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   --disable-network        disable network support [no]
 134   --disable-dct            disable DCT code
 135   --disable-dwt            disable DWT code
 136   --disable-lsp            disable LSP code
 137   --disable-lzo            disable LZO decoder code
 138   --disable-mdct           disable MDCT code
 139   --disable-rdft           disable RDFT code
 140   --disable-fft            disable FFT code
 141
 142 Hardware accelerators:
 143   --enable-dxva2           enable DXVA2 code
 144   --enable-vaapi           enable VAAPI code
 145   --enable-vda             enable VDA code
 146   --enable-vdpau           enable VDPAU code
 147
 148 Individual component options:
 149   --disable-everything     disable all components listed below
 150   --disable-encoder=NAME   disable encoder NAME
 151   --enable-encoder=NAME    enable encoder NAME
 152   --disable-encoders       disable all encoders
 153   --disable-decoder=NAME   disable decoder NAME
 154   --enable-decoder=NAME    enable decoder NAME
 155   --disable-decoders       disable all decoders
 156   --disable-hwaccel=NAME   disable hwaccel NAME
 157   --enable-hwaccel=NAME    enable hwaccel NAME
 158   --disable-hwaccels       disable all hwaccels
 159   --disable-muxer=NAME     disable muxer NAME
 160   --enable-muxer=NAME      enable muxer NAME
 161   --disable-muxers         disable all muxers
 162   --disable-demuxer=NAME   disable demuxer NAME
 163   --enable-demuxer=NAME    enable demuxer NAME
 164   --disable-demuxers       disable all demuxers
 165   --enable-parser=NAME     enable parser NAME
 166   --disable-parser=NAME    disable parser NAME
 167   --disable-parsers        disable all parsers
 168   --enable-bsf=NAME        enable bitstream filter NAME
 169   --disable-bsf=NAME       disable bitstream filter NAME
 170   --disable-bsfs           disable all bitstream filters
 171   --enable-protocol=NAME   enable protocol NAME
 172   --disable-protocol=NAME  disable protocol NAME
 173   --disable-protocols      disable all protocols
 174   --enable-indev=NAME      enable input device NAME
 175   --disable-indev=NAME     disable input device NAME
 176   --disable-indevs         disable input devices
 177   --enable-outdev=NAME     enable output device NAME
 178   --disable-outdev=NAME    disable output device NAME
 179   --disable-outdevs        disable output devices
 180   --disable-devices        disable all devices
 181   --enable-filter=NAME     enable filter NAME
 182   --disable-filter=NAME    disable filter NAME
 183   --disable-filters        disable all filters
 184
 185 External library support:
 186   --enable-avisynth        enable reading of AVISynth script files [no]
 187   --enable-bzlib           enable bzlib [autodetect]
 188   --enable-fontconfig      enable fontconfig
 189   --enable-frei0r          enable frei0r video filtering
 190   --enable-gnutls          enable gnutls [no]
 191   --enable-iconv           enable iconv [no]
 192   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 193   --enable-libass          enable libass subtitles rendering [no]
 194   --enable-libbluray       enable BluRay reading using libbluray [no]
 195   --enable-libcaca         enable textual display using libcaca
 196   --enable-libcelt         enable CELT decoding via libcelt [no]
 197   --enable-libcdio         enable audio CD grabbing with libcdio
 198   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 199                            and libraw1394 [no]
 200   --enable-libfaac         enable AAC encoding via libfaac [no]
 201   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 202   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 203   --enable-libfreetype     enable libfreetype [no]
 204   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 205   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 206   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 207   --enable-libmodplug      enable ModPlug via libmodplug [no]
 208   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 209   --enable-libnut          enable NUT (de)muxing via libnut,
 210                            native (de)muxer exists [no]
 211   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 212   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 213   --enable-libopencv       enable video filtering via libopencv [no]
 214   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 215   --enable-libopus         enable Opus decoding via libopus [no]
 216   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 217   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 218   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 219   --enable-libsoxr         enable Include libsoxr resampling [no]
 220   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 221   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 222   --enable-libtheora       enable Theora encoding via libtheora [no]
 223   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 224   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 225   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 226   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 227   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 228   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 229                            native implementation exists [no]
 230   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 231   --enable-libx264         enable H.264 encoding via x264 [no]
 232   --enable-libxavs         enable AVS encoding via xavs [no]
 233   --enable-libxvid         enable Xvid encoding via xvidcore,
 234                            native MPEG-4/Xvid encoder exists [no]
 235   --enable-openal          enable OpenAL 1.1 capture support [no]
 236   --enable-openssl         enable openssl [no]
 237   --enable-x11grab         enable X11 grabbing [no]
 238   --enable-zlib            enable zlib [autodetect]
 239
 240 Advanced options (experts only):
 241   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 242   --enable-cross-compile   assume a cross-compiler is used
 243   --sysroot=PATH           root of cross-build tree
 244   --sysinclude=PATH        location of cross-build system headers
 245   --target-os=OS           compiler targets OS [$target_os]
 246   --target-exec=CMD        command to run executables on target
 247   --target-path=DIR        path to view of build directory on target
 248   --toolchain=NAME         set tool defaults according to NAME
 249   --nm=NM                  use nm tool NM [$nm_default]
 250   --ar=AR                  use archive tool AR [$ar_default]
 251   --as=AS                  use assembler AS [$as_default]
 252   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 253   --cc=CC                  use C compiler CC [$cc_default]
 254   --cxx=CXX                use C compiler CXX [$cxx_default]
 255   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 256   --ld=LD                  use linker LD [$ld_default]
 257   --host-cc=HOSTCC         use host C compiler HOSTCC
 258   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 259   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 260   --host-ld=HOSTLD         use host linker HOSTLD
 261   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 262   --host-libs=HLIBS        use libs HLIBS when linking for host
 263   --host-os=OS             compiler host OS [$target_os]
 264   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 265   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 266   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 267   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 268   --extra-version=STRING   version string suffix []
 269   --optflags=OPTFLAGS      override optimization-related compiler flags
 270   --build-suffix=SUFFIX    library name suffix []
 271   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 272   --progs-suffix=SUFFIX    program name suffix []
 273   --arch=ARCH              select architecture [$arch]
 274   --cpu=CPU                select the minimum required CPU (affects
 275                            instruction selection, may crash on older CPUs)
 276   --enable-pic             build position-independent code
 277   --enable-sram            allow use of on-chip SRAM
 278   --enable-thumb           compile for Thumb instruction set
 279   --disable-symver         disable symbol versioning
 280   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 281   --disable-safe-bitstream-reader
 282                            disable buffer boundary checking in bitreaders
 283                            (faster, but may crash)
 284   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 285   --enable-lto             use link-time optimization
 286
 287 Optimization options (experts only):
 288   --disable-asm            disable all assembler optimizations
 289   --disable-altivec        disable AltiVec optimizations
 290   --disable-amd3dnow       disable 3DNow! optimizations
 291   --disable-amd3dnowext    disable 3DNow! extended optimizations
 292   --disable-mmx            disable MMX optimizations
 293   --disable-mmxext         disable MMXEXT optimizations
 294   --disable-sse            disable SSE optimizations
 295   --disable-sse2           disable SSE2 optimizations
 296   --disable-sse3           disable SSE3 optimizations
 297   --disable-ssse3          disable SSSE3 optimizations
 298   --disable-sse4           disable SSE4 optimizations
 299   --disable-sse42          disable SSE4.2 optimizations
 300   --disable-avx            disable AVX optimizations
 301   --disable-fma4           disable FMA4 optimizations
 302   --disable-armv5te        disable armv5te optimizations
 303   --disable-armv6          disable armv6 optimizations
 304   --disable-armv6t2        disable armv6t2 optimizations
 305   --disable-vfp            disable VFP optimizations
 306   --disable-neon           disable NEON optimizations
 307   --disable-vis            disable VIS optimizations
 308   --disable-inline-asm     disable use of inline assembler
 309   --disable-yasm           disable use of yasm assembler
 310   --disable-mips32r2       disable MIPS32R2 optimizations
 311   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 312   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 313   --disable-mipsfpu        disable floating point MIPS optimizations
 314   --disable-fast-unaligned consider unaligned accesses slow
 315
 316 Developer options (useful when working on FFmpeg itself):
 317   --enable-coverage        build with test coverage instrumentation
 318   --disable-debug          disable debugging symbols
 319   --enable-debug=LEVEL     set the debug level [$debuglevel]
 320   --disable-optimizations  disable compiler optimizations
 321   --enable-extra-warnings  enable more compiler warnings
 322   --disable-stripping      disable stripping of executables and shared libraries
 323   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 324                            2 causes a slowdown at runtime.
 325   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 326   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 327                            leaks and errors, using the specified valgrind binary.
 328                            Cannot be combined with --target-exec
 329   --enable-ftrapv          Trap arithmetic overflows
 330   --samples=PATH           location of test samples for FATE, if not set use
 331                            \$FATE_SAMPLES at make invocation time.
 332   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 333                            should be used only for debugging purposes)
 334   --enable-random          randomly enable/disable components
 335   --disable-random
 336   --enable-random=LIST     randomly enable/disable specific components or
 337   --disable-random=LIST    component groups. LIST is a comma-separated list
 338                            of NAME[:PROB] entries where NAME is a component
 339                            (group) and PROB the probability associated with
 340                            NAME (default 0.5).
 341   --random-seed=VALUE      seed value for --enable/disable-random
 342
 343 NOTE: Object files are built at the place where configure is launched.
 344 EOF
 345   exit 0
 346 }
 347
 348 quotes='""'
 349
 350 log(){
 351     echo "$@" >> $logfile
 352 }
 353
 354 log_file(){
 355     log BEGIN $1
 356     pr -n -t $1 >> $logfile
 357     log END $1
 358 }
 359
 360 echolog(){
 361     log "$@"
 362     echo "$@"
 363 }
 364
 365 warn(){
 366     log "WARNING: $*"
 367     WARNINGS="${WARNINGS}WARNING: $*\n"
 368 }
 369
 370 die(){
 371     echolog "$@"
 372     cat <<EOF
 373
 374 If you think configure made a mistake, make sure you are using the latest
 375 version from Git.  If the latest version fails, report the problem to the
 376 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 377 EOF
 378     if disabled logging; then
 379         cat <<EOF
 380 Rerun configure with logging enabled (do not use --disable-logging), and
 381 include the log this produces with your report.
 382 EOF
 383     else
 384         cat <<EOF
 385 Include the log file "$logfile" produced by configure as this will help
 386 solving the problem.
 387 EOF
 388     fi
 389     exit 1
 390 }
 391
 392 # Avoid locale weirdness, besides we really just want to translate ASCII.
 393 toupper(){
 394     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 395 }
 396
 397 tolower(){
 398     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 399 }
 400
 401 c_escape(){
 402     echo "$*" | sed 's/["\\]/\\\0/g'
 403 }
 404
 405 sh_quote(){
 406     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 407     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 408     echo "$v"
 409 }
 410
 411 cleanws(){
 412     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 413 }
 414
 415 filter(){
 416     pat=$1
 417     shift
 418     for v; do
 419         eval "case $v in $pat) echo $v ;; esac"
 420     done
 421 }
 422
 423 filter_out(){
 424     pat=$1
 425     shift
 426     for v; do
 427         eval "case $v in $pat) ;; *) echo $v ;; esac"
 428     done
 429 }
 430
 431 map(){
 432     m=$1
 433     shift
 434     for v; do eval $m; done
 435 }
 436
 437 add_suffix(){
 438     suffix=$1
 439     shift
 440     for v; do echo ${v}${suffix}; done
 441 }
 442
 443 set_all(){
 444     value=$1
 445     shift
 446     for var in $*; do
 447         eval $var=$value
 448     done
 449 }
 450
 451 set_weak(){
 452     value=$1
 453     shift
 454     for var; do
 455         eval : \${$var:=$value}
 456     done
 457 }
 458
 459 sanitize_var_name(){
 460     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 461 }
 462
 463 set_safe(){
 464     var=$1
 465     shift
 466     eval $(sanitize_var_name "$var")='$*'
 467 }
 468
 469 get_safe(){
 470     eval echo \$$(sanitize_var_name "$1")
 471 }
 472
 473 pushvar(){
 474     for var in $*; do
 475         eval level=\${${var}_level:=0}
 476         eval ${var}_${level}="\$$var"
 477         eval ${var}_level=$(($level+1))
 478     done
 479 }
 480
 481 popvar(){
 482     for var in $*; do
 483         eval level=\${${var}_level:-0}
 484         test $level = 0 && continue
 485         eval level=$(($level-1))
 486         eval $var="\${${var}_${level}}"
 487         eval ${var}_level=$level
 488         eval unset ${var}_${level}
 489     done
 490 }
 491
 492 enable(){
 493     set_all yes $*
 494 }
 495
 496 disable(){
 497     set_all no $*
 498 }
 499
 500 enable_weak(){
 501     set_weak yes $*
 502 }
 503
 504 disable_weak(){
 505     set_weak no $*
 506 }
 507
 508 enable_safe(){
 509     for var; do
 510         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 511     done
 512 }
 513
 514 disable_safe(){
 515     for var; do
 516         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 517     done
