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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [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, useful for drawtext filter [no]
 198   --enable-frei0r          enable frei0r video filtering [no]
 199   --enable-gnutls          enable gnutls, needed for https support
 200                            if openssl is not used [no]
 201   --disable-iconv          disable iconv [autodetect]
 202   --enable-ladspa          enable LADSPA audio filtering [no]
 203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 204   --enable-libass          enable libass subtitles rendering,
 205                            needed for subtitles and ass filter [no]
 206   --enable-libbluray       enable BluRay reading using libbluray [no]
 207   --enable-libbs2b         enable bs2b DSP library [no]
 208   --enable-libcaca         enable textual display using libcaca [no]
 209   --enable-libcelt         enable CELT decoding via libcelt [no]
 210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 212                            and libraw1394 [no]
 213   --enable-libfaac         enable AAC encoding via libfaac [no]
 214   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 215   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 216   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 217   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 218   --enable-libgme          enable Game Music Emu via libgme [no]
 219   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 220   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 221   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 222   --enable-libmodplug      enable ModPlug via libmodplug [no]
 223   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 224   --enable-libnut          enable NUT (de)muxing via libnut,
 225                            native (de)muxer exists [no]
 226   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 227   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 228   --enable-libopencv       enable video filtering via libopencv [no]
 229   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 230   --enable-libopus         enable Opus de/encoding via libopus [no]
 231   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 232   --enable-libquvi         enable quvi input via libquvi [no]
 233   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 234   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 235   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 236   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 237   --enable-libsoxr         enable Include libsoxr resampling [no]
 238   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 239   --enable-libssh          enable SFTP protocol via libssh [no]
 240   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 241   --enable-libtheora       enable Theora encoding via libtheora [no]
 242   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 243   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 244   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 245   --enable-libvidstab      enable video stabilization using vid.stab [no]
 246   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 247   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 248   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 249                            native implementation exists [no]
 250   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 251   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 252   --enable-libwebp         enable WebP encoding via libwebp [no]
 253   --enable-libx264         enable H.264 encoding via x264 [no]
 254   --enable-libx265         enable HEVC encoding via x265 [no]
 255   --enable-libxavs         enable AVS encoding via xavs [no]
 256   --enable-libxcb          enable X11 grabbing using XCB [auto]
 257   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
 258   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
 259   --enable-libxcb-shape    enable X11 grabbing shape rendering [auto]
 260   --enable-libxvid         enable Xvid encoding via xvidcore,
 261                            native MPEG-4/Xvid encoder exists [no]
 262   --enable-libzmq          enable message passing via libzmq [no]
 263   --enable-libzvbi         enable teletext support via libzvbi [no]
 264   --disable-lzma           disable lzma [autodetect]
 265   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 266   --enable-openal          enable OpenAL 1.1 capture support [no]
 267   --enable-opencl          enable OpenCL code
 268   --enable-opengl          enable OpenGL rendering [no]
 269   --enable-openssl         enable openssl, needed for https support
 270                            if gnutls is not used [no]
 271   --disable-sdl            disable sdl [autodetect]
 272   --enable-x11grab         enable X11 grabbing (legacy) [no]
 273   --disable-xlib           disable xlib [autodetect]
 274   --disable-zlib           disable zlib [autodetect]
 275
 276 Toolchain options:
 277   --arch=ARCH              select architecture [$arch]
 278   --cpu=CPU                select the minimum required CPU (affects
 279                            instruction selection, may crash on older CPUs)
 280   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 281   --progs-suffix=SUFFIX    program name suffix []
 282   --enable-cross-compile   assume a cross-compiler is used
 283   --sysroot=PATH           root of cross-build tree
 284   --sysinclude=PATH        location of cross-build system headers
 285   --target-os=OS           compiler targets OS [$target_os]
 286   --target-exec=CMD        command to run executables on target
 287   --target-path=DIR        path to view of build directory on target
 288   --target-samples=DIR     path to samples directory on target
 289   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 290   --toolchain=NAME         set tool defaults according to NAME
 291   --nm=NM                  use nm tool NM [$nm_default]
 292   --ar=AR                  use archive tool AR [$ar_default]
 293   --as=AS                  use assembler AS [$as_default]
 294   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 295   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 296   --cc=CC                  use C compiler CC [$cc_default]
 297   --cxx=CXX                use C compiler CXX [$cxx_default]
 298   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 299   --ld=LD                  use linker LD [$ld_default]
 300   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 301   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 302   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 303   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 304   --host-cc=HOSTCC         use host C compiler HOSTCC
 305   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 306   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 307   --host-ld=HOSTLD         use host linker HOSTLD
 308   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 309   --host-libs=HLIBS        use libs HLIBS when linking for host
 310   --host-os=OS             compiler host OS [$target_os]
 311   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 312   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 313   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 314   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 315   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 316   --extra-version=STRING   version string suffix []
 317   --optflags=OPTFLAGS      override optimization-related compiler flags
 318   --build-suffix=SUFFIX    library name suffix []
 319   --enable-pic             build position-independent code
 320   --enable-thumb           compile for Thumb instruction set
 321   --enable-lto             use link-time optimization
 322
 323 Advanced options (experts only):
 324   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 325   --disable-symver         disable symbol versioning
 326   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 327   --disable-safe-bitstream-reader
 328                            disable buffer boundary checking in bitreaders
 329                            (faster, but may crash)
 330   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 331   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 332
 333 Optimization options (experts only):
 334   --disable-asm            disable all assembly optimizations
 335   --disable-altivec        disable AltiVec optimizations
 336   --disable-amd3dnow       disable 3DNow! optimizations
 337   --disable-amd3dnowext    disable 3DNow! extended optimizations
 338   --disable-mmx            disable MMX optimizations
 339   --disable-mmxext         disable MMXEXT optimizations
 340   --disable-sse            disable SSE optimizations
 341   --disable-sse2           disable SSE2 optimizations
 342   --disable-sse3           disable SSE3 optimizations
 343   --disable-ssse3          disable SSSE3 optimizations
 344   --disable-sse4           disable SSE4 optimizations
 345   --disable-sse42          disable SSE4.2 optimizations
 346   --disable-avx            disable AVX optimizations
 347   --disable-xop            disable XOP optimizations
 348   --disable-fma3           disable FMA3 optimizations
 349   --disable-fma4           disable FMA4 optimizations
 350   --disable-avx2           disable AVX2 optimizations
 351   --disable-armv5te        disable armv5te optimizations
 352   --disable-armv6          disable armv6 optimizations
 353   --disable-armv6t2        disable armv6t2 optimizations
 354   --disable-vfp            disable VFP optimizations
 355   --disable-neon           disable NEON optimizations
 356   --disable-inline-asm     disable use of inline assembly
 357   --disable-yasm           disable use of nasm/yasm assembly
 358   --disable-mips32r2       disable MIPS32R2 optimizations
 359   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 360   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 361   --disable-mipsfpu        disable floating point MIPS optimizations
 362   --disable-fast-unaligned consider unaligned accesses slow
 363
 364 Developer options (useful when working on FFmpeg itself):
 365   --disable-debug          disable debugging symbols
 366   --enable-debug=LEVEL     set the debug level [$debuglevel]
 367   --disable-optimizations  disable compiler optimizations
 368   --enable-extra-warnings  enable more compiler warnings
 369   --disable-stripping      disable stripping of executables and shared libraries
 370   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 371                            2 causes a slowdown at runtime.
 372   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 373   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 374                            leaks and errors, using the specified valgrind binary.
 375                            Cannot be combined with --target-exec
 376   --enable-ftrapv          Trap arithmetic overflows
 377   --samples=PATH           location of test samples for FATE, if not set use
 378                            \$FATE_SAMPLES at make invocation time.
 379   --enable-neon-clobber-test check NEON registers for clobbering (should be
 380                            used only for debugging purposes)
 381   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 382                            should be used only for debugging purposes)
 383   --enable-random          randomly enable/disable components
 384   --disable-random
 385   --enable-random=LIST     randomly enable/disable specific components or
 386   --disable-random=LIST    component groups. LIST is a comma-separated list
 387                            of NAME[:PROB] entries where NAME is a component
 388                            (group) and PROB the probability associated with
 389                            NAME (default 0.5).
 390   --random-seed=VALUE      seed value for --enable/disable-random
 391
 392 NOTE: Object files are built at the place where configure is launched.
 393 EOF
 394   exit 0
 395 }
 396
 397 quotes='""'
 398
 399 log(){
 400     echo "$@" >> $logfile
 401 }
 402
 403 log_file(){
 404     log BEGIN $1
 405     pr -n -t $1 >> $logfile
 406     log END $1
 407 }
 408
 409 echolog(){
 410     log "$@"
 411     echo "$@"
 412 }
 413
 414 warn(){
 415     log "WARNING: $*"
 416     WARNINGS="${WARNINGS}WARNING: $*\n"
 417 }
 418
 419 die(){
 420     echolog "$@"
 421     cat <<EOF
 422
 423 If you think configure made a mistake, make sure you are using the latest
 424 version from Git.  If the latest version fails, report the problem to the
 425 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 426 EOF
 427     if disabled logging; then
 428         cat <<EOF
 429 Rerun configure with logging enabled (do not use --disable-logging), and
 430 include the log this produces with your report.
 431 EOF
 432     else
 433         cat <<EOF
 434 Include the log file "$logfile" produced by configure as this will help
 435 solve the problem.
 436 EOF
 437     fi
 438     exit 1
 439 }
 440
 441 # Avoid locale weirdness, besides we really just want to translate ASCII.
 442 toupper(){
 443     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 444 }
 445
 446 tolower(){
 447     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 448 }
 449
 450 c_escape(){
 451     echo "$*" | sed 's/["\\]/\\\0/g'
 452 }
 453
 454 sh_quote(){
 455     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 456     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 457     echo "$v"
 458 }
 459
 460 cleanws(){
 461     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 462 }
 463
 464 filter(){
 465     pat=$1
 466     shift
 467     for v; do
 468         eval "case $v in $pat) echo $v ;; esac"
 469     done
 470 }
 471
 472 filter_out(){
 473     pat=$1
 474     shift
 475     for v; do
 476         eval "case $v in $pat) ;; *) echo $v ;; esac"
 477     done
 478 }
 479
 480 map(){
 481     m=$1
 482     shift
 483     for v; do eval $m; done
 484 }
 485
 486 add_suffix(){
 487     suffix=$1
 488     shift
 489     for v; do echo ${v}${suffix}; done
 490 }
 491
 492 set_all(){
 493     value=$1
 494     shift
 495     for var in $*; do
 496         eval $var=$value
 497     done
 498 }
 499
 500 set_weak(){
 501     value=$1
 502     shift
 503     for var; do
 504         eval : \${$var:=$value}
 505     done
 506 }
 507
 508 sanitize_var_name(){
 509     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 510 }
 511
 512 set_safe(){
 513     var=$1
 514     shift
 515     eval $(sanitize_var_name "$var")='$*'
 516 }
 517
 518 get_safe(){
 519     eval echo \$$(sanitize_var_name "$1")
 520 }
 521
 522 pushvar(){
 523     for pvar in $*; do
 524         eval level=\${${pvar}_level:=0}
 525         eval ${pvar}_${level}="\$$pvar"
 526         eval ${pvar}_level=$(($level+1))
 527     done
 528 }
 529
 530 popvar(){
 531     for pvar in $*; do
 532         eval level=\${${pvar}_level:-0}
 533         test $level = 0 && continue
 534         eval level=$(($level-1))
 535         eval $pvar="\${${pvar}_${level}}"
 536         eval ${pvar}_level=$level
 537         eval unset ${pvar}_${level}
 538     done
 539 }
 540
 541 enable(){
 542     set_all yes $*
 543 }
 544
 545 disable(){
 546     set_all no $*
 547 }
 548
 549 enable_weak(){
 550     set_weak yes $*
 551 }
 552
 553 disable_weak(){
 554     set_weak no $*
 555 }
 556
 557 enable_safe(){
 558     for var; do
 559         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 560     done
 561 }
 562
 563 disable_safe(){
 564     for var; do
 565         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 566     done
 567 }
 568
 569 do_enable_deep(){
 570     for var; do
 571         enabled $var && continue
 572         eval sel="\$${var}_select"
 573         eval sgs="\$${var}_suggest"
 574         pushvar var sgs
 575         enable_deep $sel
 576         popvar sgs
 577         enable_deep_weak $sgs
 578         popvar var
 579     done
 580 }
 581
 582 enable_deep(){
 583     do_enable_deep $*
 584     enable $*
 585 }
 586
 587 enable_deep_weak(){
 588     for var; do
 589         disabled $var && continue
 590         pushvar var
 591         do_enable_deep $var
 592         popvar var
 593         enable_weak $var
 594     done
 595 }
 596
 597 enabled(){
 598     test "${1#!}" = "$1" && op== || op=!=
 599     eval test "x\$${1#!}" $op "xyes"
 600 }
 601
 602 disabled(){
 603     test "${1#!}" = "$1" && op== || op=!=
 604     eval test "x\$${1#!}" $op "xno"
 605 }
 606
 607 enabled_all(){
 608     for opt; do
 609         enabled $opt || return 1
 610     done
 611 }
 612
 613 disabled_all(){
 614     for opt; do
 615         disabled $opt || return 1
 616     done
 617 }
 618
 619 enabled_any(){
 620     for opt; do
 621         enabled $opt && return 0
 622     done
 623 }
 624
 625 disabled_any(){
 626     for opt; do
 627         disabled $opt && return 0
 628     done
 629     return 1
 630 }
 631
 632 set_default(){
 633     for opt; do
 634         eval : \${$opt:=\$${opt}_default}
 635     done
 636 }
 637
 638 is_in(){
 639     value=$1
 640     shift
 641     for var in $*; do
 642         [ $var = $value ] && return 0
 643     done
 644     return 1
 645 }
 646
 647 do_check_deps(){
 648     for cfg; do
 649         cfg="${cfg#!}"
 650         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 651         disabled ${cfg}_checking && continue
 652         enable ${cfg}_checking
 653         append allopts $cfg
 654
 655         eval dep_all="\$${cfg}_deps"
 656         eval dep_any="\$${cfg}_deps_any"
 657         eval dep_sel="\$${cfg}_select"
 658         eval dep_sgs="\$${cfg}_suggest"
 659         eval dep_ifa="\$${cfg}_if"
 660         eval dep_ifn="\$${cfg}_if_any"
 661
 662         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 663         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 664         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 665
 666         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 667         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 668         enabled_all  $dep_all || disable $cfg
 669         enabled_any  $dep_any || disable $cfg
 670         disabled_any $dep_sel && disable $cfg
 671
 672         if enabled $cfg; then
 673             enable_deep $dep_sel
 674             enable_deep_weak $dep_sgs
 675         fi
 676
 677         disable ${cfg}_checking
 678     done
 679 }
 680
 681 check_deps(){
 682     unset allopts
 683
 684     do_check_deps "$@"
 685
 686     for cfg in $allopts; do
 687         enabled $cfg || continue
 688         eval dep_extralibs="\$${cfg}_extralibs"
 689         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 690     done
 691 }
 692
 693 print_config(){
 694     pfx=$1
 695     files=$2
 696     shift 2
 697     map 'eval echo "$v \${$v:-no}"' "$@" |
 698     awk "BEGIN { split(\"$files\", files) }
 699         {
 700             c = \"$pfx\" toupper(\$1);
 701             v = \$2;
 702             sub(/yes/, 1, v);
 703             sub(/no/,  0, v);
 704             for (f in files) {
 705                 file = files[f];
 706                 if (file ~ /\\.h\$/) {
 707                     printf(\"#define %s %d\\n\", c, v) >>file;
 708                 } else if (file ~ /\\.asm\$/) {
 709                     printf(\"%%define %s %d\\n\", c, v) >>file;
 710                 } else if (file ~ /\\.mak\$/) {
 711                     n = -v ? \"\" : \"!\";
 712                     printf(\"%s%s=yes\\n\", n, c) >>file;
 713                 } else if (file ~ /\\.texi\$/) {
 714                     pre = -v ? \"\" : \"@c \";
 715                     yesno = \$2;
 716                     c2 = tolower(c);
 717                     gsub(/_/, \"-\", c2);
 718                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 719                 }
 720             }
 721         }"
 722 }
 723
 724 print_enabled(){
 725     suf=$1
 726     shift
 727     for v; do
 728         enabled $v && printf "%s\n" ${v%$suf};
 729     done
 730 }
 731
 732 append(){
 733     var=$1
 734     shift
 735     eval "$var=\"\$$var $*\""
 736 }
 737
 738 prepend(){
 739     var=$1
 740     shift
 741     eval "$var=\"$* \$$var\""
 742 }
 743
 744 unique(){
 745     var=$1
 746     uniq_list=""
 747     for tok in $(eval echo \$$var); do
 748         uniq_list="$(filter_out $tok $uniq_list) $tok"
 749     done
 750     eval "$var=\"${uniq_list}\""
 751 }
 752
 753 add_cppflags(){
 754     append CPPFLAGS "$@"
 755 }
 756
 757 add_cflags(){
 758     append CFLAGS $($cflags_filter "$@")
 759 }
 760
 761 add_cxxflags(){
 762     append CXXFLAGS $($cflags_filter "$@")
 763 }
 764
 765 add_asflags(){
 766     append ASFLAGS $($asflags_filter "$@")
 767 }
 768
 769 add_ldflags(){
 770     append LDFLAGS $($ldflags_filter "$@")
 771 }
 772
 773 add_ldexeflags(){
 774     append LDEXEFLAGS $($ldflags_filter "$@")
 775 }
 776
 777 add_stripflags(){
 778     append ASMSTRIPFLAGS "$@"
 779 }
 780
 781 add_extralibs(){
 782     prepend extralibs $($ldflags_filter "$@")
 783 }
 784
 785 add_host_cppflags(){
 786     append host_cppflags "$@"
 787 }
 788
 789 add_host_cflags(){
 790     append host_cflags $($host_cflags_filter "$@")
 791 }
 792
 793 add_host_ldflags(){
 794     append host_ldflags $($host_ldflags_filter "$@")
 795 }
 796
 797 add_compat(){
 798     append compat_objs $1
 799     shift
 800     map 'add_cppflags -D$v' "$@"
 801 }
 802
 803 check_cmd(){
 804     log "$@"
 805     "$@" >> $logfile 2>&1
 806 }
 807
 808 check_stat(){
 809     log check_stat "$@"
 810     stat "$1" >> $logfile 2>&1
 811 }
 812
 813 cc_o(){
 814     eval printf '%s\\n' $CC_O
 815 }
 816
 817 cc_e(){
 818     eval printf '%s\\n' $CC_E
 819 }
 820
 821 check_cc(){
 822     log check_cc "$@"
 823     cat > $TMPC
 824     log_file $TMPC
 825     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 826 }
 827
 828 check_cxx(){
 829     log check_cxx "$@"
 830     cat > $TMPCPP
 831     log_file $TMPCPP
 832     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 833 }
 834
 835 check_oc(){
 836     log check_oc "$@"
 837     cat > $TMPM
 838     log_file $TMPM
 839     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 840 }
 841
 842 check_cpp(){
 843     log check_cpp "$@"
 844     cat > $TMPC
 845     log_file $TMPC
 846     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 847 }
 848
 849 as_o(){
 850     eval printf '%s\\n' $AS_O
 851 }
 852
 853 check_as(){
 854     log check_as "$@"
 855     cat > $TMPS
 856     log_file $TMPS
 857     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 858 }
 859
 860 check_inline_asm(){
 861     log check_inline_asm "$@"
 862     name="$1"
 863     code="$2"
 864     shift 2
 865     disable $name
 866     check_cc "$@" <<EOF && enable $name
 867 void foo(void){ __asm__ volatile($code); }
 868 EOF
 869 }
 870
 871 check_insn(){
 872     log check_insn "$@"
 873     check_inline_asm ${1}_inline "\"$2\""
 874     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 875 }
 876
 877 check_yasm(){
 878     log check_yasm "$@"
 879     echo "$1" > $TMPS
 880     log_file $TMPS
 881     shift 1
 882     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 883 }
 884
 885 ld_o(){
 886     eval printf '%s\\n' $LD_O
 887 }
 888
 889 check_ld(){
 890     log check_ld "$@"
 891     type=$1
 892     shift 1
 893     flags=$(filter_out '-l*|*.so' $@)
 894     libs=$(filter '-l*|*.so' $@)
 895     check_$type $($cflags_filter $flags) || return
 896     flags=$($ldflags_filter $flags)
 897     libs=$($ldflags_filter $libs)
 898     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 899 }
 900
 901 print_include(){
 902     hdr=$1
 903     test "${hdr%.h}" = "${hdr}" &&
 904         echo "#include $hdr"    ||
 905         echo "#include <$hdr>"
 906 }
 907
 908 check_code(){
 909     log check_code "$@"
 910     check=$1
 911     headers=$2
 912     code=$3
 913     shift 3
 914     {
 915         for hdr in $headers; do
 916             print_include $hdr
 917         done
 918         echo "int main(void) { $code; return 0; }"
 919     } | check_$check "$@"
 920 }
 921
 922 check_cppflags(){
 923     log check_cppflags "$@"
 924     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 925 int x;
 926 EOF
 927 }
 928
 929 test_cflags(){
 930     log test_cflags "$@"
 931     set -- $($cflags_filter "$@")
 932     check_cc "$@" <<EOF
 933 int x;
 934 EOF
 935 }
 936
 937 check_cflags(){
 938     log check_cflags "$@"
 939     test_cflags "$@" && add_cflags "$@"
 940 }
 941
 942 check_cxxflags(){
 943     log check_cxxflags "$@"
 944     set -- $($cflags_filter "$@")
 945     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 946 int x;
 947 EOF
 948 }
 949
 950 test_ldflags(){
 951     log test_ldflags "$@"
 952     check_ld "cc" "$@" <<EOF
 953 int main(void){ return 0; }
 954 EOF
 955 }
 956
 957 check_ldflags(){
 958     log check_ldflags "$@"
 959     test_ldflags "$@" && add_ldflags "$@"
 960 }
 961
 962 test_stripflags(){
 963     log test_stripflags "$@"
 964     # call check_cc to get a fresh TMPO
 965     check_cc <<EOF
 966 int main(void) { return 0; }
 967 EOF
 968     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 969 }
 970
 971 check_stripflags(){
 972     log check_stripflags "$@"
 973     test_stripflags "$@" && add_stripflags "$@"
 974 }
 975
 976 check_header(){
 977     log check_header "$@"
 978     header=$1
 979     shift
 980     disable_safe $header
 981     check_cpp "$@" <<EOF && enable_safe $header
 982 #include <$header>
 983 int x;
 984 EOF
 985 }
 986
 987 check_header_oc(){
 988     log check_header_oc "$@"
 989     rm -f -- "$TMPO"
 990     header=$1
 991     shift
 992     disable_safe $header
 993     {
 994        echo "#include <$header>"
 995        echo "int main(void) { return 0; }"
 996     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 997 }
 998
 999 check_func(){
1000     log check_func "$@"
1001     func=$1
1002     shift
1003     disable $func
1004     check_ld "cc" "$@" <<EOF && enable $func
1005 extern int $func();
1006 int main(void){ $func(); }
1007 EOF
1008 }
1009
1010 check_mathfunc(){
1011     log check_mathfunc "$@"
1012     func=$1
1013     narg=$2
1014     shift 2
1015     test $narg = 2 && args="f, g" || args="f"
1016     disable $func
1017     check_ld "cc" "$@" <<EOF && enable $func
1018 #include <math.h>
1019 float foo(float f, float g) { return $func($args); }
1020 int main(void){ return (int) foo; }
1021 EOF
1022 }
1023
1024 check_func_headers(){
1025     log check_func_headers "$@"
1026     headers=$1
1027     funcs=$2
1028     shift 2
1029     {
1030         for hdr in $headers; do
1031             print_include $hdr
1032         done
1033         for func in $funcs; do
1034             echo "long check_$func(void) { return (long) $func; }"
1035         done
1036         echo "int main(void) { return 0; }"
1037     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_class_headers_cpp(){
1041     log check_class_headers_cpp "$@"
1042     headers=$1
1043     classes=$2
1044     shift 2
1045     {
1046         for hdr in $headers; do
1047             echo "#include <$hdr>"
1048         done
1049         echo "int main(void) { "
1050         i=1
1051         for class in $classes; do
1052             echo "$class obj$i;"
1053             i=$(expr $i + 1)
1054         done
1055         echo "return 0; }"
1056     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1057 }
1058
1059 check_cpp_condition(){
1060     log check_cpp_condition "$@"
1061     header=$1
1062     condition=$2
1063     shift 2
1064     check_cpp "$@" <<EOF
1065 #include <$header>
1066 #if !($condition)
1067 #error "unsatisfied condition: $condition"
1068 #endif
1069 EOF
1070 }
1071
1072 check_lib(){
1073     log check_lib "$@"
1074     header="$1"
1075     func="$2"
1076     shift 2
1077     check_header $header && check_func $func "$@" && add_extralibs "$@"
1078 }
1079
1080 check_lib2(){
1081     log check_lib2 "$@"
1082     headers="$1"
1083     funcs="$2"
1084     shift 2
1085     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1086 }
1087
1088 check_lib_cpp(){
1089     log check_lib_cpp "$@"
1090     headers="$1"
1091     classes="$2"
1092     shift 2
1093     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1094 }
1095
1096 check_pkg_config(){
1097     log check_pkg_config "$@"
1098     pkgandversion="$1"
1099     pkg="${1%% *}"
1100     headers="$2"
1101     funcs="$3"
1102     shift 3
1103     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1104     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1105     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1106     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1107         set_safe ${pkg}_cflags $pkg_cflags   &&
1108         set_safe ${pkg}_libs   $pkg_libs
1109 }
1110
1111 check_exec(){
1112     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1113 }
1114
1115 check_exec_crash(){
1116     code=$(cat)
1117
1118     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1119     # are safe but may not be available everywhere.  Thus we use
1120     # raise(SIGTERM) instead.  The check is run in a subshell so we
1121     # can redirect the "Terminated" message from the shell.  SIGBUS
1122     # is not defined by standard C so it is used conditionally.
