printf '%s\\n' $LD_O
 912 }
 913
 914 check_ld(){
 915     log check_ld "$@"
 916     type=$1
 917     shift 1
 918     flags=$(filter_out '-l*|*.so' $@)
 919     libs=$(filter '-l*|*.so' $@)
 920     check_$type $($cflags_filter $flags) || return
 921     flags=$($ldflags_filter $flags)
 922     libs=$($ldflags_filter $libs)
 923     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 924 }
 925
 926 print_include(){
 927     hdr=$1
 928     test "${hdr%.h}" = "${hdr}" &&
 929         echo "#include $hdr"    ||
 930         echo "#include <$hdr>"
 931 }
 932
 933 check_code(){
 934     log check_code "$@"
 935     check=$1
 936     headers=$2
 937     code=$3
 938     shift 3
 939     {
 940         for hdr in $headers; do
 941             print_include $hdr
 942         done
 943         echo "int main(void) { $code; return 0; }"
 944     } | check_$check "$@"
 945 }
 946
 947 check_cppflags(){
 948     log check_cppflags "$@"
 949     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 950 int x;
 951 EOF
 952 }
 953
 954 test_cflags(){
 955     log test_cflags "$@"
 956     set -- $($cflags_filter "$@")
 957     check_cc "$@" <<EOF
 958 int x;
 959 EOF
 960 }
 961
 962 check_cflags(){
 963     log check_cflags "$@"
 964     test_cflags "$@" && add_cflags "$@"
 965 }
 966
 967 check_cxxflags(){
 968     log check_cxxflags "$@"
 969     set -- $($cflags_filter "$@")
 970     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 971 int x;
 972 EOF
 973 }
 974
 975 test_ldflags(){
 976     log test_ldflags "$@"
 977     check_ld "cc" "$@" <<EOF
 978 int main(void){ return 0; }
 979 EOF
 980 }
 981
 982 check_ldflags(){
 983     log check_ldflags "$@"
 984     test_ldflags "$@" && add_ldflags "$@"
 985 }
 986
 987 test_stripflags(){
 988     log test_stripflags "$@"
 989     # call check_cc to get a fresh TMPO
 990     check_cc <<EOF
 991 int main(void) { return 0; }
 992 EOF
 993     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 994 }
 995
 996 check_stripflags(){
 997     log check_stripflags "$@"
 998     test_stripflags "$@" && add_stripflags "$@"
 999 }
1000
1001 check_header(){
1002     log check_header "$@"
1003     header=$1
1004     shift
1005     disable_safe $header
1006     check_cpp "$@" <<EOF && enable_safe $header
1007 #include <$header>
1008 int x;
1009 EOF
1010 }
1011
1012 check_header_oc(){
1013     log check_header_oc "$@"
1014     rm -f -- "$TMPO"
1015     header=$1
1016     shift
1017     disable_safe $header
1018     {
1019        echo "#include <$header>"
1020        echo "int main(void) { return 0; }"
1021     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1022 }
1023
1024 check_func(){
1025     log check_func "$@"
1026     func=$1
1027     shift
1028     disable $func
1029     check_ld "cc" "$@" <<EOF && enable $func
1030 extern int $func();
1031 int main(void){ $func(); }
1032 EOF
1033 }
1034
1035 check_mathfunc(){
1036     log check_mathfunc "$@"
1037     func=$1
1038     narg=$2
1039     shift 2
1040     test $narg = 2 && args="f, g" || args="f"
1041     disable $func
1042     check_ld "cc" "$@" <<EOF && enable $func
1043 #include <math.h>
1044 float foo(float f, float g) { return $func($args); }
1045 int main(void){ return (int) foo; }
1046 EOF
1047 }
1048
1049 check_func_headers(){
1050     log check_func_headers "$@"
1051     headers=$1
1052     funcs=$2
1053     shift 2
1054     {
1055         for hdr in $headers; do
1056             print_include $hdr
1057         done
1058         for func in $funcs; do
1059             echo "long check_$func(void) { return (long) $func; }"
1060         done
1061         echo "int main(void) { return 0; }"
1062     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1063 }
1064
1065 check_class_headers_cpp(){
1066     log check_class_headers_cpp "$@"
1067     headers=$1
1068     classes=$2
1069     shift 2
1070     {
1071         for hdr in $headers; do
1072             echo "#include <$hdr>"
1073         done
1074         echo "int main(void) { "
1075         i=1
1076         for class in $classes; do
1077             echo "$class obj$i;"
1078             i=$(expr $i + 1)
1079         done
1080         echo "return 0; }"
1081     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1082 }
1083
1084 check_cpp_condition(){
1085     log check_cpp_condition "$@"
1086     header=$1
1087     condition=$2
1088     shift 2
1089     check_cpp "$@" <<EOF
1090 #include <$header>
1091 #if !($condition)
1092 #error "unsatisfied condition: $condition"
1093 #endif
1094 EOF
1095 }
1096
1097 check_lib(){
1098     log check_lib "$@"
1099     header="$1"
1100     func="$2"
1101     shift 2
1102     check_header $header && check_func $func "$@" && add_extralibs "$@"
1103 }
1104
1105 check_lib2(){
1106     log check_lib2 "$@"
1107     headers="$1"
1108     funcs="$2"
1109     shift 2
1110     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1111 }
1112
1113 check_lib_cpp(){
1114     log check_lib_cpp "$@"
1115     headers="$1"
1116     classes="$2"
1117     shift 2
1118     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1119 }
1120
1121 check_pkg_config(){
1122     log check_pkg_config "$@"
1123     pkgandversion="$1"
1124     pkg="${1%% *}"
1125     headers="$2"
1126     funcs="$3"
1127     shift 3
1128     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1129     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1130     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1131     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1132         set_safe "${pkg}_cflags" $pkg_cflags   &&
1133         set_safe "${pkg}_libs"   $pkg_libs
1134 }
1135
1136 check_exec(){
1137     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1138 }
1139
1140 check_exec_crash(){
1141     code=$(cat)
1142
1143     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1144     # are safe but may not be available everywhere.  Thus we use
1145     # raise(SIGTERM) instead.  The check is run in a subshell so we
1146     # can redirect the "Terminated" message from the shell.  SIGBUS
1147     # is not defined by standard C so it is used conditionally.
1148
1149     (check_exec "$@") >> $logfile 2>&1 <<EOF
1150 #include <signal.h>
1151 static void sighandler(int sig){
1152     raise(SIGTERM);
1153 }
1154 int foo(void){
1155     $code
1156 }
1157 int (*func_ptr)(void) = foo;
1158 int main(void){
1159     signal(SIGILL, sighandler);
1160     signal(SIGFPE, sighandler);
1161     signal(SIGSEGV, sighandler);
1162 #ifdef SIGBUS
1163     signal(SIGBUS, sighandler);
1164 #endif
1165     return func_ptr();
1166 }
1167 EOF
1168 }
1169
1170 check_type(){
1171     log check_type "$@"
1172     headers=$1
1173     type=$2
1174     shift 2
1175     disable_safe "$type"
1176     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1177 }
1178
1179 check_struct(){
1180     log check_struct "$@"
1181     headers=$1
1182     struct=$2
1183     member=$3
1184     shift 3
1185     disable_safe "${struct}_${member}"
1186     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1187         enable_safe "${struct}_${member}"
1188 }
1189
1190 check_builtin(){
1191     log check_builtin "$@"
1192     name=$1
1193     headers=$2
1194     builtin=$3
1195     shift 3
1196     disable "$name"
1197     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1198 }
1199
1200 check_compile_assert(){
1201     log check_compile_assert "$@"
1202     name=$1
1203     headers=$2
1204     condition=$3
1205     shift 3
1206     disable "$name"
1207     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1208 }
1209
1210 require(){
1211     name="$1"
1212     header="$2"
1213     func="$3"
1214     shift 3
1215     check_lib $header $func "$@" || die "ERROR: $name not found"
1216 }
1217
1218 require2(){
1219     name="$1"
1220     headers="$2"
1221     func="$3"
1222     shift 3
1223     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1224 }
1225
1226 require_cpp(){
1227     name="$1"
1228     headers="$2"
1229     classes="$3"
1230     shift 3
1231     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1232 }
1233
1234 use_pkg_config(){
1235     pkg="$1"
1236     check_pkg_config "$@" || return 1
1237     add_cflags    $(get_safe "${pkg}_cflags")
1238     add_extralibs $(get_safe "${pkg}_libs")
1239 }
1240
1241 require_pkg_config(){
1242     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1243 }
1244
1245 require_libfreetype(){
1246     log require_libfreetype "$@"
1247     pkg="freetype2"
1248     check_cmd $pkg_config --exists --print-errors $pkg \
1249       || die "ERROR: $pkg not found"
1250     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1251     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1252     {
1253         echo "#include <ft2build.h>"
1254         echo "#include FT_FREETYPE_H"
1255         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1256         echo "int main(void) { return 0; }"
1257     } | check_ld "cc" $pkg_cflags $pkg_libs \
1258       && set_safe "${pkg}_cflags" $pkg_cflags \
1259       && set_safe "${pkg}_libs"   $pkg_libs \
1260       || die "ERROR: $pkg not found"
1261     add_cflags    $(get_safe "${pkg}_cflags")
1262     add_extralibs $(get_safe "${pkg}_libs")
1263 }
1264
1265 hostcc_e(){
1266     eval printf '%s\\n' $HOSTCC_E
1267 }
1268
1269 hostcc_o(){
1270     eval printf '%s\\n' $HOSTCC_O
1271 }
1272
1273 check_host_cc(){
1274     log check_host_cc "$@"
1275     cat > $TMPC
1276     log_file $TMPC
1277     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1278 }
1279
1280 check_host_cpp(){
1281     log check_host_cpp "$@"
1282     cat > $TMPC
1283     log_file $TMPC
1284     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1285 }
1286
1287 check_host_cppflags(){
1288     log check_host_cppflags "$@"
1289     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1290 int x;
1291 EOF
1292 }
1293
1294 check_host_cflags(){
1295     log check_host_cflags "$@"
1296     set -- $($host_cflags_filter "$@")
1297     check_host_cc "$@" <<EOF && append host_cflags "$@"
1298 int x;
1299 EOF
1300 }
1301
1302 check_host_cpp_condition(){
1303     log check_host_cpp_condition "$@"
1304     header=$1
1305     condition=$2
1306     shift 2
1307     check_host_cpp "$@" <<EOF
1308 #include <$header>
1309 #if !($condition)
1310 #error "unsatisfied condition: $condition"
1311 #endif
1312 EOF
1313 }
1314
1315 apply(){
1316     file=$1
1317     shift
1318     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1319 }
1320
1321 cp_if_changed(){
1322     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1323     mkdir -p "$(dirname $2)"
1324     $cp_f "$1" "$2"
1325 }
1326
1327 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1328 # system-dependent things.
1329
1330 COMPONENT_LIST="
1331     bsfs
1332     decoders
1333     demuxers
1334     encoders
1335     filters
1336     hwaccels
1337     indevs
1338     muxers
1339     outdevs
1340     parsers
1341     protocols
1342 "
1343
1344 EXAMPLE_LIST="
1345     avio_reading_example
1346     avio_list_dir_example
1347     decoding_encoding_example
1348     demuxing_decoding_example
1349     extract_mvs_example
1350     filter_audio_example
1351     filtering_audio_example
1352     filtering_video_example
1353     metadata_example
1354     muxing_example
1355     qsvdec_example
1356     remuxing_example
1357     resampling_audio_example
1358     scaling_video_example
1359     transcode_aac_example
1360     transcoding_example
1361 "
1362
1363 EXTERNAL_LIBRARY_LIST="
1364     avisynth
1365     bzlib
1366     crystalhd
1367     decklink
1368     frei0r
1369     gnutls
1370     iconv
1371     ladspa
1372     libaacplus
1373     libass
1374     libbluray
1375     libbs2b
1376     libcaca
1377     libcdio
1378     libcelt
1379     libdc1394
1380     libdcadec
1381     libfaac
1382     libfdk_aac
1383     libflite
1384     libfontconfig
1385     libfreetype
1386     libfribidi
1387     libgme
1388     libgsm
1389     libiec61883
1390     libilbc
1391     libkvazaar
1392     libmfx
1393     libmodplug
1394     libmp3lame
1395     libnut
1396     libopencore_amrnb
1397     libopencore_amrwb
1398     libopencv
1399     libopenh264
1400     libopenjpeg
1401     libopus
1402     libpulse
1403     libquvi
1404     librtmp
1405     libschroedinger
1406     libshine
1407     libsmbclient
1408     libsnappy
1409     libsoxr
1410     libspeex
1411     libssh
1412     libstagefright_h264
1413     libtheora
1414     libtwolame
1415     libutvideo
1416     libv4l2
1417     libvidstab
1418     libvo_aacenc
1419     libvo_amrwbenc
1420     libvorbis
1421     libvpx
1422     libwavpack
1423     libwebp
1424     libx264
1425     libx265
1426     libxavs
1427     libxcb
1428     libxcb_shm
1429     libxcb_shape
1430     libxcb_xfixes
1431     libxvid
1432     libzmq
1433     libzvbi
1434     lzma
1435     mmal
1436     nvenc
1437     openal
1438     opencl
1439     opengl
1440     openssl
1441     sdl
1442     securetransport
1443     x11grab
1444     xlib
1445     zlib
1446 "
1447
1448 DOCUMENT_LIST="
1449     doc
1450     htmlpages
1451     manpages
1452     podpages
1453     txtpages
1454 "
1455
1456 FEATURE_LIST="
1457     ftrapv
1458     gray
1459     hardcoded_tables
1460     runtime_cpudetect
1461     safe_bitstream_reader
1462     shared
1463     small
1464     static
1465     swscale_alpha
1466 "
1467
1468 HWACCEL_LIST="
1469     d3d11va
1470     dxva2
1471     vaapi
1472     vda
1473     vdpau
1474     videotoolbox
1475     xvmc
1476 "
1477
1478 LIBRARY_LIST="
1479     avcodec
1480     avdevice
1481     avfilter
1482     avformat
1483     avresample
1484     avutil
1485     postproc
1486     swresample
1487     swscale
1488 "
1489
1490 LICENSE_LIST="
1491     gpl
1492     nonfree
1493     version3
1494 "
1495
1496 PROGRAM_LIST="
1497     ffplay
1498     ffprobe
1499     ffserver
1500     ffmpeg
1501 "
1502
1503 SUBSYSTEM_LIST="
1504     dct
1505     dwt
1506     error_resilience
1507     faan
1508     fast_unaligned
1509     fft
1510     lsp
1511     lzo
1512     mdct
1513     pixelutils
1514     network
1515     rdft
1516 "
1517
1518 CONFIG_LIST="
1519     $COMPONENT_LIST
1520     $DOCUMENT_LIST
1521     $EXAMPLE_LIST
1522     $EXTERNAL_LIBRARY_LIST
1523     $FEATURE_LIST
1524     $HWACCEL_LIST
1525     $LICENSE_LIST
1526     $LIBRARY_LIST
1527     $PROGRAM_LIST
1528     $SUBSYSTEM_LIST
1529     fontconfig
1530     incompatible_libav_abi
1531     memalign_hack
1532     memory_poisoning
1533     neon_clobber_test
1534     pic
1535     pod2man
1536     raise_major
1537     thumb
1538     valgrind_backtrace
1539     xmm_clobber_test
1540 "
1541
1542 THREADS_LIST="
1543     pthreads
1544     os2threads
1545     w32threads
1546 "
1547
1548 ATOMICS_LIST="
1549     atomics_gcc
1550     atomics_suncc
1551     atomics_win32
1552 "
1553
1554 ARCH_LIST="
1555     aarch64
1556     alpha
1557     arm
1558     avr32
1559     avr32_ap
1560     avr32_uc
1561     bfin
1562     ia64
1563     m68k
1564     mips
1565     mips64
1566     parisc
1567     ppc
1568     ppc64
1569     s390
1570     sh4
1571     sparc
1572     sparc64
1573     tilegx
1574     tilepro
1575     tomi
1576     x86
1577     x86_32
1578     x86_64
1579 "
1580
1581 ARCH_EXT_LIST_ARM="
1582     armv5te
1583     armv6
1584     armv6t2
1585     armv8
1586     neon
1587     vfp
1588     vfpv3
1589     setend
1590 "
1591
1592 ARCH_EXT_LIST_MIPS="
1593     mipsfpu
1594     mips32r2
1595     mips32r5
1596     mips64r6
1597     mipsdspr1
1598     mipsdspr2
1599     msa
1600 "
1601
1602 ARCH_EXT_LIST_LOONGSON="
1603     loongson2
1604     loongson3
1605     mmi
1606 "
1607
1608 ARCH_EXT_LIST_X86_SIMD="
1609     amd3dnow
1610     amd3dnowext
1611     avx
1612     avx2
1613     fma3
1614     fma4
1615     mmx
1616     mmxext
1617     sse
1618     sse2
1619     sse3
1620     sse4
1621     sse42
1622     ssse3
1623     xop
1624 "
1625
1626 ARCH_EXT_LIST_PPC="
1627     altivec
1628     dcbzl
1629     ldbrx
1630     power8
1631     ppc4xx
1632     vsx
1633 "
1634
1635 ARCH_EXT_LIST_X86="
1636     $ARCH_EXT_LIST_X86_SIMD
1637     cpunop
1638     i686
1639 "
1640
1641 ARCH_EXT_LIST="
1642     $ARCH_EXT_LIST_ARM
1643     $ARCH_EXT_LIST_PPC
1644     $ARCH_EXT_LIST_X86
1645     $ARCH_EXT_LIST_MIPS
1646     $ARCH_EXT_LIST_LOONGSON
1647 "
1648
1649 ARCH_FEATURES="
1650     aligned_stack
1651     fast_64bit
1652     fast_clz
1653     fast_cmov
1654     local_aligned_8
1655     local_aligned_16
1656     local_aligned_32
1657     simd_align_16
1658 "
1659
1660 BUILTIN_LIST="
1661     atomic_cas_ptr
1662     atomic_compare_exchange
1663     machine_rw_barrier
1664     MemoryBarrier
1665     mm_empty
1666     rdtsc
1667     sarestart
1668     sync_val_compare_and_swap
1669 "
1670 HAVE_LIST_CMDLINE="
1671     inline_asm
1672     symver
1673     yasm
1674 "
1675
1676 HAVE_LIST_PUB="
1677     bigendian
1678     fast_unaligned
1679     incompatible_libav_abi
1680 "
1681
1682 HEADERS_LIST="
1683     alsa_asoundlib_h
1684     altivec_h
1685     arpa_inet_h
1686     asm_types_h
1687     cdio_paranoia_h
1688     cdio_paranoia_paranoia_h
1689     dev_bktr_ioctl_bt848_h
1690     dev_bktr_ioctl_meteor_h
1691     dev_ic_bt8xx_h
1692     dev_video_bktr_ioctl_bt848_h
1693     dev_video_meteor_ioctl_meteor_h
1694     direct_h
1695     dlfcn_h
1696     d3d11_h
1697     dxva_h
1698     ES2_gl_h
1699     gsm_h
1700     io_h
1701     mach_mach_time_h
1702     machine_ioctl_bt848_h
1703     machine_ioctl_meteor_h
1704     malloc_h
1705     openjpeg_1_5_openjpeg_h
1706     OpenGL_gl3_h
1707     poll_h
1708     sndio_h
1709     soundcard_h
1710     sys_mman_h
1711     sys_param_h
1712     sys_resource_h
1713     sys_select_h
1714     sys_soundcard_h
1715     sys_time_h
1716     sys_un_h
1717     sys_videoio_h
1718     termios_h
1719     udplite_h
1720     unistd_h
1721     valgrind_valgrind_h
1722     windows_h
1723     winsock2_h
1724 "
1725
1726 INTRINSICS_LIST="
1727     intrinsics_neon
1728 "
1729
1730 MATH_FUNCS="
1731     atanf
1732     atan2f
1733     cbrt
1734     cbrtf
1735     copysign
1736     cosf
1737     erf
1738     exp2
1739     exp2f
1740     expf
1741     isinf
1742     isnan
1743     ldexpf
1744     llrint
1745     llrintf
1746     log2
1747     log2f
1748     log10f
1749     lrint
1750     lrintf
1751     powf
1752     rint
1753     round
1754     roundf
1755     sinf
1756     trunc
1757     truncf
1758 "
1759
1760 SYSTEM_FUNCS="
1761     access
1762     aligned_malloc
1763     clock_gettime
1764     closesocket
1765     CommandLineToArgvW
1766     CoTaskMemFree
1767     CryptGenRandom
1768     dlopen
1769     fcntl
1770     flt_lim
1771     fork
1772     getaddrinfo
1773     gethrtime
1774     getopt
1775     GetProcessAffinityMask
1776     GetProcessMemoryInfo
1777     GetProcessTimes
1778     getrusage
1779     getservbyport
1780     GetSystemTimeAsFileTime
1781     gettimeofday
1782     glob
1783     glXGetProcAddress
1784     gmtime_r
1785     inet_aton
1786     isatty
1787     jack_port_get_latency_range
1788     kbhit
1789     localtime_r
1790     lzo1x_999_compress
1791     mach_absolute_time
1792     MapViewOfFile
1793     memalign
1794     mkstemp
1795     mmap
1796     mprotect
1797     nanosleep
1798     PeekNamedPipe
1799     posix_memalign
1800     pthread_cancel
1801     sched_getaffinity
1802     SetConsoleTextAttribute
1803     SetConsoleCtrlHandler
1804     setmode
1805     setrlimit
1806     Sleep
1807     strerror_r
1808     sysconf
1809     sysctl
1810     usleep
1811     VirtualAlloc