 518 }
 519
 520 do_enable_deep(){
 521     for var; do
 522         enabled $var && continue
 523         eval sel="\$${var}_select"
 524         eval sgs="\$${var}_suggest"
 525         pushvar var sgs
 526         enable_deep $sel
 527         popvar sgs
 528         enable_deep_weak $sgs
 529         popvar var
 530     done
 531 }
 532
 533 enable_deep(){
 534     do_enable_deep $*
 535     enable $*
 536 }
 537
 538 enable_deep_weak(){
 539     do_enable_deep $*
 540     enable_weak $*
 541 }
 542
 543 enabled(){
 544     test "${1#!}" = "$1" && op== || op=!=
 545     eval test "x\$${1#!}" $op "xyes"
 546 }
 547
 548 disabled(){
 549     test "${1#!}" = "$1" && op== || op=!=
 550     eval test "x\$${1#!}" $op "xno"
 551 }
 552
 553 enabled_all(){
 554     for opt; do
 555         enabled $opt || return 1
 556     done
 557 }
 558
 559 disabled_all(){
 560     for opt; do
 561         disabled $opt || return 1
 562     done
 563 }
 564
 565 enabled_any(){
 566     for opt; do
 567         enabled $opt && return 0
 568     done
 569 }
 570
 571 disabled_any(){
 572     for opt; do
 573         disabled $opt && return 0
 574     done
 575     return 1
 576 }
 577
 578 set_default(){
 579     for opt; do
 580         eval : \${$opt:=\$${opt}_default}
 581     done
 582 }
 583
 584 is_in(){
 585     value=$1
 586     shift
 587     for var in $*; do
 588         [ $var = $value ] && return 0
 589     done
 590     return 1
 591 }
 592
 593 do_check_deps(){
 594     for cfg; do
 595         cfg="${cfg#!}"
 596         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 597         disabled ${cfg}_checking && continue
 598         enable ${cfg}_checking
 599         append allopts $cfg
 600
 601         eval dep_all="\$${cfg}_deps"
 602         eval dep_any="\$${cfg}_deps_any"
 603         eval dep_sel="\$${cfg}_select"
 604         eval dep_sgs="\$${cfg}_suggest"
 605         eval dep_ifa="\$${cfg}_if"
 606         eval dep_ifn="\$${cfg}_if_any"
 607
 608         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 609         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 610         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 611
 612         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 613         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 614         enabled_all  $dep_all || disable $cfg
 615         enabled_any  $dep_any || disable $cfg
 616         disabled_any $dep_sel && disable $cfg
 617
 618         if enabled $cfg; then
 619             enable_deep $dep_sel
 620             enable_deep_weak $dep_sgs
 621         fi
 622
 623         disable ${cfg}_checking
 624     done
 625 }
 626
 627 check_deps(){
 628     unset allopts
 629
 630     do_check_deps "$@"
 631
 632     for cfg in $allopts; do
 633         enabled $cfg || continue
 634         eval dep_extralibs="\$${cfg}_extralibs"
 635         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 636     done
 637 }
 638
 639 print_config(){
 640     pfx=$1
 641     files=$2
 642     shift 2
 643     map 'eval echo "$v \${$v:-no}"' "$@" |
 644     awk "BEGIN { split(\"$files\", files) }
 645         {
 646             c = \"$pfx\" toupper(\$1);
 647             v = \$2;
 648             sub(/yes/, 1, v);
 649             sub(/no/,  0, v);
 650             for (f in files) {
 651                 file = files[f];
 652                 if (file ~ /\\.h\$/) {
 653                     printf(\"#define %s %d\\n\", c, v) >>file;
 654                 } else if (file ~ /\\.asm\$/) {
 655                     printf(\"%%define %s %d\\n\", c, v) >>file;
 656                 } else if (file ~ /\\.mak\$/) {
 657                     n = -v ? \"\" : \"!\";
 658                     printf(\"%s%s=yes\\n\", n, c) >>file;
 659                 }
 660             }
 661         }"
 662 }
 663
 664 print_enabled(){
 665     suf=$1
 666     shift
 667     for v; do
 668         enabled $v && printf "%s\n" ${v%$suf};
 669     done
 670 }
 671
 672 append(){
 673     var=$1
 674     shift
 675     eval "$var=\"\$$var $*\""
 676 }
 677
 678 prepend(){
 679     var=$1
 680     shift
 681     eval "$var=\"$* \$$var\""
 682 }
 683
 684 add_cppflags(){
 685     append CPPFLAGS "$@"
 686 }
 687
 688 add_cflags(){
 689     append CFLAGS $($cflags_filter "$@")
 690 }
 691
 692 add_cxxflags(){
 693     append CXXFLAGS $($cflags_filter "$@")
 694 }
 695
 696 add_asflags(){
 697     append ASFLAGS $($asflags_filter "$@")
 698 }
 699
 700 add_ldflags(){
 701     append LDFLAGS $($ldflags_filter "$@")
 702 }
 703
 704 add_extralibs(){
 705     prepend extralibs $($ldflags_filter "$@")
 706 }
 707
 708 add_host_cppflags(){
 709     append host_cppflags "$@"
 710 }
 711
 712 add_host_cflags(){
 713     append host_cflags $($host_cflags_filter "$@")
 714 }
 715
 716 add_host_ldflags(){
 717     append host_ldflags $($host_ldflags_filter "$@")
 718 }
 719
 720 add_compat(){
 721     append compat_objs $1
 722     shift
 723     map 'add_cppflags -D$v' "$@"
 724 }
 725
 726 check_cmd(){
 727     log "$@"
 728     "$@" >> $logfile 2>&1
 729 }
 730
 731 cc_o(){
 732     eval printf '%s\\n' $CC_O
 733 }
 734
 735 cc_e(){
 736     eval printf '%s\\n' $CC_E
 737 }
 738
 739 check_cc(){
 740     log check_cc "$@"
 741     cat > $TMPC
 742     log_file $TMPC
 743     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 744 }
 745
 746 check_cxx(){
 747     log check_cxx "$@"
 748     cat > $TMPCPP
 749     log_file $TMPCPP
 750     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 751 }
 752
 753 check_cpp(){
 754     log check_cpp "$@"
 755     cat > $TMPC
 756     log_file $TMPC
 757     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 758 }
 759
 760 as_o(){
 761     eval printf '%s\\n' $AS_O
 762 }
 763
 764 check_as(){
 765     log check_as "$@"
 766     cat > $TMPS
 767     log_file $TMPS
 768     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 769 }
 770
 771 check_inline_asm(){
 772     log check_inline_asm "$@"
 773     name="$1"
 774     code="$2"
 775     shift 2
 776     disable $name
 777     check_cc "$@" <<EOF && enable $name
 778 void foo(void){ __asm__ volatile($code); }
 779 EOF
 780 }
 781
 782 check_insn(){
 783     log check_insn "$@"
 784     check_inline_asm ${1}_inline "\"$2\""
 785     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 786 }
 787
 788 check_yasm(){
 789     log check_yasm "$@"
 790     echo "$1" > $TMPS
 791     log_file $TMPS
 792     shift 1
 793     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 794 }
 795
 796 ld_o(){
 797     eval printf '%s\\n' $LD_O
 798 }
 799
 800 check_ld(){
 801     log check_ld "$@"
 802     type=$1
 803     shift 1
 804     flags=$(filter_out '-l*|*.so' $@)
 805     libs=$(filter '-l*|*.so' $@)
 806     check_$type $($cflags_filter $flags) || return
 807     flags=$($ldflags_filter $flags)
 808     libs=$($ldflags_filter $libs)
 809     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 810 }
 811
 812 check_code(){
 813     log check_code "$@"
 814     check=$1
 815     headers=$2
 816     code=$3
 817     shift 3
 818     {
 819         for hdr in $headers; do
 820             echo "#include <$hdr>"
 821         done
 822         echo "int main(void) { $code; return 0; }"
 823     } | check_$check "$@"
 824 }
 825
 826 check_cppflags(){
 827     log check_cppflags "$@"
 828     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 829 int x;
 830 EOF
 831 }
 832
 833 check_cflags(){
 834     log check_cflags "$@"
 835     set -- $($cflags_filter "$@")
 836     check_cc "$@" <<EOF && append CFLAGS "$@"
 837 int x;
 838 EOF
 839 }
 840
 841 check_cxxflags(){
 842     log check_cxxflags "$@"
 843     set -- $($cflags_filter "$@")
 844     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 845 int x;
 846 EOF
 847 }
 848
 849 test_ldflags(){
 850     log test_ldflags "$@"
 851     check_ld "cc" "$@" <<EOF
 852 int main(void){ return 0; }
 853 EOF
 854 }
 855
 856 check_ldflags(){
 857     log check_ldflags "$@"
 858     test_ldflags "$@" && add_ldflags "$@"
 859 }
 860
 861 check_header(){
 862     log check_header "$@"
 863     header=$1
 864     shift
 865     disable_safe $header
 866     check_cpp "$@" <<EOF && enable_safe $header
 867 #include <$header>
 868 int x;
 869 EOF
 870 }
 871
 872 check_func(){
 873     log check_func "$@"
 874     func=$1
 875     shift
 876     disable $func
 877     check_ld "cc" "$@" <<EOF && enable $func
 878 extern int $func();
 879 int main(void){ $func(); }
 880 EOF
 881 }
 882
 883 check_mathfunc(){
 884     log check_mathfunc "$@"
 885     func=$1
 886     narg=$2
 887     shift 2
 888     test $narg = 2 && args="f, g" || args="f"
 889     disable $func
 890     check_ld "cc" "$@" <<EOF && enable $func
 891 #include <math.h>
 892 float foo(float f, float g) { return $func($args); }
 893 int main(void){ return (int) foo; }
 894 EOF
 895 }
 896
 897 check_func_headers(){
 898     log check_func_headers "$@"
 899     headers=$1
 900     funcs=$2
 901     shift 2
 902     {
 903         for hdr in $headers; do
 904             echo "#include <$hdr>"
 905         done
 906         for func in $funcs; do
 907             echo "long check_$func(void) { return (long) $func; }"
 908         done
 909         echo "int main(void) { return 0; }"
 910     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 911 }
 912
 913 check_class_headers_cpp(){
 914     log check_class_headers_cpp "$@"
 915     headers=$1
 916     classes=$2
 917     shift 2
 918     {
 919         for hdr in $headers; do
 920             echo "#include <$hdr>"
 921         done
 922         echo "int main(void) { "
 923         i=1
 924         for class in $classes; do
 925             echo "$class obj$i;"
 926             i=$(expr $i + 1)
 927         done
 928         echo "return 0; }"
 929     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 930 }
 931
 932 check_cpp_condition(){
 933     log check_cpp_condition "$@"
 934     header=$1
 935     condition=$2
 936     shift 2
 937     check_cpp "$@" <<EOF
 938 #include <$header>
 939 #if !($condition)
 940 #error "unsatisfied condition: $condition"
 941 #endif
 942 EOF
 943 }
 944
 945 check_lib(){
 946     log check_lib "$@"
 947     header="$1"
 948     func="$2"
 949     shift 2
 950     check_header $header && check_func $func "$@" && add_extralibs "$@"
 951 }
 952
 953 check_lib2(){
 954     log check_lib2 "$@"
 955     headers="$1"
 956     funcs="$2"
 957     shift 2
 958     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 959 }
 960
 961 check_lib_cpp(){
 962     log check_lib_cpp "$@"
 963     headers="$1"
 964     classes="$2"
 965     shift 2
 966     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 967 }
 968
 969 check_pkg_config(){
 970     log check_pkg_config "$@"
 971     pkg="$1"
 972     headers="$2"
 973     funcs="$3"
 974     shift 3
 975     $pkg_config --exists $pkg 2>/dev/null || return
 976     pkg_cflags=$($pkg_config --cflags $pkg)
 977     pkg_libs=$($pkg_config --libs $pkg)
 978     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 979         set_safe ${pkg}_cflags $pkg_cflags   &&
 980         set_safe ${pkg}_libs   $pkg_libs
 981 }
 982
 983 check_exec(){
 984     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 985 }
 986
 987 check_exec_crash(){
 988     code=$(cat)
 989
 990     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 991     # are safe but may not be available everywhere.  Thus we use
 992     # raise(SIGTERM) instead.  The check is run in a subshell so we
 993     # can redirect the "Terminated" message from the shell.  SIGBUS
 994     # is not defined by standard C so it is used conditionally.
 995
 996     (check_exec "$@") >> $logfile 2>&1 <<EOF
 997 #include <signal.h>
 998 static void sighandler(int sig){
 999     raise(SIGTERM);
1000 }
1001 int func(void){
1002     $code
1003 }
1004 int (*func_ptr)(void) = func;
1005 int main(void){
1006     signal(SIGILL, sighandler);
1007     signal(SIGFPE, sighandler);
1008     signal(SIGSEGV, sighandler);
1009 #ifdef SIGBUS
1010     signal(SIGBUS, sighandler);
1011 #endif
1012     return func_ptr();
1013 }
1014 EOF
1015 }
1016
1017 check_type(){
1018     log check_type "$@"
1019     headers=$1
1020     type=$2
1021     shift 2
1022     disable_safe "$type"
1023     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1024 }
1025
1026 check_struct(){
1027     log check_struct "$@"
1028     headers=$1
1029     struct=$2
1030     member=$3
1031     shift 3
1032     disable_safe "${struct}_${member}"
1033     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1034         enable_safe "${struct}_${member}"
1035 }
1036
1037 check_builtin(){
1038     log check_builtin "$@"
1039     name=$1
1040     headers=$2
1041     builtin=$3
1042     shift 3
1043     disable "$name"
1044     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1045 }
1046
1047 require(){
1048     name="$1"
1049     header="$2"
1050     func="$3"
1051     shift 3
1052     check_lib $header $func "$@" || die "ERROR: $name not found"
1053 }
1054
1055 require2(){
1056     name="$1"
1057     headers="$2"
1058     func="$3"
1059     shift 3
1060     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1061 }
1062
1063 require_cpp(){
1064     name="$1"
1065     headers="$2"
1066     classes="$3"
1067     shift 3
1068     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1069 }
1070
1071 require_pkg_config(){
1072     pkg="$1"
1073     check_pkg_config "$@" || die "ERROR: $pkg not found"
1074     add_cflags    $(get_safe ${pkg}_cflags)
1075     add_extralibs $(get_safe ${pkg}_libs)
1076 }
1077
1078 hostcc_o(){
1079     eval printf '%s\\n' $HOSTCC_O
1080 }
1081
1082 check_host_cc(){
1083     log check_host_cc "$@"
1084     cat > $TMPC
1085     log_file $TMPC
1086     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1087 }
1088
1089 check_host_cppflags(){
1090     log check_host_cppflags "$@"
1091     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1092 int x;
1093 EOF
1094 }
1095
1096 check_host_cflags(){
1097     log check_host_cflags "$@"
1098     set -- $($host_cflags_filter "$@")
1099     check_host_cc "$@" <<EOF && append host_cflags "$@"
1100 int x;
1101 EOF
1102 }
1103
1104 apply(){
1105     file=$1
1106     shift
1107     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1108 }
1109
1110 cp_if_changed(){
1111     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1112     mkdir -p "$(dirname $2)"
1113     $cp_f "$1" "$2"
1114 }
1115
1116 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1117 # system-dependent things.
1118
1119 COMPONENT_LIST="
1120     bsfs
1121     decoders
1122     demuxers
1123     encoders
1124     filters
1125     hwaccels
1126     indevs
1127     muxers
1128     outdevs
1129     parsers
1130     protocols
1131 "
1132
1133 EXTERNAL_LIBRARY_LIST="
1134     avisynth
1135     bzlib
1136     crystalhd
1137     fontconfig
1138     frei0r
1139     gnutls
1140     iconv
1141     libaacplus
1142     libass
1143     libbluray
1144     libcaca
1145     libcdio
1146     libcelt
1147     libdc1394
1148     libfaac
1149     libfdk_aac
1150     libflite
1151     libfreetype
1152     libgsm
1153     libiec61883
1154     libilbc
1155     libmodplug
1156     libmp3lame
1157     libnut
1158     libopencore_amrnb
1159     libopencore_amrwb
1160     libopencv
1161     libopenjpeg
1162     libopus
1163     libpulse
1164     librtmp
1165     libschroedinger
1166     libsoxr
1167     libspeex
1168     libstagefright_h264
1169     libtheora
1170     libtwolame
1171     libutvideo
1172     libv4l2
1173     libvo_aacenc
1174     libvo_amrwbenc
1175     libvorbis
1176     libvpx
1177     libx264
1178     libxavs
1179     libxvid
1180     openal
1181     openssl
1182     x11grab
1183     zlib
1184 "
1185
1186 DOCUMENT_LIST="
1187     doc
1188     htmlpages
1189     manpages
1190     podpages
1191     txtpages
1192 "
1193
1194 HWACCEL_LIST="
1195     dxva2
1196     vaapi
1197     vda
1198     vdpau
1199 "
1200
1201 LIBRARY_LIST="
1202     avcodec
