src/third_party/ffmpeg/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 [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92                            use rpath when linking programs [USE WITH CARE]
  93
  94 Licensing options:
  95   --enable-gpl             allow use of GPL code, the resulting libs
  96                            and binaries will be under GPL [no]
  97   --enable-version3        upgrade (L)GPL to version 3 [no]
  98   --enable-nonfree         allow use of nonfree code, the resulting libs
  99                            and binaries will be unredistributable [no]
 100
 101 Configuration options:
 102   --disable-static         do not build static libraries [no]
 103   --enable-shared          build shared libraries [no]
 104   --enable-small           optimize for size instead of speed
 105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 106   --enable-gray            enable full grayscale support (slower color)
 107   --disable-swscale-alpha  disable alpha channel support in swscale
 108   --disable-all            disable building components, libraries and programs
 109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 110   --enable-raise-major     increase major version numbers in sonames [no]
 111
 112 Program options:
 113   --disable-programs       do not build command line programs
 114   --disable-ffmpeg         disable ffmpeg build
 115   --disable-ffplay         disable ffplay build
 116   --disable-ffprobe        disable ffprobe build
 117   --disable-ffserver       disable ffserver build
 118
 119 Documentation options:
 120   --disable-doc            do not build documentation
 121   --disable-htmlpages      do not build HTML documentation pages
 122   --disable-manpages       do not build man documentation pages
 123   --disable-podpages       do not build POD documentation pages
 124   --disable-txtpages       do not build text documentation pages
 125
 126 Component options:
 127   --disable-avdevice       disable libavdevice build
 128   --disable-avcodec        disable libavcodec build
 129   --disable-avformat       disable libavformat build
 130   --disable-avutil         disable libavutil build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [auto]
 137   --disable-w32threads     disable Win32 threads [auto]
 138   --disable-os2threads     disable OS/2 threads [auto]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-dxva2          disable DXVA2 code [autodetect]
 153   --disable-vaapi          disable VAAPI code [autodetect]
 154   --disable-vda            disable VDA code [autodetect]
 155   --disable-vdpau          disable VDPAU code [autodetect]
 156
 157 Individual component options:
 158   --disable-everything     disable all components listed below
 159   --disable-encoder=NAME   disable encoder NAME
 160   --enable-encoder=NAME    enable encoder NAME
 161   --disable-encoders       disable all encoders
 162   --disable-decoder=NAME   disable decoder NAME
 163   --enable-decoder=NAME    enable decoder NAME
 164   --disable-decoders       disable all decoders
 165   --disable-hwaccel=NAME   disable hwaccel NAME
 166   --enable-hwaccel=NAME    enable hwaccel NAME
 167   --disable-hwaccels       disable all hwaccels
 168   --disable-muxer=NAME     disable muxer NAME
 169   --enable-muxer=NAME      enable muxer NAME
 170   --disable-muxers         disable all muxers
 171   --disable-demuxer=NAME   disable demuxer NAME
 172   --enable-demuxer=NAME    enable demuxer NAME
 173   --disable-demuxers       disable all demuxers
 174   --enable-parser=NAME     enable parser NAME
 175   --disable-parser=NAME    disable parser NAME
 176   --disable-parsers        disable all parsers
 177   --enable-bsf=NAME        enable bitstream filter NAME
 178   --disable-bsf=NAME       disable bitstream filter NAME
 179   --disable-bsfs           disable all bitstream filters
 180   --enable-protocol=NAME   enable protocol NAME
 181   --disable-protocol=NAME  disable protocol NAME
 182   --disable-protocols      disable all protocols
 183   --enable-indev=NAME      enable input device NAME
 184   --disable-indev=NAME     disable input device NAME
 185   --disable-indevs         disable input devices
 186   --enable-outdev=NAME     enable output device NAME
 187   --disable-outdev=NAME    disable output device NAME
 188   --disable-outdevs        disable output devices
 189   --disable-devices        disable all devices
 190   --enable-filter=NAME     enable filter NAME
 191   --disable-filter=NAME    disable filter NAME
 192   --disable-filters        disable all filters
 193
 194 External library support:
 195   --enable-avisynth        enable reading of AviSynth script files [no]
 196   --disable-bzlib          disable bzlib [autodetect]
 197   --enable-fontconfig      enable fontconfig
 198   --enable-frei0r          enable frei0r video filtering
 199   --enable-gnutls          enable gnutls [no]
 200   --disable-iconv          disable iconv [autodetect]
 201   --enable-ladspa          enable LADSPA audio filtering
 202   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 203   --enable-libass          enable libass subtitles rendering [no]
 204   --enable-libbluray       enable BluRay reading using libbluray [no]
 205   --enable-libbs2b         enable bs2b DSP library [no]
 206   --enable-libcaca         enable textual display using libcaca
 207   --enable-libcelt         enable CELT decoding via libcelt [no]
 208   --enable-libcdio         enable audio CD grabbing with libcdio
 209   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 210                            and libraw1394 [no]
 211   --enable-libfaac         enable AAC encoding via libfaac [no]
 212   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 213   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 214   --enable-libfreetype     enable libfreetype [no]
 215   --enable-libfribidi      enable libfribidi [no]
 216   --enable-libgme          enable Game Music Emu via libgme [no]
 217   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 218   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 219   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 220   --enable-libmodplug      enable ModPlug via libmodplug [no]
 221   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 222   --enable-libnut          enable NUT (de)muxing via libnut,
 223                            native (de)muxer exists [no]
 224   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 225   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 226   --enable-libopencv       enable video filtering via libopencv [no]
 227   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 228   --enable-libopus         enable Opus de/encoding via libopus [no]
 229   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 230   --enable-libquvi         enable quvi input via libquvi [no]
 231   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 232   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 233   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 234   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 235   --enable-libsoxr         enable Include libsoxr resampling [no]
 236   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 237   --enable-libssh          enable SFTP protocol via libssh [no]
 238   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 239   --enable-libtheora       enable Theora encoding via libtheora [no]
 240   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 241   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 242   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 243   --enable-libvidstab      enable video stabilization using vid.stab [no]
 244   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 245   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 246   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 247                            native implementation exists [no]
 248   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 249   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 250   --enable-libwebp         enable WebP encoding via libwebp [no]
 251   --enable-libx264         enable H.264 encoding via x264 [no]
 252   --enable-libx265         enable HEVC encoding via x265 [no]
 253   --enable-libxavs         enable AVS encoding via xavs [no]
 254   --enable-libxvid         enable Xvid encoding via xvidcore,
 255                            native MPEG-4/Xvid encoder exists [no]
 256   --enable-libzmq          enable message passing via libzmq [no]
 257   --enable-libzvbi         enable teletext support via libzvbi [no]
 258   --disable-lzma           disable lzma [autodetect]
 259   --enable-decklink        enable Blackmagick DeckLink output [no]
 260   --enable-openal          enable OpenAL 1.1 capture support [no]
 261   --enable-opencl          enable OpenCL code
 262   --enable-opengl          enable OpenGL rendering [no]
 263   --enable-openssl         enable openssl [no]
 264   --enable-x11grab         enable X11 grabbing [no]
 265   --disable-xlib           disable xlib [autodetect]
 266   --disable-zlib           disable zlib [autodetect]
 267
 268 Toolchain options:
 269   --arch=ARCH              select architecture [$arch]
 270   --cpu=CPU                select the minimum required CPU (affects
 271                            instruction selection, may crash on older CPUs)
 272   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 273   --progs-suffix=SUFFIX    program name suffix []
 274   --enable-cross-compile   assume a cross-compiler is used
 275   --sysroot=PATH           root of cross-build tree
 276   --sysinclude=PATH        location of cross-build system headers
 277   --target-os=OS           compiler targets OS [$target_os]
 278   --target-exec=CMD        command to run executables on target
 279   --target-path=DIR        path to view of build directory on target
 280   --target-samples=DIR     path to samples directory on target
 281   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 282   --toolchain=NAME         set tool defaults according to NAME
 283   --nm=NM                  use nm tool NM [$nm_default]
 284   --ar=AR                  use archive tool AR [$ar_default]
 285   --as=AS                  use assembler AS [$as_default]
 286   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 287   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 288   --cc=CC                  use C compiler CC [$cc_default]
 289   --cxx=CXX                use C compiler CXX [$cxx_default]
 290   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 291   --ld=LD                  use linker LD [$ld_default]
 292   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 293   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 294   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 295   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 296   --host-cc=HOSTCC         use host C compiler HOSTCC
 297   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 298   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 299   --host-ld=HOSTLD         use host linker HOSTLD
 300   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 301   --host-libs=HLIBS        use libs HLIBS when linking for host
 302   --host-os=OS             compiler host OS [$target_os]
 303   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 304   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 305   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 306   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 307   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 308   --extra-version=STRING   version string suffix []
 309   --optflags=OPTFLAGS      override optimization-related compiler flags
 310   --build-suffix=SUFFIX    library name suffix []
 311   --enable-pic             build position-independent code
 312   --enable-thumb           compile for Thumb instruction set
 313   --enable-lto             use link-time optimization
 314
 315 Advanced options (experts only):
 316   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 317   --disable-symver         disable symbol versioning
 318   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 319   --disable-safe-bitstream-reader
 320                            disable buffer boundary checking in bitreaders
 321                            (faster, but may crash)
 322   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 323   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 324
 325 Optimization options (experts only):
 326   --disable-asm            disable all assembly optimizations
 327   --disable-altivec        disable AltiVec optimizations
 328   --disable-amd3dnow       disable 3DNow! optimizations
 329   --disable-amd3dnowext    disable 3DNow! extended optimizations
 330   --disable-mmx            disable MMX optimizations
 331   --disable-mmxext         disable MMXEXT optimizations
 332   --disable-sse            disable SSE optimizations
 333   --disable-sse2           disable SSE2 optimizations
 334   --disable-sse3           disable SSE3 optimizations
 335   --disable-ssse3          disable SSSE3 optimizations
 336   --disable-sse4           disable SSE4 optimizations
 337   --disable-sse42          disable SSE4.2 optimizations
 338   --disable-avx            disable AVX optimizations
 339   --disable-xop            disable XOP optimizations
 340   --disable-fma3           disable FMA3 optimizations
 341   --disable-fma4           disable FMA4 optimizations
 342   --disable-avx2           disable AVX2 optimizations
 343   --disable-armv5te        disable armv5te optimizations
 344   --disable-armv6          disable armv6 optimizations
 345   --disable-armv6t2        disable armv6t2 optimizations
 346   --disable-vfp            disable VFP optimizations
 347   --disable-neon           disable NEON optimizations
 348   --disable-inline-asm     disable use of inline assembly
 349   --disable-yasm           disable use of nasm/yasm assembly
 350   --disable-mips32r2       disable MIPS32R2 optimizations
 351   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 352   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 353   --disable-mipsfpu        disable floating point MIPS optimizations
 354   --disable-fast-unaligned consider unaligned accesses slow
 355
 356 Developer options (useful when working on FFmpeg itself):
 357   --disable-debug          disable debugging symbols
 358   --enable-debug=LEVEL     set the debug level [$debuglevel]
 359   --disable-optimizations  disable compiler optimizations
 360   --enable-extra-warnings  enable more compiler warnings
 361   --disable-stripping      disable stripping of executables and shared libraries
 362   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 363                            2 causes a slowdown at runtime.
 364   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 365   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 366                            leaks and errors, using the specified valgrind binary.
 367                            Cannot be combined with --target-exec
 368   --enable-ftrapv          Trap arithmetic overflows
 369   --samples=PATH           location of test samples for FATE, if not set use
 370                            \$FATE_SAMPLES at make invocation time.
 371   --enable-neon-clobber-test check NEON registers for clobbering (should be
 372                            used only for debugging purposes)
 373   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 374                            should be used only for debugging purposes)
 375   --enable-random          randomly enable/disable components
 376   --disable-random
 377   --enable-random=LIST     randomly enable/disable specific components or
 378   --disable-random=LIST    component groups. LIST is a comma-separated list
 379                            of NAME[:PROB] entries where NAME is a component
 380                            (group) and PROB the probability associated with
 381                            NAME (default 0.5).
 382   --random-seed=VALUE      seed value for --enable/disable-random
 383
 384 NOTE: Object files are built at the place where configure is launched.
 385 EOF
 386   exit 0
 387 }
 388
 389 quotes='""'
 390
 391 log(){
 392     echo "$@" >> $logfile
 393 }
 394
 395 log_file(){
 396     log BEGIN $1
 397     pr -n -t $1 >> $logfile
 398     log END $1
 399 }
 400
 401 echolog(){
 402     log "$@"
 403     echo "$@"
 404 }
 405
 406 warn(){
 407     log "WARNING: $*"
 408     WARNINGS="${WARNINGS}WARNING: $*\n"
 409 }
 410
 411 die(){
 412     echolog "$@"
 413     cat <<EOF
 414
 415 If you think configure made a mistake, make sure you are using the latest
 416 version from Git.  If the latest version fails, report the problem to the
 417 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 418 EOF
 419     if disabled logging; then
 420         cat <<EOF
 421 Rerun configure with logging enabled (do not use --disable-logging), and
 422 include the log this produces with your report.
 423 EOF
 424     else
 425         cat <<EOF
 426 Include the log file "$logfile" produced by configure as this will help
 427 solve the problem.
 428 EOF
 429     fi
 430     exit 1
 431 }
 432
 433 # Avoid locale weirdness, besides we really just want to translate ASCII.
 434 toupper(){
 435     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 436 }
 437
 438 tolower(){
 439     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 440 }
 441
 442 c_escape(){
 443     echo "$*" | sed 's/["\\]/\\\0/g'
 444 }
 445
 446 sh_quote(){
 447     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 448     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 449     echo "$v"
 450 }
 451
 452 cleanws(){
 453     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 454 }
 455
 456 filter(){
 457     pat=$1
 458     shift
 459     for v; do
 460         eval "case $v in $pat) echo $v ;; esac"
 461     done
 462 }
 463
 464 filter_out(){
 465     pat=$1
 466     shift
 467     for v; do
 468         eval "case $v in $pat) ;; *) echo $v ;; esac"
 469     done
 470 }
 471
 472 map(){
 473     m=$1
 474     shift
 475     for v; do eval $m; done
 476 }
 477
 478 add_suffix(){
 479     suffix=$1
 480     shift
 481     for v; do echo ${v}${suffix}; done
 482 }
 483
 484 set_all(){
 485     value=$1
 486     shift
 487     for var in $*; do
 488         eval $var=$value
 489     done
 490 }
 491
 492 set_weak(){
 493     value=$1
 494     shift
 495     for var; do
 496         eval : \${$var:=$value}
 497     done
 498 }
 499
 500 sanitize_var_name(){
 501     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 502 }
 503
 504 set_safe(){
 505     var=$1
 506     shift
 507     eval $(sanitize_var_name "$var")='$*'
 508 }
 509
 510 get_safe(){
 511     eval echo \$$(sanitize_var_name "$1")
 512 }
 513
 514 pushvar(){
 515     for pvar in $*; do
 516         eval level=\${${pvar}_level:=0}
 517         eval ${pvar}_${level}="\$$pvar"
 518         eval ${pvar}_level=$(($level+1))
 519     done
 520 }
 521
 522 popvar(){
 523     for pvar in $*; do
 524         eval level=\${${pvar}_level:-0}
 525         test $level = 0 && continue
 526         eval level=$(($level-1))
 527         eval $pvar="\${${pvar}_${level}}"
 528         eval ${pvar}_level=$level
 529         eval unset ${pvar}_${level}
 530     done
 531 }
 532
 533 enable(){
 534     set_all yes $*
 535 }
 536
 537 disable(){
 538     set_all no $*
 539 }
 540
 541 enable_weak(){
 542     set_weak yes $*
 543 }
 544
 545 disable_weak(){
 546     set_weak no $*
 547 }
 548
 549 enable_safe(){
 550     for var; do
 551         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 552     done
 553 }
 554
 555 disable_safe(){
 556     for var; do
 557         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 558     done
 559 }
 560
 561 do_enable_deep(){
 562     for var; do
 563         enabled $var && continue
 564         eval sel="\$${var}_select"
 565         eval sgs="\$${var}_suggest"
 566         pushvar var sgs
 567         enable_deep $sel
 568         popvar sgs
 569         enable_deep_weak $sgs
 570         popvar var
 571     done
 572 }
 573
 574 enable_deep(){
 575     do_enable_deep $*
 576     enable $*
 577 }
 578
 579 enable_deep_weak(){
 580     for var; do
 581         disabled $var && continue
 582         pushvar var
 583         do_enable_deep $var
 584         popvar var
 585         enable_weak $var
 586     done
 587 }
 588
 589 enabled(){
 590     test "${1#!}" = "$1" && op== || op=!=
 591     eval test "x\$${1#!}" $op "xyes"
 592 }
 593
 594 disabled(){
 595     test "${1#!}" = "$1" && op== || op=!=
 596     eval test "x\$${1#!}" $op "xno"
 597 }
