configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 show_help(){
  58 cat <<EOF
  59 Usage: configure [options]
  60 Options: [defaults in brackets after descriptions]
  61
  62 Standard options:
  63   --help                   print this message
  64   --logfile=FILE           log tests and output to FILE [config.log]
  65   --disable-logging        do not log configure debug information
  66   --prefix=PREFIX          install in PREFIX [$prefix]
  67   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  68   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  69   --libdir=DIR             install libs in DIR [PREFIX/lib]
  70   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  71   --incdir=DIR             install includes in DIR [PREFIX/include]
  72   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  73
  74 Configuration options:
  75   --disable-static         do not build static libraries [no]
  76   --enable-shared          build shared libraries [no]
  77   --enable-gpl             allow use of GPL code, the resulting libs
  78                            and binaries will be under GPL [no]
  79   --enable-version3        upgrade (L)GPL to version 3 [no]
  80   --enable-nonfree         allow use of nonfree code, the resulting libs
  81                            and binaries will be unredistributable [no]
  82   --disable-doc            do not build documentation
  83   --disable-ffmpeg         disable ffmpeg build
  84   --disable-ffplay         disable ffplay build
  85   --disable-ffprobe        disable ffprobe build
  86   --disable-ffserver       disable ffserver build
  87   --disable-avdevice       disable libavdevice build
  88   --disable-avcodec        disable libavcodec build
  89   --disable-avformat       disable libavformat build
  90   --disable-swscale        disable libswscale build
  91   --disable-postproc       disable libpostproc build
  92   --disable-avfilter       disable video filter support [no]
  93   --disable-pthreads       disable pthreads [auto]
  94   --enable-w32threads      use Win32 threads [no]
  95   --enable-x11grab         enable X11 grabbing [no]
  96   --disable-network        disable network support [no]
  97   --enable-gray            enable full grayscale support (slower color)
  98   --disable-swscale-alpha  disable alpha channel support in swscale
  99   --disable-fastdiv        disable table-based division
 100   --enable-small           optimize for size instead of speed
 101   --disable-aandct         disable AAN DCT code
 102   --disable-dct            disable DCT code
 103   --disable-fft            disable FFT code
 104   --disable-golomb         disable Golomb code
 105   --disable-huffman        disable Huffman code
 106   --disable-lpc            disable LPC code
 107   --disable-mdct           disable MDCT code
 108   --disable-rdft           disable RDFT code
 109   --enable-vaapi           enable VAAPI code [autodetect]
 110   --enable-vdpau           enable VDPAU code [autodetect]
 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-libcelt         enable CELT/Opus decoding via libcelt [no]
 164   --enable-frei0r          enable frei0r video filtering
 165   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 166   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 167   --enable-libopencv       enable video filtering via libopencv [no]
 168   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 169                            and libraw1394 [no]
 170   --enable-libdirac        enable Dirac support via libdirac [no]
 171   --enable-libfaac         enable FAAC support via libfaac [no]
 172   --enable-libfreetype     enable libfreetype [no]
 173   --enable-libgsm          enable GSM support via libgsm [no]
 174   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 175   --enable-libnut          enable NUT (de)muxing via libnut,
 176                            native (de)muxer exists [no]
 177   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
 178   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 179   --enable-libschroedinger enable Dirac support via libschroedinger [no]
 180   --enable-libspeex        enable Speex decoding via libspeex [no]
 181   --enable-libtheora       enable Theora encoding via libtheora [no]
 182   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 183   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 184   --enable-libvorbis       enable Vorbis encoding via libvorbis,
 185                            native implementation exists [no]
 186   --enable-libvpx          enable VP8 support via libvpx [no]
 187   --enable-libx264         enable H.264 encoding via x264 [no]
 188   --enable-libxavs         enable AVS encoding via xavs [no]
 189   --enable-libxvid         enable Xvid encoding via xvidcore,
 190                            native MPEG-4/Xvid encoder exists [no]
 191   --enable-openal          enable OpenAL 1.1 capture support [no]
 192   --enable-mlib            enable Sun medialib [no]
 193   --enable-zlib            enable zlib [autodetect]
 194
 195 Advanced options (experts only):
 196   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 197   --enable-cross-compile   assume a cross-compiler is used
 198   --sysroot=PATH           root of cross-build tree
 199   --sysinclude=PATH        location of cross-build system headers
 200   --target-os=OS           compiler targets OS [$target_os]
 201   --target-exec=CMD        command to run executables on target
 202   --target-path=DIR        path to view of build directory on target
 203   --nm=NM                  use nm tool
 204   --ar=AR                  use archive tool AR [$ar_default]
 205   --as=AS                  use assembler AS [$as_default]
 206   --cc=CC                  use C compiler CC [$cc_default]
 207   --ld=LD                  use linker LD
 208   --host-cc=HOSTCC         use host C compiler HOSTCC
 209   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 210   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 211   --host-libs=HLIBS        use libs HLIBS when linking for host
 212   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 213   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 214   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 215   --extra-version=STRING   version string suffix []
 216   --build-suffix=SUFFIX    library name suffix []
 217   --arch=ARCH              select architecture [$arch]
 218   --cpu=CPU                select the minimum required CPU (affects
 219                            instruction selection, may crash on older CPUs)
 220   --disable-asm            disable all assembler optimizations
 221   --disable-altivec        disable AltiVec optimizations
 222   --disable-amd3dnow       disable 3DNow! optimizations
 223   --disable-amd3dnowext    disable 3DNow! extended optimizations
 224   --disable-mmx            disable MMX optimizations
 225   --disable-mmx2           disable MMX2 optimizations
 226   --disable-sse            disable SSE optimizations
 227   --disable-ssse3          disable SSSE3 optimizations
 228   --disable-avx            disable AVX optimizations
 229   --disable-armv5te        disable armv5te optimizations
 230   --disable-armv6          disable armv6 optimizations
 231   --disable-armv6t2        disable armv6t2 optimizations
 232   --disable-armvfp         disable ARM VFP optimizations
 233   --disable-iwmmxt         disable iwmmxt optimizations
 234   --disable-mmi            disable MMI optimizations
 235   --disable-neon           disable neon optimizations
 236   --disable-vis            disable VIS optimizations
 237   --disable-yasm           disable use of yasm assembler
 238   --enable-pic             build position-independent code
 239   --malloc-prefix=PFX      prefix malloc and related names with PFX
 240   --enable-sram            allow use of on-chip SRAM
 241   --disable-symver         disable symbol versioning
 242   --optflags               override optimization-related compiler flags
 243
 244 Developer options (useful when working on FFmpeg itself):
 245   --disable-debug          disable debugging symbols
 246   --enable-debug=LEVEL     set the debug level [$debuglevel]
 247   --disable-optimizations  disable compiler optimizations
 248   --enable-extra-warnings  enable more compiler warnings
 249   --disable-stripping      disable stripping of executables and shared libraries
 250   --samples=PATH           location of test samples for FATE, if not set use
 251                            \$FATE_SAMPLES at make invocation time.
 252
 253 NOTE: Object files are built at the place where configure is launched.
 254 EOF
 255   exit 0
 256 }
 257
 258 quotes='""'
 259
 260 log(){
 261     echo "$@" >> $logfile
 262 }
 263
 264 log_file(){
 265     log BEGIN $1
 266     pr -n -t $1 >> $logfile
 267     log END $1
 268 }
 269
 270 echolog(){
 271     log "$@"
 272     echo "$@"
 273 }
 274
 275 warn(){
 276     log "WARNING: $*"
 277     WARNINGS="${WARNINGS}WARNING: $*\n"
 278 }
 279
 280 die(){
 281     echolog "$@"
 282     cat <<EOF
 283
 284 If you think configure made a mistake, make sure you are using the latest
 285 version from Git.  If the latest version fails, report the problem to the
 286 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 287 EOF
 288     if disabled logging; then
 289         cat <<EOF
 290 Rerun configure with logging enabled (do not use --disable-logging), and
 291 include the log this produces with your report.
 292 EOF
 293     else
 294 cat <<EOF
 295 Include the log file "$logfile" produced by configure as this will help
 296 solving the problem.
 297 EOF
 298     fi
 299     exit 1
 300 }
 301
 302 # Avoid locale weirdness, besides we really just want to translate ASCII.
 303 toupper(){
 304     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 305 }
 306
 307 tolower(){
 308     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 309 }
 310
 311 c_escape(){
 312     echo "$*" | sed 's/["\\]/\\\0/g'
 313 }
 314
 315 sh_quote(){
 316     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 317     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 318     echo "$v"
 319 }
 320
 321 cleanws(){
 322     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 323 }
 324
 325 filter(){
 326     pat=$1
 327     shift
 328     for v; do
 329         eval "case $v in $pat) echo $v ;; esac"
 330     done
 331 }
 332
 333 filter_out(){
 334     pat=$1
 335     shift
 336     for v; do
 337         eval "case $v in $pat) ;; *) echo $v ;; esac"
 338     done
 339 }
 340
 341 map(){
 342     m=$1
 343     shift
 344     for v; do eval $m; done
 345 }
 346
 347 set_all(){
 348     value=$1
 349     shift
 350     for var in $*; do
 351         eval $var=$value
 352     done
 353 }
 354
 355 set_weak(){
 356     value=$1
 357     shift
 358     for var; do
 359         eval : \${$var:=$value}
 360     done
 361 }
 362
 363 set_safe(){
 364     var=$1
 365     shift
 366     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 367 }
 368
 369 get_safe(){
 370     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 371 }
 372
 373 pushvar(){
 374     for var in $*; do
 375         eval level=\${${var}_level:=0}
 376         eval ${var}_${level}="\$$var"
 377         eval ${var}_level=$(($level+1))
 378     done
 379 }
 380
 381 popvar(){
 382     for var in $*; do
 383         eval level=\${${var}_level:-0}
 384         test $level = 0 && continue
 385         eval level=$(($level-1))
 386         eval $var="\${${var}_${level}}"
 387         eval ${var}_level=$level
 388         eval unset ${var}_${level}
 389     done
 390 }
 391
 392 enable(){
 393     set_all yes $*
 394 }
 395
 396 disable(){
 397     set_all no $*
 398 }
 399
 400 enable_weak(){
 401     set_weak yes $*
 402 }
 403
 404 disable_weak(){
 405     set_weak no $*
 406 }
 407
 408 enable_safe(){
 409     for var; do
 410         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 411     done
 412 }
 413
 414 disable_safe(){
 415     for var; do
 416         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 417     done
 418 }
 419
 420 do_enable_deep(){
 421     for var; do
 422         enabled $var && continue
 423         eval sel="\$${var}_select"
 424         eval sgs="\$${var}_suggest"
 425         pushvar var sgs
 426         enable_deep $sel
 427         popvar sgs
 428         enable_deep_weak $sgs
 429         popvar var
 430     done
 431 }
 432
 433 enable_deep(){
 434     do_enable_deep $*
 435     enable $*
 436 }
 437
 438 enable_deep_weak(){
 439     do_enable_deep $*
 440     enable_weak $*
 441 }
 442
 443 enabled(){
 444     test "${1#!}" = "$1" && op== || op=!=
 445     eval test "x\$${1#!}" $op "xyes"
 446 }
 447
 448 disabled(){
 449     test "${1#!}" = "$1" && op== || op=!=
 450     eval test "x\$${1#!}" $op "xno"
 451 }
 452
 453 enabled_all(){
 454     for opt; do
 455         enabled $opt || return 1
 456     done
 457 }
 458
 459 disabled_all(){
 460     for opt; do
 461         disabled $opt || return 1
 462     done
 463 }
 464
 465 enabled_any(){
 466     for opt; do
 467         enabled $opt && return 0
 468     done
 469 }
 470
 471 disabled_any(){
 472     for opt; do
 473         disabled $opt && return 0
 474     done
 475     return 1
 476 }
 477
 478 set_default(){
 479     for opt; do
 480         eval : \${$opt:=\$${opt}_default}
 481     done
 482 }
 483
 484 is_in(){
 485     value=$1
 486     shift
 487     for var in $*; do
 488         [ $var = $value ] && return 0
 489     done
 490     return 1
 491 }
 492
 493 check_deps(){
 494     for cfg; do
 495         cfg="${cfg#!}"
 496         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 497         disabled ${cfg}_checking && continue
 498         enable ${cfg}_checking
 499
 500         eval dep_all="\$${cfg}_deps"
 501         eval dep_any="\$${cfg}_deps_any"
 502         eval dep_sel="\$${cfg}_select"
 503         eval dep_sgs="\$${cfg}_suggest"
 504         eval dep_ifa="\$${cfg}_if"
 505         eval dep_ifn="\$${cfg}_if_any"
 506
 507         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 508         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 509         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 510
 511         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 512         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 513         enabled_all  $dep_all || disable $cfg
 514         enabled_any  $dep_any || disable $cfg
 515         disabled_any $dep_sel && disable $cfg
 516
 517         if enabled $cfg; then
 518             eval dep_extralibs="\$${cfg}_extralibs"
 519             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 520             enable_deep $dep_sel
 521             enable_deep_weak $dep_sgs
 522         fi
 523
 524         disable ${cfg}_checking
 525     done
 526 }
 527
 528 print_config_h(){
 529     enabled $1 && v=1 || v=0
 530     echo "#define $2 $v"
 531 }
 532
 533 print_config_mak(){
 534     enabled $1 && v= || v=!