1203     avdevice
1204     avfilter
1205     avformat
1206     avresample
1207     avutil
1208     postproc
1209     swresample
1210     swscale
1211 "
1212
1213 PROGRAM_LIST="
1214     ffplay
1215     ffprobe
1216     ffserver
1217     ffmpeg
1218 "
1219
1220 CONFIG_LIST="
1221     $COMPONENT_LIST
1222     $DOCUMENT_LIST
1223     $EXTERNAL_LIBRARY_LIST
1224     $HWACCEL_LIST
1225     $LIBRARY_LIST
1226     $PROGRAM_LIST
1227     dct
1228     dwt
1229     fast_unaligned
1230     fft
1231     ftrapv
1232     gpl
1233     gray
1234     hardcoded_tables
1235     incompatible_fork_abi
1236     lsp
1237     lzo
1238     mdct
1239     memalign_hack
1240     memory_poisoning
1241     network
1242     nonfree
1243     pic
1244     rdft
1245     runtime_cpudetect
1246     safe_bitstream_reader
1247     shared
1248     small
1249     sram
1250     static
1251     swscale_alpha
1252     thumb
1253     version3
1254     xmm_clobber_test
1255 "
1256
1257 THREADS_LIST='
1258     pthreads
1259     w32threads
1260     os2threads
1261 '
1262
1263 ARCH_LIST='
1264     aarch64
1265     alpha
1266     arm
1267     avr32
1268     avr32_ap
1269     avr32_uc
1270     bfin
1271     ia64
1272     m68k
1273     mips
1274     mips64
1275     parisc
1276     ppc
1277     ppc64
1278     s390
1279     sh4
1280     sparc
1281     sparc64
1282     tilegx
1283     tilepro
1284     tomi
1285     x86
1286     x86_32
1287     x86_64
1288 '
1289
1290 ARCH_EXT_LIST_ARM='
1291     armv5te
1292     armv6
1293     armv6t2
1294     neon
1295     vfp
1296     vfpv3
1297 '
1298
1299 ARCH_EXT_LIST_X86='
1300     amd3dnow
1301     amd3dnowext
1302     avx
1303     fma4
1304     mmx
1305     mmxext
1306     sse
1307     sse2
1308     sse3
1309     sse4
1310     sse42
1311     ssse3
1312 '
1313
1314 ARCH_EXT_LIST="
1315     $ARCH_EXT_LIST_ARM
1316     $ARCH_EXT_LIST_X86
1317     altivec
1318     ppc4xx
1319     vis
1320     mipsfpu
1321     mips32r2
1322     mipsdspr1
1323     mipsdspr2
1324 "
1325
1326 HAVE_LIST_CMDLINE='
1327     inline_asm
1328     symver
1329     yasm
1330 '
1331
1332 HAVE_LIST_PUB='
1333     bigendian
1334     fast_unaligned
1335     incompatible_fork_abi
1336 '
1337
1338 MATH_FUNCS="
1339     atanf
1340     atan2f
1341     cbrt
1342     cbrtf
1343     cosf
1344     exp2
1345     exp2f
1346     expf
1347     isinf
1348     isnan
1349     ldexpf
1350     llrint
1351     llrintf
1352     log2
1353     log2f
1354     log10f
1355     lrint
1356     lrintf
1357     powf
1358     rint
1359     round
1360     roundf
1361     sinf
1362     trunc
1363     truncf
1364 "
1365
1366 HAVE_LIST="
1367     $ARCH_EXT_LIST
1368     $(add_suffix _external $ARCH_EXT_LIST)
1369     $(add_suffix _inline   $ARCH_EXT_LIST)
1370     $HAVE_LIST_CMDLINE
1371     $HAVE_LIST_PUB
1372     $THREADS_LIST
1373     $MATH_FUNCS
1374     access
1375     aligned_malloc
1376     aligned_stack
1377     alsa_asoundlib_h
1378     altivec_h
1379     arpa_inet_h
1380     asm_mod_q
1381     asm_mod_y
1382     asm_types_h
1383     attribute_may_alias
1384     attribute_packed
1385     cdio_paranoia_h
1386     cdio_paranoia_paranoia_h
1387     clock_gettime
1388     closesocket
1389     cmov
1390     CommandLineToArgvW
1391     cpunop
1392     CryptGenRandom
1393     dcbzl
1394     dev_bktr_ioctl_bt848_h
1395     dev_bktr_ioctl_meteor_h
1396     dev_ic_bt8xx_h
1397     dev_video_bktr_ioctl_bt848_h
1398     dev_video_meteor_ioctl_meteor_h
1399     direct_h
1400     dlfcn_h
1401     dlopen
1402     dos_paths
1403     dxva_h
1404     ebp_available
1405     ebx_available
1406     fast_64bit
1407     fast_clz
1408     fast_cmov
1409     fcntl
1410     fork
1411     getaddrinfo
1412     gethrtime
1413     getopt
1414     GetProcessAffinityMask
1415     GetProcessMemoryInfo
1416     GetProcessTimes
1417     GetSystemTimeAsFileTime
1418     getrusage
1419     getservbyport
1420     gettimeofday
1421     glob
1422     gnu_as
1423     gsm_h
1424     ibm_asm
1425     inet_aton
1426     io_h
1427     isatty
1428     jack_port_get_latency_range
1429     kbhit
1430     ldbrx
1431     libdc1394_1
1432     libdc1394_2
1433     local_aligned_16
1434     local_aligned_8
1435     localtime_r
1436     loongson
1437     lzo1x_999_compress
1438     machine_ioctl_bt848_h
1439     machine_ioctl_meteor_h
1440     makeinfo
1441     malloc_h
1442     MapViewOfFile
1443     memalign
1444     mkstemp
1445     mm_empty
1446     mmap
1447     mprotect
1448     msvcrt
1449     nanosleep
1450     openjpeg_1_5_openjpeg_h
1451     PeekNamedPipe
1452     perl
1453     pod2man
1454     poll_h
1455     posix_memalign
1456     pthread_cancel
1457     rdtsc
1458     rsync_contimeout
1459     sched_getaffinity
1460     sdl
1461     sdl_video_size
1462     SetConsoleTextAttribute
1463     setmode
1464     setrlimit
1465     Sleep
1466     sndio_h
1467     socklen_t
1468     soundcard_h
1469     strerror_r
1470     struct_addrinfo
1471     struct_group_source_req
1472     struct_ip_mreq_source
1473     struct_ipv6_mreq
1474     struct_pollfd
1475     struct_rusage_ru_maxrss
1476     struct_sctp_event_subscribe
1477     struct_sockaddr_in6
1478     struct_sockaddr_sa_len
1479     struct_sockaddr_storage
1480     struct_v4l2_frmivalenum_discrete
1481     symver_asm_label
1482     symver_gnu_asm
1483     sysconf
1484     sysctl
1485     sys_mman_h
1486     sys_param_h
1487     sys_resource_h
1488     sys_select_h
1489     sys_soundcard_h
1490     sys_time_h
1491     sys_videoio_h
1492     termios_h
1493     texi2html
1494     threads
1495     unistd_h
1496     usleep
1497     vfp_args
1498     VirtualAlloc
1499     windows_h
1500     winsock2_h
1501     xform_asm
1502     xmm_clobbers
1503 "
1504
1505 # options emitted with CONFIG_ prefix but not available on the command line
1506 CONFIG_EXTRA="
1507     aandcttables
1508     ac3dsp
1509     audio_frame_queue
1510     error_resilience
1511     gcrypt
1512     golomb
1513     gplv3
1514     h264chroma
1515     h264dsp
1516     h264pred
1517     h264qpel
1518     huffman
1519     lgplv3
1520     lpc
1521     mpegaudio
1522     mpegaudiodsp
1523     mpegvideo
1524     mpegvideoenc
1525     nettle
1526     rangecoder
1527     rtpdec
1528     rtpenc_chain
1529     sinewin
1530     videodsp
1531     vp3dsp
1532 "
1533
1534 CMDLINE_SELECT="
1535     $ARCH_EXT_LIST
1536     $CONFIG_LIST
1537     $HAVE_LIST_CMDLINE
1538     $THREADS_LIST
1539     asm
1540     coverage
1541     cross_compile
1542     debug
1543     extra_warnings
1544     logging
1545     lto
1546     optimizations
1547     stripping
1548 "
1549
1550 PATHS_LIST='
1551     bindir
1552     datadir
1553     incdir
1554     libdir
1555     mandir
1556     prefix
1557     shlibdir
1558 '
1559
1560 CMDLINE_SET="
1561     $PATHS_LIST
1562     ar
1563     arch
1564     as
1565     assert_level
1566     build_suffix
1567     cc
1568     cpu
1569     cross_prefix
1570     cxx
1571     dep_cc
1572     extra_version
1573     host_cc
1574     host_cflags
1575     host_ld
1576     host_ldflags
1577     host_libs
1578     host_os
1579     install
1580     ld
1581     logfile
1582     malloc_prefix
1583     nm
1584     optflags
1585     pkg_config
1586     progs_suffix
1587     random_seed
1588     samples
1589     strip
1590     sysinclude
1591     sysroot
1592     target_exec
1593     target_os
1594     target_path
1595     toolchain
1596     valgrind
1597     yasmexe
1598 "
1599
1600 CMDLINE_APPEND="
1601     extra_cflags
1602     extra_cxxflags
1603     host_cppflags
1604 "
1605
1606 # code dependency declarations
1607
1608 # architecture extensions
1609
1610 armv5te_deps="arm"
1611 armv6_deps="arm"
1612 armv6t2_deps="arm"
1613 neon_deps="arm"
1614 vfp_deps="arm"
1615 vfpv3_deps="vfp"
1616
1617 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1618
1619 mipsfpu_deps="mips"
1620 mips32r2_deps="mips"
1621 mipsdspr1_deps="mips"
1622 mipsdspr2_deps="mips"
1623
1624 altivec_deps="ppc"
1625 ppc4xx_deps="ppc"
1626
1627 vis_deps="sparc"
1628
1629 x86_64_suggest="cmov fast_cmov"
1630
1631 amd3dnow_deps="mmx"
1632 amd3dnowext_deps="amd3dnow"
1633 mmx_deps="x86"
1634 mmxext_deps="mmx"
1635 sse_deps="mmxext"
1636 sse2_deps="sse"
1637 sse3_deps="sse2"
1638 ssse3_deps="sse3"
1639 sse4_deps="ssse3"
1640 sse42_deps="sse4"
1641 avx_deps="sse42"
1642 fma4_deps="avx"
1643
1644 mmx_external_deps="yasm"
1645 mmx_inline_deps="inline_asm"
1646 mmx_suggest="mmx_external mmx_inline"
1647
1648 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1649     eval dep=\$${ext}_deps
1650     eval ${ext}_external_deps='"${dep}_external"'
1651     eval ${ext}_inline_deps='"${dep}_inline"'
1652     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1653 done
1654
1655 aligned_stack_if_any="ppc x86"
1656 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1657 fast_clz_if_any="alpha avr32 mips ppc x86"
1658 fast_unaligned_if_any="ppc x86"
1659
1660 inline_asm_deps="!tms470"
1661 need_memalign="altivec neon sse"
1662
1663 symver_if_any="symver_asm_label symver_gnu_asm"
1664
1665 log2_deps="!msvcrt"
1666
1667 # subsystems
1668 dct_select="rdft"
1669 mdct_select="fft"
1670 rdft_select="fft"
1671 mpegaudio_select="mpegaudiodsp"
1672 mpegaudiodsp_select="dct"
1673 mpegvideo_select="error_resilience videodsp h264chroma"
1674 mpegvideoenc_select="mpegvideo"
1675
1676 # decoders / encoders
1677 aac_decoder_select="mdct sinewin"
1678 aac_encoder_select="audio_frame_queue mdct sinewin"
1679 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1680 ac3_decoder_select="mdct ac3dsp ac3_parser"
1681 ac3_encoder_select="mdct ac3dsp"
1682 ac3_fixed_encoder_select="mdct ac3dsp"
1683 alac_encoder_select="lpc"
1684 amrnb_decoder_select="lsp"
1685 amrwb_decoder_select="lsp"
1686 amv_encoder_select="aandcttables"
1687 atrac1_decoder_select="mdct sinewin"
1688 atrac3_decoder_select="mdct"
1689 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1690 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1691 cavs_decoder_select="golomb h264chroma mpegvideo"
1692 comfortnoise_encoder_select="lpc"
1693 cook_decoder_select="mdct sinewin"
1694 cscd_decoder_select="lzo"
1695 cscd_decoder_suggest="zlib"
1696 dca_decoder_select="mdct"
1697 dirac_decoder_select="dwt golomb videodsp"
1698 dnxhd_encoder_select="aandcttables mpegvideoenc"
1699 dxa_decoder_select="zlib"
1700 eac3_decoder_select="ac3_decoder"
1701 eac3_encoder_select="ac3_encoder"
1702 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1703 eatgq_decoder_select="aandcttables"
1704 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1705 exr_decoder_select="zlib"
1706 ffv1_decoder_select="golomb rangecoder"
1707 ffv1_encoder_select="rangecoder"
1708 ffvhuff_encoder_select="huffman"
1709 flac_decoder_select="golomb"
1710 flac_encoder_select="golomb lpc"
1711 flashsv_decoder_select="zlib"
1712 flashsv_encoder_select="zlib"
1713 flashsv2_encoder_select="zlib"
1714 flashsv2_decoder_select="zlib"
1715 flv_decoder_select="h263_decoder"
1716 flv_encoder_select="h263_encoder"
1717 fraps_decoder_select="huffman"
1718 h261_decoder_select="error_resilience mpegvideo"
1719 h261_encoder_select="aandcttables mpegvideoenc"
1720 h263_decoder_select="error_resilience h263_parser mpegvideo"
1721 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1722 h263i_decoder_select="h263_decoder"
1723 h263p_encoder_select="h263_encoder"
1724 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1725 huffyuv_encoder_select="huffman"
1726 iac_decoder_select="fft mdct sinewin"
1727 imc_decoder_select="fft mdct sinewin"
1728 jpegls_decoder_select="golomb"
1729 jpegls_encoder_select="golomb"
1730 ljpeg_encoder_select="aandcttables mpegvideoenc"
1731 loco_decoder_select="golomb"
1732 mdec_decoder_select="error_resilience mpegvideo"
1733 mjpeg_encoder_select="aandcttables mpegvideoenc"
1734 mlp_decoder_select="mlp_parser"
1735 mp1_decoder_select="mpegaudio"
1736 mp1float_decoder_select="mpegaudio"
1737 mp2_decoder_select="mpegaudio"
1738 mp2float_decoder_select="mpegaudio"
1739 mp3_decoder_select="mpegaudio"
1740 mp3adu_decoder_select="mpegaudio"
1741 mp3adufloat_decoder_select="mpegaudio"
1742 mp3float_decoder_select="mpegaudio"
1743 mp3on4_decoder_select="mpegaudio"
1744 mp3on4float_decoder_select="mpegaudio"
1745 mpc7_decoder_select="mpegaudiodsp"
1746 mpc8_decoder_select="mpegaudiodsp"
1747 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1748 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1749 mpeg1video_decoder_select="error_resilience mpegvideo"
1750 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1751 mpeg2video_decoder_select="error_resilience mpegvideo"
1752 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1753 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1754 mpeg4_encoder_select="h263_encoder"
1755 msmpeg4v1_decoder_select="h263_decoder"
1756 msmpeg4v1_encoder_select="h263_encoder"
1757 msmpeg4v2_decoder_select="h263_decoder"
1758 msmpeg4v2_encoder_select="h263_encoder"
1759 msmpeg4v3_decoder_select="h263_decoder"
1760 msmpeg4v3_encoder_select="h263_encoder"
1761 mss2_decoder_select="vc1_decoder"
1762 nellymoser_decoder_select="mdct sinewin"
1763 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1764 nuv_decoder_select="lzo"
1765 png_decoder_select="zlib"
1766 png_encoder_select="zlib"
1767 qcelp_decoder_select="lsp"
1768 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1769 ra_144_encoder_select="audio_frame_queue lpc"
1770 ralf_decoder_select="golomb"
1771 rv10_decoder_select="h263_decoder"
1772 rv10_encoder_select="h263_encoder"
1773 rv20_decoder_select="h263_decoder"
1774 rv20_encoder_select="h263_encoder"
1775 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1776 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1777 shorten_decoder_select="golomb"
1778 sipr_decoder_select="lsp"
1779 snow_decoder_select="dwt h264qpel rangecoder"
1780 snow_encoder_select="aandcttables dwt h264qpel error_resilience mpegvideoenc rangecoder"
1781 sonic_decoder_select="golomb"
1782 sonic_encoder_select="golomb"
1783 sonic_ls_encoder_select="golomb"
1784 svq1_decoder_select="error_resilience mpegvideo"
1785 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1786 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1787 svq3_decoder_suggest="zlib"
1788 theora_decoder_select="vp3_decoder"
1789 tiff_decoder_suggest="zlib"
1790 tiff_encoder_suggest="zlib"
1791 truehd_decoder_select="mlp_parser"
1792 tscc_decoder_select="zlib"
1793 twinvq_decoder_select="mdct lsp sinewin"
1794 utvideo_encoder_select="huffman"
1795 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1796 vc1image_decoder_select="vc1_decoder"
1797 vorbis_decoder_select="mdct"
1798 vorbis_encoder_select="mdct"
1799 vp3_decoder_select="vp3dsp videodsp"
1800 vp5_decoder_select="h264chroma vp3dsp videodsp"
1801 vp6_decoder_select="h264chroma huffman vp3dsp videodsp"
1802 vp6a_decoder_select="vp6_decoder"
1803 vp6f_decoder_select="vp6_decoder"
1804 vp8_decoder_select="h264pred videodsp"
1805 wmapro_decoder_select="mdct sinewin"
1806 wmav1_decoder_select="mdct sinewin"
1807 wmav1_encoder_select="mdct sinewin"
1808 wmav2_decoder_select="mdct sinewin"
1809 wmav2_encoder_select="mdct sinewin"
1810 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1811 wmv1_decoder_select="h263_decoder"
1812 wmv1_encoder_select="h263_encoder"
1813 wmv2_decoder_select="h263_decoder"
1814 wmv2_encoder_select="h263_encoder"
1815 wmv3_decoder_select="vc1_decoder"
1816 wmv3image_decoder_select="wmv3_decoder"
1817 zerocodec_decoder_select="zlib"
1818 zlib_decoder_select="zlib"
1819 zlib_encoder_select="zlib"
1820 zmbv_decoder_select="zlib"
1821 zmbv_encoder_select="zlib"
1822
1823 # hardware accelerators
1824 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1825 dxva2_deps="dxva2api_h"
1826 vaapi_deps="va_va_h"
1827 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1828 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1829 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1830
1831 h263_vaapi_hwaccel_deps="vaapi"
1832 h263_vaapi_hwaccel_select="h263_decoder"
1833 h263_vdpau_hwaccel_deps="vdpau"
