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-libx265         enable HEVC encoding via x265 [no]
 208   --enable-libxavs         enable AVS encoding via xavs [no]
 209   --enable-libxvid         enable Xvid encoding via xvidcore,
 210                            native MPEG-4/Xvid encoder exists [no]
 211   --enable-openssl         enable openssl [no]
 212   --enable-x11grab         enable X11 grabbing [no]
 213   --enable-zlib            enable zlib [autodetect]
 214
 215 Advanced options (experts only):
 216   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 217   --enable-cross-compile   assume a cross-compiler is used
 218   --sysroot=PATH           root of cross-build tree
 219   --sysinclude=PATH        location of cross-build system headers
 220   --target-os=OS           compiler targets OS [$target_os]
 221   --target-exec=CMD        command to run executables on target
 222   --target-path=DIR        path to view of build directory on target
 223   --target-samples=DIR     path to samples directory on target
 224   --toolchain=NAME         set tool defaults according to NAME
 225   --nm=NM                  use nm tool
 226   --ar=AR                  use archive tool AR [$ar_default]
 227   --as=AS                  use assembler AS [$as_default]
 228   --cc=CC                  use C compiler CC [$cc_default]
 229   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 230   --ld=LD                  use linker LD
 231   --host-cc=HOSTCC         use host C compiler HOSTCC
 232   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 233   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 234   --host-ld=HOSTLD         use host linker HOSTLD
 235   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 236   --host-libs=HLIBS        use libs HLIBS when linking for host
 237   --host-os=OS             compiler host OS [$target_os]
 238   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 239   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 240   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 241   --extra-version=STRING   version string suffix []
 242   --optflags=OPTFLAGS      override optimization-related compiler flags
 243   --build-suffix=SUFFIX    library name suffix []
 244   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 245   --arch=ARCH              select architecture [$arch]
 246   --cpu=CPU                select the minimum required CPU (affects
 247                            instruction selection, may crash on older CPUs)
 248   --enable-pic             build position-independent code
 249   --enable-sram            allow use of on-chip SRAM
 250   --enable-thumb           compile for Thumb instruction set
 251   --disable-symver         disable symbol versioning
 252   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 253   --disable-safe-bitstream-reader
 254                            disable buffer boundary checking in bitreaders
 255                            (faster, but may crash)
 256   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 257   --enable-lto             use link-time optimization
 258
 259 Optimization options (experts only):
 260   --disable-asm            disable all assembler optimizations
 261   --disable-altivec        disable AltiVec optimizations
 262   --disable-amd3dnow       disable 3DNow! optimizations
 263   --disable-amd3dnowext    disable 3DNow! extended optimizations
 264   --disable-mmx            disable MMX optimizations
 265   --disable-mmxext         disable MMXEXT optimizations
 266   --disable-sse            disable SSE optimizations
 267   --disable-sse2           disable SSE2 optimizations
 268   --disable-sse3           disable SSE3 optimizations
 269   --disable-ssse3          disable SSSE3 optimizations
 270   --disable-sse4           disable SSE4 optimizations
 271   --disable-sse42          disable SSE4.2 optimizations
 272   --disable-avx            disable AVX optimizations
 273   --disable-xop            disable XOP optimizations
 274   --disable-fma3           disable FMA3 optimizations
 275   --disable-fma4           disable FMA4 optimizations
 276   --disable-avx2           disable AVX2 optimizations
 277   --disable-armv5te        disable armv5te optimizations
 278   --disable-armv6          disable armv6 optimizations
 279   --disable-armv6t2        disable armv6t2 optimizations
 280   --disable-vfp            disable VFP optimizations
 281   --disable-neon           disable NEON optimizations
 282   --disable-vis            disable VIS optimizations
 283   --disable-inline-asm     disable use of inline assembler
 284   --disable-yasm           disable use of yasm assembler
 285
 286 Developer options (useful when working on Libav itself):
 287   --disable-debug          disable debugging symbols
 288   --enable-debug=LEVEL     set the debug level [$debuglevel]
 289   --disable-optimizations  disable compiler optimizations
 290   --enable-extra-warnings  enable more compiler warnings
 291   --samples=PATH           location of test samples for FATE, if not set use
 292                            \$LIBAV_SAMPLES at make invocation time.
 293   --enable-neon-clobber-test check NEON registers for clobbering (should be
 294                            used only for debugging purposes)
 295   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 296                            should be used only for debugging purposes)
 297   --enable-random          randomly enable/disable components
 298   --disable-random
 299   --enable-random=LIST     randomly enable/disable specific components or
 300   --disable-random=LIST    component groups. LIST is a comma-separated list
 301                            of NAME[:PROB] entries where NAME is a component
 302                            (group) and PROB the probability associated with
 303                            NAME (default 0.5).
 304   --random-seed=VALUE      seed value for --enable/disable-random
 305
 306 NOTE: Object files are built at the place where configure is launched.
 307 EOF
 308   exit 0
 309 }
 310
 311 quotes='""'
 312
 313 log(){
 314     echo "$@" >> $logfile
 315 }
 316
 317 log_file(){
 318     log BEGIN $1
 319     pr -n -t $1 >> $logfile
 320     log END $1
 321 }
 322
 323 echolog(){
 324     log "$@"
 325     echo "$@"
 326 }
 327
 328 warn(){
 329     log "WARNING: $*"
 330     WARNINGS="${WARNINGS}WARNING: $*\n"
 331 }
 332
 333 die(){
 334     echolog "$@"
 335     cat <<EOF
 336
 337 If you think configure made a mistake, make sure you are using the latest
 338 version from Git.  If the latest version fails, report the problem to the
 339 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 340 EOF
 341     if disabled logging; then
 342         cat <<EOF
 343 Rerun configure with logging enabled (do not use --disable-logging), and
 344 include the log this produces with your report.
 345 EOF
 346     else
 347         cat <<EOF
 348 Include the log file "$logfile" produced by configure as this will help
 349 solving the problem.
 350 EOF
 351     fi
 352     exit 1
 353 }
 354
 355 # Avoid locale weirdness, besides we really just want to translate ASCII.
 356 toupper(){
 357     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 358 }
 359
 360 tolower(){
 361     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 362 }
 363
 364 c_escape(){
 365     echo "$*" | sed 's/["\\]/\\\0/g'
 366 }
 367
 368 sh_quote(){
 369     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 370     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 371     echo "$v"
 372 }
 373
 374 cleanws(){
 375     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 376 }
 377
 378 filter(){
 379     pat=$1
 380     shift
 381     for v; do
 382         eval "case $v in $pat) echo $v ;; esac"
 383     done
 384 }
 385
 386 filter_out(){
 387     pat=$1
 388     shift
 389     for v; do
 390         eval "case $v in $pat) ;; *) echo $v ;; esac"
 391     done
 392 }
 393
 394 map(){
 395     m=$1
 396     shift
 397     for v; do eval $m; done
 398 }
 399
 400 add_suffix(){
 401     suffix=$1
 402     shift
 403     for v; do echo ${v}${suffix}; done
 404 }
 405
 406 set_all(){
 407     value=$1
 408     shift
 409     for var in $*; do
 410         eval $var=$value
 411     done
 412 }
 413
 414 set_weak(){
 415     value=$1
 416     shift
 417     for var; do
 418         eval : \${$var:=$value}
 419     done
 420 }
 421
 422 sanitize_var_name(){
 423     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 424 }
 425
 426 set_safe(){
 427     var=$1
 428     shift
 429     eval $(sanitize_var_name "$var")='$*'
 430 }
 431
 432 get_safe(){
 433     eval echo \$$(sanitize_var_name "$1")
 434 }
 435
 436 pushvar(){
 437     for pvar in $*; do
 438         eval level=\${${pvar}_level:=0}
 439         eval ${pvar}_${level}="\$$pvar"
 440         eval ${pvar}_level=$(($level+1))
 441     done
 442 }
 443
 444 popvar(){
 445     for pvar in $*; do
 446         eval level=\${${pvar}_level:-0}
 447         test $level = 0 && continue
 448         eval level=$(($level-1))
 449         eval $pvar="\${${pvar}_${level}}"
 450         eval ${pvar}_level=$level
 451         eval unset ${pvar}_${level}
 452     done
 453 }
 454
 455 enable(){
 456     set_all yes $*
 457 }
 458
 459 disable(){
 460     set_all no $*
 461 }
 462
 463 enable_weak(){
 464     set_weak yes $*
 465 }
 466
 467 disable_weak(){
 468     set_weak no $*
 469 }
 470
 471 enable_safe(){
 472     for var; do
 473         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 474     done
 475 }
 476
 477 disable_safe(){
 478     for var; do
 479         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 480     done
 481 }
 482
 483 do_enable_deep(){
 484     for var; do
 485         enabled $var && continue
 486         eval sel="\$${var}_select"
 487         eval sgs="\$${var}_suggest"
 488         pushvar var sgs
 489         enable_deep $sel
 490         popvar sgs
 491         enable_deep_weak $sgs
 492         popvar var
 493     done
 494 }
 495
 496 enable_deep(){
 497     do_enable_deep $*
 498     enable $*
 499 }
 500
 501 enable_deep_weak(){
 502     for var; do
 503         disabled $var && continue
 504         pushvar var
 505         do_enable_deep $var
 506         popvar var
 507         enable_weak $var
 508     done
 509 }
 510
 511 enabled(){
 512     test "${1#!}" = "$1" && op== || op=!=
 513     eval test "x\$${1#!}" $op "xyes"
 514 }
 515
 516 disabled(){
 517     test "${1#!}" = "$1" && op== || op=!=
 518     eval test "x\$${1#!}" $op "xno"
 519 }
 520
 521 enabled_all(){
 522     for opt; do
 523         enabled $opt || return 1
 524     done
 525 }
 526
 527 disabled_all(){
 528     for opt; do
 529         disabled $opt || return 1
 530     done
 531 }
 532
 533 enabled_any(){
 534     for opt; do
 535         enabled $opt && return 0
 536     done
 537 }
 538
 539 disabled_any(){
 540     for opt; do
 541         disabled $opt && return 0
 542     done
 543     return 1
 544 }
 545
 546 set_default(){
 547     for opt; do
 548         eval : \${$opt:=\$${opt}_default}
 549     done
 550 }
 551
 552 is_in(){
 553     value=$1
 554     shift
 555     for var in $*; do
 556         [ $var = $value ] && return 0
 557     done
 558     return 1
 559 }
 560
 561 do_check_deps(){
 562     for cfg; do
 563         cfg="${cfg#!}"
 564         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 565         disabled ${cfg}_checking && continue
 566         enable ${cfg}_checking
 567         append allopts $cfg
 568
 569         eval dep_all="\$${cfg}_deps"
 570         eval dep_any="\$${cfg}_deps_any"
 571         eval dep_sel="\$${cfg}_select"
 572         eval dep_sgs="\$${cfg}_suggest"
 573         eval dep_ifa="\$${cfg}_if"
 574         eval dep_ifn="\$${cfg}_if_any"
 575
 576         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 577         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 578         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 579
 580         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 581         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 582         enabled_all  $dep_all || disable $cfg
 583         enabled_any  $dep_any || disable $cfg
 584         disabled_any $dep_sel && disable $cfg
 585
 586         if enabled $cfg; then
 587             enable_deep $dep_sel
 588             enable_deep_weak $dep_sgs
 589         fi
 590
 591         disable ${cfg}_checking
 592     done
 593 }
 594
 595 check_deps(){
 596     unset allopts
 597
 598     do_check_deps "$@"
 599
 600     for cfg in $allopts; do
 601         enabled $cfg || continue
 602         eval dep_extralibs="\$${cfg}_extralibs"
 603         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 604     done
 605 }
 606
 607 print_config(){
 608     pfx=$1
 609     files=$2
 610     shift 2
 611     map 'eval echo "$v \${$v:-no}"' "$@" |
 612     awk "BEGIN { split(\"$files\", files) }
 613         {
 614             c = \"$pfx\" toupper(\$1);
 615             v = \$2;
 616             sub(/yes/, 1, v);
 617             sub(/no/,  0, v);
 618             for (f in files) {
 619                 file = files[f];
 620                 if (file ~ /\\.h\$/) {
 621                     printf(\"#define %s %d\\n\", c, v) >>file;
 622                 } else if (file ~ /\\.asm\$/) {
 623                     printf(\"%%define %s %d\\n\", c, v) >>file;
 624                 } else if (file ~ /\\.mak\$/) {
 625                     n = -v ? \"\" : \"!\";
 626                     printf(\"%s%s=yes\\n\", n, c) >>file;
 627                 }
 628             }
 629         }"
 630 }
 631
 632 print_enabled(){
 633     suf=$1
 634     shift
 635     for v; do
 636         enabled $v && printf "%s\n" ${v%$suf};
 637     done
 638 }
 639
 640 append(){
 641     var=$1
 642     shift
 643     eval "$var=\"\$$var $*\""
 644 }
 645
 646 prepend(){
 647     var=$1
 648     shift
 649     eval "$var=\"$* \$$var\""
 650 }
 651
 652 add_cppflags(){
 653     append CPPFLAGS "$@"
 654 }
 655
 656 add_cflags(){
 657     append CFLAGS $($cflags_filter "$@")
 658 }
 659
 660 add_asflags(){
 661     append ASFLAGS $($asflags_filter "$@")
 662 }
 663
 664 add_ldflags(){
 665     append LDFLAGS $($ldflags_filter "$@")
 666 }
 667
 668 add_stripflags(){
 669     append STRIPFLAGS "$@"
 670 }
 671
 672 add_extralibs(){
 673     prepend extralibs $($ldflags_filter "$@")
 674 }
 675
 676 add_host_cppflags(){
 677     append host_cppflags "$@"
 678 }
 679
 680 add_host_cflags(){
 681     append host_cflags $($host_cflags_filter "$@")
 682 }
 683
 684 add_host_ldflags(){
 685     append host_ldflags $($host_ldflags_filter "$@")
 686 }
 687
 688 add_compat(){
 689     append compat_objs $1
 690     shift
 691     map 'add_cppflags -D$v' "$@"
 692 }
 693
 694 check_cmd(){
 695     log "$@"
 696     "$@" >> $logfile 2>&1
 697 }
 698
 699 cc_o(){
 700     eval printf '%s\\n' $CC_O
 701 }
 702
 703 cc_e(){
 704     eval printf '%s\\n' $CC_E
 705 }
 706
 707 check_cc(){
 708     log check_cc "$@"
 709     cat > $TMPC
 710     log_file $TMPC
 711     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 712 }
 713
 714 check_cpp(){
 715     log check_cpp "$@"
 716     cat > $TMPC
 717     log_file $TMPC
 718     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 719 }
 720
 721 as_o(){
 722     eval printf '%s\\n' $AS_O
 723 }
 724
 725 check_as(){
 726     log check_as "$@"
 727     cat > $TMPS
 728     log_file $TMPS
 729     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 730 }
 731
 732 check_inline_asm(){
 733     log check_inline_asm "$@"
 734     name="$1"
 735     code="$2"
 736     shift 2
 737     disable $name
 738     check_cc "$@" <<EOF && enable $name
 739 void foo(void){ __asm__ volatile($code); }
 740 EOF
 741 }
 742
 743 check_insn(){
 744     log check_insn "$@"
 745     check_inline_asm ${1}_inline "\"$2\""
 746     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 747 }
 748
 749 check_yasm(){
 750     log check_yasm "$@"
 751     echo "$1" > $TMPS
 752     log_file $TMPS
 753     shift 1
 754     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 755 }
 756
 757 ld_o(){
 758     eval printf '%s\\n' $LD_O
 759 }
 760
 761 check_ld(){
 762     log check_ld "$@"
 763     flags=$(filter_out '-l*' "$@")
 764     libs=$(filter '-l*' "$@")
 765     check_cc $($cflags_filter $flags) || return
 766     flags=$($ldflags_filter $flags)
 767     libs=$($ldflags_filter $libs)
 768     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 769 }
 770
 771 print_include(){
 772     hdr=$1
 773     test "${hdr%.h}" = "${hdr}" &&
 774         echo "#include $hdr"    ||
 775         echo "#include <$hdr>"
 776 }
 777
 778 check_code(){
 779     log check_code "$@"
 780     check=$1
 781     headers=$2
 782     code=$3
 783     shift 3
 784     {
 785         for hdr in $headers; do
 786             print_include $hdr
 787         done
 788         echo "int main(void) { $code; return 0; }"
 789     } | check_$check "$@"
 790 }
 791
 792 check_cppflags(){
 793     log check_cppflags "$@"
 794     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 795 int x;
 796 EOF
 797 }
 798
 799 test_cflags(){
 800     log test_cflags "$@"
 801     set -- $($cflags_filter "$@")
 802     check_cc "$@" <<EOF
 803 int x;
 804 EOF
 805 }
 806
 807 check_cflags(){
 808     log check_cflags "$@"
 809     test_cflags "$@" && add_cflags "$@"
 810 }
 811
 812 test_ldflags(){
 813     log test_ldflags "$@"
 814     check_ld "$@" <<EOF
 815 int main(void){ return 0; }
 816 EOF
 817 }
 818
 819 check_ldflags(){
 820     log check_ldflags "$@"
 821     test_ldflags "$@" && add_ldflags "$@"
 822 }
 823
 824 test_stripflags(){
 825     log test_stripflags "$@"
 826     # call check_cc to get a fresh TMPO
 827     check_cc <<EOF
 828 int main(void) { return 0; }
 829 EOF
 830     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 831 }
 832
 833 check_stripflags(){
 834     log check_stripflags "$@"
 835     test_stripflags "$@" && add_stripflags "$@"
 836 }
 837
 838 check_header(){
 839     log check_header "$@"
 840     header=$1
 841     shift
 842     disable_safe $header
 843     check_cpp "$@" <<EOF && enable_safe $header
 844 #include <$header>
 845 int x;
 846 EOF
 847 }
 848
 849 check_func(){
 850     log check_func "$@"
 851     func=$1
 852     shift
 853     disable $func
 854     check_ld "$@" <<EOF && enable $func
 855 extern int $func();
 856 int main(void){ $func(); }
 857 EOF
 858 }
 859
 860 check_mathfunc(){
 861     log check_mathfunc "$@"
 862     func=$1
 863     narg=$2
 864     shift 2
 865     test $narg = 2 && args="f, g" || args="f"
 866     disable $func
 867     check_ld "$@" <<EOF && enable $func
 868 #include <math.h>
 869 float foo(float f, float g) { return $func($args); }
 870 int main(void){ return 0; }
 871 EOF
 872 }
 873
 874 check_func_headers(){
 875     log check_func_headers "$@"
 876     headers=$1
 877     funcs=$2
 878     shift 2
 879     {
 880         for hdr in $headers; do
 881             print_include $hdr
 882         done
 883         for func in $funcs; do
 884             echo "long check_$func(void) { return (long) $func; }"
 885         done
 886         echo "int main(void) { return 0; }"
 887     } | check_ld "$@" && enable $funcs && enable_safe $headers
 888 }
 889
 890 check_cpp_condition(){
 891     log check_cpp_condition "$@"
 892     header=$1
 893     condition=$2
 894     shift 2
 895     check_cpp "$@" <<EOF
 896 #include <$header>
 897 #if !($condition)
 898 #error "unsatisfied condition: $condition"
 899 #endif
 900 EOF
 901 }
 902
 903 check_lib(){
 904     log check_lib "$@"
 905     header="$1"
 906     func="$2"
 907     shift 2
 908     check_header $header && check_func $func "$@" && add_extralibs "$@"
 909 }
 910
 911 check_lib2(){
 912     log check_lib2 "$@"
 913     headers="$1"
 914     funcs="$2"
 915     shift 2
 916     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 917 }
 918
 919 check_pkg_config(){
 920     log check_pkg_config "$@"
 921     pkg="$1"
 922     headers="$2"
 923     funcs="$3"
 924     shift 3
 925     check_cmd $pkg_config --exists --print-errors $pkg || return
 926     pkg_cflags=$($pkg_config --cflags $pkg)
 927     pkg_libs=$($pkg_config --libs $pkg)
 928     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 929         set_safe ${pkg}_cflags $pkg_cflags   &&
 930         set_safe ${pkg}_libs   $pkg_libs
 931 }
 932
 933 check_exec(){
 934     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 935 }
 936
 937 check_exec_crash(){
 938     code=$(cat)
 939
 940     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 941     # are safe but may not be available everywhere.  Thus we use
 942     # raise(SIGTERM) instead.  The check is run in a subshell so we
 943     # can redirect the "Terminated" message from the shell.  SIGBUS
 944     # is not defined by standard C so it is used conditionally.
