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     isatty
1298     jack_port_get_latency_range
1299     ldbrx
1300     libdc1394_1
1301     libdc1394_2
1302     local_aligned_16
1303     local_aligned_8
1304     localtime_r
1305     loongson
1306     machine_ioctl_bt848_h
1307     machine_ioctl_meteor_h
1308     machine_rw_barrier
1309     malloc_h
1310     MapViewOfFile
1311     memalign
1312     MemoryBarrier
1313     mkstemp
1314     mm_empty
1315     mmap
1316     mprotect
1317     msvcrt
1318     nanosleep
1319     poll_h
1320     posix_memalign
1321     rdtsc
1322     sched_getaffinity
1323     sdl
1324     SetConsoleTextAttribute
1325     setmode
1326     setrlimit
1327     Sleep
1328     sndio_h
1329     socklen_t
1330     soundcard_h
1331     strerror_r
1332     strptime
1333     strtok_r
1334     struct_addrinfo
1335     struct_group_source_req
1336     struct_ip_mreq_source
1337     struct_ipv6_mreq
1338     struct_pollfd
1339     struct_rusage_ru_maxrss
1340     struct_sockaddr_in6
1341     struct_sockaddr_sa_len
1342     struct_sockaddr_storage
1343     struct_v4l2_frmivalenum_discrete
1344     symver_asm_label
1345     symver_gnu_asm
1346     sync_val_compare_and_swap
1347     sysconf
1348     sysctl
1349     sys_mman_h
1350     sys_param_h
1351     sys_resource_h
1352     sys_select_h
1353     sys_soundcard_h
1354     sys_time_h
1355     sys_videoio_h
1356     threads
1357     unistd_h
1358     usleep
1359     vfp_args
1360     VirtualAlloc
1361     windows_h
1362     winsock2_h
1363     xform_asm
1364     xmm_clobbers
1365 "
1366
1367 # options emitted with CONFIG_ prefix but not available on the command line
1368 CONFIG_EXTRA="
1369     aandcttables
1370     ac3dsp
1371     audio_frame_queue
1372     dsputil
1373     gcrypt
1374     golomb
1375     gplv3
1376     h264chroma
1377     h264dsp
1378     h264pred
1379     h264qpel
1380     hpeldsp
1381     huffman
1382     lgplv3
1383     lpc
1384     mpegaudio
1385     mpegaudiodsp
1386     mpegvideo
1387     mpegvideoenc
1388     nettle
1389     rangecoder
1390     rtpdec
1391     rtpenc_chain
1392     sinewin
1393     videodsp
1394     vp3dsp
1395 "
1396
1397 CMDLINE_SELECT="
1398     $ARCH_EXT_LIST
1399     $CONFIG_LIST
1400     $HAVE_LIST_CMDLINE
1401     $THREADS_LIST
1402     asm
1403     cross_compile
1404     debug
1405     extra_warnings
1406     logging
1407     lto
1408     optimizations
1409 "
1410
1411 PATHS_LIST='
1412     bindir
1413     datadir
1414     incdir
1415     libdir
1416     mandir
1417     prefix
1418     shlibdir
1419 '
1420
1421 CMDLINE_SET="
1422     $PATHS_LIST
1423     ar
1424     arch
1425     as
1426     build_suffix
1427     cc
1428     cpu
1429     cross_prefix
1430     dep_cc
1431     extra_version
1432     host_cc
1433     host_cflags
1434     host_ld
1435     host_ldflags
1436     host_libs
1437     host_os
1438     ld
1439     logfile
1440     malloc_prefix
1441     nm
1442     optflags
1443     pkg_config
1444     random_seed
1445     samples
1446     sysinclude
1447     sysroot
1448     target_exec
1449     target_os
1450     target_path
1451     target_samples
1452     toolchain
1453 "
1454
1455 CMDLINE_APPEND="
1456     extra_cflags
1457     host_cppflags
1458 "
1459
1460 # code dependency declarations
1461
1462 # architecture extensions
1463
1464 armv5te_deps="arm"
1465 armv6_deps="arm"
1466 armv6t2_deps="arm"
1467 neon_deps="arm"
1468 vfp_deps="arm"
1469 vfpv3_deps="vfp"
1470
1471 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1472
1473 altivec_deps="ppc"
1474 ppc4xx_deps="ppc"
1475
1476 vis_deps="sparc"
1477
1478 x86_64_suggest="fast_cmov i686"
1479
1480 amd3dnow_deps="mmx"
1481 amd3dnowext_deps="amd3dnow"
1482 mmx_deps="x86"
1483 mmxext_deps="mmx"
1484 sse_deps="mmxext"
1485 sse2_deps="sse"
1486 sse3_deps="sse2"
1487 ssse3_deps="sse3"
1488 sse4_deps="ssse3"
1489 sse42_deps="sse4"
1490 avx_deps="sse42"
1491 fma4_deps="avx"
1492
1493 mmx_external_deps="yasm"
1494 mmx_inline_deps="inline_asm"
1495 mmx_suggest="mmx_external mmx_inline"
1496
1497 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1498     eval dep=\$${ext}_deps
1499     eval ${ext}_external_deps='"${dep}_external"'
1500     eval ${ext}_inline_deps='"${dep}_inline"'
1501     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1502 done
1503
1504 aligned_stack_if_any="ppc x86"
1505 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1506 fast_clz_if_any="alpha avr32 mips ppc x86"
1507 fast_unaligned_if_any="ppc x86"
1508
1509 inline_asm_deps="!tms470"
1510 need_memalign="altivec neon sse"
1511
1512 symver_if_any="symver_asm_label symver_gnu_asm"
1513
1514 log2_deps="!msvcrt"
1515
1516 # subsystems
1517 dct_select="rdft"
1518 error_resilience_select="dsputil"
1519 lpc_select="dsputil"
1520 mdct_select="fft"
1521 rdft_select="fft"
1522 mpegaudio_select="mpegaudiodsp"
1523 mpegaudiodsp_select="dct"
1524 mpegvideo_select="dsputil hpeldsp videodsp"
1525 mpegvideoenc_select="mpegvideo"
1526
1527 # decoders / encoders
1528 aac_decoder_select="mdct sinewin"
1529 aac_encoder_select="audio_frame_queue mdct sinewin"
1530 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1531 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1532 ac3_encoder_select="mdct ac3dsp dsputil"
1533 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1534 aic_decoder_select="dsputil golomb"
1535 alac_encoder_select="lpc"
1536 als_decoder_select="dsputil"
1537 amrnb_decoder_select="lsp"
1538 amrwb_decoder_select="lsp"
1539 amv_decoder_select="dsputil hpeldsp"
1540 ape_decoder_select="dsputil"
1541 asv1_decoder_select="dsputil"
1542 asv1_encoder_select="dsputil"
1543 asv2_decoder_select="dsputil"
1544 asv2_encoder_select="dsputil"
1545 atrac1_decoder_select="mdct sinewin"
1546 atrac3_decoder_select="mdct"
1547 bink_decoder_select="dsputil hpeldsp"
1548 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1549 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1550 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1551 cllc_decoder_select="dsputil"
1552 comfortnoise_encoder_select="lpc"
1553 cook_decoder_select="dsputil mdct sinewin"
1554 cscd_decoder_select="lzo"
1555 cscd_decoder_suggest="zlib"
1556 dca_decoder_select="mdct"
1557 dnxhd_decoder_select="dsputil"
1558 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1559 dvvideo_decoder_select="dsputil"
1560 dvvideo_encoder_select="dsputil"
1561 dxa_decoder_select="zlib"
1562 eac3_decoder_select="ac3_decoder"
1563 eac3_encoder_select="ac3_encoder"
1564 eamad_decoder_select="aandcttables dsputil mpegvideo"
1565 eatgq_decoder_select="aandcttables dsputil"
1566 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1567 ffv1_decoder_select="dsputil golomb rangecoder"
1568 ffv1_encoder_select="dsputil rangecoder"
1569 ffvhuff_decoder_select="dsputil"
1570 ffvhuff_encoder_select="dsputil huffman"
1571 flac_decoder_select="golomb"
1572 flac_encoder_select="dsputil golomb lpc"
1573 flashsv_decoder_select="zlib"
1574 flashsv_encoder_select="zlib"
1575 flashsv2_decoder_select="zlib"
1576 flv_decoder_select="h263_decoder"
1577 flv_encoder_select="h263_encoder"
1578 fourxm_decoder_select="dsputil"
1579 fraps_decoder_select="dsputil huffman"
1580 g2m_decoder_select="dsputil zlib"
1581 h261_decoder_select="error_resilience mpegvideo"
1582 h261_encoder_select="aandcttables mpegvideoenc"
1583 h263_decoder_select="error_resilience h263_parser mpegvideo"
1584 h263_encoder_select="aandcttables mpegvideoenc"
1585 h263i_decoder_select="h263_decoder"
1586 h263p_encoder_select="h263_encoder"
1587 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1588 h264_decoder_suggest="error_resilience"
1589 huffyuv_decoder_select="dsputil"
1590 huffyuv_encoder_select="dsputil huffman"
1591 iac_decoder_select="dsputil fft mdct sinewin"
1592 imc_decoder_select="dsputil fft mdct sinewin"
1593 indeo3_decoder_select="hpeldsp"
1594 interplay_video_decoder_select="hpeldsp"
1595 jpegls_decoder_select="dsputil golomb hpeldsp"
1596 jpegls_encoder_select="golomb"
1597 jv_decoder_select="dsputil"
1598 lagarith_decoder_select="dsputil"
1599 ljpeg_encoder_select="aandcttables mpegvideoenc"
1600 loco_decoder_select="golomb"
1601 mdec_decoder_select="dsputil error_resilience mpegvideo"
1602 mimic_decoder_select="dsputil hpeldsp"
1603 mjpeg_decoder_select="dsputil hpeldsp"
1604 mjpegb_decoder_select="dsputil hpeldsp"
1605 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1606 mlp_decoder_select="dsputil mlp_parser"
1607 motionpixels_decoder_select="dsputil"
1608 mp1_decoder_select="mpegaudio"
1609 mp1float_decoder_select="mpegaudio"
1610 mp2_decoder_select="mpegaudio"
1611 mp2float_decoder_select="mpegaudio"
1612 mp3_decoder_select="mpegaudio"