 535     echo "$v$2=yes"
 536 }
 537
 538 print_config_asm(){
 539     enabled $1 && echo "%define $2"
 540 }
 541
 542 print_config(){
 543     pfx=$1
 544     files=$2
 545     shift 2
 546     for cfg; do
 547         ucname="$(toupper $cfg)"
 548         for f in $files; do
 549             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
 550         done
 551     done
 552 }
 553
 554 print_enabled(){
 555     test "$1" = -n && end=" " && shift || end="\n"
 556     suf=$1
 557     shift
 558     for v; do
 559         enabled $v && printf "%s$end" ${v%$suf};
 560     done
 561 }
 562
 563 append(){
 564     var=$1
 565     shift
 566     eval "$var=\"\$$var $*\""
 567 }
 568
 569 prepend(){
 570     var=$1
 571     shift
 572     eval "$var=\"$* \$$var\""
 573 }
 574
 575 add_cppflags(){
 576     append CPPFLAGS $($filter_cppflags "$@")
 577 }
 578
 579 add_cflags(){
 580     append CFLAGS $($filter_cflags "$@")
 581 }
 582
 583 add_asflags(){
 584     append ASFLAGS $($filter_asflags "$@")
 585 }
 586
 587 add_ldflags(){
 588     append LDFLAGS "$@"
 589 }
 590
 591 add_extralibs(){
 592     prepend extralibs "$@"
 593 }
 594
 595 check_cmd(){
 596     log "$@"
 597     "$@" >> $logfile 2>&1
 598 }
 599
 600 check_cc(){
 601     log check_cc "$@"
 602     cat > $TMPC
 603     log_file $TMPC
 604     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
 605 }
 606
 607 check_cpp(){
 608     log check_cpp "$@"
 609     cat > $TMPC
 610     log_file $TMPC
 611     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
 612 }
 613
 614 check_as(){
 615     log check_as "$@"
 616     cat > $TMPC
 617     log_file $TMPC
 618     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
 619 }
 620
 621 check_asm(){
 622     log check_asm "$@"
 623     name="$1"
 624     code="$2"
 625     shift 2
 626     disable $name
 627     check_as "$@" <<EOF && enable $name
 628 void foo(void){ __asm__ volatile($code); }
 629 EOF
 630 }
 631
 632 check_yasm(){
 633     log check_yasm "$@"
 634     echo "$1" > $TMPS
 635     log_file $TMPS
 636     shift 1
 637     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 638 }
 639
 640 check_ld(){
 641     log check_ld "$@"
 642     flags=''
 643     libs=''
 644     for f; do
 645         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
 646     done
 647     check_cc $($filter_cflags $flags) || return
 648     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
 649 }
 650
 651 check_cppflags(){
 652     log check_cppflags "$@"
 653     set -- $($filter_cppflags "$@")
 654     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 655 int x;
 656 EOF
 657 }
 658
 659 check_cflags(){
 660     log check_cflags "$@"
 661     set -- $($filter_cflags "$@")
 662     check_cc "$@" <<EOF && append CFLAGS "$@"
 663 int x;
 664 EOF
 665 }
 666
 667 test_ldflags(){
 668     log test_ldflags "$@"
 669     check_ld "$@" <<EOF
 670 int main(void){ return 0; }
 671 EOF
 672 }
 673
 674 check_ldflags(){
 675     log check_ldflags "$@"
 676     test_ldflags "$@" && add_ldflags "$@"
 677 }
 678
 679 check_header(){
 680     log check_header "$@"
 681     header=$1
 682     shift
 683     disable_safe $header
 684     check_cpp "$@" <<EOF && enable_safe $header
 685 #include <$header>
 686 int x;
 687 EOF
 688 }
 689
 690 check_func(){
 691     log check_func "$@"
 692     func=$1
 693     shift
 694     disable $func
 695     check_ld "$@" <<EOF && enable $func
 696 extern int $func();
 697 int main(void){ $func(); }
 698 EOF
 699 }
 700
 701 check_mathfunc(){
 702     log check_mathfunc "$@"
 703     func=$1
 704     shift
 705     disable $func
 706     check_ld "$@" <<EOF && enable $func
 707 #include <math.h>
 708 float foo(float f) { return $func(f); }
 709 int main(void){ return 0; }
 710 EOF
 711 }
 712
 713 check_func_headers(){
 714     log check_func_headers "$@"
 715     headers=$1
 716     funcs=$2
 717     shift 2
 718     {
 719         for hdr in $headers; do
 720             echo "#include <$hdr>"
 721         done
 722         for func in $funcs; do
 723             echo "long check_$func(void) { return (long) $func; }"
 724         done
 725         echo "int main(void) { return 0; }"
 726     } | check_ld "$@" && enable $funcs && enable_safe $headers
 727 }
 728
 729 check_cpp_condition(){
 730     log check_cpp_condition "$@"
 731     header=$1
 732     condition=$2
 733     shift 2
 734     check_cpp $($filter_cppflags "$@") <<EOF
 735 #include <$header>
 736 #if !($condition)
 737 #error "unsatisfied condition: $condition"
 738 #endif
 739 EOF
 740 }
 741
 742 check_lib(){
 743     log check_lib "$@"
 744     header="$1"
 745     func="$2"
 746     shift 2
 747     check_header $header && check_func $func "$@" && add_extralibs "$@"
 748 }
 749
 750 check_lib2(){
 751     log check_lib2 "$@"
 752     headers="$1"
 753     funcs="$2"
 754     shift 2
 755     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 756 }
 757
 758 check_pkg_config(){
 759     log check_pkg_config "$@"
 760     pkg="$1"
 761     headers="$2"
 762     funcs="$3"
 763     shift 3
 764     $pkg_config --exists $pkg 2>/dev/null || return
 765     pkg_cflags=$($pkg_config --cflags $pkg)
 766     pkg_libs=$($pkg_config --libs $pkg)
 767     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 768         set_safe ${pkg}_cflags $pkg_cflags   &&
 769         set_safe ${pkg}_libs   $pkg_libs
 770 }
 771
 772 check_exec(){
 773     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 774 }
 775
 776 check_exec_crash(){
 777     code=$(cat)
 778
 779     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 780     # are safe but may not be available everywhere.  Thus we use
 781     # raise(SIGTERM) instead.  The check is run in a subshell so we
 782     # can redirect the "Terminated" message from the shell.  SIGBUS
 783     # is not defined by standard C so it is used conditionally.
 784
 785     (check_exec "$@") >> $logfile 2>&1 <<EOF
 786 #include <signal.h>
 787 static void sighandler(int sig){
 788     raise(SIGTERM);
 789 }
 790 int main(void){
 791     signal(SIGILL, sighandler);
 792     signal(SIGFPE, sighandler);
 793     signal(SIGSEGV, sighandler);
 794 #ifdef SIGBUS
 795     signal(SIGBUS, sighandler);
 796 #endif
 797     { $code }
 798 }
 799 EOF
 800 }
 801
 802 check_type(){
 803     log check_type "$@"
 804     headers=$1
 805     type=$2
 806     shift 2
 807     disable_safe "$type"
 808     incs=""
 809     for hdr in $headers; do
 810         incs="$incs
 811 #include <$hdr>"
 812     done
 813     check_cc "$@" <<EOF && enable_safe "$type"
 814 $incs
 815 $type v;
 816 EOF
 817 }
 818
 819 check_struct(){
 820     log check_type "$@"
 821     headers=$1
 822     struct=$2
 823     member=$3
 824     shift 3
 825     disable_safe "${struct}_${member}"
 826     incs=""
 827     for hdr in $headers; do
 828         incs="$incs
 829 #include <$hdr>"
 830     done
 831     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
 832 $incs
 833 const void *p = &(($struct *)0)->$member;
 834 EOF
 835 }
 836
 837 require(){
 838     name="$1"
 839     header="$2"
 840     func="$3"
 841     shift 3
 842     check_lib $header $func "$@" || die "ERROR: $name not found"
 843 }
 844
 845 require2(){
 846     name="$1"
 847     headers="$2"
 848     func="$3"
 849     shift 3
 850     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
 851 }
 852
 853 require_pkg_config(){
 854     pkg="$1"
 855     check_pkg_config "$@" || die "ERROR: $pkg not found"
 856     add_cflags    $(get_safe ${pkg}_cflags)
 857     add_extralibs $(get_safe ${pkg}_libs)
 858 }
 859
 860 check_host_cc(){
 861     log check_host_cc "$@"
 862     cat > $TMPC
 863     log_file $TMPC
 864     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
 865 }
 866
 867 check_host_cflags(){
 868     log check_host_cflags "$@"
 869     check_host_cc "$@" <<EOF && append host_cflags "$@"
 870 int x;
 871 EOF
 872 }
 873
 874 apply(){
 875     file=$1
 876     shift
 877     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
 878 }
 879
 880 cp_if_changed(){
 881     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
 882     mkdir -p "$(dirname $2)"
 883     cp -f "$1" "$2"
 884 }
 885
 886 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
 887 # system-dependent things.