 598
 599 enabled_all(){
 600     for opt; do
 601         enabled $opt || return 1
 602     done
 603 }
 604
 605 disabled_all(){
 606     for opt; do
 607         disabled $opt || return 1
 608     done
 609 }
 610
 611 enabled_any(){
 612     for opt; do
 613         enabled $opt && return 0
 614     done
 615 }
 616
 617 disabled_any(){
 618     for opt; do
 619         disabled $opt && return 0
 620     done
 621     return 1
 622 }
 623
 624 set_default(){
 625     for opt; do
 626         eval : \${$opt:=\$${opt}_default}
 627     done
 628 }
 629
 630 is_in(){
 631     value=$1
 632     shift
 633     for var in $*; do
 634         [ $var = $value ] && return 0
 635     done
 636     return 1
 637 }
 638
 639 do_check_deps(){
 640     for cfg; do
 641         cfg="${cfg#!}"
 642         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 643         disabled ${cfg}_checking && continue
 644         enable ${cfg}_checking
 645         append allopts $cfg
 646
 647         eval dep_all="\$${cfg}_deps"
 648         eval dep_any="\$${cfg}_deps_any"
 649         eval dep_sel="\$${cfg}_select"
 650         eval dep_sgs="\$${cfg}_suggest"
 651         eval dep_ifa="\$${cfg}_if"
 652         eval dep_ifn="\$${cfg}_if_any"
 653
 654         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 655         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 656         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 657
 658         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 659         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 660         enabled_all  $dep_all || disable $cfg
 661         enabled_any  $dep_any || disable $cfg
 662         disabled_any $dep_sel && disable $cfg
 663
 664         if enabled $cfg; then
 665             enable_deep $dep_sel
 666             enable_deep_weak $dep_sgs
 667         fi
 668
 669         disable ${cfg}_checking
 670     done
 671 }
 672
 673 check_deps(){
 674     unset allopts
 675
 676     do_check_deps "$@"
 677
 678     for cfg in $allopts; do
 679         enabled $cfg || continue
 680         eval dep_extralibs="\$${cfg}_extralibs"
 681         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 682     done
 683 }
 684
 685 print_config(){
 686     pfx=$1
 687     files=$2
 688     shift 2
 689     map 'eval echo "$v \${$v:-no}"' "$@" |
 690     awk "BEGIN { split(\"$files\", files) }
 691         {
 692             c = \"$pfx\" toupper(\$1);
 693             v = \$2;
 694             sub(/yes/, 1, v);
 695             sub(/no/,  0, v);
 696             for (f in files) {
 697                 file = files[f];
 698                 if (file ~ /\\.h\$/) {
 699                     printf(\"#define %s %d\\n\", c, v) >>file;
 700                 } else if (file ~ /\\.asm\$/) {
 701                     printf(\"%%define %s %d\\n\", c, v) >>file;
 702                 } else if (file ~ /\\.mak\$/) {
 703                     n = -v ? \"\" : \"!\";
 704                     printf(\"%s%s=yes\\n\", n, c) >>file;
 705                 } else if (file ~ /\\.texi\$/) {
 706                     pre = -v ? \"\" : \"@c \";
 707                     yesno = \$2;
 708                     c2 = tolower(c);
 709                     gsub(/_/, \"-\", c2);
 710                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 711                 }
 712             }
 713         }"
 714 }
 715
 716 print_enabled(){
 717     suf=$1
 718     shift
 719     for v; do
 720         enabled $v && printf "%s\n" ${v%$suf};
 721     done
 722 }
 723
 724 append(){
 725     var=$1
 726     shift
 727     eval "$var=\"\$$var $*\""
 728 }
 729
 730 prepend(){
 731     var=$1
 732     shift
 733     eval "$var=\"$* \$$var\""
 734 }
 735
 736 unique(){
 737     var=$1
 738     uniq_list=""
 739     for tok in $(eval echo \$$var); do
 740         uniq_list="$(filter_out $tok $uniq_list) $tok"
 741     done
 742     eval "$var=\"${uniq_list}\""
 743 }
 744
 745 add_cppflags(){
 746     append CPPFLAGS "$@"
 747 }
 748
 749 add_cflags(){
 750     append CFLAGS $($cflags_filter "$@")
 751 }
 752
 753 add_cxxflags(){
 754     append CXXFLAGS $($cflags_filter "$@")
 755 }
 756
 757 add_asflags(){
 758     append ASFLAGS $($asflags_filter "$@")
 759 }
 760
 761 add_ldflags(){
 762     append LDFLAGS $($ldflags_filter "$@")
 763 }
 764
 765 add_ldexeflags(){
 766     append LDEXEFLAGS $($ldflags_filter "$@")
 767 }
 768
 769 add_stripflags(){
 770     append ASMSTRIPFLAGS "$@"
 771 }
 772
 773 add_extralibs(){
 774     prepend extralibs $($ldflags_filter "$@")
 775 }
 776
 777 add_host_cppflags(){
 778     append host_cppflags "$@"
 779 }
 780
 781 add_host_cflags(){
 782     append host_cflags $($host_cflags_filter "$@")
 783 }
 784
 785 add_host_ldflags(){
 786     append host_ldflags $($host_ldflags_filter "$@")
 787 }
 788
 789 add_compat(){
 790     append compat_objs $1
 791     shift
 792     map 'add_cppflags -D$v' "$@"
 793 }
 794
 795 check_cmd(){
 796     log "$@"
 797     "$@" >> $logfile 2>&1
 798 }
 799
 800 check_stat(){
 801     log check_stat "$@"
 802     stat "$1" >> $logfile 2>&1
 803 }
 804
 805 cc_o(){
 806     eval printf '%s\\n' $CC_O
 807 }
 808
 809 cc_e(){
 810     eval printf '%s\\n' $CC_E
 811 }
 812
 813 check_cc(){
 814     log check_cc "$@"
 815     cat > $TMPC
 816     log_file $TMPC
 817     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 818 }
 819
 820 check_cxx(){
 821     log check_cxx "$@"
 822     cat > $TMPCPP
 823     log_file $TMPCPP
 824     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 825 }
 826
 827 check_oc(){
 828     log check_oc "$@"
 829     cat > $TMPM
 830     log_file $TMPM
 831     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 832 }
 833
 834 check_cpp(){
 835     log check_cpp "$@"
 836     cat > $TMPC
 837     log_file $TMPC
 838     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 839 }
 840
 841 as_o(){
 842     eval printf '%s\\n' $AS_O
 843 }
 844
 845 check_as(){
 846     log check_as "$@"
 847     cat > $TMPS
 848     log_file $TMPS
 849     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 850 }
 851
 852 check_inline_asm(){
 853     log check_inline_asm "$@"
 854     name="$1"
 855     code="$2"
 856     shift 2
 857     disable $name
 858     check_cc "$@" <<EOF && enable $name
 859 void foo(void){ __asm__ volatile($code); }
 860 EOF
 861 }
 862
 863 check_insn(){
 864     log check_insn "$@"
 865     check_inline_asm ${1}_inline "\"$2\""
 866     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 867 }
 868
 869 check_yasm(){
 870     log check_yasm "$@"
 871     echo "$1" > $TMPS
 872     log_file $TMPS
 873     shift 1
 874     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 875 }
 876
 877 ld_o(){
 878     eval printf '%s\\n' $LD_O
 879 }
 880
 881 check_ld(){
 882     log check_ld "$@"
 883     type=$1
 884     shift 1
 885     flags=$(filter_out '-l*|*.so' $@)
 886     libs=$(filter '-l*|*.so' $@)
 887     check_$type $($cflags_filter $flags) || return
 888     flags=$($ldflags_filter $flags)
 889     libs=$($ldflags_filter $libs)
 890     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 891 }
 892
 893 print_include(){
 894     hdr=$1
 895     test "${hdr%.h}" = "${hdr}" &&
 896         echo "#include $hdr"    ||
 897         echo "#include <$hdr>"
 898 }
 899
 900 check_code(){
 901     log check_code "$@"
 902     check=$1
 903     headers=$2
 904     code=$3
 905     shift 3
 906     {
 907         for hdr in $headers; do
 908             print_include $hdr
 909         done
 910         echo "int main(void) { $code; return 0; }"
 911     } | check_$check "$@"
 912 }
 913
 914 check_cppflags(){
 915     log check_cppflags "$@"
 916     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 917 int x;
 918 EOF
 919 }
 920
 921 test_cflags(){
 922     log test_cflags "$@"
 923     set -- $($cflags_filter "$@")
 924     check_cc "$@" <<EOF
 925 int x;
 926 EOF
 927 }
 928
 929 check_cflags(){
 930     log check_cflags "$@"
 931     test_cflags "$@" && add_cflags "$@"
 932 }
 933
 934 check_cxxflags(){
 935     log check_cxxflags "$@"
 936     set -- $($cflags_filter "$@")
 937     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 938 int x;
 939 EOF
 940 }
 941
 942 test_ldflags(){
 943     log test_ldflags "$@"
 944     check_ld "cc" "$@" <<EOF
 945 int main(void){ return 0; }
 946 EOF
 947 }
 948
 949 check_ldflags(){
 950     log check_ldflags "$@"
 951     test_ldflags "$@" && add_ldflags "$@"
 952 }
 953
 954 test_stripflags(){
 955     log test_stripflags "$@"
 956     # call check_cc to get a fresh TMPO
 957     check_cc <<EOF
 958 int main(void) { return 0; }
 959 EOF
 960     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 961 }
 962
 963 check_stripflags(){
 964     log check_stripflags "$@"
 965     test_stripflags "$@" && add_stripflags "$@"
 966 }
 967
 968 check_header(){
 969     log check_header "$@"
 970     header=$1
 971     shift
 972     disable_safe $header
 973     check_cpp "$@" <<EOF && enable_safe $header
 974 #include <$header>
 975 int x;
 976 EOF
 977 }
 978
 979 check_header_oc(){
 980     log check_header_oc "$@"
 981     rm -f -- "$TMPO"
 982     header=$1
 983     shift
 984     disable_safe $header
 985     {
 986        echo "#include <$header>"
 987        echo "int main(void) { return 0; }"
 988     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 989 }
 990
 991 check_func(){
 992     log check_func "$@"
 993     func=$1
 994     shift
 995     disable $func
 996     check_ld "cc" "$@" <<EOF && enable $func
 997 extern int $func();
 998 int main(void){ $func(); }
 999 EOF
1000 }
1001
1002 check_mathfunc(){
1003     log check_mathfunc "$@"
1004     func=$1
1005     narg=$2
1006     shift 2
1007     test $narg = 2 && args="f, g" || args="f"
1008     disable $func
1009     check_ld "cc" "$@" <<EOF && enable $func
1010 #include <math.h>
1011 float foo(float f, float g) { return $func($args); }
1012 int main(void){ return (int) foo; }
1013 EOF
1014 }
1015
1016 check_func_headers(){
1017     log check_func_headers "$@"
1018     headers=$1
1019     funcs=$2
1020     shift 2
1021     {
1022         for hdr in $headers; do
1023             print_include $hdr
1024         done
1025         for func in $funcs; do
1026             echo "long check_$func(void) { return (long) $func; }"
1027         done
1028         echo "int main(void) { return 0; }"
1029     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1030 }
1031
1032 check_class_headers_cpp(){
1033     log check_class_headers_cpp "$@"
1034     headers=$1
1035     classes=$2
1036     shift 2
1037     {
1038         for hdr in $headers; do
1039             echo "#include <$hdr>"
1040         done
1041         echo "int main(void) { "
1042         i=1
1043         for class in $classes; do
1044             echo "$class obj$i;"
1045             i=$(expr $i + 1)
1046         done
1047         echo "return 0; }"
1048     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1049 }
1050
1051 check_cpp_condition(){
1052     log check_cpp_condition "$@"
1053     header=$1
1054     condition=$2
1055     shift 2
1056     check_cpp "$@" <<EOF
1057 #include <$header>
1058 #if !($condition)
1059 #error "unsatisfied condition: $condition"
1060 #endif
1061 EOF
1062 }
1063
1064 check_lib(){
1065     log check_lib "$@"
1066     header="$1"
1067     func="$2"
1068     shift 2
1069     check_header $header && check_func $func "$@" && add_extralibs "$@"
1070 }
1071
1072 check_lib2(){
1073     log check_lib2 "$@"
1074     headers="$1"
1075     funcs="$2"
1076     shift 2
1077     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1078 }
1079
1080 check_lib_cpp(){
1081     log check_lib_cpp "$@"
1082     headers="$1"
1083     classes="$2"
1084     shift 2
1085     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1086 }
1087
1088 check_pkg_config(){
1089     log check_pkg_config "$@"
1090     pkgandversion="$1"
1091     pkg="${1%% *}"
1092     headers="$2"
1093     funcs="$3"
1094     shift 3
1095     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1096     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1097     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1098     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1099         set_safe ${pkg}_cflags $pkg_cflags   &&
1100         set_safe ${pkg}_libs   $pkg_libs
1101 }
1102
1103 check_exec(){
1104     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1105 }
1106
1107 check_exec_crash(){
1108     code=$(cat)
1109
1110     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1111     # are safe but may not be available everywhere.  Thus we use
1112     # raise(SIGTERM) instead.  The check is run in a subshell so we
1113     # can redirect the "Terminated" message from the shell.  SIGBUS
1114     # is not defined by standard C so it is used conditionally.
1115
1116     (check_exec "$@") >> $logfile 2>&1 <<EOF
1117 #include <signal.h>
1118 static void sighandler(int sig){
1119     raise(SIGTERM);
1120 }
1121 int foo(void){
1122     $code
1123 }
1124 int (*func_ptr)(void) = foo;
1125 int main(void){
1126     signal(SIGILL, sighandler);
1127     signal(SIGFPE, sighandler);
1128     signal(SIGSEGV, sighandler);
1129 #ifdef SIGBUS
1130     signal(SIGBUS, sighandler);
1131 #endif
1132     return func_ptr();
1133 }
1134 EOF
1135 }
1136
1137 check_type(){
1138     log check_type "$@"
1139     headers=$1
1140     type=$2
1141     shift 2
1142     disable_safe "$type"
1143     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1144 }
1145
1146 check_struct(){
1147     log check_struct "$@"
1148     headers=$1
1149     struct=$2
1150     member=$3
1151     shift 3
1152     disable_safe "${struct}_${member}"
1153     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1154         enable_safe "${struct}_${member}"
1155 }
1156
1157 check_builtin(){
1158     log check_builtin "$@"
1159     name=$1
1160     headers=$2
1161     builtin=$3
1162     shift 3
1163     disable "$name"
1164     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1165 }
1166
1167 check_compile_assert(){
1168     log check_compile_assert "$@"
1169     name=$1
1170     headers=$2
1171     condition=$3
1172     shift 3
1173     disable "$name"
1174     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1175 }
1176
1177 require(){
1178     name="$1"
1179     header="$2"
1180     func="$3"
1181     shift 3
1182     check_lib $header $func "$@" || die "ERROR: $name not found"
1183 }
1184
1185 require2(){
1186     name="$1"
1187     headers="$2"
1188     func="$3"
1189     shift 3
1190     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1191 }
1192
1193 require_cpp(){
1194     name="$1"
1195     headers="$2"
1196     classes="$3"
1197     shift 3
1198     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1199 }
1200
1201 require_pkg_config(){
1202     pkg="$1"
1203     check_pkg_config "$@" || die "ERROR: $pkg not found"
1204     add_cflags    $(get_safe ${pkg}_cflags)
1205     add_extralibs $(get_safe ${pkg}_libs)
1206 }
1207
1208 require_libfreetype(){
1209     log require_libfreetype "$@"
1210     pkg="freetype2"
1211     check_cmd $pkg_config --exists --print-errors $pkg \
1212       || die "ERROR: $pkg not found"
1213     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1214     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1215     {
1216         echo "#include <ft2build.h>"
1217         echo "#include FT_FREETYPE_H"
1218         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1219         echo "int main(void) { return 0; }"
1220     } | check_ld "cc" $pkg_cflags $pkg_libs \
1221       && set_safe ${pkg}_cflags $pkg_cflags \
1222       && set_safe ${pkg}_libs   $pkg_libs \
1223       || die "ERROR: $pkg not found"
1224     add_cflags    $(get_safe ${pkg}_cflags)
1225     add_extralibs $(get_safe ${pkg}_libs)
1226 }
1227
1228 hostcc_e(){
1229     eval printf '%s\\n' $HOSTCC_E
1230 }
1231
1232 hostcc_o(){
1233     eval printf '%s\\n' $HOSTCC_O
1234 }
1235
1236 check_host_cc(){
1237     log check_host_cc "$@"
1238     cat > $TMPC
1239     log_file $TMPC
1240     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1241 }
1242
1243 check_host_cpp(){
1244     log check_host_cpp "$@"
1245     cat > $TMPC
1246     log_file $TMPC
1247     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1248 }
1249
1250 check_host_cppflags(){
1251     log check_host_cppflags "$@"
1252     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1253 int x;
1254 EOF
1255 }
1256
1257 check_host_cflags(){
1258     log check_host_cflags "$@"
1259     set -- $($host_cflags_filter "$@")
1260     check_host_cc "$@" <<EOF && append host_cflags "$@"
1261 int x;
1262 EOF
1263 }
1264
1265 check_host_cpp_condition(){
1266     log check_host_cpp_condition "$@"
1267     header=$1
1268     condition=$2
1269     shift 2
1270     check_host_cpp "$@" <<EOF
1271 #include <$header>
1272 #if !($condition)
1273 #error "unsatisfied condition: $condition"
1274 #endif
1275 EOF
1276 }
1277
1278 apply(){
1279     file=$1
1280     shift
1281     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1282 }
1283
1284 cp_if_changed(){
1285     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1286     mkdir -p "$(dirname $2)"
1287     $cp_f "$1" "$2"
1288 }
1289
1290 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1291 # system-dependent things.
1292
1293 COMPONENT_LIST="
1294     bsfs
1295     decoders
1296     demuxers
1297     encoders
1298     filters
1299     hwaccels
1300     indevs
1301     muxers
1302     outdevs
1303     parsers
1304     protocols
1305 "
1306
1307 EXAMPLE_LIST="
1308     avio_reading_example
1309     decoding_encoding_example
1310     demuxing_decoding_example
1311     extract_mvs_example
1312     filter_audio_example
1313     filtering_audio_example
1314     filtering_video_example
1315     metadata_example
1316     muxing_example
1317     remuxing_example
1318     resampling_audio_example
1319     scaling_video_example
1320     transcode_aac_example
1321     transcoding_example
1322 "
1323
1324 EXTERNAL_LIBRARY_LIST="
1325     avisynth
1326     bzlib
1327     crystalhd
1328     decklink
1329     frei0r
1330     gnutls
1331     iconv
1332     ladspa
1333     libaacplus
1334     libass
1335     libbluray
1336     libbs2b
1337     libcaca
1338     libcdio
1339     libcelt
1340     libdc1394
1341     libfaac
1342     libfdk_aac
1343     libflite
1344     libfontconfig
1345     libfreetype
1346     libfribidi
1347     libgme
1348     libgsm
1349     libiec61883
1350     libilbc
1351     libmodplug
1352     libmp3lame
1353     libnut
1354     libopencore_amrnb
1355     libopencore_amrwb
1356     libopencv
1357     libopenjpeg
1358     libopus
1359     libpulse
1360     libquvi
1361     librtmp
1362     libschroedinger
1363     libshine
1364     libsmbclient
1365     libsoxr
1366     libspeex
1367     libssh
1368     libstagefright_h264
1369     libtheora
1370     libtwolame
1371     libutvideo
1372     libv4l2
1373     libvidstab
1374     libvo_aacenc
1375     libvo_amrwbenc
1376     libvorbis
1377     libvpx
1378     libwavpack
1379     libwebp
1380     libx264
1381     libx265
1382     libxavs
1383     libxvid
1384     libzmq
1385     libzvbi
1386     lzma
1387     openal
1388     opencl
1389     opengl
1390     openssl
1391     x11grab
1392     xlib
1393     zlib
1394 "
1395
1396 DOCUMENT_LIST="
1397     doc
1398     htmlpages
1399     manpages
1400     podpages
1401     txtpages
1402 "
1403
1404 FEATURE_LIST="
1405     ftrapv
1406     gray
1407     hardcoded_tables
1408     runtime_cpudetect
1409     safe_bitstream_reader
1410     shared
1411     small
1412     static
1413     swscale_alpha
1414 "
1415
1416 HWACCEL_LIST="
1417     dxva2
1418     vaapi
1419     vda
1420     vdpau
1421     xvmc
1422 "
1423
1424 LIBRARY_LIST="
1425     avcodec
1426     avdevice
1427     avfilter
1428     avformat
1429     avresample
1430     avutil
1431     postproc
1432     swresample
1433     swscale
1434 "
1435
1436 LICENSE_LIST="
1437     gpl
1438     nonfree
1439     version3
1440 "
1441
1442 PROGRAM_LIST="
1443     ffplay
1444     ffprobe
1445     ffserver
1446     ffmpeg
1447 "
1448
1449 SUBSYSTEM_LIST="
1450     dct
1451     dwt
1452     error_resilience
1453     faan
1454     fast_unaligned
1455     fft
1456     lsp
1457     lzo
1458     mdct
1459     pixelutils
1460     network
1461     rdft
1462 "
1463
1464 CONFIG_LIST="
1465     $COMPONENT_LIST
1466     $DOCUMENT_LIST
1467     $EXAMPLE_LIST
1468     $EXTERNAL_LIBRARY_LIST
1469     $FEATURE_LIST
1470     $HWACCEL_LIST
1471     $LICENSE_LIST
1472     $LIBRARY_LIST
1473     $PROGRAM_LIST
1474     $SUBSYSTEM_LIST
1475     fontconfig
1476     incompatible_libav_abi
1477     memalign_hack
1478     memory_poisoning
1479     neon_clobber_test