 945
 946     (check_exec "$@") >> $logfile 2>&1 <<EOF
 947 #include <signal.h>
 948 static void sighandler(int sig){
 949     raise(SIGTERM);
 950 }
 951 int foo(void){
 952     $code
 953 }
 954 int (*func_ptr)(void) = foo;
 955 int main(void){
 956     signal(SIGILL, sighandler);
 957     signal(SIGFPE, sighandler);
 958     signal(SIGSEGV, sighandler);
 959 #ifdef SIGBUS
 960     signal(SIGBUS, sighandler);
 961 #endif
 962     return func_ptr();
 963 }
 964 EOF
 965 }
 966
 967 check_type(){
 968     log check_type "$@"
 969     headers=$1
 970     type=$2
 971     shift 2
 972     disable_safe "$type"
 973     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 974 }
 975
 976 check_struct(){
 977     log check_struct "$@"
 978     headers=$1
 979     struct=$2
 980     member=$3
 981     shift 3
 982     disable_safe "${struct}_${member}"
 983     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 984         enable_safe "${struct}_${member}"
 985 }
 986
 987 check_builtin(){
 988     log check_builtin "$@"
 989     name=$1
 990     headers=$2
 991     builtin=$3
 992     shift 3
 993     disable "$name"
 994     check_code ld "$headers" "$builtin" "$@" && enable "$name"
 995 }
 996
 997 require(){
 998     name="$1"
 999     header="$2"
1000     func="$3"
1001     shift 3
1002     check_lib $header $func "$@" || die "ERROR: $name not found"
1003 }
1004
1005 require2(){
1006     name="$1"
1007     headers="$2"
1008     func="$3"
1009     shift 3
1010     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1011 }
1012
1013 require_pkg_config(){
1014     pkg="$1"
1015     check_pkg_config "$@" || die "ERROR: $pkg not found"
1016     add_cflags    $(get_safe ${pkg}_cflags)
1017     add_extralibs $(get_safe ${pkg}_libs)
1018 }
1019
1020 hostcc_e(){
1021     eval printf '%s\\n' $HOSTCC_E
1022 }
1023
1024 hostcc_o(){
1025     eval printf '%s\\n' $HOSTCC_O
1026 }
1027
1028 check_host_cc(){
1029     log check_host_cc "$@"
1030     cat > $TMPC
1031     log_file $TMPC
1032     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1033 }
1034
1035 check_host_cpp(){
1036     log check_host_cpp "$@"
1037     cat > $TMPC
1038     log_file $TMPC
1039     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1040 }
1041
1042 check_host_cppflags(){
1043     log check_host_cppflags "$@"
1044     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1045 int x;
1046 EOF
1047 }
1048
1049 check_host_cflags(){
1050     log check_host_cflags "$@"
1051     set -- $($host_cflags_filter "$@")
1052     check_host_cc "$@" <<EOF && append host_cflags "$@"
1053 int x;
1054 EOF
1055 }
1056
1057 check_host_cpp_condition(){
1058     log check_host_cpp_condition "$@"
1059     header=$1
1060     condition=$2
1061     shift 2
1062     check_host_cpp "$@" <<EOF
1063 #include <$header>
1064 #if !($condition)
1065 #error "unsatisfied condition: $condition"
1066 #endif
1067 EOF
1068 }
1069
1070 apply(){
1071     file=$1
1072     shift
1073     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1074 }
1075
1076 cp_if_changed(){
1077     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1078     mkdir -p "$(dirname $2)"
1079     $cp_f "$1" "$2"
1080 }
1081
1082 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1083 # system-dependent things.
1084
1085 COMPONENT_LIST="
1086     bsfs
1087     decoders
1088     demuxers
1089     encoders
1090     filters
1091     hwaccels
1092     indevs
1093     muxers
1094     outdevs
1095     parsers
1096     protocols
1097 "
1098
1099 EXAMPLE_LIST="
1100     avcodec_example
1101     filter_audio_example
1102     metadata_example
1103     output_example
1104     transcode_aac_example
1105 "
1106
1107 EXTERNAL_LIBRARY_LIST="
1108     avisynth
1109     bzlib
1110     frei0r
1111     gnutls
1112     libcdio
1113     libdc1394
1114     libfaac
1115     libfdk_aac
1116     libfreetype
1117     libgsm
1118     libilbc
1119     libmp3lame
1120     libopencore_amrnb
1121     libopencore_amrwb
1122     libopencv
1123     libopenjpeg
1124     libopus
1125     libpulse
1126     librtmp
1127     libschroedinger
1128     libspeex
1129     libtheora
1130     libvo_aacenc
1131     libvo_amrwbenc
1132     libvorbis
1133     libvpx
1134     libwavpack
1135     libwebp
1136     libx264
1137     libx265
1138     libxavs
1139     libxvid
1140     openssl
1141     x11grab
1142     zlib
1143 "
1144
1145 HWACCEL_LIST="
1146     dxva2
1147     vaapi
1148     vda
1149     vdpau
1150 "
1151 LIBRARY_LIST="
1152     avcodec
1153     avdevice
1154     avfilter
1155     avformat
1156     avresample
1157     avutil
1158     swscale
1159 "
1160
1161 PROGRAM_LIST="
1162     avconv
1163     avplay
1164     avprobe
1165     avserver
1166 "
1167
1168 CONFIG_LIST="
1169     $COMPONENT_LIST
1170     $EXAMPLE_LIST
1171     $EXTERNAL_LIBRARY_LIST
1172     $HWACCEL_LIST
1173     $LIBRARY_LIST
1174     $PROGRAM_LIST
1175     dct
1176     doc
1177     error_resilience
1178     fft
1179     gpl
1180     gray
1181     hardcoded_tables
1182     lsp
1183     lzo
1184     mdct
1185     memalign_hack
1186     neon_clobber_test
1187     network
1188     nonfree
1189     pod2man
1190     pic
1191     rdft
1192     runtime_cpudetect
1193     safe_bitstream_reader
1194     shared
1195     small
1196     sram
1197     static
1198     swscale_alpha
1199     texi2html
1200     thumb
1201     version3
1202     xmm_clobber_test
1203 "
1204
1205 THREADS_LIST='
1206     pthreads
1207     w32threads
1208 '
1209
1210 ATOMICS_LIST='
1211     atomics_gcc
1212     atomics_suncc
1213     atomics_win32
1214 '
1215
1216 ARCH_LIST='
1217     aarch64
1218     alpha
1219     arm
1220     avr32
1221     avr32_ap
1222     avr32_uc
1223     bfin
1224     ia64
1225     m68k
1226     mips
1227     mips64
1228     parisc
1229     ppc
1230     ppc64
1231     s390
1232     sh4
1233     sparc
1234     sparc64
1235     tilegx
1236     tilepro
1237     tomi
1238     x86
1239     x86_32
1240     x86_64
1241 '
1242
1243 ARCH_EXT_LIST_ARM='
1244     armv5te
1245     armv6
1246     armv6t2
1247     neon
1248     vfp
1249     vfpv3
1250 '
1251
1252 ARCH_EXT_LIST_X86='
1253     amd3dnow
1254     amd3dnowext
1255     avx
1256     avx2
1257     cpunop
1258     xop
1259     fma3
1260     fma4
1261     i686
1262     mmx
1263     mmxext
1264     sse
1265     sse2
1266     sse3
1267     sse4
1268     sse42
1269     ssse3
1270 '
1271
1272 ARCH_EXT_LIST="
1273     $ARCH_EXT_LIST_ARM
1274     $ARCH_EXT_LIST_X86
1275     altivec
1276     ppc4xx
1277     vis
1278 "
1279
1280 HAVE_LIST_CMDLINE='
1281     inline_asm
1282     symver
1283     yasm
1284 '
1285
1286 HAVE_LIST_PUB='
1287     bigendian
1288     fast_unaligned
1289 '
1290
1291 MATH_FUNCS="
1292     atanf
1293     atan2f
1294     cbrtf
1295     cosf
1296     exp2
1297     exp2f
1298     expf
1299     isinf
1300     isnan
1301     ldexpf
1302     llrint
1303     llrintf
1304     log2
1305     log2f
1306     log10f
1307     lrint
1308     lrintf
1309     powf
1310     rint
1311     round
1312     roundf
1313     sinf
1314     trunc
1315     truncf
1316 "
1317
1318 HAVE_LIST="
1319     $ARCH_EXT_LIST
1320     $(add_suffix _external $ARCH_EXT_LIST)
1321     $(add_suffix _inline   $ARCH_EXT_LIST)
1322     $HAVE_LIST_CMDLINE
1323     $HAVE_LIST_PUB
1324     $THREADS_LIST
1325     $ATOMICS_LIST
1326     $MATH_FUNCS
1327     aligned_malloc
1328     aligned_stack
1329     alsa_asoundlib_h
1330     altivec_h
1331     arpa_inet_h
1332     asm_mod_q
1333     atomic_cas_ptr
1334     atomics_native
1335     attribute_may_alias
1336     attribute_packed
1337     cdio_paranoia_h
1338     cdio_paranoia_paranoia_h
1339     closesocket
1340     CommandLineToArgvW
1341     CryptGenRandom
1342     dcbzl
1343     dev_bktr_ioctl_bt848_h
1344     dev_bktr_ioctl_meteor_h
1345     dev_ic_bt8xx_h
1346     dev_video_bktr_ioctl_bt848_h
1347     dev_video_meteor_ioctl_meteor_h
1348     direct_h
1349     dlfcn_h
1350     dlopen
1351     dos_paths
1352     dxva_h
1353     ebp_available
1354     ebx_available
1355     fast_64bit
1356     fast_clz
1357     fast_cmov
1358     fcntl
1359     fork
1360     getaddrinfo
1361     gethrtime
1362     getopt
1363     GetProcessAffinityMask
1364     GetProcessMemoryInfo
1365     GetProcessTimes
1366     GetSystemTimeAsFileTime
1367     getrusage
1368     getservbyport
1369     gettimeofday
1370     gnu_as
1371     gsm_h
1372     ibm_asm
1373     inet_aton
1374     io_h
1375     inline_asm_labels
1376     isatty
1377     jack_port_get_latency_range
1378     ldbrx
1379     libc_msvcrt
1380     libdc1394_1
1381     libdc1394_2
1382     local_aligned_16
1383     local_aligned_8
1384     localtime_r
1385     loongson
1386     machine_ioctl_bt848_h
1387     machine_ioctl_meteor_h
1388     machine_rw_barrier
1389     malloc_h
1390     MapViewOfFile
1391     memalign
1392     MemoryBarrier
1393     mkstemp
1394     mm_empty
1395     mmap
1396     mprotect
1397     nanosleep
1398     poll_h
1399     posix_memalign
1400     pragma_deprecated
1401     rdtsc
1402     sched_getaffinity
1403     sdl
1404     SetConsoleTextAttribute
1405     setmode
1406     setrlimit
1407     Sleep
1408     sndio_h
1409     socklen_t
1410     soundcard_h
1411     strerror_r
1412     strptime
1413     strtok_r
1414     struct_addrinfo
1415     struct_group_source_req
1416     struct_ip_mreq_source
1417     struct_ipv6_mreq
1418     struct_pollfd
1419     struct_rusage_ru_maxrss
1420     struct_sockaddr_in6
1421     struct_sockaddr_sa_len
1422     struct_sockaddr_storage
1423     struct_v4l2_frmivalenum_discrete
1424     symver_asm_label
1425     symver_gnu_asm
1426     sync_val_compare_and_swap
1427     sysconf
1428     sysctl
1429     sys_mman_h
1430     sys_param_h
1431     sys_resource_h
1432     sys_select_h
1433     sys_soundcard_h
1434     sys_time_h
1435     sys_un_h
1436     sys_videoio_h
1437     threads
1438     unistd_h
1439     usleep
1440     vdpau_x11
1441     vfp_args
1442     VirtualAlloc
1443     windows_h
1444     winsock2_h
1445     xform_asm
1446     xlib
1447     xmm_clobbers
1448 "
1449
1450 # options emitted with CONFIG_ prefix but not available on the command line
1451 CONFIG_EXTRA="
1452     aandcttables
1453     ac3dsp
1454     audio_frame_queue
1455     dsputil
1456     gcrypt
1457     golomb
1458     gplv3
1459     h263dsp
1460     h264chroma
1461     h264dsp
1462     h264pred
1463     h264qpel
1464     hpeldsp
1465     huffman
1466     intrax8
1467     lgplv3
1468     lpc
1469     mpegaudio
1470     mpegaudiodsp
1471     mpegvideo
1472     mpegvideoenc
1473     nettle
1474     rangecoder
1475     riffdec
1476     riffenc
1477     rtpdec
1478     rtpenc_chain
1479     sinewin
1480     videodsp
1481     vp3dsp
1482 "
1483
1484 CMDLINE_SELECT="
1485     $ARCH_EXT_LIST
1486     $CONFIG_LIST
1487     $HAVE_LIST_CMDLINE
1488     $THREADS_LIST
1489     asm
1490     cross_compile
1491     debug
1492     extra_warnings
1493     logging
1494     lto
1495     optimizations
1496 "
1497
1498 PATHS_LIST='
1499     bindir
1500     datadir
1501     docdir
1502     incdir
1503     libdir
1504     mandir
1505     prefix
1506     shlibdir
1507 '
1508
1509 CMDLINE_SET="
1510     $PATHS_LIST
1511     ar
1512     arch
1513     as
1514     build_suffix
1515     cc
1516     cpu
1517     cross_prefix
1518     dep_cc
1519     extra_version
1520     host_cc
1521     host_cflags
1522     host_ld
1523     host_ldflags
1524     host_libs
1525     host_os
1526     ld
1527     logfile
1528     malloc_prefix
1529     nm
1530     optflags
1531     pkg_config
1532     random_seed
1533     samples
1534     sysinclude
1535     sysroot
1536     target_exec
1537     target_os
1538     target_path
1539     target_samples
1540     toolchain
1541 "
1542
1543 CMDLINE_APPEND="
1544     extra_cflags
1545     host_cppflags
1546 "
1547
1548 # code dependency declarations
1549
1550 # architecture extensions
1551
1552 armv5te_deps="arm"
1553 armv6_deps="arm"
1554 armv6t2_deps="arm"
1555 neon_deps_any="aarch64 arm"
1556 vfp_deps_any="aarch64 arm"
1557 vfpv3_deps="vfp"
1558
1559 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1560
1561 altivec_deps="ppc"
1562 ppc4xx_deps="ppc"
1563
1564 vis_deps="sparc"
1565
1566 cpunop_deps="i686"
1567 x86_64_select="i686"
1568 x86_64_suggest="fast_cmov"
1569
1570 amd3dnow_deps="mmx"
1571 amd3dnowext_deps="amd3dnow"
1572 i686_deps="x86"
1573 mmx_deps="x86"
1574 mmxext_deps="mmx"
1575 sse_deps="mmxext"
1576 sse2_deps="sse"
1577 sse3_deps="sse2"
1578 ssse3_deps="sse3"
1579 sse4_deps="ssse3"
1580 sse42_deps="sse4"
1581 avx_deps="sse42"
1582 xop_deps="avx"
1583 fma3_deps="avx"
1584 fma4_deps="avx"
1585 avx2_deps="avx"
1586
1587 mmx_external_deps="yasm"
1588 mmx_inline_deps="inline_asm"
1589 mmx_suggest="mmx_external mmx_inline"
1590
1591 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1592     eval dep=\$${ext}_deps
1593     eval ${ext}_external_deps='"${dep}_external"'
1594     eval ${ext}_inline_deps='"${dep}_inline"'
1595     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1596 done
1597
1598 aligned_stack_if_any="aarch64 ppc x86"
1599 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1600 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1601 fast_unaligned_if_any="aarch64 ppc x86"
1602
1603 need_memalign="altivec neon sse"
1604
1605 # system capabilities
1606 log2_deps="!libc_msvcrt"
1607
1608 symver_if_any="symver_asm_label symver_gnu_asm"
1609
1610 # threading support
1611 atomics_gcc_if="sync_val_compare_and_swap"
1612 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1613 atomics_win32_if="MemoryBarrier"
1614 atomics_native_if_any="$ATOMICS_LIST"
1615 w32threads_deps="atomics_native"
1616 threads_if_any="$THREADS_LIST"
1617
1618 # subsystems
1619 dct_select="rdft"
1620 error_resilience_select="dsputil"
1621 lpc_select="dsputil"
1622 mdct_select="fft"
1623 rdft_select="fft"
1624 mpegaudio_select="mpegaudiodsp"
1625 mpegaudiodsp_select="dct"
1626 mpegvideo_select="dsputil hpeldsp videodsp"
1627 mpegvideoenc_select="mpegvideo"
1628
1629 # decoders / encoders
1630 aac_decoder_select="mdct sinewin"
1631 aac_encoder_select="audio_frame_queue mdct sinewin"
1632 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1633 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1634 ac3_encoder_select="mdct ac3dsp dsputil"
