configure

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89
  90 Licensing options:
  91   --enable-gpl             allow use of GPL code, the resulting libs
  92                            and binaries will be under GPL [no]
  93   --enable-version3        upgrade (L)GPL to version 3 [no]
  94   --enable-nonfree         allow use of nonfree code, the resulting libs
  95                            and binaries will be unredistributable [no]
  96
  97 Configuration options:
  98   --disable-static         do not build static libraries [no]
  99   --enable-shared          build shared libraries [no]
 100   --enable-small           optimize for size instead of speed
 101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 102   --enable-gray            enable full grayscale support (slower color)
 103   --disable-swscale-alpha  disable alpha channel support in swscale
 104   --disable-all            disable building components, libraries and programs
 105
 106 Program options:
 107   --disable-programs       do not build command line programs
 108   --disable-avconv         disable avconv build
 109   --disable-avplay         disable avplay build
 110   --disable-avprobe        disable avprobe build
 111   --disable-avserver       deprecated, does nothing
 112
 113 Component options:
 114   --disable-doc            do not build documentation
 115   --disable-avdevice       disable libavdevice build
 116   --disable-avcodec        disable libavcodec build
 117   --disable-avformat       disable libavformat build
 118   --disable-avutil         disable libavutil build
 119   --disable-swscale        disable libswscale build
 120   --disable-avfilter       disable video filter support [no]
 121   --disable-avresample     disable libavresample build [no]
 122   --disable-pthreads       disable pthreads [auto]
 123   --disable-w32threads     disable Win32 threads [auto]
 124   --disable-network        disable network support [no]
 125   --disable-dct            disable DCT code
 126   --disable-error-resilience disable error resilience code
 127   --disable-lsp            disable LSP code
 128   --disable-lzo            disable LZO decoder code
 129   --disable-mdct           disable MDCT code
 130   --disable-rdft           disable RDFT code
 131   --disable-fft            disable FFT code
 132
 133 Hardware accelerators:
 134   --enable-dxva2           enable DXVA2 code
 135   --enable-vaapi           enable VAAPI code
 136   --enable-vda             enable VDA code
 137   --enable-vdpau           enable VDPAU code
 138
 139 Individual component options:
 140   --disable-everything     disable all components listed below
 141   --disable-encoder=NAME   disable encoder NAME
 142   --enable-encoder=NAME    enable encoder NAME
 143   --disable-encoders       disable all encoders
 144   --disable-decoder=NAME   disable decoder NAME
 145   --enable-decoder=NAME    enable decoder NAME
 146   --disable-decoders       disable all decoders
 147   --disable-hwaccel=NAME   disable hwaccel NAME
 148   --enable-hwaccel=NAME    enable hwaccel NAME
 149   --disable-hwaccels       disable all hwaccels
 150   --disable-muxer=NAME     disable muxer NAME
 151   --enable-muxer=NAME      enable muxer NAME
 152   --disable-muxers         disable all muxers
 153   --disable-demuxer=NAME   disable demuxer NAME
 154   --enable-demuxer=NAME    enable demuxer NAME
 155   --disable-demuxers       disable all demuxers
 156   --enable-parser=NAME     enable parser NAME
 157   --disable-parser=NAME    disable parser NAME
 158   --disable-parsers        disable all parsers
 159   --enable-bsf=NAME        enable bitstream filter NAME
 160   --disable-bsf=NAME       disable bitstream filter NAME
 161   --disable-bsfs           disable all bitstream filters
 162   --enable-protocol=NAME   enable protocol NAME
 163   --disable-protocol=NAME  disable protocol NAME
 164   --disable-protocols      disable all protocols
 165   --enable-indev=NAME      enable input device NAME
 166   --disable-indev=NAME     disable input device NAME
 167   --disable-indevs         disable input devices
 168   --enable-outdev=NAME     enable output device NAME
 169   --disable-outdev=NAME    disable output device NAME
 170   --disable-outdevs        disable output devices
 171   --disable-devices        disable all devices
 172   --enable-filter=NAME     enable filter NAME
 173   --disable-filter=NAME    disable filter NAME
 174   --disable-filters        disable all filters
 175
 176 External library support:
 177   --enable-avisynth        enable reading of AviSynth script files [no]
 178   --enable-bzlib           enable bzlib [autodetect]
 179   --enable-frei0r          enable frei0r video filtering
 180   --enable-gnutls          enable gnutls [no]
 181   --enable-libbs2b         enable bs2b DSP library [no]
 182   --enable-libcdio         enable audio CD grabbing with libcdio
 183   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 184                            and libraw1394 [no]
 185   --enable-libfaac         enable AAC encoding via libfaac [no]
 186   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 187   --enable-libfreetype     enable libfreetype [no]
 188   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 189   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 190   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 191   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 192   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 193   --enable-libopencv       enable video filtering via libopencv [no]
 194   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 195   --enable-libopus         enable Opus de/encoding via libopus [no]
 196   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 197   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 198   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 199   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 200   --enable-libtheora       enable Theora encoding via libtheora [no]
 201   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 202   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 203   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 204   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 205   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 206   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 207   --enable-libwebp         enable WebP encoding via libwebp [no]
 208   --enable-libx264         enable H.264 encoding via x264 [no]
 209   --enable-libx265         enable HEVC encoding via x265 [no]
 210   --enable-libxavs         enable AVS encoding via xavs [no]
 211   --enable-libxvid         enable Xvid encoding via xvidcore,
 212                            native MPEG-4/Xvid encoder exists [no]
 213   --enable-openssl         enable openssl [no]
 214   --enable-x11grab         enable X11 grabbing [no]
 215   --enable-zlib            enable zlib [autodetect]
 216
 217 Toolchain options:
 218   --arch=ARCH              select architecture [$arch]
 219   --cpu=CPU                select the minimum required CPU (affects
 220                            instruction selection, may crash on older CPUs)
 221   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 222   --enable-cross-compile   assume a cross-compiler is used
 223   --sysroot=PATH           root of cross-build tree
 224   --sysinclude=PATH        location of cross-build system headers
 225   --target-os=OS           compiler targets OS [$target_os]
 226   --target-exec=CMD        command to run executables on target
 227   --target-path=DIR        path to view of build directory on target
 228   --target-samples=DIR     path to samples directory on target
 229   --toolchain=NAME         set tool defaults according to NAME
 230   --nm=NM                  use nm tool
 231   --ar=AR                  use archive tool AR [$ar_default]
 232   --as=AS                  use assembler AS [$as_default]
 233   --cc=CC                  use C compiler CC [$cc_default]
 234   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 235   --ld=LD                  use linker LD
 236   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 237   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 238   --host-cc=HOSTCC         use host C compiler HOSTCC
 239   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 240   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 241   --host-ld=HOSTLD         use host linker HOSTLD
 242   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 243   --host-libs=HLIBS        use libs HLIBS when linking for host
 244   --host-os=OS             compiler host OS [$target_os]
 245   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 246   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 247   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 248   --extra-version=STRING   version string suffix []
 249   --optflags=OPTFLAGS      override optimization-related compiler flags
 250   --build-suffix=SUFFIX    library name suffix []
 251   --enable-pic             build position-independent code
 252   --enable-thumb           compile for Thumb instruction set
 253   --enable-lto             use link-time optimization
 254
 255 Advanced options (experts only):
 256   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 257   --disable-symver         disable symbol versioning
 258   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 259   --disable-safe-bitstream-reader
 260                            disable buffer boundary checking in bitreaders
 261                            (faster, but may crash)
 262   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 263   --enable-sram            allow use of on-chip SRAM
 264
 265 Optimization options (experts only):
 266   --disable-asm            disable all assembler optimizations
 267   --disable-altivec        disable AltiVec optimizations
 268   --disable-amd3dnow       disable 3DNow! optimizations
 269   --disable-amd3dnowext    disable 3DNow! extended optimizations
 270   --disable-mmx            disable MMX optimizations
 271   --disable-mmxext         disable MMXEXT optimizations
 272   --disable-sse            disable SSE optimizations
 273   --disable-sse2           disable SSE2 optimizations
 274   --disable-sse3           disable SSE3 optimizations
 275   --disable-ssse3          disable SSSE3 optimizations
 276   --disable-sse4           disable SSE4 optimizations
 277   --disable-sse42          disable SSE4.2 optimizations
 278   --disable-avx            disable AVX optimizations
 279   --disable-xop            disable XOP optimizations
 280   --disable-fma3           disable FMA3 optimizations
 281   --disable-fma4           disable FMA4 optimizations
 282   --disable-avx2           disable AVX2 optimizations
 283   --disable-armv5te        disable armv5te optimizations
 284   --disable-armv6          disable armv6 optimizations
 285   --disable-armv6t2        disable armv6t2 optimizations
 286   --disable-vfp            disable VFP optimizations
 287   --disable-neon           disable NEON optimizations
 288   --disable-inline-asm     disable use of inline assembler
 289   --disable-yasm           disable use of yasm assembler
 290
 291 Developer options (useful when working on Libav itself):
 292   --disable-debug          disable debugging symbols
 293   --enable-debug=LEVEL     set the debug level [$debuglevel]
 294   --disable-optimizations  disable compiler optimizations
 295   --enable-extra-warnings  enable more compiler warnings
 296   --samples=PATH           location of test samples for FATE, if not set use
 297                            \$LIBAV_SAMPLES at make invocation time.
 298   --enable-neon-clobber-test check NEON registers for clobbering (should be
 299                            used only for debugging purposes)
 300   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 301                            should be used only for debugging purposes)
 302   --enable-random          randomly enable/disable components
 303   --disable-random
 304   --enable-random=LIST     randomly enable/disable specific components or
 305   --disable-random=LIST    component groups. LIST is a comma-separated list
 306                            of NAME[:PROB] entries where NAME is a component
 307                            (group) and PROB the probability associated with
 308                            NAME (default 0.5).
 309   --random-seed=VALUE      seed value for --enable/disable-random
 310
 311 NOTE: Object files are built at the place where configure is launched.
 312 EOF
 313   exit 0
 314 }
 315
 316 quotes='""'
 317
 318 log(){
 319     echo "$@" >> $logfile
 320 }
 321
 322 log_file(){
 323     log BEGIN $1
 324     pr -n -t $1 >> $logfile
 325     log END $1
 326 }
 327
 328 echolog(){
 329     log "$@"
 330     echo "$@"
 331 }
 332
 333 warn(){
 334     log "WARNING: $*"
 335     WARNINGS="${WARNINGS}WARNING: $*\n"
 336 }
 337
 338 die(){
 339     echolog "$@"
 340     cat <<EOF
 341
 342 If you think configure made a mistake, make sure you are using the latest
 343 version from Git.  If the latest version fails, report the problem to the
 344 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 345 EOF
 346     if disabled logging; then
 347         cat <<EOF
 348 Rerun configure with logging enabled (do not use --disable-logging), and
 349 include the log this produces with your report.
 350 EOF
 351     else
 352         cat <<EOF
 353 Include the log file "$logfile" produced by configure as this will help
 354 solving the problem.
 355 EOF
 356     fi
 357     exit 1
 358 }
 359
 360 # Avoid locale weirdness, besides we really just want to translate ASCII.
