configure

   1 #!/bin/sh
   2 #
   3 # Libav 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 LIBAV, 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 Libav."
  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 show_help(){
  58 cat <<EOF
  59 Usage: configure [options]
  60 Options: [defaults in brackets after descriptions]
  61
  62 Standard options:
  63   --help                   print this message
  64   --logfile=FILE           log tests and output to FILE [config.log]
  65   --disable-logging        do not log configure debug information
  66   --prefix=PREFIX          install in PREFIX [$prefix]
  67   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  68   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  69   --libdir=DIR             install libs in DIR [PREFIX/lib]
  70   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  71   --incdir=DIR             install includes in DIR [PREFIX/include]
  72   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  73
  74 Configuration options:
  75   --disable-static         do not build static libraries [no]
  76   --enable-shared          build shared libraries [no]
  77   --enable-gpl             allow use of GPL code, the resulting libs
  78                            and binaries will be under GPL [no]
  79   --enable-version3        upgrade (L)GPL to version 3 [no]
  80   --enable-nonfree         allow use of nonfree code, the resulting libs
  81                            and binaries will be unredistributable [no]
  82   --disable-doc            do not build documentation
  83   --disable-ffmpeg         disable ffmpeg build
  84   --disable-ffplay         disable ffplay build
  85   --disable-ffprobe        disable ffprobe build
  86   --disable-ffserver       disable ffserver build
  87   --disable-avdevice       disable libavdevice build
  88   --disable-avcodec        disable libavcodec build
  89   --disable-avformat       disable libavformat build
  90   --disable-swscale        disable libswscale build
  91   --disable-postproc       disable libpostproc build
  92   --disable-avfilter       disable video filter support [no]
  93   --disable-pthreads       disable pthreads [auto]
  94   --enable-w32threads      use Win32 threads [no]
  95   --enable-x11grab         enable X11 grabbing [no]
  96   --disable-network        disable network support [no]
  97   --enable-gray            enable full grayscale support (slower color)
  98   --disable-swscale-alpha  disable alpha channel support in swscale
  99   --disable-fastdiv        disable table-based division
 100   --enable-small           optimize for size instead of speed
 101   --disable-aandct         disable AAN DCT code
 102   --disable-dct            disable DCT code
 103   --disable-fft            disable FFT code
 104   --disable-golomb         disable Golomb code
 105   --disable-huffman        disable Huffman code
 106   --disable-lpc            disable LPC code
 107   --disable-mdct           disable MDCT code
 108   --disable-rdft           disable RDFT code
 109   --enable-vaapi           enable VAAPI code
 110   --enable-vdpau           enable VDPAU code
 111   --disable-dxva2          disable DXVA2 code
 112   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 113   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 114   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 115   --disable-everything     disable all components listed below
 116   --disable-encoder=NAME   disable encoder NAME
 117   --enable-encoder=NAME    enable encoder NAME
 118   --disable-encoders       disable all encoders
 119   --disable-decoder=NAME   disable decoder NAME
 120   --enable-decoder=NAME    enable decoder NAME
 121   --disable-decoders       disable all decoders
 122   --disable-hwaccel=NAME   disable hwaccel NAME
 123   --enable-hwaccel=NAME    enable hwaccel NAME
 124   --disable-hwaccels       disable all hwaccels
 125   --disable-muxer=NAME     disable muxer NAME
 126   --enable-muxer=NAME      enable muxer NAME
 127   --disable-muxers         disable all muxers
 128   --disable-demuxer=NAME   disable demuxer NAME
 129   --enable-demuxer=NAME    enable demuxer NAME
 130   --disable-demuxers       disable all demuxers
 131   --enable-parser=NAME     enable parser NAME
 132   --disable-parser=NAME    disable parser NAME
 133   --disable-parsers        disable all parsers
 134   --enable-bsf=NAME        enable bitstream filter NAME
 135   --disable-bsf=NAME       disable bitstream filter NAME
 136   --disable-bsfs           disable all bitstream filters
 137   --enable-protocol=NAME   enable protocol NAME
 138   --disable-protocol=NAME  disable protocol NAME
 139   --disable-protocols      disable all protocols
 140   --disable-indev=NAME     disable input device NAME
 141   --disable-outdev=NAME    disable output device NAME
 142   --disable-indevs         disable input devices
 143   --disable-outdevs        disable output devices
 144   --disable-devices        disable all devices
 145   --enable-filter=NAME     enable filter NAME
 146   --disable-filter=NAME    disable filter NAME
 147   --disable-filters        disable all filters
 148   --list-decoders          show all available decoders
 149   --list-encoders          show all available encoders
 150   --list-hwaccels          show all available hardware accelerators
 151   --list-muxers            show all available muxers
 152   --list-demuxers          show all available demuxers
 153   --list-parsers           show all available parsers
 154   --list-protocols         show all available protocols
 155   --list-bsfs              show all available bitstream filters
 156   --list-indevs            show all available input devices
 157   --list-outdevs           show all available output devices
 158   --list-filters           show all available filters
 159
 160 External library support:
 161   --enable-avisynth        enable reading of AVISynth script files [no]
 162   --enable-bzlib           enable bzlib [autodetect]
 163   --enable-frei0r          enable frei0r video filtering
 164   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 165   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 166   --enable-libopencv       enable video filtering via libopencv [no]
 167   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 168                            and libraw1394 [no]
 169   --enable-libdirac        enable Dirac support via libdirac [no]
 170   --enable-libfaac         enable FAAC support via libfaac [no]
 171   --enable-libfreetype     enable libfreetype [no]
 172   --enable-libgsm          enable GSM support via libgsm [no]
 173   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 174   --enable-libnut          enable NUT (de)muxing via libnut,
 175                            native (de)muxer exists [no]
 176   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
 177   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 178   --enable-libschroedinger enable Dirac support via libschroedinger [no]
 179   --enable-libspeex        enable Speex decoding via libspeex [no]
 180   --enable-libtheora       enable Theora encoding via libtheora [no]
 181   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 182   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 183   --enable-libvorbis       enable Vorbis encoding via libvorbis,
 184                            native implementation exists [no]
 185   --enable-libvpx          enable VP8 support via libvpx [no]
 186   --enable-libx264         enable H.264 encoding via x264 [no]
 187   --enable-libxavs         enable AVS encoding via xavs [no]
 188   --enable-libxvid         enable Xvid encoding via xvidcore,
 189                            native MPEG-4/Xvid encoder exists [no]
 190   --enable-mlib            enable Sun medialib [no]
 191   --enable-zlib            enable zlib [autodetect]
 192
 193 Advanced options (experts only):
 194   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 195   --enable-cross-compile   assume a cross-compiler is used
 196   --sysroot=PATH           root of cross-build tree
 197   --sysinclude=PATH        location of cross-build system headers
 198   --target-os=OS           compiler targets OS [$target_os]
 199   --target-exec=CMD        command to run executables on target
 200   --target-path=DIR        path to view of build directory on target
 201   --nm=NM                  use nm tool
 202   --ar=AR                  use archive tool AR [$ar_default]
 203   --as=AS                  use assembler AS [$as_default]
 204   --cc=CC                  use C compiler CC [$cc_default]
 205   --ld=LD                  use linker LD
 206   --host-cc=HOSTCC         use host C compiler HOSTCC
 207   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 208   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 209   --host-libs=HLIBS        use libs HLIBS when linking for host
 210   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 211   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 212   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 213   --extra-version=STRING   version string suffix []
 214   --build-suffix=SUFFIX    library name suffix []
 215   --arch=ARCH              select architecture [$arch]
 216   --cpu=CPU                select the minimum required CPU (affects
 217                            instruction selection, may crash on older CPUs)
 218   --disable-asm            disable all assembler optimizations
 219   --disable-altivec        disable AltiVec optimizations
 220   --disable-amd3dnow       disable 3DNow! optimizations
 221   --disable-amd3dnowext    disable 3DNow! extended optimizations
 222   --disable-mmx            disable MMX optimizations
 223   --disable-mmx2           disable MMX2 optimizations
 224   --disable-sse            disable SSE optimizations
 225   --disable-ssse3          disable SSSE3 optimizations
 226   --disable-avx            disable AVX optimizations
 227   --disable-armv5te        disable armv5te optimizations
 228   --disable-armv6          disable armv6 optimizations
 229   --disable-armv6t2        disable armv6t2 optimizations
 230   --disable-armvfp         disable ARM VFP optimizations
 231   --disable-iwmmxt         disable iwmmxt optimizations
 232   --disable-mmi            disable MMI optimizations
 233   --disable-neon           disable neon optimizations
 234   --disable-vis            disable VIS optimizations
 235   --disable-yasm           disable use of yasm assembler
 236   --enable-pic             build position-independent code
 237   --malloc-prefix=PFX      prefix malloc and related names with PFX
 238   --enable-sram            allow use of on-chip SRAM
 239   --disable-symver         disable symbol versioning
 240
 241 Developer options (useful when working on Libav itself):
 242   --disable-debug          disable debugging symbols
 243   --enable-debug=LEVEL     set the debug level [$debuglevel]
 244   --disable-optimizations  disable compiler optimizations
 245   --enable-extra-warnings  enable more compiler warnings
 246   --samples=PATH           location of test samples for FATE, if not set use
 247                            \$FATE_SAMPLES at make invocation time.
 248
 249 NOTE: Object files are built at the place where configure is launched.
 250 EOF
 251   exit 0
 252 }
 253
 254 quotes='""'
 255
 256 log(){
 257     echo "$@" >> $logfile
 258 }
 259
 260 log_file(){
 261     log BEGIN $1
 262     pr -n -t $1 >> $logfile
 263     log END $1
 264 }
 265
 266 echolog(){
 267     log "$@"
 268     echo "$@"
 269 }
 270
 271 warn(){
 272     log "WARNING: $*"
 273     WARNINGS="${WARNINGS}WARNING: $*\n"
 274 }
 275
 276 die(){
 277     echolog "$@"
 278     cat <<EOF
 279
 280 If you think configure made a mistake, make sure you are using the latest
 281 version from Git.  If the latest version fails, report the problem to the
 282 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
 283 EOF
 284     if disabled logging; then
 285         cat <<EOF
 286 Rerun configure with logging enabled (do not use --disable-logging), and
 287 include the log this produces with your report.
 288 EOF
 289     else
 290 cat <<EOF
 291 Include the log file "$logfile" produced by configure as this will help
 292 solving the problem.
 293 EOF
 294     fi
 295     exit 1
 296 }
 297
 298 # Avoid locale weirdness, besides we really just want to translate ASCII.
 299 toupper(){
 300     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 301 }
 302
 303 tolower(){
 304     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 305 }
 306
 307 c_escape(){
 308     echo "$*" | sed 's/["\\]/\\\0/g'
 309 }
 310
 311 sh_quote(){
 312     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 313     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 314     echo "$v"
 315 }
 316
 317 cleanws(){
 318     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 319 }
 320
 321 filter(){
 322     pat=$1
 323     shift
 324     for v; do
 325         eval "case $v in $pat) echo $v ;; esac"
 326     done
 327 }
 328
 329 filter_out(){
 330     pat=$1
 331     shift
 332     for v; do
 333         eval "case $v in $pat) ;; *) echo $v ;; esac"
 334     done
 335 }
 336
 337 map(){
 338     m=$1
 339     shift
 340     for v; do eval $m; done
 341 }
 342
 343 set_all(){
 344     value=$1
 345     shift
 346     for var in $*; do
 347         eval $var=$value
 348     done
 349 }
 350
 351 set_weak(){
 352     value=$1
 353     shift
 354     for var; do
 355         eval : \${$var:=$value}
 356     done
 357 }
 358
 359 set_safe(){
 360     var=$1
 361     shift
 362     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 363 }
 364
 365 get_safe(){
 366     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 367 }
 368
 369 pushvar(){
 370     for var in $*; do
 371         eval level=\${${var}_level:=0}
 372         eval ${var}_${level}="\$$var"
 373         eval ${var}_level=$(($level+1))
 374     done
 375 }
 376
 377 popvar(){
 378     for var in $*; do
 379         eval level=\${${var}_level:-0}
 380         test $level = 0 && continue
 381         eval level=$(($level-1))
 382         eval $var="\${${var}_${level}}"
 383         eval ${var}_level=$level
 384         eval unset ${var}_${level}
 385     done
 386 }
 387
 388 enable(){
 389     set_all yes $*
 390 }
 391
 392 disable(){
 393     set_all no $*
 394 }
 395
 396 enable_weak(){
 397     set_weak yes $*
 398 }
 399
 400 disable_weak(){
 401     set_weak no $*
 402 }
 403
 404 enable_safe(){
 405     for var; do
 406         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 407     done
 408 }
 409
 410 disable_safe(){
 411     for var; do
 412         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 413     done
 414 }
 415
 416 do_enable_deep(){
 417     for var; do
 418         enabled $var && continue
 419         eval sel="\$${var}_select"
 420         eval sgs="\$${var}_suggest"
 421         pushvar var sgs
 422         enable_deep $sel
 423         popvar sgs
 424         enable_deep_weak $sgs
 425         popvar var
 426     done
 427 }
 428
 429 enable_deep(){
 430     do_enable_deep $*
 431     enable $*
 432 }
 433
 434 enable_deep_weak(){
 435     do_enable_deep $*
 436     enable_weak $*
 437 }
 438
 439 enabled(){
 440     test "${1#!}" = "$1" && op== || op=!=
 441     eval test "x\$${1#!}" $op "xyes"
 442 }
 443
 444 disabled(){
 445     test "${1#!}" = "$1" && op== || op=!=
 446     eval test "x\$${1#!}" $op "xno"
 447 }
 448
 449 enabled_all(){
 450     for opt; do
 451         enabled $opt || return 1
 452     done
 453 }
 454
 455 disabled_all(){
 456     for opt; do
 457         disabled $opt || return 1
 458     done
 459 }
 460
 461 enabled_any(){
 462     for opt; do
 463         enabled $opt && return 0
 464     done
 465 }
 466
 467 disabled_any(){
 468     for opt; do
 469         disabled $opt && return 0
 470     done
 471     return 1
 472 }
 473
 474 set_default(){
 475     for opt; do
 476         eval : \${$opt:=\$${opt}_default}
 477     done
 478 }
 479
 480 is_in(){
 481     value=$1
 482     shift
 483     for var in $*; do
 484         [ $var = $value ] && return 0
 485     done
 486     return 1
 487 }
 488
 489 check_deps(){
 490     for cfg; do
 491         cfg="${cfg#!}"
 492         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 493         disabled ${cfg}_checking && continue
 494         enable ${cfg}_checking
 495
 496         eval dep_all="\$${cfg}_deps"
 497         eval dep_any="\$${cfg}_deps_any"
 498         eval dep_sel="\$${cfg}_select"
 499         eval dep_sgs="\$${cfg}_suggest"
 500         eval dep_ifa="\$${cfg}_if"
 501         eval dep_ifn="\$${cfg}_if_any"
 502
 503         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 504         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 505         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 506
 507         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 508         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 509         enabled_all  $dep_all || disable $cfg
 510         enabled_any  $dep_any || disable $cfg
 511         disabled_any $dep_sel && disable $cfg
 512
 513         if enabled $cfg; then
 514             eval dep_extralibs="\$${cfg}_extralibs"
 515             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 516             enable_deep $dep_sel
 517             enable_deep_weak $dep_sgs
 518         fi
 519
 520         disable ${cfg}_checking
 521     done
 522 }
 523
 524 print_config_h(){
 525     enabled $1 && v=1 || v=0
 526     echo "#define $2 $v"
 527 }
 528
 529 print_config_mak(){
 530     enabled $1 && v= || v=!