 888
 889 COMPONENT_LIST="
 890     bsfs
 891     decoders
 892     demuxers
 893     encoders
 894     filters
 895     hwaccels
 896     indevs
 897     muxers
 898     outdevs
 899     parsers
 900     protocols
 901 "
 902
 903 CONFIG_LIST="
 904     $COMPONENT_LIST
 905     aandct
 906     ac3dsp
 907     avcodec
 908     avdevice
 909     avfilter
 910     avformat
 911     avisynth
 912     bzlib
 913     crystalhd
 914     dct
 915     doc
 916     dwt
 917     dxva2
 918     fastdiv
 919     ffmpeg
 920     ffplay
 921     ffprobe
 922     ffserver
 923     fft
 924     frei0r
 925     golomb
 926     gpl
 927     gray
 928     h264dsp
 929     h264pred
 930     hardcoded_tables
 931     huffman
 932     libcelt
 933     libdc1394
 934     libdirac
 935     libfaac
 936     libfreetype
 937     libgsm
 938     libmp3lame
 939     libnut
 940     libopencore_amrnb
 941     libopencore_amrwb
 942     libopencv
 943     libopenjpeg
 944     librtmp
 945     libschroedinger
 946     libspeex
 947     libtheora
 948     libvo_aacenc
 949     libvo_amrwbenc
 950     libvorbis
 951     libvpx
 952     libx264
 953     libxavs
 954     libxvid
 955     lpc
 956     lsp
 957     mdct
 958     memalign_hack
 959     mlib
 960     mpegaudiodsp
 961     network
 962     nonfree
 963     openal
 964     pic
 965     postproc
 966     rdft
 967     rtpdec
 968     runtime_cpudetect
 969     shared
 970     sinewin
 971     small
 972     sram
 973     static
 974     swscale
 975     swscale_alpha
 976     thumb
 977     vaapi
 978     vdpau
 979     version3
 980     x11grab
 981     zlib
 982 "
 983
 984 THREADS_LIST='
 985     pthreads
 986     w32threads
 987 '
 988
 989 ARCH_LIST='
 990     alpha
 991     arm
 992     avr32
 993     avr32_ap
 994     avr32_uc
 995     bfin
 996     ia64
 997     m68k
 998     mips
 999     mips64
1000     parisc
1001     ppc
1002     ppc64
1003     s390
1004     sh4
1005     sparc
1006     sparc64
1007     tomi
1008     x86
1009     x86_32
1010     x86_64
1011 '
1012
1013 ARCH_EXT_LIST='
1014     altivec
1015     amd3dnow
1016     amd3dnowext
1017     armv5te
1018     armv6
1019     armv6t2
1020     armvfp
1021     avx
1022     iwmmxt
1023     mmi
1024     mmx
1025     mmx2
1026     neon
1027     ppc4xx
1028     sse
1029     ssse3
1030     vfpv3
1031     vis
1032 '
1033
1034 HAVE_LIST_PUB='
1035     bigendian
1036     fast_unaligned
1037 '
1038
1039 HAVE_LIST="
1040     $ARCH_EXT_LIST
1041     $HAVE_LIST_PUB
1042     $THREADS_LIST
1043     aligned_stack
1044     alsa_asoundlib_h
1045     altivec_h
1046     arpa_inet_h
1047     attribute_may_alias
1048     attribute_packed
1049     bswap
1050     closesocket
1051     cmov
1052     dcbzl
1053     dev_bktr_ioctl_bt848_h
1054     dev_bktr_ioctl_meteor_h
1055     dev_ic_bt8xx_h
1056     dev_video_meteor_ioctl_meteor_h
1057     dev_video_bktr_ioctl_bt848_h
1058     dlfcn_h
1059     dlopen
1060     dos_paths
1061     ebp_available
1062     ebx_available
1063     exp2
1064     exp2f
1065     fast_64bit
1066     fast_clz
1067     fast_cmov
1068     fcntl
1069     fork
1070     getaddrinfo
1071     gethrtime
1072     GetProcessMemoryInfo
1073     GetProcessTimes
1074     getrusage
1075     gnu_as
1076     struct_rusage_ru_maxrss
1077     ibm_asm
1078     inet_aton
1079     inline_asm
1080     isatty
1081     kbhit
1082     ldbrx
1083     llrint
1084     llrintf
1085     local_aligned_16
1086     local_aligned_8
1087     localtime_r
1088     log2
1089     log2f
1090     loongson
1091     lrint
1092     lrintf
1093     lzo1x_999_compress
1094     machine_ioctl_bt848_h
1095     machine_ioctl_meteor_h
1096     malloc_h
1097     MapViewOfFile
1098     memalign
1099     mkstemp
1100     mmap
1101     posix_memalign
1102     round
1103     roundf
1104     sdl
1105     sdl_video_size
1106     setmode
1107     sndio_h
1108     socklen_t
1109     soundcard_h
1110     poll_h
1111     setrlimit
1112     strerror_r
1113     strptime
1114     strtok_r
1115     struct_addrinfo
1116     struct_ipv6_mreq
1117     struct_sockaddr_in6
1118     struct_sockaddr_sa_len
1119     struct_sockaddr_storage
1120     symver
1121     symver_gnu_asm
1122     symver_asm_label
1123     sys_mman_h
1124     sys_resource_h
1125     sys_select_h
1126     sys_soundcard_h
1127     sys_videoio_h
1128     termios_h
1129     threads
1130     trunc
1131     truncf
1132     vfp_args
1133     VirtualAlloc
1134     winsock2_h
1135     xform_asm
1136     xmm_clobbers
1137     yasm
1138 "
1139
1140 # options emitted with CONFIG_ prefix but not available on command line
1141 CONFIG_EXTRA="
1142     avutil
1143     gplv3
1144     lgplv3
1145 "
1146
1147 CMDLINE_SELECT="
1148     $ARCH_EXT_LIST
1149     $CONFIG_LIST
1150     $THREADS_LIST
1151     asm
1152     cross_compile
1153     debug
1154     extra_warnings
1155     logging
1156     optimizations
1157     stripping
1158     symver
1159     yasm
1160 "
1161
1162 PATHS_LIST='
1163     bindir
1164     datadir
1165     incdir
1166     libdir
1167     mandir
1168     prefix
1169     shlibdir
1170 '
1171
1172 CMDLINE_SET="
1173     $PATHS_LIST
1174     ar
1175     arch
1176     as
1177     build_suffix
1178     cc
1179     cpu
1180     cross_prefix
1181     dep_cc
1182     extra_version
1183     host_cc
1184     host_cflags
1185     host_ldflags
1186     host_libs
1187     host_os
1188     install
1189     ld
1190     logfile
1191     malloc_prefix
1192     nm
1193     optflags
1194     pkg_config
1195     samples
1196     strip
1197     sysinclude
1198     sysroot
1199     target_exec
1200     target_os
1201     target_path
1202 "
1203
1204 CMDLINE_APPEND="
1205     extra_cflags
1206 "
1207
1208 # code dependency declarations
1209
1210 # architecture extensions
1211
1212 armv5te_deps="arm"
1213 armv6_deps="arm"
1214 armv6t2_deps="arm"
1215 armvfp_deps="arm"
1216 iwmmxt_deps="arm"
1217 neon_deps="arm"
1218 vfpv3_deps="armvfp"
1219
1220 mmi_deps="mips"
1221
1222 altivec_deps="ppc"
1223 ppc4xx_deps="ppc"
1224
1225 vis_deps="sparc"
1226
1227 x86_64_suggest="cmov fast_cmov"
1228 amd3dnow_deps="mmx"
1229 amd3dnowext_deps="amd3dnow"
1230 mmx_deps="x86"
1231 mmx2_deps="mmx"
1232 sse_deps="mmx"
1233 ssse3_deps="sse"
1234 avx_deps="ssse3"
1235
1236 aligned_stack_if_any="ppc x86"
1237 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1238 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1239 fast_unaligned_if_any="armv6 ppc x86"
1240
1241 need_memalign="altivec neon sse"
1242 inline_asm_deps="!tms470"
1243
1244 symver_if_any="symver_asm_label symver_gnu_asm"
1245
1246 # subsystems
1247 dct_select="rdft"
1248 mdct_select="fft"
1249 rdft_select="fft"
1250 mpegaudiodsp_select="dct"
1251
1252 # decoders / encoders / hardware accelerators
1253 aac_decoder_select="mdct sinewin"
1254 aac_encoder_select="mdct sinewin"
1255 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1256 ac3_decoder_select="mdct ac3dsp ac3_parser"
1257 ac3_encoder_select="mdct ac3dsp"
1258 ac3_fixed_encoder_select="mdct ac3dsp"
1259 alac_encoder_select="lpc"
1260 amrnb_decoder_select="lsp"
1261 amrwb_decoder_select="lsp"
1262 atrac1_decoder_select="mdct sinewin"
1263 atrac3_decoder_select="mdct"
1264 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1265 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1266 cavs_decoder_select="golomb"
1267 cook_decoder_select="mdct sinewin"
1268 cscd_decoder_suggest="zlib"
1269 dca_decoder_select="mdct"
1270 dnxhd_encoder_select="aandct"
1271 dxa_decoder_select="zlib"
1272 eac3_decoder_select="ac3_decoder"
1273 eac3_encoder_select="mdct ac3dsp"
1274 eamad_decoder_select="aandct"
1275 eatgq_decoder_select="aandct"
1276 eatqi_decoder_select="aandct"
1277 ffv1_decoder_select="golomb"
1278 flac_decoder_select="golomb"
1279 flac_encoder_select="golomb lpc"
1280 flashsv_decoder_select="zlib"
1281 flashsv_encoder_select="zlib"
1282 flashsv2_encoder_select="zlib"
1283 flv_decoder_select="h263_decoder"
1284 flv_encoder_select="h263_encoder"
1285 fraps_decoder_select="huffman"
1286 h261_encoder_select="aandct"
1287 h263_decoder_select="h263_parser"
1288 h263_encoder_select="aandct"
1289 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1290 h263i_decoder_select="h263_decoder"
1291 h263p_encoder_select="h263_encoder"
1292 h264_decoder_select="golomb h264dsp h264pred"
1293 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1294 h264_dxva2_hwaccel_deps="dxva2api_h"
1295 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1296 h264_vaapi_hwaccel_select="vaapi"
1297 h264_vdpau_decoder_select="vdpau h264_decoder"
1298 imc_decoder_select="fft mdct sinewin"
1299 jpegls_decoder_select="golomb"
1300 jpegls_encoder_select="golomb"
1301 ljpeg_encoder_select="aandct"
1302 loco_decoder_select="golomb"
1303 mjpeg_encoder_select="aandct"
1304 mlp_decoder_select="mlp_parser"
1305 mp1_decoder_select="mpegaudiodsp"
1306 mp2_decoder_select="mpegaudiodsp"
1307 mp3adu_decoder_select="mpegaudiodsp"
1308 mp3_decoder_select="mpegaudiodsp"
1309 mp3on4_decoder_select="mpegaudiodsp"
1310 mp1float_decoder_select="mpegaudiodsp"
1311 mp2float_decoder_select="mpegaudiodsp"
1312 mp3adufloat_decoder_select="mpegaudiodsp"
1313 mp3float_decoder_select="mpegaudiodsp"
1314 mp3on4float_decoder_select="mpegaudiodsp"
1315 mpeg1video_encoder_select="aandct"
1316 mpeg2video_encoder_select="aandct"
1317 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1318 mpeg4_encoder_select="h263_encoder"
1319 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1320 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1321 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1322 mpeg2_crystalhd_decoder_select="crystalhd"
1323 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1324 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1325 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1326 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1327 mpeg4_crystalhd_decoder_select="crystalhd"
1328 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1329 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1330 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1331 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1332 msmpeg4_crystalhd_decoder_select="crystalhd"
1333 msmpeg4v1_decoder_select="h263_decoder"
1334 msmpeg4v1_encoder_select="h263_encoder"
1335 msmpeg4v2_decoder_select="h263_decoder"
1336 msmpeg4v2_encoder_select="h263_encoder"
1337 msmpeg4v3_decoder_select="h263_decoder"
1338 msmpeg4v3_encoder_select="h263_encoder"
1339 nellymoser_decoder_select="mdct sinewin"
1340 nellymoser_encoder_select="mdct sinewin"
1341 png_decoder_select="zlib"
1342 png_encoder_select="zlib"
1343 qcelp_decoder_select="lsp"
1344 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1345 ra_144_encoder_select="lpc"
1346 rv10_decoder_select="h263_decoder"
1347 rv10_encoder_select="h263_encoder"
1348 rv20_decoder_select="h263_decoder"
1349 rv20_encoder_select="h263_encoder"
1350 rv30_decoder_select="golomb h264pred"
1351 rv40_decoder_select="golomb h264pred"
1352 shorten_decoder_select="golomb"
1353 sipr_decoder_select="lsp"
1354 snow_decoder_select="dwt"
1355 snow_encoder_select="aandct dwt"
1356 sonic_decoder_select="golomb"
1357 sonic_encoder_select="golomb"
1358 sonic_ls_encoder_select="golomb"
1359 svq1_encoder_select="aandct"
1360 svq3_decoder_select="golomb h264dsp h264pred"
1361 svq3_decoder_suggest="zlib"
1362 theora_decoder_select="vp3_decoder"
1363 tiff_decoder_suggest="zlib"
1364 tiff_encoder_suggest="zlib"
1365 truehd_decoder_select="mlp_decoder"
1366 tscc_decoder_select="zlib"
1367 twinvq_decoder_select="mdct lsp sinewin"
1368 vc1_decoder_select="h263_decoder"
1369 vc1_crystalhd_decoder_select="crystalhd"
1370 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1371 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1372 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1373 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1374 vorbis_decoder_select="mdct"
1375 vorbis_encoder_select="mdct"
1376 vp6_decoder_select="huffman"
1377 vp6a_decoder_select="vp6_decoder"
1378 vp6f_decoder_select="vp6_decoder"
1379 vp8_decoder_select="h264pred"
1380 wmapro_decoder_select="mdct sinewin"
1381 wmav1_decoder_select="mdct sinewin"
1382 wmav1_encoder_select="mdct sinewin"
1383 wmav2_decoder_select="mdct sinewin"
1384 wmav2_encoder_select="mdct sinewin"
1385 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1386 wmv1_decoder_select="h263_decoder"
1387 wmv1_encoder_select="h263_encoder"
1388 wmv2_decoder_select="h263_decoder"
1389 wmv2_encoder_select="h263_encoder"
1390 wmv3_decoder_select="vc1_decoder"
1391 wmv3_crystalhd_decoder_select="crystalhd"
1392 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1393 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1394 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1395 zlib_decoder_select="zlib"
1396 zlib_encoder_select="zlib"
1397 zmbv_decoder_select="zlib"
1398 zmbv_encoder_select="zlib"
1399
1400 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1401 vaapi_deps="va_va_h"
1402 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1403
1404 # parsers
1405 h264_parser_select="golomb h264dsp h264pred"
1406
1407 # external libraries
1408 libcelt_decoder_deps="libcelt"
1409 libdirac_decoder_deps="libdirac !libschroedinger"
1410 libdirac_encoder_deps="libdirac"
1411 libfaac_encoder_deps="libfaac"
1412 libgsm_decoder_deps="libgsm"
1413 libgsm_encoder_deps="libgsm"
1414 libgsm_ms_decoder_deps="libgsm"
1415 libgsm_ms_encoder_deps="libgsm"
1416 libmp3lame_encoder_deps="libmp3lame"
1417 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1418 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1419 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1420 libopenjpeg_decoder_deps="libopenjpeg"
1421 libschroedinger_decoder_deps="libschroedinger"
1422 libschroedinger_encoder_deps="libschroedinger"
1423 libspeex_decoder_deps="libspeex"
1424 libtheora_encoder_deps="libtheora"
1425 libvo_aacenc_encoder_deps="libvo_aacenc"
1426 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1427 libvorbis_encoder_deps="libvorbis"
1428 libvpx_decoder_deps="libvpx"
1429 libvpx_encoder_deps="libvpx"
1430 libx264_encoder_deps="libx264"
1431 libxavs_encoder_deps="libxavs"
1432 libxvid_encoder_deps="libxvid"
1433
1434 # demuxers / muxers
1435 ac3_demuxer_select="ac3_parser"
1436 asf_stream_muxer_select="asf_muxer"
1437 avisynth_demuxer_deps="avisynth"
1438 dirac_demuxer_select="dirac_parser"
1439 eac3_demuxer_select="ac3_parser"
1440 flac_demuxer_select="flac_parser"
1441 ipod_muxer_select="mov_muxer"
1442 libnut_demuxer_deps="libnut"
1443 libnut_muxer_deps="libnut"
1444 matroska_audio_muxer_select="matroska_muxer"
1445 matroska_demuxer_suggest="zlib bzlib"
1446 mov_demuxer_suggest="zlib"
1447 mp3_demuxer_select="mpegaudio_parser"
1448 mp4_muxer_select="mov_muxer"
1449 mpegtsraw_demuxer_select="mpegts_demuxer"
1450 mxf_d10_muxer_select="mxf_muxer"
1451 ogg_demuxer_select="golomb"
1452 psp_muxer_select="mov_muxer"
1453 rtp_demuxer_select="sdp_demuxer"
1454 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1455 rtsp_demuxer_select="http_protocol rtpdec"
1456 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1457 sap_demuxer_select="sdp_demuxer"
1458 sap_muxer_select="rtp_muxer rtp_protocol"
1459 sdp_demuxer_select="rtpdec"
1460 spdif_muxer_select="aac_parser"
1461 tg2_muxer_select="mov_muxer"
1462 tgp_muxer_select="mov_muxer"
1463 w64_demuxer_deps="wav_demuxer"
1464
1465 # indevs / outdevs
1466 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1467 alsa_outdev_deps="alsa_asoundlib_h"
1468 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1469 dshow_indev_deps="IBaseFilter"
