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*' $@)
 793     libs=$(filter '-l*' $@)
 794     check_$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     clock_gettime
1347     closesocket
1348     cmov
1349     CommandLineToArgvW
1350     cpunop
1351     CryptGenRandom
1352     dcbzl
1353     dev_bktr_ioctl_bt848_h
1354     dev_bktr_ioctl_meteor_h
1355     dev_ic_bt8xx_h
1356     dev_video_bktr_ioctl_bt848_h
1357     dev_video_meteor_ioctl_meteor_h
1358     direct_h
1359     dlfcn_h
1360     dlopen
1361     dos_paths
1362     dxva_h
1363     ebp_available
1364     ebx_available
1365     fast_64bit
1366     fast_clz
1367     fast_cmov
1368     fcntl
1369     fork
1370     getaddrinfo
1371     gethrtime
1372     getopt
1373     GetProcessAffinityMask
1374     GetProcessMemoryInfo
1375     GetProcessTimes
1376     GetSystemTimeAsFileTime
1377     getrusage
1378     getservbyport
1379     gettimeofday
1380     glob
1381     gnu_as
1382     ibm_asm
1383     inet_aton
1384     io_h
1385     isatty
1386     jack_port_get_latency_range
1387     kbhit
1388     ldbrx
1389     libdc1394_1
1390     libdc1394_2
1391     local_aligned_16
1392     local_aligned_8
1393     localtime_r
1394     loongson
1395     lzo1x_999_compress
1396     machine_ioctl_bt848_h
1397     machine_ioctl_meteor_h
1398     makeinfo
1399     malloc_h
1400     MapViewOfFile
1401     memalign
1402     mkstemp
1403     mm_empty
1404     mmap
1405     mprotect
1406     msvcrt
1407     nanosleep
1408     openjpeg_1_5_openjpeg_h
1409     PeekNamedPipe
1410     perl
1411     pod2man
1412     poll_h
1413     posix_memalign
1414     pthread_cancel
1415     rdtsc
1416     rsync_contimeout
1417     sched_getaffinity
1418     sdl
1419     sdl_video_size
1420     SetConsoleTextAttribute
1421     setmode
1422     setrlimit
1423     Sleep
1424     sndio_h
1425     socklen_t
1426     soundcard_h
1427     strerror_r
1428     struct_addrinfo
1429     struct_group_source_req
1430     struct_ip_mreq_source
1431     struct_ipv6_mreq
1432     struct_pollfd
1433     struct_rusage_ru_maxrss
1434     struct_sctp_event_subscribe
1435     struct_sockaddr_in6
1436     struct_sockaddr_sa_len
1437     struct_sockaddr_storage
1438     struct_v4l2_frmivalenum_discrete
1439     symver_asm_label
1440     symver_gnu_asm
1441     sysconf
1442     sysctl
1443     sys_mman_h
1444     sys_param_h
1445     sys_resource_h
1446     sys_select_h
1447     sys_soundcard_h
1448     sys_time_h
1449     sys_videoio_h
1450     termios_h
1451     texi2html
1452     threads
1453     unistd_h
1454     usleep
1455     vfp_args
1456     VirtualAlloc
1457     windows_h
1458     winsock2_h
1459     xform_asm
1460     xmm_clobbers
1461 "
1462
1463 # options emitted with CONFIG_ prefix but not available on the command line
1464 CONFIG_EXTRA="
1465     aandcttables
1466     ac3dsp
1467     error_resilience
1468     gcrypt
1469     golomb
1470     gplv3
1471     h264chroma
1472     h264dsp
1473     h264pred
1474     h264qpel
1475     huffman
1476     lgplv3
1477     lpc
1478     mpegaudio
1479     mpegaudiodsp
1480     mpegvideo
1481     mpegvideoenc
1482     nettle
1483     rangecoder
1484     rtpdec
1485     rtpenc_chain
1486     sinewin
1487     videodsp
1488     vp3dsp
1489 "
1490
1491 CMDLINE_SELECT="
1492     $ARCH_EXT_LIST
1493     $CONFIG_LIST
1494     $HAVE_LIST_CMDLINE
1495     $THREADS_LIST
1496     asm
1497     coverage
1498     cross_compile
1499     debug
1500     extra_warnings
1501     logging
1502     lto
1503     optimizations
1504     stripping
1505 "
1506
1507 PATHS_LIST='
1508     bindir
1509     datadir
1510     incdir
1511     libdir
1512     mandir
1513     prefix
1514     shlibdir
1515 '
1516
1517 CMDLINE_SET="
1518     $PATHS_LIST
1519     ar
1520     arch
1521     as
1522     assert_level
1523     build_suffix
1524     cc
1525     cpu
1526     cross_prefix
1527     cxx
1528     dep_cc
1529     extra_version
1530     host_cc
1531     host_cflags
1532     host_ld
1533     host_ldflags
1534     host_libs
1535     host_os
1536     install
1537     ld
1538     logfile
1539     malloc_prefix
1540     nm
1541     optflags
1542     pkg_config
1543     progs_suffix
1544     random_seed
1545     samples
1546     strip
1547     sysinclude
1548     sysroot
1549     target_exec
1550     target_os
1551     target_path
1552     toolchain
1553     valgrind
1554     yasmexe
1555 "
1556
1557 CMDLINE_APPEND="
1558     extra_cflags
1559     extra_cxxflags
1560 "
1561
1562 # code dependency declarations
1563
1564 # architecture extensions
1565
1566 armv5te_deps="arm"
1567 armv6_deps="arm"
1568 armv6t2_deps="arm"
1569 neon_deps="arm"
1570 vfp_deps="arm"
1571 vfpv3_deps="vfp"
1572
1573 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1574
1575 mipsfpu_deps="mips"
1576 mips32r2_deps="mips"
1577 mipsdspr1_deps="mips"
1578 mipsdspr2_deps="mips"
1579
1580 altivec_deps="ppc"
1581 ppc4xx_deps="ppc"
1582
1583 vis_deps="sparc"
1584
1585 x86_64_suggest="cmov fast_cmov"
1586
1587 amd3dnow_deps="mmx"
1588 amd3dnowext_deps="amd3dnow"
1589 mmx_deps="x86"
1590 mmxext_deps="mmx"
1591 sse_deps="mmxext"
1592 sse2_deps="sse"
1593 sse3_deps="sse2"
1594 ssse3_deps="sse3"
1595 sse4_deps="ssse3"
1596 sse42_deps="sse4"
1597 avx_deps="sse42"
1598 fma4_deps="avx"
1599
1600 mmx_external_deps="yasm"
1601 mmx_inline_deps="inline_asm"
1602 mmx_suggest="mmx_external mmx_inline"
1603
1604 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1605     eval dep=\$${ext}_deps
1606     eval ${ext}_external_deps='"${dep}_external"'
1607     eval ${ext}_inline_deps='"${dep}_inline"'
1608     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1609 done
1610
1611 aligned_stack_if_any="ppc x86"
1612 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1613 fast_clz_if_any="alpha avr32 mips ppc x86"
1614 fast_unaligned_if_any="ppc x86"
1615
1616 inline_asm_deps="!tms470"
1617 need_memalign="altivec neon sse"
1618
1619 symver_if_any="symver_asm_label symver_gnu_asm"
1620
1621 log2_deps="!msvcrt"
1622
1623 # subsystems
1624 dct_select="rdft"
1625 mdct_select="fft"
1626 rdft_select="fft"
1627 mpegaudio_select="mpegaudiodsp"
1628 mpegaudiodsp_select="dct"
1629 mpegvideo_select="videodsp"
1630 mpegvideoenc_select="mpegvideo"
1631
1632 # decoders / encoders
1633 aac_decoder_select="mdct sinewin"
1634 aac_encoder_select="mdct sinewin"
1635 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1636 ac3_decoder_select="mdct ac3dsp ac3_parser"
1637 ac3_encoder_select="mdct ac3dsp"
1638 ac3_fixed_encoder_select="mdct ac3dsp"
1639 alac_encoder_select="lpc"
1640 amrnb_decoder_select="lsp"
1641 amrwb_decoder_select="lsp"
1642 amv_encoder_select="aandcttables"
1643 atrac1_decoder_select="mdct sinewin"
1644 atrac3_decoder_select="mdct"
1645 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1646 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1647 cavs_decoder_select="golomb mpegvideo"
1648 comfortnoise_encoder_select="lpc"
1649 cook_decoder_select="mdct sinewin"
1650 cscd_decoder_select="lzo"
1651 cscd_decoder_suggest="zlib"
1652 dca_decoder_select="mdct"
1653 dirac_decoder_select="dwt golomb videodsp"
1654 dnxhd_encoder_select="aandcttables mpegvideoenc"
1655 dxa_decoder_select="zlib"
1656 eac3_decoder_select="ac3_decoder"
1657 eac3_encoder_select="ac3_encoder"
1658 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1659 eatgq_decoder_select="aandcttables"
1660 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1661 exr_decoder_select="zlib"
1662 ffv1_decoder_select="golomb rangecoder"
1663 ffv1_encoder_select="rangecoder"
1664 ffvhuff_encoder_select="huffman"
1665 flac_decoder_select="golomb"
1666 flac_encoder_select="golomb lpc"
1667 flashsv_decoder_select="zlib"
1668 flashsv_encoder_select="zlib"
1669 flashsv2_encoder_select="zlib"
1670 flashsv2_decoder_select="zlib"
1671 flv_decoder_select="h263_decoder"
1672 flv_encoder_select="h263_encoder"
1673 fraps_decoder_select="huffman"
1674 h261_decoder_select="error_resilience mpegvideo"
1675 h261_encoder_select="aandcttables mpegvideoenc"
1676 h263_decoder_select="error_resilience h263_parser mpegvideo"
1677 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1678 h263i_decoder_select="h263_decoder"
1679 h263p_encoder_select="h263_encoder"
1680 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1681 huffyuv_encoder_select="huffman"
1682 iac_decoder_select="fft mdct sinewin"
1683 imc_decoder_select="fft mdct sinewin"
1684 jpegls_decoder_select="golomb"
1685 jpegls_encoder_select="golomb"
1686 ljpeg_encoder_select="aandcttables mpegvideoenc"
1687 loco_decoder_select="golomb"
1688 mdec_decoder_select="error_resilience mpegvideo"
1689 mjpeg_encoder_select="aandcttables mpegvideoenc"
1690 mlp_decoder_select="mlp_parser"
1691 mp1_decoder_select="mpegaudio"
1692 mp1float_decoder_select="mpegaudio"
1693 mp2_decoder_select="mpegaudio"
1694 mp2float_decoder_select="mpegaudio"
1695 mp3_decoder_select="mpegaudio"
1696 mp3adu_decoder_select="mpegaudio"
1697 mp3adufloat_decoder_select="mpegaudio"
1698 mp3float_decoder_select="mpegaudio"
1699 mp3on4_decoder_select="mpegaudio"
1700 mp3on4float_decoder_select="mpegaudio"
1701 mpc7_decoder_select="mpegaudiodsp"
1702 mpc8_decoder_select="mpegaudiodsp"
1703 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1704 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1705 mpeg1video_decoder_select="error_resilience mpegvideo"
1706 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1707 mpeg2video_decoder_select="error_resilience mpegvideo"
1708 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1709 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1710 mpeg4_encoder_select="h263_encoder"
1711 msmpeg4v1_decoder_select="h263_decoder"
1712 msmpeg4v1_encoder_select="h263_encoder"
1713 msmpeg4v2_decoder_select="h263_decoder"
1714 msmpeg4v2_encoder_select="h263_encoder"
1715 msmpeg4v3_decoder_select="h263_decoder"
1716 msmpeg4v3_encoder_select="h263_encoder"
1717 mss2_decoder_select="vc1_decoder"
1718 nellymoser_decoder_select="mdct sinewin"
1719 nellymoser_encoder_select="mdct sinewin"
1720 nuv_decoder_select="lzo"
1721 png_decoder_select="zlib"
1722 png_encoder_select="zlib"
1723 qcelp_decoder_select="lsp"
1724 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1725 ra_144_encoder_select="lpc"
1726 ralf_decoder_select="golomb"
1727 rv10_decoder_select="h263_decoder"
1728 rv10_encoder_select="h263_encoder"
1729 rv20_decoder_select="h263_decoder"
1730 rv20_encoder_select="h263_encoder"
1731 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1732 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1733 shorten_decoder_select="golomb"
1734 sipr_decoder_select="lsp"
1735 snow_decoder_select="dwt rangecoder"
1736 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1737 sonic_decoder_select="golomb"
1738 sonic_encoder_select="golomb"
1739 sonic_ls_encoder_select="golomb"
1740 svq1_decoder_select="error_resilience mpegvideo"
1741 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1742 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1743 svq3_decoder_suggest="zlib"
1744 theora_decoder_select="vp3_decoder"
1745 tiff_decoder_suggest="zlib"
1746 tiff_encoder_suggest="zlib"
1747 truehd_decoder_select="mlp_parser"
1748 tscc_decoder_select="zlib"
1749 twinvq_decoder_select="mdct lsp sinewin"
1750 utvideo_encoder_select="huffman"
1751 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1752 vc1image_decoder_select="vc1_decoder"
1753 vorbis_decoder_select="mdct"
1754 vorbis_encoder_select="mdct"
1755 vp3_decoder_select="vp3dsp videodsp"
1756 vp5_decoder_select="vp3dsp videodsp"
1757 vp6_decoder_select="huffman vp3dsp videodsp"
1758 vp6a_decoder_select="vp6_decoder"
1759 vp6f_decoder_select="vp6_decoder"
1760 vp8_decoder_select="h264pred videodsp"
1761 wmapro_decoder_select="mdct sinewin"
1762 wmav1_decoder_select="mdct sinewin"
1763 wmav1_encoder_select="mdct sinewin"
1764 wmav2_decoder_select="mdct sinewin"
1765 wmav2_encoder_select="mdct sinewin"
1766 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1767 wmv1_decoder_select="h263_decoder"
1768 wmv1_encoder_select="h263_encoder"
1769 wmv2_decoder_select="h263_decoder"
1770 wmv2_encoder_select="h263_encoder"
1771 wmv3_decoder_select="vc1_decoder"
1772 wmv3image_decoder_select="wmv3_decoder"
1773 zerocodec_decoder_select="zlib"
1774 zlib_decoder_select="zlib"
1775 zlib_encoder_select="zlib"
1776 zmbv_decoder_select="zlib"
1777 zmbv_encoder_select="zlib"
1778
1779 # hardware accelerators
1780 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1781 vaapi_deps="va_va_h"
1782 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1783 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1784
1785 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1786 h263_vdpau_hwaccel_select="vdpau h263_decoder"
1787 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1788 h264_dxva2_hwaccel_deps="dxva2api_h"
1789 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1790 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1791 h264_vda_decoder_select="vda h264_parser h264_decoder"