 531     echo "$v$2=yes"
 532 }
 533
 534 print_config_asm(){
 535     enabled $1 && echo "%define $2"
 536 }
 537
 538 print_config(){
 539     pfx=$1
 540     files=$2
 541     shift 2
 542     for cfg; do
 543         ucname="$(toupper $cfg)"
 544         for f in $files; do
 545             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
 546         done
 547     done
 548 }
 549
 550 print_enabled(){
 551     test "$1" = -n && end=" " && shift || end="\n"
 552     suf=$1
 553     shift
 554     for v; do
 555         enabled $v && printf "%s$end" ${v%$suf};
 556     done
 557 }
 558
 559 append(){
 560     var=$1
 561     shift
 562     eval "$var=\"\$$var $*\""
 563 }
 564
 565 prepend(){
 566     var=$1
 567     shift
 568     eval "$var=\"$* \$$var\""
 569 }
 570
 571 add_cppflags(){
 572     append CPPFLAGS $($filter_cppflags "$@")
 573 }
 574
 575 add_cflags(){
 576     append CFLAGS $($filter_cflags "$@")
 577 }
 578
 579 add_asflags(){
 580     append ASFLAGS $($filter_asflags "$@")
 581 }
 582
 583 add_ldflags(){
 584     append LDFLAGS "$@"
 585 }
 586
 587 add_extralibs(){
 588     prepend extralibs "$@"
 589 }
 590
 591 check_cmd(){
 592     log "$@"
 593     "$@" >> $logfile 2>&1
 594 }
 595
 596 check_cc(){
 597     log check_cc "$@"
 598     cat > $TMPC
 599     log_file $TMPC
 600     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
 601 }
 602
 603 check_cpp(){
 604     log check_cpp "$@"
 605     cat > $TMPC
 606     log_file $TMPC
 607     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
 608 }
 609
 610 check_as(){
 611     log check_as "$@"
 612     cat > $TMPC
 613     log_file $TMPC
 614     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
 615 }
 616
 617 check_asm(){
 618     log check_asm "$@"
 619     name="$1"
 620     code="$2"
 621     shift 2
 622     disable $name
 623     check_as "$@" <<EOF && enable $name
 624 void foo(void){ __asm__ volatile($code); }
 625 EOF
 626 }
 627
 628 check_yasm(){
 629     log check_yasm "$@"
 630     echo "$1" > $TMPS
 631     log_file $TMPS
 632     shift 1
 633     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 634 }
 635
 636 check_ld(){
 637     log check_ld "$@"
 638     flags=''
 639     libs=''
 640     for f; do
 641         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
 642     done
 643     check_cc $($filter_cflags $flags) || return
 644     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
 645 }
 646
 647 check_cppflags(){
 648     log check_cppflags "$@"
 649     set -- $($filter_cppflags "$@")
 650     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 651 int x;
 652 EOF
 653 }
 654
 655 check_cflags(){
 656     log check_cflags "$@"
 657     set -- $($filter_cflags "$@")
 658     check_cc "$@" <<EOF && append CFLAGS "$@"
 659 int x;
 660 EOF
 661 }
 662
 663 test_ldflags(){
 664     log test_ldflags "$@"
 665     check_ld "$@" <<EOF
 666 int main(void){ return 0; }
 667 EOF
 668 }
 669
 670 check_ldflags(){
 671     log check_ldflags "$@"
 672     test_ldflags "$@" && add_ldflags "$@"
 673 }
 674
 675 check_header(){
 676     log check_header "$@"
 677     header=$1
 678     shift
 679     disable_safe $header
 680     check_cpp "$@" <<EOF && enable_safe $header
 681 #include <$header>
 682 int x;
 683 EOF
 684 }
 685
 686 check_func(){
 687     log check_func "$@"
 688     func=$1
 689     shift
 690     disable $func
 691     check_ld "$@" <<EOF && enable $func
 692 extern int $func();
 693 int main(void){ $func(); }
 694 EOF
 695 }
 696
 697 check_mathfunc(){
 698     log check_mathfunc "$@"
 699     func=$1
 700     shift
 701     disable $func
 702     check_ld "$@" <<EOF && enable $func
 703 #include <math.h>
 704 float foo(float f) { return $func(f); }
 705 int main(void){ return 0; }
 706 EOF
 707 }
 708
 709 check_func_headers(){
 710     log check_func_headers "$@"
 711     headers=$1
 712     funcs=$2
 713     shift 2
 714     {
 715         for hdr in $headers; do
 716             echo "#include <$hdr>"
 717         done
 718         for func in $funcs; do
 719             echo "long check_$func(void) { return (long) $func; }"
 720         done
 721         echo "int main(void) { return 0; }"
 722     } | check_ld "$@" && enable $funcs && enable_safe $headers
 723 }
 724
 725 check_cpp_condition(){
 726     log check_cpp_condition "$@"
 727     header=$1
 728     condition=$2
 729     shift 2
 730     check_cpp $($filter_cppflags "$@") <<EOF
 731 #include <$header>
 732 #if !($condition)
 733 #error "unsatisfied condition: $condition"
 734 #endif
 735 EOF
 736 }
 737
 738 check_lib(){
 739     log check_lib "$@"
 740     header="$1"
 741     func="$2"
 742     shift 2
 743     check_header $header && check_func $func "$@" && add_extralibs "$@"
 744 }
 745
 746 check_lib2(){
 747     log check_lib2 "$@"
 748     headers="$1"
 749     funcs="$2"
 750     shift 2
 751     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 752 }
 753
 754 check_pkg_config(){
 755     log check_pkg_config "$@"
 756     pkg="$1"
 757     headers="$2"
 758     funcs="$3"
 759     shift 3
 760     $pkg_config --exists $pkg || return
 761     pkg_cflags=$($pkg_config --cflags $pkg)
 762     pkg_libs=$($pkg_config --libs $pkg)
 763     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 764         set_safe ${pkg}_cflags $pkg_cflags   &&
 765         set_safe ${pkg}_libs   $pkg_libs
 766 }
 767
 768 check_exec(){
 769     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 770 }
 771
 772 check_exec_crash(){
 773     code=$(cat)
 774
 775     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 776     # are safe but may not be available everywhere.  Thus we use
 777     # raise(SIGTERM) instead.  The check is run in a subshell so we
 778     # can redirect the "Terminated" message from the shell.  SIGBUS
 779     # is not defined by standard C so it is used conditionally.
 780
 781     (check_exec "$@") >> $logfile 2>&1 <<EOF
 782 #include <signal.h>
 783 static void sighandler(int sig){
 784     raise(SIGTERM);
 785 }
 786 int main(void){
 787     signal(SIGILL, sighandler);
 788     signal(SIGFPE, sighandler);
 789     signal(SIGSEGV, sighandler);
 790 #ifdef SIGBUS
 791     signal(SIGBUS, sighandler);
 792 #endif
 793     { $code }
 794 }
 795 EOF
 796 }
 797
 798 check_type(){
 799     log check_type "$@"
 800     headers=$1
 801     type=$2
 802     shift 2
 803     disable_safe "$type"
 804     incs=""
 805     for hdr in $headers; do
 806         incs="$incs
 807 #include <$hdr>"
 808     done
 809     check_cc "$@" <<EOF && enable_safe "$type"
 810 $incs
 811 $type v;
 812 EOF
 813 }
 814
 815 check_struct(){
 816     log check_type "$@"
 817     headers=$1
 818     struct=$2
 819     member=$3
 820     shift 3
 821     disable_safe "${struct}_${member}"
 822     incs=""
 823     for hdr in $headers; do
 824         incs="$incs
 825 #include <$hdr>"
 826     done
 827     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
 828 $incs
 829 const void *p = &(($struct *)0)->$member;
 830 EOF
 831 }
 832
 833 require(){
 834     name="$1"
 835     header="$2"
 836     func="$3"
 837     shift 3
 838     check_lib $header $func "$@" || die "ERROR: $name not found"
 839 }
 840
 841 require2(){
 842     name="$1"
 843     headers="$2"
 844     func="$3"
 845     shift 3
 846     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
 847 }
 848
 849 require_pkg_config(){
 850     pkg="$1"
 851     check_pkg_config "$@" || die "ERROR: $pkg not found"
 852     add_cflags    $(get_safe ${pkg}_cflags)
 853     add_extralibs $(get_safe ${pkg}_libs)
 854 }
 855
 856 check_host_cc(){
 857     log check_host_cc "$@"
 858     cat > $TMPC
 859     log_file $TMPC
 860     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
 861 }
 862
 863 check_host_cflags(){
 864     log check_host_cflags "$@"
 865     check_host_cc "$@" <<EOF && append host_cflags "$@"
 866 int x;
 867 EOF
 868 }
 869
 870 apply(){
 871     file=$1
 872     shift
 873     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
 874 }
 875
 876 cp_if_changed(){
 877     cmp -s "$1" "$2" &&
 878         echo "$2 is unchanged" ||
 879         cp -f "$1" "$2"
 880 }
 881
 882 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
 883 # system-dependent things.
