git.sesse.net Git - ffmpeg/blob - 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/avconv]
  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-avconv         disable avconv build
  85   --disable-avplay         disable avplay build
  86   --disable-avprobe        disable avprobe build
  87   --disable-avserver       disable avserver build
  88   --disable-avdevice       disable libavdevice build
  89   --disable-avcodec        disable libavcodec build
  90   --disable-avformat       disable libavformat build
  91   --disable-swscale        disable libswscale build
  92   --disable-postproc       disable libpostproc build
  93   --disable-avfilter       disable video filter support [no]
  94   --disable-pthreads       disable pthreads [auto]
  95   --enable-w32threads      use Win32 threads [no]
  96   --enable-x11grab         enable X11 grabbing [no]
  97   --disable-network        disable network support [no]
  98   --enable-gray            enable full grayscale support (slower color)
  99   --disable-swscale-alpha  disable alpha channel support in swscale
 100   --disable-fastdiv        disable table-based division
 101   --enable-small           optimize for size instead of speed
 102   --disable-aandct         disable AAN DCT code
 103   --disable-dct            disable DCT code
 104   --disable-fft            disable FFT code
 105   --disable-golomb         disable Golomb code
 106   --disable-huffman        disable Huffman code
 107   --disable-lpc            disable LPC code
 108   --disable-mdct           disable MDCT code
 109   --disable-rdft           disable RDFT code
 110   --enable-vaapi           enable VAAPI code
 111   --enable-vdpau           enable VDPAU code
 112   --disable-dxva2          disable DXVA2 code
 113   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 114   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 115   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 116   --disable-everything     disable all components listed below
 117   --disable-encoder=NAME   disable encoder NAME
 118   --enable-encoder=NAME    enable encoder NAME
 119   --disable-encoders       disable all encoders
 120   --disable-decoder=NAME   disable decoder NAME
 121   --enable-decoder=NAME    enable decoder NAME
 122   --disable-decoders       disable all decoders
 123   --disable-hwaccel=NAME   disable hwaccel NAME
 124   --enable-hwaccel=NAME    enable hwaccel NAME
 125   --disable-hwaccels       disable all hwaccels
 126   --disable-muxer=NAME     disable muxer NAME
 127   --enable-muxer=NAME      enable muxer NAME
 128   --disable-muxers         disable all muxers
 129   --disable-demuxer=NAME   disable demuxer NAME
 130   --enable-demuxer=NAME    enable demuxer NAME
 131   --disable-demuxers       disable all demuxers
 132   --enable-parser=NAME     enable parser NAME
 133   --disable-parser=NAME    disable parser NAME
 134   --disable-parsers        disable all parsers
 135   --enable-bsf=NAME        enable bitstream filter NAME
 136   --disable-bsf=NAME       disable bitstream filter NAME
 137   --disable-bsfs           disable all bitstream filters
 138   --enable-protocol=NAME   enable protocol NAME
 139   --disable-protocol=NAME  disable protocol NAME
 140   --disable-protocols      disable all protocols
 141   --disable-indev=NAME     disable input device NAME
 142   --disable-outdev=NAME    disable output device NAME
 143   --disable-indevs         disable input devices
 144   --disable-outdevs        disable output devices
 145   --disable-devices        disable all devices
 146   --enable-filter=NAME     enable filter NAME
 147   --disable-filter=NAME    disable filter NAME
 148   --disable-filters        disable all filters
 149   --list-decoders          show all available decoders
 150   --list-encoders          show all available encoders
 151   --list-hwaccels          show all available hardware accelerators
 152   --list-muxers            show all available muxers
 153   --list-demuxers          show all available demuxers
 154   --list-parsers           show all available parsers
 155   --list-protocols         show all available protocols
 156   --list-bsfs              show all available bitstream filters
 157   --list-indevs            show all available input devices
 158   --list-outdevs           show all available output devices
 159   --list-filters           show all available filters
 160
 161 External library support:
 162   --enable-avisynth        enable reading of AVISynth script files [no]
 163   --enable-bzlib           enable bzlib [autodetect]
 164   --enable-frei0r          enable frei0r video filtering
 165   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 166   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 167   --enable-libopencv       enable video filtering via libopencv [no]
 168   --enable-libcdio         enable audio CD grabbing with libcdio
 169   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 170                            and libraw1394 [no]
 171   --enable-libdirac        enable Dirac support via libdirac [no]
 172   --enable-libfaac         enable FAAC support via libfaac [no]
 173   --enable-libfreetype     enable libfreetype [no]
 174   --enable-libgsm          enable GSM support via libgsm [no]
 175   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 176   --enable-libnut          enable NUT (de)muxing via libnut,
 177                            native (de)muxer exists [no]
 178   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
 179   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 180   --enable-libschroedinger enable Dirac support via libschroedinger [no]
 181   --enable-libspeex        enable Speex support via libspeex [no]
 182   --enable-libtheora       enable Theora encoding via libtheora [no]
 183   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 184   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 185   --enable-libvorbis       enable Vorbis encoding via libvorbis,
 186                            native implementation exists [no]
 187   --enable-libvpx          enable VP8 support via libvpx [no]
 188   --enable-libx264         enable H.264 encoding via x264 [no]
 189   --enable-libxavs         enable AVS encoding via xavs [no]
 190   --enable-libxvid         enable Xvid encoding via xvidcore,
 191                            native MPEG-4/Xvid encoder exists [no]
 192   --enable-mlib            enable Sun medialib [no]
 193   --enable-zlib            enable zlib [autodetect]
 194
 195 Advanced options (experts only):
 196   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 197   --enable-cross-compile   assume a cross-compiler is used
 198   --sysroot=PATH           root of cross-build tree
 199   --sysinclude=PATH        location of cross-build system headers
 200   --target-os=OS           compiler targets OS [$target_os]
 201   --target-exec=CMD        command to run executables on target
 202   --target-path=DIR        path to view of build directory on target
 203   --nm=NM                  use nm tool
 204   --ar=AR                  use archive tool AR [$ar_default]
 205   --as=AS                  use assembler AS [$as_default]
 206   --cc=CC                  use C compiler CC [$cc_default]
 207   --ld=LD                  use linker LD
 208   --host-cc=HOSTCC         use host C compiler HOSTCC
 209   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 210   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 211   --host-libs=HLIBS        use libs HLIBS when linking for host
 212   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 213   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 214   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 215   --extra-version=STRING   version string suffix []
 216   --build-suffix=SUFFIX    library name suffix []
 217   --arch=ARCH              select architecture [$arch]
 218   --cpu=CPU                select the minimum required CPU (affects
 219                            instruction selection, may crash on older CPUs)
 220   --disable-asm            disable all assembler optimizations
 221   --disable-altivec        disable AltiVec optimizations
 222   --disable-amd3dnow       disable 3DNow! optimizations
 223   --disable-amd3dnowext    disable 3DNow! extended optimizations
 224   --disable-mmx            disable MMX optimizations
 225   --disable-mmx2           disable MMX2 optimizations
 226   --disable-sse            disable SSE optimizations
 227   --disable-ssse3          disable SSSE3 optimizations
 228   --disable-avx            disable AVX optimizations
 229   --disable-armv5te        disable armv5te optimizations
 230   --disable-armv6          disable armv6 optimizations
 231   --disable-armv6t2        disable armv6t2 optimizations
 232   --disable-armvfp         disable ARM VFP optimizations
 233   --disable-iwmmxt         disable iwmmxt optimizations
 234   --disable-mmi            disable MMI optimizations
 235   --disable-neon           disable neon optimizations
 236   --disable-vis            disable VIS optimizations
 237   --disable-yasm           disable use of yasm assembler
 238   --enable-pic             build position-independent code
 239   --malloc-prefix=PFX      prefix malloc and related names with PFX
 240   --enable-sram            allow use of on-chip SRAM
 241   --disable-symver         disable symbol versioning
 242   --optflags               override optimization-related compiler flags
 243
 244 Developer options (useful when working on Libav itself):
 245   --disable-debug          disable debugging symbols
 246   --enable-debug=LEVEL     set the debug level [$debuglevel]
 247   --disable-optimizations  disable compiler optimizations
 248   --enable-extra-warnings  enable more compiler warnings
 249   --samples=PATH           location of test samples for FATE, if not set use
 250                            \$FATE_SAMPLES at make invocation time.
 251
 252 NOTE: Object files are built at the place where configure is launched.
 253 EOF
 254   exit 0
 255 }
 256
 257 quotes='""'
 258
 259 log(){
 260     echo "$@" >> $logfile
 261 }
 262
 263 log_file(){
 264     log BEGIN $1
 265     pr -n -t $1 >> $logfile
 266     log END $1
 267 }
 268
 269 echolog(){
 270     log "$@"
 271     echo "$@"
 272 }
 273
 274 warn(){
 275     log "WARNING: $*"
 276     WARNINGS="${WARNINGS}WARNING: $*\n"
 277 }
 278
 279 die(){
 280     echolog "$@"
 281     cat <<EOF
 282
 283 If you think configure made a mistake, make sure you are using the latest
 284 version from Git.  If the latest version fails, report the problem to the
 285 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
 286 EOF
 287     if disabled logging; then
 288         cat <<EOF
 289 Rerun configure with logging enabled (do not use --disable-logging), and
 290 include the log this produces with your report.
 291 EOF
 292     else
 293 cat <<EOF
 294 Include the log file "$logfile" produced by configure as this will help
 295 solving the problem.
 296 EOF
 297     fi
 298     exit 1
 299 }
 300
 301 # Avoid locale weirdness, besides we really just want to translate ASCII.
 302 toupper(){
 303     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 304 }
 305
 306 tolower(){
 307     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 308 }
 309
 310 c_escape(){
 311     echo "$*" | sed 's/["\\]/\\\0/g'
 312 }
 313
 314 sh_quote(){
 315     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 316     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 317     echo "$v"
 318 }
 319
 320 cleanws(){
 321     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 322 }
 323
 324 filter(){
 325     pat=$1
 326     shift
 327     for v; do
 328         eval "case $v in $pat) echo $v ;; esac"
 329     done
 330 }
 331
 332 filter_out(){
 333     pat=$1
 334     shift
 335     for v; do
 336         eval "case $v in $pat) ;; *) echo $v ;; esac"
 337     done
 338 }
 339
 340 map(){
 341     m=$1
 342     shift
 343     for v; do eval $m; done
 344 }
 345
 346 set_all(){
 347     value=$1
 348     shift
 349     for var in $*; do
 350         eval $var=$value
 351     done
 352 }
 353
 354 set_weak(){
 355     value=$1
 356     shift
 357     for var; do
 358         eval : \${$var:=$value}
 359     done
 360 }
 361
 362 set_safe(){
 363     var=$1
 364     shift
 365     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 366 }
 367
 368 get_safe(){
 369     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 370 }
 371
 372 pushvar(){
 373     for var in $*; do
 374         eval level=\${${var}_level:=0}
 375         eval ${var}_${level}="\$$var"
 376         eval ${var}_level=$(($level+1))
 377     done
 378 }
 379
 380 popvar(){
 381     for var in $*; do
 382         eval level=\${${var}_level:-0}
 383         test $level = 0 && continue
 384         eval level=$(($level-1))
 385         eval $var="\${${var}_${level}}"
 386         eval ${var}_level=$level
 387         eval unset ${var}_${level}
 388     done
 389 }
 390
 391 enable(){
 392     set_all yes $*
 393 }
 394
 395 disable(){
 396     set_all no $*
 397 }
 398
 399 enable_weak(){
 400     set_weak yes $*
 401 }
 402
 403 disable_weak(){
 404     set_weak no $*
 405 }
 406
 407 enable_safe(){
 408     for var; do
 409         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 410     done
 411 }
 412
 413 disable_safe(){
 414     for var; do
 415         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 416     done
 417 }
 418
 419 do_enable_deep(){
 420     for var; do
 421         enabled $var && continue
 422         eval sel="\$${var}_select"
 423         eval sgs="\$${var}_suggest"
 424         pushvar var sgs
 425         enable_deep $sel
 426         popvar sgs
 427         enable_deep_weak $sgs
 428         popvar var
 429     done
 430 }
 431
 432 enable_deep(){
 433     do_enable_deep $*
 434     enable $*
 435 }
 436
 437 enable_deep_weak(){
 438     do_enable_deep $*
 439     enable_weak $*
 440 }
 441
 442 enabled(){
 443     test "${1#!}" = "$1" && op== || op=!=
 444     eval test "x\$${1#!}" $op "xyes"
 445 }
 446
 447 disabled(){
 448     test "${1#!}" = "$1" && op== || op=!=
 449     eval test "x\$${1#!}" $op "xno"
 450 }
 451
 452 enabled_all(){
 453     for opt; do
 454         enabled $opt || return 1
 455     done
 456 }
 457
 458 disabled_all(){
 459     for opt; do
 460         disabled $opt || return 1
 461     done
 462 }
 463
 464 enabled_any(){
 465     for opt; do
 466         enabled $opt && return 0
 467     done
 468 }
 469
 470 disabled_any(){
 471     for opt; do
 472         disabled $opt && return 0
 473     done
 474     return 1
 475 }
 476
 477 set_default(){
 478     for opt; do
 479         eval : \${$opt:=\$${opt}_default}
 480     done
 481 }
 482
 483 is_in(){
 484     value=$1
 485     shift
 486     for var in $*; do
 487         [ $var = $value ] && return 0
 488     done
 489     return 1
 490 }
 491
 492 check_deps(){
 493     for cfg; do
 494         cfg="${cfg#!}"
 495         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 496         disabled ${cfg}_checking && continue
 497         enable ${cfg}_checking
 498
 499         eval dep_all="\$${cfg}_deps"
 500         eval dep_any="\$${cfg}_deps_any"
 501         eval dep_sel="\$${cfg}_select"
 502         eval dep_sgs="\$${cfg}_suggest"
 503         eval dep_ifa="\$${cfg}_if"
 504         eval dep_ifn="\$${cfg}_if_any"
 505
 506         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 507         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 508         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 509
 510         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 511         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 512         enabled_all  $dep_all || disable $cfg
 513         enabled_any  $dep_any || disable $cfg
 514         disabled_any $dep_sel && disable $cfg
 515
 516         if enabled $cfg; then
 517             eval dep_extralibs="\$${cfg}_extralibs"
 518             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 519             enable_deep $dep_sel
 520             enable_deep_weak $dep_sgs
 521         fi
 522
 523         disable ${cfg}_checking
 524     done
 525 }
 526
 527 print_config_h(){
 528     enabled $1 && v=1 || v=0
 529     echo "#define $2 $v"
 530 }
 531
 532 print_config_mak(){
 533     enabled $1 && v= || v=!
