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   --disable-all            disable building components, libraries and programs
 105
 106 Program options:
 107   --disable-programs       do not build command line programs
 108   --disable-ffmpeg         disable ffmpeg build
 109   --disable-ffplay         disable ffplay build
 110   --disable-ffprobe        disable ffprobe build
 111   --disable-ffserver       disable ffserver build
 112
 113 Documentation options:
 114   --disable-doc            do not build documentation
 115   --disable-htmlpages      do not build HTML documentation pages
 116   --disable-manpages       do not build man documentation pages
 117   --disable-podpages       do not build POD documentation pages
 118   --disable-txtpages       do not build text documentation pages
 119
 120 Component options:
 121   --disable-avdevice       disable libavdevice build
 122   --disable-avcodec        disable libavcodec build
 123   --disable-avformat       disable libavformat build
 124   --disable-avutil         disable libavutil build
 125   --disable-swresample     disable libswresample build
 126   --disable-swscale        disable libswscale build
 127   --disable-postproc       disable libpostproc build
 128   --disable-avfilter       disable libavfilter build
 129   --enable-avresample      enable libavresample build [no]
 130   --disable-pthreads       disable pthreads [auto]
 131   --disable-w32threads     disable Win32 threads [auto]
 132   --disable-os2threads     disable OS/2 threads [auto]
 133   --enable-x11grab         enable X11 grabbing [no]
 134   --disable-network        disable network support [no]
 135   --disable-dct            disable DCT code
 136   --disable-dwt            disable DWT code
 137   --disable-lsp            disable LSP code
 138   --disable-lzo            disable LZO decoder code
 139   --disable-mdct           disable MDCT code
 140   --disable-rdft           disable RDFT code
 141   --disable-fft            disable FFT code
 142   --enable-dxva2           enable DXVA2 code
 143   --enable-vaapi           enable VAAPI code [autodetect]
 144   --enable-vda             enable VDA code   [autodetect]
 145   --enable-vdpau           enable VDPAU code [autodetect]
 146
 147 Individual component options:
 148   --disable-everything     disable all components listed below
 149   --disable-encoder=NAME   disable encoder NAME
 150   --enable-encoder=NAME    enable encoder NAME
 151   --disable-encoders       disable all encoders
 152   --disable-decoder=NAME   disable decoder NAME
 153   --enable-decoder=NAME    enable decoder NAME
 154   --disable-decoders       disable all decoders
 155   --disable-hwaccel=NAME   disable hwaccel NAME
 156   --enable-hwaccel=NAME    enable hwaccel NAME
 157   --disable-hwaccels       disable all hwaccels
 158   --disable-muxer=NAME     disable muxer NAME
 159   --enable-muxer=NAME      enable muxer NAME
 160   --disable-muxers         disable all muxers
 161   --disable-demuxer=NAME   disable demuxer NAME
 162   --enable-demuxer=NAME    enable demuxer NAME
 163   --disable-demuxers       disable all demuxers
 164   --enable-parser=NAME     enable parser NAME
 165   --disable-parser=NAME    disable parser NAME
 166   --disable-parsers        disable all parsers
 167   --enable-bsf=NAME        enable bitstream filter NAME
 168   --disable-bsf=NAME       disable bitstream filter NAME
 169   --disable-bsfs           disable all bitstream filters
 170   --enable-protocol=NAME   enable protocol NAME
 171   --disable-protocol=NAME  disable protocol NAME
 172   --disable-protocols      disable all protocols
 173   --enable-indev=NAME      enable input device NAME
 174   --disable-indev=NAME     disable input device NAME
 175   --disable-indevs         disable input devices
 176   --enable-outdev=NAME     enable output device NAME
 177   --disable-outdev=NAME    disable output device NAME
 178   --disable-outdevs        disable output devices
 179   --disable-devices        disable all devices
 180   --enable-filter=NAME     enable filter NAME
 181   --disable-filter=NAME    disable filter NAME
 182   --disable-filters        disable all filters
 183
 184 External library support:
 185   --enable-avisynth        enable reading of AVISynth script files [no]
 186   --enable-bzlib           enable bzlib [autodetect]
 187   --enable-fontconfig      enable fontconfig
 188   --enable-frei0r          enable frei0r video filtering
 189   --enable-gnutls          enable gnutls [no]
 190   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 191   --enable-libass          enable libass subtitles rendering [no]
 192   --enable-libbluray       enable BluRay reading using libbluray [no]
 193   --enable-libcaca         enable textual display using libcaca
 194   --enable-libcelt         enable CELT decoding via libcelt [no]
 195   --enable-libcdio         enable audio CD grabbing with libcdio
 196   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 197                            and libraw1394 [no]
 198   --enable-libfaac         enable AAC encoding via libfaac [no]
 199   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 200   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 201   --enable-libfreetype     enable libfreetype [no]
 202   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 203   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 204   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 205   --enable-libmodplug      enable ModPlug via libmodplug [no]
 206   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 207   --enable-libnut          enable NUT (de)muxing via libnut,
 208                            native (de)muxer exists [no]
 209   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 210   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 211   --enable-libopencv       enable video filtering via libopencv [no]
 212   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 213   --enable-libopus         enable Opus decoding via libopus [no]
 214   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 215   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 216   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 217   --enable-libsoxr         enable Include libsoxr resampling [no]
 218   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 219   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 220   --enable-libtheora       enable Theora encoding via libtheora [no]
 221   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 222   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 223   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 224   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 225   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 226   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 227                            native implementation exists [no]
 228   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 229   --enable-libx264         enable H.264 encoding via x264 [no]
 230   --enable-libxavs         enable AVS encoding via xavs [no]
 231   --enable-libxvid         enable Xvid encoding via xvidcore,
 232                            native MPEG-4/Xvid encoder exists [no]
 233   --enable-openal          enable OpenAL 1.1 capture support [no]
 234   --enable-openssl         enable openssl [no]
 235   --enable-zlib            enable zlib [autodetect]
 236
 237 Advanced options (experts only):
 238   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 239   --enable-cross-compile   assume a cross-compiler is used
 240   --sysroot=PATH           root of cross-build tree
 241   --sysinclude=PATH        location of cross-build system headers
 242   --target-os=OS           compiler targets OS [$target_os]
 243   --target-exec=CMD        command to run executables on target
 244   --target-path=DIR        path to view of build directory on target
 245   --toolchain=NAME         set tool defaults according to NAME
 246   --nm=NM                  use nm tool NM [$nm_default]
 247   --ar=AR                  use archive tool AR [$ar_default]
 248   --as=AS                  use assembler AS [$as_default]
 249   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 250   --cc=CC                  use C compiler CC [$cc_default]
 251   --cxx=CXX                use C compiler CXX [$cxx_default]
 252   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 253   --ld=LD                  use linker LD [$ld_default]
 254   --host-cc=HOSTCC         use host C compiler HOSTCC
 255   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 256   --host-ld=HOSTLD         use host linker HOSTLD
 257   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 258   --host-libs=HLIBS        use libs HLIBS when linking for host
 259   --host-os=OS             compiler host OS [$target_os]
 260   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 261   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 262   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 263   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 264   --extra-version=STRING   version string suffix []
 265   --optflags=OPTFLAGS      override optimization-related compiler flags
 266   --build-suffix=SUFFIX    library name suffix []
 267   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 268   --progs-suffix=SUFFIX    program name suffix []
 269   --arch=ARCH              select architecture [$arch]
 270   --cpu=CPU                select the minimum required CPU (affects
 271                            instruction selection, may crash on older CPUs)
 272   --enable-pic             build position-independent code
 273   --enable-sram            allow use of on-chip SRAM
 274   --enable-thumb           compile for Thumb instruction set
 275   --disable-symver         disable symbol versioning
 276   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 277   --disable-safe-bitstream-reader
 278                            disable buffer boundary checking in bitreaders
 279                            (faster, but may crash)
 280   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 281   --enable-lto             use link-time optimization
 282
 283 Optimization options (experts only):
 284   --disable-asm            disable all assembler optimizations
 285   --disable-altivec        disable AltiVec optimizations
 286   --disable-amd3dnow       disable 3DNow! optimizations
 287   --disable-amd3dnowext    disable 3DNow! extended optimizations
 288   --disable-mmx            disable MMX optimizations
 289   --disable-mmxext         disable MMXEXT optimizations
 290   --disable-sse            disable SSE optimizations
 291   --disable-sse2           disable SSE2 optimizations
 292   --disable-sse3           disable SSE3 optimizations
 293   --disable-ssse3          disable SSSE3 optimizations
 294   --disable-sse4           disable SSE4 optimizations
 295   --disable-sse42          disable SSE4.2 optimizations
 296   --disable-avx            disable AVX optimizations
 297   --disable-fma4           disable FMA4 optimizations
 298   --disable-armv5te        disable armv5te optimizations
 299   --disable-armv6          disable armv6 optimizations
 300   --disable-armv6t2        disable armv6t2 optimizations
 301   --disable-vfp            disable VFP optimizations
 302   --disable-neon           disable NEON optimizations
 303   --disable-vis            disable VIS optimizations
 304   --disable-inline-asm     disable use of inline assembler
 305   --disable-yasm           disable use of yasm assembler
 306   --disable-mips32r2       disable MIPS32R2 optimizations
 307   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 308   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 309   --disable-mipsfpu        disable floating point MIPS optimizations
 310   --disable-fast-unaligned consider unaligned accesses slow
 311
 312 Developer options (useful when working on FFmpeg itself):
 313   --enable-coverage        build with test coverage instrumentation
 314   --disable-debug          disable debugging symbols
 315   --enable-debug=LEVEL     set the debug level [$debuglevel]
 316   --disable-optimizations  disable compiler optimizations
 317   --enable-extra-warnings  enable more compiler warnings
 318   --disable-stripping      disable stripping of executables and shared libraries
 319   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 320                            2 causes a slowdown at runtime.
 321   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 322   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 323                            leaks and errors, using the specified valgrind binary.
 324                            Cannot be combined with --target-exec
 325   --enable-ftrapv          Trap arithmetic overflows
 326   --samples=PATH           location of test samples for FATE, if not set use
 327                            \$FATE_SAMPLES at make invocation time.
 328   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 329                            should be used only for debugging purposes)
 330   --enable-random          randomly enable/disable components
 331   --disable-random
 332   --enable-random=LIST     randomly enable/disable specific components or
 333   --disable-random=LIST    component groups. LIST is a comma-separated list
 334                            of NAME[:PROB] entries where NAME is a component
 335                            (group) and PROB the probability associated with
 336                            NAME (default 0.5).
 337   --random-seed=VALUE      seed value for --enable/disable-random
 338
 339 NOTE: Object files are built at the place where configure is launched.
 340 EOF
 341   exit 0
 342 }
 343
 344 quotes='""'
 345
 346 log(){
 347     echo "$@" >> $logfile
 348 }
 349
 350 log_file(){
 351     log BEGIN $1
 352     pr -n -t $1 >> $logfile
 353     log END $1
 354 }
 355
 356 echolog(){
 357     log "$@"
 358     echo "$@"
 359 }
 360
 361 warn(){
 362     log "WARNING: $*"
 363     WARNINGS="${WARNINGS}WARNING: $*\n"
 364 }
 365
 366 die(){
 367     echolog "$@"
 368     cat <<EOF
 369
 370 If you think configure made a mistake, make sure you are using the latest
 371 version from Git.  If the latest version fails, report the problem to the
 372 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 373 EOF
 374     if disabled logging; then
 375         cat <<EOF
 376 Rerun configure with logging enabled (do not use --disable-logging), and
 377 include the log this produces with your report.
 378 EOF
 379     else
 380         cat <<EOF
 381 Include the log file "$logfile" produced by configure as this will help
 382 solving the problem.
 383 EOF
 384     fi
 385     exit 1
 386 }
 387
 388 # Avoid locale weirdness, besides we really just want to translate ASCII.
 389 toupper(){
 390     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 391 }
 392
 393 tolower(){
 394     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 395 }
 396
 397 c_escape(){
 398     echo "$*" | sed 's/["\\]/\\\0/g'
 399 }
 400
 401 sh_quote(){
 402     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 403     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 404     echo "$v"
 405 }
 406
 407 cleanws(){
 408     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 409 }
 410
 411 filter(){
 412     pat=$1
 413     shift
 414     for v; do
 415         eval "case $v in $pat) echo $v ;; esac"
 416     done
 417 }
 418
 419 filter_out(){
 420     pat=$1
 421     shift
 422     for v; do
 423         eval "case $v in $pat) ;; *) echo $v ;; esac"
 424     done
 425 }
 426
 427 map(){
 428     m=$1
 429     shift
 430     for v; do eval $m; done
 431 }
 432
 433 add_suffix(){
 434     suffix=$1
 435     shift
 436     for v; do echo ${v}${suffix}; done
 437 }
 438
 439 set_all(){
 440     value=$1
 441     shift
 442     for var in $*; do
 443         eval $var=$value
 444     done
 445 }
 446
 447 set_weak(){
 448     value=$1
 449     shift
 450     for var; do
 451         eval : \${$var:=$value}
 452     done
 453 }
 454
 455 set_safe(){
 456     var=$1
 457     shift
 458     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 459 }
 460
 461 get_safe(){
 462     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 463 }
 464
 465 pushvar(){
 466     for var in $*; do
 467         eval level=\${${var}_level:=0}
 468         eval ${var}_${level}="\$$var"
 469         eval ${var}_level=$(($level+1))
 470     done
 471 }
 472
 473 popvar(){
 474     for var in $*; do
 475         eval level=\${${var}_level:-0}
 476         test $level = 0 && continue
 477         eval level=$(($level-1))
 478         eval $var="\${${var}_${level}}"
 479         eval ${var}_level=$level
 480         eval unset ${var}_${level}
 481     done
 482 }
 483
 484 enable(){
 485     set_all yes $*
 486 }
 487
 488 disable(){
 489     set_all no $*
 490 }
 491
 492 enable_weak(){
 493     set_weak yes $*
 494 }
 495
 496 disable_weak(){
