configure

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --libdir=DIR             install libs in DIR [PREFIX/lib]
  85   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  86   --incdir=DIR             install includes in DIR [PREFIX/include]
  87   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  88
  89 Licensing options:
  90   --enable-gpl             allow use of GPL code, the resulting libs
  91                            and binaries will be under GPL [no]
  92   --enable-version3        upgrade (L)GPL to version 3 [no]
  93   --enable-nonfree         allow use of nonfree code, the resulting libs
  94                            and binaries will be unredistributable [no]
  95
  96 Configuration options:
  97   --disable-static         do not build static libraries [no]
  98   --enable-shared          build shared libraries [no]
  99   --enable-small           optimize for size instead of speed
 100   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 101   --enable-gray            enable full grayscale support (slower color)
 102   --disable-swscale-alpha  disable alpha channel support in swscale
 103   --disable-all            disable building components, libraries and programs
 104
 105 Program options:
 106   --disable-programs       do not build command line programs
 107   --disable-avconv         disable avconv build
 108   --disable-avplay         disable avplay build
 109   --disable-avprobe        disable avprobe build
 110   --disable-avserver       disable avserver build
 111
 112 Component options:
 113   --disable-doc            do not build documentation
 114   --disable-avdevice       disable libavdevice build
 115   --disable-avcodec        disable libavcodec build
 116   --disable-avformat       disable libavformat build
 117   --disable-avutil         disable libavutil build
 118   --disable-swscale        disable libswscale build
 119   --disable-avfilter       disable video filter support [no]
 120   --disable-avresample     disable libavresample build [no]
 121   --disable-pthreads       disable pthreads [auto]
 122   --disable-w32threads     disable Win32 threads [auto]
 123   --disable-network        disable network support [no]
 124   --disable-dct            disable DCT code
 125   --disable-error-resilience disable error resilience code
 126   --disable-lsp            disable LSP code
 127   --disable-lzo            disable LZO decoder code
 128   --disable-mdct           disable MDCT code
 129   --disable-rdft           disable RDFT code
 130   --disable-fft            disable FFT code
 131
 132 Hardware accelerators:
 133   --enable-dxva2           enable DXVA2 code
 134   --enable-vaapi           enable VAAPI code
 135   --enable-vda             enable VDA code
 136   --enable-vdpau           enable VDPAU code
 137
 138 Individual component options:
 139   --disable-everything     disable all components listed below
 140   --disable-encoder=NAME   disable encoder NAME
 141   --enable-encoder=NAME    enable encoder NAME
 142   --disable-encoders       disable all encoders
 143   --disable-decoder=NAME   disable decoder NAME
 144   --enable-decoder=NAME    enable decoder NAME
 145   --disable-decoders       disable all decoders
 146   --disable-hwaccel=NAME   disable hwaccel NAME
 147   --enable-hwaccel=NAME    enable hwaccel NAME
 148   --disable-hwaccels       disable all hwaccels
 149   --disable-muxer=NAME     disable muxer NAME
 150   --enable-muxer=NAME      enable muxer NAME
 151   --disable-muxers         disable all muxers
 152   --disable-demuxer=NAME   disable demuxer NAME
 153   --enable-demuxer=NAME    enable demuxer NAME
 154   --disable-demuxers       disable all demuxers
 155   --enable-parser=NAME     enable parser NAME
 156   --disable-parser=NAME    disable parser NAME
 157   --disable-parsers        disable all parsers
 158   --enable-bsf=NAME        enable bitstream filter NAME
 159   --disable-bsf=NAME       disable bitstream filter NAME
 160   --disable-bsfs           disable all bitstream filters
 161   --enable-protocol=NAME   enable protocol NAME
 162   --disable-protocol=NAME  disable protocol NAME
 163   --disable-protocols      disable all protocols
 164   --enable-indev=NAME      enable input device NAME
 165   --disable-indev=NAME     disable input device NAME
 166   --disable-indevs         disable input devices
 167   --enable-outdev=NAME     enable output device NAME
 168   --disable-outdev=NAME    disable output device NAME
 169   --disable-outdevs        disable output devices
 170   --disable-devices        disable all devices
 171   --enable-filter=NAME     enable filter NAME
 172   --disable-filter=NAME    disable filter NAME
 173   --disable-filters        disable all filters
 174
 175 External library support:
 176   --enable-avisynth        enable reading of AviSynth script files [no]
 177   --enable-bzlib           enable bzlib [autodetect]
 178   --enable-frei0r          enable frei0r video filtering
 179   --enable-gnutls          enable gnutls [no]
 180   --enable-libcdio         enable audio CD grabbing with libcdio
 181   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 182                            and libraw1394 [no]
 183   --enable-libfaac         enable AAC encoding via libfaac [no]
 184   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 185   --enable-libfreetype     enable libfreetype [no]
 186   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 187   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 188   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 189   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 190   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 191   --enable-libopencv       enable video filtering via libopencv [no]
 192   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 193   --enable-libopus         enable Opus decoding via libopus [no]
 194   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 195   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 196   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 197   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 198   --enable-libtheora       enable Theora encoding via libtheora [no]
 199   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 200   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 201   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 202   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 203   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 204   --enable-libx264         enable H.264 encoding via x264 [no]
 205   --enable-libxavs         enable AVS encoding via xavs [no]
 206   --enable-libxvid         enable Xvid encoding via xvidcore,
 207                            native MPEG-4/Xvid encoder exists [no]
 208   --enable-openssl         enable openssl [no]
 209   --enable-x11grab         enable X11 grabbing [no]
 210   --enable-zlib            enable zlib [autodetect]
 211
 212 Advanced options (experts only):
 213   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 214   --enable-cross-compile   assume a cross-compiler is used
 215   --sysroot=PATH           root of cross-build tree
 216   --sysinclude=PATH        location of cross-build system headers
 217   --target-os=OS           compiler targets OS [$target_os]
 218   --target-exec=CMD        command to run executables on target
 219   --target-path=DIR        path to view of build directory on target
 220   --target-samples=DIR     path to samples directory on target
 221   --toolchain=NAME         set tool defaults according to NAME
 222   --nm=NM                  use nm tool
 223   --ar=AR                  use archive tool AR [$ar_default]
 224   --as=AS                  use assembler AS [$as_default]
 225   --cc=CC                  use C compiler CC [$cc_default]
 226   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 227   --ld=LD                  use linker LD
 228   --host-cc=HOSTCC         use host C compiler HOSTCC
 229   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 230   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 231   --host-ld=HOSTLD         use host linker HOSTLD
 232   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 233   --host-libs=HLIBS        use libs HLIBS when linking for host
 234   --host-os=OS             compiler host OS [$target_os]
 235   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 236   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 237   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 238   --extra-version=STRING   version string suffix []
 239   --optflags=OPTFLAGS      override optimization-related compiler flags
 240   --build-suffix=SUFFIX    library name suffix []
 241   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 242   --arch=ARCH              select architecture [$arch]
 243   --cpu=CPU                select the minimum required CPU (affects
 244                            instruction selection, may crash on older CPUs)
 245   --enable-pic             build position-independent code
 246   --enable-sram            allow use of on-chip SRAM
 247   --enable-thumb           compile for Thumb instruction set
 248   --disable-symver         disable symbol versioning
 249   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 250   --disable-safe-bitstream-reader
 251                            disable buffer boundary checking in bitreaders
 252                            (faster, but may crash)
 253   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 254   --enable-lto             use link-time optimization
 255
 256 Optimization options (experts only):
 257   --disable-asm            disable all assembler optimizations
 258   --disable-altivec        disable AltiVec optimizations
 259   --disable-amd3dnow       disable 3DNow! optimizations
 260   --disable-amd3dnowext    disable 3DNow! extended optimizations
 261   --disable-mmx            disable MMX optimizations
 262   --disable-mmxext         disable MMXEXT optimizations
 263   --disable-sse            disable SSE optimizations
 264   --disable-sse2           disable SSE2 optimizations
 265   --disable-sse3           disable SSE3 optimizations
 266   --disable-ssse3          disable SSSE3 optimizations
 267   --disable-sse4           disable SSE4 optimizations
 268   --disable-sse42          disable SSE4.2 optimizations
 269   --disable-avx            disable AVX optimizations
 270   --disable-fma4           disable FMA4 optimizations
 271   --disable-armv5te        disable armv5te optimizations
 272   --disable-armv6          disable armv6 optimizations
 273   --disable-armv6t2        disable armv6t2 optimizations
 274   --disable-vfp            disable VFP optimizations
 275   --disable-neon           disable NEON optimizations
 276   --disable-vis            disable VIS optimizations
 277   --disable-inline-asm     disable use of inline assembler
 278   --disable-yasm           disable use of yasm assembler
 279
 280 Developer options (useful when working on Libav itself):
 281   --disable-debug          disable debugging symbols
 282   --enable-debug=LEVEL     set the debug level [$debuglevel]
 283   --disable-optimizations  disable compiler optimizations
 284   --enable-extra-warnings  enable more compiler warnings
 285   --samples=PATH           location of test samples for FATE, if not set use
 286                            \$LIBAV_SAMPLES at make invocation time.
 287   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 288                            should be used only for debugging purposes)
 289   --enable-random          randomly enable/disable components
 290   --disable-random
 291   --enable-random=LIST     randomly enable/disable specific components or
 292   --disable-random=LIST    component groups. LIST is a comma-separated list
 293                            of NAME[:PROB] entries where NAME is a component
 294                            (group) and PROB the probability associated with
 295                            NAME (default 0.5).
 296   --random-seed=VALUE      seed value for --enable/disable-random
 297
 298 NOTE: Object files are built at the place where configure is launched.
 299 EOF
 300   exit 0
 301 }
 302
 303 quotes='""'
 304
 305 log(){
 306     echo "$@" >> $logfile
 307 }
 308
 309 log_file(){
 310     log BEGIN $1
 311     pr -n -t $1 >> $logfile
 312     log END $1
 313 }
 314
 315 echolog(){
 316     log "$@"
 317     echo "$@"
 318 }
 319
 320 warn(){
 321     log "WARNING: $*"
 322     WARNINGS="${WARNINGS}WARNING: $*\n"
 323 }
 324
 325 die(){
 326     echolog "$@"
 327     cat <<EOF
 328
 329 If you think configure made a mistake, make sure you are using the latest
 330 version from Git.  If the latest version fails, report the problem to the
 331 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
 332 EOF
 333     if disabled logging; then
 334         cat <<EOF
 335 Rerun configure with logging enabled (do not use --disable-logging), and
 336 include the log this produces with your report.
 337 EOF
 338     else
 339         cat <<EOF
 340 Include the log file "$logfile" produced by configure as this will help
 341 solving the problem.
 342 EOF
 343     fi
 344     exit 1
 345 }
 346
 347 # Avoid locale weirdness, besides we really just want to translate ASCII.
