configure

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 show_help(){
  58 cat <<EOF
  59 Usage: configure [options]
  60 Options: [defaults in brackets after descriptions]
  61
  62 Standard options:
  63   --help                   print this message
  64   --logfile=FILE           log tests and output to FILE [config.log]
  65   --disable-logging        do not log configure debug information
  66   --prefix=PREFIX          install in PREFIX [$prefix]
  67   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  68   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  69   --libdir=DIR             install libs in DIR [PREFIX/lib]
  70   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  71   --incdir=DIR             install includes in DIR [PREFIX/include]
  72   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  73
  74 Configuration options:
  75   --disable-static         do not build static libraries [no]
  76   --enable-shared          build shared libraries [no]
  77   --enable-gpl             allow use of GPL code, the resulting libs
  78                            and binaries will be under GPL [no]
  79   --enable-version3        upgrade (L)GPL to version 3 [no]
  80   --enable-nonfree         allow use of nonfree code, the resulting libs
  81                            and binaries will be unredistributable [no]
  82   --disable-doc            do not build documentation
  83   --disable-ffmpeg         disable ffmpeg build
  84   --disable-ffplay         disable ffplay build
  85   --disable-ffprobe        disable ffprobe build
  86   --disable-ffserver       disable ffserver build
  87   --disable-avdevice       disable libavdevice build
  88   --disable-avcodec        disable libavcodec build
  89   --disable-avformat       disable libavformat build
  90   --disable-swscale        disable libswscale build
  91   --disable-postproc       disable libpostproc build
  92   --disable-avfilter       disable video filter support [no]
  93   --disable-pthreads       disable pthreads [auto]
  94   --enable-w32threads      use Win32 threads [no]
  95   --enable-x11grab         enable X11 grabbing [no]
  96   --disable-network        disable network support [no]
  97   --enable-gray            enable full grayscale support (slower color)
  98   --disable-swscale-alpha  disable alpha channel support in swscale
  99   --disable-fastdiv        disable table-based division
 100   --enable-small           optimize for size instead of speed
 101   --disable-aandct         disable AAN DCT code
 102   --disable-dct            disable DCT code
 103   --disable-fft            disable FFT code
 104   --disable-golomb         disable Golomb code
 105   --disable-huffman        disable Huffman code
 106   --disable-lpc            disable LPC code
 107   --disable-mdct           disable MDCT code
 108   --disable-rdft           disable RDFT code
 109   --disable-vaapi          disable VAAPI code
 110   --disable-vdpau          disable VDPAU code
 111   --disable-dxva2          disable DXVA2 code
 112   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 113   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 114   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 115   --disable-everything     disable all components listed below
 116   --disable-encoder=NAME   disable encoder NAME
 117   --enable-encoder=NAME    enable encoder NAME
 118   --disable-encoders       disable all encoders
 119   --disable-decoder=NAME   disable decoder NAME
 120   --enable-decoder=NAME    enable decoder NAME
 121   --disable-decoders       disable all decoders
 122   --disable-hwaccel=NAME   disable hwaccel NAME
 123   --enable-hwaccel=NAME    enable hwaccel NAME
 124   --disable-hwaccels       disable all hwaccels
 125   --disable-muxer=NAME     disable muxer NAME
 126   --enable-muxer=NAME      enable muxer NAME
 127   --disable-muxers         disable all muxers
 128   --disable-demuxer=NAME   disable demuxer NAME
 129   --enable-demuxer=NAME    enable demuxer NAME
 130   --disable-demuxers       disable all demuxers
 131   --enable-parser=NAME     enable parser NAME
 132   --disable-parser=NAME    disable parser NAME
 133   --disable-parsers        disable all parsers
 134   --enable-bsf=NAME        enable bitstream filter NAME
 135   --disable-bsf=NAME       disable bitstream filter NAME
 136   --disable-bsfs           disable all bitstream filters
 137   --enable-protocol=NAME   enable protocol NAME
 138   --disable-protocol=NAME  disable protocol NAME
 139   --disable-protocols      disable all protocols
 140   --disable-indev=NAME     disable input device NAME
 141   --disable-outdev=NAME    disable output device NAME
 142   --disable-indevs         disable input devices
 143   --disable-outdevs        disable output devices
 144   --disable-devices        disable all devices
 145   --enable-filter=NAME     enable filter NAME
 146   --disable-filter=NAME    disable filter NAME
 147   --disable-filters        disable all filters
 148   --list-decoders          show all available decoders
 149   --list-encoders          show all available encoders
 150   --list-hwaccels          show all available hardware accelerators
 151   --list-muxers            show all available muxers
 152   --list-demuxers          show all available demuxers
 153   --list-parsers           show all available parsers
 154   --list-protocols         show all available protocols
 155   --list-bsfs              show all available bitstream filters
 156   --list-indevs            show all available input devices
 157   --list-outdevs           show all available output devices
 158   --list-filters           show all available filters
 159
 160 External library support:
 161   --enable-avisynth        enable reading of AVISynth script files [no]
 162   --enable-bzlib           enable bzlib [autodetect]
 163   --enable-frei0r          enable frei0r video filtering
 164   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 165   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 166   --enable-libopencv       enable video filtering via libopencv [no]
 167   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 168                            and libraw1394 [no]
 169   --enable-libdirac        enable Dirac support via libdirac [no]
 170   --enable-libfaac         enable FAAC support via libfaac [no]
 171   --enable-libfreetype     enable libfreetype [no]
 172   --enable-libgsm          enable GSM support via libgsm [no]
 173   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 174   --enable-libnut          enable NUT (de)muxing via libnut,
 175                            native (de)muxer exists [no]
 176   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
 177   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 178   --enable-libschroedinger enable Dirac support via libschroedinger [no]
 179   --enable-libspeex        enable Speex decoding via libspeex [no]
 180   --enable-libtheora       enable Theora encoding via libtheora [no]
 181   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 182   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 183   --enable-libvorbis       enable Vorbis encoding via libvorbis,
 184                            native implementation exists [no]
 185   --enable-libvpx          enable VP8 support via libvpx [no]
 186   --enable-libx264         enable H.264 encoding via x264 [no]
 187   --enable-libxavs         enable AVS encoding via xavs [no]
 188   --enable-libxvid         enable Xvid encoding via xvidcore,
 189                            native MPEG-4/Xvid encoder exists [no]
 190   --enable-mlib            enable Sun medialib [no]
 191   --enable-zlib            enable zlib [autodetect]
 192
 193 Advanced options (experts only):
 194   --source-path=PATH       path to source code [$source_path]
 195   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 196   --enable-cross-compile   assume a cross-compiler is used
 197   --sysroot=PATH           root of cross-build tree
 198   --sysinclude=PATH        location of cross-build system headers
 199   --target-os=OS           compiler targets OS [$target_os]
 200   --target-exec=CMD        command to run executables on target
 201   --target-path=DIR        path to view of build directory on target
 202   --nm=NM                  use nm tool
 203   --ar=AR                  use archive tool AR [$ar_default]
 204   --as=AS                  use assembler AS [$as_default]
 205   --cc=CC                  use C compiler CC [$cc_default]
 206   --ld=LD                  use linker LD
 207   --host-cc=HOSTCC         use host C compiler HOSTCC
 208   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 209   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 210   --host-libs=HLIBS        use libs HLIBS when linking for host
 211   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 212   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 213   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 214   --extra-version=STRING   version string suffix []
 215   --build-suffix=SUFFIX    library name suffix []
 216   --arch=ARCH              select architecture [$arch]
 217   --cpu=CPU                select the minimum required CPU (affects
 218                            instruction selection, may crash on older CPUs)
 219   --disable-asm            disable all assembler optimizations
 220   --disable-altivec        disable AltiVec optimizations
 221   --disable-amd3dnow       disable 3DNow! optimizations
 222   --disable-amd3dnowext    disable 3DNow! extended optimizations
 223   --disable-mmx            disable MMX optimizations
 224   --disable-mmx2           disable MMX2 optimizations
 225   --disable-sse            disable SSE optimizations
 226   --disable-ssse3          disable SSSE3 optimizations
 227   --disable-avx            disable AVX optimizations
 228   --disable-armv5te        disable armv5te optimizations
 229   --disable-armv6          disable armv6 optimizations
 230   --disable-armv6t2        disable armv6t2 optimizations
 231   --disable-armvfp         disable ARM VFP optimizations
 232   --disable-iwmmxt         disable iwmmxt optimizations
 233   --disable-mmi            disable MMI optimizations
 234   --disable-neon           disable neon optimizations
 235   --disable-vis            disable VIS optimizations
 236   --disable-yasm           disable use of yasm assembler
 237   --enable-pic             build position-independent code
 238   --malloc-prefix=PFX      prefix malloc and related names with PFX
 239   --enable-sram            allow use of on-chip SRAM
 240   --disable-symver         disable symbol versioning
 241
 242 Developer options (useful when working on Libav itself):
 243   --disable-debug          disable debugging symbols
 244   --enable-debug=LEVEL     set the debug level [$debuglevel]
 245   --disable-optimizations  disable compiler optimizations
 246   --enable-extra-warnings  enable more compiler warnings
 247   --samples=PATH           location of test samples for FATE, if not set use
 248                            \$FATE_SAMPLES at make invocation time.
 249
 250 NOTE: Object files are built at the place where configure is launched.
 251 EOF
 252   exit 0
 253 }
 254
 255 quotes='""'
 256
 257 log(){
 258     echo "$@" >> $logfile
 259 }
 260
 261 log_file(){
 262     log BEGIN $1
 263     pr -n -t $1 >> $logfile
 264     log END $1
 265 }
 266
 267 echolog(){
 268     log "$@"
 269     echo "$@"
 270 }
 271
 272 warn(){
 273     log "WARNING: $*"
 274     WARNINGS="${WARNINGS}WARNING: $*\n"
 275 }
 276
 277 die(){
 278     echolog "$@"
 279     cat <<EOF
 280
 281 If you think configure made a mistake, make sure you are using the latest
 282 version from Git.  If the latest version fails, report the problem to the
 283 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
 284 EOF
 285     if disabled logging; then
 286         cat <<EOF
 287 Rerun configure with logging enabled (do not use --disable-logging), and
 288 include the log this produces with your report.
 289 EOF
 290     else
 291 cat <<EOF
 292 Include the log file "$logfile" produced by configure as this will help
 293 solving the problem.
 294 EOF
 295     fi
 296     exit 1
 297 }
 298
 299 # Avoid locale weirdness, besides we really just want to translate ASCII.
 300 toupper(){
 301     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 302 }
 303
 304 tolower(){
 305     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 306 }
 307
 308 c_escape(){
 309     echo "$*" | sed 's/["\\]/\\\0/g'
 310 }
 311
 312 sh_quote(){
 313     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 314     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 315     echo "$v"
 316 }
 317
 318 cleanws(){
 319     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 320 }
 321
 322 filter(){
 323     pat=$1
 324     shift
 325     for v; do
 326         eval "case $v in $pat) echo $v ;; esac"
 327     done
 328 }
 329
 330 filter_out(){
 331     pat=$1
 332     shift
 333     for v; do
 334         eval "case $v in $pat) ;; *) echo $v ;; esac"
 335     done
 336 }
 337
 338 map(){
 339     m=$1
 340     shift
 341     for v; do eval $m; done
 342 }
 343
 344 set_all(){
 345     value=$1
 346     shift
 347     for var in $*; do
 348         eval $var=$value
 349     done
 350 }
 351
 352 set_weak(){
 353     value=$1
 354     shift
 355     for var; do
 356         eval : \${$var:=$value}
 357     done
 358 }
 359
 360 set_safe(){
 361     var=$1
 362     shift
 363     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 364 }
 365
 366 get_safe(){
 367     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 368 }
 369
 370 pushvar(){
 371     for var in $*; do
 372         eval level=\${${var}_level:=0}
 373         eval ${var}_${level}="\$$var"
 374         eval ${var}_level=$(($level+1))
 375     done
 376 }
 377
 378 popvar(){
 379     for var in $*; do
 380         eval level=\${${var}_level:-0}
 381         test $level = 0 && continue
 382         eval level=$(($level-1))
 383         eval $var="\${${var}_${level}}"
 384         eval ${var}_level=$level
 385         eval unset ${var}_${level}
 386     done
 387 }
 388
 389 enable(){
 390     set_all yes $*
 391 }
 392
 393 disable(){
 394     set_all no $*
 395 }
 396
 397 enable_weak(){
 398     set_weak yes $*
 399 }
 400
 401 disable_weak(){
 402     set_weak no $*
 403 }
 404
 405 enable_safe(){
 406     for var; do
 407         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 408     done
 409 }
 410
 411 disable_safe(){
 412     for var; do
 413         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 414     done
 415 }
 416
 417 do_enable_deep(){
 418     for var; do
 419         enabled $var && continue
 420         eval sel="\$${var}_select"
 421         eval sgs="\$${var}_suggest"
 422         pushvar var sgs
 423         enable_deep $sel
 424         popvar sgs
 425         enable_deep_weak $sgs
 426         popvar var
 427     done
 428 }
 429
 430 enable_deep(){
 431     do_enable_deep $*
 432     enable $*
 433 }
 434
 435 enable_deep_weak(){
 436     do_enable_deep $*
 437     enable_weak $*
 438 }
 439
 440 enabled(){
 441     test "${1#!}" = "$1" && op== || op=!=
 442     eval test "x\$${1#!}" $op "xyes"
 443 }
 444
 445 disabled(){
 446     test "${1#!}" = "$1" && op== || op=!=
 447     eval test "x\$${1#!}" $op "xno"
 448 }
 449
 450 enabled_all(){
 451     for opt; do
 452         enabled $opt || return 1
 453     done
 454 }
 455
 456 disabled_all(){
 457     for opt; do
 458         disabled $opt || return 1
 459     done
 460 }
 461
 462 enabled_any(){
 463     for opt; do
 464         enabled $opt && return 0
 465     done
 466 }
 467
 468 disabled_any(){
 469     for opt; do
 470         disabled $opt && return 0
 471     done
 472     return 1
 473 }
 474
 475 set_default(){
 476     for opt; do
 477         eval : \${$opt:=\$${opt}_default}
 478     done
 479 }
 480
 481 is_in(){
 482     value=$1
 483     shift
 484     for var in $*; do
 485         [ $var = $value ] && return 0
 486     done
 487     return 1
 488 }
 489
 490 check_deps(){
 491     for cfg; do
 492         cfg="${cfg#!}"
 493         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 494         disabled ${cfg}_checking && continue
 495         enable ${cfg}_checking
 496
 497         eval dep_all="\$${cfg}_deps"
 498         eval dep_any="\$${cfg}_deps_any"
 499         eval dep_sel="\$${cfg}_select"
 500         eval dep_sgs="\$${cfg}_suggest"
 501         eval dep_ifa="\$${cfg}_if"
 502         eval dep_ifn="\$${cfg}_if_any"
 503
 504         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 505         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 506         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 507
 508         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 509         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 510         enabled_all  $dep_all || disable $cfg
 511         enabled_any  $dep_any || disable $cfg
 512         disabled_any $dep_sel && disable $cfg
 513
 514         if enabled $cfg; then
 515             eval dep_extralibs="\$${cfg}_extralibs"
 516             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 517             enable_deep $dep_sel
 518             enable_deep_weak $dep_sgs
 519         fi
 520
 521         disable ${cfg}_checking
 522     done
 523 }
 524
 525 print_config_h(){
 526     enabled $1 && v=1 || v=0
 527     echo "#define $2 $v"
 528 }
 529
 530 print_config_mak(){
 531     enabled $1 && v= || v=!
