git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89
  90 Licensing options:
  91   --enable-gpl             allow use of GPL code, the resulting libs
  92                            and binaries will be under GPL [no]
  93   --enable-version3        upgrade (L)GPL to version 3 [no]
  94   --enable-nonfree         allow use of nonfree code, the resulting libs
  95                            and binaries will be unredistributable [no]
  96
  97 Configuration options:
  98   --disable-static         do not build static libraries [no]
  99   --enable-shared          build shared libraries [no]
 100   --enable-small           optimize for size instead of speed
 101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 102   --enable-gray            enable full grayscale support (slower color)
 103   --disable-swscale-alpha  disable alpha channel support in swscale
 104   --disable-all            disable building components, libraries and programs
 105
 106 Program options:
 107   --disable-programs       do not build command line programs
 108   --disable-avconv         disable avconv build
 109   --disable-avplay         disable avplay build
 110   --disable-avprobe        disable avprobe build
 111   --disable-avserver       disable avserver build
 112
 113 Component options:
 114   --disable-doc            do not build documentation
 115   --disable-avdevice       disable libavdevice build
 116   --disable-avcodec        disable libavcodec build
 117   --disable-avformat       disable libavformat build
 118   --disable-avutil         disable libavutil build
 119   --disable-swscale        disable libswscale build
 120   --disable-avfilter       disable video filter support [no]
 121   --disable-avresample     disable libavresample build [no]
 122   --disable-pthreads       disable pthreads [auto]
 123   --disable-w32threads     disable Win32 threads [auto]
 124   --disable-network        disable network support [no]
 125   --disable-dct            disable DCT code
 126   --disable-error-resilience disable error resilience code
 127   --disable-lsp            disable LSP code
 128   --disable-lzo            disable LZO decoder code
 129   --disable-mdct           disable MDCT code
 130   --disable-rdft           disable RDFT code
 131   --disable-fft            disable FFT code
 132
 133 Hardware accelerators:
 134   --enable-dxva2           enable DXVA2 code
 135   --enable-vaapi           enable VAAPI code
 136   --enable-vda             enable VDA code
 137   --enable-vdpau           enable VDPAU code
 138
 139 Individual component options:
 140   --disable-everything     disable all components listed below
 141   --disable-encoder=NAME   disable encoder NAME
 142   --enable-encoder=NAME    enable encoder NAME
 143   --disable-encoders       disable all encoders
 144   --disable-decoder=NAME   disable decoder NAME
 145   --enable-decoder=NAME    enable decoder NAME
 146   --disable-decoders       disable all decoders
 147   --disable-hwaccel=NAME   disable hwaccel NAME
 148   --enable-hwaccel=NAME    enable hwaccel NAME
 149   --disable-hwaccels       disable all hwaccels
 150   --disable-muxer=NAME     disable muxer NAME
 151   --enable-muxer=NAME      enable muxer NAME
 152   --disable-muxers         disable all muxers
 153   --disable-demuxer=NAME   disable demuxer NAME
 154   --enable-demuxer=NAME    enable demuxer NAME
 155   --disable-demuxers       disable all demuxers
 156   --enable-parser=NAME     enable parser NAME
 157   --disable-parser=NAME    disable parser NAME
 158   --disable-parsers        disable all parsers
 159   --enable-bsf=NAME        enable bitstream filter NAME
 160   --disable-bsf=NAME       disable bitstream filter NAME
 161   --disable-bsfs           disable all bitstream filters
 162   --enable-protocol=NAME   enable protocol NAME
 163   --disable-protocol=NAME  disable protocol NAME
 164   --disable-protocols      disable all protocols
 165   --enable-indev=NAME      enable input device NAME
 166   --disable-indev=NAME     disable input device NAME
 167   --disable-indevs         disable input devices
 168   --enable-outdev=NAME     enable output device NAME
 169   --disable-outdev=NAME    disable output device NAME
 170   --disable-outdevs        disable output devices
 171   --disable-devices        disable all devices
 172   --enable-filter=NAME     enable filter NAME
 173   --disable-filter=NAME    disable filter NAME
 174   --disable-filters        disable all filters
 175
 176 External library support:
 177   --enable-avisynth        enable reading of AviSynth script files [no]
 178   --enable-bzlib           enable bzlib [autodetect]
 179   --enable-frei0r          enable frei0r video filtering
 180   --enable-gnutls          enable gnutls [no]
 181   --enable-libcdio         enable audio CD grabbing with libcdio
 182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 183                            and libraw1394 [no]
 184   --enable-libfaac         enable AAC encoding via libfaac [no]
 185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 186   --enable-libfreetype     enable libfreetype [no]
 187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 192   --enable-libopencv       enable video filtering via libopencv [no]
 193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 194   --enable-libopus         enable Opus decoding via libopus [no]
 195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 199   --enable-libtheora       enable Theora encoding via libtheora [no]
 200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 205   --enable-libwebp         enable WebP encoding via libwebp [no]
 206   --enable-libx264         enable H.264 encoding via x264 [no]
 207   --enable-libxavs         enable AVS encoding via xavs [no]
 208   --enable-libxvid         enable Xvid encoding via xvidcore,
 209                            native MPEG-4/Xvid encoder exists [no]
 210   --enable-openssl         enable openssl [no]
 211   --enable-x11grab         enable X11 grabbing [no]
 212   --enable-zlib            enable zlib [autodetect]
 213
 214 Advanced options (experts only):
 215   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 216   --enable-cross-compile   assume a cross-compiler is used
 217   --sysroot=PATH           root of cross-build tree
 218   --sysinclude=PATH        location of cross-build system headers
 219   --target-os=OS           compiler targets OS [$target_os]
 220   --target-exec=CMD        command to run executables on target
 221   --target-path=DIR        path to view of build directory on target
 222   --target-samples=DIR     path to samples directory on target
 223   --toolchain=NAME         set tool defaults according to NAME
 224   --nm=NM                  use nm tool
 225   --ar=AR                  use archive tool AR [$ar_default]
 226   --as=AS                  use assembler AS [$as_default]
 227   --cc=CC                  use C compiler CC [$cc_default]
 228   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 229   --ld=LD                  use linker LD
 230   --host-cc=HOSTCC         use host C compiler HOSTCC
 231   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 232   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 233   --host-ld=HOSTLD         use host linker HOSTLD
 234   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 235   --host-libs=HLIBS        use libs HLIBS when linking for host
 236   --host-os=OS             compiler host OS [$target_os]
 237   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 238   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 239   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 240   --extra-version=STRING   version string suffix []
 241   --optflags=OPTFLAGS      override optimization-related compiler flags
 242   --build-suffix=SUFFIX    library name suffix []
 243   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 244   --arch=ARCH              select architecture [$arch]
 245   --cpu=CPU                select the minimum required CPU (affects
 246                            instruction selection, may crash on older CPUs)
 247   --enable-pic             build position-independent code
 248   --enable-sram            allow use of on-chip SRAM
 249   --enable-thumb           compile for Thumb instruction set
 250   --disable-symver         disable symbol versioning
 251   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 252   --disable-safe-bitstream-reader
 253                            disable buffer boundary checking in bitreaders
 254                            (faster, but may crash)
 255   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 256   --enable-lto             use link-time optimization
 257
 258 Optimization options (experts only):
 259   --disable-asm            disable all assembler optimizations
 260   --disable-altivec        disable AltiVec optimizations
 261   --disable-amd3dnow       disable 3DNow! optimizations
 262   --disable-amd3dnowext    disable 3DNow! extended optimizations
 263   --disable-mmx            disable MMX optimizations
 264   --disable-mmxext         disable MMXEXT optimizations
 265   --disable-sse            disable SSE optimizations
 266   --disable-sse2           disable SSE2 optimizations
 267   --disable-sse3           disable SSE3 optimizations
 268   --disable-ssse3          disable SSSE3 optimizations
 269   --disable-sse4           disable SSE4 optimizations
 270   --disable-sse42          disable SSE4.2 optimizations
 271   --disable-avx            disable AVX optimizations
 272   --disable-fma4           disable FMA4 optimizations
 273   --disable-avx2           disable AVX2 optimizations
 274   --disable-armv5te        disable armv5te optimizations
 275   --disable-armv6          disable armv6 optimizations
 276   --disable-armv6t2        disable armv6t2 optimizations
 277   --disable-vfp            disable VFP optimizations
 278   --disable-neon           disable NEON optimizations
 279   --disable-vis            disable VIS optimizations
 280   --disable-inline-asm     disable use of inline assembler
 281   --disable-yasm           disable use of yasm assembler
 282
 283 Developer options (useful when working on Libav itself):
 284   --disable-debug          disable debugging symbols
 285   --enable-debug=LEVEL     set the debug level [$debuglevel]
 286   --disable-optimizations  disable compiler optimizations
 287   --enable-extra-warnings  enable more compiler warnings
 288   --samples=PATH           location of test samples for FATE, if not set use
 289                            \$LIBAV_SAMPLES at make invocation time.
 290   --enable-neon-clobber-test check NEON registers for clobbering (should be
 291                            used only for debugging purposes)
 292   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 293                            should be used only for debugging purposes)
 294   --enable-random          randomly enable/disable components
 295   --disable-random
 296   --enable-random=LIST     randomly enable/disable specific components or
 297   --disable-random=LIST    component groups. LIST is a comma-separated list
 298                            of NAME[:PROB] entries where NAME is a component
 299                            (group) and PROB the probability associated with
 300                            NAME (default 0.5).
 301   --random-seed=VALUE      seed value for --enable/disable-random
 302
 303 NOTE: Object files are built at the place where configure is launched.
 304 EOF
 305   exit 0
 306 }
 307
 308 quotes='""'
 309
 310 log(){
 311     echo "$@" >> $logfile
 312 }
 313
 314 log_file(){
 315     log BEGIN $1
 316     pr -n -t $1 >> $logfile
 317     log END $1
 318 }
 319
 320 echolog(){
 321     log "$@"
 322     echo "$@"
 323 }
 324
 325 warn(){
 326     log "WARNING: $*"
 327     WARNINGS="${WARNINGS}WARNING: $*\n"
 328 }
 329
 330 die(){
 331     echolog "$@"
 332     cat <<EOF
 333
 334 If you think configure made a mistake, make sure you are using the latest
 335 version from Git.  If the latest version fails, report the problem to the
 336 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 337 EOF
 338     if disabled logging; then
 339         cat <<EOF
 340 Rerun configure with logging enabled (do not use --disable-logging), and
 341 include the log this produces with your report.
 342 EOF
 343     else
 344         cat <<EOF
 345 Include the log file "$logfile" produced by configure as this will help
 346 solving the problem.
 347 EOF
 348     fi
 349     exit 1
 350 }
 351
 352 # Avoid locale weirdness, besides we really just want to translate ASCII.
 353 toupper(){
 354     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 355 }
 356
 357 tolower(){
 358     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 359 }
 360
 361 c_escape(){
 362     echo "$*" | sed 's/["\\]/\\\0/g'
 363 }
 364
 365 sh_quote(){
 366     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 367     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 368     echo "$v"
 369 }
 370
 371 cleanws(){
 372     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 373 }
 374
 375 filter(){
 376     pat=$1
 377     shift
 378     for v; do
 379         eval "case $v in $pat) echo $v ;; esac"
 380     done
 381 }
 382
 383 filter_out(){
 384     pat=$1
 385     shift
 386     for v; do
 387         eval "case $v in $pat) ;; *) echo $v ;; esac"
 388     done
 389 }
 390
 391 map(){
 392     m=$1
 393     shift
 394     for v; do eval $m; done
 395 }
 396
 397 add_suffix(){
 398     suffix=$1
 399     shift
 400     for v; do echo ${v}${suffix}; done
 401 }
 402
 403 set_all(){
 404     value=$1
 405     shift
 406     for var in $*; do
 407         eval $var=$value
 408     done
 409 }
 410
 411 set_weak(){
 412     value=$1
 413     shift
 414     for var; do
 415         eval : \${$var:=$value}
 416     done
 417 }
 418
 419 sanitize_var_name(){
 420     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 421 }
 422
 423 set_safe(){
 424     var=$1
 425     shift
 426     eval $(sanitize_var_name "$var")='$*'
 427 }
 428
 429 get_safe(){
 430     eval echo \$$(sanitize_var_name "$1")
 431 }
 432
 433 pushvar(){
 434     for pvar in $*; do
 435         eval level=\${${pvar}_level:=0}
 436         eval ${pvar}_${level}="\$$pvar"
 437         eval ${pvar}_level=$(($level+1))
 438     done
 439 }
 440
 441 popvar(){
 442     for pvar in $*; do
 443         eval level=\${${pvar}_level:-0}
 444         test $level = 0 && continue
 445         eval level=$(($level-1))
 446         eval $pvar="\${${pvar}_${level}}"
 447         eval ${pvar}_level=$level
 448         eval unset ${pvar}_${level}
 449     done
 450 }
 451
 452 enable(){
 453     set_all yes $*
 454 }
 455
 456 disable(){
 457     set_all no $*
 458 }
 459
 460 enable_weak(){
 461     set_weak yes $*
 462 }
 463
 464 disable_weak(){
 465     set_weak no $*
 466 }
 467
 468 enable_safe(){
 469     for var; do
 470         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 471     done
 472 }
 473
 474 disable_safe(){
 475     for var; do
 476         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 477     done
 478 }
 479
 480 do_enable_deep(){
 481     for var; do
 482         enabled $var && continue
 483         eval sel="\$${var}_select"
 484         eval sgs="\$${var}_suggest"
 485         pushvar var sgs
 486         enable_deep $sel
 487         popvar sgs
 488         enable_deep_weak $sgs
 489         popvar var
 490     done
 491 }
 492
 493 enable_deep(){
 494     do_enable_deep $*
 495     enable $*
 496 }
 497
 498 enable_deep_weak(){
 499     for var; do
 500         disabled $var && continue
 501         pushvar var
 502         do_enable_deep $var
 503         popvar var
 504         enable_weak $var
 505     done
 506 }
 507
 508 enabled(){
 509     test "${1#!}" = "$1" && op== || op=!=
 510     eval test "x\$${1#!}" $op "xyes"
 511 }
 512
 513 disabled(){
 514     test "${1#!}" = "$1" && op== || op=!=
 515     eval test "x\$${1#!}" $op "xno"
 516 }
 517
 518 enabled_all(){
 519     for opt; do
 520         enabled $opt || return 1
 521     done
 522 }
 523
 524 disabled_all(){
 525     for opt; do
 526         disabled $opt || return 1
 527     done
 528 }
 529
 530 enabled_any(){
 531     for opt; do
 532         enabled $opt && return 0
 533     done
 534 }
 535
 536 disabled_any(){
 537     for opt; do
 538         disabled $opt && return 0
 539     done
 540     return 1
 541 }
 542
 543 set_default(){
 544     for opt; do
 545         eval : \${$opt:=\$${opt}_default}
 546     done
 547 }
 548
 549 is_in(){
 550     value=$1
 551     shift
 552     for var in $*; do
 553         [ $var = $value ] && return 0
 554     done
 555     return 1
 556 }
 557
 558 do_check_deps(){
 559     for cfg; do