 348 toupper(){
 349     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 350 }
 351
 352 tolower(){
 353     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 354 }
 355
 356 c_escape(){
 357     echo "$*" | sed 's/["\\]/\\\0/g'
 358 }
 359
 360 sh_quote(){
 361     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 362     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 363     echo "$v"
 364 }
 365
 366 cleanws(){
 367     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 368 }
 369
 370 filter(){
 371     pat=$1
 372     shift
 373     for v; do
 374         eval "case $v in $pat) echo $v ;; esac"
 375     done
 376 }
 377
 378 filter_out(){
 379     pat=$1
 380     shift
 381     for v; do
 382         eval "case $v in $pat) ;; *) echo $v ;; esac"
 383     done
 384 }
 385
 386 map(){
 387     m=$1
 388     shift
 389     for v; do eval $m; done
 390 }
 391
 392 add_suffix(){
 393     suffix=$1
 394     shift
 395     for v; do echo ${v}${suffix}; done
 396 }
 397
 398 set_all(){
 399     value=$1
 400     shift
 401     for var in $*; do
 402         eval $var=$value
 403     done
 404 }
 405
 406 set_weak(){
 407     value=$1
 408     shift
 409     for var; do
 410         eval : \${$var:=$value}
 411     done
 412 }
 413
 414 sanitize_var_name(){
 415     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 416 }
 417
 418 set_safe(){
 419     var=$1
 420     shift
 421     eval $(sanitize_var_name "$var")='$*'
 422 }
 423
 424 get_safe(){
 425     eval echo \$$(sanitize_var_name "$1")
 426 }
 427
 428 pushvar(){
 429     for pvar in $*; do
 430         eval level=\${${pvar}_level:=0}
 431         eval ${pvar}_${level}="\$$pvar"
 432         eval ${pvar}_level=$(($level+1))
 433     done
 434 }
 435
 436 popvar(){
 437     for pvar in $*; do
 438         eval level=\${${pvar}_level:-0}
 439         test $level = 0 && continue
 440         eval level=$(($level-1))
 441         eval $pvar="\${${pvar}_${level}}"
 442         eval ${pvar}_level=$level
 443         eval unset ${pvar}_${level}
 444     done
 445 }
 446
 447 enable(){
 448     set_all yes $*
 449 }
 450
 451 disable(){
 452     set_all no $*
 453 }
 454
 455 enable_weak(){
 456     set_weak yes $*
 457 }
 458
 459 disable_weak(){
 460     set_weak no $*
 461 }
 462
 463 enable_safe(){
 464     for var; do
 465         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 466     done
 467 }
 468
 469 disable_safe(){
 470     for var; do
 471         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 472     done
 473 }
 474
 475 do_enable_deep(){
 476     for var; do
 477         enabled $var && continue
 478         eval sel="\$${var}_select"
 479         eval sgs="\$${var}_suggest"
 480         pushvar var sgs
 481         enable_deep $sel
 482         popvar sgs
 483         enable_deep_weak $sgs
 484         popvar var
 485     done
 486 }
 487
 488 enable_deep(){
 489     do_enable_deep $*
 490     enable $*
 491 }
 492
 493 enable_deep_weak(){
 494     for var; do
 495         disabled $var && continue
 496         pushvar var
 497         do_enable_deep $var
 498         popvar var
 499         enable_weak $var
 500     done
 501 }
 502
 503 enabled(){
 504     test "${1#!}" = "$1" && op== || op=!=
 505     eval test "x\$${1#!}" $op "xyes"
 506 }
 507
 508 disabled(){
 509     test "${1#!}" = "$1" && op== || op=!=
 510     eval test "x\$${1#!}" $op "xno"
 511 }
 512
 513 enabled_all(){
 514     for opt; do
 515         enabled $opt || return 1
 516     done
 517 }
 518
 519 disabled_all(){
 520     for opt; do
 521         disabled $opt || return 1
 522     done
 523 }
 524
 525 enabled_any(){
 526     for opt; do
 527         enabled $opt && return 0
 528     done
 529 }
 530
 531 disabled_any(){
 532     for opt; do
 533         disabled $opt && return 0
 534     done
 535     return 1
 536 }
 537
 538 set_default(){
 539     for opt; do
 540         eval : \${$opt:=\$${opt}_default}
 541     done
 542 }
 543
 544 is_in(){
 545     value=$1
 546     shift
 547     for var in $*; do
 548         [ $var = $value ] && return 0
 549     done
 550     return 1
 551 }
 552
 553 do_check_deps(){
 554     for cfg; do
 555         cfg="${cfg#!}"
 556         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 557         disabled ${cfg}_checking && continue
 558         enable ${cfg}_checking
 559         append allopts $cfg
 560
 561         eval dep_all="\$${cfg}_deps"
 562         eval dep_any="\$${cfg}_deps_any"
 563         eval dep_sel="\$${cfg}_select"
 564         eval dep_sgs="\$${cfg}_suggest"
 565         eval dep_ifa="\$${cfg}_if"
 566         eval dep_ifn="\$${cfg}_if_any"
 567
 568         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 569         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 570         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 571
 572         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 573         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 574         enabled_all  $dep_all || disable $cfg
 575         enabled_any  $dep_any || disable $cfg
 576         disabled_any $dep_sel && disable $cfg
 577
 578         if enabled $cfg; then
 579             enable_deep $dep_sel
 580             enable_deep_weak $dep_sgs
 581         fi
 582
 583         disable ${cfg}_checking
 584     done
 585 }
 586
 587 check_deps(){
 588     unset allopts
 589
 590     do_check_deps "$@"
 591
 592     for cfg in $allopts; do
 593         enabled $cfg || continue
 594         eval dep_extralibs="\$${cfg}_extralibs"
 595         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 596     done
 597 }
 598
 599 print_config(){
 600     pfx=$1
 601     files=$2
 602     shift 2
 603     map 'eval echo "$v \${$v:-no}"' "$@" |
 604     awk "BEGIN { split(\"$files\", files) }
 605         {
 606             c = \"$pfx\" toupper(\$1);
 607             v = \$2;
 608             sub(/yes/, 1, v);
 609             sub(/no/,  0, v);
 610             for (f in files) {
 611                 file = files[f];
 612                 if (file ~ /\\.h\$/) {
 613                     printf(\"#define %s %d\\n\", c, v) >>file;
 614                 } else if (file ~ /\\.asm\$/) {
 615                     printf(\"%%define %s %d\\n\", c, v) >>file;
 616                 } else if (file ~ /\\.mak\$/) {
 617                     n = -v ? \"\" : \"!\";
 618                     printf(\"%s%s=yes\\n\", n, c) >>file;
 619                 }
 620             }
 621         }"
 622 }
 623
 624 print_enabled(){
 625     suf=$1
 626     shift
 627     for v; do
 628         enabled $v && printf "%s\n" ${v%$suf};
 629     done
 630 }
 631
 632 append(){
 633     var=$1
 634     shift
 635     eval "$var=\"\$$var $*\""
 636 }
 637
 638 prepend(){
 639     var=$1
 640     shift
 641     eval "$var=\"$* \$$var\""
 642 }
 643
 644 add_cppflags(){
 645     append CPPFLAGS "$@"
 646 }
 647
 648 add_cflags(){
 649     append CFLAGS $($cflags_filter "$@")
 650 }
 651
 652 add_asflags(){
 653     append ASFLAGS $($asflags_filter "$@")
 654 }
 655
 656 add_ldflags(){
 657     append LDFLAGS $($ldflags_filter "$@")
 658 }
 659
 660 add_extralibs(){
 661     prepend extralibs $($ldflags_filter "$@")
 662 }
 663
 664 add_host_cppflags(){
 665     append host_cppflags "$@"
 666 }
 667
 668 add_host_cflags(){
 669     append host_cflags $($host_cflags_filter "$@")
 670 }
 671
 672 add_host_ldflags(){
 673     append host_ldflags $($host_ldflags_filter "$@")
 674 }
 675
 676 add_compat(){
 677     append compat_objs $1
 678     shift
 679     map 'add_cppflags -D$v' "$@"
 680 }
 681
 682 check_cmd(){
 683     log "$@"
 684     "$@" >> $logfile 2>&1
 685 }
 686
 687 cc_o(){
 688     eval printf '%s\\n' $CC_O
 689 }
 690
 691 cc_e(){
 692     eval printf '%s\\n' $CC_E
 693 }
 694
 695 check_cc(){
 696     log check_cc "$@"
 697     cat > $TMPC
 698     log_file $TMPC
 699     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 700 }
 701
 702 check_cpp(){
 703     log check_cpp "$@"
 704     cat > $TMPC
 705     log_file $TMPC
 706     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 707 }
 708
 709 as_o(){
 710     eval printf '%s\\n' $AS_O
 711 }
 712
 713 check_as(){
 714     log check_as "$@"
 715     cat > $TMPS
 716     log_file $TMPS
 717     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 718 }
 719
 720 check_inline_asm(){
 721     log check_inline_asm "$@"
 722     name="$1"
 723     code="$2"
 724     shift 2
 725     disable $name
 726     check_cc "$@" <<EOF && enable $name
 727 void foo(void){ __asm__ volatile($code); }
 728 EOF
 729 }
 730
 731 check_insn(){
 732     log check_insn "$@"
 733     check_inline_asm ${1}_inline "\"$2\""
 734     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 735 }
 736
 737 check_yasm(){
 738     log check_yasm "$@"
 739     echo "$1" > $TMPS
 740     log_file $TMPS
 741     shift 1
 742     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 743 }
 744
 745 ld_o(){
 746     eval printf '%s\\n' $LD_O
 747 }
 748
 749 check_ld(){
 750     log check_ld "$@"
 751     flags=$(filter_out '-l*' "$@")
 752     libs=$(filter '-l*' "$@")
 753     check_cc $($cflags_filter $flags) || return
 754     flags=$($ldflags_filter $flags)
 755     libs=$($ldflags_filter $libs)
 756     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 757 }
 758
 759 check_code(){
 760     log check_code "$@"
 761     check=$1
 762     headers=$2
 763     code=$3
 764     shift 3
 765     {
 766         for hdr in $headers; do
 767             echo "#include <$hdr>"
 768         done
 769         echo "int main(void) { $code; return 0; }"
 770     } | check_$check "$@"
 771 }
 772
 773 check_cppflags(){
 774     log check_cppflags "$@"
 775     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 776 int x;
 777 EOF
 778 }
 779
 780 check_cflags(){
 781     log check_cflags "$@"
 782     set -- $($cflags_filter "$@")
 783     check_cc "$@" <<EOF && append CFLAGS "$@"
 784 int x;
 785 EOF
 786 }
 787
 788 test_ldflags(){
 789     log test_ldflags "$@"
 790     check_ld "$@" <<EOF
 791 int main(void){ return 0; }
 792 EOF
 793 }
 794
 795 check_ldflags(){
 796     log check_ldflags "$@"
 797     test_ldflags "$@" && add_ldflags "$@"
 798 }
 799
 800 check_header(){
 801     log check_header "$@"
 802     header=$1
 803     shift
 804     disable_safe $header
 805     check_cpp "$@" <<EOF && enable_safe $header
 806 #include <$header>
 807 int x;
 808 EOF
 809 }
 810
 811 check_func(){
 812     log check_func "$@"
 813     func=$1
 814     shift
 815     disable $func
 816     check_ld "$@" <<EOF && enable $func
 817 extern int $func();
 818 int main(void){ $func(); }
 819 EOF
 820 }
 821
 822 check_mathfunc(){
 823     log check_mathfunc "$@"
 824     func=$1
 825     narg=$2
 826     shift 2
 827     test $narg = 2 && args="f, g" || args="f"
 828     disable $func
 829     check_ld "$@" <<EOF && enable $func
 830 #include <math.h>
 831 float foo(float f, float g) { return $func($args); }
 832 int main(void){ return 0; }
 833 EOF
 834 }
 835
 836 check_func_headers(){
 837     log check_func_headers "$@"
 838     headers=$1
 839     funcs=$2
 840     shift 2
 841     {
 842         for hdr in $headers; do
 843             echo "#include <$hdr>"
 844         done
 845         for func in $funcs; do
 846             echo "long check_$func(void) { return (long) $func; }"
 847         done
 848         echo "int main(void) { return 0; }"
 849     } | check_ld "$@" && enable $funcs && enable_safe $headers
 850 }
 851
 852 check_cpp_condition(){
 853     log check_cpp_condition "$@"
 854     header=$1
 855     condition=$2
 856     shift 2
 857     check_cpp "$@" <<EOF
 858 #include <$header>
 859 #if !($condition)
 860 #error "unsatisfied condition: $condition"
 861 #endif
 862 EOF
 863 }
 864
 865 check_lib(){
 866     log check_lib "$@"
 867     header="$1"
 868     func="$2"
 869     shift 2
 870     check_header $header && check_func $func "$@" && add_extralibs "$@"
 871 }
 872
 873 check_lib2(){
 874     log check_lib2 "$@"
 875     headers="$1"
 876     funcs="$2"
 877     shift 2
 878     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 879 }
 880
 881 check_pkg_config(){
 882     log check_pkg_config "$@"
 883     pkg="$1"
 884     headers="$2"
 885     funcs="$3"
 886     shift 3
 887     $pkg_config --exists $pkg || return
 888     pkg_cflags=$($pkg_config --cflags $pkg)
 889     pkg_libs=$($pkg_config --libs $pkg)
 890     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 891         set_safe ${pkg}_cflags $pkg_cflags   &&
 892         set_safe ${pkg}_libs   $pkg_libs
 893 }
 894
 895 check_exec(){
 896     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 897 }
 898
 899 check_exec_crash(){
 900     code=$(cat)
 901
 902     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 903     # are safe but may not be available everywhere.  Thus we use
 904     # raise(SIGTERM) instead.  The check is run in a subshell so we
 905     # can redirect the "Terminated" message from the shell.  SIGBUS
 906     # is not defined by standard C so it is used conditionally.
 907
 908     (check_exec "$@") >> $logfile 2>&1 <<EOF
 909 #include <signal.h>
 910 static void sighandler(int sig){
 911     raise(SIGTERM);
 912 }
 913 int foo(void){
 914     $code
 915 }
 916 int (*func_ptr)(void) = foo;
 917 int main(void){
 918     signal(SIGILL, sighandler);
 919     signal(SIGFPE, sighandler);
 920     signal(SIGSEGV, sighandler);
 921 #ifdef SIGBUS
 922     signal(SIGBUS, sighandler);
 923 #endif
 924     return func_ptr();
 925 }
 926 EOF
 927 }
 928
 929 check_type(){
 930     log check_type "$@"
 931     headers=$1
 932     type=$2
 933     shift 2
 934     disable_safe "$type"
 935     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 936 }
 937
 938 check_struct(){
 939     log check_struct "$@"
 940     headers=$1
 941     struct=$2
 942     member=$3
 943     shift 3
 944     disable_safe "${struct}_${member}"
 945     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 946         enable_safe "${struct}_${member}"
 947 }
 948
 949 check_builtin(){
 950     log check_builtin "$@"
 951     name=$1
 952     headers=$2
 953     builtin=$3
 954     shift 3
 955     disable "$name"
 956     check_code ld "$headers" "$builtin" "$@" && enable "$name"
 957 }
 958
 959 require(){
 960     name="$1"
 961     header="$2"
 962     func="$3"
 963     shift 3
 964     check_lib $header $func "$@" || die "ERROR: $name not found"
 965 }
 966
 967 require2(){
 968     name="$1"
 969     headers="$2"
 970     func="$3"
 971     shift 3
 972     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
 973 }
 974
 975 require_pkg_config(){
 976     pkg="$1"
 977     check_pkg_config "$@" || die "ERROR: $pkg not found"
 978     add_cflags    $(get_safe ${pkg}_cflags)
 979     add_extralibs $(get_safe ${pkg}_libs)
 980 }
 981
 982 hostcc_o(){
 983     eval printf '%s\\n' $HOSTCC_O
 984 }
 985
 986 check_host_cc(){
 987     log check_host_cc "$@"
 988     cat > $TMPC
 989     log_file $TMPC
 990     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
 991 }
 992
 993 check_host_cppflags(){
 994     log check_host_cppflags "$@"
 995     check_host_cc "$@" <<EOF && append host_cppflags "$@"
 996 int x;
 997 EOF
 998 }
 999
1000 check_host_cflags(){
1001     log check_host_cflags "$@"
1002     set -- $($host_cflags_filter "$@")
1003     check_host_cc "$@" <<EOF && append host_cflags "$@"
1004 int x;
1005 EOF
1006 }
1007
1008 apply(){
1009     file=$1
1010     shift
1011     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1012 }
1013
1014 cp_if_changed(){
1015     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1016     mkdir -p "$(dirname $2)"
1017     $cp_f "$1" "$2"
1018 }
1019
1020 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1021 # system-dependent things.