 532     echo "$v$2=yes"
 533 }
 534
 535 print_config_asm(){
 536     enabled $1 && echo "%define $2"
 537 }
 538
 539 print_config(){
 540     pfx=$1
 541     files=$2
 542     shift 2
 543     for cfg; do
 544         ucname="$(toupper $cfg)"
 545         for f in $files; do
 546             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
 547         done
 548     done
 549 }
 550
 551 print_enabled(){
 552     test "$1" = -n && end=" " && shift || end="\n"
 553     suf=$1
 554     shift
 555     for v; do
 556         enabled $v && printf "%s$end" ${v%$suf};
 557     done
 558 }
 559
 560 append(){
 561     var=$1
 562     shift
 563     eval "$var=\"\$$var $*\""
 564 }
 565
 566 prepend(){
 567     var=$1
 568     shift
 569     eval "$var=\"$* \$$var\""
 570 }
 571
 572 add_cppflags(){
 573     append CPPFLAGS $($filter_cppflags "$@")
 574 }
 575
 576 add_cflags(){
 577     append CFLAGS $($filter_cflags "$@")
 578 }
 579
 580 add_asflags(){
 581     append ASFLAGS $($filter_asflags "$@")
 582 }
 583
 584 add_ldflags(){
 585     append LDFLAGS "$@"
 586 }
 587
 588 add_extralibs(){
 589     prepend extralibs "$@"
 590 }
 591
 592 check_cmd(){
 593     log "$@"
 594     "$@" >> $logfile 2>&1
 595 }
 596
 597 check_cc(){
 598     log check_cc "$@"
 599     cat > $TMPC
 600     log_file $TMPC
 601     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
 602 }
 603
 604 check_cpp(){
 605     log check_cpp "$@"
 606     cat > $TMPC
 607     log_file $TMPC
 608     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
 609 }
 610
 611 check_as(){
 612     log check_as "$@"
 613     cat > $TMPC
 614     log_file $TMPC
 615     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
 616 }
 617
 618 check_asm(){
 619     log check_asm "$@"
 620     name="$1"
 621     code="$2"
 622     shift 2
 623     disable $name
 624     check_as "$@" <<EOF && enable $name
 625 void foo(void){ __asm__ volatile($code); }
 626 EOF
 627 }
 628
 629 check_yasm(){
 630     log check_yasm "$@"
 631     echo "$1" > $TMPS
 632     log_file $TMPS
 633     shift 1
 634     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 635 }
 636
 637 check_ld(){
 638     log check_ld "$@"
 639     flags=''
 640     libs=''
 641     for f; do
 642         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
 643     done
 644     check_cc $($filter_cflags $flags) || return
 645     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
 646 }
 647
 648 check_cppflags(){
 649     log check_cppflags "$@"
 650     set -- $($filter_cppflags "$@")
 651     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 652 int x;
 653 EOF
 654 }
 655
 656 check_cflags(){
 657     log check_cflags "$@"
 658     set -- $($filter_cflags "$@")
 659     check_cc "$@" <<EOF && append CFLAGS "$@"
 660 int x;
 661 EOF
 662 }
 663
 664 test_ldflags(){
 665     log test_ldflags "$@"
 666     check_ld "$@" <<EOF
 667 int main(void){ return 0; }
 668 EOF
 669 }
 670
 671 check_ldflags(){
 672     log check_ldflags "$@"
 673     test_ldflags "$@" && add_ldflags "$@"
 674 }
 675
 676 check_header(){
 677     log check_header "$@"
 678     header=$1
 679     shift
 680     disable_safe $header
 681     check_cpp "$@" <<EOF && enable_safe $header
 682 #include <$header>
 683 int x;
 684 EOF
 685 }
 686
 687 check_func(){
 688     log check_func "$@"
 689     func=$1
 690     shift
 691     disable $func
 692     check_ld "$@" <<EOF && enable $func
 693 extern int $func();
 694 int main(void){ $func(); }
 695 EOF
 696 }
 697
 698 check_mathfunc(){
 699     log check_mathfunc "$@"
 700     func=$1
 701     shift
 702     disable $func
 703     check_ld "$@" <<EOF && enable $func
 704 #include <math.h>
 705 float foo(float f) { return $func(f); }
 706 int main(void){ return 0; }
 707 EOF
 708 }
 709
 710 check_func_headers(){
 711     log check_func_headers "$@"
 712     headers=$1
 713     funcs=$2
 714     shift 2
 715     {
 716         for hdr in $headers; do
 717             echo "#include <$hdr>"
 718         done
 719         for func in $funcs; do
 720             echo "long check_$func(void) { return (long) $func; }"
 721         done
 722         echo "int main(void) { return 0; }"
 723     } | check_ld "$@" && enable $funcs && enable_safe $headers
 724 }
 725
 726 check_cpp_condition(){
 727     log check_cpp_condition "$@"
 728     header=$1
 729     condition=$2
 730     shift 2
 731     check_cpp $($filter_cppflags "$@") <<EOF
 732 #include <$header>
 733 #if !($condition)
 734 #error "unsatisfied condition: $condition"
 735 #endif
 736 EOF
 737 }
 738
 739 check_lib(){
 740     log check_lib "$@"
 741     header="$1"
 742     func="$2"
 743     shift 2
 744     check_header $header && check_func $func "$@" && add_extralibs "$@"
 745 }
 746
 747 check_lib2(){
 748     log check_lib2 "$@"
 749     headers="$1"
 750     funcs="$2"
 751     shift 2
 752     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 753 }
 754
 755 check_pkg_config(){
 756     log check_pkg_config "$@"
 757     pkg="$1"
 758     headers="$2"
 759     funcs="$3"
 760     shift 3
 761     $pkg_config --exists $pkg || return
 762     pkg_cflags=$($pkg_config --cflags $pkg)
 763     pkg_libs=$($pkg_config --libs $pkg)
 764     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 765         set_safe ${pkg}_cflags $pkg_cflags   &&
 766         set_safe ${pkg}_libs   $pkg_libs
 767 }
 768
 769 check_exec(){
 770     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 771 }
 772
 773 check_exec_crash(){
 774     code=$(cat)
 775
 776     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 777     # are safe but may not be available everywhere.  Thus we use
 778     # raise(SIGTERM) instead.  The check is run in a subshell so we
 779     # can redirect the "Terminated" message from the shell.  SIGBUS
 780     # is not defined by standard C so it is used conditionally.
 781
 782     (check_exec "$@") >> $logfile 2>&1 <<EOF
 783 #include <signal.h>
 784 static void sighandler(int sig){
 785     raise(SIGTERM);
 786 }
 787 int main(void){
 788     signal(SIGILL, sighandler);
 789     signal(SIGFPE, sighandler);
 790     signal(SIGSEGV, sighandler);
 791 #ifdef SIGBUS
 792     signal(SIGBUS, sighandler);
 793 #endif
 794     { $code }
 795 }
 796 EOF
 797 }
 798
 799 check_type(){
 800     log check_type "$@"
 801     headers=$1
 802     type=$2
 803     shift 2
 804     disable_safe "$type"
 805     incs=""
 806     for hdr in $headers; do
 807         incs="$incs
 808 #include <$hdr>"
 809     done
 810     check_cc "$@" <<EOF && enable_safe "$type"
 811 $incs
 812 $type v;
 813 EOF
 814 }
 815
 816 check_struct(){
 817     log check_type "$@"
 818     headers=$1
 819     struct=$2
 820     member=$3
 821     shift 3
 822     disable_safe "${struct}_${member}"
 823     incs=""
 824     for hdr in $headers; do
 825         incs="$incs
 826 #include <$hdr>"
 827     done
 828     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
 829 $incs
 830 const void *p = &(($struct *)0)->$member;
 831 EOF
 832 }
 833
 834 require(){
 835     name="$1"
 836     header="$2"
 837     func="$3"
 838     shift 3
 839     check_lib $header $func "$@" || die "ERROR: $name not found"
 840 }
 841
 842 require2(){
 843     name="$1"
 844     headers="$2"
 845     func="$3"
 846     shift 3
 847     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
 848 }
 849
 850 require_pkg_config(){
 851     pkg="$1"
 852     check_pkg_config "$@" || die "ERROR: $pkg not found"
 853     add_cflags    $(get_safe ${pkg}_cflags)
 854     add_extralibs $(get_safe ${pkg}_libs)
 855 }
 856
 857 check_host_cc(){
 858     log check_host_cc "$@"
 859     cat > $TMPC
 860     log_file $TMPC
 861     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
 862 }
 863
 864 check_host_cflags(){
 865     log check_host_cflags "$@"
 866     check_host_cc "$@" <<EOF && append host_cflags "$@"
 867 int x;
 868 EOF
 869 }
 870
 871 apply(){
 872     file=$1
 873     shift
 874     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
 875 }
 876
 877 cp_if_changed(){
 878     cmp -s "$1" "$2" &&
 879         echo "$2 is unchanged" ||
 880         cp -f "$1" "$2"
 881 }
 882
 883 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
 884 # system-dependent things.
