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

   1 #!/bin/sh
   2 #
   3 # FFmpeg 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 FFMPEG, 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 FFmpeg."
  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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  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   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller 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-ffmpeg         disable ffmpeg build
 109   --disable-ffplay         disable ffplay build
 110   --disable-ffprobe        disable ffprobe build
 111   --disable-ffserver       disable ffserver build
 112
 113 Documentation options:
 114   --disable-doc            do not build documentation
 115   --disable-htmlpages      do not build HTML documentation pages
 116   --disable-manpages       do not build man documentation pages
 117   --disable-podpages       do not build POD documentation pages
 118   --disable-txtpages       do not build text documentation pages
 119
 120 Component options:
 121   --disable-avdevice       disable libavdevice build
 122   --disable-avcodec        disable libavcodec build
 123   --disable-avformat       disable libavformat build
 124   --disable-avutil         disable libavutil build
 125   --disable-swresample     disable libswresample build
 126   --disable-swscale        disable libswscale build
 127   --disable-postproc       disable libpostproc build
 128   --disable-avfilter       disable libavfilter build
 129   --enable-avresample      enable libavresample build [no]
 130   --disable-pthreads       disable pthreads [auto]
 131   --disable-w32threads     disable Win32 threads [auto]
 132   --disable-os2threads     disable OS/2 threads [auto]
 133   --enable-x11grab         enable X11 grabbing [no]
 134   --disable-network        disable network support [no]
 135   --disable-dct            disable DCT code
 136   --disable-dwt            disable DWT code
 137   --disable-lsp            disable LSP code
 138   --disable-lzo            disable LZO decoder code
 139   --disable-mdct           disable MDCT code
 140   --disable-rdft           disable RDFT code
 141   --disable-fft            disable FFT code
 142   --enable-dxva2           enable DXVA2 code
 143   --enable-vaapi           enable VAAPI code [autodetect]
 144   --enable-vda             enable VDA code   [autodetect]
 145   --enable-vdpau           enable VDPAU code [autodetect]
 146
 147 Individual component options:
 148   --disable-everything     disable all components listed below
 149   --disable-encoder=NAME   disable encoder NAME
 150   --enable-encoder=NAME    enable encoder NAME
 151   --disable-encoders       disable all encoders
 152   --disable-decoder=NAME   disable decoder NAME
 153   --enable-decoder=NAME    enable decoder NAME
 154   --disable-decoders       disable all decoders
 155   --disable-hwaccel=NAME   disable hwaccel NAME
 156   --enable-hwaccel=NAME    enable hwaccel NAME
 157   --disable-hwaccels       disable all hwaccels
 158   --disable-muxer=NAME     disable muxer NAME
 159   --enable-muxer=NAME      enable muxer NAME
 160   --disable-muxers         disable all muxers
 161   --disable-demuxer=NAME   disable demuxer NAME
 162   --enable-demuxer=NAME    enable demuxer NAME
 163   --disable-demuxers       disable all demuxers
 164   --enable-parser=NAME     enable parser NAME
 165   --disable-parser=NAME    disable parser NAME
 166   --disable-parsers        disable all parsers
 167   --enable-bsf=NAME        enable bitstream filter NAME
 168   --disable-bsf=NAME       disable bitstream filter NAME
 169   --disable-bsfs           disable all bitstream filters
 170   --enable-protocol=NAME   enable protocol NAME
 171   --disable-protocol=NAME  disable protocol NAME
 172   --disable-protocols      disable all protocols
 173   --enable-indev=NAME      enable input device NAME
 174   --disable-indev=NAME     disable input device NAME
 175   --disable-indevs         disable input devices
 176   --enable-outdev=NAME     enable output device NAME
 177   --disable-outdev=NAME    disable output device NAME
 178   --disable-outdevs        disable output devices
 179   --disable-devices        disable all devices
 180   --enable-filter=NAME     enable filter NAME
 181   --disable-filter=NAME    disable filter NAME
 182   --disable-filters        disable all filters
 183
 184 External library support:
 185   --enable-avisynth        enable reading of AVISynth script files [no]
 186   --enable-bzlib           enable bzlib [autodetect]
 187   --enable-fontconfig      enable fontconfig
 188   --enable-frei0r          enable frei0r video filtering
 189   --enable-gnutls          enable gnutls [no]
 190   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 191   --enable-libass          enable libass subtitles rendering [no]
 192   --enable-libbluray       enable BluRay reading using libbluray [no]
 193   --enable-libcaca         enable textual display using libcaca
 194   --enable-libcelt         enable CELT decoding via libcelt [no]
 195   --enable-libcdio         enable audio CD grabbing with libcdio
 196   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 197                            and libraw1394 [no]
 198   --enable-libfaac         enable AAC encoding via libfaac [no]
 199   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 200   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 201   --enable-libfreetype     enable libfreetype [no]
 202   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 203   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 204   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 205   --enable-libmodplug      enable ModPlug via libmodplug [no]
 206   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 207   --enable-libnut          enable NUT (de)muxing via libnut,
 208                            native (de)muxer exists [no]
 209   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 210   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 211   --enable-libopencv       enable video filtering via libopencv [no]
 212   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 213   --enable-libopus         enable Opus decoding via libopus [no]
 214   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 215   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 216   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 217   --enable-libsoxr         enable Include libsoxr resampling [no]
 218   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 219   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 220   --enable-libtheora       enable Theora encoding via libtheora [no]
 221   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 222   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 223   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 224   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 225   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 226   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 227                            native implementation exists [no]
 228   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 229   --enable-libx264         enable H.264 encoding via x264 [no]
 230   --enable-libxavs         enable AVS encoding via xavs [no]
 231   --enable-libxvid         enable Xvid encoding via xvidcore,
 232                            native MPEG-4/Xvid encoder exists [no]
 233   --enable-openal          enable OpenAL 1.1 capture support [no]
 234   --enable-openssl         enable openssl [no]
 235   --enable-zlib            enable zlib [autodetect]
 236
 237 Advanced options (experts only):
 238   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 239   --enable-cross-compile   assume a cross-compiler is used
 240   --sysroot=PATH           root of cross-build tree
 241   --sysinclude=PATH        location of cross-build system headers
 242   --target-os=OS           compiler targets OS [$target_os]
 243   --target-exec=CMD        command to run executables on target
 244   --target-path=DIR        path to view of build directory on target
 245   --toolchain=NAME         set tool defaults according to NAME
 246   --nm=NM                  use nm tool NM [$nm_default]
 247   --ar=AR                  use archive tool AR [$ar_default]
 248   --as=AS                  use assembler AS [$as_default]
 249   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 250   --cc=CC                  use C compiler CC [$cc_default]
 251   --cxx=CXX                use C compiler CXX [$cxx_default]
 252   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 253   --ld=LD                  use linker LD [$ld_default]
 254   --host-cc=HOSTCC         use host C compiler HOSTCC
 255   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 256   --host-ld=HOSTLD         use host linker HOSTLD
 257   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 258   --host-libs=HLIBS        use libs HLIBS when linking for host
 259   --host-os=OS             compiler host OS [$target_os]
 260   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 261   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 262   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 263   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 264   --extra-version=STRING   version string suffix []
 265   --optflags=OPTFLAGS      override optimization-related compiler flags
 266   --build-suffix=SUFFIX    library name suffix []
 267   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 268   --progs-suffix=SUFFIX    program name suffix []
 269   --arch=ARCH              select architecture [$arch]
 270   --cpu=CPU                select the minimum required CPU (affects
 271                            instruction selection, may crash on older CPUs)
 272   --enable-pic             build position-independent code
 273   --enable-sram            allow use of on-chip SRAM
 274   --enable-thumb           compile for Thumb instruction set
 275   --disable-symver         disable symbol versioning
 276   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 277   --disable-safe-bitstream-reader
 278                            disable buffer boundary checking in bitreaders
 279                            (faster, but may crash)
 280   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 281   --enable-lto             use link-time optimization
 282
 283 Optimization options (experts only):
 284   --disable-asm            disable all assembler optimizations
 285   --disable-altivec        disable AltiVec optimizations
 286   --disable-amd3dnow       disable 3DNow! optimizations
 287   --disable-amd3dnowext    disable 3DNow! extended optimizations
 288   --disable-mmx            disable MMX optimizations
 289   --disable-mmxext         disable MMXEXT optimizations
 290   --disable-sse            disable SSE optimizations
 291   --disable-sse2           disable SSE2 optimizations
 292   --disable-sse3           disable SSE3 optimizations
 293   --disable-ssse3          disable SSSE3 optimizations
 294   --disable-sse4           disable SSE4 optimizations
 295   --disable-sse42          disable SSE4.2 optimizations
 296   --disable-avx            disable AVX optimizations
 297   --disable-fma4           disable FMA4 optimizations
 298   --disable-armv5te        disable armv5te optimizations
 299   --disable-armv6          disable armv6 optimizations
 300   --disable-armv6t2        disable armv6t2 optimizations
 301   --disable-vfp            disable VFP optimizations
 302   --disable-neon           disable NEON optimizations
 303   --disable-vis            disable VIS optimizations
 304   --disable-inline-asm     disable use of inline assembler
 305   --disable-yasm           disable use of yasm assembler
 306   --disable-mips32r2       disable MIPS32R2 optimizations
 307   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 308   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 309   --disable-mipsfpu        disable floating point MIPS optimizations
 310   --disable-fast-unaligned consider unaligned accesses slow
 311
 312 Developer options (useful when working on FFmpeg itself):
 313   --enable-coverage        build with test coverage instrumentation
 314   --disable-debug          disable debugging symbols
 315   --enable-debug=LEVEL     set the debug level [$debuglevel]
 316   --disable-optimizations  disable compiler optimizations
 317   --enable-extra-warnings  enable more compiler warnings
 318   --disable-stripping      disable stripping of executables and shared libraries
 319   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 320                            2 causes a slowdown at runtime.
 321   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 322   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 323                            leaks and errors, using the specified valgrind binary.