 534     echo "$v$2=yes"
 535 }
 536
 537 print_config_asm(){
 538     enabled $1 && echo "%define $2"
 539 }
 540
 541 print_config(){
 542     pfx=$1
 543     files=$2
 544     shift 2
 545     for cfg; do
 546         ucname="$(toupper $cfg)"
 547         for f in $files; do
 548             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
 549         done
 550     done
 551 }
 552
 553 print_enabled(){
 554     test "$1" = -n && end=" " && shift || end="\n"
 555     suf=$1
 556     shift
 557     for v; do
 558         enabled $v && printf "%s$end" ${v%$suf};
 559     done
 560 }
 561
 562 append(){
 563     var=$1
 564     shift
 565     eval "$var=\"\$$var $*\""
 566 }
 567
 568 prepend(){
 569     var=$1
 570     shift
 571     eval "$var=\"$* \$$var\""
 572 }
 573
 574 add_cppflags(){
 575     append CPPFLAGS $($filter_cppflags "$@")
 576 }
 577
 578 add_cflags(){
 579     append CFLAGS $($filter_cflags "$@")
 580 }
 581
 582 add_asflags(){
 583     append ASFLAGS $($filter_asflags "$@")
 584 }
 585
 586 add_ldflags(){
 587     append LDFLAGS "$@"
 588 }
 589
 590 add_extralibs(){
 591     prepend extralibs "$@"
 592 }
 593
 594 check_cmd(){
 595     log "$@"
 596     "$@" >> $logfile 2>&1
 597 }
 598
 599 check_cc(){
 600     log check_cc "$@"
 601     cat > $TMPC
 602     log_file $TMPC
 603     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
 604 }
 605
 606 check_cpp(){
 607     log check_cpp "$@"
 608     cat > $TMPC
 609     log_file $TMPC
 610     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
 611 }
 612
 613 check_as(){
 614     log check_as "$@"
 615     cat > $TMPC
 616     log_file $TMPC
 617     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
 618 }
 619
 620 check_asm(){
 621     log check_asm "$@"
 622     name="$1"
 623     code="$2"
 624     shift 2
 625     disable $name
 626     check_as "$@" <<EOF && enable $name
 627 void foo(void){ __asm__ volatile($code); }
 628 EOF
 629 }
 630
 631 check_yasm(){
 632     log check_yasm "$@"
 633     echo "$1" > $TMPS
 634     log_file $TMPS
 635     shift 1
 636     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 637 }
 638
 639 check_ld(){
 640     log check_ld "$@"
 641     flags=''
 642     libs=''
 643     for f; do
 644         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
 645     done
 646     check_cc $($filter_cflags $flags) || return
 647     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
 648 }
 649
 650 check_cppflags(){
 651     log check_cppflags "$@"
 652     set -- $($filter_cppflags "$@")
 653     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 654 int x;
 655 EOF
 656 }
 657
 658 check_cflags(){
 659     log check_cflags "$@"
 660     set -- $($filter_cflags "$@")
 661     check_cc "$@" <<EOF && append CFLAGS "$@"
 662 int x;
 663 EOF
 664 }
 665
 666 test_ldflags(){
 667     log test_ldflags "$@"
 668     check_ld "$@" <<EOF
 669 int main(void){ return 0; }
 670 EOF
 671 }
 672
 673 check_ldflags(){
 674     log check_ldflags "$@"
 675     test_ldflags "$@" && add_ldflags "$@"
 676 }
 677
 678 check_header(){
 679     log check_header "$@"
 680     header=$1
 681     shift
 682     disable_safe $header
 683     check_cpp "$@" <<EOF && enable_safe $header
 684 #include <$header>
 685 int x;
 686 EOF
 687 }
 688
 689 check_func(){
 690     log check_func "$@"
 691     func=$1
 692     shift
 693     disable $func
 694     check_ld "$@" <<EOF && enable $func
 695 extern int $func();
 696 int main(void){ $func(); }
 697 EOF
 698 }
 699
 700 check_mathfunc(){
 701     log check_mathfunc "$@"
 702     func=$1
 703     shift
 704     disable $func
 705     check_ld "$@" <<EOF && enable $func
 706 #include <math.h>
 707 float foo(float f) { return $func(f); }
 708 int main(void){ return 0; }
 709 EOF
 710 }
 711
 712 check_func_headers(){
 713     log check_func_headers "$@"
 714     headers=$1
 715     funcs=$2
 716     shift 2
 717     {
 718         for hdr in $headers; do
 719             echo "#include <$hdr>"
 720         done
 721         for func in $funcs; do
 722             echo "long check_$func(void) { return (long) $func; }"
 723         done
 724         echo "int main(void) { return 0; }"
 725     } | check_ld "$@" && enable $funcs && enable_safe $headers
 726 }
 727
 728 check_cpp_condition(){
 729     log check_cpp_condition "$@"
 730     header=$1
 731     condition=$2
 732     shift 2
 733     check_cpp $($filter_cppflags "$@") <<EOF
 734 #include <$header>
 735 #if !($condition)
 736 #error "unsatisfied condition: $condition"
 737 #endif
 738 EOF
 739 }
 740
 741 check_lib(){
 742     log check_lib "$@"
 743     header="$1"
 744     func="$2"
 745     shift 2
 746     check_header $header && check_func $func "$@" && add_extralibs "$@"
 747 }
 748
 749 check_lib2(){
 750     log check_lib2 "$@"
 751     headers="$1"
 752     funcs="$2"
 753     shift 2
 754     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 755 }
 756
 757 check_pkg_config(){
 758     log check_pkg_config "$@"
 759     pkg="$1"
 760     headers="$2"
 761     funcs="$3"
 762     shift 3
 763     $pkg_config --exists $pkg || return
 764     pkg_cflags=$($pkg_config --cflags $pkg)
 765     pkg_libs=$($pkg_config --libs $pkg)
 766     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 767         set_safe ${pkg}_cflags $pkg_cflags   &&
 768         set_safe ${pkg}_libs   $pkg_libs
 769 }
 770
 771 check_exec(){
 772     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 773 }
 774
 775 check_exec_crash(){
 776     code=$(cat)
 777
 778     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 779     # are safe but may not be available everywhere.  Thus we use
 780     # raise(SIGTERM) instead.  The check is run in a subshell so we
 781     # can redirect the "Terminated" message from the shell.  SIGBUS
 782     # is not defined by standard C so it is used conditionally.
 783
 784     (check_exec "$@") >> $logfile 2>&1 <<EOF
 785 #include <signal.h>
 786 static void sighandler(int sig){
 787     raise(SIGTERM);
 788 }
 789 int main(void){
 790     signal(SIGILL, sighandler);
 791     signal(SIGFPE, sighandler);
 792     signal(SIGSEGV, sighandler);
 793 #ifdef SIGBUS
 794     signal(SIGBUS, sighandler);
 795 #endif
 796     { $code }
 797 }
 798 EOF
 799 }
 800
 801 check_type(){
 802     log check_type "$@"
 803     headers=$1
 804     type=$2
 805     shift 2
 806     disable_safe "$type"
 807     incs=""
 808     for hdr in $headers; do
 809         incs="$incs
 810 #include <$hdr>"
 811     done
 812     check_cc "$@" <<EOF && enable_safe "$type"
 813 $incs
 814 $type v;
 815 EOF
 816 }
 817
 818 check_struct(){
 819     log check_type "$@"
 820     headers=$1
 821     struct=$2
 822     member=$3
 823     shift 3
 824     disable_safe "${struct}_${member}"
 825     incs=""
 826     for hdr in $headers; do
 827         incs="$incs
 828 #include <$hdr>"
 829     done
 830     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
 831 $incs
 832 const void *p = &(($struct *)0)->$member;
 833 EOF
 834 }
 835
 836 require(){
 837     name="$1"
 838     header="$2"
 839     func="$3"
 840     shift 3
 841     check_lib $header $func "$@" || die "ERROR: $name not found"
 842 }
 843
 844 require2(){
 845     name="$1"
 846     headers="$2"
 847     func="$3"
 848     shift 3
 849     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
 850 }
 851
 852 require_pkg_config(){
 853     pkg="$1"
 854     check_pkg_config "$@" || die "ERROR: $pkg not found"
 855     add_cflags    $(get_safe ${pkg}_cflags)
 856     add_extralibs $(get_safe ${pkg}_libs)
 857 }
 858
 859 check_host_cc(){
 860     log check_host_cc "$@"
 861     cat > $TMPC
 862     log_file $TMPC
 863     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
 864 }
 865
 866 check_host_cflags(){
 867     log check_host_cflags "$@"
 868     check_host_cc "$@" <<EOF && append host_cflags "$@"
 869 int x;
 870 EOF
 871 }
 872
 873 apply(){
 874     file=$1
 875     shift
 876     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
 877 }
 878
 879 cp_if_changed(){
 880     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
 881     mkdir -p "$(dirname $2)"
 882     cp -f "$1" "$2"
 883 }
 884
 885 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
 886 # system-dependent things.
