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       deprecated, does nothing
 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 [$target_os]
 226   --target-exec=CMD        command to run executables on target
 227   --target-path=DIR        path to view of build directory on target
 228   --target-samples=DIR     path to samples directory on target
 229   --toolchain=NAME         set tool defaults according to NAME
 230   --nm=NM                  use nm tool
 231   --ar=AR                  use archive tool AR [$ar_default]
 232   --as=AS                  use assembler AS [$as_default]
 233   --cc=CC                  use C compiler CC [$cc_default]
 234   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 235   --ld=LD                  use linker LD
 236   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 237   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 238   --host-cc=HOSTCC         use host C compiler HOSTCC
 239   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 240   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 241   --host-ld=HOSTLD         use host linker HOSTLD
 242   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 243   --host-libs=HLIBS        use libs HLIBS when linking for host
 244   --host-os=OS             compiler host OS [$target_os]
 245   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 246   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 247   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 248   --extra-version=STRING   version string suffix []
 249   --optflags=OPTFLAGS      override optimization-related compiler flags
 250   --build-suffix=SUFFIX    library name suffix []
 251   --enable-pic             build position-independent code
 252   --enable-thumb           compile for Thumb instruction set
 253   --enable-lto             use link-time optimization
 254
 255 Advanced options (experts only):
 256   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 257   --disable-symver         disable symbol versioning
 258   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 259   --disable-safe-bitstream-reader
 260                            disable buffer boundary checking in bitreaders
 261                            (faster, but may crash)
 262   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 263   --enable-sram            allow use of on-chip SRAM
 264
 265 Optimization options (experts only):
 266   --disable-asm            disable all assembly optimizations
 267   --disable-altivec        disable AltiVec optimizations
 268   --disable-amd3dnow       disable 3DNow! optimizations
 269   --disable-amd3dnowext    disable 3DNow! extended optimizations
 270   --disable-mmx            disable MMX optimizations
 271   --disable-mmxext         disable MMXEXT optimizations
 272   --disable-sse            disable SSE optimizations
 273   --disable-sse2           disable SSE2 optimizations
 274   --disable-sse3           disable SSE3 optimizations
 275   --disable-ssse3          disable SSSE3 optimizations
 276   --disable-sse4           disable SSE4 optimizations
 277   --disable-sse42          disable SSE4.2 optimizations
 278   --disable-avx            disable AVX optimizations
 279   --disable-xop            disable XOP optimizations
 280   --disable-fma3           disable FMA3 optimizations
 281   --disable-fma4           disable FMA4 optimizations
 282   --disable-avx2           disable AVX2 optimizations
 283   --disable-armv5te        disable armv5te optimizations
 284   --disable-armv6          disable armv6 optimizations
 285   --disable-armv6t2        disable armv6t2 optimizations
 286   --disable-vfp            disable VFP optimizations
 287   --disable-neon           disable NEON optimizations
 288   --disable-inline-asm     disable use of inline assembly
 289   --disable-yasm           disable use of nasm/yasm assembly
 290
 291 Developer options (useful when working on Libav itself):
 292   --disable-debug          disable debugging symbols
 293   --enable-debug=LEVEL     set the debug level [$debuglevel]
 294   --disable-optimizations  disable compiler optimizations
 295   --enable-extra-warnings  enable more compiler warnings
 296   --samples=PATH           location of test samples for FATE, if not set use
 297                            \$LIBAV_SAMPLES at make invocation time.
 298   --enable-neon-clobber-test check NEON registers for clobbering (should be
 299                            used only for debugging purposes)
 300   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 301                            should be used only for debugging purposes)
 302   --enable-random          randomly enable/disable components
 303   --disable-random
 304   --enable-random=LIST     randomly enable/disable specific components or
 305   --disable-random=LIST    component groups. LIST is a comma-separated list
 306                            of NAME[:PROB] entries where NAME is a component
 307                            (group) and PROB the probability associated with
 308                            NAME (default 0.5).
 309   --random-seed=VALUE      seed value for --enable/disable-random
 310
 311 NOTE: Object files are built at the place where configure is launched.
 312 EOF
 313   exit 0
 314 }
 315
 316 quotes='""'
 317
 318 log(){
 319     echo "$@" >> $logfile
 320 }
 321
 322 log_file(){
 323     log BEGIN $1
 324     pr -n -t $1 >> $logfile
 325     log END $1
 326 }
 327
 328 echolog(){
 329     log "$@"
 330     echo "$@"
 331 }
 332
 333 warn(){
 334     log "WARNING: $*"
 335     WARNINGS="${WARNINGS}WARNING: $*\n"
 336 }
 337
 338 die(){
 339     echolog "$@"
 340     cat <<EOF
 341
 342 If you think configure made a mistake, make sure you are using the latest
 343 version from Git.  If the latest version fails, report the problem to the
 344 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 345 EOF
 346     if disabled logging; then
 347         cat <<EOF
 348 Rerun configure with logging enabled (do not use --disable-logging), and
 349 include the log this produces with your report.
 350 EOF
 351     else
 352         cat <<EOF
 353 Include the log file "$logfile" produced by configure as this will help
 354 solving the problem.
 355 EOF
 356     fi
 357     exit 1
 358 }
 359
 360 # Avoid locale weirdness, besides we really just want to translate ASCII.
 361 toupper(){
 362     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 363 }
 364
 365 tolower(){
 366     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 367 }
 368
 369 c_escape(){
 370     echo "$*" | sed 's/["\\]/\\\0/g'
 371 }
 372
 373 sh_quote(){
 374     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 375     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 376     echo "$v"
 377 }
 378
 379 cleanws(){
 380     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 381 }
 382
 383 filter(){
 384     pat=$1
 385     shift
 386     for v; do
 387         eval "case $v in $pat) echo $v ;; esac"
 388     done
 389 }
 390
 391 filter_out(){
 392     pat=$1
 393     shift
 394     for v; do
 395         eval "case $v in $pat) ;; *) echo $v ;; esac"
 396     done
 397 }
 398
 399 map(){
 400     m=$1
 401     shift
 402     for v; do eval $m; done
 403 }
 404
 405 add_suffix(){
 406     suffix=$1
 407     shift
 408     for v; do echo ${v}${suffix}; done
 409 }
 410
 411 set_all(){
 412     value=$1
 413     shift
 414     for var in $*; do
 415         eval $var=$value
 416     done
 417 }
 418
 419 set_weak(){
 420     value=$1
 421     shift
 422     for var; do
 423         eval : \${$var:=$value}
 424     done
 425 }
 426
 427 sanitize_var_name(){
 428     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 429 }
 430
 431 set_safe(){
 432     var=$1
 433     shift
 434     eval $(sanitize_var_name "$var")='$*'
 435 }
 436
 437 get_safe(){
 438     eval echo \$$(sanitize_var_name "$1")
 439 }
 440
 441 pushvar(){
 442     for pvar in $*; do
 443         eval level=\${${pvar}_level:=0}
 444         eval ${pvar}_${level}="\$$pvar"
 445         eval ${pvar}_level=$(($level+1))
 446     done
 447 }
 448
 449 popvar(){
 450     for pvar in $*; do
 451         eval level=\${${pvar}_level:-0}
 452         test $level = 0 && continue
 453         eval level=$(($level-1))
 454         eval $pvar="\${${pvar}_${level}}"
 455         eval ${pvar}_level=$level
 456         eval unset ${pvar}_${level}
 457     done
 458 }
 459
 460 enable(){
 461     set_all yes $*
 462 }
 463
 464 disable(){
 465     set_all no $*
 466 }
 467
 468 enable_weak(){
 469     set_weak yes $*
 470 }
 471
 472 disable_weak(){
 473     set_weak no $*
 474 }
 475
 476 enable_safe(){
 477     for var; do
 478         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 479     done
 480 }
 481
 482 disable_safe(){
 483     for var; do
 484         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 485     done
 486 }
 487
 488 do_enable_deep(){
 489     for var; do
 490         enabled $var && continue
 491         eval sel="\$${var}_select"
 492         eval sgs="\$${var}_suggest"
 493         pushvar var sgs
 494         enable_deep $sel
 495         popvar sgs
 496         enable_deep_weak $sgs
 497         popvar var
 498     done
 499 }
 500
 501 enable_deep(){
 502     do_enable_deep $*
 503     enable $*
 504 }
 505
 506 enable_deep_weak(){
 507     for var; do
 508         disabled $var && continue
 509         pushvar var
 510         do_enable_deep $var
 511         popvar var
 512         enable_weak $var
 513     done
 514 }
 515
 516 enabled(){
 517     test "${1#!}" = "$1" && op== || op=!=
 518     eval test "x\$${1#!}" $op "xyes"
 519 }
 520
 521 disabled(){
 522     test "${1#!}" = "$1" && op== || op=!=
 523     eval test "x\$${1#!}" $op "xno"
 524 }
 525
 526 enabled_all(){
 527     for opt; do
 528         enabled $opt || return 1
 529     done
 530 }
 531
 532 disabled_all(){
 533     for opt; do
 534         disabled $opt || return 1
 535     done
 536 }
 537
 538 enabled_any(){
 539     for opt; do
 540         enabled $opt && return 0
 541     done
 542 }
 543
 544 disabled_any(){
 545     for opt; do
 546         disabled $opt && return 0
 547     done
 548     return 1
 549 }
 550
 551 set_default(){
 552     for opt; do
 553         eval : \${$opt:=\$${opt}_default}
 554     done
 555 }
 556
 557 is_in(){
 558     value=$1
 559     shift
 560     for var in $*; do
 561         [ $var = $value ] && return 0
 562     done
 563     return 1
 564 }
 565
 566 do_check_deps(){
 567     for cfg; do
 568         cfg="${cfg#!}"
 569         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 570         disabled ${cfg}_checking && continue
 571         enable ${cfg}_checking
 572         append allopts $cfg
 573
 574         eval dep_all="\$${cfg}_deps"
 575         eval dep_any="\$${cfg}_deps_any"
 576         eval dep_sel="\$${cfg}_select"
 577         eval dep_sgs="\$${cfg}_suggest"
 578         eval dep_ifa="\$${cfg}_if"
 579         eval dep_ifn="\$${cfg}_if_any"
 580
 581         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 582         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 583         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 584
 585         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 586         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 587         enabled_all  $dep_all || disable $cfg
 588         enabled_any  $dep_any || disable $cfg
 589         disabled_any $dep_sel && disable $cfg
 590
 591         if enabled $cfg; then
 592             enable_deep $dep_sel
 593             enable_deep_weak $dep_sgs
 594         fi
 595
 596         disable ${cfg}_checking
 597     done
 598 }
 599
 600 check_deps(){
 601     unset allopts
 602
 603     do_check_deps "$@"
 604
 605     for cfg in $allopts; do
 606         enabled $cfg || continue
 607         eval dep_extralibs="\$${cfg}_extralibs"
 608         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 609     done
 610 }
 611
 612 print_config(){
 613     pfx=$1
 614     files=$2
 615     shift 2
 616     map 'eval echo "$v \${$v:-no}"' "$@" |
 617     awk "BEGIN { split(\"$files\", files) }
 618         {
 619             c = \"$pfx\" toupper(\$1);
 620             v = \$2;
 621             sub(/yes/, 1, v);
 622             sub(/no/,  0, v);
 623             for (f in files) {
 624                 file = files[f];
 625                 if (file ~ /\\.h\$/) {
 626                     printf(\"#define %s %d\\n\", c, v) >>file;
 627                 } else if (file ~ /\\.asm\$/) {
 628                     printf(\"%%define %s %d\\n\", c, v) >>file;
 629                 } else if (file ~ /\\.mak\$/) {
 630                     n = -v ? \"\" : \"!\";
 631                     printf(\"%s%s=yes\\n\", n, c) >>file;
 632                 }
 633             }
 634         }"
 635 }
 636
 637 print_enabled(){
 638     suf=$1
 639     shift
 640     for v; do
 641         enabled $v && printf "%s\n" ${v%$suf};
 642     done
 643 }
 644
 645 append(){
 646     var=$1
 647     shift
 648     eval "$var=\"\$$var $*\""
 649 }
 650
 651 prepend(){
 652     var=$1
 653     shift
 654     eval "$var=\"$* \$$var\""
 655 }
 656
 657 unique(){
 658     var=$1
 659     uniq_list=""
 660     for tok in $(eval echo \$$var); do
 661         uniq_list="$(filter_out $tok $uniq_list) $tok"
 662     done
 663     eval "$var=\"${uniq_list}\""
 664 }
 665
 666 add_cppflags(){
 667     append CPPFLAGS "$@"
 668 }
 669
 670 add_cflags(){
 671     append CFLAGS $($cflags_filter "$@")
 672 }
 673
 674 add_asflags(){
 675     append ASFLAGS $($asflags_filter "$@")
 676 }
 677
 678 add_ldflags(){
 679     append LDFLAGS $($ldflags_filter "$@")
 680 }
 681
 682 add_stripflags(){
 683     append STRIPFLAGS "$@"
 684 }
 685
 686 add_extralibs(){
 687     prepend extralibs $($ldflags_filter "$@")
 688 }
 689
 690 add_host_cppflags(){
 691     append host_cppflags "$@"
 692 }
 693
 694 add_host_cflags(){
 695     append host_cflags $($host_cflags_filter "$@")
 696 }
 697
 698 add_host_ldflags(){
 699     append host_ldflags $($host_ldflags_filter "$@")
 700 }
 701
 702 add_compat(){
 703     append compat_objs $1
 704     shift
 705     map 'add_cppflags -D$v' "$@"
 706 }
 707
 708 check_cmd(){
 709     log "$@"
 710     "$@" >> $logfile 2>&1
 711 }
 712
 713 cc_o(){
 714     eval printf '%s\\n' $CC_O
 715 }
 716
 717 cc_e(){
 718     eval printf '%s\\n' $CC_E
 719 }
 720
 721 check_cc(){
 722     log check_cc "$@"
 723     cat > $TMPC
 724     log_file $TMPC
 725     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 726 }
 727
 728 check_cpp(){
 729     log check_cpp "$@"
 730     cat > $TMPC
 731     log_file $TMPC
 732     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 733 }
 734
 735 as_o(){
 736     eval printf '%s\\n' $AS_O
 737 }
 738
 739 check_as(){
 740     log check_as "$@"
 741     cat > $TMPS
 742     log_file $TMPS
 743     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 744 }
 745
 746 check_inline_asm(){
 747     log check_inline_asm "$@"
 748     name="$1"
 749     code="$2"
 750     shift 2
 751     disable $name
 752     check_cc "$@" <<EOF && enable $name
 753 void foo(void){ __asm__ volatile($code); }
 754 EOF
 755 }
 756
 757 check_insn(){
 758     log check_insn "$@"
 759     check_inline_asm ${1}_inline "\"$2\""
 760     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 761 }
 762
 763 check_yasm(){
 764     log check_yasm "$@"
 765     echo "$1" > $TMPS
 766     log_file $TMPS
 767     shift 1
 768     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 769 }
 770
 771 ld_o(){
 772     eval printf '%s\\n' $LD_O
 773 }
 774
 775 check_ld(){
 776     log check_ld "$@"
 777     flags=$(filter_out '-l*' "$@")
 778     libs=$(filter '-l*' "$@")
 779     check_cc $($cflags_filter $flags) || return
 780     flags=$($ldflags_filter $flags)
 781     libs=$($ldflags_filter $libs)
 782     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 783 }
 784
 785 print_include(){
 786     hdr=$1
 787     test "${hdr%.h}" = "${hdr}" &&
 788         echo "#include $hdr"    ||
 789         echo "#include <$hdr>"
 790 }
 791
 792 check_code(){
 793     log check_code "$@"
 794     check=$1
 795     headers=$2
 796     code=$3
 797     shift 3
 798     {
 799         for hdr in $headers; do
 800             print_include $hdr
 801         done
 802         echo "int main(void) { $code; return 0; }"
 803     } | check_$check "$@"
 804 }
 805
 806 check_cppflags(){
 807     log check_cppflags "$@"
 808     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 809 int x;
 810 EOF
 811 }
 812
 813 test_cflags(){
 814     log test_cflags "$@"
 815     set -- $($cflags_filter "$@")
 816     check_cc "$@" <<EOF
 817 int x;
 818 EOF
 819 }
 820
 821 check_cflags(){
 822     log check_cflags "$@"
 823     test_cflags "$@" && add_cflags "$@"
 824 }
 825
 826 test_ldflags(){
 827     log test_ldflags "$@"
 828     check_ld "$@" <<EOF
 829 int main(void){ return 0; }
 830 EOF
 831 }
 832
 833 check_ldflags(){
 834     log check_ldflags "$@"
 835     test_ldflags "$@" && add_ldflags "$@"
 836 }
 837
 838 test_stripflags(){
 839     log test_stripflags "$@"
 840     # call check_cc to get a fresh TMPO
 841     check_cc <<EOF
 842 int main(void) { return 0; }
 843 EOF
 844     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 845 }
 846
 847 check_stripflags(){
 848     log check_stripflags "$@"
 849     test_stripflags "$@" && add_stripflags "$@"
 850 }
 851
 852 check_header(){
 853     log check_header "$@"
 854     header=$1
 855     shift
 856     disable_safe $header
 857     check_cpp "$@" <<EOF && enable_safe $header
 858 #include <$header>
 859 int x;
 860 EOF
 861 }
 862
 863 check_func(){
 864     log check_func "$@"
 865     func=$1
 866     shift
 867     disable $func
 868     check_ld "$@" <<EOF && enable $func
 869 extern int $func();
 870 int main(void){ $func(); }
 871 EOF
 872 }
 873
 874 check_mathfunc(){
 875     log check_mathfunc "$@"
 876     func=$1
 877     narg=$2
 878     shift 2
 879     test $narg = 2 && args="f, g" || args="f"
 880     disable $func
 881     check_ld "$@" <<EOF && enable $func
 882 #include <math.h>
 883 float foo(float f, float g) { return $func($args); }
 884 int main(void){ return 0; }
 885 EOF
 886 }
 887
 888 check_func_headers(){
 889     log check_func_headers "$@"
 890     headers=$1
 891     funcs=$2
 892     shift 2
 893     {
 894         for hdr in $headers; do
 895             print_include $hdr
 896         done
 897         for func in $funcs; do
 898             echo "long check_$func(void) { return (long) $func; }"
 899         done
 900         echo "int main(void) { return 0; }"
 901     } | check_ld "$@" && enable $funcs && enable_safe $headers
 902 }
 903
 904 check_cpp_condition(){
 905     log check_cpp_condition "$@"
 906     header=$1
 907     condition=$2
 908     shift 2
 909     check_cpp "$@" <<EOF
 910 #include <$header>
 911 #if !($condition)
 912 #error "unsatisfied condition: $condition"
 913 #endif
 914 EOF
 915 }
 916
 917 check_lib(){
 918     log check_lib "$@"
 919     header="$1"
 920     func="$2"
 921     shift 2
 922     check_header $header && check_func $func "$@" && add_extralibs "$@"
 923 }
 924
 925 check_lib2(){
 926     log check_lib2 "$@"
 927     headers="$1"
 928     funcs="$2"
 929     shift 2
 930     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 931 }
 932
 933 check_pkg_config(){
 934     log check_pkg_config "$@"
 935     pkg="$1"
 936     headers="$2"
 937     funcs="$3"
 938     shift 3
 939     check_cmd $pkg_config --exists --print-errors $pkg || return
 940     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
 941     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
 942     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 943         set_safe ${pkg}_cflags $pkg_cflags   &&
 944         set_safe ${pkg}_libs   $pkg_libs
 945 }
 946
 947 check_exec(){
 948     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 949 }
 950
 951 check_exec_crash(){
 952     code=$(cat)
 953
 954     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 955     # are safe but may not be available everywhere.  Thus we use
 956     # raise(SIGTERM) instead.  The check is run in a subshell so we
 957     # can redirect the "Terminated" message from the shell.  SIGBUS
 958     # is not defined by standard C so it is used conditionally.