 560         cfg="${cfg#!}"
 561         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 562         disabled ${cfg}_checking && continue
 563         enable ${cfg}_checking
 564         append allopts $cfg
 565
 566         eval dep_all="\$${cfg}_deps"
 567         eval dep_any="\$${cfg}_deps_any"
 568         eval dep_sel="\$${cfg}_select"
 569         eval dep_sgs="\$${cfg}_suggest"
 570         eval dep_ifa="\$${cfg}_if"
 571         eval dep_ifn="\$${cfg}_if_any"
 572
 573         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 574         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 575         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 576
 577         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 578         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 579         enabled_all  $dep_all || disable $cfg
 580         enabled_any  $dep_any || disable $cfg
 581         disabled_any $dep_sel && disable $cfg
 582
 583         if enabled $cfg; then
 584             enable_deep $dep_sel
 585             enable_deep_weak $dep_sgs
 586         fi
 587
 588         disable ${cfg}_checking
 589     done
 590 }
 591
 592 check_deps(){
 593     unset allopts
 594
 595     do_check_deps "$@"
 596
 597     for cfg in $allopts; do
 598         enabled $cfg || continue
 599         eval dep_extralibs="\$${cfg}_extralibs"
 600         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 601     done
 602 }
 603
 604 print_config(){
 605     pfx=$1
 606     files=$2
 607     shift 2
 608     map 'eval echo "$v \${$v:-no}"' "$@" |
 609     awk "BEGIN { split(\"$files\", files) }
 610         {
 611             c = \"$pfx\" toupper(\$1);
 612             v = \$2;
 613             sub(/yes/, 1, v);
 614             sub(/no/,  0, v);
 615             for (f in files) {
 616                 file = files[f];
 617                 if (file ~ /\\.h\$/) {
 618                     printf(\"#define %s %d\\n\", c, v) >>file;
 619                 } else if (file ~ /\\.asm\$/) {
 620                     printf(\"%%define %s %d\\n\", c, v) >>file;
 621                 } else if (file ~ /\\.mak\$/) {
 622                     n = -v ? \"\" : \"!\";
 623                     printf(\"%s%s=yes\\n\", n, c) >>file;
 624                 }
 625             }
 626         }"
 627 }
 628
 629 print_enabled(){
 630     suf=$1
 631     shift
 632     for v; do
 633         enabled $v && printf "%s\n" ${v%$suf};
 634     done
 635 }
 636
 637 append(){
 638     var=$1
 639     shift
 640     eval "$var=\"\$$var $*\""
 641 }
 642
 643 prepend(){
 644     var=$1
 645     shift
 646     eval "$var=\"$* \$$var\""
 647 }
 648
 649 add_cppflags(){
 650     append CPPFLAGS "$@"
 651 }
 652
 653 add_cflags(){
 654     append CFLAGS $($cflags_filter "$@")
 655 }
 656
 657 add_asflags(){
 658     append ASFLAGS $($asflags_filter "$@")
 659 }
 660
 661 add_ldflags(){
 662     append LDFLAGS $($ldflags_filter "$@")
 663 }
 664
 665 add_stripflags(){
 666     append STRIPFLAGS "$@"
 667 }
 668
 669 add_extralibs(){
 670     prepend extralibs $($ldflags_filter "$@")
 671 }
 672
 673 add_host_cppflags(){
 674     append host_cppflags "$@"
 675 }
 676
 677 add_host_cflags(){
 678     append host_cflags $($host_cflags_filter "$@")
 679 }
 680
 681 add_host_ldflags(){
 682     append host_ldflags $($host_ldflags_filter "$@")
 683 }
 684
 685 add_compat(){
 686     append compat_objs $1
 687     shift
 688     map 'add_cppflags -D$v' "$@"
 689 }
 690
 691 check_cmd(){
 692     log "$@"
 693     "$@" >> $logfile 2>&1
 694 }
 695
 696 cc_o(){
 697     eval printf '%s\\n' $CC_O
 698 }
 699
 700 cc_e(){
 701     eval printf '%s\\n' $CC_E
 702 }
 703
 704 check_cc(){
 705     log check_cc "$@"
 706     cat > $TMPC
 707     log_file $TMPC
 708     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 709 }
 710
 711 check_cpp(){
 712     log check_cpp "$@"
 713     cat > $TMPC
 714     log_file $TMPC
 715     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 716 }
 717
 718 as_o(){
 719     eval printf '%s\\n' $AS_O
 720 }
 721
 722 check_as(){
 723     log check_as "$@"
 724     cat > $TMPS
 725     log_file $TMPS
 726     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 727 }
 728
 729 check_inline_asm(){
 730     log check_inline_asm "$@"
 731     name="$1"
 732     code="$2"
 733     shift 2
 734     disable $name
 735     check_cc "$@" <<EOF && enable $name
 736 void foo(void){ __asm__ volatile($code); }
 737 EOF
 738 }
 739
 740 check_insn(){
 741     log check_insn "$@"
 742     check_inline_asm ${1}_inline "\"$2\""
 743     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 744 }
 745
 746 check_yasm(){
 747     log check_yasm "$@"
 748     echo "$1" > $TMPS
 749     log_file $TMPS
 750     shift 1
 751     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 752 }
 753
 754 ld_o(){
 755     eval printf '%s\\n' $LD_O
 756 }
 757
 758 check_ld(){
 759     log check_ld "$@"
 760     flags=$(filter_out '-l*' "$@")
 761     libs=$(filter '-l*' "$@")
 762     check_cc $($cflags_filter $flags) || return
 763     flags=$($ldflags_filter $flags)
 764     libs=$($ldflags_filter $libs)
 765     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 766 }
 767
 768 print_include(){
 769     hdr=$1
 770     test "${hdr%.h}" = "${hdr}" &&
 771         echo "#include $hdr"    ||
 772         echo "#include <$hdr>"
 773 }
 774
 775 check_code(){
 776     log check_code "$@"
 777     check=$1
 778     headers=$2
 779     code=$3
 780     shift 3
 781     {
 782         for hdr in $headers; do
 783             print_include $hdr
 784         done
 785         echo "int main(void) { $code; return 0; }"
 786     } | check_$check "$@"
 787 }
 788
 789 check_cppflags(){
 790     log check_cppflags "$@"
 791     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 792 int x;
 793 EOF
 794 }
 795
 796 test_cflags(){
 797     log test_cflags "$@"
 798     set -- $($cflags_filter "$@")
 799     check_cc "$@" <<EOF
 800 int x;
 801 EOF
 802 }
 803
 804 check_cflags(){
 805     log check_cflags "$@"
 806     test_cflags "$@" && add_cflags "$@"
 807 }
 808
 809 test_ldflags(){
 810     log test_ldflags "$@"
 811     check_ld "$@" <<EOF
 812 int main(void){ return 0; }
 813 EOF
 814 }
 815
 816 check_ldflags(){
 817     log check_ldflags "$@"
 818     test_ldflags "$@" && add_ldflags "$@"
 819 }
 820
 821 test_stripflags(){
 822     log test_stripflags "$@"
 823     # call check_cc to get a fresh TMPO
 824     check_cc <<EOF
 825 int main(void) { return 0; }
 826 EOF
 827     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 828 }
 829
 830 check_stripflags(){
 831     log check_stripflags "$@"
 832     test_stripflags "$@" && add_stripflags "$@"
 833 }
 834
 835 check_header(){
 836     log check_header "$@"
 837     header=$1
 838     shift
 839     disable_safe $header
 840     check_cpp "$@" <<EOF && enable_safe $header
 841 #include <$header>
 842 int x;
 843 EOF
 844 }
 845
 846 check_func(){
 847     log check_func "$@"
 848     func=$1
 849     shift
 850     disable $func
 851     check_ld "$@" <<EOF && enable $func
 852 extern int $func();
 853 int main(void){ $func(); }
 854 EOF
 855 }
 856
 857 check_mathfunc(){
 858     log check_mathfunc "$@"
 859     func=$1
 860     narg=$2
 861     shift 2
 862     test $narg = 2 && args="f, g" || args="f"
 863     disable $func
 864     check_ld "$@" <<EOF && enable $func
 865 #include <math.h>
 866 float foo(float f, float g) { return $func($args); }
 867 int main(void){ return 0; }
 868 EOF
 869 }
 870
 871 check_func_headers(){
 872     log check_func_headers "$@"
 873     headers=$1
 874     funcs=$2
 875     shift 2
 876     {
 877         for hdr in $headers; do
 878             print_include $hdr
 879         done
 880         for func in $funcs; do
 881             echo "long check_$func(void) { return (long) $func; }"
 882         done
 883         echo "int main(void) { return 0; }"
 884     } | check_ld "$@" && enable $funcs && enable_safe $headers
 885 }
 886
 887 check_cpp_condition(){
 888     log check_cpp_condition "$@"
 889     header=$1
 890     condition=$2
 891     shift 2
 892     check_cpp "$@" <<EOF
 893 #include <$header>
 894 #if !($condition)
 895 #error "unsatisfied condition: $condition"
 896 #endif
 897 EOF
 898 }
 899
 900 check_lib(){
 901     log check_lib "$@"
 902     header="$1"
 903     func="$2"
 904     shift 2
 905     check_header $header && check_func $func "$@" && add_extralibs "$@"
 906 }
 907
 908 check_lib2(){
 909     log check_lib2 "$@"
 910     headers="$1"
 911     funcs="$2"
 912     shift 2
 913     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 914 }
 915
 916 check_pkg_config(){
 917     log check_pkg_config "$@"
 918     pkg="$1"
 919     headers="$2"
 920     funcs="$3"
 921     shift 3
 922     check_cmd $pkg_config --exists --print-errors $pkg || return
 923     pkg_cflags=$($pkg_config --cflags $pkg)
 924     pkg_libs=$($pkg_config --libs $pkg)
 925     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 926         set_safe ${pkg}_cflags $pkg_cflags   &&
 927         set_safe ${pkg}_libs   $pkg_libs
 928 }
 929
 930 check_exec(){
 931     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 932 }
 933
 934 check_exec_crash(){
 935     code=$(cat)
 936
 937     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 938     # are safe but may not be available everywhere.  Thus we use
 939     # raise(SIGTERM) instead.  The check is run in a subshell so we
 940     # can redirect the "Terminated" message from the shell.  SIGBUS
 941     # is not defined by standard C so it is used conditionally.
 942
 943     (check_exec "$@") >> $logfile 2>&1 <<EOF
 944 #include <signal.h>
 945 static void sighandler(int sig){
 946     raise(SIGTERM);
 947 }
 948 int foo(void){
 949     $code
 950 }
 951 int (*func_ptr)(void) = foo;
 952 int main(void){
 953     signal(SIGILL, sighandler);
 954     signal(SIGFPE, sighandler);
 955     signal(SIGSEGV, sighandler);
 956 #ifdef SIGBUS
 957     signal(SIGBUS, sighandler);
 958 #endif
 959     return func_ptr();
 960 }
 961 EOF
 962 }
 963
 964 check_type(){
 965     log check_type "$@"
 966     headers=$1
 967     type=$2
 968     shift 2
 969     disable_safe "$type"
 970     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 971 }
 972
 973 check_struct(){
 974     log check_struct "$@"
 975     headers=$1
 976     struct=$2
 977     member=$3
 978     shift 3
 979     disable_safe "${struct}_${member}"
 980     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 981         enable_safe "${struct}_${member}"
 982 }
 983
 984 check_builtin(){
 985     log check_builtin "$@"
 986     name=$1
 987     headers=$2
 988     builtin=$3
 989     shift 3
 990     disable "$name"
 991     check_code ld "$headers" "$builtin" "$@" && enable "$name"
 992 }
 993
 994 require(){
 995     name="$1"
 996     header="$2"
 997     func="$3"
 998     shift 3
 999     check_lib $header $func "$@" || die "ERROR: $name not found"
1000 }
1001
1002 require2(){
1003     name="$1"
1004     headers="$2"
1005     func="$3"
1006     shift 3
1007     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1008 }
1009
1010 require_pkg_config(){
1011     pkg="$1"
1012     check_pkg_config "$@" || die "ERROR: $pkg not found"
1013     add_cflags    $(get_safe ${pkg}_cflags)
1014     add_extralibs $(get_safe ${pkg}_libs)
1015 }
1016
1017 hostcc_e(){
1018     eval printf '%s\\n' $HOSTCC_E
1019 }
1020
1021 hostcc_o(){
1022     eval printf '%s\\n' $HOSTCC_O
1023 }
1024
1025 check_host_cc(){
1026     log check_host_cc "$@"
1027     cat > $TMPC
1028     log_file $TMPC
1029     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1030 }
1031
1032 check_host_cpp(){
1033     log check_host_cpp "$@"
1034     cat > $TMPC
1035     log_file $TMPC
1036     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1037 }
1038
1039 check_host_cppflags(){
1040     log check_host_cppflags "$@"
1041     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1042 int x;
1043 EOF
1044 }
1045
1046 check_host_cflags(){
1047     log check_host_cflags "$@"
1048     set -- $($host_cflags_filter "$@")
1049     check_host_cc "$@" <<EOF && append host_cflags "$@"
1050 int x;
1051 EOF
1052 }
1053
1054 check_host_cpp_condition(){
1055     log check_host_cpp_condition "$@"
1056     header=$1
1057     condition=$2
1058     shift 2
1059     check_host_cpp "$@" <<EOF
1060 #include <$header>
1061 #if !($condition)
1062 #error "unsatisfied condition: $condition"
1063 #endif
1064 EOF
1065 }
1066
1067 apply(){
1068     file=$1
1069     shift
1070     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1071 }
1072
1073 cp_if_changed(){
1074     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1075     mkdir -p "$(dirname $2)"
1076     $cp_f "$1" "$2"
1077 }
1078
1079 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1080 # system-dependent things.
1081
1082 COMPONENT_LIST="
1083     bsfs
1084     decoders
1085     demuxers
1086     encoders
1087     filters
1088     hwaccels
1089     indevs
1090     muxers
1091     outdevs
1092     parsers
1093     protocols
1094 "
1095
1096 EXAMPLE_LIST="
1097     output_example
1098     transcode_aac_example
1099 "
1100
1101 EXTERNAL_LIBRARY_LIST="
1102     avisynth
1103     bzlib
1104     frei0r
1105     gnutls
1106     libcdio
1107     libdc1394
1108     libfaac
1109     libfdk_aac
1110     libfreetype
1111     libgsm
1112     libilbc
1113     libmp3lame
1114     libopencore_amrnb
1115     libopencore_amrwb
1116     libopencv
1117     libopenjpeg
1118     libopus
1119     libpulse
1120     librtmp
1121     libschroedinger
1122     libspeex
1123     libtheora
1124     libvo_aacenc
1125     libvo_amrwbenc
1126     libvorbis
1127     libvpx
1128     libwavpack
1129     libwebp
1130     libx264
1131     libxavs
1132     libxvid
1133     openssl
1134     x11grab
1135     zlib
1136 "
1137
1138 HWACCEL_LIST="
1139     dxva2
1140     vaapi
1141     vda
1142     vdpau
1143 "
1144 LIBRARY_LIST="
1145     avcodec
1146     avdevice
1147     avfilter
1148     avformat
1149     avresample
1150     avutil
1151     swscale
1152 "
1153
1154 PROGRAM_LIST="
1155     avconv
1156     avplay
1157     avprobe
1158     avserver
1159 "
1160
1161 CONFIG_LIST="
1162     $COMPONENT_LIST
1163     $EXAMPLE_LIST
1164     $EXTERNAL_LIBRARY_LIST
1165     $HWACCEL_LIST
1166     $LIBRARY_LIST
1167     $PROGRAM_LIST
1168     dct
1169     doc
1170     error_resilience
1171     fft
1172     gpl
1173     gray
1174     hardcoded_tables
1175     lsp
1176     lzo
1177     mdct
1178     memalign_hack
1179     neon_clobber_test
1180     network
1181     nonfree
1182     pod2man
1183     pic
1184     rdft
1185     runtime_cpudetect
1186     safe_bitstream_reader
1187     shared
1188     small
1189     sram
1190     static
1191     swscale_alpha
1192     texi2html
1193     thumb
1194     version3
1195     xmm_clobber_test
1196 "
1197
1198 THREADS_LIST='
1199     pthreads
1200     w32threads
1201 '
1202
1203 ATOMICS_LIST='
1204     atomics_gcc
1205     atomics_suncc
1206     atomics_win32
1207 '
1208
1209 ARCH_LIST='
1210     aarch64
1211     alpha
1212     arm
1213     avr32
1214     avr32_ap
1215     avr32_uc
1216     bfin
1217     ia64
1218     m68k
1219     mips
1220     mips64
1221     parisc
1222     ppc
1223     ppc64
1224     s390
1225     sh4
1226     sparc
1227     sparc64
1228     tilegx
1229     tilepro
1230     tomi
1231     x86
1232     x86_32
1233     x86_64
1234 '
1235
1236 ARCH_EXT_LIST_ARM='
1237     armv5te
1238     armv6
1239     armv6t2
1240     neon
1241     vfp
1242     vfpv3
1243 '
1244
1245 ARCH_EXT_LIST_X86='
1246     amd3dnow
1247     amd3dnowext
1248     avx
1249     avx2
1250     fma4
1251     i686
1252     mmx
1253     mmxext
1254     sse
1255     sse2
1256     sse3
1257     sse4
1258     sse42
1259     ssse3
1260 '
1261
1262 ARCH_EXT_LIST="
1263     $ARCH_EXT_LIST_ARM
1264     $ARCH_EXT_LIST_X86
1265     altivec
1266     ppc4xx
1267     vis
1268 "
1269
1270 HAVE_LIST_CMDLINE='
1271     inline_asm
1272     symver
1273     yasm
1274 '
1275
1276 HAVE_LIST_PUB='
1277     bigendian
1278     fast_unaligned
1279 '
1280
1281 MATH_FUNCS="
1282     atanf
1283     atan2f
1284     cbrtf
1285     cosf
1286     exp2
1287     exp2f
1288     expf
1289     isinf
1290     isnan
1291     ldexpf
1292     llrint
1293     llrintf
1294     log2
1295     log2f
1296     log10f
1297     lrint
1298     lrintf
1299     powf
1300     rint
1301     round
1302     roundf
1303     sinf
1304     trunc
1305     truncf
1306 "
1307
1308 HAVE_LIST="
1309     $ARCH_EXT_LIST
1310     $(add_suffix _external $ARCH_EXT_LIST)
1311     $(add_suffix _inline   $ARCH_EXT_LIST)
1312     $HAVE_LIST_CMDLINE
1313     $HAVE_LIST_PUB
1314     $THREADS_LIST
1315     $ATOMICS_LIST
1316     $MATH_FUNCS
1317     aligned_malloc
1318     aligned_stack
