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-lsp            disable LSP code
 126   --disable-lzo            disable LZO decoder code
 127   --disable-mdct           disable MDCT code
 128   --disable-rdft           disable RDFT code
 129   --disable-fft            disable FFT code
 130
 131 Hardware accelerators:
 132   --enable-dxva2           enable DXVA2 code
 133   --enable-vaapi           enable VAAPI code
 134   --enable-vda             enable VDA code
 135   --enable-vdpau           enable VDPAU code
 136
 137 Individual component options:
 138   --disable-everything     disable all components listed below
 139   --disable-encoder=NAME   disable encoder NAME
 140   --enable-encoder=NAME    enable encoder NAME
 141   --disable-encoders       disable all encoders
 142   --disable-decoder=NAME   disable decoder NAME
 143   --enable-decoder=NAME    enable decoder NAME
 144   --disable-decoders       disable all decoders
 145   --disable-hwaccel=NAME   disable hwaccel NAME
 146   --enable-hwaccel=NAME    enable hwaccel NAME
 147   --disable-hwaccels       disable all hwaccels
 148   --disable-muxer=NAME     disable muxer NAME
 149   --enable-muxer=NAME      enable muxer NAME
 150   --disable-muxers         disable all muxers
 151   --disable-demuxer=NAME   disable demuxer NAME
 152   --enable-demuxer=NAME    enable demuxer NAME
 153   --disable-demuxers       disable all demuxers
 154   --enable-parser=NAME     enable parser NAME
 155   --disable-parser=NAME    disable parser NAME
 156   --disable-parsers        disable all parsers
 157   --enable-bsf=NAME        enable bitstream filter NAME
 158   --disable-bsf=NAME       disable bitstream filter NAME
 159   --disable-bsfs           disable all bitstream filters
 160   --enable-protocol=NAME   enable protocol NAME
 161   --disable-protocol=NAME  disable protocol NAME
 162   --disable-protocols      disable all protocols
 163   --enable-indev=NAME      enable input device NAME
 164   --disable-indev=NAME     disable input device NAME
 165   --disable-indevs         disable input devices
 166   --enable-outdev=NAME     enable output device NAME
 167   --disable-outdev=NAME    disable output device NAME
 168   --disable-outdevs        disable output devices
 169   --disable-devices        disable all devices
 170   --enable-filter=NAME     enable filter NAME
 171   --disable-filter=NAME    disable filter NAME
 172   --disable-filters        disable all filters
 173
 174 External library support:
 175   --enable-avisynth        enable reading of AVISynth script files [no]
 176   --enable-bzlib           enable bzlib [autodetect]
 177   --enable-frei0r          enable frei0r video filtering
 178   --enable-gnutls          enable gnutls [no]
 179   --enable-libcdio         enable audio CD grabbing with libcdio
 180   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 181                            and libraw1394 [no]
 182   --enable-libfaac         enable AAC encoding via libfaac [no]
 183   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 184   --enable-libfreetype     enable libfreetype [no]
 185   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 186   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 187   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 188   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 189   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 190   --enable-libopencv       enable video filtering via libopencv [no]
 191   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 192   --enable-libopus         enable Opus decoding via libopus [no]
 193   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 194   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 195   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 196   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 197   --enable-libtheora       enable Theora encoding via libtheora [no]
 198   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 199   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 200   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 201   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 202   --enable-libx264         enable H.264 encoding via x264 [no]
 203   --enable-libxavs         enable AVS encoding via xavs [no]
 204   --enable-libxvid         enable Xvid encoding via xvidcore,
 205                            native MPEG-4/Xvid encoder exists [no]
 206   --enable-openssl         enable openssl [no]
 207   --enable-x11grab         enable X11 grabbing [no]
 208   --enable-zlib            enable zlib [autodetect]
 209
 210 Advanced options (experts only):
 211   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 212   --enable-cross-compile   assume a cross-compiler is used
 213   --sysroot=PATH           root of cross-build tree
 214   --sysinclude=PATH        location of cross-build system headers
 215   --target-os=OS           compiler targets OS [$target_os]
 216   --target-exec=CMD        command to run executables on target
 217   --target-path=DIR        path to view of build directory on target
 218   --toolchain=NAME         set tool defaults according to NAME
 219   --nm=NM                  use nm tool
 220   --ar=AR                  use archive tool AR [$ar_default]
 221   --as=AS                  use assembler AS [$as_default]
 222   --cc=CC                  use C compiler CC [$cc_default]
 223   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 224   --ld=LD                  use linker LD
 225   --host-cc=HOSTCC         use host C compiler HOSTCC
 226   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 227   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 228   --host-ld=HOSTLD         use host linker HOSTLD
 229   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 230   --host-libs=HLIBS        use libs HLIBS when linking for host
 231   --host-os=OS             compiler host OS [$target_os]
 232   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 233   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 234   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 235   --extra-version=STRING   version string suffix []
 236   --optflags=OPTFLAGS      override optimization-related compiler flags
 237   --build-suffix=SUFFIX    library name suffix []
 238   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 239   --arch=ARCH              select architecture [$arch]
 240   --cpu=CPU                select the minimum required CPU (affects
 241                            instruction selection, may crash on older CPUs)
 242   --enable-pic             build position-independent code
 243   --enable-sram            allow use of on-chip SRAM
 244   --enable-thumb           compile for Thumb instruction set
 245   --disable-symver         disable symbol versioning
 246   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 247   --disable-safe-bitstream-reader
 248                            disable buffer boundary checking in bitreaders
 249                            (faster, but may crash)
 250   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 251   --enable-lto             use link-time optimization
 252
 253 Optimization options (experts only):
 254   --disable-asm            disable all assembler optimizations
 255   --disable-altivec        disable AltiVec optimizations
 256   --disable-amd3dnow       disable 3DNow! optimizations
 257   --disable-amd3dnowext    disable 3DNow! extended optimizations
 258   --disable-mmx            disable MMX optimizations
 259   --disable-mmxext         disable MMXEXT optimizations
 260   --disable-sse            disable SSE optimizations
 261   --disable-sse2           disable SSE2 optimizations
 262   --disable-sse3           disable SSE3 optimizations
 263   --disable-ssse3          disable SSSE3 optimizations
 264   --disable-sse4           disable SSE4 optimizations
 265   --disable-sse42          disable SSE4.2 optimizations
 266   --disable-avx            disable AVX optimizations
 267   --disable-fma4           disable FMA4 optimizations
 268   --disable-armv5te        disable armv5te optimizations
 269   --disable-armv6          disable armv6 optimizations
 270   --disable-armv6t2        disable armv6t2 optimizations
 271   --disable-vfp            disable VFP optimizations
 272   --disable-neon           disable NEON optimizations
 273   --disable-vis            disable VIS optimizations
 274   --disable-inline-asm     disable use of inline assembler
 275   --disable-yasm           disable use of yasm assembler
 276
 277 Developer options (useful when working on Libav itself):
 278   --disable-debug          disable debugging symbols
 279   --enable-debug=LEVEL     set the debug level [$debuglevel]
 280   --disable-optimizations  disable compiler optimizations
 281   --enable-extra-warnings  enable more compiler warnings
 282   --samples=PATH           location of test samples for FATE, if not set use
 283                            \$LIBAV_SAMPLES at make invocation time.
 284   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 285                            should be used only for debugging purposes)
 286   --enable-random          randomly enable/disable components
 287   --disable-random
 288   --enable-random=LIST     randomly enable/disable specific components or
 289   --disable-random=LIST    component groups. LIST is a comma-separated list
 290                            of NAME[:PROB] entries where NAME is a component
 291                            (group) and PROB the probability associated with
 292                            NAME (default 0.5).
 293   --random-seed=VALUE      seed value for --enable/disable-random
 294
 295 NOTE: Object files are built at the place where configure is launched.
 296 EOF
 297   exit 0
 298 }
 299
 300 quotes='""'
 301
 302 log(){
 303     echo "$@" >> $logfile
 304 }
 305
 306 log_file(){
 307     log BEGIN $1
 308     pr -n -t $1 >> $logfile
 309     log END $1
 310 }
 311
 312 echolog(){
 313     log "$@"
 314     echo "$@"
 315 }
 316
 317 warn(){
 318     log "WARNING: $*"
 319     WARNINGS="${WARNINGS}WARNING: $*\n"
 320 }
 321
 322 die(){
 323     echolog "$@"
 324     cat <<EOF
 325
 326 If you think configure made a mistake, make sure you are using the latest
 327 version from Git.  If the latest version fails, report the problem to the
 328 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
 329 EOF
 330     if disabled logging; then
 331         cat <<EOF
 332 Rerun configure with logging enabled (do not use --disable-logging), and
 333 include the log this produces with your report.
 334 EOF
 335     else
 336         cat <<EOF
 337 Include the log file "$logfile" produced by configure as this will help
 338 solving the problem.
 339 EOF
 340     fi
 341     exit 1
 342 }
 343
 344 # Avoid locale weirdness, besides we really just want to translate ASCII.
 345 toupper(){
 346     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 347 }
 348
 349 tolower(){
 350     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 351 }
 352
 353 c_escape(){
 354     echo "$*" | sed 's/["\\]/\\\0/g'
 355 }
 356
 357 sh_quote(){
 358     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 359     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 360     echo "$v"
 361 }
 362
 363 cleanws(){
 364     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 365 }
 366
 367 filter(){
 368     pat=$1
 369     shift
 370     for v; do
 371         eval "case $v in $pat) echo $v ;; esac"
 372     done
 373 }
 374
 375 filter_out(){
 376     pat=$1
 377     shift
 378     for v; do
 379         eval "case $v in $pat) ;; *) echo $v ;; esac"
 380     done
 381 }
 382
 383 map(){
 384     m=$1
 385     shift
 386     for v; do eval $m; done
 387 }
 388
 389 add_suffix(){
 390     suffix=$1
 391     shift
 392     for v; do echo ${v}${suffix}; done
 393 }
 394
 395 set_all(){
 396     value=$1
 397     shift
 398     for var in $*; do
 399         eval $var=$value
 400     done
 401 }
 402
 403 set_weak(){
 404     value=$1
 405     shift
 406     for var; do
 407         eval : \${$var:=$value}
 408     done
 409 }
 410
 411 sanitize_var_name(){
 412     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 413 }
 414
 415 set_safe(){
 416     var=$1
 417     shift
 418     eval $(sanitize_var_name "$var")='$*'
 419 }
 420
 421 get_safe(){
 422     eval echo \$$(sanitize_var_name "$1")
 423 }
 424
 425 pushvar(){
 426     for var in $*; do
 427         eval level=\${${var}_level:=0}
 428         eval ${var}_${level}="\$$var"
 429         eval ${var}_level=$(($level+1))
 430     done
 431 }
 432
 433 popvar(){
 434     for var in $*; do
 435         eval level=\${${var}_level:-0}
 436         test $level = 0 && continue
 437         eval level=$(($level-1))
 438         eval $var="\${${var}_${level}}"
 439         eval ${var}_level=$level
 440         eval unset ${var}_${level}
 441     done
 442 }
 443
 444 enable(){
 445     set_all yes $*
 446 }
 447
 448 disable(){
 449     set_all no $*
 450 }
 451
 452 enable_weak(){
 453     set_weak yes $*
 454 }
 455
 456 disable_weak(){
 457     set_weak no $*
 458 }
 459
 460 enable_safe(){
 461     for var; do
 462         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 463     done