1470 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1471 dv1394_indev_deps="dv1394 dv_demuxer"
1472 fbdev_indev_deps="linux_fb_h"
1473 jack_indev_deps="jack_jack_h sem_timedwait"
1474 libdc1394_indev_deps="libdc1394"
1475 openal_indev_deps="openal"
1476 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1477 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1478 sdl_outdev_deps="sdl"
1479 sndio_indev_deps="sndio_h"
1480 sndio_outdev_deps="sndio_h"
1481 v4l_indev_deps="linux_videodev_h"
1482 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1483 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1484 vfwcap_indev_extralibs="-lavicap32"
1485 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1486 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1487
1488 # protocols
1489 gopher_protocol_deps="network"
1490 http_protocol_deps="network"
1491 http_protocol_select="tcp_protocol"
1492 mmsh_protocol_select="http_protocol"
1493 mmst_protocol_deps="network"
1494 rtmp_protocol_select="tcp_protocol"
1495 rtp_protocol_select="udp_protocol"
1496 tcp_protocol_deps="network"
1497 udp_protocol_deps="network"
1498
1499 # filters
1500 blackframe_filter_deps="gpl"
1501 boxblur_filter_deps="gpl"
1502 cropdetect_filter_deps="gpl"
1503 drawtext_filter_deps="libfreetype"
1504 frei0r_filter_deps="frei0r dlopen strtok_r"
1505 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1506 hqdn3d_filter_deps="gpl"
1507 movie_filter_deps="avcodec avformat"
1508 mp_filter_deps="gpl avcodec"
1509 negate_filter_deps="lut_filter"
1510 ocv_filter_deps="libopencv"
1511 scale_filter_deps="swscale"
1512 yadif_filter_deps="gpl"
1513
1514 # libraries
1515 avdevice_deps="avcodec avformat"
1516 avformat_deps="avcodec"
1517 postproc_deps="gpl"
1518
1519 # programs
1520 ffmpeg_deps="avcodec avformat swscale"
1521 ffmpeg_select="buffer_filter buffersink_filter"
1522 ffplay_deps="avcodec avformat swscale sdl"
1523 ffplay_select="buffersink_filter rdft"
1524 ffprobe_deps="avcodec avformat"
1525 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1526 ffserver_extralibs='$ldl'
1527
1528 doc_deps="texi2html"
1529
1530 # tests
1531
1532 test_deps(){
1533     suf1=$1
1534     suf2=$2
1535     shift 2
1536     for v; do
1537         dep=${v%=*}
1538         tests=${v#*=}
1539         for name in ${tests}; do
1540             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1541         done
1542     done
1543 }
1544
1545 test_deps _encoder _decoder                                             \
1546     adpcm_g726=g726                                                     \
1547     adpcm_ima_qt                                                        \
1548     adpcm_ima_wav                                                       \
1549     adpcm_ms                                                            \
1550     adpcm_swf                                                           \
1551     adpcm_yamaha=adpcm_yam                                              \
1552     alac                                                                \
1553     asv1                                                                \
1554     asv2                                                                \
1555     bmp                                                                 \
1556     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1557     dvvideo="dv dv50"                                                   \
1558     ffv1                                                                \
1559     flac                                                                \
1560     flashsv                                                             \
1561     flv                                                                 \
1562     gif                                                                 \
1563     h261                                                                \
1564     h263="h263 h263p"                                                   \
1565     huffyuv                                                             \
1566     jpegls                                                              \
1567     mjpeg="jpg mjpeg ljpeg"                                             \
1568     mp2                                                                 \
1569     mpeg1video="mpeg mpeg1b"                                            \
1570     mpeg2video="mpeg2 mpeg2thread"                                      \
1571     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1572     msmpeg4v3=msmpeg4                                                   \
1573     msmpeg4v2                                                           \
1574     pbm=pbmpipe                                                         \
1575     pcx                                                                 \
1576     pgm="pgm pgmpipe"                                                   \
1577     png                                                                 \
1578     ppm="ppm ppmpipe"                                                   \
1579     rawvideo="rgb yuv"                                                  \
1580     roq                                                                 \
1581     rv10                                                                \
1582     rv20                                                                \
1583     sgi                                                                 \
1584     snow="snow snowll"                                                  \
1585     svq1                                                                \
1586     targa=tga                                                           \
1587     tiff                                                                \
1588     wmav1                                                               \
1589     wmav2                                                               \
1590     wmv1                                                                \
1591     wmv2                                                                \
1592
1593 test_deps _muxer _demuxer                                               \
1594     aiff                                                                \
1595     pcm_alaw=alaw                                                       \
1596     asf                                                                 \
1597     au                                                                  \
1598     avi                                                                 \
1599     dv=dv_fmt                                                           \
1600     ffm                                                                 \
1601     flv=flv_fmt                                                         \
1602     gxf                                                                 \
1603     matroska=mkv                                                        \
1604     mmf                                                                 \
1605     mov                                                                 \
1606     pcm_mulaw=mulaw                                                     \
1607     mxf                                                                 \
1608     nut                                                                 \
1609     ogg                                                                 \
1610     rawvideo=pixfmt                                                     \
1611     rm                                                                  \
1612     swf                                                                 \
1613     mpegts=ts                                                           \
1614     voc                                                                 \
1615     wav                                                                 \
1616     yuv4mpegpipe=yuv4mpeg                                               \
1617
1618 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1619 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1620
1621 # default parameters
1622
1623 logfile="config.log"
1624
1625 # installation paths
1626 prefix_default="/usr/local"
1627 bindir_default='${prefix}/bin'
1628 datadir_default='${prefix}/share/ffmpeg'
1629 incdir_default='${prefix}/include'
1630 libdir_default='${prefix}/lib'
1631 mandir_default='${prefix}/share/man'
1632 shlibdir_default="$libdir_default"
1633
1634 # toolchain
1635 ar_default="ar"
1636 cc_default="gcc"
1637 cc_version=\"unknown\"
1638 host_cc_default="gcc"
1639 install="install"
1640 ln_s="ln -sf"
1641 nm_default="nm"
1642 objformat="elf"
1643 pkg_config_default=pkg-config
1644 ranlib="ranlib"
1645 strip_default="strip"
1646 yasmexe="yasm"
1647 nogas=":"
1648
1649 nm_opts='-g'
1650
1651 # machine
1652 arch_default=$(uname -m)
1653 cpu="generic"
1654
1655 # OS
1656 target_os_default=$(tolower $(uname -s))
1657 host_os=$target_os_default
1658
1659 # configurable options
1660 enable avcodec
1661 enable avdevice
1662 enable avfilter
1663 enable avformat
1664 enable avutil
1665 enable asm
1666 enable debug
1667 enable doc
1668 enable fastdiv
1669 enable ffmpeg
1670 enable ffplay
1671 enable ffprobe
1672 enable ffserver
1673 enable network
1674 enable optimizations
1675 enable postproc
1676 enable protocols
1677 enable static
1678 enable stripping
1679 enable swscale
1680 enable swscale_alpha
1681
1682 # build settings
1683 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1684 FFSERVERLDFLAGS=-Wl,-E
1685 LIBPREF="lib"
1686 LIBSUF=".a"
1687 FULLNAME='$(NAME)$(BUILDSUF)'
1688 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1689 SLIBPREF="lib"
1690 SLIBSUF=".so"
1691 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1692 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1693 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1694 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1695 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1696 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1697
1698 AS_O='-o $@'
1699 CC_O='-o $@'
1700
1701 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1702 host_libs='-lm'
1703
1704 target_path='$(CURDIR)'
1705
1706 # since the object filename is not given with the -MM flag, the compiler
1707 # is only able to print the basename, and we must add the path ourselves
1708 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1709 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1710
1711 # find source path
1712 if test -f configure; then
1713     source_path=.
1714 else
1715     source_path=$(cd $(dirname "$0"); pwd)
1716     echo "$source_path" | grep -q '[[:blank:]]' &&
1717         die "Out of tree builds are impossible with whitespace in source path."
1718     test -e "$source_path/config.h" &&
1719         die "Out of tree builds are impossible with config.h in source dir."
1720 fi
1721
1722 for v in "$@"; do
1723     r=${v#*=}
1724     l=${v%"$r"}
1725     r=$(sh_quote "$r")
1726     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1727 done
1728
1729 find_things(){
1730     thing=$1
1731     pattern=$2
1732     file=$source_path/$3
1733     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1734 }
1735
1736 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1737 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1738 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1739 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1740 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1741 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1742 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1743 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1744 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1745 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1746 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1747
1748 find_tests(){
1749     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1750 }
1751
1752 ACODEC_TESTS=$(find_tests acodec)
1753 VCODEC_TESTS=$(find_tests vsynth1)
1754 LAVF_TESTS=$(find_tests lavf)
1755 LAVFI_TESTS=$(find_tests lavfi)
1756 SEEK_TESTS=$(find_tests seek seek_)
1757
1758 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1759
1760 for n in $COMPONENT_LIST; do
1761     v=$(toupper ${n%s})_LIST
1762     eval enable \$$v
1763     eval ${n}_if_any="\$$v"
1764 done
1765
1766 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1767
1768 die_unknown(){
1769     echo "Unknown option \"$1\"."
1770     echo "See $0 --help for available options."
1771     exit 1
1772 }
1773
1774 show_list() {
1775     suffix=_$1
1776     shift
1777     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1778     exit 0
1779 }
1780
1781 for opt do
1782     optval="${opt#*=}"
1783     case "$opt" in
1784     --extra-ldflags=*) add_ldflags $optval
1785     ;;
1786     --extra-libs=*) add_extralibs $optval
1787     ;;
1788     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1789     ;;
1790     --enable-debug=*) debuglevel="$optval"
1791     ;;
1792     --disable-everything)
1793     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1794     ;;
1795     --enable-*=*|--disable-*=*)
1796     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1797     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1798     eval list=\$$(toupper $thing)_LIST
1799     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1800     $action $(filter "$name" $list)
1801     ;;
1802     --enable-?*|--disable-?*)
1803     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1804     if is_in $option $COMPONENT_LIST; then
1805         test $action = disable && action=unset
1806         eval $action \$$(toupper ${option%s})_LIST
1807     elif is_in $option $CMDLINE_SELECT; then
1808         $action $option
1809     else
1810         die_unknown $opt
1811     fi
1812     ;;
1813     --list-*)
1814         NAME="${opt#--list-}"
1815         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1816         NAME=${NAME%s}
1817         eval show_list $NAME \$$(toupper $NAME)_LIST
1818     ;;
1819     --help|-h) show_help
1820     ;;
1821     *)
1822     optname="${opt%%=*}"
1823     optname="${optname#--}"
1824     optname=$(echo "$optname" | sed 's/-/_/g')
1825     if is_in $optname $CMDLINE_SET; then
1826         eval $optname='$optval'
1827     elif is_in $optname $CMDLINE_APPEND; then
1828         append $optname "$optval"
1829     else
1830          die_unknown $opt
1831     fi
1832     ;;
1833     esac
1834 done
1835
1836 disabled logging && logfile=/dev/null
1837
1838 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1839 set >> $logfile
1840
1841 test -n "$cross_prefix" && enable cross_compile
1842
1843 if enabled cross_compile; then
1844     test -n "$arch" && test -n "$target_os" ||
1845         die "Must specify target arch and OS when cross-compiling"
1846 fi
1847
1848 set_default arch target_os
1849
1850 ar_default="${cross_prefix}${ar_default}"
1851 cc_default="${cross_prefix}${cc_default}"
1852 nm_default="${cross_prefix}${nm_default}"
1853 pkg_config_default="${cross_prefix}${pkg_config_default}"
1854 ranlib="${cross_prefix}${ranlib}"
1855 strip_default="${cross_prefix}${strip_default}"
1856
1857 sysinclude_default="${sysroot}/usr/include"
1858
1859 set_default cc nm pkg_config strip sysinclude
1860 enabled cross_compile || host_cc_default=$cc
1861 set_default host_cc
1862
1863 if ! $pkg_config --version >/dev/null 2>&1; then
1864     warn "$pkg_config not found, library detection may fail."