1812     wglGetProcAddress
1813 "
1814
1815 TOOLCHAIN_FEATURES="
1816     as_dn_directive
1817     as_func
1818     as_object_arch
1819     asm_mod_q
1820     attribute_may_alias
1821     attribute_packed
1822     ebp_available
1823     ebx_available
1824     gnu_as
1825     gnu_windres
1826     ibm_asm
1827     inline_asm_labels
1828     inline_asm_nonlocal_labels
1829     inline_asm_direct_symbol_refs
1830     pragma_deprecated
1831     rsync_contimeout
1832     symver_asm_label
1833     symver_gnu_asm
1834     vfp_args
1835     xform_asm
1836     xmm_clobbers
1837 "
1838
1839 TYPES_LIST="
1840     CONDITION_VARIABLE_Ptr
1841     socklen_t
1842     struct_addrinfo
1843     struct_dcadec_exss_info_matrix_encoding
1844     struct_group_source_req
1845     struct_ip_mreq_source
1846     struct_ipv6_mreq
1847     struct_pollfd
1848     struct_rusage_ru_maxrss
1849     struct_sctp_event_subscribe
1850     struct_sockaddr_in6
1851     struct_sockaddr_sa_len
1852     struct_sockaddr_storage
1853     struct_stat_st_mtim_tv_nsec
1854     struct_v4l2_frmivalenum_discrete
1855 "
1856
1857 HAVE_LIST="
1858     $ARCH_EXT_LIST
1859     $(add_suffix _external $ARCH_EXT_LIST)
1860     $(add_suffix _inline   $ARCH_EXT_LIST)
1861     $ARCH_FEATURES
1862     $ATOMICS_LIST
1863     $BUILTIN_LIST
1864     $HAVE_LIST_CMDLINE
1865     $HAVE_LIST_PUB
1866     $HEADERS_LIST
1867     $INTRINSICS_LIST
1868     $MATH_FUNCS
1869     $SYSTEM_FUNCS
1870     $THREADS_LIST
1871     $TOOLCHAIN_FEATURES
1872     $TYPES_LIST
1873     atomics_native
1874     dos_paths
1875     dxva2api_cobj
1876     dxva2_lib
1877     libc_msvcrt
1878     libdc1394_1
1879     libdc1394_2
1880     makeinfo
1881     makeinfo_html
1882     perl
1883     pod2man
1884     sdl
1885     section_data_rel_ro
1886     texi2html
1887     threads
1888     vaapi_x11
1889     vdpau_x11
1890     xlib
1891 "
1892
1893 # options emitted with CONFIG_ prefix but not available on the command line
1894 CONFIG_EXTRA="
1895     aandcttables
1896     ac3dsp
1897     audio_frame_queue
1898     audiodsp
1899     blockdsp
1900     bswapdsp
1901     cabac
1902     dvprofile
1903     exif
1904     faandct
1905     faanidct
1906     fdctdsp
1907     flacdsp
1908     fmtconvert
1909     frame_thread_encoder
1910     g722dsp
1911     gcrypt
1912     gmp
1913     golomb
1914     gplv3
1915     h263dsp
1916     h264chroma
1917     h264dsp
1918     h264pred
1919     h264qpel
1920     hpeldsp
1921     huffman
1922     huffyuvdsp
1923     huffyuvencdsp
1924     idctdsp
1925     iirfilter
1926     imdct15
1927     intrax8
1928     ividsp
1929     jpegtables
1930     libx262
1931     lgplv3
1932     llauddsp
1933     llviddsp
1934     lpc
1935     me_cmp
1936     mpeg_er
1937     mpegaudio
1938     mpegaudiodsp
1939     mpegvideo
1940     mpegvideoenc
1941     mss34dsp
1942     pixblockdsp
1943     qpeldsp
1944     qsv
1945     qsvdec
1946     qsvenc
1947     rangecoder
1948     riffdec
1949     riffenc
1950     rtpdec
1951     rtpenc_chain
1952     rv34dsp
1953     sinewin
1954     snappy
1955     startcode
1956     texturedsp
1957     texturedspenc
1958     tpeldsp
1959     videodsp
1960     vp3dsp
1961     vp56dsp
1962     vp8dsp
1963     wma_freqs
1964     wmv2dsp
1965 "
1966
1967 CMDLINE_SELECT="
1968     $ARCH_EXT_LIST
1969     $CONFIG_LIST
1970     $HAVE_LIST_CMDLINE
1971     $THREADS_LIST
1972     asm
1973     cross_compile
1974     debug
1975     extra_warnings
1976     logging
1977     lto
1978     optimizations
1979     rpath
1980     stripping
1981 "
1982
1983 PATHS_LIST="
1984     bindir
1985     datadir
1986     docdir
1987     incdir
1988     libdir
1989     mandir
1990     pkgconfigdir
1991     prefix
1992     shlibdir
1993 "
1994
1995 CMDLINE_SET="
1996     $PATHS_LIST
1997     ar
1998     arch
1999     as
2000     assert_level
2001     build_suffix
2002     cc
2003     cpu
2004     cross_prefix
2005     cxx
2006     dep_cc
2007     doxygen
2008     env
2009     extra_version
2010     gas
2011     host_cc
2012     host_cflags
2013     host_ld
2014     host_ldflags
2015     host_libs
2016     host_os
2017     install
2018     ld
2019     logfile
2020     malloc_prefix
2021     nm
2022     optflags
2023     pkg_config
2024     pkg_config_flags
2025     progs_suffix
2026     random_seed
2027     ranlib
2028     samples
2029     strip
2030     sws_max_filter_size
2031     sysinclude
2032     sysroot
2033     target_exec
2034     target_os
2035     target_path
2036     target_samples
2037     tempprefix
2038     toolchain
2039     valgrind
2040     yasmexe
2041 "
2042
2043 CMDLINE_APPEND="
2044     extra_cflags
2045     extra_cxxflags
2046     host_cppflags
2047 "
2048
2049 # code dependency declarations
2050
2051 # architecture extensions
2052
2053 armv5te_deps="arm"
2054 armv6_deps="arm"
2055 armv6t2_deps="arm"
2056 armv8_deps="aarch64"
2057 neon_deps_any="aarch64 arm"
2058 intrinsics_neon_deps="neon"
2059 vfp_deps_any="aarch64 arm"
2060 vfpv3_deps="vfp"
2061 setend_deps="arm"
2062
2063 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2064
2065 mipsfpu_deps="mips"
2066 mipsdspr1_deps="mips"
2067 mipsdspr2_deps="mips"
2068 mips32r2_deps="mips"
2069 mips32r5_deps="mips"
2070 mips64r6_deps="mips"
2071 msa_deps="mips"
2072 mmi_deps="mips"
2073
2074 altivec_deps="ppc"
2075 dcbzl_deps="ppc"
2076 ldbrx_deps="ppc"
2077 ppc4xx_deps="ppc"
2078 vsx_deps="altivec"
2079 power8_deps="vsx"
2080
2081 cpunop_deps="i686"
2082 x86_64_select="i686"
2083 x86_64_suggest="fast_cmov"
2084
2085 amd3dnow_deps="mmx"
2086 amd3dnowext_deps="amd3dnow"
2087 i686_deps="x86"
2088 mmx_deps="x86"
2089 mmxext_deps="mmx"
2090 sse_deps="mmxext"
2091 sse2_deps="sse"
2092 sse3_deps="sse2"
2093 ssse3_deps="sse3"
2094 sse4_deps="ssse3"
2095 sse42_deps="sse4"
2096 avx_deps="sse42"
2097 xop_deps="avx"
2098 fma3_deps="avx"
2099 fma4_deps="avx"
2100 avx2_deps="avx"
2101
2102 mmx_external_deps="yasm"
2103 mmx_inline_deps="inline_asm"
2104 mmx_suggest="mmx_external mmx_inline"
2105
2106 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2107     eval dep=\$${ext}_deps
2108     eval ${ext}_external_deps='"${dep}_external"'
2109     eval ${ext}_inline_deps='"${dep}_inline"'
2110     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2111 done
2112
2113 aligned_stack_if_any="aarch64 ppc x86"
2114 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2115 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2116 fast_unaligned_if_any="aarch64 ppc x86"
2117 simd_align_16_if_any="altivec neon sse"
2118
2119 # system capabilities
2120 symver_if_any="symver_asm_label symver_gnu_asm"
2121 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2122
2123 # threading support
2124 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2125 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2126 atomics_win32_if="MemoryBarrier"
2127 atomics_native_if_any="$ATOMICS_LIST"
2128 w32threads_deps="atomics_native"
2129 threads_if_any="$THREADS_LIST"
2130
2131 # subsystems
2132 dct_select="rdft"
2133 error_resilience_select="me_cmp"
2134 faandct_deps="faan fdctdsp"
2135 faanidct_deps="faan idctdsp"
2136 frame_thread_encoder_deps="encoders threads"
2137 intrax8_select="error_resilience"
2138 mdct_select="fft"
2139 rdft_select="fft"
2140 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2141 mpeg_er_select="error_resilience"
2142 mpegaudio_select="mpegaudiodsp"
2143 mpegaudiodsp_select="dct"
2144 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2145 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2146 qsvdec_select="qsv"
2147 qsvenc_select="qsv"
2148
2149 # decoders / encoders
2150 aac_decoder_select="imdct15 mdct sinewin"
2151 aac_fixed_decoder_select="mdct sinewin"
2152 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2153 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2154 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2155 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2156 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2157 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2158 adpcm_g722_decoder_select="g722dsp"
2159 adpcm_g722_encoder_select="g722dsp"
2160 aic_decoder_select="golomb idctdsp"
2161 alac_encoder_select="lpc"
2162 als_decoder_select="bswapdsp"
2163 amrnb_decoder_select="lsp"
2164 amrwb_decoder_select="lsp"
2165 amv_decoder_select="sp5x_decoder exif"
2166 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2167 ape_decoder_select="bswapdsp llauddsp"
2168 apng_decoder_select="zlib"
2169 apng_encoder_select="huffyuvencdsp zlib"
2170 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2171 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2172 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2173 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2174 atrac1_decoder_select="mdct sinewin"
2175 atrac3_decoder_select="mdct"
2176 atrac3p_decoder_select="mdct sinewin"
2177 avrn_decoder_select="exif jpegtables"
2178 bink_decoder_select="blockdsp hpeldsp"
2179 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2180 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2181 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2182 cllc_decoder_select="bswapdsp"
2183 comfortnoise_encoder_select="lpc"
2184 cook_decoder_select="audiodsp mdct sinewin"
2185 cscd_decoder_select="lzo"
2186 cscd_decoder_suggest="zlib"
2187 dca_decoder_select="fmtconvert mdct"
2188 dds_decoder_select="texturedsp"
2189 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2190 dnxhd_decoder_select="blockdsp idctdsp"
2191 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2192 dvvideo_decoder_select="dvprofile idctdsp"
2193 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2194 dxa_decoder_select="zlib"
2195 eac3_decoder_select="ac3_decoder"
2196 eac3_encoder_select="ac3_encoder"
2197 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2198 eatgq_decoder_select="aandcttables"
2199 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2200 exr_decoder_select="zlib"
2201 ffv1_decoder_select="golomb rangecoder"
2202 ffv1_encoder_select="rangecoder"
2203 ffvhuff_decoder_select="huffyuv_decoder"
2204 ffvhuff_encoder_select="huffyuv_encoder"
2205 fic_decoder_select="golomb"
2206 flac_decoder_select="flacdsp golomb"
2207 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2208 flashsv_decoder_select="zlib"
2209 flashsv_encoder_select="zlib"
2210 flashsv2_encoder_select="zlib"
2211 flashsv2_decoder_select="zlib"
2212 flv_decoder_select="h263_decoder"
2213 flv_encoder_select="h263_encoder"
2214 fourxm_decoder_select="blockdsp bswapdsp"
2215 fraps_decoder_select="bswapdsp huffman"
2216 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2217 g729_decoder_select="audiodsp"
2218 h261_decoder_select="mpegvideo"
2219 h261_encoder_select="aandcttables mpegvideoenc"
2220 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2221 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2222 h263i_decoder_select="h263_decoder"
2223 h263p_decoder_select="h263_decoder"
2224 h263p_encoder_select="h263_encoder"
2225 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2226 h264_decoder_suggest="error_resilience"
2227 h264_qsv_decoder_deps="libmfx"
2228 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2229 h264_qsv_encoder_deps="libmfx"
2230 h264_qsv_encoder_select="qsvenc"
2231 hap_decoder_select="snappy texturedsp"
2232 hap_encoder_deps="libsnappy"
2233 hap_encoder_select="texturedspenc"
2234 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2235 hevc_qsv_encoder_deps="libmfx"
2236 hevc_qsv_decoder_deps="libmfx"
2237 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2238 hevc_qsv_encoder_select="qsvenc"
2239 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2240 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2241 iac_decoder_select="imc_decoder"
2242 imc_decoder_select="bswapdsp fft mdct sinewin"
2243 indeo3_decoder_select="hpeldsp"
2244 indeo4_decoder_select="ividsp"
2245 indeo5_decoder_select="ividsp"
2246 interplay_video_decoder_select="hpeldsp"
2247 jpegls_decoder_select="golomb mjpeg_decoder"
2248 jpegls_encoder_select="golomb"
2249 jv_decoder_select="blockdsp"
2250 lagarith_decoder_select="huffyuvdsp"
2251 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2252 loco_decoder_select="golomb"
2253 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2254 metasound_decoder_select="lsp mdct sinewin"
2255 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2256 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2257 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2258 mjpegb_decoder_select="mjpeg_decoder"
2259 mlp_decoder_select="mlp_parser"
2260 motionpixels_decoder_select="bswapdsp"
2261 mp1_decoder_select="mpegaudio"
2262 mp1float_decoder_select="mpegaudio"
2263 mp2_decoder_select="mpegaudio"
2264 mp2float_decoder_select="mpegaudio"
2265 mp3_decoder_select="mpegaudio"
2266 mp3adu_decoder_select="mpegaudio"
2267 mp3adufloat_decoder_select="mpegaudio"
2268 mp3float_decoder_select="mpegaudio"
2269 mp3on4_decoder_select="mpegaudio"
2270 mp3on4float_decoder_select="mpegaudio"
2271 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2272 mpc8_decoder_select="mpegaudiodsp"
2273 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2274 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2275 mpegvideo_decoder_select="mpegvideo"
2276 mpeg1video_decoder_select="mpegvideo"
2277 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2278 mpeg2video_decoder_select="mpegvideo"
2279 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2280 mpeg2_qsv_decoder_deps="libmfx"
2281 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2282 mpeg2_qsv_encoder_deps="libmfx"
2283 mpeg2_qsv_encoder_select="qsvenc"
2284 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2285 mpeg4_encoder_select="h263_encoder"
2286 msa1_decoder_select="mss34dsp"
2287 msmpeg4v1_decoder_select="h263_decoder"
2288 msmpeg4v2_decoder_select="h263_decoder"
2289 msmpeg4v2_encoder_select="h263_encoder"
2290 msmpeg4v3_decoder_select="h263_decoder"
2291 msmpeg4v3_encoder_select="h263_encoder"
2292 mss2_decoder_select="vc1_decoder"
2293 mts2_decoder_select="mss34dsp"
2294 mxpeg_decoder_select="mjpeg_decoder"
2295 nellymoser_decoder_select="mdct sinewin"
2296 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2297 nuv_decoder_select="idctdsp lzo"
2298 on2avc_decoder_select="mdct"
2299 opus_decoder_deps="swresample"
2300 opus_decoder_select="imdct15"
2301 png_decoder_select="zlib"
2302 png_encoder_select="huffyuvencdsp zlib"
2303 prores_decoder_select="blockdsp idctdsp"
2304 prores_encoder_select="fdctdsp"
2305 qcelp_decoder_select="lsp"
2306 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2307 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2308 ra_144_decoder_select="audiodsp"
2309 ralf_decoder_select="golomb"
2310 rawvideo_decoder_select="bswapdsp"
2311 rtjpeg_decoder_select="me_cmp"
2312 rv10_decoder_select="h263_decoder"
2313 rv10_encoder_select="h263_encoder"
2314 rv20_decoder_select="h263_decoder"
2315 rv20_encoder_select="h263_encoder"
2316 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2317 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2318 shorten_decoder_select="golomb"
2319 sipr_decoder_select="lsp"
2320 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2321 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2322 sonic_decoder_select="golomb rangecoder"
2323 sonic_encoder_select="golomb rangecoder"
2324 sonic_ls_encoder_select="golomb rangecoder"
2325 sp5x_decoder_select="mjpeg_decoder"
2326 svq1_decoder_select="hpeldsp"
2327 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2328 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2329 svq3_decoder_suggest="zlib"
2330 tak_decoder_select="audiodsp"
2331 tdsc_decoder_select="zlib mjpeg_decoder"
2332 theora_decoder_select="vp3_decoder"
2333 thp_decoder_select="mjpeg_decoder"
2334 tiff_decoder_suggest="zlib lzma"
2335 tiff_encoder_suggest="zlib"
2336 truehd_decoder_select="mlp_parser"
2337 truemotion2_decoder_select="bswapdsp"
2338 truespeech_decoder_select="bswapdsp"
2339 tscc_decoder_select="zlib"
2340 twinvq_decoder_select="mdct lsp sinewin"
2341 txd_decoder_select="texturedsp"
2342 utvideo_decoder_select="bswapdsp"
2343 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2344 vble_decoder_select="huffyuvdsp"
2345 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2346 vc1image_decoder_select="vc1_decoder"
2347 vc1_qsv_decoder_deps="libmfx"
2348 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2349 vorbis_decoder_select="mdct"
2350 vorbis_encoder_select="mdct"
2351 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2352 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2353 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2354 vp6a_decoder_select="vp6_decoder"
2355 vp6f_decoder_select="vp6_decoder"
2356 vp7_decoder_select="h264pred videodsp vp8dsp"
2357 vp8_decoder_select="h264pred videodsp vp8dsp"
2358 vp9_decoder_select="videodsp vp9_parser"
2359 webp_decoder_select="vp8_decoder"
2360 wmalossless_decoder_select="llauddsp"
2361 wmapro_decoder_select="mdct sinewin wma_freqs"
2362 wmav1_decoder_select="mdct sinewin wma_freqs"
2363 wmav1_encoder_select="mdct sinewin wma_freqs"
2364 wmav2_decoder_select="mdct sinewin wma_freqs"
2365 wmav2_encoder_select="mdct sinewin wma_freqs"
2366 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2367 wmv1_decoder_select="h263_decoder"
2368 wmv1_encoder_select="h263_encoder"
2369 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2370 wmv2_encoder_select="h263_encoder wmv2dsp"
2371 wmv3_decoder_select="vc1_decoder"
2372 wmv3image_decoder_select="wmv3_decoder"
2373 zerocodec_decoder_select="zlib"
2374 zlib_decoder_select="zlib"
2375 zlib_encoder_select="zlib"
2376 zmbv_decoder_select="zlib"
2377 zmbv_encoder_select="zlib"
2378
2379 # hardware accelerators
2380 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2381 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2382 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2383 vaapi_deps="va_va_h"
2384 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2385 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore -framework CoreServices"
2386 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2387 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2388 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreServices"
2389 xvmc_deps="X11_extensions_XvMClib_h"
2390
2391 h263_vaapi_hwaccel_deps="vaapi"
2392 h263_vaapi_hwaccel_select="h263_decoder"
2393 h263_vdpau_hwaccel_deps="vdpau"
2394 h263_vdpau_hwaccel_select="h263_decoder"
2395 h263_videotoolbox_hwaccel_deps="videotoolbox"
2396 h263_videotoolbox_hwaccel_select="h263_decoder"
2397 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2398 h264_d3d11va_hwaccel_deps="d3d11va"
2399 h264_d3d11va_hwaccel_select="h264_decoder"
2400 h264_dxva2_hwaccel_deps="dxva2"
2401 h264_dxva2_hwaccel_select="h264_decoder"
2402 h264_mmal_decoder_deps="mmal"
2403 h264_mmal_hwaccel_deps="mmal"
2404 h264_mmal_decoder_select="h264_decoder"
2405 h264_mmal_encoder_deps="mmal"
2406 h264_qsv_hwaccel_deps="libmfx"
2407 h264_vaapi_hwaccel_deps="vaapi"
2408 h264_vaapi_hwaccel_select="h264_decoder"
2409 h264_vda_decoder_deps="vda"
2410 h264_vda_decoder_select="h264_decoder"
2411 h264_vda_hwaccel_deps="vda"
2412 h264_vda_hwaccel_select="h264_decoder"
2413 h264_vda_old_hwaccel_deps="vda"
2414 h264_vda_old_hwaccel_select="h264_decoder"
2415 h264_vdpau_decoder_deps="vdpau"
2416 h264_vdpau_decoder_select="h264_decoder"
2417 h264_vdpau_hwaccel_deps="vdpau"