 324                            Cannot be combined with --target-exec
 325   --enable-ftrapv          Trap arithmetic overflows
 326   --samples=PATH           location of test samples for FATE, if not set use
 327                            \$FATE_SAMPLES at make invocation time.
 328   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 329                            should be used only for debugging purposes)
 330   --enable-random          randomly enable/disable components
 331   --disable-random
 332   --enable-random=LIST     randomly enable/disable specific components or
 333   --disable-random=LIST    component groups. LIST is a comma-separated list
 334                            of NAME[:PROB] entries where NAME is a component
 335                            (group) and PROB the probability associated with
 336                            NAME (default 0.5).
 337   --random-seed=VALUE      seed value for --enable/disable-random
 338
 339 NOTE: Object files are built at the place where configure is launched.
 340 EOF
 341   exit 0
 342 }
 343
 344 quotes='""'
 345
 346 log(){
 347     echo "$@" >> $logfile
 348 }
 349
 350 log_file(){
 351     log BEGIN $1
 352     pr -n -t $1 >> $logfile
 353     log END $1
 354 }
 355
 356 echolog(){
 357     log "$@"
 358     echo "$@"
 359 }
 360
 361 warn(){
 362     log "WARNING: $*"
 363     WARNINGS="${WARNINGS}WARNING: $*\n"
 364 }
 365
 366 die(){
 367     echolog "$@"
 368     cat <<EOF
 369
 370 If you think configure made a mistake, make sure you are using the latest
 371 version from Git.  If the latest version fails, report the problem to the
 372 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 373 EOF
 374     if disabled logging; then
 375         cat <<EOF
 376 Rerun configure with logging enabled (do not use --disable-logging), and
 377 include the log this produces with your report.
 378 EOF
 379     else
 380         cat <<EOF
 381 Include the log file "$logfile" produced by configure as this will help
 382 solving the problem.
 383 EOF
 384     fi
 385     exit 1
 386 }
 387
 388 # Avoid locale weirdness, besides we really just want to translate ASCII.
 389 toupper(){
 390     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 391 }
 392
 393 tolower(){
 394     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 395 }
 396
 397 c_escape(){
 398     echo "$*" | sed 's/["\\]/\\\0/g'
 399 }
 400
 401 sh_quote(){
 402     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 403     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 404     echo "$v"
 405 }
 406
 407 cleanws(){
 408     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 409 }
 410
 411 filter(){
 412     pat=$1
 413     shift
 414     for v; do
 415         eval "case $v in $pat) echo $v ;; esac"
 416     done
 417 }
 418
 419 filter_out(){
 420     pat=$1
 421     shift
 422     for v; do
 423         eval "case $v in $pat) ;; *) echo $v ;; esac"
 424     done
 425 }
 426
 427 map(){
 428     m=$1
 429     shift
 430     for v; do eval $m; done
 431 }
 432
 433 add_suffix(){
 434     suffix=$1
 435     shift
 436     for v; do echo ${v}${suffix}; done
 437 }
 438
 439 set_all(){
 440     value=$1
 441     shift
 442     for var in $*; do
 443         eval $var=$value
 444     done
 445 }
 446
 447 set_weak(){
 448     value=$1
 449     shift
 450     for var; do
 451         eval : \${$var:=$value}
 452     done
 453 }
 454
 455 set_safe(){
 456     var=$1
 457     shift
 458     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 459 }
 460
 461 get_safe(){
 462     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 463 }
 464
 465 pushvar(){
 466     for var in $*; do
 467         eval level=\${${var}_level:=0}
 468         eval ${var}_${level}="\$$var"
 469         eval ${var}_level=$(($level+1))
 470     done
 471 }
 472
 473 popvar(){
 474     for var in $*; do
 475         eval level=\${${var}_level:-0}
 476         test $level = 0 && continue
 477         eval level=$(($level-1))
 478         eval $var="\${${var}_${level}}"
 479         eval ${var}_level=$level
 480         eval unset ${var}_${level}
 481     done
 482 }
 483
 484 enable(){
 485     set_all yes $*
 486 }
 487
 488 disable(){
 489     set_all no $*
 490 }
 491
 492 enable_weak(){
 493     set_weak yes $*
 494 }
 495
 496 disable_weak(){
 497     set_weak no $*
 498 }
 499
 500 enable_safe(){
 501     for var; do
 502         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 503     done
 504 }
 505
 506 disable_safe(){
 507     for var; do
 508         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 509     done
 510 }
 511
 512 do_enable_deep(){
 513     for var; do
 514         enabled $var && continue
 515         eval sel="\$${var}_select"
 516         eval sgs="\$${var}_suggest"
 517         pushvar var sgs
 518         enable_deep $sel
 519         popvar sgs
 520         enable_deep_weak $sgs
 521         popvar var
 522     done
 523 }
 524
 525 enable_deep(){
 526     do_enable_deep $*
 527     enable $*
 528 }
 529
 530 enable_deep_weak(){
 531     do_enable_deep $*
 532     enable_weak $*
 533 }
 534
 535 enabled(){
 536     test "${1#!}" = "$1" && op== || op=!=
 537     eval test "x\$${1#!}" $op "xyes"
 538 }
 539
 540 disabled(){
 541     test "${1#!}" = "$1" && op== || op=!=
 542     eval test "x\$${1#!}" $op "xno"
 543 }
 544
 545 enabled_all(){
 546     for opt; do
 547         enabled $opt || return 1
 548     done
 549 }
 550
 551 disabled_all(){
 552     for opt; do
 553         disabled $opt || return 1
 554     done
 555 }
 556
 557 enabled_any(){
 558     for opt; do
 559         enabled $opt && return 0
 560     done
 561 }
 562
 563 disabled_any(){
 564     for opt; do
 565         disabled $opt && return 0
 566     done
 567     return 1
 568 }
 569
 570 set_default(){
 571     for opt; do
 572         eval : \${$opt:=\$${opt}_default}
 573     done
 574 }
 575
 576 is_in(){
 577     value=$1
 578     shift
 579     for var in $*; do
 580         [ $var = $value ] && return 0
 581     done
 582     return 1
 583 }
 584
 585 do_check_deps(){
 586     for cfg; do
 587         cfg="${cfg#!}"
 588         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 589         disabled ${cfg}_checking && continue
 590         enable ${cfg}_checking
 591         append allopts $cfg
 592
 593         eval dep_all="\$${cfg}_deps"
 594         eval dep_any="\$${cfg}_deps_any"
 595         eval dep_sel="\$${cfg}_select"
 596         eval dep_sgs="\$${cfg}_suggest"
 597         eval dep_ifa="\$${cfg}_if"
 598         eval dep_ifn="\$${cfg}_if_any"
 599
 600         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 601         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 602         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 603
 604         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 605         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 606         enabled_all  $dep_all || disable $cfg
 607         enabled_any  $dep_any || disable $cfg
 608         disabled_any $dep_sel && disable $cfg
 609
 610         if enabled $cfg; then
 611             enable_deep $dep_sel
 612             enable_deep_weak $dep_sgs
 613         fi
 614
 615         disable ${cfg}_checking
 616     done
 617 }
 618
 619 check_deps(){
 620     unset allopts
 621
 622     do_check_deps "$@"
 623
 624     for cfg in $allopts; do
 625         enabled $cfg || continue
 626         eval dep_extralibs="\$${cfg}_extralibs"
 627         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 628     done
 629 }
 630
 631 print_config(){
 632     pfx=$1
 633     files=$2
 634     shift 2
 635     map 'eval echo "$v \${$v:-no}"' "$@" |
 636     awk "BEGIN { split(\"$files\", files) }
 637         {
 638             c = \"$pfx\" toupper(\$1);
 639             v = \$2;
 640             sub(/yes/, 1, v);
 641             sub(/no/,  0, v);
 642             for (f in files) {
 643                 file = files[f];
 644                 if (file ~ /\\.h\$/) {
 645                     printf(\"#define %s %d\\n\", c, v) >>file;
 646                 } else if (file ~ /\\.asm\$/) {
 647                     printf(\"%%define %s %d\\n\", c, v) >>file;
 648                 } else if (file ~ /\\.mak\$/) {
 649                     n = -v ? \"\" : \"!\";
 650                     printf(\"%s%s=yes\\n\", n, c) >>file;
 651                 }
 652             }
 653         }"
 654 }
 655
 656 print_enabled(){
 657     suf=$1
 658     shift
 659     for v; do
 660         enabled $v && printf "%s\n" ${v%$suf};
 661     done
 662 }
 663
 664 append(){
 665     var=$1
 666     shift
 667     eval "$var=\"\$$var $*\""
 668 }
 669
 670 prepend(){
 671     var=$1
 672     shift
 673     eval "$var=\"$* \$$var\""
 674 }
 675
 676 add_cppflags(){
 677     append CPPFLAGS "$@"
 678 }
 679
 680 add_cflags(){
 681     append CFLAGS $($cflags_filter "$@")
 682 }
 683
 684 add_cxxflags(){
 685     append CXXFLAGS $($cflags_filter "$@")
 686 }
 687
 688 add_asflags(){
 689     append ASFLAGS $($asflags_filter "$@")
 690 }
 691
 692 add_ldflags(){
 693     append LDFLAGS $($ldflags_filter "$@")
 694 }
 695
 696 add_extralibs(){
 697     prepend extralibs $($ldflags_filter "$@")
 698 }
 699
 700 add_host_cflags(){
 701     append host_cflags $($host_cflags_filter "$@")
