configure

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --libdir=DIR             install libs in DIR [PREFIX/lib]
  85   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  86   --incdir=DIR             install includes in DIR [PREFIX/include]
  87   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  88
  89 Licensing options:
  90   --enable-gpl             allow use of GPL code, the resulting libs
  91                            and binaries will be under GPL [no]
  92   --enable-version3        upgrade (L)GPL to version 3 [no]
  93   --enable-nonfree         allow use of nonfree code, the resulting libs
  94                            and binaries will be unredistributable [no]
  95
  96 Configuration options:
  97   --disable-static         do not build static libraries [no]
  98   --enable-shared          build shared libraries [no]
  99   --enable-small           optimize for size instead of speed
 100   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 101   --enable-gray            enable full grayscale support (slower color)
 102   --disable-swscale-alpha  disable alpha channel support in swscale
 103   --disable-all            disable building components, libraries and programs
 104
 105 Program options:
 106   --disable-programs       do not build command line programs
 107   --disable-avconv         disable avconv build
 108   --disable-avplay         disable avplay build
 109   --disable-avprobe        disable avprobe build
 110   --disable-avserver       disable avserver build
 111
 112 Component options:
 113   --disable-doc            do not build documentation
 114   --disable-avdevice       disable libavdevice build
 115   --disable-avcodec        disable libavcodec build
 116   --disable-avformat       disable libavformat build
 117   --disable-avutil         disable libavutil build
 118   --disable-swscale        disable libswscale build
 119   --disable-avfilter       disable video filter support [no]
 120   --disable-avresample     disable libavresample build [no]
 121   --disable-pthreads       disable pthreads [auto]
 122   --disable-w32threads     disable Win32 threads [auto]
 123   --disable-network        disable network support [no]
 124   --disable-dct            disable DCT code
 125   --disable-error-resilience disable error resilience code
 126   --disable-lsp            disable LSP code
 127   --disable-lzo            disable LZO decoder code
 128   --disable-mdct           disable MDCT code
 129   --disable-rdft           disable RDFT code
 130   --disable-fft            disable FFT code
 131
 132 Hardware accelerators:
 133   --enable-dxva2           enable DXVA2 code
 134   --enable-vaapi           enable VAAPI code
 135   --enable-vda             enable VDA code
 136   --enable-vdpau           enable VDPAU code
 137
 138 Individual component options:
 139   --disable-everything     disable all components listed below
 140   --disable-encoder=NAME   disable encoder NAME
 141   --enable-encoder=NAME    enable encoder NAME
 142   --disable-encoders       disable all encoders
 143   --disable-decoder=NAME   disable decoder NAME
 144   --enable-decoder=NAME    enable decoder NAME
 145   --disable-decoders       disable all decoders
 146   --disable-hwaccel=NAME   disable hwaccel NAME
 147   --enable-hwaccel=NAME    enable hwaccel NAME
 148   --disable-hwaccels       disable all hwaccels
 149   --disable-muxer=NAME     disable muxer NAME
 150   --enable-muxer=NAME      enable muxer NAME
 151   --disable-muxers         disable all muxers
 152   --disable-demuxer=NAME   disable demuxer NAME
 153   --enable-demuxer=NAME    enable demuxer NAME
 154   --disable-demuxers       disable all demuxers
 155   --enable-parser=NAME     enable parser NAME
 156   --disable-parser=NAME    disable parser NAME
 157   --disable-parsers        disable all parsers
 158   --enable-bsf=NAME        enable bitstream filter NAME
 159   --disable-bsf=NAME       disable bitstream filter NAME
 160   --disable-bsfs           disable all bitstream filters
 161   --enable-protocol=NAME   enable protocol NAME
 162   --disable-protocol=NAME  disable protocol NAME
 163   --disable-protocols      disable all protocols
 164   --enable-indev=NAME      enable input device NAME
 165   --disable-indev=NAME     disable input device NAME
 166   --disable-indevs         disable input devices
 167   --enable-outdev=NAME     enable output device NAME
 168   --disable-outdev=NAME    disable output device NAME
 169   --disable-outdevs        disable output devices
 170   --disable-devices        disable all devices
 171   --enable-filter=NAME     enable filter NAME
 172   --disable-filter=NAME    disable filter NAME
 173   --disable-filters        disable all filters
 174
 175 External library support:
 176   --enable-avisynth        enable reading of AviSynth script files [no]
 177   --enable-bzlib           enable bzlib [autodetect]
 178   --enable-frei0r          enable frei0r video filtering
 179   --enable-gnutls          enable gnutls [no]
 180   --enable-libcdio         enable audio CD grabbing with libcdio
 181   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 182                            and libraw1394 [no]
 183   --enable-libfaac         enable AAC encoding via libfaac [no]
 184   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 185   --enable-libfreetype     enable libfreetype [no]
 186   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 187   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 188   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 189   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 190   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 191   --enable-libopencv       enable video filtering via libopencv [no]
 192   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 193   --enable-libopus         enable Opus decoding via libopus [no]
 194   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 195   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 196   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 197   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 198   --enable-libtheora       enable Theora encoding via libtheora [no]
 199   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 200   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 201   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 202   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 203   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 204   --enable-libx264         enable H.264 encoding via x264 [no]
 205   --enable-libxavs         enable AVS encoding via xavs [no]
 206   --enable-libxvid         enable Xvid encoding via xvidcore,
 207                            native MPEG-4/Xvid encoder exists [no]
 208   --enable-openssl         enable openssl [no]
 209   --enable-x11grab         enable X11 grabbing [no]
 210   --enable-zlib            enable zlib [autodetect]
 211
 212 Advanced options (experts only):
 213   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 214   --enable-cross-compile   assume a cross-compiler is used
 215   --sysroot=PATH           root of cross-build tree
 216   --sysinclude=PATH        location of cross-build system headers
 217   --target-os=OS           compiler targets OS [$target_os]
 218   --target-exec=CMD        command to run executables on target
 219   --target-path=DIR        path to view of build directory on target
 220   --target-samples=DIR     path to samples directory on target
 221   --toolchain=NAME         set tool defaults according to NAME
 222   --nm=NM                  use nm tool
 223   --ar=AR                  use archive tool AR [$ar_default]
 224   --as=AS                  use assembler AS [$as_default]
 225   --cc=CC                  use C compiler CC [$cc_default]
 226   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 227   --ld=LD                  use linker LD
 228   --host-cc=HOSTCC         use host C compiler HOSTCC
 229   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 230   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 231   --host-ld=HOSTLD         use host linker HOSTLD
 232   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 233   --host-libs=HLIBS        use libs HLIBS when linking for host
 234   --host-os=OS             compiler host OS [$target_os]
 235   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 236   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 237   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 238   --extra-version=STRING   version string suffix []
 239   --optflags=OPTFLAGS      override optimization-related compiler flags
 240   --build-suffix=SUFFIX    library name suffix []
 241   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 242   --arch=ARCH              select architecture [$arch]
 243   --cpu=CPU                select the minimum required CPU (affects
 244                            instruction selection, may crash on older CPUs)
 245   --enable-pic             build position-independent code
 246   --enable-sram            allow use of on-chip SRAM
 247   --enable-thumb           compile for Thumb instruction set
 248   --disable-symver         disable symbol versioning
 249   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 250   --disable-safe-bitstream-reader
 251                            disable buffer boundary checking in bitreaders
 252                            (faster, but may crash)
 253   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 254   --enable-lto             use link-time optimization
 255
 256 Optimization options (experts only):
 257   --disable-asm            disable all assembler optimizations
 258   --disable-altivec        disable AltiVec optimizations
 259   --disable-amd3dnow       disable 3DNow! optimizations
 260   --disable-amd3dnowext    disable 3DNow! extended optimizations
 261   --disable-mmx            disable MMX optimizations
 262   --disable-mmxext         disable MMXEXT optimizations
 263   --disable-sse            disable SSE optimizations
 264   --disable-sse2           disable SSE2 optimizations
 265   --disable-sse3           disable SSE3 optimizations
 266   --disable-ssse3          disable SSSE3 optimizations
 267   --disable-sse4           disable SSE4 optimizations
 268   --disable-sse42          disable SSE4.2 optimizations
 269   --disable-avx            disable AVX optimizations
 270   --disable-fma4           disable FMA4 optimizations
 271   --disable-armv5te        disable armv5te optimizations
 272   --disable-armv6          disable armv6 optimizations
 273   --disable-armv6t2        disable armv6t2 optimizations
 274   --disable-vfp            disable VFP optimizations
 275   --disable-neon           disable NEON optimizations
 276   --disable-vis            disable VIS optimizations
 277   --disable-inline-asm     disable use of inline assembler
 278   --disable-yasm           disable use of yasm assembler
 279
 280 Developer options (useful when working on Libav itself):
 281   --disable-debug          disable debugging symbols
 282   --enable-debug=LEVEL     set the debug level [$debuglevel]
 283   --disable-optimizations  disable compiler optimizations
 284   --enable-extra-warnings  enable more compiler warnings
 285   --samples=PATH           location of test samples for FATE, if not set use
 286                            \$LIBAV_SAMPLES at make invocation time.
 287   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 288                            should be used only for debugging purposes)
 289   --enable-random          randomly enable/disable components
 290   --disable-random
 291   --enable-random=LIST     randomly enable/disable specific components or
 292   --disable-random=LIST    component groups. LIST is a comma-separated list
 293                            of NAME[:PROB] entries where NAME is a component
 294                            (group) and PROB the probability associated with
 295                            NAME (default 0.5).
 296   --random-seed=VALUE      seed value for --enable/disable-random
 297
 298 NOTE: Object files are built at the place where configure is launched.
 299 EOF
 300   exit 0
 301 }
 302
 303 quotes='""'
 304
 305 log(){
 306     echo "$@" >> $logfile
 307 }
 308
 309 log_file(){
 310     log BEGIN $1
 311     pr -n -t $1 >> $logfile
 312     log END $1
 313 }
 314
 315 echolog(){
 316     log "$@"
 317     echo "$@"
 318 }
 319
 320 warn(){
 321     log "WARNING: $*"
 322     WARNINGS="${WARNINGS}WARNING: $*\n"
 323 }
 324
 325 die(){
 326     echolog "$@"
 327     cat <<EOF
 328
 329 If you think configure made a mistake, make sure you are using the latest
 330 version from Git.  If the latest version fails, report the problem to the
 331 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
 332 EOF
 333     if disabled logging; then
 334         cat <<EOF
 335 Rerun configure with logging enabled (do not use --disable-logging), and
 336 include the log this produces with your report.
 337 EOF
 338     else
 339         cat <<EOF
 340 Include the log file "$logfile" produced by configure as this will help
 341 solving the problem.
 342 EOF
 343     fi
 344     exit 1
 345 }
 346
 347 # Avoid locale weirdness, besides we really just want to translate ASCII.
 348 toupper(){
 349     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 350 }
 351
 352 tolower(){
 353     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 354 }
 355
 356 c_escape(){
 357     echo "$*" | sed 's/["\\]/\\\0/g'
 358 }
 359
 360 sh_quote(){
 361     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 362     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 363     echo "$v"
 364 }
 365
 366 cleanws(){
 367     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 368 }
 369
 370 filter(){
 371     pat=$1
 372     shift
 373     for v; do
 374         eval "case $v in $pat) echo $v ;; esac"
 375     done
 376 }
 377
 378 filter_out(){
 379     pat=$1
 380     shift
 381     for v; do
 382         eval "case $v in $pat) ;; *) echo $v ;; esac"
 383     done
 384 }
 385
 386 map(){
 387     m=$1
 388     shift
 389     for v; do eval $m; done
 390 }
 391
 392 add_suffix(){
 393     suffix=$1
 394     shift
 395     for v; do echo ${v}${suffix}; done
 396 }
 397
 398 set_all(){
 399     value=$1
 400     shift
 401     for var in $*; do
 402         eval $var=$value
 403     done
 404 }
 405
 406 set_weak(){
 407     value=$1
 408     shift
 409     for var; do
 410         eval : \${$var:=$value}
 411     done
 412 }
 413
 414 sanitize_var_name(){
 415     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 416 }
 417
 418 set_safe(){
 419     var=$1
 420     shift
 421     eval $(sanitize_var_name "$var")='$*'
 422 }
 423
 424 get_safe(){
 425     eval echo \$$(sanitize_var_name "$1")
 426 }
 427
 428 pushvar(){
 429     for pvar in $*; do
 430         eval level=\${${pvar}_level:=0}
 431         eval ${pvar}_${level}="\$$pvar"
 432         eval ${pvar}_level=$(($level+1))
 433     done
 434 }
 435
 436 popvar(){
 437     for pvar in $*; do
 438         eval level=\${${pvar}_level:-0}
 439         test $level = 0 && continue
 440         eval level=$(($level-1))
 441         eval $pvar="\${${pvar}_${level}}"
 442         eval ${pvar}_level=$level
 443         eval unset ${pvar}_${level}
 444     done
 445 }
 446
 447 enable(){
 448     set_all yes $*
 449 }
 450
 451 disable(){
 452     set_all no $*
 453 }
 454
 455 enable_weak(){
 456     set_weak yes $*
 457 }
 458
 459 disable_weak(){
 460     set_weak no $*
 461 }
 462
 463 enable_safe(){
 464     for var; do
 465         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 466     done
 467 }
 468
 469 disable_safe(){
 470     for var; do
 471         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 472     done
 473 }
 474
 475 do_enable_deep(){
 476     for var; do
 477         enabled $var && continue
 478         eval sel="\$${var}_select"
 479         eval sgs="\$${var}_suggest"
 480         pushvar var sgs
 481         enable_deep $sel
 482         popvar sgs
 483         enable_deep_weak $sgs
 484         popvar var
 485     done
 486 }
 487
 488 enable_deep(){
 489     do_enable_deep $*
 490     enable $*
 491 }
 492
 493 enable_deep_weak(){
 494     for var; do
 495         disabled $var && continue
 496         pushvar var
 497         do_enable_deep $var
 498         popvar var
 499         enable_weak $var