1613 mp3adu_decoder_select="mpegaudio"
1614 mp3adufloat_decoder_select="mpegaudio"
1615 mp3float_decoder_select="mpegaudio"
1616 mp3on4_decoder_select="mpegaudio"
1617 mp3on4float_decoder_select="mpegaudio"
1618 mpc7_decoder_select="dsputil mpegaudiodsp"
1619 mpc8_decoder_select="dsputil mpegaudiodsp"
1620 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1621 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1622 mpeg1video_decoder_select="error_resilience mpegvideo"
1623 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1624 mpeg2video_decoder_select="error_resilience mpegvideo"
1625 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1626 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1627 mpeg4_encoder_select="h263_encoder"
1628 msmpeg4v1_decoder_select="h263_decoder"
1629 msmpeg4v2_decoder_select="h263_decoder"
1630 msmpeg4v2_encoder_select="h263_encoder"
1631 msmpeg4v3_decoder_select="h263_decoder"
1632 msmpeg4v3_encoder_select="h263_encoder"
1633 mss2_decoder_select="error_resilience vc1_decoder"
1634 mxpeg_decoder_select="dsputil hpeldsp"
1635 nellymoser_decoder_select="mdct sinewin"
1636 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1637 nuv_decoder_select="dsputil lzo"
1638 png_decoder_select="dsputil zlib"
1639 png_encoder_select="dsputil zlib"
1640 prores_decoder_select="dsputil"
1641 prores_encoder_select="dsputil"
1642 qcelp_decoder_select="lsp"
1643 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1644 ra_144_encoder_select="audio_frame_queue lpc"
1645 ralf_decoder_select="golomb"
1646 rv10_decoder_select="error_resilience h263_decoder"
1647 rv10_encoder_select="h263_encoder"
1648 rv20_decoder_select="error_resilience h263_decoder"
1649 rv20_encoder_select="h263_encoder"
1650 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1651 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1652 shorten_decoder_select="golomb"
1653 sipr_decoder_select="lsp"
1654 sp5x_decoder_select="dsputil hpeldsp"
1655 svq1_decoder_select="hpeldsp"
1656 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1657 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1658 svq3_decoder_suggest="error_resilience zlib"
1659 tak_decoder_select="dsputil"
1660 theora_decoder_select="vp3_decoder"
1661 tiff_decoder_suggest="zlib"
1662 tiff_encoder_suggest="zlib"
1663 thp_decoder_select="dsputil hpeldsp"
1664 truehd_decoder_select="mlp_decoder"
1665 truemotion2_decoder_select="dsputil"
1666 truespeech_decoder_select="dsputil"
1667 tscc_decoder_select="zlib"
1668 twinvq_decoder_select="mdct lsp sinewin"
1669 utvideo_decoder_select="dsputil"
1670 utvideo_encoder_select="dsputil huffman"
1671 vble_decoder_select="dsputil"
1672 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1673 vc1image_decoder_select="vc1_decoder"
1674 vorbis_decoder_select="mdct"
1675 vorbis_encoder_select="mdct"
1676 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1677 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1678 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1679 vp6a_decoder_select="vp6_decoder"
1680 vp6f_decoder_select="vp6_decoder"
1681 vp8_decoder_select="h264pred videodsp"
1682 wmapro_decoder_select="mdct sinewin"
1683 wmav1_decoder_select="mdct sinewin"
1684 wmav1_encoder_select="mdct sinewin"
1685 wmav2_decoder_select="mdct sinewin"
1686 wmav2_encoder_select="mdct sinewin"
1687 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1688 wmv1_decoder_select="h263_decoder"
1689 wmv1_encoder_select="h263_encoder"
1690 wmv2_decoder_select="h263_decoder videodsp"
1691 wmv2_encoder_select="h263_encoder"
1692 wmv3_decoder_select="vc1_decoder"
1693 wmv3image_decoder_select="wmv3_decoder"
1694 zerocodec_decoder_select="zlib"
1695 zlib_decoder_select="zlib"
1696 zlib_encoder_select="zlib"
1697 zmbv_decoder_select="zlib"
1698 zmbv_encoder_select="zlib"
1699
1700 # hardware accelerators
1701 dxva2_deps="dxva2api_h"
1702 vaapi_deps="va_va_h"
1703 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1704 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1705 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1706
1707 h263_vaapi_hwaccel_deps="vaapi"
1708 h263_vaapi_hwaccel_select="h263_decoder"
1709 h263_vdpau_hwaccel_deps="vdpau"
1710 h263_vdpau_hwaccel_select="h263_decoder"
1711 h264_dxva2_hwaccel_deps="dxva2"
1712 h264_dxva2_hwaccel_select="h264_decoder"
1713 h264_vaapi_hwaccel_deps="vaapi"
1714 h264_vaapi_hwaccel_select="h264_decoder"
1715 h264_vda_hwaccel_deps="vda"
1716 h264_vda_hwaccel_select="h264_decoder"
1717 h264_vdpau_decoder_deps="vdpau"
1718 h264_vdpau_decoder_select="h264_decoder"
1719 h264_vdpau_hwaccel_deps="vdpau"
1720 h264_vdpau_hwaccel_select="h264_decoder"
1721 mpeg_vdpau_decoder_deps="vdpau"
1722 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1723 mpeg1_vdpau_decoder_deps="vdpau"
1724 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1725 mpeg1_vdpau_hwaccel_deps="vdpau"
1726 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1727 mpeg2_dxva2_hwaccel_deps="dxva2"
1728 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1729 mpeg2_vaapi_hwaccel_deps="vaapi"
1730 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1731 mpeg2_vdpau_hwaccel_deps="vdpau"
1732 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1733 mpeg4_vaapi_hwaccel_deps="vaapi"
1734 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1735 mpeg4_vdpau_decoder_deps="vdpau"
1736 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1737 mpeg4_vdpau_hwaccel_deps="vdpau"
1738 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1739 vc1_dxva2_hwaccel_deps="dxva2"
1740 vc1_dxva2_hwaccel_select="vc1_decoder"
1741 vc1_vaapi_hwaccel_deps="vaapi"
1742 vc1_vaapi_hwaccel_select="vc1_decoder"
1743 vc1_vdpau_decoder_deps="vdpau"
1744 vc1_vdpau_decoder_select="vc1_decoder"
1745 vc1_vdpau_hwaccel_deps="vdpau"
1746 vc1_vdpau_hwaccel_select="vc1_decoder"
1747 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1748 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1749 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1750 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1751
1752 # parsers
1753 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1754 mpeg4video_parser_select="error_resilience mpegvideo"
1755 mpegvideo_parser_select="error_resilience mpegvideo"
1756 vc1_parser_select="mpegvideo"
1757
1758 # external libraries
1759 libfaac_encoder_deps="libfaac"
1760 libfaac_encoder_select="audio_frame_queue"
1761 libfdk_aac_encoder_deps="libfdk_aac"
1762 libfdk_aac_encoder_select="audio_frame_queue"
1763 libgsm_decoder_deps="libgsm"
1764 libgsm_encoder_deps="libgsm"
1765 libgsm_ms_decoder_deps="libgsm"
1766 libgsm_ms_encoder_deps="libgsm"
1767 libilbc_decoder_deps="libilbc"
1768 libilbc_encoder_deps="libilbc"
1769 libmp3lame_encoder_deps="libmp3lame"
1770 libmp3lame_encoder_select="audio_frame_queue"
1771 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1772 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1773 libopencore_amrnb_encoder_select="audio_frame_queue"
1774 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1775 libopenjpeg_decoder_deps="libopenjpeg"
1776 libopenjpeg_encoder_deps="libopenjpeg"
1777 libopus_decoder_deps="libopus"
1778 libopus_encoder_deps="libopus"
1779 libopus_encoder_select="audio_frame_queue"
1780 libschroedinger_decoder_deps="libschroedinger"
1781 libschroedinger_encoder_deps="libschroedinger"
1782 libspeex_decoder_deps="libspeex"
1783 libspeex_encoder_deps="libspeex"
1784 libspeex_encoder_select="audio_frame_queue"
1785 libtheora_encoder_deps="libtheora"
1786 libvo_aacenc_encoder_deps="libvo_aacenc"
1787 libvo_aacenc_encoder_select="audio_frame_queue"
1788 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1789 libvorbis_encoder_deps="libvorbis"
1790 libvorbis_encoder_select="audio_frame_queue"
1791 libvpx_vp8_decoder_deps="libvpx"
1792 libvpx_vp8_encoder_deps="libvpx"
1793 libvpx_vp9_decoder_deps="libvpx"
1794 libvpx_vp9_encoder_deps="libvpx"
1795 libwavpack_encoder_deps="libwavpack"
1796 libx264_encoder_deps="libx264"
1797 libxavs_encoder_deps="libxavs"
1798 libxvid_encoder_deps="libxvid"
1799
1800 # demuxers / muxers
1801 ac3_demuxer_select="ac3_parser"
1802 asf_stream_muxer_select="asf_muxer"
1803 avisynth_demuxer_deps="avisynth"
1804 dirac_demuxer_select="dirac_parser"
1805 eac3_demuxer_select="ac3_parser"
1806 flac_demuxer_select="flac_parser"
1807 ipod_muxer_select="mov_muxer"
1808 ismv_muxer_select="mov_muxer"
1809 matroska_audio_muxer_select="matroska_muxer"
1810 matroska_demuxer_suggest="bzlib lzo zlib"
1811 mov_demuxer_suggest="zlib"
1812 mov_muxer_select="rtpenc_chain"
1813 mp3_demuxer_select="mpegaudio_parser"
1814 mp4_muxer_select="mov_muxer"
1815 mpegts_muxer_select="adts_muxer latm_muxer"