 884
 885 COMPONENT_LIST="
 886     bsfs
 887     decoders
 888     demuxers
 889     encoders
 890     filters
 891     hwaccels
 892     indevs
 893     muxers
 894     outdevs
 895     parsers
 896     protocols
 897 "
 898
 899 CONFIG_LIST="
 900     $COMPONENT_LIST
 901     aandct
 902     ac3dsp
 903     avcodec
 904     avdevice
 905     avfilter
 906     avformat
 907     avisynth
 908     bzlib
 909     dct
 910     doc
 911     dwt
 912     dxva2
 913     fastdiv
 914     ffmpeg
 915     ffplay
 916     ffprobe
 917     ffserver
 918     fft
 919     frei0r
 920     golomb
 921     gpl
 922     gray
 923     h264dsp
 924     h264pred
 925     hardcoded_tables
 926     huffman
 927     libdc1394
 928     libdirac
 929     libfaac
 930     libfreetype
 931     libgsm
 932     libmp3lame
 933     libnut
 934     libopencore_amrnb
 935     libopencore_amrwb
 936     libopencv
 937     libopenjpeg
 938     librtmp
 939     libschroedinger
 940     libspeex
 941     libtheora
 942     libvo_aacenc
 943     libvo_amrwbenc
 944     libvorbis
 945     libvpx
 946     libx264
 947     libxavs
 948     libxvid
 949     lpc
 950     lsp
 951     mdct
 952     memalign_hack
 953     mlib
 954     mpegaudiodsp
 955     network
 956     nonfree
 957     pic
 958     postproc
 959     rdft
 960     rtpdec
 961     runtime_cpudetect
 962     shared
 963     sinewin
 964     small
 965     sram
 966     static
 967     swscale
 968     swscale_alpha
 969     vaapi
 970     vdpau
 971     version3
 972     x11grab
 973     zlib
 974 "
 975
 976 THREADS_LIST='
 977     pthreads
 978     w32threads
 979 '
 980
 981 ARCH_LIST='
 982     alpha
 983     arm
 984     avr32
 985     avr32_ap
 986     avr32_uc
 987     bfin
 988     ia64
 989     m68k
 990     mips
 991     mips64
 992     parisc
 993     ppc
 994     ppc64
 995     s390
 996     sh4
 997     sparc
 998     sparc64
 999     tomi
1000     x86
1001     x86_32
1002     x86_64
1003 '
1004
1005 ARCH_EXT_LIST='
1006     altivec
1007     amd3dnow
1008     amd3dnowext
1009     armv5te
1010     armv6
1011     armv6t2
1012     armvfp
1013     avx
1014     iwmmxt
1015     mmi
1016     mmx
1017     mmx2
1018     neon
1019     ppc4xx
1020     sse
1021     ssse3
1022     vfpv3
1023     vis
1024 '
1025
1026 HAVE_LIST_PUB='
1027     bigendian
1028     fast_unaligned
1029 '
1030
1031 HAVE_LIST="
1032     $ARCH_EXT_LIST
1033     $HAVE_LIST_PUB
1034     $THREADS_LIST
1035     aligned_stack
1036     alsa_asoundlib_h
1037     altivec_h
1038     arpa_inet_h
1039     attribute_may_alias
1040     attribute_packed
1041     bswap
1042     closesocket
1043     cmov
1044     dcbzl
1045     dev_bktr_ioctl_bt848_h
1046     dev_bktr_ioctl_meteor_h
1047     dev_ic_bt8xx_h
1048     dev_video_meteor_ioctl_meteor_h
1049     dev_video_bktr_ioctl_bt848_h
1050     dlfcn_h
1051     dlopen
1052     dos_paths
1053     ebp_available
1054     ebx_available
1055     exp2
1056     exp2f
1057     fast_64bit
1058     fast_clz
1059     fast_cmov
1060     fcntl
1061     fork
1062     getaddrinfo
1063     gethrtime
1064     GetProcessMemoryInfo
1065     GetProcessTimes
1066     getrusage
1067     gnu_as
1068     struct_rusage_ru_maxrss
1069     ibm_asm
1070     inet_aton
1071     inline_asm
1072     isatty
1073     ldbrx
1074     libdc1394_1
1075     libdc1394_2
1076     llrint
1077     llrintf
1078     local_aligned_16
1079     local_aligned_8
1080     localtime_r
1081     log2
1082     log2f
1083     loongson
1084     lrint
1085     lrintf
1086     lzo1x_999_compress
1087     machine_ioctl_bt848_h
1088     machine_ioctl_meteor_h
1089     malloc_h
1090     MapViewOfFile
1091     memalign
1092     mkstemp
1093     mmap
1094     pld
1095     posix_memalign
1096     round
1097     roundf
1098     sdl
1099     sdl_video_size
1100     setmode
1101     sndio_h
1102     socklen_t
1103     soundcard_h
1104     poll_h
1105     setrlimit
1106     strerror_r
1107     strtok_r
1108     struct_addrinfo
1109     struct_ipv6_mreq
1110     struct_sockaddr_in6
1111     struct_sockaddr_sa_len
1112     struct_sockaddr_storage
1113     symver
1114     symver_gnu_asm
1115     symver_asm_label
1116     sys_mman_h
1117     sys_resource_h
1118     sys_select_h
1119     sys_soundcard_h
1120     sys_videoio_h
1121     ten_operands
1122     threads
1123     trunc
1124     truncf
1125     vfp_args
1126     VirtualAlloc
1127     winsock2_h
1128     xform_asm
1129     xmm_clobbers
1130     yasm
1131 "
1132
1133 # options emitted with CONFIG_ prefix but not available on command line
1134 CONFIG_EXTRA="
1135     avutil
1136     gplv3
1137     lgplv3
1138 "
1139
1140 CMDLINE_SELECT="
1141     $ARCH_EXT_LIST
1142     $CONFIG_LIST
1143     $THREADS_LIST
1144     asm
1145     cross_compile
1146     debug
1147     extra_warnings
1148     logging
1149     optimizations
1150     symver
1151     yasm
1152 "
1153
1154 PATHS_LIST='
1155     bindir
1156     datadir
1157     incdir
1158     libdir
1159     mandir
1160     prefix
1161     shlibdir
1162 '
1163
1164 CMDLINE_SET="
1165     $PATHS_LIST
1166     ar
1167     arch
1168     as
1169     build_suffix
1170     cc
1171     cpu
1172     cross_prefix
1173     dep_cc
1174     extra_version
1175     host_cc
1176     host_cflags
1177     host_ldflags
1178     host_libs
1179     host_os
1180     ld
1181     logfile
1182     malloc_prefix
1183     nm
1184     pkg_config
1185     samples
1186     sysinclude
1187     sysroot
1188     target_exec
1189     target_os
1190     target_path
1191 "
1192
1193 CMDLINE_APPEND="
1194     extra_cflags
1195 "
1196
1197 # code dependency declarations
1198
1199 # architecture extensions
1200
1201 armv5te_deps="arm"
1202 armv6_deps="arm"
1203 armv6t2_deps="arm"
1204 armvfp_deps="arm"
1205 iwmmxt_deps="arm"
1206 neon_deps="arm"
1207 vfpv3_deps="armvfp"
1208
1209 mmi_deps="mips"
1210
1211 altivec_deps="ppc"
1212 ppc4xx_deps="ppc"
1213
1214 vis_deps="sparc"
1215
1216 x86_64_suggest="cmov fast_cmov"
1217 amd3dnow_deps="mmx"
1218 amd3dnowext_deps="amd3dnow"
1219 mmx_deps="x86"
1220 mmx2_deps="mmx"
1221 sse_deps="mmx"
1222 ssse3_deps="sse"
1223 avx_deps="ssse3"
1224
1225 aligned_stack_if_any="ppc x86"
1226 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1227 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1228 fast_unaligned_if_any="armv6 ppc x86"
1229
1230 need_memalign="altivec neon sse"
1231 inline_asm_deps="!tms470"
1232
1233 symver_if_any="symver_asm_label symver_gnu_asm"
1234
1235 # subsystems
1236 dct_select="rdft"
1237 mdct_select="fft"
1238 rdft_select="fft"
1239 mpegaudiodsp_select="dct"
1240
1241 # decoders / encoders / hardware accelerators
1242 aac_decoder_select="mdct sinewin"
1243 aac_encoder_select="mdct sinewin"
1244 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1245 ac3_decoder_select="mdct ac3dsp ac3_parser"
1246 ac3_encoder_select="mdct ac3dsp"
1247 ac3_fixed_encoder_select="mdct ac3dsp"
1248 alac_encoder_select="lpc"
1249 amrnb_decoder_select="lsp"
1250 amrwb_decoder_select="lsp"
1251 atrac1_decoder_select="mdct sinewin"
1252 atrac3_decoder_select="mdct"
1253 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1254 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1255 cavs_decoder_select="golomb"
1256 cook_decoder_select="mdct sinewin"
1257 cscd_decoder_suggest="zlib"
1258 dca_decoder_select="mdct"
1259 dnxhd_encoder_select="aandct"
1260 dxa_decoder_select="zlib"
1261 eac3_decoder_select="ac3_decoder"
1262 eac3_encoder_select="mdct ac3dsp"
1263 eamad_decoder_select="aandct"
1264 eatgq_decoder_select="aandct"
1265 eatqi_decoder_select="aandct"
1266 ffv1_decoder_select="golomb"
1267 flac_decoder_select="golomb"
1268 flac_encoder_select="golomb lpc"
1269 flashsv_decoder_select="zlib"
1270 flashsv_encoder_select="zlib"
1271 flv_decoder_select="h263_decoder"
1272 flv_encoder_select="h263_encoder"
1273 fraps_decoder_select="huffman"
1274 h261_encoder_select="aandct"
1275 h263_decoder_select="h263_parser"
1276 h263_encoder_select="aandct"
1277 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1278 h263i_decoder_select="h263_decoder"
1279 h263p_encoder_select="h263_encoder"
1280 h264_decoder_select="golomb h264dsp h264pred"
1281 h264_dxva2_hwaccel_deps="dxva2api_h"
1282 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1283 h264_vaapi_hwaccel_select="vaapi"
1284 h264_vdpau_decoder_select="vdpau h264_decoder"
1285 imc_decoder_select="fft mdct sinewin"
1286 jpegls_decoder_select="golomb"
1287 jpegls_encoder_select="golomb"
1288 ljpeg_encoder_select="aandct"
1289 loco_decoder_select="golomb"
1290 mjpeg_encoder_select="aandct"
1291 mlp_decoder_select="mlp_parser"
1292 mp1_decoder_select="mpegaudiodsp"
1293 mp2_decoder_select="mpegaudiodsp"
1294 mp3adu_decoder_select="mpegaudiodsp"
1295 mp3_decoder_select="mpegaudiodsp"
1296 mp3on4_decoder_select="mpegaudiodsp"
1297 mp1float_decoder_select="mpegaudiodsp"
1298 mp2float_decoder_select="mpegaudiodsp"
1299 mp3adufloat_decoder_select="mpegaudiodsp"
1300 mp3float_decoder_select="mpegaudiodsp"
1301 mp3on4float_decoder_select="mpegaudiodsp"
1302 mpeg1video_encoder_select="aandct"
1303 mpeg2video_encoder_select="aandct"
1304 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1305 mpeg4_encoder_select="h263_encoder"
1306 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1307 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1308 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1309 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1310 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1311 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1312 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1313 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1314 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1315 msmpeg4v1_decoder_select="h263_decoder"
1316 msmpeg4v1_encoder_select="h263_encoder"
1317 msmpeg4v2_decoder_select="h263_decoder"
1318 msmpeg4v2_encoder_select="h263_encoder"
1319 msmpeg4v3_decoder_select="h263_decoder"
1320 msmpeg4v3_encoder_select="h263_encoder"
1321 nellymoser_decoder_select="mdct sinewin"
1322 nellymoser_encoder_select="mdct sinewin"
1323 png_decoder_select="zlib"
1324 png_encoder_select="zlib"
1325 qcelp_decoder_select="lsp"
1326 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1327 ra_144_encoder_select="lpc"
1328 rv10_decoder_select="h263_decoder"
1329 rv10_encoder_select="h263_encoder"
1330 rv20_decoder_select="h263_decoder"
1331 rv20_encoder_select="h263_encoder"
1332 rv30_decoder_select="golomb h264pred"
1333 rv40_decoder_select="golomb h264pred"
1334 shorten_decoder_select="golomb"
1335 sipr_decoder_select="lsp"
1336 snow_decoder_select="dwt"
1337 snow_encoder_select="aandct dwt"
1338 svq1_encoder_select="aandct"
1339 svq3_decoder_select="golomb h264dsp h264pred"
1340 svq3_decoder_suggest="zlib"
1341 theora_decoder_select="vp3_decoder"
1342 tiff_decoder_suggest="zlib"
1343 tiff_encoder_suggest="zlib"
1344 truehd_decoder_select="mlp_decoder"
1345 tscc_decoder_select="zlib"
1346 twinvq_decoder_select="mdct lsp sinewin"
1347 vc1_decoder_select="h263_decoder"
1348 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1349 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1350 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1351 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1352 vorbis_decoder_select="mdct"
1353 vorbis_encoder_select="mdct"
1354 vp6_decoder_select="huffman"
1355 vp6a_decoder_select="vp6_decoder"
1356 vp6f_decoder_select="vp6_decoder"
1357 vp8_decoder_select="h264pred"
1358 wmapro_decoder_select="mdct sinewin"
1359 wmav1_decoder_select="mdct sinewin"
1360 wmav1_encoder_select="mdct sinewin"
1361 wmav2_decoder_select="mdct sinewin"
1362 wmav2_encoder_select="mdct sinewin"
1363 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1364 wmv1_decoder_select="h263_decoder"
1365 wmv1_encoder_select="h263_encoder"
1366 wmv2_decoder_select="h263_decoder"
1367 wmv2_encoder_select="h263_encoder"
1368 wmv3_decoder_select="vc1_decoder"
1369 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1370 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1371 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1372 zlib_decoder_select="zlib"
1373 zlib_encoder_select="zlib"
1374 zmbv_decoder_select="zlib"
1375 zmbv_encoder_select="zlib"
1376
1377 vaapi_deps="va_va_h"
1378 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1379
1380 # parsers
1381 h264_parser_select="golomb h264dsp h264pred"
1382
1383 # external libraries
1384 libdirac_decoder_deps="libdirac !libschroedinger"
1385 libdirac_encoder_deps="libdirac"
1386 libfaac_encoder_deps="libfaac"
1387 libgsm_decoder_deps="libgsm"
1388 libgsm_encoder_deps="libgsm"
1389 libgsm_ms_decoder_deps="libgsm"
1390 libgsm_ms_encoder_deps="libgsm"
1391 libmp3lame_encoder_deps="libmp3lame"
1392 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1393 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1394 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1395 libopenjpeg_decoder_deps="libopenjpeg"
1396 libschroedinger_decoder_deps="libschroedinger"
1397 libschroedinger_encoder_deps="libschroedinger"
1398 libspeex_decoder_deps="libspeex"
1399 libtheora_encoder_deps="libtheora"
1400 libvo_aacenc_encoder_deps="libvo_aacenc"
1401 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1402 libvorbis_encoder_deps="libvorbis"
1403 libvpx_decoder_deps="libvpx"
1404 libvpx_encoder_deps="libvpx"
1405 libx264_encoder_deps="libx264"
1406 libxavs_encoder_deps="libxavs"
1407 libxvid_encoder_deps="libxvid"
1408
1409 # demuxers / muxers
1410 ac3_demuxer_select="ac3_parser"
1411 asf_stream_muxer_select="asf_muxer"
1412 avisynth_demuxer_deps="avisynth"
1413 dirac_demuxer_select="dirac_parser"
1414 eac3_demuxer_select="ac3_parser"