1319     alsa_asoundlib_h
1320     altivec_h
1321     arpa_inet_h
1322     asm_mod_q
1323     asm_mod_y
1324     atomic_cas_ptr
1325     atomics_native
1326     attribute_may_alias
1327     attribute_packed
1328     cdio_paranoia_h
1329     cdio_paranoia_paranoia_h
1330     closesocket
1331     CommandLineToArgvW
1332     cpunop
1333     CryptGenRandom
1334     dcbzl
1335     dev_bktr_ioctl_bt848_h
1336     dev_bktr_ioctl_meteor_h
1337     dev_ic_bt8xx_h
1338     dev_video_bktr_ioctl_bt848_h
1339     dev_video_meteor_ioctl_meteor_h
1340     direct_h
1341     dlfcn_h
1342     dlopen
1343     dos_paths
1344     dxva_h
1345     ebp_available
1346     ebx_available
1347     fast_64bit
1348     fast_clz
1349     fast_cmov
1350     fcntl
1351     fork
1352     getaddrinfo
1353     gethrtime
1354     getopt
1355     GetProcessAffinityMask
1356     GetProcessMemoryInfo
1357     GetProcessTimes
1358     GetSystemTimeAsFileTime
1359     getrusage
1360     getservbyport
1361     gettimeofday
1362     gnu_as
1363     gsm_h
1364     ibm_asm
1365     inet_aton
1366     io_h
1367     inline_asm_labels
1368     isatty
1369     jack_port_get_latency_range
1370     ldbrx
1371     libc_msvcrt
1372     libdc1394_1
1373     libdc1394_2
1374     local_aligned_16
1375     local_aligned_8
1376     localtime_r
1377     loongson
1378     machine_ioctl_bt848_h
1379     machine_ioctl_meteor_h
1380     machine_rw_barrier
1381     malloc_h
1382     MapViewOfFile
1383     memalign
1384     MemoryBarrier
1385     mkstemp
1386     mm_empty
1387     mmap
1388     mprotect
1389     nanosleep
1390     poll_h
1391     posix_memalign
1392     pragma_deprecated
1393     rdtsc
1394     sched_getaffinity
1395     sdl
1396     SetConsoleTextAttribute
1397     setmode
1398     setrlimit
1399     Sleep
1400     sndio_h
1401     socklen_t
1402     soundcard_h
1403     strerror_r
1404     strptime
1405     strtok_r
1406     struct_addrinfo
1407     struct_group_source_req
1408     struct_ip_mreq_source
1409     struct_ipv6_mreq
1410     struct_pollfd
1411     struct_rusage_ru_maxrss
1412     struct_sockaddr_in6
1413     struct_sockaddr_sa_len
1414     struct_sockaddr_storage
1415     struct_v4l2_frmivalenum_discrete
1416     symver_asm_label
1417     symver_gnu_asm
1418     sync_val_compare_and_swap
1419     sysconf
1420     sysctl
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     threads
1430     unistd_h
1431     usleep
1432     vdpau_x11
1433     vfp_args
1434     VirtualAlloc
1435     windows_h
1436     winsock2_h
1437     xform_asm
1438     xlib
1439     xmm_clobbers
1440 "
1441
1442 # options emitted with CONFIG_ prefix but not available on the command line
1443 CONFIG_EXTRA="
1444     aandcttables
1445     ac3dsp
1446     audio_frame_queue
1447     dsputil
1448     gcrypt
1449     golomb
1450     gplv3
1451     h263dsp
1452     h264chroma
1453     h264dsp
1454     h264pred
1455     h264qpel
1456     hpeldsp
1457     huffman
1458     intrax8
1459     lgplv3
1460     lpc
1461     mpegaudio
1462     mpegaudiodsp
1463     mpegvideo
1464     mpegvideoenc
1465     nettle
1466     rangecoder
1467     riffdec
1468     riffenc
1469     rtpdec
1470     rtpenc_chain
1471     sinewin
1472     videodsp
1473     vp3dsp
1474 "
1475
1476 CMDLINE_SELECT="
1477     $ARCH_EXT_LIST
1478     $CONFIG_LIST
1479     $HAVE_LIST_CMDLINE
1480     $THREADS_LIST
1481     asm
1482     cross_compile
1483     debug
1484     extra_warnings
1485     logging
1486     lto
1487     optimizations
1488 "
1489
1490 PATHS_LIST='
1491     bindir
1492     datadir
1493     docdir
1494     incdir
1495     libdir
1496     mandir
1497     prefix
1498     shlibdir
1499 '
1500
1501 CMDLINE_SET="
1502     $PATHS_LIST
1503     ar
1504     arch
1505     as
1506     build_suffix
1507     cc
1508     cpu
1509     cross_prefix
1510     dep_cc
1511     extra_version
1512     host_cc
1513     host_cflags
1514     host_ld
1515     host_ldflags
1516     host_libs
1517     host_os
1518     ld
1519     logfile
1520     malloc_prefix
1521     nm
1522     optflags
1523     pkg_config
1524     random_seed
1525     samples
1526     sysinclude
1527     sysroot
1528     target_exec
1529     target_os
1530     target_path
1531     target_samples
1532     toolchain
1533 "
1534
1535 CMDLINE_APPEND="
1536     extra_cflags
1537     host_cppflags
1538 "
1539
1540 # code dependency declarations
1541
1542 # architecture extensions
1543
1544 armv5te_deps="arm"
1545 armv6_deps="arm"
1546 armv6t2_deps="arm"
1547 neon_deps_any="aarch64 arm"
1548 vfp_deps_any="aarch64 arm"
1549 vfpv3_deps="vfp"
1550
1551 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1552
1553 altivec_deps="ppc"
1554 ppc4xx_deps="ppc"
1555
1556 vis_deps="sparc"
1557
1558 cpunop_deps="i686"
1559 x86_64_select="i686"
1560 x86_64_suggest="fast_cmov"
1561
1562 amd3dnow_deps="mmx"
1563 amd3dnowext_deps="amd3dnow"
1564 i686_deps="x86"
1565 mmx_deps="x86"
1566 mmxext_deps="mmx"
1567 sse_deps="mmxext"
1568 sse2_deps="sse"
1569 sse3_deps="sse2"
1570 ssse3_deps="sse3"
1571 sse4_deps="ssse3"
1572 sse42_deps="sse4"
1573 avx_deps="sse42"
1574 fma4_deps="avx"
1575 avx2_deps="avx"
1576
1577 mmx_external_deps="yasm"
1578 mmx_inline_deps="inline_asm"
1579 mmx_suggest="mmx_external mmx_inline"
1580
1581 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1582     eval dep=\$${ext}_deps
1583     eval ${ext}_external_deps='"${dep}_external"'
1584     eval ${ext}_inline_deps='"${dep}_inline"'
1585     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1586 done
1587
1588 aligned_stack_if_any="aarch64 ppc x86"
1589 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1590 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1591 fast_unaligned_if_any="aarch64 ppc x86"
1592
1593 need_memalign="altivec neon sse"
1594
1595 # system capabilities
1596 log2_deps="!libc_msvcrt"
1597
1598 symver_if_any="symver_asm_label symver_gnu_asm"
1599
1600 # threading support
1601 atomics_gcc_if="sync_val_compare_and_swap"
1602 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1603 atomics_win32_if="MemoryBarrier"
1604 atomics_native_if_any="$ATOMICS_LIST"
1605 threads_if_any="$THREADS_LIST"
1606
1607 # subsystems
1608 dct_select="rdft"
1609 error_resilience_select="dsputil"
1610 lpc_select="dsputil"
1611 mdct_select="fft"
1612 rdft_select="fft"
1613 mpegaudio_select="mpegaudiodsp"
1614 mpegaudiodsp_select="dct"
1615 mpegvideo_select="dsputil hpeldsp videodsp"
1616 mpegvideoenc_select="mpegvideo"
1617
1618 # decoders / encoders
1619 aac_decoder_select="mdct sinewin"
1620 aac_encoder_select="audio_frame_queue mdct sinewin"
1621 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1622 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1623 ac3_encoder_select="mdct ac3dsp dsputil"
1624 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1625 aic_decoder_select="dsputil golomb"
1626 alac_encoder_select="lpc"
1627 als_decoder_select="dsputil"
1628 amrnb_decoder_select="lsp"
1629 amrwb_decoder_select="lsp"
1630 amv_decoder_select="dsputil hpeldsp"
1631 ape_decoder_select="dsputil"
1632 asv1_decoder_select="dsputil"
1633 asv1_encoder_select="dsputil"
1634 asv2_decoder_select="dsputil"
1635 asv2_encoder_select="dsputil"
1636 atrac1_decoder_select="mdct sinewin"
1637 atrac3_decoder_select="mdct"
1638 atrac3p_decoder_select="mdct sinewin"
1639 bink_decoder_select="dsputil hpeldsp"
1640 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1641 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1642 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1643 cllc_decoder_select="dsputil"
1644 comfortnoise_encoder_select="lpc"
1645 cook_decoder_select="dsputil mdct sinewin"
1646 cscd_decoder_select="lzo"
1647 cscd_decoder_suggest="zlib"
1648 dca_decoder_select="mdct"
1649 dnxhd_decoder_select="dsputil"
1650 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1651 dvvideo_decoder_select="dsputil"
1652 dvvideo_encoder_select="dsputil"
1653 dxa_decoder_deps="zlib"
1654 eac3_decoder_select="ac3_decoder"
1655 eac3_encoder_select="ac3_encoder"
1656 eamad_decoder_select="aandcttables dsputil mpegvideo"
1657 eatgq_decoder_select="aandcttables dsputil"
1658 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1659 ffv1_decoder_select="dsputil golomb rangecoder"
1660 ffv1_encoder_select="dsputil rangecoder"
1661 ffvhuff_decoder_select="dsputil"
1662 ffvhuff_encoder_select="dsputil huffman"
1663 flac_decoder_select="golomb"
1664 flac_encoder_select="dsputil golomb lpc"
1665 flashsv_decoder_deps="zlib"
1666 flashsv_encoder_deps="zlib"
1667 flashsv2_decoder_deps="zlib"
1668 flv_decoder_select="h263_decoder"
1669 flv_encoder_select="h263_encoder"
1670 fourxm_decoder_select="dsputil"
1671 fraps_decoder_select="dsputil huffman"
1672 g2m_decoder_deps="zlib"
1673 g2m_decoder_select="dsputil"
1674 h261_decoder_select="error_resilience mpegvideo"
1675 h261_encoder_select="aandcttables mpegvideoenc"
1676 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1677 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1678 h263i_decoder_select="h263_decoder"
1679 h263p_encoder_select="h263_encoder"
1680 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1681 h264_decoder_suggest="error_resilience"
1682 hevc_decoder_select="dsputil golomb videodsp"
1683 huffyuv_decoder_select="dsputil"
1684 huffyuv_encoder_select="dsputil huffman"
1685 iac_decoder_select="dsputil fft mdct sinewin"
1686 imc_decoder_select="dsputil fft mdct sinewin"
1687 indeo3_decoder_select="hpeldsp"
1688 interplay_video_decoder_select="hpeldsp"
1689 jpegls_decoder_select="dsputil golomb hpeldsp"
1690 jpegls_encoder_select="golomb"
1691 jv_decoder_select="dsputil"
1692 lagarith_decoder_select="dsputil"
1693 ljpeg_encoder_select="aandcttables mpegvideoenc"
1694 loco_decoder_select="golomb"
1695 mdec_decoder_select="dsputil error_resilience mpegvideo"
1696 metasound_decoder_select="lsp mdct sinewin"
1697 mimic_decoder_select="dsputil hpeldsp"
1698 mjpeg_decoder_select="dsputil hpeldsp"
1699 mjpegb_decoder_select="dsputil hpeldsp"
1700 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1701 mlp_decoder_select="dsputil mlp_parser"
1702 motionpixels_decoder_select="dsputil"
1703 mp1_decoder_select="mpegaudio"
1704 mp1float_decoder_select="mpegaudio"
1705 mp2_decoder_select="mpegaudio"
1706 mp2float_decoder_select="mpegaudio"
1707 mp3_decoder_select="mpegaudio"
1708 mp3adu_decoder_select="mpegaudio"
1709 mp3adufloat_decoder_select="mpegaudio"
1710 mp3float_decoder_select="mpegaudio"
1711 mp3on4_decoder_select="mpegaudio"
1712 mp3on4float_decoder_select="mpegaudio"
1713 mpc7_decoder_select="dsputil mpegaudiodsp"
1714 mpc8_decoder_select="dsputil mpegaudiodsp"
1715 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1716 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1717 mpeg1video_decoder_select="error_resilience mpegvideo"
1718 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1719 mpeg2video_decoder_select="error_resilience mpegvideo"
1720 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1721 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1722 mpeg4_encoder_select="h263_encoder"
1723 msmpeg4v1_decoder_select="h263_decoder"
1724 msmpeg4v2_decoder_select="h263_decoder"
1725 msmpeg4v2_encoder_select="h263_encoder"
1726 msmpeg4v3_decoder_select="h263_decoder"
1727 msmpeg4v3_encoder_select="h263_encoder"
1728 mss2_decoder_select="error_resilience vc1_decoder"
1729 mxpeg_decoder_select="dsputil hpeldsp"
1730 nellymoser_decoder_select="mdct sinewin"
1731 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1732 nuv_decoder_select="dsputil lzo"
1733 png_decoder_deps="zlib"
1734 png_decoder_select="dsputil"
1735 png_encoder_deps="zlib"
1736 png_encoder_select="dsputil"
1737 prores_decoder_select="dsputil"
1738 prores_encoder_select="dsputil"
1739 qcelp_decoder_select="lsp"
1740 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1741 ra_144_encoder_select="audio_frame_queue lpc"
1742 ralf_decoder_select="golomb"
1743 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1744 rv10_encoder_select="h263_encoder"
1745 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1746 rv20_encoder_select="h263_encoder"
1747 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1748 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1749 shorten_decoder_select="golomb"
1750 sipr_decoder_select="lsp"
1751 sp5x_decoder_select="dsputil hpeldsp"
1752 svq1_decoder_select="hpeldsp"
1753 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1754 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1755 svq3_decoder_suggest="error_resilience zlib"
1756 tak_decoder_select="dsputil"
1757 theora_decoder_select="vp3_decoder"
1758 tiff_decoder_suggest="zlib"
1759 tiff_encoder_suggest="zlib"
1760 thp_decoder_select="dsputil hpeldsp"
1761 truehd_decoder_select="mlp_decoder"
1762 truemotion2_decoder_select="dsputil"
1763 truespeech_decoder_select="dsputil"
1764 tscc_decoder_deps="zlib"
1765 twinvq_decoder_select="mdct lsp sinewin"
1766 utvideo_decoder_select="dsputil"
1767 utvideo_encoder_select="dsputil huffman"
1768 vble_decoder_select="dsputil"
1769 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1770 vc1image_decoder_select="vc1_decoder"
1771 vorbis_decoder_select="mdct"
1772 vorbis_encoder_select="mdct"
1773 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1774 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1775 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1776 vp6a_decoder_select="vp6_decoder"
1777 vp6f_decoder_select="vp6_decoder"
1778 vp8_decoder_select="h264pred videodsp"
1779 vp9_decoder_select="videodsp"
1780 webp_decoder_select="vp8_decoder"
1781 wmapro_decoder_select="mdct sinewin"
1782 wmav1_decoder_select="mdct sinewin"
1783 wmav1_encoder_select="mdct sinewin"
1784 wmav2_decoder_select="mdct sinewin"
1785 wmav2_encoder_select="mdct sinewin"
1786 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1787 wmv1_decoder_select="h263_decoder"
1788 wmv1_encoder_select="h263_encoder"
1789 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1790 wmv2_encoder_select="h263_encoder"
1791 wmv3_decoder_select="vc1_decoder"
1792 wmv3image_decoder_select="wmv3_decoder"
1793 zerocodec_decoder_deps="zlib"
1794 zlib_decoder_deps="zlib"
1795 zlib_encoder_deps="zlib"
1796 zmbv_decoder_deps="zlib"
1797 zmbv_encoder_deps="zlib"
1798
1799 # hardware accelerators
1800 dxva2_deps="dxva2api_h"
1801 vaapi_deps="va_va_h"
1802 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1803 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1804 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1805
1806 h263_vaapi_hwaccel_deps="vaapi"
1807 h263_vaapi_hwaccel_select="h263_decoder"
1808 h263_vdpau_hwaccel_deps="vdpau"
1809 h263_vdpau_hwaccel_select="h263_decoder"
1810 h264_dxva2_hwaccel_deps="dxva2"
1811 h264_dxva2_hwaccel_select="h264_decoder"
1812 h264_vaapi_hwaccel_deps="vaapi"
1813 h264_vaapi_hwaccel_select="h264_decoder"
1814 h264_vda_hwaccel_deps="vda"
1815 h264_vda_hwaccel_select="h264_decoder"
1816 h264_vdpau_hwaccel_deps="vdpau"
1817 h264_vdpau_hwaccel_select="h264_decoder"
1818 mpeg1_vdpau_hwaccel_deps="vdpau"
1819 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1820 mpeg2_dxva2_hwaccel_deps="dxva2"
1821 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1822 mpeg2_vaapi_hwaccel_deps="vaapi"
1823 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1824 mpeg2_vdpau_hwaccel_deps="vdpau"
1825 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1826 mpeg4_vaapi_hwaccel_deps="vaapi"
1827 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1828 mpeg4_vdpau_hwaccel_deps="vdpau"
1829 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1830 vc1_dxva2_hwaccel_deps="dxva2"
1831 vc1_dxva2_hwaccel_select="vc1_decoder"
1832 vc1_vaapi_hwaccel_deps="vaapi"
1833 vc1_vaapi_hwaccel_select="vc1_decoder"
1834 vc1_vdpau_hwaccel_deps="vdpau"
1835 vc1_vdpau_hwaccel_select="vc1_decoder"
1836 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1837 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1838 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1839
1840 # parsers
1841 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1842 mpeg4video_parser_select="error_resilience mpegvideo"
1843 mpegvideo_parser_select="error_resilience mpegvideo"
1844 vc1_parser_select="mpegvideo"
1845
1846 # external libraries
1847 libfaac_encoder_deps="libfaac"
1848 libfaac_encoder_select="audio_frame_queue"
1849 libfdk_aac_decoder_deps="libfdk_aac"
1850 libfdk_aac_encoder_deps="libfdk_aac"
1851 libfdk_aac_encoder_select="audio_frame_queue"
1852 libgsm_decoder_deps="libgsm"
1853 libgsm_encoder_deps="libgsm"
1854 libgsm_ms_decoder_deps="libgsm"
1855 libgsm_ms_encoder_deps="libgsm"
1856 libilbc_decoder_deps="libilbc"
1857 libilbc_encoder_deps="libilbc"
1858 libmp3lame_encoder_deps="libmp3lame"
1859 libmp3lame_encoder_select="audio_frame_queue"