1816 mpegtsraw_demuxer_select="mpegts_demuxer"
1817 mxf_d10_muxer_select="mxf_muxer"
1818 ogg_demuxer_select="golomb"
1819 psp_muxer_select="mov_muxer"
1820 rtp_demuxer_select="sdp_demuxer"
1821 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1822 rtsp_demuxer_select="http_protocol rtpdec"
1823 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1824 sap_demuxer_select="sdp_demuxer"
1825 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1826 sdp_demuxer_select="rtpdec"
1827 smoothstreaming_muxer_select="ismv_muxer"
1828 spdif_muxer_select="aac_parser"
1829 tak_demuxer_select="tak_parser"
1830 tg2_muxer_select="mov_muxer"
1831 tgp_muxer_select="mov_muxer"
1832 w64_demuxer_deps="wav_demuxer"
1833
1834 # indevs / outdevs
1835 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1836 alsa_outdev_deps="alsa_asoundlib_h"
1837 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1838 dv1394_indev_deps="dv1394 dv_demuxer"
1839 fbdev_indev_deps="linux_fb_h"
1840 jack_indev_deps="jack_jack_h pthreads"
1841 libcdio_indev_deps="libcdio"
1842 libdc1394_indev_deps="libdc1394"
1843 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1844 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1845 pulse_indev_deps="libpulse"
1846 sndio_indev_deps="sndio_h"
1847 sndio_outdev_deps="sndio_h"
1848 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1849 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1850 vfwcap_indev_extralibs="-lavicap32"
1851 x11grab_indev_deps="x11grab XShmCreateImage"
1852
1853 # protocols
1854 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1855 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1856 ffrtmpcrypt_protocol_select="tcp_protocol"
1857 ffrtmphttp_protocol_deps="!librtmp_protocol"
1858 ffrtmphttp_protocol_select="http_protocol"
1859 gopher_protocol_select="network"
1860 httpproxy_protocol_select="tcp_protocol"
1861 http_protocol_select="tcp_protocol"
1862 https_protocol_select="tls_protocol"
1863 librtmp_protocol_deps="librtmp"
1864 librtmpe_protocol_deps="librtmp"
1865 librtmps_protocol_deps="librtmp"
1866 librtmpt_protocol_deps="librtmp"
1867 librtmpte_protocol_deps="librtmp"
1868 mmsh_protocol_select="http_protocol"
1869 mmst_protocol_select="network"
1870 rtmp_protocol_deps="!librtmp_protocol"
1871 rtmp_protocol_select="tcp_protocol"
1872 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1873 rtmps_protocol_deps="!librtmp_protocol"
1874 rtmps_protocol_select="tls_protocol"
1875 rtmpt_protocol_select="ffrtmphttp_protocol"
1876 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1877 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1878 rtp_protocol_select="udp_protocol"
1879 sctp_protocol_deps="struct_sctp_event_subscribe"
1880 sctp_protocol_select="network"
1881 srtp_protocol_select="rtp_protocol"
1882 tcp_protocol_select="network"
1883 tls_protocol_deps_any="openssl gnutls"
1884 tls_protocol_select="tcp_protocol"
1885 udp_protocol_select="network"
1886
1887 # filters
1888 blackframe_filter_deps="gpl"
1889 boxblur_filter_deps="gpl"
1890 cropdetect_filter_deps="gpl"
1891 delogo_filter_deps="gpl"
1892 drawtext_filter_deps="libfreetype"
1893 frei0r_filter_deps="frei0r dlopen strtok_r"
1894 frei0r_filter_extralibs='$ldl'
1895 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1896 frei0r_src_filter_extralibs='$ldl'
1897 hqdn3d_filter_deps="gpl"
1898 interlace_filter_deps="gpl"
1899 resample_filter_deps="avresample"
1900 ocv_filter_deps="libopencv"
1901 scale_filter_deps="swscale"
1902 yadif_filter_deps="gpl"
1903
1904 # libraries
1905 avcodec_deps="avutil"
1906 avdevice_deps="avutil avcodec avformat"
1907 avfilter_deps="avutil"
1908 avformat_deps="avutil avcodec"
1909 avresample_deps="avutil"
1910 swscale_deps="avutil"
1911
1912 # programs
1913 avconv_deps="avcodec avfilter avformat avresample swscale"
1914 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1915                fps_filter null_filter resample_filter scale_filter
1916                setpts_filter trim_filter"
1917 avplay_deps="avcodec avformat avresample swscale sdl"
1918 avplay_select="rdft"
1919 avprobe_deps="avcodec avformat"
1920 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1921 avserver_extralibs='$ldl'
1922
1923 doc_deps="texi2html"
1924
1925 # default parameters
1926
1927 logfile="config.log"
1928
1929 # installation paths
1930 prefix_default="/usr/local"
1931 bindir_default='${prefix}/bin'
1932 datadir_default='${prefix}/share/avconv'
1933 incdir_default='${prefix}/include'
1934 libdir_default='${prefix}/lib'
1935 mandir_default='${prefix}/share/man'
1936 shlibdir_default="$libdir_default"
1937
1938 # toolchain
1939 ar_default="ar"
1940 cc_default="gcc"
1941 host_cc_default="gcc"
1942 cp_f="cp -f"
1943 ln_s="ln -s -f"
1944 nm_default="nm -g"
1945 objformat="elf"
1946 pkg_config_default=pkg-config
1947 ranlib="ranlib"
1948 yasmexe="yasm"
1949
1950 nogas=":"
1951
1952 # machine
1953 arch_default=$(uname -m)
1954 cpu="generic"
1955
1956 # OS
1957 target_os_default=$(tolower $(uname -s))
1958 host_os=$target_os_default
1959
1960 # configurable options
1961 enable $LIBRARY_LIST $PROGRAM_LIST
1962
1963 enable asm
1964 enable debug
1965 enable doc
1966 enable optimizations
1967 enable safe_bitstream_reader
1968 enable static
1969 enable swscale_alpha
1970
1971 # By default, enable only those hwaccels that have no external dependencies.
1972 enable dxva2 vdpau
1973
1974 # build settings
1975 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1976 AVSERVERLDFLAGS=-Wl,-E
1977 LIBPREF="lib"
1978 LIBSUF=".a"
1979 FULLNAME='$(NAME)$(BUILDSUF)'
1980 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1981 SLIBPREF="lib"
1982 SLIBSUF=".so"
1983 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1984 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1985 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1986 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1987 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1988 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1989
1990 asflags_filter=echo
1991 cflags_filter=echo
1992 ldflags_filter=echo
1993
1994 AS_C='-c'
1995 AS_O='-o $@'
1996 CC_C='-c'
1997 CC_E='-E -o $@'
1998 CC_O='-o $@'
1999 LD_O='-o $@'
2000 LD_LIB='-l%'
2001 LD_PATH='-L'
2002 HOSTCC_C='-c'
2003 HOSTCC_O='-o $@'
2004 HOSTLD_O='-o $@'
2005
2006 host_cflags='-O3 -g'
2007 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2008 host_libs='-lm'
2009 host_cflags_filter=echo
2010 host_ldflags_filter=echo
2011
2012 target_path='$(CURDIR)'
2013
2014 # since the object filename is not given with the -MM flag, the compiler
2015 # is only able to print the basename, and we must add the path ourselves
2016 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2017 DEPFLAGS='-MM'
2018
2019 # find source path
2020 if test -f configure; then
2021     source_path=.
2022 else
2023     source_path=$(cd $(dirname "$0"); pwd)
2024     echo "$source_path" | grep -q '[[:blank:]]' &&
2025         die "Out of tree builds are impossible with whitespace in source path."
2026     test -e "$source_path/config.h" &&
2027         die "Out of tree builds are impossible with config.h in source dir."
2028 fi
2029
2030 for v in "$@"; do
2031     r=${v#*=}
2032     l=${v%"$r"}
2033     r=$(sh_quote "$r")
2034     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2035 done
2036
2037 find_things(){
2038     thing=$1
2039     pattern=$2
2040     file=$source_path/$3
2041     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2042 }
2043
2044 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2045 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2046 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2047 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2048 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2049 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2050 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2051 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2052 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2053 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2054 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2055
2056 ALL_COMPONENTS="
2057     $BSF_LIST
2058     $DECODER_LIST
2059     $DEMUXER_LIST
2060     $ENCODER_LIST
2061     $FILTER_LIST
2062     $HWACCEL_LIST
2063     $INDEV_LIST
2064     $MUXER_LIST
2065     $OUTDEV_LIST
2066     $PARSER_LIST
2067     $PROTOCOL_LIST
2068 "
2069
2070 for n in $COMPONENT_LIST; do
2071     v=$(toupper ${n%s})_LIST
2072     eval enable \$$v
2073     eval ${n}_if_any="\$$v"
2074 done
2075
2076 enable $ARCH_EXT_LIST
2077
2078 die_unknown(){
2079     echo "Unknown option \"$1\"."
2080     echo "See $0 --help for available options."