 361 toupper(){
 362     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 363 }
 364
 365 tolower(){
 366     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 367 }
 368
 369 c_escape(){
 370     echo "$*" | sed 's/["\\]/\\\0/g'
 371 }
 372
 373 sh_quote(){
 374     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 375     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 376     echo "$v"
 377 }
 378
 379 cleanws(){
 380     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 381 }
 382
 383 filter(){
 384     pat=$1
 385     shift
 386     for v; do
 387         eval "case $v in $pat) echo $v ;; esac"
 388     done
 389 }
 390
 391 filter_out(){
 392     pat=$1
 393     shift
 394     for v; do
 395         eval "case $v in $pat) ;; *) echo $v ;; esac"
 396     done
 397 }
 398
 399 map(){
 400     m=$1
 401     shift
 402     for v; do eval $m; done
 403 }
 404
 405 add_suffix(){
 406     suffix=$1
 407     shift
 408     for v; do echo ${v}${suffix}; done
 409 }
 410
 411 set_all(){
 412     value=$1
 413     shift
 414     for var in $*; do
 415         eval $var=$value
 416     done
 417 }
 418
 419 set_weak(){
 420     value=$1
 421     shift
 422     for var; do
 423         eval : \${$var:=$value}
 424     done
 425 }
 426
 427 sanitize_var_name(){
 428     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 429 }
 430
 431 set_safe(){
 432     var=$1
 433     shift
 434     eval $(sanitize_var_name "$var")='$*'
 435 }
 436
 437 get_safe(){
 438     eval echo \$$(sanitize_var_name "$1")
 439 }
 440
 441 pushvar(){
 442     for pvar in $*; do
 443         eval level=\${${pvar}_level:=0}
 444         eval ${pvar}_${level}="\$$pvar"
 445         eval ${pvar}_level=$(($level+1))
 446     done
 447 }
 448
 449 popvar(){
 450     for pvar in $*; do
 451         eval level=\${${pvar}_level:-0}
 452         test $level = 0 && continue
 453         eval level=$(($level-1))
 454         eval $pvar="\${${pvar}_${level}}"
 455         eval ${pvar}_level=$level
 456         eval unset ${pvar}_${level}
 457     done
 458 }
 459
 460 enable(){
 461     set_all yes $*
 462 }
 463
 464 disable(){
 465     set_all no $*
 466 }
 467
 468 enable_weak(){
 469     set_weak yes $*
 470 }
 471
 472 disable_weak(){
 473     set_weak no $*
 474 }
 475
 476 enable_safe(){
 477     for var; do
 478         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 479     done
 480 }
 481
 482 disable_safe(){
 483     for var; do
 484         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 485     done
 486 }
 487
 488 do_enable_deep(){
 489     for var; do
 490         enabled $var && continue
 491         eval sel="\$${var}_select"
 492         eval sgs="\$${var}_suggest"
 493         pushvar var sgs
 494         enable_deep $sel
 495         popvar sgs
 496         enable_deep_weak $sgs
 497         popvar var
 498     done
 499 }
 500
 501 enable_deep(){
 502     do_enable_deep $*
 503     enable $*
 504 }
 505
 506 enable_deep_weak(){
 507     for var; do
 508         disabled $var && continue
 509         pushvar var
 510         do_enable_deep $var
 511         popvar var
 512         enable_weak $var
 513     done
 514 }
 515
 516 enabled(){
 517     test "${1#!}" = "$1" && op== || op=!=
 518     eval test "x\$${1#!}" $op "xyes"
 519 }
 520
 521 disabled(){
 522     test "${1#!}" = "$1" && op== || op=!=
 523     eval test "x\$${1#!}" $op "xno"
 524 }
 525
 526 enabled_all(){
 527     for opt; do
 528         enabled $opt || return 1
 529     done
 530 }
 531
 532 disabled_all(){
 533     for opt; do
 534         disabled $opt || return 1
 535     done
 536 }
 537
 538 enabled_any(){
 539     for opt; do
 540         enabled $opt && return 0
 541     done
 542 }
 543
 544 disabled_any(){
 545     for opt; do
 546         disabled $opt && return 0
 547     done
 548     return 1
 549 }
 550
 551 set_default(){
 552     for opt; do
 553         eval : \${$opt:=\$${opt}_default}
 554     done
 555 }
 556
 557 is_in(){
 558     value=$1
 559     shift
 560     for var in $*; do
 561         [ $var = $value ] && return 0
 562     done
 563     return 1
 564 }
 565
 566 do_check_deps(){
 567     for cfg; do
 568         cfg="${cfg#!}"
 569         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 570         disabled ${cfg}_checking && continue
 571         enable ${cfg}_checking
 572         append allopts $cfg
 573
 574         eval dep_all="\$${cfg}_deps"
 575         eval dep_any="\$${cfg}_deps_any"
 576         eval dep_sel="\$${cfg}_select"
 577         eval dep_sgs="\$${cfg}_suggest"
 578         eval dep_ifa="\$${cfg}_if"
 579         eval dep_ifn="\$${cfg}_if_any"
 580
 581         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 582         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 583         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 584
 585         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 586         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 587         enabled_all  $dep_all || disable $cfg
 588         enabled_any  $dep_any || disable $cfg
 589         disabled_any $dep_sel && disable $cfg
 590
 591         if enabled $cfg; then
 592             enable_deep $dep_sel
 593             enable_deep_weak $dep_sgs
 594         fi
 595
 596         disable ${cfg}_checking
 597     done
 598 }
 599
 600 check_deps(){
 601     unset allopts
 602
 603     do_check_deps "$@"
 604
 605     for cfg in $allopts; do
 606         enabled $cfg || continue
 607         eval dep_extralibs="\$${cfg}_extralibs"
 608         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 609     done
 610 }
 611
 612 print_config(){
 613     pfx=$1
 614     files=$2
 615     shift 2
 616     map 'eval echo "$v \${$v:-no}"' "$@" |
 617     awk "BEGIN { split(\"$files\", files) }
 618         {
 619             c = \"$pfx\" toupper(\$1);
 620             v = \$2;
 621             sub(/yes/, 1, v);
 622             sub(/no/,  0, v);
 623             for (f in files) {
 624                 file = files[f];
 625                 if (file ~ /\\.h\$/) {
 626                     printf(\"#define %s %d\\n\", c, v) >>file;
 627                 } else if (file ~ /\\.asm\$/) {
 628                     printf(\"%%define %s %d\\n\", c, v) >>file;
 629                 } else if (file ~ /\\.mak\$/) {
 630                     n = -v ? \"\" : \"!\";
 631                     printf(\"%s%s=yes\\n\", n, c) >>file;
 632                 }
 633             }
 634         }"
 635 }
 636
 637 print_enabled(){
 638     suf=$1
 639     shift
 640     for v; do
 641         enabled $v && printf "%s\n" ${v%$suf};
 642     done
 643 }
 644
 645 append(){
 646     var=$1
 647     shift
 648     eval "$var=\"\$$var $*\""
 649 }
 650
 651 prepend(){
 652     var=$1
 653     shift
 654     eval "$var=\"$* \$$var\""
 655 }
 656
 657 unique(){
 658     var=$1
 659     uniq_list=""
 660     for tok in $(eval echo \$$var); do
 661         uniq_list="$(filter_out $tok $uniq_list) $tok"
 662     done
 663     eval "$var=\"${uniq_list}\""
 664 }
 665
 666 add_cppflags(){
 667     append CPPFLAGS "$@"
 668 }
 669
 670 add_cflags(){
 671     append CFLAGS $($cflags_filter "$@")
 672 }
 673
 674 add_asflags(){
 675     append ASFLAGS $($asflags_filter "$@")
 676 }
 677
 678 add_ldflags(){
 679     append LDFLAGS $($ldflags_filter "$@")
 680 }
 681
 682 add_stripflags(){
 683     append STRIPFLAGS "$@"
 684 }
 685
 686 add_extralibs(){
 687     prepend extralibs $($ldflags_filter "$@")
 688 }
 689
 690 add_host_cppflags(){
 691     append host_cppflags "$@"
 692 }
 693
 694 add_host_cflags(){
 695     append host_cflags $($host_cflags_filter "$@")
 696 }
 697
 698 add_host_ldflags(){
 699     append host_ldflags $($host_ldflags_filter "$@")
 700 }
 701
 702 add_compat(){
 703     append compat_objs $1
 704     shift
 705     map 'add_cppflags -D$v' "$@"
 706 }
 707
 708 check_cmd(){
 709     log "$@"
 710     "$@" >> $logfile 2>&1
 711 }
 712
 713 cc_o(){
 714     eval printf '%s\\n' $CC_O
 715 }
 716
 717 cc_e(){
 718     eval printf '%s\\n' $CC_E
 719 }
 720
 721 check_cc(){
 722     log check_cc "$@"
 723     cat > $TMPC
 724     log_file $TMPC
 725     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 726 }
 727
 728 check_cpp(){
 729     log check_cpp "$@"
 730     cat > $TMPC
 731     log_file $TMPC
 732     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 733 }
 734
 735 as_o(){
 736     eval printf '%s\\n' $AS_O
 737 }
 738
 739 check_as(){
 740     log check_as "$@"
 741     cat > $TMPS
 742     log_file $TMPS
 743     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 744 }
 745
 746 check_inline_asm(){
 747     log check_inline_asm "$@"
 748     name="$1"
 749     code="$2"
 750     shift 2
 751     disable $name
 752     check_cc "$@" <<EOF && enable $name
 753 void foo(void){ __asm__ volatile($code); }
 754 EOF
 755 }
 756
 757 check_insn(){
 758     log check_insn "$@"
 759     check_inline_asm ${1}_inline "\"$2\""
 760     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 761 }
 762
 763 check_yasm(){
 764     log check_yasm "$@"
 765     echo "$1" > $TMPS
 766     log_file $TMPS
 767     shift 1
 768     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 769 }
 770
 771 ld_o(){
 772     eval printf '%s\\n' $LD_O
 773 }
 774
 775 check_ld(){
 776     log check_ld "$@"
 777     flags=$(filter_out '-l*' "$@")
 778     libs=$(filter '-l*' "$@")
 779     check_cc $($cflags_filter $flags) || return
 780     flags=$($ldflags_filter $flags)
 781     libs=$($ldflags_filter $libs)
 782     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 783 }
 784
 785 print_include(){
 786     hdr=$1
 787     test "${hdr%.h}" = "${hdr}" &&
 788         echo "#include $hdr"    ||
 789         echo "#include <$hdr>"
 790 }
 791
 792 check_code(){
 793     log check_code "$@"
 794     check=$1
 795     headers=$2
 796     code=$3
 797     shift 3
 798     {
 799         for hdr in $headers; do
 800             print_include $hdr
 801         done
 802         echo "int main(void) { $code; return 0; }"
 803     } | check_$check "$@"
 804 }
 805
 806 check_cppflags(){
 807     log check_cppflags "$@"
 808     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 809 int x;
 810 EOF
 811 }
 812
 813 test_cflags(){
 814     log test_cflags "$@"
 815     set -- $($cflags_filter "$@")
 816     check_cc "$@" <<EOF
 817 int x;
 818 EOF
 819 }
 820
 821 check_cflags(){
 822     log check_cflags "$@"
 823     test_cflags "$@" && add_cflags "$@"
 824 }
 825
 826 test_ldflags(){
 827     log test_ldflags "$@"
 828     check_ld "$@" <<EOF
 829 int main(void){ return 0; }
 830 EOF
 831 }
 832
 833 check_ldflags(){
 834     log check_ldflags "$@"
 835     test_ldflags "$@" && add_ldflags "$@"
 836 }
 837
 838 test_stripflags(){
 839     log test_stripflags "$@"
 840     # call check_cc to get a fresh TMPO
 841     check_cc <<EOF
 842 int main(void) { return 0; }
 843 EOF
 844     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 845 }
 846
 847 check_stripflags(){
 848     log check_stripflags "$@"
 849     test_stripflags "$@" && add_stripflags "$@"
 850 }
 851
 852 check_header(){
 853     log check_header "$@"
 854     header=$1
 855     shift
 856     disable_safe $header
 857     check_cpp "$@" <<EOF && enable_safe $header
 858 #include <$header>
 859 int x;
 860 EOF
 861 }
 862
 863 check_func(){
 864     log check_func "$@"
 865     func=$1
 866     shift
 867     disable $func
 868     check_ld "$@" <<EOF && enable $func
 869 extern int $func();
 870 int main(void){ $func(); }
 871 EOF
 872 }
 873
 874 check_mathfunc(){
 875     log check_mathfunc "$@"
 876     func=$1
 877     narg=$2
 878     shift 2
 879     test $narg = 2 && args="f, g" || args="f"
 880     disable $func
 881     check_ld "$@" <<EOF && enable $func
 882 #include <math.h>
 883 float foo(float f, float g) { return $func($args); }
 884 int main(void){ return 0; }
 885 EOF
 886 }
 887
 888 check_func_headers(){
 889     log check_func_headers "$@"
 890     headers=$1
 891     funcs=$2
 892     shift 2
 893     {
 894         for hdr in $headers; do
 895             print_include $hdr
 896         done
 897         for func in $funcs; do
 898             echo "long check_$func(void) { return (long) $func; }"
 899         done
 900         echo "int main(void) { return 0; }"
 901     } | check_ld "$@" && enable $funcs && enable_safe $headers
 902 }
 903
 904 check_cpp_condition(){
 905     log check_cpp_condition "$@"
 906     header=$1
 907     condition=$2
 908     shift 2
 909     check_cpp "$@" <<EOF
 910 #include <$header>
 911 #if !($condition)
 912 #error "unsatisfied condition: $condition"
 913 #endif
 914 EOF
 915 }
 916
 917 check_lib(){
 918     log check_lib "$@"
 919     header="$1"
 920     func="$2"
 921     shift 2
 922     check_header $header && check_func $func "$@" && add_extralibs "$@"
 923 }
 924
 925 check_lib2(){
 926     log check_lib2 "$@"
 927     headers="$1"
 928     funcs="$2"
 929     shift 2
 930     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 931 }
 932
 933 check_pkg_config(){
 934     log check_pkg_config "$@"
 935     pkg="$1"
 936     headers="$2"
 937     funcs="$3"
 938     shift 3
 939     check_cmd $pkg_config --exists --print-errors $pkg || return
 940     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
 941     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
 942     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 943         set_safe ${pkg}_cflags $pkg_cflags   &&
 944         set_safe ${pkg}_libs   $pkg_libs
 945 }
 946
 947 check_exec(){
 948     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 949 }
 950
 951 check_exec_crash(){
 952     code=$(cat)
 953
 954     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 955     # are safe but may not be available everywhere.  Thus we use
 956     # raise(SIGTERM) instead.  The check is run in a subshell so we
 957     # can redirect the "Terminated" message from the shell.  SIGBUS
 958     # is not defined by standard C so it is used conditionally.
 959
 960     (check_exec "$@") >> $logfile 2>&1 <<EOF
 961 #include <signal.h>
 962 static void sighandler(int sig){
 963     raise(SIGTERM);
 964 }
 965 int foo(void){
 966     $code
 967 }
 968 int (*func_ptr)(void) = foo;
 969 int main(void){
 970     signal(SIGILL, sighandler);
 971     signal(SIGFPE, sighandler);
 972     signal(SIGSEGV, sighandler);
 973 #ifdef SIGBUS
 974     signal(SIGBUS, sighandler);
 975 #endif
 976     return func_ptr();
 977 }
 978 EOF
 979 }
 980
 981 check_type(){
 982     log check_type "$@"
 983     headers=$1
 984     type=$2
 985     shift 2
 986     disable_safe "$type"
 987     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 988 }
 989
 990 check_struct(){
 991     log check_struct "$@"
 992     headers=$1
 993     struct=$2
 994     member=$3
 995     shift 3
 996     disable_safe "${struct}_${member}"
 997     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 998         enable_safe "${struct}_${member}"
 999 }
1000
1001 check_builtin(){
1002     log check_builtin "$@"
1003     name=$1
1004     headers=$2
1005     builtin=$3
1006     shift 3
1007     disable "$name"
1008     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1009 }
1010
1011 check_compile_assert(){
1012     log check_compile_assert "$@"
1013     name=$1
1014     headers=$2
1015     condition=$3
1016     shift 3
1017     disable "$name"
1018     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1019 }
1020
1021 require(){
1022     name="$1"
1023     header="$2"
1024     func="$3"
1025     shift 3
1026     check_lib $header $func "$@" || die "ERROR: $name not found"
1027 }
1028
1029 require2(){
1030     name="$1"
1031     headers="$2"
1032     func="$3"
1033     shift 3
1034     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1035 }
1036
1037 require_pkg_config(){
1038     pkg="$1"
1039     check_pkg_config "$@" || die "ERROR: $pkg not found"
1040     add_cflags    $(get_safe ${pkg}_cflags)
1041     add_extralibs $(get_safe ${pkg}_libs)
1042 }
1043
1044 hostcc_e(){
1045     eval printf '%s\\n' $HOSTCC_E
1046 }
1047
1048 hostcc_o(){
1049     eval printf '%s\\n' $HOSTCC_O
1050 }
1051
1052 check_host_cc(){
1053     log check_host_cc "$@"
1054     cat > $TMPC
1055     log_file $TMPC
1056     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1057 }
1058
1059 check_host_cpp(){
1060     log check_host_cpp "$@"
1061     cat > $TMPC
1062     log_file $TMPC
1063     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1064 }
1065
1066 check_host_cppflags(){
1067     log check_host_cppflags "$@"
1068     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1069 int x;
1070 EOF
1071 }
1072
1073 check_host_cflags(){
1074     log check_host_cflags "$@"
1075     set -- $($host_cflags_filter "$@")
1076     check_host_cc "$@" <<EOF && append host_cflags "$@"
1077 int x;
1078 EOF
1079 }
1080
1081 check_host_cpp_condition(){
1082     log check_host_cpp_condition "$@"
1083     header=$1
1084     condition=$2
1085     shift 2
1086     check_host_cpp "$@" <<EOF
1087 #include <$header>
1088 #if !($condition)
1089 #error "unsatisfied condition: $condition"
1090 #endif
1091 EOF
1092 }
1093
1094 apply(){
1095     file=$1
1096     shift
1097     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1098 }
1099
1100 cp_if_changed(){
1101     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1102     mkdir -p "$(dirname $2)"
1103     $cp_f "$1" "$2"
1104 }
1105
1106 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1107 # system-dependent things.