1480     pic
1481     pod2man
1482     raise_major
1483     thumb
1484     xmm_clobber_test
1485 "
1486
1487 THREADS_LIST="
1488     pthreads
1489     os2threads
1490     w32threads
1491 "
1492
1493 ATOMICS_LIST="
1494     atomics_gcc
1495     atomics_suncc
1496     atomics_win32
1497 "
1498
1499 ARCH_LIST="
1500     aarch64
1501     alpha
1502     arm
1503     avr32
1504     avr32_ap
1505     avr32_uc
1506     bfin
1507     ia64
1508     m68k
1509     mips
1510     mips64
1511     parisc
1512     ppc
1513     ppc64
1514     s390
1515     sh4
1516     sparc
1517     sparc64
1518     tilegx
1519     tilepro
1520     tomi
1521     x86
1522     x86_32
1523     x86_64
1524 "
1525
1526 ARCH_EXT_LIST_ARM="
1527     armv5te
1528     armv6
1529     armv6t2
1530     armv8
1531     neon
1532     vfp
1533     vfpv3
1534     setend
1535 "
1536
1537 ARCH_EXT_LIST_MIPS="
1538     mipsfpu
1539     mips32r2
1540     mipsdspr1
1541     mipsdspr2
1542 "
1543
1544 ARCH_EXT_LIST_X86_SIMD="
1545     amd3dnow
1546     amd3dnowext
1547     avx
1548     avx2
1549     fma3
1550     fma4
1551     mmx
1552     mmxext
1553     sse
1554     sse2
1555     sse3
1556     sse4
1557     sse42
1558     ssse3
1559     xop
1560 "
1561
1562 ARCH_EXT_LIST_PPC="
1563     altivec
1564     dcbzl
1565     ldbrx
1566     ppc4xx
1567     vsx
1568 "
1569
1570 ARCH_EXT_LIST_X86="
1571     $ARCH_EXT_LIST_X86_SIMD
1572     cpunop
1573     i686
1574 "
1575
1576 ARCH_EXT_LIST="
1577     $ARCH_EXT_LIST_ARM
1578     $ARCH_EXT_LIST_PPC
1579     $ARCH_EXT_LIST_X86
1580     $ARCH_EXT_LIST_MIPS
1581     loongson
1582 "
1583
1584 ARCH_FEATURES="
1585     aligned_stack
1586     fast_64bit
1587     fast_clz
1588     fast_cmov
1589     local_aligned_8
1590     local_aligned_16
1591     local_aligned_32
1592     simd_align_16
1593 "
1594
1595 BUILTIN_LIST="
1596     atomic_cas_ptr
1597     machine_rw_barrier
1598     MemoryBarrier
1599     mm_empty
1600     rdtsc
1601     sarestart
1602     sync_val_compare_and_swap
1603 "
1604 HAVE_LIST_CMDLINE="
1605     inline_asm
1606     symver
1607     yasm
1608 "
1609
1610 HAVE_LIST_PUB="
1611     bigendian
1612     fast_unaligned
1613     incompatible_libav_abi
1614 "
1615
1616 HEADERS_LIST="
1617     alsa_asoundlib_h
1618     altivec_h
1619     arpa_inet_h
1620     asm_types_h
1621     cdio_paranoia_h
1622     cdio_paranoia_paranoia_h
1623     CL_cl_h
1624     dev_bktr_ioctl_bt848_h
1625     dev_bktr_ioctl_meteor_h
1626     dev_ic_bt8xx_h
1627     dev_video_bktr_ioctl_bt848_h
1628     dev_video_meteor_ioctl_meteor_h
1629     direct_h
1630     dlfcn_h
1631     dxva_h
1632     ES2_gl_h
1633     gsm_h
1634     io_h
1635     mach_mach_time_h
1636     machine_ioctl_bt848_h
1637     machine_ioctl_meteor_h
1638     malloc_h
1639     openjpeg_1_5_openjpeg_h
1640     OpenGL_gl3_h
1641     poll_h
1642     sndio_h
1643     soundcard_h
1644     sys_mman_h
1645     sys_param_h
1646     sys_resource_h
1647     sys_select_h
1648     sys_soundcard_h
1649     sys_time_h
1650     sys_un_h
1651     sys_videoio_h
1652     termios_h
1653     unistd_h
1654     windows_h
1655     winsock2_h
1656 "
1657
1658 INTRINSICS_LIST="
1659     intrinsics_neon
1660 "
1661
1662 MATH_FUNCS="
1663     atanf
1664     atan2f
1665     cbrt
1666     cbrtf
1667     cosf
1668     exp2
1669     exp2f
1670     expf
1671     fminf
1672     isinf
1673     isnan
1674     ldexpf
1675     llrint
1676     llrintf
1677     log2
1678     log2f
1679     log10f
1680     lrint
1681     lrintf
1682     powf
1683     rint
1684     round
1685     roundf
1686     sinf
1687     trunc
1688     truncf
1689 "
1690
1691 SYSTEM_FUNCS="
1692     access
1693     aligned_malloc
1694     clock_gettime
1695     closesocket
1696     CommandLineToArgvW
1697     CoTaskMemFree
1698     CryptGenRandom
1699     dlopen
1700     fcntl
1701     flt_lim
1702     fork
1703     getaddrinfo
1704     gethrtime
1705     getopt
1706     GetProcessAffinityMask
1707     GetProcessMemoryInfo
1708     GetProcessTimes
1709     getrusage
1710     getservbyport
1711     GetSystemTimeAsFileTime
1712     gettimeofday
1713     glob
1714     glXGetProcAddress
1715     inet_aton
1716     isatty
1717     jack_port_get_latency_range
1718     kbhit
1719     localtime_r
1720     lzo1x_999_compress
1721     mach_absolute_time
1722     MapViewOfFile
1723     memalign
1724     mkstemp
1725     mmap
1726     mprotect
1727     nanosleep
1728     PeekNamedPipe
1729     posix_memalign
1730     pthread_cancel
1731     sched_getaffinity
1732     SetConsoleTextAttribute
1733     setmode
1734     setrlimit
1735     Sleep
1736     strerror_r
1737     sysconf
1738     sysctl
1739     usleep
1740     VirtualAlloc
1741     wglGetProcAddress
1742 "
1743
1744 TOOLCHAIN_FEATURES="
1745     as_dn_directive
1746     as_func
1747     asm_mod_q
1748     attribute_may_alias
1749     attribute_packed
1750     ebp_available
1751     ebx_available
1752     gnu_as
1753     gnu_windres
1754     ibm_asm
1755     inline_asm_labels
1756     inline_asm_nonlocal_labels
1757     inline_asm_direct_symbol_refs
1758     pragma_deprecated
1759     rsync_contimeout
1760     symver_asm_label
1761     symver_gnu_asm
1762     vfp_args
1763     xform_asm
1764     xmm_clobbers
1765 "
1766
1767 TYPES_LIST="
1768     socklen_t
1769     struct_addrinfo
1770     struct_group_source_req
1771     struct_ip_mreq_source
1772     struct_ipv6_mreq
1773     struct_pollfd
1774     struct_rusage_ru_maxrss
1775     struct_sctp_event_subscribe
1776     struct_sockaddr_in6
1777     struct_sockaddr_sa_len
1778     struct_sockaddr_storage
1779     struct_stat_st_mtim_tv_nsec
1780     struct_v4l2_frmivalenum_discrete
1781 "
1782
1783 HAVE_LIST="
1784     $ARCH_EXT_LIST
1785     $(add_suffix _external $ARCH_EXT_LIST)
1786     $(add_suffix _inline   $ARCH_EXT_LIST)
1787     $ARCH_FEATURES
1788     $ATOMICS_LIST
1789     $BUILTIN_LIST
1790     $HAVE_LIST_CMDLINE
1791     $HAVE_LIST_PUB
1792     $HEADERS_LIST
1793     $INTRINSICS_LIST
1794     $MATH_FUNCS
1795     $SYSTEM_FUNCS
1796     $THREADS_LIST
1797     $TOOLCHAIN_FEATURES
1798     $TYPES_LIST
1799     atomics_native
1800     dos_paths
1801     dxva2api_cobj
1802     dxva2_lib
1803     libc_msvcrt
1804     libdc1394_1
1805     libdc1394_2
1806     makeinfo
1807     makeinfo_html
1808     perl
1809     pod2man
1810     sdl
1811     texi2html
1812     threads
1813     vdpau_x11
1814     xlib
1815 "
1816
1817 # options emitted with CONFIG_ prefix but not available on the command line
1818 CONFIG_EXTRA="
1819     aandcttables
1820     ac3dsp
1821     audio_frame_queue
1822     audiodsp
1823     blockdsp
1824     bswapdsp
1825     cabac
1826     dvprofile
1827     exif
1828     faandct
1829     faanidct
1830     fdctdsp
1831     frame_thread_encoder
1832     gcrypt
1833     golomb
1834     gplv3
1835     h263dsp
1836     h264chroma
1837     h264dsp
1838     h264pred
1839     h264qpel
1840     hpeldsp
1841     huffman
1842     huffyuvdsp
1843     huffyuvencdsp
1844     idctdsp
1845     iirfilter
1846     intrax8
1847     lgplv3
1848     llauddsp
1849     llviddsp
1850     lpc
1851     me_cmp
1852     mpeg_er
1853     mpegaudio
1854     mpegaudiodsp
1855     mpegvideo
1856     mpegvideoenc
1857     nettle
1858     pixblockdsp
1859     qpeldsp
1860     rangecoder
1861     riffdec
1862     riffenc
1863     rtpdec
1864     rtpenc_chain
1865     sinewin
1866     startcode
1867     tpeldsp
1868     videodsp
1869     vp3dsp
1870     wma_freqs
1871 "
1872
1873 CMDLINE_SELECT="
1874     $ARCH_EXT_LIST
1875     $CONFIG_LIST
1876     $HAVE_LIST_CMDLINE
1877     $THREADS_LIST
1878     asm
1879     cross_compile
1880     debug
1881     extra_warnings
1882     logging
1883     lto
1884     optimizations
1885     rpath
1886     stripping
1887 "
1888
1889 PATHS_LIST="
1890     bindir
1891     datadir
1892     docdir
1893     incdir
1894     libdir
1895     mandir
1896     prefix
1897     shlibdir
1898 "
1899
1900 CMDLINE_SET="
1901     $PATHS_LIST
1902     ar
1903     arch
1904     as
1905     assert_level
1906     build_suffix
1907     cc
1908     cpu
1909     cross_prefix
1910     cxx
1911     dep_cc
1912     doxygen
1913     extra_version
1914     gas
1915     host_cc
1916     host_cflags
1917     host_ld
1918     host_ldflags
1919     host_libs
1920     host_os
1921     install
1922     ld
1923     logfile
1924     malloc_prefix
1925     nm
1926     optflags
1927     pkg_config
1928     pkg_config_flags
1929     progs_suffix
1930     random_seed
1931     ranlib
1932     samples
1933     strip
1934     sws_max_filter_size
1935     sysinclude
1936     sysroot
1937     target_exec
1938     target_os
1939     target_path
1940     target_samples
1941     tempprefix
1942     toolchain
1943     valgrind
1944     yasmexe
1945 "
1946
1947 CMDLINE_APPEND="
1948     extra_cflags
1949     extra_cxxflags
1950     host_cppflags
1951 "
1952
1953 # code dependency declarations
1954
1955 # architecture extensions
1956
1957 armv5te_deps="arm"
1958 armv6_deps="arm"
1959 armv6t2_deps="arm"
1960 armv8_deps="aarch64"
1961 neon_deps_any="aarch64 arm"
1962 intrinsics_neon_deps="neon"
1963 vfp_deps_any="aarch64 arm"
1964 vfpv3_deps="vfp"
1965 setend_deps="arm"
1966
1967 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1968
1969 mipsfpu_deps="mips"
1970 mips32r2_deps="mips"
1971 mipsdspr1_deps="mips"
1972 mipsdspr2_deps="mips"
1973
1974 altivec_deps="ppc"
1975 ppc4xx_deps="ppc"
1976 vsx_deps="ppc"
1977
1978 cpunop_deps="i686"
1979 x86_64_select="i686"
1980 x86_64_suggest="fast_cmov"
1981
1982 amd3dnow_deps="mmx"
1983 amd3dnowext_deps="amd3dnow"
1984 i686_deps="x86"
1985 mmx_deps="x86"
1986 mmxext_deps="mmx"
1987 sse_deps="mmxext"
1988 sse2_deps="sse"
1989 sse3_deps="sse2"
1990 ssse3_deps="sse3"
1991 sse4_deps="ssse3"
1992 sse42_deps="sse4"
1993 avx_deps="sse42"
1994 xop_deps="avx"
1995 fma3_deps="avx"
1996 fma4_deps="avx"
1997 avx2_deps="avx"
1998
1999 mmx_external_deps="yasm"
2000 mmx_inline_deps="inline_asm"
2001 mmx_suggest="mmx_external mmx_inline"
2002
2003 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2004     eval dep=\$${ext}_deps
2005     eval ${ext}_external_deps='"${dep}_external"'
2006     eval ${ext}_inline_deps='"${dep}_inline"'
2007     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2008 done
2009
2010 aligned_stack_if_any="aarch64 ppc x86"
2011 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2012 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2013 fast_unaligned_if_any="aarch64 ppc x86"
2014 simd_align_16_if_any="altivec neon sse"
2015
2016 # system capabilities
2017
2018 symver_if_any="symver_asm_label symver_gnu_asm"
2019
2020 # threading support
2021 atomics_gcc_if="sync_val_compare_and_swap"
2022 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2023 atomics_win32_if="MemoryBarrier"
2024 atomics_native_if_any="$ATOMICS_LIST"
2025 w32threads_deps="atomics_native"
2026 threads_if_any="$THREADS_LIST"
2027
2028 # subsystems
2029 dct_select="rdft"
2030 error_resilience_select="me_cmp"
2031 faandct_deps="faan fdctdsp"
2032 faanidct_deps="faan idctdsp"
2033 frame_thread_encoder_deps="encoders threads"
2034 intrax8_select="error_resilience"
2035 mdct_select="fft"
2036 rdft_select="fft"
2037 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2038 mpeg_er_select="error_resilience"
2039 mpegaudio_select="mpegaudiodsp"
2040 mpegaudiodsp_select="dct"
2041 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2042 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2043
2044 # decoders / encoders
2045 aac_decoder_select="mdct sinewin"
2046 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2047 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2048 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2049 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2050 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2051 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2052 aic_decoder_select="golomb idctdsp"
2053 alac_encoder_select="lpc"
2054 als_decoder_select="bswapdsp"
2055 amrnb_decoder_select="lsp"
2056 amrwb_decoder_select="lsp"
2057 amv_decoder_select="sp5x_decoder exif"
2058 amv_encoder_select="aandcttables mpegvideoenc"
2059 ape_decoder_select="bswapdsp llauddsp"
2060 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2061 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2062 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2063 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2064 atrac1_decoder_select="mdct sinewin"
2065 atrac3_decoder_select="mdct"
2066 atrac3p_decoder_select="mdct sinewin"
2067 avrn_decoder_select="exif"
2068 bink_decoder_select="blockdsp hpeldsp"
2069 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2070 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2071 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2072 cllc_decoder_select="bswapdsp"
2073 comfortnoise_encoder_select="lpc"
2074 cook_decoder_select="audiodsp mdct sinewin"
2075 cscd_decoder_select="lzo"
2076 cscd_decoder_suggest="zlib"
2077 dca_decoder_select="mdct"
2078 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2079 dnxhd_decoder_select="blockdsp idctdsp"
2080 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2081 dvvideo_decoder_select="dvprofile idctdsp"
2082 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2083 dxa_decoder_select="zlib"
2084 eac3_decoder_select="ac3_decoder"
2085 eac3_encoder_select="ac3_encoder"
2086 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2087 eatgq_decoder_select="aandcttables"
2088 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2089 exr_decoder_select="zlib"
2090 ffv1_decoder_select="golomb rangecoder"
2091 ffv1_encoder_select="rangecoder"
2092 ffvhuff_decoder_select="huffyuv_decoder"
2093 ffvhuff_encoder_select="huffyuv_encoder"
2094 fic_decoder_select="golomb"
2095 flac_decoder_select="golomb"
2096 flac_encoder_select="bswapdsp golomb lpc"
2097 flashsv_decoder_select="zlib"
2098 flashsv_encoder_select="zlib"
2099 flashsv2_encoder_select="zlib"
2100 flashsv2_decoder_select="zlib"
2101 flv_decoder_select="h263_decoder"
2102 flv_encoder_select="h263_encoder"
2103 fourxm_decoder_select="blockdsp bswapdsp"
2104 fraps_decoder_select="bswapdsp huffman"
2105 g2m_decoder_select="blockdsp idctdsp zlib"
2106 g729_decoder_select="audiodsp"
2107 h261_decoder_select="mpeg_er mpegvideo"
2108 h261_encoder_select="aandcttables mpegvideoenc"
2109 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2110 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2111 h263i_decoder_select="h263_decoder"
2112 h263p_encoder_select="h263_encoder"
2113 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2114 h264_decoder_suggest="error_resilience"
2115 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2116 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2117 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2118 iac_decoder_select="imc_decoder"
2119 imc_decoder_select="bswapdsp fft mdct sinewin"
2120 indeo3_decoder_select="hpeldsp"
2121 interplay_video_decoder_select="hpeldsp"
2122 jpegls_decoder_select="golomb mjpeg_decoder"
2123 jpegls_encoder_select="golomb"
2124 jv_decoder_select="blockdsp"
2125 lagarith_decoder_select="huffyuvdsp"
2126 ljpeg_encoder_select="aandcttables idctdsp"
2127 loco_decoder_select="golomb"
2128 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2129 metasound_decoder_select="lsp mdct sinewin"
2130 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2131 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2132 mjpeg_encoder_select="aandcttables mpegvideoenc"
2133 mjpegb_decoder_select="mjpeg_decoder"
2134 mlp_decoder_select="mlp_parser"
2135 motionpixels_decoder_select="bswapdsp"
2136 mp1_decoder_select="mpegaudio"
2137 mp1float_decoder_select="mpegaudio"
2138 mp2_decoder_select="mpegaudio"
2139 mp2float_decoder_select="mpegaudio"
2140 mp3_decoder_select="mpegaudio"
2141 mp3adu_decoder_select="mpegaudio"
2142 mp3adufloat_decoder_select="mpegaudio"
2143 mp3float_decoder_select="mpegaudio"
2144 mp3on4_decoder_select="mpegaudio"
2145 mp3on4float_decoder_select="mpegaudio"
2146 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2147 mpc8_decoder_select="mpegaudiodsp"
2148 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2149 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2150 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2151 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2152 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2153 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2154 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2155 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2156 mpeg4_encoder_select="h263_encoder"
2157 msmpeg4v1_decoder_select="h263_decoder"
2158 msmpeg4v2_decoder_select="h263_decoder"
2159 msmpeg4v2_encoder_select="h263_encoder"
2160 msmpeg4v3_decoder_select="h263_decoder"
2161 msmpeg4v3_encoder_select="h263_encoder"
2162 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2163 mxpeg_decoder_select="mjpeg_decoder"
2164 nellymoser_decoder_select="mdct sinewin"
2165 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2166 nuv_decoder_select="idctdsp lzo"
2167 on2avc_decoder_select="mdct"
2168 opus_decoder_deps="swresample"
2169 png_decoder_select="zlib"
2170 png_encoder_select="huffyuvencdsp zlib"
2171 prores_decoder_select="blockdsp idctdsp"
2172 prores_encoder_select="fdctdsp"
2173 qcelp_decoder_select="lsp"
2174 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2175 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2176 ra_144_decoder_select="audiodsp"
2177 ralf_decoder_select="golomb"
2178 rawvideo_decoder_select="bswapdsp"
2179 rtjpeg_decoder_select="me_cmp"
2180 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2181 rv10_encoder_select="h263_encoder"
2182 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2183 rv20_encoder_select="h263_encoder"
2184 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2185 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2186 shorten_decoder_select="golomb"
2187 sipr_decoder_select="lsp"
2188 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2189 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2190 sonic_decoder_select="golomb rangecoder"
2191 sonic_encoder_select="golomb rangecoder"
2192 sonic_ls_encoder_select="golomb rangecoder"
2193 sp5x_decoder_select="mjpeg_decoder"
2194 svq1_decoder_select="hpeldsp"
2195 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2196 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2197 svq3_decoder_suggest="zlib"
2198 tak_decoder_select="audiodsp"
2199 theora_decoder_select="vp3_decoder"
2200 thp_decoder_select="mjpeg_decoder"
2201 tiff_decoder_suggest="zlib lzma"
2202 tiff_encoder_suggest="zlib"
2203 truehd_decoder_select="mlp_parser"
2204 truemotion2_decoder_select="bswapdsp"
2205 truespeech_decoder_select="bswapdsp"
2206 tscc_decoder_select="zlib"
2207 twinvq_decoder_select="mdct lsp sinewin"
2208 utvideo_decoder_select="bswapdsp"
2209 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2210 vble_decoder_select="huffyuvdsp"
2211 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2212 vc1image_decoder_select="vc1_decoder"
2213 vorbis_decoder_select="mdct"
2214 vorbis_encoder_select="mdct"
2215 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2216 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2217 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2218 vp6a_decoder_select="vp6_decoder"
2219 vp6f_decoder_select="vp6_decoder"
2220 vp7_decoder_select="h264pred videodsp"
2221 vp8_decoder_select="h264pred videodsp"
2222 vp9_decoder_select="videodsp vp9_parser"
2223 webp_decoder_select="vp8_decoder"
2224 wmalossless_decoder_select="llauddsp"
2225 wmapro_decoder_select="mdct sinewin wma_freqs"
2226 wmav1_decoder_select="mdct sinewin wma_freqs"
2227 wmav1_encoder_select="mdct sinewin wma_freqs"
2228 wmav2_decoder_select="mdct sinewin wma_freqs"
2229 wmav2_encoder_select="mdct sinewin wma_freqs"
2230 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2231 wmv1_decoder_select="h263_decoder"
2232 wmv1_encoder_select="h263_encoder"
2233 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2234 wmv2_encoder_select="h263_encoder"
2235 wmv3_decoder_select="vc1_decoder"
2236 wmv3image_decoder_select="wmv3_decoder"
2237 zerocodec_decoder_select="zlib"
2238 zlib_decoder_select="zlib"
2239 zlib_encoder_select="zlib"
2240 zmbv_decoder_select="zlib"
2241 zmbv_encoder_select="zlib"
2242
2243 # hardware accelerators
2244 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2245 dxva2_deps="dxva2api_h"
2246 vaapi_deps="va_va_h"
2247 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2248 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2249 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2250 xvmc_deps="X11_extensions_XvMClib_h"
2251
2252 h263_vaapi_hwaccel_deps="vaapi"
2253 h263_vaapi_hwaccel_select="h263_decoder"