 464 }
 465
 466 disable_safe(){
 467     for var; do
 468         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 469     done
 470 }
 471
 472 do_enable_deep(){
 473     for var; do
 474         enabled $var && continue
 475         eval sel="\$${var}_select"
 476         eval sgs="\$${var}_suggest"
 477         pushvar var sgs
 478         enable_deep $sel
 479         popvar sgs
 480         enable_deep_weak $sgs
 481         popvar var
 482     done
 483 }
 484
 485 enable_deep(){
 486     do_enable_deep $*
 487     enable $*
 488 }
 489
 490 enable_deep_weak(){
 491     do_enable_deep $*
 492     enable_weak $*
 493 }
 494
 495 enabled(){
 496     test "${1#!}" = "$1" && op== || op=!=
 497     eval test "x\$${1#!}" $op "xyes"
 498 }
 499
 500 disabled(){
 501     test "${1#!}" = "$1" && op== || op=!=
 502     eval test "x\$${1#!}" $op "xno"
 503 }
 504
 505 enabled_all(){
 506     for opt; do
 507         enabled $opt || return 1
 508     done
 509 }
 510
 511 disabled_all(){
 512     for opt; do
 513         disabled $opt || return 1
 514     done
 515 }
 516
 517 enabled_any(){
 518     for opt; do
 519         enabled $opt && return 0
 520     done
 521 }
 522
 523 disabled_any(){
 524     for opt; do
 525         disabled $opt && return 0
 526     done
 527     return 1
 528 }
 529
 530 set_default(){
 531     for opt; do
 532         eval : \${$opt:=\$${opt}_default}
 533     done
 534 }
 535
 536 is_in(){
 537     value=$1
 538     shift
 539     for var in $*; do
 540         [ $var = $value ] && return 0
 541     done
 542     return 1
 543 }
 544
 545 do_check_deps(){
 546     for cfg; do
 547         cfg="${cfg#!}"
 548         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 549         disabled ${cfg}_checking && continue
 550         enable ${cfg}_checking
 551         append allopts $cfg
 552
 553         eval dep_all="\$${cfg}_deps"
 554         eval dep_any="\$${cfg}_deps_any"
 555         eval dep_sel="\$${cfg}_select"
 556         eval dep_sgs="\$${cfg}_suggest"
 557         eval dep_ifa="\$${cfg}_if"
 558         eval dep_ifn="\$${cfg}_if_any"
 559
 560         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 561         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 562         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 563
 564         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 565         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 566         enabled_all  $dep_all || disable $cfg
 567         enabled_any  $dep_any || disable $cfg
 568         disabled_any $dep_sel && disable $cfg
 569
 570         if enabled $cfg; then
 571             enable_deep $dep_sel
 572             enable_deep_weak $dep_sgs
 573         fi
 574
 575         disable ${cfg}_checking
 576     done
 577 }
 578
 579 check_deps(){
 580     unset allopts
 581
 582     do_check_deps "$@"
 583
 584     for cfg in $allopts; do
 585         enabled $cfg || continue
 586         eval dep_extralibs="\$${cfg}_extralibs"
 587         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 588     done
 589 }
 590
 591 print_config(){
 592     pfx=$1
 593     files=$2
 594     shift 2
 595     map 'eval echo "$v \${$v:-no}"' "$@" |
 596     awk "BEGIN { split(\"$files\", files) }
 597         {
 598             c = \"$pfx\" toupper(\$1);
 599             v = \$2;
 600             sub(/yes/, 1, v);
 601             sub(/no/,  0, v);
 602             for (f in files) {
 603                 file = files[f];
 604                 if (file ~ /\\.h\$/) {
 605                     printf(\"#define %s %d\\n\", c, v) >>file;
 606                 } else if (file ~ /\\.asm\$/) {
 607                     printf(\"%%define %s %d\\n\", c, v) >>file;
 608                 } else if (file ~ /\\.mak\$/) {
 609                     n = -v ? \"\" : \"!\";
 610                     printf(\"%s%s=yes\\n\", n, c) >>file;
 611                 }
 612             }
 613         }"
 614 }
 615
 616 print_enabled(){
 617     suf=$1
 618     shift
 619     for v; do
 620         enabled $v && printf "%s\n" ${v%$suf};
 621     done
 622 }
 623
 624 append(){
 625     var=$1
 626     shift
 627     eval "$var=\"\$$var $*\""
 628 }
 629
 630 prepend(){
 631     var=$1
 632     shift
 633     eval "$var=\"$* \$$var\""
 634 }
 635
 636 add_cppflags(){
 637     append CPPFLAGS "$@"
 638 }
 639
 640 add_cflags(){
 641     append CFLAGS $($cflags_filter "$@")
 642 }
 643
 644 add_asflags(){
 645     append ASFLAGS $($asflags_filter "$@")
 646 }
 647
 648 add_ldflags(){
 649     append LDFLAGS $($ldflags_filter "$@")
 650 }
 651
 652 add_extralibs(){
 653     prepend extralibs $($ldflags_filter "$@")
 654 }
 655
 656 add_host_cppflags(){
 657     append host_cppflags "$@"
 658 }
 659
 660 add_host_cflags(){
 661     append host_cflags $($host_cflags_filter "$@")
 662 }
 663
 664 add_host_ldflags(){
 665     append host_ldflags $($host_ldflags_filter "$@")
 666 }
 667
 668 add_compat(){
 669     append compat_objs $1
 670     shift
 671     map 'add_cppflags -D$v' "$@"
 672 }
 673
 674 check_cmd(){
 675     log "$@"
 676     "$@" >> $logfile 2>&1
 677 }
 678
 679 cc_o(){
 680     eval printf '%s\\n' $CC_O
 681 }
 682
 683 cc_e(){
 684     eval printf '%s\\n' $CC_E
 685 }
 686
 687 check_cc(){
 688     log check_cc "$@"
 689     cat > $TMPC
 690     log_file $TMPC
 691     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 692 }
 693
 694 check_cpp(){
 695     log check_cpp "$@"
 696     cat > $TMPC
 697     log_file $TMPC
 698     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 699 }
 700
 701 as_o(){
 702     eval printf '%s\\n' $AS_O
 703 }
 704
 705 check_as(){
 706     log check_as "$@"
 707     cat > $TMPS
 708     log_file $TMPS
 709     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 710 }
 711
 712 check_inline_asm(){
 713     log check_inline_asm "$@"
 714     name="$1"
 715     code="$2"
 716     shift 2
 717     disable $name
 718     check_cc "$@" <<EOF && enable $name
 719 void foo(void){ __asm__ volatile($code); }
 720 EOF
 721 }
 722
 723 check_insn(){
 724     log check_insn "$@"
 725     check_inline_asm ${1}_inline "\"$2\""
 726     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 727 }
 728
 729 check_yasm(){
 730     log check_yasm "$@"
 731     echo "$1" > $TMPS
 732     log_file $TMPS
 733     shift 1
 734     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 735 }
 736
 737 ld_o(){
 738     eval printf '%s\\n' $LD_O
 739 }
 740
 741 check_ld(){
 742     log check_ld "$@"
 743     flags=$(filter_out '-l*' "$@")
 744     libs=$(filter '-l*' "$@")
 745     check_cc $($cflags_filter $flags) || return
 746     flags=$($ldflags_filter $flags)
 747     libs=$($ldflags_filter $libs)
 748     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 749 }
 750
 751 check_code(){
 752     log check_code "$@"
 753     check=$1
 754     headers=$2
 755     code=$3
 756     shift 3
 757     {
 758         for hdr in $headers; do
 759             echo "#include <$hdr>"
 760         done
 761         echo "int main(void) { $code; return 0; }"
 762     } | check_$check "$@"
 763 }
 764
 765 check_cppflags(){
 766     log check_cppflags "$@"
 767     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 768 int x;
 769 EOF
 770 }
 771
 772 check_cflags(){
 773     log check_cflags "$@"
 774     set -- $($cflags_filter "$@")
 775     check_cc "$@" <<EOF && append CFLAGS "$@"
 776 int x;
 777 EOF
 778 }
 779
 780 test_ldflags(){
 781     log test_ldflags "$@"
 782     check_ld "$@" <<EOF
 783 int main(void){ return 0; }
 784 EOF
 785 }
 786
 787 check_ldflags(){
 788     log check_ldflags "$@"
 789     test_ldflags "$@" && add_ldflags "$@"
 790 }
 791
 792 check_header(){
 793     log check_header "$@"
 794     header=$1
 795     shift
 796     disable_safe $header
 797     check_cpp "$@" <<EOF && enable_safe $header
 798 #include <$header>
 799 int x;
 800 EOF
 801 }
 802
 803 check_func(){
 804     log check_func "$@"
 805     func=$1
 806     shift
 807     disable $func
 808     check_ld "$@" <<EOF && enable $func
 809 extern int $func();
 810 int main(void){ $func(); }
 811 EOF
 812 }
 813
 814 check_mathfunc(){
 815     log check_mathfunc "$@"
 816     func=$1
 817     narg=$2
 818     shift 2
 819     test $narg = 2 && args="f, g" || args="f"
 820     disable $func
 821     check_ld "$@" <<EOF && enable $func
 822 #include <math.h>
 823 float foo(float f, float g) { return $func($args); }
 824 int main(void){ return 0; }
 825 EOF
 826 }
 827
 828 check_func_headers(){
 829     log check_func_headers "$@"
 830     headers=$1
 831     funcs=$2
 832     shift 2
 833     {
 834         for hdr in $headers; do
 835             echo "#include <$hdr>"
 836         done
 837         for func in $funcs; do
 838             echo "long check_$func(void) { return (long) $func; }"
 839         done
 840         echo "int main(void) { return 0; }"
 841     } | check_ld "$@" && enable $funcs && enable_safe $headers
 842 }
 843
 844 check_cpp_condition(){
 845     log check_cpp_condition "$@"
 846     header=$1
 847     condition=$2
 848     shift 2
 849     check_cpp "$@" <<EOF
 850 #include <$header>
 851 #if !($condition)
 852 #error "unsatisfied condition: $condition"
 853 #endif
 854 EOF
 855 }
 856
 857 check_lib(){
 858     log check_lib "$@"
 859     header="$1"
 860     func="$2"
 861     shift 2
 862     check_header $header && check_func $func "$@" && add_extralibs "$@"
 863 }
 864
 865 check_lib2(){
 866     log check_lib2 "$@"
 867     headers="$1"
 868     funcs="$2"
 869     shift 2
 870     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 871 }
 872
 873 check_pkg_config(){
 874     log check_pkg_config "$@"
 875     pkg="$1"
 876     headers="$2"
 877     funcs="$3"
 878     shift 3
 879     $pkg_config --exists $pkg || return
 880     pkg_cflags=$($pkg_config --cflags $pkg)
 881     pkg_libs=$($pkg_config --libs $pkg)
 882     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 883         set_safe ${pkg}_cflags $pkg_cflags   &&
 884         set_safe ${pkg}_libs   $pkg_libs
 885 }
 886
 887 check_exec(){
 888     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 889 }
 890
 891 check_exec_crash(){
 892     code=$(cat)
 893
 894     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 895     # are safe but may not be available everywhere.  Thus we use
 896     # raise(SIGTERM) instead.  The check is run in a subshell so we
 897     # can redirect the "Terminated" message from the shell.  SIGBUS
 898     # is not defined by standard C so it is used conditionally.
 899
 900     (check_exec "$@") >> $logfile 2>&1 <<EOF
 901 #include <signal.h>
 902 static void sighandler(int sig){
 903     raise(SIGTERM);
 904 }
 905 int foo(void){
 906     $code
 907 }
 908 int main(void){
 909     signal(SIGILL, sighandler);
 910     signal(SIGFPE, sighandler);
 911     signal(SIGSEGV, sighandler);
 912 #ifdef SIGBUS
 913     signal(SIGBUS, sighandler);
 914 #endif
 915     foo();
 916 }
 917 EOF
 918 }
 919
 920 check_type(){
 921     log check_type "$@"
 922     headers=$1
 923     type=$2
 924     shift 2
 925     disable_safe "$type"
 926     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 927 }
 928
 929 check_struct(){
 930     log check_struct "$@"
 931     headers=$1
 932     struct=$2
 933     member=$3
 934     shift 3
 935     disable_safe "${struct}_${member}"
 936     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 937         enable_safe "${struct}_${member}"
 938 }
 939
 940 check_builtin(){
 941     log check_builtin "$@"
 942     name=$1
 943     headers=$2
 944     builtin=$3
 945     shift 3
 946     disable "$name"
 947     check_code ld "$headers" "$builtin" "$@" && enable "$name"
 948 }
 949
 950 require(){
 951     name="$1"
 952     header="$2"
 953     func="$3"
 954     shift 3
 955     check_lib $header $func "$@" || die "ERROR: $name not found"
 956 }
 957
 958 require2(){
 959     name="$1"
 960     headers="$2"
 961     func="$3"
 962     shift 3
 963     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
 964 }
 965
 966 require_pkg_config(){
 967     pkg="$1"
 968     check_pkg_config "$@" || die "ERROR: $pkg not found"
 969     add_cflags    $(get_safe ${pkg}_cflags)
 970     add_extralibs $(get_safe ${pkg}_libs)
 971 }
 972
 973 hostcc_o(){
 974     eval printf '%s\\n' $HOSTCC_O
 975 }
 976
 977 check_host_cc(){
 978     log check_host_cc "$@"
 979     cat > $TMPC
 980     log_file $TMPC
 981     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
 982 }
 983
 984 check_host_cppflags(){
 985     log check_host_cppflags "$@"
 986     check_host_cc "$@" <<EOF && append host_cppflags "$@"
 987 int x;
 988 EOF
 989 }
 990
 991 check_host_cflags(){
 992     log check_host_cflags "$@"
 993     set -- $($host_cflags_filter "$@")
 994     check_host_cc "$@" <<EOF && append host_cflags "$@"
 995 int x;
 996 EOF
 997 }
 998
 999 apply(){
1000     file=$1
1001     shift
1002     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1003 }
1004
1005 cp_if_changed(){
1006     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1007     mkdir -p "$(dirname $2)"
1008     $cp_f "$1" "$2"
1009 }
1010
1011 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1012 # system-dependent things.