1108
1109 COMPONENT_LIST="
1110     bsfs
1111     decoders
1112     demuxers
1113     encoders
1114     filters
1115     hwaccels
1116     indevs
1117     muxers
1118     outdevs
1119     parsers
1120     protocols
1121 "
1122
1123 EXAMPLE_LIST="
1124     avcodec_example
1125     filter_audio_example
1126     metadata_example
1127     output_example
1128     transcode_aac_example
1129 "
1130
1131 EXTERNAL_LIBRARY_LIST="
1132     avisynth
1133     bzlib
1134     frei0r
1135     gnutls
1136     libbs2b
1137     libcdio
1138     libdc1394
1139     libfaac
1140     libfdk_aac
1141     libfontconfig
1142     libfreetype
1143     libgsm
1144     libilbc
1145     libmp3lame
1146     libopencore_amrnb
1147     libopencore_amrwb
1148     libopencv
1149     libopenjpeg
1150     libopus
1151     libpulse
1152     librtmp
1153     libschroedinger
1154     libspeex
1155     libtheora
1156     libtwolame
1157     libvo_aacenc
1158     libvo_amrwbenc
1159     libvorbis
1160     libvpx
1161     libwavpack
1162     libwebp
1163     libx264
1164     libx265
1165     libxavs
1166     libxvid
1167     openssl
1168     x11grab
1169     zlib
1170 "
1171
1172 FEATURE_LIST="
1173     gray
1174     hardcoded_tables
1175     runtime_cpudetect
1176     safe_bitstream_reader
1177     shared
1178     small
1179     sram
1180     static
1181     swscale_alpha
1182 "
1183
1184 HWACCEL_LIST="
1185     dxva2
1186     vaapi
1187     vda
1188     vdpau
1189 "
1190
1191 LIBRARY_LIST="
1192     avcodec
1193     avdevice
1194     avfilter
1195     avformat
1196     avresample
1197     avutil
1198     swscale
1199 "
1200
1201 LICENSE_LIST="
1202     gpl
1203     nonfree
1204     version3
1205 "
1206
1207 PROGRAM_LIST="
1208     avconv
1209     avplay
1210     avprobe
1211 "
1212
1213 SUBSYSTEM_LIST="
1214     dct
1215     doc
1216     error_resilience
1217     fft
1218     lsp
1219     lzo
1220     mdct
1221     network
1222     rdft
1223 "
1224
1225 CONFIG_LIST="
1226     $COMPONENT_LIST
1227     $EXAMPLE_LIST
1228     $EXTERNAL_LIBRARY_LIST
1229     $FEATURE_LIST
1230     $HWACCEL_LIST
1231     $LICENSE_LIST
1232     $LIBRARY_LIST
1233     $PROGRAM_LIST
1234     $SUBSYSTEM_LIST
1235     memalign_hack
1236     neon_clobber_test
1237     pic
1238     pod2man
1239     texi2html
1240     thumb
1241     xmm_clobber_test
1242 "
1243
1244 THREADS_LIST="
1245     pthreads
1246     w32threads
1247 "
1248
1249 ATOMICS_LIST="
1250     atomics_gcc
1251     atomics_suncc
1252     atomics_win32
1253 "
1254
1255 ARCH_LIST="
1256     aarch64
1257     alpha
1258     arm
1259     avr32
1260     avr32_ap
1261     avr32_uc
1262     bfin
1263     ia64
1264     m68k
1265     mips
1266     mips64
1267     parisc
1268     ppc
1269     ppc64
1270     s390
1271     sh4
1272     sparc
1273     sparc64
1274     tilegx
1275     tilepro
1276     tomi
1277     x86
1278     x86_32
1279     x86_64
1280 "
1281
1282 ARCH_EXT_LIST_ARM="
1283     armv5te
1284     armv6
1285     armv6t2
1286     armv8
1287     neon
1288     vfp
1289     vfpv3
1290 "
1291
1292 ARCH_EXT_LIST_X86_SIMD="
1293     amd3dnow
1294     amd3dnowext
1295     avx
1296     avx2
1297     fma3
1298     fma4
1299     mmx
1300     mmxext
1301     sse
1302     sse2
1303     sse3
1304     sse4
1305     sse42
1306     ssse3
1307     xop
1308 "
1309
1310 ARCH_EXT_LIST_PPC="
1311     altivec
1312     dcbzl
1313     ldbrx
1314     ppc4xx
1315 "
1316
1317 ARCH_EXT_LIST_X86="
1318     $ARCH_EXT_LIST_X86_SIMD
1319     cpunop
1320     i686
1321 "
1322
1323 ARCH_EXT_LIST="
1324     $ARCH_EXT_LIST_ARM
1325     $ARCH_EXT_LIST_PPC
1326     $ARCH_EXT_LIST_X86
1327     loongson
1328     vis
1329 "
1330
1331 ARCH_FEATURES="
1332     aligned_stack
1333     fast_64bit
1334     fast_clz
1335     fast_cmov
1336     local_aligned_8
1337     local_aligned_16
1338 "
1339
1340 BUILTIN_LIST="
1341     atomic_cas_ptr
1342     machine_rw_barrier
1343     MemoryBarrier
1344     mm_empty
1345     rdtsc
1346     sync_val_compare_and_swap
1347 "
1348 HAVE_LIST_CMDLINE="
1349     inline_asm
1350     symver
1351     yasm
1352 "
1353
1354 HAVE_LIST_PUB="
1355     bigendian
1356     fast_unaligned
1357 "
1358
1359 HEADERS_LIST="
1360     alsa_asoundlib_h
1361     altivec_h
1362     arpa_inet_h
1363     cdio_paranoia_h
1364     cdio_paranoia_paranoia_h
1365     dev_bktr_ioctl_bt848_h
1366     dev_bktr_ioctl_meteor_h
1367     dev_ic_bt8xx_h
1368     dev_video_bktr_ioctl_bt848_h
1369     dev_video_meteor_ioctl_meteor_h
1370     direct_h
1371     dlfcn_h
1372     dxva_h
1373     gsm_h
1374     io_h
1375     mach_mach_time_h
1376     machine_ioctl_bt848_h
1377     machine_ioctl_meteor_h
1378     malloc_h
1379     poll_h
1380     sndio_h
1381     soundcard_h
1382     sys_mman_h
1383     sys_param_h
1384     sys_resource_h
1385     sys_select_h
1386     sys_soundcard_h
1387     sys_time_h
1388     sys_un_h
1389     sys_videoio_h
1390     unistd_h
1391     windows_h
1392     winsock2_h
1393 "
1394
1395 MATH_FUNCS="
1396     atanf
1397     atan2f
1398     cbrtf
1399     cosf
1400     exp2
1401     exp2f
1402     expf
1403     isinf
1404     isnan
1405     ldexpf
1406     llrint
1407     llrintf
1408     log2
1409     log2f
1410     log10f
1411     lrint
1412     lrintf
1413     powf
1414     rint
1415     round
1416     roundf
1417     sinf
1418     trunc
1419     truncf
1420 "
1421
1422 SYSTEM_FUNCS="
1423     aligned_malloc
1424     closesocket
1425     CommandLineToArgvW
1426     CoTaskMemFree
1427     CryptGenRandom
1428     dlopen
1429     fcntl
1430     flt_lim
1431     fork
1432     getaddrinfo
1433     gethrtime
1434     getopt
1435     GetProcessAffinityMask
1436     GetProcessMemoryInfo
1437     GetProcessTimes
1438     getrusage
1439     getservbyport
1440     GetSystemTimeAsFileTime
1441     gettimeofday
1442     inet_aton
1443     isatty
1444     jack_port_get_latency_range
1445     localtime_r
1446     mach_absolute_time
1447     MapViewOfFile
1448     memalign
1449     mkstemp
1450     mmap
1451     mprotect
1452     nanosleep
1453     posix_memalign
1454     sched_getaffinity
1455     SetConsoleTextAttribute
1456     setmode
1457     setrlimit
1458     Sleep
1459     strerror_r
1460     strptime
1461     sysconf
1462     sysctl
1463     usleep
1464     VirtualAlloc
1465 "
1466
1467 TOOLCHAIN_FEATURES="
1468     as_dn_directive
1469     as_func
1470     asm_mod_q
1471     attribute_may_alias
1472     attribute_packed
1473     ebp_available
1474     ebx_available
1475     gnu_as
1476     ibm_asm
1477     inline_asm_labels
1478     pragma_deprecated
1479     symver_asm_label
1480     symver_gnu_asm
1481     vfp_args
1482     xform_asm
1483     xmm_clobbers
1484 "
1485
1486 TYPES_LIST="
1487     socklen_t
1488     struct_addrinfo
1489     struct_group_source_req
1490     struct_ip_mreq_source
1491     struct_ipv6_mreq
1492     struct_pollfd
1493     struct_rusage_ru_maxrss
1494     struct_sockaddr_in6
1495     struct_sockaddr_sa_len
1496     struct_sockaddr_storage
1497     struct_v4l2_frmivalenum_discrete
1498 "
1499
1500 HAVE_LIST="
1501     $ARCH_EXT_LIST
1502     $(add_suffix _external $ARCH_EXT_LIST)
1503     $(add_suffix _inline   $ARCH_EXT_LIST)
1504     $ARCH_FEATURES
1505     $ATOMICS_LIST
1506     $BUILTIN_LIST
1507     $HAVE_LIST_CMDLINE
1508     $HAVE_LIST_PUB
1509     $HEADERS_LIST
1510     $MATH_FUNCS
1511     $SYSTEM_FUNCS
1512     $THREADS_LIST
1513     $TOOLCHAIN_FEATURES
1514     $TYPES_LIST
1515     atomics_native
1516     dos_paths
1517     dxva2_lib
1518     libc_msvcrt
1519     libdc1394_1
1520     libdc1394_2
1521     sdl
1522     threads
1523     vdpau_x11
1524     xlib
1525 "
1526
1527 # options emitted with CONFIG_ prefix but not available on the command line
1528 CONFIG_EXTRA="
1529     aandcttables
1530     ac3dsp
1531     audio_frame_queue
1532     audiodsp
1533     blockdsp
1534     cabac
1535     dsputil
1536     gcrypt
1537     golomb
1538     gplv3
1539     h263dsp
1540     h264chroma
1541     h264dsp
1542     h264pred
1543     h264qpel
1544     hpeldsp
1545     huffman
1546     huffyuvdsp
1547     huffyuvencdsp
1548     intrax8
1549     lgplv3
1550     lpc
1551     mpegaudio
1552     mpegaudiodsp
1553     mpegvideo
1554     mpegvideoenc
1555     nettle
1556     qpeldsp
1557     rangecoder
1558     riffdec
1559     riffenc
1560     rtpdec
1561     rtpenc_chain
1562     sinewin
1563     tpeldsp
1564     videodsp
1565     vp3dsp
1566 "
1567
1568 CMDLINE_SELECT="
1569     $ARCH_EXT_LIST
1570     $CONFIG_LIST
1571     $HAVE_LIST_CMDLINE
1572     $THREADS_LIST
1573     asm
1574     cross_compile
1575     debug
1576     extra_warnings
1577     logging
1578     lto
1579     optimizations
1580 "
1581
1582 PATHS_LIST="
1583     bindir
1584     datadir
1585     docdir
1586     incdir
1587     libdir
1588     mandir
1589     prefix
1590     shlibdir
1591 "
1592
1593 CMDLINE_SET="
1594     $PATHS_LIST
1595     ar
1596     arch
1597     as
1598     build_suffix
1599     cc
1600     cpu
1601     cross_prefix
1602     dep_cc
1603     extra_version
1604     host_cc
1605     host_cflags
1606     host_ld
1607     host_ldflags
1608     host_libs
1609     host_os
1610     ld
1611     logfile
1612     malloc_prefix
1613     nm
1614     optflags
1615     pkg_config
1616     pkg_config_flags
1617     random_seed
1618     samples
1619     sysinclude
1620     sysroot
1621     target_exec
1622     target_os
1623     target_path
1624     target_samples
1625     toolchain
1626 "
1627
1628 CMDLINE_APPEND="
1629     extra_cflags
1630     host_cppflags
1631 "
1632
1633 # code dependency declarations
1634
1635 # architecture extensions
1636
1637 armv5te_deps="arm"
1638 armv6_deps="arm"
1639 armv6t2_deps="arm"
1640 armv8_deps="aarch64"
1641 neon_deps_any="aarch64 arm"
1642 vfp_deps_any="aarch64 arm"
1643 vfpv3_deps="vfp"
1644
1645 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1646
1647 altivec_deps="ppc"
1648 ppc4xx_deps="ppc"
1649
1650 cpunop_deps="i686"
1651 x86_64_select="i686"
1652 x86_64_suggest="fast_cmov"
1653
1654 amd3dnow_deps="mmx"
1655 amd3dnowext_deps="amd3dnow"
1656 i686_deps="x86"
1657 mmx_deps="x86"
1658 mmxext_deps="mmx"
1659 sse_deps="mmxext"
1660 sse2_deps="sse"
1661 sse3_deps="sse2"
1662 ssse3_deps="sse3"
1663 sse4_deps="ssse3"
1664 sse42_deps="sse4"
1665 avx_deps="sse42"
1666 xop_deps="avx"
1667 fma3_deps="avx"
1668 fma4_deps="avx"
1669 avx2_deps="avx"
1670
1671 mmx_external_deps="yasm"
1672 mmx_inline_deps="inline_asm"
1673 mmx_suggest="mmx_external mmx_inline"
1674
1675 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1676     eval dep=\$${ext}_deps
1677     eval ${ext}_external_deps='"${dep}_external"'
1678     eval ${ext}_inline_deps='"${dep}_inline"'
1679     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1680 done
1681
1682 aligned_stack_if_any="aarch64 ppc x86"
1683 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1684 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1685 fast_unaligned_if_any="aarch64 ppc x86"
1686
1687 need_memalign="altivec neon sse"
1688
1689 # system capabilities
1690 log2_deps="!libc_msvcrt"
1691
1692 symver_if_any="symver_asm_label symver_gnu_asm"
1693
1694 # threading support
1695 atomics_gcc_if="sync_val_compare_and_swap"
1696 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1697 atomics_win32_if="MemoryBarrier"
1698 atomics_native_if_any="$ATOMICS_LIST"
1699 w32threads_deps="atomics_native"
1700 threads_if_any="$THREADS_LIST"
1701