2418 h264_vdpau_hwaccel_select="h264_decoder"
2419 h264_videotoolbox_hwaccel_deps="videotoolbox"
2420 h264_videotoolbox_hwaccel_select="h264_decoder"
2421 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2422 hevc_d3d11va_hwaccel_select="hevc_decoder"
2423 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2424 hevc_dxva2_hwaccel_select="hevc_decoder"
2425 hevc_qsv_hwaccel_deps="libmfx"
2426 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2427 hevc_vdpau_hwaccel_select="hevc_decoder"
2428 mpeg_vdpau_decoder_deps="vdpau"
2429 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2430 mpeg_xvmc_hwaccel_deps="xvmc"
2431 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2432 mpeg1_vdpau_decoder_deps="vdpau"
2433 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2434 mpeg1_vdpau_hwaccel_deps="vdpau"
2435 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2436 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2437 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2438 mpeg1_xvmc_hwaccel_deps="xvmc"
2439 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2440 mpeg2_crystalhd_decoder_select="crystalhd"
2441 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2442 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2443 mpeg2_dxva2_hwaccel_deps="dxva2"
2444 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2445 mpeg2_qsv_hwaccel_deps="libmfx"
2446 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2447 mpeg2_vaapi_hwaccel_deps="vaapi"
2448 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2449 mpeg2_vdpau_hwaccel_deps="vdpau"
2450 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2451 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2452 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2453 mpeg2_xvmc_hwaccel_deps="xvmc"
2454 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2455 mpeg4_crystalhd_decoder_select="crystalhd"
2456 mpeg4_vaapi_hwaccel_deps="vaapi"
2457 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2458 mpeg4_vdpau_decoder_deps="vdpau"
2459 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2460 mpeg4_vdpau_hwaccel_deps="vdpau"
2461 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2462 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2463 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2464 msmpeg4_crystalhd_decoder_select="crystalhd"
2465 vc1_crystalhd_decoder_select="crystalhd"
2466 vc1_d3d11va_hwaccel_deps="d3d11va"
2467 vc1_d3d11va_hwaccel_select="vc1_decoder"
2468 vc1_dxva2_hwaccel_deps="dxva2"
2469 vc1_dxva2_hwaccel_select="vc1_decoder"
2470 vc1_vaapi_hwaccel_deps="vaapi"
2471 vc1_vaapi_hwaccel_select="vc1_decoder"
2472 vc1_vdpau_decoder_deps="vdpau"
2473 vc1_vdpau_decoder_select="vc1_decoder"
2474 vc1_vdpau_hwaccel_deps="vdpau"
2475 vc1_vdpau_hwaccel_select="vc1_decoder"
2476 vc1_qsv_hwaccel_deps="libmfx"
2477 vc1_qsv_hwaccel_select="qsvdec_vc1"
2478 wmv3_crystalhd_decoder_select="crystalhd"
2479 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2480 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2481 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2482 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2483 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2484
2485 # parsers
2486 h264_parser_select="h264_decoder"
2487 hevc_parser_select="golomb"
2488 mpegvideo_parser_select="mpegvideo"
2489 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2490 vc1_parser_select="mpegvideo startcode vc1_decoder"
2491
2492 # bitstream_filters
2493 mjpeg2jpeg_bsf_select="jpegtables"
2494
2495 # external libraries
2496 libaacplus_encoder_deps="libaacplus"
2497 libcelt_decoder_deps="libcelt"
2498 libdcadec_decoder_deps="libdcadec"
2499 libfaac_encoder_deps="libfaac"
2500 libfaac_encoder_select="audio_frame_queue"
2501 libfdk_aac_decoder_deps="libfdk_aac"
2502 libfdk_aac_encoder_deps="libfdk_aac"
2503 libfdk_aac_encoder_select="audio_frame_queue"
2504 libgme_demuxer_deps="libgme"
2505 libgsm_decoder_deps="libgsm"
2506 libgsm_encoder_deps="libgsm"
2507 libgsm_ms_decoder_deps="libgsm"
2508 libgsm_ms_encoder_deps="libgsm"
2509 libilbc_decoder_deps="libilbc"
2510 libilbc_encoder_deps="libilbc"
2511 libkvazaar_encoder_deps="libkvazaar"
2512 libmodplug_demuxer_deps="libmodplug"
2513 libmp3lame_encoder_deps="libmp3lame"
2514 libmp3lame_encoder_select="audio_frame_queue"
2515 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2516 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2517 libopencore_amrnb_encoder_select="audio_frame_queue"
2518 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2519 libopenh264_encoder_deps="libopenh264"
2520 libopenjpeg_decoder_deps="libopenjpeg"
2521 libopenjpeg_encoder_deps="libopenjpeg"
2522 libopus_decoder_deps="libopus"
2523 libopus_encoder_deps="libopus"
2524 libopus_encoder_select="audio_frame_queue"
2525 libquvi_demuxer_deps="libquvi"
2526 libschroedinger_decoder_deps="libschroedinger"
2527 libschroedinger_encoder_deps="libschroedinger"
2528 libshine_encoder_deps="libshine"
2529 libshine_encoder_select="audio_frame_queue"
2530 libspeex_decoder_deps="libspeex"
2531 libspeex_encoder_deps="libspeex"
2532 libspeex_encoder_select="audio_frame_queue"
2533 libstagefright_h264_decoder_deps="libstagefright_h264"
2534 libtheora_encoder_deps="libtheora"
2535 libtwolame_encoder_deps="libtwolame"
2536 libvo_aacenc_encoder_deps="libvo_aacenc"
2537 libvo_aacenc_encoder_select="audio_frame_queue"
2538 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2539 libvorbis_decoder_deps="libvorbis"
2540 libvorbis_encoder_deps="libvorbis"
2541 libvorbis_encoder_select="audio_frame_queue"
2542 libvpx_vp8_decoder_deps="libvpx"
2543 libvpx_vp8_encoder_deps="libvpx"
2544 libvpx_vp9_decoder_deps="libvpx"
2545 libvpx_vp9_encoder_deps="libvpx"
2546 libwavpack_encoder_deps="libwavpack"
2547 libwebp_encoder_deps="libwebp"
2548 libwebp_anim_encoder_deps="libwebp"
2549 libx262_encoder_deps="libx262"
2550 libx264_encoder_deps="libx264"
2551 libx264rgb_encoder_deps="libx264"
2552 libx264rgb_encoder_select="libx264_encoder"
2553 libx265_encoder_deps="libx265"
2554 libxavs_encoder_deps="libxavs"
2555 libxvid_encoder_deps="libxvid"
2556 libutvideo_decoder_deps="libutvideo"
2557 libutvideo_encoder_deps="libutvideo"
2558 libzvbi_teletext_decoder_deps="libzvbi"
2559 nvenc_encoder_deps="nvenc"
2560 nvenc_h264_encoder_deps="nvenc"
2561 nvenc_hevc_encoder_deps="nvenc"
2562
2563 # demuxers / muxers
2564 ac3_demuxer_select="ac3_parser"
2565 asf_demuxer_select="riffdec"
2566 asf_o_demuxer_select="riffdec"
2567 asf_muxer_select="riffenc"
2568 asf_stream_muxer_select="asf_muxer"
2569 avi_demuxer_select="riffdec exif"
2570 avi_muxer_select="riffenc"
2571 avisynth_demuxer_deps="avisynth"
2572 avisynth_demuxer_select="riffdec"
2573 caf_demuxer_select="riffdec"
2574 dash_muxer_select="mp4_muxer"
2575 dirac_demuxer_select="dirac_parser"
2576 dts_demuxer_select="dca_parser"
2577 dtshd_demuxer_select="dca_parser"
2578 dv_demuxer_select="dvprofile"
2579 dv_muxer_select="dvprofile"
2580 dxa_demuxer_select="riffdec"
2581 eac3_demuxer_select="ac3_parser"
2582 f4v_muxer_select="mov_muxer"
2583 flac_demuxer_select="flac_parser"
2584 hds_muxer_select="flv_muxer"
2585 hls_muxer_select="mpegts_muxer"
2586 image2_alias_pix_demuxer_select="image2_demuxer"
2587 image2_brender_pix_demuxer_select="image2_demuxer"
2588 ipod_muxer_select="mov_muxer"
2589 ismv_muxer_select="mov_muxer"
2590 libnut_demuxer_deps="libnut"
2591 libnut_muxer_deps="libnut"
2592 matroska_audio_muxer_select="matroska_muxer"
2593 matroska_demuxer_select="riffdec"
2594 matroska_demuxer_suggest="bzlib lzo zlib"
2595 matroska_muxer_select="riffenc"
2596 mmf_muxer_select="riffenc"
2597 mov_demuxer_select="riffdec"
2598 mov_demuxer_suggest="zlib"
2599 mov_muxer_select="riffenc rtpenc_chain"
2600 mp3_demuxer_select="mpegaudio_parser"
2601 mp4_muxer_select="mov_muxer"
2602 mpegts_muxer_select="adts_muxer latm_muxer"
2603 mpegtsraw_demuxer_select="mpegts_demuxer"
2604 mxf_d10_muxer_select="mxf_muxer"
2605 mxf_opatom_muxer_select="mxf_muxer"
2606 nut_muxer_select="riffenc"
2607 nuv_demuxer_select="riffdec"
2608 oga_muxer_select="ogg_muxer"
2609 ogg_demuxer_select="golomb"
2610 opus_muxer_select="ogg_muxer"
2611 psp_muxer_select="mov_muxer"
2612 rtp_demuxer_select="sdp_demuxer"
2613 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2614 rtsp_demuxer_select="http_protocol rtpdec"
2615 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2616 sap_demuxer_select="sdp_demuxer"
2617 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2618 sdp_demuxer_select="rtpdec"
2619 smoothstreaming_muxer_select="ismv_muxer"
2620 spdif_muxer_select="aac_parser"
2621 spx_muxer_select="ogg_muxer"
2622 tak_demuxer_select="tak_parser"
2623 tg2_muxer_select="mov_muxer"
2624 tgp_muxer_select="mov_muxer"
2625 vobsub_demuxer_select="mpegps_demuxer"
2626 w64_demuxer_select="wav_demuxer"
2627 w64_muxer_select="wav_muxer"
2628 wav_demuxer_select="riffdec"
2629 wav_muxer_select="riffenc"
2630 webm_muxer_select="riffenc"
2631 wtv_demuxer_select="riffdec"
2632 wtv_muxer_select="riffenc"
2633 xmv_demuxer_select="riffdec"
2634 xwma_demuxer_select="riffdec"
2635
2636 # indevs / outdevs
2637 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2638 alsa_outdev_deps="alsa_asoundlib_h"
2639 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2640 avfoundation_indev_select="avfoundation"
2641 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2642 caca_outdev_deps="libcaca"
2643 decklink_outdev_deps="decklink pthreads"
2644 decklink_outdev_extralibs="-lstdc++"
2645 decklink_indev_deps="decklink pthreads"
2646 decklink_indev_extralibs="-lstdc++"
2647 dshow_indev_deps="IBaseFilter"
2648 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2649 dv1394_indev_deps="dv1394"
2650 dv1394_indev_select="dv_demuxer"
2651 fbdev_indev_deps="linux_fb_h"
2652 fbdev_outdev_deps="linux_fb_h"
2653 gdigrab_indev_deps="CreateDIBSection"
2654 gdigrab_indev_extralibs="-lgdi32"
2655 gdigrab_indev_select="bmp_decoder"
2656 iec61883_indev_deps="libiec61883"
2657 jack_indev_deps="jack_jack_h sem_timedwait"
2658 lavfi_indev_deps="avfilter"
2659 libcdio_indev_deps="libcdio"
2660 libdc1394_indev_deps="libdc1394"
2661 libv4l2_indev_deps="libv4l2"
2662 openal_indev_deps="openal"
2663 opengl_outdev_deps="opengl"
2664 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2665 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2666 pulse_indev_deps="libpulse"
2667 pulse_outdev_deps="libpulse"
2668 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2669 qtkit_indev_select="qtkit"
2670 sdl_outdev_deps="sdl"
2671 sndio_indev_deps="sndio_h"
2672 sndio_outdev_deps="sndio_h"
2673 v4l_indev_deps="linux_videodev_h"
2674 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2675 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2676 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2677 vfwcap_indev_extralibs="-lavicap32"
2678 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2679 xv_outdev_extralibs="-lXv -lX11 -lXext"
2680 x11grab_indev_deps="x11grab"
2681 x11grab_xcb_indev_deps="libxcb"
2682
2683 # protocols
2684 async_protocol_deps="pthreads"
2685 bluray_protocol_deps="libbluray"
2686 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2687 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2688 ffrtmpcrypt_protocol_select="tcp_protocol"
2689 ffrtmphttp_protocol_deps="!librtmp_protocol"
2690 ffrtmphttp_protocol_select="http_protocol"
2691 ftp_protocol_select="tcp_protocol"
2692 gopher_protocol_select="network"
2693 http_protocol_select="tcp_protocol"
2694 httpproxy_protocol_select="tcp_protocol"
2695 https_protocol_select="tls_protocol"
2696 icecast_protocol_select="http_protocol"
2697 librtmp_protocol_deps="librtmp"
2698 librtmpe_protocol_deps="librtmp"
2699 librtmps_protocol_deps="librtmp"
2700 librtmpt_protocol_deps="librtmp"
2701 librtmpte_protocol_deps="librtmp"
2702 libsmbclient_protocol_deps="libsmbclient gplv3"
2703 libssh_protocol_deps="libssh"
2704 mmsh_protocol_select="http_protocol"
2705 mmst_protocol_select="network"
2706 rtmp_protocol_deps="!librtmp_protocol"
2707 rtmp_protocol_select="tcp_protocol"
2708 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2709 rtmps_protocol_deps="!librtmp_protocol"
2710 rtmps_protocol_select="tls_protocol"
2711 rtmpt_protocol_select="ffrtmphttp_protocol"
2712 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2713 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2714 rtp_protocol_select="udp_protocol"
2715 sctp_protocol_deps="struct_sctp_event_subscribe"
2716 sctp_protocol_select="network"
2717 srtp_protocol_select="rtp_protocol"
2718 tcp_protocol_select="network"
2719 tls_gnutls_protocol_deps="gnutls !tls_securetransport_protocol"
2720 tls_gnutls_protocol_select="tcp_protocol"
2721 tls_openssl_protocol_deps="openssl !tls_securetransport_protocol !tls_gnutls_protocol"
2722 tls_openssl_protocol_select="tcp_protocol"
2723 tls_securetransport_protocol_deps="securetransport"
2724 tls_securetransport_protocol_select="tcp_protocol"
2725 tls_protocol_deps_any="tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2726 udp_protocol_select="network"
2727 udplite_protocol_select="network"
2728 unix_protocol_deps="sys_un_h"
2729 unix_protocol_select="network"
2730
2731 # filters
2732 amovie_filter_deps="avcodec avformat"
2733 aresample_filter_deps="swresample"
2734 ass_filter_deps="libass"
2735 asyncts_filter_deps="avresample"
2736 atempo_filter_deps="avcodec"
2737 atempo_filter_select="rdft"
2738 azmq_filter_deps="libzmq"
2739 blackframe_filter_deps="gpl"
2740 boxblur_filter_deps="gpl"
2741 bs2b_filter_deps="libbs2b"
2742 colormatrix_filter_deps="gpl"
2743 cover_rect_filter_deps="avcodec avformat gpl"
2744 cropdetect_filter_deps="gpl"
2745 delogo_filter_deps="gpl"
2746 deshake_filter_select="pixelutils"
2747 drawtext_filter_deps="libfreetype"
2748 dynaudnorm_filter_deps="copysign erf"
2749 ebur128_filter_deps="gpl"
2750 eq_filter_deps="gpl"
2751 fftfilt_filter_deps="avcodec"
2752 fftfilt_filter_select="rdft"
2753 flite_filter_deps="libflite"
2754 find_rect_filter_deps="avcodec avformat gpl"
2755 frei0r_filter_deps="frei0r dlopen"
2756 frei0r_src_filter_deps="frei0r dlopen"
2757 fspp_filter_deps="gpl"
2758 geq_filter_deps="gpl"
2759 histeq_filter_deps="gpl"
2760 hqdn3d_filter_deps="gpl"
2761 interlace_filter_deps="gpl"
2762 kerndeint_filter_deps="gpl"
2763 ladspa_filter_deps="ladspa dlopen"
2764 mcdeint_filter_deps="avcodec gpl"
2765 movie_filter_deps="avcodec avformat"
2766 mpdecimate_filter_deps="gpl"
2767 mpdecimate_filter_select="pixelutils"
2768 mptestsrc_filter_deps="gpl"
2769 negate_filter_deps="lut_filter"
2770 perspective_filter_deps="gpl"
2771 pp7_filter_deps="gpl"
2772 ocv_filter_deps="libopencv"
2773 owdenoise_filter_deps="gpl"
2774 pan_filter_deps="swresample"
2775 phase_filter_deps="gpl"
2776 pp_filter_deps="gpl postproc"
2777 pullup_filter_deps="gpl"
2778 removelogo_filter_deps="avcodec avformat swscale"
2779 repeatfields_filter_deps="gpl"
2780 resample_filter_deps="avresample"
2781 sab_filter_deps="gpl swscale"
2782 scale_filter_deps="swscale"
2783 select_filter_select="pixelutils"
2784 smartblur_filter_deps="gpl swscale"
2785 showcqt_filter_deps="avcodec"
2786 showcqt_filter_select="fft"
2787 showspectrum_filter_deps="avcodec"
2788 showspectrum_filter_select="rdft"
2789 spp_filter_deps="gpl avcodec"
2790 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2791 stereo3d_filter_deps="gpl"
2792 subtitles_filter_deps="avformat avcodec libass"
2793 super2xsai_filter_deps="gpl"
2794 tinterlace_filter_deps="gpl"
2795 vidstabdetect_filter_deps="libvidstab"
2796 vidstabtransform_filter_deps="libvidstab"
2797 pixfmts_super2xsai_test_deps="super2xsai_filter"
2798 tinterlace_merge_test_deps="tinterlace_filter"
2799 tinterlace_pad_test_deps="tinterlace_filter"
2800 uspp_filter_deps="gpl avcodec"
2801 zmq_filter_deps="libzmq"
2802 zoompan_filter_deps="swscale"
2803
2804 # examples
2805 avio_reading="avformat avcodec avutil"
2806 avio_list_dir="avformat avutil"
2807 avcodec_example_deps="avcodec avutil"
2808 decoding_encoding_example_deps="avcodec avformat avutil"
2809 demuxing_decoding_example_deps="avcodec avformat avutil"
2810 extract_mvs_example_deps="avcodec avformat avutil"
2811 filter_audio_example_deps="avfilter avutil"
2812 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2813 filtering_video_example_deps="avfilter avcodec avformat avutil"
2814 metadata_example_deps="avformat avutil"
2815 muxing_example_deps="avcodec avformat avutil swscale"
2816 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2817 remuxing_example_deps="avcodec avformat avutil"
2818 resampling_audio_example_deps="avutil swresample"
2819 scaling_video_example_deps="avutil swscale"
2820 transcode_aac_example_deps="avcodec avformat swresample"
2821 transcoding_example_deps="avfilter avcodec avformat avutil"
2822
2823 # libraries, in linking order
2824 avcodec_deps="avutil"
2825 avdevice_deps="avformat avcodec avutil"
2826 avfilter_deps="avutil"
2827 avformat_deps="avcodec avutil"
2828 avresample_deps="avutil"
2829 postproc_deps="avutil gpl"
2830 swresample_deps="avutil"
2831 swscale_deps="avutil"
2832
2833 # programs
2834 ffmpeg_deps="avcodec avfilter avformat swresample"
2835 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2836                null_filter
2837                setpts_filter trim_filter"
2838 ffplay_deps="avcodec avformat swscale swresample sdl"
2839 ffplay_libs='$sdl_libs'
2840 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2841 ffprobe_deps="avcodec avformat"
2842 ffserver_deps="avformat fork sarestart"
2843 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2844
2845 # documentation
2846 podpages_deps="perl"
2847 manpages_deps="perl pod2man"
2848 htmlpages_deps="perl"
2849 htmlpages_deps_any="makeinfo_html texi2html"
2850 txtpages_deps="perl makeinfo"
2851 doc_deps_any="manpages htmlpages podpages txtpages"
2852
2853 # default parameters
2854
2855 logfile="config.log"
2856
2857 # installation paths
2858 prefix_default="/usr/local"
2859 bindir_default='${prefix}/bin'
2860 datadir_default='${prefix}/share/ffmpeg'
2861 docdir_default='${prefix}/share/doc/ffmpeg'
2862 incdir_default='${prefix}/include'
2863 libdir_default='${prefix}/lib'
2864 mandir_default='${prefix}/share/man'
2865
2866 # toolchain
2867 ar_default="ar"
2868 cc_default="gcc"
2869 cxx_default="g++"
2870 host_cc_default="gcc"
2871 cp_f="cp -f"
2872 doxygen_default="doxygen"
2873 install="install"
2874 ln_s="ln -s -f"
2875 nm_default="nm -g"
2876 objformat="elf"
2877 pkg_config_default=pkg-config
2878 ranlib_default="ranlib"
2879 strip_default="strip"
2880 yasmexe_default="yasm"
2881 windres_default="windres"
2882
2883 # OS
2884 target_os_default=$(tolower $(uname -s))
2885 host_os=$target_os_default
2886
2887 # machine
2888 if test "$target_os_default" = aix; then
2889     arch_default=$(uname -p)
2890     strip_default="strip -X32_64"
2891 else
2892     arch_default=$(uname -m)
2893 fi
2894 cpu="generic"
2895 intrinsics="none"
2896
2897 # configurable options
2898 enable $PROGRAM_LIST
2899 enable $DOCUMENT_LIST
2900 enable $EXAMPLE_LIST
2901 enable $(filter_out avresample $LIBRARY_LIST)
2902 enable stripping
2903
2904 enable asm
2905 enable debug
2906 enable doc
2907 enable faan faandct faanidct
2908 enable optimizations
2909 enable runtime_cpudetect
2910 enable safe_bitstream_reader
2911 enable static
2912 enable swscale_alpha
2913 enable valgrind_backtrace
2914
2915 sws_max_filter_size_default=256
2916 set_default sws_max_filter_size
2917
2918 # Enable hwaccels by default.