1635 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1636 aic_decoder_select="dsputil golomb"
1637 alac_encoder_select="lpc"
1638 als_decoder_select="dsputil"
1639 amrnb_decoder_select="lsp"
1640 amrwb_decoder_select="lsp"
1641 amv_decoder_select="dsputil hpeldsp"
1642 ape_decoder_select="dsputil"
1643 asv1_decoder_select="dsputil"
1644 asv1_encoder_select="dsputil"
1645 asv2_decoder_select="dsputil"
1646 asv2_encoder_select="dsputil"
1647 atrac1_decoder_select="mdct sinewin"
1648 atrac3_decoder_select="mdct"
1649 atrac3p_decoder_select="mdct sinewin"
1650 bink_decoder_select="dsputil hpeldsp"
1651 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1652 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1653 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1654 cllc_decoder_select="dsputil"
1655 comfortnoise_encoder_select="lpc"
1656 cook_decoder_select="dsputil mdct sinewin"
1657 cscd_decoder_select="lzo"
1658 cscd_decoder_suggest="zlib"
1659 dca_decoder_select="mdct"
1660 dnxhd_decoder_select="dsputil"
1661 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1662 dvvideo_decoder_select="dsputil"
1663 dvvideo_encoder_select="dsputil"
1664 dxa_decoder_deps="zlib"
1665 eac3_decoder_select="ac3_decoder"
1666 eac3_encoder_select="ac3_encoder"
1667 eamad_decoder_select="aandcttables dsputil mpegvideo"
1668 eatgq_decoder_select="aandcttables dsputil"
1669 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1670 ffv1_decoder_select="dsputil golomb rangecoder"
1671 ffv1_encoder_select="dsputil rangecoder"
1672 ffvhuff_decoder_select="dsputil"
1673 ffvhuff_encoder_select="dsputil huffman"
1674 fic_decoder_select="dsputil golomb"
1675 flac_decoder_select="golomb"
1676 flac_encoder_select="dsputil golomb lpc"
1677 flashsv_decoder_deps="zlib"
1678 flashsv_encoder_deps="zlib"
1679 flashsv2_decoder_deps="zlib"
1680 flv_decoder_select="h263_decoder"
1681 flv_encoder_select="h263_encoder"
1682 fourxm_decoder_select="dsputil"
1683 fraps_decoder_select="dsputil huffman"
1684 g2m_decoder_deps="zlib"
1685 g2m_decoder_select="dsputil"
1686 h261_decoder_select="error_resilience mpegvideo"
1687 h261_encoder_select="aandcttables mpegvideoenc"
1688 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1689 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1690 h263i_decoder_select="h263_decoder"
1691 h263p_encoder_select="h263_encoder"
1692 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1693 h264_decoder_suggest="error_resilience"
1694 hevc_decoder_select="dsputil golomb videodsp"
1695 huffyuv_decoder_select="dsputil"
1696 huffyuv_encoder_select="dsputil huffman"
1697 iac_decoder_select="dsputil fft mdct sinewin"
1698 imc_decoder_select="dsputil fft mdct sinewin"
1699 indeo3_decoder_select="hpeldsp"
1700 interplay_video_decoder_select="hpeldsp"
1701 jpegls_decoder_select="dsputil golomb hpeldsp"
1702 jpegls_encoder_select="golomb"
1703 jv_decoder_select="dsputil"
1704 lagarith_decoder_select="dsputil"
1705 ljpeg_encoder_select="aandcttables mpegvideoenc"
1706 loco_decoder_select="golomb"
1707 mdec_decoder_select="dsputil error_resilience mpegvideo"
1708 metasound_decoder_select="lsp mdct sinewin"
1709 mimic_decoder_select="dsputil hpeldsp"
1710 mjpeg_decoder_select="dsputil hpeldsp"
1711 mjpegb_decoder_select="dsputil hpeldsp"
1712 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1713 mlp_decoder_select="dsputil mlp_parser"
1714 motionpixels_decoder_select="dsputil"
1715 mp1_decoder_select="mpegaudio"
1716 mp1float_decoder_select="mpegaudio"
1717 mp2_decoder_select="mpegaudio"
1718 mp2float_decoder_select="mpegaudio"
1719 mp3_decoder_select="mpegaudio"
1720 mp3adu_decoder_select="mpegaudio"
1721 mp3adufloat_decoder_select="mpegaudio"
1722 mp3float_decoder_select="mpegaudio"
1723 mp3on4_decoder_select="mpegaudio"
1724 mp3on4float_decoder_select="mpegaudio"
1725 mpc7_decoder_select="dsputil mpegaudiodsp"
1726 mpc8_decoder_select="dsputil mpegaudiodsp"
1727 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1728 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1729 mpeg1video_decoder_select="error_resilience mpegvideo"
1730 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1731 mpeg2video_decoder_select="error_resilience mpegvideo"
1732 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1733 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1734 mpeg4_encoder_select="h263_encoder"
1735 msmpeg4v1_decoder_select="h263_decoder"
1736 msmpeg4v2_decoder_select="h263_decoder"
1737 msmpeg4v2_encoder_select="h263_encoder"
1738 msmpeg4v3_decoder_select="h263_decoder"
1739 msmpeg4v3_encoder_select="h263_encoder"
1740 mss2_decoder_select="error_resilience vc1_decoder"
1741 mxpeg_decoder_select="dsputil hpeldsp"
1742 nellymoser_decoder_select="mdct sinewin"
1743 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1744 nuv_decoder_select="dsputil lzo"
1745 png_decoder_deps="zlib"
1746 png_decoder_select="dsputil"
1747 png_encoder_deps="zlib"
1748 png_encoder_select="dsputil"
1749 prores_decoder_select="dsputil"
1750 prores_encoder_select="dsputil"
1751 qcelp_decoder_select="lsp"
1752 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1753 ra_144_encoder_select="audio_frame_queue lpc"
1754 ralf_decoder_select="golomb"
1755 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1756 rv10_encoder_select="h263_encoder"
1757 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1758 rv20_encoder_select="h263_encoder"
1759 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1760 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1761 shorten_decoder_select="golomb"
1762 sipr_decoder_select="lsp"
1763 sp5x_decoder_select="dsputil hpeldsp"
1764 svq1_decoder_select="hpeldsp"
1765 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1766 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1767 svq3_decoder_suggest="error_resilience zlib"
1768 tak_decoder_select="dsputil"
1769 theora_decoder_select="vp3_decoder"
1770 tiff_decoder_suggest="zlib"
1771 tiff_encoder_suggest="zlib"
1772 thp_decoder_select="dsputil hpeldsp"
1773 truehd_decoder_select="mlp_decoder"
1774 truemotion2_decoder_select="dsputil"
1775 truespeech_decoder_select="dsputil"
1776 tscc_decoder_deps="zlib"
1777 twinvq_decoder_select="mdct lsp sinewin"
1778 utvideo_decoder_select="dsputil"
1779 utvideo_encoder_select="dsputil huffman"
1780 vble_decoder_select="dsputil"
1781 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1782 vc1image_decoder_select="vc1_decoder"
1783 vorbis_decoder_select="mdct"
1784 vorbis_encoder_select="mdct"
1785 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1786 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1787 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1788 vp6a_decoder_select="vp6_decoder"
1789 vp6f_decoder_select="vp6_decoder"
1790 vp8_decoder_select="h264pred videodsp"
1791 vp9_decoder_select="videodsp"
1792 webp_decoder_select="vp8_decoder"
1793 wmapro_decoder_select="mdct sinewin"
1794 wmav1_decoder_select="mdct sinewin"
1795 wmav1_encoder_select="mdct sinewin"
1796 wmav2_decoder_select="mdct sinewin"
1797 wmav2_encoder_select="mdct sinewin"
1798 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1799 wmv1_decoder_select="h263_decoder"
1800 wmv1_encoder_select="h263_encoder"
1801 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1802 wmv2_encoder_select="h263_encoder"
1803 wmv3_decoder_select="vc1_decoder"
1804 wmv3image_decoder_select="wmv3_decoder"
1805 zerocodec_decoder_deps="zlib"
1806 zlib_decoder_deps="zlib"
1807 zlib_encoder_deps="zlib"
1808 zmbv_decoder_deps="zlib"
1809 zmbv_encoder_deps="zlib"
1810
1811 # hardware accelerators
1812 dxva2_deps="dxva2api_h"
1813 vaapi_deps="va_va_h"
1814 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1815 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1816 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1817
1818 h263_vaapi_hwaccel_deps="vaapi"
1819 h263_vaapi_hwaccel_select="h263_decoder"
1820 h263_vdpau_hwaccel_deps="vdpau"
1821 h263_vdpau_hwaccel_select="h263_decoder"
1822 h264_dxva2_hwaccel_deps="dxva2"
1823 h264_dxva2_hwaccel_select="h264_decoder"
1824 h264_vaapi_hwaccel_deps="vaapi"
1825 h264_vaapi_hwaccel_select="h264_decoder"
1826 h264_vda_hwaccel_deps="vda"
1827 h264_vda_hwaccel_select="h264_decoder"
1828 h264_vdpau_hwaccel_deps="vdpau"
1829 h264_vdpau_hwaccel_select="h264_decoder"
1830 mpeg1_vdpau_hwaccel_deps="vdpau"
1831 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1832 mpeg2_dxva2_hwaccel_deps="dxva2"
1833 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1834 mpeg2_vaapi_hwaccel_deps="vaapi"
1835 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1836 mpeg2_vdpau_hwaccel_deps="vdpau"
1837 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1838 mpeg4_vaapi_hwaccel_deps="vaapi"
1839 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1840 mpeg4_vdpau_hwaccel_deps="vdpau"
1841 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1842 vc1_dxva2_hwaccel_deps="dxva2"
1843 vc1_dxva2_hwaccel_select="vc1_decoder"
1844 vc1_vaapi_hwaccel_deps="vaapi"
1845 vc1_vaapi_hwaccel_select="vc1_decoder"
1846 vc1_vdpau_hwaccel_deps="vdpau"
1847 vc1_vdpau_hwaccel_select="vc1_decoder"
1848 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1849 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1850 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1851
1852 # parsers
1853 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1854 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1855 mpegvideo_parser_select="error_resilience mpegvideo"
1856 vc1_parser_select="mpegvideo"
1857
1858 # external libraries
1859 libfaac_encoder_deps="libfaac"
1860 libfaac_encoder_select="audio_frame_queue"
1861 libfdk_aac_decoder_deps="libfdk_aac"
1862 libfdk_aac_encoder_deps="libfdk_aac"
1863 libfdk_aac_encoder_select="audio_frame_queue"
1864 libgsm_decoder_deps="libgsm"
1865 libgsm_encoder_deps="libgsm"
1866 libgsm_ms_decoder_deps="libgsm"
1867 libgsm_ms_encoder_deps="libgsm"
1868 libilbc_decoder_deps="libilbc"
1869 libilbc_encoder_deps="libilbc"
1870 libmp3lame_encoder_deps="libmp3lame"
1871 libmp3lame_encoder_select="audio_frame_queue"
1872 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1873 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1874 libopencore_amrnb_encoder_select="audio_frame_queue"
1875 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1876 libopenjpeg_decoder_deps="libopenjpeg"
1877 libopenjpeg_encoder_deps="libopenjpeg"
1878 libopus_decoder_deps="libopus"
1879 libopus_encoder_deps="libopus"
1880 libopus_encoder_select="audio_frame_queue"
1881 libschroedinger_decoder_deps="libschroedinger"
1882 libschroedinger_encoder_deps="libschroedinger"
1883 libspeex_decoder_deps="libspeex"
1884 libspeex_encoder_deps="libspeex"
1885 libspeex_encoder_select="audio_frame_queue"
1886 libtheora_encoder_deps="libtheora"
1887 libvo_aacenc_encoder_deps="libvo_aacenc"
1888 libvo_aacenc_encoder_select="audio_frame_queue"
1889 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1890 libvorbis_encoder_deps="libvorbis"
1891 libvorbis_encoder_select="audio_frame_queue"
1892 libvpx_vp8_decoder_deps="libvpx"
1893 libvpx_vp8_encoder_deps="libvpx"
1894 libvpx_vp9_decoder_deps="libvpx"
1895 libvpx_vp9_encoder_deps="libvpx"
1896 libwavpack_encoder_deps="libwavpack"
1897 libwebp_encoder_deps="libwebp"
1898 libx264_encoder_deps="libx264"
1899 libx265_encoder_deps="libx265"
1900 libxavs_encoder_deps="libxavs"
1901 libxvid_encoder_deps="libxvid"
1902
1903 # demuxers / muxers
1904 ac3_demuxer_select="ac3_parser"
1905 asf_demuxer_select="riffdec"
1906 asf_muxer_select="riffenc"
1907 asf_stream_muxer_select="asf_muxer"
1908 avi_demuxer_select="riffdec"
1909 avi_muxer_select="riffenc"
1910 avisynth_demuxer_deps="avisynth"
1911 avisynth_demuxer_select="riffdec"
1912 caf_demuxer_select="riffdec"
1913 dirac_demuxer_select="dirac_parser"
1914 dxa_demuxer_select="riffdec"
1915 eac3_demuxer_select="ac3_parser"
1916 f4v_muxer_select="mov_muxer"
1917 flac_demuxer_select="flac_parser"
1918 hds_muxer_select="flv_muxer"
1919 hls_muxer_select="mpegts_muxer"
1920 ipod_muxer_select="mov_muxer"
1921 ismv_muxer_select="mov_muxer"
1922 matroska_audio_muxer_select="matroska_muxer"
1923 matroska_demuxer_select="riffdec"
1924 matroska_demuxer_suggest="bzlib lzo zlib"
1925 matroska_muxer_select="riffenc"
1926 mmf_muxer_select="riffenc"
1927 mov_demuxer_select="riffdec"
1928 mov_demuxer_suggest="zlib"
1929 mov_muxer_select="riffenc rtpenc_chain"
1930 mp3_demuxer_select="mpegaudio_parser"
1931 mp4_muxer_select="mov_muxer"
1932 mpegts_muxer_select="adts_muxer latm_muxer"
1933 mpegtsraw_demuxer_select="mpegts_demuxer"
1934 mxf_d10_muxer_select="mxf_muxer"
1935 nut_muxer_select="riffenc"
1936 nuv_demuxer_select="riffdec"
1937 ogg_demuxer_select="golomb"
1938 psp_muxer_select="mov_muxer"
1939 rtp_demuxer_select="sdp_demuxer"
1940 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1941 rtsp_demuxer_select="http_protocol rtpdec"
1942 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1943 sap_demuxer_select="sdp_demuxer"
1944 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1945 sdp_demuxer_select="rtpdec"
1946 smoothstreaming_muxer_select="ismv_muxer"
1947 spdif_muxer_select="aac_parser"
1948 tak_demuxer_select="tak_parser"
1949 tg2_muxer_select="mov_muxer"
1950 tgp_muxer_select="mov_muxer"
1951 w64_demuxer_select="wav_demuxer"
1952 wav_demuxer_select="riffdec"
1953 wav_muxer_select="riffenc"
1954 webm_muxer_select="riffenc"
1955 wtv_demuxer_select="riffdec"
1956 xmv_demuxer_select="riffdec"
1957 xwma_demuxer_select="riffdec"
1958
1959 # indevs / outdevs
1960 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1961 alsa_outdev_deps="alsa_asoundlib_h"
1962 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1963 dv1394_indev_deps="dv1394"
1964 dv1394_indev_select="dv_demuxer"
1965 fbdev_indev_deps="linux_fb_h"
1966 jack_indev_deps="jack_jack_h pthreads"
1967 libcdio_indev_deps="libcdio"
1968 libdc1394_indev_deps="libdc1394"
1969 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1970 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1971 pulse_indev_deps="libpulse"
1972 sndio_indev_deps="sndio_h"
1973 sndio_outdev_deps="sndio_h"
1974 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1975 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1976 vfwcap_indev_extralibs="-lavicap32"