1792 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1793 h264_vda_hwaccel_select="vda h264_decoder"
1794 h264_vdpau_decoder_select="vdpau h264_decoder"
1795 h264_vdpau_hwaccel_select="vdpau h264_decoder"
1796 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1797 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1798 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1799 mpeg2_crystalhd_decoder_select="crystalhd"
1800 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1801 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1802 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1803 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1804 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1805 mpeg4_crystalhd_decoder_select="crystalhd"
1806 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1807 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1808 mpeg4_vdpau_hwaccel_select="vdpau mpeg4_decoder"
1809 msmpeg4_crystalhd_decoder_select="crystalhd"
1810 vc1_crystalhd_decoder_select="crystalhd"
1811 vc1_dxva2_hwaccel_deps="dxva2api_h"
1812 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1813 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1814 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1815 vc1_vdpau_hwaccel_select="vdpau vc1_decoder"
1816 wmv3_crystalhd_decoder_select="crystalhd"
1817 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1818 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1819 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1820 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1821
1822 # parsers
1823 h264_parser_select="error_resilience golomb h264dsp h264pred mpegvideo"
1824 mpeg4video_parser_select="error_resilience mpegvideo"
1825 mpegvideo_parser_select="error_resilience mpegvideo"
1826 vc1_parser_select="error_resilience mpegvideo"
1827
1828 # external libraries
1829 libaacplus_encoder_deps="libaacplus"
1830 libcelt_decoder_deps="libcelt"
1831 libfaac_encoder_deps="libfaac"
1832 libfdk_aac_encoder_deps="libfdk_aac"
1833 libgsm_decoder_deps="libgsm"
1834 libgsm_encoder_deps="libgsm"
1835 libgsm_ms_decoder_deps="libgsm"
1836 libgsm_ms_encoder_deps="libgsm"
1837 libilbc_decoder_deps="libilbc"
1838 libilbc_encoder_deps="libilbc"
1839 libmodplug_demuxer_deps="libmodplug"
1840 libmp3lame_encoder_deps="libmp3lame"
1841 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1842 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1843 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1844 libopenjpeg_decoder_deps="libopenjpeg"
1845 libopenjpeg_encoder_deps="libopenjpeg"
1846 libopus_decoder_deps="libopus"
1847 libopus_encoder_deps="libopus"
1848 libschroedinger_decoder_deps="libschroedinger"
1849 libschroedinger_encoder_deps="libschroedinger"
1850 libspeex_decoder_deps="libspeex"
1851 libspeex_encoder_deps="libspeex"
1852 libstagefright_h264_decoder_deps="libstagefright_h264"
1853 libtheora_encoder_deps="libtheora"
1854 libtwolame_encoder_deps="libtwolame"
1855 libvo_aacenc_encoder_deps="libvo_aacenc"
1856 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1857 libvorbis_decoder_deps="libvorbis"
1858 libvorbis_encoder_deps="libvorbis"
1859 libvpx_vp8_decoder_deps="libvpx"
1860 libvpx_vp8_encoder_deps="libvpx"
1861 libvpx_vp9_decoder_deps="libvpx"
1862 libvpx_vp9_encoder_deps="libvpx"
1863 libx264_encoder_deps="libx264"
1864 libx264rgb_encoder_deps="libx264"
1865 libxavs_encoder_deps="libxavs"
1866 libxvid_encoder_deps="libxvid"
1867 libutvideo_decoder_deps="libutvideo"
1868 libutvideo_encoder_deps="libutvideo"
1869
1870 # demuxers / muxers
1871 ac3_demuxer_select="ac3_parser"
1872 asf_stream_muxer_select="asf_muxer"
1873 avisynth_demuxer_deps="avisynth"
1874 dirac_demuxer_select="dirac_parser"
1875 dts_demuxer_select="dca_parser"
1876 dtshd_demuxer_select="dca_parser"
1877 eac3_demuxer_select="ac3_parser"
1878 f4v_muxer_select="mov_muxer"
1879 flac_demuxer_select="flac_parser"
1880 ipod_muxer_select="mov_muxer"
1881 ismv_muxer_select="mov_muxer"
1882 libnut_demuxer_deps="libnut"
1883 libnut_muxer_deps="libnut"
1884 matroska_audio_muxer_select="matroska_muxer"
1885 matroska_demuxer_suggest="bzlib lzo zlib"
1886 mov_demuxer_suggest="zlib"
1887 mov_muxer_select="rtpenc_chain"
1888 mp3_demuxer_select="mpegaudio_parser"
1889 mp4_muxer_select="mov_muxer"
1890 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1891 mpegtsraw_demuxer_select="mpegts_demuxer"
1892 mxf_d10_muxer_select="mxf_muxer"
1893 ogg_demuxer_select="golomb"
1894 psp_muxer_select="mov_muxer"
1895 rtp_demuxer_select="sdp_demuxer"
1896 rtp_muxer_select="mpegvideo"
1897 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1898 rtsp_demuxer_select="http_protocol rtpdec"
1899 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1900 sap_demuxer_select="sdp_demuxer"
1901 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1902 sdp_demuxer_select="rtpdec"
1903 smoothstreaming_muxer_select="ismv_muxer"
1904 spdif_muxer_select="aac_parser"
1905 tak_demuxer_select="tak_parser"
1906 tg2_muxer_select="mov_muxer"
1907 tgp_muxer_select="mov_muxer"
1908 vobsub_demuxer_select="mpegps_demuxer"
1909 w64_demuxer_deps="wav_demuxer"
1910 w64_muxer_deps="wav_muxer"
1911
1912 # indevs / outdevs
1913 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1914 alsa_outdev_deps="alsa_asoundlib_h"
1915 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1916 caca_outdev_deps="libcaca"
1917 dshow_indev_deps="IBaseFilter"
1918 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1919 dv1394_indev_deps="dv1394 dv_demuxer"
1920 fbdev_indev_deps="linux_fb_h"
1921 iec61883_indev_deps="libiec61883"
1922 jack_indev_deps="jack_jack_h sem_timedwait"
1923 lavfi_indev_deps="avfilter"
1924 libcdio_indev_deps="libcdio"
1925 libdc1394_indev_deps="libdc1394"
1926 libv4l2_indev_deps="libv4l2"
1927 openal_indev_deps="openal"
1928 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1929 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1930 pulse_indev_deps="libpulse"
1931 sdl_outdev_deps="sdl"
1932 sndio_indev_deps="sndio_h"
1933 sndio_outdev_deps="sndio_h"
1934 v4l_indev_deps="linux_videodev_h"
1935 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1936 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1937 vfwcap_indev_extralibs="-lavicap32"
1938 x11grab_indev_deps="x11grab"
1939
1940 # protocols
1941 bluray_protocol_deps="libbluray"
1942 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1943 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1944 ffrtmpcrypt_protocol_select="tcp_protocol"
1945 ffrtmphttp_protocol_deps="!librtmp_protocol"
1946 ffrtmphttp_protocol_select="http_protocol"
1947 gopher_protocol_select="network"
1948 httpproxy_protocol_select="tcp_protocol"
1949 http_protocol_select="tcp_protocol"
1950 https_protocol_select="tls_protocol"
1951 librtmp_protocol_deps="librtmp"
1952 librtmpe_protocol_deps="librtmp"
1953 librtmps_protocol_deps="librtmp"
1954 librtmpt_protocol_deps="librtmp"
1955 librtmpte_protocol_deps="librtmp"
1956 mmsh_protocol_select="http_protocol"
1957 mmst_protocol_select="network"
1958 rtmp_protocol_deps="!librtmp_protocol"
1959 rtmp_protocol_select="tcp_protocol"
1960 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1961 rtmps_protocol_deps="!librtmp_protocol"
1962 rtmps_protocol_select="tls_protocol"
1963 rtmpt_protocol_select="ffrtmphttp_protocol"
1964 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1965 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1966 rtp_protocol_select="udp_protocol"
1967 sctp_protocol_deps="struct_sctp_event_subscribe"
1968 sctp_protocol_select="network"
1969 srtp_protocol_select="rtp_protocol"
1970 tcp_protocol_select="network"
1971 tls_protocol_deps_any="openssl gnutls"
1972 tls_protocol_select="tcp_protocol"
1973 udp_protocol_select="network"
1974
1975 # filters
1976 aconvert_filter_deps="swresample"
1977 amovie_filter_deps="avcodec avformat"
1978 aresample_filter_deps="swresample"
1979 ass_filter_deps="libass"
1980 asyncts_filter_deps="avresample"
1981 atempo_filter_deps="avcodec rdft"
1982 blackframe_filter_deps="gpl"
1983 boxblur_filter_deps="gpl"
1984 colormatrix_filter_deps="gpl"
1985 cropdetect_filter_deps="gpl"
1986 decimate_filter_deps="gpl avcodec"
1987 delogo_filter_deps="gpl"
1988 deshake_filter_deps="avcodec"
1989 drawtext_filter_deps="libfreetype"
1990 ebur128_filter_deps="gpl"
1991 flite_filter_deps="libflite"
1992 frei0r_filter_deps="frei0r dlopen"
1993 frei0r_filter_extralibs='$ldl'
1994 frei0r_src_filter_deps="frei0r dlopen"
1995 frei0r_src_filter_extralibs='$ldl'
1996 geq_filter_deps="gpl"
1997 histeq_filter_deps="gpl"
1998 hqdn3d_filter_deps="gpl"
1999 hue_filter_deps="gpl"
2000 kerndeint_filter_deps="gpl"
2001 movie_filter_deps="avcodec avformat"
2002 mp_filter_deps="gpl avcodec swscale inline_asm"
2003 mptestsrc_filter_deps="gpl"
2004 negate_filter_deps="lut_filter"
2005 resample_filter_deps="avresample"
2006 ocv_filter_deps="libopencv"
2007 pan_filter_deps="swresample"
2008 pp_filter_deps="gpl postproc"
2009 removelogo_filter_deps="avcodec avformat swscale"
2010 scale_filter_deps="swscale"
2011 smartblur_filter_deps="gpl swscale"
2012 showspectrum_filter_deps="avcodec rdft"
2013 subtitles_filter_deps="avformat avcodec libass"
2014 super2xsai_filter_deps="gpl"
2015 tinterlace_filter_deps="gpl"
2016 yadif_filter_deps="gpl"
2017 pixfmts_super2xsai_test_deps="super2xsai_filter"
2018 tinterlace_merge_test_deps="tinterlace_filter"
2019 tinterlace_pad_test_deps="tinterlace_filter"
2020
2021 # libraries
2022 avcodec_deps="avutil"
2023 avdevice_deps="avutil avcodec avformat"
2024 avfilter_deps="avutil"
2025 avformat_deps="avutil avcodec"
2026 avresample_deps="avutil"
2027 postproc_deps="avutil gpl"
2028 swscale_deps="avutil"
2029
2030 # programs
2031 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2032 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2033                setpts_filter null_filter anull_filter ffabuffersink_filter"
2034 ffplay_deps="avcodec avformat swscale swresample sdl"
2035 ffplay_select="ffbuffersink_filter rdft crop_filter"
2036 ffprobe_deps="avcodec avformat"
2037 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2038 ffserver_extralibs='$ldl'
2039
2040 # documentation
2041 podpages_deps="perl"
2042 manpages_deps="perl pod2man"
2043 htmlpages_deps="texi2html"
2044 txtpages_deps="makeinfo"
2045 doc_deps_any="manpages htmlpages podpages txtpages"
2046
2047 # default parameters
2048
2049 logfile="config.log"
2050
2051 # installation paths
2052 prefix_default="/usr/local"
2053 bindir_default='${prefix}/bin'
2054 datadir_default='${prefix}/share/ffmpeg'
2055 incdir_default='${prefix}/include'
2056 libdir_default='${prefix}/lib'
2057 mandir_default='${prefix}/share/man'
2058 shlibdir_default="$libdir_default"
2059
2060 # toolchain
2061 ar_default="ar"
2062 cc_default="gcc"
2063 cxx_default="g++"
2064 host_cc_default="gcc"
2065 cp_f="cp -f"
2066 install="install"
2067 ln_s="ln -sf"
2068 nm_default="nm -g"
2069 objformat="elf"
2070 pkg_config_default=pkg-config
2071 ranlib="ranlib"
2072 strip_default="strip"
2073 yasmexe_default="yasm"
2074
2075 nogas=":"
2076
2077 # machine
2078 arch_default=$(uname -m)
2079 cpu="generic"
2080
2081 # OS
2082 target_os_default=$(tolower $(uname -s))
2083 host_os=$target_os_default
2084
2085 # configurable options
2086 enable $PROGRAM_LIST
2087 enable $DOCUMENT_LIST
2088 enable $(filter_out avresample $LIBRARY_LIST)
2089 enable stripping
2090
2091 enable asm
2092 enable debug
2093 enable doc
2094 enable optimizations
2095 enable runtime_cpudetect
2096 enable safe_bitstream_reader
2097 enable static
2098 enable swscale_alpha
2099
2100 # build settings
2101 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2102 FFSERVERLDFLAGS=-Wl,-E
2103 LIBPREF="lib"
2104 LIBSUF=".a"
2105 FULLNAME='$(NAME)$(BUILDSUF)'
2106 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2107 SLIBPREF="lib"
2108 SLIBSUF=".so"
2109 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2110 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2111 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2112 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2113 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2114 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2115
2116 asflags_filter=echo
2117 cflags_filter=echo
2118 ldflags_filter=echo
2119
2120 AS_C='-c'
2121 AS_O='-o $@'
2122 CC_C='-c'
2123 CC_E='-E -o $@'
2124 CC_O='-o $@'
2125 CXX_C='-c'
2126 CXX_O='-o $@'
2127 LD_O='-o $@'
2128 LD_LIB='-l%'
2129 LD_PATH='-L'
2130 HOSTCC_C='-c'
2131 HOSTCC_O='-o $@'
2132 HOSTLD_O='-o $@'
2133
2134 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
2135 host_libs='-lm'
2136 host_cflags_filter=echo
2137 host_ldflags_filter=echo
2138
2139 target_path='$(CURDIR)'
2140
2141 # since the object filename is not given with the -MM flag, the compiler
2142 # is only able to print the basename, and we must add the path ourselves
2143 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2144 DEPFLAGS='-MM'
2145
2146 # find source path
2147 if test -f configure; then
2148     source_path=.