1415 flac_demuxer_select="flac_parser"
1416 ipod_muxer_select="mov_muxer"
1417 libnut_demuxer_deps="libnut"
1418 libnut_muxer_deps="libnut"
1419 matroska_audio_muxer_select="matroska_muxer"
1420 matroska_demuxer_suggest="zlib bzlib"
1421 mov_demuxer_suggest="zlib"
1422 mp3_demuxer_select="mpegaudio_parser"
1423 mp4_muxer_select="mov_muxer"
1424 mpegtsraw_demuxer_select="mpegts_demuxer"
1425 mxf_d10_muxer_select="mxf_muxer"
1426 ogg_demuxer_select="golomb"
1427 psp_muxer_select="mov_muxer"
1428 rtp_demuxer_select="sdp_demuxer"
1429 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1430 rtsp_demuxer_select="http_protocol rtpdec"
1431 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1432 sap_demuxer_select="sdp_demuxer"
1433 sap_muxer_select="rtp_muxer rtp_protocol"
1434 sdp_demuxer_select="rtpdec"
1435 spdif_muxer_select="aac_parser"
1436 tg2_muxer_select="mov_muxer"
1437 tgp_muxer_select="mov_muxer"
1438 w64_demuxer_deps="wav_demuxer"
1439
1440 # indevs / outdevs
1441 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1442 alsa_outdev_deps="alsa_asoundlib_h"
1443 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1444 dv1394_indev_deps="dv1394 dv_demuxer"
1445 fbdev_indev_deps="linux_fb_h"
1446 jack_indev_deps="jack_jack_h"
1447 libdc1394_indev_deps="libdc1394"
1448 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1449 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1450 sndio_indev_deps="sndio_h"
1451 sndio_outdev_deps="sndio_h"
1452 v4l_indev_deps="linux_videodev_h"
1453 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1454 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1455 vfwcap_indev_extralibs="-lavicap32"
1456 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1457 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1458
1459 # protocols
1460 gopher_protocol_deps="network"
1461 http_protocol_deps="network"
1462 http_protocol_select="tcp_protocol"
1463 mmsh_protocol_select="http_protocol"
1464 mmst_protocol_deps="network"
1465 rtmp_protocol_select="tcp_protocol"
1466 rtp_protocol_select="udp_protocol"
1467 tcp_protocol_deps="network"
1468 udp_protocol_deps="network"
1469
1470 # filters
1471 blackframe_filter_deps="gpl"
1472 cropdetect_filter_deps="gpl"
1473 drawtext_filter_deps="libfreetype"
1474 frei0r_filter_deps="frei0r dlopen strtok_r"
1475 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1476 hqdn3d_filter_deps="gpl"
1477 ocv_filter_deps="libopencv"
1478 scale_filter_deps="swscale"
1479 yadif_filter_deps="gpl"
1480
1481 # libraries
1482 avdevice_deps="avcodec avformat"
1483 avformat_deps="avcodec"
1484 postproc_deps="gpl"
1485
1486 # programs
1487 ffmpeg_deps="avcodec avformat swscale"
1488 ffmpeg_select="buffer_filter"
1489 ffplay_deps="avcodec avformat swscale sdl"
1490 ffplay_select="rdft"
1491 ffprobe_deps="avcodec avformat"
1492 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1493 ffserver_extralibs='$ldl'
1494
1495 doc_deps="texi2html"
1496
1497 # tests
1498
1499 test_deps(){
1500     suf1=$1
1501     suf2=$2
1502     shift 2
1503     for v; do
1504         dep=${v%=*}
1505         tests=${v#*=}
1506         for name in ${tests}; do
1507             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1508         done
1509     done
1510 }
1511
1512 set_ne_test_deps(){
1513     eval ${1}_be_test_deps="bigendian"
1514     eval ${1}_le_test_deps="!bigendian"
1515 }
1516
1517 test_deps _encoder _decoder                                             \
1518     adpcm_g726=g726                                                     \
1519     adpcm_ima_qt                                                        \
1520     adpcm_ima_wav                                                       \
1521     adpcm_ms                                                            \
1522     adpcm_swf                                                           \
1523     adpcm_yamaha=adpcm_yam                                              \
1524     alac                                                                \
1525     asv1                                                                \
1526     asv2                                                                \
1527     bmp                                                                 \
1528     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1529     dvvideo="dv dv50"                                                   \
1530     ffv1                                                                \
1531     flac                                                                \
1532     flashsv                                                             \
1533     flv                                                                 \
1534     gif                                                                 \
1535     h261                                                                \
1536     h263="h263 h263p"                                                   \
1537     huffyuv                                                             \
1538     jpegls                                                              \
1539     mjpeg="jpg mjpeg ljpeg"                                             \
1540     mp2                                                                 \
1541     mpeg1video="mpeg mpeg1b"                                            \
1542     mpeg2video="mpeg2 mpeg2thread"                                      \
1543     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1544     msmpeg4v3=msmpeg4                                                   \
1545     msmpeg4v2                                                           \
1546     pbm=pbmpipe                                                         \
1547     pcx                                                                 \
1548     pgm="pgm pgmpipe"                                                   \
1549     png                                                                 \
1550     ppm="ppm ppmpipe"                                                   \
1551     rawvideo="rgb yuv"                                                  \
1552     roq                                                                 \
1553     rv10                                                                \
1554     rv20                                                                \
1555     sgi                                                                 \
1556     snow="snow snowll"                                                  \
1557     svq1                                                                \
1558     targa=tga                                                           \
1559     tiff                                                                \
1560     wmav1                                                               \
1561     wmav2                                                               \
1562     wmv1                                                                \
1563     wmv2                                                                \
1564
1565 test_deps _muxer _demuxer                                               \
1566     aiff                                                                \
1567     pcm_alaw=alaw                                                       \
1568     asf                                                                 \
1569     au                                                                  \
1570     avi                                                                 \
1571     dv=dv_fmt                                                           \
1572     ffm                                                                 \
1573     flv=flv_fmt                                                         \
1574     gxf                                                                 \
1575     matroska=mkv                                                        \
1576     mmf                                                                 \
1577     mov                                                                 \
1578     pcm_mulaw=mulaw                                                     \
1579     mxf                                                                 \
1580     nut                                                                 \
1581     ogg                                                                 \
1582     rawvideo=pixfmt                                                     \
1583     rm                                                                  \
1584     swf                                                                 \
1585     mpegts=ts                                                           \
1586     voc                                                                 \
1587     wav                                                                 \
1588     yuv4mpegpipe=yuv4mpeg                                               \
1589
1590 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1591 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1592
1593 set_ne_test_deps pixdesc
1594 set_ne_test_deps pixfmts_copy
1595 set_ne_test_deps pixfmts_crop
1596 set_ne_test_deps pixfmts_hflip
1597 set_ne_test_deps pixfmts_null
1598 set_ne_test_deps pixfmts_pad
1599 set_ne_test_deps pixfmts_scale
1600 set_ne_test_deps pixfmts_vflip
1601
1602 # default parameters
1603
1604 logfile="config.log"
1605
1606 # installation paths
1607 prefix_default="/usr/local"
1608 bindir_default='${prefix}/bin'
1609 datadir_default='${prefix}/share/ffmpeg'
1610 incdir_default='${prefix}/include'
1611 libdir_default='${prefix}/lib'
1612 mandir_default='${prefix}/share/man'
1613 shlibdir_default="$libdir_default"
1614
1615 # toolchain
1616 ar_default="ar"
1617 cc_default="gcc"
1618 cc_version=\"unknown\"
1619 host_cc_default="gcc"
1620 ln_s="ln -sf"
1621 nm_default="nm"
1622 objformat="elf"
1623 pkg_config_default=pkg-config
1624 ranlib="ranlib"
1625 yasmexe="yasm"
1626 nogas=":"
1627
1628 nm_opts='-g'
1629
1630 # machine
1631 arch_default=$(uname -m)
1632 cpu="generic"
1633
1634 # OS
1635 target_os_default=$(tolower $(uname -s))
1636 host_os=$target_os_default
1637
1638 # configurable options
1639 enable avcodec
1640 enable avdevice
1641 enable avfilter
1642 enable avformat
1643 enable avutil
1644 enable asm
1645 enable debug
1646 enable doc
1647 enable fastdiv
1648 enable ffmpeg
1649 enable ffplay
1650 enable ffprobe
1651 enable ffserver
1652 enable network
1653 enable optimizations
1654 enable postproc
1655 enable protocols
1656 enable static
1657 enable swscale
1658 enable swscale_alpha
1659
1660 # build settings
1661 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1662 FFSERVERLDFLAGS=-Wl,-E
1663 LIBPREF="lib"
1664 LIBSUF=".a"
1665 FULLNAME='$(NAME)$(BUILDSUF)'
1666 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1667 SLIBPREF="lib"
1668 SLIBSUF=".so"
1669 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1670 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1671 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1672 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1673
1674 CC_O='-o $@'
1675
1676 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1677 host_libs='-lm'
1678
1679 target_path='$(CURDIR)'
1680
1681 # since the object filename is not given with the -MM flag, the compiler
1682 # is only able to print the basename, and we must add the path ourselves
1683 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1684 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1685
1686 # find source path
1687 if test -f configure; then
1688     source_path="$(pwd)"
1689     disable source_path_used
1690 else
1691     source_path=$(cd $(dirname "$0"); pwd)
1692     enable source_path_used
1693     echo "$source_path" | grep -q '[[:blank:]]' &&
1694         die "Out of tree builds are impossible with whitespace in source path."
1695     test -e "$source_path/config.h" &&
1696         die "Out of tree builds are impossible with config.h in source dir."
1697 fi
1698
1699 for v in "$@"; do
1700     r=${v#*=}
1701     l=${v%"$r"}
1702     r=$(sh_quote "$r")
1703     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1704 done
1705
1706 find_things(){
1707     thing=$1
1708     pattern=$2
1709     file=$source_path/$3
1710     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1711 }
1712
1713 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1714 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1715 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1716 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1717 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1718 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1719 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1720 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1721 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1722 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1723 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1724
1725 find_tests(){
1726     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1727 }
1728
1729 ACODEC_TESTS=$(find_tests acodec)
1730 VCODEC_TESTS=$(find_tests vsynth1)
1731 LAVF_TESTS=$(find_tests lavf)
1732 LAVFI_TESTS=$(find_tests lavfi)
1733 SEEK_TESTS=$(find_tests seek seek_)
1734
1735 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1736
1737 for n in $COMPONENT_LIST; do
1738     v=$(toupper ${n%s})_LIST
1739     eval enable \$$v
1740     eval ${n}_if_any="\$$v"
1741 done
1742
1743 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1744
1745 die_unknown(){
1746     echo "Unknown option \"$1\"."
1747     echo "See $0 --help for available options."
