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   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89
  90 Licensing options:
  91   --enable-gpl             allow use of GPL code, the resulting libs
  92                            and binaries will be under GPL [no]
  93   --enable-version3        upgrade (L)GPL to version 3 [no]
  94   --enable-nonfree         allow use of nonfree code, the resulting libs
  95                            and binaries will be unredistributable [no]
  96
  97 Configuration options:
  98   --disable-static         do not build static libraries [no]
  99   --enable-shared          build shared libraries [no]
 100   --enable-small           optimize for size instead of speed
 101   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 102   --enable-gray            enable full grayscale support (slower color)
 103   --disable-swscale-alpha  disable alpha channel support in swscale
 104
 105 Program options:
 106   --disable-programs       do not build command line programs
 107   --disable-ffmpeg         disable ffmpeg build
 108   --disable-ffplay         disable ffplay build
 109   --disable-ffprobe        disable ffprobe build
 110   --disable-ffserver       disable ffserver build
 111
 112 Documentation options:
 113   --disable-doc            do not build documentation
 114   --disable-htmlpages      do not build HTML documentation pages
 115   --disable-manpages       do not build man documentation pages
 116   --disable-podpages       do not build POD documentation pages
 117   --disable-txtpages       do not build text documentation pages
 118
 119 Component options:
 120   --disable-avdevice       disable libavdevice build
 121   --disable-avcodec        disable libavcodec build
 122   --disable-avformat       disable libavformat build
 123   --disable-avutil         disable libavutil build
 124   --disable-swresample     disable libswresample build
 125   --disable-swscale        disable libswscale build
 126   --disable-postproc       disable libpostproc build
 127   --disable-avfilter       disable libavfilter build
 128   --enable-avresample      enable libavresample build [no]
 129   --disable-pthreads       disable pthreads [auto]
 130   --disable-w32threads     disable Win32 threads [auto]
 131   --disable-os2threads     disable OS/2 threads [auto]
 132   --enable-x11grab         enable X11 grabbing [no]
 133   --disable-network        disable network support [no]
 134   --disable-dct            disable DCT code
 135   --disable-dwt            disable DWT code
 136   --disable-lsp            disable LSP code
 137   --disable-lzo            disable LZO decoder code
 138   --disable-mdct           disable MDCT code
 139   --disable-rdft           disable RDFT code
 140   --disable-fft            disable FFT code
 141   --enable-dxva2           enable DXVA2 code
 142   --enable-vaapi           enable VAAPI code [autodetect]
 143   --enable-vda             enable VDA code   [autodetect]
 144   --enable-vdpau           enable VDPAU code [autodetect]
 145
 146 Individual component options:
 147   --disable-everything     disable all components listed below
 148   --disable-encoder=NAME   disable encoder NAME
 149   --enable-encoder=NAME    enable encoder NAME
 150   --disable-encoders       disable all encoders
 151   --disable-decoder=NAME   disable decoder NAME
 152   --enable-decoder=NAME    enable decoder NAME
 153   --disable-decoders       disable all decoders
 154   --disable-hwaccel=NAME   disable hwaccel NAME
 155   --enable-hwaccel=NAME    enable hwaccel NAME
 156   --disable-hwaccels       disable all hwaccels
 157   --disable-muxer=NAME     disable muxer NAME
 158   --enable-muxer=NAME      enable muxer NAME
 159   --disable-muxers         disable all muxers
 160   --disable-demuxer=NAME   disable demuxer NAME
 161   --enable-demuxer=NAME    enable demuxer NAME
 162   --disable-demuxers       disable all demuxers
 163   --enable-parser=NAME     enable parser NAME
 164   --disable-parser=NAME    disable parser NAME
 165   --disable-parsers        disable all parsers
 166   --enable-bsf=NAME        enable bitstream filter NAME
 167   --disable-bsf=NAME       disable bitstream filter NAME
 168   --disable-bsfs           disable all bitstream filters
 169   --enable-protocol=NAME   enable protocol NAME
 170   --disable-protocol=NAME  disable protocol NAME
 171   --disable-protocols      disable all protocols
 172   --enable-indev=NAME      enable input device NAME
 173   --disable-indev=NAME     disable input device NAME
 174   --disable-indevs         disable input devices
 175   --enable-outdev=NAME     enable output device NAME
 176   --disable-outdev=NAME    disable output device NAME
 177   --disable-outdevs        disable output devices
 178   --disable-devices        disable all devices
 179   --enable-filter=NAME     enable filter NAME
 180   --disable-filter=NAME    disable filter NAME
 181   --disable-filters        disable all filters
 182
 183 External library support:
 184   --enable-avisynth        enable reading of AVISynth script files [no]
 185   --enable-bzlib           enable bzlib [autodetect]
 186   --enable-fontconfig      enable fontconfig
 187   --enable-frei0r          enable frei0r video filtering
 188   --enable-gnutls          enable gnutls [no]
 189   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 190   --enable-libass          enable libass subtitles rendering [no]
 191   --enable-libbluray       enable BluRay reading using libbluray [no]
 192   --enable-libcaca         enable textual display using libcaca
 193   --enable-libcelt         enable CELT decoding via libcelt [no]
 194   --enable-libcdio         enable audio CD grabbing with libcdio
 195   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 196                            and libraw1394 [no]
 197   --enable-libfaac         enable AAC encoding via libfaac [no]
 198   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 199   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 200   --enable-libfreetype     enable libfreetype [no]
 201   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 202   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 203   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 204   --enable-libmodplug      enable ModPlug via libmodplug [no]
 205   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 206   --enable-libnut          enable NUT (de)muxing via libnut,
 207                            native (de)muxer exists [no]
 208   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 209   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 210   --enable-libopencv       enable video filtering via libopencv [no]
 211   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 212   --enable-libopus         enable Opus decoding via libopus [no]
 213   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 214   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 215   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 216   --enable-libsoxr         enable Include libsoxr resampling [no]
 217   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 218   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 219   --enable-libtheora       enable Theora encoding via libtheora [no]
 220   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 221   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 222   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 223   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 224   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 225   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 226                            native implementation exists [no]
 227   --enable-libvpx          enable VP8 de/encoding via libvpx [no]
 228   --enable-libx264         enable H.264 encoding via x264 [no]
 229   --enable-libxavs         enable AVS encoding via xavs [no]
 230   --enable-libxvid         enable Xvid encoding via xvidcore,
 231                            native MPEG-4/Xvid encoder exists [no]
 232   --enable-openal          enable OpenAL 1.1 capture support [no]
 233   --enable-openssl         enable openssl [no]
 234   --enable-zlib            enable zlib [autodetect]
 235
 236 Advanced options (experts only):
 237   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 238   --enable-cross-compile   assume a cross-compiler is used
 239   --sysroot=PATH           root of cross-build tree
 240   --sysinclude=PATH        location of cross-build system headers
 241   --target-os=OS           compiler targets OS [$target_os]
 242   --target-exec=CMD        command to run executables on target
 243   --target-path=DIR        path to view of build directory on target
 244   --toolchain=NAME         set tool defaults according to NAME
 245   --nm=NM                  use nm tool NM [$nm_default]
 246   --ar=AR                  use archive tool AR [$ar_default]
 247   --as=AS                  use assembler AS [$as_default]
 248   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 249   --cc=CC                  use C compiler CC [$cc_default]
 250   --cxx=CXX                use C compiler CXX [$cxx_default]
 251   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 252   --ld=LD                  use linker LD [$ld_default]
 253   --host-cc=HOSTCC         use host C compiler HOSTCC
 254   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 255   --host-ld=HOSTLD         use host linker HOSTLD
 256   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 257   --host-libs=HLIBS        use libs HLIBS when linking for host
 258   --host-os=OS             compiler host OS [$target_os]
 259   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 260   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 261   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 262   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 263   --extra-version=STRING   version string suffix []
 264   --optflags=OPTFLAGS      override optimization-related compiler flags
 265   --build-suffix=SUFFIX    library name suffix []
 266   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 267   --progs-suffix=SUFFIX    program name suffix []
 268   --arch=ARCH              select architecture [$arch]
 269   --cpu=CPU                select the minimum required CPU (affects
 270                            instruction selection, may crash on older CPUs)
 271   --enable-pic             build position-independent code
 272   --enable-sram            allow use of on-chip SRAM
 273   --enable-thumb           compile for Thumb instruction set
 274   --disable-symver         disable symbol versioning
 275   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 276   --disable-safe-bitstream-reader
 277                            disable buffer boundary checking in bitreaders
 278                            (faster, but may crash)
 279   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 280   --enable-lto             use link-time optimization
 281
 282 Optimization options (experts only):
 283   --disable-asm            disable all assembler optimizations
 284   --disable-altivec        disable AltiVec optimizations
 285   --disable-amd3dnow       disable 3DNow! optimizations
 286   --disable-amd3dnowext    disable 3DNow! extended optimizations
 287   --disable-mmx            disable MMX optimizations
 288   --disable-mmxext         disable MMXEXT optimizations
 289   --disable-sse            disable SSE optimizations
 290   --disable-sse2           disable SSE2 optimizations
 291   --disable-sse3           disable SSE3 optimizations
 292   --disable-ssse3          disable SSSE3 optimizations
 293   --disable-sse4           disable SSE4 optimizations
 294   --disable-sse42          disable SSE4.2 optimizations
 295   --disable-avx            disable AVX optimizations
 296   --disable-fma4           disable FMA4 optimizations
 297   --disable-armv5te        disable armv5te optimizations
 298   --disable-armv6          disable armv6 optimizations
 299   --disable-armv6t2        disable armv6t2 optimizations
 300   --disable-vfp            disable VFP optimizations
 301   --disable-neon           disable NEON optimizations
 302   --disable-vis            disable VIS optimizations
 303   --disable-inline-asm     disable use of inline assembler
 304   --disable-yasm           disable use of yasm assembler
 305   --disable-mips32r2       disable MIPS32R2 optimizations
 306   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 307   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 308   --disable-mipsfpu        disable floating point MIPS optimizations
 309   --disable-fast-unaligned consider unaligned accesses slow
 310   --postproc-version=V     build libpostproc version V.
 311                            Where V can be '$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO' or 'current'. [$postproc_version_default]
 312
 313 Developer options (useful when working on FFmpeg itself):
 314   --enable-coverage        build with test coverage instrumentation
 315   --disable-debug          disable debugging symbols
 316   --enable-debug=LEVEL     set the debug level [$debuglevel]
 317   --disable-optimizations  disable compiler optimizations
 318   --enable-extra-warnings  enable more compiler warnings
 319   --disable-stripping      disable stripping of executables and shared libraries
 320   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 321                            2 causes a slowdown at runtime.
 322   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 323   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 324                            leaks and errors, using the specified valgrind binary.
 325                            Cannot be combined with --target-exec
 326   --enable-ftrapv          Trap arithmetic overflows
 327   --samples=PATH           location of test samples for FATE, if not set use
 328                            \$FATE_SAMPLES at make invocation time.
 329   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 330                            should be used only for debugging purposes)
 331   --enable-random          randomly enable/disable components
 332   --disable-random
 333   --enable-random=LIST     randomly enable/disable specific components or
 334   --disable-random=LIST    component groups. LIST is a comma-separated list
 335                            of NAME[:PROB] entries where NAME is a component
 336                            (group) and PROB the probability associated with
 337                            NAME (default 0.5).
 338   --random-seed=VALUE      seed value for --enable/disable-random
 339
 340 NOTE: Object files are built at the place where configure is launched.
 341 EOF
 342   exit 0
 343 }
 344
 345 quotes='""'
 346
 347 log(){
 348     echo "$@" >> $logfile
 349 }
 350
 351 log_file(){
 352     log BEGIN $1
 353     pr -n -t $1 >> $logfile
 354     log END $1
 355 }
 356
 357 echolog(){
 358     log "$@"
 359     echo "$@"
 360 }
 361
 362 warn(){
 363     log "WARNING: $*"
 364     WARNINGS="${WARNINGS}WARNING: $*\n"
 365 }
 366
 367 die(){
 368     echolog "$@"
 369     cat <<EOF
 370
 371 If you think configure made a mistake, make sure you are using the latest
 372 version from Git.  If the latest version fails, report the problem to the
 373 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 374 EOF
 375     if disabled logging; then
 376         cat <<EOF
 377 Rerun configure with logging enabled (do not use --disable-logging), and
 378 include the log this produces with your report.
 379 EOF
 380     else
 381         cat <<EOF
 382 Include the log file "$logfile" produced by configure as this will help
 383 solving the problem.
 384 EOF
 385     fi
 386     exit 1
 387 }
 388
 389 # Avoid locale weirdness, besides we really just want to translate ASCII.