1022
1023 COMPONENT_LIST="
1024     bsfs
1025     decoders
1026     demuxers
1027     encoders
1028     filters
1029     hwaccels
1030     indevs
1031     muxers
1032     outdevs
1033     parsers
1034     protocols
1035 "
1036
1037 EXTERNAL_LIBRARY_LIST="
1038     avisynth
1039     bzlib
1040     frei0r
1041     gnutls
1042     libcdio
1043     libdc1394
1044     libfaac
1045     libfdk_aac
1046     libfreetype
1047     libgsm
1048     libilbc
1049     libmp3lame
1050     libopencore_amrnb
1051     libopencore_amrwb
1052     libopencv
1053     libopenjpeg
1054     libopus
1055     libpulse
1056     librtmp
1057     libschroedinger
1058     libspeex
1059     libtheora
1060     libvo_aacenc
1061     libvo_amrwbenc
1062     libvorbis
1063     libvpx
1064     libwavpack
1065     libx264
1066     libxavs
1067     libxvid
1068     openssl
1069     x11grab
1070     zlib
1071 "
1072
1073 HWACCEL_LIST="
1074     dxva2
1075     vaapi
1076     vda
1077     vdpau
1078 "
1079 LIBRARY_LIST="
1080     avcodec
1081     avdevice
1082     avfilter
1083     avformat
1084     avresample
1085     avutil
1086     swscale
1087 "
1088
1089 PROGRAM_LIST="
1090     avconv
1091     avplay
1092     avprobe
1093     avserver
1094 "
1095
1096 CONFIG_LIST="
1097     $COMPONENT_LIST
1098     $EXTERNAL_LIBRARY_LIST
1099     $HWACCEL_LIST
1100     $LIBRARY_LIST
1101     $PROGRAM_LIST
1102     dct
1103     doc
1104     error_resilience
1105     fft
1106     gpl
1107     gray
1108     hardcoded_tables
1109     lsp
1110     lzo
1111     mdct
1112     memalign_hack
1113     network
1114     nonfree
1115     pic
1116     rdft
1117     runtime_cpudetect
1118     safe_bitstream_reader
1119     shared
1120     small
1121     sram
1122     static
1123     swscale_alpha
1124     thumb
1125     version3
1126     xmm_clobber_test
1127 "
1128
1129 THREADS_LIST='
1130     pthreads
1131     w32threads
1132 '
1133
1134 ATOMICS_LIST='
1135     atomics_gcc
1136     atomics_suncc
1137     atomics_win32
1138 '
1139
1140 ARCH_LIST='
1141     aarch64
1142     alpha
1143     arm
1144     avr32
1145     avr32_ap
1146     avr32_uc
1147     bfin
1148     ia64
1149     m68k
1150     mips
1151     mips64
1152     parisc
1153     ppc
1154     ppc64
1155     s390
1156     sh4
1157     sparc
1158     sparc64
1159     tilegx
1160     tilepro
1161     tomi
1162     x86
1163     x86_32
1164     x86_64
1165 '
1166
1167 ARCH_EXT_LIST_ARM='
1168     armv5te
1169     armv6
1170     armv6t2
1171     neon
1172     vfp
1173     vfpv3
1174 '
1175
1176 ARCH_EXT_LIST_X86='
1177     amd3dnow
1178     amd3dnowext
1179     avx
1180     fma4
1181     mmx
1182     mmxext
1183     sse
1184     sse2
1185     sse3
1186     sse4
1187     sse42
1188     ssse3
1189 '
1190
1191 ARCH_EXT_LIST="
1192     $ARCH_EXT_LIST_ARM
1193     $ARCH_EXT_LIST_X86
1194     altivec
1195     ppc4xx
1196     vis
1197 "
1198
1199 HAVE_LIST_CMDLINE='
1200     inline_asm
1201     symver
1202     yasm
1203 '
1204
1205 HAVE_LIST_PUB='
1206     bigendian
1207     fast_unaligned
1208 '
1209
1210 MATH_FUNCS="
1211     atanf
1212     atan2f
1213     cbrtf
1214     cosf
1215     exp2
1216     exp2f
1217     expf
1218     isinf
1219     isnan
1220     ldexpf
1221     llrint
1222     llrintf
1223     log2
1224     log2f
1225     log10f
1226     lrint
1227     lrintf
1228     powf
1229     rint
1230     round
1231     roundf
1232     sinf
1233     trunc
1234     truncf
1235 "
1236
1237 HAVE_LIST="
1238     $ARCH_EXT_LIST
1239     $(add_suffix _external $ARCH_EXT_LIST)
1240     $(add_suffix _inline   $ARCH_EXT_LIST)
1241     $HAVE_LIST_CMDLINE
1242     $HAVE_LIST_PUB
1243     $THREADS_LIST
1244     $ATOMICS_LIST
1245     $MATH_FUNCS
1246     aligned_malloc
1247     aligned_stack
1248     alsa_asoundlib_h
1249     altivec_h
1250     arpa_inet_h
1251     asm_mod_q
1252     asm_mod_y
1253     atomic_cas_ptr
1254     atomics_native
1255     attribute_may_alias
1256     attribute_packed
1257     cdio_paranoia_h
1258     cdio_paranoia_paranoia_h
1259     closesocket
1260     CommandLineToArgvW
1261     cpunop
1262     CryptGenRandom
1263     dcbzl
1264     dev_bktr_ioctl_bt848_h
1265     dev_bktr_ioctl_meteor_h
1266     dev_ic_bt8xx_h
1267     dev_video_bktr_ioctl_bt848_h
1268     dev_video_meteor_ioctl_meteor_h
1269     direct_h
1270     dlfcn_h
1271     dlopen
1272     dos_paths
1273     dxva_h
1274     ebp_available
1275     ebx_available
1276     fast_64bit
1277     fast_clz
1278     fast_cmov
1279     fcntl
1280     fork
1281     getaddrinfo
1282     gethrtime
1283     getopt
1284     GetProcessAffinityMask
1285     GetProcessMemoryInfo
1286     GetProcessTimes
1287     GetSystemTimeAsFileTime
1288     getrusage
1289     getservbyport
1290     gettimeofday
1291     gnu_as
1292     gsm_h
1293     i686
1294     ibm_asm
1295     inet_aton
1296     io_h
1297     inline_asm_labels
1298     isatty
1299     jack_port_get_latency_range
1300     ldbrx
1301     libdc1394_1
1302     libdc1394_2
1303     local_aligned_16
1304     local_aligned_8
1305     localtime_r
1306     loongson
1307     machine_ioctl_bt848_h
1308     machine_ioctl_meteor_h
1309     machine_rw_barrier
1310     malloc_h
1311     MapViewOfFile
1312     memalign
1313     MemoryBarrier
1314     mkstemp
1315     mm_empty
1316     mmap
1317     mprotect
1318     msvcrt
1319     nanosleep
1320     poll_h
1321     posix_memalign
1322     pragma_deprecated
1323     rdtsc
1324     sched_getaffinity
1325     sdl
1326     SetConsoleTextAttribute
1327     setmode
1328     setrlimit
1329     Sleep
1330     sndio_h
1331     socklen_t
1332     soundcard_h
1333     strerror_r
1334     strptime
1335     strtok_r
1336     struct_addrinfo
1337     struct_group_source_req
1338     struct_ip_mreq_source
1339     struct_ipv6_mreq
1340     struct_pollfd
1341     struct_rusage_ru_maxrss
1342     struct_sockaddr_in6
1343     struct_sockaddr_sa_len
1344     struct_sockaddr_storage
1345     struct_v4l2_frmivalenum_discrete
1346     symver_asm_label
1347     symver_gnu_asm
1348     sync_val_compare_and_swap
1349     sysconf
1350     sysctl
1351     sys_mman_h
1352     sys_param_h
1353     sys_resource_h
1354     sys_select_h
1355     sys_soundcard_h
1356     sys_time_h
1357     sys_un_h
1358     sys_videoio_h
1359     threads
1360     unistd_h
1361     usleep
1362     vfp_args
1363     VirtualAlloc
1364     windows_h
1365     winsock2_h
1366     xform_asm
1367     xmm_clobbers
1368 "
1369
1370 # options emitted with CONFIG_ prefix but not available on the command line
1371 CONFIG_EXTRA="
1372     aandcttables
1373     ac3dsp
1374     audio_frame_queue
1375     dsputil
1376     gcrypt
1377     golomb
1378     gplv3
1379     h264chroma
1380     h264dsp
1381     h264pred
1382     h264qpel
1383     hpeldsp
1384     huffman
1385     lgplv3
1386     lpc
1387     mpegaudio
1388     mpegaudiodsp
1389     mpegvideo
1390     mpegvideoenc
1391     nettle
1392     rangecoder
1393     riffdec
1394     riffenc
1395     rtpdec
1396     rtpenc_chain
1397     sinewin
1398     videodsp
1399     vp3dsp
1400 "
1401
1402 CMDLINE_SELECT="
1403     $ARCH_EXT_LIST
1404     $CONFIG_LIST
1405     $HAVE_LIST_CMDLINE
1406     $THREADS_LIST
1407     asm
1408     cross_compile
1409     debug
1410     extra_warnings
1411     logging
1412     lto
1413     optimizations
1414 "
1415
1416 PATHS_LIST='
1417     bindir
1418     datadir
1419     incdir
1420     libdir
1421     mandir
1422     prefix
1423     shlibdir
1424 '
1425
1426 CMDLINE_SET="
1427     $PATHS_LIST
1428     ar
1429     arch
1430     as
1431     build_suffix
1432     cc
1433     cpu
1434     cross_prefix
1435     dep_cc
1436     extra_version
1437     host_cc
1438     host_cflags
1439     host_ld
1440     host_ldflags
1441     host_libs
1442     host_os
1443     ld
1444     logfile
1445     malloc_prefix
1446     nm
1447     optflags
1448     pkg_config
1449     random_seed
1450     samples
1451     sysinclude
1452     sysroot
1453     target_exec
1454     target_os
1455     target_path
1456     target_samples
1457     toolchain
1458 "
1459
1460 CMDLINE_APPEND="
1461     extra_cflags
1462     host_cppflags
1463 "
1464
1465 # code dependency declarations
1466
1467 # architecture extensions
1468
1469 armv5te_deps="arm"
1470 armv6_deps="arm"
1471 armv6t2_deps="arm"
1472 neon_deps="arm"
1473 vfp_deps="arm"
1474 vfpv3_deps="vfp"
1475
1476 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1477
1478 altivec_deps="ppc"
1479 ppc4xx_deps="ppc"
1480
1481 vis_deps="sparc"
1482
1483 x86_64_suggest="fast_cmov i686"
1484
1485 amd3dnow_deps="mmx"
1486 amd3dnowext_deps="amd3dnow"
1487 mmx_deps="x86"
1488 mmxext_deps="mmx"
1489 sse_deps="mmxext"
1490 sse2_deps="sse"
1491 sse3_deps="sse2"
1492 ssse3_deps="sse3"
1493 sse4_deps="ssse3"
1494 sse42_deps="sse4"
1495 avx_deps="sse42"
1496 fma4_deps="avx"
1497
1498 mmx_external_deps="yasm"
1499 mmx_inline_deps="inline_asm"
1500 mmx_suggest="mmx_external mmx_inline"
1501
1502 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1503     eval dep=\$${ext}_deps
1504     eval ${ext}_external_deps='"${dep}_external"'
1505     eval ${ext}_inline_deps='"${dep}_inline"'
1506     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1507 done
1508
1509 aligned_stack_if_any="ppc x86"
1510 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1511 fast_clz_if_any="alpha avr32 mips ppc x86"
1512 fast_unaligned_if_any="ppc x86"
1513
1514 inline_asm_deps="!tms470"
1515 need_memalign="altivec neon sse"
1516
1517 symver_if_any="symver_asm_label symver_gnu_asm"
1518
1519 log2_deps="!msvcrt"
1520
1521 # subsystems
1522 dct_select="rdft"
1523 error_resilience_select="dsputil"
1524 lpc_select="dsputil"
1525 mdct_select="fft"
1526 rdft_select="fft"
1527 mpegaudio_select="mpegaudiodsp"
1528 mpegaudiodsp_select="dct"
1529 mpegvideo_select="dsputil hpeldsp videodsp"
1530 mpegvideoenc_select="mpegvideo"
1531
1532 # decoders / encoders
1533 aac_decoder_select="mdct sinewin"
1534 aac_encoder_select="audio_frame_queue mdct sinewin"
1535 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1536 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1537 ac3_encoder_select="mdct ac3dsp dsputil"
1538 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1539 aic_decoder_select="dsputil golomb"
1540 alac_encoder_select="lpc"
1541 als_decoder_select="dsputil"
1542 amrnb_decoder_select="lsp"
1543 amrwb_decoder_select="lsp"
1544 amv_decoder_select="dsputil hpeldsp"
1545 ape_decoder_select="dsputil"
1546 asv1_decoder_select="dsputil"
1547 asv1_encoder_select="dsputil"
1548 asv2_decoder_select="dsputil"
1549 asv2_encoder_select="dsputil"
1550 atrac1_decoder_select="mdct sinewin"
1551 atrac3_decoder_select="mdct"
1552 bink_decoder_select="dsputil hpeldsp"
1553 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1554 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1555 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1556 cllc_decoder_select="dsputil"
1557 comfortnoise_encoder_select="lpc"
1558 cook_decoder_select="dsputil mdct sinewin"
1559 cscd_decoder_select="lzo"
1560 cscd_decoder_suggest="zlib"
1561 dca_decoder_select="mdct"
1562 dnxhd_decoder_select="dsputil"
1563 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1564 dvvideo_decoder_select="dsputil"
1565 dvvideo_encoder_select="dsputil"
1566 dxa_decoder_select="zlib"
1567 eac3_decoder_select="ac3_decoder"
1568 eac3_encoder_select="ac3_encoder"
1569 eamad_decoder_select="aandcttables dsputil mpegvideo"
1570 eatgq_decoder_select="aandcttables dsputil"
1571 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1572 ffv1_decoder_select="dsputil golomb rangecoder"
1573 ffv1_encoder_select="dsputil rangecoder"
1574 ffvhuff_decoder_select="dsputil"
1575 ffvhuff_encoder_select="dsputil huffman"
1576 flac_decoder_select="golomb"
1577 flac_encoder_select="dsputil golomb lpc"
1578 flashsv_decoder_select="zlib"
1579 flashsv_encoder_select="zlib"
1580 flashsv2_decoder_select="zlib"
1581 flv_decoder_select="h263_decoder"
1582 flv_encoder_select="h263_encoder"
1583 fourxm_decoder_select="dsputil"
1584 fraps_decoder_select="dsputil huffman"
1585 g2m_decoder_select="dsputil zlib"
1586 h261_decoder_select="error_resilience mpegvideo"
1587 h261_encoder_select="aandcttables mpegvideoenc"
1588 h263_decoder_select="error_resilience h263_parser mpegvideo"
1589 h263_encoder_select="aandcttables mpegvideoenc"
1590 h263i_decoder_select="h263_decoder"
1591 h263p_encoder_select="h263_encoder"
1592 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1593 h264_decoder_suggest="error_resilience"
1594 huffyuv_decoder_select="dsputil"
1595 huffyuv_encoder_select="dsputil huffman"
1596 iac_decoder_select="dsputil fft mdct sinewin"
1597 imc_decoder_select="dsputil fft mdct sinewin"
1598 indeo3_decoder_select="hpeldsp"
1599 interplay_video_decoder_select="hpeldsp"
1600 jpegls_decoder_select="dsputil golomb hpeldsp"
1601 jpegls_encoder_select="golomb"
1602 jv_decoder_select="dsputil"
1603 lagarith_decoder_select="dsputil"
1604 ljpeg_encoder_select="aandcttables mpegvideoenc"
1605 loco_decoder_select="golomb"
1606 mdec_decoder_select="dsputil error_resilience mpegvideo"
1607 mimic_decoder_select="dsputil hpeldsp"
1608 mjpeg_decoder_select="dsputil hpeldsp"
1609 mjpegb_decoder_select="dsputil hpeldsp"
1610 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1611 mlp_decoder_select="dsputil mlp_parser"
1612 motionpixels_decoder_select="dsputil"
1613 mp1_decoder_select="mpegaudio"
1614 mp1float_decoder_select="mpegaudio"
1615 mp2_decoder_select="mpegaudio"
1616 mp2float_decoder_select="mpegaudio"
1617 mp3_decoder_select="mpegaudio"
1618 mp3adu_decoder_select="mpegaudio"
1619 mp3adufloat_decoder_select="mpegaudio"
1620 mp3float_decoder_select="mpegaudio"
1621 mp3on4_decoder_select="mpegaudio"
1622 mp3on4float_decoder_select="mpegaudio"
1623 mpc7_decoder_select="dsputil mpegaudiodsp"
1624 mpc8_decoder_select="dsputil mpegaudiodsp"
