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
  93 Licensing options:
  94   --enable-gpl             allow use of GPL code, the resulting libs
  95                            and binaries will be under GPL [no]
  96   --enable-version3        upgrade (L)GPL to version 3 [no]
  97   --enable-nonfree         allow use of nonfree code, the resulting libs
  98                            and binaries will be unredistributable [no]
  99
 100 Configuration options:
 101   --disable-static         do not build static libraries [no]
 102   --enable-shared          build shared libraries [no]
 103   --enable-small           optimize for size instead of speed
 104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 105   --enable-gray            enable full grayscale support (slower color)
 106   --disable-swscale-alpha  disable alpha channel support in swscale
 107   --disable-all            disable building components, libraries and programs
 108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 109   --enable-raise-major     increase major version numbers in sonames [no]
 110
 111 Program options:
 112   --disable-programs       do not build command line programs
 113   --disable-ffmpeg         disable ffmpeg build
 114   --disable-ffplay         disable ffplay build
 115   --disable-ffprobe        disable ffprobe build
 116   --disable-ffserver       disable ffserver build
 117
 118 Documentation options:
 119   --disable-doc            do not build documentation
 120   --disable-htmlpages      do not build HTML documentation pages
 121   --disable-manpages       do not build man documentation pages
 122   --disable-podpages       do not build POD documentation pages
 123   --disable-txtpages       do not build text documentation pages
 124
 125 Component options:
 126   --disable-avdevice       disable libavdevice build
 127   --disable-avcodec        disable libavcodec build
 128   --disable-avformat       disable libavformat build
 129   --disable-avutil         disable libavutil build
 130   --disable-swresample     disable libswresample build
 131   --disable-swscale        disable libswscale build
 132   --disable-postproc       disable libpostproc build
 133   --disable-avfilter       disable libavfilter build
 134   --enable-avresample      enable libavresample build [no]
 135   --disable-pthreads       disable pthreads [auto]
 136   --disable-w32threads     disable Win32 threads [auto]
 137   --disable-os2threads     disable OS/2 threads [auto]
 138   --disable-network        disable network support [no]
 139   --disable-dct            disable DCT code
 140   --disable-dwt            disable DWT code
 141   --disable-error-resilience disable error resilience code
 142   --disable-lsp            disable LSP code
 143   --disable-lzo            disable LZO decoder code
 144   --disable-mdct           disable MDCT code
 145   --disable-rdft           disable RDFT code
 146   --disable-fft            disable FFT code
 147   --disable-pixelutils     disable pixel utils in libavutil
 148
 149 Hardware accelerators:
 150   --disable-dxva2          disable DXVA2 code [autodetect]
 151   --disable-vaapi          disable VAAPI code [autodetect]
 152   --disable-vda            disable VDA code [autodetect]
 153   --disable-vdpau          disable VDPAU code [autodetect]
 154
 155 Individual component options:
 156   --disable-everything     disable all components listed below
 157   --disable-encoder=NAME   disable encoder NAME
 158   --enable-encoder=NAME    enable encoder NAME
 159   --disable-encoders       disable all encoders
 160   --disable-decoder=NAME   disable decoder NAME
 161   --enable-decoder=NAME    enable decoder NAME
 162   --disable-decoders       disable all decoders
 163   --disable-hwaccel=NAME   disable hwaccel NAME
 164   --enable-hwaccel=NAME    enable hwaccel NAME
 165   --disable-hwaccels       disable all hwaccels
 166   --disable-muxer=NAME     disable muxer NAME
 167   --enable-muxer=NAME      enable muxer NAME
 168   --disable-muxers         disable all muxers
 169   --disable-demuxer=NAME   disable demuxer NAME
 170   --enable-demuxer=NAME    enable demuxer NAME
 171   --disable-demuxers       disable all demuxers
 172   --enable-parser=NAME     enable parser NAME
 173   --disable-parser=NAME    disable parser NAME
 174   --disable-parsers        disable all parsers
 175   --enable-bsf=NAME        enable bitstream filter NAME
 176   --disable-bsf=NAME       disable bitstream filter NAME
 177   --disable-bsfs           disable all bitstream filters
 178   --enable-protocol=NAME   enable protocol NAME
 179   --disable-protocol=NAME  disable protocol NAME
 180   --disable-protocols      disable all protocols
 181   --enable-indev=NAME      enable input device NAME
 182   --disable-indev=NAME     disable input device NAME
 183   --disable-indevs         disable input devices
 184   --enable-outdev=NAME     enable output device NAME
 185   --disable-outdev=NAME    disable output device NAME
 186   --disable-outdevs        disable output devices
 187   --disable-devices        disable all devices
 188   --enable-filter=NAME     enable filter NAME
 189   --disable-filter=NAME    disable filter NAME
 190   --disable-filters        disable all filters
 191
 192 External library support:
 193   --enable-avisynth        enable reading of AviSynth script files [no]
 194   --disable-bzlib          disable bzlib [autodetect]
 195   --enable-fontconfig      enable fontconfig
 196   --enable-frei0r          enable frei0r video filtering
 197   --enable-gnutls          enable gnutls [no]
 198   --disable-iconv          disable iconv [autodetect]
 199   --enable-ladspa          enable LADSPA audio filtering
 200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 201   --enable-libass          enable libass subtitles rendering [no]
 202   --enable-libbluray       enable BluRay reading using libbluray [no]
 203   --enable-libbs2b         enable bs2b DSP library [no]
 204   --enable-libcaca         enable textual display using libcaca
 205   --enable-libcelt         enable CELT decoding via libcelt [no]
 206   --enable-libcdio         enable audio CD grabbing with libcdio
 207   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 208                            and libraw1394 [no]
 209   --enable-libfaac         enable AAC encoding via libfaac [no]
 210   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 211   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 212   --enable-libfreetype     enable libfreetype [no]
 213   --enable-libfribidi      enable libfribidi [no]
 214   --enable-libgme          enable Game Music Emu via libgme [no]
 215   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 216   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 217   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 218   --enable-libmodplug      enable ModPlug via libmodplug [no]
 219   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 220   --enable-libnut          enable NUT (de)muxing via libnut,
 221                            native (de)muxer exists [no]
 222   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 223   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 224   --enable-libopencv       enable video filtering via libopencv [no]
 225   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 226   --enable-libopus         enable Opus de/encoding via libopus [no]
 227   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 228   --enable-libquvi         enable quvi input via libquvi [no]
 229   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 230   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 231   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 232   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 233   --enable-libsoxr         enable Include libsoxr resampling [no]
 234   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 235   --enable-libssh          enable SFTP protocol via libssh [no]
 236   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 237   --enable-libtheora       enable Theora encoding via libtheora [no]
 238   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 239   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 240   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 241   --enable-libvidstab      enable video stabilization using vid.stab [no]
 242   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 243   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 244   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 245                            native implementation exists [no]
 246   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 247   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 248   --enable-libwebp         enable WebP encoding via libwebp [no]
 249   --enable-libx264         enable H.264 encoding via x264 [no]
 250   --enable-libx265         enable HEVC encoding via x265 [no]
 251   --enable-libxavs         enable AVS encoding via xavs [no]
 252   --enable-libxvid         enable Xvid encoding via xvidcore,
 253                            native MPEG-4/Xvid encoder exists [no]
 254   --enable-libzmq          enable message passing via libzmq [no]
 255   --enable-libzvbi         enable teletext support via libzvbi [no]
 256   --enable-decklink        enable Blackmagick DeckLink output [no]
 257   --enable-openal          enable OpenAL 1.1 capture support [no]
 258   --enable-opencl          enable OpenCL code
 259   --enable-opengl          enable OpenGL rendering [no]
 260   --enable-openssl         enable openssl [no]
 261   --enable-x11grab         enable X11 grabbing [no]
 262   --disable-xlib           disable xlib [autodetect]
 263   --disable-zlib           disable zlib [autodetect]
 264
 265 Toolchain options:
 266   --arch=ARCH              select architecture [$arch]
 267   --cpu=CPU                select the minimum required CPU (affects
 268                            instruction selection, may crash on older CPUs)
 269   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 270   --progs-suffix=SUFFIX    program name suffix []
 271   --enable-cross-compile   assume a cross-compiler is used
 272   --sysroot=PATH           root of cross-build tree
 273   --sysinclude=PATH        location of cross-build system headers
 274   --target-os=OS           compiler targets OS [$target_os]
 275   --target-exec=CMD        command to run executables on target
 276   --target-path=DIR        path to view of build directory on target
 277   --target-samples=DIR     path to samples directory on target
 278   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 279   --toolchain=NAME         set tool defaults according to NAME
 280   --nm=NM                  use nm tool NM [$nm_default]
 281   --ar=AR                  use archive tool AR [$ar_default]
 282   --as=AS                  use assembler AS [$as_default]
 283   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 284   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 285   --cc=CC                  use C compiler CC [$cc_default]
 286   --cxx=CXX                use C compiler CXX [$cxx_default]
 287   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 288   --ld=LD                  use linker LD [$ld_default]
 289   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 290   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 291   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 292   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 293   --host-cc=HOSTCC         use host C compiler HOSTCC
 294   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 295   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 296   --host-ld=HOSTLD         use host linker HOSTLD
 297   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 298   --host-libs=HLIBS        use libs HLIBS when linking for host
 299   --host-os=OS             compiler host OS [$target_os]
 300   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 301   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 302   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 303   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 304   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 305   --extra-version=STRING   version string suffix []
 306   --optflags=OPTFLAGS      override optimization-related compiler flags
 307   --build-suffix=SUFFIX    library name suffix []
 308   --enable-pic             build position-independent code
 309   --enable-thumb           compile for Thumb instruction set
 310   --enable-lto             use link-time optimization
 311
 312 Advanced options (experts only):
 313   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 314   --disable-symver         disable symbol versioning
 315   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 316   --disable-safe-bitstream-reader
 317                            disable buffer boundary checking in bitreaders
 318                            (faster, but may crash)
 319   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 320   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 321
 322 Optimization options (experts only):
 323   --disable-asm            disable all assembly optimizations
 324   --disable-altivec        disable AltiVec optimizations
 325   --disable-amd3dnow       disable 3DNow! optimizations
 326   --disable-amd3dnowext    disable 3DNow! extended optimizations
 327   --disable-mmx            disable MMX optimizations
 328   --disable-mmxext         disable MMXEXT optimizations
 329   --disable-sse            disable SSE optimizations
 330   --disable-sse2           disable SSE2 optimizations
 331   --disable-sse3           disable SSE3 optimizations
 332   --disable-ssse3          disable SSSE3 optimizations
 333   --disable-sse4           disable SSE4 optimizations
 334   --disable-sse42          disable SSE4.2 optimizations
 335   --disable-avx            disable AVX optimizations
 336   --disable-xop            disable XOP optimizations
 337   --disable-fma3           disable FMA3 optimizations
 338   --disable-fma4           disable FMA4 optimizations
 339   --disable-avx2           disable AVX2 optimizations
 340   --disable-armv5te        disable armv5te optimizations
 341   --disable-armv6          disable armv6 optimizations
 342   --disable-armv6t2        disable armv6t2 optimizations
 343   --disable-vfp            disable VFP optimizations
 344   --disable-neon           disable NEON optimizations
 345   --disable-inline-asm     disable use of inline assembly
 346   --disable-yasm           disable use of nasm/yasm assembly
 347   --disable-mips32r2       disable MIPS32R2 optimizations
 348   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 349   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 350   --disable-mipsfpu        disable floating point MIPS optimizations
 351   --disable-fast-unaligned consider unaligned accesses slow
 352
 353 Developer options (useful when working on FFmpeg itself):
 354   --disable-debug          disable debugging symbols
 355   --enable-debug=LEVEL     set the debug level [$debuglevel]
 356   --disable-optimizations  disable compiler optimizations
 357   --enable-extra-warnings  enable more compiler warnings
 358   --disable-stripping      disable stripping of executables and shared libraries
 359   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 360                            2 causes a slowdown at runtime.
 361   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 362   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 363                            leaks and errors, using the specified valgrind binary.
 364                            Cannot be combined with --target-exec
 365   --enable-ftrapv          Trap arithmetic overflows
 366   --samples=PATH           location of test samples for FATE, if not set use
 367                            \$FATE_SAMPLES at make invocation time.
 368   --enable-neon-clobber-test check NEON registers for clobbering (should be
 369                            used only for debugging purposes)
 370   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 371                            should be used only for debugging purposes)
 372   --enable-random          randomly enable/disable components
 373   --disable-random
 374   --enable-random=LIST     randomly enable/disable specific components or
 375   --disable-random=LIST    component groups. LIST is a comma-separated list
 376                            of NAME[:PROB] entries where NAME is a component
 377                            (group) and PROB the probability associated with
 378                            NAME (default 0.5).
 379   --random-seed=VALUE      seed value for --enable/disable-random
 380
 381 NOTE: Object files are built at the place where configure is launched.
 382 EOF
 383   exit 0
 384 }
 385
 386 quotes='""'
 387
 388 log(){
 389     echo "$@" >> $logfile
 390 }
 391
 392 log_file(){
 393     log BEGIN $1
 394     pr -n -t $1 >> $logfile
 395     log END $1
 396 }
 397
 398 echolog(){
 399     log "$@"
 400     echo "$@"
 401 }
 402
 403 warn(){
 404     log "WARNING: $*"
 405     WARNINGS="${WARNINGS}WARNING: $*\n"
 406 }
 407
 408 die(){
 409     echolog "$@"
 410     cat <<EOF
 411
 412 If you think configure made a mistake, make sure you are using the latest
 413 version from Git.  If the latest version fails, report the problem to the
 414 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 415 EOF
 416     if disabled logging; then
 417         cat <<EOF
 418 Rerun configure with logging enabled (do not use --disable-logging), and
 419 include the log this produces with your report.
 420 EOF
 421     else
 422         cat <<EOF
 423 Include the log file "$logfile" produced by configure as this will help
 424 solve the problem.
 425 EOF
 426     fi
 427     exit 1
 428 }
 429
 430 # Avoid locale weirdness, besides we really just want to translate ASCII.
 431 toupper(){
 432     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 433 }
 434
 435 tolower(){
 436     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 437 }
 438
 439 c_escape(){
 440     echo "$*" | sed 's/["\\]/\\\0/g'
 441 }
 442
 443 sh_quote(){
 444     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 445     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 446     echo "$v"
 447 }
 448
 449 cleanws(){
 450     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 451 }
 452
 453 filter(){
 454     pat=$1
 455     shift
 456     for v; do
 457         eval "case $v in $pat) echo $v ;; esac"
 458     done
 459 }
 460
 461 filter_out(){
 462     pat=$1
 463     shift
 464     for v; do
 465         eval "case $v in $pat) ;; *) echo $v ;; esac"
 466     done
 467 }
 468
 469 map(){
 470     m=$1
 471     shift
 472     for v; do eval $m; done
 473 }
 474
 475 add_suffix(){
 476     suffix=$1
 477     shift
 478     for v; do echo ${v}${suffix}; done
 479 }
 480
 481 set_all(){
 482     value=$1
 483     shift
 484     for var in $*; do
 485         eval $var=$value
 486     done
 487 }
 488
 489 set_weak(){
 490     value=$1
 491     shift
 492     for var; do
 493         eval : \${$var:=$value}
 494     done
 495 }
 496
 497 sanitize_var_name(){
 498     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 499 }
 500
 501 set_safe(){
 502     var=$1
 503     shift
 504     eval $(sanitize_var_name "$var")='$*'
 505 }
 506
 507 get_safe(){
 508     eval echo \$$(sanitize_var_name "$1")
 509 }
 510
 511 pushvar(){
 512     for pvar in $*; do
 513         eval level=\${${pvar}_level:=0}
 514         eval ${pvar}_${level}="\$$pvar"
 515         eval ${pvar}_level=$(($level+1))
 516     done
 517 }
 518
 519 popvar(){
 520     for pvar in $*; do
 521         eval level=\${${pvar}_level:-0}
 522         test $level = 0 && continue
 523         eval level=$(($level-1))
 524         eval $pvar="\${${pvar}_${level}}"
 525         eval ${pvar}_level=$level
 526         eval unset ${pvar}_${level}
 527     done
 528 }
 529
 530 enable(){
 531     set_all yes $*
 532 }
 533
 534 disable(){
 535     set_all no $*
 536 }
 537
 538 enable_weak(){
 539     set_weak yes $*
 540 }
 541
 542 disable_weak(){
 543     set_weak no $*
 544 }
 545
 546 enable_safe(){
 547     for var; do
 548         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 549     done
 550 }
 551
 552 disable_safe(){
 553     for var; do
 554         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 555     done
 556 }
 557
 558 do_enable_deep(){
 559     for var; do
 560         enabled $var && continue
 561         eval sel="\$${var}_select"
 562         eval sgs="\$${var}_suggest"
 563         pushvar var sgs
 564         enable_deep $sel
 565         popvar sgs