1702 # subsystems
1703 dct_select="rdft"
1704 error_resilience_select="dsputil"
1705 mdct_select="fft"
1706 rdft_select="fft"
1707 mpegaudio_select="mpegaudiodsp"
1708 mpegaudiodsp_select="dct"
1709 mpegvideo_select="blockdsp dsputil hpeldsp videodsp"
1710 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1711
1712 # decoders / encoders
1713 aac_decoder_select="mdct sinewin"
1714 aac_encoder_select="audio_frame_queue mdct sinewin"
1715 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1716 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1717 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
1718 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
1719 aic_decoder_select="dsputil golomb"
1720 alac_encoder_select="lpc"
1721 als_decoder_select="dsputil"
1722 amrnb_decoder_select="lsp"
1723 amrwb_decoder_select="lsp"
1724 amv_decoder_select="sp5x_decoder"
1725 ape_decoder_select="dsputil"
1726 asv1_decoder_select="blockdsp dsputil"
1727 asv1_encoder_select="dsputil"
1728 asv2_decoder_select="blockdsp dsputil"
1729 asv2_encoder_select="dsputil"
1730 atrac1_decoder_select="mdct sinewin"
1731 atrac3_decoder_select="mdct"
1732 atrac3p_decoder_select="mdct sinewin"
1733 bink_decoder_select="blockdsp hpeldsp"
1734 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1735 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1736 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
1737 cllc_decoder_select="dsputil"
1738 comfortnoise_encoder_select="lpc"
1739 cook_decoder_select="audiodsp mdct sinewin"
1740 cscd_decoder_select="lzo"
1741 cscd_decoder_suggest="zlib"
1742 dca_decoder_select="mdct"
1743 dnxhd_decoder_select="blockdsp dsputil"
1744 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
1745 dvvideo_decoder_select="dsputil"
1746 dvvideo_encoder_select="dsputil"
1747 dxa_decoder_deps="zlib"
1748 eac3_decoder_select="ac3_decoder"
1749 eac3_encoder_select="ac3_encoder"
1750 eamad_decoder_select="aandcttables blockdsp dsputil mpegvideo"
1751 eatgq_decoder_select="aandcttables dsputil"
1752 eatqi_decoder_select="aandcttables blockdsp dsputil error_resilience mpegvideo"
1753 exr_decoder_deps="zlib"
1754 ffv1_decoder_select="golomb rangecoder"
1755 ffv1_encoder_select="rangecoder"
1756 ffvhuff_decoder_select="huffyuv_decoder"
1757 ffvhuff_encoder_select="huffyuv_encoder"
1758 fic_decoder_select="golomb"
1759 flac_decoder_select="golomb"
1760 flac_encoder_select="dsputil golomb lpc"
1761 flashsv_decoder_deps="zlib"
1762 flashsv_encoder_deps="zlib"
1763 flashsv2_decoder_deps="zlib"
1764 flv_decoder_select="h263_decoder"
1765 flv_encoder_select="h263_encoder"
1766 fourxm_decoder_select="blockdsp dsputil"
1767 fraps_decoder_select="dsputil huffman"
1768 g2m_decoder_deps="zlib"
1769 g2m_decoder_select="blockdsp dsputil"
1770 h261_decoder_select="error_resilience mpegvideo"
1771 h261_encoder_select="aandcttables mpegvideoenc"
1772 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
1773 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1774 h263i_decoder_select="h263_decoder"
1775 h263p_encoder_select="h263_encoder"
1776 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1777 h264_decoder_suggest="error_resilience"
1778 hevc_decoder_select="cabac dsputil golomb videodsp"
1779 huffyuv_decoder_select="dsputil huffyuvdsp"
1780 huffyuv_encoder_select="dsputil huffman huffyuvencdsp"
1781 iac_decoder_select="imc_decoder"
1782 imc_decoder_select="dsputil fft mdct sinewin"
1783 indeo3_decoder_select="hpeldsp"
1784 interplay_video_decoder_select="hpeldsp"
1785 jpegls_decoder_select="golomb mjpeg_decoder"
1786 jpegls_encoder_select="golomb"
1787 jv_decoder_select="blockdsp"
1788 lagarith_decoder_select="huffyuvdsp"
1789 ljpeg_encoder_select="aandcttables mpegvideoenc"
1790 loco_decoder_select="golomb"
1791 mdec_decoder_select="blockdsp dsputil error_resilience mpegvideo"
1792 metasound_decoder_select="lsp mdct sinewin"
1793 mimic_decoder_select="blockdsp dsputil hpeldsp"
1794 mjpeg_decoder_select="blockdsp dsputil hpeldsp"
1795 mjpeg_encoder_select="aandcttables mpegvideoenc"
1796 mjpegb_decoder_select="mjpeg_decoder"
1797 mlp_decoder_select="mlp_parser"
1798 motionpixels_decoder_select="dsputil"
1799 mp1_decoder_select="mpegaudio"
1800 mp1float_decoder_select="mpegaudio"
1801 mp2_decoder_select="mpegaudio"
1802 mp2float_decoder_select="mpegaudio"
1803 mp3_decoder_select="mpegaudio"
1804 mp3adu_decoder_select="mpegaudio"
1805 mp3adufloat_decoder_select="mpegaudio"
1806 mp3float_decoder_select="mpegaudio"
1807 mp3on4_decoder_select="mpegaudio"
1808 mp3on4float_decoder_select="mpegaudio"
1809 mpc7_decoder_select="dsputil mpegaudiodsp"
1810 mpc8_decoder_select="mpegaudiodsp"
1811 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1812 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1813 mpeg1video_decoder_select="error_resilience mpegvideo"
1814 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1815 mpeg2video_decoder_select="error_resilience mpegvideo"
1816 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1817 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1818 mpeg4_encoder_select="h263_encoder"
1819 msmpeg4v1_decoder_select="h263_decoder"
1820 msmpeg4v2_decoder_select="h263_decoder"
1821 msmpeg4v2_encoder_select="h263_encoder"
1822 msmpeg4v3_decoder_select="h263_decoder"
1823 msmpeg4v3_encoder_select="h263_encoder"
1824 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
1825 mxpeg_decoder_select="mjpeg_decoder"
1826 nellymoser_decoder_select="mdct sinewin"
1827 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1828 nuv_decoder_select="dsputil lzo"
1829 on2avc_decoder_select="mdct"
1830 opus_decoder_deps="avresample"
1831 png_decoder_deps="zlib"
1832 png_encoder_deps="zlib"
1833 png_encoder_select="huffyuvencdsp"
1834 prores_decoder_select="dsputil"
1835 prores_encoder_select="dsputil"
1836 qcelp_decoder_select="lsp"
1837 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1838 ra_144_encoder_select="audio_frame_queue lpc"
1839 ralf_decoder_select="golomb"
1840 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1841 rv10_encoder_select="h263_encoder"
1842 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1843 rv20_encoder_select="h263_encoder"
1844 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1845 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1846 shorten_decoder_select="golomb"
1847 sipr_decoder_select="lsp"
1848 sp5x_decoder_select="mjpeg_decoder"
1849 svq1_decoder_select="hpeldsp"
1850 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1851 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1852 svq3_decoder_suggest="zlib"
1853 tak_decoder_select="audiodsp"
1854 theora_decoder_select="vp3_decoder"
1855 thp_decoder_select="mjpeg_decoder"
1856 tiff_decoder_suggest="zlib"
1857 tiff_encoder_suggest="zlib"
1858 truehd_decoder_select="mlp_decoder"
1859 truemotion2_decoder_select="dsputil"
1860 truespeech_decoder_select="dsputil"
1861 tscc_decoder_deps="zlib"
1862 twinvq_decoder_select="mdct lsp sinewin"
1863 utvideo_decoder_select="dsputil"
1864 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
1865 vble_decoder_select="huffyuvdsp"
1866 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
1867 vc1image_decoder_select="vc1_decoder"
1868 vorbis_decoder_select="mdct"
1869 vorbis_encoder_select="mdct"
1870 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1871 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1872 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1873 vp6a_decoder_select="vp6_decoder"
1874 vp6f_decoder_select="vp6_decoder"
1875 vp7_decoder_select="h264pred videodsp"
1876 vp8_decoder_select="h264pred videodsp"
1877 vp9_decoder_select="videodsp"
1878 webp_decoder_select="vp8_decoder"
1879 wmapro_decoder_select="mdct sinewin"
1880 wmav1_decoder_select="mdct sinewin"
1881 wmav1_encoder_select="mdct sinewin"
1882 wmav2_decoder_select="mdct sinewin"
1883 wmav2_encoder_select="mdct sinewin"
1884 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1885 wmv1_decoder_select="h263_decoder"
1886 wmv1_encoder_select="h263_encoder"
1887 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
1888 wmv2_encoder_select="h263_encoder"
1889 wmv3_decoder_select="vc1_decoder"
1890 wmv3image_decoder_select="wmv3_decoder"
1891 zerocodec_decoder_deps="zlib"
1892 zlib_decoder_deps="zlib"
1893 zlib_encoder_deps="zlib"
1894 zmbv_decoder_deps="zlib"
1895 zmbv_encoder_deps="zlib"
1896
1897 # hardware accelerators
1898 dxva2_deps="dxva2api_h"
1899 vaapi_deps="va_va_h"
1900 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1901 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1902 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1903
1904 h263_vaapi_hwaccel_deps="vaapi"
1905 h263_vaapi_hwaccel_select="h263_decoder"
1906 h263_vdpau_hwaccel_deps="vdpau"
1907 h263_vdpau_hwaccel_select="h263_decoder"
1908 h264_dxva2_hwaccel_deps="dxva2"
1909 h264_dxva2_hwaccel_select="h264_decoder"
1910 h264_vaapi_hwaccel_deps="vaapi"
1911 h264_vaapi_hwaccel_select="h264_decoder"
1912 h264_vda_hwaccel_deps="vda"
1913 h264_vda_hwaccel_select="h264_decoder"
1914 h264_vda_old_hwaccel_deps="vda"
1915 h264_vda_old_hwaccel_select="h264_decoder"
1916 h264_vdpau_hwaccel_deps="vdpau"
1917 h264_vdpau_hwaccel_select="h264_decoder"
1918 mpeg1_vdpau_hwaccel_deps="vdpau"
1919 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1920 mpeg2_dxva2_hwaccel_deps="dxva2"
1921 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1922 mpeg2_vaapi_hwaccel_deps="vaapi"
1923 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1924 mpeg2_vdpau_hwaccel_deps="vdpau"
1925 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1926 mpeg4_vaapi_hwaccel_deps="vaapi"
1927 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1928 mpeg4_vdpau_hwaccel_deps="vdpau"
1929 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1930 vc1_dxva2_hwaccel_deps="dxva2"
1931 vc1_dxva2_hwaccel_select="vc1_decoder"
1932 vc1_vaapi_hwaccel_deps="vaapi"
1933 vc1_vaapi_hwaccel_select="vc1_decoder"
1934 vc1_vdpau_hwaccel_deps="vdpau"
1935 vc1_vdpau_hwaccel_select="vc1_decoder"
1936 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1937 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1938 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1939
1940 # parsers
1941 h264_parser_select="h264_decoder"
1942 mpegvideo_parser_select="error_resilience mpegvideo"
1943 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
1944 vc1_parser_select="mpegvideo"
1945
1946 # external libraries
1947 libfaac_encoder_deps="libfaac"
1948 libfaac_encoder_select="audio_frame_queue"
1949 libfdk_aac_decoder_deps="libfdk_aac"
1950 libfdk_aac_encoder_deps="libfdk_aac"
1951 libfdk_aac_encoder_select="audio_frame_queue"
1952 libgsm_decoder_deps="libgsm"
1953 libgsm_encoder_deps="libgsm"
1954 libgsm_ms_decoder_deps="libgsm"
1955 libgsm_ms_encoder_deps="libgsm"
1956 libilbc_decoder_deps="libilbc"
1957 libilbc_encoder_deps="libilbc"
1958 libmp3lame_encoder_deps="libmp3lame"
1959 libmp3lame_encoder_select="audio_frame_queue"
1960 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1961 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1962 libopencore_amrnb_encoder_select="audio_frame_queue"
1963 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1964 libopenjpeg_decoder_deps="libopenjpeg"
1965 libopenjpeg_encoder_deps="libopenjpeg"
1966 libopus_decoder_deps="libopus"
1967 libopus_encoder_deps="libopus"
1968 libopus_encoder_select="audio_frame_queue"