1625 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1626 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1627 mpeg1video_decoder_select="error_resilience mpegvideo"
1628 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1629 mpeg2video_decoder_select="error_resilience mpegvideo"
1630 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1631 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1632 mpeg4_encoder_select="h263_encoder"
1633 msmpeg4v1_decoder_select="h263_decoder"
1634 msmpeg4v2_decoder_select="h263_decoder"
1635 msmpeg4v2_encoder_select="h263_encoder"
1636 msmpeg4v3_decoder_select="h263_decoder"
1637 msmpeg4v3_encoder_select="h263_encoder"
1638 mss2_decoder_select="error_resilience vc1_decoder"
1639 mxpeg_decoder_select="dsputil hpeldsp"
1640 nellymoser_decoder_select="mdct sinewin"
1641 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1642 nuv_decoder_select="dsputil lzo"
1643 png_decoder_select="dsputil zlib"
1644 png_encoder_select="dsputil zlib"
1645 prores_decoder_select="dsputil"
1646 prores_encoder_select="dsputil"
1647 qcelp_decoder_select="lsp"
1648 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1649 ra_144_encoder_select="audio_frame_queue lpc"
1650 ralf_decoder_select="golomb"
1651 rv10_decoder_select="error_resilience h263_decoder"
1652 rv10_encoder_select="h263_encoder"
1653 rv20_decoder_select="error_resilience h263_decoder"
1654 rv20_encoder_select="h263_encoder"
1655 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1656 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1657 shorten_decoder_select="golomb"
1658 sipr_decoder_select="lsp"
1659 sp5x_decoder_select="dsputil hpeldsp"
1660 svq1_decoder_select="hpeldsp"
1661 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1662 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1663 svq3_decoder_suggest="error_resilience zlib"
1664 tak_decoder_select="dsputil"
1665 theora_decoder_select="vp3_decoder"
1666 tiff_decoder_suggest="zlib"
1667 tiff_encoder_suggest="zlib"
1668 thp_decoder_select="dsputil hpeldsp"
1669 truehd_decoder_select="mlp_decoder"
1670 truemotion2_decoder_select="dsputil"
1671 truespeech_decoder_select="dsputil"
1672 tscc_decoder_select="zlib"
1673 twinvq_decoder_select="mdct lsp sinewin"
1674 utvideo_decoder_select="dsputil"
1675 utvideo_encoder_select="dsputil huffman"
1676 vble_decoder_select="dsputil"
1677 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1678 vc1image_decoder_select="vc1_decoder"
1679 vorbis_decoder_select="mdct"
1680 vorbis_encoder_select="mdct"
1681 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1682 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1683 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1684 vp6a_decoder_select="vp6_decoder"
1685 vp6f_decoder_select="vp6_decoder"
1686 vp8_decoder_select="h264pred videodsp"
1687 wmapro_decoder_select="mdct sinewin"
1688 wmav1_decoder_select="mdct sinewin"
1689 wmav1_encoder_select="mdct sinewin"
1690 wmav2_decoder_select="mdct sinewin"
1691 wmav2_encoder_select="mdct sinewin"
1692 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1693 wmv1_decoder_select="h263_decoder"
1694 wmv1_encoder_select="h263_encoder"
1695 wmv2_decoder_select="h263_decoder videodsp"
1696 wmv2_encoder_select="h263_encoder"
1697 wmv3_decoder_select="vc1_decoder"
1698 wmv3image_decoder_select="wmv3_decoder"
1699 zerocodec_decoder_select="zlib"
1700 zlib_decoder_select="zlib"
1701 zlib_encoder_select="zlib"
1702 zmbv_decoder_select="zlib"
1703 zmbv_encoder_select="zlib"
1704
1705 # hardware accelerators
1706 dxva2_deps="dxva2api_h"
1707 vaapi_deps="va_va_h"
1708 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1709 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1710 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1711
1712 h263_vaapi_hwaccel_deps="vaapi"
1713 h263_vaapi_hwaccel_select="h263_decoder"
1714 h263_vdpau_hwaccel_deps="vdpau"
1715 h263_vdpau_hwaccel_select="h263_decoder"
1716 h264_dxva2_hwaccel_deps="dxva2"
1717 h264_dxva2_hwaccel_select="h264_decoder"
1718 h264_vaapi_hwaccel_deps="vaapi"
1719 h264_vaapi_hwaccel_select="h264_decoder"
1720 h264_vda_hwaccel_deps="vda"
1721 h264_vda_hwaccel_select="h264_decoder"
1722 h264_vdpau_hwaccel_deps="vdpau"
1723 h264_vdpau_hwaccel_select="h264_decoder"
1724 mpeg1_vdpau_hwaccel_deps="vdpau"
1725 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1726 mpeg2_dxva2_hwaccel_deps="dxva2"
1727 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1728 mpeg2_vaapi_hwaccel_deps="vaapi"
1729 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1730 mpeg2_vdpau_hwaccel_deps="vdpau"
1731 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1732 mpeg4_vaapi_hwaccel_deps="vaapi"
1733 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1734 mpeg4_vdpau_hwaccel_deps="vdpau"
1735 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1736 vc1_dxva2_hwaccel_deps="dxva2"
1737 vc1_dxva2_hwaccel_select="vc1_decoder"
1738 vc1_vaapi_hwaccel_deps="vaapi"
1739 vc1_vaapi_hwaccel_select="vc1_decoder"
1740 vc1_vdpau_hwaccel_deps="vdpau"
1741 vc1_vdpau_hwaccel_select="vc1_decoder"
1742 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1743 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1744 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1745
1746 # parsers
1747 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1748 mpeg4video_parser_select="error_resilience mpegvideo"
1749 mpegvideo_parser_select="error_resilience mpegvideo"
1750 vc1_parser_select="mpegvideo"
1751
1752 # external libraries
1753 libfaac_encoder_deps="libfaac"
1754 libfaac_encoder_select="audio_frame_queue"
1755 libfdk_aac_encoder_deps="libfdk_aac"
1756 libfdk_aac_encoder_select="audio_frame_queue"
1757 libgsm_decoder_deps="libgsm"
1758 libgsm_encoder_deps="libgsm"
1759 libgsm_ms_decoder_deps="libgsm"
1760 libgsm_ms_encoder_deps="libgsm"
1761 libilbc_decoder_deps="libilbc"
1762 libilbc_encoder_deps="libilbc"
1763 libmp3lame_encoder_deps="libmp3lame"
1764 libmp3lame_encoder_select="audio_frame_queue"
1765 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1766 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1767 libopencore_amrnb_encoder_select="audio_frame_queue"
1768 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1769 libopenjpeg_decoder_deps="libopenjpeg"
1770 libopenjpeg_encoder_deps="libopenjpeg"
1771 libopus_decoder_deps="libopus"
1772 libopus_encoder_deps="libopus"
1773 libopus_encoder_select="audio_frame_queue"
1774 libschroedinger_decoder_deps="libschroedinger"
1775 libschroedinger_encoder_deps="libschroedinger"
1776 libspeex_decoder_deps="libspeex"
1777 libspeex_encoder_deps="libspeex"
1778 libspeex_encoder_select="audio_frame_queue"
1779 libtheora_encoder_deps="libtheora"
1780 libvo_aacenc_encoder_deps="libvo_aacenc"
1781 libvo_aacenc_encoder_select="audio_frame_queue"
1782 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1783 libvorbis_encoder_deps="libvorbis"
1784 libvorbis_encoder_select="audio_frame_queue"
1785 libvpx_vp8_decoder_deps="libvpx"
1786 libvpx_vp8_encoder_deps="libvpx"
1787 libvpx_vp9_decoder_deps="libvpx"
1788 libvpx_vp9_encoder_deps="libvpx"
1789 libwavpack_encoder_deps="libwavpack"
1790 libx264_encoder_deps="libx264"
1791 libxavs_encoder_deps="libxavs"
1792 libxvid_encoder_deps="libxvid"
1793
1794 # demuxers / muxers
1795 ac3_demuxer_select="ac3_parser"
1796 asf_demuxer_select="riffdec"
1797 asf_muxer_select="riffenc"
1798 asf_stream_muxer_select="asf_muxer"
1799 avi_demuxer_select="riffdec"
1800 avi_muxer_select="riffenc"
1801 avisynth_demuxer_deps="avisynth"
1802 avisynth_demuxer_select="riffdec"
1803 caf_demuxer_select="riffdec"
1804 dirac_demuxer_select="dirac_parser"
1805 dxa_demuxer_select="riffdec"
1806 eac3_demuxer_select="ac3_parser"
1807 flac_demuxer_select="flac_parser"
1808 ipod_muxer_select="mov_muxer"
1809 ismv_muxer_select="mov_muxer"
1810 matroska_audio_muxer_select="matroska_muxer"
1811 matroska_demuxer_select="riffdec"
1812 matroska_demuxer_suggest="bzlib lzo zlib"
1813 matroska_muxer_select="riffenc"
1814 mmf_muxer_select="riffenc"
1815 mov_demuxer_select="riffdec"
1816 mov_demuxer_suggest="zlib"
1817 mov_muxer_select="riffenc rtpenc_chain"
1818 mp3_demuxer_select="mpegaudio_parser"
1819 mp4_muxer_select="mov_muxer"
1820 mpegts_muxer_select="adts_muxer latm_muxer"
1821 mpegtsraw_demuxer_select="mpegts_demuxer"
1822 mxf_d10_muxer_select="mxf_muxer"
1823 nut_muxer_select="riffenc"
1824 nuv_demuxer_select="riffdec"
1825 ogg_demuxer_select="golomb"
1826 psp_muxer_select="mov_muxer"
1827 rtp_demuxer_select="sdp_demuxer"
1828 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1829 rtsp_demuxer_select="http_protocol rtpdec"
1830 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1831 sap_demuxer_select="sdp_demuxer"
1832 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1833 sdp_demuxer_select="rtpdec"
1834 smoothstreaming_muxer_select="ismv_muxer"
1835 spdif_muxer_select="aac_parser"
1836 tak_demuxer_select="tak_parser"
1837 tg2_muxer_select="mov_muxer"
1838 tgp_muxer_select="mov_muxer"
1839 w64_demuxer_deps="wav_demuxer"
1840 wav_demuxer_select="riffdec"
1841 wav_muxer_select="riffenc"
1842 webm_muxer_select="riffenc"
1843 wtv_demuxer_select="riffdec"
1844 xmv_demuxer_select="riffdec"
1845 xwma_demuxer_select="riffdec"
1846
1847 # indevs / outdevs
1848 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1849 alsa_outdev_deps="alsa_asoundlib_h"
1850 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1851 dv1394_indev_deps="dv1394 dv_demuxer"
1852 fbdev_indev_deps="linux_fb_h"
1853 jack_indev_deps="jack_jack_h pthreads"
1854 libcdio_indev_deps="libcdio"
1855 libdc1394_indev_deps="libdc1394"
1856 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1857 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1858 pulse_indev_deps="libpulse"
1859 sndio_indev_deps="sndio_h"
1860 sndio_outdev_deps="sndio_h"
1861 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1862 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1863 vfwcap_indev_extralibs="-lavicap32"
1864 x11grab_indev_deps="x11grab XShmCreateImage"
1865
1866 # protocols
1867 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1868 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1869 ffrtmpcrypt_protocol_select="tcp_protocol"
1870 ffrtmphttp_protocol_deps="!librtmp_protocol"
1871 ffrtmphttp_protocol_select="http_protocol"
1872 gopher_protocol_select="network"
1873 httpproxy_protocol_select="tcp_protocol"
1874 http_protocol_select="tcp_protocol"
1875 https_protocol_select="tls_protocol"
1876 librtmp_protocol_deps="librtmp"
1877 librtmpe_protocol_deps="librtmp"
1878 librtmps_protocol_deps="librtmp"
1879 librtmpt_protocol_deps="librtmp"
1880 librtmpte_protocol_deps="librtmp"
1881 mmsh_protocol_select="http_protocol"
1882 mmst_protocol_select="network"
1883 rtmp_protocol_deps="!librtmp_protocol"
1884 rtmp_protocol_select="tcp_protocol"
1885 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1886 rtmps_protocol_deps="!librtmp_protocol"
1887 rtmps_protocol_select="tls_protocol"
1888 rtmpt_protocol_select="ffrtmphttp_protocol"
1889 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1890 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1891 rtp_protocol_select="udp_protocol"
1892 sctp_protocol_deps="struct_sctp_event_subscribe"
1893 sctp_protocol_select="network"
1894 srtp_protocol_select="rtp_protocol"
1895 tcp_protocol_select="network"
1896 tls_protocol_deps_any="openssl gnutls"
1897 tls_protocol_select="tcp_protocol"
1898 udp_protocol_select="network"
1899 unix_protocol_deps="sys_un_h"
1900 unix_protocol_select="network"
1901
1902 # filters
1903 blackframe_filter_deps="gpl"
1904 boxblur_filter_deps="gpl"
1905 cropdetect_filter_deps="gpl"
1906 delogo_filter_deps="gpl"
1907 drawtext_filter_deps="libfreetype"
1908 frei0r_filter_deps="frei0r dlopen strtok_r"
1909 frei0r_filter_extralibs='$ldl'
1910 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1911 frei0r_src_filter_extralibs='$ldl'
1912 hqdn3d_filter_deps="gpl"
1913 interlace_filter_deps="gpl"
1914 resample_filter_deps="avresample"
1915 ocv_filter_deps="libopencv"
1916 scale_filter_deps="swscale"
1917 yadif_filter_deps="gpl"
1918
1919 # libraries
1920 avcodec_deps="avutil"
1921 avdevice_deps="avutil avcodec avformat"
1922 avfilter_deps="avutil"
1923 avformat_deps="avutil avcodec"
1924 avresample_deps="avutil"
1925 swscale_deps="avutil"
1926
1927 # programs
1928 avconv_deps="avcodec avfilter avformat avresample swscale"
1929 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1930                fps_filter null_filter resample_filter scale_filter
1931                setpts_filter trim_filter"
1932 avplay_deps="avcodec avformat avresample swscale sdl"
1933 avplay_select="rdft"
1934 avprobe_deps="avcodec avformat"
1935 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1936 avserver_extralibs='$ldl'
1937
1938 doc_deps="texi2html"
1939
1940 # default parameters
1941
1942 logfile="config.log"
1943
1944 # installation paths
1945 prefix_default="/usr/local"
1946 bindir_default='${prefix}/bin'
1947 datadir_default='${prefix}/share/avconv'
1948 incdir_default='${prefix}/include'
1949 libdir_default='${prefix}/lib'
1950 mandir_default='${prefix}/share/man'
1951 shlibdir_default="$libdir_default"
1952
1953 # toolchain
1954 ar_default="ar"
1955 cc_default="gcc"
1956 host_cc_default="gcc"
1957 cp_f="cp -f"
1958 ln_s="ln -s -f"
1959 nm_default="nm -g"
1960 objformat="elf"
1961 pkg_config_default=pkg-config
1962 ranlib="ranlib"
1963 yasmexe="yasm"
1964
1965 nogas=":"
1966
1967 # machine
1968 arch_default=$(uname -m)
1969 cpu="generic"
1970
1971 # OS
1972 target_os_default=$(tolower $(uname -s))
1973 host_os=$target_os_default
1974
1975 # configurable options
1976 enable $LIBRARY_LIST $PROGRAM_LIST
1977
1978 enable asm
1979 enable debug
1980 enable doc
1981 enable optimizations
1982 enable safe_bitstream_reader
1983 enable static
1984 enable swscale_alpha
1985
1986 # By default, enable only those hwaccels that have no external dependencies.