 702 }
 703
 704 add_host_ldflags(){
 705     append host_ldflags $($host_ldflags_filter "$@")
 706 }
 707
 708 add_compat(){
 709     append compat_objs $1
 710     shift
 711     map 'add_cppflags -D$v' "$@"
 712 }
 713
 714 check_cmd(){
 715     log "$@"
 716     "$@" >> $logfile 2>&1
 717 }
 718
 719 cc_o(){
 720     eval printf '%s\\n' $CC_O
 721 }
 722
 723 cc_e(){
 724     eval printf '%s\\n' $CC_E
 725 }
 726
 727 check_cc(){
 728     log check_cc "$@"
 729     cat > $TMPC
 730     log_file $TMPC
 731     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 732 }
 733
 734 check_cxx(){
 735     log check_cxx "$@"
 736     cat > $TMPCPP
 737     log_file $TMPCPP
 738     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 739 }
 740
 741 check_cpp(){
 742     log check_cpp "$@"
 743     cat > $TMPC
 744     log_file $TMPC
 745     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 746 }
 747
 748 as_o(){
 749     eval printf '%s\\n' $AS_O
 750 }
 751
 752 check_as(){
 753     log check_as "$@"
 754     cat > $TMPS
 755     log_file $TMPS
 756     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 757 }
 758
 759 check_inline_asm(){
 760     log check_inline_asm "$@"
 761     name="$1"
 762     code="$2"
 763     shift 2
 764     disable $name
 765     check_cc "$@" <<EOF && enable $name
 766 void foo(void){ __asm__ volatile($code); }
 767 EOF
 768 }
 769
 770 check_insn(){
 771     log check_insn "$@"
 772     check_inline_asm ${1}_inline "\"$2\""
 773     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 774 }
 775
 776 check_yasm(){
 777     log check_yasm "$@"
 778     echo "$1" > $TMPS
 779     log_file $TMPS
 780     shift 1
 781     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 782 }
 783
 784 ld_o(){
 785     eval printf '%s\\n' $LD_O
 786 }
 787
 788 check_ld(){
 789     log check_ld "$@"
 790     type=$1
 791     shift 1
 792     flags=$(filter_out '-l*|*.so' $@)
 793     libs=$(filter '-l*|*.so' $@)
 794     check_$type $($cflags_filter $flags) || return
 795     flags=$($ldflags_filter $flags)
 796     libs=$($ldflags_filter $libs)
 797     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 798 }
 799
 800 check_code(){
 801     log check_code "$@"
 802     check=$1
 803     headers=$2
 804     code=$3
 805     shift 3
 806     {
 807         for hdr in $headers; do
 808             echo "#include <$hdr>"
 809         done
 810         echo "int main(void) { $code; return 0; }"
 811     } | check_$check "$@"
 812 }
 813
 814 check_cppflags(){
 815     log check_cppflags "$@"
 816     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 817 int x;
 818 EOF
 819 }
 820
 821 check_cflags(){
 822     log check_cflags "$@"
 823     set -- $($cflags_filter "$@")
 824     check_cc "$@" <<EOF && append CFLAGS "$@"
 825 int x;
 826 EOF
 827 }
 828
 829 check_cxxflags(){
 830     log check_cxxflags "$@"
 831     set -- $($cflags_filter "$@")
 832     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 833 int x;
 834 EOF
 835 }
 836
 837 test_ldflags(){
 838     log test_ldflags "$@"
 839     check_ld "cc" "$@" <<EOF
 840 int main(void){ return 0; }
 841 EOF
 842 }
 843
 844 check_ldflags(){
 845     log check_ldflags "$@"
 846     test_ldflags "$@" && add_ldflags "$@"
 847 }
 848
 849 check_header(){
 850     log check_header "$@"
 851     header=$1
 852     shift
 853     disable_safe $header
 854     check_cpp "$@" <<EOF && enable_safe $header
 855 #include <$header>
 856 int x;
 857 EOF
 858 }
 859
 860 check_func(){
 861     log check_func "$@"
 862     func=$1
 863     shift
 864     disable $func
 865     check_ld "cc" "$@" <<EOF && enable $func
 866 extern int $func();
 867 int main(void){ $func(); }
 868 EOF
 869 }
 870
 871 check_mathfunc(){
 872     log check_mathfunc "$@"
 873     func=$1
 874     narg=$2
 875     shift 2
 876     test $narg = 2 && args="f, g" || args="f"
 877     disable $func
 878     check_ld "cc" "$@" <<EOF && enable $func
 879 #include <math.h>
 880 float foo(float f, float g) { return $func($args); }
 881 int main(void){ return (int) foo; }
 882 EOF
 883 }
 884
 885 check_func_headers(){
 886     log check_func_headers "$@"
 887     headers=$1
 888     funcs=$2
 889     shift 2
 890     {
 891         for hdr in $headers; do
 892             echo "#include <$hdr>"
 893         done
 894         for func in $funcs; do
 895             echo "long check_$func(void) { return (long) $func; }"
 896         done
 897         echo "int main(void) { return 0; }"
 898     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 899 }
 900
 901 check_class_headers_cpp(){
 902     log check_class_headers_cpp "$@"
 903     headers=$1
 904     classes=$2
 905     shift 2
 906     {
 907         for hdr in $headers; do
 908             echo "#include <$hdr>"
 909         done
 910         echo "int main(void) { "
 911         i=1
 912         for class in $classes; do
 913             echo "$class obj$i;"
 914             i=$(expr $i + 1)
 915         done
 916         echo "return 0; }"
 917     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 918 }
 919
 920 check_cpp_condition(){
 921     log check_cpp_condition "$@"
 922     header=$1
 923     condition=$2
 924     shift 2
 925     check_cpp "$@" <<EOF
 926 #include <$header>
 927 #if !($condition)
 928 #error "unsatisfied condition: $condition"
 929 #endif
 930 EOF
 931 }
 932
 933 check_lib(){
 934     log check_lib "$@"
 935     header="$1"
 936     func="$2"
 937     shift 2
 938     check_header $header && check_func $func "$@" && add_extralibs "$@"
 939 }
 940
 941 check_lib2(){
 942     log check_lib2 "$@"
 943     headers="$1"
 944     funcs="$2"
 945     shift 2
 946     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 947 }
 948
 949 check_lib_cpp(){
 950     log check_lib_cpp "$@"
 951     headers="$1"
 952     classes="$2"
 953     shift 2
 954     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 955 }
 956
 957 check_pkg_config(){
 958     log check_pkg_config "$@"
 959     pkg="$1"
 960     headers="$2"
 961     funcs="$3"
 962     shift 3
 963     $pkg_config --exists $pkg 2>/dev/null || return
 964     pkg_cflags=$($pkg_config --cflags $pkg)
 965     pkg_libs=$($pkg_config --libs $pkg)
 966     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 967         set_safe ${pkg}_cflags $pkg_cflags   &&
 968         set_safe ${pkg}_libs   $pkg_libs
 969 }
 970
 971 check_exec(){
 972     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 973 }
 974
 975 check_exec_crash(){
 976     code=$(cat)
 977
 978     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 979     # are safe but may not be available everywhere.  Thus we use
 980     # raise(SIGTERM) instead.  The check is run in a subshell so we
 981     # can redirect the "Terminated" message from the shell.  SIGBUS
 982     # is not defined by standard C so it is used conditionally.
 983
 984     (check_exec "$@") >> $logfile 2>&1 <<EOF
 985 #include <signal.h>
 986 static void sighandler(int sig){
 987     raise(SIGTERM);
 988 }
 989 int func(void){
 990     $code
 991 }
 992 int (*func_ptr)(void) = func;
 993 int main(void){
 994     signal(SIGILL, sighandler);
 995     signal(SIGFPE, sighandler);
 996     signal(SIGSEGV, sighandler);
 997 #ifdef SIGBUS
 998     signal(SIGBUS, sighandler);
 999 #endif
1000     return func_ptr();
1001 }
1002 EOF
1003 }
1004
1005 check_type(){
1006     log check_type "$@"
1007     headers=$1
1008     type=$2
1009     shift 2
1010     disable_safe "$type"
1011     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1012 }
1013
1014 check_struct(){
1015     log check_type "$@"
1016     headers=$1
1017     struct=$2
1018     member=$3
1019     shift 3
1020     disable_safe "${struct}_${member}"
1021     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1022         enable_safe "${struct}_${member}"
1023 }
1024
1025 require(){
1026     name="$1"
1027     header="$2"
1028     func="$3"
1029     shift 3
1030     check_lib $header $func "$@" || die "ERROR: $name not found"
1031 }
1032
1033 require2(){
1034     name="$1"
1035     headers="$2"
1036     func="$3"
1037     shift 3
1038     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1039 }
1040
1041 require_cpp(){
1042     name="$1"
1043     headers="$2"
1044     classes="$3"
1045     shift 3
1046     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1047 }
1048
1049 require_pkg_config(){
1050     pkg="$1"
1051     check_pkg_config "$@" || die "ERROR: $pkg not found"
1052     add_cflags    $(get_safe ${pkg}_cflags)
1053     add_extralibs $(get_safe ${pkg}_libs)
1054 }
1055
1056 hostcc_o(){
1057     eval printf '%s\\n' $HOSTCC_O
1058 }
1059
1060 check_host_cc(){
1061     log check_host_cc "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1065 }
1066
1067 check_host_cflags(){
1068     log check_host_cflags "$@"
1069     set -- $($host_cflags_filter "$@")
1070     check_host_cc "$@" <<EOF && append host_cflags "$@"
1071 int x;
1072 EOF
1073 }
1074
1075 apply(){
1076     file=$1
1077     shift
1078     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1079 }
1080
1081 cp_if_changed(){
1082     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1083     mkdir -p "$(dirname $2)"
1084     $cp_f "$1" "$2"
1085 }
1086
1087 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1088 # system-dependent things.