 390 toupper(){
 391     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 392 }
 393
 394 tolower(){
 395     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 396 }
 397
 398 c_escape(){
 399     echo "$*" | sed 's/["\\]/\\\0/g'
 400 }
 401
 402 sh_quote(){
 403     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 404     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 405     echo "$v"
 406 }
 407
 408 cleanws(){
 409     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 410 }
 411
 412 filter(){
 413     pat=$1
 414     shift
 415     for v; do
 416         eval "case $v in $pat) echo $v ;; esac"
 417     done
 418 }
 419
 420 filter_out(){
 421     pat=$1
 422     shift
 423     for v; do
 424         eval "case $v in $pat) ;; *) echo $v ;; esac"
 425     done
 426 }
 427
 428 map(){
 429     m=$1
 430     shift
 431     for v; do eval $m; done
 432 }
 433
 434 add_suffix(){
 435     suffix=$1
 436     shift
 437     for v; do echo ${v}${suffix}; done
 438 }
 439
 440 set_all(){
 441     value=$1
 442     shift
 443     for var in $*; do
 444         eval $var=$value
 445     done
 446 }
 447
 448 set_weak(){
 449     value=$1
 450     shift
 451     for var; do
 452         eval : \${$var:=$value}
 453     done
 454 }
 455
 456 set_safe(){
 457     var=$1
 458     shift
 459     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 460 }
 461
 462 get_safe(){
 463     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 464 }
 465
 466 pushvar(){
 467     for var in $*; do
 468         eval level=\${${var}_level:=0}
 469         eval ${var}_${level}="\$$var"
 470         eval ${var}_level=$(($level+1))
 471     done
 472 }
 473
 474 popvar(){
 475     for var in $*; do
 476         eval level=\${${var}_level:-0}
 477         test $level = 0 && continue
 478         eval level=$(($level-1))
 479         eval $var="\${${var}_${level}}"
 480         eval ${var}_level=$level
 481         eval unset ${var}_${level}
 482     done
 483 }
 484
 485 enable(){
 486     set_all yes $*
 487 }
 488
 489 disable(){
 490     set_all no $*
 491 }
 492
 493 enable_weak(){
 494     set_weak yes $*
 495 }
 496
 497 disable_weak(){
 498     set_weak no $*
 499 }
 500
 501 enable_safe(){
 502     for var; do
 503         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 504     done
 505 }
 506
 507 disable_safe(){
 508     for var; do
 509         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 510     done
 511 }
 512
 513 do_enable_deep(){
 514     for var; do
 515         enabled $var && continue
 516         eval sel="\$${var}_select"
 517         eval sgs="\$${var}_suggest"
 518         pushvar var sgs
 519         enable_deep $sel
 520         popvar sgs
 521         enable_deep_weak $sgs
 522         popvar var
 523     done
 524 }
 525
 526 enable_deep(){
 527     do_enable_deep $*
 528     enable $*
 529 }
 530
 531 enable_deep_weak(){
 532     do_enable_deep $*
 533     enable_weak $*
 534 }
 535
 536 enabled(){
 537     test "${1#!}" = "$1" && op== || op=!=
 538     eval test "x\$${1#!}" $op "xyes"
 539 }
 540
 541 disabled(){
 542     test "${1#!}" = "$1" && op== || op=!=
 543     eval test "x\$${1#!}" $op "xno"
 544 }
 545
 546 enabled_all(){
 547     for opt; do
 548         enabled $opt || return 1
 549     done
 550 }
 551
 552 disabled_all(){
 553     for opt; do
 554         disabled $opt || return 1
 555     done
 556 }
 557
 558 enabled_any(){
 559     for opt; do
 560         enabled $opt && return 0
 561     done
 562 }
 563
 564 disabled_any(){
 565     for opt; do
 566         disabled $opt && return 0
 567     done
 568     return 1
 569 }
 570
 571 set_default(){
 572     for opt; do
 573         eval : \${$opt:=\$${opt}_default}
 574     done
 575 }
 576
 577 is_in(){
 578     value=$1
 579     shift
 580     for var in $*; do
 581         [ $var = $value ] && return 0
 582     done
 583     return 1
 584 }
 585
 586 do_check_deps(){
 587     for cfg; do
 588         cfg="${cfg#!}"
 589         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 590         disabled ${cfg}_checking && continue
 591         enable ${cfg}_checking
 592         append allopts $cfg
 593
 594         eval dep_all="\$${cfg}_deps"
 595         eval dep_any="\$${cfg}_deps_any"
 596         eval dep_sel="\$${cfg}_select"
 597         eval dep_sgs="\$${cfg}_suggest"
 598         eval dep_ifa="\$${cfg}_if"
 599         eval dep_ifn="\$${cfg}_if_any"
 600
 601         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 602         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 603         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 604
 605         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 606         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 607         enabled_all  $dep_all || disable $cfg
 608         enabled_any  $dep_any || disable $cfg
 609         disabled_any $dep_sel && disable $cfg
 610
 611         if enabled $cfg; then
 612             enable_deep $dep_sel
 613             enable_deep_weak $dep_sgs
 614         fi
 615
 616         disable ${cfg}_checking
 617     done
 618 }
 619
 620 check_deps(){
 621     unset allopts
 622
 623     do_check_deps "$@"
 624
 625     for cfg in $allopts; do
 626         enabled $cfg || continue
 627         eval dep_extralibs="\$${cfg}_extralibs"
 628         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 629     done
 630 }
 631
 632 print_config(){
 633     pfx=$1
 634     files=$2
 635     shift 2
 636     map 'eval echo "$v \${$v:-no}"' "$@" |
 637     awk "BEGIN { split(\"$files\", files) }
 638         {
 639             c = \"$pfx\" toupper(\$1);
 640             v = \$2;
 641             sub(/yes/, 1, v);
 642             sub(/no/,  0, v);
 643             for (f in files) {
 644                 file = files[f];
 645                 if (file ~ /\\.h\$/) {
 646                     printf(\"#define %s %d\\n\", c, v) >>file;
 647                 } else if (file ~ /\\.asm\$/) {
 648                     printf(\"%%define %s %d\\n\", c, v) >>file;
 649                 } else if (file ~ /\\.mak\$/) {
 650                     n = -v ? \"\" : \"!\";
 651                     printf(\"%s%s=yes\\n\", n, c) >>file;
 652                 }
 653             }
 654         }"
 655 }
 656
 657 print_enabled(){
 658     suf=$1
 659     shift
 660     for v; do
 661         enabled $v && printf "%s\n" ${v%$suf};
 662     done
 663 }
 664
 665 append(){
 666     var=$1
 667     shift
 668     eval "$var=\"\$$var $*\""
 669 }
 670
 671 prepend(){
 672     var=$1
 673     shift
 674     eval "$var=\"$* \$$var\""
 675 }
 676
 677 add_cppflags(){
 678     append CPPFLAGS "$@"
 679 }
 680
 681 add_cflags(){
 682     append CFLAGS $($cflags_filter "$@")
 683 }
 684
 685 add_cxxflags(){
 686     append CXXFLAGS $($cflags_filter "$@")
 687 }
 688
 689 add_asflags(){
 690     append ASFLAGS $($asflags_filter "$@")
 691 }
 692
 693 add_ldflags(){
 694     append LDFLAGS $($ldflags_filter "$@")
 695 }
 696
 697 add_extralibs(){
 698     prepend extralibs $($ldflags_filter "$@")
 699 }
 700
 701 add_host_cflags(){
 702     append host_cflags $($host_cflags_filter "$@")
 703 }
 704
 705 add_host_ldflags(){
 706     append host_ldflags $($host_ldflags_filter "$@")
 707 }
 708
 709 add_compat(){
 710     append compat_objs $1
 711     shift
 712     map 'add_cppflags -D$v' "$@"
 713 }
 714
 715 check_cmd(){
 716     log "$@"
 717     "$@" >> $logfile 2>&1
 718 }
 719
 720 cc_o(){
 721     eval printf '%s\\n' $CC_O
 722 }
 723
 724 cc_e(){
 725     eval printf '%s\\n' $CC_E
 726 }
 727
 728 check_cc(){
 729     log check_cc "$@"
 730     cat > $TMPC
 731     log_file $TMPC
 732     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 733 }
 734
 735 check_cxx(){
 736     log check_cxx "$@"
 737     cat > $TMPCPP
 738     log_file $TMPCPP
 739     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 740 }
 741
 742 check_cpp(){
 743     log check_cpp "$@"
 744     cat > $TMPC
 745     log_file $TMPC
 746     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 747 }
 748
 749 as_o(){
 750     eval printf '%s\\n' $AS_O
 751 }
 752
 753 check_as(){
 754     log check_as "$@"
 755     cat > $TMPS
 756     log_file $TMPS
 757     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 758 }
 759
 760 check_inline_asm(){
 761     log check_inline_asm "$@"
 762     name="$1"
 763     code="$2"
 764     shift 2
 765     disable $name
 766     check_cc "$@" <<EOF && enable $name
 767 void foo(void){ __asm__ volatile($code); }
 768 EOF
 769 }
 770
 771 check_insn(){
 772     log check_insn "$@"
 773     check_inline_asm ${1}_inline "\"$2\""
 774     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 775 }
 776
 777 check_yasm(){
 778     log check_yasm "$@"
 779     echo "$1" > $TMPS
 780     log_file $TMPS
 781     shift 1
 782     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 783 }
 784
 785 ld_o(){
 786     eval printf '%s\\n' $LD_O
 787 }
 788
 789 check_ld(){
 790     log check_ld "$@"
 791     type=$1
 792     shift 1
 793     flags=$(filter_out '-l*' $@)
 794     libs=$(filter '-l*' $@)
 795     check_$type $($cflags_filter $flags) || return
 796     flags=$($ldflags_filter $flags)
 797     libs=$($ldflags_filter $libs)
 798     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 799 }
 800
 801 check_code(){
 802     log check_code "$@"
 803     check=$1
 804     headers=$2
 805     code=$3
 806     shift 3
 807     {
 808         for hdr in $headers; do
 809             echo "#include <$hdr>"
 810         done
 811         echo "int main(void) { $code; return 0; }"
 812     } | check_$check "$@"
 813 }
 814
 815 check_cppflags(){
 816     log check_cppflags "$@"
 817     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 818 int x;
 819 EOF
 820 }
 821
 822 check_cflags(){
 823     log check_cflags "$@"
 824     set -- $($cflags_filter "$@")
 825     check_cc "$@" <<EOF && append CFLAGS "$@"
 826 int x;
 827 EOF
 828 }
 829
 830 check_cxxflags(){
 831     log check_cxxflags "$@"
 832     set -- $($cflags_filter "$@")
 833     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 834 int x;
 835 EOF
 836 }
 837
 838 test_ldflags(){
 839     log test_ldflags "$@"
 840     check_ld "cc" "$@" <<EOF
 841 int main(void){ return 0; }
 842 EOF
 843 }
 844
 845 check_ldflags(){
 846     log check_ldflags "$@"
 847     test_ldflags "$@" && add_ldflags "$@"
 848 }
 849
 850 check_header(){
 851     log check_header "$@"
 852     header=$1
 853     shift
 854     disable_safe $header
 855     check_cpp "$@" <<EOF && enable_safe $header
 856 #include <$header>
 857 int x;
 858 EOF
 859 }
 860
 861 check_func(){
 862     log check_func "$@"
 863     func=$1
 864     shift
 865     disable $func
 866     check_ld "cc" "$@" <<EOF && enable $func
 867 extern int $func();
 868 int main(void){ $func(); }
 869 EOF
 870 }
 871
 872 check_mathfunc(){
 873     log check_mathfunc "$@"
 874     func=$1
 875     narg=$2
 876     shift 2
 877     test $narg = 2 && args="f, g" || args="f"
 878     disable $func
 879     check_ld "cc" "$@" <<EOF && enable $func
 880 #include <math.h>
 881 float foo(float f, float g) { return $func($args); }
 882 int main(void){ return (int) foo; }
 883 EOF
 884 }
 885
 886 check_func_headers(){
 887     log check_func_headers "$@"
 888     headers=$1
 889     funcs=$2
 890     shift 2
 891     {
 892         for hdr in $headers; do
 893             echo "#include <$hdr>"
 894         done
 895         for func in $funcs; do
 896             echo "long check_$func(void) { return (long) $func; }"
 897         done
 898         echo "int main(void) { return 0; }"
 899     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 900 }
 901
 902 check_class_headers_cpp(){
 903     log check_class_headers_cpp "$@"
 904     headers=$1
 905     classes=$2
 906     shift 2
 907     {
 908         for hdr in $headers; do
 909             echo "#include <$hdr>"
 910         done
 911         echo "int main(void) { "
 912         i=1
 913         for class in $classes; do
 914             echo "$class obj$i;"
 915             i=$(expr $i + 1)
 916         done
 917         echo "return 0; }"
 918     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 919 }
 920
 921 check_cpp_condition(){
 922     log check_cpp_condition "$@"
 923     header=$1
 924     condition=$2
 925     shift 2
 926     check_cpp "$@" <<EOF
 927 #include <$header>
 928 #if !($condition)
 929 #error "unsatisfied condition: $condition"
 930 #endif
 931 EOF
 932 }
 933
 934 check_lib(){
 935     log check_lib "$@"
 936     header="$1"
 937     func="$2"
 938     shift 2
 939     check_header $header && check_func $func "$@" && add_extralibs "$@"
 940 }
 941
 942 check_lib2(){
 943     log check_lib2 "$@"
 944     headers="$1"
 945     funcs="$2"
 946     shift 2
 947     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 948 }
 949
 950 check_lib_cpp(){
 951     log check_lib_cpp "$@"
 952     headers="$1"
 953     classes="$2"
 954     shift 2
 955     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 956 }
 957
 958 check_pkg_config(){
 959     log check_pkg_config "$@"
 960     pkg="$1"
 961     headers="$2"
 962     funcs="$3"
 963     shift 3
 964     $pkg_config --exists $pkg 2>/dev/null || return
 965     pkg_cflags=$($pkg_config --cflags $pkg)
 966     pkg_libs=$($pkg_config --libs $pkg)
 967     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 968         set_safe ${pkg}_cflags $pkg_cflags   &&
 969         set_safe ${pkg}_libs   $pkg_libs
 970 }
 971
 972 check_exec(){
 973     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 974 }
 975
 976 check_exec_crash(){
 977     code=$(cat)
 978
 979     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 980     # are safe but may not be available everywhere.  Thus we use
 981     # raise(SIGTERM) instead.  The check is run in a subshell so we
 982     # can redirect the "Terminated" message from the shell.  SIGBUS
 983     # is not defined by standard C so it is used conditionally.
 984
 985     (check_exec "$@") >> $logfile 2>&1 <<EOF
 986 #include <signal.h>
 987 static void sighandler(int sig){
 988     raise(SIGTERM);
 989 }
 990 int func(void){
 991     $code
 992 }
 993 int (*func_ptr)(void) = func;
 994 int main(void){
 995     signal(SIGILL, sighandler);
 996     signal(SIGFPE, sighandler);
 997     signal(SIGSEGV, sighandler);
 998 #ifdef SIGBUS
 999     signal(SIGBUS, sighandler);
1000 #endif
1001     return func_ptr();
1002 }
1003 EOF
1004 }
1005
1006 check_type(){
1007     log check_type "$@"
1008     headers=$1
1009     type=$2
1010     shift 2
1011     disable_safe "$type"
1012     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1013 }
1014
1015 check_struct(){
1016     log check_type "$@"
1017     headers=$1
1018     struct=$2
1019     member=$3
1020     shift 3
1021     disable_safe "${struct}_${member}"
1022     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1023         enable_safe "${struct}_${member}"
1024 }
1025
1026 require(){
1027     name="$1"
1028     header="$2"
1029     func="$3"
1030     shift 3
1031     check_lib $header $func "$@" || die "ERROR: $name not found"
1032 }
1033
1034 require2(){
1035     name="$1"
1036     headers="$2"
1037     func="$3"
1038     shift 3
1039     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1040 }
1041
1042 require_cpp(){
1043     name="$1"
1044     headers="$2"
1045     classes="$3"
1046     shift 3
1047     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1048 }
1049
1050 require_pkg_config(){
1051     pkg="$1"
1052     check_pkg_config "$@" || die "ERROR: $pkg not found"
1053     add_cflags    $(get_safe ${pkg}_cflags)
1054     add_extralibs $(get_safe ${pkg}_libs)
1055 }
1056
1057 hostcc_o(){
1058     eval printf '%s\\n' $HOSTCC_O
1059 }
1060
1061 check_host_cc(){
1062     log check_host_cc "$@"
1063     cat > $TMPC
1064     log_file $TMPC
1065     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1066 }
1067
1068 check_host_cflags(){
1069     log check_host_cflags "$@"
1070     set -- $($host_cflags_filter "$@")
1071     check_host_cc "$@" <<EOF && append host_cflags "$@"
1072 int x;
1073 EOF
1074 }
1075
1076 apply(){
1077     file=$1
1078     shift
1079     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1080 }
1081
1082 cp_if_changed(){
1083     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1084     mkdir -p "$(dirname $2)"
1085     $cp_f "$1" "$2"
1086 }
1087
1088 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1089 # system-dependent things.
1090
1091 COMPONENT_LIST="
1092     bsfs
1093     decoders
1094     demuxers
1095     encoders
1096     filters
1097     hwaccels
1098     indevs
1099     muxers
1100     outdevs
1101     parsers
1102     protocols
1103 "
1104
1105 DOCUMENT_LIST="
1106     doc
1107     htmlpages
1108     manpages
1109     podpages
1110     txtpages
1111 "
1112
1113 LIBRARY_LIST="
1114     avcodec
1115     avdevice
1116     avfilter
1117     avformat
1118     avresample
1119     avutil
1120     swresample
1121     swscale
1122 "
1123
1124 PROGRAM_LIST="
1125     ffplay
1126     ffprobe
1127     ffserver
1128     ffmpeg
1129 "
1130
1131 CONFIG_LIST="
1132     $COMPONENT_LIST
1133     $DOCUMENT_LIST
1134     $LIBRARY_LIST
1135     $PROGRAM_LIST
1136     avisynth
1137     bzlib
1138     crystalhd
1139     dct
1140     dwt
1141     dxva2
1142     fast_unaligned
1143     fft
1144     fontconfig
1145     frei0r
1146     ftrapv
1147     gnutls
1148     gpl
1149     gray
1150     hardcoded_tables
1151     incompatible_fork_abi
1152     libaacplus
1153     libass
1154     libbluray
1155     libcaca
1156     libcdio
1157     libcelt
1158     libdc1394
1159     libfaac
1160     libfdk_aac
1161     libflite
1162     libfreetype
1163     libgsm
1164     libiec61883
1165     libilbc
1166     libmodplug
1167     libmp3lame
1168     libnut
1169     libopencore_amrnb
