git.sesse.net Git - ffmpeg/blob - 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   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89
  90 Licensing options:
  91   --enable-gpl             allow use of GPL code, the resulting libs
  92                            and binaries will be under GPL [no]
  93   --enable-version3        upgrade (L)GPL to version 3 [no]
  94   --enable-nonfree         allow use of nonfree code, the resulting libs
  95                            and binaries will be unredistributable [no]
  96
  97 Configuration options:
  98   --disable-static         do not build static libraries [no]
  99   --enable-shared          build shared libraries [no]
 100   --enable-small           optimize for size instead of speed
 101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 102   --enable-gray            enable full grayscale support (slower color)
 103   --disable-swscale-alpha  disable alpha channel support in swscale
 104   --disable-all            disable building components, libraries and programs
 105
 106 Program options:
 107   --disable-programs       do not build command line programs
 108   --disable-avconv         disable avconv build
 109   --disable-avplay         disable avplay build
 110   --disable-avprobe        disable avprobe build
 111   --disable-avserver       disable avserver build
 112
 113 Component options:
 114   --disable-doc            do not build documentation
 115   --disable-avdevice       disable libavdevice build
 116   --disable-avcodec        disable libavcodec build
 117   --disable-avformat       disable libavformat build
 118   --disable-avutil         disable libavutil build
 119   --disable-swscale        disable libswscale build
 120   --disable-avfilter       disable video filter support [no]
 121   --disable-avresample     disable libavresample build [no]
 122   --disable-pthreads       disable pthreads [auto]
 123   --disable-w32threads     disable Win32 threads [auto]
 124   --disable-network        disable network support [no]
 125   --disable-dct            disable DCT code
 126   --disable-error-resilience disable error resilience code
 127   --disable-lsp            disable LSP code
 128   --disable-lzo            disable LZO decoder code
 129   --disable-mdct           disable MDCT code
 130   --disable-rdft           disable RDFT code
 131   --disable-fft            disable FFT code
 132
 133 Hardware accelerators:
 134   --enable-dxva2           enable DXVA2 code
 135   --enable-vaapi           enable VAAPI code
 136   --enable-vda             enable VDA code
 137   --enable-vdpau           enable VDPAU code
 138
 139 Individual component options:
 140   --disable-everything     disable all components listed below
 141   --disable-encoder=NAME   disable encoder NAME
 142   --enable-encoder=NAME    enable encoder NAME
 143   --disable-encoders       disable all encoders
 144   --disable-decoder=NAME   disable decoder NAME
 145   --enable-decoder=NAME    enable decoder NAME
 146   --disable-decoders       disable all decoders
 147   --disable-hwaccel=NAME   disable hwaccel NAME
 148   --enable-hwaccel=NAME    enable hwaccel NAME
 149   --disable-hwaccels       disable all hwaccels
 150   --disable-muxer=NAME     disable muxer NAME
 151   --enable-muxer=NAME      enable muxer NAME
 152   --disable-muxers         disable all muxers
 153   --disable-demuxer=NAME   disable demuxer NAME
 154   --enable-demuxer=NAME    enable demuxer NAME
 155   --disable-demuxers       disable all demuxers
 156   --enable-parser=NAME     enable parser NAME
 157   --disable-parser=NAME    disable parser NAME
 158   --disable-parsers        disable all parsers
 159   --enable-bsf=NAME        enable bitstream filter NAME
 160   --disable-bsf=NAME       disable bitstream filter NAME
 161   --disable-bsfs           disable all bitstream filters
 162   --enable-protocol=NAME   enable protocol NAME
 163   --disable-protocol=NAME  disable protocol NAME
 164   --disable-protocols      disable all protocols
 165   --enable-indev=NAME      enable input device NAME
 166   --disable-indev=NAME     disable input device NAME
 167   --disable-indevs         disable input devices
 168   --enable-outdev=NAME     enable output device NAME
 169   --disable-outdev=NAME    disable output device NAME
 170   --disable-outdevs        disable output devices
 171   --disable-devices        disable all devices
 172   --enable-filter=NAME     enable filter NAME
 173   --disable-filter=NAME    disable filter NAME
 174   --disable-filters        disable all filters
 175
 176 External library support:
 177   --enable-avisynth        enable reading of AviSynth script files [no]
 178   --enable-bzlib           enable bzlib [autodetect]
 179   --enable-frei0r          enable frei0r video filtering
 180   --enable-gnutls          enable gnutls [no]
 181   --enable-libbs2b         enable bs2b DSP library [no]
 182   --enable-libcdio         enable audio CD grabbing with libcdio
 183   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 184                            and libraw1394 [no]
 185   --enable-libfaac         enable AAC encoding via libfaac [no]
 186   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 187   --enable-libfreetype     enable libfreetype [no]
 188   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 189   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 190   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 191   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 192   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 193   --enable-libopencv       enable video filtering via libopencv [no]
 194   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 195   --enable-libopus         enable Opus de/encoding via libopus [no]
 196   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 197   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 198   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 199   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 200   --enable-libtheora       enable Theora encoding via libtheora [no]
 201   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 202   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 203   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 204   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 205   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 206   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 207   --enable-libwebp         enable WebP encoding via libwebp [no]
 208   --enable-libx264         enable H.264 encoding via x264 [no]
 209   --enable-libx265         enable HEVC encoding via x265 [no]
 210   --enable-libxavs         enable AVS encoding via xavs [no]
 211   --enable-libxvid         enable Xvid encoding via xvidcore,
 212                            native MPEG-4/Xvid encoder exists [no]
 213   --enable-openssl         enable openssl [no]
 214   --enable-x11grab         enable X11 grabbing [no]
 215   --enable-zlib            enable zlib [autodetect]
 216
 217 Toolchain options:
 218   --arch=ARCH              select architecture [$arch]
 219   --cpu=CPU                select the minimum required CPU (affects
 220                            instruction selection, may crash on older CPUs)
 221   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 222   --enable-cross-compile   assume a cross-compiler is used
 223   --sysroot=PATH           root of cross-build tree
 224   --sysinclude=PATH        location of cross-build system headers
 225   --target-os=OS           compiler targets OS [$target_os]
 226   --target-exec=CMD        command to run executables on target
 227   --target-path=DIR        path to view of build directory on target
 228   --target-samples=DIR     path to samples directory on target
 229   --toolchain=NAME         set tool defaults according to NAME
 230   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 231   --nm=NM                  use nm tool
 232   --ar=AR                  use archive tool AR [$ar_default]
 233   --as=AS                  use assembler AS [$as_default]
 234   --cc=CC                  use C compiler CC [$cc_default]
 235   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 236   --ld=LD                  use linker LD
 237   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
 238   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 239   --host-cc=HOSTCC         use host C compiler HOSTCC
 240   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 241   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 242   --host-ld=HOSTLD         use host linker HOSTLD
 243   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 244   --host-libs=HLIBS        use libs HLIBS when linking for host
 245   --host-os=OS             compiler host OS [$target_os]
 246   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 247   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 248   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 249   --extra-version=STRING   version string suffix []
 250   --optflags=OPTFLAGS      override optimization-related compiler flags
 251   --build-suffix=SUFFIX    library name suffix []
 252   --enable-pic             build position-independent code
 253   --enable-thumb           compile for Thumb instruction set
 254   --enable-lto             use link-time optimization
 255
 256 Advanced options (experts only):
 257   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 258   --disable-symver         disable symbol versioning
 259   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 260   --disable-safe-bitstream-reader
 261                            disable buffer boundary checking in bitreaders
 262                            (faster, but may crash)
 263   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 264   --enable-sram            allow use of on-chip SRAM
 265
 266 Optimization options (experts only):
 267   --disable-asm            disable all assembler optimizations
 268   --disable-altivec        disable AltiVec optimizations
 269   --disable-amd3dnow       disable 3DNow! optimizations
 270   --disable-amd3dnowext    disable 3DNow! extended optimizations
 271   --disable-mmx            disable MMX optimizations
 272   --disable-mmxext         disable MMXEXT optimizations
 273   --disable-sse            disable SSE optimizations
 274   --disable-sse2           disable SSE2 optimizations
 275   --disable-sse3           disable SSE3 optimizations
 276   --disable-ssse3          disable SSSE3 optimizations
 277   --disable-sse4           disable SSE4 optimizations
 278   --disable-sse42          disable SSE4.2 optimizations
 279   --disable-avx            disable AVX optimizations
 280   --disable-xop            disable XOP optimizations
 281   --disable-fma3           disable FMA3 optimizations
 282   --disable-fma4           disable FMA4 optimizations
 283   --disable-avx2           disable AVX2 optimizations
 284   --disable-armv5te        disable armv5te optimizations
 285   --disable-armv6          disable armv6 optimizations
 286   --disable-armv6t2        disable armv6t2 optimizations
 287   --disable-vfp            disable VFP optimizations
 288   --disable-neon           disable NEON optimizations
 289   --disable-inline-asm     disable use of inline assembler
 290   --disable-yasm           disable use of yasm assembler
 291
 292 Developer options (useful when working on Libav itself):
 293   --disable-debug          disable debugging symbols
 294   --enable-debug=LEVEL     set the debug level [$debuglevel]
 295   --disable-optimizations  disable compiler optimizations
 296   --enable-extra-warnings  enable more compiler warnings
 297   --samples=PATH           location of test samples for FATE, if not set use
 298                            \$LIBAV_SAMPLES at make invocation time.
 299   --enable-neon-clobber-test check NEON registers for clobbering (should be
 300                            used only for debugging purposes)
 301   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 302                            should be used only for debugging purposes)
 303   --enable-random          randomly enable/disable components
 304   --disable-random
 305   --enable-random=LIST     randomly enable/disable specific components or
 306   --disable-random=LIST    component groups. LIST is a comma-separated list
 307                            of NAME[:PROB] entries where NAME is a component
 308                            (group) and PROB the probability associated with
 309                            NAME (default 0.5).
 310   --random-seed=VALUE      seed value for --enable/disable-random
 311
 312 NOTE: Object files are built at the place where configure is launched.
 313 EOF
 314   exit 0
 315 }
 316
 317 quotes='""'
 318
 319 log(){
 320     echo "$@" >> $logfile
 321 }
 322
 323 log_file(){
 324     log BEGIN $1
 325     pr -n -t $1 >> $logfile
 326     log END $1
 327 }
 328
 329 echolog(){
 330     log "$@"
 331     echo "$@"
 332 }
 333
 334 warn(){
 335     log "WARNING: $*"
 336     WARNINGS="${WARNINGS}WARNING: $*\n"
 337 }
 338
 339 die(){
 340     echolog "$@"
 341     cat <<EOF
 342
 343 If you think configure made a mistake, make sure you are using the latest
 344 version from Git.  If the latest version fails, report the problem to the
 345 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 346 EOF
 347     if disabled logging; then
 348         cat <<EOF
 349 Rerun configure with logging enabled (do not use --disable-logging), and
 350 include the log this produces with your report.
 351 EOF
 352     else
 353         cat <<EOF
 354 Include the log file "$logfile" produced by configure as this will help
 355 solving the problem.
 356 EOF
 357     fi
 358     exit 1
 359 }
 360
 361 # Avoid locale weirdness, besides we really just want to translate ASCII.
 362 toupper(){
 363     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 364 }
 365
 366 tolower(){
 367     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 368 }
 369
 370 c_escape(){
 371     echo "$*" | sed 's/["\\]/\\\0/g'
 372 }
 373
 374 sh_quote(){
 375     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 376     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 377     echo "$v"
 378 }
 379
 380 cleanws(){
 381     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 382 }
 383
 384 filter(){
 385     pat=$1
 386     shift
 387     for v; do
 388         eval "case $v in $pat) echo $v ;; esac"
 389     done
 390 }
 391
 392 filter_out(){
 393     pat=$1
 394     shift
 395     for v; do
 396         eval "case $v in $pat) ;; *) echo $v ;; esac"
 397     done
 398 }
 399
 400 map(){
 401     m=$1
 402     shift
 403     for v; do eval $m; done
 404 }
 405
 406 add_suffix(){
 407     suffix=$1
 408     shift
 409     for v; do echo ${v}${suffix}; done
 410 }
 411
 412 set_all(){
 413     value=$1
 414     shift
 415     for var in $*; do
 416         eval $var=$value
 417     done
 418 }
 419
 420 set_weak(){
 421     value=$1
 422     shift
 423     for var; do
 424         eval : \${$var:=$value}
 425     done
 426 }
 427
 428 sanitize_var_name(){
 429     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 430 }
 431
 432 set_safe(){
 433     var=$1
 434     shift
 435     eval $(sanitize_var_name "$var")='$*'
 436 }
 437
 438 get_safe(){
 439     eval echo \$$(sanitize_var_name "$1")
 440 }
 441
 442 pushvar(){
 443     for pvar in $*; do
 444         eval level=\${${pvar}_level:=0}
 445         eval ${pvar}_${level}="\$$pvar"
 446         eval ${pvar}_level=$(($level+1))
 447     done
 448 }
 449
 450 popvar(){
 451     for pvar in $*; do
 452         eval level=\${${pvar}_level:-0}
 453         test $level = 0 && continue
 454         eval level=$(($level-1))
 455         eval $pvar="\${${pvar}_${level}}"
 456         eval ${pvar}_level=$level
 457         eval unset ${pvar}_${level}
 458     done
 459 }
 460
 461 enable(){
 462     set_all yes $*
 463 }
 464
 465 disable(){
 466     set_all no $*
 467 }
 468
 469 enable_weak(){
 470     set_weak yes $*
 471 }
 472
 473 disable_weak(){
 474     set_weak no $*
 475 }
 476
 477 enable_safe(){
 478     for var; do
 479         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 480     done
 481 }
 482
 483 disable_safe(){
 484     for var; do
 485         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 486     done
 487 }
 488
 489 do_enable_deep(){
 490     for var; do
 491         enabled $var && continue
 492         eval sel="\$${var}_select"
 493         eval sgs="\$${var}_suggest"
 494         pushvar var sgs
 495         enable_deep $sel
 496         popvar sgs
 497         enable_deep_weak $sgs
 498         popvar var
 499     done
 500 }
 501
 502 enable_deep(){
 503     do_enable_deep $*
 504     enable $*
 505 }
 506
 507 enable_deep_weak(){
 508     for var; do
 509         disabled $var && continue
 510         pushvar var
 511         do_enable_deep $var
 512         popvar var
 513         enable_weak $var
 514     done
 515 }
 516
 517 enabled(){
 518     test "${1#!}" = "$1" && op== || op=!=
 519     eval test "x\$${1#!}" $op "xyes"
 520 }
 521
 522 disabled(){
 523     test "${1#!}" = "$1" && op== || op=!=
 524     eval test "x\$${1#!}" $op "xno"
 525 }
 526
 527 enabled_all(){
 528     for opt; do
 529         enabled $opt || return 1
 530     done
 531 }
 532
 533 disabled_all(){
 534     for opt; do
 535         disabled $opt || return 1
 536     done
 537 }
 538
 539 enabled_any(){
 540     for opt; do
 541         enabled $opt && return 0
 542     done
 543 }
 544
 545 disabled_any(){
 546     for opt; do
 547         disabled $opt && return 0
 548     done
 549     return 1