1089
1090 COMPONENT_LIST="
1091     bsfs
1092     decoders
1093     demuxers
1094     encoders
1095     filters
1096     hwaccels
1097     indevs
1098     muxers
1099     outdevs
1100     parsers
1101     protocols
1102 "
1103
1104 DOCUMENT_LIST="
1105     doc
1106     htmlpages
1107     manpages
1108     podpages
1109     txtpages
1110 "
1111
1112 LIBRARY_LIST="
1113     avcodec
1114     avdevice
1115     avfilter
1116     avformat
1117     avresample
1118     avutil
1119     postproc
1120     swresample
1121     swscale
1122 "
1123
1124 PROGRAM_LIST="
1125     ffplay
1126     ffprobe
1127     ffserver
1128     ffmpeg
1129 "
1130
1131 CONFIG_LIST="
1132     $COMPONENT_LIST
1133     $DOCUMENT_LIST
1134     $LIBRARY_LIST
1135     $PROGRAM_LIST
1136     avisynth
1137     bzlib
1138     crystalhd
1139     dct
1140     dwt
1141     dxva2
1142     fast_unaligned
1143     fft
1144     fontconfig
1145     frei0r
1146     ftrapv
1147     gnutls
1148     gpl
1149     gray
1150     hardcoded_tables
1151     incompatible_fork_abi
1152     libaacplus
1153     libass
1154     libbluray
1155     libcaca
1156     libcdio
1157     libcelt
1158     libdc1394
1159     libfaac
1160     libfdk_aac
1161     libflite
1162     libfreetype
1163     libgsm
1164     libiec61883
1165     libilbc
1166     libmodplug
1167     libmp3lame
1168     libnut
1169     libopencore_amrnb
1170     libopencore_amrwb
1171     libopencv
1172     libopenjpeg
1173     libopus
1174     libpulse
1175     librtmp
1176     libschroedinger
1177     libsoxr
1178     libspeex
1179     libstagefright_h264
1180     libtheora
1181     libtwolame
1182     libutvideo
1183     libv4l2
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libx264
1189     libxavs
1190     libxvid
1191     lsp
1192     lzo
1193     mdct
1194     memalign_hack
1195     memory_poisoning
1196     network
1197     nonfree
1198     openal
1199     openssl
1200     pic
1201     rdft
1202     runtime_cpudetect
1203     safe_bitstream_reader
1204     shared
1205     small
1206     sram
1207     static
1208     swscale_alpha
1209     thumb
1210     vaapi
1211     vda
1212     vdpau
1213     version3
1214     xmm_clobber_test
1215     x11grab
1216     zlib
1217 "
1218
1219 THREADS_LIST='
1220     pthreads
1221     w32threads
1222     os2threads
1223 '
1224
1225 ARCH_LIST='
1226     aarch64
1227     alpha
1228     arm
1229     avr32
1230     avr32_ap
1231     avr32_uc
1232     bfin
1233     ia64
1234     m68k
1235     mips
1236     mips64
1237     parisc
1238     ppc
1239     ppc64
1240     s390
1241     sh4
1242     sparc
1243     sparc64
1244     tilegx
1245     tilepro
1246     tomi
1247     x86
1248     x86_32
1249     x86_64
1250 '
1251
1252 ARCH_EXT_LIST_ARM='
1253     armv5te
1254     armv6
1255     armv6t2
1256     neon
1257     vfp
1258     vfpv3
1259 '
1260
1261 ARCH_EXT_LIST_X86='
1262     amd3dnow
1263     amd3dnowext
1264     avx
1265     fma4
1266     mmx
1267     mmxext
1268     sse
1269     sse2
1270     sse3
1271     sse4
1272     sse42
1273     ssse3
1274 '
1275
1276 ARCH_EXT_LIST="
1277     $ARCH_EXT_LIST_ARM
1278     $ARCH_EXT_LIST_X86
1279     altivec
1280     ppc4xx
1281     vis
1282     mipsfpu
1283     mips32r2
1284     mipsdspr1
1285     mipsdspr2
1286 "
1287
1288 HAVE_LIST_CMDLINE='
1289     inline_asm
1290     symver
1291     yasm
1292 '
1293
1294 HAVE_LIST_PUB='
1295     bigendian
1296     fast_unaligned
1297     incompatible_fork_abi
1298 '
1299
1300 MATH_FUNCS="
1301     atanf
1302     atan2f
1303     cbrt
1304     cbrtf
1305     cosf
1306     exp2
1307     exp2f
1308     expf
1309     isinf
1310     isnan
1311     ldexpf
1312     llrint
1313     llrintf
1314     log2
1315     log2f
1316     log10f
1317     lrint
1318     lrintf
1319     powf
1320     rint
1321     round
1322     roundf
1323     sinf
1324     trunc
1325     truncf
1326 "
1327
1328 HAVE_LIST="
1329     $ARCH_EXT_LIST
1330     $(add_suffix _external $ARCH_EXT_LIST)
1331     $(add_suffix _inline   $ARCH_EXT_LIST)
1332     $HAVE_LIST_CMDLINE
1333     $HAVE_LIST_PUB
1334     $THREADS_LIST
1335     $MATH_FUNCS
1336     access
1337     aligned_malloc
1338     aligned_stack
1339     alsa_asoundlib_h
1340     altivec_h
1341     arpa_inet_h
1342     asm_mod_q
1343     asm_mod_y
1344     asm_types_h
1345     attribute_may_alias
1346     attribute_packed
1347     cdio_paranoia_h
1348     cdio_paranoia_paranoia_h
1349     clock_gettime
1350     closesocket
1351     cmov
1352     CommandLineToArgvW
1353     cpunop
1354     CryptGenRandom
1355     dcbzl
1356     dev_bktr_ioctl_bt848_h
1357     dev_bktr_ioctl_meteor_h
1358     dev_ic_bt8xx_h
1359     dev_video_bktr_ioctl_bt848_h
1360     dev_video_meteor_ioctl_meteor_h
1361     direct_h
1362     dlfcn_h
1363     dlopen
1364     dos_paths
1365     dxva_h
1366     ebp_available
1367     ebx_available
1368     fast_64bit
1369     fast_clz
1370     fast_cmov
1371     fcntl
1372     fork
1373     getaddrinfo
1374     gethrtime
1375     getopt
1376     GetProcessAffinityMask
1377     GetProcessMemoryInfo
1378     GetProcessTimes
1379     GetSystemTimeAsFileTime
1380     getrusage
1381     getservbyport
1382     gettimeofday
1383     glob
1384     gnu_as
1385     gsm_h
1386     ibm_asm
1387     inet_aton
1388     io_h
1389     isatty
1390     jack_port_get_latency_range
1391     kbhit
1392     ldbrx
1393     libdc1394_1
1394     libdc1394_2
1395     local_aligned_16
1396     local_aligned_8
1397     localtime_r
1398     loongson
1399     lzo1x_999_compress
1400     machine_ioctl_bt848_h
1401     machine_ioctl_meteor_h
1402     makeinfo
1403     malloc_h
1404     MapViewOfFile
1405     memalign
1406     mkstemp
1407     mm_empty
1408     mmap
1409     mprotect
1410     msvcrt
1411     nanosleep
1412     openjpeg_1_5_openjpeg_h
1413     PeekNamedPipe
1414     perl
1415     pod2man
1416     poll_h
1417     posix_memalign
1418     pthread_cancel
1419     rdtsc
1420     rsync_contimeout
1421     sched_getaffinity
1422     sdl
1423     sdl_video_size
1424     SetConsoleTextAttribute
1425     setmode
1426     setrlimit
1427     Sleep
1428     sndio_h
1429     socklen_t
1430     soundcard_h
1431     strerror_r
1432     struct_addrinfo
1433     struct_group_source_req
1434     struct_ip_mreq_source
1435     struct_ipv6_mreq
1436     struct_pollfd
1437     struct_rusage_ru_maxrss
1438     struct_sctp_event_subscribe
1439     struct_sockaddr_in6
1440     struct_sockaddr_sa_len
1441     struct_sockaddr_storage
1442     struct_v4l2_frmivalenum_discrete
1443     symver_asm_label
1444     symver_gnu_asm
1445     sysconf
1446     sysctl
1447     sys_mman_h
1448     sys_param_h
1449     sys_resource_h
1450     sys_select_h
1451     sys_soundcard_h
1452     sys_time_h
1453     sys_videoio_h
1454     termios_h
1455     texi2html
1456     threads
1457     unistd_h
1458     usleep
1459     vfp_args
1460     VirtualAlloc
1461     windows_h
1462     winsock2_h
1463     xform_asm
1464     xmm_clobbers
1465 "
1466
1467 # options emitted with CONFIG_ prefix but not available on the command line
1468 CONFIG_EXTRA="
1469     aandcttables
1470     ac3dsp
1471     error_resilience
1472     gcrypt
1473     golomb
1474     gplv3
1475     h264chroma
1476     h264dsp
1477     h264pred
1478     h264qpel
1479     huffman
1480     lgplv3
1481     lpc
1482     mpegaudio
1483     mpegaudiodsp
1484     mpegvideo
1485     mpegvideoenc
1486     nettle
1487     rangecoder
1488     rtpdec
1489     rtpenc_chain
1490     sinewin
1491     videodsp
1492     vp3dsp
1493 "
1494
1495 CMDLINE_SELECT="
1496     $ARCH_EXT_LIST
1497     $CONFIG_LIST
1498     $HAVE_LIST_CMDLINE
1499     $THREADS_LIST
1500     asm
1501     coverage
1502     cross_compile
1503     debug
1504     extra_warnings
1505     logging
1506     lto
1507     optimizations
1508     stripping
1509 "
1510
1511 PATHS_LIST='
1512     bindir
1513     datadir
1514     incdir
1515     libdir
1516     mandir
1517     prefix
1518     shlibdir
1519 '
1520
1521 CMDLINE_SET="
1522     $PATHS_LIST
1523     ar
1524     arch
1525     as
1526     assert_level
1527     build_suffix
1528     cc
1529     cpu
1530     cross_prefix
1531     cxx
1532     dep_cc
1533     extra_version
1534     host_cc
1535     host_cflags
1536     host_ld
1537     host_ldflags
1538     host_libs
1539     host_os
1540     install
1541     ld
1542     logfile
1543     malloc_prefix
1544     nm
1545     optflags
1546     pkg_config
1547     progs_suffix
1548     random_seed
1549     samples
1550     strip
1551     sysinclude
1552     sysroot
1553     target_exec
1554     target_os
1555     target_path
1556     toolchain
1557     valgrind
1558     yasmexe
1559 "
1560
1561 CMDLINE_APPEND="
1562     extra_cflags
1563     extra_cxxflags
1564 "
1565
1566 # code dependency declarations
1567
1568 # architecture extensions
1569
1570 armv5te_deps="arm"
1571 armv6_deps="arm"
1572 armv6t2_deps="arm"
1573 neon_deps="arm"
1574 vfp_deps="arm"
1575 vfpv3_deps="vfp"
1576
1577 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1578
1579 mipsfpu_deps="mips"
1580 mips32r2_deps="mips"
1581 mipsdspr1_deps="mips"
1582 mipsdspr2_deps="mips"
1583
1584 altivec_deps="ppc"
1585 ppc4xx_deps="ppc"
1586
1587 vis_deps="sparc"
1588
1589 x86_64_suggest="cmov fast_cmov"
1590
1591 amd3dnow_deps="mmx"
1592 amd3dnowext_deps="amd3dnow"
1593 mmx_deps="x86"
1594 mmxext_deps="mmx"
1595 sse_deps="mmxext"
1596 sse2_deps="sse"