2254 h263_vdpau_hwaccel_deps="vdpau"
2255 h263_vdpau_hwaccel_select="h263_decoder"
2256 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2257 h264_dxva2_hwaccel_deps="dxva2"
2258 h264_dxva2_hwaccel_select="h264_decoder"
2259 h264_vaapi_hwaccel_deps="vaapi"
2260 h264_vaapi_hwaccel_select="h264_decoder"
2261 h264_vda_decoder_deps="vda"
2262 h264_vda_decoder_select="h264_decoder"
2263 h264_vda_hwaccel_deps="vda"
2264 h264_vda_hwaccel_select="h264_decoder"
2265 h264_vda_old_hwaccel_deps="vda"
2266 h264_vda_old_hwaccel_select="h264_decoder"
2267 h264_vdpau_decoder_deps="vdpau"
2268 h264_vdpau_decoder_select="h264_decoder"
2269 h264_vdpau_hwaccel_deps="vdpau"
2270 h264_vdpau_hwaccel_select="h264_decoder"
2271 mpeg_vdpau_decoder_deps="vdpau"
2272 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2273 mpeg_xvmc_hwaccel_deps="xvmc"
2274 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2275 mpeg1_vdpau_decoder_deps="vdpau"
2276 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2277 mpeg1_vdpau_hwaccel_deps="vdpau"
2278 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2279 mpeg1_xvmc_hwaccel_deps="xvmc"
2280 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2281 mpeg2_crystalhd_decoder_select="crystalhd"
2282 mpeg2_dxva2_hwaccel_deps="dxva2"
2283 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2284 mpeg2_vaapi_hwaccel_deps="vaapi"
2285 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2286 mpeg2_vdpau_hwaccel_deps="vdpau"
2287 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2288 mpeg2_xvmc_hwaccel_deps="xvmc"
2289 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2290 mpeg4_crystalhd_decoder_select="crystalhd"
2291 mpeg4_vaapi_hwaccel_deps="vaapi"
2292 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2293 mpeg4_vdpau_decoder_deps="vdpau"
2294 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2295 mpeg4_vdpau_hwaccel_deps="vdpau"
2296 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2297 msmpeg4_crystalhd_decoder_select="crystalhd"
2298 vc1_crystalhd_decoder_select="crystalhd"
2299 vc1_dxva2_hwaccel_deps="dxva2"
2300 vc1_dxva2_hwaccel_select="vc1_decoder"
2301 vc1_vaapi_hwaccel_deps="vaapi"
2302 vc1_vaapi_hwaccel_select="vc1_decoder"
2303 vc1_vdpau_decoder_deps="vdpau"
2304 vc1_vdpau_decoder_select="vc1_decoder"
2305 vc1_vdpau_hwaccel_deps="vdpau"
2306 vc1_vdpau_hwaccel_select="vc1_decoder"
2307 wmv3_crystalhd_decoder_select="crystalhd"
2308 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2309 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2310 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2311 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2312
2313 # parsers
2314 h264_parser_select="h264_decoder"
2315 hevc_parser_select="hevc_decoder"
2316 mpegvideo_parser_select="mpegvideo"
2317 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2318 vc1_parser_select="mpegvideo startcode vc1_decoder"
2319
2320 # external libraries
2321 libaacplus_encoder_deps="libaacplus"
2322 libcelt_decoder_deps="libcelt"
2323 libfaac_encoder_deps="libfaac"
2324 libfaac_encoder_select="audio_frame_queue"
2325 libfdk_aac_decoder_deps="libfdk_aac"
2326 libfdk_aac_encoder_deps="libfdk_aac"
2327 libfdk_aac_encoder_select="audio_frame_queue"
2328 libgme_demuxer_deps="libgme"
2329 libgsm_decoder_deps="libgsm"
2330 libgsm_encoder_deps="libgsm"
2331 libgsm_ms_decoder_deps="libgsm"
2332 libgsm_ms_encoder_deps="libgsm"
2333 libilbc_decoder_deps="libilbc"
2334 libilbc_encoder_deps="libilbc"
2335 libmodplug_demuxer_deps="libmodplug"
2336 libmp3lame_encoder_deps="libmp3lame"
2337 libmp3lame_encoder_select="audio_frame_queue"
2338 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2339 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2340 libopencore_amrnb_encoder_select="audio_frame_queue"
2341 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2342 libopenjpeg_decoder_deps="libopenjpeg"
2343 libopenjpeg_encoder_deps="libopenjpeg"
2344 libopus_decoder_deps="libopus"
2345 libopus_encoder_deps="libopus"
2346 libopus_encoder_select="audio_frame_queue"
2347 libquvi_demuxer_deps="libquvi"
2348 libschroedinger_decoder_deps="libschroedinger"
2349 libschroedinger_encoder_deps="libschroedinger"
2350 libshine_encoder_deps="libshine"
2351 libshine_encoder_select="audio_frame_queue"
2352 libspeex_decoder_deps="libspeex"
2353 libspeex_encoder_deps="libspeex"
2354 libspeex_encoder_select="audio_frame_queue"
2355 libstagefright_h264_decoder_deps="libstagefright_h264"
2356 libtheora_encoder_deps="libtheora"
2357 libtwolame_encoder_deps="libtwolame"
2358 libvo_aacenc_encoder_deps="libvo_aacenc"
2359 libvo_aacenc_encoder_select="audio_frame_queue"
2360 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2361 libvorbis_decoder_deps="libvorbis"
2362 libvorbis_encoder_deps="libvorbis"
2363 libvorbis_encoder_select="audio_frame_queue"
2364 libvpx_vp8_decoder_deps="libvpx"
2365 libvpx_vp8_encoder_deps="libvpx"
2366 libvpx_vp9_decoder_deps="libvpx"
2367 libvpx_vp9_encoder_deps="libvpx"
2368 libwavpack_encoder_deps="libwavpack"
2369 libwebp_encoder_deps="libwebp"
2370 libx264_encoder_deps="libx264"
2371 libx264rgb_encoder_deps="libx264"
2372 libx265_encoder_deps="libx265"
2373 libxavs_encoder_deps="libxavs"
2374 libxvid_encoder_deps="libxvid"
2375 libutvideo_decoder_deps="libutvideo"
2376 libutvideo_encoder_deps="libutvideo"
2377 libzvbi_teletext_decoder_deps="libzvbi"
2378
2379 # demuxers / muxers
2380 ac3_demuxer_select="ac3_parser"
2381 asf_demuxer_select="riffdec"
2382 asf_muxer_select="riffenc"
2383 asf_stream_muxer_select="asf_muxer"
2384 avi_demuxer_select="riffdec exif"
2385 avi_muxer_select="riffenc"
2386 avisynth_demuxer_deps="avisynth"
2387 avisynth_demuxer_select="riffdec"
2388 caf_demuxer_select="riffdec"
2389 dirac_demuxer_select="dirac_parser"
2390 dts_demuxer_select="dca_parser"
2391 dtshd_demuxer_select="dca_parser"
2392 dv_demuxer_select="dvprofile"
2393 dv_muxer_select="dvprofile"
2394 dxa_demuxer_select="riffdec"
2395 eac3_demuxer_select="ac3_parser"
2396 f4v_muxer_select="mov_muxer"
2397 flac_demuxer_select="flac_parser"
2398 hds_muxer_select="flv_muxer"
2399 hls_muxer_select="mpegts_muxer"
2400 image2_alias_pix_demuxer_select="image2_demuxer"
2401 image2_brender_pix_demuxer_select="image2_demuxer"
2402 ipod_muxer_select="mov_muxer"
2403 ismv_muxer_select="mov_muxer"
2404 libnut_demuxer_deps="libnut"
2405 libnut_muxer_deps="libnut"
2406 matroska_audio_muxer_select="matroska_muxer"
2407 matroska_demuxer_select="riffdec"
2408 matroska_demuxer_suggest="bzlib lzo zlib"
2409 matroska_muxer_select="riffenc"
2410 mmf_muxer_select="riffenc"
2411 mov_demuxer_select="riffdec"
2412 mov_demuxer_suggest="zlib"
2413 mov_muxer_select="riffenc rtpenc_chain"
2414 mp3_demuxer_select="mpegaudio_parser"
2415 mp4_muxer_select="mov_muxer"
2416 mpegts_muxer_select="adts_muxer latm_muxer"
2417 mpegtsraw_demuxer_select="mpegts_demuxer"
2418 mxf_d10_muxer_select="mxf_muxer"
2419 nut_muxer_select="riffenc"
2420 nuv_demuxer_select="riffdec"
2421 oga_muxer_select="ogg_muxer"
2422 ogg_demuxer_select="golomb"
2423 opus_muxer_select="ogg_muxer"
2424 psp_muxer_select="mov_muxer"
2425 rtp_demuxer_select="sdp_demuxer"
2426 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2427 rtsp_demuxer_select="http_protocol rtpdec"
2428 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2429 sap_demuxer_select="sdp_demuxer"
2430 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2431 sdp_demuxer_select="rtpdec"
2432 smoothstreaming_muxer_select="ismv_muxer"
2433 spdif_muxer_select="aac_parser"
2434 spx_muxer_select="ogg_muxer"
2435 tak_demuxer_select="tak_parser"
2436 tg2_muxer_select="mov_muxer"
2437 tgp_muxer_select="mov_muxer"
2438 vobsub_demuxer_select="mpegps_demuxer"
2439 w64_demuxer_select="wav_demuxer"
2440 w64_muxer_select="wav_muxer"
2441 wav_demuxer_select="riffdec"
2442 wav_muxer_select="riffenc"
2443 webm_muxer_select="riffenc"
2444 wtv_demuxer_select="riffdec"
2445 wtv_muxer_select="riffenc"
2446 xmv_demuxer_select="riffdec"
2447 xwma_demuxer_select="riffdec"
2448
2449 # indevs / outdevs
2450 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2451 alsa_outdev_deps="alsa_asoundlib_h"
2452 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2453 avfoundation_indev_select="avfoundation"
2454 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2455 caca_outdev_deps="libcaca"
2456 decklink_outdev_deps="decklink pthreads"
2457 decklink_outdev_extralibs="-lstdc++"
2458 dshow_indev_deps="IBaseFilter"
2459 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2460 dv1394_indev_deps="dv1394"
2461 dv1394_indev_select="dv_demuxer"
2462 fbdev_indev_deps="linux_fb_h"
2463 fbdev_outdev_deps="linux_fb_h"
2464 gdigrab_indev_deps="CreateDIBSection"
2465 gdigrab_indev_extralibs="-lgdi32"
2466 gdigrab_indev_select="bmp_decoder"
2467 iec61883_indev_deps="libiec61883"
2468 jack_indev_deps="jack_jack_h sem_timedwait"
2469 lavfi_indev_deps="avfilter"
2470 libcdio_indev_deps="libcdio"
2471 libdc1394_indev_deps="libdc1394"
2472 libv4l2_indev_deps="libv4l2"
2473 openal_indev_deps="openal"
2474 opengl_outdev_deps="opengl"
2475 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2476 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2477 pulse_indev_deps="libpulse"
2478 pulse_outdev_deps="libpulse"
2479 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2480 qtkit_indev_select="qtkit"
2481 sdl_outdev_deps="sdl"
2482 sndio_indev_deps="sndio_h"
2483 sndio_outdev_deps="sndio_h"
2484 v4l_indev_deps="linux_videodev_h"
2485 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2486 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2487 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2488 vfwcap_indev_extralibs="-lavicap32"
2489 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2490 xv_outdev_extralibs="-lXv -lX11 -lXext"
2491 x11grab_indev_deps="x11grab"
2492
2493 # protocols
2494 bluray_protocol_deps="libbluray"
2495 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2496 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2497 ffrtmpcrypt_protocol_select="tcp_protocol"
2498 ffrtmphttp_protocol_deps="!librtmp_protocol"
2499 ffrtmphttp_protocol_select="http_protocol"
2500 ftp_protocol_select="tcp_protocol"
2501 gopher_protocol_select="network"
2502 http_protocol_select="tcp_protocol"
2503 httpproxy_protocol_select="tcp_protocol"
2504 https_protocol_select="tls_protocol"
2505 icecast_protocol_select="http_protocol"
2506 librtmp_protocol_deps="librtmp"
2507 librtmpe_protocol_deps="librtmp"
2508 librtmps_protocol_deps="librtmp"
2509 librtmpt_protocol_deps="librtmp"
2510 librtmpte_protocol_deps="librtmp"
2511 libsmbclient_protocol_deps="libsmbclient gplv3"
2512 libssh_protocol_deps="libssh"
2513 mmsh_protocol_select="http_protocol"
2514 mmst_protocol_select="network"
2515 rtmp_protocol_deps="!librtmp_protocol"
2516 rtmp_protocol_select="tcp_protocol"
2517 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2518 rtmps_protocol_deps="!librtmp_protocol"
2519 rtmps_protocol_select="tls_protocol"
2520 rtmpt_protocol_select="ffrtmphttp_protocol"
2521 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2522 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2523 rtp_protocol_select="udp_protocol"
2524 sctp_protocol_deps="struct_sctp_event_subscribe"
2525 sctp_protocol_select="network"
2526 srtp_protocol_select="rtp_protocol"
2527 tcp_protocol_select="network"
2528 tls_protocol_deps_any="openssl gnutls"
2529 tls_protocol_select="tcp_protocol"
2530 udp_protocol_select="network"
2531 unix_protocol_deps="sys_un_h"
2532 unix_protocol_select="network"
2533
2534 # filters
2535 aconvert_filter_deps="swresample"
2536 amovie_filter_deps="avcodec avformat"
2537 aresample_filter_deps="swresample"
2538 ass_filter_deps="libass"
2539 asyncts_filter_deps="avresample"
2540 atempo_filter_deps="avcodec"
2541 atempo_filter_select="rdft"
2542 azmq_filter_deps="libzmq"
2543 blackframe_filter_deps="gpl"
2544 boxblur_filter_deps="gpl"
2545 bs2b_filter_deps="libbs2b"
2546 colormatrix_filter_deps="gpl"
2547 cropdetect_filter_deps="gpl"
2548 delogo_filter_deps="gpl"
2549 deshake_filter_select="pixelutils"
2550 drawtext_filter_deps="libfreetype"
2551 ebur128_filter_deps="gpl"
2552 flite_filter_deps="libflite"
2553 frei0r_filter_deps="frei0r dlopen"
2554 frei0r_filter_extralibs='$ldl'
2555 frei0r_src_filter_deps="frei0r dlopen"
2556 frei0r_src_filter_extralibs='$ldl'
2557 geq_filter_deps="gpl"
2558 histeq_filter_deps="gpl"
2559 hqdn3d_filter_deps="gpl"
2560 interlace_filter_deps="gpl"
2561 kerndeint_filter_deps="gpl"
2562 ladspa_filter_deps="ladspa dlopen"
2563 ladspa_filter_extralibs='$ldl'
2564 mcdeint_filter_deps="avcodec gpl"
2565 movie_filter_deps="avcodec avformat"
2566 mp_filter_deps="gpl avcodec swscale inline_asm"
2567 mpdecimate_filter_deps="gpl"
2568 mpdecimate_filter_select="pixelutils"
2569 mptestsrc_filter_deps="gpl"
2570 negate_filter_deps="lut_filter"
2571 perspective_filter_deps="gpl"
2572 ocv_filter_deps="libopencv"
2573 owdenoise_filter_deps="gpl"
2574 pan_filter_deps="swresample"
2575 phase_filter_deps="gpl"
2576 pp_filter_deps="gpl postproc"
2577 pullup_filter_deps="gpl"
2578 removelogo_filter_deps="avcodec avformat swscale"
2579 resample_filter_deps="avresample"
2580 sab_filter_deps="gpl swscale"
2581 scale_filter_deps="swscale"
2582 select_filter_select="pixelutils"
2583 smartblur_filter_deps="gpl swscale"
2584 showspectrum_filter_deps="avcodec"
2585 showspectrum_filter_select="rdft"
2586 spp_filter_deps="gpl avcodec"
2587 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2588 stereo3d_filter_deps="gpl"
2589 subtitles_filter_deps="avformat avcodec libass"
2590 super2xsai_filter_deps="gpl"
2591 tinterlace_filter_deps="gpl"
2592 vidstabdetect_filter_deps="libvidstab"
2593 vidstabtransform_filter_deps="libvidstab"
2594 pixfmts_super2xsai_test_deps="super2xsai_filter"
2595 tinterlace_merge_test_deps="tinterlace_filter"
2596 tinterlace_pad_test_deps="tinterlace_filter"
2597 zmq_filter_deps="libzmq"
2598 zoompan_filter_deps="swscale"
2599
2600 # examples
2601 avio_reading="avformat avcodec avutil"
2602 avcodec_example_deps="avcodec avutil"
2603 decoding_encoding_example_deps="avcodec avformat avutil"
2604 demuxing_decoding_example_deps="avcodec avformat avutil"
2605 extract_mvs_example_deps="avcodec avformat avutil"
2606 filter_audio_example_deps="avfilter avutil"
2607 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2608 filtering_video_example_deps="avfilter avcodec avformat avutil"
2609 metadata_example_deps="avformat avutil"
2610 muxing_example_deps="avcodec avformat avutil swscale"
2611 remuxing_example_deps="avcodec avformat avutil"
2612 resampling_audio_example_deps="avutil swresample"
2613 scaling_video_example_deps="avutil swscale"
2614 transcode_aac_example_deps="avcodec avformat swresample"
2615 transcoding_example_deps="avfilter avcodec avformat avutil"
2616
2617 # libraries, in linking order
2618 avcodec_deps="avutil"
2619 avdevice_deps="avformat avcodec avutil"
2620 avfilter_deps="avutil"
2621 avformat_deps="avcodec avutil"
2622 avresample_deps="avutil"
2623 postproc_deps="avutil gpl"
2624 swresample_deps="avutil"
2625 swscale_deps="avutil"
2626
2627 # programs
2628 ffmpeg_deps="avcodec avfilter avformat swresample"
2629 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2630                null_filter
2631                setpts_filter trim_filter"
2632 ffplay_deps="avcodec avformat swscale swresample sdl"
2633 ffplay_libs='$sdl_libs'
2634 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2635 ffprobe_deps="avcodec avformat"
2636 ffserver_deps="avformat fork sarestart"
2637 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2638
2639 # documentation
2640 podpages_deps="perl"
2641 manpages_deps="perl pod2man"
2642 htmlpages_deps="perl"
2643 htmlpages_deps_any="makeinfo_html texi2html"
2644 txtpages_deps="perl makeinfo"
2645 doc_deps_any="manpages htmlpages podpages txtpages"
2646
2647 # default parameters
2648
2649 logfile="config.log"
2650
2651 # installation paths
2652 prefix_default="/usr/local"
2653 bindir_default='${prefix}/bin'
2654 datadir_default='${prefix}/share/ffmpeg'
2655 docdir_default='${prefix}/share/doc/ffmpeg'
2656 incdir_default='${prefix}/include'
2657 libdir_default='${prefix}/lib'
2658 mandir_default='${prefix}/share/man'
2659 shlibdir_default="$libdir_default"
2660
2661 # toolchain
2662 ar_default="ar"
2663 cc_default="gcc"
2664 cxx_default="g++"
2665 host_cc_default="gcc"
2666 cp_f="cp -f"
2667 doxygen_default="doxygen"
2668 install="install"
2669 ln_s="ln -s -f"
2670 nm_default="nm -g"
2671 objformat="elf"
2672 pkg_config_default=pkg-config
2673 ranlib_default="ranlib"
2674 strip_default="strip"
2675 yasmexe_default="yasm"
2676 windres_default="windres"
2677
2678 # OS
2679 target_os_default=$(tolower $(uname -s))
2680 host_os=$target_os_default
2681
2682 # machine
2683 if test "$target_os_default" = aix; then
2684     arch_default=$(uname -p)
2685     strip_default="strip -X32_64"
2686 else
2687     arch_default=$(uname -m)
2688 fi
2689 cpu="generic"
2690 intrinsics="none"
2691
2692 # configurable options
2693 enable $PROGRAM_LIST
2694 enable $DOCUMENT_LIST
2695 enable $EXAMPLE_LIST
2696 enable $(filter_out avresample $LIBRARY_LIST)
2697 enable stripping
2698
2699 enable asm
2700 enable debug
2701 enable doc
2702 enable faan faandct faanidct
2703 enable optimizations
2704 enable runtime_cpudetect
2705 enable safe_bitstream_reader
2706 enable static
2707 enable swscale_alpha
2708
2709 sws_max_filter_size_default=256
2710 set_default sws_max_filter_size
2711
2712 # Enable hwaccels by default.
2713 enable dxva2 vaapi vda vdpau xvmc
2714 enable xlib
2715
2716 # build settings
2717 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2718 LIBPREF="lib"
2719 LIBSUF=".a"
2720 FULLNAME='$(NAME)$(BUILDSUF)'
2721 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2722 SLIBPREF="lib"
2723 SLIBSUF=".so"
2724 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2725 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2726 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2727 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2728 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2729 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2730
2731 asflags_filter=echo
2732 cflags_filter=echo
2733 ldflags_filter=echo
2734
2735 AS_C='-c'
2736 AS_O='-o $@'
2737 CC_C='-c'
2738 CC_E='-E -o $@'
2739 CC_O='-o $@'
2740 CXX_C='-c'
2741 CXX_O='-o $@'
2742 LD_O='-o $@'
2743 LD_LIB='-l%'
2744 LD_PATH='-L'
2745 HOSTCC_C='-c'
2746 HOSTCC_E='-E -o $@'
2747 HOSTCC_O='-o $@'
2748 HOSTLD_O='-o $@'
2749
2750 host_libs='-lm'
2751 host_cflags_filter=echo
2752 host_ldflags_filter=echo
2753
2754 target_path='$(CURDIR)'
2755
2756 # since the object filename is not given with the -MM flag, the compiler
2757 # is only able to print the basename, and we must add the path ourselves
2758 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2759 DEPFLAGS='-MM'
2760
2761 # find source path
2762 if test -f configure; then
2763     source_path=.
2764 else
2765     source_path=$(cd $(dirname "$0"); pwd)
2766     echo "$source_path" | grep -q '[[:blank:]]' &&
2767         die "Out of tree builds are impossible with whitespace in source path."
2768     test -e "$source_path/config.h" &&
2769         die "Out of tree builds are impossible with config.h in source dir."
2770 fi
2771
2772 for v in "$@"; do
2773     r=${v#*=}
2774     l=${v%"$r"}
2775     r=$(sh_quote "$r")
2776     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2777 done
2778
2779 find_things(){
2780     thing=$1
2781     pattern=$2
2782     file=$source_path/$3
2783     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2784 }
2785
2786 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2787 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2788 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2789 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2790 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2791 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2792 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2793 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2794 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2795 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2796 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2797
2798 ALL_COMPONENTS="
2799     $BSF_LIST
2800     $DECODER_LIST
2801     $DEMUXER_LIST
2802     $ENCODER_LIST
2803     $FILTER_LIST
2804     $HWACCEL_LIST
2805     $INDEV_LIST
2806     $MUXER_LIST
2807     $OUTDEV_LIST
2808     $PARSER_LIST
2809     $PROTOCOL_LIST
2810 "
2811
2812 for n in $COMPONENT_LIST; do
2813     v=$(toupper ${n%s})_LIST
2814     eval enable \$$v
2815     eval ${n}_if_any="\$$v"
2816 done
2817
2818 enable $ARCH_EXT_LIST
2819
2820 die_unknown(){
2821     echo "Unknown option \"$1\"."
2822     echo "See $0 --help for available options."