 497     set_weak no $*
 498 }
 499
 500 enable_safe(){
 501     for var; do
 502         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 503     done
 504 }
 505
 506 disable_safe(){
 507     for var; do
 508         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 509     done
 510 }
 511
 512 do_enable_deep(){
 513     for var; do
 514         enabled $var && continue
 515         eval sel="\$${var}_select"
 516         eval sgs="\$${var}_suggest"
 517         pushvar var sgs
 518         enable_deep $sel
 519         popvar sgs
 520         enable_deep_weak $sgs
 521         popvar var
 522     done
 523 }
 524
 525 enable_deep(){
 526     do_enable_deep $*
 527     enable $*
 528 }
 529
 530 enable_deep_weak(){
 531     do_enable_deep $*
 532     enable_weak $*
 533 }
 534
 535 enabled(){
 536     test "${1#!}" = "$1" && op== || op=!=
 537     eval test "x\$${1#!}" $op "xyes"
 538 }
 539
 540 disabled(){
 541     test "${1#!}" = "$1" && op== || op=!=
 542     eval test "x\$${1#!}" $op "xno"
 543 }
 544
 545 enabled_all(){
 546     for opt; do
 547         enabled $opt || return 1
 548     done
 549 }
 550
 551 disabled_all(){
 552     for opt; do
 553         disabled $opt || return 1
 554     done
 555 }
 556
 557 enabled_any(){
 558     for opt; do
 559         enabled $opt && return 0
 560     done
 561 }
 562
 563 disabled_any(){
 564     for opt; do
 565         disabled $opt && return 0
 566     done
 567     return 1
 568 }
 569
 570 set_default(){
 571     for opt; do
 572         eval : \${$opt:=\$${opt}_default}
 573     done
 574 }
 575
 576 is_in(){
 577     value=$1
 578     shift
 579     for var in $*; do
 580         [ $var = $value ] && return 0
 581     done
 582     return 1
 583 }
 584
 585 do_check_deps(){
 586     for cfg; do
 587         cfg="${cfg#!}"
 588         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 589         disabled ${cfg}_checking && continue
 590         enable ${cfg}_checking
 591         append allopts $cfg
 592
 593         eval dep_all="\$${cfg}_deps"
 594         eval dep_any="\$${cfg}_deps_any"
 595         eval dep_sel="\$${cfg}_select"
 596         eval dep_sgs="\$${cfg}_suggest"
 597         eval dep_ifa="\$${cfg}_if"
 598         eval dep_ifn="\$${cfg}_if_any"
 599
 600         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 601         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 602         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 603
 604         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 605         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 606         enabled_all  $dep_all || disable $cfg
 607         enabled_any  $dep_any || disable $cfg
 608         disabled_any $dep_sel && disable $cfg
 609
 610         if enabled $cfg; then
 611             enable_deep $dep_sel
 612             enable_deep_weak $dep_sgs
 613         fi
 614
 615         disable ${cfg}_checking
 616     done
 617 }
 618
 619 check_deps(){
 620     unset allopts
 621
 622     do_check_deps "$@"
 623
 624     for cfg in $allopts; do
 625         enabled $cfg || continue
 626         eval dep_extralibs="\$${cfg}_extralibs"
 627         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 628     done
 629 }
 630
 631 print_config(){
 632     pfx=$1
 633     files=$2
 634     shift 2
 635     map 'eval echo "$v \${$v:-no}"' "$@" |
 636     awk "BEGIN { split(\"$files\", files) }
 637         {
 638             c = \"$pfx\" toupper(\$1);
 639             v = \$2;
 640             sub(/yes/, 1, v);
 641             sub(/no/,  0, v);
 642             for (f in files) {
 643                 file = files[f];
 644                 if (file ~ /\\.h\$/) {
 645                     printf(\"#define %s %d\\n\", c, v) >>file;
 646                 } else if (file ~ /\\.asm\$/) {
 647                     printf(\"%%define %s %d\\n\", c, v) >>file;
 648                 } else if (file ~ /\\.mak\$/) {
 649                     n = -v ? \"\" : \"!\";
 650                     printf(\"%s%s=yes\\n\", n, c) >>file;
 651                 }
 652             }
 653         }"
 654 }
 655
 656 print_enabled(){
 657     suf=$1
 658     shift
 659     for v; do
 660         enabled $v && printf "%s\n" ${v%$suf};
 661     done
 662 }
 663
 664 append(){
 665     var=$1
 666     shift
 667     eval "$var=\"\$$var $*\""
 668 }
 669
 670 prepend(){
 671     var=$1
 672     shift
 673     eval "$var=\"$* \$$var\""
 674 }
 675
 676 add_cppflags(){
 677     append CPPFLAGS "$@"
 678 }
 679
 680 add_cflags(){
 681     append CFLAGS $($cflags_filter "$@")
 682 }
 683
 684 add_cxxflags(){
 685     append CXXFLAGS $($cflags_filter "$@")
 686 }
 687
 688 add_asflags(){
 689     append ASFLAGS $($asflags_filter "$@")
 690 }
 691
 692 add_ldflags(){
 693     append LDFLAGS $($ldflags_filter "$@")
 694 }
 695
 696 add_extralibs(){
 697     prepend extralibs $($ldflags_filter "$@")
 698 }
 699
 700 add_host_cflags(){
 701     append host_cflags $($host_cflags_filter "$@")
 702 }
 703
 704 add_host_ldflags(){
 705     append host_ldflags $($host_ldflags_filter "$@")
 706 }
 707
 708 add_compat(){
 709     append compat_objs $1
 710     shift
 711     map 'add_cppflags -D$v' "$@"
 712 }
 713
 714 check_cmd(){
 715     log "$@"
 716     "$@" >> $logfile 2>&1
 717 }
 718
 719 cc_o(){
 720     eval printf '%s\\n' $CC_O
 721 }
 722
 723 cc_e(){
 724     eval printf '%s\\n' $CC_E
 725 }
 726
 727 check_cc(){
 728     log check_cc "$@"
 729     cat > $TMPC
 730     log_file $TMPC
 731     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 732 }
 733
 734 check_cxx(){
 735     log check_cxx "$@"
 736     cat > $TMPCPP
 737     log_file $TMPCPP
 738     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 739 }
 740
 741 check_cpp(){
 742     log check_cpp "$@"
 743     cat > $TMPC
 744     log_file $TMPC
 745     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 746 }
 747
 748 as_o(){
 749     eval printf '%s\\n' $AS_O
 750 }
 751
 752 check_as(){
 753     log check_as "$@"
 754     cat > $TMPS
 755     log_file $TMPS
 756     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 757 }
 758
 759 check_inline_asm(){
 760     log check_inline_asm "$@"
 761     name="$1"
 762     code="$2"
 763     shift 2
 764     disable $name
 765     check_cc "$@" <<EOF && enable $name
 766 void foo(void){ __asm__ volatile($code); }
 767 EOF
 768 }
 769
 770 check_insn(){
 771     log check_insn "$@"
 772     check_inline_asm ${1}_inline "\"$2\""
 773     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 774 }
 775
 776 check_yasm(){
 777     log check_yasm "$@"
 778     echo "$1" > $TMPS
 779     log_file $TMPS
 780     shift 1
 781     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 782 }
 783
 784 ld_o(){
 785     eval printf '%s\\n' $LD_O
 786 }
 787
 788 check_ld(){
 789     log check_ld "$@"
 790     type=$1
 791     shift 1
 792     flags=$(filter_out '-l*|*.so' $@)
 793     libs=$(filter '-l*|*.so' $@)
 794     check_$type $($cflags_filter $flags) || return
 795     flags=$($ldflags_filter $flags)
 796     libs=$($ldflags_filter $libs)
 797     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 798 }
 799
 800 check_code(){
 801     log check_code "$@"
 802     check=$1
 803     headers=$2
 804     code=$3
 805     shift 3
 806     {
 807         for hdr in $headers; do
 808             echo "#include <$hdr>"
 809         done
 810         echo "int main(void) { $code; return 0; }"
 811     } | check_$check "$@"
 812 }
 813
 814 check_cppflags(){
 815     log check_cppflags "$@"
 816     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 817 int x;
 818 EOF
 819 }
 820
 821 check_cflags(){
 822     log check_cflags "$@"
 823     set -- $($cflags_filter "$@")
 824     check_cc "$@" <<EOF && append CFLAGS "$@"
 825 int x;
 826 EOF
 827 }
 828
 829 check_cxxflags(){
 830     log check_cxxflags "$@"
 831     set -- $($cflags_filter "$@")
 832     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 833 int x;
 834 EOF
 835 }
 836
 837 test_ldflags(){
 838     log test_ldflags "$@"
 839     check_ld "cc" "$@" <<EOF
 840 int main(void){ return 0; }
 841 EOF
 842 }
 843
 844 check_ldflags(){
 845     log check_ldflags "$@"
 846     test_ldflags "$@" && add_ldflags "$@"
 847 }
 848
 849 check_header(){
 850     log check_header "$@"
 851     header=$1
 852     shift
 853     disable_safe $header
 854     check_cpp "$@" <<EOF && enable_safe $header
 855 #include <$header>
 856 int x;
 857 EOF
 858 }
 859
 860 check_func(){
 861     log check_func "$@"
 862     func=$1
 863     shift
 864     disable $func
 865     check_ld "cc" "$@" <<EOF && enable $func
 866 extern int $func();
 867 int main(void){ $func(); }
 868 EOF
 869 }
 870
 871 check_mathfunc(){
 872     log check_mathfunc "$@"
 873     func=$1
 874     narg=$2
 875     shift 2
 876     test $narg = 2 && args="f, g" || args="f"
 877     disable $func
 878     check_ld "cc" "$@" <<EOF && enable $func
 879 #include <math.h>
 880 float foo(float f, float g) { return $func($args); }
 881 int main(void){ return (int) foo; }
 882 EOF
 883 }
 884
 885 check_func_headers(){
 886     log check_func_headers "$@"
 887     headers=$1
 888     funcs=$2
 889     shift 2
 890     {
 891         for hdr in $headers; do
 892             echo "#include <$hdr>"
 893         done
 894         for func in $funcs; do
 895             echo "long check_$func(void) { return (long) $func; }"
 896         done
 897         echo "int main(void) { return 0; }"
 898     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 899 }
 900
 901 check_class_headers_cpp(){
 902     log check_class_headers_cpp "$@"
 903     headers=$1
 904     classes=$2
 905     shift 2
 906     {
 907         for hdr in $headers; do
 908             echo "#include <$hdr>"
 909         done
 910         echo "int main(void) { "
 911         i=1
 912         for class in $classes; do
 913             echo "$class obj$i;"
 914             i=$(expr $i + 1)
 915         done
 916         echo "return 0; }"
 917     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 918 }
 919
 920 check_cpp_condition(){
 921     log check_cpp_condition "$@"
 922     header=$1
 923     condition=$2
 924     shift 2
 925     check_cpp "$@" <<EOF
 926 #include <$header>
 927 #if !($condition)
 928 #error "unsatisfied condition: $condition"
 929 #endif
 930 EOF
 931 }
 932
 933 check_lib(){
 934     log check_lib "$@"
 935     header="$1"
 936     func="$2"
 937     shift 2
 938     check_header $header && check_func $func "$@" && add_extralibs "$@"
 939 }
 940
 941 check_lib2(){
 942     log check_lib2 "$@"
 943     headers="$1"
 944     funcs="$2"
 945     shift 2
 946     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 947 }
 948
 949 check_lib_cpp(){
 950     log check_lib_cpp "$@"
 951     headers="$1"
 952     classes="$2"
 953     shift 2
 954     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 955 }
 956
 957 check_pkg_config(){
 958     log check_pkg_config "$@"
 959     pkg="$1"
 960     headers="$2"
 961     funcs="$3"
 962     shift 3
 963     $pkg_config --exists $pkg 2>/dev/null || return
 964     pkg_cflags=$($pkg_config --cflags $pkg)
 965     pkg_libs=$($pkg_config --libs $pkg)
 966     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 967         set_safe ${pkg}_cflags $pkg_cflags   &&
 968         set_safe ${pkg}_libs   $pkg_libs
 969 }
 970
 971 check_exec(){
 972     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 973 }
 974
 975 check_exec_crash(){
 976     code=$(cat)
 977
 978     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 979     # are safe but may not be available everywhere.  Thus we use
 980     # raise(SIGTERM) instead.  The check is run in a subshell so we
 981     # can redirect the "Terminated" message from the shell.  SIGBUS
 982     # is not defined by standard C so it is used conditionally.
 983
 984     (check_exec "$@") >> $logfile 2>&1 <<EOF
 985 #include <signal.h>
 986 static void sighandler(int sig){
 987     raise(SIGTERM);
 988 }
 989 int func(void){
 990     $code
 991 }
 992 int (*func_ptr)(void) = func;
 993 int main(void){
 994     signal(SIGILL, sighandler);
 995     signal(SIGFPE, sighandler);
 996     signal(SIGSEGV, sighandler);
 997 #ifdef SIGBUS
 998     signal(SIGBUS, sighandler);
 999 #endif
1000     return func_ptr();
1001 }
1002 EOF
1003 }
1004
1005 check_type(){
1006     log check_type "$@"
1007     headers=$1
1008     type=$2
1009     shift 2
1010     disable_safe "$type"
1011     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1012 }
1013
1014 check_struct(){
1015     log check_type "$@"
1016     headers=$1
1017     struct=$2
1018     member=$3
1019     shift 3
1020     disable_safe "${struct}_${member}"
1021     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1022         enable_safe "${struct}_${member}"
1023 }
1024
1025 require(){
1026     name="$1"
1027     header="$2"
1028     func="$3"
1029     shift 3
1030     check_lib $header $func "$@" || die "ERROR: $name not found"
1031 }
1032
1033 require2(){
1034     name="$1"
1035     headers="$2"
1036     func="$3"
1037     shift 3
1038     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1039 }
1040
1041 require_cpp(){
1042     name="$1"
1043     headers="$2"
1044     classes="$3"
1045     shift 3
1046     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1047 }
1048
1049 require_pkg_config(){
1050     pkg="$1"
1051     check_pkg_config "$@" || die "ERROR: $pkg not found"
1052     add_cflags    $(get_safe ${pkg}_cflags)
1053     add_extralibs $(get_safe ${pkg}_libs)
1054 }
1055
1056 hostcc_o(){
1057     eval printf '%s\\n' $HOSTCC_O
1058 }
1059
1060 check_host_cc(){
1061     log check_host_cc "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1065 }
1066
1067 check_host_cflags(){
1068     log check_host_cflags "$@"
1069     set -- $($host_cflags_filter "$@")
1070     check_host_cc "$@" <<EOF && append host_cflags "$@"
1071 int x;
1072 EOF
1073 }
1074
1075 apply(){
1076     file=$1
1077     shift
1078     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1079 }
1080
1081 cp_if_changed(){
1082     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1083     mkdir -p "$(dirname $2)"
1084     $cp_f "$1" "$2"
1085 }
1086
1087 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1088 # system-dependent things.
1089
1090 COMPONENT_LIST="
1091     bsfs
1092     decoders
1093     demuxers
1094     encoders
1095     filters
1096     hwaccels
1097     indevs
1098     muxers
1099     outdevs
1100     parsers
1101     protocols
1102 "
1103
1104 DOCUMENT_LIST="
1105     doc
1106     htmlpages
1107     manpages
1108     podpages
1109     txtpages
1110 "
1111
1112 LIBRARY_LIST="
1113     avcodec
1114     avdevice
1115     avfilter
1116     avformat
1117     avresample
1118     avutil
1119     postproc
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     rdft
1202     runtime_cpudetect
1203     safe_bitstream_reader
1204     shared
1205     small
1206     sram
1207     static
1208     swscale_alpha
1209     thumb
1210     vaapi
1211     vda
1212     vdpau
1213     version3
1214     xmm_clobber_test
1215     x11grab
1216     zlib
1217 "
1218
1219 THREADS_LIST='
1220     pthreads
1221     w32threads
1222     os2threads
1223 '
1224
1225 ARCH_LIST='
1226     aarch64
1227     alpha
1228     arm
1229     avr32
1230     avr32_ap
1231     avr32_uc
1232     bfin
1233     ia64
1234     m68k
1235     mips
1236     mips64
1237     parisc
1238     ppc
1239     ppc64
1240     s390
1241     sh4
1242     sparc
1243     sparc64
1244     tilegx
1245     tilepro
1246     tomi
1247     x86
1248     x86_32
1249     x86_64
1250 '
1251
1252 ARCH_EXT_LIST_ARM='
1253     armv5te
1254     armv6
1255     armv6t2
1256     neon
1257     vfp
1258     vfpv3
1259 '
1260
1261 ARCH_EXT_LIST_X86='
1262     amd3dnow
1263     amd3dnowext
1264     avx
1265     fma4
1266     mmx
1267     mmxext
1268     sse
1269     sse2
1270     sse3
1271     sse4
1272     sse42
1273     ssse3
1274 '
1275
1276 ARCH_EXT_LIST="
1277     $ARCH_EXT_LIST_ARM
1278     $ARCH_EXT_LIST_X86
1279     altivec
1280     ppc4xx
1281     vis
1282     mipsfpu
1283     mips32r2
1284     mipsdspr1
1285     mipsdspr2
1286 "
1287
1288 HAVE_LIST_CMDLINE='
1289     inline_asm
1290     symver
1291     yasm
1292 '
1293
1294 HAVE_LIST_PUB='
1295     bigendian
1296     fast_unaligned
1297     incompatible_fork_abi
1298 '
1299
1300 MATH_FUNCS="
1301     atanf
1302     atan2f
1303     cbrtf
1304     cosf
1305     exp2
1306     exp2f
1307     expf
1308     isinf
1309     isnan
1310     ldexpf
1311     llrint
1312     llrintf
1313     log2
1314     log2f
1315     log10f
1316     lrint
1317     lrintf
1318     powf
1319     rint
1320     round
1321     roundf
1322     sinf
1323     trunc
1324     truncf
1325 "
1326
1327 HAVE_LIST="
1328     $ARCH_EXT_LIST
1329     $(add_suffix _external $ARCH_EXT_LIST)
1330     $(add_suffix _inline   $ARCH_EXT_LIST)
1331     $HAVE_LIST_CMDLINE
1332     $HAVE_LIST_PUB
1333     $THREADS_LIST
1334     $MATH_FUNCS