1597 sse3_deps="sse2"
1598 ssse3_deps="sse3"
1599 sse4_deps="ssse3"
1600 sse42_deps="sse4"
1601 avx_deps="sse42"
1602 fma4_deps="avx"
1603
1604 mmx_external_deps="yasm"
1605 mmx_inline_deps="inline_asm"
1606 mmx_suggest="mmx_external mmx_inline"
1607
1608 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1609     eval dep=\$${ext}_deps
1610     eval ${ext}_external_deps='"${dep}_external"'
1611     eval ${ext}_inline_deps='"${dep}_inline"'
1612     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1613 done
1614
1615 aligned_stack_if_any="ppc x86"
1616 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1617 fast_clz_if_any="alpha avr32 mips ppc x86"
1618 fast_unaligned_if_any="ppc x86"
1619
1620 inline_asm_deps="!tms470"
1621 need_memalign="altivec neon sse"
1622
1623 symver_if_any="symver_asm_label symver_gnu_asm"
1624
1625 log2_deps="!msvcrt"
1626
1627 # subsystems
1628 dct_select="rdft"
1629 mdct_select="fft"
1630 rdft_select="fft"
1631 mpegaudio_select="mpegaudiodsp"
1632 mpegaudiodsp_select="dct"
1633 mpegvideo_select="videodsp"
1634 mpegvideoenc_select="mpegvideo"
1635
1636 # decoders / encoders
1637 aac_decoder_select="mdct sinewin"
1638 aac_encoder_select="mdct sinewin"
1639 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1640 ac3_decoder_select="mdct ac3dsp ac3_parser"
1641 ac3_encoder_select="mdct ac3dsp"
1642 ac3_fixed_encoder_select="mdct ac3dsp"
1643 alac_encoder_select="lpc"
1644 amrnb_decoder_select="lsp"
1645 amrwb_decoder_select="lsp"
1646 amv_encoder_select="aandcttables"
1647 atrac1_decoder_select="mdct sinewin"
1648 atrac3_decoder_select="mdct"
1649 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1650 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1651 cavs_decoder_select="golomb mpegvideo"
1652 comfortnoise_encoder_select="lpc"
1653 cook_decoder_select="mdct sinewin"
1654 cscd_decoder_select="lzo"
1655 cscd_decoder_suggest="zlib"
1656 dca_decoder_select="mdct"
1657 dirac_decoder_select="dwt golomb videodsp"
1658 dnxhd_encoder_select="aandcttables mpegvideoenc"
1659 dxa_decoder_select="zlib"
1660 eac3_decoder_select="ac3_decoder"
1661 eac3_encoder_select="ac3_encoder"
1662 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1663 eatgq_decoder_select="aandcttables"
1664 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1665 exr_decoder_select="zlib"
1666 ffv1_decoder_select="golomb rangecoder"
1667 ffv1_encoder_select="rangecoder"
1668 ffvhuff_encoder_select="huffman"
1669 flac_decoder_select="golomb"
1670 flac_encoder_select="golomb lpc"
1671 flashsv_decoder_select="zlib"
1672 flashsv_encoder_select="zlib"
1673 flashsv2_encoder_select="zlib"
1674 flashsv2_decoder_select="zlib"
1675 flv_decoder_select="h263_decoder"
1676 flv_encoder_select="h263_encoder"
1677 fraps_decoder_select="huffman"
1678 h261_decoder_select="error_resilience mpegvideo"
1679 h261_encoder_select="aandcttables mpegvideoenc"
1680 h263_decoder_select="error_resilience h263_parser mpegvideo"
1681 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1682 h263i_decoder_select="h263_decoder"
1683 h263p_encoder_select="h263_encoder"
1684 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1685 huffyuv_encoder_select="huffman"
1686 iac_decoder_select="fft mdct sinewin"
1687 imc_decoder_select="fft mdct sinewin"
1688 jpegls_decoder_select="golomb"
1689 jpegls_encoder_select="golomb"
1690 ljpeg_encoder_select="aandcttables mpegvideoenc"
1691 loco_decoder_select="golomb"
1692 mdec_decoder_select="error_resilience mpegvideo"
1693 mjpeg_encoder_select="aandcttables mpegvideoenc"
1694 mlp_decoder_select="mlp_parser"
1695 mp1_decoder_select="mpegaudio"
1696 mp1float_decoder_select="mpegaudio"
1697 mp2_decoder_select="mpegaudio"
1698 mp2float_decoder_select="mpegaudio"
1699 mp3_decoder_select="mpegaudio"
1700 mp3adu_decoder_select="mpegaudio"
1701 mp3adufloat_decoder_select="mpegaudio"
1702 mp3float_decoder_select="mpegaudio"
1703 mp3on4_decoder_select="mpegaudio"
1704 mp3on4float_decoder_select="mpegaudio"
1705 mpc7_decoder_select="mpegaudiodsp"
1706 mpc8_decoder_select="mpegaudiodsp"
1707 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1708 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1709 mpeg1video_decoder_select="error_resilience mpegvideo"
1710 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1711 mpeg2video_decoder_select="error_resilience mpegvideo"
1712 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1713 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1714 mpeg4_encoder_select="h263_encoder"
1715 msmpeg4v1_decoder_select="h263_decoder"
1716 msmpeg4v1_encoder_select="h263_encoder"
1717 msmpeg4v2_decoder_select="h263_decoder"
1718 msmpeg4v2_encoder_select="h263_encoder"
1719 msmpeg4v3_decoder_select="h263_decoder"
1720 msmpeg4v3_encoder_select="h263_encoder"
1721 mss2_decoder_select="vc1_decoder"
1722 nellymoser_decoder_select="mdct sinewin"
1723 nellymoser_encoder_select="mdct sinewin"
1724 nuv_decoder_select="lzo"
1725 png_decoder_select="zlib"
1726 png_encoder_select="zlib"
1727 qcelp_decoder_select="lsp"
1728 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1729 ra_144_encoder_select="lpc"
1730 ralf_decoder_select="golomb"
1731 rv10_decoder_select="h263_decoder"
1732 rv10_encoder_select="h263_encoder"
1733 rv20_decoder_select="h263_decoder"
1734 rv20_encoder_select="h263_encoder"
1735 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1736 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1737 shorten_decoder_select="golomb"
1738 sipr_decoder_select="lsp"
1739 snow_decoder_select="dwt rangecoder"
1740 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1741 sonic_decoder_select="golomb"
1742 sonic_encoder_select="golomb"
1743 sonic_ls_encoder_select="golomb"
1744 svq1_decoder_select="error_resilience mpegvideo"
1745 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1746 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1747 svq3_decoder_suggest="zlib"
1748 theora_decoder_select="vp3_decoder"
1749 tiff_decoder_suggest="zlib"
1750 tiff_encoder_suggest="zlib"
1751 truehd_decoder_select="mlp_parser"
1752 tscc_decoder_select="zlib"
1753 twinvq_decoder_select="mdct lsp sinewin"
1754 utvideo_encoder_select="huffman"
1755 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1756 vc1image_decoder_select="vc1_decoder"
1757 vorbis_decoder_select="mdct"
1758 vorbis_encoder_select="mdct"
1759 vp3_decoder_select="vp3dsp videodsp"
1760 vp5_decoder_select="vp3dsp videodsp"
1761 vp6_decoder_select="huffman vp3dsp videodsp"
1762 vp6a_decoder_select="vp6_decoder"
1763 vp6f_decoder_select="vp6_decoder"
1764 vp8_decoder_select="h264pred videodsp"
1765 wmapro_decoder_select="mdct sinewin"
1766 wmav1_decoder_select="mdct sinewin"
1767 wmav1_encoder_select="mdct sinewin"
1768 wmav2_decoder_select="mdct sinewin"
1769 wmav2_encoder_select="mdct sinewin"
1770 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1771 wmv1_decoder_select="h263_decoder"
1772 wmv1_encoder_select="h263_encoder"
1773 wmv2_decoder_select="h263_decoder"
1774 wmv2_encoder_select="h263_encoder"
1775 wmv3_decoder_select="vc1_decoder"
1776 wmv3image_decoder_select="wmv3_decoder"
1777 zerocodec_decoder_select="zlib"
1778 zlib_decoder_select="zlib"
1779 zlib_encoder_select="zlib"
1780 zmbv_decoder_select="zlib"
1781 zmbv_encoder_select="zlib"
1782
1783 # hardware accelerators
1784 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1785 vaapi_deps="va_va_h"
1786 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1787 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1788
1789 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1790 h263_vdpau_hwaccel_select="vdpau h263_decoder"
1791 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1792 h264_dxva2_hwaccel_deps="dxva2api_h"
1793 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1794 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1795 h264_vda_decoder_select="vda h264_parser h264_decoder"
1796 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1797 h264_vda_hwaccel_select="vda h264_decoder"
1798 h264_vdpau_decoder_select="vdpau h264_decoder"
1799 h264_vdpau_hwaccel_select="vdpau h264_decoder"
1800 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1801 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1802 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1803 mpeg2_crystalhd_decoder_select="crystalhd"
1804 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1805 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1806 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1807 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1808 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1809 mpeg4_crystalhd_decoder_select="crystalhd"
1810 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1811 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1812 mpeg4_vdpau_hwaccel_select="vdpau mpeg4_decoder"
1813 msmpeg4_crystalhd_decoder_select="crystalhd"
1814 vc1_crystalhd_decoder_select="crystalhd"
1815 vc1_dxva2_hwaccel_deps="dxva2api_h"
1816 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1817 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1818 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1819 vc1_vdpau_hwaccel_select="vdpau vc1_decoder"
1820 wmv3_crystalhd_decoder_select="crystalhd"
1821 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1822 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1823 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1824 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1825