 959
 960     (check_exec "$@") >> $logfile 2>&1 <<EOF
 961 #include <signal.h>
 962 static void sighandler(int sig){
 963     raise(SIGTERM);
 964 }
 965 int foo(void){
 966     $code
 967 }
 968 int (*func_ptr)(void) = foo;
 969 int main(void){
 970     signal(SIGILL, sighandler);
 971     signal(SIGFPE, sighandler);
 972     signal(SIGSEGV, sighandler);
 973 #ifdef SIGBUS
 974     signal(SIGBUS, sighandler);
 975 #endif
 976     return func_ptr();
 977 }
 978 EOF
 979 }
 980
 981 check_type(){
 982     log check_type "$@"
 983     headers=$1
 984     type=$2
 985     shift 2
 986     disable_safe "$type"
 987     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 988 }
 989
 990 check_struct(){
 991     log check_struct "$@"
 992     headers=$1
 993     struct=$2
 994     member=$3
 995     shift 3
 996     disable_safe "${struct}_${member}"
 997     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 998         enable_safe "${struct}_${member}"
 999 }
1000
1001 check_builtin(){
1002     log check_builtin "$@"
1003     name=$1
1004     headers=$2
1005     builtin=$3
1006     shift 3
1007     disable "$name"
1008     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1009 }
1010
1011 check_compile_assert(){
1012     log check_compile_assert "$@"
1013     name=$1
1014     headers=$2
1015     condition=$3
1016     shift 3
1017     disable "$name"
1018     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1019 }
1020
1021 require(){
1022     name="$1"
1023     header="$2"
1024     func="$3"
1025     shift 3
1026     check_lib $header $func "$@" || die "ERROR: $name not found"
1027 }
1028
1029 require2(){
1030     name="$1"
1031     headers="$2"
1032     func="$3"
1033     shift 3
1034     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1035 }
1036
1037 require_pkg_config(){
1038     pkg="$1"
1039     check_pkg_config "$@" || die "ERROR: $pkg not found"
1040     add_cflags    $(get_safe ${pkg}_cflags)
1041     add_extralibs $(get_safe ${pkg}_libs)
1042 }
1043
1044 hostcc_e(){
1045     eval printf '%s\\n' $HOSTCC_E
1046 }
1047
1048 hostcc_o(){
1049     eval printf '%s\\n' $HOSTCC_O
1050 }
1051
1052 check_host_cc(){
1053     log check_host_cc "$@"
1054     cat > $TMPC
1055     log_file $TMPC
1056     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1057 }
1058
1059 check_host_cpp(){
1060     log check_host_cpp "$@"
1061     cat > $TMPC
1062     log_file $TMPC
1063     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1064 }
1065
1066 check_host_cppflags(){
1067     log check_host_cppflags "$@"
1068     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1069 int x;
1070 EOF
1071 }
1072
1073 check_host_cflags(){
1074     log check_host_cflags "$@"
1075     set -- $($host_cflags_filter "$@")
1076     check_host_cc "$@" <<EOF && append host_cflags "$@"
1077 int x;
1078 EOF
1079 }
1080
1081 check_host_cpp_condition(){
1082     log check_host_cpp_condition "$@"
1083     header=$1
1084     condition=$2
1085     shift 2
1086     check_host_cpp "$@" <<EOF
1087 #include <$header>
1088 #if !($condition)
1089 #error "unsatisfied condition: $condition"
1090 #endif
1091 EOF
1092 }
1093
1094 apply(){
1095     file=$1
1096     shift
1097     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1098 }
1099
1100 cp_if_changed(){
1101     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1102     mkdir -p "$(dirname $2)"
1103     $cp_f "$1" "$2"
1104 }
1105
1106 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1107 # system-dependent things.
1108
1109 COMPONENT_LIST="
1110     bsfs
1111     decoders
1112     demuxers
1113     encoders
1114     filters
1115     hwaccels
1116     indevs
1117     muxers
1118     outdevs
1119     parsers
1120     protocols
1121 "
1122
1123 EXAMPLE_LIST="
1124     avcodec_example
1125     filter_audio_example
1126     metadata_example
1127     output_example
1128     transcode_aac_example
1129 "
1130
1131 EXTERNAL_LIBRARY_LIST="
1132     avisynth
1133     bzlib
1134     frei0r
1135     gnutls
1136     libbs2b
1137     libcdio
1138     libdc1394
1139     libfaac
1140     libfdk_aac
1141     libfontconfig
1142     libfreetype
1143     libgsm
1144     libilbc
1145     libmp3lame
1146     libopencore_amrnb
1147     libopencore_amrwb
1148     libopencv
1149     libopenjpeg
1150     libopus
1151     libpulse
1152     librtmp
1153     libschroedinger
1154     libspeex
1155     libtheora
1156     libtwolame
1157     libvo_aacenc
1158     libvo_amrwbenc
1159     libvorbis
1160     libvpx
1161     libwavpack
1162     libwebp
1163     libx264
1164     libx265
1165     libxavs
1166     libxvid
1167     openssl
1168     x11grab
1169     zlib
1170 "
1171
1172 FEATURE_LIST="
1173     gray
1174     hardcoded_tables
1175     runtime_cpudetect
1176     safe_bitstream_reader
1177     shared
1178     small
1179     sram
1180     static
1181     swscale_alpha
1182 "
1183
1184 HWACCEL_LIST="
1185     dxva2
1186     vaapi
1187     vda
1188     vdpau
1189 "
1190
1191 LIBRARY_LIST="
1192     avcodec
1193     avdevice
1194     avfilter
1195     avformat
1196     avresample
1197     avutil
1198     swscale
1199 "
1200
1201 LICENSE_LIST="
1202     gpl
1203     nonfree
1204     version3
1205 "
1206
1207 PROGRAM_LIST="
1208     avconv
1209     avplay
1210     avprobe
1211 "
1212
1213 SUBSYSTEM_LIST="
1214     dct
1215     doc
1216     error_resilience
1217     fft
1218     lsp
1219     lzo
1220     mdct
1221     network
1222     rdft
1223 "
1224
1225 CONFIG_LIST="
1226     $COMPONENT_LIST
1227     $EXAMPLE_LIST
1228     $EXTERNAL_LIBRARY_LIST
1229     $FEATURE_LIST
1230     $HWACCEL_LIST
1231     $LICENSE_LIST
1232     $LIBRARY_LIST
1233     $PROGRAM_LIST
1234     $SUBSYSTEM_LIST
1235     memalign_hack
1236     neon_clobber_test
1237     pic
1238     pod2man
1239     texi2html
1240     thumb
1241     xmm_clobber_test
1242 "
1243
1244 THREADS_LIST="
1245     pthreads
1246     w32threads
1247 "
1248
1249 ATOMICS_LIST="
1250     atomics_gcc
1251     atomics_suncc
1252     atomics_win32
1253 "
1254
1255 ARCH_LIST="
1256     aarch64
1257     alpha
1258     arm
1259     avr32
1260     avr32_ap
1261     avr32_uc
1262     bfin
1263     ia64
1264     m68k
1265     mips
1266     mips64
1267     parisc
1268     ppc
1269     ppc64
1270     s390
1271     sh4
1272     sparc
1273     sparc64
1274     tilegx
1275     tilepro
1276     tomi
1277     x86
1278     x86_32
1279     x86_64
1280 "
1281
1282 ARCH_EXT_LIST_ARM="
1283     armv5te
1284     armv6
1285     armv6t2
1286     armv8
1287     neon
1288     vfp
1289     vfpv3
1290 "
1291
1292 ARCH_EXT_LIST_X86_SIMD="
1293     amd3dnow
1294     amd3dnowext
1295     avx
1296     avx2
1297     fma3
1298     fma4
1299     mmx
1300     mmxext
1301     sse
1302     sse2
1303     sse3
1304     sse4
1305     sse42
1306     ssse3
1307     xop
1308 "
1309
1310 ARCH_EXT_LIST_PPC="
1311     altivec
1312     dcbzl
1313     ldbrx
1314     ppc4xx
1315 "
1316
1317 ARCH_EXT_LIST_X86="
1318     $ARCH_EXT_LIST_X86_SIMD
1319     cpunop
1320     i686
1321 "
1322
1323 ARCH_EXT_LIST="
1324     $ARCH_EXT_LIST_ARM
1325     $ARCH_EXT_LIST_PPC
1326     $ARCH_EXT_LIST_X86
1327     loongson
1328     vis
1329 "
1330
1331 ARCH_FEATURES="
1332     aligned_stack
1333     fast_64bit
1334     fast_clz
1335     fast_cmov
1336     local_aligned_8
1337     local_aligned_16
1338 "
1339
1340 BUILTIN_LIST="
1341     atomic_cas_ptr
1342     machine_rw_barrier
1343     MemoryBarrier
1344     mm_empty
1345     rdtsc
1346     sync_val_compare_and_swap
1347 "
1348 HAVE_LIST_CMDLINE="
1349     inline_asm
1350     symver
1351     yasm
1352 "
1353
1354 HAVE_LIST_PUB="
1355     bigendian
1356     fast_unaligned
1357 "
1358
1359 HEADERS_LIST="
1360     alsa_asoundlib_h
1361     altivec_h
1362     arpa_inet_h
1363     cdio_paranoia_h
1364     cdio_paranoia_paranoia_h
1365     dev_bktr_ioctl_bt848_h
1366     dev_bktr_ioctl_meteor_h
1367     dev_ic_bt8xx_h
1368     dev_video_bktr_ioctl_bt848_h
1369     dev_video_meteor_ioctl_meteor_h
1370     direct_h
1371     dlfcn_h
1372     dxva_h
1373     gsm_h
1374     io_h
1375     mach_mach_time_h
1376     machine_ioctl_bt848_h
1377     machine_ioctl_meteor_h
1378     malloc_h
1379     poll_h
1380     sndio_h
1381     soundcard_h
1382     sys_mman_h
1383     sys_param_h
1384     sys_resource_h
1385     sys_select_h
1386     sys_soundcard_h
1387     sys_time_h
1388     sys_un_h
1389     sys_videoio_h
1390     unistd_h
1391     windows_h
1392     winsock2_h
1393 "
1394
1395 MATH_FUNCS="
1396     atanf
1397     atan2f
1398     cbrtf
1399     cosf
1400     exp2
1401     exp2f
1402     expf
1403     isinf
1404     isnan
1405     ldexpf
1406     llrint
1407     llrintf
1408     log2
1409     log2f
1410     log10f
1411     lrint
1412     lrintf
1413     powf
1414     rint
1415     round
1416     roundf
1417     sinf
1418     trunc
1419     truncf
1420 "
1421
1422 SYSTEM_FUNCS="
1423     aligned_malloc
1424     closesocket
1425     CommandLineToArgvW
1426     CoTaskMemFree
1427     CryptGenRandom
1428     dlopen
1429     fcntl
1430     flt_lim
1431     fork
1432     getaddrinfo
1433     gethrtime
1434     getopt
1435     GetProcessAffinityMask
1436     GetProcessMemoryInfo
1437     GetProcessTimes
1438     getrusage
1439     getservbyport
1440     GetSystemTimeAsFileTime
1441     gettimeofday
1442     inet_aton
1443     isatty
1444     jack_port_get_latency_range
1445     localtime_r
1446     mach_absolute_time
1447     MapViewOfFile
1448     memalign
1449     mkstemp
1450     mmap
1451     mprotect
1452     nanosleep
1453     posix_memalign
1454     sched_getaffinity
1455     SetConsoleTextAttribute
1456     setmode
1457     setrlimit
1458     Sleep
1459     strerror_r
1460     strptime
1461     sysconf
1462     sysctl
1463     usleep
1464     VirtualAlloc
1465 "
1466
1467 TOOLCHAIN_FEATURES="
1468     as_dn_directive
1469     as_func
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     audiodsp
1533     blockdsp
1534     bswapdsp
1535     cabac
1536     dsputil
1537     fdctdsp
1538     gcrypt
1539     golomb
1540     gplv3
1541     h263dsp
1542     h264chroma
1543     h264dsp
1544     h264pred
1545     h264qpel
1546     hpeldsp
1547     huffman
1548     huffyuvdsp
1549     huffyuvencdsp
1550     idctdsp
1551     intrax8
1552     lgplv3
1553     lpc
1554     mpeg_er
1555     mpegaudio
1556     mpegaudiodsp
1557     mpegvideo
1558     mpegvideoenc
1559     nettle
1560     qpeldsp
1561     rangecoder
1562     riffdec
1563     riffenc
1564     rtpdec
1565     rtpenc_chain
1566     sinewin
1567     tpeldsp
1568     videodsp
1569     vp3dsp
1570 "
1571
1572 CMDLINE_SELECT="
1573     $ARCH_EXT_LIST
1574     $CONFIG_LIST
1575     $HAVE_LIST_CMDLINE
1576     $THREADS_LIST
1577     asm
1578     cross_compile
1579     debug
1580     extra_warnings
1581     logging
1582     lto
1583     optimizations
1584 "
1585
1586 PATHS_LIST="
1587     bindir
1588     datadir
1589     docdir
1590     incdir
1591     libdir
1592     mandir
1593     prefix
1594     shlibdir
1595 "
1596
1597 CMDLINE_SET="
1598     $PATHS_LIST
1599     ar
1600     arch
1601     as
1602     build_suffix
1603     cc
1604     cpu
1605     cross_prefix
1606     dep_cc
1607     extra_version
1608     host_cc
1609     host_cflags
1610     host_ld
1611     host_ldflags
1612     host_libs
1613     host_os
1614     ld
1615     logfile
1616     malloc_prefix
1617     nm
1618     optflags
1619     pkg_config
1620     pkg_config_flags
1621     random_seed
1622     samples
1623     sysinclude
1624     sysroot
1625     target_exec
1626     target_os
1627     target_path
1628     target_samples
1629     toolchain
1630 "
1631
1632 CMDLINE_APPEND="
1633     extra_cflags
1634     host_cppflags
1635 "
1636
1637 # code dependency declarations
1638
1639 # architecture extensions
1640
1641 armv5te_deps="arm"
1642 armv6_deps="arm"
1643 armv6t2_deps="arm"
1644 armv8_deps="aarch64"
1645 neon_deps_any="aarch64 arm"
1646 vfp_deps_any="aarch64 arm"
1647 vfpv3_deps="vfp"
1648
1649 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1650
1651 altivec_deps="ppc"
1652 ppc4xx_deps="ppc"
1653
1654 cpunop_deps="i686"
1655 x86_64_select="i686"
1656 x86_64_suggest="fast_cmov"
1657
1658 amd3dnow_deps="mmx"
1659 amd3dnowext_deps="amd3dnow"
1660 i686_deps="x86"
1661 mmx_deps="x86"
1662 mmxext_deps="mmx"
1663 sse_deps="mmxext"
1664 sse2_deps="sse"
1665 sse3_deps="sse2"
1666 ssse3_deps="sse3"
1667 sse4_deps="ssse3"
1668 sse42_deps="sse4"
1669 avx_deps="sse42"
1670 xop_deps="avx"
1671 fma3_deps="avx"
1672 fma4_deps="avx"
1673 avx2_deps="avx"
1674
1675 mmx_external_deps="yasm"
1676 mmx_inline_deps="inline_asm"
1677 mmx_suggest="mmx_external mmx_inline"
1678
1679 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1680     eval dep=\$${ext}_deps
1681     eval ${ext}_external_deps='"${dep}_external"'
1682     eval ${ext}_inline_deps='"${dep}_inline"'
1683     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1684 done
1685
1686 aligned_stack_if_any="aarch64 ppc x86"
1687 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1688 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1689 fast_unaligned_if_any="aarch64 ppc x86"
1690
1691 need_memalign="altivec neon sse"
1692
1693 # system capabilities
1694 log2_deps="!libc_msvcrt"
1695
1696 symver_if_any="symver_asm_label symver_gnu_asm"
1697
1698 # threading support
1699 atomics_gcc_if="sync_val_compare_and_swap"
1700 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1701 atomics_win32_if="MemoryBarrier"
1702 atomics_native_if_any="$ATOMICS_LIST"
1703 w32threads_deps="atomics_native"
1704 threads_if_any="$THREADS_LIST"
1705
1706 # subsystems
1707 dct_select="rdft"
1708 dsputil_select="fdctdsp idctdsp"
1709 error_resilience_select="dsputil"
1710 intrax8_select="error_resilience"
1711 mdct_select="fft"
1712 rdft_select="fft"
1713 mpeg_er_select="error_resilience"
1714 mpegaudio_select="mpegaudiodsp"
1715 mpegaudiodsp_select="dct"
1716 mpegvideo_select="blockdsp dsputil hpeldsp idctdsp videodsp"
1717 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1718
1719 # decoders / encoders
1720 aac_decoder_select="mdct sinewin"
1721 aac_encoder_select="audio_frame_queue mdct sinewin"
1722 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1723 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1724 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
1725 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
1726 aic_decoder_select="golomb idctdsp"
1727 alac_encoder_select="lpc"
1728 als_decoder_select="bswapdsp"
1729 amrnb_decoder_select="lsp"
1730 amrwb_decoder_select="lsp"
1731 amv_decoder_select="sp5x_decoder"
1732 ape_decoder_select="bswapdsp"
1733 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1734 asv1_encoder_select="bswapdsp dsputil fdctdsp"