 500     done
 501 }
 502
 503 enabled(){
 504     test "${1#!}" = "$1" && op== || op=!=
 505     eval test "x\$${1#!}" $op "xyes"
 506 }
 507
 508 disabled(){
 509     test "${1#!}" = "$1" && op== || op=!=
 510     eval test "x\$${1#!}" $op "xno"
 511 }
 512
 513 enabled_all(){
 514     for opt; do
 515         enabled $opt || return 1
 516     done
 517 }
 518
 519 disabled_all(){
 520     for opt; do
 521         disabled $opt || return 1
 522     done
 523 }
 524
 525 enabled_any(){
 526     for opt; do
 527         enabled $opt && return 0
 528     done
 529 }
 530
 531 disabled_any(){
 532     for opt; do
 533         disabled $opt && return 0
 534     done
 535     return 1
 536 }
 537
 538 set_default(){
 539     for opt; do
 540         eval : \${$opt:=\$${opt}_default}
 541     done
 542 }
 543
 544 is_in(){
 545     value=$1
 546     shift
 547     for var in $*; do
 548         [ $var = $value ] && return 0
 549     done
 550     return 1
 551 }
 552
 553 do_check_deps(){
 554     for cfg; do
 555         cfg="${cfg#!}"
 556         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 557         disabled ${cfg}_checking && continue
 558         enable ${cfg}_checking
 559         append allopts $cfg
 560
 561         eval dep_all="\$${cfg}_deps"
 562         eval dep_any="\$${cfg}_deps_any"
 563         eval dep_sel="\$${cfg}_select"
 564         eval dep_sgs="\$${cfg}_suggest"
 565         eval dep_ifa="\$${cfg}_if"
 566         eval dep_ifn="\$${cfg}_if_any"
 567
 568         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 569         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 570         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 571
 572         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 573         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 574         enabled_all  $dep_all || disable $cfg
 575         enabled_any  $dep_any || disable $cfg
 576         disabled_any $dep_sel && disable $cfg
 577
 578         if enabled $cfg; then
 579             enable_deep $dep_sel
 580             enable_deep_weak $dep_sgs
 581         fi
 582
 583         disable ${cfg}_checking
 584     done
 585 }
 586
 587 check_deps(){
 588     unset allopts
 589
 590     do_check_deps "$@"
 591
 592     for cfg in $allopts; do
 593         enabled $cfg || continue
 594         eval dep_extralibs="\$${cfg}_extralibs"
 595         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 596     done
 597 }
 598
 599 print_config(){
 600     pfx=$1
 601     files=$2
 602     shift 2
 603     map 'eval echo "$v \${$v:-no}"' "$@" |
 604     awk "BEGIN { split(\"$files\", files) }
 605         {
 606             c = \"$pfx\" toupper(\$1);
 607             v = \$2;
 608             sub(/yes/, 1, v);
 609             sub(/no/,  0, v);
 610             for (f in files) {
 611                 file = files[f];
 612                 if (file ~ /\\.h\$/) {
 613                     printf(\"#define %s %d\\n\", c, v) >>file;
 614                 } else if (file ~ /\\.asm\$/) {
 615                     printf(\"%%define %s %d\\n\", c, v) >>file;
 616                 } else if (file ~ /\\.mak\$/) {
 617                     n = -v ? \"\" : \"!\";
 618                     printf(\"%s%s=yes\\n\", n, c) >>file;
 619                 }
 620             }
 621         }"
 622 }
 623
 624 print_enabled(){
 625     suf=$1
 626     shift
 627     for v; do
 628         enabled $v && printf "%s\n" ${v%$suf};
 629     done
 630 }
 631
 632 append(){
 633     var=$1
 634     shift
 635     eval "$var=\"\$$var $*\""
 636 }
 637
 638 prepend(){
 639     var=$1
 640     shift
 641     eval "$var=\"$* \$$var\""
 642 }
 643
 644 add_cppflags(){
 645     append CPPFLAGS "$@"
 646 }
 647
 648 add_cflags(){
 649     append CFLAGS $($cflags_filter "$@")
 650 }
 651
 652 add_asflags(){
 653     append ASFLAGS $($asflags_filter "$@")
 654 }
 655
 656 add_ldflags(){
 657     append LDFLAGS $($ldflags_filter "$@")
 658 }
 659
 660 add_extralibs(){
 661     prepend extralibs $($ldflags_filter "$@")
 662 }
 663
 664 add_host_cppflags(){
 665     append host_cppflags "$@"
 666 }
 667
 668 add_host_cflags(){
 669     append host_cflags $($host_cflags_filter "$@")
 670 }
 671
 672 add_host_ldflags(){
 673     append host_ldflags $($host_ldflags_filter "$@")
 674 }
 675
 676 add_compat(){
 677     append compat_objs $1
 678     shift
 679     map 'add_cppflags -D$v' "$@"
 680 }
 681
 682 check_cmd(){
 683     log "$@"
 684     "$@" >> $logfile 2>&1
 685 }
 686
 687 cc_o(){
 688     eval printf '%s\\n' $CC_O
 689 }
 690
 691 cc_e(){
 692     eval printf '%s\\n' $CC_E
 693 }
 694
 695 check_cc(){
 696     log check_cc "$@"
 697     cat > $TMPC
 698     log_file $TMPC
 699     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 700 }
 701
 702 check_cpp(){
 703     log check_cpp "$@"
 704     cat > $TMPC
 705     log_file $TMPC
 706     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 707 }
 708
 709 as_o(){
 710     eval printf '%s\\n' $AS_O
 711 }
 712
 713 check_as(){
 714     log check_as "$@"
 715     cat > $TMPS
 716     log_file $TMPS
 717     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 718 }
 719
 720 check_inline_asm(){
 721     log check_inline_asm "$@"
 722     name="$1"
 723     code="$2"
 724     shift 2
 725     disable $name
 726     check_cc "$@" <<EOF && enable $name
 727 void foo(void){ __asm__ volatile($code); }
 728 EOF
 729 }
 730
 731 check_insn(){
 732     log check_insn "$@"
 733     check_inline_asm ${1}_inline "\"$2\""
 734     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 735 }
 736
 737 check_yasm(){
 738     log check_yasm "$@"
 739     echo "$1" > $TMPS
 740     log_file $TMPS
 741     shift 1
 742     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 743 }
 744
 745 ld_o(){
 746     eval printf '%s\\n' $LD_O
 747 }
 748
 749 check_ld(){
 750     log check_ld "$@"
 751     flags=$(filter_out '-l*' "$@")
 752     libs=$(filter '-l*' "$@")
 753     check_cc $($cflags_filter $flags) || return
 754     flags=$($ldflags_filter $flags)
 755     libs=$($ldflags_filter $libs)
 756     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 757 }
 758
 759 check_code(){
 760     log check_code "$@"
 761     check=$1
 762     headers=$2
 763     code=$3
 764     shift 3
 765     {
 766         for hdr in $headers; do
 767             echo "#include <$hdr>"
 768         done
 769         echo "int main(void) { $code; return 0; }"
 770     } | check_$check "$@"
 771 }
 772
 773 check_cppflags(){
 774     log check_cppflags "$@"
 775     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 776 int x;
 777 EOF
 778 }
 779
 780 check_cflags(){
 781     log check_cflags "$@"
 782     set -- $($cflags_filter "$@")
 783     check_cc "$@" <<EOF && append CFLAGS "$@"
 784 int x;
 785 EOF
 786 }
 787
 788 test_ldflags(){
 789     log test_ldflags "$@"
 790     check_ld "$@" <<EOF
 791 int main(void){ return 0; }
 792 EOF
 793 }
 794
 795 check_ldflags(){
 796     log check_ldflags "$@"
 797     test_ldflags "$@" && add_ldflags "$@"
 798 }
 799
 800 check_header(){
 801     log check_header "$@"
 802     header=$1
 803     shift
 804     disable_safe $header
 805     check_cpp "$@" <<EOF && enable_safe $header
 806 #include <$header>
 807 int x;
 808 EOF
 809 }
 810
 811 check_func(){
 812     log check_func "$@"
 813     func=$1
 814     shift
 815     disable $func
 816     check_ld "$@" <<EOF && enable $func
 817 extern int $func();
 818 int main(void){ $func(); }
 819 EOF
 820 }
 821
 822 check_mathfunc(){
 823     log check_mathfunc "$@"
 824     func=$1
 825     narg=$2
 826     shift 2
 827     test $narg = 2 && args="f, g" || args="f"
 828     disable $func
 829     check_ld "$@" <<EOF && enable $func
 830 #include <math.h>
 831 float foo(float f, float g) { return $func($args); }
 832 int main(void){ return 0; }
 833 EOF
 834 }
 835
 836 check_func_headers(){
 837     log check_func_headers "$@"
 838     headers=$1
 839     funcs=$2
 840     shift 2
 841     {
 842         for hdr in $headers; do
 843             echo "#include <$hdr>"
 844         done
 845         for func in $funcs; do
 846             echo "long check_$func(void) { return (long) $func; }"
 847         done
 848         echo "int main(void) { return 0; }"
 849     } | check_ld "$@" && enable $funcs && enable_safe $headers
 850 }
 851
 852 check_cpp_condition(){
 853     log check_cpp_condition "$@"
 854     header=$1
 855     condition=$2
 856     shift 2
 857     check_cpp "$@" <<EOF
 858 #include <$header>
 859 #if !($condition)
 860 #error "unsatisfied condition: $condition"
 861 #endif
 862 EOF
 863 }
 864
 865 check_lib(){
 866     log check_lib "$@"
 867     header="$1"
 868     func="$2"
 869     shift 2
 870     check_header $header && check_func $func "$@" && add_extralibs "$@"
 871 }
 872
 873 check_lib2(){
 874     log check_lib2 "$@"
 875     headers="$1"
 876     funcs="$2"
 877     shift 2
 878     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 879 }
 880
 881 check_pkg_config(){
 882     log check_pkg_config "$@"
 883     pkg="$1"
 884     headers="$2"
 885     funcs="$3"
 886     shift 3
 887     $pkg_config --exists $pkg || return
 888     pkg_cflags=$($pkg_config --cflags $pkg)
 889     pkg_libs=$($pkg_config --libs $pkg)
 890     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 891         set_safe ${pkg}_cflags $pkg_cflags   &&
 892         set_safe ${pkg}_libs   $pkg_libs
 893 }
 894
 895 check_exec(){
 896     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 897 }
 898
 899 check_exec_crash(){
 900     code=$(cat)
 901
 902     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 903     # are safe but may not be available everywhere.  Thus we use
 904     # raise(SIGTERM) instead.  The check is run in a subshell so we
 905     # can redirect the "Terminated" message from the shell.  SIGBUS
 906     # is not defined by standard C so it is used conditionally.
 907
 908     (check_exec "$@") >> $logfile 2>&1 <<EOF
 909 #include <signal.h>
 910 static void sighandler(int sig){
 911     raise(SIGTERM);
 912 }
 913 int foo(void){
 914     $code
 915 }
 916 int (*func_ptr)(void) = foo;
 917 int main(void){
 918     signal(SIGILL, sighandler);
 919     signal(SIGFPE, sighandler);
 920     signal(SIGSEGV, sighandler);
 921 #ifdef SIGBUS
 922     signal(SIGBUS, sighandler);
 923 #endif
 924     return func_ptr();
 925 }
 926 EOF
 927 }
 928
 929 check_type(){
 930     log check_type "$@"
 931     headers=$1
 932     type=$2
 933     shift 2
 934     disable_safe "$type"
 935     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 936 }
 937
 938 check_struct(){
 939     log check_struct "$@"
 940     headers=$1
 941     struct=$2
 942     member=$3
 943     shift 3
 944     disable_safe "${struct}_${member}"
 945     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 946         enable_safe "${struct}_${member}"
 947 }
 948
 949 check_builtin(){
 950     log check_builtin "$@"
 951     name=$1
 952     headers=$2
 953     builtin=$3
 954     shift 3
 955     disable "$name"
 956     check_code ld "$headers" "$builtin" "$@" && enable "$name"
 957 }
 958
 959 require(){
 960     name="$1"
 961     header="$2"
 962     func="$3"
 963     shift 3
 964     check_lib $header $func "$@" || die "ERROR: $name not found"
 965 }
 966
 967 require2(){
 968     name="$1"
 969     headers="$2"
 970     func="$3"
 971     shift 3
 972     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
 973 }
 974
 975 require_pkg_config(){
 976     pkg="$1"
 977     check_pkg_config "$@" || die "ERROR: $pkg not found"
 978     add_cflags    $(get_safe ${pkg}_cflags)
 979     add_extralibs $(get_safe ${pkg}_libs)
 980 }
 981
 982 hostcc_o(){
 983     eval printf '%s\\n' $HOSTCC_O
 984 }
 985
 986 check_host_cc(){
 987     log check_host_cc "$@"
 988     cat > $TMPC
 989     log_file $TMPC
 990     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
 991 }
 992
 993 check_host_cppflags(){
 994     log check_host_cppflags "$@"
 995     check_host_cc "$@" <<EOF && append host_cppflags "$@"
 996 int x;
 997 EOF
 998 }
 999
1000 check_host_cflags(){
1001     log check_host_cflags "$@"
1002     set -- $($host_cflags_filter "$@")
1003     check_host_cc "$@" <<EOF && append host_cflags "$@"
1004 int x;
1005 EOF
1006 }
1007
1008 apply(){
1009     file=$1
1010     shift
1011     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1012 }
1013
1014 cp_if_changed(){
1015     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1016     mkdir -p "$(dirname $2)"
1017     $cp_f "$1" "$2"
1018 }
1019
1020 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1021 # system-dependent things.
1022
1023 COMPONENT_LIST="
1024     bsfs
1025     decoders
1026     demuxers
1027     encoders
1028     filters
1029     hwaccels
1030     indevs
1031     muxers
1032     outdevs
1033     parsers
1034     protocols
1035 "
1036
1037 EXTERNAL_LIBRARY_LIST="
1038     avisynth
1039     bzlib
1040     frei0r
1041     gnutls
1042     libcdio
1043     libdc1394
1044     libfaac
1045     libfdk_aac
1046     libfreetype
1047     libgsm
1048     libilbc
1049     libmp3lame
1050     libopencore_amrnb
1051     libopencore_amrwb
1052     libopencv
1053     libopenjpeg
1054     libopus
1055     libpulse
1056     librtmp
1057     libschroedinger
1058     libspeex
1059     libtheora
1060     libvo_aacenc
1061     libvo_amrwbenc
1062     libvorbis
1063     libvpx
1064     libwavpack
1065     libx264
1066     libxavs
1067     libxvid
1068     openssl
1069     x11grab
1070     zlib
1071 "
1072
1073 HWACCEL_LIST="
1074     dxva2
1075     vaapi
1076     vda
1077     vdpau
1078 "
1079 LIBRARY_LIST="
1080     avcodec
1081     avdevice
1082     avfilter
1083     avformat
1084     avresample
1085     avutil
1086     swscale
1087 "
1088
1089 PROGRAM_LIST="
1090     avconv
1091     avplay
1092     avprobe
1093     avserver
1094 "
1095
1096 CONFIG_LIST="
1097     $COMPONENT_LIST
1098     $EXTERNAL_LIBRARY_LIST
1099     $HWACCEL_LIST
1100     $LIBRARY_LIST
1101     $PROGRAM_LIST
1102     dct
1103     doc
1104     error_resilience
1105     fft
1106     gpl
1107     gray
1108     hardcoded_tables
1109     lsp
1110     lzo
1111     mdct
1112     memalign_hack
1113     network
1114     nonfree
1115     pic
1116     rdft
1117     runtime_cpudetect
1118     safe_bitstream_reader
1119     shared
1120     small
1121     sram
1122     static
1123     swscale_alpha
1124     thumb
1125     version3
1126     xmm_clobber_test
1127 "
1128
1129 THREADS_LIST='
1130     pthreads
1131     w32threads
1132 '
1133
1134 ATOMICS_LIST='
1135     atomics_gcc
1136     atomics_suncc
1137     atomics_win32
1138 '
1139
1140 ARCH_LIST='
1141     aarch64
1142     alpha
1143     arm
1144     avr32
1145     avr32_ap
1146     avr32_uc
1147     bfin
1148     ia64
1149     m68k
1150     mips
1151     mips64
1152     parisc
1153     ppc
1154     ppc64
1155     s390
1156     sh4
1157     sparc
1158     sparc64
1159     tilegx
1160     tilepro
1161     tomi
1162     x86
1163     x86_32
1164     x86_64
1165 '
1166
1167 ARCH_EXT_LIST_ARM='
1168     armv5te
1169     armv6
1170     armv6t2
1171     neon
1172     vfp
1173     vfpv3
1174 '
1175
1176 ARCH_EXT_LIST_X86='
1177     amd3dnow
1178     amd3dnowext
1179     avx
1180     fma4
1181     mmx
1182     mmxext
1183     sse
1184     sse2
1185     sse3
1186     sse4
1187     sse42
1188     ssse3
1189 '
1190
1191 ARCH_EXT_LIST="
1192     $ARCH_EXT_LIST_ARM
1193     $ARCH_EXT_LIST_X86
1194     altivec
1195     ppc4xx
1196     vis
1197 "
1198
1199 HAVE_LIST_CMDLINE='
1200     inline_asm
1201     symver
1202     yasm
1203 '
1204
1205 HAVE_LIST_PUB='
1206     bigendian
1207     fast_unaligned
1208 '
1209
1210 MATH_FUNCS="
1211     atanf
1212     atan2f
1213     cbrtf
1214     cosf
1215     exp2
1216     exp2f
1217     expf
1218     isinf
1219     isnan
1220     ldexpf
1221     llrint
1222     llrintf
1223     log2
1224     log2f
1225     log10f
1226     lrint
1227     lrintf
1228     powf
1229     rint
1230     round
1231     roundf
1232     sinf
1233     trunc
1234     truncf
1235 "
1236
1237 HAVE_LIST="
1238     $ARCH_EXT_LIST
1239     $(add_suffix _external $ARCH_EXT_LIST)
1240     $(add_suffix _inline   $ARCH_EXT_LIST)
1241     $HAVE_LIST_CMDLINE
1242     $HAVE_LIST_PUB
1243     $THREADS_LIST
1244     $ATOMICS_LIST
1245     $MATH_FUNCS
1246     aligned_malloc
1247     aligned_stack
1248     alsa_asoundlib_h
1249     altivec_h