 550 }
 551
 552 set_default(){
 553     for opt; do
 554         eval : \${$opt:=\$${opt}_default}
 555     done
 556 }
 557
 558 is_in(){
 559     value=$1
 560     shift
 561     for var in $*; do
 562         [ $var = $value ] && return 0
 563     done
 564     return 1
 565 }
 566
 567 do_check_deps(){
 568     for cfg; do
 569         cfg="${cfg#!}"
 570         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 571         disabled ${cfg}_checking && continue
 572         enable ${cfg}_checking
 573         append allopts $cfg
 574
 575         eval dep_all="\$${cfg}_deps"
 576         eval dep_any="\$${cfg}_deps_any"
 577         eval dep_sel="\$${cfg}_select"
 578         eval dep_sgs="\$${cfg}_suggest"
 579         eval dep_ifa="\$${cfg}_if"
 580         eval dep_ifn="\$${cfg}_if_any"
 581
 582         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 583         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 584         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 585
 586         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 587         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 588         enabled_all  $dep_all || disable $cfg
 589         enabled_any  $dep_any || disable $cfg
 590         disabled_any $dep_sel && disable $cfg
 591
 592         if enabled $cfg; then
 593             enable_deep $dep_sel
 594             enable_deep_weak $dep_sgs
 595         fi
 596
 597         disable ${cfg}_checking
 598     done
 599 }
 600
 601 check_deps(){
 602     unset allopts
 603
 604     do_check_deps "$@"
 605
 606     for cfg in $allopts; do
 607         enabled $cfg || continue
 608         eval dep_extralibs="\$${cfg}_extralibs"
 609         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 610     done
 611 }
 612
 613 print_config(){
 614     pfx=$1
 615     files=$2
 616     shift 2
 617     map 'eval echo "$v \${$v:-no}"' "$@" |
 618     awk "BEGIN { split(\"$files\", files) }
 619         {
 620             c = \"$pfx\" toupper(\$1);
 621             v = \$2;
 622             sub(/yes/, 1, v);
 623             sub(/no/,  0, v);
 624             for (f in files) {
 625                 file = files[f];
 626                 if (file ~ /\\.h\$/) {
 627                     printf(\"#define %s %d\\n\", c, v) >>file;
 628                 } else if (file ~ /\\.asm\$/) {
 629                     printf(\"%%define %s %d\\n\", c, v) >>file;
 630                 } else if (file ~ /\\.mak\$/) {
 631                     n = -v ? \"\" : \"!\";
 632                     printf(\"%s%s=yes\\n\", n, c) >>file;
 633                 }
 634             }
 635         }"
 636 }
 637
 638 print_enabled(){
 639     suf=$1
 640     shift
 641     for v; do
 642         enabled $v && printf "%s\n" ${v%$suf};
 643     done
 644 }
 645
 646 append(){
 647     var=$1
 648     shift
 649     eval "$var=\"\$$var $*\""
 650 }
 651
 652 prepend(){
 653     var=$1
 654     shift
 655     eval "$var=\"$* \$$var\""
 656 }
 657
 658 unique(){
 659     var=$1
 660     uniq_list=""
 661     for tok in $(eval echo \$$var); do
 662         uniq_list="$(filter_out $tok $uniq_list) $tok"
 663     done
 664     eval "$var=\"${uniq_list}\""
 665 }
 666
 667 add_cppflags(){
 668     append CPPFLAGS "$@"
 669 }
 670
 671 add_cflags(){
 672     append CFLAGS $($cflags_filter "$@")
 673 }
 674
 675 add_asflags(){
 676     append ASFLAGS $($asflags_filter "$@")
 677 }
 678
 679 add_ldflags(){
 680     append LDFLAGS $($ldflags_filter "$@")
 681 }
 682
 683 add_stripflags(){
 684     append STRIPFLAGS "$@"
 685 }
 686
 687 add_extralibs(){
 688     prepend extralibs $($ldflags_filter "$@")
 689 }
 690
 691 add_host_cppflags(){
 692     append host_cppflags "$@"
 693 }
 694
 695 add_host_cflags(){
 696     append host_cflags $($host_cflags_filter "$@")
 697 }
 698
 699 add_host_ldflags(){
 700     append host_ldflags $($host_ldflags_filter "$@")
 701 }
 702
 703 add_compat(){
 704     append compat_objs $1
 705     shift
 706     map 'add_cppflags -D$v' "$@"
 707 }
 708
 709 check_cmd(){
 710     log "$@"
 711     "$@" >> $logfile 2>&1
 712 }
 713
 714 cc_o(){
 715     eval printf '%s\\n' $CC_O
 716 }
 717
 718 cc_e(){
 719     eval printf '%s\\n' $CC_E
 720 }
 721
 722 check_cc(){
 723     log check_cc "$@"
 724     cat > $TMPC
 725     log_file $TMPC
 726     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 727 }
 728
 729 check_cpp(){
 730     log check_cpp "$@"
 731     cat > $TMPC
 732     log_file $TMPC
 733     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 734 }
 735
 736 as_o(){
 737     eval printf '%s\\n' $AS_O
 738 }
 739
 740 check_as(){
 741     log check_as "$@"
 742     cat > $TMPS
 743     log_file $TMPS
 744     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 745 }
 746
 747 check_inline_asm(){
 748     log check_inline_asm "$@"
 749     name="$1"
 750     code="$2"
 751     shift 2
 752     disable $name
 753     check_cc "$@" <<EOF && enable $name
 754 void foo(void){ __asm__ volatile($code); }
 755 EOF
 756 }
 757
 758 check_insn(){
 759     log check_insn "$@"
 760     check_inline_asm ${1}_inline "\"$2\""
 761     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 762 }
 763
 764 check_yasm(){
 765     log check_yasm "$@"
 766     echo "$1" > $TMPS
 767     log_file $TMPS
 768     shift 1
 769     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 770 }
 771
 772 ld_o(){
 773     eval printf '%s\\n' $LD_O
 774 }
 775
 776 check_ld(){
 777     log check_ld "$@"
 778     flags=$(filter_out '-l*' "$@")
 779     libs=$(filter '-l*' "$@")
 780     check_cc $($cflags_filter $flags) || return
 781     flags=$($ldflags_filter $flags)
 782     libs=$($ldflags_filter $libs)
 783     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 784 }
 785
 786 print_include(){
 787     hdr=$1
 788     test "${hdr%.h}" = "${hdr}" &&
 789         echo "#include $hdr"    ||
 790         echo "#include <$hdr>"
 791 }
 792
 793 check_code(){
 794     log check_code "$@"
 795     check=$1
 796     headers=$2
 797     code=$3
 798     shift 3
 799     {
 800         for hdr in $headers; do
 801             print_include $hdr
 802         done
 803         echo "int main(void) { $code; return 0; }"
 804     } | check_$check "$@"
 805 }
 806
 807 check_cppflags(){
 808     log check_cppflags "$@"
 809     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 810 int x;
 811 EOF
 812 }
 813
 814 test_cflags(){
 815     log test_cflags "$@"
 816     set -- $($cflags_filter "$@")
 817     check_cc "$@" <<EOF
 818 int x;
 819 EOF
 820 }
 821
 822 check_cflags(){
 823     log check_cflags "$@"
 824     test_cflags "$@" && add_cflags "$@"
 825 }
 826
 827 test_ldflags(){
 828     log test_ldflags "$@"
 829     check_ld "$@" <<EOF
 830 int main(void){ return 0; }
 831 EOF
 832 }
 833
 834 check_ldflags(){
 835     log check_ldflags "$@"
 836     test_ldflags "$@" && add_ldflags "$@"
 837 }
 838
 839 test_stripflags(){
 840     log test_stripflags "$@"
 841     # call check_cc to get a fresh TMPO
 842     check_cc <<EOF
 843 int main(void) { return 0; }
 844 EOF
 845     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 846 }
 847
 848 check_stripflags(){
 849     log check_stripflags "$@"
 850     test_stripflags "$@" && add_stripflags "$@"
 851 }
 852
 853 check_header(){
 854     log check_header "$@"
 855     header=$1
 856     shift
 857     disable_safe $header
 858     check_cpp "$@" <<EOF && enable_safe $header
 859 #include <$header>
 860 int x;
 861 EOF
 862 }
 863
 864 check_func(){
 865     log check_func "$@"
 866     func=$1
 867     shift
 868     disable $func
 869     check_ld "$@" <<EOF && enable $func
 870 extern int $func();
 871 int main(void){ $func(); }
 872 EOF
 873 }
 874
 875 check_mathfunc(){
 876     log check_mathfunc "$@"
 877     func=$1
 878     narg=$2
 879     shift 2
 880     test $narg = 2 && args="f, g" || args="f"
 881     disable $func
 882     check_ld "$@" <<EOF && enable $func
 883 #include <math.h>
 884 float foo(float f, float g) { return $func($args); }
 885 int main(void){ return 0; }
 886 EOF
 887 }
 888
 889 check_func_headers(){
 890     log check_func_headers "$@"
 891     headers=$1
 892     funcs=$2
 893     shift 2
 894     {
 895         for hdr in $headers; do
 896             print_include $hdr
 897         done
 898         for func in $funcs; do
 899             echo "long check_$func(void) { return (long) $func; }"
 900         done
 901         echo "int main(void) { return 0; }"
 902     } | check_ld "$@" && enable $funcs && enable_safe $headers
 903 }
 904
 905 check_cpp_condition(){
 906     log check_cpp_condition "$@"
 907     header=$1
 908     condition=$2
 909     shift 2
 910     check_cpp "$@" <<EOF
 911 #include <$header>
 912 #if !($condition)
 913 #error "unsatisfied condition: $condition"
 914 #endif
 915 EOF
 916 }
 917
 918 check_lib(){
 919     log check_lib "$@"
 920     header="$1"
 921     func="$2"
 922     shift 2
 923     check_header $header && check_func $func "$@" && add_extralibs "$@"
 924 }
 925
 926 check_lib2(){
 927     log check_lib2 "$@"
 928     headers="$1"
 929     funcs="$2"
 930     shift 2
 931     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 932 }
 933
 934 check_pkg_config(){
 935     log check_pkg_config "$@"
 936     pkg="$1"
 937     headers="$2"
 938     funcs="$3"
 939     shift 3
 940     check_cmd $pkg_config --exists --print-errors $pkg || return
 941     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
 942     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
 943     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 944         set_safe ${pkg}_cflags $pkg_cflags   &&
 945         set_safe ${pkg}_libs   $pkg_libs
 946 }
 947
 948 check_exec(){
 949     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 950 }
 951
 952 check_exec_crash(){
 953     code=$(cat)
 954
 955     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 956     # are safe but may not be available everywhere.  Thus we use
 957     # raise(SIGTERM) instead.  The check is run in a subshell so we
 958     # can redirect the "Terminated" message from the shell.  SIGBUS
 959     # is not defined by standard C so it is used conditionally.
 960
 961     (check_exec "$@") >> $logfile 2>&1 <<EOF
 962 #include <signal.h>
 963 static void sighandler(int sig){
 964     raise(SIGTERM);
 965 }
 966 int foo(void){
 967     $code
 968 }
 969 int (*func_ptr)(void) = foo;
 970 int main(void){
 971     signal(SIGILL, sighandler);
 972     signal(SIGFPE, sighandler);
 973     signal(SIGSEGV, sighandler);
 974 #ifdef SIGBUS
 975     signal(SIGBUS, sighandler);
 976 #endif
 977     return func_ptr();
 978 }
 979 EOF
 980 }
 981
 982 check_type(){
 983     log check_type "$@"
 984     headers=$1
 985     type=$2
 986     shift 2
 987     disable_safe "$type"
 988     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 989 }
 990
 991 check_struct(){
 992     log check_struct "$@"
 993     headers=$1
 994     struct=$2
 995     member=$3
 996     shift 3
 997     disable_safe "${struct}_${member}"
 998     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 999         enable_safe "${struct}_${member}"
1000 }
1001
1002 check_builtin(){
1003     log check_builtin "$@"
1004     name=$1
1005     headers=$2
1006     builtin=$3
1007     shift 3
1008     disable "$name"
1009     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1010 }
1011
1012 check_compile_assert(){
1013     log check_compile_assert "$@"
1014     name=$1
1015     headers=$2
1016     condition=$3
1017     shift 3
1018     disable "$name"
1019     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1020 }
1021
1022 require(){
1023     name="$1"
1024     header="$2"
1025     func="$3"
1026     shift 3
1027     check_lib $header $func "$@" || die "ERROR: $name not found"
1028 }
1029
1030 require2(){
1031     name="$1"
1032     headers="$2"
1033     func="$3"
1034     shift 3
1035     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1036 }
1037
1038 require_pkg_config(){
1039     pkg="$1"
1040     check_pkg_config "$@" || die "ERROR: $pkg not found"
1041     add_cflags    $(get_safe ${pkg}_cflags)
1042     add_extralibs $(get_safe ${pkg}_libs)
1043 }
1044
1045 hostcc_e(){
1046     eval printf '%s\\n' $HOSTCC_E
1047 }
1048
1049 hostcc_o(){
1050     eval printf '%s\\n' $HOSTCC_O
1051 }
1052
1053 check_host_cc(){
1054     log check_host_cc "$@"
1055     cat > $TMPC
1056     log_file $TMPC
1057     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1058 }
1059
1060 check_host_cpp(){
1061     log check_host_cpp "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1065 }
1066
1067 check_host_cppflags(){
1068     log check_host_cppflags "$@"
1069     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1070 int x;
1071 EOF
1072 }
1073
1074 check_host_cflags(){
1075     log check_host_cflags "$@"
1076     set -- $($host_cflags_filter "$@")
1077     check_host_cc "$@" <<EOF && append host_cflags "$@"
1078 int x;
1079 EOF
1080 }
1081
1082 check_host_cpp_condition(){
1083     log check_host_cpp_condition "$@"
1084     header=$1
1085     condition=$2
1086     shift 2
1087     check_host_cpp "$@" <<EOF
1088 #include <$header>
1089 #if !($condition)
1090 #error "unsatisfied condition: $condition"
1091 #endif
1092 EOF
1093 }
1094
1095 apply(){
1096     file=$1
1097     shift
1098     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1099 }
1100
1101 cp_if_changed(){
1102     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1103     mkdir -p "$(dirname $2)"
1104     $cp_f "$1" "$2"
1105 }
1106
1107 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1108 # system-dependent things.
1109
1110 COMPONENT_LIST="
1111     bsfs
1112     decoders
1113     demuxers
1114     encoders
1115     filters
1116     hwaccels
1117     indevs
1118     muxers
1119     outdevs
1120     parsers
1121     protocols
1122 "
1123
1124 EXAMPLE_LIST="
1125     avcodec_example
1126     filter_audio_example
1127     metadata_example
1128     output_example
1129     transcode_aac_example
1130 "
1131
1132 EXTERNAL_LIBRARY_LIST="
1133     avisynth
1134     bzlib
1135     frei0r
1136     gnutls
1137     libbs2b
1138     libcdio
1139     libdc1394
1140     libfaac
1141     libfdk_aac
1142     libfontconfig
1143     libfreetype
1144     libgsm
1145     libilbc
1146     libmp3lame
1147     libopencore_amrnb
1148     libopencore_amrwb
1149     libopencv
1150     libopenjpeg
1151     libopus
1152     libpulse
1153     librtmp
1154     libschroedinger
1155     libspeex
1156     libtheora
1157     libtwolame
1158     libvo_aacenc
1159     libvo_amrwbenc
1160     libvorbis
1161     libvpx
1162     libwavpack
1163     libwebp
1164     libx264
1165     libx265
1166     libxavs
1167     libxvid
1168     openssl
1169     x11grab
1170     zlib
1171 "
1172
1173 FEATURE_LIST="
1174     gray
1175     hardcoded_tables
1176     runtime_cpudetect
1177     safe_bitstream_reader
1178     shared
1179     small
1180     sram
1181     static
1182     swscale_alpha
1183 "
1184
1185 HWACCEL_LIST="
1186     dxva2
1187     vaapi
1188     vda
1189     vdpau
1190 "
1191
1192 LIBRARY_LIST="
1193     avcodec
1194     avdevice
1195     avfilter
1196     avformat
1197     avresample
1198     avutil
1199     swscale
1200 "
1201
1202 LICENSE_LIST="
1203     gpl
1204     nonfree
1205     version3
1206 "
1207
1208 PROGRAM_LIST="
1209     avconv
1210     avplay
1211     avprobe
1212     avserver
1213 "
1214
1215 SUBSYSTEM_LIST="
1216     dct
1217     doc
1218     error_resilience
1219     fft
1220     lsp
1221     lzo
1222     mdct
1223     network
1224     rdft
1225 "
1226
1227 CONFIG_LIST="
1228     $COMPONENT_LIST
1229     $EXAMPLE_LIST
1230     $EXTERNAL_LIBRARY_LIST
1231     $FEATURE_LIST
1232     $HWACCEL_LIST
1233     $LICENSE_LIST
1234     $LIBRARY_LIST
1235     $PROGRAM_LIST
1236     $SUBSYSTEM_LIST
1237     memalign_hack
1238     neon_clobber_test
1239     pic
1240     pod2man
1241     texi2html
1242     thumb
1243     xmm_clobber_test
1244 "
1245
1246 THREADS_LIST="
1247     pthreads
1248     w32threads
1249 "
1250
1251 ATOMICS_LIST="
1252     atomics_gcc
1253     atomics_suncc
1254     atomics_win32
1255 "
1256
1257 ARCH_LIST="
1258     aarch64
1259     alpha
1260     arm
1261     avr32
1262     avr32_ap
1263     avr32_uc
1264     bfin
1265     ia64
1266     m68k
1267     mips
1268     mips64
1269     parisc
1270     ppc
1271     ppc64
1272     s390
1273     sh4
1274     sparc
1275     sparc64
1276     tilegx
1277     tilepro
1278     tomi
1279     x86
1280     x86_32
1281     x86_64
1282 "
1283
1284 ARCH_EXT_LIST_ARM="
1285     armv5te
1286     armv6
1287     armv6t2
1288     armv8
1289     neon
1290     vfp
1291     vfpv3
1292 "
1293
1294 ARCH_EXT_LIST_X86_SIMD="
1295     amd3dnow
1296     amd3dnowext
1297     avx
1298     avx2
1299     fma3
1300     fma4
1301     mmx
1302     mmxext
1303     sse
1304     sse2
1305     sse3
1306     sse4
1307     sse42
1308     ssse3
1309     xop
1310 "
1311
1312 ARCH_EXT_LIST_PPC="
1313     altivec
1314     dcbzl
1315     ldbrx
1316     ppc4xx
1317 "
1318
1319 ARCH_EXT_LIST_X86="
1320     $ARCH_EXT_LIST_X86_SIMD
1321     cpunop
1322     i686
1323 "
1324
1325 ARCH_EXT_LIST="
1326     $ARCH_EXT_LIST_ARM
1327     $ARCH_EXT_LIST_PPC
1328     $ARCH_EXT_LIST_X86
1329     loongson
1330     vis
1331 "
1332
1333 ARCH_FEATURES="
1334     aligned_stack
1335     fast_64bit
1336     fast_clz
1337     fast_cmov
1338     local_aligned_8
1339     local_aligned_16
1340 "
1341
1342 BUILTIN_LIST="
1343     atomic_cas_ptr
1344     machine_rw_barrier
1345     MemoryBarrier
1346     mm_empty
1347     rdtsc
1348     sync_val_compare_and_swap
1349 "
1350 HAVE_LIST_CMDLINE="
1351     inline_asm