1735 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1736 asv2_encoder_select="bswapdsp dsputil fdctdsp"
1737 atrac1_decoder_select="mdct sinewin"
1738 atrac3_decoder_select="mdct"
1739 atrac3p_decoder_select="mdct sinewin"
1740 bink_decoder_select="blockdsp hpeldsp"
1741 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1742 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1743 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1744 cllc_decoder_select="bswapdsp"
1745 comfortnoise_encoder_select="lpc"
1746 cook_decoder_select="audiodsp mdct sinewin"
1747 cscd_decoder_select="lzo"
1748 cscd_decoder_suggest="zlib"
1749 dca_decoder_select="mdct"
1750 dnxhd_decoder_select="blockdsp idctdsp"
1751 dnxhd_encoder_select="aandcttables blockdsp dsputil fdctdsp idctdsp mpegvideoenc"
1752 dvvideo_decoder_select="idctdsp"
1753 dvvideo_encoder_select="dsputil fdctdsp"
1754 dxa_decoder_deps="zlib"
1755 eac3_decoder_select="ac3_decoder"
1756 eac3_encoder_select="ac3_encoder"
1757 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1758 eatgq_decoder_select="aandcttables idctdsp"
1759 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1760 exr_decoder_deps="zlib"
1761 ffv1_decoder_select="golomb rangecoder"
1762 ffv1_encoder_select="rangecoder"
1763 ffvhuff_decoder_select="huffyuv_decoder"
1764 ffvhuff_encoder_select="huffyuv_encoder"
1765 fic_decoder_select="golomb"
1766 flac_decoder_select="golomb"
1767 flac_encoder_select="bswapdsp golomb lpc"
1768 flashsv_decoder_deps="zlib"
1769 flashsv_encoder_deps="zlib"
1770 flashsv2_decoder_deps="zlib"
1771 flv_decoder_select="h263_decoder"
1772 flv_encoder_select="h263_encoder"
1773 fourxm_decoder_select="blockdsp bswapdsp"
1774 fraps_decoder_select="bswapdsp huffman"
1775 g2m_decoder_deps="zlib"
1776 g2m_decoder_select="blockdsp idctdsp"
1777 h261_decoder_select="mpeg_er mpegvideo"
1778 h261_encoder_select="aandcttables mpegvideoenc"
1779 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1780 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1781 h263i_decoder_select="h263_decoder"
1782 h263p_encoder_select="h263_encoder"
1783 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1784 h264_decoder_suggest="error_resilience"
1785 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1786 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1787 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1788 iac_decoder_select="imc_decoder"
1789 imc_decoder_select="bswapdsp fft mdct sinewin"
1790 indeo3_decoder_select="hpeldsp"
1791 interplay_video_decoder_select="hpeldsp"
1792 jpegls_decoder_select="golomb mjpeg_decoder"
1793 jpegls_encoder_select="golomb"
1794 jv_decoder_select="blockdsp"
1795 lagarith_decoder_select="huffyuvdsp"
1796 ljpeg_encoder_select="aandcttables idctdsp"
1797 loco_decoder_select="golomb"
1798 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1799 metasound_decoder_select="lsp mdct sinewin"
1800 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1801 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1802 mjpeg_encoder_select="aandcttables mpegvideoenc"
1803 mjpegb_decoder_select="mjpeg_decoder"
1804 mlp_decoder_select="mlp_parser"
1805 motionpixels_decoder_select="bswapdsp"
1806 mp1_decoder_select="mpegaudio"
1807 mp1float_decoder_select="mpegaudio"
1808 mp2_decoder_select="mpegaudio"
1809 mp2float_decoder_select="mpegaudio"
1810 mp3_decoder_select="mpegaudio"
1811 mp3adu_decoder_select="mpegaudio"
1812 mp3adufloat_decoder_select="mpegaudio"
1813 mp3float_decoder_select="mpegaudio"
1814 mp3on4_decoder_select="mpegaudio"
1815 mp3on4float_decoder_select="mpegaudio"
1816 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1817 mpc8_decoder_select="mpegaudiodsp"
1818 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1819 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1820 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1821 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1822 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1823 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1824 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1825 mpeg4_encoder_select="h263_encoder"
1826 msmpeg4v1_decoder_select="h263_decoder"
1827 msmpeg4v2_decoder_select="h263_decoder"
1828 msmpeg4v2_encoder_select="h263_encoder"
1829 msmpeg4v3_decoder_select="h263_decoder"
1830 msmpeg4v3_encoder_select="h263_encoder"
1831 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1832 mxpeg_decoder_select="mjpeg_decoder"
1833 nellymoser_decoder_select="mdct sinewin"
1834 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1835 nuv_decoder_select="idctdsp lzo"
1836 on2avc_decoder_select="mdct"
1837 opus_decoder_deps="avresample"
1838 png_decoder_deps="zlib"
1839 png_encoder_deps="zlib"
1840 png_encoder_select="huffyuvencdsp"
1841 prores_decoder_select="idctdsp"
1842 prores_encoder_select="fdctdsp"
1843 qcelp_decoder_select="lsp"
1844 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1845 ra_144_encoder_select="audio_frame_queue lpc"
1846 ralf_decoder_select="golomb"
1847 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1848 rv10_encoder_select="h263_encoder"
1849 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1850 rv20_encoder_select="h263_encoder"
1851 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1852 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1853 shorten_decoder_select="golomb"
1854 sipr_decoder_select="lsp"
1855 sp5x_decoder_select="mjpeg_decoder"
1856 svq1_decoder_select="hpeldsp"
1857 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1858 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1859 svq3_decoder_suggest="zlib"
1860 tak_decoder_select="audiodsp"
1861 theora_decoder_select="vp3_decoder"
1862 thp_decoder_select="mjpeg_decoder"
1863 tiff_decoder_suggest="zlib"
1864 tiff_encoder_suggest="zlib"
1865 truehd_decoder_select="mlp_decoder"
1866 truemotion2_decoder_select="bswapdsp"
1867 truespeech_decoder_select="bswapdsp"
1868 tscc_decoder_deps="zlib"
1869 twinvq_decoder_select="mdct lsp sinewin"
1870 utvideo_decoder_select="bswapdsp"
1871 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1872 vble_decoder_select="huffyuvdsp"
1873 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
1874 vc1image_decoder_select="vc1_decoder"
1875 vorbis_decoder_select="mdct"
1876 vorbis_encoder_select="mdct"
1877 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1878 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1879 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1880 vp6a_decoder_select="vp6_decoder"
1881 vp6f_decoder_select="vp6_decoder"
1882 vp7_decoder_select="h264pred videodsp"
1883 vp8_decoder_select="h264pred videodsp"
1884 vp9_decoder_select="videodsp"
1885 webp_decoder_select="vp8_decoder"
1886 wmapro_decoder_select="mdct sinewin"
1887 wmav1_decoder_select="mdct sinewin"
1888 wmav1_encoder_select="mdct sinewin"
1889 wmav2_decoder_select="mdct sinewin"
1890 wmav2_encoder_select="mdct sinewin"
1891 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1892 wmv1_decoder_select="h263_decoder"
1893 wmv1_encoder_select="h263_encoder"
1894 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1895 wmv2_encoder_select="h263_encoder"
1896 wmv3_decoder_select="vc1_decoder"
1897 wmv3image_decoder_select="wmv3_decoder"
1898 zerocodec_decoder_deps="zlib"
1899 zlib_decoder_deps="zlib"
1900 zlib_encoder_deps="zlib"
1901 zmbv_decoder_deps="zlib"
1902 zmbv_encoder_deps="zlib"
1903
1904 # hardware accelerators
1905 dxva2_deps="dxva2api_h"
1906 vaapi_deps="va_va_h"
1907 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1908 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1909 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1910
1911 h263_vaapi_hwaccel_deps="vaapi"
1912 h263_vaapi_hwaccel_select="h263_decoder"
1913 h263_vdpau_hwaccel_deps="vdpau"
1914 h263_vdpau_hwaccel_select="h263_decoder"
1915 h264_dxva2_hwaccel_deps="dxva2"
1916 h264_dxva2_hwaccel_select="h264_decoder"
1917 h264_vaapi_hwaccel_deps="vaapi"
1918 h264_vaapi_hwaccel_select="h264_decoder"
1919 h264_vda_hwaccel_deps="vda"
1920 h264_vda_hwaccel_select="h264_decoder"
1921 h264_vda_old_hwaccel_deps="vda"
1922 h264_vda_old_hwaccel_select="h264_decoder"
1923 h264_vdpau_hwaccel_deps="vdpau"
1924 h264_vdpau_hwaccel_select="h264_decoder"
1925 mpeg1_vdpau_hwaccel_deps="vdpau"
1926 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1927 mpeg2_dxva2_hwaccel_deps="dxva2"
1928 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1929 mpeg2_vaapi_hwaccel_deps="vaapi"
1930 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1931 mpeg2_vdpau_hwaccel_deps="vdpau"
1932 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1933 mpeg4_vaapi_hwaccel_deps="vaapi"
1934 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1935 mpeg4_vdpau_hwaccel_deps="vdpau"
1936 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1937 vc1_dxva2_hwaccel_deps="dxva2"
1938 vc1_dxva2_hwaccel_select="vc1_decoder"
1939 vc1_vaapi_hwaccel_deps="vaapi"
1940 vc1_vaapi_hwaccel_select="vc1_decoder"
1941 vc1_vdpau_hwaccel_deps="vdpau"
1942 vc1_vdpau_hwaccel_select="vc1_decoder"
1943 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1944 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1945 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1946
1947 # parsers
1948 h264_parser_select="h264_decoder"
1949 mpegvideo_parser_select="mpegvideo"
1950 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1951 vc1_parser_select="mpegvideo"
1952
1953 # external libraries
1954 libfaac_encoder_deps="libfaac"
1955 libfaac_encoder_select="audio_frame_queue"
1956 libfdk_aac_decoder_deps="libfdk_aac"
1957 libfdk_aac_encoder_deps="libfdk_aac"
1958 libfdk_aac_encoder_select="audio_frame_queue"
1959 libgsm_decoder_deps="libgsm"
1960 libgsm_encoder_deps="libgsm"
1961 libgsm_ms_decoder_deps="libgsm"
1962 libgsm_ms_encoder_deps="libgsm"
1963 libilbc_decoder_deps="libilbc"
1964 libilbc_encoder_deps="libilbc"
1965 libmp3lame_encoder_deps="libmp3lame"
1966 libmp3lame_encoder_select="audio_frame_queue"
1967 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1968 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1969 libopencore_amrnb_encoder_select="audio_frame_queue"
1970 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1971 libopenjpeg_decoder_deps="libopenjpeg"
1972 libopenjpeg_encoder_deps="libopenjpeg"
1973 libopus_decoder_deps="libopus"
1974 libopus_encoder_deps="libopus"
1975 libopus_encoder_select="audio_frame_queue"
1976 libschroedinger_decoder_deps="libschroedinger"
1977 libschroedinger_encoder_deps="libschroedinger"
1978 libspeex_decoder_deps="libspeex"
1979 libspeex_encoder_deps="libspeex"
1980 libspeex_encoder_select="audio_frame_queue"
1981 libtheora_encoder_deps="libtheora"
1982 libtwolame_encoder_deps="libtwolame"
1983 libvo_aacenc_encoder_deps="libvo_aacenc"
1984 libvo_aacenc_encoder_select="audio_frame_queue"
1985 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1986 libvorbis_encoder_deps="libvorbis"
1987 libvorbis_encoder_select="audio_frame_queue"
1988 libvpx_vp8_decoder_deps="libvpx"
1989 libvpx_vp8_encoder_deps="libvpx"
1990 libvpx_vp9_decoder_deps="libvpx"
1991 libvpx_vp9_encoder_deps="libvpx"
1992 libwavpack_encoder_deps="libwavpack"
1993 libwebp_encoder_deps="libwebp"
1994 libx264_encoder_deps="libx264"
1995 libx265_encoder_deps="libx265"
1996 libxavs_encoder_deps="libxavs"
1997 libxvid_encoder_deps="libxvid"
1998
1999 # demuxers / muxers
2000 ac3_demuxer_select="ac3_parser"
2001 asf_demuxer_select="riffdec"
2002 asf_muxer_select="riffenc"
2003 asf_stream_muxer_select="asf_muxer"
2004 avi_demuxer_select="riffdec"
2005 avi_muxer_select="riffenc"
2006 avisynth_demuxer_deps="avisynth"
2007 avisynth_demuxer_select="riffdec"
2008 caf_demuxer_select="riffdec"
2009 dirac_demuxer_select="dirac_parser"
2010 dxa_demuxer_select="riffdec"
2011 eac3_demuxer_select="ac3_parser"
2012 f4v_muxer_select="mov_muxer"
2013 flac_demuxer_select="flac_parser"
2014 hds_muxer_select="flv_muxer"
2015 hls_muxer_select="mpegts_muxer"
2016 ipod_muxer_select="mov_muxer"
2017 ismv_muxer_select="mov_muxer"
2018 matroska_audio_muxer_select="matroska_muxer"
2019 matroska_demuxer_select="riffdec"
2020 matroska_demuxer_suggest="bzlib lzo zlib"
2021 matroska_muxer_select="riffenc"
2022 mmf_muxer_select="riffenc"
2023 mov_demuxer_select="riffdec"
2024 mov_demuxer_suggest="zlib"
2025 mov_muxer_select="riffenc rtpenc_chain"
2026 mp3_demuxer_select="mpegaudio_parser"
2027 mp4_muxer_select="mov_muxer"
2028 mpegts_muxer_select="adts_muxer latm_muxer"
2029 mpegtsraw_demuxer_select="mpegts_demuxer"
2030 mxf_d10_muxer_select="mxf_muxer"
2031 nut_muxer_select="riffenc"
2032 nuv_demuxer_select="riffdec"
2033 ogg_demuxer_select="golomb"
2034 psp_muxer_select="mov_muxer"
2035 rtp_demuxer_select="sdp_demuxer"
2036 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2037 rtsp_demuxer_select="http_protocol rtpdec"
2038 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2039 sap_demuxer_select="sdp_demuxer"
2040 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2041 sdp_demuxer_select="rtpdec"
2042 smoothstreaming_muxer_select="ismv_muxer"
2043 spdif_muxer_select="aac_parser"
2044 tak_demuxer_select="tak_parser"
2045 tg2_muxer_select="mov_muxer"
2046 tgp_muxer_select="mov_muxer"
2047 w64_demuxer_select="wav_demuxer"
2048 wav_demuxer_select="riffdec"
2049 wav_muxer_select="riffenc"
2050 webm_muxer_select="riffenc"
2051 wtv_demuxer_select="riffdec"
2052 xmv_demuxer_select="riffdec"
2053 xwma_demuxer_select="riffdec"
2054
2055 # indevs / outdevs
2056 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2057 alsa_outdev_deps="alsa_asoundlib_h"
2058 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2059 dv1394_indev_deps="dv1394"
2060 dv1394_indev_select="dv_demuxer"
2061 fbdev_indev_deps="linux_fb_h"
2062 jack_indev_deps="jack_jack_h pthreads"
2063 libcdio_indev_deps="libcdio"
2064 libdc1394_indev_deps="libdc1394"
2065 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2066 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2067 pulse_indev_deps="libpulse"
2068 sndio_indev_deps="sndio_h"
2069 sndio_outdev_deps="sndio_h"
2070 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2071 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2072 vfwcap_indev_extralibs="-lavicap32"
2073 x11grab_indev_deps="x11grab XShmCreateImage"
2074
2075 # protocols
2076 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2077 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2078 ffrtmpcrypt_protocol_select="tcp_protocol"
2079 ffrtmphttp_protocol_deps="!librtmp_protocol"
2080 ffrtmphttp_protocol_select="http_protocol"
2081 gopher_protocol_select="network"
2082 http_protocol_select="tcp_protocol"
2083 httpproxy_protocol_select="tcp_protocol"
2084 https_protocol_select="tls_protocol"
2085 librtmp_protocol_deps="librtmp"