1860 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1861 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1862 libopencore_amrnb_encoder_select="audio_frame_queue"
1863 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1864 libopenjpeg_decoder_deps="libopenjpeg"
1865 libopenjpeg_encoder_deps="libopenjpeg"
1866 libopus_decoder_deps="libopus"
1867 libopus_encoder_deps="libopus"
1868 libopus_encoder_select="audio_frame_queue"
1869 libschroedinger_decoder_deps="libschroedinger"
1870 libschroedinger_encoder_deps="libschroedinger"
1871 libspeex_decoder_deps="libspeex"
1872 libspeex_encoder_deps="libspeex"
1873 libspeex_encoder_select="audio_frame_queue"
1874 libtheora_encoder_deps="libtheora"
1875 libvo_aacenc_encoder_deps="libvo_aacenc"
1876 libvo_aacenc_encoder_select="audio_frame_queue"
1877 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1878 libvorbis_encoder_deps="libvorbis"
1879 libvorbis_encoder_select="audio_frame_queue"
1880 libvpx_vp8_decoder_deps="libvpx"
1881 libvpx_vp8_encoder_deps="libvpx"
1882 libvpx_vp9_decoder_deps="libvpx"
1883 libvpx_vp9_encoder_deps="libvpx"
1884 libwavpack_encoder_deps="libwavpack"
1885 libwebp_encoder_deps="libwebp"
1886 libx264_encoder_deps="libx264"
1887 libxavs_encoder_deps="libxavs"
1888 libxvid_encoder_deps="libxvid"
1889
1890 # demuxers / muxers
1891 ac3_demuxer_select="ac3_parser"
1892 asf_demuxer_select="riffdec"
1893 asf_muxer_select="riffenc"
1894 asf_stream_muxer_select="asf_muxer"
1895 avi_demuxer_select="riffdec"
1896 avi_muxer_select="riffenc"
1897 avisynth_demuxer_deps="avisynth"
1898 avisynth_demuxer_select="riffdec"
1899 caf_demuxer_select="riffdec"
1900 dirac_demuxer_select="dirac_parser"
1901 dxa_demuxer_select="riffdec"
1902 eac3_demuxer_select="ac3_parser"
1903 f4v_muxer_select="mov_muxer"
1904 flac_demuxer_select="flac_parser"
1905 hds_muxer_select="flv_muxer"
1906 hls_muxer_select="mpegts_muxer"
1907 ipod_muxer_select="mov_muxer"
1908 ismv_muxer_select="mov_muxer"
1909 matroska_audio_muxer_select="matroska_muxer"
1910 matroska_demuxer_select="riffdec"
1911 matroska_demuxer_suggest="bzlib lzo zlib"
1912 matroska_muxer_select="riffenc"
1913 mmf_muxer_select="riffenc"
1914 mov_demuxer_select="riffdec"
1915 mov_demuxer_suggest="zlib"
1916 mov_muxer_select="riffenc rtpenc_chain"
1917 mp3_demuxer_select="mpegaudio_parser"
1918 mp4_muxer_select="mov_muxer"
1919 mpegts_muxer_select="adts_muxer latm_muxer"
1920 mpegtsraw_demuxer_select="mpegts_demuxer"
1921 mxf_d10_muxer_select="mxf_muxer"
1922 nut_muxer_select="riffenc"
1923 nuv_demuxer_select="riffdec"
1924 ogg_demuxer_select="golomb"
1925 psp_muxer_select="mov_muxer"
1926 rtp_demuxer_select="sdp_demuxer"
1927 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1928 rtsp_demuxer_select="http_protocol rtpdec"
1929 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1930 sap_demuxer_select="sdp_demuxer"
1931 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1932 sdp_demuxer_select="rtpdec"
1933 smoothstreaming_muxer_select="ismv_muxer"
1934 spdif_muxer_select="aac_parser"
1935 tak_demuxer_select="tak_parser"
1936 tg2_muxer_select="mov_muxer"
1937 tgp_muxer_select="mov_muxer"
1938 w64_demuxer_select="wav_demuxer"
1939 wav_demuxer_select="riffdec"
1940 wav_muxer_select="riffenc"
1941 webm_muxer_select="riffenc"
1942 wtv_demuxer_select="riffdec"
1943 xmv_demuxer_select="riffdec"
1944 xwma_demuxer_select="riffdec"
1945
1946 # indevs / outdevs
1947 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1948 alsa_outdev_deps="alsa_asoundlib_h"
1949 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1950 dv1394_indev_deps="dv1394"
1951 dv1394_indev_select="dv_demuxer"
1952 fbdev_indev_deps="linux_fb_h"
1953 jack_indev_deps="jack_jack_h pthreads"
1954 libcdio_indev_deps="libcdio"
1955 libdc1394_indev_deps="libdc1394"
1956 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1957 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1958 pulse_indev_deps="libpulse"
1959 sndio_indev_deps="sndio_h"
1960 sndio_outdev_deps="sndio_h"
1961 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1962 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1963 vfwcap_indev_extralibs="-lavicap32"
1964 x11grab_indev_deps="x11grab XShmCreateImage"
1965
1966 # protocols
1967 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1968 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1969 ffrtmpcrypt_protocol_select="tcp_protocol"
1970 ffrtmphttp_protocol_deps="!librtmp_protocol"
1971 ffrtmphttp_protocol_select="http_protocol"
1972 gopher_protocol_select="network"
1973 httpproxy_protocol_select="tcp_protocol"
1974 http_protocol_select="tcp_protocol"
1975 https_protocol_select="tls_protocol"
1976 librtmp_protocol_deps="librtmp"
1977 librtmpe_protocol_deps="librtmp"
1978 librtmps_protocol_deps="librtmp"
1979 librtmpt_protocol_deps="librtmp"
1980 librtmpte_protocol_deps="librtmp"
1981 mmsh_protocol_select="http_protocol"
1982 mmst_protocol_select="network"
1983 rtmp_protocol_deps="!librtmp_protocol"
1984 rtmp_protocol_select="tcp_protocol"
1985 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1986 rtmps_protocol_deps="!librtmp_protocol"
1987 rtmps_protocol_select="tls_protocol"
1988 rtmpt_protocol_select="ffrtmphttp_protocol"
1989 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1990 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1991 rtp_protocol_select="udp_protocol"
1992 sctp_protocol_deps="struct_sctp_event_subscribe"
1993 sctp_protocol_select="network"
1994 srtp_protocol_select="rtp_protocol"
1995 tcp_protocol_select="network"
1996 tls_protocol_deps_any="openssl gnutls"
1997 tls_protocol_select="tcp_protocol"
1998 udp_protocol_select="network"
1999 unix_protocol_deps="sys_un_h"
2000 unix_protocol_select="network"
2001
2002 # filters
2003 blackframe_filter_deps="gpl"
2004 boxblur_filter_deps="gpl"
2005 cropdetect_filter_deps="gpl"
2006 delogo_filter_deps="gpl"
2007 drawtext_filter_deps="libfreetype"
2008 frei0r_filter_deps="frei0r dlopen strtok_r"
2009 frei0r_filter_extralibs='$ldl'
2010 frei0r_src_filter_deps="frei0r dlopen strtok_r"
2011 frei0r_src_filter_extralibs='$ldl'
2012 hqdn3d_filter_deps="gpl"
2013 interlace_filter_deps="gpl"
2014 resample_filter_deps="avresample"
2015 ocv_filter_deps="libopencv"
2016 scale_filter_deps="swscale"
2017
2018 # examples
2019 output_example_deps="avcodec avformat avutil swscale"
2020 transcode_aac_example_deps="avcodec avformat avresample"
2021
2022 # libraries
2023 avcodec_deps="avutil"
2024 avdevice_deps="avutil avcodec avformat"
2025 avfilter_deps="avutil"
2026 avformat_deps="avutil avcodec"
2027 avresample_deps="avutil"
2028 swscale_deps="avutil"
2029
2030 # programs
2031 avconv_deps="avcodec avfilter avformat avresample swscale"
2032 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2033                fps_filter null_filter resample_filter scale_filter
2034                setpts_filter trim_filter"
2035 avplay_deps="avcodec avformat avresample swscale sdl"
2036 avplay_select="rdft"
2037 avprobe_deps="avcodec avformat"
2038 avserver_deps="avformat fork !shared"
2039 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2040 avserver_extralibs='$ldl'
2041
2042 # documentation
2043 pod2man_deps="doc"
2044 texi2html_deps="doc"
2045
2046 # default parameters
2047
2048 logfile="config.log"
2049
2050 # installation paths
2051 prefix_default="/usr/local"
2052 bindir_default='${prefix}/bin'
2053 datadir_default='${prefix}/share/avconv'
2054 docdir_default='${prefix}/share/doc/libav'
2055 incdir_default='${prefix}/include'
2056 libdir_default='${prefix}/lib'
2057 mandir_default='${prefix}/share/man'
2058 shlibdir_default="$libdir_default"
2059
2060 # toolchain
2061 ar_default="ar"
2062 cc_default="gcc"
2063 host_cc_default="gcc"
2064 cp_f="cp -f"
2065 ln_s="ln -s -f"
2066 nm_default="nm -g"
2067 objformat="elf"
2068 pkg_config_default=pkg-config
2069 ranlib="ranlib"
2070 strip="strip"
2071 yasmexe="yasm"
2072
2073 nogas=":"
2074
2075 # machine
2076 arch_default=$(uname -m)
2077 cpu="generic"
2078
2079 # OS
2080 target_os_default=$(tolower $(uname -s))
2081 host_os=$target_os_default
2082
2083 # configurable options
2084 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2085
2086 enable asm
2087 enable debug
2088 enable doc
2089 enable optimizations
2090 enable safe_bitstream_reader
2091 enable static
2092 enable swscale_alpha
2093
2094 # By default, enable only those hwaccels that have no external dependencies.
2095 enable dxva2 vdpau
2096
2097 # build settings
2098 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2099 LIBPREF="lib"
2100 LIBSUF=".a"
2101 FULLNAME='$(NAME)$(BUILDSUF)'
2102 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2103 SLIBPREF="lib"
2104 SLIBSUF=".so"
2105 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2106 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2107 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2108 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2109 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2110 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2111
2112 asflags_filter=echo
2113 cflags_filter=echo
2114 ldflags_filter=echo
2115
2116 AS_C='-c'
2117 AS_O='-o $@'
2118 CC_C='-c'
2119 CC_E='-E -o $@'
2120 CC_O='-o $@'
2121 LD_O='-o $@'
2122 LD_LIB='-l%'
2123 LD_PATH='-L'
2124 HOSTCC_C='-c'
2125 HOSTCC_E='-E -o $@'
2126 HOSTCC_O='-o $@'
2127 HOSTLD_O='-o $@'
2128
2129 host_libs='-lm'
2130 host_cflags_filter=echo
2131 host_ldflags_filter=echo
2132
2133 target_path='$(CURDIR)'
2134
2135 # since the object filename is not given with the -MM flag, the compiler
2136 # is only able to print the basename, and we must add the path ourselves
2137 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2138 DEPFLAGS='-MM'
2139
2140 # find source path
2141 if test -f configure; then
2142     source_path=.
2143 else
2144     source_path=$(cd $(dirname "$0"); pwd)
2145     echo "$source_path" | grep -q '[[:blank:]]' &&
2146         die "Out of tree builds are impossible with whitespace in source path."
2147     test -e "$source_path/config.h" &&
2148         die "Out of tree builds are impossible with config.h in source dir."
2149 fi
2150
2151 for v in "$@"; do
2152     r=${v#*=}
2153     l=${v%"$r"}
2154     r=$(sh_quote "$r")
2155     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2156 done
2157
2158 find_things(){
2159     thing=$1
2160     pattern=$2
2161     file=$source_path/$3
2162     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2163 }
2164
2165 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2166 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2167 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2168 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2169 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2170 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2171 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2172 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2173 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2174 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2175 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2176
2177 ALL_COMPONENTS="
2178     $BSF_LIST
2179     $DECODER_LIST
2180     $DEMUXER_LIST
2181     $ENCODER_LIST
2182     $FILTER_LIST
2183     $HWACCEL_LIST
2184     $INDEV_LIST
2185     $MUXER_LIST
2186     $OUTDEV_LIST
2187     $PARSER_LIST
2188     $PROTOCOL_LIST
2189 "
2190
2191 for n in $COMPONENT_LIST; do
2192     v=$(toupper ${n%s})_LIST
2193     eval enable \$$v
2194     eval ${n}_if_any="\$$v"
2195 done
2196
2197 enable $ARCH_EXT_LIST
2198
2199 die_unknown(){
2200     echo "Unknown option \"$1\"."
2201     echo "See $0 --help for available options."
2202     exit 1
2203 }
2204
2205 print_3_columns() {
2206     cat | tr ' ' '\n' | sort | pr -r -3 -t
2207 }
2208
2209 show_list() {
2210     suffix=_$1
2211     shift
2212     echo $* | sed s/$suffix//g | print_3_columns
2213     exit 0
2214 }
2215
2216 rand_list(){
2217     IFS=', '
2218     set -- $*
2219     unset IFS
2220     for thing; do
2221         comp=${thing%:*}
2222         prob=${thing#$comp}
2223         prob=${prob#:}
2224         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2225         echo "prob ${prob:-0.5}"
2226         printf '%s\n' $comp
2227     done
2228 }
2229
2230 do_random(){
2231     action=$1
2232     shift
2233     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2234     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2235 }
2236
2237 for opt do
2238     optval="${opt#*=}"
2239     case "$opt" in
2240         --extra-ldflags=*)
2241             add_ldflags $optval
2242         ;;
2243         --extra-libs=*)
2244             add_extralibs $optval
2245         ;;
2246         --disable-devices)
2247             disable $INDEV_LIST $OUTDEV_LIST
2248         ;;
2249         --enable-debug=*)
2250             debuglevel="$optval"
2251         ;;
2252         --disable-programs)
2253             disable $PROGRAM_LIST
2254         ;;
2255         --disable-everything)
2256             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2257         ;;
2258         --disable-all)
2259             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2260             disable $LIBRARY_LIST $PROGRAM_LIST doc
2261         ;;
2262         --enable-random|--disable-random)
2263             action=${opt%%-random}
2264             do_random ${action#--} $COMPONENT_LIST
2265         ;;
2266         --enable-random=*|--disable-random=*)
2267             action=${opt%%-random=*}
2268             do_random ${action#--} $optval
2269         ;;
2270         --enable-*=*|--disable-*=*)
2271             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2272             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2273             eval list=\$$(toupper $thing)_LIST
2274             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2275             $action $(filter "$name" $list)
2276         ;;
2277         --enable-?*|--disable-?*)
2278             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2279             if is_in $option $COMPONENT_LIST; then
2280                 test $action = disable && action=unset
2281                 eval $action \$$(toupper ${option%s})_LIST
2282             elif is_in $option $CMDLINE_SELECT; then
2283                 $action $option
2284             else
2285                 die_unknown $opt
2286             fi
2287         ;;
2288         --list-*)
2289             NAME="${opt#--list-}"
2290             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2291             NAME=${NAME%s}
2292             eval show_list $NAME \$$(toupper $NAME)_LIST
2293         ;;
2294         --help|-h) show_help
2295         ;;
2296         *)
2297             optname="${opt%%=*}"
2298             optname="${optname#--}"
2299             optname=$(echo "$optname" | sed 's/-/_/g')
2300             if is_in $optname $CMDLINE_SET; then
2301                 eval $optname='$optval'
2302             elif is_in $optname $CMDLINE_APPEND; then
2303                 append $optname "$optval"
2304             else
2305                 die_unknown $opt
2306             fi
2307         ;;
2308     esac
2309 done
2310
2311 disabled logging && logfile=/dev/null
2312
2313 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2314 set >> $logfile
2315
2316 test -n "$cross_prefix" && enable cross_compile
2317
2318 if enabled cross_compile; then
2319     test -n "$arch" && test -n "$target_os" ||
2320         die "Must specify target arch and OS when cross-compiling"
2321 fi
2322
2323 ar_default="${cross_prefix}${ar_default}"
2324 cc_default="${cross_prefix}${cc_default}"
2325 nm_default="${cross_prefix}${nm_default}"
2326 pkg_config_default="${cross_prefix}${pkg_config_default}"
2327 ranlib="${cross_prefix}${ranlib}"
2328 strip="${cross_prefix}${strip}"
2329
2330 sysinclude_default="${sysroot}/usr/include"
2331
2332 case "$toolchain" in
2333     clang-asan)
2334         cc_default="clang"
2335         add_cflags  -fsanitize=address
2336         add_ldflags -fsanitize=address
2337     ;;
2338     clang-tsan)
2339         cc_default="clang"
2340         add_cflags  -fsanitize=thread -pie
2341         add_ldflags -fsanitize=thread -pie
2342     ;;
2343     gcc-asan)
2344         cc_default="gcc"
2345         add_cflags  -fsanitize=address
2346         add_ldflags -fsanitize=address
2347     ;;
2348     gcc-tsan)
2349         cc_default="gcc"
2350         add_cflags  -fsanitize=thread -pie -fPIC
2351         add_ldflags -fsanitize=thread -pie -fPIC
2352     ;;
2353     valgrind-massif)
2354         target_exec_default="valgrind"
2355         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2356     ;;
2357     valgrind-memcheck)
2358         target_exec_default="valgrind"
2359         target_exec_args="--track-origins=yes --leak-check=full"
2360     ;;
2361     msvc)
2362         # Check whether the current MSVC version needs the C99 converter.