1335     access
1336     aligned_malloc
1337     aligned_stack
1338     alsa_asoundlib_h
1339     altivec_h
1340     arpa_inet_h
1341     asm_mod_q
1342     asm_mod_y
1343     asm_types_h
1344     attribute_may_alias
1345     attribute_packed
1346     cdio_paranoia_h
1347     cdio_paranoia_paranoia_h
1348     clock_gettime
1349     closesocket
1350     cmov
1351     CommandLineToArgvW
1352     cpunop
1353     CryptGenRandom
1354     dcbzl
1355     dev_bktr_ioctl_bt848_h
1356     dev_bktr_ioctl_meteor_h
1357     dev_ic_bt8xx_h
1358     dev_video_bktr_ioctl_bt848_h
1359     dev_video_meteor_ioctl_meteor_h
1360     direct_h
1361     dlfcn_h
1362     dlopen
1363     dos_paths
1364     dxva_h
1365     ebp_available
1366     ebx_available
1367     fast_64bit
1368     fast_clz
1369     fast_cmov
1370     fcntl
1371     fork
1372     getaddrinfo
1373     gethrtime
1374     getopt
1375     GetProcessAffinityMask
1376     GetProcessMemoryInfo
1377     GetProcessTimes
1378     GetSystemTimeAsFileTime
1379     getrusage
1380     getservbyport
1381     gettimeofday
1382     glob
1383     gnu_as
1384     ibm_asm
1385     inet_aton
1386     io_h
1387     isatty
1388     jack_port_get_latency_range
1389     kbhit
1390     ldbrx
1391     libdc1394_1
1392     libdc1394_2
1393     local_aligned_16
1394     local_aligned_8
1395     localtime_r
1396     loongson
1397     lzo1x_999_compress
1398     machine_ioctl_bt848_h
1399     machine_ioctl_meteor_h
1400     makeinfo
1401     malloc_h
1402     MapViewOfFile
1403     memalign
1404     mkstemp
1405     mm_empty
1406     mmap
1407     mprotect
1408     msvcrt
1409     nanosleep
1410     openjpeg_1_5_openjpeg_h
1411     PeekNamedPipe
1412     perl
1413     pod2man
1414     poll_h
1415     posix_memalign
1416     pthread_cancel
1417     rdtsc
1418     rsync_contimeout
1419     sched_getaffinity
1420     sdl
1421     sdl_video_size
1422     SetConsoleTextAttribute
1423     setmode
1424     setrlimit
1425     Sleep
1426     sndio_h
1427     socklen_t
1428     soundcard_h
1429     strerror_r
1430     struct_addrinfo
1431     struct_group_source_req
1432     struct_ip_mreq_source
1433     struct_ipv6_mreq
1434     struct_pollfd
1435     struct_rusage_ru_maxrss
1436     struct_sctp_event_subscribe
1437     struct_sockaddr_in6
1438     struct_sockaddr_sa_len
1439     struct_sockaddr_storage
1440     struct_v4l2_frmivalenum_discrete
1441     symver_asm_label
1442     symver_gnu_asm
1443     sysconf
1444     sysctl
1445     sys_mman_h
1446     sys_param_h
1447     sys_resource_h
1448     sys_select_h
1449     sys_soundcard_h
1450     sys_time_h
1451     sys_videoio_h
1452     termios_h
1453     texi2html
1454     threads
1455     unistd_h
1456     usleep
1457     vfp_args
1458     VirtualAlloc
1459     windows_h
1460     winsock2_h
1461     xform_asm
1462     xmm_clobbers
1463 "
1464
1465 # options emitted with CONFIG_ prefix but not available on the command line
1466 CONFIG_EXTRA="
1467     aandcttables
1468     ac3dsp
1469     error_resilience
1470     gcrypt
1471     golomb
1472     gplv3
1473     h264chroma
1474     h264dsp
1475     h264pred
1476     h264qpel
1477     huffman
1478     lgplv3
1479     lpc
1480     mpegaudio
1481     mpegaudiodsp
1482     mpegvideo
1483     mpegvideoenc
1484     nettle
1485     rangecoder
1486     rtpdec
1487     rtpenc_chain
1488     sinewin
1489     videodsp
1490     vp3dsp
1491 "
1492
1493 CMDLINE_SELECT="
1494     $ARCH_EXT_LIST
1495     $CONFIG_LIST
1496     $HAVE_LIST_CMDLINE
1497     $THREADS_LIST
1498     asm
1499     coverage
1500     cross_compile
1501     debug
1502     extra_warnings
1503     logging
1504     lto
1505     optimizations
1506     stripping
1507 "
1508
1509 PATHS_LIST='
1510     bindir
1511     datadir
1512     incdir
1513     libdir
1514     mandir
1515     prefix
1516     shlibdir
1517 '
1518
1519 CMDLINE_SET="
1520     $PATHS_LIST
1521     ar
1522     arch
1523     as
1524     assert_level
1525     build_suffix
1526     cc
1527     cpu
1528     cross_prefix
1529     cxx
1530     dep_cc
1531     extra_version
1532     host_cc
1533     host_cflags
1534     host_ld
1535     host_ldflags
1536     host_libs
1537     host_os
1538     install
1539     ld
1540     logfile
1541     malloc_prefix
1542     nm
1543     optflags
1544     pkg_config
1545     progs_suffix
1546     random_seed
1547     samples
1548     strip
1549     sysinclude
1550     sysroot
1551     target_exec
1552     target_os
1553     target_path
1554     toolchain
1555     valgrind
1556     yasmexe
1557 "
1558
1559 CMDLINE_APPEND="
1560     extra_cflags
1561     extra_cxxflags
1562 "
1563
1564 # code dependency declarations
1565
1566 # architecture extensions
1567
1568 armv5te_deps="arm"
1569 armv6_deps="arm"
1570 armv6t2_deps="arm"
1571 neon_deps="arm"
1572 vfp_deps="arm"
1573 vfpv3_deps="vfp"
1574
1575 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1576
1577 mipsfpu_deps="mips"
1578 mips32r2_deps="mips"
1579 mipsdspr1_deps="mips"
1580 mipsdspr2_deps="mips"
1581
1582 altivec_deps="ppc"
1583 ppc4xx_deps="ppc"
1584
1585 vis_deps="sparc"
1586
1587 x86_64_suggest="cmov fast_cmov"
1588
1589 amd3dnow_deps="mmx"
1590 amd3dnowext_deps="amd3dnow"
1591 mmx_deps="x86"
1592 mmxext_deps="mmx"
1593 sse_deps="mmxext"
1594 sse2_deps="sse"
1595 sse3_deps="sse2"
1596 ssse3_deps="sse3"
1597 sse4_deps="ssse3"
1598 sse42_deps="sse4"
1599 avx_deps="sse42"
1600 fma4_deps="avx"
1601
1602 mmx_external_deps="yasm"
1603 mmx_inline_deps="inline_asm"
1604 mmx_suggest="mmx_external mmx_inline"
1605
1606 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1607     eval dep=\$${ext}_deps
1608     eval ${ext}_external_deps='"${dep}_external"'
1609     eval ${ext}_inline_deps='"${dep}_inline"'
1610     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1611 done
1612
1613 aligned_stack_if_any="ppc x86"
1614 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1615 fast_clz_if_any="alpha avr32 mips ppc x86"
1616 fast_unaligned_if_any="ppc x86"
1617
1618 inline_asm_deps="!tms470"
1619 need_memalign="altivec neon sse"
1620
1621 symver_if_any="symver_asm_label symver_gnu_asm"
1622
1623 log2_deps="!msvcrt"
1624
1625 # subsystems
1626 dct_select="rdft"
1627 mdct_select="fft"
1628 rdft_select="fft"
1629 mpegaudio_select="mpegaudiodsp"
1630 mpegaudiodsp_select="dct"
1631 mpegvideo_select="videodsp"
1632 mpegvideoenc_select="mpegvideo"
1633
1634 # decoders / encoders
1635 aac_decoder_select="mdct sinewin"
1636 aac_encoder_select="mdct sinewin"
1637 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1638 ac3_decoder_select="mdct ac3dsp ac3_parser"
1639 ac3_encoder_select="mdct ac3dsp"
1640 ac3_fixed_encoder_select="mdct ac3dsp"
1641 alac_encoder_select="lpc"
1642 amrnb_decoder_select="lsp"
1643 amrwb_decoder_select="lsp"
1644 amv_encoder_select="aandcttables"
1645 atrac1_decoder_select="mdct sinewin"
1646 atrac3_decoder_select="mdct"
1647 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1648 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1649 cavs_decoder_select="golomb mpegvideo"
1650 comfortnoise_encoder_select="lpc"
1651 cook_decoder_select="mdct sinewin"
1652 cscd_decoder_select="lzo"
1653 cscd_decoder_suggest="zlib"
1654 dca_decoder_select="mdct"
1655 dirac_decoder_select="dwt golomb videodsp"
1656 dnxhd_encoder_select="aandcttables mpegvideoenc"
1657 dxa_decoder_select="zlib"
1658 eac3_decoder_select="ac3_decoder"
1659 eac3_encoder_select="ac3_encoder"
1660 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1661 eatgq_decoder_select="aandcttables"
1662 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1663 exr_decoder_select="zlib"
1664 ffv1_decoder_select="golomb rangecoder"
1665 ffv1_encoder_select="rangecoder"
1666 ffvhuff_encoder_select="huffman"
1667 flac_decoder_select="golomb"
1668 flac_encoder_select="golomb lpc"
1669 flashsv_decoder_select="zlib"
1670 flashsv_encoder_select="zlib"
1671 flashsv2_encoder_select="zlib"
1672 flashsv2_decoder_select="zlib"
1673 flv_decoder_select="h263_decoder"
1674 flv_encoder_select="h263_encoder"
1675 fraps_decoder_select="huffman"
1676 h261_decoder_select="error_resilience mpegvideo"
1677 h261_encoder_select="aandcttables mpegvideoenc"
1678 h263_decoder_select="error_resilience h263_parser mpegvideo"
1679 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1680 h263i_decoder_select="h263_decoder"
1681 h263p_encoder_select="h263_encoder"
1682 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1683 huffyuv_encoder_select="huffman"
1684 iac_decoder_select="fft mdct sinewin"
1685 imc_decoder_select="fft mdct sinewin"
1686 jpegls_decoder_select="golomb"
1687 jpegls_encoder_select="golomb"
1688 ljpeg_encoder_select="aandcttables mpegvideoenc"
1689 loco_decoder_select="golomb"
1690 mdec_decoder_select="error_resilience mpegvideo"
1691 mjpeg_encoder_select="aandcttables mpegvideoenc"
1692 mlp_decoder_select="mlp_parser"
1693 mp1_decoder_select="mpegaudio"
1694 mp1float_decoder_select="mpegaudio"
1695 mp2_decoder_select="mpegaudio"
1696 mp2float_decoder_select="mpegaudio"
1697 mp3_decoder_select="mpegaudio"
1698 mp3adu_decoder_select="mpegaudio"
1699 mp3adufloat_decoder_select="mpegaudio"
1700 mp3float_decoder_select="mpegaudio"
1701 mp3on4_decoder_select="mpegaudio"
1702 mp3on4float_decoder_select="mpegaudio"
1703 mpc7_decoder_select="mpegaudiodsp"
1704 mpc8_decoder_select="mpegaudiodsp"
1705 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1706 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1707 mpeg1video_decoder_select="error_resilience mpegvideo"
1708 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1709 mpeg2video_decoder_select="error_resilience mpegvideo"
1710 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1711 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1712 mpeg4_encoder_select="h263_encoder"
1713 msmpeg4v1_decoder_select="h263_decoder"
1714 msmpeg4v1_encoder_select="h263_encoder"
1715 msmpeg4v2_decoder_select="h263_decoder"
1716 msmpeg4v2_encoder_select="h263_encoder"
1717 msmpeg4v3_decoder_select="h263_decoder"
1718 msmpeg4v3_encoder_select="h263_encoder"
1719 mss2_decoder_select="vc1_decoder"
1720 nellymoser_decoder_select="mdct sinewin"
1721 nellymoser_encoder_select="mdct sinewin"
1722 nuv_decoder_select="lzo"
1723 png_decoder_select="zlib"
1724 png_encoder_select="zlib"
1725 qcelp_decoder_select="lsp"
1726 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1727 ra_144_encoder_select="lpc"
1728 ralf_decoder_select="golomb"
1729 rv10_decoder_select="h263_decoder"
1730 rv10_encoder_select="h263_encoder"
1731 rv20_decoder_select="h263_decoder"
1732 rv20_encoder_select="h263_encoder"
1733 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1734 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1735 shorten_decoder_select="golomb"
1736 sipr_decoder_select="lsp"
1737 snow_decoder_select="dwt rangecoder"
1738 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1739 sonic_decoder_select="golomb"
1740 sonic_encoder_select="golomb"
1741 sonic_ls_encoder_select="golomb"
1742 svq1_decoder_select="error_resilience mpegvideo"
1743 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1744 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1745 svq3_decoder_suggest="zlib"
1746 theora_decoder_select="vp3_decoder"
1747 tiff_decoder_suggest="zlib"
1748 tiff_encoder_suggest="zlib"
1749 truehd_decoder_select="mlp_parser"
1750 tscc_decoder_select="zlib"
1751 twinvq_decoder_select="mdct lsp sinewin"
1752 utvideo_encoder_select="huffman"
1753 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1754 vc1image_decoder_select="vc1_decoder"
1755 vorbis_decoder_select="mdct"
1756 vorbis_encoder_select="mdct"
1757 vp3_decoder_select="vp3dsp videodsp"
1758 vp5_decoder_select="vp3dsp videodsp"
1759 vp6_decoder_select="huffman vp3dsp videodsp"
1760 vp6a_decoder_select="vp6_decoder"
1761 vp6f_decoder_select="vp6_decoder"
1762 vp8_decoder_select="h264pred videodsp"
1763 wmapro_decoder_select="mdct sinewin"
1764 wmav1_decoder_select="mdct sinewin"
1765 wmav1_encoder_select="mdct sinewin"
1766 wmav2_decoder_select="mdct sinewin"
1767 wmav2_encoder_select="mdct sinewin"
1768 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1769 wmv1_decoder_select="h263_decoder"
1770 wmv1_encoder_select="h263_encoder"
1771 wmv2_decoder_select="h263_decoder"
1772 wmv2_encoder_select="h263_encoder"
1773 wmv3_decoder_select="vc1_decoder"
1774 wmv3image_decoder_select="wmv3_decoder"
1775 zerocodec_decoder_select="zlib"
1776 zlib_decoder_select="zlib"
1777 zlib_encoder_select="zlib"
1778 zmbv_decoder_select="zlib"
1779 zmbv_encoder_select="zlib"
1780
1781 # hardware accelerators
1782 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1783 vaapi_deps="va_va_h"
1784 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1785 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1786
1787 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1788 h263_vdpau_hwaccel_select="vdpau h263_decoder"
1789 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1790 h264_dxva2_hwaccel_deps="dxva2api_h"
1791 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1792 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1793 h264_vda_decoder_select="vda h264_parser h264_decoder"
1794 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1795 h264_vda_hwaccel_select="vda h264_decoder"
1796 h264_vdpau_decoder_select="vdpau h264_decoder"
1797 h264_vdpau_hwaccel_select="vdpau h264_decoder"
1798 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1799 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1800 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1801 mpeg2_crystalhd_decoder_select="crystalhd"
1802 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1803 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1804 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1805 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1806 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1807 mpeg4_crystalhd_decoder_select="crystalhd"
1808 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1809 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1810 mpeg4_vdpau_hwaccel_select="vdpau mpeg4_decoder"
1811 msmpeg4_crystalhd_decoder_select="crystalhd"
1812 vc1_crystalhd_decoder_select="crystalhd"
1813 vc1_dxva2_hwaccel_deps="dxva2api_h"
1814 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1815 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1816 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1817 vc1_vdpau_hwaccel_select="vdpau vc1_decoder"
1818 wmv3_crystalhd_decoder_select="crystalhd"
1819 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1820 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1821 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1822 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1823
1824 # parsers
1825 h264_parser_select="error_resilience golomb h264dsp h264pred mpegvideo"
1826 mpeg4video_parser_select="error_resilience mpegvideo"
1827 mpegvideo_parser_select="error_resilience mpegvideo"
1828 vc1_parser_select="error_resilience mpegvideo"
1829
1830 # external libraries
1831 libaacplus_encoder_deps="libaacplus"
1832 libcelt_decoder_deps="libcelt"
1833 libfaac_encoder_deps="libfaac"
1834 libfdk_aac_encoder_deps="libfdk_aac"
1835 libgsm_decoder_deps="libgsm"
1836 libgsm_encoder_deps="libgsm"
1837 libgsm_ms_decoder_deps="libgsm"
1838 libgsm_ms_encoder_deps="libgsm"
1839 libilbc_decoder_deps="libilbc"
1840 libilbc_encoder_deps="libilbc"
1841 libmodplug_demuxer_deps="libmodplug"
1842 libmp3lame_encoder_deps="libmp3lame"
1843 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1844 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1845 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1846 libopenjpeg_decoder_deps="libopenjpeg"
1847 libopenjpeg_encoder_deps="libopenjpeg"
1848 libopus_decoder_deps="libopus"
1849 libopus_encoder_deps="libopus"
1850 libschroedinger_decoder_deps="libschroedinger"
1851 libschroedinger_encoder_deps="libschroedinger"
1852 libspeex_decoder_deps="libspeex"
1853 libspeex_encoder_deps="libspeex"
1854 libstagefright_h264_decoder_deps="libstagefright_h264"
1855 libtheora_encoder_deps="libtheora"
1856 libtwolame_encoder_deps="libtwolame"
1857 libvo_aacenc_encoder_deps="libvo_aacenc"
1858 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1859 libvorbis_decoder_deps="libvorbis"
1860 libvorbis_encoder_deps="libvorbis"
1861 libvpx_vp8_decoder_deps="libvpx"
1862 libvpx_vp8_encoder_deps="libvpx"
1863 libvpx_vp9_decoder_deps="libvpx"
1864 libvpx_vp9_encoder_deps="libvpx"
1865 libx264_encoder_deps="libx264"
1866 libx264rgb_encoder_deps="libx264"
1867 libxavs_encoder_deps="libxavs"
1868 libxvid_encoder_deps="libxvid"
1869 libutvideo_decoder_deps="libutvideo"
1870 libutvideo_encoder_deps="libutvideo"
1871
1872 # demuxers / muxers
1873 ac3_demuxer_select="ac3_parser"
1874 asf_stream_muxer_select="asf_muxer"
1875 avisynth_demuxer_deps="avisynth"
1876 dirac_demuxer_select="dirac_parser"
1877 dts_demuxer_select="dca_parser"
1878 dtshd_demuxer_select="dca_parser"
1879 eac3_demuxer_select="ac3_parser"
1880 f4v_muxer_select="mov_muxer"
1881 flac_demuxer_select="flac_parser"