 566         enable_deep_weak $sgs
 567         popvar var
 568     done
 569 }
 570
 571 enable_deep(){
 572     do_enable_deep $*
 573     enable $*
 574 }
 575
 576 enable_deep_weak(){
 577     for var; do
 578         disabled $var && continue
 579         pushvar var
 580         do_enable_deep $var
 581         popvar var
 582         enable_weak $var
 583     done
 584 }
 585
 586 enabled(){
 587     test "${1#!}" = "$1" && op== || op=!=
 588     eval test "x\$${1#!}" $op "xyes"
 589 }
 590
 591 disabled(){
 592     test "${1#!}" = "$1" && op== || op=!=
 593     eval test "x\$${1#!}" $op "xno"
 594 }
 595
 596 enabled_all(){
 597     for opt; do
 598         enabled $opt || return 1
 599     done
 600 }
 601
 602 disabled_all(){
 603     for opt; do
 604         disabled $opt || return 1
 605     done
 606 }
 607
 608 enabled_any(){
 609     for opt; do
 610         enabled $opt && return 0
 611     done
 612 }
 613
 614 disabled_any(){
 615     for opt; do
 616         disabled $opt && return 0
 617     done
 618     return 1
 619 }
 620
 621 set_default(){
 622     for opt; do
 623         eval : \${$opt:=\$${opt}_default}
 624     done
 625 }
 626
 627 is_in(){
 628     value=$1
 629     shift
 630     for var in $*; do
 631         [ $var = $value ] && return 0
 632     done
 633     return 1
 634 }
 635
 636 do_check_deps(){
 637     for cfg; do
 638         cfg="${cfg#!}"
 639         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 640         disabled ${cfg}_checking && continue
 641         enable ${cfg}_checking
 642         append allopts $cfg
 643
 644         eval dep_all="\$${cfg}_deps"
 645         eval dep_any="\$${cfg}_deps_any"
 646         eval dep_sel="\$${cfg}_select"
 647         eval dep_sgs="\$${cfg}_suggest"
 648         eval dep_ifa="\$${cfg}_if"
 649         eval dep_ifn="\$${cfg}_if_any"
 650
 651         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 652         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 653         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 654
 655         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 656         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 657         enabled_all  $dep_all || disable $cfg
 658         enabled_any  $dep_any || disable $cfg
 659         disabled_any $dep_sel && disable $cfg
 660
 661         if enabled $cfg; then
 662             enable_deep $dep_sel
 663             enable_deep_weak $dep_sgs
 664         fi
 665
 666         disable ${cfg}_checking
 667     done
 668 }
 669
 670 check_deps(){
 671     unset allopts
 672
 673     do_check_deps "$@"
 674
 675     for cfg in $allopts; do
 676         enabled $cfg || continue
 677         eval dep_extralibs="\$${cfg}_extralibs"
 678         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 679     done
 680 }
 681
 682 print_config(){
 683     pfx=$1
 684     files=$2
 685     shift 2
 686     map 'eval echo "$v \${$v:-no}"' "$@" |
 687     awk "BEGIN { split(\"$files\", files) }
 688         {
 689             c = \"$pfx\" toupper(\$1);
 690             v = \$2;
 691             sub(/yes/, 1, v);
 692             sub(/no/,  0, v);
 693             for (f in files) {
 694                 file = files[f];
 695                 if (file ~ /\\.h\$/) {
 696                     printf(\"#define %s %d\\n\", c, v) >>file;
 697                 } else if (file ~ /\\.asm\$/) {
 698                     printf(\"%%define %s %d\\n\", c, v) >>file;
 699                 } else if (file ~ /\\.mak\$/) {
 700                     n = -v ? \"\" : \"!\";
 701                     printf(\"%s%s=yes\\n\", n, c) >>file;
 702                 } else if (file ~ /\\.texi\$/) {
 703                     pre = -v ? \"\" : \"@c \";
 704                     yesno = \$2;
 705                     c2 = tolower(c);
 706                     gsub(/_/, \"-\", c2);
 707                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 708                 }
 709             }
 710         }"
 711 }
 712
 713 print_enabled(){
 714     suf=$1
 715     shift
 716     for v; do
 717         enabled $v && printf "%s\n" ${v%$suf};
 718     done
 719 }
 720
 721 append(){
 722     var=$1
 723     shift
 724     eval "$var=\"\$$var $*\""
 725 }
 726
 727 prepend(){
 728     var=$1
 729     shift
 730     eval "$var=\"$* \$$var\""
 731 }
 732
 733 unique(){
 734     var=$1
 735     uniq_list=""
 736     for tok in $(eval echo \$$var); do
 737         uniq_list="$(filter_out $tok $uniq_list) $tok"
 738     done
 739     eval "$var=\"${uniq_list}\""
 740 }
 741
 742 add_cppflags(){
 743     append CPPFLAGS "$@"
 744 }
 745
 746 add_cflags(){
 747     append CFLAGS $($cflags_filter "$@")
 748 }
 749
 750 add_cxxflags(){
 751     append CXXFLAGS $($cflags_filter "$@")
 752 }
 753
 754 add_asflags(){
 755     append ASFLAGS $($asflags_filter "$@")
 756 }
 757
 758 add_ldflags(){
 759     append LDFLAGS $($ldflags_filter "$@")
 760 }
 761
 762 add_ldexeflags(){
 763     append LDEXEFLAGS $($ldflags_filter "$@")
 764 }
 765
 766 add_stripflags(){
 767     append ASMSTRIPFLAGS "$@"
 768 }
 769
 770 add_extralibs(){
 771     prepend extralibs $($ldflags_filter "$@")
 772 }
 773
 774 add_host_cppflags(){
 775     append host_cppflags "$@"
 776 }
 777
 778 add_host_cflags(){
 779     append host_cflags $($host_cflags_filter "$@")
 780 }
 781
 782 add_host_ldflags(){
 783     append host_ldflags $($host_ldflags_filter "$@")
 784 }
 785
 786 add_compat(){
 787     append compat_objs $1
 788     shift
 789     map 'add_cppflags -D$v' "$@"
 790 }
 791
 792 check_cmd(){
 793     log "$@"
 794     "$@" >> $logfile 2>&1
 795 }
 796
 797 check_stat(){
 798     log check_stat "$@"
 799     stat "$1" >> $logfile 2>&1
 800 }
 801
 802 cc_o(){
 803     eval printf '%s\\n' $CC_O
 804 }
 805
 806 cc_e(){
 807     eval printf '%s\\n' $CC_E
 808 }
 809
 810 check_cc(){
 811     log check_cc "$@"
 812     cat > $TMPC
 813     log_file $TMPC
 814     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 815 }
 816
 817 check_cxx(){
 818     log check_cxx "$@"
 819     cat > $TMPCPP
 820     log_file $TMPCPP
 821     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 822 }
 823
 824 check_oc(){
 825     log check_oc "$@"
 826     cat > $TMPM
 827     log_file $TMPM
 828     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 829 }
 830
 831 check_cpp(){
 832     log check_cpp "$@"
 833     cat > $TMPC
 834     log_file $TMPC
 835     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 836 }
 837
 838 as_o(){
 839     eval printf '%s\\n' $AS_O
 840 }
 841
 842 check_as(){
 843     log check_as "$@"
 844     cat > $TMPS
 845     log_file $TMPS
 846     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 847 }
 848
 849 check_inline_asm(){
 850     log check_inline_asm "$@"
 851     name="$1"
 852     code="$2"
 853     shift 2
 854     disable $name
 855     check_cc "$@" <<EOF && enable $name
 856 void foo(void){ __asm__ volatile($code); }
 857 EOF
 858 }
 859
 860 check_insn(){
 861     log check_insn "$@"
 862     check_inline_asm ${1}_inline "\"$2\""
 863     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 864 }
 865
 866 check_yasm(){
 867     log check_yasm "$@"
 868     echo "$1" > $TMPS
 869     log_file $TMPS
 870     shift 1
 871     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 872 }
 873
 874 ld_o(){
 875     eval printf '%s\\n' $LD_O
 876 }
 877
 878 check_ld(){
 879     log check_ld "$@"
 880     type=$1
 881     shift 1
 882     flags=$(filter_out '-l*|*.so' $@)
 883     libs=$(filter '-l*|*.so' $@)
 884     check_$type $($cflags_filter $flags) || return
 885     flags=$($ldflags_filter $flags)
 886     libs=$($ldflags_filter $libs)
 887     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 888 }
 889
 890 print_include(){
 891     hdr=$1
 892     test "${hdr%.h}" = "${hdr}" &&
 893         echo "#include $hdr"    ||
 894         echo "#include <$hdr>"
 895 }
 896
 897 check_code(){
 898     log check_code "$@"
 899     check=$1
 900     headers=$2
 901     code=$3
 902     shift 3
 903     {
 904         for hdr in $headers; do
 905             print_include $hdr
 906         done
 907         echo "int main(void) { $code; return 0; }"
 908     } | check_$check "$@"
 909 }
 910
 911 check_cppflags(){
 912     log check_cppflags "$@"
 913     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 914 int x;
 915 EOF
 916 }
 917
 918 test_cflags(){
 919     log test_cflags "$@"
 920     set -- $($cflags_filter "$@")
 921     check_cc "$@" <<EOF
 922 int x;
 923 EOF
 924 }
 925
 926 check_cflags(){
 927     log check_cflags "$@"
 928     test_cflags "$@" && add_cflags "$@"
 929 }
 930
 931 check_cxxflags(){
 932     log check_cxxflags "$@"
 933     set -- $($cflags_filter "$@")
 934     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 935 int x;
 936 EOF
 937 }
 938
 939 test_ldflags(){
 940     log test_ldflags "$@"
 941     check_ld "cc" "$@" <<EOF
 942 int main(void){ return 0; }
 943 EOF
 944 }
 945
 946 check_ldflags(){
 947     log check_ldflags "$@"
 948     test_ldflags "$@" && add_ldflags "$@"
 949 }
 950
 951 test_stripflags(){
 952     log test_stripflags "$@"
 953     # call check_cc to get a fresh TMPO
 954     check_cc <<EOF
 955 int main(void) { return 0; }
 956 EOF
 957     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 958 }
 959
 960 check_stripflags(){
 961     log check_stripflags "$@"
 962     test_stripflags "$@" && add_stripflags "$@"
 963 }
 964
 965 check_header(){
 966     log check_header "$@"
 967     header=$1
 968     shift
 969     disable_safe $header
 970     check_cpp "$@" <<EOF && enable_safe $header
 971 #include <$header>
 972 int x;
 973 EOF
 974 }
 975
 976 check_header_oc(){
 977     log check_header_oc "$@"
 978     rm -f -- "$TMPO"
 979     header=$1
 980     shift
 981     disable_safe $header
 982     {
 983        echo "#include <$header>"
 984        echo "int main(void) { return 0; }"
 985     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 986 }
 987
 988 check_func(){
 989     log check_func "$@"
 990     func=$1
 991     shift
 992     disable $func
 993     check_ld "cc" "$@" <<EOF && enable $func
 994 extern int $func();
 995 int main(void){ $func(); }
 996 EOF
 997 }
 998
 999 check_mathfunc(){
1000     log check_mathfunc "$@"
1001     func=$1
1002     narg=$2
1003     shift 2
1004     test $narg = 2 && args="f, g" || args="f"
1005     disable $func
1006     check_ld "cc" "$@" <<EOF && enable $func
1007 #include <math.h>
1008 float foo(float f, float g) { return $func($args); }
1009 int main(void){ return (int) foo; }
1010 EOF
1011 }
1012
1013 check_func_headers(){
1014     log check_func_headers "$@"
1015     headers=$1
1016     funcs=$2
1017     shift 2
1018     {
1019         for hdr in $headers; do
1020             print_include $hdr
1021         done
1022         for func in $funcs; do
1023             echo "long check_$func(void) { return (long) $func; }"
1024         done
1025         echo "int main(void) { return 0; }"
1026     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1027 }
1028
1029 check_class_headers_cpp(){
1030     log check_class_headers_cpp "$@"
1031     headers=$1
1032     classes=$2
1033     shift 2
1034     {
1035         for hdr in $headers; do
1036             echo "#include <$hdr>"
1037         done
1038         echo "int main(void) { "
1039         i=1
1040         for class in $classes; do
1041             echo "$class obj$i;"
1042             i=$(expr $i + 1)
1043         done
1044         echo "return 0; }"
1045     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1046 }
1047
1048 check_cpp_condition(){
1049     log check_cpp_condition "$@"
1050     header=$1
1051     condition=$2
1052     shift 2
1053     check_cpp "$@" <<EOF
1054 #include <$header>
1055 #if !($condition)
1056 #error "unsatisfied condition: $condition"
1057 #endif
1058 EOF
1059 }
1060
1061 check_lib(){
1062     log check_lib "$@"
1063     header="$1"
1064     func="$2"
1065     shift 2
1066     check_header $header && check_func $func "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib2(){
1070     log check_lib2 "$@"
1071     headers="$1"
1072     funcs="$2"
1073     shift 2
1074     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_lib_cpp(){
1078     log check_lib_cpp "$@"
1079     headers="$1"
1080     classes="$2"
1081     shift 2
1082     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1083 }
1084
1085 check_pkg_config(){
1086     log check_pkg_config "$@"
1087     pkgandversion="$1"
1088     pkg="${1%% *}"
1089     headers="$2"
1090     funcs="$3"
1091     shift 3
1092     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1093     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1094     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1095     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1096         set_safe ${pkg}_cflags $pkg_cflags   &&
1097         set_safe ${pkg}_libs   $pkg_libs
1098 }
1099
1100 check_exec(){
1101     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1102 }
1103
1104 check_exec_crash(){
1105     code=$(cat)
1106
1107     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1108     # are safe but may not be available everywhere.  Thus we use
1109     # raise(SIGTERM) instead.  The check is run in a subshell so we
1110     # can redirect the "Terminated" message from the shell.  SIGBUS
1111     # is not defined by standard C so it is used conditionally.
1112
1113     (check_exec "$@") >> $logfile 2>&1 <<EOF
1114 #include <signal.h>
1115 static void sighandler(int sig){
1116     raise(SIGTERM);
1117 }
1118 int foo(void){
1119     $code
1120 }
1121 int (*func_ptr)(void) = foo;
1122 int main(void){
1123     signal(SIGILL, sighandler);
1124     signal(SIGFPE, sighandler);
1125     signal(SIGSEGV, sighandler);
1126 #ifdef SIGBUS
1127     signal(SIGBUS, sighandler);
1128 #endif
1129     return func_ptr();
1130 }
1131 EOF
1132 }
1133
1134 check_type(){
1135     log check_type "$@"
1136     headers=$1
1137     type=$2
1138     shift 2
1139     disable_safe "$type"
1140     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1141 }
1142
1143 check_struct(){
1144     log check_struct "$@"
1145     headers=$1
1146     struct=$2
1147     member=$3
1148     shift 3
1149     disable_safe "${struct}_${member}"
1150     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1151         enable_safe "${struct}_${member}"
1152 }
1153
1154 check_builtin(){
1155     log check_builtin "$@"
1156     name=$1
1157     headers=$2
1158     builtin=$3
1159     shift 3
1160     disable "$name"
1161     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1162 }
1163
1164 check_compile_assert(){
1165     log check_compile_assert "$@"
1166     name=$1
1167     headers=$2
1168     condition=$3
1169     shift 3
1170     disable "$name"
1171     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1172 }
1173
1174 require(){
1175     name="$1"
1176     header="$2"
1177     func="$3"
1178     shift 3
1179     check_lib $header $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require2(){
1183     name="$1"
1184     headers="$2"
1185     func="$3"
1186     shift 3
1187     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_cpp(){
1191     name="$1"
1192     headers="$2"
1193     classes="$3"
1194     shift 3
1195     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1196 }
1197
1198 require_pkg_config(){
1199     pkg="$1"
1200     check_pkg_config "$@" || die "ERROR: $pkg not found"
1201     add_cflags    $(get_safe ${pkg}_cflags)
1202     add_extralibs $(get_safe ${pkg}_libs)
1203 }
1204
1205 require_libfreetype(){
1206     log require_libfreetype "$@"
1207     pkg="freetype2"
1208     check_cmd $pkg_config --exists --print-errors $pkg \
1209       || die "ERROR: $pkg not found"
1210     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1211     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1212     {
1213         echo "#include <ft2build.h>"
1214         echo "#include FT_FREETYPE_H"
1215         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1216         echo "int main(void) { return 0; }"
1217     } | check_ld "cc" $pkg_cflags $pkg_libs \
1218       && set_safe ${pkg}_cflags $pkg_cflags \
1219       && set_safe ${pkg}_libs   $pkg_libs \
1220       || die "ERROR: $pkg not found"
1221     add_cflags    $(get_safe ${pkg}_cflags)
1222     add_extralibs $(get_safe ${pkg}_libs)
1223 }
1224
1225 hostcc_e(){
1226     eval printf '%s\\n' $HOSTCC_E
1227 }
1228
1229 hostcc_o(){
1230     eval printf '%s\\n' $HOSTCC_O
1231 }
1232
1233 check_host_cc(){
1234     log check_host_cc "$@"
1235     cat > $TMPC
1236     log_file $TMPC
1237     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1238 }
1239
1240 check_host_cpp(){
1241     log check_host_cpp "$@"
1242     cat > $TMPC
1243     log_file $TMPC
1244     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1245 }
1246
1247 check_host_cppflags(){
1248     log check_host_cppflags "$@"
1249     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cflags(){
1255     log check_host_cflags "$@"
1256     set -- $($host_cflags_filter "$@")
1257     check_host_cc "$@" <<EOF && append host_cflags "$@"
1258 int x;
1259 EOF
1260 }
1261
1262 check_host_cpp_condition(){
1263     log check_host_cpp_condition "$@"
1264     header=$1
1265     condition=$2
1266     shift 2
1267     check_host_cpp "$@" <<EOF
1268 #include <$header>
1269 #if !($condition)
1270 #error "unsatisfied condition: $condition"
1271 #endif
1272 EOF
1273 }
1274
1275 apply(){
1276     file=$1
1277     shift
1278     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1279 }
1280
1281 cp_if_changed(){
1282     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1283     mkdir -p "$(dirname $2)"
1284     $cp_f "$1" "$2"
1285 }
1286
1287 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1288 # system-dependent things.
1289
1290 COMPONENT_LIST="
1291     bsfs
1292     decoders
1293     demuxers
1294     encoders
1295     filters
1296     hwaccels
1297     indevs
1298     muxers
1299     outdevs
1300     parsers
1301     protocols
1302 "
1303
1304 EXAMPLE_LIST="
1305     avio_reading_example
1306     decoding_encoding_example
1307     demuxing_decoding_example
1308     filter_audio_example
1309     filtering_audio_example
1310     filtering_video_example
1311     metadata_example
1312     muxing_example
1313     remuxing_example
1314     resampling_audio_example
1315     scaling_video_example
1316     transcode_aac_example
1317     transcoding_example
1318 "
1319
1320 EXTERNAL_LIBRARY_LIST="
1321     avisynth
1322     bzlib
1323     crystalhd
1324     decklink
1325     frei0r
1326     gnutls
1327     iconv
1328     ladspa
1329     libaacplus
1330     libass
1331     libbluray
1332     libbs2b
1333     libcaca
1334     libcdio
1335     libcelt
1336     libdc1394
1337     libfaac
1338     libfdk_aac
1339     libflite
1340     libfontconfig
1341     libfreetype
1342     libfribidi
1343     libgme
1344     libgsm
1345     libiec61883
1346     libilbc
1347     libmodplug
1348     libmp3lame
1349     libnut
1350     libopencore_amrnb
1351     libopencore_amrwb
1352     libopencv
1353     libopenjpeg
1354     libopus
1355     libpulse
1356     libquvi
1357     librtmp
1358     libschroedinger
1359     libshine
1360     libsmbclient
1361     libsoxr
1362     libspeex
1363     libssh
1364     libstagefright_h264
1365     libtheora
1366     libtwolame
1367     libutvideo
1368     libv4l2
1369     libvidstab
1370     libvo_aacenc
1371     libvo_amrwbenc
1372     libvorbis
1373     libvpx
1374     libwavpack
1375     libwebp
1376     libx264
1377     libx265
1378     libxavs
1379     libxvid
1380     libzmq
1381     libzvbi
1382     openal
1383     opencl
1384     opengl
1385     openssl
1386     x11grab
1387     xlib
1388     zlib
1389 "
1390
1391 DOCUMENT_LIST="
1392     doc
1393     htmlpages
1394     manpages
1395     podpages
1396     txtpages
1397 "
1398
1399 FEATURE_LIST="
1400     ftrapv
1401     gray
1402     hardcoded_tables
1403     runtime_cpudetect
1404     safe_bitstream_reader
1405     shared
1406     small
1407     static
1408     swscale_alpha
1409 "
1410
1411 HWACCEL_LIST="
1412     dxva2
1413     vaapi
1414     vda
1415     vdpau
1416     xvmc
1417 "
1418
1419 LIBRARY_LIST="
1420     avcodec
1421     avdevice
1422     avfilter
1423     avformat
1424     avresample
1425     avutil
1426     postproc
1427     swresample
1428     swscale
1429 "
1430
1431 LICENSE_LIST="
1432     gpl
1433     nonfree
1434     version3
1435 "
1436
1437 PROGRAM_LIST="
1438     ffplay
1439     ffprobe
1440     ffserver
1441     ffmpeg
1442 "
1443
1444 SUBSYSTEM_LIST="
1445     dct
1446     dwt
1447     error_resilience
1448     fast_unaligned
1449     fft
1450     lsp
1451     lzo