1987 enable dxva2 vdpau
1988
1989 # build settings
1990 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1991 LIBPREF="lib"
1992 LIBSUF=".a"
1993 FULLNAME='$(NAME)$(BUILDSUF)'
1994 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1995 SLIBPREF="lib"
1996 SLIBSUF=".so"
1997 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1998 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1999 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2000 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2001 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2002 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2003
2004 asflags_filter=echo
2005 cflags_filter=echo
2006 ldflags_filter=echo
2007
2008 AS_C='-c'
2009 AS_O='-o $@'
2010 CC_C='-c'
2011 CC_E='-E -o $@'
2012 CC_O='-o $@'
2013 LD_O='-o $@'
2014 LD_LIB='-l%'
2015 LD_PATH='-L'
2016 HOSTCC_C='-c'
2017 HOSTCC_O='-o $@'
2018 HOSTLD_O='-o $@'
2019
2020 host_cflags='-O3 -g'
2021 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2022 host_libs='-lm'
2023 host_cflags_filter=echo
2024 host_ldflags_filter=echo
2025
2026 target_path='$(CURDIR)'
2027
2028 # since the object filename is not given with the -MM flag, the compiler
2029 # is only able to print the basename, and we must add the path ourselves
2030 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2031 DEPFLAGS='-MM'
2032
2033 # find source path
2034 if test -f configure; then
2035     source_path=.
2036 else
2037     source_path=$(cd $(dirname "$0"); pwd)
2038     echo "$source_path" | grep -q '[[:blank:]]' &&
2039         die "Out of tree builds are impossible with whitespace in source path."
2040     test -e "$source_path/config.h" &&
2041         die "Out of tree builds are impossible with config.h in source dir."
2042 fi
2043
2044 for v in "$@"; do
2045     r=${v#*=}
2046     l=${v%"$r"}
2047     r=$(sh_quote "$r")
2048     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2049 done
2050
2051 find_things(){
2052     thing=$1
2053     pattern=$2
2054     file=$source_path/$3
2055     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2056 }
2057
2058 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2059 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2060 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2061 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2062 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2063 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2064 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2065 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2066 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2067 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2068 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2069
2070 ALL_COMPONENTS="
2071     $BSF_LIST
2072     $DECODER_LIST
2073     $DEMUXER_LIST
2074     $ENCODER_LIST
2075     $FILTER_LIST
2076     $HWACCEL_LIST
2077     $INDEV_LIST
2078     $MUXER_LIST
2079     $OUTDEV_LIST
2080     $PARSER_LIST
2081     $PROTOCOL_LIST
2082 "
2083
2084 for n in $COMPONENT_LIST; do
2085     v=$(toupper ${n%s})_LIST
2086     eval enable \$$v
2087     eval ${n}_if_any="\$$v"
2088 done
2089
2090 enable $ARCH_EXT_LIST
2091
2092 die_unknown(){
2093     echo "Unknown option \"$1\"."
2094     echo "See $0 --help for available options."
2095     exit 1
2096 }
2097
2098 print_3_columns() {
2099     cat | tr ' ' '\n' | sort | pr -r -3 -t
2100 }
2101
2102 show_list() {
2103     suffix=_$1
2104     shift
2105     echo $* | sed s/$suffix//g | print_3_columns
2106     exit 0
2107 }
2108
2109 rand_list(){
2110     IFS=', '
2111     set -- $*
2112     unset IFS
2113     for thing; do
2114         comp=${thing%:*}
2115         prob=${thing#$comp}
2116         prob=${prob#:}
2117         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2118         echo "prob ${prob:-0.5}"
2119         printf '%s\n' $comp
2120     done
2121 }
2122
2123 do_random(){
2124     action=$1
2125     shift
2126     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2127     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2128 }
2129
2130 for opt do
2131     optval="${opt#*=}"
2132     case "$opt" in
2133         --extra-ldflags=*)
2134             add_ldflags $optval
2135         ;;
2136         --extra-libs=*)
2137             add_extralibs $optval
2138         ;;
2139         --disable-devices)
2140             disable $INDEV_LIST $OUTDEV_LIST
2141         ;;
2142         --enable-debug=*)
2143             debuglevel="$optval"
2144         ;;
2145         --disable-programs)
2146             disable $PROGRAM_LIST
2147         ;;
2148         --disable-everything)
2149             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2150         ;;
2151         --disable-all)
2152             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2153             disable $LIBRARY_LIST $PROGRAM_LIST doc
2154         ;;
2155         --enable-random|--disable-random)
2156             action=${opt%%-random}
2157             do_random ${action#--} $COMPONENT_LIST
2158         ;;
2159         --enable-random=*|--disable-random=*)
2160             action=${opt%%-random=*}
2161             do_random ${action#--} $optval
2162         ;;
2163         --enable-*=*|--disable-*=*)
2164             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2165             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2166             eval list=\$$(toupper $thing)_LIST
2167             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2168             $action $(filter "$name" $list)
2169         ;;
2170         --enable-?*|--disable-?*)
2171             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2172             if is_in $option $COMPONENT_LIST; then
2173                 test $action = disable && action=unset
2174                 eval $action \$$(toupper ${option%s})_LIST
2175             elif is_in $option $CMDLINE_SELECT; then
2176                 $action $option
2177             else
2178                 die_unknown $opt
2179             fi
2180         ;;
2181         --list-*)
2182             NAME="${opt#--list-}"
2183             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2184             NAME=${NAME%s}
2185             eval show_list $NAME \$$(toupper $NAME)_LIST
2186         ;;
2187         --help|-h) show_help
2188         ;;
2189         *)
2190             optname="${opt%%=*}"
2191             optname="${optname#--}"
2192             optname=$(echo "$optname" | sed 's/-/_/g')
2193             if is_in $optname $CMDLINE_SET; then
2194                 eval $optname='$optval'
2195             elif is_in $optname $CMDLINE_APPEND; then
2196                 append $optname "$optval"
2197             else
2198                 die_unknown $opt
2199             fi
2200         ;;
2201     esac
2202 done
2203
2204 disabled logging && logfile=/dev/null
2205
2206 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2207 set >> $logfile
2208
2209 test -n "$cross_prefix" && enable cross_compile
2210
2211 if enabled cross_compile; then
2212     test -n "$arch" && test -n "$target_os" ||
2213         die "Must specify target arch and OS when cross-compiling"
2214 fi
2215
2216 ar_default="${cross_prefix}${ar_default}"
2217 cc_default="${cross_prefix}${cc_default}"
2218 nm_default="${cross_prefix}${nm_default}"
2219 pkg_config_default="${cross_prefix}${pkg_config_default}"
2220 ranlib="${cross_prefix}${ranlib}"
2221
2222 sysinclude_default="${sysroot}/usr/include"
2223
2224 case "$toolchain" in
2225     clang-asan)
2226         cc_default="clang"
2227         add_cflags  -fsanitize=address
2228         add_ldflags -fsanitize=address
2229     ;;
2230     clang-tsan)
2231         cc_default="clang"
2232         add_cflags  -fsanitize=thread -pie
2233         add_ldflags -fsanitize=thread -pie
2234     ;;
2235     gcc-asan)
2236         cc_default="gcc"
2237         add_cflags  -fsanitize=address
2238         add_ldflags -fsanitize=address
2239     ;;
2240     gcc-tsan)
2241         cc_default="gcc"
2242         add_cflags  -fsanitize=thread -pie -fPIC
2243         add_ldflags -fsanitize=thread -pie -fPIC
2244     ;;
2245     valgrind-massif)
2246         target_exec_default="valgrind"
2247         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2248     ;;
2249     valgrind-memcheck)
2250         target_exec_default="valgrind"
2251         target_exec_args="--track-origins=yes --leak-check=full"
2252     ;;
2253     msvc)
2254         cc_default="c99wrap cl"
2255         ld_default="c99wrap link"
2256         nm_default="dumpbin -symbols"
2257         ar_default="lib"
2258         target_os_default="win32"
2259     ;;
2260     icl)
2261         cc_default="c99wrap -noconv icl"
2262         ld_default="c99wrap xilink"
2263         nm_default="dumpbin -symbols"
2264         ar_default="xilib"
2265         target_os_default="win32"
2266     ;;
2267     gcov)
2268         add_cflags  -fprofile-arcs -ftest-coverage
2269         add_ldflags -fprofile-arcs -ftest-coverage
2270     ;;
2271     ?*)
2272         die "Unknown toolchain $toolchain"
2273     ;;
2274 esac
2275
2276 set_default arch cc pkg_config sysinclude target_exec target_os
2277 enabled cross_compile || host_cc_default=$cc
2278 set_default host_cc
2279
2280 if ! $pkg_config --version >/dev/null 2>&1; then
2281     warn "$pkg_config not found, library detection may fail."
2282     pkg_config=false
2283 fi
2284
2285 exesuf() {
2286     case $1 in
2287         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2288     esac
2289 }
2290
2291 EXESUF=$(exesuf $target_os)
2292 HOSTEXESUF=$(exesuf $host_os)
2293
2294 # set temporary file name
2295 : ${TMPDIR:=$TEMPDIR}
2296 : ${TMPDIR:=$TMP}
2297 : ${TMPDIR:=/tmp}
2298
2299 if ! check_cmd mktemp -u XXXXXX; then
2300     # simple replacement for missing mktemp
2301     # NOT SAFE FOR GENERAL USE
2302     mktemp(){
2303         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2304     }
2305 fi
2306
2307 tmpfile(){
2308     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2309         (set -C; exec > $tmp) 2>/dev/null ||
2310         die "Unable to create temporary file in $TMPDIR."