2919 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
2920 enable xlib
2921
2922 # build settings
2923 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2924 LIBPREF="lib"
2925 LIBSUF=".a"
2926 FULLNAME='$(NAME)$(BUILDSUF)'
2927 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2928 SLIBPREF="lib"
2929 SLIBSUF=".so"
2930 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2931 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2932 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2933 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2934 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2935 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2936
2937 asflags_filter=echo
2938 cflags_filter=echo
2939 ldflags_filter=echo
2940
2941 AS_C='-c'
2942 AS_O='-o $@'
2943 CC_C='-c'
2944 CC_E='-E -o $@'
2945 CC_O='-o $@'
2946 CXX_C='-c'
2947 CXX_O='-o $@'
2948 LD_O='-o $@'
2949 LD_LIB='-l%'
2950 LD_PATH='-L'
2951 HOSTCC_C='-c'
2952 HOSTCC_E='-E -o $@'
2953 HOSTCC_O='-o $@'
2954 HOSTLD_O='-o $@'
2955
2956 host_libs='-lm'
2957 host_cflags_filter=echo
2958 host_ldflags_filter=echo
2959
2960 target_path='$(CURDIR)'
2961
2962 # since the object filename is not given with the -MM flag, the compiler
2963 # is only able to print the basename, and we must add the path ourselves
2964 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2965 DEPFLAGS='-MM'
2966
2967 # find source path
2968 if test -f configure; then
2969     source_path=.
2970 else
2971     source_path=$(cd $(dirname "$0"); pwd)
2972     echo "$source_path" | grep -q '[[:blank:]]' &&
2973         die "Out of tree builds are impossible with whitespace in source path."
2974     test -e "$source_path/config.h" &&
2975         die "Out of tree builds are impossible with config.h in source dir."
2976 fi
2977
2978 for v in "$@"; do
2979     r=${v#*=}
2980     l=${v%"$r"}
2981     r=$(sh_quote "$r")
2982     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2983 done
2984
2985 find_things(){
2986     thing=$1
2987     pattern=$2
2988     file=$source_path/$3
2989     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2990 }
2991
2992 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2993 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2994 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2995 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2996 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2997 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2998 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2999 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3000 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3001 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3002 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3003
3004 ALL_COMPONENTS="
3005     $BSF_LIST
3006     $DECODER_LIST
3007     $DEMUXER_LIST
3008     $ENCODER_LIST
3009     $FILTER_LIST
3010     $HWACCEL_LIST
3011     $INDEV_LIST
3012     $MUXER_LIST
3013     $OUTDEV_LIST
3014     $PARSER_LIST
3015     $PROTOCOL_LIST
3016 "
3017
3018 for n in $COMPONENT_LIST; do
3019     v=$(toupper ${n%s})_LIST
3020     eval enable \$$v
3021     eval ${n}_if_any="\$$v"
3022 done
3023
3024 enable $ARCH_EXT_LIST
3025
3026 die_unknown(){
3027     echo "Unknown option \"$1\"."
3028     echo "See $0 --help for available options."
3029     exit 1
3030 }
3031
3032 print_3_columns() {
3033     cat | tr ' ' '\n' | sort | pr -r -3 -t
3034 }
3035
3036 show_list() {
3037     suffix=_$1
3038     shift
3039     echo $* | sed s/$suffix//g | print_3_columns
3040     exit 0
3041 }
3042
3043 rand_list(){
3044     IFS=', '
3045     set -- $*
3046     unset IFS
3047     for thing; do
3048         comp=${thing%:*}
3049         prob=${thing#$comp}
3050         prob=${prob#:}
3051         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3052         echo "prob ${prob:-0.5}"
3053         printf '%s\n' $comp
3054     done
3055 }
3056
3057 do_random(){
3058     action=$1
3059     shift
3060     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3061     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3062 }
3063
3064 for opt do
3065     optval="${opt#*=}"
3066     case "$opt" in
3067         --extra-ldflags=*)
3068             add_ldflags $optval
3069         ;;
3070         --extra-ldexeflags=*)
3071             add_ldexeflags $optval
3072         ;;
3073         --extra-ldlibflags=*)
3074             add_ldlibflags $optval
3075         ;;
3076         --extra-libs=*)
3077             add_extralibs $optval
3078         ;;
3079         --disable-devices)
3080             disable $INDEV_LIST $OUTDEV_LIST
3081         ;;
3082         --enable-debug=*)
3083             debuglevel="$optval"
3084         ;;
3085         --disable-programs)
3086             disable $PROGRAM_LIST
3087         ;;
3088         --disable-everything)
3089             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3090         ;;
3091         --disable-all)
3092             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3093             disable $LIBRARY_LIST $PROGRAM_LIST doc
3094         ;;
3095         --enable-random|--disable-random)
3096             action=${opt%%-random}
3097             do_random ${action#--} $COMPONENT_LIST
3098         ;;
3099         --enable-random=*|--disable-random=*)
3100             action=${opt%%-random=*}
3101             do_random ${action#--} $optval
3102         ;;
3103         --enable-*=*|--disable-*=*)
3104             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3105             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3106             eval list=\$$(toupper $thing)_LIST
3107             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3108             list=$(filter "$name" $list)
3109             [ "$list" = "" ] && warn "Option $opt did not match anything"
3110             $action $list
3111         ;;
3112         --enable-?*|--disable-?*)
3113             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3114             if is_in $option $COMPONENT_LIST; then
3115                 test $action = disable && action=unset
3116                 eval $action \$$(toupper ${option%s})_LIST
3117             elif is_in $option $CMDLINE_SELECT; then
3118                 $action $option
3119             else
3120                 die_unknown $opt
3121             fi
3122         ;;
3123         --list-*)
3124             NAME="${opt#--list-}"
3125             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3126             NAME=${NAME%s}
3127             eval show_list $NAME \$$(toupper $NAME)_LIST
3128         ;;
3129         --help|-h) show_help
3130         ;;
3131         --fatal-warnings) enable fatal_warnings
3132         ;;
3133         *)
3134             optname="${opt%%=*}"
3135             optname="${optname#--}"
3136             optname=$(echo "$optname" | sed 's/-/_/g')
3137             if is_in $optname $CMDLINE_SET; then
3138                 eval $optname='$optval'
3139             elif is_in $optname $CMDLINE_APPEND; then
3140                 append $optname "$optval"
3141             else
3142                 die_unknown $opt
3143             fi
3144         ;;
3145     esac
3146 done
3147
3148 for e in $env; do
3149     eval "export $e"
3150 done
3151
3152 disabled logging && logfile=/dev/null
3153
3154 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3155 set >> $logfile
3156
3157 test -n "$valgrind" && toolchain="valgrind-memcheck"
3158
3159 case "$toolchain" in
3160     clang-asan)
3161         cc_default="clang"
3162         add_cflags  -fsanitize=address
3163         add_ldflags -fsanitize=address
3164     ;;
3165     clang-tsan)
3166         cc_default="clang"
3167         add_cflags  -fsanitize=thread -pie
3168         add_ldflags -fsanitize=thread -pie
3169     ;;
3170     clang-usan)
3171         cc_default="clang"
3172         add_cflags  -fsanitize=undefined
3173         add_ldflags -fsanitize=undefined
3174     ;;
3175     gcc-asan)
3176         cc_default="gcc"
3177         add_cflags  -fsanitize=address
3178         add_ldflags -fsanitize=address
3179     ;;
3180     gcc-tsan)
3181         cc_default="gcc"
3182         add_cflags  -fsanitize=thread -pie -fPIC
3183         add_ldflags -fsanitize=thread -pie -fPIC
3184     ;;
3185     gcc-usan)
3186         cc_default="gcc"
3187         add_cflags  -fsanitize=undefined
3188         add_ldflags -fsanitize=undefined
3189     ;;
3190     valgrind-massif)
3191         target_exec_default=${valgrind:-"valgrind"}
3192         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"
3193     ;;
3194     valgrind-memcheck)
3195         target_exec_default=${valgrind:-"valgrind"}
3196         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3197     ;;
3198     msvc)
3199         # Check whether the current MSVC version needs the C99 converter.
3200         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3201         # support enough of C99 to build ffmpeg. Default to the new
3202         # behaviour if the regexp was unable to match anything, since this
3203         # successfully parses the version number of existing supported
3204         # versions that require the converter (MSVC 2010 and 2012).
3205         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3206         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3207             cc_default="cl"
3208         else
3209             cc_default="c99wrap cl"
3210         fi
3211         ld_default="$source_path/compat/windows/mslink"
3212         nm_default="dumpbin -symbols"
3213         ar_default="lib"
3214         case "$arch" in
3215         arm*)
3216             as_default="armasm"
3217             ;;
3218         esac
3219         target_os_default="win32"
3220         # Use a relative path for TMPDIR. This makes sure all the
3221         # ffconf temp files are written with a relative path, avoiding
3222         # issues with msys/win32 path conversion for MSVC parameters
3223         # such as -Fo<file> or -out:<file>.
3224         TMPDIR=.
3225     ;;
3226     icl)
3227         cc_default="icl"
3228         ld_default="xilink"
3229         nm_default="dumpbin -symbols"
3230         ar_default="xilib"
3231         target_os_default="win32"
3232         TMPDIR=.
3233     ;;
3234     gcov)
3235         add_cflags  -fprofile-arcs -ftest-coverage
3236         add_ldflags -fprofile-arcs -ftest-coverage
3237     ;;
3238     hardened)
3239         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3240         add_cflags   -fno-strict-overflow -fstack-protector-all
3241         add_ldflags  -Wl,-z,relro -Wl,-z,now
3242     ;;
3243     ?*)
3244         die "Unknown toolchain $toolchain"
3245     ;;
3246 esac
3247
3248 test -n "$cross_prefix" && enable cross_compile
3249
3250 if enabled cross_compile; then
3251     test -n "$arch" && test -n "$target_os" ||
3252         die "Must specify target arch and OS when cross-compiling"
3253 fi
3254
3255 ar_default="${cross_prefix}${ar_default}"
3256 cc_default="${cross_prefix}${cc_default}"
3257 cxx_default="${cross_prefix}${cxx_default}"
3258 nm_default="${cross_prefix}${nm_default}"
3259 pkg_config_default="${cross_prefix}${pkg_config_default}"
3260 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3261     ranlib_default="${cross_prefix}${ranlib_default} -D"
3262 else
3263     ranlib_default="${cross_prefix}${ranlib_default}"
3264 fi
3265 strip_default="${cross_prefix}${strip_default}"
3266 windres_default="${cross_prefix}${windres_default}"
3267
3268 sysinclude_default="${sysroot}/usr/include"
3269
3270 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3271     target_exec target_os yasmexe
3272 enabled cross_compile || host_cc_default=$cc
3273 set_default host_cc
3274
3275 pkg_config_fail_message=""
3276 if ! $pkg_config --version >/dev/null 2>&1; then
3277     warn "$pkg_config not found, library detection may fail."
3278     pkg_config=false
3279 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3280     pkg_config_fail_message="
3281 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3282 fi
3283
3284 if test $doxygen != $doxygen_default && \
3285   ! $doxygen --version >/dev/null 2>&1; then
3286     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3287 fi
3288
3289 exesuf() {
3290     case $1 in
3291         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3292     esac
3293 }
3294
3295 EXESUF=$(exesuf $target_os)
3296 HOSTEXESUF=$(exesuf $host_os)
3297
3298 # set temporary file name
3299 : ${TMPDIR:=$TEMPDIR}
3300 : ${TMPDIR:=$TMP}
3301 : ${TMPDIR:=/tmp}
3302
3303 if [ -n "$tempprefix" ] ; then
3304     mktemp(){
3305         echo $tempprefix.${HOSTNAME}.${UID}
3306     }
3307 elif ! check_cmd mktemp -u XXXXXX; then
3308     # simple replacement for missing mktemp
3309     # NOT SAFE FOR GENERAL USE
3310     mktemp(){
3311         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3312     }
3313 fi
3314
3315 tmpfile(){
3316     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3317         (set -C; exec > $tmp) 2>/dev/null ||
3318         die "Unable to create temporary file in $TMPDIR."
3319     append TMPFILES $tmp
3320     eval $1=$tmp
3321 }
3322
3323 trap 'rm -f -- $TMPFILES' EXIT
3324
3325 tmpfile TMPASM .asm
3326 tmpfile TMPC   .c
3327 tmpfile TMPCPP .cpp
3328 tmpfile TMPE   $EXESUF
3329 tmpfile TMPH   .h
3330 tmpfile TMPM   .m
3331 tmpfile TMPO   .o
3332 tmpfile TMPS   .S
3333 tmpfile TMPSH  .sh
3334 tmpfile TMPV   .ver
3335
3336 unset -f mktemp
3337
3338 chmod +x $TMPE
3339
3340 # make sure we can execute files in $TMPDIR
3341 cat > $TMPSH 2>> $logfile <<EOF
3342 #! /bin/sh
3343 EOF
3344 chmod +x $TMPSH >> $logfile 2>&1
3345 if ! $TMPSH >> $logfile 2>&1; then
3346     cat <<EOF
3347 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3348 variable to another directory and make sure that it is not mounted noexec.
3349 EOF
3350     die "Sanity test failed."
3351 fi
3352
3353 armasm_flags(){
3354     for flag; do
3355         case $flag in
3356             # Filter out MSVC cl.exe options from cflags that shouldn't
3357             # be passed to gas-preprocessor
3358             -M[TD]*)                                            ;;
3359             *)                  echo $flag                      ;;
3360         esac
3361    done
3362 }
3363
3364 ccc_flags(){
3365     for flag; do
3366         case $flag in
3367             -std=c99)           echo -c99                       ;;
3368             -mcpu=*)            echo -arch ${flag#*=}           ;;
3369             -mieee)             echo -ieee                      ;;
3370             -O*|-fast)          echo $flag                      ;;
3371             -fno-math-errno)    echo -assume nomath_errno       ;;
3372             -g)                 echo -g3                        ;;
3373             -Wall)              echo -msg_enable level2         ;;
3374             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3375             -Wl,*)              echo $flag                      ;;
3376             -f*|-W*)                                            ;;
3377             *)                  echo $flag                      ;;
3378         esac
3379    done
3380 }
3381
3382 cparser_flags(){
3383     for flag; do
3384         case $flag in
3385             -Wno-switch)             echo -Wno-switch-enum ;;
3386             -Wno-format-zero-length) ;;
3387             -Wdisabled-optimization) ;;
3388             -Wno-pointer-sign)       echo -Wno-other ;;
3389             *)                       echo $flag ;;
3390         esac
3391     done
3392 }
3393
3394 msvc_common_flags(){
3395     for flag; do
3396         case $flag in
3397             # In addition to specifying certain flags under the compiler
3398             # specific filters, they must be specified here as well or else the
3399             # generic catch all at the bottom will print the original flag.
3400             -Wall)                ;;
3401             -std=c99)             ;;
3402             # Common flags
3403             -fomit-frame-pointer) ;;
3404             -g)                   echo -Z7 ;;
3405             -fno-math-errno)      ;;
3406             -fno-common)          ;;
3407             -fno-signed-zeros)    ;;
3408             -fPIC)                ;;
3409             -mthumb)              ;;
3410             -march=*)             ;;
3411             -lz)                  echo zlib.lib ;;
3412             -lavifil32)           echo vfw32.lib ;;
3413             -lavicap32)           echo vfw32.lib user32.lib ;;
3414             -l*)                  echo ${flag#-l}.lib ;;
3415             -LARGEADDRESSAWARE)   echo $flag ;;
3416             -L*)                  echo -libpath:${flag#-L} ;;
3417             *)                    echo $flag ;;
3418         esac
3419     done
3420 }
3421
3422 msvc_flags(){
3423     msvc_common_flags "$@"
3424     for flag; do
3425         case $flag in
3426             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3427                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3428                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3429                                        -wd4307 \
3430                                        -wd4273 -wd4554 -wd4701 ;;
3431         esac
3432     done
3433 }
3434
3435 icl_flags(){
3436     msvc_common_flags "$@"
3437     for flag; do
3438         case $flag in
3439             # Despite what Intel's documentation says -Wall, which is supported
3440             # on Windows, does enable remarks so disable them here.