1170     libopencore_amrwb
1171     libopencv
1172     libopenjpeg
1173     libopus
1174     libpulse
1175     librtmp
1176     libschroedinger
1177     libsoxr
1178     libspeex
1179     libstagefright_h264
1180     libtheora
1181     libtwolame
1182     libutvideo
1183     libv4l2
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libx264
1189     libxavs
1190     libxvid
1191     lsp
1192     lzo
1193     mdct
1194     memalign_hack
1195     memory_poisoning
1196     network
1197     nonfree
1198     openal
1199     openssl
1200     pic
1201     postproc
1202     rdft
1203     runtime_cpudetect
1204     safe_bitstream_reader
1205     shared
1206     small
1207     sram
1208     static
1209     swscale_alpha
1210     thumb
1211     vaapi
1212     vda
1213     vdpau
1214     version3
1215     xmm_clobber_test
1216     x11grab
1217     zlib
1218 "
1219
1220 THREADS_LIST='
1221     pthreads
1222     w32threads
1223     os2threads
1224 '
1225
1226 ARCH_LIST='
1227     aarch64
1228     alpha
1229     arm
1230     avr32
1231     avr32_ap
1232     avr32_uc
1233     bfin
1234     ia64
1235     m68k
1236     mips
1237     mips64
1238     parisc
1239     ppc
1240     ppc64
1241     s390
1242     sh4
1243     sparc
1244     sparc64
1245     tilegx
1246     tilepro
1247     tomi
1248     x86
1249     x86_32
1250     x86_64
1251 '
1252
1253 ARCH_EXT_LIST_ARM='
1254     armv5te
1255     armv6
1256     armv6t2
1257     neon
1258     vfp
1259     vfpv3
1260 '
1261
1262 ARCH_EXT_LIST_X86='
1263     amd3dnow
1264     amd3dnowext
1265     avx
1266     fma4
1267     mmx
1268     mmxext
1269     sse
1270     sse2
1271     sse3
1272     sse4
1273     sse42
1274     ssse3
1275 '
1276
1277 ARCH_EXT_LIST="
1278     $ARCH_EXT_LIST_ARM
1279     $ARCH_EXT_LIST_X86
1280     altivec
1281     ppc4xx
1282     vis
1283     mipsfpu
1284     mips32r2
1285     mipsdspr1
1286     mipsdspr2
1287 "
1288
1289 HAVE_LIST_CMDLINE='
1290     inline_asm
1291     symver
1292     yasm
1293 '
1294
1295 HAVE_LIST_PUB='
1296     bigendian
1297     fast_unaligned
1298     incompatible_fork_abi
1299 '
1300
1301 MATH_FUNCS="
1302     atanf
1303     atan2f
1304     cbrtf
1305     cosf
1306     exp2
1307     exp2f
1308     expf
1309     isinf
1310     isnan
1311     ldexpf
1312     llrint
1313     llrintf
1314     log2
1315     log2f
1316     log10f
1317     lrint
1318     lrintf
1319     powf
1320     rint
1321     round
1322     roundf
1323     sinf
1324     trunc
1325     truncf
1326 "
1327
1328 HAVE_LIST="
1329     $ARCH_EXT_LIST
1330     $(add_suffix _external $ARCH_EXT_LIST)
1331     $(add_suffix _inline   $ARCH_EXT_LIST)
1332     $HAVE_LIST_CMDLINE
1333     $HAVE_LIST_PUB
1334     $THREADS_LIST
1335     $MATH_FUNCS
1336     access
1337     aligned_malloc
1338     aligned_stack
1339     alsa_asoundlib_h
1340     altivec_h
1341     arpa_inet_h
1342     asm_mod_q
1343     asm_mod_y
1344     asm_types_h
1345     attribute_may_alias
1346     attribute_packed
1347     clock_gettime
1348     closesocket
1349     cmov
1350     CommandLineToArgvW
1351     cpunop
1352     CryptGenRandom
1353     dcbzl
1354     dev_bktr_ioctl_bt848_h
1355     dev_bktr_ioctl_meteor_h
1356     dev_ic_bt8xx_h
1357     dev_video_bktr_ioctl_bt848_h
1358     dev_video_meteor_ioctl_meteor_h
1359     direct_h
1360     dlfcn_h
1361     dlopen
1362     dos_paths
1363     dxva_h
1364     ebp_available
1365     ebx_available
1366     fast_64bit
1367     fast_clz
1368     fast_cmov
1369     fcntl
1370     fork
1371     getaddrinfo
1372     gethrtime
1373     getopt
1374     GetProcessAffinityMask
1375     GetProcessMemoryInfo
1376     GetProcessTimes
1377     GetSystemTimeAsFileTime
1378     getrusage
1379     getservbyport
1380     gettimeofday
1381     glob
1382     gnu_as
1383     ibm_asm
1384     inet_aton
1385     io_h
1386     isatty
1387     jack_port_get_latency_range
1388     kbhit
1389     ldbrx
1390     libdc1394_1
1391     libdc1394_2
1392     local_aligned_16
1393     local_aligned_8
1394     localtime_r
1395     loongson
1396     lzo1x_999_compress
1397     machine_ioctl_bt848_h
1398     machine_ioctl_meteor_h
1399     makeinfo
1400     malloc_h
1401     MapViewOfFile
1402     memalign
1403     mkstemp
1404     mm_empty
1405     mmap
1406     mprotect
1407     msvcrt
1408     nanosleep
1409     PeekNamedPipe
1410     perl
1411     pod2man
1412     poll_h
1413     posix_memalign
1414     pthread_cancel
1415     rdtsc
1416     rsync_contimeout
1417     sched_getaffinity
1418     sdl
1419     sdl_video_size
1420     SetConsoleTextAttribute
1421     setmode
1422     setrlimit
1423     Sleep
1424     sndio_h
1425     socklen_t
1426     soundcard_h
1427     strerror_r
1428     struct_addrinfo
1429     struct_group_source_req
1430     struct_ip_mreq_source
1431     struct_ipv6_mreq
1432     struct_pollfd
1433     struct_rusage_ru_maxrss
1434     struct_sctp_event_subscribe
1435     struct_sockaddr_in6
1436     struct_sockaddr_sa_len
1437     struct_sockaddr_storage
1438     struct_v4l2_frmivalenum_discrete
1439     symver_asm_label
1440     symver_gnu_asm
1441     sysconf
1442     sysctl
1443     sys_mman_h
1444     sys_param_h
1445     sys_resource_h
1446     sys_select_h
1447     sys_soundcard_h
1448     sys_time_h
1449     sys_videoio_h
1450     termios_h
1451     texi2html
1452     threads
1453     unistd_h
1454     usleep
1455     vfp_args
1456     VirtualAlloc
1457     windows_h
1458     winsock2_h
1459     xform_asm
1460     xmm_clobbers
1461 "
1462
1463 # options emitted with CONFIG_ prefix but not available on command line
1464 CONFIG_EXTRA="
1465     aandcttables
1466     ac3dsp
1467     error_resilience
1468     gcrypt
1469     golomb
1470     gplv3
1471     h264chroma
1472     h264dsp
1473     h264pred
1474     h264qpel
1475     huffman
1476     lgplv3
1477     lpc
1478     mpegaudio
1479     mpegaudiodsp
1480     mpegvideo
1481     mpegvideoenc
1482     nettle
1483     rangecoder
1484     rtpdec
1485     sinewin
1486     vp3dsp
1487 "
1488
1489 CMDLINE_SELECT="
1490     $ARCH_EXT_LIST
1491     $CONFIG_LIST
1492     $HAVE_LIST_CMDLINE
1493     $THREADS_LIST
1494     asm
1495     coverage
1496     cross_compile
1497     debug
1498     extra_warnings
1499     logging
1500     lto
1501     optimizations
1502     stripping
1503 "
1504
1505 PATHS_LIST='
1506     bindir
1507     datadir
1508     incdir
1509     libdir
1510     mandir
1511     prefix
1512     shlibdir
1513 '
1514
1515 CMDLINE_SET="
1516     $PATHS_LIST
1517     ar
1518     arch
1519     as
1520     assert_level
1521     build_suffix
1522     cc
1523     cpu
1524     cross_prefix
1525     cxx
1526     dep_cc
1527     extra_version
1528     host_cc
1529     host_cflags
1530     host_ld
1531     host_ldflags
1532     host_libs
1533     host_os
1534     install
1535     ld
1536     logfile
1537     malloc_prefix
1538     nm
1539     optflags
1540     pkg_config
1541     postproc_version
1542     progs_suffix
1543     random_seed
1544     samples
1545     strip
1546     sysinclude
1547     sysroot
1548     target_exec
1549     target_os
1550     target_path
1551     toolchain
1552     valgrind
1553     yasmexe
1554 "
1555
1556 CMDLINE_APPEND="
1557     extra_cflags
1558     extra_cxxflags
1559 "
1560
1561 # code dependency declarations
1562
1563 # architecture extensions
1564
1565 armv5te_deps="arm"
1566 armv6_deps="arm"
1567 armv6t2_deps="arm"
1568 neon_deps="arm"
1569 vfp_deps="arm"
1570 vfpv3_deps="vfp"
1571
1572 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1573
1574 mipsfpu_deps="mips"
1575 mips32r2_deps="mips"
1576 mipsdspr1_deps="mips"
1577 mipsdspr2_deps="mips"
1578
1579 altivec_deps="ppc"
1580 ppc4xx_deps="ppc"
1581
1582 vis_deps="sparc"
1583
1584 x86_64_suggest="cmov fast_cmov"
1585
1586 amd3dnow_deps="mmx"
1587 amd3dnowext_deps="amd3dnow"
1588 mmx_deps="x86"
1589 mmxext_deps="mmx"
1590 sse_deps="mmxext"
1591 sse2_deps="sse"
1592 sse3_deps="sse2"
1593 ssse3_deps="sse3"
1594 sse4_deps="ssse3"
1595 sse42_deps="sse4"
1596 avx_deps="sse42"
1597 fma4_deps="avx"
1598
1599 mmx_external_deps="yasm"
1600 mmx_inline_deps="inline_asm"
1601 mmx_suggest="mmx_external mmx_inline"
1602
1603 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1604     eval dep=\$${ext}_deps
1605     eval ${ext}_external_deps='"${dep}_external"'
1606     eval ${ext}_inline_deps='"${dep}_inline"'
1607     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1608 done
1609
1610 aligned_stack_if_any="ppc x86"
1611 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1612 fast_clz_if_any="alpha avr32 mips ppc x86"
1613 fast_unaligned_if_any="ppc x86"
1614
1615 inline_asm_deps="!tms470"
1616 need_memalign="altivec neon sse"
1617
1618 symver_if_any="symver_asm_label symver_gnu_asm"
1619
1620 log2_deps="!msvcrt"
1621
1622 # subsystems
1623 dct_select="rdft"
1624 mdct_select="fft"
1625 rdft_select="fft"
1626 mpegaudio_select="mpegaudiodsp"
1627 mpegaudiodsp_select="dct"
1628 mpegvideoenc_select="mpegvideo"
1629
1630 # decoders / encoders / hardware accelerators
1631 aac_decoder_select="mdct sinewin"
1632 aac_encoder_select="mdct sinewin"
1633 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1634 ac3_decoder_select="mdct ac3dsp ac3_parser"
1635 ac3_encoder_select="mdct ac3dsp"
1636 ac3_fixed_encoder_select="mdct ac3dsp"
1637 alac_encoder_select="lpc"
1638 amrnb_decoder_select="lsp"
1639 amrwb_decoder_select="lsp"
1640 amv_encoder_select="aandcttables"
1641 atrac1_decoder_select="mdct sinewin"
1642 atrac3_decoder_select="mdct"
1643 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1644 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1645 cavs_decoder_select="golomb mpegvideo"
1646 comfortnoise_encoder_select="lpc"
1647 cook_decoder_select="mdct sinewin"
1648 cscd_decoder_select="lzo"
1649 cscd_decoder_suggest="zlib"
1650 dca_decoder_select="mdct"
1651 dirac_decoder_select="dwt golomb"
1652 dnxhd_encoder_select="aandcttables mpegvideoenc"
1653 dxa_decoder_select="zlib"
1654 eac3_decoder_select="ac3_decoder"
1655 eac3_encoder_select="ac3_encoder"
1656 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1657 eatgq_decoder_select="aandcttables"
1658 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1659 exr_decoder_select="zlib"
1660 ffv1_decoder_select="golomb rangecoder"
1661 ffv1_encoder_select="rangecoder"
1662 ffvhuff_encoder_select="huffman"
1663 flac_decoder_select="golomb"
1664 flac_encoder_select="golomb lpc"
1665 flashsv_decoder_select="zlib"
1666 flashsv_encoder_select="zlib"
1667 flashsv2_encoder_select="zlib"
1668 flashsv2_decoder_select="zlib"
1669 flv_decoder_select="h263_decoder"
1670 flv_encoder_select="h263_encoder"
1671 fraps_decoder_select="huffman"
1672 h261_decoder_select="error_resilience mpegvideo"
1673 h261_encoder_select="aandcttables mpegvideoenc"
1674 h263_decoder_select="error_resilience h263_parser mpegvideo"
1675 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1676 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1677 h263i_decoder_select="h263_decoder"
1678 h263p_encoder_select="h263_encoder"
1679 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1680 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1681 h264_dxva2_hwaccel_deps="dxva2api_h"
1682 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1683 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1684 h264_vda_decoder_select="vda h264_parser h264_decoder"
1685 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1686 h264_vda_hwaccel_select="vda h264_decoder"
1687 h264_vdpau_decoder_select="vdpau h264_decoder"
1688 huffyuv_encoder_select="huffman"
1689 iac_decoder_select="fft mdct sinewin"
1690 imc_decoder_select="fft mdct sinewin"
1691 jpegls_decoder_select="golomb"
1692 jpegls_encoder_select="golomb"
1693 ljpeg_encoder_select="aandcttables mpegvideoenc"
1694 loco_decoder_select="golomb"
1695 mdec_decoder_select="error_resilience mpegvideo"
1696 mjpeg_encoder_select="aandcttables mpegvideoenc"
1697 mlp_decoder_select="mlp_parser"
1698 mp1_decoder_select="mpegaudio"
1699 mp1float_decoder_select="mpegaudio"
1700 mp2_decoder_select="mpegaudio"
1701 mp2float_decoder_select="mpegaudio"
1702 mp3_decoder_select="mpegaudio"
1703 mp3adu_decoder_select="mpegaudio"
1704 mp3adufloat_decoder_select="mpegaudio"
1705 mp3float_decoder_select="mpegaudio"
1706 mp3on4_decoder_select="mpegaudio"
1707 mp3on4float_decoder_select="mpegaudio"
1708 mpc7_decoder_select="mpegaudiodsp"
1709 mpc8_decoder_select="mpegaudiodsp"
1710 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1711 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1712 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1713 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1714 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1715 mpeg1video_decoder_select="error_resilience mpegvideo"
1716 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1717 mpeg2_crystalhd_decoder_select="crystalhd"
1718 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1719 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1720 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1721 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1722 mpeg2video_decoder_select="error_resilience mpegvideo"
1723 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1724 mpeg4_crystalhd_decoder_select="crystalhd"
1725 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1726 mpeg4_encoder_select="h263_encoder"
1727 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1728 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1729 msmpeg4_crystalhd_decoder_select="crystalhd"
1730 msmpeg4v1_decoder_select="h263_decoder"
1731 msmpeg4v1_encoder_select="h263_encoder"
1732 msmpeg4v2_decoder_select="h263_decoder"
1733 msmpeg4v2_encoder_select="h263_encoder"
1734 msmpeg4v3_decoder_select="h263_decoder"
1735 msmpeg4v3_encoder_select="h263_encoder"
1736 mss2_decoder_select="vc1_decoder"
1737 nellymoser_decoder_select="mdct sinewin"
1738 nellymoser_encoder_select="mdct sinewin"
1739 nuv_decoder_select="lzo"
1740 png_decoder_select="zlib"
1741 png_encoder_select="zlib"
1742 qcelp_decoder_select="lsp"
1743 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1744 ra_144_encoder_select="lpc"
1745 ralf_decoder_select="golomb"
1746 rv10_decoder_select="h263_decoder"
1747 rv10_encoder_select="h263_encoder"
1748 rv20_decoder_select="h263_decoder"
1749 rv20_encoder_select="h263_encoder"
1750 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1751 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1752 shorten_decoder_select="golomb"
1753 sipr_decoder_select="lsp"
1754 snow_decoder_select="dwt rangecoder"
1755 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1756 sonic_decoder_select="golomb"
1757 sonic_encoder_select="golomb"
1758 sonic_ls_encoder_select="golomb"
1759 svq1_decoder_select="error_resilience mpegvideo"
1760 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1761 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1762 svq3_decoder_suggest="zlib"
1763 theora_decoder_select="vp3_decoder"
1764 tiff_decoder_suggest="zlib"
1765 tiff_encoder_suggest="zlib"
1766 truehd_decoder_select="mlp_parser"
1767 tscc_decoder_select="zlib"
1768 twinvq_decoder_select="mdct lsp sinewin"
1769 utvideo_encoder_select="huffman"
1770 vc1_crystalhd_decoder_select="crystalhd"
1771 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1772 vc1_dxva2_hwaccel_deps="dxva2api_h"
1773 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1774 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1775 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1776 vc1image_decoder_select="vc1_decoder"
1777 vorbis_decoder_select="mdct"
1778 vorbis_encoder_select="mdct"
1779 vp3_decoder_select="vp3dsp"
1780 vp5_decoder_select="vp3dsp"
1781 vp6_decoder_select="huffman vp3dsp"
1782 vp6a_decoder_select="vp6_decoder"
1783 vp6f_decoder_select="vp6_decoder"
1784 vp8_decoder_select="h264pred h264qpel"
1785 wmapro_decoder_select="mdct sinewin"
1786 wmav1_decoder_select="mdct sinewin"
1787 wmav1_encoder_select="mdct sinewin"
1788 wmav2_decoder_select="mdct sinewin"
1789 wmav2_encoder_select="mdct sinewin"
1790 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1791 wmv1_decoder_select="h263_decoder"
1792 wmv1_encoder_select="h263_encoder"
1793 wmv2_decoder_select="h263_decoder"
1794 wmv2_encoder_select="h263_encoder"
1795 wmv3_decoder_select="vc1_decoder"
1796 wmv3_crystalhd_decoder_select="crystalhd"
1797 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1798 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1799 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1800 wmv3image_decoder_select="wmv3_decoder"
1801 zerocodec_decoder_select="zlib"
1802 zlib_decoder_select="zlib"
1803 zlib_encoder_select="zlib"
1804 zmbv_decoder_select="zlib"
1805 zmbv_encoder_select="zlib"
1806
1807 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1808 vaapi_deps="va_va_h"
1809 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1810 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1811
1812 # parsers
1813 h264_parser_select="error_resilience golomb h264dsp h264pred mpegvideo"
1814 mpeg4video_parser_select="error_resilience mpegvideo"
1815 mpegvideo_parser_select="error_resilience mpegvideo"
1816 vc1_parser_select="error_resilience mpegvideo"
1817
1818 # external libraries
1819 libaacplus_encoder_deps="libaacplus"
1820 libcelt_decoder_deps="libcelt"
1821 libfaac_encoder_deps="libfaac"
1822 libfdk_aac_encoder_deps="libfdk_aac"
1823 libgsm_decoder_deps="libgsm"
1824 libgsm_encoder_deps="libgsm"
1825 libgsm_ms_decoder_deps="libgsm"
1826 libgsm_ms_encoder_deps="libgsm"
1827 libilbc_decoder_deps="libilbc"
1828 libilbc_encoder_deps="libilbc"
1829 libmodplug_demuxer_deps="libmodplug"
1830 libmp3lame_encoder_deps="libmp3lame"
1831 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1832 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1833 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1834 libopenjpeg_decoder_deps="libopenjpeg"