1013
1014 COMPONENT_LIST="
1015     bsfs
1016     decoders
1017     demuxers
1018     encoders
1019     filters
1020     hwaccels
1021     indevs
1022     muxers
1023     outdevs
1024     parsers
1025     protocols
1026 "
1027
1028 EXTERNAL_LIBRARY_LIST="
1029     avisynth
1030     bzlib
1031     frei0r
1032     gnutls
1033     libcdio
1034     libdc1394
1035     libfaac
1036     libfdk_aac
1037     libfreetype
1038     libgsm
1039     libilbc
1040     libmp3lame
1041     libopencore_amrnb
1042     libopencore_amrwb
1043     libopencv
1044     libopenjpeg
1045     libopus
1046     libpulse
1047     librtmp
1048     libschroedinger
1049     libspeex
1050     libtheora
1051     libvo_aacenc
1052     libvo_amrwbenc
1053     libvorbis
1054     libvpx
1055     libx264
1056     libxavs
1057     libxvid
1058     openssl
1059     x11grab
1060     zlib
1061 "
1062
1063 HWACCEL_LIST="
1064     dxva2
1065     vaapi
1066     vda
1067     vdpau
1068 "
1069 LIBRARY_LIST="
1070     avcodec
1071     avdevice
1072     avfilter
1073     avformat
1074     avresample
1075     avutil
1076     swscale
1077 "
1078
1079 PROGRAM_LIST="
1080     avconv
1081     avplay
1082     avprobe
1083     avserver
1084 "
1085
1086 CONFIG_LIST="
1087     $COMPONENT_LIST
1088     $EXTERNAL_LIBRARY_LIST
1089     $HWACCEL_LIST
1090     $LIBRARY_LIST
1091     $PROGRAM_LIST
1092     dct
1093     doc
1094     fft
1095     gpl
1096     gray
1097     hardcoded_tables
1098     lsp
1099     lzo
1100     mdct
1101     memalign_hack
1102     network
1103     nonfree
1104     pic
1105     rdft
1106     runtime_cpudetect
1107     safe_bitstream_reader
1108     shared
1109     small
1110     sram
1111     static
1112     swscale_alpha
1113     thumb
1114     version3
1115     xmm_clobber_test
1116 "
1117
1118 THREADS_LIST='
1119     pthreads
1120     w32threads
1121 '
1122
1123 ARCH_LIST='
1124     aarch64
1125     alpha
1126     arm
1127     avr32
1128     avr32_ap
1129     avr32_uc
1130     bfin
1131     ia64
1132     m68k
1133     mips
1134     mips64
1135     parisc
1136     ppc
1137     ppc64
1138     s390
1139     sh4
1140     sparc
1141     sparc64
1142     tilegx
1143     tilepro
1144     tomi
1145     x86
1146     x86_32
1147     x86_64
1148 '
1149
1150 ARCH_EXT_LIST_ARM='
1151     armv5te
1152     armv6
1153     armv6t2
1154     neon
1155     vfp
1156     vfpv3
1157 '
1158
1159 ARCH_EXT_LIST_X86='
1160     amd3dnow
1161     amd3dnowext
1162     avx
1163     fma4
1164     mmx
1165     mmxext
1166     sse
1167     sse2
1168     sse3
1169     sse4
1170     sse42
1171     ssse3
1172 '
1173
1174 ARCH_EXT_LIST="
1175     $ARCH_EXT_LIST_ARM
1176     $ARCH_EXT_LIST_X86
1177     altivec
1178     ppc4xx
1179     vis
1180 "
1181
1182 HAVE_LIST_CMDLINE='
1183     inline_asm
1184     symver
1185     yasm
1186 '
1187
1188 HAVE_LIST_PUB='
1189     bigendian
1190     fast_unaligned
1191 '
1192
1193 MATH_FUNCS="
1194     atanf
1195     atan2f
1196     cbrtf
1197     cosf
1198     exp2
1199     exp2f
1200     expf
1201     isinf
1202     isnan
1203     ldexpf
1204     llrint
1205     llrintf
1206     log2
1207     log2f
1208     log10f
1209     lrint
1210     lrintf
1211     powf
1212     rint
1213     round
1214     roundf
1215     sinf
1216     trunc
1217     truncf
1218 "
1219
1220 HAVE_LIST="
1221     $ARCH_EXT_LIST
1222     $(add_suffix _external $ARCH_EXT_LIST)
1223     $(add_suffix _inline   $ARCH_EXT_LIST)
1224     $HAVE_LIST_CMDLINE
1225     $HAVE_LIST_PUB
1226     $THREADS_LIST
1227     $MATH_FUNCS
1228     aligned_malloc
1229     aligned_stack
1230     alsa_asoundlib_h
1231     altivec_h
1232     arpa_inet_h
1233     asm_mod_q
1234     asm_mod_y
1235     attribute_may_alias
1236     attribute_packed
1237     cdio_paranoia_h
1238     cdio_paranoia_paranoia_h
1239     closesocket
1240     cmov
1241     CommandLineToArgvW
1242     cpunop
1243     CryptGenRandom
1244     dcbzl
1245     dev_bktr_ioctl_bt848_h
1246     dev_bktr_ioctl_meteor_h
1247     dev_ic_bt8xx_h
1248     dev_video_bktr_ioctl_bt848_h
1249     dev_video_meteor_ioctl_meteor_h
1250     direct_h
1251     dlfcn_h
1252     dlopen
1253     dos_paths
1254     dxva_h
1255     ebp_available
1256     ebx_available
1257     fast_64bit
1258     fast_clz
1259     fast_cmov
1260     fcntl
1261     fork
1262     getaddrinfo
1263     gethrtime
1264     getopt
1265     GetProcessAffinityMask
1266     GetProcessMemoryInfo
1267     GetProcessTimes
1268     GetSystemTimeAsFileTime
1269     getrusage
1270     getservbyport
1271     gettimeofday
1272     gnu_as
1273     gsm_h
1274     ibm_asm
1275     inet_aton
1276     io_h
1277     isatty
1278     jack_port_get_latency_range
1279     ldbrx
1280     libdc1394_1
1281     libdc1394_2
1282     local_aligned_16
1283     local_aligned_8
1284     localtime_r
1285     loongson
1286     machine_ioctl_bt848_h
1287     machine_ioctl_meteor_h
1288     machine_rw_barrier
1289     malloc_h
1290     MapViewOfFile
1291     memalign
1292     MemoryBarrier
1293     mkstemp
1294     mm_empty
1295     mmap
1296     mprotect
1297     msvcrt
1298     nanosleep
1299     poll_h
1300     posix_memalign
1301     rdtsc
1302     sched_getaffinity
1303     sdl
1304     SetConsoleTextAttribute
1305     setmode
1306     setrlimit
1307     Sleep
1308     sndio_h
1309     socklen_t
1310     soundcard_h
1311     strerror_r
1312     strptime
1313     strtok_r
1314     struct_addrinfo
1315     struct_group_source_req
1316     struct_ip_mreq_source
1317     struct_ipv6_mreq
1318     struct_pollfd
1319     struct_rusage_ru_maxrss
1320     struct_sockaddr_in6
1321     struct_sockaddr_sa_len
1322     struct_sockaddr_storage
1323     struct_v4l2_frmivalenum_discrete
1324     symver_asm_label
1325     symver_gnu_asm
1326     sync_val_compare_and_swap
1327     sysconf
1328     sysctl
1329     sys_mman_h
1330     sys_param_h
1331     sys_resource_h
1332     sys_select_h
1333     sys_soundcard_h
1334     sys_time_h
1335     sys_videoio_h
1336     threads
1337     unistd_h
1338     usleep
1339     vfp_args
1340     VirtualAlloc
1341     windows_h
1342     winsock2_h
1343     xform_asm
1344     xmm_clobbers
1345 "
1346
1347 # options emitted with CONFIG_ prefix but not available on the command line
1348 CONFIG_EXTRA="
1349     aandcttables
1350     ac3dsp
1351     audio_frame_queue
1352     error_resilience
1353     gcrypt
1354     golomb
1355     gplv3
1356     h264chroma
1357     h264dsp
1358     h264pred
1359     h264qpel
1360     huffman
1361     lgplv3
1362     lpc
1363     mpegaudio
1364     mpegaudiodsp
1365     mpegvideo
1366     mpegvideoenc
1367     nettle
1368     rangecoder
1369     rtpdec
1370     rtpenc_chain
1371     sinewin
1372     videodsp
1373     vp3dsp
1374 "
1375
1376 CMDLINE_SELECT="
1377     $ARCH_EXT_LIST
1378     $CONFIG_LIST
1379     $HAVE_LIST_CMDLINE
1380     $THREADS_LIST
1381     asm
1382     cross_compile
1383     debug
1384     extra_warnings
1385     logging
1386     lto
1387     optimizations
1388 "
1389
1390 PATHS_LIST='
1391     bindir
1392     datadir
1393     incdir
1394     libdir
1395     mandir
1396     prefix
1397     shlibdir
1398 '
1399
1400 CMDLINE_SET="
1401     $PATHS_LIST
1402     ar
1403     arch
1404     as
1405     build_suffix
1406     cc
1407     cpu
1408     cross_prefix
1409     dep_cc
1410     extra_version
1411     host_cc
1412     host_cflags
1413     host_ld
1414     host_ldflags
1415     host_libs
1416     host_os
1417     ld
1418     logfile
1419     malloc_prefix
1420     nm
1421     optflags
1422     pkg_config
1423     random_seed
1424     samples
1425     sysinclude
1426     sysroot
1427     target_exec
1428     target_os
1429     target_path
1430     toolchain
1431 "
1432
1433 CMDLINE_APPEND="
1434     extra_cflags
1435     host_cppflags
1436 "
1437
1438 # code dependency declarations
1439
1440 # architecture extensions
1441
1442 armv5te_deps="arm"
1443 armv6_deps="arm"
1444 armv6t2_deps="arm"
1445 neon_deps="arm"
1446 vfp_deps="arm"
1447 vfpv3_deps="vfp"
1448
1449 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1450
1451 altivec_deps="ppc"
1452 ppc4xx_deps="ppc"
1453
1454 vis_deps="sparc"
1455
1456 x86_64_suggest="cmov fast_cmov"
1457
1458 amd3dnow_deps="mmx"
1459 amd3dnowext_deps="amd3dnow"
1460 mmx_deps="x86"
1461 mmxext_deps="mmx"
1462 sse_deps="mmxext"
1463 sse2_deps="sse"
1464 sse3_deps="sse2"
1465 ssse3_deps="sse3"
1466 sse4_deps="ssse3"
1467 sse42_deps="sse4"
1468 avx_deps="sse42"
1469 fma4_deps="avx"
1470
1471 mmx_external_deps="yasm"
1472 mmx_inline_deps="inline_asm"
1473 mmx_suggest="mmx_external mmx_inline"
1474
1475 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1476     eval dep=\$${ext}_deps
1477     eval ${ext}_external_deps='"${dep}_external"'
1478     eval ${ext}_inline_deps='"${dep}_inline"'
1479     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1480 done
1481
1482 aligned_stack_if_any="ppc x86"
1483 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1484 fast_clz_if_any="alpha avr32 mips ppc x86"
1485 fast_unaligned_if_any="ppc x86"
1486
1487 inline_asm_deps="!tms470"
1488 need_memalign="altivec neon sse"
1489
1490 symver_if_any="symver_asm_label symver_gnu_asm"
1491
1492 log2_deps="!msvcrt"
1493
1494 # subsystems
1495 dct_select="rdft"
1496 mdct_select="fft"
1497 rdft_select="fft"
1498 mpegaudio_select="mpegaudiodsp"
1499 mpegaudiodsp_select="dct"
1500 mpegvideo_select="videodsp"
1501 mpegvideoenc_select="mpegvideo"
1502
1503 # decoders / encoders
1504 aac_decoder_select="mdct sinewin"
1505 aac_encoder_select="audio_frame_queue mdct sinewin"
1506 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1507 ac3_decoder_select="mdct ac3dsp ac3_parser"
1508 ac3_encoder_select="mdct ac3dsp"
1509 ac3_fixed_encoder_select="mdct ac3dsp"
1510 alac_encoder_select="lpc"
1511 amrnb_decoder_select="lsp"
1512 amrwb_decoder_select="lsp"
1513 atrac1_decoder_select="mdct sinewin"
1514 atrac3_decoder_select="mdct"
1515 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1516 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1517 cavs_decoder_select="golomb h264chroma mpegvideo videodsp"
1518 comfortnoise_encoder_select="lpc"
1519 cook_decoder_select="mdct sinewin"
1520 cscd_decoder_select="lzo"
1521 cscd_decoder_suggest="zlib"
1522 dca_decoder_select="mdct"
1523 dnxhd_encoder_select="aandcttables mpegvideoenc"
1524 dxa_decoder_select="zlib"
1525 eac3_decoder_select="ac3_decoder"
1526 eac3_encoder_select="ac3_encoder"
1527 eamad_decoder_select="aandcttables mpegvideo"
1528 eatgq_decoder_select="aandcttables"
1529 eatqi_decoder_select="aandcttables mpegvideo"
1530 ffv1_decoder_select="golomb rangecoder"
1531 ffv1_encoder_select="rangecoder"
1532 ffvhuff_encoder_select="huffman"
1533 flac_decoder_select="golomb"
1534 flac_encoder_select="golomb lpc"
1535 flashsv_decoder_select="zlib"
1536 flashsv_encoder_select="zlib"
1537 flashsv2_decoder_select="zlib"
1538 flv_decoder_select="h263_decoder"
1539 flv_encoder_select="h263_encoder"
1540 fraps_decoder_select="huffman"
1541 h261_decoder_select="error_resilience mpegvideo"
1542 h261_encoder_select="aandcttables mpegvideoenc"
1543 h263_decoder_select="error_resilience h263_parser mpegvideo"
1544 h263_encoder_select="aandcttables mpegvideoenc"
1545 h263i_decoder_select="h263_decoder"
1546 h263p_encoder_select="h263_encoder"
1547 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel videodsp"
1548 huffyuv_encoder_select="huffman"
1549 iac_decoder_select="fft mdct sinewin"
1550 imc_decoder_select="fft mdct sinewin"
1551 jpegls_decoder_select="golomb"
1552 jpegls_encoder_select="golomb"
1553 ljpeg_encoder_select="aandcttables mpegvideoenc"
1554 loco_decoder_select="golomb"
1555 mdec_decoder_select="error_resilience mpegvideo"
1556 mjpeg_encoder_select="aandcttables mpegvideoenc"
1557 mlp_decoder_select="mlp_parser"
1558 mp1_decoder_select="mpegaudio"
1559 mp1float_decoder_select="mpegaudio"
1560 mp2_decoder_select="mpegaudio"
1561 mp2float_decoder_select="mpegaudio"
1562 mp3_decoder_select="mpegaudio"
1563 mp3adu_decoder_select="mpegaudio"
1564 mp3adufloat_decoder_select="mpegaudio"
1565 mp3float_decoder_select="mpegaudio"
1566 mp3on4_decoder_select="mpegaudio"
1567 mp3on4float_decoder_select="mpegaudio"
1568 mpc7_decoder_select="mpegaudiodsp"
1569 mpc8_decoder_select="mpegaudiodsp"
1570 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1571 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1572 mpeg1video_decoder_select="error_resilience mpegvideo"
1573 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1574 mpeg2video_decoder_select="error_resilience mpegvideo"
1575 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1576 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1577 mpeg4_encoder_select="h263_encoder"
1578 msmpeg4v1_decoder_select="h263_decoder"
1579 msmpeg4v1_encoder_select="h263_encoder"
1580 msmpeg4v2_decoder_select="h263_decoder"
1581 msmpeg4v2_encoder_select="h263_encoder"
1582 msmpeg4v3_decoder_select="h263_decoder"
1583 msmpeg4v3_encoder_select="h263_encoder"
1584 mss2_decoder_select="error_resilience vc1_decoder"
1585 nellymoser_decoder_select="mdct sinewin"
1586 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1587 nuv_decoder_select="lzo"
1588 png_decoder_select="zlib"
1589 png_encoder_select="zlib"
1590 qcelp_decoder_select="lsp"
1591 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1592 ra_144_encoder_select="audio_frame_queue lpc"
1593 ralf_decoder_select="golomb"
1594 rv10_decoder_select="error_resilience h263_decoder"