2363         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2364         # support enough of C99 to build libav. Default to the new
2365         # behaviour if the regexp was unable to match anything, since this
2366         # successfully parses the version number of existing supported
2367         # versions that require the converter (MSVC 2010 and 2012).
2368         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2369         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2370             cc_default="cl"
2371         else
2372             cc_default="c99wrap cl"
2373         fi
2374         ld_default="link"
2375         nm_default="dumpbin -symbols"
2376         ar_default="lib"
2377         target_os_default="win32"
2378         # Use a relative path for TMPDIR. This makes sure all the
2379         # ffconf temp files are written with a relative path, avoiding
2380         # issues with msys/win32 path conversion for MSVC parameters
2381         # such as -Fo<file> or -out:<file>.
2382         TMPDIR=.
2383     ;;
2384     icl)
2385         cc_default="icl"
2386         ld_default="xilink"
2387         nm_default="dumpbin -symbols"
2388         ar_default="xilib"
2389         target_os_default="win32"
2390         TMPDIR=.
2391     ;;
2392     gcov)
2393         add_cflags  -fprofile-arcs -ftest-coverage
2394         add_ldflags -fprofile-arcs -ftest-coverage
2395     ;;
2396     hardened)
2397         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2398         add_ldflags -Wl,-z,relro -Wl,-z,now
2399     ;;
2400     ?*)
2401         die "Unknown toolchain $toolchain"
2402     ;;
2403 esac
2404
2405 set_default arch cc pkg_config sysinclude target_exec target_os
2406 enabled cross_compile || host_cc_default=$cc
2407 set_default host_cc
2408
2409 if ! $pkg_config --version >/dev/null 2>&1; then
2410     warn "$pkg_config not found, library detection may fail."
2411     pkg_config=false
2412 fi
2413
2414 exesuf() {
2415     case $1 in
2416         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2417     esac
2418 }
2419
2420 EXESUF=$(exesuf $target_os)
2421 HOSTEXESUF=$(exesuf $host_os)
2422
2423 # set temporary file name
2424 : ${TMPDIR:=$TEMPDIR}
2425 : ${TMPDIR:=$TMP}
2426 : ${TMPDIR:=/tmp}
2427
2428 if ! check_cmd mktemp -u XXXXXX; then
2429     # simple replacement for missing mktemp
2430     # NOT SAFE FOR GENERAL USE
2431     mktemp(){
2432         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2433     }
2434 fi
2435
2436 tmpfile(){
2437     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2438         (set -C; exec > $tmp) 2>/dev/null ||
2439         die "Unable to create temporary file in $TMPDIR."
2440     append TMPFILES $tmp
2441     eval $1=$tmp
2442 }
2443
2444 trap 'rm -f -- $TMPFILES' EXIT
2445
2446 tmpfile TMPASM .asm
2447 tmpfile TMPC   .c
2448 tmpfile TMPE   $EXESUF
2449 tmpfile TMPH   .h
2450 tmpfile TMPO   .o
2451 tmpfile TMPS   .S
2452 tmpfile TMPSH  .sh
2453 tmpfile TMPV   .ver
2454
2455 unset -f mktemp
2456
2457 chmod +x $TMPE
2458
2459 # make sure we can execute files in $TMPDIR
2460 cat > $TMPSH 2>> $logfile <<EOF
2461 #! /bin/sh
2462 EOF
2463 chmod +x $TMPSH >> $logfile 2>&1
2464 if ! $TMPSH >> $logfile 2>&1; then
2465     cat <<EOF
2466 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2467 variable to another directory and make sure that it is not mounted noexec.
2468 EOF
2469     die "Sanity test failed."
2470 fi
2471
2472 ccc_flags(){
2473     for flag; do
2474         case $flag in
2475             -std=c99)           echo -c99                       ;;
2476             -mcpu=*)            echo -arch ${flag#*=}           ;;
2477             -mieee)             echo -ieee                      ;;
2478             -O*|-fast)          echo $flag                      ;;
2479             -fno-math-errno)    echo -assume nomath_errno       ;;
2480             -g)                 echo -g3                        ;;
2481             -Wall)              echo -msg_enable level2         ;;
2482             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2483             -Wl,*)              echo $flag                      ;;
2484             -f*|-W*)                                            ;;
2485             *)                  echo $flag                      ;;
2486         esac
2487    done
2488 }
2489
2490 cparser_flags(){
2491     for flag; do
2492         case $flag in
2493             -Wno-switch)             echo -Wno-switch-enum ;;
2494             -Wno-format-zero-length) ;;
2495             -Wdisabled-optimization) ;;
2496             -Wno-pointer-sign)       echo -Wno-other ;;
2497             *)                       echo $flag ;;
2498         esac
2499     done
2500 }
2501
2502 msvc_common_flags(){
2503     for flag; do
2504         case $flag in
2505             # In addition to specifying certain flags under the compiler
2506             # specific filters, they must be specified here as well or else the
2507             # generic catch all at the bottom will print the original flag.
2508             -Wall)                ;;
2509             -std=c99)             ;;
2510             # Common flags
2511             -fomit-frame-pointer) ;;
2512             -g)                   echo -Z7 ;;
2513             -fno-math-errno)      ;;
2514             -fno-common)          ;;
2515             -fno-signed-zeros)    ;;
2516             -fPIC)                ;;
2517             -mthumb)              ;;
2518             -march=*)             ;;
2519             -lz)                  echo zlib.lib ;;
2520             -lavifil32)           echo vfw32.lib ;;
2521             -lavicap32)           echo vfw32.lib user32.lib ;;
2522             -l*)                  echo ${flag#-l}.lib ;;
2523             *)                    echo $flag ;;
2524         esac
2525     done
2526 }
2527
2528 msvc_flags(){
2529     msvc_common_flags "$@"
2530     for flag; do
2531         case $flag in
2532             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2533                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2534                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2535                                        -wd4273 ;;
2536         esac
2537     done
2538 }
2539
2540 icl_flags(){
2541     msvc_common_flags "$@"
2542     for flag; do
2543         case $flag in
2544             # Despite what Intel's documentation says -Wall, which is supported
2545             # on Windows, does enable remarks so disable them here.
2546             -Wall)                echo $flag -Qdiag-disable:remark ;;
2547             -std=c99)             echo -Qstd=c99 ;;
2548         esac
2549     done
2550 }
2551
2552 pgi_flags(){
2553     for flag; do
2554         case $flag in
2555             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2556             -fomit-frame-pointer) echo -Mnoframe ;;
2557             -g)                   echo -gopt ;;
2558             *)                    echo $flag ;;
2559         esac
2560     done
2561 }
2562
2563 suncc_flags(){
2564     for flag; do
2565         case $flag in
2566             -march=*|-mcpu=*)
2567                 case "${flag#*=}" in
2568                     native)                   echo -xtarget=native       ;;
2569                     v9|niagara)               echo -xarch=sparc          ;;
2570                     ultrasparc)               echo -xarch=sparcvis       ;;
2571                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2572                     i586|pentium)             echo -xchip=pentium        ;;
2573                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2574                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2575                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2576                     pentium4*)          echo -xtarget=pentium4           ;;
2577                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2578                     *-sse3)             echo -xarch=sse3                 ;;
2579                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2580                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2581                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2582                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2583                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2584                     k8|opteron|athlon64|athlon-fx)
2585                                                echo -xarch=sse2a         ;;
2586                     athlon*)                   echo -xarch=pentium_proa  ;;
2587                 esac
2588                 ;;
2589             -std=c99)             echo -xc99              ;;
2590             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2591             -fPIC)                echo -KPIC -xcode=pic32 ;;
2592             -W*,*)                echo $flag              ;;
2593             -f*-*|-W*|-mimpure-text)                      ;;
2594             -shared)              echo -G                 ;;
2595             *)                    echo $flag              ;;
2596         esac
2597     done
2598 }
2599
2600 tms470_flags(){
2601     for flag; do
2602         case $flag in
2603             -march=*|-mcpu=*)
2604                 case "${flag#*=}" in
2605                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2606                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2607                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2608                     armv6*|arm11*)          echo -mv=6   ;;
2609                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2610                                             echo -mv=5e  ;;
2611                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2612                 esac
2613                 ;;
2614             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2615             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2616             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2617             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2618             -msoft-float)   echo --float_support=vfplib       ;;
2619             -O[0-3]|-mf=*)  echo $flag                        ;;
2620             -g)             echo -g -mn                       ;;
2621             -pds=*)         echo $flag                        ;;
2622             -D*|-I*)        echo $flag                        ;;
2623             --gcc|--abi=*)  echo $flag                        ;;
2624             -me)            echo $flag                        ;;
2625         esac
2626     done
2627 }
2628
2629 probe_cc(){
2630     pfx=$1
2631     _cc=$2
2632
2633     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2634     unset _ld_o _ldflags _ld_lib _ld_path
2635     unset _depflags _DEPCMD _DEPFLAGS
2636     _flags_filter=echo
2637
2638     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2639         _type=llvm_gcc
2640         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2641         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2642         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2643         _cflags_speed='-O3'
2644         _cflags_size='-Os'
2645     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2646         _type=gcc
2647         gcc_version=$($_cc --version | head -n1)
2648         gcc_basever=$($_cc -dumpversion)
2649         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2650         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2651         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2652         if ! $_cc -dumpversion | grep -q '^2\.'; then
2653             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2654         fi
2655         _cflags_speed='-O3'
2656         _cflags_size='-Os'
2657     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2658         _type=icc
2659         _ident=$($_cc --version | head -n1)
2660         _depflags='-MMD'
2661         _cflags_speed='-O3'
2662         _cflags_size='-Os'
2663         _cflags_noopt='-O1'
2664     elif $_cc -v 2>&1 | grep -q xlc; then
2665         _type=xlc
2666         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2667         _cflags_speed='-O5'
2668         _cflags_size='-O5 -qcompact'
2669     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2670         _type=ccc
2671         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2672         _DEPFLAGS='-M'
2673         _cflags_speed='-fast'
2674         _cflags_size='-O1'
2675         _flags_filter=ccc_flags
2676     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2677         test -d "$sysroot" || die "No valid sysroot specified."
2678         _type=armcc
2679         _ident=$($_cc --vsn | head -n1)
2680         armcc_conf="$PWD/armcc.conf"
2681         $_cc --arm_linux_configure                 \
2682              --arm_linux_config_file="$armcc_conf" \
2683              --configure_sysroot="$sysroot"        \
2684              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2685              die "Error creating armcc configuration file."
2686         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2687         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2688         as_default="${cross_prefix}gcc"
2689         _depflags='-MMD'
2690         _cflags_speed='-O3'
2691         _cflags_size='-Os'
2692     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2693         _type=tms470
2694         _ident=$($_cc -version | head -n1 | tr -s ' ')
2695         _flags='--gcc --abi=eabi -me'
2696         _cc_e='-ppl -fe=$@'
2697         _cc_o='-fe=$@'
2698         _depflags='-ppa -ppd=$(@:.o=.d)'
2699         _cflags_speed='-O3 -mf=5'
2700         _cflags_size='-O3 -mf=2'
2701         _flags_filter=tms470_flags
2702     elif $_cc -v 2>&1 | grep -q clang; then
2703         _type=clang
2704         _ident=$($_cc --version | head -n1)
2705         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2706         _cflags_speed='-O3'
2707         _cflags_size='-Os'
2708     elif $_cc -V 2>&1 | grep -q Sun; then
2709         _type=suncc
2710         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2711         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2712         _DEPFLAGS='-xM1 -xc99'
2713         _ldflags='-std=c99'
2714         _cflags_speed='-O5'
2715         _cflags_size='-O5 -xspace'
2716         _flags_filter=suncc_flags
2717     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2718         _type=pathscale
2719         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2720         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2721         _cflags_speed='-O2'
2722         _cflags_size='-Os'
2723         _flags_filter='filter_out -Wdisabled-optimization'
2724     elif $_cc -v 2>&1 | grep -q Open64; then
2725         _type=open64
2726         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2727         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2728         _cflags_speed='-O2'
2729         _cflags_size='-Os'
2730         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2731     elif $_cc -V 2>&1 | grep -q Portland; then
2732         _type=pgi
2733         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2734         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2735         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2736         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2737         _cflags_noopt="-O1"
2738         _flags_filter=pgi_flags
2739     elif $_cc 2>&1 | grep -q Microsoft; then
2740         _type=msvc
2741         _ident=$($cc 2>&1 | head -n1)
2742         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2743         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2744         _cflags_speed="-O2"
2745         _cflags_size="-O1"
2746         if $_cc 2>&1 | grep -q Linker; then
2747             _ld_o='-out:$@'
2748         else
2749             _ld_o='-Fe$@'
2750         fi
2751         _cc_o='-Fo$@'
2752         _cc_e='-P -Fi$@'
2753         _flags_filter=msvc_flags
2754         _ld_lib='lib%.a'
2755         _ld_path='-libpath:'
2756         _flags='-nologo'
2757         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2758         if [ $pfx = hostcc ]; then
2759             append _cflags -Dsnprintf=_snprintf
2760         fi
2761     elif $_cc 2>&1 | grep -q Intel; then
2762         _type=icl
2763         _ident=$($cc 2>&1 | head -n1)
2764         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2765         # Not only is O3 broken on 13.x+ but it is slower on all previous
2766         # versions (tested) as well.
2767         _cflags_speed="-O2"
2768         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2769         if $_cc 2>&1 | grep -q Linker; then
2770             _ld_o='-out:$@'
2771         else
2772             _ld_o='-Fe$@'
2773         fi
2774         _cc_o='-Fo$@'
2775         _cc_e='-P'
2776         _flags_filter=icl_flags
2777         _ld_lib='lib%.a'
2778         _ld_path='-libpath:'
2779         # -Qdiag-error to make icl error when seeing certain unknown arguments
2780         _flags='-nologo -Qdiag-error:4044,10157'
2781         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2782         # with MSVC which enables it by default.