 887
 888 COMPONENT_LIST="
 889     bsfs
 890     decoders
 891     demuxers
 892     encoders
 893     filters
 894     hwaccels
 895     indevs
 896     muxers
 897     outdevs
 898     parsers
 899     protocols
 900 "
 901
 902 CONFIG_LIST="
 903     $COMPONENT_LIST
 904     aandct
 905     ac3dsp
 906     avcodec
 907     avdevice
 908     avfilter
 909     avformat
 910     avisynth
 911     bzlib
 912     dct
 913     doc
 914     dwt
 915     dxva2
 916     fastdiv
 917     ffmpeg
 918     avconv
 919     avplay
 920     avprobe
 921     avserver
 922     fft
 923     frei0r
 924     golomb
 925     gpl
 926     gray
 927     h264dsp
 928     h264pred
 929     hardcoded_tables
 930     huffman
 931     libcdio
 932     libdc1394
 933     libdirac
 934     libfaac
 935     libfreetype
 936     libgsm
 937     libmp3lame
 938     libnut
 939     libopencore_amrnb
 940     libopencore_amrwb
 941     libopencv
 942     libopenjpeg
 943     librtmp
 944     libschroedinger
 945     libspeex
 946     libtheora
 947     libvo_aacenc
 948     libvo_amrwbenc
 949     libvorbis
 950     libvpx
 951     libx264
 952     libxavs
 953     libxvid
 954     lpc
 955     lsp
 956     mdct
 957     memalign_hack
 958     mlib
 959     mpegaudiodsp
 960     network
 961     nonfree
 962     pic
 963     postproc
 964     rdft
 965     rtpdec
 966     runtime_cpudetect
 967     shared
 968     sinewin
 969     small
 970     sram
 971     static
 972     swscale
 973     swscale_alpha
 974     thumb
 975     vaapi
 976     vdpau
 977     version3
 978     x11grab
 979     zlib
 980 "
 981
 982 THREADS_LIST='
 983     pthreads
 984     w32threads
 985 '
 986
 987 ARCH_LIST='
 988     alpha
 989     arm
 990     avr32
 991     avr32_ap
 992     avr32_uc
 993     bfin
 994     ia64
 995     m68k
 996     mips
 997     mips64
 998     parisc
 999     ppc
1000     ppc64
1001     s390
1002     sh4
1003     sparc
1004     sparc64
1005     tomi
1006     x86
1007     x86_32
1008     x86_64
1009 '
1010
1011 ARCH_EXT_LIST='
1012     altivec
1013     amd3dnow
1014     amd3dnowext
1015     armv5te
1016     armv6
1017     armv6t2
1018     armvfp
1019     avx
1020     iwmmxt
1021     mmi
1022     mmx
1023     mmx2
1024     neon
1025     ppc4xx
1026     sse
1027     ssse3
1028     vfpv3
1029     vis
1030 '
1031
1032 HAVE_LIST_PUB='
1033     bigendian
1034     fast_unaligned
1035 '
1036
1037 HAVE_LIST="
1038     $ARCH_EXT_LIST
1039     $HAVE_LIST_PUB
1040     $THREADS_LIST
1041     aligned_stack
1042     alsa_asoundlib_h
1043     altivec_h
1044     arpa_inet_h
1045     asm_mod_y
1046     attribute_may_alias
1047     attribute_packed
1048     bswap
1049     closesocket
1050     cmov
1051     dcbzl
1052     dev_bktr_ioctl_bt848_h
1053     dev_bktr_ioctl_meteor_h
1054     dev_ic_bt8xx_h
1055     dev_video_meteor_ioctl_meteor_h
1056     dev_video_bktr_ioctl_bt848_h
1057     dlfcn_h
1058     dlopen
1059     dos_paths
1060     ebp_available
1061     ebx_available
1062     exp2
1063     exp2f
1064     fast_64bit
1065     fast_clz
1066     fast_cmov
1067     fcntl
1068     fork
1069     getaddrinfo
1070     gethrtime
1071     GetProcessMemoryInfo
1072     GetProcessTimes
1073     getrusage
1074     gnu_as
1075     struct_rusage_ru_maxrss
1076     ibm_asm
1077     inet_aton
1078     inline_asm
1079     isatty
1080     ldbrx
1081     libdc1394_1
1082     libdc1394_2
1083     llrint
1084     llrintf
1085     local_aligned_16
1086     local_aligned_8
1087     localtime_r
1088     log2
1089     log2f
1090     loongson
1091     lrint
1092     lrintf
1093     lzo1x_999_compress
1094     machine_ioctl_bt848_h
1095     machine_ioctl_meteor_h
1096     malloc_h
1097     MapViewOfFile
1098     memalign
1099     mkstemp
1100     mmap
1101     posix_memalign
1102     round
1103     roundf
1104     sdl
1105     sdl_video_size
1106     setmode
1107     sndio_h
1108     socklen_t
1109     soundcard_h
1110     poll_h
1111     setrlimit
1112     strerror_r
1113     strptime
1114     strtok_r
1115     struct_addrinfo
1116     struct_ipv6_mreq
1117     struct_sockaddr_in6
1118     struct_sockaddr_sa_len
1119     struct_sockaddr_storage
1120     symver
1121     symver_gnu_asm
1122     symver_asm_label
1123     sys_mman_h
1124     sys_resource_h
1125     sys_select_h
1126     sys_soundcard_h
1127     sys_videoio_h
1128     threads
1129     trunc
1130     truncf
1131     vfp_args
1132     VirtualAlloc
1133     winsock2_h
1134     xform_asm
1135     xmm_clobbers
1136     yasm
1137 "
1138
1139 # options emitted with CONFIG_ prefix but not available on command line
1140 CONFIG_EXTRA="
1141     avutil
1142     gplv3
1143     lgplv3
1144 "
1145
1146 CMDLINE_SELECT="
1147     $ARCH_EXT_LIST
1148     $CONFIG_LIST
1149     $THREADS_LIST
1150     asm
1151     cross_compile
1152     debug
1153     extra_warnings
1154     logging
1155     optimizations
1156     symver
1157     yasm
1158 "
1159
1160 PATHS_LIST='
1161     bindir
1162     datadir
1163     incdir
1164     libdir
1165     mandir
1166     prefix
1167     shlibdir
1168 '
1169
1170 CMDLINE_SET="
1171     $PATHS_LIST
1172     ar
1173     arch
1174     as
1175     build_suffix
1176     cc
1177     cpu
1178     cross_prefix
1179     dep_cc
1180     extra_version
1181     host_cc
1182     host_cflags
1183     host_ldflags
1184     host_libs
1185     host_os
1186     ld
1187     logfile
1188     malloc_prefix
1189     nm
1190     optflags
1191     pkg_config
1192     samples
1193     sysinclude
1194     sysroot
1195     target_exec
1196     target_os
1197     target_path
1198 "
1199
1200 CMDLINE_APPEND="
1201     extra_cflags
1202 "
1203
1204 # code dependency declarations
1205
1206 # architecture extensions
1207
1208 armv5te_deps="arm"
1209 armv6_deps="arm"
1210 armv6t2_deps="arm"
1211 armvfp_deps="arm"
1212 iwmmxt_deps="arm"
1213 neon_deps="arm"
1214 vfpv3_deps="armvfp"
1215
1216 mmi_deps="mips"
1217
1218 altivec_deps="ppc"
1219 ppc4xx_deps="ppc"
1220
1221 vis_deps="sparc"
1222
1223 x86_64_suggest="cmov fast_cmov"
1224 amd3dnow_deps="mmx"
1225 amd3dnowext_deps="amd3dnow"
1226 mmx_deps="x86"
1227 mmx2_deps="mmx"
1228 sse_deps="mmx"
1229 ssse3_deps="sse"
1230 avx_deps="ssse3"
1231
1232 aligned_stack_if_any="ppc x86"
1233 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1234 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1235 fast_unaligned_if_any="armv6 ppc x86"
1236
1237 need_memalign="altivec neon sse"
1238 inline_asm_deps="!tms470"
1239
1240 symver_if_any="symver_asm_label symver_gnu_asm"
1241
1242 # subsystems
1243 dct_select="rdft"
1244 mdct_select="fft"
1245 rdft_select="fft"
1246 mpegaudiodsp_select="dct"
1247
1248 # decoders / encoders / hardware accelerators
1249 aac_decoder_select="mdct sinewin"
1250 aac_encoder_select="mdct sinewin"
1251 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1252 ac3_decoder_select="mdct ac3dsp ac3_parser"
1253 ac3_encoder_select="mdct ac3dsp"
1254 ac3_fixed_encoder_select="mdct ac3dsp"
1255 alac_encoder_select="lpc"
1256 amrnb_decoder_select="lsp"
1257 amrwb_decoder_select="lsp"
1258 atrac1_decoder_select="mdct sinewin"
1259 atrac3_decoder_select="mdct"
1260 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1261 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1262 cavs_decoder_select="golomb"
1263 cook_decoder_select="mdct sinewin"
1264 cscd_decoder_suggest="zlib"
1265 dca_decoder_select="mdct"
1266 dnxhd_encoder_select="aandct"
1267 dxa_decoder_select="zlib"
1268 eac3_decoder_select="ac3_decoder"
1269 eac3_encoder_select="mdct ac3dsp"
1270 eamad_decoder_select="aandct"
1271 eatgq_decoder_select="aandct"
1272 eatqi_decoder_select="aandct"
1273 ffv1_decoder_select="golomb"
1274 flac_decoder_select="golomb"
1275 flac_encoder_select="golomb lpc"
1276 flashsv_decoder_select="zlib"
1277 flashsv_encoder_select="zlib"
1278 flashsv2_decoder_select="zlib"
1279 flv_decoder_select="h263_decoder"
1280 flv_encoder_select="h263_encoder"
1281 fraps_decoder_select="huffman"
1282 h261_encoder_select="aandct"
1283 h263_decoder_select="h263_parser"
1284 h263_encoder_select="aandct"
1285 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1286 h263i_decoder_select="h263_decoder"
1287 h263p_encoder_select="h263_encoder"
1288 h264_decoder_select="golomb h264dsp h264pred"
1289 h264_dxva2_hwaccel_deps="dxva2api_h"
1290 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1291 h264_vaapi_hwaccel_select="vaapi"
1292 h264_vdpau_decoder_select="vdpau h264_decoder"
1293 imc_decoder_select="fft mdct sinewin"
1294 jpegls_decoder_select="golomb"
1295 jpegls_encoder_select="golomb"
1296 ljpeg_encoder_select="aandct"
1297 loco_decoder_select="golomb"
1298 mjpeg_encoder_select="aandct"
1299 mlp_decoder_select="mlp_parser"
1300 mp1_decoder_select="mpegaudiodsp"
1301 mp2_decoder_select="mpegaudiodsp"
1302 mp3adu_decoder_select="mpegaudiodsp"
1303 mp3_decoder_select="mpegaudiodsp"
1304 mp3on4_decoder_select="mpegaudiodsp"
1305 mp1float_decoder_select="mpegaudiodsp"
1306 mp2float_decoder_select="mpegaudiodsp"
1307 mp3adufloat_decoder_select="mpegaudiodsp"
1308 mp3float_decoder_select="mpegaudiodsp"
1309 mp3on4float_decoder_select="mpegaudiodsp"
1310 mpeg1video_encoder_select="aandct"
1311 mpeg2video_encoder_select="aandct"
1312 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1313 mpeg4_encoder_select="h263_encoder"
1314 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1315 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1316 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1317 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1318 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1319 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1320 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1321 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1322 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1323 msmpeg4v1_decoder_select="h263_decoder"
1324 msmpeg4v1_encoder_select="h263_encoder"
1325 msmpeg4v2_decoder_select="h263_decoder"
1326 msmpeg4v2_encoder_select="h263_encoder"
1327 msmpeg4v3_decoder_select="h263_decoder"
1328 msmpeg4v3_encoder_select="h263_encoder"
1329 nellymoser_decoder_select="mdct sinewin"
1330 nellymoser_encoder_select="mdct sinewin"
1331 png_decoder_select="zlib"
1332 png_encoder_select="zlib"
1333 qcelp_decoder_select="lsp"
1334 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1335 ra_144_encoder_select="lpc"
1336 rv10_decoder_select="h263_decoder"
1337 rv10_encoder_select="h263_encoder"
1338 rv20_decoder_select="h263_decoder"
1339 rv20_encoder_select="h263_encoder"
1340 rv30_decoder_select="golomb h264pred"
1341 rv40_decoder_select="golomb h264pred"
1342 shorten_decoder_select="golomb"
1343 sipr_decoder_select="lsp"
1344 snow_decoder_select="dwt"
1345 snow_encoder_select="aandct dwt"
1346 svq1_encoder_select="aandct"
1347 svq3_decoder_select="golomb h264dsp h264pred"
1348 svq3_decoder_suggest="zlib"
1349 theora_decoder_select="vp3_decoder"
1350 tiff_decoder_suggest="zlib"
1351 tiff_encoder_suggest="zlib"
1352 truehd_decoder_select="mlp_decoder"
1353 tscc_decoder_select="zlib"
1354 twinvq_decoder_select="mdct lsp sinewin"
1355 vc1_decoder_select="h263_decoder"
1356 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1357 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1358 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1359 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1360 vc1image_decoder_select="vc1_decoder"
1361 vorbis_decoder_select="mdct"
1362 vorbis_encoder_select="mdct"
1363 vp6_decoder_select="huffman"
1364 vp6a_decoder_select="vp6_decoder"
1365 vp6f_decoder_select="vp6_decoder"
1366 vp8_decoder_select="h264pred"
1367 wmapro_decoder_select="mdct sinewin"
1368 wmav1_decoder_select="mdct sinewin"
1369 wmav1_encoder_select="mdct sinewin"
1370 wmav2_decoder_select="mdct sinewin"
1371 wmav2_encoder_select="mdct sinewin"
1372 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1373 wmv1_decoder_select="h263_decoder"
1374 wmv1_encoder_select="h263_encoder"
1375 wmv2_decoder_select="h263_decoder"
1376 wmv2_encoder_select="h263_encoder"
1377 wmv3_decoder_select="vc1_decoder"
1378 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1379 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1380 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1381 wmv3image_decoder_select="wmv3_decoder"
1382 zlib_decoder_select="zlib"
1383 zlib_encoder_select="zlib"
1384 zmbv_decoder_select="zlib"
1385 zmbv_encoder_select="zlib"
1386
1387 vaapi_deps="va_va_h"
1388 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1389
1390 # parsers
1391 h264_parser_select="golomb h264dsp h264pred"
1392
1393 # external libraries
1394 libdirac_decoder_deps="libdirac !libschroedinger"
1395 libdirac_encoder_deps="libdirac"
1396 libfaac_encoder_deps="libfaac"
1397 libgsm_decoder_deps="libgsm"
1398 libgsm_encoder_deps="libgsm"
1399 libgsm_ms_decoder_deps="libgsm"
1400 libgsm_ms_encoder_deps="libgsm"
1401 libmp3lame_encoder_deps="libmp3lame"
1402 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1403 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1404 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1405 libopenjpeg_decoder_deps="libopenjpeg"
1406 libschroedinger_decoder_deps="libschroedinger"
1407 libschroedinger_encoder_deps="libschroedinger"
1408 libspeex_decoder_deps="libspeex"
1409 libspeex_encoder_deps="libspeex"
1410 libtheora_encoder_deps="libtheora"
1411 libvo_aacenc_encoder_deps="libvo_aacenc"
1412 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1413 libvorbis_encoder_deps="libvorbis"
1414 libvpx_decoder_deps="libvpx"
1415 libvpx_encoder_deps="libvpx"
1416 libx264_encoder_deps="libx264"
1417 libxavs_encoder_deps="libxavs"
1418 libxvid_encoder_deps="libxvid"
1419
1420 # demuxers / muxers
1421 ac3_demuxer_select="ac3_parser"