2823     exit 1
2824 }
2825
2826 print_3_columns() {
2827     cat | tr ' ' '\n' | sort | pr -r -3 -t
2828 }
2829
2830 show_list() {
2831     suffix=_$1
2832     shift
2833     echo $* | sed s/$suffix//g | print_3_columns
2834     exit 0
2835 }
2836
2837 rand_list(){
2838     IFS=', '
2839     set -- $*
2840     unset IFS
2841     for thing; do
2842         comp=${thing%:*}
2843         prob=${thing#$comp}
2844         prob=${prob#:}
2845         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2846         echo "prob ${prob:-0.5}"
2847         printf '%s\n' $comp
2848     done
2849 }
2850
2851 do_random(){
2852     action=$1
2853     shift
2854     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2855     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2856 }
2857
2858 for opt do
2859     optval="${opt#*=}"
2860     case "$opt" in
2861         --extra-ldflags=*)
2862             add_ldflags $optval
2863         ;;
2864         --extra-ldexeflags=*)
2865             add_ldexeflags $optval
2866         ;;
2867         --extra-libs=*)
2868             add_extralibs $optval
2869         ;;
2870         --disable-devices)
2871             disable $INDEV_LIST $OUTDEV_LIST
2872         ;;
2873         --enable-debug=*)
2874             debuglevel="$optval"
2875         ;;
2876         --disable-programs)
2877             disable $PROGRAM_LIST
2878         ;;
2879         --disable-everything)
2880             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2881         ;;
2882         --disable-all)
2883             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2884             disable $LIBRARY_LIST $PROGRAM_LIST doc
2885         ;;
2886         --enable-random|--disable-random)
2887             action=${opt%%-random}
2888             do_random ${action#--} $COMPONENT_LIST
2889         ;;
2890         --enable-random=*|--disable-random=*)
2891             action=${opt%%-random=*}
2892             do_random ${action#--} $optval
2893         ;;
2894         --enable-*=*|--disable-*=*)
2895             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2896             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2897             eval list=\$$(toupper $thing)_LIST
2898             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2899             list=$(filter "$name" $list)
2900             [ "$list" = "" ] && warn "Option $opt did not match anything"
2901             $action $list
2902         ;;
2903         --enable-?*|--disable-?*)
2904             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2905             if is_in $option $COMPONENT_LIST; then
2906                 test $action = disable && action=unset
2907                 eval $action \$$(toupper ${option%s})_LIST
2908             elif is_in $option $CMDLINE_SELECT; then
2909                 $action $option
2910             else
2911                 die_unknown $opt
2912             fi
2913         ;;
2914         --list-*)
2915             NAME="${opt#--list-}"
2916             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2917             NAME=${NAME%s}
2918             eval show_list $NAME \$$(toupper $NAME)_LIST
2919         ;;
2920         --help|-h) show_help
2921         ;;
2922         --fatal-warnings) enable fatal_warnings
2923         ;;
2924         *)
2925             optname="${opt%%=*}"
2926             optname="${optname#--}"
2927             optname=$(echo "$optname" | sed 's/-/_/g')
2928             if is_in $optname $CMDLINE_SET; then
2929                 eval $optname='$optval'
2930             elif is_in $optname $CMDLINE_APPEND; then
2931                 append $optname "$optval"
2932             else
2933                 die_unknown $opt
2934             fi
2935         ;;
2936     esac
2937 done
2938
2939 disabled logging && logfile=/dev/null
2940
2941 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2942 set >> $logfile
2943
2944 test -n "$cross_prefix" && enable cross_compile
2945
2946 if enabled cross_compile; then
2947     test -n "$arch" && test -n "$target_os" ||
2948         die "Must specify target arch and OS when cross-compiling"
2949 fi
2950
2951 ar_default="${cross_prefix}${ar_default}"
2952 cc_default="${cross_prefix}${cc_default}"
2953 cxx_default="${cross_prefix}${cxx_default}"
2954 nm_default="${cross_prefix}${nm_default}"
2955 pkg_config_default="${cross_prefix}${pkg_config_default}"
2956 ranlib_default="${cross_prefix}${ranlib_default}"
2957 strip_default="${cross_prefix}${strip_default}"
2958 windres_default="${cross_prefix}${windres_default}"
2959
2960 sysinclude_default="${sysroot}/usr/include"
2961
2962 test -n "$valgrind" && toolchain="valgrind-memcheck"
2963
2964 case "$toolchain" in
2965     clang-asan)
2966         cc_default="clang"
2967         add_cflags  -fsanitize=address
2968         add_ldflags -fsanitize=address
2969     ;;
2970     clang-tsan)
2971         cc_default="clang"
2972         add_cflags  -fsanitize=thread -pie
2973         add_ldflags -fsanitize=thread -pie
2974     ;;
2975     clang-usan)
2976         cc_default="clang"
2977         add_cflags  -fsanitize=undefined
2978         add_ldflags -fsanitize=undefined
2979     ;;
2980     gcc-asan)
2981         cc_default="gcc"
2982         add_cflags  -fsanitize=address
2983         add_ldflags -fsanitize=address
2984     ;;
2985     gcc-tsan)
2986         cc_default="gcc"
2987         add_cflags  -fsanitize=thread -pie -fPIC
2988         add_ldflags -fsanitize=thread -pie -fPIC
2989     ;;
2990     gcc-usan)
2991         cc_default="gcc"
2992         add_cflags  -fsanitize=undefined
2993         add_ldflags -fsanitize=undefined
2994     ;;
2995     valgrind-massif)
2996         target_exec_default=${valgrind:-"valgrind"}
2997         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"
2998     ;;
2999     valgrind-memcheck)
3000         target_exec_default=${valgrind:-"valgrind"}
3001         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3002     ;;
3003     msvc)
3004         # Check whether the current MSVC version needs the C99 converter.
3005         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3006         # support enough of C99 to build ffmpeg. Default to the new
3007         # behaviour if the regexp was unable to match anything, since this
3008         # successfully parses the version number of existing supported
3009         # versions that require the converter (MSVC 2010 and 2012).
3010         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3011         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3012             cc_default="cl"
3013         else
3014             cc_default="c99wrap cl"
3015         fi
3016         ld_default="link"
3017         nm_default="dumpbin -symbols"
3018         ar_default="lib"
3019         target_os_default="win32"
3020         # Use a relative path for TMPDIR. This makes sure all the
3021         # ffconf temp files are written with a relative path, avoiding
3022         # issues with msys/win32 path conversion for MSVC parameters
3023         # such as -Fo<file> or -out:<file>.
3024         TMPDIR=.
3025     ;;
3026     icl)
3027         cc_default="icl"
3028         ld_default="xilink"
3029         nm_default="dumpbin -symbols"
3030         ar_default="xilib"
3031         target_os_default="win32"
3032         TMPDIR=.
3033     ;;
3034     gcov)
3035         add_cflags  -fprofile-arcs -ftest-coverage
3036         add_ldflags -fprofile-arcs -ftest-coverage
3037     ;;
3038     hardened)
3039         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
3040         add_ldflags -Wl,-z,relro -Wl,-z,now
3041     ;;
3042     ?*)
3043         die "Unknown toolchain $toolchain"
3044     ;;
3045 esac
3046
3047 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3048     target_exec target_os yasmexe
3049 enabled cross_compile || host_cc_default=$cc
3050 set_default host_cc
3051
3052 if ! $pkg_config --version >/dev/null 2>&1; then
3053     warn "$pkg_config not found, library detection may fail."
3054     pkg_config=false
3055 fi
3056
3057 if test $doxygen != $doxygen_default && \
3058   ! $doxygen --version >/dev/null 2>&1; then
3059     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3060 fi
3061
3062 exesuf() {
3063     case $1 in
3064         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3065     esac
3066 }
3067
3068 EXESUF=$(exesuf $target_os)
3069 HOSTEXESUF=$(exesuf $host_os)
3070
3071 # set temporary file name
3072 : ${TMPDIR:=$TEMPDIR}
3073 : ${TMPDIR:=$TMP}
3074 : ${TMPDIR:=/tmp}
3075
3076 if [ -n "$tempprefix" ] ; then
3077     mktemp(){
3078         echo $tempprefix.${HOSTNAME}.${UID}
3079     }
3080 elif ! check_cmd mktemp -u XXXXXX; then
3081     # simple replacement for missing mktemp
3082     # NOT SAFE FOR GENERAL USE
3083     mktemp(){
3084         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3085     }
3086 fi
3087
3088 tmpfile(){
3089     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3090         (set -C; exec > $tmp) 2>/dev/null ||
3091         die "Unable to create temporary file in $TMPDIR."
3092     append TMPFILES $tmp
3093     eval $1=$tmp
3094 }
3095
3096 trap 'rm -f -- $TMPFILES' EXIT
3097
3098 tmpfile TMPASM .asm
3099 tmpfile TMPC   .c
3100 tmpfile TMPCPP .cpp
3101 tmpfile TMPE   $EXESUF
3102 tmpfile TMPH   .h
3103 tmpfile TMPM   .m
3104 tmpfile TMPO   .o
3105 tmpfile TMPS   .S
3106 tmpfile TMPSH  .sh
3107 tmpfile TMPV   .ver
3108
3109 unset -f mktemp
3110
3111 chmod +x $TMPE
3112
3113 # make sure we can execute files in $TMPDIR
3114 cat > $TMPSH 2>> $logfile <<EOF
3115 #! /bin/sh
3116 EOF
3117 chmod +x $TMPSH >> $logfile 2>&1
3118 if ! $TMPSH >> $logfile 2>&1; then
3119     cat <<EOF
3120 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3121 variable to another directory and make sure that it is not mounted noexec.
3122 EOF
3123     die "Sanity test failed."
3124 fi
3125
3126 armasm_flags(){
3127     for flag; do
3128         case $flag in
3129             # Filter out MSVC cl.exe options from cflags that shouldn't
3130             # be passed to gas-preprocessor
3131             -M[TD]*)                                            ;;
3132             *)                  echo $flag                      ;;
3133         esac
3134    done
3135 }
3136
3137 ccc_flags(){
3138     for flag; do
3139         case $flag in
3140             -std=c99)           echo -c99                       ;;
3141             -mcpu=*)            echo -arch ${flag#*=}           ;;
3142             -mieee)             echo -ieee                      ;;
3143             -O*|-fast)          echo $flag                      ;;
3144             -fno-math-errno)    echo -assume nomath_errno       ;;
3145             -g)                 echo -g3                        ;;
3146             -Wall)              echo -msg_enable level2         ;;
3147             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3148             -Wl,*)              echo $flag                      ;;
3149             -f*|-W*)                                            ;;
3150             *)                  echo $flag                      ;;
3151         esac
3152    done
3153 }
3154
3155 cparser_flags(){
3156     for flag; do
3157         case $flag in
3158             -Wno-switch)             echo -Wno-switch-enum ;;
3159             -Wno-format-zero-length) ;;
3160             -Wdisabled-optimization) ;;
3161             -Wno-pointer-sign)       echo -Wno-other ;;
3162             *)                       echo $flag ;;
3163         esac
3164     done
3165 }
3166
3167 msvc_common_flags(){
3168     for flag; do
3169         case $flag in
3170             # In addition to specifying certain flags under the compiler
3171             # specific filters, they must be specified here as well or else the
3172             # generic catch all at the bottom will print the original flag.
3173             -Wall)                ;;
3174             -std=c99)             ;;
3175             # Common flags
3176             -fomit-frame-pointer) ;;
3177             -g)                   echo -Z7 ;;
3178             -fno-math-errno)      ;;
3179             -fno-common)          ;;
3180             -fno-signed-zeros)    ;;
3181             -fPIC)                ;;
3182             -mthumb)              ;;
3183             -march=*)             ;;
3184             -lz)                  echo zlib.lib ;;
3185             -lavifil32)           echo vfw32.lib ;;
3186             -lavicap32)           echo vfw32.lib user32.lib ;;
3187             -l*)                  echo ${flag#-l}.lib ;;
3188             *)                    echo $flag ;;
3189         esac
3190     done
3191 }
3192
3193 msvc_flags(){
3194     msvc_common_flags "$@"
3195     for flag; do
3196         case $flag in
3197             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3198                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3199                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3200                                        -wd4554 \
3201                                        -wd4273 -wd4701 ;;
3202         esac
3203     done
3204 }
3205
3206 icl_flags(){
3207     msvc_common_flags "$@"
3208     for flag; do
3209         case $flag in
3210             # Despite what Intel's documentation says -Wall, which is supported
3211             # on Windows, does enable remarks so disable them here.
3212             -Wall)                echo $flag -Qdiag-disable:remark ;;
3213             -std=c99)             echo -Qstd=c99 ;;
3214             -flto)                echo -ipo ;;
3215         esac
3216     done
3217 }
3218
3219 icc_flags(){
3220     for flag; do
3221         case $flag in
3222             -flto)                echo -ipo ;;
3223             *)                    echo $flag ;;
3224         esac
3225     done
3226 }
3227
3228 pgi_flags(){
3229     for flag; do
3230         case $flag in
3231             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3232             -fomit-frame-pointer) echo -Mnoframe ;;
3233             -g)                   echo -gopt ;;
3234             *)                    echo $flag ;;
3235         esac
3236     done
3237 }
3238
3239 suncc_flags(){
3240     for flag; do
3241         case $flag in
3242             -march=*|-mcpu=*)
3243                 case "${flag#*=}" in
3244                     native)                   echo -xtarget=native       ;;
3245                     v9|niagara)               echo -xarch=sparc          ;;
3246                     ultrasparc)               echo -xarch=sparcvis       ;;
3247                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3248                     i586|pentium)             echo -xchip=pentium        ;;
3249                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3250                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3251                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3252                     pentium4*)          echo -xtarget=pentium4           ;;
3253                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3254                     *-sse3)             echo -xarch=sse3                 ;;
3255                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3256                     bonnell)                   echo -xarch=ssse3         ;;
3257                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3258                     westmere)                  echo -xtarget=westmere    ;;
3259                     silvermont)                echo -xarch=sse4_2        ;;
3260                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3261                     core-avx*|ivybridge|haswell|broadwell)
3262                                                echo -xarch=avx           ;;
3263                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3264                     btver1)                    echo -xarch=amdsse4a      ;;
3265                     btver2|bdver*)             echo -xarch=avx           ;;
3266                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3267                     k8|opteron|athlon64|athlon-fx)
3268                                                echo -xarch=sse2a         ;;
3269                     athlon*)                   echo -xarch=pentium_proa  ;;
3270                 esac
3271                 ;;
3272             -std=c99)             echo -xc99              ;;
3273             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3274             -fPIC)                echo -KPIC -xcode=pic32 ;;
3275             -W*,*)                echo $flag              ;;
3276             -f*-*|-W*|-mimpure-text)                      ;;
3277             -shared)              echo -G                 ;;
3278             *)                    echo $flag              ;;
3279         esac
3280     done
3281 }
3282
3283 tms470_flags(){
3284     for flag; do
3285         case $flag in
3286             -march=*|-mcpu=*)
3287                 case "${flag#*=}" in
3288                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3289                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3290                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3291                     armv6*|arm11*)          echo -mv=6   ;;
3292                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3293                                             echo -mv=5e  ;;
3294                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3295                 esac
3296                 ;;
3297             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3298             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3299             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3300             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3301             -msoft-float)   echo --float_support=vfplib       ;;
3302             -O[0-3]|-mf=*)  echo $flag                        ;;
3303             -g)             echo -g -mn                       ;;
3304             -pds=*)         echo $flag                        ;;
3305             -D*|-I*)        echo $flag                        ;;
3306             --gcc|--abi=*)  echo $flag                        ;;
3307             -me)            echo $flag                        ;;
3308         esac
3309     done
3310 }
3311
3312 probe_cc(){
3313     pfx=$1
3314     _cc=$2
3315
3316     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3317     unset _ld_o _ldflags _ld_lib _ld_path
3318     unset _depflags _DEPCMD _DEPFLAGS
3319     _flags_filter=echo
3320
3321     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3322         true # no-op to avoid reading stdin in following checks
3323     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3324         _type=llvm_gcc
3325         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3326         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3327         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3328         _cflags_speed='-O3'
3329         _cflags_size='-Os'
3330     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3331         _type=gcc
3332         gcc_version=$($_cc --version | head -n1)
3333         gcc_basever=$($_cc -dumpversion)
3334         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3335         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3336         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3337         if ! $_cc -dumpversion | grep -q '^2\.'; then
3338             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3339         fi
3340         _cflags_speed='-O3'
3341         _cflags_size='-Os'
3342     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3343         _type=icc
3344         _ident=$($_cc --version | head -n1)
3345         _depflags='-MMD'
3346         _cflags_speed='-O3'
3347         _cflags_size='-Os'
3348         _cflags_noopt='-O1'
3349         _flags_filter=icc_flags
3350     elif $_cc -v 2>&1 | grep -q xlc; then
3351         _type=xlc
3352         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3353         _cflags_speed='-O5'
3354         _cflags_size='-O5 -qcompact'
3355     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3356         _type=ccc
3357         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3358         _DEPFLAGS='-M'
3359         _cflags_speed='-fast'
3360         _cflags_size='-O1'
3361         _flags_filter=ccc_flags
3362     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3363         test -d "$sysroot" || die "No valid sysroot specified."
3364         _type=armcc
3365         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3366         armcc_conf="$PWD/armcc.conf"
3367         $_cc --arm_linux_configure                 \
3368              --arm_linux_config_file="$armcc_conf" \
3369              --configure_sysroot="$sysroot"        \
3370              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3371              die "Error creating armcc configuration file."
3372         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3373         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3374         as_default="${cross_prefix}gcc"
3375         _depflags='-MMD'
3376         _cflags_speed='-O3'
3377         _cflags_size='-Os'
3378     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3379         _type=tms470
3380         _ident=$($_cc -version | head -n1 | tr -s ' ')
3381         _flags='--gcc --abi=eabi -me'
3382         _cc_e='-ppl -fe=$@'
3383         _cc_o='-fe=$@'
3384         _depflags='-ppa -ppd=$(@:.o=.d)'
3385         _cflags_speed='-O3 -mf=5'
3386         _cflags_size='-O3 -mf=2'
3387         _flags_filter=tms470_flags
3388     elif $_cc -v 2>&1 | grep -q clang; then
3389         _type=clang
3390         _ident=$($_cc --version | head -n1)
3391         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3392         _cflags_speed='-O3'
3393         _cflags_size='-Os'
3394     elif $_cc -V 2>&1 | grep -q Sun; then
3395         _type=suncc
3396         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3397         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3398         _DEPFLAGS='-xM1 -xc99'
3399         _ldflags='-std=c99'
3400         _cflags_speed='-O5'
3401         _cflags_size='-O5 -xspace'
3402         _flags_filter=suncc_flags
3403     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3404         _type=pathscale
3405         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3406         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3407         _cflags_speed='-O2'
3408         _cflags_size='-Os'
3409         _flags_filter='filter_out -Wdisabled-optimization'
3410     elif $_cc -v 2>&1 | grep -q Open64; then
3411         _type=open64
3412         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3413         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3414         _cflags_speed='-O2'
3415         _cflags_size='-Os'
3416         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3417     elif $_cc -V 2>&1 | grep -q Portland; then
3418         _type=pgi
3419         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3420         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3421         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3422         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3423         _cflags_noopt="-O"
3424         _flags_filter=pgi_flags
3425     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3426         _type=armasm
3427         _ident=$($_cc | head -n1)
3428         # 4509: "This form of conditional instruction is deprecated"
3429         _flags="-nologo -ignore 4509"
3430         _flags_filter=armasm_flags
3431     elif $_cc 2>&1 | grep -q Microsoft; then
3432         _type=msvc
3433         _ident=$($cc 2>&1 | head -n1)
3434         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3435         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3436         _cflags_speed="-O2"
3437         _cflags_size="-O1"
3438         if $_cc 2>&1 | grep -q Linker; then
3439             _ld_o='-out:$@'
3440         else
3441             _ld_o='-Fe$@'
3442         fi
3443         _cc_o='-Fo$@'
3444         _cc_e='-P -Fi$@'
3445         _flags_filter=msvc_flags
3446         _ld_lib='lib%.a'
3447         _ld_path='-libpath:'
3448         _flags='-nologo'
3449         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3450         if [ $pfx = hostcc ]; then
3451             append _cflags -Dsnprintf=_snprintf
3452         fi
3453         disable stripping
3454     elif $_cc 2>&1 | grep -q Intel; then
3455         _type=icl
3456         _ident=$($cc 2>&1 | head -n1)
3457         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3458         # Not only is O3 broken on 13.x+ but it is slower on all previous
3459         # versions (tested) as well.
3460         _cflags_speed="-O2"
3461         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3462         if $_cc 2>&1 | grep -q Linker; then
3463             _ld_o='-out:$@'
3464         else
3465             _ld_o='-Fe$@'
3466         fi
3467         _cc_o='-Fo$@'
3468         _cc_e='-P'
3469         _flags_filter=icl_flags
3470         _ld_lib='lib%.a'
3471         _ld_path='-libpath:'
3472         # -Qdiag-error to make icl error when seeing certain unknown arguments
3473         _flags='-nologo -Qdiag-error:4044,10157'
3474         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3475         # with MSVC which enables it by default.