2081     exit 1
2082 }
2083
2084 print_3_columns() {
2085     cat | tr ' ' '\n' | sort | pr -r -3 -t
2086 }
2087
2088 show_list() {
2089     suffix=_$1
2090     shift
2091     echo $* | sed s/$suffix//g | print_3_columns
2092     exit 0
2093 }
2094
2095 rand_list(){
2096     IFS=', '
2097     set -- $*
2098     unset IFS
2099     for thing; do
2100         comp=${thing%:*}
2101         prob=${thing#$comp}
2102         prob=${prob#:}
2103         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2104         echo "prob ${prob:-0.5}"
2105         printf '%s\n' $comp
2106     done
2107 }
2108
2109 do_random(){
2110     action=$1
2111     shift
2112     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2113     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2114 }
2115
2116 for opt do
2117     optval="${opt#*=}"
2118     case "$opt" in
2119         --extra-ldflags=*)
2120             add_ldflags $optval
2121         ;;
2122         --extra-libs=*)
2123             add_extralibs $optval
2124         ;;
2125         --disable-devices)
2126             disable $INDEV_LIST $OUTDEV_LIST
2127         ;;
2128         --enable-debug=*)
2129             debuglevel="$optval"
2130         ;;
2131         --disable-programs)
2132             disable $PROGRAM_LIST
2133         ;;
2134         --disable-everything)
2135             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2136         ;;
2137         --disable-all)
2138             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2139             disable $LIBRARY_LIST $PROGRAM_LIST doc
2140         ;;
2141         --enable-random|--disable-random)
2142             action=${opt%%-random}
2143             do_random ${action#--} $COMPONENT_LIST
2144         ;;
2145         --enable-random=*|--disable-random=*)
2146             action=${opt%%-random=*}
2147             do_random ${action#--} $optval
2148         ;;
2149         --enable-*=*|--disable-*=*)
2150             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2151             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2152             eval list=\$$(toupper $thing)_LIST
2153             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2154             $action $(filter "$name" $list)
2155         ;;
2156         --enable-?*|--disable-?*)
2157             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2158             if is_in $option $COMPONENT_LIST; then
2159                 test $action = disable && action=unset
2160                 eval $action \$$(toupper ${option%s})_LIST
2161             elif is_in $option $CMDLINE_SELECT; then
2162                 $action $option
2163             else
2164                 die_unknown $opt
2165             fi
2166         ;;
2167         --list-*)
2168             NAME="${opt#--list-}"
2169             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2170             NAME=${NAME%s}
2171             eval show_list $NAME \$$(toupper $NAME)_LIST
2172         ;;
2173         --help|-h) show_help
2174         ;;
2175         *)
2176             optname="${opt%%=*}"
2177             optname="${optname#--}"
2178             optname=$(echo "$optname" | sed 's/-/_/g')
2179             if is_in $optname $CMDLINE_SET; then
2180                 eval $optname='$optval'
2181             elif is_in $optname $CMDLINE_APPEND; then
2182                 append $optname "$optval"
2183             else
2184                 die_unknown $opt
2185             fi
2186         ;;
2187     esac
2188 done
2189
2190 disabled logging && logfile=/dev/null
2191
2192 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2193 set >> $logfile
2194
2195 test -n "$cross_prefix" && enable cross_compile
2196
2197 if enabled cross_compile; then
2198     test -n "$arch" && test -n "$target_os" ||
2199         die "Must specify target arch and OS when cross-compiling"
2200 fi
2201
2202 ar_default="${cross_prefix}${ar_default}"
2203 cc_default="${cross_prefix}${cc_default}"
2204 nm_default="${cross_prefix}${nm_default}"
2205 pkg_config_default="${cross_prefix}${pkg_config_default}"
2206 ranlib="${cross_prefix}${ranlib}"
2207
2208 sysinclude_default="${sysroot}/usr/include"
2209
2210 case "$toolchain" in
2211     clang-asan)
2212         cc_default="clang"
2213         add_cflags  -fsanitize=address
2214         add_ldflags -fsanitize=address
2215     ;;
2216     clang-tsan)
2217         cc_default="clang"
2218         add_cflags  -fsanitize=thread -pie
2219         add_ldflags -fsanitize=thread -pie
2220     ;;
2221     gcc-asan)
2222         cc_default="gcc"
2223         add_cflags  -fsanitize=address
2224         add_ldflags -fsanitize=address
2225     ;;
2226     gcc-tsan)
2227         cc_default="gcc"
2228         add_cflags  -fsanitize=thread -pie -fPIC
2229         add_ldflags -fsanitize=thread -pie -fPIC
2230     ;;
2231     valgrind-massif)
2232         target_exec_default="valgrind"
2233         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2234     ;;
2235     valgrind-memcheck)
2236         target_exec_default="valgrind"
2237         target_exec_args="--track-origins=yes --leak-check=full"
2238     ;;
2239     msvc)
2240         cc_default="c99wrap cl"
2241         ld_default="c99wrap link"
2242         nm_default="dumpbin -symbols"
2243         ar_default="lib"
2244         target_os_default="win32"
2245     ;;
2246     icl)
2247         cc_default="c99wrap -noconv icl"
2248         ld_default="c99wrap xilink"
2249         nm_default="dumpbin -symbols"
2250         ar_default="xilib"
2251         target_os_default="win32"
2252     ;;
2253     gcov)
2254         add_cflags  -fprofile-arcs -ftest-coverage
2255         add_ldflags -fprofile-arcs -ftest-coverage
2256     ;;
2257     ?*)
2258         die "Unknown toolchain $toolchain"
2259     ;;
2260 esac
2261
2262 set_default arch cc pkg_config sysinclude target_exec target_os
2263 enabled cross_compile || host_cc_default=$cc
2264 set_default host_cc
2265
2266 if ! $pkg_config --version >/dev/null 2>&1; then
2267     warn "$pkg_config not found, library detection may fail."
2268     pkg_config=false
2269 fi
2270
2271 exesuf() {
2272     case $1 in
2273         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2274     esac
2275 }
2276
2277 EXESUF=$(exesuf $target_os)
2278 HOSTEXESUF=$(exesuf $host_os)
2279
2280 # set temporary file name
2281 : ${TMPDIR:=$TEMPDIR}
2282 : ${TMPDIR:=$TMP}
2283 : ${TMPDIR:=/tmp}
2284
2285 if ! check_cmd mktemp -u XXXXXX; then
2286     # simple replacement for missing mktemp
2287     # NOT SAFE FOR GENERAL USE
2288     mktemp(){
2289         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2290     }
2291 fi
2292
2293 tmpfile(){
2294     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2295         (set -C; exec > $tmp) 2>/dev/null ||
2296         die "Unable to create temporary file in $TMPDIR."
2297     append TMPFILES $tmp
2298     eval $1=$tmp
2299 }
2300
2301 trap 'rm -f -- $TMPFILES' EXIT
2302
2303 tmpfile TMPASM .asm
2304 tmpfile TMPC   .c
2305 tmpfile TMPE   $EXESUF
2306 tmpfile TMPH   .h
2307 tmpfile TMPO   .o
2308 tmpfile TMPS   .S
2309 tmpfile TMPSH  .sh
2310 tmpfile TMPV   .ver
2311
2312 unset -f mktemp
2313
2314 chmod +x $TMPE
2315
2316 # make sure we can execute files in $TMPDIR
2317 cat > $TMPSH 2>> $logfile <<EOF
2318 #! /bin/sh
2319 EOF
2320 chmod +x $TMPSH >> $logfile 2>&1
2321 if ! $TMPSH >> $logfile 2>&1; then
2322     cat <<EOF
2323 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2324 variable to another directory and make sure that it is not mounted noexec.
2325 EOF
2326     die "Sanity test failed."
2327 fi
2328
2329 ccc_flags(){
2330     for flag; do
2331         case $flag in
2332             -std=c99)           echo -c99                       ;;
2333             -mcpu=*)            echo -arch ${flag#*=}           ;;
2334             -mieee)             echo -ieee                      ;;
2335             -O*|-fast)          echo $flag                      ;;
2336             -fno-math-errno)    echo -assume nomath_errno       ;;
2337             -g)                 echo -g3                        ;;
2338             -Wall)              echo -msg_enable level2         ;;
2339             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2340             -Wl,*)              echo $flag                      ;;
2341             -f*|-W*)                                            ;;
2342             *)                  echo $flag                      ;;
2343         esac
2344    done
2345 }
2346
2347 msvc_common_flags(){
2348     for flag; do
2349         case $flag in
2350             # In addition to specifying certain flags under the compiler
2351             # specific filters, they must be specified here as well or else the
2352             # generic catch all at the bottom will print the original flag.
2353             -Wall)                ;;
2354             -std=c99)             ;;
2355             # Common flags
2356             -fomit-frame-pointer) echo -Oy ;;
2357             -g)                   echo -Z7 ;;
2358             -fno-math-errno)      ;;
2359             -fno-common)          ;;
2360             -fno-signed-zeros)    ;;
2361             -fPIC)                ;;
2362             -mthumb)              ;;
2363             -march=*)             ;;
2364             -lz)                  echo zlib.lib ;;
2365             -lavifil32)           echo vfw32.lib ;;
2366             -lavicap32)           echo vfw32.lib user32.lib ;;
2367             -l*)                  echo ${flag#-l}.lib ;;
2368             *)                    echo $flag ;;
2369         esac
2370     done
2371 }
2372
2373 msvc_flags(){
2374     msvc_common_flags "$@"
2375     for flag; do
2376         case $flag in
2377             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2378                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2379                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2380                                        -wd4996 -wd4273 ;;
2381         esac
2382     done
2383 }
2384
2385 icl_flags(){
2386     msvc_common_flags "$@"
2387     for flag; do
2388         case $flag in
2389             # Despite what Intel's documentation says -Wall, which is supported
2390             # on Windows, does enable remarks so disable them here.