1452     mdct
1453     pixelutils
1454     network
1455     rdft
1456 "
1457
1458 CONFIG_LIST="
1459     $COMPONENT_LIST
1460     $DOCUMENT_LIST
1461     $EXAMPLE_LIST
1462     $EXTERNAL_LIBRARY_LIST
1463     $FEATURE_LIST
1464     $HWACCEL_LIST
1465     $LICENSE_LIST
1466     $LIBRARY_LIST
1467     $PROGRAM_LIST
1468     $SUBSYSTEM_LIST
1469     fontconfig
1470     incompatible_libav_abi
1471     memalign_hack
1472     memory_poisoning
1473     neon_clobber_test
1474     pic
1475     pod2man
1476     raise_major
1477     thumb
1478     xmm_clobber_test
1479 "
1480
1481 THREADS_LIST="
1482     pthreads
1483     os2threads
1484     w32threads
1485 "
1486
1487 ATOMICS_LIST="
1488     atomics_gcc
1489     atomics_suncc
1490     atomics_win32
1491 "
1492
1493 ARCH_LIST="
1494     aarch64
1495     alpha
1496     arm
1497     avr32
1498     avr32_ap
1499     avr32_uc
1500     bfin
1501     ia64
1502     m68k
1503     mips
1504     mips64
1505     parisc
1506     ppc
1507     ppc64
1508     s390
1509     sh4
1510     sparc
1511     sparc64
1512     tilegx
1513     tilepro
1514     tomi
1515     x86
1516     x86_32
1517     x86_64
1518 "
1519
1520 ARCH_EXT_LIST_ARM="
1521     armv5te
1522     armv6
1523     armv6t2
1524     armv8
1525     neon
1526     vfp
1527     vfpv3
1528     setend
1529 "
1530
1531 ARCH_EXT_LIST_MIPS="
1532     mipsfpu
1533     mips32r2
1534     mipsdspr1
1535     mipsdspr2
1536 "
1537
1538 ARCH_EXT_LIST_X86_SIMD="
1539     amd3dnow
1540     amd3dnowext
1541     avx
1542     avx2
1543     fma3
1544     fma4
1545     mmx
1546     mmxext
1547     sse
1548     sse2
1549     sse3
1550     sse4
1551     sse42
1552     ssse3
1553     xop
1554 "
1555
1556 ARCH_EXT_LIST_PPC="
1557     altivec
1558     dcbzl
1559     ldbrx
1560     ppc4xx
1561     vsx
1562 "
1563
1564 ARCH_EXT_LIST_X86="
1565     $ARCH_EXT_LIST_X86_SIMD
1566     cpunop
1567     i686
1568 "
1569
1570 ARCH_EXT_LIST="
1571     $ARCH_EXT_LIST_ARM
1572     $ARCH_EXT_LIST_PPC
1573     $ARCH_EXT_LIST_X86
1574     $ARCH_EXT_LIST_MIPS
1575     loongson
1576 "
1577
1578 ARCH_FEATURES="
1579     aligned_stack
1580     fast_64bit
1581     fast_clz
1582     fast_cmov
1583     local_aligned_8
1584     local_aligned_16
1585     local_aligned_32
1586     simd_align_16
1587 "
1588
1589 BUILTIN_LIST="
1590     atomic_cas_ptr
1591     machine_rw_barrier
1592     MemoryBarrier
1593     mm_empty
1594     rdtsc
1595     sarestart
1596     sync_val_compare_and_swap
1597 "
1598 HAVE_LIST_CMDLINE="
1599     inline_asm
1600     symver
1601     yasm
1602 "
1603
1604 HAVE_LIST_PUB="
1605     bigendian
1606     fast_unaligned
1607     incompatible_libav_abi
1608 "
1609
1610 HEADERS_LIST="
1611     alsa_asoundlib_h
1612     altivec_h
1613     arpa_inet_h
1614     asm_types_h
1615     cdio_paranoia_h
1616     cdio_paranoia_paranoia_h
1617     CL_cl_h
1618     dev_bktr_ioctl_bt848_h
1619     dev_bktr_ioctl_meteor_h
1620     dev_ic_bt8xx_h
1621     dev_video_bktr_ioctl_bt848_h
1622     dev_video_meteor_ioctl_meteor_h
1623     direct_h
1624     dlfcn_h
1625     dxva_h
1626     ES2_gl_h
1627     gsm_h
1628     io_h
1629     mach_mach_time_h
1630     machine_ioctl_bt848_h
1631     machine_ioctl_meteor_h
1632     malloc_h
1633     openjpeg_1_5_openjpeg_h
1634     OpenGL_gl3_h
1635     poll_h
1636     sndio_h
1637     soundcard_h
1638     sys_mman_h
1639     sys_param_h
1640     sys_resource_h
1641     sys_select_h
1642     sys_soundcard_h
1643     sys_time_h
1644     sys_un_h
1645     sys_videoio_h
1646     termios_h
1647     unistd_h
1648     windows_h
1649     winsock2_h
1650 "
1651
1652 INTRINSICS_LIST="
1653     intrinsics_neon
1654 "
1655
1656 MATH_FUNCS="
1657     atanf
1658     atan2f
1659     cbrt
1660     cbrtf
1661     cosf
1662     exp2
1663     exp2f
1664     expf
1665     fminf
1666     isinf
1667     isnan
1668     ldexpf
1669     llrint
1670     llrintf
1671     log2
1672     log2f
1673     log10f
1674     lrint
1675     lrintf
1676     powf
1677     rint
1678     round
1679     roundf
1680     sinf
1681     trunc
1682     truncf
1683 "
1684
1685 SYSTEM_FUNCS="
1686     access
1687     aligned_malloc
1688     clock_gettime
1689     closesocket
1690     CommandLineToArgvW
1691     CoTaskMemFree
1692     CryptGenRandom
1693     dlopen
1694     fcntl
1695     flt_lim
1696     fork
1697     getaddrinfo
1698     gethrtime
1699     getopt
1700     GetProcessAffinityMask
1701     GetProcessMemoryInfo
1702     GetProcessTimes
1703     getrusage
1704     getservbyport
1705     GetSystemTimeAsFileTime
1706     gettimeofday
1707     glob
1708     glXGetProcAddress
1709     inet_aton
1710     isatty
1711     jack_port_get_latency_range
1712     kbhit
1713     localtime_r
1714     lzo1x_999_compress
1715     mach_absolute_time
1716     MapViewOfFile
1717     memalign
1718     mkstemp
1719     mmap
1720     mprotect
1721     nanosleep
1722     PeekNamedPipe
1723     posix_memalign
1724     pthread_cancel
1725     sched_getaffinity
1726     SetConsoleTextAttribute
1727     setmode
1728     setrlimit
1729     Sleep
1730     strerror_r
1731     sysconf
1732     sysctl
1733     usleep
1734     VirtualAlloc
1735     wglGetProcAddress
1736 "
1737
1738 TOOLCHAIN_FEATURES="
1739     as_dn_directive
1740     as_func
1741     asm_mod_q
1742     attribute_may_alias
1743     attribute_packed
1744     ebp_available
1745     ebx_available
1746     gnu_as
1747     gnu_windres
1748     ibm_asm
1749     inline_asm_labels
1750     inline_asm_nonlocal_labels
1751     inline_asm_direct_symbol_refs
1752     pragma_deprecated
1753     rsync_contimeout
1754     symver_asm_label
1755     symver_gnu_asm
1756     vfp_args
1757     xform_asm
1758     xmm_clobbers
1759 "
1760
1761 TYPES_LIST="
1762     socklen_t
1763     struct_addrinfo
1764     struct_group_source_req
1765     struct_ip_mreq_source
1766     struct_ipv6_mreq
1767     struct_pollfd
1768     struct_rusage_ru_maxrss
1769     struct_sctp_event_subscribe
1770     struct_sockaddr_in6
1771     struct_sockaddr_sa_len
1772     struct_sockaddr_storage
1773     struct_stat_st_mtim_tv_nsec
1774     struct_v4l2_frmivalenum_discrete
1775 "
1776
1777 HAVE_LIST="
1778     $ARCH_EXT_LIST
1779     $(add_suffix _external $ARCH_EXT_LIST)
1780     $(add_suffix _inline   $ARCH_EXT_LIST)
1781     $ARCH_FEATURES
1782     $ATOMICS_LIST
1783     $BUILTIN_LIST
1784     $HAVE_LIST_CMDLINE
1785     $HAVE_LIST_PUB
1786     $HEADERS_LIST
1787     $INTRINSICS_LIST
1788     $MATH_FUNCS
1789     $SYSTEM_FUNCS
1790     $THREADS_LIST
1791     $TOOLCHAIN_FEATURES
1792     $TYPES_LIST
1793     atomics_native
1794     dos_paths
1795     dxva2api_cobj
1796     dxva2_lib
1797     libc_msvcrt
1798     libdc1394_1
1799     libdc1394_2
1800     makeinfo
1801     perl
1802     pod2man
1803     sdl
1804     texi2html
1805     threads
1806     vdpau_x11
1807     xlib
1808 "
1809
1810 # options emitted with CONFIG_ prefix but not available on the command line
1811 CONFIG_EXTRA="
1812     aandcttables
1813     ac3dsp
1814     audio_frame_queue
1815     audiodsp
1816     blockdsp
1817     bswapdsp
1818     cabac
1819     dvprofile
1820     exif
1821     fdctdsp
1822     frame_thread_encoder
1823     gcrypt
1824     golomb
1825     gplv3
1826     h263dsp
1827     h264chroma
1828     h264dsp
1829     h264pred
1830     h264qpel
1831     hpeldsp
1832     huffman
1833     huffyuvdsp
1834     huffyuvencdsp
1835     idctdsp
1836     iirfilter
1837     intrax8
1838     lgplv3
1839     llauddsp
1840     llviddsp
1841     lpc
1842     me_cmp
1843     mpeg_er
1844     mpegaudio
1845     mpegaudiodsp
1846     mpegvideo
1847     mpegvideoenc
1848     nettle
1849     pixblockdsp
1850     qpeldsp
1851     rangecoder
1852     riffdec
1853     riffenc
1854     rtpdec
1855     rtpenc_chain
1856     sinewin
1857     startcode
1858     tpeldsp
1859     videodsp
1860     vp3dsp
1861 "
1862
1863 CMDLINE_SELECT="
1864     $ARCH_EXT_LIST
1865     $CONFIG_LIST
1866     $HAVE_LIST_CMDLINE
1867     $THREADS_LIST
1868     asm
1869     cross_compile
1870     debug
1871     extra_warnings
1872     logging
1873     lto
1874     optimizations
1875     rpath
1876     stripping
1877 "
1878
1879 PATHS_LIST="
1880     bindir
1881     datadir
1882     docdir
1883     incdir
1884     libdir
1885     mandir
1886     prefix
1887     shlibdir
1888 "
1889
1890 CMDLINE_SET="
1891     $PATHS_LIST
1892     ar
1893     arch
1894     as
1895     assert_level
1896     build_suffix
1897     cc
1898     cpu
1899     cross_prefix
1900     cxx
1901     dep_cc
1902     doxygen
1903     extra_version
1904     gas
1905     host_cc
1906     host_cflags
1907     host_ld
1908     host_ldflags
1909     host_libs
1910     host_os
1911     install
1912     ld
1913     logfile
1914     malloc_prefix
1915     nm
1916     optflags
1917     pkg_config
1918     pkg_config_flags
1919     progs_suffix
1920     random_seed
1921     ranlib
1922     samples
1923     strip
1924     sws_max_filter_size
1925     sysinclude
1926     sysroot
1927     target_exec
1928     target_os
1929     target_path
1930     target_samples
1931     tempprefix
1932     toolchain
1933     valgrind
1934     yasmexe
1935 "
1936
1937 CMDLINE_APPEND="
1938     extra_cflags
1939     extra_cxxflags
1940     host_cppflags
1941 "
1942
1943 # code dependency declarations
1944
1945 # architecture extensions
1946
1947 armv5te_deps="arm"
1948 armv6_deps="arm"
1949 armv6t2_deps="arm"
1950 armv8_deps="aarch64"
1951 neon_deps_any="aarch64 arm"
1952 intrinsics_neon_deps="neon"
1953 vfp_deps_any="aarch64 arm"
1954 vfpv3_deps="vfp"
1955 setend_deps="arm"
1956
1957 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1958
1959 mipsfpu_deps="mips"
1960 mips32r2_deps="mips"
1961 mipsdspr1_deps="mips"
1962 mipsdspr2_deps="mips"
1963
1964 altivec_deps="ppc"
1965 ppc4xx_deps="ppc"
1966 vsx_deps="ppc"
1967
1968 cpunop_deps="i686"
1969 x86_64_select="i686"
1970 x86_64_suggest="fast_cmov"
1971
1972 amd3dnow_deps="mmx"
1973 amd3dnowext_deps="amd3dnow"
1974 i686_deps="x86"
1975 mmx_deps="x86"
1976 mmxext_deps="mmx"
1977 sse_deps="mmxext"
1978 sse2_deps="sse"
1979 sse3_deps="sse2"
1980 ssse3_deps="sse3"
1981 sse4_deps="ssse3"
1982 sse42_deps="sse4"
1983 avx_deps="sse42"
1984 xop_deps="avx"
1985 fma3_deps="avx"
1986 fma4_deps="avx"
1987 avx2_deps="avx"
1988
1989 mmx_external_deps="yasm"
1990 mmx_inline_deps="inline_asm"
1991 mmx_suggest="mmx_external mmx_inline"
1992
1993 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1994     eval dep=\$${ext}_deps
1995     eval ${ext}_external_deps='"${dep}_external"'
1996     eval ${ext}_inline_deps='"${dep}_inline"'
1997     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1998 done
1999
2000 aligned_stack_if_any="aarch64 ppc x86"
2001 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2002 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2003 fast_unaligned_if_any="aarch64 ppc x86"
2004 simd_align_16_if_any="altivec neon sse"
2005
2006 # system capabilities
2007
2008 symver_if_any="symver_asm_label symver_gnu_asm"
2009
2010 # threading support
2011 atomics_gcc_if="sync_val_compare_and_swap"
2012 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2013 atomics_win32_if="MemoryBarrier"
2014 atomics_native_if_any="$ATOMICS_LIST"
2015 w32threads_deps="atomics_native"
2016 threads_if_any="$THREADS_LIST"
2017
2018 # subsystems
2019 dct_select="rdft"
2020 error_resilience_select="me_cmp"
2021 frame_thread_encoder_deps="encoders threads"
2022 intrax8_select="error_resilience"
2023 mdct_select="fft"
2024 rdft_select="fft"
2025 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2026 mpeg_er_select="error_resilience"
2027 mpegaudio_select="mpegaudiodsp"
2028 mpegaudiodsp_select="dct"
2029 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2030 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2031
2032 # decoders / encoders
2033 aac_decoder_select="mdct sinewin"
2034 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2035 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2036 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2037 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2038 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2039 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2040 aic_decoder_select="golomb idctdsp"
2041 alac_encoder_select="lpc"
2042 als_decoder_select="bswapdsp"
2043 amrnb_decoder_select="lsp"
2044 amrwb_decoder_select="lsp"
2045 amv_decoder_select="sp5x_decoder exif"
2046 amv_encoder_select="aandcttables mpegvideoenc"
2047 ape_decoder_select="bswapdsp llauddsp"
2048 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2049 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2050 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2051 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2052 atrac1_decoder_select="mdct sinewin"
2053 atrac3_decoder_select="mdct"
2054 atrac3p_decoder_select="mdct sinewin"
2055 avrn_decoder_select="exif"
2056 bink_decoder_select="blockdsp hpeldsp"
2057 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2058 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2059 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2060 cllc_decoder_select="bswapdsp"
2061 comfortnoise_encoder_select="lpc"
2062 cook_decoder_select="audiodsp mdct sinewin"
2063 cscd_decoder_select="lzo"
2064 cscd_decoder_suggest="zlib"
2065 dca_decoder_select="mdct"
2066 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2067 dnxhd_decoder_select="blockdsp idctdsp"
2068 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2069 dvvideo_decoder_select="dvprofile idctdsp"
2070 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2071 dxa_decoder_select="zlib"
2072 eac3_decoder_select="ac3_decoder"
2073 eac3_encoder_select="ac3_encoder"
2074 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2075 eatgq_decoder_select="aandcttables"
2076 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2077 exr_decoder_select="zlib"
2078 ffv1_decoder_select="golomb rangecoder"
2079 ffv1_encoder_select="rangecoder"
2080 ffvhuff_decoder_select="huffyuv_decoder"
2081 ffvhuff_encoder_select="huffyuv_encoder"
2082 fic_decoder_select="golomb"
2083 flac_decoder_select="golomb"
2084 flac_encoder_select="bswapdsp golomb lpc"
2085 flashsv_decoder_select="zlib"
2086 flashsv_encoder_select="zlib"
2087 flashsv2_encoder_select="zlib"
2088 flashsv2_decoder_select="zlib"
2089 flv_decoder_select="h263_decoder"
2090 flv_encoder_select="h263_encoder"
2091 fourxm_decoder_select="blockdsp bswapdsp"
2092 fraps_decoder_select="bswapdsp huffman"
2093 g2m_decoder_select="blockdsp idctdsp zlib"
2094 g729_decoder_select="audiodsp"
2095 h261_decoder_select="mpeg_er mpegvideo"
2096 h261_encoder_select="aandcttables mpegvideoenc"
2097 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2098 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2099 h263i_decoder_select="h263_decoder"
2100 h263p_encoder_select="h263_encoder"
2101 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2102 h264_decoder_suggest="error_resilience"
2103 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2104 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2105 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2106 iac_decoder_select="imc_decoder"
2107 imc_decoder_select="bswapdsp fft mdct sinewin"
2108 indeo3_decoder_select="hpeldsp"
2109 interplay_video_decoder_select="hpeldsp"
2110 jpegls_decoder_select="golomb mjpeg_decoder"
2111 jpegls_encoder_select="golomb"
2112 jv_decoder_select="blockdsp"
2113 lagarith_decoder_select="huffyuvdsp"
2114 ljpeg_encoder_select="aandcttables idctdsp"
2115 loco_decoder_select="golomb"
2116 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2117 metasound_decoder_select="lsp mdct sinewin"
2118 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2119 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2120 mjpeg_encoder_select="aandcttables mpegvideoenc"
2121 mjpegb_decoder_select="mjpeg_decoder"
2122 mlp_decoder_select="mlp_parser"
2123 motionpixels_decoder_select="bswapdsp"
2124 mp1_decoder_select="mpegaudio"
2125 mp1float_decoder_select="mpegaudio"
2126 mp2_decoder_select="mpegaudio"
2127 mp2float_decoder_select="mpegaudio"
2128 mp3_decoder_select="mpegaudio"
2129 mp3adu_decoder_select="mpegaudio"
2130 mp3adufloat_decoder_select="mpegaudio"
2131 mp3float_decoder_select="mpegaudio"
2132 mp3on4_decoder_select="mpegaudio"
2133 mp3on4float_decoder_select="mpegaudio"
2134 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2135 mpc8_decoder_select="mpegaudiodsp"
2136 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2137 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2138 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2139 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2140 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2141 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2142 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2143 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2144 mpeg4_encoder_select="h263_encoder"
2145 msmpeg4v1_decoder_select="h263_decoder"
2146 msmpeg4v2_decoder_select="h263_decoder"
2147 msmpeg4v2_encoder_select="h263_encoder"
2148 msmpeg4v3_decoder_select="h263_decoder"
2149 msmpeg4v3_encoder_select="h263_encoder"
2150 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2151 mxpeg_decoder_select="mjpeg_decoder"
2152 nellymoser_decoder_select="mdct sinewin"
2153 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2154 nuv_decoder_select="idctdsp lzo"
2155 on2avc_decoder_select="mdct"
2156 opus_decoder_deps="swresample"
2157 png_decoder_select="zlib"
2158 png_encoder_select="huffyuvencdsp zlib"
2159 prores_decoder_select="blockdsp idctdsp"
2160 prores_encoder_select="fdctdsp"
2161 qcelp_decoder_select="lsp"
2162 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2163 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2164 ra_144_decoder_select="audiodsp"
2165 ralf_decoder_select="golomb"
2166 rawvideo_decoder_select="bswapdsp"
2167 rtjpeg_decoder_select="me_cmp"
2168 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2169 rv10_encoder_select="h263_encoder"
2170 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2171 rv20_encoder_select="h263_encoder"
2172 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2173 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2174 shorten_decoder_select="golomb"
2175 sipr_decoder_select="lsp"
2176 snow_decoder_select="dwt h264qpel hpeldsp rangecoder"
2177 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2178 sonic_decoder_select="golomb rangecoder"
2179 sonic_encoder_select="golomb rangecoder"
2180 sonic_ls_encoder_select="golomb rangecoder"
2181 sp5x_decoder_select="mjpeg_decoder"
2182 svq1_decoder_select="hpeldsp"
2183 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2184 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2185 svq3_decoder_suggest="zlib"
2186 tak_decoder_select="audiodsp"
2187 theora_decoder_select="vp3_decoder"
2188 thp_decoder_select="mjpeg_decoder"
2189 tiff_decoder_suggest="zlib"
2190 tiff_encoder_suggest="zlib"
2191 truehd_decoder_select="mlp_parser"
2192 truemotion2_decoder_select="bswapdsp"
2193 truespeech_decoder_select="bswapdsp"
2194 tscc_decoder_select="zlib"
2195 twinvq_decoder_select="mdct lsp sinewin"
2196 utvideo_decoder_select="bswapdsp"
2197 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2198 vble_decoder_select="huffyuvdsp"
2199 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2200 vc1image_decoder_select="vc1_decoder"
2201 vorbis_decoder_select="mdct"
2202 vorbis_encoder_select="mdct"
2203 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2204 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2205 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2206 vp6a_decoder_select="vp6_decoder"
2207 vp6f_decoder_select="vp6_decoder"
2208 vp7_decoder_select="h264pred videodsp"
2209 vp8_decoder_select="h264pred videodsp"
2210 vp9_decoder_select="videodsp vp9_parser"
2211 webp_decoder_select="vp8_decoder"
2212 wmalossless_decoder_select="llauddsp"
2213 wmapro_decoder_select="mdct sinewin"
2214 wmav1_decoder_select="mdct sinewin"
2215 wmav1_encoder_select="mdct sinewin"
2216 wmav2_decoder_select="mdct sinewin"
2217 wmav2_encoder_select="mdct sinewin"
2218 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2219 wmv1_decoder_select="h263_decoder"
2220 wmv1_encoder_select="h263_encoder"
2221 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2222 wmv2_encoder_select="h263_encoder"
2223 wmv3_decoder_select="vc1_decoder"
2224 wmv3image_decoder_select="wmv3_decoder"
2225 zerocodec_decoder_select="zlib"
2226 zlib_decoder_select="zlib"
2227 zlib_encoder_select="zlib"
2228 zmbv_decoder_select="zlib"
2229 zmbv_encoder_select="zlib"
2230
2231 # hardware accelerators
2232 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2233 dxva2_deps="dxva2api_h"
2234 vaapi_deps="va_va_h"