1352     symver
1353     yasm
1354 "
1355
1356 HAVE_LIST_PUB="
1357     bigendian
1358     fast_unaligned
1359 "
1360
1361 HEADERS_LIST="
1362     alsa_asoundlib_h
1363     altivec_h
1364     arpa_inet_h
1365     cdio_paranoia_h
1366     cdio_paranoia_paranoia_h
1367     dev_bktr_ioctl_bt848_h
1368     dev_bktr_ioctl_meteor_h
1369     dev_ic_bt8xx_h
1370     dev_video_bktr_ioctl_bt848_h
1371     dev_video_meteor_ioctl_meteor_h
1372     direct_h
1373     dlfcn_h
1374     dxva_h
1375     gsm_h
1376     io_h
1377     mach_mach_time_h
1378     machine_ioctl_bt848_h
1379     machine_ioctl_meteor_h
1380     malloc_h
1381     poll_h
1382     sndio_h
1383     soundcard_h
1384     sys_mman_h
1385     sys_param_h
1386     sys_resource_h
1387     sys_select_h
1388     sys_soundcard_h
1389     sys_time_h
1390     sys_un_h
1391     sys_videoio_h
1392     unistd_h
1393     windows_h
1394     winsock2_h
1395 "
1396
1397 MATH_FUNCS="
1398     atanf
1399     atan2f
1400     cbrtf
1401     cosf
1402     exp2
1403     exp2f
1404     expf
1405     isinf
1406     isnan
1407     ldexpf
1408     llrint
1409     llrintf
1410     log2
1411     log2f
1412     log10f
1413     lrint
1414     lrintf
1415     powf
1416     rint
1417     round
1418     roundf
1419     sinf
1420     trunc
1421     truncf
1422 "
1423
1424 SYSTEM_FUNCS="
1425     aligned_malloc
1426     closesocket
1427     CommandLineToArgvW
1428     CoTaskMemFree
1429     CryptGenRandom
1430     dlopen
1431     fcntl
1432     flt_lim
1433     fork
1434     getaddrinfo
1435     gethrtime
1436     getopt
1437     GetProcessAffinityMask
1438     GetProcessMemoryInfo
1439     GetProcessTimes
1440     getrusage
1441     getservbyport
1442     GetSystemTimeAsFileTime
1443     gettimeofday
1444     inet_aton
1445     isatty
1446     jack_port_get_latency_range
1447     localtime_r
1448     mach_absolute_time
1449     MapViewOfFile
1450     memalign
1451     mkstemp
1452     mmap
1453     mprotect
1454     nanosleep
1455     posix_memalign
1456     sched_getaffinity
1457     SetConsoleTextAttribute
1458     setmode
1459     setrlimit
1460     Sleep
1461     strerror_r
1462     strptime
1463     sysconf
1464     sysctl
1465     usleep
1466     VirtualAlloc
1467 "
1468
1469 TOOLCHAIN_FEATURES="
1470     asm_mod_q
1471     attribute_may_alias
1472     attribute_packed
1473     ebp_available
1474     ebx_available
1475     gnu_as
1476     ibm_asm
1477     inline_asm_labels
1478     pragma_deprecated
1479     symver_asm_label
1480     symver_gnu_asm
1481     vfp_args
1482     xform_asm
1483     xmm_clobbers
1484 "
1485
1486 TYPES_LIST="
1487     socklen_t
1488     struct_addrinfo
1489     struct_group_source_req
1490     struct_ip_mreq_source
1491     struct_ipv6_mreq
1492     struct_pollfd
1493     struct_rusage_ru_maxrss
1494     struct_sockaddr_in6
1495     struct_sockaddr_sa_len
1496     struct_sockaddr_storage
1497     struct_v4l2_frmivalenum_discrete
1498 "
1499
1500 HAVE_LIST="
1501     $ARCH_EXT_LIST
1502     $(add_suffix _external $ARCH_EXT_LIST)
1503     $(add_suffix _inline   $ARCH_EXT_LIST)
1504     $ARCH_FEATURES
1505     $ATOMICS_LIST
1506     $BUILTIN_LIST
1507     $HAVE_LIST_CMDLINE
1508     $HAVE_LIST_PUB
1509     $HEADERS_LIST
1510     $MATH_FUNCS
1511     $SYSTEM_FUNCS
1512     $THREADS_LIST
1513     $TOOLCHAIN_FEATURES
1514     $TYPES_LIST
1515     atomics_native
1516     dos_paths
1517     dxva2_lib
1518     libc_msvcrt
1519     libdc1394_1
1520     libdc1394_2
1521     sdl
1522     threads
1523     vdpau_x11
1524     xlib
1525 "
1526
1527 # options emitted with CONFIG_ prefix but not available on the command line
1528 CONFIG_EXTRA="
1529     aandcttables
1530     ac3dsp
1531     audio_frame_queue
1532     cabac
1533     dsputil
1534     gcrypt
1535     golomb
1536     gplv3
1537     h263dsp
1538     h264chroma
1539     h264dsp
1540     h264pred
1541     h264qpel
1542     hpeldsp
1543     huffman
1544     intrax8
1545     lgplv3
1546     lpc
1547     mpegaudio
1548     mpegaudiodsp
1549     mpegvideo
1550     mpegvideoenc
1551     nettle
1552     rangecoder
1553     riffdec
1554     riffenc
1555     rtpdec
1556     rtpenc_chain
1557     sinewin
1558     tpeldsp
1559     videodsp
1560     vp3dsp
1561 "
1562
1563 CMDLINE_SELECT="
1564     $ARCH_EXT_LIST
1565     $CONFIG_LIST
1566     $HAVE_LIST_CMDLINE
1567     $THREADS_LIST
1568     asm
1569     cross_compile
1570     debug
1571     extra_warnings
1572     logging
1573     lto
1574     optimizations
1575 "
1576
1577 PATHS_LIST="
1578     bindir
1579     datadir
1580     docdir
1581     incdir
1582     libdir
1583     mandir
1584     prefix
1585     shlibdir
1586 "
1587
1588 CMDLINE_SET="
1589     $PATHS_LIST
1590     ar
1591     arch
1592     as
1593     build_suffix
1594     cc
1595     cpu
1596     cross_prefix
1597     dep_cc
1598     extra_version
1599     host_cc
1600     host_cflags
1601     host_ld
1602     host_ldflags
1603     host_libs
1604     host_os
1605     ld
1606     logfile
1607     malloc_prefix
1608     nm
1609     optflags
1610     pkg_config
1611     pkg_config_flags
1612     random_seed
1613     samples
1614     sysinclude
1615     sysroot
1616     target_exec
1617     target_os
1618     target_path
1619     target_samples
1620     toolchain
1621 "
1622
1623 CMDLINE_APPEND="
1624     extra_cflags
1625     host_cppflags
1626 "
1627
1628 # code dependency declarations
1629
1630 # architecture extensions
1631
1632 armv5te_deps="arm"
1633 armv6_deps="arm"
1634 armv6t2_deps="arm"
1635 armv8_deps="aarch64"
1636 neon_deps_any="aarch64 arm"
1637 vfp_deps_any="aarch64 arm"
1638 vfpv3_deps="vfp"
1639
1640 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1641
1642 altivec_deps="ppc"
1643 ppc4xx_deps="ppc"
1644
1645 cpunop_deps="i686"
1646 x86_64_select="i686"
1647 x86_64_suggest="fast_cmov"
1648
1649 amd3dnow_deps="mmx"
1650 amd3dnowext_deps="amd3dnow"
1651 i686_deps="x86"
1652 mmx_deps="x86"
1653 mmxext_deps="mmx"
1654 sse_deps="mmxext"
1655 sse2_deps="sse"
1656 sse3_deps="sse2"
1657 ssse3_deps="sse3"
1658 sse4_deps="ssse3"
1659 sse42_deps="sse4"
1660 avx_deps="sse42"
1661 xop_deps="avx"
1662 fma3_deps="avx"
1663 fma4_deps="avx"
1664 avx2_deps="avx"
1665
1666 mmx_external_deps="yasm"
1667 mmx_inline_deps="inline_asm"
1668 mmx_suggest="mmx_external mmx_inline"
1669
1670 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1671     eval dep=\$${ext}_deps
1672     eval ${ext}_external_deps='"${dep}_external"'
1673     eval ${ext}_inline_deps='"${dep}_inline"'
1674     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1675 done
1676
1677 aligned_stack_if_any="aarch64 ppc x86"
1678 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1679 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1680 fast_unaligned_if_any="aarch64 ppc x86"
1681
1682 need_memalign="altivec neon sse"
1683
1684 # system capabilities
1685 log2_deps="!libc_msvcrt"
1686
1687 symver_if_any="symver_asm_label symver_gnu_asm"
1688
1689 # threading support
1690 atomics_gcc_if="sync_val_compare_and_swap"
1691 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1692 atomics_win32_if="MemoryBarrier"
1693 atomics_native_if_any="$ATOMICS_LIST"
1694 w32threads_deps="atomics_native"
1695 threads_if_any="$THREADS_LIST"
1696
1697 # subsystems
1698 dct_select="rdft"
1699 error_resilience_select="dsputil"
1700 mdct_select="fft"
1701 rdft_select="fft"
1702 mpegaudio_select="mpegaudiodsp"
1703 mpegaudiodsp_select="dct"
1704 mpegvideo_select="dsputil hpeldsp videodsp"
1705 mpegvideoenc_select="dsputil mpegvideo"
1706
1707 # decoders / encoders
1708 aac_decoder_select="mdct sinewin"
1709 aac_encoder_select="audio_frame_queue mdct sinewin"
1710 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1711 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1712 ac3_encoder_select="mdct ac3dsp dsputil"
1713 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1714 aic_decoder_select="dsputil golomb"
1715 alac_encoder_select="lpc"
1716 als_decoder_select="dsputil"
1717 amrnb_decoder_select="lsp"
1718 amrwb_decoder_select="lsp"
1719 amv_decoder_select="sp5x_decoder"
1720 ape_decoder_select="dsputil"
1721 asv1_decoder_select="dsputil"
1722 asv1_encoder_select="dsputil"
1723 asv2_decoder_select="dsputil"
1724 asv2_encoder_select="dsputil"
1725 atrac1_decoder_select="mdct sinewin"
1726 atrac3_decoder_select="mdct"
1727 atrac3p_decoder_select="mdct sinewin"
1728 bink_decoder_select="dsputil hpeldsp"
1729 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1730 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1731 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1732 cllc_decoder_select="dsputil"
1733 comfortnoise_encoder_select="lpc"
1734 cook_decoder_select="dsputil mdct sinewin"
1735 cscd_decoder_select="lzo"
1736 cscd_decoder_suggest="zlib"
1737 dca_decoder_select="mdct"
1738 dnxhd_decoder_select="dsputil"
1739 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1740 dvvideo_decoder_select="dsputil"
1741 dvvideo_encoder_select="dsputil"
1742 dxa_decoder_deps="zlib"
1743 eac3_decoder_select="ac3_decoder"
1744 eac3_encoder_select="ac3_encoder"
1745 eamad_decoder_select="aandcttables dsputil mpegvideo"
1746 eatgq_decoder_select="aandcttables dsputil"
1747 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1748 exr_decoder_deps="zlib"
1749 ffv1_decoder_select="golomb rangecoder"
1750 ffv1_encoder_select="rangecoder"
1751 ffvhuff_decoder_select="huffyuv_decoder"
1752 ffvhuff_encoder_select="huffyuv_encoder"
1753 fic_decoder_select="golomb"
1754 flac_decoder_select="golomb"
1755 flac_encoder_select="dsputil golomb lpc"
1756 flashsv_decoder_deps="zlib"
1757 flashsv_encoder_deps="zlib"
1758 flashsv2_decoder_deps="zlib"
1759 flv_decoder_select="h263_decoder"
1760 flv_encoder_select="h263_encoder"
1761 fourxm_decoder_select="dsputil"
1762 fraps_decoder_select="dsputil huffman"
1763 g2m_decoder_deps="zlib"
1764 g2m_decoder_select="dsputil"
1765 h261_decoder_select="error_resilience mpegvideo"
1766 h261_encoder_select="aandcttables mpegvideoenc"
1767 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1768 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1769 h263i_decoder_select="h263_decoder"
1770 h263p_encoder_select="h263_encoder"
1771 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1772 h264_decoder_suggest="error_resilience"
1773 hevc_decoder_select="cabac dsputil golomb videodsp"
1774 huffyuv_decoder_select="dsputil"
1775 huffyuv_encoder_select="dsputil huffman"
1776 iac_decoder_select="imc_decoder"
1777 imc_decoder_select="dsputil fft mdct sinewin"
1778 indeo3_decoder_select="hpeldsp"
1779 interplay_video_decoder_select="hpeldsp"
1780 jpegls_decoder_select="golomb mjpeg_decoder"
1781 jpegls_encoder_select="golomb"
1782 jv_decoder_select="dsputil"
1783 lagarith_decoder_select="dsputil"
1784 ljpeg_encoder_select="aandcttables mpegvideoenc"
1785 loco_decoder_select="golomb"
1786 mdec_decoder_select="dsputil error_resilience mpegvideo"
1787 metasound_decoder_select="lsp mdct sinewin"
1788 mimic_decoder_select="dsputil hpeldsp"
1789 mjpeg_decoder_select="dsputil hpeldsp"
1790 mjpeg_encoder_select="aandcttables mpegvideoenc"
1791 mjpegb_decoder_select="mjpeg_decoder"
1792 mlp_decoder_select="mlp_parser"
1793 motionpixels_decoder_select="dsputil"
1794 mp1_decoder_select="mpegaudio"
1795 mp1float_decoder_select="mpegaudio"
1796 mp2_decoder_select="mpegaudio"
1797 mp2float_decoder_select="mpegaudio"
1798 mp3_decoder_select="mpegaudio"
1799 mp3adu_decoder_select="mpegaudio"
1800 mp3adufloat_decoder_select="mpegaudio"
1801 mp3float_decoder_select="mpegaudio"
1802 mp3on4_decoder_select="mpegaudio"
1803 mp3on4float_decoder_select="mpegaudio"
1804 mpc7_decoder_select="dsputil mpegaudiodsp"
1805 mpc8_decoder_select="mpegaudiodsp"
1806 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1807 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1808 mpeg1video_decoder_select="error_resilience mpegvideo"
1809 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1810 mpeg2video_decoder_select="error_resilience mpegvideo"
1811 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1812 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1813 mpeg4_encoder_select="h263_encoder"
1814 msmpeg4v1_decoder_select="h263_decoder"
1815 msmpeg4v2_decoder_select="h263_decoder"
1816 msmpeg4v2_encoder_select="h263_encoder"
1817 msmpeg4v3_decoder_select="h263_decoder"
1818 msmpeg4v3_encoder_select="h263_encoder"
1819 mss2_decoder_select="error_resilience vc1_decoder"
1820 mxpeg_decoder_select="mjpeg_decoder"
1821 nellymoser_decoder_select="mdct sinewin"
1822 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1823 nuv_decoder_select="dsputil lzo"
1824 on2avc_decoder_select="mdct"
1825 opus_decoder_deps="avresample"
1826 png_decoder_deps="zlib"
1827 png_encoder_deps="zlib"
1828 png_encoder_select="dsputil"
1829 prores_decoder_select="dsputil"
1830 prores_encoder_select="dsputil"
1831 qcelp_decoder_select="lsp"
1832 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1833 ra_144_encoder_select="audio_frame_queue lpc"
1834 ralf_decoder_select="golomb"
1835 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1836 rv10_encoder_select="h263_encoder"
1837 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1838 rv20_encoder_select="h263_encoder"
1839 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1840 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1841 shorten_decoder_select="golomb"
1842 sipr_decoder_select="lsp"
1843 sp5x_decoder_select="mjpeg_decoder"
1844 svq1_decoder_select="hpeldsp"
1845 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1846 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1847 svq3_decoder_suggest="zlib"
1848 tak_decoder_select="dsputil"
1849 theora_decoder_select="vp3_decoder"
1850 thp_decoder_select="mjpeg_decoder"
1851 tiff_decoder_suggest="zlib"
1852 tiff_encoder_suggest="zlib"
1853 truehd_decoder_select="mlp_decoder"
1854 truemotion2_decoder_select="dsputil"
1855 truespeech_decoder_select="dsputil"
1856 tscc_decoder_deps="zlib"
1857 twinvq_decoder_select="mdct lsp sinewin"
1858 utvideo_decoder_select="dsputil"
1859 utvideo_encoder_select="dsputil huffman"
1860 vble_decoder_select="dsputil"
1861 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1862 vc1image_decoder_select="vc1_decoder"
1863 vorbis_decoder_select="mdct"
1864 vorbis_encoder_select="mdct"
1865 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1866 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1867 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1868 vp6a_decoder_select="vp6_decoder"
1869 vp6f_decoder_select="vp6_decoder"
1870 vp7_decoder_select="h264pred videodsp"
1871 vp8_decoder_select="h264pred videodsp"
1872 vp9_decoder_select="videodsp"
1873 webp_decoder_select="vp8_decoder"
1874 wmapro_decoder_select="mdct sinewin"
1875 wmav1_decoder_select="mdct sinewin"
1876 wmav1_encoder_select="mdct sinewin"
1877 wmav2_decoder_select="mdct sinewin"
1878 wmav2_encoder_select="mdct sinewin"
1879 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1880 wmv1_decoder_select="h263_decoder"
1881 wmv1_encoder_select="h263_encoder"
1882 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1883 wmv2_encoder_select="h263_encoder"
1884 wmv3_decoder_select="vc1_decoder"
1885 wmv3image_decoder_select="wmv3_decoder"
1886 zerocodec_decoder_deps="zlib"
1887 zlib_decoder_deps="zlib"
1888 zlib_encoder_deps="zlib"
1889 zmbv_decoder_deps="zlib"
1890 zmbv_encoder_deps="zlib"
1891
1892 # hardware accelerators
1893 dxva2_deps="dxva2api_h"
1894 vaapi_deps="va_va_h"
1895 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1896 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1897 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1898
1899 h263_vaapi_hwaccel_deps="vaapi"
1900 h263_vaapi_hwaccel_select="h263_decoder"
1901 h263_vdpau_hwaccel_deps="vdpau"
1902 h263_vdpau_hwaccel_select="h263_decoder"
1903 h264_dxva2_hwaccel_deps="dxva2"
1904 h264_dxva2_hwaccel_select="h264_decoder"
1905 h264_vaapi_hwaccel_deps="vaapi"
1906 h264_vaapi_hwaccel_select="h264_decoder"
1907 h264_vda_hwaccel_deps="vda"
1908 h264_vda_hwaccel_select="h264_decoder"
1909 h264_vda_old_hwaccel_deps="vda"
1910 h264_vda_old_hwaccel_select="h264_decoder"
1911 h264_vdpau_hwaccel_deps="vdpau"
1912 h264_vdpau_hwaccel_select="h264_decoder"
1913 mpeg1_vdpau_hwaccel_deps="vdpau"
1914 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1915 mpeg2_dxva2_hwaccel_deps="dxva2"
1916 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1917 mpeg2_vaapi_hwaccel_deps="vaapi"
1918 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1919 mpeg2_vdpau_hwaccel_deps="vdpau"
1920 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1921 mpeg4_vaapi_hwaccel_deps="vaapi"
1922 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1923 mpeg4_vdpau_hwaccel_deps="vdpau"
1924 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1925 vc1_dxva2_hwaccel_deps="dxva2"
1926 vc1_dxva2_hwaccel_select="vc1_decoder"
1927 vc1_vaapi_hwaccel_deps="vaapi"
1928 vc1_vaapi_hwaccel_select="vc1_decoder"
1929 vc1_vdpau_hwaccel_deps="vdpau"
1930 vc1_vdpau_hwaccel_select="vc1_decoder"
1931 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1932 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1933 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1934
1935 # parsers
1936 h264_parser_select="h264_decoder"
1937 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1938 mpegvideo_parser_select="error_resilience mpegvideo"
1939 vc1_parser_select="mpegvideo"
1940
1941 # external libraries
1942 libfaac_encoder_deps="libfaac"
1943 libfaac_encoder_select="audio_frame_queue"
1944 libfdk_aac_decoder_deps="libfdk_aac"
1945 libfdk_aac_encoder_deps="libfdk_aac"
1946 libfdk_aac_encoder_select="audio_frame_queue"
1947 libgsm_decoder_deps="libgsm"
1948 libgsm_encoder_deps="libgsm"