2149 else
2150     source_path=$(cd $(dirname "$0"); pwd)
2151     echo "$source_path" | grep -q '[[:blank:]]' &&
2152         die "Out of tree builds are impossible with whitespace in source path."
2153     test -e "$source_path/config.h" &&
2154         die "Out of tree builds are impossible with config.h in source dir."
2155 fi
2156
2157 for v in "$@"; do
2158     r=${v#*=}
2159     l=${v%"$r"}
2160     r=$(sh_quote "$r")
2161     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2162 done
2163
2164 find_things(){
2165     thing=$1
2166     pattern=$2
2167     file=$source_path/$3
2168     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2169 }
2170
2171 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2172 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2173 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2174 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2175 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2176 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2177 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2178 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2179 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2180 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2181 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2182
2183 ALL_COMPONENTS="
2184     $BSF_LIST
2185     $DECODER_LIST
2186     $DEMUXER_LIST
2187     $ENCODER_LIST
2188     $FILTER_LIST
2189     $HWACCEL_LIST
2190     $INDEV_LIST
2191     $MUXER_LIST
2192     $OUTDEV_LIST
2193     $PARSER_LIST
2194     $PROTOCOL_LIST
2195 "
2196
2197 for n in $COMPONENT_LIST; do
2198     v=$(toupper ${n%s})_LIST
2199     eval enable \$$v
2200     eval ${n}_if_any="\$$v"
2201 done
2202
2203 enable $ARCH_EXT_LIST
2204
2205 die_unknown(){
2206     echo "Unknown option \"$1\"."
2207     echo "See $0 --help for available options."
2208     exit 1
2209 }
2210
2211 show_list() {
2212     suffix=_$1
2213     shift
2214     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
2215     exit 0
2216 }
2217
2218 rand_list(){
2219     IFS=', '
2220     set -- $*
2221     unset IFS
2222     for thing; do
2223         comp=${thing%:*}
2224         prob=${thing#$comp}
2225         prob=${prob#:}
2226         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2227         echo "prob ${prob:-0.5}"
2228         printf '%s\n' $comp
2229     done
2230 }
2231
2232 do_random(){
2233     action=$1
2234     shift
2235     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2236     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2237 }
2238
2239 for opt do
2240     optval="${opt#*=}"
2241     case "$opt" in
2242         --extra-ldflags=*)
2243             add_ldflags $optval
2244         ;;
2245         --extra-libs=*)
2246             add_extralibs $optval
2247         ;;
2248         --disable-devices)
2249             disable $INDEV_LIST $OUTDEV_LIST
2250         ;;
2251         --enable-debug=*)
2252             debuglevel="$optval"
2253         ;;
2254         --disable-programs)
2255             disable $PROGRAM_LIST
2256         ;;
2257         --disable-everything)
2258             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2259         ;;
2260         --disable-all)
2261             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2262             disable $LIBRARY_LIST $PROGRAM_LIST doc
2263         ;;
2264         --enable-random|--disable-random)
2265             action=${opt%%-random}
2266             do_random ${action#--} $COMPONENT_LIST
2267         ;;
2268         --enable-random=*|--disable-random=*)
2269             action=${opt%%-random=*}
2270             do_random ${action#--} $optval
2271         ;;
2272         --enable-*=*|--disable-*=*)
2273             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2274             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2275             eval list=\$$(toupper $thing)_LIST
2276             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2277             list=$(filter "$name" $list)
2278             [ "$list" = "" ] && warn "Option $opt did not match anything"
2279             $action $list
2280         ;;
2281         --enable-?*|--disable-?*)
2282             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2283             if is_in $option $COMPONENT_LIST; then
2284                 test $action = disable && action=unset
2285                 eval $action \$$(toupper ${option%s})_LIST
2286             elif is_in $option $CMDLINE_SELECT; then
2287                 $action $option
2288             else
2289                 die_unknown $opt
2290             fi
2291         ;;
2292         --list-*)
2293             NAME="${opt#--list-}"
2294             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2295             NAME=${NAME%s}
2296             eval show_list $NAME \$$(toupper $NAME)_LIST
2297         ;;
2298         --help|-h) show_help
2299         ;;
2300         --fatal-warnings) enable fatal_warnings
2301         ;;
2302         *)
2303             optname="${opt%%=*}"
2304             optname="${optname#--}"
2305             optname=$(echo "$optname" | sed 's/-/_/g')
2306             if is_in $optname $CMDLINE_SET; then
2307                 eval $optname='$optval'
2308             elif is_in $optname $CMDLINE_APPEND; then
2309                 append $optname "$optval"
2310             else
2311                 die_unknown $opt
2312             fi
2313         ;;
2314     esac
2315 done
2316
2317 disabled logging && logfile=/dev/null
2318
2319 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2320 set >> $logfile
2321
2322 test -n "$cross_prefix" && enable cross_compile
2323
2324 if enabled cross_compile; then
2325     test -n "$arch" && test -n "$target_os" ||
2326         die "Must specify target arch and OS when cross-compiling"
2327 fi
2328
2329 ar_default="${cross_prefix}${ar_default}"
2330 cc_default="${cross_prefix}${cc_default}"
2331 cxx_default="${cross_prefix}${cxx_default}"
2332 nm_default="${cross_prefix}${nm_default}"
2333 pkg_config_default="${cross_prefix}${pkg_config_default}"
2334 ranlib="${cross_prefix}${ranlib}"
2335 strip_default="${cross_prefix}${strip_default}"
2336
2337 sysinclude_default="${sysroot}/usr/include"
2338
2339 case "$toolchain" in
2340     clang-asan)
2341         cc_default="clang"
2342         add_cflags  -faddress-sanitizer
2343         add_ldflags -faddress-sanitizer
2344     ;;
2345     clang-tsan)
2346         cc_default="clang"
2347         add_cflags  -fthread-sanitizer
2348         add_ldflags -fthread-sanitizer
2349     ;;
2350     msvc)
2351         cc_default="c99wrap cl"
2352         ld_default="c99wrap link"
2353         nm_default="dumpbin -symbols"
2354         ar_default="lib"
2355         target_os_default="win32"
2356     ;;
2357     ?*)
2358         die "Unknown toolchain $toolchain"
2359     ;;
2360 esac
2361
2362 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2363 enabled cross_compile || host_cc_default=$cc
2364 set_default host_cc
2365
2366 if ! $pkg_config --version >/dev/null 2>&1; then
2367     warn "$pkg_config not found, library detection may fail."
2368     pkg_config=false
2369 fi
2370
2371 exesuf() {
2372     case $1 in
2373         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2374     esac
2375 }
2376
2377 EXESUF=$(exesuf $target_os)
2378 HOSTEXESUF=$(exesuf $host_os)
2379
2380 # set temporary file name
2381 : ${TMPDIR:=$TEMPDIR}
2382 : ${TMPDIR:=$TMP}
2383 : ${TMPDIR:=/tmp}
2384
2385 if ! check_cmd mktemp -u XXXXXX; then
2386     # simple replacement for missing mktemp
2387     # NOT SAFE FOR GENERAL USE
2388     mktemp(){
2389         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2390     }
2391 fi
2392
2393 tmpfile(){
2394     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2395         (set -C; exec > $tmp) 2>/dev/null ||
2396         die "Unable to create temporary file in $TMPDIR."
2397     append TMPFILES $tmp
2398     eval $1=$tmp
2399 }
2400
2401 trap 'rm -f -- $TMPFILES' EXIT
2402
2403 tmpfile TMPASM .asm
2404 tmpfile TMPC   .c
2405 tmpfile TMPCPP .cpp
2406 tmpfile TMPE   $EXESUF
2407 tmpfile TMPH   .h
2408 tmpfile TMPO   .o
2409 tmpfile TMPS   .S
2410 tmpfile TMPSH  .sh
2411 tmpfile TMPV   .ver
2412
2413 unset -f mktemp
2414
2415 chmod +x $TMPE
2416
2417 # make sure we can execute files in $TMPDIR
2418 cat > $TMPSH 2>> $logfile <<EOF
2419 #! /bin/sh
2420 EOF
2421 chmod +x $TMPSH >> $logfile 2>&1
2422 if ! $TMPSH >> $logfile 2>&1; then
2423     cat <<EOF
2424 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2425 variable to another directory and make sure that it is not mounted noexec.
2426 EOF
2427     die "Sanity test failed."