2235 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2236 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2237 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2238 xvmc_deps="X11_extensions_XvMClib_h"
2239
2240 h263_vaapi_hwaccel_deps="vaapi"
2241 h263_vaapi_hwaccel_select="h263_decoder"
2242 h263_vdpau_hwaccel_deps="vdpau"
2243 h263_vdpau_hwaccel_select="h263_decoder"
2244 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2245 h264_dxva2_hwaccel_deps="dxva2"
2246 h264_dxva2_hwaccel_select="h264_decoder"
2247 h264_vaapi_hwaccel_deps="vaapi"
2248 h264_vaapi_hwaccel_select="h264_decoder"
2249 h264_vda_decoder_deps="vda"
2250 h264_vda_decoder_select="h264_decoder"
2251 h264_vda_hwaccel_deps="vda"
2252 h264_vda_hwaccel_select="h264_decoder"
2253 h264_vda_old_hwaccel_deps="vda"
2254 h264_vda_old_hwaccel_select="h264_decoder"
2255 h264_vdpau_decoder_deps="vdpau"
2256 h264_vdpau_decoder_select="h264_decoder"
2257 h264_vdpau_hwaccel_deps="vdpau"
2258 h264_vdpau_hwaccel_select="h264_decoder"
2259 mpeg_vdpau_decoder_deps="vdpau"
2260 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2261 mpeg_xvmc_hwaccel_deps="xvmc"
2262 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2263 mpeg1_vdpau_decoder_deps="vdpau"
2264 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2265 mpeg1_vdpau_hwaccel_deps="vdpau"
2266 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2267 mpeg1_xvmc_hwaccel_deps="xvmc"
2268 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2269 mpeg2_crystalhd_decoder_select="crystalhd"
2270 mpeg2_dxva2_hwaccel_deps="dxva2"
2271 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2272 mpeg2_vaapi_hwaccel_deps="vaapi"
2273 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2274 mpeg2_vdpau_hwaccel_deps="vdpau"
2275 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2276 mpeg2_xvmc_hwaccel_deps="xvmc"
2277 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2278 mpeg4_crystalhd_decoder_select="crystalhd"
2279 mpeg4_vaapi_hwaccel_deps="vaapi"
2280 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2281 mpeg4_vdpau_decoder_deps="vdpau"
2282 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2283 mpeg4_vdpau_hwaccel_deps="vdpau"
2284 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2285 msmpeg4_crystalhd_decoder_select="crystalhd"
2286 vc1_crystalhd_decoder_select="crystalhd"
2287 vc1_dxva2_hwaccel_deps="dxva2"
2288 vc1_dxva2_hwaccel_select="vc1_decoder"
2289 vc1_vaapi_hwaccel_deps="vaapi"
2290 vc1_vaapi_hwaccel_select="vc1_decoder"
2291 vc1_vdpau_decoder_deps="vdpau"
2292 vc1_vdpau_decoder_select="vc1_decoder"
2293 vc1_vdpau_hwaccel_deps="vdpau"
2294 vc1_vdpau_hwaccel_select="vc1_decoder"
2295 wmv3_crystalhd_decoder_select="crystalhd"
2296 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2297 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2298 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2299 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2300
2301 # parsers
2302 h264_parser_select="h264_decoder"
2303 hevc_parser_select="hevc_decoder"
2304 mpegvideo_parser_select="mpegvideo"
2305 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2306 vc1_parser_select="mpegvideo startcode vc1_decoder"
2307
2308 # external libraries
2309 libaacplus_encoder_deps="libaacplus"
2310 libcelt_decoder_deps="libcelt"
2311 libfaac_encoder_deps="libfaac"
2312 libfaac_encoder_select="audio_frame_queue"
2313 libfdk_aac_decoder_deps="libfdk_aac"
2314 libfdk_aac_encoder_deps="libfdk_aac"
2315 libfdk_aac_encoder_select="audio_frame_queue"
2316 libgme_demuxer_deps="libgme"
2317 libgsm_decoder_deps="libgsm"
2318 libgsm_encoder_deps="libgsm"
2319 libgsm_ms_decoder_deps="libgsm"
2320 libgsm_ms_encoder_deps="libgsm"
2321 libilbc_decoder_deps="libilbc"
2322 libilbc_encoder_deps="libilbc"
2323 libmodplug_demuxer_deps="libmodplug"
2324 libmp3lame_encoder_deps="libmp3lame"
2325 libmp3lame_encoder_select="audio_frame_queue"
2326 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2327 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2328 libopencore_amrnb_encoder_select="audio_frame_queue"
2329 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2330 libopenjpeg_decoder_deps="libopenjpeg"
2331 libopenjpeg_encoder_deps="libopenjpeg"
2332 libopus_decoder_deps="libopus"
2333 libopus_encoder_deps="libopus"
2334 libopus_encoder_select="audio_frame_queue"
2335 libquvi_demuxer_deps="libquvi"
2336 libschroedinger_decoder_deps="libschroedinger"
2337 libschroedinger_encoder_deps="libschroedinger"
2338 libshine_encoder_deps="libshine"
2339 libshine_encoder_select="audio_frame_queue"
2340 libspeex_decoder_deps="libspeex"
2341 libspeex_encoder_deps="libspeex"
2342 libspeex_encoder_select="audio_frame_queue"
2343 libstagefright_h264_decoder_deps="libstagefright_h264"
2344 libtheora_encoder_deps="libtheora"
2345 libtwolame_encoder_deps="libtwolame"
2346 libvo_aacenc_encoder_deps="libvo_aacenc"
2347 libvo_aacenc_encoder_select="audio_frame_queue"
2348 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2349 libvorbis_decoder_deps="libvorbis"
2350 libvorbis_encoder_deps="libvorbis"
2351 libvorbis_encoder_select="audio_frame_queue"
2352 libvpx_vp8_decoder_deps="libvpx"
2353 libvpx_vp8_encoder_deps="libvpx"
2354 libvpx_vp9_decoder_deps="libvpx"
2355 libvpx_vp9_encoder_deps="libvpx"
2356 libwavpack_encoder_deps="libwavpack"
2357 libwebp_encoder_deps="libwebp"
2358 libx264_encoder_deps="libx264"
2359 libx264rgb_encoder_deps="libx264"
2360 libx265_encoder_deps="libx265"
2361 libxavs_encoder_deps="libxavs"
2362 libxvid_encoder_deps="libxvid"
2363 libutvideo_decoder_deps="libutvideo"
2364 libutvideo_encoder_deps="libutvideo"
2365 libzvbi_teletext_decoder_deps="libzvbi"
2366
2367 # demuxers / muxers
2368 ac3_demuxer_select="ac3_parser"
2369 asf_demuxer_select="riffdec"
2370 asf_muxer_select="riffenc"
2371 asf_stream_muxer_select="asf_muxer"
2372 avi_demuxer_select="riffdec exif"
2373 avi_muxer_select="riffenc"
2374 avisynth_demuxer_deps="avisynth"
2375 avisynth_demuxer_select="riffdec"
2376 caf_demuxer_select="riffdec"
2377 dirac_demuxer_select="dirac_parser"
2378 dts_demuxer_select="dca_parser"
2379 dtshd_demuxer_select="dca_parser"
2380 dv_demuxer_select="dvprofile"
2381 dv_muxer_select="dvprofile"
2382 dxa_demuxer_select="riffdec"
2383 eac3_demuxer_select="ac3_parser"
2384 f4v_muxer_select="mov_muxer"
2385 flac_demuxer_select="flac_parser"
2386 hds_muxer_select="flv_muxer"
2387 hls_muxer_select="mpegts_muxer"
2388 image2_alias_pix_demuxer_select="image2_demuxer"
2389 image2_brender_pix_demuxer_select="image2_demuxer"
2390 ipod_muxer_select="mov_muxer"
2391 ismv_muxer_select="mov_muxer"
2392 libnut_demuxer_deps="libnut"
2393 libnut_muxer_deps="libnut"
2394 matroska_audio_muxer_select="matroska_muxer"
2395 matroska_demuxer_select="riffdec"
2396 matroska_demuxer_suggest="bzlib lzo zlib"
2397 matroska_muxer_select="riffenc"
2398 mmf_muxer_select="riffenc"
2399 mov_demuxer_select="riffdec"
2400 mov_demuxer_suggest="zlib"
2401 mov_muxer_select="riffenc rtpenc_chain"
2402 mp3_demuxer_select="mpegaudio_parser"
2403 mp4_muxer_select="mov_muxer"
2404 mpegts_muxer_select="adts_muxer latm_muxer"
2405 mpegtsraw_demuxer_select="mpegts_demuxer"
2406 mxf_d10_muxer_select="mxf_muxer"
2407 nut_muxer_select="riffenc"
2408 nuv_demuxer_select="riffdec"
2409 ogg_demuxer_select="golomb"
2410 psp_muxer_select="mov_muxer"
2411 rtp_demuxer_select="sdp_demuxer"
2412 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2413 rtsp_demuxer_select="http_protocol rtpdec"
2414 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2415 sap_demuxer_select="sdp_demuxer"
2416 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2417 sdp_demuxer_select="rtpdec"
2418 smoothstreaming_muxer_select="ismv_muxer"
2419 spdif_muxer_select="aac_parser"
2420 tak_demuxer_select="tak_parser"
2421 tg2_muxer_select="mov_muxer"
2422 tgp_muxer_select="mov_muxer"
2423 vobsub_demuxer_select="mpegps_demuxer"
2424 w64_demuxer_select="wav_demuxer"
2425 w64_muxer_select="wav_muxer"
2426 wav_demuxer_select="riffdec"
2427 wav_muxer_select="riffenc"
2428 webm_muxer_select="riffenc"
2429 wtv_demuxer_select="riffdec"
2430 wtv_muxer_select="riffenc"
2431 xmv_demuxer_select="riffdec"
2432 xwma_demuxer_select="riffdec"
2433
2434 # indevs / outdevs
2435 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2436 alsa_outdev_deps="alsa_asoundlib_h"
2437 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2438 avfoundation_indev_select="avfoundation"
2439 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2440 caca_outdev_deps="libcaca"
2441 decklink_outdev_deps="decklink pthreads"
2442 decklink_outdev_extralibs="-lstdc++"
2443 dshow_indev_deps="IBaseFilter"
2444 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2445 dv1394_indev_deps="dv1394"
2446 dv1394_indev_select="dv_demuxer"
2447 fbdev_indev_deps="linux_fb_h"
2448 fbdev_outdev_deps="linux_fb_h"
2449 gdigrab_indev_deps="CreateDIBSection"
2450 gdigrab_indev_extralibs="-lgdi32"
2451 gdigrab_indev_select="bmp_decoder"
2452 iec61883_indev_deps="libiec61883"
2453 jack_indev_deps="jack_jack_h sem_timedwait"
2454 lavfi_indev_deps="avfilter"
2455 libcdio_indev_deps="libcdio"
2456 libdc1394_indev_deps="libdc1394"
2457 libv4l2_indev_deps="libv4l2"
2458 openal_indev_deps="openal"
2459 opengl_outdev_deps="opengl"
2460 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2461 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2462 pulse_indev_deps="libpulse"
2463 pulse_outdev_deps="libpulse"
2464 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2465 qtkit_indev_select="qtkit"
2466 sdl_outdev_deps="sdl"
2467 sndio_indev_deps="sndio_h"
2468 sndio_outdev_deps="sndio_h"
2469 v4l_indev_deps="linux_videodev_h"
2470 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2471 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2472 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2473 vfwcap_indev_extralibs="-lavicap32"
2474 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2475 xv_outdev_extralibs="-lXv -lX11 -lXext"
2476 x11grab_indev_deps="x11grab"
2477
2478 # protocols
2479 bluray_protocol_deps="libbluray"
2480 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2481 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2482 ffrtmpcrypt_protocol_select="tcp_protocol"
2483 ffrtmphttp_protocol_deps="!librtmp_protocol"
2484 ffrtmphttp_protocol_select="http_protocol"
2485 ftp_protocol_select="tcp_protocol"
2486 gopher_protocol_select="network"
2487 http_protocol_select="tcp_protocol"
2488 httpproxy_protocol_select="tcp_protocol"
2489 https_protocol_select="tls_protocol"
2490 icecast_protocol_select="http_protocol"
2491 librtmp_protocol_deps="librtmp"
2492 librtmpe_protocol_deps="librtmp"
2493 librtmps_protocol_deps="librtmp"
2494 librtmpt_protocol_deps="librtmp"
2495 librtmpte_protocol_deps="librtmp"
2496 libsmbclient_protocol_deps="libsmbclient gplv3"
2497 libssh_protocol_deps="libssh"
2498 mmsh_protocol_select="http_protocol"
2499 mmst_protocol_select="network"
2500 rtmp_protocol_deps="!librtmp_protocol"
2501 rtmp_protocol_select="tcp_protocol"
2502 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2503 rtmps_protocol_deps="!librtmp_protocol"
2504 rtmps_protocol_select="tls_protocol"
2505 rtmpt_protocol_select="ffrtmphttp_protocol"
2506 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2507 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2508 rtp_protocol_select="udp_protocol"
2509 sctp_protocol_deps="struct_sctp_event_subscribe"
2510 sctp_protocol_select="network"
2511 srtp_protocol_select="rtp_protocol"
2512 tcp_protocol_select="network"
2513 tls_protocol_deps_any="openssl gnutls"
2514 tls_protocol_select="tcp_protocol"
2515 udp_protocol_select="network"
2516 unix_protocol_deps="sys_un_h"
2517 unix_protocol_select="network"
2518
2519 # filters
2520 aconvert_filter_deps="swresample"
2521 amovie_filter_deps="avcodec avformat"
2522 aresample_filter_deps="swresample"
2523 ass_filter_deps="libass"
2524 asyncts_filter_deps="avresample"
2525 atempo_filter_deps="avcodec"
2526 atempo_filter_select="rdft"
2527 azmq_filter_deps="libzmq"
2528 blackframe_filter_deps="gpl"
2529 boxblur_filter_deps="gpl"
2530 bs2b_filter_deps="libbs2b"
2531 colormatrix_filter_deps="gpl"
2532 cropdetect_filter_deps="gpl"
2533 delogo_filter_deps="gpl"
2534 deshake_filter_select="pixelutils"
2535 drawtext_filter_deps="libfreetype"
2536 ebur128_filter_deps="gpl"
2537 flite_filter_deps="libflite"
2538 frei0r_filter_deps="frei0r dlopen"
2539 frei0r_filter_extralibs='$ldl'
2540 frei0r_src_filter_deps="frei0r dlopen"
2541 frei0r_src_filter_extralibs='$ldl'
2542 geq_filter_deps="gpl"
2543 histeq_filter_deps="gpl"
2544 hqdn3d_filter_deps="gpl"
2545 interlace_filter_deps="gpl"
2546 kerndeint_filter_deps="gpl"
2547 ladspa_filter_deps="ladspa dlopen"
2548 ladspa_filter_extralibs='$ldl'
2549 mcdeint_filter_deps="avcodec gpl"
2550 movie_filter_deps="avcodec avformat"
2551 mp_filter_deps="gpl avcodec swscale inline_asm"
2552 mpdecimate_filter_deps="gpl"
2553 mpdecimate_filter_select="pixelutils"
2554 mptestsrc_filter_deps="gpl"
2555 negate_filter_deps="lut_filter"
2556 perspective_filter_deps="gpl"
2557 ocv_filter_deps="libopencv"
2558 owdenoise_filter_deps="gpl"
2559 pan_filter_deps="swresample"
2560 phase_filter_deps="gpl"
2561 pp_filter_deps="gpl postproc"
2562 pullup_filter_deps="gpl"
2563 removelogo_filter_deps="avcodec avformat swscale"
2564 resample_filter_deps="avresample"
2565 sab_filter_deps="gpl swscale"
2566 scale_filter_deps="swscale"
2567 select_filter_select="pixelutils"
2568 smartblur_filter_deps="gpl swscale"
2569 showspectrum_filter_deps="avcodec"
2570 showspectrum_filter_select="rdft"
2571 spp_filter_deps="gpl avcodec"
2572 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2573 stereo3d_filter_deps="gpl"
2574 subtitles_filter_deps="avformat avcodec libass"
2575 super2xsai_filter_deps="gpl"
2576 tinterlace_filter_deps="gpl"
2577 vidstabdetect_filter_deps="libvidstab"
2578 vidstabtransform_filter_deps="libvidstab"
2579 pixfmts_super2xsai_test_deps="super2xsai_filter"
2580 tinterlace_merge_test_deps="tinterlace_filter"
2581 tinterlace_pad_test_deps="tinterlace_filter"
2582 zmq_filter_deps="libzmq"
2583 zoompan_filter_deps="swscale"
2584
2585 # examples
2586 avio_reading="avformat avcodec avutil"
2587 avcodec_example_deps="avcodec avutil"
2588 demuxing_decoding_example_deps="avcodec avformat avutil"
2589 filter_audio_example_deps="avfilter avutil"
2590 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2591 filtering_video_example_deps="avfilter avcodec avformat avutil"
2592 metadata_example_deps="avformat avutil"
2593 muxing_example_deps="avcodec avformat avutil swscale"
2594 remuxing_example_deps="avcodec avformat avutil"
2595 resampling_audio_example_deps="avutil swresample"
2596 scaling_video_example_deps="avutil swscale"
2597 transcode_aac_example_deps="avcodec avformat swresample"
2598 transcoding_example_deps="avfilter avcodec avformat avutil"
2599
2600 # libraries, in linking order
2601 avcodec_deps="avutil"
2602 avdevice_deps="avformat avcodec avutil"
2603 avfilter_deps="avutil"
2604 avformat_deps="avcodec avutil"
2605 avresample_deps="avutil"
2606 postproc_deps="avutil gpl"
2607 swresample_deps="avutil"
2608 swscale_deps="avutil"
2609
2610 # programs
2611 ffmpeg_deps="avcodec avfilter avformat swresample"
2612 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2613                null_filter
2614                setpts_filter trim_filter"
2615 ffplay_deps="avcodec avformat swscale swresample sdl"
2616 ffplay_libs='$sdl_libs'
2617 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2618 ffprobe_deps="avcodec avformat"
2619 ffserver_deps="avformat fork sarestart"
2620 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2621
2622 # documentation
2623 podpages_deps="perl"
2624 manpages_deps="perl pod2man"
2625 htmlpages_deps="perl texi2html"
2626 txtpages_deps="perl makeinfo"
2627 doc_deps_any="manpages htmlpages podpages txtpages"
2628
2629 # default parameters
2630
2631 logfile="config.log"
2632
2633 # installation paths
2634 prefix_default="/usr/local"
2635 bindir_default='${prefix}/bin'
2636 datadir_default='${prefix}/share/ffmpeg'
2637 docdir_default='${prefix}/share/doc/ffmpeg'
2638 incdir_default='${prefix}/include'
2639 libdir_default='${prefix}/lib'
2640 mandir_default='${prefix}/share/man'
2641 shlibdir_default="$libdir_default"
2642
2643 # toolchain
2644 ar_default="ar"
2645 cc_default="gcc"
2646 cxx_default="g++"
2647 host_cc_default="gcc"
2648 cp_f="cp -f"
2649 doxygen_default="doxygen"
2650 install="install"
2651 ln_s="ln -s -f"
2652 nm_default="nm -g"
2653 objformat="elf"
2654 pkg_config_default=pkg-config
2655 ranlib_default="ranlib"
2656 strip_default="strip"
2657 yasmexe_default="yasm"
2658 windres_default="windres"
2659
2660 # OS
2661 target_os_default=$(tolower $(uname -s))
2662 host_os=$target_os_default
2663
2664 # machine
2665 if test "$target_os_default" = aix; then
2666     arch_default=$(uname -p)
2667     strip_default="strip -X32_64"
2668 else
2669     arch_default=$(uname -m)
2670 fi
2671 cpu="generic"
2672 intrinsics="none"
2673
2674 # configurable options
2675 enable $PROGRAM_LIST
2676 enable $DOCUMENT_LIST
2677 enable $EXAMPLE_LIST
2678 enable $(filter_out avresample $LIBRARY_LIST)
2679 enable stripping
2680
2681 enable asm
2682 enable debug
2683 enable doc
2684 enable optimizations
2685 enable runtime_cpudetect
2686 enable safe_bitstream_reader
2687 enable static
2688 enable swscale_alpha
2689
2690 sws_max_filter_size_default=256
2691 set_default sws_max_filter_size
2692
2693 # Enable hwaccels by default.
2694 enable dxva2 vaapi vda vdpau xvmc
2695 enable xlib
2696
2697 # build settings
2698 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2699 LIBPREF="lib"
2700 LIBSUF=".a"
2701 FULLNAME='$(NAME)$(BUILDSUF)'
2702 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2703 SLIBPREF="lib"
2704 SLIBSUF=".so"
2705 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2706 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2707 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2708 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2709 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2710 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2711
2712 asflags_filter=echo
2713 cflags_filter=echo
2714 ldflags_filter=echo
2715
2716 AS_C='-c'
2717 AS_O='-o $@'
2718 CC_C='-c'
2719 CC_E='-E -o $@'
2720 CC_O='-o $@'
2721 CXX_C='-c'
2722 CXX_O='-o $@'
2723 LD_O='-o $@'
2724 LD_LIB='-l%'
2725 LD_PATH='-L'
2726 HOSTCC_C='-c'
2727 HOSTCC_E='-E -o $@'
2728 HOSTCC_O='-o $@'
2729 HOSTLD_O='-o $@'
2730
2731 host_libs='-lm'
2732 host_cflags_filter=echo
2733 host_ldflags_filter=echo
2734
2735 target_path='$(CURDIR)'
2736
2737 # since the object filename is not given with the -MM flag, the compiler
2738 # is only able to print the basename, and we must add the path ourselves
2739 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2740 DEPFLAGS='-MM'
2741
2742 # find source path
2743 if test -f configure; then
2744     source_path=.
2745 else
2746     source_path=$(cd $(dirname "$0"); pwd)
2747     echo "$source_path" | grep -q '[[:blank:]]' &&
2748         die "Out of tree builds are impossible with whitespace in source path."
2749     test -e "$source_path/config.h" &&
2750         die "Out of tree builds are impossible with config.h in source dir."
2751 fi
2752
2753 for v in "$@"; do
2754     r=${v#*=}
2755     l=${v%"$r"}
2756     r=$(sh_quote "$r")
2757     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2758 done
2759
2760 find_things(){
2761     thing=$1
2762     pattern=$2
2763     file=$source_path/$3
2764     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2765 }
2766
2767 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2768 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2769 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2770 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2771 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2772 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2773 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2774 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2775 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2776 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2777 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2778
2779 ALL_COMPONENTS="
2780     $BSF_LIST
2781     $DECODER_LIST
2782     $DEMUXER_LIST
2783     $ENCODER_LIST
2784     $FILTER_LIST
2785     $HWACCEL_LIST
2786     $INDEV_LIST
2787     $MUXER_LIST
2788     $OUTDEV_LIST
2789     $PARSER_LIST
2790     $PROTOCOL_LIST
2791 "
2792
2793 for n in $COMPONENT_LIST; do
2794     v=$(toupper ${n%s})_LIST
2795     eval enable \$$v
2796     eval ${n}_if_any="\$$v"
2797 done
2798
2799 enable $ARCH_EXT_LIST
2800
2801 die_unknown(){
2802     echo "Unknown option \"$1\"."
2803     echo "See $0 --help for available options."