1422 asf_stream_muxer_select="asf_muxer"
1423 avisynth_demuxer_deps="avisynth"
1424 dirac_demuxer_select="dirac_parser"
1425 eac3_demuxer_select="ac3_parser"
1426 flac_demuxer_select="flac_parser"
1427 ipod_muxer_select="mov_muxer"
1428 libnut_demuxer_deps="libnut"
1429 libnut_muxer_deps="libnut"
1430 matroska_audio_muxer_select="matroska_muxer"
1431 matroska_demuxer_suggest="zlib bzlib"
1432 mov_demuxer_suggest="zlib"
1433 mp3_demuxer_select="mpegaudio_parser"
1434 mp4_muxer_select="mov_muxer"
1435 mpegtsraw_demuxer_select="mpegts_demuxer"
1436 mxf_d10_muxer_select="mxf_muxer"
1437 ogg_demuxer_select="golomb"
1438 psp_muxer_select="mov_muxer"
1439 rtp_demuxer_select="sdp_demuxer"
1440 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1441 rtsp_demuxer_select="http_protocol rtpdec"
1442 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1443 sap_demuxer_select="sdp_demuxer"
1444 sap_muxer_select="rtp_muxer rtp_protocol"
1445 sdp_demuxer_select="rtpdec"
1446 spdif_muxer_select="aac_parser"
1447 tg2_muxer_select="mov_muxer"
1448 tgp_muxer_select="mov_muxer"
1449 w64_demuxer_deps="wav_demuxer"
1450
1451 # indevs / outdevs
1452 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1453 alsa_outdev_deps="alsa_asoundlib_h"
1454 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1455 dv1394_indev_deps="dv1394 dv_demuxer"
1456 fbdev_indev_deps="linux_fb_h"
1457 jack_indev_deps="jack_jack_h"
1458 libcdio_indev_deps="libcdio"
1459 libdc1394_indev_deps="libdc1394"
1460 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1461 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1462 sndio_indev_deps="sndio_h"
1463 sndio_outdev_deps="sndio_h"
1464 v4l_indev_deps="linux_videodev_h"
1465 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1466 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1467 vfwcap_indev_extralibs="-lavicap32"
1468 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1469 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1470
1471 # protocols
1472 gopher_protocol_deps="network"
1473 http_protocol_deps="network"
1474 http_protocol_select="tcp_protocol"
1475 mmsh_protocol_select="http_protocol"
1476 mmst_protocol_deps="network"
1477 rtmp_protocol_select="tcp_protocol"
1478 rtp_protocol_select="udp_protocol"
1479 tcp_protocol_deps="network"
1480 udp_protocol_deps="network"
1481
1482 # filters
1483 blackframe_filter_deps="gpl"
1484 boxblur_filter_deps="gpl"
1485 cropdetect_filter_deps="gpl"
1486 delogo_filter_deps="gpl"
1487 drawtext_filter_deps="libfreetype"
1488 frei0r_filter_deps="frei0r dlopen strtok_r"
1489 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1490 hqdn3d_filter_deps="gpl"
1491 ocv_filter_deps="libopencv"
1492 scale_filter_deps="swscale"
1493 yadif_filter_deps="gpl"
1494
1495 # libraries
1496 avdevice_deps="avcodec avformat"
1497 avformat_deps="avcodec"
1498 postproc_deps="gpl"
1499
1500 # programs
1501 ffmpeg_deps="avcodec avformat swscale"
1502 ffmpeg_select="buffer_filter"
1503 avconv_deps="avcodec avformat swscale"
1504 avconv_select="buffer_filter"
1505 avplay_deps="avcodec avformat swscale sdl"
1506 avplay_select="rdft"
1507 avprobe_deps="avcodec avformat"
1508 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1509 avserver_extralibs='$ldl'
1510
1511 doc_deps="texi2html"
1512
1513 # tests
1514
1515 test_deps(){
1516     suf1=$1
1517     suf2=$2
1518     shift 2
1519     for v; do
1520         dep=${v%=*}
1521         tests=${v#*=}
1522         for name in ${tests}; do
1523             append ${name}_test_deps ${dep}$suf1 ${dep}$suf2
1524         done
1525     done
1526 }
1527
1528 mxf_d10_test_deps="avfilter"
1529 seek_lavf_mxf_d10_test_deps="mxf_d10_test"
1530
1531 test_deps _encoder _decoder                                             \
1532     adpcm_g726=g726                                                     \
1533     adpcm_ima_qt                                                        \
1534     adpcm_ima_wav                                                       \
1535     adpcm_ms                                                            \
1536     adpcm_swf                                                           \
1537     adpcm_yamaha=adpcm_yam                                              \
1538     alac                                                                \
1539     asv1                                                                \
1540     asv2                                                                \
1541     bmp                                                                 \
1542     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1543     dvvideo="dv dv50"                                                   \
1544     ffv1                                                                \
1545     flac                                                                \
1546     flashsv                                                             \
1547     flv                                                                 \
1548     gif                                                                 \
1549     h261                                                                \
1550     h263="h263 h263p"                                                   \
1551     huffyuv                                                             \
1552     jpegls                                                              \
1553     mjpeg="jpg mjpeg ljpeg"                                             \
1554     mp2                                                                 \
1555     mpeg1video="mpeg mpeg1b"                                            \
1556     mpeg2video="mpeg2 mpeg2thread"                                      \
1557     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1558     msmpeg4v3=msmpeg4                                                   \
1559     msmpeg4v2                                                           \
1560     pbm=pbmpipe                                                         \
1561     pcx                                                                 \
1562     pgm="pgm pgmpipe"                                                   \
1563     png                                                                 \
1564     ppm="ppm ppmpipe"                                                   \
1565     rawvideo="rgb yuv"                                                  \
1566     roq                                                                 \
1567     rv10                                                                \
1568     rv20                                                                \
1569     sgi                                                                 \
1570     snow="snow snowll"                                                  \
1571     svq1                                                                \
1572     targa=tga                                                           \
1573     tiff                                                                \
1574     wmav1                                                               \
1575     wmav2                                                               \
1576     wmv1                                                                \
1577     wmv2                                                                \
1578
1579 test_deps _muxer _demuxer                                               \
1580     aiff                                                                \
1581     pcm_alaw=alaw                                                       \
1582     asf                                                                 \
1583     au                                                                  \
1584     avi                                                                 \
1585     dv=dv_fmt                                                           \
1586     ffm                                                                 \
1587     flv=flv_fmt                                                         \
1588     gxf                                                                 \
1589     matroska=mkv                                                        \
1590     mmf                                                                 \
1591     mov                                                                 \
1592     pcm_mulaw=mulaw                                                     \
1593     mxf="mxf mxf_d10"                                                   \
1594     nut                                                                 \
1595     ogg                                                                 \
1596     rawvideo=pixfmt                                                     \
1597     rm                                                                  \
1598     swf                                                                 \
1599     mpegts=ts                                                           \
1600     voc                                                                 \
1601     wav                                                                 \
1602     yuv4mpegpipe=yuv4mpeg                                               \
1603
1604 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1605 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1606
1607 # default parameters
1608
1609 logfile="config.log"
1610
1611 # installation paths
1612 prefix_default="/usr/local"
1613 bindir_default='${prefix}/bin'
1614 datadir_default='${prefix}/share/avconv'
1615 incdir_default='${prefix}/include'
1616 libdir_default='${prefix}/lib'
1617 mandir_default='${prefix}/share/man'
1618 shlibdir_default="$libdir_default"
1619
1620 # toolchain
1621 ar_default="ar"
1622 cc_default="gcc"
1623 cc_version=\"unknown\"
1624 host_cc_default="gcc"
1625 ln_s="ln -sf"
1626 nm_default="nm"
1627 objformat="elf"
1628 pkg_config_default=pkg-config
1629 ranlib="ranlib"
1630 yasmexe="yasm"
1631 nogas=":"
1632
1633 nm_opts='-g'
1634
1635 # machine
1636 arch_default=$(uname -m)
1637 cpu="generic"
1638
1639 # OS
1640 target_os_default=$(tolower $(uname -s))
1641 host_os=$target_os_default
1642
1643 # configurable options
1644 enable avcodec
1645 enable avdevice
1646 enable avfilter
1647 enable avformat
1648 enable avutil
1649 enable asm
1650 enable debug
1651 enable doc
1652 enable fastdiv
1653 enable ffmpeg
1654 enable avconv
1655 enable avplay
1656 enable avprobe
1657 enable avserver
1658 enable network
1659 enable optimizations
1660 enable postproc
1661 enable protocols
1662 enable static
1663 enable swscale
1664 enable swscale_alpha
1665
1666 # build settings
1667 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1668 AVSERVERLDFLAGS=-Wl,-E
1669 LIBPREF="lib"
1670 LIBSUF=".a"
1671 FULLNAME='$(NAME)$(BUILDSUF)'
1672 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1673 SLIBPREF="lib"
1674 SLIBSUF=".so"
1675 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1676 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1677 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1678 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1679 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1680 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1681
1682 AS_O='-o $@'
1683 CC_O='-o $@'
1684
1685 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1686 host_libs='-lm'
1687
1688 target_path='$(CURDIR)'
1689
1690 # since the object filename is not given with the -MM flag, the compiler
1691 # is only able to print the basename, and we must add the path ourselves
1692 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1693 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1694
1695 # find source path
1696 if test -f configure; then
1697     source_path=.
1698 else
1699     source_path=$(cd $(dirname "$0"); pwd)
1700     echo "$source_path" | grep -q '[[:blank:]]' &&
1701         die "Out of tree builds are impossible with whitespace in source path."
1702     test -e "$source_path/config.h" &&
1703         die "Out of tree builds are impossible with config.h in source dir."
1704 fi
1705
1706 for v in "$@"; do
1707     r=${v#*=}
1708     l=${v%"$r"}
1709     r=$(sh_quote "$r")
1710     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1711 done
1712
1713 find_things(){
1714     thing=$1
1715     pattern=$2
1716     file=$source_path/$3
1717     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1718 }
1719
1720 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1721 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1722 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1723 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1724 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1725 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1726 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1727 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1728 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1729 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1730 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1731
1732 find_tests(){
1733     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1734 }
1735
1736 ACODEC_TESTS=$(find_tests acodec)
1737 VCODEC_TESTS=$(find_tests vsynth1)
1738 LAVF_TESTS=$(find_tests lavf)
1739 LAVFI_TESTS=$(find_tests lavfi)
1740 SEEK_TESTS=$(find_tests seek seek_)
1741
1742 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1743
1744 for n in $COMPONENT_LIST; do
1745     v=$(toupper ${n%s})_LIST
1746     eval enable \$$v
1747     eval ${n}_if_any="\$$v"
1748 done
1749
1750 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1751
1752 die_unknown(){
1753     echo "Unknown option \"$1\"."
1754     echo "See $0 --help for available options."