1865     pkg_config=false
1866 fi
1867
1868 exesuf() {
1869     case $1 in
1870         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1871     esac
1872 }
1873
1874 EXESUF=$(exesuf $target_os)
1875 HOSTEXESUF=$(exesuf $host_os)
1876
1877 # set temporary file name
1878 : ${TMPDIR:=$TEMPDIR}
1879 : ${TMPDIR:=$TMP}
1880 : ${TMPDIR:=/tmp}
1881
1882 if ! check_cmd mktemp -u XXXXXX; then
1883     # simple replacement for missing mktemp
1884     # NOT SAFE FOR GENERAL USE
1885     mktemp(){
1886         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1887     }
1888 fi
1889
1890 tmpfile(){
1891     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1892         (set -C; exec > $tmp) 2>/dev/null ||
1893         die "Unable to create temporary file in $TMPDIR."
1894     append TMPFILES $tmp
1895     eval $1=$tmp
1896 }
1897
1898 trap 'rm -f -- $TMPFILES' EXIT
1899
1900 tmpfile TMPC  .c
1901 tmpfile TMPE  $EXESUF
1902 tmpfile TMPH  .h
1903 tmpfile TMPO  .o
1904 tmpfile TMPS  .S
1905 tmpfile TMPV  .ver
1906 tmpfile TMPSH .sh
1907 tmpfile TMPASM .asm
1908
1909 unset -f mktemp
1910
1911 chmod +x $TMPE
1912
1913 # make sure we can execute files in $TMPDIR
1914 cat > $TMPSH 2>> $logfile <<EOF
1915 #! /bin/sh
1916 EOF
1917 chmod +x $TMPSH >> $logfile 2>&1
1918 if ! $TMPSH >> $logfile 2>&1; then
1919     cat <<EOF
1920 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1921 variable to another directory and make sure that it is not mounted noexec.
1922 EOF
1923     die "Sanity test failed."
1924 fi
1925
1926 filter_cflags=echo
1927 filter_cppflags=echo
1928 filter_asflags=echo
1929
1930 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1931     cc_type=llvm_gcc
1932     cc_version=__VERSION__
1933     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1934     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1935     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1936     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1937     speed_cflags='-O3'
1938     size_cflags='-Os'
1939 elif $cc -v 2>&1 | grep -qi ^gcc; then
1940     cc_type=gcc
1941     cc_version=__VERSION__
1942     gcc_version=$($cc --version | head -n1)
1943     gcc_basever=$($cc -dumpversion)
1944     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1945     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1946     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1947     if ! $cc -dumpversion | grep -q '^2\.'; then
1948         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1949         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1950     fi
1951     speed_cflags='-O3'
1952     size_cflags='-Os'
1953 elif $cc --version 2>/dev/null | grep -q Intel; then
1954     cc_type=icc
1955     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1956     cc_ident=$($cc --version | head -n1)
1957     icc_version=$($cc -dumpversion)
1958     CC_DEPFLAGS='-MMD'
1959     AS_DEPFLAGS='-MMD'
1960     speed_cflags='-O3'
1961     size_cflags='-Os'
1962     noopt_cflags='-O1'
1963 elif $cc -v 2>&1 | grep -q xlc; then
1964     cc_type=xlc
1965     cc_version="AV_STRINGIFY(__IBMC__)"
1966     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1967     speed_cflags='-O5'
1968     size_cflags='-O5 -qcompact'
1969 elif $cc -V 2>/dev/null | grep -q Compaq; then
1970     cc_type=ccc
1971     cc_version="AV_STRINGIFY(__DECC_VER)"
1972     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1973     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1974     debuglevel=3
1975     add_ldflags -Wl,-z,now # calls to libots crash without this
1976     speed_cflags='-fast'
1977     size_cflags='-O1'
1978 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1979     test -d "$sysroot" || die "No valid sysroot specified."
1980     cc_type=armcc
1981     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1982     cc_ident=$($cc --vsn | head -n1)
1983     armcc_conf="$PWD/armcc.conf"
1984     $cc --arm_linux_configure                 \
1985         --arm_linux_config_file="$armcc_conf" \
1986         --configure_sysroot="$sysroot"        \
1987         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1988         die "Error creating armcc configuration file."
1989     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1990     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1991     as_default="${cross_prefix}gcc"
1992     CC_DEPFLAGS='-MMD'
1993     AS_DEPFLAGS='-MMD'
1994     speed_cflags='-O3'
1995     size_cflags='-Os'
1996     filter_asflags="filter_out -W${armcc_opt}*"
1997 elif $cc -version 2>/dev/null | grep -q TMS470; then
1998     cc_type=tms470
1999     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2000     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2001     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2002     CC_O='-fr=$(@D)'
2003     as_default="${cross_prefix}gcc"
2004     ld_default="${cross_prefix}gcc"
2005     TMPO=$(basename $TMPC .c).o
2006     append TMPFILES $TMPO
2007     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2008     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2009     AS_DEPFLAGS='-MMD'
2010     speed_cflags='-O3 -mf=5'
2011     size_cflags='-O3 -mf=2'
2012     filter_cflags=tms470_flags
2013     tms470_flags(){
2014         for flag; do
2015             case $flag in
2016                 -march=*|-mcpu=*)
2017                     case "${flag#*=}" in
2018                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2019                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2020                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2021                         armv6*|arm11*)          echo -mv=6   ;;
2022                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2023                                                 echo -mv=5e  ;;
2024                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2025                     esac
2026                     ;;
2027                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2028                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2029                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2030                 -msoft-float)   echo --float_support=vfplib       ;;
2031                 -O[0-3]|-mf=*)  echo $flag                        ;;
2032                 -g)             echo -g -mn                       ;;
2033                 -pds=*)         echo $flag                        ;;
2034             esac
2035         done
2036     }
2037 elif $cc -v 2>&1 | grep -q clang; then
2038     cc_type=clang
2039     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2040         cc_version=__clang_version__ || cc_version=__VERSION__
2041     cc_ident=$($cc --version | head -n1)
2042     CC_DEPFLAGS='-MMD'
2043     AS_DEPFLAGS='-MMD'
2044     speed_cflags='-O3'
2045     size_cflags='-Os'
2046 elif $cc -V 2>&1 | grep -q Sun; then
2047     cc_type=suncc
2048     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2049     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2050     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2051     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2052     speed_cflags='-O5'
2053     size_cflags='-O5 -xspace'
2054     filter_cflags=suncc_flags
2055     suncc_flags(){
2056         for flag; do
2057             case $flag in
2058                 -march=*|-mcpu=*)
2059                     case "${flag#*=}" in
2060                         native)                   echo -xtarget=native       ;;
2061                         v9|niagara)               echo -xarch=sparc          ;;
2062                         ultrasparc)               echo -xarch=sparcvis       ;;
2063                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2064                         i586|pentium)             echo -xchip=pentium        ;;
2065                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2066                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2067                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2068                         pentium4*)          echo -xtarget=pentium4           ;;
2069                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2070                         *-sse3)             echo -xarch=sse3                 ;;
2071                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2072                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2073                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2074                         k8|opteron|athlon64|athlon-fx)
2075                                                   echo -xarch=sse2a          ;;
2076                         athlon*)                  echo -xarch=pentium_proa   ;;
2077                     esac
2078                     ;;
2079                 -std=c99)             echo -xc99              ;;
2080                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2081                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2082                 -W*,*)                echo $flag              ;;
2083                 -f*-*|-W*)                                    ;;
2084                 *)                    echo $flag              ;;
2085             esac
2086         done
2087     }
2088 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2089     cc_type=pathscale
2090     cc_version=__PATHSCALE__
2091     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2092     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2093     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2094     speed_cflags='-O2'
2095     size_cflags='-Os'
2096     filter_cflags='filter_out -Wdisabled-optimization'
2097 elif $cc -v 2>&1 | grep -q Open64; then
2098     cc_type=open64
2099     cc_version=__OPEN64__
2100     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2101     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2102     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2103     speed_cflags='-O2'
2104     size_cflags='-Os'
2105     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2106 fi
2107
2108 test -n "$cc_type" && enable $cc_type ||
2109     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2110
2111 : ${as_default:=$cc}
2112 : ${dep_cc_default:=$cc}
2113 : ${ld_default:=$cc}
2114 set_default ar as dep_cc ld
2115
2116 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2117 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2118
2119 add_cflags $extra_cflags
2120 add_asflags $extra_cflags
2121
2122 if test -n "$sysroot"; then
2123     case "$cc_type" in
2124         gcc|llvm_gcc|clang)
2125             add_cppflags --sysroot="$sysroot"
2126             add_ldflags --sysroot="$sysroot"
2127         ;;
2128         tms470)
2129             add_cppflags -I"$sysinclude"
2130             add_ldflags  --sysroot="$sysroot"
2131         ;;
2132     esac
2133 fi
2134
2135 if test "$cpu" = host; then
2136     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2137
2138     case "$cc_type" in
2139         gcc|llvm_gcc)
2140             check_native(){
2141                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2142                 sed -n "/cc1.*$1=/{
2143                             s/.*$1=\\([^ ]*\\).*/\\1/
2144                             p
2145                             q
2146                         }" $TMPE
2147             }
2148             cpu=$(check_native -march || check_native -mcpu)
2149         ;;
2150     esac
2151
2152     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2153 fi
2154
2155 # Deal with common $arch aliases
2156 case "$arch" in
2157     arm*)
2158         arch="arm"
2159     ;;
2160     mips|mipsel|IP*)
2161         arch="mips"
2162     ;;
2163     mips64*)
2164         arch="mips"
2165         subarch="mips64"
2166     ;;
2167     parisc|hppa)
2168         arch="parisc"
2169     ;;
2170     parisc64|hppa64)
2171         arch="parisc"
2172         subarch="parisc64"
2173     ;;
2174     "Power Macintosh"|ppc|powerpc)
2175         arch="ppc"
2176     ;;
2177     ppc64|powerpc64)
2178         arch="ppc"
2179         subarch="ppc64"
2180     ;;
2181     s390|s390x)
2182         arch="s390"
2183     ;;
2184     sh4|sh)
2185         arch="sh4"
2186     ;;
2187     sun4u|sparc64)
2188         arch="sparc"
2189         subarch="sparc64"
2190     ;;
2191     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2192         arch="x86"
2193     ;;
2194 esac
2195
2196 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2197 enable $arch
2198
2199 # Add processor-specific flags
2200 if test "$cpu" = generic; then
2201     : do nothing
2202 elif enabled ppc; then
2203
2204     case $(tolower $cpu) in
2205         601|ppc601|powerpc601)
2206             cpuflags="-mcpu=601"
2207             disable altivec
2208         ;;
2209         603*|ppc603*|powerpc603*)
2210             cpuflags="-mcpu=603"
2211             disable altivec
2212         ;;
2213         604*|ppc604*|powerpc604*)
2214             cpuflags="-mcpu=604"
2215             disable altivec
2216         ;;
2217         g3|75*|ppc75*|powerpc75*)
2218             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2219             disable altivec
2220         ;;
2221         g4|745*|ppc745*|powerpc745*)
2222             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2223         ;;
2224         74*|ppc74*|powerpc74*)
2225             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2226         ;;
2227         g5|970|ppc970|powerpc970|power4*)
2228             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2229         ;;
2230         cell)
2231             cpuflags="-mcpu=cell"
2232             enable ldbrx
2233         ;;
2234         e500v2)
2235             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2236             disable altivec
2237         ;;
2238         e500)
2239             cpuflags="-mcpu=8540 -mhard-float"
2240             disable altivec
2241         ;;
2242     esac
2243
2244 elif enabled x86; then
2245
2246     case $cpu in
2247         i[345]86|pentium)
2248             cpuflags="-march=$cpu"
2249             disable mmx
2250         ;;
2251         # targets that do NOT support conditional mov (cmov)
2252         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2253             cpuflags="-march=$cpu"
2254             disable cmov
2255         ;;
2256         # targets that do support conditional mov (cmov)
2257         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|amdfam10|barcelona|atom)
2258             cpuflags="-march=$cpu"
2259             enable cmov
2260             enable fast_cmov
2261         ;;
2262         # targets that do support conditional mov but on which it's slow
2263         pentium4|pentium4m|prescott|nocona)
2264             cpuflags="-march=$cpu"
2265             enable cmov
2266             disable fast_cmov
2267         ;;
2268     esac
2269
2270 elif enabled sparc; then
2271
2272     case $cpu in
2273         niagara)
2274             cpuflags="-mcpu=$cpu"
2275             disable vis
2276         ;;
2277         sparc64)
2278             cpuflags="-mcpu=v9"
2279         ;;
2280     esac
2281
2282 elif enabled arm; then
2283
2284     case $cpu in
2285         armv*)
2286             cpuflags="-march=$cpu"
2287             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2288         ;;
2289         *)
2290             cpuflags="-mcpu=$cpu"
2291             case $cpu in
2292                 cortex-a*)                               subarch=armv7a  ;;
2293                 cortex-r*)                               subarch=armv7r  ;;
2294                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2295                 arm11*)                                  subarch=armv6   ;;
2296                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2297                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2298             esac
2299         ;;
2300     esac
2301
2302 elif enabled alpha; then
2303
2304     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2305
2306 elif enabled bfin; then
2307
2308     cpuflags="-mcpu=$cpu"
2309
2310 elif enabled mips; then
2311
2312     cpuflags="-march=$cpu"
2313
2314 elif enabled avr32; then
2315
2316     case $cpu in
2317         ap7[02]0[0-2])
2318             subarch="avr32_ap"
2319             cpuflags="-mpart=$cpu"
2320         ;;
2321         ap)
2322             subarch="avr32_ap"
2323             cpuflags="-march=$cpu"
2324         ;;
2325         uc3[ab]*)
2326             subarch="avr32_uc"
2327             cpuflags="-mcpu=$cpu"
2328         ;;
2329         uc)
2330             subarch="avr32_uc"
2331             cpuflags="-march=$cpu"
2332         ;;
2333     esac
2334
2335 fi
2336
2337 add_cflags $cpuflags
2338 add_asflags $cpuflags
2339
2340 # compiler sanity check
2341 check_exec <<EOF
2342 int main(void){ return 0; }
2343 EOF
2344 if test "$?" != 0; then
2345     echo "$cc is unable to create an executable file."