1834 h263_vdpau_hwaccel_select="h263_decoder"
1835 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1836 h264_dxva2_hwaccel_deps="dxva2"
1837 h264_dxva2_hwaccel_select="h264_decoder"
1838 h264_vaapi_hwaccel_deps="vaapi"
1839 h264_vaapi_hwaccel_select="h264_decoder"
1840 h264_vda_decoder_deps="vda"
1841 h264_vda_decoder_select="h264_decoder"
1842 h264_vda_hwaccel_deps="vda"
1843 h264_vda_hwaccel_select="h264_decoder"
1844 h264_vdpau_decoder_deps="vdpau"
1845 h264_vdpau_decoder_select="h264_decoder"
1846 h264_vdpau_hwaccel_deps="vdpau"
1847 h264_vdpau_hwaccel_select="h264_decoder"
1848 mpeg_vdpau_decoder_deps="vdpau"
1849 mpeg_vdpau_decoder_select="mpegvideo_decoder"
1850 mpeg1_vdpau_decoder_deps="vdpau"
1851 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1852 mpeg1_vdpau_hwaccel_deps="vdpau"
1853 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1854 mpeg2_crystalhd_decoder_select="crystalhd"
1855 mpeg2_dxva2_hwaccel_deps="dxva2"
1856 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1857 mpeg2_vaapi_hwaccel_deps="vaapi"
1858 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1859 mpeg2_vdpau_hwaccel_deps="vdpau"
1860 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1861 mpeg4_crystalhd_decoder_select="crystalhd"
1862 mpeg4_vaapi_hwaccel_deps="vaapi"
1863 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1864 mpeg4_vdpau_decoder_deps="vdpau"
1865 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1866 mpeg4_vdpau_hwaccel_deps="vdpau"
1867 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1868 msmpeg4_crystalhd_decoder_select="crystalhd"
1869 vc1_crystalhd_decoder_select="crystalhd"
1870 vc1_dxva2_hwaccel_deps="dxva2"
1871 vc1_dxva2_hwaccel_select="vc1_decoder"
1872 vc1_vaapi_hwaccel_deps="vaapi"
1873 vc1_vaapi_hwaccel_select="vc1_decoder"
1874 vc1_vdpau_decoder_deps="vdpau"
1875 vc1_vdpau_decoder_select="vc1_decoder"
1876 vc1_vdpau_hwaccel_deps="vdpau"
1877 vc1_vdpau_hwaccel_select="vc1_decoder"
1878 wmv3_crystalhd_decoder_select="crystalhd"
1879 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1880 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1881 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1882 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1883
1884 # parsers
1885 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1886 mpeg4video_parser_select="error_resilience mpegvideo"
1887 mpegvideo_parser_select="error_resilience mpegvideo"
1888 vc1_parser_select="error_resilience mpegvideo"
1889
1890 # external libraries
1891 libaacplus_encoder_deps="libaacplus"
1892 libcelt_decoder_deps="libcelt"
1893 libfaac_encoder_deps="libfaac"
1894 libfaac_encoder_select="audio_frame_queue"
1895 libfdk_aac_encoder_deps="libfdk_aac"
1896 libfdk_aac_encoder_select="audio_frame_queue"
1897 libgsm_decoder_deps="libgsm"
1898 libgsm_encoder_deps="libgsm"
1899 libgsm_ms_decoder_deps="libgsm"
1900 libgsm_ms_encoder_deps="libgsm"
1901 libilbc_decoder_deps="libilbc"
1902 libilbc_encoder_deps="libilbc"
1903 libmodplug_demuxer_deps="libmodplug"
1904 libmp3lame_encoder_deps="libmp3lame"
1905 libmp3lame_encoder_select="audio_frame_queue"
1906 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1907 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1908 libopencore_amrnb_encoder_select="audio_frame_queue"
1909 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1910 libopenjpeg_decoder_deps="libopenjpeg"
1911 libopenjpeg_encoder_deps="libopenjpeg"
1912 libopus_decoder_deps="libopus"
1913 libopus_encoder_deps="libopus"
1914 libopus_encoder_select="audio_frame_queue"
1915 libschroedinger_decoder_deps="libschroedinger"
1916 libschroedinger_encoder_deps="libschroedinger"
1917 libspeex_decoder_deps="libspeex"
1918 libspeex_encoder_deps="libspeex"
1919 libspeex_encoder_select="audio_frame_queue"
1920 libstagefright_h264_decoder_deps="libstagefright_h264"
1921 libtheora_encoder_deps="libtheora"
1922 libtwolame_encoder_deps="libtwolame"
1923 libvo_aacenc_encoder_deps="libvo_aacenc"
1924 libvo_aacenc_encoder_select="audio_frame_queue"
1925 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1926 libvorbis_decoder_deps="libvorbis"
1927 libvorbis_encoder_deps="libvorbis"
1928 libvorbis_encoder_select="audio_frame_queue"
1929 libvpx_vp8_decoder_deps="libvpx"
1930 libvpx_vp8_encoder_deps="libvpx"
1931 libvpx_vp9_decoder_deps="libvpx"
1932 libvpx_vp9_encoder_deps="libvpx"
1933 libx264_encoder_deps="libx264"
1934 libx264rgb_encoder_deps="libx264"
1935 libxavs_encoder_deps="libxavs"
1936 libxvid_encoder_deps="libxvid"
1937 libutvideo_decoder_deps="libutvideo"
1938 libutvideo_encoder_deps="libutvideo"
1939
1940 # demuxers / muxers
1941 ac3_demuxer_select="ac3_parser"
1942 asf_stream_muxer_select="asf_muxer"
1943 avisynth_demuxer_deps="avisynth"
1944 dirac_demuxer_select="dirac_parser"
1945 dts_demuxer_select="dca_parser"
1946 dtshd_demuxer_select="dca_parser"
1947 eac3_demuxer_select="ac3_parser"
1948 f4v_muxer_select="mov_muxer"
1949 flac_demuxer_select="flac_parser"
1950 ipod_muxer_select="mov_muxer"
1951 ismv_muxer_select="mov_muxer"
1952 libnut_demuxer_deps="libnut"
1953 libnut_muxer_deps="libnut"
1954 matroska_audio_muxer_select="matroska_muxer"
1955 matroska_demuxer_suggest="bzlib lzo zlib"
1956 mov_demuxer_suggest="zlib"
1957 mov_muxer_select="rtpenc_chain"
1958 mp3_demuxer_select="mpegaudio_parser"
1959 mp4_muxer_select="mov_muxer"
1960 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1961 mpegtsraw_demuxer_select="mpegts_demuxer"
1962 mxf_d10_muxer_select="mxf_muxer"
1963 ogg_demuxer_select="golomb"
1964 psp_muxer_select="mov_muxer"
1965 rtp_demuxer_select="sdp_demuxer"
1966 rtp_muxer_select="mpegvideo"
1967 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1968 rtsp_demuxer_select="http_protocol rtpdec"
1969 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1970 sap_demuxer_select="sdp_demuxer"
1971 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1972 sdp_demuxer_select="rtpdec"
1973 smoothstreaming_muxer_select="ismv_muxer"
1974 spdif_muxer_select="aac_parser"
1975 tak_demuxer_select="tak_parser"
1976 tg2_muxer_select="mov_muxer"
1977 tgp_muxer_select="mov_muxer"
1978 vobsub_demuxer_select="mpegps_demuxer"
1979 w64_demuxer_deps="wav_demuxer"
1980 w64_muxer_deps="wav_muxer"
1981
1982 # indevs / outdevs
1983 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1984 alsa_outdev_deps="alsa_asoundlib_h"
1985 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1986 caca_outdev_deps="libcaca"
1987 dshow_indev_deps="IBaseFilter"
1988 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1989 dv1394_indev_deps="dv1394 dv_demuxer"
1990 fbdev_indev_deps="linux_fb_h"
1991 iec61883_indev_deps="libiec61883"
1992 jack_indev_deps="jack_jack_h sem_timedwait"
1993 lavfi_indev_deps="avfilter"
1994 libcdio_indev_deps="libcdio"
1995 libdc1394_indev_deps="libdc1394"
1996 libv4l2_indev_deps="libv4l2"
1997 openal_indev_deps="openal"
1998 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1999 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2000 pulse_indev_deps="libpulse"
2001 sdl_outdev_deps="sdl"
2002 sndio_indev_deps="sndio_h"
2003 sndio_outdev_deps="sndio_h"
2004 v4l_indev_deps="linux_videodev_h"
2005 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2006 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2007 vfwcap_indev_extralibs="-lavicap32"
2008 x11grab_indev_deps="x11grab"
2009
2010 # protocols
2011 bluray_protocol_deps="libbluray"
2012 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2013 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2014 ffrtmpcrypt_protocol_select="tcp_protocol"
2015 ffrtmphttp_protocol_deps="!librtmp_protocol"
2016 ffrtmphttp_protocol_select="http_protocol"
2017 gopher_protocol_select="network"
2018 httpproxy_protocol_select="tcp_protocol"
2019 http_protocol_select="tcp_protocol"
2020 https_protocol_select="tls_protocol"
2021 librtmp_protocol_deps="librtmp"
2022 librtmpe_protocol_deps="librtmp"
2023 librtmps_protocol_deps="librtmp"
2024 librtmpt_protocol_deps="librtmp"
2025 librtmpte_protocol_deps="librtmp"
2026 mmsh_protocol_select="http_protocol"
2027 mmst_protocol_select="network"
2028 rtmp_protocol_deps="!librtmp_protocol"
2029 rtmp_protocol_select="tcp_protocol"
2030 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2031 rtmps_protocol_deps="!librtmp_protocol"
2032 rtmps_protocol_select="tls_protocol"
2033 rtmpt_protocol_select="ffrtmphttp_protocol"
2034 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2035 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2036 rtp_protocol_select="udp_protocol"
2037 sctp_protocol_deps="struct_sctp_event_subscribe"
2038 sctp_protocol_select="network"
2039 srtp_protocol_select="rtp_protocol"
2040 tcp_protocol_select="network"
2041 tls_protocol_deps_any="openssl gnutls"
2042 tls_protocol_select="tcp_protocol"
2043 udp_protocol_select="network"
2044
2045 # filters
2046 aconvert_filter_deps="swresample"
2047 amovie_filter_deps="avcodec avformat"
2048 aresample_filter_deps="swresample"
2049 ass_filter_deps="libass"
2050 asyncts_filter_deps="avresample"
2051 atempo_filter_deps="avcodec rdft"
2052 blackframe_filter_deps="gpl"
2053 boxblur_filter_deps="gpl"
2054 colormatrix_filter_deps="gpl"
2055 cropdetect_filter_deps="gpl"
2056 decimate_filter_deps="gpl avcodec"
2057 delogo_filter_deps="gpl"
2058 deshake_filter_deps="avcodec"
2059 drawtext_filter_deps="libfreetype"
2060 ebur128_filter_deps="gpl"
2061 flite_filter_deps="libflite"
2062 frei0r_filter_deps="frei0r dlopen"
2063 frei0r_filter_extralibs='$ldl'
2064 frei0r_src_filter_deps="frei0r dlopen"
2065 frei0r_src_filter_extralibs='$ldl'
2066 geq_filter_deps="gpl"
2067 histeq_filter_deps="gpl"
2068 hqdn3d_filter_deps="gpl"
2069 hue_filter_deps="gpl"
2070 kerndeint_filter_deps="gpl"
2071 movie_filter_deps="avcodec avformat"
2072 mp_filter_deps="gpl avcodec swscale inline_asm"
2073 mptestsrc_filter_deps="gpl"
2074 negate_filter_deps="lut_filter"
2075 noise_filter_deps="gpl"
2076 resample_filter_deps="avresample"
2077 ocv_filter_deps="libopencv"
2078 pan_filter_deps="swresample"
2079 pp_filter_deps="gpl postproc"
2080 removelogo_filter_deps="avcodec avformat swscale"
2081 scale_filter_deps="swscale"
2082 smartblur_filter_deps="gpl swscale"
2083 showspectrum_filter_deps="avcodec rdft"
2084 stereo3d_filter_deps="gpl"
2085 subtitles_filter_deps="avformat avcodec libass"
2086 super2xsai_filter_deps="gpl"
2087 tinterlace_filter_deps="gpl"
2088 yadif_filter_deps="gpl"
2089 pixfmts_super2xsai_test_deps="super2xsai_filter"
2090 tinterlace_merge_test_deps="tinterlace_filter"
2091 tinterlace_pad_test_deps="tinterlace_filter"
2092
2093 # libraries
2094 avcodec_deps="avutil"
2095 avdevice_deps="avutil avcodec avformat"
2096 avfilter_deps="avutil"
2097 avformat_deps="avutil avcodec"
2098 avresample_deps="avutil"
2099 postproc_deps="avutil gpl"
2100 swscale_deps="avutil"
2101
2102 # programs
2103 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2104 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2105                setpts_filter null_filter anull_filter ffabuffersink_filter"
2106 ffplay_deps="avcodec avformat swscale swresample sdl"
2107 ffplay_select="ffbuffersink_filter rdft crop_filter"
2108 ffprobe_deps="avcodec avformat"
2109 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2110 ffserver_extralibs='$ldl'
2111
2112 # documentation
2113 podpages_deps="perl"
2114 manpages_deps="perl pod2man"
2115 htmlpages_deps="texi2html"
2116 txtpages_deps="makeinfo"
2117 doc_deps_any="manpages htmlpages podpages txtpages"
2118
2119 # default parameters
2120
2121 logfile="config.log"
2122
2123 # installation paths
2124 prefix_default="/usr/local"
2125 bindir_default='${prefix}/bin'
2126 datadir_default='${prefix}/share/ffmpeg'
2127 incdir_default='${prefix}/include'
2128 libdir_default='${prefix}/lib'
2129 mandir_default='${prefix}/share/man'
2130 shlibdir_default="$libdir_default"
2131
2132 # toolchain
2133 ar_default="ar"
2134 cc_default="gcc"
2135 cxx_default="g++"
2136 host_cc_default="gcc"
2137 cp_f="cp -f"
2138 install="install"
2139 ln_s="ln -s -f"
2140 nm_default="nm -g"
2141 objformat="elf"
2142 pkg_config_default=pkg-config
2143 ranlib="ranlib"
2144 strip_default="strip"
2145 yasmexe_default="yasm"
2146
2147 nogas=":"
2148
2149 # machine
2150 arch_default=$(uname -m)
2151 cpu="generic"
2152
2153 # OS
2154 target_os_default=$(tolower $(uname -s))
2155 host_os=$target_os_default
2156
2157 # configurable options
2158 enable $PROGRAM_LIST
2159 enable $DOCUMENT_LIST
2160 enable $(filter_out avresample $LIBRARY_LIST)
2161 enable stripping
2162
2163 enable asm
2164 enable debug
2165 enable doc
2166 enable optimizations
2167 enable runtime_cpudetect
2168 enable safe_bitstream_reader
2169 enable static
2170 enable swscale_alpha
2171
2172 # build settings
2173 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2174 FFSERVERLDFLAGS=-Wl,-E
2175 LIBPREF="lib"
2176 LIBSUF=".a"
2177 FULLNAME='$(NAME)$(BUILDSUF)'
2178 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2179 SLIBPREF="lib"
2180 SLIBSUF=".so"
2181 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2182 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2183 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2184 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2185 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2186 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2187
2188 asflags_filter=echo
2189 cflags_filter=echo
2190 ldflags_filter=echo
2191
2192 AS_C='-c'
2193 AS_O='-o $@'
2194 CC_C='-c'
2195 CC_E='-E -o $@'
2196 CC_O='-o $@'
2197 CXX_C='-c'
2198 CXX_O='-o $@'
2199 LD_O='-o $@'
2200 LD_LIB='-l%'
2201 LD_PATH='-L'
2202 HOSTCC_C='-c'
2203 HOSTCC_O='-o $@'
2204 HOSTLD_O='-o $@'
2205
2206 host_cflags='-O3 -g'
2207 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2208 host_libs='-lm'
2209 host_cflags_filter=echo
2210 host_ldflags_filter=echo
2211
2212 target_path='$(CURDIR)'
2213
2214 # since the object filename is not given with the -MM flag, the compiler
2215 # is only able to print the basename, and we must add the path ourselves
2216 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2217 DEPFLAGS='-MM'
2218
2219 # find source path
2220 if test -f configure; then
2221     source_path=.
2222 else
2223     source_path=$(cd $(dirname "$0"); pwd)
2224     echo "$source_path" | grep -q '[[:blank:]]' &&
2225         die "Out of tree builds are impossible with whitespace in source path."
2226     test -e "$source_path/config.h" &&
2227         die "Out of tree builds are impossible with config.h in source dir."
2228 fi
2229
2230 for v in "$@"; do
2231     r=${v#*=}
2232     l=${v%"$r"}
2233     r=$(sh_quote "$r")
2234     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2235 done
2236
2237 find_things(){
2238     thing=$1
2239     pattern=$2
2240     file=$source_path/$3
2241     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2242 }
2243
2244 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2245 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2246 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2247 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2248 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2249 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2250 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2251 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2252 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2253 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2254 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2255
2256 ALL_COMPONENTS="
2257     $BSF_LIST
2258     $DECODER_LIST
2259     $DEMUXER_LIST
2260     $ENCODER_LIST
2261     $FILTER_LIST
2262     $HWACCEL_LIST
2263     $INDEV_LIST
2264     $MUXER_LIST
2265     $OUTDEV_LIST
2266     $PARSER_LIST
2267     $PROTOCOL_LIST
2268 "
2269
2270 for n in $COMPONENT_LIST; do
2271     v=$(toupper ${n%s})_LIST
2272     eval enable \$$v
2273     eval ${n}_if_any="\$$v"
2274 done
2275
2276 enable $ARCH_EXT_LIST
2277
2278 die_unknown(){
2279     echo "Unknown option \"$1\"."
2280     echo "See $0 --help for available options."