3476         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3477         if [ $pfx = hostcc ]; then
3478             append _cflags -Dsnprintf=_snprintf
3479         fi
3480     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3481         _type=cparser
3482         _ident=$($_cc --version | head -n1)
3483         _depflags='-MMD'
3484         _cflags_speed='-O4'
3485         _cflags_size='-O2'
3486         _flags_filter=cparser_flags
3487     fi
3488
3489     eval ${pfx}_type=\$_type
3490     eval ${pfx}_ident=\$_ident
3491 }
3492
3493 set_ccvars(){
3494     eval ${1}_C=\${_cc_c-\${${1}_C}}
3495     eval ${1}_E=\${_cc_e-\${${1}_E}}
3496     eval ${1}_O=\${_cc_o-\${${1}_O}}
3497
3498     if [ -n "$_depflags" ]; then
3499         eval ${1}_DEPFLAGS=\$_depflags
3500     else
3501         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3502         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3503         eval DEP${1}FLAGS=\$_flags
3504     fi
3505 }
3506
3507 probe_cc cc "$cc"
3508 cflags_filter=$_flags_filter
3509 cflags_speed=$_cflags_speed
3510 cflags_size=$_cflags_size
3511 cflags_noopt=$_cflags_noopt
3512 add_cflags $_flags $_cflags
3513 cc_ldflags=$_ldflags
3514 set_ccvars CC
3515
3516 probe_cc hostcc "$host_cc"
3517 host_cflags_filter=$_flags_filter
3518 add_host_cflags  $_flags $_cflags
3519 set_ccvars HOSTCC
3520
3521 test -n "$cc_type" && enable $cc_type ||
3522     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3523
3524 : ${as_default:=$cc}
3525 : ${dep_cc_default:=$cc}
3526 : ${ld_default:=$cc}
3527 : ${host_ld_default:=$host_cc}
3528 set_default ar as dep_cc ld host_ld windres
3529
3530 probe_cc as "$as"
3531 asflags_filter=$_flags_filter
3532 add_asflags $_flags $_cflags
3533 set_ccvars AS
3534
3535 probe_cc ld "$ld"
3536 ldflags_filter=$_flags_filter
3537 add_ldflags $_flags $_ldflags
3538 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3539 LD_O=${_ld_o-$LD_O}
3540 LD_LIB=${_ld_lib-$LD_LIB}
3541 LD_PATH=${_ld_path-$LD_PATH}
3542
3543 probe_cc hostld "$host_ld"
3544 host_ldflags_filter=$_flags_filter
3545 add_host_ldflags $_flags $_ldflags
3546 HOSTLD_O=${_ld_o-$HOSTLD_O}
3547
3548 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3549     probe_cc depcc "$dep_cc"
3550     CCDEP=${_DEPCMD:-$DEPCMD}
3551     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3552     DEPCCFLAGS=$_flags
3553 fi
3554
3555 if $ar 2>&1 | grep -q Microsoft; then
3556     arflags="-nologo"
3557     ar_o='-out:$@'
3558 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3559     arflags="rq"
3560     ar_o='$@'
3561 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3562     arflags='-Xany -r -c'
3563     ar_o='$@'
3564 else
3565     arflags="rc"
3566     ar_o='$@'
3567 fi
3568
3569 add_cflags $extra_cflags
3570 add_cxxflags $extra_cxxflags
3571 add_asflags $extra_cflags
3572
3573 if test -n "$sysroot"; then
3574     case "$cc_type" in
3575         gcc|llvm_gcc|clang)
3576             add_cppflags --sysroot="$sysroot"
3577             add_ldflags --sysroot="$sysroot"
3578 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3579             add_cppflags -isysroot "$sysroot"
3580             add_ldflags -isysroot "$sysroot"
3581         ;;
3582         tms470)
3583             add_cppflags -I"$sysinclude"
3584             add_ldflags  --sysroot="$sysroot"
3585         ;;
3586     esac
3587 fi
3588
3589 if test "$cpu" = host; then
3590     enabled cross_compile &&
3591         die "--cpu=host makes no sense when cross-compiling."
3592
3593     case "$cc_type" in
3594         gcc|llvm_gcc)
3595             check_native(){
3596                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3597                 sed -n "/cc1.*$1=/{
3598                             s/.*$1=\\([^ ]*\\).*/\\1/
3599                             p
3600                             q
3601                         }" $TMPE
3602             }
3603             cpu=$(check_native -march || check_native -mcpu)
3604         ;;
3605     esac
3606
3607     test "${cpu:-host}" = host &&
3608         die "--cpu=host not supported with compiler $cc"
3609 fi
3610
3611 # Deal with common $arch aliases
3612 case "$arch" in
3613     aarch64|arm64)
3614         arch="aarch64"
3615     ;;
3616     arm*|iPad*|iPhone*)
3617         arch="arm"
3618     ;;
3619     mips*|IP*)
3620         arch="mips"
3621     ;;
3622     parisc*|hppa*)
3623         arch="parisc"
3624     ;;
3625     "Power Macintosh"|ppc*|powerpc*)
3626         arch="ppc"
3627     ;;
3628     s390|s390x)
3629         arch="s390"
3630     ;;
3631     sh4|sh)
3632         arch="sh4"
3633     ;;
3634     sun4u|sparc*)
3635         arch="sparc"
3636     ;;
3637     tilegx|tile-gx)
3638         arch="tilegx"
3639     ;;
3640     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3641         arch="x86"
3642     ;;
3643 esac
3644
3645 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3646 enable $arch
3647
3648 # Add processor-specific flags
3649 if enabled aarch64; then
3650
3651     case $cpu in
3652         armv*)
3653             cpuflags="-march=$cpu"
3654         ;;
3655         *)
3656             cpuflags="-mcpu=$cpu"
3657         ;;
3658     esac
3659
3660 elif enabled alpha; then
3661
3662     cpuflags="-mcpu=$cpu"
3663
3664 elif enabled arm; then
3665
3666     check_arm_arch() {
3667         check_cpp_condition stddef.h \
3668             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3669             $cpuflags
3670     }
3671
3672     probe_arm_arch() {
3673         if   check_arm_arch 4;        then echo armv4;
3674         elif check_arm_arch 4T;       then echo armv4t;
3675         elif check_arm_arch 5;        then echo armv5;
3676         elif check_arm_arch 5E;       then echo armv5e;
3677         elif check_arm_arch 5T;       then echo armv5t;
3678         elif check_arm_arch 5TE;      then echo armv5te;
3679         elif check_arm_arch 5TEJ;     then echo armv5te;
3680         elif check_arm_arch 6;        then echo armv6;
3681         elif check_arm_arch 6J;       then echo armv6j;
3682         elif check_arm_arch 6K;       then echo armv6k;
3683         elif check_arm_arch 6Z;       then echo armv6z;
3684         elif check_arm_arch 6ZK;      then echo armv6zk;
3685         elif check_arm_arch 6T2;      then echo armv6t2;
3686         elif check_arm_arch 7;        then echo armv7;
3687         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3688         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3689         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3690         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3691         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3692         fi
3693     }
3694
3695     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3696
3697     case $cpu in
3698         armv*)
3699             cpuflags="-march=$cpu"
3700             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3701         ;;
3702         *)
3703             cpuflags="-mcpu=$cpu"
3704             case $cpu in
3705                 cortex-a*)                               subarch=armv7a  ;;
3706                 cortex-r*)                               subarch=armv7r  ;;
3707                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3708                 arm11*)                                  subarch=armv6   ;;
3709                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3710                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3711                 *)                             subarch=$(probe_arm_arch) ;;
3712             esac
3713         ;;
3714     esac
3715
3716     case "$subarch" in
3717         armv5t*)    enable fast_clz                ;;
3718         armv[6-8]*)
3719             enable fast_clz
3720             disabled fast_unaligned || enable fast_unaligned
3721             ;;
3722     esac
3723
3724 elif enabled avr32; then
3725
3726     case $cpu in
3727         ap7[02]0[0-2])
3728             subarch="avr32_ap"
3729             cpuflags="-mpart=$cpu"
3730         ;;
3731         ap)
3732             subarch="avr32_ap"
3733             cpuflags="-march=$cpu"
3734         ;;
3735         uc3[ab]*)
3736             subarch="avr32_uc"
3737             cpuflags="-mcpu=$cpu"
3738         ;;
3739         uc)
3740             subarch="avr32_uc"
3741             cpuflags="-march=$cpu"
3742         ;;
3743     esac
3744
3745 elif enabled bfin; then
3746
3747     cpuflags="-mcpu=$cpu"
3748
3749 elif enabled mips; then
3750
3751     cpuflags="-march=$cpu"
3752
3753     case $cpu in
3754         24kc)
3755             disable mipsfpu
3756             disable mipsdspr1
3757             disable mipsdspr2
3758         ;;
3759         24kf*)
3760             disable mipsdspr1
3761             disable mipsdspr2
3762         ;;
3763         24kec|34kc|1004kc)
3764             disable mipsfpu
3765             disable mipsdspr2
3766         ;;
3767         24kef*|34kf*|1004kf*)
3768             disable mipsdspr2
3769         ;;
3770         74kc)
3771             disable mipsfpu
3772         ;;
3773     esac
3774
3775 elif enabled ppc; then
3776
3777     disable ldbrx
3778     disable vsx
3779
3780     case $(tolower $cpu) in
3781         601|ppc601|powerpc601)
3782             cpuflags="-mcpu=601"
3783             disable altivec
3784         ;;
3785         603*|ppc603*|powerpc603*)
3786             cpuflags="-mcpu=603"
3787             disable altivec
3788         ;;
3789         604*|ppc604*|powerpc604*)
3790             cpuflags="-mcpu=604"
3791             disable altivec
3792         ;;
3793         g3|75*|ppc75*|powerpc75*)
3794             cpuflags="-mcpu=750"
3795             disable altivec
3796         ;;
3797         g4|745*|ppc745*|powerpc745*)
3798             cpuflags="-mcpu=7450"
3799         ;;
3800         74*|ppc74*|powerpc74*)
3801             cpuflags="-mcpu=7400"
3802         ;;
3803         g5|970|ppc970|powerpc970)
3804             cpuflags="-mcpu=970"
3805         ;;
3806         power[3-8]*)
3807             cpuflags="-mcpu=$cpu"
3808         ;;
3809         cell)
3810             cpuflags="-mcpu=cell"
3811             enable ldbrx
3812         ;;
3813         e500mc)
3814             cpuflags="-mcpu=e500mc"
3815             disable altivec
3816         ;;
3817         e500v2)
3818             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3819             disable altivec
3820             disable dcbzl
3821         ;;
3822         e500)
3823             cpuflags="-mcpu=8540 -mhard-float"
3824             disable altivec
3825             disable dcbzl
3826         ;;
3827     esac
3828
3829 elif enabled sparc; then
3830
3831     case $cpu in
3832         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3833             cpuflags="-mcpu=$cpu"
3834         ;;
3835         ultrasparc*|niagara[234])
3836             cpuflags="-mcpu=$cpu"
3837         ;;
3838     esac
3839
3840 elif enabled x86; then
3841
3842     case $cpu in
3843         i[345]86|pentium)
3844             cpuflags="-march=$cpu"
3845             disable mmx
3846         ;;
3847         # targets that do NOT support nopl and conditional mov (cmov)
3848         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3849             cpuflags="-march=$cpu"
3850             disable i686
3851         ;;
3852         # targets that do support nopl and conditional mov (cmov)
3853         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3854         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3855             cpuflags="-march=$cpu"
3856             enable i686
3857             enable fast_cmov
3858         ;;
3859         # targets that do support conditional mov but on which it's slow
3860         pentium4|pentium4m|prescott|nocona)
3861             cpuflags="-march=$cpu"
3862             enable i686
3863             disable fast_cmov
3864         ;;
3865     esac
3866
3867 fi
3868
3869 if [ "$cpu" != generic ]; then
3870     add_cflags  $cpuflags
3871     add_asflags $cpuflags
3872 fi
3873
3874 # compiler sanity check
3875 check_exec <<EOF
3876 int main(void){ return 0; }
3877 EOF
3878 if test "$?" != 0; then
3879     echo "$cc is unable to create an executable file."
3880     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3881         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3882         echo "Only do this if you know what cross compiling means."
3883     fi
3884     die "C compiler test failed."
3885 fi
3886
3887 add_cppflags -D_ISOC99_SOURCE
3888 add_cxxflags -D__STDC_CONSTANT_MACROS
3889 check_cflags -std=c99
3890 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3891 #include <stdlib.h>
3892 EOF
3893 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3894 #include <stdlib.h>
3895 EOF
3896
3897 add_host_cppflags -D_ISOC99_SOURCE
3898 check_host_cflags -std=c99
3899 check_host_cflags -Wall
3900 check_host_cflags -O3
3901
3902 check_64bit(){
3903     arch32=$1
3904     arch64=$2
3905     expr=$3
3906     check_code cc "" "int test[2*($expr) - 1]" &&
3907         subarch=$arch64 || subarch=$arch32
3908 }
3909
3910 case "$arch" in
3911     aarch64|alpha|ia64)
3912         spic=$shared
3913     ;;
3914     mips)
3915         check_64bit mips mips64 '_MIPS_SIM > 1'
3916         spic=$shared
3917     ;;
3918     parisc)
3919         check_64bit parisc parisc64 'sizeof(void *) > 4'
3920         spic=$shared
3921     ;;
3922     ppc)
3923         check_64bit ppc ppc64 'sizeof(void *) > 4'
3924         spic=$shared
3925     ;;
3926     s390)
3927         check_64bit s390 s390x 'sizeof(void *) > 4'
3928         spic=$shared
3929     ;;
3930     sparc)
3931         check_64bit sparc sparc64 'sizeof(void *) > 4'
3932         spic=$shared
3933     ;;
3934     x86)
3935         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3936         if test "$subarch" = "x86_64"; then
3937             spic=$shared
3938         fi
3939     ;;
3940     ppc)
3941         check_cc <<EOF && subarch="ppc64"
3942         int test[(int)sizeof(char*) - 7];
3943 EOF
3944     ;;
3945 esac
3946
3947 enable $subarch
3948 enabled spic && enable_weak pic
3949
3950 # OS specific
3951 case $target_os in
3952     aix)
3953         SHFLAGS=-shared
3954         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3955         enabled shared && add_ldflags -Wl,-brtl
3956         ;;
3957     android)
3958         disable symver
3959         SLIB_INSTALL_NAME='$(SLIBNAME)'
3960         SLIB_INSTALL_LINKS=
3961         # soname not set on purpose
3962         SHFLAGS=-shared
3963         ;;
3964     haiku)
3965         prefix_default="/boot/common"
3966         network_extralibs="-lnetwork"
3967         host_libs=
3968         ;;
3969     sunos)
3970         SHFLAGS='-shared -Wl,-h,$$(@F)'
3971         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3972         network_extralibs="-lsocket -lnsl"
3973         # When using suncc to build, the Solaris linker will mark
3974         # an executable with each instruction set encountered by
3975         # the Solaris assembler.  As our libraries contain their own
3976         # guards for processor-specific code, instead suppress
3977         # generation of the HWCAPS ELF section on Solaris x86 only.
3978         enabled_all suncc x86 &&
3979             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3980             add_ldflags -Wl,-M,mapfile
3981         nm_default='nm -P -g'
3982         ;;
3983     netbsd)
3984         disable symver
3985         oss_indev_extralibs="-lossaudio"
3986         oss_outdev_extralibs="-lossaudio"
3987         enabled gcc || check_ldflags -Wl,-zmuldefs
3988         ;;
3989     openbsd|bitrig)
3990         disable symver
3991         SHFLAGS='-shared'
3992         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3993         SLIB_INSTALL_LINKS=
3994         oss_indev_extralibs="-lossaudio"
3995         oss_outdev_extralibs="-lossaudio"
3996         ;;
3997     dragonfly)
3998         disable symver
3999         ;;
4000     freebsd)
4001         ;;
4002     bsd/os)
4003         add_extralibs -lpoll -lgnugetopt
4004         strip="strip -d"
4005         ;;
4006     darwin)
4007         enabled ppc && add_asflags -force_cpusubtype_ALL
4008         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4009         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4010         strip="${strip} -x"
4011         add_ldflags -Wl,-dynamic,-search_paths_first
4012         SLIBSUF=".dylib"
4013         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4014         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4015         objformat="macho"
4016         enabled x86_64 && objformat="macho64"
4017         enabled_any pic shared ||
4018             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4019         ;;
4020     mingw32*)
4021         if test $target_os = "mingw32ce"; then
4022             disable network
4023         else
4024             target_os=mingw32
4025         fi
4026         LIBTARGET=i386
4027         if enabled x86_64; then
4028             LIBTARGET="i386:x86-64"
4029         elif enabled arm; then
4030             LIBTARGET=arm-wince
4031         fi
4032         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4033         check_ldflags -Wl,--nxcompat
4034         check_ldflags -Wl,--dynamicbase
4035         shlibdir_default="$bindir_default"
4036         SLIBPREF=""
4037         SLIBSUF=".dll"
4038         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4039         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4040         dlltool="${cross_prefix}dlltool"
4041         if check_cmd lib.exe -list; then
4042             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4043             if enabled x86_64; then
4044                 LIBTARGET=x64
4045             fi
4046         elif check_cmd $dlltool --version; then
4047             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4048         fi
4049         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4050         SLIB_INSTALL_LINKS=
4051         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4052         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4053         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4054         objformat="win32"
4055         ranlib=:
4056         enable dos_paths
4057         ;;
4058     win32|win64)
4059         disable symver
4060         if enabled shared; then
4061             # Link to the import library instead of the normal static library
4062             # for shared libs.
4063             LD_LIB='%.lib'
4064             # Cannot build both shared and static libs with MSVC or icl.
4065             disable static
4066         fi
4067         shlibdir_default="$bindir_default"
4068         SLIBPREF=""
4069         SLIBSUF=".dll"
4070         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4071         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4072         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4073         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4074         SLIB_INSTALL_LINKS=
4075         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4076         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4077         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4078         objformat="win32"
4079         ranlib=:
4080         enable dos_paths
4081         ;;
4082     cygwin*)
4083         target_os=cygwin
4084         shlibdir_default="$bindir_default"
4085         SLIBPREF="cyg"
4086         SLIBSUF=".dll"
4087         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4088         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4089         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4090         SLIB_INSTALL_LINKS=
4091         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4092         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4093         objformat="win32"
4094         enable dos_paths
4095         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4096         ;;
4097     *-dos|freedos|opendos)
4098         network_extralibs="-lsocket"
4099         objformat="coff"
4100         enable dos_paths
4101         add_cppflags -U__STRICT_ANSI__
4102         ;;
4103     linux)
4104         enable dv1394
4105         ;;
4106     irix*)
4107         target_os=irix
4108         ranlib="echo ignoring ranlib"
4109         ;;
4110     os/2*)
4111         strip="lxlite -CS"
4112         ln_s="cp -f"
4113         objformat="aout"
4114         add_cppflags -D_GNU_SOURCE
4115         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4116         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4117         LIBSUF="_s.a"
4118         SLIBPREF=""
4119         SLIBSUF=".dll"
4120         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4121         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4122         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4123             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4124             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4125             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4126             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4127             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4128         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4129             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4130         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4131         enable dos_paths
4132         enable_weak os2threads
4133         ;;
4134     gnu/kfreebsd)
4135         add_cppflags -D_BSD_SOURCE
4136         ;;
4137     gnu)
4138         ;;
4139     qnx)
4140         add_cppflags -D_QNX_SOURCE
4141         network_extralibs="-lsocket"
4142         ;;
4143     symbian)
4144         SLIBSUF=".dll"
4145         enable dos_paths
4146         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4147         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4148         add_ldflags -Wl,--target1-abs,--no-undefined \
4149                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4150                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4151         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4152                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4153                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4154         ;;
4155     osf1)
4156         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4157         ;;
4158     minix)
4159         ;;
4160     plan9)
4161         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4162                      -D_REENTRANT_SOURCE        \
4163                      -D_RESEARCH_SOURCE         \
4164                      -DFD_SETSIZE=96            \
4165                      -DHAVE_SOCK_OPTS
4166         add_compat strtod.o strtod=avpriv_strtod
4167         network_extralibs='-lbsd'
4168         exeobjs=compat/plan9/main.o
4169         disable ffserver
4170         cp_f='cp'
4171         ;;
4172     none)
4173         ;;
4174     *)
4175         die "Unknown OS '$target_os'."
4176         ;;
4177 esac
4178
4179 # determine libc flavour
4180
4181 probe_libc(){
4182     pfx=$1
4183     pfx_no_=${pfx%_}
4184     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4185     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4186         eval ${pfx}libc_type=uclibc
4187         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4188     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4189         eval ${pfx}libc_type=glibc
4190         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4191     # MinGW headers can be installed on Cygwin, so check for newlib first.
4192     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4193         eval ${pfx}libc_type=newlib
4194         add_${pfx}cppflags -U__STRICT_ANSI__
4195     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4196     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4197         eval ${pfx}libc_type=mingw64
4198         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4199             add_compat msvcrt/snprintf.o
4200             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4201         fi
4202         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4203         eval test \$${pfx_no_}cc_type = "gcc" &&
4204             add_${pfx}cppflags -D__printf__=__gnu_printf__
4205     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4206          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4207         eval ${pfx}libc_type=mingw32
4208         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4209             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4210             die "ERROR: MinGW32 runtime version must be >= 3.15."
4211         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4212         eval test \$${pfx_no_}cc_type = "gcc" &&
4213             add_${pfx}cppflags -D__printf__=__gnu_printf__
4214     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4215         eval ${pfx}libc_type=msvcrt
4216         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4217         # 0x601 by default unless something else is set by the user.
4218         # This can easily lead to us detecting functions only present
4219         # in such new versions and producing binaries requiring windows 7.0.
4220         # Therefore explicitly set the default to XP unless the user has
4221         # set something else on the command line.
4222         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4223             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4224     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4225         eval ${pfx}libc_type=klibc
4226     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4227         eval ${pfx}libc_type=bionic
4228     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4229         eval ${pfx}libc_type=solaris
4230         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4231     fi
4232 }
4233
4234 probe_libc
4235 test -n "$libc_type" && enable libc_$libc_type
4236 probe_libc host_
4237 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4238
4239 case $libc_type in
4240     bionic)
4241         add_compat strtod.o strtod=avpriv_strtod
4242         ;;
4243     msvcrt)
4244         add_compat strtod.o strtod=avpriv_strtod
4245         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4246                                      _snprintf=avpriv_snprintf  \
4247                                      vsnprintf=avpriv_vsnprintf
4248         ;;
4249 esac
4250
4251 # hacks for compiler/libc/os combinations
4252
4253 if enabled_all tms470 libc_glibc; then
4254     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4255     add_cppflags -D__USER_LABEL_PREFIX__=
4256     add_cppflags -D__builtin_memset=memset
4257     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4258     add_cflags   -pds=48    # incompatible redefinition of macro
4259 fi
4260
4261 if enabled_all ccc libc_glibc; then
4262     add_ldflags -Wl,-z,now  # calls to libots crash without this
4263 fi
4264
4265 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4266     add_cppflags '-I\$(SRC_PATH)/compat/float'
4267
4268 esc(){
4269     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4270 }
4271
4272 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4273
4274 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4275
4276 set_default $PATHS_LIST
4277 set_default nm
4278
4279 # we need to build at least one lib type
4280 if ! enabled_any static shared; then
4281     cat <<EOF
4282 At least one library type must be built.
4283 Specify --enable-static to build the static libraries or --enable-shared to
4284 build the shared libraries as well. To only build the shared libraries specify
4285 --disable-static in addition to --enable-shared.