2391             -Wall)                echo $flag -Qdiag-disable:remark ;;
2392             -std=c99)             echo -Qstd=c99 ;;
2393         esac
2394     done
2395 }
2396
2397 pgi_flags(){
2398     for flag; do
2399         case $flag in
2400             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2401             -fomit-frame-pointer) echo -Mnoframe ;;
2402             -g)                   echo -gopt ;;
2403             *)                    echo $flag ;;
2404         esac
2405     done
2406 }
2407
2408 suncc_flags(){
2409     for flag; do
2410         case $flag in
2411             -march=*|-mcpu=*)
2412                 case "${flag#*=}" in
2413                     native)                   echo -xtarget=native       ;;
2414                     v9|niagara)               echo -xarch=sparc          ;;
2415                     ultrasparc)               echo -xarch=sparcvis       ;;
2416                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2417                     i586|pentium)             echo -xchip=pentium        ;;
2418                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2419                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2420                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2421                     pentium4*)          echo -xtarget=pentium4           ;;
2422                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2423                     *-sse3)             echo -xarch=sse3                 ;;
2424                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2425                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2426                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2427                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2428                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2429                     k8|opteron|athlon64|athlon-fx)
2430                                                echo -xarch=sse2a         ;;
2431                     athlon*)                   echo -xarch=pentium_proa  ;;
2432                 esac
2433                 ;;
2434             -std=c99)             echo -xc99              ;;
2435             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2436             -fPIC)                echo -KPIC -xcode=pic32 ;;
2437             -W*,*)                echo $flag              ;;
2438             -f*-*|-W*|-mimpure-text)                      ;;
2439             -shared)              echo -G                 ;;
2440             *)                    echo $flag              ;;
2441         esac
2442     done
2443 }
2444
2445 tms470_flags(){
2446     for flag; do
2447         case $flag in
2448             -march=*|-mcpu=*)
2449                 case "${flag#*=}" in
2450                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2451                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2452                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2453                     armv6*|arm11*)          echo -mv=6   ;;
2454                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2455                                             echo -mv=5e  ;;
2456                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2457                 esac
2458                 ;;
2459             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2460             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2461             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2462             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2463             -msoft-float)   echo --float_support=vfplib       ;;
2464             -O[0-3]|-mf=*)  echo $flag                        ;;
2465             -g)             echo -g -mn                       ;;
2466             -pds=*)         echo $flag                        ;;
2467             -D*|-I*)        echo $flag                        ;;
2468             --gcc|--abi=*)  echo $flag                        ;;
2469             -me)            echo $flag                        ;;
2470         esac
2471     done
2472 }
2473
2474 probe_cc(){
2475     pfx=$1
2476     _cc=$2
2477
2478     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2479     unset _ld_o _ldflags _ld_lib _ld_path
2480     unset _depflags _DEPCMD _DEPFLAGS
2481     _flags_filter=echo
2482
2483     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2484         _type=llvm_gcc
2485         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2486         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2487         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2488         _cflags_speed='-O3'
2489         _cflags_size='-Os'
2490     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2491         _type=gcc
2492         gcc_version=$($_cc --version | head -n1)
2493         gcc_basever=$($_cc -dumpversion)
2494         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2495         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2496         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2497         if ! $_cc -dumpversion | grep -q '^2\.'; then
2498             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2499         fi
2500         _cflags_speed='-O3'
2501         _cflags_size='-Os'
2502     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2503         _type=icc
2504         _ident=$($_cc --version | head -n1)
2505         _depflags='-MMD'
2506         _cflags_speed='-O3'
2507         _cflags_size='-Os'
2508         _cflags_noopt='-O1'
2509     elif $_cc -v 2>&1 | grep -q xlc; then
2510         _type=xlc
2511         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2512         _cflags_speed='-O5'
2513         _cflags_size='-O5 -qcompact'
2514     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2515         _type=ccc
2516         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2517         _DEPFLAGS='-M'
2518         _cflags_speed='-fast'
2519         _cflags_size='-O1'
2520         _flags_filter=ccc_flags
2521     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2522         test -d "$sysroot" || die "No valid sysroot specified."
2523         _type=armcc
2524         _ident=$($_cc --vsn | head -n1)
2525         armcc_conf="$PWD/armcc.conf"
2526         $_cc --arm_linux_configure                 \
2527              --arm_linux_config_file="$armcc_conf" \
2528              --configure_sysroot="$sysroot"        \
2529              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2530              die "Error creating armcc configuration file."
2531         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2532         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2533         as_default="${cross_prefix}gcc"
2534         _depflags='-MMD'
2535         _cflags_speed='-O3'
2536         _cflags_size='-Os'
2537     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2538         _type=tms470
2539         _ident=$($_cc -version | head -n1 | tr -s ' ')
2540         _flags='--gcc --abi=eabi -me'
2541         _cc_e='-ppl -fe=$@'
2542         _cc_o='-fe=$@'
2543         _depflags='-ppa -ppd=$(@:.o=.d)'
2544         _cflags_speed='-O3 -mf=5'
2545         _cflags_size='-O3 -mf=2'
2546         _flags_filter=tms470_flags
2547     elif $_cc -v 2>&1 | grep -q clang; then
2548         _type=clang
2549         _ident=$($_cc --version | head -n1)
2550         _depflags='-MMD'
2551         _cflags_speed='-O3'
2552         _cflags_size='-Os'
2553     elif $_cc -V 2>&1 | grep -q Sun; then
2554         _type=suncc
2555         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2556         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2557         _DEPFLAGS='-xM1 -xc99'
2558         _ldflags='-std=c99'
2559         _cflags_speed='-O5'
2560         _cflags_size='-O5 -xspace'
2561         _flags_filter=suncc_flags
2562     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2563         _type=pathscale
2564         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2565         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2566         _cflags_speed='-O2'
2567         _cflags_size='-Os'
2568         _flags_filter='filter_out -Wdisabled-optimization'
2569     elif $_cc -v 2>&1 | grep -q Open64; then
2570         _type=open64
2571         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2572         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2573         _cflags_speed='-O2'
2574         _cflags_size='-Os'
2575         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2576     elif $_cc -V 2>&1 | grep -q Portland; then
2577         _type=pgi
2578         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2579         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2580         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2581         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2582         _cflags_noopt="-O1"
2583         _flags_filter=pgi_flags
2584     elif $_cc 2>&1 | grep -q Microsoft; then
2585         _type=msvc
2586         _ident=$($cc 2>&1 | head -n1)
2587         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2588         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2589         _cflags_speed="-O2"
2590         _cflags_size="-O1"
2591         # Nonstandard output options, to avoid msys path conversion issues.
2592         # Relies on wrapper to remap it.
2593         if $_cc 2>&1 | grep -q Linker; then
2594             _ld_o='-out $@'
2595         else
2596             _ld_o='-Fe$@'
2597         fi
2598         _cc_o='-Fo $@'
2599         _cc_e='-P -Fi $@'
2600         _flags_filter=msvc_flags
2601         _ld_lib='lib%.a'
2602         _ld_path='-libpath:'
2603         _flags='-nologo'
2604         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2605         if [ $pfx = hostcc ]; then
2606             append _cflags -Dsnprintf=_snprintf
2607         fi
2608     elif $_cc 2>&1 | grep -q Intel; then
2609         _type=icl
2610         _ident=$($cc 2>&1 | head -n1)
2611         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2612         # Not only is O3 broken on 13.x+ but it is slower on all previous
2613         # versions (tested) as well.
2614         _cflags_speed="-O2"
2615         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2616         # Nonstandard output options, to avoid msys path conversion issues.
2617         # Relies on wrapper to remap it.
2618         if $_cc 2>&1 | grep -q Linker; then
2619             _ld_o='-out $@'
2620         else
2621             _ld_o='-Fe$@'
2622         fi
2623         _cc_o='-Fo $@'
2624         _cc_e='-P'
2625         _flags_filter=icl_flags
2626         _ld_lib='lib%.a'
2627         _ld_path='-libpath:'
2628         # -Qdiag-error to make icl error when seeing certain unknown arguments
2629         _flags='-nologo -Qdiag-error:4044,10157'
2630         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2631         # with MSVC which enables it by default.
2632         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2633         if [ $pfx = hostcc ]; then
2634             append _cflags -Dsnprintf=_snprintf
2635         fi
2636     fi
2637
2638     eval ${pfx}_type=\$_type
2639     eval ${pfx}_ident=\$_ident
2640 }
2641
2642 set_ccvars(){
2643     eval ${1}_C=\${_cc_c-\${${1}_C}}
2644     eval ${1}_E=\${_cc_e-\${${1}_E}}
2645     eval ${1}_O=\${_cc_o-\${${1}_O}}
2646
2647     if [ -n "$_depflags" ]; then
2648         eval ${1}_DEPFLAGS=\$_depflags
2649     else
2650         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2651         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2652         eval DEP${1}FLAGS=\$_flags
2653     fi
2654 }
2655
2656 probe_cc cc "$cc"
2657 cflags_filter=$_flags_filter
2658 cflags_speed=$_cflags_speed
2659 cflags_size=$_cflags_size
2660 cflags_noopt=$_cflags_noopt
2661 add_cflags $_flags $_cflags
2662 cc_ldflags=$_ldflags
2663 set_ccvars CC
2664
2665 probe_cc hostcc "$host_cc"
2666 host_cflags_filter=$_flags_filter
2667 add_host_cflags  $_flags $_cflags
2668 set_ccvars HOSTCC
2669
2670 test -n "$cc_type" && enable $cc_type ||
2671     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2672
2673 : ${as_default:=$cc}
2674 : ${dep_cc_default:=$cc}
2675 : ${ld_default:=$cc}
2676 : ${host_ld_default:=$host_cc}
2677 set_default ar as dep_cc ld host_ld
2678
2679 probe_cc as "$as"
2680 asflags_filter=$_flags_filter
2681 add_asflags $_flags $_cflags
2682 set_ccvars AS
2683
2684 probe_cc ld "$ld"
2685 ldflags_filter=$_flags_filter
2686 add_ldflags $_flags $_ldflags
2687 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2688 LD_O=${_ld_o-$LD_O}
2689 LD_LIB=${_ld_lib-$LD_LIB}
2690 LD_PATH=${_ld_path-$LD_PATH}
2691
2692 probe_cc hostld "$host_ld"
2693 host_ldflags_filter=$_flags_filter
2694 add_host_ldflags $_flags $_ldflags
2695 HOSTLD_O=${_ld_o-$HOSTLD_O}
2696
2697 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2698     probe_cc depcc "$dep_cc"
2699     CCDEP=${_DEPCMD:-$DEPCMD}
2700     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2701     DEPCCFLAGS=$_flags
2702 fi
2703
2704 if $ar 2>&1 | grep -q Microsoft; then
2705     arflags="-nologo"
2706     ar_o='-out:$@'
2707 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2708     arflags="rq"
2709     ar_o='$@'
2710 else
2711     arflags="rc"
2712     ar_o='$@'
2713 fi
2714
2715 add_cflags $extra_cflags
2716 add_asflags $extra_cflags
2717
2718 if test -n "$sysroot"; then
2719     case "$cc_type" in
2720         gcc|llvm_gcc|clang)
2721             add_cppflags --sysroot="$sysroot"
2722             add_ldflags --sysroot="$sysroot"
2723         ;;
2724         tms470)
2725             add_cppflags -I"$sysinclude"
2726             add_ldflags  --sysroot="$sysroot"
2727         ;;
2728     esac
2729 fi
2730
2731 if test "$cpu" = host; then
2732     enabled cross_compile &&
2733         die "--cpu=host makes no sense when cross-compiling."