 885
 886 COMPONENT_LIST="
 887     bsfs
 888     decoders
 889     demuxers
 890     encoders
 891     filters
 892     hwaccels
 893     indevs
 894     muxers
 895     outdevs
 896     parsers
 897     protocols
 898 "
 899
 900 CONFIG_LIST="
 901     $COMPONENT_LIST
 902     aandct
 903     ac3dsp
 904     avcodec
 905     avdevice
 906     avfilter
 907     avformat
 908     avisynth
 909     bzlib
 910     dct
 911     doc
 912     dwt
 913     dxva2
 914     fastdiv
 915     ffmpeg
 916     ffplay
 917     ffprobe
 918     ffserver
 919     fft
 920     frei0r
 921     golomb
 922     gpl
 923     gray
 924     h264dsp
 925     h264pred
 926     hardcoded_tables
 927     huffman
 928     libdc1394
 929     libdirac
 930     libfaac
 931     libfreetype
 932     libgsm
 933     libmp3lame
 934     libnut
 935     libopencore_amrnb
 936     libopencore_amrwb
 937     libopencv
 938     libopenjpeg
 939     librtmp
 940     libschroedinger
 941     libspeex
 942     libtheora
 943     libvo_aacenc
 944     libvo_amrwbenc
 945     libvorbis
 946     libvpx
 947     libx264
 948     libxavs
 949     libxvid
 950     lpc
 951     lsp
 952     mdct
 953     memalign_hack
 954     mlib
 955     mpegaudiodsp
 956     network
 957     nonfree
 958     pic
 959     postproc
 960     rdft
 961     rtpdec
 962     runtime_cpudetect
 963     shared
 964     sinewin
 965     small
 966     sram
 967     static
 968     swscale
 969     swscale_alpha
 970     vaapi
 971     vdpau
 972     version3
 973     x11grab
 974     zlib
 975 "
 976
 977 THREADS_LIST='
 978     pthreads
 979     w32threads
 980 '
 981
 982 ARCH_LIST='
 983     alpha
 984     arm
 985     avr32
 986     avr32_ap
 987     avr32_uc
 988     bfin
 989     ia64
 990     m68k
 991     mips
 992     mips64
 993     parisc
 994     ppc
 995     ppc64
 996     s390
 997     sh4
 998     sparc
 999     sparc64
1000     tomi
1001     x86
1002     x86_32
1003     x86_64
1004 '
1005
1006 ARCH_EXT_LIST='
1007     altivec
1008     amd3dnow
1009     amd3dnowext
1010     armv5te
1011     armv6
1012     armv6t2
1013     armvfp
1014     avx
1015     iwmmxt
1016     mmi
1017     mmx
1018     mmx2
1019     neon
1020     ppc4xx
1021     sse
1022     ssse3
1023     vfpv3
1024     vis
1025 '
1026
1027 HAVE_LIST_PUB='
1028     bigendian
1029     fast_unaligned
1030 '
1031
1032 HAVE_LIST="
1033     $ARCH_EXT_LIST
1034     $HAVE_LIST_PUB
1035     $THREADS_LIST
1036     aligned_stack
1037     alsa_asoundlib_h
1038     altivec_h
1039     arpa_inet_h
1040     attribute_may_alias
1041     attribute_packed
1042     bswap
1043     closesocket
1044     cmov
1045     dcbzl
1046     dev_bktr_ioctl_bt848_h
1047     dev_bktr_ioctl_meteor_h
1048     dev_ic_bt8xx_h
1049     dev_video_meteor_ioctl_meteor_h
1050     dev_video_bktr_ioctl_bt848_h
1051     dlfcn_h
1052     dlopen
1053     dos_paths
1054     ebp_available
1055     ebx_available
1056     exp2
1057     exp2f
1058     fast_64bit
1059     fast_clz
1060     fast_cmov
1061     fcntl
1062     fork
1063     getaddrinfo
1064     gethrtime
1065     GetProcessMemoryInfo
1066     GetProcessTimes
1067     getrusage
1068     gnu_as
1069     struct_rusage_ru_maxrss
1070     ibm_asm
1071     inet_aton
1072     inline_asm
1073     isatty
1074     ldbrx
1075     libdc1394_1
1076     libdc1394_2
1077     llrint
1078     llrintf
1079     local_aligned_16
1080     local_aligned_8
1081     localtime_r
1082     log2
1083     log2f
1084     loongson
1085     lrint
1086     lrintf
1087     lzo1x_999_compress
1088     machine_ioctl_bt848_h
1089     machine_ioctl_meteor_h
1090     malloc_h
1091     MapViewOfFile
1092     memalign
1093     mkstemp
1094     mmap
1095     pld
1096     posix_memalign
1097     round
1098     roundf
1099     sdl
1100     sdl_video_size
1101     setmode
1102     sndio_h
1103     socklen_t
1104     soundcard_h
1105     poll_h
1106     setrlimit
1107     strerror_r
1108     strtok_r
1109     struct_addrinfo
1110     struct_ipv6_mreq
1111     struct_sockaddr_in6
1112     struct_sockaddr_sa_len
1113     struct_sockaddr_storage
1114     symver
1115     symver_gnu_asm
1116     symver_asm_label
1117     sys_mman_h
1118     sys_resource_h
1119     sys_select_h
1120     sys_soundcard_h
1121     sys_videoio_h
1122     ten_operands
1123     threads
1124     trunc
1125     truncf
1126     vfp_args
1127     VirtualAlloc
1128     winsock2_h
1129     xform_asm
1130     xmm_clobbers
1131     yasm
1132 "
1133
1134 # options emitted with CONFIG_ prefix but not available on command line
1135 CONFIG_EXTRA="
1136     avutil
1137     gplv3
1138     lgplv3
1139 "
1140
1141 CMDLINE_SELECT="
1142     $ARCH_EXT_LIST
1143     $CONFIG_LIST
1144     $THREADS_LIST
1145     asm
1146     cross_compile
1147     debug
1148     extra_warnings
1149     logging
1150     optimizations
1151     symver
1152     yasm
1153 "
1154
1155 PATHS_LIST='
1156     bindir
1157     datadir
1158     incdir
1159     libdir
1160     mandir
1161     prefix
1162     shlibdir
1163 '
1164
1165 CMDLINE_SET="
1166     $PATHS_LIST
1167     ar
1168     arch
1169     as
1170     build_suffix
1171     cc
1172     cpu
1173     cross_prefix
1174     dep_cc
1175     extra_version
1176     host_cc
1177     host_cflags
1178     host_ldflags
1179     host_libs
1180     host_os
1181     ld
1182     logfile
1183     malloc_prefix
1184     nm
1185     pkg_config
1186     samples
1187     source_path
1188     sysinclude
1189     sysroot
1190     target_exec
1191     target_os
1192     target_path
1193 "
1194
1195 CMDLINE_APPEND="
1196     extra_cflags
1197 "
1198
1199 # code dependency declarations
1200
1201 # architecture extensions
1202
1203 armv5te_deps="arm"
1204 armv6_deps="arm"
1205 armv6t2_deps="arm"
1206 armvfp_deps="arm"
1207 iwmmxt_deps="arm"
1208 neon_deps="arm"
1209 vfpv3_deps="armvfp"
1210
1211 mmi_deps="mips"
1212
1213 altivec_deps="ppc"
1214 ppc4xx_deps="ppc"
1215
1216 vis_deps="sparc"
1217
1218 x86_64_suggest="cmov fast_cmov"
1219 amd3dnow_deps="mmx"
1220 amd3dnowext_deps="amd3dnow"
1221 mmx_deps="x86"
1222 mmx2_deps="mmx"
1223 sse_deps="mmx"
1224 ssse3_deps="sse"
1225 avx_deps="ssse3"
1226
1227 aligned_stack_if_any="ppc x86"
1228 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1229 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1230 fast_unaligned_if_any="armv6 ppc x86"
1231
1232 need_memalign="altivec neon sse"
1233 inline_asm_deps="!tms470"
1234
1235 symver_if_any="symver_asm_label symver_gnu_asm"
1236
1237 # subsystems
1238 dct_select="rdft"
1239 mdct_select="fft"
1240 rdft_select="fft"
1241 mpegaudiodsp_select="dct"
1242
1243 # decoders / encoders / hardware accelerators
1244 aac_decoder_select="mdct sinewin"
1245 aac_encoder_select="mdct sinewin"
1246 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1247 ac3_decoder_select="mdct ac3dsp ac3_parser"
1248 ac3_encoder_select="mdct ac3dsp"
1249 ac3_fixed_encoder_select="mdct ac3dsp"
1250 alac_encoder_select="lpc"
1251 amrnb_decoder_select="lsp"
1252 amrwb_decoder_select="lsp"
1253 atrac1_decoder_select="mdct sinewin"
1254 atrac3_decoder_select="mdct"
1255 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1256 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1257 cavs_decoder_select="golomb"
1258 cook_decoder_select="mdct sinewin"
1259 cscd_decoder_suggest="zlib"
1260 dca_decoder_select="mdct"
1261 dnxhd_encoder_select="aandct"
1262 dxa_decoder_select="zlib"
1263 eac3_decoder_select="ac3_decoder"
1264 eamad_decoder_select="aandct"
1265 eatgq_decoder_select="aandct"
1266 eatqi_decoder_select="aandct"
1267 ffv1_decoder_select="golomb"
1268 flac_decoder_select="golomb"
1269 flac_encoder_select="golomb lpc"
1270 flashsv_decoder_select="zlib"
1271 flashsv_encoder_select="zlib"
1272 flv_decoder_select="h263_decoder"
1273 flv_encoder_select="h263_encoder"
1274 fraps_decoder_select="huffman"
1275 h261_encoder_select="aandct"
1276 h263_decoder_select="h263_parser"
1277 h263_encoder_select="aandct"
1278 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1279 h263i_decoder_select="h263_decoder"
1280 h263p_encoder_select="h263_encoder"
1281 h264_decoder_select="golomb h264dsp h264pred"
1282 h264_dxva2_hwaccel_deps="dxva2api_h"
1283 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1284 h264_vaapi_hwaccel_select="vaapi"
1285 h264_vdpau_decoder_select="vdpau h264_decoder"
1286 imc_decoder_select="fft mdct sinewin"
1287 jpegls_decoder_select="golomb"
1288 jpegls_encoder_select="golomb"
1289 ljpeg_encoder_select="aandct"
1290 loco_decoder_select="golomb"
1291 mjpeg_encoder_select="aandct"
1292 mlp_decoder_select="mlp_parser"
1293 mp1_decoder_select="mpegaudiodsp"
1294 mp2_decoder_select="mpegaudiodsp"
1295 mp3adu_decoder_select="mpegaudiodsp"
1296 mp3_decoder_select="mpegaudiodsp"
1297 mp3on4_decoder_select="mpegaudiodsp"
1298 mp1float_decoder_select="mpegaudiodsp"
1299 mp2float_decoder_select="mpegaudiodsp"
1300 mp3adufloat_decoder_select="mpegaudiodsp"
1301 mp3float_decoder_select="mpegaudiodsp"
1302 mp3on4float_decoder_select="mpegaudiodsp"
1303 mpeg1video_encoder_select="aandct"
1304 mpeg2video_encoder_select="aandct"
1305 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1306 mpeg4_encoder_select="h263_encoder"
1307 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1308 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1309 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1310 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1311 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1312 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1313 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1314 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1315 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1316 msmpeg4v1_decoder_select="h263_decoder"
1317 msmpeg4v1_encoder_select="h263_encoder"
1318 msmpeg4v2_decoder_select="h263_decoder"
1319 msmpeg4v2_encoder_select="h263_encoder"
1320 msmpeg4v3_decoder_select="h263_decoder"
1321 msmpeg4v3_encoder_select="h263_encoder"
1322 nellymoser_decoder_select="mdct sinewin"
1323 nellymoser_encoder_select="mdct sinewin"
1324 png_decoder_select="zlib"
1325 png_encoder_select="zlib"
1326 qcelp_decoder_select="lsp"
1327 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1328 ra_144_encoder_select="lpc"
1329 rv10_decoder_select="h263_decoder"
1330 rv10_encoder_select="h263_encoder"
1331 rv20_decoder_select="h263_decoder"
1332 rv20_encoder_select="h263_encoder"
1333 rv30_decoder_select="golomb h264pred"
1334 rv40_decoder_select="golomb h264pred"
1335 shorten_decoder_select="golomb"
1336 sipr_decoder_select="lsp"
1337 snow_decoder_select="dwt"
1338 snow_encoder_select="aandct dwt"
1339 svq1_encoder_select="aandct"
1340 svq3_decoder_select="golomb h264dsp h264pred"
1341 svq3_decoder_suggest="zlib"
1342 theora_decoder_select="vp3_decoder"
1343 tiff_decoder_suggest="zlib"
1344 tiff_encoder_suggest="zlib"
1345 truehd_decoder_select="mlp_decoder"
1346 tscc_decoder_select="zlib"
1347 twinvq_decoder_select="mdct lsp sinewin"
1348 vc1_decoder_select="h263_decoder"
1349 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1350 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1351 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1352 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1353 vorbis_decoder_select="mdct"
1354 vorbis_encoder_select="mdct"
1355 vp6_decoder_select="huffman"
1356 vp6a_decoder_select="vp6_decoder"
1357 vp6f_decoder_select="vp6_decoder"
1358 vp8_decoder_select="h264pred"
1359 wmapro_decoder_select="mdct sinewin"
1360 wmav1_decoder_select="mdct sinewin"
1361 wmav1_encoder_select="mdct sinewin"
1362 wmav2_decoder_select="mdct sinewin"
1363 wmav2_encoder_select="mdct sinewin"
1364 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1365 wmv1_decoder_select="h263_decoder"
1366 wmv1_encoder_select="h263_encoder"
1367 wmv2_decoder_select="h263_decoder"
1368 wmv2_encoder_select="h263_encoder"
1369 wmv3_decoder_select="vc1_decoder"
1370 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1371 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1372 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1373 zlib_decoder_select="zlib"
1374 zlib_encoder_select="zlib"
1375 zmbv_decoder_select="zlib"
1376 zmbv_encoder_select="zlib"
1377
1378 vaapi_deps="va_va_h"
1379 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1380
1381 # parsers
1382 h264_parser_select="golomb h264dsp h264pred"
1383
1384 # external libraries
1385 libdirac_decoder_deps="libdirac !libschroedinger"
1386 libdirac_encoder_deps="libdirac"
1387 libfaac_encoder_deps="libfaac"
1388 libgsm_decoder_deps="libgsm"
1389 libgsm_encoder_deps="libgsm"
1390 libgsm_ms_decoder_deps="libgsm"
1391 libgsm_ms_encoder_deps="libgsm"
1392 libmp3lame_encoder_deps="libmp3lame"
1393 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1394 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1395 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1396 libopenjpeg_decoder_deps="libopenjpeg"
1397 libschroedinger_decoder_deps="libschroedinger"
1398 libschroedinger_encoder_deps="libschroedinger"
1399 libspeex_decoder_deps="libspeex"
1400 libtheora_encoder_deps="libtheora"
1401 libvo_aacenc_encoder_deps="libvo_aacenc"
1402 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1403 libvorbis_encoder_deps="libvorbis"
1404 libvpx_decoder_deps="libvpx"
1405 libvpx_encoder_deps="libvpx"
1406 libx264_encoder_deps="libx264"
1407 libxavs_encoder_deps="libxavs"
1408 libxvid_encoder_deps="libxvid"
1409
1410 # demuxers / muxers
1411 ac3_demuxer_select="ac3_parser"
1412 asf_stream_muxer_select="asf_muxer"
1413 avisynth_demuxer_deps="avisynth"
1414 dirac_demuxer_select="dirac_parser"
1415 eac3_demuxer_select="ac3_parser"
1416 flac_demuxer_select="flac_parser"