2086 librtmpe_protocol_deps="librtmp"
2087 librtmps_protocol_deps="librtmp"
2088 librtmpt_protocol_deps="librtmp"
2089 librtmpte_protocol_deps="librtmp"
2090 mmsh_protocol_select="http_protocol"
2091 mmst_protocol_select="network"
2092 rtmp_protocol_deps="!librtmp_protocol"
2093 rtmp_protocol_select="tcp_protocol"
2094 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2095 rtmps_protocol_deps="!librtmp_protocol"
2096 rtmps_protocol_select="tls_protocol"
2097 rtmpt_protocol_select="ffrtmphttp_protocol"
2098 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2099 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2100 rtp_protocol_select="udp_protocol"
2101 sctp_protocol_deps="struct_sctp_event_subscribe"
2102 sctp_protocol_select="network"
2103 srtp_protocol_select="rtp_protocol"
2104 tcp_protocol_select="network"
2105 tls_protocol_deps_any="openssl gnutls"
2106 tls_protocol_select="tcp_protocol"
2107 udp_protocol_select="network"
2108 unix_protocol_deps="sys_un_h"
2109 unix_protocol_select="network"
2110
2111 # filters
2112 blackframe_filter_deps="gpl"
2113 boxblur_filter_deps="gpl"
2114 bs2b_filter_deps="libbs2b"
2115 cropdetect_filter_deps="gpl"
2116 delogo_filter_deps="gpl"
2117 drawtext_filter_deps="libfreetype"
2118 frei0r_filter_deps="frei0r dlopen"
2119 frei0r_filter_extralibs='$ldl'
2120 frei0r_src_filter_deps="frei0r dlopen"
2121 frei0r_src_filter_extralibs='$ldl'
2122 hqdn3d_filter_deps="gpl"
2123 interlace_filter_deps="gpl"
2124 ocv_filter_deps="libopencv"
2125 resample_filter_deps="avresample"
2126 scale_filter_deps="swscale"
2127
2128 # examples
2129 avcodec_example_deps="avcodec avutil"
2130 filter_audio_example_deps="avfilter avutil"
2131 metadata_example_deps="avformat avutil"
2132 output_example_deps="avcodec avformat avutil swscale"
2133 transcode_aac_example_deps="avcodec avformat avresample"
2134
2135 # libraries, in linking order
2136 avcodec_deps="avutil"
2137 avdevice_deps="avformat avcodec avutil"
2138 avfilter_deps="avutil"
2139 avformat_deps="avcodec avutil"
2140 avresample_deps="avutil"
2141 swscale_deps="avutil"
2142
2143 # programs
2144 avconv_deps="avcodec avfilter avformat avresample swscale"
2145 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2146                fps_filter null_filter resample_filter scale_filter
2147                setpts_filter trim_filter"
2148 avplay_deps="avcodec avformat avresample swscale sdl"
2149 avplay_libs='$sdl_libs'
2150 avplay_select="rdft"
2151 avprobe_deps="avcodec avformat"
2152
2153 # documentation
2154 pod2man_deps="doc"
2155 texi2html_deps="doc"
2156
2157 # default parameters
2158
2159 logfile="config.log"
2160
2161 # installation paths
2162 prefix_default="/usr/local"
2163 bindir_default='${prefix}/bin'
2164 datadir_default='${prefix}/share/avconv'
2165 docdir_default='${prefix}/share/doc/libav'
2166 incdir_default='${prefix}/include'
2167 libdir_default='${prefix}/lib'
2168 mandir_default='${prefix}/share/man'
2169 shlibdir_default="$libdir_default"
2170
2171 # toolchain
2172 ar_default="ar"
2173 cc_default="gcc"
2174 host_cc_default="gcc"
2175 cp_f="cp -f"
2176 ln_s="ln -s -f"
2177 nm_default="nm -g"
2178 objformat="elf"
2179 pkg_config_default=pkg-config
2180 ranlib="ranlib"
2181 strip="strip"
2182 yasmexe="yasm"
2183
2184 nogas=":"
2185
2186 # machine
2187 arch_default=$(uname -m)
2188 cpu="generic"
2189
2190 # OS
2191 target_os_default=$(tolower $(uname -s))
2192 host_os=$target_os_default
2193
2194 # configurable options
2195 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2196
2197 enable asm
2198 enable debug
2199 enable doc
2200 enable optimizations
2201 enable safe_bitstream_reader
2202 enable static
2203 enable swscale_alpha
2204
2205 # By default, enable only those hwaccels that have no external dependencies.
2206 enable dxva2 vdpau
2207
2208 # build settings
2209 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2210 LIBPREF="lib"
2211 LIBSUF=".a"
2212 FULLNAME='$(NAME)$(BUILDSUF)'
2213 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2214 SLIBPREF="lib"
2215 SLIBSUF=".so"
2216 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2217 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2218 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2219 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2220 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2221 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2222
2223 asflags_filter=echo
2224 cflags_filter=echo
2225 ldflags_filter=echo
2226
2227 AS_C='-c'
2228 AS_O='-o $@'
2229 CC_C='-c'
2230 CC_E='-E -o $@'
2231 CC_O='-o $@'
2232 LD_O='-o $@'
2233 LD_LIB='-l%'
2234 LD_PATH='-L'
2235 HOSTCC_C='-c'
2236 HOSTCC_E='-E -o $@'
2237 HOSTCC_O='-o $@'
2238 HOSTLD_O='-o $@'
2239
2240 host_libs='-lm'
2241 host_cflags_filter=echo
2242 host_ldflags_filter=echo
2243
2244 target_path='$(CURDIR)'
2245
2246 # since the object filename is not given with the -MM flag, the compiler
2247 # is only able to print the basename, and we must add the path ourselves
2248 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2249 DEPFLAGS='-MM'
2250
2251 # find source path
2252 if test -f configure; then
2253     source_path=.
2254 else
2255     source_path=$(cd $(dirname "$0"); pwd)
2256     echo "$source_path" | grep -q '[[:blank:]]' &&
2257         die "Out of tree builds are impossible with whitespace in source path."
2258     test -e "$source_path/config.h" &&
2259         die "Out of tree builds are impossible with config.h in source dir."
2260 fi
2261
2262 for v in "$@"; do
2263     r=${v#*=}
2264     l=${v%"$r"}
2265     r=$(sh_quote "$r")
2266     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2267 done
2268
2269 find_things(){
2270     thing=$1
2271     pattern=$2
2272     file=$source_path/$3
2273     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2274 }
2275
2276 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2277 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2278 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2279 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2280 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2281 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2282 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2283 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2284 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2285 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2286 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2287
2288 ALL_COMPONENTS="
2289     $BSF_LIST
2290     $DECODER_LIST
2291     $DEMUXER_LIST
2292     $ENCODER_LIST
2293     $FILTER_LIST
2294     $HWACCEL_LIST
2295     $INDEV_LIST
2296     $MUXER_LIST
2297     $OUTDEV_LIST
2298     $PARSER_LIST
2299     $PROTOCOL_LIST
2300 "
2301
2302 for n in $COMPONENT_LIST; do
2303     v=$(toupper ${n%s})_LIST
2304     eval enable \$$v
2305     eval ${n}_if_any="\$$v"
2306 done
2307
2308 enable $ARCH_EXT_LIST
2309
2310 die_unknown(){
2311     echo "Unknown option \"$1\"."
2312     echo "See $0 --help for available options."
2313     exit 1
2314 }
2315
2316 print_3_columns() {
2317     cat | tr ' ' '\n' | sort | pr -r -3 -t
2318 }
2319
2320 show_list() {
2321     suffix=_$1
2322     shift
2323     echo $* | sed s/$suffix//g | print_3_columns
2324     exit 0
2325 }
2326
2327 rand_list(){
2328     IFS=', '
2329     set -- $*
2330     unset IFS
2331     for thing; do
2332         comp=${thing%:*}
2333         prob=${thing#$comp}
2334         prob=${prob#:}
2335         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2336         echo "prob ${prob:-0.5}"
2337         printf '%s\n' $comp
2338     done
2339 }
2340
2341 do_random(){
2342     action=$1
2343     shift
2344     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2345     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2346 }
2347
2348 for opt do
2349     optval="${opt#*=}"
2350     case "$opt" in
2351         --extra-ldflags=*)
2352             add_ldflags $optval
2353         ;;
2354         --extra-libs=*)
2355             add_extralibs $optval
2356         ;;
2357         --disable-devices)
2358             disable $INDEV_LIST $OUTDEV_LIST
2359         ;;
2360         --enable-debug=*)
2361             debuglevel="$optval"
2362         ;;
2363         --disable-programs)
2364             disable $PROGRAM_LIST
2365         ;;
2366         --disable-everything)
2367             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2368         ;;
2369         --disable-all)
2370             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2371             disable $LIBRARY_LIST $PROGRAM_LIST doc
2372         ;;
2373         --enable-random|--disable-random)
2374             action=${opt%%-random}
2375             do_random ${action#--} $COMPONENT_LIST
2376         ;;
2377         --enable-random=*|--disable-random=*)
2378             action=${opt%%-random=*}
2379             do_random ${action#--} $optval
2380         ;;
2381         --enable-*=*|--disable-*=*)
2382             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2383             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2384             eval list=\$$(toupper $thing)_LIST
2385             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2386             $action $(filter "$name" $list)
2387         ;;
2388         --enable-avserver|--disable-avserver*)
2389             warn "avserver has been removed, the ${opt} option is only"\
2390                  "provided for compatibility and will be removed in the future"
2391         ;;
2392         --enable-?*|--disable-?*)
2393             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2394             if is_in $option $COMPONENT_LIST; then
2395                 test $action = disable && action=unset
2396                 eval $action \$$(toupper ${option%s})_LIST
2397             elif is_in $option $CMDLINE_SELECT; then
2398                 $action $option
2399             else
2400                 die_unknown $opt
2401             fi
2402         ;;
2403         --list-*)
2404             NAME="${opt#--list-}"
2405             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2406             NAME=${NAME%s}
2407             eval show_list $NAME \$$(toupper $NAME)_LIST
2408         ;;
2409         --help|-h) show_help
2410         ;;
2411         *)
2412             optname="${opt%%=*}"
2413             optname="${optname#--}"
2414             optname=$(echo "$optname" | sed 's/-/_/g')
2415             if is_in $optname $CMDLINE_SET; then
2416                 eval $optname='$optval'
2417             elif is_in $optname $CMDLINE_APPEND; then
2418                 append $optname "$optval"
2419             else
2420                 die_unknown $opt
2421             fi
2422         ;;
2423     esac
2424 done
2425
2426 disabled logging && logfile=/dev/null
2427
2428 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2429 set >> $logfile
2430
2431 test -n "$cross_prefix" && enable cross_compile
2432
2433 if enabled cross_compile; then
2434     test -n "$arch" && test -n "$target_os" ||
2435         die "Must specify target arch and OS when cross-compiling"
2436 fi
2437
2438 ar_default="${cross_prefix}${ar_default}"
2439 cc_default="${cross_prefix}${cc_default}"
2440 nm_default="${cross_prefix}${nm_default}"
2441 pkg_config_default="${cross_prefix}${pkg_config_default}"
2442 ranlib="${cross_prefix}${ranlib}"
2443 strip="${cross_prefix}${strip}"
2444
2445 sysinclude_default="${sysroot}/usr/include"
2446
2447 case "$toolchain" in
2448     clang-asan)
2449         cc_default="clang"
2450         add_cflags  -fsanitize=address
2451         add_ldflags -fsanitize=address
2452     ;;
2453     clang-tsan)
2454         cc_default="clang"
2455         add_cflags  -fsanitize=thread -pie
2456         add_ldflags -fsanitize=thread -pie
2457     ;;
2458     clang-usan)
2459         cc_default="clang"
2460         add_cflags  -fsanitize=undefined -O1
2461         add_ldflags -fsanitize=undefined
2462     ;;
2463     gcc-asan)
2464         cc_default="gcc"
2465         add_cflags  -fsanitize=address
2466         add_ldflags -fsanitize=address
2467     ;;
2468     gcc-tsan)
2469         cc_default="gcc"
2470         add_cflags  -fsanitize=thread -pie -fPIC
2471         add_ldflags -fsanitize=thread -pie -fPIC
2472     ;;
2473     gcc-usan)
2474         cc_default="gcc"
2475         add_cflags  -fsanitize=undefined
2476         add_ldflags -fsanitize=undefined
2477     ;;
2478     valgrind-massif)
2479         target_exec_default="valgrind"
2480         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2481     ;;
2482     valgrind-memcheck)
2483         target_exec_default="valgrind"
2484         target_exec_args="--track-origins=yes --leak-check=full"
2485     ;;
2486     msvc)
2487         # Check whether the current MSVC version needs the C99 converter.
2488         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2489         # support enough of C99 to build libav. Default to the new
2490         # behaviour if the regexp was unable to match anything, since this
2491         # successfully parses the version number of existing supported
2492         # versions that require the converter (MSVC 2010 and 2012).
2493         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2494         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2495             cc_default="cl"
2496         else
2497             cc_default="c99wrap cl"
2498         fi
2499         ld_default="link"
2500         nm_default="dumpbin -symbols"
2501         ar_default="lib"
2502         target_os_default="win32"
2503         # Use a relative path for TMPDIR. This makes sure all the
2504         # ffconf temp files are written with a relative path, avoiding
2505         # issues with msys/win32 path conversion for MSVC parameters
2506         # such as -Fo<file> or -out:<file>.
2507         TMPDIR=.
2508     ;;
2509     icl)
2510         cc_default="icl"
2511         ld_default="xilink"
2512         nm_default="dumpbin -symbols"
2513         ar_default="xilib"
2514         target_os_default="win32"
2515         TMPDIR=.
2516     ;;
2517     gcov)
2518         add_cflags  -fprofile-arcs -ftest-coverage
2519         add_ldflags -fprofile-arcs -ftest-coverage
2520     ;;
2521     hardened)
2522         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2523         add_ldflags -Wl,-z,relro -Wl,-z,now
2524     ;;
2525     ?*)
2526         die "Unknown toolchain $toolchain"
2527     ;;
2528 esac
2529
2530 set_default arch cc pkg_config sysinclude target_exec target_os
2531 enabled cross_compile || host_cc_default=$cc
2532 set_default host_cc
2533
2534 if ! $pkg_config --version >/dev/null 2>&1; then
2535     warn "$pkg_config not found, library detection may fail."