2281     exit 1
2282 }
2283
2284 print_3_columns() {
2285     cat | tr ' ' '\n' | sort | pr -r -3 -t
2286 }
2287
2288 show_list() {
2289     suffix=_$1
2290     shift
2291     echo $* | sed s/$suffix//g | print_3_columns
2292     exit 0
2293 }
2294
2295 rand_list(){
2296     IFS=', '
2297     set -- $*
2298     unset IFS
2299     for thing; do
2300         comp=${thing%:*}
2301         prob=${thing#$comp}
2302         prob=${prob#:}
2303         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2304         echo "prob ${prob:-0.5}"
2305         printf '%s\n' $comp
2306     done
2307 }
2308
2309 do_random(){
2310     action=$1
2311     shift
2312     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2313     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2314 }
2315
2316 for opt do
2317     optval="${opt#*=}"
2318     case "$opt" in
2319         --extra-ldflags=*)
2320             add_ldflags $optval
2321         ;;
2322         --extra-libs=*)
2323             add_extralibs $optval
2324         ;;
2325         --disable-devices)
2326             disable $INDEV_LIST $OUTDEV_LIST
2327         ;;
2328         --enable-debug=*)
2329             debuglevel="$optval"
2330         ;;
2331         --disable-programs)
2332             disable $PROGRAM_LIST
2333         ;;
2334         --disable-everything)
2335             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2336         ;;
2337         --disable-all)
2338             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2339             disable $LIBRARY_LIST $PROGRAM_LIST doc
2340         ;;
2341         --enable-random|--disable-random)
2342             action=${opt%%-random}
2343             do_random ${action#--} $COMPONENT_LIST
2344         ;;
2345         --enable-random=*|--disable-random=*)
2346             action=${opt%%-random=*}
2347             do_random ${action#--} $optval
2348         ;;
2349         --enable-*=*|--disable-*=*)
2350             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2351             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2352             eval list=\$$(toupper $thing)_LIST
2353             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2354             list=$(filter "$name" $list)
2355             [ "$list" = "" ] && warn "Option $opt did not match anything"
2356             $action $list
2357         ;;
2358         --enable-?*|--disable-?*)
2359             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2360             if is_in $option $COMPONENT_LIST; then
2361                 test $action = disable && action=unset
2362                 eval $action \$$(toupper ${option%s})_LIST
2363             elif is_in $option $CMDLINE_SELECT; then
2364                 $action $option
2365             else
2366                 die_unknown $opt
2367             fi
2368         ;;
2369         --list-*)
2370             NAME="${opt#--list-}"
2371             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2372             NAME=${NAME%s}
2373             eval show_list $NAME \$$(toupper $NAME)_LIST
2374         ;;
2375         --help|-h) show_help
2376         ;;
2377         --fatal-warnings) enable fatal_warnings
2378         ;;
2379         *)
2380             optname="${opt%%=*}"
2381             optname="${optname#--}"
2382             optname=$(echo "$optname" | sed 's/-/_/g')
2383             if is_in $optname $CMDLINE_SET; then
2384                 eval $optname='$optval'
2385             elif is_in $optname $CMDLINE_APPEND; then
2386                 append $optname "$optval"
2387             else
2388                 die_unknown $opt
2389             fi
2390         ;;
2391     esac
2392 done
2393
2394 disabled logging && logfile=/dev/null
2395
2396 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2397 set >> $logfile
2398
2399 test -n "$cross_prefix" && enable cross_compile
2400
2401 if enabled cross_compile; then
2402     test -n "$arch" && test -n "$target_os" ||
2403         die "Must specify target arch and OS when cross-compiling"
2404 fi
2405
2406 ar_default="${cross_prefix}${ar_default}"
2407 cc_default="${cross_prefix}${cc_default}"
2408 cxx_default="${cross_prefix}${cxx_default}"
2409 nm_default="${cross_prefix}${nm_default}"
2410 pkg_config_default="${cross_prefix}${pkg_config_default}"
2411 ranlib="${cross_prefix}${ranlib}"
2412 strip_default="${cross_prefix}${strip_default}"
2413
2414 sysinclude_default="${sysroot}/usr/include"
2415
2416 case "$toolchain" in
2417     clang-asan)
2418         cc_default="clang"
2419         add_cflags  -faddress-sanitizer
2420         add_ldflags -faddress-sanitizer
2421     ;;
2422     clang-tsan)
2423         cc_default="clang"
2424         add_cflags  -fthread-sanitizer
2425         add_ldflags -fthread-sanitizer
2426     ;;
2427     msvc)
2428         cc_default="c99wrap cl"
2429         ld_default="c99wrap link"
2430         nm_default="dumpbin -symbols"
2431         ar_default="lib"
2432         target_os_default="win32"
2433     ;;
2434     ?*)
2435         die "Unknown toolchain $toolchain"
2436     ;;
2437 esac
2438
2439 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2440 enabled cross_compile || host_cc_default=$cc
2441 set_default host_cc
2442
2443 if ! $pkg_config --version >/dev/null 2>&1; then
2444     warn "$pkg_config not found, library detection may fail."
2445     pkg_config=false
2446 fi
2447
2448 exesuf() {
2449     case $1 in
2450         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2451     esac
2452 }
2453
2454 EXESUF=$(exesuf $target_os)
2455 HOSTEXESUF=$(exesuf $host_os)
2456
2457 # set temporary file name
2458 : ${TMPDIR:=$TEMPDIR}
2459 : ${TMPDIR:=$TMP}
2460 : ${TMPDIR:=/tmp}
2461
2462 if ! check_cmd mktemp -u XXXXXX; then
2463     # simple replacement for missing mktemp
2464     # NOT SAFE FOR GENERAL USE
2465     mktemp(){
2466         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2467     }
2468 fi
2469
2470 tmpfile(){
2471     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2472         (set -C; exec > $tmp) 2>/dev/null ||
2473         die "Unable to create temporary file in $TMPDIR."
2474     append TMPFILES $tmp
2475     eval $1=$tmp
2476 }
2477
2478 trap 'rm -f -- $TMPFILES' EXIT
2479
2480 tmpfile TMPASM .asm
2481 tmpfile TMPC   .c
2482 tmpfile TMPCPP .cpp
2483 tmpfile TMPE   $EXESUF
2484 tmpfile TMPH   .h
2485 tmpfile TMPO   .o
2486 tmpfile TMPS   .S
2487 tmpfile TMPSH  .sh
2488 tmpfile TMPV   .ver
2489
2490 unset -f mktemp
2491
2492 chmod +x $TMPE
2493
2494 # make sure we can execute files in $TMPDIR
2495 cat > $TMPSH 2>> $logfile <<EOF
2496 #! /bin/sh
2497 EOF
2498 chmod +x $TMPSH >> $logfile 2>&1
2499 if ! $TMPSH >> $logfile 2>&1; then
2500     cat <<EOF
2501 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2502 variable to another directory and make sure that it is not mounted noexec.
2503 EOF
2504     die "Sanity test failed."
2505 fi
2506
2507 ccc_flags(){
2508     for flag; do
2509         case $flag in
2510             -std=c99)           echo -c99                       ;;
2511             -mcpu=*)            echo -arch ${flag#*=}           ;;
2512             -mieee)             echo -ieee                      ;;
2513             -O*|-fast)          echo $flag                      ;;
2514             -fno-math-errno)    echo -assume nomath_errno       ;;
2515             -g)                 echo -g3                        ;;
2516             -Wall)              echo -msg_enable level2         ;;
2517             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2518             -Wl,*)              echo $flag                      ;;
2519             -f*|-W*)                                            ;;
2520             *)                  echo $flag                      ;;
2521         esac
2522    done
2523 }
2524
2525 msvc_flags(){
2526     for flag; do
2527         case $flag in
2528             -fomit-frame-pointer) echo -Oy ;;
2529             -g)                   echo -Z7 ;;
2530             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2531                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2532                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2533                                        -wd4554 \
2534                                        -wd4996 -wd4273 ;;
2535             -std=c99)             ;;
2536             -fno-math-errno)      ;;
2537             -fno-common)          ;;
2538             -fno-signed-zeros)    ;;
2539             -fPIC)                ;;
2540             -lz)                  echo zlib.lib ;;
2541             -lavifil32)           echo vfw32.lib ;;
2542             -lavicap32)           echo vfw32.lib user32.lib ;;
2543             -l*)                  echo ${flag#-l}.lib ;;
2544             *)                    echo $flag ;;
2545         esac
2546     done
2547 }
2548
2549 pgi_flags(){
2550     for flag; do
2551         case $flag in
2552             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2553             -fomit-frame-pointer) echo -Mnoframe ;;
2554             -g)                   echo -gopt ;;
2555             *)                    echo $flag ;;
2556         esac
2557     done
2558 }
2559
2560 suncc_flags(){
2561     for flag; do
2562         case $flag in
2563             -march=*|-mcpu=*)
2564                 case "${flag#*=}" in
2565                     native)                   echo -xtarget=native       ;;
2566                     v9|niagara)               echo -xarch=sparc          ;;
2567                     ultrasparc)               echo -xarch=sparcvis       ;;
2568                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2569                     i586|pentium)             echo -xchip=pentium        ;;
2570                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2571                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2572                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2573                     pentium4*)          echo -xtarget=pentium4           ;;
2574                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2575                     *-sse3)             echo -xarch=sse3                 ;;
2576                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2577                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2578                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2579                     amdfam10|barcelona)       echo -xtarget=barcelona    ;;
2580                     bdver*)                   echo -xarch=avx            ;;
2581                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2582                     k8|opteron|athlon64|athlon-fx)
2583                                               echo -xarch=sse2a          ;;
2584                     athlon*)                  echo -xarch=pentium_proa   ;;
2585                 esac
2586                 ;;
2587             -std=c99)             echo -xc99              ;;
2588             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2589             -fPIC)                echo -KPIC -xcode=pic32 ;;
2590             -W*,*)                echo $flag              ;;
2591             -f*-*|-W*|-mimpure-text)                      ;;
2592             -shared)              echo -G                 ;;
2593             *)                    echo $flag              ;;
2594         esac
2595     done
2596 }
2597
2598 tms470_flags(){
2599     for flag; do
2600         case $flag in
2601             -march=*|-mcpu=*)
2602                 case "${flag#*=}" in
2603                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2604                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2605                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2606                     armv6*|arm11*)          echo -mv=6   ;;
2607                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2608                                             echo -mv=5e  ;;
2609                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2610                 esac
2611                 ;;
2612             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2613             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2614             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2615             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2616             -msoft-float)   echo --float_support=vfplib       ;;
2617             -O[0-3]|-mf=*)  echo $flag                        ;;
2618             -g)             echo -g -mn                       ;;
2619             -pds=*)         echo $flag                        ;;
2620             -D*|-I*)        echo $flag                        ;;
2621             --gcc|--abi=*)  echo $flag                        ;;
2622             -me)            echo $flag                        ;;
2623         esac
2624     done
2625 }
2626
2627 probe_cc(){
2628     pfx=$1
2629     _cc=$2
2630
2631     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2632     unset _ld_o _ldflags _ld_lib _ld_path
2633     unset _depflags _DEPCMD _DEPFLAGS
2634     _flags_filter=echo
2635
2636     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2637         _type=llvm_gcc
2638         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2639         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2640         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2641         _cflags_speed='-O3'
2642         _cflags_size='-Os'
2643     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2644         _type=gcc
2645         gcc_version=$($_cc --version | head -n1)
2646         gcc_basever=$($_cc -dumpversion)
2647         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2648         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2649         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2650         if ! $_cc -dumpversion | grep -q '^2\.'; then
2651             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2652         fi
2653         _cflags_speed='-O3'
2654         _cflags_size='-Os'
2655     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2656         _type=icc
2657         _ident=$($_cc --version | head -n1)
2658         _depflags='-MMD'
2659         _cflags_speed='-O3'
2660         _cflags_size='-Os'
2661         _cflags_noopt='-O1'
2662     elif $_cc -v 2>&1 | grep -q xlc; then
2663         _type=xlc
2664         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2665         _cflags_speed='-O5'
2666         _cflags_size='-O5 -qcompact'
2667     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2668         _type=ccc
2669         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2670         _DEPFLAGS='-M'
2671         _cflags_speed='-fast'
2672         _cflags_size='-O1'
2673         _flags_filter=ccc_flags
2674     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2675         test -d "$sysroot" || die "No valid sysroot specified."
2676         _type=armcc
2677         _ident=$($_cc --vsn | head -n1)
2678         armcc_conf="$PWD/armcc.conf"
2679         $_cc --arm_linux_configure                 \
2680              --arm_linux_config_file="$armcc_conf" \
2681              --configure_sysroot="$sysroot"        \
2682              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2683              die "Error creating armcc configuration file."
2684         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2685         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2686         as_default="${cross_prefix}gcc"
2687         _depflags='-MMD'
2688         _cflags_speed='-O3'
2689         _cflags_size='-Os'
2690     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2691         _type=tms470
2692         _ident=$($_cc -version | head -n1 | tr -s ' ')
2693         _flags='--gcc --abi=eabi -me'
2694         _cc_e='-ppl -fe=$@'
2695         _cc_o='-fe=$@'
2696         _depflags='-ppa -ppd=$(@:.o=.d)'
2697         _cflags_speed='-O3 -mf=5'
2698         _cflags_size='-O3 -mf=2'
2699         _flags_filter=tms470_flags
2700     elif $_cc -v 2>&1 | grep -q clang; then
2701         _type=clang
2702         _ident=$($_cc --version | head -n1)
2703         _depflags='-MMD'
2704         _cflags_speed='-O3'
2705         _cflags_size='-Os'
2706     elif $_cc -V 2>&1 | grep -q Sun; then
2707         _type=suncc
2708         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2709         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2710         _DEPFLAGS='-xM1 -xc99'
2711         _ldflags='-std=c99'
2712         _cflags_speed='-O5'
2713         _cflags_size='-O5 -xspace'
2714         _flags_filter=suncc_flags
2715     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2716         _type=pathscale
2717         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2718         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2719         _cflags_speed='-O2'
2720         _cflags_size='-Os'
2721         _flags_filter='filter_out -Wdisabled-optimization'
2722     elif $_cc -v 2>&1 | grep -q Open64; then
2723         _type=open64
2724         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2725         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2726         _cflags_speed='-O2'
2727         _cflags_size='-Os'
2728         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2729     elif $_cc -V 2>&1 | grep -q Portland; then
2730         _type=pgi
2731         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2732         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2733         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2734         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2735         _cflags_noopt="-O1"
2736         _flags_filter=pgi_flags
2737     elif $_cc 2>&1 | grep -q Microsoft; then
2738         _type=msvc
2739         _ident=$($cc 2>&1 | head -n1)
2740         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2741         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2742         _cflags_speed="-O2"
2743         _cflags_size="-O1"
2744         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2745         if $_cc 2>&1 | grep -q Linker; then
2746             _ld_o='-out $@'
2747         else
2748             _ld_o='-Fe$@'
2749         fi
2750         _cc_o='-Fo $@'
2751         _cc_e='-P -Fi $@'
2752         _flags_filter=msvc_flags
2753         _ld_lib='lib%.a'
2754         _ld_path='-libpath:'
2755         _flags='-nologo'
2756         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2757         if [ $pfx = hostcc ]; then
2758             append _cflags -Dsnprintf=_snprintf
2759         fi
2760         disable stripping
2761     fi
2762
2763     eval ${pfx}_type=\$_type
2764     eval ${pfx}_ident=\$_ident
2765 }
2766
2767 set_ccvars(){
2768     eval ${1}_C=\${_cc_c-\${${1}_C}}
2769     eval ${1}_E=\${_cc_e-\${${1}_E}}
2770     eval ${1}_O=\${_cc_o-\${${1}_O}}
2771
2772     if [ -n "$_depflags" ]; then
2773         eval ${1}_DEPFLAGS=\$_depflags
2774     else
2775         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2776         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2777         eval DEP${1}FLAGS=\$_flags
2778     fi
2779 }
2780
2781 probe_cc cc "$cc"
2782 cflags_filter=$_flags_filter
2783 cflags_speed=$_cflags_speed
2784 cflags_size=$_cflags_size
2785 cflags_noopt=$_cflags_noopt
2786 add_cflags $_flags $_cflags
2787 cc_ldflags=$_ldflags
2788 set_ccvars CC
2789
2790 probe_cc hostcc "$host_cc"
2791 host_cflags_filter=$_flags_filter
2792 add_host_cflags  $_flags $_cflags
2793 set_ccvars HOSTCC
2794
2795 test -n "$cc_type" && enable $cc_type ||
2796     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2797
2798 : ${as_default:=$cc}
2799 : ${dep_cc_default:=$cc}
2800 : ${ld_default:=$cc}
2801 : ${host_ld_default:=$host_cc}
2802 set_default ar as dep_cc ld host_ld
2803
2804 probe_cc as "$as"
2805 asflags_filter=$_flags_filter
2806 add_asflags $_flags $_cflags
2807 set_ccvars AS
2808
2809 probe_cc ld "$ld"
2810 ldflags_filter=$_flags_filter
2811 add_ldflags $_flags $_ldflags
2812 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2813 LD_O=${_ld_o-$LD_O}
2814 LD_LIB=${_ld_lib-$LD_LIB}
2815 LD_PATH=${_ld_path-$LD_PATH}
2816
2817 probe_cc hostld "$host_ld"
2818 host_ldflags_filter=$_flags_filter
2819 add_host_ldflags $_flags $_ldflags
2820 HOSTLD_O=${_ld_o-$HOSTLD_O}
2821
2822 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2823     probe_cc depcc "$dep_cc"
2824     CCDEP=${_DEPCMD:-$DEPCMD}
2825     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2826     DEPCCFLAGS=$_flags
2827 fi
2828
2829 if $ar 2>&1 | grep -q Microsoft; then
2830     arflags="-nologo"
2831     ar_o='-out:$@'
2832 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2833     arflags="rq"
2834     ar_o='$@'
2835 else
2836     arflags="rc"
2837     ar_o='$@'
2838 fi
2839
2840 add_cflags $extra_cflags
2841 add_cxxflags $extra_cxxflags
2842 add_asflags $extra_cflags
2843
2844 if test -n "$sysroot"; then
2845     case "$cc_type" in
2846         gcc|llvm_gcc|clang)
2847             add_cppflags --sysroot="$sysroot"
2848             add_ldflags --sysroot="$sysroot"
2849         ;;
2850         tms470)
2851             add_cppflags -I"$sysinclude"
2852             add_ldflags  --sysroot="$sysroot"
2853         ;;
2854     esac
2855 fi
2856
2857 if test "$cpu" = host; then
2858     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2859
2860     case "$cc_type" in
2861         gcc|llvm_gcc)