2804     exit 1
2805 }
2806
2807 print_3_columns() {
2808     cat | tr ' ' '\n' | sort | pr -r -3 -t
2809 }
2810
2811 show_list() {
2812     suffix=_$1
2813     shift
2814     echo $* | sed s/$suffix//g | print_3_columns
2815     exit 0
2816 }
2817
2818 rand_list(){
2819     IFS=', '
2820     set -- $*
2821     unset IFS
2822     for thing; do
2823         comp=${thing%:*}
2824         prob=${thing#$comp}
2825         prob=${prob#:}
2826         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2827         echo "prob ${prob:-0.5}"
2828         printf '%s\n' $comp
2829     done
2830 }
2831
2832 do_random(){
2833     action=$1
2834     shift
2835     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2836     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2837 }
2838
2839 for opt do
2840     optval="${opt#*=}"
2841     case "$opt" in
2842         --extra-ldflags=*)
2843             add_ldflags $optval
2844         ;;
2845         --extra-ldexeflags=*)
2846             add_ldexeflags $optval
2847         ;;
2848         --extra-libs=*)
2849             add_extralibs $optval
2850         ;;
2851         --disable-devices)
2852             disable $INDEV_LIST $OUTDEV_LIST
2853         ;;
2854         --enable-debug=*)
2855             debuglevel="$optval"
2856         ;;
2857         --disable-programs)
2858             disable $PROGRAM_LIST
2859         ;;
2860         --disable-everything)
2861             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2862         ;;
2863         --disable-all)
2864             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2865             disable $LIBRARY_LIST $PROGRAM_LIST doc
2866         ;;
2867         --enable-random|--disable-random)
2868             action=${opt%%-random}
2869             do_random ${action#--} $COMPONENT_LIST
2870         ;;
2871         --enable-random=*|--disable-random=*)
2872             action=${opt%%-random=*}
2873             do_random ${action#--} $optval
2874         ;;
2875         --enable-*=*|--disable-*=*)
2876             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2877             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2878             eval list=\$$(toupper $thing)_LIST
2879             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2880             list=$(filter "$name" $list)
2881             [ "$list" = "" ] && warn "Option $opt did not match anything"
2882             $action $list
2883         ;;
2884         --enable-?*|--disable-?*)
2885             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2886             if is_in $option $COMPONENT_LIST; then
2887                 test $action = disable && action=unset
2888                 eval $action \$$(toupper ${option%s})_LIST
2889             elif is_in $option $CMDLINE_SELECT; then
2890                 $action $option
2891             else
2892                 die_unknown $opt
2893             fi
2894         ;;
2895         --list-*)
2896             NAME="${opt#--list-}"
2897             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2898             NAME=${NAME%s}
2899             eval show_list $NAME \$$(toupper $NAME)_LIST
2900         ;;
2901         --help|-h) show_help
2902         ;;
2903         --fatal-warnings) enable fatal_warnings
2904         ;;
2905         *)
2906             optname="${opt%%=*}"
2907             optname="${optname#--}"
2908             optname=$(echo "$optname" | sed 's/-/_/g')
2909             if is_in $optname $CMDLINE_SET; then
2910                 eval $optname='$optval'
2911             elif is_in $optname $CMDLINE_APPEND; then
2912                 append $optname "$optval"
2913             else
2914                 die_unknown $opt
2915             fi
2916         ;;
2917     esac
2918 done
2919
2920 disabled logging && logfile=/dev/null
2921
2922 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2923 set >> $logfile
2924
2925 test -n "$cross_prefix" && enable cross_compile
2926
2927 if enabled cross_compile; then
2928     test -n "$arch" && test -n "$target_os" ||
2929         die "Must specify target arch and OS when cross-compiling"
2930 fi
2931
2932 ar_default="${cross_prefix}${ar_default}"
2933 cc_default="${cross_prefix}${cc_default}"
2934 cxx_default="${cross_prefix}${cxx_default}"
2935 nm_default="${cross_prefix}${nm_default}"
2936 pkg_config_default="${cross_prefix}${pkg_config_default}"
2937 ranlib_default="${cross_prefix}${ranlib_default}"
2938 strip_default="${cross_prefix}${strip_default}"
2939 windres_default="${cross_prefix}${windres_default}"
2940
2941 sysinclude_default="${sysroot}/usr/include"
2942
2943 test -n "$valgrind" && toolchain="valgrind-memcheck"
2944
2945 case "$toolchain" in
2946     clang-asan)
2947         cc_default="clang"
2948         add_cflags  -fsanitize=address
2949         add_ldflags -fsanitize=address
2950     ;;
2951     clang-tsan)
2952         cc_default="clang"
2953         add_cflags  -fsanitize=thread -pie
2954         add_ldflags -fsanitize=thread -pie
2955     ;;
2956     clang-usan)
2957         cc_default="clang"
2958         add_cflags  -fsanitize=undefined
2959         add_ldflags -fsanitize=undefined
2960     ;;
2961     gcc-asan)
2962         cc_default="gcc"
2963         add_cflags  -fsanitize=address
2964         add_ldflags -fsanitize=address
2965     ;;
2966     gcc-tsan)
2967         cc_default="gcc"
2968         add_cflags  -fsanitize=thread -pie -fPIC
2969         add_ldflags -fsanitize=thread -pie -fPIC
2970     ;;
2971     gcc-usan)
2972         cc_default="gcc"
2973         add_cflags  -fsanitize=undefined
2974         add_ldflags -fsanitize=undefined
2975     ;;
2976     valgrind-massif)
2977         target_exec_default=${valgrind:-"valgrind"}
2978         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"
2979     ;;
2980     valgrind-memcheck)
2981         target_exec_default=${valgrind:-"valgrind"}
2982         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2983     ;;
2984     msvc)
2985         # Check whether the current MSVC version needs the C99 converter.
2986         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2987         # support enough of C99 to build ffmpeg. Default to the new
2988         # behaviour if the regexp was unable to match anything, since this
2989         # successfully parses the version number of existing supported
2990         # versions that require the converter (MSVC 2010 and 2012).
2991         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2992         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2993             cc_default="cl"
2994         else
2995             cc_default="c99wrap cl"
2996         fi
2997         ld_default="link"
2998         nm_default="dumpbin -symbols"
2999         ar_default="lib"
3000         target_os_default="win32"
3001         # Use a relative path for TMPDIR. This makes sure all the
3002         # ffconf temp files are written with a relative path, avoiding
3003         # issues with msys/win32 path conversion for MSVC parameters
3004         # such as -Fo<file> or -out:<file>.
3005         TMPDIR=.
3006     ;;
3007     icl)
3008         cc_default="icl"
3009         ld_default="xilink"
3010         nm_default="dumpbin -symbols"
3011         ar_default="xilib"
3012         target_os_default="win32"
3013         TMPDIR=.
3014     ;;
3015     gcov)
3016         add_cflags  -fprofile-arcs -ftest-coverage
3017         add_ldflags -fprofile-arcs -ftest-coverage
3018     ;;
3019     hardened)
3020         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
3021         add_ldflags -Wl,-z,relro -Wl,-z,now
3022     ;;
3023     ?*)
3024         die "Unknown toolchain $toolchain"
3025     ;;
3026 esac
3027
3028 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3029     target_exec target_os yasmexe
3030 enabled cross_compile || host_cc_default=$cc
3031 set_default host_cc
3032
3033 if ! $pkg_config --version >/dev/null 2>&1; then
3034     warn "$pkg_config not found, library detection may fail."
3035     pkg_config=false
3036 fi
3037
3038 if test $doxygen != $doxygen_default && \
3039   ! $doxygen --version >/dev/null 2>&1; then
3040     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3041 fi
3042
3043 exesuf() {
3044     case $1 in
3045         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3046     esac
3047 }
3048
3049 EXESUF=$(exesuf $target_os)
3050 HOSTEXESUF=$(exesuf $host_os)
3051
3052 # set temporary file name
3053 : ${TMPDIR:=$TEMPDIR}
3054 : ${TMPDIR:=$TMP}
3055 : ${TMPDIR:=/tmp}
3056
3057 if [ -n "$tempprefix" ] ; then
3058     mktemp(){
3059         echo $tempprefix.${HOSTNAME}.${UID}
3060     }
3061 elif ! check_cmd mktemp -u XXXXXX; then
3062     # simple replacement for missing mktemp
3063     # NOT SAFE FOR GENERAL USE
3064     mktemp(){
3065         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3066     }
3067 fi
3068
3069 tmpfile(){
3070     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3071         (set -C; exec > $tmp) 2>/dev/null ||
3072         die "Unable to create temporary file in $TMPDIR."
3073     append TMPFILES $tmp
3074     eval $1=$tmp
3075 }
3076
3077 trap 'rm -f -- $TMPFILES' EXIT
3078
3079 tmpfile TMPASM .asm
3080 tmpfile TMPC   .c
3081 tmpfile TMPCPP .cpp
3082 tmpfile TMPE   $EXESUF
3083 tmpfile TMPH   .h
3084 tmpfile TMPM   .m
3085 tmpfile TMPO   .o
3086 tmpfile TMPS   .S
3087 tmpfile TMPSH  .sh
3088 tmpfile TMPV   .ver
3089
3090 unset -f mktemp
3091
3092 chmod +x $TMPE
3093
3094 # make sure we can execute files in $TMPDIR
3095 cat > $TMPSH 2>> $logfile <<EOF
3096 #! /bin/sh
3097 EOF
3098 chmod +x $TMPSH >> $logfile 2>&1
3099 if ! $TMPSH >> $logfile 2>&1; then
3100     cat <<EOF
3101 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3102 variable to another directory and make sure that it is not mounted noexec.
3103 EOF
3104     die "Sanity test failed."
3105 fi
3106
3107 armasm_flags(){
3108     for flag; do
3109         case $flag in
3110             # Filter out MSVC cl.exe options from cflags that shouldn't
3111             # be passed to gas-preprocessor
3112             -M[TD]*)                                            ;;
3113             *)                  echo $flag                      ;;
3114         esac
3115    done
3116 }
3117
3118 ccc_flags(){
3119     for flag; do
3120         case $flag in
3121             -std=c99)           echo -c99                       ;;
3122             -mcpu=*)            echo -arch ${flag#*=}           ;;
3123             -mieee)             echo -ieee                      ;;
3124             -O*|-fast)          echo $flag                      ;;
3125             -fno-math-errno)    echo -assume nomath_errno       ;;
3126             -g)                 echo -g3                        ;;
3127             -Wall)              echo -msg_enable level2         ;;
3128             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3129             -Wl,*)              echo $flag                      ;;
3130             -f*|-W*)                                            ;;
3131             *)                  echo $flag                      ;;
3132         esac
3133    done
3134 }
3135
3136 cparser_flags(){
3137     for flag; do
3138         case $flag in
3139             -Wno-switch)             echo -Wno-switch-enum ;;
3140             -Wno-format-zero-length) ;;
3141             -Wdisabled-optimization) ;;
3142             -Wno-pointer-sign)       echo -Wno-other ;;
3143             *)                       echo $flag ;;
3144         esac
3145     done
3146 }
3147
3148 msvc_common_flags(){
3149     for flag; do
3150         case $flag in
3151             # In addition to specifying certain flags under the compiler
3152             # specific filters, they must be specified here as well or else the
3153             # generic catch all at the bottom will print the original flag.
3154             -Wall)                ;;
3155             -std=c99)             ;;
3156             # Common flags
3157             -fomit-frame-pointer) ;;
3158             -g)                   echo -Z7 ;;
3159             -fno-math-errno)      ;;
3160             -fno-common)          ;;
3161             -fno-signed-zeros)    ;;
3162             -fPIC)                ;;
3163             -mthumb)              ;;
3164             -march=*)             ;;
3165             -lz)                  echo zlib.lib ;;
3166             -lavifil32)           echo vfw32.lib ;;
3167             -lavicap32)           echo vfw32.lib user32.lib ;;
3168             -l*)                  echo ${flag#-l}.lib ;;
3169             *)                    echo $flag ;;
3170         esac
3171     done
3172 }
3173
3174 msvc_flags(){
3175     msvc_common_flags "$@"
3176     for flag; do
3177         case $flag in
3178             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3179                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3180                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3181                                        -wd4554 \
3182                                        -wd4273 ;;
3183         esac
3184     done
3185 }
3186
3187 icl_flags(){
3188     msvc_common_flags "$@"
3189     for flag; do
3190         case $flag in
3191             # Despite what Intel's documentation says -Wall, which is supported
3192             # on Windows, does enable remarks so disable them here.
3193             -Wall)                echo $flag -Qdiag-disable:remark ;;
3194             -std=c99)             echo -Qstd=c99 ;;
3195             -flto)                echo -ipo ;;
3196         esac
3197     done
3198 }
3199
3200 icc_flags(){
3201     for flag; do
3202         case $flag in
3203             -flto)                echo -ipo ;;
3204             *)                    echo $flag ;;
3205         esac
3206     done
3207 }
3208
3209 pgi_flags(){
3210     for flag; do
3211         case $flag in
3212             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3213             -fomit-frame-pointer) echo -Mnoframe ;;
3214             -g)                   echo -gopt ;;
3215             *)                    echo $flag ;;
3216         esac
3217     done
3218 }
3219
3220 suncc_flags(){
3221     for flag; do
3222         case $flag in
3223             -march=*|-mcpu=*)
3224                 case "${flag#*=}" in
3225                     native)                   echo -xtarget=native       ;;
3226                     v9|niagara)               echo -xarch=sparc          ;;
3227                     ultrasparc)               echo -xarch=sparcvis       ;;
3228                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3229                     i586|pentium)             echo -xchip=pentium        ;;
3230                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3231                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3232                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3233                     pentium4*)          echo -xtarget=pentium4           ;;
3234                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3235                     *-sse3)             echo -xarch=sse3                 ;;
3236                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3237                     bonnell)                   echo -xarch=ssse3         ;;
3238                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3239                     westmere)                  echo -xtarget=westmere    ;;
3240                     silvermont)                echo -xarch=sse4_2        ;;
3241                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3242                     core-avx*|ivybridge|haswell|broadwell)
3243                                                echo -xarch=avx           ;;
3244                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3245                     btver1)                    echo -xarch=amdsse4a      ;;
3246                     btver2|bdver*)             echo -xarch=avx           ;;
3247                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3248                     k8|opteron|athlon64|athlon-fx)
3249                                                echo -xarch=sse2a         ;;
3250                     athlon*)                   echo -xarch=pentium_proa  ;;
3251                 esac
3252                 ;;
3253             -std=c99)             echo -xc99              ;;
3254             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3255             -fPIC)                echo -KPIC -xcode=pic32 ;;
3256             -W*,*)                echo $flag              ;;
3257             -f*-*|-W*|-mimpure-text)                      ;;
3258             -shared)              echo -G                 ;;
3259             *)                    echo $flag              ;;
3260         esac
3261     done
3262 }
3263
3264 tms470_flags(){
3265     for flag; do
3266         case $flag in
3267             -march=*|-mcpu=*)
3268                 case "${flag#*=}" in
3269                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3270                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3271                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3272                     armv6*|arm11*)          echo -mv=6   ;;
3273                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3274                                             echo -mv=5e  ;;
3275                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3276                 esac
3277                 ;;
3278             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3279             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3280             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3281             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3282             -msoft-float)   echo --float_support=vfplib       ;;
3283             -O[0-3]|-mf=*)  echo $flag                        ;;
3284             -g)             echo -g -mn                       ;;
3285             -pds=*)         echo $flag                        ;;
3286             -D*|-I*)        echo $flag                        ;;
3287             --gcc|--abi=*)  echo $flag                        ;;
3288             -me)            echo $flag                        ;;
3289         esac
3290     done
3291 }
3292
3293 probe_cc(){
3294     pfx=$1
3295     _cc=$2
3296
3297     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3298     unset _ld_o _ldflags _ld_lib _ld_path
3299     unset _depflags _DEPCMD _DEPFLAGS
3300     _flags_filter=echo
3301
3302     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3303         true # no-op to avoid reading stdin in following checks
3304     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3305         _type=llvm_gcc
3306         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3307         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3308         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3309         _cflags_speed='-O3'
3310         _cflags_size='-Os'
3311     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3312         _type=gcc
3313         gcc_version=$($_cc --version | head -n1)
3314         gcc_basever=$($_cc -dumpversion)
3315         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3316         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3317         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3318         if ! $_cc -dumpversion | grep -q '^2\.'; then
3319             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3320         fi
3321         _cflags_speed='-O3'
3322         _cflags_size='-Os'
3323     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3324         _type=icc
3325         _ident=$($_cc --version | head -n1)
3326         _depflags='-MMD'
3327         _cflags_speed='-O3'
3328         _cflags_size='-Os'
3329         _cflags_noopt='-O1'
3330         _flags_filter=icc_flags
3331     elif $_cc -v 2>&1 | grep -q xlc; then
3332         _type=xlc
3333         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3334         _cflags_speed='-O5'
3335         _cflags_size='-O5 -qcompact'
3336     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3337         _type=ccc
3338         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3339         _DEPFLAGS='-M'
3340         _cflags_speed='-fast'
3341         _cflags_size='-O1'
3342         _flags_filter=ccc_flags
3343     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3344         test -d "$sysroot" || die "No valid sysroot specified."
3345         _type=armcc
3346         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3347         armcc_conf="$PWD/armcc.conf"
3348         $_cc --arm_linux_configure                 \
3349              --arm_linux_config_file="$armcc_conf" \
3350              --configure_sysroot="$sysroot"        \
3351              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3352              die "Error creating armcc configuration file."
3353         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3354         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3355         as_default="${cross_prefix}gcc"
3356         _depflags='-MMD'
3357         _cflags_speed='-O3'
3358         _cflags_size='-Os'
3359     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3360         _type=tms470
3361         _ident=$($_cc -version | head -n1 | tr -s ' ')
3362         _flags='--gcc --abi=eabi -me'
3363         _cc_e='-ppl -fe=$@'
3364         _cc_o='-fe=$@'
3365         _depflags='-ppa -ppd=$(@:.o=.d)'
3366         _cflags_speed='-O3 -mf=5'
3367         _cflags_size='-O3 -mf=2'
3368         _flags_filter=tms470_flags
3369     elif $_cc -v 2>&1 | grep -q clang; then
3370         _type=clang
3371         _ident=$($_cc --version | head -n1)
3372         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3373         _cflags_speed='-O3'
3374         _cflags_size='-Os'
3375     elif $_cc -V 2>&1 | grep -q Sun; then
3376         _type=suncc
3377         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3378         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3379         _DEPFLAGS='-xM1 -xc99'
3380         _ldflags='-std=c99'
3381         _cflags_speed='-O5'
3382         _cflags_size='-O5 -xspace'
3383         _flags_filter=suncc_flags
3384     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3385         _type=pathscale
3386         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3387         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3388         _cflags_speed='-O2'
3389         _cflags_size='-Os'
3390         _flags_filter='filter_out -Wdisabled-optimization'
3391     elif $_cc -v 2>&1 | grep -q Open64; then
3392         _type=open64
3393         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3394         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3395         _cflags_speed='-O2'
3396         _cflags_size='-Os'
3397         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3398     elif $_cc -V 2>&1 | grep -q Portland; then
3399         _type=pgi
3400         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3401         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3402         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3403         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3404         _cflags_noopt="-O"
3405         _flags_filter=pgi_flags
3406     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3407         _type=armasm
3408         _ident=$($_cc | head -n1)
3409         # 4509: "This form of conditional instruction is deprecated"
3410         _flags="-nologo -ignore 4509"
3411         _flags_filter=armasm_flags
3412     elif $_cc 2>&1 | grep -q Microsoft; then
3413         _type=msvc
3414         _ident=$($cc 2>&1 | head -n1)
3415         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3416         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3417         _cflags_speed="-O2"
3418         _cflags_size="-O1"
3419         if $_cc 2>&1 | grep -q Linker; then
3420             _ld_o='-out:$@'
3421         else
3422             _ld_o='-Fe$@'
3423         fi
3424         _cc_o='-Fo$@'
3425         _cc_e='-P -Fi$@'
3426         _flags_filter=msvc_flags
3427         _ld_lib='lib%.a'
3428         _ld_path='-libpath:'
3429         _flags='-nologo'
3430         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3431         if [ $pfx = hostcc ]; then
3432             append _cflags -Dsnprintf=_snprintf
3433         fi
3434         disable stripping
3435     elif $_cc 2>&1 | grep -q Intel; then
3436         _type=icl
3437         _ident=$($cc 2>&1 | head -n1)
3438         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3439         # Not only is O3 broken on 13.x+ but it is slower on all previous
3440         # versions (tested) as well.
3441         _cflags_speed="-O2"
3442         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3443         if $_cc 2>&1 | grep -q Linker; then
3444             _ld_o='-out:$@'
3445         else
3446             _ld_o='-Fe$@'
3447         fi
3448         _cc_o='-Fo$@'
3449         _cc_e='-P'
3450         _flags_filter=icl_flags
3451         _ld_lib='lib%.a'
3452         _ld_path='-libpath:'
3453         # -Qdiag-error to make icl error when seeing certain unknown arguments
3454         _flags='-nologo -Qdiag-error:4044,10157'
3455         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3456         # with MSVC which enables it by default.