1417 ipod_muxer_select="mov_muxer"
1418 libnut_demuxer_deps="libnut"
1419 libnut_muxer_deps="libnut"
1420 matroska_audio_muxer_select="matroska_muxer"
1421 matroska_demuxer_suggest="zlib bzlib"
1422 mov_demuxer_suggest="zlib"
1423 mp3_demuxer_select="mpegaudio_parser"
1424 mp4_muxer_select="mov_muxer"
1425 mpegtsraw_demuxer_select="mpegts_demuxer"
1426 mxf_d10_muxer_select="mxf_muxer"
1427 ogg_demuxer_select="golomb"
1428 psp_muxer_select="mov_muxer"
1429 rtp_demuxer_select="sdp_demuxer"
1430 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1431 rtsp_demuxer_select="http_protocol rtpdec"
1432 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1433 sap_demuxer_select="sdp_demuxer"
1434 sap_muxer_select="rtp_muxer rtp_protocol"
1435 sdp_demuxer_select="rtpdec"
1436 spdif_muxer_select="aac_parser"
1437 tg2_muxer_select="mov_muxer"
1438 tgp_muxer_select="mov_muxer"
1439 w64_demuxer_deps="wav_demuxer"
1440
1441 # indevs / outdevs
1442 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1443 alsa_outdev_deps="alsa_asoundlib_h"
1444 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1445 dv1394_indev_deps="dv1394 dv_demuxer"
1446 fbdev_indev_deps="linux_fb_h"
1447 jack_indev_deps="jack_jack_h"
1448 libdc1394_indev_deps="libdc1394"
1449 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1450 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1451 sndio_indev_deps="sndio_h"
1452 sndio_outdev_deps="sndio_h"
1453 v4l_indev_deps="linux_videodev_h"
1454 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1455 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1456 vfwcap_indev_extralibs="-lavicap32"
1457 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1458 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1459
1460 # protocols
1461 gopher_protocol_deps="network"
1462 http_protocol_deps="network"
1463 http_protocol_select="tcp_protocol"
1464 mmsh_protocol_select="http_protocol"
1465 mmst_protocol_deps="network"
1466 rtmp_protocol_select="tcp_protocol"
1467 rtp_protocol_select="udp_protocol"
1468 tcp_protocol_deps="network"
1469 udp_protocol_deps="network"
1470
1471 # filters
1472 blackframe_filter_deps="gpl"
1473 cropdetect_filter_deps="gpl"
1474 drawtext_filter_deps="libfreetype"
1475 frei0r_filter_deps="frei0r dlopen strtok_r"
1476 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1477 hqdn3d_filter_deps="gpl"
1478 ocv_filter_deps="libopencv"
1479 scale_filter_deps="swscale"
1480 yadif_filter_deps="gpl"
1481
1482 # libraries
1483 avdevice_deps="avcodec avformat"
1484 avformat_deps="avcodec"
1485 postproc_deps="gpl"
1486
1487 # programs
1488 ffmpeg_deps="avcodec avformat swscale"
1489 ffmpeg_select="buffer_filter"
1490 ffplay_deps="avcodec avformat swscale sdl"
1491 ffplay_select="rdft"
1492 ffprobe_deps="avcodec avformat"
1493 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1494 ffserver_extralibs='$ldl'
1495
1496 doc_deps="texi2html"
1497
1498 # tests
1499
1500 test_deps(){
1501     suf1=$1
1502     suf2=$2
1503     shift 2
1504     for v; do
1505         dep=${v%=*}
1506         tests=${v#*=}
1507         for name in ${tests}; do
1508             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1509         done
1510     done
1511 }
1512
1513 set_ne_test_deps(){
1514     eval ${1}_be_test_deps="bigendian"
1515     eval ${1}_le_test_deps="!bigendian"
1516 }
1517
1518 test_deps _encoder _decoder                                             \
1519     adpcm_g726=g726                                                     \
1520     adpcm_ima_qt                                                        \
1521     adpcm_ima_wav                                                       \
1522     adpcm_ms                                                            \
1523     adpcm_swf                                                           \
1524     adpcm_yamaha=adpcm_yam                                              \
1525     alac                                                                \
1526     asv1                                                                \
1527     asv2                                                                \
1528     bmp                                                                 \
1529     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1530     dvvideo="dv dv50"                                                   \
1531     ffv1                                                                \
1532     flac                                                                \
1533     flashsv                                                             \
1534     flv                                                                 \
1535     gif                                                                 \
1536     h261                                                                \
1537     h263="h263 h263p"                                                   \
1538     huffyuv                                                             \
1539     jpegls                                                              \
1540     mjpeg="jpg mjpeg ljpeg"                                             \
1541     mp2                                                                 \
1542     mpeg1video="mpeg mpeg1b"                                            \
1543     mpeg2video="mpeg2 mpeg2thread"                                      \
1544     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1545     msmpeg4v3=msmpeg4                                                   \
1546     msmpeg4v2                                                           \
1547     pbm=pbmpipe                                                         \
1548     pcx                                                                 \
1549     pgm="pgm pgmpipe"                                                   \
1550     png                                                                 \
1551     ppm="ppm ppmpipe"                                                   \
1552     rawvideo="rgb yuv"                                                  \
1553     roq                                                                 \
1554     rv10                                                                \
1555     rv20                                                                \
1556     sgi                                                                 \
1557     snow="snow snowll"                                                  \
1558     svq1                                                                \
1559     targa=tga                                                           \
1560     tiff                                                                \
1561     wmav1                                                               \
1562     wmav2                                                               \
1563     wmv1                                                                \
1564     wmv2                                                                \
1565
1566 test_deps _muxer _demuxer                                               \
1567     aiff                                                                \
1568     pcm_alaw=alaw                                                       \
1569     asf                                                                 \
1570     au                                                                  \
1571     avi                                                                 \
1572     dv=dv_fmt                                                           \
1573     ffm                                                                 \
1574     flv=flv_fmt                                                         \
1575     gxf                                                                 \
1576     matroska=mkv                                                        \
1577     mmf                                                                 \
1578     mov                                                                 \
1579     pcm_mulaw=mulaw                                                     \
1580     mxf                                                                 \
1581     nut                                                                 \
1582     ogg                                                                 \
1583     rawvideo=pixfmt                                                     \
1584     rm                                                                  \
1585     swf                                                                 \
1586     mpegts=ts                                                           \
1587     voc                                                                 \
1588     wav                                                                 \
1589     yuv4mpegpipe=yuv4mpeg                                               \
1590
1591 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1592 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1593
1594 set_ne_test_deps pixdesc
1595 set_ne_test_deps pixfmts_copy
1596 set_ne_test_deps pixfmts_crop
1597 set_ne_test_deps pixfmts_hflip
1598 set_ne_test_deps pixfmts_null
1599 set_ne_test_deps pixfmts_pad
1600 set_ne_test_deps pixfmts_scale
1601 set_ne_test_deps pixfmts_vflip
1602
1603 # default parameters
1604
1605 logfile="config.log"
1606
1607 # installation paths
1608 prefix_default="/usr/local"
1609 bindir_default='${prefix}/bin'
1610 datadir_default='${prefix}/share/ffmpeg'
1611 incdir_default='${prefix}/include'
1612 libdir_default='${prefix}/lib'
1613 mandir_default='${prefix}/share/man'
1614 shlibdir_default="$libdir_default"
1615
1616 # toolchain
1617 ar_default="ar"
1618 cc_default="gcc"
1619 cc_version=\"unknown\"
1620 host_cc_default="gcc"
1621 ln_s="ln -sf"
1622 nm_default="nm"
1623 objformat="elf"
1624 pkg_config_default=pkg-config
1625 ranlib="ranlib"
1626 yasmexe="yasm"
1627 nogas=":"
1628
1629 nm_opts='-g'
1630
1631 # machine
1632 arch_default=$(uname -m)
1633 cpu="generic"
1634
1635 # OS
1636 target_os_default=$(tolower $(uname -s))
1637 host_os=$target_os_default
1638
1639 # configurable options
1640 enable avcodec
1641 enable avdevice
1642 enable avfilter
1643 enable avformat
1644 enable avutil
1645 enable asm
1646 enable debug
1647 enable doc
1648 enable fastdiv
1649 enable ffmpeg
1650 enable ffplay
1651 enable ffprobe
1652 enable ffserver
1653 enable network
1654 enable optimizations
1655 enable postproc
1656 enable protocols
1657 enable static
1658 enable swscale
1659 enable swscale_alpha
1660
1661 # build settings
1662 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1663 FFSERVERLDFLAGS=-Wl,-E
1664 LIBPREF="lib"
1665 LIBSUF=".a"
1666 FULLNAME='$(NAME)$(BUILDSUF)'
1667 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1668 SLIBPREF="lib"
1669 SLIBSUF=".so"
1670 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1671 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1672 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1673 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1674
1675 CC_O='-o $@'
1676
1677 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1678 host_libs='-lm'
1679
1680 target_path='$(CURDIR)'
1681
1682 # since the object filename is not given with the -MM flag, the compiler
1683 # is only able to print the basename, and we must add the path ourselves
1684 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1685 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1686
1687 # find source path
1688 source_path="$(dirname "$0")"
1689 enable source_path_used
1690 if test -f configure; then
1691     source_path="$(pwd)"
1692     disable source_path_used
1693 else
1694     source_path="$(cd "$source_path"; pwd)"
1695     echo "$source_path" | grep -q '[[:blank:]]' &&
1696         die "Out of tree builds are impossible with whitespace in source path."
1697     test -e "$source_path/config.h" &&
1698         die "Out of tree builds are impossible with config.h in source dir."
1699 fi
1700
1701 for v in "$@"; do
1702     r=${v#*=}
1703     l=${v%"$r"}
1704     r=$(sh_quote "$r")
1705     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1706 done
1707
1708 find_things(){
1709     thing=$1
1710     pattern=$2
1711     file=$source_path/$3
1712     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1713 }
1714
1715 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1716 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1717 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1718 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1719 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1720 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1721 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1722 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1723 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1724 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1725 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1726
1727 find_tests(){
1728     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1729 }
1730
1731 ACODEC_TESTS=$(find_tests acodec)
1732 VCODEC_TESTS=$(find_tests vsynth1)
1733 LAVF_TESTS=$(find_tests lavf)
1734 LAVFI_TESTS=$(find_tests lavfi)
1735 SEEK_TESTS=$(find_tests seek seek_)
1736
1737 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1738
1739 for n in $COMPONENT_LIST; do
1740     v=$(toupper ${n%s})_LIST
1741     eval enable \$$v
1742     eval ${n}_if_any="\$$v"
1743 done
1744
1745 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1746
1747 die_unknown(){
1748     echo "Unknown option \"$1\"."
1749     echo "See $0 --help for available options."