1969 libschroedinger_decoder_deps="libschroedinger"
1970 libschroedinger_encoder_deps="libschroedinger"
1971 libspeex_decoder_deps="libspeex"
1972 libspeex_encoder_deps="libspeex"
1973 libspeex_encoder_select="audio_frame_queue"
1974 libtheora_encoder_deps="libtheora"
1975 libtwolame_encoder_deps="libtwolame"
1976 libvo_aacenc_encoder_deps="libvo_aacenc"
1977 libvo_aacenc_encoder_select="audio_frame_queue"
1978 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1979 libvorbis_encoder_deps="libvorbis"
1980 libvorbis_encoder_select="audio_frame_queue"
1981 libvpx_vp8_decoder_deps="libvpx"
1982 libvpx_vp8_encoder_deps="libvpx"
1983 libvpx_vp9_decoder_deps="libvpx"
1984 libvpx_vp9_encoder_deps="libvpx"
1985 libwavpack_encoder_deps="libwavpack"
1986 libwebp_encoder_deps="libwebp"
1987 libx264_encoder_deps="libx264"
1988 libx265_encoder_deps="libx265"
1989 libxavs_encoder_deps="libxavs"
1990 libxvid_encoder_deps="libxvid"
1991
1992 # demuxers / muxers
1993 ac3_demuxer_select="ac3_parser"
1994 asf_demuxer_select="riffdec"
1995 asf_muxer_select="riffenc"
1996 asf_stream_muxer_select="asf_muxer"
1997 avi_demuxer_select="riffdec"
1998 avi_muxer_select="riffenc"
1999 avisynth_demuxer_deps="avisynth"
2000 avisynth_demuxer_select="riffdec"
2001 caf_demuxer_select="riffdec"
2002 dirac_demuxer_select="dirac_parser"
2003 dxa_demuxer_select="riffdec"
2004 eac3_demuxer_select="ac3_parser"
2005 f4v_muxer_select="mov_muxer"
2006 flac_demuxer_select="flac_parser"
2007 hds_muxer_select="flv_muxer"
2008 hls_muxer_select="mpegts_muxer"
2009 ipod_muxer_select="mov_muxer"
2010 ismv_muxer_select="mov_muxer"
2011 matroska_audio_muxer_select="matroska_muxer"
2012 matroska_demuxer_select="riffdec"
2013 matroska_demuxer_suggest="bzlib lzo zlib"
2014 matroska_muxer_select="riffenc"
2015 mmf_muxer_select="riffenc"
2016 mov_demuxer_select="riffdec"
2017 mov_demuxer_suggest="zlib"
2018 mov_muxer_select="riffenc rtpenc_chain"
2019 mp3_demuxer_select="mpegaudio_parser"
2020 mp4_muxer_select="mov_muxer"
2021 mpegts_muxer_select="adts_muxer latm_muxer"
2022 mpegtsraw_demuxer_select="mpegts_demuxer"
2023 mxf_d10_muxer_select="mxf_muxer"
2024 nut_muxer_select="riffenc"
2025 nuv_demuxer_select="riffdec"
2026 ogg_demuxer_select="golomb"
2027 psp_muxer_select="mov_muxer"
2028 rtp_demuxer_select="sdp_demuxer"
2029 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2030 rtsp_demuxer_select="http_protocol rtpdec"
2031 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2032 sap_demuxer_select="sdp_demuxer"
2033 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2034 sdp_demuxer_select="rtpdec"
2035 smoothstreaming_muxer_select="ismv_muxer"
2036 spdif_muxer_select="aac_parser"
2037 tak_demuxer_select="tak_parser"
2038 tg2_muxer_select="mov_muxer"
2039 tgp_muxer_select="mov_muxer"
2040 w64_demuxer_select="wav_demuxer"
2041 wav_demuxer_select="riffdec"
2042 wav_muxer_select="riffenc"
2043 webm_muxer_select="riffenc"
2044 wtv_demuxer_select="riffdec"
2045 xmv_demuxer_select="riffdec"
2046 xwma_demuxer_select="riffdec"
2047
2048 # indevs / outdevs
2049 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2050 alsa_outdev_deps="alsa_asoundlib_h"
2051 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2052 dv1394_indev_deps="dv1394"
2053 dv1394_indev_select="dv_demuxer"
2054 fbdev_indev_deps="linux_fb_h"
2055 jack_indev_deps="jack_jack_h pthreads"
2056 libcdio_indev_deps="libcdio"
2057 libdc1394_indev_deps="libdc1394"
2058 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2059 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2060 pulse_indev_deps="libpulse"
2061 sndio_indev_deps="sndio_h"
2062 sndio_outdev_deps="sndio_h"
2063 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2064 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2065 vfwcap_indev_extralibs="-lavicap32"
2066 x11grab_indev_deps="x11grab XShmCreateImage"
2067
2068 # protocols
2069 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2070 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2071 ffrtmpcrypt_protocol_select="tcp_protocol"
2072 ffrtmphttp_protocol_deps="!librtmp_protocol"
2073 ffrtmphttp_protocol_select="http_protocol"
2074 gopher_protocol_select="network"
2075 http_protocol_select="tcp_protocol"
2076 httpproxy_protocol_select="tcp_protocol"
2077 https_protocol_select="tls_protocol"
2078 librtmp_protocol_deps="librtmp"
2079 librtmpe_protocol_deps="librtmp"
2080 librtmps_protocol_deps="librtmp"
2081 librtmpt_protocol_deps="librtmp"
2082 librtmpte_protocol_deps="librtmp"
2083 mmsh_protocol_select="http_protocol"
2084 mmst_protocol_select="network"
2085 rtmp_protocol_deps="!librtmp_protocol"
2086 rtmp_protocol_select="tcp_protocol"
2087 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2088 rtmps_protocol_deps="!librtmp_protocol"
2089 rtmps_protocol_select="tls_protocol"
2090 rtmpt_protocol_select="ffrtmphttp_protocol"
2091 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2092 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2093 rtp_protocol_select="udp_protocol"
2094 sctp_protocol_deps="struct_sctp_event_subscribe"
2095 sctp_protocol_select="network"
2096 srtp_protocol_select="rtp_protocol"
2097 tcp_protocol_select="network"
2098 tls_protocol_deps_any="openssl gnutls"
2099 tls_protocol_select="tcp_protocol"
2100 udp_protocol_select="network"
2101 unix_protocol_deps="sys_un_h"
2102 unix_protocol_select="network"
2103
2104 # filters
2105 blackframe_filter_deps="gpl"
2106 boxblur_filter_deps="gpl"
2107 bs2b_filter_deps="libbs2b"
2108 cropdetect_filter_deps="gpl"
2109 delogo_filter_deps="gpl"
2110 drawtext_filter_deps="libfreetype"
2111 frei0r_filter_deps="frei0r dlopen"
2112 frei0r_filter_extralibs='$ldl'
2113 frei0r_src_filter_deps="frei0r dlopen"
2114 frei0r_src_filter_extralibs='$ldl'
2115 hqdn3d_filter_deps="gpl"
2116 interlace_filter_deps="gpl"
2117 ocv_filter_deps="libopencv"
2118 resample_filter_deps="avresample"
2119 scale_filter_deps="swscale"
2120
2121 # examples
2122 avcodec_example_deps="avcodec avutil"
2123 filter_audio_example_deps="avfilter avutil"
2124 metadata_example_deps="avformat avutil"
2125 output_example_deps="avcodec avformat avutil swscale"
2126 transcode_aac_example_deps="avcodec avformat avresample"
2127
2128 # libraries, in linking order
2129 avcodec_deps="avutil"
2130 avdevice_deps="avformat avcodec avutil"
2131 avfilter_deps="avutil"
2132 avformat_deps="avcodec avutil"
2133 avresample_deps="avutil"
2134 swscale_deps="avutil"
2135
2136 # programs
2137 avconv_deps="avcodec avfilter avformat avresample swscale"
2138 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2139                fps_filter null_filter resample_filter scale_filter
2140                setpts_filter trim_filter"
2141 avplay_deps="avcodec avformat avresample swscale sdl"
2142 avplay_libs='$sdl_libs'
2143 avplay_select="rdft"
2144 avprobe_deps="avcodec avformat"
2145
2146 # documentation
2147 pod2man_deps="doc"
2148 texi2html_deps="doc"
2149
2150 # default parameters
2151
2152 logfile="config.log"
2153
2154 # installation paths
2155 prefix_default="/usr/local"
2156 bindir_default='${prefix}/bin'
2157 datadir_default='${prefix}/share/avconv'
2158 docdir_default='${prefix}/share/doc/libav'
2159 incdir_default='${prefix}/include'
2160 libdir_default='${prefix}/lib'
2161 mandir_default='${prefix}/share/man'
2162 shlibdir_default="$libdir_default"
2163
2164 # toolchain
2165 ar_default="ar"
2166 cc_default="gcc"
2167 host_cc_default="gcc"
2168 cp_f="cp -f"
2169 ln_s="ln -s -f"
2170 nm_default="nm -g"
2171 objformat="elf"
2172 pkg_config_default=pkg-config
2173 ranlib="ranlib"
2174 strip="strip"
2175 yasmexe="yasm"
2176
2177 nogas=":"
2178
2179 # machine
2180 arch_default=$(uname -m)
2181 cpu="generic"
2182
2183 # OS
2184 target_os_default=$(tolower $(uname -s))
2185 host_os=$target_os_default
2186
2187 # configurable options
2188 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2189
2190 enable asm
2191 enable debug
2192 enable doc
2193 enable optimizations
2194 enable safe_bitstream_reader
2195 enable static
2196 enable swscale_alpha
2197
2198 # By default, enable only those hwaccels that have no external dependencies.
2199 enable dxva2 vdpau
2200
2201 # build settings
2202 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2203 LIBPREF="lib"
2204 LIBSUF=".a"
2205 FULLNAME='$(NAME)$(BUILDSUF)'
2206 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2207 SLIBPREF="lib"
2208 SLIBSUF=".so"
2209 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2210 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2211 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2212 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2213 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2214 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2215
2216 asflags_filter=echo
2217 cflags_filter=echo
2218 ldflags_filter=echo
2219
2220 AS_C='-c'
2221 AS_O='-o $@'
2222 CC_C='-c'
2223 CC_E='-E -o $@'
2224 CC_O='-o $@'
2225 LD_O='-o $@'
2226 LD_LIB='-l%'
2227 LD_PATH='-L'
2228 HOSTCC_C='-c'
2229 HOSTCC_E='-E -o $@'
2230 HOSTCC_O='-o $@'
2231 HOSTLD_O='-o $@'
2232
2233 host_libs='-lm'
2234 host_cflags_filter=echo
2235 host_ldflags_filter=echo
2236
2237 target_path='$(CURDIR)'
2238
2239 # since the object filename is not given with the -MM flag, the compiler
2240 # is only able to print the basename, and we must add the path ourselves
2241 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2242 DEPFLAGS='-MM'
2243
2244 # find source path
2245 if test -f configure; then
2246     source_path=.
2247 else
2248     source_path=$(cd $(dirname "$0"); pwd)
2249     echo "$source_path" | grep -q '[[:blank:]]' &&
2250         die "Out of tree builds are impossible with whitespace in source path."
2251     test -e "$source_path/config.h" &&
2252         die "Out of tree builds are impossible with config.h in source dir."
2253 fi
2254
2255 for v in "$@"; do
2256     r=${v#*=}
2257     l=${v%"$r"}
2258     r=$(sh_quote "$r")
2259     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2260 done
2261
2262 find_things(){
2263     thing=$1
2264     pattern=$2
2265     file=$source_path/$3
2266     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2267 }
2268
2269 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2270 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2271 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2272 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2273 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2274 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2275 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2276 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2277 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2278 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2279 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2280
2281 ALL_COMPONENTS="
2282     $BSF_LIST
2283     $DECODER_LIST
2284     $DEMUXER_LIST
2285     $ENCODER_LIST
2286     $FILTER_LIST
2287     $HWACCEL_LIST
2288     $INDEV_LIST
2289     $MUXER_LIST
2290     $OUTDEV_LIST
2291     $PARSER_LIST
2292     $PROTOCOL_LIST
2293 "
2294
2295 for n in $COMPONENT_LIST; do
2296     v=$(toupper ${n%s})_LIST
2297     eval enable \$$v
2298     eval ${n}_if_any="\$$v"
2299 done
2300
2301 enable $ARCH_EXT_LIST
2302
2303 die_unknown(){
2304     echo "Unknown option \"$1\"."
2305     echo "See $0 --help for available options."