2536     pkg_config=false
2537 fi
2538
2539 exesuf() {
2540     case $1 in
2541         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2542     esac
2543 }
2544
2545 EXESUF=$(exesuf $target_os)
2546 HOSTEXESUF=$(exesuf $host_os)
2547
2548 # set temporary file name
2549 : ${TMPDIR:=$TEMPDIR}
2550 : ${TMPDIR:=$TMP}
2551 : ${TMPDIR:=/tmp}
2552
2553 if ! check_cmd mktemp -u XXXXXX; then
2554     # simple replacement for missing mktemp
2555     # NOT SAFE FOR GENERAL USE
2556     mktemp(){
2557         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2558     }
2559 fi
2560
2561 tmpfile(){
2562     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2563         (set -C; exec > $tmp) 2>/dev/null ||
2564         die "Unable to create temporary file in $TMPDIR."
2565     append TMPFILES $tmp
2566     eval $1=$tmp
2567 }
2568
2569 trap 'rm -f -- $TMPFILES' EXIT
2570
2571 tmpfile TMPASM .asm
2572 tmpfile TMPC   .c
2573 tmpfile TMPE   $EXESUF
2574 tmpfile TMPH   .h
2575 tmpfile TMPO   .o
2576 tmpfile TMPS   .S
2577 tmpfile TMPSH  .sh
2578 tmpfile TMPV   .ver
2579
2580 unset -f mktemp
2581
2582 chmod +x $TMPE
2583
2584 # make sure we can execute files in $TMPDIR
2585 cat > $TMPSH 2>> $logfile <<EOF
2586 #! /bin/sh
2587 EOF
2588 chmod +x $TMPSH >> $logfile 2>&1
2589 if ! $TMPSH >> $logfile 2>&1; then
2590     cat <<EOF
2591 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2592 variable to another directory and make sure that it is not mounted noexec.
2593 EOF
2594     die "Sanity test failed."
2595 fi
2596
2597 ccc_flags(){
2598     for flag; do
2599         case $flag in
2600             -std=c99)           echo -c99                       ;;
2601             -mcpu=*)            echo -arch ${flag#*=}           ;;
2602             -mieee)             echo -ieee                      ;;
2603             -O*|-fast)          echo $flag                      ;;
2604             -fno-math-errno)    echo -assume nomath_errno       ;;
2605             -g)                 echo -g3                        ;;
2606             -Wall)              echo -msg_enable level2         ;;
2607             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2608             -Wl,*)              echo $flag                      ;;
2609             -f*|-W*)                                            ;;
2610             *)                  echo $flag                      ;;
2611         esac
2612    done
2613 }
2614
2615 cparser_flags(){
2616     for flag; do
2617         case $flag in
2618             -Wno-switch)             echo -Wno-switch-enum ;;
2619             -Wno-format-zero-length) ;;
2620             -Wdisabled-optimization) ;;
2621             -Wno-pointer-sign)       echo -Wno-other ;;
2622             *)                       echo $flag ;;
2623         esac
2624     done
2625 }
2626
2627 msvc_common_flags(){
2628     for flag; do
2629         case $flag in
2630             # In addition to specifying certain flags under the compiler
2631             # specific filters, they must be specified here as well or else the
2632             # generic catch all at the bottom will print the original flag.
2633             -Wall)                ;;
2634             -std=c99)             ;;
2635             # Common flags
2636             -fomit-frame-pointer) ;;
2637             -g)                   echo -Z7 ;;
2638             -fno-math-errno)      ;;
2639             -fno-common)          ;;
2640             -fno-signed-zeros)    ;;
2641             -fPIC)                ;;
2642             -mthumb)              ;;
2643             -march=*)             ;;
2644             -lz)                  echo zlib.lib ;;
2645             -lavifil32)           echo vfw32.lib ;;
2646             -lavicap32)           echo vfw32.lib user32.lib ;;
2647             -l*)                  echo ${flag#-l}.lib ;;
2648             *)                    echo $flag ;;
2649         esac
2650     done
2651 }
2652
2653 msvc_flags(){
2654     msvc_common_flags "$@"
2655     for flag; do
2656         case $flag in
2657             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2658                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2659                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2660                                        -wd4273 ;;
2661         esac
2662     done
2663 }
2664
2665 icl_flags(){
2666     msvc_common_flags "$@"
2667     for flag; do
2668         case $flag in
2669             # Despite what Intel's documentation says -Wall, which is supported
2670             # on Windows, does enable remarks so disable them here.
2671             -Wall)                echo $flag -Qdiag-disable:remark ;;
2672             -std=c99)             echo -Qstd=c99 ;;
2673         esac
2674     done
2675 }
2676
2677 pgi_flags(){
2678     for flag; do
2679         case $flag in
2680             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2681             -fomit-frame-pointer) echo -Mnoframe ;;
2682             -g)                   echo -gopt ;;
2683             *)                    echo $flag ;;
2684         esac
2685     done
2686 }
2687
2688 suncc_flags(){
2689     for flag; do
2690         case $flag in
2691             -march=*|-mcpu=*)
2692                 case "${flag#*=}" in
2693                     native)                   echo -xtarget=native       ;;
2694                     v9|niagara)               echo -xarch=sparc          ;;
2695                     ultrasparc)               echo -xarch=sparcvis       ;;
2696                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2697                     i586|pentium)             echo -xchip=pentium        ;;
2698                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2699                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2700                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2701                     pentium4*)          echo -xtarget=pentium4           ;;
2702                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2703                     *-sse3)             echo -xarch=sse3                 ;;
2704                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2705                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2706                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2707                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2708                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2709                     k8|opteron|athlon64|athlon-fx)
2710                                                echo -xarch=sse2a         ;;
2711                     athlon*)                   echo -xarch=pentium_proa  ;;
2712                 esac
2713                 ;;
2714             -std=c99)             echo -xc99              ;;
2715             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2716             -fPIC)                echo -KPIC -xcode=pic32 ;;
2717             -W*,*)                echo $flag              ;;
2718             -f*-*|-W*|-mimpure-text)                      ;;
2719             -shared)              echo -G                 ;;
2720             *)                    echo $flag              ;;
2721         esac
2722     done
2723 }
2724
2725 tms470_flags(){
2726     for flag; do
2727         case $flag in
2728             -march=*|-mcpu=*)
2729                 case "${flag#*=}" in
2730                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2731                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2732                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2733                     armv6*|arm11*)          echo -mv=6   ;;
2734                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2735                                             echo -mv=5e  ;;
2736                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2737                 esac
2738                 ;;
2739             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2740             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2741             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2742             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2743             -msoft-float)   echo --float_support=vfplib       ;;
2744             -O[0-3]|-mf=*)  echo $flag                        ;;
2745             -g)             echo -g -mn                       ;;
2746             -pds=*)         echo $flag                        ;;
2747             -D*|-I*)        echo $flag                        ;;
2748             --gcc|--abi=*)  echo $flag                        ;;
2749             -me)            echo $flag                        ;;
2750         esac
2751     done
2752 }
2753
2754 probe_cc(){
2755     pfx=$1
2756     _cc=$2
2757
2758     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2759     unset _ld_o _ldflags _ld_lib _ld_path
2760     unset _depflags _DEPCMD _DEPFLAGS
2761     _flags_filter=echo
2762
2763     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2764         _type=llvm_gcc
2765         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2766         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2767         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2768         _cflags_speed='-O3'
2769         _cflags_size='-Os'
2770     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2771         _type=gcc
2772         gcc_version=$($_cc --version | head -n1)
2773         gcc_basever=$($_cc -dumpversion)
2774         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2775         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2776         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2777         if ! $_cc -dumpversion | grep -q '^2\.'; then
2778             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2779         fi
2780         _cflags_speed='-O3'
2781         _cflags_size='-Os'
2782     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2783         _type=icc
2784         _ident=$($_cc --version | head -n1)
2785         _depflags='-MMD'
2786         _cflags_speed='-O3'
2787         _cflags_size='-Os'
2788         _cflags_noopt='-O1'
2789     elif $_cc -v 2>&1 | grep -q xlc; then
2790         _type=xlc
2791         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2792         _cflags_speed='-O5'
2793         _cflags_size='-O5 -qcompact'
2794     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2795         _type=ccc
2796         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2797         _DEPFLAGS='-M'
2798         _cflags_speed='-fast'
2799         _cflags_size='-O1'
2800         _flags_filter=ccc_flags
2801     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2802         test -d "$sysroot" || die "No valid sysroot specified."
2803         _type=armcc
2804         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2805         armcc_conf="$PWD/armcc.conf"
2806         $_cc --arm_linux_configure                 \
2807              --arm_linux_config_file="$armcc_conf" \
2808              --configure_sysroot="$sysroot"        \
2809              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2810              die "Error creating armcc configuration file."
2811         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2812         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2813         as_default="${cross_prefix}gcc"
2814         _depflags='-MMD'
2815         _cflags_speed='-O3'
2816         _cflags_size='-Os'
2817     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2818         _type=tms470
2819         _ident=$($_cc -version | head -n1 | tr -s ' ')
2820         _flags='--gcc --abi=eabi -me'
2821         _cc_e='-ppl -fe=$@'
2822         _cc_o='-fe=$@'
2823         _depflags='-ppa -ppd=$(@:.o=.d)'
2824         _cflags_speed='-O3 -mf=5'
2825         _cflags_size='-O3 -mf=2'
2826         _flags_filter=tms470_flags
2827     elif $_cc -v 2>&1 | grep -q clang; then
2828         _type=clang
2829         _ident=$($_cc --version | head -n1)
2830         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2831         _cflags_speed='-O3'
2832         _cflags_size='-Os'
2833     elif $_cc -V 2>&1 | grep -q Sun; then
2834         _type=suncc
2835         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2836         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2837         _DEPFLAGS='-xM1 -xc99'
2838         _ldflags='-std=c99'
2839         _cflags_speed='-O5'
2840         _cflags_size='-O5 -xspace'
2841         _flags_filter=suncc_flags
2842     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2843         _type=pathscale
2844         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2845         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2846         _cflags_speed='-O2'
2847         _cflags_size='-Os'
2848         _flags_filter='filter_out -Wdisabled-optimization'
2849     elif $_cc -v 2>&1 | grep -q Open64; then
2850         _type=open64
2851         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2852         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2853         _cflags_speed='-O2'
2854         _cflags_size='-Os'
2855         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2856     elif $_cc -V 2>&1 | grep -q Portland; then
2857         _type=pgi
2858         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2859         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2860         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2861         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2862         _cflags_noopt="-O1"
2863         _flags_filter=pgi_flags
2864     elif $_cc 2>&1 | grep -q Microsoft; then
2865         _type=msvc
2866         _ident=$($cc 2>&1 | head -n1)
2867         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2868         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2869         _cflags_speed="-O2"
2870         _cflags_size="-O1"
2871         if $_cc 2>&1 | grep -q Linker; then
2872             _ld_o='-out:$@'
2873         else
2874             _ld_o='-Fe$@'
2875         fi
2876         _cc_o='-Fo$@'
2877         _cc_e='-P -Fi$@'
2878         _flags_filter=msvc_flags
2879         _ld_lib='lib%.a'
2880         _ld_path='-libpath:'
2881         _flags='-nologo'
2882         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2883         if [ $pfx = hostcc ]; then
2884             append _cflags -Dsnprintf=_snprintf
2885         fi
2886     elif $_cc 2>&1 | grep -q Intel; then
2887         _type=icl
2888         _ident=$($cc 2>&1 | head -n1)
2889         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2890         # Not only is O3 broken on 13.x+ but it is slower on all previous
2891         # versions (tested) as well.
2892         _cflags_speed="-O2"
2893         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2894         if $_cc 2>&1 | grep -q Linker; then
2895             _ld_o='-out:$@'
2896         else
2897             _ld_o='-Fe$@'
2898         fi
2899         _cc_o='-Fo$@'
2900         _cc_e='-P'
2901         _flags_filter=icl_flags
2902         _ld_lib='lib%.a'
2903         _ld_path='-libpath:'
2904         # -Qdiag-error to make icl error when seeing certain unknown arguments
2905         _flags='-nologo -Qdiag-error:4044,10157'
2906         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2907         # with MSVC which enables it by default.
2908         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2909         if [ $pfx = hostcc ]; then
2910             append _cflags -Dsnprintf=_snprintf
2911         fi
2912     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2913         _type=cparser
2914         _ident=$($_cc --version | head -n1)
2915         _depflags='-MMD'
2916         _cflags_speed='-O4'
2917         _cflags_size='-O2'
2918         _flags_filter=cparser_flags
2919     fi
2920
2921     eval ${pfx}_type=\$_type
2922     eval ${pfx}_ident=\$_ident
2923 }
2924
2925 set_ccvars(){
2926     eval ${1}_C=\${_cc_c-\${${1}_C}}
2927     eval ${1}_E=\${_cc_e-\${${1}_E}}
2928     eval ${1}_O=\${_cc_o-\${${1}_O}}
2929
2930     if [ -n "$_depflags" ]; then
2931         eval ${1}_DEPFLAGS=\$_depflags
2932     else
2933         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2934         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2935         eval DEP${1}FLAGS=\$_flags
2936     fi
2937 }
2938
2939 probe_cc cc "$cc"
2940 cflags_filter=$_flags_filter
2941 cflags_speed=$_cflags_speed
2942 cflags_size=$_cflags_size
2943 cflags_noopt=$_cflags_noopt
2944 add_cflags $_flags $_cflags
2945 cc_ldflags=$_ldflags
2946 set_ccvars CC
2947
2948 probe_cc hostcc "$host_cc"
2949 host_cflags_filter=$_flags_filter
2950 add_host_cflags  $_flags $_cflags
2951 set_ccvars HOSTCC
2952
2953 test -n "$cc_type" && enable $cc_type ||
2954     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2955
2956 : ${as_default:=$cc}
2957 : ${dep_cc_default:=$cc}
2958 : ${ld_default:=$cc}
2959 : ${host_ld_default:=$host_cc}
2960 set_default ar as dep_cc ld host_ld
2961
2962 probe_cc as "$as"
2963 asflags_filter=$_flags_filter
2964 add_asflags $_flags $_cflags
2965 set_ccvars AS
2966
2967 probe_cc ld "$ld"
2968 ldflags_filter=$_flags_filter
2969 add_ldflags $_flags $_ldflags
2970 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2971 LD_O=${_ld_o-$LD_O}
2972 LD_LIB=${_ld_lib-$LD_LIB}
2973 LD_PATH=${_ld_path-$LD_PATH}
2974
2975 probe_cc hostld "$host_ld"
2976 host_ldflags_filter=$_flags_filter
2977 add_host_ldflags $_flags $_ldflags
2978 HOSTLD_O=${_ld_o-$HOSTLD_O}
2979
2980 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2981     probe_cc depcc "$dep_cc"
2982     CCDEP=${_DEPCMD:-$DEPCMD}
2983     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2984     DEPCCFLAGS=$_flags
2985 fi
2986
2987 if $ar 2>&1 | grep -q Microsoft; then
2988     arflags="-nologo"
2989     ar_o='-out:$@'
2990 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2991     arflags="rq"
2992     ar_o='$@'
2993 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2994     arflags='-Xany -r -c'
2995     ar_o='$@'
2996 else
2997     arflags="rc"
2998     ar_o='$@'
2999 fi
3000
3001 add_cflags $extra_cflags
3002 add_asflags $extra_cflags
3003
3004 if test -n "$sysroot"; then
3005     case "$cc_type" in
3006         gcc|llvm_gcc|clang)
3007             add_cppflags --sysroot="$sysroot"
3008             add_ldflags --sysroot="$sysroot"
3009         ;;
3010         tms470)
3011             add_cppflags -I"$sysinclude"
3012             add_ldflags  --sysroot="$sysroot"
3013         ;;
3014     esac
3015 fi
3016
3017 if test "$cpu" = host; then
3018     enabled cross_compile &&
3019         die "--cpu=host makes no sense when cross-compiling."