4286 EOF
4287     exit 1;
4288 fi
4289
4290 die_license_disabled() {
4291     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4292 }
4293
4294 die_license_disabled_gpl() {
4295     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4296 }
4297
4298 die_license_disabled gpl frei0r
4299 die_license_disabled gpl libcdio
4300 die_license_disabled gpl libsmbclient
4301 die_license_disabled gpl libutvideo
4302 die_license_disabled gpl libvidstab
4303 die_license_disabled gpl libx264
4304 die_license_disabled gpl libx265
4305 die_license_disabled gpl libxavs
4306 die_license_disabled gpl libxvid
4307 die_license_disabled gpl libzvbi
4308 die_license_disabled gpl x11grab
4309
4310 die_license_disabled nonfree libaacplus
4311 die_license_disabled nonfree libfaac
4312 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4313 enabled gpl && die_license_disabled_gpl nonfree openssl
4314
4315 die_license_disabled version3 libopencore_amrnb
4316 die_license_disabled version3 libopencore_amrwb
4317 die_license_disabled version3 libsmbclient
4318 die_license_disabled version3 libvo_aacenc
4319 die_license_disabled version3 libvo_amrwbenc
4320
4321 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4322
4323 disabled optimizations || check_cflags -fomit-frame-pointer
4324
4325 enable_weak_pic() {
4326     disabled pic && return
4327     enable pic
4328     add_cppflags -DPIC
4329     case "$target_os" in
4330     mingw*|cygwin*)
4331         ;;
4332     *)
4333         add_cflags -fPIC
4334         ;;
4335     esac
4336     add_asflags  -fPIC
4337 }
4338
4339 enabled pic && enable_weak_pic
4340
4341 check_cc <<EOF || die "Symbol mangling check failed."
4342 int ff_extern;
4343 EOF
4344 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4345 extern_prefix=${sym%%ff_extern*}
4346
4347 check_cc <<EOF && enable_weak inline_asm
4348 void foo(void) { __asm__ volatile ("" ::); }
4349 EOF
4350
4351 _restrict=
4352 for restrict_keyword in restrict __restrict__ __restrict; do
4353     check_cc <<EOF && _restrict=$restrict_keyword && break
4354 void foo(char * $restrict_keyword p);
4355 EOF
4356 done
4357
4358 check_cc <<EOF && enable pragma_deprecated
4359 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4360 EOF
4361
4362 check_cc <<EOF && enable attribute_packed
4363 struct { int x; } __attribute__((packed)) x;
4364 EOF
4365
4366 check_cc <<EOF && enable attribute_may_alias
4367 union { int x; } __attribute__((may_alias)) x;
4368 EOF
4369
4370 check_cc <<EOF || die "endian test failed"
4371 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4372 EOF
4373 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4374
4375 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4376     if ! enabled bigendian ;then
4377         enable vsx
4378     fi
4379 fi
4380
4381 check_gas() {
4382     log "check_gas using '$as' as AS"
4383     # :vararg is used on aarch64, arm and ppc altivec
4384     check_as <<EOF || return 1
4385 .macro m n, y:vararg=0
4386 \n: .int \y
4387 .endm
4388 m x
4389 EOF
4390     # .altmacro is only used in arm asm
4391     ! enabled arm || check_as <<EOF || return 1
4392 .altmacro
4393 EOF
4394     enable gnu_as
4395     return 0
4396 }
4397
4398 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4399     nogas=:
4400     enabled_any arm aarch64 && nogas=die
4401     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4402     as_noop=-v
4403
4404     case $as_type in
4405         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4406         gcc)  gaspp_as_type=gas ;;
4407         *)    gaspp_as_type=$as_type ;;
4408     esac
4409
4410     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4411
4412     test "${as#*gas-preprocessor.pl}" != "$as" ||
4413     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4414         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4415
4416     if ! check_gas ; then
4417         as=${gas:=$as}
4418         check_gas || \
4419             $nogas "GNU assembler not found, install/update gas-preprocessor"
4420     fi
4421
4422     check_as <<EOF && enable as_func
4423 .func test
4424 .endfunc
4425 EOF
4426 fi
4427
4428 check_inline_asm inline_asm_labels '"1:\n"'
4429
4430 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4431
4432 if enabled aarch64; then
4433     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4434     # internal assembler in clang 3.3 does not support this instruction
4435     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4436     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4437
4438     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4439
4440 elif enabled alpha; then
4441
4442     check_cflags -mieee
4443
4444 elif enabled arm; then
4445
4446     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4447 float func(float a, float b){ return a+b; }
4448 EOF
4449
4450     enabled thumb && check_cflags -mthumb || check_cflags -marm
4451
4452     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4453         enable vfp_args
4454     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4455         case "${cross_prefix:-$cc}" in
4456             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4457             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4458 __asm__ (".eabi_attribute 28, 1");
4459 int main(void) { return 0; }
4460 EOF
4461         esac
4462         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4463     fi
4464
4465     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4466     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4467     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4468     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4469     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4470     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4471     enabled setend  && check_insn setend  'setend be'
4472
4473     [ $target_os = linux ] || [ $target_os = android ] ||
4474         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4475             $ARCH_EXT_LIST_ARM
4476
4477     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4478
4479     check_as <<EOF && enable as_dn_directive
4480 ra .dn d0.i16
4481 .unreq ra
4482 EOF
4483
4484     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4485
4486 elif enabled mips; then
4487
4488     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4489     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4490      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4491     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4492      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4493     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4494      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4495     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4496      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4497
4498 elif enabled parisc; then
4499
4500     if enabled gcc; then
4501         case $($cc -dumpversion) in
4502             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4503         esac
4504     fi
4505
4506 elif enabled ppc; then
4507
4508     enable local_aligned_8 local_aligned_16 local_aligned_32
4509
4510     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4511     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4512     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4513     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4514
4515     # AltiVec flags: The FSF version of GCC differs from the Apple version
4516     if enabled altivec; then
4517         check_cflags -maltivec -mabi=altivec &&
4518         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4519         check_cflags -faltivec
4520
4521         # check if our compiler supports Motorola AltiVec C API
4522         check_cc <<EOF || disable altivec
4523 $inc_altivec_h
4524 int main(void) {
4525     vector signed int v1 = (vector signed int) { 0 };
4526     vector signed int v2 = (vector signed int) { 1 };
4527     v1 = vec_add(v1, v2);
4528     return 0;
4529 }
4530 EOF
4531
4532         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4533     fi
4534
4535     if enabled vsx; then
4536         check_cflags -mvsx
4537     fi
4538 elif enabled x86; then
4539
4540     check_builtin rdtsc    intrin.h   "__rdtsc()"
4541     check_builtin mm_empty mmintrin.h "_mm_empty()"
4542
4543     enable local_aligned_8 local_aligned_16 local_aligned_32
4544
4545     # check whether EBP is available on x86
4546     # As 'i' is stored on the stack, this program will crash
4547     # if the base pointer is used to access it because the
4548     # base pointer is cleared in the inline assembly code.
4549     check_exec_crash <<EOF && enable ebp_available
4550 volatile int i=0;
4551 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4552 return i;
4553 EOF
4554
4555     # check whether EBX is available on x86
4556     check_inline_asm ebx_available '""::"b"(0)' &&
4557         check_inline_asm ebx_available '"":::"%ebx"'
4558
4559     # check whether xmm clobbers are supported
4560     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4561
4562     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4563         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4564
4565     # check whether binutils is new enough to compile SSSE3/MMXEXT
4566     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4567     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4568
4569     if ! disabled_any asm mmx yasm; then
4570         if check_cmd $yasmexe --version; then
4571             enabled x86_64 && yasm_extra="-m amd64"
4572             yasm_debug="-g dwarf2"
4573         elif check_cmd nasm -v; then
4574             yasmexe=nasm
4575             yasm_debug="-g -F dwarf"
4576             if enabled x86_64; then
4577                 case "$objformat" in
4578                     elf)   objformat=elf64 ;;
4579                     win32) objformat=win64 ;;
4580                 esac
4581             fi
4582         fi
4583
4584         YASMFLAGS="-f $objformat $yasm_extra"
4585         enabled pic               && append YASMFLAGS "-DPIC"
4586         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4587         case "$objformat" in
4588             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4589         esac
4590
4591         check_yasm "movbe ecx, [5]" && enable yasm ||
4592             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4593         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4594         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4595         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4596         check_yasm "CPU amdnop" || disable cpunop
4597     fi
4598
4599     case "$cpu" in
4600         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4601             disable fast_clz
4602         ;;
4603     esac
4604
4605 fi
4606
4607 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4608
4609 check_ldflags -Wl,--as-needed
4610
4611 if check_func dlopen; then
4612     ldl=
4613 elif check_func dlopen -ldl; then
4614     ldl=-ldl
4615 fi
4616
4617 if ! disabled network; then
4618     check_func getaddrinfo $network_extralibs
4619     check_func getservbyport $network_extralibs
4620     check_func inet_aton $network_extralibs
4621
4622     check_type netdb.h "struct addrinfo"
4623     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4624     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4625     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4626     check_type poll.h "struct pollfd"
4627     check_type netinet/sctp.h "struct sctp_event_subscribe"
4628     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4629     check_type netinet/in.h "struct sockaddr_in6"
4630     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4631     check_type "sys/types.h sys/socket.h" socklen_t
4632
4633     # Prefer arpa/inet.h over winsock2
4634     if check_header arpa/inet.h ; then
4635         check_func closesocket
4636     elif check_header winsock2.h ; then
4637         check_func_headers winsock2.h closesocket -lws2 &&
4638             network_extralibs="-lws2" ||
4639         { check_func_headers winsock2.h closesocket -lws2_32 &&
4640             network_extralibs="-lws2_32"; } || disable winsock2_h network
4641         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4642
4643         check_type ws2tcpip.h socklen_t
4644         check_type ws2tcpip.h "struct addrinfo"
4645         check_type ws2tcpip.h "struct group_source_req"
4646         check_type ws2tcpip.h "struct ip_mreq_source"
4647         check_type ws2tcpip.h "struct ipv6_mreq"
4648         check_type winsock2.h "struct pollfd"
4649         check_struct winsock2.h "struct sockaddr" sa_len
4650         check_type ws2tcpip.h "struct sockaddr_in6"
4651         check_type ws2tcpip.h "struct sockaddr_storage"
4652     else
4653         disable network
4654     fi
4655 fi
4656
4657 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4658 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4659 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4660 check_builtin sarestart signal.h "SA_RESTART"
4661 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4662
4663 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4664 check_func  ${malloc_prefix}memalign            && enable memalign
4665 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4666
4667 check_func  access
4668 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt; }
4669 check_func  fcntl
4670 check_func  fork
4671 check_func  gethrtime
4672 check_func  getopt
4673 check_func  getrusage
4674 check_func  gettimeofday
4675 check_func  isatty
4676 check_func  localtime_r
4677 check_func  mach_absolute_time
4678 check_func  mkstemp
4679 check_func  mmap
4680 check_func  mprotect
4681 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4682 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4683 check_func  sched_getaffinity
4684 check_func  setrlimit
4685 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4686 check_func  strerror_r
4687 check_func  sysconf
4688 check_func  sysctl
4689 check_func  usleep
4690
4691 check_func_headers conio.h kbhit
4692 check_func_headers io.h setmode
4693 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4694 check_func_headers stdlib.h getenv
4695
4696 check_func_headers windows.h CoTaskMemFree -lole32
4697 check_func_headers windows.h GetProcessAffinityMask
4698 check_func_headers windows.h GetProcessTimes
4699 check_func_headers windows.h GetSystemTimeAsFileTime
4700 check_func_headers windows.h MapViewOfFile
4701 check_func_headers windows.h PeekNamedPipe
4702 check_func_headers windows.h SetConsoleTextAttribute
4703 check_func_headers windows.h Sleep
4704 check_func_headers windows.h VirtualAlloc
4705 check_func_headers glob.h glob
4706 enabled xlib &&
4707     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4708
4709 check_header cl/cl.h
4710 check_header direct.h
4711 check_header dlfcn.h
4712 check_header dxva.h
4713 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4714 check_header io.h
4715 check_header libcrystalhd/libcrystalhd_if.h
4716 check_header mach/mach_time.h
4717 check_header malloc.h
4718 check_header poll.h
4719 check_header sys/mman.h
4720 check_header sys/param.h
4721 check_header sys/resource.h
4722 check_header sys/select.h
4723 check_header sys/time.h
4724 check_header sys/un.h
4725 check_header termios.h
4726 check_header unistd.h
4727 check_header vdpau/vdpau.h
4728 check_header vdpau/vdpau_x11.h
4729 check_header VideoDecodeAcceleration/VDADecoder.h
4730 check_header windows.h
4731 check_header X11/extensions/XvMClib.h
4732 check_header asm/types.h
4733
4734 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4735 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4736 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4737
4738 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4739
4740 if ! disabled w32threads && ! enabled pthreads; then
4741     check_func_headers "windows.h process.h" _beginthreadex &&
4742         enable w32threads || disable w32threads
4743 fi
4744
4745 # check for some common methods of building with pthread support
4746 # do this before the optional library checks as some of them require pthreads
4747 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4748     enable pthreads
4749     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4750         add_cflags -pthread
4751         add_extralibs -pthread
4752     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4753         add_cflags -pthreads
4754         add_extralibs -pthreads
4755     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4756         add_cflags -ldl -pthread
4757         add_extralibs -ldl -pthread
4758     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4759         add_extralibs -lpthreadGC2
4760     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4761         :
4762     elif ! check_func pthread_join && ! check_func pthread_create; then
4763         disable pthreads
4764     fi
4765     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4766 fi
4767
4768
4769 if enabled pthreads; then
4770   check_func pthread_cancel
4771 fi
4772
4773 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4774 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4775 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4776
4777 check_lib math.h sin -lm && LIBM="-lm"
4778 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4779
4780 atan2f_args=2
4781 ldexpf_args=2
4782 powf_args=2
4783 fminf_args=2
4784
4785 for func in $MATH_FUNCS; do
4786     eval check_mathfunc $func \${${func}_args:-1}
4787 done
4788
4789 # these are off by default, so fail if requested and not available
4790 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4791 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4792                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4793                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4794 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4795 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4796 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4797 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4798 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4799 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4800 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4801 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4802 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4803 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4804                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4805                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4806 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4807 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4808 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4809 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"
4810 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4811 enabled fontconfig        && enable libfontconfig
4812 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4813 enabled libfreetype       && require_libfreetype
4814 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4815 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4816 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4817                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4818                                done || die "ERROR: libgsm not found"; }
4819 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4820 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
4821 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4822 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4823 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4824 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4825 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4826 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4827                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4828                                die "ERROR: libopenjpeg not found"; }
4829 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4830 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
4831 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4832 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4833 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4834 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4835 enabled libsmbclient      && { { check_pkg_config smbclient libsmbclient.h smbc_init &&
4836                                  require_pkg_config smbclient libsmbclient.h smbc_init; } ||
4837                                  require smbclient libsmbclient.h smbc_init -lsmbclient; }
4838 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4839 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4840 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4841 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4842     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4843     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4844 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4845 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4846                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4847                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4848 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4849 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4850 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4851 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4852 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4853 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4854 enabled libvpx            && {
4855     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4856                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4857     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4858                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4859     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4860     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx || disable libvpx_vp9_encoder; } }
4861 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4862 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion &&
4863                              { check_code cc webp/encode.h "WebPPicture wp; wp.use_argb++" ||
4864                                die "ERROR: libwebp too old."; }
4865 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4866                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4867                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4868 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4869                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4870                                die "ERROR: libx265 version must be >= 17."; }
4871 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4872 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4873 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4874 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4875 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4876                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4877                                die "ERROR: openal not found"; } &&
4878                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4879                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4880 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4881                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4882                                die "ERROR: opencl not found"; } &&
4883                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4884                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4885                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4886 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4887                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4888                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4889                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4890                                die "ERROR: opengl not found."
4891                              }
4892 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4893                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4894                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4895                                die "ERROR: openssl not found"; }
4896 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4897
4898 if enabled gnutls; then
4899     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4900     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4901 fi
4902
4903 # libdc1394 check
4904 if enabled libdc1394; then
4905     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4906         enable libdc1394_2; } ||
4907     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4908         enable libdc1394_1; } ||
4909     die "ERROR: No version of libdc1394 found "
4910 fi
4911
4912 SDL_CONFIG="${cross_prefix}sdl-config"
4913 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4914     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4915     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4916     enable sdl
4917 else
4918   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4919     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4920     sdl_libs=$("${SDL_CONFIG}" --libs)
4921     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4922     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4923     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4924     enable sdl
4925   fi
4926 fi
4927 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4928
4929 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4930 enabled makeinfo && (makeinfo --version | \
4931                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
4932     && enable makeinfo_html || disable makeinfo_html
4933 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4934 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4935 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4936 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4937
4938 check_header linux/fb.h
4939 check_header linux/videodev.h
4940 check_header linux/videodev2.h
4941 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4942
4943 check_header sys/videoio.h
4944
4945 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4946 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4947 # w32api 3.12 had it defined wrong
4948 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4949
4950 check_type "dshow.h" IBaseFilter
4951
4952 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4953 { check_header dev/bktr/ioctl_meteor.h &&
4954   check_header dev/bktr/ioctl_bt848.h; } ||
4955 { check_header machine/ioctl_meteor.h &&
4956   check_header machine/ioctl_bt848.h; } ||
4957 { check_header dev/video/meteor/ioctl_meteor.h &&
4958   check_header dev/video/bktr/ioctl_bt848.h; } ||
4959 check_header dev/ic/bt8xx.h
4960
4961 check_header sndio.h
4962 if check_struct sys/soundcard.h audio_buf_info bytes; then
4963     enable_safe sys/soundcard.h
4964 else
4965     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4966     #include <sys/soundcard.h>
4967     audio_buf_info abc;
4968 EOF
4969 fi
4970 check_header soundcard.h
4971
4972 enabled_any alsa_indev alsa_outdev &&
4973     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4974
4975 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4976     check_func jack_port_get_latency_range -ljack
4977
4978 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4979
4980 if enabled libcdio; then
4981     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4982     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4983     die "ERROR: libcdio-paranoia not found"
4984 fi
4985
4986 enabled xlib &&
4987     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4988
4989 enabled x11grab                                           &&
4990 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4991 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4992 { enabled xlib || die "ERROR: Xlib not found"; }
4993
4994 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4995
4996 enabled dxva2api_h &&
4997     check_cc <<EOF && enable dxva2api_cobj
4998 #define _WIN32_WINNT 0x0600
4999 #define COBJMACROS
5000 #include <windows.h>
5001 #include <d3d9.h>
5002 #include <dxva2api.h>
5003 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5004 EOF
5005
5006 enabled vaapi &&
5007     check_lib va/va.h vaInitialize -lva ||
5008     disable vaapi
5009
5010 enabled vdpau &&
5011     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5012     disable vdpau
5013
5014 enabled vdpau && enabled xlib &&
5015     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5016     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5017     enable vdpau_x11
5018
5019 # Funny iconv installations are not unusual, so check it after all flags have been set
5020 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5021
5022 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5023
5024 # add some useful compiler flags if supported
5025 check_cflags -Wdeclaration-after-statement
5026 check_cflags -Wall
5027 check_cflags -Wdisabled-optimization
5028 check_cflags -Wpointer-arith
5029 check_cflags -Wredundant-decls
5030 check_cflags -Wwrite-strings
5031 check_cflags -Wtype-limits
5032 check_cflags -Wundef
5033 check_cflags -Wmissing-prototypes
5034 check_cflags -Wno-pointer-to-int-cast
5035 check_cflags -Wstrict-prototypes
5036 check_cflags -Wempty-body
5037 enabled extra_warnings && check_cflags -Winline
5038
5039 check_disable_warning(){
5040     warning_flag=-W${1#-Wno-}
5041     test_cflags $warning_flag && add_cflags $1
5042 }
5043
5044 check_disable_warning -Wno-parentheses
5045 check_disable_warning -Wno-switch
5046 check_disable_warning -Wno-format-zero-length
5047 check_disable_warning -Wno-pointer-sign
5048
5049 # add some linker flags
5050 check_ldflags -Wl,--warn-common
5051 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5052 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5053 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5054
5055 # add some strip flags
5056 # -wN '..@*' is more selective than -x, but not available everywhere.