1750     exit 1
1751 }
1752
1753 show_list() {
1754     suffix=_$1
1755     shift
1756     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1757     exit 0
1758 }
1759
1760 for opt do
1761     optval="${opt#*=}"
1762     case "$opt" in
1763     --extra-ldflags=*) add_ldflags $optval
1764     ;;
1765     --extra-libs=*) add_extralibs $optval
1766     ;;
1767     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1768     ;;
1769     --enable-debug=*) debuglevel="$optval"
1770     ;;
1771     --disable-everything)
1772     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1773     ;;
1774     --enable-*=*|--disable-*=*)
1775     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1776     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1777     eval list=\$$(toupper $thing)_LIST
1778     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1779     $action $(filter "$name" $list)
1780     ;;
1781     --enable-?*|--disable-?*)
1782     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1783     if is_in $option $COMPONENT_LIST; then
1784         test $action = disable && action=unset
1785         eval $action \$$(toupper ${option%s})_LIST
1786     elif is_in $option $CMDLINE_SELECT; then
1787         $action $option
1788     else
1789         die_unknown $opt
1790     fi
1791     ;;
1792     --list-*)
1793         NAME="${opt#--list-}"
1794         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1795         NAME=${NAME%s}
1796         eval show_list $NAME \$$(toupper $NAME)_LIST
1797     ;;
1798     --help|-h) show_help
1799     ;;
1800     *)
1801     optname="${opt%%=*}"
1802     optname="${optname#--}"
1803     optname=$(echo "$optname" | sed 's/-/_/g')
1804     if is_in $optname $CMDLINE_SET; then
1805         eval $optname='$optval'
1806     elif is_in $optname $CMDLINE_APPEND; then
1807         append $optname "$optval"
1808     else
1809          die_unknown $opt
1810     fi
1811     ;;
1812     esac
1813 done
1814
1815 disabled logging && logfile=/dev/null
1816
1817 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
1818 set >> $logfile
1819
1820 test -n "$cross_prefix" && enable cross_compile
1821
1822 if enabled cross_compile; then
1823     test -n "$arch" && test -n "$target_os" ||
1824         die "Must specify target arch and OS when cross-compiling"
1825 fi
1826
1827 set_default arch target_os
1828
1829 ar_default="${cross_prefix}${ar_default}"
1830 cc_default="${cross_prefix}${cc_default}"
1831 nm_default="${cross_prefix}${nm_default}"
1832 pkg_config_default="${cross_prefix}${pkg_config_default}"
1833 ranlib="${cross_prefix}${ranlib}"
1834
1835 sysinclude_default="${sysroot}/usr/include"
1836
1837 set_default cc nm pkg_config sysinclude
1838 enabled cross_compile || host_cc_default=$cc
1839 set_default host_cc
1840
1841 if ! $pkg_config --version >/dev/null 2>&1; then
1842     warn "$pkg_config not found, library detection may fail."
1843     pkg_config=false
1844 fi
1845
1846 exesuf() {
1847     case $1 in
1848         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1849     esac
1850 }
1851
1852 EXESUF=$(exesuf $target_os)
1853 HOSTEXESUF=$(exesuf $host_os)
1854
1855 # set temporary file name
1856 : ${TMPDIR:=$TEMPDIR}
1857 : ${TMPDIR:=$TMP}
1858 : ${TMPDIR:=/tmp}
1859
1860 if ! check_cmd mktemp -u XXXXXX; then
1861     # simple replacement for missing mktemp
1862     # NOT SAFE FOR GENERAL USE
1863     mktemp(){
1864         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1865     }
1866 fi
1867
1868 tmpfile(){
1869     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1870         (set -C; exec > $tmp) 2>/dev/null ||
1871         die "Unable to create temporary file in $TMPDIR."
1872     append TMPFILES $tmp
1873     eval $1=$tmp
1874 }
1875
1876 trap 'rm -f -- $TMPFILES' EXIT
1877
1878 tmpfile TMPC  .c
1879 tmpfile TMPE  $EXESUF
1880 tmpfile TMPH  .h
1881 tmpfile TMPO  .o
1882 tmpfile TMPS  .S
1883 tmpfile TMPV  .ver
1884 tmpfile TMPSH .sh
1885 tmpfile TMPASM .asm
1886
1887 unset -f mktemp
1888
1889 chmod +x $TMPE
1890
1891 # make sure we can execute files in $TMPDIR
1892 cat > $TMPSH 2>> $logfile <<EOF
1893 #! /bin/sh
1894 EOF
1895 chmod +x $TMPSH >> $logfile 2>&1
1896 if ! $TMPSH >> $logfile 2>&1; then
1897     cat <<EOF
1898 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1899 variable to another directory and make sure that it is not mounted noexec.
1900 EOF
1901     die "Sanity test failed."
1902 fi
1903
1904 filter_cflags=echo
1905 filter_cppflags=echo
1906 filter_asflags=echo
1907
1908 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1909     cc_type=llvm_gcc
1910     cc_version=__VERSION__
1911     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1912     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1913     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1914     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1915     speed_cflags='-O3'
1916     size_cflags='-Os'
1917 elif $cc -v 2>&1 | grep -qi ^gcc; then
1918     cc_type=gcc
1919     cc_version=__VERSION__
1920     gcc_version=$($cc --version | head -n1)
1921     gcc_basever=$($cc -dumpversion)
1922     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1923     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1924     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1925     if ! $cc -dumpversion | grep -q '^2\.'; then
1926         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1927         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1928     fi
1929     speed_cflags='-O3'
1930     size_cflags='-Os'
1931 elif $cc --version 2>/dev/null | grep -q Intel; then
1932     cc_type=icc
1933     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1934     cc_ident=$($cc --version | head -n1)
1935     icc_version=$($cc -dumpversion)
1936     CC_DEPFLAGS='-MMD'
1937     AS_DEPFLAGS='-MMD'
1938     speed_cflags='-O3'
1939     size_cflags='-Os'
1940     noopt_cflags='-O1'
1941 elif $cc -v 2>&1 | grep -q xlc; then
1942     cc_type=xlc
1943     cc_version="AV_STRINGIFY(__IBMC__)"
1944     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1945     speed_cflags='-O5'
1946     size_cflags='-O5 -qcompact'
1947 elif $cc -V 2>/dev/null | grep -q Compaq; then
1948     cc_type=ccc
1949     cc_version="AV_STRINGIFY(__DECC_VER)"
1950     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1951     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1952     debuglevel=3
1953     add_ldflags -Wl,-z,now # calls to libots crash without this
1954     speed_cflags='-fast'
1955     size_cflags='-O1'
1956 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1957     test -d "$sysroot" || die "No valid sysroot specified."
1958     cc_type=armcc
1959     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1960     cc_ident=$($cc --vsn | head -n1)
1961     armcc_conf="$PWD/armcc.conf"
1962     $cc --arm_linux_configure                 \
1963         --arm_linux_config_file="$armcc_conf" \
1964         --configure_sysroot="$sysroot"        \
1965         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1966         die "Error creating armcc configuration file."
1967     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1968     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1969     as_default="${cross_prefix}gcc"
1970     CC_DEPFLAGS='-MMD'
1971     AS_DEPFLAGS='-MMD'
1972     speed_cflags='-O3'
1973     size_cflags='-Os'
1974     filter_asflags="filter_out -W${armcc_opt}*"
1975 elif $cc -version 2>/dev/null | grep -q TMS470; then
1976     cc_type=tms470
1977     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1978     cc_ident=$($cc -version | head -n1 | tr -s ' ')
1979     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1980     CC_O='-fr=$(@D)'
1981     as_default="${cross_prefix}gcc"
1982     ld_default="${cross_prefix}gcc"
1983     TMPO=$(basename $TMPC .c).o
1984     append TMPFILES $TMPO
1985     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
1986     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
1987     AS_DEPFLAGS='-MMD'
1988     speed_cflags='-O3 -mf=5'
1989     size_cflags='-O3 -mf=2'
1990     filter_cflags=tms470_flags
1991     tms470_flags(){
1992         for flag; do
1993             case $flag in
1994                 -march=*|-mcpu=*)
1995                     case "${flag#*=}" in
1996                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
1997                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
1998                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
1999                         armv6*|arm11*)          echo -mv=6   ;;
2000                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2001                                                 echo -mv=5e  ;;
2002                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2003                     esac
2004                     ;;
2005                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2006                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2007                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2008                 -msoft-float)   echo --float_support=vfplib       ;;
2009                 -O[0-3]|-mf=*)  echo $flag                        ;;
2010                 -g)             echo -g -mn                       ;;
2011                 -pds=*)         echo $flag                        ;;
2012             esac
2013         done
2014     }
2015 elif $cc -v 2>&1 | grep -q clang; then
2016     cc_type=clang
2017     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2018         cc_version=__clang_version__ || cc_version=__VERSION__
2019     cc_ident=$($cc --version | head -n1)
2020     CC_DEPFLAGS='-MMD'
2021     AS_DEPFLAGS='-MMD'
2022     speed_cflags='-O3'
2023     size_cflags='-Os'
2024 elif $cc -V 2>&1 | grep -q Sun; then
2025     cc_type=suncc
2026     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2027     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2028     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2029     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2030     speed_cflags='-O5'
2031     size_cflags='-O5 -xspace'
2032     filter_cflags=suncc_flags
2033     suncc_flags(){
2034         for flag; do
2035             case $flag in
2036                 -march=*|-mcpu=*)
2037                     case "${flag#*=}" in
2038                         native)                   echo -xtarget=native       ;;
2039                         v9|niagara)               echo -xarch=sparc          ;;
2040                         ultrasparc)               echo -xarch=sparcvis       ;;
2041                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2042                         i586|pentium)             echo -xchip=pentium        ;;
2043                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2044                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2045                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2046                         pentium4*)          echo -xtarget=pentium4           ;;
2047                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2048                         *-sse3)             echo -xarch=sse3                 ;;
2049                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2050                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2051                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2052                         k8|opteron|athlon64|athlon-fx)
2053                                                   echo -xarch=sse2a          ;;
2054                         athlon*)                  echo -xarch=pentium_proa   ;;
2055                     esac
2056                     ;;
2057                 -std=c99)             echo -xc99              ;;
2058                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2059                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2060                 -W*,*)                echo $flag              ;;
2061                 -f*-*|-W*)                                    ;;
2062                 *)                    echo $flag              ;;
2063             esac
2064         done
2065     }
2066 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2067     cc_type=pathscale
2068     cc_version=__PATHSCALE__
2069     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2070     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2071     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2072     speed_cflags='-O2'
2073     size_cflags='-Os'
2074 elif $cc -v 2>&1 | grep -q Open64; then
2075     cc_type=open64
2076     cc_version=__OPEN64__
2077     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2078     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2079     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2080     speed_cflags='-O2'
2081     size_cflags='-Os'
2082 fi
2083
2084 test -n "$cc_type" && enable $cc_type ||
2085     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2086
2087 : ${as_default:=$cc}
2088 : ${dep_cc_default:=$cc}
2089 : ${ld_default:=$cc}
2090 set_default ar as dep_cc ld
2091
2092 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2093 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2094
2095 add_cflags $extra_cflags
2096 add_asflags $extra_cflags
2097
2098 if test -n "$sysroot"; then
2099     case "$cc_type" in
2100         gcc|llvm_gcc|clang)
2101             add_cppflags --sysroot="$sysroot"
2102             add_ldflags --sysroot="$sysroot"
2103         ;;
2104         tms470)
2105             add_cppflags -I"$sysinclude"
2106             add_ldflags  --sysroot="$sysroot"
2107         ;;
2108     esac
2109 fi
2110
2111 if test "$cpu" = host; then
2112     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2113
2114     case "$cc_type" in
2115         gcc|llvm_gcc)
2116             check_native(){
2117                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2118                 sed -n "/$1=/{
2119                             s/.*$1=\\([^ ]*\\).*/\\1/
2120                             p
2121                             q
2122                         }" $TMPE
2123             }
2124             cpu=$(check_native -march || check_native -mcpu)
2125         ;;
2126     esac
2127
2128     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2129 fi
2130
2131 # Deal with common $arch aliases
2132 case "$arch" in
2133     arm*)
2134         arch="arm"
2135     ;;
2136     mips|mipsel|IP*)
2137         arch="mips"
2138     ;;
2139     mips64*)
2140         arch="mips"
2141         subarch="mips64"
2142     ;;
2143     parisc|hppa)
2144         arch="parisc"
2145     ;;
2146     parisc64|hppa64)
2147         arch="parisc"
2148         subarch="parisc64"
2149     ;;
2150     "Power Macintosh"|ppc|powerpc)
2151         arch="ppc"
2152     ;;
2153     ppc64|powerpc64)
2154         arch="ppc"
2155         subarch="ppc64"
2156     ;;
2157     s390|s390x)
2158         arch="s390"
2159     ;;
2160     sh4|sh)
2161         arch="sh4"
2162     ;;
2163     sun4u|sparc64)
2164         arch="sparc"
2165         subarch="sparc64"
2166     ;;
2167     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2168         arch="x86"
2169     ;;
2170 esac
2171
2172 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2173 enable $arch
2174
2175 # Add processor-specific flags
2176 if test "$cpu" = generic; then
2177     : do nothing
2178 elif enabled ppc; then
2179
2180     case $(tolower $cpu) in
2181         601|ppc601|powerpc601)
2182             cpuflags="-mcpu=601"
2183             disable altivec
2184         ;;
2185         603*|ppc603*|powerpc603*)
2186             cpuflags="-mcpu=603"
2187             disable altivec
2188         ;;
2189         604*|ppc604*|powerpc604*)
2190             cpuflags="-mcpu=604"
2191             disable altivec
2192         ;;
2193         g3|75*|ppc75*|powerpc75*)
2194             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2195             disable altivec
2196         ;;
2197         g4|745*|ppc745*|powerpc745*)
2198             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2199         ;;
2200         74*|ppc74*|powerpc74*)
2201             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2202         ;;
2203         g5|970|ppc970|powerpc970|power4*)
2204             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2205         ;;
2206         cell)
2207             cpuflags="-mcpu=cell"
2208             enable ldbrx
2209         ;;
2210         e500v2)
2211             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2212             disable altivec
2213         ;;
2214         e500)
2215             cpuflags="-mcpu=8540 -mhard-float"
2216             disable altivec
2217         ;;
2218     esac
2219
2220 elif enabled x86; then
2221
2222     case $cpu in
2223         i[345]86|pentium)
2224             cpuflags="-march=$cpu"
2225             disable mmx
2226         ;;
2227         # targets that do NOT support conditional mov (cmov)
2228         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2229             cpuflags="-march=$cpu"
2230             disable cmov
2231         ;;
2232         # targets that do support conditional mov (cmov)
2233         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2234             cpuflags="-march=$cpu"
2235             enable cmov
2236             enable fast_cmov
2237         ;;
2238         # targets that do support conditional mov but on which it's slow
2239         pentium4|pentium4m|prescott|nocona)
2240             cpuflags="-march=$cpu"
2241             enable cmov
2242             disable fast_cmov
2243         ;;
2244     esac
2245
2246 elif enabled sparc; then
2247
2248     case $cpu in
2249         niagara)
2250             cpuflags="-mcpu=$cpu"
2251             disable vis
2252         ;;
2253         sparc64)
2254             cpuflags="-mcpu=v9"
2255         ;;
2256     esac
2257
2258 elif enabled arm; then
2259
2260     case $cpu in
2261         armv*)
2262             cpuflags="-march=$cpu"
2263             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2264         ;;
2265         *)
2266             cpuflags="-mcpu=$cpu"
2267             case $cpu in
2268                 cortex-a*)                               subarch=armv7a  ;;
2269                 cortex-r*)                               subarch=armv7r  ;;
2270                 cortex-m*)                               subarch=armv7m  ;;
2271                 arm11*)                                  subarch=armv6   ;;
2272                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2273                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2274             esac
2275         ;;
2276     esac
2277
2278 elif enabled alpha; then
2279
2280     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2281
2282 elif enabled bfin; then
2283
2284     cpuflags="-mcpu=$cpu"
2285
2286 elif enabled mips; then
2287
2288     cpuflags="-march=$cpu"
2289
2290 elif enabled avr32; then
2291
2292     case $cpu in
2293         ap7[02]0[0-2])
2294             subarch="avr32_ap"
2295             cpuflags="-mpart=$cpu"
2296         ;;
2297         ap)
2298             subarch="avr32_ap"
2299             cpuflags="-march=$cpu"
2300         ;;
2301         uc3[ab]*)
2302             subarch="avr32_uc"
2303             cpuflags="-mcpu=$cpu"
2304         ;;
2305         uc)
2306             subarch="avr32_uc"
2307             cpuflags="-march=$cpu"
2308         ;;
2309     esac
2310
2311 fi
2312
2313 add_cflags $cpuflags
2314 add_asflags $cpuflags
2315
2316 # compiler sanity check
2317 check_exec <<EOF
2318 int main(void){ return 0; }
2319 EOF
2320 if test "$?" != 0; then
2321     echo "$cc is unable to create an executable file."