2734
2735     case "$cc_type" in
2736         gcc|llvm_gcc)
2737             check_native(){
2738                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2739                 sed -n "/cc1.*$1=/{
2740                             s/.*$1=\\([^ ]*\\).*/\\1/
2741                             p
2742                             q
2743                         }" $TMPE
2744             }
2745             cpu=$(check_native -march || check_native -mcpu)
2746         ;;
2747     esac
2748
2749     test "${cpu:-host}" = host &&
2750         die "--cpu=host not supported with compiler $cc"
2751 fi
2752
2753 # Deal with common $arch aliases
2754 case "$arch" in
2755     aarch64|arm64)
2756         arch="aarch64"
2757     ;;
2758     arm*)
2759         arch="arm"
2760     ;;
2761     mips*|IP*)
2762         arch="mips"
2763     ;;
2764     parisc*|hppa*)
2765         arch="parisc"
2766     ;;
2767     "Power Macintosh"|ppc*|powerpc*)
2768         arch="ppc"
2769     ;;
2770     s390|s390x)
2771         arch="s390"
2772     ;;
2773     sh4|sh)
2774         arch="sh4"
2775     ;;
2776     sun4u|sparc*)
2777         arch="sparc"
2778     ;;
2779     tilegx|tile-gx)
2780         arch="tilegx"
2781     ;;
2782     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2783         arch="x86"
2784     ;;
2785 esac
2786
2787 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2788 enable $arch
2789
2790 # Add processor-specific flags
2791 if enabled aarch64; then
2792
2793     case $cpu in
2794         armv*)
2795             cpuflags="-march=$cpu"
2796         ;;
2797         *)
2798             cpuflags="-mcpu=$cpu"
2799         ;;
2800     esac
2801
2802 elif enabled alpha; then
2803
2804     cpuflags="-mcpu=$cpu"
2805
2806 elif enabled arm; then
2807
2808     check_arm_arch() {
2809         check_cpp_condition stddef.h \
2810             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2811             $cpuflags
2812     }
2813
2814     probe_arm_arch() {
2815         if   check_arm_arch 4;        then echo armv4;
2816         elif check_arm_arch 4T;       then echo armv4t;
2817         elif check_arm_arch 5;        then echo armv5;
2818         elif check_arm_arch 5E;       then echo armv5e;
2819         elif check_arm_arch 5T;       then echo armv5t;
2820         elif check_arm_arch 5TE;      then echo armv5te;
2821         elif check_arm_arch 5TEJ;     then echo armv5te;
2822         elif check_arm_arch 6;        then echo armv6;
2823         elif check_arm_arch 6J;       then echo armv6j;
2824         elif check_arm_arch 6K;       then echo armv6k;
2825         elif check_arm_arch 6Z;       then echo armv6z;
2826         elif check_arm_arch 6ZK;      then echo armv6zk;
2827         elif check_arm_arch 6T2;      then echo armv6t2;
2828         elif check_arm_arch 7;        then echo armv7;
2829         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2830         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2831         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2832         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2833         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2834         fi
2835     }
2836
2837     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2838
2839     case $cpu in
2840         armv*)
2841             cpuflags="-march=$cpu"
2842             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2843         ;;
2844         *)
2845             cpuflags="-mcpu=$cpu"
2846             case $cpu in
2847                 cortex-a*)                               subarch=armv7a  ;;
2848                 cortex-r*)                               subarch=armv7r  ;;
2849                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2850                 arm11*)                                  subarch=armv6   ;;
2851                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2852                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2853                 *)                             subarch=$(probe_arm_arch) ;;
2854             esac
2855         ;;
2856     esac
2857
2858     case "$subarch" in
2859         armv5t*)    enable fast_clz                ;;
2860         armv[6-8]*) enable fast_clz fast_unaligned ;;
2861     esac
2862
2863 elif enabled avr32; then
2864
2865     case $cpu in
2866         ap7[02]0[0-2])
2867             subarch="avr32_ap"
2868             cpuflags="-mpart=$cpu"
2869         ;;
2870         ap)
2871             subarch="avr32_ap"
2872             cpuflags="-march=$cpu"
2873         ;;
2874         uc3[ab]*)
2875             subarch="avr32_uc"
2876             cpuflags="-mcpu=$cpu"
2877         ;;
2878         uc)
2879             subarch="avr32_uc"
2880             cpuflags="-march=$cpu"
2881         ;;
2882     esac
2883
2884 elif enabled bfin; then
2885
2886     cpuflags="-mcpu=$cpu"
2887
2888 elif enabled mips; then
2889
2890     cpuflags="-march=$cpu"
2891
2892 elif enabled ppc; then
2893
2894     case $(tolower $cpu) in
2895         601|ppc601|powerpc601)
2896             cpuflags="-mcpu=601"
2897             disable altivec
2898         ;;
2899         603*|ppc603*|powerpc603*)
2900             cpuflags="-mcpu=603"
2901             disable altivec
2902         ;;
2903         604*|ppc604*|powerpc604*)
2904             cpuflags="-mcpu=604"
2905             disable altivec
2906         ;;
2907         g3|75*|ppc75*|powerpc75*)
2908             cpuflags="-mcpu=750"
2909             disable altivec
2910         ;;
2911         g4|745*|ppc745*|powerpc745*)
2912             cpuflags="-mcpu=7450"
2913         ;;
2914         74*|ppc74*|powerpc74*)
2915             cpuflags="-mcpu=7400"
2916         ;;
2917         g5|970|ppc970|powerpc970)
2918             cpuflags="-mcpu=970"
2919         ;;
2920         power[3-7]*)
2921             cpuflags="-mcpu=$cpu"
2922         ;;
2923         cell)
2924             cpuflags="-mcpu=cell"
2925             enable ldbrx
2926         ;;
2927         e500mc)
2928             cpuflags="-mcpu=e500mc"
2929             disable altivec
2930         ;;
2931         e500v2)
2932             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2933             disable altivec
2934         ;;
2935         e500)
2936             cpuflags="-mcpu=8540 -mhard-float"
2937             disable altivec
2938         ;;
2939     esac
2940
2941 elif enabled sparc; then
2942
2943     case $cpu in
2944         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2945             cpuflags="-mcpu=$cpu"
2946             disable vis
2947         ;;
2948         ultrasparc*|niagara[234])
2949             cpuflags="-mcpu=$cpu"
2950         ;;
2951     esac
2952
2953 elif enabled x86; then
2954
2955     case $cpu in
2956         i[345]86|pentium)
2957             cpuflags="-march=$cpu"
2958             disable mmx
2959         ;;
2960         # targets that do NOT support nopl and conditional mov (cmov)
2961         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2962             cpuflags="-march=$cpu"
2963             disable i686
2964         ;;
2965         # targets that do support nopl and conditional mov (cmov)
2966         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2967             cpuflags="-march=$cpu"
2968             enable i686
2969             enable fast_cmov
2970         ;;
2971         # targets that do support conditional mov but on which it's slow
2972         pentium4|pentium4m|prescott|nocona)
2973             cpuflags="-march=$cpu"
2974             enable i686
2975             disable fast_cmov
2976         ;;
2977     esac
2978
2979 fi
2980
2981 if [ "$cpu" != generic ]; then
2982     add_cflags  $cpuflags
2983     add_asflags $cpuflags
2984 fi
2985
2986 # compiler sanity check
2987 check_exec <<EOF
2988 int main(void){ return 0; }
2989 EOF
2990 if test "$?" != 0; then
2991     echo "$cc is unable to create an executable file."
2992     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2993         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2994         echo "Only do this if you know what cross compiling means."
2995     fi
2996     die "C compiler test failed."
2997 fi
2998
2999 add_cppflags -D_ISOC99_SOURCE
3000 check_cflags -std=c99
3001 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3002 #include <stdlib.h>
3003 EOF
3004 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3005 #include <stdlib.h>
3006 EOF
3007
3008 check_host_cflags -std=c99
3009 check_host_cflags -Wall
3010
3011 check_64bit(){
3012     arch32=$1
3013     arch64=$2
3014     expr=$3
3015     check_code cc "" "int test[2*($expr) - 1]" &&
3016         subarch=$arch64 || subarch=$arch32
3017 }
3018
3019 case "$arch" in
3020     aarch64|alpha|ia64)
3021         spic=$shared
3022     ;;
3023     mips)
3024         check_64bit mips mips64 '_MIPS_SIM > 1'
3025         spic=$shared
3026     ;;
3027     parisc)
3028         check_64bit parisc parisc64 'sizeof(void *) > 4'
3029         spic=$shared
3030     ;;
3031     ppc)
3032         check_64bit ppc ppc64 'sizeof(void *) > 4'
3033         spic=$shared
3034     ;;
3035     sparc)
3036         check_64bit sparc sparc64 'sizeof(void *) > 4'
3037         spic=$shared
3038     ;;
3039     x86)
3040         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3041         if test "$subarch" = "x86_64"; then
3042             spic=$shared
3043         fi
3044     ;;
3045 esac
3046
3047 enable $subarch
3048 enabled spic && enable_weak pic
3049
3050 # OS specific
3051 case $target_os in
3052     haiku)
3053         prefix_default="/boot/common"
3054         network_extralibs="-lnetwork"
3055         host_libs=
3056         ;;
3057     sunos)
3058         AVSERVERLDFLAGS=""
3059         SHFLAGS='-shared -Wl,-h,$$(@F)'
3060         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3061         network_extralibs="-lsocket -lnsl"
3062         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3063         # When using suncc to build, the Solaris linker will mark
3064         # an executable with each instruction set encountered by
3065         # the Solaris assembler.  As our libraries contain their own
3066         # guards for processor-specific code, instead suppress
3067         # generation of the HWCAPS ELF section on Solaris x86 only.
