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   --enable-rpath           use rpath when linking programs [USE WITH CARE]
  90
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106
 107 Program options:
 108   --disable-programs       do not build command line programs
 109   --disable-avconv         disable avconv build
 110   --disable-avplay         disable avplay build
 111   --disable-avprobe        disable avprobe build
 112   --disable-avserver       deprecated, does nothing
 113
 114 Component options:
 115   --disable-doc            do not build documentation
 116   --disable-avdevice       disable libavdevice build
 117   --disable-avcodec        disable libavcodec build
 118   --disable-avformat       disable libavformat build
 119   --disable-avutil         disable libavutil build
 120   --disable-swscale        disable libswscale build
 121   --disable-avfilter       disable video filter support [no]
 122   --disable-avresample     disable libavresample build [no]
 123   --disable-pthreads       disable pthreads [auto]
 124   --disable-w32threads     disable Win32 threads [auto]
 125   --disable-network        disable network support [no]
 126   --disable-dct            disable DCT code
 127   --disable-error-resilience disable error resilience code
 128   --disable-lsp            disable LSP code
 129   --disable-lzo            disable LZO decoder code
 130   --disable-mdct           disable MDCT code
 131   --disable-rdft           disable RDFT code
 132   --disable-fft            disable FFT code
 133   --disable-faan           disable floating point AAN (I)DCT code
 134
 135 Hardware accelerators:
 136   --enable-d3d11va         enable D3D11VA code
 137   --enable-dxva2           enable DXVA2 code
 138   --enable-vaapi           enable VAAPI code
 139   --enable-vda             enable VDA code
 140   --enable-vdpau           enable VDPAU code
 141
 142 Individual component options:
 143   --disable-everything     disable all components listed below
 144   --disable-encoder=NAME   disable encoder NAME
 145   --enable-encoder=NAME    enable encoder NAME
 146   --disable-encoders       disable all encoders
 147   --disable-decoder=NAME   disable decoder NAME
 148   --enable-decoder=NAME    enable decoder NAME
 149   --disable-decoders       disable all decoders
 150   --disable-hwaccel=NAME   disable hwaccel NAME
 151   --enable-hwaccel=NAME    enable hwaccel NAME
 152   --disable-hwaccels       disable all hwaccels
 153   --disable-muxer=NAME     disable muxer NAME
 154   --enable-muxer=NAME      enable muxer NAME
 155   --disable-muxers         disable all muxers
 156   --disable-demuxer=NAME   disable demuxer NAME
 157   --enable-demuxer=NAME    enable demuxer NAME
 158   --disable-demuxers       disable all demuxers
 159   --enable-parser=NAME     enable parser NAME
 160   --disable-parser=NAME    disable parser NAME
 161   --disable-parsers        disable all parsers
 162   --enable-bsf=NAME        enable bitstream filter NAME
 163   --disable-bsf=NAME       disable bitstream filter NAME
 164   --disable-bsfs           disable all bitstream filters
 165   --enable-protocol=NAME   enable protocol NAME
 166   --disable-protocol=NAME  disable protocol NAME
 167   --disable-protocols      disable all protocols
 168   --enable-indev=NAME      enable input device NAME
 169   --disable-indev=NAME     disable input device NAME
 170   --disable-indevs         disable input devices
 171   --enable-outdev=NAME     enable output device NAME
 172   --disable-outdev=NAME    disable output device NAME
 173   --disable-outdevs        disable output devices
 174   --disable-devices        disable all devices
 175   --enable-filter=NAME     enable filter NAME
 176   --disable-filter=NAME    disable filter NAME
 177   --disable-filters        disable all filters
 178
 179 External library support:
 180   --enable-avisynth        enable reading of AviSynth script files [no]
 181   --enable-bzlib           enable bzlib [autodetect]
 182   --enable-cuda            enable dynamically linked CUDA [no]
 183   --enable-frei0r          enable frei0r video filtering
 184   --enable-gnutls          enable gnutls [no]
 185   --enable-libbs2b         enable bs2b DSP library [no]
 186   --enable-libcdio         enable audio CD grabbing with libcdio
 187   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 188                            and libraw1394 [no]
 189   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 190   --enable-libfaac         enable AAC encoding via libfaac [no]
 191   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 192   --enable-libfreetype     enable libfreetype [no]
 193   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 194   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 195   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 196   --enable-libmfx          enable HW acceleration through libmfx
 197   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 198   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 199   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 200   --enable-libopencv       enable video filtering via libopencv [no]
 201   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 202   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 203   --enable-libopus         enable Opus de/encoding via libopus [no]
 204   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 205   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 206   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 207   --enable-libsnappy       enable Snappy compression [no]
 208   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 209   --enable-libtheora       enable Theora encoding via libtheora [no]
 210   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 211   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 212   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 213   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 214   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 215   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 216   --enable-libwebp         enable WebP encoding via libwebp [no]
 217   --enable-libx264         enable H.264 encoding via x264 [no]
 218   --enable-libx265         enable HEVC encoding via x265 [no]
 219   --enable-libxavs         enable AVS encoding via xavs [no]
 220   --enable-libxcb          enable X11 grabbing using XCB [no]
 221   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
 222   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
 223   --enable-libxvid         enable Xvid encoding via xvidcore,
 224                            native MPEG-4/Xvid encoder exists [no]
 225   --enable-mmal            enable decoding via MMAL [no]
 226   --enable-nvenc           enable encoding via NVENC [no]
 227   --enable-openssl         enable openssl [no]
 228   --enable-x11grab         enable X11 grabbing (legacy) [no]
 229   --enable-zlib            enable zlib [autodetect]
 230
 231 Toolchain options:
 232   --arch=ARCH              select architecture [$arch]
 233   --cpu=CPU                select the minimum required CPU (affects
 234                            instruction selection, may crash on older CPUs)
 235   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 236   --enable-cross-compile   assume a cross-compiler is used
 237   --sysroot=PATH           root of cross-build tree
 238   --sysinclude=PATH        location of cross-build system headers
 239   --target-os=OS           compiler targets OS [$target_os]
 240   --target-exec=CMD        command to run executables on target
 241   --target-path=DIR        path to view of build directory on target
 242   --target-samples=DIR     path to samples directory on target
 243   --toolchain=NAME         set tool defaults according to NAME
 244   --nm=NM                  use nm tool
 245   --ar=AR                  use archive tool AR [$ar_default]
 246   --as=AS                  use assembler AS [$as_default]
 247   --cc=CC                  use C compiler CC [$cc_default]
 248   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 249   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 250   --ld=LD                  use linker LD
 251   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 252   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 253   --host-cc=HOSTCC         use host C compiler HOSTCC
 254   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 255   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 256   --host-ld=HOSTLD         use host linker HOSTLD
 257   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 258   --host-libs=HLIBS        use libs HLIBS when linking for host
 259   --host-os=OS             compiler host OS [$target_os]
 260   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 261   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 262   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 263   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 264   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 265   --extra-version=STRING   version string suffix []
 266   --optflags=OPTFLAGS      override optimization-related compiler flags
 267   --build-suffix=SUFFIX    library name suffix []
 268   --enable-pic             build position-independent code
 269   --enable-thumb           compile for Thumb instruction set
 270   --enable-lto             use link-time optimization
 271   --env="ENV=override"     override the environment variables
 272
 273 Advanced options (experts only):
 274   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 275   --custom-allocator=NAME  use a supported custom allocator
 276   --disable-symver         disable symbol versioning
 277   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 278   --disable-safe-bitstream-reader
 279                            disable buffer boundary checking in bitreaders
 280                            (faster, but may crash)
 281   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 282   --enable-sram            allow use of on-chip SRAM
 283
 284 Optimization options (experts only):
 285   --disable-asm            disable all assembly optimizations
 286   --disable-altivec        disable AltiVec optimizations
 287   --disable-vsx            disable VSX optimizations
 288   --disable-power8         disable POWER8 optimizations
 289   --disable-amd3dnow       disable 3DNow! optimizations
 290   --disable-amd3dnowext    disable 3DNow! extended optimizations
 291   --disable-mmx            disable MMX optimizations
 292   --disable-mmxext         disable MMXEXT optimizations
 293   --disable-sse            disable SSE optimizations
 294   --disable-sse2           disable SSE2 optimizations
 295   --disable-sse3           disable SSE3 optimizations
 296   --disable-ssse3          disable SSSE3 optimizations
 297   --disable-sse4           disable SSE4 optimizations
 298   --disable-sse42          disable SSE4.2 optimizations
 299   --disable-avx            disable AVX optimizations
 300   --disable-xop            disable XOP optimizations
 301   --disable-fma3           disable FMA3 optimizations
 302   --disable-fma4           disable FMA4 optimizations
 303   --disable-avx2           disable AVX2 optimizations
 304   --disable-armv5te        disable armv5te optimizations
 305   --disable-armv6          disable armv6 optimizations
 306   --disable-armv6t2        disable armv6t2 optimizations
 307   --disable-vfp            disable VFP optimizations
 308   --disable-neon           disable NEON optimizations
 309   --disable-inline-asm     disable use of inline assembly
 310   --disable-yasm           disable use of nasm/yasm assembly
 311
 312 Developer options (useful when working on Libav itself):
 313   --disable-debug          disable debugging symbols
 314   --enable-debug=LEVEL     set the debug level [$debuglevel]
 315   --disable-optimizations  disable compiler optimizations
 316   --enable-extra-warnings  enable more compiler warnings
 317   --samples=PATH           location of test samples for FATE, if not set use
 318                            \$LIBAV_SAMPLES at make invocation time.
 319   --enable-neon-clobber-test check NEON registers for clobbering (should be
 320                            used only for debugging purposes)
 321   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 322                            should be used only for debugging purposes)
 323   --enable-random          randomly enable/disable components
 324   --disable-random
 325   --enable-random=LIST     randomly enable/disable specific components or
 326   --disable-random=LIST    component groups. LIST is a comma-separated list
 327                            of NAME[:PROB] entries where NAME is a component
 328                            (group) and PROB the probability associated with
 329                            NAME (default 0.5).
 330   --random-seed=VALUE      seed value for --enable/disable-random
 331   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 332                            (only applies to --disable-optimizations builds)
 333
 334 NOTE: Object files are built at the place where configure is launched.
 335 EOF
 336   exit 0
 337 }
 338
 339 quotes='""'
 340
 341 log(){
 342     echo "$@" >> $logfile
 343 }
 344
 345 log_file(){
 346     log BEGIN $1
 347     i=1
 348     while read line; do
 349         printf '%5s   %s\n' "${i}" "${line}"
 350         i=$(($i+1))
 351     done < $1 >> $logfile
 352     log END $1
 353 }
 354
 355 echolog(){
 356     log "$@"
 357     echo "$@"
 358 }
 359
 360 warn(){
 361     log "WARNING: $*"
 362     WARNINGS="${WARNINGS}WARNING: $*\n"
 363 }
 364
 365 die(){
 366     echolog "$@"
 367     cat <<EOF
 368
 369 If you think configure made a mistake, make sure you are using the latest
 370 version from Git.  If the latest version fails, report the problem to the
 371 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 372 EOF
 373     if disabled logging; then
 374         cat <<EOF
 375 Rerun configure with logging enabled (do not use --disable-logging), and
 376 include the log this produces with your report.
 377 EOF
 378     else
 379         cat <<EOF
 380 Include the log file "$logfile" produced by configure as this will help
 381 solving the problem.
 382 EOF
 383     fi
 384     exit 1
 385 }
 386
 387 # Avoid locale weirdness, besides we really just want to translate ASCII.
 388 toupper(){
 389     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 390 }
 391
 392 tolower(){
 393     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 394 }
 395
 396 c_escape(){
 397     echo "$*" | sed 's/["\\]/\\\0/g'
 398 }
 399
 400 sh_quote(){
 401     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 402     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 403     echo "$v"
 404 }
 405
 406 cleanws(){
 407     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 408 }
 409
 410 filter(){
 411     pat=$1
 412     shift
 413     for v; do
 414         eval "case $v in $pat) echo $v ;; esac"
 415     done
 416 }
 417
 418 filter_out(){
 419     pat=$1
 420     shift
 421     for v; do
 422         eval "case $v in $pat) ;; *) echo $v ;; esac"
 423     done
 424 }
 425
 426 map(){
 427     m=$1
 428     shift
 429     for v; do eval $m; done
 430 }
 431
 432 add_suffix(){
 433     suffix=$1
 434     shift
 435     for v; do echo ${v}${suffix}; done
 436 }
 437
 438 set_all(){
 439     value=$1
 440     shift
 441     for var in $*; do
 442         eval $var=$value
 443     done
 444 }
 445
 446 set_weak(){
 447     value=$1
 448     shift
 449     for var; do
 450         eval : \${$var:=$value}
 451     done
 452 }
 453
 454 sanitize_var_name(){
 455     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 456 }
 457
 458 set_safe(){
 459     var=$1
 460     shift
 461     eval $(sanitize_var_name "$var")='$*'
 462 }
 463
 464 get_safe(){
 465     eval echo \$$(sanitize_var_name "$1")
 466 }
 467
 468 pushvar(){
 469     for pvar in $*; do
 470         eval level=\${${pvar}_level:=0}
 471         eval ${pvar}_${level}="\$$pvar"
 472         eval ${pvar}_level=$(($level+1))
 473     done
 474 }
 475
 476 popvar(){
 477     for pvar in $*; do
 478         eval level=\${${pvar}_level:-0}
 479         test $level = 0 && continue
 480         eval level=$(($level-1))
 481         eval $pvar="\${${pvar}_${level}}"
 482         eval ${pvar}_level=$level
 483         eval unset ${pvar}_${level}
 484     done
 485 }
 486
 487 enable(){
 488     set_all yes $*
 489 }
 490
 491 check_requested() {
 492     for var; do
 493         eval test "x\$${var#!}_requested" = "xyes" &&  die "${var%%_*} cannot be enabled"
 494     done
 495 }
 496
 497 disable(){
 498     set_all no $*