2862             check_native(){
2863                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2864                 sed -n "/cc1.*$1=/{
2865                             s/.*$1=\\([^ ]*\\).*/\\1/
2866                             p
2867                             q
2868                         }" $TMPE
2869             }
2870             cpu=$(check_native -march || check_native -mcpu)
2871         ;;
2872     esac
2873
2874     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2875 fi
2876
2877 # Deal with common $arch aliases
2878 case "$arch" in
2879     aarch64|arm64)
2880         arch="aarch64"
2881     ;;
2882     arm*|iPad*)
2883         arch="arm"
2884     ;;
2885     mips*|IP*)
2886         arch="mips"
2887     ;;
2888     parisc*|hppa*)
2889         arch="parisc"
2890     ;;
2891     "Power Macintosh"|ppc*|powerpc*)
2892         arch="ppc"
2893     ;;
2894     s390|s390x)
2895         arch="s390"
2896     ;;
2897     sh4|sh)
2898         arch="sh4"
2899     ;;
2900     sun4u|sparc*)
2901         arch="sparc"
2902     ;;
2903     tilegx|tile-gx)
2904         arch="tilegx"
2905     ;;
2906     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2907         arch="x86"
2908     ;;
2909 esac
2910
2911 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2912 enable $arch
2913
2914 # Add processor-specific flags
2915 if enabled aarch64; then
2916
2917     case $cpu in
2918         armv*)
2919             cpuflags="-march=$cpu"
2920         ;;
2921         *)
2922             cpuflags="-mcpu=$cpu"
2923         ;;
2924     esac
2925
2926 elif enabled alpha; then
2927
2928     cpuflags="-mcpu=$cpu"
2929
2930 elif enabled arm; then
2931
2932     check_arm_arch() {
2933         check_cpp_condition stddef.h \
2934             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2935             $cpuflags
2936     }
2937
2938     probe_arm_arch() {
2939         if   check_arm_arch 4;        then echo armv4;
2940         elif check_arm_arch 4T;       then echo armv4t;
2941         elif check_arm_arch 5;        then echo armv5;
2942         elif check_arm_arch 5E;       then echo armv5e;
2943         elif check_arm_arch 5T;       then echo armv5t;
2944         elif check_arm_arch 5TE;      then echo armv5te;
2945         elif check_arm_arch 5TEJ;     then echo armv5te;
2946         elif check_arm_arch 6;        then echo armv6;
2947         elif check_arm_arch 6J;       then echo armv6j;
2948         elif check_arm_arch 6K;       then echo armv6k;
2949         elif check_arm_arch 6Z;       then echo armv6z;
2950         elif check_arm_arch 6ZK;      then echo armv6zk;
2951         elif check_arm_arch 6T2;      then echo armv6t2;
2952         elif check_arm_arch 7;        then echo armv7;
2953         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2954         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2955         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2956         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2957         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2958         fi
2959     }
2960
2961     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2962
2963     case $cpu in
2964         armv*)
2965             cpuflags="-march=$cpu"
2966             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2967         ;;
2968         *)
2969             cpuflags="-mcpu=$cpu"
2970             case $cpu in
2971                 cortex-a*)                               subarch=armv7a  ;;
2972                 cortex-r*)                               subarch=armv7r  ;;
2973                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2974                 arm11*)                                  subarch=armv6   ;;
2975                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2976                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2977                 *)                             subarch=$(probe_arm_arch) ;;
2978             esac
2979         ;;
2980     esac
2981
2982     case "$subarch" in
2983         armv5t*)    enable fast_clz                ;;
2984         armv[6-8]*) enable fast_clz fast_unaligned ;;
2985     esac
2986
2987 elif enabled avr32; then
2988
2989     case $cpu in
2990         ap7[02]0[0-2])
2991             subarch="avr32_ap"
2992             cpuflags="-mpart=$cpu"
2993         ;;
2994         ap)
2995             subarch="avr32_ap"
2996             cpuflags="-march=$cpu"
2997         ;;
2998         uc3[ab]*)
2999             subarch="avr32_uc"
3000             cpuflags="-mcpu=$cpu"
3001         ;;
3002         uc)
3003             subarch="avr32_uc"
3004             cpuflags="-march=$cpu"
3005         ;;
3006     esac
3007
3008 elif enabled bfin; then
3009
3010     cpuflags="-mcpu=$cpu"
3011
3012 elif enabled mips; then
3013
3014     cpuflags="-march=$cpu"
3015
3016     case $cpu in
3017         24kc)
3018             disable mipsfpu
3019             disable mipsdspr1
3020             disable mipsdspr2
3021         ;;
3022         24kf*)
3023             disable mipsdspr1
3024             disable mipsdspr2
3025         ;;
3026         24kec|34kc|1004kc)
3027             disable mipsfpu
3028             disable mipsdspr2
3029         ;;
3030         24kef*|34kf*|1004kf*)
3031             disable mipsdspr2
3032         ;;
3033         74kc)
3034             disable mipsfpu
3035         ;;
3036     esac
3037
3038 elif enabled ppc; then
3039
3040     case $(tolower $cpu) in
3041         601|ppc601|powerpc601)
3042             cpuflags="-mcpu=601"
3043             disable altivec
3044         ;;
3045         603*|ppc603*|powerpc603*)
3046             cpuflags="-mcpu=603"
3047             disable altivec
3048         ;;
3049         604*|ppc604*|powerpc604*)
3050             cpuflags="-mcpu=604"
3051             disable altivec
3052         ;;
3053         g3|75*|ppc75*|powerpc75*)
3054             cpuflags="-mcpu=750"
3055             disable altivec
3056         ;;
3057         g4|745*|ppc745*|powerpc745*)
3058             cpuflags="-mcpu=7450"
3059         ;;
3060         74*|ppc74*|powerpc74*)
3061             cpuflags="-mcpu=7400"
3062         ;;
3063         g5|970|ppc970|powerpc970)
3064             cpuflags="-mcpu=970"
3065         ;;
3066         power[3-7]*)
3067             cpuflags="-mcpu=$cpu"
3068         ;;
3069         cell)
3070             cpuflags="-mcpu=cell"
3071             enable ldbrx
3072         ;;
3073         e500mc)
3074             cpuflags="-mcpu=e500mc"
3075             disable altivec
3076         ;;
3077         e500v2)
3078             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3079             disable altivec
3080         ;;
3081         e500)
3082             cpuflags="-mcpu=8540 -mhard-float"
3083             disable altivec
3084         ;;
3085     esac
3086
3087 elif enabled sparc; then
3088
3089     case $cpu in
3090         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3091             cpuflags="-mcpu=$cpu"
3092             disable vis
3093         ;;
3094         ultrasparc*|niagara[234])
3095             cpuflags="-mcpu=$cpu"
3096         ;;
3097     esac
3098
3099 elif enabled x86; then
3100
3101     case $cpu in
3102         i[345]86|pentium)
3103             cpuflags="-march=$cpu"
3104             disable mmx
3105         ;;
3106         # targets that do NOT support conditional mov (cmov)
3107         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3108             cpuflags="-march=$cpu"
3109             disable cmov
3110         ;;
3111         # targets that do support conditional mov (cmov)
3112         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3113             cpuflags="-march=$cpu"
3114             enable cmov
3115             enable fast_cmov
3116         ;;
3117         # targets that do support conditional mov but on which it's slow
3118         pentium4|pentium4m|prescott|nocona)
3119             cpuflags="-march=$cpu"
3120             enable cmov
3121             disable fast_cmov
3122         ;;
3123     esac
3124
3125 fi
3126
3127 if [ "$cpu" != generic ]; then
3128     add_cflags  $cpuflags
3129     add_asflags $cpuflags
3130 fi
3131
3132 # compiler sanity check
3133 check_exec <<EOF
3134 int main(void){ return 0; }
3135 EOF
3136 if test "$?" != 0; then
3137     echo "$cc is unable to create an executable file."
3138     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3139         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3140         echo "Only do this if you know what cross compiling means."
3141     fi
3142     die "C compiler test failed."
3143 fi
3144
3145 add_cppflags -D_ISOC99_SOURCE
3146 add_cxxflags -D__STDC_CONSTANT_MACROS
3147 check_cflags -std=c99
3148 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3149 #include <stdlib.h>
3150 EOF
3151 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3152 #include <stdlib.h>
3153 EOF
3154
3155 check_host_cflags -std=c99
3156 check_host_cflags -Wall
3157
3158 check_64bit(){
3159     arch32=$1
3160     arch64=$2
3161     expr=$3
3162     check_code cc "" "int test[2*($expr) - 1]" &&
3163         subarch=$arch64 || subarch=$arch32
3164 }
3165
3166 case "$arch" in
3167     aarch64|alpha|ia64)
3168         spic=$shared
3169     ;;
3170     mips)
3171         check_64bit mips mips64 '_MIPS_SIM > 1'
3172         spic=$shared
3173     ;;
3174     parisc)
3175         check_64bit parisc parisc64 'sizeof(void *) > 4'
3176         spic=$shared
3177     ;;
3178     ppc)
3179         check_64bit ppc ppc64 'sizeof(void *) > 4'
3180         spic=$shared
3181     ;;
3182     sparc)
3183         check_64bit sparc sparc64 'sizeof(void *) > 4'
3184         spic=$shared
3185     ;;
3186     x86)
3187         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3188         if test "$subarch" = "x86_64"; then
3189             spic=$shared
3190         fi
3191     ;;
3192     ppc)
3193         check_cc <<EOF && subarch="ppc64"
3194         int test[(int)sizeof(char*) - 7];
3195 EOF
3196     ;;
3197 esac
3198
3199 enable $subarch
3200 enabled spic && enable pic
3201
3202 # OS specific
3203 case $target_os in
3204     haiku)
3205         prefix_default="/boot/common"
3206         network_extralibs="-lnetwork"
3207         host_libs=
3208         ;;
3209     sunos)
3210         FFSERVERLDFLAGS=""
3211         SHFLAGS='-shared -Wl,-h,$$(@F)'
3212         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3213         network_extralibs="-lsocket -lnsl"
3214         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3215         # When using suncc to build, the Solaris linker will mark
3216         # an executable with each instruction set encountered by
3217         # the Solaris assembler.  As our libraries contain their own
3218         # guards for processor-specific code, instead suppress
3219         # generation of the HWCAPS ELF section on Solaris x86 only.
3220         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3221         nm_default='nm -P -g'
3222         ;;
3223     netbsd)
3224         disable symver
3225         oss_indev_extralibs="-lossaudio"
3226         oss_outdev_extralibs="-lossaudio"
3227         enabled gcc || check_ldflags -Wl,-zmuldefs
3228         ;;
3229     openbsd|bitrig)
3230         disable symver
3231         SHFLAGS='-shared'
3232         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3233         SLIB_INSTALL_LINKS=
3234         oss_indev_extralibs="-lossaudio"
3235         oss_outdev_extralibs="-lossaudio"
3236         ;;
3237     dragonfly)
3238         disable symver
3239         ;;
3240     freebsd)
3241         ;;
3242     bsd/os)
3243         add_extralibs -lpoll -lgnugetopt
3244         strip="strip -d"
3245         ;;
3246     darwin)
3247         gas="gas-preprocessor.pl $cc"
3248         enabled ppc && add_asflags -force_cpusubtype_ALL
3249         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3250         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3251         strip="${strip} -x"
3252         add_ldflags -Wl,-dynamic,-search_paths_first
3253         SLIBSUF=".dylib"
3254         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3255         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3256         FFSERVERLDFLAGS=-Wl,-bind_at_load
3257         objformat="macho"
3258         enabled x86_64 && objformat="macho64"
3259         enabled_any pic shared ||
3260             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3261         ;;
3262     mingw32*)
3263         if test $target_os = "mingw32ce"; then
3264             disable network
3265         else
3266             target_os=mingw32
3267         fi
3268         LIBTARGET=i386
3269         if enabled x86_64; then
3270             LIBTARGET="i386:x86-64"
3271         elif enabled arm; then
3272             LIBTARGET=arm-wince
3273         fi
3274         shlibdir_default="$bindir_default"
3275         SLIBPREF=""
3276         SLIBSUF=".dll"
3277         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3278         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3279         dlltool="${cross_prefix}dlltool"
3280         if check_cmd lib.exe -list; then
3281             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3282             if enabled x86_64; then
3283                 LIBTARGET=x64
3284             fi
3285         elif check_cmd $dlltool --version; then
3286             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3287         fi
3288         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3289         SLIB_INSTALL_LINKS=
3290         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3291         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3292         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3293         objformat="win32"
3294         ranlib=:
3295         enable dos_paths
3296         ;;
3297     win32|win64)
3298         if enabled shared; then
3299             # Link to the import library instead of the normal static library
3300             # for shared libs.
3301             LD_LIB='%.lib'
3302             # Cannot build shared and static libraries at the same time with
3303             # MSVC.
3304             disable static
3305         fi
3306         shlibdir_default="$bindir_default"
3307         SLIBPREF=""
3308         SLIBSUF=".dll"
3309         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3310         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3311         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3312         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3313         SLIB_INSTALL_LINKS=
3314         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3315         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3316         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3317         objformat="win32"
3318         ranlib=:
3319         enable dos_paths
3320         ;;
3321     cygwin*)
3322         target_os=cygwin
3323         shlibdir_default="$bindir_default"
3324         SLIBPREF="cyg"
3325         SLIBSUF=".dll"
3326         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3327         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3328         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3329         SLIB_INSTALL_LINKS=
3330         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3331         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3332         objformat="win32"
3333         enable dos_paths
3334         ;;
3335     *-dos|freedos|opendos)
3336         network_extralibs="-lsocket"
3337         objformat="coff"
3338         enable dos_paths
3339         add_cppflags -U__STRICT_ANSI__
3340         ;;
3341     linux)
3342         enable dv1394
3343         ;;
3344     irix*)
3345         target_os=irix
3346         ranlib="echo ignoring ranlib"
3347         ;;
3348     os/2*)
3349         strip="lxlite -CS"
3350         ln_s="cp -f"
3351         objformat="aout"
3352         add_cppflags -D_GNU_SOURCE
3353         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3354         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3355         FFSERVERLDFLAGS=""
3356         LIBSUF="_s.a"
3357         SLIBPREF=""
3358         SLIBSUF=".dll"
3359         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3360         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3361         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3362             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3363             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3364             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3365             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3366             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3367         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3368             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3369         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3370         enable dos_paths
3371         enable_weak os2threads
3372         ;;
3373     gnu/kfreebsd)
3374         add_cppflags -D_BSD_SOURCE
3375         ;;
3376     gnu)
3377         ;;
3378     qnx)
3379         add_cppflags -D_QNX_SOURCE
3380         network_extralibs="-lsocket"
3381         ;;
3382     symbian)
3383         SLIBSUF=".dll"
3384         enable dos_paths
3385         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3386         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3387         add_ldflags -Wl,--target1-abs,--no-undefined \
3388                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3389                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3390         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3391                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3392                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3393         ;;
3394     osf1)
3395         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3396         FFSERVERLDFLAGS=
3397         ;;
3398     minix)
3399         ;;
3400     plan9)
3401         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3402                      -D_REENTRANT_SOURCE        \
3403                      -D_RESEARCH_SOURCE         \
3404                      -DFD_SETSIZE=96            \
3405                      -DHAVE_SOCK_OPTS
3406         add_compat strtod.o strtod=avpriv_strtod
3407         network_extralibs='-lbsd'
3408         exeobjs=compat/plan9/main.o
3409         disable ffserver
3410         cp_f='cp'
3411         ;;
3412     none)
3413         ;;
3414     *)
3415         die "Unknown OS '$target_os'."
3416         ;;
3417 esac
3418
3419 # determine libc flavour
3420
3421 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3422 if check_cpp_condition features.h "defined __UCLIBC__"; then
3423     libc_type=uclibc
3424     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3425 elif check_cpp_condition features.h "defined __GLIBC__"; then
3426     libc_type=glibc
3427     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3428 # MinGW headers can be installed on Cygwin, so check for newlib first.
3429 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3430     libc_type=newlib
3431     add_cppflags -U__STRICT_ANSI__
3432 elif check_header _mingw.h; then
3433     libc_type=mingw
3434     check_cpp_condition _mingw.h \
3435         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3436             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3437         die "ERROR: MinGW runtime version must be >= 3.15."
3438     add_cppflags -U__STRICT_ANSI__
3439     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3440             __MINGW64_VERSION_MAJOR < 3"; then
3441         add_compat msvcrt/snprintf.o
3442         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3443     fi
3444 elif check_func_headers stdlib.h _get_doserrno; then
3445     libc_type=msvcrt
3446     add_compat strtod.o strtod=avpriv_strtod
3447     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3448                                  _snprintf=avpriv_snprintf  \
3449                                  vsnprintf=avpriv_vsnprintf
3450 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3451     libc_type=klibc
3452 fi
3453
3454 test -n "$libc_type" && enable $libc_type
3455
3456 # hacks for compiler/libc/os combinations
3457
3458 if enabled_all tms470 glibc; then
3459     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3460     add_cppflags -D__USER_LABEL_PREFIX__=
3461     add_cppflags -D__builtin_memset=memset
3462     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3463     add_cflags   -pds=48    # incompatible redefinition of macro
3464 fi
3465
3466 if enabled_all ccc glibc; then
3467     add_ldflags -Wl,-z,now  # calls to libots crash without this
3468 fi
3469
3470 esc(){
3471     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3472 }
3473
3474 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3475
3476 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3477
3478 set_default $PATHS_LIST
3479 set_default nm
3480
3481 # we need to build at least one lib type
3482 if ! enabled_any static shared; then
3483     cat <<EOF
3484 At least one library type must be built.
3485 Specify --enable-static to build the static libraries or --enable-shared to
3486 build the shared libraries as well. To only build the shared libraries specify
3487 --disable-static in addition to --enable-shared.