1755     exit 1
1756 }
1757
1758 show_list() {
1759     suffix=_$1
1760     shift
1761     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1762     exit 0
1763 }
1764
1765 for opt do
1766     optval="${opt#*=}"
1767     case "$opt" in
1768     --extra-ldflags=*) add_ldflags $optval
1769     ;;
1770     --extra-libs=*) add_extralibs $optval
1771     ;;
1772     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1773     ;;
1774     --enable-debug=*) debuglevel="$optval"
1775     ;;
1776     --disable-everything)
1777     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1778     ;;
1779     --enable-*=*|--disable-*=*)
1780     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1781     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1782     eval list=\$$(toupper $thing)_LIST
1783     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1784     $action $(filter "$name" $list)
1785     ;;
1786     --enable-?*|--disable-?*)
1787     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1788     if is_in $option $COMPONENT_LIST; then
1789         test $action = disable && action=unset
1790         eval $action \$$(toupper ${option%s})_LIST
1791     elif is_in $option $CMDLINE_SELECT; then
1792         $action $option
1793     else
1794         die_unknown $opt
1795     fi
1796     ;;
1797     --list-*)
1798         NAME="${opt#--list-}"
1799         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1800         NAME=${NAME%s}
1801         eval show_list $NAME \$$(toupper $NAME)_LIST
1802     ;;
1803     --help|-h) show_help
1804     ;;
1805     *)
1806     optname="${opt%%=*}"
1807     optname="${optname#--}"
1808     optname=$(echo "$optname" | sed 's/-/_/g')
1809     if is_in $optname $CMDLINE_SET; then
1810         eval $optname='$optval'
1811     elif is_in $optname $CMDLINE_APPEND; then
1812         append $optname "$optval"
1813     else
1814          die_unknown $opt
1815     fi
1816     ;;
1817     esac
1818 done
1819
1820 disabled logging && logfile=/dev/null
1821
1822 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
1823 set >> $logfile
1824
1825 test -n "$cross_prefix" && enable cross_compile
1826
1827 if enabled cross_compile; then
1828     test -n "$arch" && test -n "$target_os" ||
1829         die "Must specify target arch and OS when cross-compiling"
1830 fi
1831
1832 set_default arch target_os
1833
1834 ar_default="${cross_prefix}${ar_default}"
1835 cc_default="${cross_prefix}${cc_default}"
1836 nm_default="${cross_prefix}${nm_default}"
1837 pkg_config_default="${cross_prefix}${pkg_config_default}"
1838 ranlib="${cross_prefix}${ranlib}"
1839
1840 sysinclude_default="${sysroot}/usr/include"
1841
1842 set_default cc nm pkg_config sysinclude
1843 enabled cross_compile || host_cc_default=$cc
1844 set_default host_cc
1845
1846 if ! $pkg_config --version >/dev/null 2>&1; then
1847     warn "$pkg_config not found, library detection may fail."
1848     pkg_config=false
1849 fi
1850
1851 exesuf() {
1852     case $1 in
1853         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1854     esac
1855 }
1856
1857 EXESUF=$(exesuf $target_os)
1858 HOSTEXESUF=$(exesuf $host_os)
1859
1860 # set temporary file name
1861 : ${TMPDIR:=$TEMPDIR}
1862 : ${TMPDIR:=$TMP}
1863 : ${TMPDIR:=/tmp}
1864
1865 if ! check_cmd mktemp -u XXXXXX; then
1866     # simple replacement for missing mktemp
1867     # NOT SAFE FOR GENERAL USE
1868     mktemp(){
1869         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1870     }
1871 fi
1872
1873 tmpfile(){
1874     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1875         (set -C; exec > $tmp) 2>/dev/null ||
1876         die "Unable to create temporary file in $TMPDIR."
1877     append TMPFILES $tmp
1878     eval $1=$tmp
1879 }
1880
1881 trap 'rm -f -- $TMPFILES' EXIT
1882
1883 tmpfile TMPC  .c
1884 tmpfile TMPE  $EXESUF
1885 tmpfile TMPH  .h
1886 tmpfile TMPO  .o
1887 tmpfile TMPS  .S
1888 tmpfile TMPV  .ver
1889 tmpfile TMPSH .sh
1890 tmpfile TMPASM .asm
1891
1892 unset -f mktemp
1893
1894 chmod +x $TMPE
1895
1896 # make sure we can execute files in $TMPDIR
1897 cat > $TMPSH 2>> $logfile <<EOF
1898 #! /bin/sh
1899 EOF
1900 chmod +x $TMPSH >> $logfile 2>&1
1901 if ! $TMPSH >> $logfile 2>&1; then
1902     cat <<EOF
1903 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1904 variable to another directory and make sure that it is not mounted noexec.
1905 EOF
1906     die "Sanity test failed."
1907 fi
1908
1909 filter_cflags=echo
1910 filter_cppflags=echo
1911 filter_asflags=echo
1912
1913 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1914     cc_type=llvm_gcc
1915     cc_version=__VERSION__
1916     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1917     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1918     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1919     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1920     speed_cflags='-O3'
1921     size_cflags='-Os'
1922 elif $cc -v 2>&1 | grep -qi ^gcc; then
1923     cc_type=gcc
1924     cc_version=__VERSION__
1925     gcc_version=$($cc --version | head -n1)
1926     gcc_basever=$($cc -dumpversion)
1927     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1928     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1929     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1930     if ! $cc -dumpversion | grep -q '^2\.'; then
1931         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1932         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1933     fi
1934     speed_cflags='-O3'
1935     size_cflags='-Os'
1936 elif $cc --version 2>/dev/null | grep -q Intel; then
1937     cc_type=icc
1938     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1939     cc_ident=$($cc --version | head -n1)
1940     icc_version=$($cc -dumpversion)
1941     CC_DEPFLAGS='-MMD'
1942     AS_DEPFLAGS='-MMD'
1943     speed_cflags='-O3'
1944     size_cflags='-Os'
1945     noopt_cflags='-O1'
1946 elif $cc -v 2>&1 | grep -q xlc; then
1947     cc_type=xlc
1948     cc_version="AV_STRINGIFY(__IBMC__)"
1949     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1950     speed_cflags='-O5'
1951     size_cflags='-O5 -qcompact'
1952 elif $cc -V 2>/dev/null | grep -q Compaq; then
1953     cc_type=ccc
1954     cc_version="AV_STRINGIFY(__DECC_VER)"
1955     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1956     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1957     debuglevel=3
1958     add_ldflags -Wl,-z,now # calls to libots crash without this
1959     speed_cflags='-fast'
1960     size_cflags='-O1'
1961 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1962     test -d "$sysroot" || die "No valid sysroot specified."
1963     cc_type=armcc
1964     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1965     cc_ident=$($cc --vsn | head -n1)
1966     armcc_conf="$PWD/armcc.conf"
1967     $cc --arm_linux_configure                 \
1968         --arm_linux_config_file="$armcc_conf" \
1969         --configure_sysroot="$sysroot"        \
1970         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1971         die "Error creating armcc configuration file."
1972     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1973     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1974     as_default="${cross_prefix}gcc"
1975     CC_DEPFLAGS='-MMD'
1976     AS_DEPFLAGS='-MMD'
1977     speed_cflags='-O3'
1978     size_cflags='-Os'
1979     filter_asflags="filter_out -W${armcc_opt}*"
1980 elif $cc -version 2>/dev/null | grep -q TMS470; then
1981     cc_type=tms470
1982     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1983     cc_ident=$($cc -version | head -n1 | tr -s ' ')
1984     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1985     CC_O='-fr=$(@D)'
1986     as_default="${cross_prefix}gcc"
1987     ld_default="${cross_prefix}gcc"
1988     TMPO=$(basename $TMPC .c).o
1989     append TMPFILES $TMPO
1990     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
1991     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
1992     AS_DEPFLAGS='-MMD'
1993     speed_cflags='-O3 -mf=5'
1994     size_cflags='-O3 -mf=2'
1995     filter_cflags=tms470_flags
1996     tms470_flags(){
1997         for flag; do
1998             case $flag in
1999                 -march=*|-mcpu=*)
2000                     case "${flag#*=}" in
2001                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2002                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2003                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2004                         armv6*|arm11*)          echo -mv=6   ;;
2005                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2006                                                 echo -mv=5e  ;;
2007                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2008                     esac
2009                     ;;
2010                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2011                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2012                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2013                 -msoft-float)   echo --float_support=vfplib       ;;
2014                 -O[0-3]|-mf=*)  echo $flag                        ;;
2015                 -g)             echo -g -mn                       ;;
2016                 -pds=*)         echo $flag                        ;;
2017             esac
2018         done
2019     }
2020 elif $cc -v 2>&1 | grep -q clang; then
2021     cc_type=clang
2022     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2023         cc_version=__clang_version__ || cc_version=__VERSION__
2024     cc_ident=$($cc --version | head -n1)
2025     CC_DEPFLAGS='-MMD'
2026     AS_DEPFLAGS='-MMD'
2027     speed_cflags='-O3'
2028     size_cflags='-Os'
2029 elif $cc -V 2>&1 | grep -q Sun; then
2030     cc_type=suncc
2031     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2032     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2033     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2034     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2035     add_ldflags -xc99
2036     speed_cflags='-O5'
2037     size_cflags='-O5 -xspace'
2038     filter_cflags=suncc_flags
2039     suncc_flags(){
2040         for flag; do
2041             case $flag in
2042                 -march=*|-mcpu=*)
2043                     case "${flag#*=}" in
2044                         native)                   echo -xtarget=native       ;;
2045                         v9|niagara)               echo -xarch=sparc          ;;
2046                         ultrasparc)               echo -xarch=sparcvis       ;;
2047                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2048                         i586|pentium)             echo -xchip=pentium        ;;
2049                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2050                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2051                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2052                         pentium4*)          echo -xtarget=pentium4           ;;
2053                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2054                         *-sse3)             echo -xarch=sse3                 ;;
2055                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2056                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2057                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2058                         k8|opteron|athlon64|athlon-fx)
2059                                                   echo -xarch=sse2a          ;;
2060                         athlon*)                  echo -xarch=pentium_proa   ;;
2061                     esac
2062                     ;;
2063                 -std=c99)             echo -xc99              ;;
2064                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2065                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2066                 -W*,*)                echo $flag              ;;
2067                 -f*-*|-W*)                                    ;;
2068                 *)                    echo $flag              ;;
2069             esac
2070         done
2071     }
2072 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2073     cc_type=pathscale
2074     cc_version=__PATHSCALE__
2075     cc_ident=$($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     filter_cflags='filter_out -Wdisabled-optimization'
2081 elif $cc -v 2>&1 | grep -q Open64; then
2082     cc_type=open64
2083     cc_version=__OPEN64__
2084     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2085     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2086     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2087     speed_cflags='-O2'
2088     size_cflags='-Os'
2089     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2090 fi
2091
2092 test -n "$cc_type" && enable $cc_type ||
2093     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2094
2095 : ${as_default:=$cc}
2096 : ${dep_cc_default:=$cc}
2097 : ${ld_default:=$cc}
2098 set_default ar as dep_cc ld
2099
2100 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2101 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2102
2103 add_cflags $extra_cflags
2104 add_asflags $extra_cflags
2105
2106 if test -n "$sysroot"; then
2107     case "$cc_type" in
2108         gcc|llvm_gcc|clang)
2109             add_cppflags --sysroot="$sysroot"
2110             add_ldflags --sysroot="$sysroot"
2111         ;;
2112         tms470)
2113             add_cppflags -I"$sysinclude"
2114             add_ldflags  --sysroot="$sysroot"
2115         ;;
2116     esac
2117 fi
2118
2119 if test "$cpu" = host; then
2120     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2121
2122     case "$cc_type" in
2123         gcc|llvm_gcc)
2124             check_native(){
2125                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2126                 sed -n "/cc1.*$1=/{
2127                             s/.*$1=\\([^ ]*\\).*/\\1/
2128                             p
2129                             q
2130                         }" $TMPE
2131             }
2132             cpu=$(check_native -march || check_native -mcpu)
2133         ;;
2134     esac
2135
2136     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2137 fi
2138
2139 # Deal with common $arch aliases
2140 case "$arch" in
2141     arm*)
2142         arch="arm"
2143     ;;
2144     mips|mipsel|IP*)
2145         arch="mips"
2146     ;;
2147     mips64*)
2148         arch="mips"
2149         subarch="mips64"
2150     ;;
2151     parisc|hppa)
2152         arch="parisc"
2153     ;;
2154     parisc64|hppa64)
2155         arch="parisc"
2156         subarch="parisc64"
2157     ;;
2158     "Power Macintosh"|ppc|powerpc)
2159         arch="ppc"
2160     ;;
2161     ppc64|powerpc64)
2162         arch="ppc"
2163         subarch="ppc64"
2164     ;;
2165     s390|s390x)
2166         arch="s390"
2167     ;;
2168     sh4|sh)
2169         arch="sh4"
2170     ;;
2171     sun4u|sparc64)
2172         arch="sparc"
2173         subarch="sparc64"
2174     ;;
2175     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2176         arch="x86"
2177     ;;
2178 esac
2179
2180 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2181 enable $arch
2182
2183 # Add processor-specific flags
2184 if test "$cpu" = generic; then
2185     : do nothing
2186 elif enabled ppc; then
2187
2188     case $(tolower $cpu) in
2189         601|ppc601|powerpc601)
2190             cpuflags="-mcpu=601"
2191             disable altivec
2192         ;;
2193         603*|ppc603*|powerpc603*)
2194             cpuflags="-mcpu=603"
2195             disable altivec
2196         ;;
2197         604*|ppc604*|powerpc604*)
2198             cpuflags="-mcpu=604"
2199             disable altivec
2200         ;;
2201         g3|75*|ppc75*|powerpc75*)
2202             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2203             disable altivec
2204         ;;
2205         g4|745*|ppc745*|powerpc745*)
2206             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2207         ;;
2208         74*|ppc74*|powerpc74*)
2209             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2210         ;;
2211         g5|970|ppc970|powerpc970|power4*)
2212             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2213         ;;
2214         cell)
2215             cpuflags="-mcpu=cell"
2216             enable ldbrx
2217         ;;
2218         e500v2)
2219             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2220             disable altivec
2221         ;;
2222         e500)
2223             cpuflags="-mcpu=8540 -mhard-float"
2224             disable altivec
2225         ;;
2226     esac
2227
2228 elif enabled x86; then
2229
2230     case $cpu in
2231         i[345]86|pentium)
2232             cpuflags="-march=$cpu"
2233             disable mmx
2234         ;;
2235         # targets that do NOT support conditional mov (cmov)
2236         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2237             cpuflags="-march=$cpu"
2238             disable cmov
2239         ;;
2240         # targets that do support conditional mov (cmov)
2241         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom)
2242             cpuflags="-march=$cpu"
2243             enable cmov
2244             enable fast_cmov
2245         ;;
2246         # targets that do support conditional mov but on which it's slow
2247         pentium4|pentium4m|prescott|nocona)
2248             cpuflags="-march=$cpu"
2249             enable cmov
2250             disable fast_cmov
2251         ;;
2252     esac
2253
2254 elif enabled sparc; then
2255
2256     case $cpu in
2257         niagara)
2258             cpuflags="-mcpu=$cpu"
2259             disable vis
2260         ;;
2261         sparc64)
2262             cpuflags="-mcpu=v9"
2263         ;;
2264     esac
2265
2266 elif enabled arm; then
2267
2268     case $cpu in
2269         armv*)
2270             cpuflags="-march=$cpu"
2271             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2272         ;;
2273         *)
2274             cpuflags="-mcpu=$cpu"
2275             case $cpu in
2276                 cortex-a*)                               subarch=armv7a  ;;
2277                 cortex-r*)                               subarch=armv7r  ;;
2278                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2279                 arm11*)                                  subarch=armv6   ;;
2280                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2281                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2282             esac
2283         ;;
2284     esac
2285
2286 elif enabled alpha; then
2287
2288     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2289
2290 elif enabled bfin; then
2291
2292     cpuflags="-mcpu=$cpu"
2293
2294 elif enabled mips; then
2295
2296     cpuflags="-march=$cpu"
2297
2298 elif enabled avr32; then
2299
2300     case $cpu in
2301         ap7[02]0[0-2])
2302             subarch="avr32_ap"
2303             cpuflags="-mpart=$cpu"
2304         ;;
2305         ap)
2306             subarch="avr32_ap"
2307             cpuflags="-march=$cpu"
2308         ;;
2309         uc3[ab]*)
2310             subarch="avr32_uc"
2311             cpuflags="-mcpu=$cpu"
2312         ;;
2313         uc)
2314             subarch="avr32_uc"
2315             cpuflags="-march=$cpu"
2316         ;;
2317     esac
2318
2319 fi
2320
2321 add_cflags $cpuflags
2322 add_asflags $cpuflags
2323
2324 # compiler sanity check
2325 check_exec <<EOF
2326 int main(void){ return 0; }
2327 EOF
2328 if test "$?" != 0; then
2329     echo "$cc is unable to create an executable file."