3068         enabled_all suncc x86 &&
3069             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3070             add_ldflags -Wl,-M,mapfile
3071         nm_default='nm -P -g'
3072         ;;
3073     netbsd)
3074         disable symver
3075         oss_indev_extralibs="-lossaudio"
3076         oss_outdev_extralibs="-lossaudio"
3077         ;;
3078     openbsd|bitrig)
3079         disable symver
3080         SHFLAGS='-shared'
3081         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3082         SLIB_INSTALL_LINKS=
3083         oss_indev_extralibs="-lossaudio"
3084         oss_outdev_extralibs="-lossaudio"
3085         ;;
3086     dragonfly)
3087         disable symver
3088         ;;
3089     freebsd)
3090         ;;
3091     bsd/os)
3092         add_extralibs -lpoll -lgnugetopt
3093         ;;
3094     darwin)
3095         gas="gas-preprocessor.pl $cc"
3096         enabled ppc && add_asflags -force_cpusubtype_ALL
3097         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3098         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3099         add_ldflags -Wl,-dynamic,-search_paths_first
3100         SLIBSUF=".dylib"
3101         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3102         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3103         AVSERVERLDFLAGS=-Wl,-bind_at_load
3104         objformat="macho"
3105         enabled x86_64 && objformat="macho64"
3106         enabled_any pic shared ||
3107             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3108         ;;
3109     mingw32*)
3110         if test $target_os = "mingw32ce"; then
3111             disable network
3112         else
3113             target_os=mingw32
3114         fi
3115         LIBTARGET=i386
3116         if enabled x86_64; then
3117             LIBTARGET="i386:x86-64"
3118         elif enabled arm; then
3119             LIBTARGET=arm-wince
3120         fi
3121         check_ldflags -Wl,--nxcompat
3122         check_ldflags -Wl,--dynamicbase
3123         shlibdir_default="$bindir_default"
3124         SLIBPREF=""
3125         SLIBSUF=".dll"
3126         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3127         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3128         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3129         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3130         SLIB_INSTALL_LINKS=
3131         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3132         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3133         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3134         objformat="win32"
3135         dlltool="${cross_prefix}dlltool"
3136         ranlib=:
3137         enable dos_paths
3138         ;;
3139     win32|win64)
3140         if enabled shared; then
3141             # Link to the import library instead of the normal static library
3142             # for shared libs.
3143             LD_LIB='%.lib'
3144             # Cannot build shared and static libs at the same time with MSVC.
3145             disable static
3146         fi
3147         shlibdir_default="$bindir_default"
3148         SLIBPREF=""
3149         SLIBSUF=".dll"
3150         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3151         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3152         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3153         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3154         SLIB_INSTALL_LINKS=
3155         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3156         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3157         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3158         objformat="win32"
3159         ranlib=:
3160         enable dos_paths
3161         ;;
3162     cygwin*)
3163         target_os=cygwin
3164         shlibdir_default="$bindir_default"
3165         SLIBPREF="cyg"
3166         SLIBSUF=".dll"
3167         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3168         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3169         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3170         SLIB_INSTALL_LINKS=
3171         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3172         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3173         objformat="win32"
3174         enable dos_paths
3175         ;;
3176     *-dos|freedos|opendos)
3177         network_extralibs="-lsocket"
3178         objformat="coff"
3179         enable dos_paths
3180         add_cppflags -U__STRICT_ANSI__
3181         ;;
3182     linux)
3183         enable dv1394
3184         ;;
3185     irix*)
3186         target_os=irix
3187         ranlib="echo ignoring ranlib"
3188         ;;
3189     os/2*)
3190         ln_s="cp -f"
3191         objformat="aout"
3192         add_cppflags -D_GNU_SOURCE
3193         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3194         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3195         AVSERVERLDFLAGS=""
3196         LIBSUF="_s.a"
3197         SLIBPREF=""
3198         SLIBSUF=".dll"
3199         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3200         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3201         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3202             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3203             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3204             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3205             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3206             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3207         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3208             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3209         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3210         enable dos_paths
3211         ;;
3212     gnu/kfreebsd)
3213         add_cppflags -D_BSD_SOURCE
3214         ;;
3215     gnu)
3216         ;;
3217     qnx)
3218         add_cppflags -D_QNX_SOURCE
3219         network_extralibs="-lsocket"
3220         ;;
3221     symbian)
3222         SLIBSUF=".dll"
3223         enable dos_paths
3224         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3225         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3226         add_ldflags -Wl,--target1-abs,--no-undefined \
3227                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3228                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3229         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3230                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3231                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3232         ;;
3233     osf1)
3234         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3235         AVSERVERLDFLAGS=
3236         ;;
3237     minix)
3238         ;;
3239     plan9)
3240         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3241                      -D_REENTRANT_SOURCE        \
3242                      -D_RESEARCH_SOURCE         \
3243                      -DFD_SETSIZE=96            \
3244                      -DHAVE_SOCK_OPTS
3245         add_compat strtod.o strtod=avpriv_strtod
3246         network_extralibs='-lbsd'
3247         exeobjs=compat/plan9/main.o
3248         disable avserver
3249         cp_f='cp'
3250         ;;
3251     none)
3252         ;;
3253     *)
3254         die "Unknown OS '$target_os'."
3255         ;;
3256 esac
3257
3258 # determine libc flavour
3259
3260 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3261 if check_cpp_condition features.h "defined __UCLIBC__"; then
3262     libc_type=uclibc
3263     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3264 elif check_cpp_condition features.h "defined __GLIBC__"; then
3265     libc_type=glibc
3266     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3267 # MinGW headers can be installed on Cygwin, so check for newlib first.
3268 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3269     libc_type=newlib
3270     add_cppflags -U__STRICT_ANSI__
3271 elif check_header _mingw.h; then
3272     libc_type=mingw
3273     check_cpp_condition _mingw.h \
3274         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3275             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3276         die "ERROR: MinGW runtime version must be >= 3.15."
3277     add_cppflags -U__STRICT_ANSI__
3278 elif check_func_headers stdlib.h _get_doserrno; then
3279     libc_type=msvcrt
3280     add_compat strtod.o strtod=avpriv_strtod
3281     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3282                                  _snprintf=avpriv_snprintf  \
3283                                  vsnprintf=avpriv_vsnprintf
3284     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3285     # 0x601 by default unless something else is set by the user.
3286     # This can easily lead to us detecting functions only present
3287     # in such new versions and producing binaries requiring windows 7.0.
3288     # Therefore explicitly set the default to XP unless the user has
3289     # set something else on the command line.
3290     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3291 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3292     libc_type=klibc
3293 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3294     libc_type=bionic
3295     add_compat strtod.o strtod=avpriv_strtod
3296 fi
3297
3298 test -n "$libc_type" && enable $libc_type
3299
3300 # hacks for compiler/libc/os combinations
3301
3302 if enabled_all tms470 glibc; then
3303     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3304     add_cppflags -D__USER_LABEL_PREFIX__=
3305     add_cppflags -D__builtin_memset=memset
3306     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3307     add_cflags   -pds=48    # incompatible redefinition of macro
3308 fi
3309
3310 if enabled_all ccc glibc; then
3311     add_ldflags -Wl,-z,now  # calls to libots crash without this
3312 fi
3313
3314 esc(){
3315     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3316 }
3317
3318 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3319
3320 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3321
3322 set_default $PATHS_LIST
3323 set_default nm
3324
3325 # we need to build at least one lib type
3326 if ! enabled_any static shared; then
3327     cat <<EOF
3328 At least one library type must be built.
3329 Specify --enable-static to build the static libraries or --enable-shared to
3330 build the shared libraries as well. To only build the shared libraries specify
3331 --disable-static in addition to --enable-shared.
3332 EOF
3333     exit 1;
3334 fi
3335
3336 die_license_disabled() {
3337     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3338 }
3339
3340 die_license_disabled gpl libcdio
3341 die_license_disabled gpl libx264
3342 die_license_disabled gpl libxavs
3343 die_license_disabled gpl libxvid
3344 die_license_disabled gpl x11grab
3345
3346 die_license_disabled nonfree libfaac
3347 die_license_disabled nonfree libfdk_aac
3348 die_license_disabled nonfree openssl
3349
3350 die_license_disabled version3 libopencore_amrnb
3351 die_license_disabled version3 libopencore_amrwb
3352 die_license_disabled version3 libvo_aacenc
3353 die_license_disabled version3 libvo_amrwbenc
3354
3355 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3356
3357 disabled optimizations || check_cflags -fomit-frame-pointer
3358
3359 enable_weak_pic() {
3360     disabled pic && return
3361     enable pic
3362     add_cppflags -DPIC
3363     case "$target_os" in
3364     mingw*|cygwin*)
3365         ;;
3366     *)
3367         add_cflags -fPIC
3368         ;;
3369     esac
3370     add_asflags  -fPIC
3371 }
3372
3373 enabled pic && enable_weak_pic
3374
3375 check_cc <<EOF || die "Symbol mangling check failed."