1977 x11grab_indev_deps="x11grab XShmCreateImage"
1978
1979 # protocols
1980 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1981 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1982 ffrtmpcrypt_protocol_select="tcp_protocol"
1983 ffrtmphttp_protocol_deps="!librtmp_protocol"
1984 ffrtmphttp_protocol_select="http_protocol"
1985 gopher_protocol_select="network"
1986 httpproxy_protocol_select="tcp_protocol"
1987 http_protocol_select="tcp_protocol"
1988 https_protocol_select="tls_protocol"
1989 librtmp_protocol_deps="librtmp"
1990 librtmpe_protocol_deps="librtmp"
1991 librtmps_protocol_deps="librtmp"
1992 librtmpt_protocol_deps="librtmp"
1993 librtmpte_protocol_deps="librtmp"
1994 mmsh_protocol_select="http_protocol"
1995 mmst_protocol_select="network"
1996 rtmp_protocol_deps="!librtmp_protocol"
1997 rtmp_protocol_select="tcp_protocol"
1998 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1999 rtmps_protocol_deps="!librtmp_protocol"
2000 rtmps_protocol_select="tls_protocol"
2001 rtmpt_protocol_select="ffrtmphttp_protocol"
2002 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2003 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2004 rtp_protocol_select="udp_protocol"
2005 sctp_protocol_deps="struct_sctp_event_subscribe"
2006 sctp_protocol_select="network"
2007 srtp_protocol_select="rtp_protocol"
2008 tcp_protocol_select="network"
2009 tls_protocol_deps_any="openssl gnutls"
2010 tls_protocol_select="tcp_protocol"
2011 udp_protocol_select="network"
2012 unix_protocol_deps="sys_un_h"
2013 unix_protocol_select="network"
2014
2015 # filters
2016 blackframe_filter_deps="gpl"
2017 boxblur_filter_deps="gpl"
2018 compand_filter_deps="strtok_r"
2019 cropdetect_filter_deps="gpl"
2020 delogo_filter_deps="gpl"
2021 drawtext_filter_deps="libfreetype"
2022 frei0r_filter_deps="frei0r dlopen strtok_r"
2023 frei0r_filter_extralibs='$ldl'
2024 frei0r_src_filter_deps="frei0r dlopen strtok_r"
2025 frei0r_src_filter_extralibs='$ldl'
2026 hqdn3d_filter_deps="gpl"
2027 interlace_filter_deps="gpl"
2028 resample_filter_deps="avresample"
2029 ocv_filter_deps="libopencv"
2030 scale_filter_deps="swscale"
2031
2032 # examples
2033 avcodec_example_deps="avcodec avutil"
2034 filter_audio_example_deps="avfilter avutil"
2035 metadata_example_deps="avformat avutil"
2036 output_example_deps="avcodec avformat avutil swscale"
2037 transcode_aac_example_deps="avcodec avformat avresample"
2038
2039 # libraries
2040 avcodec_deps="avutil"
2041 avdevice_deps="avutil avcodec avformat"
2042 avfilter_deps="avutil"
2043 avformat_deps="avutil avcodec"
2044 avresample_deps="avutil"
2045 swscale_deps="avutil"
2046
2047 # programs
2048 avconv_deps="avcodec avfilter avformat avresample swscale"
2049 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2050                fps_filter null_filter resample_filter scale_filter
2051                setpts_filter trim_filter"
2052 avplay_deps="avcodec avformat avresample swscale sdl"
2053 avplay_libs='$sdl_libs'
2054 avplay_select="rdft"
2055 avprobe_deps="avcodec avformat"
2056 avserver_deps="avformat fork !shared"
2057 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2058
2059 # documentation
2060 pod2man_deps="doc"
2061 texi2html_deps="doc"
2062
2063 # default parameters
2064
2065 logfile="config.log"
2066
2067 # installation paths
2068 prefix_default="/usr/local"
2069 bindir_default='${prefix}/bin'
2070 datadir_default='${prefix}/share/avconv'
2071 docdir_default='${prefix}/share/doc/libav'
2072 incdir_default='${prefix}/include'
2073 libdir_default='${prefix}/lib'
2074 mandir_default='${prefix}/share/man'
2075 shlibdir_default="$libdir_default"
2076
2077 # toolchain
2078 ar_default="ar"
2079 cc_default="gcc"
2080 host_cc_default="gcc"
2081 cp_f="cp -f"
2082 ln_s="ln -s -f"
2083 nm_default="nm -g"
2084 objformat="elf"
2085 pkg_config_default=pkg-config
2086 ranlib="ranlib"
2087 strip="strip"
2088 yasmexe="yasm"
2089
2090 nogas=":"
2091
2092 # machine
2093 arch_default=$(uname -m)
2094 cpu="generic"
2095
2096 # OS
2097 target_os_default=$(tolower $(uname -s))
2098 host_os=$target_os_default
2099
2100 # configurable options
2101 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2102
2103 enable asm
2104 enable debug
2105 enable doc
2106 enable optimizations
2107 enable safe_bitstream_reader
2108 enable static
2109 enable swscale_alpha
2110
2111 # By default, enable only those hwaccels that have no external dependencies.
2112 enable dxva2 vdpau
2113
2114 # build settings
2115 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2116 LIBPREF="lib"
2117 LIBSUF=".a"
2118 FULLNAME='$(NAME)$(BUILDSUF)'
2119 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2120 SLIBPREF="lib"
2121 SLIBSUF=".so"
2122 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2123 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2124 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2125 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2126 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2127 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2128
2129 asflags_filter=echo
2130 cflags_filter=echo
2131 ldflags_filter=echo
2132
2133 AS_C='-c'
2134 AS_O='-o $@'
2135 CC_C='-c'
2136 CC_E='-E -o $@'
2137 CC_O='-o $@'
2138 LD_O='-o $@'
2139 LD_LIB='-l%'
2140 LD_PATH='-L'
2141 HOSTCC_C='-c'
2142 HOSTCC_E='-E -o $@'
2143 HOSTCC_O='-o $@'
2144 HOSTLD_O='-o $@'
2145
2146 host_libs='-lm'
2147 host_cflags_filter=echo
2148 host_ldflags_filter=echo
2149
2150 target_path='$(CURDIR)'
2151
2152 # since the object filename is not given with the -MM flag, the compiler
2153 # is only able to print the basename, and we must add the path ourselves
2154 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2155 DEPFLAGS='-MM'
2156
2157 # find source path
2158 if test -f configure; then
2159     source_path=.
2160 else
2161     source_path=$(cd $(dirname "$0"); pwd)
2162     echo "$source_path" | grep -q '[[:blank:]]' &&
2163         die "Out of tree builds are impossible with whitespace in source path."
2164     test -e "$source_path/config.h" &&
2165         die "Out of tree builds are impossible with config.h in source dir."
2166 fi
2167
2168 for v in "$@"; do
2169     r=${v#*=}
2170     l=${v%"$r"}
2171     r=$(sh_quote "$r")
2172     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2173 done
2174
2175 find_things(){
2176     thing=$1
2177     pattern=$2
2178     file=$source_path/$3
2179     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2180 }
2181
2182 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2183 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2184 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2185 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2186 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2187 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2188 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2189 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2190 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2191 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2192 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2193
2194 ALL_COMPONENTS="
2195     $BSF_LIST
2196     $DECODER_LIST
2197     $DEMUXER_LIST
2198     $ENCODER_LIST
2199     $FILTER_LIST
2200     $HWACCEL_LIST
2201     $INDEV_LIST
2202     $MUXER_LIST
2203     $OUTDEV_LIST
2204     $PARSER_LIST
2205     $PROTOCOL_LIST
2206 "
2207
2208 for n in $COMPONENT_LIST; do
2209     v=$(toupper ${n%s})_LIST
2210     eval enable \$$v
2211     eval ${n}_if_any="\$$v"
2212 done
2213
2214 enable $ARCH_EXT_LIST
2215
2216 die_unknown(){
2217     echo "Unknown option \"$1\"."
2218     echo "See $0 --help for available options."
2219     exit 1
2220 }
2221
2222 print_3_columns() {
2223     cat | tr ' ' '\n' | sort | pr -r -3 -t
2224 }
2225
2226 show_list() {
2227     suffix=_$1
2228     shift
2229     echo $* | sed s/$suffix//g | print_3_columns
2230     exit 0
2231 }
2232
2233 rand_list(){
2234     IFS=', '
2235     set -- $*
2236     unset IFS
2237     for thing; do
2238         comp=${thing%:*}
2239         prob=${thing#$comp}
2240         prob=${prob#:}
2241         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2242         echo "prob ${prob:-0.5}"
2243         printf '%s\n' $comp
2244     done
2245 }
2246
2247 do_random(){
2248     action=$1
2249     shift
2250     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2251     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2252 }
2253
2254 for opt do
2255     optval="${opt#*=}"
2256     case "$opt" in
2257         --extra-ldflags=*)
2258             add_ldflags $optval
2259         ;;
2260         --extra-libs=*)
2261             add_extralibs $optval
2262         ;;
2263         --disable-devices)
2264             disable $INDEV_LIST $OUTDEV_LIST
2265         ;;
2266         --enable-debug=*)
2267             debuglevel="$optval"
2268         ;;
2269         --disable-programs)
2270             disable $PROGRAM_LIST
2271         ;;
2272         --disable-everything)
2273             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2274         ;;
2275         --disable-all)
2276             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2277             disable $LIBRARY_LIST $PROGRAM_LIST doc
2278         ;;
2279         --enable-random|--disable-random)
2280             action=${opt%%-random}
2281             do_random ${action#--} $COMPONENT_LIST
2282         ;;
2283         --enable-random=*|--disable-random=*)
2284             action=${opt%%-random=*}
2285             do_random ${action#--} $optval
2286         ;;
2287         --enable-*=*|--disable-*=*)
2288             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2289             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2290             eval list=\$$(toupper $thing)_LIST
2291             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2292             $action $(filter "$name" $list)
2293         ;;
2294         --enable-?*|--disable-?*)
2295             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2296             if is_in $option $COMPONENT_LIST; then
2297                 test $action = disable && action=unset
2298                 eval $action \$$(toupper ${option%s})_LIST
2299             elif is_in $option $CMDLINE_SELECT; then
2300                 $action $option
2301             else
2302                 die_unknown $opt
2303             fi
2304         ;;
2305         --list-*)
2306             NAME="${opt#--list-}"
2307             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2308             NAME=${NAME%s}
2309             eval show_list $NAME \$$(toupper $NAME)_LIST
2310         ;;
2311         --help|-h) show_help
2312         ;;
2313         *)
2314             optname="${opt%%=*}"
2315             optname="${optname#--}"
2316             optname=$(echo "$optname" | sed 's/-/_/g')
2317             if is_in $optname $CMDLINE_SET; then
2318                 eval $optname='$optval'
2319             elif is_in $optname $CMDLINE_APPEND; then
2320                 append $optname "$optval"
2321             else
2322                 die_unknown $opt
2323             fi
2324         ;;
2325     esac
2326 done
2327
2328 disabled logging && logfile=/dev/null
2329
2330 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2331 set >> $logfile
2332
2333 test -n "$cross_prefix" && enable cross_compile
2334
2335 if enabled cross_compile; then
2336     test -n "$arch" && test -n "$target_os" ||
2337         die "Must specify target arch and OS when cross-compiling"
2338 fi
2339
2340 ar_default="${cross_prefix}${ar_default}"
2341 cc_default="${cross_prefix}${cc_default}"
2342 nm_default="${cross_prefix}${nm_default}"
2343 pkg_config_default="${cross_prefix}${pkg_config_default}"
2344 ranlib="${cross_prefix}${ranlib}"
2345 strip="${cross_prefix}${strip}"
2346
2347 sysinclude_default="${sysroot}/usr/include"
2348
2349 case "$toolchain" in
2350     clang-asan)
2351         cc_default="clang"
2352         add_cflags  -fsanitize=address
2353         add_ldflags -fsanitize=address
2354     ;;
2355     clang-tsan)
2356         cc_default="clang"
2357         add_cflags  -fsanitize=thread -pie
2358         add_ldflags -fsanitize=thread -pie
2359     ;;
2360     clang-usan)
2361         cc_default="clang"
2362         add_cflags  -fsanitize=undefined
2363         add_ldflags -fsanitize=undefined
2364     ;;
2365     gcc-asan)
2366         cc_default="gcc"
2367         add_cflags  -fsanitize=address
2368         add_ldflags -fsanitize=address
2369     ;;
2370     gcc-tsan)
2371         cc_default="gcc"
2372         add_cflags  -fsanitize=thread -pie -fPIC
2373         add_ldflags -fsanitize=thread -pie -fPIC
2374     ;;
2375     gcc-usan)
2376         cc_default="gcc"
2377         add_cflags  -fsanitize=undefined
2378         add_ldflags -fsanitize=undefined
2379     ;;
2380     valgrind-massif)
2381         target_exec_default="valgrind"
2382         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2383     ;;
2384     valgrind-memcheck)
2385         target_exec_default="valgrind"
2386         target_exec_args="--track-origins=yes --leak-check=full"
2387     ;;
2388     msvc)
2389         # Check whether the current MSVC version needs the C99 converter.
2390         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2391         # support enough of C99 to build libav. Default to the new
2392         # behaviour if the regexp was unable to match anything, since this
2393         # successfully parses the version number of existing supported
2394         # versions that require the converter (MSVC 2010 and 2012).
2395         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2396         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2397             cc_default="cl"
2398         else
2399             cc_default="c99wrap cl"
2400         fi
2401         ld_default="link"
2402         nm_default="dumpbin -symbols"
2403         ar_default="lib"
2404         target_os_default="win32"
2405         # Use a relative path for TMPDIR. This makes sure all the
2406         # ffconf temp files are written with a relative path, avoiding
2407         # issues with msys/win32 path conversion for MSVC parameters
2408         # such as -Fo<file> or -out:<file>.