2311     append TMPFILES $tmp
2312     eval $1=$tmp
2313 }
2314
2315 trap 'rm -f -- $TMPFILES' EXIT
2316
2317 tmpfile TMPASM .asm
2318 tmpfile TMPC   .c
2319 tmpfile TMPE   $EXESUF
2320 tmpfile TMPH   .h
2321 tmpfile TMPO   .o
2322 tmpfile TMPS   .S
2323 tmpfile TMPSH  .sh
2324 tmpfile TMPV   .ver
2325
2326 unset -f mktemp
2327
2328 chmod +x $TMPE
2329
2330 # make sure we can execute files in $TMPDIR
2331 cat > $TMPSH 2>> $logfile <<EOF
2332 #! /bin/sh
2333 EOF
2334 chmod +x $TMPSH >> $logfile 2>&1
2335 if ! $TMPSH >> $logfile 2>&1; then
2336     cat <<EOF
2337 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2338 variable to another directory and make sure that it is not mounted noexec.
2339 EOF
2340     die "Sanity test failed."
2341 fi
2342
2343 ccc_flags(){
2344     for flag; do
2345         case $flag in
2346             -std=c99)           echo -c99                       ;;
2347             -mcpu=*)            echo -arch ${flag#*=}           ;;
2348             -mieee)             echo -ieee                      ;;
2349             -O*|-fast)          echo $flag                      ;;
2350             -fno-math-errno)    echo -assume nomath_errno       ;;
2351             -g)                 echo -g3                        ;;
2352             -Wall)              echo -msg_enable level2         ;;
2353             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2354             -Wl,*)              echo $flag                      ;;
2355             -f*|-W*)                                            ;;
2356             *)                  echo $flag                      ;;
2357         esac
2358    done
2359 }
2360
2361 msvc_common_flags(){
2362     for flag; do
2363         case $flag in
2364             # In addition to specifying certain flags under the compiler
2365             # specific filters, they must be specified here as well or else the
2366             # generic catch all at the bottom will print the original flag.
2367             -Wall)                ;;
2368             -std=c99)             ;;
2369             # Common flags
2370             -fomit-frame-pointer) ;;
2371             -g)                   echo -Z7 ;;
2372             -fno-math-errno)      ;;
2373             -fno-common)          ;;
2374             -fno-signed-zeros)    ;;
2375             -fPIC)                ;;
2376             -mthumb)              ;;
2377             -march=*)             ;;
2378             -lz)                  echo zlib.lib ;;
2379             -lavifil32)           echo vfw32.lib ;;
2380             -lavicap32)           echo vfw32.lib user32.lib ;;
2381             -l*)                  echo ${flag#-l}.lib ;;
2382             *)                    echo $flag ;;
2383         esac
2384     done
2385 }
2386
2387 msvc_flags(){
2388     msvc_common_flags "$@"
2389     for flag; do
2390         case $flag in
2391             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2392                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2393                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2394                                        -wd4996 -wd4273 ;;
2395         esac
2396     done
2397 }
2398
2399 icl_flags(){
2400     msvc_common_flags "$@"
2401     for flag; do
2402         case $flag in
2403             # Despite what Intel's documentation says -Wall, which is supported
2404             # on Windows, does enable remarks so disable them here.
2405             -Wall)                echo $flag -Qdiag-disable:remark ;;
2406             -std=c99)             echo -Qstd=c99 ;;
2407         esac
2408     done
2409 }
2410
2411 pgi_flags(){
2412     for flag; do
2413         case $flag in
2414             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2415             -fomit-frame-pointer) echo -Mnoframe ;;
2416             -g)                   echo -gopt ;;
2417             *)                    echo $flag ;;
2418         esac
2419     done
2420 }
2421
2422 suncc_flags(){
2423     for flag; do
2424         case $flag in
2425             -march=*|-mcpu=*)
2426                 case "${flag#*=}" in
2427                     native)                   echo -xtarget=native       ;;
2428                     v9|niagara)               echo -xarch=sparc          ;;
2429                     ultrasparc)               echo -xarch=sparcvis       ;;
2430                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2431                     i586|pentium)             echo -xchip=pentium        ;;
2432                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2433                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2434                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2435                     pentium4*)          echo -xtarget=pentium4           ;;
2436                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2437                     *-sse3)             echo -xarch=sse3                 ;;
2438                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2439                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2440                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2441                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2442                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2443                     k8|opteron|athlon64|athlon-fx)
2444                                                echo -xarch=sse2a         ;;
2445                     athlon*)                   echo -xarch=pentium_proa  ;;
2446                 esac
2447                 ;;
2448             -std=c99)             echo -xc99              ;;
2449             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2450             -fPIC)                echo -KPIC -xcode=pic32 ;;
2451             -W*,*)                echo $flag              ;;
2452             -f*-*|-W*|-mimpure-text)                      ;;
2453             -shared)              echo -G                 ;;
2454             *)                    echo $flag              ;;
2455         esac
2456     done
2457 }
2458
2459 tms470_flags(){
2460     for flag; do
2461         case $flag in
2462             -march=*|-mcpu=*)
2463                 case "${flag#*=}" in
2464                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2465                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2466                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2467                     armv6*|arm11*)          echo -mv=6   ;;
2468                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2469                                             echo -mv=5e  ;;
2470                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2471                 esac
2472                 ;;
2473             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2474             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2475             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2476             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2477             -msoft-float)   echo --float_support=vfplib       ;;
2478             -O[0-3]|-mf=*)  echo $flag                        ;;
2479             -g)             echo -g -mn                       ;;
2480             -pds=*)         echo $flag                        ;;
2481             -D*|-I*)        echo $flag                        ;;
2482             --gcc|--abi=*)  echo $flag                        ;;
2483             -me)            echo $flag                        ;;
2484         esac
2485     done
2486 }
2487
2488 probe_cc(){
2489     pfx=$1
2490     _cc=$2
2491
2492     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2493     unset _ld_o _ldflags _ld_lib _ld_path
2494     unset _depflags _DEPCMD _DEPFLAGS
2495     _flags_filter=echo
2496
2497     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2498         _type=llvm_gcc
2499         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2500         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2501         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2502         _cflags_speed='-O3'
2503         _cflags_size='-Os'
2504     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2505         _type=gcc
2506         gcc_version=$($_cc --version | head -n1)
2507         gcc_basever=$($_cc -dumpversion)
2508         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2509         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2510         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2511         if ! $_cc -dumpversion | grep -q '^2\.'; then
2512             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2513         fi
2514         _cflags_speed='-O3'
2515         _cflags_size='-Os'
2516     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2517         _type=icc
2518         _ident=$($_cc --version | head -n1)
2519         _depflags='-MMD'
2520         _cflags_speed='-O3'
2521         _cflags_size='-Os'
2522         _cflags_noopt='-O1'
2523     elif $_cc -v 2>&1 | grep -q xlc; then
2524         _type=xlc
2525         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2526         _cflags_speed='-O5'
2527         _cflags_size='-O5 -qcompact'
2528     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2529         _type=ccc
2530         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2531         _DEPFLAGS='-M'
2532         _cflags_speed='-fast'
2533         _cflags_size='-O1'
2534         _flags_filter=ccc_flags
2535     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2536         test -d "$sysroot" || die "No valid sysroot specified."
2537         _type=armcc
2538         _ident=$($_cc --vsn | head -n1)
2539         armcc_conf="$PWD/armcc.conf"
2540         $_cc --arm_linux_configure                 \
2541              --arm_linux_config_file="$armcc_conf" \
2542              --configure_sysroot="$sysroot"        \
2543              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2544              die "Error creating armcc configuration file."
2545         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2546         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2547         as_default="${cross_prefix}gcc"
2548         _depflags='-MMD'
2549         _cflags_speed='-O3'
2550         _cflags_size='-Os'
2551     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2552         _type=tms470
2553         _ident=$($_cc -version | head -n1 | tr -s ' ')
2554         _flags='--gcc --abi=eabi -me'
2555         _cc_e='-ppl -fe=$@'
2556         _cc_o='-fe=$@'
2557         _depflags='-ppa -ppd=$(@:.o=.d)'
2558         _cflags_speed='-O3 -mf=5'
2559         _cflags_size='-O3 -mf=2'
2560         _flags_filter=tms470_flags
2561     elif $_cc -v 2>&1 | grep -q clang; then
2562         _type=clang
2563         _ident=$($_cc --version | head -n1)
2564         _depflags='-MMD'
2565         _cflags_speed='-O3'
2566         _cflags_size='-Os'
2567     elif $_cc -V 2>&1 | grep -q Sun; then
2568         _type=suncc
2569         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2570         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2571         _DEPFLAGS='-xM1 -xc99'
2572         _ldflags='-std=c99'
2573         _cflags_speed='-O5'
2574         _cflags_size='-O5 -xspace'
2575         _flags_filter=suncc_flags
2576     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2577         _type=pathscale
2578         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2579         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2580         _cflags_speed='-O2'
2581         _cflags_size='-Os'
2582         _flags_filter='filter_out -Wdisabled-optimization'
2583     elif $_cc -v 2>&1 | grep -q Open64; then
2584         _type=open64
2585         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2586         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2587         _cflags_speed='-O2'
2588         _cflags_size='-Os'
2589         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2590     elif $_cc -V 2>&1 | grep -q Portland; then
2591         _type=pgi
2592         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2593         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2594         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2595         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2596         _cflags_noopt="-O1"
2597         _flags_filter=pgi_flags
2598     elif $_cc 2>&1 | grep -q Microsoft; then
2599         _type=msvc
2600         _ident=$($cc 2>&1 | head -n1)
2601         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2602         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2603         _cflags_speed="-O2"
2604         _cflags_size="-O1"
2605         # Nonstandard output options, to avoid msys path conversion issues.
2606         # Relies on wrapper to remap it.
2607         if $_cc 2>&1 | grep -q Linker; then
2608             _ld_o='-out $@'
2609         else
2610             _ld_o='-Fe$@'
2611         fi
2612         _cc_o='-Fo $@'
2613         _cc_e='-P -Fi $@'
2614         _flags_filter=msvc_flags
2615         _ld_lib='lib%.a'
2616         _ld_path='-libpath:'
2617         _flags='-nologo'
2618         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2619         if [ $pfx = hostcc ]; then
2620             append _cflags -Dsnprintf=_snprintf
2621         fi
2622     elif $_cc 2>&1 | grep -q Intel; then
2623         _type=icl
2624         _ident=$($cc 2>&1 | head -n1)
2625         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2626         # Not only is O3 broken on 13.x+ but it is slower on all previous
2627         # versions (tested) as well.
2628         _cflags_speed="-O2"
2629         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2630         # Nonstandard output options, to avoid msys path conversion issues.
2631         # Relies on wrapper to remap it.
2632         if $_cc 2>&1 | grep -q Linker; then
2633             _ld_o='-out $@'
2634         else
2635             _ld_o='-Fe$@'
2636         fi
2637         _cc_o='-Fo $@'
2638         _cc_e='-P'
2639         _flags_filter=icl_flags
2640         _ld_lib='lib%.a'
2641         _ld_path='-libpath:'
2642         # -Qdiag-error to make icl error when seeing certain unknown arguments
2643         _flags='-nologo -Qdiag-error:4044,10157'
2644         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2645         # with MSVC which enables it by default.
2646         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2647         if [ $pfx = hostcc ]; then
2648             append _cflags -Dsnprintf=_snprintf
2649         fi
2650     fi
2651
2652     eval ${pfx}_type=\$_type
2653     eval ${pfx}_ident=\$_ident
2654 }
2655
2656 set_ccvars(){
2657     eval ${1}_C=\${_cc_c-\${${1}_C}}
2658     eval ${1}_E=\${_cc_e-\${${1}_E}}
2659     eval ${1}_O=\${_cc_o-\${${1}_O}}
2660
2661     if [ -n "$_depflags" ]; then
2662         eval ${1}_DEPFLAGS=\$_depflags
2663     else
2664         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2665         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2666         eval DEP${1}FLAGS=\$_flags
2667     fi
2668 }
2669
2670 probe_cc cc "$cc"
2671 cflags_filter=$_flags_filter
2672 cflags_speed=$_cflags_speed
2673 cflags_size=$_cflags_size
2674 cflags_noopt=$_cflags_noopt
2675 add_cflags $_flags $_cflags
2676 cc_ldflags=$_ldflags
2677 set_ccvars CC
2678
2679 probe_cc hostcc "$host_cc"
2680 host_cflags_filter=$_flags_filter
2681 add_host_cflags  $_flags $_cflags
2682 set_ccvars HOSTCC
2683
2684 test -n "$cc_type" && enable $cc_type ||
2685     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2686
2687 : ${as_default:=$cc}
2688 : ${dep_cc_default:=$cc}
2689 : ${ld_default:=$cc}
2690 : ${host_ld_default:=$host_cc}
2691 set_default ar as dep_cc ld host_ld
2692
2693 probe_cc as "$as"
2694 asflags_filter=$_flags_filter
2695 add_asflags $_flags $_cflags
2696 set_ccvars AS
2697
2698 probe_cc ld "$ld"
2699 ldflags_filter=$_flags_filter
2700 add_ldflags $_flags $_ldflags
2701 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2702 LD_O=${_ld_o-$LD_O}
2703 LD_LIB=${_ld_lib-$LD_LIB}
2704 LD_PATH=${_ld_path-$LD_PATH}
2705
2706 probe_cc hostld "$host_ld"
2707 host_ldflags_filter=$_flags_filter
2708 add_host_ldflags $_flags $_ldflags
2709 HOSTLD_O=${_ld_o-$HOSTLD_O}
2710
2711 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2712     probe_cc depcc "$dep_cc"
2713     CCDEP=${_DEPCMD:-$DEPCMD}
2714     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2715     DEPCCFLAGS=$_flags
2716 fi
2717
2718 if $ar 2>&1 | grep -q Microsoft; then
2719     arflags="-nologo"
2720     ar_o='-out:$@'
2721 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2722     arflags="rq"
2723     ar_o='$@'
2724 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2725     arflags='-Xany -r -c'
2726     ar_o='$@'
2727 else
2728     arflags="rc"
2729     ar_o='$@'
2730 fi
2731
2732 add_cflags $extra_cflags
2733 add_asflags $extra_cflags
2734
2735 if test -n "$sysroot"; then
2736     case "$cc_type" in
2737         gcc|llvm_gcc|clang)
2738             add_cppflags --sysroot="$sysroot"
2739             add_ldflags --sysroot="$sysroot"
2740         ;;
2741         tms470)
2742             add_cppflags -I"$sysinclude"
2743             add_ldflags  --sysroot="$sysroot"
2744         ;;
2745     esac
2746 fi
2747
2748 if test "$cpu" = host; then
2749     enabled cross_compile &&
2750         die "--cpu=host makes no sense when cross-compiling."