2322     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2323         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2324         echo "Only do this if you know what cross compiling means."
2325     fi
2326     die "C compiler test failed."
2327 fi
2328
2329 add_cppflags -D_ISOC99_SOURCE
2330 check_cflags -std=c99
2331 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2332 #include <stdlib.h>
2333 EOF
2334 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2335 #include <stdlib.h>
2336 EOF
2337
2338 check_host_cflags -std=c99
2339 check_host_cflags -Wall
2340
2341 case "$arch" in
2342     alpha|ia64|mips|parisc|sparc)
2343         spic=$shared
2344     ;;
2345     x86)
2346         subarch="x86_32"
2347         check_cc <<EOF && subarch="x86_64"
2348         int test[(int)sizeof(char*) - 7];
2349 EOF
2350         if test "$subarch" = "x86_64"; then
2351             spic=$shared
2352         fi
2353     ;;
2354 esac
2355
2356 enable $subarch
2357 enabled spic && enable pic
2358
2359 # OS specific
2360 case $target_os in
2361     haiku)
2362         prefix_default="/boot/common"
2363         network_extralibs="-lnetwork"
2364         host_libs=
2365         ;;
2366     sunos)
2367         FFSERVERLDFLAGS=""
2368         SHFLAGS='-shared -Wl,-h,$$(@F)'
2369         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2370         network_extralibs="-lsocket -lnsl"
2371         add_cppflags -D__EXTENSIONS__
2372         nm_opts='-P -g'
2373         ;;
2374     netbsd)
2375         disable symver
2376         oss_indev_extralibs="-lossaudio"
2377         oss_outdev_extralibs="-lossaudio"
2378         ;;
2379     openbsd)
2380         enable malloc_aligned
2381         # On OpenBSD 4.5. the compiler does not use PIC unless
2382         # explicitly using -fPIC. Libav builds fine without PIC,
2383         # however the generated executable will not do anything
2384         # (simply quits with exit-code 1, no crash, no output).
2385         # Thus explicitly enable PIC here.
2386         enable pic
2387         disable symver
2388         SHFLAGS='-shared'
2389         oss_indev_extralibs="-lossaudio"
2390         oss_outdev_extralibs="-lossaudio"
2391         ;;
2392     dragonfly)
2393         enable malloc_aligned
2394         disable symver
2395         ;;
2396     freebsd)
2397         enable malloc_aligned
2398         ;;
2399     bsd/os)
2400         add_extralibs -lpoll -lgnugetopt
2401         ;;
2402     darwin)
2403         enable malloc_aligned
2404         gas="gas-preprocessor.pl $cc"
2405         enabled ppc && add_asflags -force_cpusubtype_ALL
2406         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2407         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2408         add_ldflags -Wl,-dynamic,-search_paths_first
2409         SLIBSUF=".dylib"
2410         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2411         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2412         FFSERVERLDFLAGS=-Wl,-bind_at_load
2413         objformat="macho"
2414         enabled x86_64 && objformat="macho64"
2415         enabled_any pic shared ||
2416             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2417         ;;
2418     mingw32*)
2419         if test $target_os = "mingw32ce"; then
2420             disable network
2421         else
2422             target_os=mingw32
2423         fi
2424         LIBTARGET=i386
2425         if enabled x86_64; then
2426             enable malloc_aligned
2427             LIBTARGET="i386:x86-64"
2428         elif enabled arm; then
2429             LIBTARGET=arm-wince
2430         fi
2431         shlibdir_default="$bindir_default"
2432         SLIBPREF=""
2433         SLIBSUF=".dll"
2434         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2435         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2436         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2437         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2438             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2439             install -d "$(LIBDIR)"; \
2440             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2441         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2442         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'
2443         objformat="win32"
2444         dlltool="${cross_prefix}dlltool"
2445         enable dos_paths
2446         check_cflags -fno-common
2447         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2448                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2449                 die "ERROR: MinGW runtime version must be >= 3.15."
2450         add_cppflags -U__STRICT_ANSI__
2451         ;;
2452     cygwin*)
2453         target_os=cygwin
2454         shlibdir_default="$bindir_default"
2455         SLIBPREF="cyg"
2456         SLIBSUF=".dll"
2457         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2458         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2459         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2460         objformat="win32"
2461         enable dos_paths
2462         check_cflags -fno-common
2463         add_cppflags -U__STRICT_ANSI__
2464         ;;
2465     *-dos|freedos|opendos)
2466         network_extralibs="-lsocket"
2467         objformat="coff"
2468         enable dos_paths
2469         add_cppflags -U__STRICT_ANSI__
2470         ;;
2471     linux)
2472         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2473         enable dv1394
2474         ;;
2475     irix*)
2476         target_os=irix
2477         ranlib="echo ignoring ranlib"
2478         ;;
2479     os/2*)
2480         ln_s="cp -f"
2481         objformat="aout"
2482         add_cppflags -D_GNU_SOURCE
2483         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2484         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2485         FFSERVERLDFLAGS=""
2486         LIBSUF="_s.a"
2487         SLIBPREF=""
2488         SLIBSUF=".dll"
2489         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2490         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2491         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2492           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2493           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2494           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2495           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2496           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2497         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2498           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2499         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2500         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2501         enable dos_paths
2502         ;;
2503     gnu/kfreebsd)
2504         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2505         ;;
2506     gnu)
2507         ;;
2508     qnx)
2509         add_cppflags -D_QNX_SOURCE
2510         network_extralibs="-lsocket"
2511         ;;
2512     symbian)
2513         SLIBSUF=".dll"
2514         enable dos_paths
2515         add_cflags --include=$sysinclude/gcce/gcce.h
2516         ;;
2517     none)
2518         ;;
2519     *)
2520         die "Unknown OS '$target_os'."
2521         ;;
2522 esac
2523
2524 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$LIBAV_CONFIGURATION" >config.fate
2525
2526 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2527
2528 set_default $PATHS_LIST
2529
2530 # we need to build at least one lib type
2531 if ! enabled_any static shared; then
2532     cat <<EOF
2533 At least one library type must be built.
2534 Specify --enable-static to build the static libraries or --enable-shared to
2535 build the shared libraries as well. To only build the shared libraries specify
2536 --disable-static in addition to --enable-shared.
2537 EOF
2538     exit 1;
2539 fi
2540
2541 disabled static && LIBNAME=""
2542
2543 die_license_disabled() {
2544     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2545 }
2546
2547 die_license_disabled gpl libx264
2548 die_license_disabled gpl libxavs
2549 die_license_disabled gpl libxvid
2550 die_license_disabled gpl x11grab
2551
2552 die_license_disabled nonfree libfaac
2553
2554 die_license_disabled version3 libopencore_amrnb
2555 die_license_disabled version3 libopencore_amrwb
2556 die_license_disabled version3 libvo_aacenc
2557 die_license_disabled version3 libvo_amrwbenc
2558
2559 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2560
2561 disabled optimizations || check_cflags -fomit-frame-pointer
2562
2563 enable_pic() {
2564     enable pic
2565     add_cppflags -DPIC
2566     add_cflags   -fPIC
2567     add_asflags  -fPIC
2568 }
2569
2570 enabled pic && enable_pic
2571
2572 check_cc <<EOF || die "Symbol mangling check failed."
2573 int ff_extern;
2574 EOF
2575 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2576 extern_prefix=${sym%%ff_extern*}
2577
2578 check_cc <<EOF && enable inline_asm
2579 void foo(void) { __asm__ volatile ("" ::); }
2580 EOF
2581
2582 _restrict=
2583 for restrict_keyword in restrict __restrict__ __restrict; do
2584     check_cc <<EOF && _restrict=$restrict_keyword && break
2585 void foo(char * $restrict_keyword p);
2586 EOF
2587 done
2588
2589 check_cc <<EOF && enable attribute_packed
2590 struct { int x; } __attribute__((packed)) x;
2591 EOF
2592
2593 check_cc <<EOF && enable attribute_may_alias
2594 union { int x; } __attribute__((may_alias)) x;
2595 EOF
2596
2597 check_cc <<EOF || die "endian test failed"
2598 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2599 EOF
2600 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2601
2602 if enabled alpha; then
2603
2604     check_cflags -mieee
2605
2606 elif enabled arm; then
2607
2608     check_cflags -marm
2609     nogas=die
2610
2611     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2612         enable vfp_args
2613     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2614         case "${cross_prefix:-$cc}" in
2615             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2616             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2617 __asm__ (".eabi_attribute 28, 1");
2618 int main(void) { return 0; }
2619 EOF
2620         esac
2621         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2622     fi
2623
2624     # We have to check if pld is a nop and disable it.
2625     check_asm pld '"pld [r0]"'
2626
2627     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2628     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2629     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2630     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2631     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2632     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2633     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2634
2635     enabled_all armv6t2 shared !pic && enable_pic
2636
2637 elif enabled mips; then
2638
2639     check_asm loongson '"dmult.g $1, $2, $3"'
2640     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2641
2642 elif enabled ppc; then
2643
2644     enable local_aligned_8 local_aligned_16
2645
2646     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2647     check_asm ibm_asm   '"add 0, 0, 0"'
2648     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2649     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2650
2651     # AltiVec flags: The FSF version of GCC differs from the Apple version
2652     if enabled altivec; then
2653         nogas=warn
2654         check_cflags -maltivec -mabi=altivec &&
2655         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2656         check_cflags -faltivec
2657
2658         # check if our compiler supports Motorola AltiVec C API
2659         check_cc <<EOF || disable altivec
2660 $inc_altivec_h
2661 int main(void) {
2662     vector signed int v1, v2, v3;
2663     v1 = vec_add(v2,v3);
2664     return 0;
2665 }
2666 EOF
2667
2668         # check if our compiler supports braces for vector declarations
2669         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2670 $inc_altivec_h
2671 int main (void) { (vector int) {1}; return 0; }
2672 EOF
2673     fi
2674
2675 elif enabled sparc; then
2676
2677     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2678         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2679
2680 elif enabled x86; then
2681
2682     enable local_aligned_8 local_aligned_16
2683
2684     # check whether EBP is available on x86
2685     # As 'i' is stored on the stack, this program will crash
2686     # if the base pointer is used to access it because the
2687     # base pointer is cleared in the inline assembly code.