1882 ipod_muxer_select="mov_muxer"
1883 ismv_muxer_select="mov_muxer"
1884 libnut_demuxer_deps="libnut"
1885 libnut_muxer_deps="libnut"
1886 matroska_audio_muxer_select="matroska_muxer"
1887 matroska_demuxer_suggest="bzlib lzo zlib"
1888 mov_demuxer_suggest="zlib"
1889 mov_muxer_select="rtpenc_chain"
1890 mp3_demuxer_select="mpegaudio_parser"
1891 mp4_muxer_select="mov_muxer"
1892 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1893 mpegtsraw_demuxer_select="mpegts_demuxer"
1894 mxf_d10_muxer_select="mxf_muxer"
1895 ogg_demuxer_select="golomb"
1896 psp_muxer_select="mov_muxer"
1897 rtp_demuxer_select="sdp_demuxer"
1898 rtp_muxer_select="mpegvideo"
1899 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1900 rtsp_demuxer_select="http_protocol rtpdec"
1901 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1902 sap_demuxer_select="sdp_demuxer"
1903 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1904 sdp_demuxer_select="rtpdec"
1905 smoothstreaming_muxer_select="ismv_muxer"
1906 spdif_muxer_select="aac_parser"
1907 tak_demuxer_select="tak_parser"
1908 tg2_muxer_select="mov_muxer"
1909 tgp_muxer_select="mov_muxer"
1910 vobsub_demuxer_select="mpegps_demuxer"
1911 w64_demuxer_deps="wav_demuxer"
1912 w64_muxer_deps="wav_muxer"
1913
1914 # indevs / outdevs
1915 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1916 alsa_outdev_deps="alsa_asoundlib_h"
1917 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1918 caca_outdev_deps="libcaca"
1919 dshow_indev_deps="IBaseFilter"
1920 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1921 dv1394_indev_deps="dv1394 dv_demuxer"
1922 fbdev_indev_deps="linux_fb_h"
1923 iec61883_indev_deps="libiec61883"
1924 jack_indev_deps="jack_jack_h sem_timedwait"
1925 lavfi_indev_deps="avfilter"
1926 libcdio_indev_deps="libcdio"
1927 libdc1394_indev_deps="libdc1394"
1928 libv4l2_indev_deps="libv4l2"
1929 openal_indev_deps="openal"
1930 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1931 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1932 pulse_indev_deps="libpulse"
1933 sdl_outdev_deps="sdl"
1934 sndio_indev_deps="sndio_h"
1935 sndio_outdev_deps="sndio_h"
1936 v4l_indev_deps="linux_videodev_h"
1937 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1938 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1939 vfwcap_indev_extralibs="-lavicap32"
1940 x11grab_indev_deps="x11grab"
1941
1942 # protocols
1943 bluray_protocol_deps="libbluray"
1944 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1945 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1946 ffrtmpcrypt_protocol_select="tcp_protocol"
1947 ffrtmphttp_protocol_deps="!librtmp_protocol"
1948 ffrtmphttp_protocol_select="http_protocol"
1949 gopher_protocol_select="network"
1950 httpproxy_protocol_select="tcp_protocol"
1951 http_protocol_select="tcp_protocol"
1952 https_protocol_select="tls_protocol"
1953 librtmp_protocol_deps="librtmp"
1954 librtmpe_protocol_deps="librtmp"
1955 librtmps_protocol_deps="librtmp"
1956 librtmpt_protocol_deps="librtmp"
1957 librtmpte_protocol_deps="librtmp"
1958 mmsh_protocol_select="http_protocol"
1959 mmst_protocol_select="network"
1960 rtmp_protocol_deps="!librtmp_protocol"
1961 rtmp_protocol_select="tcp_protocol"
1962 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1963 rtmps_protocol_deps="!librtmp_protocol"
1964 rtmps_protocol_select="tls_protocol"
1965 rtmpt_protocol_select="ffrtmphttp_protocol"
1966 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1967 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1968 rtp_protocol_select="udp_protocol"
1969 sctp_protocol_deps="struct_sctp_event_subscribe"
1970 sctp_protocol_select="network"
1971 srtp_protocol_select="rtp_protocol"
1972 tcp_protocol_select="network"
1973 tls_protocol_deps_any="openssl gnutls"
1974 tls_protocol_select="tcp_protocol"
1975 udp_protocol_select="network"
1976
1977 # filters
1978 aconvert_filter_deps="swresample"
1979 amovie_filter_deps="avcodec avformat"
1980 aresample_filter_deps="swresample"
1981 ass_filter_deps="libass"
1982 asyncts_filter_deps="avresample"
1983 atempo_filter_deps="avcodec rdft"
1984 blackframe_filter_deps="gpl"
1985 boxblur_filter_deps="gpl"
1986 colormatrix_filter_deps="gpl"
1987 cropdetect_filter_deps="gpl"
1988 decimate_filter_deps="gpl avcodec"
1989 delogo_filter_deps="gpl"
1990 deshake_filter_deps="avcodec"
1991 drawtext_filter_deps="libfreetype"
1992 ebur128_filter_deps="gpl"
1993 flite_filter_deps="libflite"
1994 frei0r_filter_deps="frei0r dlopen"
1995 frei0r_filter_extralibs='$ldl'
1996 frei0r_src_filter_deps="frei0r dlopen"
1997 frei0r_src_filter_extralibs='$ldl'
1998 geq_filter_deps="gpl"
1999 histeq_filter_deps="gpl"
2000 hqdn3d_filter_deps="gpl"
2001 hue_filter_deps="gpl"
2002 kerndeint_filter_deps="gpl"
2003 movie_filter_deps="avcodec avformat"
2004 mp_filter_deps="gpl avcodec swscale inline_asm"
2005 mptestsrc_filter_deps="gpl"
2006 negate_filter_deps="lut_filter"
2007 resample_filter_deps="avresample"
2008 ocv_filter_deps="libopencv"
2009 pan_filter_deps="swresample"
2010 pp_filter_deps="gpl postproc"
2011 removelogo_filter_deps="avcodec avformat swscale"
2012 scale_filter_deps="swscale"
2013 smartblur_filter_deps="gpl swscale"
2014 showspectrum_filter_deps="avcodec rdft"
2015 subtitles_filter_deps="avformat avcodec libass"
2016 super2xsai_filter_deps="gpl"
2017 tinterlace_filter_deps="gpl"
2018 yadif_filter_deps="gpl"
2019 pixfmts_super2xsai_test_deps="super2xsai_filter"
2020 tinterlace_merge_test_deps="tinterlace_filter"
2021 tinterlace_pad_test_deps="tinterlace_filter"
2022
2023 # libraries
2024 avcodec_deps="avutil"
2025 avdevice_deps="avutil avcodec avformat"
2026 avfilter_deps="avutil"
2027 avformat_deps="avutil avcodec"
2028 avresample_deps="avutil"
2029 postproc_deps="avutil gpl"
2030 swscale_deps="avutil"
2031
2032 # programs
2033 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2034 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2035                setpts_filter null_filter anull_filter ffabuffersink_filter"
2036 ffplay_deps="avcodec avformat swscale swresample sdl"
2037 ffplay_select="ffbuffersink_filter rdft crop_filter"
2038 ffprobe_deps="avcodec avformat"
2039 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2040 ffserver_extralibs='$ldl'
2041
2042 # documentation
2043 podpages_deps="perl"
2044 manpages_deps="perl pod2man"
2045 htmlpages_deps="texi2html"
2046 txtpages_deps="makeinfo"
2047 doc_deps_any="manpages htmlpages podpages txtpages"
2048
2049 # default parameters
2050
2051 logfile="config.log"
2052
2053 # installation paths
2054 prefix_default="/usr/local"
2055 bindir_default='${prefix}/bin'
2056 datadir_default='${prefix}/share/ffmpeg'
2057 incdir_default='${prefix}/include'
2058 libdir_default='${prefix}/lib'
2059 mandir_default='${prefix}/share/man'
2060 shlibdir_default="$libdir_default"
2061
2062 # toolchain
2063 ar_default="ar"
2064 cc_default="gcc"
2065 cxx_default="g++"
2066 host_cc_default="gcc"
2067 cp_f="cp -f"
2068 install="install"
2069 ln_s="ln -sf"
2070 nm_default="nm -g"
2071 objformat="elf"
2072 pkg_config_default=pkg-config
2073 ranlib="ranlib"
2074 strip_default="strip"
2075 yasmexe_default="yasm"
2076
2077 nogas=":"
2078
2079 # machine
2080 arch_default=$(uname -m)
2081 cpu="generic"
2082
2083 # OS
2084 target_os_default=$(tolower $(uname -s))
2085 host_os=$target_os_default
2086
2087 # configurable options
2088 enable $PROGRAM_LIST
2089 enable $DOCUMENT_LIST
2090 enable $(filter_out avresample $LIBRARY_LIST)
2091 enable stripping
2092
2093 enable asm
2094 enable debug
2095 enable doc
2096 enable optimizations
2097 enable runtime_cpudetect
2098 enable safe_bitstream_reader
2099 enable static
2100 enable swscale_alpha
2101
2102 # build settings
2103 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2104 FFSERVERLDFLAGS=-Wl,-E
2105 LIBPREF="lib"
2106 LIBSUF=".a"
2107 FULLNAME='$(NAME)$(BUILDSUF)'
2108 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2109 SLIBPREF="lib"
2110 SLIBSUF=".so"
2111 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2112 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2113 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2114 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2115 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2116 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2117
2118 asflags_filter=echo
2119 cflags_filter=echo
2120 ldflags_filter=echo
2121
2122 AS_C='-c'
2123 AS_O='-o $@'
2124 CC_C='-c'
2125 CC_E='-E -o $@'
2126 CC_O='-o $@'
2127 CXX_C='-c'
2128 CXX_O='-o $@'
2129 LD_O='-o $@'
2130 LD_LIB='-l%'
2131 LD_PATH='-L'
2132 HOSTCC_C='-c'
2133 HOSTCC_O='-o $@'
2134 HOSTLD_O='-o $@'
2135
2136 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
2137 host_libs='-lm'
2138 host_cflags_filter=echo
2139 host_ldflags_filter=echo
2140
2141 target_path='$(CURDIR)'
2142
2143 # since the object filename is not given with the -MM flag, the compiler
2144 # is only able to print the basename, and we must add the path ourselves
2145 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2146 DEPFLAGS='-MM'
2147
2148 # find source path
2149 if test -f configure; then
2150     source_path=.
2151 else
2152     source_path=$(cd $(dirname "$0"); pwd)
2153     echo "$source_path" | grep -q '[[:blank:]]' &&
2154         die "Out of tree builds are impossible with whitespace in source path."
2155     test -e "$source_path/config.h" &&
2156         die "Out of tree builds are impossible with config.h in source dir."
2157 fi
2158
2159 for v in "$@"; do
2160     r=${v#*=}
2161     l=${v%"$r"}
2162     r=$(sh_quote "$r")
2163     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2164 done
2165
2166 find_things(){
2167     thing=$1
2168     pattern=$2
2169     file=$source_path/$3
2170     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2171 }
2172
2173 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2174 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2175 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2176 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2177 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2178 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2179 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2180 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2181 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2182 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2183 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2184
2185 ALL_COMPONENTS="
2186     $BSF_LIST
2187     $DECODER_LIST
2188     $DEMUXER_LIST
2189     $ENCODER_LIST
2190     $FILTER_LIST
2191     $HWACCEL_LIST
2192     $INDEV_LIST
2193     $MUXER_LIST
2194     $OUTDEV_LIST
2195     $PARSER_LIST
2196     $PROTOCOL_LIST
2197 "
2198
2199 for n in $COMPONENT_LIST; do
2200     v=$(toupper ${n%s})_LIST
2201     eval enable \$$v
2202     eval ${n}_if_any="\$$v"
2203 done
2204
2205 enable $ARCH_EXT_LIST
2206
2207 die_unknown(){
2208     echo "Unknown option \"$1\"."
2209     echo "See $0 --help for available options."
2210     exit 1
2211 }
2212
2213 show_list() {
2214     suffix=_$1
2215     shift
2216     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
2217     exit 0
2218 }
2219
2220 rand_list(){
2221     IFS=', '
2222     set -- $*
2223     unset IFS
2224     for thing; do
2225         comp=${thing%:*}
2226         prob=${thing#$comp}
2227         prob=${prob#:}
2228         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2229         echo "prob ${prob:-0.5}"
2230         printf '%s\n' $comp
2231     done
2232 }
2233
2234 do_random(){
2235     action=$1
2236     shift
2237     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2238     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2239 }
2240
2241 for opt do
2242     optval="${opt#*=}"
2243     case "$opt" in
2244         --extra-ldflags=*)
2245             add_ldflags $optval
2246         ;;
2247         --extra-libs=*)
2248             add_extralibs $optval
2249         ;;
2250         --disable-devices)
2251             disable $INDEV_LIST $OUTDEV_LIST
2252         ;;
2253         --enable-debug=*)
2254             debuglevel="$optval"
2255         ;;
2256         --disable-programs)
2257             disable $PROGRAM_LIST
2258         ;;
2259         --disable-everything)
2260             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2261         ;;
2262         --disable-all)
2263             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2264             disable $LIBRARY_LIST $PROGRAM_LIST doc
2265         ;;
2266         --enable-random|--disable-random)
2267             action=${opt%%-random}
2268             do_random ${action#--} $COMPONENT_LIST
2269         ;;
2270         --enable-random=*|--disable-random=*)
2271             action=${opt%%-random=*}
2272             do_random ${action#--} $optval
2273         ;;
2274         --enable-*=*|--disable-*=*)
2275             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2276             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2277             eval list=\$$(toupper $thing)_LIST
2278             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2279             list=$(filter "$name" $list)
2280             [ "$list" = "" ] && warn "Option $opt did not match anything"
2281             $action $list
2282         ;;
2283         --enable-?*|--disable-?*)
2284             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2285             if is_in $option $COMPONENT_LIST; then
2286                 test $action = disable && action=unset
2287                 eval $action \$$(toupper ${option%s})_LIST
2288             elif is_in $option $CMDLINE_SELECT; then
2289                 $action $option
2290             else
2291                 die_unknown $opt
2292             fi
2293         ;;
2294         --list-*)
2295             NAME="${opt#--list-}"
2296             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2297             NAME=${NAME%s}
2298             eval show_list $NAME \$$(toupper $NAME)_LIST
2299         ;;
2300         --help|-h) show_help
2301         ;;
2302         --fatal-warnings) enable fatal_warnings
2303         ;;
2304         *)
2305             optname="${opt%%=*}"
2306             optname="${optname#--}"
2307             optname=$(echo "$optname" | sed 's/-/_/g')
2308             if is_in $optname $CMDLINE_SET; then
2309                 eval $optname='$optval'
2310             elif is_in $optname $CMDLINE_APPEND; then
2311                 append $optname "$optval"
2312             else
2313                 die_unknown $opt
2314             fi
2315         ;;
2316     esac
2317 done
2318
2319 disabled logging && logfile=/dev/null
2320
2321 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2322 set >> $logfile
2323
2324 test -n "$cross_prefix" && enable cross_compile
2325
2326 if enabled cross_compile; then
2327     test -n "$arch" && test -n "$target_os" ||
2328         die "Must specify target arch and OS when cross-compiling"
2329 fi
2330
2331 ar_default="${cross_prefix}${ar_default}"
2332 cc_default="${cross_prefix}${cc_default}"
2333 cxx_default="${cross_prefix}${cxx_default}"
2334 nm_default="${cross_prefix}${nm_default}"
2335 pkg_config_default="${cross_prefix}${pkg_config_default}"
2336 ranlib="${cross_prefix}${ranlib}"
2337 strip_default="${cross_prefix}${strip_default}"
2338
2339 sysinclude_default="${sysroot}/usr/include"
2340
2341 case "$toolchain" in
2342     clang-asan)
2343         cc_default="clang"
2344         add_cflags  -faddress-sanitizer
2345         add_ldflags -faddress-sanitizer
2346     ;;
2347     clang-tsan)
2348         cc_default="clang"
2349         add_cflags  -fthread-sanitizer
2350         add_ldflags -fthread-sanitizer
2351     ;;
2352     msvc)
2353         cc_default="c99wrap cl"
2354         ld_default="c99wrap link"
2355         nm_default="dumpbin -symbols"
2356         ar_default="lib"
2357         target_os_default="win32"
2358     ;;
2359     ?*)
2360         die "Unknown toolchain $toolchain"
2361     ;;
2362 esac
2363
2364 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2365 enabled cross_compile || host_cc_default=$cc
2366 set_default host_cc
2367
2368 if ! $pkg_config --version >/dev/null 2>&1; then
2369     warn "$pkg_config not found, library detection may fail."
2370     pkg_config=false
2371 fi
2372
2373 exesuf() {
2374     case $1 in
2375         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2376     esac
2377 }
2378
2379 EXESUF=$(exesuf $target_os)
2380 HOSTEXESUF=$(exesuf $host_os)
2381
2382 # set temporary file name
2383 : ${TMPDIR:=$TEMPDIR}
2384 : ${TMPDIR:=$TMP}
2385 : ${TMPDIR:=/tmp}
2386
2387 if ! check_cmd mktemp -u XXXXXX; then
2388     # simple replacement for missing mktemp
2389     # NOT SAFE FOR GENERAL USE
2390     mktemp(){
2391         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2392     }
2393 fi
2394
2395 tmpfile(){
2396     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2397         (set -C; exec > $tmp) 2>/dev/null ||
2398         die "Unable to create temporary file in $TMPDIR."