2409         TMPDIR=.
2410     ;;
2411     icl)
2412         cc_default="icl"
2413         ld_default="xilink"
2414         nm_default="dumpbin -symbols"
2415         ar_default="xilib"
2416         target_os_default="win32"
2417         TMPDIR=.
2418     ;;
2419     gcov)
2420         add_cflags  -fprofile-arcs -ftest-coverage
2421         add_ldflags -fprofile-arcs -ftest-coverage
2422     ;;
2423     hardened)
2424         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2425         add_ldflags -Wl,-z,relro -Wl,-z,now
2426     ;;
2427     ?*)
2428         die "Unknown toolchain $toolchain"
2429     ;;
2430 esac
2431
2432 set_default arch cc pkg_config sysinclude target_exec target_os
2433 enabled cross_compile || host_cc_default=$cc
2434 set_default host_cc
2435
2436 if ! $pkg_config --version >/dev/null 2>&1; then
2437     warn "$pkg_config not found, library detection may fail."
2438     pkg_config=false
2439 fi
2440
2441 exesuf() {
2442     case $1 in
2443         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2444     esac
2445 }
2446
2447 EXESUF=$(exesuf $target_os)
2448 HOSTEXESUF=$(exesuf $host_os)
2449
2450 # set temporary file name
2451 : ${TMPDIR:=$TEMPDIR}
2452 : ${TMPDIR:=$TMP}
2453 : ${TMPDIR:=/tmp}
2454
2455 if ! check_cmd mktemp -u XXXXXX; then
2456     # simple replacement for missing mktemp
2457     # NOT SAFE FOR GENERAL USE
2458     mktemp(){
2459         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2460     }
2461 fi
2462
2463 tmpfile(){
2464     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2465         (set -C; exec > $tmp) 2>/dev/null ||
2466         die "Unable to create temporary file in $TMPDIR."
2467     append TMPFILES $tmp
2468     eval $1=$tmp
2469 }
2470
2471 trap 'rm -f -- $TMPFILES' EXIT
2472
2473 tmpfile TMPASM .asm
2474 tmpfile TMPC   .c
2475 tmpfile TMPE   $EXESUF
2476 tmpfile TMPH   .h
2477 tmpfile TMPO   .o
2478 tmpfile TMPS   .S
2479 tmpfile TMPSH  .sh
2480 tmpfile TMPV   .ver
2481
2482 unset -f mktemp
2483
2484 chmod +x $TMPE
2485
2486 # make sure we can execute files in $TMPDIR
2487 cat > $TMPSH 2>> $logfile <<EOF
2488 #! /bin/sh
2489 EOF
2490 chmod +x $TMPSH >> $logfile 2>&1
2491 if ! $TMPSH >> $logfile 2>&1; then
2492     cat <<EOF
2493 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2494 variable to another directory and make sure that it is not mounted noexec.
2495 EOF
2496     die "Sanity test failed."
2497 fi
2498
2499 ccc_flags(){
2500     for flag; do
2501         case $flag in
2502             -std=c99)           echo -c99                       ;;
2503             -mcpu=*)            echo -arch ${flag#*=}           ;;
2504             -mieee)             echo -ieee                      ;;
2505             -O*|-fast)          echo $flag                      ;;
2506             -fno-math-errno)    echo -assume nomath_errno       ;;
2507             -g)                 echo -g3                        ;;
2508             -Wall)              echo -msg_enable level2         ;;
2509             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2510             -Wl,*)              echo $flag                      ;;
2511             -f*|-W*)                                            ;;
2512             *)                  echo $flag                      ;;
2513         esac
2514    done
2515 }
2516
2517 cparser_flags(){
2518     for flag; do
2519         case $flag in
2520             -Wno-switch)             echo -Wno-switch-enum ;;
2521             -Wno-format-zero-length) ;;
2522             -Wdisabled-optimization) ;;
2523             -Wno-pointer-sign)       echo -Wno-other ;;
2524             *)                       echo $flag ;;
2525         esac
2526     done
2527 }
2528
2529 msvc_common_flags(){
2530     for flag; do
2531         case $flag in
2532             # In addition to specifying certain flags under the compiler
2533             # specific filters, they must be specified here as well or else the
2534             # generic catch all at the bottom will print the original flag.
2535             -Wall)                ;;
2536             -std=c99)             ;;
2537             # Common flags
2538             -fomit-frame-pointer) ;;
2539             -g)                   echo -Z7 ;;
2540             -fno-math-errno)      ;;
2541             -fno-common)          ;;
2542             -fno-signed-zeros)    ;;
2543             -fPIC)                ;;
2544             -mthumb)              ;;
2545             -march=*)             ;;
2546             -lz)                  echo zlib.lib ;;
2547             -lavifil32)           echo vfw32.lib ;;
2548             -lavicap32)           echo vfw32.lib user32.lib ;;
2549             -l*)                  echo ${flag#-l}.lib ;;
2550             *)                    echo $flag ;;
2551         esac
2552     done
2553 }
2554
2555 msvc_flags(){
2556     msvc_common_flags "$@"
2557     for flag; do
2558         case $flag in
2559             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2560                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2561                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2562                                        -wd4273 ;;
2563         esac
2564     done
2565 }
2566
2567 icl_flags(){
2568     msvc_common_flags "$@"
2569     for flag; do
2570         case $flag in
2571             # Despite what Intel's documentation says -Wall, which is supported
2572             # on Windows, does enable remarks so disable them here.
2573             -Wall)                echo $flag -Qdiag-disable:remark ;;
2574             -std=c99)             echo -Qstd=c99 ;;
2575         esac
2576     done
2577 }
2578
2579 pgi_flags(){
2580     for flag; do
2581         case $flag in
2582             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2583             -fomit-frame-pointer) echo -Mnoframe ;;
2584             -g)                   echo -gopt ;;
2585             *)                    echo $flag ;;
2586         esac
2587     done
2588 }
2589
2590 suncc_flags(){
2591     for flag; do
2592         case $flag in
2593             -march=*|-mcpu=*)
2594                 case "${flag#*=}" in
2595                     native)                   echo -xtarget=native       ;;
2596                     v9|niagara)               echo -xarch=sparc          ;;
2597                     ultrasparc)               echo -xarch=sparcvis       ;;
2598                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2599                     i586|pentium)             echo -xchip=pentium        ;;
2600                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2601                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2602                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2603                     pentium4*)          echo -xtarget=pentium4           ;;
2604                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2605                     *-sse3)             echo -xarch=sse3                 ;;
2606                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2607                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2608                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2609                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2610                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2611                     k8|opteron|athlon64|athlon-fx)
2612                                                echo -xarch=sse2a         ;;
2613                     athlon*)                   echo -xarch=pentium_proa  ;;
2614                 esac
2615                 ;;
2616             -std=c99)             echo -xc99              ;;
2617             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2618             -fPIC)                echo -KPIC -xcode=pic32 ;;
2619             -W*,*)                echo $flag              ;;
2620             -f*-*|-W*|-mimpure-text)                      ;;
2621             -shared)              echo -G                 ;;
2622             *)                    echo $flag              ;;
2623         esac
2624     done
2625 }
2626
2627 tms470_flags(){
2628     for flag; do
2629         case $flag in
2630             -march=*|-mcpu=*)
2631                 case "${flag#*=}" in
2632                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2633                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2634                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2635                     armv6*|arm11*)          echo -mv=6   ;;
2636                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2637                                             echo -mv=5e  ;;
2638                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2639                 esac
2640                 ;;
2641             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2642             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2643             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2644             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2645             -msoft-float)   echo --float_support=vfplib       ;;
2646             -O[0-3]|-mf=*)  echo $flag                        ;;
2647             -g)             echo -g -mn                       ;;
2648             -pds=*)         echo $flag                        ;;
2649             -D*|-I*)        echo $flag                        ;;
2650             --gcc|--abi=*)  echo $flag                        ;;
2651             -me)            echo $flag                        ;;
2652         esac
2653     done
2654 }
2655
2656 probe_cc(){
2657     pfx=$1
2658     _cc=$2
2659
2660     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2661     unset _ld_o _ldflags _ld_lib _ld_path
2662     unset _depflags _DEPCMD _DEPFLAGS
2663     _flags_filter=echo
2664
2665     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2666         _type=llvm_gcc
2667         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2668         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2669         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2670         _cflags_speed='-O3'
2671         _cflags_size='-Os'
2672     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2673         _type=gcc
2674         gcc_version=$($_cc --version | head -n1)
2675         gcc_basever=$($_cc -dumpversion)
2676         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2677         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2678         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2679         if ! $_cc -dumpversion | grep -q '^2\.'; then
2680             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2681         fi
2682         _cflags_speed='-O3'
2683         _cflags_size='-Os'
2684     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2685         _type=icc
2686         _ident=$($_cc --version | head -n1)
2687         _depflags='-MMD'
2688         _cflags_speed='-O3'
2689         _cflags_size='-Os'
2690         _cflags_noopt='-O1'
2691     elif $_cc -v 2>&1 | grep -q xlc; then
2692         _type=xlc
2693         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2694         _cflags_speed='-O5'
2695         _cflags_size='-O5 -qcompact'
2696     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2697         _type=ccc
2698         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2699         _DEPFLAGS='-M'
2700         _cflags_speed='-fast'
2701         _cflags_size='-O1'
2702         _flags_filter=ccc_flags
2703     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2704         test -d "$sysroot" || die "No valid sysroot specified."
2705         _type=armcc
2706         _ident=$($_cc --vsn | head -n1)
2707         armcc_conf="$PWD/armcc.conf"
2708         $_cc --arm_linux_configure                 \
2709              --arm_linux_config_file="$armcc_conf" \
2710              --configure_sysroot="$sysroot"        \
2711              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2712              die "Error creating armcc configuration file."
2713         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2714         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2715         as_default="${cross_prefix}gcc"
2716         _depflags='-MMD'
2717         _cflags_speed='-O3'
2718         _cflags_size='-Os'
2719     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2720         _type=tms470
2721         _ident=$($_cc -version | head -n1 | tr -s ' ')
2722         _flags='--gcc --abi=eabi -me'
2723         _cc_e='-ppl -fe=$@'
2724         _cc_o='-fe=$@'
2725         _depflags='-ppa -ppd=$(@:.o=.d)'
2726         _cflags_speed='-O3 -mf=5'
2727         _cflags_size='-O3 -mf=2'
2728         _flags_filter=tms470_flags
2729     elif $_cc -v 2>&1 | grep -q clang; then
2730         _type=clang
2731         _ident=$($_cc --version | head -n1)
2732         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2733         _cflags_speed='-O3'
2734         _cflags_size='-Os'
2735     elif $_cc -V 2>&1 | grep -q Sun; then
2736         _type=suncc
2737         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2738         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2739         _DEPFLAGS='-xM1 -xc99'
2740         _ldflags='-std=c99'
2741         _cflags_speed='-O5'
2742         _cflags_size='-O5 -xspace'
2743         _flags_filter=suncc_flags
2744     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2745         _type=pathscale
2746         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2747         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2748         _cflags_speed='-O2'
2749         _cflags_size='-Os'
2750         _flags_filter='filter_out -Wdisabled-optimization'
2751     elif $_cc -v 2>&1 | grep -q Open64; then
2752         _type=open64
2753         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2754         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2755         _cflags_speed='-O2'
2756         _cflags_size='-Os'
2757         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2758     elif $_cc -V 2>&1 | grep -q Portland; then
2759         _type=pgi
2760         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2761         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2762         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2763         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2764         _cflags_noopt="-O1"
2765         _flags_filter=pgi_flags
2766     elif $_cc 2>&1 | grep -q Microsoft; then
2767         _type=msvc
2768         _ident=$($cc 2>&1 | head -n1)
2769         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2770         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2771         _cflags_speed="-O2"
2772         _cflags_size="-O1"
2773         if $_cc 2>&1 | grep -q Linker; then
2774             _ld_o='-out:$@'
2775         else
2776             _ld_o='-Fe$@'
2777         fi
2778         _cc_o='-Fo$@'
2779         _cc_e='-P -Fi$@'
2780         _flags_filter=msvc_flags
2781         _ld_lib='lib%.a'
2782         _ld_path='-libpath:'
2783         _flags='-nologo'
2784         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2785         if [ $pfx = hostcc ]; then
2786             append _cflags -Dsnprintf=_snprintf
2787         fi
2788     elif $_cc 2>&1 | grep -q Intel; then
2789         _type=icl
2790         _ident=$($cc 2>&1 | head -n1)
2791         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2792         # Not only is O3 broken on 13.x+ but it is slower on all previous
2793         # versions (tested) as well.
2794         _cflags_speed="-O2"
2795         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2796         if $_cc 2>&1 | grep -q Linker; then
2797             _ld_o='-out:$@'
2798         else
2799             _ld_o='-Fe$@'
2800         fi
2801         _cc_o='-Fo$@'
2802         _cc_e='-P'
2803         _flags_filter=icl_flags
2804         _ld_lib='lib%.a'
2805         _ld_path='-libpath:'
2806         # -Qdiag-error to make icl error when seeing certain unknown arguments
2807         _flags='-nologo -Qdiag-error:4044,10157'
2808         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2809         # with MSVC which enables it by default.
2810         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2811         if [ $pfx = hostcc ]; then
2812             append _cflags -Dsnprintf=_snprintf
2813         fi
2814     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2815         _type=cparser
2816         _ident=$($_cc --version | head -n1)
2817         _depflags='-MMD'
2818         _cflags_speed='-O4'
2819         _cflags_size='-O2'
2820         _flags_filter=cparser_flags
2821     fi
2822
2823     eval ${pfx}_type=\$_type
2824     eval ${pfx}_ident=\$_ident
2825 }
2826
2827 set_ccvars(){
2828     eval ${1}_C=\${_cc_c-\${${1}_C}}
2829     eval ${1}_E=\${_cc_e-\${${1}_E}}
2830     eval ${1}_O=\${_cc_o-\${${1}_O}}
2831
2832     if [ -n "$_depflags" ]; then
2833         eval ${1}_DEPFLAGS=\$_depflags
2834     else
2835         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2836         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2837         eval DEP${1}FLAGS=\$_flags
2838     fi
2839 }
2840
2841 probe_cc cc "$cc"
2842 cflags_filter=$_flags_filter
2843 cflags_speed=$_cflags_speed
2844 cflags_size=$_cflags_size
2845 cflags_noopt=$_cflags_noopt
2846 add_cflags $_flags $_cflags
2847 cc_ldflags=$_ldflags
2848 set_ccvars CC
2849
2850 probe_cc hostcc "$host_cc"
2851 host_cflags_filter=$_flags_filter
2852 add_host_cflags  $_flags $_cflags
2853 set_ccvars HOSTCC
2854
2855 test -n "$cc_type" && enable $cc_type ||
2856     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2857
2858 : ${as_default:=$cc}
2859 : ${dep_cc_default:=$cc}
2860 : ${ld_default:=$cc}
2861 : ${host_ld_default:=$host_cc}
2862 set_default ar as dep_cc ld host_ld
2863
2864 probe_cc as "$as"
2865 asflags_filter=$_flags_filter
2866 add_asflags $_flags $_cflags
2867 set_ccvars AS
2868
2869 probe_cc ld "$ld"
2870 ldflags_filter=$_flags_filter
2871 add_ldflags $_flags $_ldflags
2872 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2873 LD_O=${_ld_o-$LD_O}
2874 LD_LIB=${_ld_lib-$LD_LIB}
2875 LD_PATH=${_ld_path-$LD_PATH}
2876
2877 probe_cc hostld "$host_ld"
2878 host_ldflags_filter=$_flags_filter
2879 add_host_ldflags $_flags $_ldflags
2880 HOSTLD_O=${_ld_o-$HOSTLD_O}
2881
2882 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2883     probe_cc depcc "$dep_cc"
2884     CCDEP=${_DEPCMD:-$DEPCMD}
2885     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2886     DEPCCFLAGS=$_flags
2887 fi
2888
2889 if $ar 2>&1 | grep -q Microsoft; then
2890     arflags="-nologo"
2891     ar_o='-out:$@'
2892 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2893     arflags="rq"
2894     ar_o='$@'
2895 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2896     arflags='-Xany -r -c'
2897     ar_o='$@'
2898 else
2899     arflags="rc"
2900     ar_o='$@'
2901 fi
2902
2903 add_cflags $extra_cflags
2904 add_asflags $extra_cflags
2905
2906 if test -n "$sysroot"; then
2907     case "$cc_type" in
2908         gcc|llvm_gcc|clang)
2909             add_cppflags --sysroot="$sysroot"
2910             add_ldflags --sysroot="$sysroot"
2911         ;;
2912         tms470)
2913             add_cppflags -I"$sysinclude"
2914             add_ldflags  --sysroot="$sysroot"
2915         ;;
2916     esac
2917 fi
2918
2919 if test "$cpu" = host; then
2920     enabled cross_compile &&
2921         die "--cpu=host makes no sense when cross-compiling."