1250     arpa_inet_h
1251     asm_mod_q
1252     asm_mod_y
1253     atomic_cas_ptr
1254     atomics_native
1255     attribute_may_alias
1256     attribute_packed
1257     cdio_paranoia_h
1258     cdio_paranoia_paranoia_h
1259     closesocket
1260     CommandLineToArgvW
1261     cpunop
1262     CryptGenRandom
1263     dcbzl
1264     dev_bktr_ioctl_bt848_h
1265     dev_bktr_ioctl_meteor_h
1266     dev_ic_bt8xx_h
1267     dev_video_bktr_ioctl_bt848_h
1268     dev_video_meteor_ioctl_meteor_h
1269     direct_h
1270     dlfcn_h
1271     dlopen
1272     dos_paths
1273     dxva_h
1274     ebp_available
1275     ebx_available
1276     fast_64bit
1277     fast_clz
1278     fast_cmov
1279     fcntl
1280     fork
1281     getaddrinfo
1282     gethrtime
1283     getopt
1284     GetProcessAffinityMask
1285     GetProcessMemoryInfo
1286     GetProcessTimes
1287     GetSystemTimeAsFileTime
1288     getrusage
1289     getservbyport
1290     gettimeofday
1291     gnu_as
1292     gsm_h
1293     i686
1294     ibm_asm
1295     inet_aton
1296     io_h
1297     inline_asm_labels
1298     isatty
1299     jack_port_get_latency_range
1300     ldbrx
1301     libdc1394_1
1302     libdc1394_2
1303     local_aligned_16
1304     local_aligned_8
1305     localtime_r
1306     loongson
1307     machine_ioctl_bt848_h
1308     machine_ioctl_meteor_h
1309     machine_rw_barrier
1310     malloc_h
1311     MapViewOfFile
1312     memalign
1313     MemoryBarrier
1314     mkstemp
1315     mm_empty
1316     mmap
1317     mprotect
1318     msvcrt
1319     nanosleep
1320     poll_h
1321     posix_memalign
1322     pragma_deprecated
1323     rdtsc
1324     sched_getaffinity
1325     sdl
1326     SetConsoleTextAttribute
1327     setmode
1328     setrlimit
1329     Sleep
1330     sndio_h
1331     socklen_t
1332     soundcard_h
1333     strerror_r
1334     strptime
1335     strtok_r
1336     struct_addrinfo
1337     struct_group_source_req
1338     struct_ip_mreq_source
1339     struct_ipv6_mreq
1340     struct_pollfd
1341     struct_rusage_ru_maxrss
1342     struct_sockaddr_in6
1343     struct_sockaddr_sa_len
1344     struct_sockaddr_storage
1345     struct_v4l2_frmivalenum_discrete
1346     symver_asm_label
1347     symver_gnu_asm
1348     sync_val_compare_and_swap
1349     sysconf
1350     sysctl
1351     sys_mman_h
1352     sys_param_h
1353     sys_resource_h
1354     sys_select_h
1355     sys_soundcard_h
1356     sys_time_h
1357     sys_un_h
1358     sys_videoio_h
1359     threads
1360     unistd_h
1361     usleep
1362     vfp_args
1363     VirtualAlloc
1364     windows_h
1365     winsock2_h
1366     xform_asm
1367     xmm_clobbers
1368 "
1369
1370 # options emitted with CONFIG_ prefix but not available on the command line
1371 CONFIG_EXTRA="
1372     aandcttables
1373     ac3dsp
1374     audio_frame_queue
1375     dsputil
1376     gcrypt
1377     golomb
1378     gplv3
1379     h264chroma
1380     h264dsp
1381     h264pred
1382     h264qpel
1383     hpeldsp
1384     huffman
1385     lgplv3
1386     lpc
1387     mpegaudio
1388     mpegaudiodsp
1389     mpegvideo
1390     mpegvideoenc
1391     nettle
1392     rangecoder
1393     riffenc
1394     rtpdec
1395     rtpenc_chain
1396     sinewin
1397     videodsp
1398     vp3dsp
1399 "
1400
1401 CMDLINE_SELECT="
1402     $ARCH_EXT_LIST
1403     $CONFIG_LIST
1404     $HAVE_LIST_CMDLINE
1405     $THREADS_LIST
1406     asm
1407     cross_compile
1408     debug
1409     extra_warnings
1410     logging
1411     lto
1412     optimizations
1413 "
1414
1415 PATHS_LIST='
1416     bindir
1417     datadir
1418     incdir
1419     libdir
1420     mandir
1421     prefix
1422     shlibdir
1423 '
1424
1425 CMDLINE_SET="
1426     $PATHS_LIST
1427     ar
1428     arch
1429     as
1430     build_suffix
1431     cc
1432     cpu
1433     cross_prefix
1434     dep_cc
1435     extra_version
1436     host_cc
1437     host_cflags
1438     host_ld
1439     host_ldflags
1440     host_libs
1441     host_os
1442     ld
1443     logfile
1444     malloc_prefix
1445     nm
1446     optflags
1447     pkg_config
1448     random_seed
1449     samples
1450     sysinclude
1451     sysroot
1452     target_exec
1453     target_os
1454     target_path
1455     target_samples
1456     toolchain
1457 "
1458
1459 CMDLINE_APPEND="
1460     extra_cflags
1461     host_cppflags
1462 "
1463
1464 # code dependency declarations
1465
1466 # architecture extensions
1467
1468 armv5te_deps="arm"
1469 armv6_deps="arm"
1470 armv6t2_deps="arm"
1471 neon_deps="arm"
1472 vfp_deps="arm"
1473 vfpv3_deps="vfp"
1474
1475 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1476
1477 altivec_deps="ppc"
1478 ppc4xx_deps="ppc"
1479
1480 vis_deps="sparc"
1481
1482 x86_64_suggest="fast_cmov i686"
1483
1484 amd3dnow_deps="mmx"
1485 amd3dnowext_deps="amd3dnow"
1486 mmx_deps="x86"
1487 mmxext_deps="mmx"
1488 sse_deps="mmxext"
1489 sse2_deps="sse"
1490 sse3_deps="sse2"
1491 ssse3_deps="sse3"
1492 sse4_deps="ssse3"
1493 sse42_deps="sse4"
1494 avx_deps="sse42"
1495 fma4_deps="avx"
1496
1497 mmx_external_deps="yasm"
1498 mmx_inline_deps="inline_asm"
1499 mmx_suggest="mmx_external mmx_inline"
1500
1501 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1502     eval dep=\$${ext}_deps
1503     eval ${ext}_external_deps='"${dep}_external"'
1504     eval ${ext}_inline_deps='"${dep}_inline"'
1505     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1506 done
1507
1508 aligned_stack_if_any="ppc x86"
1509 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1510 fast_clz_if_any="alpha avr32 mips ppc x86"
1511 fast_unaligned_if_any="ppc x86"
1512
1513 inline_asm_deps="!tms470"
1514 need_memalign="altivec neon sse"
1515
1516 symver_if_any="symver_asm_label symver_gnu_asm"
1517
1518 log2_deps="!msvcrt"
1519
1520 # subsystems
1521 dct_select="rdft"
1522 error_resilience_select="dsputil"
1523 lpc_select="dsputil"
1524 mdct_select="fft"
1525 rdft_select="fft"
1526 mpegaudio_select="mpegaudiodsp"
1527 mpegaudiodsp_select="dct"
1528 mpegvideo_select="dsputil hpeldsp videodsp"
1529 mpegvideoenc_select="mpegvideo"
1530
1531 # decoders / encoders
1532 aac_decoder_select="mdct sinewin"
1533 aac_encoder_select="audio_frame_queue mdct sinewin"
1534 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1535 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1536 ac3_encoder_select="mdct ac3dsp dsputil"
1537 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1538 aic_decoder_select="dsputil golomb"
1539 alac_encoder_select="lpc"
1540 als_decoder_select="dsputil"
1541 amrnb_decoder_select="lsp"
1542 amrwb_decoder_select="lsp"
1543 amv_decoder_select="dsputil hpeldsp"
1544 ape_decoder_select="dsputil"
1545 asv1_decoder_select="dsputil"
1546 asv1_encoder_select="dsputil"
1547 asv2_decoder_select="dsputil"
1548 asv2_encoder_select="dsputil"
1549 atrac1_decoder_select="mdct sinewin"
1550 atrac3_decoder_select="mdct"
1551 bink_decoder_select="dsputil hpeldsp"
1552 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1553 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1554 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1555 cllc_decoder_select="dsputil"
1556 comfortnoise_encoder_select="lpc"
1557 cook_decoder_select="dsputil mdct sinewin"
1558 cscd_decoder_select="lzo"
1559 cscd_decoder_suggest="zlib"
1560 dca_decoder_select="mdct"
1561 dnxhd_decoder_select="dsputil"
1562 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1563 dvvideo_decoder_select="dsputil"
1564 dvvideo_encoder_select="dsputil"
1565 dxa_decoder_select="zlib"
1566 eac3_decoder_select="ac3_decoder"
1567 eac3_encoder_select="ac3_encoder"
1568 eamad_decoder_select="aandcttables dsputil mpegvideo"
1569 eatgq_decoder_select="aandcttables dsputil"
1570 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1571 ffv1_decoder_select="dsputil golomb rangecoder"
1572 ffv1_encoder_select="dsputil rangecoder"
1573 ffvhuff_decoder_select="dsputil"
1574 ffvhuff_encoder_select="dsputil huffman"
1575 flac_decoder_select="golomb"
1576 flac_encoder_select="dsputil golomb lpc"
1577 flashsv_decoder_select="zlib"
1578 flashsv_encoder_select="zlib"
1579 flashsv2_decoder_select="zlib"
1580 flv_decoder_select="h263_decoder"
1581 flv_encoder_select="h263_encoder"
1582 fourxm_decoder_select="dsputil"
1583 fraps_decoder_select="dsputil huffman"
1584 g2m_decoder_select="dsputil zlib"
1585 h261_decoder_select="error_resilience mpegvideo"
1586 h261_encoder_select="aandcttables mpegvideoenc"
1587 h263_decoder_select="error_resilience h263_parser mpegvideo"
1588 h263_encoder_select="aandcttables mpegvideoenc"
1589 h263i_decoder_select="h263_decoder"
1590 h263p_encoder_select="h263_encoder"
1591 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1592 h264_decoder_suggest="error_resilience"
1593 huffyuv_decoder_select="dsputil"
1594 huffyuv_encoder_select="dsputil huffman"
1595 iac_decoder_select="dsputil fft mdct sinewin"
1596 imc_decoder_select="dsputil fft mdct sinewin"
1597 indeo3_decoder_select="hpeldsp"
1598 interplay_video_decoder_select="hpeldsp"
1599 jpegls_decoder_select="dsputil golomb hpeldsp"
1600 jpegls_encoder_select="golomb"
1601 jv_decoder_select="dsputil"
1602 lagarith_decoder_select="dsputil"
1603 ljpeg_encoder_select="aandcttables mpegvideoenc"
1604 loco_decoder_select="golomb"
1605 mdec_decoder_select="dsputil error_resilience mpegvideo"
1606 mimic_decoder_select="dsputil hpeldsp"
1607 mjpeg_decoder_select="dsputil hpeldsp"
1608 mjpegb_decoder_select="dsputil hpeldsp"
1609 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1610 mlp_decoder_select="dsputil mlp_parser"
1611 motionpixels_decoder_select="dsputil"
1612 mp1_decoder_select="mpegaudio"
1613 mp1float_decoder_select="mpegaudio"
1614 mp2_decoder_select="mpegaudio"
1615 mp2float_decoder_select="mpegaudio"
1616 mp3_decoder_select="mpegaudio"
1617 mp3adu_decoder_select="mpegaudio"
1618 mp3adufloat_decoder_select="mpegaudio"
1619 mp3float_decoder_select="mpegaudio"
1620 mp3on4_decoder_select="mpegaudio"
1621 mp3on4float_decoder_select="mpegaudio"
1622 mpc7_decoder_select="dsputil mpegaudiodsp"
1623 mpc8_decoder_select="dsputil mpegaudiodsp"
1624 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1625 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1626 mpeg1video_decoder_select="error_resilience mpegvideo"
1627 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1628 mpeg2video_decoder_select="error_resilience mpegvideo"
1629 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1630 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1631 mpeg4_encoder_select="h263_encoder"
1632 msmpeg4v1_decoder_select="h263_decoder"
1633 msmpeg4v2_decoder_select="h263_decoder"
1634 msmpeg4v2_encoder_select="h263_encoder"
1635 msmpeg4v3_decoder_select="h263_decoder"
1636 msmpeg4v3_encoder_select="h263_encoder"
1637 mss2_decoder_select="error_resilience vc1_decoder"
1638 mxpeg_decoder_select="dsputil hpeldsp"
1639 nellymoser_decoder_select="mdct sinewin"
1640 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1641 nuv_decoder_select="dsputil lzo"
1642 png_decoder_select="dsputil zlib"
1643 png_encoder_select="dsputil zlib"
1644 prores_decoder_select="dsputil"
1645 prores_encoder_select="dsputil"
1646 qcelp_decoder_select="lsp"
1647 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1648 ra_144_encoder_select="audio_frame_queue lpc"
1649 ralf_decoder_select="golomb"
1650 rv10_decoder_select="error_resilience h263_decoder"
1651 rv10_encoder_select="h263_encoder"
1652 rv20_decoder_select="error_resilience h263_decoder"
1653 rv20_encoder_select="h263_encoder"
1654 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1655 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1656 shorten_decoder_select="golomb"
1657 sipr_decoder_select="lsp"
1658 sp5x_decoder_select="dsputil hpeldsp"
1659 svq1_decoder_select="hpeldsp"
1660 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1661 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1662 svq3_decoder_suggest="error_resilience zlib"
1663 tak_decoder_select="dsputil"
1664 theora_decoder_select="vp3_decoder"
1665 tiff_decoder_suggest="zlib"
1666 tiff_encoder_suggest="zlib"
1667 thp_decoder_select="dsputil hpeldsp"
1668 truehd_decoder_select="mlp_decoder"
1669 truemotion2_decoder_select="dsputil"
1670 truespeech_decoder_select="dsputil"
1671 tscc_decoder_select="zlib"
1672 twinvq_decoder_select="mdct lsp sinewin"
1673 utvideo_decoder_select="dsputil"
1674 utvideo_encoder_select="dsputil huffman"
1675 vble_decoder_select="dsputil"
1676 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1677 vc1image_decoder_select="vc1_decoder"
1678 vorbis_decoder_select="mdct"
1679 vorbis_encoder_select="mdct"
1680 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1681 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1682 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1683 vp6a_decoder_select="vp6_decoder"
1684 vp6f_decoder_select="vp6_decoder"
1685 vp8_decoder_select="h264pred videodsp"
1686 wmapro_decoder_select="mdct sinewin"
1687 wmav1_decoder_select="mdct sinewin"
1688 wmav1_encoder_select="mdct sinewin"
1689 wmav2_decoder_select="mdct sinewin"
1690 wmav2_encoder_select="mdct sinewin"
1691 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1692 wmv1_decoder_select="h263_decoder"
1693 wmv1_encoder_select="h263_encoder"
1694 wmv2_decoder_select="h263_decoder videodsp"
1695 wmv2_encoder_select="h263_encoder"
1696 wmv3_decoder_select="vc1_decoder"
1697 wmv3image_decoder_select="wmv3_decoder"
1698 zerocodec_decoder_select="zlib"
1699 zlib_decoder_select="zlib"
1700 zlib_encoder_select="zlib"
1701 zmbv_decoder_select="zlib"
1702 zmbv_encoder_select="zlib"
1703
1704 # hardware accelerators
1705 dxva2_deps="dxva2api_h"
1706 vaapi_deps="va_va_h"
1707 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1708 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1709 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1710
1711 h263_vaapi_hwaccel_deps="vaapi"
1712 h263_vaapi_hwaccel_select="h263_decoder"
1713 h263_vdpau_hwaccel_deps="vdpau"
1714 h263_vdpau_hwaccel_select="h263_decoder"
1715 h264_dxva2_hwaccel_deps="dxva2"
1716 h264_dxva2_hwaccel_select="h264_decoder"
1717 h264_vaapi_hwaccel_deps="vaapi"
1718 h264_vaapi_hwaccel_select="h264_decoder"
1719 h264_vda_hwaccel_deps="vda"
1720 h264_vda_hwaccel_select="h264_decoder"
1721 h264_vdpau_hwaccel_deps="vdpau"
1722 h264_vdpau_hwaccel_select="h264_decoder"
1723 mpeg1_vdpau_hwaccel_deps="vdpau"
1724 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1725 mpeg2_dxva2_hwaccel_deps="dxva2"
1726 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1727 mpeg2_vaapi_hwaccel_deps="vaapi"
1728 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1729 mpeg2_vdpau_hwaccel_deps="vdpau"
1730 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1731 mpeg4_vaapi_hwaccel_deps="vaapi"
1732 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1733 mpeg4_vdpau_hwaccel_deps="vdpau"
1734 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1735 vc1_dxva2_hwaccel_deps="dxva2"
1736 vc1_dxva2_hwaccel_select="vc1_decoder"
1737 vc1_vaapi_hwaccel_deps="vaapi"
1738 vc1_vaapi_hwaccel_select="vc1_decoder"
1739 vc1_vdpau_hwaccel_deps="vdpau"
1740 vc1_vdpau_hwaccel_select="vc1_decoder"
1741 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1742 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1743 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1744
1745 # parsers
1746 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1747 mpeg4video_parser_select="error_resilience mpegvideo"
1748 mpegvideo_parser_select="error_resilience mpegvideo"
1749 vc1_parser_select="mpegvideo"
1750
1751 # external libraries
1752 libfaac_encoder_deps="libfaac"
1753 libfaac_encoder_select="audio_frame_queue"
1754 libfdk_aac_encoder_deps="libfdk_aac"
1755 libfdk_aac_encoder_select="audio_frame_queue"
1756 libgsm_decoder_deps="libgsm"
1757 libgsm_encoder_deps="libgsm"
1758 libgsm_ms_decoder_deps="libgsm"
1759 libgsm_ms_encoder_deps="libgsm"
1760 libilbc_decoder_deps="libilbc"
1761 libilbc_encoder_deps="libilbc"
1762 libmp3lame_encoder_deps="libmp3lame"
1763 libmp3lame_encoder_select="audio_frame_queue"
1764 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1765 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1766 libopencore_amrnb_encoder_select="audio_frame_queue"
1767 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1768 libopenjpeg_decoder_deps="libopenjpeg"
1769 libopenjpeg_encoder_deps="libopenjpeg"
1770 libopus_decoder_deps="libopus"
1771 libopus_encoder_deps="libopus"
1772 libopus_encoder_select="audio_frame_queue"