2330     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2331         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2332         echo "Only do this if you know what cross compiling means."
2333     fi
2334     die "C compiler test failed."
2335 fi
2336
2337 add_cppflags -D_ISOC99_SOURCE
2338 check_cflags -std=c99
2339 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2340 #include <stdlib.h>
2341 EOF
2342 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2343 #include <stdlib.h>
2344 EOF
2345
2346 check_host_cflags -std=c99
2347 check_host_cflags -Wall
2348
2349 case "$arch" in
2350     alpha|ia64|mips|parisc|sparc)
2351         spic=$shared
2352     ;;
2353     x86)
2354         subarch="x86_32"
2355         check_cc <<EOF && subarch="x86_64"
2356         int test[(int)sizeof(char*) - 7];
2357 EOF
2358         if test "$subarch" = "x86_64"; then
2359             spic=$shared
2360         fi
2361     ;;
2362 esac
2363
2364 enable $subarch
2365 enabled spic && enable pic
2366
2367 # OS specific
2368 case $target_os in
2369     haiku)
2370         prefix_default="/boot/common"
2371         network_extralibs="-lnetwork"
2372         host_libs=
2373         ;;
2374     sunos)
2375         AVSERVERLDFLAGS=""
2376         SHFLAGS='-shared -Wl,-h,$$(@F)'
2377         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2378         network_extralibs="-lsocket -lnsl"
2379         add_cppflags -D__EXTENSIONS__
2380         # When using suncc to build, the Solaris linker will mark
2381         # an executable with each instruction set encountered by
2382         # the Solaris assembler.  As our libraries contain their own
2383         # guards for processor-specific code, instead suppress
2384         # generation of the HWCAPS ELF section on Solaris x86 only.
2385         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2386         nm_opts='-P -g'
2387         ;;
2388     netbsd)
2389         disable symver
2390         oss_indev_extralibs="-lossaudio"
2391         oss_outdev_extralibs="-lossaudio"
2392         ;;
2393     openbsd)
2394         enable malloc_aligned
2395         # On OpenBSD 4.5. the compiler does not use PIC unless
2396         # explicitly using -fPIC. Libav builds fine without PIC,
2397         # however the generated executable will not do anything
2398         # (simply quits with exit-code 1, no crash, no output).
2399         # Thus explicitly enable PIC here.
2400         enable pic
2401         disable symver
2402         SHFLAGS='-shared'
2403         oss_indev_extralibs="-lossaudio"
2404         oss_outdev_extralibs="-lossaudio"
2405         ;;
2406     dragonfly)
2407         enable malloc_aligned
2408         disable symver
2409         ;;
2410     freebsd)
2411         enable malloc_aligned
2412         ;;
2413     bsd/os)
2414         add_extralibs -lpoll -lgnugetopt
2415         ;;
2416     darwin)
2417         enable malloc_aligned
2418         gas="gas-preprocessor.pl $cc"
2419         enabled ppc && add_asflags -force_cpusubtype_ALL
2420         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2421         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2422         add_ldflags -Wl,-dynamic,-search_paths_first
2423         SLIBSUF=".dylib"
2424         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2425         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2426         AVSERVERLDFLAGS=-Wl,-bind_at_load
2427         objformat="macho"
2428         enabled x86_64 && objformat="macho64"
2429         enabled_any pic shared ||
2430             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2431         ;;
2432     mingw32*)
2433         if test $target_os = "mingw32ce"; then
2434             disable network
2435         else
2436             target_os=mingw32
2437         fi
2438         LIBTARGET=i386
2439         if enabled x86_64; then
2440             enable malloc_aligned
2441             LIBTARGET="i386:x86-64"
2442         elif enabled arm; then
2443             LIBTARGET=arm-wince
2444         fi
2445         shlibdir_default="$bindir_default"
2446         SLIBPREF=""
2447         SLIBSUF=".dll"
2448         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2449         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2450         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2451         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2452         SLIB_INSTALL_LINKS=
2453         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2454         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2455         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'
2456         objformat="win32"
2457         dlltool="${cross_prefix}dlltool"
2458         enable dos_paths
2459         check_cflags -fno-common
2460         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2461                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2462                 die "ERROR: MinGW runtime version must be >= 3.15."
2463         add_cppflags -U__STRICT_ANSI__
2464         ;;
2465     cygwin*)
2466         target_os=cygwin
2467         shlibdir_default="$bindir_default"
2468         SLIBPREF="cyg"
2469         SLIBSUF=".dll"
2470         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2471         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2472         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2473         objformat="win32"
2474         enable dos_paths
2475         check_cflags -fno-common
2476         add_cppflags -U__STRICT_ANSI__
2477         ;;
2478     *-dos|freedos|opendos)
2479         network_extralibs="-lsocket"
2480         objformat="coff"
2481         enable dos_paths
2482         add_cppflags -U__STRICT_ANSI__
2483         ;;
2484     linux)
2485         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2486         enable dv1394
2487         ;;
2488     irix*)
2489         target_os=irix
2490         ranlib="echo ignoring ranlib"
2491         ;;
2492     os/2*)
2493         ln_s="cp -f"
2494         objformat="aout"
2495         add_cppflags -D_GNU_SOURCE
2496         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2497         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2498         AVSERVERLDFLAGS=""
2499         LIBSUF="_s.a"
2500         SLIBPREF=""
2501         SLIBSUF=".dll"
2502         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2503         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2504         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2505           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2506           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2507           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2508           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2509           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2510         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2511           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2512         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2513         enable dos_paths
2514         ;;
2515     gnu/kfreebsd)
2516         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2517         ;;
2518     gnu)
2519         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2520         ;;
2521     qnx)
2522         add_cppflags -D_QNX_SOURCE
2523         network_extralibs="-lsocket"
2524         ;;
2525     symbian)
2526         SLIBSUF=".dll"
2527         enable dos_paths
2528         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2529         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2530         add_ldflags -Wl,--target1-abs,--no-undefined \
2531                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2532                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2533         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2534                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2535                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2536         ;;
2537     none)
2538         ;;
2539     *)
2540         die "Unknown OS '$target_os'."
2541         ;;
2542 esac
2543
2544 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$LIBAV_CONFIGURATION" >config.fate
2545
2546 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2547
2548 set_default $PATHS_LIST
2549
2550 # we need to build at least one lib type
2551 if ! enabled_any static shared; then
2552     cat <<EOF
2553 At least one library type must be built.
2554 Specify --enable-static to build the static libraries or --enable-shared to
2555 build the shared libraries as well. To only build the shared libraries specify
2556 --disable-static in addition to --enable-shared.
2557 EOF
2558     exit 1;
2559 fi
2560
2561 die_license_disabled() {
2562     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2563 }
2564
2565 die_license_disabled gpl libcdio
2566 die_license_disabled gpl libx264
2567 die_license_disabled gpl libxavs
2568 die_license_disabled gpl libxvid
2569 die_license_disabled gpl x11grab
2570
2571 die_license_disabled nonfree libfaac
2572
2573 die_license_disabled version3 libopencore_amrnb
2574 die_license_disabled version3 libopencore_amrwb
2575 die_license_disabled version3 libvo_aacenc
2576 die_license_disabled version3 libvo_amrwbenc
2577
2578 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2579
2580 disabled optimizations || check_cflags -fomit-frame-pointer
2581
2582 enable_pic() {
2583     enable pic
2584     add_cppflags -DPIC
2585     add_cflags   -fPIC
2586     add_asflags  -fPIC
2587 }
2588
2589 enabled pic && enable_pic
2590
2591 check_cc <<EOF || die "Symbol mangling check failed."
2592 int ff_extern;
2593 EOF
2594 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2595 extern_prefix=${sym%%ff_extern*}
2596
2597 check_cc <<EOF && enable inline_asm
2598 void foo(void) { __asm__ volatile ("" ::); }
2599 EOF
2600
2601 _restrict=
2602 for restrict_keyword in restrict __restrict__ __restrict; do
2603     check_cc <<EOF && _restrict=$restrict_keyword && break
2604 void foo(char * $restrict_keyword p);
2605 EOF
2606 done
2607
2608 check_cc <<EOF && enable attribute_packed
2609 struct { int x; } __attribute__((packed)) x;
2610 EOF
2611
2612 check_cc <<EOF && enable attribute_may_alias
2613 union { int x; } __attribute__((may_alias)) x;
2614 EOF
2615
2616 check_cc <<EOF || die "endian test failed"
2617 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2618 EOF
2619 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2620
2621 if enabled alpha; then
2622
2623     check_cflags -mieee
2624
2625 elif enabled arm; then
2626
2627     enabled thumb && check_cflags -mthumb || check_cflags -marm
2628     nogas=die
2629
2630     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2631         enable vfp_args
2632     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2633         case "${cross_prefix:-$cc}" in
2634             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2635             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2636 __asm__ (".eabi_attribute 28, 1");
2637 int main(void) { return 0; }
2638 EOF
2639         esac
2640         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2641     fi
2642
2643     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2644     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2645     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2646     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2647     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2648     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2649     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2650
2651     check_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
2652
2653     enabled_all armv6t2 shared !pic && enable_pic
2654
2655 elif enabled mips; then
2656
2657     check_asm loongson '"dmult.g $1, $2, $3"'
2658     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2659
2660 elif enabled ppc; then
2661
2662     enable local_aligned_8 local_aligned_16
2663
2664     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2665     check_asm ibm_asm   '"add 0, 0, 0"'
2666     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2667     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2668
2669     # AltiVec flags: The FSF version of GCC differs from the Apple version
2670     if enabled altivec; then
2671         nogas=warn
2672         check_cflags -maltivec -mabi=altivec &&
2673         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2674         check_cflags -faltivec
2675
2676         # check if our compiler supports Motorola AltiVec C API
2677         check_cc <<EOF || disable altivec
2678 $inc_altivec_h
2679 int main(void) {
2680     vector signed int v1, v2, v3;
2681     v1 = vec_add(v2,v3);
2682     return 0;
2683 }
2684 EOF
2685
2686         # check if our compiler supports braces for vector declarations
2687         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2688 $inc_altivec_h
2689 int main (void) { (vector int) {1}; return 0; }
2690 EOF
2691     fi
2692
2693 elif enabled sparc; then
2694
2695     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2696         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2697
2698 elif enabled x86; then
2699
2700     enable local_aligned_8 local_aligned_16
2701
2702     # check whether EBP is available on x86
2703     # As 'i' is stored on the stack, this program will crash
2704     # if the base pointer is used to access it because the
2705     # base pointer is cleared in the inline assembly code.