2922
2923     case "$cc_type" in
2924         gcc|llvm_gcc)
2925             check_native(){
2926                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2927                 sed -n "/cc1.*$1=/{
2928                             s/.*$1=\\([^ ]*\\).*/\\1/
2929                             p
2930                             q
2931                         }" $TMPE
2932             }
2933             cpu=$(check_native -march || check_native -mcpu)
2934         ;;
2935     esac
2936
2937     test "${cpu:-host}" = host &&
2938         die "--cpu=host not supported with compiler $cc"
2939 fi
2940
2941 # Deal with common $arch aliases
2942 case "$arch" in
2943     aarch64|arm64)
2944         arch="aarch64"
2945     ;;
2946     arm*)
2947         arch="arm"
2948     ;;
2949     mips*|IP*)
2950         arch="mips"
2951     ;;
2952     parisc*|hppa*)
2953         arch="parisc"
2954     ;;
2955     "Power Macintosh"|ppc*|powerpc*)
2956         arch="ppc"
2957     ;;
2958     s390|s390x)
2959         arch="s390"
2960     ;;
2961     sh4|sh)
2962         arch="sh4"
2963     ;;
2964     sun4u|sparc*)
2965         arch="sparc"
2966     ;;
2967     tilegx|tile-gx)
2968         arch="tilegx"
2969     ;;
2970     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2971         arch="x86"
2972     ;;
2973 esac
2974
2975 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2976 enable $arch
2977
2978 # Add processor-specific flags
2979 if enabled aarch64; then
2980
2981     case $cpu in
2982         armv*)
2983             cpuflags="-march=$cpu"
2984         ;;
2985         *)
2986             cpuflags="-mcpu=$cpu"
2987         ;;
2988     esac
2989
2990 elif enabled alpha; then
2991
2992     cpuflags="-mcpu=$cpu"
2993
2994 elif enabled arm; then
2995
2996     check_arm_arch() {
2997         check_cpp_condition stddef.h \
2998             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2999             $cpuflags
3000     }
3001
3002     probe_arm_arch() {
3003         if   check_arm_arch 4;        then echo armv4;
3004         elif check_arm_arch 4T;       then echo armv4t;
3005         elif check_arm_arch 5;        then echo armv5;
3006         elif check_arm_arch 5E;       then echo armv5e;
3007         elif check_arm_arch 5T;       then echo armv5t;
3008         elif check_arm_arch 5TE;      then echo armv5te;
3009         elif check_arm_arch 5TEJ;     then echo armv5te;
3010         elif check_arm_arch 6;        then echo armv6;
3011         elif check_arm_arch 6J;       then echo armv6j;
3012         elif check_arm_arch 6K;       then echo armv6k;
3013         elif check_arm_arch 6Z;       then echo armv6z;
3014         elif check_arm_arch 6ZK;      then echo armv6zk;
3015         elif check_arm_arch 6T2;      then echo armv6t2;
3016         elif check_arm_arch 7;        then echo armv7;
3017         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3018         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3019         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3020         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3021         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3022         fi
3023     }
3024
3025     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3026
3027     case $cpu in
3028         armv*)
3029             cpuflags="-march=$cpu"
3030             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3031         ;;
3032         *)
3033             cpuflags="-mcpu=$cpu"
3034             case $cpu in
3035                 cortex-a*)                               subarch=armv7a  ;;
3036                 cortex-r*)                               subarch=armv7r  ;;
3037                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3038                 arm11*)                                  subarch=armv6   ;;
3039                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3040                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3041                 *)                             subarch=$(probe_arm_arch) ;;
3042             esac
3043         ;;
3044     esac
3045
3046     case "$subarch" in
3047         armv5t*)    enable fast_clz                ;;
3048         armv[6-8]*) enable fast_clz fast_unaligned ;;
3049     esac
3050
3051 elif enabled avr32; then
3052
3053     case $cpu in
3054         ap7[02]0[0-2])
3055             subarch="avr32_ap"
3056             cpuflags="-mpart=$cpu"
3057         ;;
3058         ap)
3059             subarch="avr32_ap"
3060             cpuflags="-march=$cpu"
3061         ;;
3062         uc3[ab]*)
3063             subarch="avr32_uc"
3064             cpuflags="-mcpu=$cpu"
3065         ;;
3066         uc)
3067             subarch="avr32_uc"
3068             cpuflags="-march=$cpu"
3069         ;;
3070     esac
3071
3072 elif enabled bfin; then
3073
3074     cpuflags="-mcpu=$cpu"
3075
3076 elif enabled mips; then
3077
3078     cpuflags="-march=$cpu"
3079
3080 elif enabled ppc; then
3081
3082     case $(tolower $cpu) in
3083         601|ppc601|powerpc601)
3084             cpuflags="-mcpu=601"
3085             disable altivec
3086         ;;
3087         603*|ppc603*|powerpc603*)
3088             cpuflags="-mcpu=603"
3089             disable altivec
3090         ;;
3091         604*|ppc604*|powerpc604*)
3092             cpuflags="-mcpu=604"
3093             disable altivec
3094         ;;
3095         g3|75*|ppc75*|powerpc75*)
3096             cpuflags="-mcpu=750"
3097             disable altivec
3098         ;;
3099         g4|745*|ppc745*|powerpc745*)
3100             cpuflags="-mcpu=7450"
3101         ;;
3102         74*|ppc74*|powerpc74*)
3103             cpuflags="-mcpu=7400"
3104         ;;
3105         g5|970|ppc970|powerpc970)
3106             cpuflags="-mcpu=970"
3107         ;;
3108         power[3-7]*)
3109             cpuflags="-mcpu=$cpu"
3110         ;;
3111         cell)
3112             cpuflags="-mcpu=cell"
3113             enable ldbrx
3114         ;;
3115         e500mc)
3116             cpuflags="-mcpu=e500mc"
3117             disable altivec
3118         ;;
3119         e500v2)
3120             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3121             disable altivec
3122         ;;
3123         e500)
3124             cpuflags="-mcpu=8540 -mhard-float"
3125             disable altivec
3126         ;;
3127     esac
3128
3129 elif enabled sparc; then
3130
3131     case $cpu in
3132         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3133             cpuflags="-mcpu=$cpu"
3134             disable vis
3135         ;;
3136         ultrasparc*|niagara[234])
3137             cpuflags="-mcpu=$cpu"
3138         ;;
3139     esac
3140
3141 elif enabled x86; then
3142
3143     case $cpu in
3144         i[345]86|pentium)
3145             cpuflags="-march=$cpu"
3146             disable mmx
3147         ;;
3148         # targets that do NOT support nopl and conditional mov (cmov)
3149         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3150             cpuflags="-march=$cpu"
3151             disable i686
3152         ;;
3153         # targets that do support nopl and conditional mov (cmov)
3154         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3155             cpuflags="-march=$cpu"
3156             enable i686
3157             enable fast_cmov
3158         ;;
3159         # targets that do support conditional mov but on which it's slow
3160         pentium4|pentium4m|prescott|nocona)
3161             cpuflags="-march=$cpu"
3162             enable i686
3163             disable fast_cmov
3164         ;;
3165     esac
3166
3167 fi
3168
3169 if [ "$cpu" != generic ]; then
3170     add_cflags  $cpuflags
3171     add_asflags $cpuflags
3172 fi
3173
3174 # compiler sanity check
3175 check_exec <<EOF
3176 int main(void){ return 0; }
3177 EOF
3178 if test "$?" != 0; then
3179     echo "$cc is unable to create an executable file."
3180     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3181         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3182         echo "Only do this if you know what cross compiling means."
3183     fi
3184     die "C compiler test failed."
3185 fi
3186
3187 add_cppflags -D_ISOC99_SOURCE
3188 check_cflags -std=c99
3189 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3190 #include <stdlib.h>
3191 EOF
3192 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3193 #include <stdlib.h>
3194 EOF
3195
3196 add_host_cppflags -D_ISOC99_SOURCE
3197 check_host_cflags -std=c99
3198 check_host_cflags -Wall
3199 check_host_cflags -O3
3200
3201 check_64bit(){
3202     arch32=$1
3203     arch64=$2
3204     expr=$3
3205     check_code cc "" "int test[2*($expr) - 1]" &&
3206         subarch=$arch64 || subarch=$arch32
3207 }
3208
3209 case "$arch" in
3210     aarch64|alpha|ia64)
3211         spic=$shared
3212     ;;
3213     mips)
3214         check_64bit mips mips64 '_MIPS_SIM > 1'
3215         spic=$shared
3216     ;;
3217     parisc)
3218         check_64bit parisc parisc64 'sizeof(void *) > 4'
3219         spic=$shared
3220     ;;
3221     ppc)
3222         check_64bit ppc ppc64 'sizeof(void *) > 4'
3223         spic=$shared
3224     ;;
3225     sparc)
3226         check_64bit sparc sparc64 'sizeof(void *) > 4'
3227         spic=$shared
3228     ;;
3229     x86)
3230         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3231         if test "$subarch" = "x86_64"; then
3232             spic=$shared
3233         fi
3234     ;;
3235 esac
3236
3237 enable $subarch
3238 enabled spic && enable_weak pic
3239
3240 # OS specific
3241 case $target_os in
3242     aix)
3243         SHFLAGS=-shared
3244         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3245         enabled shared && add_ldflags -Wl,-brtl
3246         ;;
3247     haiku)
3248         prefix_default="/boot/common"
3249         network_extralibs="-lnetwork"
3250         host_libs=
3251         ;;
3252     sunos)
3253         SHFLAGS='-shared -Wl,-h,$$(@F)'
3254         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3255         network_extralibs="-lsocket -lnsl"
3256         # When using suncc to build, the Solaris linker will mark
3257         # an executable with each instruction set encountered by
3258         # the Solaris assembler.  As our libraries contain their own
3259         # guards for processor-specific code, instead suppress
3260         # generation of the HWCAPS ELF section on Solaris x86 only.
3261         enabled_all suncc x86 &&
3262             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3263             add_ldflags -Wl,-M,mapfile
3264         nm_default='nm -P -g'
3265         ;;
3266     netbsd)
3267         disable symver
3268         oss_indev_extralibs="-lossaudio"
3269         oss_outdev_extralibs="-lossaudio"
3270         ;;
3271     openbsd|bitrig)
3272         disable symver
3273         SHFLAGS='-shared'
3274         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3275         SLIB_INSTALL_LINKS=
3276         oss_indev_extralibs="-lossaudio"
3277         oss_outdev_extralibs="-lossaudio"
3278         ;;
3279     dragonfly)
3280         disable symver
3281         ;;
3282     freebsd)
3283         ;;
3284     bsd/os)
3285         add_extralibs -lpoll -lgnugetopt
3286         ;;
3287     darwin)
3288         gas="gas-preprocessor.pl $cc"
3289         enabled ppc && add_asflags -force_cpusubtype_ALL
3290         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3291         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3292         add_ldflags -Wl,-dynamic,-search_paths_first
3293         SLIBSUF=".dylib"
3294         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3295         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3296         objformat="macho"
3297         enabled x86_64 && objformat="macho64"
3298         enabled_any pic shared ||
3299             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3300         ;;
3301     mingw32*)
3302         if test $target_os = "mingw32ce"; then
3303             disable network
3304         else
3305             target_os=mingw32
3306         fi
3307         LIBTARGET=i386
3308         if enabled x86_64; then
3309             LIBTARGET="i386:x86-64"
3310         elif enabled arm; then
3311             LIBTARGET=arm-wince
3312         fi
3313         check_ldflags -Wl,--nxcompat
3314         check_ldflags -Wl,--dynamicbase
3315         shlibdir_default="$bindir_default"
3316         SLIBPREF=""
3317         SLIBSUF=".dll"
3318         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3319         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3320         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3321         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3322         SLIB_INSTALL_LINKS=
3323         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3324         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3325         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3326         objformat="win32"
3327         dlltool="${cross_prefix}dlltool"
3328         ranlib=:
3329         enable dos_paths
3330         ;;
3331     win32|win64)
3332         disable symver
3333         if enabled shared; then
3334             # Link to the import library instead of the normal static library
3335             # for shared libs.
3336             LD_LIB='%.lib'
3337             # Cannot build both shared and static libs with MSVC or icl.
3338             disable static
3339         fi
3340         shlibdir_default="$bindir_default"
3341         SLIBPREF=""
3342         SLIBSUF=".dll"
3343         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3344         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3345         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3346         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3347         SLIB_INSTALL_LINKS=
3348         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3349         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3350         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3351         objformat="win32"
3352         ranlib=:
3353         enable dos_paths
3354         ;;
3355     cygwin*)
3356         target_os=cygwin
3357         shlibdir_default="$bindir_default"
3358         SLIBPREF="cyg"
3359         SLIBSUF=".dll"
3360         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3361         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3362         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3363         SLIB_INSTALL_LINKS=
3364         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3365         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3366         objformat="win32"
3367         enable dos_paths
3368         ;;
3369     *-dos|freedos|opendos)
3370         network_extralibs="-lsocket"
3371         objformat="coff"
3372         enable dos_paths
3373         add_cppflags -U__STRICT_ANSI__
3374         ;;
3375     linux)
3376         enable dv1394
3377         ;;
3378     irix*)
3379         target_os=irix
3380         ranlib="echo ignoring ranlib"
3381         ;;
3382     os/2*)
3383         ln_s="cp -f"
3384         objformat="aout"
3385         add_cppflags -D_GNU_SOURCE
3386         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3387         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3388         LIBSUF="_s.a"
3389         SLIBPREF=""
3390         SLIBSUF=".dll"
3391         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3392         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3393         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3394             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3395             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3396             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3397             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3398             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3399         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3400             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3401         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3402         enable dos_paths
3403         ;;
3404     gnu/kfreebsd)
3405         add_cppflags -D_BSD_SOURCE
3406         ;;
3407     gnu)
3408         ;;
3409     qnx)
3410         add_cppflags -D_QNX_SOURCE
3411         network_extralibs="-lsocket"
3412         ;;
3413     symbian)
3414         SLIBSUF=".dll"
3415         enable dos_paths
3416         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3417         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3418         add_ldflags -Wl,--target1-abs,--no-undefined \
3419                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3420                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3421         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3422                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3423                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3424         ;;
3425     osf1)
3426         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3427         ;;
3428     minix)
3429         ;;
3430     plan9)
3431         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3432                      -D_REENTRANT_SOURCE        \
3433                      -D_RESEARCH_SOURCE         \
3434                      -DFD_SETSIZE=96            \
3435                      -DHAVE_SOCK_OPTS
3436         add_compat strtod.o strtod=avpriv_strtod
3437         network_extralibs='-lbsd'
3438         exeobjs=compat/plan9/main.o
3439         disable avserver
3440         cp_f='cp'
3441         ;;
3442     none)
3443         ;;
3444     *)
3445         die "Unknown OS '$target_os'."
3446         ;;
3447 esac
3448
3449 # determine libc flavour
3450
3451 probe_libc(){
3452     pfx=$1
3453     pfx_no_=${pfx%_}
3454     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3455     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3456         eval ${pfx}libc_type=uclibc
3457         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3458     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3459         eval ${pfx}libc_type=glibc
3460         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3461     # MinGW headers can be installed on Cygwin, so check for newlib first.
3462     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3463         eval ${pfx}libc_type=newlib
3464         add_${pfx}cppflags -U__STRICT_ANSI__
3465     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3466     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3467         eval ${pfx}libc_type=mingw64
3468         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3469         eval test \$${pfx_no_}cc_type = "gcc" &&
3470             add_${pfx}cppflags -D__printf__=__gnu_printf__
3471     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3472          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3473         eval ${pfx}libc_type=mingw32
3474         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3475             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3476             die "ERROR: MinGW32 runtime version must be >= 3.15."
3477         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3478         eval test \$${pfx_no_}cc_type = "gcc" &&
3479             add_${pfx}cppflags -D__printf__=__gnu_printf__
3480     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3481         eval ${pfx}libc_type=msvcrt
3482         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3483         # 0x601 by default unless something else is set by the user.
3484         # This can easily lead to us detecting functions only present
3485         # in such new versions and producing binaries requiring windows 7.0.
3486         # Therefore explicitly set the default to XP unless the user has
3487         # set something else on the command line.