1773 libschroedinger_decoder_deps="libschroedinger"
1774 libschroedinger_encoder_deps="libschroedinger"
1775 libspeex_decoder_deps="libspeex"
1776 libspeex_encoder_deps="libspeex"
1777 libspeex_encoder_select="audio_frame_queue"
1778 libtheora_encoder_deps="libtheora"
1779 libvo_aacenc_encoder_deps="libvo_aacenc"
1780 libvo_aacenc_encoder_select="audio_frame_queue"
1781 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1782 libvorbis_encoder_deps="libvorbis"
1783 libvorbis_encoder_select="audio_frame_queue"
1784 libvpx_vp8_decoder_deps="libvpx"
1785 libvpx_vp8_encoder_deps="libvpx"
1786 libvpx_vp9_decoder_deps="libvpx"
1787 libvpx_vp9_encoder_deps="libvpx"
1788 libwavpack_encoder_deps="libwavpack"
1789 libx264_encoder_deps="libx264"
1790 libxavs_encoder_deps="libxavs"
1791 libxvid_encoder_deps="libxvid"
1792
1793 # demuxers / muxers
1794 ac3_demuxer_select="ac3_parser"
1795 asf_muxer_select="riffenc"
1796 asf_stream_muxer_select="asf_muxer"
1797 avi_muxer_select="riffenc"
1798 avisynth_demuxer_deps="avisynth"
1799 dirac_demuxer_select="dirac_parser"
1800 eac3_demuxer_select="ac3_parser"
1801 flac_demuxer_select="flac_parser"
1802 ipod_muxer_select="mov_muxer"
1803 ismv_muxer_select="mov_muxer"
1804 matroska_audio_muxer_select="matroska_muxer"
1805 matroska_demuxer_suggest="bzlib lzo zlib"
1806 matroska_muxer_select="riffenc"
1807 mmf_muxer_select="riffenc"
1808 mov_demuxer_suggest="zlib"
1809 mov_muxer_select="riffenc rtpenc_chain"
1810 mp3_demuxer_select="mpegaudio_parser"
1811 mp4_muxer_select="mov_muxer"
1812 mpegts_muxer_select="adts_muxer latm_muxer"
1813 mpegtsraw_demuxer_select="mpegts_demuxer"
1814 mxf_d10_muxer_select="mxf_muxer"
1815 nut_muxer_select="riffenc"
1816 ogg_demuxer_select="golomb"
1817 psp_muxer_select="mov_muxer"
1818 rtp_demuxer_select="sdp_demuxer"
1819 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1820 rtsp_demuxer_select="http_protocol rtpdec"
1821 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1822 sap_demuxer_select="sdp_demuxer"
1823 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1824 sdp_demuxer_select="rtpdec"
1825 smoothstreaming_muxer_select="ismv_muxer"
1826 spdif_muxer_select="aac_parser"
1827 tak_demuxer_select="tak_parser"
1828 tg2_muxer_select="mov_muxer"
1829 tgp_muxer_select="mov_muxer"
1830 w64_demuxer_deps="wav_demuxer"
1831 wav_muxer_select="riffenc"
1832 webm_muxer_select="riffenc"
1833
1834 # indevs / outdevs
1835 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1836 alsa_outdev_deps="alsa_asoundlib_h"
1837 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1838 dv1394_indev_deps="dv1394 dv_demuxer"
1839 fbdev_indev_deps="linux_fb_h"
1840 jack_indev_deps="jack_jack_h pthreads"
1841 libcdio_indev_deps="libcdio"
1842 libdc1394_indev_deps="libdc1394"
1843 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1844 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1845 pulse_indev_deps="libpulse"
1846 sndio_indev_deps="sndio_h"
1847 sndio_outdev_deps="sndio_h"
1848 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1849 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1850 vfwcap_indev_extralibs="-lavicap32"
1851 x11grab_indev_deps="x11grab XShmCreateImage"
1852
1853 # protocols
1854 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1855 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1856 ffrtmpcrypt_protocol_select="tcp_protocol"
1857 ffrtmphttp_protocol_deps="!librtmp_protocol"
1858 ffrtmphttp_protocol_select="http_protocol"
1859 gopher_protocol_select="network"
1860 httpproxy_protocol_select="tcp_protocol"
1861 http_protocol_select="tcp_protocol"
1862 https_protocol_select="tls_protocol"
1863 librtmp_protocol_deps="librtmp"
1864 librtmpe_protocol_deps="librtmp"
1865 librtmps_protocol_deps="librtmp"
1866 librtmpt_protocol_deps="librtmp"
1867 librtmpte_protocol_deps="librtmp"
1868 mmsh_protocol_select="http_protocol"
1869 mmst_protocol_select="network"
1870 rtmp_protocol_deps="!librtmp_protocol"
1871 rtmp_protocol_select="tcp_protocol"
1872 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1873 rtmps_protocol_deps="!librtmp_protocol"
1874 rtmps_protocol_select="tls_protocol"
1875 rtmpt_protocol_select="ffrtmphttp_protocol"
1876 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1877 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1878 rtp_protocol_select="udp_protocol"
1879 sctp_protocol_deps="struct_sctp_event_subscribe"
1880 sctp_protocol_select="network"
1881 srtp_protocol_select="rtp_protocol"
1882 tcp_protocol_select="network"
1883 tls_protocol_deps_any="openssl gnutls"
1884 tls_protocol_select="tcp_protocol"
1885 udp_protocol_select="network"
1886 unix_protocol_deps="sys_un_h"
1887 unix_protocol_select="network"
1888
1889 # filters
1890 blackframe_filter_deps="gpl"
1891 boxblur_filter_deps="gpl"
1892 cropdetect_filter_deps="gpl"
1893 delogo_filter_deps="gpl"
1894 drawtext_filter_deps="libfreetype"
1895 frei0r_filter_deps="frei0r dlopen strtok_r"
1896 frei0r_filter_extralibs='$ldl'
1897 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1898 frei0r_src_filter_extralibs='$ldl'
1899 hqdn3d_filter_deps="gpl"
1900 interlace_filter_deps="gpl"
1901 resample_filter_deps="avresample"
1902 ocv_filter_deps="libopencv"
1903 scale_filter_deps="swscale"
1904 yadif_filter_deps="gpl"
1905
1906 # libraries
1907 avcodec_deps="avutil"
1908 avdevice_deps="avutil avcodec avformat"
1909 avfilter_deps="avutil"
1910 avformat_deps="avutil avcodec"
1911 avresample_deps="avutil"
1912 swscale_deps="avutil"
1913
1914 # programs
1915 avconv_deps="avcodec avfilter avformat avresample swscale"
1916 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
1917                fps_filter null_filter resample_filter scale_filter
1918                setpts_filter trim_filter"
1919 avplay_deps="avcodec avformat avresample swscale sdl"
1920 avplay_select="rdft"
1921 avprobe_deps="avcodec avformat"
1922 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1923 avserver_extralibs='$ldl'
1924
1925 doc_deps="texi2html"
1926
1927 # default parameters
1928
1929 logfile="config.log"
1930
1931 # installation paths
1932 prefix_default="/usr/local"
1933 bindir_default='${prefix}/bin'
1934 datadir_default='${prefix}/share/avconv'
1935 incdir_default='${prefix}/include'
1936 libdir_default='${prefix}/lib'
1937 mandir_default='${prefix}/share/man'
1938 shlibdir_default="$libdir_default"
1939
1940 # toolchain
1941 ar_default="ar"
1942 cc_default="gcc"
1943 host_cc_default="gcc"
1944 cp_f="cp -f"
1945 ln_s="ln -s -f"
1946 nm_default="nm -g"
1947 objformat="elf"
1948 pkg_config_default=pkg-config
1949 ranlib="ranlib"
1950 yasmexe="yasm"
1951
1952 nogas=":"
1953
1954 # machine
1955 arch_default=$(uname -m)
1956 cpu="generic"
1957
1958 # OS
1959 target_os_default=$(tolower $(uname -s))
1960 host_os=$target_os_default
1961
1962 # configurable options
1963 enable $LIBRARY_LIST $PROGRAM_LIST
1964
1965 enable asm
1966 enable debug
1967 enable doc
1968 enable optimizations
1969 enable safe_bitstream_reader
1970 enable static
1971 enable swscale_alpha
1972
1973 # By default, enable only those hwaccels that have no external dependencies.
1974 enable dxva2 vdpau
1975
1976 # build settings
1977 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1978 LIBPREF="lib"
1979 LIBSUF=".a"
1980 FULLNAME='$(NAME)$(BUILDSUF)'
1981 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1982 SLIBPREF="lib"
1983 SLIBSUF=".so"
1984 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1985 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1986 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1987 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1988 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1989 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1990
1991 asflags_filter=echo
1992 cflags_filter=echo
1993 ldflags_filter=echo
1994
1995 AS_C='-c'
1996 AS_O='-o $@'
1997 CC_C='-c'
1998 CC_E='-E -o $@'
1999 CC_O='-o $@'
2000 LD_O='-o $@'
2001 LD_LIB='-l%'
2002 LD_PATH='-L'
2003 HOSTCC_C='-c'
2004 HOSTCC_O='-o $@'
2005 HOSTLD_O='-o $@'
2006
2007 host_cflags='-O3 -g'
2008 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2009 host_libs='-lm'
2010 host_cflags_filter=echo
2011 host_ldflags_filter=echo
2012
2013 target_path='$(CURDIR)'
2014
2015 # since the object filename is not given with the -MM flag, the compiler
2016 # is only able to print the basename, and we must add the path ourselves
2017 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2018 DEPFLAGS='-MM'
2019
2020 # find source path
2021 if test -f configure; then
2022     source_path=.
2023 else
2024     source_path=$(cd $(dirname "$0"); pwd)
2025     echo "$source_path" | grep -q '[[:blank:]]' &&
2026         die "Out of tree builds are impossible with whitespace in source path."
2027     test -e "$source_path/config.h" &&
2028         die "Out of tree builds are impossible with config.h in source dir."
2029 fi
2030
2031 for v in "$@"; do
2032     r=${v#*=}
2033     l=${v%"$r"}
2034     r=$(sh_quote "$r")
2035     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2036 done
2037
2038 find_things(){
2039     thing=$1
2040     pattern=$2
2041     file=$source_path/$3
2042     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2043 }
2044
2045 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2046 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2047 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2048 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2049 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2050 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2051 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2052 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2053 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2054 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2055 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2056
2057 ALL_COMPONENTS="
2058     $BSF_LIST
2059     $DECODER_LIST
2060     $DEMUXER_LIST
2061     $ENCODER_LIST
2062     $FILTER_LIST
2063     $HWACCEL_LIST
2064     $INDEV_LIST
2065     $MUXER_LIST
2066     $OUTDEV_LIST
2067     $PARSER_LIST
2068     $PROTOCOL_LIST
2069 "
2070
2071 for n in $COMPONENT_LIST; do
2072     v=$(toupper ${n%s})_LIST
2073     eval enable \$$v
2074     eval ${n}_if_any="\$$v"
2075 done
2076
2077 enable $ARCH_EXT_LIST
2078
2079 die_unknown(){
2080     echo "Unknown option \"$1\"."
2081     echo "See $0 --help for available options."
2082     exit 1
2083 }
2084
2085 print_3_columns() {
2086     cat | tr ' ' '\n' | sort | pr -r -3 -t
2087 }
2088
2089 show_list() {
2090     suffix=_$1
2091     shift
2092     echo $* | sed s/$suffix//g | print_3_columns
2093     exit 0
2094 }
2095
2096 rand_list(){
2097     IFS=', '
2098     set -- $*
2099     unset IFS
2100     for thing; do
2101         comp=${thing%:*}
2102         prob=${thing#$comp}
2103         prob=${prob#:}
2104         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2105         echo "prob ${prob:-0.5}"
2106         printf '%s\n' $comp
2107     done
2108 }
2109
2110 do_random(){
2111     action=$1
2112     shift
2113     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2114     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2115 }
2116
2117 for opt do
2118     optval="${opt#*=}"
2119     case "$opt" in
2120         --extra-ldflags=*)
2121             add_ldflags $optval
2122         ;;
2123         --extra-libs=*)
2124             add_extralibs $optval
2125         ;;
2126         --disable-devices)
2127             disable $INDEV_LIST $OUTDEV_LIST
2128         ;;
2129         --enable-debug=*)
2130             debuglevel="$optval"
2131         ;;
2132         --disable-programs)
2133             disable $PROGRAM_LIST
2134         ;;
2135         --disable-everything)
2136             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2137         ;;
2138         --disable-all)
2139             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2140             disable $LIBRARY_LIST $PROGRAM_LIST doc
2141         ;;
2142         --enable-random|--disable-random)
2143             action=${opt%%-random}
2144             do_random ${action#--} $COMPONENT_LIST
2145         ;;
2146         --enable-random=*|--disable-random=*)
2147             action=${opt%%-random=*}
2148             do_random ${action#--} $optval
2149         ;;
2150         --enable-*=*|--disable-*=*)
2151             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2152             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2153             eval list=\$$(toupper $thing)_LIST
2154             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2155             $action $(filter "$name" $list)
2156         ;;
2157         --enable-?*|--disable-?*)
2158             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2159             if is_in $option $COMPONENT_LIST; then
2160                 test $action = disable && action=unset
2161                 eval $action \$$(toupper ${option%s})_LIST
2162             elif is_in $option $CMDLINE_SELECT; then
2163                 $action $option
2164             else
2165                 die_unknown $opt
2166             fi
2167         ;;
2168         --list-*)
2169             NAME="${opt#--list-}"
2170             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2171             NAME=${NAME%s}
2172             eval show_list $NAME \$$(toupper $NAME)_LIST
2173         ;;
2174         --help|-h) show_help
2175         ;;
2176         *)
2177             optname="${opt%%=*}"
2178             optname="${optname#--}"
2179             optname=$(echo "$optname" | sed 's/-/_/g')
2180             if is_in $optname $CMDLINE_SET; then
2181                 eval $optname='$optval'
2182             elif is_in $optname $CMDLINE_APPEND; then
2183                 append $optname "$optval"
2184             else
2185                 die_unknown $opt
2186             fi
2187         ;;
2188     esac
2189 done
2190
2191 disabled logging && logfile=/dev/null
2192
2193 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2194 set >> $logfile
2195
2196 test -n "$cross_prefix" && enable cross_compile
2197
2198 if enabled cross_compile; then
2199     test -n "$arch" && test -n "$target_os" ||
2200         die "Must specify target arch and OS when cross-compiling"
2201 fi
2202
2203 ar_default="${cross_prefix}${ar_default}"
2204 cc_default="${cross_prefix}${cc_default}"
2205 nm_default="${cross_prefix}${nm_default}"
2206 pkg_config_default="${cross_prefix}${pkg_config_default}"
2207 ranlib="${cross_prefix}${ranlib}"
2208
2209 sysinclude_default="${sysroot}/usr/include"
2210
2211 case "$toolchain" in
2212     clang-asan)
2213         cc_default="clang"
2214         add_cflags  -fsanitize=address
2215         add_ldflags -fsanitize=address
2216     ;;
2217     clang-tsan)
2218         cc_default="clang"
2219         add_cflags  -fsanitize=thread -pie
2220         add_ldflags -fsanitize=thread -pie
2221     ;;
2222     gcc-asan)
2223         cc_default="gcc"
2224         add_cflags  -fsanitize=address
2225         add_ldflags -fsanitize=address
2226     ;;
2227     gcc-tsan)
2228         cc_default="gcc"
2229         add_cflags  -fsanitize=thread -pie -fPIC
2230         add_ldflags -fsanitize=thread -pie -fPIC
2231     ;;
2232     valgrind-massif)
2233         target_exec_default="valgrind"
2234         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2235     ;;
2236     valgrind-memcheck)
2237         target_exec_default="valgrind"
2238         target_exec_args="--track-origins=yes --leak-check=full"
2239     ;;
2240     msvc)
2241         cc_default="c99wrap cl"
2242         ld_default="c99wrap link"
2243         nm_default="dumpbin -symbols"
2244         ar_default="lib"
2245         target_os_default="win32"
2246     ;;
2247     icl)
2248         cc_default="c99wrap -noconv icl"
2249         ld_default="c99wrap xilink"
2250         nm_default="dumpbin -symbols"
2251         ar_default="xilib"
2252         target_os_default="win32"
2253     ;;
2254     gcov)
2255         add_cflags  -fprofile-arcs -ftest-coverage
2256         add_ldflags -fprofile-arcs -ftest-coverage
2257     ;;
2258     ?*)
2259         die "Unknown toolchain $toolchain"
2260     ;;
2261 esac
2262
2263 set_default arch cc pkg_config sysinclude target_exec target_os
2264 enabled cross_compile || host_cc_default=$cc
2265 set_default host_cc
2266
2267 if ! $pkg_config --version >/dev/null 2>&1; then
2268     warn "$pkg_config not found, library detection may fail."