 499     check_requested $*
 500 }
 501
 502 enable_weak(){
 503     set_weak yes $*
 504 }
 505
 506 disable_weak(){
 507     set_weak no $*
 508 }
 509
 510 enable_safe(){
 511     for var; do
 512         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 513     done
 514 }
 515
 516 disable_safe(){
 517     for var; do
 518         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 519     done
 520 }
 521
 522 do_enable_deep(){
 523     for var; do
 524         enabled $var && continue
 525         eval sel="\$${var}_select"
 526         eval sgs="\$${var}_suggest"
 527         pushvar var sgs
 528         enable_deep $sel
 529         popvar sgs
 530         enable_deep_weak $sgs
 531         popvar var
 532     done
 533 }
 534
 535 enable_deep(){
 536     do_enable_deep $*
 537     enable $*
 538 }
 539
 540 enable_deep_weak(){
 541     for var; do
 542         disabled $var && continue
 543         pushvar var
 544         do_enable_deep $var
 545         popvar var
 546         enable_weak $var
 547     done
 548 }
 549
 550 do_enable_deep_force(){
 551     for var; do
 552         enabled $var && continue
 553         eval sel="\$${var}_deps\ \$${var}_deps_any\ \$${var}_select\ \$${var}_suggest\ \$${var}_select_any"
 554         pushvar var
 555         enable_deep_force $sel
 556         popvar var
 557     done
 558 }
 559
 560 enable_deep_force(){
 561     do_enable_deep_force $*
 562     for var; do
 563         is_in $var $ALL_COMPONENTS $COMPONENT_LIST $LIBRARY_LIST && enable $var
 564     done
 565 }
 566
 567 request(){
 568     disable $* # force the refresh of the dependencies
 569     for var; do
 570         enable ${var}_requested
 571     done
 572     enable_deep_force $*
 573     enable $*
 574 }
 575
 576 enabled(){
 577     test "${1#!}" = "$1" && op== || op=!=
 578     eval test "x\$${1#!}" $op "xyes"
 579 }
 580
 581 disabled(){
 582     test "${1#!}" = "$1" && op== || op=!=
 583     eval test "x\$${1#!}" $op "xno"
 584 }
 585
 586 enabled_all(){
 587     for opt; do
 588         enabled $opt || return 1
 589     done
 590 }
 591
 592 disabled_all(){
 593     for opt; do
 594         disabled $opt || return 1
 595     done
 596 }
 597
 598 enabled_any(){
 599     for opt; do
 600         enabled $opt && return 0
 601     done
 602 }
 603
 604 disabled_any(){
 605     for opt; do
 606         disabled $opt && return 0
 607     done
 608     return 1
 609 }
 610
 611 set_default(){
 612     for opt; do
 613         eval : \${$opt:=\$${opt}_default}
 614     done
 615 }
 616
 617 is_in(){
 618     value=$1
 619     shift
 620     for var in $*; do
 621         [ $var = $value ] && return 0
 622     done
 623     return 1
 624 }
 625
 626 do_check_deps(){
 627     for cfg; do
 628         cfg="${cfg#!}"
 629         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 630         disabled ${cfg}_checking && continue
 631         enable ${cfg}_checking
 632         append allopts $cfg
 633
 634         eval dep_all="\$${cfg}_deps"
 635         eval dep_any="\$${cfg}_deps_any\ \$${cfg}_select_any"
 636         eval dep_sel="\$${cfg}_select"
 637         eval dep_sgs="\$${cfg}_suggest"
 638         eval dep_ifa="\$${cfg}_if"
 639         eval dep_ifn="\$${cfg}_if_any"
 640
 641         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 642         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 643         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 644
 645         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 646         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 647         enabled_all  $dep_all || disable $cfg
 648         enabled_any  $dep_any || disable $cfg
 649         disabled_any $dep_sel && disable $cfg
 650
 651         if enabled $cfg; then
 652             enable_deep $dep_sel
 653             enable_deep_weak $dep_sgs
 654         fi
 655
 656         disable ${cfg}_checking
 657     done
 658 }
 659
 660 check_deps(){
 661     unset allopts
 662
 663     do_check_deps "$@"
 664
 665     for cfg in $allopts; do
 666         enabled $cfg || continue
 667         eval dep_extralibs="\$${cfg}_extralibs"
 668         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 669     done
 670 }
 671
 672 print_config(){
 673     pfx=$1
 674     files=$2
 675     shift 2
 676     map 'eval echo "$v \${$v:-no}"' "$@" |
 677     awk "BEGIN { split(\"$files\", files) }
 678         {
 679             c = \"$pfx\" toupper(\$1);
 680             v = \$2;
 681             sub(/yes/, 1, v);
 682             sub(/no/,  0, v);
 683             for (f in files) {
 684                 file = files[f];
 685                 if (file ~ /\\.h\$/) {
 686                     printf(\"#define %s %d\\n\", c, v) >>file;
 687                 } else if (file ~ /\\.asm\$/) {
 688                     printf(\"%%define %s %d\\n\", c, v) >>file;
 689                 } else if (file ~ /\\.mak\$/) {
 690                     n = -v ? \"\" : \"!\";
 691                     printf(\"%s%s=yes\\n\", n, c) >>file;
 692                 }
 693             }
 694         }"
 695 }
 696
 697 print_enabled(){
 698     suf=$1
 699     shift
 700     for v; do
 701         enabled $v && printf "%s\n" ${v%$suf};
 702     done
 703 }
 704
 705 append(){
 706     var=$1
 707     shift
 708     eval "$var=\"\$$var $*\""
 709 }
 710
 711 prepend(){
 712     var=$1
 713     shift
 714     eval "$var=\"$* \$$var\""
 715 }
 716
 717 unique(){
 718     var=$1
 719     uniq_list=""
 720     for tok in $(eval echo \$$var); do
 721         uniq_list="$(filter_out $tok $uniq_list) $tok"
 722     done
 723     eval "$var=\"${uniq_list}\""
 724 }
 725
 726 add_cppflags(){
 727     append CPPFLAGS "$@"
 728 }
 729
 730 add_cflags(){
 731     append CFLAGS $($cflags_filter "$@")
 732 }
 733
 734 add_asflags(){
 735     append ASFLAGS $($asflags_filter "$@")
 736 }
 737
 738 add_objcflags(){
 739     append OBJCFLAGS $($objcflags_filter "$@")
 740 }
 741
 742 add_ldflags(){
 743     append LDFLAGS $($ldflags_filter "$@")
 744 }
 745
 746 add_ldexeflags(){
 747     append LDEXEFLAGS $($ldflags_filter "$@")
 748 }
 749
 750 add_stripflags(){
 751     append STRIPFLAGS "$@"
 752 }
 753
 754 add_extralibs(){
 755     prepend extralibs $($ldflags_filter "$@")
 756 }
 757
 758 add_host_cppflags(){
 759     append host_cppflags "$@"
 760 }
 761
 762 add_host_cflags(){
 763     append host_cflags $($host_cflags_filter "$@")
 764 }
 765
 766 add_host_ldflags(){
 767     append host_ldflags $($host_ldflags_filter "$@")
 768 }
 769
 770 add_compat(){
 771     append compat_objs $1
 772     shift
 773     map 'add_cppflags -D$v' "$@"
 774 }
 775
 776 check_cmd(){
 777     log "$@"
 778     "$@" >> $logfile 2>&1
 779 }
 780
 781 cc_o(){
 782     eval printf '%s\\n' $CC_O
 783 }
 784
 785 cc_e(){
 786     eval printf '%s\\n' $CC_E
 787 }
 788
 789 check_cc(){
 790     log check_cc "$@"
 791     cat > $TMPC
 792     log_file $TMPC
 793     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 794 }
 795
 796 check_objcc(){
 797     log check_objcc "$@"
 798     cat > $TMPC
 799     log_file $TMPC
 800     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 801 }
 802
 803 check_cpp(){
 804     log check_cpp "$@"
 805     cat > $TMPC
 806     log_file $TMPC
 807     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 808 }
 809
 810 as_o(){
 811     eval printf '%s\\n' $AS_O
 812 }
 813
 814 check_as(){
 815     log check_as "$@"
 816     cat > $TMPS
 817     log_file $TMPS
 818     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 819 }
 820
 821 check_inline_asm(){
 822     log check_inline_asm "$@"
 823     name="$1"
 824     code="$2"
 825     shift 2
 826     disable $name
 827     check_cc "$@" <<EOF && enable $name
 828 void foo(void){ __asm__ volatile($code); }
 829 EOF
 830 }
 831
 832 check_insn(){
 833     log check_insn "$@"
 834     check_inline_asm ${1}_inline "\"$2\""
 835     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 836 }
 837
 838 check_yasm(){
 839     log check_yasm "$@"
 840     echo "$1" > $TMPS
 841     log_file $TMPS
 842     shift 1
 843     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 844 }
 845
 846 ld_o(){
 847     eval printf '%s\\n' $LD_O
 848 }
 849
 850 check_ld(){
 851     log check_ld "$@"
 852     flags=$(filter_out '-l*' "$@")
 853     libs=$(filter '-l*' "$@")
 854     check_cc $($cflags_filter $flags) || return
 855     flags=$($ldflags_filter $flags)
 856     libs=$($ldflags_filter $libs)
 857     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 858 }
 859
 860 print_include(){
 861     hdr=$1
 862     test "${hdr%.h}" = "${hdr}" &&
 863         echo "#include $hdr"    ||
 864         echo "#include <$hdr>"
 865 }
 866
 867 check_code(){
 868     log check_code "$@"
 869     check=$1
 870     headers=$2
 871     code=$3
 872     shift 3
 873     {
 874         for hdr in $headers; do
 875             print_include $hdr
 876         done
 877         echo "int main(void) { $code; return 0; }"
 878     } | check_$check "$@"
 879 }
 880
 881 check_cppflags(){
 882     log check_cppflags "$@"
 883     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 884 int x;
 885 EOF
 886 }
 887
 888 test_cflags(){
 889     log test_cflags "$@"
 890     set -- $($cflags_filter "$@")
 891     check_cc "$@" <<EOF
 892 int x;
 893 EOF
 894 }
 895
 896 check_cflags(){
 897     log check_cflags "$@"
 898     test_cflags "$@" && add_cflags "$@"
 899 }
 900
 901 test_objcflags(){
 902     log test_cflags "$@"
 903     set -- $($cflags_filter "$@")
 904     check_objcc "$@" <<EOF
 905 int x;
 906 EOF
 907 }
 908
 909 check_objcflags(){
 910     log check_cflags "$@"
 911     test_objcflags "$@" && add_objcflags "$@"
 912 }
 913
 914 test_ldflags(){
 915     log test_ldflags "$@"
 916     check_ld "$@" <<EOF
 917 int main(void){ return 0; }
 918 EOF
 919 }
 920
 921 check_ldflags(){
 922     log check_ldflags "$@"
 923     test_ldflags "$@" && add_ldflags "$@"
 924 }
 925
 926 test_stripflags(){
 927     log test_stripflags "$@"
 928     # call check_cc to get a fresh TMPO
 929     check_cc <<EOF
 930 int main(void) { return 0; }
 931 EOF
 932     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 933 }
 934
 935 check_stripflags(){
 936     log check_stripflags "$@"
 937     test_stripflags "$@" && add_stripflags "$@"
 938 }
 939
 940 check_header(){
 941     log check_header "$@"
 942     header=$1
 943     shift
 944     disable_safe $header
 945     check_cpp "$@" <<EOF && enable_safe $header
 946 #include <$header>
 947 int x;
 948 EOF
 949 }
 950
 951 check_func(){
 952     log check_func "$@"
 953     func=$1
 954     shift
 955     disable $func
 956     check_ld "$@" <<EOF && enable $func
 957 extern int $func();
 958 int main(void){ $func(); }
 959 EOF
 960 }
 961
 962 check_mathfunc(){
 963     log check_mathfunc "$@"
 964     func=$1
 965     narg=$2
 966     shift 2
 967     test $narg = 2 && args="f, g" || args="f"
 968     disable $func
 969     check_ld "$@" <<EOF && enable $func
 970 #include <math.h>
 971 float foo(float f, float g) { return $func($args); }
 972 int main(void){ return 0; }
 973 EOF
 974 }
 975
 976 check_func_headers(){
 977     log check_func_headers "$@"
 978     headers=$1
 979     funcs=$2
 980     shift 2
 981     {
 982         for hdr in $headers; do
 983             print_include $hdr
 984         done
 985         for func in $funcs; do
 986             echo "long check_$func(void) { return (long) $func; }"
 987         done
 988         echo "int main(void) { return 0; }"
 989     } | check_ld "$@" && enable $funcs && enable_safe $headers
 990 }
 991
 992 check_cpp_condition(){
 993     log check_cpp_condition "$@"
 994     header=$1
 995     condition=$2
 996     shift 2
 997     check_cpp "$@" <<EOF
 998 #include <$header>
 999 #if !($condition)
1000 #error "unsatisfied condition: $condition"
1001 #endif
1002 EOF
1003 }
1004
1005 check_lib(){
1006     log check_lib "$@"
1007     header="$1"
1008     func="$2"
1009     shift 2
1010     check_header $header && check_func $func "$@" && add_extralibs "$@"
1011 }
1012
1013 check_lib2(){
1014     log check_lib2 "$@"
1015     headers="$1"
1016     funcs="$2"
1017     shift 2
1018     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1019 }
1020
1021 check_pkg_config(){
1022     log check_pkg_config "$@"
1023     pkg="$1"
1024     headers="$2"
1025     funcs="$3"
1026     shift 3
1027     check_cmd $pkg_config --exists --print-errors $pkg || return
1028     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1029     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1030     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1031         set_safe "${pkg}_cflags" $pkg_cflags   &&
1032         set_safe "${pkg}_libs"   $pkg_libs
1033 }
1034
1035 check_exec(){
1036     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1037 }
1038
1039 check_exec_crash(){
1040     code=$(cat)
1041
1042     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1043     # are safe but may not be available everywhere.  Thus we use
1044     # raise(SIGTERM) instead.  The check is run in a subshell so we
1045     # can redirect the "Terminated" message from the shell.  SIGBUS
1046     # is not defined by standard C so it is used conditionally.
1047
1048     (check_exec "$@") >> $logfile 2>&1 <<EOF
1049 #include <signal.h>
1050 static void sighandler(int sig){
1051     raise(SIGTERM);
1052 }
1053 int foo(void){
1054     $code
1055 }
1056 int (*func_ptr)(void) = foo;
1057 int main(void){
1058     signal(SIGILL, sighandler);
1059     signal(SIGFPE, sighandler);
1060     signal(SIGSEGV, sighandler);
1061 #ifdef SIGBUS
1062     signal(SIGBUS, sighandler);
1063 #endif
1064     return func_ptr();
1065 }
1066 EOF
1067 }
1068
1069 check_type(){
1070     log check_type "$@"
1071     headers=$1
1072     type=$2
1073     shift 2
1074     disable_safe "$type"
1075     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1076 }
1077
1078 check_struct(){
1079     log check_struct "$@"
1080     headers=$1
1081     struct=$2
1082     member=$3
1083     shift 3
1084     disable_safe "${struct}_${member}"
1085     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1086         enable_safe "${struct}_${member}"
1087 }
1088
1089 check_builtin(){
1090     log check_builtin "$@"
1091     name=$1
1092     headers=$2
1093     builtin=$3
1094     shift 3
1095     disable "$name"
1096     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1097 }
1098
1099 check_compile_assert(){
1100     log check_compile_assert "$@"
1101     name=$1
1102     headers=$2
1103     condition=$3
1104     shift 3
1105     disable "$name"
1106     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1107 }
1108
1109 require(){
1110     name="$1"
1111     header="$2"
1112     func="$3"
1113     shift 3
1114     check_lib $header $func "$@" || die "ERROR: $name not found"
1115 }
1116
1117 require2(){
1118     name="$1"
1119     headers="$2"
1120     func="$3"
1121     shift 3
1122     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1123 }
1124
1125 require_pkg_config(){
1126     pkg="$1"
1127     check_pkg_config "$@" || die "ERROR: $pkg not found"
1128     add_cflags    $(get_safe "${pkg}_cflags")
1129     add_extralibs $(get_safe "${pkg}_libs")
1130 }
1131
1132 hostcc_e(){
1133     eval printf '%s\\n' $HOSTCC_E
1134 }
1135
1136 hostcc_o(){
1137     eval printf '%s\\n' $HOSTCC_O
1138 }
1139
1140 check_host_cc(){
1141     log check_host_cc "$@"
1142     cat > $TMPC
1143     log_file $TMPC
1144     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1145 }
1146
1147 check_host_cpp(){
1148     log check_host_cpp "$@"
1149     cat > $TMPC
1150     log_file $TMPC
1151     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1152 }
1153
1154 check_host_cppflags(){
1155     log check_host_cppflags "$@"
1156     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1157 int x;
1158 EOF
1159 }
1160
1161 check_host_cflags(){
1162     log check_host_cflags "$@"
1163     set -- $($host_cflags_filter "$@")
1164     check_host_cc "$@" <<EOF && append host_cflags "$@"
1165 int x;
1166 EOF
1167 }
1168
1169 check_host_cpp_condition(){
1170     log check_host_cpp_condition "$@"
1171     header=$1
1172     condition=$2
1173     shift 2
1174     check_host_cpp "$@" <<EOF
1175 #include <$header>
1176 #if !($condition)
1177 #error "unsatisfied condition: $condition"
1178 #endif
1179 EOF
1180 }
1181
1182 apply(){
1183     file=$1
1184     shift
1185     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1186 }
1187
1188 cp_if_changed(){
1189     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1190     mkdir -p "$(dirname $2)"
1191     $cp_f "$1" "$2"
1192 }
1193
1194 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1195 # system-dependent things.