1835 libopenjpeg_encoder_deps="libopenjpeg"
1836 libopus_decoder_deps="libopus"
1837 libopus_encoder_deps="libopus"
1838 libschroedinger_decoder_deps="libschroedinger"
1839 libschroedinger_encoder_deps="libschroedinger"
1840 libspeex_decoder_deps="libspeex"
1841 libspeex_encoder_deps="libspeex"
1842 libstagefright_h264_decoder_deps="libstagefright_h264"
1843 libtheora_encoder_deps="libtheora"
1844 libtwolame_encoder_deps="libtwolame"
1845 libvo_aacenc_encoder_deps="libvo_aacenc"
1846 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1847 libvorbis_decoder_deps="libvorbis"
1848 libvorbis_encoder_deps="libvorbis"
1849 libvpx_decoder_deps="libvpx"
1850 libvpx_encoder_deps="libvpx"
1851 libx264_encoder_deps="libx264"
1852 libx264rgb_encoder_deps="libx264"
1853 libxavs_encoder_deps="libxavs"
1854 libxvid_encoder_deps="libxvid"
1855 libutvideo_decoder_deps="libutvideo"
1856 libutvideo_encoder_deps="libutvideo"
1857
1858 # demuxers / muxers
1859 ac3_demuxer_select="ac3_parser"
1860 asf_stream_muxer_select="asf_muxer"
1861 avisynth_demuxer_deps="avisynth"
1862 dirac_demuxer_select="dirac_parser"
1863 dts_demuxer_select="dca_parser"
1864 dtshd_demuxer_select="dca_parser"
1865 eac3_demuxer_select="ac3_parser"
1866 f4v_muxer_select="mov_muxer"
1867 flac_demuxer_select="flac_parser"
1868 ipod_muxer_select="mov_muxer"
1869 ismv_muxer_select="mov_muxer"
1870 libnut_demuxer_deps="libnut"
1871 libnut_muxer_deps="libnut"
1872 matroska_audio_muxer_select="matroska_muxer"
1873 matroska_demuxer_suggest="bzlib lzo zlib"
1874 mov_demuxer_suggest="zlib"
1875 mp3_demuxer_select="mpegaudio_parser"
1876 mp4_muxer_select="mov_muxer"
1877 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1878 mpegtsraw_demuxer_select="mpegts_demuxer"
1879 mxf_d10_muxer_select="mxf_muxer"
1880 ogg_demuxer_select="golomb"
1881 psp_muxer_select="mov_muxer"
1882 rtp_demuxer_select="sdp_demuxer"
1883 rtp_muxer_select="mpegvideo"
1884 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1885 rtsp_demuxer_select="http_protocol rtpdec"
1886 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1887 sap_demuxer_select="sdp_demuxer"
1888 sap_muxer_select="rtp_muxer rtp_protocol"
1889 sdp_demuxer_select="rtpdec"
1890 smoothstreaming_muxer_select="ismv_muxer"
1891 spdif_muxer_select="aac_parser"
1892 tak_demuxer_select="tak_parser"
1893 tg2_muxer_select="mov_muxer"
1894 tgp_muxer_select="mov_muxer"
1895 vobsub_demuxer_select="mpegps_demuxer"
1896 w64_demuxer_deps="wav_demuxer"
1897
1898 # indevs / outdevs
1899 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1900 alsa_outdev_deps="alsa_asoundlib_h"
1901 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1902 caca_outdev_deps="libcaca"
1903 dshow_indev_deps="IBaseFilter"
1904 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1905 dv1394_indev_deps="dv1394 dv_demuxer"
1906 fbdev_indev_deps="linux_fb_h"
1907 iec61883_indev_deps="libiec61883"
1908 jack_indev_deps="jack_jack_h sem_timedwait"
1909 lavfi_indev_deps="avfilter"
1910 libcdio_indev_deps="libcdio"
1911 libdc1394_indev_deps="libdc1394"
1912 libv4l2_indev_deps="libv4l2"
1913 openal_indev_deps="openal"
1914 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1915 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1916 pulse_indev_deps="libpulse"
1917 sdl_outdev_deps="sdl"
1918 sndio_indev_deps="sndio_h"
1919 sndio_outdev_deps="sndio_h"
1920 v4l_indev_deps="linux_videodev_h"
1921 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1922 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1923 vfwcap_indev_extralibs="-lavicap32"
1924 x11grab_indev_deps="x11grab"
1925
1926 # protocols
1927 bluray_protocol_deps="libbluray"
1928 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1929 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1930 ffrtmpcrypt_protocol_select="tcp_protocol"
1931 ffrtmphttp_protocol_deps="!librtmp_protocol"
1932 ffrtmphttp_protocol_select="http_protocol"
1933 gopher_protocol_select="network"
1934 httpproxy_protocol_select="tcp_protocol"
1935 http_protocol_select="tcp_protocol"
1936 https_protocol_select="tls_protocol"
1937 librtmp_protocol_deps="librtmp"
1938 librtmpe_protocol_deps="librtmp"
1939 librtmps_protocol_deps="librtmp"
1940 librtmpt_protocol_deps="librtmp"
1941 librtmpte_protocol_deps="librtmp"
1942 mmsh_protocol_select="http_protocol"
1943 mmst_protocol_select="network"
1944 rtmp_protocol_deps="!librtmp_protocol"
1945 rtmp_protocol_select="tcp_protocol"
1946 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1947 rtmps_protocol_deps="!librtmp_protocol"
1948 rtmps_protocol_select="tls_protocol"
1949 rtmpt_protocol_select="ffrtmphttp_protocol"
1950 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1951 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1952 rtp_protocol_select="udp_protocol"
1953 sctp_protocol_deps="struct_sctp_event_subscribe"
1954 sctp_protocol_select="network"
1955 tcp_protocol_select="network"
1956 tls_protocol_deps_any="openssl gnutls"
1957 tls_protocol_select="tcp_protocol"
1958 udp_protocol_select="network"
1959
1960 # filters
1961 aconvert_filter_deps="swresample"
1962 amovie_filter_deps="avcodec avformat"
1963 aresample_filter_deps="swresample"
1964 ass_filter_deps="libass"
1965 asyncts_filter_deps="avresample"
1966 atempo_filter_deps="avcodec rdft"
1967 blackframe_filter_deps="gpl"
1968 boxblur_filter_deps="gpl"
1969 colormatrix_filter_deps="gpl"
1970 cropdetect_filter_deps="gpl"
1971 decimate_filter_deps="gpl avcodec"
1972 delogo_filter_deps="gpl"
1973 deshake_filter_deps="avcodec"
1974 drawtext_filter_deps="libfreetype"
1975 ebur128_filter_deps="gpl"
1976 flite_filter_deps="libflite"
1977 frei0r_filter_deps="frei0r dlopen"
1978 frei0r_filter_extralibs='$ldl'
1979 frei0r_src_filter_deps="frei0r dlopen"
1980 frei0r_src_filter_extralibs='$ldl'
1981 geq_filter_deps="gpl"
1982 hqdn3d_filter_deps="gpl"
1983 hue_filter_deps="gpl"
1984 movie_filter_deps="avcodec avformat"
1985 mp_filter_deps="gpl avcodec swscale postproc inline_asm"
1986 mptestsrc_filter_deps="gpl"
1987 negate_filter_deps="lut_filter"
1988 resample_filter_deps="avresample"
1989 ocv_filter_deps="libopencv"
1990 pan_filter_deps="swresample"
1991 removelogo_filter_deps="avcodec avformat swscale"
1992 scale_filter_deps="swscale"
1993 smartblur_filter_deps="gpl swscale"
1994 showspectrum_filter_deps="avcodec rdft"
1995 subtitles_filter_deps="avformat avcodec libass"
1996 super2xsai_filter_deps="gpl"
1997 tinterlace_filter_deps="gpl"
1998 yadif_filter_deps="gpl"
1999 pixfmts_super2xsai_test_deps="super2xsai_filter"
2000 tinterlace_merge_test_deps="tinterlace_filter"
2001 tinterlace_pad_test_deps="tinterlace_filter"
2002
2003 # libraries
2004 avcodec_deps="avutil"
2005 avdevice_deps="avutil avcodec avformat"
2006 avfilter_deps="avutil"
2007 avformat_deps="avutil avcodec"
2008 avresample_deps="avutil"
2009 postproc_deps="gpl"
2010 swscale_deps="avutil"
2011
2012 # programs
2013 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2014 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2015                setpts_filter null_filter anull_filter ffabuffersink_filter"
2016 ffplay_deps="avcodec avformat swscale swresample sdl"
2017 ffplay_select="ffbuffersink_filter rdft crop_filter"
2018 ffprobe_deps="avcodec avformat"
2019 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2020 ffserver_extralibs='$ldl'
2021
2022 # documentation
2023 podpages_deps="perl"
2024 manpages_deps="perl pod2man"
2025 htmlpages_deps="texi2html"
2026 txtpages_deps="makeinfo"
2027 doc_deps_any="manpages htmlpages podpages txtpages"
2028
2029 # default parameters
2030
2031 logfile="config.log"
2032
2033 # installation paths
2034 prefix_default="/usr/local"
2035 bindir_default='${prefix}/bin'
2036 datadir_default='${prefix}/share/ffmpeg'
2037 incdir_default='${prefix}/include'
2038 libdir_default='${prefix}/lib'
2039 mandir_default='${prefix}/share/man'
2040 shlibdir_default="$libdir_default"
2041 postproc_version_default="current"
2042
2043 # toolchain
2044 ar_default="ar"
2045 cc_default="gcc"
2046 cxx_default="g++"
2047 host_cc_default="gcc"
2048 cp_f="cp -f"
2049 install="install"
2050 ln_s="ln -sf"
2051 nm_default="nm -g"
2052 objformat="elf"
2053 pkg_config_default=pkg-config
2054 ranlib="ranlib"
2055 strip_default="strip"
2056 yasmexe_default="yasm"
2057
2058 nogas=":"
2059
2060 # machine
2061 arch_default=$(uname -m)
2062 cpu="generic"
2063
2064 # OS
2065 target_os_default=$(tolower $(uname -s))
2066 host_os=$target_os_default
2067
2068 # alternative libpostproc version
2069 ALT_PP_VER_MAJOR=51
2070 ALT_PP_VER_MINOR=2
2071 ALT_PP_VER_MICRO=101
2072 ALT_PP_VER=$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO
2073
2074 # configurable options
2075 enable $PROGRAM_LIST
2076 enable $DOCUMENT_LIST
2077 enable $(filter_out avresample $LIBRARY_LIST)
2078 enable postproc
2079 enable stripping
2080
2081 enable asm
2082 enable debug
2083 enable doc
2084 enable optimizations
2085 enable runtime_cpudetect
2086 enable safe_bitstream_reader
2087 enable static
2088 enable swscale_alpha
2089
2090 # build settings
2091 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2092 FFSERVERLDFLAGS=-Wl,-E
2093 LIBPREF="lib"
2094 LIBSUF=".a"
2095 FULLNAME='$(NAME)$(BUILDSUF)'
2096 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2097 SLIBPREF="lib"
2098 SLIBSUF=".so"
2099 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2100 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2101 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2102 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2103 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2104 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2105
2106 asflags_filter=echo
2107 cflags_filter=echo
2108 ldflags_filter=echo
2109
2110 AS_C='-c'
2111 AS_O='-o $@'
2112 CC_C='-c'
2113 CC_E='-E -o $@'
2114 CC_O='-o $@'
2115 CXX_C='-c'
2116 CXX_O='-o $@'
2117 LD_O='-o $@'
2118 LD_LIB='-l%'
2119 LD_PATH='-L'
2120 HOSTCC_C='-c'
2121 HOSTCC_O='-o $@'
2122 HOSTLD_O='-o $@'
2123
2124 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
2125 host_libs='-lm'
2126 host_cflags_filter=echo
2127 host_ldflags_filter=echo
2128
2129 target_path='$(CURDIR)'
2130
2131 # since the object filename is not given with the -MM flag, the compiler
2132 # is only able to print the basename, and we must add the path ourselves
2133 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2134 DEPFLAGS='-MM'
2135
2136 # find source path
2137 if test -f configure; then
2138     source_path=.
2139 else
2140     source_path=$(cd $(dirname "$0"); pwd)
2141     echo "$source_path" | grep -q '[[:blank:]]' &&
2142         die "Out of tree builds are impossible with whitespace in source path."
2143     test -e "$source_path/config.h" &&
2144         die "Out of tree builds are impossible with config.h in source dir."
2145 fi
2146
2147 for v in "$@"; do
2148     r=${v#*=}
2149     l=${v%"$r"}
2150     r=$(sh_quote "$r")
2151     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2152 done
2153
2154 find_things(){
2155     thing=$1
2156     pattern=$2
2157     file=$source_path/$3
2158     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2159 }
2160
2161 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2162 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2163 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2164 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2165 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2166 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2167 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2168 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2169 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2170 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2171 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2172
2173 ALL_COMPONENTS="
2174     $BSF_LIST
2175     $DECODER_LIST
2176     $DEMUXER_LIST
2177     $ENCODER_LIST
2178     $FILTER_LIST
2179     $HWACCEL_LIST
2180     $INDEV_LIST
2181     $MUXER_LIST
2182     $OUTDEV_LIST
2183     $PARSER_LIST
2184     $PROTOCOL_LIST
2185 "
2186
2187 for n in $COMPONENT_LIST; do
2188     v=$(toupper ${n%s})_LIST
2189     eval enable \$$v
2190     eval ${n}_if_any="\$$v"
2191 done
2192
2193 enable $ARCH_EXT_LIST
2194
2195 die_unknown(){
2196     echo "Unknown option \"$1\"."
2197     echo "See $0 --help for available options."
2198     exit 1
2199 }
2200
2201 show_list() {
2202     suffix=_$1
2203     shift
2204     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
2205     exit 0
2206 }
2207
2208 rand_list(){
2209     IFS=', '
2210     set -- $*
2211     unset IFS
2212     for thing; do
2213         comp=${thing%:*}
2214         prob=${thing#$comp}
2215         prob=${prob#:}
2216         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2217         echo "prob ${prob:-0.5}"
2218         printf '%s\n' $comp
2219     done
2220 }
2221
2222 do_random(){
2223     action=$1
2224     shift
2225     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2226     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2227 }
2228
2229 for opt do
2230     optval="${opt#*=}"
2231     case "$opt" in
2232         --extra-ldflags=*)
2233             add_ldflags $optval
2234         ;;
2235         --extra-libs=*)
2236             add_extralibs $optval
2237         ;;
2238         --disable-devices)
2239             disable $INDEV_LIST $OUTDEV_LIST
2240         ;;
2241         --enable-debug=*)
2242             debuglevel="$optval"
2243         ;;
2244         --disable-programs)
2245             disable $PROGRAM_LIST
2246         ;;
2247         --disable-everything)
2248             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2249         ;;
2250         --enable-random|--disable-random)
2251             action=${opt%%-random}
2252             do_random ${action#--} $COMPONENT_LIST
2253         ;;
2254         --enable-random=*|--disable-random=*)
2255             action=${opt%%-random=*}
2256             do_random ${action#--} $optval
2257         ;;
2258         --enable-*=*|--disable-*=*)
2259             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2260             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2261             eval list=\$$(toupper $thing)_LIST
2262             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2263             list=$(filter "$name" $list)
2264             [ "$list" = "" ] && warn "Option $opt did not match anything"
2265             $action $list
2266         ;;
2267         --enable-?*|--disable-?*)
2268             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2269             if is_in $option $COMPONENT_LIST; then
2270                 test $action = disable && action=unset
2271                 eval $action \$$(toupper ${option%s})_LIST
2272             elif is_in $option $CMDLINE_SELECT; then
2273                 $action $option
2274             else
2275                 die_unknown $opt
2276             fi
2277         ;;
2278         --list-*)
2279             NAME="${opt#--list-}"
2280             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2281             NAME=${NAME%s}
2282             eval show_list $NAME \$$(toupper $NAME)_LIST
2283         ;;
2284         --help|-h) show_help
2285         ;;
2286         --fatal-warnings) enable fatal_warnings
2287         ;;
2288         *)
2289             optname="${opt%%=*}"
2290             optname="${optname#--}"
2291             optname=$(echo "$optname" | sed 's/-/_/g')
2292             if is_in $optname $CMDLINE_SET; then
2293                 eval $optname='$optval'
2294             elif is_in $optname $CMDLINE_APPEND; then
2295                 append $optname "$optval"
2296             else
2297                 die_unknown $opt
2298             fi
2299         ;;
2300     esac
2301 done
2302
2303 disabled logging && logfile=/dev/null
2304
2305 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2306 set >> $logfile
2307
2308 test -n "$cross_prefix" && enable cross_compile
2309
2310 if enabled cross_compile; then
2311     test -n "$arch" && test -n "$target_os" ||
2312         die "Must specify target arch and OS when cross-compiling"
2313 fi
2314
2315 set_default postproc_version
2316
2317 # Check if we should build alternative libpostproc version instead of current
2318 if   test "$postproc_version" = $ALT_PP_VER; then
2319   LIBPOSTPROC_VERSION=$ALT_PP_VER
2320   LIBPOSTPROC_VERSION_MAJOR=$ALT_PP_VER_MAJOR
2321   LIBPOSTPROC_VERSION_MINOR=$ALT_PP_VER_MINOR
2322   LIBPOSTPROC_VERSION_MICRO=$ALT_PP_VER_MICRO
2323 elif test "$postproc_version" != current; then
2324   die "Invalid argument to --postproc-version. See --help output."
2325 fi
2326
2327 ar_default="${cross_prefix}${ar_default}"
2328 cc_default="${cross_prefix}${cc_default}"
2329 cxx_default="${cross_prefix}${cxx_default}"
2330 nm_default="${cross_prefix}${nm_default}"
2331 pkg_config_default="${cross_prefix}${pkg_config_default}"
2332 ranlib="${cross_prefix}${ranlib}"
2333 strip_default="${cross_prefix}${strip_default}"
2334
2335 sysinclude_default="${sysroot}/usr/include"
2336
2337 case "$toolchain" in
2338     clang-asan)
2339         cc_default="clang"
2340         add_cflags  -faddress-sanitizer
2341         add_ldflags -faddress-sanitizer
2342     ;;
2343     clang-tsan)
2344         cc_default="clang"
2345         add_cflags  -fthread-sanitizer
2346         add_ldflags -fthread-sanitizer
2347     ;;
2348     msvc)
2349         cc_default="c99wrap cl"
2350         ld_default="c99wrap link"
2351         nm_default="dumpbin -symbols"
2352         ar_default="lib"
2353         target_os_default="win32"
2354     ;;
2355     ?*)
2356         die "Unknown toolchain $toolchain"
2357     ;;
2358 esac
2359
2360 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2361 enabled cross_compile || host_cc_default=$cc
2362 set_default host_cc
2363
2364 if ! $pkg_config --version >/dev/null 2>&1; then
2365     warn "$pkg_config not found, library detection may fail."