2399     append TMPFILES $tmp
2400     eval $1=$tmp
2401 }
2402
2403 trap 'rm -f -- $TMPFILES' EXIT
2404
2405 tmpfile TMPASM .asm
2406 tmpfile TMPC   .c
2407 tmpfile TMPCPP .cpp
2408 tmpfile TMPE   $EXESUF
2409 tmpfile TMPH   .h
2410 tmpfile TMPO   .o
2411 tmpfile TMPS   .S
2412 tmpfile TMPSH  .sh
2413 tmpfile TMPV   .ver
2414
2415 unset -f mktemp
2416
2417 chmod +x $TMPE
2418
2419 # make sure we can execute files in $TMPDIR
2420 cat > $TMPSH 2>> $logfile <<EOF
2421 #! /bin/sh
2422 EOF
2423 chmod +x $TMPSH >> $logfile 2>&1
2424 if ! $TMPSH >> $logfile 2>&1; then
2425     cat <<EOF
2426 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2427 variable to another directory and make sure that it is not mounted noexec.
2428 EOF
2429     die "Sanity test failed."
2430 fi
2431
2432 ccc_flags(){
2433     for flag; do
2434         case $flag in
2435             -std=c99)           echo -c99                       ;;
2436             -mcpu=*)            echo -arch ${flag#*=}           ;;
2437             -mieee)             echo -ieee                      ;;
2438             -O*|-fast)          echo $flag                      ;;
2439             -fno-math-errno)    echo -assume nomath_errno       ;;
2440             -g)                 echo -g3                        ;;
2441             -Wall)              echo -msg_enable level2         ;;
2442             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2443             -Wl,*)              echo $flag                      ;;
2444             -f*|-W*)                                            ;;
2445             *)                  echo $flag                      ;;
2446         esac
2447    done
2448 }
2449
2450 msvc_flags(){
2451     for flag; do
2452         case $flag in
2453             -fomit-frame-pointer) echo -Oy ;;
2454             -g)                   echo -Z7 ;;
2455             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2456                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2457                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2458                                        -wd4554 \
2459                                        -wd4996 -wd4273 ;;
2460             -std=c99)             ;;
2461             -fno-math-errno)      ;;
2462             -fno-common)          ;;
2463             -fno-signed-zeros)    ;;
2464             -fPIC)                ;;
2465             -lz)                  echo zlib.lib ;;
2466             -lavifil32)           echo vfw32.lib ;;
2467             -lavicap32)           echo vfw32.lib user32.lib ;;
2468             -l*)                  echo ${flag#-l}.lib ;;
2469             *)                    echo $flag ;;
2470         esac
2471     done
2472 }
2473
2474 pgi_flags(){
2475     for flag; do
2476         case $flag in
2477             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2478             -fomit-frame-pointer) echo -Mnoframe ;;
2479             -g)                   echo -gopt ;;
2480             *)                    echo $flag ;;
2481         esac
2482     done
2483 }
2484
2485 suncc_flags(){
2486     for flag; do
2487         case $flag in
2488             -march=*|-mcpu=*)
2489                 case "${flag#*=}" in
2490                     native)                   echo -xtarget=native       ;;
2491                     v9|niagara)               echo -xarch=sparc          ;;
2492                     ultrasparc)               echo -xarch=sparcvis       ;;
2493                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2494                     i586|pentium)             echo -xchip=pentium        ;;
2495                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2496                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2497                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2498                     pentium4*)          echo -xtarget=pentium4           ;;
2499                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2500                     *-sse3)             echo -xarch=sse3                 ;;
2501                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2502                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2503                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2504                     amdfam10|barcelona)       echo -xtarget=barcelona    ;;
2505                     bdver*)                   echo -xarch=avx            ;;
2506                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2507                     k8|opteron|athlon64|athlon-fx)
2508                                               echo -xarch=sse2a          ;;
2509                     athlon*)                  echo -xarch=pentium_proa   ;;
2510                 esac
2511                 ;;
2512             -std=c99)             echo -xc99              ;;
2513             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2514             -fPIC)                echo -KPIC -xcode=pic32 ;;
2515             -W*,*)                echo $flag              ;;
2516             -f*-*|-W*|-mimpure-text)                      ;;
2517             -shared)              echo -G                 ;;
2518             *)                    echo $flag              ;;
2519         esac
2520     done
2521 }
2522
2523 tms470_flags(){
2524     for flag; do
2525         case $flag in
2526             -march=*|-mcpu=*)
2527                 case "${flag#*=}" in
2528                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2529                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2530                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2531                     armv6*|arm11*)          echo -mv=6   ;;
2532                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2533                                             echo -mv=5e  ;;
2534                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2535                 esac
2536                 ;;
2537             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2538             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2539             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2540             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2541             -msoft-float)   echo --float_support=vfplib       ;;
2542             -O[0-3]|-mf=*)  echo $flag                        ;;
2543             -g)             echo -g -mn                       ;;
2544             -pds=*)         echo $flag                        ;;
2545             -D*|-I*)        echo $flag                        ;;
2546             --gcc|--abi=*)  echo $flag                        ;;
2547             -me)            echo $flag                        ;;
2548         esac
2549     done
2550 }
2551
2552 probe_cc(){
2553     pfx=$1
2554     _cc=$2
2555
2556     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2557     unset _ld_o _ldflags _ld_lib _ld_path
2558     unset _depflags _DEPCMD _DEPFLAGS
2559     _flags_filter=echo
2560
2561     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2562         _type=llvm_gcc
2563         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2564         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2565         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2566         _cflags_speed='-O3'
2567         _cflags_size='-Os'
2568     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2569         _type=gcc
2570         gcc_version=$($_cc --version | head -n1)
2571         gcc_basever=$($_cc -dumpversion)
2572         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2573         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2574         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2575         if ! $_cc -dumpversion | grep -q '^2\.'; then
2576             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2577         fi
2578         _cflags_speed='-O3'
2579         _cflags_size='-Os'
2580     elif $_cc --version 2>/dev/null | grep -q Intel; then
2581         _type=icc
2582         _ident=$($_cc --version | head -n1)
2583         _depflags='-MMD'
2584         _cflags_speed='-O3'
2585         _cflags_size='-Os'
2586         _cflags_noopt='-O1'
2587     elif $_cc -v 2>&1 | grep -q xlc; then
2588         _type=xlc
2589         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2590         _cflags_speed='-O5'
2591         _cflags_size='-O5 -qcompact'
2592     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2593         _type=ccc
2594         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2595         _DEPFLAGS='-M'
2596         _cflags_speed='-fast'
2597         _cflags_size='-O1'
2598         _flags_filter=ccc_flags
2599     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2600         test -d "$sysroot" || die "No valid sysroot specified."
2601         _type=armcc
2602         _ident=$($_cc --vsn | head -n1)
2603         armcc_conf="$PWD/armcc.conf"
2604         $_cc --arm_linux_configure                 \
2605              --arm_linux_config_file="$armcc_conf" \
2606              --configure_sysroot="$sysroot"        \
2607              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2608              die "Error creating armcc configuration file."
2609         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2610         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2611         as_default="${cross_prefix}gcc"
2612         _depflags='-MMD'
2613         _cflags_speed='-O3'
2614         _cflags_size='-Os'
2615     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2616         _type=tms470
2617         _ident=$($_cc -version | head -n1 | tr -s ' ')
2618         _flags='--gcc --abi=eabi -me'
2619         _cc_e='-ppl -fe=$@'
2620         _cc_o='-fe=$@'
2621         _depflags='-ppa -ppd=$(@:.o=.d)'
2622         _cflags_speed='-O3 -mf=5'
2623         _cflags_size='-O3 -mf=2'
2624         _flags_filter=tms470_flags
2625     elif $_cc -v 2>&1 | grep -q clang; then
2626         _type=clang
2627         _ident=$($_cc --version | head -n1)
2628         _depflags='-MMD'
2629         _cflags_speed='-O3'
2630         _cflags_size='-Os'
2631     elif $_cc -V 2>&1 | grep -q Sun; then
2632         _type=suncc
2633         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2634         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2635         _DEPFLAGS='-xM1 -xc99'
2636         _ldflags='-std=c99'
2637         _cflags_speed='-O5'
2638         _cflags_size='-O5 -xspace'
2639         _flags_filter=suncc_flags
2640     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2641         _type=pathscale
2642         _ident=$($_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'
2647     elif $_cc -v 2>&1 | grep -q Open64; then
2648         _type=open64
2649         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2650         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2651         _cflags_speed='-O2'
2652         _cflags_size='-Os'
2653         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2654     elif $_cc -V 2>&1 | grep -q Portland; then
2655         _type=pgi
2656         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2657         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2658         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2659         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2660         _cflags_noopt="-O1"
2661         _flags_filter=pgi_flags
2662     elif $_cc 2>&1 | grep -q Microsoft; then
2663         _type=msvc
2664         _ident=$($cc 2>&1 | head -n1)
2665         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2666         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2667         _cflags_speed="-O2"
2668         _cflags_size="-O1"
2669         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2670         if $_cc 2>&1 | grep -q Linker; then
2671             _ld_o='-out $@'
2672         else
2673             _ld_o='-Fe$@'
2674         fi
2675         _cc_o='-Fo $@'
2676         _cc_e='-P -Fi $@'
2677         _flags_filter=msvc_flags
2678         _ld_lib='lib%.a'
2679         _ld_path='-libpath:'
2680         _flags='-nologo'
2681         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2682         if [ $pfx = hostcc ]; then
2683             append _cflags -Dsnprintf=_snprintf
2684         fi
2685         disable stripping
2686     fi
2687
2688     eval ${pfx}_type=\$_type
2689     eval ${pfx}_ident=\$_ident
2690 }
2691
2692 set_ccvars(){
2693     eval ${1}_C=\${_cc_c-\${${1}_C}}
2694     eval ${1}_E=\${_cc_e-\${${1}_E}}
2695     eval ${1}_O=\${_cc_o-\${${1}_O}}
2696
2697     if [ -n "$_depflags" ]; then
2698         eval ${1}_DEPFLAGS=\$_depflags
2699     else
2700         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2701         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2702         eval DEP${1}FLAGS=\$_flags
2703     fi
2704 }
2705
2706 probe_cc cc "$cc"
2707 cflags_filter=$_flags_filter
2708 cflags_speed=$_cflags_speed
2709 cflags_size=$_cflags_size
2710 cflags_noopt=$_cflags_noopt
2711 add_cflags $_flags $_cflags
2712 cc_ldflags=$_ldflags
2713 set_ccvars CC
2714
2715 probe_cc hostcc "$host_cc"
2716 host_cflags_filter=$_flags_filter
2717 add_host_cflags  $_flags $_cflags
2718 set_ccvars HOSTCC
2719
2720 test -n "$cc_type" && enable $cc_type ||
2721     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2722
2723 : ${as_default:=$cc}
2724 : ${dep_cc_default:=$cc}
2725 : ${ld_default:=$cc}
2726 : ${host_ld_default:=$host_cc}
2727 set_default ar as dep_cc ld host_ld
2728
2729 probe_cc as "$as"
2730 asflags_filter=$_flags_filter
2731 add_asflags $_flags $_cflags
2732 set_ccvars AS
2733
2734 probe_cc ld "$ld"
2735 ldflags_filter=$_flags_filter
2736 add_ldflags $_flags $_ldflags
2737 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2738 LD_O=${_ld_o-$LD_O}
2739 LD_LIB=${_ld_lib-$LD_LIB}
2740 LD_PATH=${_ld_path-$LD_PATH}
2741
2742 probe_cc hostld "$host_ld"
2743 host_ldflags_filter=$_flags_filter
2744 add_host_ldflags $_flags $_ldflags
2745 HOSTLD_O=${_ld_o-$HOSTLD_O}
2746
2747 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2748     probe_cc depcc "$dep_cc"
2749     CCDEP=${_DEPCMD:-$DEPCMD}
2750     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2751     DEPCCFLAGS=$_flags
2752 fi
2753
2754 if $ar 2>&1 | grep -q Microsoft; then
2755     arflags="-nologo"
2756     ar_o='-out:$@'
2757 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2758     arflags="rq"
2759     ar_o='$@'
2760 else
2761     arflags="rc"
2762     ar_o='$@'
2763 fi
2764
2765 add_cflags $extra_cflags
2766 add_cxxflags $extra_cxxflags
2767 add_asflags $extra_cflags
2768
2769 if test -n "$sysroot"; then
2770     case "$cc_type" in
2771         gcc|llvm_gcc|clang)
2772             add_cppflags --sysroot="$sysroot"
2773             add_ldflags --sysroot="$sysroot"
2774         ;;
2775         tms470)
2776             add_cppflags -I"$sysinclude"
2777             add_ldflags  --sysroot="$sysroot"
2778         ;;
2779     esac
2780 fi
2781
2782 if test "$cpu" = host; then
2783     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2784
2785     case "$cc_type" in
2786         gcc|llvm_gcc)
2787             check_native(){
2788                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2789                 sed -n "/cc1.*$1=/{
2790                             s/.*$1=\\([^ ]*\\).*/\\1/
2791                             p
2792                             q
2793                         }" $TMPE
2794             }
2795             cpu=$(check_native -march || check_native -mcpu)
2796         ;;
2797     esac
2798
2799     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2800 fi
2801
2802 # Deal with common $arch aliases
2803 case "$arch" in
2804     aarch64|arm64)
2805         arch="aarch64"
2806     ;;
2807     arm*|iPad*)
2808         arch="arm"
2809     ;;
2810     mips*|IP*)
2811         arch="mips"
2812     ;;
2813     parisc*|hppa*)
2814         arch="parisc"
2815     ;;
2816     "Power Macintosh"|ppc*|powerpc*)
2817         arch="ppc"
2818     ;;
2819     s390|s390x)
2820         arch="s390"
2821     ;;
2822     sh4|sh)
2823         arch="sh4"
2824     ;;
2825     sun4u|sparc*)
2826         arch="sparc"
2827     ;;
2828     tilegx|tile-gx)
2829         arch="tilegx"
2830     ;;
2831     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2832         arch="x86"
2833     ;;
2834 esac
2835
2836 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2837 enable $arch
2838
2839 # Add processor-specific flags
2840 if enabled aarch64; then
2841
2842     case $cpu in
2843         armv*)
2844             cpuflags="-march=$cpu"
2845         ;;
2846         *)
2847             cpuflags="-mcpu=$cpu"
2848         ;;
2849     esac
2850
2851 elif enabled alpha; then
2852
2853     cpuflags="-mcpu=$cpu"
2854
2855 elif enabled arm; then
2856
2857     check_arm_arch() {
2858         check_cpp_condition stddef.h \
2859             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2860             $cpuflags
2861     }
2862
2863     probe_arm_arch() {
2864         if   check_arm_arch 4;        then echo armv4;
2865         elif check_arm_arch 4T;       then echo armv4t;
2866         elif check_arm_arch 5;        then echo armv5;
2867         elif check_arm_arch 5E;       then echo armv5e;
2868         elif check_arm_arch 5T;       then echo armv5t;
2869         elif check_arm_arch 5TE;      then echo armv5te;
2870         elif check_arm_arch 5TEJ;     then echo armv5te;
2871         elif check_arm_arch 6;        then echo armv6;
2872         elif check_arm_arch 6J;       then echo armv6j;
2873         elif check_arm_arch 6K;       then echo armv6k;
2874         elif check_arm_arch 6Z;       then echo armv6z;
2875         elif check_arm_arch 6ZK;      then echo armv6zk;
2876         elif check_arm_arch 6T2;      then echo armv6t2;
2877         elif check_arm_arch 7;        then echo armv7;
2878         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2879         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2880         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2881         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2882         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2883         fi
2884     }
2885
2886     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2887
2888     case $cpu in
2889         armv*)
2890             cpuflags="-march=$cpu"
2891             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2892         ;;
2893         *)
2894             cpuflags="-mcpu=$cpu"
2895             case $cpu in
2896                 cortex-a*)                               subarch=armv7a  ;;
2897                 cortex-r*)                               subarch=armv7r  ;;
2898                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2899                 arm11*)                                  subarch=armv6   ;;
2900                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2901                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2902                 *)                             subarch=$(probe_arm_arch) ;;
2903             esac
2904         ;;
2905     esac
2906
2907     case "$subarch" in
2908         armv5t*)    enable fast_clz                ;;
2909         armv[6-8]*) enable fast_clz fast_unaligned ;;
2910     esac
2911
2912 elif enabled avr32; then
2913
2914     case $cpu in
2915         ap7[02]0[0-2])
2916             subarch="avr32_ap"
2917             cpuflags="-mpart=$cpu"
2918         ;;
2919         ap)
2920             subarch="avr32_ap"
2921             cpuflags="-march=$cpu"
2922         ;;
2923         uc3[ab]*)
2924             subarch="avr32_uc"
2925             cpuflags="-mcpu=$cpu"
2926         ;;
2927         uc)
2928             subarch="avr32_uc"
2929             cpuflags="-march=$cpu"
2930         ;;
2931     esac
2932
2933 elif enabled bfin; then
2934
2935     cpuflags="-mcpu=$cpu"
2936
2937 elif enabled mips; then
2938
2939     cpuflags="-march=$cpu"
2940
2941     case $cpu in
2942         24kc)
2943             disable mipsfpu
2944             disable mipsdspr1
2945             disable mipsdspr2
2946         ;;
2947         24kf*)
2948             disable mipsdspr1
2949             disable mipsdspr2
2950         ;;
2951         24kec|34kc|1004kc)
2952             disable mipsfpu
2953             disable mipsdspr2
2954         ;;
2955         24kef*|34kf*|1004kf*)
2956             disable mipsdspr2
2957         ;;
2958         74kc)
2959             disable mipsfpu
2960         ;;
2961     esac
2962
2963 elif enabled ppc; then
2964
2965     case $(tolower $cpu) in
2966         601|ppc601|powerpc601)
2967             cpuflags="-mcpu=601"
2968             disable altivec
2969         ;;
2970         603*|ppc603*|powerpc603*)
2971             cpuflags="-mcpu=603"
2972             disable altivec
2973         ;;
2974         604*|ppc604*|powerpc604*)
2975             cpuflags="-mcpu=604"
2976             disable altivec
2977         ;;
2978         g3|75*|ppc75*|powerpc75*)
2979             cpuflags="-mcpu=750"
2980             disable altivec
2981         ;;
2982         g4|745*|ppc745*|powerpc745*)
2983             cpuflags="-mcpu=7450"
2984         ;;
2985         74*|ppc74*|powerpc74*)
2986             cpuflags="-mcpu=7400"
2987         ;;
2988         g5|970|ppc970|powerpc970)
2989             cpuflags="-mcpu=970"
2990         ;;
2991         power[3-7]*)
2992             cpuflags="-mcpu=$cpu"
2993         ;;
2994         cell)
2995             cpuflags="-mcpu=cell"
2996             enable ldbrx
2997         ;;
2998         e500mc)
2999             cpuflags="-mcpu=e500mc"
3000             disable altivec
3001         ;;
3002         e500v2)
3003             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3004             disable altivec
3005         ;;
3006         e500)
3007             cpuflags="-mcpu=8540 -mhard-float"
3008             disable altivec
3009         ;;
3010     esac
3011
3012 elif enabled sparc; then
3013
3014     case $cpu in
3015         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3016             cpuflags="-mcpu=$cpu"
3017             disable vis
3018         ;;
3019         ultrasparc*|niagara[234])
3020             cpuflags="-mcpu=$cpu"
3021         ;;
3022     esac
3023
3024 elif enabled x86; then
3025
3026     case $cpu in
3027         i[345]86|pentium)
3028             cpuflags="-march=$cpu"
3029             disable mmx
3030         ;;
3031         # targets that do NOT support conditional mov (cmov)
3032         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3033             cpuflags="-march=$cpu"
3034             disable cmov
3035         ;;
3036         # targets that do support conditional mov (cmov)
3037         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3038             cpuflags="-march=$cpu"
3039             enable cmov
3040             enable fast_cmov
3041         ;;
3042         # targets that do support conditional mov but on which it's slow
3043         pentium4|pentium4m|prescott|nocona)
3044             cpuflags="-march=$cpu"
3045             enable cmov
3046             disable fast_cmov
3047         ;;
3048     esac
3049
3050 fi
3051
3052 if [ "$cpu" != generic ]; then
3053     add_cflags  $cpuflags
3054     add_asflags $cpuflags
3055 fi
3056
3057 # compiler sanity check
3058 check_exec <<EOF
3059 int main(void){ return 0; }
3060 EOF
3061 if test "$?" != 0; then
3062     echo "$cc is unable to create an executable file."