3488         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3489             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3490     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3491         eval ${pfx}libc_type=klibc
3492     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3493         eval ${pfx}libc_type=bionic
3494     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3495         eval ${pfx}libc_type=solaris
3496         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3497     fi
3498 }
3499
3500 probe_libc
3501 test -n "$libc_type" && enable libc_$libc_type
3502 probe_libc host_
3503 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3504
3505 case $libc_type in
3506     bionic)
3507         add_compat strtod.o strtod=avpriv_strtod
3508         ;;
3509     msvcrt)
3510         add_compat strtod.o strtod=avpriv_strtod
3511         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3512                                      _snprintf=avpriv_snprintf  \
3513                                      vsnprintf=avpriv_vsnprintf
3514         ;;
3515 esac
3516
3517 # hacks for compiler/libc/os combinations
3518
3519 if enabled_all tms470 libc_glibc; then
3520     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3521     add_cppflags -D__USER_LABEL_PREFIX__=
3522     add_cppflags -D__builtin_memset=memset
3523     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3524     add_cflags   -pds=48    # incompatible redefinition of macro
3525 fi
3526
3527 if enabled_all ccc libc_glibc; then
3528     add_ldflags -Wl,-z,now  # calls to libots crash without this
3529 fi
3530
3531 esc(){
3532     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3533 }
3534
3535 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3536
3537 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3538
3539 set_default $PATHS_LIST
3540 set_default nm
3541
3542 # we need to build at least one lib type
3543 if ! enabled_any static shared; then
3544     cat <<EOF
3545 At least one library type must be built.
3546 Specify --enable-static to build the static libraries or --enable-shared to
3547 build the shared libraries as well. To only build the shared libraries specify
3548 --disable-static in addition to --enable-shared.
3549 EOF
3550     exit 1;
3551 fi
3552
3553 die_license_disabled() {
3554     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3555 }
3556
3557 die_license_disabled gpl libcdio
3558 die_license_disabled gpl libx264
3559 die_license_disabled gpl libx265
3560 die_license_disabled gpl libxavs
3561 die_license_disabled gpl libxvid
3562 die_license_disabled gpl x11grab
3563
3564 die_license_disabled nonfree libfaac
3565 die_license_disabled nonfree libfdk_aac
3566 die_license_disabled nonfree openssl
3567
3568 die_license_disabled version3 libopencore_amrnb
3569 die_license_disabled version3 libopencore_amrwb
3570 die_license_disabled version3 libvo_aacenc
3571 die_license_disabled version3 libvo_amrwbenc
3572
3573 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3574
3575 disabled optimizations || check_cflags -fomit-frame-pointer
3576
3577 enable_weak_pic() {
3578     disabled pic && return
3579     enable pic
3580     add_cppflags -DPIC
3581     case "$target_os" in
3582     mingw*|cygwin*)
3583         ;;
3584     *)
3585         add_cflags -fPIC
3586         ;;
3587     esac
3588     add_asflags  -fPIC
3589 }
3590
3591 enabled pic && enable_weak_pic
3592
3593 check_cc <<EOF || die "Symbol mangling check failed."
3594 int ff_extern;
3595 EOF
3596 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3597 extern_prefix=${sym%%ff_extern*}
3598
3599 check_cc <<EOF && enable_weak inline_asm
3600 void foo(void) { __asm__ volatile ("" ::); }
3601 EOF
3602
3603 _restrict=
3604 for restrict_keyword in restrict __restrict__ __restrict; do
3605     check_cc <<EOF && _restrict=$restrict_keyword && break
3606 void foo(char * $restrict_keyword p);
3607 EOF
3608 done
3609
3610 check_cc <<EOF && enable pragma_deprecated
3611 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3612 EOF
3613
3614 check_cc <<EOF && enable attribute_packed
3615 struct { int x; } __attribute__((packed)) x;
3616 EOF
3617
3618 check_cc <<EOF && enable attribute_may_alias
3619 union { int x; } __attribute__((may_alias)) x;
3620 EOF
3621
3622 check_cc <<EOF || die "endian test failed"
3623 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3624 EOF
3625 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3626
3627 check_inline_asm inline_asm_labels '"1:\n"'
3628
3629 if enabled aarch64; then
3630     # internal assembler in clang 3.3 does not support this instruction
3631     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3632     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3633
3634     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3635
3636 elif enabled alpha; then
3637
3638     check_cflags -mieee
3639
3640 elif enabled arm; then
3641
3642     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3643     enabled thumb && check_cflags -mthumb || check_cflags -marm
3644     nogas=die
3645
3646     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3647         enable vfp_args
3648     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3649         case "${cross_prefix:-$cc}" in
3650             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3651             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3652 __asm__ (".eabi_attribute 28, 1");
3653 int main(void) { return 0; }
3654 EOF
3655         esac
3656         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3657     fi
3658
3659     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3660     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3661     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3662     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3663     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3664     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3665
3666     [ $target_os = linux ] ||
3667         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3668             $ARCH_EXT_LIST_ARM
3669
3670     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3671
3672     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3673
3674 elif enabled mips; then
3675
3676     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3677
3678 elif enabled parisc; then
3679
3680     if enabled gcc; then
3681         case $($cc -dumpversion) in
3682             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3683         esac
3684     fi
3685
3686 elif enabled ppc; then
3687
3688     enable local_aligned_8 local_aligned_16
3689
3690     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3691     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3692     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3693     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3694
3695     # AltiVec flags: The FSF version of GCC differs from the Apple version
3696     if enabled altivec; then
3697         nogas=warn
3698         check_cflags -maltivec -mabi=altivec &&
3699         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3700         check_cflags -faltivec
3701
3702         # check if our compiler supports Motorola AltiVec C API
3703         check_cc <<EOF || disable altivec
3704 $inc_altivec_h
3705 int main(void) {
3706     vector signed int v1 = (vector signed int) { 0 };
3707     vector signed int v2 = (vector signed int) { 1 };
3708     v1 = vec_add(v1, v2);
3709     return 0;
3710 }
3711 EOF
3712
3713         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3714     fi
3715
3716 elif enabled sparc; then
3717
3718     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3719
3720 elif enabled x86; then
3721
3722     check_builtin rdtsc    intrin.h   "__rdtsc()"
3723     check_builtin mm_empty mmintrin.h "_mm_empty()"
3724
3725     enable local_aligned_8 local_aligned_16
3726
3727     # check whether EBP is available on x86
3728     # As 'i' is stored on the stack, this program will crash
3729     # if the base pointer is used to access it because the
3730     # base pointer is cleared in the inline assembly code.
3731     check_exec_crash <<EOF && enable ebp_available
3732 volatile int i=0;
3733 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3734 return i;
3735 EOF
3736
3737     # check whether EBX is available on x86
3738     check_inline_asm ebx_available '""::"b"(0)' &&
3739         check_inline_asm ebx_available '"":::"%ebx"'
3740
3741     # check whether xmm clobbers are supported
3742     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3743
3744     # check whether binutils is new enough to compile SSSE3/MMXEXT
3745     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3746     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3747
3748     if ! disabled_any asm mmx yasm; then
3749         if check_cmd $yasmexe --version; then
3750             enabled x86_64 && yasm_extra="-m amd64"
3751             yasm_debug="-g dwarf2"
3752         elif check_cmd nasm -v; then
3753             yasmexe=nasm
3754             yasm_debug="-g -F dwarf"
3755             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3756         fi
3757
3758         YASMFLAGS="-f $objformat $yasm_extra"
3759         enabled pic               && append YASMFLAGS "-DPIC"
3760         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3761         case "$objformat" in
3762             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3763         esac
3764
3765         check_yasm "movbe ecx, [5]" && enable yasm ||
3766             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3767         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3768         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3769         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3770         check_yasm "CPU amdnop" || disable cpunop
3771     fi
3772
3773     case "$cpu" in
3774         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3775             disable fast_clz
3776         ;;
3777     esac
3778
3779 fi
3780
3781 if enabled asm; then
3782     as=${gas:=$as}
3783     check_as <<EOF && enable gnu_as || \
3784         $nogas "GNU assembler not found, install gas-preprocessor"
3785 .macro m n
3786 \n: .int 0
3787 .endm
3788 m x
3789 EOF
3790 fi
3791
3792 check_ldflags -Wl,--as-needed
3793
3794 if check_func dlopen; then
3795     ldl=
3796 elif check_func dlopen -ldl; then
3797     ldl=-ldl
3798 fi
3799
3800 if ! disabled network; then
3801     check_type "sys/types.h sys/socket.h" socklen_t
3802     check_type netdb.h "struct addrinfo"
3803     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3804     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3805     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3806     check_type netinet/in.h "struct sockaddr_in6"
3807     check_type poll.h "struct pollfd"
3808     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3809     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3810     check_type netinet/sctp.h "struct sctp_event_subscribe"
3811     check_func getaddrinfo $network_extralibs
3812     check_func getservbyport $network_extralibs
3813     check_func inet_aton $network_extralibs
3814     # Prefer arpa/inet.h over winsock2
3815     if check_header arpa/inet.h ; then
3816         check_func closesocket
3817     elif check_header winsock2.h ; then
3818         check_func_headers winsock2.h closesocket -lws2 &&
3819             network_extralibs="-lws2" ||
3820         { check_func_headers winsock2.h closesocket -lws2_32 &&
3821             network_extralibs="-lws2_32"; } || disable winsock2_h network
3822         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3823         check_type ws2tcpip.h socklen_t
3824         check_type ws2tcpip.h "struct addrinfo"
3825         check_type ws2tcpip.h "struct group_source_req"
3826         check_type ws2tcpip.h "struct ip_mreq_source"
3827         check_type ws2tcpip.h "struct ipv6_mreq"
3828         check_type winsock2.h "struct pollfd"
3829         check_type ws2tcpip.h "struct sockaddr_in6"
3830         check_type ws2tcpip.h "struct sockaddr_storage"
3831         check_struct winsock2.h "struct sockaddr" sa_len
3832     else
3833         disable network
3834     fi
3835 fi
3836
3837 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3838 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3839
3840 check_func  fcntl
3841 check_func  fork
3842 check_func_headers stdlib.h getenv
3843 check_func  gethrtime
3844 check_func  getopt
3845 check_func  getrusage
3846 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3847 check_func  gettimeofday
3848 check_func  isatty
3849 check_func  localtime_r
3850 check_func  ${malloc_prefix}memalign            && enable memalign
3851 check_func  mkstemp
3852 check_func  mmap
3853 check_func  mprotect
3854 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3855 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3856 check_func  setrlimit
3857 check_func  strerror_r
3858 check_func  strptime
3859 check_func  strtok_r
3860 check_func  sched_getaffinity
3861 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3862 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3863 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3864 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3865 check_func  sysconf
3866 check_func  sysctl
3867 check_func  usleep
3868 check_func_headers io.h setmode
3869 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3870 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3871 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3872 check_func_headers windows.h GetProcessAffinityMask
3873 check_func_headers windows.h GetProcessTimes
3874 check_func_headers windows.h GetSystemTimeAsFileTime
3875 check_func_headers windows.h MapViewOfFile
3876 check_func_headers windows.h SetConsoleTextAttribute
3877 check_func_headers windows.h Sleep
3878 check_func_headers windows.h VirtualAlloc
3879
3880 check_header direct.h
3881 check_header dlfcn.h
3882 check_header dxva.h
3883 check_header dxva2api.h
3884 check_header io.h
3885 check_header malloc.h
3886 check_header poll.h
3887 check_header sys/mman.h
3888 check_header sys/param.h
3889 check_header sys/resource.h
3890 check_header sys/select.h
3891 check_header sys/time.h
3892 check_header sys/un.h
3893 check_header unistd.h
3894 check_header vdpau/vdpau.h
3895 check_header vdpau/vdpau_x11.h
3896 check_header VideoDecodeAcceleration/VDADecoder.h
3897 check_header windows.h
3898 check_header X11/extensions/XvMClib.h
3899
3900 if ! disabled w32threads && ! enabled pthreads; then
3901     check_func_headers "windows.h process.h" _beginthreadex &&
3902         enable w32threads || disable w32threads
3903 fi
3904
3905 # check for some common methods of building with pthread support
3906 # do this before the optional library checks as some of them require pthreads
3907 if ! disabled pthreads && ! enabled w32threads; then
3908     enable pthreads
3909     if check_func pthread_join -pthread; then
3910         add_cflags -pthread
3911         add_extralibs -pthread
3912     elif check_func pthread_join -pthreads; then
3913         add_cflags -pthreads
3914         add_extralibs -pthreads
3915     elif check_func pthread_join -lpthreadGC2; then
3916         add_extralibs -lpthreadGC2
3917     elif check_lib pthread.h pthread_join -lpthread; then
3918         :
3919     elif ! check_func pthread_join; then
3920         disable pthreads
3921     fi
3922 fi
3923
3924 for thread in $THREADS_LIST; do
3925     if enabled $thread; then
3926         test -n "$thread_type" &&
3927             die "ERROR: Only one thread type must be selected." ||
3928             thread_type="$thread"
3929     fi
3930 done
3931
3932 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3933 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3934
3935 check_lib math.h sin -lm && LIBM="-lm"
3936 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3937
3938 atan2f_args=2
3939 ldexpf_args=2
3940 powf_args=2
3941
3942 for func in $MATH_FUNCS; do
3943     eval check_mathfunc $func \${${func}_args:-1}
3944 done
3945
3946 # these are off by default, so fail if requested and not available
3947 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3948                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3949                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3950 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3951 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3952 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3953 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3954 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3955 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3956                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3957                                done || die "ERROR: libgsm not found"; }
3958 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3959 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3960 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3961 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3962 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3963 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3964 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3965 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3966 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3967 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3968 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3969 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3970 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3971 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3972 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3973 enabled libvpx            && {
3974     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3975                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3976     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3977                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3978     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3979     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3980 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3981 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3982 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3983                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3984                                die "ERROR: libx264 version must be >= 0.118."; }
3985 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
3986                              { check_cpp_condition x265.h "X265_BUILD >= 7" ||
3987                                die "ERROR: libx265 version must be >= 7."; }
3988 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3989 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3990 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3991                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3992                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3993                                die "ERROR: openssl not found"; }
3994
3995 if enabled gnutls; then
3996     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3997     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3998 fi
3999
4000 # libdc1394 check
4001 if enabled libdc1394; then
4002     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4003         enable libdc1394_2; } ||
4004     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4005         enable libdc1394_1; } ||
4006     die "ERROR: No version of libdc1394 found "
4007 fi
4008
4009 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4010     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4011     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4012     enable sdl
4013 fi
4014
4015 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4016 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4017
4018 check_header linux/fb.h
4019 check_header linux/videodev2.h
4020 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4021
4022 check_header sys/videoio.h
4023
4024 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4025 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4026 # w32api 3.12 had it defined wrong
4027 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4028
4029 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4030 { check_header dev/bktr/ioctl_meteor.h &&
4031   check_header dev/bktr/ioctl_bt848.h; } ||
4032 { check_header machine/ioctl_meteor.h &&
4033   check_header machine/ioctl_bt848.h; } ||
4034 { check_header dev/video/meteor/ioctl_meteor.h &&
4035   check_header dev/video/bktr/ioctl_bt848.h; } ||
4036 check_header dev/ic/bt8xx.h
4037
4038 check_header sndio.h
4039 check_header sys/soundcard.h
4040 check_header soundcard.h
4041
4042 enabled_any alsa_indev alsa_outdev &&
4043     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4044
4045 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4046     check_func jack_port_get_latency_range -ljack
4047
4048 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4049
4050 if enabled libcdio; then
4051     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4052     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4053 fi
4054
4055 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4056
4057 enabled x11grab                                           &&
4058 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4059 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4060 { enabled xlib || die "ERROR: Xlib not found"; }
4061
4062 enabled vdpau &&
4063     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4064     disable vdpau
4065
4066 enabled vdpau && enabled xlib &&
4067     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4068     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4069     enable vdpau_x11
4070
4071 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4072
4073 # add some useful compiler flags if supported
4074 check_cflags -Wdeclaration-after-statement
4075 check_cflags -Wall
4076 check_cflags -Wdisabled-optimization
4077 check_cflags -Wpointer-arith
4078 check_cflags -Wredundant-decls
4079 check_cflags -Wcast-qual
4080 check_cflags -Wwrite-strings
4081 check_cflags -Wtype-limits
4082 check_cflags -Wundef
4083 check_cflags -Wmissing-prototypes
4084 check_cflags -Wstrict-prototypes
4085 enabled extra_warnings && check_cflags -Winline
4086
4087 check_disable_warning(){
4088     warning_flag=-W${1#-Wno-}
4089     test_cflags $warning_flag && add_cflags $1
4090 }
4091
4092 check_disable_warning -Wno-parentheses
4093 check_disable_warning -Wno-switch
4094 check_disable_warning -Wno-format-zero-length
4095 check_disable_warning -Wno-pointer-sign
4096
4097 # add some linker flags
4098 check_ldflags -Wl,--warn-common
4099 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4100 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4101
4102 # add some strip flags
4103 # -wN '..@*' is more selective than -x, but not available everywhere.