1123
1124     (check_exec "$@") >> $logfile 2>&1 <<EOF
1125 #include <signal.h>
1126 static void sighandler(int sig){
1127     raise(SIGTERM);
1128 }
1129 int foo(void){
1130     $code
1131 }
1132 int (*func_ptr)(void) = foo;
1133 int main(void){
1134     signal(SIGILL, sighandler);
1135     signal(SIGFPE, sighandler);
1136     signal(SIGSEGV, sighandler);
1137 #ifdef SIGBUS
1138     signal(SIGBUS, sighandler);
1139 #endif
1140     return func_ptr();
1141 }
1142 EOF
1143 }
1144
1145 check_type(){
1146     log check_type "$@"
1147     headers=$1
1148     type=$2
1149     shift 2
1150     disable_safe "$type"
1151     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1152 }
1153
1154 check_struct(){
1155     log check_struct "$@"
1156     headers=$1
1157     struct=$2
1158     member=$3
1159     shift 3
1160     disable_safe "${struct}_${member}"
1161     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1162         enable_safe "${struct}_${member}"
1163 }
1164
1165 check_builtin(){
1166     log check_builtin "$@"
1167     name=$1
1168     headers=$2
1169     builtin=$3
1170     shift 3
1171     disable "$name"
1172     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1173 }
1174
1175 check_compile_assert(){
1176     log check_compile_assert "$@"
1177     name=$1
1178     headers=$2
1179     condition=$3
1180     shift 3
1181     disable "$name"
1182     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1183 }
1184
1185 require(){
1186     name="$1"
1187     header="$2"
1188     func="$3"
1189     shift 3
1190     check_lib $header $func "$@" || die "ERROR: $name not found"
1191 }
1192
1193 require2(){
1194     name="$1"
1195     headers="$2"
1196     func="$3"
1197     shift 3
1198     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1199 }
1200
1201 require_cpp(){
1202     name="$1"
1203     headers="$2"
1204     classes="$3"
1205     shift 3
1206     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1207 }
1208
1209 use_pkg_config(){
1210     pkg="$1"
1211     check_pkg_config "$@" || return 1
1212     add_cflags    $(get_safe ${pkg}_cflags)
1213     add_extralibs $(get_safe ${pkg}_libs)
1214 }
1215
1216 require_pkg_config(){
1217     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1218 }
1219
1220 require_libfreetype(){
1221     log require_libfreetype "$@"
1222     pkg="freetype2"
1223     check_cmd $pkg_config --exists --print-errors $pkg \
1224       || die "ERROR: $pkg not found"
1225     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1226     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1227     {
1228         echo "#include <ft2build.h>"
1229         echo "#include FT_FREETYPE_H"
1230         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1231         echo "int main(void) { return 0; }"
1232     } | check_ld "cc" $pkg_cflags $pkg_libs \
1233       && set_safe ${pkg}_cflags $pkg_cflags \
1234       && set_safe ${pkg}_libs   $pkg_libs \
1235       || die "ERROR: $pkg not found"
1236     add_cflags    $(get_safe ${pkg}_cflags)
1237     add_extralibs $(get_safe ${pkg}_libs)
1238 }
1239
1240 hostcc_e(){
1241     eval printf '%s\\n' $HOSTCC_E
1242 }
1243
1244 hostcc_o(){
1245     eval printf '%s\\n' $HOSTCC_O
1246 }
1247
1248 check_host_cc(){
1249     log check_host_cc "$@"
1250     cat > $TMPC
1251     log_file $TMPC
1252     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1253 }
1254
1255 check_host_cpp(){
1256     log check_host_cpp "$@"
1257     cat > $TMPC
1258     log_file $TMPC
1259     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1260 }
1261
1262 check_host_cppflags(){
1263     log check_host_cppflags "$@"
1264     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1265 int x;
1266 EOF
1267 }
1268
1269 check_host_cflags(){
1270     log check_host_cflags "$@"
1271     set -- $($host_cflags_filter "$@")
1272     check_host_cc "$@" <<EOF && append host_cflags "$@"
1273 int x;
1274 EOF
1275 }
1276
1277 check_host_cpp_condition(){
1278     log check_host_cpp_condition "$@"
1279     header=$1
1280     condition=$2
1281     shift 2
1282     check_host_cpp "$@" <<EOF
1283 #include <$header>
1284 #if !($condition)
1285 #error "unsatisfied condition: $condition"
1286 #endif
1287 EOF
1288 }
1289
1290 apply(){
1291     file=$1
1292     shift
1293     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1294 }
1295
1296 cp_if_changed(){
1297     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1298     mkdir -p "$(dirname $2)"
1299     $cp_f "$1" "$2"
1300 }
1301
1302 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1303 # system-dependent things.
1304
1305 COMPONENT_LIST="
1306     bsfs
1307     decoders
1308     demuxers
1309     encoders
1310     filters
1311     hwaccels
1312     indevs
1313     muxers
1314     outdevs
1315     parsers
1316     protocols
1317 "
1318
1319 EXAMPLE_LIST="
1320     avio_reading_example
1321     decoding_encoding_example
1322     demuxing_decoding_example
1323     extract_mvs_example
1324     filter_audio_example
1325     filtering_audio_example
1326     filtering_video_example
1327     metadata_example
1328     muxing_example
1329     remuxing_example
1330     resampling_audio_example
1331     scaling_video_example
1332     transcode_aac_example
1333     transcoding_example
1334 "
1335
1336 EXTERNAL_LIBRARY_LIST="
1337     avisynth
1338     bzlib
1339     crystalhd
1340     decklink
1341     frei0r
1342     gnutls
1343     iconv
1344     ladspa
1345     libaacplus
1346     libass
1347     libbluray
1348     libbs2b
1349     libcaca
1350     libcdio
1351     libcelt
1352     libdc1394
1353     libfaac
1354     libfdk_aac
1355     libflite
1356     libfontconfig
1357     libfreetype
1358     libfribidi
1359     libgme
1360     libgsm
1361     libiec61883
1362     libilbc
1363     libmodplug
1364     libmp3lame
1365     libnut
1366     libopencore_amrnb
1367     libopencore_amrwb
1368     libopencv
1369     libopenjpeg
1370     libopus
1371     libpulse
1372     libquvi
1373     librtmp
1374     libschroedinger
1375     libshine
1376     libsmbclient
1377     libsoxr
1378     libspeex
1379     libssh
1380     libstagefright_h264
1381     libtheora
1382     libtwolame
1383     libutvideo
1384     libv4l2
1385     libvidstab
1386     libvo_aacenc
1387     libvo_amrwbenc
1388     libvorbis
1389     libvpx
1390     libwavpack
1391     libwebp
1392     libx264
1393     libx265
1394     libxavs
1395     libxcb
1396     libxcb_shm
1397     libxcb_shape
1398     libxcb_xfixes
1399     libxvid
1400     libzmq
1401     libzvbi
1402     lzma
1403     openal
1404     opencl
1405     opengl
1406     openssl
1407     sdl
1408     x11grab
1409     xlib
1410     zlib
1411 "
1412
1413 DOCUMENT_LIST="
1414     doc
1415     htmlpages
1416     manpages
1417     podpages
1418     txtpages
1419 "
1420
1421 FEATURE_LIST="
1422     ftrapv
1423     gray
1424     hardcoded_tables
1425     runtime_cpudetect
1426     safe_bitstream_reader
1427     shared
1428     small
1429     static
1430     swscale_alpha
1431 "
1432
1433 HWACCEL_LIST="
1434     dxva2
1435     vaapi
1436     vda
1437     vdpau
1438     xvmc
1439 "
1440
1441 LIBRARY_LIST="
1442     avcodec
1443     avdevice
1444     avfilter
1445     avformat
1446     avresample
1447     avutil
1448     postproc
1449     swresample
1450     swscale
1451 "
1452
1453 LICENSE_LIST="
1454     gpl
1455     nonfree
1456     version3
1457 "
1458
1459 PROGRAM_LIST="
1460     ffplay
1461     ffprobe
1462     ffserver
1463     ffmpeg
1464 "
1465
1466 SUBSYSTEM_LIST="
1467     dct
1468     dwt
1469     error_resilience
1470     faan
1471     fast_unaligned
1472     fft
1473     lsp
1474     lzo
1475     mdct
1476     pixelutils
1477     network
1478     rdft
1479 "
1480
1481 CONFIG_LIST="
1482     $COMPONENT_LIST
1483     $DOCUMENT_LIST
1484     $EXAMPLE_LIST
1485     $EXTERNAL_LIBRARY_LIST
1486     $FEATURE_LIST
1487     $HWACCEL_LIST
1488     $LICENSE_LIST
1489     $LIBRARY_LIST
1490     $PROGRAM_LIST
1491     $SUBSYSTEM_LIST
1492     fontconfig
1493     incompatible_libav_abi
1494     memalign_hack
1495     memory_poisoning
1496     neon_clobber_test
1497     pic
1498     pod2man
1499     raise_major
1500     thumb
1501     xmm_clobber_test
1502 "
1503
1504 THREADS_LIST="
1505     pthreads
1506     os2threads
1507     w32threads
1508 "
1509
1510 ATOMICS_LIST="
1511     atomics_gcc
1512     atomics_suncc
1513     atomics_win32
1514 "
1515
1516 ARCH_LIST="
1517     aarch64
1518     alpha
1519     arm
1520     avr32
1521     avr32_ap
1522     avr32_uc
1523     bfin
1524     ia64
1525     m68k
1526     mips
1527     mips64
1528     parisc
1529     ppc
1530     ppc64
1531     s390
1532     sh4
1533     sparc
1534     sparc64
1535     tilegx
1536     tilepro
1537     tomi
1538     x86
1539     x86_32
1540     x86_64
1541 "
1542
1543 ARCH_EXT_LIST_ARM="
1544     armv5te
1545     armv6
1546     armv6t2
1547     armv8
1548     neon
1549     vfp
1550     vfpv3
1551     setend
1552 "
1553
1554 ARCH_EXT_LIST_MIPS="
1555     mipsfpu
1556     mips32r2
1557     mipsdspr1
1558     mipsdspr2
1559 "
1560
1561 ARCH_EXT_LIST_X86_SIMD="
1562     amd3dnow
1563     amd3dnowext
1564     avx
1565     avx2
1566     fma3
1567     fma4
1568     mmx
1569     mmxext
1570     sse
1571     sse2
1572     sse3
1573     sse4
1574     sse42
1575     ssse3
1576     xop
1577 "
1578
1579 ARCH_EXT_LIST_PPC="
1580     altivec
1581     dcbzl
1582     ldbrx
1583     ppc4xx
1584     vsx
1585 "
1586
1587 ARCH_EXT_LIST_X86="
1588     $ARCH_EXT_LIST_X86_SIMD
1589     cpunop
1590     i686
1591 "
1592
1593 ARCH_EXT_LIST="
1594     $ARCH_EXT_LIST_ARM
1595     $ARCH_EXT_LIST_PPC
1596     $ARCH_EXT_LIST_X86
1597     $ARCH_EXT_LIST_MIPS
1598     loongson
1599 "
1600
1601 ARCH_FEATURES="
1602     aligned_stack
1603     fast_64bit
1604     fast_clz
1605     fast_cmov
1606     local_aligned_8
1607     local_aligned_16
1608     local_aligned_32
1609     simd_align_16
1610 "
1611
1612 BUILTIN_LIST="
1613     atomic_cas_ptr
1614     atomic_compare_exchange
1615     machine_rw_barrier
1616     MemoryBarrier
1617     mm_empty
1618     rdtsc
1619     sarestart
1620     sync_val_compare_and_swap
1621 "
1622 HAVE_LIST_CMDLINE="
1623     inline_asm
1624     symver
1625     yasm
1626 "
1627
1628 HAVE_LIST_PUB="
1629     bigendian
1630     fast_unaligned
1631     incompatible_libav_abi
1632 "
1633
1634 HEADERS_LIST="
1635     alsa_asoundlib_h
1636     altivec_h
1637     arpa_inet_h
1638     asm_types_h
1639     cdio_paranoia_h
1640     cdio_paranoia_paranoia_h
1641     CL_cl_h
1642     dev_bktr_ioctl_bt848_h
1643     dev_bktr_ioctl_meteor_h
1644     dev_ic_bt8xx_h
1645     dev_video_bktr_ioctl_bt848_h
1646     dev_video_meteor_ioctl_meteor_h
1647     direct_h
1648     dlfcn_h
1649     dxva_h
1650     ES2_gl_h
1651     gsm_h
1652     io_h
1653     mach_mach_time_h
1654     machine_ioctl_bt848_h
1655     machine_ioctl_meteor_h
1656     malloc_h
1657     openjpeg_1_5_openjpeg_h
1658     OpenGL_gl3_h
1659     poll_h
1660     sndio_h
1661     soundcard_h
1662     sys_mman_h
1663     sys_param_h
1664     sys_resource_h
1665     sys_select_h
1666     sys_soundcard_h
1667     sys_time_h
1668     sys_un_h
1669     sys_videoio_h
1670     termios_h
1671     udplite_h
1672     unistd_h
1673     windows_h
1674     winsock2_h
1675 "
1676
1677 INTRINSICS_LIST="
1678     intrinsics_neon
1679 "
1680
1681 MATH_FUNCS="
1682     atanf
1683     atan2f
1684     cbrt
1685     cbrtf
1686     cosf
1687     exp2
1688     exp2f
1689     expf
1690     isinf
1691     isnan
1692     ldexpf
1693     llrint
1694     llrintf
1695     log2
1696     log2f
1697     log10f
1698     lrint
1699     lrintf
1700     powf
1701     rint
1702     round
1703     roundf
1704     sinf
1705     trunc
1706     truncf
1707 "
1708
1709 SYSTEM_FUNCS="
1710     access
1711     aligned_malloc
1712     clock_gettime
1713     closesocket
1714     CommandLineToArgvW
1715     CoTaskMemFree
1716     CryptGenRandom
1717     dlopen
1718     fcntl
1719     flt_lim
1720     fork
1721     getaddrinfo
1722     gethrtime
1723     getopt
1724     GetProcessAffinityMask
1725     GetProcessMemoryInfo
1726     GetProcessTimes
1727     getrusage
1728     getservbyport
1729     GetSystemTimeAsFileTime
1730     gettimeofday
1731     glob
1732     glXGetProcAddress
1733     gmtime_r
1734     inet_aton
1735     isatty
1736     jack_port_get_latency_range
1737     kbhit
1738     localtime_r
1739     lzo1x_999_compress
1740     mach_absolute_time
1741     MapViewOfFile
1742     MoveFileExA
1743     memalign
1744     mkstemp
1745     mmap
1746     mprotect
1747     nanosleep
1748     PeekNamedPipe
1749     posix_memalign
1750     pthread_cancel
1751     sched_getaffinity
1752     SetConsoleTextAttribute
1753     setmode
1754     setrlimit
1755     Sleep
1756     strerror_r
1757     sysconf
1758     sysctl
1759     usleep
1760     VirtualAlloc
1761     wglGetProcAddress
1762 "
1763
1764 TOOLCHAIN_FEATURES="
1765     as_dn_directive
1766     as_func
1767     asm_mod_q
1768     attribute_may_alias
1769     attribute_packed
1770     ebp_available
1771     ebx_available
1772     gnu_as
1773     gnu_windres
1774     ibm_asm
1775     inline_asm_labels
1776     inline_asm_nonlocal_labels
1777     inline_asm_direct_symbol_refs
1778     pragma_deprecated
1779     rsync_contimeout
1780     symver_asm_label
1781     symver_gnu_asm
1782     vfp_args
1783     xform_asm
1784     xmm_clobbers
1785 "
1786
1787 TYPES_LIST="
1788     CONDITION_VARIABLE_Ptr
1789     socklen_t
1790     struct_addrinfo
1791     struct_group_source_req
1792     struct_ip_mreq_source
1793     struct_ipv6_mreq
1794     struct_pollfd
1795     struct_rusage_ru_maxrss
1796     struct_sctp_event_subscribe
1797     struct_sockaddr_in6
1798     struct_sockaddr_sa_len
1799     struct_sockaddr_storage
1800     struct_stat_st_mtim_tv_nsec
1801     struct_v4l2_frmivalenum_discrete
1802 "
1803
1804 HAVE_LIST="
1805     $ARCH_EXT_LIST
1806     $(add_suffix _external $ARCH_EXT_LIST)
1807     $(add_suffix _inline   $ARCH_EXT_LIST)
1808     $ARCH_FEATURES
1809     $ATOMICS_LIST
1810     $BUILTIN_LIST
1811     $HAVE_LIST_CMDLINE
1812     $HAVE_LIST_PUB
1813     $HEADERS_LIST
1814     $INTRINSICS_LIST
1815     $MATH_FUNCS
1816     $SYSTEM_FUNCS
1817     $THREADS_LIST
1818     $TOOLCHAIN_FEATURES
1819     $TYPES_LIST
1820     atomics_native
1821     dos_paths
1822     dxva2api_cobj
1823     dxva2_lib
1824     libc_msvcrt
1825     libdc1394_1
1826     libdc1394_2
1827     makeinfo
1828     makeinfo_html
1829     perl
1830     pod2man
1831     sdl
1832     texi2html
1833     threads
1834     vdpau_x11
1835     xlib
1836 "
1837
1838 # options emitted with CONFIG_ prefix but not available on the command line
1839 CONFIG_EXTRA="
1840     aandcttables
1841     ac3dsp
1842     audio_frame_queue
1843     audiodsp
1844     blockdsp
1845     bswapdsp
1846     cabac
1847     dvprofile
1848     exif
1849     faandct
1850     faanidct
1851     fdctdsp
1852     frame_thread_encoder
1853     gcrypt
1854     golomb
1855     gplv3
1856     h263dsp
1857     h264chroma
1858     h264dsp
1859     h264pred
1860     h264qpel
1861     hpeldsp
1862     huffman
1863     huffyuvdsp
1864     huffyuvencdsp
1865     idctdsp
1866     iirfilter
1867     intrax8
1868     lgplv3
1869     llauddsp
1870     llviddsp
1871     lpc
1872     me_cmp
1873     mpeg_er
1874     mpegaudio
1875     mpegaudiodsp
1876     mpegvideo
1877     mpegvideoenc
1878     nettle
1879     pixblockdsp
1880     qpeldsp
1881     rangecoder
1882     riffdec
1883     riffenc
1884     rtpdec
1885     rtpenc_chain
1886     sinewin
1887     startcode
1888     tpeldsp
1889     videodsp
1890     vp3dsp
1891     wma_freqs
1892 "
1893
1894 CMDLINE_SELECT="
1895     $ARCH_EXT_LIST
1896     $CONFIG_LIST
1897     $HAVE_LIST_CMDLINE
1898     $THREADS_LIST
1899     asm
1900     cross_compile
1901     debug
1902     extra_warnings
1903     logging
1904     lto
1905     optimizations
1906     rpath
1907     stripping
1908 "
1909
1910 PATHS_LIST="
1911     bindir
1912     datadir
1913     docdir
1914     incdir
1915     libdir
1916     mandir
1917     prefix
1918     shlibdir
1919 "
1920
1921 CMDLINE_SET="
1922     $PATHS_LIST
1923     ar
1924     arch
1925     as
1926     assert_level
1927     build_suffix
1928     cc
1929     cpu
1930     cross_prefix
1931     cxx
1932     dep_cc
1933     doxygen
1934     extra_version
1935     gas
1936     host_cc
1937     host_cflags
1938     host_ld
1939     host_ldflags
1940     host_libs
1941     host_os
1942     install
1943     ld
1944     logfile
1945     malloc_prefix
1946     nm
1947     optflags
1948     pkg_config
1949     pkg_config_flags
1950     progs_suffix
1951     random_seed
1952     ranlib
1953     samples
1954     strip
1955     sws_max_filter_size
1956     sysinclude
1957     sysroot
1958     target_exec
1959     target_os
1960     target_path
1961     target_samples
1962     tempprefix
1963     toolchain
1964     valgrind
1965     yasmexe
1966 "
1967
1968 CMDLINE_APPEND="
1969     extra_cflags
1970     extra_cxxflags
1971     host_cppflags
1972 "
1973
1974 # code dependency declarations
1975
1976 # architecture extensions
1977
1978 armv5te_deps="arm"
1979 armv6_deps="arm"
1980 armv6t2_deps="arm"
1981 armv8_deps="aarch64"
1982 neon_deps_any="aarch64 arm"
1983 intrinsics_neon_deps="neon"
1984 vfp_deps_any="aarch64 arm"
1985 vfpv3_deps="vfp"
1986 setend_deps="arm"
1987
1988 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1989
1990 mipsfpu_deps="mips"
1991 mips32r2_deps="mips"
1992 mipsdspr1_deps="mips"
1993 mipsdspr2_deps="mips"
1994
1995 altivec_deps="ppc"
1996 ppc4xx_deps="ppc"
1997 vsx_deps="ppc"
1998
1999 cpunop_deps="i686"
2000 x86_64_select="i686"
2001 x86_64_suggest="fast_cmov"
2002
2003 amd3dnow_deps="mmx"
2004 amd3dnowext_deps="amd3dnow"
2005 i686_deps="x86"
2006 mmx_deps="x86"
2007 mmxext_deps="mmx"
2008 sse_deps="mmxext"
2009 sse2_deps="sse"
2010 sse3_deps="sse2"
2011 ssse3_deps="sse3"
2012 sse4_deps="ssse3"
2013 sse42_deps="sse4"
2014 avx_deps="sse42"
2015 xop_deps="avx"
2016 fma3_deps="avx"
2017 fma4_deps="avx"
2018 avx2_deps="avx"
2019
2020 mmx_external_deps="yasm"
2021 mmx_inline_deps="inline_asm"
2022 mmx_suggest="mmx_external mmx_inline"
2023
2024 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2025     eval dep=\$${ext}_deps
2026     eval ${ext}_external_deps='"${dep}_external"'
2027     eval ${ext}_inline_deps='"${dep}_inline"'
2028     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2029 done
2030
2031 aligned_stack_if_any="aarch64 ppc x86"
2032 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2033 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2034 fast_unaligned_if_any="aarch64 ppc x86"
2035 simd_align_16_if_any="altivec neon sse"