1595 rv10_encoder_select="h263_encoder"
1596 rv20_decoder_select="error_resilience h263_decoder"
1597 rv20_encoder_select="h263_encoder"
1598 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1599 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1600 shorten_decoder_select="golomb"
1601 sipr_decoder_select="lsp"
1602 svq1_decoder_select="mpegvideo"
1603 svq1_encoder_select="aandcttables mpegvideoenc"
1604 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1605 svq3_decoder_suggest="zlib"
1606 theora_decoder_select="vp3_decoder"
1607 tiff_decoder_suggest="zlib"
1608 tiff_encoder_suggest="zlib"
1609 truehd_decoder_select="mlp_decoder"
1610 tscc_decoder_select="zlib"
1611 twinvq_decoder_select="mdct lsp sinewin"
1612 utvideo_encoder_select="huffman"
1613 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1614 vc1image_decoder_select="vc1_decoder"
1615 vorbis_decoder_select="mdct"
1616 vorbis_encoder_select="mdct"
1617 vp3_decoder_select="vp3dsp videodsp"
1618 vp5_decoder_select="h264chroma videodsp vp3dsp"
1619 vp6_decoder_select="h264chroma huffman videodsp vp3dsp"
1620 vp6a_decoder_select="vp6_decoder"
1621 vp6f_decoder_select="vp6_decoder"
1622 vp8_decoder_select="h264pred videodsp"
1623 wmapro_decoder_select="mdct sinewin"
1624 wmav1_decoder_select="mdct sinewin"
1625 wmav1_encoder_select="mdct sinewin"
1626 wmav2_decoder_select="mdct sinewin"
1627 wmav2_encoder_select="mdct sinewin"
1628 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1629 wmv1_decoder_select="h263_decoder"
1630 wmv1_encoder_select="h263_encoder"
1631 wmv2_decoder_select="h263_decoder videodsp"
1632 wmv2_encoder_select="h263_encoder"
1633 wmv3_decoder_select="vc1_decoder"
1634 wmv3image_decoder_select="wmv3_decoder"
1635 zerocodec_decoder_select="zlib"
1636 zlib_decoder_select="zlib"
1637 zlib_encoder_select="zlib"
1638 zmbv_decoder_select="zlib"
1639 zmbv_encoder_select="zlib"
1640
1641 # hardware accelerators
1642 dxva2_deps="dxva2api_h"
1643 vaapi_deps="va_va_h"
1644 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1645 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1646 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1647
1648 h263_vaapi_hwaccel_deps="vaapi"
1649 h263_vaapi_hwaccel_select="h263_decoder"
1650 h263_vdpau_hwaccel_deps="vdpau"
1651 h263_vdpau_hwaccel_select="h263_decoder"
1652 h264_dxva2_hwaccel_deps="dxva2"
1653 h264_dxva2_hwaccel_select="h264_decoder"
1654 h264_vaapi_hwaccel_deps="vaapi"
1655 h264_vaapi_hwaccel_select="h264_decoder"
1656 h264_vda_hwaccel_deps="vda"
1657 h264_vda_hwaccel_select="h264_decoder"
1658 h264_vdpau_decoder_deps="vdpau"
1659 h264_vdpau_decoder_select="h264_decoder"
1660 h264_vdpau_hwaccel_deps="vdpau"
1661 h264_vdpau_hwaccel_select="h264_decoder"
1662 mpeg_vdpau_decoder_deps="vdpau"
1663 mpeg_vdpau_decoder_select="mpegvideo_decoder"
1664 mpeg1_vdpau_decoder_deps="vdpau"
1665 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1666 mpeg1_vdpau_hwaccel_deps="vdpau"
1667 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1668 mpeg2_dxva2_hwaccel_deps="dxva2"
1669 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1670 mpeg2_vaapi_hwaccel_deps="vaapi"
1671 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1672 mpeg2_vdpau_hwaccel_deps="vdpau"
1673 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1674 mpeg4_vaapi_hwaccel_deps="vaapi"
1675 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1676 mpeg4_vdpau_decoder_deps="vdpau"
1677 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1678 mpeg4_vdpau_hwaccel_deps="vdpau"
1679 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1680 vc1_dxva2_hwaccel_deps="dxva2"
1681 vc1_dxva2_hwaccel_select="vc1_decoder"
1682 vc1_vaapi_hwaccel_deps="vaapi"
1683 vc1_vaapi_hwaccel_select="vc1_decoder"
1684 vc1_vdpau_decoder_deps="vdpau"
1685 vc1_vdpau_decoder_select="vc1_decoder"
1686 vc1_vdpau_hwaccel_deps="vdpau"
1687 vc1_vdpau_hwaccel_select="vc1_decoder"
1688 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1689 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1690 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1691 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1692
1693 # parsers
1694 h264_parser_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel videodsp"
1695 mpeg4video_parser_select="error_resilience mpegvideo"
1696 mpegvideo_parser_select="error_resilience mpegvideo"
1697 vc1_parser_select="mpegvideo"
1698
1699 # external libraries
1700 libfaac_encoder_deps="libfaac"
1701 libfaac_encoder_select="audio_frame_queue"
1702 libfdk_aac_encoder_deps="libfdk_aac"
1703 libfdk_aac_encoder_select="audio_frame_queue"
1704 libgsm_decoder_deps="libgsm"
1705 libgsm_encoder_deps="libgsm"
1706 libgsm_ms_decoder_deps="libgsm"
1707 libgsm_ms_encoder_deps="libgsm"
1708 libilbc_decoder_deps="libilbc"
1709 libilbc_encoder_deps="libilbc"
1710 libmp3lame_encoder_deps="libmp3lame"
1711 libmp3lame_encoder_select="audio_frame_queue"
1712 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1713 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1714 libopencore_amrnb_encoder_select="audio_frame_queue"
1715 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1716 libopenjpeg_decoder_deps="libopenjpeg"
1717 libopenjpeg_encoder_deps="libopenjpeg"
1718 libopus_decoder_deps="libopus"
1719 libopus_encoder_deps="libopus"
1720 libopus_encoder_select="audio_frame_queue"
1721 libschroedinger_decoder_deps="libschroedinger"
1722 libschroedinger_encoder_deps="libschroedinger"
1723 libspeex_decoder_deps="libspeex"
1724 libspeex_encoder_deps="libspeex"
1725 libspeex_encoder_select="audio_frame_queue"
1726 libtheora_encoder_deps="libtheora"
1727 libvo_aacenc_encoder_deps="libvo_aacenc"
1728 libvo_aacenc_encoder_select="audio_frame_queue"
1729 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1730 libvorbis_encoder_deps="libvorbis"
1731 libvorbis_encoder_select="audio_frame_queue"
1732 libvpx_vp8_decoder_deps="libvpx"
1733 libvpx_vp8_encoder_deps="libvpx"
1734 libvpx_vp9_decoder_deps="libvpx"
1735 libvpx_vp9_encoder_deps="libvpx"
1736 libx264_encoder_deps="libx264"
1737 libxavs_encoder_deps="libxavs"
1738 libxvid_encoder_deps="libxvid"
1739
1740 # demuxers / muxers
1741 ac3_demuxer_select="ac3_parser"
1742 asf_stream_muxer_select="asf_muxer"
1743 avisynth_demuxer_deps="avisynth"
1744 dirac_demuxer_select="dirac_parser"
1745 eac3_demuxer_select="ac3_parser"
1746 flac_demuxer_select="flac_parser"
1747 ipod_muxer_select="mov_muxer"
1748 ismv_muxer_select="mov_muxer"
1749 matroska_audio_muxer_select="matroska_muxer"
1750 matroska_demuxer_suggest="bzlib lzo zlib"
1751 mov_demuxer_suggest="zlib"
1752 mov_muxer_select="rtpenc_chain"
1753 mp3_demuxer_select="mpegaudio_parser"
1754 mp4_muxer_select="mov_muxer"
1755 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1756 mpegtsraw_demuxer_select="mpegts_demuxer"
1757 mxf_d10_muxer_select="mxf_muxer"
1758 ogg_demuxer_select="golomb"
1759 psp_muxer_select="mov_muxer"
1760 rtp_demuxer_select="sdp_demuxer"
1761 rtp_muxer_select="mpegvideo"
1762 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1763 rtsp_demuxer_select="http_protocol rtpdec"
1764 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1765 sap_demuxer_select="sdp_demuxer"
1766 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1767 sdp_demuxer_select="rtpdec"
1768 smoothstreaming_muxer_select="ismv_muxer"
1769 spdif_muxer_select="aac_parser"
1770 tak_demuxer_select="tak_parser"
1771 tg2_muxer_select="mov_muxer"
1772 tgp_muxer_select="mov_muxer"
1773 w64_demuxer_deps="wav_demuxer"
1774
1775 # indevs / outdevs
1776 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1777 alsa_outdev_deps="alsa_asoundlib_h"
1778 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1779 dv1394_indev_deps="dv1394 dv_demuxer"
1780 fbdev_indev_deps="linux_fb_h"
1781 jack_indev_deps="jack_jack_h"
1782 libcdio_indev_deps="libcdio"
1783 libdc1394_indev_deps="libdc1394"
1784 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1785 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1786 pulse_indev_deps="libpulse"
1787 sndio_indev_deps="sndio_h"
1788 sndio_outdev_deps="sndio_h"
1789 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1790 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1791 vfwcap_indev_extralibs="-lavicap32"
1792 x11grab_indev_deps="x11grab XShmCreateImage"
1793
1794 # protocols
1795 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1796 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1797 ffrtmpcrypt_protocol_select="tcp_protocol"
1798 ffrtmphttp_protocol_deps="!librtmp_protocol"
1799 ffrtmphttp_protocol_select="http_protocol"
1800 gopher_protocol_select="network"
1801 httpproxy_protocol_select="tcp_protocol"
1802 http_protocol_select="tcp_protocol"
1803 https_protocol_select="tls_protocol"
1804 librtmp_protocol_deps="librtmp"
1805 librtmpe_protocol_deps="librtmp"
1806 librtmps_protocol_deps="librtmp"
1807 librtmpt_protocol_deps="librtmp"
1808 librtmpte_protocol_deps="librtmp"
1809 mmsh_protocol_select="http_protocol"
1810 mmst_protocol_select="network"
1811 rtmp_protocol_deps="!librtmp_protocol"
1812 rtmp_protocol_select="tcp_protocol"
1813 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1814 rtmps_protocol_deps="!librtmp_protocol"
1815 rtmps_protocol_select="tls_protocol"
1816 rtmpt_protocol_select="ffrtmphttp_protocol"
1817 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1818 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1819 rtp_protocol_select="udp_protocol"
1820 sctp_protocol_deps="struct_sctp_event_subscribe"
1821 sctp_protocol_select="network"
1822 srtp_protocol_select="rtp_protocol"
1823 tcp_protocol_select="network"
1824 tls_protocol_deps_any="openssl gnutls"
1825 tls_protocol_select="tcp_protocol"
1826 udp_protocol_select="network"
1827
1828 # filters
1829 blackframe_filter_deps="gpl"
1830 boxblur_filter_deps="gpl"
1831 cropdetect_filter_deps="gpl"
1832 delogo_filter_deps="gpl"
1833 drawtext_filter_deps="libfreetype"
1834 frei0r_filter_deps="frei0r dlopen strtok_r"
1835 frei0r_filter_extralibs='$ldl'
1836 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1837 frei0r_src_filter_extralibs='$ldl'
1838 hqdn3d_filter_deps="gpl"
1839 resample_filter_deps="avresample"
1840 ocv_filter_deps="libopencv"
1841 scale_filter_deps="swscale"
1842 yadif_filter_deps="gpl"
1843
1844 # libraries
1845 avcodec_deps="avutil"
1846 avdevice_deps="avutil avcodec avformat"
1847 avfilter_deps="avutil"
1848 avformat_deps="avutil avcodec"
1849 avresample_deps="avutil"
1850 swscale_deps="avutil"
1851
1852 # programs
1853 avconv_deps="avcodec avfilter avformat avresample swscale"
1854 avconv_select="aformat_filter anull_filter asyncts_filter format_filter
1855                fps_filter null_filter resample_filter scale_filter
1856                setpts_filter"
1857 avplay_deps="avcodec avformat avresample swscale sdl"
1858 avplay_select="rdft"
1859 avprobe_deps="avcodec avformat"
1860 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1861 avserver_extralibs='$ldl'
1862
1863 doc_deps="texi2html"
1864
1865 # default parameters
1866
1867 logfile="config.log"
1868
1869 # installation paths
1870 prefix_default="/usr/local"
1871 bindir_default='${prefix}/bin'
1872 datadir_default='${prefix}/share/avconv'
1873 incdir_default='${prefix}/include'
1874 libdir_default='${prefix}/lib'
1875 mandir_default='${prefix}/share/man'
1876 shlibdir_default="$libdir_default"
1877
1878 # toolchain
1879 ar_default="ar"
1880 cc_default="gcc"
1881 host_cc_default="gcc"
1882 cp_f="cp -f"
1883 ln_s="ln -s -f"
1884 nm_default="nm -g"
1885 objformat="elf"
1886 pkg_config_default=pkg-config
1887 ranlib="ranlib"
1888 yasmexe="yasm"
1889
1890 nogas=":"
1891
1892 # machine
1893 arch_default=$(uname -m)
1894 cpu="generic"
1895
1896 # OS
1897 target_os_default=$(tolower $(uname -s))
1898 host_os=$target_os_default
1899
1900 # configurable options
1901 enable $LIBRARY_LIST $PROGRAM_LIST
1902
1903 enable asm
1904 enable debug
1905 enable doc
1906 enable optimizations
1907 enable safe_bitstream_reader
1908 enable static
1909 enable swscale_alpha
1910
1911 # build settings
1912 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1913 AVSERVERLDFLAGS=-Wl,-E
1914 LIBPREF="lib"
1915 LIBSUF=".a"
1916 FULLNAME='$(NAME)$(BUILDSUF)'
1917 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1918 SLIBPREF="lib"
1919 SLIBSUF=".so"
1920 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1921 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1922 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1923 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1924 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1925 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1926
1927 asflags_filter=echo
1928 cflags_filter=echo
1929 ldflags_filter=echo
1930
1931 AS_C='-c'
1932 AS_O='-o $@'
1933 CC_C='-c'
1934 CC_E='-E -o $@'
1935 CC_O='-o $@'
1936 LD_O='-o $@'
1937 LD_LIB='-l%'
1938 LD_PATH='-L'
1939 HOSTCC_C='-c'
1940 HOSTCC_O='-o $@'
1941 HOSTLD_O='-o $@'
1942
1943 host_cflags='-O3 -g'
1944 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
1945 host_libs='-lm'
1946 host_cflags_filter=echo
1947 host_ldflags_filter=echo
1948
1949 target_path='$(CURDIR)'
1950
1951 # since the object filename is not given with the -MM flag, the compiler
1952 # is only able to print the basename, and we must add the path ourselves
1953 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1954 DEPFLAGS='-MM'
1955
1956 # find source path
1957 if test -f configure; then
1958     source_path=.