4104 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4105
4106 enabled neon_clobber_test &&
4107     check_ldflags -Wl,--wrap,avcodec_open2              \
4108                   -Wl,--wrap,avcodec_decode_audio4      \
4109                   -Wl,--wrap,avcodec_decode_video2      \
4110                   -Wl,--wrap,avcodec_decode_subtitle2   \
4111                   -Wl,--wrap,avcodec_encode_audio2      \
4112                   -Wl,--wrap,avcodec_encode_video2      \
4113                   -Wl,--wrap,avcodec_encode_subtitle    \
4114                   -Wl,--wrap,avresample_convert ||
4115     disable neon_clobber_test
4116
4117 enabled xmm_clobber_test &&
4118     check_ldflags -Wl,--wrap,avcodec_open2              \
4119                   -Wl,--wrap,avcodec_decode_audio4      \
4120                   -Wl,--wrap,avcodec_decode_video2      \
4121                   -Wl,--wrap,avcodec_decode_subtitle2   \
4122                   -Wl,--wrap,avcodec_encode_audio2      \
4123                   -Wl,--wrap,avcodec_encode_video2      \
4124                   -Wl,--wrap,avcodec_encode_subtitle    \
4125                   -Wl,--wrap,avresample_convert         \
4126                   -Wl,--wrap,sws_scale ||
4127     disable xmm_clobber_test
4128
4129 echo "X{};" > $TMPV
4130 if test_ldflags -Wl,--version-script,$TMPV; then
4131     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4132     check_cc <<EOF && enable symver_asm_label
4133 void ff_foo(void) __asm__ ("av_foo@VERSION");
4134 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4135 EOF
4136     check_cc <<EOF && enable symver_gnu_asm
4137 __asm__(".symver ff_foo,av_foo@VERSION");
4138 void ff_foo(void) {}
4139 EOF
4140 fi
4141
4142 if [ -z "$optflags" ]; then
4143     if enabled small; then
4144         optflags=$cflags_size
4145     elif enabled optimizations; then
4146         optflags=$cflags_speed
4147     else
4148         optflags=$cflags_noopt
4149     fi
4150 fi
4151
4152 check_optflags(){
4153     check_cflags "$@"
4154     enabled lto && check_ldflags "$@"
4155 }
4156
4157
4158 if enabled lto; then
4159     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4160     check_cflags  -flto
4161     check_ldflags -flto $cpuflags
4162 fi
4163
4164 check_optflags $optflags
4165 check_optflags -fno-math-errno
4166 check_optflags -fno-signed-zeros
4167
4168 if enabled icc; then
4169     # Just warnings, no remarks
4170     check_cflags -w1
4171     # -wd: Disable following warnings
4172     # 144, 167, 556: -Wno-pointer-sign
4173     # 1292: attribute "foo" ignored
4174     # 1419: external declaration in primary source file
4175     # 10006: ignoring unknown option -fno-signed-zeros
4176     # 10148: ignoring unknown option -Wno-parentheses
4177     # 10156: ignoring option '-W'; no argument required
4178     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4179     # 11030: Warning unknown option --as-needed
4180     # 10156: ignoring option '-export'; no argument required
4181     check_ldflags -wd10156,11030
4182     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4183     enable ebp_available
4184     if enabled x86_32; then
4185         icc_version=$($cc -dumpversion)
4186         test ${icc_version%%.*} -ge 11 &&
4187             check_cflags -falign-stack=maintain-16-byte ||
4188             disable aligned_stack
4189     fi
4190 elif enabled ccc; then
4191     # disable some annoying warnings
4192     add_cflags -msg_disable bitnotint
4193     add_cflags -msg_disable mixfuncvoid
4194     add_cflags -msg_disable nonstandcast
4195     add_cflags -msg_disable unsupieee
4196 elif enabled gcc; then
4197     check_optflags -fno-tree-vectorize
4198     check_cflags -Werror=implicit-function-declaration
4199     check_cflags -Werror=missing-prototypes
4200     check_cflags -Werror=return-type
4201     check_cflags -Werror=declaration-after-statement
4202     check_cflags -Werror=vla
4203     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4204 elif enabled llvm_gcc; then
4205     check_cflags -mllvm -stack-alignment=16
4206 elif enabled clang; then
4207     check_cflags -mllvm -stack-alignment=16
4208     check_cflags -Qunused-arguments
4209     check_cflags -Werror=implicit-function-declaration
4210     check_cflags -Werror=missing-prototypes
4211     check_cflags -Werror=return-type
4212 elif enabled cparser; then
4213     add_cflags -Wno-missing-variable-declarations
4214     add_cflags -Wno-empty-statement
4215 elif enabled armcc; then
4216     # 2523: use of inline assembler is deprecated
4217     add_cflags -W${armcc_opt},--diag_suppress=2523
4218     add_cflags -W${armcc_opt},--diag_suppress=1207
4219     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4220     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4221     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4222     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4223 elif enabled tms470; then
4224     add_cflags -pds=824 -pds=837
4225     disable inline_asm
4226 elif enabled pathscale; then
4227     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4228 elif enabled_any msvc icl; then
4229     enabled x86_32 && disable aligned_stack
4230     enabled_all x86_32 debug && add_cflags -Oy-
4231     enabled debug && add_ldflags -debug
4232     enable pragma_deprecated
4233     if enabled icl; then
4234         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4235         # (correctly) on icl 13.x.
4236         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4237             add_cflags -Qansi-alias
4238         # icl will pass the inline asm tests but inline asm is currently
4239         # not supported (build will fail)
4240         disable inline_asm
4241     fi
4242 fi
4243
4244 case $as_type in
4245     clang)
4246         add_asflags -Qunused-arguments
4247     ;;
4248 esac
4249
4250 case $ld_type in
4251     clang)
4252         check_ldflags -Qunused-arguments
4253     ;;
4254 esac
4255
4256 case $target_os in
4257     osf1)
4258         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4259     ;;
4260     plan9)
4261         add_cppflags -Dmain=plan9_main
4262     ;;
4263 esac
4264
4265 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4266
4267 check_deps $CONFIG_LIST       \
4268            $CONFIG_EXTRA      \
4269            $HAVE_LIST         \
4270            $ALL_COMPONENTS    \
4271
4272 ! enabled_any memalign posix_memalign aligned_malloc &&
4273     enabled_any $need_memalign && enable memalign_hack
4274
4275 echo "install prefix            $prefix"
4276 echo "source path               $source_path"
4277 echo "C compiler                $cc"
4278 echo "C library                 $libc_type"
4279 if test "$host_cc" != "$cc"; then
4280     echo "host C compiler           $host_cc"
4281     echo "host C library            $host_libc_type"
4282 fi
4283 echo "ARCH                      $arch ($cpu)"
4284 if test "$build_suffix" != ""; then
4285     echo "build suffix              $build_suffix"
4286 fi
4287 if test "$extra_version" != ""; then
4288     echo "version string suffix     $extra_version"
4289 fi
4290 echo "big-endian                ${bigendian-no}"
4291 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4292 if enabled x86; then
4293     echo "${yasmexe}                      ${yasm-no}"
4294     echo "MMX enabled               ${mmx-no}"
4295     echo "MMXEXT enabled            ${mmxext-no}"
4296     echo "3DNow! enabled            ${amd3dnow-no}"
4297     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4298     echo "SSE enabled               ${sse-no}"
4299     echo "SSSE3 enabled             ${ssse3-no}"
4300     echo "AVX enabled               ${avx-no}"
4301     echo "XOP enabled               ${xop-no}"
4302     echo "FMA3 enabled              ${fma3-no}"
4303     echo "FMA4 enabled              ${fma4-no}"
4304     echo "i686 features enabled     ${i686-no}"
4305     echo "CMOV is fast              ${fast_cmov-no}"
4306     echo "EBX available             ${ebx_available-no}"
4307     echo "EBP available             ${ebp_available-no}"
4308 fi
4309 if enabled aarch64; then
4310     echo "NEON enabled              ${neon-no}"
4311     echo "VFP enabled               ${vfp-no}"
4312 fi
4313 if enabled arm; then
4314     echo "ARMv5TE enabled           ${armv5te-no}"
4315     echo "ARMv6 enabled             ${armv6-no}"
4316     echo "ARMv6T2 enabled           ${armv6t2-no}"
4317     echo "VFP enabled               ${vfp-no}"
4318     echo "NEON enabled              ${neon-no}"
4319 fi
4320 if enabled ppc; then
4321     echo "AltiVec enabled           ${altivec-no}"
4322     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4323     echo "dcbzl available           ${dcbzl-no}"
4324 fi
4325 if enabled sparc; then
4326     echo "VIS enabled               ${vis-no}"
4327 fi
4328 echo "debug symbols             ${debug-no}"
4329 echo "optimize for size         ${small-no}"
4330 echo "optimizations             ${optimizations-no}"
4331 echo "static                    ${static-no}"
4332 echo "shared                    ${shared-no}"
4333 echo "new filter support        ${avfilter-no}"
4334 echo "network support           ${network-no}"
4335 echo "threading support         ${thread_type-no}"
4336 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4337 echo "SDL support               ${sdl-no}"
4338 test -n "$random_seed" &&
4339     echo "random seed               ${random_seed}"
4340 echo
4341
4342 echo "External libraries:"
4343 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4344 echo
4345
4346 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4347     echo "Enabled ${type}s:"
4348     eval list=\$$(toupper $type)_LIST
4349     print_enabled '_*' $list | print_3_columns
4350     echo
4351 done
4352
4353 license="LGPL version 2.1 or later"
4354 if enabled nonfree; then
4355     license="nonfree and unredistributable"
4356 elif enabled gplv3; then
4357     license="GPL version 3 or later"
4358 elif enabled lgplv3; then
4359     license="LGPL version 3 or later"
4360 elif enabled gpl; then
4361     license="GPL version 2 or later"
4362 fi
4363
4364 echo "License: $license"
4365
4366 echo "Creating config.mak and config.h..."
4367
4368 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4369
4370 config_files="$TMPH config.mak"
4371
4372 cat > config.mak <<EOF
4373 # Automatically generated by configure - do not modify!
4374 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4375 prefix=$prefix
4376 LIBDIR=\$(DESTDIR)$libdir
4377 SHLIBDIR=\$(DESTDIR)$shlibdir
4378 INCDIR=\$(DESTDIR)$incdir
4379 BINDIR=\$(DESTDIR)$bindir
4380 DATADIR=\$(DESTDIR)$datadir
4381 DOCDIR=\$(DESTDIR)$docdir
4382 MANDIR=\$(DESTDIR)$mandir
4383 SRC_PATH=$source_path
4384 CC_IDENT=$cc_ident
4385 ARCH=$arch
4386 CC=$cc
4387 AS=$as
4388 LD=$ld
4389 DEPCC=$dep_cc
4390 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4391 DEPAS=$as
4392 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4393 YASM=$yasmexe
4394 DEPYASM=$yasmexe
4395 AR=$ar
4396 ARFLAGS=$arflags
4397 AR_O=$ar_o
4398 RANLIB=$ranlib
4399 STRIP=$strip
4400 LN_S=$ln_s
4401 CPPFLAGS=$CPPFLAGS
4402 CFLAGS=$CFLAGS
4403 ASFLAGS=$ASFLAGS
4404 AS_C=$AS_C
4405 AS_O=$AS_O
4406 CC_C=$CC_C
4407 CC_E=$CC_E
4408 CC_O=$CC_O
4409 LD_O=$LD_O
4410 LD_LIB=$LD_LIB
4411 LD_PATH=$LD_PATH
4412 DLLTOOL=$dlltool
4413 LDFLAGS=$LDFLAGS
4414 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4415 STRIPFLAGS=$STRIPFLAGS
4416 YASMFLAGS=$YASMFLAGS
4417 BUILDSUF=$build_suffix
4418 FULLNAME=$FULLNAME
4419 LIBPREF=$LIBPREF
4420 LIBSUF=$LIBSUF
4421 LIBNAME=$LIBNAME
4422 SLIBPREF=$SLIBPREF
4423 SLIBSUF=$SLIBSUF
4424 EXESUF=$EXESUF
4425 EXTRA_VERSION=$extra_version
4426 CCDEP=$CCDEP
4427 CCDEP_FLAGS=$CCDEP_FLAGS
4428 ASDEP=$ASDEP
4429 ASDEP_FLAGS=$ASDEP_FLAGS
4430 CC_DEPFLAGS=$CC_DEPFLAGS
4431 AS_DEPFLAGS=$AS_DEPFLAGS
4432 HOSTCC=$host_cc
4433 HOSTLD=$host_ld
4434 HOSTCFLAGS=$host_cflags
4435 HOSTCPPFLAGS=$host_cppflags
4436 HOSTEXESUF=$HOSTEXESUF
4437 HOSTLDFLAGS=$host_ldflags
4438 HOSTLIBS=$host_libs
4439 DEPHOSTCC=$host_cc
4440 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4441 HOSTCCDEP=$HOSTCCDEP
4442 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4443 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4444 HOSTCC_C=$HOSTCC_C
4445 HOSTCC_O=$HOSTCC_O
4446 HOSTLD_O=$HOSTLD_O
4447 TARGET_EXEC=$target_exec $target_exec_args
4448 TARGET_PATH=$target_path
4449 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4450 CFLAGS-avplay=$sdl_cflags
4451 ZLIB=$($ldflags_filter -lz)
4452 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4453 EXTRALIBS=$extralibs
4454 COMPAT_OBJS=$compat_objs
4455 EXEOBJS=$exeobjs
4456 INSTALL=install
4457 LIBTARGET=${LIBTARGET}
4458 SLIBNAME=${SLIBNAME}
4459 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4460 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4461 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4462 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4463 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4464 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4465 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4466 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4467 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4468 EOF
4469
4470 get_version(){
4471     lcname=lib${1}
4472     name=$(toupper $lcname)
4473     file=$source_path/$lcname/version.h
4474     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4475     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4476     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4477     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4478     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4479 }
4480
4481 map 'get_version $v' $LIBRARY_LIST
4482
4483 print_program_libs(){
4484     eval "program_libs=\$${1}_libs"
4485     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4486 }
4487
4488 map 'print_program_libs $v' $PROGRAM_LIST
4489
4490 cat > $TMPH <<EOF
4491 /* Automatically generated by configure - do not modify! */
4492 #ifndef LIBAV_CONFIG_H
4493 #define LIBAV_CONFIG_H
4494 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4495 #define LIBAV_LICENSE "$(c_escape $license)"
4496 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4497 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4498 #define restrict $_restrict
4499 #define EXTERN_PREFIX "${extern_prefix}"
4500 #define EXTERN_ASM ${extern_prefix}
4501 #define SLIBSUF "$SLIBSUF"
4502 EOF
4503
4504 test -n "$malloc_prefix" &&
4505     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4506
4507 if enabled yasm; then
4508     append config_files $TMPASM
4509     printf '' >$TMPASM
4510 fi
4511
4512 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4513
4514 print_config ARCH_   "$config_files" $ARCH_LIST
4515 print_config HAVE_   "$config_files" $HAVE_LIST
4516 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4517                                      $CONFIG_EXTRA      \
4518                                      $ALL_COMPONENTS    \
4519
4520 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4521
4522 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4523 cp_if_changed $TMPH config.h
4524 touch .config
4525
4526 enabled yasm && cp_if_changed $TMPASM config.asm
4527
4528 cat > $TMPH <<EOF
4529 /* Generated by ffconf */
4530 #ifndef AVUTIL_AVCONFIG_H
4531 #define AVUTIL_AVCONFIG_H
4532 EOF
4533
4534 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4535
4536 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4537
4538 cp_if_changed $TMPH libavutil/avconfig.h
4539
4540 test -n "$WARNINGS" && printf "\n$WARNINGS"
4541
4542 # build pkg-config files
4543
4544 pkgconfig_generate(){
4545     name=$1
4546     shortname=${name#lib}${build_suffix}
4547     comment=$2
4548     version=$3
4549     libs=$4
4550     requires=$5
4551     enabled ${name#lib} || return 0
4552     mkdir -p $name
4553     cat <<EOF > $name/$name.pc
4554 prefix=$prefix
4555 exec_prefix=\${prefix}
4556 libdir=$libdir
4557 includedir=$incdir
4558
4559 Name: $name
4560 Description: $comment
4561 Version: $version
4562 Requires: $(enabled shared || echo $requires)
4563 Requires.private: $(enabled shared && echo $requires)
4564 Conflicts:
4565 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4566 Libs.private: $(enabled shared && echo $libs)
4567 Cflags: -I\${includedir}
4568 EOF
4569     cat <<EOF > $name/$name-uninstalled.pc
4570 prefix=
4571 exec_prefix=
4572 libdir=\${pcfiledir}
4573 includedir=${source_path}
4574
4575 Name: $name
4576 Description: $comment
4577 Version: $version
4578 Requires: $requires
4579 Conflicts:
4580 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4581 Cflags: -I\${includedir}
4582 EOF
4583 }
4584
4585 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4586 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4587 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4588 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4589
4590 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4591 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4592 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4593 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4594 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4595 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4596 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"