1949 libgsm_ms_decoder_deps="libgsm"
1950 libgsm_ms_encoder_deps="libgsm"
1951 libilbc_decoder_deps="libilbc"
1952 libilbc_encoder_deps="libilbc"
1953 libmp3lame_encoder_deps="libmp3lame"
1954 libmp3lame_encoder_select="audio_frame_queue"
1955 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1956 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1957 libopencore_amrnb_encoder_select="audio_frame_queue"
1958 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1959 libopenjpeg_decoder_deps="libopenjpeg"
1960 libopenjpeg_encoder_deps="libopenjpeg"
1961 libopus_decoder_deps="libopus"
1962 libopus_encoder_deps="libopus"
1963 libopus_encoder_select="audio_frame_queue"
1964 libschroedinger_decoder_deps="libschroedinger"
1965 libschroedinger_encoder_deps="libschroedinger"
1966 libspeex_decoder_deps="libspeex"
1967 libspeex_encoder_deps="libspeex"
1968 libspeex_encoder_select="audio_frame_queue"
1969 libtheora_encoder_deps="libtheora"
1970 libtwolame_encoder_deps="libtwolame"
1971 libvo_aacenc_encoder_deps="libvo_aacenc"
1972 libvo_aacenc_encoder_select="audio_frame_queue"
1973 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1974 libvorbis_encoder_deps="libvorbis"
1975 libvorbis_encoder_select="audio_frame_queue"
1976 libvpx_vp8_decoder_deps="libvpx"
1977 libvpx_vp8_encoder_deps="libvpx"
1978 libvpx_vp9_decoder_deps="libvpx"
1979 libvpx_vp9_encoder_deps="libvpx"
1980 libwavpack_encoder_deps="libwavpack"
1981 libwebp_encoder_deps="libwebp"
1982 libx264_encoder_deps="libx264"
1983 libx265_encoder_deps="libx265"
1984 libxavs_encoder_deps="libxavs"
1985 libxvid_encoder_deps="libxvid"
1986
1987 # demuxers / muxers
1988 ac3_demuxer_select="ac3_parser"
1989 asf_demuxer_select="riffdec"
1990 asf_muxer_select="riffenc"
1991 asf_stream_muxer_select="asf_muxer"
1992 avi_demuxer_select="riffdec"
1993 avi_muxer_select="riffenc"
1994 avisynth_demuxer_deps="avisynth"
1995 avisynth_demuxer_select="riffdec"
1996 caf_demuxer_select="riffdec"
1997 dirac_demuxer_select="dirac_parser"
1998 dxa_demuxer_select="riffdec"
1999 eac3_demuxer_select="ac3_parser"
2000 f4v_muxer_select="mov_muxer"
2001 flac_demuxer_select="flac_parser"
2002 hds_muxer_select="flv_muxer"
2003 hls_muxer_select="mpegts_muxer"
2004 ipod_muxer_select="mov_muxer"
2005 ismv_muxer_select="mov_muxer"
2006 matroska_audio_muxer_select="matroska_muxer"
2007 matroska_demuxer_select="riffdec"
2008 matroska_demuxer_suggest="bzlib lzo zlib"
2009 matroska_muxer_select="riffenc"
2010 mmf_muxer_select="riffenc"
2011 mov_demuxer_select="riffdec"
2012 mov_demuxer_suggest="zlib"
2013 mov_muxer_select="riffenc rtpenc_chain"
2014 mp3_demuxer_select="mpegaudio_parser"
2015 mp4_muxer_select="mov_muxer"
2016 mpegts_muxer_select="adts_muxer latm_muxer"
2017 mpegtsraw_demuxer_select="mpegts_demuxer"
2018 mxf_d10_muxer_select="mxf_muxer"
2019 nut_muxer_select="riffenc"
2020 nuv_demuxer_select="riffdec"
2021 ogg_demuxer_select="golomb"
2022 psp_muxer_select="mov_muxer"
2023 rtp_demuxer_select="sdp_demuxer"
2024 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2025 rtsp_demuxer_select="http_protocol rtpdec"
2026 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2027 sap_demuxer_select="sdp_demuxer"
2028 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2029 sdp_demuxer_select="rtpdec"
2030 smoothstreaming_muxer_select="ismv_muxer"
2031 spdif_muxer_select="aac_parser"
2032 tak_demuxer_select="tak_parser"
2033 tg2_muxer_select="mov_muxer"
2034 tgp_muxer_select="mov_muxer"
2035 w64_demuxer_select="wav_demuxer"
2036 wav_demuxer_select="riffdec"
2037 wav_muxer_select="riffenc"
2038 webm_muxer_select="riffenc"
2039 wtv_demuxer_select="riffdec"
2040 xmv_demuxer_select="riffdec"
2041 xwma_demuxer_select="riffdec"
2042
2043 # indevs / outdevs
2044 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2045 alsa_outdev_deps="alsa_asoundlib_h"
2046 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2047 dv1394_indev_deps="dv1394"
2048 dv1394_indev_select="dv_demuxer"
2049 fbdev_indev_deps="linux_fb_h"
2050 jack_indev_deps="jack_jack_h pthreads"
2051 libcdio_indev_deps="libcdio"
2052 libdc1394_indev_deps="libdc1394"
2053 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2054 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2055 pulse_indev_deps="libpulse"
2056 sndio_indev_deps="sndio_h"
2057 sndio_outdev_deps="sndio_h"
2058 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2059 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2060 vfwcap_indev_extralibs="-lavicap32"
2061 x11grab_indev_deps="x11grab XShmCreateImage"
2062
2063 # protocols
2064 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2065 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2066 ffrtmpcrypt_protocol_select="tcp_protocol"
2067 ffrtmphttp_protocol_deps="!librtmp_protocol"
2068 ffrtmphttp_protocol_select="http_protocol"
2069 gopher_protocol_select="network"
2070 http_protocol_select="tcp_protocol"
2071 httpproxy_protocol_select="tcp_protocol"
2072 https_protocol_select="tls_protocol"
2073 librtmp_protocol_deps="librtmp"
2074 librtmpe_protocol_deps="librtmp"
2075 librtmps_protocol_deps="librtmp"
2076 librtmpt_protocol_deps="librtmp"
2077 librtmpte_protocol_deps="librtmp"
2078 mmsh_protocol_select="http_protocol"
2079 mmst_protocol_select="network"
2080 rtmp_protocol_deps="!librtmp_protocol"
2081 rtmp_protocol_select="tcp_protocol"
2082 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2083 rtmps_protocol_deps="!librtmp_protocol"
2084 rtmps_protocol_select="tls_protocol"
2085 rtmpt_protocol_select="ffrtmphttp_protocol"
2086 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2087 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2088 rtp_protocol_select="udp_protocol"
2089 sctp_protocol_deps="struct_sctp_event_subscribe"
2090 sctp_protocol_select="network"
2091 srtp_protocol_select="rtp_protocol"
2092 tcp_protocol_select="network"
2093 tls_protocol_deps_any="openssl gnutls"
2094 tls_protocol_select="tcp_protocol"
2095 udp_protocol_select="network"
2096 unix_protocol_deps="sys_un_h"
2097 unix_protocol_select="network"
2098
2099 # filters
2100 blackframe_filter_deps="gpl"
2101 boxblur_filter_deps="gpl"
2102 bs2b_filter_deps="libbs2b"
2103 cropdetect_filter_deps="gpl"
2104 delogo_filter_deps="gpl"
2105 drawtext_filter_deps="libfreetype"
2106 frei0r_filter_deps="frei0r dlopen"
2107 frei0r_filter_extralibs='$ldl'
2108 frei0r_src_filter_deps="frei0r dlopen"
2109 frei0r_src_filter_extralibs='$ldl'
2110 hqdn3d_filter_deps="gpl"
2111 interlace_filter_deps="gpl"
2112 ocv_filter_deps="libopencv"
2113 resample_filter_deps="avresample"
2114 scale_filter_deps="swscale"
2115
2116 # examples
2117 avcodec_example_deps="avcodec avutil"
2118 filter_audio_example_deps="avfilter avutil"
2119 metadata_example_deps="avformat avutil"
2120 output_example_deps="avcodec avformat avutil swscale"
2121 transcode_aac_example_deps="avcodec avformat avresample"
2122
2123 # libraries, in linking order
2124 avcodec_deps="avutil"
2125 avdevice_deps="avformat avcodec avutil"
2126 avfilter_deps="avutil"
2127 avformat_deps="avcodec avutil"
2128 avresample_deps="avutil"
2129 swscale_deps="avutil"
2130
2131 # programs
2132 avconv_deps="avcodec avfilter avformat avresample swscale"
2133 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2134                fps_filter null_filter resample_filter scale_filter
2135                setpts_filter trim_filter"
2136 avplay_deps="avcodec avformat avresample swscale sdl"
2137 avplay_libs='$sdl_libs'
2138 avplay_select="rdft"
2139 avprobe_deps="avcodec avformat"
2140 avserver_deps="avformat fork !shared"
2141 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2142
2143 # documentation
2144 pod2man_deps="doc"
2145 texi2html_deps="doc"
2146
2147 # default parameters
2148
2149 logfile="config.log"
2150
2151 # installation paths
2152 prefix_default="/usr/local"
2153 bindir_default='${prefix}/bin'
2154 datadir_default='${prefix}/share/avconv'
2155 docdir_default='${prefix}/share/doc/libav'
2156 incdir_default='${prefix}/include'
2157 libdir_default='${prefix}/lib'
2158 mandir_default='${prefix}/share/man'
2159 shlibdir_default="$libdir_default"
2160
2161 # toolchain
2162 ar_default="ar"
2163 cc_default="gcc"
2164 host_cc_default="gcc"
2165 cp_f="cp -f"
2166 ln_s="ln -s -f"
2167 nm_default="nm -g"
2168 objformat="elf"
2169 pkg_config_default=pkg-config
2170 ranlib="ranlib"
2171 strip="strip"
2172 yasmexe="yasm"
2173
2174 nogas=":"
2175
2176 # machine
2177 arch_default=$(uname -m)
2178 cpu="generic"
2179
2180 # OS
2181 target_os_default=$(tolower $(uname -s))
2182 host_os=$target_os_default
2183
2184 # configurable options
2185 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2186
2187 enable asm
2188 enable debug
2189 enable doc
2190 enable optimizations
2191 enable safe_bitstream_reader
2192 enable static
2193 enable swscale_alpha
2194
2195 # By default, enable only those hwaccels that have no external dependencies.
2196 enable dxva2 vdpau
2197
2198 # build settings
2199 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2200 LIBPREF="lib"
2201 LIBSUF=".a"
2202 FULLNAME='$(NAME)$(BUILDSUF)'
2203 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2204 SLIBPREF="lib"
2205 SLIBSUF=".so"
2206 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2207 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2208 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2209 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2210 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2211 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2212
2213 asflags_filter=echo
2214 cflags_filter=echo
2215 ldflags_filter=echo
2216
2217 AS_C='-c'
2218 AS_O='-o $@'
2219 CC_C='-c'
2220 CC_E='-E -o $@'
2221 CC_O='-o $@'
2222 LD_O='-o $@'
2223 LD_LIB='-l%'
2224 LD_PATH='-L'
2225 HOSTCC_C='-c'
2226 HOSTCC_E='-E -o $@'
2227 HOSTCC_O='-o $@'
2228 HOSTLD_O='-o $@'
2229
2230 host_libs='-lm'
2231 host_cflags_filter=echo
2232 host_ldflags_filter=echo
2233
2234 target_path='$(CURDIR)'
2235
2236 # since the object filename is not given with the -MM flag, the compiler
2237 # is only able to print the basename, and we must add the path ourselves
2238 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2239 DEPFLAGS='-MM'
2240
2241 # find source path
2242 if test -f configure; then
2243     source_path=.
2244 else
2245     source_path=$(cd $(dirname "$0"); pwd)
2246     echo "$source_path" | grep -q '[[:blank:]]' &&
2247         die "Out of tree builds are impossible with whitespace in source path."
2248     test -e "$source_path/config.h" &&
2249         die "Out of tree builds are impossible with config.h in source dir."
2250 fi
2251
2252 for v in "$@"; do
2253     r=${v#*=}
2254     l=${v%"$r"}
2255     r=$(sh_quote "$r")
2256     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2257 done
2258
2259 find_things(){
2260     thing=$1
2261     pattern=$2
2262     file=$source_path/$3
2263     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2264 }
2265
2266 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2267 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2268 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2269 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2270 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2271 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2272 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2273 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2274 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2275 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2276 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2277
2278 ALL_COMPONENTS="
2279     $BSF_LIST
2280     $DECODER_LIST
2281     $DEMUXER_LIST
2282     $ENCODER_LIST
2283     $FILTER_LIST
2284     $HWACCEL_LIST
2285     $INDEV_LIST
2286     $MUXER_LIST
2287     $OUTDEV_LIST
2288     $PARSER_LIST
2289     $PROTOCOL_LIST
2290 "
2291
2292 for n in $COMPONENT_LIST; do
2293     v=$(toupper ${n%s})_LIST
2294     eval enable \$$v
2295     eval ${n}_if_any="\$$v"
2296 done
2297
2298 enable $ARCH_EXT_LIST
2299
2300 die_unknown(){
2301     echo "Unknown option \"$1\"."
2302     echo "See $0 --help for available options."
2303     exit 1
2304 }
2305
2306 print_3_columns() {
2307     cat | tr ' ' '\n' | sort | pr -r -3 -t
2308 }
2309
2310 show_list() {
2311     suffix=_$1
2312     shift
2313     echo $* | sed s/$suffix//g | print_3_columns
2314     exit 0
2315 }
2316
2317 rand_list(){
2318     IFS=', '
2319     set -- $*
2320     unset IFS
2321     for thing; do
2322         comp=${thing%:*}
2323         prob=${thing#$comp}
2324         prob=${prob#:}
2325         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2326         echo "prob ${prob:-0.5}"
2327         printf '%s\n' $comp
2328     done
2329 }
2330
2331 do_random(){
2332     action=$1
2333     shift
2334     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2335     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2336 }
2337
2338 for opt do
2339     optval="${opt#*=}"
2340     case "$opt" in
2341         --extra-ldflags=*)
2342             add_ldflags $optval
2343         ;;
2344         --extra-libs=*)
2345             add_extralibs $optval
2346         ;;
2347         --disable-devices)
2348             disable $INDEV_LIST $OUTDEV_LIST
2349         ;;
2350         --enable-debug=*)
2351             debuglevel="$optval"
2352         ;;
2353         --disable-programs)
2354             disable $PROGRAM_LIST
2355         ;;
2356         --disable-everything)
2357             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2358         ;;
2359         --disable-all)
2360             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2361             disable $LIBRARY_LIST $PROGRAM_LIST doc
2362         ;;
2363         --enable-random|--disable-random)
2364             action=${opt%%-random}
2365             do_random ${action#--} $COMPONENT_LIST
2366         ;;
2367         --enable-random=*|--disable-random=*)
2368             action=${opt%%-random=*}
2369             do_random ${action#--} $optval
2370         ;;
2371         --enable-*=*|--disable-*=*)
2372             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2373             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2374             eval list=\$$(toupper $thing)_LIST
2375             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2376             $action $(filter "$name" $list)
2377         ;;
2378         --enable-?*|--disable-?*)
2379             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2380             if is_in $option $COMPONENT_LIST; then
2381                 test $action = disable && action=unset
2382                 eval $action \$$(toupper ${option%s})_LIST
2383             elif is_in $option $CMDLINE_SELECT; then
2384                 $action $option
2385             else
2386                 die_unknown $opt
2387             fi
2388         ;;
2389         --list-*)
2390             NAME="${opt#--list-}"
2391             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2392             NAME=${NAME%s}
2393             eval show_list $NAME \$$(toupper $NAME)_LIST
2394         ;;
2395         --help|-h) show_help
2396         ;;
2397         *)
2398             optname="${opt%%=*}"
2399             optname="${optname#--}"
2400             optname=$(echo "$optname" | sed 's/-/_/g')
2401             if is_in $optname $CMDLINE_SET; then
2402                 eval $optname='$optval'
2403             elif is_in $optname $CMDLINE_APPEND; then
2404                 append $optname "$optval"
2405             else
2406                 die_unknown $opt
2407             fi
2408         ;;
2409     esac
2410 done
2411
2412 disabled logging && logfile=/dev/null
2413
2414 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2415 set >> $logfile
2416
2417 test -n "$cross_prefix" && enable cross_compile
2418
2419 if enabled cross_compile; then
2420     test -n "$arch" && test -n "$target_os" ||
2421         die "Must specify target arch and OS when cross-compiling"
2422 fi
2423
2424 ar_default="${cross_prefix}${ar_default}"
2425 cc_default="${cross_prefix}${cc_default}"
2426 nm_default="${cross_prefix}${nm_default}"
2427 pkg_config_default="${cross_prefix}${pkg_config_default}"
2428 ranlib="${cross_prefix}${ranlib}"
2429 strip="${cross_prefix}${strip}"
2430
2431 sysinclude_default="${sysroot}/usr/include"
2432
2433 case "$toolchain" in
2434     clang-asan)
2435         cc_default="clang"
2436         add_cflags  -fsanitize=address
2437         add_ldflags -fsanitize=address
2438     ;;
2439     clang-tsan)
2440         cc_default="clang"
2441         add_cflags  -fsanitize=thread -pie
2442         add_ldflags -fsanitize=thread -pie
2443     ;;
2444     clang-usan)
2445         cc_default="clang"
2446         add_cflags  -fsanitize=undefined
2447         add_ldflags -fsanitize=undefined
2448     ;;
2449     gcc-asan)
2450         cc_default="gcc"
2451         add_cflags  -fsanitize=address
2452         add_ldflags -fsanitize=address
2453     ;;
2454     gcc-tsan)
2455         cc_default="gcc"
2456         add_cflags  -fsanitize=thread -pie -fPIC
2457         add_ldflags -fsanitize=thread -pie -fPIC
2458     ;;
2459     gcc-usan)
2460         cc_default="gcc"
2461         add_cflags  -fsanitize=undefined
2462         add_ldflags -fsanitize=undefined
2463     ;;
2464     valgrind-massif)
2465         target_exec_default="valgrind"
2466         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2467     ;;
2468     valgrind-memcheck)
2469         target_exec_default="valgrind"
2470         target_exec_args="--track-origins=yes --leak-check=full"
2471     ;;
2472     msvc)
2473         # Check whether the current MSVC version needs the C99 converter.