1196
1197 AVCODEC_COMPONENTS="
1198     bsfs
1199     decoders
1200     encoders
1201     hwaccels
1202     parsers
1203 "
1204
1205 AVDEVICE_COMPONENTS="
1206     indevs
1207     outdevs
1208 "
1209 AVFILTER_COMPONENTS="
1210     filters
1211 "
1212 AVFORMAT_COMPONENTS="
1213     demuxers
1214     muxers
1215     protocols
1216 "
1217
1218 AVRESAMPLE_COMPONENTS=""
1219 AVUTIL_COMPONENTS=""
1220
1221 COMPONENT_LIST="
1222     $AVCODEC_COMPONENTS
1223     $AVDEVICE_COMPONENTS
1224     $AVFILTER_COMPONENTS
1225     $AVFORMAT_COMPONENTS
1226     $AVRESAMPLE_COMPONENTS
1227     $AVUTIL_COMPONENTS
1228 "
1229
1230 EXAMPLE_LIST="
1231     avcodec_example
1232     filter_audio_example
1233     metadata_example
1234     output_example
1235     qsvdec_example
1236     transcode_aac_example
1237 "
1238
1239 EXTERNAL_LIBRARY_LIST="
1240     avisynth
1241     bzlib
1242     cuda
1243     frei0r
1244     gnutls
1245     libbs2b
1246     libcdio
1247     libdc1394
1248     libdcadec
1249     libfaac
1250     libfdk_aac
1251     libfontconfig
1252     libfreetype
1253     libgsm
1254     libilbc
1255     libkvazaar
1256     libmfx
1257     libmp3lame
1258     libopencore_amrnb
1259     libopencore_amrwb
1260     libopencv
1261     libopenh264
1262     libopenjpeg
1263     libopus
1264     libpulse
1265     librtmp
1266     libschroedinger
1267     libsnappy
1268     libspeex
1269     libtheora
1270     libtwolame
1271     libvo_aacenc
1272     libvo_amrwbenc
1273     libvorbis
1274     libvpx
1275     libwavpack
1276     libwebp
1277     libx264
1278     libx265
1279     libxavs
1280     libxcb
1281     libxcb_shm
1282     libxcb_xfixes
1283     libxvid
1284     mmal
1285     nvenc
1286     openssl
1287     x11grab
1288     zlib
1289 "
1290
1291 FEATURE_LIST="
1292     gray
1293     hardcoded_tables
1294     runtime_cpudetect
1295     safe_bitstream_reader
1296     shared
1297     small
1298     sram
1299     static
1300     swscale_alpha
1301 "
1302
1303 HWACCEL_LIST="
1304     d3d11va
1305     dxva2
1306     vaapi
1307     vda
1308     vdpau
1309 "
1310
1311 LIBRARY_LIST="
1312     avcodec
1313     avdevice
1314     avfilter
1315     avformat
1316     avresample
1317     avutil
1318     swscale
1319 "
1320
1321 LICENSE_LIST="
1322     gpl
1323     nonfree
1324     version3
1325 "
1326
1327 PROGRAM_LIST="
1328     avconv
1329     avplay
1330     avprobe
1331 "
1332
1333 SUBSYSTEM_LIST="
1334     dct
1335     doc
1336     error_resilience
1337     faan
1338     fft
1339     lsp
1340     lzo
1341     mdct
1342     network
1343     rdft
1344 "
1345
1346 CONFIG_LIST="
1347     $COMPONENT_LIST
1348     $EXAMPLE_LIST
1349     $EXTERNAL_LIBRARY_LIST
1350     $FEATURE_LIST
1351     $HWACCEL_LIST
1352     $LICENSE_LIST
1353     $LIBRARY_LIST
1354     $PROGRAM_LIST
1355     $SUBSYSTEM_LIST
1356     memalign_hack
1357     neon_clobber_test
1358     pic
1359     pod2man
1360     texi2html
1361     thumb
1362     valgrind_backtrace
1363     xmm_clobber_test
1364 "
1365
1366 THREADS_LIST="
1367     pthreads
1368     w32threads
1369 "
1370
1371 ATOMICS_LIST="
1372     atomics_gcc
1373     atomics_suncc
1374     atomics_win32
1375 "
1376
1377 ARCH_LIST="
1378     aarch64
1379     alpha
1380     arm
1381     avr32
1382     avr32_ap
1383     avr32_uc
1384     bfin
1385     ia64
1386     m68k
1387     mips
1388     mips64
1389     parisc
1390     ppc
1391     ppc64
1392     s390
1393     sh4
1394     sparc
1395     sparc64
1396     tilegx
1397     tilepro
1398     tomi
1399     x86
1400     x86_32
1401     x86_64
1402 "
1403
1404 ARCH_EXT_LIST_ARM="
1405     armv5te
1406     armv6
1407     armv6t2
1408     armv8
1409     neon
1410     vfp
1411     vfpv3
1412 "
1413
1414 ARCH_EXT_LIST_X86_SIMD="
1415     amd3dnow
1416     amd3dnowext
1417     avx
1418     avx2
1419     fma3
1420     fma4
1421     mmx
1422     mmxext
1423     sse
1424     sse2
1425     sse3
1426     sse4
1427     sse42
1428     ssse3
1429     xop
1430 "
1431
1432 ARCH_EXT_LIST_PPC="
1433     altivec
1434     dcbzl
1435     ldbrx
1436     power8
1437     ppc4xx
1438     vsx
1439 "
1440
1441 ARCH_EXT_LIST_X86="
1442     $ARCH_EXT_LIST_X86_SIMD
1443     cpunop
1444     i686
1445 "
1446
1447 ARCH_EXT_LIST_MIPS="
1448     loongson
1449     mips32r1
1450     mips64r1
1451     mips32r2
1452     mips64r2
1453     mips32r6
1454     mips64r6
1455 "
1456
1457 ARCH_EXT_LIST="
1458     $ARCH_EXT_LIST_ARM
1459     $ARCH_EXT_LIST_MIPS
1460     $ARCH_EXT_LIST_PPC
1461     $ARCH_EXT_LIST_X86
1462     vis
1463 "
1464
1465 ARCH_FEATURES="
1466     aligned_stack
1467     fast_64bit
1468     fast_clz
1469     fast_cmov
1470     local_aligned_8
1471     local_aligned_16
1472     simd_align_16
1473 "
1474
1475 BUILTIN_LIST="
1476     atomic_cas_ptr
1477     machine_rw_barrier
1478     MemoryBarrier
1479     mm_empty
1480     rdtsc
1481     sync_val_compare_and_swap
1482 "
1483 HAVE_LIST_CMDLINE="
1484     inline_asm
1485     symver
1486     yasm
1487 "
1488
1489 HAVE_LIST_PUB="
1490     bigendian
1491     fast_unaligned
1492 "
1493
1494 HEADERS_LIST="
1495     AVFoundation_AVFoundation_h
1496     alsa_asoundlib_h
1497     altivec_h
1498     arpa_inet_h
1499     cdio_paranoia_h
1500     cdio_paranoia_paranoia_h
1501     dev_bktr_ioctl_bt848_h
1502     dev_bktr_ioctl_meteor_h
1503     dev_ic_bt8xx_h
1504     dev_video_bktr_ioctl_bt848_h
1505     dev_video_meteor_ioctl_meteor_h
1506     direct_h
1507     dlfcn_h
1508     d3d11_h
1509     dxva_h
1510     gsm_h
1511     io_h
1512     mach_mach_time_h
1513     machine_ioctl_bt848_h
1514     machine_ioctl_meteor_h
1515     malloc_h
1516     poll_h
1517     sndio_h
1518     soundcard_h
1519     sys_mman_h
1520     sys_param_h
1521     sys_resource_h
1522     sys_select_h
1523     sys_soundcard_h
1524     sys_time_h
1525     sys_un_h
1526     sys_videoio_h
1527     unistd_h
1528     valgrind_valgrind_h
1529     windows_h
1530     winsock2_h
1531 "
1532
1533 INTRINSICS_LIST="
1534     intrinsics_neon
1535 "
1536
1537 MATH_FUNCS="
1538     atanf
1539     atan2f
1540     cbrtf
1541     cosf
1542     exp2
1543     exp2f
1544     expf
1545     isinf
1546     isnan
1547     ldexpf
1548     llrint
1549     llrintf
1550     log2
1551     log2f
1552     log10f
1553     lrint
1554     lrintf
1555     powf
1556     rint
1557     round
1558     roundf
1559     sinf
1560     trunc
1561     truncf
1562 "
1563
1564 SYSTEM_FUNCS="
1565     aligned_malloc
1566     clock_gettime
1567     closesocket
1568     CommandLineToArgvW
1569     CoTaskMemFree
1570     CryptGenRandom
1571     dlopen
1572     fcntl
1573     flt_lim
1574     fork
1575     getaddrinfo
1576     gethrtime
1577     getopt
1578     GetProcessAffinityMask
1579     GetProcessMemoryInfo
1580     GetProcessTimes
1581     getrusage
1582     GetSystemTimeAsFileTime
1583     gettimeofday
1584     gmtime_r
1585     inet_aton
1586     isatty
1587     jack_port_get_latency_range
1588     LoadLibrary
1589     localtime_r
1590     mach_absolute_time
1591     MapViewOfFile
1592     memalign
1593     mkstemp
1594     mmap
1595     mprotect
1596     nanosleep
1597     posix_memalign
1598     sched_getaffinity
1599     SetConsoleTextAttribute
1600     setmode
1601     setrlimit
1602     Sleep
1603     strerror_r
1604     sysconf
1605     sysctl
1606     usleep
1607     VirtualAlloc
1608 "
1609
1610 TOOLCHAIN_FEATURES="
1611     as_dn_directive
1612     as_func
1613     as_object_arch
1614     asm_mod_q
1615     attribute_may_alias
1616     attribute_packed
1617     ebp_available
1618     ebx_available
1619     gnu_as
1620     ibm_asm
1621     inline_asm_labels
1622     pragma_deprecated
1623     symver_asm_label
1624     symver_gnu_asm
1625     vfp_args
1626     xform_asm
1627     xmm_clobbers
1628 "
1629
1630 TYPES_LIST="
1631     CONDITION_VARIABLE_Ptr
1632     socklen_t
1633     struct_addrinfo
1634     struct_group_source_req
1635     struct_ip_mreq_source
1636     struct_ipv6_mreq
1637     struct_pollfd
1638     struct_rusage_ru_maxrss
1639     struct_sockaddr_in6
1640     struct_sockaddr_sa_len
1641     struct_sockaddr_storage
1642     struct_v4l2_frmivalenum_discrete
1643 "
1644
1645 HAVE_LIST="
1646     $ARCH_EXT_LIST
1647     $(add_suffix _external $ARCH_EXT_LIST)
1648     $(add_suffix _inline   $ARCH_EXT_LIST)
1649     $ARCH_FEATURES
1650     $ATOMICS_LIST
1651     $BUILTIN_LIST
1652     $HAVE_LIST_CMDLINE
1653     $HAVE_LIST_PUB
1654     $HEADERS_LIST
1655     $INTRINSICS_LIST
1656     $MATH_FUNCS
1657     $SYSTEM_FUNCS
1658     $THREADS_LIST
1659     $TOOLCHAIN_FEATURES
1660     $TYPES_LIST
1661     atomics_native
1662     dos_paths
1663     dxva2_lib
1664     libc_msvcrt
1665     libdc1394_1
1666     libdc1394_2
1667     sdl
1668     section_data_rel_ro
1669     threads
1670     vaapi_x11
1671     vdpau_x11
1672     xlib
1673 "
1674
1675 # options emitted with CONFIG_ prefix but not available on the command line
1676 CONFIG_EXTRA="
1677     aandcttables
1678     ac3dsp
1679     audio_frame_queue
1680     audiodsp
1681     blockdsp
1682     bswapdsp
1683     cabac
1684     dirac_parse
1685     dvprofile
1686     faandct
1687     faanidct
1688     fdctdsp
1689     flacdsp
1690     fmtconvert
1691     g722dsp
1692     gcrypt
1693     gmp
1694     golomb
1695     gplv3
1696     h263dsp
1697     h264chroma
1698     h264dsp
1699     h264pred
1700     h264qpel
1701     hpeldsp
1702     huffman
1703     huffyuvdsp
1704     huffyuvencdsp
1705     idctdsp
1706     iirfilter
1707     imdct15
1708     intrax8
1709     iso_media
1710     ividsp
1711     jpegtables
1712     libx262
1713     lgplv3
1714     lpc
1715     lzf
1716     me_cmp
1717     mpeg_er
1718     mpegaudio
1719     mpegaudiodsp
1720     mpegvideo
1721     mpegvideoenc
1722     mss34dsp
1723     pixblockdsp
1724     qpeldsp
1725     qsv
1726     qsvdec
1727     qsvenc
1728     rangecoder
1729     riffdec
1730     riffenc
1731     rtpdec
1732     rtpenc_chain
1733     rv34dsp
1734     sinewin
1735     snappy
1736     startcode
1737     texturedsp
1738     texturedspenc
1739     tpeldsp
1740     videodsp
1741     vp3dsp
1742     vp56dsp
1743     vp8dsp
1744     wma_freqs
1745     wmv2dsp
1746 "
1747
1748 CMDLINE_SELECT="
1749     $ARCH_EXT_LIST
1750     $CONFIG_LIST
1751     $HAVE_LIST_CMDLINE
1752     $THREADS_LIST
1753     asm
1754     cross_compile
1755     debug
1756     extra_warnings
1757     logging
1758     lto
1759     optimizations
1760     rpath
1761 "
1762
1763 PATHS_LIST="
1764     bindir
1765     datadir
1766     docdir
1767     incdir
1768     libdir
1769     mandir
1770     prefix
1771     shlibdir
1772 "
1773
1774 CMDLINE_SET="
1775     $PATHS_LIST
1776     ar
1777     arch
1778     as
1779     build_suffix
1780     cc
1781     objcc
1782     cpu
1783     cross_prefix
1784     custom_allocator
1785     dep_cc
1786     env
1787     extra_version
1788     host_cc
1789     host_cflags
1790     host_ld
1791     host_ldflags
1792     host_libs
1793     host_os
1794     ld
1795     logfile
1796     malloc_prefix
1797     nm
1798     optflags
1799     pkg_config
1800     pkg_config_flags
1801     random_seed
1802     samples
1803     sysinclude
1804     sysroot
1805     target_exec
1806     target_os
1807     target_path
1808     target_samples
1809     toolchain
1810 "
1811
1812 CMDLINE_APPEND="
1813     extra_cflags
1814     extra_objcflags
1815     host_cppflags
1816 "
1817
1818 # code dependency declarations
1819
1820 # architecture extensions
1821
1822 armv5te_deps="arm"
1823 armv6_deps="arm"
1824 armv6t2_deps="arm"
1825 armv8_deps="aarch64"
1826 neon_deps_any="aarch64 arm"
1827 intrinsics_neon_deps="neon"
1828 vfp_deps_any="aarch64 arm"
1829 vfpv3_deps="vfp"
1830
1831 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1832
1833 altivec_deps="ppc"
1834 ppc4xx_deps="ppc"
1835 vsx_deps="altivec"
1836 power8_deps="vsx"
1837
1838 cpunop_deps="i686"
1839 x86_64_select="i686"
1840 x86_64_suggest="fast_cmov"
1841
1842 amd3dnow_deps="mmx"
1843 amd3dnowext_deps="amd3dnow"
1844 i686_deps="x86"
1845 mmx_deps="x86"
1846 mmxext_deps="mmx"
1847 sse_deps="mmxext"
1848 sse2_deps="sse"
1849 sse3_deps="sse2"
1850 ssse3_deps="sse3"
1851 sse4_deps="ssse3"
1852 sse42_deps="sse4"
1853 avx_deps="sse42"
1854 xop_deps="avx"
1855 fma3_deps="avx"
1856 fma4_deps="avx"
1857 avx2_deps="avx"
1858
1859 mmx_external_deps="yasm"
1860 mmx_inline_deps="inline_asm"
1861 mmx_suggest="mmx_external mmx_inline"
1862
1863 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1864     eval dep=\$${ext}_deps
1865     eval ${ext}_external_deps='"${dep}_external"'
1866     eval ${ext}_inline_deps='"${dep}_inline"'
1867     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1868 done
1869
1870 aligned_stack_if_any="aarch64 ppc x86"
1871 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1872 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1873 fast_unaligned_if_any="aarch64 ppc x86"
1874 simd_align_16_if_any="altivec neon sse"
1875
1876 # system capabilities
1877 symver_if_any="symver_asm_label symver_gnu_asm"
1878 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1879
1880 # threading support
1881 atomics_gcc_if="sync_val_compare_and_swap"
1882 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1883 atomics_win32_if="MemoryBarrier"
1884 atomics_native_if_any="$ATOMICS_LIST"
1885 w32threads_deps="atomics_native"
1886 threads_if_any="$THREADS_LIST"
1887
1888 # subsystems
1889 dct_select="rdft"
1890 dirac_parse_select="golomb"
1891 error_resilience_select="me_cmp"
1892 faandct_deps="faan fdctdsp"
1893 faanidct_deps="faan idctdsp"
1894 intrax8_select="error_resilience"
1895 mdct_select="fft"
1896 rdft_select="fft"
1897 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1898 mpeg_er_select="error_resilience"
1899 mpegaudio_select="mpegaudiodsp"
1900 mpegaudiodsp_select="dct"
1901 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1902 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1903 nvenc_deps_any="dlopen LoadLibrary"
1904 nvenc_extralibs='$ldl'
1905 qsvdec_select="qsv"
1906 qsvenc_select="qsv"
1907
1908 # decoders / encoders
1909 aac_decoder_select="imdct15 mdct sinewin"
1910 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1911 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1912 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1913 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1914 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1915 adpcm_g722_decoder_select="g722dsp"
1916 adpcm_g722_encoder_select="g722dsp"
1917 aic_decoder_select="golomb idctdsp"
1918 alac_encoder_select="lpc"
1919 als_decoder_select="bswapdsp"
1920 amrnb_decoder_select="lsp"
1921 amrwb_decoder_select="lsp"
1922 amv_decoder_select="sp5x_decoder"
1923 ape_decoder_select="bswapdsp"
1924 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1925 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1926 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1927 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1928 atrac1_decoder_select="mdct sinewin"
1929 atrac3_decoder_select="mdct"
1930 atrac3p_decoder_select="mdct sinewin"
1931 bink_decoder_select="blockdsp hpeldsp"
1932 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1933 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1934 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1935 cllc_decoder_select="bswapdsp"
1936 comfortnoise_encoder_select="lpc"
1937 cook_decoder_select="audiodsp mdct sinewin"
1938 cscd_decoder_select="lzo"
1939 cscd_decoder_suggest="zlib"
1940 dca_decoder_select="fmtconvert mdct"
1941 dds_decoder_select="texturedsp"