2036
2037 # system capabilities
2038
2039 symver_if_any="symver_asm_label symver_gnu_asm"
2040
2041 # threading support
2042 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2043 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2044 atomics_win32_if="MemoryBarrier"
2045 atomics_native_if_any="$ATOMICS_LIST"
2046 w32threads_deps="atomics_native"
2047 threads_if_any="$THREADS_LIST"
2048
2049 # subsystems
2050 dct_select="rdft"
2051 error_resilience_select="me_cmp"
2052 faandct_deps="faan fdctdsp"
2053 faanidct_deps="faan idctdsp"
2054 frame_thread_encoder_deps="encoders threads"
2055 intrax8_select="error_resilience"
2056 mdct_select="fft"
2057 rdft_select="fft"
2058 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2059 mpeg_er_select="error_resilience"
2060 mpegaudio_select="mpegaudiodsp"
2061 mpegaudiodsp_select="dct"
2062 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2063 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2064
2065 # decoders / encoders
2066 aac_decoder_select="mdct sinewin"
2067 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2068 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2069 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2070 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2071 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2072 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2073 aic_decoder_select="golomb idctdsp"
2074 alac_encoder_select="lpc"
2075 als_decoder_select="bswapdsp"
2076 amrnb_decoder_select="lsp"
2077 amrwb_decoder_select="lsp"
2078 amv_decoder_select="sp5x_decoder exif"
2079 amv_encoder_select="aandcttables mpegvideoenc"
2080 ape_decoder_select="bswapdsp llauddsp"
2081 apng_decoder_select="zlib"
2082 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2083 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2084 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2085 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2086 atrac1_decoder_select="mdct sinewin"
2087 atrac3_decoder_select="mdct"
2088 atrac3p_decoder_select="mdct sinewin"
2089 avrn_decoder_select="exif"
2090 bink_decoder_select="blockdsp hpeldsp"
2091 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2092 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2093 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2094 cllc_decoder_select="bswapdsp"
2095 comfortnoise_encoder_select="lpc"
2096 cook_decoder_select="audiodsp mdct sinewin"
2097 cscd_decoder_select="lzo"
2098 cscd_decoder_suggest="zlib"
2099 dca_decoder_select="mdct"
2100 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2101 dnxhd_decoder_select="blockdsp idctdsp"
2102 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2103 dvvideo_decoder_select="dvprofile idctdsp"
2104 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2105 dxa_decoder_select="zlib"
2106 eac3_decoder_select="ac3_decoder"
2107 eac3_encoder_select="ac3_encoder"
2108 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2109 eatgq_decoder_select="aandcttables"
2110 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2111 exr_decoder_select="zlib"
2112 ffv1_decoder_select="golomb rangecoder"
2113 ffv1_encoder_select="rangecoder"
2114 ffvhuff_decoder_select="huffyuv_decoder"
2115 ffvhuff_encoder_select="huffyuv_encoder"
2116 fic_decoder_select="golomb"
2117 flac_decoder_select="golomb"
2118 flac_encoder_select="bswapdsp golomb lpc"
2119 flashsv_decoder_select="zlib"
2120 flashsv_encoder_select="zlib"
2121 flashsv2_encoder_select="zlib"
2122 flashsv2_decoder_select="zlib"
2123 flv_decoder_select="h263_decoder"
2124 flv_encoder_select="h263_encoder"
2125 fourxm_decoder_select="blockdsp bswapdsp"
2126 fraps_decoder_select="bswapdsp huffman"
2127 g2m_decoder_select="blockdsp idctdsp zlib"
2128 g729_decoder_select="audiodsp"
2129 h261_decoder_select="mpeg_er mpegvideo"
2130 h261_encoder_select="aandcttables mpegvideoenc"
2131 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2132 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2133 h263i_decoder_select="h263_decoder"
2134 h263p_encoder_select="h263_encoder"
2135 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2136 h264_decoder_suggest="error_resilience"
2137 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2138 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2139 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2140 iac_decoder_select="imc_decoder"
2141 imc_decoder_select="bswapdsp fft mdct sinewin"
2142 indeo3_decoder_select="hpeldsp"
2143 interplay_video_decoder_select="hpeldsp"
2144 jpegls_decoder_select="golomb mjpeg_decoder"
2145 jpegls_encoder_select="golomb"
2146 jv_decoder_select="blockdsp"
2147 lagarith_decoder_select="huffyuvdsp"
2148 ljpeg_encoder_select="aandcttables idctdsp"
2149 loco_decoder_select="golomb"
2150 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2151 metasound_decoder_select="lsp mdct sinewin"
2152 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2153 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2154 mjpeg_encoder_select="aandcttables mpegvideoenc"
2155 mjpegb_decoder_select="mjpeg_decoder"
2156 mlp_decoder_select="mlp_parser"
2157 motionpixels_decoder_select="bswapdsp"
2158 mp1_decoder_select="mpegaudio"
2159 mp1float_decoder_select="mpegaudio"
2160 mp2_decoder_select="mpegaudio"
2161 mp2float_decoder_select="mpegaudio"
2162 mp3_decoder_select="mpegaudio"
2163 mp3adu_decoder_select="mpegaudio"
2164 mp3adufloat_decoder_select="mpegaudio"
2165 mp3float_decoder_select="mpegaudio"
2166 mp3on4_decoder_select="mpegaudio"
2167 mp3on4float_decoder_select="mpegaudio"
2168 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2169 mpc8_decoder_select="mpegaudiodsp"
2170 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2171 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2172 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2173 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2174 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2175 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2176 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2177 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2178 mpeg4_encoder_select="h263_encoder"
2179 msmpeg4v1_decoder_select="h263_decoder"
2180 msmpeg4v2_decoder_select="h263_decoder"
2181 msmpeg4v2_encoder_select="h263_encoder"
2182 msmpeg4v3_decoder_select="h263_decoder"
2183 msmpeg4v3_encoder_select="h263_encoder"
2184 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2185 mxpeg_decoder_select="mjpeg_decoder"
2186 nellymoser_decoder_select="mdct sinewin"
2187 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2188 nuv_decoder_select="idctdsp lzo"
2189 on2avc_decoder_select="mdct"
2190 opus_decoder_deps="swresample"
2191 png_decoder_select="zlib"
2192 png_encoder_select="huffyuvencdsp zlib"
2193 prores_decoder_select="blockdsp idctdsp"
2194 prores_encoder_select="fdctdsp"
2195 qcelp_decoder_select="lsp"
2196 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2197 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2198 ra_144_decoder_select="audiodsp"
2199 ralf_decoder_select="golomb"
2200 rawvideo_decoder_select="bswapdsp"
2201 rtjpeg_decoder_select="me_cmp"
2202 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2203 rv10_encoder_select="h263_encoder"
2204 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2205 rv20_encoder_select="h263_encoder"
2206 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2207 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2208 shorten_decoder_select="golomb"
2209 sipr_decoder_select="lsp"
2210 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2211 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2212 sonic_decoder_select="golomb rangecoder"
2213 sonic_encoder_select="golomb rangecoder"
2214 sonic_ls_encoder_select="golomb rangecoder"
2215 sp5x_decoder_select="mjpeg_decoder"
2216 svq1_decoder_select="hpeldsp"
2217 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2218 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2219 svq3_decoder_suggest="zlib"
2220 tak_decoder_select="audiodsp"
2221 theora_decoder_select="vp3_decoder"
2222 thp_decoder_select="mjpeg_decoder"
2223 tiff_decoder_suggest="zlib lzma"
2224 tiff_encoder_suggest="zlib"
2225 truehd_decoder_select="mlp_parser"
2226 truemotion2_decoder_select="bswapdsp"
2227 truespeech_decoder_select="bswapdsp"
2228 tscc_decoder_select="zlib"
2229 twinvq_decoder_select="mdct lsp sinewin"
2230 utvideo_decoder_select="bswapdsp"
2231 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2232 vble_decoder_select="huffyuvdsp"
2233 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2234 vc1image_decoder_select="vc1_decoder"
2235 vorbis_decoder_select="mdct"
2236 vorbis_encoder_select="mdct"
2237 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2238 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2239 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2240 vp6a_decoder_select="vp6_decoder"
2241 vp6f_decoder_select="vp6_decoder"
2242 vp7_decoder_select="h264pred videodsp"
2243 vp8_decoder_select="h264pred videodsp"
2244 vp9_decoder_select="videodsp vp9_parser"
2245 webp_decoder_select="vp8_decoder"
2246 wmalossless_decoder_select="llauddsp"
2247 wmapro_decoder_select="mdct sinewin wma_freqs"
2248 wmav1_decoder_select="mdct sinewin wma_freqs"
2249 wmav1_encoder_select="mdct sinewin wma_freqs"
2250 wmav2_decoder_select="mdct sinewin wma_freqs"
2251 wmav2_encoder_select="mdct sinewin wma_freqs"
2252 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2253 wmv1_decoder_select="h263_decoder"
2254 wmv1_encoder_select="h263_encoder"
2255 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2256 wmv2_encoder_select="h263_encoder"
2257 wmv3_decoder_select="vc1_decoder"
2258 wmv3image_decoder_select="wmv3_decoder"
2259 zerocodec_decoder_select="zlib"
2260 zlib_decoder_select="zlib"
2261 zlib_encoder_select="zlib"
2262 zmbv_decoder_select="zlib"
2263 zmbv_encoder_select="zlib"
2264
2265 # hardware accelerators
2266 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2267 dxva2_deps="dxva2api_h"
2268 vaapi_deps="va_va_h"
2269 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2270 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2271 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2272 xvmc_deps="X11_extensions_XvMClib_h"
2273
2274 h263_vaapi_hwaccel_deps="vaapi"
2275 h263_vaapi_hwaccel_select="h263_decoder"
2276 h263_vdpau_hwaccel_deps="vdpau"
2277 h263_vdpau_hwaccel_select="h263_decoder"
2278 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2279 h264_dxva2_hwaccel_deps="dxva2"
2280 h264_dxva2_hwaccel_select="h264_decoder"
2281 h264_vaapi_hwaccel_deps="vaapi"
2282 h264_vaapi_hwaccel_select="h264_decoder"
2283 h264_vda_decoder_deps="vda"
2284 h264_vda_decoder_select="h264_decoder"
2285 h264_vda_hwaccel_deps="vda"
2286 h264_vda_hwaccel_select="h264_decoder"
2287 h264_vda_old_hwaccel_deps="vda"
2288 h264_vda_old_hwaccel_select="h264_decoder"
2289 h264_vdpau_decoder_deps="vdpau"
2290 h264_vdpau_decoder_select="h264_decoder"
2291 h264_vdpau_hwaccel_deps="vdpau"
2292 h264_vdpau_hwaccel_select="h264_decoder"
2293 mpeg_vdpau_decoder_deps="vdpau"
2294 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2295 mpeg_xvmc_hwaccel_deps="xvmc"
2296 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2297 mpeg1_vdpau_decoder_deps="vdpau"
2298 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2299 mpeg1_vdpau_hwaccel_deps="vdpau"
2300 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2301 mpeg1_xvmc_hwaccel_deps="xvmc"
2302 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2303 mpeg2_crystalhd_decoder_select="crystalhd"
2304 mpeg2_dxva2_hwaccel_deps="dxva2"
2305 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2306 mpeg2_vaapi_hwaccel_deps="vaapi"
2307 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2308 mpeg2_vdpau_hwaccel_deps="vdpau"
2309 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2310 mpeg2_xvmc_hwaccel_deps="xvmc"
2311 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2312 mpeg4_crystalhd_decoder_select="crystalhd"
2313 mpeg4_vaapi_hwaccel_deps="vaapi"
2314 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2315 mpeg4_vdpau_decoder_deps="vdpau"
2316 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2317 mpeg4_vdpau_hwaccel_deps="vdpau"
2318 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2319 msmpeg4_crystalhd_decoder_select="crystalhd"
2320 vc1_crystalhd_decoder_select="crystalhd"
2321 vc1_dxva2_hwaccel_deps="dxva2"
2322 vc1_dxva2_hwaccel_select="vc1_decoder"
2323 vc1_vaapi_hwaccel_deps="vaapi"
2324 vc1_vaapi_hwaccel_select="vc1_decoder"
2325 vc1_vdpau_decoder_deps="vdpau"
2326 vc1_vdpau_decoder_select="vc1_decoder"
2327 vc1_vdpau_hwaccel_deps="vdpau"
2328 vc1_vdpau_hwaccel_select="vc1_decoder"
2329 wmv3_crystalhd_decoder_select="crystalhd"
2330 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2331 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2332 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2333 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2334
2335 # parsers
2336 h264_parser_select="h264_decoder"
2337 hevc_parser_select="hevc_decoder"
2338 mpegvideo_parser_select="mpegvideo"
2339 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2340 vc1_parser_select="mpegvideo startcode vc1_decoder"
2341
2342 # external libraries
2343 libaacplus_encoder_deps="libaacplus"
2344 libcelt_decoder_deps="libcelt"
2345 libfaac_encoder_deps="libfaac"
2346 libfaac_encoder_select="audio_frame_queue"
2347 libfdk_aac_decoder_deps="libfdk_aac"
2348 libfdk_aac_encoder_deps="libfdk_aac"
2349 libfdk_aac_encoder_select="audio_frame_queue"
2350 libgme_demuxer_deps="libgme"
2351 libgsm_decoder_deps="libgsm"
2352 libgsm_encoder_deps="libgsm"
2353 libgsm_ms_decoder_deps="libgsm"
2354 libgsm_ms_encoder_deps="libgsm"
2355 libilbc_decoder_deps="libilbc"
2356 libilbc_encoder_deps="libilbc"
2357 libmodplug_demuxer_deps="libmodplug"
2358 libmp3lame_encoder_deps="libmp3lame"
2359 libmp3lame_encoder_select="audio_frame_queue"
2360 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2361 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2362 libopencore_amrnb_encoder_select="audio_frame_queue"
2363 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2364 libopenjpeg_decoder_deps="libopenjpeg"
2365 libopenjpeg_encoder_deps="libopenjpeg"
2366 libopus_decoder_deps="libopus"
2367 libopus_encoder_deps="libopus"
2368 libopus_encoder_select="audio_frame_queue"
2369 libquvi_demuxer_deps="libquvi"
2370 libschroedinger_decoder_deps="libschroedinger"
2371 libschroedinger_encoder_deps="libschroedinger"
2372 libshine_encoder_deps="libshine"
2373 libshine_encoder_select="audio_frame_queue"
2374 libspeex_decoder_deps="libspeex"
2375 libspeex_encoder_deps="libspeex"
2376 libspeex_encoder_select="audio_frame_queue"
2377 libstagefright_h264_decoder_deps="libstagefright_h264"
2378 libtheora_encoder_deps="libtheora"
2379 libtwolame_encoder_deps="libtwolame"
2380 libvo_aacenc_encoder_deps="libvo_aacenc"
2381 libvo_aacenc_encoder_select="audio_frame_queue"
2382 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2383 libvorbis_decoder_deps="libvorbis"
2384 libvorbis_encoder_deps="libvorbis"
2385 libvorbis_encoder_select="audio_frame_queue"
2386 libvpx_vp8_decoder_deps="libvpx"
2387 libvpx_vp8_encoder_deps="libvpx"
2388 libvpx_vp9_decoder_deps="libvpx"
2389 libvpx_vp9_encoder_deps="libvpx"
2390 libwavpack_encoder_deps="libwavpack"
2391 libwebp_encoder_deps="libwebp"
2392 libx264_encoder_deps="libx264"
2393 libx264rgb_encoder_deps="libx264"
2394 libx264rgb_encoder_select="libx264_encoder"
2395 libx265_encoder_deps="libx265"
2396 libxavs_encoder_deps="libxavs"
2397 libxvid_encoder_deps="libxvid"
2398 libutvideo_decoder_deps="libutvideo"
2399 libutvideo_encoder_deps="libutvideo"
2400 libzvbi_teletext_decoder_deps="libzvbi"
2401
2402 # demuxers / muxers
2403 ac3_demuxer_select="ac3_parser"
2404 asf_demuxer_select="riffdec"
2405 asf_muxer_select="riffenc"
2406 asf_stream_muxer_select="asf_muxer"
2407 avi_demuxer_select="riffdec exif"
2408 avi_muxer_select="riffenc"
2409 avisynth_demuxer_deps="avisynth"
2410 avisynth_demuxer_select="riffdec"
2411 caf_demuxer_select="riffdec"
2412 dash_muxer_select="mp4_muxer"
2413 dirac_demuxer_select="dirac_parser"
2414 dts_demuxer_select="dca_parser"
2415 dtshd_demuxer_select="dca_parser"
2416 dv_demuxer_select="dvprofile"
2417 dv_muxer_select="dvprofile"
2418 dxa_demuxer_select="riffdec"
2419 eac3_demuxer_select="ac3_parser"
2420 f4v_muxer_select="mov_muxer"
2421 flac_demuxer_select="flac_parser"
2422 hds_muxer_select="flv_muxer"
2423 hls_muxer_select="mpegts_muxer"
2424 image2_alias_pix_demuxer_select="image2_demuxer"
2425 image2_brender_pix_demuxer_select="image2_demuxer"
2426 ipod_muxer_select="mov_muxer"
2427 ismv_muxer_select="mov_muxer"
2428 libnut_demuxer_deps="libnut"
2429 libnut_muxer_deps="libnut"
2430 matroska_audio_muxer_select="matroska_muxer"
2431 matroska_demuxer_select="riffdec"
2432 matroska_demuxer_suggest="bzlib lzo zlib"
2433 matroska_muxer_select="riffenc"
2434 mmf_muxer_select="riffenc"
2435 mov_demuxer_select="riffdec"
2436 mov_demuxer_suggest="zlib"
2437 mov_muxer_select="riffenc rtpenc_chain ac3_parser"
2438 mp3_demuxer_select="mpegaudio_parser"
2439 mp4_muxer_select="mov_muxer"
2440 mpegts_muxer_select="adts_muxer latm_muxer"
2441 mpegtsraw_demuxer_select="mpegts_demuxer"
2442 mxf_d10_muxer_select="mxf_muxer"
2443 nut_muxer_select="riffenc"
2444 nuv_demuxer_select="riffdec"
2445 oga_muxer_select="ogg_muxer"
2446 ogg_demuxer_select="golomb"
2447 opus_muxer_select="ogg_muxer"
2448 psp_muxer_select="mov_muxer"
2449 rtp_demuxer_select="sdp_demuxer"
2450 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2451 rtsp_demuxer_select="http_protocol rtpdec"
2452 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2453 sap_demuxer_select="sdp_demuxer"
2454 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2455 sdp_demuxer_select="rtpdec"
2456 smoothstreaming_muxer_select="ismv_muxer"
2457 spdif_muxer_select="aac_parser"
2458 spx_muxer_select="ogg_muxer"
2459 tak_demuxer_select="tak_parser"
2460 tg2_muxer_select="mov_muxer"
2461 tgp_muxer_select="mov_muxer"
2462 vobsub_demuxer_select="mpegps_demuxer"
2463 w64_demuxer_select="wav_demuxer"
2464 w64_muxer_select="wav_muxer"
2465 wav_demuxer_select="riffdec"
2466 wav_muxer_select="riffenc"
2467 webm_muxer_select="riffenc"
2468 wtv_demuxer_select="riffdec"
2469 wtv_muxer_select="riffenc"
2470 xmv_demuxer_select="riffdec"
2471 xwma_demuxer_select="riffdec"
2472
2473 # indevs / outdevs
2474 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2475 alsa_outdev_deps="alsa_asoundlib_h"
2476 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2477 avfoundation_indev_select="avfoundation"