1748     exit 1
1749 }
1750
1751 show_list() {
1752     suffix=_$1
1753     shift
1754     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1755     exit 0
1756 }
1757
1758 for opt do
1759     optval="${opt#*=}"
1760     case "$opt" in
1761     --extra-ldflags=*) add_ldflags $optval
1762     ;;
1763     --extra-libs=*) add_extralibs $optval
1764     ;;
1765     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1766     ;;
1767     --enable-debug=*) debuglevel="$optval"
1768     ;;
1769     --disable-everything)
1770     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1771     ;;
1772     --enable-*=*|--disable-*=*)
1773     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1774     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1775     eval list=\$$(toupper $thing)_LIST
1776     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1777     $action $(filter "$name" $list)
1778     ;;
1779     --enable-?*|--disable-?*)
1780     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1781     if is_in $option $COMPONENT_LIST; then
1782         test $action = disable && action=unset
1783         eval $action \$$(toupper ${option%s})_LIST
1784     elif is_in $option $CMDLINE_SELECT; then
1785         $action $option
1786     else
1787         die_unknown $opt
1788     fi
1789     ;;
1790     --list-*)
1791         NAME="${opt#--list-}"
1792         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1793         NAME=${NAME%s}
1794         eval show_list $NAME \$$(toupper $NAME)_LIST
1795     ;;
1796     --help|-h) show_help
1797     ;;
1798     *)
1799     optname="${opt%%=*}"
1800     optname="${optname#--}"
1801     optname=$(echo "$optname" | sed 's/-/_/g')
1802     if is_in $optname $CMDLINE_SET; then
1803         eval $optname='$optval'
1804     elif is_in $optname $CMDLINE_APPEND; then
1805         append $optname "$optval"
1806     else
1807          die_unknown $opt
1808     fi
1809     ;;
1810     esac
1811 done
1812
1813 disabled logging && logfile=/dev/null
1814
1815 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
1816 set >> $logfile
1817
1818 test -n "$cross_prefix" && enable cross_compile
1819
1820 if enabled cross_compile; then
1821     test -n "$arch" && test -n "$target_os" ||
1822         die "Must specify target arch and OS when cross-compiling"
1823 fi
1824
1825 set_default arch target_os
1826
1827 ar_default="${cross_prefix}${ar_default}"
1828 cc_default="${cross_prefix}${cc_default}"
1829 nm_default="${cross_prefix}${nm_default}"
1830 pkg_config_default="${cross_prefix}${pkg_config_default}"
1831 ranlib="${cross_prefix}${ranlib}"
1832
1833 sysinclude_default="${sysroot}/usr/include"
1834
1835 set_default cc nm pkg_config sysinclude
1836 enabled cross_compile || host_cc_default=$cc
1837 set_default host_cc
1838
1839 if ! $pkg_config --version >/dev/null 2>&1; then
1840     warn "$pkg_config not found, library detection may fail."
1841     pkg_config=false
1842 fi
1843
1844 exesuf() {
1845     case $1 in
1846         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1847     esac
1848 }
1849
1850 EXESUF=$(exesuf $target_os)
1851 HOSTEXESUF=$(exesuf $host_os)
1852
1853 # set temporary file name
1854 : ${TMPDIR:=$TEMPDIR}
1855 : ${TMPDIR:=$TMP}
1856 : ${TMPDIR:=/tmp}
1857
1858 if ! check_cmd mktemp -u XXXXXX; then
1859     # simple replacement for missing mktemp
1860     # NOT SAFE FOR GENERAL USE
1861     mktemp(){
1862         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1863     }
1864 fi
1865
1866 tmpfile(){
1867     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1868         (set -C; exec > $tmp) 2>/dev/null ||
1869         die "Unable to create temporary file in $TMPDIR."
1870     append TMPFILES $tmp
1871     eval $1=$tmp
1872 }
1873
1874 trap 'rm -f -- $TMPFILES' EXIT
1875
1876 tmpfile TMPC  .c
1877 tmpfile TMPE  $EXESUF
1878 tmpfile TMPH  .h
1879 tmpfile TMPO  .o
1880 tmpfile TMPS  .S
1881 tmpfile TMPV  .ver
1882 tmpfile TMPSH .sh
1883 tmpfile TMPASM .asm
1884
1885 unset -f mktemp
1886
1887 chmod +x $TMPE
1888
1889 # make sure we can execute files in $TMPDIR
1890 cat > $TMPSH 2>> $logfile <<EOF
1891 #! /bin/sh
1892 EOF
1893 chmod +x $TMPSH >> $logfile 2>&1
1894 if ! $TMPSH >> $logfile 2>&1; then
1895     cat <<EOF
1896 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1897 variable to another directory and make sure that it is not mounted noexec.
1898 EOF
1899     die "Sanity test failed."
1900 fi
1901
1902 filter_cflags=echo
1903 filter_cppflags=echo
1904 filter_asflags=echo
1905
1906 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1907     cc_type=llvm_gcc
1908     cc_version=__VERSION__
1909     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1910     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1911     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1912     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1913     speed_cflags='-O3'
1914     size_cflags='-Os'
1915 elif $cc -v 2>&1 | grep -qi ^gcc; then
1916     cc_type=gcc
1917     cc_version=__VERSION__
1918     gcc_version=$($cc --version | head -n1)
1919     gcc_basever=$($cc -dumpversion)
1920     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1921     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1922     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1923     if ! $cc -dumpversion | grep -q '^2\.'; then
1924         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1925         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1926     fi
1927     speed_cflags='-O3'
1928     size_cflags='-Os'
1929 elif $cc --version 2>/dev/null | grep -q Intel; then
1930     cc_type=icc
1931     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1932     cc_ident=$($cc --version | head -n1)
1933     icc_version=$($cc -dumpversion)
1934     CC_DEPFLAGS='-MMD'
1935     AS_DEPFLAGS='-MMD'
1936     speed_cflags='-O3'
1937     size_cflags='-Os'
1938     noopt_cflags='-O1'
1939 elif $cc -v 2>&1 | grep -q xlc; then
1940     cc_type=xlc
1941     cc_version="AV_STRINGIFY(__IBMC__)"
1942     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1943     speed_cflags='-O5'
1944     size_cflags='-O5 -qcompact'
1945 elif $cc -V 2>/dev/null | grep -q Compaq; then
1946     cc_type=ccc
1947     cc_version="AV_STRINGIFY(__DECC_VER)"
1948     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1949     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1950     debuglevel=3
1951     add_ldflags -Wl,-z,now # calls to libots crash without this
1952     speed_cflags='-fast'
1953     size_cflags='-O1'
1954 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1955     test -d "$sysroot" || die "No valid sysroot specified."
1956     cc_type=armcc
1957     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1958     cc_ident=$($cc --vsn | head -n1)
1959     armcc_conf="$PWD/armcc.conf"
1960     $cc --arm_linux_configure                 \
1961         --arm_linux_config_file="$armcc_conf" \
1962         --configure_sysroot="$sysroot"        \
1963         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1964         die "Error creating armcc configuration file."
1965     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1966     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1967     as_default="${cross_prefix}gcc"
1968     CC_DEPFLAGS='-MMD'
1969     AS_DEPFLAGS='-MMD'
1970     speed_cflags='-O3'
1971     size_cflags='-Os'
1972     filter_asflags="filter_out -W${armcc_opt}*"
1973 elif $cc -version 2>/dev/null | grep -q TMS470; then
1974     cc_type=tms470
1975     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1976     cc_ident=$($cc -version | head -n1 | tr -s ' ')
1977     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1978     CC_O='-fr=$(@D)'
1979     as_default="${cross_prefix}gcc"
1980     ld_default="${cross_prefix}gcc"
1981     TMPO=$(basename $TMPC .c).o
1982     append TMPFILES $TMPO
1983     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
1984     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
1985     AS_DEPFLAGS='-MMD'
1986     speed_cflags='-O3 -mf=5'
1987     size_cflags='-O3 -mf=2'
1988     filter_cflags=tms470_flags
1989     tms470_flags(){
1990         for flag; do
1991             case $flag in
1992                 -march=*|-mcpu=*)
1993                     case "${flag#*=}" in
1994                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
1995                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
1996                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
1997                         armv6*|arm11*)          echo -mv=6   ;;
1998                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
1999                                                 echo -mv=5e  ;;
2000                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2001                     esac
2002                     ;;
2003                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2004                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2005                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2006                 -msoft-float)   echo --float_support=vfplib       ;;
2007                 -O[0-3]|-mf=*)  echo $flag                        ;;
2008                 -g)             echo -g -mn                       ;;
2009                 -pds=*)         echo $flag                        ;;
2010             esac
2011         done
2012     }
2013 elif $cc -v 2>&1 | grep -q clang; then
2014     cc_type=clang
2015     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2016         cc_version=__clang_version__ || cc_version=__VERSION__
2017     cc_ident=$($cc --version | head -n1)
2018     CC_DEPFLAGS='-MMD'
2019     AS_DEPFLAGS='-MMD'
2020     speed_cflags='-O3'
2021     size_cflags='-Os'
2022 elif $cc -V 2>&1 | grep -q Sun; then
2023     cc_type=suncc
2024     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2025     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2026     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2027     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2028     speed_cflags='-O5'
2029     size_cflags='-O5 -xspace'
2030     filter_cflags=suncc_flags
2031     suncc_flags(){
2032         for flag; do
2033             case $flag in
2034                 -march=*|-mcpu=*)
2035                     case "${flag#*=}" in
2036                         native)                   echo -xtarget=native       ;;
2037                         v9|niagara)               echo -xarch=sparc          ;;
2038                         ultrasparc)               echo -xarch=sparcvis       ;;
2039                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2040                         i586|pentium)             echo -xchip=pentium        ;;
2041                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2042                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2043                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2044                         pentium4*)          echo -xtarget=pentium4           ;;
2045                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2046                         *-sse3)             echo -xarch=sse3                 ;;
2047                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2048                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2049                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2050                         k8|opteron|athlon64|athlon-fx)
2051                                                   echo -xarch=sse2a          ;;
2052                         athlon*)                  echo -xarch=pentium_proa   ;;
2053                     esac
2054                     ;;
2055                 -std=c99)             echo -xc99              ;;
2056                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2057                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2058                 -W*,*)                echo $flag              ;;
2059                 -f*-*|-W*)                                    ;;
2060                 *)                    echo $flag              ;;
2061             esac
2062         done
2063     }
2064 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2065     cc_type=pathscale
2066     cc_version=__PATHSCALE__
2067     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2068     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2069     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2070     speed_cflags='-O2'
2071     size_cflags='-Os'
2072 elif $cc -v 2>&1 | grep -q Open64; then
2073     cc_type=open64
2074     cc_version=__OPEN64__
2075     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2076     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2077     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2078     speed_cflags='-O2'
2079     size_cflags='-Os'
2080 fi
2081
2082 test -n "$cc_type" && enable $cc_type ||
2083     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2084
2085 : ${as_default:=$cc}
2086 : ${dep_cc_default:=$cc}
2087 : ${ld_default:=$cc}
2088 set_default ar as dep_cc ld
2089
2090 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2091 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2092
2093 add_cflags $extra_cflags
2094 add_asflags $extra_cflags
2095
2096 if test -n "$sysroot"; then
2097     case "$cc_type" in
2098         gcc|llvm_gcc|clang)
2099             add_cppflags --sysroot="$sysroot"
2100             add_ldflags --sysroot="$sysroot"
2101         ;;
2102         tms470)
2103             add_cppflags -I"$sysinclude"
2104             add_ldflags  --sysroot="$sysroot"
2105         ;;
2106     esac
2107 fi
2108
2109 if test "$cpu" = host; then
2110     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2111
2112     case "$cc_type" in
2113         gcc|llvm_gcc)
2114             check_native(){
2115                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2116                 sed -n "/$1=/{
2117                             s/.*$1=\\([^ ]*\\).*/\\1/
2118                             p
2119                             q
2120                         }" $TMPE
2121             }
2122             cpu=$(check_native -march || check_native -mcpu)
2123         ;;
2124     esac
2125
2126     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2127 fi
2128
2129 # Deal with common $arch aliases
2130 case "$arch" in
2131     arm*)
2132         arch="arm"
2133     ;;
2134     mips|mipsel|IP*)
2135         arch="mips"
2136     ;;
2137     mips64*)
2138         arch="mips"
2139         subarch="mips64"
2140     ;;
2141     parisc|hppa)
2142         arch="parisc"
2143     ;;
2144     parisc64|hppa64)
2145         arch="parisc"
2146         subarch="parisc64"
2147     ;;
2148     "Power Macintosh"|ppc|powerpc)
2149         arch="ppc"
2150     ;;
2151     ppc64|powerpc64)
2152         arch="ppc"
2153         subarch="ppc64"
2154     ;;
2155     s390|s390x)
2156         arch="s390"
2157     ;;
2158     sh4|sh)
2159         arch="sh4"
2160     ;;
2161     sun4u|sparc64)
2162         arch="sparc"
2163         subarch="sparc64"
2164     ;;
2165     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2166         arch="x86"
2167     ;;
2168 esac
2169
2170 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2171 enable $arch
2172
2173 # Add processor-specific flags
2174 if test "$cpu" = generic; then
2175     : do nothing
2176 elif enabled ppc; then
2177
2178     case $(tolower $cpu) in
2179         601|ppc601|powerpc601)
2180             cpuflags="-mcpu=601"
2181             disable altivec
2182         ;;
2183         603*|ppc603*|powerpc603*)
2184             cpuflags="-mcpu=603"
2185             disable altivec
2186         ;;
2187         604*|ppc604*|powerpc604*)
2188             cpuflags="-mcpu=604"
2189             disable altivec
2190         ;;
2191         g3|75*|ppc75*|powerpc75*)
2192             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2193             disable altivec
2194         ;;
2195         g4|745*|ppc745*|powerpc745*)
2196             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2197         ;;
2198         74*|ppc74*|powerpc74*)
2199             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2200         ;;
2201         g5|970|ppc970|powerpc970|power4*)
2202             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2203         ;;
2204         cell)
2205             cpuflags="-mcpu=cell"
2206             enable ldbrx
2207         ;;
2208         e500v2)
2209             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2210             disable altivec
2211         ;;
2212         e500)
2213             cpuflags="-mcpu=8540 -mhard-float"
2214             disable altivec
2215         ;;
2216     esac
2217
2218 elif enabled x86; then
2219
2220     case $cpu in
2221         i[345]86|pentium)
2222             cpuflags="-march=$cpu"
2223             disable mmx
2224         ;;
2225         # targets that do NOT support conditional mov (cmov)
2226         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2227             cpuflags="-march=$cpu"
2228             disable cmov
2229         ;;
2230         # targets that do support conditional mov (cmov)
2231         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2232             cpuflags="-march=$cpu"
2233             enable cmov
2234             enable fast_cmov
2235         ;;
2236         # targets that do support conditional mov but on which it's slow
2237         pentium4|pentium4m|prescott|nocona)
2238             cpuflags="-march=$cpu"
2239             enable cmov
2240             disable fast_cmov
2241         ;;
2242     esac
2243
2244 elif enabled sparc; then
2245
2246     case $cpu in
2247         niagara)
2248             cpuflags="-mcpu=$cpu"
2249             disable vis
2250         ;;
2251         sparc64)
2252             cpuflags="-mcpu=v9"
2253         ;;
2254     esac
2255
2256 elif enabled arm; then
2257
2258     case $cpu in
2259         armv*)
2260             cpuflags="-march=$cpu"
2261             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2262         ;;
2263         *)
2264             cpuflags="-mcpu=$cpu"
2265             case $cpu in
2266                 cortex-a*)                               subarch=armv7a  ;;
2267                 cortex-r*)                               subarch=armv7r  ;;
2268                 cortex-m*)                               subarch=armv7m  ;;
2269                 arm11*)                                  subarch=armv6   ;;
2270                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2271                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2272             esac
2273         ;;
2274     esac
2275
2276 elif enabled alpha; then
2277
2278     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2279
2280 elif enabled bfin; then
2281
2282     cpuflags="-mcpu=$cpu"
2283
2284 elif enabled mips; then
2285
2286     cpuflags="-march=$cpu"
2287
2288 elif enabled avr32; then
2289
2290     case $cpu in
2291         ap7[02]0[0-2])
2292             subarch="avr32_ap"
2293             cpuflags="-mpart=$cpu"
2294         ;;
2295         ap)
2296             subarch="avr32_ap"
2297             cpuflags="-march=$cpu"
2298         ;;
2299         uc3[ab]*)
2300             subarch="avr32_uc"
2301             cpuflags="-mcpu=$cpu"
2302         ;;
2303         uc)
2304             subarch="avr32_uc"
2305             cpuflags="-march=$cpu"
2306         ;;
2307     esac
2308
2309 fi
2310
2311 add_cflags $cpuflags
2312 add_asflags $cpuflags
2313
2314 # compiler sanity check
2315 check_exec <<EOF
2316 int main(void){ return 0; }
2317 EOF
2318 if test "$?" != 0; then
2319     echo "$cc is unable to create an executable file."