1942 dnxhd_decoder_select="blockdsp idctdsp"
1943 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1944 dvvideo_decoder_select="dvprofile idctdsp"
1945 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1946 dxa_decoder_deps="zlib"
1947 dxv_decoder_select="lzf texturedsp"
1948 eac3_decoder_select="ac3_decoder"
1949 eac3_encoder_select="ac3_encoder"
1950 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1951 eatgq_decoder_select="aandcttables idctdsp"
1952 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1953 exr_decoder_deps="zlib"
1954 ffv1_decoder_select="golomb rangecoder"
1955 ffv1_encoder_select="rangecoder"
1956 ffvhuff_decoder_select="huffyuv_decoder"
1957 ffvhuff_encoder_select="huffyuv_encoder"
1958 fic_decoder_select="golomb"
1959 flac_decoder_select="flacdsp golomb"
1960 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1961 flashsv_decoder_deps="zlib"
1962 flashsv_encoder_deps="zlib"
1963 flashsv2_decoder_deps="zlib"
1964 flv_decoder_select="h263_decoder"
1965 flv_encoder_select="h263_encoder"
1966 fourxm_decoder_select="blockdsp bswapdsp"
1967 fraps_decoder_select="bswapdsp huffman"
1968 g2m_decoder_deps="zlib"
1969 g2m_decoder_select="blockdsp idctdsp jpegtables"
1970 h261_decoder_select="mpeg_er mpegvideo"
1971 h261_encoder_select="aandcttables mpegvideoenc"
1972 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1973 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1974 h263i_decoder_select="h263_decoder"
1975 h263p_encoder_select="h263_encoder"
1976 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1977 h264_decoder_suggest="error_resilience"
1978 h264_nvenc_encoder_deps="nvenc"
1979 h264_qsv_decoder_deps="libmfx"
1980 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1981 h264_qsv_encoder_deps="libmfx"
1982 h264_qsv_encoder_select="qsvenc"
1983 hap_decoder_select="snappy texturedsp"
1984 hap_encoder_deps="libsnappy"
1985 hap_encoder_select="texturedspenc"
1986 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1987 hevc_nvenc_encoder_deps="nvenc"
1988 hevc_qsv_encoder_deps="libmfx"
1989 hevc_qsv_decoder_deps="libmfx"
1990 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
1991 hevc_qsv_encoder_select="qsvenc"
1992 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1993 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1994 iac_decoder_select="imc_decoder"
1995 imc_decoder_select="bswapdsp fft mdct sinewin"
1996 indeo3_decoder_select="hpeldsp"
1997 indeo4_decoder_select="ividsp"
1998 indeo5_decoder_select="ividsp"
1999 interplay_video_decoder_select="hpeldsp"
2000 jpegls_decoder_select="golomb mjpeg_decoder"
2001 jpegls_encoder_select="golomb"
2002 jv_decoder_select="blockdsp"
2003 lagarith_decoder_select="huffyuvdsp"
2004 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2005 loco_decoder_select="golomb"
2006 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2007 metasound_decoder_select="lsp mdct sinewin"
2008 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2009 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2010 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2011 mjpegb_decoder_select="mjpeg_decoder"
2012 mlp_decoder_select="mlp_parser"
2013 motionpixels_decoder_select="bswapdsp"
2014 mp1_decoder_select="mpegaudio"
2015 mp1float_decoder_select="mpegaudio"
2016 mp2_decoder_select="mpegaudio"
2017 mp2float_decoder_select="mpegaudio"
2018 mp3_decoder_select="mpegaudio"
2019 mp3adu_decoder_select="mpegaudio"
2020 mp3adufloat_decoder_select="mpegaudio"
2021 mp3float_decoder_select="mpegaudio"
2022 mp3on4_decoder_select="mpegaudio"
2023 mp3on4float_decoder_select="mpegaudio"
2024 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2025 mpc8_decoder_select="mpegaudiodsp"
2026 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2027 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2028 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2029 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2030 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2031 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2032 mpeg2_qsv_decoder_deps="libmfx"
2033 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2034 mpeg2_qsv_encoder_deps="libmfx"
2035 mpeg2_qsv_encoder_select="qsvenc"
2036 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2037 mpeg4_encoder_select="h263_encoder"
2038 msa1_decoder_select="mss34dsp"
2039 msmpeg4v1_decoder_select="h263_decoder"
2040 msmpeg4v2_decoder_select="h263_decoder"
2041 msmpeg4v2_encoder_select="h263_encoder"
2042 msmpeg4v3_decoder_select="h263_decoder"
2043 msmpeg4v3_encoder_select="h263_encoder"
2044 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2045 mts2_decoder_select="mss34dsp"
2046 mxpeg_decoder_select="mjpeg_decoder"
2047 nellymoser_decoder_select="mdct sinewin"
2048 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2049 nuv_decoder_select="idctdsp lzo"
2050 nvenc_h264_encoder_deps="nvenc"
2051 nvenc_hevc_encoder_deps="nvenc"
2052 on2avc_decoder_select="mdct"
2053 opus_decoder_deps="avresample"
2054 opus_decoder_select="imdct15"
2055 png_decoder_deps="zlib"
2056 png_encoder_deps="zlib"
2057 png_encoder_select="huffyuvencdsp"
2058 prores_decoder_select="idctdsp"
2059 prores_encoder_select="fdctdsp"
2060 qcelp_decoder_select="lsp"
2061 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2062 ra_144_encoder_select="audio_frame_queue lpc"
2063 ralf_decoder_select="golomb"
2064 rscc_decoder_deps="zlib"
2065 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2066 rv10_encoder_select="h263_encoder"
2067 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2068 rv20_encoder_select="h263_encoder"
2069 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2070 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2071 screenpresso_decoder_deps="zlib"
2072 shorten_decoder_select="golomb"
2073 sipr_decoder_select="lsp"
2074 sp5x_decoder_select="mjpeg_decoder"
2075 svq1_decoder_select="hpeldsp"
2076 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2077 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2078 svq3_decoder_suggest="zlib"
2079 tak_decoder_select="audiodsp"
2080 tdsc_decoder_deps="zlib"
2081 tdsc_decoder_select="mjpeg_decoder"
2082 theora_decoder_select="vp3_decoder"
2083 thp_decoder_select="mjpeg_decoder"
2084 tiff_decoder_suggest="zlib"
2085 tiff_encoder_suggest="zlib"
2086 truehd_decoder_select="mlp_decoder"
2087 truemotion2_decoder_select="bswapdsp"
2088 truespeech_decoder_select="bswapdsp"
2089 tscc_decoder_deps="zlib"
2090 txd_decoder_select="texturedsp"
2091 twinvq_decoder_select="mdct lsp sinewin"
2092 utvideo_decoder_select="bswapdsp"
2093 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2094 vble_decoder_select="huffyuvdsp"
2095 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2096 vc1image_decoder_select="vc1_decoder"
2097 vorbis_decoder_select="mdct"
2098 vorbis_encoder_select="mdct"
2099 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2100 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2101 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2102 vp6a_decoder_select="vp6_decoder"
2103 vp6f_decoder_select="vp6_decoder"
2104 vp7_decoder_select="h264pred videodsp vp8dsp"
2105 vp8_decoder_select="h264pred videodsp vp8dsp"
2106 vp9_decoder_select="videodsp"
2107 webp_decoder_select="vp8_decoder"
2108 wmapro_decoder_select="mdct sinewin wma_freqs"
2109 wmav1_decoder_select="mdct sinewin wma_freqs"
2110 wmav1_encoder_select="mdct sinewin wma_freqs"
2111 wmav2_decoder_select="mdct sinewin wma_freqs"
2112 wmav2_encoder_select="mdct sinewin wma_freqs"
2113 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2114 wmv1_decoder_select="h263_decoder"
2115 wmv1_encoder_select="h263_encoder"
2116 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2117 wmv2_encoder_select="h263_encoder wmv2dsp"
2118 wmv3_decoder_select="vc1_decoder"
2119 wmv3image_decoder_select="wmv3_decoder"
2120 zerocodec_decoder_deps="zlib"
2121 zlib_decoder_deps="zlib"
2122 zlib_encoder_deps="zlib"
2123 zmbv_decoder_deps="zlib"
2124 zmbv_encoder_deps="zlib"
2125
2126 # hardware accelerators
2127 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2128 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2129 vaapi_deps="va_va_h"
2130 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2131 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2132 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2133
2134 h263_vaapi_hwaccel_deps="vaapi"
2135 h263_vaapi_hwaccel_select="h263_decoder"
2136 h264_d3d11va_hwaccel_deps="d3d11va"
2137 h264_d3d11va_hwaccel_select="h264_decoder"
2138 h264_dxva2_hwaccel_deps="dxva2"
2139 h264_dxva2_hwaccel_select="h264_decoder"
2140 h264_mmal_decoder_deps="mmal"
2141 h264_mmal_hwaccel_deps="mmal"
2142 h264_mmal_decoder_select="h264_decoder"
2143 h264_mmal_encoder_deps="mmal"
2144 h264_qsv_hwaccel_deps="libmfx"
2145 h264_vaapi_hwaccel_deps="vaapi"
2146 h264_vaapi_hwaccel_select="h264_decoder"
2147 h264_vda_hwaccel_deps="vda"
2148 h264_vda_hwaccel_select="h264_decoder"
2149 h264_vda_old_hwaccel_deps="vda"
2150 h264_vda_old_hwaccel_select="h264_decoder"
2151 h264_vdpau_hwaccel_deps="vdpau"
2152 h264_vdpau_hwaccel_select="h264_decoder"
2153 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2154 hevc_d3d11va_hwaccel_select="hevc_decoder"
2155 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2156 hevc_dxva2_hwaccel_select="hevc_decoder"
2157 hevc_qsv_hwaccel_deps="libmfx"
2158 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2159 hevc_vdpau_hwaccep_select="hevc_decoder"
2160 mpeg1_vdpau_hwaccel_deps="vdpau"
2161 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2162 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2163 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2164 mpeg2_dxva2_hwaccel_deps="dxva2"
2165 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2166 mpeg2_qsv_hwaccel_deps="libmfx"
2167 mpeg2_vaapi_hwaccel_deps="vaapi"
2168 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2169 mpeg2_vdpau_hwaccel_deps="vdpau"
2170 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2171 mpeg4_vaapi_hwaccel_deps="vaapi"
2172 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2173 mpeg4_vdpau_hwaccel_deps="vdpau"
2174 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2175 vc1_d3d11va_hwaccel_deps="d3d11va"
2176 vc1_d3d11va_hwaccel_select="vc1_decoder"
2177 vc1_dxva2_hwaccel_deps="dxva2"
2178 vc1_dxva2_hwaccel_select="vc1_decoder"
2179 vc1_vaapi_hwaccel_deps="vaapi"
2180 vc1_vaapi_hwaccel_select="vc1_decoder"
2181 vc1_vdpau_hwaccel_deps="vdpau"
2182 vc1_vdpau_hwaccel_select="vc1_decoder"
2183 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2184 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2185 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2186 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2187
2188 # parsers
2189 h264_parser_select="h264_decoder"
2190 hevc_parser_select="golomb"
2191 mpegvideo_parser_select="mpegvideo"
2192 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2193 vc1_parser_select="mpegvideo startcode vc1_decoder"
2194
2195 # bitstream_filters
2196 mjpeg2jpeg_bsf_select="jpegtables"
2197
2198 # external libraries
2199 libdcadec_decoder_deps="libdcadec"
2200 libfaac_encoder_deps="libfaac"
2201 libfaac_encoder_select="audio_frame_queue"
2202 libfdk_aac_decoder_deps="libfdk_aac"
2203 libfdk_aac_encoder_deps="libfdk_aac"
2204 libfdk_aac_encoder_select="audio_frame_queue"
2205 libgsm_decoder_deps="libgsm"
2206 libgsm_encoder_deps="libgsm"
2207 libgsm_ms_decoder_deps="libgsm"
2208 libgsm_ms_encoder_deps="libgsm"
2209 libilbc_decoder_deps="libilbc"
2210 libilbc_encoder_deps="libilbc"
2211 libkvazaar_encoder_deps="libkvazaar"
2212 libmp3lame_encoder_deps="libmp3lame"
2213 libmp3lame_encoder_select="audio_frame_queue"
2214 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2215 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2216 libopencore_amrnb_encoder_select="audio_frame_queue"
2217 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2218 libopenh264_encoder_deps="libopenh264"
2219 libopenjpeg_decoder_deps="libopenjpeg"
2220 libopenjpeg_encoder_deps="libopenjpeg"
2221 libopus_decoder_deps="libopus"
2222 libopus_encoder_deps="libopus"
2223 libopus_encoder_select="audio_frame_queue"
2224 libschroedinger_decoder_deps="libschroedinger"
2225 libschroedinger_encoder_deps="libschroedinger"
2226 libspeex_decoder_deps="libspeex"
2227 libspeex_encoder_deps="libspeex"
2228 libspeex_encoder_select="audio_frame_queue"
2229 libtheora_encoder_deps="libtheora"
2230 libtwolame_encoder_deps="libtwolame"
2231 libvo_aacenc_encoder_deps="libvo_aacenc"
2232 libvo_aacenc_encoder_select="audio_frame_queue"
2233 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2234 libvorbis_encoder_deps="libvorbis"
2235 libvorbis_encoder_select="audio_frame_queue"
2236 libvpx_vp8_decoder_deps="libvpx"
2237 libvpx_vp8_encoder_deps="libvpx"
2238 libvpx_vp9_decoder_deps="libvpx"
2239 libvpx_vp9_encoder_deps="libvpx"
2240 libwavpack_encoder_deps="libwavpack"
2241 libwebp_encoder_deps="libwebp"
2242 libx262_encoder_deps="libx262"
2243 libx264_encoder_deps="libx264"
2244 libx265_encoder_deps="libx265"
2245 libxavs_encoder_deps="libxavs"
2246 libxvid_encoder_deps="libxvid"
2247
2248 # demuxers / muxers
2249 ac3_demuxer_select="ac3_parser"
2250 asf_demuxer_select="riffdec"
2251 asf_muxer_select="riffenc"
2252 asf_stream_muxer_select="asf_muxer"
2253 avi_demuxer_select="iso_media riffdec"
2254 avi_muxer_select="riffenc"
2255 avisynth_demuxer_deps="avisynth"
2256 avisynth_demuxer_select="riffdec"
2257 caf_demuxer_select="iso_media riffdec"
2258 dash_muxer_select="mp4_muxer"
2259 dirac_demuxer_select="dirac_parser"
2260 dv_demuxer_select="dvprofile"
2261 dv_muxer_select="dvprofile"
2262 dxa_demuxer_select="riffdec"
2263 eac3_demuxer_select="ac3_parser"
2264 f4v_muxer_select="mov_muxer"
2265 flac_demuxer_select="flac_parser"
2266 hds_muxer_select="flv_muxer"
2267 hls_muxer_select="mpegts_muxer"
2268 ipod_muxer_select="mov_muxer"
2269 ismv_muxer_select="mov_muxer"
2270 matroska_audio_muxer_select="matroska_muxer"
2271 matroska_demuxer_select="iso_media riffdec"
2272 matroska_demuxer_suggest="bzlib lzo zlib"
2273 matroska_muxer_select="iso_media riffenc"
2274 mmf_muxer_select="riffenc"
2275 mov_demuxer_select="iso_media riffdec"
2276 mov_demuxer_suggest="zlib"
2277 mov_muxer_select="iso_media riffenc rtpenc_chain"
2278 mp3_demuxer_select="mpegaudio_parser"
2279 mp4_muxer_select="mov_muxer"
2280 mpegts_demuxer_select="iso_media"
2281 mpegts_muxer_select="adts_muxer latm_muxer"
2282 mpegtsraw_demuxer_select="mpegts_demuxer"
2283 mxf_d10_muxer_select="mxf_muxer"
2284 nut_muxer_select="riffenc"
2285 nuv_demuxer_select="riffdec"
2286 oga_muxer_select="ogg_muxer"
2287 ogg_demuxer_select="dirac_parse"
2288 opus_muxer_select="ogg_muxer"
2289 psp_muxer_select="mov_muxer"
2290 rtp_demuxer_select="sdp_demuxer"
2291 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2292 rtsp_demuxer_select="http_protocol rtpdec"
2293 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2294 sap_demuxer_select="sdp_demuxer"
2295 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2296 sdp_demuxer_select="rtpdec"
2297 smoothstreaming_muxer_select="ismv_muxer"
2298 spdif_muxer_select="aac_parser"
2299 spx_muxer_select="ogg_muxer"
2300 swf_demuxer_suggest="zlib"
2301 tak_demuxer_select="tak_parser"
2302 tg2_muxer_select="mov_muxer"
2303 tgp_muxer_select="mov_muxer"
2304 w64_demuxer_select="wav_demuxer"
2305 wav_demuxer_select="riffdec"
2306 wav_muxer_select="riffenc"
2307 webm_muxer_select="iso_media riffenc"