2783         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2784         if [ $pfx = hostcc ]; then
2785             append _cflags -Dsnprintf=_snprintf
2786         fi
2787     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2788         _type=cparser
2789         _ident=$($_cc --version | head -n1)
2790         _depflags='-MMD'
2791         _cflags_speed='-O4'
2792         _cflags_size='-O2'
2793         _flags_filter=cparser_flags
2794     fi
2795
2796     eval ${pfx}_type=\$_type
2797     eval ${pfx}_ident=\$_ident
2798 }
2799
2800 set_ccvars(){
2801     eval ${1}_C=\${_cc_c-\${${1}_C}}
2802     eval ${1}_E=\${_cc_e-\${${1}_E}}
2803     eval ${1}_O=\${_cc_o-\${${1}_O}}
2804
2805     if [ -n "$_depflags" ]; then
2806         eval ${1}_DEPFLAGS=\$_depflags
2807     else
2808         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2809         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2810         eval DEP${1}FLAGS=\$_flags
2811     fi
2812 }
2813
2814 probe_cc cc "$cc"
2815 cflags_filter=$_flags_filter
2816 cflags_speed=$_cflags_speed
2817 cflags_size=$_cflags_size
2818 cflags_noopt=$_cflags_noopt
2819 add_cflags $_flags $_cflags
2820 cc_ldflags=$_ldflags
2821 set_ccvars CC
2822
2823 probe_cc hostcc "$host_cc"
2824 host_cflags_filter=$_flags_filter
2825 add_host_cflags  $_flags $_cflags
2826 set_ccvars HOSTCC
2827
2828 test -n "$cc_type" && enable $cc_type ||
2829     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2830
2831 : ${as_default:=$cc}
2832 : ${dep_cc_default:=$cc}
2833 : ${ld_default:=$cc}
2834 : ${host_ld_default:=$host_cc}
2835 set_default ar as dep_cc ld host_ld
2836
2837 probe_cc as "$as"
2838 asflags_filter=$_flags_filter
2839 add_asflags $_flags $_cflags
2840 set_ccvars AS
2841
2842 probe_cc ld "$ld"
2843 ldflags_filter=$_flags_filter
2844 add_ldflags $_flags $_ldflags
2845 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2846 LD_O=${_ld_o-$LD_O}
2847 LD_LIB=${_ld_lib-$LD_LIB}
2848 LD_PATH=${_ld_path-$LD_PATH}
2849
2850 probe_cc hostld "$host_ld"
2851 host_ldflags_filter=$_flags_filter
2852 add_host_ldflags $_flags $_ldflags
2853 HOSTLD_O=${_ld_o-$HOSTLD_O}
2854
2855 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2856     probe_cc depcc "$dep_cc"
2857     CCDEP=${_DEPCMD:-$DEPCMD}
2858     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2859     DEPCCFLAGS=$_flags
2860 fi
2861
2862 if $ar 2>&1 | grep -q Microsoft; then
2863     arflags="-nologo"
2864     ar_o='-out:$@'
2865 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2866     arflags="rq"
2867     ar_o='$@'
2868 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2869     arflags='-Xany -r -c'
2870     ar_o='$@'
2871 else
2872     arflags="rc"
2873     ar_o='$@'
2874 fi
2875
2876 add_cflags $extra_cflags
2877 add_asflags $extra_cflags
2878
2879 if test -n "$sysroot"; then
2880     case "$cc_type" in
2881         gcc|llvm_gcc|clang)
2882             add_cppflags --sysroot="$sysroot"
2883             add_ldflags --sysroot="$sysroot"
2884         ;;
2885         tms470)
2886             add_cppflags -I"$sysinclude"
2887             add_ldflags  --sysroot="$sysroot"
2888         ;;
2889     esac
2890 fi
2891
2892 if test "$cpu" = host; then
2893     enabled cross_compile &&
2894         die "--cpu=host makes no sense when cross-compiling."
2895
2896     case "$cc_type" in
2897         gcc|llvm_gcc)
2898             check_native(){
2899                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2900                 sed -n "/cc1.*$1=/{
2901                             s/.*$1=\\([^ ]*\\).*/\\1/
2902                             p
2903                             q
2904                         }" $TMPE
2905             }
2906             cpu=$(check_native -march || check_native -mcpu)
2907         ;;
2908     esac
2909
2910     test "${cpu:-host}" = host &&
2911         die "--cpu=host not supported with compiler $cc"
2912 fi
2913
2914 # Deal with common $arch aliases
2915 case "$arch" in
2916     aarch64|arm64)
2917         arch="aarch64"
2918     ;;
2919     arm*)
2920         arch="arm"
2921     ;;
2922     mips*|IP*)
2923         arch="mips"
2924     ;;
2925     parisc*|hppa*)
2926         arch="parisc"
2927     ;;
2928     "Power Macintosh"|ppc*|powerpc*)
2929         arch="ppc"
2930     ;;
2931     s390|s390x)
2932         arch="s390"
2933     ;;
2934     sh4|sh)
2935         arch="sh4"
2936     ;;
2937     sun4u|sparc*)
2938         arch="sparc"
2939     ;;
2940     tilegx|tile-gx)
2941         arch="tilegx"
2942     ;;
2943     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2944         arch="x86"
2945     ;;
2946 esac
2947
2948 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2949 enable $arch
2950
2951 # Add processor-specific flags
2952 if enabled aarch64; then
2953
2954     case $cpu in
2955         armv*)
2956             cpuflags="-march=$cpu"
2957         ;;
2958         *)
2959             cpuflags="-mcpu=$cpu"
2960         ;;
2961     esac
2962
2963 elif enabled alpha; then
2964
2965     cpuflags="-mcpu=$cpu"
2966
2967 elif enabled arm; then
2968
2969     check_arm_arch() {
2970         check_cpp_condition stddef.h \
2971             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2972             $cpuflags
2973     }
2974
2975     probe_arm_arch() {
2976         if   check_arm_arch 4;        then echo armv4;
2977         elif check_arm_arch 4T;       then echo armv4t;
2978         elif check_arm_arch 5;        then echo armv5;
2979         elif check_arm_arch 5E;       then echo armv5e;
2980         elif check_arm_arch 5T;       then echo armv5t;
2981         elif check_arm_arch 5TE;      then echo armv5te;
2982         elif check_arm_arch 5TEJ;     then echo armv5te;
2983         elif check_arm_arch 6;        then echo armv6;
2984         elif check_arm_arch 6J;       then echo armv6j;
2985         elif check_arm_arch 6K;       then echo armv6k;
2986         elif check_arm_arch 6Z;       then echo armv6z;
2987         elif check_arm_arch 6ZK;      then echo armv6zk;
2988         elif check_arm_arch 6T2;      then echo armv6t2;
2989         elif check_arm_arch 7;        then echo armv7;
2990         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2991         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2992         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2993         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2994         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2995         fi
2996     }
2997
2998     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2999
3000     case $cpu in
3001         armv*)
3002             cpuflags="-march=$cpu"
3003             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3004         ;;
3005         *)
3006             cpuflags="-mcpu=$cpu"
3007             case $cpu in
3008                 cortex-a*)                               subarch=armv7a  ;;
3009                 cortex-r*)                               subarch=armv7r  ;;
3010                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3011                 arm11*)                                  subarch=armv6   ;;
3012                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3013                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3014                 *)                             subarch=$(probe_arm_arch) ;;
3015             esac
3016         ;;
3017     esac
3018
3019     case "$subarch" in
3020         armv5t*)    enable fast_clz                ;;
3021         armv[6-8]*) enable fast_clz fast_unaligned ;;
3022     esac
3023
3024 elif enabled avr32; then
3025
3026     case $cpu in
3027         ap7[02]0[0-2])
3028             subarch="avr32_ap"
3029             cpuflags="-mpart=$cpu"
3030         ;;
3031         ap)
3032             subarch="avr32_ap"
3033             cpuflags="-march=$cpu"
3034         ;;
3035         uc3[ab]*)
3036             subarch="avr32_uc"
3037             cpuflags="-mcpu=$cpu"
3038         ;;
3039         uc)
3040             subarch="avr32_uc"
3041             cpuflags="-march=$cpu"
3042         ;;
3043     esac
3044
3045 elif enabled bfin; then
3046
3047     cpuflags="-mcpu=$cpu"
3048
3049 elif enabled mips; then
3050
3051     cpuflags="-march=$cpu"
3052
3053 elif enabled ppc; then
3054
3055     case $(tolower $cpu) in
3056         601|ppc601|powerpc601)
3057             cpuflags="-mcpu=601"
3058             disable altivec
3059         ;;
3060         603*|ppc603*|powerpc603*)
3061             cpuflags="-mcpu=603"
3062             disable altivec
3063         ;;
3064         604*|ppc604*|powerpc604*)
3065             cpuflags="-mcpu=604"
3066             disable altivec
3067         ;;
3068         g3|75*|ppc75*|powerpc75*)
3069             cpuflags="-mcpu=750"
3070             disable altivec
3071         ;;
3072         g4|745*|ppc745*|powerpc745*)
3073             cpuflags="-mcpu=7450"
3074         ;;
3075         74*|ppc74*|powerpc74*)
3076             cpuflags="-mcpu=7400"
3077         ;;
3078         g5|970|ppc970|powerpc970)
3079             cpuflags="-mcpu=970"
3080         ;;
3081         power[3-7]*)
3082             cpuflags="-mcpu=$cpu"
3083         ;;
3084         cell)
3085             cpuflags="-mcpu=cell"
3086             enable ldbrx
3087         ;;
3088         e500mc)
3089             cpuflags="-mcpu=e500mc"
3090             disable altivec
3091         ;;
3092         e500v2)
3093             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3094             disable altivec
3095         ;;
3096         e500)
3097             cpuflags="-mcpu=8540 -mhard-float"
3098             disable altivec
3099         ;;
3100     esac
3101
3102 elif enabled sparc; then
3103
3104     case $cpu in
3105         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3106             cpuflags="-mcpu=$cpu"
3107             disable vis
3108         ;;
3109         ultrasparc*|niagara[234])
3110             cpuflags="-mcpu=$cpu"
3111         ;;
3112     esac
3113
3114 elif enabled x86; then
3115
3116     case $cpu in
3117         i[345]86|pentium)
3118             cpuflags="-march=$cpu"
3119             disable mmx
3120         ;;
3121         # targets that do NOT support nopl and conditional mov (cmov)
3122         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3123             cpuflags="-march=$cpu"
3124             disable i686
3125         ;;
3126         # targets that do support nopl and conditional mov (cmov)
3127         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3128             cpuflags="-march=$cpu"
3129             enable i686
3130             enable fast_cmov
3131         ;;
3132         # targets that do support conditional mov but on which it's slow
3133         pentium4|pentium4m|prescott|nocona)
3134             cpuflags="-march=$cpu"
3135             enable i686
3136             disable fast_cmov
3137         ;;
3138     esac
3139
3140 fi
3141
3142 if [ "$cpu" != generic ]; then
3143     add_cflags  $cpuflags
3144     add_asflags $cpuflags
3145 fi
3146
3147 # compiler sanity check
3148 check_exec <<EOF
3149 int main(void){ return 0; }
3150 EOF
3151 if test "$?" != 0; then
3152     echo "$cc is unable to create an executable file."
3153     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3154         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3155         echo "Only do this if you know what cross compiling means."
3156     fi
3157     die "C compiler test failed."
3158 fi
3159
3160 add_cppflags -D_ISOC99_SOURCE
3161 check_cflags -std=c99
3162 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3163 #include <stdlib.h>
3164 EOF
3165 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3166 #include <stdlib.h>
3167 EOF
3168
3169 add_host_cppflags -D_ISOC99_SOURCE
3170 check_host_cflags -std=c99
3171 check_host_cflags -Wall
3172 check_host_cflags -O3
3173
3174 check_64bit(){
3175     arch32=$1
3176     arch64=$2
3177     expr=$3
3178     check_code cc "" "int test[2*($expr) - 1]" &&
3179         subarch=$arch64 || subarch=$arch32
3180 }
3181
3182 case "$arch" in
3183     aarch64|alpha|ia64)
3184         spic=$shared
3185     ;;
3186     mips)
3187         check_64bit mips mips64 '_MIPS_SIM > 1'
3188         spic=$shared
3189     ;;
3190     parisc)
3191         check_64bit parisc parisc64 'sizeof(void *) > 4'
3192         spic=$shared
3193     ;;
3194     ppc)
3195         check_64bit ppc ppc64 'sizeof(void *) > 4'
3196         spic=$shared
3197     ;;
3198     sparc)
3199         check_64bit sparc sparc64 'sizeof(void *) > 4'
3200         spic=$shared
3201     ;;
3202     x86)
3203         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3204         if test "$subarch" = "x86_64"; then
3205             spic=$shared
3206         fi
3207     ;;
3208 esac
3209
3210 enable $subarch
3211 enabled spic && enable_weak pic
3212
3213 # OS specific
3214 case $target_os in
3215     aix)
3216         SHFLAGS=-shared
3217         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3218         enabled shared && add_ldflags -Wl,-brtl
3219         ;;
3220     haiku)
3221         prefix_default="/boot/common"
3222         network_extralibs="-lnetwork"
3223         host_libs=
3224         ;;
3225     sunos)
3226         SHFLAGS='-shared -Wl,-h,$$(@F)'
3227         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3228         network_extralibs="-lsocket -lnsl"
3229         # When using suncc to build, the Solaris linker will mark
3230         # an executable with each instruction set encountered by
3231         # the Solaris assembler.  As our libraries contain their own
3232         # guards for processor-specific code, instead suppress
3233         # generation of the HWCAPS ELF section on Solaris x86 only.
3234         enabled_all suncc x86 &&
3235             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3236             add_ldflags -Wl,-M,mapfile
3237         nm_default='nm -P -g'
3238         ;;
3239     netbsd)
3240         disable symver
3241         oss_indev_extralibs="-lossaudio"
3242         oss_outdev_extralibs="-lossaudio"
3243         ;;
3244     openbsd|bitrig)
3245         disable symver
3246         SHFLAGS='-shared'
3247         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3248         SLIB_INSTALL_LINKS=
3249         oss_indev_extralibs="-lossaudio"
3250         oss_outdev_extralibs="-lossaudio"
3251         ;;
3252     dragonfly)
3253         disable symver
3254         ;;
3255     freebsd)
3256         ;;
3257     bsd/os)
3258         add_extralibs -lpoll -lgnugetopt
3259         ;;
3260     darwin)
3261         gas="gas-preprocessor.pl $cc"
3262         enabled ppc && add_asflags -force_cpusubtype_ALL
3263         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3264         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3265         add_ldflags -Wl,-dynamic,-search_paths_first
3266         SLIBSUF=".dylib"
3267         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3268         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3269         objformat="macho"
3270         enabled x86_64 && objformat="macho64"
3271         enabled_any pic shared ||
3272             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3273         ;;
3274     mingw32*)
3275         if test $target_os = "mingw32ce"; then
3276             disable network
3277         else
3278             target_os=mingw32
3279         fi
3280         LIBTARGET=i386
3281         if enabled x86_64; then
3282             LIBTARGET="i386:x86-64"
3283         elif enabled arm; then
3284             LIBTARGET=arm-wince
3285         fi
3286         check_ldflags -Wl,--nxcompat
3287         check_ldflags -Wl,--dynamicbase
3288         shlibdir_default="$bindir_default"
3289         SLIBPREF=""
3290         SLIBSUF=".dll"
3291         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3292         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3293         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3294         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3295         SLIB_INSTALL_LINKS=
3296         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3297         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3298         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3299         objformat="win32"
3300         dlltool="${cross_prefix}dlltool"
3301         ranlib=:
3302         enable dos_paths
3303         ;;
3304     win32|win64)
3305         disable symver
3306         if enabled shared; then
3307             # Link to the import library instead of the normal static library
3308             # for shared libs.
3309             LD_LIB='%.lib'
3310             # Cannot build both shared and static libs with MSVC or icl.
3311             disable static
3312         fi
3313         shlibdir_default="$bindir_default"
3314         SLIBPREF=""
3315         SLIBSUF=".dll"
3316         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3317         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3318         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3319         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3320         SLIB_INSTALL_LINKS=
3321         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3322         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3323         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3324         objformat="win32"
3325         ranlib=:
3326         enable dos_paths
3327         ;;
3328     cygwin*)
3329         target_os=cygwin
3330         shlibdir_default="$bindir_default"
3331         SLIBPREF="cyg"
3332         SLIBSUF=".dll"
3333         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3334         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3335         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3336         SLIB_INSTALL_LINKS=
3337         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3338         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3339         objformat="win32"
3340         enable dos_paths
3341         ;;
3342     *-dos|freedos|opendos)
3343         network_extralibs="-lsocket"
3344         objformat="coff"
3345         enable dos_paths
3346         add_cppflags -U__STRICT_ANSI__
3347         ;;
3348     linux)
3349         enable dv1394
3350         ;;
3351     irix*)
3352         target_os=irix
3353         ranlib="echo ignoring ranlib"
3354         ;;
3355     os/2*)
3356         ln_s="cp -f"
3357         objformat="aout"
3358         add_cppflags -D_GNU_SOURCE
3359         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3360         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3361         LIBSUF="_s.a"
3362         SLIBPREF=""
3363         SLIBSUF=".dll"
3364         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3365         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3366         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3367             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3368             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3369             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3370             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3371             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3372         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3373             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3374         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3375         enable dos_paths
3376         ;;
3377     gnu/kfreebsd)
3378         add_cppflags -D_BSD_SOURCE
3379         ;;
3380     gnu)
3381         ;;
3382     qnx)
3383         add_cppflags -D_QNX_SOURCE
3384         network_extralibs="-lsocket"
3385         ;;
3386     symbian)
3387         SLIBSUF=".dll"
3388         enable dos_paths
3389         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3390         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3391         add_ldflags -Wl,--target1-abs,--no-undefined \
3392                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3393                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3394         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3395                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3396                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3397         ;;
3398     osf1)
3399         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3400         ;;
3401     minix)
3402         ;;
3403     plan9)
3404         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3405                      -D_REENTRANT_SOURCE        \
3406                      -D_RESEARCH_SOURCE         \
3407                      -DFD_SETSIZE=96            \
3408                      -DHAVE_SOCK_OPTS
3409         add_compat strtod.o strtod=avpriv_strtod
3410         network_extralibs='-lbsd'
3411         exeobjs=compat/plan9/main.o
3412         disable avserver
3413         cp_f='cp'
3414         ;;
3415     none)
3416         ;;
3417     *)
3418         die "Unknown OS '$target_os'."
3419         ;;
3420 esac
3421
3422 # determine libc flavour
3423
3424 probe_libc(){
3425     pfx=$1
3426     pfx_no_=${pfx%_}
3427     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3428     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3429         eval ${pfx}libc_type=uclibc
3430         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3431     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3432         eval ${pfx}libc_type=glibc
3433         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3434     # MinGW headers can be installed on Cygwin, so check for newlib first.