5057 check_stripflags -wN \'..@*\' || check_stripflags -x
5058
5059 enabled neon_clobber_test &&
5060     check_ldflags -Wl,--wrap,avcodec_open2              \
5061                   -Wl,--wrap,avcodec_decode_audio4      \
5062                   -Wl,--wrap,avcodec_decode_video2      \
5063                   -Wl,--wrap,avcodec_decode_subtitle2   \
5064                   -Wl,--wrap,avcodec_encode_audio2      \
5065                   -Wl,--wrap,avcodec_encode_video2      \
5066                   -Wl,--wrap,avcodec_encode_subtitle    \
5067                   -Wl,--wrap,swr_convert                \
5068                   -Wl,--wrap,avresample_convert ||
5069     disable neon_clobber_test
5070
5071 enabled xmm_clobber_test &&
5072     check_ldflags -Wl,--wrap,avcodec_open2              \
5073                   -Wl,--wrap,avcodec_decode_audio4      \
5074                   -Wl,--wrap,avcodec_decode_video2      \
5075                   -Wl,--wrap,avcodec_decode_subtitle2   \
5076                   -Wl,--wrap,avcodec_encode_audio2      \
5077                   -Wl,--wrap,avcodec_encode_video       \
5078                   -Wl,--wrap,avcodec_encode_video2      \
5079                   -Wl,--wrap,avcodec_encode_subtitle    \
5080                   -Wl,--wrap,swr_convert                \
5081                   -Wl,--wrap,avresample_convert         \
5082                   -Wl,--wrap,sws_scale ||
5083     disable xmm_clobber_test
5084
5085 echo "X{};" > $TMPV
5086 if test_ldflags -Wl,--version-script,$TMPV; then
5087     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5088     check_cc <<EOF && enable symver_asm_label
5089 void ff_foo(void) __asm__ ("av_foo@VERSION");
5090 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5091 EOF
5092     check_cc <<EOF && enable symver_gnu_asm
5093 __asm__(".symver ff_foo,av_foo@VERSION");
5094 void ff_foo(void) {}
5095 EOF
5096 fi
5097
5098 if [ -z "$optflags" ]; then
5099     if enabled small; then
5100         optflags=$cflags_size
5101     elif enabled optimizations; then
5102         optflags=$cflags_speed
5103     else
5104         optflags=$cflags_noopt
5105     fi
5106 fi
5107
5108 check_optflags(){
5109     check_cflags "$@"
5110     enabled lto && check_ldflags "$@"
5111 }
5112
5113
5114 if enabled lto; then
5115     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5116     check_cflags  -flto
5117     check_ldflags -flto $cpuflags
5118     disable inline_asm_direct_symbol_refs
5119 fi
5120
5121 check_optflags $optflags
5122 check_optflags -fno-math-errno
5123 check_optflags -fno-signed-zeros
5124
5125 enabled ftrapv && check_cflags -ftrapv
5126
5127 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5128 int x;
5129 EOF
5130
5131
5132 if enabled icc; then
5133     # Just warnings, no remarks
5134     check_cflags -w1
5135     # -wd: Disable following warnings
5136     # 144, 167, 556: -Wno-pointer-sign
5137     # 188: enumerated type mixed with another type
5138     # 1292: attribute "foo" ignored
5139     # 1419: external declaration in primary source file
5140     # 10006: ignoring unknown option -fno-signed-zeros
5141     # 10148: ignoring unknown option -Wno-parentheses
5142     # 10156: ignoring option '-W'; no argument required
5143     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5144     # 11030: Warning unknown option --as-needed
5145     # 10156: ignoring option '-export'; no argument required
5146     check_ldflags -wd10156,11030
5147     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5148     enable ebp_available
5149     # The test above does not test linking
5150     enabled lto && disable symver_asm_label
5151     if enabled x86_32; then
5152         icc_version=$($cc -dumpversion)
5153         test ${icc_version%%.*} -ge 11 &&
5154             check_cflags -falign-stack=maintain-16-byte ||
5155             disable aligned_stack
5156     fi
5157 elif enabled ccc; then
5158     # disable some annoying warnings
5159     add_cflags -msg_disable bitnotint
5160     add_cflags -msg_disable mixfuncvoid
5161     add_cflags -msg_disable nonstandcast
5162     add_cflags -msg_disable unsupieee
5163 elif enabled gcc; then
5164     check_optflags -fno-tree-vectorize
5165     check_cflags -Werror=format-security
5166     check_cflags -Werror=implicit-function-declaration
5167     check_cflags -Werror=missing-prototypes
5168     check_cflags -Werror=return-type
5169     check_cflags -Werror=vla
5170     check_cflags -Wformat
5171     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5172 elif enabled llvm_gcc; then
5173     check_cflags -mllvm -stack-alignment=16
5174 elif enabled clang; then
5175     check_cflags -mllvm -stack-alignment=16
5176     check_cflags -Qunused-arguments
5177     check_cflags -Werror=implicit-function-declaration
5178     check_cflags -Werror=missing-prototypes
5179     check_cflags -Werror=return-type
5180 elif enabled cparser; then
5181     add_cflags -Wno-missing-variable-declarations
5182     add_cflags -Wno-empty-statement
5183 elif enabled armcc; then
5184     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5185     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5186     # 2523: use of inline assembly is deprecated
5187     add_cflags -W${armcc_opt},--diag_suppress=2523
5188     add_cflags -W${armcc_opt},--diag_suppress=1207
5189     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5190     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5191     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5192     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5193 elif enabled tms470; then
5194     add_cflags -pds=824 -pds=837
5195     disable inline_asm
5196 elif enabled pathscale; then
5197     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5198 elif enabled_any msvc icl; then
5199     enabled x86_32 && disable aligned_stack
5200     enabled_all x86_32 debug && add_cflags -Oy-
5201     enabled debug && add_ldflags -debug
5202     enable pragma_deprecated
5203     if enabled icl; then
5204         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5205         # (correctly) on icl 13.x.
5206         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5207             add_cflags -Qansi-alias
5208         # Some inline asm is not compilable in debug
5209         if enabled debug; then
5210             disable ebp_available
5211             disable ebx_available
5212         fi
5213     fi
5214     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5215     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5216 fi
5217
5218 case $as_type in
5219     clang)
5220         add_asflags -Qunused-arguments
5221     ;;
5222 esac
5223
5224 case $ld_type in
5225     clang)
5226         check_ldflags -Qunused-arguments
5227     ;;
5228 esac
5229
5230 case $target_os in
5231     osf1)
5232         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5233     ;;
5234     plan9)
5235         add_cppflags -Dmain=plan9_main
5236     ;;
5237 esac
5238
5239 enable frame_thread_encoder
5240
5241 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5242
5243 check_deps $CONFIG_LIST       \
5244            $CONFIG_EXTRA      \
5245            $HAVE_LIST         \
5246            $ALL_COMPONENTS    \
5247
5248 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"
5249
5250
5251 if test $target_os = "haiku"; then
5252     disable memalign
5253     disable posix_memalign
5254 fi
5255
5256 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5257     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5258     enable dxva2_lib
5259
5260 ! enabled_any memalign posix_memalign aligned_malloc &&
5261     enabled simd_align_16 && enable memalign_hack
5262
5263 # add_dep lib dep
5264 # -> enable ${lib}_deps_${dep}
5265 # -> add $dep to ${lib}_deps only once
5266 add_dep() {
5267     lib=$1
5268     dep=$2
5269     enabled "${lib}_deps_${dep}" && return 0
5270     enable  "${lib}_deps_${dep}"
5271     prepend "${lib}_deps" $dep
5272 }
5273
5274 # merge deps lib components
5275 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5276 merge_deps() {
5277     lib=$1
5278     shift
5279     for comp in $*; do
5280         enabled $comp || continue
5281         eval "dep=\"\$${comp}_deps\""
5282         for d in $dep; do
5283             add_dep $lib $d
5284         done
5285     done
5286 }
5287
5288 merge_deps libavfilter $FILTER_LIST
5289
5290 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5291
5292 for thread in $THREADS_LIST; do
5293     if enabled $thread; then
5294         test -n "$thread_type" &&
5295             die "ERROR: Only one thread type must be selected." ||
5296             thread_type="$thread"
5297     fi
5298 done
5299
5300 enabled zlib && add_cppflags -DZLIB_CONST
5301
5302 # conditional library dependencies, in linking order
5303 enabled aconvert_filter     && prepend avfilter_deps "swresample"
5304 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5305 enabled aresample_filter    && prepend avfilter_deps "swresample"
5306 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5307 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5308 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5309 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5310 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5311 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5312 enabled mp_filter           && prepend avfilter_deps "avcodec"
5313 enabled pan_filter          && prepend avfilter_deps "swresample"
5314 enabled pp_filter           && prepend avfilter_deps "postproc"
5315 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5316 enabled resample_filter && prepend avfilter_deps "avresample"
5317 enabled sab_filter          && prepend avfilter_deps "swscale"
5318 enabled scale_filter    && prepend avfilter_deps "swscale"
5319 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5320 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5321 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5322
5323 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5324
5325 enabled opus_decoder    && prepend avcodec_deps "swresample"
5326
5327 expand_deps(){
5328     lib_deps=${1}_deps
5329     eval "deps=\$$lib_deps"
5330     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5331     unique $lib_deps
5332 }
5333
5334 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5335 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5336
5337 map 'expand_deps $v' $LIBRARY_LIST
5338
5339 echo "install prefix            $prefix"
5340 echo "source path               $source_path"
5341 echo "C compiler                $cc"
5342 echo "C library                 $libc_type"
5343 if test "$host_cc" != "$cc"; then
5344     echo "host C compiler           $host_cc"
5345     echo "host C library            $host_libc_type"
5346 fi
5347 echo "ARCH                      $arch ($cpu)"
5348 if test "$build_suffix" != ""; then
5349     echo "build suffix              $build_suffix"
5350 fi
5351 if test "$progs_suffix" != ""; then
5352     echo "progs suffix              $progs_suffix"
5353 fi
5354 if test "$extra_version" != ""; then
5355     echo "version string suffix     $extra_version"
5356 fi
5357 echo "big-endian                ${bigendian-no}"
5358 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5359 if enabled x86; then
5360     echo "${yasmexe}                      ${yasm-no}"
5361     echo "MMX enabled               ${mmx-no}"
5362     echo "MMXEXT enabled            ${mmxext-no}"
5363     echo "3DNow! enabled            ${amd3dnow-no}"
5364     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5365     echo "SSE enabled               ${sse-no}"
5366     echo "SSSE3 enabled             ${ssse3-no}"
5367     echo "AVX enabled               ${avx-no}"
5368     echo "XOP enabled               ${xop-no}"
5369     echo "FMA3 enabled              ${fma3-no}"
5370     echo "FMA4 enabled              ${fma4-no}"
5371     echo "i686 features enabled     ${i686-no}"
5372     echo "CMOV is fast              ${fast_cmov-no}"
5373     echo "EBX available             ${ebx_available-no}"
5374     echo "EBP available             ${ebp_available-no}"
5375 fi
5376 if enabled aarch64; then
5377     echo "NEON enabled              ${neon-no}"
5378     echo "VFP enabled               ${vfp-no}"
5379 fi
5380 if enabled arm; then
5381     echo "ARMv5TE enabled           ${armv5te-no}"
5382     echo "ARMv6 enabled             ${armv6-no}"
5383     echo "ARMv6T2 enabled           ${armv6t2-no}"
5384     echo "VFP enabled               ${vfp-no}"
5385     echo "NEON enabled              ${neon-no}"
5386     echo "THUMB enabled             ${thumb-no}"
5387 fi
5388 if enabled mips; then
5389     echo "MIPS FPU enabled          ${mipsfpu-no}"
5390     echo "MIPS32R2 enabled          ${mips32r2-no}"
5391     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5392     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5393 fi
5394 if enabled ppc; then
5395     echo "AltiVec enabled           ${altivec-no}"
5396     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5397     echo "PPC VSX optimizations     ${vsx-no}"
5398     echo "dcbzl available           ${dcbzl-no}"
5399 fi
5400 echo "debug symbols             ${debug-no}"
5401 echo "strip symbols             ${stripping-no}"
5402 echo "optimize for size         ${small-no}"
5403 echo "optimizations             ${optimizations-no}"
5404 echo "static                    ${static-no}"
5405 echo "shared                    ${shared-no}"
5406 echo "postprocessing support    ${postproc-no}"
5407 echo "new filter support        ${avfilter-no}"
5408 echo "network support           ${network-no}"
5409 echo "threading support         ${thread_type-no}"
5410 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5411 echo "SDL support               ${sdl-no}"
5412 echo "opencl enabled            ${opencl-no}"
5413 echo "texi2html enabled         ${texi2html-no}"
5414 echo "perl enabled              ${perl-no}"
5415 echo "pod2man enabled           ${pod2man-no}"
5416 echo "makeinfo enabled          ${makeinfo-no}"
5417 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5418 test -n "$random_seed" &&
5419     echo "random seed               ${random_seed}"
5420 echo
5421
5422 echo "External libraries:"
5423 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5424 echo
5425
5426 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5427     echo "Enabled ${type}s:"
5428     eval list=\$$(toupper $type)_LIST
5429     print_enabled '_*' $list | print_3_columns
5430     echo
5431 done
5432
5433 license="LGPL version 2.1 or later"
5434 if enabled nonfree; then
5435     license="nonfree and unredistributable"
5436 elif enabled gplv3; then
5437     license="GPL version 3 or later"
5438 elif enabled lgplv3; then
5439     license="LGPL version 3 or later"
5440 elif enabled gpl; then
5441     license="GPL version 2 or later"
5442 fi
5443
5444 echo "License: $license"
5445
5446 echo "Creating config.mak, config.h, and doc/config.texi..."
5447
5448 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5449
5450 enabled stripping || strip="echo skipping strip"
5451
5452 config_files="$TMPH config.mak doc/config.texi"
5453
5454 cat > config.mak <<EOF
5455 # Automatically generated by configure - do not modify!
5456 ifndef FFMPEG_CONFIG_MAK
5457 FFMPEG_CONFIG_MAK=1
5458 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5459 prefix=$prefix
5460 LIBDIR=\$(DESTDIR)$libdir
5461 SHLIBDIR=\$(DESTDIR)$shlibdir
5462 INCDIR=\$(DESTDIR)$incdir
5463 BINDIR=\$(DESTDIR)$bindir
5464 DATADIR=\$(DESTDIR)$datadir
5465 DOCDIR=\$(DESTDIR)$docdir
5466 MANDIR=\$(DESTDIR)$mandir
5467 SRC_PATH=$source_path
5468 ifndef MAIN_MAKEFILE
5469 SRC_PATH:=\$(SRC_PATH:.%=..%)
5470 endif
5471 CC_IDENT=$cc_ident
5472 ARCH=$arch
5473 INTRINSICS=$intrinsics
5474 CC=$cc
5475 CXX=$cxx
5476 AS=$as
5477 LD=$ld
5478 DEPCC=$dep_cc
5479 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5480 DEPAS=$as
5481 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5482 YASM=$yasmexe
5483 DEPYASM=$yasmexe
5484 AR=$ar
5485 ARFLAGS=$arflags
5486 AR_O=$ar_o
5487 RANLIB=$ranlib
5488 STRIP=$strip
5489 CP=cp -p
5490 LN_S=$ln_s
5491 CPPFLAGS=$CPPFLAGS
5492 CFLAGS=$CFLAGS
5493 CXXFLAGS=$CXXFLAGS
5494 ASFLAGS=$ASFLAGS
5495 AS_C=$AS_C
5496 AS_O=$AS_O
5497 CC_C=$CC_C
5498 CC_E=$CC_E
5499 CC_O=$CC_O
5500 CXX_C=$CXX_C
5501 CXX_O=$CXX_O
5502 LD_O=$LD_O
5503 LD_LIB=$LD_LIB
5504 LD_PATH=$LD_PATH
5505 DLLTOOL=$dlltool
5506 WINDRES=$windres
5507 DEPWINDRES=$dep_cc
5508 DOXYGEN=$doxygen
5509 LDFLAGS=$LDFLAGS
5510 LDEXEFLAGS=$LDEXEFLAGS
5511 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5512 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5513 YASMFLAGS=$YASMFLAGS
5514 BUILDSUF=$build_suffix
5515 PROGSSUF=$progs_suffix
5516 FULLNAME=$FULLNAME
5517 LIBPREF=$LIBPREF
5518 LIBSUF=$LIBSUF
5519 LIBNAME=$LIBNAME
5520 SLIBPREF=$SLIBPREF
5521 SLIBSUF=$SLIBSUF
5522 EXESUF=$EXESUF
5523 EXTRA_VERSION=$extra_version
5524 CCDEP=$CCDEP
5525 CXXDEP=$CXXDEP
5526 CCDEP_FLAGS=$CCDEP_FLAGS
5527 ASDEP=$ASDEP
5528 ASDEP_FLAGS=$ASDEP_FLAGS
5529 CC_DEPFLAGS=$CC_DEPFLAGS
5530 AS_DEPFLAGS=$AS_DEPFLAGS
5531 HOSTCC=$host_cc
5532 HOSTLD=$host_ld
5533 HOSTCFLAGS=$host_cflags
5534 HOSTCPPFLAGS=$host_cppflags
5535 HOSTEXESUF=$HOSTEXESUF
5536 HOSTLDFLAGS=$host_ldflags
5537 HOSTLIBS=$host_libs
5538 DEPHOSTCC=$host_cc
5539 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5540 HOSTCCDEP=$HOSTCCDEP
5541 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5542 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5543 HOSTCC_C=$HOSTCC_C
5544 HOSTCC_O=$HOSTCC_O
5545 HOSTLD_O=$HOSTLD_O
5546 TARGET_EXEC=$target_exec $target_exec_args
5547 TARGET_PATH=$target_path
5548 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5549 CFLAGS-ffplay=$sdl_cflags
5550 ZLIB=$($ldflags_filter -lz)
5551 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5552 EXTRALIBS=$extralibs
5553 COMPAT_OBJS=$compat_objs
5554 EXEOBJS=$exeobjs
5555 INSTALL=$install
5556 LIBTARGET=${LIBTARGET}
5557 SLIBNAME=${SLIBNAME}
5558 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5559 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5560 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5561 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5562 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5563 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5564 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5565 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5566 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5567 NOREDZONE_FLAGS=$noredzone_flags
5568 EOF
5569
5570 get_version(){
5571     lcname=lib${1}
5572     name=$(toupper $lcname)
5573     file=$source_path/$lcname/version.h
5574     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5575     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5576     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5577     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5578     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5579     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5580 }
5581
5582 map 'get_version $v' $LIBRARY_LIST
5583
5584 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5585
5586 print_program_libs(){
5587     eval "program_libs=\$${1}_libs"
5588     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5589 }
5590
5591 map 'print_program_libs $v' $PROGRAM_LIST
5592
5593 cat > $TMPH <<EOF
5594 /* Automatically generated by configure - do not modify! */
5595 #ifndef FFMPEG_CONFIG_H
5596 #define FFMPEG_CONFIG_H
5597 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5598 #define FFMPEG_LICENSE "$(c_escape $license)"
5599 #define CONFIG_THIS_YEAR 2014
5600 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5601 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5602 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5603 #define av_restrict $_restrict
5604 #define EXTERN_PREFIX "${extern_prefix}"
5605 #define EXTERN_ASM ${extern_prefix}
5606 #define BUILDSUF "$build_suffix"
5607 #define SLIBSUF "$SLIBSUF"
5608 #define HAVE_MMX2 HAVE_MMXEXT
5609 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5610 EOF
5611
5612 test -n "$assert_level" &&
5613     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5614
5615 test -n "$malloc_prefix" &&
5616     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5617
5618 if enabled yasm; then
5619     append config_files $TMPASM
5620     printf '' >$TMPASM
5621 fi
5622
5623 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5624
5625
5626 mkdir -p doc
5627 echo "@c auto-generated by configure" > doc/config.texi
5628
5629 print_config ARCH_   "$config_files" $ARCH_LIST
5630 print_config HAVE_   "$config_files" $HAVE_LIST
5631 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5632                                      $CONFIG_EXTRA      \
5633                                      $ALL_COMPONENTS    \
5634
5635 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5636 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5637
5638 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5639 cp_if_changed $TMPH config.h
5640 touch .config
5641
5642 enabled yasm && cp_if_changed $TMPASM config.asm
5643
5644 cat > $TMPH <<EOF
5645 /* Generated by ffconf */
5646 #ifndef AVUTIL_AVCONFIG_H
5647 #define AVUTIL_AVCONFIG_H
5648 EOF
5649
5650 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5651
5652 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5653
5654 cp_if_changed $TMPH libavutil/avconfig.h
5655
5656 if test -n "$WARNINGS"; then
5657     printf "\n$WARNINGS"
5658     enabled fatal_warnings && exit 1
5659 fi
5660
5661 # build pkg-config files
5662
5663 lib_version(){
5664     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5665 }
5666
5667 pkgconfig_generate(){
5668     name=$1
5669     shortname=${name#lib}${build_suffix}
5670     comment=$2
5671     version=$3
5672     libs=$4
5673     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5674     requires=${requires%, }
5675     enabled ${name#lib} || return 0
5676     mkdir -p $name
5677     cat <<EOF > $name/$name${build_suffix}.pc
5678 prefix=$prefix
5679 exec_prefix=\${prefix}
5680 libdir=$libdir
5681 includedir=$incdir
5682
5683 Name: $name
5684 Description: $comment
5685 Version: $version
5686 Requires: $(enabled shared || echo $requires)
5687 Requires.private: $(enabled shared && echo $requires)
5688 Conflicts:
5689 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5690 Libs.private: $(enabled shared && echo $libs)
5691 Cflags: -I\${includedir}
5692 EOF
5693
5694 mkdir -p doc/examples/pc-uninstalled
5695 includedir=${source_path}
5696 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5697     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5698 prefix=
5699 exec_prefix=
5700 libdir=\${pcfiledir}/../../../$name
5701 includedir=${includedir}
5702
5703 Name: $name
5704 Description: $comment
5705 Version: $version
5706 Requires: $requires
5707 Conflicts:
5708 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5709 Cflags: -I\${includedir}
5710 EOF
5711 }
5712
5713 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5714 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5715 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5716 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5717 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5718 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5719 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
5720 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5721 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"