2366     pkg_config=false
2367 fi
2368
2369 exesuf() {
2370     case $1 in
2371         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2372     esac
2373 }
2374
2375 EXESUF=$(exesuf $target_os)
2376 HOSTEXESUF=$(exesuf $host_os)
2377
2378 # set temporary file name
2379 : ${TMPDIR:=$TEMPDIR}
2380 : ${TMPDIR:=$TMP}
2381 : ${TMPDIR:=/tmp}
2382
2383 if ! check_cmd mktemp -u XXXXXX; then
2384     # simple replacement for missing mktemp
2385     # NOT SAFE FOR GENERAL USE
2386     mktemp(){
2387         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2388     }
2389 fi
2390
2391 tmpfile(){
2392     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2393         (set -C; exec > $tmp) 2>/dev/null ||
2394         die "Unable to create temporary file in $TMPDIR."
2395     append TMPFILES $tmp
2396     eval $1=$tmp
2397 }
2398
2399 trap 'rm -f -- $TMPFILES' EXIT
2400
2401 tmpfile TMPASM .asm
2402 tmpfile TMPC   .c
2403 tmpfile TMPCPP .cpp
2404 tmpfile TMPE   $EXESUF
2405 tmpfile TMPH   .h
2406 tmpfile TMPO   .o
2407 tmpfile TMPS   .S
2408 tmpfile TMPSH  .sh
2409 tmpfile TMPV   .ver
2410
2411 unset -f mktemp
2412
2413 chmod +x $TMPE
2414
2415 # make sure we can execute files in $TMPDIR
2416 cat > $TMPSH 2>> $logfile <<EOF
2417 #! /bin/sh
2418 EOF
2419 chmod +x $TMPSH >> $logfile 2>&1
2420 if ! $TMPSH >> $logfile 2>&1; then
2421     cat <<EOF
2422 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2423 variable to another directory and make sure that it is not mounted noexec.
2424 EOF
2425     die "Sanity test failed."
2426 fi
2427
2428 ccc_flags(){
2429     for flag; do
2430         case $flag in
2431             -std=c99)           echo -c99                       ;;
2432             -mcpu=*)            echo -arch ${flag#*=}           ;;
2433             -mieee)             echo -ieee                      ;;
2434             -O*|-fast)          echo $flag                      ;;
2435             -fno-math-errno)    echo -assume nomath_errno       ;;
2436             -g)                 echo -g3                        ;;
2437             -Wall)              echo -msg_enable level2         ;;
2438             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2439             -Wl,*)              echo $flag                      ;;
2440             -f*|-W*)                                            ;;
2441             *)                  echo $flag                      ;;
2442         esac
2443    done
2444 }
2445
2446 msvc_flags(){
2447     for flag; do
2448         case $flag in
2449             -fomit-frame-pointer) echo -Oy ;;
2450             -g)                   echo -Z7 ;;
2451             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2452                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2453                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2454                                        -wd4554 \
2455                                        -wd4996 -wd4273 ;;
2456             -std=c99)             ;;
2457             -fno-math-errno)      ;;
2458             -fno-common)          ;;
2459             -fno-signed-zeros)    ;;
2460             -lz)                  echo zlib.lib ;;
2461             -lavifil32)           echo vfw32.lib ;;
2462             -lavicap32)           echo vfw32.lib user32.lib ;;
2463             -l*)                  echo ${flag#-l}.lib ;;
2464             *)                    echo $flag ;;
2465         esac
2466     done
2467 }
2468
2469 pgi_flags(){
2470     for flag; do
2471         case $flag in
2472             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2473             -fomit-frame-pointer) echo -Mnoframe ;;
2474             -g)                   echo -gopt ;;
2475             *)                    echo $flag ;;
2476         esac
2477     done
2478 }
2479
2480 suncc_flags(){
2481     for flag; do
2482         case $flag in
2483             -march=*|-mcpu=*)
2484                 case "${flag#*=}" in
2485                     native)                   echo -xtarget=native       ;;
2486                     v9|niagara)               echo -xarch=sparc          ;;
2487                     ultrasparc)               echo -xarch=sparcvis       ;;
2488                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2489                     i586|pentium)             echo -xchip=pentium        ;;
2490                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2491                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2492                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2493                     pentium4*)          echo -xtarget=pentium4           ;;
2494                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2495                     *-sse3)             echo -xarch=sse3                 ;;
2496                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2497                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2498                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2499                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2500                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2501                     k8|opteron|athlon64|athlon-fx)
2502                                               echo -xarch=sse2a          ;;
2503                     athlon*)                  echo -xarch=pentium_proa   ;;
2504                 esac
2505                 ;;
2506             -std=c99)             echo -xc99              ;;
2507             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2508             -fPIC)                echo -KPIC -xcode=pic32 ;;
2509             -W*,*)                echo $flag              ;;
2510             -f*-*|-W*)                                    ;;
2511             *)                    echo $flag              ;;
2512         esac
2513     done
2514 }
2515
2516 tms470_flags(){
2517     for flag; do
2518         case $flag in
2519             -march=*|-mcpu=*)
2520                 case "${flag#*=}" in
2521                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2522                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2523                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2524                     armv6*|arm11*)          echo -mv=6   ;;
2525                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2526                                             echo -mv=5e  ;;
2527                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2528                 esac
2529                 ;;
2530             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2531             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2532             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2533             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2534             -msoft-float)   echo --float_support=vfplib       ;;
2535             -O[0-3]|-mf=*)  echo $flag                        ;;
2536             -g)             echo -g -mn                       ;;
2537             -pds=*)         echo $flag                        ;;
2538             -D*|-I*)        echo $flag                        ;;
2539             --gcc|--abi=*)  echo $flag                        ;;
2540             -me)            echo $flag                        ;;
2541         esac
2542     done
2543 }
2544
2545 probe_cc(){
2546     pfx=$1
2547     _cc=$2
2548
2549     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2550     unset _ld_o _ldflags _ld_lib _ld_path
2551     unset _depflags _DEPCMD _DEPFLAGS
2552     _flags_filter=echo
2553
2554     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2555         _type=llvm_gcc
2556         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2557         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2558         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2559         _cflags_speed='-O3'
2560         _cflags_size='-Os'
2561     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2562         _type=gcc
2563         gcc_version=$($_cc --version | head -n1)
2564         gcc_basever=$($_cc -dumpversion)
2565         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2566         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2567         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2568         if ! $_cc -dumpversion | grep -q '^2\.'; then
2569             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2570         fi
2571         _cflags_speed='-O3'
2572         _cflags_size='-Os'
2573     elif $_cc --version 2>/dev/null | grep -q Intel; then
2574         _type=icc
2575         _ident=$($_cc --version | head -n1)
2576         _depflags='-MMD'
2577         _cflags_speed='-O3'
2578         _cflags_size='-Os'
2579         _cflags_noopt='-O1'
2580     elif $_cc -v 2>&1 | grep -q xlc; then
2581         _type=xlc
2582         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2583         _cflags_speed='-O5'
2584         _cflags_size='-O5 -qcompact'
2585     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2586         _type=ccc
2587         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2588         _DEPFLAGS='-M'
2589         _cflags_speed='-fast'
2590         _cflags_size='-O1'
2591         _flags_filter=ccc_flags
2592     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2593         test -d "$sysroot" || die "No valid sysroot specified."
2594         _type=armcc
2595         _ident=$($_cc --vsn | head -n1)
2596         armcc_conf="$PWD/armcc.conf"
2597         $_cc --arm_linux_configure                 \
2598              --arm_linux_config_file="$armcc_conf" \
2599              --configure_sysroot="$sysroot"        \
2600              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2601              die "Error creating armcc configuration file."
2602         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2603         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2604         as_default="${cross_prefix}gcc"
2605         _depflags='-MMD'
2606         _cflags_speed='-O3'
2607         _cflags_size='-Os'
2608     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2609         _type=tms470
2610         _ident=$($_cc -version | head -n1 | tr -s ' ')
2611         _flags='--gcc --abi=eabi -me'
2612         _cc_e='-ppl -fe=$@'
2613         _cc_o='-fe=$@'
2614         _depflags='-ppa -ppd=$(@:.o=.d)'
2615         _cflags_speed='-O3 -mf=5'
2616         _cflags_size='-O3 -mf=2'
2617         _flags_filter=tms470_flags
2618     elif $_cc -v 2>&1 | grep -q clang; then
2619         _type=clang
2620         _ident=$($_cc --version | head -n1)
2621         _depflags='-MMD'
2622         _cflags_speed='-O3'
2623         _cflags_size='-Os'
2624     elif $_cc -V 2>&1 | grep -q Sun; then
2625         _type=suncc
2626         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2627         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2628         _DEPFLAGS='-xM1 -xc99'
2629         _ldflags='-std=c99'
2630         _cflags_speed='-O5'
2631         _cflags_size='-O5 -xspace'
2632         _flags_filter=suncc_flags
2633     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2634         _type=pathscale
2635         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2636         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2637         _cflags_speed='-O2'
2638         _cflags_size='-Os'
2639         _flags_filter='filter_out -Wdisabled-optimization'
2640     elif $_cc -v 2>&1 | grep -q Open64; then
2641         _type=open64
2642         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2643         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2644         _cflags_speed='-O2'
2645         _cflags_size='-Os'
2646         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2647     elif $_cc -V 2>&1 | grep -q Portland; then
2648         _type=pgi
2649         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2650         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2651         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2652         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2653         _cflags_noopt="-O1"
2654         _flags_filter=pgi_flags
2655     elif $_cc 2>&1 | grep -q Microsoft; then
2656         _type=msvc
2657         _ident=$($cc 2>&1 | head -n1)
2658         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2659         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2660         _cflags_speed="-O2"
2661         _cflags_size="-O1"
2662         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2663         if $_cc 2>&1 | grep -q Linker; then
2664             _ld_o='-out $@'
2665         else
2666             _ld_o='-Fe$@'
2667         fi
2668         _cc_o='-Fo $@'
2669         _cc_e='-P -Fi $@'
2670         _flags_filter=msvc_flags
2671         _ld_lib='lib%.a'
2672         _ld_path='-libpath:'
2673         _flags='-nologo'
2674         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2675         if [ $pfx = hostcc ]; then
2676             append _cflags -Dsnprintf=_snprintf
2677         fi
2678         disable stripping
2679     fi
2680
2681     eval ${pfx}_type=\$_type
2682     eval ${pfx}_ident=\$_ident
2683 }
2684
2685 set_ccvars(){
2686     eval ${1}_C=\${_cc_c-\${${1}_C}}
2687     eval ${1}_E=\${_cc_e-\${${1}_E}}
2688     eval ${1}_O=\${_cc_o-\${${1}_O}}
2689
2690     if [ -n "$_depflags" ]; then
2691         eval ${1}_DEPFLAGS=\$_depflags
2692     else
2693         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2694         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2695         eval DEP${1}FLAGS=\$_flags
2696     fi
2697 }
2698
2699 probe_cc cc "$cc"
2700 cflags_filter=$_flags_filter
2701 cflags_speed=$_cflags_speed
2702 cflags_size=$_cflags_size
2703 cflags_noopt=$_cflags_noopt
2704 add_cflags $_flags $_cflags
2705 cc_ldflags=$_ldflags
2706 set_ccvars CC
2707
2708 probe_cc hostcc "$host_cc"
2709 host_cflags_filter=$_flags_filter
2710 add_host_cflags  $_flags $_cflags
2711 set_ccvars HOSTCC
2712
2713 test -n "$cc_type" && enable $cc_type ||
2714     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2715
2716 : ${as_default:=$cc}
2717 : ${dep_cc_default:=$cc}
2718 : ${ld_default:=$cc}
2719 : ${host_ld_default:=$host_cc}
2720 set_default ar as dep_cc ld host_ld
2721
2722 probe_cc as "$as"
2723 asflags_filter=$_flags_filter
2724 add_asflags $_flags $_cflags
2725 set_ccvars AS
2726
2727 probe_cc ld "$ld"
2728 ldflags_filter=$_flags_filter
2729 add_ldflags $_flags $_ldflags
2730 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2731 LD_O=${_ld_o-$LD_O}
2732 LD_LIB=${_ld_lib-$LD_LIB}
2733 LD_PATH=${_ld_path-$LD_PATH}
2734
2735 probe_cc hostld "$host_ld"
2736 host_ldflags_filter=$_flags_filter
2737 add_host_ldflags $_flags $_ldflags
2738 HOSTLD_O=${_ld_o-$HOSTLD_O}
2739
2740 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2741     probe_cc depcc "$dep_cc"
2742     CCDEP=${_DEPCMD:-$DEPCMD}
2743     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2744     DEPCCFLAGS=$_flags
2745 fi
2746
2747 if $ar 2>&1 | grep -q Microsoft; then
2748     arflags="-nologo"
2749     ar_o='-out:$@'
2750 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2751     arflags="rq"
2752     ar_o='$@'
2753 else
2754     arflags="rc"
2755     ar_o='$@'
2756 fi
2757
2758 add_cflags $extra_cflags
2759 add_cxxflags $extra_cxxflags
2760 add_asflags $extra_cflags
2761
2762 if test -n "$sysroot"; then
2763     case "$cc_type" in
2764         gcc|llvm_gcc|clang)
2765             add_cppflags --sysroot="$sysroot"
2766             add_ldflags --sysroot="$sysroot"
2767         ;;
2768         tms470)
2769             add_cppflags -I"$sysinclude"
2770             add_ldflags  --sysroot="$sysroot"
2771         ;;
2772     esac
2773 fi
2774
2775 if test "$cpu" = host; then
2776     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2777
2778     case "$cc_type" in
2779         gcc|llvm_gcc)
2780             check_native(){
2781                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2782                 sed -n "/cc1.*$1=/{
2783                             s/.*$1=\\([^ ]*\\).*/\\1/
2784                             p
2785                             q
2786                         }" $TMPE
2787             }
2788             cpu=$(check_native -march || check_native -mcpu)
2789         ;;
2790     esac
2791
2792     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2793 fi
2794
2795 # Deal with common $arch aliases
2796 case "$arch" in
2797     aarch64|arm64)
2798         arch="aarch64"
2799     ;;
2800     arm*|iPad*)
2801         arch="arm"
2802     ;;
2803     mips*|IP*)
2804         arch="mips"
2805     ;;
2806     parisc*|hppa*)
2807         arch="parisc"
2808     ;;
2809     "Power Macintosh"|ppc*|powerpc*)
2810         arch="ppc"
2811     ;;
2812     s390|s390x)
2813         arch="s390"
2814     ;;
2815     sh4|sh)
2816         arch="sh4"
2817     ;;
2818     sun4u|sparc*)
2819         arch="sparc"
2820     ;;
2821     tilegx|tile-gx)
2822         arch="tilegx"
2823     ;;
2824     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2825         arch="x86"
2826     ;;
2827 esac
2828
2829 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2830 enable $arch
2831
2832 # Add processor-specific flags
2833 if enabled aarch64; then
2834
2835     case $cpu in
2836         armv*)
2837             cpuflags="-march=$cpu"
2838         ;;
2839         *)
2840             cpuflags="-mcpu=$cpu"
2841         ;;
2842     esac
2843
2844 elif enabled alpha; then
2845
2846     cpuflags="-mcpu=$cpu"
2847
2848 elif enabled arm; then
2849
2850     check_arm_arch() {
2851         check_cpp_condition stddef.h \
2852             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2853             $cpuflags
2854     }
2855
2856     probe_arm_arch() {
2857         if   check_arm_arch 4;        then echo armv4;
2858         elif check_arm_arch 4T;       then echo armv4t;
2859         elif check_arm_arch 5;        then echo armv5;
2860         elif check_arm_arch 5E;       then echo armv5e;
2861         elif check_arm_arch 5T;       then echo armv5t;
2862         elif check_arm_arch 5TE;      then echo armv5te;
2863         elif check_arm_arch 5TEJ;     then echo armv5te;
2864         elif check_arm_arch 6;        then echo armv6;
2865         elif check_arm_arch 6J;       then echo armv6j;
2866         elif check_arm_arch 6K;       then echo armv6k;
2867         elif check_arm_arch 6Z;       then echo armv6z;
2868         elif check_arm_arch 6ZK;      then echo armv6zk;
2869         elif check_arm_arch 6T2;      then echo armv6t2;
2870         elif check_arm_arch 7;        then echo armv7;
2871         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2872         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2873         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2874         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2875         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2876         fi
2877     }
2878
2879     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2880
2881     case $cpu in
2882         armv*)
2883             cpuflags="-march=$cpu"
2884             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2885         ;;
2886         *)
2887             cpuflags="-mcpu=$cpu"
2888             case $cpu in
2889                 cortex-a*)                               subarch=armv7a  ;;
2890                 cortex-r*)                               subarch=armv7r  ;;
2891                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2892                 arm11*)                                  subarch=armv6   ;;
2893                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2894                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2895                 *)                             subarch=$(probe_arm_arch) ;;
2896             esac
2897         ;;
2898     esac
2899
2900     case "$subarch" in
2901         armv5t*)    enable fast_clz                ;;
2902         armv[6-8]*) enable fast_clz fast_unaligned ;;
2903     esac
2904
2905 elif enabled avr32; then
2906
2907     case $cpu in
2908         ap7[02]0[0-2])
2909             subarch="avr32_ap"
2910             cpuflags="-mpart=$cpu"
2911         ;;
2912         ap)
2913             subarch="avr32_ap"
2914             cpuflags="-march=$cpu"
2915         ;;
2916         uc3[ab]*)
2917             subarch="avr32_uc"
2918             cpuflags="-mcpu=$cpu"
2919         ;;
2920         uc)
2921             subarch="avr32_uc"
2922             cpuflags="-march=$cpu"
2923         ;;
2924     esac
2925
2926 elif enabled bfin; then
2927
2928     cpuflags="-mcpu=$cpu"
2929
2930 elif enabled mips; then
2931
2932     cpuflags="-march=$cpu"
2933
2934     case $cpu in
2935         24kc)
2936             disable mipsfpu
2937             disable mipsdspr1
2938             disable mipsdspr2
2939         ;;
2940         24kf*)
2941             disable mipsdspr1
2942             disable mipsdspr2
2943         ;;
2944         24kec|34kc|1004kc)
2945             disable mipsfpu
2946             disable mipsdspr2
2947         ;;
2948         24kef*|34kf*|1004kf*)
2949             disable mipsdspr2
2950         ;;
2951         74kc)
2952             disable mipsfpu
2953         ;;
2954     esac
2955
2956 elif enabled ppc; then
2957
2958     case $(tolower $cpu) in
2959         601|ppc601|powerpc601)
2960             cpuflags="-mcpu=601"
2961             disable altivec
2962         ;;
2963         603*|ppc603*|powerpc603*)
2964             cpuflags="-mcpu=603"
2965             disable altivec
2966         ;;
2967         604*|ppc604*|powerpc604*)
2968             cpuflags="-mcpu=604"
2969             disable altivec
2970         ;;
2971         g3|75*|ppc75*|powerpc75*)
2972             cpuflags="-mcpu=750"
2973             disable altivec
2974         ;;
2975         g4|745*|ppc745*|powerpc745*)
2976             cpuflags="-mcpu=7450"
2977         ;;
2978         74*|ppc74*|powerpc74*)
2979             cpuflags="-mcpu=7400"
2980         ;;
2981         g5|970|ppc970|powerpc970)
2982             cpuflags="-mcpu=970"
2983         ;;
2984         power[3-7]*)
2985             cpuflags="-mcpu=$cpu"
2986         ;;
2987         cell)
2988             cpuflags="-mcpu=cell"
2989             enable ldbrx
2990         ;;
2991         e500mc)
2992             cpuflags="-mcpu=e500mc"
2993             disable altivec
2994         ;;
2995         e500v2)
2996             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2997             disable altivec
2998         ;;
2999         e500)
3000             cpuflags="-mcpu=8540 -mhard-float"
3001             disable altivec
3002         ;;
3003     esac
3004
3005 elif enabled sparc; then
3006
3007     case $cpu in
3008         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3009             cpuflags="-mcpu=$cpu"
3010             disable vis
3011         ;;
3012         ultrasparc*|niagara[234])
3013             cpuflags="-mcpu=$cpu"
3014         ;;
3015     esac
3016
3017 elif enabled x86; then
3018
3019     case $cpu in
3020         i[345]86|pentium)
3021             cpuflags="-march=$cpu"
3022             disable mmx
3023         ;;
3024         # targets that do NOT support conditional mov (cmov)
3025         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3026             cpuflags="-march=$cpu"
3027             disable cmov
3028         ;;
3029         # targets that do support conditional mov (cmov)
3030         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3031             cpuflags="-march=$cpu"
3032             enable cmov
3033             enable fast_cmov
3034         ;;
3035         # targets that do support conditional mov but on which it's slow
3036         pentium4|pentium4m|prescott|nocona)
3037             cpuflags="-march=$cpu"
3038             enable cmov
3039             disable fast_cmov
3040         ;;
3041     esac
3042
3043 fi
3044
3045 if [ "$cpu" != generic ]; then
3046     add_cflags  $cpuflags
3047     add_asflags $cpuflags
3048 fi
3049
3050 # compiler sanity check
3051 check_exec <<EOF
3052 int main(void){ return 0; }
3053 EOF
3054 if test "$?" != 0; then
3055     echo "$cc is unable to create an executable file."