3435     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3436         eval ${pfx}libc_type=newlib
3437         add_${pfx}cppflags -U__STRICT_ANSI__
3438     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3439     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3440         eval ${pfx}libc_type=mingw64
3441         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3442         eval test \$${pfx_no_}cc_type = "gcc" &&
3443             add_${pfx}cppflags -D__printf__=__gnu_printf__
3444     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3445          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3446         eval ${pfx}libc_type=mingw32
3447         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3448             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3449             die "ERROR: MinGW32 runtime version must be >= 3.15."
3450         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3451         eval test \$${pfx_no_}cc_type = "gcc" &&
3452             add_${pfx}cppflags -D__printf__=__gnu_printf__
3453     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3454         eval ${pfx}libc_type=msvcrt
3455         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3456         # 0x601 by default unless something else is set by the user.
3457         # This can easily lead to us detecting functions only present
3458         # in such new versions and producing binaries requiring windows 7.0.
3459         # Therefore explicitly set the default to XP unless the user has
3460         # set something else on the command line.
3461         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3462             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3463     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3464         eval ${pfx}libc_type=klibc
3465     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3466         eval ${pfx}libc_type=bionic
3467     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3468         eval ${pfx}libc_type=solaris
3469         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3470     fi
3471 }
3472
3473 probe_libc
3474 test -n "$libc_type" && enable libc_$libc_type
3475 probe_libc host_
3476 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3477
3478 case $libc_type in
3479     bionic)
3480         add_compat strtod.o strtod=avpriv_strtod
3481         ;;
3482     msvcrt)
3483         add_compat strtod.o strtod=avpriv_strtod
3484         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3485                                      _snprintf=avpriv_snprintf  \
3486                                      vsnprintf=avpriv_vsnprintf
3487         ;;
3488 esac
3489
3490 # hacks for compiler/libc/os combinations
3491
3492 if enabled_all tms470 libc_glibc; then
3493     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3494     add_cppflags -D__USER_LABEL_PREFIX__=
3495     add_cppflags -D__builtin_memset=memset
3496     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3497     add_cflags   -pds=48    # incompatible redefinition of macro
3498 fi
3499
3500 if enabled_all ccc libc_glibc; then
3501     add_ldflags -Wl,-z,now  # calls to libots crash without this
3502 fi
3503
3504 esc(){
3505     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3506 }
3507
3508 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3509
3510 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3511
3512 set_default $PATHS_LIST
3513 set_default nm
3514
3515 # we need to build at least one lib type
3516 if ! enabled_any static shared; then
3517     cat <<EOF
3518 At least one library type must be built.
3519 Specify --enable-static to build the static libraries or --enable-shared to
3520 build the shared libraries as well. To only build the shared libraries specify
3521 --disable-static in addition to --enable-shared.
3522 EOF
3523     exit 1;
3524 fi
3525
3526 die_license_disabled() {
3527     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3528 }
3529
3530 die_license_disabled gpl libcdio
3531 die_license_disabled gpl libx264
3532 die_license_disabled gpl libxavs
3533 die_license_disabled gpl libxvid
3534 die_license_disabled gpl x11grab
3535
3536 die_license_disabled nonfree libfaac
3537 die_license_disabled nonfree libfdk_aac
3538 die_license_disabled nonfree openssl
3539
3540 die_license_disabled version3 libopencore_amrnb
3541 die_license_disabled version3 libopencore_amrwb
3542 die_license_disabled version3 libvo_aacenc
3543 die_license_disabled version3 libvo_amrwbenc
3544
3545 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3546
3547 disabled optimizations || check_cflags -fomit-frame-pointer
3548
3549 enable_weak_pic() {
3550     disabled pic && return
3551     enable pic
3552     add_cppflags -DPIC
3553     case "$target_os" in
3554     mingw*|cygwin*)
3555         ;;
3556     *)
3557         add_cflags -fPIC
3558         ;;
3559     esac
3560     add_asflags  -fPIC
3561 }
3562
3563 enabled pic && enable_weak_pic
3564
3565 check_cc <<EOF || die "Symbol mangling check failed."
3566 int ff_extern;
3567 EOF
3568 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3569 extern_prefix=${sym%%ff_extern*}
3570
3571 check_cc <<EOF && enable_weak inline_asm
3572 void foo(void) { __asm__ volatile ("" ::); }
3573 EOF
3574
3575 _restrict=
3576 for restrict_keyword in restrict __restrict__ __restrict; do
3577     check_cc <<EOF && _restrict=$restrict_keyword && break
3578 void foo(char * $restrict_keyword p);
3579 EOF
3580 done
3581
3582 check_cc <<EOF && enable pragma_deprecated
3583 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3584 EOF
3585
3586 check_cc <<EOF && enable attribute_packed
3587 struct { int x; } __attribute__((packed)) x;
3588 EOF
3589
3590 check_cc <<EOF && enable attribute_may_alias
3591 union { int x; } __attribute__((may_alias)) x;
3592 EOF
3593
3594 check_cc <<EOF || die "endian test failed"
3595 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3596 EOF
3597 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3598
3599 check_inline_asm inline_asm_labels '"1:\n"'
3600
3601 if enabled aarch64; then
3602     # internal assembler in clang 3.3 does not support this instruction
3603     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3604     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3605
3606     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3607
3608 elif enabled alpha; then
3609
3610     check_cflags -mieee
3611
3612 elif enabled arm; then
3613
3614     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3615     enabled thumb && check_cflags -mthumb || check_cflags -marm
3616     nogas=die
3617
3618     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3619         enable vfp_args
3620     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3621         case "${cross_prefix:-$cc}" in
3622             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3623             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3624 __asm__ (".eabi_attribute 28, 1");
3625 int main(void) { return 0; }
3626 EOF
3627         esac
3628         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3629     fi
3630
3631     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3632     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3633     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3634     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3635     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3636     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3637
3638     [ $target_os = linux ] ||
3639         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3640             $ARCH_EXT_LIST_ARM
3641
3642     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3643     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3644
3645     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3646
3647 elif enabled mips; then
3648
3649     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3650
3651 elif enabled parisc; then
3652
3653     if enabled gcc; then
3654         case $($cc -dumpversion) in
3655             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3656         esac
3657     fi
3658
3659 elif enabled ppc; then
3660
3661     enable local_aligned_8 local_aligned_16
3662
3663     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3664     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3665     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3666     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3667
3668     # AltiVec flags: The FSF version of GCC differs from the Apple version
3669     if enabled altivec; then
3670         nogas=warn
3671         check_cflags -maltivec -mabi=altivec &&
3672         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3673         check_cflags -faltivec
3674
3675         # check if our compiler supports Motorola AltiVec C API
3676         check_cc <<EOF || disable altivec
3677 $inc_altivec_h
3678 int main(void) {
3679     vector signed int v1 = (vector signed int) { 0 };
3680     vector signed int v2 = (vector signed int) { 1 };
3681     v1 = vec_add(v1, v2);
3682     return 0;
3683 }
3684 EOF
3685
3686         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3687     fi
3688
3689 elif enabled sparc; then
3690
3691     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3692
3693 elif enabled x86; then
3694
3695     check_builtin rdtsc    intrin.h   "__rdtsc()"
3696     check_builtin mm_empty mmintrin.h "_mm_empty()"
3697
3698     enable local_aligned_8 local_aligned_16
3699
3700     # check whether EBP is available on x86
3701     # As 'i' is stored on the stack, this program will crash
3702     # if the base pointer is used to access it because the
3703     # base pointer is cleared in the inline assembly code.
3704     check_exec_crash <<EOF && enable ebp_available
3705 volatile int i=0;
3706 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3707 return i;
3708 EOF
3709
3710     # check whether EBX is available on x86
3711     check_inline_asm ebx_available '""::"b"(0)' &&
3712         check_inline_asm ebx_available '"":::"%ebx"'
3713
3714     # check whether xmm clobbers are supported
3715     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3716
3717     # check whether binutils is new enough to compile SSSE3/MMXEXT
3718     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3719     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3720
3721     if ! disabled_any asm mmx yasm; then
3722         if check_cmd $yasmexe --version; then
3723             enabled x86_64 && yasm_extra="-m amd64"
3724             yasm_debug="-g dwarf2"
3725         elif check_cmd nasm -v; then
3726             yasmexe=nasm
3727             yasm_debug="-g -F dwarf"
3728             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3729         fi
3730
3731         YASMFLAGS="-f $objformat $yasm_extra"
3732         enabled pic               && append YASMFLAGS "-DPIC"
3733         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3734         case "$objformat" in
3735             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3736         esac
3737
3738         check_yasm "movbe ecx, [5]" && enable yasm ||
3739             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3740         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3741         check_yasm "CPU amdnop" && enable cpunop
3742     fi
3743
3744     case "$cpu" in
3745         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3746             disable fast_clz
3747         ;;
3748     esac
3749
3750 fi
3751
3752 if enabled asm; then
3753     as=${gas:=$as}
3754     check_as <<EOF && enable gnu_as || \
3755         $nogas "GNU assembler not found, install gas-preprocessor"
3756 .macro m n
3757 \n: .int 0
3758 .endm
3759 m x
3760 EOF
3761 fi
3762
3763 check_ldflags -Wl,--as-needed
3764
3765 if check_func dlopen; then
3766     ldl=
3767 elif check_func dlopen -ldl; then
3768     ldl=-ldl
3769 fi
3770
3771 if ! disabled network; then
3772     check_type "sys/types.h sys/socket.h" socklen_t
3773     check_type netdb.h "struct addrinfo"
3774     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3775     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3776     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3777     check_type netinet/in.h "struct sockaddr_in6"
3778     check_type poll.h "struct pollfd"
3779     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3780     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3781     check_type netinet/sctp.h "struct sctp_event_subscribe"
3782     check_func getaddrinfo $network_extralibs
3783     check_func getservbyport $network_extralibs
3784     # Prefer arpa/inet.h over winsock2
3785     if check_header arpa/inet.h ; then
3786         check_func closesocket
3787     elif check_header winsock2.h ; then
3788         check_func_headers winsock2.h closesocket -lws2 &&
3789             network_extralibs="-lws2" ||
3790         { check_func_headers winsock2.h closesocket -lws2_32 &&
3791             network_extralibs="-lws2_32"; } || disable winsock2_h network
3792         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3793         check_type ws2tcpip.h socklen_t
3794         check_type ws2tcpip.h "struct addrinfo"
3795         check_type ws2tcpip.h "struct group_source_req"
3796         check_type ws2tcpip.h "struct ip_mreq_source"
3797         check_type ws2tcpip.h "struct ipv6_mreq"
3798         check_type winsock2.h "struct pollfd"
3799         check_type ws2tcpip.h "struct sockaddr_in6"
3800         check_type ws2tcpip.h "struct sockaddr_storage"
3801         check_struct winsock2.h "struct sockaddr" sa_len
3802     else
3803         disable network
3804     fi
3805 fi
3806
3807 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3808 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3809
3810 check_func  fcntl
3811 check_func  fork
3812 check_func_headers stdlib.h getenv
3813 check_func  gethrtime
3814 check_func  getopt
3815 check_func  getrusage
3816 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3817 check_func  gettimeofday
3818 check_func  inet_aton $network_extralibs
3819 check_func  isatty
3820 check_func  localtime_r
3821 check_func  ${malloc_prefix}memalign            && enable memalign
3822 check_func  mkstemp
3823 check_func  mmap
3824 check_func  mprotect
3825 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3826 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3827 check_func  setrlimit
3828 check_func  strerror_r
3829 check_func  strptime
3830 check_func  strtok_r
3831 check_func  sched_getaffinity
3832 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3833 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3834 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3835 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3836 check_func  sysconf
3837 check_func  sysctl
3838 check_func  usleep
3839 check_func_headers io.h setmode
3840 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3841 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3842 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3843 check_func_headers windows.h GetProcessAffinityMask
3844 check_func_headers windows.h GetProcessTimes
3845 check_func_headers windows.h GetSystemTimeAsFileTime
3846 check_func_headers windows.h MapViewOfFile
3847 check_func_headers windows.h SetConsoleTextAttribute
3848 check_func_headers windows.h Sleep
3849 check_func_headers windows.h VirtualAlloc
3850
3851 check_header direct.h
3852 check_header dlfcn.h
3853 check_header dxva.h
3854 check_header dxva2api.h
3855 check_header io.h
3856 check_header malloc.h
3857 check_header poll.h
3858 check_header sys/mman.h
3859 check_header sys/param.h
3860 check_header sys/resource.h
3861 check_header sys/select.h
3862 check_header sys/time.h
3863 check_header sys/un.h
3864 check_header unistd.h
3865 check_header vdpau/vdpau.h
3866 check_header vdpau/vdpau_x11.h
3867 check_header VideoDecodeAcceleration/VDADecoder.h
3868 check_header windows.h
3869 check_header X11/extensions/XvMClib.h
3870
3871 if ! disabled w32threads && ! enabled pthreads; then
3872     check_func_headers "windows.h process.h" _beginthreadex &&
3873         enable w32threads || disable w32threads
3874 fi
3875
3876 # check for some common methods of building with pthread support
3877 # do this before the optional library checks as some of them require pthreads
3878 if ! disabled pthreads && ! enabled w32threads; then
3879     enable pthreads
3880     if check_func pthread_join -pthread; then
3881         add_cflags -pthread
3882         add_extralibs -pthread
3883     elif check_func pthread_join -pthreads; then
3884         add_cflags -pthreads
3885         add_extralibs -pthreads
3886     elif check_func pthread_join -lpthreadGC2; then
3887         add_extralibs -lpthreadGC2
3888     elif check_lib pthread.h pthread_join -lpthread; then
3889         :
3890     elif ! check_func pthread_join; then
3891         disable pthreads
3892     fi
3893 fi
3894
3895 for thread in $THREADS_LIST; do
3896     if enabled $thread; then
3897         test -n "$thread_type" &&
3898             die "ERROR: Only one thread type must be selected." ||
3899             thread_type="$thread"
3900     fi
3901 done
3902
3903 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3904 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3905
3906 check_lib math.h sin -lm && LIBM="-lm"
3907 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3908
3909 atan2f_args=2
3910 ldexpf_args=2
3911 powf_args=2
3912
3913 for func in $MATH_FUNCS; do
3914     eval check_mathfunc $func \${${func}_args:-1}
3915 done
3916
3917 # these are off by default, so fail if requested and not available
3918 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3919                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3920                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3921 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3922 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3923 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3924 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3925 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3926 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3927                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3928                                done || die "ERROR: libgsm not found"; }
3929 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3930 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3931 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3932 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3933 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3934 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3935 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3936 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3937 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3938 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3939 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3940 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3941 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3942 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3943 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3944 enabled libvpx            && {
3945     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3946                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3947     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3948                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3949     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3950     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3951 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3952 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3953 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3954                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3955                                die "ERROR: libx264 version must be >= 0.118."; }
3956 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3957 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3958 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3959                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3960                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3961                                die "ERROR: openssl not found"; }
3962
3963 if enabled gnutls; then
3964     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3965     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3966 fi
3967
3968 # libdc1394 check
3969 if enabled libdc1394; then
3970     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3971         enable libdc1394_2; } ||
3972     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3973         enable libdc1394_1; } ||
3974     die "ERROR: No version of libdc1394 found "
3975 fi
3976
3977 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3978     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3979     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3980     enable sdl
3981 fi
3982
3983 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
3984 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3985
3986 check_header linux/fb.h
3987 check_header linux/videodev2.h
3988 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3989
3990 check_header sys/videoio.h
3991
3992 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3993 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3994 # w32api 3.12 had it defined wrong
3995 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3996
3997 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3998 { check_header dev/bktr/ioctl_meteor.h &&
3999   check_header dev/bktr/ioctl_bt848.h; } ||
4000 { check_header machine/ioctl_meteor.h &&
4001   check_header machine/ioctl_bt848.h; } ||
4002 { check_header dev/video/meteor/ioctl_meteor.h &&
4003   check_header dev/video/bktr/ioctl_bt848.h; } ||
4004 check_header dev/ic/bt8xx.h
4005
4006 check_header sndio.h
4007 check_header sys/soundcard.h
4008 check_header soundcard.h
4009
4010 enabled_any alsa_indev alsa_outdev &&
4011     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4012
4013 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4014     check_func jack_port_get_latency_range -ljack
4015
4016 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4017
4018 if enabled libcdio; then
4019     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4020     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4021 fi
4022
4023 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4024
4025 enabled x11grab                                           &&
4026 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4027 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4028 { enabled xlib || die "ERROR: Xlib not found"; }
4029
4030 enabled vdpau &&
4031     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4032     disable vdpau
4033
4034 enabled vdpau && enabled xlib &&
4035     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4036     enable vdpau_x11
4037
4038 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4039
4040 # add some useful compiler flags if supported
4041 check_cflags -Wdeclaration-after-statement
4042 check_cflags -Wall
4043 check_cflags -Wdisabled-optimization
4044 check_cflags -Wpointer-arith
4045 check_cflags -Wredundant-decls
4046 check_cflags -Wcast-qual
4047 check_cflags -Wwrite-strings
4048 check_cflags -Wtype-limits
4049 check_cflags -Wundef
4050 check_cflags -Wmissing-prototypes
4051 check_cflags -Wstrict-prototypes
4052 enabled extra_warnings && check_cflags -Winline
4053
4054 check_disable_warning(){
4055     warning_flag=-W${1#-Wno-}
4056     test_cflags $warning_flag && add_cflags $1
4057 }
4058
4059 check_disable_warning -Wno-parentheses
4060 check_disable_warning -Wno-switch
4061 check_disable_warning -Wno-format-zero-length
4062 check_disable_warning -Wno-pointer-sign
4063
4064 # add some linker flags
4065 check_ldflags -Wl,--warn-common
4066 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4067 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4068
4069 # add some strip flags
4070 # -wN '..@*' is more selective than -x, but not available everywhere.