2478 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2479 caca_outdev_deps="libcaca"
2480 decklink_outdev_deps="decklink pthreads"
2481 decklink_outdev_extralibs="-lstdc++"
2482 decklink_indev_deps="decklink pthreads"
2483 decklink_indev_extralibs="-lstdc++"
2484 dshow_indev_deps="IBaseFilter"
2485 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2486 dv1394_indev_deps="dv1394"
2487 dv1394_indev_select="dv_demuxer"
2488 fbdev_indev_deps="linux_fb_h"
2489 fbdev_outdev_deps="linux_fb_h"
2490 gdigrab_indev_deps="CreateDIBSection"
2491 gdigrab_indev_extralibs="-lgdi32"
2492 gdigrab_indev_select="bmp_decoder"
2493 iec61883_indev_deps="libiec61883"
2494 jack_indev_deps="jack_jack_h sem_timedwait"
2495 lavfi_indev_deps="avfilter"
2496 libcdio_indev_deps="libcdio"
2497 libdc1394_indev_deps="libdc1394"
2498 libv4l2_indev_deps="libv4l2"
2499 openal_indev_deps="openal"
2500 opengl_outdev_deps="opengl"
2501 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2502 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2503 pulse_indev_deps="libpulse"
2504 pulse_outdev_deps="libpulse"
2505 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2506 qtkit_indev_select="qtkit"
2507 sdl_outdev_deps="sdl"
2508 sndio_indev_deps="sndio_h"
2509 sndio_outdev_deps="sndio_h"
2510 v4l_indev_deps="linux_videodev_h"
2511 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2512 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2513 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2514 vfwcap_indev_extralibs="-lavicap32"
2515 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2516 xv_outdev_extralibs="-lXv -lX11 -lXext"
2517 x11grab_indev_deps="x11grab"
2518 x11grab_xcb_indev_deps="libxcb"
2519
2520 # protocols
2521 bluray_protocol_deps="libbluray"
2522 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2523 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2524 ffrtmpcrypt_protocol_select="tcp_protocol"
2525 ffrtmphttp_protocol_deps="!librtmp_protocol"
2526 ffrtmphttp_protocol_select="http_protocol"
2527 ftp_protocol_select="tcp_protocol"
2528 gopher_protocol_select="network"
2529 http_protocol_select="tcp_protocol"
2530 httpproxy_protocol_select="tcp_protocol"
2531 https_protocol_select="tls_protocol"
2532 icecast_protocol_select="http_protocol"
2533 librtmp_protocol_deps="librtmp"
2534 librtmpe_protocol_deps="librtmp"
2535 librtmps_protocol_deps="librtmp"
2536 librtmpt_protocol_deps="librtmp"
2537 librtmpte_protocol_deps="librtmp"
2538 libsmbclient_protocol_deps="libsmbclient gplv3"
2539 libssh_protocol_deps="libssh"
2540 mmsh_protocol_select="http_protocol"
2541 mmst_protocol_select="network"
2542 rtmp_protocol_deps="!librtmp_protocol"
2543 rtmp_protocol_select="tcp_protocol"
2544 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2545 rtmps_protocol_deps="!librtmp_protocol"
2546 rtmps_protocol_select="tls_protocol"
2547 rtmpt_protocol_select="ffrtmphttp_protocol"
2548 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2549 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2550 rtp_protocol_select="udp_protocol"
2551 sctp_protocol_deps="struct_sctp_event_subscribe"
2552 sctp_protocol_select="network"
2553 srtp_protocol_select="rtp_protocol"
2554 tcp_protocol_select="network"
2555 tls_protocol_deps_any="openssl gnutls"
2556 tls_protocol_select="tcp_protocol"
2557 udp_protocol_select="network"
2558 udplite_protocol_select="network"
2559 unix_protocol_deps="sys_un_h"
2560 unix_protocol_select="network"
2561
2562 # filters
2563 amovie_filter_deps="avcodec avformat"
2564 aresample_filter_deps="swresample"
2565 ass_filter_deps="libass"
2566 asyncts_filter_deps="avresample"
2567 atempo_filter_deps="avcodec"
2568 atempo_filter_select="rdft"
2569 azmq_filter_deps="libzmq"
2570 blackframe_filter_deps="gpl"
2571 boxblur_filter_deps="gpl"
2572 bs2b_filter_deps="libbs2b"
2573 colormatrix_filter_deps="gpl"
2574 cropdetect_filter_deps="gpl"
2575 delogo_filter_deps="gpl"
2576 deshake_filter_select="pixelutils"
2577 drawtext_filter_deps="libfreetype"
2578 ebur128_filter_deps="gpl"
2579 flite_filter_deps="libflite"
2580 frei0r_filter_deps="frei0r dlopen"
2581 frei0r_src_filter_deps="frei0r dlopen"
2582 geq_filter_deps="gpl"
2583 histeq_filter_deps="gpl"
2584 hqdn3d_filter_deps="gpl"
2585 interlace_filter_deps="gpl"
2586 kerndeint_filter_deps="gpl"
2587 ladspa_filter_deps="ladspa dlopen"
2588 mcdeint_filter_deps="avcodec gpl"
2589 movie_filter_deps="avcodec avformat"
2590 mp_filter_deps="gpl avcodec swscale"
2591 mpdecimate_filter_deps="gpl"
2592 mpdecimate_filter_select="pixelutils"
2593 mptestsrc_filter_deps="gpl"
2594 negate_filter_deps="lut_filter"
2595 perspective_filter_deps="gpl"
2596 ocv_filter_deps="libopencv"
2597 owdenoise_filter_deps="gpl"
2598 pan_filter_deps="swresample"
2599 phase_filter_deps="gpl"
2600 pp_filter_deps="gpl postproc"
2601 pullup_filter_deps="gpl"
2602 removelogo_filter_deps="avcodec avformat swscale"
2603 resample_filter_deps="avresample"
2604 sab_filter_deps="gpl swscale"
2605 scale_filter_deps="swscale"
2606 select_filter_select="pixelutils"
2607 smartblur_filter_deps="gpl swscale"
2608 showspectrum_filter_deps="avcodec"
2609 showspectrum_filter_select="rdft"
2610 spp_filter_deps="gpl avcodec"
2611 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2612 stereo3d_filter_deps="gpl"
2613 subtitles_filter_deps="avformat avcodec libass"
2614 super2xsai_filter_deps="gpl"
2615 tinterlace_filter_deps="gpl"
2616 vidstabdetect_filter_deps="libvidstab"
2617 vidstabtransform_filter_deps="libvidstab"
2618 pixfmts_super2xsai_test_deps="super2xsai_filter"
2619 tinterlace_merge_test_deps="tinterlace_filter"
2620 tinterlace_pad_test_deps="tinterlace_filter"
2621 zmq_filter_deps="libzmq"
2622 zoompan_filter_deps="swscale"
2623
2624 # examples
2625 avio_reading="avformat avcodec avutil"
2626 avcodec_example_deps="avcodec avutil"
2627 decoding_encoding_example_deps="avcodec avformat avutil"
2628 demuxing_decoding_example_deps="avcodec avformat avutil"
2629 extract_mvs_example_deps="avcodec avformat avutil"
2630 filter_audio_example_deps="avfilter avutil"
2631 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2632 filtering_video_example_deps="avfilter avcodec avformat avutil"
2633 metadata_example_deps="avformat avutil"
2634 muxing_example_deps="avcodec avformat avutil swscale"
2635 remuxing_example_deps="avcodec avformat avutil"
2636 resampling_audio_example_deps="avutil swresample"
2637 scaling_video_example_deps="avutil swscale"
2638 transcode_aac_example_deps="avcodec avformat swresample"
2639 transcoding_example_deps="avfilter avcodec avformat avutil"
2640
2641 # libraries, in linking order
2642 avcodec_deps="avutil"
2643 avdevice_deps="avformat avcodec avutil"
2644 avfilter_deps="avutil"
2645 avformat_deps="avcodec avutil"
2646 avresample_deps="avutil"
2647 postproc_deps="avutil gpl"
2648 swresample_deps="avutil"
2649 swscale_deps="avutil"
2650
2651 # programs
2652 ffmpeg_deps="avcodec avfilter avformat swresample"
2653 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2654                null_filter
2655                setpts_filter trim_filter"
2656 ffplay_deps="avcodec avformat swscale swresample sdl"
2657 ffplay_libs='$sdl_libs'
2658 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2659 ffprobe_deps="avcodec avformat"
2660 ffserver_deps="avformat fork sarestart"
2661 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2662
2663 # documentation
2664 podpages_deps="perl"
2665 manpages_deps="perl pod2man"
2666 htmlpages_deps="perl"
2667 htmlpages_deps_any="makeinfo_html texi2html"
2668 txtpages_deps="perl makeinfo"
2669 doc_deps_any="manpages htmlpages podpages txtpages"
2670
2671 # default parameters
2672
2673 logfile="config.log"
2674
2675 # installation paths
2676 prefix_default="/usr/local"
2677 bindir_default='${prefix}/bin'
2678 datadir_default='${prefix}/share/ffmpeg'
2679 docdir_default='${prefix}/share/doc/ffmpeg'
2680 incdir_default='${prefix}/include'
2681 libdir_default='${prefix}/lib'
2682 mandir_default='${prefix}/share/man'
2683 shlibdir_default="$libdir_default"
2684
2685 # toolchain
2686 ar_default="ar"
2687 cc_default="gcc"
2688 cxx_default="g++"
2689 host_cc_default="gcc"
2690 cp_f="cp -f"
2691 doxygen_default="doxygen"
2692 install="install"
2693 ln_s="ln -s -f"
2694 nm_default="nm -g"
2695 objformat="elf"
2696 pkg_config_default=pkg-config
2697 ranlib_default="ranlib"
2698 strip_default="strip"
2699 yasmexe_default="yasm"
2700 windres_default="windres"
2701
2702 # OS
2703 target_os_default=$(tolower $(uname -s))
2704 host_os=$target_os_default
2705
2706 # machine
2707 if test "$target_os_default" = aix; then
2708     arch_default=$(uname -p)
2709     strip_default="strip -X32_64"
2710 else
2711     arch_default=$(uname -m)
2712 fi
2713 cpu="generic"
2714 intrinsics="none"
2715
2716 # configurable options
2717 enable $PROGRAM_LIST
2718 enable $DOCUMENT_LIST
2719 enable $EXAMPLE_LIST
2720 enable $(filter_out avresample $LIBRARY_LIST)
2721 enable stripping
2722
2723 enable asm
2724 enable debug
2725 enable doc
2726 enable faan faandct faanidct
2727 enable optimizations
2728 enable runtime_cpudetect
2729 enable safe_bitstream_reader
2730 enable static
2731 enable swscale_alpha
2732
2733 sws_max_filter_size_default=256
2734 set_default sws_max_filter_size
2735
2736 # Enable hwaccels by default.
2737 enable dxva2 vaapi vda vdpau xvmc
2738 enable xlib
2739
2740 # build settings
2741 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2742 LIBPREF="lib"
2743 LIBSUF=".a"
2744 FULLNAME='$(NAME)$(BUILDSUF)'
2745 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2746 SLIBPREF="lib"
2747 SLIBSUF=".so"
2748 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2749 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2750 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2751 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2752 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2753 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2754
2755 asflags_filter=echo
2756 cflags_filter=echo
2757 ldflags_filter=echo
2758
2759 AS_C='-c'
2760 AS_O='-o $@'
2761 CC_C='-c'
2762 CC_E='-E -o $@'
2763 CC_O='-o $@'
2764 CXX_C='-c'
2765 CXX_O='-o $@'
2766 LD_O='-o $@'
2767 LD_LIB='-l%'
2768 LD_PATH='-L'
2769 HOSTCC_C='-c'
2770 HOSTCC_E='-E -o $@'
2771 HOSTCC_O='-o $@'
2772 HOSTLD_O='-o $@'
2773
2774 host_libs='-lm'
2775 host_cflags_filter=echo
2776 host_ldflags_filter=echo
2777
2778 target_path='$(CURDIR)'
2779
2780 # since the object filename is not given with the -MM flag, the compiler
2781 # is only able to print the basename, and we must add the path ourselves
2782 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2783 DEPFLAGS='-MM'
2784
2785 # find source path
2786 if test -f configure; then
2787     source_path=.
2788 else
2789     source_path=$(cd $(dirname "$0"); pwd)
2790     echo "$source_path" | grep -q '[[:blank:]]' &&
2791         die "Out of tree builds are impossible with whitespace in source path."
2792     test -e "$source_path/config.h" &&
2793         die "Out of tree builds are impossible with config.h in source dir."
2794 fi
2795
2796 for v in "$@"; do
2797     r=${v#*=}
2798     l=${v%"$r"}
2799     r=$(sh_quote "$r")
2800     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2801 done
2802
2803 find_things(){
2804     thing=$1
2805     pattern=$2
2806     file=$source_path/$3
2807     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2808 }
2809
2810 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2811 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2812 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2813 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2814 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2815 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2816 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2817 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2818 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2819 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2820 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2821
2822 ALL_COMPONENTS="
2823     $BSF_LIST
2824     $DECODER_LIST
2825     $DEMUXER_LIST
2826     $ENCODER_LIST
2827     $FILTER_LIST
2828     $HWACCEL_LIST
2829     $INDEV_LIST
2830     $MUXER_LIST
2831     $OUTDEV_LIST
2832     $PARSER_LIST
2833     $PROTOCOL_LIST
2834 "
2835
2836 for n in $COMPONENT_LIST; do
2837     v=$(toupper ${n%s})_LIST
2838     eval enable \$$v
2839     eval ${n}_if_any="\$$v"
2840 done
2841
2842 enable $ARCH_EXT_LIST
2843
2844 die_unknown(){
2845     echo "Unknown option \"$1\"."
2846     echo "See $0 --help for available options."
2847     exit 1
2848 }
2849
2850 print_3_columns() {
2851     cat | tr ' ' '\n' | sort | pr -r -3 -t
2852 }
2853
2854 show_list() {
2855     suffix=_$1
2856     shift
2857     echo $* | sed s/$suffix//g | print_3_columns
2858     exit 0
2859 }
2860
2861 rand_list(){
2862     IFS=', '
2863     set -- $*
2864     unset IFS
2865     for thing; do
2866         comp=${thing%:*}
2867         prob=${thing#$comp}
2868         prob=${prob#:}
2869         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2870         echo "prob ${prob:-0.5}"
2871         printf '%s\n' $comp
2872     done
2873 }
2874
2875 do_random(){
2876     action=$1
2877     shift
2878     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2879     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2880 }
2881
2882 for opt do
2883     optval="${opt#*=}"
2884     case "$opt" in
2885         --extra-ldflags=*)
2886             add_ldflags $optval
2887         ;;
2888         --extra-ldexeflags=*)
2889             add_ldexeflags $optval
2890         ;;
2891         --extra-libs=*)
2892             add_extralibs $optval
2893         ;;
2894         --disable-devices)
2895             disable $INDEV_LIST $OUTDEV_LIST
2896         ;;
2897         --enable-debug=*)
2898             debuglevel="$optval"
2899         ;;
2900         --disable-programs)
2901             disable $PROGRAM_LIST
2902         ;;
2903         --disable-everything)
2904             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2905         ;;
2906         --disable-all)
2907             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2908             disable $LIBRARY_LIST $PROGRAM_LIST doc
2909         ;;
2910         --enable-random|--disable-random)
2911             action=${opt%%-random}
2912             do_random ${action#--} $COMPONENT_LIST
2913         ;;
2914         --enable-random=*|--disable-random=*)
2915             action=${opt%%-random=*}
2916             do_random ${action#--} $optval
2917         ;;
2918         --enable-*=*|--disable-*=*)
2919             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2920             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2921             eval list=\$$(toupper $thing)_LIST
2922             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2923             list=$(filter "$name" $list)
2924             [ "$list" = "" ] && warn "Option $opt did not match anything"
2925             $action $list
2926         ;;
2927         --enable-?*|--disable-?*)
2928             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2929             if is_in $option $COMPONENT_LIST; then
2930                 test $action = disable && action=unset
2931                 eval $action \$$(toupper ${option%s})_LIST
2932             elif is_in $option $CMDLINE_SELECT; then
2933                 $action $option
2934             else
2935                 die_unknown $opt
2936             fi
2937         ;;
2938         --list-*)
2939             NAME="${opt#--list-}"
2940             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2941             NAME=${NAME%s}
2942             eval show_list $NAME \$$(toupper $NAME)_LIST
2943         ;;
2944         --help|-h) show_help
2945         ;;
2946         --fatal-warnings) enable fatal_warnings
2947         ;;
2948         *)
2949             optname="${opt%%=*}"
2950             optname="${optname#--}"
2951             optname=$(echo "$optname" | sed 's/-/_/g')
2952             if is_in $optname $CMDLINE_SET; then
2953                 eval $optname='$optval'
2954             elif is_in $optname $CMDLINE_APPEND; then
2955                 append $optname "$optval"
2956             else
2957                 die_unknown $opt
2958             fi
2959         ;;
2960     esac
2961 done
2962
2963 disabled logging && logfile=/dev/null
2964
2965 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2966 set >> $logfile
2967
2968 test -n "$cross_prefix" && enable cross_compile
2969
2970 if enabled cross_compile; then
2971     test -n "$arch" && test -n "$target_os" ||
2972         die "Must specify target arch and OS when cross-compiling"
2973 fi
2974
2975 ar_default="${cross_prefix}${ar_default}"
2976 cc_default="${cross_prefix}${cc_default}"
2977 cxx_default="${cross_prefix}${cxx_default}"
2978 nm_default="${cross_prefix}${nm_default}"
2979 pkg_config_default="${cross_prefix}${pkg_config_default}"
2980 ranlib_default="${cross_prefix}${ranlib_default}"
2981 strip_default="${cross_prefix}${strip_default}"
2982 windres_default="${cross_prefix}${windres_default}"
2983
2984 sysinclude_default="${sysroot}/usr/include"
2985
2986 test -n "$valgrind" && toolchain="valgrind-memcheck"
2987
2988 case "$toolchain" in
2989     clang-asan)
2990         cc_default="clang"
2991         add_cflags  -fsanitize=address
2992         add_ldflags -fsanitize=address
2993     ;;
2994     clang-tsan)
2995         cc_default="clang"
2996         add_cflags  -fsanitize=thread -pie
2997         add_ldflags -fsanitize=thread -pie
2998     ;;
2999     clang-usan)
3000         cc_default="clang"
3001         add_cflags  -fsanitize=undefined
3002         add_ldflags -fsanitize=undefined
3003     ;;
3004     gcc-asan)
3005         cc_default="gcc"
3006         add_cflags  -fsanitize=address
3007         add_ldflags -fsanitize=address
3008     ;;
3009     gcc-tsan)
3010         cc_default="gcc"
3011         add_cflags  -fsanitize=thread -pie -fPIC
3012         add_ldflags -fsanitize=thread -pie -fPIC
3013     ;;
3014     gcc-usan)
3015         cc_default="gcc"
3016         add_cflags  -fsanitize=undefined
3017         add_ldflags -fsanitize=undefined
3018     ;;
3019     valgrind-massif)
3020         target_exec_default=${valgrind:-"valgrind"}
3021         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"
3022     ;;
3023     valgrind-memcheck)
3024         target_exec_default=${valgrind:-"valgrind"}
3025         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3026     ;;
3027     msvc)
3028         # Check whether the current MSVC version needs the C99 converter.