2428 fi
2429
2430 ccc_flags(){
2431     for flag; do
2432         case $flag in
2433             -std=c99)           echo -c99                       ;;
2434             -mcpu=*)            echo -arch ${flag#*=}           ;;
2435             -mieee)             echo -ieee                      ;;
2436             -O*|-fast)          echo $flag                      ;;
2437             -fno-math-errno)    echo -assume nomath_errno       ;;
2438             -g)                 echo -g3                        ;;
2439             -Wall)              echo -msg_enable level2         ;;
2440             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2441             -Wl,*)              echo $flag                      ;;
2442             -f*|-W*)                                            ;;
2443             *)                  echo $flag                      ;;
2444         esac
2445    done
2446 }
2447
2448 msvc_flags(){
2449     for flag; do
2450         case $flag in
2451             -fomit-frame-pointer) echo -Oy ;;
2452             -g)                   echo -Z7 ;;
2453             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2454                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2455                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2456                                        -wd4554 \
2457                                        -wd4996 -wd4273 ;;
2458             -std=c99)             ;;
2459             -fno-math-errno)      ;;
2460             -fno-common)          ;;
2461             -fno-signed-zeros)    ;;
2462             -fPIC)                ;;
2463             -lz)                  echo zlib.lib ;;
2464             -lavifil32)           echo vfw32.lib ;;
2465             -lavicap32)           echo vfw32.lib user32.lib ;;
2466             -l*)                  echo ${flag#-l}.lib ;;
2467             *)                    echo $flag ;;
2468         esac
2469     done
2470 }
2471
2472 pgi_flags(){
2473     for flag; do
2474         case $flag in
2475             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2476             -fomit-frame-pointer) echo -Mnoframe ;;
2477             -g)                   echo -gopt ;;
2478             *)                    echo $flag ;;
2479         esac
2480     done
2481 }
2482
2483 suncc_flags(){
2484     for flag; do
2485         case $flag in
2486             -march=*|-mcpu=*)
2487                 case "${flag#*=}" in
2488                     native)                   echo -xtarget=native       ;;
2489                     v9|niagara)               echo -xarch=sparc          ;;
2490                     ultrasparc)               echo -xarch=sparcvis       ;;
2491                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2492                     i586|pentium)             echo -xchip=pentium        ;;
2493                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2494                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2495                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2496                     pentium4*)          echo -xtarget=pentium4           ;;
2497                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2498                     *-sse3)             echo -xarch=sse3                 ;;
2499                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2500                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2501                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2502                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2503                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2504                     k8|opteron|athlon64|athlon-fx)
2505                                               echo -xarch=sse2a          ;;
2506                     athlon*)                  echo -xarch=pentium_proa   ;;
2507                 esac
2508                 ;;
2509             -std=c99)             echo -xc99              ;;
2510             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2511             -fPIC)                echo -KPIC -xcode=pic32 ;;
2512             -W*,*)                echo $flag              ;;
2513             -f*-*|-W*|-mimpure-text)                      ;;
2514             -shared)              echo -G                 ;;
2515             *)                    echo $flag              ;;
2516         esac
2517     done
2518 }
2519
2520 tms470_flags(){
2521     for flag; do
2522         case $flag in
2523             -march=*|-mcpu=*)
2524                 case "${flag#*=}" in
2525                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2526                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2527                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2528                     armv6*|arm11*)          echo -mv=6   ;;
2529                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2530                                             echo -mv=5e  ;;
2531                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2532                 esac
2533                 ;;
2534             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2535             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2536             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2537             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2538             -msoft-float)   echo --float_support=vfplib       ;;
2539             -O[0-3]|-mf=*)  echo $flag                        ;;
2540             -g)             echo -g -mn                       ;;
2541             -pds=*)         echo $flag                        ;;
2542             -D*|-I*)        echo $flag                        ;;
2543             --gcc|--abi=*)  echo $flag                        ;;
2544             -me)            echo $flag                        ;;
2545         esac
2546     done
2547 }
2548
2549 probe_cc(){
2550     pfx=$1
2551     _cc=$2
2552
2553     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2554     unset _ld_o _ldflags _ld_lib _ld_path
2555     unset _depflags _DEPCMD _DEPFLAGS
2556     _flags_filter=echo
2557
2558     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2559         _type=llvm_gcc
2560         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2561         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2562         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2563         _cflags_speed='-O3'
2564         _cflags_size='-Os'
2565     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2566         _type=gcc
2567         gcc_version=$($_cc --version | head -n1)
2568         gcc_basever=$($_cc -dumpversion)
2569         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2570         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2571         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2572         if ! $_cc -dumpversion | grep -q '^2\.'; then
2573             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2574         fi
2575         _cflags_speed='-O3'
2576         _cflags_size='-Os'
2577     elif $_cc --version 2>/dev/null | grep -q Intel; then
2578         _type=icc
2579         _ident=$($_cc --version | head -n1)
2580         _depflags='-MMD'
2581         _cflags_speed='-O3'
2582         _cflags_size='-Os'
2583         _cflags_noopt='-O1'
2584     elif $_cc -v 2>&1 | grep -q xlc; then
2585         _type=xlc
2586         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2587         _cflags_speed='-O5'
2588         _cflags_size='-O5 -qcompact'
2589     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2590         _type=ccc
2591         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2592         _DEPFLAGS='-M'
2593         _cflags_speed='-fast'
2594         _cflags_size='-O1'
2595         _flags_filter=ccc_flags
2596     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2597         test -d "$sysroot" || die "No valid sysroot specified."
2598         _type=armcc
2599         _ident=$($_cc --vsn | head -n1)
2600         armcc_conf="$PWD/armcc.conf"
2601         $_cc --arm_linux_configure                 \
2602              --arm_linux_config_file="$armcc_conf" \
2603              --configure_sysroot="$sysroot"        \
2604              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2605              die "Error creating armcc configuration file."
2606         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2607         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2608         as_default="${cross_prefix}gcc"
2609         _depflags='-MMD'
2610         _cflags_speed='-O3'
2611         _cflags_size='-Os'
2612     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2613         _type=tms470
2614         _ident=$($_cc -version | head -n1 | tr -s ' ')
2615         _flags='--gcc --abi=eabi -me'
2616         _cc_e='-ppl -fe=$@'
2617         _cc_o='-fe=$@'
2618         _depflags='-ppa -ppd=$(@:.o=.d)'
2619         _cflags_speed='-O3 -mf=5'
2620         _cflags_size='-O3 -mf=2'
2621         _flags_filter=tms470_flags
2622     elif $_cc -v 2>&1 | grep -q clang; then
2623         _type=clang
2624         _ident=$($_cc --version | head -n1)
2625         _depflags='-MMD'
2626         _cflags_speed='-O3'
2627         _cflags_size='-Os'
2628     elif $_cc -V 2>&1 | grep -q Sun; then
2629         _type=suncc
2630         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2631         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2632         _DEPFLAGS='-xM1 -xc99'
2633         _ldflags='-std=c99'
2634         _cflags_speed='-O5'
2635         _cflags_size='-O5 -xspace'
2636         _flags_filter=suncc_flags
2637     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2638         _type=pathscale
2639         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2640         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2641         _cflags_speed='-O2'
2642         _cflags_size='-Os'
2643         _flags_filter='filter_out -Wdisabled-optimization'
2644     elif $_cc -v 2>&1 | grep -q Open64; then
2645         _type=open64
2646         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2647         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2648         _cflags_speed='-O2'
2649         _cflags_size='-Os'
2650         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2651     elif $_cc -V 2>&1 | grep -q Portland; then
2652         _type=pgi
2653         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2654         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2655         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2656         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2657         _cflags_noopt="-O1"
2658         _flags_filter=pgi_flags
2659     elif $_cc 2>&1 | grep -q Microsoft; then
2660         _type=msvc
2661         _ident=$($cc 2>&1 | head -n1)
2662         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2663         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2664         _cflags_speed="-O2"
2665         _cflags_size="-O1"
2666         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2667         if $_cc 2>&1 | grep -q Linker; then
2668             _ld_o='-out $@'
2669         else
2670             _ld_o='-Fe$@'
2671         fi
2672         _cc_o='-Fo $@'
2673         _cc_e='-P -Fi $@'
2674         _flags_filter=msvc_flags
2675         _ld_lib='lib%.a'
2676         _ld_path='-libpath:'
2677         _flags='-nologo'
2678         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2679         if [ $pfx = hostcc ]; then
2680             append _cflags -Dsnprintf=_snprintf
2681         fi
2682         disable stripping
2683     fi
2684
2685     eval ${pfx}_type=\$_type
2686     eval ${pfx}_ident=\$_ident
2687 }
2688
2689 set_ccvars(){
2690     eval ${1}_C=\${_cc_c-\${${1}_C}}
2691     eval ${1}_E=\${_cc_e-\${${1}_E}}
2692     eval ${1}_O=\${_cc_o-\${${1}_O}}
2693
2694     if [ -n "$_depflags" ]; then
2695         eval ${1}_DEPFLAGS=\$_depflags
2696     else
2697         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2698         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2699         eval DEP${1}FLAGS=\$_flags
2700     fi
2701 }
2702
2703 probe_cc cc "$cc"
2704 cflags_filter=$_flags_filter
2705 cflags_speed=$_cflags_speed
2706 cflags_size=$_cflags_size
2707 cflags_noopt=$_cflags_noopt
2708 add_cflags $_flags $_cflags
2709 cc_ldflags=$_ldflags
2710 set_ccvars CC
2711
2712 probe_cc hostcc "$host_cc"
2713 host_cflags_filter=$_flags_filter
2714 add_host_cflags  $_flags $_cflags
2715 set_ccvars HOSTCC
2716
2717 test -n "$cc_type" && enable $cc_type ||
2718     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2719
2720 : ${as_default:=$cc}
2721 : ${dep_cc_default:=$cc}
2722 : ${ld_default:=$cc}
2723 : ${host_ld_default:=$host_cc}
2724 set_default ar as dep_cc ld host_ld
2725
2726 probe_cc as "$as"
2727 asflags_filter=$_flags_filter
2728 add_asflags $_flags $_cflags
2729 set_ccvars AS
2730
2731 probe_cc ld "$ld"
2732 ldflags_filter=$_flags_filter
2733 add_ldflags $_flags $_ldflags
2734 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2735 LD_O=${_ld_o-$LD_O}
2736 LD_LIB=${_ld_lib-$LD_LIB}
2737 LD_PATH=${_ld_path-$LD_PATH}
2738
2739 probe_cc hostld "$host_ld"
2740 host_ldflags_filter=$_flags_filter
2741 add_host_ldflags $_flags $_ldflags
2742 HOSTLD_O=${_ld_o-$HOSTLD_O}
2743
2744 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2745     probe_cc depcc "$dep_cc"
2746     CCDEP=${_DEPCMD:-$DEPCMD}
2747     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2748     DEPCCFLAGS=$_flags
2749 fi
2750
2751 if $ar 2>&1 | grep -q Microsoft; then
2752     arflags="-nologo"
2753     ar_o='-out:$@'
2754 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2755     arflags="rq"
2756     ar_o='$@'
2757 else
2758     arflags="rc"
2759     ar_o='$@'
2760 fi
2761
2762 add_cflags $extra_cflags
2763 add_cxxflags $extra_cxxflags
2764 add_asflags $extra_cflags
2765
2766 if test -n "$sysroot"; then
2767     case "$cc_type" in
2768         gcc|llvm_gcc|clang)
2769             add_cppflags --sysroot="$sysroot"
2770             add_ldflags --sysroot="$sysroot"
2771         ;;
2772         tms470)
2773             add_cppflags -I"$sysinclude"
2774             add_ldflags  --sysroot="$sysroot"
2775         ;;
2776     esac
2777 fi
2778
2779 if test "$cpu" = host; then
2780     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2781
2782     case "$cc_type" in
2783         gcc|llvm_gcc)
2784             check_native(){
2785                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2786                 sed -n "/cc1.*$1=/{
2787                             s/.*$1=\\([^ ]*\\).*/\\1/
2788                             p
2789                             q
2790                         }" $TMPE
2791             }
2792             cpu=$(check_native -march || check_native -mcpu)
2793         ;;
2794     esac
2795
2796     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2797 fi
2798
2799 # Deal with common $arch aliases
2800 case "$arch" in
2801     aarch64|arm64)
2802         arch="aarch64"
2803     ;;
2804     arm*|iPad*)
2805         arch="arm"
2806     ;;
2807     mips*|IP*)
2808         arch="mips"
2809     ;;
2810     parisc*|hppa*)
2811         arch="parisc"
2812     ;;
2813     "Power Macintosh"|ppc*|powerpc*)
2814         arch="ppc"
2815     ;;
2816     s390|s390x)
2817         arch="s390"
2818     ;;
2819     sh4|sh)
2820         arch="sh4"
2821     ;;
2822     sun4u|sparc*)
2823         arch="sparc"
2824     ;;
2825     tilegx|tile-gx)
2826         arch="tilegx"
2827     ;;
2828     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2829         arch="x86"
2830     ;;
2831 esac
2832
2833 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2834 enable $arch
2835
2836 # Add processor-specific flags
2837 if enabled aarch64; then
2838
2839     case $cpu in
2840         armv*)
2841             cpuflags="-march=$cpu"
2842         ;;
2843         *)
2844             cpuflags="-mcpu=$cpu"
2845         ;;
2846     esac
2847
2848 elif enabled alpha; then
2849
2850     cpuflags="-mcpu=$cpu"
2851
2852 elif enabled arm; then
2853
2854     check_arm_arch() {
2855         check_cpp_condition stddef.h \
2856             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2857             $cpuflags
2858     }
2859
2860     probe_arm_arch() {
2861         if   check_arm_arch 4;        then echo armv4;
2862         elif check_arm_arch 4T;       then echo armv4t;
2863         elif check_arm_arch 5;        then echo armv5;
2864         elif check_arm_arch 5E;       then echo armv5e;
2865         elif check_arm_arch 5T;       then echo armv5t;
2866         elif check_arm_arch 5TE;      then echo armv5te;
2867         elif check_arm_arch 5TEJ;     then echo armv5te;
2868         elif check_arm_arch 6;        then echo armv6;
2869         elif check_arm_arch 6J;       then echo armv6j;
2870         elif check_arm_arch 6K;       then echo armv6k;
2871         elif check_arm_arch 6Z;       then echo armv6z;
2872         elif check_arm_arch 6ZK;      then echo armv6zk;