1959 else
1960     source_path=$(cd $(dirname "$0"); pwd)
1961     echo "$source_path" | grep -q '[[:blank:]]' &&
1962         die "Out of tree builds are impossible with whitespace in source path."
1963     test -e "$source_path/config.h" &&
1964         die "Out of tree builds are impossible with config.h in source dir."
1965 fi
1966
1967 for v in "$@"; do
1968     r=${v#*=}
1969     l=${v%"$r"}
1970     r=$(sh_quote "$r")
1971     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1972 done
1973
1974 find_things(){
1975     thing=$1
1976     pattern=$2
1977     file=$source_path/$3
1978     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1979 }
1980
1981 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1982 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1983 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1984 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1985 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1986 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1987 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1988 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1989 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1990 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1991 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1992
1993 ALL_COMPONENTS="
1994     $BSF_LIST
1995     $DECODER_LIST
1996     $DEMUXER_LIST
1997     $ENCODER_LIST
1998     $FILTER_LIST
1999     $HWACCEL_LIST
2000     $INDEV_LIST
2001     $MUXER_LIST
2002     $OUTDEV_LIST
2003     $PARSER_LIST
2004     $PROTOCOL_LIST
2005 "
2006
2007 for n in $COMPONENT_LIST; do
2008     v=$(toupper ${n%s})_LIST
2009     eval enable \$$v
2010     eval ${n}_if_any="\$$v"
2011 done
2012
2013 enable $ARCH_EXT_LIST
2014
2015 die_unknown(){
2016     echo "Unknown option \"$1\"."
2017     echo "See $0 --help for available options."
2018     exit 1
2019 }
2020
2021 print_3_columns() {
2022     cat | tr ' ' '\n' | sort | pr -r -3 -t
2023 }
2024
2025 show_list() {
2026     suffix=_$1
2027     shift
2028     echo $* | sed s/$suffix//g | print_3_columns
2029     exit 0
2030 }
2031
2032 rand_list(){
2033     IFS=', '
2034     set -- $*
2035     unset IFS
2036     for thing; do
2037         comp=${thing%:*}
2038         prob=${thing#$comp}
2039         prob=${prob#:}
2040         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2041         echo "prob ${prob:-0.5}"
2042         printf '%s\n' $comp
2043     done
2044 }
2045
2046 do_random(){
2047     action=$1
2048     shift
2049     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2050     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2051 }
2052
2053 for opt do
2054     optval="${opt#*=}"
2055     case "$opt" in
2056         --extra-ldflags=*)
2057             add_ldflags $optval
2058         ;;
2059         --extra-libs=*)
2060             add_extralibs $optval
2061         ;;
2062         --disable-devices)
2063             disable $INDEV_LIST $OUTDEV_LIST
2064         ;;
2065         --enable-debug=*)
2066             debuglevel="$optval"
2067         ;;
2068         --disable-programs)
2069             disable $PROGRAM_LIST
2070         ;;
2071         --disable-everything)
2072             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2073         ;;
2074         --disable-all)
2075             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2076             disable $LIBRARY_LIST $PROGRAM_LIST doc
2077         ;;
2078         --enable-random|--disable-random)
2079             action=${opt%%-random}
2080             do_random ${action#--} $COMPONENT_LIST
2081         ;;
2082         --enable-random=*|--disable-random=*)
2083             action=${opt%%-random=*}
2084             do_random ${action#--} $optval
2085         ;;
2086         --enable-*=*|--disable-*=*)
2087             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2088             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2089             eval list=\$$(toupper $thing)_LIST
2090             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2091             $action $(filter "$name" $list)
2092         ;;
2093         --enable-?*|--disable-?*)
2094             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2095             if is_in $option $COMPONENT_LIST; then
2096                 test $action = disable && action=unset
2097                 eval $action \$$(toupper ${option%s})_LIST
2098             elif is_in $option $CMDLINE_SELECT; then
2099                 $action $option
2100             else
2101                 die_unknown $opt
2102             fi
2103         ;;
2104         --list-*)
2105             NAME="${opt#--list-}"
2106             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2107             NAME=${NAME%s}
2108             eval show_list $NAME \$$(toupper $NAME)_LIST
2109         ;;
2110         --help|-h) show_help
2111         ;;
2112         *)
2113             optname="${opt%%=*}"
2114             optname="${optname#--}"
2115             optname=$(echo "$optname" | sed 's/-/_/g')
2116             if is_in $optname $CMDLINE_SET; then
2117                 eval $optname='$optval'
2118             elif is_in $optname $CMDLINE_APPEND; then
2119                 append $optname "$optval"
2120             else
2121                 die_unknown $opt
2122             fi
2123         ;;
2124     esac
2125 done
2126
2127 disabled logging && logfile=/dev/null
2128
2129 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2130 set >> $logfile
2131
2132 test -n "$cross_prefix" && enable cross_compile
2133
2134 if enabled cross_compile; then
2135     test -n "$arch" && test -n "$target_os" ||
2136         die "Must specify target arch and OS when cross-compiling"
2137 fi
2138
2139 ar_default="${cross_prefix}${ar_default}"
2140 cc_default="${cross_prefix}${cc_default}"
2141 nm_default="${cross_prefix}${nm_default}"
2142 pkg_config_default="${cross_prefix}${pkg_config_default}"
2143 ranlib="${cross_prefix}${ranlib}"
2144
2145 sysinclude_default="${sysroot}/usr/include"
2146
2147 case "$toolchain" in
2148     clang-asan)
2149         cc_default="clang"
2150         add_cflags  -faddress-sanitizer
2151         add_ldflags -faddress-sanitizer
2152     ;;
2153     clang-tsan)
2154         cc_default="clang"
2155         add_cflags  -fthread-sanitizer
2156         add_ldflags -fthread-sanitizer
2157     ;;
2158     msvc)
2159         cc_default="c99wrap cl"
2160         ld_default="c99wrap link"
2161         nm_default="dumpbin -symbols"
2162         ar_default="lib"
2163         target_os_default="win32"
2164     ;;
2165     ?*)
2166         die "Unknown toolchain $toolchain"
2167     ;;
2168 esac
2169
2170 set_default arch cc pkg_config sysinclude target_os
2171 enabled cross_compile || host_cc_default=$cc
2172 set_default host_cc
2173
2174 if ! $pkg_config --version >/dev/null 2>&1; then
2175     warn "$pkg_config not found, library detection may fail."
2176     pkg_config=false
2177 fi
2178
2179 exesuf() {
2180     case $1 in
2181         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2182     esac
2183 }
2184
2185 EXESUF=$(exesuf $target_os)
2186 HOSTEXESUF=$(exesuf $host_os)
2187
2188 # set temporary file name
2189 : ${TMPDIR:=$TEMPDIR}
2190 : ${TMPDIR:=$TMP}
2191 : ${TMPDIR:=/tmp}
2192
2193 if ! check_cmd mktemp -u XXXXXX; then
2194     # simple replacement for missing mktemp
2195     # NOT SAFE FOR GENERAL USE
2196     mktemp(){
2197         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2198     }
2199 fi
2200
2201 tmpfile(){
2202     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2203         (set -C; exec > $tmp) 2>/dev/null ||
2204         die "Unable to create temporary file in $TMPDIR."
2205     append TMPFILES $tmp
2206     eval $1=$tmp
2207 }
2208
2209 trap 'rm -f -- $TMPFILES' EXIT
2210
2211 tmpfile TMPASM .asm
2212 tmpfile TMPC   .c
2213 tmpfile TMPE   $EXESUF
2214 tmpfile TMPH   .h
2215 tmpfile TMPO   .o
2216 tmpfile TMPS   .S
2217 tmpfile TMPSH  .sh
2218 tmpfile TMPV   .ver
2219
2220 unset -f mktemp
2221
2222 chmod +x $TMPE
2223
2224 # make sure we can execute files in $TMPDIR
2225 cat > $TMPSH 2>> $logfile <<EOF
2226 #! /bin/sh
2227 EOF
2228 chmod +x $TMPSH >> $logfile 2>&1
2229 if ! $TMPSH >> $logfile 2>&1; then
2230     cat <<EOF
2231 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2232 variable to another directory and make sure that it is not mounted noexec.
2233 EOF
2234     die "Sanity test failed."