2751
2752     case "$cc_type" in
2753         gcc|llvm_gcc)
2754             check_native(){
2755                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2756                 sed -n "/cc1.*$1=/{
2757                             s/.*$1=\\([^ ]*\\).*/\\1/
2758                             p
2759                             q
2760                         }" $TMPE
2761             }
2762             cpu=$(check_native -march || check_native -mcpu)
2763         ;;
2764     esac
2765
2766     test "${cpu:-host}" = host &&
2767         die "--cpu=host not supported with compiler $cc"
2768 fi
2769
2770 # Deal with common $arch aliases
2771 case "$arch" in
2772     aarch64|arm64)
2773         arch="aarch64"
2774     ;;
2775     arm*)
2776         arch="arm"
2777     ;;
2778     mips*|IP*)
2779         arch="mips"
2780     ;;
2781     parisc*|hppa*)
2782         arch="parisc"
2783     ;;
2784     "Power Macintosh"|ppc*|powerpc*)
2785         arch="ppc"
2786     ;;
2787     s390|s390x)
2788         arch="s390"
2789     ;;
2790     sh4|sh)
2791         arch="sh4"
2792     ;;
2793     sun4u|sparc*)
2794         arch="sparc"
2795     ;;
2796     tilegx|tile-gx)
2797         arch="tilegx"
2798     ;;
2799     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2800         arch="x86"
2801     ;;
2802 esac
2803
2804 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2805 enable $arch
2806
2807 # Add processor-specific flags
2808 if enabled aarch64; then
2809
2810     case $cpu in
2811         armv*)
2812             cpuflags="-march=$cpu"
2813         ;;
2814         *)
2815             cpuflags="-mcpu=$cpu"
2816         ;;
2817     esac
2818
2819 elif enabled alpha; then
2820
2821     cpuflags="-mcpu=$cpu"
2822
2823 elif enabled arm; then
2824
2825     check_arm_arch() {
2826         check_cpp_condition stddef.h \
2827             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2828             $cpuflags
2829     }
2830
2831     probe_arm_arch() {
2832         if   check_arm_arch 4;        then echo armv4;
2833         elif check_arm_arch 4T;       then echo armv4t;
2834         elif check_arm_arch 5;        then echo armv5;
2835         elif check_arm_arch 5E;       then echo armv5e;
2836         elif check_arm_arch 5T;       then echo armv5t;
2837         elif check_arm_arch 5TE;      then echo armv5te;
2838         elif check_arm_arch 5TEJ;     then echo armv5te;
2839         elif check_arm_arch 6;        then echo armv6;
2840         elif check_arm_arch 6J;       then echo armv6j;
2841         elif check_arm_arch 6K;       then echo armv6k;
2842         elif check_arm_arch 6Z;       then echo armv6z;
2843         elif check_arm_arch 6ZK;      then echo armv6zk;
2844         elif check_arm_arch 6T2;      then echo armv6t2;
2845         elif check_arm_arch 7;        then echo armv7;
2846         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2847         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2848         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2849         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2850         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2851         fi
2852     }
2853
2854     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2855
2856     case $cpu in
2857         armv*)
2858             cpuflags="-march=$cpu"
2859             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2860         ;;
2861         *)
2862             cpuflags="-mcpu=$cpu"
2863             case $cpu in
2864                 cortex-a*)                               subarch=armv7a  ;;
2865                 cortex-r*)                               subarch=armv7r  ;;
2866                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2867                 arm11*)                                  subarch=armv6   ;;
2868                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2869                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2870                 *)                             subarch=$(probe_arm_arch) ;;
2871             esac
2872         ;;
2873     esac
2874
2875     case "$subarch" in
2876         armv5t*)    enable fast_clz                ;;
2877         armv[6-8]*) enable fast_clz fast_unaligned ;;
2878     esac
2879
2880 elif enabled avr32; then
2881
2882     case $cpu in
2883         ap7[02]0[0-2])
2884             subarch="avr32_ap"
2885             cpuflags="-mpart=$cpu"
2886         ;;
2887         ap)
2888             subarch="avr32_ap"
2889             cpuflags="-march=$cpu"
2890         ;;
2891         uc3[ab]*)
2892             subarch="avr32_uc"
2893             cpuflags="-mcpu=$cpu"
2894         ;;
2895         uc)
2896             subarch="avr32_uc"
2897             cpuflags="-march=$cpu"
2898         ;;
2899     esac
2900
2901 elif enabled bfin; then
2902
2903     cpuflags="-mcpu=$cpu"
2904
2905 elif enabled mips; then
2906
2907     cpuflags="-march=$cpu"
2908
2909 elif enabled ppc; then
2910
2911     case $(tolower $cpu) in
2912         601|ppc601|powerpc601)
2913             cpuflags="-mcpu=601"
2914             disable altivec
2915         ;;
2916         603*|ppc603*|powerpc603*)
2917             cpuflags="-mcpu=603"
2918             disable altivec
2919         ;;
2920         604*|ppc604*|powerpc604*)
2921             cpuflags="-mcpu=604"
2922             disable altivec
2923         ;;
2924         g3|75*|ppc75*|powerpc75*)
2925             cpuflags="-mcpu=750"
2926             disable altivec
2927         ;;
2928         g4|745*|ppc745*|powerpc745*)
2929             cpuflags="-mcpu=7450"
2930         ;;
2931         74*|ppc74*|powerpc74*)
2932             cpuflags="-mcpu=7400"
2933         ;;
2934         g5|970|ppc970|powerpc970)
2935             cpuflags="-mcpu=970"
2936         ;;
2937         power[3-7]*)
2938             cpuflags="-mcpu=$cpu"
2939         ;;
2940         cell)
2941             cpuflags="-mcpu=cell"
2942             enable ldbrx
2943         ;;
2944         e500mc)
2945             cpuflags="-mcpu=e500mc"
2946             disable altivec
2947         ;;
2948         e500v2)
2949             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2950             disable altivec
2951         ;;
2952         e500)
2953             cpuflags="-mcpu=8540 -mhard-float"
2954             disable altivec
2955         ;;
2956     esac
2957
2958 elif enabled sparc; then
2959
2960     case $cpu in
2961         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2962             cpuflags="-mcpu=$cpu"
2963             disable vis
2964         ;;
2965         ultrasparc*|niagara[234])
2966             cpuflags="-mcpu=$cpu"
2967         ;;
2968     esac
2969
2970 elif enabled x86; then
2971
2972     case $cpu in
2973         i[345]86|pentium)
2974             cpuflags="-march=$cpu"
2975             disable mmx
2976         ;;
2977         # targets that do NOT support nopl and conditional mov (cmov)
2978         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2979             cpuflags="-march=$cpu"
2980             disable i686
2981         ;;
2982         # targets that do support nopl and conditional mov (cmov)
2983         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2984             cpuflags="-march=$cpu"
2985             enable i686
2986             enable fast_cmov
2987         ;;
2988         # targets that do support conditional mov but on which it's slow
2989         pentium4|pentium4m|prescott|nocona)
2990             cpuflags="-march=$cpu"
2991             enable i686
2992             disable fast_cmov
2993         ;;
2994     esac
2995
2996 fi
2997
2998 if [ "$cpu" != generic ]; then
2999     add_cflags  $cpuflags
3000     add_asflags $cpuflags
3001 fi
3002
3003 # compiler sanity check
3004 check_exec <<EOF
3005 int main(void){ return 0; }
3006 EOF
3007 if test "$?" != 0; then
3008     echo "$cc is unable to create an executable file."
3009     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3010         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3011         echo "Only do this if you know what cross compiling means."
3012     fi
3013     die "C compiler test failed."
3014 fi
3015
3016 add_cppflags -D_ISOC99_SOURCE
3017 check_cflags -std=c99
3018 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3019 #include <stdlib.h>
3020 EOF
3021 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3022 #include <stdlib.h>
3023 EOF
3024
3025 check_host_cflags -std=c99
3026 check_host_cflags -Wall
3027
3028 check_64bit(){
3029     arch32=$1
3030     arch64=$2
3031     expr=$3
3032     check_code cc "" "int test[2*($expr) - 1]" &&
3033         subarch=$arch64 || subarch=$arch32
3034 }
3035
3036 case "$arch" in
3037     aarch64|alpha|ia64)
3038         spic=$shared
3039     ;;
3040     mips)
3041         check_64bit mips mips64 '_MIPS_SIM > 1'
3042         spic=$shared
3043     ;;
3044     parisc)
3045         check_64bit parisc parisc64 'sizeof(void *) > 4'
3046         spic=$shared
3047     ;;
3048     ppc)
3049         check_64bit ppc ppc64 'sizeof(void *) > 4'
3050         spic=$shared
3051     ;;
3052     sparc)
3053         check_64bit sparc sparc64 'sizeof(void *) > 4'
3054         spic=$shared
3055     ;;
3056     x86)
3057         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3058         if test "$subarch" = "x86_64"; then
3059             spic=$shared
3060         fi
3061     ;;
3062 esac
3063
3064 enable $subarch
3065 enabled spic && enable_weak pic
3066
3067 # OS specific
3068 case $target_os in
3069     aix)
3070         SHFLAGS=-shared
3071         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3072         enabled shared && add_ldflags -Wl,-brtl
3073         ;;
3074     haiku)
3075         prefix_default="/boot/common"
3076         network_extralibs="-lnetwork"
3077         host_libs=
3078         ;;
3079     sunos)
3080         SHFLAGS='-shared -Wl,-h,$$(@F)'
3081         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3082         network_extralibs="-lsocket -lnsl"
3083         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3084         # When using suncc to build, the Solaris linker will mark
3085         # an executable with each instruction set encountered by
3086         # the Solaris assembler.  As our libraries contain their own
3087         # guards for processor-specific code, instead suppress
3088         # generation of the HWCAPS ELF section on Solaris x86 only.
3089         enabled_all suncc x86 &&
3090             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3091             add_ldflags -Wl,-M,mapfile
3092         nm_default='nm -P -g'
3093         ;;
3094     netbsd)
3095         disable symver
3096         oss_indev_extralibs="-lossaudio"
3097         oss_outdev_extralibs="-lossaudio"
3098         ;;
3099     openbsd|bitrig)
3100         disable symver
3101         SHFLAGS='-shared'
3102         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3103         SLIB_INSTALL_LINKS=
3104         oss_indev_extralibs="-lossaudio"
3105         oss_outdev_extralibs="-lossaudio"
3106         ;;
3107     dragonfly)
3108         disable symver
3109         ;;
3110     freebsd)
3111         ;;
3112     bsd/os)
3113         add_extralibs -lpoll -lgnugetopt
3114         ;;
3115     darwin)
3116         gas="gas-preprocessor.pl $cc"
3117         enabled ppc && add_asflags -force_cpusubtype_ALL
3118         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3119         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3120         add_ldflags -Wl,-dynamic,-search_paths_first
3121         SLIBSUF=".dylib"
3122         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3123         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3124         objformat="macho"
3125         enabled x86_64 && objformat="macho64"
3126         enabled_any pic shared ||
3127             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3128         ;;
3129     mingw32*)
3130         if test $target_os = "mingw32ce"; then
3131             disable network
3132         else
3133             target_os=mingw32
3134         fi
3135         LIBTARGET=i386
3136         if enabled x86_64; then
3137             LIBTARGET="i386:x86-64"
3138         elif enabled arm; then
3139             LIBTARGET=arm-wince
3140         fi
3141         check_ldflags -Wl,--nxcompat
3142         check_ldflags -Wl,--dynamicbase
3143         shlibdir_default="$bindir_default"
3144         SLIBPREF=""
3145         SLIBSUF=".dll"
3146         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3147         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3148         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3149         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3150         SLIB_INSTALL_LINKS=
3151         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3152         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3153         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3154         objformat="win32"
3155         dlltool="${cross_prefix}dlltool"
3156         ranlib=:
3157         enable dos_paths
3158         ;;
3159     win32|win64)
3160         if enabled shared; then
3161             # Link to the import library instead of the normal static library
3162             # for shared libs.
3163             LD_LIB='%.lib'
3164             # Cannot build shared and static libs at the same time with MSVC.
3165             disable static
3166         fi
3167         shlibdir_default="$bindir_default"
3168         SLIBPREF=""
3169         SLIBSUF=".dll"
3170         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3171         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3172         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3173         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3174         SLIB_INSTALL_LINKS=
3175         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3176         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3177         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3178         objformat="win32"
3179         ranlib=:
3180         enable dos_paths
3181         ;;
3182     cygwin*)
3183         target_os=cygwin
3184         shlibdir_default="$bindir_default"
3185         SLIBPREF="cyg"
3186         SLIBSUF=".dll"
3187         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3188         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3189         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3190         SLIB_INSTALL_LINKS=
3191         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3192         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3193         objformat="win32"
3194         enable dos_paths
3195         ;;
3196     *-dos|freedos|opendos)
3197         network_extralibs="-lsocket"
3198         objformat="coff"
3199         enable dos_paths
3200         add_cppflags -U__STRICT_ANSI__
3201         ;;
3202     linux)
3203         enable dv1394
3204         ;;
3205     irix*)
3206         target_os=irix
3207         ranlib="echo ignoring ranlib"
3208         ;;
3209     os/2*)
3210         ln_s="cp -f"
3211         objformat="aout"
3212         add_cppflags -D_GNU_SOURCE
3213         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3214         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3215         LIBSUF="_s.a"
3216         SLIBPREF=""
3217         SLIBSUF=".dll"
3218         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3219         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3220         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3221             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3222             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3223             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3224             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3225             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3226         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3227             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3228         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3229         enable dos_paths
3230         ;;
3231     gnu/kfreebsd)
3232         add_cppflags -D_BSD_SOURCE
3233         ;;
3234     gnu)
3235         ;;
3236     qnx)
3237         add_cppflags -D_QNX_SOURCE
3238         network_extralibs="-lsocket"
3239         ;;
3240     symbian)
3241         SLIBSUF=".dll"
3242         enable dos_paths
3243         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3244         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3245         add_ldflags -Wl,--target1-abs,--no-undefined \
3246                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3247                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3248         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3249                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3250                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3251         ;;
3252     osf1)
3253         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3254         ;;
3255     minix)
3256         ;;
3257     plan9)
3258         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3259                      -D_REENTRANT_SOURCE        \
3260                      -D_RESEARCH_SOURCE         \
3261                      -DFD_SETSIZE=96            \
3262                      -DHAVE_SOCK_OPTS
3263         add_compat strtod.o strtod=avpriv_strtod
3264         network_extralibs='-lbsd'
3265         exeobjs=compat/plan9/main.o
3266         disable avserver
3267         cp_f='cp'
3268         ;;
3269     none)
3270         ;;
3271     *)
3272         die "Unknown OS '$target_os'."