3056     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3057         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3058         echo "Only do this if you know what cross compiling means."
3059     fi
3060     die "C compiler test failed."
3061 fi
3062
3063 add_cppflags -D_ISOC99_SOURCE
3064 add_cxxflags -D__STDC_CONSTANT_MACROS
3065 check_cflags -std=c99
3066 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3067 #include <stdlib.h>
3068 EOF
3069 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3070 #include <stdlib.h>
3071 EOF
3072
3073 check_host_cflags -std=c99
3074 check_host_cflags -Wall
3075
3076 check_64bit(){
3077     arch32=$1
3078     arch64=$2
3079     expr=$3
3080     check_code cc "" "int test[2*($expr) - 1]" &&
3081         subarch=$arch64 || subarch=$arch32
3082 }
3083
3084 case "$arch" in
3085     alpha|ia64)
3086         spic=$shared
3087     ;;
3088     mips)
3089         check_64bit mips mips64 '_MIPS_SIM > 1'
3090         spic=$shared
3091     ;;
3092     parisc)
3093         check_64bit parisc parisc64 'sizeof(void *) > 4'
3094         spic=$shared
3095     ;;
3096     ppc)
3097         check_64bit ppc ppc64 'sizeof(void *) > 4'
3098         spic=$shared
3099     ;;
3100     sparc)
3101         check_64bit sparc sparc64 'sizeof(void *) > 4'
3102         spic=$shared
3103     ;;
3104     x86)
3105         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3106         if test "$subarch" = "x86_64"; then
3107             spic=$shared
3108         fi
3109     ;;
3110     ppc)
3111         check_cc <<EOF && subarch="ppc64"
3112         int test[(int)sizeof(char*) - 7];
3113 EOF
3114     ;;
3115 esac
3116
3117 enable $subarch
3118 enabled spic && enable pic
3119
3120 # OS specific
3121 case $target_os in
3122     haiku)
3123         prefix_default="/boot/common"
3124         network_extralibs="-lnetwork"
3125         host_libs=
3126         ;;
3127     sunos)
3128         FFSERVERLDFLAGS=""
3129         SHFLAGS='-shared -Wl,-h,$$(@F)'
3130         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3131         network_extralibs="-lsocket -lnsl"
3132         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3133         # When using suncc to build, the Solaris linker will mark
3134         # an executable with each instruction set encountered by
3135         # the Solaris assembler.  As our libraries contain their own
3136         # guards for processor-specific code, instead suppress
3137         # generation of the HWCAPS ELF section on Solaris x86 only.
3138         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3139         nm_default='nm -P -g'
3140         ;;
3141     netbsd)
3142         disable symver
3143         oss_indev_extralibs="-lossaudio"
3144         oss_outdev_extralibs="-lossaudio"
3145         enabled gcc || check_ldflags -Wl,-zmuldefs
3146         ;;
3147     openbsd|bitrig)
3148         # On OpenBSD 4.5. the compiler does not use PIC unless
3149         # explicitly using -fPIC. FFmpeg builds fine without PIC,
3150         # however the generated executable will not do anything
3151         # (simply quits with exit-code 1, no crash, no output).
3152         # Thus explicitly enable PIC here.
3153         enable pic
3154         disable symver
3155         SHFLAGS='-shared'
3156         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
3157         SLIB_INSTALL_LINKS=
3158         oss_indev_extralibs="-lossaudio"
3159         oss_outdev_extralibs="-lossaudio"
3160         ;;
3161     dragonfly)
3162         disable symver
3163         ;;
3164     freebsd)
3165         ;;
3166     bsd/os)
3167         add_extralibs -lpoll -lgnugetopt
3168         strip="strip -d"
3169         ;;
3170     darwin)
3171         gas="gas-preprocessor.pl $cc"
3172         enabled ppc && add_asflags -force_cpusubtype_ALL
3173         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3174         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3175         strip="${strip} -x"
3176         add_ldflags -Wl,-dynamic,-search_paths_first
3177         SLIBSUF=".dylib"
3178         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3179         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3180         FFSERVERLDFLAGS=-Wl,-bind_at_load
3181         objformat="macho"
3182         enabled x86_64 && objformat="macho64"
3183         enabled_any pic shared ||
3184             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3185         ;;
3186     mingw32*)
3187         if test $target_os = "mingw32ce"; then
3188             disable network
3189         else
3190             target_os=mingw32
3191         fi
3192         LIBTARGET=i386
3193         if enabled x86_64; then
3194             LIBTARGET="i386:x86-64"
3195         elif enabled arm; then
3196             LIBTARGET=arm-wince
3197         fi
3198         shlibdir_default="$bindir_default"
3199         SLIBPREF=""
3200         SLIBSUF=".dll"
3201         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3202         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3203         dlltool="${cross_prefix}dlltool"
3204         if check_cmd lib.exe -list; then
3205             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3206             if enabled x86_64; then
3207                 LIBTARGET=x64
3208             fi
3209         elif check_cmd $dlltool --version; then
3210             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3211         fi
3212         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3213         SLIB_INSTALL_LINKS=
3214         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3215         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3216         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3217         objformat="win32"
3218         ranlib=:
3219         enable dos_paths
3220         add_cppflags -U__STRICT_ANSI__
3221         ;;
3222     win32|win64)
3223         if enabled shared; then
3224             # Link to the import library instead of the normal static library
3225             # for shared libs.
3226             LD_LIB='%.lib'
3227             # Cannot build shared and static libraries at the same time with
3228             # MSVC.
3229             disable static
3230         fi
3231         shlibdir_default="$bindir_default"
3232         SLIBPREF=""
3233         SLIBSUF=".dll"
3234         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3235         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3236         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3237         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3238         SLIB_INSTALL_LINKS=
3239         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3240         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3241         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3242         objformat="win32"
3243         ranlib=:
3244         enable dos_paths
3245         ;;
3246     cygwin*)
3247         target_os=cygwin
3248         shlibdir_default="$bindir_default"
3249         SLIBPREF="cyg"
3250         SLIBSUF=".dll"
3251         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3252         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3253         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3254         SLIB_INSTALL_LINKS=
3255         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3256         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3257         objformat="win32"
3258         enable dos_paths
3259         ;;
3260     *-dos|freedos|opendos)
3261         network_extralibs="-lsocket"
3262         objformat="coff"
3263         enable dos_paths
3264         add_cppflags -U__STRICT_ANSI__
3265         ;;
3266     linux)
3267         enable dv1394
3268         ;;
3269     irix*)
3270         target_os=irix
3271         ranlib="echo ignoring ranlib"
3272         ;;
3273     os/2*)
3274         strip="lxlite -CS"
3275         ln_s="cp -f"
3276         objformat="aout"
3277         add_cppflags -D_GNU_SOURCE
3278         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3279         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3280         FFSERVERLDFLAGS=""
3281         LIBSUF="_s.a"
3282         SLIBPREF=""
3283         SLIBSUF=".dll"
3284         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3285         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3286         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3287             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3288             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3289             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3290             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3291             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3292         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3293             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3294         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3295         enable dos_paths
3296         enable_weak os2threads
3297         ;;
3298     gnu/kfreebsd)
3299         add_cppflags -D_BSD_SOURCE
3300         ;;
3301     gnu)
3302         ;;
3303     qnx)
3304         add_cppflags -D_QNX_SOURCE
3305         network_extralibs="-lsocket"
3306         ;;
3307     symbian)
3308         SLIBSUF=".dll"
3309         enable dos_paths
3310         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3311         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3312         add_ldflags -Wl,--target1-abs,--no-undefined \
3313                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3314                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3315         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3316                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3317                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3318         ;;
3319     osf1)
3320         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3321         FFSERVERLDFLAGS=
3322         ;;
3323     minix)
3324         ;;
3325     plan9)
3326         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3327                      -D_REENTRANT_SOURCE        \
3328                      -D_RESEARCH_SOURCE         \
3329                      -DFD_SETSIZE=96            \
3330                      -DHAVE_SOCK_OPTS
3331         add_compat strtod.o strtod=avpriv_strtod
3332         network_extralibs='-lbsd'
3333         exeobjs=compat/plan9/main.o
3334         disable ffserver
3335         ln_s='ln -s -f'
3336         cp_f='cp'
3337         ;;
3338     none)
3339         ;;
3340     *)
3341         die "Unknown OS '$target_os'."
3342         ;;
3343 esac
3344
3345 # determine libc flavour
3346
3347 if check_cpp_condition features.h "defined __UCLIBC__"; then
3348     libc_type=uclibc
3349     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3350 elif check_cpp_condition features.h "defined __GLIBC__"; then
3351     libc_type=glibc
3352     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3353 elif check_header _mingw.h; then
3354     libc_type=mingw
3355     check_cpp_condition _mingw.h \
3356         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3357             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3358         die "ERROR: MinGW runtime version must be >= 3.15."
3359     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3360             __MINGW64_VERSION_MAJOR < 3"; then
3361         add_compat msvcrt/snprintf.o
3362         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3363     fi
3364 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3365     libc_type=newlib
3366     add_cppflags -U__STRICT_ANSI__
3367 elif check_func_headers stdlib.h _get_doserrno; then
3368     libc_type=msvcrt
3369     add_compat strtod.o strtod=avpriv_strtod
3370     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3371                                  _snprintf=avpriv_snprintf  \
3372                                  vsnprintf=avpriv_vsnprintf
3373 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3374     libc_type=klibc
3375 fi
3376
3377 test -n "$libc_type" && enable $libc_type
3378
3379 # hacks for compiler/libc/os combinations
3380
3381 if enabled_all tms470 glibc; then
3382     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3383     add_cppflags -D__USER_LABEL_PREFIX__=
3384     add_cppflags -D__builtin_memset=memset
3385     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3386     add_cflags   -pds=48    # incompatible redefinition of macro
3387 fi
3388
3389 if enabled_all ccc glibc; then
3390     add_ldflags -Wl,-z,now  # calls to libots crash without this
3391 fi
3392
3393 esc(){
3394     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3395 }
3396
3397 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3398
3399 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3400
3401 set_default $PATHS_LIST
3402 set_default nm
3403
3404 # we need to build at least one lib type
3405 if ! enabled_any static shared; then
3406     cat <<EOF
3407 At least one library type must be built.
3408 Specify --enable-static to build the static libraries or --enable-shared to
3409 build the shared libraries as well. To only build the shared libraries specify
3410 --disable-static in addition to --enable-shared.
3411 EOF
3412     exit 1;
3413 fi
3414
3415 die_license_disabled() {
3416     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3417 }
3418
3419 die_license_disabled_gpl() {
3420     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3421 }
3422
3423 die_license_disabled gpl libcdio
3424 die_license_disabled gpl libutvideo
3425 die_license_disabled gpl libx264
3426 die_license_disabled gpl libxavs
3427 die_license_disabled gpl libxvid
3428 die_license_disabled gpl x11grab
3429
3430 die_license_disabled nonfree libaacplus
3431 die_license_disabled nonfree libfaac
3432 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3433 enabled gpl && die_license_disabled_gpl nonfree openssl
3434
3435 die_license_disabled version3 libopencore_amrnb
3436 die_license_disabled version3 libopencore_amrwb
3437 die_license_disabled version3 libvo_aacenc
3438 die_license_disabled version3 libvo_amrwbenc
3439
3440 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3441
3442 disabled optimizations || check_cflags -fomit-frame-pointer
3443
3444 enable_pic() {
3445     enable pic
3446     add_cppflags -DPIC
3447     add_cflags   -fPIC
3448     add_asflags  -fPIC
3449 }
3450
3451 enabled pic && enable_pic
3452
3453 check_cc <<EOF || die "Symbol mangling check failed."
3454 int ff_extern;
3455 EOF
3456 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3457 extern_prefix=${sym%%ff_extern*}
3458
3459 check_cc <<EOF && enable_weak inline_asm
3460 void foo(void) { __asm__ volatile ("" ::); }
3461 EOF
3462
3463 _restrict=
3464 for restrict_keyword in restrict __restrict__ __restrict; do
3465     check_cc <<EOF && _restrict=$restrict_keyword && break
3466 void foo(char * $restrict_keyword p);
3467 EOF
3468 done
3469
3470 check_cc <<EOF && enable attribute_packed
3471 struct { int x; } __attribute__((packed)) x;
3472 EOF
3473
3474 check_cc <<EOF && enable attribute_may_alias
3475 union { int x; } __attribute__((may_alias)) x;
3476 EOF
3477
3478 check_cc <<EOF || die "endian test failed"
3479 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3480 EOF
3481 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3482
3483 if enabled alpha; then
3484
3485     check_cflags -mieee
3486
3487 elif enabled arm; then
3488
3489     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3490 float func(float a, float b){ return a+b; }
3491 EOF
3492
3493     enabled thumb && check_cflags -mthumb || check_cflags -marm
3494     nogas=die
3495
3496     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3497         enable vfp_args
3498     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3499         case "${cross_prefix:-$cc}" in
3500             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3501             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3502 __asm__ (".eabi_attribute 28, 1");
3503 int main(void) { return 0; }
3504 EOF
3505         esac
3506         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3507     fi
3508
3509     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3510     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3511     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3512     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3513     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3514     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3515
3516     [ $target_os = linux ] ||
3517         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3518             $ARCH_EXT_LIST_ARM
3519
3520     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3521     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3522
3523     enabled_all armv6t2 shared !pic && enable_pic
3524
3525 elif enabled mips; then
3526
3527     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3528     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3529      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3530     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3531      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3532     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3533      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3534     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3535      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3536
3537 elif enabled parisc; then
3538
3539     if enabled gcc; then
3540         case $($cc -dumpversion) in
3541             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3542         esac
3543     fi
3544
3545 elif enabled ppc; then
3546
3547     enable local_aligned_8 local_aligned_16
3548
3549     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3550     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3551     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3552     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3553
3554     # AltiVec flags: The FSF version of GCC differs from the Apple version
3555     if enabled altivec; then
3556         nogas=warn
3557         check_cflags -maltivec -mabi=altivec &&
3558         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3559         check_cflags -faltivec
3560
3561         # check if our compiler supports Motorola AltiVec C API
3562         check_cc <<EOF || disable altivec
3563 $inc_altivec_h
3564 int main(void) {
3565     vector signed int v1 = (vector signed int) { 0 };
3566     vector signed int v2 = (vector signed int) { 1 };
3567     v1 = vec_add(v1, v2);
3568     return 0;
3569 }
3570 EOF
3571
3572         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3573     fi
3574
3575 elif enabled sparc; then
3576
3577     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3578
3579 elif enabled x86; then
3580
3581     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3582
3583     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3584
3585     enable local_aligned_8 local_aligned_16
3586
3587     # check whether EBP is available on x86
3588     # As 'i' is stored on the stack, this program will crash
3589     # if the base pointer is used to access it because the
3590     # base pointer is cleared in the inline assembly code.