2235 fi
2236
2237 ccc_flags(){
2238     for flag; do
2239         case $flag in
2240             -std=c99)           echo -c99                       ;;
2241             -mcpu=*)            echo -arch ${flag#*=}           ;;
2242             -mieee)             echo -ieee                      ;;
2243             -O*|-fast)          echo $flag                      ;;
2244             -fno-math-errno)    echo -assume nomath_errno       ;;
2245             -g)                 echo -g3                        ;;
2246             -Wall)              echo -msg_enable level2         ;;
2247             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2248             -Wl,*)              echo $flag                      ;;
2249             -f*|-W*)                                            ;;
2250             *)                  echo $flag                      ;;
2251         esac
2252    done
2253 }
2254
2255 msvc_flags(){
2256     for flag; do
2257         case $flag in
2258             -fomit-frame-pointer) echo -Oy ;;
2259             -g)                   echo -Z7 ;;
2260             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2261                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2262                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2263                                        -wd4996 -wd4273 ;;
2264             -std=c99)             ;;
2265             -fno-math-errno)      ;;
2266             -fno-common)          ;;
2267             -fno-signed-zeros)    ;;
2268             -fPIC)                ;;
2269             -lz)                  echo zlib.lib ;;
2270             -lavifil32)           echo vfw32.lib ;;
2271             -lavicap32)           echo vfw32.lib user32.lib ;;
2272             -l*)                  echo ${flag#-l}.lib ;;
2273             *)                    echo $flag ;;
2274         esac
2275     done
2276 }
2277
2278 pgi_flags(){
2279     for flag; do
2280         case $flag in
2281             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2282             -fomit-frame-pointer) echo -Mnoframe ;;
2283             -g)                   echo -gopt ;;
2284             *)                    echo $flag ;;
2285         esac
2286     done
2287 }
2288
2289 suncc_flags(){
2290     for flag; do
2291         case $flag in
2292             -march=*|-mcpu=*)
2293                 case "${flag#*=}" in
2294                     native)                   echo -xtarget=native       ;;
2295                     v9|niagara)               echo -xarch=sparc          ;;
2296                     ultrasparc)               echo -xarch=sparcvis       ;;
2297                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2298                     i586|pentium)             echo -xchip=pentium        ;;
2299                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2300                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2301                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2302                     pentium4*)          echo -xtarget=pentium4           ;;
2303                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2304                     *-sse3)             echo -xarch=sse3                 ;;
2305                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2306                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2307                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2308                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2309                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2310                     k8|opteron|athlon64|athlon-fx)
2311                                               echo -xarch=sse2a          ;;
2312                     athlon*)                  echo -xarch=pentium_proa   ;;
2313                 esac
2314                 ;;
2315             -std=c99)             echo -xc99              ;;
2316             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2317             -fPIC)                echo -KPIC -xcode=pic32 ;;
2318             -W*,*)                echo $flag              ;;
2319             -f*-*|-W*|-mimpure-text)                      ;;
2320             -shared)              echo -G                 ;;
2321             *)                    echo $flag              ;;
2322         esac
2323     done
2324 }
2325
2326 tms470_flags(){
2327     for flag; do
2328         case $flag in
2329             -march=*|-mcpu=*)
2330                 case "${flag#*=}" in
2331                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2332                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2333                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2334                     armv6*|arm11*)          echo -mv=6   ;;
2335                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2336                                             echo -mv=5e  ;;
2337                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2338                 esac
2339                 ;;
2340             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2341             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2342             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2343             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2344             -msoft-float)   echo --float_support=vfplib       ;;
2345             -O[0-3]|-mf=*)  echo $flag                        ;;
2346             -g)             echo -g -mn                       ;;
2347             -pds=*)         echo $flag                        ;;
2348             -D*|-I*)        echo $flag                        ;;
2349             --gcc|--abi=*)  echo $flag                        ;;
2350             -me)            echo $flag                        ;;
2351         esac
2352     done
2353 }
2354
2355 probe_cc(){
2356     pfx=$1
2357     _cc=$2
2358
2359     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2360     unset _ld_o _ldflags _ld_lib _ld_path
2361     unset _depflags _DEPCMD _DEPFLAGS
2362     _flags_filter=echo
2363
2364     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2365         _type=llvm_gcc
2366         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2367         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2368         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2369         _cflags_speed='-O3'
2370         _cflags_size='-Os'
2371     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2372         _type=gcc
2373         gcc_version=$($_cc --version | head -n1)
2374         gcc_basever=$($_cc -dumpversion)
2375         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2376         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2377         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2378         if ! $_cc -dumpversion | grep -q '^2\.'; then
2379             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2380         fi
2381         _cflags_speed='-O3'
2382         _cflags_size='-Os'
2383     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2384         _type=icc
2385         _ident=$($_cc --version | head -n1)
2386         _depflags='-MMD'
2387         _cflags_speed='-O3'
2388         _cflags_size='-Os'
2389         _cflags_noopt='-O1'
2390     elif $_cc -v 2>&1 | grep -q xlc; then
2391         _type=xlc
2392         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2393         _cflags_speed='-O5'
2394         _cflags_size='-O5 -qcompact'
2395     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2396         _type=ccc
2397         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2398         _DEPFLAGS='-M'
2399         _cflags_speed='-fast'
2400         _cflags_size='-O1'
2401         _flags_filter=ccc_flags
2402     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2403         test -d "$sysroot" || die "No valid sysroot specified."
2404         _type=armcc
2405         _ident=$($_cc --vsn | head -n1)
2406         armcc_conf="$PWD/armcc.conf"
2407         $_cc --arm_linux_configure                 \
2408              --arm_linux_config_file="$armcc_conf" \
2409              --configure_sysroot="$sysroot"        \
2410              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2411              die "Error creating armcc configuration file."
2412         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2413         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2414         as_default="${cross_prefix}gcc"
2415         _depflags='-MMD'
2416         _cflags_speed='-O3'
2417         _cflags_size='-Os'
2418     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2419         _type=tms470
2420         _ident=$($_cc -version | head -n1 | tr -s ' ')
2421         _flags='--gcc --abi=eabi -me'
2422         _cc_e='-ppl -fe=$@'
2423         _cc_o='-fe=$@'
2424         _depflags='-ppa -ppd=$(@:.o=.d)'
2425         _cflags_speed='-O3 -mf=5'
2426         _cflags_size='-O3 -mf=2'
2427         _flags_filter=tms470_flags
2428     elif $_cc -v 2>&1 | grep -q clang; then
2429         _type=clang
2430         _ident=$($_cc --version | head -n1)
2431         _depflags='-MMD'
2432         _cflags_speed='-O3'
2433         _cflags_size='-Os'
2434     elif $_cc -V 2>&1 | grep -q Sun; then
2435         _type=suncc
2436         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2437         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2438         _DEPFLAGS='-xM1 -xc99'
2439         _ldflags='-std=c99'
2440         _cflags_speed='-O5'
2441         _cflags_size='-O5 -xspace'
2442         _flags_filter=suncc_flags
2443     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2444         _type=pathscale
2445         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2446         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2447         _cflags_speed='-O2'
2448         _cflags_size='-Os'
2449         _flags_filter='filter_out -Wdisabled-optimization'
2450     elif $_cc -v 2>&1 | grep -q Open64; then
2451         _type=open64
2452         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2453         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2454         _cflags_speed='-O2'
2455         _cflags_size='-Os'
2456         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2457     elif $_cc -V 2>&1 | grep -q Portland; then
2458         _type=pgi
2459         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2460         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2461         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2462         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2463         _cflags_noopt="-O1"
2464         _flags_filter=pgi_flags
2465     elif $_cc 2>&1 | grep -q Microsoft; then
2466         _type=msvc
2467         _ident=$($cc 2>&1 | head -n1)
2468         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2469         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2470         _cflags_speed="-O2"
2471         _cflags_size="-O1"
2472         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2473         if $_cc 2>&1 | grep -q Linker; then
2474             _ld_o='-out $@'
2475         else
2476             _ld_o='-Fe$@'
2477         fi
2478         _cc_o='-Fo $@'
2479         _cc_e='-P -Fi $@'
2480         _flags_filter=msvc_flags
2481         _ld_lib='lib%.a'
2482         _ld_path='-libpath:'
2483         _flags='-nologo'
2484         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2485         if [ $pfx = hostcc ]; then
2486             append _cflags -Dsnprintf=_snprintf
2487         fi
2488     fi
2489
2490     eval ${pfx}_type=\$_type
2491     eval ${pfx}_ident=\$_ident
2492 }
2493
2494 set_ccvars(){
2495     eval ${1}_C=\${_cc_c-\${${1}_C}}
2496     eval ${1}_E=\${_cc_e-\${${1}_E}}
2497     eval ${1}_O=\${_cc_o-\${${1}_O}}
2498
2499     if [ -n "$_depflags" ]; then
2500         eval ${1}_DEPFLAGS=\$_depflags
2501     else
2502         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2503         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2504         eval DEP${1}FLAGS=\$_flags
2505     fi
2506 }
2507
2508 probe_cc cc "$cc"
2509 cflags_filter=$_flags_filter
2510 cflags_speed=$_cflags_speed
2511 cflags_size=$_cflags_size
2512 cflags_noopt=$_cflags_noopt
2513 add_cflags $_flags $_cflags
2514 cc_ldflags=$_ldflags
2515 set_ccvars CC
2516
2517 probe_cc hostcc "$host_cc"
2518 host_cflags_filter=$_flags_filter
2519 add_host_cflags  $_flags $_cflags
2520 set_ccvars HOSTCC
2521
2522 test -n "$cc_type" && enable $cc_type ||
2523     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2524
2525 : ${as_default:=$cc}
2526 : ${dep_cc_default:=$cc}
2527 : ${ld_default:=$cc}
2528 : ${host_ld_default:=$host_cc}
2529 set_default ar as dep_cc ld host_ld
2530
2531 probe_cc as "$as"
2532 asflags_filter=$_flags_filter
2533 add_asflags $_flags $_cflags
2534 set_ccvars AS
2535
2536 probe_cc ld "$ld"
2537 ldflags_filter=$_flags_filter
2538 add_ldflags $_flags $_ldflags
2539 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2540 LD_O=${_ld_o-$LD_O}
2541 LD_LIB=${_ld_lib-$LD_LIB}
2542 LD_PATH=${_ld_path-$LD_PATH}
2543
2544 probe_cc hostld "$host_ld"
2545 host_ldflags_filter=$_flags_filter
2546 add_host_ldflags $_flags $_ldflags
2547 HOSTLD_O=${_ld_o-$HOSTLD_O}
2548
2549 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2550     probe_cc depcc "$dep_cc"
2551     CCDEP=${_DEPCMD:-$DEPCMD}
2552     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2553     DEPCCFLAGS=$_flags
2554 fi
2555
2556 if $ar 2>&1 | grep -q Microsoft; then
2557     arflags="-nologo"
2558     ar_o='-out:$@'
2559 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2560     arflags="rq"
2561     ar_o='$@'
2562 else
2563     arflags="rc"
2564     ar_o='$@'
2565 fi
2566
2567 add_cflags $extra_cflags
2568 add_asflags $extra_cflags
2569
2570 if test -n "$sysroot"; then
2571     case "$cc_type" in
2572         gcc|llvm_gcc|clang)
2573             add_cppflags --sysroot="$sysroot"
2574             add_ldflags --sysroot="$sysroot"
2575         ;;
2576         tms470)
2577             add_cppflags -I"$sysinclude"
2578             add_ldflags  --sysroot="$sysroot"
2579         ;;
2580     esac
2581 fi
2582
2583 if test "$cpu" = host; then
2584     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2585
2586     case "$cc_type" in
2587         gcc|llvm_gcc)
2588             check_native(){
2589                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2590                 sed -n "/cc1.*$1=/{
2591                             s/.*$1=\\([^ ]*\\).*/\\1/
2592                             p
2593                             q
2594                         }" $TMPE
2595             }
2596             cpu=$(check_native -march || check_native -mcpu)
2597         ;;
2598     esac
2599
2600     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2601 fi
2602
2603 # Deal with common $arch aliases
2604 case "$arch" in
2605     aarch64|arm64)
2606         arch="aarch64"
2607     ;;
2608     arm*)
2609         arch="arm"
2610     ;;
2611     mips*|IP*)
2612         arch="mips"
2613     ;;
2614     parisc*|hppa*)
2615         arch="parisc"
2616     ;;
2617     "Power Macintosh"|ppc*|powerpc*)
2618         arch="ppc"
2619     ;;
2620     s390|s390x)
2621         arch="s390"
2622     ;;
2623     sh4|sh)
2624         arch="sh4"
2625     ;;
2626     sun4u|sparc*)
2627         arch="sparc"
2628     ;;
2629     tilegx|tile-gx)
2630         arch="tilegx"
2631     ;;
2632     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2633         arch="x86"
2634     ;;
2635 esac
2636
2637 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2638 enable $arch
2639
2640 # Add processor-specific flags
2641 if enabled aarch64; then
2642
2643     case $cpu in
2644         armv*)
2645             cpuflags="-march=$cpu"
2646         ;;
2647         *)
2648             cpuflags="-mcpu=$cpu"
2649         ;;
2650     esac
2651
2652 elif enabled alpha; then
2653
2654     cpuflags="-mcpu=$cpu"
2655
2656 elif enabled arm; then
2657
2658     check_arm_arch() {
2659         check_cpp_condition stddef.h \
2660             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2661             $cpuflags
2662     }
2663
2664     probe_arm_arch() {
2665         if   check_arm_arch 4;        then echo armv4;
2666         elif check_arm_arch 4T;       then echo armv4t;
2667         elif check_arm_arch 5;        then echo armv5;
2668         elif check_arm_arch 5E;       then echo armv5e;
2669         elif check_arm_arch 5T;       then echo armv5t;
2670         elif check_arm_arch 5TE;      then echo armv5te;
2671         elif check_arm_arch 5TEJ;     then echo armv5te;
2672         elif check_arm_arch 6;        then echo armv6;
2673         elif check_arm_arch 6J;       then echo armv6j;
2674         elif check_arm_arch 6K;       then echo armv6k;
2675         elif check_arm_arch 6Z;       then echo armv6z;
2676         elif check_arm_arch 6ZK;      then echo armv6zk;
2677         elif check_arm_arch 6T2;      then echo armv6t2;
2678         elif check_arm_arch 7;        then echo armv7;
2679         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2680         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2681         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2682         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2683         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2684         fi
2685     }
2686
2687     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2688
2689     case $cpu in
2690         armv*)
2691             cpuflags="-march=$cpu"
2692             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2693         ;;
2694         *)
2695             cpuflags="-mcpu=$cpu"
2696             case $cpu in
2697                 cortex-a*)                               subarch=armv7a  ;;
2698                 cortex-r*)                               subarch=armv7r  ;;
2699                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2700                 arm11*)                                  subarch=armv6   ;;
2701                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2702                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2703                 *)                             subarch=$(probe_arm_arch) ;;
2704             esac
2705         ;;
2706     esac
2707
2708     case "$subarch" in
2709         armv5t*)    enable fast_clz                ;;
2710         armv[6-8]*) enable fast_clz fast_unaligned ;;
2711     esac
2712
2713 elif enabled avr32; then
2714
2715     case $cpu in
2716         ap7[02]0[0-2])
2717             subarch="avr32_ap"
2718             cpuflags="-mpart=$cpu"
2719         ;;
2720         ap)
2721             subarch="avr32_ap"
2722             cpuflags="-march=$cpu"
2723         ;;
2724         uc3[ab]*)
2725             subarch="avr32_uc"
2726             cpuflags="-mcpu=$cpu"
2727         ;;
2728         uc)
2729             subarch="avr32_uc"
2730             cpuflags="-march=$cpu"
2731         ;;
2732     esac
2733
2734 elif enabled bfin; then
2735
2736     cpuflags="-mcpu=$cpu"
2737
2738 elif enabled mips; then
2739
2740     cpuflags="-march=$cpu"
2741
2742 elif enabled ppc; then
2743
2744     case $(tolower $cpu) in
2745         601|ppc601|powerpc601)
2746             cpuflags="-mcpu=601"
2747             disable altivec
2748         ;;
2749         603*|ppc603*|powerpc603*)
2750             cpuflags="-mcpu=603"
2751             disable altivec
2752         ;;
2753         604*|ppc604*|powerpc604*)
2754             cpuflags="-mcpu=604"
2755             disable altivec
2756         ;;
2757         g3|75*|ppc75*|powerpc75*)
2758             cpuflags="-mcpu=750"
2759             disable altivec
2760         ;;
2761         g4|745*|ppc745*|powerpc745*)
2762             cpuflags="-mcpu=7450"
2763         ;;
2764         74*|ppc74*|powerpc74*)
2765             cpuflags="-mcpu=7400"
2766         ;;
2767         g5|970|ppc970|powerpc970)
2768             cpuflags="-mcpu=970"
2769         ;;
2770         power[3-7]*)
2771             cpuflags="-mcpu=$cpu"
2772         ;;
2773         cell)
2774             cpuflags="-mcpu=cell"
2775             enable ldbrx
2776         ;;
2777         e500mc)
2778             cpuflags="-mcpu=e500mc"
2779             disable altivec
2780         ;;
2781         e500v2)
2782             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2783             disable altivec
2784         ;;
2785         e500)
2786             cpuflags="-mcpu=8540 -mhard-float"
2787             disable altivec
2788         ;;
2789     esac
2790
2791 elif enabled sparc; then
2792
2793     case $cpu in
2794         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2795             cpuflags="-mcpu=$cpu"
2796             disable vis
2797         ;;
2798         ultrasparc*|niagara[234])
2799             cpuflags="-mcpu=$cpu"
2800         ;;
2801     esac
2802
2803 elif enabled x86; then
2804
2805     case $cpu in
2806         i[345]86|pentium)
2807             cpuflags="-march=$cpu"
2808             disable mmx
2809         ;;
2810         # targets that do NOT support conditional mov (cmov)
2811         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2812             cpuflags="-march=$cpu"
2813             disable cmov
2814         ;;
2815         # targets that do support conditional mov (cmov)
2816         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2817             cpuflags="-march=$cpu"
2818             enable cmov
2819             enable fast_cmov
2820         ;;
2821         # targets that do support conditional mov but on which it's slow
2822         pentium4|pentium4m|prescott|nocona)
2823             cpuflags="-march=$cpu"
2824             enable cmov
2825             disable fast_cmov
2826         ;;
2827     esac
2828
2829 fi
2830
2831 if [ "$cpu" != generic ]; then
2832     add_cflags  $cpuflags
2833     add_asflags $cpuflags
2834 fi
2835
2836 # compiler sanity check
2837 check_exec <<EOF
2838 int main(void){ return 0; }
2839 EOF
2840 if test "$?" != 0; then
2841     echo "$cc is unable to create an executable file."