2320     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2321         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2322         echo "Only do this if you know what cross compiling means."
2323     fi
2324     die "C compiler test failed."
2325 fi
2326
2327 add_cppflags -D_ISOC99_SOURCE
2328 check_cflags -std=c99
2329 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2330 #include <stdlib.h>
2331 EOF
2332 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2333 #include <stdlib.h>
2334 EOF
2335
2336 check_host_cflags -std=c99
2337 check_host_cflags -Wall
2338
2339 case "$arch" in
2340     alpha|ia64|mips|parisc|sparc)
2341         spic=$shared
2342     ;;
2343     x86)
2344         subarch="x86_32"
2345         check_cc <<EOF && subarch="x86_64"
2346         int test[(int)sizeof(char*) - 7];
2347 EOF
2348         if test "$subarch" = "x86_64"; then
2349             spic=$shared
2350         fi
2351     ;;
2352 esac
2353
2354 enable $subarch
2355 enabled spic && enable pic
2356
2357 # OS specific
2358 case $target_os in
2359     haiku)
2360         prefix_default="/boot/common"
2361         network_extralibs="-lnetwork"
2362         host_libs=
2363         ;;
2364     sunos)
2365         FFSERVERLDFLAGS=""
2366         SHFLAGS='-shared -Wl,-h,$$(@F)'
2367         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2368         network_extralibs="-lsocket -lnsl"
2369         add_cppflags -D__EXTENSIONS__
2370         nm_opts='-P -g'
2371         ;;
2372     netbsd)
2373         disable symver
2374         oss_indev_extralibs="-lossaudio"
2375         oss_outdev_extralibs="-lossaudio"
2376         ;;
2377     openbsd)
2378         enable malloc_aligned
2379         # On OpenBSD 4.5. the compiler does not use PIC unless
2380         # explicitly using -fPIC. Libav builds fine without PIC,
2381         # however the generated executable will not do anything
2382         # (simply quits with exit-code 1, no crash, no output).
2383         # Thus explicitly enable PIC here.
2384         enable pic
2385         disable symver
2386         SHFLAGS='-shared'
2387         oss_indev_extralibs="-lossaudio"
2388         oss_outdev_extralibs="-lossaudio"
2389         ;;
2390     dragonfly)
2391         enable malloc_aligned
2392         disable symver
2393         ;;
2394     freebsd)
2395         enable malloc_aligned
2396         ;;
2397     bsd/os)
2398         add_extralibs -lpoll -lgnugetopt
2399         ;;
2400     darwin)
2401         enable malloc_aligned
2402         gas="gas-preprocessor.pl $cc"
2403         enabled ppc && add_asflags -force_cpusubtype_ALL
2404         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2405         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2406         add_ldflags -Wl,-dynamic,-search_paths_first
2407         SLIBSUF=".dylib"
2408         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2409         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2410         FFSERVERLDFLAGS=-Wl,-bind_at_load
2411         objformat="macho"
2412         enabled x86_64 && objformat="macho64"
2413         enabled_any pic shared ||
2414             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2415         ;;
2416     mingw32*)
2417         if test $target_os = "mingw32ce"; then
2418             disable network
2419         else
2420             target_os=mingw32
2421         fi
2422         LIBTARGET=i386
2423         if enabled x86_64; then
2424             enable malloc_aligned
2425             LIBTARGET="i386:x86-64"
2426         elif enabled arm; then
2427             LIBTARGET=arm-wince
2428         fi
2429         shlibdir_default="$bindir_default"
2430         SLIBPREF=""
2431         SLIBSUF=".dll"
2432         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2433         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2434         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2435         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2436             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2437             install -d "$(LIBDIR)"; \
2438             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2439         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2440         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2441         objformat="win32"
2442         dlltool="${cross_prefix}dlltool"
2443         enable dos_paths
2444         check_cflags -fno-common
2445         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2446                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2447                 die "ERROR: MinGW runtime version must be >= 3.15."
2448         add_cppflags -U__STRICT_ANSI__
2449         ;;
2450     cygwin*)
2451         target_os=cygwin
2452         shlibdir_default="$bindir_default"
2453         SLIBPREF="cyg"
2454         SLIBSUF=".dll"
2455         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2456         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2457         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2458         objformat="win32"
2459         enable dos_paths
2460         check_cflags -fno-common
2461         add_cppflags -U__STRICT_ANSI__
2462         ;;
2463     *-dos|freedos|opendos)
2464         network_extralibs="-lsocket"
2465         objformat="coff"
2466         enable dos_paths
2467         add_cppflags -U__STRICT_ANSI__
2468         ;;
2469     linux)
2470         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2471         enable dv1394
2472         ;;
2473     irix*)
2474         target_os=irix
2475         ranlib="echo ignoring ranlib"
2476         ;;
2477     os/2*)
2478         ln_s="cp -f"
2479         objformat="aout"
2480         add_cppflags -D_GNU_SOURCE
2481         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2482         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2483         FFSERVERLDFLAGS=""
2484         LIBSUF="_s.a"
2485         SLIBPREF=""
2486         SLIBSUF=".dll"
2487         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2488         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2489         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2490           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2491           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2492           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2493           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2494           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2495         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2496           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2497         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2498         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2499         enable dos_paths
2500         ;;
2501     gnu/kfreebsd)
2502         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2503         ;;
2504     gnu)
2505         ;;
2506     qnx)
2507         add_cppflags -D_QNX_SOURCE
2508         network_extralibs="-lsocket"
2509         ;;
2510     symbian)
2511         SLIBSUF=".dll"
2512         enable dos_paths
2513         add_cflags --include=$sysinclude/gcce/gcce.h
2514         ;;
2515     none)
2516         ;;
2517     *)
2518         die "Unknown OS '$target_os'."
2519         ;;
2520 esac
2521
2522 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$LIBAV_CONFIGURATION" >config.fate
2523
2524 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2525
2526 set_default $PATHS_LIST
2527
2528 # we need to build at least one lib type
2529 if ! enabled_any static shared; then
2530     cat <<EOF
2531 At least one library type must be built.
2532 Specify --enable-static to build the static libraries or --enable-shared to
2533 build the shared libraries as well. To only build the shared libraries specify
2534 --disable-static in addition to --enable-shared.
2535 EOF
2536     exit 1;
2537 fi
2538
2539 disabled static && LIBNAME=""
2540
2541 die_license_disabled() {
2542     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2543 }
2544
2545 die_license_disabled gpl libx264
2546 die_license_disabled gpl libxavs
2547 die_license_disabled gpl libxvid
2548 die_license_disabled gpl x11grab
2549
2550 die_license_disabled nonfree libfaac
2551
2552 die_license_disabled version3 libopencore_amrnb
2553 die_license_disabled version3 libopencore_amrwb
2554 die_license_disabled version3 libvo_aacenc
2555 die_license_disabled version3 libvo_amrwbenc
2556
2557 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2558
2559 disabled optimizations || check_cflags -fomit-frame-pointer
2560
2561 enable_pic() {
2562     enable pic
2563     add_cppflags -DPIC
2564     add_cflags   -fPIC
2565     add_asflags  -fPIC
2566 }
2567
2568 enabled pic && enable_pic
2569
2570 check_cc <<EOF || die "Symbol mangling check failed."
2571 int ff_extern;
2572 EOF
2573 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2574 extern_prefix=${sym%%ff_extern*}
2575
2576 check_cc <<EOF && enable inline_asm
2577 void foo(void) { __asm__ volatile ("" ::); }
2578 EOF
2579
2580 _restrict=
2581 for restrict_keyword in restrict __restrict__ __restrict; do
2582     check_cc <<EOF && _restrict=$restrict_keyword && break
2583 void foo(char * $restrict_keyword p);
2584 EOF
2585 done
2586
2587 check_cc <<EOF && enable attribute_packed
2588 struct { int x; } __attribute__((packed)) x;
2589 EOF
2590
2591 check_cc <<EOF && enable attribute_may_alias
2592 union { int x; } __attribute__((may_alias)) x;
2593 EOF
2594
2595 check_cc <<EOF || die "endian test failed"
2596 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2597 EOF
2598 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2599
2600 if enabled alpha; then
2601
2602     check_cflags -mieee
2603
2604 elif enabled arm; then
2605
2606     check_cflags -marm
2607     nogas=die
2608
2609     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2610         enable vfp_args
2611     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2612         case "${cross_prefix:-$cc}" in
2613             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2614             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2615 __asm__ (".eabi_attribute 28, 1");
2616 int main(void) { return 0; }
2617 EOF
2618         esac
2619         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2620     fi
2621
2622     # We have to check if pld is a nop and disable it.
2623     check_asm pld '"pld [r0]"'
2624
2625     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2626     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2627     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2628     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2629     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2630     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2631     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2632
2633     enabled_all armv6t2 shared !pic && enable_pic
2634
2635 elif enabled mips; then
2636
2637     check_asm loongson '"dmult.g $1, $2, $3"'
2638     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2639
2640 elif enabled ppc; then
2641
2642     enable local_aligned_8 local_aligned_16
2643
2644     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2645     check_asm ibm_asm   '"add 0, 0, 0"'
2646     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2647     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2648
2649     # AltiVec flags: The FSF version of GCC differs from the Apple version
2650     if enabled altivec; then
2651         nogas=warn
2652         check_cflags -maltivec -mabi=altivec &&
2653         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2654         check_cflags -faltivec
2655
2656         # check if our compiler supports Motorola AltiVec C API
2657         check_cc <<EOF || disable altivec
2658 $inc_altivec_h
2659 int main(void) {
2660     vector signed int v1, v2, v3;
2661     v1 = vec_add(v2,v3);
2662     return 0;
2663 }
2664 EOF
2665
2666         # check if our compiler supports braces for vector declarations
2667         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2668 $inc_altivec_h
2669 int main (void) { (vector int) {1}; return 0; }
2670 EOF
2671     fi
2672
2673 elif enabled sparc; then
2674
2675     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2676         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2677
2678 elif enabled x86; then
2679
2680     enable local_aligned_8 local_aligned_16
2681
2682     # check whether EBP is available on x86
2683     # As 'i' is stored on the stack, this program will crash
2684     # if the base pointer is used to access it because the
2685     # base pointer is cleared in the inline assembly code.