3457         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3458         if [ $pfx = hostcc ]; then
3459             append _cflags -Dsnprintf=_snprintf
3460         fi
3461     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3462         _type=cparser
3463         _ident=$($_cc --version | head -n1)
3464         _depflags='-MMD'
3465         _cflags_speed='-O4'
3466         _cflags_size='-O2'
3467         _flags_filter=cparser_flags
3468     fi
3469
3470     eval ${pfx}_type=\$_type
3471     eval ${pfx}_ident=\$_ident
3472 }
3473
3474 set_ccvars(){
3475     eval ${1}_C=\${_cc_c-\${${1}_C}}
3476     eval ${1}_E=\${_cc_e-\${${1}_E}}
3477     eval ${1}_O=\${_cc_o-\${${1}_O}}
3478
3479     if [ -n "$_depflags" ]; then
3480         eval ${1}_DEPFLAGS=\$_depflags
3481     else
3482         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3483         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3484         eval DEP${1}FLAGS=\$_flags
3485     fi
3486 }
3487
3488 probe_cc cc "$cc"
3489 cflags_filter=$_flags_filter
3490 cflags_speed=$_cflags_speed
3491 cflags_size=$_cflags_size
3492 cflags_noopt=$_cflags_noopt
3493 add_cflags $_flags $_cflags
3494 cc_ldflags=$_ldflags
3495 set_ccvars CC
3496
3497 probe_cc hostcc "$host_cc"
3498 host_cflags_filter=$_flags_filter
3499 add_host_cflags  $_flags $_cflags
3500 set_ccvars HOSTCC
3501
3502 test -n "$cc_type" && enable $cc_type ||
3503     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3504
3505 : ${as_default:=$cc}
3506 : ${dep_cc_default:=$cc}
3507 : ${ld_default:=$cc}
3508 : ${host_ld_default:=$host_cc}
3509 set_default ar as dep_cc ld host_ld windres
3510
3511 probe_cc as "$as"
3512 asflags_filter=$_flags_filter
3513 add_asflags $_flags $_cflags
3514 set_ccvars AS
3515
3516 probe_cc ld "$ld"
3517 ldflags_filter=$_flags_filter
3518 add_ldflags $_flags $_ldflags
3519 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3520 LD_O=${_ld_o-$LD_O}
3521 LD_LIB=${_ld_lib-$LD_LIB}
3522 LD_PATH=${_ld_path-$LD_PATH}
3523
3524 probe_cc hostld "$host_ld"
3525 host_ldflags_filter=$_flags_filter
3526 add_host_ldflags $_flags $_ldflags
3527 HOSTLD_O=${_ld_o-$HOSTLD_O}
3528
3529 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3530     probe_cc depcc "$dep_cc"
3531     CCDEP=${_DEPCMD:-$DEPCMD}
3532     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3533     DEPCCFLAGS=$_flags
3534 fi
3535
3536 if $ar 2>&1 | grep -q Microsoft; then
3537     arflags="-nologo"
3538     ar_o='-out:$@'
3539 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3540     arflags="rq"
3541     ar_o='$@'
3542 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3543     arflags='-Xany -r -c'
3544     ar_o='$@'
3545 else
3546     arflags="rc"
3547     ar_o='$@'
3548 fi
3549
3550 add_cflags $extra_cflags
3551 add_cxxflags $extra_cxxflags
3552 add_asflags $extra_cflags
3553
3554 if test -n "$sysroot"; then
3555     case "$cc_type" in
3556         gcc|llvm_gcc|clang)
3557             add_cppflags --sysroot="$sysroot"
3558             add_ldflags --sysroot="$sysroot"
3559 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3560             add_cppflags -isysroot "$sysroot"
3561             add_ldflags -isysroot "$sysroot"
3562         ;;
3563         tms470)
3564             add_cppflags -I"$sysinclude"
3565             add_ldflags  --sysroot="$sysroot"
3566         ;;
3567     esac
3568 fi
3569
3570 if test "$cpu" = host; then
3571     enabled cross_compile &&
3572         die "--cpu=host makes no sense when cross-compiling."
3573
3574     case "$cc_type" in
3575         gcc|llvm_gcc)
3576             check_native(){
3577                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3578                 sed -n "/cc1.*$1=/{
3579                             s/.*$1=\\([^ ]*\\).*/\\1/
3580                             p
3581                             q
3582                         }" $TMPE
3583             }
3584             cpu=$(check_native -march || check_native -mcpu)
3585         ;;
3586     esac
3587
3588     test "${cpu:-host}" = host &&
3589         die "--cpu=host not supported with compiler $cc"
3590 fi
3591
3592 # Deal with common $arch aliases
3593 case "$arch" in
3594     aarch64|arm64)
3595         arch="aarch64"
3596     ;;
3597     arm*|iPad*|iPhone*)
3598         arch="arm"
3599     ;;
3600     mips*|IP*)
3601         arch="mips"
3602     ;;
3603     parisc*|hppa*)
3604         arch="parisc"
3605     ;;
3606     "Power Macintosh"|ppc*|powerpc*)
3607         arch="ppc"
3608     ;;
3609     s390|s390x)
3610         arch="s390"
3611     ;;
3612     sh4|sh)
3613         arch="sh4"
3614     ;;
3615     sun4u|sparc*)
3616         arch="sparc"
3617     ;;
3618     tilegx|tile-gx)
3619         arch="tilegx"
3620     ;;
3621     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3622         arch="x86"
3623     ;;
3624 esac
3625
3626 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3627 enable $arch
3628
3629 # Add processor-specific flags
3630 if enabled aarch64; then
3631
3632     case $cpu in
3633         armv*)
3634             cpuflags="-march=$cpu"
3635         ;;
3636         *)
3637             cpuflags="-mcpu=$cpu"
3638         ;;
3639     esac
3640
3641 elif enabled alpha; then
3642
3643     cpuflags="-mcpu=$cpu"
3644
3645 elif enabled arm; then
3646
3647     check_arm_arch() {
3648         check_cpp_condition stddef.h \
3649             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3650             $cpuflags
3651     }
3652
3653     probe_arm_arch() {
3654         if   check_arm_arch 4;        then echo armv4;
3655         elif check_arm_arch 4T;       then echo armv4t;
3656         elif check_arm_arch 5;        then echo armv5;
3657         elif check_arm_arch 5E;       then echo armv5e;
3658         elif check_arm_arch 5T;       then echo armv5t;
3659         elif check_arm_arch 5TE;      then echo armv5te;
3660         elif check_arm_arch 5TEJ;     then echo armv5te;
3661         elif check_arm_arch 6;        then echo armv6;
3662         elif check_arm_arch 6J;       then echo armv6j;
3663         elif check_arm_arch 6K;       then echo armv6k;
3664         elif check_arm_arch 6Z;       then echo armv6z;
3665         elif check_arm_arch 6ZK;      then echo armv6zk;
3666         elif check_arm_arch 6T2;      then echo armv6t2;
3667         elif check_arm_arch 7;        then echo armv7;
3668         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3669         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3670         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3671         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3672         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3673         fi
3674     }
3675
3676     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3677
3678     case $cpu in
3679         armv*)
3680             cpuflags="-march=$cpu"
3681             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3682         ;;
3683         *)
3684             cpuflags="-mcpu=$cpu"
3685             case $cpu in
3686                 cortex-a*)                               subarch=armv7a  ;;
3687                 cortex-r*)                               subarch=armv7r  ;;
3688                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3689                 arm11*)                                  subarch=armv6   ;;
3690                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3691                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3692                 *)                             subarch=$(probe_arm_arch) ;;
3693             esac
3694         ;;
3695     esac
3696
3697     case "$subarch" in
3698         armv5t*)    enable fast_clz                ;;
3699         armv[6-8]*)
3700             enable fast_clz
3701             disabled fast_unaligned || enable fast_unaligned
3702             ;;
3703     esac
3704
3705 elif enabled avr32; then
3706
3707     case $cpu in
3708         ap7[02]0[0-2])
3709             subarch="avr32_ap"
3710             cpuflags="-mpart=$cpu"
3711         ;;
3712         ap)
3713             subarch="avr32_ap"
3714             cpuflags="-march=$cpu"
3715         ;;
3716         uc3[ab]*)
3717             subarch="avr32_uc"
3718             cpuflags="-mcpu=$cpu"
3719         ;;
3720         uc)
3721             subarch="avr32_uc"
3722             cpuflags="-march=$cpu"
3723         ;;
3724     esac
3725
3726 elif enabled bfin; then
3727
3728     cpuflags="-mcpu=$cpu"
3729
3730 elif enabled mips; then
3731
3732     cpuflags="-march=$cpu"
3733
3734     case $cpu in
3735         24kc)
3736             disable mipsfpu
3737             disable mipsdspr1
3738             disable mipsdspr2
3739         ;;
3740         24kf*)
3741             disable mipsdspr1
3742             disable mipsdspr2
3743         ;;
3744         24kec|34kc|1004kc)
3745             disable mipsfpu
3746             disable mipsdspr2
3747         ;;
3748         24kef*|34kf*|1004kf*)
3749             disable mipsdspr2
3750         ;;
3751         74kc)
3752             disable mipsfpu
3753         ;;
3754     esac
3755
3756 elif enabled ppc; then
3757
3758     disable ldbrx
3759     disable vsx
3760
3761     case $(tolower $cpu) in
3762         601|ppc601|powerpc601)
3763             cpuflags="-mcpu=601"
3764             disable altivec
3765         ;;
3766         603*|ppc603*|powerpc603*)
3767             cpuflags="-mcpu=603"
3768             disable altivec
3769         ;;
3770         604*|ppc604*|powerpc604*)
3771             cpuflags="-mcpu=604"
3772             disable altivec
3773         ;;
3774         g3|75*|ppc75*|powerpc75*)
3775             cpuflags="-mcpu=750"
3776             disable altivec
3777         ;;
3778         g4|745*|ppc745*|powerpc745*)
3779             cpuflags="-mcpu=7450"
3780         ;;
3781         74*|ppc74*|powerpc74*)
3782             cpuflags="-mcpu=7400"
3783         ;;
3784         g5|970|ppc970|powerpc970)
3785             cpuflags="-mcpu=970"
3786         ;;
3787         power[3-8]*)
3788             cpuflags="-mcpu=$cpu"
3789         ;;
3790         cell)
3791             cpuflags="-mcpu=cell"
3792             enable ldbrx
3793         ;;
3794         e500mc)
3795             cpuflags="-mcpu=e500mc"
3796             disable altivec
3797         ;;
3798         e500v2)
3799             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3800             disable altivec
3801             disable dcbzl
3802         ;;
3803         e500)
3804             cpuflags="-mcpu=8540 -mhard-float"
3805             disable altivec
3806             disable dcbzl
3807         ;;
3808     esac
3809
3810 elif enabled sparc; then
3811
3812     case $cpu in
3813         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3814             cpuflags="-mcpu=$cpu"
3815         ;;
3816         ultrasparc*|niagara[234])
3817             cpuflags="-mcpu=$cpu"
3818         ;;
3819     esac
3820
3821 elif enabled x86; then
3822
3823     case $cpu in
3824         i[345]86|pentium)
3825             cpuflags="-march=$cpu"
3826             disable mmx
3827         ;;
3828         # targets that do NOT support nopl and conditional mov (cmov)
3829         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3830             cpuflags="-march=$cpu"
3831             disable i686
3832         ;;
3833         # targets that do support nopl and conditional mov (cmov)
3834         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3835         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3836             cpuflags="-march=$cpu"
3837             enable i686
3838             enable fast_cmov
3839         ;;
3840         # targets that do support conditional mov but on which it's slow
3841         pentium4|pentium4m|prescott|nocona)
3842             cpuflags="-march=$cpu"
3843             enable i686
3844             disable fast_cmov
3845         ;;
3846     esac
3847
3848 fi
3849
3850 if [ "$cpu" != generic ]; then
3851     add_cflags  $cpuflags
3852     add_asflags $cpuflags
3853 fi
3854
3855 # compiler sanity check
3856 check_exec <<EOF
3857 int main(void){ return 0; }
3858 EOF
3859 if test "$?" != 0; then
3860     echo "$cc is unable to create an executable file."
3861     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3862         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3863         echo "Only do this if you know what cross compiling means."
3864     fi
3865     die "C compiler test failed."
3866 fi
3867
3868 add_cppflags -D_ISOC99_SOURCE
3869 add_cxxflags -D__STDC_CONSTANT_MACROS
3870 check_cflags -std=c99
3871 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3872 #include <stdlib.h>
3873 EOF
3874 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3875 #include <stdlib.h>
3876 EOF
3877
3878 add_host_cppflags -D_ISOC99_SOURCE
3879 check_host_cflags -std=c99
3880 check_host_cflags -Wall
3881 check_host_cflags -O3
3882
3883 check_64bit(){
3884     arch32=$1
3885     arch64=$2
3886     expr=$3
3887     check_code cc "" "int test[2*($expr) - 1]" &&
3888         subarch=$arch64 || subarch=$arch32
3889 }
3890
3891 case "$arch" in
3892     aarch64|alpha|ia64)
3893         spic=$shared
3894     ;;
3895     mips)
3896         check_64bit mips mips64 '_MIPS_SIM > 1'
3897         spic=$shared
3898     ;;
3899     parisc)
3900         check_64bit parisc parisc64 'sizeof(void *) > 4'
3901         spic=$shared
3902     ;;
3903     ppc)
3904         check_64bit ppc ppc64 'sizeof(void *) > 4'
3905         spic=$shared
3906     ;;
3907     s390)
3908         check_64bit s390 s390x 'sizeof(void *) > 4'
3909         spic=$shared
3910     ;;
3911     sparc)
3912         check_64bit sparc sparc64 'sizeof(void *) > 4'
3913         spic=$shared
3914     ;;
3915     x86)
3916         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3917         if test "$subarch" = "x86_64"; then
3918             spic=$shared
3919         fi
3920     ;;
3921     ppc)
3922         check_cc <<EOF && subarch="ppc64"
3923         int test[(int)sizeof(char*) - 7];
3924 EOF
3925     ;;
3926 esac
3927
3928 enable $subarch
3929 enabled spic && enable_weak pic
3930
3931 # OS specific
3932 case $target_os in
3933     aix)
3934         SHFLAGS=-shared
3935         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3936         enabled shared && add_ldflags -Wl,-brtl
3937         ;;
3938     android)
3939         disable symver
3940         SLIB_INSTALL_NAME='$(SLIBNAME)'
3941         SLIB_INSTALL_LINKS=
3942         # soname not set on purpose
3943         SHFLAGS=-shared
3944         ;;
3945     haiku)
3946         prefix_default="/boot/common"
3947         network_extralibs="-lnetwork"
3948         host_libs=
3949         ;;
3950     sunos)
3951         SHFLAGS='-shared -Wl,-h,$$(@F)'
3952         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3953         network_extralibs="-lsocket -lnsl"
3954         # When using suncc to build, the Solaris linker will mark
3955         # an executable with each instruction set encountered by
3956         # the Solaris assembler.  As our libraries contain their own
3957         # guards for processor-specific code, instead suppress
3958         # generation of the HWCAPS ELF section on Solaris x86 only.
3959         enabled_all suncc x86 &&
3960             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3961             add_ldflags -Wl,-M,mapfile
3962         nm_default='nm -P -g'
3963         ;;
3964     netbsd)
3965         disable symver
3966         oss_indev_extralibs="-lossaudio"
3967         oss_outdev_extralibs="-lossaudio"
3968         enabled gcc || check_ldflags -Wl,-zmuldefs
3969         ;;
3970     openbsd|bitrig)
3971         disable symver
3972         SHFLAGS='-shared'
3973         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3974         SLIB_INSTALL_LINKS=
3975         oss_indev_extralibs="-lossaudio"
3976         oss_outdev_extralibs="-lossaudio"
3977         ;;
3978     dragonfly)
3979         disable symver
3980         ;;
3981     freebsd)
3982         ;;
3983     bsd/os)
3984         add_extralibs -lpoll -lgnugetopt
3985         strip="strip -d"
3986         ;;
3987     darwin)
3988         enabled ppc && add_asflags -force_cpusubtype_ALL
3989         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3990         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3991         strip="${strip} -x"
3992         add_ldflags -Wl,-dynamic,-search_paths_first
3993         SLIBSUF=".dylib"
3994         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3995         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3996         objformat="macho"
3997         enabled x86_64 && objformat="macho64"
3998         enabled_any pic shared ||
3999             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4000         ;;
4001     mingw32*)
4002         if test $target_os = "mingw32ce"; then
4003             disable network
4004         else
4005             target_os=mingw32
4006         fi
4007         LIBTARGET=i386
4008         if enabled x86_64; then
4009             LIBTARGET="i386:x86-64"
4010         elif enabled arm; then
4011             LIBTARGET=arm-wince
4012         fi
4013         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4014         check_ldflags -Wl,--nxcompat
4015         check_ldflags -Wl,--dynamicbase
4016         shlibdir_default="$bindir_default"
4017         SLIBPREF=""
4018         SLIBSUF=".dll"
4019         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4020         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4021         dlltool="${cross_prefix}dlltool"
4022         if check_cmd lib.exe -list; then
4023             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4024             if enabled x86_64; then
4025                 LIBTARGET=x64
4026             fi
4027         elif check_cmd $dlltool --version; then
4028             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4029         fi
4030         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4031         SLIB_INSTALL_LINKS=
4032         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4033         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4034         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4035         objformat="win32"
4036         ranlib=:
4037         enable dos_paths
4038         ;;
4039     win32|win64)
4040         disable symver
4041         if enabled shared; then
4042             # Link to the import library instead of the normal static library
4043             # for shared libs.
4044             LD_LIB='%.lib'
4045             # Cannot build both shared and static libs with MSVC or icl.
4046             disable static
4047         fi
4048         shlibdir_default="$bindir_default"
4049         SLIBPREF=""
4050         SLIBSUF=".dll"
4051         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4052         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4053         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4054         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4055         SLIB_INSTALL_LINKS=
4056         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4057         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4058         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4059         objformat="win32"
4060         ranlib=:
4061         enable dos_paths
4062         ;;
4063     cygwin*)
4064         target_os=cygwin
4065         shlibdir_default="$bindir_default"
4066         SLIBPREF="cyg"
4067         SLIBSUF=".dll"
4068         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4069         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4070         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4071         SLIB_INSTALL_LINKS=
4072         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4073         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4074         objformat="win32"
4075         enable dos_paths
4076         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4077         ;;
4078     *-dos|freedos|opendos)
4079         network_extralibs="-lsocket"
4080         objformat="coff"
4081         enable dos_paths
4082         add_cppflags -U__STRICT_ANSI__
4083         ;;
4084     linux)
4085         enable dv1394
4086         ;;
4087     irix*)
4088         target_os=irix
4089         ranlib="echo ignoring ranlib"
4090         ;;
4091     os/2*)
4092         strip="lxlite -CS"
4093         ln_s="cp -f"
4094         objformat="aout"
4095         add_cppflags -D_GNU_SOURCE
4096         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4097         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4098         LIBSUF="_s.a"
4099         SLIBPREF=""
4100         SLIBSUF=".dll"
4101         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4102         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4103         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4104             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4105             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4106             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4107             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4108             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4109         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4110             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4111         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4112         enable dos_paths
4113         enable_weak os2threads
4114         ;;
4115     gnu/kfreebsd)
4116         add_cppflags -D_BSD_SOURCE
4117         ;;
4118     gnu)
4119         ;;
4120     qnx)
4121         add_cppflags -D_QNX_SOURCE
4122         network_extralibs="-lsocket"
4123         ;;
4124     symbian)
4125         SLIBSUF=".dll"
4126         enable dos_paths
4127         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4128         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4129         add_ldflags -Wl,--target1-abs,--no-undefined \
4130                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4131                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4132         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4133                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4134                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4135         ;;
4136     osf1)
4137         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4138         ;;
4139     minix)
4140         ;;
4141     plan9)
4142         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4143                      -D_REENTRANT_SOURCE        \
4144                      -D_RESEARCH_SOURCE         \
4145                      -DFD_SETSIZE=96            \
4146                      -DHAVE_SOCK_OPTS
4147         add_compat strtod.o strtod=avpriv_strtod
4148         network_extralibs='-lbsd'
4149         exeobjs=compat/plan9/main.o
4150         disable ffserver
4151         cp_f='cp'
4152         ;;
4153     none)
4154         ;;
4155     *)
4156         die "Unknown OS '$target_os'."
4157         ;;
4158 esac
4159
4160 # determine libc flavour
4161
4162 probe_libc(){
4163     pfx=$1
4164     pfx_no_=${pfx%_}
4165     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4166     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4167         eval ${pfx}libc_type=uclibc
4168         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4169     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4170         eval ${pfx}libc_type=glibc
4171         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4172     # MinGW headers can be installed on Cygwin, so check for newlib first.
4173     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4174         eval ${pfx}libc_type=newlib
4175         add_${pfx}cppflags -U__STRICT_ANSI__
4176     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4177     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4178         eval ${pfx}libc_type=mingw64
4179         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4180             add_compat msvcrt/snprintf.o
4181             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4182         fi
4183         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4184         eval test \$${pfx_no_}cc_type = "gcc" &&
4185             add_${pfx}cppflags -D__printf__=__gnu_printf__
4186     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4187          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4188         eval ${pfx}libc_type=mingw32
4189         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4190             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4191             die "ERROR: MinGW32 runtime version must be >= 3.15."
4192         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4193         eval test \$${pfx_no_}cc_type = "gcc" &&
4194             add_${pfx}cppflags -D__printf__=__gnu_printf__
4195     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4196         eval ${pfx}libc_type=msvcrt
4197         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4198         # 0x601 by default unless something else is set by the user.
4199         # This can easily lead to us detecting functions only present
4200         # in such new versions and producing binaries requiring windows 7.0.
4201         # Therefore explicitly set the default to XP unless the user has
4202         # set something else on the command line.
4203         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4204             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4205     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4206         eval ${pfx}libc_type=klibc
4207     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4208         eval ${pfx}libc_type=bionic
4209     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4210         eval ${pfx}libc_type=solaris
4211         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4212     fi
4213 }
4214
4215 probe_libc
4216 test -n "$libc_type" && enable libc_$libc_type
4217 probe_libc host_
4218 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4219
4220 case $libc_type in
4221     bionic)
4222         add_compat strtod.o strtod=avpriv_strtod
4223         ;;
4224     msvcrt)
4225         add_compat strtod.o strtod=avpriv_strtod
4226         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4227                                      _snprintf=avpriv_snprintf  \
4228                                      vsnprintf=avpriv_vsnprintf
4229         ;;
4230 esac
4231
4232 # hacks for compiler/libc/os combinations
4233
4234 if enabled_all tms470 libc_glibc; then
4235     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4236     add_cppflags -D__USER_LABEL_PREFIX__=
4237     add_cppflags -D__builtin_memset=memset
4238     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4239     add_cflags   -pds=48    # incompatible redefinition of macro
4240 fi
4241
4242 if enabled_all ccc libc_glibc; then
4243     add_ldflags -Wl,-z,now  # calls to libots crash without this
4244 fi
4245
4246 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4247     add_cppflags '-I\$(SRC_PATH)/compat/float'
4248
4249 esc(){
4250     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4251 }
4252
4253 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4254
4255 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4256
4257 set_default $PATHS_LIST
4258 set_default nm
4259
4260 # we need to build at least one lib type
4261 if ! enabled_any static shared; then
4262     cat <<EOF
4263 At least one library type must be built.
4264 Specify --enable-static to build the static libraries or --enable-shared to
4265 build the shared libraries as well. To only build the shared libraries specify
4266 --disable-static in addition to --enable-shared.