3273         ;;
3274 esac
3275
3276 # determine libc flavour
3277
3278 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3279 if check_cpp_condition features.h "defined __UCLIBC__"; then
3280     libc_type=uclibc
3281     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3282 elif check_cpp_condition features.h "defined __GLIBC__"; then
3283     libc_type=glibc
3284     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3285 # MinGW headers can be installed on Cygwin, so check for newlib first.
3286 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3287     libc_type=newlib
3288     add_cppflags -U__STRICT_ANSI__
3289 elif check_header _mingw.h; then
3290     libc_type=mingw
3291     check_cpp_condition _mingw.h \
3292         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3293             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3294         die "ERROR: MinGW runtime version must be >= 3.15."
3295     add_cppflags -U__STRICT_ANSI__
3296 elif check_func_headers stdlib.h _get_doserrno; then
3297     libc_type=msvcrt
3298     add_compat strtod.o strtod=avpriv_strtod
3299     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3300                                  _snprintf=avpriv_snprintf  \
3301                                  vsnprintf=avpriv_vsnprintf
3302     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3303     # 0x601 by default unless something else is set by the user.
3304     # This can easily lead to us detecting functions only present
3305     # in such new versions and producing binaries requiring windows 7.0.
3306     # Therefore explicitly set the default to XP unless the user has
3307     # set something else on the command line.
3308     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3309 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3310     libc_type=klibc
3311 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3312     libc_type=bionic
3313     add_compat strtod.o strtod=avpriv_strtod
3314 fi
3315
3316 test -n "$libc_type" && enable $libc_type
3317
3318 # hacks for compiler/libc/os combinations
3319
3320 if enabled_all tms470 glibc; then
3321     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3322     add_cppflags -D__USER_LABEL_PREFIX__=
3323     add_cppflags -D__builtin_memset=memset
3324     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3325     add_cflags   -pds=48    # incompatible redefinition of macro
3326 fi
3327
3328 if enabled_all ccc glibc; then
3329     add_ldflags -Wl,-z,now  # calls to libots crash without this
3330 fi
3331
3332 esc(){
3333     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3334 }
3335
3336 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3337
3338 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3339
3340 set_default $PATHS_LIST
3341 set_default nm
3342
3343 # we need to build at least one lib type
3344 if ! enabled_any static shared; then
3345     cat <<EOF
3346 At least one library type must be built.
3347 Specify --enable-static to build the static libraries or --enable-shared to
3348 build the shared libraries as well. To only build the shared libraries specify
3349 --disable-static in addition to --enable-shared.
3350 EOF
3351     exit 1;
3352 fi
3353
3354 die_license_disabled() {
3355     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3356 }
3357
3358 die_license_disabled gpl libcdio
3359 die_license_disabled gpl libx264
3360 die_license_disabled gpl libxavs
3361 die_license_disabled gpl libxvid
3362 die_license_disabled gpl x11grab
3363
3364 die_license_disabled nonfree libfaac
3365 die_license_disabled nonfree libfdk_aac
3366 die_license_disabled nonfree openssl
3367
3368 die_license_disabled version3 libopencore_amrnb
3369 die_license_disabled version3 libopencore_amrwb
3370 die_license_disabled version3 libvo_aacenc
3371 die_license_disabled version3 libvo_amrwbenc
3372
3373 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3374
3375 disabled optimizations || check_cflags -fomit-frame-pointer
3376
3377 enable_weak_pic() {
3378     disabled pic && return
3379     enable pic
3380     add_cppflags -DPIC
3381     case "$target_os" in
3382     mingw*|cygwin*)
3383         ;;
3384     *)
3385         add_cflags -fPIC
3386         ;;
3387     esac
3388     add_asflags  -fPIC
3389 }
3390
3391 enabled pic && enable_weak_pic
3392
3393 check_cc <<EOF || die "Symbol mangling check failed."
3394 int ff_extern;
3395 EOF
3396 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3397 extern_prefix=${sym%%ff_extern*}
3398
3399 check_cc <<EOF && enable_weak inline_asm
3400 void foo(void) { __asm__ volatile ("" ::); }
3401 EOF
3402
3403 _restrict=
3404 for restrict_keyword in restrict __restrict__ __restrict; do
3405     check_cc <<EOF && _restrict=$restrict_keyword && break
3406 void foo(char * $restrict_keyword p);
3407 EOF
3408 done
3409
3410 check_cc <<EOF && enable pragma_deprecated
3411 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3412 EOF
3413
3414 check_cc <<EOF && enable attribute_packed
3415 struct { int x; } __attribute__((packed)) x;
3416 EOF
3417
3418 check_cc <<EOF && enable attribute_may_alias
3419 union { int x; } __attribute__((may_alias)) x;
3420 EOF
3421
3422 check_cc <<EOF || die "endian test failed"
3423 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3424 EOF
3425 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3426
3427 check_inline_asm inline_asm_labels '"1:\n"'
3428
3429 if enabled alpha; then
3430
3431     check_cflags -mieee
3432
3433 elif enabled arm; then
3434
3435     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3436     enabled thumb && check_cflags -mthumb || check_cflags -marm
3437     nogas=die
3438
3439     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3440         enable vfp_args
3441     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3442         case "${cross_prefix:-$cc}" in
3443             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3444             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3445 __asm__ (".eabi_attribute 28, 1");
3446 int main(void) { return 0; }
3447 EOF
3448         esac
3449         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3450     fi
3451
3452     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3453     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3454     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3455     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3456     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3457     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3458
3459     [ $target_os = linux ] ||
3460         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3461             $ARCH_EXT_LIST_ARM
3462
3463     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3464     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3465
3466     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3467
3468 elif enabled mips; then
3469
3470     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3471
3472 elif enabled parisc; then
3473
3474     if enabled gcc; then
3475         case $($cc -dumpversion) in
3476             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3477         esac
3478     fi
3479
3480 elif enabled ppc; then
3481
3482     enable local_aligned_8 local_aligned_16
3483
3484     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3485     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3486     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3487     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3488
3489     # AltiVec flags: The FSF version of GCC differs from the Apple version
3490     if enabled altivec; then
3491         nogas=warn
3492         check_cflags -maltivec -mabi=altivec &&
3493         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3494         check_cflags -faltivec
3495
3496         # check if our compiler supports Motorola AltiVec C API
3497         check_cc <<EOF || disable altivec
3498 $inc_altivec_h
3499 int main(void) {
3500     vector signed int v1 = (vector signed int) { 0 };
3501     vector signed int v2 = (vector signed int) { 1 };
3502     v1 = vec_add(v1, v2);
3503     return 0;
3504 }
3505 EOF
3506
3507         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3508     fi
3509
3510 elif enabled sparc; then
3511
3512     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3513
3514 elif enabled x86; then
3515
3516     check_builtin rdtsc    intrin.h   "__rdtsc()"
3517     check_builtin mm_empty mmintrin.h "_mm_empty()"
3518
3519     enable local_aligned_8 local_aligned_16
3520
3521     # check whether EBP is available on x86
3522     # As 'i' is stored on the stack, this program will crash
3523     # if the base pointer is used to access it because the
3524     # base pointer is cleared in the inline assembly code.
3525     check_exec_crash <<EOF && enable ebp_available
3526 volatile int i=0;
3527 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3528 return i;
3529 EOF
3530
3531     # check whether EBX is available on x86
3532     check_inline_asm ebx_available '""::"b"(0)' &&
3533         check_inline_asm ebx_available '"":::"%ebx"'
3534
3535     # check whether xmm clobbers are supported
3536     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3537
3538     # check whether binutils is new enough to compile SSSE3/MMXEXT
3539     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3540     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3541
3542     if ! disabled_any asm mmx yasm; then
3543         if check_cmd $yasmexe --version; then
3544             enabled x86_64 && yasm_extra="-m amd64"
3545             yasm_debug="-g dwarf2"
3546         elif check_cmd nasm -v; then
3547             yasmexe=nasm
3548             yasm_debug="-g -F dwarf"
3549             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3550         fi
3551
3552         YASMFLAGS="-f $objformat $yasm_extra"
3553         enabled pic               && append YASMFLAGS "-DPIC"
3554         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3555         case "$objformat" in
3556             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3557         esac
3558
3559         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3560             die "yasm not found, use --disable-yasm for a crippled build"
3561         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3562         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3563     fi
3564
3565     case "$cpu" in
3566         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3567             disable fast_clz
3568         ;;
3569     esac
3570
3571 fi
3572
3573 if enabled asm; then
3574     as=${gas:=$as}
3575     check_as <<EOF && enable gnu_as || \
3576         $nogas "GNU assembler not found, install gas-preprocessor"
3577 .macro m n
3578 \n: .int 0
3579 .endm
3580 m x
3581 EOF
3582 fi
3583
3584 check_ldflags -Wl,--as-needed
3585
3586 if check_func dlopen; then
3587     ldl=
3588 elif check_func dlopen -ldl; then
3589     ldl=-ldl
3590 fi
3591
3592 if ! disabled network; then
3593     check_type "sys/types.h sys/socket.h" socklen_t
3594     check_type netdb.h "struct addrinfo"
3595     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3596     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3597     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3598     check_type netinet/in.h "struct sockaddr_in6"
3599     check_type poll.h "struct pollfd"
3600     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3601     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3602     check_type netinet/sctp.h "struct sctp_event_subscribe"
3603     check_func getaddrinfo $network_extralibs
3604     check_func getservbyport $network_extralibs
3605     # Prefer arpa/inet.h over winsock2
3606     if check_header arpa/inet.h ; then
3607         check_func closesocket
3608     elif check_header winsock2.h ; then
3609         check_func_headers winsock2.h closesocket -lws2 &&
3610             network_extralibs="-lws2" ||
3611         { check_func_headers winsock2.h closesocket -lws2_32 &&
3612             network_extralibs="-lws2_32"; }
3613         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3614         check_type ws2tcpip.h socklen_t
3615         check_type ws2tcpip.h "struct addrinfo"
3616         check_type ws2tcpip.h "struct group_source_req"
3617         check_type ws2tcpip.h "struct ip_mreq_source"
3618         check_type ws2tcpip.h "struct ipv6_mreq"
3619         check_type winsock2.h "struct pollfd"
3620         check_type ws2tcpip.h "struct sockaddr_in6"
3621         check_type ws2tcpip.h "struct sockaddr_storage"
3622         check_struct winsock2.h "struct sockaddr" sa_len
3623     else
3624         disable network
3625     fi
3626 fi
3627
3628 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3629 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3630
3631 check_func  fcntl
3632 check_func  fork
3633 check_func_headers stdlib.h getenv
3634 check_func  gethrtime
3635 check_func  getopt
3636 check_func  getrusage
3637 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3638 check_func  gettimeofday
3639 check_func  inet_aton $network_extralibs
3640 check_func  isatty
3641 check_func  localtime_r
3642 check_func  ${malloc_prefix}memalign            && enable memalign
3643 check_func  mkstemp
3644 check_func  mmap
3645 check_func  mprotect
3646 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3647 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3648 check_func  setrlimit
3649 check_func  strerror_r
3650 check_func  strptime
3651 check_func  strtok_r
3652 check_func  sched_getaffinity
3653 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3654 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3655 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3656 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3657 check_func  sysconf
3658 check_func  sysctl
3659 check_func  usleep
3660 check_func_headers io.h setmode
3661 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3662 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3663 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3664 check_func_headers windows.h GetProcessAffinityMask
3665 check_func_headers windows.h GetProcessTimes
3666 check_func_headers windows.h GetSystemTimeAsFileTime
3667 check_func_headers windows.h MapViewOfFile
3668 check_func_headers windows.h SetConsoleTextAttribute
3669 check_func_headers windows.h Sleep
3670 check_func_headers windows.h VirtualAlloc
3671
3672 check_header direct.h
3673 check_header dlfcn.h
3674 check_header dxva.h
3675 check_header dxva2api.h
3676 check_header io.h
3677 check_header malloc.h
3678 check_header poll.h
3679 check_header sys/mman.h
3680 check_header sys/param.h
3681 check_header sys/resource.h
3682 check_header sys/select.h
3683 check_header sys/time.h
3684 check_header sys/un.h
3685 check_header unistd.h
3686 check_header vdpau/vdpau.h
3687 check_header vdpau/vdpau_x11.h
3688 check_header VideoDecodeAcceleration/VDADecoder.h
3689 check_header windows.h
3690 check_header X11/extensions/XvMClib.h
3691
3692 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3693 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3694
3695 if ! disabled w32threads && ! enabled pthreads; then
3696     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3697 fi
3698
3699 # check for some common methods of building with pthread support
3700 # do this before the optional library checks as some of them require pthreads
3701 if ! disabled pthreads && ! enabled w32threads; then
3702     enable pthreads
3703     if check_func pthread_create; then
3704         :
3705     elif check_func pthread_create -pthread; then
3706         add_cflags -pthread
3707         add_extralibs -pthread
3708     elif check_func pthread_create -pthreads; then
3709         add_cflags -pthreads