2474         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2475         # support enough of C99 to build libav. Default to the new
2476         # behaviour if the regexp was unable to match anything, since this
2477         # successfully parses the version number of existing supported
2478         # versions that require the converter (MSVC 2010 and 2012).
2479         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2480         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2481             cc_default="cl"
2482         else
2483             cc_default="c99wrap cl"
2484         fi
2485         ld_default="link"
2486         nm_default="dumpbin -symbols"
2487         ar_default="lib"
2488         target_os_default="win32"
2489         # Use a relative path for TMPDIR. This makes sure all the
2490         # ffconf temp files are written with a relative path, avoiding
2491         # issues with msys/win32 path conversion for MSVC parameters
2492         # such as -Fo<file> or -out:<file>.
2493         TMPDIR=.
2494     ;;
2495     icl)
2496         cc_default="icl"
2497         ld_default="xilink"
2498         nm_default="dumpbin -symbols"
2499         ar_default="xilib"
2500         target_os_default="win32"
2501         TMPDIR=.
2502     ;;
2503     gcov)
2504         add_cflags  -fprofile-arcs -ftest-coverage
2505         add_ldflags -fprofile-arcs -ftest-coverage
2506     ;;
2507     hardened)
2508         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2509         add_ldflags -Wl,-z,relro -Wl,-z,now
2510     ;;
2511     ?*)
2512         die "Unknown toolchain $toolchain"
2513     ;;
2514 esac
2515
2516 set_default arch cc pkg_config sysinclude target_exec target_os
2517 enabled cross_compile || host_cc_default=$cc
2518 set_default host_cc
2519
2520 if ! $pkg_config --version >/dev/null 2>&1; then
2521     warn "$pkg_config not found, library detection may fail."
2522     pkg_config=false
2523 fi
2524
2525 exesuf() {
2526     case $1 in
2527         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2528     esac
2529 }
2530
2531 EXESUF=$(exesuf $target_os)
2532 HOSTEXESUF=$(exesuf $host_os)
2533
2534 # set temporary file name
2535 : ${TMPDIR:=$TEMPDIR}
2536 : ${TMPDIR:=$TMP}
2537 : ${TMPDIR:=/tmp}
2538
2539 if ! check_cmd mktemp -u XXXXXX; then
2540     # simple replacement for missing mktemp
2541     # NOT SAFE FOR GENERAL USE
2542     mktemp(){
2543         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2544     }
2545 fi
2546
2547 tmpfile(){
2548     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2549         (set -C; exec > $tmp) 2>/dev/null ||
2550         die "Unable to create temporary file in $TMPDIR."
2551     append TMPFILES $tmp
2552     eval $1=$tmp
2553 }
2554
2555 trap 'rm -f -- $TMPFILES' EXIT
2556
2557 tmpfile TMPASM .asm
2558 tmpfile TMPC   .c
2559 tmpfile TMPE   $EXESUF
2560 tmpfile TMPH   .h
2561 tmpfile TMPO   .o
2562 tmpfile TMPS   .S
2563 tmpfile TMPSH  .sh
2564 tmpfile TMPV   .ver
2565
2566 unset -f mktemp
2567
2568 chmod +x $TMPE
2569
2570 # make sure we can execute files in $TMPDIR
2571 cat > $TMPSH 2>> $logfile <<EOF
2572 #! /bin/sh
2573 EOF
2574 chmod +x $TMPSH >> $logfile 2>&1
2575 if ! $TMPSH >> $logfile 2>&1; then
2576     cat <<EOF
2577 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2578 variable to another directory and make sure that it is not mounted noexec.
2579 EOF
2580     die "Sanity test failed."
2581 fi
2582
2583 ccc_flags(){
2584     for flag; do
2585         case $flag in
2586             -std=c99)           echo -c99                       ;;
2587             -mcpu=*)            echo -arch ${flag#*=}           ;;
2588             -mieee)             echo -ieee                      ;;
2589             -O*|-fast)          echo $flag                      ;;
2590             -fno-math-errno)    echo -assume nomath_errno       ;;
2591             -g)                 echo -g3                        ;;
2592             -Wall)              echo -msg_enable level2         ;;
2593             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2594             -Wl,*)              echo $flag                      ;;
2595             -f*|-W*)                                            ;;
2596             *)                  echo $flag                      ;;
2597         esac
2598    done
2599 }
2600
2601 cparser_flags(){
2602     for flag; do
2603         case $flag in
2604             -Wno-switch)             echo -Wno-switch-enum ;;
2605             -Wno-format-zero-length) ;;
2606             -Wdisabled-optimization) ;;
2607             -Wno-pointer-sign)       echo -Wno-other ;;
2608             *)                       echo $flag ;;
2609         esac
2610     done
2611 }
2612
2613 msvc_common_flags(){
2614     for flag; do
2615         case $flag in
2616             # In addition to specifying certain flags under the compiler
2617             # specific filters, they must be specified here as well or else the
2618             # generic catch all at the bottom will print the original flag.
2619             -Wall)                ;;
2620             -std=c99)             ;;
2621             # Common flags
2622             -fomit-frame-pointer) ;;
2623             -g)                   echo -Z7 ;;
2624             -fno-math-errno)      ;;
2625             -fno-common)          ;;
2626             -fno-signed-zeros)    ;;
2627             -fPIC)                ;;
2628             -mthumb)              ;;
2629             -march=*)             ;;
2630             -lz)                  echo zlib.lib ;;
2631             -lavifil32)           echo vfw32.lib ;;
2632             -lavicap32)           echo vfw32.lib user32.lib ;;
2633             -l*)                  echo ${flag#-l}.lib ;;
2634             *)                    echo $flag ;;
2635         esac
2636     done
2637 }
2638
2639 msvc_flags(){
2640     msvc_common_flags "$@"
2641     for flag; do
2642         case $flag in
2643             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2644                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2645                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2646                                        -wd4273 ;;
2647         esac
2648     done
2649 }
2650
2651 icl_flags(){
2652     msvc_common_flags "$@"
2653     for flag; do
2654         case $flag in
2655             # Despite what Intel's documentation says -Wall, which is supported
2656             # on Windows, does enable remarks so disable them here.
2657             -Wall)                echo $flag -Qdiag-disable:remark ;;
2658             -std=c99)             echo -Qstd=c99 ;;
2659         esac
2660     done
2661 }
2662
2663 pgi_flags(){
2664     for flag; do
2665         case $flag in
2666             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2667             -fomit-frame-pointer) echo -Mnoframe ;;
2668             -g)                   echo -gopt ;;
2669             *)                    echo $flag ;;
2670         esac
2671     done
2672 }
2673
2674 suncc_flags(){
2675     for flag; do
2676         case $flag in
2677             -march=*|-mcpu=*)
2678                 case "${flag#*=}" in
2679                     native)                   echo -xtarget=native       ;;
2680                     v9|niagara)               echo -xarch=sparc          ;;
2681                     ultrasparc)               echo -xarch=sparcvis       ;;
2682                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2683                     i586|pentium)             echo -xchip=pentium        ;;
2684                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2685                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2686                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2687                     pentium4*)          echo -xtarget=pentium4           ;;
2688                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2689                     *-sse3)             echo -xarch=sse3                 ;;
2690                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2691                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2692                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2693                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2694                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2695                     k8|opteron|athlon64|athlon-fx)
2696                                                echo -xarch=sse2a         ;;
2697                     athlon*)                   echo -xarch=pentium_proa  ;;
2698                 esac
2699                 ;;
2700             -std=c99)             echo -xc99              ;;
2701             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2702             -fPIC)                echo -KPIC -xcode=pic32 ;;
2703             -W*,*)                echo $flag              ;;
2704             -f*-*|-W*|-mimpure-text)                      ;;
2705             -shared)              echo -G                 ;;
2706             *)                    echo $flag              ;;
2707         esac
2708     done
2709 }
2710
2711 tms470_flags(){
2712     for flag; do
2713         case $flag in
2714             -march=*|-mcpu=*)
2715                 case "${flag#*=}" in
2716                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2717                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2718                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2719                     armv6*|arm11*)          echo -mv=6   ;;
2720                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2721                                             echo -mv=5e  ;;
2722                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2723                 esac
2724                 ;;
2725             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2726             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2727             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2728             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2729             -msoft-float)   echo --float_support=vfplib       ;;
2730             -O[0-3]|-mf=*)  echo $flag                        ;;
2731             -g)             echo -g -mn                       ;;
2732             -pds=*)         echo $flag                        ;;
2733             -D*|-I*)        echo $flag                        ;;
2734             --gcc|--abi=*)  echo $flag                        ;;
2735             -me)            echo $flag                        ;;
2736         esac
2737     done
2738 }
2739
2740 probe_cc(){
2741     pfx=$1
2742     _cc=$2
2743
2744     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2745     unset _ld_o _ldflags _ld_lib _ld_path
2746     unset _depflags _DEPCMD _DEPFLAGS
2747     _flags_filter=echo
2748
2749     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2750         _type=llvm_gcc
2751         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2752         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2753         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2754         _cflags_speed='-O3'
2755         _cflags_size='-Os'
2756     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2757         _type=gcc
2758         gcc_version=$($_cc --version | head -n1)
2759         gcc_basever=$($_cc -dumpversion)
2760         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2761         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2762         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2763         if ! $_cc -dumpversion | grep -q '^2\.'; then
2764             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2765         fi
2766         _cflags_speed='-O3'
2767         _cflags_size='-Os'
2768     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2769         _type=icc
2770         _ident=$($_cc --version | head -n1)
2771         _depflags='-MMD'
2772         _cflags_speed='-O3'
2773         _cflags_size='-Os'
2774         _cflags_noopt='-O1'
2775     elif $_cc -v 2>&1 | grep -q xlc; then
2776         _type=xlc
2777         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2778         _cflags_speed='-O5'
2779         _cflags_size='-O5 -qcompact'
2780     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2781         _type=ccc
2782         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2783         _DEPFLAGS='-M'
2784         _cflags_speed='-fast'
2785         _cflags_size='-O1'
2786         _flags_filter=ccc_flags
2787     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2788         test -d "$sysroot" || die "No valid sysroot specified."
2789         _type=armcc
2790         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2791         armcc_conf="$PWD/armcc.conf"
2792         $_cc --arm_linux_configure                 \
2793              --arm_linux_config_file="$armcc_conf" \
2794              --configure_sysroot="$sysroot"        \
2795              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2796              die "Error creating armcc configuration file."
2797         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2798         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2799         as_default="${cross_prefix}gcc"
2800         _depflags='-MMD'
2801         _cflags_speed='-O3'
2802         _cflags_size='-Os'
2803     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2804         _type=tms470
2805         _ident=$($_cc -version | head -n1 | tr -s ' ')
2806         _flags='--gcc --abi=eabi -me'
2807         _cc_e='-ppl -fe=$@'
2808         _cc_o='-fe=$@'
2809         _depflags='-ppa -ppd=$(@:.o=.d)'
2810         _cflags_speed='-O3 -mf=5'
2811         _cflags_size='-O3 -mf=2'
2812         _flags_filter=tms470_flags
2813     elif $_cc -v 2>&1 | grep -q clang; then
2814         _type=clang
2815         _ident=$($_cc --version | head -n1)
2816         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2817         _cflags_speed='-O3'
2818         _cflags_size='-Os'
2819     elif $_cc -V 2>&1 | grep -q Sun; then
2820         _type=suncc
2821         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2822         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2823         _DEPFLAGS='-xM1 -xc99'
2824         _ldflags='-std=c99'
2825         _cflags_speed='-O5'
2826         _cflags_size='-O5 -xspace'
2827         _flags_filter=suncc_flags
2828     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2829         _type=pathscale
2830         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2831         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2832         _cflags_speed='-O2'
2833         _cflags_size='-Os'
2834         _flags_filter='filter_out -Wdisabled-optimization'
2835     elif $_cc -v 2>&1 | grep -q Open64; then
2836         _type=open64
2837         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2838         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2839         _cflags_speed='-O2'
2840         _cflags_size='-Os'
2841         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2842     elif $_cc -V 2>&1 | grep -q Portland; then
2843         _type=pgi
2844         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2845         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2846         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2847         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2848         _cflags_noopt="-O1"
2849         _flags_filter=pgi_flags
2850     elif $_cc 2>&1 | grep -q Microsoft; then
2851         _type=msvc
2852         _ident=$($cc 2>&1 | head -n1)
2853         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2854         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2855         _cflags_speed="-O2"
2856         _cflags_size="-O1"
2857         if $_cc 2>&1 | grep -q Linker; then
2858             _ld_o='-out:$@'
2859         else
2860             _ld_o='-Fe$@'
2861         fi
2862         _cc_o='-Fo$@'
2863         _cc_e='-P -Fi$@'
2864         _flags_filter=msvc_flags
2865         _ld_lib='lib%.a'
2866         _ld_path='-libpath:'
2867         _flags='-nologo'
2868         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2869         if [ $pfx = hostcc ]; then
2870             append _cflags -Dsnprintf=_snprintf
2871         fi
2872     elif $_cc 2>&1 | grep -q Intel; then
2873         _type=icl
2874         _ident=$($cc 2>&1 | head -n1)
2875         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2876         # Not only is O3 broken on 13.x+ but it is slower on all previous
2877         # versions (tested) as well.
2878         _cflags_speed="-O2"
2879         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2880         if $_cc 2>&1 | grep -q Linker; then
2881             _ld_o='-out:$@'
2882         else
2883             _ld_o='-Fe$@'
2884         fi
2885         _cc_o='-Fo$@'
2886         _cc_e='-P'
2887         _flags_filter=icl_flags
2888         _ld_lib='lib%.a'
2889         _ld_path='-libpath:'
2890         # -Qdiag-error to make icl error when seeing certain unknown arguments
2891         _flags='-nologo -Qdiag-error:4044,10157'
2892         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2893         # with MSVC which enables it by default.