1826 # parsers
1827 h264_parser_select="error_resilience golomb h264dsp h264pred h264qpel mpegvideo"
1828 mpeg4video_parser_select="error_resilience mpegvideo"
1829 mpegvideo_parser_select="error_resilience mpegvideo"
1830 vc1_parser_select="error_resilience mpegvideo"
1831
1832 # external libraries
1833 libaacplus_encoder_deps="libaacplus"
1834 libcelt_decoder_deps="libcelt"
1835 libfaac_encoder_deps="libfaac"
1836 libfdk_aac_encoder_deps="libfdk_aac"
1837 libgsm_decoder_deps="libgsm"
1838 libgsm_encoder_deps="libgsm"
1839 libgsm_ms_decoder_deps="libgsm"
1840 libgsm_ms_encoder_deps="libgsm"
1841 libilbc_decoder_deps="libilbc"
1842 libilbc_encoder_deps="libilbc"
1843 libmodplug_demuxer_deps="libmodplug"
1844 libmp3lame_encoder_deps="libmp3lame"
1845 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1846 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1847 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1848 libopenjpeg_decoder_deps="libopenjpeg"
1849 libopenjpeg_encoder_deps="libopenjpeg"
1850 libopus_decoder_deps="libopus"
1851 libopus_encoder_deps="libopus"
1852 libschroedinger_decoder_deps="libschroedinger"
1853 libschroedinger_encoder_deps="libschroedinger"
1854 libspeex_decoder_deps="libspeex"
1855 libspeex_encoder_deps="libspeex"
1856 libstagefright_h264_decoder_deps="libstagefright_h264"
1857 libtheora_encoder_deps="libtheora"
1858 libtwolame_encoder_deps="libtwolame"
1859 libvo_aacenc_encoder_deps="libvo_aacenc"
1860 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1861 libvorbis_decoder_deps="libvorbis"
1862 libvorbis_encoder_deps="libvorbis"
1863 libvpx_vp8_decoder_deps="libvpx"
1864 libvpx_vp8_encoder_deps="libvpx"
1865 libvpx_vp9_decoder_deps="libvpx"
1866 libvpx_vp9_encoder_deps="libvpx"
1867 libx264_encoder_deps="libx264"
1868 libx264rgb_encoder_deps="libx264"
1869 libxavs_encoder_deps="libxavs"
1870 libxvid_encoder_deps="libxvid"
1871 libutvideo_decoder_deps="libutvideo"
1872 libutvideo_encoder_deps="libutvideo"
1873
1874 # demuxers / muxers
1875 ac3_demuxer_select="ac3_parser"
1876 asf_stream_muxer_select="asf_muxer"
1877 avisynth_demuxer_deps="avisynth"
1878 dirac_demuxer_select="dirac_parser"
1879 dts_demuxer_select="dca_parser"
1880 dtshd_demuxer_select="dca_parser"
1881 eac3_demuxer_select="ac3_parser"
1882 f4v_muxer_select="mov_muxer"
1883 flac_demuxer_select="flac_parser"
1884 ipod_muxer_select="mov_muxer"
1885 ismv_muxer_select="mov_muxer"
1886 libnut_demuxer_deps="libnut"
1887 libnut_muxer_deps="libnut"
1888 matroska_audio_muxer_select="matroska_muxer"
1889 matroska_demuxer_suggest="bzlib lzo zlib"
1890 mov_demuxer_suggest="zlib"
1891 mov_muxer_select="rtpenc_chain"
1892 mp3_demuxer_select="mpegaudio_parser"
1893 mp4_muxer_select="mov_muxer"
1894 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1895 mpegtsraw_demuxer_select="mpegts_demuxer"
1896 mxf_d10_muxer_select="mxf_muxer"
1897 ogg_demuxer_select="golomb"
1898 psp_muxer_select="mov_muxer"
1899 rtp_demuxer_select="sdp_demuxer"
1900 rtp_muxer_select="mpegvideo"
1901 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1902 rtsp_demuxer_select="http_protocol rtpdec"
1903 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1904 sap_demuxer_select="sdp_demuxer"
1905 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1906 sdp_demuxer_select="rtpdec"
1907 smoothstreaming_muxer_select="ismv_muxer"
1908 spdif_muxer_select="aac_parser"
1909 tak_demuxer_select="tak_parser"
1910 tg2_muxer_select="mov_muxer"
1911 tgp_muxer_select="mov_muxer"
1912 vobsub_demuxer_select="mpegps_demuxer"
1913 w64_demuxer_deps="wav_demuxer"
1914 w64_muxer_deps="wav_muxer"
1915
1916 # indevs / outdevs
1917 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1918 alsa_outdev_deps="alsa_asoundlib_h"
1919 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1920 caca_outdev_deps="libcaca"
1921 dshow_indev_deps="IBaseFilter"
1922 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1923 dv1394_indev_deps="dv1394 dv_demuxer"
1924 fbdev_indev_deps="linux_fb_h"
1925 iec61883_indev_deps="libiec61883"
1926 jack_indev_deps="jack_jack_h sem_timedwait"
1927 lavfi_indev_deps="avfilter"
1928 libcdio_indev_deps="libcdio"
1929 libdc1394_indev_deps="libdc1394"
1930 libv4l2_indev_deps="libv4l2"
1931 openal_indev_deps="openal"
1932 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1933 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1934 pulse_indev_deps="libpulse"
1935 sdl_outdev_deps="sdl"
1936 sndio_indev_deps="sndio_h"
1937 sndio_outdev_deps="sndio_h"
1938 v4l_indev_deps="linux_videodev_h"
1939 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1940 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1941 vfwcap_indev_extralibs="-lavicap32"
1942 x11grab_indev_deps="x11grab"
1943
1944 # protocols
1945 bluray_protocol_deps="libbluray"
1946 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1947 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1948 ffrtmpcrypt_protocol_select="tcp_protocol"
1949 ffrtmphttp_protocol_deps="!librtmp_protocol"
1950 ffrtmphttp_protocol_select="http_protocol"
1951 gopher_protocol_select="network"
1952 httpproxy_protocol_select="tcp_protocol"
1953 http_protocol_select="tcp_protocol"
1954 https_protocol_select="tls_protocol"
1955 librtmp_protocol_deps="librtmp"
1956 librtmpe_protocol_deps="librtmp"
1957 librtmps_protocol_deps="librtmp"
1958 librtmpt_protocol_deps="librtmp"
1959 librtmpte_protocol_deps="librtmp"
1960 mmsh_protocol_select="http_protocol"
1961 mmst_protocol_select="network"
1962 rtmp_protocol_deps="!librtmp_protocol"
1963 rtmp_protocol_select="tcp_protocol"
1964 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1965 rtmps_protocol_deps="!librtmp_protocol"
1966 rtmps_protocol_select="tls_protocol"
1967 rtmpt_protocol_select="ffrtmphttp_protocol"
1968 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1969 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1970 rtp_protocol_select="udp_protocol"
1971 sctp_protocol_deps="struct_sctp_event_subscribe"
1972 sctp_protocol_select="network"
1973 srtp_protocol_select="rtp_protocol"
1974 tcp_protocol_select="network"
1975 tls_protocol_deps_any="openssl gnutls"
1976 tls_protocol_select="tcp_protocol"
1977 udp_protocol_select="network"
1978
1979 # filters
1980 aconvert_filter_deps="swresample"
1981 amovie_filter_deps="avcodec avformat"
1982 aresample_filter_deps="swresample"
1983 ass_filter_deps="libass"
1984 asyncts_filter_deps="avresample"
1985 atempo_filter_deps="avcodec rdft"
1986 blackframe_filter_deps="gpl"
1987 boxblur_filter_deps="gpl"
1988 colormatrix_filter_deps="gpl"
1989 cropdetect_filter_deps="gpl"
1990 decimate_filter_deps="gpl avcodec"
1991 delogo_filter_deps="gpl"
1992 deshake_filter_deps="avcodec"
1993 drawtext_filter_deps="libfreetype"
1994 ebur128_filter_deps="gpl"
1995 flite_filter_deps="libflite"
1996 frei0r_filter_deps="frei0r dlopen"
1997 frei0r_filter_extralibs='$ldl'
1998 frei0r_src_filter_deps="frei0r dlopen"
1999 frei0r_src_filter_extralibs='$ldl'
2000 geq_filter_deps="gpl"
2001 histeq_filter_deps="gpl"
2002 hqdn3d_filter_deps="gpl"
2003 hue_filter_deps="gpl"
2004 kerndeint_filter_deps="gpl"
2005 movie_filter_deps="avcodec avformat"
2006 mp_filter_deps="gpl avcodec swscale inline_asm"
2007 mptestsrc_filter_deps="gpl"
2008 negate_filter_deps="lut_filter"
2009 resample_filter_deps="avresample"
2010 ocv_filter_deps="libopencv"
2011 pan_filter_deps="swresample"
2012 pp_filter_deps="gpl postproc"
2013 removelogo_filter_deps="avcodec avformat swscale"
2014 scale_filter_deps="swscale"
2015 smartblur_filter_deps="gpl swscale"
2016 showspectrum_filter_deps="avcodec rdft"
2017 subtitles_filter_deps="avformat avcodec libass"
2018 super2xsai_filter_deps="gpl"
2019 tinterlace_filter_deps="gpl"
2020 yadif_filter_deps="gpl"
2021 pixfmts_super2xsai_test_deps="super2xsai_filter"
2022 tinterlace_merge_test_deps="tinterlace_filter"
2023 tinterlace_pad_test_deps="tinterlace_filter"
2024
2025 # libraries
2026 avcodec_deps="avutil"
2027 avdevice_deps="avutil avcodec avformat"
2028 avfilter_deps="avutil"
2029 avformat_deps="avutil avcodec"
2030 avresample_deps="avutil"
2031 postproc_deps="avutil gpl"
2032 swscale_deps="avutil"
2033
2034 # programs
2035 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2036 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2037                setpts_filter null_filter anull_filter ffabuffersink_filter"
2038 ffplay_deps="avcodec avformat swscale swresample sdl"
2039 ffplay_select="ffbuffersink_filter rdft crop_filter"
2040 ffprobe_deps="avcodec avformat"
2041 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2042 ffserver_extralibs='$ldl'
2043
2044 # documentation
2045 podpages_deps="perl"
2046 manpages_deps="perl pod2man"
2047 htmlpages_deps="texi2html"
2048 txtpages_deps="makeinfo"
2049 doc_deps_any="manpages htmlpages podpages txtpages"
2050
2051 # default parameters
2052
2053 logfile="config.log"
2054
2055 # installation paths
2056 prefix_default="/usr/local"
2057 bindir_default='${prefix}/bin'
2058 datadir_default='${prefix}/share/ffmpeg'
2059 incdir_default='${prefix}/include'
2060 libdir_default='${prefix}/lib'
2061 mandir_default='${prefix}/share/man'
2062 shlibdir_default="$libdir_default"
2063
2064 # toolchain
2065 ar_default="ar"
2066 cc_default="gcc"
2067 cxx_default="g++"
2068 host_cc_default="gcc"