4267 EOF
4268     exit 1;
4269 fi
4270
4271 die_license_disabled() {
4272     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4273 }
4274
4275 die_license_disabled_gpl() {
4276     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4277 }
4278
4279 die_license_disabled gpl frei0r
4280 die_license_disabled gpl libcdio
4281 die_license_disabled gpl libsmbclient
4282 die_license_disabled gpl libutvideo
4283 die_license_disabled gpl libvidstab
4284 die_license_disabled gpl libx264
4285 die_license_disabled gpl libx265
4286 die_license_disabled gpl libxavs
4287 die_license_disabled gpl libxvid
4288 die_license_disabled gpl libzvbi
4289 die_license_disabled gpl x11grab
4290
4291 die_license_disabled nonfree libaacplus
4292 die_license_disabled nonfree libfaac
4293 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4294 enabled gpl && die_license_disabled_gpl nonfree openssl
4295
4296 die_license_disabled version3 libopencore_amrnb
4297 die_license_disabled version3 libopencore_amrwb
4298 die_license_disabled version3 libsmbclient
4299 die_license_disabled version3 libvo_aacenc
4300 die_license_disabled version3 libvo_amrwbenc
4301
4302 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4303
4304 disabled optimizations || check_cflags -fomit-frame-pointer
4305
4306 enable_weak_pic() {
4307     disabled pic && return
4308     enable pic
4309     add_cppflags -DPIC
4310     case "$target_os" in
4311     mingw*|cygwin*)
4312         ;;
4313     *)
4314         add_cflags -fPIC
4315         ;;
4316     esac
4317     add_asflags  -fPIC
4318 }
4319
4320 enabled pic && enable_weak_pic
4321
4322 check_cc <<EOF || die "Symbol mangling check failed."
4323 int ff_extern;
4324 EOF
4325 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4326 extern_prefix=${sym%%ff_extern*}
4327
4328 check_cc <<EOF && enable_weak inline_asm
4329 void foo(void) { __asm__ volatile ("" ::); }
4330 EOF
4331
4332 _restrict=
4333 for restrict_keyword in restrict __restrict__ __restrict; do
4334     check_cc <<EOF && _restrict=$restrict_keyword && break
4335 void foo(char * $restrict_keyword p);
4336 EOF
4337 done
4338
4339 check_cc <<EOF && enable pragma_deprecated
4340 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4341 EOF
4342
4343 check_cc <<EOF && enable attribute_packed
4344 struct { int x; } __attribute__((packed)) x;
4345 EOF
4346
4347 check_cc <<EOF && enable attribute_may_alias
4348 union { int x; } __attribute__((may_alias)) x;
4349 EOF
4350
4351 check_cc <<EOF || die "endian test failed"
4352 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4353 EOF
4354 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4355
4356 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4357     if ! enabled bigendian ;then
4358         enable vsx
4359     fi
4360 fi
4361
4362 check_gas() {
4363     log "check_gas using '$as' as AS"
4364     # :vararg is used on aarch64, arm and ppc altivec
4365     check_as <<EOF || return 1
4366 .macro m n, y:vararg=0
4367 \n: .int \y
4368 .endm
4369 m x
4370 EOF
4371     # .altmacro is only used in arm asm
4372     ! enabled arm || check_as <<EOF || return 1
4373 .altmacro
4374 EOF
4375     enable gnu_as
4376     return 0
4377 }
4378
4379 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4380     nogas=:
4381     enabled_any arm aarch64 && nogas=die
4382     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4383     as_noop=-v
4384
4385     case $as_type in
4386         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4387         gcc)  gaspp_as_type=gas ;;
4388         *)    gaspp_as_type=$as_type ;;
4389     esac
4390
4391     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4392
4393     test "${as#*gas-preprocessor.pl}" != "$as" ||
4394     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4395         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4396
4397     if ! check_gas ; then
4398         as=${gas:=$as}
4399         check_gas || \
4400             $nogas "GNU assembler not found, install/update gas-preprocessor"
4401     fi
4402
4403     check_as <<EOF && enable as_func
4404 .func test
4405 .endfunc
4406 EOF
4407 fi
4408
4409 check_inline_asm inline_asm_labels '"1:\n"'
4410
4411 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4412
4413 if enabled aarch64; then
4414     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4415     # internal assembler in clang 3.3 does not support this instruction
4416     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4417     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4418
4419     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4420
4421 elif enabled alpha; then
4422
4423     check_cflags -mieee
4424
4425 elif enabled arm; then
4426
4427     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4428 float func(float a, float b){ return a+b; }
4429 EOF
4430
4431     enabled thumb && check_cflags -mthumb || check_cflags -marm
4432
4433     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4434         enable vfp_args
4435     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4436         case "${cross_prefix:-$cc}" in
4437             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4438             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4439 __asm__ (".eabi_attribute 28, 1");
4440 int main(void) { return 0; }
4441 EOF
4442         esac
4443         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4444     fi
4445
4446     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4447     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4448     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4449     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4450     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4451     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4452     enabled setend  && check_insn setend  'setend be'
4453
4454     [ $target_os = linux ] || [ $target_os = android ] ||
4455         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4456             $ARCH_EXT_LIST_ARM
4457
4458     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4459
4460     check_as <<EOF && enable as_dn_directive
4461 ra .dn d0.i16
4462 .unreq ra
4463 EOF
4464
4465     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4466
4467 elif enabled mips; then
4468
4469     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4470     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4471      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4472     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4473      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4474     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4475      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4476     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4477      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4478
4479 elif enabled parisc; then
4480
4481     if enabled gcc; then
4482         case $($cc -dumpversion) in
4483             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4484         esac
4485     fi
4486
4487 elif enabled ppc; then
4488
4489     enable local_aligned_8 local_aligned_16 local_aligned_32
4490
4491     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4492     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4493     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4494     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4495
4496     # AltiVec flags: The FSF version of GCC differs from the Apple version
4497     if enabled altivec; then
4498         check_cflags -maltivec -mabi=altivec &&
4499         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4500         check_cflags -faltivec
4501
4502         # check if our compiler supports Motorola AltiVec C API
4503         check_cc <<EOF || disable altivec
4504 $inc_altivec_h
4505 int main(void) {
4506     vector signed int v1 = (vector signed int) { 0 };
4507     vector signed int v2 = (vector signed int) { 1 };
4508     v1 = vec_add(v1, v2);
4509     return 0;
4510 }
4511 EOF
4512
4513         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4514     fi
4515
4516     if enabled vsx; then
4517         check_cflags -mvsx
4518     fi
4519 elif enabled x86; then
4520
4521     check_builtin rdtsc    intrin.h   "__rdtsc()"
4522     check_builtin mm_empty mmintrin.h "_mm_empty()"
4523
4524     enable local_aligned_8 local_aligned_16 local_aligned_32
4525
4526     # check whether EBP is available on x86
4527     # As 'i' is stored on the stack, this program will crash
4528     # if the base pointer is used to access it because the
4529     # base pointer is cleared in the inline assembly code.
4530     check_exec_crash <<EOF && enable ebp_available
4531 volatile int i=0;
4532 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4533 return i;
4534 EOF
4535
4536     # check whether EBX is available on x86
4537     check_inline_asm ebx_available '""::"b"(0)' &&
4538         check_inline_asm ebx_available '"":::"%ebx"'
4539
4540     # check whether xmm clobbers are supported
4541     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4542
4543     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4544         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4545
4546     # check whether binutils is new enough to compile SSSE3/MMXEXT
4547     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4548     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4549
4550     if ! disabled_any asm mmx yasm; then
4551         if check_cmd $yasmexe --version; then
4552             enabled x86_64 && yasm_extra="-m amd64"
4553             yasm_debug="-g dwarf2"
4554         elif check_cmd nasm -v; then
4555             yasmexe=nasm
4556             yasm_debug="-g -F dwarf"
4557             if enabled x86_64; then
4558                 case "$objformat" in
4559                     elf)   objformat=elf64 ;;
4560                     win32) objformat=win64 ;;
4561                 esac
4562             fi
4563         fi
4564
4565         YASMFLAGS="-f $objformat $yasm_extra"
4566         enabled pic               && append YASMFLAGS "-DPIC"
4567         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4568         case "$objformat" in
4569             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4570         esac
4571
4572         check_yasm "movbe ecx, [5]" && enable yasm ||
4573             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4574         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4575         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4576         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4577         check_yasm "CPU amdnop" || disable cpunop
4578     fi
4579
4580     case "$cpu" in
4581         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4582             disable fast_clz
4583         ;;
4584     esac
4585
4586 fi
4587
4588 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4589
4590 check_ldflags -Wl,--as-needed
4591
4592 if check_func dlopen; then
4593     ldl=
4594 elif check_func dlopen -ldl; then
4595     ldl=-ldl
4596 fi
4597
4598 if ! disabled network; then
4599     check_func getaddrinfo $network_extralibs
4600     check_func getservbyport $network_extralibs
4601     check_func inet_aton $network_extralibs
4602
4603     check_type netdb.h "struct addrinfo"
4604     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4605     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4606     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4607     check_type poll.h "struct pollfd"
4608     check_type netinet/sctp.h "struct sctp_event_subscribe"
4609     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4610     check_type netinet/in.h "struct sockaddr_in6"
4611     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4612     check_type "sys/types.h sys/socket.h" socklen_t
4613
4614     # Prefer arpa/inet.h over winsock2
4615     if check_header arpa/inet.h ; then
4616         check_func closesocket
4617     elif check_header winsock2.h ; then
4618         check_func_headers winsock2.h closesocket -lws2 &&
4619             network_extralibs="-lws2" ||
4620         { check_func_headers winsock2.h closesocket -lws2_32 &&
4621             network_extralibs="-lws2_32"; } || disable winsock2_h network
4622         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4623
4624         check_type ws2tcpip.h socklen_t
4625         check_type ws2tcpip.h "struct addrinfo"
4626         check_type ws2tcpip.h "struct group_source_req"
4627         check_type ws2tcpip.h "struct ip_mreq_source"
4628         check_type ws2tcpip.h "struct ipv6_mreq"
4629         check_type winsock2.h "struct pollfd"
4630         check_struct winsock2.h "struct sockaddr" sa_len
4631         check_type ws2tcpip.h "struct sockaddr_in6"
4632         check_type ws2tcpip.h "struct sockaddr_storage"
4633     else
4634         disable network
4635     fi
4636 fi
4637
4638 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4639 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4640 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4641 check_builtin sarestart signal.h "SA_RESTART"
4642 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4643
4644 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4645 check_func  ${malloc_prefix}memalign            && enable memalign
4646 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4647
4648 check_func  access
4649 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4650 check_func  fcntl
4651 check_func  fork
4652 check_func  gethrtime
4653 check_func  getopt
4654 check_func  getrusage
4655 check_func  gettimeofday
4656 check_func  isatty
4657 check_func  localtime_r
4658 check_func  mach_absolute_time
4659 check_func  mkstemp
4660 check_func  mmap
4661 check_func  mprotect
4662 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4663 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4664 check_func  sched_getaffinity
4665 check_func  setrlimit
4666 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4667 check_func  strerror_r
4668 check_func  sysconf
4669 check_func  sysctl
4670 check_func  usleep
4671
4672 check_func_headers conio.h kbhit
4673 check_func_headers io.h setmode
4674 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4675 check_func_headers stdlib.h getenv
4676
4677 check_func_headers windows.h CoTaskMemFree -lole32
4678 check_func_headers windows.h GetProcessAffinityMask
4679 check_func_headers windows.h GetProcessTimes
4680 check_func_headers windows.h GetSystemTimeAsFileTime
4681 check_func_headers windows.h MapViewOfFile
4682 check_func_headers windows.h PeekNamedPipe
4683 check_func_headers windows.h SetConsoleTextAttribute
4684 check_func_headers windows.h Sleep
4685 check_func_headers windows.h VirtualAlloc
4686 check_func_headers glob.h glob
4687 enabled xlib &&
4688     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4689
4690 check_header cl/cl.h
4691 check_header direct.h
4692 check_header dlfcn.h
4693 check_header dxva.h
4694 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4695 check_header io.h
4696 check_header libcrystalhd/libcrystalhd_if.h
4697 check_header mach/mach_time.h
4698 check_header malloc.h
4699 check_header poll.h
4700 check_header sys/mman.h
4701 check_header sys/param.h
4702 check_header sys/resource.h
4703 check_header sys/select.h
4704 check_header sys/time.h
4705 check_header sys/un.h
4706 check_header termios.h
4707 check_header unistd.h
4708 check_header vdpau/vdpau.h
4709 check_header vdpau/vdpau_x11.h
4710 check_header VideoDecodeAcceleration/VDADecoder.h
4711 check_header windows.h
4712 check_header X11/extensions/XvMClib.h
4713 check_header asm/types.h
4714
4715 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4716 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4717 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4718
4719 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4720
4721 if ! disabled w32threads && ! enabled pthreads; then
4722     check_func_headers "windows.h process.h" _beginthreadex &&
4723         enable w32threads || disable w32threads
4724 fi
4725
4726 # check for some common methods of building with pthread support
4727 # do this before the optional library checks as some of them require pthreads
4728 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4729     enable pthreads
4730     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4731         add_cflags -pthread
4732         add_extralibs -pthread
4733     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4734         add_cflags -pthreads
4735         add_extralibs -pthreads
4736     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4737         add_cflags -ldl -pthread
4738         add_extralibs -ldl -pthread
4739     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4740         add_extralibs -lpthreadGC2
4741     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4742         :
4743     elif ! check_func pthread_join && ! check_func pthread_create; then
4744         disable pthreads
4745     fi
4746     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4747 fi
4748
4749
4750 if enabled pthreads; then
4751   check_func pthread_cancel
4752 fi
4753
4754 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4755 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4756
4757 check_lib math.h sin -lm && LIBM="-lm"
4758 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4759
4760 atan2f_args=2
4761 ldexpf_args=2
4762 powf_args=2
4763 fminf_args=2
4764
4765 for func in $MATH_FUNCS; do
4766     eval check_mathfunc $func \${${func}_args:-1}
4767 done
4768
4769 # these are off by default, so fail if requested and not available
4770 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4771 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4772                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4773                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4774 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4775 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4776 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4777 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4778 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4779 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4780 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4781 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4782 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4783 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4784                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4785                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4786 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4787 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4788 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4789 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"
4790 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4791 enabled fontconfig        && enable libfontconfig
4792 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4793 enabled libfreetype       && require_libfreetype
4794 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4795 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4796 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4797                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4798                                done || die "ERROR: libgsm not found"; }
4799 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4800 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4801 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4802 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4803 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4804 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4805 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4806 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4807                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4808                                die "ERROR: libopenjpeg not found"; }
4809 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4810 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
4811 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4812 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4813 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4814 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4815 enabled libsmbclient      && { { check_pkg_config smbclient libsmbclient.h smbc_init &&
4816                                  require_pkg_config smbclient libsmbclient.h smbc_init; } ||
4817                                  require smbclient libsmbclient.h smbc_init -lsmbclient; }
4818 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4819 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4820 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4821 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4822     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4823     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4824 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4825 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4826                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4827                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4828 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4829 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4830 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4831 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4832 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4833 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4834 enabled libvpx            && {
4835     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4836                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4837     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 ||
4838                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4839     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4840     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_SVC" -lvpx || disable libvpx_vp9_encoder; } }
4841 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4842 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion &&
4843                              { check_code cc webp/encode.h "WebPPicture wp; wp.use_argb++" ||
4844                                die "ERROR: libwebp too old."; }
4845 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4846                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4847                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4848 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4849                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4850                                die "ERROR: libx265 version must be >= 17."; }
4851 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4852 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4853 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4854 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4855 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4856                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4857                                die "ERROR: openal not found"; } &&
4858                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4859                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4860 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4861                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4862                                die "ERROR: opencl not found"; } &&
4863                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4864                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4865                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4866 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4867                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4868                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4869                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4870                                die "ERROR: opengl not found."
4871                              }
4872 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4873                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4874                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4875                                die "ERROR: openssl not found"; }
4876 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4877
4878 if enabled gnutls; then
4879     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4880     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4881 fi
4882
4883 # libdc1394 check
4884 if enabled libdc1394; then
4885     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4886         enable libdc1394_2; } ||
4887     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4888         enable libdc1394_1; } ||
4889     die "ERROR: No version of libdc1394 found "
4890 fi
4891
4892 SDL_CONFIG="${cross_prefix}sdl-config"
4893 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4894     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4895     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4896     enable sdl
4897 else
4898   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4899     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4900     sdl_libs=$("${SDL_CONFIG}" --libs)
4901     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4902     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4903     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4904     enable sdl
4905   fi
4906 fi
4907 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4908
4909 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4910 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4911 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4912 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4913 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4914
4915 check_header linux/fb.h
4916 check_header linux/videodev.h
4917 check_header linux/videodev2.h
4918 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4919
4920 check_header sys/videoio.h
4921
4922 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4923 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4924 # w32api 3.12 had it defined wrong
4925 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4926
4927 check_type "dshow.h" IBaseFilter
4928
4929 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4930 { check_header dev/bktr/ioctl_meteor.h &&
4931   check_header dev/bktr/ioctl_bt848.h; } ||
4932 { check_header machine/ioctl_meteor.h &&
4933   check_header machine/ioctl_bt848.h; } ||
4934 { check_header dev/video/meteor/ioctl_meteor.h &&
4935   check_header dev/video/bktr/ioctl_bt848.h; } ||
4936 check_header dev/ic/bt8xx.h
4937
4938 check_header sndio.h
4939 if check_struct sys/soundcard.h audio_buf_info bytes; then
4940     enable_safe sys/soundcard.h
4941 else
4942     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4943     #include <sys/soundcard.h>
4944     audio_buf_info abc;
4945 EOF
4946 fi
4947 check_header soundcard.h
4948
4949 enabled_any alsa_indev alsa_outdev &&
4950     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4951
4952 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4953     check_func jack_port_get_latency_range -ljack
4954
4955 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4956
4957 if enabled libcdio; then
4958     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4959     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4960     die "ERROR: libcdio-paranoia not found"
4961 fi
4962
4963 enabled xlib &&
4964     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4965
4966 enabled x11grab                                           &&
4967 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4968 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4969 { enabled xlib || die "ERROR: Xlib not found"; }
4970
4971 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4972
4973 enabled dxva2api_h &&
4974     check_cc <<EOF && enable dxva2api_cobj
4975 #define _WIN32_WINNT 0x0600
4976 #define COBJMACROS
4977 #include <windows.h>
4978 #include <d3d9.h>
4979 #include <dxva2api.h>
4980 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
4981 EOF
4982
4983 enabled vaapi &&
4984     check_lib va/va.h vaInitialize -lva ||
4985     disable vaapi
4986
4987 enabled vdpau &&
4988     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4989     disable vdpau
4990
4991 enabled vdpau && enabled xlib &&
4992     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4993     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4994     enable vdpau_x11
4995
4996 # Funny iconv installations are not unusual, so check it after all flags have been set
4997 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4998
4999 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5000
5001 # add some useful compiler flags if supported
5002 check_cflags -Wdeclaration-after-statement
5003 check_cflags -Wall
5004 check_cflags -Wdisabled-optimization
5005 check_cflags -Wpointer-arith
5006 check_cflags -Wredundant-decls
5007 check_cflags -Wwrite-strings
5008 check_cflags -Wtype-limits
5009 check_cflags -Wundef
5010 check_cflags -Wmissing-prototypes
5011 check_cflags -Wno-pointer-to-int-cast
5012 check_cflags -Wstrict-prototypes
5013 check_cflags -Wempty-body
5014 enabled extra_warnings && check_cflags -Winline
5015
5016 check_disable_warning(){
5017     warning_flag=-W${1#-Wno-}
5018     test_cflags $warning_flag && add_cflags $1
5019 }
5020
5021 check_disable_warning -Wno-parentheses
5022 check_disable_warning -Wno-switch
5023 check_disable_warning -Wno-format-zero-length
5024 check_disable_warning -Wno-pointer-sign
5025
5026 # add some linker flags
5027 check_ldflags -Wl,--warn-common
5028 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5029 enabled rpath && add_ldflags -Wl,-rpath,$libdir
5030 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5031
5032 # add some strip flags
5033 # -wN '..@*' is more selective than -x, but not available everywhere.