2269     pkg_config=false
2270 fi
2271
2272 exesuf() {
2273     case $1 in
2274         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2275     esac
2276 }
2277
2278 EXESUF=$(exesuf $target_os)
2279 HOSTEXESUF=$(exesuf $host_os)
2280
2281 # set temporary file name
2282 : ${TMPDIR:=$TEMPDIR}
2283 : ${TMPDIR:=$TMP}
2284 : ${TMPDIR:=/tmp}
2285
2286 if ! check_cmd mktemp -u XXXXXX; then
2287     # simple replacement for missing mktemp
2288     # NOT SAFE FOR GENERAL USE
2289     mktemp(){
2290         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2291     }
2292 fi
2293
2294 tmpfile(){
2295     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2296         (set -C; exec > $tmp) 2>/dev/null ||
2297         die "Unable to create temporary file in $TMPDIR."
2298     append TMPFILES $tmp
2299     eval $1=$tmp
2300 }
2301
2302 trap 'rm -f -- $TMPFILES' EXIT
2303
2304 tmpfile TMPASM .asm
2305 tmpfile TMPC   .c
2306 tmpfile TMPE   $EXESUF
2307 tmpfile TMPH   .h
2308 tmpfile TMPO   .o
2309 tmpfile TMPS   .S
2310 tmpfile TMPSH  .sh
2311 tmpfile TMPV   .ver
2312
2313 unset -f mktemp
2314
2315 chmod +x $TMPE
2316
2317 # make sure we can execute files in $TMPDIR
2318 cat > $TMPSH 2>> $logfile <<EOF
2319 #! /bin/sh
2320 EOF
2321 chmod +x $TMPSH >> $logfile 2>&1
2322 if ! $TMPSH >> $logfile 2>&1; then
2323     cat <<EOF
2324 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2325 variable to another directory and make sure that it is not mounted noexec.
2326 EOF
2327     die "Sanity test failed."
2328 fi
2329
2330 ccc_flags(){
2331     for flag; do
2332         case $flag in
2333             -std=c99)           echo -c99                       ;;
2334             -mcpu=*)            echo -arch ${flag#*=}           ;;
2335             -mieee)             echo -ieee                      ;;
2336             -O*|-fast)          echo $flag                      ;;
2337             -fno-math-errno)    echo -assume nomath_errno       ;;
2338             -g)                 echo -g3                        ;;
2339             -Wall)              echo -msg_enable level2         ;;
2340             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2341             -Wl,*)              echo $flag                      ;;
2342             -f*|-W*)                                            ;;
2343             *)                  echo $flag                      ;;
2344         esac
2345    done
2346 }
2347
2348 msvc_common_flags(){
2349     for flag; do
2350         case $flag in
2351             # In addition to specifying certain flags under the compiler
2352             # specific filters, they must be specified here as well or else the
2353             # generic catch all at the bottom will print the original flag.
2354             -Wall)                ;;
2355             -std=c99)             ;;
2356             # Common flags
2357             -fomit-frame-pointer) ;;
2358             -g)                   echo -Z7 ;;
2359             -fno-math-errno)      ;;
2360             -fno-common)          ;;
2361             -fno-signed-zeros)    ;;
2362             -fPIC)                ;;
2363             -mthumb)              ;;
2364             -march=*)             ;;
2365             -lz)                  echo zlib.lib ;;
2366             -lavifil32)           echo vfw32.lib ;;
2367             -lavicap32)           echo vfw32.lib user32.lib ;;
2368             -l*)                  echo ${flag#-l}.lib ;;
2369             *)                    echo $flag ;;
2370         esac
2371     done
2372 }
2373
2374 msvc_flags(){
2375     msvc_common_flags "$@"
2376     for flag; do
2377         case $flag in
2378             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2379                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2380                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2381                                        -wd4996 -wd4273 ;;
2382         esac
2383     done
2384 }
2385
2386 icl_flags(){
2387     msvc_common_flags "$@"
2388     for flag; do
2389         case $flag in
2390             # Despite what Intel's documentation says -Wall, which is supported
2391             # on Windows, does enable remarks so disable them here.
2392             -Wall)                echo $flag -Qdiag-disable:remark ;;
2393             -std=c99)             echo -Qstd=c99 ;;
2394         esac
2395     done
2396 }
2397
2398 pgi_flags(){
2399     for flag; do
2400         case $flag in
2401             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2402             -fomit-frame-pointer) echo -Mnoframe ;;
2403             -g)                   echo -gopt ;;
2404             *)                    echo $flag ;;
2405         esac
2406     done
2407 }
2408
2409 suncc_flags(){
2410     for flag; do
2411         case $flag in
2412             -march=*|-mcpu=*)
2413                 case "${flag#*=}" in
2414                     native)                   echo -xtarget=native       ;;
2415                     v9|niagara)               echo -xarch=sparc          ;;
2416                     ultrasparc)               echo -xarch=sparcvis       ;;
2417                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2418                     i586|pentium)             echo -xchip=pentium        ;;
2419                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2420                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2421                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2422                     pentium4*)          echo -xtarget=pentium4           ;;
2423                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2424                     *-sse3)             echo -xarch=sse3                 ;;
2425                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2426                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2427                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2428                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2429                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2430                     k8|opteron|athlon64|athlon-fx)
2431                                                echo -xarch=sse2a         ;;
2432                     athlon*)                   echo -xarch=pentium_proa  ;;
2433                 esac
2434                 ;;
2435             -std=c99)             echo -xc99              ;;
2436             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2437             -fPIC)                echo -KPIC -xcode=pic32 ;;
2438             -W*,*)                echo $flag              ;;
2439             -f*-*|-W*|-mimpure-text)                      ;;
2440             -shared)              echo -G                 ;;
2441             *)                    echo $flag              ;;
2442         esac
2443     done
2444 }
2445
2446 tms470_flags(){
2447     for flag; do
2448         case $flag in
2449             -march=*|-mcpu=*)
2450                 case "${flag#*=}" in
2451                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2452                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2453                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2454                     armv6*|arm11*)          echo -mv=6   ;;
2455                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2456                                             echo -mv=5e  ;;
2457                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2458                 esac
2459                 ;;
2460             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2461             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2462             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2463             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2464             -msoft-float)   echo --float_support=vfplib       ;;
2465             -O[0-3]|-mf=*)  echo $flag                        ;;
2466             -g)             echo -g -mn                       ;;
2467             -pds=*)         echo $flag                        ;;
2468             -D*|-I*)        echo $flag                        ;;
2469             --gcc|--abi=*)  echo $flag                        ;;
2470             -me)            echo $flag                        ;;
2471         esac
2472     done
2473 }
2474
2475 probe_cc(){
2476     pfx=$1
2477     _cc=$2
2478
2479     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2480     unset _ld_o _ldflags _ld_lib _ld_path
2481     unset _depflags _DEPCMD _DEPFLAGS
2482     _flags_filter=echo
2483
2484     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2485         _type=llvm_gcc
2486         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2487         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2488         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2489         _cflags_speed='-O3'
2490         _cflags_size='-Os'
2491     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2492         _type=gcc
2493         gcc_version=$($_cc --version | head -n1)
2494         gcc_basever=$($_cc -dumpversion)
2495         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2496         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2497         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2498         if ! $_cc -dumpversion | grep -q '^2\.'; then
2499             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2500         fi
2501         _cflags_speed='-O3'
2502         _cflags_size='-Os'
2503     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2504         _type=icc
2505         _ident=$($_cc --version | head -n1)
2506         _depflags='-MMD'
2507         _cflags_speed='-O3'
2508         _cflags_size='-Os'
2509         _cflags_noopt='-O1'
2510     elif $_cc -v 2>&1 | grep -q xlc; then
2511         _type=xlc
2512         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2513         _cflags_speed='-O5'
2514         _cflags_size='-O5 -qcompact'
2515     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2516         _type=ccc
2517         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2518         _DEPFLAGS='-M'
2519         _cflags_speed='-fast'
2520         _cflags_size='-O1'
2521         _flags_filter=ccc_flags
2522     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2523         test -d "$sysroot" || die "No valid sysroot specified."
2524         _type=armcc
2525         _ident=$($_cc --vsn | head -n1)
2526         armcc_conf="$PWD/armcc.conf"
2527         $_cc --arm_linux_configure                 \
2528              --arm_linux_config_file="$armcc_conf" \
2529              --configure_sysroot="$sysroot"        \
2530              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2531              die "Error creating armcc configuration file."
2532         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2533         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2534         as_default="${cross_prefix}gcc"
2535         _depflags='-MMD'
2536         _cflags_speed='-O3'
2537         _cflags_size='-Os'
2538     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2539         _type=tms470
2540         _ident=$($_cc -version | head -n1 | tr -s ' ')
2541         _flags='--gcc --abi=eabi -me'
2542         _cc_e='-ppl -fe=$@'
2543         _cc_o='-fe=$@'
2544         _depflags='-ppa -ppd=$(@:.o=.d)'
2545         _cflags_speed='-O3 -mf=5'
2546         _cflags_size='-O3 -mf=2'
2547         _flags_filter=tms470_flags
2548     elif $_cc -v 2>&1 | grep -q clang; then
2549         _type=clang
2550         _ident=$($_cc --version | head -n1)
2551         _depflags='-MMD'
2552         _cflags_speed='-O3'
2553         _cflags_size='-Os'
2554     elif $_cc -V 2>&1 | grep -q Sun; then
2555         _type=suncc
2556         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2557         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2558         _DEPFLAGS='-xM1 -xc99'
2559         _ldflags='-std=c99'
2560         _cflags_speed='-O5'
2561         _cflags_size='-O5 -xspace'
2562         _flags_filter=suncc_flags
2563     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2564         _type=pathscale
2565         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2566         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2567         _cflags_speed='-O2'
2568         _cflags_size='-Os'
2569         _flags_filter='filter_out -Wdisabled-optimization'
2570     elif $_cc -v 2>&1 | grep -q Open64; then
2571         _type=open64
2572         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2573         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2574         _cflags_speed='-O2'
2575         _cflags_size='-Os'
2576         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2577     elif $_cc -V 2>&1 | grep -q Portland; then
2578         _type=pgi
2579         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2580         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2581         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2582         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2583         _cflags_noopt="-O1"
2584         _flags_filter=pgi_flags
2585     elif $_cc 2>&1 | grep -q Microsoft; then
2586         _type=msvc
2587         _ident=$($cc 2>&1 | head -n1)
2588         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2589         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2590         _cflags_speed="-O2"
2591         _cflags_size="-O1"
2592         # Nonstandard output options, to avoid msys path conversion issues.
2593         # Relies on wrapper to remap it.
2594         if $_cc 2>&1 | grep -q Linker; then
2595             _ld_o='-out $@'
2596         else
2597             _ld_o='-Fe$@'
2598         fi
2599         _cc_o='-Fo $@'
2600         _cc_e='-P -Fi $@'
2601         _flags_filter=msvc_flags
2602         _ld_lib='lib%.a'
2603         _ld_path='-libpath:'
2604         _flags='-nologo'
2605         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2606         if [ $pfx = hostcc ]; then
2607             append _cflags -Dsnprintf=_snprintf
2608         fi
2609     elif $_cc 2>&1 | grep -q Intel; then
2610         _type=icl
2611         _ident=$($cc 2>&1 | head -n1)
2612         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2613         # Not only is O3 broken on 13.x+ but it is slower on all previous
2614         # versions (tested) as well.
2615         _cflags_speed="-O2"
2616         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2617         # Nonstandard output options, to avoid msys path conversion issues.
2618         # Relies on wrapper to remap it.
2619         if $_cc 2>&1 | grep -q Linker; then
2620             _ld_o='-out $@'
2621         else
2622             _ld_o='-Fe$@'
2623         fi
2624         _cc_o='-Fo $@'
2625         _cc_e='-P'
2626         _flags_filter=icl_flags
2627         _ld_lib='lib%.a'
2628         _ld_path='-libpath:'
2629         # -Qdiag-error to make icl error when seeing certain unknown arguments
2630         _flags='-nologo -Qdiag-error:4044,10157'
2631         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2632         # with MSVC which enables it by default.