3029         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3030         # support enough of C99 to build ffmpeg. Default to the new
3031         # behaviour if the regexp was unable to match anything, since this
3032         # successfully parses the version number of existing supported
3033         # versions that require the converter (MSVC 2010 and 2012).
3034         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3035         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3036             cc_default="cl"
3037         else
3038             cc_default="c99wrap cl"
3039         fi
3040         ld_default="link"
3041         nm_default="dumpbin -symbols"
3042         ar_default="lib"
3043         target_os_default="win32"
3044         # Use a relative path for TMPDIR. This makes sure all the
3045         # ffconf temp files are written with a relative path, avoiding
3046         # issues with msys/win32 path conversion for MSVC parameters
3047         # such as -Fo<file> or -out:<file>.
3048         TMPDIR=.
3049     ;;
3050     icl)
3051         cc_default="icl"
3052         ld_default="xilink"
3053         nm_default="dumpbin -symbols"
3054         ar_default="xilib"
3055         target_os_default="win32"
3056         TMPDIR=.
3057     ;;
3058     gcov)
3059         add_cflags  -fprofile-arcs -ftest-coverage
3060         add_ldflags -fprofile-arcs -ftest-coverage
3061     ;;
3062     hardened)
3063         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3064         add_cflags   -fno-strict-overflow -fstack-protector-all
3065         add_ldflags  -Wl,-z,relro -Wl,-z,now
3066     ;;
3067     ?*)
3068         die "Unknown toolchain $toolchain"
3069     ;;
3070 esac
3071
3072 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3073     target_exec target_os yasmexe
3074 enabled cross_compile || host_cc_default=$cc
3075 set_default host_cc
3076
3077 pkg_config_fail_message=""
3078 if ! $pkg_config --version >/dev/null 2>&1; then
3079     warn "$pkg_config not found, library detection may fail."
3080     pkg_config=false
3081 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3082     pkg_config_fail_message="
3083 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3084 fi
3085
3086 if test $doxygen != $doxygen_default && \
3087   ! $doxygen --version >/dev/null 2>&1; then
3088     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3089 fi
3090
3091 exesuf() {
3092     case $1 in
3093         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3094     esac
3095 }
3096
3097 EXESUF=$(exesuf $target_os)
3098 HOSTEXESUF=$(exesuf $host_os)
3099
3100 # set temporary file name
3101 : ${TMPDIR:=$TEMPDIR}
3102 : ${TMPDIR:=$TMP}
3103 : ${TMPDIR:=/tmp}
3104
3105 if [ -n "$tempprefix" ] ; then
3106     mktemp(){
3107         echo $tempprefix.${HOSTNAME}.${UID}
3108     }
3109 elif ! check_cmd mktemp -u XXXXXX; then
3110     # simple replacement for missing mktemp
3111     # NOT SAFE FOR GENERAL USE
3112     mktemp(){
3113         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3114     }
3115 fi
3116
3117 tmpfile(){
3118     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3119         (set -C; exec > $tmp) 2>/dev/null ||
3120         die "Unable to create temporary file in $TMPDIR."
3121     append TMPFILES $tmp
3122     eval $1=$tmp
3123 }
3124
3125 trap 'rm -f -- $TMPFILES' EXIT
3126
3127 tmpfile TMPASM .asm
3128 tmpfile TMPC   .c
3129 tmpfile TMPCPP .cpp
3130 tmpfile TMPE   $EXESUF
3131 tmpfile TMPH   .h
3132 tmpfile TMPM   .m
3133 tmpfile TMPO   .o
3134 tmpfile TMPS   .S
3135 tmpfile TMPSH  .sh
3136 tmpfile TMPV   .ver
3137
3138 unset -f mktemp
3139
3140 chmod +x $TMPE
3141
3142 # make sure we can execute files in $TMPDIR
3143 cat > $TMPSH 2>> $logfile <<EOF
3144 #! /bin/sh
3145 EOF
3146 chmod +x $TMPSH >> $logfile 2>&1
3147 if ! $TMPSH >> $logfile 2>&1; then
3148     cat <<EOF
3149 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3150 variable to another directory and make sure that it is not mounted noexec.
3151 EOF
3152     die "Sanity test failed."
3153 fi
3154
3155 armasm_flags(){
3156     for flag; do
3157         case $flag in
3158             # Filter out MSVC cl.exe options from cflags that shouldn't
3159             # be passed to gas-preprocessor
3160             -M[TD]*)                                            ;;
3161             *)                  echo $flag                      ;;
3162         esac
3163    done
3164 }
3165
3166 ccc_flags(){
3167     for flag; do
3168         case $flag in
3169             -std=c99)           echo -c99                       ;;
3170             -mcpu=*)            echo -arch ${flag#*=}           ;;
3171             -mieee)             echo -ieee                      ;;
3172             -O*|-fast)          echo $flag                      ;;
3173             -fno-math-errno)    echo -assume nomath_errno       ;;
3174             -g)                 echo -g3                        ;;
3175             -Wall)              echo -msg_enable level2         ;;
3176             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3177             -Wl,*)              echo $flag                      ;;
3178             -f*|-W*)                                            ;;
3179             *)                  echo $flag                      ;;
3180         esac
3181    done
3182 }
3183
3184 cparser_flags(){
3185     for flag; do
3186         case $flag in
3187             -Wno-switch)             echo -Wno-switch-enum ;;
3188             -Wno-format-zero-length) ;;
3189             -Wdisabled-optimization) ;;
3190             -Wno-pointer-sign)       echo -Wno-other ;;
3191             *)                       echo $flag ;;
3192         esac
3193     done
3194 }
3195
3196 msvc_common_flags(){
3197     for flag; do
3198         case $flag in
3199             # In addition to specifying certain flags under the compiler
3200             # specific filters, they must be specified here as well or else the
3201             # generic catch all at the bottom will print the original flag.
3202             -Wall)                ;;
3203             -std=c99)             ;;
3204             # Common flags
3205             -fomit-frame-pointer) ;;
3206             -g)                   echo -Z7 ;;
3207             -fno-math-errno)      ;;
3208             -fno-common)          ;;
3209             -fno-signed-zeros)    ;;
3210             -fPIC)                ;;
3211             -mthumb)              ;;
3212             -march=*)             ;;
3213             -lz)                  echo zlib.lib ;;
3214             -lavifil32)           echo vfw32.lib ;;
3215             -lavicap32)           echo vfw32.lib user32.lib ;;
3216             -l*)                  echo ${flag#-l}.lib ;;
3217             *)                    echo $flag ;;
3218         esac
3219     done
3220 }
3221
3222 msvc_flags(){
3223     msvc_common_flags "$@"
3224     for flag; do
3225         case $flag in
3226             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3227                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3228                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3229                                        -wd4554 \
3230                                        -wd4273 -wd4701 ;;
3231         esac
3232     done
3233 }
3234
3235 icl_flags(){
3236     msvc_common_flags "$@"
3237     for flag; do
3238         case $flag in
3239             # Despite what Intel's documentation says -Wall, which is supported
3240             # on Windows, does enable remarks so disable them here.
3241             -Wall)                echo $flag -Qdiag-disable:remark ;;
3242             -std=c99)             echo -Qstd=c99 ;;
3243             -flto)                echo -ipo ;;
3244         esac
3245     done
3246 }
3247
3248 icc_flags(){
3249     for flag; do
3250         case $flag in
3251             -flto)                echo -ipo ;;
3252             *)                    echo $flag ;;
3253         esac
3254     done
3255 }
3256
3257 pgi_flags(){
3258     for flag; do
3259         case $flag in
3260             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3261             -fomit-frame-pointer) echo -Mnoframe ;;
3262             -g)                   echo -gopt ;;
3263             *)                    echo $flag ;;
3264         esac
3265     done
3266 }
3267
3268 suncc_flags(){
3269     for flag; do
3270         case $flag in
3271             -march=*|-mcpu=*)
3272                 case "${flag#*=}" in
3273                     native)                   echo -xtarget=native       ;;
3274                     v9|niagara)               echo -xarch=sparc          ;;
3275                     ultrasparc)               echo -xarch=sparcvis       ;;
3276                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3277                     i586|pentium)             echo -xchip=pentium        ;;
3278                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3279                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3280                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3281                     pentium4*)          echo -xtarget=pentium4           ;;
3282                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3283                     *-sse3)             echo -xarch=sse3                 ;;
3284                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3285                     bonnell)                   echo -xarch=ssse3         ;;
3286                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3287                     westmere)                  echo -xtarget=westmere    ;;
3288                     silvermont)                echo -xarch=sse4_2        ;;
3289                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3290                     core-avx*|ivybridge|haswell|broadwell)
3291                                                echo -xarch=avx           ;;
3292                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3293                     btver1)                    echo -xarch=amdsse4a      ;;
3294                     btver2|bdver*)             echo -xarch=avx           ;;
3295                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3296                     k8|opteron|athlon64|athlon-fx)
3297                                                echo -xarch=sse2a         ;;
3298                     athlon*)                   echo -xarch=pentium_proa  ;;
3299                 esac
3300                 ;;
3301             -std=c99)             echo -xc99              ;;
3302             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3303             -fPIC)                echo -KPIC -xcode=pic32 ;;
3304             -W*,*)                echo $flag              ;;
3305             -f*-*|-W*|-mimpure-text)                      ;;
3306             -shared)              echo -G                 ;;
3307             *)                    echo $flag              ;;
3308         esac
3309     done
3310 }
3311
3312 tms470_flags(){
3313     for flag; do
3314         case $flag in
3315             -march=*|-mcpu=*)
3316                 case "${flag#*=}" in
3317                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3318                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3319                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3320                     armv6*|arm11*)          echo -mv=6   ;;
3321                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3322                                             echo -mv=5e  ;;
3323                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3324                 esac
3325                 ;;
3326             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3327             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3328             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3329             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3330             -msoft-float)   echo --float_support=vfplib       ;;
3331             -O[0-3]|-mf=*)  echo $flag                        ;;
3332             -g)             echo -g -mn                       ;;
3333             -pds=*)         echo $flag                        ;;
3334             -D*|-I*)        echo $flag                        ;;
3335             --gcc|--abi=*)  echo $flag                        ;;
3336             -me)            echo $flag                        ;;
3337         esac
3338     done
3339 }
3340
3341 probe_cc(){
3342     pfx=$1
3343     _cc=$2
3344
3345     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3346     unset _ld_o _ldflags _ld_lib _ld_path
3347     unset _depflags _DEPCMD _DEPFLAGS
3348     _flags_filter=echo
3349
3350     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3351         true # no-op to avoid reading stdin in following checks
3352     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3353         _type=llvm_gcc
3354         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3355         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3356         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3357         _cflags_speed='-O3'
3358         _cflags_size='-Os'
3359     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3360         _type=gcc
3361         gcc_version=$($_cc --version | head -n1)
3362         gcc_basever=$($_cc -dumpversion)
3363         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3364         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3365         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3366         if ! $_cc -dumpversion | grep -q '^2\.'; then
3367             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3368         fi
3369         _cflags_speed='-O3'
3370         _cflags_size='-Os'
3371     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3372         _type=icc
3373         _ident=$($_cc --version | head -n1)
3374         _depflags='-MMD'
3375         _cflags_speed='-O3'
3376         _cflags_size='-Os'
3377         _cflags_noopt='-O1'
3378         _flags_filter=icc_flags
3379     elif $_cc -v 2>&1 | grep -q xlc; then
3380         _type=xlc
3381         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3382         _cflags_speed='-O5'
3383         _cflags_size='-O5 -qcompact'
3384     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3385         _type=ccc
3386         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3387         _DEPFLAGS='-M'
3388         _cflags_speed='-fast'
3389         _cflags_size='-O1'
3390         _flags_filter=ccc_flags
3391     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3392         test -d "$sysroot" || die "No valid sysroot specified."
3393         _type=armcc
3394         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3395         armcc_conf="$PWD/armcc.conf"
3396         $_cc --arm_linux_configure                 \
3397              --arm_linux_config_file="$armcc_conf" \
3398              --configure_sysroot="$sysroot"        \
3399              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3400              die "Error creating armcc configuration file."
3401         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3402         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3403         as_default="${cross_prefix}gcc"
3404         _depflags='-MMD'
3405         _cflags_speed='-O3'
3406         _cflags_size='-Os'
3407     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3408         _type=tms470
3409         _ident=$($_cc -version | head -n1 | tr -s ' ')
3410         _flags='--gcc --abi=eabi -me'
3411         _cc_e='-ppl -fe=$@'
3412         _cc_o='-fe=$@'
3413         _depflags='-ppa -ppd=$(@:.o=.d)'
3414         _cflags_speed='-O3 -mf=5'
3415         _cflags_size='-O3 -mf=2'
3416         _flags_filter=tms470_flags
3417     elif $_cc -v 2>&1 | grep -q clang; then
3418         _type=clang
3419         _ident=$($_cc --version | head -n1)
3420         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3421         _cflags_speed='-O3'
3422         _cflags_size='-Os'
3423     elif $_cc -V 2>&1 | grep -q Sun; then
3424         _type=suncc
3425         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3426         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3427         _DEPFLAGS='-xM1 -xc99'
3428         _ldflags='-std=c99'
3429         _cflags_speed='-O5'
3430         _cflags_size='-O5 -xspace'
3431         _flags_filter=suncc_flags
3432     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3433         _type=pathscale
3434         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3435         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3436         _cflags_speed='-O2'
3437         _cflags_size='-Os'
3438         _flags_filter='filter_out -Wdisabled-optimization'
3439     elif $_cc -v 2>&1 | grep -q Open64; then
3440         _type=open64
3441         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3442         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3443         _cflags_speed='-O2'
3444         _cflags_size='-Os'
3445         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3446     elif $_cc -V 2>&1 | grep -q Portland; then
3447         _type=pgi
3448         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3449         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3450         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3451         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3452         _cflags_noopt="-O"
3453         _flags_filter=pgi_flags
3454     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3455         _type=armasm
3456         _ident=$($_cc | head -n1)
3457         # 4509: "This form of conditional instruction is deprecated"
3458         _flags="-nologo -ignore 4509"
3459         _flags_filter=armasm_flags
3460     elif $_cc 2>&1 | grep -q Intel; then
3461         _type=icl
3462         _ident=$($cc 2>&1 | head -n1)
3463         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3464         # Not only is O3 broken on 13.x+ but it is slower on all previous
3465         # versions (tested) as well.
3466         _cflags_speed="-O2"
3467         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3468         if $_cc 2>&1 | grep -q Linker; then
3469             _ld_o='-out:$@'
3470         else
3471             _ld_o='-Fe$@'
3472         fi
3473         _cc_o='-Fo$@'
3474         _cc_e='-P'
3475         _flags_filter=icl_flags
3476         _ld_lib='lib%.a'
3477         _ld_path='-libpath:'
3478         # -Qdiag-error to make icl error when seeing certain unknown arguments
3479         _flags='-nologo -Qdiag-error:4044,10157'
3480         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3481         # with MSVC which enables it by default.
3482         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3483         if [ $pfx = hostcc ]; then
3484             append _cflags -Dsnprintf=_snprintf
3485         fi
3486         disable stripping
3487     elif $_cc 2>&1 | grep -q Microsoft; then
3488         _type=msvc
3489         _ident=$($cc 2>&1 | head -n1)
3490         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3491         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3492         _cflags_speed="-O2"
3493         _cflags_size="-O1"
3494         if $_cc 2>&1 | grep -q Linker; then
3495             _ld_o='-out:$@'
3496         else
3497             _ld_o='-Fe$@'
3498         fi
3499         _cc_o='-Fo$@'
3500         _cc_e='-P -Fi$@'
3501         _flags_filter=msvc_flags
3502         _ld_lib='lib%.a'
3503         _ld_path='-libpath:'
3504         _flags='-nologo'
3505         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3506         if [ $pfx = hostcc ]; then
3507             append _cflags -Dsnprintf=_snprintf
3508         fi
3509         disable stripping
3510     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3511         _type=cparser
3512         _ident=$($_cc --version | head -n1)
3513         _depflags='-MMD'
3514         _cflags_speed='-O4'
3515         _cflags_size='-O2'
3516         _flags_filter=cparser_flags
3517     fi
3518
3519     eval ${pfx}_type=\$_type
3520     eval ${pfx}_ident=\$_ident
3521 }
3522
3523 set_ccvars(){
3524     eval ${1}_C=\${_cc_c-\${${1}_C}}
3525     eval ${1}_E=\${_cc_e-\${${1}_E}}
3526     eval ${1}_O=\${_cc_o-\${${1}_O}}
3527
3528     if [ -n "$_depflags" ]; then
3529         eval ${1}_DEPFLAGS=\$_depflags
3530     else
3531         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3532         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3533         eval DEP${1}FLAGS=\$_flags
3534     fi
3535 }
3536
3537 probe_cc cc "$cc"
3538 cflags_filter=$_flags_filter
3539 cflags_speed=$_cflags_speed
3540 cflags_size=$_cflags_size
3541 cflags_noopt=$_cflags_noopt
3542 add_cflags $_flags $_cflags
3543 cc_ldflags=$_ldflags
3544 set_ccvars CC
3545
3546 probe_cc hostcc "$host_cc"
3547 host_cflags_filter=$_flags_filter
3548 add_host_cflags  $_flags $_cflags
3549 set_ccvars HOSTCC
3550
3551 test -n "$cc_type" && enable $cc_type ||
3552     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3553
3554 : ${as_default:=$cc}
3555 : ${dep_cc_default:=$cc}
3556 : ${ld_default:=$cc}
3557 : ${host_ld_default:=$host_cc}
3558 set_default ar as dep_cc ld host_ld windres
3559
3560 probe_cc as "$as"
3561 asflags_filter=$_flags_filter
3562 add_asflags $_flags $_cflags
3563 set_ccvars AS
3564
3565 probe_cc ld "$ld"
3566 ldflags_filter=$_flags_filter
3567 add_ldflags $_flags $_ldflags
3568 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3569 LD_O=${_ld_o-$LD_O}
3570 LD_LIB=${_ld_lib-$LD_LIB}
3571 LD_PATH=${_ld_path-$LD_PATH}
3572
3573 probe_cc hostld "$host_ld"
3574 host_ldflags_filter=$_flags_filter
3575 add_host_ldflags $_flags $_ldflags
3576 HOSTLD_O=${_ld_o-$HOSTLD_O}
3577
3578 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3579     probe_cc depcc "$dep_cc"
3580     CCDEP=${_DEPCMD:-$DEPCMD}
3581     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3582     DEPCCFLAGS=$_flags
3583 fi
3584
3585 if $ar 2>&1 | grep -q Microsoft; then
3586     arflags="-nologo"
3587     ar_o='-out:$@'
3588 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3589     arflags="rq"
3590     ar_o='$@'
3591 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3592     arflags='-Xany -r -c'
3593     ar_o='$@'
3594 else
3595     arflags="rc"
3596     ar_o='$@'
3597 fi
3598
3599 add_cflags $extra_cflags
3600 add_cxxflags $extra_cxxflags
3601 add_asflags $extra_cflags
3602
3603 if test -n "$sysroot"; then
3604     case "$cc_type" in
3605         gcc|llvm_gcc|clang)
3606             add_cppflags --sysroot="$sysroot"
3607             add_ldflags --sysroot="$sysroot"
3608 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3609             add_cppflags -isysroot "$sysroot"
3610             add_ldflags -isysroot "$sysroot"
3611         ;;
3612         tms470)
3613             add_cppflags -I"$sysinclude"
3614             add_ldflags  --sysroot="$sysroot"
3615         ;;
3616     esac
3617 fi
3618
3619 if test "$cpu" = host; then
3620     enabled cross_compile &&
3621         die "--cpu=host makes no sense when cross-compiling."