3488 EOF
3489     exit 1;
3490 fi
3491
3492 die_license_disabled() {
3493     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3494 }
3495
3496 die_license_disabled_gpl() {
3497     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3498 }
3499
3500 die_license_disabled gpl libcdio
3501 die_license_disabled gpl libutvideo
3502 die_license_disabled gpl libx264
3503 die_license_disabled gpl libxavs
3504 die_license_disabled gpl libxvid
3505 die_license_disabled gpl x11grab
3506
3507 die_license_disabled nonfree libaacplus
3508 die_license_disabled nonfree libfaac
3509 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3510 enabled gpl && die_license_disabled_gpl nonfree openssl
3511
3512 die_license_disabled version3 libopencore_amrnb
3513 die_license_disabled version3 libopencore_amrwb
3514 die_license_disabled version3 libvo_aacenc
3515 die_license_disabled version3 libvo_amrwbenc
3516
3517 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3518
3519 disabled optimizations || check_cflags -fomit-frame-pointer
3520
3521 enable_pic() {
3522     enable pic
3523     add_cppflags -DPIC
3524     add_cflags   -fPIC
3525     add_asflags  -fPIC
3526 }
3527
3528 enabled pic && enable_pic
3529
3530 check_cc <<EOF || die "Symbol mangling check failed."
3531 int ff_extern;
3532 EOF
3533 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3534 extern_prefix=${sym%%ff_extern*}
3535
3536 check_cc <<EOF && enable_weak inline_asm
3537 void foo(void) { __asm__ volatile ("" ::); }
3538 EOF
3539
3540 _restrict=
3541 for restrict_keyword in restrict __restrict__ __restrict; do
3542     check_cc <<EOF && _restrict=$restrict_keyword && break
3543 void foo(char * $restrict_keyword p);
3544 EOF
3545 done
3546
3547 check_cc <<EOF && enable attribute_packed
3548 struct { int x; } __attribute__((packed)) x;
3549 EOF
3550
3551 check_cc <<EOF && enable attribute_may_alias
3552 union { int x; } __attribute__((may_alias)) x;
3553 EOF
3554
3555 check_cc <<EOF || die "endian test failed"
3556 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3557 EOF
3558 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3559
3560 if enabled alpha; then
3561
3562     check_cflags -mieee
3563
3564 elif enabled arm; then
3565
3566     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3567 float func(float a, float b){ return a+b; }
3568 EOF
3569
3570     enabled thumb && check_cflags -mthumb || check_cflags -marm
3571     nogas=die
3572
3573     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3574         enable vfp_args
3575     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3576         case "${cross_prefix:-$cc}" in
3577             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3578             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3579 __asm__ (".eabi_attribute 28, 1");
3580 int main(void) { return 0; }
3581 EOF
3582         esac
3583         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3584     fi
3585
3586     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3587     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3588     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3589     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3590     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3591     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3592
3593     [ $target_os = linux ] ||
3594         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3595             $ARCH_EXT_LIST_ARM
3596
3597     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3598     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3599
3600     enabled_all armv6t2 shared !pic && enable_pic
3601
3602 elif enabled mips; then
3603
3604     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3605     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3606      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3607     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3608      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3609     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3610      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3611     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3612      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3613
3614 elif enabled parisc; then
3615
3616     if enabled gcc; then
3617         case $($cc -dumpversion) in
3618             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3619         esac
3620     fi
3621
3622 elif enabled ppc; then
3623
3624     enable local_aligned_8 local_aligned_16
3625
3626     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3627     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3628     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3629     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3630
3631     # AltiVec flags: The FSF version of GCC differs from the Apple version
3632     if enabled altivec; then
3633         nogas=warn
3634         check_cflags -maltivec -mabi=altivec &&
3635         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3636         check_cflags -faltivec
3637
3638         # check if our compiler supports Motorola AltiVec C API
3639         check_cc <<EOF || disable altivec
3640 $inc_altivec_h
3641 int main(void) {
3642     vector signed int v1 = (vector signed int) { 0 };
3643     vector signed int v2 = (vector signed int) { 1 };
3644     v1 = vec_add(v1, v2);
3645     return 0;
3646 }
3647 EOF
3648
3649         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3650     fi
3651
3652 elif enabled sparc; then
3653
3654     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3655
3656 elif enabled x86; then
3657
3658     check_builtin rdtsc    intrin.h   "__rdtsc()"
3659     check_builtin mm_empty mmintrin.h "_mm_empty()"
3660
3661     enable local_aligned_8 local_aligned_16
3662
3663     # check whether EBP is available on x86
3664     # As 'i' is stored on the stack, this program will crash
3665     # if the base pointer is used to access it because the
3666     # base pointer is cleared in the inline assembly code.
3667     check_exec_crash <<EOF && enable ebp_available
3668 volatile int i=0;
3669 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3670 return i;
3671 EOF
3672
3673     # check whether EBX is available on x86
3674     check_inline_asm ebx_available '""::"b"(0)' &&
3675         check_inline_asm ebx_available '"":::"%ebx"'
3676
3677     # check whether xmm clobbers are supported
3678     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3679
3680     # check whether binutils is new enough to compile SSSE3/MMXEXT
3681     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3682     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3683
3684     if ! disabled_any asm mmx yasm; then
3685         if check_cmd $yasmexe --version; then
3686             enabled x86_64 && yasm_extra="-m amd64"
3687             yasm_debug="-g dwarf2"
3688         elif check_cmd nasm -v; then
3689             yasmexe=nasm
3690             yasm_debug="-g -F dwarf"
3691             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3692         fi
3693
3694         YASMFLAGS="-f $objformat $yasm_extra"
3695         enabled pic               && append YASMFLAGS "-DPIC"
3696         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3697         case "$objformat" in
3698             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3699         esac
3700
3701         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3702             die "yasm not found, use --disable-yasm for a crippled build"
3703         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3704         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3705         check_yasm "CPU amdnop" && enable cpunop
3706     fi
3707
3708     case "$cpu" in
3709         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3710             disable fast_clz
3711         ;;
3712     esac
3713
3714 fi
3715
3716 if enabled asm; then
3717     as=${gas:=$as}
3718     check_as <<EOF && enable gnu_as || \
3719         $nogas "GNU assembler not found, install gas-preprocessor"
3720 .macro m n
3721 \n: .int 0
3722 .endm
3723 m x
3724 EOF
3725 fi
3726
3727 check_ldflags -Wl,--as-needed
3728
3729 if check_func dlopen; then
3730     ldl=
3731 elif check_func dlopen -ldl; then
3732     ldl=-ldl
3733 fi
3734
3735 if ! disabled network; then
3736     check_type "sys/types.h sys/socket.h" socklen_t
3737     check_type netdb.h "struct addrinfo"
3738     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3739     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3740     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3741     check_type netinet/in.h "struct sockaddr_in6"
3742     check_type poll.h "struct pollfd"
3743     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3744     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3745     check_type netinet/sctp.h "struct sctp_event_subscribe"
3746     check_func getaddrinfo $network_extralibs
3747     check_func getservbyport $network_extralibs
3748     # Prefer arpa/inet.h over winsock2
3749     if check_header arpa/inet.h ; then
3750         check_func closesocket
3751     elif check_header winsock2.h ; then
3752         check_func_headers winsock2.h closesocket -lws2 &&
3753             network_extralibs="-lws2" ||
3754         { check_func_headers winsock2.h closesocket -lws2_32 &&
3755             network_extralibs="-lws2_32"; }
3756         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3757         check_type ws2tcpip.h socklen_t
3758         check_type ws2tcpip.h "struct addrinfo"
3759         check_type ws2tcpip.h "struct group_source_req"
3760         check_type ws2tcpip.h "struct ip_mreq_source"
3761         check_type ws2tcpip.h "struct ipv6_mreq"
3762         check_type winsock2.h "struct pollfd"
3763         check_type ws2tcpip.h "struct sockaddr_in6"
3764         check_type ws2tcpip.h "struct sockaddr_storage"
3765         check_struct winsock2.h "struct sockaddr" sa_len
3766     else
3767         disable network
3768     fi
3769 fi
3770
3771 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3772 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3773
3774 check_func  access
3775 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3776 check_func  fcntl
3777 check_func  fork
3778 check_func  gethrtime
3779 check_func  getopt
3780 check_func  getrusage
3781 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3782 check_func  gettimeofday
3783 check_func  inet_aton $network_extralibs
3784 check_func  isatty
3785 check_func  localtime_r
3786 check_func  ${malloc_prefix}memalign            && enable memalign
3787 check_func  mkstemp
3788 check_func  mmap
3789 check_func  mprotect
3790 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3791 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3792 check_func  setrlimit
3793 check_func  strerror_r
3794 check_func  sched_getaffinity
3795 check_func  sysconf
3796 check_func  sysctl
3797 check_func  usleep
3798 check_func_headers conio.h kbhit
3799 check_func_headers windows.h PeekNamedPipe
3800 check_func_headers io.h setmode
3801 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3802 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3803 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3804 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3805 check_func_headers windows.h GetProcessAffinityMask
3806 check_func_headers windows.h GetProcessTimes
3807 check_func_headers windows.h GetSystemTimeAsFileTime
3808 check_func_headers windows.h MapViewOfFile
3809 check_func_headers windows.h SetConsoleTextAttribute
3810 check_func_headers windows.h Sleep
3811 check_func_headers windows.h VirtualAlloc
3812 check_func_headers glob.h glob
3813
3814 check_header direct.h
3815 check_header dlfcn.h
3816 check_header dxva.h
3817 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3818 check_header io.h
3819 check_header libcrystalhd/libcrystalhd_if.h
3820 check_header malloc.h
3821 check_header poll.h
3822 check_header sys/mman.h
3823 check_header sys/param.h
3824 check_header sys/resource.h
3825 check_header sys/select.h
3826 check_header sys/time.h
3827 check_header termios.h
3828 check_header unistd.h
3829 check_header vdpau/vdpau.h
3830 check_header vdpau/vdpau_x11.h
3831 check_header VideoDecodeAcceleration/VDADecoder.h
3832 check_header windows.h
3833 check_header X11/extensions/XvMClib.h
3834 check_header asm/types.h
3835
3836 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3837 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3838
3839 if ! disabled w32threads && ! enabled pthreads; then
3840     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3841 fi
3842
3843 # check for some common methods of building with pthread support
3844 # do this before the optional library checks as some of them require pthreads
3845 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3846     enable pthreads
3847     if check_func pthread_create; then
3848         :
3849     elif check_func pthread_create -pthread; then
3850         add_cflags -pthread
3851         add_extralibs -pthread
3852     elif check_func pthread_create -pthreads; then
3853         add_cflags -pthreads
3854         add_extralibs -pthreads
3855     elif check_func pthread_create -lpthreadGC2; then
3856         add_extralibs -lpthreadGC2
3857     elif ! check_lib pthread.h pthread_create -lpthread; then
3858         disable pthreads
3859     fi
3860 fi
3861
3862 for thread in $THREADS_LIST; do
3863     if enabled $thread; then
3864         test -n "$thread_type" &&
3865             die "ERROR: Only one thread type must be selected." ||
3866             thread_type="$thread"
3867     fi
3868 done
3869
3870 if enabled pthreads; then
3871   check_func pthread_cancel
3872 fi
3873
3874 check_lib math.h sin -lm && LIBM="-lm"
3875 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3876 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3877
3878 atan2f_args=2
3879 ldexpf_args=2
3880 powf_args=2
3881
3882 for func in $MATH_FUNCS; do
3883     eval check_mathfunc $func \${${func}_args:-1}
3884 done
3885
3886 # these are off by default, so fail if requested and not available
3887 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3888 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3889 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3890 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3891 enabled iconv      && { check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || die "ERROR: iconv not found"; }
3892 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3893 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3894 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3895 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3896 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3897                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3898                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3899 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3900 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3901 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3902 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"
3903 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3904 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3905 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3906                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3907                         done || die "ERROR: libgsm not found"; }
3908 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3909 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3910 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3911 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3912 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3913 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3914 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3915 enabled libopenjpeg && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
3916                          check_lib openjpeg.h opj_version -lopenjpeg ||
3917                          die "ERROR: libopenjpeg not found"; }
3918 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3919 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3920 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3921 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3922 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3923 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3924 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3925     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3926     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3927 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3928 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3929                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3930                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3931 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3932 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3933 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3934 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3935 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3936 enabled libvpx     && {
3937     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3938                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3939     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 ||
3940                                 die "ERROR: libvpx encoder version must be >=0.9.7"; }
3941     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3942     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3943 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3944                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3945                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3946 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3947 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3948 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3949                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3950                         die "ERROR: openal not found"; } &&
3951                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3952                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3953 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3954                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3955                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3956                         die "ERROR: openssl not found"; }
3957
3958 if enabled gnutls; then
3959     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3960     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3961 fi
3962
3963 # libdc1394 check
3964 if enabled libdc1394; then
3965     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3966         enable libdc1394_2; } ||
3967     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3968         enable libdc1394_1; } ||
3969     die "ERROR: No version of libdc1394 found "
3970 fi
3971
3972 SDL_CONFIG="${cross_prefix}sdl-config"
3973 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3974     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3975     enable sdl &&
3976     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3977 else
3978   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3979     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3980     sdl_libs=$("${SDL_CONFIG}" --libs)
3981     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3982     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3983     enable sdl &&
3984     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3985   fi
3986 fi
3987 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3988
3989 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3990 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3991 perl --version > /dev/null 2>&1 && enable perl || disable perl
3992 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3993 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
3994
3995 check_header linux/fb.h
3996 check_header linux/videodev.h
3997 check_header linux/videodev2.h
3998 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
3999
4000 check_header sys/videoio.h
4001
4002 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4003 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4004 # w32api 3.12 had it defined wrong
4005 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4006
4007 check_type "dshow.h" IBaseFilter
4008
4009 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4010 { check_header dev/bktr/ioctl_meteor.h &&
4011   check_header dev/bktr/ioctl_bt848.h; } ||
4012 { check_header machine/ioctl_meteor.h &&
4013   check_header machine/ioctl_bt848.h; } ||
4014 { check_header dev/video/meteor/ioctl_meteor.h &&
4015   check_header dev/video/bktr/ioctl_bt848.h; } ||
4016 check_header dev/ic/bt8xx.h
4017
4018 check_header sndio.h
4019 if check_struct sys/soundcard.h audio_buf_info bytes; then
4020     enable_safe sys/soundcard.h
4021 else
4022     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4023     #include <sys/soundcard.h>
4024     audio_buf_info abc;
4025 EOF
4026 fi
4027 check_header soundcard.h
4028
4029 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4030