3591     check_exec_crash <<EOF && enable ebp_available
3592 volatile int i=0;
3593 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3594 return i;
3595 EOF
3596
3597     # check whether EBX is available on x86
3598     check_inline_asm ebx_available '""::"b"(0)' &&
3599         check_inline_asm ebx_available '"":::"%ebx"'
3600
3601     # check whether xmm clobbers are supported
3602     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3603
3604     # check whether binutils is new enough to compile SSSE3/MMXEXT
3605     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3606     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3607
3608     if ! disabled_any asm mmx yasm; then
3609         if check_cmd $yasmexe --version; then
3610             enabled x86_64 && yasm_extra="-m amd64"
3611             yasm_debug="-g dwarf2"
3612         elif check_cmd nasm -v; then
3613             yasmexe=nasm
3614             yasm_debug="-g -F dwarf"
3615             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3616         fi
3617
3618         YASMFLAGS="-f $objformat $yasm_extra"
3619         enabled pic               && append YASMFLAGS "-DPIC"
3620         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3621         case "$objformat" in
3622             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3623         esac
3624
3625         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3626             die "yasm not found, use --disable-yasm for a crippled build"
3627         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3628         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3629         check_yasm "CPU amdnop" && enable cpunop
3630     fi
3631
3632     case "$cpu" in
3633         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3634             disable fast_clz
3635         ;;
3636     esac
3637
3638 fi
3639
3640 if enabled asm; then
3641     as=${gas:=$as}
3642     check_as <<EOF && enable gnu_as || \
3643         $nogas "GNU assembler not found, install gas-preprocessor"
3644 .macro m n
3645 \n: .int 0
3646 .endm
3647 m x
3648 EOF
3649 fi
3650
3651 check_ldflags -Wl,--as-needed
3652
3653 if check_func dlopen; then
3654     ldl=
3655 elif check_func dlopen -ldl; then
3656     ldl=-ldl
3657 fi
3658
3659 if ! disabled network; then
3660     check_type "sys/types.h sys/socket.h" socklen_t
3661     check_type netdb.h "struct addrinfo"
3662     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3663     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3664     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3665     check_type netinet/in.h "struct sockaddr_in6"
3666     check_type poll.h "struct pollfd"
3667     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3668     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3669     check_type netinet/sctp.h "struct sctp_event_subscribe"
3670     check_func getaddrinfo $network_extralibs
3671     check_func getservbyport $network_extralibs
3672     # Prefer arpa/inet.h over winsock2
3673     if check_header arpa/inet.h ; then
3674         check_func closesocket
3675     elif check_header winsock2.h ; then
3676         check_func_headers winsock2.h closesocket -lws2 &&
3677             network_extralibs="-lws2" ||
3678         { check_func_headers winsock2.h closesocket -lws2_32 &&
3679             network_extralibs="-lws2_32"; }
3680         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3681         check_type ws2tcpip.h socklen_t
3682         check_type ws2tcpip.h "struct addrinfo"
3683         check_type ws2tcpip.h "struct group_source_req"
3684         check_type ws2tcpip.h "struct ip_mreq_source"
3685         check_type ws2tcpip.h "struct ipv6_mreq"
3686         check_type winsock2.h "struct pollfd"
3687         check_type ws2tcpip.h "struct sockaddr_in6"
3688         check_type ws2tcpip.h "struct sockaddr_storage"
3689         check_struct winsock2.h "struct sockaddr" sa_len
3690     else
3691         disable network
3692     fi
3693 fi
3694
3695 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3696 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3697
3698 check_func  access
3699 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3700 check_func  fcntl
3701 check_func  fork
3702 check_func  gethrtime
3703 check_func  getopt
3704 check_func  getrusage
3705 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3706 check_func  gettimeofday
3707 check_func  inet_aton $network_extralibs
3708 check_func  isatty
3709 check_func  localtime_r
3710 check_func  ${malloc_prefix}memalign            && enable memalign
3711 check_func  mkstemp
3712 check_func  mmap
3713 check_func  mprotect
3714 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3715 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3716 check_func  setrlimit
3717 check_func  strerror_r
3718 check_func  sched_getaffinity
3719 check_func  sysconf
3720 check_func  sysctl
3721 check_func  usleep
3722 check_func_headers conio.h kbhit
3723 check_func_headers windows.h PeekNamedPipe
3724 check_func_headers io.h setmode
3725 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3726 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3727 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3728 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3729 check_func_headers windows.h GetProcessAffinityMask
3730 check_func_headers windows.h GetProcessTimes
3731 check_func_headers windows.h GetSystemTimeAsFileTime
3732 check_func_headers windows.h MapViewOfFile
3733 check_func_headers windows.h SetConsoleTextAttribute
3734 check_func_headers windows.h Sleep
3735 check_func_headers windows.h VirtualAlloc
3736 check_func_headers glob.h glob
3737
3738 check_header direct.h
3739 check_header dlfcn.h
3740 check_header dxva.h
3741 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3742 check_header io.h
3743 check_header libcrystalhd/libcrystalhd_if.h
3744 check_header malloc.h
3745 check_header poll.h
3746 check_header sys/mman.h
3747 check_header sys/param.h
3748 check_header sys/resource.h
3749 check_header sys/select.h
3750 check_header sys/time.h
3751 check_header termios.h
3752 check_header unistd.h
3753 check_header vdpau/vdpau.h
3754 check_header vdpau/vdpau_x11.h
3755 check_header windows.h
3756 check_header X11/extensions/XvMClib.h
3757 check_header asm/types.h
3758
3759 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3760 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3761
3762 # check for VDA header
3763 if ! disabled vda && ! enabled ppc; then
3764     if check_header VideoDecodeAcceleration/VDADecoder.h; then
3765         enable vda
3766         add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3767     fi
3768 fi
3769
3770 if ! disabled w32threads && ! enabled pthreads; then
3771     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3772 fi
3773
3774 # check for some common methods of building with pthread support
3775 # do this before the optional library checks as some of them require pthreads
3776 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3777     enable pthreads
3778     if check_func pthread_create; then
3779         :
3780     elif check_func pthread_create -pthread; then
3781         add_cflags -pthread
3782         add_extralibs -pthread
3783     elif check_func pthread_create -pthreads; then
3784         add_cflags -pthreads
3785         add_extralibs -pthreads
3786     elif check_func pthread_create -lpthreadGC2; then
3787         add_extralibs -lpthreadGC2
3788     elif ! check_lib pthread.h pthread_create -lpthread; then
3789         disable pthreads
3790     fi
3791 fi
3792
3793 for thread in $THREADS_LIST; do
3794     if enabled $thread; then
3795         test -n "$thread_type" &&
3796             die "ERROR: Only one thread type must be selected." ||
3797             thread_type="$thread"
3798     fi
3799 done
3800
3801 if enabled pthreads; then
3802   check_func pthread_cancel
3803 fi
3804
3805 check_lib math.h sin -lm && LIBM="-lm"
3806 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3807 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3808
3809 atan2f_args=2
3810 ldexpf_args=2
3811 powf_args=2
3812
3813 for func in $MATH_FUNCS; do
3814     eval check_mathfunc $func \${${func}_args:-1}
3815 done
3816
3817 # these are off by default, so fail if requested and not available
3818 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3819 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3820 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3821 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3822 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3823 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3824 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3825 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3826 enabled libcdio    && require2 libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3827 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3828                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3829                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3830 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3831 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3832 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3833 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"
3834 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3835 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3836 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
3837 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3838 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3839 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3840 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3841 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3842 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3843 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3844 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3845 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3846 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3847 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3848 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3849 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3850 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3851 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3852     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3853     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3854 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3855 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3856                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3857                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3858 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3859 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3860 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3861 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3862 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3863 enabled libvpx     && {
3864     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3865                                 die "ERROR: libvpx decoder must be installed and version must be >=0.9.1"; }
3866     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
3867                                 die "ERROR: libvpx encoder version must be >=0.9.7"; } }
3868 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3869                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3870                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3871 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3872 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3873 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3874                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3875                         die "ERROR: openal not found"; } &&
3876                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3877                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3878 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3879                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3880                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3881                         die "ERROR: openssl not found"; }
3882
3883 if enabled gnutls; then
3884     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3885     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3886 fi
3887
3888 # libdc1394 check
3889 if enabled libdc1394; then
3890     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3891         enable libdc1394_2; } ||
3892     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3893         enable libdc1394_1; } ||
3894     die "ERROR: No version of libdc1394 found "
3895 fi
3896
3897 SDL_CONFIG="${cross_prefix}sdl-config"
3898 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3899     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3900     enable sdl &&
3901     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3902 else
3903   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3904     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3905     sdl_libs=$("${SDL_CONFIG}" --libs)
3906     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3907     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3908     enable sdl &&
3909     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3910   fi
3911 fi
3912 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3913
3914 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3915 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3916 perl --version > /dev/null 2>&1 && enable perl || disable perl
3917 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3918 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
3919
3920 check_header linux/fb.h
3921 check_header linux/videodev.h
3922 check_header linux/videodev2.h
3923 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3924
3925 check_header sys/videoio.h
3926
3927 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3928 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3929 # w32api 3.12 had it defined wrong
3930 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3931
3932 check_type "dshow.h" IBaseFilter
3933
3934 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3935 { check_header dev/bktr/ioctl_meteor.h &&
3936   check_header dev/bktr/ioctl_bt848.h; } ||
3937 { check_header machine/ioctl_meteor.h &&
3938   check_header machine/ioctl_bt848.h; } ||
3939 { check_header dev/video/meteor/ioctl_meteor.h &&
3940   check_header dev/video/bktr/ioctl_bt848.h; } ||
3941 check_header dev/ic/bt8xx.h
3942
3943 check_header sndio.h
3944 if check_struct sys/soundcard.h audio_buf_info bytes; then
3945     enable_safe sys/soundcard.h
3946 else
3947     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3948     #include <sys/soundcard.h>
3949     audio_buf_info abc;
3950 EOF
3951 fi
3952 check_header soundcard.h
3953
3954 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3955
3956 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3957     check_func jack_port_get_latency_range -ljack
3958
3959 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3960
3961
3962 enabled x11grab                                           &&
3963 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3964 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3965 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3966
3967 if ! disabled vaapi; then
3968     check_lib va/va.h vaInitialize -lva && {
3969         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3970         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3971     } || disable vaapi
3972 fi
3973
3974 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3975     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3976         { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." && disable vdpau; }
3977 fi
3978
3979 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3980 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
3981 test -n "$valgrind" && target_exec="$valgrind --error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3982
3983 # add some useful compiler flags if supported
3984 check_cflags -Wdeclaration-after-statement
3985 check_cflags -Wall
3986 check_cflags -Wno-parentheses
3987 check_cflags -Wno-switch
3988 check_cflags -Wno-format-zero-length
3989 check_cflags -Wdisabled-optimization
3990 check_cflags -Wpointer-arith
3991 check_cflags -Wredundant-decls
3992 check_cflags -Wno-pointer-sign
3993 check_cflags -Wwrite-strings
3994 check_cflags -Wtype-limits
3995 check_cflags -Wundef
3996 check_cflags -Wmissing-prototypes
3997 check_cflags -Wno-pointer-to-int-cast
3998 check_cflags -Wstrict-prototypes
3999 enabled extra_warnings && check_cflags -Winline
4000
4001 # add some linker flags
4002 check_ldflags -Wl,--warn-common
4003 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4004 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4005
4006 enabled xmm_clobber_test &&
4007     check_ldflags -Wl,--wrap,avcodec_open2              \
4008                   -Wl,--wrap,avcodec_decode_audio4      \
4009                   -Wl,--wrap,avcodec_decode_video2      \
4010                   -Wl,--wrap,avcodec_decode_subtitle2   \
4011                   -Wl,--wrap,avcodec_encode_audio2      \
4012                   -Wl,--wrap,avcodec_encode_video       \
4013                   -Wl,--wrap,avcodec_encode_subtitle    \
4014                   -Wl,--wrap,sws_scale ||
4015     disable xmm_clobber_test
4016
4017 echo "X{};" > $TMPV
4018 if test_ldflags -Wl,--version-script,$TMPV; then
4019     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4020     check_cc <<EOF && enable symver_asm_label
4021 void ff_foo(void) __asm__ ("av_foo@VERSION");
4022 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4023 EOF
4024     check_cc <<EOF && enable symver_gnu_asm
4025 __asm__(".symver ff_foo,av_foo@VERSION");
4026 void ff_foo(void) {}
4027 EOF
4028 fi
4029
4030 if [ -z "$optflags" ]; then
4031     if enabled small; then
4032         optflags=$cflags_size
4033     elif enabled optimizations; then
4034         optflags=$cflags_speed
4035     else
4036         optflags=$cflags_noopt
4037     fi
4038 fi
4039
4040 check_optflags(){
4041     check_cflags "$@"
4042     enabled lto && check_ldflags "$@"
4043 }
4044
4045
4046 if enabled lto; then
4047     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4048     check_cflags  -flto
4049     check_ldflags -flto $cpuflags
4050 fi
4051
4052 check_optflags $optflags
4053 check_optflags -fno-math-errno
4054 check_optflags -fno-signed-zeros
4055
4056 enabled ftrapv && check_cflags -ftrapv
4057
4058 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4059 int x;
4060 EOF
4061
4062
4063 if enabled icc; then
4064     # Just warnings, no remarks
4065     check_cflags -w1
4066     # -wd: Disable following warnings
4067     # 144, 167, 556: -Wno-pointer-sign
4068     # 1292: attribute "foo" ignored
4069     # 1419: external declaration in primary source file
4070     # 10006: ignoring unknown option -fno-signed-zeros
4071     # 10148: ignoring unknown option -Wno-parentheses
4072     # 10156: ignoring option '-W'; no argument required
4073     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4074     # 11030: Warning unknown option --as-needed
4075     # 10156: ignoring option '-export'; no argument required
4076     check_ldflags -wd10156,11030
4077     # Allow to compile with optimizations
4078     check_ldflags -march=$cpu
4079     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4080     enable ebp_available