3441             -Wall)                echo $flag -Qdiag-disable:remark ;;
3442             -std=c99)             echo -Qstd=c99 ;;
3443             -flto)                echo -ipo ;;
3444         esac
3445     done
3446 }
3447
3448 icc_flags(){
3449     for flag; do
3450         case $flag in
3451             -flto)                echo -ipo ;;
3452             *)                    echo $flag ;;
3453         esac
3454     done
3455 }
3456
3457 pgi_flags(){
3458     for flag; do
3459         case $flag in
3460             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3461             -fomit-frame-pointer) echo -Mnoframe ;;
3462             -g)                   echo -gopt ;;
3463             *)                    echo $flag ;;
3464         esac
3465     done
3466 }
3467
3468 suncc_flags(){
3469     for flag; do
3470         case $flag in
3471             -march=*|-mcpu=*)
3472                 case "${flag#*=}" in
3473                     native)                   echo -xtarget=native       ;;
3474                     v9|niagara)               echo -xarch=sparc          ;;
3475                     ultrasparc)               echo -xarch=sparcvis       ;;
3476                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3477                     i586|pentium)             echo -xchip=pentium        ;;
3478                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3479                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3480                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3481                     pentium4*)          echo -xtarget=pentium4           ;;
3482                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3483                     *-sse3)             echo -xarch=sse3                 ;;
3484                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3485                     bonnell)                   echo -xarch=ssse3         ;;
3486                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3487                     westmere)                  echo -xtarget=westmere    ;;
3488                     silvermont)                echo -xarch=sse4_2        ;;
3489                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3490                     core-avx*|ivybridge|haswell|broadwell)
3491                                                echo -xarch=avx           ;;
3492                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3493                     btver1)                    echo -xarch=amdsse4a      ;;
3494                     btver2|bdver*)             echo -xarch=avx           ;;
3495                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3496                     k8|opteron|athlon64|athlon-fx)
3497                                                echo -xarch=sse2a         ;;
3498                     athlon*)                   echo -xarch=pentium_proa  ;;
3499                 esac
3500                 ;;
3501             -std=c99)             echo -xc99              ;;
3502             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3503             -fPIC)                echo -KPIC -xcode=pic32 ;;
3504             -W*,*)                echo $flag              ;;
3505             -f*-*|-W*|-mimpure-text)                      ;;
3506             -shared)              echo -G                 ;;
3507             *)                    echo $flag              ;;
3508         esac
3509     done
3510 }
3511
3512 tms470_flags(){
3513     for flag; do
3514         case $flag in
3515             -march=*|-mcpu=*)
3516                 case "${flag#*=}" in
3517                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3518                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3519                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3520                     armv6*|arm11*)          echo -mv=6   ;;
3521                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3522                                             echo -mv=5e  ;;
3523                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3524                 esac
3525                 ;;
3526             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3527             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3528             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3529             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3530             -msoft-float)   echo --float_support=vfplib       ;;
3531             -O[0-3]|-mf=*)  echo $flag                        ;;
3532             -g)             echo -g -mn                       ;;
3533             -pds=*)         echo $flag                        ;;
3534             -D*|-I*)        echo $flag                        ;;
3535             --gcc|--abi=*)  echo $flag                        ;;
3536             -me)            echo $flag                        ;;
3537         esac
3538     done
3539 }
3540
3541 probe_cc(){
3542     pfx=$1
3543     _cc=$2
3544
3545     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3546     unset _ld_o _ldflags _ld_lib _ld_path
3547     unset _depflags _DEPCMD _DEPFLAGS
3548     _flags_filter=echo
3549
3550     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3551         true # no-op to avoid reading stdin in following checks
3552     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3553         _type=llvm_gcc
3554         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3555         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3556         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3557         _cflags_speed='-O3'
3558         _cflags_size='-Os'
3559     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3560         _type=gcc
3561         gcc_version=$($_cc --version | head -n1)
3562         gcc_basever=$($_cc -dumpversion)
3563         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3564         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3565         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3566         if ! $_cc -dumpversion | grep -q '^2\.'; then
3567             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3568         fi
3569         _cflags_speed='-O3'
3570         _cflags_size='-Os'
3571     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3572         _type=icc
3573         _ident=$($_cc --version | head -n1)
3574         _depflags='-MMD'
3575         _cflags_speed='-O3'
3576         _cflags_size='-Os'
3577         _cflags_noopt='-O1'
3578         _flags_filter=icc_flags
3579     elif $_cc -v 2>&1 | grep -q xlc; then
3580         _type=xlc
3581         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3582         _cflags_speed='-O5'
3583         _cflags_size='-O5 -qcompact'
3584     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3585         _type=ccc
3586         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3587         _DEPFLAGS='-M'
3588         _cflags_speed='-fast'
3589         _cflags_size='-O1'
3590         _flags_filter=ccc_flags
3591     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3592         test -d "$sysroot" || die "No valid sysroot specified."
3593         _type=armcc
3594         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3595         armcc_conf="$PWD/armcc.conf"
3596         $_cc --arm_linux_configure                 \
3597              --arm_linux_config_file="$armcc_conf" \
3598              --configure_sysroot="$sysroot"        \
3599              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3600              die "Error creating armcc configuration file."
3601         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3602         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3603         as_default="${cross_prefix}gcc"
3604         _depflags='-MMD'
3605         _cflags_speed='-O3'
3606         _cflags_size='-Os'
3607     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3608         _type=tms470
3609         _ident=$($_cc -version | head -n1 | tr -s ' ')
3610         _flags='--gcc --abi=eabi -me'
3611         _cc_e='-ppl -fe=$@'
3612         _cc_o='-fe=$@'
3613         _depflags='-ppa -ppd=$(@:.o=.d)'
3614         _cflags_speed='-O3 -mf=5'
3615         _cflags_size='-O3 -mf=2'
3616         _flags_filter=tms470_flags
3617     elif $_cc -v 2>&1 | grep -q clang; then
3618         _type=clang
3619         _ident=$($_cc --version 2>/dev/null | head -n1)
3620         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3621         _cflags_speed='-O3'
3622         _cflags_size='-Os'
3623     elif $_cc -V 2>&1 | grep -q Sun; then
3624         _type=suncc
3625         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3626         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3627         _DEPFLAGS='-xM1 -xc99'
3628         _ldflags='-std=c99'
3629         _cflags_speed='-O5'
3630         _cflags_size='-O5 -xspace'
3631         _flags_filter=suncc_flags
3632     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3633         _type=pathscale
3634         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3635         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3636         _cflags_speed='-O2'
3637         _cflags_size='-Os'
3638         _flags_filter='filter_out -Wdisabled-optimization'
3639     elif $_cc -v 2>&1 | grep -q Open64; then
3640         _type=open64
3641         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3642         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3643         _cflags_speed='-O2'
3644         _cflags_size='-Os'
3645         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3646     elif $_cc -V 2>&1 | grep -q Portland; then
3647         _type=pgi
3648         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3649         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3650         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3651         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3652         _cflags_noopt="-O"
3653         _flags_filter=pgi_flags
3654     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3655         _type=armasm
3656         _ident=$($_cc | head -n1)
3657         # 4509: "This form of conditional instruction is deprecated"
3658         _flags="-nologo -ignore 4509"
3659         _flags_filter=armasm_flags
3660     elif $_cc 2>&1 | grep -q Intel; then
3661         _type=icl
3662         _ident=$($_cc 2>&1 | head -n1)
3663         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3664         # Not only is O3 broken on 13.x+ but it is slower on all previous
3665         # versions (tested) as well.
3666         _cflags_speed="-O2"
3667         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3668         if $_cc 2>&1 | grep -q Linker; then
3669             _ld_o='-out:$@'
3670         else
3671             _ld_o='-Fe$@'
3672         fi
3673         _cc_o='-Fo$@'
3674         _cc_e='-P'
3675         _flags_filter=icl_flags
3676         _ld_lib='lib%.a'
3677         _ld_path='-libpath:'
3678         # -Qdiag-error to make icl error when seeing certain unknown arguments
3679         _flags='-nologo -Qdiag-error:4044,10157'
3680         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3681         # with MSVC which enables it by default.
3682         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3683         disable stripping
3684     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3685         _type=msvc
3686         _ident=$($_cc 2>&1 | head -n1)
3687         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3688         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3689         _cflags_speed="-O2"
3690         _cflags_size="-O1"
3691         if $_cc -nologo- 2>&1 | grep -q Linker; then
3692             _ld_o='-out:$@'
3693         else
3694             _ld_o='-Fe$@'
3695         fi
3696         _cc_o='-Fo$@'
3697         _cc_e='-P -Fi$@'
3698         _flags_filter=msvc_flags
3699         _ld_lib='lib%.a'
3700         _ld_path='-libpath:'
3701         _flags='-nologo'
3702         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS'
3703         disable stripping
3704     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3705         _type=cparser
3706         _ident=$($_cc --version | head -n1)
3707         _depflags='-MMD'
3708         _cflags_speed='-O4'
3709         _cflags_size='-O2'
3710         _flags_filter=cparser_flags
3711     fi
3712
3713     eval ${pfx}_type=\$_type
3714     eval ${pfx}_ident=\$_ident
3715 }
3716
3717 set_ccvars(){
3718     eval ${1}_C=\${_cc_c-\${${1}_C}}
3719     eval ${1}_E=\${_cc_e-\${${1}_E}}
3720     eval ${1}_O=\${_cc_o-\${${1}_O}}
3721
3722     if [ -n "$_depflags" ]; then
3723         eval ${1}_DEPFLAGS=\$_depflags
3724     else
3725         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3726         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3727         eval DEP${1}FLAGS=\$_flags
3728     fi
3729 }
3730
3731 probe_cc cc "$cc"
3732 cflags_filter=$_flags_filter
3733 cflags_speed=$_cflags_speed
3734 cflags_size=$_cflags_size
3735 cflags_noopt=$_cflags_noopt
3736 add_cflags $_flags $_cflags
3737 cc_ldflags=$_ldflags
3738 set_ccvars CC
3739
3740 probe_cc hostcc "$host_cc"
3741 host_cflags_filter=$_flags_filter
3742 add_host_cflags  $_flags $_cflags
3743 set_ccvars HOSTCC
3744
3745 test -n "$cc_type" && enable $cc_type ||
3746     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3747
3748 : ${as_default:=$cc}
3749 : ${dep_cc_default:=$cc}
3750 : ${ld_default:=$cc}
3751 : ${host_ld_default:=$host_cc}
3752 set_default ar as dep_cc ld host_ld windres
3753
3754 probe_cc as "$as"
3755 asflags_filter=$_flags_filter
3756 add_asflags $_flags $_cflags
3757 set_ccvars AS
3758
3759 probe_cc ld "$ld"
3760 ldflags_filter=$_flags_filter
3761 add_ldflags $_flags $_ldflags
3762 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3763 LD_O=${_ld_o-$LD_O}
3764 LD_LIB=${_ld_lib-$LD_LIB}
3765 LD_PATH=${_ld_path-$LD_PATH}
3766
3767 probe_cc hostld "$host_ld"
3768 host_ldflags_filter=$_flags_filter
3769 add_host_ldflags $_flags $_ldflags
3770 HOSTLD_O=${_ld_o-$HOSTLD_O}
3771
3772 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3773     probe_cc depcc "$dep_cc"
3774     CCDEP=${_DEPCMD:-$DEPCMD}
3775     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3776     DEPCCFLAGS=$_flags
3777 fi
3778
3779 if $ar 2>&1 | grep -q Microsoft; then
3780     arflags="-nologo"
3781     ar_o='-out:$@'
3782 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3783     arflags="rq"
3784     ar_o='$@'
3785 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3786     arflags='-Xany -r -c'
3787     ar_o='$@'
3788 elif $ar 2>&1 | grep -q "\[D\] "; then
3789     arflags="rcD"
3790     ar_o='$@'
3791 else
3792     arflags="rc"
3793     ar_o='$@'
3794 fi
3795
3796 add_cflags $extra_cflags
3797 add_cxxflags $extra_cxxflags
3798 add_asflags $extra_cflags
3799
3800 if test -n "$sysroot"; then
3801     case "$cc_type" in
3802         gcc|llvm_gcc|clang)
3803             add_cppflags --sysroot="$sysroot"
3804             add_ldflags --sysroot="$sysroot"
3805 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3806             add_cppflags -isysroot "$sysroot"
3807             add_ldflags -isysroot "$sysroot"
3808         ;;
3809         tms470)
3810             add_cppflags -I"$sysinclude"
3811             add_ldflags  --sysroot="$sysroot"
3812         ;;
3813     esac
3814 fi
3815
3816 if test "$cpu" = host; then
3817     enabled cross_compile &&
3818         die "--cpu=host makes no sense when cross-compiling."
3819
3820     case "$cc_type" in
3821         gcc|llvm_gcc)
3822             check_native(){
3823                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3824                 sed -n "/cc1.*$1=/{
3825                             s/.*$1=\\([^ ]*\\).*/\\1/
3826                             p
3827                             q
3828                         }" $TMPE
3829             }
3830             cpu=$(check_native -march || check_native -mcpu)
3831         ;;
3832     esac
3833
3834     test "${cpu:-host}" = host &&
3835         die "--cpu=host not supported with compiler $cc"
3836 fi
3837
3838 # Deal with common $arch aliases
3839 case "$arch" in
3840     aarch64|arm64)
3841         arch="aarch64"
3842     ;;
3843     arm*|iPad*|iPhone*)
3844         arch="arm"
3845     ;;
3846     mips*|IP*)
3847         arch="mips"
3848     ;;
3849     parisc*|hppa*)
3850         arch="parisc"
3851     ;;
3852     "Power Macintosh"|ppc*|powerpc*)
3853         arch="ppc"
3854     ;;
3855     s390|s390x)
3856         arch="s390"
3857     ;;
3858     sh4|sh)
3859         arch="sh4"
3860     ;;
3861     sun4u|sparc*)
3862         arch="sparc"
3863     ;;
3864     tilegx|tile-gx)
3865         arch="tilegx"
3866     ;;
3867     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3868         arch="x86"
3869     ;;
3870 esac
3871
3872 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3873 enable $arch
3874
3875 # Add processor-specific flags
3876 if enabled aarch64; then
3877
3878     case $cpu in
3879         armv*)
3880             cpuflags="-march=$cpu"
3881         ;;
3882         *)
3883             cpuflags="-mcpu=$cpu"
3884         ;;
3885     esac
3886
3887 elif enabled alpha; then
3888
3889     cpuflags="-mcpu=$cpu"
3890
3891 elif enabled arm; then
3892
3893     check_arm_arch() {
3894         check_cpp_condition stddef.h \
3895             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3896             $cpuflags
3897     }
3898
3899     probe_arm_arch() {
3900         if   check_arm_arch 4;        then echo armv4;
3901         elif check_arm_arch 4T;       then echo armv4t;
3902         elif check_arm_arch 5;        then echo armv5;
3903         elif check_arm_arch 5E;       then echo armv5e;
3904         elif check_arm_arch 5T;       then echo armv5t;
3905         elif check_arm_arch 5TE;      then echo armv5te;
3906         elif check_arm_arch 5TEJ;     then echo armv5te;
3907         elif check_arm_arch 6;        then echo armv6;
3908         elif check_arm_arch 6J;       then echo armv6j;
3909         elif check_arm_arch 6K;       then echo armv6k;
3910         elif check_arm_arch 6Z;       then echo armv6z;
3911         elif check_arm_arch 6ZK;      then echo armv6zk;
3912         elif check_arm_arch 6T2;      then echo armv6t2;
3913         elif check_arm_arch 7;        then echo armv7;
3914         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3915         elif check_arm_arch 7S;       then echo armv7-a;
3916         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3917         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3918         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3919         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3920         fi
3921     }
3922
3923     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3924
3925     case $cpu in
3926         armv*)
3927             cpuflags="-march=$cpu"
3928             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3929         ;;
3930         *)
3931             cpuflags="-mcpu=$cpu"
3932             case $cpu in
3933                 cortex-a*)                               subarch=armv7a  ;;
3934                 cortex-r*)                               subarch=armv7r  ;;
3935                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3936                 arm11*)                                  subarch=armv6   ;;
3937                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3938                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3939                 *)                             subarch=$(probe_arm_arch) ;;
3940             esac
3941         ;;
3942     esac
3943
3944     case "$subarch" in
3945         armv5t*)    enable fast_clz                ;;
3946         armv[6-8]*)
3947             enable fast_clz
3948             disabled fast_unaligned || enable fast_unaligned
3949             ;;
3950     esac
3951
3952 elif enabled avr32; then
3953
3954     case $cpu in
3955         ap7[02]0[0-2])
3956             subarch="avr32_ap"
3957             cpuflags="-mpart=$cpu"
3958         ;;
3959         ap)
3960             subarch="avr32_ap"
3961             cpuflags="-march=$cpu"
3962         ;;
3963         uc3[ab]*)
3964             subarch="avr32_uc"
3965             cpuflags="-mcpu=$cpu"
3966         ;;
3967         uc)
3968             subarch="avr32_uc"
3969             cpuflags="-march=$cpu"
3970         ;;
3971     esac
3972
3973 elif enabled bfin; then
3974
3975     cpuflags="-mcpu=$cpu"
3976
3977 elif enabled mips; then
3978
3979     cpuflags="-march=$cpu"
3980
3981     case $cpu in
3982         24kc)
3983             disable mips32r5
3984             disable mips64r6
3985             disable mipsfpu
3986             disable mipsdspr1
3987             disable mipsdspr2
3988             disable msa
3989         ;;
3990         24kf*)
3991             disable mips32r5
3992             disable mips64r6
3993             disable mipsdspr1
3994             disable mipsdspr2
3995             disable msa
3996         ;;
3997         24kec|34kc|1004kc)
3998             disable mips32r5
3999             disable mips64r6
4000             disable mipsfpu
4001             disable mipsdspr2
4002             disable msa
4003         ;;
4004         24kef*|34kf*|1004kf*)
4005             disable mips32r5
4006             disable mips64r6
4007             disable mipsdspr2
4008             disable msa
4009         ;;
4010         74kc)
4011             disable mips32r5
4012             disable mips64r6
4013             disable mipsfpu
4014             disable msa
4015         ;;
4016         74kf)
4017             disable mips32r5
4018             disable mips64r6
4019             disable msa
4020         ;;
4021         p5600)
4022             disable mips64r6
4023             disable mipsdspr1
4024             disable mipsdspr2
4025
4026             check_cflags "-mtune=p5600"
4027         ;;
4028         i6400)
4029             disable mips32r5
4030             disable mipsdspr1
4031             disable mipsdspr2
4032             disable mipsfpu
4033
4034             check_cflags "-mtune=i6400 -mabi=64"
4035             check_ldflags "-mabi=64"
4036         ;;
4037         loongson*)
4038             disable mipsfpu
4039             disable mips32r2
4040             disable mips32r5
4041             disable mips64r6
4042             disable mipsdspr1
4043             disable mipsdspr2
4044             disable msa
4045             enable local_aligned_8 local_aligned_16 local_aligned_32
4046             enable simd_align_16
4047             enable fast_64bit
4048             enable fast_clz
4049             enable fast_cmov
4050             enable fast_unaligned
4051             disable aligned_stack
4052             case $cpu in
4053                 loongson3*)
4054                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4055                 ;;
4056                 loongson2e)
4057                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4058                 ;;
4059                 loongson2f)
4060                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4061                 ;;
4062             esac
4063         ;;
4064         generic)
4065             disable mips32r5
4066             disable mips64r6
4067             disable msa
4068         ;;
4069     esac
4070
4071 elif enabled ppc; then
4072
4073     disable ldbrx
4074
4075     case $(tolower $cpu) in
4076         601|ppc601|powerpc601)
4077             cpuflags="-mcpu=601"
4078             disable altivec
4079         ;;
4080         603*|ppc603*|powerpc603*)
4081             cpuflags="-mcpu=603"
4082             disable altivec
4083         ;;
4084         604*|ppc604*|powerpc604*)
4085             cpuflags="-mcpu=604"
4086             disable altivec
4087         ;;
4088         g3|75*|ppc75*|powerpc75*)
4089             cpuflags="-mcpu=750"
4090             disable altivec
4091         ;;
4092         g4|745*|ppc745*|powerpc745*)
4093             cpuflags="-mcpu=7450"
4094             disable vsx
4095         ;;
4096         74*|ppc74*|powerpc74*)
4097             cpuflags="-mcpu=7400"
4098             disable vsx
4099         ;;
4100         g5|970|ppc970|powerpc970)
4101             cpuflags="-mcpu=970"
4102             disable vsx
4103         ;;
4104         power[3-6]*)
4105             cpuflags="-mcpu=$cpu"
4106             disable vsx
4107         ;;
4108         power[7-8]*)
4109             cpuflags="-mcpu=$cpu"
4110         ;;
4111         cell)
4112             cpuflags="-mcpu=cell"
4113             enable ldbrx
4114             disable vsx
4115         ;;
4116         e500mc)
4117             cpuflags="-mcpu=e500mc"
4118             disable altivec
4119         ;;
4120         e500v2)
4121             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4122             disable altivec
4123             disable dcbzl
4124         ;;
4125         e500)
4126             cpuflags="-mcpu=8540 -mhard-float"
4127             disable altivec
4128             disable dcbzl
4129         ;;
4130     esac
4131
4132 elif enabled sparc; then
4133
4134     case $cpu in
4135         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4136             cpuflags="-mcpu=$cpu"
4137         ;;
4138         ultrasparc*|niagara[234])
4139             cpuflags="-mcpu=$cpu"
4140         ;;
4141     esac
4142
4143 elif enabled x86; then
4144
4145     case $cpu in
4146         i[345]86|pentium)
4147             cpuflags="-march=$cpu"
4148             disable i686
4149             disable mmx
4150         ;;
4151         # targets that do NOT support nopl and conditional mov (cmov)
4152         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4153             cpuflags="-march=$cpu"
4154             disable i686
4155         ;;
4156         # targets that do support nopl and conditional mov (cmov)
4157         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4158         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4159             cpuflags="-march=$cpu"
4160             enable i686
4161             enable fast_cmov
4162         ;;
4163         # targets that do support conditional mov but on which it's slow
4164         pentium4|pentium4m|prescott|nocona)
4165             cpuflags="-march=$cpu"
4166             enable i686
4167             disable fast_cmov
4168         ;;
4169     esac
4170
4171 fi
4172
4173 if [ "$cpu" != generic ]; then
4174     add_cflags  $cpuflags
4175     add_asflags $cpuflags
4176 fi
4177
4178 # compiler sanity check
4179 check_exec <<EOF
4180 int main(void){ return 0; }
4181 EOF
4182 if test "$?" != 0; then
4183     echo "$cc is unable to create an executable file."