3063     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3064         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3065         echo "Only do this if you know what cross compiling means."
3066     fi
3067     die "C compiler test failed."
3068 fi
3069
3070 add_cppflags -D_ISOC99_SOURCE
3071 add_cxxflags -D__STDC_CONSTANT_MACROS
3072 check_cflags -std=c99
3073 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3074 #include <stdlib.h>
3075 EOF
3076 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3077 #include <stdlib.h>
3078 EOF
3079
3080 check_host_cflags -std=c99
3081 check_host_cflags -Wall
3082
3083 check_64bit(){
3084     arch32=$1
3085     arch64=$2
3086     expr=$3
3087     check_code cc "" "int test[2*($expr) - 1]" &&
3088         subarch=$arch64 || subarch=$arch32
3089 }
3090
3091 case "$arch" in
3092     aarch64|alpha|ia64)
3093         spic=$shared
3094     ;;
3095     mips)
3096         check_64bit mips mips64 '_MIPS_SIM > 1'
3097         spic=$shared
3098     ;;
3099     parisc)
3100         check_64bit parisc parisc64 'sizeof(void *) > 4'
3101         spic=$shared
3102     ;;
3103     ppc)
3104         check_64bit ppc ppc64 'sizeof(void *) > 4'
3105         spic=$shared
3106     ;;
3107     sparc)
3108         check_64bit sparc sparc64 'sizeof(void *) > 4'
3109         spic=$shared
3110     ;;
3111     x86)
3112         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3113         if test "$subarch" = "x86_64"; then
3114             spic=$shared
3115         fi
3116     ;;
3117     ppc)
3118         check_cc <<EOF && subarch="ppc64"
3119         int test[(int)sizeof(char*) - 7];
3120 EOF
3121     ;;
3122 esac
3123
3124 enable $subarch
3125 enabled spic && enable pic
3126
3127 # OS specific
3128 case $target_os in
3129     haiku)
3130         prefix_default="/boot/common"
3131         network_extralibs="-lnetwork"
3132         host_libs=
3133         ;;
3134     sunos)
3135         FFSERVERLDFLAGS=""
3136         SHFLAGS='-shared -Wl,-h,$$(@F)'
3137         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3138         network_extralibs="-lsocket -lnsl"
3139         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3140         # When using suncc to build, the Solaris linker will mark
3141         # an executable with each instruction set encountered by
3142         # the Solaris assembler.  As our libraries contain their own
3143         # guards for processor-specific code, instead suppress
3144         # generation of the HWCAPS ELF section on Solaris x86 only.
3145         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3146         nm_default='nm -P -g'
3147         ;;
3148     netbsd)
3149         disable symver
3150         oss_indev_extralibs="-lossaudio"
3151         oss_outdev_extralibs="-lossaudio"
3152         enabled gcc || check_ldflags -Wl,-zmuldefs
3153         ;;
3154     openbsd|bitrig)
3155         # On OpenBSD 4.5. the compiler does not use PIC unless
3156         # explicitly using -fPIC. FFmpeg builds fine without PIC,
3157         # however the generated executable will not do anything
3158         # (simply quits with exit-code 1, no crash, no output).
3159         # Thus explicitly enable PIC here.
3160         enable pic
3161         disable symver
3162         SHFLAGS='-shared'
3163         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
3164         SLIB_INSTALL_LINKS=
3165         oss_indev_extralibs="-lossaudio"
3166         oss_outdev_extralibs="-lossaudio"
3167         ;;
3168     dragonfly)
3169         disable symver
3170         ;;
3171     freebsd)
3172         ;;
3173     bsd/os)
3174         add_extralibs -lpoll -lgnugetopt
3175         strip="strip -d"
3176         ;;
3177     darwin)
3178         gas="gas-preprocessor.pl $cc"
3179         enabled ppc && add_asflags -force_cpusubtype_ALL
3180         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3181         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3182         strip="${strip} -x"
3183         add_ldflags -Wl,-dynamic,-search_paths_first
3184         SLIBSUF=".dylib"
3185         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3186         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3187         FFSERVERLDFLAGS=-Wl,-bind_at_load
3188         objformat="macho"
3189         enabled x86_64 && objformat="macho64"
3190         enabled_any pic shared ||
3191             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3192         ;;
3193     mingw32*)
3194         if test $target_os = "mingw32ce"; then
3195             disable network
3196         else
3197             target_os=mingw32
3198         fi
3199         LIBTARGET=i386
3200         if enabled x86_64; then
3201             LIBTARGET="i386:x86-64"
3202         elif enabled arm; then
3203             LIBTARGET=arm-wince
3204         fi
3205         shlibdir_default="$bindir_default"
3206         SLIBPREF=""
3207         SLIBSUF=".dll"
3208         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3209         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3210         dlltool="${cross_prefix}dlltool"
3211         if check_cmd lib.exe -list; then
3212             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3213             if enabled x86_64; then
3214                 LIBTARGET=x64
3215             fi
3216         elif check_cmd $dlltool --version; then
3217             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3218         fi
3219         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3220         SLIB_INSTALL_LINKS=
3221         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3222         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3223         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3224         objformat="win32"
3225         ranlib=:
3226         enable dos_paths
3227         add_cppflags -U__STRICT_ANSI__
3228         ;;
3229     win32|win64)
3230         if enabled shared; then
3231             # Link to the import library instead of the normal static library
3232             # for shared libs.
3233             LD_LIB='%.lib'
3234             # Cannot build shared and static libraries at the same time with
3235             # MSVC.
3236             disable static
3237         fi
3238         shlibdir_default="$bindir_default"
3239         SLIBPREF=""
3240         SLIBSUF=".dll"
3241         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3242         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3243         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3244         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3245         SLIB_INSTALL_LINKS=
3246         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3247         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3248         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3249         objformat="win32"
3250         ranlib=:
3251         enable dos_paths
3252         ;;
3253     cygwin*)
3254         target_os=cygwin
3255         shlibdir_default="$bindir_default"
3256         SLIBPREF="cyg"
3257         SLIBSUF=".dll"
3258         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3259         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3260         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3261         SLIB_INSTALL_LINKS=
3262         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3263         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3264         objformat="win32"
3265         enable dos_paths
3266         ;;
3267     *-dos|freedos|opendos)
3268         network_extralibs="-lsocket"
3269         objformat="coff"
3270         enable dos_paths
3271         add_cppflags -U__STRICT_ANSI__
3272         ;;
3273     linux)
3274         enable dv1394
3275         ;;
3276     irix*)
3277         target_os=irix
3278         ranlib="echo ignoring ranlib"
3279         ;;
3280     os/2*)
3281         strip="lxlite -CS"
3282         ln_s="cp -f"
3283         objformat="aout"
3284         add_cppflags -D_GNU_SOURCE
3285         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3286         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3287         FFSERVERLDFLAGS=""
3288         LIBSUF="_s.a"
3289         SLIBPREF=""
3290         SLIBSUF=".dll"
3291         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3292         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3293         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3294             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3295             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3296             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3297             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3298             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3299         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3300             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3301         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3302         enable dos_paths
3303         enable_weak os2threads
3304         ;;
3305     gnu/kfreebsd)
3306         add_cppflags -D_BSD_SOURCE
3307         ;;
3308     gnu)
3309         ;;
3310     qnx)
3311         add_cppflags -D_QNX_SOURCE
3312         network_extralibs="-lsocket"
3313         ;;
3314     symbian)
3315         SLIBSUF=".dll"
3316         enable dos_paths
3317         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3318         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3319         add_ldflags -Wl,--target1-abs,--no-undefined \
3320                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3321                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3322         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3323                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3324                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3325         ;;
3326     osf1)
3327         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3328         FFSERVERLDFLAGS=
3329         ;;
3330     minix)
3331         ;;
3332     plan9)
3333         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3334                      -D_REENTRANT_SOURCE        \
3335                      -D_RESEARCH_SOURCE         \
3336                      -DFD_SETSIZE=96            \
3337                      -DHAVE_SOCK_OPTS
3338         add_compat strtod.o strtod=avpriv_strtod
3339         network_extralibs='-lbsd'
3340         exeobjs=compat/plan9/main.o
3341         disable ffserver
3342         ln_s='ln -s -f'
3343         cp_f='cp'
3344         ;;
3345     none)
3346         ;;
3347     *)
3348         die "Unknown OS '$target_os'."
3349         ;;
3350 esac
3351
3352 # determine libc flavour
3353
3354 if check_cpp_condition features.h "defined __UCLIBC__"; then
3355     libc_type=uclibc
3356     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3357 elif check_cpp_condition features.h "defined __GLIBC__"; then
3358     libc_type=glibc
3359     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3360 elif check_header _mingw.h; then
3361     libc_type=mingw
3362     check_cpp_condition _mingw.h \
3363         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3364             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3365         die "ERROR: MinGW runtime version must be >= 3.15."
3366     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3367             __MINGW64_VERSION_MAJOR < 3"; then
3368         add_compat msvcrt/snprintf.o
3369         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3370     fi
3371 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3372     libc_type=newlib
3373     add_cppflags -U__STRICT_ANSI__
3374 elif check_func_headers stdlib.h _get_doserrno; then
3375     libc_type=msvcrt
3376     add_compat strtod.o strtod=avpriv_strtod
3377     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3378                                  _snprintf=avpriv_snprintf  \
3379                                  vsnprintf=avpriv_vsnprintf
3380 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3381     libc_type=klibc
3382 fi
3383
3384 test -n "$libc_type" && enable $libc_type
3385
3386 # hacks for compiler/libc/os combinations
3387
3388 if enabled_all tms470 glibc; then
3389     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3390     add_cppflags -D__USER_LABEL_PREFIX__=
3391     add_cppflags -D__builtin_memset=memset
3392     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3393     add_cflags   -pds=48    # incompatible redefinition of macro
3394 fi
3395
3396 if enabled_all ccc glibc; then
3397     add_ldflags -Wl,-z,now  # calls to libots crash without this
3398 fi
3399
3400 esc(){
3401     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3402 }
3403
3404 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3405
3406 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3407
3408 set_default $PATHS_LIST
3409 set_default nm
3410
3411 # we need to build at least one lib type
3412 if ! enabled_any static shared; then
3413     cat <<EOF
3414 At least one library type must be built.
3415 Specify --enable-static to build the static libraries or --enable-shared to
3416 build the shared libraries as well. To only build the shared libraries specify
3417 --disable-static in addition to --enable-shared.
3418 EOF
3419     exit 1;
3420 fi
3421
3422 die_license_disabled() {
3423     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3424 }
3425
3426 die_license_disabled_gpl() {
3427     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3428 }
3429
3430 die_license_disabled gpl libcdio
3431 die_license_disabled gpl libutvideo
3432 die_license_disabled gpl libx264
3433 die_license_disabled gpl libxavs
3434 die_license_disabled gpl libxvid
3435 die_license_disabled gpl x11grab
3436
3437 die_license_disabled nonfree libaacplus
3438 die_license_disabled nonfree libfaac
3439 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3440 enabled gpl && die_license_disabled_gpl nonfree openssl
3441
3442 die_license_disabled version3 libopencore_amrnb
3443 die_license_disabled version3 libopencore_amrwb
3444 die_license_disabled version3 libvo_aacenc
3445 die_license_disabled version3 libvo_amrwbenc
3446
3447 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3448
3449 disabled optimizations || check_cflags -fomit-frame-pointer
3450
3451 enable_pic() {
3452     enable pic
3453     add_cppflags -DPIC
3454     add_cflags   -fPIC
3455     add_asflags  -fPIC
3456 }
3457
3458 enabled pic && enable_pic
3459
3460 check_cc <<EOF || die "Symbol mangling check failed."
3461 int ff_extern;
3462 EOF
3463 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3464 extern_prefix=${sym%%ff_extern*}
3465
3466 check_cc <<EOF && enable_weak inline_asm
3467 void foo(void) { __asm__ volatile ("" ::); }
3468 EOF
3469
3470 _restrict=
3471 for restrict_keyword in restrict __restrict__ __restrict; do
3472     check_cc <<EOF && _restrict=$restrict_keyword && break
3473 void foo(char * $restrict_keyword p);
3474 EOF
3475 done
3476
3477 check_cc <<EOF && enable attribute_packed
3478 struct { int x; } __attribute__((packed)) x;
3479 EOF
3480
3481 check_cc <<EOF && enable attribute_may_alias
3482 union { int x; } __attribute__((may_alias)) x;
3483 EOF
3484
3485 check_cc <<EOF || die "endian test failed"
3486 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3487 EOF
3488 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3489
3490 if enabled alpha; then
3491
3492     check_cflags -mieee
3493
3494 elif enabled arm; then
3495
3496     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3497 float func(float a, float b){ return a+b; }
3498 EOF
3499
3500     enabled thumb && check_cflags -mthumb || check_cflags -marm
3501     nogas=die
3502
3503     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3504         enable vfp_args
3505     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3506         case "${cross_prefix:-$cc}" in
3507             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3508             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3509 __asm__ (".eabi_attribute 28, 1");
3510 int main(void) { return 0; }
3511 EOF
3512         esac
3513         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3514     fi
3515
3516     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3517     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3518     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3519     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3520     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3521     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3522
3523     [ $target_os = linux ] ||
3524         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3525             $ARCH_EXT_LIST_ARM
3526
3527     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3528     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3529
3530     enabled_all armv6t2 shared !pic && enable_pic
3531
3532 elif enabled mips; then
3533
3534     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3535     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3536      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3537     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3538      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3539     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3540      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3541     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3542      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3543
3544 elif enabled parisc; then
3545
3546     if enabled gcc; then
3547         case $($cc -dumpversion) in
3548             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3549         esac
3550     fi
3551
3552 elif enabled ppc; then
3553
3554     enable local_aligned_8 local_aligned_16
3555
3556     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3557     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3558     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3559     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3560
3561     # AltiVec flags: The FSF version of GCC differs from the Apple version
3562     if enabled altivec; then
3563         nogas=warn
3564         check_cflags -maltivec -mabi=altivec &&
3565         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3566         check_cflags -faltivec
3567
3568         # check if our compiler supports Motorola AltiVec C API
3569         check_cc <<EOF || disable altivec
3570 $inc_altivec_h
3571 int main(void) {
3572     vector signed int v1 = (vector signed int) { 0 };
3573     vector signed int v2 = (vector signed int) { 1 };
3574     v1 = vec_add(v1, v2);
3575     return 0;
3576 }
3577 EOF
3578
3579         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3580     fi
3581
3582 elif enabled sparc; then
3583
3584     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3585
3586 elif enabled x86; then
3587
3588     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3589
3590     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3591
3592     enable local_aligned_8 local_aligned_16
3593
3594     # check whether EBP is available on x86
3595     # As 'i' is stored on the stack, this program will crash
3596     # if the base pointer is used to access it because the
3597     # base pointer is cleared in the inline assembly code.