2894         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2895         if [ $pfx = hostcc ]; then
2896             append _cflags -Dsnprintf=_snprintf
2897         fi
2898     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2899         _type=cparser
2900         _ident=$($_cc --version | head -n1)
2901         _depflags='-MMD'
2902         _cflags_speed='-O4'
2903         _cflags_size='-O2'
2904         _flags_filter=cparser_flags
2905     fi
2906
2907     eval ${pfx}_type=\$_type
2908     eval ${pfx}_ident=\$_ident
2909 }
2910
2911 set_ccvars(){
2912     eval ${1}_C=\${_cc_c-\${${1}_C}}
2913     eval ${1}_E=\${_cc_e-\${${1}_E}}
2914     eval ${1}_O=\${_cc_o-\${${1}_O}}
2915
2916     if [ -n "$_depflags" ]; then
2917         eval ${1}_DEPFLAGS=\$_depflags
2918     else
2919         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2920         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2921         eval DEP${1}FLAGS=\$_flags
2922     fi
2923 }
2924
2925 probe_cc cc "$cc"
2926 cflags_filter=$_flags_filter
2927 cflags_speed=$_cflags_speed
2928 cflags_size=$_cflags_size
2929 cflags_noopt=$_cflags_noopt
2930 add_cflags $_flags $_cflags
2931 cc_ldflags=$_ldflags
2932 set_ccvars CC
2933
2934 probe_cc hostcc "$host_cc"
2935 host_cflags_filter=$_flags_filter
2936 add_host_cflags  $_flags $_cflags
2937 set_ccvars HOSTCC
2938
2939 test -n "$cc_type" && enable $cc_type ||
2940     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2941
2942 : ${as_default:=$cc}
2943 : ${dep_cc_default:=$cc}
2944 : ${ld_default:=$cc}
2945 : ${host_ld_default:=$host_cc}
2946 set_default ar as dep_cc ld host_ld
2947
2948 probe_cc as "$as"
2949 asflags_filter=$_flags_filter
2950 add_asflags $_flags $_cflags
2951 set_ccvars AS
2952
2953 probe_cc ld "$ld"
2954 ldflags_filter=$_flags_filter
2955 add_ldflags $_flags $_ldflags
2956 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2957 LD_O=${_ld_o-$LD_O}
2958 LD_LIB=${_ld_lib-$LD_LIB}
2959 LD_PATH=${_ld_path-$LD_PATH}
2960
2961 probe_cc hostld "$host_ld"
2962 host_ldflags_filter=$_flags_filter
2963 add_host_ldflags $_flags $_ldflags
2964 HOSTLD_O=${_ld_o-$HOSTLD_O}
2965
2966 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2967     probe_cc depcc "$dep_cc"
2968     CCDEP=${_DEPCMD:-$DEPCMD}
2969     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2970     DEPCCFLAGS=$_flags
2971 fi
2972
2973 if $ar 2>&1 | grep -q Microsoft; then
2974     arflags="-nologo"
2975     ar_o='-out:$@'
2976 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2977     arflags="rq"
2978     ar_o='$@'
2979 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2980     arflags='-Xany -r -c'
2981     ar_o='$@'
2982 else
2983     arflags="rc"
2984     ar_o='$@'
2985 fi
2986
2987 add_cflags $extra_cflags
2988 add_asflags $extra_cflags
2989
2990 if test -n "$sysroot"; then
2991     case "$cc_type" in
2992         gcc|llvm_gcc|clang)
2993             add_cppflags --sysroot="$sysroot"
2994             add_ldflags --sysroot="$sysroot"
2995         ;;
2996         tms470)
2997             add_cppflags -I"$sysinclude"
2998             add_ldflags  --sysroot="$sysroot"
2999         ;;
3000     esac
3001 fi
3002
3003 if test "$cpu" = host; then
3004     enabled cross_compile &&
3005         die "--cpu=host makes no sense when cross-compiling."
3006
3007     case "$cc_type" in
3008         gcc|llvm_gcc)
3009             check_native(){
3010                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3011                 sed -n "/cc1.*$1=/{
3012                             s/.*$1=\\([^ ]*\\).*/\\1/
3013                             p
3014                             q
3015                         }" $TMPE
3016             }
3017             cpu=$(check_native -march || check_native -mcpu)
3018         ;;
3019     esac
3020
3021     test "${cpu:-host}" = host &&
3022         die "--cpu=host not supported with compiler $cc"
3023 fi
3024
3025 # Deal with common $arch aliases
3026 case "$arch" in
3027     aarch64|arm64)
3028         arch="aarch64"
3029     ;;
3030     arm*)
3031         arch="arm"
3032     ;;
3033     mips*|IP*)
3034         arch="mips"
3035     ;;
3036     parisc*|hppa*)
3037         arch="parisc"
3038     ;;
3039     "Power Macintosh"|ppc*|powerpc*)
3040         arch="ppc"
3041     ;;
3042     s390|s390x)
3043         arch="s390"
3044     ;;
3045     sh4|sh)
3046         arch="sh4"
3047     ;;
3048     sun4u|sparc*)
3049         arch="sparc"
3050     ;;
3051     tilegx|tile-gx)
3052         arch="tilegx"
3053     ;;
3054     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3055         arch="x86"
3056     ;;
3057 esac
3058
3059 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3060 enable $arch
3061
3062 # Add processor-specific flags
3063 if enabled aarch64; then
3064
3065     case $cpu in
3066         armv*)
3067             cpuflags="-march=$cpu"
3068         ;;
3069         *)
3070             cpuflags="-mcpu=$cpu"
3071         ;;
3072     esac
3073
3074 elif enabled alpha; then
3075
3076     cpuflags="-mcpu=$cpu"
3077
3078 elif enabled arm; then
3079
3080     check_arm_arch() {
3081         check_cpp_condition stddef.h \
3082             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3083             $cpuflags
3084     }
3085
3086     probe_arm_arch() {
3087         if   check_arm_arch 4;        then echo armv4;
3088         elif check_arm_arch 4T;       then echo armv4t;
3089         elif check_arm_arch 5;        then echo armv5;
3090         elif check_arm_arch 5E;       then echo armv5e;
3091         elif check_arm_arch 5T;       then echo armv5t;
3092         elif check_arm_arch 5TE;      then echo armv5te;
3093         elif check_arm_arch 5TEJ;     then echo armv5te;
3094         elif check_arm_arch 6;        then echo armv6;
3095         elif check_arm_arch 6J;       then echo armv6j;
3096         elif check_arm_arch 6K;       then echo armv6k;
3097         elif check_arm_arch 6Z;       then echo armv6z;
3098         elif check_arm_arch 6ZK;      then echo armv6zk;
3099         elif check_arm_arch 6T2;      then echo armv6t2;
3100         elif check_arm_arch 7;        then echo armv7;
3101         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3102         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3103         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3104         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3105         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3106         fi
3107     }
3108
3109     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3110
3111     case $cpu in
3112         armv*)
3113             cpuflags="-march=$cpu"
3114             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3115         ;;
3116         *)
3117             cpuflags="-mcpu=$cpu"
3118             case $cpu in
3119                 cortex-a*)                               subarch=armv7a  ;;
3120                 cortex-r*)                               subarch=armv7r  ;;
3121                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3122                 arm11*)                                  subarch=armv6   ;;
3123                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3124                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3125                 *)                             subarch=$(probe_arm_arch) ;;
3126             esac
3127         ;;
3128     esac
3129
3130     case "$subarch" in
3131         armv5t*)    enable fast_clz                ;;
3132         armv[6-8]*) enable fast_clz fast_unaligned ;;
3133     esac
3134
3135 elif enabled avr32; then
3136
3137     case $cpu in
3138         ap7[02]0[0-2])
3139             subarch="avr32_ap"
3140             cpuflags="-mpart=$cpu"
3141         ;;
3142         ap)
3143             subarch="avr32_ap"
3144             cpuflags="-march=$cpu"
3145         ;;
3146         uc3[ab]*)
3147             subarch="avr32_uc"
3148             cpuflags="-mcpu=$cpu"
3149         ;;
3150         uc)
3151             subarch="avr32_uc"
3152             cpuflags="-march=$cpu"
3153         ;;
3154     esac
3155
3156 elif enabled bfin; then
3157
3158     cpuflags="-mcpu=$cpu"
3159
3160 elif enabled mips; then
3161
3162     cpuflags="-march=$cpu"
3163
3164 elif enabled ppc; then
3165
3166     disable ldbrx
3167
3168     case $(tolower $cpu) in
3169         601|ppc601|powerpc601)
3170             cpuflags="-mcpu=601"
3171             disable altivec
3172         ;;
3173         603*|ppc603*|powerpc603*)
3174             cpuflags="-mcpu=603"
3175             disable altivec
3176         ;;
3177         604*|ppc604*|powerpc604*)
3178             cpuflags="-mcpu=604"
3179             disable altivec
3180         ;;
3181         g3|75*|ppc75*|powerpc75*)
3182             cpuflags="-mcpu=750"
3183             disable altivec
3184         ;;
3185         g4|745*|ppc745*|powerpc745*)
3186             cpuflags="-mcpu=7450"
3187         ;;
3188         74*|ppc74*|powerpc74*)
3189             cpuflags="-mcpu=7400"
3190         ;;
3191         g5|970|ppc970|powerpc970)
3192             cpuflags="-mcpu=970"
3193         ;;
3194         power[3-7]*)
3195             cpuflags="-mcpu=$cpu"
3196         ;;
3197         cell)
3198             cpuflags="-mcpu=cell"
3199             enable ldbrx
3200         ;;
3201         e500mc)
3202             cpuflags="-mcpu=e500mc"
3203             disable altivec
3204         ;;
3205         e500v2)
3206             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3207             disable altivec
3208             disable dcbzl
3209         ;;
3210         e500)
3211             cpuflags="-mcpu=8540 -mhard-float"
3212             disable altivec
3213             disable dcbzl
3214         ;;
3215     esac
3216
3217 elif enabled sparc; then
3218
3219     case $cpu in
3220         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3221             cpuflags="-mcpu=$cpu"
3222         ;;
3223         ultrasparc*|niagara[234])
3224             cpuflags="-mcpu=$cpu"
3225         ;;
3226     esac
3227
3228 elif enabled x86; then
3229
3230     case $cpu in
3231         i[345]86|pentium)
3232             cpuflags="-march=$cpu"
3233             disable mmx
3234         ;;
3235         # targets that do NOT support nopl and conditional mov (cmov)
3236         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3237             cpuflags="-march=$cpu"
3238             disable i686
3239         ;;
3240         # targets that do support nopl and conditional mov (cmov)
3241         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3242             cpuflags="-march=$cpu"
3243             enable i686
3244             enable fast_cmov
3245         ;;
3246         # targets that do support conditional mov but on which it's slow
3247         pentium4|pentium4m|prescott|nocona)
3248             cpuflags="-march=$cpu"
3249             enable i686
3250             disable fast_cmov
3251         ;;
3252     esac
3253
3254 fi
3255
3256 if [ "$cpu" != generic ]; then
3257     add_cflags  $cpuflags
3258     add_asflags $cpuflags
3259 fi
3260
3261 # compiler sanity check
3262 check_exec <<EOF
3263 int main(void){ return 0; }
3264 EOF
3265 if test "$?" != 0; then
3266     echo "$cc is unable to create an executable file."
3267     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3268         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3269         echo "Only do this if you know what cross compiling means."
3270     fi
3271     die "C compiler test failed."
3272 fi
3273
3274 add_cppflags -D_ISOC99_SOURCE
3275 check_cflags -std=c99
3276 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3277 #include <stdlib.h>
3278 EOF
3279 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3280 #include <stdlib.h>
3281 EOF
3282
3283 add_host_cppflags -D_ISOC99_SOURCE
3284 check_host_cflags -std=c99
3285 check_host_cflags -Wall
3286 check_host_cflags -O3
3287
3288 check_64bit(){
3289     arch32=$1
3290     arch64=$2
3291     expr=$3
3292     check_code cc "" "int test[2*($expr) - 1]" &&
3293         subarch=$arch64 || subarch=$arch32
3294 }
3295
3296 case "$arch" in
3297     aarch64|alpha|ia64)
3298         spic=$shared
3299     ;;
3300     mips)
3301         check_64bit mips mips64 '_MIPS_SIM > 1'
3302         spic=$shared
3303     ;;
3304     parisc)
3305         check_64bit parisc parisc64 'sizeof(void *) > 4'
3306         spic=$shared
3307     ;;
3308     ppc)
3309         check_64bit ppc ppc64 'sizeof(void *) > 4'
3310         spic=$shared
3311     ;;
3312     s390)
3313         check_64bit s390 s390x 'sizeof(void *) > 4'
3314         spic=$shared
3315     ;;
3316     sparc)
3317         check_64bit sparc sparc64 'sizeof(void *) > 4'
3318         spic=$shared
3319     ;;
3320     x86)
3321         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3322         if test "$subarch" = "x86_64"; then
3323             spic=$shared
3324         fi
3325     ;;
3326 esac
3327
3328 enable $subarch
3329 enabled spic && enable_weak pic
3330
3331 # OS specific
3332 case $target_os in
3333     aix)
3334         SHFLAGS=-shared
3335         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3336         enabled shared && add_ldflags -Wl,-brtl
3337         ;;
3338     haiku)
3339         prefix_default="/boot/common"
3340         network_extralibs="-lnetwork"
3341         host_libs=
3342         ;;
3343     sunos)
3344         SHFLAGS='-shared -Wl,-h,$$(@F)'
3345         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3346         network_extralibs="-lsocket -lnsl"
3347         # When using suncc to build, the Solaris linker will mark
3348         # an executable with each instruction set encountered by
3349         # the Solaris assembler.  As our libraries contain their own
3350         # guards for processor-specific code, instead suppress
3351         # generation of the HWCAPS ELF section on Solaris x86 only.
3352         enabled_all suncc x86 &&
3353             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3354             add_ldflags -Wl,-M,mapfile
3355         nm_default='nm -P -g'
3356         ;;
3357     netbsd)
3358         disable symver
3359         oss_indev_extralibs="-lossaudio"
3360         oss_outdev_extralibs="-lossaudio"
3361         ;;
3362     openbsd|bitrig)
3363         disable symver
3364         SHFLAGS='-shared'
3365         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3366         SLIB_INSTALL_LINKS=
3367         oss_indev_extralibs="-lossaudio"
3368         oss_outdev_extralibs="-lossaudio"
3369         ;;
3370     dragonfly)
3371         disable symver
3372         ;;
3373     freebsd)
3374         ;;
3375     bsd/os)
3376         add_extralibs -lpoll -lgnugetopt
3377         ;;
3378     darwin)
3379         gas="gas-preprocessor.pl $cc"
3380         enabled ppc && add_asflags -force_cpusubtype_ALL
3381         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3382         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3383         add_ldflags -Wl,-dynamic,-search_paths_first
3384         SLIBSUF=".dylib"
3385         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3386         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3387         objformat="macho"
3388         enabled x86_64 && objformat="macho64"
3389         enabled_any pic shared ||
3390             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3391         ;;
3392     mingw32*)
3393         if test $target_os = "mingw32ce"; then
3394             disable network
3395         else
3396             target_os=mingw32
3397         fi
3398         LIBTARGET=i386
3399         if enabled x86_64; then
3400             LIBTARGET="i386:x86-64"
3401         elif enabled arm; then
3402             LIBTARGET=arm-wince
3403         fi
3404         check_ldflags -Wl,--nxcompat
3405         check_ldflags -Wl,--dynamicbase
3406         shlibdir_default="$bindir_default"
3407         SLIBPREF=""
3408         SLIBSUF=".dll"
3409         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3410         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3411         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3412         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3413         SLIB_INSTALL_LINKS=
3414         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3415         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3416         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3417         objformat="win32"
3418         dlltool="${cross_prefix}dlltool"
3419         ranlib=:
3420         enable dos_paths
3421         ;;
3422     win32|win64)
3423         disable symver
3424         if enabled shared; then
3425             # Link to the import library instead of the normal static library
3426             # for shared libs.
3427             LD_LIB='%.lib'
3428             # Cannot build both shared and static libs with MSVC or icl.
3429             disable static
3430         fi
3431         shlibdir_default="$bindir_default"
3432         SLIBPREF=""
3433         SLIBSUF=".dll"
3434         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3435         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3436         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3437         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3438         SLIB_INSTALL_LINKS=
3439         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3440         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3441         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3442         objformat="win32"
3443         ranlib=:
3444         enable dos_paths
3445         ;;
3446     cygwin*)
3447         target_os=cygwin
3448         shlibdir_default="$bindir_default"
3449         SLIBPREF="cyg"
3450         SLIBSUF=".dll"
3451         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3452         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3453         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3454         SLIB_INSTALL_LINKS=
3455         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3456         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3457         objformat="win32"
3458         enable dos_paths
3459         ;;
3460     *-dos|freedos|opendos)
3461         network_extralibs="-lsocket"
3462         objformat="coff"
3463         enable dos_paths
3464         add_cppflags -U__STRICT_ANSI__
3465         ;;
3466     linux)
3467         enable dv1394
3468         ;;
3469     irix*)
3470         target_os=irix
3471         ranlib="echo ignoring ranlib"
3472         ;;
3473     os/2*)
3474         ln_s="cp -f"
3475         objformat="aout"
3476         add_cppflags -D_GNU_SOURCE
3477         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3478         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3479         LIBSUF="_s.a"
3480         SLIBPREF=""
3481         SLIBSUF=".dll"
3482         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3483         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3484         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3485             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3486             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3487             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3488             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3489             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3490         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3491             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3492         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3493         enable dos_paths
3494         ;;
3495     gnu/kfreebsd)
3496         add_cppflags -D_BSD_SOURCE
3497         ;;
3498     gnu)
3499         ;;
3500     qnx)
3501         add_cppflags -D_QNX_SOURCE
3502         network_extralibs="-lsocket"
3503         ;;
3504     symbian)
3505         SLIBSUF=".dll"
3506         enable dos_paths
3507         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3508         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3509         add_ldflags -Wl,--target1-abs,--no-undefined \
3510                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3511                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3512         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3513                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3514                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3515         ;;
3516     osf1)
3517         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3518         ;;
3519     minix)
3520         ;;
3521     plan9)
3522         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3523                      -D_REENTRANT_SOURCE        \
3524                      -D_RESEARCH_SOURCE         \
3525                      -DFD_SETSIZE=96            \
3526                      -DHAVE_SOCK_OPTS
3527         add_compat strtod.o strtod=avpriv_strtod
3528         network_extralibs='-lbsd'
3529         exeobjs=compat/plan9/main.o
3530         disable avserver
3531         cp_f='cp'
3532         ;;
3533     none)
3534         ;;
3535     *)
3536         die "Unknown OS '$target_os'."
3537         ;;
3538 esac
3539
3540 # determine libc flavour
3541
3542 probe_libc(){
3543     pfx=$1
3544     pfx_no_=${pfx%_}
3545     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3546     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3547         eval ${pfx}libc_type=uclibc
3548         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3549     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3550         eval ${pfx}libc_type=glibc
3551         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3552     # MinGW headers can be installed on Cygwin, so check for newlib first.
3553     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3554         eval ${pfx}libc_type=newlib
3555         add_${pfx}cppflags -U__STRICT_ANSI__
3556     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3557     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3558         eval ${pfx}libc_type=mingw64
3559         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3560         eval test \$${pfx_no_}cc_type = "gcc" &&
3561             add_${pfx}cppflags -D__printf__=__gnu_printf__
3562     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3563          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3564         eval ${pfx}libc_type=mingw32
3565         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3566             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3567             die "ERROR: MinGW32 runtime version must be >= 3.15."