2308 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2309 wtv_demuxer_select="mpegts_demuxer riffdec"
2310 xmv_demuxer_select="riffdec"
2311 xwma_demuxer_select="riffdec"
2312
2313 # indevs / outdevs
2314 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2315 alsa_outdev_deps="alsa_asoundlib_h"
2316 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2317 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2318 dv1394_indev_deps="dv1394"
2319 dv1394_indev_select="dv_demuxer"
2320 fbdev_indev_deps="linux_fb_h"
2321 jack_indev_deps="jack_jack_h pthreads"
2322 libcdio_indev_deps="libcdio"
2323 libdc1394_indev_deps="libdc1394"
2324 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2325 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2326 pulse_indev_deps="libpulse"
2327 sndio_indev_deps="sndio_h"
2328 sndio_outdev_deps="sndio_h"
2329 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2330 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2331 vfwcap_indev_extralibs="-lavicap32"
2332 x11grab_indev_deps="x11grab"
2333 x11grab_xcb_indev_deps="libxcb"
2334
2335 # protocols
2336 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2337 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2338 ffrtmpcrypt_protocol_select="tcp_protocol"
2339 ffrtmphttp_protocol_deps="!librtmp_protocol"
2340 ffrtmphttp_protocol_select="http_protocol"
2341 gopher_protocol_select="network"
2342 http_protocol_select="tcp_protocol"
2343 httpproxy_protocol_select="tcp_protocol"
2344 https_protocol_select="tls_protocol"
2345 icecast_protocol_select="http_protocol"
2346 librtmp_protocol_deps="librtmp"
2347 librtmpe_protocol_deps="librtmp"
2348 librtmps_protocol_deps="librtmp"
2349 librtmpt_protocol_deps="librtmp"
2350 librtmpte_protocol_deps="librtmp"
2351 mmsh_protocol_select="http_protocol"
2352 mmst_protocol_select="network"
2353 rtmp_protocol_deps="!librtmp_protocol"
2354 rtmp_protocol_select="tcp_protocol"
2355 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2356 rtmps_protocol_deps="!librtmp_protocol"
2357 rtmps_protocol_select="tls_protocol"
2358 rtmpt_protocol_select="ffrtmphttp_protocol"
2359 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2360 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2361 rtp_protocol_select="udp_protocol"
2362 sctp_protocol_deps="struct_sctp_event_subscribe"
2363 sctp_protocol_select="network"
2364 srtp_protocol_select="rtp_protocol"
2365 tcp_protocol_select="network"
2366 tls_gnutls_protocol_deps="gnutls"
2367 tls_gnutls_protocol_select="tcp_protocol"
2368 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2369 tls_openssl_protocol_select="tcp_protocol"
2370 tls_protocol_select_any="tls_gnutls_protocol tls_openssl_protocol"
2371 udp_protocol_select="network"
2372 unix_protocol_deps="sys_un_h"
2373 unix_protocol_select="network"
2374
2375 # filters
2376 blackframe_filter_deps="gpl"
2377 boxblur_filter_deps="gpl"
2378 bs2b_filter_deps="libbs2b"
2379 cropdetect_filter_deps="gpl"
2380 delogo_filter_deps="gpl"
2381 drawtext_filter_deps="libfreetype"
2382 frei0r_filter_deps="frei0r dlopen"
2383 frei0r_filter_extralibs='$ldl'
2384 frei0r_src_filter_deps="frei0r dlopen"
2385 frei0r_src_filter_extralibs='$ldl'
2386 hqdn3d_filter_deps="gpl"
2387 hwupload_cuda_filter_deps="cuda"
2388 interlace_filter_deps="gpl"
2389 ocv_filter_deps="libopencv"
2390 resample_filter_deps="avresample"
2391 scale_filter_deps="swscale"
2392
2393 # examples
2394 avcodec_example_deps="avcodec avutil"
2395 filter_audio_example_deps="avfilter avutil"
2396 metadata_example_deps="avformat avutil"
2397 output_example_deps="avcodec avformat avutil swscale"
2398 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2399 transcode_aac_example_deps="avcodec avformat avresample"
2400
2401 # libraries, in linking order
2402 avcodec_deps="avutil"
2403 avdevice_deps="avformat avcodec avutil"
2404 avfilter_deps="avutil"
2405 avformat_deps="avcodec avutil"
2406 avresample_deps="avutil"
2407 swscale_deps="avutil"
2408
2409 # programs
2410 avconv_deps="avcodec avfilter avformat avresample swscale"
2411 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2412                fps_filter null_filter resample_filter scale_filter
2413                setpts_filter trim_filter"
2414 avplay_deps="avcodec avfilter avformat avresample sdl"
2415 avplay_libs='$sdl_libs'
2416 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2417 avprobe_deps="avcodec avformat"
2418
2419 # documentation
2420 pod2man_deps="doc"
2421 texi2html_deps="doc"
2422
2423 # default parameters
2424
2425 logfile="config.log"
2426
2427 # installation paths
2428 prefix_default="/usr/local"
2429 bindir_default='${prefix}/bin'
2430 datadir_default='${prefix}/share/avconv'
2431 docdir_default='${prefix}/share/doc/libav'
2432 incdir_default='${prefix}/include'
2433 libdir_default='${prefix}/lib'
2434 mandir_default='${prefix}/share/man'
2435 shlibdir_default="$libdir_default"
2436
2437 # toolchain
2438 ar_default="ar"
2439 cc_default="gcc"
2440 host_cc_default="gcc"
2441 cp_f="cp -f"
2442 ln_s="ln -s -f"
2443 nm_default="nm -g"
2444 objformat="elf"
2445 pkg_config_default=pkg-config
2446 ranlib="ranlib"
2447 strip="strip"
2448 yasmexe="yasm"
2449
2450 # machine
2451 arch_default=$(uname -m)
2452 cpu="generic"
2453 intrinsics="none"
2454
2455 # OS
2456 target_os_default=$(tolower $(uname -s))
2457 host_os=$target_os_default
2458
2459 # configurable options
2460 enable asm
2461 enable debug
2462 enable doc
2463 enable faan faandct faanidct
2464 enable optimizations
2465 enable safe_bitstream_reader
2466 enable static
2467 enable swscale_alpha
2468 enable valgrind_backtrace
2469
2470 # By default, enable only those hwaccels that have no external dependencies.
2471 enable d3d11va dxva2 vda vdpau
2472
2473 # build settings
2474 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2475 LIBPREF="lib"
2476 LIBSUF=".a"
2477 FULLNAME='$(NAME)$(BUILDSUF)'
2478 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2479 SLIBPREF="lib"
2480 SLIBSUF=".so"
2481 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2482 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2483 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2484 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2485 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2486 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2487
2488 asflags_filter=echo
2489 cflags_filter=echo
2490 ldflags_filter=echo
2491
2492 AS_C='-c'
2493 AS_O='-o $@'
2494 CC_C='-c'
2495 CC_E='-E -o $@'
2496 CC_O='-o $@'
2497 OBJCC_C='-c'
2498 OBJCC_E='-E -o $@'
2499 OBJCC_O='-o $@'
2500 LD_O='-o $@'
2501 LD_LIB='-l%'
2502 LD_PATH='-L'
2503 HOSTCC_C='-c'
2504 HOSTCC_E='-E -o $@'
2505 HOSTCC_O='-o $@'
2506 HOSTLD_O='-o $@'
2507
2508 host_libs='-lm'
2509 host_cflags_filter=echo
2510 host_ldflags_filter=echo
2511
2512 target_path='$(CURDIR)'
2513
2514 # since the object filename is not given with the -MM flag, the compiler
2515 # is only able to print the basename, and we must add the path ourselves
2516 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2517 DEPFLAGS='-MM'
2518
2519 # find source path
2520 if test -f configure; then
2521     source_path=.
2522 else
2523     source_path=$(cd $(dirname "$0"); pwd)
2524     echo "$source_path" | grep -q '[[:blank:]]' &&
2525         die "Out of tree builds are impossible with whitespace in source path."
2526     test -e "$source_path/config.h" &&
2527         die "Out of tree builds are impossible with config.h in source dir."
2528 fi
2529
2530 for v in "$@"; do
2531     r=${v#*=}
2532     l=${v%"$r"}
2533     r=$(sh_quote "$r")
2534     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2535 done
2536
2537 find_things(){
2538     thing=$1
2539     pattern=$2
2540     file=$source_path/$3
2541     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2542 }
2543
2544 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2545 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2546 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2547 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2548 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2549 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2550 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2551 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2552 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2553 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2554 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2555
2556 ALL_COMPONENTS="
2557     $BSF_LIST
2558     $DECODER_LIST
2559     $DEMUXER_LIST
2560     $ENCODER_LIST
2561     $FILTER_LIST
2562     $HWACCEL_LIST
2563     $INDEV_LIST
2564     $MUXER_LIST
2565     $OUTDEV_LIST
2566     $PARSER_LIST
2567     $PROTOCOL_LIST
2568 "
2569
2570 enable $ARCH_EXT_LIST
2571
2572 die_unknown(){
2573     echo "Unknown option \"$1\"."
2574     echo "See $0 --help for available options."
2575     exit 1
2576 }
2577
2578 print_3_columns() {
2579     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2580 }
2581
2582 show_list() {
2583     suffix=_$1
2584     shift
2585     echo $* | sed s/$suffix//g | print_3_columns
2586     exit 0
2587 }
2588
2589 rand_list(){
2590     IFS=', '
2591     set -- $*
2592     unset IFS
2593     for thing; do
2594         comp=${thing%:*}
2595         prob=${thing#$comp}
2596         prob=${prob#:}
2597         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2598         echo "prob ${prob:-0.5}"
2599         printf '%s\n' $comp
2600     done
2601 }
2602
2603 do_random(){
2604     action=$1
2605     shift
2606     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2607     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2608 }
2609
2610 for opt do
2611     optval="${opt#*=}"
2612     case "$opt" in
2613         --extra-ldflags=*)
2614             add_ldflags $optval
2615         ;;
2616         --extra-ldexeflags=*)
2617             add_ldexeflags $optval
2618         ;;
2619         --extra-libs=*)
2620             add_extralibs $optval
2621         ;;
2622         --disable-devices)
2623             disable $INDEV_LIST $OUTDEV_LIST
2624         ;;
2625         --enable-debug=*)
2626             debuglevel="$optval"
2627         ;;
2628         --disable-programs)
2629             disable $PROGRAM_LIST
2630         ;;
2631         --disable-everything)
2632             map 'eval disable \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2633             enable_deep_force $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2634         ;;
2635         --disable-all)
2636             map 'eval disable \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2637             disable $LIBRARY_LIST $PROGRAM_LIST doc
2638         ;;
2639         --enable-random|--disable-random)
2640             action=${opt%%-random}
2641             do_random ${action#--} $COMPONENT_LIST
2642         ;;
2643         --enable-random=*|--disable-random=*)
2644             action=${opt%%-random=*}
2645             do_random ${action#--} $optval
2646         ;;
2647         --enable-*=*|--disable-*=*)
2648             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2649             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2650             eval list=\$$(toupper $thing)_LIST
2651             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2652             test $action = enable && action="request"
2653             $action $(filter "$name" $list)
2654         ;;
2655         --enable-avserver|--disable-avserver*)
2656             warn "avserver has been removed, the ${opt} option is only"\
2657                  "provided for compatibility and will be removed in the future"
2658         ;;
2659         --enable-?*|--disable-?*)
2660             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2661             if is_in $option $COMPONENT_LIST; then
2662                 test $action = enable && action="enable_deep_force"
2663                 eval $action \$$(toupper ${option%s})_LIST
2664             elif is_in $option $CMDLINE_SELECT; then
2665                 test $action = enable && action="request"
2666                 $action $option
2667             else
2668                 die_unknown $opt
2669             fi
2670         ;;
2671         --list-*)
2672             NAME="${opt#--list-}"
2673             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2674             NAME=${NAME%s}
2675             eval show_list $NAME \$$(toupper $NAME)_LIST
2676         ;;
2677         --help|-h) show_help
2678         ;;
2679         *)
2680             optname="${opt%%=*}"
2681             optname="${optname#--}"
2682             optname=$(echo "$optname" | sed 's/-/_/g')
2683             if is_in $optname $CMDLINE_SET; then
2684                 eval $optname='$optval'
2685             elif is_in $optname $CMDLINE_APPEND; then
2686                 append $optname "$optval"
2687             else
2688                 die_unknown $opt
2689             fi
2690         ;;
2691     esac
2692 done
2693
2694 for e in $env; do
2695     eval "export $e"
2696 done
2697
2698 disabled logging && logfile=/dev/null
2699
2700 # Enable the default components if not disabled explicitly
2701
2702 enable_weak $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2703
2704 # Disable all the library-specific components if the library itself
2705 # is disabled, see AVCODEC_LIST and following _LIST variables.
2706
2707 disable_components(){
2708     disabled ${1} && disable_weak $(
2709         eval components="\$$(toupper ${1})_COMPONENTS"
2710         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2711     )
2712 }
2713
2714 map 'disable_components $v' $LIBRARY_LIST
2715
2716 # Mark components that had not been enabled/disabled explicitly
2717 # as enabled
2718
2719 for n in $COMPONENT_LIST; do
2720     v=$(toupper ${n%s})_LIST
2721     eval enable_weak \$$v
2722     eval ${n}_if_any="\$$v"
2723 done
2724
2725 # Make so that disabled libraries are enabled if a component
2726 # of them is requested
2727
2728 for n in $LIBRARY_LIST; do
2729     v=$(toupper ${n})_COMPONENTS
2730     eval ${n}_if_any="\$$v"
2731 done
2732
2733 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2734 set >> $logfile
2735
2736 case "$toolchain" in
2737     *-asan)
2738         cc_default="${toolchain%-asan}"
2739         add_cflags  -fsanitize=address
2740         add_ldflags -fsanitize=address
2741     ;;
2742     *-tsan)
2743         cc_default="${toolchain%-tsan}"
2744         add_cflags  -fsanitize=thread -pie
2745         add_ldflags -fsanitize=thread -pie
2746         case "$toolchain" in
2747             gcc-tsan)
2748                 add_cflags  -fPIC
2749                 add_ldflags -fPIC
2750                 ;;
2751         esac
2752     ;;
2753     *-usan)
2754         cc_default="${toolchain%-usan}"
2755         add_cflags  -fsanitize=undefined
2756         add_ldflags -fsanitize=undefined
2757         case "$toolchain" in
2758             clang-usan)
2759                 add_cflags -O1
2760                 ;;
2761         esac
2762     ;;
2763     valgrind-*)
2764         target_exec_default="valgrind"
2765         case "$toolchain" in
2766             valgrind-massif)
2767                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2768                 ;;
2769             valgrind-memcheck)
2770                 target_exec_args="--track-origins=yes --leak-check=full"
2771                 ;;
2772         esac
2773     ;;
2774     msvc)
2775         # Check whether the current MSVC version needs the C99 converter.