4071 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4072
4073 enabled neon_clobber_test &&
4074     check_ldflags -Wl,--wrap,avcodec_open2              \
4075                   -Wl,--wrap,avcodec_decode_audio4      \
4076                   -Wl,--wrap,avcodec_decode_video2      \
4077                   -Wl,--wrap,avcodec_decode_subtitle2   \
4078                   -Wl,--wrap,avcodec_encode_audio2      \
4079                   -Wl,--wrap,avcodec_encode_video2      \
4080                   -Wl,--wrap,avcodec_encode_subtitle    \
4081                   -Wl,--wrap,avresample_convert ||
4082     disable neon_clobber_test
4083
4084 enabled xmm_clobber_test &&
4085     check_ldflags -Wl,--wrap,avcodec_open2              \
4086                   -Wl,--wrap,avcodec_decode_audio4      \
4087                   -Wl,--wrap,avcodec_decode_video2      \
4088                   -Wl,--wrap,avcodec_decode_subtitle2   \
4089                   -Wl,--wrap,avcodec_encode_audio2      \
4090                   -Wl,--wrap,avcodec_encode_video2      \
4091                   -Wl,--wrap,avcodec_encode_subtitle    \
4092                   -Wl,--wrap,avresample_convert         \
4093                   -Wl,--wrap,sws_scale ||
4094     disable xmm_clobber_test
4095
4096 echo "X{};" > $TMPV
4097 if test_ldflags -Wl,--version-script,$TMPV; then
4098     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4099     check_cc <<EOF && enable symver_asm_label
4100 void ff_foo(void) __asm__ ("av_foo@VERSION");
4101 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4102 EOF
4103     check_cc <<EOF && enable symver_gnu_asm
4104 __asm__(".symver ff_foo,av_foo@VERSION");
4105 void ff_foo(void) {}
4106 EOF
4107 fi
4108
4109 if [ -z "$optflags" ]; then
4110     if enabled small; then
4111         optflags=$cflags_size
4112     elif enabled optimizations; then
4113         optflags=$cflags_speed
4114     else
4115         optflags=$cflags_noopt
4116     fi
4117 fi
4118
4119 check_optflags(){
4120     check_cflags "$@"
4121     enabled lto && check_ldflags "$@"
4122 }
4123
4124
4125 if enabled lto; then
4126     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4127     check_cflags  -flto
4128     check_ldflags -flto $cpuflags
4129 fi
4130
4131 check_optflags $optflags
4132 check_optflags -fno-math-errno
4133 check_optflags -fno-signed-zeros
4134
4135 if enabled icc; then
4136     # Just warnings, no remarks
4137     check_cflags -w1
4138     # -wd: Disable following warnings
4139     # 144, 167, 556: -Wno-pointer-sign
4140     # 1292: attribute "foo" ignored
4141     # 1419: external declaration in primary source file
4142     # 10006: ignoring unknown option -fno-signed-zeros
4143     # 10148: ignoring unknown option -Wno-parentheses
4144     # 10156: ignoring option '-W'; no argument required
4145     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4146     # 11030: Warning unknown option --as-needed
4147     # 10156: ignoring option '-export'; no argument required
4148     check_ldflags -wd10156,11030
4149     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4150     enable ebp_available
4151     if enabled x86_32; then
4152         icc_version=$($cc -dumpversion)
4153         test ${icc_version%%.*} -ge 11 &&
4154             check_cflags -falign-stack=maintain-16-byte ||
4155             disable aligned_stack
4156     fi
4157 elif enabled ccc; then
4158     # disable some annoying warnings
4159     add_cflags -msg_disable bitnotint
4160     add_cflags -msg_disable mixfuncvoid
4161     add_cflags -msg_disable nonstandcast
4162     add_cflags -msg_disable unsupieee
4163 elif enabled gcc; then
4164     check_optflags -fno-tree-vectorize
4165     check_cflags -Werror=implicit-function-declaration
4166     check_cflags -Werror=missing-prototypes
4167     check_cflags -Werror=return-type
4168     check_cflags -Werror=declaration-after-statement
4169     check_cflags -Werror=vla
4170     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4171 elif enabled llvm_gcc; then
4172     check_cflags -mllvm -stack-alignment=16
4173 elif enabled clang; then
4174     check_cflags -mllvm -stack-alignment=16
4175     check_cflags -Qunused-arguments
4176     check_cflags -Werror=implicit-function-declaration
4177     check_cflags -Werror=missing-prototypes
4178     check_cflags -Werror=return-type
4179 elif enabled cparser; then
4180     add_cflags -Wno-missing-variable-declarations
4181     add_cflags -Wno-empty-statement
4182 elif enabled armcc; then
4183     # 2523: use of inline assembler is deprecated
4184     add_cflags -W${armcc_opt},--diag_suppress=2523
4185     add_cflags -W${armcc_opt},--diag_suppress=1207
4186     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4187     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4188     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4189     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4190 elif enabled tms470; then
4191     add_cflags -pds=824 -pds=837
4192     disable inline_asm
4193 elif enabled pathscale; then
4194     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4195 elif enabled_any msvc icl; then
4196     enabled x86_32 && disable aligned_stack
4197     enabled_all x86_32 debug && add_cflags -Oy-
4198     enabled debug && add_ldflags -debug
4199     enable pragma_deprecated
4200     if enabled icl; then
4201         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4202         # (correctly) on icl 13.x.
4203         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4204             add_cflags -Qansi-alias
4205         # icl will pass the inline asm tests but inline asm is currently
4206         # not supported (build will fail)
4207         disable inline_asm
4208     fi
4209 fi
4210
4211 case $target_os in
4212     osf1)
4213         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4214     ;;
4215     plan9)
4216         add_cppflags -Dmain=plan9_main
4217     ;;
4218 esac
4219
4220 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4221
4222 check_deps $CONFIG_LIST       \
4223            $CONFIG_EXTRA      \
4224            $HAVE_LIST         \
4225            $ALL_COMPONENTS    \
4226
4227 ! enabled_any memalign posix_memalign aligned_malloc &&
4228     enabled_any $need_memalign && enable memalign_hack
4229
4230 echo "install prefix            $prefix"
4231 echo "source path               $source_path"
4232 echo "C compiler                $cc"
4233 echo "C library                 $libc_type"
4234 if test "$host_cc" != "$cc"; then
4235     echo "host C compiler           $host_cc"
4236     echo "host C library            $host_libc_type"
4237 fi
4238 echo "ARCH                      $arch ($cpu)"
4239 if test "$build_suffix" != ""; then
4240     echo "build suffix              $build_suffix"
4241 fi
4242 if test "$extra_version" != ""; then
4243     echo "version string suffix     $extra_version"
4244 fi
4245 echo "big-endian                ${bigendian-no}"
4246 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4247 if enabled x86; then
4248     echo "${yasmexe}                      ${yasm-no}"
4249     echo "MMX enabled               ${mmx-no}"
4250     echo "MMXEXT enabled            ${mmxext-no}"
4251     echo "3DNow! enabled            ${amd3dnow-no}"
4252     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4253     echo "SSE enabled               ${sse-no}"
4254     echo "SSSE3 enabled             ${ssse3-no}"
4255     echo "AVX enabled               ${avx-no}"
4256     echo "FMA4 enabled              ${fma4-no}"
4257     echo "i686 features enabled     ${i686-no}"
4258     echo "CMOV is fast              ${fast_cmov-no}"
4259     echo "EBX available             ${ebx_available-no}"
4260     echo "EBP available             ${ebp_available-no}"
4261 fi
4262 if enabled aarch64; then
4263     echo "NEON enabled              ${neon-no}"
4264     echo "VFP enabled               ${vfp-no}"
4265 fi
4266 if enabled arm; then
4267     echo "ARMv5TE enabled           ${armv5te-no}"
4268     echo "ARMv6 enabled             ${armv6-no}"
4269     echo "ARMv6T2 enabled           ${armv6t2-no}"
4270     echo "VFP enabled               ${vfp-no}"
4271     echo "NEON enabled              ${neon-no}"
4272 fi
4273 if enabled ppc; then
4274     echo "AltiVec enabled           ${altivec-no}"
4275     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4276     echo "dcbzl available           ${dcbzl-no}"
4277 fi
4278 if enabled sparc; then
4279     echo "VIS enabled               ${vis-no}"
4280 fi
4281 echo "debug symbols             ${debug-no}"
4282 echo "optimize for size         ${small-no}"
4283 echo "optimizations             ${optimizations-no}"
4284 echo "static                    ${static-no}"
4285 echo "shared                    ${shared-no}"
4286 echo "new filter support        ${avfilter-no}"
4287 echo "network support           ${network-no}"
4288 echo "threading support         ${thread_type-no}"
4289 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4290 echo "SDL support               ${sdl-no}"
4291 test -n "$random_seed" &&
4292     echo "random seed               ${random_seed}"
4293 echo
4294
4295 echo "External libraries:"
4296 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4297 echo
4298
4299 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4300     echo "Enabled ${type}s:"
4301     eval list=\$$(toupper $type)_LIST
4302     print_enabled '_*' $list | print_3_columns
4303     echo
4304 done
4305
4306 license="LGPL version 2.1 or later"
4307 if enabled nonfree; then
4308     license="nonfree and unredistributable"
4309 elif enabled gplv3; then
4310     license="GPL version 3 or later"
4311 elif enabled lgplv3; then
4312     license="LGPL version 3 or later"
4313 elif enabled gpl; then
4314     license="GPL version 2 or later"
4315 fi
4316
4317 echo "License: $license"
4318
4319 echo "Creating config.mak and config.h..."
4320
4321 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4322
4323 config_files="$TMPH config.mak"
4324
4325 cat > config.mak <<EOF
4326 # Automatically generated by configure - do not modify!
4327 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4328 prefix=$prefix
4329 LIBDIR=\$(DESTDIR)$libdir
4330 SHLIBDIR=\$(DESTDIR)$shlibdir
4331 INCDIR=\$(DESTDIR)$incdir
4332 BINDIR=\$(DESTDIR)$bindir
4333 DATADIR=\$(DESTDIR)$datadir
4334 DOCDIR=\$(DESTDIR)$docdir
4335 MANDIR=\$(DESTDIR)$mandir
4336 SRC_PATH=$source_path
4337 CC_IDENT=$cc_ident
4338 ARCH=$arch
4339 CC=$cc
4340 AS=$as
4341 LD=$ld
4342 DEPCC=$dep_cc
4343 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4344 DEPAS=$as
4345 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4346 YASM=$yasmexe
4347 DEPYASM=$yasmexe
4348 AR=$ar
4349 ARFLAGS=$arflags
4350 AR_O=$ar_o
4351 RANLIB=$ranlib
4352 STRIP=$strip
4353 LN_S=$ln_s
4354 CPPFLAGS=$CPPFLAGS
4355 CFLAGS=$CFLAGS
4356 ASFLAGS=$ASFLAGS
4357 AS_C=$AS_C
4358 AS_O=$AS_O
4359 CC_C=$CC_C
4360 CC_E=$CC_E
4361 CC_O=$CC_O
4362 LD_O=$LD_O
4363 LD_LIB=$LD_LIB
4364 LD_PATH=$LD_PATH
4365 DLLTOOL=$dlltool
4366 LDFLAGS=$LDFLAGS
4367 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4368 STRIPFLAGS=$STRIPFLAGS
4369 YASMFLAGS=$YASMFLAGS
4370 BUILDSUF=$build_suffix
4371 FULLNAME=$FULLNAME
4372 LIBPREF=$LIBPREF
4373 LIBSUF=$LIBSUF
4374 LIBNAME=$LIBNAME
4375 SLIBPREF=$SLIBPREF
4376 SLIBSUF=$SLIBSUF
4377 EXESUF=$EXESUF
4378 EXTRA_VERSION=$extra_version
4379 CCDEP=$CCDEP
4380 CCDEP_FLAGS=$CCDEP_FLAGS
4381 ASDEP=$ASDEP
4382 ASDEP_FLAGS=$ASDEP_FLAGS
4383 CC_DEPFLAGS=$CC_DEPFLAGS
4384 AS_DEPFLAGS=$AS_DEPFLAGS
4385 HOSTCC=$host_cc
4386 HOSTLD=$host_ld
4387 HOSTCFLAGS=$host_cflags
4388 HOSTCPPFLAGS=$host_cppflags
4389 HOSTEXESUF=$HOSTEXESUF
4390 HOSTLDFLAGS=$host_ldflags
4391 HOSTLIBS=$host_libs
4392 DEPHOSTCC=$host_cc
4393 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4394 HOSTCCDEP=$HOSTCCDEP
4395 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4396 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4397 HOSTCC_C=$HOSTCC_C
4398 HOSTCC_O=$HOSTCC_O
4399 HOSTLD_O=$HOSTLD_O
4400 TARGET_EXEC=$target_exec $target_exec_args
4401 TARGET_PATH=$target_path
4402 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4403 LIBS-avplay=$sdl_libs
4404 CFLAGS-avplay=$sdl_cflags
4405 ZLIB=$($ldflags_filter -lz)
4406 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4407 EXTRALIBS=$extralibs
4408 COMPAT_OBJS=$compat_objs
4409 EXEOBJS=$exeobjs
4410 INSTALL=install
4411 LIBTARGET=${LIBTARGET}
4412 SLIBNAME=${SLIBNAME}
4413 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4414 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4415 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4416 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4417 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4418 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4419 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4420 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4421 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4422 EOF
4423
4424 get_version(){
4425     lcname=lib${1}
4426     name=$(toupper $lcname)
4427     file=$source_path/$lcname/version.h
4428     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4429     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4430     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4431     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4432     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4433 }
4434
4435 map 'get_version $v' $LIBRARY_LIST
4436
4437 cat > $TMPH <<EOF
4438 /* Automatically generated by configure - do not modify! */
4439 #ifndef LIBAV_CONFIG_H
4440 #define LIBAV_CONFIG_H
4441 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4442 #define LIBAV_LICENSE "$(c_escape $license)"
4443 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4444 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4445 #define restrict $_restrict
4446 #define EXTERN_PREFIX "${extern_prefix}"
4447 #define EXTERN_ASM ${extern_prefix}
4448 #define SLIBSUF "$SLIBSUF"
4449 EOF
4450
4451 test -n "$malloc_prefix" &&
4452     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4453
4454 if enabled yasm; then
4455     append config_files $TMPASM
4456     printf '' >$TMPASM
4457 fi
4458
4459 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4460
4461 print_config ARCH_   "$config_files" $ARCH_LIST
4462 print_config HAVE_   "$config_files" $HAVE_LIST
4463 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4464                                      $CONFIG_EXTRA      \
4465                                      $ALL_COMPONENTS    \
4466
4467 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4468
4469 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4470 cp_if_changed $TMPH config.h
4471 touch .config
4472
4473 enabled yasm && cp_if_changed $TMPASM config.asm
4474
4475 cat > $TMPH <<EOF
4476 /* Generated by ffconf */
4477 #ifndef AVUTIL_AVCONFIG_H
4478 #define AVUTIL_AVCONFIG_H
4479 EOF
4480
4481 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4482
4483 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4484
4485 cp_if_changed $TMPH libavutil/avconfig.h
4486
4487 test -n "$WARNINGS" && printf "\n$WARNINGS"
4488
4489 # build pkg-config files
4490
4491 pkgconfig_generate(){
4492     name=$1
4493     shortname=${name#lib}${build_suffix}
4494     comment=$2
4495     version=$3
4496     libs=$4
4497     requires=$5
4498     enabled ${name#lib} || return 0
4499     mkdir -p $name
4500     cat <<EOF > $name/$name.pc
4501 prefix=$prefix
4502 exec_prefix=\${prefix}
4503 libdir=$libdir
4504 includedir=$incdir
4505
4506 Name: $name
4507 Description: $comment
4508 Version: $version
4509 Requires: $(enabled shared || echo $requires)
4510 Requires.private: $(enabled shared && echo $requires)
4511 Conflicts:
4512 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4513 Libs.private: $(enabled shared && echo $libs)
4514 Cflags: -I\${includedir}
4515 EOF
4516     cat <<EOF > $name/$name-uninstalled.pc
4517 prefix=
4518 exec_prefix=
4519 libdir=\${pcfiledir}
4520 includedir=${source_path}
4521
4522 Name: $name
4523 Description: $comment
4524 Version: $version
4525 Requires: $requires
4526 Conflicts:
4527 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4528 Cflags: -I\${includedir}
4529 EOF
4530 }
4531
4532 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4533 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4534 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4535 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4536
4537 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4538 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4539 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4540 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4541 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4542 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4543 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"