3568         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3569         eval test \$${pfx_no_}cc_type = "gcc" &&
3570             add_${pfx}cppflags -D__printf__=__gnu_printf__
3571     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3572         eval ${pfx}libc_type=msvcrt
3573         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3574         # 0x601 by default unless something else is set by the user.
3575         # This can easily lead to us detecting functions only present
3576         # in such new versions and producing binaries requiring windows 7.0.
3577         # Therefore explicitly set the default to XP unless the user has
3578         # set something else on the command line.
3579         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3580             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3581     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3582         eval ${pfx}libc_type=klibc
3583     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3584         eval ${pfx}libc_type=bionic
3585     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3586         eval ${pfx}libc_type=solaris
3587         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3588     fi
3589 }
3590
3591 probe_libc
3592 test -n "$libc_type" && enable libc_$libc_type
3593 probe_libc host_
3594 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3595
3596 case $libc_type in
3597     bionic)
3598         add_compat strtod.o strtod=avpriv_strtod
3599         ;;
3600     msvcrt)
3601         add_compat strtod.o strtod=avpriv_strtod
3602         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3603                                      _snprintf=avpriv_snprintf  \
3604                                      vsnprintf=avpriv_vsnprintf
3605         ;;
3606 esac
3607
3608 # hacks for compiler/libc/os combinations
3609
3610 if enabled_all tms470 libc_glibc; then
3611     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3612     add_cppflags -D__USER_LABEL_PREFIX__=
3613     add_cppflags -D__builtin_memset=memset
3614     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3615     add_cflags   -pds=48    # incompatible redefinition of macro
3616 fi
3617
3618 if enabled_all ccc libc_glibc; then
3619     add_ldflags -Wl,-z,now  # calls to libots crash without this
3620 fi
3621
3622 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3623     add_cppflags '-I\$(SRC_PATH)/compat/float'
3624
3625 esc(){
3626     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3627 }
3628
3629 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3630
3631 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3632
3633 set_default $PATHS_LIST
3634 set_default nm
3635
3636 # we need to build at least one lib type
3637 if ! enabled_any static shared; then
3638     cat <<EOF
3639 At least one library type must be built.
3640 Specify --enable-static to build the static libraries or --enable-shared to
3641 build the shared libraries as well. To only build the shared libraries specify
3642 --disable-static in addition to --enable-shared.
3643 EOF
3644     exit 1;
3645 fi
3646
3647 die_license_disabled() {
3648     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3649 }
3650
3651 die_license_disabled gpl libcdio
3652 die_license_disabled gpl libx264
3653 die_license_disabled gpl libx265
3654 die_license_disabled gpl libxavs
3655 die_license_disabled gpl libxvid
3656 die_license_disabled gpl x11grab
3657
3658 die_license_disabled nonfree libfaac
3659 die_license_disabled nonfree libfdk_aac
3660 die_license_disabled nonfree openssl
3661
3662 die_license_disabled version3 libopencore_amrnb
3663 die_license_disabled version3 libopencore_amrwb
3664 die_license_disabled version3 libvo_aacenc
3665 die_license_disabled version3 libvo_amrwbenc
3666
3667 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3668
3669 disabled optimizations || check_cflags -fomit-frame-pointer
3670
3671 enable_weak_pic() {
3672     disabled pic && return
3673     enable pic
3674     add_cppflags -DPIC
3675     case "$target_os" in
3676     mingw*|cygwin*)
3677         ;;
3678     *)
3679         add_cflags -fPIC
3680         ;;
3681     esac
3682     add_asflags  -fPIC
3683 }
3684
3685 enabled pic && enable_weak_pic
3686
3687 check_cc <<EOF || die "Symbol mangling check failed."
3688 int ff_extern;
3689 EOF
3690 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3691 extern_prefix=${sym%%ff_extern*}
3692
3693 check_cc <<EOF && enable_weak inline_asm
3694 void foo(void) { __asm__ volatile ("" ::); }
3695 EOF
3696
3697 _restrict=
3698 for restrict_keyword in restrict __restrict__ __restrict; do
3699     check_cc <<EOF && _restrict=$restrict_keyword && break
3700 void foo(char * $restrict_keyword p);
3701 EOF
3702 done
3703
3704 check_cc <<EOF && enable pragma_deprecated
3705 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3706 EOF
3707
3708 check_cc <<EOF && enable attribute_packed
3709 struct { int x; } __attribute__((packed)) x;
3710 EOF
3711
3712 check_cc <<EOF && enable attribute_may_alias
3713 union { int x; } __attribute__((may_alias)) x;
3714 EOF
3715
3716 check_cc <<EOF || die "endian test failed"
3717 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3718 EOF
3719 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3720
3721 check_inline_asm inline_asm_labels '"1:\n"'
3722
3723 if enabled aarch64; then
3724     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3725     # internal assembler in clang 3.3 does not support this instruction
3726     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3727     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3728
3729     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3730
3731 elif enabled alpha; then
3732
3733     check_cflags -mieee
3734
3735 elif enabled arm; then
3736
3737     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3738     enabled thumb && check_cflags -mthumb || check_cflags -marm
3739     nogas=die
3740
3741     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3742         enable vfp_args
3743     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3744         case "${cross_prefix:-$cc}" in
3745             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3746             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3747 __asm__ (".eabi_attribute 28, 1");
3748 int main(void) { return 0; }
3749 EOF
3750         esac
3751         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3752     fi
3753
3754     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3755     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3756     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3757     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3758     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3759     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3760
3761     [ $target_os = linux ] ||
3762         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3763             $ARCH_EXT_LIST_ARM
3764
3765     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3766
3767     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3768
3769 elif enabled mips; then
3770
3771     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3772
3773 elif enabled parisc; then
3774
3775     if enabled gcc; then
3776         case $($cc -dumpversion) in
3777             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3778         esac
3779     fi
3780
3781 elif enabled ppc; then
3782
3783     enable local_aligned_8 local_aligned_16
3784
3785     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3786     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3787     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3788     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3789
3790     # AltiVec flags: The FSF version of GCC differs from the Apple version
3791     if enabled altivec; then
3792         nogas=warn
3793         check_cflags -maltivec -mabi=altivec &&
3794         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3795         check_cflags -faltivec
3796
3797         # check if our compiler supports Motorola AltiVec C API
3798         check_cc <<EOF || disable altivec
3799 $inc_altivec_h
3800 int main(void) {
3801     vector signed int v1 = (vector signed int) { 0 };
3802     vector signed int v2 = (vector signed int) { 1 };
3803     v1 = vec_add(v1, v2);
3804     return 0;
3805 }
3806 EOF
3807
3808         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3809     fi
3810
3811 elif enabled x86; then
3812
3813     check_builtin rdtsc    intrin.h   "__rdtsc()"
3814     check_builtin mm_empty mmintrin.h "_mm_empty()"
3815
3816     enable local_aligned_8 local_aligned_16
3817
3818     # check whether EBP is available on x86
3819     # As 'i' is stored on the stack, this program will crash
3820     # if the base pointer is used to access it because the
3821     # base pointer is cleared in the inline assembly code.
3822     check_exec_crash <<EOF && enable ebp_available
3823 volatile int i=0;
3824 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3825 return i;
3826 EOF
3827
3828     # check whether EBX is available on x86
3829     check_inline_asm ebx_available '""::"b"(0)' &&
3830         check_inline_asm ebx_available '"":::"%ebx"'
3831
3832     # check whether xmm clobbers are supported
3833     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3834
3835     # check whether binutils is new enough to compile SSSE3/MMXEXT
3836     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3837     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3838
3839     if ! disabled_any asm mmx yasm; then
3840         if check_cmd $yasmexe --version; then
3841             enabled x86_64 && yasm_extra="-m amd64"
3842             yasm_debug="-g dwarf2"
3843         elif check_cmd nasm -v; then
3844             yasmexe=nasm
3845             yasm_debug="-g -F dwarf"
3846             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3847         fi
3848
3849         YASMFLAGS="-f $objformat $yasm_extra"
3850         enabled pic               && append YASMFLAGS "-DPIC"
3851         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3852         case "$objformat" in
3853             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3854         esac
3855
3856         check_yasm "movbe ecx, [5]" && enable yasm ||
3857             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3858         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3859         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3860         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3861         check_yasm "CPU amdnop" || disable cpunop
3862     fi
3863
3864     case "$cpu" in
3865         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3866             disable fast_clz
3867         ;;
3868     esac
3869
3870 fi
3871
3872 if enabled asm; then
3873     as=${gas:=$as}
3874     check_as <<EOF && enable gnu_as || \
3875         $nogas "GNU assembler not found, install gas-preprocessor"
3876 .macro m n
3877 \n: .int 0
3878 .endm
3879 m x
3880 EOF
3881 fi
3882
3883 check_ldflags -Wl,--as-needed
3884
3885 if check_func dlopen; then
3886     ldl=
3887 elif check_func dlopen -ldl; then
3888     ldl=-ldl
3889 fi
3890
3891 if ! disabled network; then
3892     check_func getaddrinfo $network_extralibs
3893     check_func getservbyport $network_extralibs
3894     check_func inet_aton $network_extralibs
3895
3896     check_type netdb.h "struct addrinfo"
3897     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3898     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3899     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3900     check_type poll.h "struct pollfd"
3901     check_type netinet/sctp.h "struct sctp_event_subscribe"
3902     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3903     check_type netinet/in.h "struct sockaddr_in6"
3904     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3905     check_type "sys/types.h sys/socket.h" socklen_t
3906
3907     # Prefer arpa/inet.h over winsock2
3908     if check_header arpa/inet.h ; then
3909         check_func closesocket
3910     elif check_header winsock2.h ; then
3911         check_func_headers winsock2.h closesocket -lws2 &&
3912             network_extralibs="-lws2" ||
3913         { check_func_headers winsock2.h closesocket -lws2_32 &&
3914             network_extralibs="-lws2_32"; } || disable winsock2_h network
3915         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3916
3917         check_type ws2tcpip.h socklen_t
3918         check_type ws2tcpip.h "struct addrinfo"
3919         check_type ws2tcpip.h "struct group_source_req"
3920         check_type ws2tcpip.h "struct ip_mreq_source"
3921         check_type ws2tcpip.h "struct ipv6_mreq"
3922         check_type winsock2.h "struct pollfd"
3923         check_struct winsock2.h "struct sockaddr" sa_len
3924         check_type ws2tcpip.h "struct sockaddr_in6"
3925         check_type ws2tcpip.h "struct sockaddr_storage"
3926     else
3927         disable network
3928     fi
3929 fi
3930
3931 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3932 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3933 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3934 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3935
3936 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3937 check_func  ${malloc_prefix}memalign            && enable memalign
3938 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3939
3940 check_func  fcntl
3941 check_func  fork
3942 check_func  gethrtime
3943 check_func  getopt
3944 check_func  getrusage
3945 check_func  gettimeofday
3946 check_func  isatty
3947 check_func  localtime_r
3948 check_func  mach_absolute_time
3949 check_func  mkstemp
3950 check_func  mmap
3951 check_func  mprotect
3952 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3953 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3954 check_func  sched_getaffinity
3955 check_func  setrlimit
3956 check_func  strerror_r
3957 check_func  strptime
3958 check_func  sysconf
3959 check_func  sysctl
3960 check_func  usleep
3961
3962 check_func_headers io.h setmode
3963 check_func_headers stdlib.h getenv
3964
3965 check_func_headers windows.h CoTaskMemFree -lole32
3966 check_func_headers windows.h GetProcessAffinityMask
3967 check_func_headers windows.h GetProcessTimes
3968 check_func_headers windows.h GetSystemTimeAsFileTime
3969 check_func_headers windows.h MapViewOfFile
3970 check_func_headers windows.h SetConsoleTextAttribute
3971 check_func_headers windows.h Sleep
3972 check_func_headers windows.h VirtualAlloc
3973
3974 check_header direct.h
3975 check_header dlfcn.h
3976 check_header dxva.h
3977 check_header dxva2api.h
3978 check_header io.h
3979 check_header mach/mach_time.h
3980 check_header malloc.h
3981 check_header poll.h
3982 check_header sys/mman.h
3983 check_header sys/param.h
3984 check_header sys/resource.h
3985 check_header sys/select.h
3986 check_header sys/time.h
3987 check_header sys/un.h
3988 check_header unistd.h
3989 check_header vdpau/vdpau.h
3990 check_header vdpau/vdpau_x11.h
3991 check_header VideoDecodeAcceleration/VDADecoder.h
3992 check_header windows.h
3993 check_header X11/extensions/XvMClib.h
3994
3995 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3996 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3997 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3998
3999 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4000
4001 if ! disabled w32threads && ! enabled pthreads; then
4002     check_func_headers "windows.h process.h" _beginthreadex &&
4003         enable w32threads || disable w32threads
4004 fi
4005
4006 # check for some common methods of building with pthread support
4007 # do this before the optional library checks as some of them require pthreads
4008 if ! disabled pthreads && ! enabled w32threads; then
4009     enable pthreads
4010     if check_func pthread_join -pthread; then
4011         add_cflags -pthread
4012         add_extralibs -pthread
4013     elif check_func pthread_join -pthreads; then
4014         add_cflags -pthreads
4015         add_extralibs -pthreads
4016     elif check_func pthread_join -lpthreadGC2; then
4017         add_extralibs -lpthreadGC2
4018     elif check_lib pthread.h pthread_join -lpthread; then
4019         :
4020     elif ! check_func pthread_join; then
4021         disable pthreads
4022     fi
4023 fi
4024
4025 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4026 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4027
4028 check_lib math.h sin -lm && LIBM="-lm"
4029 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4030
4031 atan2f_args=2
4032 ldexpf_args=2
4033 powf_args=2
4034
4035 for func in $MATH_FUNCS; do
4036     eval check_mathfunc $func \${${func}_args:-1}
4037 done
4038
4039 # these are off by default, so fail if requested and not available
4040 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4041                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4042                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4043 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4044 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4045 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4046 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4047 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4048 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4049 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4050 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4051                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4052                                done || die "ERROR: libgsm not found"; }
4053 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4054 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4055 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4056 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4057 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4058 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4059                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4060 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4061 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4062 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4063 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4064 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4065 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4066 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4067 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4068 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4069 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4070 enabled libvpx            && {
4071     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4072                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4073     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4074                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4075     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4076     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4077 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4078 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4079 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4080                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4081                                die "ERROR: libx264 version must be >= 0.118."; }
4082 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4083                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4084                                die "ERROR: libx265 version must be >= 13."; }
4085 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4086 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4087 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4088                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4089                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4090                                die "ERROR: openssl not found"; }
4091
4092 if enabled gnutls; then
4093     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4094     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4095 fi
4096
4097 # libdc1394 check
4098 if enabled libdc1394; then
4099     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4100         enable libdc1394_2; } ||
4101     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4102         enable libdc1394_1; } ||
4103     die "ERROR: No version of libdc1394 found "
4104 fi
4105
4106 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4107     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4108     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4109     enable sdl
4110 fi
4111
4112 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4113 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4114
4115 check_header linux/fb.h
4116 check_header linux/videodev2.h
4117 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4118
4119 check_header sys/videoio.h
4120
4121 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4122 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4123 # w32api 3.12 had it defined wrong
4124 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4125
4126 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4127 { check_header dev/bktr/ioctl_meteor.h &&
4128   check_header dev/bktr/ioctl_bt848.h; } ||
4129 { check_header machine/ioctl_meteor.h &&
4130   check_header machine/ioctl_bt848.h; } ||
4131 { check_header dev/video/meteor/ioctl_meteor.h &&
4132   check_header dev/video/bktr/ioctl_bt848.h; } ||
4133 check_header dev/ic/bt8xx.h
4134
4135 check_header sndio.h
4136 check_header sys/soundcard.h
4137 check_header soundcard.h
4138
4139 enabled_any alsa_indev alsa_outdev &&
4140     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4141
4142 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4143     check_func jack_port_get_latency_range -ljack
4144
4145 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4146
4147 if enabled libcdio; then
4148     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4149     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4150 fi
4151
4152 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4153
4154 enabled x11grab                                           &&
4155 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4156 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4157 { enabled xlib || die "ERROR: Xlib not found"; }
4158
4159 enabled vdpau &&
4160     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4161     disable vdpau
4162
4163 enabled vdpau && enabled xlib &&
4164     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4165     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4166     enable vdpau_x11
4167
4168 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4169
4170 # add some useful compiler flags if supported
4171 check_cflags -Wdeclaration-after-statement
4172 check_cflags -Wall
4173 check_cflags -Wdisabled-optimization
4174 check_cflags -Wpointer-arith
4175 check_cflags -Wredundant-decls
4176 check_cflags -Wcast-qual
4177 check_cflags -Wwrite-strings
4178 check_cflags -Wtype-limits
4179 check_cflags -Wundef
4180 check_cflags -Wmissing-prototypes
4181 check_cflags -Wstrict-prototypes
4182 enabled extra_warnings && check_cflags -Winline
4183
4184 check_disable_warning(){
4185     warning_flag=-W${1#-Wno-}
4186     test_cflags $warning_flag && add_cflags $1
4187 }
4188
4189 check_disable_warning -Wno-parentheses
4190 check_disable_warning -Wno-switch
4191 check_disable_warning -Wno-format-zero-length
4192 check_disable_warning -Wno-pointer-sign
4193
4194 # add some linker flags
4195 check_ldflags -Wl,--warn-common
4196 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4197 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4198
4199 # add some strip flags
4200 # -wN '..@*' is more selective than -x, but not available everywhere.