2776         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2777         # support enough of C99 to build libav. Default to the new
2778         # behaviour if the regexp was unable to match anything, since this
2779         # successfully parses the version number of existing supported
2780         # versions that require the converter (MSVC 2010 and 2012).
2781         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2782         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2783             cc_default="cl"
2784         else
2785             cc_default="c99wrap cl"
2786         fi
2787         ld_default="$source_path/compat/windows/mslink"
2788         nm_default="dumpbin -symbols"
2789         ar_default="lib"
2790         case "$arch" in
2791         arm*)
2792             as_default="armasm"
2793             ;;
2794         esac
2795         target_os_default="win32"
2796         # Use a relative path for TMPDIR. This makes sure all the
2797         # ffconf temp files are written with a relative path, avoiding
2798         # issues with msys/win32 path conversion for MSVC parameters
2799         # such as -Fo<file> or -out:<file>.
2800         TMPDIR=.
2801     ;;
2802     icl)
2803         cc_default="icl"
2804         ld_default="xilink"
2805         nm_default="dumpbin -symbols"
2806         ar_default="xilib"
2807         target_os_default="win32"
2808         TMPDIR=.
2809     ;;
2810     gcov)
2811         add_cflags  -fprofile-arcs -ftest-coverage
2812         add_ldflags -fprofile-arcs -ftest-coverage
2813     ;;
2814     hardened)
2815         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2816         add_cflags   -fno-strict-overflow -fstack-protector-all
2817         add_ldflags  -Wl,-z,relro -Wl,-z,now
2818     ;;
2819     ?*)
2820         die "Unknown toolchain $toolchain"
2821     ;;
2822 esac
2823
2824 test -n "$cross_prefix" && enable cross_compile
2825
2826 if enabled cross_compile; then
2827     test -n "$arch" && test -n "$target_os" ||
2828         die "Must specify target arch and OS when cross-compiling"
2829 fi
2830
2831 ar_default="${cross_prefix}${ar_default}"
2832 cc_default="${cross_prefix}${cc_default}"
2833 occ_default="${cross_prefix}${occ_default}"
2834 nm_default="${cross_prefix}${nm_default}"
2835 pkg_config_default="${cross_prefix}${pkg_config_default}"
2836 ranlib="${cross_prefix}${ranlib}"
2837 strip="${cross_prefix}${strip}"
2838
2839 sysinclude_default="${sysroot}/usr/include"
2840
2841 set_default arch cc pkg_config sysinclude target_exec target_os
2842 enabled cross_compile || host_cc_default=$cc
2843 set_default host_cc
2844
2845 if ! $pkg_config --version >/dev/null 2>&1; then
2846     warn "$pkg_config not found, library detection may fail."
2847     pkg_config=false
2848 fi
2849
2850 exesuf() {
2851     case $1 in
2852         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2853     esac
2854 }
2855
2856 EXESUF=$(exesuf $target_os)
2857 HOSTEXESUF=$(exesuf $host_os)
2858
2859 # set temporary file name
2860 : ${TMPDIR:=$TEMPDIR}
2861 : ${TMPDIR:=$TMP}
2862 : ${TMPDIR:=/tmp}
2863
2864 if ! check_cmd mktemp -u XXXXXX; then
2865     # simple replacement for missing mktemp
2866     # NOT SAFE FOR GENERAL USE
2867     mktemp(){
2868         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2869     }
2870 fi
2871
2872 tmpfile(){
2873     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2874         (set -C; exec > $tmp) 2>/dev/null ||
2875         die "Unable to create temporary file in $TMPDIR."
2876     append TMPFILES $tmp
2877     eval $1=$tmp
2878 }
2879
2880 trap 'rm -f -- $TMPFILES' EXIT
2881
2882 tmpfile TMPASM .asm
2883 tmpfile TMPC   .c
2884 tmpfile TMPE   $EXESUF
2885 tmpfile TMPH   .h
2886 tmpfile TMPO   .o
2887 tmpfile TMPS   .S
2888 tmpfile TMPSH  .sh
2889 tmpfile TMPV   .ver
2890
2891 unset -f mktemp
2892
2893 chmod +x $TMPE
2894
2895 # make sure we can execute files in $TMPDIR
2896 cat > $TMPSH 2>> $logfile <<EOF
2897 #! /bin/sh
2898 EOF
2899 chmod +x $TMPSH >> $logfile 2>&1
2900 if ! $TMPSH >> $logfile 2>&1; then
2901     cat <<EOF
2902 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2903 variable to another directory and make sure that it is not mounted noexec.
2904 EOF
2905     die "Sanity test failed."
2906 fi
2907
2908 armasm_flags(){
2909     for flag; do
2910         case $flag in
2911             # Filter out MSVC cl.exe options from cflags that shouldn't
2912             # be passed to gas-preprocessor
2913             -M[TD]*)                                            ;;
2914             *)                  echo $flag                      ;;
2915         esac
2916    done
2917 }
2918
2919 ccc_flags(){
2920     for flag; do
2921         case $flag in
2922             -std=c99)           echo -c99                       ;;
2923             -mcpu=*)            echo -arch ${flag#*=}           ;;
2924             -mieee)             echo -ieee                      ;;
2925             -O*|-fast)          echo $flag                      ;;
2926             -fno-math-errno)    echo -assume nomath_errno       ;;
2927             -g)                 echo -g3                        ;;
2928             -Wall)              echo -msg_enable level2         ;;
2929             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2930             -Wl,*)              echo $flag                      ;;
2931             -f*|-W*)                                            ;;
2932             *)                  echo $flag                      ;;
2933         esac
2934    done
2935 }
2936
2937 cparser_flags(){
2938     for flag; do
2939         case $flag in
2940             -Wno-switch)             echo -Wno-switch-enum ;;
2941             -Wno-format-zero-length) ;;
2942             -Wdisabled-optimization) ;;
2943             -Wno-pointer-sign)       echo -Wno-other ;;
2944             *)                       echo $flag ;;
2945         esac
2946     done
2947 }
2948
2949 msvc_common_flags(){
2950     for flag; do
2951         case $flag in
2952             # In addition to specifying certain flags under the compiler
2953             # specific filters, they must be specified here as well or else the
2954             # generic catch all at the bottom will print the original flag.
2955             -Wall)                ;;
2956             -std=c99)             ;;
2957             # Common flags
2958             -fomit-frame-pointer) ;;
2959             -g)                   echo -Z7 ;;
2960             -fno-math-errno)      ;;
2961             -fno-common)          ;;
2962             -fno-signed-zeros)    ;;
2963             -fPIC)                ;;
2964             -mthumb)              ;;
2965             -march=*)             ;;
2966             -lz)                  echo zlib.lib ;;
2967             -lavifil32)           echo vfw32.lib ;;
2968             -lavicap32)           echo vfw32.lib user32.lib ;;
2969             -lx264)               echo libx264.lib ;;
2970             -l*)                  echo ${flag#-l}.lib ;;
2971             -L*)                  echo -libpath:${flag#-L} ;;
2972             *)                    echo $flag ;;
2973         esac
2974     done
2975 }
2976
2977 msvc_flags(){
2978     msvc_common_flags "$@"
2979     for flag; do
2980         case $flag in
2981             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2982                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2983                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2984                                        -wd4273 -wd4554 -wd4701 ;;
2985         esac
2986     done
2987 }
2988
2989 icl_flags(){
2990     msvc_common_flags "$@"
2991     for flag; do
2992         case $flag in
2993             # Despite what Intel's documentation says -Wall, which is supported
2994             # on Windows, does enable remarks so disable them here.
2995             -Wall)                echo $flag -Qdiag-disable:remark ;;
2996             -std=c99)             echo -Qstd=c99 ;;
2997         esac
2998     done
2999 }
3000
3001 pgi_flags(){
3002     for flag; do
3003         case $flag in
3004             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3005             -fomit-frame-pointer) echo -Mnoframe ;;
3006             -g)                   echo -gopt ;;
3007             *)                    echo $flag ;;
3008         esac
3009     done
3010 }
3011
3012 suncc_flags(){
3013     for flag; do
3014         case $flag in
3015             -march=*|-mcpu=*)
3016                 case "${flag#*=}" in
3017                     native)                   echo -xtarget=native       ;;
3018                     v9|niagara)               echo -xarch=sparc          ;;
3019                     ultrasparc)               echo -xarch=sparcvis       ;;
3020                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3021                     i586|pentium)             echo -xchip=pentium        ;;
3022                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3023                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3024                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3025                     pentium4*)          echo -xtarget=pentium4           ;;
3026                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3027                     *-sse3)             echo -xarch=sse3                 ;;
3028                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3029                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3030                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3031                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3032                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3033                     k8|opteron|athlon64|athlon-fx)
3034                                                echo -xarch=sse2a         ;;
3035                     athlon*)                   echo -xarch=pentium_proa  ;;
3036                 esac
3037                 ;;
3038             -std=c99)             echo -xc99              ;;
3039             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3040             -fPIC)                echo -KPIC -xcode=pic32 ;;
3041             -W*,*)                echo $flag              ;;
3042             -f*-*|-W*|-mimpure-text)                      ;;
3043             -shared)              echo -G                 ;;
3044             *)                    echo $flag              ;;
3045         esac
3046     done
3047 }
3048
3049 tms470_flags(){
3050     for flag; do
3051         case $flag in
3052             -march=*|-mcpu=*)
3053                 case "${flag#*=}" in
3054                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3055                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3056                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3057                     armv6*|arm11*)          echo -mv=6   ;;
3058                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3059                                             echo -mv=5e  ;;
3060                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3061                 esac
3062                 ;;
3063             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3064             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3065             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3066             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3067             -msoft-float)   echo --float_support=vfplib       ;;
3068             -O[0-3]|-mf=*)  echo $flag                        ;;
3069             -g)             echo -g -mn                       ;;
3070             -pds=*)         echo $flag                        ;;
3071             -D*|-I*)        echo $flag                        ;;
3072             --gcc|--abi=*)  echo $flag                        ;;
3073             -me)            echo $flag                        ;;
3074         esac
3075     done
3076 }
3077
3078 probe_cc(){
3079     pfx=$1
3080     _cc=$2
3081
3082     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3083     unset _ld_o _ldflags _ld_lib _ld_path
3084     unset _depflags _DEPCMD _DEPFLAGS
3085     _flags_filter=echo
3086
3087     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3088         _type=llvm_gcc
3089         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3090         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3091         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3092         _cflags_speed='-O3'
3093         _cflags_size='-Os'
3094     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3095         _type=gcc
3096         gcc_version=$($_cc --version | head -n1)
3097         gcc_basever=$($_cc -dumpversion)
3098         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3099         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3100         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3101         if ! $_cc -dumpversion | grep -q '^2\.'; then
3102             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3103         fi
3104         _cflags_speed='-O3'
3105         _cflags_size='-Os'
3106     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3107         _type=icc
3108         _ident=$($_cc --version | head -n1)
3109         _depflags='-MMD'
3110         _cflags_speed='-O3'
3111         _cflags_size='-Os'
3112         _cflags_noopt='-O1'
3113     elif $_cc -v 2>&1 | grep -q xlc; then
3114         _type=xlc
3115         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3116         _cflags_speed='-O5'
3117         _cflags_size='-O5 -qcompact'
3118     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3119         _type=ccc
3120         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3121         _DEPFLAGS='-M'
3122         _cflags_speed='-fast'
3123         _cflags_size='-O1'
3124         _flags_filter=ccc_flags
3125     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3126         test -d "$sysroot" || die "No valid sysroot specified."
3127         _type=armcc
3128         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3129         armcc_conf="$PWD/armcc.conf"
3130         $_cc --arm_linux_configure                 \
3131              --arm_linux_config_file="$armcc_conf" \
3132              --configure_sysroot="$sysroot"        \
3133              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3134              die "Error creating armcc configuration file."
3135         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3136         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3137         as_default="${cross_prefix}gcc"
3138         _depflags='-MMD'
3139         _cflags_speed='-O3'
3140         _cflags_size='-Os'
3141     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3142         _type=tms470
3143         _ident=$($_cc -version | head -n1 | tr -s ' ')
3144         _flags='--gcc --abi=eabi -me'
3145         _cc_e='-ppl -fe=$@'
3146         _cc_o='-fe=$@'
3147         _depflags='-ppa -ppd=$(@:.o=.d)'
3148         _cflags_speed='-O3 -mf=5'
3149         _cflags_size='-O3 -mf=2'
3150         _flags_filter=tms470_flags
3151     elif $_cc -v 2>&1 | grep -q clang; then
3152         _type=clang
3153         _ident=$($_cc --version 2>/dev/null | head -n1)
3154         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3155         _cflags_speed='-O3'
3156         _cflags_size='-Os'
3157     elif $_cc -V 2>&1 | grep -q Sun; then
3158         _type=suncc
3159         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3160         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3161         _DEPFLAGS='-xM1 -xc99'
3162         _ldflags='-std=c99'
3163         _cflags_speed='-O5'
3164         _cflags_size='-O5 -xspace'
3165         _flags_filter=suncc_flags
3166     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3167         _type=pathscale
3168         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3169         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3170         _cflags_speed='-O2'
3171         _cflags_size='-Os'
3172         _flags_filter='filter_out -Wdisabled-optimization'
3173     elif $_cc -v 2>&1 | grep -q Open64; then
3174         _type=open64
3175         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3176         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3177         _cflags_speed='-O2'
3178         _cflags_size='-Os'
3179         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3180     elif $_cc -V 2>&1 | grep -q Portland; then
3181         _type=pgi
3182         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3183         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3184         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3185         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3186         _cflags_noopt="-O1"
3187         _flags_filter=pgi_flags
3188     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3189         _type=armasm
3190         _ident=$($_cc | head -n1)
3191         # 4509: "This form of conditional instruction is deprecated"
3192         _flags="-nologo -ignore 4509"
3193         _flags_filter=armasm_flags
3194     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3195         _type=msvc
3196         _ident=$($_cc 2>&1 | head -n1)
3197         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3198         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3199         _cflags_speed="-O2"
3200         _cflags_size="-O1"
3201         if $_cc -nologo- 2>&1 | grep -q Linker; then
3202             _ld_o='-out:$@'
3203         else
3204             _ld_o='-Fe$@'
3205         fi
3206         _cc_o='-Fo$@'
3207         _cc_e='-P -Fi$@'
3208         _flags_filter=msvc_flags
3209         _ld_lib='lib%.a'
3210         _ld_path='-libpath:'
3211         _flags='-nologo'
3212         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3213     elif $_cc 2>&1 | grep -q Intel; then
3214         _type=icl
3215         _ident=$($_cc 2>&1 | head -n1)
3216         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3217         # Not only is O3 broken on 13.x+ but it is slower on all previous
3218         # versions (tested) as well.
3219         _cflags_speed="-O2"
3220         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3221         if $_cc 2>&1 | grep -q Linker; then
3222             _ld_o='-out:$@'
3223         else
3224             _ld_o='-Fe$@'
3225         fi
3226         _cc_o='-Fo$@'
3227         _cc_e='-P'
3228         _flags_filter=icl_flags
3229         _ld_lib='lib%.a'
3230         _ld_path='-libpath:'
3231         # -Qdiag-error to make icl error when seeing certain unknown arguments
3232         _flags='-nologo -Qdiag-error:4044,10157'
3233         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3234         # with MSVC which enables it by default.