3020
3021     case "$cc_type" in
3022         gcc|llvm_gcc)
3023             check_native(){
3024                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3025                 sed -n "/cc1.*$1=/{
3026                             s/.*$1=\\([^ ]*\\).*/\\1/
3027                             p
3028                             q
3029                         }" $TMPE
3030             }
3031             cpu=$(check_native -march || check_native -mcpu)
3032         ;;
3033     esac
3034
3035     test "${cpu:-host}" = host &&
3036         die "--cpu=host not supported with compiler $cc"
3037 fi
3038
3039 # Deal with common $arch aliases
3040 case "$arch" in
3041     aarch64|arm64)
3042         arch="aarch64"
3043     ;;
3044     arm*)
3045         arch="arm"
3046     ;;
3047     mips*|IP*)
3048         arch="mips"
3049     ;;
3050     parisc*|hppa*)
3051         arch="parisc"
3052     ;;
3053     "Power Macintosh"|ppc*|powerpc*)
3054         arch="ppc"
3055     ;;
3056     s390|s390x)
3057         arch="s390"
3058     ;;
3059     sh4|sh)
3060         arch="sh4"
3061     ;;
3062     sun4u|sparc*)
3063         arch="sparc"
3064     ;;
3065     tilegx|tile-gx)
3066         arch="tilegx"
3067     ;;
3068     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3069         arch="x86"
3070     ;;
3071 esac
3072
3073 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3074 enable $arch
3075
3076 # Add processor-specific flags
3077 if enabled aarch64; then
3078
3079     case $cpu in
3080         armv*)
3081             cpuflags="-march=$cpu"
3082         ;;
3083         *)
3084             cpuflags="-mcpu=$cpu"
3085         ;;
3086     esac
3087
3088 elif enabled alpha; then
3089
3090     cpuflags="-mcpu=$cpu"
3091
3092 elif enabled arm; then
3093
3094     check_arm_arch() {
3095         check_cpp_condition stddef.h \
3096             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3097             $cpuflags
3098     }
3099
3100     probe_arm_arch() {
3101         if   check_arm_arch 4;        then echo armv4;
3102         elif check_arm_arch 4T;       then echo armv4t;
3103         elif check_arm_arch 5;        then echo armv5;
3104         elif check_arm_arch 5E;       then echo armv5e;
3105         elif check_arm_arch 5T;       then echo armv5t;
3106         elif check_arm_arch 5TE;      then echo armv5te;
3107         elif check_arm_arch 5TEJ;     then echo armv5te;
3108         elif check_arm_arch 6;        then echo armv6;
3109         elif check_arm_arch 6J;       then echo armv6j;
3110         elif check_arm_arch 6K;       then echo armv6k;
3111         elif check_arm_arch 6Z;       then echo armv6z;
3112         elif check_arm_arch 6ZK;      then echo armv6zk;
3113         elif check_arm_arch 6T2;      then echo armv6t2;
3114         elif check_arm_arch 7;        then echo armv7;
3115         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3116         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3117         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3118         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3119         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3120         fi
3121     }
3122
3123     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3124
3125     case $cpu in
3126         armv*)
3127             cpuflags="-march=$cpu"
3128             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3129         ;;
3130         *)
3131             cpuflags="-mcpu=$cpu"
3132             case $cpu in
3133                 cortex-a*)                               subarch=armv7a  ;;
3134                 cortex-r*)                               subarch=armv7r  ;;
3135                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3136                 arm11*)                                  subarch=armv6   ;;
3137                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3138                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3139                 *)                             subarch=$(probe_arm_arch) ;;
3140             esac
3141         ;;
3142     esac
3143
3144     case "$subarch" in
3145         armv5t*)    enable fast_clz                ;;
3146         armv[6-8]*) enable fast_clz fast_unaligned ;;
3147     esac
3148
3149 elif enabled avr32; then
3150
3151     case $cpu in
3152         ap7[02]0[0-2])
3153             subarch="avr32_ap"
3154             cpuflags="-mpart=$cpu"
3155         ;;
3156         ap)
3157             subarch="avr32_ap"
3158             cpuflags="-march=$cpu"
3159         ;;
3160         uc3[ab]*)
3161             subarch="avr32_uc"
3162             cpuflags="-mcpu=$cpu"
3163         ;;
3164         uc)
3165             subarch="avr32_uc"
3166             cpuflags="-march=$cpu"
3167         ;;
3168     esac
3169
3170 elif enabled bfin; then
3171
3172     cpuflags="-mcpu=$cpu"
3173
3174 elif enabled mips; then
3175
3176     cpuflags="-march=$cpu"
3177
3178 elif enabled ppc; then
3179
3180     disable ldbrx
3181
3182     case $(tolower $cpu) in
3183         601|ppc601|powerpc601)
3184             cpuflags="-mcpu=601"
3185             disable altivec
3186         ;;
3187         603*|ppc603*|powerpc603*)
3188             cpuflags="-mcpu=603"
3189             disable altivec
3190         ;;
3191         604*|ppc604*|powerpc604*)
3192             cpuflags="-mcpu=604"
3193             disable altivec
3194         ;;
3195         g3|75*|ppc75*|powerpc75*)
3196             cpuflags="-mcpu=750"
3197             disable altivec
3198         ;;
3199         g4|745*|ppc745*|powerpc745*)
3200             cpuflags="-mcpu=7450"
3201         ;;
3202         74*|ppc74*|powerpc74*)
3203             cpuflags="-mcpu=7400"
3204         ;;
3205         g5|970|ppc970|powerpc970)
3206             cpuflags="-mcpu=970"
3207         ;;
3208         power[3-7]*)
3209             cpuflags="-mcpu=$cpu"
3210         ;;
3211         cell)
3212             cpuflags="-mcpu=cell"
3213             enable ldbrx
3214         ;;
3215         e500mc)
3216             cpuflags="-mcpu=e500mc"
3217             disable altivec
3218         ;;
3219         e500v2)
3220             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3221             disable altivec
3222             disable dcbzl
3223         ;;
3224         e500)
3225             cpuflags="-mcpu=8540 -mhard-float"
3226             disable altivec
3227             disable dcbzl
3228         ;;
3229     esac
3230
3231 elif enabled sparc; then
3232
3233     case $cpu in
3234         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3235             cpuflags="-mcpu=$cpu"
3236         ;;
3237         ultrasparc*|niagara[234])
3238             cpuflags="-mcpu=$cpu"
3239         ;;
3240     esac
3241
3242 elif enabled x86; then
3243
3244     case $cpu in
3245         i[345]86|pentium)
3246             cpuflags="-march=$cpu"
3247             disable mmx
3248         ;;
3249         # targets that do NOT support nopl and conditional mov (cmov)
3250         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3251             cpuflags="-march=$cpu"
3252             disable i686
3253         ;;
3254         # targets that do support nopl and conditional mov (cmov)
3255         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3256             cpuflags="-march=$cpu"
3257             enable i686
3258             enable fast_cmov
3259         ;;
3260         # targets that do support conditional mov but on which it's slow
3261         pentium4|pentium4m|prescott|nocona)
3262             cpuflags="-march=$cpu"
3263             enable i686
3264             disable fast_cmov
3265         ;;
3266     esac
3267
3268 fi
3269
3270 if [ "$cpu" != generic ]; then
3271     add_cflags  $cpuflags
3272     add_asflags $cpuflags
3273 fi
3274
3275 # compiler sanity check
3276 check_exec <<EOF
3277 int main(void){ return 0; }
3278 EOF
3279 if test "$?" != 0; then
3280     echo "$cc is unable to create an executable file."
3281     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3282         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3283         echo "Only do this if you know what cross compiling means."
3284     fi
3285     die "C compiler test failed."
3286 fi
3287
3288 add_cppflags -D_ISOC99_SOURCE
3289 check_cflags -std=c99
3290 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3291 #include <stdlib.h>
3292 EOF
3293 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3294 #include <stdlib.h>
3295 EOF
3296
3297 add_host_cppflags -D_ISOC99_SOURCE
3298 check_host_cflags -std=c99
3299 check_host_cflags -Wall
3300 check_host_cflags -O3
3301
3302 check_64bit(){
3303     arch32=$1
3304     arch64=$2
3305     expr=$3
3306     check_code cc "" "int test[2*($expr) - 1]" &&
3307         subarch=$arch64 || subarch=$arch32
3308 }
3309
3310 case "$arch" in
3311     aarch64|alpha|ia64)
3312         spic=$shared
3313     ;;
3314     mips)
3315         check_64bit mips mips64 '_MIPS_SIM > 1'
3316         spic=$shared
3317     ;;
3318     parisc)
3319         check_64bit parisc parisc64 'sizeof(void *) > 4'
3320         spic=$shared
3321     ;;
3322     ppc)
3323         check_64bit ppc ppc64 'sizeof(void *) > 4'
3324         spic=$shared
3325     ;;
3326     s390)
3327         check_64bit s390 s390x 'sizeof(void *) > 4'
3328         spic=$shared
3329     ;;
3330     sparc)
3331         check_64bit sparc sparc64 'sizeof(void *) > 4'
3332         spic=$shared
3333     ;;
3334     x86)
3335         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3336         if test "$subarch" = "x86_64"; then
3337             spic=$shared
3338         fi
3339     ;;
3340 esac
3341
3342 enable $subarch
3343 enabled spic && enable_weak pic
3344
3345 # OS specific
3346 case $target_os in
3347     aix)
3348         SHFLAGS=-shared
3349         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3350         enabled shared && add_ldflags -Wl,-brtl
3351         ;;
3352     android)
3353         disable symver
3354         SLIB_INSTALL_NAME='$(SLIBNAME)'
3355         SLIB_INSTALL_LINKS=
3356         # soname not set on purpose
3357         SHFLAGS=-shared
3358         ;;
3359     haiku)
3360         prefix_default="/boot/common"
3361         network_extralibs="-lnetwork"
3362         host_libs=
3363         ;;
3364     sunos)
3365         SHFLAGS='-shared -Wl,-h,$$(@F)'
3366         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3367         network_extralibs="-lsocket -lnsl"
3368         # When using suncc to build, the Solaris linker will mark
3369         # an executable with each instruction set encountered by
3370         # the Solaris assembler.  As our libraries contain their own
3371         # guards for processor-specific code, instead suppress
3372         # generation of the HWCAPS ELF section on Solaris x86 only.
3373         enabled_all suncc x86 &&
3374             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3375             add_ldflags -Wl,-M,mapfile
3376         nm_default='nm -P -g'
3377         ;;
3378     netbsd)
3379         disable symver
3380         oss_indev_extralibs="-lossaudio"
3381         oss_outdev_extralibs="-lossaudio"
3382         ;;
3383     openbsd|bitrig)
3384         disable symver
3385         SHFLAGS='-shared'
3386         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3387         SLIB_INSTALL_LINKS=
3388         oss_indev_extralibs="-lossaudio"
3389         oss_outdev_extralibs="-lossaudio"
3390         ;;
3391     dragonfly)
3392         disable symver
3393         ;;
3394     freebsd)
3395         ;;
3396     bsd/os)
3397         add_extralibs -lpoll -lgnugetopt
3398         ;;
3399     darwin)
3400         gas="gas-preprocessor.pl $cc"
3401         enabled ppc && add_asflags -force_cpusubtype_ALL
3402         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3403         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3404         add_ldflags -Wl,-dynamic,-search_paths_first
3405         SLIBSUF=".dylib"
3406         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3407         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3408         objformat="macho"
3409         enabled x86_64 && objformat="macho64"
3410         enabled_any pic shared ||
3411             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3412         ;;
3413     mingw32*)
3414         if test $target_os = "mingw32ce"; then
3415             disable network
3416         else
3417             target_os=mingw32
3418         fi
3419         LIBTARGET=i386
3420         if enabled x86_64; then
3421             LIBTARGET="i386:x86-64"
3422         elif enabled arm; then
3423             LIBTARGET=arm-wince
3424         fi
3425         check_ldflags -Wl,--nxcompat
3426         check_ldflags -Wl,--dynamicbase
3427         shlibdir_default="$bindir_default"
3428         SLIBPREF=""
3429         SLIBSUF=".dll"
3430         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3431         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3432         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3433         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3434         SLIB_INSTALL_LINKS=
3435         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3436         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3437         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3438         objformat="win32"
3439         dlltool="${cross_prefix}dlltool"
3440         ranlib=:
3441         enable dos_paths
3442         ;;
3443     win32|win64)
3444         disable symver
3445         if enabled shared; then
3446             # Link to the import library instead of the normal static library
3447             # for shared libs.
3448             LD_LIB='%.lib'
3449             # Cannot build both shared and static libs with MSVC or icl.
3450             disable static
3451         fi
3452         shlibdir_default="$bindir_default"
3453         SLIBPREF=""
3454         SLIBSUF=".dll"
3455         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3456         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3457         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3458         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3459         SLIB_INSTALL_LINKS=
3460         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3461         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3462         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3463         objformat="win32"
3464         ranlib=:
3465         enable dos_paths
3466         ;;
3467     cygwin*)
3468         target_os=cygwin
3469         shlibdir_default="$bindir_default"
3470         SLIBPREF="cyg"
3471         SLIBSUF=".dll"
3472         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3473         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3474         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3475         SLIB_INSTALL_LINKS=
3476         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3477         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3478         objformat="win32"
3479         enable dos_paths
3480         ;;
3481     *-dos|freedos|opendos)
3482         network_extralibs="-lsocket"
3483         objformat="coff"
3484         enable dos_paths
3485         add_cppflags -U__STRICT_ANSI__
3486         ;;
3487     linux)
3488         enable dv1394
3489         ;;
3490     irix*)
3491         target_os=irix
3492         ranlib="echo ignoring ranlib"
3493         ;;
3494     os/2*)
3495         ln_s="cp -f"
3496         objformat="aout"
3497         add_cppflags -D_GNU_SOURCE
3498         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3499         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3500         LIBSUF="_s.a"
3501         SLIBPREF=""
3502         SLIBSUF=".dll"
3503         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3504         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3505         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3506             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3507             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3508             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3509             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3510             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3511         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3512             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3513         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3514         enable dos_paths
3515         ;;
3516     gnu/kfreebsd)
3517         add_cppflags -D_BSD_SOURCE
3518         ;;
3519     gnu)
3520         ;;
3521     qnx)
3522         add_cppflags -D_QNX_SOURCE
3523         network_extralibs="-lsocket"
3524         ;;
3525     symbian)
3526         SLIBSUF=".dll"
3527         enable dos_paths
3528         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3529         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3530         add_ldflags -Wl,--target1-abs,--no-undefined \
3531                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3532                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3533         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3534                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3535                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3536         ;;
3537     osf1)
3538         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3539         ;;
3540     minix)
3541         ;;
3542     plan9)
3543         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3544                      -D_REENTRANT_SOURCE        \
3545                      -D_RESEARCH_SOURCE         \
3546                      -DFD_SETSIZE=96            \
3547                      -DHAVE_SOCK_OPTS
3548         add_compat strtod.o strtod=avpriv_strtod
3549         network_extralibs='-lbsd'
3550         exeobjs=compat/plan9/main.o
3551         cp_f='cp'
3552         ;;
3553     none)
3554         ;;
3555     *)
3556         die "Unknown OS '$target_os'."
3557         ;;
3558 esac
3559
3560 # determine libc flavour
3561
3562 probe_libc(){
3563     pfx=$1
3564     pfx_no_=${pfx%_}
3565     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3566     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3567         eval ${pfx}libc_type=uclibc
3568         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3569     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3570         eval ${pfx}libc_type=glibc
3571         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3572     # MinGW headers can be installed on Cygwin, so check for newlib first.
3573     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3574         eval ${pfx}libc_type=newlib
3575         add_${pfx}cppflags -U__STRICT_ANSI__
3576     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3577     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3578         eval ${pfx}libc_type=mingw64
3579         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3580         eval test \$${pfx_no_}cc_type = "gcc" &&
3581             add_${pfx}cppflags -D__printf__=__gnu_printf__
3582     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3583          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3584         eval ${pfx}libc_type=mingw32
3585         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3586             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3587             die "ERROR: MinGW32 runtime version must be >= 3.15."
3588         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3589         eval test \$${pfx_no_}cc_type = "gcc" &&
3590             add_${pfx}cppflags -D__printf__=__gnu_printf__
3591     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3592         eval ${pfx}libc_type=msvcrt
3593         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3594         # 0x601 by default unless something else is set by the user.
3595         # This can easily lead to us detecting functions only present
3596         # in such new versions and producing binaries requiring windows 7.0.
3597         # Therefore explicitly set the default to XP unless the user has
3598         # set something else on the command line.
3599         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3600             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3601     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3602         eval ${pfx}libc_type=klibc
3603     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3604         eval ${pfx}libc_type=bionic
3605     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3606         eval ${pfx}libc_type=solaris
3607         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3608     fi
3609 }
3610
3611 probe_libc
3612 test -n "$libc_type" && enable libc_$libc_type
3613 probe_libc host_
3614 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3615
3616 case $libc_type in
3617     bionic)
3618         add_compat strtod.o strtod=avpriv_strtod
3619         ;;
3620     msvcrt)
3621         add_compat strtod.o strtod=avpriv_strtod
3622         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3623                                      _snprintf=avpriv_snprintf  \
3624                                      vsnprintf=avpriv_vsnprintf
3625         ;;
3626 esac
3627
3628 # hacks for compiler/libc/os combinations
3629
3630 if enabled_all tms470 libc_glibc; then
3631     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3632     add_cppflags -D__USER_LABEL_PREFIX__=
3633     add_cppflags -D__builtin_memset=memset
3634     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3635     add_cflags   -pds=48    # incompatible redefinition of macro
3636 fi
3637
3638 if enabled_all ccc libc_glibc; then
3639     add_ldflags -Wl,-z,now  # calls to libots crash without this
3640 fi
3641
3642 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3643     add_cppflags '-I\$(SRC_PATH)/compat/float'
3644
3645 esc(){
3646     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3647 }
3648
3649 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3650
3651 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3652
3653 set_default $PATHS_LIST
3654 set_default nm
3655
3656 # we need to build at least one lib type
3657 if ! enabled_any static shared; then
3658     cat <<EOF
3659 At least one library type must be built.
3660 Specify --enable-static to build the static libraries or --enable-shared to
3661 build the shared libraries as well. To only build the shared libraries specify
3662 --disable-static in addition to --enable-shared.