2686     check_exec_crash <<EOF && enable ebp_available
2687     volatile int i=0;
2688     __asm__ volatile (
2689         "xorl %%ebp, %%ebp"
2690     ::: "%ebp");
2691     return i;
2692 EOF
2693
2694     # check whether EBX is available on x86
2695     check_asm ebx_available '""::"b"(0)' &&
2696         check_asm ebx_available '"":::"%ebx"'
2697
2698     # check whether xmm clobbers are supported
2699     check_asm xmm_clobbers '"":::"%xmm0"'
2700
2701     # check whether more than 10 operands are supported
2702     check_cc <<EOF && enable ten_operands
2703 int main(void) {
2704     int x=0;
2705     __asm__ volatile(
2706         ""
2707         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2708     );
2709     return 0;
2710 }
2711 EOF
2712
2713     # check whether binutils is new enough to compile SSSE3/MMX2
2714     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2715     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2716
2717     check_asm bswap '"bswap %%eax" ::: "%eax"'
2718
2719     if ! disabled_any asm mmx yasm; then
2720         if check_cmd $yasmexe --version; then
2721             enabled x86_64 && yasm_extra="-m amd64"
2722             yasm_debug="-g dwarf2"
2723         elif check_cmd nasm -v; then
2724             yasmexe=nasm
2725             yasm_debug="-g -F dwarf"
2726             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2727         fi
2728
2729         YASMFLAGS="-f $objformat $yasm_extra"
2730         enabled pic               && append YASMFLAGS "-DPIC"
2731         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2732         case "$objformat" in
2733             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2734         esac
2735
2736         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2737             die "yasm not found, use --disable-yasm for a crippled build"
2738         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2739     fi
2740
2741     case "$cpu" in
2742         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2743             disable fast_clz
2744         ;;
2745     esac
2746
2747 fi
2748
2749 if enabled asm; then
2750     as=${gas:=$as}
2751     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2752         $nogas "GNU assembler not found, install gas-preprocessor"
2753 fi
2754
2755 check_ldflags -Wl,--as-needed
2756
2757 if check_func dlopen; then
2758     ldl=
2759 elif check_func dlopen -ldl; then
2760     ldl=-ldl
2761 fi
2762
2763 if enabled network; then
2764     check_type "sys/types.h sys/socket.h" socklen_t
2765     check_type netdb.h "struct addrinfo"
2766     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2767     check_type netinet/in.h "struct sockaddr_in6"
2768     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2769     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2770     # Prefer arpa/inet.h over winsock2
2771     if check_header arpa/inet.h ; then
2772         check_func closesocket
2773     elif check_header winsock2.h ; then
2774         check_func_headers winsock2.h closesocket -lws2 && \
2775             network_extralibs="-lws2" || \
2776         { check_func_headers winsock2.h closesocket -lws2_32 && \
2777             network_extralibs="-lws2_32"; }
2778         check_type ws2tcpip.h socklen_t
2779         check_type ws2tcpip.h "struct addrinfo"
2780         check_type ws2tcpip.h "struct ipv6_mreq"
2781         check_type ws2tcpip.h "struct sockaddr_in6"
2782         check_type ws2tcpip.h "struct sockaddr_storage"
2783         check_struct winsock2.h "struct sockaddr" sa_len
2784     else
2785         disable network
2786     fi
2787 fi
2788
2789 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2790 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2791
2792 check_func  fcntl
2793 check_func  fork
2794 check_func  getaddrinfo $network_extralibs
2795 check_func  gethrtime
2796 check_func  getrusage
2797 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2798 check_func  inet_aton $network_extralibs
2799 check_func  isatty
2800 check_func  localtime_r
2801 check_func  ${malloc_prefix}memalign            && enable memalign
2802 check_func  mkstemp
2803 check_func  mmap
2804 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2805 check_func  setrlimit
2806 check_func  strerror_r
2807 check_func  strtok_r
2808 check_func_headers io.h setmode
2809 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2810 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2811 check_func_headers windows.h GetProcessTimes
2812 check_func_headers windows.h MapViewOfFile
2813 check_func_headers windows.h VirtualAlloc
2814
2815 check_header dlfcn.h
2816 check_header dxva2api.h
2817 check_header malloc.h
2818 check_header poll.h
2819 check_header sys/mman.h
2820 check_header sys/resource.h
2821 check_header sys/select.h
2822 check_header vdpau/vdpau.h
2823 check_header vdpau/vdpau_x11.h
2824 check_header X11/extensions/XvMClib.h
2825
2826 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2827
2828 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2829 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2830
2831 # check for some common methods of building with pthread support
2832 # do this before the optional library checks as some of them require pthreads
2833 if ! disabled pthreads && ! enabled w32threads; then
2834     enable pthreads
2835     if check_func pthread_create; then
2836         :
2837     elif check_func pthread_create -pthread; then
2838         add_cflags -pthread
2839         add_extralibs -pthread
2840     elif check_func pthread_create -pthreads; then
2841         add_cflags -pthreads
2842         add_extralibs -pthreads
2843     elif check_func pthread_create -lpthreadGC2; then
2844         add_extralibs -lpthreadGC2
2845     elif ! check_lib pthread.h pthread_create -lpthread; then
2846         disable pthreads
2847     fi
2848 fi
2849
2850 for thread in $THREADS_LIST; do
2851     if enabled $thread; then
2852         test -n "$thread_type" &&
2853             die "ERROR: Only one thread type must be selected." ||
2854             thread_type="$thread"
2855     fi
2856 done
2857
2858 check_lib math.h sin -lm && LIBM="-lm"
2859 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2860
2861 check_mathfunc exp2
2862 check_mathfunc exp2f
2863 check_mathfunc llrint
2864 check_mathfunc llrintf
2865 check_mathfunc log2
2866 check_mathfunc log2f
2867 check_mathfunc lrint
2868 check_mathfunc lrintf
2869 check_mathfunc round
2870 check_mathfunc roundf
2871 check_mathfunc trunc
2872 check_mathfunc truncf
2873
2874 # these are off by default, so fail if requested and not available
2875 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2876 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2877 enabled libdirac   && require_pkg_config dirac                          \
2878     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2879     "dirac_decoder_init dirac_encoder_init"
2880 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2881 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2882 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2883 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2884 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2885 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2886 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2887 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2888 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2889 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2890 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2891 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2892 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2893 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2894 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2895 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2896 enabled libvpx     && {
2897     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2898                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2899     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2900                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2901 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2902                       { check_cpp_condition x264.h "X264_BUILD >= 115" ||
2903                         die "ERROR: libx264 version must be >= 0.115."; }
2904 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2905 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2906 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2907
2908 # libdc1394 check
2909 if enabled libdc1394; then
2910     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2911         enable libdc1394_2; } ||
2912     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2913         enable libdc1394_1; } ||
2914     die "ERROR: No version of libdc1394 found "
2915 fi
2916
2917 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2918     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2919     enable sdl &&
2920     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2921 fi
2922
2923 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2924
2925 check_header linux/fb.h
2926 check_header linux/videodev.h
2927 check_header linux/videodev2.h
2928 check_header sys/videoio.h
2929
2930 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2931 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2932 # w32api 3.12 had it defined wrong
2933 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2934
2935 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2936 { check_header dev/bktr/ioctl_meteor.h &&
2937   check_header dev/bktr/ioctl_bt848.h; } ||
2938 { check_header machine/ioctl_meteor.h &&
2939   check_header machine/ioctl_bt848.h; } ||
2940 { check_header dev/video/meteor/ioctl_meteor.h &&
2941   check_header dev/video/bktr/ioctl_bt848.h; } ||
2942 check_header dev/ic/bt8xx.h
2943
2944 check_header sndio.h
2945 check_header sys/soundcard.h
2946 check_header soundcard.h
2947
2948 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2949
2950 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
2951
2952 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2953
2954 enabled x11grab                         &&
2955 check_header X11/Xlib.h                 &&
2956 check_header X11/extensions/XShm.h      &&
2957 check_header X11/extensions/Xfixes.h    &&
2958 check_func XOpenDisplay -lX11           &&
2959 check_func XShmCreateImage -lX11 -lXext &&
2960 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2961
2962 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2963 check_cpp_condition \
2964     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
2965     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
2966       disable vdpau; }
2967 fi
2968
2969 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
2970
2971 # add some useful compiler flags if supported
2972 check_cflags -Wdeclaration-after-statement
2973 check_cflags -Wall
2974 check_cflags -Wno-parentheses
2975 check_cflags -Wno-switch
2976 check_cflags -Wdisabled-optimization
2977 check_cflags -Wpointer-arith
2978 check_cflags -Wredundant-decls
2979 check_cflags -Wno-pointer-sign
2980 check_cflags -Wcast-qual
2981 check_cflags -Wwrite-strings
2982 check_cflags -Wtype-limits
2983 check_cflags -Wundef
2984 check_cflags -Wmissing-prototypes
2985 enabled extra_warnings && check_cflags -Winline
2986
2987 # add some linker flags
2988 check_ldflags -Wl,--warn-common
2989 check_ldflags -Wl,-rpath-link,libpostproc -Wl,-rpath-link,libswscale -Wl,-rpath-link,libavfilter -Wl,-rpath-link,libavdevice -Wl,-rpath-link,libavformat -Wl,-rpath-link,libavcodec -Wl,-rpath-link,libavutil
2990 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
2991
2992 echo "X{};" > $TMPV
2993 if test_ldflags -Wl,--version-script,$TMPV; then
2994     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
2995     check_cc <<EOF && enable symver_asm_label
2996 void ff_foo(void) __asm__ ("av_foo@VERSION");
2997 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
2998 EOF
2999     check_cc <<EOF && enable symver_gnu_asm
3000 __asm__(".symver ff_foo,av_foo@VERSION");
3001 void ff_foo(void) {}
3002 EOF
3003 fi
3004
3005 if enabled small; then
3006     add_cflags $size_cflags
3007     optimizations="small"
3008 elif enabled optimizations; then
3009     add_cflags $speed_cflags
3010 else
3011     add_cflags $noopt_cflags
3012 fi
3013 check_cflags -fno-math-errno
3014 check_cflags -fno-signed-zeros
3015
3016 if enabled icc; then
3017     # Just warnings, no remarks
3018     check_cflags -w1
3019     # -wd: Disable following warnings
3020     # 144, 167, 556: -Wno-pointer-sign
3021     # 1292: attribute "foo" ignored
3022     # 10006: ignoring unknown option -fno-signed-zeros
3023     # 10148: ignoring unknown option -Wno-parentheses
3024     # 10156: ignoring option '-W'; no argument required
3025     check_cflags -wd144,167,556,1292,10006,10148,10156
3026     # 11030: Warning unknown option --as-needed
3027     # 10156: ignoring option '-export'; no argument required
3028     check_ldflags -wd10156,11030
3029     # Allow to compile with optimizations
3030     check_ldflags -march=$cpu
3031     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3032     enable ebp_available
3033     if enabled x86_32; then
3034         test ${icc_version%%.*} -ge 11 && \
3035             check_cflags -falign-stack=maintain-16-byte || \
3036             disable aligned_stack
3037     fi
3038 elif enabled ccc; then
3039     # disable some annoying warnings
3040     add_cflags -msg_disable cvtu32to64
3041     add_cflags -msg_disable embedcomment
3042     add_cflags -msg_disable needconstext
3043     add_cflags -msg_disable nomainieee
3044     add_cflags -msg_disable ptrmismatch1
3045     add_cflags -msg_disable unreachcode
3046 elif enabled gcc; then
3047     check_cflags -fno-tree-vectorize
3048     check_cflags -Werror=implicit-function-declaration
3049     check_cflags -Werror=missing-prototypes
3050 elif enabled llvm_gcc; then
3051     check_cflags -mllvm -stack-alignment=16
3052 elif enabled clang; then
3053     check_cflags -mllvm -stack-alignment=16
3054     check_cflags -Qunused-arguments
3055 elif enabled armcc; then
3056     # 2523: use of inline assembler is deprecated
