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