2633         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2634         if [ $pfx = hostcc ]; then
2635             append _cflags -Dsnprintf=_snprintf
2636         fi
2637     fi
2638
2639     eval ${pfx}_type=\$_type
2640     eval ${pfx}_ident=\$_ident
2641 }
2642
2643 set_ccvars(){
2644     eval ${1}_C=\${_cc_c-\${${1}_C}}
2645     eval ${1}_E=\${_cc_e-\${${1}_E}}
2646     eval ${1}_O=\${_cc_o-\${${1}_O}}
2647
2648     if [ -n "$_depflags" ]; then
2649         eval ${1}_DEPFLAGS=\$_depflags
2650     else
2651         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2652         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2653         eval DEP${1}FLAGS=\$_flags
2654     fi
2655 }
2656
2657 probe_cc cc "$cc"
2658 cflags_filter=$_flags_filter
2659 cflags_speed=$_cflags_speed
2660 cflags_size=$_cflags_size
2661 cflags_noopt=$_cflags_noopt
2662 add_cflags $_flags $_cflags
2663 cc_ldflags=$_ldflags
2664 set_ccvars CC
2665
2666 probe_cc hostcc "$host_cc"
2667 host_cflags_filter=$_flags_filter
2668 add_host_cflags  $_flags $_cflags
2669 set_ccvars HOSTCC
2670
2671 test -n "$cc_type" && enable $cc_type ||
2672     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2673
2674 : ${as_default:=$cc}
2675 : ${dep_cc_default:=$cc}
2676 : ${ld_default:=$cc}
2677 : ${host_ld_default:=$host_cc}
2678 set_default ar as dep_cc ld host_ld
2679
2680 probe_cc as "$as"
2681 asflags_filter=$_flags_filter
2682 add_asflags $_flags $_cflags
2683 set_ccvars AS
2684
2685 probe_cc ld "$ld"
2686 ldflags_filter=$_flags_filter
2687 add_ldflags $_flags $_ldflags
2688 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2689 LD_O=${_ld_o-$LD_O}
2690 LD_LIB=${_ld_lib-$LD_LIB}
2691 LD_PATH=${_ld_path-$LD_PATH}
2692
2693 probe_cc hostld "$host_ld"
2694 host_ldflags_filter=$_flags_filter
2695 add_host_ldflags $_flags $_ldflags
2696 HOSTLD_O=${_ld_o-$HOSTLD_O}
2697
2698 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2699     probe_cc depcc "$dep_cc"
2700     CCDEP=${_DEPCMD:-$DEPCMD}
2701     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2702     DEPCCFLAGS=$_flags
2703 fi
2704
2705 if $ar 2>&1 | grep -q Microsoft; then
2706     arflags="-nologo"
2707     ar_o='-out:$@'
2708 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2709     arflags="rq"
2710     ar_o='$@'
2711 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2712     arflags='-Xany -r -c'
2713     ar_o='$@'
2714 else
2715     arflags="rc"
2716     ar_o='$@'
2717 fi
2718
2719 add_cflags $extra_cflags
2720 add_asflags $extra_cflags
2721
2722 if test -n "$sysroot"; then
2723     case "$cc_type" in
2724         gcc|llvm_gcc|clang)
2725             add_cppflags --sysroot="$sysroot"
2726             add_ldflags --sysroot="$sysroot"
2727         ;;
2728         tms470)
2729             add_cppflags -I"$sysinclude"
2730             add_ldflags  --sysroot="$sysroot"
2731         ;;
2732     esac
2733 fi
2734
2735 if test "$cpu" = host; then
2736     enabled cross_compile &&
2737         die "--cpu=host makes no sense when cross-compiling."
2738
2739     case "$cc_type" in
2740         gcc|llvm_gcc)
2741             check_native(){
2742                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2743                 sed -n "/cc1.*$1=/{
2744                             s/.*$1=\\([^ ]*\\).*/\\1/
2745                             p
2746                             q
2747                         }" $TMPE
2748             }
2749             cpu=$(check_native -march || check_native -mcpu)
2750         ;;
2751     esac
2752
2753     test "${cpu:-host}" = host &&
2754         die "--cpu=host not supported with compiler $cc"
2755 fi
2756
2757 # Deal with common $arch aliases
2758 case "$arch" in
2759     aarch64|arm64)
2760         arch="aarch64"
2761     ;;
2762     arm*)
2763         arch="arm"
2764     ;;
2765     mips*|IP*)
2766         arch="mips"
2767     ;;
2768     parisc*|hppa*)
2769         arch="parisc"
2770     ;;
2771     "Power Macintosh"|ppc*|powerpc*)
2772         arch="ppc"
2773     ;;
2774     s390|s390x)
2775         arch="s390"
2776     ;;
2777     sh4|sh)
2778         arch="sh4"
2779     ;;
2780     sun4u|sparc*)
2781         arch="sparc"
2782     ;;
2783     tilegx|tile-gx)
2784         arch="tilegx"
2785     ;;
2786     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2787         arch="x86"
2788     ;;
2789 esac
2790
2791 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2792 enable $arch
2793
2794 # Add processor-specific flags
2795 if enabled aarch64; then
2796
2797     case $cpu in
2798         armv*)
2799             cpuflags="-march=$cpu"
2800         ;;
2801         *)
2802             cpuflags="-mcpu=$cpu"
2803         ;;
2804     esac
2805
2806 elif enabled alpha; then
2807
2808     cpuflags="-mcpu=$cpu"
2809
2810 elif enabled arm; then
2811
2812     check_arm_arch() {
2813         check_cpp_condition stddef.h \
2814             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2815             $cpuflags
2816     }
2817
2818     probe_arm_arch() {
2819         if   check_arm_arch 4;        then echo armv4;
2820         elif check_arm_arch 4T;       then echo armv4t;
2821         elif check_arm_arch 5;        then echo armv5;
2822         elif check_arm_arch 5E;       then echo armv5e;
2823         elif check_arm_arch 5T;       then echo armv5t;
2824         elif check_arm_arch 5TE;      then echo armv5te;
2825         elif check_arm_arch 5TEJ;     then echo armv5te;
2826         elif check_arm_arch 6;        then echo armv6;
2827         elif check_arm_arch 6J;       then echo armv6j;
2828         elif check_arm_arch 6K;       then echo armv6k;
2829         elif check_arm_arch 6Z;       then echo armv6z;
2830         elif check_arm_arch 6ZK;      then echo armv6zk;
2831         elif check_arm_arch 6T2;      then echo armv6t2;
2832         elif check_arm_arch 7;        then echo armv7;
2833         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2834         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2835         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2836         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2837         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2838         fi
2839     }
2840
2841     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2842
2843     case $cpu in
2844         armv*)
2845             cpuflags="-march=$cpu"
2846             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2847         ;;
2848         *)
2849             cpuflags="-mcpu=$cpu"
2850             case $cpu in
2851                 cortex-a*)                               subarch=armv7a  ;;
2852                 cortex-r*)                               subarch=armv7r  ;;
2853                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2854                 arm11*)                                  subarch=armv6   ;;
2855                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2856                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2857                 *)                             subarch=$(probe_arm_arch) ;;
2858             esac
2859         ;;
2860     esac
2861
2862     case "$subarch" in
2863         armv5t*)    enable fast_clz                ;;
2864         armv[6-8]*) enable fast_clz fast_unaligned ;;
2865     esac
2866
2867 elif enabled avr32; then
2868
2869     case $cpu in
2870         ap7[02]0[0-2])
2871             subarch="avr32_ap"
2872             cpuflags="-mpart=$cpu"
2873         ;;
2874         ap)
2875             subarch="avr32_ap"
2876             cpuflags="-march=$cpu"
2877         ;;
2878         uc3[ab]*)
2879             subarch="avr32_uc"
2880             cpuflags="-mcpu=$cpu"
2881         ;;
2882         uc)
2883             subarch="avr32_uc"
2884             cpuflags="-march=$cpu"
2885         ;;
2886     esac
2887
2888 elif enabled bfin; then
2889
2890     cpuflags="-mcpu=$cpu"
2891
2892 elif enabled mips; then
2893
2894     cpuflags="-march=$cpu"
2895
2896 elif enabled ppc; then
2897
2898     case $(tolower $cpu) in
2899         601|ppc601|powerpc601)
2900             cpuflags="-mcpu=601"
2901             disable altivec
2902         ;;
2903         603*|ppc603*|powerpc603*)
2904             cpuflags="-mcpu=603"
2905             disable altivec
2906         ;;
2907         604*|ppc604*|powerpc604*)
2908             cpuflags="-mcpu=604"
2909             disable altivec
2910         ;;
2911         g3|75*|ppc75*|powerpc75*)
2912             cpuflags="-mcpu=750"
2913             disable altivec
2914         ;;
2915         g4|745*|ppc745*|powerpc745*)
2916             cpuflags="-mcpu=7450"
2917         ;;
2918         74*|ppc74*|powerpc74*)
2919             cpuflags="-mcpu=7400"
2920         ;;
2921         g5|970|ppc970|powerpc970)
2922             cpuflags="-mcpu=970"
2923         ;;
2924         power[3-7]*)
2925             cpuflags="-mcpu=$cpu"
2926         ;;
2927         cell)
2928             cpuflags="-mcpu=cell"
2929             enable ldbrx
2930         ;;
2931         e500mc)
2932             cpuflags="-mcpu=e500mc"
2933             disable altivec
2934         ;;
2935         e500v2)
2936             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2937             disable altivec
2938         ;;
2939         e500)
2940             cpuflags="-mcpu=8540 -mhard-float"
2941             disable altivec
2942         ;;
2943     esac
2944
2945 elif enabled sparc; then
2946
2947     case $cpu in
2948         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2949             cpuflags="-mcpu=$cpu"
2950             disable vis
2951         ;;
2952         ultrasparc*|niagara[234])
2953             cpuflags="-mcpu=$cpu"
2954         ;;
2955     esac
2956
2957 elif enabled x86; then
2958
2959     case $cpu in
2960         i[345]86|pentium)
2961             cpuflags="-march=$cpu"
2962             disable mmx
2963         ;;
2964         # targets that do NOT support nopl and conditional mov (cmov)
2965         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2966             cpuflags="-march=$cpu"
2967             disable i686
2968         ;;
2969         # targets that do support nopl and conditional mov (cmov)
2970         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2971             cpuflags="-march=$cpu"
2972             enable i686
2973             enable fast_cmov
2974         ;;
2975         # targets that do support conditional mov but on which it's slow
2976         pentium4|pentium4m|prescott|nocona)
2977             cpuflags="-march=$cpu"
2978             enable i686
2979             disable fast_cmov
2980         ;;
2981     esac
2982
2983 fi
2984
2985 if [ "$cpu" != generic ]; then
2986     add_cflags  $cpuflags
2987     add_asflags $cpuflags
2988 fi
2989
2990 # compiler sanity check
2991 check_exec <<EOF
2992 int main(void){ return 0; }
2993 EOF
2994 if test "$?" != 0; then
2995     echo "$cc is unable to create an executable file."
2996     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2997         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2998         echo "Only do this if you know what cross compiling means."
2999     fi
3000     die "C compiler test failed."
3001 fi
3002
3003 add_cppflags -D_ISOC99_SOURCE
3004 check_cflags -std=c99
3005 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3006 #include <stdlib.h>
3007 EOF
3008 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3009 #include <stdlib.h>
3010 EOF
3011
3012 check_host_cflags -std=c99
3013 check_host_cflags -Wall
3014
3015 check_64bit(){
3016     arch32=$1
3017     arch64=$2
3018     expr=$3
3019     check_code cc "" "int test[2*($expr) - 1]" &&
3020         subarch=$arch64 || subarch=$arch32
3021 }
3022
3023 case "$arch" in
3024     aarch64|alpha|ia64)
3025         spic=$shared
3026     ;;
3027     mips)
3028         check_64bit mips mips64 '_MIPS_SIM > 1'
3029         spic=$shared
3030     ;;
3031     parisc)
3032         check_64bit parisc parisc64 'sizeof(void *) > 4'
3033         spic=$shared
3034     ;;
3035     ppc)
3036         check_64bit ppc ppc64 'sizeof(void *) > 4'
3037         spic=$shared
3038     ;;
3039     sparc)
3040         check_64bit sparc sparc64 'sizeof(void *) > 4'
3041         spic=$shared
3042     ;;
3043     x86)
3044         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3045         if test "$subarch" = "x86_64"; then
3046             spic=$shared
3047         fi
3048     ;;
3049 esac
3050
3051 enable $subarch
3052 enabled spic && enable_weak pic
3053
3054 # OS specific
3055 case $target_os in
3056     aix)
3057         SHFLAGS=-shared
3058         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3059         enabled shared && add_ldflags -Wl,-brtl
3060         ;;
3061     haiku)
3062         prefix_default="/boot/common"
3063         network_extralibs="-lnetwork"
3064         host_libs=
3065         ;;
3066     sunos)
3067         SHFLAGS='-shared -Wl,-h,$$(@F)'
3068         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3069         network_extralibs="-lsocket -lnsl"
3070         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3071         # When using suncc to build, the Solaris linker will mark
3072         # an executable with each instruction set encountered by
3073         # the Solaris assembler.  As our libraries contain their own
3074         # guards for processor-specific code, instead suppress
3075         # generation of the HWCAPS ELF section on Solaris x86 only.
3076         enabled_all suncc x86 &&
3077             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3078             add_ldflags -Wl,-M,mapfile
3079         nm_default='nm -P -g'
3080         ;;
3081     netbsd)
3082         disable symver
3083         oss_indev_extralibs="-lossaudio"
3084         oss_outdev_extralibs="-lossaudio"
3085         ;;
3086     openbsd|bitrig)
3087         disable symver
3088         SHFLAGS='-shared'
3089         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3090         SLIB_INSTALL_LINKS=
3091         oss_indev_extralibs="-lossaudio"
3092         oss_outdev_extralibs="-lossaudio"
3093         ;;
3094     dragonfly)
3095         disable symver
3096         ;;
3097     freebsd)
3098         ;;
3099     bsd/os)
3100         add_extralibs -lpoll -lgnugetopt
3101         ;;
3102     darwin)
3103         gas="gas-preprocessor.pl $cc"
3104         enabled ppc && add_asflags -force_cpusubtype_ALL
3105         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3106         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3107         add_ldflags -Wl,-dynamic,-search_paths_first
3108         SLIBSUF=".dylib"
3109         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3110         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3111         objformat="macho"
3112         enabled x86_64 && objformat="macho64"
3113         enabled_any pic shared ||
3114             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3115         ;;
3116     mingw32*)
3117         if test $target_os = "mingw32ce"; then
3118             disable network
3119         else
3120             target_os=mingw32
3121         fi
3122         LIBTARGET=i386
3123         if enabled x86_64; then
3124             LIBTARGET="i386:x86-64"
3125         elif enabled arm; then
3126             LIBTARGET=arm-wince
3127         fi
3128         check_ldflags -Wl,--nxcompat
3129         check_ldflags -Wl,--dynamicbase
3130         shlibdir_default="$bindir_default"
3131         SLIBPREF=""
3132         SLIBSUF=".dll"
3133         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3134         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3135         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3136         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3137         SLIB_INSTALL_LINKS=
3138         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3139         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3140         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3141         objformat="win32"
3142         dlltool="${cross_prefix}dlltool"
3143         ranlib=:
3144         enable dos_paths
3145         ;;
3146     win32|win64)
3147         if enabled shared; then
3148             # Link to the import library instead of the normal static library
3149             # for shared libs.
3150             LD_LIB='%.lib'
3151             # Cannot build shared and static libs at the same time with MSVC.
3152             disable static
3153         fi
3154         shlibdir_default="$bindir_default"
3155         SLIBPREF=""
3156         SLIBSUF=".dll"
3157         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3158         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3159         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3160         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3161         SLIB_INSTALL_LINKS=
3162         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3163         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3164         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3165         objformat="win32"
3166         ranlib=:
3167         enable dos_paths
3168         ;;
3169     cygwin*)
3170         target_os=cygwin
3171         shlibdir_default="$bindir_default"
3172         SLIBPREF="cyg"
3173         SLIBSUF=".dll"
3174         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3175         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3176         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3177         SLIB_INSTALL_LINKS=
3178         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3179         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3180         objformat="win32"
3181         enable dos_paths
3182         ;;
3183     *-dos|freedos|opendos)
3184         network_extralibs="-lsocket"
3185         objformat="coff"
3186         enable dos_paths
3187         add_cppflags -U__STRICT_ANSI__
3188         ;;
3189     linux)
3190         enable dv1394
3191         ;;
3192     irix*)
3193         target_os=irix
3194         ranlib="echo ignoring ranlib"
3195         ;;
3196     os/2*)
3197         ln_s="cp -f"
3198         objformat="aout"
3199         add_cppflags -D_GNU_SOURCE
3200         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3201         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3202         LIBSUF="_s.a"
3203         SLIBPREF=""
3204         SLIBSUF=".dll"
3205         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3206         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3207         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3208             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3209             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3210             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3211             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3212             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3213         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3214             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3215         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3216         enable dos_paths
3217         ;;
3218     gnu/kfreebsd)
3219         add_cppflags -D_BSD_SOURCE
3220         ;;
3221     gnu)
3222         ;;
3223     qnx)
3224         add_cppflags -D_QNX_SOURCE
3225         network_extralibs="-lsocket"
3226         ;;
3227     symbian)
3228         SLIBSUF=".dll"
3229         enable dos_paths
3230         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3231         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3232         add_ldflags -Wl,--target1-abs,--no-undefined \
3233                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3234                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3235         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3236                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3237                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3238         ;;
3239     osf1)
3240         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3241         ;;
3242     minix)
3243         ;;
3244     plan9)
3245         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3246                      -D_REENTRANT_SOURCE        \
3247                      -D_RESEARCH_SOURCE         \
3248                      -DFD_SETSIZE=96            \
3249                      -DHAVE_SOCK_OPTS
3250         add_compat strtod.o strtod=avpriv_strtod
3251         network_extralibs='-lbsd'
3252         exeobjs=compat/plan9/main.o
3253         disable avserver
3254         cp_f='cp'
3255         ;;
3256     none)
3257         ;;
3258     *)
3259         die "Unknown OS '$target_os'."