2873         elif check_arm_arch 6T2;      then echo armv6t2;
2874         elif check_arm_arch 7;        then echo armv7;
2875         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2876         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2877         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2878         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2879         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2880         fi
2881     }
2882
2883     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2884
2885     case $cpu in
2886         armv*)
2887             cpuflags="-march=$cpu"
2888             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2889         ;;
2890         *)
2891             cpuflags="-mcpu=$cpu"
2892             case $cpu in
2893                 cortex-a*)                               subarch=armv7a  ;;
2894                 cortex-r*)                               subarch=armv7r  ;;
2895                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2896                 arm11*)                                  subarch=armv6   ;;
2897                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2898                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2899                 *)                             subarch=$(probe_arm_arch) ;;
2900             esac
2901         ;;
2902     esac
2903
2904     case "$subarch" in
2905         armv5t*)    enable fast_clz                ;;
2906         armv[6-8]*) enable fast_clz fast_unaligned ;;
2907     esac
2908
2909 elif enabled avr32; then
2910
2911     case $cpu in
2912         ap7[02]0[0-2])
2913             subarch="avr32_ap"
2914             cpuflags="-mpart=$cpu"
2915         ;;
2916         ap)
2917             subarch="avr32_ap"
2918             cpuflags="-march=$cpu"
2919         ;;
2920         uc3[ab]*)
2921             subarch="avr32_uc"
2922             cpuflags="-mcpu=$cpu"
2923         ;;
2924         uc)
2925             subarch="avr32_uc"
2926             cpuflags="-march=$cpu"
2927         ;;
2928     esac
2929
2930 elif enabled bfin; then
2931
2932     cpuflags="-mcpu=$cpu"
2933
2934 elif enabled mips; then
2935
2936     cpuflags="-march=$cpu"
2937
2938     case $cpu in
2939         24kc)
2940             disable mipsfpu
2941             disable mipsdspr1
2942             disable mipsdspr2
2943         ;;
2944         24kf*)
2945             disable mipsdspr1
2946             disable mipsdspr2
2947         ;;
2948         24kec|34kc|1004kc)
2949             disable mipsfpu
2950             disable mipsdspr2
2951         ;;
2952         24kef*|34kf*|1004kf*)
2953             disable mipsdspr2
2954         ;;
2955         74kc)
2956             disable mipsfpu
2957         ;;
2958     esac
2959
2960 elif enabled ppc; then
2961
2962     case $(tolower $cpu) in
2963         601|ppc601|powerpc601)
2964             cpuflags="-mcpu=601"
2965             disable altivec
2966         ;;
2967         603*|ppc603*|powerpc603*)
2968             cpuflags="-mcpu=603"
2969             disable altivec
2970         ;;
2971         604*|ppc604*|powerpc604*)
2972             cpuflags="-mcpu=604"
2973             disable altivec
2974         ;;
2975         g3|75*|ppc75*|powerpc75*)
2976             cpuflags="-mcpu=750"
2977             disable altivec
2978         ;;
2979         g4|745*|ppc745*|powerpc745*)
2980             cpuflags="-mcpu=7450"
2981         ;;
2982         74*|ppc74*|powerpc74*)
2983             cpuflags="-mcpu=7400"
2984         ;;
2985         g5|970|ppc970|powerpc970)
2986             cpuflags="-mcpu=970"
2987         ;;
2988         power[3-7]*)
2989             cpuflags="-mcpu=$cpu"
2990         ;;
2991         cell)
2992             cpuflags="-mcpu=cell"
2993             enable ldbrx
2994         ;;
2995         e500mc)
2996             cpuflags="-mcpu=e500mc"
2997             disable altivec
2998         ;;
2999         e500v2)
3000             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3001             disable altivec
3002         ;;
3003         e500)
3004             cpuflags="-mcpu=8540 -mhard-float"
3005             disable altivec
3006         ;;
3007     esac
3008
3009 elif enabled sparc; then
3010
3011     case $cpu in
3012         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3013             cpuflags="-mcpu=$cpu"
3014             disable vis
3015         ;;
3016         ultrasparc*|niagara[234])
3017             cpuflags="-mcpu=$cpu"
3018         ;;
3019     esac
3020
3021 elif enabled x86; then
3022
3023     case $cpu in
3024         i[345]86|pentium)
3025             cpuflags="-march=$cpu"
3026             disable mmx
3027         ;;
3028         # targets that do NOT support conditional mov (cmov)
3029         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3030             cpuflags="-march=$cpu"
3031             disable cmov
3032         ;;
3033         # targets that do support conditional mov (cmov)
3034         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3035             cpuflags="-march=$cpu"
3036             enable cmov
3037             enable fast_cmov
3038         ;;
3039         # targets that do support conditional mov but on which it's slow
3040         pentium4|pentium4m|prescott|nocona)
3041             cpuflags="-march=$cpu"
3042             enable cmov
3043             disable fast_cmov
3044         ;;
3045     esac
3046
3047 fi
3048
3049 if [ "$cpu" != generic ]; then
3050     add_cflags  $cpuflags
3051     add_asflags $cpuflags
3052 fi
3053
3054 # compiler sanity check
3055 check_exec <<EOF
3056 int main(void){ return 0; }
3057 EOF
3058 if test "$?" != 0; then
3059     echo "$cc is unable to create an executable file."
3060     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3061         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3062         echo "Only do this if you know what cross compiling means."
3063     fi
3064     die "C compiler test failed."
3065 fi
3066
3067 add_cppflags -D_ISOC99_SOURCE
3068 add_cxxflags -D__STDC_CONSTANT_MACROS
3069 check_cflags -std=c99
3070 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3071 #include <stdlib.h>
3072 EOF
3073 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3074 #include <stdlib.h>
3075 EOF
3076
3077 check_host_cflags -std=c99
3078 check_host_cflags -Wall
3079
3080 check_64bit(){
3081     arch32=$1
3082     arch64=$2
3083     expr=$3
3084     check_code cc "" "int test[2*($expr) - 1]" &&
3085         subarch=$arch64 || subarch=$arch32
3086 }
3087
3088 case "$arch" in
3089     aarch64|alpha|ia64)
3090         spic=$shared
3091     ;;
3092     mips)
3093         check_64bit mips mips64 '_MIPS_SIM > 1'
3094         spic=$shared
3095     ;;
3096     parisc)
3097         check_64bit parisc parisc64 'sizeof(void *) > 4'
3098         spic=$shared
3099     ;;
3100     ppc)
3101         check_64bit ppc ppc64 'sizeof(void *) > 4'
3102         spic=$shared
3103     ;;
3104     sparc)
3105         check_64bit sparc sparc64 'sizeof(void *) > 4'
3106         spic=$shared
3107     ;;
3108     x86)
3109         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3110         if test "$subarch" = "x86_64"; then
3111             spic=$shared
3112         fi
3113     ;;
3114     ppc)
3115         check_cc <<EOF && subarch="ppc64"
3116         int test[(int)sizeof(char*) - 7];
3117 EOF
3118     ;;
3119 esac
3120
3121 enable $subarch
3122 enabled spic && enable pic
3123
3124 # OS specific
3125 case $target_os in
3126     haiku)
3127         prefix_default="/boot/common"
3128         network_extralibs="-lnetwork"
3129         host_libs=
3130         ;;
3131     sunos)
3132         FFSERVERLDFLAGS=""
3133         SHFLAGS='-shared -Wl,-h,$$(@F)'
3134         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3135         network_extralibs="-lsocket -lnsl"
3136         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3137         # When using suncc to build, the Solaris linker will mark
3138         # an executable with each instruction set encountered by
3139         # the Solaris assembler.  As our libraries contain their own
3140         # guards for processor-specific code, instead suppress
3141         # generation of the HWCAPS ELF section on Solaris x86 only.
3142         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3143         nm_default='nm -P -g'
3144         ;;
3145     netbsd)
3146         disable symver
3147         oss_indev_extralibs="-lossaudio"
3148         oss_outdev_extralibs="-lossaudio"
3149         enabled gcc || check_ldflags -Wl,-zmuldefs
3150         ;;
3151     openbsd|bitrig)
3152         # On OpenBSD 4.5. the compiler does not use PIC unless
3153         # explicitly using -fPIC. FFmpeg builds fine without PIC,
3154         # however the generated executable will not do anything
3155         # (simply quits with exit-code 1, no crash, no output).
3156         # Thus explicitly enable PIC here.
3157         enable pic
3158         disable symver
3159         SHFLAGS='-shared'
3160         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
3161         SLIB_INSTALL_LINKS=
3162         oss_indev_extralibs="-lossaudio"
3163         oss_outdev_extralibs="-lossaudio"
3164         ;;
3165     dragonfly)
3166         disable symver
3167         ;;
3168     freebsd)
3169         ;;
3170     bsd/os)
3171         add_extralibs -lpoll -lgnugetopt
3172         strip="strip -d"
3173         ;;
3174     darwin)
3175         gas="gas-preprocessor.pl $cc"
3176         enabled ppc && add_asflags -force_cpusubtype_ALL
3177         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3178         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3179         strip="${strip} -x"
3180         add_ldflags -Wl,-dynamic,-search_paths_first
3181         SLIBSUF=".dylib"
3182         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3183         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3184         FFSERVERLDFLAGS=-Wl,-bind_at_load
3185         objformat="macho"
3186         enabled x86_64 && objformat="macho64"
3187         enabled_any pic shared ||
3188             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3189         ;;
3190     mingw32*)
3191         if test $target_os = "mingw32ce"; then
3192             disable network
3193         else
3194             target_os=mingw32
3195         fi
3196         LIBTARGET=i386
3197         if enabled x86_64; then
3198             LIBTARGET="i386:x86-64"
3199         elif enabled arm; then
3200             LIBTARGET=arm-wince
3201         fi
3202         shlibdir_default="$bindir_default"
3203         SLIBPREF=""
3204         SLIBSUF=".dll"
3205         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3206         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3207         dlltool="${cross_prefix}dlltool"
3208         if check_cmd lib.exe -list; then
3209             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3210             if enabled x86_64; then
3211                 LIBTARGET=x64
3212             fi
3213         elif check_cmd $dlltool --version; then
3214             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3215         fi
3216         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3217         SLIB_INSTALL_LINKS=
3218         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3219         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3220         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3221         objformat="win32"
3222         ranlib=:
3223         enable dos_paths
3224         add_cppflags -U__STRICT_ANSI__
3225         ;;
3226     win32|win64)
3227         if enabled shared; then
3228             # Link to the import library instead of the normal static library
3229             # for shared libs.
3230             LD_LIB='%.lib'
3231             # Cannot build shared and static libraries at the same time with
3232             # MSVC.
3233             disable static
3234         fi
3235         shlibdir_default="$bindir_default"
3236         SLIBPREF=""
3237         SLIBSUF=".dll"
3238         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3239         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3240         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3241         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3242         SLIB_INSTALL_LINKS=
3243         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3244         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3245         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3246         objformat="win32"
3247         ranlib=:
3248         enable dos_paths
3249         ;;
3250     cygwin*)
3251         target_os=cygwin
3252         shlibdir_default="$bindir_default"
3253         SLIBPREF="cyg"
3254         SLIBSUF=".dll"
3255         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3256         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3257         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3258         SLIB_INSTALL_LINKS=
3259         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3260         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3261         objformat="win32"
3262         enable dos_paths
3263         ;;
3264     *-dos|freedos|opendos)
3265         network_extralibs="-lsocket"
3266         objformat="coff"
3267         enable dos_paths
3268         add_cppflags -U__STRICT_ANSI__
3269         ;;
3270     linux)
3271         enable dv1394
3272         ;;
3273     irix*)
3274         target_os=irix
3275         ranlib="echo ignoring ranlib"
3276         ;;
3277     os/2*)
3278         strip="lxlite -CS"
3279         ln_s="cp -f"
3280         objformat="aout"
3281         add_cppflags -D_GNU_SOURCE
3282         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3283         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3284         FFSERVERLDFLAGS=""
3285         LIBSUF="_s.a"
3286         SLIBPREF=""
3287         SLIBSUF=".dll"
3288         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3289         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3290         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3291             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3292             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3293             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3294             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3295             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3296         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3297             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3298         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3299         enable dos_paths
3300         enable_weak os2threads
3301         ;;
3302     gnu/kfreebsd)
3303         add_cppflags -D_BSD_SOURCE
3304         ;;
3305     gnu)
3306         ;;
3307     qnx)
3308         add_cppflags -D_QNX_SOURCE
3309         network_extralibs="-lsocket"
3310         ;;
3311     symbian)
3312         SLIBSUF=".dll"
3313         enable dos_paths
3314         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3315         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3316         add_ldflags -Wl,--target1-abs,--no-undefined \
3317                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3318                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3319         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3320                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3321                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3322         ;;
3323     osf1)
3324         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3325         FFSERVERLDFLAGS=
3326         ;;
3327     minix)
3328         ;;
3329     plan9)
3330         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3331                      -D_REENTRANT_SOURCE        \
3332                      -D_RESEARCH_SOURCE         \
3333                      -DFD_SETSIZE=96            \
3334                      -DHAVE_SOCK_OPTS
3335         add_compat strtod.o strtod=avpriv_strtod
3336         network_extralibs='-lbsd'
3337         exeobjs=compat/plan9/main.o
3338         disable ffserver
3339         ln_s='ln -s -f'
3340         cp_f='cp'
3341         ;;
3342     none)
3343         ;;
3344     *)
3345         die "Unknown OS '$target_os'."
3346         ;;
3347 esac
3348
3349 # determine libc flavour
3350
3351 if check_cpp_condition features.h "defined __UCLIBC__"; then
3352     libc_type=uclibc
3353     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3354 elif check_cpp_condition features.h "defined __GLIBC__"; then
3355     libc_type=glibc
3356     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3357 elif check_header _mingw.h; then
3358     libc_type=mingw
3359     check_cpp_condition _mingw.h \
3360         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3361             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3362         die "ERROR: MinGW runtime version must be >= 3.15."