2306     exit 1
2307 }
2308
2309 print_3_columns() {
2310     cat | tr ' ' '\n' | sort | pr -r -3 -t
2311 }
2312
2313 show_list() {
2314     suffix=_$1
2315     shift
2316     echo $* | sed s/$suffix//g | print_3_columns
2317     exit 0
2318 }
2319
2320 rand_list(){
2321     IFS=', '
2322     set -- $*
2323     unset IFS
2324     for thing; do
2325         comp=${thing%:*}
2326         prob=${thing#$comp}
2327         prob=${prob#:}
2328         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2329         echo "prob ${prob:-0.5}"
2330         printf '%s\n' $comp
2331     done
2332 }
2333
2334 do_random(){
2335     action=$1
2336     shift
2337     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2338     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2339 }
2340
2341 for opt do
2342     optval="${opt#*=}"
2343     case "$opt" in
2344         --extra-ldflags=*)
2345             add_ldflags $optval
2346         ;;
2347         --extra-libs=*)
2348             add_extralibs $optval
2349         ;;
2350         --disable-devices)
2351             disable $INDEV_LIST $OUTDEV_LIST
2352         ;;
2353         --enable-debug=*)
2354             debuglevel="$optval"
2355         ;;
2356         --disable-programs)
2357             disable $PROGRAM_LIST
2358         ;;
2359         --disable-everything)
2360             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2361         ;;
2362         --disable-all)
2363             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2364             disable $LIBRARY_LIST $PROGRAM_LIST doc
2365         ;;
2366         --enable-random|--disable-random)
2367             action=${opt%%-random}
2368             do_random ${action#--} $COMPONENT_LIST
2369         ;;
2370         --enable-random=*|--disable-random=*)
2371             action=${opt%%-random=*}
2372             do_random ${action#--} $optval
2373         ;;
2374         --enable-*=*|--disable-*=*)
2375             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2376             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2377             eval list=\$$(toupper $thing)_LIST
2378             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2379             $action $(filter "$name" $list)
2380         ;;
2381         --enable-avserver|--disable-avserver*)
2382             warn "avserver has been removed, the ${opt} option is only"\
2383                  "provided for compatibility and will be removed in the future"
2384         ;;
2385         --enable-?*|--disable-?*)
2386             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2387             if is_in $option $COMPONENT_LIST; then
2388                 test $action = disable && action=unset
2389                 eval $action \$$(toupper ${option%s})_LIST
2390             elif is_in $option $CMDLINE_SELECT; then
2391                 $action $option
2392             else
2393                 die_unknown $opt
2394             fi
2395         ;;
2396         --list-*)
2397             NAME="${opt#--list-}"
2398             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2399             NAME=${NAME%s}
2400             eval show_list $NAME \$$(toupper $NAME)_LIST
2401         ;;
2402         --help|-h) show_help
2403         ;;
2404         *)
2405             optname="${opt%%=*}"
2406             optname="${optname#--}"
2407             optname=$(echo "$optname" | sed 's/-/_/g')
2408             if is_in $optname $CMDLINE_SET; then
2409                 eval $optname='$optval'
2410             elif is_in $optname $CMDLINE_APPEND; then
2411                 append $optname "$optval"
2412             else
2413                 die_unknown $opt
2414             fi
2415         ;;
2416     esac
2417 done
2418
2419 disabled logging && logfile=/dev/null
2420
2421 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2422 set >> $logfile
2423
2424 test -n "$cross_prefix" && enable cross_compile
2425
2426 if enabled cross_compile; then
2427     test -n "$arch" && test -n "$target_os" ||
2428         die "Must specify target arch and OS when cross-compiling"
2429 fi
2430
2431 ar_default="${cross_prefix}${ar_default}"
2432 cc_default="${cross_prefix}${cc_default}"
2433 nm_default="${cross_prefix}${nm_default}"
2434 pkg_config_default="${cross_prefix}${pkg_config_default}"
2435 ranlib="${cross_prefix}${ranlib}"
2436 strip="${cross_prefix}${strip}"
2437
2438 sysinclude_default="${sysroot}/usr/include"
2439
2440 case "$toolchain" in
2441     clang-asan)
2442         cc_default="clang"
2443         add_cflags  -fsanitize=address
2444         add_ldflags -fsanitize=address
2445     ;;
2446     clang-tsan)
2447         cc_default="clang"
2448         add_cflags  -fsanitize=thread -pie
2449         add_ldflags -fsanitize=thread -pie
2450     ;;
2451     clang-usan)
2452         cc_default="clang"
2453         add_cflags  -fsanitize=undefined -O1
2454         add_ldflags -fsanitize=undefined
2455     ;;
2456     gcc-asan)
2457         cc_default="gcc"
2458         add_cflags  -fsanitize=address
2459         add_ldflags -fsanitize=address
2460     ;;
2461     gcc-tsan)
2462         cc_default="gcc"
2463         add_cflags  -fsanitize=thread -pie -fPIC
2464         add_ldflags -fsanitize=thread -pie -fPIC
2465     ;;
2466     gcc-usan)
2467         cc_default="gcc"
2468         add_cflags  -fsanitize=undefined
2469         add_ldflags -fsanitize=undefined
2470     ;;
2471     valgrind-massif)
2472         target_exec_default="valgrind"
2473         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2474     ;;
2475     valgrind-memcheck)
2476         target_exec_default="valgrind"
2477         target_exec_args="--track-origins=yes --leak-check=full"
2478     ;;
2479     msvc)
2480         # Check whether the current MSVC version needs the C99 converter.
2481         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2482         # support enough of C99 to build libav. Default to the new
2483         # behaviour if the regexp was unable to match anything, since this
2484         # successfully parses the version number of existing supported
2485         # versions that require the converter (MSVC 2010 and 2012).
2486         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2487         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2488             cc_default="cl"
2489         else
2490             cc_default="c99wrap cl"
2491         fi
2492         ld_default="link"
2493         nm_default="dumpbin -symbols"
2494         ar_default="lib"
2495         target_os_default="win32"
2496         # Use a relative path for TMPDIR. This makes sure all the
2497         # ffconf temp files are written with a relative path, avoiding
2498         # issues with msys/win32 path conversion for MSVC parameters
2499         # such as -Fo<file> or -out:<file>.
2500         TMPDIR=.
2501     ;;
2502     icl)
2503         cc_default="icl"
2504         ld_default="xilink"
2505         nm_default="dumpbin -symbols"
2506         ar_default="xilib"
2507         target_os_default="win32"
2508         TMPDIR=.
2509     ;;
2510     gcov)
2511         add_cflags  -fprofile-arcs -ftest-coverage
2512         add_ldflags -fprofile-arcs -ftest-coverage
2513     ;;
2514     hardened)
2515         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2516         add_ldflags -Wl,-z,relro -Wl,-z,now
2517     ;;
2518     ?*)
2519         die "Unknown toolchain $toolchain"
2520     ;;
2521 esac
2522
2523 set_default arch cc pkg_config sysinclude target_exec target_os
2524 enabled cross_compile || host_cc_default=$cc
2525 set_default host_cc
2526
2527 if ! $pkg_config --version >/dev/null 2>&1; then
2528     warn "$pkg_config not found, library detection may fail."
2529     pkg_config=false
2530 fi
2531
2532 exesuf() {
2533     case $1 in
2534         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2535     esac
2536 }
2537
2538 EXESUF=$(exesuf $target_os)
2539 HOSTEXESUF=$(exesuf $host_os)
2540
2541 # set temporary file name
2542 : ${TMPDIR:=$TEMPDIR}
2543 : ${TMPDIR:=$TMP}
2544 : ${TMPDIR:=/tmp}
2545
2546 if ! check_cmd mktemp -u XXXXXX; then
2547     # simple replacement for missing mktemp
2548     # NOT SAFE FOR GENERAL USE
2549     mktemp(){
2550         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2551     }
2552 fi
2553
2554 tmpfile(){
2555     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2556         (set -C; exec > $tmp) 2>/dev/null ||
2557         die "Unable to create temporary file in $TMPDIR."
2558     append TMPFILES $tmp
2559     eval $1=$tmp
2560 }
2561
2562 trap 'rm -f -- $TMPFILES' EXIT
2563
2564 tmpfile TMPASM .asm
2565 tmpfile TMPC   .c
2566 tmpfile TMPE   $EXESUF
2567 tmpfile TMPH   .h
2568 tmpfile TMPO   .o
2569 tmpfile TMPS   .S
2570 tmpfile TMPSH  .sh
2571 tmpfile TMPV   .ver
2572
2573 unset -f mktemp
2574
2575 chmod +x $TMPE
2576
2577 # make sure we can execute files in $TMPDIR
2578 cat > $TMPSH 2>> $logfile <<EOF
2579 #! /bin/sh
2580 EOF
2581 chmod +x $TMPSH >> $logfile 2>&1
2582 if ! $TMPSH >> $logfile 2>&1; then
2583     cat <<EOF
2584 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2585 variable to another directory and make sure that it is not mounted noexec.
2586 EOF
2587     die "Sanity test failed."
2588 fi
2589
2590 ccc_flags(){
2591     for flag; do
2592         case $flag in
2593             -std=c99)           echo -c99                       ;;
2594             -mcpu=*)            echo -arch ${flag#*=}           ;;
2595             -mieee)             echo -ieee                      ;;
2596             -O*|-fast)          echo $flag                      ;;
2597             -fno-math-errno)    echo -assume nomath_errno       ;;
2598             -g)                 echo -g3                        ;;
2599             -Wall)              echo -msg_enable level2         ;;
2600             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2601             -Wl,*)              echo $flag                      ;;
2602             -f*|-W*)                                            ;;
2603             *)                  echo $flag                      ;;
2604         esac
2605    done
2606 }
2607
2608 cparser_flags(){
2609     for flag; do
2610         case $flag in
2611             -Wno-switch)             echo -Wno-switch-enum ;;
2612             -Wno-format-zero-length) ;;
2613             -Wdisabled-optimization) ;;
2614             -Wno-pointer-sign)       echo -Wno-other ;;
2615             *)                       echo $flag ;;
2616         esac
2617     done
2618 }
2619
2620 msvc_common_flags(){
2621     for flag; do
2622         case $flag in
2623             # In addition to specifying certain flags under the compiler
2624             # specific filters, they must be specified here as well or else the
2625             # generic catch all at the bottom will print the original flag.
2626             -Wall)                ;;
2627             -std=c99)             ;;
2628             # Common flags
2629             -fomit-frame-pointer) ;;
2630             -g)                   echo -Z7 ;;
2631             -fno-math-errno)      ;;
2632             -fno-common)          ;;
2633             -fno-signed-zeros)    ;;
2634             -fPIC)                ;;
2635             -mthumb)              ;;
2636             -march=*)             ;;
2637             -lz)                  echo zlib.lib ;;
2638             -lavifil32)           echo vfw32.lib ;;
2639             -lavicap32)           echo vfw32.lib user32.lib ;;
2640             -l*)                  echo ${flag#-l}.lib ;;
2641             *)                    echo $flag ;;
2642         esac
2643     done
2644 }
2645
2646 msvc_flags(){
2647     msvc_common_flags "$@"
2648     for flag; do
2649         case $flag in
2650             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2651                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2652                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2653                                        -wd4273 ;;
2654         esac
2655     done
2656 }
2657
2658 icl_flags(){
2659     msvc_common_flags "$@"
2660     for flag; do
2661         case $flag in
2662             # Despite what Intel's documentation says -Wall, which is supported
2663             # on Windows, does enable remarks so disable them here.
2664             -Wall)                echo $flag -Qdiag-disable:remark ;;
2665             -std=c99)             echo -Qstd=c99 ;;
2666         esac
2667     done
2668 }
2669
2670 pgi_flags(){
2671     for flag; do
2672         case $flag in
2673             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2674             -fomit-frame-pointer) echo -Mnoframe ;;
2675             -g)                   echo -gopt ;;
2676             *)                    echo $flag ;;
2677         esac
2678     done
2679 }
2680
2681 suncc_flags(){
2682     for flag; do
2683         case $flag in
2684             -march=*|-mcpu=*)
2685                 case "${flag#*=}" in
2686                     native)                   echo -xtarget=native       ;;
2687                     v9|niagara)               echo -xarch=sparc          ;;
2688                     ultrasparc)               echo -xarch=sparcvis       ;;
2689                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2690                     i586|pentium)             echo -xchip=pentium        ;;
2691                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2692                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2693                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2694                     pentium4*)          echo -xtarget=pentium4           ;;
2695                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2696                     *-sse3)             echo -xarch=sse3                 ;;
2697                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2698                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2699                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2700                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2701                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2702                     k8|opteron|athlon64|athlon-fx)
2703                                                echo -xarch=sse2a         ;;
2704                     athlon*)                   echo -xarch=pentium_proa  ;;
2705                 esac
2706                 ;;
2707             -std=c99)             echo -xc99              ;;
2708             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2709             -fPIC)                echo -KPIC -xcode=pic32 ;;
2710             -W*,*)                echo $flag              ;;
2711             -f*-*|-W*|-mimpure-text)                      ;;
2712             -shared)              echo -G                 ;;
2713             *)                    echo $flag              ;;
2714         esac
2715     done
2716 }
2717
2718 tms470_flags(){
2719     for flag; do
2720         case $flag in
2721             -march=*|-mcpu=*)
2722                 case "${flag#*=}" in
2723                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2724                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2725                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2726                     armv6*|arm11*)          echo -mv=6   ;;
2727                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2728                                             echo -mv=5e  ;;
2729                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2730                 esac
2731                 ;;
2732             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2733             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2734             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2735             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2736             -msoft-float)   echo --float_support=vfplib       ;;
2737             -O[0-3]|-mf=*)  echo $flag                        ;;
2738             -g)             echo -g -mn                       ;;
2739             -pds=*)         echo $flag                        ;;
2740             -D*|-I*)        echo $flag                        ;;
2741             --gcc|--abi=*)  echo $flag                        ;;
2742             -me)            echo $flag                        ;;
2743         esac
2744     done
2745 }
2746
2747 probe_cc(){
2748     pfx=$1
2749     _cc=$2
2750
2751     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2752     unset _ld_o _ldflags _ld_lib _ld_path
2753     unset _depflags _DEPCMD _DEPFLAGS
2754     _flags_filter=echo
2755
2756     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2757         _type=llvm_gcc
2758         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2759         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2760         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2761         _cflags_speed='-O3'
2762         _cflags_size='-Os'
2763     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2764         _type=gcc
2765         gcc_version=$($_cc --version | head -n1)
2766         gcc_basever=$($_cc -dumpversion)
2767         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2768         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2769         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2770         if ! $_cc -dumpversion | grep -q '^2\.'; then
2771             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2772         fi
2773         _cflags_speed='-O3'
2774         _cflags_size='-Os'
2775     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2776         _type=icc
2777         _ident=$($_cc --version | head -n1)
2778         _depflags='-MMD'
2779         _cflags_speed='-O3'
2780         _cflags_size='-Os'
2781         _cflags_noopt='-O1'
2782     elif $_cc -v 2>&1 | grep -q xlc; then
2783         _type=xlc
2784         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2785         _cflags_speed='-O5'
2786         _cflags_size='-O5 -qcompact'
2787     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2788         _type=ccc
2789         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2790         _DEPFLAGS='-M'
2791         _cflags_speed='-fast'
2792         _cflags_size='-O1'
2793         _flags_filter=ccc_flags
2794     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2795         test -d "$sysroot" || die "No valid sysroot specified."