3622
3623     case "$cc_type" in
3624         gcc|llvm_gcc)
3625             check_native(){
3626                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3627                 sed -n "/cc1.*$1=/{
3628                             s/.*$1=\\([^ ]*\\).*/\\1/
3629                             p
3630                             q
3631                         }" $TMPE
3632             }
3633             cpu=$(check_native -march || check_native -mcpu)
3634         ;;
3635     esac
3636
3637     test "${cpu:-host}" = host &&
3638         die "--cpu=host not supported with compiler $cc"
3639 fi
3640
3641 # Deal with common $arch aliases
3642 case "$arch" in
3643     aarch64|arm64)
3644         arch="aarch64"
3645     ;;
3646     arm*|iPad*|iPhone*)
3647         arch="arm"
3648     ;;
3649     mips*|IP*)
3650         arch="mips"
3651     ;;
3652     parisc*|hppa*)
3653         arch="parisc"
3654     ;;
3655     "Power Macintosh"|ppc*|powerpc*)
3656         arch="ppc"
3657     ;;
3658     s390|s390x)
3659         arch="s390"
3660     ;;
3661     sh4|sh)
3662         arch="sh4"
3663     ;;
3664     sun4u|sparc*)
3665         arch="sparc"
3666     ;;
3667     tilegx|tile-gx)
3668         arch="tilegx"
3669     ;;
3670     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3671         arch="x86"
3672     ;;
3673 esac
3674
3675 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3676 enable $arch
3677
3678 # Add processor-specific flags
3679 if enabled aarch64; then
3680
3681     case $cpu in
3682         armv*)
3683             cpuflags="-march=$cpu"
3684         ;;
3685         *)
3686             cpuflags="-mcpu=$cpu"
3687         ;;
3688     esac
3689
3690 elif enabled alpha; then
3691
3692     cpuflags="-mcpu=$cpu"
3693
3694 elif enabled arm; then
3695
3696     check_arm_arch() {
3697         check_cpp_condition stddef.h \
3698             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3699             $cpuflags
3700     }
3701
3702     probe_arm_arch() {
3703         if   check_arm_arch 4;        then echo armv4;
3704         elif check_arm_arch 4T;       then echo armv4t;
3705         elif check_arm_arch 5;        then echo armv5;
3706         elif check_arm_arch 5E;       then echo armv5e;
3707         elif check_arm_arch 5T;       then echo armv5t;
3708         elif check_arm_arch 5TE;      then echo armv5te;
3709         elif check_arm_arch 5TEJ;     then echo armv5te;
3710         elif check_arm_arch 6;        then echo armv6;
3711         elif check_arm_arch 6J;       then echo armv6j;
3712         elif check_arm_arch 6K;       then echo armv6k;
3713         elif check_arm_arch 6Z;       then echo armv6z;
3714         elif check_arm_arch 6ZK;      then echo armv6zk;
3715         elif check_arm_arch 6T2;      then echo armv6t2;
3716         elif check_arm_arch 7;        then echo armv7;
3717         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3718         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3719         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3720         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3721         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3722         fi
3723     }
3724
3725     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3726
3727     case $cpu in
3728         armv*)
3729             cpuflags="-march=$cpu"
3730             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3731         ;;
3732         *)
3733             cpuflags="-mcpu=$cpu"
3734             case $cpu in
3735                 cortex-a*)                               subarch=armv7a  ;;
3736                 cortex-r*)                               subarch=armv7r  ;;
3737                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3738                 arm11*)                                  subarch=armv6   ;;
3739                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3740                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3741                 *)                             subarch=$(probe_arm_arch) ;;
3742             esac
3743         ;;
3744     esac
3745
3746     case "$subarch" in
3747         armv5t*)    enable fast_clz                ;;
3748         armv[6-8]*)
3749             enable fast_clz
3750             disabled fast_unaligned || enable fast_unaligned
3751             ;;
3752     esac
3753
3754 elif enabled avr32; then
3755
3756     case $cpu in
3757         ap7[02]0[0-2])
3758             subarch="avr32_ap"
3759             cpuflags="-mpart=$cpu"
3760         ;;
3761         ap)
3762             subarch="avr32_ap"
3763             cpuflags="-march=$cpu"
3764         ;;
3765         uc3[ab]*)
3766             subarch="avr32_uc"
3767             cpuflags="-mcpu=$cpu"
3768         ;;
3769         uc)
3770             subarch="avr32_uc"
3771             cpuflags="-march=$cpu"
3772         ;;
3773     esac
3774
3775 elif enabled bfin; then
3776
3777     cpuflags="-mcpu=$cpu"
3778
3779 elif enabled mips; then
3780
3781     cpuflags="-march=$cpu"
3782
3783     case $cpu in
3784         24kc)
3785             disable mipsfpu
3786             disable mipsdspr1
3787             disable mipsdspr2
3788         ;;
3789         24kf*)
3790             disable mipsdspr1
3791             disable mipsdspr2
3792         ;;
3793         24kec|34kc|1004kc)
3794             disable mipsfpu
3795             disable mipsdspr2
3796         ;;
3797         24kef*|34kf*|1004kf*)
3798             disable mipsdspr2
3799         ;;
3800         74kc)
3801             disable mipsfpu
3802         ;;
3803     esac
3804
3805 elif enabled ppc; then
3806
3807     disable ldbrx
3808     disable vsx
3809
3810     case $(tolower $cpu) in
3811         601|ppc601|powerpc601)
3812             cpuflags="-mcpu=601"
3813             disable altivec
3814         ;;
3815         603*|ppc603*|powerpc603*)
3816             cpuflags="-mcpu=603"
3817             disable altivec
3818         ;;
3819         604*|ppc604*|powerpc604*)
3820             cpuflags="-mcpu=604"
3821             disable altivec
3822         ;;
3823         g3|75*|ppc75*|powerpc75*)
3824             cpuflags="-mcpu=750"
3825             disable altivec
3826         ;;
3827         g4|745*|ppc745*|powerpc745*)
3828             cpuflags="-mcpu=7450"
3829         ;;
3830         74*|ppc74*|powerpc74*)
3831             cpuflags="-mcpu=7400"
3832         ;;
3833         g5|970|ppc970|powerpc970)
3834             cpuflags="-mcpu=970"
3835         ;;
3836         power[3-8]*)
3837             cpuflags="-mcpu=$cpu"
3838         ;;
3839         cell)
3840             cpuflags="-mcpu=cell"
3841             enable ldbrx
3842         ;;
3843         e500mc)
3844             cpuflags="-mcpu=e500mc"
3845             disable altivec
3846         ;;
3847         e500v2)
3848             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3849             disable altivec
3850             disable dcbzl
3851         ;;
3852         e500)
3853             cpuflags="-mcpu=8540 -mhard-float"
3854             disable altivec
3855             disable dcbzl
3856         ;;
3857     esac
3858
3859 elif enabled sparc; then
3860
3861     case $cpu in
3862         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3863             cpuflags="-mcpu=$cpu"
3864         ;;
3865         ultrasparc*|niagara[234])
3866             cpuflags="-mcpu=$cpu"
3867         ;;
3868     esac
3869
3870 elif enabled x86; then
3871
3872     case $cpu in
3873         i[345]86|pentium)
3874             cpuflags="-march=$cpu"
3875             disable i686
3876             disable mmx
3877         ;;
3878         # targets that do NOT support nopl and conditional mov (cmov)
3879         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3880             cpuflags="-march=$cpu"
3881             disable i686
3882         ;;
3883         # targets that do support nopl and conditional mov (cmov)
3884         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3885         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3886             cpuflags="-march=$cpu"
3887             enable i686
3888             enable fast_cmov
3889         ;;
3890         # targets that do support conditional mov but on which it's slow
3891         pentium4|pentium4m|prescott|nocona)
3892             cpuflags="-march=$cpu"
3893             enable i686
3894             disable fast_cmov
3895         ;;
3896     esac
3897
3898 fi
3899
3900 if [ "$cpu" != generic ]; then
3901     add_cflags  $cpuflags
3902     add_asflags $cpuflags
3903 fi
3904
3905 # compiler sanity check
3906 check_exec <<EOF
3907 int main(void){ return 0; }
3908 EOF
3909 if test "$?" != 0; then
3910     echo "$cc is unable to create an executable file."
3911     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3912         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3913         echo "Only do this if you know what cross compiling means."
3914     fi
3915     die "C compiler test failed."
3916 fi
3917
3918 add_cppflags -D_ISOC99_SOURCE
3919 add_cxxflags -D__STDC_CONSTANT_MACROS
3920 check_cflags -std=c99
3921 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3922 #include <stdlib.h>
3923 EOF
3924 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3925 #include <stdlib.h>
3926 EOF
3927
3928 add_host_cppflags -D_ISOC99_SOURCE
3929 check_host_cflags -std=c99
3930 check_host_cflags -Wall
3931 check_host_cflags -O3
3932
3933 check_64bit(){
3934     arch32=$1
3935     arch64=$2
3936     expr=$3
3937     check_code cc "" "int test[2*($expr) - 1]" &&
3938         subarch=$arch64 || subarch=$arch32
3939 }
3940
3941 case "$arch" in
3942     aarch64|alpha|ia64)
3943         spic=$shared
3944     ;;
3945     mips)
3946         check_64bit mips mips64 '_MIPS_SIM > 1'
3947         spic=$shared
3948     ;;
3949     parisc)
3950         check_64bit parisc parisc64 'sizeof(void *) > 4'
3951         spic=$shared
3952     ;;
3953     ppc)
3954         check_64bit ppc ppc64 'sizeof(void *) > 4'
3955         spic=$shared
3956     ;;
3957     s390)
3958         check_64bit s390 s390x 'sizeof(void *) > 4'
3959         spic=$shared
3960     ;;
3961     sparc)
3962         check_64bit sparc sparc64 'sizeof(void *) > 4'
3963         spic=$shared
3964     ;;
3965     x86)
3966         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3967         # Treat x32 as x64 for now. Note it also needs spic=$shared
3968         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3969             subarch=x86_64
3970         if test "$subarch" = "x86_64"; then
3971             spic=$shared
3972         fi
3973     ;;
3974     ppc)
3975         check_cc <<EOF && subarch="ppc64"
3976         int test[(int)sizeof(char*) - 7];
3977 EOF
3978     ;;
3979 esac
3980
3981 enable $subarch
3982 enabled spic && enable_weak pic
3983
3984 # OS specific
3985 case $target_os in
3986     aix)
3987         SHFLAGS=-shared
3988         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3989         enabled shared && add_ldflags -Wl,-brtl
3990         ;;
3991     android)
3992         disable symver
3993         SLIB_INSTALL_NAME='$(SLIBNAME)'
3994         SLIB_INSTALL_LINKS=
3995         # soname not set on purpose
3996         SHFLAGS=-shared
3997         ;;
3998     haiku)
3999         prefix_default="/boot/common"
4000         network_extralibs="-lnetwork"
4001         host_libs=
4002         ;;
4003     sunos)
4004         SHFLAGS='-shared -Wl,-h,$$(@F)'
4005         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4006         network_extralibs="-lsocket -lnsl"
4007         # When using suncc to build, the Solaris linker will mark
4008         # an executable with each instruction set encountered by
4009         # the Solaris assembler.  As our libraries contain their own
4010         # guards for processor-specific code, instead suppress
4011         # generation of the HWCAPS ELF section on Solaris x86 only.
4012         enabled_all suncc x86 &&
4013             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4014             add_ldflags -Wl,-M,mapfile
4015         nm_default='nm -P -g'
4016         ;;
4017     netbsd)
4018         disable symver
4019         oss_indev_extralibs="-lossaudio"
4020         oss_outdev_extralibs="-lossaudio"
4021         enabled gcc || check_ldflags -Wl,-zmuldefs
4022         ;;
4023     openbsd|bitrig)
4024         disable symver
4025         SHFLAGS='-shared'
4026         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4027         SLIB_INSTALL_LINKS=
4028         oss_indev_extralibs="-lossaudio"
4029         oss_outdev_extralibs="-lossaudio"
4030         ;;
4031     dragonfly)
4032         disable symver
4033         ;;
4034     freebsd)
4035         ;;
4036     bsd/os)
4037         add_extralibs -lpoll -lgnugetopt
4038         strip="strip -d"
4039         ;;
4040     darwin)
4041         enabled ppc && add_asflags -force_cpusubtype_ALL
4042         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4043         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4044         strip="${strip} -x"
4045         add_ldflags -Wl,-dynamic,-search_paths_first
4046         SLIBSUF=".dylib"
4047         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4048         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4049         objformat="macho"
4050         enabled x86_64 && objformat="macho64"
4051         enabled_any pic shared ||
4052             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4053         ;;
4054     mingw32*)
4055         if test $target_os = "mingw32ce"; then
4056             disable network
4057         else
4058             target_os=mingw32
4059         fi
4060         LIBTARGET=i386
4061         if enabled x86_64; then
4062             LIBTARGET="i386:x86-64"
4063         elif enabled arm; then
4064             LIBTARGET=arm-wince
4065         fi
4066         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4067         check_ldflags -Wl,--nxcompat
4068         check_ldflags -Wl,--dynamicbase
4069         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4070         shlibdir_default="$bindir_default"
4071         SLIBPREF=""
4072         SLIBSUF=".dll"
4073         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4074         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4075         dlltool="${cross_prefix}dlltool"
4076         if check_cmd lib.exe -list; then
4077             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4078             if enabled x86_64; then
4079                 LIBTARGET=x64
4080             fi
4081         elif check_cmd $dlltool --version; then
4082             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4083         fi
4084         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4085         SLIB_INSTALL_LINKS=
4086         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4087         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4088         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4089         objformat="win32"
4090         ranlib=:
4091         enable dos_paths
4092         ;;
4093     win32|win64)
4094         disable symver
4095         if enabled shared; then
4096             # Link to the import library instead of the normal static library
4097             # for shared libs.
4098             LD_LIB='%.lib'
4099             # Cannot build both shared and static libs with MSVC or icl.
4100             disable static
4101         fi
4102         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4103         shlibdir_default="$bindir_default"
4104         SLIBPREF=""
4105         SLIBSUF=".dll"
4106         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4107         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4108         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4109         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4110         SLIB_INSTALL_LINKS=
4111         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4112         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4113         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4114         objformat="win32"
4115         ranlib=:
4116         enable dos_paths
4117         ;;
4118     cygwin*)
4119         target_os=cygwin
4120         shlibdir_default="$bindir_default"
4121         SLIBPREF="cyg"
4122         SLIBSUF=".dll"
4123         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4124         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4125         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4126         SLIB_INSTALL_LINKS=
4127         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4128         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4129         objformat="win32"
4130         enable dos_paths
4131         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4132         ;;
4133     *-dos|freedos|opendos)
4134         network_extralibs="-lsocket"
4135         objformat="coff"
4136         enable dos_paths
4137         add_cppflags -U__STRICT_ANSI__
4138         ;;
4139     linux)
4140         enable dv1394
4141         ;;
4142     irix*)
4143         target_os=irix
4144         ranlib="echo ignoring ranlib"
4145         ;;
4146     os/2*)
4147         strip="lxlite -CS"
4148         ln_s="cp -f"
4149         objformat="aout"
4150         add_cppflags -D_GNU_SOURCE
4151         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4152         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4153         LIBSUF="_s.a"
4154         SLIBPREF=""
4155         SLIBSUF=".dll"
4156         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4157         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4158         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4159             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4160             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4161             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4162             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4163             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4164         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4165             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4166         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4167         enable dos_paths
4168         enable_weak os2threads
4169         ;;
4170     gnu/kfreebsd)
4171         add_cppflags -D_BSD_SOURCE
4172         ;;
4173     gnu)
4174         ;;
4175     qnx)
4176         add_cppflags -D_QNX_SOURCE
4177         network_extralibs="-lsocket"
4178         ;;
4179     symbian)
4180         SLIBSUF=".dll"
4181         enable dos_paths
4182         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4183         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4184         add_ldflags -Wl,--target1-abs,--no-undefined \
4185                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4186                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4187         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4188                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4189                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4190         ;;
4191     osf1)
4192         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4193         ;;
4194     minix)
4195         ;;
4196     plan9)
4197         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4198                      -D_REENTRANT_SOURCE        \
4199                      -D_RESEARCH_SOURCE         \
4200                      -DFD_SETSIZE=96            \
4201                      -DHAVE_SOCK_OPTS
4202         add_compat strtod.o strtod=avpriv_strtod
4203         network_extralibs='-lbsd'
4204         exeobjs=compat/plan9/main.o
4205         disable ffserver
4206         cp_f='cp'
4207         ;;
4208     none)
4209         ;;
4210     *)
4211         die "Unknown OS '$target_os'."
4212         ;;
4213 esac
4214
4215 # determine libc flavour
4216
4217 probe_libc(){
4218     pfx=$1
4219     pfx_no_=${pfx%_}
4220     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4221     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4222         eval ${pfx}libc_type=uclibc
4223         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4224     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4225         eval ${pfx}libc_type=glibc
4226         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4227     # MinGW headers can be installed on Cygwin, so check for newlib first.
4228     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4229         eval ${pfx}libc_type=newlib
4230         add_${pfx}cppflags -U__STRICT_ANSI__
4231     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4232     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4233         eval ${pfx}libc_type=mingw64
4234         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4235             add_compat msvcrt/snprintf.o
4236             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4237         fi
4238         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4239         eval test \$${pfx_no_}cc_type = "gcc" &&
4240             add_${pfx}cppflags -D__printf__=__gnu_printf__
4241     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4242          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4243         eval ${pfx}libc_type=mingw32
4244         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4245             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4246             die "ERROR: MinGW32 runtime version must be >= 3.15."
4247         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4248         eval test \$${pfx_no_}cc_type = "gcc" &&
4249             add_${pfx}cppflags -D__printf__=__gnu_printf__
4250     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4251         eval ${pfx}libc_type=msvcrt
4252         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4253         # 0x601 by default unless something else is set by the user.
4254         # This can easily lead to us detecting functions only present
4255         # in such new versions and producing binaries requiring windows 7.0.
4256         # Therefore explicitly set the default to XP unless the user has
4257         # set something else on the command line.
4258         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4259             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4260     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4261         eval ${pfx}libc_type=klibc
4262     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4263         eval ${pfx}libc_type=bionic
4264     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4265         eval ${pfx}libc_type=solaris
4266         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4267     fi
4268     check_${pfx}cc <<EOF
4269 #include <time.h>
4270 void *v = localtime_r;
4271 EOF
4272 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4273 #include <time.h>
4274 void *v = localtime_r;
4275 EOF
4276
4277 }
4278
4279 probe_libc
4280 test -n "$libc_type" && enable libc_$libc_type
4281 probe_libc host_
4282 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4283
4284 case $libc_type in
4285     bionic)
4286         add_compat strtod.o strtod=avpriv_strtod
4287         ;;
4288     msvcrt)
4289         add_compat strtod.o strtod=avpriv_strtod
4290         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4291                                      _snprintf=avpriv_snprintf  \
4292                                      vsnprintf=avpriv_vsnprintf
4293         ;;
4294 esac
4295
4296 # hacks for compiler/libc/os combinations
4297
4298 if enabled_all tms470 libc_glibc; then
4299     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4300     add_cppflags -D__USER_LABEL_PREFIX__=
4301     add_cppflags -D__builtin_memset=memset
4302     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4303     add_cflags   -pds=48    # incompatible redefinition of macro
4304 fi
4305
4306 if enabled_all ccc libc_glibc; then
4307     add_ldflags -Wl,-z,now  # calls to libots crash without this
4308 fi
4309
4310 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4311     add_cppflags '-I\$(SRC_PATH)/compat/float'
4312
4313 esc(){
4314     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4315 }
4316
4317 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4318
4319 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4320
4321 set_default $PATHS_LIST
4322 set_default nm
4323
4324 # we need to build at least one lib type
4325 if ! enabled_any static shared; then
4326     cat <<EOF
4327 At least one library type must be built.
4328 Specify --enable-static to build the static libraries or --enable-shared to
4329 build the shared libraries as well. To only build the shared libraries specify
4330 --disable-static in addition to --enable-shared.
4331 EOF
4332     exit 1;
4333 fi
4334
4335 die_license_disabled() {
4336     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4337 }
4338
4339 die_license_disabled_gpl() {
4340     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4341 }
4342
4343 die_license_disabled gpl frei0r
4344 die_license_disabled gpl libcdio
4345 die_license_disabled gpl libsmbclient
4346 die_license_disabled gpl libutvideo
4347 die_license_disabled gpl libvidstab
4348 die_license_disabled gpl libx264
4349 die_license_disabled gpl libx265
4350 die_license_disabled gpl libxavs
4351 die_license_disabled gpl libxvid
4352 die_license_disabled gpl libzvbi
4353 die_license_disabled gpl x11grab
4354
4355 die_license_disabled nonfree libaacplus
4356 die_license_disabled nonfree libfaac
4357 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4358 enabled gpl && die_license_disabled_gpl nonfree openssl
4359
4360 die_license_disabled version3 libopencore_amrnb
4361 die_license_disabled version3 libopencore_amrwb
4362 die_license_disabled version3 libsmbclient
4363 die_license_disabled version3 libvo_aacenc
4364 die_license_disabled version3 libvo_amrwbenc
4365
4366 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4367
4368 disabled optimizations || check_cflags -fomit-frame-pointer
4369
4370 enable_weak_pic() {
4371     disabled pic && return
4372     enable pic
4373     add_cppflags -DPIC
4374     case "$target_os" in
4375     mingw*|cygwin*)
4376         ;;
4377     *)
4378         add_cflags -fPIC
4379         ;;
4380     esac
4381     add_asflags  -fPIC
4382 }
4383
4384 enabled pic && enable_weak_pic
4385
4386 check_cc <<EOF || die "Symbol mangling check failed."