4201 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4202
4203 enabled neon_clobber_test &&
4204     check_ldflags -Wl,--wrap,avcodec_open2              \
4205                   -Wl,--wrap,avcodec_decode_audio4      \
4206                   -Wl,--wrap,avcodec_decode_video2      \
4207                   -Wl,--wrap,avcodec_decode_subtitle2   \
4208                   -Wl,--wrap,avcodec_encode_audio2      \
4209                   -Wl,--wrap,avcodec_encode_video2      \
4210                   -Wl,--wrap,avcodec_encode_subtitle    \
4211                   -Wl,--wrap,avresample_convert ||
4212     disable neon_clobber_test
4213
4214 enabled xmm_clobber_test &&
4215     check_ldflags -Wl,--wrap,avcodec_open2              \
4216                   -Wl,--wrap,avcodec_decode_audio4      \
4217                   -Wl,--wrap,avcodec_decode_video2      \
4218                   -Wl,--wrap,avcodec_decode_subtitle2   \
4219                   -Wl,--wrap,avcodec_encode_audio2      \
4220                   -Wl,--wrap,avcodec_encode_video2      \
4221                   -Wl,--wrap,avcodec_encode_subtitle    \
4222                   -Wl,--wrap,avresample_convert         \
4223                   -Wl,--wrap,sws_scale ||
4224     disable xmm_clobber_test
4225
4226 echo "X{};" > $TMPV
4227 if test_ldflags -Wl,--version-script,$TMPV; then
4228     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4229     check_cc <<EOF && enable symver_asm_label
4230 void ff_foo(void) __asm__ ("av_foo@VERSION");
4231 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4232 EOF
4233     check_cc <<EOF && enable symver_gnu_asm
4234 __asm__(".symver ff_foo,av_foo@VERSION");
4235 void ff_foo(void) {}
4236 EOF
4237 fi
4238
4239 if [ -z "$optflags" ]; then
4240     if enabled small; then
4241         optflags=$cflags_size
4242     elif enabled optimizations; then
4243         optflags=$cflags_speed
4244     else
4245         optflags=$cflags_noopt
4246     fi
4247 fi
4248
4249 check_optflags(){
4250     check_cflags "$@"
4251     enabled lto && check_ldflags "$@"
4252 }
4253
4254
4255 if enabled lto; then
4256     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4257     check_cflags  -flto
4258     check_ldflags -flto $cpuflags
4259 fi
4260
4261 check_optflags $optflags
4262 check_optflags -fno-math-errno
4263 check_optflags -fno-signed-zeros
4264
4265 if enabled icc; then
4266     # Just warnings, no remarks
4267     check_cflags -w1
4268     # -wd: Disable following warnings
4269     # 144, 167, 556: -Wno-pointer-sign
4270     # 1292: attribute "foo" ignored
4271     # 1419: external declaration in primary source file
4272     # 10006: ignoring unknown option -fno-signed-zeros
4273     # 10148: ignoring unknown option -Wno-parentheses
4274     # 10156: ignoring option '-W'; no argument required
4275     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4276     # 11030: Warning unknown option --as-needed
4277     # 10156: ignoring option '-export'; no argument required
4278     check_ldflags -wd10156,11030
4279     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4280     enable ebp_available
4281     if enabled x86_32; then
4282         icc_version=$($cc -dumpversion)
4283         test ${icc_version%%.*} -ge 11 &&
4284             check_cflags -falign-stack=maintain-16-byte ||
4285             disable aligned_stack
4286     fi
4287 elif enabled ccc; then
4288     # disable some annoying warnings
4289     add_cflags -msg_disable bitnotint
4290     add_cflags -msg_disable mixfuncvoid
4291     add_cflags -msg_disable nonstandcast
4292     add_cflags -msg_disable unsupieee
4293 elif enabled gcc; then
4294     check_optflags -fno-tree-vectorize
4295     check_cflags -Werror=implicit-function-declaration
4296     check_cflags -Werror=missing-prototypes
4297     check_cflags -Werror=return-type
4298     check_cflags -Werror=declaration-after-statement
4299     check_cflags -Werror=vla
4300     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4301 elif enabled llvm_gcc; then
4302     check_cflags -mllvm -stack-alignment=16
4303 elif enabled clang; then
4304     check_cflags -mllvm -stack-alignment=16
4305     check_cflags -Qunused-arguments
4306     check_cflags -Werror=implicit-function-declaration
4307     check_cflags -Werror=missing-prototypes
4308     check_cflags -Werror=return-type
4309 elif enabled cparser; then
4310     add_cflags -Wno-missing-variable-declarations
4311     add_cflags -Wno-empty-statement
4312 elif enabled armcc; then
4313     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4314     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4315     # 2523: use of inline assembler is deprecated
4316     add_cflags -W${armcc_opt},--diag_suppress=2523
4317     add_cflags -W${armcc_opt},--diag_suppress=1207
4318     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4319     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4320     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4321     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4322 elif enabled tms470; then
4323     add_cflags -pds=824 -pds=837
4324     disable inline_asm
4325 elif enabled pathscale; then
4326     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4327 elif enabled_any msvc icl; then
4328     enabled x86_32 && disable aligned_stack
4329     enabled_all x86_32 debug && add_cflags -Oy-
4330     enabled debug && add_ldflags -debug
4331     enable pragma_deprecated
4332     if enabled icl; then
4333         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4334         # (correctly) on icl 13.x.
4335         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4336             add_cflags -Qansi-alias
4337         # icl will pass the inline asm tests but inline asm is currently
4338         # not supported (build will fail)
4339         disable inline_asm
4340     fi
4341 fi
4342
4343 case $as_type in
4344     clang)
4345         add_asflags -Qunused-arguments
4346     ;;
4347 esac
4348
4349 case $ld_type in
4350     clang)
4351         check_ldflags -Qunused-arguments
4352     ;;
4353 esac
4354
4355 case $target_os in
4356     osf1)
4357         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4358     ;;
4359     plan9)
4360         add_cppflags -Dmain=plan9_main
4361     ;;
4362 esac
4363
4364 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4365
4366 check_deps $CONFIG_LIST       \
4367            $CONFIG_EXTRA      \
4368            $HAVE_LIST         \
4369            $ALL_COMPONENTS    \
4370
4371 enabled_all dxva2 CoTaskMemFree &&
4372     prepend avconv_libs $($ldflags_filter "-lole32") &&
4373     enable dxva2_lib
4374
4375 ! enabled_any memalign posix_memalign aligned_malloc &&
4376     enabled_any $need_memalign && enable memalign_hack
4377
4378 for thread in $THREADS_LIST; do
4379     if enabled $thread; then
4380         test -n "$thread_type" &&
4381             die "ERROR: Only one thread type must be selected." ||
4382             thread_type="$thread"
4383     fi
4384 done
4385
4386 # conditional library dependencies, in linking order
4387 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4388 enabled resample_filter && prepend avfilter_deps "avresample"
4389 enabled scale_filter    && prepend avfilter_deps "swscale"
4390
4391 enabled opus_decoder    && prepend avcodec_deps "avresample"
4392
4393 expand_deps(){
4394     lib_deps=${1}_deps
4395     eval "deps=\$$lib_deps"
4396     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4397     unique $lib_deps
4398 }
4399
4400 map 'expand_deps $v' $LIBRARY_LIST
4401
4402 echo "install prefix            $prefix"
4403 echo "source path               $source_path"
4404 echo "C compiler                $cc"
4405 echo "C library                 $libc_type"
4406 if test "$host_cc" != "$cc"; then
4407     echo "host C compiler           $host_cc"
4408     echo "host C library            $host_libc_type"
4409 fi
4410 echo "ARCH                      $arch ($cpu)"
4411 if test "$build_suffix" != ""; then
4412     echo "build suffix              $build_suffix"
4413 fi
4414 if test "$extra_version" != ""; then
4415     echo "version string suffix     $extra_version"
4416 fi
4417 echo "big-endian                ${bigendian-no}"
4418 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4419 if enabled x86; then
4420     echo "${yasmexe}                      ${yasm-no}"
4421     echo "MMX enabled               ${mmx-no}"
4422     echo "MMXEXT enabled            ${mmxext-no}"
4423     echo "3DNow! enabled            ${amd3dnow-no}"
4424     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4425     echo "SSE enabled               ${sse-no}"
4426     echo "SSSE3 enabled             ${ssse3-no}"
4427     echo "AVX enabled               ${avx-no}"
4428     echo "XOP enabled               ${xop-no}"
4429     echo "FMA3 enabled              ${fma3-no}"
4430     echo "FMA4 enabled              ${fma4-no}"
4431     echo "i686 features enabled     ${i686-no}"
4432     echo "CMOV is fast              ${fast_cmov-no}"
4433     echo "EBX available             ${ebx_available-no}"
4434     echo "EBP available             ${ebp_available-no}"
4435 fi
4436 if enabled aarch64; then
4437     echo "NEON enabled              ${neon-no}"
4438     echo "VFP enabled               ${vfp-no}"
4439 fi
4440 if enabled arm; then
4441     echo "ARMv5TE enabled           ${armv5te-no}"
4442     echo "ARMv6 enabled             ${armv6-no}"
4443     echo "ARMv6T2 enabled           ${armv6t2-no}"
4444     echo "VFP enabled               ${vfp-no}"
4445     echo "NEON enabled              ${neon-no}"
4446 fi
4447 if enabled ppc; then
4448     echo "AltiVec enabled           ${altivec-no}"
4449     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4450     echo "dcbzl available           ${dcbzl-no}"
4451 fi
4452 echo "debug symbols             ${debug-no}"
4453 echo "optimize for size         ${small-no}"
4454 echo "optimizations             ${optimizations-no}"
4455 echo "static                    ${static-no}"
4456 echo "shared                    ${shared-no}"
4457 echo "new filter support        ${avfilter-no}"
4458 echo "network support           ${network-no}"
4459 echo "threading support         ${thread_type-no}"
4460 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4461 echo "SDL support               ${sdl-no}"
4462 test -n "$random_seed" &&
4463     echo "random seed               ${random_seed}"
4464 echo
4465
4466 echo "External libraries:"
4467 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4468 echo
4469
4470 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4471     echo "Enabled ${type}s:"
4472     eval list=\$$(toupper $type)_LIST
4473     print_enabled '_*' $list | print_3_columns
4474     echo
4475 done
4476
4477 license="LGPL version 2.1 or later"
4478 if enabled nonfree; then
4479     license="nonfree and unredistributable"
4480 elif enabled gplv3; then
4481     license="GPL version 3 or later"
4482 elif enabled lgplv3; then
4483     license="LGPL version 3 or later"
4484 elif enabled gpl; then
4485     license="GPL version 2 or later"
4486 fi
4487
4488 echo "License: $license"
4489
4490 echo "Creating config.mak and config.h..."
4491
4492 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4493
4494 config_files="$TMPH config.mak"
4495
4496 cat > config.mak <<EOF
4497 # Automatically generated by configure - do not modify!
4498 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4499 prefix=$prefix
4500 LIBDIR=\$(DESTDIR)$libdir
4501 SHLIBDIR=\$(DESTDIR)$shlibdir
4502 INCDIR=\$(DESTDIR)$incdir
4503 BINDIR=\$(DESTDIR)$bindir
4504 DATADIR=\$(DESTDIR)$datadir
4505 DOCDIR=\$(DESTDIR)$docdir
4506 MANDIR=\$(DESTDIR)$mandir
4507 SRC_PATH=$source_path
4508 CC_IDENT=$cc_ident
4509 ARCH=$arch
4510 CC=$cc
4511 AS=$as
4512 LD=$ld
4513 DEPCC=$dep_cc
4514 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4515 DEPAS=$as
4516 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4517 YASM=$yasmexe
4518 DEPYASM=$yasmexe
4519 AR=$ar
4520 ARFLAGS=$arflags
4521 AR_O=$ar_o
4522 RANLIB=$ranlib
4523 STRIP=$strip
4524 LN_S=$ln_s
4525 CPPFLAGS=$CPPFLAGS
4526 CFLAGS=$CFLAGS
4527 ASFLAGS=$ASFLAGS
4528 AS_C=$AS_C
4529 AS_O=$AS_O
4530 CC_C=$CC_C
4531 CC_E=$CC_E
4532 CC_O=$CC_O
4533 LD_O=$LD_O
4534 LD_LIB=$LD_LIB
4535 LD_PATH=$LD_PATH
4536 DLLTOOL=$dlltool
4537 LDFLAGS=$LDFLAGS
4538 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4539 STRIPFLAGS=$STRIPFLAGS
4540 YASMFLAGS=$YASMFLAGS
4541 BUILDSUF=$build_suffix
4542 FULLNAME=$FULLNAME
4543 LIBPREF=$LIBPREF
4544 LIBSUF=$LIBSUF
4545 LIBNAME=$LIBNAME
4546 SLIBPREF=$SLIBPREF
4547 SLIBSUF=$SLIBSUF
4548 EXESUF=$EXESUF
4549 EXTRA_VERSION=$extra_version
4550 CCDEP=$CCDEP
4551 CCDEP_FLAGS=$CCDEP_FLAGS
4552 ASDEP=$ASDEP
4553 ASDEP_FLAGS=$ASDEP_FLAGS
4554 CC_DEPFLAGS=$CC_DEPFLAGS
4555 AS_DEPFLAGS=$AS_DEPFLAGS
4556 HOSTCC=$host_cc
4557 HOSTLD=$host_ld
4558 HOSTCFLAGS=$host_cflags
4559 HOSTCPPFLAGS=$host_cppflags
4560 HOSTEXESUF=$HOSTEXESUF
4561 HOSTLDFLAGS=$host_ldflags
4562 HOSTLIBS=$host_libs
4563 DEPHOSTCC=$host_cc
4564 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4565 HOSTCCDEP=$HOSTCCDEP
4566 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4567 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4568 HOSTCC_C=$HOSTCC_C
4569 HOSTCC_O=$HOSTCC_O
4570 HOSTLD_O=$HOSTLD_O
4571 TARGET_EXEC=$target_exec $target_exec_args
4572 TARGET_PATH=$target_path
4573 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4574 CFLAGS-avplay=$sdl_cflags
4575 ZLIB=$($ldflags_filter -lz)
4576 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4577 EXTRALIBS=$extralibs
4578 COMPAT_OBJS=$compat_objs
4579 EXEOBJS=$exeobjs
4580 INSTALL=install
4581 LIBTARGET=${LIBTARGET}
4582 SLIBNAME=${SLIBNAME}
4583 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4584 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4585 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4586 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4587 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4588 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4589 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4590 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4591 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4592 EOF
4593
4594 get_version(){
4595     lcname=lib${1}
4596     name=$(toupper $lcname)
4597     file=$source_path/$lcname/version.h
4598     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4599     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4600     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4601     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4602     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4603 }
4604
4605 map 'get_version $v' $LIBRARY_LIST
4606
4607 map 'eval echo "FFLIBS-${v}=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4608
4609 print_program_libs(){
4610     eval "program_libs=\$${1}_libs"
4611     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4612 }
4613
4614 map 'print_program_libs $v' $PROGRAM_LIST
4615
4616 cat > $TMPH <<EOF
4617 /* Automatically generated by configure - do not modify! */
4618 #ifndef LIBAV_CONFIG_H
4619 #define LIBAV_CONFIG_H
4620 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4621 #define LIBAV_LICENSE "$(c_escape $license)"
4622 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4623 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4624 #define restrict $_restrict
4625 #define EXTERN_PREFIX "${extern_prefix}"
4626 #define EXTERN_ASM ${extern_prefix}
4627 #define SLIBSUF "$SLIBSUF"
4628 EOF
4629
4630 test -n "$malloc_prefix" &&
4631     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4632
4633 if enabled yasm; then
4634     append config_files $TMPASM
4635     printf '' >$TMPASM
4636 fi
4637
4638 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4639
4640 print_config ARCH_   "$config_files" $ARCH_LIST
4641 print_config HAVE_   "$config_files" $HAVE_LIST
4642 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4643                                      $CONFIG_EXTRA      \
4644                                      $ALL_COMPONENTS    \
4645
4646 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4647
4648 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4649 cp_if_changed $TMPH config.h
4650 touch .config
4651
4652 enabled yasm && cp_if_changed $TMPASM config.asm
4653
4654 cat > $TMPH <<EOF
4655 /* Generated by ffconf */
4656 #ifndef AVUTIL_AVCONFIG_H
4657 #define AVUTIL_AVCONFIG_H
4658 EOF
4659
4660 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4661
4662 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4663
4664 cp_if_changed $TMPH libavutil/avconfig.h
4665
4666 test -n "$WARNINGS" && printf "\n$WARNINGS"
4667
4668 # build pkg-config files
4669
4670 lib_version(){
4671     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4672 }
4673
4674 pkgconfig_generate(){
4675     name=$1
4676     shortname=${name#lib}${build_suffix}
4677     comment=$2
4678     version=$3
4679     libs=$4
4680     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4681     requires=${requires%, }
4682     enabled ${name#lib} || return 0
4683     mkdir -p $name
4684     cat <<EOF > $name/$name.pc
4685 prefix=$prefix
4686 exec_prefix=\${prefix}
4687 libdir=$libdir
4688 includedir=$incdir
4689
4690 Name: $name
4691 Description: $comment
4692 Version: $version
4693 Requires: $(enabled shared || echo $requires)
4694 Requires.private: $(enabled shared && echo $requires)
4695 Conflicts:
4696 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4697 Libs.private: $(enabled shared && echo $libs)
4698 Cflags: -I\${includedir}
4699 EOF
4700     cat <<EOF > $name/$name-uninstalled.pc
4701 prefix=
4702 exec_prefix=
4703 libdir=\${pcfiledir}
4704 includedir=${source_path}
4705
4706 Name: $name
4707 Description: $comment
4708 Version: $version
4709 Requires: $requires
4710 Conflicts:
4711 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4712 Cflags: -I\${includedir}
4713 EOF
4714 }
4715
4716 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4717 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4718 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4719 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4720 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4721 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
4722 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"