4184     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4185         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4186         echo "Only do this if you know what cross compiling means."
4187     fi
4188     die "C compiler test failed."
4189 fi
4190
4191 add_cppflags -D_ISOC99_SOURCE
4192 add_cxxflags -D__STDC_CONSTANT_MACROS
4193 check_cflags -std=c99
4194 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4195 #include <stdlib.h>
4196 EOF
4197 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4198 #include <stdlib.h>
4199 EOF
4200
4201 add_host_cppflags -D_ISOC99_SOURCE
4202 check_host_cflags -std=c99
4203 check_host_cflags -Wall
4204 check_host_cflags -O3
4205
4206 check_64bit(){
4207     arch32=$1
4208     arch64=$2
4209     expr=$3
4210     check_code cc "" "int test[2*($expr) - 1]" &&
4211         subarch=$arch64 || subarch=$arch32
4212 }
4213
4214 case "$arch" in
4215     aarch64|alpha|ia64)
4216         spic=$shared
4217     ;;
4218     mips)
4219         check_64bit mips mips64 '_MIPS_SIM > 1'
4220         spic=$shared
4221     ;;
4222     parisc)
4223         check_64bit parisc parisc64 'sizeof(void *) > 4'
4224         spic=$shared
4225     ;;
4226     ppc)
4227         check_64bit ppc ppc64 'sizeof(void *) > 4'
4228         spic=$shared
4229     ;;
4230     s390)
4231         check_64bit s390 s390x 'sizeof(void *) > 4'
4232         spic=$shared
4233     ;;
4234     sparc)
4235         check_64bit sparc sparc64 'sizeof(void *) > 4'
4236         spic=$shared
4237     ;;
4238     x86)
4239         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4240         # Treat x32 as x64 for now. Note it also needs spic=$shared
4241         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4242             subarch=x86_64
4243         if test "$subarch" = "x86_64"; then
4244             spic=$shared
4245         fi
4246     ;;
4247     ppc)
4248         check_cc <<EOF && subarch="ppc64"
4249         int test[(int)sizeof(char*) - 7];
4250 EOF
4251     ;;
4252 esac
4253
4254 enable $subarch
4255 enabled spic && enable_weak pic
4256
4257 # OS specific
4258 case $target_os in
4259     aix)
4260         SHFLAGS=-shared
4261         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4262         enabled shared && add_ldflags -Wl,-brtl
4263         ;;
4264     android)
4265         disable symver
4266         enable section_data_rel_ro
4267         SLIB_INSTALL_NAME='$(SLIBNAME)'
4268         SLIB_INSTALL_LINKS=
4269         # soname not set on purpose
4270         SHFLAGS=-shared
4271         ;;
4272     haiku)
4273         prefix_default="/boot/common"
4274         network_extralibs="-lnetwork"
4275         host_libs=
4276         ;;
4277     sunos)
4278         SHFLAGS='-shared -Wl,-h,$$(@F)'
4279         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4280         network_extralibs="-lsocket -lnsl"
4281         add_cppflags -D__EXTENSIONS__
4282         # When using suncc to build, the Solaris linker will mark
4283         # an executable with each instruction set encountered by
4284         # the Solaris assembler.  As our libraries contain their own
4285         # guards for processor-specific code, instead suppress
4286         # generation of the HWCAPS ELF section on Solaris x86 only.
4287         enabled_all suncc x86 &&
4288             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4289             add_ldflags -Wl,-M,mapfile
4290         nm_default='nm -P -g'
4291         ;;
4292     netbsd)
4293         disable symver
4294         oss_indev_extralibs="-lossaudio"
4295         oss_outdev_extralibs="-lossaudio"
4296         enabled gcc || check_ldflags -Wl,-zmuldefs
4297         ;;
4298     openbsd|bitrig)
4299         disable symver
4300         SHFLAGS='-shared'
4301         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4302         SLIB_INSTALL_LINKS=
4303         oss_indev_extralibs="-lossaudio"
4304         oss_outdev_extralibs="-lossaudio"
4305         ;;
4306     dragonfly)
4307         disable symver
4308         ;;
4309     freebsd)
4310         ;;
4311     bsd/os)
4312         add_extralibs -lpoll -lgnugetopt
4313         strip="strip -d"
4314         ;;
4315     darwin)
4316         enabled ppc && add_asflags -force_cpusubtype_ALL
4317         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4318         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4319         strip="${strip} -x"
4320         add_ldflags -Wl,-dynamic,-search_paths_first
4321         SLIBSUF=".dylib"
4322         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4323         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4324         objformat="macho"
4325         enabled x86_64 && objformat="macho64"
4326         enabled_any pic shared x86_64 ||
4327             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4328         ;;
4329     mingw32*)
4330         if test $target_os = "mingw32ce"; then
4331             disable network
4332         else
4333             target_os=mingw32
4334         fi
4335         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4336         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4337         LIBTARGET=i386
4338         if enabled x86_64; then
4339             LIBTARGET="i386:x86-64"
4340         elif enabled arm; then
4341             LIBTARGET=arm-wince
4342         fi
4343         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4344         check_ldflags -Wl,--nxcompat
4345         check_ldflags -Wl,--dynamicbase
4346         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4347         shlibdir_default="$bindir_default"
4348         SLIBPREF=""
4349         SLIBSUF=".dll"
4350         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4351         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4352         dlltool="${cross_prefix}dlltool"
4353         if check_cmd lib.exe -list; then
4354             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4355             if enabled x86_64; then
4356                 LIBTARGET=x64
4357             fi
4358         elif check_cmd $dlltool --version; then
4359             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4360         fi
4361         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4362         SLIB_INSTALL_LINKS=
4363         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4364         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4365         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4366         objformat="win32"
4367         ranlib=:
4368         enable dos_paths
4369         ;;
4370     win32|win64)
4371         disable symver
4372         if enabled shared; then
4373             # Link to the import library instead of the normal static library
4374             # for shared libs.
4375             LD_LIB='%.lib'
4376             # Cannot build both shared and static libs with MSVC or icl.
4377             disable static
4378         fi
4379         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4380         shlibdir_default="$bindir_default"
4381         SLIBPREF=""
4382         SLIBSUF=".dll"
4383         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4384         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4385         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4386         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4387         SLIB_INSTALL_LINKS=
4388         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4389         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4390         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4391         objformat="win32"
4392         ranlib=:
4393         enable dos_paths
4394         ;;
4395     cygwin*)
4396         target_os=cygwin
4397         shlibdir_default="$bindir_default"
4398         SLIBPREF="cyg"
4399         SLIBSUF=".dll"
4400         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4401         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4402         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4403         SLIB_INSTALL_LINKS=
4404         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4405         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4406         objformat="win32"
4407         enable dos_paths
4408         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4409         ;;
4410     *-dos|freedos|opendos)
4411         network_extralibs="-lsocket"
4412         objformat="coff"
4413         enable dos_paths
4414         add_cppflags -U__STRICT_ANSI__
4415         ;;
4416     linux)
4417         enable dv1394
4418         enable section_data_rel_ro
4419         ;;
4420     irix*)
4421         target_os=irix
4422         ranlib="echo ignoring ranlib"
4423         ;;
4424     os/2*)
4425         strip="lxlite -CS"
4426         ln_s="cp -f"
4427         objformat="aout"
4428         add_cppflags -D_GNU_SOURCE
4429         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4430         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4431         LIBSUF="_s.a"
4432         SLIBPREF=""
4433         SLIBSUF=".dll"
4434         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4435         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4436         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4437             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4438             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4439             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4440             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4441         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4442             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4443         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4444         enable dos_paths
4445         enable_weak os2threads
4446         ;;
4447     gnu/kfreebsd)
4448         add_cppflags -D_BSD_SOURCE
4449         ;;
4450     gnu)
4451         ;;
4452     qnx)
4453         add_cppflags -D_QNX_SOURCE
4454         network_extralibs="-lsocket"
4455         ;;
4456     symbian)
4457         SLIBSUF=".dll"
4458         enable dos_paths
4459         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4460         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4461         add_ldflags -Wl,--target1-abs,--no-undefined \
4462                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4463                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4464         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4465                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4466                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4467         ;;
4468     osf1)
4469         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4470         ;;
4471     minix)
4472         ;;
4473     plan9)
4474         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4475                      -D_REENTRANT_SOURCE        \
4476                      -D_RESEARCH_SOURCE         \
4477                      -DFD_SETSIZE=96            \
4478                      -DHAVE_SOCK_OPTS
4479         add_compat strtod.o strtod=avpriv_strtod
4480         network_extralibs='-lbsd'
4481         exeobjs=compat/plan9/main.o
4482         disable ffserver
4483         cp_f='cp'
4484         ;;
4485     none)
4486         ;;
4487     *)
4488         die "Unknown OS '$target_os'."
4489         ;;
4490 esac
4491
4492 # determine libc flavour
4493
4494 probe_libc(){
4495     pfx=$1
4496     pfx_no_=${pfx%_}
4497     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4498     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4499         eval ${pfx}libc_type=uclibc
4500         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4501     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4502         eval ${pfx}libc_type=glibc
4503         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4504     # MinGW headers can be installed on Cygwin, so check for newlib first.
4505     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4506         eval ${pfx}libc_type=newlib
4507         add_${pfx}cppflags -U__STRICT_ANSI__
4508     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4509     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4510         eval ${pfx}libc_type=mingw64
4511         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4512             add_compat msvcrt/snprintf.o
4513             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4514         fi
4515         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4516         eval test \$${pfx_no_}cc_type = "gcc" &&
4517             add_${pfx}cppflags -D__printf__=__gnu_printf__
4518     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4519          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4520         eval ${pfx}libc_type=mingw32
4521         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4522             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4523             die "ERROR: MinGW32 runtime version must be >= 3.15."
4524         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4525         eval test \$${pfx_no_}cc_type = "gcc" &&
4526             add_${pfx}cppflags -D__printf__=__gnu_printf__
4527     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4528         eval ${pfx}libc_type=msvcrt
4529         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4530             if [ "$pfx" = host_ ]; then
4531                 add_host_cppflags -Dsnprintf=_snprintf
4532             else
4533                 add_compat strtod.o strtod=avpriv_strtod
4534                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4535                                              _snprintf=avpriv_snprintf  \
4536                                              vsnprintf=avpriv_vsnprintf
4537             fi
4538         fi
4539         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4540         # 0x601 by default unless something else is set by the user.
4541         # This can easily lead to us detecting functions only present
4542         # in such new versions and producing binaries requiring windows 7.0.
4543         # Therefore explicitly set the default to XP unless the user has
4544         # set something else on the command line.
4545         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4546         # family. For these cases, configure is free to use any functions
4547         # found in the SDK headers by default. (Alternatively, we could force
4548         # _WIN32_WINNT to 0x0602 in that case.)
4549         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4550             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4551 #ifdef WINAPI_FAMILY
4552 #include <winapifamily.h>
4553 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4554 #error not desktop
4555 #endif
4556 #endif
4557 EOF
4558     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4559         eval ${pfx}libc_type=klibc
4560     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4561         eval ${pfx}libc_type=bionic
4562     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4563         eval ${pfx}libc_type=solaris
4564         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4565     fi
4566     check_${pfx}cc <<EOF
4567 #include <time.h>
4568 void *v = localtime_r;
4569 EOF
4570 test "$?" != 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
4571 #include <time.h>
4572 void *v = localtime_r;
4573 EOF
4574
4575 }
4576
4577 probe_libc
4578 test -n "$libc_type" && enable libc_$libc_type
4579 probe_libc host_
4580 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4581
4582 case $libc_type in
4583     bionic)
4584         add_compat strtod.o strtod=avpriv_strtod
4585         ;;
4586 esac
4587
4588 # hacks for compiler/libc/os combinations
4589
4590 if enabled_all tms470 libc_glibc; then
4591     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4592     add_cppflags -D__USER_LABEL_PREFIX__=
4593     add_cppflags -D__builtin_memset=memset
4594     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4595     add_cflags   -pds=48    # incompatible redefinition of macro
4596 fi
4597
4598 if enabled_all ccc libc_glibc; then
4599     add_ldflags -Wl,-z,now  # calls to libots crash without this
4600 fi
4601
4602 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4603     add_cppflags '-I\$(SRC_PATH)/compat/float'
4604
4605 esc(){
4606     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4607 }
4608
4609 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4610
4611 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4612
4613 set_default libdir
4614 : ${shlibdir_default:="$libdir"}
4615 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4616
4617 set_default $PATHS_LIST
4618 set_default nm
4619
4620 # we need to build at least one lib type
4621 if ! enabled_any static shared; then
4622     cat <<EOF
4623 At least one library type must be built.
4624 Specify --enable-static to build the static libraries or --enable-shared to
4625 build the shared libraries as well. To only build the shared libraries specify
4626 --disable-static in addition to --enable-shared.
4627 EOF
4628     exit 1;
4629 fi
4630
4631 die_license_disabled() {
4632     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4633 }
4634
4635 die_license_disabled_gpl() {
4636     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4637 }
4638
4639 die_license_disabled gpl frei0r
4640 die_license_disabled gpl libcdio
4641 die_license_disabled gpl libsmbclient
4642 die_license_disabled gpl libutvideo
4643 die_license_disabled gpl libvidstab
4644 die_license_disabled gpl libx264
4645 die_license_disabled gpl libx265
4646 die_license_disabled gpl libxavs
4647 die_license_disabled gpl libxvid
4648 die_license_disabled gpl libzvbi
4649 die_license_disabled gpl x11grab
4650
4651 die_license_disabled nonfree libaacplus
4652 die_license_disabled nonfree libfaac
4653 die_license_disabled nonfree nvenc
4654 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4655 enabled gpl && die_license_disabled_gpl nonfree openssl
4656
4657 die_license_disabled version3 libopencore_amrnb
4658 die_license_disabled version3 libopencore_amrwb
4659 die_license_disabled version3 libsmbclient
4660 die_license_disabled version3 libvo_aacenc
4661 die_license_disabled version3 libvo_amrwbenc
4662
4663 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4664
4665 disabled optimizations || check_cflags -fomit-frame-pointer
4666
4667 enable_weak_pic() {
4668     disabled pic && return
4669     enable pic
4670     add_cppflags -DPIC
4671     case "$target_os" in
4672     mingw*|cygwin*)
4673         ;;
4674     *)
4675         add_cflags -fPIC
4676         ;;
4677     esac
4678     add_asflags  -fPIC
4679 }
4680
4681 enabled pic && enable_weak_pic
4682
4683 check_cc <<EOF || die "Symbol mangling check failed."
4684 int ff_extern;
4685 EOF
4686 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4687 extern_prefix=${sym%%ff_extern*}
4688
4689 check_cc <<EOF && enable_weak inline_asm
4690 void foo(void) { __asm__ volatile ("" ::); }
4691 EOF
4692
4693 _restrict=
4694 for restrict_keyword in restrict __restrict__ __restrict; do
4695     check_cc <<EOF && _restrict=$restrict_keyword && break
4696 void foo(char * $restrict_keyword p);
4697 EOF
4698 done
4699
4700 check_cc <<EOF && enable pragma_deprecated
4701 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4702 EOF
4703
4704 check_cc <<EOF && enable attribute_packed
4705 struct { int x; } __attribute__((packed)) x;
4706 EOF
4707
4708 check_cc <<EOF && enable attribute_may_alias
4709 union { int x; } __attribute__((may_alias)) x;
4710 EOF
4711
4712 check_cc <<EOF || die "endian test failed"
4713 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4714 EOF
4715 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4716
4717 if ! enabled ppc64 || enabled bigendian; then
4718     disable vsx
4719 fi
4720
4721 check_gas() {
4722     log "check_gas using '$as' as AS"
4723     # :vararg is used on aarch64, arm and ppc altivec
4724     check_as <<EOF || return 1
4725 .macro m n, y:vararg=0
4726 \n: .int \y
4727 .endm
4728 m x
4729 EOF
4730     # .altmacro is only used in arm asm
4731     ! enabled arm || check_as <<EOF || return 1
4732 .altmacro
4733 EOF
4734     enable gnu_as
4735     return 0
4736 }
4737
4738 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4739     nogas=:
4740     enabled_any arm aarch64 && nogas=die
4741     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4742     as_noop=-v
4743
4744     case $as_type in
4745         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4746         gcc)  gaspp_as_type=gas ;;
4747         *)    gaspp_as_type=$as_type ;;
4748     esac
4749
4750     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4751
4752     test "${as#*gas-preprocessor.pl}" != "$as" ||
4753     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4754         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4755
4756     if ! check_gas ; then
4757         as=${gas:=$as}
4758         check_gas || \
4759             $nogas "GNU assembler not found, install/update gas-preprocessor"
4760     fi
4761
4762     check_as <<EOF && enable as_func
4763 .func test
4764 .endfunc
4765 EOF
4766 fi
4767
4768 check_inline_asm inline_asm_labels '"1:\n"'
4769
4770 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4771
4772 if enabled aarch64; then
4773     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4774     # internal assembler in clang 3.3 does not support this instruction
4775     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4776     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4777
4778     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4779
4780 elif enabled alpha; then
4781
4782     check_cflags -mieee
4783
4784 elif enabled arm; then
4785
4786     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4787
4788     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4789 float func(float a, float b){ return a+b; }
4790 EOF
4791
4792     enabled thumb && check_cflags -mthumb || check_cflags -marm
4793
4794     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4795         enable vfp_args
4796     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4797         enable vfp_args
4798     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4799         case "${cross_prefix:-$cc}" in
4800             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4801             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4802 __asm__ (".eabi_attribute 28, 1");
4803 int main(void) { return 0; }
4804 EOF
4805         esac
4806         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4807     fi
4808
4809     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4810     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4811     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4812     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4813     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4814     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4815     enabled setend  && check_insn setend  'setend be'
4816
4817     [ $target_os = linux ] || [ $target_os = android ] ||
4818         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4819             $ARCH_EXT_LIST_ARM
4820
4821     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4822
4823     check_as <<EOF && enable as_dn_directive
4824 ra .dn d0.i16
4825 .unreq ra
4826 EOF
4827
4828     # llvm's integrated assembler supports .object_arch from llvm 3.5
4829     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4830 .object_arch armv4
4831 EOF
4832
4833     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4834
4835 elif enabled mips; then
4836
4837     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
4838     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
4839     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
4840
4841     # Enable minimum ISA based on selected options
4842     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4843         add_cflags "-mips64r2"
4844         add_asflags "-mips64r2"
4845     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
4846         add_cflags "-mips64"
4847         add_asflags "-mips64"
4848     elif enabled mipsdspr1 || enabled mipsdspr2; then
4849         add_cflags "-mips32r2 -mfp32"
4850         add_asflags "-mips32r2 -mfp32"
4851     elif enabled mips32r5 || enabled mips64r6; then
4852         check_cflags "-mfp64"
4853         check_ldflags "-mfp64"
4854     fi
4855
4856     enabled mips32r5  && check_cflags "-mips32r5 -msched-weight -mload-store-pairs -funroll-loops" &&
4857      check_ldflags "-mips32r5" &&
4858      check_inline_asm mips32r5  '"ulw $t0, ($t1)"'
4859     enabled mips64r6  && check_cflags "-mips64r6 -msched-weight -mload-store-pairs -funroll-loops" &&
4860      check_ldflags "-mips64r6" &&
4861      check_inline_asm mips64r6  '"aui $t0, $t1, 1"'
4862     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4863      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4864     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4865      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4866     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4867      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4868     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
4869      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
4870
4871     enabled mips32r5 && add_asflags "-mips32r5 -mfp64"
4872     enabled mips64r6 && add_asflags "-mips64r6 -mfp64"
4873     enabled msa && add_asflags "-mmsa"
4874
4875 elif enabled parisc; then
4876
4877     if enabled gcc; then
4878         case $($cc -dumpversion) in
4879             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4880         esac
4881     fi
4882
4883 elif enabled ppc; then
4884
4885     enable local_aligned_8 local_aligned_16 local_aligned_32
4886
4887     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4888     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4889     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4890     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4891
4892     # AltiVec flags: The FSF version of GCC differs from the Apple version
4893     if enabled altivec; then
4894         check_cflags -maltivec -mabi=altivec &&
4895         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4896         check_cflags -faltivec
4897
4898         # check if our compiler supports Motorola AltiVec C API
4899         check_cc <<EOF || disable altivec
4900 $inc_altivec_h
4901 int main(void) {
4902     vector signed int v1 = (vector signed int) { 0 };
4903     vector signed int v2 = (vector signed int) { 1 };
4904     v1 = vec_add(v1, v2);
4905     return 0;
4906 }
4907 EOF
4908
4909         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4910     fi
4911
4912     if enabled vsx; then
4913         check_cflags -mvsx &&
4914         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4915     fi
4916
4917     if enabled power8; then
4918         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4919     fi
4920
4921 elif enabled x86; then
4922
4923     check_builtin rdtsc    intrin.h   "__rdtsc()"
4924     check_builtin mm_empty mmintrin.h "_mm_empty()"
4925
4926     enable local_aligned_8 local_aligned_16 local_aligned_32
4927
4928     # check whether EBP is available on x86
4929     # As 'i' is stored on the stack, this program will crash
4930     # if the base pointer is used to access it because the
4931     # base pointer is cleared in the inline assembly code.