2842     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2843         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2844         echo "Only do this if you know what cross compiling means."
2845     fi
2846     die "C compiler test failed."
2847 fi
2848
2849 add_cppflags -D_ISOC99_SOURCE
2850 check_cflags -std=c99
2851 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2852 #include <stdlib.h>
2853 EOF
2854 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2855 #include <stdlib.h>
2856 EOF
2857
2858 check_host_cflags -std=c99
2859 check_host_cflags -Wall
2860
2861 check_64bit(){
2862     arch32=$1
2863     arch64=$2
2864     expr=$3
2865     check_code cc "" "int test[2*($expr) - 1]" &&
2866         subarch=$arch64 || subarch=$arch32
2867 }
2868
2869 case "$arch" in
2870     aarch64|alpha|ia64)
2871         spic=$shared
2872     ;;
2873     mips)
2874         check_64bit mips mips64 '_MIPS_SIM > 1'
2875         spic=$shared
2876     ;;
2877     parisc)
2878         check_64bit parisc parisc64 'sizeof(void *) > 4'
2879         spic=$shared
2880     ;;
2881     ppc)
2882         check_64bit ppc ppc64 'sizeof(void *) > 4'
2883         spic=$shared
2884     ;;
2885     sparc)
2886         check_64bit sparc sparc64 'sizeof(void *) > 4'
2887         spic=$shared
2888     ;;
2889     x86)
2890         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
2891         if test "$subarch" = "x86_64"; then
2892             spic=$shared
2893         fi
2894     ;;
2895 esac
2896
2897 enable $subarch
2898 enabled spic && enable pic
2899
2900 # OS specific
2901 case $target_os in
2902     haiku)
2903         prefix_default="/boot/common"
2904         network_extralibs="-lnetwork"
2905         host_libs=
2906         ;;
2907     sunos)
2908         AVSERVERLDFLAGS=""
2909         SHFLAGS='-shared -Wl,-h,$$(@F)'
2910         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2911         network_extralibs="-lsocket -lnsl"
2912         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2913         # When using suncc to build, the Solaris linker will mark
2914         # an executable with each instruction set encountered by
2915         # the Solaris assembler.  As our libraries contain their own
2916         # guards for processor-specific code, instead suppress
2917         # generation of the HWCAPS ELF section on Solaris x86 only.
2918         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2919         nm_default='nm -P -g'
2920         ;;
2921     netbsd)
2922         disable symver
2923         oss_indev_extralibs="-lossaudio"
2924         oss_outdev_extralibs="-lossaudio"
2925         ;;
2926     openbsd|bitrig)
2927         disable symver
2928         SHFLAGS='-shared'
2929         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
2930         SLIB_INSTALL_LINKS=
2931         oss_indev_extralibs="-lossaudio"
2932         oss_outdev_extralibs="-lossaudio"
2933         ;;
2934     dragonfly)
2935         disable symver
2936         ;;
2937     freebsd)
2938         ;;
2939     bsd/os)
2940         add_extralibs -lpoll -lgnugetopt
2941         ;;
2942     darwin)
2943         gas="gas-preprocessor.pl $cc"
2944         enabled ppc && add_asflags -force_cpusubtype_ALL
2945         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2946         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2947         add_ldflags -Wl,-dynamic,-search_paths_first
2948         SLIBSUF=".dylib"
2949         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2950         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2951         AVSERVERLDFLAGS=-Wl,-bind_at_load
2952         objformat="macho"
2953         enabled x86_64 && objformat="macho64"
2954         enabled_any pic shared ||
2955             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2956         ;;
2957     mingw32*)
2958         if test $target_os = "mingw32ce"; then
2959             disable network
2960         else
2961             target_os=mingw32
2962         fi
2963         LIBTARGET=i386
2964         if enabled x86_64; then
2965             LIBTARGET="i386:x86-64"
2966         elif enabled arm; then
2967             LIBTARGET=arm-wince
2968         fi
2969         shlibdir_default="$bindir_default"
2970         SLIBPREF=""
2971         SLIBSUF=".dll"
2972         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2973         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2974         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2975         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
2976         SLIB_INSTALL_LINKS=
2977         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
2978         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
2979         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2980         objformat="win32"
2981         dlltool="${cross_prefix}dlltool"
2982         ranlib=:
2983         enable dos_paths
2984         ;;
2985     win32|win64)
2986         if enabled shared; then
2987             # Link to the import library instead of the normal static library
2988             # for shared libs.
2989             LD_LIB='%.lib'
2990             # Cannot build shared and static libraries at the same time with
2991             # MSVC.
2992             disable static
2993         fi
2994         shlibdir_default="$bindir_default"
2995         SLIBPREF=""
2996         SLIBSUF=".dll"
2997         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2998         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2999         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3000         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3001         SLIB_INSTALL_LINKS=
3002         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3003         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3004         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3005         objformat="win32"
3006         ranlib=:
3007         enable dos_paths
3008         ;;
3009     cygwin*)
3010         target_os=cygwin
3011         shlibdir_default="$bindir_default"
3012         SLIBPREF="cyg"
3013         SLIBSUF=".dll"
3014         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3015         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3016         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3017         SLIB_INSTALL_LINKS=
3018         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3019         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3020         objformat="win32"
3021         enable dos_paths
3022         ;;
3023     *-dos|freedos|opendos)
3024         network_extralibs="-lsocket"
3025         objformat="coff"
3026         enable dos_paths
3027         add_cppflags -U__STRICT_ANSI__
3028         ;;
3029     linux)
3030         enable dv1394
3031         ;;
3032     irix*)
3033         target_os=irix
3034         ranlib="echo ignoring ranlib"
3035         ;;
3036     os/2*)
3037         ln_s="cp -f"
3038         objformat="aout"
3039         add_cppflags -D_GNU_SOURCE
3040         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3041         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3042         AVSERVERLDFLAGS=""
3043         LIBSUF="_s.a"
3044         SLIBPREF=""
3045         SLIBSUF=".dll"
3046         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3047         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3048         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3049             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3050             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3051             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3052             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3053             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3054         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3055             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3056         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3057         enable dos_paths
3058         ;;
3059     gnu/kfreebsd)
3060         add_cppflags -D_BSD_SOURCE
3061         ;;
3062     gnu)
3063         ;;
3064     qnx)
3065         add_cppflags -D_QNX_SOURCE
3066         network_extralibs="-lsocket"
3067         ;;
3068     symbian)
3069         SLIBSUF=".dll"
3070         enable dos_paths
3071         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3072         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3073         add_ldflags -Wl,--target1-abs,--no-undefined \
3074                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3075                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3076         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3077                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3078                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3079         ;;
3080     osf1)
3081         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3082         AVSERVERLDFLAGS=
3083         ;;
3084     minix)
3085         ;;
3086     plan9)
3087         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3088                      -D_REENTRANT_SOURCE        \
3089                      -D_RESEARCH_SOURCE         \
3090                      -DFD_SETSIZE=96            \
3091                      -DHAVE_SOCK_OPTS
3092         add_compat strtod.o strtod=avpriv_strtod
3093         network_extralibs='-lbsd'
3094         exeobjs=compat/plan9/main.o
3095         disable avserver
3096         cp_f='cp'
3097         ;;
3098     none)
3099         ;;
3100     *)
3101         die "Unknown OS '$target_os'."
3102         ;;
3103 esac
3104
3105 # determine libc flavour
3106
3107 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3108 if check_cpp_condition features.h "defined __UCLIBC__"; then
3109     libc_type=uclibc
3110     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3111 elif check_cpp_condition features.h "defined __GLIBC__"; then
3112     libc_type=glibc
3113     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3114 # MinGW headers can be installed on Cygwin, so check for newlib first.
3115 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3116     libc_type=newlib
3117     add_cppflags -U__STRICT_ANSI__
3118 elif check_header _mingw.h; then
3119     libc_type=mingw
3120     check_cpp_condition _mingw.h \
3121         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3122             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3123         die "ERROR: MinGW runtime version must be >= 3.15."
3124     add_cppflags -U__STRICT_ANSI__
3125 elif check_func_headers stdlib.h _get_doserrno; then
3126     libc_type=msvcrt
3127     add_compat strtod.o strtod=avpriv_strtod
3128     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3129                                  _snprintf=avpriv_snprintf  \
3130                                  vsnprintf=avpriv_vsnprintf
3131 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3132     libc_type=klibc
3133 fi
3134
3135 test -n "$libc_type" && enable $libc_type
3136
3137 # hacks for compiler/libc/os combinations
3138
3139 if enabled_all tms470 glibc; then
3140     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3141     add_cppflags -D__USER_LABEL_PREFIX__=
3142     add_cppflags -D__builtin_memset=memset
3143     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3144     add_cflags   -pds=48    # incompatible redefinition of macro
3145 fi
3146
3147 if enabled_all ccc glibc; then
3148     add_ldflags -Wl,-z,now  # calls to libots crash without this
3149 fi
3150
3151 esc(){
3152     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3153 }
3154
3155 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3156
3157 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3158
3159 set_default $PATHS_LIST
3160 set_default nm
3161
3162 # we need to build at least one lib type
3163 if ! enabled_any static shared; then
3164     cat <<EOF
3165 At least one library type must be built.
3166 Specify --enable-static to build the static libraries or --enable-shared to
3167 build the shared libraries as well. To only build the shared libraries specify
3168 --disable-static in addition to --enable-shared.
3169 EOF
3170     exit 1;
3171 fi
3172
3173 die_license_disabled() {
3174     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3175 }
3176
3177 die_license_disabled gpl libcdio
3178 die_license_disabled gpl libx264
3179 die_license_disabled gpl libxavs
3180 die_license_disabled gpl libxvid
3181 die_license_disabled gpl x11grab
3182
3183 die_license_disabled nonfree libfaac
3184 die_license_disabled nonfree libfdk_aac
3185 die_license_disabled nonfree openssl
3186
3187 die_license_disabled version3 libopencore_amrnb
3188 die_license_disabled version3 libopencore_amrwb
3189 die_license_disabled version3 libvo_aacenc
3190 die_license_disabled version3 libvo_amrwbenc
3191
3192 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3193
3194 disabled optimizations || check_cflags -fomit-frame-pointer
3195
3196 enable_pic() {
3197     enable pic
3198     add_cppflags -DPIC
3199     add_cflags   -fPIC
3200     add_asflags  -fPIC
3201 }
3202
3203 enabled pic && enable_pic
3204
3205 check_cc <<EOF || die "Symbol mangling check failed."