4387 int ff_extern;
4388 EOF
4389 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4390 extern_prefix=${sym%%ff_extern*}
4391
4392 check_cc <<EOF && enable_weak inline_asm
4393 void foo(void) { __asm__ volatile ("" ::); }
4394 EOF
4395
4396 _restrict=
4397 for restrict_keyword in restrict __restrict__ __restrict; do
4398     check_cc <<EOF && _restrict=$restrict_keyword && break
4399 void foo(char * $restrict_keyword p);
4400 EOF
4401 done
4402
4403 check_cc <<EOF && enable pragma_deprecated
4404 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4405 EOF
4406
4407 check_cc <<EOF && enable attribute_packed
4408 struct { int x; } __attribute__((packed)) x;
4409 EOF
4410
4411 check_cc <<EOF && enable attribute_may_alias
4412 union { int x; } __attribute__((may_alias)) x;
4413 EOF
4414
4415 check_cc <<EOF || die "endian test failed"
4416 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4417 EOF
4418 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4419
4420 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4421     if ! enabled bigendian && enabled altivec ;then
4422         enable vsx
4423     fi
4424 fi
4425
4426 check_gas() {
4427     log "check_gas using '$as' as AS"
4428     # :vararg is used on aarch64, arm and ppc altivec
4429     check_as <<EOF || return 1
4430 .macro m n, y:vararg=0
4431 \n: .int \y
4432 .endm
4433 m x
4434 EOF
4435     # .altmacro is only used in arm asm
4436     ! enabled arm || check_as <<EOF || return 1
4437 .altmacro
4438 EOF
4439     enable gnu_as
4440     return 0
4441 }
4442
4443 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4444     nogas=:
4445     enabled_any arm aarch64 && nogas=die
4446     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4447     as_noop=-v
4448
4449     case $as_type in
4450         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4451         gcc)  gaspp_as_type=gas ;;
4452         *)    gaspp_as_type=$as_type ;;
4453     esac
4454
4455     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4456
4457     test "${as#*gas-preprocessor.pl}" != "$as" ||
4458     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4459         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4460
4461     if ! check_gas ; then
4462         as=${gas:=$as}
4463         check_gas || \
4464             $nogas "GNU assembler not found, install/update gas-preprocessor"
4465     fi
4466
4467     check_as <<EOF && enable as_func
4468 .func test
4469 .endfunc
4470 EOF
4471 fi
4472
4473 check_inline_asm inline_asm_labels '"1:\n"'
4474
4475 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4476
4477 if enabled aarch64; then
4478     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4479     # internal assembler in clang 3.3 does not support this instruction
4480     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4481     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4482
4483     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4484
4485 elif enabled alpha; then
4486
4487     check_cflags -mieee
4488
4489 elif enabled arm; then
4490
4491     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4492 float func(float a, float b){ return a+b; }
4493 EOF
4494
4495     enabled thumb && check_cflags -mthumb || check_cflags -marm
4496
4497     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4498         enable vfp_args
4499     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4500         case "${cross_prefix:-$cc}" in
4501             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4502             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4503 __asm__ (".eabi_attribute 28, 1");
4504 int main(void) { return 0; }
4505 EOF
4506         esac
4507         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4508     fi
4509
4510     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4511     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4512     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4513     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4514     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4515     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4516     enabled setend  && check_insn setend  'setend be'
4517
4518     [ $target_os = linux ] || [ $target_os = android ] ||
4519         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4520             $ARCH_EXT_LIST_ARM
4521
4522     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4523
4524     check_as <<EOF && enable as_dn_directive
4525 ra .dn d0.i16
4526 .unreq ra
4527 EOF
4528
4529     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4530
4531 elif enabled mips; then
4532
4533     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4534     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4535      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4536     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4537      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4538     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4539      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4540     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4541      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4542
4543 elif enabled parisc; then
4544
4545     if enabled gcc; then
4546         case $($cc -dumpversion) in
4547             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4548         esac
4549     fi
4550
4551 elif enabled ppc; then
4552
4553     enable local_aligned_8 local_aligned_16 local_aligned_32
4554
4555     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4556     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4557     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4558     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4559
4560     # AltiVec flags: The FSF version of GCC differs from the Apple version
4561     if enabled altivec; then
4562         check_cflags -maltivec -mabi=altivec &&
4563         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4564         check_cflags -faltivec
4565
4566         # check if our compiler supports Motorola AltiVec C API
4567         check_cc <<EOF || disable altivec
4568 $inc_altivec_h
4569 int main(void) {
4570     vector signed int v1 = (vector signed int) { 0 };
4571     vector signed int v2 = (vector signed int) { 1 };
4572     v1 = vec_add(v1, v2);
4573     return 0;
4574 }
4575 EOF
4576
4577         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4578     fi
4579
4580     if enabled vsx; then
4581         check_cflags -mvsx
4582     fi
4583 elif enabled x86; then
4584
4585     check_builtin rdtsc    intrin.h   "__rdtsc()"
4586     check_builtin mm_empty mmintrin.h "_mm_empty()"
4587
4588     enable local_aligned_8 local_aligned_16 local_aligned_32
4589
4590     # check whether EBP is available on x86
4591     # As 'i' is stored on the stack, this program will crash
4592     # if the base pointer is used to access it because the
4593     # base pointer is cleared in the inline assembly code.
4594     check_exec_crash <<EOF && enable ebp_available
4595 volatile int i=0;
4596 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4597 return i;
4598 EOF
4599
4600     # check whether EBX is available on x86
4601     check_inline_asm ebx_available '""::"b"(0)' &&
4602         check_inline_asm ebx_available '"":::"%ebx"'
4603
4604     # check whether xmm clobbers are supported
4605     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4606
4607     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4608         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4609
4610     # check whether binutils is new enough to compile SSSE3/MMXEXT
4611     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4612     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4613
4614     if ! disabled_any asm mmx yasm; then
4615         if check_cmd $yasmexe --version; then
4616             enabled x86_64 && yasm_extra="-m amd64"
4617             yasm_debug="-g dwarf2"
4618         elif check_cmd nasm -v; then
4619             yasmexe=nasm
4620             yasm_debug="-g -F dwarf"
4621             if enabled x86_64; then
4622                 case "$objformat" in
4623                     elf)   objformat=elf64 ;;
4624                     win32) objformat=win64 ;;
4625                 esac
4626             fi
4627         fi
4628
4629         YASMFLAGS="-f $objformat $yasm_extra"
4630         enabled pic               && append YASMFLAGS "-DPIC"
4631         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4632         case "$objformat" in
4633             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4634         esac
4635
4636         check_yasm "movbe ecx, [5]" && enable yasm ||
4637             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4638         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4639         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4640         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4641         check_yasm "CPU amdnop" || disable cpunop
4642     fi
4643
4644     case "$cpu" in
4645         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4646             disable fast_clz
4647         ;;
4648     esac
4649
4650 fi
4651
4652 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4653
4654 check_ldflags -Wl,--as-needed
4655 check_ldflags -Wl,-z,noexecstack
4656
4657 if check_func dlopen; then
4658     ldl=
4659 elif check_func dlopen -ldl; then
4660     ldl=-ldl
4661 fi
4662
4663 frei0r_filter_extralibs='$ldl'
4664 frei0r_src_filter_extralibs='$ldl'
4665 ladspa_filter_extralibs='$ldl'
4666
4667 if ! disabled network; then
4668     check_func getaddrinfo $network_extralibs
4669     check_func getservbyport $network_extralibs
4670     check_func inet_aton $network_extralibs
4671
4672     check_type netdb.h "struct addrinfo"
4673     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4674     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4675     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4676     check_type poll.h "struct pollfd"
4677     check_type netinet/sctp.h "struct sctp_event_subscribe"
4678     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4679     check_type netinet/in.h "struct sockaddr_in6"
4680     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4681     check_type "sys/types.h sys/socket.h" socklen_t
4682
4683     # Prefer arpa/inet.h over winsock2
4684     if check_header arpa/inet.h ; then
4685         check_func closesocket
4686     elif check_header winsock2.h ; then
4687         check_func_headers winsock2.h closesocket -lws2 &&
4688             network_extralibs="-lws2" ||
4689         { check_func_headers winsock2.h closesocket -lws2_32 &&
4690             network_extralibs="-lws2_32"; } || disable winsock2_h network
4691         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4692
4693         check_type ws2tcpip.h socklen_t
4694         check_type ws2tcpip.h "struct addrinfo"
4695         check_type ws2tcpip.h "struct group_source_req"
4696         check_type ws2tcpip.h "struct ip_mreq_source"
4697         check_type ws2tcpip.h "struct ipv6_mreq"
4698         check_type winsock2.h "struct pollfd"
4699         check_struct winsock2.h "struct sockaddr" sa_len
4700         check_type ws2tcpip.h "struct sockaddr_in6"
4701         check_type ws2tcpip.h "struct sockaddr_storage"
4702     else
4703         disable network
4704     fi
4705 fi
4706
4707 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4708 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4709 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4710 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4711 check_builtin sarestart signal.h "SA_RESTART"
4712 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4713
4714 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4715 check_func  ${malloc_prefix}memalign            && enable memalign
4716 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4717
4718 check_func  access
4719 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4720 check_func  fcntl
4721 check_func  fork
4722 check_func  gethrtime
4723 check_func  getopt
4724 check_func  getrusage
4725 check_func  gettimeofday
4726 check_func  gmtime_r
4727 check_func  isatty
4728 check_func  localtime_r
4729 check_func  mach_absolute_time
4730 check_func  mkstemp
4731 check_func  mmap
4732 check_func  mprotect
4733 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4734 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4735 check_func  sched_getaffinity
4736 check_func  setrlimit
4737 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4738 check_func  strerror_r
4739 check_func  sysconf
4740 check_func  sysctl
4741 check_func  usleep
4742
4743 check_func_headers conio.h kbhit
4744 check_func_headers io.h setmode
4745 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4746 check_func_headers stdlib.h getenv
4747
4748 check_func_headers windows.h CoTaskMemFree -lole32
4749 check_func_headers windows.h GetProcessAffinityMask
4750 check_func_headers windows.h GetProcessTimes
4751 check_func_headers windows.h GetSystemTimeAsFileTime
4752 check_func_headers windows.h MapViewOfFile
4753 check_func_headers windows.h MoveFileExA
4754 check_func_headers windows.h PeekNamedPipe
4755 check_func_headers windows.h SetConsoleTextAttribute
4756 check_func_headers windows.h Sleep
4757 check_func_headers windows.h VirtualAlloc
4758 check_struct windows.h "CONDITION_VARIABLE" Ptr
4759 check_func_headers glob.h glob
4760 enabled xlib &&
4761     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4762
4763 check_header cl/cl.h
4764 check_header direct.h
4765 check_header dlfcn.h
4766 check_header dxva.h
4767 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4768 check_header io.h
4769 check_header libcrystalhd/libcrystalhd_if.h
4770 check_header mach/mach_time.h
4771 check_header malloc.h
4772 check_header net/udplite.h
4773 check_header poll.h
4774 check_header sys/mman.h
4775 check_header sys/param.h
4776 check_header sys/resource.h
4777 check_header sys/select.h
4778 check_header sys/time.h
4779 check_header sys/un.h
4780 check_header termios.h
4781 check_header unistd.h
4782 check_header vdpau/vdpau.h
4783 check_header vdpau/vdpau_x11.h
4784 check_header VideoDecodeAcceleration/VDADecoder.h
4785 check_header windows.h
4786 check_header X11/extensions/XvMClib.h
4787 check_header asm/types.h
4788
4789 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4790 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4791 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4792
4793 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4794
4795 if ! disabled w32threads && ! enabled pthreads; then
4796     check_func_headers "windows.h process.h" _beginthreadex &&
4797         enable w32threads || disable w32threads
4798 fi
4799
4800 # check for some common methods of building with pthread support
4801 # do this before the optional library checks as some of them require pthreads
4802 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4803     enable pthreads
4804     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4805         add_cflags -pthread
4806         add_extralibs -pthread
4807     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4808         add_cflags -pthreads
4809         add_extralibs -pthreads
4810     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4811         add_cflags -ldl -pthread
4812         add_extralibs -ldl -pthread
4813     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4814         add_extralibs -lpthreadGC2
4815     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4816         :
4817     elif ! check_func pthread_join && ! check_func pthread_create; then
4818         disable pthreads
4819     fi
4820     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4821 fi
4822
4823
4824 if enabled pthreads; then
4825   check_func pthread_cancel
4826 fi
4827
4828 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4829 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4830 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4831
4832 check_lib math.h sin -lm && LIBM="-lm"
4833 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4834
4835 atan2f_args=2
4836 ldexpf_args=2
4837 powf_args=2
4838
4839 for func in $MATH_FUNCS; do
4840     eval check_mathfunc $func \${${func}_args:-1}
4841 done
4842
4843 # these are off by default, so fail if requested and not available
4844 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4845 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4846                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4847                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4848 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4849 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4850 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4851 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4852 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4853 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4854 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4855 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4856 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4857 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4858                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4859                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4860 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4861 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4862 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4863 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"
4864 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4865 enabled fontconfig        && enable libfontconfig
4866 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4867 enabled libfreetype       && require_libfreetype
4868 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4869 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4870 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4871                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4872                                done || die "ERROR: libgsm not found"; }
4873 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4874 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
4875 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4876 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4877 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4878 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4879 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4880 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
4881                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4882                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4883                                die "ERROR: libopenjpeg not found"; }
4884 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4885 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
4886 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4887 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4888 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4889 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4890 enabled libsmbclient      && { check_pkg_config smbclient libsmbclient.h smbc_init ||
4891                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
4892 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4893 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4894 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4895 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4896     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4897     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4898 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4899 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4900                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4901                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4902 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4903 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4904 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4905 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4906 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4907 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4908 enabled libvpx            && {
4909     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4910                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4911     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 ||
4912                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4913     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4914     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; } }
4915 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4916 enabled libwebp           && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
4917 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
4918                                { require libx264 x264.h x264_encoder_encode -lx264 &&
4919                                  warn "using libx264 without pkg-config"; } } &&
4920                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4921                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4922 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4923                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4924                                die "ERROR: libx265 version must be >= 17."; }
4925 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4926 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4927 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4928 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4929 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4930                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4931                                die "ERROR: openal not found"; } &&
4932                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4933                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4934 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4935                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4936                                die "ERROR: opencl not found"; } &&
4937                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4938                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4939                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4940 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4941                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4942                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4943                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4944                                die "ERROR: opengl not found."
4945                              }
4946 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4947                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4948                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4949                                die "ERROR: openssl not found"; }
4950 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4951
4952 if enabled gnutls; then
4953     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4954     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4955 fi
4956
4957 # libdc1394 check
4958 if enabled libdc1394; then
4959     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4960         enable libdc1394_2; } ||
4961     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4962         enable libdc1394_1; } ||
4963     die "ERROR: No version of libdc1394 found "
4964 fi
4965 if ! disabled sdl; then
4966     SDL_CONFIG="${cross_prefix}sdl-config"
4967     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4968         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4969         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4970         enable sdl
4971     else
4972         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4973             sdl_cflags=$("${SDL_CONFIG}" --cflags)
4974             sdl_libs=$("${SDL_CONFIG}" --libs)
4975             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4976             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4977             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4978             enable sdl
4979         elif enabled sdl ; then
4980             die "ERROR: SDL not found"
4981         else
4982             disable sdl
4983         fi
4984     fi
4985 fi
4986 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4987
4988 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4989 enabled makeinfo && (makeinfo --version | \
4990                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
4991     && enable makeinfo_html || disable makeinfo_html
4992 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4993 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4994 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4995 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4996
4997 check_header linux/fb.h
4998 check_header linux/videodev.h
4999 check_header linux/videodev2.h
5000 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5001
5002 check_header sys/videoio.h
5003 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5004
5005 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5006 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5007 # w32api 3.12 had it defined wrong
5008 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5009
5010 check_type "dshow.h" IBaseFilter
5011
5012 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5013 { check_header dev/bktr/ioctl_meteor.h &&
5014   check_header dev/bktr/ioctl_bt848.h; } ||
5015 { check_header machine/ioctl_meteor.h &&
5016   check_header machine/ioctl_bt848.h; } ||
5017 { check_header dev/video/meteor/ioctl_meteor.h &&
5018   check_header dev/video/bktr/ioctl_bt848.h; } ||
5019 check_header dev/ic/bt8xx.h
5020
5021 check_header sndio.h
5022 if check_struct sys/soundcard.h audio_buf_info bytes; then
5023     enable_safe sys/soundcard.h
5024 else
5025     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5026     #include <sys/soundcard.h>
5027     audio_buf_info abc;
5028 EOF
5029 fi
5030 check_header soundcard.h
5031
5032 enabled_any alsa_indev alsa_outdev &&
5033     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5034
5035 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5036     check_func jack_port_get_latency_range -ljack
5037
5038 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5039
5040 if enabled libcdio; then
5041     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5042     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5043     die "ERROR: libcdio-paranoia not found"
5044 fi
5045
5046 enabled xlib &&
5047     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5048
5049 if ! disabled libxcb; then
5050     check_pkg_config xcb xcb/xcb.h xcb_connect || {
5051         enabled libxcb && die "ERROR: libxcb not found";
5052     } && disable x11grab && enable libxcb
5053
5054 if enabled libxcb; then
5055     disabled libxcb_shm || {
5056         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5057             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5058         } && check_header sys/shm.h && enable libxcb_shm; }
5059
5060     disabled libxcb_xfixes || {
5061         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5062             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5063         } && enable libxcb_xfixes; }
5064
5065     disabled libxcb_shape || {
5066         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5067             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5068         } && enable libxcb_shape; }
5069
5070     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5071     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5072 fi
5073 fi
5074
5075 if enabled x11grab; then
5076     enabled xlib || die "ERROR: Xlib not found"
5077     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5078     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5079 fi
5080
5081 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5082
5083 enabled dxva2api_h &&
5084     check_cc <<EOF && enable dxva2api_cobj
5085 #define _WIN32_WINNT 0x0600
5086 #define COBJMACROS
5087 #include <windows.h>
5088 #include <d3d9.h>
5089 #include <dxva2api.h>
5090 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5091 EOF
5092
5093 enabled vaapi &&
5094     check_lib va/va.h vaInitialize -lva ||
5095     disable vaapi
5096
5097 enabled vdpau &&
5098     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5099     disable vdpau
5100
5101 enabled vdpau && enabled xlib &&
5102     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5103     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5104     enable vdpau_x11
5105
5106 # Funny iconv installations are not unusual, so check it after all flags have been set
5107 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5108
5109 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5110
5111 # add some useful compiler flags if supported
5112 check_cflags -Wdeclaration-after-statement
5113 check_cflags -Wall
5114 check_cflags -Wdisabled-optimization
5115 check_cflags -Wpointer-arith
5116 check_cflags -Wredundant-decls
5117 check_cflags -Wwrite-strings
5118 check_cflags -Wtype-limits
5119 check_cflags -Wundef
5120 check_cflags -Wmissing-prototypes
5121 check_cflags -Wno-pointer-to-int-cast
5122 check_cflags -Wstrict-prototypes
5123 check_cflags -Wempty-body
5124 enabled extra_warnings && check_cflags -Winline
5125
5126 check_disable_warning(){
5127     warning_flag=-W${1#-Wno-}
5128     test_cflags $warning_flag && add_cflags $1
5129 }
5130
5131 check_disable_warning -Wno-parentheses
5132 check_disable_warning -Wno-switch
5133 check_disable_warning -Wno-format-zero-length
5134 check_disable_warning -Wno-pointer-sign
5135
5136 # add some linker flags
5137 check_ldflags -Wl,--warn-common
5138 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5139 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5140 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5141
5142 # add some strip flags
5143 # -wN '..@*' is more selective than -x, but not available everywhere.