3363     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3364             __MINGW64_VERSION_MAJOR < 3"; then
3365         add_compat msvcrt/snprintf.o
3366         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3367     fi
3368 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3369     libc_type=newlib
3370     add_cppflags -U__STRICT_ANSI__
3371 elif check_func_headers stdlib.h _get_doserrno; then
3372     libc_type=msvcrt
3373     add_compat strtod.o strtod=avpriv_strtod
3374     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3375                                  _snprintf=avpriv_snprintf  \
3376                                  vsnprintf=avpriv_vsnprintf
3377 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3378     libc_type=klibc
3379 fi
3380
3381 test -n "$libc_type" && enable $libc_type
3382
3383 # hacks for compiler/libc/os combinations
3384
3385 if enabled_all tms470 glibc; then
3386     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3387     add_cppflags -D__USER_LABEL_PREFIX__=
3388     add_cppflags -D__builtin_memset=memset
3389     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3390     add_cflags   -pds=48    # incompatible redefinition of macro
3391 fi
3392
3393 if enabled_all ccc glibc; then
3394     add_ldflags -Wl,-z,now  # calls to libots crash without this
3395 fi
3396
3397 esc(){
3398     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3399 }
3400
3401 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3402
3403 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3404
3405 set_default $PATHS_LIST
3406 set_default nm
3407
3408 # we need to build at least one lib type
3409 if ! enabled_any static shared; then
3410     cat <<EOF
3411 At least one library type must be built.
3412 Specify --enable-static to build the static libraries or --enable-shared to
3413 build the shared libraries as well. To only build the shared libraries specify
3414 --disable-static in addition to --enable-shared.
3415 EOF
3416     exit 1;
3417 fi
3418
3419 die_license_disabled() {
3420     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3421 }
3422
3423 die_license_disabled_gpl() {
3424     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3425 }
3426
3427 die_license_disabled gpl libcdio
3428 die_license_disabled gpl libutvideo
3429 die_license_disabled gpl libx264
3430 die_license_disabled gpl libxavs
3431 die_license_disabled gpl libxvid
3432 die_license_disabled gpl x11grab
3433
3434 die_license_disabled nonfree libaacplus
3435 die_license_disabled nonfree libfaac
3436 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3437 enabled gpl && die_license_disabled_gpl nonfree openssl
3438
3439 die_license_disabled version3 libopencore_amrnb
3440 die_license_disabled version3 libopencore_amrwb
3441 die_license_disabled version3 libvo_aacenc
3442 die_license_disabled version3 libvo_amrwbenc
3443
3444 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3445
3446 disabled optimizations || check_cflags -fomit-frame-pointer
3447
3448 enable_pic() {
3449     enable pic
3450     add_cppflags -DPIC
3451     add_cflags   -fPIC
3452     add_asflags  -fPIC
3453 }
3454
3455 enabled pic && enable_pic
3456
3457 check_cc <<EOF || die "Symbol mangling check failed."
3458 int ff_extern;
3459 EOF
3460 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3461 extern_prefix=${sym%%ff_extern*}
3462
3463 check_cc <<EOF && enable_weak inline_asm
3464 void foo(void) { __asm__ volatile ("" ::); }
3465 EOF
3466
3467 _restrict=
3468 for restrict_keyword in restrict __restrict__ __restrict; do
3469     check_cc <<EOF && _restrict=$restrict_keyword && break
3470 void foo(char * $restrict_keyword p);
3471 EOF
3472 done
3473
3474 check_cc <<EOF && enable attribute_packed
3475 struct { int x; } __attribute__((packed)) x;
3476 EOF
3477
3478 check_cc <<EOF && enable attribute_may_alias
3479 union { int x; } __attribute__((may_alias)) x;
3480 EOF
3481
3482 check_cc <<EOF || die "endian test failed"
3483 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3484 EOF
3485 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3486
3487 if enabled alpha; then
3488
3489     check_cflags -mieee
3490
3491 elif enabled arm; then
3492
3493     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3494 float func(float a, float b){ return a+b; }
3495 EOF
3496
3497     enabled thumb && check_cflags -mthumb || check_cflags -marm
3498     nogas=die
3499
3500     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3501         enable vfp_args
3502     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3503         case "${cross_prefix:-$cc}" in
3504             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3505             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3506 __asm__ (".eabi_attribute 28, 1");
3507 int main(void) { return 0; }
3508 EOF
3509         esac
3510         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3511     fi
3512
3513     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3514     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3515     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3516     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3517     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3518     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3519
3520     [ $target_os = linux ] ||
3521         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3522             $ARCH_EXT_LIST_ARM
3523
3524     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3525     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3526
3527     enabled_all armv6t2 shared !pic && enable_pic
3528
3529 elif enabled mips; then
3530
3531     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3532     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3533      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3534     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3535      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3536     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3537      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3538     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3539      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3540
3541 elif enabled parisc; then
3542
3543     if enabled gcc; then
3544         case $($cc -dumpversion) in
3545             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3546         esac
3547     fi
3548
3549 elif enabled ppc; then
3550
3551     enable local_aligned_8 local_aligned_16
3552
3553     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3554     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3555     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3556     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3557
3558     # AltiVec flags: The FSF version of GCC differs from the Apple version
3559     if enabled altivec; then
3560         nogas=warn
3561         check_cflags -maltivec -mabi=altivec &&
3562         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3563         check_cflags -faltivec
3564
3565         # check if our compiler supports Motorola AltiVec C API
3566         check_cc <<EOF || disable altivec
3567 $inc_altivec_h
3568 int main(void) {
3569     vector signed int v1 = (vector signed int) { 0 };
3570     vector signed int v2 = (vector signed int) { 1 };
3571     v1 = vec_add(v1, v2);
3572     return 0;
3573 }
3574 EOF
3575
3576         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3577     fi
3578
3579 elif enabled sparc; then
3580
3581     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3582
3583 elif enabled x86; then
3584
3585     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3586
3587     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3588
3589     enable local_aligned_8 local_aligned_16
3590
3591     # check whether EBP is available on x86
3592     # As 'i' is stored on the stack, this program will crash
3593     # if the base pointer is used to access it because the
3594     # base pointer is cleared in the inline assembly code.
3595     check_exec_crash <<EOF && enable ebp_available
3596 volatile int i=0;
3597 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3598 return i;
3599 EOF
3600
3601     # check whether EBX is available on x86
3602     check_inline_asm ebx_available '""::"b"(0)' &&
3603         check_inline_asm ebx_available '"":::"%ebx"'
3604
3605     # check whether xmm clobbers are supported
3606     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3607
3608     # check whether binutils is new enough to compile SSSE3/MMXEXT
3609     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3610     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3611
3612     if ! disabled_any asm mmx yasm; then
3613         if check_cmd $yasmexe --version; then
3614             enabled x86_64 && yasm_extra="-m amd64"
3615             yasm_debug="-g dwarf2"
3616         elif check_cmd nasm -v; then
3617             yasmexe=nasm
3618             yasm_debug="-g -F dwarf"
3619             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3620         fi
3621
3622         YASMFLAGS="-f $objformat $yasm_extra"
3623         enabled pic               && append YASMFLAGS "-DPIC"
3624         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3625         case "$objformat" in
3626             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3627         esac
3628
3629         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3630             die "yasm not found, use --disable-yasm for a crippled build"
3631         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3632         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3633         check_yasm "CPU amdnop" && enable cpunop
3634     fi
3635
3636     case "$cpu" in
3637         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3638             disable fast_clz
3639         ;;
3640     esac
3641
3642 fi
3643
3644 if enabled asm; then
3645     as=${gas:=$as}
3646     check_as <<EOF && enable gnu_as || \
3647         $nogas "GNU assembler not found, install gas-preprocessor"
3648 .macro m n
3649 \n: .int 0
3650 .endm
3651 m x
3652 EOF
3653 fi
3654
3655 check_ldflags -Wl,--as-needed
3656
3657 if check_func dlopen; then
3658     ldl=
3659 elif check_func dlopen -ldl; then
3660     ldl=-ldl
3661 fi
3662
3663 if ! disabled network; then
3664     check_type "sys/types.h sys/socket.h" socklen_t
3665     check_type netdb.h "struct addrinfo"
3666     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3667     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3668     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3669     check_type netinet/in.h "struct sockaddr_in6"
3670     check_type poll.h "struct pollfd"
3671     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3672     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3673     check_type netinet/sctp.h "struct sctp_event_subscribe"
3674     check_func getaddrinfo $network_extralibs
3675     check_func getservbyport $network_extralibs
3676     # Prefer arpa/inet.h over winsock2
3677     if check_header arpa/inet.h ; then
3678         check_func closesocket
3679     elif check_header winsock2.h ; then
3680         check_func_headers winsock2.h closesocket -lws2 &&
3681             network_extralibs="-lws2" ||
3682         { check_func_headers winsock2.h closesocket -lws2_32 &&
3683             network_extralibs="-lws2_32"; }
3684         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3685         check_type ws2tcpip.h socklen_t
3686         check_type ws2tcpip.h "struct addrinfo"
3687         check_type ws2tcpip.h "struct group_source_req"
3688         check_type ws2tcpip.h "struct ip_mreq_source"
3689         check_type ws2tcpip.h "struct ipv6_mreq"
3690         check_type winsock2.h "struct pollfd"
3691         check_type ws2tcpip.h "struct sockaddr_in6"
3692         check_type ws2tcpip.h "struct sockaddr_storage"
3693         check_struct winsock2.h "struct sockaddr" sa_len
3694     else
3695         disable network
3696     fi
3697 fi
3698
3699 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3700 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3701
3702 check_func  access
3703 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3704 check_func  fcntl
3705 check_func  fork
3706 check_func  gethrtime
3707 check_func  getopt
3708 check_func  getrusage
3709 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3710 check_func  gettimeofday
3711 check_func  inet_aton $network_extralibs
3712 check_func  isatty
3713 check_func  localtime_r
3714 check_func  ${malloc_prefix}memalign            && enable memalign
3715 check_func  mkstemp
3716 check_func  mmap
3717 check_func  mprotect
3718 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3719 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3720 check_func  setrlimit
3721 check_func  strerror_r
3722 check_func  sched_getaffinity
3723 check_func  sysconf
3724 check_func  sysctl
3725 check_func  usleep
3726 check_func_headers conio.h kbhit
3727 check_func_headers windows.h PeekNamedPipe
3728 check_func_headers io.h setmode
3729 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3730 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3731 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3732 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3733 check_func_headers windows.h GetProcessAffinityMask
3734 check_func_headers windows.h GetProcessTimes
3735 check_func_headers windows.h GetSystemTimeAsFileTime
3736 check_func_headers windows.h MapViewOfFile
3737 check_func_headers windows.h SetConsoleTextAttribute
3738 check_func_headers windows.h Sleep
3739 check_func_headers windows.h VirtualAlloc
3740 check_func_headers glob.h glob
3741
3742 check_header direct.h
3743 check_header dlfcn.h
3744 check_header dxva.h
3745 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3746 check_header io.h
3747 check_header libcrystalhd/libcrystalhd_if.h
3748 check_header malloc.h
3749 check_header poll.h
3750 check_header sys/mman.h
3751 check_header sys/param.h
3752 check_header sys/resource.h
3753 check_header sys/select.h
3754 check_header sys/time.h
3755 check_header termios.h
3756 check_header unistd.h
3757 check_header vdpau/vdpau.h
3758 check_header vdpau/vdpau_x11.h
3759 check_header windows.h
3760 check_header X11/extensions/XvMClib.h
3761 check_header asm/types.h
3762
3763 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3764 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3765
3766 # check for VDA header
3767 if ! disabled vda && ! enabled ppc; then
3768     if check_header VideoDecodeAcceleration/VDADecoder.h; then
3769         enable vda
3770         add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3771     fi
3772 fi
3773
3774 if ! disabled w32threads && ! enabled pthreads; then
3775     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3776 fi
3777
3778 # check for some common methods of building with pthread support
3779 # do this before the optional library checks as some of them require pthreads
3780 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3781     enable pthreads
3782     if check_func pthread_create; then
3783         :
3784     elif check_func pthread_create -pthread; then
3785         add_cflags -pthread
3786         add_extralibs -pthread
3787     elif check_func pthread_create -pthreads; then
3788         add_cflags -pthreads
3789         add_extralibs -pthreads
3790     elif check_func pthread_create -lpthreadGC2; then
3791         add_extralibs -lpthreadGC2
3792     elif ! check_lib pthread.h pthread_create -lpthread; then
3793         disable pthreads
3794     fi
3795 fi
3796
3797 for thread in $THREADS_LIST; do
3798     if enabled $thread; then
3799         test -n "$thread_type" &&
3800             die "ERROR: Only one thread type must be selected." ||
3801             thread_type="$thread"
3802     fi
3803 done
3804
3805 if enabled pthreads; then
3806   check_func pthread_cancel
3807 fi
3808
3809 check_lib math.h sin -lm && LIBM="-lm"
3810 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3811 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3812
3813 atan2f_args=2
3814 ldexpf_args=2
3815 powf_args=2
3816
3817 for func in $MATH_FUNCS; do
3818     eval check_mathfunc $func \${${func}_args:-1}
3819 done
3820
3821 # these are off by default, so fail if requested and not available
3822 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3823 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3824 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3825 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3826 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3827 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3828 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3829 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3830 enabled libcdio    && require2 libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3831 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3832                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3833                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3834 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3835 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3836 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3837 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"
3838 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3839 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3840 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
3841 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3842 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3843 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3844 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3845 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3846 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3847 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3848 enabled libopenjpeg && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
3849                          check_lib openjpeg.h opj_version -lopenjpeg ||
3850                          die "ERROR: libopenjpeg not found"; }
3851 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3852 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3853 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3854 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3855 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3856 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3857 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3858     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3859     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3860 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3861 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3862                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3863                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3864 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3865 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3866 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3867 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3868 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3869 enabled libvpx     && {