3206 int ff_extern;
3207 EOF
3208 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3209 extern_prefix=${sym%%ff_extern*}
3210
3211 check_cc <<EOF && enable_weak inline_asm
3212 void foo(void) { __asm__ volatile ("" ::); }
3213 EOF
3214
3215 _restrict=
3216 for restrict_keyword in restrict __restrict__ __restrict; do
3217     check_cc <<EOF && _restrict=$restrict_keyword && break
3218 void foo(char * $restrict_keyword p);
3219 EOF
3220 done
3221
3222 check_cc <<EOF && enable attribute_packed
3223 struct { int x; } __attribute__((packed)) x;
3224 EOF
3225
3226 check_cc <<EOF && enable attribute_may_alias
3227 union { int x; } __attribute__((may_alias)) x;
3228 EOF
3229
3230 check_cc <<EOF || die "endian test failed"
3231 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3232 EOF
3233 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3234
3235 if enabled alpha; then
3236
3237     check_cflags -mieee
3238
3239 elif enabled arm; then
3240
3241     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3242     enabled thumb && check_cflags -mthumb || check_cflags -marm
3243     nogas=die
3244
3245     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3246         enable vfp_args
3247     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3248         case "${cross_prefix:-$cc}" in
3249             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3250             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3251 __asm__ (".eabi_attribute 28, 1");
3252 int main(void) { return 0; }
3253 EOF
3254         esac
3255         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3256     fi
3257
3258     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3259     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3260     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3261     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3262     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3263     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3264
3265     [ $target_os = linux ] ||
3266         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3267             $ARCH_EXT_LIST_ARM
3268
3269     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3270     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3271
3272     enabled_all armv6t2 shared !pic && enable_pic
3273
3274 elif enabled mips; then
3275
3276     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3277
3278 elif enabled parisc; then
3279
3280     if enabled gcc; then
3281         case $($cc -dumpversion) in
3282             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3283         esac
3284     fi
3285
3286 elif enabled ppc; then
3287
3288     enable local_aligned_8 local_aligned_16
3289
3290     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3291     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3292     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3293     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3294
3295     # AltiVec flags: The FSF version of GCC differs from the Apple version
3296     if enabled altivec; then
3297         nogas=warn
3298         check_cflags -maltivec -mabi=altivec &&
3299         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3300         check_cflags -faltivec
3301
3302         # check if our compiler supports Motorola AltiVec C API
3303         check_cc <<EOF || disable altivec
3304 $inc_altivec_h
3305 int main(void) {
3306     vector signed int v1 = (vector signed int) { 0 };
3307     vector signed int v2 = (vector signed int) { 1 };
3308     v1 = vec_add(v1, v2);
3309     return 0;
3310 }
3311 EOF
3312
3313         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3314     fi
3315
3316 elif enabled sparc; then
3317
3318     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3319
3320 elif enabled x86; then
3321
3322     check_builtin rdtsc    intrin.h   "__rdtsc()"
3323     check_builtin mm_empty mmintrin.h "_mm_empty()"
3324
3325     enable local_aligned_8 local_aligned_16
3326
3327     # check whether EBP is available on x86
3328     # As 'i' is stored on the stack, this program will crash
3329     # if the base pointer is used to access it because the
3330     # base pointer is cleared in the inline assembly code.
3331     check_exec_crash <<EOF && enable ebp_available
3332 volatile int i=0;
3333 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3334 return i;
3335 EOF
3336
3337     # check whether EBX is available on x86
3338     check_inline_asm ebx_available '""::"b"(0)' &&
3339         check_inline_asm ebx_available '"":::"%ebx"'
3340
3341     # check whether xmm clobbers are supported
3342     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3343
3344     # check whether binutils is new enough to compile SSSE3/MMXEXT
3345     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3346     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3347
3348     if ! disabled_any asm mmx yasm; then
3349         if check_cmd $yasmexe --version; then
3350             enabled x86_64 && yasm_extra="-m amd64"
3351             yasm_debug="-g dwarf2"
3352         elif check_cmd nasm -v; then
3353             yasmexe=nasm
3354             yasm_debug="-g -F dwarf"
3355             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3356         fi
3357
3358         YASMFLAGS="-f $objformat $yasm_extra"
3359         enabled pic               && append YASMFLAGS "-DPIC"
3360         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3361         case "$objformat" in
3362             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3363         esac
3364
3365         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3366             die "yasm not found, use --disable-yasm for a crippled build"
3367         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3368         check_yasm "CPU amdnop" && enable cpunop
3369     fi
3370
3371     case "$cpu" in
3372         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3373             disable fast_clz
3374         ;;
3375     esac
3376
3377 fi
3378
3379 if enabled asm; then
3380     as=${gas:=$as}
3381     check_as <<EOF && enable gnu_as || \
3382         $nogas "GNU assembler not found, install gas-preprocessor"
3383 .macro m n
3384 \n: .int 0
3385 .endm
3386 m x
3387 EOF
3388 fi
3389
3390 check_ldflags -Wl,--as-needed
3391
3392 if check_func dlopen; then
3393     ldl=
3394 elif check_func dlopen -ldl; then
3395     ldl=-ldl
3396 fi
3397
3398 if ! disabled network; then
3399     check_type "sys/types.h sys/socket.h" socklen_t
3400     check_type netdb.h "struct addrinfo"
3401     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3402     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3403     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3404     check_type netinet/in.h "struct sockaddr_in6"
3405     check_type poll.h "struct pollfd"
3406     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3407     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3408     check_type netinet/sctp.h "struct sctp_event_subscribe"
3409     check_func getaddrinfo $network_extralibs
3410     check_func getservbyport $network_extralibs
3411     # Prefer arpa/inet.h over winsock2
3412     if check_header arpa/inet.h ; then
3413         check_func closesocket
3414     elif check_header winsock2.h ; then
3415         check_func_headers winsock2.h closesocket -lws2 &&
3416             network_extralibs="-lws2" ||
3417         { check_func_headers winsock2.h closesocket -lws2_32 &&
3418             network_extralibs="-lws2_32"; }
3419         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3420         check_type ws2tcpip.h socklen_t
3421         check_type ws2tcpip.h "struct addrinfo"
3422         check_type ws2tcpip.h "struct group_source_req"
3423         check_type ws2tcpip.h "struct ip_mreq_source"
3424         check_type ws2tcpip.h "struct ipv6_mreq"
3425         check_type winsock2.h "struct pollfd"
3426         check_type ws2tcpip.h "struct sockaddr_in6"
3427         check_type ws2tcpip.h "struct sockaddr_storage"
3428         check_struct winsock2.h "struct sockaddr" sa_len
3429     else
3430         disable network
3431     fi
3432 fi
3433
3434 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3435 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3436
3437 check_func  fcntl
3438 check_func  fork
3439 check_func  gethrtime
3440 check_func  getopt
3441 check_func  getrusage
3442 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3443 check_func  gettimeofday
3444 check_func  inet_aton $network_extralibs
3445 check_func  isatty
3446 check_func  localtime_r
3447 check_func  ${malloc_prefix}memalign            && enable memalign
3448 check_func  mkstemp
3449 check_func  mmap
3450 check_func  mprotect
3451 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3452 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3453 check_func  setrlimit
3454 check_func  strerror_r
3455 check_func  strptime
3456 check_func  strtok_r
3457 check_func  sched_getaffinity
3458 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3459 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3460 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3461 check_func  sysconf
3462 check_func  sysctl
3463 check_func  usleep
3464 check_func_headers io.h setmode
3465 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3466 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3467 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3468 check_func_headers windows.h GetProcessAffinityMask
3469 check_func_headers windows.h GetProcessTimes
3470 check_func_headers windows.h GetSystemTimeAsFileTime
3471 check_func_headers windows.h MapViewOfFile
3472 check_func_headers windows.h SetConsoleTextAttribute
3473 check_func_headers windows.h Sleep
3474 check_func_headers windows.h VirtualAlloc
3475
3476 check_header direct.h
3477 check_header dlfcn.h
3478 check_header dxva.h
3479 check_header dxva2api.h
3480 check_header io.h
3481 check_header malloc.h
3482 check_header poll.h
3483 check_header sys/mman.h
3484 check_header sys/param.h
3485 check_header sys/resource.h
3486 check_header sys/select.h
3487 check_header sys/time.h
3488 check_header unistd.h
3489 check_header vdpau/vdpau.h
3490 check_header vdpau/vdpau_x11.h
3491 check_header VideoDecodeAcceleration/VDADecoder.h
3492 check_header windows.h
3493 check_header X11/extensions/XvMClib.h
3494
3495 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3496 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3497
3498 if ! disabled w32threads && ! enabled pthreads; then
3499     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3500 fi
3501
3502 # check for some common methods of building with pthread support
3503 # do this before the optional library checks as some of them require pthreads
3504 if ! disabled pthreads && ! enabled w32threads; then
3505     enable pthreads
3506     if check_func pthread_create; then
3507         :
3508     elif check_func pthread_create -pthread; then
3509         add_cflags -pthread
3510         add_extralibs -pthread
3511     elif check_func pthread_create -pthreads; then
3512         add_cflags -pthreads
3513         add_extralibs -pthreads
3514     elif check_func pthread_create -lpthreadGC2; then
3515         add_extralibs -lpthreadGC2
3516     elif ! check_lib pthread.h pthread_create -lpthread; then
3517         disable pthreads
3518     fi
3519 fi
3520
3521 for thread in $THREADS_LIST; do
3522     if enabled $thread; then
3523         test -n "$thread_type" &&
3524             die "ERROR: Only one thread type must be selected." ||
3525             thread_type="$thread"
3526     fi
3527 done
3528
3529 check_lib math.h sin -lm && LIBM="-lm"
3530 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3531
3532 atan2f_args=2
3533 ldexpf_args=2
3534 powf_args=2
3535
3536 for func in $MATH_FUNCS; do
3537     eval check_mathfunc $func \${${func}_args:-1}
3538 done
3539
3540 # these are off by default, so fail if requested and not available
3541 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3542 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3543 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3544 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3545 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3546 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3547 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3548                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3549                         done || die "ERROR: libgsm not found"; }
3550 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3551 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3552 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3553 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3554 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3555 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3556 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3557 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3558 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3559 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3560 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3561 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3562 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3563 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3564 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3565 enabled libvpx     && {
3566     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3567                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3568     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3569                                 die "ERROR: libvpx encoder version must be >=0.9.6"; }
3570     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3571     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3572 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3573                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3574                         die "ERROR: libx264 version must be >= 0.118."; }
3575 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3576 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3577 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3578                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3579                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3580                         die "ERROR: openssl not found"; }
3581
3582 if enabled gnutls; then
3583     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3584     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3585 fi
3586
3587 # libdc1394 check
3588 if enabled libdc1394; then
3589     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3590         enable libdc1394_2; } ||
3591     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3592         enable libdc1394_1; } ||
3593     die "ERROR: No version of libdc1394 found "
3594 fi
3595
3596 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3597     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3598     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3599     enable sdl
3600 fi
3601
3602 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3603
3604 check_header linux/fb.h
3605 check_header linux/videodev2.h
3606 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3607
3608 check_header sys/videoio.h
3609
3610 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3611 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3612 # w32api 3.12 had it defined wrong
3613 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3614
3615 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3616 { check_header dev/bktr/ioctl_meteor.h &&
3617   check_header dev/bktr/ioctl_bt848.h; } ||
3618 { check_header machine/ioctl_meteor.h &&
3619   check_header machine/ioctl_bt848.h; } ||
3620 { check_header dev/video/meteor/ioctl_meteor.h &&
3621   check_header dev/video/bktr/ioctl_bt848.h; } ||
3622 check_header dev/ic/bt8xx.h
3623
3624 check_header sndio.h
3625 check_header sys/soundcard.h
3626 check_header soundcard.h
3627
3628 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3629
3630 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3631     check_func jack_port_get_latency_range -ljack
3632
3633 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3634
3635 if enabled libcdio; then
3636     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3637 fi
3638
3639 enabled x11grab                                           &&
3640 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3641 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3642 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3643
3644 enabled vdpau &&
3645     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3646     disable vdpau
3647
3648 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3649
3650 # add some useful compiler flags if supported
3651 check_cflags -Wdeclaration-after-statement
3652 check_cflags -Wall
3653 check_cflags -Wno-parentheses
3654 check_cflags -Wno-switch
3655 check_cflags -Wno-format-zero-length
3656 check_cflags -Wdisabled-optimization
3657 check_cflags -Wpointer-arith
3658 check_cflags -Wredundant-decls
3659 check_cflags -Wno-pointer-sign
3660 check_cflags -Wcast-qual
3661 check_cflags -Wwrite-strings
3662 check_cflags -Wtype-limits
3663 check_cflags -Wundef
3664 check_cflags -Wmissing-prototypes
3665 check_cflags -Wstrict-prototypes
3666 enabled extra_warnings && check_cflags -Winline
3667
3668 # add some linker flags
3669 check_ldflags -Wl,--warn-common
3670 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3671 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3672
3673 enabled xmm_clobber_test &&
3674     check_ldflags -Wl,--wrap,avcodec_open2              \
3675                   -Wl,--wrap,avcodec_decode_audio4      \
3676                   -Wl,--wrap,avcodec_decode_video2      \
3677                   -Wl,--wrap,avcodec_decode_subtitle2   \
3678                   -Wl,--wrap,avcodec_encode_audio2      \
3679                   -Wl,--wrap,avcodec_encode_video       \
3680                   -Wl,--wrap,avcodec_encode_subtitle    \
3681                   -Wl,--wrap,sws_scale ||
3682     disable xmm_clobber_test
3683
3684 echo "X{};" > $TMPV
3685 if test_ldflags -Wl,--version-script,$TMPV; then
3686     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3687     check_cc <<EOF && enable symver_asm_label
3688 void ff_foo(void) __asm__ ("av_foo@VERSION");
3689 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3690 EOF
3691     check_cc <<EOF && enable symver_gnu_asm
3692