2688     check_exec_crash <<EOF && enable ebp_available
2689     volatile int i=0;
2690     __asm__ volatile (
2691         "xorl %%ebp, %%ebp"
2692     ::: "%ebp");
2693     return i;
2694 EOF
2695
2696     # check whether EBX is available on x86
2697     check_asm ebx_available '""::"b"(0)' &&
2698         check_asm ebx_available '"":::"%ebx"'
2699
2700     # check whether xmm clobbers are supported
2701     check_asm xmm_clobbers '"":::"%xmm0"'
2702
2703     # check whether more than 10 operands are supported
2704     check_cc <<EOF && enable ten_operands
2705 int main(void) {
2706     int x=0;
2707     __asm__ volatile(
2708         ""
2709         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2710     );
2711     return 0;
2712 }
2713 EOF
2714
2715     # check whether binutils is new enough to compile SSSE3/MMX2
2716     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2717     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2718
2719     check_asm bswap '"bswap %%eax" ::: "%eax"'
2720
2721     if ! disabled_any asm mmx yasm; then
2722         if check_cmd $yasmexe --version; then
2723             enabled x86_64 && yasm_extra="-m amd64"
2724             yasm_debug="-g dwarf2"
2725         elif check_cmd nasm -v; then
2726             yasmexe=nasm
2727             yasm_debug="-g -F dwarf"
2728             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2729         fi
2730
2731         YASMFLAGS="-f $objformat $yasm_extra"
2732         enabled pic               && append YASMFLAGS "-DPIC"
2733         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2734         case "$objformat" in
2735             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2736         esac
2737
2738         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2739             die "yasm not found, use --disable-yasm for a crippled build"
2740         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2741     fi
2742
2743     case "$cpu" in
2744         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2745             disable fast_clz
2746         ;;
2747     esac
2748
2749 fi
2750
2751 if enabled asm; then
2752     as=${gas:=$as}
2753     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2754         $nogas "GNU assembler not found, install gas-preprocessor"
2755 fi
2756
2757 check_ldflags -Wl,--as-needed
2758
2759 if check_func dlopen; then
2760     ldl=
2761 elif check_func dlopen -ldl; then
2762     ldl=-ldl
2763 fi
2764
2765 if enabled network; then
2766     check_type "sys/types.h sys/socket.h" socklen_t
2767     check_type netdb.h "struct addrinfo"
2768     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2769     check_type netinet/in.h "struct sockaddr_in6"
2770     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2771     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2772     # Prefer arpa/inet.h over winsock2
2773     if check_header arpa/inet.h ; then
2774         check_func closesocket
2775     elif check_header winsock2.h ; then
2776         check_func_headers winsock2.h closesocket -lws2 && \
2777             network_extralibs="-lws2" || \
2778         { check_func_headers winsock2.h closesocket -lws2_32 && \
2779             network_extralibs="-lws2_32"; }
2780         check_type ws2tcpip.h socklen_t
2781         check_type ws2tcpip.h "struct addrinfo"
2782         check_type ws2tcpip.h "struct ipv6_mreq"
2783         check_type ws2tcpip.h "struct sockaddr_in6"
2784         check_type ws2tcpip.h "struct sockaddr_storage"
2785         check_struct winsock2.h "struct sockaddr" sa_len
2786     else
2787         disable network
2788     fi
2789 fi
2790
2791 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2792 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2793
2794 check_func  fcntl
2795 check_func  fork
2796 check_func  getaddrinfo $network_extralibs
2797 check_func  gethrtime
2798 check_func  getrusage
2799 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2800 check_func  inet_aton $network_extralibs
2801 check_func  isatty
2802 check_func  localtime_r
2803 check_func  ${malloc_prefix}memalign            && enable memalign
2804 check_func  mkstemp
2805 check_func  mmap
2806 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2807 check_func  setrlimit
2808 check_func  strerror_r
2809 check_func  strtok_r
2810 check_func_headers io.h setmode
2811 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2812 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2813 check_func_headers windows.h GetProcessTimes
2814 check_func_headers windows.h MapViewOfFile
2815 check_func_headers windows.h VirtualAlloc
2816
2817 check_header dlfcn.h
2818 check_header dxva2api.h
2819 check_header malloc.h
2820 check_header poll.h
2821 check_header sys/mman.h
2822 check_header sys/resource.h
2823 check_header sys/select.h
2824 check_header vdpau/vdpau.h
2825 check_header vdpau/vdpau_x11.h
2826 check_header X11/extensions/XvMClib.h
2827
2828 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2829
2830 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2831 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2832
2833 # check for some common methods of building with pthread support
2834 # do this before the optional library checks as some of them require pthreads
2835 if ! disabled pthreads && ! enabled w32threads; then
2836     enable pthreads
2837     if check_func pthread_create; then
2838         :
2839     elif check_func pthread_create -pthread; then
2840         add_cflags -pthread
2841         add_extralibs -pthread
2842     elif check_func pthread_create -pthreads; then
2843         add_cflags -pthreads
2844         add_extralibs -pthreads
2845     elif check_func pthread_create -lpthreadGC2; then
2846         add_extralibs -lpthreadGC2
2847     elif ! check_lib pthread.h pthread_create -lpthread; then
2848         disable pthreads
2849     fi
2850 fi
2851
2852 for thread in $THREADS_LIST; do
2853     if enabled $thread; then
2854         test -n "$thread_type" &&
2855             die "ERROR: Only one thread type must be selected." ||
2856             thread_type="$thread"
2857     fi
2858 done
2859
2860 check_lib math.h sin -lm && LIBM="-lm"
2861 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2862
2863 check_mathfunc exp2
2864 check_mathfunc exp2f
2865 check_mathfunc llrint
2866 check_mathfunc llrintf
2867 check_mathfunc log2
2868 check_mathfunc log2f
2869 check_mathfunc lrint
2870 check_mathfunc lrintf
2871 check_mathfunc round
2872 check_mathfunc roundf
2873 check_mathfunc trunc
2874 check_mathfunc truncf
2875
2876 # these are off by default, so fail if requested and not available
2877 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2878 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2879 enabled libdirac   && require_pkg_config dirac                          \
2880     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2881     "dirac_decoder_init dirac_encoder_init"
2882 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2883 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2884 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2885 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2886 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2887 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2888 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2889 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2890 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2891 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2892 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2893 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2894 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2895 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2896 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2897 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2898 enabled libvpx     && {
2899     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2900                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2901     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2902                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2903 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2904                       { check_cpp_condition x264.h "X264_BUILD >= 115" ||
2905                         die "ERROR: libx264 version must be >= 0.115."; }
2906 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2907 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2908 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2909
2910 # libdc1394 check
2911 if enabled libdc1394; then
2912     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2913         enable libdc1394_2; } ||
2914     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2915         enable libdc1394_1; } ||
2916     die "ERROR: No version of libdc1394 found "
2917 fi
2918
2919 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2920     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2921     enable sdl &&
2922     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2923 fi
2924
2925 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2926
2927 check_header linux/fb.h
2928 check_header linux/videodev.h
2929 check_header linux/videodev2.h
2930 check_header sys/videoio.h
2931
2932 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2933 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2934 # w32api 3.12 had it defined wrong
2935 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2936
2937 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2938 { check_header dev/bktr/ioctl_meteor.h &&
2939   check_header dev/bktr/ioctl_bt848.h; } ||
2940 { check_header machine/ioctl_meteor.h &&
2941   check_header machine/ioctl_bt848.h; } ||
2942 { check_header dev/video/meteor/ioctl_meteor.h &&
2943   check_header dev/video/bktr/ioctl_bt848.h; } ||
2944 check_header dev/ic/bt8xx.h
2945
2946 check_header sndio.h
2947 check_header sys/soundcard.h
2948 check_header soundcard.h
2949
2950 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2951
2952 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
2953
2954 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2955
2956 enabled x11grab                         &&
2957 check_header X11/Xlib.h                 &&
2958 check_header X11/extensions/XShm.h      &&
2959 check_header X11/extensions/Xfixes.h    &&
2960 check_func XOpenDisplay -lX11           &&
2961 check_func XShmCreateImage -lX11 -lXext &&
2962 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2963
2964 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2965 check_cpp_condition \
2966     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
2967     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
2968       disable vdpau; }
2969 fi
2970
2971 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
2972
2973 # add some useful compiler flags if supported
2974 check_cflags -Wdeclaration-after-statement
2975 check_cflags -Wall
2976 check_cflags -Wno-parentheses
2977 check_cflags -Wno-switch
2978 check_cflags -Wdisabled-optimization
2979 check_cflags -Wpointer-arith
2980 check_cflags -Wredundant-decls
2981 check_cflags -Wno-pointer-sign
2982 check_cflags -Wcast-qual
2983 check_cflags -Wwrite-strings
2984 check_cflags -Wtype-limits
2985 check_cflags -Wundef
2986 check_cflags -Wmissing-prototypes
2987 enabled extra_warnings && check_cflags -Winline
2988
2989 # add some linker flags
2990 check_ldflags -Wl,--warn-common
2991 check_ldflags '-Wl,-rpath-link,\$(BUILD_ROOT)/libpostproc -Wl,-rpath-link,\$(BUILD_ROOT)/libswscale -Wl,-rpath-link,\$(BUILD_ROOT)/libavfilter -Wl,-rpath-link,\$(BUILD_ROOT)/libavdevice -Wl,-rpath-link,\$(BUILD_ROOT)/libavformat -Wl,-rpath-link,\$(BUILD_ROOT)/libavcodec -Wl,-rpath-link,\$(BUILD_ROOT)/libavutil'
2992 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
2993
2994 echo "X{};" > $TMPV
2995 if test_ldflags -Wl,--version-script,$TMPV; then
2996     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
2997     check_cc <<EOF && enable symver_asm_label
2998 void ff_foo(void) __asm__ ("av_foo@VERSION");
2999 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3000 EOF
3001     check_cc <<EOF && enable symver_gnu_asm
3002 __asm__(".symver ff_foo,av_foo@VERSION");
3003 void ff_foo(void) {}
3004 EOF
3005 fi
3006
3007 if enabled small; then
3008     add_cflags $size_cflags
3009     optimizations="small"
3010 elif enabled optimizations; then
3011     add_cflags $speed_cflags
3012 else
3013     add_cflags $noopt_cflags
3014 fi
3015 check_cflags -fno-math-errno
3016 check_cflags -fno-signed-zeros
3017
3018 if enabled icc; then
3019     # Just warnings, no remarks
3020     check_cflags -w1
3021     # -wd: Disable following warnings
3022     # 144, 167, 556: -Wno-pointer-sign
3023     # 1292: attribute "foo" ignored
3024     # 10006: ignoring unknown option -fno-signed-zeros
3025     # 10148: ignoring unknown option -Wno-parentheses
3026     # 10156: ignoring option '-W'; no argument required
3027     check_cflags -wd144,167,556,1292,10006,10148,10156
3028     # 11030: Warning unknown option --as-needed
3029     # 10156: ignoring option '-export'; no argument required
3030     check_ldflags -wd10156,11030
3031     # Allow to compile with optimizations
3032     check_ldflags -march=$cpu
3033     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3034     enable ebp_available
3035     if enabled x86_32; then
3036         test ${icc_version%%.*} -ge 11 && \
3037             check_cflags -falign-stack=maintain-16-byte || \
3038             disable aligned_stack
3039     fi
3040 elif enabled ccc; then
3041     # disable some annoying warnings
3042     add_cflags -msg_disable cvtu32to64
3043     add_cflags -msg_disable embedcomment
3044     add_cflags -msg_disable needconstext
3045     add_cflags -msg_disable nomainieee
3046     add_cflags -msg_disable ptrmismatch1
3047     add_cflags -msg_disable unreachcode
3048 elif enabled gcc; then
3049     check_cflags -fno-tree-vectorize
3050     check_cflags -Werror=implicit-function-declaration
3051     check_cflags -Werror=missing-prototypes
3052 elif enabled llvm_gcc; then
3053     check_cflags -mllvm -stack-alignment=16
3054 elif enabled clang; then
3055     check_cflags -mllvm -stack-alignment=16
3056     check_cflags -Qunused-arguments
3057 elif enabled armcc; then