2069 cp_f="cp -f"
2070 install="install"
2071 ln_s="ln -sf"
2072 nm_default="nm -g"
2073 objformat="elf"
2074 pkg_config_default=pkg-config
2075 ranlib="ranlib"
2076 strip_default="strip"
2077 yasmexe_default="yasm"
2078
2079 nogas=":"
2080
2081 # machine
2082 arch_default=$(uname -m)
2083 cpu="generic"
2084
2085 # OS
2086 target_os_default=$(tolower $(uname -s))
2087 host_os=$target_os_default
2088
2089 # configurable options
2090 enable $PROGRAM_LIST
2091 enable $DOCUMENT_LIST
2092 enable $(filter_out avresample $LIBRARY_LIST)
2093 enable stripping
2094
2095 enable asm
2096 enable debug
2097 enable doc
2098 enable optimizations
2099 enable runtime_cpudetect
2100 enable safe_bitstream_reader
2101 enable static
2102 enable swscale_alpha
2103
2104 # build settings
2105 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2106 FFSERVERLDFLAGS=-Wl,-E
2107 LIBPREF="lib"
2108 LIBSUF=".a"
2109 FULLNAME='$(NAME)$(BUILDSUF)'
2110 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2111 SLIBPREF="lib"
2112 SLIBSUF=".so"
2113 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2114 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2115 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2116 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2117 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2118 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2119
2120 asflags_filter=echo
2121 cflags_filter=echo
2122 ldflags_filter=echo
2123
2124 AS_C='-c'
2125 AS_O='-o $@'
2126 CC_C='-c'
2127 CC_E='-E -o $@'
2128 CC_O='-o $@'
2129 CXX_C='-c'
2130 CXX_O='-o $@'
2131 LD_O='-o $@'
2132 LD_LIB='-l%'
2133 LD_PATH='-L'
2134 HOSTCC_C='-c'
2135 HOSTCC_O='-o $@'
2136 HOSTLD_O='-o $@'
2137
2138 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
2139 host_libs='-lm'
2140 host_cflags_filter=echo
2141 host_ldflags_filter=echo
2142
2143 target_path='$(CURDIR)'
2144
2145 # since the object filename is not given with the -MM flag, the compiler
2146 # is only able to print the basename, and we must add the path ourselves
2147 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2148 DEPFLAGS='-MM'
2149
2150 # find source path
2151 if test -f configure; then
2152     source_path=.
2153 else
2154     source_path=$(cd $(dirname "$0"); pwd)
2155     echo "$source_path" | grep -q '[[:blank:]]' &&
2156         die "Out of tree builds are impossible with whitespace in source path."
2157     test -e "$source_path/config.h" &&
2158         die "Out of tree builds are impossible with config.h in source dir."
2159 fi
2160
2161 for v in "$@"; do
2162     r=${v#*=}
2163     l=${v%"$r"}
2164     r=$(sh_quote "$r")
2165     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2166 done
2167
2168 find_things(){
2169     thing=$1
2170     pattern=$2
2171     file=$source_path/$3
2172     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2173 }
2174
2175 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2176 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2177 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2178 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2179 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2180 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2181 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2182 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2183 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2184 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2185 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2186
2187 ALL_COMPONENTS="
2188     $BSF_LIST
2189     $DECODER_LIST
2190     $DEMUXER_LIST
2191     $ENCODER_LIST
2192     $FILTER_LIST
2193     $HWACCEL_LIST
2194     $INDEV_LIST
2195     $MUXER_LIST
2196     $OUTDEV_LIST
2197     $PARSER_LIST
2198     $PROTOCOL_LIST
2199 "
2200
2201 for n in $COMPONENT_LIST; do
2202     v=$(toupper ${n%s})_LIST
2203     eval enable \$$v
2204     eval ${n}_if_any="\$$v"
2205 done
2206
2207 enable $ARCH_EXT_LIST
2208
2209 die_unknown(){
2210     echo "Unknown option \"$1\"."
2211     echo "See $0 --help for available options."
2212     exit 1
2213 }
2214
2215 show_list() {
2216     suffix=_$1
2217     shift
2218     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
2219     exit 0
2220 }
2221
2222 rand_list(){
2223     IFS=', '
2224     set -- $*
2225     unset IFS
2226     for thing; do
2227         comp=${thing%:*}
2228         prob=${thing#$comp}
2229         prob=${prob#:}
2230         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2231         echo "prob ${prob:-0.5}"
2232         printf '%s\n' $comp
2233     done
2234 }
2235
2236 do_random(){
2237     action=$1
2238     shift
2239     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2240     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2241 }
2242
2243 for opt do
2244     optval="${opt#*=}"
2245     case "$opt" in
2246         --extra-ldflags=*)
2247             add_ldflags $optval
2248         ;;
2249         --extra-libs=*)
2250             add_extralibs $optval
2251         ;;
2252         --disable-devices)
2253             disable $INDEV_LIST $OUTDEV_LIST
2254         ;;
2255         --enable-debug=*)
2256             debuglevel="$optval"
2257         ;;
2258         --disable-programs)
2259             disable $PROGRAM_LIST
2260         ;;
2261         --disable-everything)
2262             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2263         ;;
2264         --disable-all)
2265             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2266             disable $LIBRARY_LIST $PROGRAM_LIST doc
2267         ;;
2268         --enable-random|--disable-random)
2269             action=${opt%%-random}
2270             do_random ${action#--} $COMPONENT_LIST
2271         ;;
2272         --enable-random=*|--disable-random=*)
2273             action=${opt%%-random=*}
2274             do_random ${action#--} $optval
2275         ;;
2276         --enable-*=*|--disable-*=*)
2277             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2278             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2279             eval list=\$$(toupper $thing)_LIST
2280             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2281             list=$(filter "$name" $list)
2282             [ "$list" = "" ] && warn "Option $opt did not match anything"
2283             $action $list
2284         ;;
2285         --enable-?*|--disable-?*)
2286             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2287             if is_in $option $COMPONENT_LIST; then
2288                 test $action = disable && action=unset
2289                 eval $action \$$(toupper ${option%s})_LIST
2290             elif is_in $option $CMDLINE_SELECT; then
2291                 $action $option
2292             else
2293                 die_unknown $opt
2294             fi
2295         ;;
2296         --list-*)
2297             NAME="${opt#--list-}"
2298             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2299             NAME=${NAME%s}
2300             eval show_list $NAME \$$(toupper $NAME)_LIST
2301         ;;
2302         --help|-h) show_help
2303         ;;
2304         --fatal-warnings) enable fatal_warnings
2305         ;;
2306         *)
2307             optname="${opt%%=*}"
2308             optname="${optname#--}"
2309             optname=$(echo "$optname" | sed 's/-/_/g')
2310             if is_in $optname $CMDLINE_SET; then
2311                 eval $optname='$optval'
2312             elif is_in $optname $CMDLINE_APPEND; then
2313                 append $optname "$optval"
2314             else
2315                 die_unknown $opt
2316             fi
2317         ;;
2318     esac
2319 done
2320
2321 disabled logging && logfile=/dev/null
2322
2323 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2324 set >> $logfile
2325
2326 test -n "$cross_prefix" && enable cross_compile
2327
2328 if enabled cross_compile; then
2329     test -n "$arch" && test -n "$target_os" ||
2330         die "Must specify target arch and OS when cross-compiling"
2331 fi
2332
2333 ar_default="${cross_prefix}${ar_default}"
2334 cc_default="${cross_prefix}${cc_default}"
2335 cxx_default="${cross_prefix}${cxx_default}"
2336 nm_default="${cross_prefix}${nm_default}"
2337 pkg_config_default="${cross_prefix}${pkg_config_default}"
2338 ranlib="${cross_prefix}${ranlib}"
2339 strip_default="${cross_prefix}${strip_default}"
2340
2341 sysinclude_default="${sysroot}/usr/include"
2342
2343 case "$toolchain" in
2344     clang-asan)
2345         cc_default="clang"
2346         add_cflags  -faddress-sanitizer
2347         add_ldflags -faddress-sanitizer
2348     ;;
2349     clang-tsan)
2350         cc_default="clang"
2351         add_cflags  -fthread-sanitizer
2352         add_ldflags -fthread-sanitizer
2353     ;;
2354     msvc)
2355         cc_default="c99wrap cl"
2356         ld_default="c99wrap link"
2357         nm_default="dumpbin -symbols"
2358         ar_default="lib"
2359         target_os_default="win32"
2360     ;;
2361     ?*)
2362         die "Unknown toolchain $toolchain"
2363     ;;
2364 esac
2365
2366 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2367 enabled cross_compile || host_cc_default=$cc
2368 set_default host_cc
2369
2370 if ! $pkg_config --version >/dev/null 2>&1; then
2371     warn "$pkg_config not found, library detection may fail."