3598     check_exec_crash <<EOF && enable ebp_available
3599 volatile int i=0;
3600 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3601 return i;
3602 EOF
3603
3604     # check whether EBX is available on x86
3605     check_inline_asm ebx_available '""::"b"(0)' &&
3606         check_inline_asm ebx_available '"":::"%ebx"'
3607
3608     # check whether xmm clobbers are supported
3609     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3610
3611     # check whether binutils is new enough to compile SSSE3/MMXEXT
3612     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3613     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3614
3615     if ! disabled_any asm mmx yasm; then
3616         if check_cmd $yasmexe --version; then
3617             enabled x86_64 && yasm_extra="-m amd64"
3618             yasm_debug="-g dwarf2"
3619         elif check_cmd nasm -v; then
3620             yasmexe=nasm
3621             yasm_debug="-g -F dwarf"
3622             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3623         fi
3624
3625         YASMFLAGS="-f $objformat $yasm_extra"
3626         enabled pic               && append YASMFLAGS "-DPIC"
3627         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3628         case "$objformat" in
3629             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3630         esac
3631
3632         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3633             die "yasm not found, use --disable-yasm for a crippled build"
3634         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3635         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3636         check_yasm "CPU amdnop" && enable cpunop
3637     fi
3638
3639     case "$cpu" in
3640         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3641             disable fast_clz
3642         ;;
3643     esac
3644
3645 fi
3646
3647 if enabled asm; then
3648     as=${gas:=$as}
3649     check_as <<EOF && enable gnu_as || \
3650         $nogas "GNU assembler not found, install gas-preprocessor"
3651 .macro m n
3652 \n: .int 0
3653 .endm
3654 m x
3655 EOF
3656 fi
3657
3658 check_ldflags -Wl,--as-needed
3659
3660 if check_func dlopen; then
3661     ldl=
3662 elif check_func dlopen -ldl; then
3663     ldl=-ldl
3664 fi
3665
3666 if ! disabled network; then
3667     check_type "sys/types.h sys/socket.h" socklen_t
3668     check_type netdb.h "struct addrinfo"
3669     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3670     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3671     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3672     check_type netinet/in.h "struct sockaddr_in6"
3673     check_type poll.h "struct pollfd"
3674     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3675     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3676     check_type netinet/sctp.h "struct sctp_event_subscribe"
3677     check_func getaddrinfo $network_extralibs
3678     check_func getservbyport $network_extralibs
3679     # Prefer arpa/inet.h over winsock2
3680     if check_header arpa/inet.h ; then
3681         check_func closesocket
3682     elif check_header winsock2.h ; then
3683         check_func_headers winsock2.h closesocket -lws2 &&
3684             network_extralibs="-lws2" ||
3685         { check_func_headers winsock2.h closesocket -lws2_32 &&
3686             network_extralibs="-lws2_32"; }
3687         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3688         check_type ws2tcpip.h socklen_t
3689         check_type ws2tcpip.h "struct addrinfo"
3690         check_type ws2tcpip.h "struct group_source_req"
3691         check_type ws2tcpip.h "struct ip_mreq_source"
3692         check_type ws2tcpip.h "struct ipv6_mreq"
3693         check_type winsock2.h "struct pollfd"
3694         check_type ws2tcpip.h "struct sockaddr_in6"
3695         check_type ws2tcpip.h "struct sockaddr_storage"
3696         check_struct winsock2.h "struct sockaddr" sa_len
3697     else
3698         disable network
3699     fi
3700 fi
3701
3702 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3703 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3704
3705 check_func  access
3706 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3707 check_func  fcntl
3708 check_func  fork
3709 check_func  gethrtime
3710 check_func  getopt
3711 check_func  getrusage
3712 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3713 check_func  gettimeofday
3714 check_func  inet_aton $network_extralibs
3715 check_func  isatty
3716 check_func  localtime_r
3717 check_func  ${malloc_prefix}memalign            && enable memalign
3718 check_func  mkstemp
3719 check_func  mmap
3720 check_func  mprotect
3721 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3722 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3723 check_func  setrlimit
3724 check_func  strerror_r
3725 check_func  sched_getaffinity
3726 check_func  sysconf
3727 check_func  sysctl
3728 check_func  usleep
3729 check_func_headers conio.h kbhit
3730 check_func_headers windows.h PeekNamedPipe
3731 check_func_headers io.h setmode
3732 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3733 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3734 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3735 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3736 check_func_headers windows.h GetProcessAffinityMask
3737 check_func_headers windows.h GetProcessTimes
3738 check_func_headers windows.h GetSystemTimeAsFileTime
3739 check_func_headers windows.h MapViewOfFile
3740 check_func_headers windows.h SetConsoleTextAttribute
3741 check_func_headers windows.h Sleep
3742 check_func_headers windows.h VirtualAlloc
3743 check_func_headers glob.h glob
3744
3745 check_header direct.h
3746 check_header dlfcn.h
3747 check_header dxva.h
3748 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3749 check_header io.h
3750 check_header libcrystalhd/libcrystalhd_if.h
3751 check_header malloc.h
3752 check_header poll.h
3753 check_header sys/mman.h
3754 check_header sys/param.h
3755 check_header sys/resource.h
3756 check_header sys/select.h
3757 check_header sys/time.h
3758 check_header termios.h
3759 check_header unistd.h
3760 check_header vdpau/vdpau.h
3761 check_header vdpau/vdpau_x11.h
3762 check_header windows.h
3763 check_header X11/extensions/XvMClib.h
3764 check_header asm/types.h
3765
3766 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3767 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3768
3769 # check for VDA header
3770 if ! disabled vda && ! enabled ppc; then
3771     if check_header VideoDecodeAcceleration/VDADecoder.h; then
3772         enable vda
3773         add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3774     fi
3775 fi
3776
3777 if ! disabled w32threads && ! enabled pthreads; then
3778     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3779 fi
3780
3781 # check for some common methods of building with pthread support
3782 # do this before the optional library checks as some of them require pthreads
3783 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3784     enable pthreads
3785     if check_func pthread_create; then
3786         :
3787     elif check_func pthread_create -pthread; then
3788         add_cflags -pthread
3789         add_extralibs -pthread
3790     elif check_func pthread_create -pthreads; then
3791         add_cflags -pthreads
3792         add_extralibs -pthreads
3793     elif check_func pthread_create -lpthreadGC2; then
3794         add_extralibs -lpthreadGC2
3795     elif ! check_lib pthread.h pthread_create -lpthread; then
3796         disable pthreads
3797     fi
3798 fi
3799
3800 for thread in $THREADS_LIST; do
3801     if enabled $thread; then
3802         test -n "$thread_type" &&
3803             die "ERROR: Only one thread type must be selected." ||
3804             thread_type="$thread"
3805     fi
3806 done
3807
3808 if enabled pthreads; then
3809   check_func pthread_cancel
3810 fi
3811
3812 check_lib math.h sin -lm && LIBM="-lm"
3813 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3814 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3815
3816 atan2f_args=2
3817 ldexpf_args=2
3818 powf_args=2
3819
3820 for func in $MATH_FUNCS; do
3821     eval check_mathfunc $func \${${func}_args:-1}
3822 done
3823
3824 # these are off by default, so fail if requested and not available
3825 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3826 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3827 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3828 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3829 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3830 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3831 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3832 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3833 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3834                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3835                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3836 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3837 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3838 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3839 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"
3840 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3841 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3842 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
3843 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3844 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3845 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3846 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3847 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3848 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3849 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3850 enabled libopenjpeg && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
3851                          check_lib openjpeg.h opj_version -lopenjpeg ||
3852                          die "ERROR: libopenjpeg not found"; }
3853 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3854 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3855 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3856 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3857 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3858 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3859 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3860     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3861     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3862 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3863 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3864                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3865                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3866 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3867 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3868 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3869 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3870 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3871 enabled libvpx     && {
3872     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3873                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3874     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
3875                                 die "ERROR: libvpx encoder version must be >=0.9.7"; }
3876     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3877     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3878 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3879                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3880                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3881 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3882 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3883 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3884                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3885                         die "ERROR: openal not found"; } &&
3886                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3887                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3888 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3889                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3890                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3891                         die "ERROR: openssl not found"; }
3892
3893 if enabled gnutls; then
3894     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3895     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3896 fi
3897
3898 # libdc1394 check
3899 if enabled libdc1394; then
3900     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3901         enable libdc1394_2; } ||
3902     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3903         enable libdc1394_1; } ||
3904     die "ERROR: No version of libdc1394 found "
3905 fi
3906
3907 SDL_CONFIG="${cross_prefix}sdl-config"
3908 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3909     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3910     enable sdl &&
3911     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3912 else
3913   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3914     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3915     sdl_libs=$("${SDL_CONFIG}" --libs)
3916     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3917     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3918     enable sdl &&
3919     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3920   fi
3921 fi
3922 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3923
3924 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3925 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3926 perl --version > /dev/null 2>&1 && enable perl || disable perl
3927 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3928 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
3929
3930 check_header linux/fb.h
3931 check_header linux/videodev.h
3932 check_header linux/videodev2.h
3933 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
3934
3935 check_header sys/videoio.h
3936
3937 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3938 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3939 # w32api 3.12 had it defined wrong
3940 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3941
3942 check_type "dshow.h" IBaseFilter
3943
3944 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3945 { check_header dev/bktr/ioctl_meteor.h &&
3946   check_header dev/bktr/ioctl_bt848.h; } ||
3947 { check_header machine/ioctl_meteor.h &&
3948   check_header machine/ioctl_bt848.h; } ||
3949 { check_header dev/video/meteor/ioctl_meteor.h &&
3950   check_header dev/video/bktr/ioctl_bt848.h; } ||
3951 check_header dev/ic/bt8xx.h
3952
3953 check_header sndio.h
3954 if check_struct sys/soundcard.h audio_buf_info bytes; then
3955     enable_safe sys/soundcard.h
3956 else
3957     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3958     #include <sys/soundcard.h>
3959     audio_buf_info abc;
3960 EOF
3961 fi
3962 check_header soundcard.h
3963
3964 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3965
3966 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3967     check_func jack_port_get_latency_range -ljack
3968
3969 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3970
3971 if enabled libcdio; then
3972     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3973 fi
3974
3975 enabled x11grab                                           &&
3976 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3977 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3978 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3979
3980 if ! disabled vaapi; then
3981     check_lib va/va.h vaInitialize -lva && {
3982         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3983         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3984     } || disable vaapi
3985 fi
3986
3987 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3988     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3989         { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." && disable vdpau; }
3990 fi
3991
3992 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3993 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
3994 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"
3995
3996 # add some useful compiler flags if supported
3997 check_cflags -Wdeclaration-after-statement
3998 check_cflags -Wall
3999 check_cflags -Wno-parentheses
4000 check_cflags -Wno-switch
4001 check_cflags -Wno-format-zero-length
4002 check_cflags -Wdisabled-optimization
4003 check_cflags -Wpointer-arith
4004 check_cflags -Wredundant-decls
4005 check_cflags -Wno-pointer-sign
4006 check_cflags -Wwrite-strings
4007 check_cflags -Wtype-limits
4008 check_cflags -Wundef
4009 check_cflags -Wmissing-prototypes
4010 check_cflags -Wno-pointer-to-int-cast
4011 check_cflags -Wstrict-prototypes
4012 enabled extra_warnings && check_cflags -Winline
4013
4014 # add some linker flags
4015 check_ldflags -Wl,--warn-common
4016 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4017 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4018
4019 enabled xmm_clobber_test &&
4020     check_ldflags -Wl,--wrap,avcodec_open2              \
4021                   -Wl,--wrap,avcodec_decode_audio4      \
4022                   -Wl,--wrap,avcodec_decode_video2      \
4023                   -Wl,--wrap,avcodec_decode_subtitle2   \
4024                   -Wl,--wrap,avcodec_encode_audio2      \
4025                   -Wl,--wrap,avcodec_encode_video       \
4026                   -Wl,--wrap,avcodec_encode_subtitle    \
4027                   -Wl,--wrap,sws_scale ||
4028     disable xmm_clobber_test
4029
4030 echo "X{};" > $TMPV
4031 if test_ldflags -Wl,--version-script,$TMPV; then
4032     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4033     check_cc <<EOF && enable symver_asm_label
4034 void ff_foo(void) __asm__ ("av_foo@VERSION");
4035 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4036 EOF
4037     check_cc <<EOF && enable symver_gnu_asm
4038 __asm__(".symver ff_foo,av_foo@VERSION");
4039 void ff_foo(void) {}
4040 EOF
4041 fi
4042
4043 if [ -z "$optflags" ]; then
4044     if enabled small; then
4045         optflags=$cflags_size
4046     elif enabled optimizations; then
4047         optflags=$cflags_speed
4048     else
4049         optflags=$cflags_noopt
4050     fi
4051 fi
4052
4053 check_optflags(){
4054     check_cflags "$@"
4055     enabled lto && check_ldflags "$@"
4056 }
4057
4058
4059 if enabled lto; then
4060     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4061     check_cflags  -flto
4062     check_ldflags -flto $cpuflags
4063 fi
4064
4065 check_optflags $optflags
4066 check_optflags -fno-math-errno
4067 check_optflags -fno-signed-zeros
4068
4069 enabled ftrapv && check_cflags -ftrapv
4070
4071 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4072 int x;
4073 EOF
4074
4075
4076 if enabled icc; then
4077     # Just warnings, no remarks
4078     check_cflags -w1
4079     # -wd: Disable following warnings
4080     # 144, 167, 556: -Wno-pointer-sign
4081     # 188: enumerated type mixed with another type
4082     # 1292: attribute "foo" ignored
4083     # 1419: external declaration in primary source file
4084     # 10006: ignoring unknown option -fno-signed-zeros