3057     add_cflags -W${armcc_opt},--diag_suppress=2523
3058     add_cflags -W${armcc_opt},--diag_suppress=1207
3059     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3060     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3061 elif enabled tms470; then
3062     add_cflags -pds=824 -pds=837
3063 elif enabled pathscale; then
3064     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3065 fi
3066
3067 enabled_any $THREADS_LIST      && enable threads
3068
3069 check_deps $CONFIG_LIST       \
3070            $CONFIG_EXTRA      \
3071            $HAVE_LIST         \
3072            $DECODER_LIST      \
3073            $ENCODER_LIST      \
3074            $HWACCEL_LIST      \
3075            $PARSER_LIST       \
3076            $BSF_LIST          \
3077            $DEMUXER_LIST      \
3078            $MUXER_LIST        \
3079            $FILTER_LIST       \
3080            $INDEV_LIST        \
3081            $OUTDEV_LIST       \
3082            $PROTOCOL_LIST     \
3083            $ACODEC_TESTS      \
3084            $VCODEC_TESTS      \
3085            $LAVF_TESTS        \
3086            $LAVFI_TESTS       \
3087            $SEEK_TESTS        \
3088
3089 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3090
3091 ! enabled_any memalign posix_memalign malloc_aligned &&
3092     enabled_any $need_memalign && enable memalign_hack
3093
3094 echo "install prefix            $prefix"
3095 echo "source path               $source_path"
3096 echo "C compiler                $cc"
3097 echo "ARCH                      $arch ($cpu)"
3098 if test "$build_suffix" != ""; then
3099     echo "build suffix              $build_suffix"
3100 fi
3101 if test "$extra_version" != ""; then
3102     echo "version string suffix     $extra_version"
3103 fi
3104 echo "big-endian                ${bigendian-no}"
3105 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3106 if enabled x86; then
3107     echo "${yasmexe}                      ${yasm-no}"
3108     echo "MMX enabled               ${mmx-no}"
3109     echo "MMX2 enabled              ${mmx2-no}"
3110     echo "3DNow! enabled            ${amd3dnow-no}"
3111     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3112     echo "SSE enabled               ${sse-no}"
3113     echo "SSSE3 enabled             ${ssse3-no}"
3114     echo "AVX enabled               ${avx-no}"
3115     echo "CMOV enabled              ${cmov-no}"
3116     echo "CMOV is fast              ${fast_cmov-no}"
3117     echo "EBX available             ${ebx_available-no}"
3118     echo "EBP available             ${ebp_available-no}"
3119     echo "10 operands supported     ${ten_operands-no}"
3120 fi
3121 if enabled arm; then
3122     echo "ARMv5TE enabled           ${armv5te-no}"
3123     echo "ARMv6 enabled             ${armv6-no}"
3124     echo "ARMv6T2 enabled           ${armv6t2-no}"
3125     echo "ARM VFP enabled           ${armvfp-no}"
3126     echo "IWMMXT enabled            ${iwmmxt-no}"
3127     echo "NEON enabled              ${neon-no}"
3128 fi
3129 if enabled mips; then
3130     echo "MMI enabled               ${mmi-no}"
3131 fi
3132 if enabled ppc; then
3133     echo "AltiVec enabled           ${altivec-no}"
3134     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3135     echo "dcbzl available           ${dcbzl-no}"
3136 fi
3137 if enabled sparc; then
3138     echo "VIS enabled               ${vis-no}"
3139 fi
3140 echo "debug symbols             ${debug-no}"
3141 echo "optimizations             ${optimizations-no}"
3142 echo "static                    ${static-no}"
3143 echo "shared                    ${shared-no}"
3144 echo "postprocessing support    ${postproc-no}"
3145 echo "new filter support        ${avfilter-no}"
3146 echo "network support           ${network-no}"
3147 echo "threading support         ${thread_type-no}"
3148 echo "SDL support               ${sdl-no}"
3149 echo "Sun medialib support      ${mlib-no}"
3150 echo "AVISynth enabled          ${avisynth-no}"
3151 echo "frei0r enabled            ${frei0r-no}"
3152 echo "libdc1394 support         ${libdc1394-no}"
3153 echo "libdirac enabled          ${libdirac-no}"
3154 echo "libfaac enabled           ${libfaac-no}"
3155 echo "libgsm enabled            ${libgsm-no}"
3156 echo "libmp3lame enabled        ${libmp3lame-no}"
3157 echo "libnut enabled            ${libnut-no}"
3158 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3159 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3160 echo "libopencv support         ${libopencv-no}"
3161 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3162 echo "librtmp enabled           ${librtmp-no}"
3163 echo "libschroedinger enabled   ${libschroedinger-no}"
3164 echo "libspeex enabled          ${libspeex-no}"
3165 echo "libtheora enabled         ${libtheora-no}"
3166 echo "libva enabled             ${vaapi-no}"
3167 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3168 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3169 echo "libvorbis enabled         ${libvorbis-no}"
3170 echo "libvpx enabled            ${libvpx-no}"
3171 echo "libx264 enabled           ${libx264-no}"
3172 echo "libxavs enabled           ${libxavs-no}"
3173 echo "libxvid enabled           ${libxvid-no}"
3174 echo "zlib enabled              ${zlib-no}"
3175 echo "bzlib enabled             ${bzlib-no}"
3176 echo
3177
3178 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3179     echo "Enabled ${type}s:"
3180     eval list=\$$(toupper $type)_LIST
3181     print_enabled '_*' $list | sort | pr -r -3 -t
3182     echo
3183 done
3184
3185 license="LGPL version 2.1 or later"
3186 if enabled nonfree; then
3187     license="nonfree and unredistributable"
3188 elif enabled gplv3; then
3189     license="GPL version 3 or later"
3190 elif enabled lgplv3; then
3191     license="LGPL version 3 or later"
3192 elif enabled gpl; then
3193     license="GPL version 2 or later"
3194 fi
3195
3196 echo "License: $license"
3197
3198 echo "Creating config.mak and config.h..."
3199
3200 # build tree in object directory if source path is different from current one
3201 if enabled source_path_used; then
3202     DIRS="
3203         doc
3204         libavcodec
3205         libavcodec/$arch
3206         libavdevice
3207         libavfilter
3208         libavfilter/$arch
3209         libavformat
3210         libavutil
3211         libavutil/$arch
3212         libpostproc
3213         libswscale
3214         libswscale/$arch
3215         tests
3216         tools
3217     "
3218     FILES="
3219         Makefile
3220         common.mak
3221         subdir.mak
3222         doc/texi2pod.pl
3223         libavcodec/Makefile
3224         libavcodec/${arch}/Makefile
3225         libavdevice/Makefile
3226         libavfilter/Makefile
3227         libavfilter/${arch}/Makefile
3228         libavformat/Makefile
3229         libavutil/Makefile
3230         libpostproc/Makefile
3231         libswscale/Makefile
3232     "
3233     map 'mkdir -p $v' $DIRS;
3234     map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
3235 fi
3236
3237 config_files="$TMPH config.mak"
3238
3239 cat > config.mak <<EOF
3240 # Automatically generated by configure - do not modify!
3241 ifndef LIBAV_CONFIG_MAK
3242 LIBAV_CONFIG_MAK=1
3243 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3244 prefix=$prefix
3245 LIBDIR=\$(DESTDIR)$libdir
3246 SHLIBDIR=\$(DESTDIR)$shlibdir
3247 INCDIR=\$(DESTDIR)$incdir
3248 BINDIR=\$(DESTDIR)$bindir
3249 DATADIR=\$(DESTDIR)$datadir
3250 MANDIR=\$(DESTDIR)$mandir
3251 SRC_PATH="$source_path"
3252 SRC_PATH_BARE=$source_path
3253 CC_IDENT=$cc_ident
3254 ARCH=$arch
3255 CC=$cc
3256 AS=$as
3257 LD=$ld
3258 DEPCC=$dep_cc
3259 YASM=$yasmexe
3260 YASMDEP=$yasmexe
3261 AR=$ar
3262 RANLIB=$ranlib
3263 LN_S=$ln_s
3264 CPPFLAGS=$CPPFLAGS
3265 CFLAGS=$CFLAGS
3266 ASFLAGS=$ASFLAGS
3267 CC_O=$CC_O
3268 DLLTOOL=$dlltool
3269 LDFLAGS=$LDFLAGS
3270 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3271 SHFLAGS=$SHFLAGS
3272 YASMFLAGS=$YASMFLAGS
3273 BUILDSUF=$build_suffix
3274 FULLNAME=$FULLNAME
3275 LIBPREF=$LIBPREF
3276 LIBSUF=$LIBSUF
3277 LIBNAME=$LIBNAME
3278 SLIBPREF=$SLIBPREF
3279 SLIBSUF=$SLIBSUF
3280 EXESUF=$EXESUF
3281 EXTRA_VERSION=$extra_version
3282 DEPFLAGS=$DEPFLAGS
3283 CCDEP=$CCDEP
3284 ASDEP=$ASDEP
3285 CC_DEPFLAGS=$CC_DEPFLAGS
3286 AS_DEPFLAGS=$AS_DEPFLAGS
3287 HOSTCC=$host_cc
3288 HOSTCFLAGS=$host_cflags
3289 HOSTEXESUF=$HOSTEXESUF
3290 HOSTLDFLAGS=$host_ldflags
3291 HOSTLIBS=$host_libs
3292 TARGET_EXEC=$target_exec
3293 TARGET_PATH=$target_path
3294 SDL_LIBS=$sdl_libs
3295 SDL_CFLAGS=$sdl_cflags
3296 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3297 EXTRALIBS=$extralibs
3298 INSTALL=install
3299 LIBTARGET=${LIBTARGET}
3300 SLIBNAME=${SLIBNAME}
3301 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3302 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3303 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3304 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3305 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3306 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3307 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3308 EOF
3309
3310 get_version(){
3311     name=$1
3312     file=$source_path/$2
3313     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3314     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3315     lcname=$(tolower $name)
3316     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3317     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3318 }
3319
3320 get_version LIBSWSCALE  libswscale/swscale.h
3321 get_version LIBPOSTPROC libpostproc/postprocess.h
3322 get_version LIBAVCODEC  libavcodec/version.h
3323 get_version LIBAVDEVICE libavdevice/avdevice.h
3324 get_version LIBAVFORMAT libavformat/version.h
3325 get_version LIBAVUTIL   libavutil/avutil.h
3326 get_version LIBAVFILTER libavfilter/avfilter.h
3327
3328 cat > $TMPH <<EOF
3329 /* Automatically generated by configure - do not modify! */
3330 #ifndef LIBAV_CONFIG_H
3331 #define LIBAV_CONFIG_H
3332 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3333 #define LIBAV_LICENSE "$(c_escape $license)"
3334 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3335 #define CC_TYPE "$cc_type"
3336 #define CC_VERSION $cc_version
3337 #define restrict $_restrict
3338 #define EXTERN_PREFIX "${extern_prefix}"
3339 #define EXTERN_ASM ${extern_prefix}
3340 #define SLIBSUF "$SLIBSUF"
3341 EOF
3342
3343 test -n "$malloc_prefix" &&
3344     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3345
3346 if enabled small || disabled optimizations; then
3347     echo "#undef  av_always_inline"  >> $TMPH
3348     if enabled small; then
3349         echo "#define av_always_inline inline"  >> $TMPH
3350     else
3351         echo "#define av_always_inline av_unused"  >> $TMPH
3352     fi
3353 fi
3354
3355 if enabled yasm; then
3356     append config_files $TMPASM
3357     printf '' >$TMPASM
3358 fi
3359
3360 print_config ARCH_   "$config_files" $ARCH_LIST
3361 print_config HAVE_   "$config_files" $HAVE_LIST
3362 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3363                                      $CONFIG_EXTRA      \
3364                                      $DECODER_LIST      \
3365                                      $ENCODER_LIST      \
3366                                      $HWACCEL_LIST      \
3367                                      $PARSER_LIST       \
3368                                      $BSF_LIST          \
3369                                      $DEMUXER_LIST      \
3370                                      $MUXER_LIST        \
3371                                      $FILTER_LIST       \
3372                                      $PROTOCOL_LIST     \
3373                                      $INDEV_LIST        \
3374                                      $OUTDEV_LIST       \
3375
3376 cat >>config.mak <<EOF
3377 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3378 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3379 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3380 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3381 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3382 EOF
3383
3384 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3385 echo "endif # LIBAV_CONFIG_MAK" >> config.mak
3386
3387 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3388 cp_if_changed $TMPH config.h
3389 touch .config
3390
3391 enabled yasm && cp_if_changed $TMPASM config.asm
3392
3393 cat > $TMPH <<EOF
3394 /* Generated by ffconf */
3395 #ifndef AVUTIL_AVCONFIG_H
3396 #define AVUTIL_AVCONFIG_H
3397 EOF
3398
3399 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3400
3401 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3402
3403 cp_if_changed $TMPH libavutil/avconfig.h
3404
3405 test -n "$WARNINGS" && printf "\n$WARNINGS"
3406
3407 # build pkg-config files
3408
3409 pkgconfig_generate(){
3410 name=$1
3411 shortname=${name#lib}${build_suffix}
3412 comment=$2
3413 version=$3
3414 libs=$4
3415 requires=$5
3416 enabled ${name#lib} || return 0
3417 cat <<EOF > $name/$name.pc
3418 prefix=$prefix
3419 exec_prefix=\${prefix}
3420 libdir=$libdir
3421 includedir=$incdir
3422
3423 Name: $name
3424 Description: $comment
3425 Version: $version
3426 Requires: $(enabled shared || echo $requires)
3427 Requires.private: $(enabled shared && echo $requires)
3428 Conflicts:
3429 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3430 Libs.private: $(enabled shared && echo $libs)
3431 Cflags: -I\${includedir}
3432 EOF
3433 cat <<EOF > $name/$name-uninstalled.pc
3434 prefix=
3435 exec_prefix=
3436 libdir=\${pcfiledir}
3437 includedir=${source_path}
3438
3439 Name: $name
3440 Description: $comment
3441 Version: $version
3442 Requires: $requires
3443 Conflicts:
3444 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3445 Cflags: -I\${includedir}
3446 EOF
3447 }
3448
3449 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3450 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3451 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3452 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3453 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3454 pkgconfig_generate libpostproc "Libav post processing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3455 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"