3260         ;;
3261 esac
3262
3263 # determine libc flavour
3264
3265 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3266 if check_cpp_condition features.h "defined __UCLIBC__"; then
3267     libc_type=uclibc
3268     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3269 elif check_cpp_condition features.h "defined __GLIBC__"; then
3270     libc_type=glibc
3271     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3272 # MinGW headers can be installed on Cygwin, so check for newlib first.
3273 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3274     libc_type=newlib
3275     add_cppflags -U__STRICT_ANSI__
3276 elif check_header _mingw.h; then
3277     libc_type=mingw
3278     check_cpp_condition _mingw.h \
3279         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3280             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3281         die "ERROR: MinGW runtime version must be >= 3.15."
3282     add_cppflags -U__STRICT_ANSI__
3283 elif check_func_headers stdlib.h _get_doserrno; then
3284     libc_type=msvcrt
3285     add_compat strtod.o strtod=avpriv_strtod
3286     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3287                                  _snprintf=avpriv_snprintf  \
3288                                  vsnprintf=avpriv_vsnprintf
3289     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3290     # 0x601 by default unless something else is set by the user.
3291     # This can easily lead to us detecting functions only present
3292     # in such new versions and producing binaries requiring windows 7.0.
3293     # Therefore explicitly set the default to XP unless the user has
3294     # set something else on the command line.
3295     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3296 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3297     libc_type=klibc
3298 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3299     libc_type=bionic
3300     add_compat strtod.o strtod=avpriv_strtod
3301 fi
3302
3303 test -n "$libc_type" && enable $libc_type
3304
3305 # hacks for compiler/libc/os combinations
3306
3307 if enabled_all tms470 glibc; then
3308     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3309     add_cppflags -D__USER_LABEL_PREFIX__=
3310     add_cppflags -D__builtin_memset=memset
3311     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3312     add_cflags   -pds=48    # incompatible redefinition of macro
3313 fi
3314
3315 if enabled_all ccc glibc; then
3316     add_ldflags -Wl,-z,now  # calls to libots crash without this
3317 fi
3318
3319 esc(){
3320     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3321 }
3322
3323 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3324
3325 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3326
3327 set_default $PATHS_LIST
3328 set_default nm
3329
3330 # we need to build at least one lib type
3331 if ! enabled_any static shared; then
3332     cat <<EOF
3333 At least one library type must be built.
3334 Specify --enable-static to build the static libraries or --enable-shared to
3335 build the shared libraries as well. To only build the shared libraries specify
3336 --disable-static in addition to --enable-shared.
3337 EOF
3338     exit 1;
3339 fi
3340
3341 die_license_disabled() {
3342     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3343 }
3344
3345 die_license_disabled gpl libcdio
3346 die_license_disabled gpl libx264
3347 die_license_disabled gpl libxavs
3348 die_license_disabled gpl libxvid
3349 die_license_disabled gpl x11grab
3350
3351 die_license_disabled nonfree libfaac
3352 die_license_disabled nonfree libfdk_aac
3353 die_license_disabled nonfree openssl
3354
3355 die_license_disabled version3 libopencore_amrnb
3356 die_license_disabled version3 libopencore_amrwb
3357 die_license_disabled version3 libvo_aacenc
3358 die_license_disabled version3 libvo_amrwbenc
3359
3360 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3361
3362 disabled optimizations || check_cflags -fomit-frame-pointer
3363
3364 enable_weak_pic() {
3365     disabled pic && return
3366     enable pic
3367     add_cppflags -DPIC
3368     case "$target_os" in
3369     mingw*|cygwin*)
3370         ;;
3371     *)
3372         add_cflags -fPIC
3373         ;;
3374     esac
3375     add_asflags  -fPIC
3376 }
3377
3378 enabled pic && enable_weak_pic
3379
3380 check_cc <<EOF || die "Symbol mangling check failed."
3381 int ff_extern;
3382 EOF
3383 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3384 extern_prefix=${sym%%ff_extern*}
3385
3386 check_cc <<EOF && enable_weak inline_asm
3387 void foo(void) { __asm__ volatile ("" ::); }
3388 EOF
3389
3390 _restrict=
3391 for restrict_keyword in restrict __restrict__ __restrict; do
3392     check_cc <<EOF && _restrict=$restrict_keyword && break
3393 void foo(char * $restrict_keyword p);
3394 EOF
3395 done
3396
3397 check_cc <<EOF && enable pragma_deprecated
3398 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3399 EOF
3400
3401 check_cc <<EOF && enable attribute_packed
3402 struct { int x; } __attribute__((packed)) x;
3403 EOF
3404
3405 check_cc <<EOF && enable attribute_may_alias
3406 union { int x; } __attribute__((may_alias)) x;
3407 EOF
3408
3409 check_cc <<EOF || die "endian test failed"
3410 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3411 EOF
3412 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3413
3414 check_inline_asm inline_asm_labels '"1:\n"'
3415
3416 if enabled alpha; then
3417
3418     check_cflags -mieee
3419
3420 elif enabled arm; then
3421
3422     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3423     enabled thumb && check_cflags -mthumb || check_cflags -marm
3424     nogas=die
3425
3426     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3427         enable vfp_args
3428     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3429         case "${cross_prefix:-$cc}" in
3430             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3431             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3432 __asm__ (".eabi_attribute 28, 1");
3433 int main(void) { return 0; }
3434 EOF
3435         esac
3436         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3437     fi
3438
3439     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3440     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3441     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3442     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3443     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3444     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3445
3446     [ $target_os = linux ] ||
3447         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3448             $ARCH_EXT_LIST_ARM
3449
3450     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3451     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3452
3453     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3454
3455 elif enabled mips; then
3456
3457     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3458
3459 elif enabled parisc; then
3460
3461     if enabled gcc; then
3462         case $($cc -dumpversion) in
3463             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3464         esac
3465     fi
3466
3467 elif enabled ppc; then
3468
3469     enable local_aligned_8 local_aligned_16
3470
3471     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3472     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3473     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3474     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3475
3476     # AltiVec flags: The FSF version of GCC differs from the Apple version
3477     if enabled altivec; then
3478         nogas=warn
3479         check_cflags -maltivec -mabi=altivec &&
3480         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3481         check_cflags -faltivec
3482
3483         # check if our compiler supports Motorola AltiVec C API
3484         check_cc <<EOF || disable altivec
3485 $inc_altivec_h
3486 int main(void) {
3487     vector signed int v1 = (vector signed int) { 0 };
3488     vector signed int v2 = (vector signed int) { 1 };
3489     v1 = vec_add(v1, v2);
3490     return 0;
3491 }
3492 EOF
3493
3494         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3495     fi
3496
3497 elif enabled sparc; then
3498
3499     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3500
3501 elif enabled x86; then
3502
3503     check_builtin rdtsc    intrin.h   "__rdtsc()"
3504     check_builtin mm_empty mmintrin.h "_mm_empty()"
3505
3506     enable local_aligned_8 local_aligned_16
3507
3508     # check whether EBP is available on x86
3509     # As 'i' is stored on the stack, this program will crash
3510     # if the base pointer is used to access it because the
3511     # base pointer is cleared in the inline assembly code.
3512     check_exec_crash <<EOF && enable ebp_available
3513 volatile int i=0;
3514 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3515 return i;
3516 EOF
3517
3518     # check whether EBX is available on x86
3519     check_inline_asm ebx_available '""::"b"(0)' &&
3520         check_inline_asm ebx_available '"":::"%ebx"'
3521
3522     # check whether xmm clobbers are supported
3523     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3524
3525     # check whether binutils is new enough to compile SSSE3/MMXEXT
3526     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3527     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3528
3529     if ! disabled_any asm mmx yasm; then
3530         if check_cmd $yasmexe --version; then
3531             enabled x86_64 && yasm_extra="-m amd64"
3532             yasm_debug="-g dwarf2"
3533         elif check_cmd nasm -v; then
3534             yasmexe=nasm
3535             yasm_debug="-g -F dwarf"
3536             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3537         fi
3538
3539         YASMFLAGS="-f $objformat $yasm_extra"
3540         enabled pic               && append YASMFLAGS "-DPIC"
3541         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3542         case "$objformat" in
3543             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3544         esac
3545
3546         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3547             die "yasm not found, use --disable-yasm for a crippled build"
3548         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3549         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3550     fi
3551
3552     case "$cpu" in
3553         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3554             disable fast_clz
3555         ;;
3556     esac
3557
3558 fi
3559
3560 if enabled asm; then
3561     as=${gas:=$as}
3562     check_as <<EOF && enable gnu_as || \
3563         $nogas "GNU assembler not found, install gas-preprocessor"
3564 .macro m n
3565 \n: .int 0
3566 .endm
3567 m x
3568 EOF
3569 fi
3570
3571 check_ldflags -Wl,--as-needed
3572
3573 if check_func dlopen; then
3574     ldl=
3575 elif check_func dlopen -ldl; then
3576     ldl=-ldl
3577 fi
3578
3579 if ! disabled network; then
3580     check_type "sys/types.h sys/socket.h" socklen_t
3581     check_type netdb.h "struct addrinfo"
3582     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3583     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3584     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3585     check_type netinet/in.h "struct sockaddr_in6"
3586     check_type poll.h "struct pollfd"
3587     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3588     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3589     check_type netinet/sctp.h "struct sctp_event_subscribe"
3590     check_func getaddrinfo $network_extralibs
3591     check_func getservbyport $network_extralibs
3592     # Prefer arpa/inet.h over winsock2
3593     if check_header arpa/inet.h ; then
3594         check_func closesocket
3595     elif check_header winsock2.h ; then
3596         check_func_headers winsock2.h closesocket -lws2 &&
3597             network_extralibs="-lws2" ||
3598         { check_func_headers winsock2.h closesocket -lws2_32 &&
3599             network_extralibs="-lws2_32"; }
3600         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3601         check_type ws2tcpip.h socklen_t
3602         check_type ws2tcpip.h "struct addrinfo"
3603         check_type ws2tcpip.h "struct group_source_req"
3604         check_type ws2tcpip.h "struct ip_mreq_source"
3605         check_type ws2tcpip.h "struct ipv6_mreq"
3606         check_type winsock2.h "struct pollfd"
3607         check_type ws2tcpip.h "struct sockaddr_in6"
3608         check_type ws2tcpip.h "struct sockaddr_storage"
3609         check_struct winsock2.h "struct sockaddr" sa_len
3610     else
3611         disable network
3612     fi
3613 fi
3614
3615 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3616 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3617
3618 check_func  fcntl
3619 check_func  fork
3620 check_func_headers stdlib.h getenv
3621 check_func  gethrtime
3622 check_func  getopt
3623 check_func  getrusage
3624 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3625 check_func  gettimeofday
3626 check_func  inet_aton $network_extralibs
3627 check_func  isatty
3628 check_func  localtime_r
3629 check_func  ${malloc_prefix}memalign            && enable memalign
3630 check_func  mkstemp
3631 check_func  mmap
3632 check_func  mprotect
3633 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3634 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3635 check_func  setrlimit
3636 check_func  strerror_r
3637 check_func  strptime
3638 check_func  strtok_r
3639 check_func  sched_getaffinity
3640 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3641 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3642 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3643 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3644 check_func  sysconf
3645 check_func  sysctl
3646 check_func  usleep
3647 check_func_headers io.h setmode
3648 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3649 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3650 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3651 check_func_headers windows.h GetProcessAffinityMask
3652 check_func_headers windows.h GetProcessTimes
3653 check_func_headers windows.h GetSystemTimeAsFileTime
3654 check_func_headers windows.h MapViewOfFile
3655 check_func_headers windows.h SetConsoleTextAttribute
3656 check_func_headers windows.h Sleep
3657 check_func_headers windows.h VirtualAlloc
3658
3659 check_header direct.h
3660 check_header dlfcn.h
3661 check_header dxva.h
3662 check_header dxva2api.h
3663 check_header io.h
3664 check_header malloc.h
3665 check_header poll.h
3666 check_header sys/mman.h
3667 check_header sys/param.h
3668 check_header sys/resource.h
3669 check_header sys/select.h
3670 check_header sys/time.h
3671 check_header sys/un.h
3672 check_header unistd.h
3673 check_header vdpau/vdpau.h
3674 check_header vdpau/vdpau_x11.h
3675 check_header VideoDecodeAcceleration/VDADecoder.h
3676 check_header windows.h
3677 check_header X11/extensions/XvMClib.h
3678
3679 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3680 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3681
3682 if ! disabled w32threads && ! enabled pthreads; then
3683     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3684 fi
3685
3686 # check for some common methods of building with pthread support
3687 # do this before the optional library checks as some of them require pthreads
3688 if ! disabled pthreads && ! enabled w32threads; then
3689     enable pthreads
3690     if check_func pthread_create; then
3691         :
3692     elif check_func pthread_create -pthread; then
3693         add_cflags -pthread
3694         add_extralibs -pthread
3695     elif check_func pthread_create -pthreads; then
3696         add_cflags -pthreads
3697         add_extralibs -pthreads
3698     elif check_func pthread_create -lpthreadGC2; then
3699         add_extralibs -lpthreadGC2
3700     elif ! check_lib pthread.h pthread_create -lpthread; then
3701         disable pthreads
3702     fi
3703 fi
3704
3705 for thread in $THREADS_LIST; do
3706     if enabled $thread; then
3707         test -n "$thread_type" &&
3708             die "ERROR: Only one thread type must be selected." ||
3709             thread_type="$thread"
3710     fi
3711 done
3712
3713 enabled sync_val_compare_and_swap && enable atomics_gcc
3714 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
3715 enabled MemoryBarrier && enable atomics_win32
3716
3717 check_lib math.h sin -lm && LIBM="-lm"
3718 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3719
3720 atan2f_args=2
3721 ldexpf_args=2
3722 powf_args=2
3723
3724 for func in $MATH_FUNCS; do
3725     eval check_mathfunc $func \${${func}_args:-1}
3726 done
3727
3728 # these are off by default, so fail if requested and not available
3729 enabled avisynth          && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3730 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3731 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3732 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3733 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3734 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3735 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3736                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3737                                done || die "ERROR: libgsm not found"; }
3738 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3739 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3740 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3741 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3742 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3743 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3744 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3745 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3746 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3747 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3748 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3749 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3750 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3751 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3752 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3753 enabled libvpx            && {
3754     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3755                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3756     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3757                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3758     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3759     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3760 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3761 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3762                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3763                                die "ERROR: libx264 version must be >= 0.118."; }