2346     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2347         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2348         echo "Only do this if you know what cross compiling means."
2349     fi
2350     die "C compiler test failed."
2351 fi
2352
2353 add_cppflags -D_ISOC99_SOURCE
2354 check_cflags -std=c99
2355 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2356 #include <stdlib.h>
2357 EOF
2358 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2359 #include <stdlib.h>
2360 EOF
2361
2362 check_host_cflags -std=c99
2363 check_host_cflags -Wall
2364
2365 case "$arch" in
2366     alpha|ia64|mips|parisc|sparc)
2367         spic=$shared
2368     ;;
2369     x86)
2370         subarch="x86_32"
2371         check_cc <<EOF && subarch="x86_64"
2372         int test[(int)sizeof(char*) - 7];
2373 EOF
2374         if test "$subarch" = "x86_64"; then
2375             spic=$shared
2376         fi
2377     ;;
2378 esac
2379
2380 enable $subarch
2381 enabled spic && enable pic
2382
2383 # OS specific
2384 case $target_os in
2385     haiku)
2386         prefix_default="/boot/common"
2387         network_extralibs="-lnetwork"
2388         host_libs=
2389         ;;
2390     sunos)
2391         FFSERVERLDFLAGS=""
2392         SHFLAGS='-shared -Wl,-h,$$(@F)'
2393         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2394         network_extralibs="-lsocket -lnsl"
2395         add_cppflags -D__EXTENSIONS__
2396         nm_opts='-P -g'
2397         ;;
2398     netbsd)
2399         disable symver
2400         oss_indev_extralibs="-lossaudio"
2401         oss_outdev_extralibs="-lossaudio"
2402         ;;
2403     openbsd)
2404         enable malloc_aligned
2405         # On OpenBSD 4.5. the compiler does not use PIC unless
2406         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2407         # however the generated executable will not do anything
2408         # (simply quits with exit-code 1, no crash, no output).
2409         # Thus explicitly enable PIC here.
2410         enable pic
2411         disable symver
2412         SHFLAGS='-shared'
2413         oss_indev_extralibs="-lossaudio"
2414         oss_outdev_extralibs="-lossaudio"
2415         ;;
2416     dragonfly)
2417         enable malloc_aligned
2418         disable symver
2419         ;;
2420     freebsd)
2421         enable malloc_aligned
2422         ;;
2423     bsd/os)
2424         add_extralibs -lpoll -lgnugetopt
2425         strip="strip -d"
2426         ;;
2427     darwin)
2428         enable malloc_aligned
2429         gas="gas-preprocessor.pl $cc"
2430         enabled ppc && add_asflags -force_cpusubtype_ALL
2431         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2432         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2433         strip="${strip} -x"
2434         add_ldflags -Wl,-dynamic,-search_paths_first
2435         SLIBSUF=".dylib"
2436         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2437         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2438         FFSERVERLDFLAGS=-Wl,-bind_at_load
2439         objformat="macho"
2440         enabled x86_64 && objformat="macho64"
2441         enabled_any pic shared ||
2442             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2443         ;;
2444     mingw32*)
2445         if test $target_os = "mingw32ce"; then
2446             disable network
2447         else
2448             target_os=mingw32
2449         fi
2450         LIBTARGET=i386
2451         if enabled x86_64; then
2452             enable malloc_aligned
2453             LIBTARGET=x64
2454         elif enabled arm; then
2455             LIBTARGET=arm-wince
2456         fi
2457         shlibdir_default="$bindir_default"
2458         SLIBPREF=""
2459         SLIBSUF=".dll"
2460         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2461         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2462         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
2463         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2464         SLIB_INSTALL_LINKS=
2465         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2466         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2467         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'
2468         objformat="win32"
2469         enable dos_paths
2470         check_cflags -fno-common
2471         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2472                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2473                 die "ERROR: MinGW runtime version must be >= 3.15."
2474         add_cppflags -U__STRICT_ANSI__
2475         ;;
2476     cygwin*)
2477         target_os=cygwin
2478         shlibdir_default="$bindir_default"
2479         SLIBPREF="cyg"
2480         SLIBSUF=".dll"
2481         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2482         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2483         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2484         objformat="win32"
2485         enable dos_paths
2486         check_cflags -fno-common
2487         add_cppflags -U__STRICT_ANSI__
2488         ;;
2489     *-dos|freedos|opendos)
2490         network_extralibs="-lsocket"
2491         objformat="coff"
2492         enable dos_paths
2493         add_cppflags -U__STRICT_ANSI__
2494         ;;
2495     linux)
2496         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2497         enable dv1394
2498         ;;
2499     irix*)
2500         target_os=irix
2501         ranlib="echo ignoring ranlib"
2502         ;;
2503     os/2*)
2504         strip="lxlite -CS"
2505         ln_s="cp -f"
2506         objformat="aout"
2507         add_cppflags -D_GNU_SOURCE
2508         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2509         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2510         FFSERVERLDFLAGS=""
2511         LIBSUF="_s.a"
2512         SLIBPREF=""
2513         SLIBSUF=".dll"
2514         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2515         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2516         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2517           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2518           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2519           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2520           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2521           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2522         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2523           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2524         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
2525         enable dos_paths
2526         ;;
2527     gnu/kfreebsd)
2528         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2529         ;;
2530     gnu)
2531         ;;
2532     qnx)
2533         add_cppflags -D_QNX_SOURCE
2534         network_extralibs="-lsocket"
2535         ;;
2536     symbian)
2537         SLIBSUF=".dll"
2538         enable dos_paths
2539         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
2540         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
2541         add_ldflags -Wl,--target1-abs,--no-undefined \
2542                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
2543                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
2544         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
2545                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
2546                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
2547         ;;
2548     none)
2549         ;;
2550     *)
2551         die "Unknown OS '$target_os'."
2552         ;;
2553 esac
2554
2555 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$FFMPEG_CONFIGURATION" >config.fate
2556
2557 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2558
2559 set_default $PATHS_LIST
2560
2561 # we need to build at least one lib type
2562 if ! enabled_any static shared; then
2563     cat <<EOF
2564 At least one library type must be built.
2565 Specify --enable-static to build the static libraries or --enable-shared to
2566 build the shared libraries as well. To only build the shared libraries specify
2567 --disable-static in addition to --enable-shared.
2568 EOF
2569     exit 1;
2570 fi
2571
2572 die_license_disabled() {
2573     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2574 }
2575
2576 die_license_disabled gpl libx264
2577 die_license_disabled gpl libxavs
2578 die_license_disabled gpl libxvid
2579 die_license_disabled gpl x11grab
2580
2581 die_license_disabled nonfree libfaac
2582
2583 die_license_disabled version3 libopencore_amrnb
2584 die_license_disabled version3 libopencore_amrwb
2585 die_license_disabled version3 libvo_aacenc
2586 die_license_disabled version3 libvo_amrwbenc
2587
2588 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2589
2590 disabled optimizations || check_cflags -fomit-frame-pointer
2591
2592 enable_pic() {
2593     enable pic
2594     add_cppflags -DPIC
2595     add_cflags   -fPIC
2596     add_asflags  -fPIC
2597 }
2598
2599 enabled pic && enable_pic
2600
2601 check_cc <<EOF || die "Symbol mangling check failed."
2602 int ff_extern;
2603 EOF
2604 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2605 extern_prefix=${sym%%ff_extern*}
2606
2607 check_cc <<EOF && enable inline_asm
2608 void foo(void) { __asm__ volatile ("" ::); }
2609 EOF
2610
2611 _restrict=
2612 for restrict_keyword in restrict __restrict__ __restrict; do
2613     check_cc <<EOF && _restrict=$restrict_keyword && break
2614 void foo(char * $restrict_keyword p);
2615 EOF
2616 done
2617
2618 check_cc <<EOF && enable attribute_packed
2619 struct { int x; } __attribute__((packed)) x;
2620 EOF
2621
2622 check_cc <<EOF && enable attribute_may_alias
2623 union { int x; } __attribute__((may_alias)) x;
2624 EOF
2625
2626 check_cc <<EOF || die "endian test failed"
2627 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2628 EOF
2629 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2630
2631 if enabled alpha; then
2632
2633     check_cflags -mieee
2634
2635 elif enabled arm; then
2636
2637     enabled thumb && check_cflags -mthumb || check_cflags -marm
2638     nogas=die
2639
2640     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2641         enable vfp_args
2642     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2643         case "${cross_prefix:-$cc}" in
2644             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2645             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2646 __asm__ (".eabi_attribute 28, 1");
2647 int main(void) { return 0; }
2648 EOF
2649         esac
2650         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2651     fi
2652
2653     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2654     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2655     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2656     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2657     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2658     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2659     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2660
2661     enabled_all armv6t2 shared !pic && enable_pic
2662
2663 elif enabled mips; then
2664
2665     check_asm loongson '"dmult.g $1, $2, $3"'
2666     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2667
2668 elif enabled ppc; then
2669
2670     enable local_aligned_8 local_aligned_16
2671
2672     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2673     check_asm ibm_asm   '"add 0, 0, 0"'
2674     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2675     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2676
2677     # AltiVec flags: The FSF version of GCC differs from the Apple version
2678     if enabled altivec; then
2679         nogas=warn
2680         check_cflags -maltivec -mabi=altivec &&
2681         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2682         check_cflags -faltivec
2683
2684         # check if our compiler supports Motorola AltiVec C API
2685         check_cc <<EOF || disable altivec
2686 $inc_altivec_h
2687 int main(void) {
2688     vector signed int v1, v2, v3;
2689     v1 = vec_add(v2,v3);
2690     return 0;
2691 }
2692 EOF
2693
2694         # check if our compiler supports braces for vector declarations
2695         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2696 $inc_altivec_h
2697 int main (void) { (vector int) {1}; return 0; }
2698 EOF
2699     fi
2700
2701 elif enabled sparc; then
2702
2703     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2704         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2705
2706 elif enabled x86; then
2707
2708     enable local_aligned_8 local_aligned_16
2709
2710     # check whether EBP is available on x86
2711     # As 'i' is stored on the stack, this program will crash
2712     # if the base pointer is used to access it because the
2713     # base pointer is cleared in the inline assembly code.