5144 check_stripflags -wN \'..@*\' || check_stripflags -x
5145
5146 enabled neon_clobber_test &&
5147     check_ldflags -Wl,--wrap,avcodec_open2              \
5148                   -Wl,--wrap,avcodec_decode_audio4      \
5149                   -Wl,--wrap,avcodec_decode_video2      \
5150                   -Wl,--wrap,avcodec_decode_subtitle2   \
5151                   -Wl,--wrap,avcodec_encode_audio2      \
5152                   -Wl,--wrap,avcodec_encode_video2      \
5153                   -Wl,--wrap,avcodec_encode_subtitle    \
5154                   -Wl,--wrap,swr_convert                \
5155                   -Wl,--wrap,avresample_convert ||
5156     disable neon_clobber_test
5157
5158 enabled xmm_clobber_test &&
5159     check_ldflags -Wl,--wrap,avcodec_open2              \
5160                   -Wl,--wrap,avcodec_decode_audio4      \
5161                   -Wl,--wrap,avcodec_decode_video2      \
5162                   -Wl,--wrap,avcodec_decode_subtitle2   \
5163                   -Wl,--wrap,avcodec_encode_audio2      \
5164                   -Wl,--wrap,avcodec_encode_video       \
5165                   -Wl,--wrap,avcodec_encode_video2      \
5166                   -Wl,--wrap,avcodec_encode_subtitle    \
5167                   -Wl,--wrap,swr_convert                \
5168                   -Wl,--wrap,avresample_convert         \
5169                   -Wl,--wrap,sws_scale ||
5170     disable xmm_clobber_test
5171
5172 echo "X{};" > $TMPV
5173 if test_ldflags -Wl,--version-script,$TMPV; then
5174     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5175     check_cc <<EOF && enable symver_asm_label
5176 void ff_foo(void) __asm__ ("av_foo@VERSION");
5177 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5178 EOF
5179     check_cc <<EOF && enable symver_gnu_asm
5180 __asm__(".symver ff_foo,av_foo@VERSION");
5181 void ff_foo(void) {}
5182 EOF
5183 fi
5184
5185 if [ -z "$optflags" ]; then
5186     if enabled small; then
5187         optflags=$cflags_size
5188     elif enabled optimizations; then
5189         optflags=$cflags_speed
5190     else
5191         optflags=$cflags_noopt
5192     fi
5193 fi
5194
5195 check_optflags(){
5196     check_cflags "$@"
5197     enabled lto && check_ldflags "$@"
5198 }
5199
5200
5201 if enabled lto; then
5202     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5203     check_cflags  -flto
5204     check_ldflags -flto $cpuflags
5205     disable inline_asm_direct_symbol_refs
5206 fi
5207
5208 check_optflags $optflags
5209 check_optflags -fno-math-errno
5210 check_optflags -fno-signed-zeros
5211
5212 enabled ftrapv && check_cflags -ftrapv
5213
5214 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5215 int x;
5216 EOF
5217
5218
5219 if enabled icc; then
5220     # Just warnings, no remarks
5221     check_cflags -w1
5222     # -wd: Disable following warnings
5223     # 144, 167, 556: -Wno-pointer-sign
5224     # 188: enumerated type mixed with another type
5225     # 1292: attribute "foo" ignored
5226     # 1419: external declaration in primary source file
5227     # 10006: ignoring unknown option -fno-signed-zeros
5228     # 10148: ignoring unknown option -Wno-parentheses
5229     # 10156: ignoring option '-W'; no argument required
5230     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5231     # 11030: Warning unknown option --as-needed
5232     # 10156: ignoring option '-export'; no argument required
5233     check_ldflags -wd10156,11030
5234     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5235     enable ebp_available
5236     # The test above does not test linking
5237     enabled lto && disable symver_asm_label
5238     if enabled x86_32; then
5239         icc_version=$($cc -dumpversion)
5240         test ${icc_version%%.*} -ge 11 &&
5241             check_cflags -falign-stack=maintain-16-byte ||
5242             disable aligned_stack
5243     fi
5244 elif enabled ccc; then
5245     # disable some annoying warnings
5246     add_cflags -msg_disable bitnotint
5247     add_cflags -msg_disable mixfuncvoid
5248     add_cflags -msg_disable nonstandcast
5249     add_cflags -msg_disable unsupieee
5250 elif enabled gcc; then
5251     check_optflags -fno-tree-vectorize
5252     check_cflags -Werror=format-security
5253     check_cflags -Werror=implicit-function-declaration
5254     check_cflags -Werror=missing-prototypes
5255     check_cflags -Werror=return-type
5256     check_cflags -Werror=vla
5257     check_cflags -Wformat
5258     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5259 elif enabled llvm_gcc; then
5260     check_cflags -mllvm -stack-alignment=16
5261 elif enabled clang; then
5262     check_cflags -mllvm -stack-alignment=16
5263     check_cflags -Qunused-arguments
5264     check_cflags -Werror=implicit-function-declaration
5265     check_cflags -Werror=missing-prototypes
5266     check_cflags -Werror=return-type
5267 elif enabled cparser; then
5268     add_cflags -Wno-missing-variable-declarations
5269     add_cflags -Wno-empty-statement
5270 elif enabled armcc; then
5271     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5272     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5273     # 2523: use of inline assembly is deprecated
5274     add_cflags -W${armcc_opt},--diag_suppress=2523
5275     add_cflags -W${armcc_opt},--diag_suppress=1207
5276     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5277     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5278     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5279     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5280 elif enabled tms470; then
5281     add_cflags -pds=824 -pds=837
5282     disable inline_asm
5283 elif enabled pathscale; then
5284     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5285 elif enabled_any msvc icl; then
5286     enabled x86_32 && disable aligned_stack
5287     enabled_all x86_32 debug && add_cflags -Oy-
5288     enabled debug && add_ldflags -debug
5289     enable pragma_deprecated
5290     if enabled icl; then
5291         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5292         # (correctly) on icl 13.x.
5293         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5294             add_cflags -Qansi-alias
5295         # Some inline asm is not compilable in debug
5296         if enabled debug; then
5297             disable ebp_available
5298             disable ebx_available
5299         fi
5300     fi
5301     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5302     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5303 fi
5304
5305 case $as_type in
5306     clang)
5307         add_asflags -Qunused-arguments
5308     ;;
5309 esac
5310
5311 case $ld_type in
5312     clang)
5313         check_ldflags -Qunused-arguments
5314     ;;
5315 esac
5316
5317 case $target_os in
5318     osf1)
5319         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5320     ;;
5321     plan9)
5322         add_cppflags -Dmain=plan9_main
5323     ;;
5324 esac
5325
5326 enable frame_thread_encoder
5327
5328 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5329
5330 check_deps $CONFIG_LIST       \
5331            $CONFIG_EXTRA      \
5332            $HAVE_LIST         \
5333            $ALL_COMPONENTS    \
5334
5335 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"
5336
5337
5338 if test $target_os = "haiku"; then
5339     disable memalign
5340     disable posix_memalign
5341 fi
5342
5343 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5344     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5345     enable dxva2_lib
5346
5347 ! enabled_any memalign posix_memalign aligned_malloc &&
5348     enabled simd_align_16 && enable memalign_hack
5349
5350 # add_dep lib dep
5351 # -> enable ${lib}_deps_${dep}
5352 # -> add $dep to ${lib}_deps only once
5353 add_dep() {
5354     lib=$1
5355     dep=$2
5356     enabled "${lib}_deps_${dep}" && return 0
5357     enable  "${lib}_deps_${dep}"
5358     prepend "${lib}_deps" $dep
5359 }
5360
5361 # merge deps lib components
5362 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5363 merge_deps() {
5364     lib=$1
5365     shift
5366     for comp in $*; do
5367         enabled $comp || continue
5368         eval "dep=\"\$${comp}_deps\""
5369         for d in $dep; do
5370             add_dep $lib $d
5371         done
5372     done
5373 }
5374
5375 merge_deps libavfilter $FILTER_LIST
5376
5377 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5378
5379 for thread in $THREADS_LIST; do
5380     if enabled $thread; then
5381         test -n "$thread_type" &&
5382             die "ERROR: Only one thread type must be selected." ||
5383             thread_type="$thread"
5384     fi
5385 done
5386
5387 enabled zlib && add_cppflags -DZLIB_CONST
5388
5389 # conditional library dependencies, in linking order
5390 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5391 enabled aresample_filter    && prepend avfilter_deps "swresample"
5392 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5393 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5394 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5395 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5396 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5397 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5398 enabled mp_filter           && prepend avfilter_deps "avcodec"
5399 enabled pan_filter          && prepend avfilter_deps "swresample"
5400 enabled pp_filter           && prepend avfilter_deps "postproc"
5401 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5402 enabled resample_filter && prepend avfilter_deps "avresample"
5403 enabled sab_filter          && prepend avfilter_deps "swscale"
5404 enabled scale_filter    && prepend avfilter_deps "swscale"
5405 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5406 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5407 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5408
5409 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5410
5411 enabled opus_decoder    && prepend avcodec_deps "swresample"
5412
5413 expand_deps(){
5414     lib_deps=${1}_deps
5415     eval "deps=\$$lib_deps"
5416     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5417     unique $lib_deps
5418 }
5419
5420 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5421 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5422
5423 map 'expand_deps $v' $LIBRARY_LIST
5424
5425 echo "install prefix            $prefix"
5426 echo "source path               $source_path"
5427 echo "C compiler                $cc"
5428 echo "C library                 $libc_type"
5429 if test "$host_cc" != "$cc"; then
5430     echo "host C compiler           $host_cc"
5431     echo "host C library            $host_libc_type"
5432 fi
5433 echo "ARCH                      $arch ($cpu)"
5434 if test "$build_suffix" != ""; then
5435     echo "build suffix              $build_suffix"
5436 fi
5437 if test "$progs_suffix" != ""; then
5438     echo "progs suffix              $progs_suffix"
5439 fi
5440 if test "$extra_version" != ""; then
5441     echo "version string suffix     $extra_version"
5442 fi
5443 echo "big-endian                ${bigendian-no}"
5444 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5445 if enabled x86; then
5446     echo "${yasmexe}                      ${yasm-no}"
5447     echo "MMX enabled               ${mmx-no}"
5448     echo "MMXEXT enabled            ${mmxext-no}"
5449     echo "3DNow! enabled            ${amd3dnow-no}"
5450     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5451     echo "SSE enabled               ${sse-no}"
5452     echo "SSSE3 enabled             ${ssse3-no}"
5453     echo "AVX enabled               ${avx-no}"
5454     echo "XOP enabled               ${xop-no}"
5455     echo "FMA3 enabled              ${fma3-no}"
5456     echo "FMA4 enabled              ${fma4-no}"
5457     echo "i686 features enabled     ${i686-no}"
5458     echo "CMOV is fast              ${fast_cmov-no}"
5459     echo "EBX available             ${ebx_available-no}"
5460     echo "EBP available             ${ebp_available-no}"
5461 fi
5462 if enabled aarch64; then
5463     echo "NEON enabled              ${neon-no}"
5464     echo "VFP enabled               ${vfp-no}"
5465 fi
5466 if enabled arm; then
5467     echo "ARMv5TE enabled           ${armv5te-no}"
5468     echo "ARMv6 enabled             ${armv6-no}"
5469     echo "ARMv6T2 enabled           ${armv6t2-no}"
5470     echo "VFP enabled               ${vfp-no}"
5471     echo "NEON enabled              ${neon-no}"
5472     echo "THUMB enabled             ${thumb-no}"
5473 fi
5474 if enabled mips; then
5475     echo "MIPS FPU enabled          ${mipsfpu-no}"
5476     echo "MIPS32R2 enabled          ${mips32r2-no}"
5477     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5478     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5479 fi
5480 if enabled ppc; then
5481     echo "AltiVec enabled           ${altivec-no}"
5482     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5483     echo "PPC VSX optimizations     ${vsx-no}"
5484     echo "dcbzl available           ${dcbzl-no}"
5485 fi
5486 echo "debug symbols             ${debug-no}"
5487 echo "strip symbols             ${stripping-no}"
5488 echo "optimize for size         ${small-no}"
5489 echo "optimizations             ${optimizations-no}"
5490 echo "static                    ${static-no}"
5491 echo "shared                    ${shared-no}"
5492 echo "postprocessing support    ${postproc-no}"
5493 echo "new filter support        ${avfilter-no}"
5494 echo "network support           ${network-no}"
5495 echo "threading support         ${thread_type-no}"
5496 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5497 echo "SDL support               ${sdl-no}"
5498 echo "opencl enabled            ${opencl-no}"
5499 echo "texi2html enabled         ${texi2html-no}"
5500 echo "perl enabled              ${perl-no}"
5501 echo "pod2man enabled           ${pod2man-no}"
5502 echo "makeinfo enabled          ${makeinfo-no}"
5503 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5504 test -n "$random_seed" &&
5505     echo "random seed               ${random_seed}"
5506 echo
5507
5508 echo "External libraries:"
5509 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5510 echo
5511
5512 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5513     echo "Enabled ${type}s:"
5514     eval list=\$$(toupper $type)_LIST
5515     print_enabled '_*' $list | print_3_columns
5516     echo
5517 done
5518
5519 license="LGPL version 2.1 or later"
5520 if enabled nonfree; then
5521     license="nonfree and unredistributable"
5522 elif enabled gplv3; then
5523     license="GPL version 3 or later"
5524 elif enabled lgplv3; then
5525     license="LGPL version 3 or later"
5526 elif enabled gpl; then
5527     license="GPL version 2 or later"
5528 fi
5529
5530 echo "License: $license"
5531
5532 echo "Creating config.mak, config.h, and doc/config.texi..."
5533
5534 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5535
5536 enabled stripping || strip="echo skipping strip"
5537
5538 config_files="$TMPH config.mak doc/config.texi"
5539
5540 cat > config.mak <<EOF
5541 # Automatically generated by configure - do not modify!
5542 ifndef FFMPEG_CONFIG_MAK
5543 FFMPEG_CONFIG_MAK=1
5544 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5545 prefix=$prefix
5546 LIBDIR=\$(DESTDIR)$libdir
5547 SHLIBDIR=\$(DESTDIR)$shlibdir
5548 INCDIR=\$(DESTDIR)$incdir
5549 BINDIR=\$(DESTDIR)$bindir
5550 DATADIR=\$(DESTDIR)$datadir
5551 DOCDIR=\$(DESTDIR)$docdir
5552 MANDIR=\$(DESTDIR)$mandir
5553 SRC_PATH=$source_path
5554 ifndef MAIN_MAKEFILE
5555 SRC_PATH:=\$(SRC_PATH:.%=..%)
5556 endif
5557 CC_IDENT=$cc_ident
5558 ARCH=$arch
5559 INTRINSICS=$intrinsics
5560 CC=$cc
5561 CXX=$cxx
5562 AS=$as
5563 LD=$ld
5564 DEPCC=$dep_cc
5565 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5566 DEPAS=$as
5567 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5568 YASM=$yasmexe
5569 DEPYASM=$yasmexe
5570 AR=$ar
5571 ARFLAGS=$arflags
5572 AR_O=$ar_o
5573 RANLIB=$ranlib
5574 STRIP=$strip
5575 CP=cp -p
5576 LN_S=$ln_s
5577 CPPFLAGS=$CPPFLAGS
5578 CFLAGS=$CFLAGS
5579 CXXFLAGS=$CXXFLAGS
5580 ASFLAGS=$ASFLAGS
5581 AS_C=$AS_C
5582 AS_O=$AS_O
5583 CC_C=$CC_C
5584 CC_E=$CC_E
5585 CC_O=$CC_O
5586 CXX_C=$CXX_C
5587 CXX_O=$CXX_O
5588 LD_O=$LD_O
5589 LD_LIB=$LD_LIB
5590 LD_PATH=$LD_PATH
5591 DLLTOOL=$dlltool
5592 WINDRES=$windres
5593 DEPWINDRES=$dep_cc
5594 DOXYGEN=$doxygen
5595 LDFLAGS=$LDFLAGS
5596 LDEXEFLAGS=$LDEXEFLAGS
5597 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5598 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5599 YASMFLAGS=$YASMFLAGS
5600 BUILDSUF=$build_suffix
5601 PROGSSUF=$progs_suffix
5602 FULLNAME=$FULLNAME
5603 LIBPREF=$LIBPREF
5604 LIBSUF=$LIBSUF
5605 LIBNAME=$LIBNAME
5606 SLIBPREF=$SLIBPREF
5607 SLIBSUF=$SLIBSUF
5608 EXESUF=$EXESUF
5609 EXTRA_VERSION=$extra_version
5610 CCDEP=$CCDEP
5611 CXXDEP=$CXXDEP
5612 CCDEP_FLAGS=$CCDEP_FLAGS
5613 ASDEP=$ASDEP
5614 ASDEP_FLAGS=$ASDEP_FLAGS
5615 CC_DEPFLAGS=$CC_DEPFLAGS
5616 AS_DEPFLAGS=$AS_DEPFLAGS
5617 HOSTCC=$host_cc
5618 HOSTLD=$host_ld
5619 HOSTCFLAGS=$host_cflags
5620 HOSTCPPFLAGS=$host_cppflags
5621 HOSTEXESUF=$HOSTEXESUF
5622 HOSTLDFLAGS=$host_ldflags
5623 HOSTLIBS=$host_libs
5624 DEPHOSTCC=$host_cc
5625 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5626 HOSTCCDEP=$HOSTCCDEP
5627 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5628 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5629 HOSTCC_C=$HOSTCC_C
5630 HOSTCC_O=$HOSTCC_O
5631 HOSTLD_O=$HOSTLD_O
5632 TARGET_EXEC=$target_exec $target_exec_args
5633 TARGET_PATH=$target_path
5634 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5635 CFLAGS-ffplay=$sdl_cflags
5636 ZLIB=$($ldflags_filter -lz)
5637 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5638 EXTRALIBS=$extralibs
5639 COMPAT_OBJS=$compat_objs
5640 EXEOBJS=$exeobjs
5641 INSTALL=$install
5642 LIBTARGET=${LIBTARGET}
5643 SLIBNAME=${SLIBNAME}
5644 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5645 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5646 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5647 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5648 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5649 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5650 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5651 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5652 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5653 NOREDZONE_FLAGS=$noredzone_flags
5654 EOF
5655
5656 get_version(){
5657     lcname=lib${1}
5658     name=$(toupper $lcname)
5659     file=$source_path/$lcname/version.h
5660     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5661     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5662     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5663     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5664     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5665     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5666 }
5667
5668 map 'get_version $v' $LIBRARY_LIST
5669
5670 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5671
5672 print_program_libs(){
5673     eval "program_libs=\$${1}_libs"
5674     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5675 }
5676
5677 map 'print_program_libs $v' $PROGRAM_LIST
5678
5679 cat > $TMPH <<EOF
5680 /* Automatically generated by configure - do not modify! */
5681 #ifndef FFMPEG_CONFIG_H
5682 #define FFMPEG_CONFIG_H
5683 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5684 #define FFMPEG_LICENSE "$(c_escape $license)"
5685 #define CONFIG_THIS_YEAR 2014
5686 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5687 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5688 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5689 #define av_restrict $_restrict
5690 #define EXTERN_PREFIX "${extern_prefix}"
5691 #define EXTERN_ASM ${extern_prefix}
5692 #define BUILDSUF "$build_suffix"
5693 #define SLIBSUF "$SLIBSUF"
5694 #define HAVE_MMX2 HAVE_MMXEXT
5695 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5696 EOF
5697
5698 test -n "$assert_level" &&
5699     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5700
5701 test -n "$malloc_prefix" &&
5702     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5703
5704 if enabled yasm; then
5705     append config_files $TMPASM
5706     printf '' >$TMPASM
5707 fi
5708
5709 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5710
5711
5712 mkdir -p doc
5713 echo "@c auto-generated by configure" > doc/config.texi
5714
5715 print_config ARCH_   "$config_files" $ARCH_LIST
5716 print_config HAVE_   "$config_files" $HAVE_LIST
5717 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5718                                      $CONFIG_EXTRA      \
5719                                      $ALL_COMPONENTS    \
5720
5721 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5722 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5723
5724 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5725 cp_if_changed $TMPH config.h
5726 touch .config
5727
5728 enabled yasm && cp_if_changed $TMPASM config.asm
5729
5730 cat > $TMPH <<EOF
5731 /* Generated by ffconf */
5732 #ifndef AVUTIL_AVCONFIG_H
5733 #define AVUTIL_AVCONFIG_H
5734 EOF
5735
5736 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5737
5738 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5739
5740 cp_if_changed $TMPH libavutil/avconfig.h
5741
5742 if test -n "$WARNINGS"; then
5743     printf "\n$WARNINGS"
5744     enabled fatal_warnings && exit 1
5745 fi
5746
5747 # build pkg-config files
5748
5749 lib_version(){
5750     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5751 }
5752
5753 pkgconfig_generate(){
5754     name=$1
5755     shortname=${name#lib}${build_suffix}
5756     comment=$2
5757     version=$3
5758     libs=$4
5759     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5760     requires=${requires%, }
5761     enabled ${name#lib} || return 0
5762     mkdir -p $name
5763     cat <<EOF > $name/$name${build_suffix}.pc
5764 prefix=$prefix
5765 exec_prefix=\${prefix}
5766 libdir=$libdir
5767 includedir=$incdir
5768
5769 Name: $name
5770 Description: $comment
5771 Version: $version
5772 Requires: $(enabled shared || echo $requires)
5773 Requires.private: $(enabled shared && echo $requires)
5774 Conflicts:
5775 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5776 Libs.private: $(enabled shared && echo $libs)
5777 Cflags: -I\${includedir}
5778 EOF
5779
5780 mkdir -p doc/examples/pc-uninstalled
5781 includedir=${source_path}
5782 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5783     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5784 prefix=
5785 exec_prefix=
5786 libdir=\${pcfiledir}/../../../$name
5787 includedir=${includedir}
5788
5789 Name: $name
5790 Description: $comment
5791 Version: $version
5792 Requires: $requires
5793 Conflicts:
5794 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5795 Cflags: -I\${includedir}
5796 EOF
5797 }
5798
5799 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
5800 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5801 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5802 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5803 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5804 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5805 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
5806 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5807 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"