3764 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3765 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3766 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3767                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3768                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3769                                die "ERROR: openssl not found"; }
3770
3771 if enabled gnutls; then
3772     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3773     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3774 fi
3775
3776 # libdc1394 check
3777 if enabled libdc1394; then
3778     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3779         enable libdc1394_2; } ||
3780     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3781         enable libdc1394_1; } ||
3782     die "ERROR: No version of libdc1394 found "
3783 fi
3784
3785 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3786     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3787     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3788     enable sdl
3789 fi
3790
3791 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3792
3793 check_header linux/fb.h
3794 check_header linux/videodev2.h
3795 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3796
3797 check_header sys/videoio.h
3798
3799 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3800 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3801 # w32api 3.12 had it defined wrong
3802 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3803
3804 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3805 { check_header dev/bktr/ioctl_meteor.h &&
3806   check_header dev/bktr/ioctl_bt848.h; } ||
3807 { check_header machine/ioctl_meteor.h &&
3808   check_header machine/ioctl_bt848.h; } ||
3809 { check_header dev/video/meteor/ioctl_meteor.h &&
3810   check_header dev/video/bktr/ioctl_bt848.h; } ||
3811 check_header dev/ic/bt8xx.h
3812
3813 check_header sndio.h
3814 check_header sys/soundcard.h
3815 check_header soundcard.h
3816
3817 enabled_any alsa_indev alsa_outdev &&
3818     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3819
3820 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3821     check_func jack_port_get_latency_range -ljack
3822
3823 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3824
3825 if enabled libcdio; then
3826     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
3827     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3828 fi
3829
3830 enabled x11grab                                           &&
3831 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3832 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3833 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3834
3835 enabled vdpau &&
3836     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3837     disable vdpau
3838
3839 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3840
3841 # add some useful compiler flags if supported
3842 check_cflags -Wdeclaration-after-statement
3843 check_cflags -Wall
3844 check_cflags -Wno-parentheses
3845 check_cflags -Wno-switch
3846 check_cflags -Wno-format-zero-length
3847 check_cflags -Wdisabled-optimization
3848 check_cflags -Wpointer-arith
3849 check_cflags -Wredundant-decls
3850 check_cflags -Wno-pointer-sign
3851 check_cflags -Wcast-qual
3852 check_cflags -Wwrite-strings
3853 check_cflags -Wtype-limits
3854 check_cflags -Wundef
3855 check_cflags -Wmissing-prototypes
3856 check_cflags -Wstrict-prototypes
3857 enabled extra_warnings && check_cflags -Winline
3858
3859 # add some linker flags
3860 check_ldflags -Wl,--warn-common
3861 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3862 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3863
3864 enabled xmm_clobber_test &&
3865     check_ldflags -Wl,--wrap,avcodec_open2              \
3866                   -Wl,--wrap,avcodec_decode_audio4      \
3867                   -Wl,--wrap,avcodec_decode_video2      \
3868                   -Wl,--wrap,avcodec_decode_subtitle2   \
3869                   -Wl,--wrap,avcodec_encode_audio2      \
3870                   -Wl,--wrap,avcodec_encode_video       \
3871                   -Wl,--wrap,avcodec_encode_subtitle    \
3872                   -Wl,--wrap,sws_scale ||
3873     disable xmm_clobber_test
3874
3875 echo "X{};" > $TMPV
3876 if test_ldflags -Wl,--version-script,$TMPV; then
3877     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3878     check_cc <<EOF && enable symver_asm_label
3879 void ff_foo(void) __asm__ ("av_foo@VERSION");
3880 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3881 EOF
3882     check_cc <<EOF && enable symver_gnu_asm
3883 __asm__(".symver ff_foo,av_foo@VERSION");
3884 void ff_foo(void) {}
3885 EOF
3886 fi
3887
3888 if [ -z "$optflags" ]; then
3889     if enabled small; then
3890         optflags=$cflags_size
3891     elif enabled optimizations; then
3892         optflags=$cflags_speed
3893     else
3894         optflags=$cflags_noopt
3895     fi
3896 fi
3897
3898 check_optflags(){
3899     check_cflags "$@"
3900     enabled lto && check_ldflags "$@"
3901 }
3902
3903
3904 if enabled lto; then
3905     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3906     check_cflags  -flto
3907     check_ldflags -flto $cpuflags
3908 fi
3909
3910 check_optflags $optflags
3911 check_optflags -fno-math-errno
3912 check_optflags -fno-signed-zeros
3913
3914 if enabled icc; then
3915     # Just warnings, no remarks
3916     check_cflags -w1
3917     # -wd: Disable following warnings
3918     # 144, 167, 556: -Wno-pointer-sign
3919     # 1292: attribute "foo" ignored
3920     # 1419: external declaration in primary source file
3921     # 10006: ignoring unknown option -fno-signed-zeros
3922     # 10148: ignoring unknown option -Wno-parentheses
3923     # 10156: ignoring option '-W'; no argument required
3924     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3925     # 11030: Warning unknown option --as-needed
3926     # 10156: ignoring option '-export'; no argument required
3927     check_ldflags -wd10156,11030
3928     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3929     enable ebp_available
3930     if enabled x86_32; then
3931         icc_version=$($cc -dumpversion)
3932         test ${icc_version%%.*} -ge 11 &&
3933             check_cflags -falign-stack=maintain-16-byte ||
3934             disable aligned_stack
3935     fi
3936 elif enabled ccc; then
3937     # disable some annoying warnings
3938     add_cflags -msg_disable bitnotint
3939     add_cflags -msg_disable mixfuncvoid
3940     add_cflags -msg_disable nonstandcast
3941     add_cflags -msg_disable unsupieee
3942 elif enabled gcc; then
3943     check_optflags -fno-tree-vectorize
3944     check_cflags -Werror=implicit-function-declaration
3945     check_cflags -Werror=missing-prototypes
3946     check_cflags -Werror=return-type
3947     check_cflags -Werror=declaration-after-statement
3948     check_cflags -Werror=vla
3949 elif enabled llvm_gcc; then
3950     check_cflags -mllvm -stack-alignment=16
3951 elif enabled clang; then
3952     check_cflags -mllvm -stack-alignment=16
3953     check_cflags -Qunused-arguments
3954     check_cflags -Werror=implicit-function-declaration
3955     check_cflags -Werror=missing-prototypes
3956     check_cflags -Werror=return-type
3957 elif enabled armcc; then
3958     # 2523: use of inline assembler is deprecated
3959     add_cflags -W${armcc_opt},--diag_suppress=2523
3960     add_cflags -W${armcc_opt},--diag_suppress=1207
3961     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3962     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3963     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3964     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3965 elif enabled tms470; then
3966     add_cflags -pds=824 -pds=837
3967 elif enabled pathscale; then
3968     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3969 elif enabled_any msvc icl; then
3970     enabled x86_32 && disable aligned_stack
3971     enabled_all x86_32 debug && add_cflags -Oy-
3972     enabled debug && add_ldflags -debug
3973     if enabled icl; then
3974         # basically -fstrict-aliasing that does not work (correctly) on icl 13.x
3975         check_cpp_condition "windows.h" "__ICL < 1300" && add_cflags -Qansi-alias
3976         # icl will pass the inline asm tests but inline asm is currently
3977         # not supported (build will fail)
3978         disable inline_asm
3979     fi
3980 fi
3981
3982 case $target_os in
3983     osf1)
3984         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
3985     ;;
3986     plan9)
3987         add_cppflags -Dmain=plan9_main
3988     ;;
3989 esac
3990
3991 enabled_any $THREADS_LIST      && enable threads
3992 enabled_any $ATOMICS_LIST      && enable atomics_native
3993
3994 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3995
3996 check_deps $CONFIG_LIST       \
3997            $CONFIG_EXTRA      \
3998            $HAVE_LIST         \
3999            $ALL_COMPONENTS    \
4000
4001 ! enabled_any memalign posix_memalign aligned_malloc &&
4002     enabled_any $need_memalign && enable memalign_hack
4003
4004 echo "install prefix            $prefix"
4005 echo "source path               $source_path"
4006 echo "C compiler                $cc"
4007 echo "ARCH                      $arch ($cpu)"
4008 if test "$build_suffix" != ""; then
4009     echo "build suffix              $build_suffix"
4010 fi
4011 if test "$extra_version" != ""; then
4012     echo "version string suffix     $extra_version"
4013 fi
4014 echo "big-endian                ${bigendian-no}"
4015 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4016 if enabled x86; then
4017     echo "${yasmexe}                      ${yasm-no}"
4018     echo "MMX enabled               ${mmx-no}"
4019     echo "MMXEXT enabled            ${mmxext-no}"
4020     echo "3DNow! enabled            ${amd3dnow-no}"
4021     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4022     echo "SSE enabled               ${sse-no}"
4023     echo "SSSE3 enabled             ${ssse3-no}"
4024     echo "AVX enabled               ${avx-no}"
4025     echo "FMA4 enabled              ${fma4-no}"
4026     echo "i686 features enabled     ${i686-no}"
4027     echo "CMOV is fast              ${fast_cmov-no}"
4028     echo "EBX available             ${ebx_available-no}"
4029     echo "EBP available             ${ebp_available-no}"
4030 fi
4031 if enabled arm; then
4032     echo "ARMv5TE enabled           ${armv5te-no}"
4033     echo "ARMv6 enabled             ${armv6-no}"
4034     echo "ARMv6T2 enabled           ${armv6t2-no}"
4035     echo "VFP enabled               ${vfp-no}"
4036     echo "NEON enabled              ${neon-no}"
4037 fi
4038 if enabled ppc; then
4039     echo "AltiVec enabled           ${altivec-no}"
4040     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4041     echo "dcbzl available           ${dcbzl-no}"
4042 fi
4043 if enabled sparc; then
4044     echo "VIS enabled               ${vis-no}"
4045 fi
4046 echo "debug symbols             ${debug-no}"
4047 echo "optimize for size         ${small-no}"
4048 echo "optimizations             ${optimizations-no}"
4049 echo "static                    ${static-no}"
4050 echo "shared                    ${shared-no}"
4051 echo "new filter support        ${avfilter-no}"
4052 echo "network support           ${network-no}"
4053 echo "threading support         ${thread_type-no}"
4054 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4055 echo "SDL support               ${sdl-no}"
4056 test -n "$random_seed" &&
4057     echo "random seed               ${random_seed}"
4058 echo
4059
4060 echo "External libraries:"
4061 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4062 echo
4063
4064 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4065     echo "Enabled ${type}s:"
4066     eval list=\$$(toupper $type)_LIST
4067     print_enabled '_*' $list | print_3_columns
4068     echo
4069 done
4070
4071 license="LGPL version 2.1 or later"
4072 if enabled nonfree; then
4073     license="nonfree and unredistributable"
4074 elif enabled gplv3; then
4075     license="GPL version 3 or later"
4076 elif enabled lgplv3; then
4077     license="LGPL version 3 or later"
4078 elif enabled gpl; then
4079     license="GPL version 2 or later"
4080 fi
4081
4082 echo "License: $license"
4083
4084 echo "Creating config.mak and config.h..."
4085
4086 test -e Makefile || $ln_s "$source_path/Makefile" .
4087
4088 config_files="$TMPH config.mak"
4089
4090 cat > config.mak <<EOF
4091 # Automatically generated by configure - do not modify!
4092 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4093 prefix=$prefix
4094 LIBDIR=\$(DESTDIR)$libdir
4095 SHLIBDIR=\$(DESTDIR)$shlibdir
4096 INCDIR=\$(DESTDIR)$incdir
4097 BINDIR=\$(DESTDIR)$bindir
4098 DATADIR=\$(DESTDIR)$datadir
4099 MANDIR=\$(DESTDIR)$mandir
4100 SRC_PATH=$source_path
4101 CC_IDENT=$cc_ident
4102 ARCH=$arch
4103 CC=$cc
4104 AS=$as
4105 LD=$ld
4106 DEPCC=$dep_cc
4107 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4108 DEPAS=$as
4109 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4110 YASM=$yasmexe
4111 DEPYASM=$yasmexe
4112 AR=$ar
4113 ARFLAGS=$arflags
4114 AR_O=$ar_o
4115 RANLIB=$ranlib
4116 LN_S=$ln_s
4117 CPPFLAGS=$CPPFLAGS
4118 CFLAGS=$CFLAGS
4119 ASFLAGS=$ASFLAGS
4120 AS_C=$AS_C
4121 AS_O=$AS_O
4122 CC_C=$CC_C
4123 CC_E=$CC_E
4124 CC_O=$CC_O
4125 LD_O=$LD_O
4126 LD_LIB=$LD_LIB
4127 LD_PATH=$LD_PATH
4128 DLLTOOL=$dlltool
4129 LDFLAGS=$LDFLAGS
4130 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4131 YASMFLAGS=$YASMFLAGS
4132 BUILDSUF=$build_suffix
4133 FULLNAME=$FULLNAME
4134 LIBPREF=$LIBPREF
4135 LIBSUF=$LIBSUF
4136 LIBNAME=$LIBNAME
4137 SLIBPREF=$SLIBPREF
4138 SLIBSUF=$SLIBSUF
4139 EXESUF=$EXESUF
4140 EXTRA_VERSION=$extra_version
4141 CCDEP=$CCDEP
4142 CCDEP_FLAGS=$CCDEP_FLAGS
4143 ASDEP=$ASDEP
4144 ASDEP_FLAGS=$ASDEP_FLAGS
4145 CC_DEPFLAGS=$CC_DEPFLAGS
4146 AS_DEPFLAGS=$AS_DEPFLAGS
4147 HOSTCC=$host_cc
4148 HOSTLD=$host_ld
4149 HOSTCFLAGS=$host_cflags
4150 HOSTCPPFLAGS=$host_cppflags
4151 HOSTEXESUF=$HOSTEXESUF
4152 HOSTLDFLAGS=$host_ldflags
4153 HOSTLIBS=$host_libs
4154 DEPHOSTCC=$host_cc
4155 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4156 HOSTCCDEP=$HOSTCCDEP
4157 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4158 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4159 HOSTCC_C=$HOSTCC_C
4160 HOSTCC_O=$HOSTCC_O
4161 HOSTLD_O=$HOSTLD_O
4162 TARGET_EXEC=$target_exec $target_exec_args
4163 TARGET_PATH=$target_path
4164 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4165 LIBS-avplay=$sdl_libs
4166 CFLAGS-avplay=$sdl_cflags
4167 ZLIB=$($ldflags_filter -lz)
4168 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4169 EXTRALIBS=$extralibs
4170 COMPAT_OBJS=$compat_objs
4171 EXEOBJS=$exeobjs
4172 INSTALL=install
4173 LIBTARGET=${LIBTARGET}
4174 SLIBNAME=${SLIBNAME}
4175 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4176 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4177 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4178 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4179 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4180 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4181 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4182 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4183 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4184 EOF
4185
4186 get_version(){
4187     lcname=lib${1}
4188     name=$(toupper $lcname)
4189     file=$source_path/$lcname/version.h
4190     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4191     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4192     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4193     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4194     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4195 }
4196
4197 map 'get_version $v' $LIBRARY_LIST
4198
4199 cat > $TMPH <<EOF
4200 /* Automatically generated by configure - do not modify! */
4201 #ifndef LIBAV_CONFIG_H
4202 #define LIBAV_CONFIG_H
4203 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4204 #define LIBAV_LICENSE "$(c_escape $license)"
4205 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4206 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4207 #define restrict $_restrict
4208 #define EXTERN_PREFIX "${extern_prefix}"
4209 #define EXTERN_ASM ${extern_prefix}
4210 #define SLIBSUF "$SLIBSUF"
4211 EOF
4212
4213 test -n "$malloc_prefix" &&
4214     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4215
4216 if enabled yasm; then
4217     append config_files $TMPASM
4218     printf '' >$TMPASM
4219 fi
4220
4221 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4222
4223 print_config ARCH_   "$config_files" $ARCH_LIST
4224 print_config HAVE_   "$config_files" $HAVE_LIST
4225 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4226                                      $CONFIG_EXTRA      \
4227                                      $ALL_COMPONENTS    \
4228
4229 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4230
4231 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4232 cp_if_changed $TMPH config.h
4233 touch .config
4234
4235 enabled yasm && cp_if_changed $TMPASM config.asm
4236
4237 cat > $TMPH <<EOF
4238 /* Generated by ffconf */
4239 #ifndef AVUTIL_AVCONFIG_H
4240 #define AVUTIL_AVCONFIG_H
4241 EOF
4242
4243 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4244
4245 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4246
4247 cp_if_changed $TMPH libavutil/avconfig.h
4248
4249 test -n "$WARNINGS" && printf "\n$WARNINGS"
4250
4251 # build pkg-config files
4252
4253 pkgconfig_generate(){
4254     name=$1
4255     shortname=${name#lib}${build_suffix}
4256     comment=$2
4257     version=$3
4258     libs=$4
4259     requires=$5
4260     enabled ${name#lib} || return 0
4261     mkdir -p $name
4262     cat <<EOF > $name/$name.pc
4263 prefix=$prefix
4264 exec_prefix=\${prefix}
4265 libdir=$libdir
4266 includedir=$incdir
4267
4268 Name: $name
4269 Description: $comment
4270 Version: $version
4271 Requires: $(enabled shared || echo $requires)
4272 Requires.private: $(enabled shared && echo $requires)
4273 Conflicts:
4274 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4275 Libs.private: $(enabled shared && echo $libs)
4276 Cflags: -I\${includedir}
4277 EOF
4278     cat <<EOF > $name/$name-uninstalled.pc
4279 prefix=
4280 exec_prefix=
4281 libdir=\${pcfiledir}
4282 includedir=${source_path}
4283
4284 Name: $name
4285 Description: $comment
4286 Version: $version
4287 Requires: $requires
4288 Conflicts:
4289 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4290 Cflags: -I\${includedir}
4291 EOF
4292 }
4293
4294 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4295 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4296 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4297 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4298
4299 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4300 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4301 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4302 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4303 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4304 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4305 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"