3376 int ff_extern;
3377 EOF
3378 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3379 extern_prefix=${sym%%ff_extern*}
3380
3381 check_cc <<EOF && enable_weak inline_asm
3382 void foo(void) { __asm__ volatile ("" ::); }
3383 EOF
3384
3385 _restrict=
3386 for restrict_keyword in restrict __restrict__ __restrict; do
3387     check_cc <<EOF && _restrict=$restrict_keyword && break
3388 void foo(char * $restrict_keyword p);
3389 EOF
3390 done
3391
3392 check_cc <<EOF && enable attribute_packed
3393 struct { int x; } __attribute__((packed)) x;
3394 EOF
3395
3396 check_cc <<EOF && enable attribute_may_alias
3397 union { int x; } __attribute__((may_alias)) x;
3398 EOF
3399
3400 check_cc <<EOF || die "endian test failed"
3401 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3402 EOF
3403 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3404
3405 if enabled alpha; then
3406
3407     check_cflags -mieee
3408
3409 elif enabled arm; then
3410
3411     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3412     enabled thumb && check_cflags -mthumb || check_cflags -marm
3413     nogas=die
3414
3415     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3416         enable vfp_args
3417     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3418         case "${cross_prefix:-$cc}" in
3419             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3420             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3421 __asm__ (".eabi_attribute 28, 1");
3422 int main(void) { return 0; }
3423 EOF
3424         esac
3425         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3426     fi
3427
3428     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3429     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3430     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3431     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3432     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3433     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3434
3435     [ $target_os = linux ] ||
3436         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3437             $ARCH_EXT_LIST_ARM
3438
3439     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3440     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3441
3442     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3443
3444 elif enabled mips; then
3445
3446     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3447
3448 elif enabled parisc; then
3449
3450     if enabled gcc; then
3451         case $($cc -dumpversion) in
3452             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3453         esac
3454     fi
3455
3456 elif enabled ppc; then
3457
3458     enable local_aligned_8 local_aligned_16
3459
3460     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3461     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3462     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3463     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3464
3465     # AltiVec flags: The FSF version of GCC differs from the Apple version
3466     if enabled altivec; then
3467         nogas=warn
3468         check_cflags -maltivec -mabi=altivec &&
3469         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3470         check_cflags -faltivec
3471
3472         # check if our compiler supports Motorola AltiVec C API
3473         check_cc <<EOF || disable altivec
3474 $inc_altivec_h
3475 int main(void) {
3476     vector signed int v1 = (vector signed int) { 0 };
3477     vector signed int v2 = (vector signed int) { 1 };
3478     v1 = vec_add(v1, v2);
3479     return 0;
3480 }
3481 EOF
3482
3483         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3484     fi
3485
3486 elif enabled sparc; then
3487
3488     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3489
3490 elif enabled x86; then
3491
3492     check_builtin rdtsc    intrin.h   "__rdtsc()"
3493     check_builtin mm_empty mmintrin.h "_mm_empty()"
3494
3495     enable local_aligned_8 local_aligned_16
3496
3497     # check whether EBP is available on x86
3498     # As 'i' is stored on the stack, this program will crash
3499     # if the base pointer is used to access it because the
3500     # base pointer is cleared in the inline assembly code.
3501     check_exec_crash <<EOF && enable ebp_available
3502 volatile int i=0;
3503 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3504 return i;
3505 EOF
3506
3507     # check whether EBX is available on x86
3508     check_inline_asm ebx_available '""::"b"(0)' &&
3509         check_inline_asm ebx_available '"":::"%ebx"'
3510
3511     # check whether xmm clobbers are supported
3512     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3513
3514     # check whether binutils is new enough to compile SSSE3/MMXEXT
3515     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3516     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3517
3518     if ! disabled_any asm mmx yasm; then
3519         if check_cmd $yasmexe --version; then
3520             enabled x86_64 && yasm_extra="-m amd64"
3521             yasm_debug="-g dwarf2"
3522         elif check_cmd nasm -v; then
3523             yasmexe=nasm
3524             yasm_debug="-g -F dwarf"
3525             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3526         fi
3527
3528         YASMFLAGS="-f $objformat $yasm_extra"
3529         enabled pic               && append YASMFLAGS "-DPIC"
3530         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3531         case "$objformat" in
3532             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3533         esac
3534
3535         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3536             die "yasm not found, use --disable-yasm for a crippled build"
3537         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3538         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3539     fi
3540
3541     case "$cpu" in
3542         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3543             disable fast_clz
3544         ;;
3545     esac
3546
3547 fi
3548
3549 if enabled asm; then
3550     as=${gas:=$as}
3551     check_as <<EOF && enable gnu_as || \
3552         $nogas "GNU assembler not found, install gas-preprocessor"
3553 .macro m n
3554 \n: .int 0
3555 .endm
3556 m x
3557 EOF
3558 fi
3559
3560 check_ldflags -Wl,--as-needed
3561
3562 if check_func dlopen; then
3563     ldl=
3564 elif check_func dlopen -ldl; then
3565     ldl=-ldl
3566 fi
3567
3568 if ! disabled network; then
3569     check_type "sys/types.h sys/socket.h" socklen_t
3570     check_type netdb.h "struct addrinfo"
3571     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3572     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3573     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3574     check_type netinet/in.h "struct sockaddr_in6"
3575     check_type poll.h "struct pollfd"
3576     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3577     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3578     check_type netinet/sctp.h "struct sctp_event_subscribe"
3579     check_func getaddrinfo $network_extralibs
3580     check_func getservbyport $network_extralibs
3581     # Prefer arpa/inet.h over winsock2
3582     if check_header arpa/inet.h ; then
3583         check_func closesocket
3584     elif check_header winsock2.h ; then
3585         check_func_headers winsock2.h closesocket -lws2 &&
3586             network_extralibs="-lws2" ||
3587         { check_func_headers winsock2.h closesocket -lws2_32 &&
3588             network_extralibs="-lws2_32"; }
3589         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3590         check_type ws2tcpip.h socklen_t
3591         check_type ws2tcpip.h "struct addrinfo"
3592         check_type ws2tcpip.h "struct group_source_req"
3593         check_type ws2tcpip.h "struct ip_mreq_source"
3594         check_type ws2tcpip.h "struct ipv6_mreq"
3595         check_type winsock2.h "struct pollfd"
3596         check_type ws2tcpip.h "struct sockaddr_in6"
3597         check_type ws2tcpip.h "struct sockaddr_storage"
3598         check_struct winsock2.h "struct sockaddr" sa_len
3599     else
3600         disable network
3601     fi
3602 fi
3603
3604 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3605 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3606
3607 check_func  fcntl
3608 check_func  fork
3609 check_func_headers stdlib.h getenv
3610 check_func  gethrtime
3611 check_func  getopt
3612 check_func  getrusage
3613 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3614 check_func  gettimeofday
3615 check_func  inet_aton $network_extralibs
3616 check_func  isatty
3617 check_func  localtime_r
3618 check_func  ${malloc_prefix}memalign            && enable memalign
3619 check_func  mkstemp
3620 check_func  mmap
3621 check_func  mprotect
3622 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3623 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3624 check_func  setrlimit
3625 check_func  strerror_r
3626 check_func  strptime
3627 check_func  strtok_r
3628 check_func  sched_getaffinity
3629 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3630 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3631 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3632 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3633 check_func  sysconf
3634 check_func  sysctl
3635 check_func  usleep
3636 check_func_headers io.h setmode
3637 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3638 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3639 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3640 check_func_headers windows.h GetProcessAffinityMask
3641 check_func_headers windows.h GetProcessTimes
3642 check_func_headers windows.h GetSystemTimeAsFileTime
3643 check_func_headers windows.h MapViewOfFile
3644 check_func_headers windows.h SetConsoleTextAttribute
3645 check_func_headers windows.h Sleep
3646 check_func_headers windows.h VirtualAlloc
3647
3648 check_header direct.h
3649 check_header dlfcn.h
3650 check_header dxva.h
3651 check_header dxva2api.h
3652 check_header io.h
3653 check_header malloc.h
3654 check_header poll.h
3655 check_header sys/mman.h
3656 check_header sys/param.h
3657 check_header sys/resource.h
3658 check_header sys/select.h
3659 check_header sys/time.h
3660 check_header unistd.h
3661 check_header vdpau/vdpau.h
3662 check_header vdpau/vdpau_x11.h
3663 check_header VideoDecodeAcceleration/VDADecoder.h
3664 check_header windows.h
3665 check_header X11/extensions/XvMClib.h
3666
3667 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3668 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3669
3670 if ! disabled w32threads && ! enabled pthreads; then
3671     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3672 fi
3673
3674 # check for some common methods of building with pthread support
3675 # do this before the optional library checks as some of them require pthreads
3676 if ! disabled pthreads && ! enabled w32threads; then
3677     enable pthreads
3678     if check_func pthread_create; then
3679         :
3680     elif check_func pthread_create -pthread; then
3681         add_cflags -pthread
3682         add_extralibs -pthread
3683     elif check_func pthread_create -pthreads; then
3684         add_cflags -pthreads
3685         add_extralibs -pthreads
3686     elif check_func pthread_create -lpthreadGC2; then
3687         add_extralibs -lpthreadGC2
3688     elif ! check_lib pthread.h pthread_create -lpthread; then
3689         disable pthreads
3690     fi
3691 fi
3692
3693 for thread in $THREADS_LIST; do
3694     if enabled $thread; then
3695         test -n "$thread_type" &&
3696             die "ERROR: Only one thread type must be selected." ||
3697             thread_type="$thread"
3698     fi
3699 done
3700
3701 enabled sync_val_compare_and_swap && enable atomics_gcc
3702 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
3703 enabled MemoryBarrier && enable atomics_win32
3704
3705 check_lib math.h sin -lm && LIBM="-lm"
3706 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3707
3708 atan2f_args=2
3709 ldexpf_args=2
3710 powf_args=2
3711
3712 for func in $MAT