2796         _type=armcc
2797         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2798         armcc_conf="$PWD/armcc.conf"
2799         $_cc --arm_linux_configure                 \
2800              --arm_linux_config_file="$armcc_conf" \
2801              --configure_sysroot="$sysroot"        \
2802              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2803              die "Error creating armcc configuration file."
2804         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2805         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2806         as_default="${cross_prefix}gcc"
2807         _depflags='-MMD'
2808         _cflags_speed='-O3'
2809         _cflags_size='-Os'
2810     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2811         _type=tms470
2812         _ident=$($_cc -version | head -n1 | tr -s ' ')
2813         _flags='--gcc --abi=eabi -me'
2814         _cc_e='-ppl -fe=$@'
2815         _cc_o='-fe=$@'
2816         _depflags='-ppa -ppd=$(@:.o=.d)'
2817         _cflags_speed='-O3 -mf=5'
2818         _cflags_size='-O3 -mf=2'
2819         _flags_filter=tms470_flags
2820     elif $_cc -v 2>&1 | grep -q clang; then
2821         _type=clang
2822         _ident=$($_cc --version | head -n1)
2823         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2824         _cflags_speed='-O3'
2825         _cflags_size='-Os'
2826     elif $_cc -V 2>&1 | grep -q Sun; then
2827         _type=suncc
2828         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2829         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2830         _DEPFLAGS='-xM1 -xc99'
2831         _ldflags='-std=c99'
2832         _cflags_speed='-O5'
2833         _cflags_size='-O5 -xspace'
2834         _flags_filter=suncc_flags
2835     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2836         _type=pathscale
2837         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2838         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2839         _cflags_speed='-O2'
2840         _cflags_size='-Os'
2841         _flags_filter='filter_out -Wdisabled-optimization'
2842     elif $_cc -v 2>&1 | grep -q Open64; then
2843         _type=open64
2844         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2845         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2846         _cflags_speed='-O2'
2847         _cflags_size='-Os'
2848         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2849     elif $_cc -V 2>&1 | grep -q Portland; then
2850         _type=pgi
2851         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2852         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2853         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2854         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2855         _cflags_noopt="-O1"
2856         _flags_filter=pgi_flags
2857     elif $_cc 2>&1 | grep -q Microsoft; then
2858         _type=msvc
2859         _ident=$($cc 2>&1 | head -n1)
2860         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2861         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2862         _cflags_speed="-O2"
2863         _cflags_size="-O1"
2864         if $_cc 2>&1 | grep -q Linker; then
2865             _ld_o='-out:$@'
2866         else
2867             _ld_o='-Fe$@'
2868         fi
2869         _cc_o='-Fo$@'
2870         _cc_e='-P -Fi$@'
2871         _flags_filter=msvc_flags
2872         _ld_lib='lib%.a'
2873         _ld_path='-libpath:'
2874         _flags='-nologo'
2875         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2876         if [ $pfx = hostcc ]; then
2877             append _cflags -Dsnprintf=_snprintf
2878         fi
2879     elif $_cc 2>&1 | grep -q Intel; then
2880         _type=icl
2881         _ident=$($cc 2>&1 | head -n1)
2882         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2883         # Not only is O3 broken on 13.x+ but it is slower on all previous
2884         # versions (tested) as well.
2885         _cflags_speed="-O2"
2886         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2887         if $_cc 2>&1 | grep -q Linker; then
2888             _ld_o='-out:$@'
2889         else
2890             _ld_o='-Fe$@'
2891         fi
2892         _cc_o='-Fo$@'
2893         _cc_e='-P'
2894         _flags_filter=icl_flags
2895         _ld_lib='lib%.a'
2896         _ld_path='-libpath:'
2897         # -Qdiag-error to make icl error when seeing certain unknown arguments
2898         _flags='-nologo -Qdiag-error:4044,10157'
2899         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2900         # with MSVC which enables it by default.
2901         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2902         if [ $pfx = hostcc ]; then
2903             append _cflags -Dsnprintf=_snprintf
2904         fi
2905     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2906         _type=cparser
2907         _ident=$($_cc --version | head -n1)
2908         _depflags='-MMD'
2909         _cflags_speed='-O4'
2910         _cflags_size='-O2'
2911         _flags_filter=cparser_flags
2912     fi
2913
2914     eval ${pfx}_type=\$_type
2915     eval ${pfx}_ident=\$_ident
2916 }
2917
2918 set_ccvars(){
2919     eval ${1}_C=\${_cc_c-\${${1}_C}}
2920     eval ${1}_E=\${_cc_e-\${${1}_E}}
2921     eval ${1}_O=\${_cc_o-\${${1}_O}}
2922
2923     if [ -n "$_depflags" ]; then
2924         eval ${1}_DEPFLAGS=\$_depflags
2925     else
2926         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2927         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2928         eval DEP${1}FLAGS=\$_flags
2929     fi
2930 }
2931
2932 probe_cc cc "$cc"
2933 cflags_filter=$_flags_filter
2934 cflags_speed=$_cflags_speed
2935 cflags_size=$_cflags_size
2936 cflags_noopt=$_cflags_noopt
2937 add_cflags $_flags $_cflags
2938 cc_ldflags=$_ldflags
2939 set_ccvars CC
2940
2941 probe_cc hostcc "$host_cc"
2942 host_cflags_filter=$_flags_filter
2943 add_host_cflags  $_flags $_cflags
2944 set_ccvars HOSTCC
2945
2946 test -n "$cc_type" && enable $cc_type ||
2947     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2948
2949 : ${as_default:=$cc}
2950 : ${dep_cc_default:=$cc}
2951 : ${ld_default:=$cc}
2952 : ${host_ld_default:=$host_cc}
2953 set_default ar as dep_cc ld host_ld
2954
2955 probe_cc as "$as"
2956 asflags_filter=$_flags_filter
2957 add_asflags $_flags $_cflags
2958 set_ccvars AS
2959
2960 probe_cc ld "$ld"
2961 ldflags_filter=$_flags_filter
2962 add_ldflags $_flags $_ldflags
2963 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2964 LD_O=${_ld_o-$LD_O}
2965 LD_LIB=${_ld_lib-$LD_LIB}
2966 LD_PATH=${_ld_path-$LD_PATH}
2967
2968 probe_cc hostld "$host_ld"
2969 host_ldflags_filter=$_flags_filter
2970 add_host_ldflags $_flags $_ldflags
2971 HOSTLD_O=${_ld_o-$HOSTLD_O}
2972
2973 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2974     probe_cc depcc "$dep_cc"
2975     CCDEP=${_DEPCMD:-$DEPCMD}
2976     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2977     DEPCCFLAGS=$_flags
2978 fi
2979
2980 if $ar 2>&1 | grep -q Microsoft; then
2981     arflags="-nologo"
2982     ar_o='-out:$@'
2983 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2984     arflags="rq"
2985     ar_o='$@'
2986 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2987     arflags='-Xany -r -c'
2988     ar_o='$@'
2989 else
2990     arflags="rc"
2991     ar_o='$@'
2992 fi
2993
2994 add_cflags $extra_cflags
2995 add_asflags $extra_cflags
2996
2997 if test -n "$sysroot"; then
2998     case "$cc_type" in
2999         gcc|llvm_gcc|clang)
3000             add_cppflags --sysroot="$sysroot"
3001             add_ldflags --sysroot="$sysroot"
3002         ;;
3003         tms470)
3004             add_cppflags -I"$sysinclude"
3005             add_ldflags  --sysroot="$sysroot"
3006         ;;
3007     esac
3008 fi
3009
3010 if test "$cpu" = host; then
3011     enabled cross_compile &&
3012         die "--cpu=host makes no sense when cross-compiling."
3013
3014     case "$cc_type" in
3015         gcc|llvm_gcc)
3016             check_native(){
3017                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3018                 sed -n "/cc1.*$1=/{
3019                             s/.*$1=\\([^ ]*\\).*/\\1/
3020                             p
3021                             q
3022                         }" $TMPE
3023             }
3024             cpu=$(check_native -march || check_native -mcpu)
3025         ;;
3026     esac
3027
3028     test "${cpu:-host}" = host &&
3029         die "--cpu=host not supported with compiler $cc"
3030 fi
3031
3032 # Deal with common $arch aliases
3033 case "$arch" in
3034     aarch64|arm64)
3035         arch="aarch64"
3036     ;;
3037     arm*)
3038         arch="arm"
3039     ;;
3040     mips*|IP*)
3041         arch="mips"
3042     ;;
3043     parisc*|hppa*)
3044         arch="parisc"
3045     ;;
3046     "Power Macintosh"|ppc*|powerpc*)
3047         arch="ppc"
3048     ;;
3049     s390|s390x)
3050         arch="s390"
3051     ;;
3052     sh4|sh)
3053         arch="sh4"
3054     ;;
3055     sun4u|sparc*)
3056         arch="sparc"
3057     ;;
3058     tilegx|tile-gx)
3059         arch="tilegx"
3060     ;;
3061     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3062         arch="x86"
3063     ;;
3064 esac
3065
3066 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3067 enable $arch
3068
3069 # Add processor-specific flags
3070 if enabled aarch64; then
3071
3072     case $cpu in
3073         armv*)
3074             cpuflags="-march=$cpu"
3075         ;;
3076         *)
3077             cpuflags="-mcpu=$cpu"
3078         ;;
3079     esac
3080
3081 elif enabled alpha; then
3082
3083     cpuflags="-mcpu=$cpu"
3084
3085 elif enabled arm; then
3086
3087     check_arm_arch() {
3088         check_cpp_condition stddef.h \
3089             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3090             $cpuflags
3091     }
3092
3093     probe_arm_arch() {
3094         if   check_arm_arch 4;        then echo armv4;
3095         elif check_arm_arch 4T;       then echo armv4t;
3096         elif check_arm_arch 5;        then echo armv5;
3097         elif check_arm_arch 5E;       then echo armv5e;
3098         elif check_arm_arch 5T;       then echo armv5t;
3099         elif check_arm_arch 5TE;      then echo armv5te;
3100         elif check_arm_arch 5TEJ;     then echo armv5te;
3101         elif check_arm_arch 6;        then echo armv6;
3102         elif check_arm_arch 6J;       then echo armv6j;
3103         elif check_arm_arch 6K;       then echo armv6k;
3104         elif check_arm_arch 6Z;       then echo armv6z;
3105         elif check_arm_arch 6ZK;      then echo armv6zk;
3106         elif check_arm_arch 6T2;      then echo armv6t2;
3107         elif check_arm_arch 7;        then echo armv7;
3108         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3109         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3110         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3111         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3112         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3113         fi
3114     }
3115
3116     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3117
3118     case $cpu in
3119         armv*)
3120             cpuflags="-march=$cpu"
3121             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3122         ;;
3123         *)
3124             cpuflags="-mcpu=$cpu"
3125             case $cpu in
3126                 cortex-a*)                               subarch=armv7a  ;;
3127                 cortex-r*)                               subarch=armv7r  ;;
3128                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3129                 arm11*)                                  subarch=armv6   ;;
3130                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3131                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3132                 *)                             subarch=$(probe_arm_arch) ;;
3133             esac
3134         ;;
3135     esac
3136
3137     case "$subarch" in
3138         armv5t*)    enable fast_clz                ;;
3139         armv[6-8]*) enable fast_clz fast_unaligned ;;
3140     esac
3141
3142 elif enabled avr32; then
3143
3144     case $cpu in
3145         ap7[02]0[0-2])
3146             subarch="avr32_ap"
3147             cpuflags="-mpart=$cpu"
3148         ;;
3149         ap)
3150             subarch="avr32_ap"
3151             cpuflags="-march=$cpu"
3152         ;;
3153         uc3[ab]*)
3154             subarch="avr32_uc"
3155             cpuflags="-mcpu=$cpu"
3156         ;;
3157         uc)
3158             subarch="avr32_uc"
3159             cpuflags="-march=$cpu"
3160         ;;
3161     esac
3162
3163 elif enabled bfin; then
3164
3165     cpuflags="-mcpu=$cpu"
3166
3167 elif enabled mips; then
3168
3169     cpuflags="-march=$cpu"
3170
3171 elif enabled ppc; then
3172
3173     disable ldbrx
3174
3175     case $(tolower $cpu) in
3176         601|ppc601|powerpc601)
3177             cpuflags="-mcpu=601"
3178             disable altivec
3179         ;;
3180         603*|ppc603*|powerpc603*)
3181             cpuflags="-mcpu=603"
3182             disable altivec
3183         ;;
3184         604*|ppc604*|powerpc604*)
3185             cpuflags="-mcpu=604"
3186             disable altivec
3187         ;;
3188         g3|75*|ppc75*|powerpc75*)
3189             cpuflags="-mcpu=750"
3190             disable altivec
3191         ;;
3192         g4|745*|ppc745*|powerpc745*)
3193             cpuflags="-mcpu=7450"
3194         ;;
3195         74*|ppc74*|powerpc74*)
3196             cpuflags="-mcpu=7400"
3197         ;;
3198         g5|970|ppc970|powerpc970)
3199             cpuflags="-mcpu=970"
3200         ;;
3201         power[3-7]*)
3202             cpuflags="-mcpu=$cpu"
3203         ;;
3204         cell)
3205             cpuflags="-mcpu=cell"
3206             enable ldbrx
3207         ;;
3208         e500mc)
3209             cpuflags="-mcpu=e500mc"
3210             disable altivec
3211         ;;
3212         e500v2)
3213             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3214             disable altivec
3215             disable dcbzl
3216         ;;
3217         e500)
3218             cpuflags="-mcpu=8540 -mhard-float"
3219             disable altivec
3220             disable dcbzl
3221         ;;
3222     esac
3223
3224 elif enabled sparc; then
3225
3226     case $cpu in
3227         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3228             cpuflags="-mcpu=$cpu"
3229         ;;
3230         ultrasparc*|niagara[234])
3231             cpuflags="-mcpu=$cpu"
3232         ;;
3233     esac
3234
3235 elif enabled x86; then
3236
3237     case $cpu in
3238         i[345]86|pentium)
3239             cpuflags="-march=$cpu"
3240             disable mmx
3241         ;;
3242         # targets that do NOT support nopl and conditional mov (cmov)
3243         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3244             cpuflags="-march=$cpu"
3245             disable i686
3246         ;;
3247         # targets that do support nopl and conditional mov (cmov)
3248         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3249             cpuflags="-march=$cpu"
3250             enable i686
3251             enable fast_cmov
3252         ;;
3253         # targets that do support conditional mov but on which it's slow
3254         pentium4|pentium4m|prescott|nocona)
3255             cpuflags="-march=$cpu"
3256             enable i686
3257             disable fast_cmov
3258         ;;
3259     esac
3260
3261 fi
3262
3263 if [ "$cpu" != generic ]; then
3264     add_cflags  $cpuflags
3265     add_asflags $cpuflags
3266 fi
3267
3268 # compiler sanity check
3269 check_exec <<EOF
3270 int main(void){ return 0; }
3271 EOF
3272 if test "$?" != 0; then
3273     echo "$cc is unable to create an executable file."