2714     check_exec_crash <<EOF && enable ebp_available
2715     volatile int i=0;
2716     __asm__ volatile (
2717         "xorl %%ebp, %%ebp"
2718     ::: "%ebp");
2719     return i;
2720 EOF
2721
2722     # check whether EBX is available on x86
2723     check_asm ebx_available '""::"b"(0)' &&
2724         check_asm ebx_available '"":::"%ebx"'
2725
2726     # check whether xmm clobbers are supported
2727     check_asm xmm_clobbers '"":::"%xmm0"'
2728
2729     # check whether binutils is new enough to compile SSSE3/MMX2
2730     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2731     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2732
2733     check_asm bswap '"bswap %%eax" ::: "%eax"'
2734
2735     if ! disabled_any asm mmx yasm; then
2736         if check_cmd $yasmexe --version; then
2737             enabled x86_64 && yasm_extra="-m amd64"
2738             yasm_debug="-g dwarf2"
2739         elif check_cmd nasm -v; then
2740             yasmexe=nasm
2741             yasm_debug="-g -F dwarf"
2742             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2743         fi
2744
2745         YASMFLAGS="-f $objformat $yasm_extra"
2746         enabled pic               && append YASMFLAGS "-DPIC"
2747         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2748         case "$objformat" in
2749             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2750         esac
2751
2752         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2753             die "yasm not found, use --disable-yasm for a crippled build"
2754         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2755     fi
2756
2757     case "$cpu" in
2758         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2759             disable fast_clz
2760         ;;
2761     esac
2762
2763 fi
2764
2765 if enabled asm; then
2766     as=${gas:=$as}
2767     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2768         $nogas "GNU assembler not found, install gas-preprocessor"
2769 fi
2770
2771 check_ldflags -Wl,--as-needed
2772
2773 if check_func dlopen; then
2774     ldl=
2775 elif check_func dlopen -ldl; then
2776     ldl=-ldl
2777 fi
2778
2779 if enabled network; then
2780     check_type "sys/types.h sys/socket.h" socklen_t
2781     check_type netdb.h "struct addrinfo"
2782     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2783     check_type netinet/in.h "struct sockaddr_in6"
2784     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2785     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2786     # Prefer arpa/inet.h over winsock2
2787     if check_header arpa/inet.h ; then
2788         check_func closesocket
2789     elif check_header winsock2.h ; then
2790         check_func_headers winsock2.h closesocket -lws2 && \
2791             network_extralibs="-lws2" || \
2792         { check_func_headers winsock2.h closesocket -lws2_32 && \
2793             network_extralibs="-lws2_32"; }
2794         check_type ws2tcpip.h socklen_t
2795         check_type ws2tcpip.h "struct addrinfo"
2796         check_type ws2tcpip.h "struct ipv6_mreq"
2797         check_type ws2tcpip.h "struct sockaddr_in6"
2798         check_type ws2tcpip.h "struct sockaddr_storage"
2799         check_struct winsock2.h "struct sockaddr" sa_len
2800     else
2801         disable network
2802     fi
2803 fi
2804
2805 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2806 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2807
2808 check_func  fcntl
2809 check_func  fork
2810 check_func  getaddrinfo $network_extralibs
2811 check_func  gethrtime
2812 check_func  getrusage
2813 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2814 check_func  inet_aton $network_extralibs
2815 check_func  isatty
2816 check_func  localtime_r
2817 check_func  ${malloc_prefix}memalign            && enable memalign
2818 check_func  mkstemp
2819 check_func  mmap
2820 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2821 check_func  setrlimit
2822 check_func  strerror_r
2823 check_func  strptime
2824 check_func  strtok_r
2825 check_func_headers conio.h kbhit
2826 check_func_headers io.h setmode
2827 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2828 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2829 check_func_headers windows.h GetProcessTimes
2830 check_func_headers windows.h MapViewOfFile
2831 check_func_headers windows.h VirtualAlloc
2832
2833 check_header dlfcn.h
2834 check_header dxva2api.h
2835 check_header libcrystalhd/libcrystalhd_if.h
2836 check_header malloc.h
2837 check_header poll.h
2838 check_header sys/mman.h
2839 check_header sys/resource.h
2840 check_header sys/select.h
2841 check_header termios.h
2842 check_header vdpau/vdpau.h
2843 check_header vdpau/vdpau_x11.h
2844 check_header X11/extensions/XvMClib.h
2845
2846 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2847
2848 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2849 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2850
2851 # check for some common methods of building with pthread support
2852 # do this before the optional library checks as some of them require pthreads
2853 if ! disabled pthreads && ! enabled w32threads; then
2854     enable pthreads
2855     if check_func pthread_create; then
2856         :
2857     elif check_func pthread_create -pthread; then
2858         add_cflags -pthread
2859         add_extralibs -pthread
2860     elif check_func pthread_create -pthreads; then
2861         add_cflags -pthreads
2862         add_extralibs -pthreads
2863     elif check_func pthread_create -lpthreadGC2; then
2864         add_extralibs -lpthreadGC2
2865     elif ! check_lib pthread.h pthread_create -lpthread; then
2866         disable pthreads
2867     fi
2868 fi
2869
2870 for thread in $THREADS_LIST; do
2871     if enabled $thread; then
2872         test -n "$thread_type" &&
2873             die "ERROR: Only one thread type must be selected." ||
2874             thread_type="$thread"
2875     fi
2876 done
2877
2878 check_lib math.h sin -lm && LIBM="-lm"
2879 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
2880 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2881
2882 check_mathfunc exp2
2883 check_mathfunc exp2f
2884 check_mathfunc llrint
2885 check_mathfunc llrintf
2886 check_mathfunc log2
2887 check_mathfunc log2f
2888 check_mathfunc lrint
2889 check_mathfunc lrintf
2890 check_mathfunc round
2891 check_mathfunc roundf
2892 check_mathfunc trunc
2893 check_mathfunc truncf
2894
2895 # these are off by default, so fail if requested and not available
2896 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2897 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0
2898 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2899 enabled libdc1394  && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
2900 enabled libdirac   && require_pkg_config dirac                          \
2901     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2902     "dirac_decoder_init dirac_encoder_init"
2903 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2904 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2905 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2906 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2907 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2908 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2909 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2910 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
2911 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2912 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2913 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2914 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2915 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2916 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2917 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2918 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2919 enabled libvpx     && {
2920     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2921                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2922     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
2923                                 die "ERROR: libvpx encoder version must be >=0.9.6"; } }
2924 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2925                       { check_cpp_condition x264.h "X264_BUILD >= 115" ||
2926                         die "ERROR: libx264 version must be >= 0.115."; }
2927 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2928 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2929 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
2930                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
2931                         die "ERROR: openal not found"; } &&
2932                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
2933                         die "ERROR: openal version must be 1.1 or compatible"; }
2934 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2935
2936 SDL_CONFIG="${cross_prefix}sdl-config"
2937 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2938     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2939     enable sdl &&
2940     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2941 else
2942   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
2943     sdl_cflags=$("${SDL_CONFIG}" --cflags)
2944     sdl_libs=$("${SDL_CONFIG}" --libs)
2945     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
2946     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2947     enable sdl &&
2948     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2949   fi
2950 fi
2951 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
2952
2953 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2954
2955 check_header linux/fb.h
2956 check_header linux/videodev.h
2957 check_header linux/videodev2.h
2958 check_header sys/videoio.h
2959
2960 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2961 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2962 # w32api 3.12 had it defined wrong
2963 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2964
2965 check_type "dshow.h" IBaseFilter
2966
2967 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2968 { check_header dev/bktr/ioctl_meteor.h &&
2969   check_header dev/bktr/ioctl_bt848.h; } ||
2970 { check_header machine/ioctl_meteor.h &&
2971   check_header machine/ioctl_bt848.h; } ||
2972 { check_header dev/video/meteor/ioctl_meteor.h &&
2973   check_header dev/video/bktr/ioctl_bt848.h; } ||
2974 check_header dev/ic/bt8xx.h
2975
2976 check_header sndio.h
2977 if check_struct sys/soundcard.h audio_buf_info bytes; then
2978     enable_safe sys/soundcard.h
2979 else
2980     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
2981     #include <sys/soundcard.h>
2982     audio_buf_info abc;
2983 EOF
2984 fi
2985 check_header soundcard.h
2986
2987 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2988
2989 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait
2990
2991 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2992
2993 enabled x11grab                         &&
2994 check_header X11/Xlib.h                 &&
2995 check_header X11/extensions/XShm.h      &&
2996 check_header X11/extensions/Xfixes.h    &&
2997 check_func XOpenDisplay -lX11           &&
2998 check_func XShmCreateImage -lX11 -lXext &&
2999 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
3000
3001 if ! disabled vaapi; then
3002     check_lib va/va.h vaInitialize -lva && {
3003         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3004         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3005     } || disable vaapi
3006 fi
3007
3008 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3009 check_cpp_condition \
3010     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3011     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3012       disable vdpau; }
3013 fi
3014
3015 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3016
3017 # add some useful compiler flags if supported
3018 check_cflags -Wdeclaration-after-statement
3019 check_cflags -Wall
3020 check_cflags -Wno-parentheses
3021 check_cflags -Wno-switch
3022 check_cflags -Wno-format-zero-length
3023 check_cflags -Wdisabled-optimization
3024 check_cflags -Wpointer-arith
3025 check_cflags -Wredundant-decls
3026 check_cflags -Wno-pointer-sign
3027 check_cflags -Wcast-qual
3028 check_cflags -Wwrite-strings
3029 check_cflags -Wtype-limits
3030 check_cflags -Wundef
3031 check_cflags -Wmissing-prototypes
3032 check_cflags -Wno-pointer-to-int-cast
3033 enabled extra_warnings && check_cflags -Winline
3034
3035 # add some linker flags
3036 check_ldflags -Wl,--warn-common
3037 check_ldflags -Wl,-rpath-link=libpostproc:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil
3038 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3039
3040 echo "X{};" > $TMPV
3041 if test_ldflags -Wl,--version-script,$TMPV; then
3042     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3043     check_cc <<EOF && enable symver_asm_label
3044 void ff_foo(void) __asm__ ("av_foo@VERSION");
3045 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3046 EOF
3047     check_cc <<EOF && enable symver_gnu_asm
3048 __asm__(".symver ff_foo,av_foo@VERSION");
3049 void ff_foo(void) {}
3050 EOF
3051 fi
3052
3053 if [ -n "$optflags" ]; then
3054     add_cflags $optflags
3055 elif enabled small; then
3056     add_cflags $size_cflags
3057 elif enabled optimizations; then
3058     add_cflags $speed_cflags
3059 else
3060     add_cflags $noopt_cflags
3061 fi
3062 check_cflags -fno-math-errno
3063 check_cflags -fno-signed-zeros
3064
3065 if enabled icc; then
3066     # Just warnings, no remarks
3067     check_cflags -w1
3068     # -wd: Disable following warnings
3069     # 144, 167, 556: -Wno-pointer-sign
3070     # 1292: attribute "foo" ignored
3071     # 10006: ignoring unknown option -fno-signed-zeros
3072     # 10148: ignoring unknown option -Wno-parentheses
3073     # 10156: ignoring option '-W'; no argument required
3074     check_cflags -wd144,167,556,1292,10006,10148,10156
3075     # 11030: Warning unknown option --as-needed
3076     # 10156: ignoring option '-export'; no argument required
3077     check_ldflags -wd10156,11030
3078     # Allow to compile with optimizations
3079     check_ldflags -march=$cpu
3080     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3081     enable ebp_available
3082     if enabled x86_32; then
3083         test ${icc_version%%.*} -ge 11 && \
3084             check_cflags -falign-stack=maintain-16-byte || \
3085             disable aligned_stack
3086     fi
3087 elif enabled ccc; then
3088     # disable some annoying warnings
3089     add_cflags -msg_disable cvtu32to64