2706     check_exec_crash <<EOF && enable ebp_available
2707     volatile int i=0;
2708     __asm__ volatile (
2709         "xorl %%ebp, %%ebp"
2710     ::: "%ebp");
2711     return i;
2712 EOF
2713
2714     # check whether EBX is available on x86
2715     check_asm ebx_available '""::"b"(0)' &&
2716         check_asm ebx_available '"":::"%ebx"'
2717
2718     # check whether xmm clobbers are supported
2719     check_asm xmm_clobbers '"":::"%xmm0"'
2720
2721     # check whether binutils is new enough to compile SSSE3/MMX2
2722     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2723     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2724
2725     check_asm bswap '"bswap %%eax" ::: "%eax"'
2726
2727     if ! disabled_any asm mmx yasm; then
2728         if check_cmd $yasmexe --version; then
2729             enabled x86_64 && yasm_extra="-m amd64"
2730             yasm_debug="-g dwarf2"
2731         elif check_cmd nasm -v; then
2732             yasmexe=nasm
2733             yasm_debug="-g -F dwarf"
2734             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2735         fi
2736
2737         YASMFLAGS="-f $objformat $yasm_extra"
2738         enabled pic               && append YASMFLAGS "-DPIC"
2739         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2740         case "$objformat" in
2741             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2742         esac
2743
2744         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2745             die "yasm not found, use --disable-yasm for a crippled build"
2746         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2747     fi
2748
2749     case "$cpu" in
2750         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2751             disable fast_clz
2752         ;;
2753     esac
2754
2755 fi
2756
2757 if enabled asm; then
2758     as=${gas:=$as}
2759     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2760         $nogas "GNU assembler not found, install gas-preprocessor"
2761 fi
2762
2763 check_ldflags -Wl,--as-needed
2764
2765 if check_func dlopen; then
2766     ldl=
2767 elif check_func dlopen -ldl; then
2768     ldl=-ldl
2769 fi
2770
2771 if enabled network; then
2772     check_type "sys/types.h sys/socket.h" socklen_t
2773     check_type netdb.h "struct addrinfo"
2774     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2775     check_type netinet/in.h "struct sockaddr_in6"
2776     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2777     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2778     # Prefer arpa/inet.h over winsock2
2779     if check_header arpa/inet.h ; then
2780         check_func closesocket
2781     elif check_header winsock2.h ; then
2782         check_func_headers winsock2.h closesocket -lws2 && \
2783             network_extralibs="-lws2" || \
2784         { check_func_headers winsock2.h closesocket -lws2_32 && \
2785             network_extralibs="-lws2_32"; }
2786         check_type ws2tcpip.h socklen_t
2787         check_type ws2tcpip.h "struct addrinfo"
2788         check_type ws2tcpip.h "struct ipv6_mreq"
2789         check_type ws2tcpip.h "struct sockaddr_in6"
2790         check_type ws2tcpip.h "struct sockaddr_storage"
2791         check_struct winsock2.h "struct sockaddr" sa_len
2792     else
2793         disable network
2794     fi
2795 fi
2796
2797 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2798 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2799
2800 check_func  fcntl
2801 check_func  fork
2802 check_func  getaddrinfo $network_extralibs
2803 check_func  gethrtime
2804 check_func  getrusage
2805 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2806 check_func  inet_aton $network_extralibs
2807 check_func  isatty
2808 check_func  localtime_r
2809 check_func  ${malloc_prefix}memalign            && enable memalign
2810 check_func  mkstemp
2811 check_func  mmap
2812 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2813 check_func  setrlimit
2814 check_func  strerror_r
2815 check_func  strptime
2816 check_func  strtok_r
2817 check_func_headers io.h setmode
2818 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2819 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2820 check_func_headers windows.h GetProcessTimes
2821 check_func_headers windows.h MapViewOfFile
2822 check_func_headers windows.h VirtualAlloc
2823
2824 check_header dlfcn.h
2825 check_header dxva2api.h
2826 check_header malloc.h
2827 check_header poll.h
2828 check_header sys/mman.h
2829 check_header sys/resource.h
2830 check_header sys/select.h
2831 check_header vdpau/vdpau.h
2832 check_header vdpau/vdpau_x11.h
2833 check_header X11/extensions/XvMClib.h
2834
2835 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2836
2837 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2838 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2839
2840 # check for some common methods of building with pthread support
2841 # do this before the optional library checks as some of them require pthreads
2842 if ! disabled pthreads && ! enabled w32threads; then
2843     enable pthreads
2844     if check_func pthread_create; then
2845         :
2846     elif check_func pthread_create -pthread; then
2847         add_cflags -pthread
2848         add_extralibs -pthread
2849     elif check_func pthread_create -pthreads; then
2850         add_cflags -pthreads
2851         add_extralibs -pthreads
2852     elif check_func pthread_create -lpthreadGC2; then
2853         add_extralibs -lpthreadGC2
2854     elif ! check_lib pthread.h pthread_create -lpthread; then
2855         disable pthreads
2856     fi
2857 fi
2858
2859 for thread in $THREADS_LIST; do
2860     if enabled $thread; then
2861         test -n "$thread_type" &&
2862             die "ERROR: Only one thread type must be selected." ||
2863             thread_type="$thread"
2864     fi
2865 done
2866
2867 check_lib math.h sin -lm && LIBM="-lm"
2868 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2869
2870 check_mathfunc exp2
2871 check_mathfunc exp2f
2872 check_mathfunc llrint
2873 check_mathfunc llrintf
2874 check_mathfunc log2
2875 check_mathfunc log2f
2876 check_mathfunc lrint
2877 check_mathfunc lrintf
2878 check_mathfunc round
2879 check_mathfunc roundf
2880 check_mathfunc trunc
2881 check_mathfunc truncf
2882
2883 # these are off by default, so fail if requested and not available
2884 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2885 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2886 enabled libdirac   && require_pkg_config dirac                          \
2887     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2888     "dirac_decoder_init dirac_encoder_init"
2889 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2890 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2891 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2892 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2893 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2894 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2895 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2896 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2897 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2898 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2899 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2900 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2901 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2902 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2903 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2904 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2905 enabled libvpx     && {
2906     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2907                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2908     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2909                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2910 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2911                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
2912                         die "ERROR: libx264 version must be >= 0.118."; }
2913 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2914 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2915 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2916
2917 # libdc1394 check
2918 if enabled libdc1394; then
2919     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2920         enable libdc1394_2; } ||
2921     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2922         enable libdc1394_1; } ||
2923     die "ERROR: No version of libdc1394 found "
2924 fi
2925
2926 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2927     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2928     enable sdl &&
2929     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2930 fi
2931
2932 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2933
2934 check_header linux/fb.h
2935 check_header linux/videodev.h
2936 check_header linux/videodev2.h
2937 check_header sys/videoio.h
2938
2939 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2940 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2941 # w32api 3.12 had it defined wrong
2942 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2943
2944 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2945 { check_header dev/bktr/ioctl_meteor.h &&
2946   check_header dev/bktr/ioctl_bt848.h; } ||
2947 { check_header machine/ioctl_meteor.h &&
2948   check_header machine/ioctl_bt848.h; } ||
2949 { check_header dev/video/meteor/ioctl_meteor.h &&
2950   check_header dev/video/bktr/ioctl_bt848.h; } ||
2951 check_header dev/ic/bt8xx.h
2952
2953 check_header sndio.h
2954 check_header sys/soundcard.h
2955 check_header soundcard.h
2956
2957 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2958
2959 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
2960
2961 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2962
2963 enabled libcdio &&
2964     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open "-lcdio_paranoia -lcdio_cdda -lcdio"
2965
2966 enabled x11grab                         &&
2967 check_header X11/Xlib.h                 &&
2968 check_header X11/extensions/XShm.h      &&
2969 check_header X11/extensions/Xfixes.h    &&
2970 check_func XOpenDisplay -lX11           &&
2971 check_func XShmCreateImage -lX11 -lXext &&
2972 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2973
2974 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2975 check_cpp_condition \
2976     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
2977     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
2978       disable vdpau; }
2979 fi
2980
2981 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
2982
2983 # add some useful compiler flags if supported
2984 check_cflags -Wdeclaration-after-statement
2985 check_cflags -Wall
2986 check_cflags -Wno-parentheses
2987 check_cflags -Wno-switch
2988 check_cflags -Wno-format-zero-length
2989 check_cflags -Wdisabled-optimization
2990 check_cflags -Wpointer-arith
2991 check_cflags -Wredundant-decls
2992 check_cflags -Wno-pointer-sign
2993 check_cflags -Wcast-qual
2994 check_cflags -Wwrite-strings
2995 check_cflags -Wtype-limits
2996 check_cflags -Wundef
2997 check_cflags -Wmissing-prototypes
2998 check_cflags -Wstrict-prototypes
2999 enabled extra_warnings && check_cflags -Winline
3000
3001 # add some linker flags
3002 check_ldflags -Wl,--warn-common
3003 check_ldflags -Wl,-rpath-link=libpostproc:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil
3004 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3005
3006 echo "X{};" > $TMPV
3007 if test_ldflags -Wl,--version-script,$TMPV; then
3008     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3009     check_cc <<EOF && enable symver_asm_label
3010 void ff_foo(void) __asm__ ("av_foo@VERSION");
3011 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3012 EOF
3013     check_cc <<EOF && enable symver_gnu_asm
3014 __asm__(".symver ff_foo,av_foo@VERSION");
3015 void ff_foo(void) {}
3016 EOF
3017 fi
3018
3019 if [ -n "$optflags" ]; then
3020     add_cflags $optflags
3021 elif enabled small; then
3022     add_cflags $size_cflags
3023 elif enabled optimizations; then
3024     add_cflags $speed_cflags
3025 else
3026     add_cflags $noopt_cflags
3027 fi
3028 check_cflags -fno-math-errno
3029 check_cflags -fno-signed-zeros
3030
3031 if enabled icc; then
3032     # Just warnings, no remarks
3033     check_cflags -w1
3034     # -wd: Disable following warnings
3035     # 144, 167, 556: -Wno-pointer-sign
3036     # 1292: attribute "foo" ignored
3037     # 10006: ignoring unknown option -fno-signed-zeros
3038     # 10148: ignoring unknown option -Wno-parentheses
3039     # 10156: ignoring option '-W'; no argument required
3040     check_cflags -wd144,167,556,1292,10006,10148,10156
3041     # 11030: Warning unknown option --as-needed
3042     # 10156: ignoring option '-export'; no argument required
3043     check_ldflags -wd10156,11030
3044     # Allow to compile with optimizations
3045     check_ldflags -march=$cpu
3046     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3047     enable ebp_available
3048     if enabled x86_32; then
3049         test ${icc_version%%.*} -ge 11 && \
3050             check_cflags -falign-stack=maintain-16-byte || \
3051             disable aligned_stack
3052     fi
3053 elif enabled ccc; then
3054     # disable some annoying warnings
3055     add_cflags -msg_disable cvtu32to64
3056     add_cflags -msg_disable embedcomment
3057     add_cflags -msg_disable needconstext
3058     add_cflags -msg_disable nomainieee
3059     add_cflags -msg_disable ptrmismatch1
3060     add_cflags -msg_disable unreachcode
3061 elif enabled gcc; then
3062     check_cflags -fno-tree-vectorize
3063     check_cflags -Werror=implicit-function-declaration
3064     check_cflags -Werror=missing-prototypes