3870     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3871                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3872     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 ||
3873                                 die "ERROR: libvpx encoder version must be >=0.9.7"; }
3874     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3875     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3876 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3877                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3878                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3879 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3880 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3881 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3882                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3883                         die "ERROR: openal not found"; } &&
3884                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3885                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3886 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3887                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3888                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3889                         die "ERROR: openssl not found"; }
3890
3891 if enabled gnutls; then
3892     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3893     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3894 fi
3895
3896 # libdc1394 check
3897 if enabled libdc1394; then
3898     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3899         enable libdc1394_2; } ||
3900     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3901         enable libdc1394_1; } ||
3902     die "ERROR: No version of libdc1394 found "
3903 fi
3904
3905 SDL_CONFIG="${cross_prefix}sdl-config"
3906 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3907     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3908     enable sdl &&
3909     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3910 else
3911   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3912     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3913     sdl_libs=$("${SDL_CONFIG}" --libs)
3914     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3915     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3916     enable sdl &&
3917     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3918   fi
3919 fi
3920 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3921
3922 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3923 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3924 perl --version > /dev/null 2>&1 && enable perl || disable perl
3925 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3926 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
3927
3928 check_header linux/fb.h
3929 check_header linux/videodev.h
3930 check_header linux/videodev2.h
3931 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
3932
3933 check_header sys/videoio.h
3934
3935 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3936 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3937 # w32api 3.12 had it defined wrong
3938 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3939
3940 check_type "dshow.h" IBaseFilter
3941
3942 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3943 { check_header dev/bktr/ioctl_meteor.h &&
3944   check_header dev/bktr/ioctl_bt848.h; } ||
3945 { check_header machine/ioctl_meteor.h &&
3946   check_header machine/ioctl_bt848.h; } ||
3947 { check_header dev/video/meteor/ioctl_meteor.h &&
3948   check_header dev/video/bktr/ioctl_bt848.h; } ||
3949 check_header dev/ic/bt8xx.h
3950
3951 check_header sndio.h
3952 if check_struct sys/soundcard.h audio_buf_info bytes; then
3953     enable_safe sys/soundcard.h
3954 else
3955     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3956     #include <sys/soundcard.h>
3957     audio_buf_info abc;
3958 EOF
3959 fi
3960 check_header soundcard.h
3961
3962 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3963
3964 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3965     check_func jack_port_get_latency_range -ljack
3966
3967 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3968
3969
3970 enabled x11grab                                           &&
3971 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3972 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3973 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3974
3975 if ! disabled vaapi; then
3976     check_lib va/va.h vaInitialize -lva && {
3977         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3978         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3979     } || disable vaapi
3980 fi
3981
3982 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3983     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3984         { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." && disable vdpau; }
3985 fi
3986
3987 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3988 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
3989 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"
3990
3991 # add some useful compiler flags if supported
3992 check_cflags -Wdeclaration-after-statement
3993 check_cflags -Wall
3994 check_cflags -Wno-parentheses
3995 check_cflags -Wno-switch
3996 check_cflags -Wno-format-zero-length
3997 check_cflags -Wdisabled-optimization
3998 check_cflags -Wpointer-arith
3999 check_cflags -Wredundant-decls
4000 check_cflags -Wno-pointer-sign
4001 check_cflags -Wwrite-strings
4002 check_cflags -Wtype-limits
4003 check_cflags -Wundef
4004 check_cflags -Wmissing-prototypes
4005 check_cflags -Wno-pointer-to-int-cast
4006 check_cflags -Wstrict-prototypes
4007 enabled extra_warnings && check_cflags -Winline
4008
4009 # add some linker flags
4010 check_ldflags -Wl,--warn-common
4011 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4012 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4013
4014 enabled xmm_clobber_test &&
4015     check_ldflags -Wl,--wrap,avcodec_open2              \
4016                   -Wl,--wrap,avcodec_decode_audio4      \
4017                   -Wl,--wrap,avcodec_decode_video2      \
4018                   -Wl,--wrap,avcodec_decode_subtitle2   \
4019                   -Wl,--wrap,avcodec_encode_audio2      \
4020                   -Wl,--wrap,avcodec_encode_video       \
4021                   -Wl,--wrap,avcodec_encode_subtitle    \
4022                   -Wl,--wrap,sws_scale ||
4023     disable xmm_clobber_test
4024
4025 echo "X{};" > $TMPV
4026 if test_ldflags -Wl,--version-script,$TMPV; then
4027     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4028     check_cc <<EOF && enable symver_asm_label
4029 void ff_foo(void) __asm__ ("av_foo@VERSION");
4030 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4031 EOF
4032     check_cc <<EOF && enable symver_gnu_asm
4033 __asm__(".symver ff_foo,av_foo@VERSION");
4034 void ff_foo(void) {}
4035 EOF
4036 fi
4037
4038 if [ -z "$optflags" ]; then
4039     if enabled small; then
4040         optflags=$cflags_size
4041     elif enabled optimizations; then
4042         optflags=$cflags_speed
4043     else
4044         optflags=$cflags_noopt
4045     fi
4046 fi
4047
4048 check_optflags(){
4049     check_cflags "$@"
4050     enabled lto && check_ldflags "$@"
4051 }
4052
4053
4054 if enabled lto; then
4055     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4056     check_cflags  -flto
4057     check_ldflags -flto $cpuflags
4058 fi
4059
4060 check_optflags $optflags
4061 check_optflags -fno-math-errno
4062 check_optflags -fno-signed-zeros
4063
4064 enabled ftrapv && check_cflags -ftrapv
4065
4066 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4067 int x;
4068 EOF
4069
4070
4071 if enabled icc; then
4072     # Just warnings, no remarks
4073     check_cflags -w1
4074     # -wd: Disable following warnings
4075     # 144, 167, 556: -Wno-pointer-sign
4076     # 188: enumerated type mixed with another type
4077     # 1292: attribute "foo" ignored
4078     # 1419: external declaration in primary source file
4079     # 10006: ignoring unknown option -fno-signed-zeros
4080     # 10148: ignoring unknown option -Wno-parentheses
4081     # 10156: ignoring option '-W'; no argument required
4082     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4083     # 11030: Warning unknown option --as-needed
4084     # 10156: ignoring option '-export'; no argument required
4085     check_ldflags -wd10156,11030
4086     # Allow to compile with optimizations
4087     check_ldflags -march=$cpu
4088     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4089     enable ebp_available
4090     if enabled x86_32; then
4091         icc_version=$($cc -dumpversion)
4092         test ${icc_version%%.*} -ge 11 &&
4093             check_cflags -falign-stack=maintain-16-byte ||
4094             disable aligned_stack
4095     fi
4096 elif enabled ccc; then
4097     # disable some annoying warnings
4098     add_cflags -msg_disable bitnotint
4099     add_cflags -msg_disable mixfuncvoid
4100     add_cflags -msg_disable nonstandcast
4101     add_cflags -msg_disable unsupieee
4102 elif enabled gcc; then
4103     check_optflags -fno-tree-vectorize
4104     check_cflags -Werror=implicit-function-declaration
4105     check_cflags -Werror=missing-prototypes
4106     check_cflags -Werror=return-type
4107     check_cflags -Werror=vla
4108 elif enabled llvm_gcc; then
4109     check_cflags -mllvm -stack-alignment=16
4110 elif enabled clang; then
4111     check_cflags -mllvm -stack-alignment=16
4112     check_cflags -Qunused-arguments
4113     check_cflags -Werror=implicit-function-declaration
4114     check_cflags -Werror=missing-prototypes
4115     check_cflags -Werror=return-type
4116 elif enabled armcc; then
4117     # 2523: use of inline assembler is deprecated
4118     add_cflags -W${armcc_opt},--diag_suppress=2523
4119     add_cflags -W${armcc_opt},--diag_suppress=1207
4120     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4121     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4122     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4123     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4124 elif enabled tms470; then
4125     add_cflags -pds=824 -pds=837
4126 elif enabled pathscale; then
4127     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4128 elif enabled msvc; then
4129     enabled x86_32 && disable aligned_stack
4130 fi
4131
4132 case $target_os in
4133     osf1)
4134         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4135     ;;
4136     plan9)
4137         add_cppflags -Dmain=plan9_main
4138     ;;
4139 esac
4140
4141 enabled_any $THREADS_LIST      && enable threads
4142
4143 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4144
4145 check_deps $CONFIG_LIST       \
4146            $CONFIG_EXTRA      \
4147            $HAVE_LIST         \
4148            $ALL_COMPONENTS    \
4149
4150
4151 if test $target_os = "haiku"; then
4152     disable memalign
4153     disable posix_memalign
4154 fi
4155
4156 ! enabled_any memalign posix_memalign aligned_malloc &&
4157     enabled_any $need_memalign && enable memalign_hack
4158
4159 # add_dep lib dep
4160 # -> enable ${lib}_deps_${dep}
4161 # -> add $dep to ${lib}_deps only once
4162 add_dep() {
4163     lib=$1
4164     dep=$2
4165     enabled "${lib}_deps_${dep}" && return 0
4166     enable  "${lib}_deps_${dep}"
4167     prepend "${lib}_deps" $dep
4168 }
4169
4170 # merge deps lib components
4171 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4172 merge_deps() {
4173     lib=$1
4174     shift
4175     for comp in $*; do
4176         enabled $comp || continue
4177         eval "dep=\"\$${comp}_deps\""
4178         for d in $dep; do
4179             add_dep $lib $d
4180         done
4181     done
4182 }
4183
4184 merge_deps libavfilter $FILTER_LIST
4185
4186 echo "install prefix            $prefix"
4187 echo "source path               $source_path"
4188 echo "C compiler                $cc"
4189 echo "ARCH                      $arch ($cpu)"
4190 if test "$build_suffix" != ""; then
4191     echo "build suffix              $build_suffix"
4192 fi
4193 if test "$progs_suffix" != ""; then
4194     echo "progs suffix              $progs_suffix"
4195 fi
4196 if test "$extra_version" != ""; then
4197     echo "version string suffix     $extra_version"
4198 fi
4199 echo "big-endian                ${bigendian-no}"
4200 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4201 if enabled x86; then
4202     echo "${yasmexe}                      ${yasm-no}"
4203     echo "MMX enabled               ${mmx-no}"
4204     echo "MMXEXT enabled            ${mmxext-no}"
4205     echo "3DNow! enabled            ${amd3dnow-no}"
4206     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4207     echo "SSE enabled               ${sse-no}"
4208     echo "SSSE3 enabled             ${ssse3-no}"
4209     echo "AVX enabled               ${avx-no}"
4210     echo "FMA4 enabled              ${fma4-no}"
4211     echo "CMOV enabled              ${cmov-no}"
4212     echo "CMOV is fast              ${fast_cmov-no}"
4213     echo "EBX available             ${ebx_available-no}"
4214     echo "EBP available             ${ebp_available-no}"
4215 fi
4216 if enabled arm; then
4217     echo "ARMv5TE enabled           ${armv5te-no}"
4218     echo "ARMv6 enabled             ${armv6-no}"
4219     echo "ARMv6T2 enabled           ${armv6t2-no}"
4220     echo "VFP enabled               ${vfp-no}"
4221     echo "NEON enabled              ${neon-no}"
4222     echo "THUMB enabled             ${thumb-no}"
4223 fi
4224 if enabled mips; then
4225     echo "MIPS FPU enabled          ${mipsfpu-no}"
4226     echo "MIPS32R2 enabled          ${mips32r2-no}"
4227     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4228     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4229 fi
4230 if enabled ppc; then
4231     echo "AltiVec enabled           ${altivec-no}"
4232     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4233     echo "dcbzl available           ${dcbzl-no}"
4234 fi
4235 if enabled sparc; then
4236     echo "VIS enabled               ${vis-no}"
4237 fi
4238 echo "debug symbols             ${debug-no}"
4239 echo "strip symbols             ${stripping-no}"
4240 echo "optimize for size         ${small-no}"
4241 echo "optimizations             ${optimizations-no}"
4242 echo "static                    ${static-no}"
4243 echo "shared                    ${shared-no}"
4244 echo "postprocessing support    ${postproc-no}"
4245 echo "new filter support        ${avfilter-no}"
4246 echo "network support           ${network-no}"
4247 echo "threading support         ${thread_type-no}"
4248 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4249 echo "SDL support               ${sdl-no}"
4250 echo "libdxva2 enabled          ${dxva2-no}"
4251 echo "libva enabled             ${vaapi-no}"
4252 echo "libvdpau enabled          ${vdpau-no}"
4253 echo "AVISynth enabled          ${avisynth-no}"
4254 echo "frei0r enabled            ${frei0r-no}"
4255 echo "gnutls enabled            ${gnutls-no}"
4256 echo "libaacplus enabled        ${libaacplus-no}"
4257 echo "libass enabled            ${libass-no}"
4258 echo "libcaca enabled           ${libcaca-no}"
4259 echo "libcdio support           ${libcdio-no}"
4260 echo "libcelt enabled           ${libcelt-no}"
4261 echo "libdc1394 support         ${libdc1394-no}"
4262 echo "libfaac enabled           ${libfaac-no}"
4263 echo "libfdk-aac enabled        ${libfdk_aac-no}"
4264 echo "libgsm enabled            ${libgsm-no}"
4265 echo "libiec61883 support       ${libiec61883-no}"
4266 echo "libilbc enabled           ${libilbc-no}"
4267 echo "libmodplug enabled        ${libmodplug-no}"
4268 echo "libmp3lame enabled        ${libmp3lame-no}"
4269 echo "libnut enabled            ${libnut-no}"
4270 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
4271 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
4272 echo "libopencv support         ${libopencv-no}"
4273 echo "libopenjpeg enabled       ${libopenjpeg-no}"
4274 echo "libopus enabled           ${libopus-no}"
4275 echo "libpulse enabled          ${libpulse-no}"
4276 echo "librtmp enabled           ${librtmp-no}"
4277 echo "libschroedinger enabled   ${libschroedinger-no}"
4278 echo "libsoxr enabled           ${libsoxr-no}"
4279 echo "libspeex enabled          ${libspeex-no}"
4280 echo "libstagefright-h264 enabled    ${libstagefright_h264-no}"
4281 echo "libtheora enabled         ${libtheora-no}"
4282 echo "libtwolame enabled        ${libtwolame-no}"
4283 echo "libutvideo enabled        ${libutvideo-no}"
4284 echo "libv4l2 enabled           ${libv4l2-no}"
4285 echo "libvo-aacenc support      ${libvo_aacenc-no}"
4286 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
4287 echo "libvorbis enabled         ${libvorbis-no}"
4288 echo "libvpx enabled            ${libvpx-no}"
4289 echo "libx264 enabled           ${libx264-no}"
4290 echo "libxavs enabled           ${libxavs-no}"
4291 echo "libxvid enabled           ${libxvid-no}"
4292 echo "openal enabled            ${openal-no}"
4293 echo "openssl enabled           ${openssl-no}"
4294 echo "zlib enabled              ${zlib-no}"
4295 echo "bzlib enabled             ${bzlib-no}"
4296 echo "texi2html enabled         ${texi2html-no}"
4297 echo "perl enabled              ${perl-no}"
4298 echo "pod2man enabled           ${pod2man-no}"
4299 echo "makeinfo enabled          ${makeinfo-no}"
4300 test -n "$random_seed" &&
4301     echo "random seed               ${random_seed}"
4302 echo
4303
4304 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4305     echo "Enabled ${type}s:"
4306     eval list=\$$(toupper $type)_LIST
4307     print_enabled '_*' $list | sort | pr -r -3 -t
4308     echo
4309 done
4310
4311 license="LGPL version 2.1 or later"
4312 if enabled nonfree; then
4313     license="nonfree and unredistributable"
4314 elif enabled gplv3; then
4315     license="GPL version 3 or later"
4316 elif enabled lgplv3; then
4317     license="LGPL version 3 or later"
4318 elif enabled gpl; then
4319     license="GPL version 2 or later"
4320 fi
4321
4322 echo "License: $license"
4323
4324 echo "Creating config.mak and config.h..."