3235         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3236     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3237         _type=cparser
3238         _ident=$($_cc --version | head -n1)
3239         _depflags='-MMD'
3240         _cflags_speed='-O4'
3241         _cflags_size='-O2'
3242         _flags_filter=cparser_flags
3243     fi
3244
3245     eval ${pfx}_type=\$_type
3246     eval ${pfx}_ident=\$_ident
3247 }
3248
3249 set_ccvars(){
3250     eval ${1}_C=\${_cc_c-\${${1}_C}}
3251     eval ${1}_E=\${_cc_e-\${${1}_E}}
3252     eval ${1}_O=\${_cc_o-\${${1}_O}}
3253
3254     if [ -n "$_depflags" ]; then
3255         eval ${1}_DEPFLAGS=\$_depflags
3256     else
3257         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3258         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3259         eval DEP${1}FLAGS=\$_flags
3260     fi
3261 }
3262
3263 probe_cc cc "$cc"
3264 cflags_filter=$_flags_filter
3265 cflags_speed=$_cflags_speed
3266 cflags_size=$_cflags_size
3267 cflags_noopt=$_cflags_noopt
3268 add_cflags $_flags $_cflags
3269 cc_ldflags=$_ldflags
3270 set_ccvars CC
3271
3272 probe_cc hostcc "$host_cc"
3273 host_cflags_filter=$_flags_filter
3274 add_host_cflags  $_flags $_cflags
3275 set_ccvars HOSTCC
3276
3277 test -n "$cc_type" && enable $cc_type ||
3278     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3279
3280 : ${as_default:=$cc}
3281 : ${objcc_default:=$cc}
3282 : ${dep_cc_default:=$cc}
3283 : ${ld_default:=$cc}
3284 : ${host_ld_default:=$host_cc}
3285 set_default ar as objcc dep_cc ld host_ld
3286
3287 probe_cc as "$as"
3288 asflags_filter=$_flags_filter
3289 add_asflags $_flags $_cflags
3290 set_ccvars AS
3291
3292 probe_cc objcc "$objcc"
3293 objcflags_filter=$_flags_filter
3294 add_objcflags $_flags $_cflags
3295 set_ccvars OBJC
3296
3297 probe_cc ld "$ld"
3298 ldflags_filter=$_flags_filter
3299 add_ldflags $_flags $_ldflags
3300 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3301 LD_O=${_ld_o-$LD_O}
3302 LD_LIB=${_ld_lib-$LD_LIB}
3303 LD_PATH=${_ld_path-$LD_PATH}
3304
3305 probe_cc hostld "$host_ld"
3306 host_ldflags_filter=$_flags_filter
3307 add_host_ldflags $_flags $_ldflags
3308 HOSTLD_O=${_ld_o-$HOSTLD_O}
3309
3310 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3311     probe_cc depcc "$dep_cc"
3312     CCDEP=${_DEPCMD:-$DEPCMD}
3313     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3314     DEPCCFLAGS=$_flags
3315 fi
3316
3317 if $ar 2>&1 | grep -q Microsoft; then
3318     arflags="-nologo"
3319     ar_o='-out:$@'
3320 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3321     arflags="rq"
3322     ar_o='$@'
3323 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3324     arflags='-Xany -r -c'
3325     ar_o='$@'
3326 else
3327     arflags="rc"
3328     ar_o='$@'
3329 fi
3330
3331 add_cflags $extra_cflags
3332 add_objcflags $extra_objcflags
3333 add_asflags $extra_cflags
3334
3335 if test -n "$sysroot"; then
3336     case "$cc_type" in
3337         gcc|llvm_gcc|clang)
3338             add_cppflags --sysroot="$sysroot"
3339             add_ldflags --sysroot="$sysroot"
3340         ;;
3341         tms470)
3342             add_cppflags -I"$sysinclude"
3343             add_ldflags  --sysroot="$sysroot"
3344         ;;
3345     esac
3346 fi
3347
3348 if test "$cpu" = host; then
3349     enabled cross_compile &&
3350         die "--cpu=host makes no sense when cross-compiling."
3351
3352     case "$cc_type" in
3353         gcc|llvm_gcc)
3354             check_native(){
3355                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3356                 sed -n "/cc1.*$1=/{
3357                             s/.*$1=\\([^ ]*\\).*/\\1/
3358                             p
3359                             q
3360                         }" $TMPE
3361             }
3362             cpu=$(check_native -march || check_native -mcpu)
3363         ;;
3364     esac
3365
3366     test "${cpu:-host}" = host &&
3367         die "--cpu=host not supported with compiler $cc"
3368 fi
3369
3370 # Deal with common $arch aliases
3371 case "$arch" in
3372     aarch64|arm64)
3373         arch="aarch64"
3374     ;;
3375     arm*)
3376         arch="arm"
3377     ;;
3378     mips*|IP*)
3379         case "$arch" in
3380         *el)
3381             add_cppflags -EL
3382             add_ldflags -EL
3383         ;;
3384         *eb)
3385             add_cppflags -EB
3386             add_ldflags -EB
3387         ;;
3388         esac
3389         arch="mips"
3390     ;;
3391     parisc*|hppa*)
3392         arch="parisc"
3393     ;;
3394     "Power Macintosh"|ppc*|powerpc*)
3395         arch="ppc"
3396     ;;
3397     s390|s390x)
3398         arch="s390"
3399     ;;
3400     sh4|sh)
3401         arch="sh4"
3402     ;;
3403     sun4u|sparc*)
3404         arch="sparc"
3405     ;;
3406     tilegx|tile-gx)
3407         arch="tilegx"
3408     ;;
3409     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3410         arch="x86"
3411     ;;
3412 esac
3413
3414 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3415 enable $arch
3416
3417 # Add processor-specific flags
3418 if enabled aarch64; then
3419
3420     case $cpu in
3421         armv*)
3422             cpuflags="-march=$cpu"
3423         ;;
3424         *)
3425             cpuflags="-mcpu=$cpu"
3426         ;;
3427     esac
3428
3429 elif enabled alpha; then
3430
3431     cpuflags="-mcpu=$cpu"
3432
3433 elif enabled arm; then
3434
3435     check_arm_arch() {
3436         check_cpp_condition stddef.h \
3437             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3438             $cpuflags
3439     }
3440
3441     probe_arm_arch() {
3442         if   check_arm_arch 4;        then echo armv4;
3443         elif check_arm_arch 4T;       then echo armv4t;
3444         elif check_arm_arch 5;        then echo armv5;
3445         elif check_arm_arch 5E;       then echo armv5e;
3446         elif check_arm_arch 5T;       then echo armv5t;
3447         elif check_arm_arch 5TE;      then echo armv5te;
3448         elif check_arm_arch 5TEJ;     then echo armv5te;
3449         elif check_arm_arch 6;        then echo armv6;
3450         elif check_arm_arch 6J;       then echo armv6j;
3451         elif check_arm_arch 6K;       then echo armv6k;
3452         elif check_arm_arch 6Z;       then echo armv6z;
3453         elif check_arm_arch 6ZK;      then echo armv6zk;
3454         elif check_arm_arch 6T2;      then echo armv6t2;
3455         elif check_arm_arch 7;        then echo armv7;
3456         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3457         elif check_arm_arch 7S;       then echo armv7-a;
3458         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3459         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3460         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3461         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3462         fi
3463     }
3464
3465     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3466
3467     case $cpu in
3468         armv*)
3469             cpuflags="-march=$cpu"
3470             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3471         ;;
3472         *)
3473             cpuflags="-mcpu=$cpu"
3474             case $cpu in
3475                 cortex-a*)                               subarch=armv7a  ;;
3476                 cortex-r*)                               subarch=armv7r  ;;
3477                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3478                 arm11*)                                  subarch=armv6   ;;
3479                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3480                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3481                 *)                             subarch=$(probe_arm_arch) ;;
3482             esac
3483         ;;
3484     esac
3485
3486     case "$subarch" in
3487         armv5t*)    enable fast_clz                ;;
3488         armv[6-8]*) enable fast_clz fast_unaligned ;;
3489     esac
3490
3491 elif enabled avr32; then
3492
3493     case $cpu in
3494         ap7[02]0[0-2])
3495             subarch="avr32_ap"
3496             cpuflags="-mpart=$cpu"
3497         ;;
3498         ap)
3499             subarch="avr32_ap"
3500             cpuflags="-march=$cpu"
3501         ;;
3502         uc3[ab]*)
3503             subarch="avr32_uc"
3504             cpuflags="-mcpu=$cpu"
3505         ;;
3506         uc)
3507             subarch="avr32_uc"
3508             cpuflags="-march=$cpu"
3509         ;;
3510     esac
3511
3512 elif enabled bfin; then
3513
3514     cpuflags="-mcpu=$cpu"
3515
3516 elif enabled mips; then
3517
3518     cpuflags="-march=$cpu"
3519
3520 elif enabled ppc; then
3521
3522     disable ldbrx
3523
3524     case $(tolower $cpu) in
3525         601|ppc601|powerpc601)
3526             cpuflags="-mcpu=601"
3527             disable altivec
3528         ;;
3529         603*|ppc603*|powerpc603*)
3530             cpuflags="-mcpu=603"
3531             disable altivec
3532         ;;
3533         604*|ppc604*|powerpc604*)
3534             cpuflags="-mcpu=604"
3535             disable altivec
3536         ;;
3537         g3|75*|ppc75*|powerpc75*)
3538             cpuflags="-mcpu=750"
3539             disable altivec
3540         ;;
3541         g4|745*|ppc745*|powerpc745*)
3542             cpuflags="-mcpu=7450"
3543             disable vsx
3544         ;;
3545         74*|ppc74*|powerpc74*)
3546             cpuflags="-mcpu=7400"
3547             disable vsx
3548         ;;
3549         g5|970|ppc970|powerpc970)
3550             cpuflags="-mcpu=970"
3551             disable vsx
3552         ;;
3553         power[3-6]*)
3554             cpuflags="-mcpu=$cpu"
3555             disable vsx
3556         ;;
3557         power[7-8]*)
3558             cpuflags="-mcpu=$cpu"
3559             enable ldbrx
3560         ;;
3561         cell)
3562             cpuflags="-mcpu=cell"
3563             enable ldbrx
3564             disable vsx
3565         ;;
3566         e500mc)
3567             cpuflags="-mcpu=e500mc"
3568             disable altivec
3569         ;;
3570         e500v2)
3571             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3572             disable altivec
3573             disable dcbzl
3574         ;;
3575         e500)
3576             cpuflags="-mcpu=8540 -mhard-float"
3577             disable altivec
3578             disable dcbzl
3579         ;;
3580     esac
3581
3582 elif enabled sparc; then
3583
3584     case $cpu in
3585         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3586             cpuflags="-mcpu=$cpu"
3587         ;;
3588         ultrasparc*|niagara[234])
3589             cpuflags="-mcpu=$cpu"
3590         ;;
3591     esac
3592
3593 elif enabled x86; then
3594
3595     case $cpu in
3596         i[345]86|pentium)
3597             cpuflags="-march=$cpu"
3598             disable i686
3599             disable mmx
3600         ;;
3601         # targets that do NOT support nopl and conditional mov (cmov)
3602         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3603             cpuflags="-march=$cpu"
3604             disable i686
3605         ;;
3606         # targets that do support nopl and conditional mov (cmov)
3607         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3608             cpuflags="-march=$cpu"
3609             enable i686
3610             enable fast_cmov
3611         ;;
3612         # targets that do support conditional mov but on which it's slow
3613         pentium4|pentium4m|prescott|nocona)
3614             cpuflags="-march=$cpu"
3615             enable i686
3616             disable fast_cmov
3617         ;;
3618     esac
3619
3620 fi
3621
3622 if [ "$cpu" != generic ]; then
3623     add_cflags  $cpuflags
3624     add_asflags $cpuflags
3625     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3626 fi
3627
3628 # compiler sanity check
3629 check_exec <<EOF
3630 int main(void){ return 0; }
3631 EOF
3632 if test "$?" != 0; then
3633     echo "$cc is unable to create an executable file."
3634     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3635         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3636         echo "Only do this if you know what cross compiling means."
3637     fi
3638     die "C compiler test failed."
3639 fi
3640
3641 add_cppflags -D_ISOC99_SOURCE
3642 check_cflags -std=c99
3643 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3644 #include <stdlib.h>
3645 EOF
3646 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3647 #include <stdlib.h>
3648 EOF
3649
3650 add_host_cppflags -D_ISOC99_SOURCE
3651 check_host_cflags -std=c99
3652 check_host_cflags -Wall
3653 check_host_cflags -O3
3654
3655 check_64bit(){
3656     arch32=$1
3657     arch64=$2
3658     expr=$3
3659     check_code cc "" "int test[2*($expr) - 1]" &&
3660         subarch=$arch64 || subarch=$arch32
3661 }
3662
3663 case "$arch" in
3664     aarch64|alpha|ia64)
3665         spic=$shared
3666     ;;
3667     mips)
3668         check_64bit mips mips64 '_MIPS_SIM > 1'
3669         spic=$shared
3670     ;;
3671     parisc)
3672         check_64bit parisc parisc64 'sizeof(void *) > 4'
3673         spic=$shared
3674     ;;
3675     ppc)
3676         check_64bit ppc ppc64 'sizeof(void *) > 4'
3677         spic=$shared
3678     ;;
3679     s390)
3680         check_64bit s390 s390x 'sizeof(void *) > 4'
3681         spic=$shared
3682     ;;
3683     sparc)
3684         check_64bit sparc sparc64 'sizeof(void *) > 4'
3685         spic=$shared
3686     ;;
3687     x86)
3688         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3689         if test "$subarch" = "x86_64"; then
3690             spic=$shared
3691         fi
3692     ;;
3693 esac
3694
3695 enable $subarch
3696 enabled spic && enable_weak pic
3697
3698 # OS specific
3699 case $target_os in
3700     aix)
3701         SHFLAGS=-shared
3702         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3703         enabled shared && add_ldflags -Wl,-brtl
3704         ;;
3705     android)
3706         disable symver
3707         enable section_data_rel_ro
3708         SLIB_INSTALL_NAME='$(SLIBNAME)'
3709         SLIB_INSTALL_LINKS=
3710         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3711         ;;
3712     haiku)
3713         prefix_default="/boot/common"
3714         network_extralibs="-lnetwork"
3715         host_libs=
3716         ;;
3717     sunos)
3718         SHFLAGS='-shared -Wl,-h,$$(@F)'
3719         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3720         network_extralibs="-lsocket -lnsl"
3721         # When using suncc to build, the Solaris linker will mark
3722         # an executable with each instruction set encountered by
3723         # the Solaris assembler.  As our libraries contain their own
3724         # guards for processor-specific code, instead suppress
3725         # generation of the HWCAPS ELF section on Solaris x86 only.
3726         enabled_all suncc x86 &&
3727             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3728             add_ldflags -Wl,-M,mapfile
3729         nm_default='nm -P -g'
3730         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
3731         ;;
3732     netbsd)
3733         disable symver
3734         oss_indev_extralibs="-lossaudio"
3735         oss_outdev_extralibs="-lossaudio"
3736         ;;
3737     openbsd|bitrig)
3738         disable symver
3739         SHFLAGS='-shared'
3740         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3741         SLIB_INSTALL_LINKS=
3742         oss_indev_extralibs="-lossaudio"
3743         oss_outdev_extralibs="-lossaudio"
3744         ;;
3745     dragonfly)
3746         disable symver
3747         ;;
3748     freebsd)
3749         ;;
3750     bsd/os)
3751         add_extralibs -lpoll -lgnugetopt
3752         ;;
3753     darwin)
3754         enabled ppc && add_asflags -force_cpusubtype_ALL
3755         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3756         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3757         add_ldflags -Wl,-dynamic,-search_paths_first
3758         SLIBSUF=".dylib"
3759         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3760         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3761         objformat="macho"
3762         enabled x86_64 && objformat="macho64"
3763         enabled_any pic shared ||
3764             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3765         ;;
3766     msys*)
3767         die "Native MSYS builds are discouraged, please use the MINGW environment.";
3768         ;;
3769     mingw32*|mingw64*)
3770         if test $target_os = "mingw32ce"; then
3771             disable network
3772         else
3773             target_os=mingw32
3774         fi
3775         LIBTARGET=i386
3776         if enabled x86_64; then
3777             LIBTARGET="i386:x86-64"
3778         elif enabled arm; then
3779             LIBTARGET=arm-wince
3780         fi
3781         check_ldflags -Wl,--nxcompat
3782         check_ldflags -Wl,--dynamicbase
3783         shlibdir_default="$bindir_default"
3784         SLIBPREF=""
3785         SLIBSUF=".dll"
3786         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3787         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3788         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3789         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3790         SLIB_INSTALL_LINKS=
3791         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3792         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3793         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3794         objformat="win32"
3795         dlltool="${cross_prefix}dlltool"
3796         ranlib=:
3797         enable dos_paths
3798         ;;
3799     win32|win64)
3800         disable symver
3801         if enabled shared; then
3802             # Link to the import library instead of the normal static library
3803             # for shared libs.