4031 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4032     check_func jack_port_get_latency_range -ljack
4033
4034 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4035
4036 if enabled libcdio; then
4037     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4038 fi
4039
4040 enabled x11grab                                           &&
4041 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4042 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4043 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4044
4045 if ! disabled vaapi; then
4046     check_lib va/va.h vaInitialize -lva && {
4047         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
4048         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
4049     } || disable vaapi
4050 fi
4051
4052 enabled vdpau &&
4053     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4054     disable vdpau
4055
4056 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4057 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
4058 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"
4059
4060 # add some useful compiler flags if supported
4061 check_cflags -Wdeclaration-after-statement
4062 check_cflags -Wall
4063 check_cflags -Wno-parentheses
4064 check_cflags -Wno-switch
4065 check_cflags -Wno-format-zero-length
4066 check_cflags -Wdisabled-optimization
4067 check_cflags -Wpointer-arith
4068 check_cflags -Wredundant-decls
4069 check_cflags -Wno-pointer-sign
4070 check_cflags -Wwrite-strings
4071 check_cflags -Wtype-limits
4072 check_cflags -Wundef
4073 check_cflags -Wmissing-prototypes
4074 check_cflags -Wno-pointer-to-int-cast
4075 check_cflags -Wstrict-prototypes
4076 enabled extra_warnings && check_cflags -Winline
4077
4078 # add some linker flags
4079 check_ldflags -Wl,--warn-common
4080 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4081 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4082
4083 enabled xmm_clobber_test &&
4084     check_ldflags -Wl,--wrap,avcodec_open2              \
4085                   -Wl,--wrap,avcodec_decode_audio4      \
4086                   -Wl,--wrap,avcodec_decode_video2      \
4087                   -Wl,--wrap,avcodec_decode_subtitle2   \
4088                   -Wl,--wrap,avcodec_encode_audio2      \
4089                   -Wl,--wrap,avcodec_encode_video       \
4090                   -Wl,--wrap,avcodec_encode_subtitle    \
4091                   -Wl,--wrap,sws_scale ||
4092     disable xmm_clobber_test
4093
4094 echo "X{};" > $TMPV
4095 if test_ldflags -Wl,--version-script,$TMPV; then
4096     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4097     check_cc <<EOF && enable symver_asm_label
4098 void ff_foo(void) __asm__ ("av_foo@VERSION");
4099 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4100 EOF
4101     check_cc <<EOF && enable symver_gnu_asm
4102 __asm__(".symver ff_foo,av_foo@VERSION");
4103 void ff_foo(void) {}
4104 EOF
4105 fi
4106
4107 if [ -z "$optflags" ]; then
4108     if enabled small; then
4109         optflags=$cflags_size
4110     elif enabled optimizations; then
4111         optflags=$cflags_speed
4112     else
4113         optflags=$cflags_noopt
4114     fi
4115 fi
4116
4117 check_optflags(){
4118     check_cflags "$@"
4119     enabled lto && check_ldflags "$@"
4120 }
4121
4122
4123 if enabled lto; then
4124     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4125     check_cflags  -flto
4126     check_ldflags -flto $cpuflags
4127 fi
4128
4129 check_optflags $optflags
4130 check_optflags -fno-math-errno
4131 check_optflags -fno-signed-zeros
4132
4133 enabled ftrapv && check_cflags -ftrapv
4134
4135 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4136 int x;
4137 EOF
4138
4139
4140 if enabled icc; then
4141     # Just warnings, no remarks
4142     check_cflags -w1
4143     # -wd: Disable following warnings
4144     # 144, 167, 556: -Wno-pointer-sign
4145     # 188: enumerated type mixed with another type
4146     # 1292: attribute "foo" ignored
4147     # 1419: external declaration in primary source file
4148     # 10006: ignoring unknown option -fno-signed-zeros
4149     # 10148: ignoring unknown option -Wno-parentheses
4150     # 10156: ignoring option '-W'; no argument required
4151     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4152     # 11030: Warning unknown option --as-needed
4153     # 10156: ignoring option '-export'; no argument required
4154     check_ldflags -wd10156,11030
4155     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4156     enable ebp_available
4157     if enabled x86_32; then
4158         icc_version=$($cc -dumpversion)
4159         test ${icc_version%%.*} -ge 11 &&
4160             check_cflags -falign-stack=maintain-16-byte ||
4161             disable aligned_stack
4162     fi
4163 elif enabled ccc; then
4164     # disable some annoying warnings
4165     add_cflags -msg_disable bitnotint
4166     add_cflags -msg_disable mixfuncvoid
4167     add_cflags -msg_disable nonstandcast
4168     add_cflags -msg_disable unsupieee
4169 elif enabled gcc; then
4170     check_optflags -fno-tree-vectorize
4171     check_cflags -Werror=implicit-function-declaration
4172     check_cflags -Werror=missing-prototypes
4173     check_cflags -Werror=return-type
4174     check_cflags -Werror=vla
4175 elif enabled llvm_gcc; then
4176     check_cflags -mllvm -stack-alignment=16
4177 elif enabled clang; then
4178     check_cflags -mllvm -stack-alignment=16
4179     check_cflags -Qunused-arguments
4180     check_cflags -Werror=implicit-function-declaration
4181     check_cflags -Werror=missing-prototypes
4182     check_cflags -Werror=return-type
4183 elif enabled armcc; then
4184     # 2523: use of inline assembler is deprecated
4185     add_cflags -W${armcc_opt},--diag_suppress=2523
4186     add_cflags -W${armcc_opt},--diag_suppress=1207
4187     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4188     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4189     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4190     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4191 elif enabled tms470; then
4192     add_cflags -pds=824 -pds=837
4193 elif enabled pathscale; then
4194     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4195 elif enabled msvc; then
4196     enabled x86_32 && disable aligned_stack
4197 fi
4198
4199 case $target_os in
4200     osf1)
4201         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4202     ;;
4203     plan9)
4204         add_cppflags -Dmain=plan9_main
4205     ;;
4206 esac
4207
4208 enabled_any $THREADS_LIST      && enable threads
4209
4210 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4211
4212 check_deps $CONFIG_LIST       \
4213            $CONFIG_EXTRA      \
4214            $HAVE_LIST         \
4215            $ALL_COMPONENTS    \
4216
4217
4218 if test $target_os = "haiku"; then
4219     disable memalign
4220     disable posix_memalign
4221 fi
4222
4223 ! enabled_any memalign posix_memalign aligned_malloc &&
4224     enabled_any $need_memalign && enable memalign_hack
4225
4226 # add_dep lib dep
4227 # -> enable ${lib}_deps_${dep}
4228 # -> add $dep to ${lib}_deps only once
4229 add_dep() {
4230     lib=$1
4231     dep=$2
4232     enabled "${lib}_deps_${dep}" && return 0
4233     enable  "${lib}_deps_${dep}"
4234     prepend "${lib}_deps" $dep
4235 }
4236
4237 # merge deps lib components
4238 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4239 merge_deps() {
4240     lib=$1
4241     shift
4242     for comp in $*; do
4243         enabled $comp || continue
4244         eval "dep=\"\$${comp}_deps\""
4245         for d in $dep; do
4246             add_dep $lib $d
4247         done
4248     done
4249 }
4250
4251 merge_deps libavfilter $FILTER_LIST
4252
4253 echo "install prefix            $prefix"
4254 echo "source path               $source_path"
4255 echo "C compiler                $cc"
4256 echo "ARCH                      $arch ($cpu)"
4257 if test "$build_suffix" != ""; then
4258     echo "build suffix              $build_suffix"
4259 fi
4260 if test "$progs_suffix" != ""; then
4261     echo "progs suffix              $progs_suffix"
4262 fi
4263 if test "$extra_version" != ""; then
4264     echo "version string suffix     $extra_version"
4265 fi
4266 echo "big-endian                ${bigendian-no}"
4267 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4268 if enabled x86; then
4269     echo "${yasmexe}                      ${yasm-no}"
4270     echo "MMX enabled               ${mmx-no}"
4271     echo "MMXEXT enabled            ${mmxext-no}"
4272     echo "3DNow! enabled            ${amd3dnow-no}"
4273     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4274     echo "SSE enabled               ${sse-no}"
4275     echo "SSSE3 enabled             ${ssse3-no}"
4276     echo "AVX enabled               ${avx-no}"
4277     echo "FMA4 enabled              ${fma4-no}"
4278     echo "CMOV enabled              ${cmov-no}"
4279     echo "CMOV is fast              ${fast_cmov-no}"
4280     echo "EBX available             ${ebx_available-no}"
4281     echo "EBP available             ${ebp_available-no}"
4282 fi
4283 if enabled arm; then
4284     echo "ARMv5TE enabled           ${armv5te-no}"
4285     echo "ARMv6 enabled             ${armv6-no}"
4286     echo "ARMv6T2 enabled           ${armv6t2-no}"
4287     echo "VFP enabled               ${vfp-no}"
4288     echo "NEON enabled              ${neon-no}"
4289     echo "THUMB enabled             ${thumb-no}"
4290 fi
4291 if enabled mips; then
4292     echo "MIPS FPU enabled          ${mipsfpu-no}"
4293     echo "MIPS32R2 enabled          ${mips32r2-no}"
4294     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4295     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4296 fi
4297 if enabled ppc; then
4298     echo "AltiVec enabled           ${altivec-no}"
4299     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4300     echo "dcbzl available           ${dcbzl-no}"
4301 fi
4302 if enabled sparc; then
4303     echo "VIS enabled               ${vis-no}"
4304 fi
4305 echo "debug symbols             ${debug-no}"
4306 echo "strip symbols             ${stripping-no}"
4307 echo "optimize for size         ${small-no}"
4308 echo "optimizations             ${optimizations-no}"
4309 echo "static                    ${static-no}"
4310 echo "shared                    ${shared-no}"
4311 echo "postprocessing support    ${postproc-no}"
4312 echo "new filter support        ${avfilter-no}"
4313 echo "network support           ${network-no}"
4314 echo "threading support         ${thread_type-no}"
4315 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4316 echo "SDL support               ${sdl-no}"
4317 echo "texi2html enabled         ${texi2html-no}"
4318 echo "perl enabled              ${perl-no}"
4319 echo "pod2man enabled           ${pod2man-no}"
4320 echo "makeinfo enabled          ${makeinfo-no}"
4321 test -n "$random_seed" &&
4322     echo "random seed               ${random_seed}"
4323 echo
4324
4325 echo "External libraries:"
4326 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4327 echo
4328
4329 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4330     echo "Enabled ${type}s:"
4331     eval list=\$$(toupper $type)_LIST
4332     print_enabled '_*' $list | print_3_columns
4333     echo
4334 done
4335
4336 license="LGPL version 2.1 or later"
4337 if enabled nonfree; then
4338     license="nonfree and unredistributable"
4339 elif enabled gplv3; then
4340     license="GPL version 3 or later"
4341 elif enabled lgplv3; then
4342     license="LGPL version 3 or later"
4343 elif enabled gpl; then
4344     license="GPL version 2 or later"
4345 fi
4346
4347 echo "License: $license"
4348
4349 echo "Creating config.mak and config.h..."
4350
4351 test -e Makefile || $ln_s "$source_path/Makefile" .
4352
4353 enabled stripping || strip="echo skipping strip"
4354
4355 config_files="$TMPH config.mak"
4356
4357 cat > config.mak <<EOF
4358 # Automatically generated by configure - do not modify!
4359 ifndef FFMPEG_CONFIG_MAK
4360 FFMPEG_CONFIG_MAK=1
4361 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4362 prefix=$prefix
4363 LIBDIR=\$(DESTDIR)$libdir
4364 SHLIBDIR=\$(DESTDIR)$shlibdir
4365 INCDIR=\$(DESTDIR)$incdir
4366 BINDIR=\$(DESTDIR)$bindir
4367 DATADIR=\$(DESTDIR)$datadir
4368 MANDIR=\$(DESTDIR)$mandir
4369 SRC_PATH=$source_path
4370 ifndef MAIN_MAKEFILE
4371 SRC_PATH:=\$(SRC_PATH:.%=..%)
4372 endif
4373 CC_IDENT=$cc_ident
4374 ARCH=$arch
4375 CC=$cc
4376 CXX=$cxx
4377 AS=$as
4378 LD=$ld
4379 DEPCC=$dep_cc
4380 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4381 DEPAS=$as
4382 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4383 YASM=$yasmexe
4384 DEPYASM=$yasmexe
4385 AR=$ar
4386 ARFLAGS=$arflags
4387 AR_O=$ar_o
4388 RANLIB=$ranlib
4389 CP=cp -p
4390 LN_S=$ln_s
4391 STRIP=$strip
4392 CPPFLAGS=$CPPFLAGS
4393 CFLAGS=$CFLAGS
4394 CXXFLAGS=$CXXFLAGS
4395 ASFLAGS=$ASFLAGS
4396 AS_C=$AS_C
4397 AS_O=$AS_O
4398 CC_C=$CC_C
4399 CC_E=$CC_E
4400 CC_O=$CC_O
4401 CXX_C=$CXX_C
4402 CXX_O=$CXX_O
4403 LD_O=$LD_O
4404 LD_LIB=$LD_LIB
4405 LD_PATH=$LD_PATH
4406 DLLTOOL=$dlltool
4407 LDFLAGS=$LDFLAGS
4408 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4409 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4410 YASMFLAGS=$YASMFLAGS
4411 BUILDSUF=$build_suffix
4412 PROGSSUF=$progs_suffix
4413 FULLNAME=$FULLNAME
4414 LIBPREF=$LIBPREF
4415 LIBSUF=$LIBSUF
4416 LIBNAME=$LIBNAME
4417 SLIBPREF=$SLIBPREF
4418 SLIBSUF=$SLIBSUF
4419 EXESUF=$EXESUF
4420 EXTRA_VERSION=$extra_version
4421 CCDEP=$CCDEP
4422 CXXDEP=$CXXDEP
4423 CCDEP_FLAGS=$CCDEP_FLAGS
4424 ASDEP=$ASDEP
4425 ASDEP_FLAGS=$ASDEP_FLAGS
4426 CC_DEPFLAGS=$CC_DEPFLAGS
4427 AS_DEPFLAGS=$AS_DEPFLAGS
4428 HOSTCC=$host_cc
4429 HOSTLD=$host_ld
4430 HOSTCFLAGS=$host_cflags
4431 HOSTCPPFLAGS=$host_cppflags
4432 HOSTEXESUF=$HOSTEXESUF
4433 HOSTLDFLAGS=$host_ldflags
4434 HOSTLIBS=$host_libs
4435 DEPHOSTCC=$host_cc
4436 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4437 HOSTCCDEP=$HOSTCCDEP
4438 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4439 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4440 HOSTCC_C=$HOSTCC_C
4441 HOSTCC_O=$HOSTCC_O
4442 HOSTLD_O=$HOSTLD_O
4443 TARGET_EXEC=$target_exec
4444 TARGET_PATH=$target_path
4445 LIBS-ffplay=$sdl_libs
4446 CFLAGS-ffplay=$sdl_cflags
4447 ZLIB=$($ldflags_filter -lz)
4448 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4449 EXTRALIBS=$extralibs
4450 COMPAT_OBJS=$compat_objs
4451 EXEOBJS=$exeobjs
4452 INSTALL=$install
4453 LIBTARGET=${LIBTARGET}
4454 SLIBNAME=${SLIBNAME}
4455 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4456 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4457 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4458 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4459 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4460 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4461 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4462 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4463 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4464 NOREDZONE_FLAGS=$noredzone_flags
4465 EOF
4466
4467 get_version(){
4468     lcname=lib${1}
4469     name=$(toupper $lcname)
4470     file=$source_path/$lcname/version.h
4471     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4472     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4473     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4474     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4475     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4476 }
4477
4478 map 'get_version $v' $LIBRARY_LIST
4479
4480 cat > $TMPH <<EOF
4481 /* Automatically generated by configure - do not modify! */
4482 #ifndef FFMPEG_CONFIG_H
4483 #define FFMPEG_CONFIG_H
4484 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4485 #define FFMPEG_LICENSE "$(c_escape $license)"
4486 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4487 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4488 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4489 #define av_restrict $_restrict
4490 #define EXTERN_PREFIX "${extern_prefix}"
4491 #define EXTERN_ASM ${extern_prefix}
4492 #define SLIBSUF "$SLIBSUF"
4493 #define HAVE_MMX2 HAVE_MMXEXT
4494 EOF
4495
4496 test -n "$assert_level" &&
4497     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4498
4499 test -n "$malloc_prefix" &&
4500     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4501
4502 if enabled yasm; then
4503     append config_files $TMPASM
4504     printf '' >$TMPASM
4505 fi
4506
4507 print_config ARCH_   "$config_files" $ARCH_LIST
4508 print_config HAVE_   "$config_files" $HAVE_LIST
4509 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4510                                      $CONFIG_EXTRA      \
4511                                      $ALL_COMPONENTS    \
4512
4513 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4514 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4515
4516 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4517 cp_if_changed $TMPH config.h
4518 touch .config
4519
4520 enabled yasm && cp_if_changed $TMPASM config.asm
4521
4522 cat > $TMPH <<EOF
4523 /* Generated by ffconf */
4524 #ifndef AVUTIL_AVCONFIG_H
4525 #define AVUTIL_AVCONFIG_H
4526 EOF
4527
4528 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4529
4530 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4531
4532 cp_if_changed $TMPH libavutil/avconfig.h
4533
4534 if test -n "$WARNINGS"; then
4535     printf "\n$WARNINGS"
4536     enabled fatal_warnings && exit 1
4537 fi
4538
4539 # build pkg-config files
4540
4541 pkgconfig_generate(){
4542     name=$1
4543     shortname=${name#lib}${build_suffix}
4544     comment=$2
4545     version=$3
4546     libs=$4
4547     requires=$5
4548     enabled ${name#lib} || return 0
4549     mkdir -p $name
4550     cat <<EOF > $name/$name${build_suffix}.pc
4551 prefix=$prefix
4552 exec_prefix=\${prefix}
4553 libdir=$libdir
4554 includedir=$incdir
4555
4556 Name: $name
4557 Description: $comment
4558 Version: $version
4559 Requires: $(enabled shared || echo $requires)
4560 Requires.private: $(enabled shared && echo $requires)
4561 Conflicts:
4562 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4563 Libs.private: $(enabled shared && echo $libs)
4564 Cflags: -I\${includedir}
4565 EOF
4566
4567 mkdir -p doc/examples/pc-uninstalled
4568 includedir=${source_path}
4569 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4570     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4571 prefix=
4572 exec_prefix=
4573 libdir=\${pcfiledir}/../../../$name
4574 includedir=${includedir}
4575
4576 Name: $name
4577 Description: $comment
4578 Version: $version
4579 Requires: $requires
4580 Conflicts:
4581 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4582 Cflags: -I\${includedir}
4583 EOF
4584 }
4585
4586 libavfilter_pc_deps="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4587 enabled libavfilter_deps_avcodec    && prepend libavfilter_pc_deps "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
4588 enabled libavfilter_deps_avformat   && prepend libavfilter_pc_deps "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
4589 enabled libavfilter_deps_avresample && prepend libavfilter_pc_deps "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
4590 enabled libavfilter_deps_swscale    && prepend libavfilter_pc_deps "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
4591 enabled libavfilter_deps_swresample && prepend libavfilter_pc_deps "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
4592 enabled libavfilter_deps_postproc   && prepend libavfilter_pc_deps "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
4593 libavfilter_pc_deps=${libavfilter_pc_deps%, }
4594
4595 libavdevice_pc_deps="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
4596 enabled lavfi_indev && prepend libavdevice_pc_deps "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
4597
4598 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4599 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4600 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
4601 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$libavdevice_pc_deps"
4602 pkgconfig_generate libavfilter "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$libavfilter_pc_deps"
4603 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4604 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4605 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4606 pkgconfig_generate libswresample "FFmpeg audio resampling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4607
4608 fix_ffmpeg_remote(){
4609     git_remote_from=$1
4610     git_remote_to=$2
4611     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4612     if [ "$fixme_remote" != "" ]; then
4613         echolog "
4614 Outdated domain in git config, the official domain for ffmpeg git is since
4615 November 2011, source.ffmpeg.org, both the old and the new point to the same
4616 repository and server. To update it enter the following commands:
4617 "
4618         for remote in $fixme_remote; do
4619             echolog "git remote set-url $remote $git_remote_to"
4620         done
4621     fi
4622 }
4623
4624 if test -f "$source_path/.git/config"; then
4625     remote_from=git.videolan.org
4626     remote_to=source.ffmpeg.org
4627     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4628     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4629 fi