3065 elif enabled llvm_gcc; then
3066     check_cflags -mllvm -stack-alignment=16
3067 elif enabled clang; then
3068     check_cflags -mllvm -stack-alignment=16
3069     check_cflags -Qunused-arguments
3070 elif enabled armcc; then
3071     # 2523: use of inline assembler is deprecated
3072     add_cflags -W${armcc_opt},--diag_suppress=2523
3073     add_cflags -W${armcc_opt},--diag_suppress=1207
3074     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3075     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3076     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3077     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3078 elif enabled tms470; then
3079     add_cflags -pds=824 -pds=837
3080 elif enabled pathscale; then
3081     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3082 fi
3083
3084 enabled_any $THREADS_LIST      && enable threads
3085
3086 check_deps $CONFIG_LIST       \
3087            $CONFIG_EXTRA      \
3088            $HAVE_LIST         \
3089            $DECODER_LIST      \
3090            $ENCODER_LIST      \
3091            $HWACCEL_LIST      \
3092            $PARSER_LIST       \
3093            $BSF_LIST          \
3094            $DEMUXER_LIST      \
3095            $MUXER_LIST        \
3096            $FILTER_LIST       \
3097            $INDEV_LIST        \
3098            $OUTDEV_LIST       \
3099            $PROTOCOL_LIST     \
3100            $ACODEC_TESTS      \
3101            $VCODEC_TESTS      \
3102            $LAVF_TESTS        \
3103            $LAVFI_TESTS       \
3104            $SEEK_TESTS        \
3105
3106 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3107
3108 ! enabled_any memalign posix_memalign malloc_aligned &&
3109     enabled_any $need_memalign && enable memalign_hack
3110
3111 echo "install prefix            $prefix"
3112 echo "source path               $source_path"
3113 echo "C compiler                $cc"
3114 echo "ARCH                      $arch ($cpu)"
3115 if test "$build_suffix" != ""; then
3116     echo "build suffix              $build_suffix"
3117 fi
3118 if test "$extra_version" != ""; then
3119     echo "version string suffix     $extra_version"
3120 fi
3121 echo "big-endian                ${bigendian-no}"
3122 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3123 if enabled x86; then
3124     echo "${yasmexe}                      ${yasm-no}"
3125     echo "MMX enabled               ${mmx-no}"
3126     echo "MMX2 enabled              ${mmx2-no}"
3127     echo "3DNow! enabled            ${amd3dnow-no}"
3128     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3129     echo "SSE enabled               ${sse-no}"
3130     echo "SSSE3 enabled             ${ssse3-no}"
3131     echo "AVX enabled               ${avx-no}"
3132     echo "CMOV enabled              ${cmov-no}"
3133     echo "CMOV is fast              ${fast_cmov-no}"
3134     echo "EBX available             ${ebx_available-no}"
3135     echo "EBP available             ${ebp_available-no}"
3136 fi
3137 if enabled arm; then
3138     echo "ARMv5TE enabled           ${armv5te-no}"
3139     echo "ARMv6 enabled             ${armv6-no}"
3140     echo "ARMv6T2 enabled           ${armv6t2-no}"
3141     echo "ARM VFP enabled           ${armvfp-no}"
3142     echo "IWMMXT enabled            ${iwmmxt-no}"
3143     echo "NEON enabled              ${neon-no}"
3144 fi
3145 if enabled mips; then
3146     echo "MMI enabled               ${mmi-no}"
3147 fi
3148 if enabled ppc; then
3149     echo "AltiVec enabled           ${altivec-no}"
3150     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3151     echo "dcbzl available           ${dcbzl-no}"
3152 fi
3153 if enabled sparc; then
3154     echo "VIS enabled               ${vis-no}"
3155 fi
3156 echo "debug symbols             ${debug-no}"
3157 echo "optimize for size         ${small-no}"
3158 echo "optimizations             ${optimizations-no}"
3159 echo "static                    ${static-no}"
3160 echo "shared                    ${shared-no}"
3161 echo "postprocessing support    ${postproc-no}"
3162 echo "new filter support        ${avfilter-no}"
3163 echo "network support           ${network-no}"
3164 echo "threading support         ${thread_type-no}"
3165 echo "SDL support               ${sdl-no}"
3166 echo "Sun medialib support      ${mlib-no}"
3167 echo "libdxva2 enabled          ${dxva2-no}"
3168 echo "libva enabled             ${vaapi-no}"
3169 echo "libvdpau enabled          ${vdpau-no}"
3170 echo "AVISynth enabled          ${avisynth-no}"
3171 echo "frei0r enabled            ${frei0r-no}"
3172 echo "libcdio support           ${libcdio-no}"
3173 echo "libdc1394 support         ${libdc1394-no}"
3174 echo "libdirac enabled          ${libdirac-no}"
3175 echo "libfaac enabled           ${libfaac-no}"
3176 echo "libgsm enabled            ${libgsm-no}"
3177 echo "libmp3lame enabled        ${libmp3lame-no}"
3178 echo "libnut enabled            ${libnut-no}"
3179 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3180 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3181 echo "libopencv support         ${libopencv-no}"
3182 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3183 echo "librtmp enabled           ${librtmp-no}"
3184 echo "libschroedinger enabled   ${libschroedinger-no}"
3185 echo "libspeex enabled          ${libspeex-no}"
3186 echo "libtheora enabled         ${libtheora-no}"
3187 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3188 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3189 echo "libvorbis enabled         ${libvorbis-no}"
3190 echo "libvpx enabled            ${libvpx-no}"
3191 echo "libx264 enabled           ${libx264-no}"
3192 echo "libxavs enabled           ${libxavs-no}"
3193 echo "libxvid enabled           ${libxvid-no}"
3194 echo "zlib enabled              ${zlib-no}"
3195 echo "bzlib enabled             ${bzlib-no}"
3196 echo
3197
3198 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3199     echo "Enabled ${type}s:"
3200     eval list=\$$(toupper $type)_LIST
3201     print_enabled '_*' $list | sort | pr -r -3 -t
3202     echo
3203 done
3204
3205 license="LGPL version 2.1 or later"
3206 if enabled nonfree; then
3207     license="nonfree and unredistributable"
3208 elif enabled gplv3; then
3209     license="GPL version 3 or later"
3210 elif enabled lgplv3; then
3211     license="LGPL version 3 or later"
3212 elif enabled gpl; then
3213     license="GPL version 2 or later"
3214 fi
3215
3216 echo "License: $license"
3217
3218 echo "Creating config.mak and config.h..."
3219
3220 test -e Makefile || $ln_s "$source_path/Makefile" .
3221
3222 config_files="$TMPH config.mak"
3223
3224 cat > config.mak <<EOF
3225 # Automatically generated by configure - do not modify!
3226 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3227 prefix=$prefix
3228 LIBDIR=\$(DESTDIR)$libdir
3229 SHLIBDIR=\$(DESTDIR)$shlibdir
3230 INCDIR=\$(DESTDIR)$incdir
3231 BINDIR=\$(DESTDIR)$bindir
3232 DATADIR=\$(DESTDIR)$datadir
3233 MANDIR=\$(DESTDIR)$mandir
3234 SRC_PATH=$source_path
3235 CC_IDENT=$cc_ident
3236 ARCH=$arch
3237 CC=$cc
3238 AS=$as
3239 LD=$ld
3240 DEPCC=$dep_cc
3241 YASM=$yasmexe
3242 YASMDEP=$yasmexe
3243 AR=$ar
3244 RANLIB=$ranlib
3245 LN_S=$ln_s
3246 CPPFLAGS=$CPPFLAGS
3247 CFLAGS=$CFLAGS
3248 ASFLAGS=$ASFLAGS
3249 AS_O=$CC_O
3250 CC_O=$CC_O
3251 DLLTOOL=$dlltool
3252 LDFLAGS=$LDFLAGS
3253 AVSERVERLDFLAGS=$AVSERVERLDFLAGS
3254 SHFLAGS=$SHFLAGS
3255 YASMFLAGS=$YASMFLAGS
3256 BUILDSUF=$build_suffix
3257 FULLNAME=$FULLNAME
3258 LIBPREF=$LIBPREF
3259 LIBSUF=$LIBSUF
3260 LIBNAME=$LIBNAME
3261 SLIBPREF=$SLIBPREF
3262 SLIBSUF=$SLIBSUF
3263 EXESUF=$EXESUF
3264 EXTRA_VERSION=$extra_version
3265 DEPFLAGS=$DEPFLAGS
3266 CCDEP=$CCDEP
3267 ASDEP=$ASDEP
3268 CC_DEPFLAGS=$CC_DEPFLAGS
3269 AS_DEPFLAGS=$AS_DEPFLAGS
3270 HOSTCC=$host_cc
3271 HOSTCFLAGS=$host_cflags
3272 HOSTEXESUF=$HOSTEXESUF
3273 HOSTLDFLAGS=$host_ldflags
3274 HOSTLIBS=$host_libs
3275 TARGET_EXEC=$target_exec
3276 TARGET_PATH=$target_path
3277 SDL_LIBS=$sdl_libs
3278 SDL_CFLAGS=$sdl_cflags
3279 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3280 EXTRALIBS=$extralibs
3281 INSTALL=install
3282 LIBTARGET=${LIBTARGET}
3283 SLIBNAME=${SLIBNAME}
3284 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3285 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3286 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3287 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3288 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3289 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3290 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3291 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3292 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3293 EOF
3294
3295 get_version(){
3296     name=$1
3297     file=$source_path/$2
3298     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3299     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3300     lcname=$(tolower $name)
3301     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3302     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3303 }
3304
3305 get_version LIBSWSCALE  libswscale/swscale.h
3306 get_version LIBPOSTPROC libpostproc/postprocess.h
3307 get_version LIBAVCODEC  libavcodec/version.h
3308 get_version LIBAVDEVICE libavdevice/avdevice.h
3309 get_version LIBAVFORMAT libavformat/version.h
3310 get_version LIBAVUTIL   libavutil/avutil.h
3311 get_version LIBAVFILTER libavfilter/avfilter.h
3312
3313 cat > $TMPH <<EOF
3314 /* Automatically generated by configure - do not modify! */
3315 #ifndef LIBAV_CONFIG_H
3316 #define LIBAV_CONFIG_H
3317 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3318 #define LIBAV_LICENSE "$(c_escape $license)"
3319 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
3320 #define CC_TYPE "$cc_type"
3321 #define CC_VERSION $cc_version
3322 #define restrict $_restrict
3323 #define EXTERN_PREFIX "${extern_prefix}"
3324 #define EXTERN_ASM ${extern_prefix}
3325 #define SLIBSUF "$SLIBSUF"
3326 EOF
3327
3328 test -n "$malloc_prefix" &&
3329     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3330
3331 if enabled small || disabled optimizations; then
3332     echo "#undef  av_always_inline"  >> $TMPH
3333     if enabled small; then
3334         echo "#define av_always_inline inline"  >> $TMPH
3335     else
3336         echo "#define av_always_inline av_unused"  >> $TMPH
3337     fi
3338 fi
3339
3340 if enabled yasm; then
3341     append config_files $TMPASM
3342     printf '' >$TMPASM
3343 fi
3344
3345 print_config ARCH_   "$config_files" $ARCH_LIST
3346 print_config HAVE_   "$config_files" $HAVE_LIST
3347 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3348                                      $CONFIG_EXTRA      \
3349                                      $DECODER_LIST      \
3350                                      $ENCODER_LIST      \
3351                                      $HWACCEL_LIST      \
3352                                      $PARSER_LIST       \
3353                                      $BSF_LIST          \
3354                                      $DEMUXER_LIST      \
3355                                      $MUXER_LIST        \
3356                                      $FILTER_LIST       \
3357                                      $PROTOCOL_LIST     \
3358                                      $INDEV_LIST        \
3359                                      $OUTDEV_LIST       \
3360
3361 cat >>config.mak <<EOF
3362 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3363 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3364 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3365 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3366 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3367 EOF
3368
3369 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3370
3371 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3372 cp_if_changed $TMPH config.h
3373 touch .config
3374
3375 enabled yasm && cp_if_changed $TMPASM config.asm
3376
3377 cat > $TMPH <<EOF
3378 /* Generated by ffconf */
3379 #ifndef AVUTIL_AVCONFIG_H
3380 #define AVUTIL_AVCONFIG_H
3381 EOF
3382
3383 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3384
3385 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3386
3387 cp_if_changed $TMPH libavutil/avconfig.h
3388
3389 test -n "$WARNINGS" && printf "\n$WARNINGS"
3390
3391 # build pkg-config files
3392
3393 pkgconfig_generate(){
3394 name=$1
3395 shortname=${name#lib}${build_suffix}
3396 comment=$2
3397 version=$3
3398 libs=$4
3399 requires=$5
3400 enabled ${name#lib} || return 0
3401 mkdir -p $name
3402 cat <<EOF > $name/$name.pc
3403 prefix=$prefix
3404 exec_prefix=\${prefix}
3405 libdir=$libdir
3406 includedir=$incdir
3407
3408 Name: $name
3409 Description: $comment
3410 Version: $version
3411 Requires: $(enabled shared || echo $requires)
3412 Requires.private: $(enabled shared && echo $requires)
3413 Conflicts:
3414 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3415 Libs.private: $(enabled shared && echo $libs)
3416 Cflags: -I\${includedir}
3417 EOF
3418 cat <<EOF > $name/$name-uninstalled.pc
3419 prefix=
3420 exec_prefix=
3421 libdir=\${pcfiledir}
3422 includedir=${source_path}
3423
3424 Name: $name
3425 Description: $comment
3426 Version: $version
3427 Requires: $requires
3428 Conflicts:
3429 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3430 Cflags: -I\${includedir}
3431 EOF
3432 }
3433
3434 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3435 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3436 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3437 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3438 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3439 pkgconfig_generate libpostproc "Libav postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3440 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"