3090     add_cflags -msg_disable embedcomment
3091     add_cflags -msg_disable needconstext
3092     add_cflags -msg_disable nomainieee
3093     add_cflags -msg_disable ptrmismatch1
3094     add_cflags -msg_disable unreachcode
3095 elif enabled gcc; then
3096     check_cflags -fno-tree-vectorize
3097     check_cflags -Werror=implicit-function-declaration
3098     check_cflags -Werror=missing-prototypes
3099 elif enabled llvm_gcc; then
3100     check_cflags -mllvm -stack-alignment=16
3101 elif enabled clang; then
3102     check_cflags -mllvm -stack-alignment=16
3103     check_cflags -Qunused-arguments
3104 elif enabled armcc; then
3105     # 2523: use of inline assembler is deprecated
3106     add_cflags -W${armcc_opt},--diag_suppress=2523
3107     add_cflags -W${armcc_opt},--diag_suppress=1207
3108     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3109     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3110     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3111     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3112 elif enabled tms470; then
3113     add_cflags -pds=824 -pds=837
3114 elif enabled pathscale; then
3115     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3116 fi
3117
3118 enabled_any $THREADS_LIST      && enable threads
3119
3120 check_deps $CONFIG_LIST       \
3121            $CONFIG_EXTRA      \
3122            $HAVE_LIST         \
3123            $DECODER_LIST      \
3124            $ENCODER_LIST      \
3125            $HWACCEL_LIST      \
3126            $PARSER_LIST       \
3127            $BSF_LIST          \
3128            $DEMUXER_LIST      \
3129            $MUXER_LIST        \
3130            $FILTER_LIST       \
3131            $INDEV_LIST        \
3132            $OUTDEV_LIST       \
3133            $PROTOCOL_LIST     \
3134            $ACODEC_TESTS      \
3135            $VCODEC_TESTS      \
3136            $LAVF_TESTS        \
3137            $LAVFI_TESTS       \
3138            $SEEK_TESTS        \
3139
3140 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3141
3142 if test $target_os == "haiku"; then
3143     disable memalign
3144     disable posix_memalign
3145 fi
3146
3147 ! enabled_any memalign posix_memalign malloc_aligned &&
3148     enabled_any $need_memalign && enable memalign_hack
3149
3150 echo "install prefix            $prefix"
3151 echo "source path               $source_path"
3152 echo "C compiler                $cc"
3153 echo "ARCH                      $arch ($cpu)"
3154 if test "$build_suffix" != ""; then
3155     echo "build suffix              $build_suffix"
3156 fi
3157 if test "$extra_version" != ""; then
3158     echo "version string suffix     $extra_version"
3159 fi
3160 echo "big-endian                ${bigendian-no}"
3161 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3162 if enabled x86; then
3163     echo "${yasmexe}                      ${yasm-no}"
3164     echo "MMX enabled               ${mmx-no}"
3165     echo "MMX2 enabled              ${mmx2-no}"
3166     echo "3DNow! enabled            ${amd3dnow-no}"
3167     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3168     echo "SSE enabled               ${sse-no}"
3169     echo "SSSE3 enabled             ${ssse3-no}"
3170     echo "AVX enabled               ${avx-no}"
3171     echo "CMOV enabled              ${cmov-no}"
3172     echo "CMOV is fast              ${fast_cmov-no}"
3173     echo "EBX available             ${ebx_available-no}"
3174     echo "EBP available             ${ebp_available-no}"
3175 fi
3176 if enabled arm; then
3177     echo "ARMv5TE enabled           ${armv5te-no}"
3178     echo "ARMv6 enabled             ${armv6-no}"
3179     echo "ARMv6T2 enabled           ${armv6t2-no}"
3180     echo "ARM VFP enabled           ${armvfp-no}"
3181     echo "IWMMXT enabled            ${iwmmxt-no}"
3182     echo "NEON enabled              ${neon-no}"
3183 fi
3184 if enabled mips; then
3185     echo "MMI enabled               ${mmi-no}"
3186 fi
3187 if enabled ppc; then
3188     echo "AltiVec enabled           ${altivec-no}"
3189     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3190     echo "dcbzl available           ${dcbzl-no}"
3191 fi
3192 if enabled sparc; then
3193     echo "VIS enabled               ${vis-no}"
3194 fi
3195 echo "debug symbols             ${debug-no}"
3196 echo "strip symbols             ${stripping-no}"
3197 echo "optimize for size         ${small-no}"
3198 echo "optimizations             ${optimizations-no}"
3199 echo "static                    ${static-no}"
3200 echo "shared                    ${shared-no}"
3201 echo "postprocessing support    ${postproc-no}"
3202 echo "new filter support        ${avfilter-no}"
3203 echo "network support           ${network-no}"
3204 echo "threading support         ${thread_type-no}"
3205 echo "SDL support               ${sdl-no}"
3206 echo "Sun medialib support      ${mlib-no}"
3207 echo "libdxva2 enabled          ${dxva2-no}"
3208 echo "libva enabled             ${vaapi-no}"
3209 echo "libvdpau enabled          ${vdpau-no}"
3210 echo "AVISynth enabled          ${avisynth-no}"
3211 echo "libcelt enabled           ${libcelt-no}"
3212 echo "frei0r enabled            ${frei0r-no}"
3213 echo "libdc1394 support         ${libdc1394-no}"
3214 echo "libdirac enabled          ${libdirac-no}"
3215 echo "libfaac enabled           ${libfaac-no}"
3216 echo "libgsm enabled            ${libgsm-no}"
3217 echo "libmp3lame enabled        ${libmp3lame-no}"
3218 echo "libnut enabled            ${libnut-no}"
3219 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3220 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3221 echo "libopencv support         ${libopencv-no}"
3222 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3223 echo "librtmp enabled           ${librtmp-no}"
3224 echo "libschroedinger enabled   ${libschroedinger-no}"
3225 echo "libspeex enabled          ${libspeex-no}"
3226 echo "libtheora enabled         ${libtheora-no}"
3227 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3228 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3229 echo "libvorbis enabled         ${libvorbis-no}"
3230 echo "libvpx enabled            ${libvpx-no}"
3231 echo "libx264 enabled           ${libx264-no}"
3232 echo "libxavs enabled           ${libxavs-no}"
3233 echo "libxvid enabled           ${libxvid-no}"
3234 echo "openal enabled            ${openal-no}"
3235 echo "zlib enabled              ${zlib-no}"
3236 echo "bzlib enabled             ${bzlib-no}"
3237 echo
3238
3239 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3240     echo "Enabled ${type}s:"
3241     eval list=\$$(toupper $type)_LIST
3242     print_enabled '_*' $list | sort | pr -r -3 -t
3243     echo
3244 done
3245
3246 license="LGPL version 2.1 or later"
3247 if enabled nonfree; then
3248     license="nonfree and unredistributable"
3249 elif enabled gplv3; then
3250     license="GPL version 3 or later"
3251 elif enabled lgplv3; then
3252     license="LGPL version 3 or later"
3253 elif enabled gpl; then
3254     license="GPL version 2 or later"
3255 fi
3256
3257 echo "License: $license"
3258
3259 echo "Creating config.mak and config.h..."
3260
3261 test -e Makefile || $ln_s "$source_path/Makefile" .
3262
3263 enabled stripping || strip="echo skipping strip"
3264
3265 config_files="$TMPH config.mak"
3266
3267 cat > config.mak <<EOF
3268 # Automatically generated by configure - do not modify!
3269 ifndef FFMPEG_CONFIG_MAK
3270 FFMPEG_CONFIG_MAK=1
3271 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
3272 prefix=$prefix
3273 LIBDIR=\$(DESTDIR)$libdir
3274 SHLIBDIR=\$(DESTDIR)$shlibdir
3275 INCDIR=\$(DESTDIR)$incdir
3276 BINDIR=\$(DESTDIR)$bindir
3277 DATADIR=\$(DESTDIR)$datadir
3278 MANDIR=\$(DESTDIR)$mandir
3279 SRC_PATH=$source_path
3280 ifndef MAIN_MAKEFILE
3281 SRC_PATH:=\$(SRC_PATH:.%=..%)
3282 endif
3283 CC_IDENT=$cc_ident
3284 ARCH=$arch
3285 CC=$cc
3286 AS=$as
3287 LD=$ld
3288 DEPCC=$dep_cc
3289 YASM=$yasmexe
3290 YASMDEP=$yasmexe
3291 AR=$ar
3292 RANLIB=$ranlib
3293 CP=cp -p
3294 LN_S=$ln_s
3295 STRIP=$strip
3296 CPPFLAGS=$CPPFLAGS
3297 CFLAGS=$CFLAGS
3298 ASFLAGS=$ASFLAGS
3299 AS_O=$CC_O
3300 CC_O=$CC_O
3301 LDFLAGS=$LDFLAGS
3302 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3303 SHFLAGS=$SHFLAGS
3304 YASMFLAGS=$YASMFLAGS
3305 BUILDSUF=$build_suffix
3306 FULLNAME=$FULLNAME
3307 LIBPREF=$LIBPREF
3308 LIBSUF=$LIBSUF
3309 LIBNAME=$LIBNAME
3310 SLIBPREF=$SLIBPREF
3311 SLIBSUF=$SLIBSUF
3312 EXESUF=$EXESUF
3313 EXTRA_VERSION=$extra_version
3314 DEPFLAGS=$DEPFLAGS
3315 CCDEP=$CCDEP
3316 ASDEP=$ASDEP
3317 CC_DEPFLAGS=$CC_DEPFLAGS
3318 AS_DEPFLAGS=$AS_DEPFLAGS
3319 HOSTCC=$host_cc
3320 HOSTCFLAGS=$host_cflags
3321 HOSTEXESUF=$HOSTEXESUF
3322 HOSTLDFLAGS=$host_ldflags
3323 HOSTLIBS=$host_libs
3324 TARGET_EXEC=$target_exec
3325 TARGET_PATH=$target_path
3326 SDL_LIBS=$sdl_libs
3327 SDL_CFLAGS=$sdl_cflags
3328 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3329 EXTRALIBS=$extralibs
3330 INSTALL=$install
3331 LIBTARGET=${LIBTARGET}
3332 SLIBNAME=${SLIBNAME}
3333 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3334 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3335 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3336 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3337 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
3338 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
3339 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
3340 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
3341 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3342 EOF
3343
3344 get_version(){
3345     name=$1
3346     file=$source_path/$2
3347     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3348     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3349     lcname=$(tolower $name)
3350     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3351     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3352 }
3353
3354 get_version LIBSWSCALE  libswscale/swscale.h
3355 get_version LIBPOSTPROC libpostproc/postprocess.h
3356 get_version LIBAVCODEC  libavcodec/version.h
3357 get_version LIBAVDEVICE libavdevice/avdevice.h
3358 get_version LIBAVFORMAT libavformat/version.h
3359 get_version LIBAVUTIL   libavutil/avutil.h
3360 get_version LIBAVFILTER libavfilter/avfilter.h
3361
3362 cat > $TMPH <<EOF
3363 /* Automatically generated by configure - do not modify! */
3364 #ifndef FFMPEG_CONFIG_H
3365 #define FFMPEG_CONFIG_H
3366 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3367 #define FFMPEG_LICENSE "$(c_escape $license)"
3368 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3369 #define CC_TYPE "$cc_type"
3370 #define CC_VERSION $cc_version
3371 #define restrict $_restrict
3372 #define EXTERN_PREFIX "${extern_prefix}"
3373 #define EXTERN_ASM ${extern_prefix}
3374 #define SLIBSUF "$SLIBSUF"
3375 EOF
3376
3377 test -n "$malloc_prefix" &&
3378     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3379
3380 if enabled small || disabled optimizations; then
3381     echo "#undef  av_always_inline"  >> $TMPH
3382     if enabled small; then
3383         echo "#define av_always_inline inline"  >> $TMPH
3384     else
3385         echo "#define av_always_inline av_unused"  >> $TMPH
3386     fi
3387 fi
3388
3389 if enabled yasm; then
3390     append config_files $TMPASM
3391     printf '' >$TMPASM
3392 fi
3393
3394 print_config ARCH_   "$config_files" $ARCH_LIST
3395 print_config HAVE_   "$config_files" $HAVE_LIST
3396 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3397                                      $CONFIG_EXTRA      \
3398                                      $DECODER_LIST      \
3399                                      $ENCODER_LIST      \
3400                                      $HWACCEL_LIST      \
3401                                      $PARSER_LIST       \
3402                                      $BSF_LIST          \
3403                                      $DEMUXER_LIST      \
3404                                      $MUXER_LIST        \
3405                                      $FILTER_LIST       \
3406                                      $PROTOCOL_LIST     \
3407                                      $INDEV_LIST        \
3408                                      $OUTDEV_LIST       \
3409
3410 cat >>config.mak <<EOF
3411 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3412 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3413 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3414 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3415 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3416 EOF
3417
3418 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3419 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3420
3421 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3422 cp_if_changed $TMPH config.h
3423 touch .config
3424
3425 enabled yasm && cp_if_changed $TMPASM config.asm
3426
3427 cat > $TMPH <<EOF
3428 /* Generated by ffconf */
3429 #ifndef AVUTIL_AVCONFIG_H
3430 #define AVUTIL_AVCONFIG_H
3431 EOF
3432
3433 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3434
3435 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3436
3437 cp_if_changed $TMPH libavutil/avconfig.h
3438
3439 test -n "$WARNINGS" && printf "\n$WARNINGS"
3440
3441 # build pkg-config files
3442
3443 pkgconfig_generate(){
3444 name=$1
3445 shortname=${name#lib}${build_suffix}
3446 comment=$2
3447 version=$3
3448 libs=$4
3449 requires=$5
3450 enabled ${name#lib} || return 0
3451 mkdir -p $name
3452 cat <<EOF > $name/$name.pc
3453 prefix=$prefix
3454 exec_prefix=\${prefix}
3455 libdir=$libdir
3456 includedir=$incdir
3457
3458 Name: $name
3459 Description: $comment
3460 Version: $version
3461 Requires: $(enabled shared || echo $requires)
3462 Requires.private: $(enabled shared && echo $requires)
3463 Conflicts:
3464 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3465 Libs.private: $(enabled shared && echo $libs)
3466 Cflags: -I\${includedir}
3467 EOF
3468 cat <<EOF > $name/$name-uninstalled.pc
3469 prefix=
3470 exec_prefix=
3471 libdir=\${pcfiledir}
3472 includedir=${source_path}
3473
3474 Name: $name
3475 Description: $comment
3476 Version: $version
3477 Requires: $requires
3478 Conflicts:
3479 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3480 Cflags: -I\${includedir}
3481 EOF
3482 }
3483
3484 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3485 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3486 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3487 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3488 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3489 pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3490 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"