3274     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3275         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3276         echo "Only do this if you know what cross compiling means."
3277     fi
3278     die "C compiler test failed."
3279 fi
3280
3281 add_cppflags -D_ISOC99_SOURCE
3282 check_cflags -std=c99
3283 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3284 #include <stdlib.h>
3285 EOF
3286 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3287 #include <stdlib.h>
3288 EOF
3289
3290 add_host_cppflags -D_ISOC99_SOURCE
3291 check_host_cflags -std=c99
3292 check_host_cflags -Wall
3293 check_host_cflags -O3
3294
3295 check_64bit(){
3296     arch32=$1
3297     arch64=$2
3298     expr=$3
3299     check_code cc "" "int test[2*($expr) - 1]" &&
3300         subarch=$arch64 || subarch=$arch32
3301 }
3302
3303 case "$arch" in
3304     aarch64|alpha|ia64)
3305         spic=$shared
3306     ;;
3307     mips)
3308         check_64bit mips mips64 '_MIPS_SIM > 1'
3309         spic=$shared
3310     ;;
3311     parisc)
3312         check_64bit parisc parisc64 'sizeof(void *) > 4'
3313         spic=$shared
3314     ;;
3315     ppc)
3316         check_64bit ppc ppc64 'sizeof(void *) > 4'
3317         spic=$shared
3318     ;;
3319     s390)
3320         check_64bit s390 s390x 'sizeof(void *) > 4'
3321         spic=$shared
3322     ;;
3323     sparc)
3324         check_64bit sparc sparc64 'sizeof(void *) > 4'
3325         spic=$shared
3326     ;;
3327     x86)
3328         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3329         if test "$subarch" = "x86_64"; then
3330             spic=$shared
3331         fi
3332     ;;
3333 esac
3334
3335 enable $subarch
3336 enabled spic && enable_weak pic
3337
3338 # OS specific
3339 case $target_os in
3340     aix)
3341         SHFLAGS=-shared
3342         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3343         enabled shared && add_ldflags -Wl,-brtl
3344         ;;
3345     android)
3346         disable symver
3347         SLIB_INSTALL_NAME='$(SLIBNAME)'
3348         SLIB_INSTALL_LINKS=
3349         # soname not set on purpose
3350         SHFLAGS=-shared
3351         ;;
3352     haiku)
3353         prefix_default="/boot/common"
3354         network_extralibs="-lnetwork"
3355         host_libs=
3356         ;;
3357     sunos)
3358         SHFLAGS='-shared -Wl,-h,$$(@F)'
3359         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3360         network_extralibs="-lsocket -lnsl"
3361         # When using suncc to build, the Solaris linker will mark
3362         # an executable with each instruction set encountered by
3363         # the Solaris assembler.  As our libraries contain their own
3364         # guards for processor-specific code, instead suppress
3365         # generation of the HWCAPS ELF section on Solaris x86 only.
3366         enabled_all suncc x86 &&
3367             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3368             add_ldflags -Wl,-M,mapfile
3369         nm_default='nm -P -g'
3370         ;;
3371     netbsd)
3372         disable symver
3373         oss_indev_extralibs="-lossaudio"
3374         oss_outdev_extralibs="-lossaudio"
3375         ;;
3376     openbsd|bitrig)
3377         disable symver
3378         SHFLAGS='-shared'
3379         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3380         SLIB_INSTALL_LINKS=
3381         oss_indev_extralibs="-lossaudio"
3382         oss_outdev_extralibs="-lossaudio"
3383         ;;
3384     dragonfly)
3385         disable symver
3386         ;;
3387     freebsd)
3388         ;;
3389     bsd/os)
3390         add_extralibs -lpoll -lgnugetopt
3391         ;;
3392     darwin)
3393         gas="gas-preprocessor.pl $cc"
3394         enabled ppc && add_asflags -force_cpusubtype_ALL
3395         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3396         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3397         add_ldflags -Wl,-dynamic,-search_paths_first
3398         SLIBSUF=".dylib"
3399         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3400         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3401         objformat="macho"
3402         enabled x86_64 && objformat="macho64"
3403         enabled_any pic shared ||
3404             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3405         ;;
3406     mingw32*)
3407         if test $target_os = "mingw32ce"; then
3408             disable network
3409         else
3410             target_os=mingw32
3411         fi
3412         LIBTARGET=i386
3413         if enabled x86_64; then
3414             LIBTARGET="i386:x86-64"
3415         elif enabled arm; then
3416             LIBTARGET=arm-wince
3417         fi
3418         check_ldflags -Wl,--nxcompat
3419         check_ldflags -Wl,--dynamicbase
3420         shlibdir_default="$bindir_default"
3421         SLIBPREF=""
3422         SLIBSUF=".dll"
3423         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3424         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3425         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3426         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3427         SLIB_INSTALL_LINKS=
3428         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3429         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3430         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3431         objformat="win32"
3432         dlltool="${cross_prefix}dlltool"
3433         ranlib=:
3434         enable dos_paths
3435         ;;
3436     win32|win64)
3437         disable symver
3438         if enabled shared; then
3439             # Link to the import library instead of the normal static library
3440             # for shared libs.
3441             LD_LIB='%.lib'
3442             # Cannot build both shared and static libs with MSVC or icl.
3443             disable static
3444         fi
3445         shlibdir_default="$bindir_default"
3446         SLIBPREF=""
3447         SLIBSUF=".dll"
3448         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3449         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3450         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3451         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3452         SLIB_INSTALL_LINKS=
3453         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3454         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3455         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3456         objformat="win32"
3457         ranlib=:
3458         enable dos_paths
3459         ;;
3460     cygwin*)
3461         target_os=cygwin
3462         shlibdir_default="$bindir_default"
3463         SLIBPREF="cyg"
3464         SLIBSUF=".dll"
3465         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3466         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3467         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3468         SLIB_INSTALL_LINKS=
3469         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3470         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3471         objformat="win32"
3472         enable dos_paths
3473         ;;
3474     *-dos|freedos|opendos)
3475         network_extralibs="-lsocket"
3476         objformat="coff"
3477         enable dos_paths
3478         add_cppflags -U__STRICT_ANSI__
3479         ;;
3480     linux)
3481         enable dv1394
3482         ;;
3483     irix*)
3484         target_os=irix
3485         ranlib="echo ignoring ranlib"
3486         ;;
3487     os/2*)
3488         ln_s="cp -f"
3489         objformat="aout"
3490         add_cppflags -D_GNU_SOURCE
3491         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3492         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3493         LIBSUF="_s.a"
3494         SLIBPREF=""
3495         SLIBSUF=".dll"
3496         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3497         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3498         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3499             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3500             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3501             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3502             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3503             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3504         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3505             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3506         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3507         enable dos_paths
3508         ;;
3509     gnu/kfreebsd)
3510         add_cppflags -D_BSD_SOURCE
3511         ;;
3512     gnu)
3513         ;;
3514     qnx)
3515         add_cppflags -D_QNX_SOURCE
3516         network_extralibs="-lsocket"
3517         ;;
3518     symbian)
3519         SLIBSUF=".dll"
3520         enable dos_paths
3521         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3522         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3523         add_ldflags -Wl,--target1-abs,--no-undefined \
3524                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3525                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3526         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3527                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3528                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3529         ;;
3530     osf1)
3531         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3532         ;;
3533     minix)
3534         ;;
3535     plan9)
3536         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3537                      -D_REENTRANT_SOURCE        \
3538                      -D_RESEARCH_SOURCE         \
3539                      -DFD_SETSIZE=96            \
3540                      -DHAVE_SOCK_OPTS
3541         add_compat strtod.o strtod=avpriv_strtod
3542         network_extralibs='-lbsd'
3543         exeobjs=compat/plan9/main.o
3544         cp_f='cp'
3545         ;;
3546     none)
3547         ;;
3548     *)
3549         die "Unknown OS '$target_os'."
3550         ;;
3551 esac
3552
3553 # determine libc flavour
3554
3555 probe_libc(){
3556     pfx=$1
3557     pfx_no_=${pfx%_}
3558     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3559     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3560         eval ${pfx}libc_type=uclibc
3561         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3562     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3563         eval ${pfx}libc_type=glibc
3564         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3565     # MinGW headers can be installed on Cygwin, so check for newlib first.
3566     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3567         eval ${pfx}libc_type=newlib
3568         add_${pfx}cppflags -U__STRICT_ANSI__
3569     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3570     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3571         eval ${pfx}libc_type=mingw64
3572         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3573         eval test \$${pfx_no_}cc_type = "gcc" &&
3574             add_${pfx}cppflags -D__printf__=__gnu_printf__
3575     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3576          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3577         eval ${pfx}libc_type=mingw32
3578         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3579             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3580             die "ERROR: MinGW32 runtime version must be >= 3.15."
3581         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3582         eval test \$${pfx_no_}cc_type = "gcc" &&
3583             add_${pfx}cppflags -D__printf__=__gnu_printf__
3584     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3585         eval ${pfx}libc_type=msvcrt
3586         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3587         # 0x601 by default unless something else is set by the user.
3588         # This can easily lead to us detecting functions only present
3589         # in such new versions and producing binaries requiring windows 7.0.
3590         # Therefore explicitly set the default to XP unless the user has
3591         # set something else on the command line.
3592         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3593             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3594     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3595         eval ${pfx}libc_type=klibc
3596     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3597         eval ${pfx}libc_type=bionic
3598     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3599         eval ${pfx}libc_type=solaris
3600         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3601     fi
3602 }
3603
3604 probe_libc
3605 test -n "$libc_type" && enable libc_$libc_type
3606 probe_libc host_
3607 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3608
3609 case $libc_type in
3610     bionic)
3611         add_compat strtod.o strtod=avpriv_strtod
3612         ;;
3613     msvcrt)
3614         add_compat strtod.o strtod=avpriv_strtod
3615         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3616                                      _snprintf=avpriv_snprintf  \
3617                                      vsnprintf=avpriv_vsnprintf
3618         ;;
3619 esac
3620
3621 # hacks for compiler/libc/os combinations
3622
3623 if enabled_all tms470 libc_glibc; then
3624     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3625     add_cppflags -D__USER_LABEL_PREFIX__=
3626     add_cppflags -D__builtin_memset=memset
3627     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3628     add_cflags   -pds=48    # incompatible redefinition of macro
3629 fi
3630
3631 if enabled_all ccc libc_glibc; then
3632     add_ldflags -Wl,-z,now  # calls to libots crash without this
3633 fi
3634
3635 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3636     add_cppflags '-I\$(SRC_PATH)/compat/float'
3637
3638 esc(){
3639     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3640 }
3641
3642 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3643
3644 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3645
3646 set_default $PATHS_LIST
3647 set_default nm
3648
3649 # we need to build at least one lib type
3650 if ! enabled_any static shared; then
3651     cat <<EOF
3652 At least one library type must be built.
3653 Specify --enable-static to build the static libraries or --enable-shared to
3654 build the shared libraries as well. To only build the shared libraries specify
3655 --disable-static in addition to --enable-shared.
3656 EOF
3657     exit 1;
3658 fi
3659
3660 die_license_disabled() {
3661     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3662 }
3663
3664 die_license_disabled gpl libcdio
3665 die_license_disabled gpl libx264
3666 die_license_disabled gpl libx265
3667 die_license_disabled gpl libxavs
3668 die_license_disabled gpl libxvid
3669 die_license_disabled gpl x11grab
3670
3671 die_license_disabled nonfree libfaac
3672 die_license_disabled nonfree libfdk_aac
3673 die_license_disabled nonfree openssl
3674
3675 die_license_disabled version3 libopencore_amrnb
3676 die_license_disabled version3 libopencore_amrwb
3677 die_license_disabled version3 libvo_aacenc
3678 die_license_disabled version3 libvo_amrwbenc
3679
3680 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3681
3682 disabled optimizations || check_cflags -fomit-frame-pointer
3683
3684 enable_weak_pic() {
3685     disabled pic && return
3686     enable pic
3687     add_cppflags -DPIC
3688     case "$target_os" in
3689     mingw*|cygwin*)
3690         ;;
3691     *)
3692         add_cflags -fPIC
3693         ;;
3694     esac
3695     add_asflags  -fPIC
3696 }
3697
3698 enabled pic && enable_weak_pic
3699
3700 check_cc <<EOF || die "Symbol mangling check failed."
3701 int ff_extern;
3702 EOF
3703 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3704 extern_prefix