4325
4326 test -e Makefile || $ln_s "$source_path/Makefile" .
4327
4328 enabled stripping || strip="echo skipping strip"
4329
4330 config_files="$TMPH config.mak"
4331
4332 cat > config.mak <<EOF
4333 # Automatically generated by configure - do not modify!
4334 ifndef FFMPEG_CONFIG_MAK
4335 FFMPEG_CONFIG_MAK=1
4336 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4337 prefix=$prefix
4338 LIBDIR=\$(DESTDIR)$libdir
4339 SHLIBDIR=\$(DESTDIR)$shlibdir
4340 INCDIR=\$(DESTDIR)$incdir
4341 BINDIR=\$(DESTDIR)$bindir
4342 DATADIR=\$(DESTDIR)$datadir
4343 MANDIR=\$(DESTDIR)$mandir
4344 SRC_PATH=$source_path
4345 ifndef MAIN_MAKEFILE
4346 SRC_PATH:=\$(SRC_PATH:.%=..%)
4347 endif
4348 CC_IDENT=$cc_ident
4349 ARCH=$arch
4350 CC=$cc
4351 CXX=$cxx
4352 AS=$as
4353 LD=$ld
4354 DEPCC=$dep_cc
4355 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4356 DEPAS=$as
4357 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4358 YASM=$yasmexe
4359 DEPYASM=$yasmexe
4360 AR=$ar
4361 ARFLAGS=$arflags
4362 AR_O=$ar_o
4363 RANLIB=$ranlib
4364 CP=cp -p
4365 LN_S=$ln_s
4366 STRIP=$strip
4367 CPPFLAGS=$CPPFLAGS
4368 CFLAGS=$CFLAGS
4369 CXXFLAGS=$CXXFLAGS
4370 ASFLAGS=$ASFLAGS
4371 AS_C=$AS_C
4372 AS_O=$AS_O
4373 CC_C=$CC_C
4374 CC_E=$CC_E
4375 CC_O=$CC_O
4376 CXX_C=$CXX_C
4377 CXX_O=$CXX_O
4378 LD_O=$LD_O
4379 LD_LIB=$LD_LIB
4380 LD_PATH=$LD_PATH
4381 DLLTOOL=$dlltool
4382 LDFLAGS=$LDFLAGS
4383 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4384 SHFLAGS=$SHFLAGS
4385 YASMFLAGS=$YASMFLAGS
4386 BUILDSUF=$build_suffix
4387 PROGSSUF=$progs_suffix
4388 FULLNAME=$FULLNAME
4389 LIBPREF=$LIBPREF
4390 LIBSUF=$LIBSUF
4391 LIBNAME=$LIBNAME
4392 SLIBPREF=$SLIBPREF
4393 SLIBSUF=$SLIBSUF
4394 EXESUF=$EXESUF
4395 EXTRA_VERSION=$extra_version
4396 CCDEP=$CCDEP
4397 CXXDEP=$CXXDEP
4398 CCDEP_FLAGS=$CCDEP_FLAGS
4399 ASDEP=$ASDEP
4400 ASDEP_FLAGS=$ASDEP_FLAGS
4401 CC_DEPFLAGS=$CC_DEPFLAGS
4402 AS_DEPFLAGS=$AS_DEPFLAGS
4403 HOSTCC=$host_cc
4404 HOSTLD=$host_ld
4405 HOSTCFLAGS=$host_cflags
4406 HOSTEXESUF=$HOSTEXESUF
4407 HOSTLDFLAGS=$host_ldflags
4408 HOSTLIBS=$host_libs
4409 DEPHOSTCC=$host_cc
4410 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4411 HOSTCCDEP=$HOSTCCDEP
4412 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4413 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4414 HOSTCC_C=$HOSTCC_C
4415 HOSTCC_O=$HOSTCC_O
4416 HOSTLD_O=$HOSTLD_O
4417 TARGET_EXEC=$target_exec
4418 TARGET_PATH=$target_path
4419 LIBS-ffplay=$sdl_libs
4420 CFLAGS-ffplay=$sdl_cflags
4421 ZLIB=$($ldflags_filter -lz)
4422 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4423 EXTRALIBS=$extralibs
4424 COMPAT_OBJS=$compat_objs
4425 EXEOBJS=$exeobjs
4426 INSTALL=$install
4427 LIBTARGET=${LIBTARGET}
4428 SLIBNAME=${SLIBNAME}
4429 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4430 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4431 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4432 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4433 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4434 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4435 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4436 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4437 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4438 NOREDZONE_FLAGS=$noredzone_flags
4439 EOF
4440
4441 get_version(){
4442     lcname=lib${1}
4443     name=$(toupper $lcname)
4444     file=$source_path/$lcname/version.h
4445     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4446     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4447     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4448     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4449 }
4450
4451 map 'get_version $v' $LIBRARY_LIST
4452
4453 cat > $TMPH <<EOF
4454 /* Automatically generated by configure - do not modify! */
4455 #ifndef FFMPEG_CONFIG_H
4456 #define FFMPEG_CONFIG_H
4457 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4458 #define FFMPEG_LICENSE "$(c_escape $license)"
4459 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4460 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4461 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4462 #define av_restrict $_restrict
4463 #define EXTERN_PREFIX "${extern_prefix}"
4464 #define EXTERN_ASM ${extern_prefix}
4465 #define SLIBSUF "$SLIBSUF"
4466 #define HAVE_MMX2 HAVE_MMXEXT
4467 EOF
4468
4469 test -n "$assert_level" &&
4470     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4471
4472 test -n "$malloc_prefix" &&
4473     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4474
4475 if enabled yasm; then
4476     append config_files $TMPASM
4477     printf '' >$TMPASM
4478 fi
4479
4480 print_config ARCH_   "$config_files" $ARCH_LIST
4481 print_config HAVE_   "$config_files" $HAVE_LIST
4482 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4483                                      $CONFIG_EXTRA      \
4484                                      $ALL_COMPONENTS    \
4485
4486 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4487 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4488
4489 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4490 cp_if_changed $TMPH config.h
4491 touch .config
4492
4493 enabled yasm && cp_if_changed $TMPASM config.asm
4494
4495 cat > $TMPH <<EOF
4496 /* Generated by ffconf */
4497 #ifndef AVUTIL_AVCONFIG_H
4498 #define AVUTIL_AVCONFIG_H
4499 EOF
4500
4501 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4502
4503 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4504
4505 cp_if_changed $TMPH libavutil/avconfig.h
4506
4507 if test -n "$WARNINGS"; then
4508     printf "\n$WARNINGS"
4509     enabled fatal_warnings && exit 1
4510 fi
4511
4512 # build pkg-config files
4513
4514 pkgconfig_generate(){
4515     name=$1
4516     shortname=${name#lib}${build_suffix}
4517     comment=$2
4518     version=$3
4519     libs=$4
4520     requires=$5
4521     enabled ${name#lib} || return 0
4522     mkdir -p $name
4523     cat <<EOF > $name/$name.pc
4524 prefix=$prefix
4525 exec_prefix=\${prefix}
4526 libdir=$libdir
4527 includedir=$incdir
4528
4529 Name: $name
4530 Description: $comment
4531 Version: $version
4532 Requires: $(enabled shared || echo $requires)
4533 Requires.private: $(enabled shared && echo $requires)
4534 Conflicts:
4535 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4536 Libs.private: $(enabled shared && echo $libs)
4537 Cflags: -I\${includedir}
4538 EOF
4539
4540 mkdir -p doc/examples/pc-uninstalled
4541 includedir=${source_path}
4542 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4543     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4544 prefix=
4545 exec_prefix=
4546 libdir=\${pcfiledir}/../../../$name
4547 includedir=${includedir}
4548
4549 Name: $name
4550 Description: $comment
4551 Version: $version
4552 Requires: $requires
4553 Conflicts:
4554 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4555 Cflags: -I\${includedir}
4556 EOF
4557 }
4558
4559 libavfilter_pc_deps="libavutil = $LIBAVUTIL_VERSION"
4560 enabled libavfilter_deps_avcodec    && prepend libavfilter_pc_deps "libavcodec = $LIBAVCODEC_VERSION,"
4561 enabled libavfilter_deps_avformat   && prepend libavfilter_pc_deps "libavformat = $LIBAVFORMAT_VERSION,"
4562 enabled libavfilter_deps_avresample && prepend libavfilter_pc_deps "libavresample = $LIBAVRESAMPLE_VERSION,"
4563 enabled libavfilter_deps_swscale    && prepend libavfilter_pc_deps "libswscale = $LIBSWSCALE_VERSION,"
4564 enabled libavfilter_deps_swresample && prepend libavfilter_pc_deps "libswresample = $LIBSWRESAMPLE_VERSION,"
4565 enabled libavfilter_deps_postproc   && prepend libavfilter_pc_deps "libpostproc = $LIBPOSTPROC_VERSION,"
4566 libavfilter_pc_deps=${libavfilter_pc_deps%, }
4567
4568 libavdevice_pc_deps="libavformat = $LIBAVFORMAT_VERSION"
4569 enabled lavfi_indev && prepend libavdevice_pc_deps "libavfilter = $LIBAVFILTER_VERSION,"
4570
4571 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4572 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4573 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4574 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$libavdevice_pc_deps"
4575 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$libavfilter_pc_deps"
4576 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
4577 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4578 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4579 pkgconfig_generate libswresample "FFmpeg audio resampling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4580
4581 fix_ffmpeg_remote(){
4582     git_remote_from=$1
4583     git_remote_to=$2
4584     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4585     if [ "$fixme_remote" != "" ]; then
4586         echolog "
4587 Outdated domain in git config, the official domain for ffmpeg git is since
4588 November 2011, source.ffmpeg.org, both the old and the new point to the same
4589 repository and server. To update it enter the following commands:
4590 "
4591         for remote in $fixme_remote; do
4592             echolog "git remote set-url $remote $git_remote_to"
4593         done
4594     fi
4595 }
4596
4597 if test -f "$source_path/.git/config"; then
4598     remote_from=git.videolan.org
4599     remote_to=source.ffmpeg.org
4600     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4601     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4602 fi