4932     check_exec_crash <<EOF && enable ebp_available
4933 volatile int i=0;
4934 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4935 return i;
4936 EOF
4937
4938     # check whether EBX is available on x86
4939     check_inline_asm ebx_available '""::"b"(0)' &&
4940         check_inline_asm ebx_available '"":::"%ebx"'
4941
4942     # check whether xmm clobbers are supported
4943     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4944
4945     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4946         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4947
4948     # check whether binutils is new enough to compile SSSE3/MMXEXT
4949     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4950     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4951
4952     if ! disabled_any asm mmx yasm; then
4953         if check_cmd $yasmexe --version; then
4954             enabled x86_64 && yasm_extra="-m amd64"
4955             yasm_debug="-g dwarf2"
4956         elif check_cmd nasm -v; then
4957             yasmexe=nasm
4958             yasm_debug="-g -F dwarf"
4959             if enabled x86_64; then
4960                 case "$objformat" in
4961                     elf)   objformat=elf64 ;;
4962                     win32) objformat=win64 ;;
4963                 esac
4964             fi
4965         fi
4966
4967         YASMFLAGS="-f $objformat $yasm_extra"
4968         enabled pic               && append YASMFLAGS "-DPIC"
4969         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4970         case "$objformat" in
4971             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4972         esac
4973
4974         check_yasm "movbe ecx, [5]" && enable yasm ||
4975             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4976         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4977         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4978         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4979         check_yasm "CPU amdnop" || disable cpunop
4980     fi
4981
4982     case "$cpu" in
4983         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4984             disable fast_clz
4985         ;;
4986     esac
4987
4988 fi
4989
4990 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4991
4992 check_ldflags -Wl,--as-needed
4993 check_ldflags -Wl,-z,noexecstack
4994
4995 if check_func dlopen; then
4996     ldl=
4997 elif check_func dlopen -ldl; then
4998     ldl=-ldl
4999 fi
5000
5001 frei0r_filter_extralibs='$ldl'
5002 frei0r_src_filter_extralibs='$ldl'
5003 ladspa_filter_extralibs='$ldl'
5004 nvenc_encoder_extralibs='$ldl'
5005
5006 if ! disabled network; then
5007     check_func getaddrinfo $network_extralibs
5008     check_func getservbyport $network_extralibs
5009     check_func inet_aton $network_extralibs
5010
5011     check_type netdb.h "struct addrinfo"
5012     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5013     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5014     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5015     check_type poll.h "struct pollfd"
5016     check_type netinet/sctp.h "struct sctp_event_subscribe"
5017     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5018     check_type netinet/in.h "struct sockaddr_in6"
5019     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5020     check_type "sys/types.h sys/socket.h" socklen_t
5021
5022     # Prefer arpa/inet.h over winsock2
5023     if check_header arpa/inet.h ; then
5024         check_func closesocket
5025     elif check_header winsock2.h ; then
5026         check_func_headers winsock2.h closesocket -lws2 &&
5027             network_extralibs="-lws2" ||
5028         { check_func_headers winsock2.h closesocket -lws2_32 &&
5029             network_extralibs="-lws2_32"; } || disable winsock2_h network
5030         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5031
5032         check_type ws2tcpip.h socklen_t
5033         check_type ws2tcpip.h "struct addrinfo"
5034         check_type ws2tcpip.h "struct group_source_req"
5035         check_type ws2tcpip.h "struct ip_mreq_source"
5036         check_type ws2tcpip.h "struct ipv6_mreq"
5037         check_type winsock2.h "struct pollfd"
5038         check_struct winsock2.h "struct sockaddr" sa_len
5039         check_type ws2tcpip.h "struct sockaddr_in6"
5040         check_type ws2tcpip.h "struct sockaddr_storage"
5041     else
5042         disable network
5043     fi
5044 fi
5045
5046 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5047 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5048 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5049 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5050 check_builtin sarestart signal.h "SA_RESTART"
5051 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5052 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5053 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5054
5055 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5056 check_func  ${malloc_prefix}memalign            && enable memalign
5057 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5058
5059 check_func  access
5060 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5061 check_func  fcntl
5062 check_func  fork
5063 check_func  gethrtime
5064 check_func  getopt
5065 check_func  getrusage
5066 check_func  gettimeofday
5067 check_func  isatty
5068 check_func  mach_absolute_time
5069 check_func  mkstemp
5070 check_func  mmap
5071 check_func  mprotect
5072 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5073 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5074 check_func  sched_getaffinity
5075 check_func  setrlimit
5076 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5077 check_func  strerror_r
5078 check_func  sysconf
5079 check_func  sysctl
5080 check_func  usleep
5081
5082 check_func_headers conio.h kbhit
5083 check_func_headers io.h setmode
5084 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5085 check_func_headers stdlib.h getenv
5086
5087 check_func_headers windows.h CoTaskMemFree -lole32
5088 check_func_headers windows.h GetProcessAffinityMask
5089 check_func_headers windows.h GetProcessTimes
5090 check_func_headers windows.h GetSystemTimeAsFileTime
5091 check_func_headers windows.h MapViewOfFile
5092 check_func_headers windows.h PeekNamedPipe
5093 check_func_headers windows.h SetConsoleTextAttribute
5094 check_func_headers windows.h SetConsoleCtrlHandler
5095 check_func_headers windows.h Sleep
5096 check_func_headers windows.h VirtualAlloc
5097 check_struct windows.h "CONDITION_VARIABLE" Ptr
5098 check_func_headers glob.h glob
5099 enabled xlib &&
5100     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5101
5102 check_header direct.h
5103 check_header dlfcn.h
5104 check_header d3d11.h
5105 check_header dxva.h
5106 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5107 check_header io.h
5108 check_header libcrystalhd/libcrystalhd_if.h
5109 check_header mach/mach_time.h
5110 check_header malloc.h
5111 check_header net/udplite.h
5112 check_header poll.h
5113 check_header sys/mman.h
5114 check_header sys/param.h
5115 check_header sys/resource.h
5116 check_header sys/select.h
5117 check_header sys/time.h
5118 check_header sys/un.h
5119 check_header termios.h
5120 check_header unistd.h
5121 check_header valgrind/valgrind.h
5122 check_header vdpau/vdpau.h
5123 check_header vdpau/vdpau_x11.h
5124 check_header VideoDecodeAcceleration/VDADecoder.h
5125 check_header VideoToolbox/VideoToolbox.h
5126 check_header windows.h
5127 check_header X11/extensions/XvMClib.h
5128 check_header asm/types.h
5129
5130 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5131 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5132 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5133
5134 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5135
5136 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5137 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5138 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5139
5140 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5141
5142 if ! disabled w32threads && ! enabled pthreads; then
5143     check_func_headers "windows.h process.h" _beginthreadex &&
5144         enable w32threads || disable w32threads
5145 fi
5146
5147 # check for some common methods of building with pthread support
5148 # do this before the optional library checks as some of them require pthreads
5149 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5150     enable pthreads
5151     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5152         add_cflags -pthread
5153         add_extralibs -pthread
5154     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5155         add_cflags -pthreads
5156         add_extralibs -pthreads
5157     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5158         add_cflags -ldl -pthread
5159         add_extralibs -ldl -pthread
5160     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5161         add_extralibs -lpthreadGC2
5162     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5163         :
5164     elif ! check_func pthread_join && ! check_func pthread_create; then
5165         disable pthreads
5166     fi
5167     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5168 fi
5169
5170
5171 if enabled pthreads; then
5172   check_func pthread_cancel
5173 fi
5174
5175 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5176 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5177 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5178
5179 check_lib math.h sin -lm && LIBM="-lm"
5180 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5181
5182 atan2f_args=2
5183 copysign_args=2
5184 ldexpf_args=2
5185 powf_args=2
5186
5187 for func in $MATH_FUNCS; do
5188     eval check_mathfunc $func \${${func}_args:-1}
5189 done
5190
5191 # these are off by default, so fail if requested and not available
5192 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5193 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5194                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5195 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5196                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5197                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5198 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5199 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5200 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5201 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5202 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5203 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
5204 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5205 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5206 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5207 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5208                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5209                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5210 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5211 enabled libdcadec         && require_pkg_config dcadec libdcadec/dca_context.h dcadec_context_create &&
5212                              check_struct libdcadec/dca_context.h "struct dcadec_exss_info" matrix_encoding
5213 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5214 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5215                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5216                                  warn "using libfdk without pkg-config"; } }
5217 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"
5218 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5219 enabled fontconfig        && enable libfontconfig
5220 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5221 enabled libfreetype       && require_libfreetype
5222 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5223 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5224 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5225                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5226                                done || die "ERROR: libgsm not found"; }
5227 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5228 enabled libkvazaar        && require2 libkvazaar kvazaar.h kvz_api_get -lkvazaar
5229 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5230 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5231 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5232 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5233 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5234 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5235 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
5236 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5237 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
5238                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5239                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5240                                die "ERROR: libopenjpeg not found"; }
5241 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5242 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5243 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
5244 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5245 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5246 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5247 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5248                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5249 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5250 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5251 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5252 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5253 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
5254     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
5255     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
5256 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5257 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5258                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5259                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5260 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5261 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5262 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5263 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
5264 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5265 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5266
5267 enabled libvpx            && {
5268     enabled libvpx_vp8_decoder && {
5269         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5270             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5271                 die "ERROR: libvpx decoder version must be >=0.9.1";
5272     }
5273     enabled libvpx_vp8_encoder && {
5274         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5275             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5276                 die "ERROR: libvpx encoder version must be >=0.9.7";
5277     }
5278     enabled libvpx_vp9_decoder && {
5279         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5280             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5281                 disable libvpx_vp9_decoder;
5282     }
5283     enabled libvpx_vp9_encoder && {
5284         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5285             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5286                 disable libvpx_vp9_encoder;
5287     }
5288     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5289         die "libvpx enabled but no supported decoders found"
5290     fi
5291 }
5292
5293 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5294 enabled libwebp           && {
5295     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5296     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5297 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5298                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5299                                  warn "using libx264 without pkg-config"; } } &&
5300                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5301                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5302                              { check_cpp_condition x264.h "X264_MPEG2" &&
5303                                enable libx262; }
5304 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5305                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
5306                                die "ERROR: libx265 version must be >= 57."; }
5307 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5308 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5309 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5310 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
5311 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5312                                 { ! enabled cross_compile && {
5313                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5314                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5315                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5316                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5317                                die "ERROR: mmal not found"; }
5318 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5319                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5320                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5321                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5322 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5323                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5324                                die "ERROR: openal not found"; } &&
5325                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5326                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5327 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5328                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5329                                die "ERROR: opencl not found"; } &&
5330                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5331                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5332                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5333 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5334                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5335                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5336                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5337                                die "ERROR: opengl not found."
5338                              }
5339 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5340                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5341                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5342                                die "ERROR: openssl not found"; }
5343 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
5344
5345 if enabled gnutls; then
5346     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
5347     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
5348 fi
5349
5350 # libdc1394 check
5351 if enabled libdc1394; then
5352     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5353         enable libdc1394_2; } ||
5354     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5355         enable libdc1394_1; } ||
5356     die "ERROR: No version of libdc1394 found "
5357 fi
5358 if ! disabled sdl; then
5359     SDL_CONFIG="${cross_prefix}sdl-config"
5360     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5361         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5362         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5363         enable sdl
5364     else
5365         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5366             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5367             sdl_libs=$("${SDL_CONFIG}" --libs)
5368             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5369             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5370             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5371             enable sdl
5372         elif enabled sdl ; then
5373             die "ERROR: SDL not found"
5374         else
5375             disable sdl
5376         fi
5377     fi
5378 fi
5379 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5380
5381 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5382     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5383     enable securetransport; }
5384
5385 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5386 enabled makeinfo \
5387     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5388     && enable makeinfo_html || disable makeinfo_html
5389 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5390 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5391 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5392 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5393
5394 check_header linux/fb.h
5395 check_header linux/videodev.h
5396 check_header linux/videodev2.h
5397 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5398
5399 check_header sys/videoio.h
5400 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5401
5402 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5403 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5404 # w32api 3.12 had it defined wrong
5405 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5406
5407 check_type "dshow.h" IBaseFilter
5408
5409 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5410 { check_header dev/bktr/ioctl_meteor.h &&
5411   check_header dev/bktr/ioctl_bt848.h; } ||
5412 { check_header machine/ioctl_meteor.h &&
5413   check_header machine/ioctl_bt848.h; } ||
5414 { check_header dev/video/meteor/ioctl_meteor.h &&
5415   check_header dev/video/bktr/ioctl_bt848.h; } ||
5416 check_header dev/ic/bt8xx.h
5417
5418 check_header sndio.h
5419 if check_struct sys/soundcard.h audio_buf_info bytes; then
5420     enable_safe sys/soundcard.h
5421 else
5422     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5423     #include <sys/soundcard.h>
5424     audio_buf_info abc;
5425 EOF
5426 fi
5427 check_header soundcard.h
5428
5429 enabled_any alsa_indev alsa_outdev &&
5430     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5431
5432 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5433     check_func jack_port_get_latency_range -ljack
5434
5435 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5436
5437 if enabled libcdio; then
5438     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5439     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5440     die "ERROR: No usable libcdio/cdparanoia found"
5441 fi
5442
5443 enabled xlib &&
5444     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5445
5446 if ! disabled libxcb; then
5447     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5448         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5449     } && disable x11grab && enable libxcb
5450
5451 if enabled libxcb; then
5452     disabled libxcb_shm || {
5453         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5454             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5455         } && check_header sys/shm.h && enable libxcb_shm; }
5456
5457     disabled libxcb_xfixes || {
5458         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5459             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5460         } && enable libxcb_xfixes; }
5461
5462     disabled libxcb_shape || {
5463         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5464             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5465         } && enable libxcb_shape; }
5466
5467     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5468     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5469 fi
5470 fi
5471
5472 if enabled x11grab; then
5473     enabled xlib || die "ERROR: Xlib not found"
5474     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5475     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5476 fi
5477
5478 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5479
5480 enabled dxva2api_h &&
5481     check_cc <<EOF && enable dxva2api_cobj
5482 #define _WIN32_WINNT 0x0600
5483 #define COBJMACROS
5484 #include <windows.h>
5485 #include <d3d9.h>
5486 #include <dxva2api.h>
5487 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5488 EOF
5489
5490 enabled vaapi &&
5491     check_lib va/va.h vaInitialize -lva ||
5492     disable vaapi
5493
5494 enabled vaapi && enabled xlib &&
5495     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5496     enable vaapi_x11
5497
5498 enabled vdpau &&
5499     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5500     disable vdpau
5501
5502 enabled vdpau && enabled xlib &&
5503     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5504     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5505     enable vdpau_x11
5506
5507 # Funny iconv installations are not unusual, so check it after all flags have been set
5508 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5509
5510 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5511
5512 # add some useful compiler flags if supported
5513 check_cflags -Wdeclaration-after-statement
5514 check_cflags -Wall
5515 check_cflags -Wdisabled-optimization
5516 check_cflags -Wpointer-arith
5517 check_cflags -Wredundant-decls
5518 check_cflags -Wwrite-strings
5519 check_cflags -Wtype-limits
5520 check_cflags -Wundef
5521 check_cflags -Wmissing-prototypes
5522 check_cflags -Wno-pointer-to-int-cast
5523 check_cflags -Wstrict-prototypes
5524 check_cflags -Wempty-body
5525 enabled extra_warnings && check_cflags -Winline
5526
5527 check_disable_warning(){
5528     warning_flag=-W${1#-Wno-}
5529     test_cflags $warning_flag && add_cflags $1
5530 }
5531
5532 check_disable_warning -Wno-parentheses
5533 check_disable_warning -Wno-switch
5534 check_disable_warning -Wno-format-zero-length
5535 check_disable_warning -Wno-pointer-sign
5536
5537 # add some linker flags
5538 check_ldflags -Wl,--warn-common
5539 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5540 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5541 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5542 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5543
5544 # add some strip flags
5545 # -wN '..@*' is more selective than -x, but not available everywhere.