4081     if enabled x86_32; then
4082         icc_version=$($cc -dumpversion)
4083         test ${icc_version%%.*} -ge 11 &&
4084             check_cflags -falign-stack=maintain-16-byte ||
4085             disable aligned_stack
4086     fi
4087 elif enabled ccc; then
4088     # disable some annoying warnings
4089     add_cflags -msg_disable bitnotint
4090     add_cflags -msg_disable mixfuncvoid
4091     add_cflags -msg_disable nonstandcast
4092     add_cflags -msg_disable unsupieee
4093 elif enabled gcc; then
4094     check_optflags -fno-tree-vectorize
4095     check_cflags -Werror=implicit-function-declaration
4096     check_cflags -Werror=missing-prototypes
4097     check_cflags -Werror=vla
4098 elif enabled llvm_gcc; then
4099     check_cflags -mllvm -stack-alignment=16
4100 elif enabled clang; then
4101     check_cflags -mllvm -stack-alignment=16
4102     check_cflags -Qunused-arguments
4103     check_cflags -Werror=implicit-function-declaration
4104     check_cflags -Werror=missing-prototypes
4105 elif enabled armcc; then
4106     # 2523: use of inline assembler is deprecated
4107     add_cflags -W${armcc_opt},--diag_suppress=2523
4108     add_cflags -W${armcc_opt},--diag_suppress=1207
4109     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4110     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4111     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4112     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4113 elif enabled tms470; then
4114     add_cflags -pds=824 -pds=837
4115 elif enabled pathscale; then
4116     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4117 elif enabled msvc; then
4118     enabled x86_32 && disable aligned_stack
4119 fi
4120
4121 case $target_os in
4122     osf1)
4123         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4124     ;;
4125     plan9)
4126         add_cppflags -Dmain=plan9_main
4127     ;;
4128 esac
4129
4130 enabled_any $THREADS_LIST      && enable threads
4131
4132 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4133
4134 check_deps $CONFIG_LIST       \
4135            $CONFIG_EXTRA      \
4136            $HAVE_LIST         \
4137            $ALL_COMPONENTS    \
4138
4139
4140 if test $target_os = "haiku"; then
4141     disable memalign
4142     disable posix_memalign
4143 fi
4144
4145 ! enabled_any memalign posix_memalign aligned_malloc &&
4146     enabled_any $need_memalign && enable memalign_hack
4147
4148 # add_dep lib dep
4149 # -> enable ${lib}_deps_${dep}
4150 # -> add $dep to ${lib}_deps only once
4151 add_dep() {
4152     lib=$1
4153     dep=$2
4154     enabled "${lib}_deps_${dep}" && return 0
4155     enable  "${lib}_deps_${dep}"
4156     prepend "${lib}_deps" $dep
4157 }
4158
4159 # merge deps lib components
4160 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4161 merge_deps() {
4162     lib=$1
4163     shift
4164     for comp in $*; do
4165         enabled $comp || continue
4166         eval "dep=\"\$${comp}_deps\""
4167         for d in $dep; do
4168             add_dep $lib $d
4169         done
4170     done
4171 }
4172
4173 merge_deps libavfilter $FILTER_LIST
4174
4175 echo "install prefix            $prefix"
4176 echo "source path               $source_path"
4177 echo "C compiler                $cc"
4178 echo "ARCH                      $arch ($cpu)"
4179 if test "$build_suffix" != ""; then
4180     echo "build suffix              $build_suffix"
4181 fi
4182 if test "$progs_suffix" != ""; then
4183     echo "progs suffix              $progs_suffix"
4184 fi
4185 if test "$extra_version" != ""; then
4186     echo "version string suffix     $extra_version"
4187 fi
4188 echo "big-endian                ${bigendian-no}"
4189 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4190 if enabled x86; then
4191     echo "${yasmexe}                      ${yasm-no}"
4192     echo "MMX enabled               ${mmx-no}"
4193     echo "MMXEXT enabled            ${mmxext-no}"
4194     echo "3DNow! enabled            ${amd3dnow-no}"
4195     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4196     echo "SSE enabled               ${sse-no}"
4197     echo "SSSE3 enabled             ${ssse3-no}"
4198     echo "AVX enabled               ${avx-no}"
4199     echo "FMA4 enabled              ${fma4-no}"
4200     echo "CMOV enabled              ${cmov-no}"
4201     echo "CMOV is fast              ${fast_cmov-no}"
4202     echo "EBX available             ${ebx_available-no}"
4203     echo "EBP available             ${ebp_available-no}"
4204 fi
4205 if enabled arm; then
4206     echo "ARMv5TE enabled           ${armv5te-no}"
4207     echo "ARMv6 enabled             ${armv6-no}"
4208     echo "ARMv6T2 enabled           ${armv6t2-no}"
4209     echo "VFP enabled               ${vfp-no}"
4210     echo "NEON enabled              ${neon-no}"
4211     echo "THUMB enabled             ${thumb-no}"
4212 fi
4213 if enabled mips; then
4214     echo "MIPS FPU enabled          ${mipsfpu-no}"
4215     echo "MIPS32R2 enabled          ${mips32r2-no}"
4216     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4217     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4218 fi
4219 if enabled ppc; then
4220     echo "AltiVec enabled           ${altivec-no}"
4221     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4222     echo "dcbzl available           ${dcbzl-no}"
4223 fi
4224 if enabled sparc; then
4225     echo "VIS enabled               ${vis-no}"
4226 fi
4227 echo "debug symbols             ${debug-no}"
4228 echo "strip symbols             ${stripping-no}"
4229 echo "optimize for size         ${small-no}"
4230 echo "optimizations             ${optimizations-no}"
4231 echo "static                    ${static-no}"
4232 echo "shared                    ${shared-no}"
4233 echo "postprocessing support    ${postproc-no}"
4234 echo "new filter support        ${avfilter-no}"
4235 echo "network support           ${network-no}"
4236 echo "threading support         ${thread_type-no}"
4237 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4238 echo "SDL support               ${sdl-no}"
4239 echo "libdxva2 enabled          ${dxva2-no}"
4240 echo "libva enabled             ${vaapi-no}"
4241 echo "libvdpau enabled          ${vdpau-no}"
4242 echo "AVISynth enabled          ${avisynth-no}"
4243 echo "frei0r enabled            ${frei0r-no}"
4244 echo "gnutls enabled            ${gnutls-no}"
4245 echo "libaacplus enabled        ${libaacplus-no}"
4246 echo "libass enabled            ${libass-no}"
4247 echo "libcaca enabled           ${libcaca-no}"
4248 echo "libcdio support           ${libcdio-no}"
4249 echo "libcelt enabled           ${libcelt-no}"
4250 echo "libdc1394 support         ${libdc1394-no}"
4251 echo "libfaac enabled           ${libfaac-no}"
4252 echo "libfdk-aac enabled        ${libfdk_aac-no}"
4253 echo "libgsm enabled            ${libgsm-no}"
4254 echo "libiec61883 support       ${libiec61883-no}"
4255 echo "libilbc enabled           ${libilbc-no}"
4256 echo "libmodplug enabled        ${libmodplug-no}"
4257 echo "libmp3lame enabled        ${libmp3lame-no}"
4258 echo "libnut enabled            ${libnut-no}"
4259 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
4260 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
4261 echo "libopencv support         ${libopencv-no}"
4262 echo "libopenjpeg enabled       ${libopenjpeg-no}"
4263 echo "libopus enabled           ${libopus-no}"
4264 echo "libpulse enabled          ${libpulse-no}"
4265 echo "librtmp enabled           ${librtmp-no}"
4266 echo "libschroedinger enabled   ${libschroedinger-no}"
4267 echo "libsoxr enabled           ${libsoxr-no}"
4268 echo "libspeex enabled          ${libspeex-no}"
4269 echo "libstagefright-h264 enabled    ${libstagefright_h264-no}"
4270 echo "libtheora enabled         ${libtheora-no}"
4271 echo "libtwolame enabled        ${libtwolame-no}"
4272 echo "libutvideo enabled        ${libutvideo-no}"
4273 echo "libv4l2 enabled           ${libv4l2-no}"
4274 echo "libvo-aacenc support      ${libvo_aacenc-no}"
4275 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
4276 echo "libvorbis enabled         ${libvorbis-no}"
4277 echo "libvpx enabled            ${libvpx-no}"
4278 echo "libx264 enabled           ${libx264-no}"
4279 echo "libxavs enabled           ${libxavs-no}"
4280 echo "libxvid enabled           ${libxvid-no}"
4281 echo "openal enabled            ${openal-no}"
4282 echo "openssl enabled           ${openssl-no}"
4283 echo "zlib enabled              ${zlib-no}"
4284 echo "bzlib enabled             ${bzlib-no}"
4285 echo "texi2html enabled         ${texi2html-no}"
4286 echo "perl enabled              ${perl-no}"
4287 echo "pod2man enabled           ${pod2man-no}"
4288 echo "makeinfo enabled          ${makeinfo-no}"
4289 test -n "$random_seed" &&
4290     echo "random seed               ${random_seed}"
4291 echo
4292
4293 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4294     echo "Enabled ${type}s:"
4295     eval list=\$$(toupper $type)_LIST
4296     print_enabled '_*' $list | sort | pr -r -3 -t
4297     echo
4298 done
4299
4300 license="LGPL version 2.1 or later"
4301 if enabled nonfree; then
4302     license="nonfree and unredistributable"
4303 elif enabled gplv3; then
4304     license="GPL version 3 or later"
4305 elif enabled lgplv3; then
4306     license="LGPL version 3 or later"
4307 elif enabled gpl; then
4308     license="GPL version 2 or later"
4309 fi
4310
4311 echo "License: $license"
4312
4313 echo "Creating config.mak and config.h..."
4314
4315 test -e Makefile || $ln_s "$source_path/Makefile" .
4316
4317 enabled stripping || strip="echo skipping strip"
4318
4319 config_files="$TMPH config.mak"
4320
4321 cat > config.mak <<EOF
4322 # Automatically generated by configure - do not modify!
4323 ifndef FFMPEG_CONFIG_MAK
4324 FFMPEG_CONFIG_MAK=1
4325 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4326 prefix=$prefix
4327 LIBDIR=\$(DESTDIR)$libdir
4328 SHLIBDIR=\$(DESTDIR)$shlibdir
4329 INCDIR=\$(DESTDIR)$incdir
4330 BINDIR=\$(DESTDIR)$bindir
4331 DATADIR=\$(DESTDIR)$datadir
4332 MANDIR=\$(DESTDIR)$mandir
4333 SRC_PATH=$source_path
4334 ifndef MAIN_MAKEFILE
4335 SRC_PATH:=\$(SRC_PATH:.%=..%)
4336 endif
4337 CC_IDENT=$cc_ident
4338 ARCH=$arch
4339 CC=$cc
4340 CXX=$cxx
4341 AS=$as
4342 LD=$ld
4343 DEPCC=$dep_cc
4344 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4345 DEPAS=$as
4346 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4347 YASM=$yasmexe
4348 DEPYASM=$yasmexe
4349 AR=$ar
4350 ARFLAGS=$arflags
4351 AR_O=$ar_o
4352 RANLIB=$ranlib
4353 CP=cp -p
4354 LN_S=$ln_s
4355 STRIP=$strip
4356 CPPFLAGS=$CPPFLAGS
4357 CFLAGS=$CFLAGS
4358 CXXFLAGS=$CXXFLAGS
4359 ASFLAGS=$ASFLAGS
4360 AS_C=$AS_C
4361 AS_O=$AS_O
4362 CC_C=$CC_C
4363 CC_E=$CC_E
4364 CC_O=$CC_O
4365 CXX_C=$CXX_C
4366 CXX_O=$CXX_O
4367 LD_O=$LD_O
4368 LD_LIB=$LD_LIB
4369 LD_PATH=$LD_PATH
4370 DLLTOOL=$dlltool
4371 LDFLAGS=$LDFLAGS
4372 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4373 SHFLAGS=$SHFLAGS
4374 YASMFLAGS=$YASMFLAGS
4375 BUILDSUF=$build_suffix
4376 PROGSSUF=$progs_suffix
4377 FULLNAME=$FULLNAME
4378 LIBPREF=$LIBPREF
4379 LIBSUF=$LIBSUF
4380 LIBNAME=$LIBNAME
4381 SLIBPREF=$SLIBPREF
4382 SLIBSUF=$SLIBSUF
4383 EXESUF=$EXESUF
4384 EXTRA_VERSION=$extra_version
4385 CCDEP=$CCDEP
4386 CXXDEP=$CXXDEP
4387 CCDEP_FLAGS=$CCDEP_FLAGS
4388 ASDEP=$ASDEP
4389 ASDEP_FLAGS=$ASDEP_FLAGS
4390 CC_DEPFLAGS=$CC_DEPFLAGS
4391 AS_DEPFLAGS=$AS_DEPFLAGS
4392 HOSTCC=$host_cc
4393 HOSTLD=$host_ld
4394 HOSTCFLAGS=$host_cflags
4395 HOSTEXESUF=$HOSTEXESUF
4396 HOSTLDFLAGS=$host_ldflags
4397 HOSTLIBS=$host_libs
4398 DEPHOSTCC=$host_cc
4399 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4400 HOSTCCDEP=$HOSTCCDEP
4401 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4402 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4403 HOSTCC_C=$HOSTCC_C
4404 HOSTCC_O=$HOSTCC_O
4405 HOSTLD_O=$HOSTLD_O
4406 TARGET_EXEC=$target_exec
4407 TARGET_PATH=$target_path
4408 LIBS-ffplay=$sdl_libs
4409 CFLAGS-ffplay=$sdl_cflags
4410 ZLIB=$($ldflags_filter -lz)
4411 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4412 EXTRALIBS=$extralibs
4413 COMPAT_OBJS=$compat_objs
4414 EXEOBJS=$exeobjs
4415 INSTALL=$install
4416 LIBTARGET=${LIBTARGET}
4417 SLIBNAME=${SLIBNAME}
4418 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4419 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4420 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4421 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4422 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4423 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4424 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4425 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4426 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4427 NOREDZONE_FLAGS=$noredzone_flags
4428 EOF
4429
4430 get_version(){
4431     lcname=lib${1}
4432     name=$(toupper $lcname)
4433     file=$source_path/$lcname/version.h
4434     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4435     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4436     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4437     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4438 }
4439
4440 get_version_old(){
4441     name=$1
4442     file=$source_path/$2
4443 # This condition will be removed when we stop supporting old libpostproc versions
4444 if ! test "$name" = LIBPOSTPROC || test "$postproc_version" = current; then
4445     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
4446     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4447 fi
4448     lcname=$(tolower $name)
4449     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4450     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4451 }
4452
4453 get_version_old LIBPOSTPROC libpostproc/version.h
4454
4455 map 'get_version $v' $LIBRARY_LIST
4456
4457 cat > $TMPH <<EOF
4458 /* Automatically generated by configure - do not modify! */
4459 #ifndef FFMPEG_CONFIG_H
4460 #define FFMPEG_CONFIG_H
4461 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4462 #define FFMPEG_LICENSE "$(c_escape $license)"
4463 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4464 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4465 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4466 #define av_restrict $_restrict
4467 #define EXTERN_PREFIX "${extern_prefix}"
4468 #define EXTERN_ASM ${extern_prefix}
4469 #define SLIBSUF "$SLIBSUF"
4470 #define HAVE_MMX2 HAVE_MMXEXT
4471 EOF
4472
4473 test -n "$assert_level" &&
4474     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4475
4476 test -n "$malloc_prefix" &&
4477     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4478
4479 if enabled yasm; then
4480     append config_files $TMPASM
4481     printf '' >$TMPASM
4482 fi
4483
4484 print_config ARCH_   "$config_files" $ARCH_LIST
4485 print_config HAVE_   "$config_files" $HAVE_LIST
4486 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4487                                      $CONFIG_EXTRA      \
4488                                      $ALL_COMPONENTS    \
4489
4490 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4491 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4492
4493 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4494 cp_if_changed $TMPH config.h
4495 touch .config
4496
4497 enabled yasm && cp_if_changed $TMPASM config.asm
4498
4499 cat > $TMPH <<EOF
4500 /* Generated by ffconf */
4501 #ifndef AVUTIL_AVCONFIG_H
4502 #define AVUTIL_AVCONFIG_H
4503 EOF
4504
4505 test "$postproc_version" != current && cat >> $TMPH <<EOF
4506 #define LIBPOSTPROC_VERSION_MAJOR $LIBPOSTPROC_VERSION_MAJOR
4507 #define LIBPOSTPROC_VERSION_MINOR $LIBPOSTPROC_VERSION_MINOR
4508 #define LIBPOSTPROC_VERSION_MICRO $LIBPOSTPROC_VERSION_MICRO
4509 EOF
4510
4511 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4512
4513 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4514
4515 cp_if_changed $TMPH libavutil/avconfig.h
4516
4517 if test -n "$WARNINGS"; then
4518     printf "\n$WARNINGS"
4519     enabled fatal_warnings && exit 1
4520 fi
4521
4522 # build pkg-config files
4523
4524 pkgconfig_generate(){
4525     name=$1
4526     shortname=${name#lib}${build_suffix}
4527     comment=$2
4528     version=$3
4529     libs=$4
4530     requires=$5
4531     enabled ${name#lib} || return 0
4532     mkdir -p $name
4533     cat <<EOF > $name/$name.pc
4534 prefix=$prefix
4535 exec_prefix=\${prefix}
4536 libdir=$libdir
4537 includedir=$incdir
4538
4539 Name: $name
4540 Description: $comment
4541 Version: $version
4542 Requires: $(enabled shared || echo $requires)
4543 Requires.private: $(enabled shared && echo $requires)
4544 Conflicts:
4545 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4546 Libs.private: $(enabled shared && echo $libs)
4547 Cflags: -I\${includedir}
4548 EOF
4549
4550 mkdir -p doc/examples/pc-uninstalled
4551 includedir=${source_path}
4552 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4553     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4554 prefix=
4555 exec_prefix=
4556 libdir=\${pcfiledir}/../../../$name
4557 includedir=${includedir}
4558
4559 Name: $name
4560 Description: $comment
4561 Version: $version
4562 Requires: $requires
4563 Conflicts:
4564 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4565 Cflags: -I\${includedir}
4566 EOF
4567 }
4568
4569 libavfilter_pc_deps="libavutil = $LIBAVUTIL_VERSION"
4570 enabled libavfilter_deps_avcodec    && prepend libavfilter_pc_deps "libavcodec = $LIBAVCODEC_VERSION,"
4571 enabled libavfilter_deps_avformat   && prepend libavfilter_pc_deps "libavformat = $LIBAVFORMAT_VERSION,"
4572 enabled libavfilter_deps_avresample && prepend libavfilter_pc_deps "libavresample = $LIBAVRESAMPLE_VERSION,"
4573 enabled libavfilter_deps_swscale    && prepend libavfilter_pc_deps "libswscale = $LIBSWSCALE_VERSION,"
4574 enabled libavfilter_deps_swresample && prepend libavfilter_pc_deps "libswresample = $LIBSWRESAMPLE_VERSION,"
4575 enabled libavfilter_deps_postproc   && prepend libavfilter_pc_deps "libpostproc = $LIBPOSTPROC_VERSION,"
4576 libavfilter_pc_deps=${libavfilter_pc_deps%, }
4577
4578 libavdevice_pc_deps="libavformat = $LIBAVFORMAT_VERSION"
4579 enabled lavfi_indev && prepend libavdevice_pc_deps "libavfilter = $LIBAVFILTER_VERSION,"
4580
4581 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4582 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4583 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4584 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$libavdevice_pc_deps"
4585 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$libavfilter_pc_deps"
4586 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
4587 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4588 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4589 pkgconfig_generate libswresample "FFmpeg audio resampling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4590
4591 fix_ffmpeg_remote(){
4592     git_remote_from=$1
4593     git_remote_to=$2
4594     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4595     if [ "$fixme_remote" != "" ]; then
4596         echolog "
4597 Outdated domain in git config, the official domain for ffmpeg git is since
4598 November 2011, source.ffmpeg.org, both the old and the new point to the same
4599 repository and server. To update it enter the following commands:
4600 "
4601         for remote in $fixme_remote; do
4602             echolog "git remote set-url $remote $git_remote_to"
4603         done
4604     fi
4605 }
4606
4607 if test -f "$source_path/.git/config"; then
4608     remote_from=git.videolan.org
4609     remote_to=source.ffmpeg.org
4610     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4611     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4612 fi