4085     # 10148: ignoring unknown option -Wno-parentheses
4086     # 10156: ignoring option '-W'; no argument required
4087     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4088     # 11030: Warning unknown option --as-needed
4089     # 10156: ignoring option '-export'; no argument required
4090     check_ldflags -wd10156,11030
4091     # Allow to compile with optimizations
4092     check_ldflags -march=$cpu
4093     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4094     enable ebp_available
4095     if enabled x86_32; then
4096         icc_version=$($cc -dumpversion)
4097         test ${icc_version%%.*} -ge 11 &&
4098             check_cflags -falign-stack=maintain-16-byte ||
4099             disable aligned_stack
4100     fi
4101 elif enabled ccc; then
4102     # disable some annoying warnings
4103     add_cflags -msg_disable bitnotint
4104     add_cflags -msg_disable mixfuncvoid
4105     add_cflags -msg_disable nonstandcast
4106     add_cflags -msg_disable unsupieee
4107 elif enabled gcc; then
4108     check_optflags -fno-tree-vectorize
4109     check_cflags -Werror=implicit-function-declaration
4110     check_cflags -Werror=missing-prototypes
4111     check_cflags -Werror=return-type
4112     check_cflags -Werror=vla
4113 elif enabled llvm_gcc; then
4114     check_cflags -mllvm -stack-alignment=16
4115 elif enabled clang; then
4116     check_cflags -mllvm -stack-alignment=16
4117     check_cflags -Qunused-arguments
4118     check_cflags -Werror=implicit-function-declaration
4119     check_cflags -Werror=missing-prototypes
4120     check_cflags -Werror=return-type
4121 elif enabled armcc; then
4122     # 2523: use of inline assembler is deprecated
4123     add_cflags -W${armcc_opt},--diag_suppress=2523
4124     add_cflags -W${armcc_opt},--diag_suppress=1207
4125     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4126     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4127     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4128     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4129 elif enabled tms470; then
4130     add_cflags -pds=824 -pds=837
4131 elif enabled pathscale; then
4132     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4133 elif enabled msvc; then
4134     enabled x86_32 && disable aligned_stack
4135 fi
4136
4137 case $target_os in
4138     osf1)
4139         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4140     ;;
4141     plan9)
4142         add_cppflags -Dmain=plan9_main
4143     ;;
4144 esac
4145
4146 enabled_any $THREADS_LIST      && enable threads
4147
4148 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4149
4150 check_deps $CONFIG_LIST       \
4151            $CONFIG_EXTRA      \
4152            $HAVE_LIST         \
4153            $ALL_COMPONENTS    \
4154
4155
4156 if test $target_os = "haiku"; then
4157     disable memalign
4158     disable posix_memalign
4159 fi
4160
4161 ! enabled_any memalign posix_memalign aligned_malloc &&
4162     enabled_any $need_memalign && enable memalign_hack
4163
4164 # add_dep lib dep
4165 # -> enable ${lib}_deps_${dep}
4166 # -> add $dep to ${lib}_deps only once
4167 add_dep() {
4168     lib=$1
4169     dep=$2
4170     enabled "${lib}_deps_${dep}" && return 0
4171     enable  "${lib}_deps_${dep}"
4172     prepend "${lib}_deps" $dep
4173 }
4174
4175 # merge deps lib components
4176 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4177 merge_deps() {
4178     lib=$1
4179     shift
4180     for comp in $*; do
4181         enabled $comp || continue
4182         eval "dep=\"\$${comp}_deps\""
4183         for d in $dep; do
4184             add_dep $lib $d
4185         done
4186     done
4187 }
4188
4189 merge_deps libavfilter $FILTER_LIST
4190
4191 echo "install prefix            $prefix"
4192 echo "source path               $source_path"
4193 echo "C compiler                $cc"
4194 echo "ARCH                      $arch ($cpu)"
4195 if test "$build_suffix" != ""; then
4196     echo "build suffix              $build_suffix"
4197 fi
4198 if test "$progs_suffix" != ""; then
4199     echo "progs suffix              $progs_suffix"
4200 fi
4201 if test "$extra_version" != ""; then
4202     echo "version string suffix     $extra_version"
4203 fi
4204 echo "big-endian                ${bigendian-no}"
4205 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4206 if enabled x86; then
4207     echo "${yasmexe}                      ${yasm-no}"
4208     echo "MMX enabled               ${mmx-no}"
4209     echo "MMXEXT enabled            ${mmxext-no}"
4210     echo "3DNow! enabled            ${amd3dnow-no}"
4211     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4212     echo "SSE enabled               ${sse-no}"
4213     echo "SSSE3 enabled             ${ssse3-no}"
4214     echo "AVX enabled               ${avx-no}"
4215     echo "FMA4 enabled              ${fma4-no}"
4216     echo "CMOV enabled              ${cmov-no}"
4217     echo "CMOV is fast              ${fast_cmov-no}"
4218     echo "EBX available             ${ebx_available-no}"
4219     echo "EBP available             ${ebp_available-no}"
4220 fi
4221 if enabled arm; then
4222     echo "ARMv5TE enabled           ${armv5te-no}"
4223     echo "ARMv6 enabled             ${armv6-no}"
4224     echo "ARMv6T2 enabled           ${armv6t2-no}"
4225     echo "VFP enabled               ${vfp-no}"
4226     echo "NEON enabled              ${neon-no}"
4227     echo "THUMB enabled             ${thumb-no}"
4228 fi
4229 if enabled mips; then
4230     echo "MIPS FPU enabled          ${mipsfpu-no}"
4231     echo "MIPS32R2 enabled          ${mips32r2-no}"
4232     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4233     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4234 fi
4235 if enabled ppc; then
4236     echo "AltiVec enabled           ${altivec-no}"
4237     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4238     echo "dcbzl available           ${dcbzl-no}"
4239 fi
4240 if enabled sparc; then
4241     echo "VIS enabled               ${vis-no}"
4242 fi
4243 echo "debug symbols             ${debug-no}"
4244 echo "strip symbols             ${stripping-no}"
4245 echo "optimize for size         ${small-no}"
4246 echo "optimizations             ${optimizations-no}"
4247 echo "static                    ${static-no}"
4248 echo "shared                    ${shared-no}"
4249 echo "postprocessing support    ${postproc-no}"
4250 echo "new filter support        ${avfilter-no}"
4251 echo "network support           ${network-no}"
4252 echo "threading support         ${thread_type-no}"
4253 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4254 echo "SDL support               ${sdl-no}"
4255 echo "libdxva2 enabled          ${dxva2-no}"
4256 echo "libva enabled             ${vaapi-no}"
4257 echo "libvdpau enabled          ${vdpau-no}"
4258 echo "AVISynth enabled          ${avisynth-no}"
4259 echo "frei0r enabled            ${frei0r-no}"
4260 echo "gnutls enabled            ${gnutls-no}"
4261 echo "libaacplus enabled        ${libaacplus-no}"
4262 echo "libass enabled            ${libass-no}"
4263 echo "libcaca enabled           ${libcaca-no}"
4264 echo "libcdio support           ${libcdio-no}"
4265 echo "libcelt enabled           ${libcelt-no}"
4266 echo "libdc1394 support         ${libdc1394-no}"
4267 echo "libfaac enabled           ${libfaac-no}"
4268 echo "libfdk-aac enabled        ${libfdk_aac-no}"
4269 echo "libgsm enabled            ${libgsm-no}"
4270 echo "libiec61883 support       ${libiec61883-no}"
4271 echo "libilbc enabled           ${libilbc-no}"
4272 echo "libmodplug enabled        ${libmodplug-no}"
4273 echo "libmp3lame enabled        ${libmp3lame-no}"
4274 echo "libnut enabled            ${libnut-no}"
4275 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
4276 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
4277 echo "libopencv support         ${libopencv-no}"
4278 echo "libopenjpeg enabled       ${libopenjpeg-no}"
4279 echo "libopus enabled           ${libopus-no}"
4280 echo "libpulse enabled          ${libpulse-no}"
4281 echo "librtmp enabled           ${librtmp-no}"
4282 echo "libschroedinger enabled   ${libschroedinger-no}"
4283 echo "libsoxr enabled           ${libsoxr-no}"
4284 echo "libspeex enabled          ${libspeex-no}"
4285 echo "libstagefright-h264 enabled    ${libstagefright_h264-no}"
4286 echo "libtheora enabled         ${libtheora-no}"
4287 echo "libtwolame enabled        ${libtwolame-no}"
4288 echo "libutvideo enabled        ${libutvideo-no}"
4289 echo "libv4l2 enabled           ${libv4l2-no}"
4290 echo "libvo-aacenc support      ${libvo_aacenc-no}"
4291 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
4292 echo "libvorbis enabled         ${libvorbis-no}"
4293 echo "libvpx enabled            ${libvpx-no}"
4294 echo "libx264 enabled           ${libx264-no}"
4295 echo "libxavs enabled           ${libxavs-no}"
4296 echo "libxvid enabled           ${libxvid-no}"
4297 echo "openal enabled            ${openal-no}"
4298 echo "openssl enabled           ${openssl-no}"
4299 echo "zlib enabled              ${zlib-no}"
4300 echo "bzlib enabled             ${bzlib-no}"
4301 echo "texi2html enabled         ${texi2html-no}"
4302 echo "perl enabled              ${perl-no}"
4303 echo "pod2man enabled           ${pod2man-no}"
4304 echo "makeinfo enabled          ${makeinfo-no}"
4305 test -n "$random_seed" &&
4306     echo "random seed               ${random_seed}"
4307 echo
4308
4309 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4310     echo "Enabled ${type}s:"
4311     eval list=\$$(toupper $type)_LIST
4312     print_enabled '_*' $list | sort | pr -r -3 -t
4313     echo
4314 done
4315
4316 license="LGPL version 2.1 or later"
4317 if enabled nonfree; then
4318     license="nonfree and unredistributable"
4319 elif enabled gplv3; then
4320     license="GPL version 3 or later"
4321 elif enabled lgplv3; then
4322     license="LGPL version 3 or later"
4323 elif enabled gpl; then
4324     license="GPL version 2 or later"
4325 fi
4326
4327 echo "License: $license"
4328
4329 echo "Creating config.mak and config.h..."
4330
4331 test -e Makefile || $ln_s "$source_path/Makefile" .
4332
4333 enabled stripping || strip="echo skipping strip"
4334
4335 config_files="$TMPH config.mak"
4336
4337 cat > config.mak <<EOF
4338 # Automatically generated by configure - do not modify!
4339 ifndef FFMPEG_CONFIG_MAK
4340 FFMPEG_CONFIG_MAK=1
4341 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4342 prefix=$prefix
4343 LIBDIR=\$(DESTDIR)$libdir
4344 SHLIBDIR=\$(DESTDIR)$shlibdir
4345 INCDIR=\$(DESTDIR)$incdir
4346 BINDIR=\$(DESTDIR)$bindir
4347 DATADIR=\$(DESTDIR)$datadir
4348 MANDIR=\$(DESTDIR)$mandir
4349 SRC_PATH=$source_path
4350 ifndef MAIN_MAKEFILE
4351 SRC_PATH:=\$(SRC_PATH:.%=..%)
4352 endif
4353 CC_IDENT=$cc_ident
4354 ARCH=$arch
4355 CC=$cc
4356 CXX=$cxx
4357 AS=$as
4358 LD=$ld
4359 DEPCC=$dep_cc
4360 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4361 DEPAS=$as
4362 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4363 YASM=$yasmexe
4364 DEPYASM=$yasmexe
4365 AR=$ar
4366 ARFLAGS=$arflags
4367 AR_O=$ar_o
4368 RANLIB=$ranlib
4369 CP=cp -p
4370 LN_S=$ln_s
4371 STRIP=$strip
4372 CPPFLAGS=$CPPFLAGS
4373 CFLAGS=$CFLAGS
4374 CXXFLAGS=$CXXFLAGS
4375 ASFLAGS=$ASFLAGS
4376 AS_C=$AS_C
4377 AS_O=$AS_O
4378 CC_C=$CC_C
4379 CC_E=$CC_E
4380 CC_O=$CC_O
4381 CXX_C=$CXX_C
4382 CXX_O=$CXX_O
4383 LD_O=$LD_O
4384 LD_LIB=$LD_LIB
4385 LD_PATH=$LD_PATH
4386 DLLTOOL=$dlltool
4387 LDFLAGS=$LDFLAGS
4388 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4389 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4390 YASMFLAGS=$YASMFLAGS
4391 BUILDSUF=$build_suffix
4392 PROGSSUF=$progs_suffix
4393 FULLNAME=$FULLNAME
4394 LIBPREF=$LIBPREF
4395 LIBSUF=$LIBSUF
4396 LIBNAME=$LIBNAME
4397 SLIBPREF=$SLIBPREF
4398 SLIBSUF=$SLIBSUF
4399 EXESUF=$EXESUF
4400 EXTRA_VERSION=$extra_version
4401 CCDEP=$CCDEP
4402 CXXDEP=$CXXDEP
4403 CCDEP_FLAGS=$CCDEP_FLAGS
4404 ASDEP=$ASDEP
4405 ASDEP_FLAGS=$ASDEP_FLAGS
4406 CC_DEPFLAGS=$CC_DEPFLAGS
4407 AS_DEPFLAGS=$AS_DEPFLAGS
4408 HOSTCC=$host_cc
4409 HOSTLD=$host_ld
4410 HOSTCFLAGS=$host_cflags
4411 HOSTEXESUF=$HOSTEXESUF
4412 HOSTLDFLAGS=$host_ldflags
4413 HOSTLIBS=$host_libs
4414 DEPHOSTCC=$host_cc
4415 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4416 HOSTCCDEP=$HOSTCCDEP
4417 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4418 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4419 HOSTCC_C=$HOSTCC_C
4420 HOSTCC_O=$HOSTCC_O
4421 HOSTLD_O=$HOSTLD_O
4422 TARGET_EXEC=$target_exec
4423 TARGET_PATH=$target_path
4424 LIBS-ffplay=$sdl_libs
4425 CFLAGS-ffplay=$sdl_cflags
4426 ZLIB=$($ldflags_filter -lz)
4427 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4428 EXTRALIBS=$extralibs
4429 COMPAT_OBJS=$compat_objs
4430 EXEOBJS=$exeobjs
4431 INSTALL=$install
4432 LIBTARGET=${LIBTARGET}
4433 SLIBNAME=${SLIBNAME}
4434 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4435 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4436 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4437 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4438 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4439 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4440 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4441 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4442 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4443 NOREDZONE_FLAGS=$noredzone_flags
4444 EOF
4445
4446 get_version(){
4447     lcname=lib${1}
4448     name=$(toupper $lcname)
4449     file=$source_path/$lcname/version.h
4450     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4451     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4452     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4453     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4454 }
4455
4456 map 'get_version $v' $LIBRARY_LIST
4457
4458 cat > $TMPH <<EOF
4459 /* Automatically generated by configure - do not modify! */
4460 #ifndef FFMPEG_CONFIG_H
4461 #define FFMPEG_CONFIG_H
4462 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4463 #define FFMPEG_LICENSE "$(c_escape $license)"
4464 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4465 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4466 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4467 #define av_restrict $_restrict
4468 #define EXTERN_PREFIX "${extern_prefix}"
4469 #define EXTERN_ASM ${extern_prefix}
4470 #define SLIBSUF "$SLIBSUF"
4471 #define HAVE_MMX2 HAVE_MMXEXT
4472 EOF
4473
4474 test -n "$assert_level" &&
4475     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4476
4477 test -n "$malloc_prefix" &&
4478     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4479
4480 if enabled yasm; then
4481     append config_files $TMPASM
4482     printf '' >$TMPASM
4483 fi
4484
4485 print_config ARCH_   "$config_files" $ARCH_LIST
4486 print_config HAVE_   "$config_files" $HAVE_LIST
4487 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4488                                      $CONFIG_EXTRA      \
4489                                      $ALL_COMPONENTS    \
4490
4491 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4492 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4493
4494 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4495 cp_if_changed $TMPH config.h
4496 touch .config
4497
4498 enabled yasm && cp_if_changed $TMPASM config.asm
4499
4500 cat > $TMPH <<EOF
4501 /* Generated by ffconf */
4502 #ifndef AVUTIL_AVCONFIG_H
4503 #define AVUTIL_AVCONFIG_H
4504 EOF
4505
4506 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4507
4508 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4509
4510 cp_if_changed $TMPH libavutil/avconfig.h
4511
4512 if test -n "$WARNINGS"; then
4513     printf "\n$WARNINGS"
4514     enabled fatal_warnings && exit 1
4515 fi
4516
4517 # build pkg-config files
4518
4519 pkgconfig_generate(){
4520     name=$1
4521     shortname=${name#lib}${build_suffix}
4522     comment=$2
4523     version=$3
4524     libs=$4
4525     requires=$5
4526     enabled ${name#lib} || return 0
4527     mkdir -p $name
4528     cat <<EOF > $name/$name.pc
4529 prefix=$prefix
4530 exec_prefix=\${prefix}
4531 libdir=$libdir
4532 includedir=$incdir
4533
4534 Name: $name
4535 Description: $comment
4536 Version: $version
4537 Requires: $(enabled shared || echo $requires)
4538 Requires.private: $(enabled shared && echo $requires)
4539 Conflicts:
4540 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4541 Libs.private: $(enabled shared && echo $libs)
4542 Cflags: -I\${includedir}
4543 EOF
4544
4545 mkdir -p doc/examples/pc-uninstalled
4546 includedir=${source_path}
4547 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4548     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4549 prefix=
4550 exec_prefix=
4551 libdir=\${pcfiledir}/../../../$name
4552 includedir=${includedir}
4553
4554 Name: $name
4555 Description: $comment
4556 Version: $version
4557 Requires: $requires
4558 Conflicts:
4559 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4560 Cflags: -I\${includedir}
4561 EOF
4562 }
4563
4564 libavfilter_pc_deps="libavutil = $LIBAVUTIL_VERSION"
4565 enabled libavfilter_deps_avcodec    && prepend libavfilter_pc_deps "libavcodec = $LIBAVCODEC_VERSION,"
4566 enabled libavfilter_deps_avformat   && prepend libavfilter_pc_deps "libavformat = $LIBAVFORMAT_VERSION,"
4567 enabled libavfilter_deps_avresample && prepend libavfilter_pc_deps "libavresample = $LIBAVRESAMPLE_VERSION,"
4568 enabled libavfilter_deps_swscale    && prepend libavfilter_pc_deps "libswscale = $LIBSWSCALE_VERSION,"
4569 enabled libavfilter_deps_swresample && prepend libavfilter_pc_deps "libswresample = $LIBSWRESAMPLE_VERSION,"
4570 enabled libavfilter_deps_postproc   && prepend libavfilter_pc_deps "libpostproc = $LIBPOSTPROC_VERSION,"
4571 libavfilter_pc_deps=${libavfilter_pc_deps%, }
4572
4573 libavdevice_pc_deps="libavformat = $LIBAVFORMAT_VERSION"
4574 enabled lavfi_indev && prepend libavdevice_pc_deps "libavfilter = $LIBAVFILTER_VERSION,"
4575
4576 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4577 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4578 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4579 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$libavdevice_pc_deps"
4580 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$libavfilter_pc_deps"
4581 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
4582 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4583 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4584 pkgconfig_generate libswresample "FFmpeg audio resampling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4585
4586 fix_ffmpeg_remote(){
4587     git_remote_from=$1
4588     git_remote_to=$2
4589     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4590     if [ "$fixme_remote" != "" ]; then
4591         echolog "
4592 Outdated domain in git config, the official domain for ffmpeg git is since
4593 November 2011, source.ffmpeg.org, both the old and the new point to the same
4594 repository and server. To update it enter the following commands:
4595 "
4596         for remote in $fixme_remote; do
4597             echolog "git remote set-url $remote $git_remote_to"
4598         done
4599     fi
4600 }
4601
4602 if test -f "$source_path/.git/config"; then
4603     remote_from=git.videolan.org
4604     remote_to=source.ffmpeg.org
4605     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4606     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4607 fi