5546 check_stripflags -wN \'..@*\' || check_stripflags -x
5547
5548 enabled neon_clobber_test &&
5549     check_ldflags -Wl,--wrap,avcodec_open2              \
5550                   -Wl,--wrap,avcodec_decode_audio4      \
5551                   -Wl,--wrap,avcodec_decode_video2      \
5552                   -Wl,--wrap,avcodec_decode_subtitle2   \
5553                   -Wl,--wrap,avcodec_encode_audio2      \
5554                   -Wl,--wrap,avcodec_encode_video2      \
5555                   -Wl,--wrap,avcodec_encode_subtitle    \
5556                   -Wl,--wrap,swr_convert                \
5557                   -Wl,--wrap,avresample_convert ||
5558     disable neon_clobber_test
5559
5560 enabled xmm_clobber_test &&
5561     check_ldflags -Wl,--wrap,avcodec_open2              \
5562                   -Wl,--wrap,avcodec_decode_audio4      \
5563                   -Wl,--wrap,avcodec_decode_video2      \
5564                   -Wl,--wrap,avcodec_decode_subtitle2   \
5565                   -Wl,--wrap,avcodec_encode_audio2      \
5566                   -Wl,--wrap,avcodec_encode_video       \
5567                   -Wl,--wrap,avcodec_encode_video2      \
5568                   -Wl,--wrap,avcodec_encode_subtitle    \
5569                   -Wl,--wrap,swr_convert                \
5570                   -Wl,--wrap,avresample_convert         \
5571                   -Wl,--wrap,sws_scale ||
5572     disable xmm_clobber_test
5573
5574 echo "X{};" > $TMPV
5575 if test_ldflags -Wl,--version-script,$TMPV; then
5576     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5577     check_cc <<EOF && enable symver_asm_label
5578 void ff_foo(void) __asm__ ("av_foo@VERSION");
5579 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5580 EOF
5581     check_cc <<EOF && enable symver_gnu_asm
5582 __asm__(".symver ff_foo,av_foo@VERSION");
5583 void ff_foo(void) {}
5584 EOF
5585 fi
5586
5587 if [ -z "$optflags" ]; then
5588     if enabled small; then
5589         optflags=$cflags_size
5590     elif enabled optimizations; then
5591         optflags=$cflags_speed
5592     else
5593         optflags=$cflags_noopt
5594     fi
5595 fi
5596
5597 check_optflags(){
5598     check_cflags "$@"
5599     enabled lto && check_ldflags "$@"
5600 }
5601
5602
5603 if enabled lto; then
5604     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5605     check_cflags  -flto
5606     check_ldflags -flto $cpuflags
5607     disable inline_asm_direct_symbol_refs
5608 fi
5609
5610 check_optflags $optflags
5611 check_optflags -fno-math-errno
5612 check_optflags -fno-signed-zeros
5613
5614 enabled ftrapv && check_cflags -ftrapv
5615
5616 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5617 int x;
5618 EOF
5619
5620
5621 if enabled icc; then
5622     # Just warnings, no remarks
5623     check_cflags -w1
5624     # -wd: Disable following warnings
5625     # 144, 167, 556: -Wno-pointer-sign
5626     # 188: enumerated type mixed with another type
5627     # 1292: attribute "foo" ignored
5628     # 1419: external declaration in primary source file
5629     # 10006: ignoring unknown option -fno-signed-zeros
5630     # 10148: ignoring unknown option -Wno-parentheses
5631     # 10156: ignoring option '-W'; no argument required
5632     # 13200: No EMMS instruction before call to function
5633     # 13203: No EMMS instruction before return from function
5634     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5635     # 11030: Warning unknown option --as-needed
5636     # 10156: ignoring option '-export'; no argument required
5637     check_ldflags -wd10156,11030
5638     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5639     enable ebp_available
5640     # The test above does not test linking
5641     enabled lto && disable symver_asm_label
5642     if enabled x86_32; then
5643         icc_version=$($cc -dumpversion)
5644         test ${icc_version%%.*} -ge 11 &&
5645             check_cflags -falign-stack=maintain-16-byte ||
5646             disable aligned_stack
5647     fi
5648 elif enabled ccc; then
5649     # disable some annoying warnings
5650     add_cflags -msg_disable bitnotint
5651     add_cflags -msg_disable mixfuncvoid
5652     add_cflags -msg_disable nonstandcast
5653     add_cflags -msg_disable unsupieee
5654 elif enabled gcc; then
5655     check_optflags -fno-tree-vectorize
5656     check_cflags -Werror=format-security
5657     check_cflags -Werror=implicit-function-declaration
5658     check_cflags -Werror=missing-prototypes
5659     check_cflags -Werror=return-type
5660     check_cflags -Werror=vla
5661     check_cflags -Wformat
5662     check_cflags -fdiagnostics-color=auto
5663     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5664 elif enabled llvm_gcc; then
5665     check_cflags -mllvm -stack-alignment=16
5666 elif enabled clang; then
5667     check_cflags -mllvm -stack-alignment=16
5668     check_cflags -Qunused-arguments
5669     check_cflags -Werror=implicit-function-declaration
5670     check_cflags -Werror=missing-prototypes
5671     check_cflags -Werror=return-type
5672 elif enabled cparser; then
5673     add_cflags -Wno-missing-variable-declarations
5674     add_cflags -Wno-empty-statement
5675 elif enabled armcc; then
5676     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5677     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5678     # 2523: use of inline assembly is deprecated
5679     add_cflags -W${armcc_opt},--diag_suppress=2523
5680     add_cflags -W${armcc_opt},--diag_suppress=1207
5681     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5682     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5683     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5684     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5685 elif enabled tms470; then
5686     add_cflags -pds=824 -pds=837
5687     disable inline_asm
5688 elif enabled pathscale; then
5689     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5690 elif enabled_any msvc icl; then
5691     enabled x86_32 && disable aligned_stack
5692     enabled_all x86_32 debug && add_cflags -Oy-
5693     enabled debug && add_ldflags -debug
5694     enable pragma_deprecated
5695     if enabled icl; then
5696         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5697         # (correctly) on icl 13.x.
5698         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5699             add_cflags -Qansi-alias
5700         # Some inline asm is not compilable in debug
5701         if enabled debug; then
5702             disable ebp_available
5703             disable ebx_available
5704         fi
5705     fi
5706     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5707     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5708     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5709     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5710     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5711     # MSVC 2013 and newer can handle it fine.
5712     # If this declspec fails, force including stdlib.h before the restrict redefinition
5713     # happens in config.h.
5714     if [ $_restrict != restrict ]; then
5715         check_cc <<EOF || add_cflags -FIstdlib.h
5716 __declspec($_restrict) void* foo(int);
5717 EOF
5718     fi
5719     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5720 fi
5721
5722 for pfx in "" host_; do
5723     varname=${pfx%_}cc_type
5724     eval "type=\$$varname"
5725     if [ $type = "msvc" ]; then
5726         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5727 static inline int foo(int a) { return a; }
5728 EOF
5729     fi
5730 done
5731
5732 case $as_type in
5733     clang)
5734         add_asflags -Qunused-arguments
5735     ;;
5736 esac
5737
5738 case $ld_type in
5739     clang)
5740         check_ldflags -Qunused-arguments
5741     ;;
5742 esac
5743
5744 case $target_os in
5745     osf1)
5746         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5747     ;;
5748     plan9)
5749         add_cppflags -Dmain=plan9_main
5750     ;;
5751 esac
5752
5753 enable frame_thread_encoder
5754
5755 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5756
5757 check_deps $CONFIG_LIST       \
5758            $CONFIG_EXTRA      \
5759            $HAVE_LIST         \
5760            $ALL_COMPONENTS    \
5761
5762 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"
5763
5764
5765 if test $target_os = "haiku"; then
5766     disable memalign
5767     disable posix_memalign
5768 fi
5769
5770 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5771     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
5772     enable dxva2_lib
5773
5774 ! enabled_any memalign posix_memalign aligned_malloc &&
5775     enabled simd_align_16 && enable memalign_hack
5776
5777 # add_dep lib dep
5778 # -> enable ${lib}_deps_${dep}
5779 # -> add $dep to ${lib}_deps only once
5780 add_dep() {
5781     lib=$1
5782     dep=$2
5783     enabled "${lib}_deps_${dep}" && return 0
5784     enable  "${lib}_deps_${dep}"
5785     prepend "${lib}_deps" $dep
5786 }
5787
5788 # merge deps lib components
5789 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5790 merge_deps() {
5791     lib=$1
5792     shift
5793     for comp in $*; do
5794         enabled $comp || continue
5795         eval "dep=\"\$${comp}_deps\""
5796         for d in $dep; do
5797             add_dep $lib $d
5798         done
5799     done
5800 }
5801
5802 merge_deps libavfilter $FILTER_LIST
5803
5804 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5805
5806 for thread in $THREADS_LIST; do
5807     if enabled $thread; then
5808         test -n "$thread_type" &&
5809             die "ERROR: Only one thread type must be selected." ||
5810             thread_type="$thread"
5811     fi
5812 done
5813
5814 enabled zlib && add_cppflags -DZLIB_CONST
5815
5816 # conditional library dependencies, in linking order
5817 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5818 enabled aresample_filter    && prepend avfilter_deps "swresample"
5819 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5820 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5821 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
5822 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5823 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5824 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
5825 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
5826 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5827 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5828 enabled pan_filter          && prepend avfilter_deps "swresample"
5829 enabled pp_filter           && prepend avfilter_deps "postproc"
5830 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5831 enabled resample_filter && prepend avfilter_deps "avresample"
5832 enabled sab_filter          && prepend avfilter_deps "swscale"
5833 enabled scale_filter    && prepend avfilter_deps "swscale"
5834 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5835 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5836 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5837 enabled uspp_filter         && prepend avfilter_deps "avcodec"
5838
5839 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5840
5841 enabled opus_decoder    && prepend avcodec_deps "swresample"
5842
5843 expand_deps(){
5844     lib_deps=${1}_deps
5845     eval "deps=\$$lib_deps"
5846     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5847     unique $lib_deps
5848 }
5849
5850 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5851 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5852
5853 map 'expand_deps $v' $LIBRARY_LIST
5854
5855 echo "install prefix            $prefix"
5856 echo "source path               $source_path"
5857 echo "C compiler                $cc"
5858 echo "C library                 $libc_type"
5859 if test "$host_cc" != "$cc"; then
5860     echo "host C compiler           $host_cc"
5861     echo "host C library            $host_libc_type"
5862 fi
5863 echo "ARCH                      $arch ($cpu)"
5864 if test "$build_suffix" != ""; then
5865     echo "build suffix              $build_suffix"
5866 fi
5867 if test "$progs_suffix" != ""; then
5868     echo "progs suffix              $progs_suffix"
5869 fi
5870 if test "$extra_version" != ""; then
5871     echo "version string suffix     $extra_version"
5872 fi
5873 echo "big-endian                ${bigendian-no}"
5874 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5875 if enabled x86; then
5876     echo "${yasmexe}                      ${yasm-no}"
5877     echo "MMX enabled               ${mmx-no}"
5878     echo "MMXEXT enabled            ${mmxext-no}"
5879     echo "3DNow! enabled            ${amd3dnow-no}"
5880     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5881     echo "SSE enabled               ${sse-no}"
5882     echo "SSSE3 enabled             ${ssse3-no}"
5883     echo "AVX enabled               ${avx-no}"
5884     echo "XOP enabled               ${xop-no}"
5885     echo "FMA3 enabled              ${fma3-no}"
5886     echo "FMA4 enabled              ${fma4-no}"
5887     echo "i686 features enabled     ${i686-no}"
5888     echo "CMOV is fast              ${fast_cmov-no}"
5889     echo "EBX available             ${ebx_available-no}"
5890     echo "EBP available             ${ebp_available-no}"
5891 fi
5892 if enabled aarch64; then
5893     echo "NEON enabled              ${neon-no}"
5894     echo "VFP enabled               ${vfp-no}"
5895 fi
5896 if enabled arm; then
5897     echo "ARMv5TE enabled           ${armv5te-no}"
5898     echo "ARMv6 enabled             ${armv6-no}"
5899     echo "ARMv6T2 enabled           ${armv6t2-no}"
5900     echo "VFP enabled               ${vfp-no}"
5901     echo "NEON enabled              ${neon-no}"
5902     echo "THUMB enabled             ${thumb-no}"
5903 fi
5904 if enabled mips; then
5905     echo "MIPS FPU enabled          ${mipsfpu-no}"
5906     echo "MIPS32R5 enabled          ${mips32r5-no}"
5907     echo "MIPS64R6 enabled          ${mips64r6-no}"
5908     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5909     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5910     echo "MIPS MSA enabled          ${msa-no}"
5911     echo "LOONGSON MMI enabled      ${mmi-no}"
5912 fi
5913 if enabled ppc; then
5914     echo "AltiVec enabled           ${altivec-no}"
5915     echo "VSX enabled               ${vsx-no}"
5916     echo "POWER8 enabled            ${power8-no}"
5917     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5918     echo "dcbzl available           ${dcbzl-no}"
5919 fi
5920 echo "debug symbols             ${debug-no}"
5921 echo "strip symbols             ${stripping-no}"
5922 echo "optimize for size         ${small-no}"
5923 echo "optimizations             ${optimizations-no}"
5924 echo "static                    ${static-no}"
5925 echo "shared                    ${shared-no}"
5926 echo "postprocessing support    ${postproc-no}"
5927 echo "new filter support        ${avfilter-no}"
5928 echo "network support           ${network-no}"
5929 echo "threading support         ${thread_type-no}"
5930 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5931 echo "SDL support               ${sdl-no}"
5932 echo "opencl enabled            ${opencl-no}"
5933 echo "texi2html enabled         ${texi2html-no}"
5934 echo "perl enabled              ${perl-no}"
5935 echo "pod2man enabled           ${pod2man-no}"
5936 echo "makeinfo enabled          ${makeinfo-no}"
5937 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5938 test -n "$random_seed" &&
5939     echo "random seed               ${random_seed}"
5940 echo
5941
5942 echo "External libraries:"
5943 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5944 echo
5945
5946 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5947     echo "Enabled ${type}s:"
5948     eval list=\$$(toupper $type)_LIST
5949     print_enabled '_*' $list | print_3_columns
5950     echo
5951 done
5952
5953 license="LGPL version 2.1 or later"
5954 if enabled nonfree; then
5955     license="nonfree and unredistributable"
5956 elif enabled gplv3; then
5957     license="GPL version 3 or later"
5958 elif enabled lgplv3; then
5959     license="LGPL version 3 or later"
5960 elif enabled gpl; then
5961     license="GPL version 2 or later"
5962 fi
5963
5964 echo "License: $license"
5965
5966 echo "Creating config.mak, config.h, and doc/config.texi..."
5967
5968 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5969
5970 enabled stripping || strip="echo skipping strip"
5971
5972 config_files="$TMPH config.mak doc/config.texi"
5973
5974 cat > config.mak <<EOF
5975 # Automatically generated by configure - do not modify!
5976 ifndef FFMPEG_CONFIG_MAK
5977 FFMPEG_CONFIG_MAK=1
5978 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5979 prefix=$prefix
5980 LIBDIR=\$(DESTDIR)$libdir
5981 SHLIBDIR=\$(DESTDIR)$shlibdir
5982 INCDIR=\$(DESTDIR)$incdir
5983 BINDIR=\$(DESTDIR)$bindir
5984 DATADIR=\$(DESTDIR)$datadir
5985 DOCDIR=\$(DESTDIR)$docdir
5986 MANDIR=\$(DESTDIR)$mandir
5987 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
5988 SRC_PATH=$source_path
5989 ifndef MAIN_MAKEFILE
5990 SRC_PATH:=\$(SRC_PATH:.%=..%)
5991 endif
5992 CC_IDENT=$cc_ident
5993 ARCH=$arch
5994 INTRINSICS=$intrinsics
5995 CC=$cc
5996 CXX=$cxx
5997 AS=$as
5998 LD=$ld
5999 DEPCC=$dep_cc
6000 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6001 DEPAS=$as
6002 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6003 YASM=$yasmexe
6004 DEPYASM=$yasmexe
6005 AR=$ar
6006 ARFLAGS=$arflags
6007 AR_O=$ar_o
6008 RANLIB=$ranlib
6009 STRIP=$strip
6010 CP=cp -p
6011 LN_S=$ln_s
6012 CPPFLAGS=$CPPFLAGS
6013 CFLAGS=$CFLAGS
6014 CXXFLAGS=$CXXFLAGS
6015 ASFLAGS=$ASFLAGS
6016 AS_C=$AS_C
6017 AS_O=$AS_O
6018 CC_C=$CC_C
6019 CC_E=$CC_E
6020 CC_O=$CC_O
6021 CXX_C=$CXX_C
6022 CXX_O=$CXX_O
6023 LD_O=$LD_O
6024 LD_LIB=$LD_LIB
6025 LD_PATH=$LD_PATH
6026 DLLTOOL=$dlltool
6027 WINDRES=$windres
6028 DEPWINDRES=$dep_cc
6029 DOXYGEN=$doxygen
6030 LDFLAGS=$LDFLAGS
6031 LDEXEFLAGS=$LDEXEFLAGS
6032 LDLIBFLAGS=$LDLIBFLAGS
6033 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6034 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6035 YASMFLAGS=$YASMFLAGS
6036 BUILDSUF=$build_suffix
6037 PROGSSUF=$progs_suffix
6038 FULLNAME=$FULLNAME
6039 LIBPREF=$LIBPREF
6040 LIBSUF=$LIBSUF
6041 LIBNAME=$LIBNAME
6042 SLIBPREF=$SLIBPREF
6043 SLIBSUF=$SLIBSUF
6044 EXESUF=$EXESUF
6045 EXTRA_VERSION=$extra_version
6046 CCDEP=$CCDEP
6047 CXXDEP=$CXXDEP
6048 CCDEP_FLAGS=$CCDEP_FLAGS
6049 ASDEP=$ASDEP
6050 ASDEP_FLAGS=$ASDEP_FLAGS
6051 CC_DEPFLAGS=$CC_DEPFLAGS
6052 AS_DEPFLAGS=$AS_DEPFLAGS
6053 HOSTCC=$host_cc
6054 HOSTLD=$host_ld
6055 HOSTCFLAGS=$host_cflags
6056 HOSTCPPFLAGS=$host_cppflags
6057 HOSTEXESUF=$HOSTEXESUF
6058 HOSTLDFLAGS=$host_ldflags
6059 HOSTLIBS=$host_libs
6060 DEPHOSTCC=$host_cc
6061 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6062 HOSTCCDEP=$HOSTCCDEP
6063 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6064 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6065 HOSTCC_C=$HOSTCC_C
6066 HOSTCC_O=$HOSTCC_O
6067 HOSTLD_O=$HOSTLD_O
6068 TARGET_EXEC=$target_exec $target_exec_args
6069 TARGET_PATH=$target_path
6070 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6071 CFLAGS-ffplay=$sdl_cflags
6072 ZLIB=$($ldflags_filter -lz)
6073 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6074 EXTRALIBS=$extralibs
6075 COMPAT_OBJS=$compat_objs
6076 EXEOBJS=$exeobjs
6077 INSTALL=$install
6078 LIBTARGET=${LIBTARGET}
6079 SLIBNAME=${SLIBNAME}
6080 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6081 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6082 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6083 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6084 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6085 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6086 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6087 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6088 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6089 NOREDZONE_FLAGS=$noredzone_flags
6090 EOF
6091
6092 get_version(){
6093     lcname=lib${1}
6094     name=$(toupper $lcname)
6095     file=$source_path/$lcname/version.h
6096     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6097     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6098     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6099     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6100     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6101     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6102 }
6103
6104 map 'get_version $v' $LIBRARY_LIST
6105
6106 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6107
6108 print_program_libs(){
6109     eval "program_libs=\$${1}_libs"
6110     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6111 }
6112
6113 map 'print_program_libs $v' $PROGRAM_LIST
6114
6115 cat > $TMPH <<EOF
6116 /* Automatically generated by configure - do not modify! */
6117 #ifndef FFMPEG_CONFIG_H
6118 #define FFMPEG_CONFIG_H
6119 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6120 #define FFMPEG_LICENSE "$(c_escape $license)"
6121 #define CONFIG_THIS_YEAR 2015
6122 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6123 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6124 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6125 #define av_restrict $_restrict
6126 #define EXTERN_PREFIX "${extern_prefix}"
6127 #define EXTERN_ASM ${extern_prefix}
6128 #define BUILDSUF "$build_suffix"
6129 #define SLIBSUF "$SLIBSUF"
6130 #define HAVE_MMX2 HAVE_MMXEXT
6131 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6132 EOF
6133
6134 test -n "$assert_level" &&
6135     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6136
6137 test -n "$malloc_prefix" &&
6138     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6139
6140 if enabled yasm; then
6141     append config_files $TMPASM
6142     printf '' >$TMPASM
6143 fi
6144
6145 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6146
6147
6148 mkdir -p doc
6149 mkdir -p tests
6150 mkdir -p tests/api
6151 echo "@c auto-generated by configure" > doc/config.texi
6152
6153 print_config ARCH_   "$config_files" $ARCH_LIST
6154 print_config HAVE_   "$config_files" $HAVE_LIST
6155 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6156                                      $CONFIG_EXTRA      \
6157                                      $ALL_COMPONENTS    \
6158
6159 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6160 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6161
6162 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6163 cp_if_changed $TMPH config.h
6164 touch .config
6165
6166 enabled yasm && cp_if_changed $TMPASM config.asm
6167
6168 cat > $TMPH <<EOF
6169 /* Generated by ffconf */
6170 #ifndef AVUTIL_AVCONFIG_H
6171 #define AVUTIL_AVCONFIG_H
6172 EOF
6173
6174 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6175
6176 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6177
6178 cp_if_changed $TMPH libavutil/avconfig.h
6179
6180 if test -n "$WARNINGS"; then
6181     printf "\n$WARNINGS"
6182     enabled fatal_warnings && exit 1
6183 fi
6184
6185 # build pkg-config files
6186
6187 lib_version(){
6188     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6189 }
6190
6191 pkgconfig_generate(){
6192     name=$1
6193     shortname=${name#lib}${build_suffix}
6194     comment=$2
6195     version=$3
6196     libs=$4
6197     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6198     requires=${requires%, }
6199     enabled ${name#lib} || return 0
6200     mkdir -p $name
6201     cat <<EOF > $name/$name${build_suffix}.pc
6202 prefix=$prefix
6203 exec_prefix=\${prefix}
6204 libdir=$libdir
6205 includedir=$incdir
6206
6207 Name: $name
6208 Description: $comment
6209 Version: $version
6210 Requires: $(enabled shared || echo $requires)
6211 Requires.private: $(enabled shared && echo $requires)
6212 Conflicts:
6213 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6214 Libs.private: $(enabled shared && echo $libs)
6215 Cflags: -I\${includedir}
6216 EOF
6217
6218 mkdir -p doc/examples/pc-uninstalled
6219 includedir=${source_path}
6220 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6221     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6222 prefix=
6223 exec_prefix=
6224 libdir=\${pcfiledir}/../../../$name
6225 includedir=${includedir}
6226
6227 Name: $name
6228 Description: $comment
6229 Version: $version
6230 Requires: $requires
6231 Conflicts:
6232 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6233 Cflags: -I\${includedir}
6234 EOF
6235 }
6236
6237 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6238 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6239 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6240 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6241 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6242 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6243 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6244 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6245 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"