3663 EOF
3664     exit 1;
3665 fi
3666
3667 die_license_disabled() {
3668     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3669 }
3670
3671 die_license_disabled gpl libcdio
3672 die_license_disabled gpl libx264
3673 die_license_disabled gpl libx265
3674 die_license_disabled gpl libxavs
3675 die_license_disabled gpl libxvid
3676 die_license_disabled gpl x11grab
3677
3678 die_license_disabled nonfree libfaac
3679 die_license_disabled nonfree libfdk_aac
3680 die_license_disabled nonfree openssl
3681
3682 die_license_disabled version3 libopencore_amrnb
3683 die_license_disabled version3 libopencore_amrwb
3684 die_license_disabled version3 libvo_aacenc
3685 die_license_disabled version3 libvo_amrwbenc
3686
3687 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3688
3689 disabled optimizations || check_cflags -fomit-frame-pointer
3690
3691 enable_weak_pic() {
3692     disabled pic && return
3693     enable pic
3694     add_cppflags -DPIC
3695     case "$target_os" in
3696     mingw*|cygwin*)
3697         ;;
3698     *)
3699         add_cflags -fPIC
3700         ;;
3701     esac
3702     add_asflags  -fPIC
3703 }
3704
3705 enabled pic && enable_weak_pic
3706
3707 check_cc <<EOF || die "Symbol mangling check failed."
3708 int ff_extern;
3709 EOF
3710 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3711 extern_prefix=${sym%%ff_extern*}
3712
3713 check_cc <<EOF && enable_weak inline_asm
3714 void foo(void) { __asm__ volatile ("" ::); }
3715 EOF
3716
3717 _restrict=
3718 for restrict_keyword in restrict __restrict__ __restrict; do
3719     check_cc <<EOF && _restrict=$restrict_keyword && break
3720 void foo(char * $restrict_keyword p);
3721 EOF
3722 done
3723
3724 check_cc <<EOF && enable pragma_deprecated
3725 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3726 EOF
3727
3728 check_cc <<EOF && enable attribute_packed
3729 struct { int x; } __attribute__((packed)) x;
3730 EOF
3731
3732 check_cc <<EOF && enable attribute_may_alias
3733 union { int x; } __attribute__((may_alias)) x;
3734 EOF
3735
3736 check_cc <<EOF || die "endian test failed"
3737 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3738 EOF
3739 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3740
3741
3742 if enabled asm; then
3743     enabled     arm         && nogas=die
3744     enabled_all ppc altivec && nogas=warn
3745     as=${gas:=$as}
3746     check_as <<EOF && enable gnu_as || \
3747         $nogas "GNU assembler not found, install gas-preprocessor"
3748 .macro m n
3749 \n: .int 0
3750 .endm
3751 m x
3752 EOF
3753
3754     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
3755 .altmacro
3756 EOF
3757
3758     check_as <<EOF && enable as_func
3759 .func test
3760 .endfunc
3761 EOF
3762 fi
3763
3764 check_inline_asm inline_asm_labels '"1:\n"'
3765
3766 if enabled aarch64; then
3767     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3768     # internal assembler in clang 3.3 does not support this instruction
3769     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3770     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3771
3772     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3773
3774 elif enabled alpha; then
3775
3776     check_cflags -mieee
3777
3778 elif enabled arm; then
3779
3780     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3781     enabled thumb && check_cflags -mthumb || check_cflags -marm
3782
3783     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3784         enable vfp_args
3785     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3786         case "${cross_prefix:-$cc}" in
3787             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3788             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3789 __asm__ (".eabi_attribute 28, 1");
3790 int main(void) { return 0; }
3791 EOF
3792         esac
3793         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3794     fi
3795
3796     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3797     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3798     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3799     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3800     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3801     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3802
3803     [ $target_os = linux ] ||
3804         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3805             $ARCH_EXT_LIST_ARM
3806
3807     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3808
3809     check_as <<EOF && enable as_dn_directive
3810 ra .dn d0.i16
3811 .unreq ra
3812 EOF
3813
3814     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3815
3816 elif enabled mips; then
3817
3818     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3819
3820 elif enabled parisc; then
3821
3822     if enabled gcc; then
3823         case $($cc -dumpversion) in
3824             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3825         esac
3826     fi
3827
3828 elif enabled ppc; then
3829
3830     enable local_aligned_8 local_aligned_16
3831
3832     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3833     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3834     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3835     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3836
3837     # AltiVec flags: The FSF version of GCC differs from the Apple version
3838     if enabled altivec; then
3839         check_cflags -maltivec -mabi=altivec &&
3840         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3841         check_cflags -faltivec
3842
3843         # check if our compiler supports Motorola AltiVec C API
3844         check_cc <<EOF || disable altivec
3845 $inc_altivec_h
3846 int main(void) {
3847     vector signed int v1 = (vector signed int) { 0 };
3848     vector signed int v2 = (vector signed int) { 1 };
3849     v1 = vec_add(v1, v2);
3850     return 0;
3851 }
3852 EOF
3853
3854         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3855     fi
3856
3857 elif enabled x86; then
3858
3859     check_builtin rdtsc    intrin.h   "__rdtsc()"
3860     check_builtin mm_empty mmintrin.h "_mm_empty()"
3861
3862     enable local_aligned_8 local_aligned_16
3863
3864     # check whether EBP is available on x86
3865     # As 'i' is stored on the stack, this program will crash
3866     # if the base pointer is used to access it because the
3867     # base pointer is cleared in the inline assembly code.
3868     check_exec_crash <<EOF && enable ebp_available
3869 volatile int i=0;
3870 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3871 return i;
3872 EOF
3873
3874     # check whether EBX is available on x86
3875     check_inline_asm ebx_available '""::"b"(0)' &&
3876         check_inline_asm ebx_available '"":::"%ebx"'
3877
3878     # check whether xmm clobbers are supported
3879     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3880
3881     # check whether binutils is new enough to compile SSSE3/MMXEXT
3882     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3883     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3884
3885     if ! disabled_any asm mmx yasm; then
3886         if check_cmd $yasmexe --version; then
3887             enabled x86_64 && yasm_extra="-m amd64"
3888             yasm_debug="-g dwarf2"
3889         elif check_cmd nasm -v; then
3890             yasmexe=nasm
3891             yasm_debug="-g -F dwarf"
3892             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3893         fi
3894
3895         YASMFLAGS="-f $objformat $yasm_extra"
3896         enabled pic               && append YASMFLAGS "-DPIC"
3897         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3898         case "$objformat" in
3899             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3900         esac
3901
3902         check_yasm "movbe ecx, [5]" && enable yasm ||
3903             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3904         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3905         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3906         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3907         check_yasm "CPU amdnop" || disable cpunop
3908     fi
3909
3910     case "$cpu" in
3911         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3912             disable fast_clz
3913         ;;
3914     esac
3915
3916 fi
3917
3918 check_ldflags -Wl,--as-needed
3919
3920 if check_func dlopen; then
3921     ldl=
3922 elif check_func dlopen -ldl; then
3923     ldl=-ldl
3924 fi
3925
3926 if ! disabled network; then
3927     check_func getaddrinfo $network_extralibs
3928     check_func getservbyport $network_extralibs
3929     check_func inet_aton $network_extralibs
3930
3931     check_type netdb.h "struct addrinfo"
3932     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3933     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3934     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3935     check_type poll.h "struct pollfd"
3936     check_type netinet/sctp.h "struct sctp_event_subscribe"
3937     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3938     check_type netinet/in.h "struct sockaddr_in6"
3939     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3940     check_type "sys/types.h sys/socket.h" socklen_t
3941
3942     # Prefer arpa/inet.h over winsock2
3943     if check_header arpa/inet.h ; then
3944         check_func closesocket
3945     elif check_header winsock2.h ; then
3946         check_func_headers winsock2.h closesocket -lws2 &&
3947             network_extralibs="-lws2" ||
3948         { check_func_headers winsock2.h closesocket -lws2_32 &&
3949             network_extralibs="-lws2_32"; } || disable winsock2_h network
3950         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3951
3952         check_type ws2tcpip.h socklen_t
3953         check_type ws2tcpip.h "struct addrinfo"
3954         check_type ws2tcpip.h "struct group_source_req"
3955         check_type ws2tcpip.h "struct ip_mreq_source"
3956         check_type ws2tcpip.h "struct ipv6_mreq"
3957         check_type winsock2.h "struct pollfd"
3958         check_struct winsock2.h "struct sockaddr" sa_len
3959         check_type ws2tcpip.h "struct sockaddr_in6"
3960         check_type ws2tcpip.h "struct sockaddr_storage"
3961     else
3962         disable network
3963     fi
3964 fi
3965
3966 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3967 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3968 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3969 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3970
3971 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3972 check_func  ${malloc_prefix}memalign            && enable memalign
3973 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3974
3975 check_func  fcntl
3976 check_func  fork
3977 check_func  gethrtime
3978 check_func  getopt
3979 check_func  getrusage
3980 check_func  gettimeofday
3981 check_func  isatty
3982 check_func  localtime_r
3983 check_func  mach_absolute_time
3984 check_func  mkstemp
3985 check_func  mmap
3986 check_func  mprotect
3987 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3988 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3989 check_func  sched_getaffinity
3990 check_func  setrlimit
3991 check_func  strerror_r
3992 check_func  strptime
3993 check_func  sysconf
3994 check_func  sysctl
3995 check_func  usleep
3996
3997 check_func_headers io.h setmode
3998 check_func_headers stdlib.h getenv
3999
4000 check_func_headers windows.h CoTaskMemFree -lole32
4001 check_func_headers windows.h GetProcessAffinityMask
4002 check_func_headers windows.h GetProcessTimes
4003 check_func_headers windows.h GetSystemTimeAsFileTime
4004 check_func_headers windows.h MapViewOfFile
4005 check_func_headers windows.h SetConsoleTextAttribute
4006 check_func_headers windows.h Sleep
4007 check_func_headers windows.h VirtualAlloc
4008
4009 check_header direct.h
4010 check_header dlfcn.h
4011 check_header dxva.h
4012 check_header dxva2api.h
4013 check_header io.h
4014 check_header mach/mach_time.h
4015 check_header malloc.h
4016 check_header poll.h
4017 check_header sys/mman.h
4018 check_header sys/param.h
4019 check_header sys/resource.h
4020 check_header sys/select.h
4021 check_header sys/time.h
4022 check_header sys/un.h
4023 check_header unistd.h
4024 check_header vdpau/vdpau.h
4025 check_header vdpau/vdpau_x11.h
4026 check_header VideoDecodeAcceleration/VDADecoder.h
4027 check_header windows.h
4028 check_header X11/extensions/XvMClib.h
4029
4030 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4031 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4032 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4033
4034 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4035
4036 if ! disabled w32threads && ! enabled pthreads; then
4037     check_func_headers "windows.h process.h" _beginthreadex &&
4038         enable w32threads || disable w32threads
4039 fi
4040
4041 # check for some common methods of building with pthread support
4042 # do this before the optional library checks as some of them require pthreads
4043 if ! disabled pthreads && ! enabled w32threads; then
4044     enable pthreads
4045     if check_func pthread_join -pthread; then
4046         add_cflags -pthread
4047         add_extralibs -pthread
4048     elif check_func pthread_join -pthreads; then
4049         add_cflags -pthreads
4050         add_extralibs -pthreads
4051     elif check_func pthread_join -lpthreadGC2; then
4052         add_extralibs -lpthreadGC2
4053     elif check_lib pthread.h pthread_join -lpthread; then
4054         :
4055     elif ! check_func pthread_join; then
4056         disable pthreads
4057     fi
4058 fi
4059
4060 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4061 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4062
4063 check_lib math.h sin -lm && LIBM="-lm"
4064 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4065
4066 atan2f_args=2
4067 ldexpf_args=2
4068 powf_args=2
4069
4070 for func in $MATH_FUNCS; do
4071     eval check_mathfunc $func \${${func}_args:-1}
4072 done
4073
4074 # these are off by default, so fail if requested and not available
4075 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4076                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4077                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4078 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4079 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4080 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4081 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4082 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4083 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4084 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4085 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4086                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4087                                done || die "ERROR: libgsm not found"; }
4088 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4089 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4090 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4091 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4092 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4093 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4094                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4095 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4096 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4097 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4098 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4099 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4100 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4101 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4102 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4103 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4104 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4105 enabled libvpx            && {
4106     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4107                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4108     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4109                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4110     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4111     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4112 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4113 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4114 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4115                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4116                                die "ERROR: libx264 version must be >= 0.118."; }
4117 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4118                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4119                                die "ERROR: libx265 version must be >= 17."; }
4120 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4121 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4122 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4123                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4124                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4125                                die "ERROR: openssl not found"; }
4126
4127 if enabled gnutls; then
4128     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4129     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4130 fi
4131
4132 # libdc1394 check
4133 if enabled libdc1394; then
4134     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4135         enable libdc1394_2; } ||
4136     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4137         enable libdc1394_1; } ||
4138     die "ERROR: No version of libdc1394 found "
4139 fi
4140
4141 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4142     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4143     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4144     enable sdl
4145 fi
4146
4147 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4148 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4149
4150 check_header linux/fb.h
4151 check_header linux/videodev2.h
4152 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4153
4154 check_header sys/videoio.h
4155
4156 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4157 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4158 # w32api 3.12 had it defined wrong
4159 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4160
4161 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4162 { check_header dev/bktr/ioctl_meteor.h &&
4163   check_header dev/bktr/ioctl_bt848.h; } ||
4164 { check_header machine/ioctl_meteor.h &&
4165   check_header machine/ioctl_bt848.h; } ||
4166 { check_header dev/video/meteor/ioctl_meteor.h &&
4167   check_header dev/video/bktr/ioctl_bt848.h; } ||
4168 check_header dev/ic/bt8xx.h
4169
4170 check_header sndio.h
4171 check_header sys/soundcard.h
4172 check_header soundcard.h
4173
4174 enabled_any alsa_indev alsa_outdev &&
4175     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4176
4177 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4178     check_func jack_port_get_latency_range -ljack
4179
4180 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4181
4182 if enabled libcdio; then
4183     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4184     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4185 fi
4186
4187 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4188
4189 enabled x11grab                                           &&
4190 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4191 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4192 { enabled xlib || die "ERROR: Xlib not found"; }
4193
4194 enabled vdpau &&
4195     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4196     disable vdpau
4197
4198 enabled vdpau && enabled xlib &&
4199     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4200     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4201     enable vdpau_x11
4202
4203 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4204
4205 # add some useful compiler flags if supported
4206 check_cflags -Wdeclaration-after-statement
4207 check_cflags -Wall
4208 check_cflags -Wdisabled-optimization
4209 check_cflags -Wpointer-arith
4210 check_cflags -Wredundant-decls
4211 check_cflags -Wcast-qual
4212 check_cflags -Wwrite-strings
4213 check_cflags -Wtype-limits
4214 check_cflags -Wundef
4215 check_cflags -Wmissing-prototypes
4216 check_cflags -Wstrict-prototypes
4217 enabled extra_warnings && check_cflags -Winline
4218
4219 check_disable_warning(){
4220     warning_flag=-W${1#-Wno-}
4221     test_cflags $warning_flag && add_cflags $1
4222 }
4223
4224 check_disable_warning -Wno-parentheses
4225 check_disable_warning -Wno-switch
4226 check_disable_warning -Wno-format-zero-length
4227 check_disable_warning -Wno-pointer-sign
4228
4229 # add some linker flags
4230 check_ldflags -Wl,--warn-common
4231 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4232 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4233
4234 # add some strip flags
4235 # -wN '..@*' is more selective than -x, but not available everywhere.