3058     # 2523: use of inline assembler is deprecated
3059     add_cflags -W${armcc_opt},--diag_suppress=2523
3060     add_cflags -W${armcc_opt},--diag_suppress=1207
3061     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3062     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3063 elif enabled tms470; then
3064     add_cflags -pds=824 -pds=837
3065 elif enabled pathscale; then
3066     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3067 fi
3068
3069 enabled_any $THREADS_LIST      && enable threads
3070
3071 check_deps $CONFIG_LIST       \
3072            $CONFIG_EXTRA      \
3073            $HAVE_LIST         \
3074            $DECODER_LIST      \
3075            $ENCODER_LIST      \
3076            $HWACCEL_LIST      \
3077            $PARSER_LIST       \
3078            $BSF_LIST          \
3079            $DEMUXER_LIST      \
3080            $MUXER_LIST        \
3081            $FILTER_LIST       \
3082            $INDEV_LIST        \
3083            $OUTDEV_LIST       \
3084            $PROTOCOL_LIST     \
3085            $ACODEC_TESTS      \
3086            $VCODEC_TESTS      \
3087            $LAVF_TESTS        \
3088            $LAVFI_TESTS       \
3089            $SEEK_TESTS        \
3090
3091 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3092
3093 ! enabled_any memalign posix_memalign malloc_aligned &&
3094     enabled_any $need_memalign && enable memalign_hack
3095
3096 echo "install prefix            $prefix"
3097 echo "source path               $source_path"
3098 echo "C compiler                $cc"
3099 echo "ARCH                      $arch ($cpu)"
3100 if test "$build_suffix" != ""; then
3101     echo "build suffix              $build_suffix"
3102 fi
3103 if test "$extra_version" != ""; then
3104     echo "version string suffix     $extra_version"
3105 fi
3106 echo "big-endian                ${bigendian-no}"
3107 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3108 if enabled x86; then
3109     echo "${yasmexe}                      ${yasm-no}"
3110     echo "MMX enabled               ${mmx-no}"
3111     echo "MMX2 enabled              ${mmx2-no}"
3112     echo "3DNow! enabled            ${amd3dnow-no}"
3113     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3114     echo "SSE enabled               ${sse-no}"
3115     echo "SSSE3 enabled             ${ssse3-no}"
3116     echo "AVX enabled               ${avx-no}"
3117     echo "CMOV enabled              ${cmov-no}"
3118     echo "CMOV is fast              ${fast_cmov-no}"
3119     echo "EBX available             ${ebx_available-no}"
3120     echo "EBP available             ${ebp_available-no}"
3121     echo "10 operands supported     ${ten_operands-no}"
3122 fi
3123 if enabled arm; then
3124     echo "ARMv5TE enabled           ${armv5te-no}"
3125     echo "ARMv6 enabled             ${armv6-no}"
3126     echo "ARMv6T2 enabled           ${armv6t2-no}"
3127     echo "ARM VFP enabled           ${armvfp-no}"
3128     echo "IWMMXT enabled            ${iwmmxt-no}"
3129     echo "NEON enabled              ${neon-no}"
3130 fi
3131 if enabled mips; then
3132     echo "MMI enabled               ${mmi-no}"
3133 fi
3134 if enabled ppc; then
3135     echo "AltiVec enabled           ${altivec-no}"
3136     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3137     echo "dcbzl available           ${dcbzl-no}"
3138 fi
3139 if enabled sparc; then
3140     echo "VIS enabled               ${vis-no}"
3141 fi
3142 echo "debug symbols             ${debug-no}"
3143 echo "optimizations             ${optimizations-no}"
3144 echo "static                    ${static-no}"
3145 echo "shared                    ${shared-no}"
3146 echo "postprocessing support    ${postproc-no}"
3147 echo "new filter support        ${avfilter-no}"
3148 echo "network support           ${network-no}"
3149 echo "threading support         ${thread_type-no}"
3150 echo "SDL support               ${sdl-no}"
3151 echo "Sun medialib support      ${mlib-no}"
3152 echo "AVISynth enabled          ${avisynth-no}"
3153 echo "frei0r enabled            ${frei0r-no}"
3154 echo "libdc1394 support         ${libdc1394-no}"
3155 echo "libdirac enabled          ${libdirac-no}"
3156 echo "libfaac enabled           ${libfaac-no}"
3157 echo "libgsm enabled            ${libgsm-no}"
3158 echo "libmp3lame enabled        ${libmp3lame-no}"
3159 echo "libnut enabled            ${libnut-no}"
3160 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3161 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3162 echo "libopencv support         ${libopencv-no}"
3163 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3164 echo "librtmp enabled           ${librtmp-no}"
3165 echo "libschroedinger enabled   ${libschroedinger-no}"
3166 echo "libspeex enabled          ${libspeex-no}"
3167 echo "libtheora enabled         ${libtheora-no}"
3168 echo "libva enabled             ${vaapi-no}"
3169 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3170 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3171 echo "libvorbis enabled         ${libvorbis-no}"
3172 echo "libvpx enabled            ${libvpx-no}"
3173 echo "libx264 enabled           ${libx264-no}"
3174 echo "libxavs enabled           ${libxavs-no}"
3175 echo "libxvid enabled           ${libxvid-no}"
3176 echo "zlib enabled              ${zlib-no}"
3177 echo "bzlib enabled             ${bzlib-no}"
3178 echo
3179
3180 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3181     echo "Enabled ${type}s:"
3182     eval list=\$$(toupper $type)_LIST
3183     print_enabled '_*' $list | sort | pr -r -3 -t
3184     echo
3185 done
3186
3187 license="LGPL version 2.1 or later"
3188 if enabled nonfree; then
3189     license="nonfree and unredistributable"
3190 elif enabled gplv3; then
3191     license="GPL version 3 or later"
3192 elif enabled lgplv3; then
3193     license="LGPL version 3 or later"
3194 elif enabled gpl; then
3195     license="GPL version 2 or later"
3196 fi
3197
3198 echo "License: $license"
3199
3200 echo "Creating config.mak and config.h..."
3201
3202 # build tree in object directory if source path is different from current one
3203 if enabled source_path_used; then
3204     DIRS="
3205         doc
3206         libavcodec
3207         libavcodec/$arch
3208         libavdevice
3209         libavfilter
3210         libavfilter/$arch
3211         libavformat
3212         libavutil
3213         libavutil/$arch
3214         libpostproc
3215         libswscale
3216         libswscale/$arch
3217         tests
3218         tools
3219     "
3220     FILES="
3221         Makefile
3222         common.mak
3223         subdir.mak
3224         doc/texi2pod.pl
3225         libavcodec/Makefile
3226         libavcodec/${arch}/Makefile
3227         libavdevice/Makefile
3228         libavfilter/Makefile
3229         libavfilter/${arch}/Makefile
3230         libavformat/Makefile
3231         libavutil/Makefile
3232         libpostproc/Makefile
3233         libswscale/Makefile
3234     "
3235     map 'mkdir -p $v' $DIRS;
3236     map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
3237 fi
3238
3239 config_files="$TMPH config.mak"
3240
3241 cat > config.mak <<EOF
3242 # Automatically generated by configure - do not modify!
3243 ifndef LIBAV_CONFIG_MAK
3244 LIBAV_CONFIG_MAK=1
3245 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3246 prefix=$prefix
3247 LIBDIR=\$(DESTDIR)$libdir
3248 SHLIBDIR=\$(DESTDIR)$shlibdir
3249 INCDIR=\$(DESTDIR)$incdir
3250 BINDIR=\$(DESTDIR)$bindir
3251 DATADIR=\$(DESTDIR)$datadir
3252 MANDIR=\$(DESTDIR)$mandir
3253 SRC_PATH="$source_path"
3254 SRC_PATH_BARE=$source_path
3255 BUILD_ROOT="$PWD"
3256 CC_IDENT=$cc_ident
3257 ARCH=$arch
3258 CC=$cc
3259 AS=$as
3260 LD=$ld
3261 DEPCC=$dep_cc
3262 YASM=$yasmexe
3263 YASMDEP=$yasmexe
3264 AR=$ar
3265 RANLIB=$ranlib
3266 LN_S=$ln_s
3267 CPPFLAGS=$CPPFLAGS
3268 CFLAGS=$CFLAGS
3269 ASFLAGS=$ASFLAGS
3270 CC_O=$CC_O
3271 DLLTOOL=$dlltool
3272 LDFLAGS=$LDFLAGS
3273 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3274 SHFLAGS=$SHFLAGS
3275 YASMFLAGS=$YASMFLAGS
3276 BUILDSUF=$build_suffix
3277 FULLNAME=$FULLNAME
3278 LIBPREF=$LIBPREF
3279 LIBSUF=$LIBSUF
3280 LIBNAME=$LIBNAME
3281 SLIBPREF=$SLIBPREF
3282 SLIBSUF=$SLIBSUF
3283 EXESUF=$EXESUF
3284 EXTRA_VERSION=$extra_version
3285 DEPFLAGS=$DEPFLAGS
3286 CCDEP=$CCDEP
3287 ASDEP=$ASDEP
3288 CC_DEPFLAGS=$CC_DEPFLAGS
3289 AS_DEPFLAGS=$AS_DEPFLAGS
3290 HOSTCC=$host_cc
3291 HOSTCFLAGS=$host_cflags
3292 HOSTEXESUF=$HOSTEXESUF
3293 HOSTLDFLAGS=$host_ldflags
3294 HOSTLIBS=$host_libs
3295 TARGET_EXEC=$target_exec
3296 TARGET_PATH=$target_path
3297 SDL_LIBS=$sdl_libs
3298 SDL_CFLAGS=$sdl_cflags
3299 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3300 EXTRALIBS=$extralibs
3301 INSTALL=install
3302 LIBTARGET=${LIBTARGET}
3303 SLIBNAME=${SLIBNAME}
3304 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3305 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3306 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3307 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3308 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3309 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3310 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3311 EOF
3312
3313 get_version(){
3314     name=$1
3315     file=$source_path/$2
3316     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3317     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3318     lcname=$(tolower $name)
3319     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3320     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3321 }
3322
3323 get_version LIBSWSCALE  libswscale/swscale.h
3324 get_version LIBPOSTPROC libpostproc/postprocess.h
3325 get_version LIBAVCODEC  libavcodec/version.h
3326 get_version LIBAVDEVICE libavdevice/avdevice.h
3327 get_version LIBAVFORMAT libavformat/version.h
3328 get_version LIBAVUTIL   libavutil/avutil.h
3329 get_version LIBAVFILTER libavfilter/avfilter.h
3330
3331 cat > $TMPH <<EOF
3332 /* Automatically generated by configure - do not modify! */
3333 #ifndef LIBAV_CONFIG_H
3334 #define LIBAV_CONFIG_H
3335 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3336 #define LIBAV_LICENSE "$(c_escape $license)"
3337 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3338 #define CC_TYPE "$cc_type"
3339 #define CC_VERSION $cc_version
3340 #define restrict $_restrict
3341 #define EXTERN_PREFIX "${extern_prefix}"
3342 #define EXTERN_ASM ${extern_prefix}
3343 #define SLIBSUF "$SLIBSUF"
3344 EOF
3345
3346 test -n "$malloc_prefix" &&
3347     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3348
3349 if enabled small || disabled optimizations; then
3350     echo "#undef  av_always_inline"  >> $TMPH
3351     if enabled small; then
3352         echo "#define av_always_inline inline"  >> $TMPH
3353     else
3354         echo "#define av_always_inline av_unused"  >> $TMPH
3355     fi
3356 fi
3357
3358 if enabled yasm; then
3359     append config_files $TMPASM
3360     printf '' >$TMPASM
3361 fi
3362
3363 print_config ARCH_   "$config_files" $ARCH_LIST
3364 print_config HAVE_   "$config_files" $HAVE_LIST
3365 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3366                                      $CONFIG_EXTRA      \
3367                                      $DECODER_LIST      \
3368                                      $ENCODER_LIST      \
3369                                      $HWACCEL_LIST      \
3370                                      $PARSER_LIST       \
3371                                      $BSF_LIST          \
3372                                      $DEMUXER_LIST      \
3373                                      $MUXER_LIST        \
3374                                      $FILTER_LIST       \
3375                                      $PROTOCOL_LIST     \
3376                                      $INDEV_LIST        \
3377                                      $OUTDEV_LIST       \
3378
3379 cat >>config.mak <<EOF
3380 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3381 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3382 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3383 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3384 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3385 EOF
3386
3387 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3388 echo "endif # LIBAV_CONFIG_MAK" >> config.mak
3389
3390 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3391 cp_if_changed $TMPH config.h
3392 touch .config
3393
3394 enabled yasm && cp_if_changed $TMPASM config.asm
3395
3396 cat > $TMPH <<EOF
3397 /* Generated by ffconf */
3398 #ifndef AVUTIL_AVCONFIG_H
3399 #define AVUTIL_AVCONFIG_H
3400 EOF
3401
3402 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3403
3404 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3405
3406 cp_if_changed $TMPH libavutil/avconfig.h
3407
3408 test -n "$WARNINGS" && printf "\n$WARNINGS"
3409
3410 # build pkg-config files
3411
3412 pkgconfig_generate(){
3413 name=$1
3414 shortname=${name#lib}${build_suffix}
3415 comment=$2
3416 version=$3
3417 libs=$4
3418 requires=$5
3419 enabled ${name#lib} || return 0
3420 cat <<EOF > $name/$name.pc
3421 prefix=$prefix
3422 exec_prefix=\${prefix}
3423 libdir=$libdir
3424 includedir=$incdir
3425
3426 Name: $name
3427 Description: $comment
3428 Version: $version
3429 Requires: $(enabled shared || echo $requires)
3430 Requires.private: $(enabled shared && echo $requires)
3431 Conflicts:
3432 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3433 Libs.private: $(enabled shared && echo $libs)
3434 Cflags: -I\${includedir}
3435 EOF
3436 cat <<EOF > $name/$name-uninstalled.pc
3437 prefix=
3438 exec_prefix=
3439 libdir=\${pcfiledir}
3440 includedir=${source_path}
3441
3442 Name: $name
3443 Description: $comment
3444 Version: $version
3445 Requires: $requires
3446 Conflicts:
3447 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3448 Cflags: -I\${includedir}
3449 EOF
3450 }
3451
3452 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3453 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3454 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3455 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3456 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3457 pkgconfig_generate libpostproc "Libav post processing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3458 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"