5034 check_stripflags -wN \'..@*\' || check_stripflags -x
5035
5036 enabled neon_clobber_test &&
5037     check_ldflags -Wl,--wrap,avcodec_open2              \
5038                   -Wl,--wrap,avcodec_decode_audio4      \
5039                   -Wl,--wrap,avcodec_decode_video2      \
5040                   -Wl,--wrap,avcodec_decode_subtitle2   \
5041                   -Wl,--wrap,avcodec_encode_audio2      \
5042                   -Wl,--wrap,avcodec_encode_video2      \
5043                   -Wl,--wrap,avcodec_encode_subtitle    \
5044                   -Wl,--wrap,swr_convert                \
5045                   -Wl,--wrap,avresample_convert ||
5046     disable neon_clobber_test
5047
5048 enabled xmm_clobber_test &&
5049     check_ldflags -Wl,--wrap,avcodec_open2              \
5050                   -Wl,--wrap,avcodec_decode_audio4      \
5051                   -Wl,--wrap,avcodec_decode_video2      \
5052                   -Wl,--wrap,avcodec_decode_subtitle2   \
5053                   -Wl,--wrap,avcodec_encode_audio2      \
5054                   -Wl,--wrap,avcodec_encode_video       \
5055                   -Wl,--wrap,avcodec_encode_video2      \
5056                   -Wl,--wrap,avcodec_encode_subtitle    \
5057                   -Wl,--wrap,swr_convert                \
5058                   -Wl,--wrap,avresample_convert         \
5059                   -Wl,--wrap,sws_scale ||
5060     disable xmm_clobber_test
5061
5062 echo "X{};" > $TMPV
5063 if test_ldflags -Wl,--version-script,$TMPV; then
5064     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5065     check_cc <<EOF && enable symver_asm_label
5066 void ff_foo(void) __asm__ ("av_foo@VERSION");
5067 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5068 EOF
5069     check_cc <<EOF && enable symver_gnu_asm
5070 __asm__(".symver ff_foo,av_foo@VERSION");
5071 void ff_foo(void) {}
5072 EOF
5073 fi
5074
5075 if [ -z "$optflags" ]; then
5076     if enabled small; then
5077         optflags=$cflags_size
5078     elif enabled optimizations; then
5079         optflags=$cflags_speed
5080     else
5081         optflags=$cflags_noopt
5082     fi
5083 fi
5084
5085 check_optflags(){
5086     check_cflags "$@"
5087     enabled lto && check_ldflags "$@"
5088 }
5089
5090
5091 if enabled lto; then
5092     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5093     check_cflags  -flto
5094     check_ldflags -flto $cpuflags
5095     disable inline_asm_direct_symbol_refs
5096 fi
5097
5098 check_optflags $optflags
5099 check_optflags -fno-math-errno
5100 check_optflags -fno-signed-zeros
5101
5102 enabled ftrapv && check_cflags -ftrapv
5103
5104 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5105 int x;
5106 EOF
5107
5108
5109 if enabled icc; then
5110     # Just warnings, no remarks
5111     check_cflags -w1
5112     # -wd: Disable following warnings
5113     # 144, 167, 556: -Wno-pointer-sign
5114     # 188: enumerated type mixed with another type
5115     # 1292: attribute "foo" ignored
5116     # 1419: external declaration in primary source file
5117     # 10006: ignoring unknown option -fno-signed-zeros
5118     # 10148: ignoring unknown option -Wno-parentheses
5119     # 10156: ignoring option '-W'; no argument required
5120     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5121     # 11030: Warning unknown option --as-needed
5122     # 10156: ignoring option '-export'; no argument required
5123     check_ldflags -wd10156,11030
5124     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5125     enable ebp_available
5126     # The test above does not test linking
5127     enabled lto && disable symver_asm_label
5128     if enabled x86_32; then
5129         icc_version=$($cc -dumpversion)
5130         test ${icc_version%%.*} -ge 11 &&
5131             check_cflags -falign-stack=maintain-16-byte ||
5132             disable aligned_stack
5133     fi
5134 elif enabled ccc; then
5135     # disable some annoying warnings
5136     add_cflags -msg_disable bitnotint
5137     add_cflags -msg_disable mixfuncvoid
5138     add_cflags -msg_disable nonstandcast
5139     add_cflags -msg_disable unsupieee
5140 elif enabled gcc; then
5141     check_optflags -fno-tree-vectorize
5142     check_cflags -Werror=format-security
5143     check_cflags -Werror=implicit-function-declaration
5144     check_cflags -Werror=missing-prototypes
5145     check_cflags -Werror=return-type
5146     check_cflags -Werror=vla
5147     check_cflags -Wformat
5148     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5149 elif enabled llvm_gcc; then
5150     check_cflags -mllvm -stack-alignment=16
5151 elif enabled clang; then
5152     check_cflags -mllvm -stack-alignment=16
5153     check_cflags -Qunused-arguments
5154     check_cflags -Werror=implicit-function-declaration
5155     check_cflags -Werror=missing-prototypes
5156     check_cflags -Werror=return-type
5157 elif enabled cparser; then
5158     add_cflags -Wno-missing-variable-declarations
5159     add_cflags -Wno-empty-statement
5160 elif enabled armcc; then
5161     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5162     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5163     # 2523: use of inline assembly is deprecated
5164     add_cflags -W${armcc_opt},--diag_suppress=2523
5165     add_cflags -W${armcc_opt},--diag_suppress=1207
5166     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5167     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5168     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5169     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5170 elif enabled tms470; then
5171     add_cflags -pds=824 -pds=837
5172     disable inline_asm
5173 elif enabled pathscale; then
5174     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5175 elif enabled_any msvc icl; then
5176     enabled x86_32 && disable aligned_stack
5177     enabled_all x86_32 debug && add_cflags -Oy-
5178     enabled debug && add_ldflags -debug
5179     enable pragma_deprecated
5180     if enabled icl; then
5181         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5182         # (correctly) on icl 13.x.
5183         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5184             add_cflags -Qansi-alias
5185         # Some inline asm is not compilable in debug
5186         if enabled debug; then
5187             disable ebp_available
5188             disable ebx_available
5189         fi
5190     fi
5191     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5192     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5193 fi
5194
5195 case $as_type in
5196     clang)
5197         add_asflags -Qunused-arguments
5198     ;;
5199 esac
5200
5201 case $ld_type in
5202     clang)
5203         check_ldflags -Qunused-arguments
5204     ;;
5205 esac
5206
5207 case $target_os in
5208     osf1)
5209         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5210     ;;
5211     plan9)
5212         add_cppflags -Dmain=plan9_main
5213     ;;
5214 esac
5215
5216 enable frame_thread_encoder
5217
5218 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5219
5220 check_deps $CONFIG_LIST       \
5221            $CONFIG_EXTRA      \
5222            $HAVE_LIST         \
5223            $ALL_COMPONENTS    \
5224
5225 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"
5226
5227
5228 if test $target_os = "haiku"; then
5229     disable memalign
5230     disable posix_memalign
5231 fi
5232
5233 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5234     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5235     enable dxva2_lib
5236
5237 ! enabled_any memalign posix_memalign aligned_malloc &&
5238     enabled simd_align_16 && enable memalign_hack
5239
5240 # add_dep lib dep
5241 # -> enable ${lib}_deps_${dep}
5242 # -> add $dep to ${lib}_deps only once
5243 add_dep() {
5244     lib=$1
5245     dep=$2
5246     enabled "${lib}_deps_${dep}" && return 0
5247     enable  "${lib}_deps_${dep}"
5248     prepend "${lib}_deps" $dep
5249 }
5250
5251 # merge deps lib components
5252 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5253 merge_deps() {
5254     lib=$1
5255     shift
5256     for comp in $*; do
5257         enabled $comp || continue
5258         eval "dep=\"\$${comp}_deps\""
5259         for d in $dep; do
5260             add_dep $lib $d
5261         done
5262     done
5263 }
5264
5265 merge_deps libavfilter $FILTER_LIST
5266
5267 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5268
5269 for thread in $THREADS_LIST; do
5270     if enabled $thread; then
5271         test -n "$thread_type" &&
5272             die "ERROR: Only one thread type must be selected." ||
5273             thread_type="$thread"
5274     fi
5275 done
5276
5277 enabled zlib && add_cppflags -DZLIB_CONST
5278
5279 # conditional library dependencies, in linking order
5280 enabled aconvert_filter     && prepend avfilter_deps "swresample"
5281 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5282 enabled aresample_filter    && prepend avfilter_deps "swresample"
5283 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5284 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5285 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5286 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5287 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5288 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5289 enabled mp_filter           && prepend avfilter_deps "avcodec"
5290 enabled pan_filter          && prepend avfilter_deps "swresample"
5291 enabled pp_filter           && prepend avfilter_deps "postproc"
5292 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5293 enabled resample_filter && prepend avfilter_deps "avresample"
5294 enabled sab_filter          && prepend avfilter_deps "swscale"
5295 enabled scale_filter    && prepend avfilter_deps "swscale"
5296 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5297 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5298 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5299
5300 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5301
5302 enabled opus_decoder    && prepend avcodec_deps "swresample"
5303
5304 expand_deps(){
5305     lib_deps=${1}_deps
5306     eval "deps=\$$lib_deps"
5307     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5308     unique $lib_deps
5309 }
5310
5311 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5312 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5313
5314 map 'expand_deps $v' $LIBRARY_LIST
5315
5316 echo "install prefix            $prefix"
5317 echo "source path               $source_path"
5318 echo "C compiler                $cc"
5319 echo "C library                 $libc_type"
5320 if test "$host_cc" != "$cc"; then
5321     echo "host C compiler           $host_cc"
5322     echo "host C library            $host_libc_type"
5323 fi
5324 echo "ARCH                      $arch ($cpu)"
5325 if test "$build_suffix" != ""; then
5326     echo "build suffix              $build_suffix"
5327 fi
5328 if test "$progs_suffix" != ""; then
5329     echo "progs suffix              $progs_suffix"
5330 fi
5331 if test "$extra_version" != ""; then
5332     echo "version string suffix     $extra_version"
5333 fi
5334 echo "big-endian                ${bigendian-no}"
5335 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5336 if enabled x86; then
5337     echo "${yasmexe}                      ${yasm-no}"
5338     echo "MMX enabled               ${mmx-no}"
5339     echo "MMXEXT enabled            ${mmxext-no}"
5340     echo "3DNow! enabled            ${amd3dnow-no}"
5341     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5342     echo "SSE enabled               ${sse-no}"
5343     echo "SSSE3 enabled             ${ssse3-no}"
5344     echo "AVX enabled               ${avx-no}"
5345     echo "XOP enabled               ${xop-no}"
5346     echo "FMA3 enabled              ${fma3-no}"
5347     echo "FMA4 enabled              ${fma4-no}"
5348     echo "i686 features enabled     ${i686-no}"
5349     echo "CMOV is fast              ${fast_cmov-no}"
5350     echo "EBX available             ${ebx_available-no}"
5351     echo "EBP available             ${ebp_available-no}"
5352 fi
5353 if enabled aarch64; then
5354     echo "NEON enabled              ${neon-no}"
5355     echo "VFP enabled               ${vfp-no}"
5356 fi
5357 if enabled arm; then
5358     echo "ARMv5TE enabled           ${armv5te-no}"
5359     echo "ARMv6 enabled             ${armv6-no}"
5360     echo "ARMv6T2 enabled           ${armv6t2-no}"
5361     echo "VFP enabled               ${vfp-no}"
5362     echo "NEON enabled              ${neon-no}"
5363     echo "THUMB enabled             ${thumb-no}"
5364 fi
5365 if enabled mips; then
5366     echo "MIPS FPU enabled          ${mipsfpu-no}"
5367     echo "MIPS32R2 enabled          ${mips32r2-no}"
5368     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5369     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5370 fi
5371 if enabled ppc; then
5372     echo "AltiVec enabled           ${altivec-no}"
5373     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5374     echo "PPC VSX optimizations     ${vsx-no}"
5375     echo "dcbzl available           ${dcbzl-no}"
5376 fi
5377 echo "debug symbols             ${debug-no}"
5378 echo "strip symbols             ${stripping-no}"
5379 echo "optimize for size         ${small-no}"
5380 echo "optimizations             ${optimizations-no}"
5381 echo "static                    ${static-no}"
5382 echo "shared                    ${shared-no}"
5383 echo "postprocessing support    ${postproc-no}"
5384 echo "new filter support        ${avfilter-no}"
5385 echo "network support           ${network-no}"
5386 echo "threading support         ${thread_type-no}"
5387 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5388 echo "SDL support               ${sdl-no}"
5389 echo "opencl enabled            ${opencl-no}"
5390 echo "texi2html enabled         ${texi2html-no}"
5391 echo "perl enabled              ${perl-no}"
5392 echo "pod2man enabled           ${pod2man-no}"
5393 echo "makeinfo enabled          ${makeinfo-no}"
5394 test -n "$random_seed" &&
5395     echo "random seed               ${random_seed}"
5396 echo
5397
5398 echo "External libraries:"
5399 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5400 echo
5401
5402 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5403     echo "Enabled ${type}s:"
5404     eval list=\$$(toupper $type)_LIST
5405     print_enabled '_*' $list | print_3_columns
5406     echo
5407 done
5408
5409 license="LGPL version 2.1 or later"
5410 if enabled nonfree; then
5411     license="nonfree and unredistributable"
5412 elif enabled gplv3; then
5413     license="GPL version 3 or later"
5414 elif enabled lgplv3; then
5415     license="LGPL version 3 or later"
5416 elif enabled gpl; then
5417     license="GPL version 2 or later"
5418 fi
5419
5420 echo "License: $license"
5421
5422 echo "Creating config.mak, config.h, and doc/config.texi..."
5423
5424 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5425
5426 enabled stripping || strip="echo skipping strip"
5427
5428 config_files="$TMPH config.mak doc/config.texi"
5429
5430 cat > config.mak <<EOF
5431 # Automatically generated by configure - do not modify!
5432 ifndef FFMPEG_CONFIG_MAK
5433 FFMPEG_CONFIG_MAK=1
5434 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5435 prefix=$prefix
5436 LIBDIR=\$(DESTDIR)$libdir
5437 SHLIBDIR=\$(DESTDIR)$shlibdir
5438 INCDIR=\$(DESTDIR)$incdir
5439 BINDIR=\$(DESTDIR)$bindir
5440 DATADIR=\$(DESTDIR)$datadir
5441 DOCDIR=\$(DESTDIR)$docdir
5442 MANDIR=\$(DESTDIR)$mandir
5443 SRC_PATH=$source_path
5444 ifndef MAIN_MAKEFILE
5445 SRC_PATH:=\$(SRC_PATH:.%=..%)
5446 endif
5447 CC_IDENT=$cc_ident
5448 ARCH=$arch
5449 INTRINSICS=$intrinsics
5450 CC=$cc
5451 CXX=$cxx
5452 AS=$as
5453 LD=$ld
5454 DEPCC=$dep_cc
5455 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5456 DEPAS=$as
5457 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5458 YASM=$yasmexe
5459 DEPYASM=$yasmexe
5460 AR=$ar
5461 ARFLAGS=$arflags
5462 AR_O=$ar_o
5463 RANLIB=$ranlib
5464 STRIP=$strip
5465 CP=cp -p
5466 LN_S=$ln_s
5467 CPPFLAGS=$CPPFLAGS
5468 CFLAGS=$CFLAGS
5469 CXXFLAGS=$CXXFLAGS
5470 ASFLAGS=$ASFLAGS
5471 AS_C=$AS_C
5472 AS_O=$AS_O
5473 CC_C=$CC_C
5474 CC_E=$CC_E
5475 CC_O=$CC_O
5476 CXX_C=$CXX_C
5477 CXX_O=$CXX_O
5478 LD_O=$LD_O
5479 LD_LIB=$LD_LIB
5480 LD_PATH=$LD_PATH
5481 DLLTOOL=$dlltool
5482 WINDRES=$windres
5483 DEPWINDRES=$dep_cc
5484 DOXYGEN=$doxygen
5485 LDFLAGS=$LDFLAGS
5486 LDEXEFLAGS=$LDEXEFLAGS
5487 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5488 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5489 YASMFLAGS=$YASMFLAGS
5490 BUILDSUF=$build_suffix
5491 PROGSSUF=$progs_suffix
5492 FULLNAME=$FULLNAME
5493 LIBPREF=$LIBPREF
5494 LIBSUF=$LIBSUF
5495 LIBNAME=$LIBNAME
5496 SLIBPREF=$SLIBPREF
5497 SLIBSUF=$SLIBSUF
5498 EXESUF=$EXESUF
5499 EXTRA_VERSION=$extra_version
5500 CCDEP=$CCDEP
5501 CXXDEP=$CXXDEP
5502 CCDEP_FLAGS=$CCDEP_FLAGS
5503 ASDEP=$ASDEP
5504 ASDEP_FLAGS=$ASDEP_FLAGS
5505 CC_DEPFLAGS=$CC_DEPFLAGS
5506 AS_DEPFLAGS=$AS_DEPFLAGS
5507 HOSTCC=$host_cc
5508 HOSTLD=$host_ld
5509 HOSTCFLAGS=$host_cflags
5510 HOSTCPPFLAGS=$host_cppflags
5511 HOSTEXESUF=$HOSTEXESUF
5512 HOSTLDFLAGS=$host_ldflags
5513 HOSTLIBS=$host_libs
5514 DEPHOSTCC=$host_cc
5515 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5516 HOSTCCDEP=$HOSTCCDEP
5517 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5518 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5519 HOSTCC_C=$HOSTCC_C
5520 HOSTCC_O=$HOSTCC_O
5521 HOSTLD_O=$HOSTLD_O
5522 TARGET_EXEC=$target_exec $target_exec_args
5523 TARGET_PATH=$target_path
5524 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5525 CFLAGS-ffplay=$sdl_cflags
5526 ZLIB=$($ldflags_filter -lz)
5527 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5528 EXTRALIBS=$extralibs
5529 COMPAT_OBJS=$compat_objs
5530 EXEOBJS=$exeobjs
5531 INSTALL=$install
5532 LIBTARGET=${LIBTARGET}
5533 SLIBNAME=${SLIBNAME}
5534 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5535 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5536 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5537 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5538 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5539 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5540 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5541 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5542 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5543 NOREDZONE_FLAGS=$noredzone_flags
5544 EOF
5545
5546 get_version(){
5547     lcname=lib${1}
5548     name=$(toupper $lcname)
5549     file=$source_path/$lcname/version.h
5550     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5551     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5552     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5553     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5554     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5555     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5556 }
5557
5558 map 'get_version $v' $LIBRARY_LIST
5559
5560 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5561
5562 print_program_libs(){
5563     eval "program_libs=\$${1}_libs"
5564     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5565 }
5566
5567 map 'print_program_libs $v' $PROGRAM_LIST
5568
5569 cat > $TMPH <<EOF
5570 /* Automatically generated by configure - do not modify! */
5571 #ifndef FFMPEG_CONFIG_H
5572 #define FFMPEG_CONFIG_H
5573 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5574 #define FFMPEG_LICENSE "$(c_escape $license)"
5575 #define CONFIG_THIS_YEAR 2014
5576 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5577 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5578 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5579 #define av_restrict $_restrict
5580 #define EXTERN_PREFIX "${extern_prefix}"
5581 #define EXTERN_ASM ${extern_prefix}
5582 #define BUILDSUF "$build_suffix"
5583 #define SLIBSUF "$SLIBSUF"
5584 #define HAVE_MMX2 HAVE_MMXEXT
5585 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5586 EOF
5587
5588 test -n "$assert_level" &&
5589     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5590
5591 test -n "$malloc_prefix" &&
5592     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5593
5594 if enabled yasm; then
5595     append config_files $TMPASM
5596     printf '' >$TMPASM
5597 fi
5598
5599 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5600
5601
5602 mkdir -p doc
5603 echo "@c auto-generated by configure" > doc/config.texi
5604
5605 print_config ARCH_   "$config_files" $ARCH_LIST
5606 print_config HAVE_   "$config_files" $HAVE_LIST
5607 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5608                                      $CONFIG_EXTRA      \
5609                                      $ALL_COMPONENTS    \
5610
5611 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5612 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5613
5614 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5615 cp_if_changed $TMPH config.h
5616 touch .config
5617
5618 enabled yasm && cp_if_changed $TMPASM config.asm
5619
5620 cat > $TMPH <<EOF
5621 /* Generated by ffconf */
5622 #ifndef AVUTIL_AVCONFIG_H
5623 #define AVUTIL_AVCONFIG_H
5624 EOF
5625
5626 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5627
5628 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5629
5630 cp_if_changed $TMPH libavutil/avconfig.h
5631
5632 if test -n "$WARNINGS"; then
5633     printf "\n$WARNINGS"
5634     enabled fatal_warnings && exit 1
5635 fi
5636
5637 # build pkg-config files
5638
5639 lib_version(){
5640     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5641 }
5642
5643 pkgconfig_generate(){
5644     name=$1
5645     shortname=${name#lib}${build_suffix}
5646     comment=$2
5647     version=$3
5648     libs=$4
5649     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5650     requires=${requires%, }
5651     enabled ${name#lib} || return 0
5652     mkdir -p $name
5653     cat <<EOF > $name/$name${build_suffix}.pc
5654 prefix=$prefix
5655 exec_prefix=\${prefix}
5656 libdir=$libdir
5657 includedir=$incdir
5658
5659 Name: $name
5660 Description: $comment
5661 Version: $version
5662 Requires: $(enabled shared || echo $requires)
5663 Requires.private: $(enabled shared && echo $requires)
5664 Conflicts:
5665 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5666 Libs.private: $(enabled shared && echo $libs)
5667 Cflags: -I\${includedir}
5668 EOF
5669
5670 mkdir -p doc/examples/pc-uninstalled
5671 includedir=${source_path}
5672 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5673     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5674 prefix=
5675 exec_prefix=
5676 libdir=\${pcfiledir}/../../../$name
5677 includedir=${includedir}
5678
5679 Name: $name
5680 Description: $comment
5681 Version: $version
5682 Requires: $requires
5683 Conflicts:
5684 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5685 Cflags: -I\${includedir}
5686 EOF
5687 }
5688
5689 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5690 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5691 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5692 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5693 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5694 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5695 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
5696 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5697 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"