4236 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4237
4238 enabled neon_clobber_test &&
4239     check_ldflags -Wl,--wrap,avcodec_open2              \
4240                   -Wl,--wrap,avcodec_decode_audio4      \
4241                   -Wl,--wrap,avcodec_decode_video2      \
4242                   -Wl,--wrap,avcodec_decode_subtitle2   \
4243                   -Wl,--wrap,avcodec_encode_audio2      \
4244                   -Wl,--wrap,avcodec_encode_video2      \
4245                   -Wl,--wrap,avcodec_encode_subtitle    \
4246                   -Wl,--wrap,avresample_convert ||
4247     disable neon_clobber_test
4248
4249 enabled xmm_clobber_test &&
4250     check_ldflags -Wl,--wrap,avcodec_open2              \
4251                   -Wl,--wrap,avcodec_decode_audio4      \
4252                   -Wl,--wrap,avcodec_decode_video2      \
4253                   -Wl,--wrap,avcodec_decode_subtitle2   \
4254                   -Wl,--wrap,avcodec_encode_audio2      \
4255                   -Wl,--wrap,avcodec_encode_video2      \
4256                   -Wl,--wrap,avcodec_encode_subtitle    \
4257                   -Wl,--wrap,avresample_convert         \
4258                   -Wl,--wrap,sws_scale ||
4259     disable xmm_clobber_test
4260
4261 echo "X{};" > $TMPV
4262 if test_ldflags -Wl,--version-script,$TMPV; then
4263     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4264     check_cc <<EOF && enable symver_asm_label
4265 void ff_foo(void) __asm__ ("av_foo@VERSION");
4266 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4267 EOF
4268     check_cc <<EOF && enable symver_gnu_asm
4269 __asm__(".symver ff_foo,av_foo@VERSION");
4270 void ff_foo(void) {}
4271 EOF
4272 fi
4273
4274 if [ -z "$optflags" ]; then
4275     if enabled small; then
4276         optflags=$cflags_size
4277     elif enabled optimizations; then
4278         optflags=$cflags_speed
4279     else
4280         optflags=$cflags_noopt
4281     fi
4282 fi
4283
4284 check_optflags(){
4285     check_cflags "$@"
4286     enabled lto && check_ldflags "$@"
4287 }
4288
4289
4290 if enabled lto; then
4291     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4292     check_cflags  -flto
4293     check_ldflags -flto $cpuflags
4294 fi
4295
4296 check_optflags $optflags
4297 check_optflags -fno-math-errno
4298 check_optflags -fno-signed-zeros
4299
4300 if enabled icc; then
4301     # Just warnings, no remarks
4302     check_cflags -w1
4303     # -wd: Disable following warnings
4304     # 144, 167, 556: -Wno-pointer-sign
4305     # 1292: attribute "foo" ignored
4306     # 1419: external declaration in primary source file
4307     # 10006: ignoring unknown option -fno-signed-zeros
4308     # 10148: ignoring unknown option -Wno-parentheses
4309     # 10156: ignoring option '-W'; no argument required
4310     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4311     # 11030: Warning unknown option --as-needed
4312     # 10156: ignoring option '-export'; no argument required
4313     check_ldflags -wd10156,11030
4314     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4315     enable ebp_available
4316     if enabled x86_32; then
4317         icc_version=$($cc -dumpversion)
4318         test ${icc_version%%.*} -ge 11 &&
4319             check_cflags -falign-stack=maintain-16-byte ||
4320             disable aligned_stack
4321     fi
4322 elif enabled ccc; then
4323     # disable some annoying warnings
4324     add_cflags -msg_disable bitnotint
4325     add_cflags -msg_disable mixfuncvoid
4326     add_cflags -msg_disable nonstandcast
4327     add_cflags -msg_disable unsupieee
4328 elif enabled gcc; then
4329     check_optflags -fno-tree-vectorize
4330     check_cflags -Werror=implicit-function-declaration
4331     check_cflags -Werror=missing-prototypes
4332     check_cflags -Werror=return-type
4333     check_cflags -Werror=declaration-after-statement
4334     check_cflags -Werror=vla
4335     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4336 elif enabled llvm_gcc; then
4337     check_cflags -mllvm -stack-alignment=16
4338 elif enabled clang; then
4339     check_cflags -mllvm -stack-alignment=16
4340     check_cflags -Qunused-arguments
4341     check_cflags -Werror=implicit-function-declaration
4342     check_cflags -Werror=missing-prototypes
4343     check_cflags -Werror=return-type
4344 elif enabled cparser; then
4345     add_cflags -Wno-missing-variable-declarations
4346     add_cflags -Wno-empty-statement
4347 elif enabled armcc; then
4348     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4349     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4350     # 2523: use of inline assembly is deprecated
4351     add_cflags -W${armcc_opt},--diag_suppress=2523
4352     add_cflags -W${armcc_opt},--diag_suppress=1207
4353     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4354     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4355     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4356     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4357 elif enabled tms470; then
4358     add_cflags -pds=824 -pds=837
4359     disable inline_asm
4360 elif enabled pathscale; then
4361     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4362 elif enabled_any msvc icl; then
4363     enabled x86_32 && disable aligned_stack
4364     enabled_all x86_32 debug && add_cflags -Oy-
4365     enabled debug && add_ldflags -debug
4366     enable pragma_deprecated
4367     if enabled icl; then
4368         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4369         # (correctly) on icl 13.x.
4370         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4371             add_cflags -Qansi-alias
4372         # icl will pass the inline asm tests but inline asm is currently
4373         # not supported (build will fail)
4374         disable inline_asm
4375     fi
4376 fi
4377
4378 case $as_type in
4379     clang)
4380         add_asflags -Qunused-arguments
4381     ;;
4382 esac
4383
4384 case $ld_type in
4385     clang)
4386         check_ldflags -Qunused-arguments
4387     ;;
4388 esac
4389
4390 case $target_os in
4391     osf1)
4392         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4393     ;;
4394     plan9)
4395         add_cppflags -Dmain=plan9_main
4396     ;;
4397 esac
4398
4399 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4400
4401 check_deps $CONFIG_LIST       \
4402            $CONFIG_EXTRA      \
4403            $HAVE_LIST         \
4404            $ALL_COMPONENTS    \
4405
4406 enabled_all dxva2 CoTaskMemFree &&
4407     prepend avconv_libs $($ldflags_filter "-lole32") &&
4408     enable dxva2_lib
4409
4410 ! enabled_any memalign posix_memalign aligned_malloc &&
4411     enabled_any $need_memalign && enable memalign_hack
4412
4413 for thread in $THREADS_LIST; do
4414     if enabled $thread; then
4415         test -n "$thread_type" &&
4416             die "ERROR: Only one thread type must be selected." ||
4417             thread_type="$thread"
4418     fi
4419 done
4420
4421 # conditional library dependencies, in linking order
4422 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4423 enabled resample_filter && prepend avfilter_deps "avresample"
4424 enabled scale_filter    && prepend avfilter_deps "swscale"
4425
4426 enabled opus_decoder    && prepend avcodec_deps "avresample"
4427
4428 expand_deps(){
4429     lib_deps=${1}_deps
4430     eval "deps=\$$lib_deps"
4431     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4432     unique $lib_deps
4433 }
4434
4435 map 'expand_deps $v' $LIBRARY_LIST
4436
4437 echo "install prefix            $prefix"
4438 echo "source path               $source_path"
4439 echo "C compiler                $cc"
4440 echo "C library                 $libc_type"
4441 if test "$host_cc" != "$cc"; then
4442     echo "host C compiler           $host_cc"
4443     echo "host C library            $host_libc_type"
4444 fi
4445 echo "ARCH                      $arch ($cpu)"
4446 if test "$build_suffix" != ""; then
4447     echo "build suffix              $build_suffix"
4448 fi
4449 if test "$extra_version" != ""; then
4450     echo "version string suffix     $extra_version"
4451 fi
4452 echo "big-endian                ${bigendian-no}"
4453 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4454 if enabled x86; then
4455     echo "${yasmexe}                      ${yasm-no}"
4456     echo "MMX enabled               ${mmx-no}"
4457     echo "MMXEXT enabled            ${mmxext-no}"
4458     echo "3DNow! enabled            ${amd3dnow-no}"
4459     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4460     echo "SSE enabled               ${sse-no}"
4461     echo "SSSE3 enabled             ${ssse3-no}"
4462     echo "AVX enabled               ${avx-no}"
4463     echo "XOP enabled               ${xop-no}"
4464     echo "FMA3 enabled              ${fma3-no}"
4465     echo "FMA4 enabled              ${fma4-no}"
4466     echo "i686 features enabled     ${i686-no}"
4467     echo "CMOV is fast              ${fast_cmov-no}"
4468     echo "EBX available             ${ebx_available-no}"
4469     echo "EBP available             ${ebp_available-no}"
4470 fi
4471 if enabled aarch64; then
4472     echo "NEON enabled              ${neon-no}"
4473     echo "VFP enabled               ${vfp-no}"
4474 fi
4475 if enabled arm; then
4476     echo "ARMv5TE enabled           ${armv5te-no}"
4477     echo "ARMv6 enabled             ${armv6-no}"
4478     echo "ARMv6T2 enabled           ${armv6t2-no}"
4479     echo "VFP enabled               ${vfp-no}"
4480     echo "NEON enabled              ${neon-no}"
4481 fi
4482 if enabled ppc; then
4483     echo "AltiVec enabled           ${altivec-no}"
4484     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4485     echo "dcbzl available           ${dcbzl-no}"
4486 fi
4487 echo "debug symbols             ${debug-no}"
4488 echo "optimize for size         ${small-no}"
4489 echo "optimizations             ${optimizations-no}"
4490 echo "static                    ${static-no}"
4491 echo "shared                    ${shared-no}"
4492 echo "new filter support        ${avfilter-no}"
4493 echo "network support           ${network-no}"
4494 echo "threading support         ${thread_type-no}"
4495 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4496 echo "SDL support               ${sdl-no}"
4497 test -n "$random_seed" &&
4498     echo "random seed               ${random_seed}"
4499 echo
4500
4501 echo "External libraries:"
4502 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4503 echo
4504
4505 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4506     echo "Enabled ${type}s:"
4507     eval list=\$$(toupper $type)_LIST
4508     print_enabled '_*' $list | print_3_columns
4509     echo
4510 done
4511
4512 license="LGPL version 2.1 or later"
4513 if enabled nonfree; then
4514     license="nonfree and unredistributable"
4515 elif enabled gplv3; then
4516     license="GPL version 3 or later"
4517 elif enabled lgplv3; then
4518     license="LGPL version 3 or later"
4519 elif enabled gpl; then
4520     license="GPL version 2 or later"
4521 fi
4522
4523 echo "License: $license"
4524
4525 echo "Creating config.mak and config.h..."
4526
4527 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4528
4529 config_files="$TMPH config.mak"
4530
4531 cat > config.mak <<EOF
4532 # Automatically generated by configure - do not modify!
4533 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4534 prefix=$prefix
4535 LIBDIR=\$(DESTDIR)$libdir
4536 SHLIBDIR=\$(DESTDIR)$shlibdir
4537 INCDIR=\$(DESTDIR)$incdir
4538 BINDIR=\$(DESTDIR)$bindir
4539 DATADIR=\$(DESTDIR)$datadir
4540 DOCDIR=\$(DESTDIR)$docdir
4541 MANDIR=\$(DESTDIR)$mandir
4542 SRC_PATH=$source_path
4543 CC_IDENT=$cc_ident
4544 ARCH=$arch
4545 CC=$cc
4546 AS=$as
4547 LD=$ld
4548 DEPCC=$dep_cc
4549 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4550 DEPAS=$as
4551 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4552 YASM=$yasmexe
4553 DEPYASM=$yasmexe
4554 AR=$ar
4555 ARFLAGS=$arflags
4556 AR_O=$ar_o
4557 RANLIB=$ranlib
4558 STRIP=$strip
4559 LN_S=$ln_s
4560 CPPFLAGS=$CPPFLAGS
4561 CFLAGS=$CFLAGS
4562 ASFLAGS=$ASFLAGS
4563 AS_C=$AS_C
4564 AS_O=$AS_O
4565 CC_C=$CC_C
4566 CC_E=$CC_E
4567 CC_O=$CC_O
4568 LD_O=$LD_O
4569 LD_LIB=$LD_LIB
4570 LD_PATH=$LD_PATH
4571 DLLTOOL=$dlltool
4572 LDFLAGS=$LDFLAGS
4573 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4574 STRIPFLAGS=$STRIPFLAGS
4575 YASMFLAGS=$YASMFLAGS
4576 BUILDSUF=$build_suffix
4577 FULLNAME=$FULLNAME
4578 LIBPREF=$LIBPREF
4579 LIBSUF=$LIBSUF
4580 LIBNAME=$LIBNAME
4581 SLIBPREF=$SLIBPREF
4582 SLIBSUF=$SLIBSUF
4583 EXESUF=$EXESUF
4584 EXTRA_VERSION=$extra_version
4585 CCDEP=$CCDEP
4586 CCDEP_FLAGS=$CCDEP_FLAGS
4587 ASDEP=$ASDEP
4588 ASDEP_FLAGS=$ASDEP_FLAGS
4589 CC_DEPFLAGS=$CC_DEPFLAGS
4590 AS_DEPFLAGS=$AS_DEPFLAGS
4591 HOSTCC=$host_cc
4592 HOSTLD=$host_ld
4593 HOSTCFLAGS=$host_cflags
4594 HOSTCPPFLAGS=$host_cppflags
4595 HOSTEXESUF=$HOSTEXESUF
4596 HOSTLDFLAGS=$host_ldflags
4597 HOSTLIBS=$host_libs
4598 DEPHOSTCC=$host_cc
4599 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4600 HOSTCCDEP=$HOSTCCDEP
4601 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4602 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4603 HOSTCC_C=$HOSTCC_C
4604 HOSTCC_O=$HOSTCC_O
4605 HOSTLD_O=$HOSTLD_O
4606 TARGET_EXEC=$target_exec $target_exec_args
4607 TARGET_PATH=$target_path
4608 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4609 CFLAGS-avplay=$sdl_cflags
4610 ZLIB=$($ldflags_filter -lz)
4611 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4612 EXTRALIBS=$extralibs
4613 COMPAT_OBJS=$compat_objs
4614 EXEOBJS=$exeobjs
4615 INSTALL=install
4616 LIBTARGET=${LIBTARGET}
4617 SLIBNAME=${SLIBNAME}
4618 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4619 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4620 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4621 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4622 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4623 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4624 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4625 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4626 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4627 EOF
4628
4629 get_version(){
4630     lcname=lib${1}
4631     name=$(toupper $lcname)
4632     file=$source_path/$lcname/version.h
4633     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4634     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4635     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4636     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4637     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4638 }
4639
4640 map 'get_version $v' $LIBRARY_LIST
4641
4642 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4643
4644 print_program_libs(){
4645     eval "program_libs=\$${1}_libs"
4646     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4647 }
4648
4649 map 'print_program_libs $v' $PROGRAM_LIST
4650
4651 cat > $TMPH <<EOF
4652 /* Automatically generated by configure - do not modify! */
4653 #ifndef LIBAV_CONFIG_H
4654 #define LIBAV_CONFIG_H
4655 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4656 #define LIBAV_LICENSE "$(c_escape $license)"
4657 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4658 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4659 #define restrict $_restrict
4660 #define EXTERN_PREFIX "${extern_prefix}"
4661 #define EXTERN_ASM ${extern_prefix}
4662 #define SLIBSUF "$SLIBSUF"
4663 EOF
4664
4665 test -n "$malloc_prefix" &&
4666     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4667
4668 if enabled yasm; then
4669     append config_files $TMPASM
4670     printf '' >$TMPASM
4671 fi
4672
4673 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4674
4675 print_config ARCH_   "$config_files" $ARCH_LIST
4676 print_config HAVE_   "$config_files" $HAVE_LIST
4677 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4678                                      $CONFIG_EXTRA      \
4679                                      $ALL_COMPONENTS    \
4680
4681 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4682
4683 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4684 cp_if_changed $TMPH config.h
4685 touch .config
4686
4687 enabled yasm && cp_if_changed $TMPASM config.asm
4688
4689 cat > $TMPH <<EOF
4690 /* Generated by ffconf */
4691 #ifndef AVUTIL_AVCONFIG_H
4692 #define AVUTIL_AVCONFIG_H
4693 EOF
4694
4695 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4696
4697 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4698
4699 cp_if_changed $TMPH libavutil/avconfig.h
4700
4701 test -n "$WARNINGS" && printf "\n$WARNINGS"
4702
4703 # build pkg-config files
4704
4705 lib_version(){
4706     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4707 }
4708
4709 pkgconfig_generate(){
4710     name=$1
4711     shortname=${name#lib}${build_suffix}
4712     comment=$2
4713     version=$3
4714     libs=$4
4715     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4716     requires=${requires%, }
4717     enabled ${name#lib} || return 0
4718     mkdir -p $name
4719     cat <<EOF > $name/$name.pc
4720 prefix=$prefix
4721 exec_prefix=\${prefix}
4722 libdir=$libdir
4723 includedir=$incdir
4724
4725 Name: $name
4726 Description: $comment
4727 Version: $version
4728 Requires: $(enabled shared || echo $requires)
4729 Requires.private: $(enabled shared && echo $requires)
4730 Conflicts:
4731 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4732 Libs.private: $(enabled shared && echo $libs)
4733 Cflags: -I\${includedir}
4734 EOF
4735     cat <<EOF > $name/$name-uninstalled.pc
4736 prefix=
4737 exec_prefix=
4738 libdir=\${pcfiledir}
4739 includedir=${source_path}
4740
4741 Name: $name
4742 Description: $comment
4743 Version: $version
4744 Requires: $requires
4745 Conflicts:
4746 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4747 Cflags: -I\${includedir}
4748 EOF
4749 }
4750
4751 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4752 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4753 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4754 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4755 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4756 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
4757 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"