3804             LD_LIB='%.lib'
3805             # Cannot build both shared and static libs with MSVC or icl.
3806             disable static
3807         fi
3808         shlibdir_default="$bindir_default"
3809         SLIBPREF=""
3810         SLIBSUF=".dll"
3811         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3812         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3813         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3814         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3815         SLIB_INSTALL_LINKS=
3816         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3817         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3818         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3819         objformat="win32"
3820         ranlib=:
3821         enable dos_paths
3822         ;;
3823     cygwin*)
3824         target_os=cygwin
3825         shlibdir_default="$bindir_default"
3826         SLIBPREF="cyg"
3827         SLIBSUF=".dll"
3828         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3829         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3830         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3831         SLIB_INSTALL_LINKS=
3832         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3833         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3834         objformat="win32"
3835         enable dos_paths
3836         ;;
3837     *-dos|freedos|opendos)
3838         network_extralibs="-lsocket"
3839         objformat="coff"
3840         enable dos_paths
3841         add_cppflags -U__STRICT_ANSI__
3842         ;;
3843     linux)
3844         enable dv1394
3845         enable section_data_rel_ro
3846         ;;
3847     irix*)
3848         target_os=irix
3849         ranlib="echo ignoring ranlib"
3850         ;;
3851     os/2*)
3852         ln_s="cp -f"
3853         objformat="aout"
3854         add_cppflags -D_GNU_SOURCE
3855         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3856         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3857         LIBSUF="_s.a"
3858         SLIBPREF=""
3859         SLIBSUF=".dll"
3860         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3861         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3862         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3863             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3864             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3865             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3866             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3867         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3868             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3869         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3870         enable dos_paths
3871         ;;
3872     gnu/kfreebsd)
3873         add_cppflags -D_BSD_SOURCE
3874         ;;
3875     gnu)
3876         ;;
3877     qnx)
3878         add_cppflags -D_QNX_SOURCE
3879         network_extralibs="-lsocket"
3880         ;;
3881     symbian)
3882         SLIBSUF=".dll"
3883         enable dos_paths
3884         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3885         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3886         add_ldflags -Wl,--target1-abs,--no-undefined \
3887                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3888                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3889         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3890                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3891                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3892         ;;
3893     osf1)
3894         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3895         ;;
3896     minix)
3897         ;;
3898     plan9)
3899         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3900                      -D_REENTRANT_SOURCE        \
3901                      -D_RESEARCH_SOURCE         \
3902                      -DFD_SETSIZE=96            \
3903                      -DHAVE_SOCK_OPTS
3904         add_compat strtod.o strtod=avpriv_strtod
3905         network_extralibs='-lbsd'
3906         exeobjs=compat/plan9/main.o
3907         cp_f='cp'
3908         ;;
3909     none)
3910         ;;
3911     *)
3912         die "Unknown OS '$target_os'."
3913         ;;
3914 esac
3915
3916 # determine libc flavour
3917
3918 probe_libc(){
3919     pfx=$1
3920     pfx_no_=${pfx%_}
3921     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3922     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3923         eval ${pfx}libc_type=uclibc
3924         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3925     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3926         eval ${pfx}libc_type=glibc
3927         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3928     # MinGW headers can be installed on Cygwin, so check for newlib first.
3929     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3930         eval ${pfx}libc_type=newlib
3931         add_${pfx}cppflags -U__STRICT_ANSI__
3932     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3933     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3934         eval ${pfx}libc_type=mingw64
3935         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3936         eval test \$${pfx_no_}cc_type = "gcc" &&
3937             add_${pfx}cppflags -D__printf__=__gnu_printf__
3938     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3939          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3940         eval ${pfx}libc_type=mingw32
3941         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3942             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3943             die "ERROR: MinGW32 runtime version must be >= 3.15."
3944         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3945         eval test \$${pfx_no_}cc_type = "gcc" &&
3946             add_${pfx}cppflags -D__printf__=__gnu_printf__
3947     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3948         eval ${pfx}libc_type=msvcrt
3949         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3950             if [ "$pfx" = host_ ]; then
3951                 add_host_cppflags -Dsnprintf=_snprintf
3952             else
3953                 add_compat strtod.o strtod=avpriv_strtod
3954                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3955                                              _snprintf=avpriv_snprintf  \
3956                                              vsnprintf=avpriv_vsnprintf
3957             fi
3958         fi
3959         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3960         # 0x601 by default unless something else is set by the user.
3961         # This can easily lead to us detecting functions only present
3962         # in such new versions and producing binaries requiring windows 7.0.
3963         # Therefore explicitly set the default to XP unless the user has
3964         # set something else on the command line.
3965         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3966         # family. For these cases, configure is free to use any functions
3967         # found in the SDK headers by default. (Alternatively, we could force
3968         # _WIN32_WINNT to 0x0602 in that case.)
3969         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3970             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3971 #ifdef WINAPI_FAMILY
3972 #include <winapifamily.h>
3973 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3974 #error not desktop
3975 #endif
3976 #endif
3977 EOF
3978     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3979         eval ${pfx}libc_type=klibc
3980     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3981         eval ${pfx}libc_type=bionic
3982     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3983         eval ${pfx}libc_type=solaris
3984         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3985     else
3986         eval ${pfx}libc_type=default
3987         add_${pfx}cppflags -D_DEFAULT_SOURCE
3988     fi
3989 }
3990
3991 probe_libc
3992 test -n "$libc_type" && enable libc_$libc_type
3993 probe_libc host_
3994 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3995
3996 case $libc_type in
3997     bionic)
3998         add_compat strtod.o strtod=avpriv_strtod
3999         ;;
4000 esac
4001
4002 # hacks for compiler/libc/os combinations
4003
4004 if enabled_all tms470 libc_glibc; then
4005     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4006     add_cppflags -D__USER_LABEL_PREFIX__=
4007     add_cppflags -D__builtin_memset=memset
4008     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4009     add_cflags   -pds=48    # incompatible redefinition of macro
4010 fi
4011
4012 if enabled_all ccc libc_glibc; then
4013     add_ldflags -Wl,-z,now  # calls to libots crash without this
4014 fi
4015
4016 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4017     add_cppflags '-I\$(SRC_PATH)/compat/float'
4018
4019 esc(){
4020     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4021 }
4022
4023 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4024
4025 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4026
4027 set_default $PATHS_LIST
4028 set_default nm
4029
4030 # we need to build at least one lib type
4031 if ! enabled_any static shared; then
4032     cat <<EOF
4033 At least one library type must be built.
4034 Specify --enable-static to build the static libraries or --enable-shared to
4035 build the shared libraries as well. To only build the shared libraries specify
4036 --disable-static in addition to --enable-shared.
4037 EOF
4038     exit 1;
4039 fi
4040
4041 die_license_disabled() {
4042     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4043 }
4044
4045 die_license_disabled gpl libcdio
4046 die_license_disabled gpl libx264
4047 die_license_disabled gpl libx265
4048 die_license_disabled gpl libxavs
4049 die_license_disabled gpl libxvid
4050 die_license_disabled gpl x11grab
4051
4052 die_license_disabled nonfree cuda
4053 die_license_disabled nonfree libfaac
4054 die_license_disabled nonfree libfdk_aac
4055 die_license_disabled nonfree nvenc
4056 die_license_disabled nonfree openssl
4057
4058 die_license_disabled version3 libopencore_amrnb
4059 die_license_disabled version3 libopencore_amrwb
4060 die_license_disabled version3 libvo_aacenc
4061 die_license_disabled version3 libvo_amrwbenc
4062
4063 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4064
4065 disabled optimizations || check_cflags -fomit-frame-pointer
4066
4067 enable_weak_pic() {
4068     disabled pic && return
4069     enable pic
4070     add_cppflags -DPIC
4071     case "$target_os" in
4072     mingw*|cygwin*)
4073         ;;
4074     *)
4075         add_cflags -fPIC
4076         ;;
4077     esac
4078     add_asflags  -fPIC
4079 }
4080
4081 enabled pic && enable_weak_pic
4082
4083 check_cc <<EOF || die "Symbol mangling check failed."
4084 int ff_extern;
4085 EOF
4086 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4087 extern_prefix=${sym%%ff_extern*}
4088
4089 check_cc <<EOF && enable_weak inline_asm
4090 void foo(void) { __asm__ volatile ("" ::); }
4091 EOF
4092
4093 _restrict=
4094 for restrict_keyword in restrict __restrict__ __restrict; do
4095     check_cc <<EOF && _restrict=$restrict_keyword && break
4096 void foo(char * $restrict_keyword p);
4097 EOF
4098 done
4099
4100 check_cc <<EOF && enable pragma_deprecated
4101 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4102 EOF
4103
4104 check_cc <<EOF && enable attribute_packed
4105 struct { int x; } __attribute__((packed)) x;
4106 EOF
4107
4108 check_cc <<EOF && enable attribute_may_alias
4109 union { int x; } __attribute__((may_alias)) x;
4110 EOF
4111
4112 check_cc <<EOF || die "endian test failed"
4113 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4114 EOF
4115 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4116
4117 check_gas() {
4118     log "check_gas using '$as' as AS"
4119     # :vararg is used on aarch64, arm and ppc altivec
4120     check_as <<EOF || return 1
4121 .macro m n, y:vararg=0
4122 \n: .int \y
4123 .endm
4124 m x
4125 EOF
4126     # .altmacro is only used in arm asm
4127     ! enabled arm || check_as <<EOF || return 1
4128 .altmacro
4129 EOF
4130     enable gnu_as
4131     return 0
4132 }
4133
4134 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4135     nogas=:
4136     enabled_any arm aarch64 && nogas=die
4137     enabled_all ppc altivec && nogas=warn
4138     as_noop=-v
4139
4140     case $as_type in
4141         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4142         gcc)  gaspp_as_type=gas ;;
4143         *)    gaspp_as_type=$as_type ;;
4144     esac
4145
4146     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4147
4148     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4149         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4150
4151     if ! check_gas ; then
4152         as=${gas:=$as}
4153         check_gas || \
4154             $nogas "GNU assembler not found, install/update gas-preprocessor"
4155     fi
4156
4157     check_as <<EOF && enable as_func
4158 .func test
4159 .endfunc
4160 EOF
4161 fi
4162
4163 check_inline_asm inline_asm_labels '"1:\n"'
4164
4165 if enabled aarch64; then
4166     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4167     # internal assembler in clang 3.3 does not support this instruction
4168     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4169     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4170
4171     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4172
4173 elif enabled alpha; then
4174
4175     check_cflags -mieee
4176
4177 elif enabled arm; then
4178
4179     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4180     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4181     enabled thumb && check_cflags -mthumb || check_cflags -marm
4182
4183     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4184         enable vfp_args
4185     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4186         enable vfp_args
4187     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4188         case "${cross_prefix:-$cc}" in
4189             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4190             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4191 __asm__ (".eabi_attribute 28, 1");
4192 int main(void) { return 0; }
4193 EOF
4194         esac
4195         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4196     fi
4197
4198     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4199     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4200     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4201     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4202     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4203     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4204
4205     [ $target_os = linux ] || [ $target_os = android ] ||
4206         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4207             $ARCH_EXT_LIST_ARM
4208
4209     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4210
4211     check_as <<EOF && enable as_dn_directive
4212 ra .dn d0.i16
4213 .unreq ra
4214 EOF
4215
4216     # llvm's integrated assembler supports .object_arch from llvm 3.5
4217     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4218 .object_arch armv4
4219 EOF
4220
4221     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4222
4223 elif enabled mips; then
4224
4225     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4226
4227     # make sure that only an instruction set is enabled
4228     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4229
4230     if enabled mips64; then
4231         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4232             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4233                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4234     else
4235         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4236             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4237                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4238     fi
4239
4240 elif enabled parisc; then
4241
4242     if enabled gcc; then
4243         case $($cc -dumpversion) in
4244             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4245         esac
4246     fi
4247
4248 elif enabled ppc; then
4249
4250     enable local_aligned_8 local_aligned_16
4251
4252     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4253     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4254     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4255     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4256
4257     # AltiVec flags: The FSF version of GCC differs from the Apple version
4258     if enabled altivec; then
4259         check_cflags -maltivec -mabi=altivec &&
4260         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4261         check_cflags -faltivec
4262
4263         # check if our compiler supports Motorola AltiVec C API
4264         check_cc <<EOF || disable altivec
4265 $inc_altivec_h
4266 int main(void) {
4267     vector signed int v1 = (vector signed int) { 0 };
4268     vector signed int v2 = (vector signed int) { 1 };
4269     v1 = vec_add(v1, v2);
4270     return 0;
4271 }
4272 EOF
4273
4274         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4275     fi
4276
4277     if enabled vsx; then
4278         check_cflags -mvsx &&
4279         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4280     fi
4281
4282     if enabled power8; then
4283         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4284     fi
4285
4286 elif enabled x86; then
4287
4288     check_builtin rdtsc    intrin.h   "__rdtsc()"
4289     check_builtin mm_empty mmintrin.h "_mm_empty()"
4290
4291     enable local_aligned_8 local_aligned_16
4292
4293     # check whether EBP is available on x86
4294     # As 'i' is stored on the stack, this program will crash
4295     # if the base pointer is used to access it because the
4296     # base pointer is cleared in the inline assembly code.
4297     check_exec_crash <<EOF && enable ebp_available
4298 volatile int i=0;
4299 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4300 return i;
4301 EOF
4302
4303     # check whether EBX is available on x86
4304     check_inline_asm ebx_available '""::"b"(0)' &&
4305         check_inline_asm ebx_available '"":::"%ebx"'
4306
4307     # check whether xmm clobbers are supported
4308     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4309
4310     # check whether binutils is new enough to compile SSSE3/MMXEXT
4311     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4312     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4313
4314     if ! disabled_any asm mmx yasm; then
4315         if check_cmd $yasmexe --version; then
4316             enabled x86_64 && yasm_extra="-m amd64"
4317             yasm_debug="-g dwarf2"
4318         elif check_cmd nasm -v; then
4319             yasmexe=nasm
4320             yasm_debug="-g -F dwarf"
4321             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4322         fi
4323
4324         YASMFLAGS="-f $objformat $yasm_extra"
4325         enabled pic               && append YASMFLAGS "-DPIC"
4326         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4327         case "$objformat" in
4328             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4329         esac
4330
4331         check_yasm "movbe ecx, [5]" && enable yasm ||
4332             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4333         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4334         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4335         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4336         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4337         check_yasm "CPU amdnop" || disable cpunop
4338     fi
4339
4340     case "$cpu" in
4341         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4342             disable fast_clz
4343         ;;
4344     esac
4345
4346 fi
4347
4348 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4349
4350 check_ldflags -Wl,--as-needed
4351
4352 if check_func dlopen; then
4353     ldl=
4354 elif check_func dlopen -ldl; then
4355     ldl=-ldl
4356 fi
4357
4358 if ! disabled network; then
4359     check_func getaddrinfo $network_extralibs
4360     check_func inet_aton $network_extralibs
4361
4362     check_type netdb.h "struct addrinfo"
4363     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4364     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4365     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4366     check_type poll.h "struct pollfd"
4367     check_type netinet/sctp.h "struct sctp_event_subscribe"
4368     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4369     check_type netinet/in.h "struct sockaddr_in6"
4370     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4371     check_type "sys/types.h sys/socket.h" socklen_t
4372
4373     # Prefer arpa/inet.h over winsock2
4374     if check_header arpa/inet.h ; then
4375         check_func closesocket
4376     elif check_header winsock2.h ; then
4377         check_func_headers winsock2.h closesocket -lws2 &&
4378             network_extralibs="-lws2" ||
4379         { check_func_headers winsock2.h closesocket -lws2_32 &&
4380             network_extralibs="-lws2_32"; } || disable winsock2_h network
4381         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4382
4383         check_type ws2tcpip.h socklen_t
4384         check_type ws2tcpip.h "struct addrinfo"
4385         check_type ws2tcpip.h "struct group_source_req"
4386         check_type ws2tcpip.h "struct ip_mreq_source"
4387         check_type ws2tcpip.h "struct ipv6_mreq"
4388         check_type winsock2.h "struct pollfd"
4389         check_struct winsock2.h "struct sockaddr" sa_len
4390         check_type ws2tcpip.h "struct sockaddr_in6"
4391         check_type ws2tcpip.h "struct sockaddr_storage"
4392     else
4393         disable network
4394     fi
4395 fi
4396
4397 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"