2372     pkg_config=false
2373 fi
2374
2375 exesuf() {
2376     case $1 in
2377         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2378     esac
2379 }
2380
2381 EXESUF=$(exesuf $target_os)
2382 HOSTEXESUF=$(exesuf $host_os)
2383
2384 # set temporary file name
2385 : ${TMPDIR:=$TEMPDIR}
2386 : ${TMPDIR:=$TMP}
2387 : ${TMPDIR:=/tmp}
2388
2389 if ! check_cmd mktemp -u XXXXXX; then
2390     # simple replacement for missing mktemp
2391     # NOT SAFE FOR GENERAL USE
2392     mktemp(){
2393         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2394     }
2395 fi
2396
2397 tmpfile(){
2398     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2399         (set -C; exec > $tmp) 2>/dev/null ||
2400         die "Unable to create temporary file in $TMPDIR."
2401     append TMPFILES $tmp
2402     eval $1=$tmp
2403 }
2404
2405 trap 'rm -f -- $TMPFILES' EXIT
2406
2407 tmpfile TMPASM .asm
2408 tmpfile TMPC   .c
2409 tmpfile TMPCPP .cpp
2410 tmpfile TMPE   $EXESUF
2411 tmpfile TMPH   .h
2412 tmpfile TMPO   .o
2413 tmpfile TMPS   .S
2414 tmpfile TMPSH  .sh
2415 tmpfile TMPV   .ver
2416
2417 unset -f mktemp
2418
2419 chmod +x $TMPE
2420
2421 # make sure we can execute files in $TMPDIR
2422 cat > $TMPSH 2>> $logfile <<EOF
2423 #! /bin/sh
2424 EOF
2425 chmod +x $TMPSH >> $logfile 2>&1
2426 if ! $TMPSH >> $logfile 2>&1; then
2427     cat <<EOF
2428 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2429 variable to another directory and make sure that it is not mounted noexec.
2430 EOF
2431     die "Sanity test failed."
2432 fi
2433
2434 ccc_flags(){
2435     for flag; do
2436         case $flag in
2437             -std=c99)           echo -c99                       ;;
2438             -mcpu=*)            echo -arch ${flag#*=}           ;;
2439             -mieee)             echo -ieee                      ;;
2440             -O*|-fast)          echo $flag                      ;;
2441             -fno-math-errno)    echo -assume nomath_errno       ;;
2442             -g)                 echo -g3                        ;;
2443             -Wall)              echo -msg_enable level2         ;;
2444             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2445             -Wl,*)              echo $flag                      ;;
2446             -f*|-W*)                                            ;;
2447             *)                  echo $flag                      ;;
2448         esac
2449    done
2450 }
2451
2452 msvc_flags(){
2453     for flag; do
2454         case $flag in
2455             -fomit-frame-pointer) echo -Oy ;;
2456             -g)                   echo -Z7 ;;
2457             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2458                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2459                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2460                                        -wd4554 \
2461                                        -wd4996 -wd4273 ;;
2462             -std=c99)             ;;
2463             -fno-math-errno)      ;;
2464             -fno-common)          ;;
2465             -fno-signed-zeros)    ;;
2466             -fPIC)                ;;
2467             -lz)                  echo zlib.lib ;;
2468             -lavifil32)           echo vfw32.lib ;;
2469             -lavicap32)           echo vfw32.lib user32.lib ;;
2470             -l*)                  echo ${flag#-l}.lib ;;
2471             *)                    echo $flag ;;
2472         esac
2473     done
2474 }
2475
2476 pgi_flags(){
2477     for flag; do
2478         case $flag in
2479             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2480             -fomit-frame-pointer) echo -Mnoframe ;;
2481             -g)                   echo -gopt ;;
2482             *)                    echo $flag ;;
2483         esac
2484     done
2485 }
2486
2487 suncc_flags(){
2488     for flag; do
2489         case $flag in
2490             -march=*|-mcpu=*)
2491                 case "${flag#*=}" in
2492                     native)                   echo -xtarget=native       ;;
2493                     v9|niagara)               echo -xarch=sparc          ;;
2494                     ultrasparc)               echo -xarch=sparcvis       ;;
2495                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2496                     i586|pentium)             echo -xchip=pentium        ;;
2497                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2498                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2499                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2500                     pentium4*)          echo -xtarget=pentium4           ;;
2501                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2502                     *-sse3)             echo -xarch=sse3                 ;;
2503                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2504                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2505                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2506                     amdfam10|barcelona)       echo -xtarget=barcelona    ;;
2507                     bdver*)                   echo -xarch=avx            ;;
2508                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2509                     k8|opteron|athlon64|athlon-fx)
2510                                               echo -xarch=sse2a          ;;
2511                     athlon*)                  echo -xarch=pentium_proa   ;;
2512                 esac
2513                 ;;
2514             -std=c99)             echo -xc99              ;;
2515             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2516             -fPIC)                echo -KPIC -xcode=pic32 ;;
2517             -W*,*)                echo $flag              ;;
2518             -f*-*|-W*|-mimpure-text)                      ;;
2519             -shared)              echo -G                 ;;
2520             *)                    echo $flag              ;;
2521         esac
2522     done
2523 }
2524
2525 tms470_flags(){
2526     for flag; do
2527         case $flag in
2528             -march=*|-mcpu=*)
2529                 case "${flag#*=}" in
2530                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2531                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2532                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2533                     armv6*|arm11*)          echo -mv=6   ;;
2534                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2535                                             echo -mv=5e  ;;
2536                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2537                 esac
2538                 ;;
2539             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2540             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2541             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2542             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2543             -msoft-float)   echo --float_support=vfplib       ;;
2544             -O[0-3]|-mf=*)  echo $flag                        ;;
2545             -g)             echo -g -mn                       ;;
2546             -pds=*)         echo $flag                        ;;
2547             -D*|-I*)        echo $flag                        ;;
2548             --gcc|--abi=*)  echo $flag                        ;;
2549             -me)            echo $flag                        ;;
2550         esac
2551     done
2552 }
2553
2554 probe_cc(){
2555     pfx=$1
2556     _cc=$2
2557
2558     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2559     unset _ld_o _ldflags _ld_lib _ld_path
2560     unset _depflags _DEPCMD _DEPFLAGS
2561     _flags_filter=echo
2562
2563     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2564         _type=llvm_gcc
2565         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2566         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2567         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2568         _cflags_speed='-O3'
2569         _cflags_size='-Os'
2570     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2571         _type=gcc
2572         gcc_version=$($_cc --version | head -n1)
2573         gcc_basever=$($_cc -dumpversion)
2574         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2575         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2576         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2577         if ! $_cc -dumpversion | grep -q '^2\.'; then
2578             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2579         fi
2580         _cflags_speed='-O3'
2581         _cflags_size='-Os'
2582     elif $_cc --version 2>/dev/null | grep -q Intel; then
2583         _type=icc
2584         _ident=$($_cc --version | head -n1)
2585         _depflags='-MMD'
2586         _cflags_speed='-O3'
2587         _cflags_size='-Os'
2588         _cflags_noopt='-O1'
2589     elif $_cc -v 2>&1 | grep -q xlc; then
2590         _type=xlc
2591         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2592         _cflags_speed='-O5'
2593         _cflags_size='-O5 -qcompact'
2594     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2595         _type=ccc
2596         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2597         _DEPFLAGS='-M'
2598         _cflags_speed='-fast'
2599         _cflags_size='-O1'
2600         _flags_filter=ccc_flags
2601     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2602         test -d "$sysroot" || die "No valid sysroot specified."
2603         _type=armcc
2604         _ident=$($_cc --vsn | head -n1)
2605         armcc_conf="$PWD/armcc.conf"
2606         $_cc --arm_linux_configure                 \
2607              --arm_linux_config_file="$armcc_conf" \
2608              --configure_sysroot="$sysroot"        \
2609              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2610              die "Error creating armcc configuration file."
2611         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2612         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2613         as_default="${cross_prefix}gcc"
2614         _depflags='-MMD'
2615         _cflags_speed='-O3'
2616         _cflags_size='-Os'
2617     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2618         _type=tms470
2619         _ident=$($_cc -version | head -n1 | tr -s ' ')
2620         _flags='--gcc --abi=eabi -me'
2621         _cc_e='-ppl -fe=$@'
2622         _cc_o='-fe=$@'
2623         _depflags='-ppa -ppd=$(@:.o=.d)'
2624         _cflags_speed='-O3 -mf=5'
2625         _cflags_size='-O3 -mf=2'
2626         _flags_filter=tms470_flags
2627     elif $_cc -v 2>&1 | grep -q clang; then
2628         _type=clang
2629         _ident=$($_cc --version | head -n1)
2630         _depflags='-MMD'
2631         _cflags_speed='-O3'
2632         _cflags_size='-Os'
2633     elif $_cc -V 2>&1 | grep -q Sun; then
2634         _type=suncc
2635         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2636         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2637         _DEPFLAGS='-xM1 -xc99'
2638         _ldflags='-std=c99'
2639         _cflags_speed='-O5'
2640         _cflags_size='-O5 -xspace'
2641         _flags_filter=suncc_flags
2642     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2643         _type=pathscale
2644         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2645         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2646         _cflags_speed='-O2'
2647         _cflags_size='-Os'
2648         _flags_filter='filter_out -Wdisabled-optimization'
2649     elif $_cc -v 2>&1 | grep -q Open64; then
2650         _type=open64
2651         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2652         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2653         _cflags_speed='-O2'
2654         _cflags_size='-Os'
2655         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2656     elif $_cc -V 2>&1 | grep -q Portland; then
2657         _type=pgi
2658         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2659         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2660         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2661         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2662         _cflags_noopt="-O1"
2663         _flags_filter=pgi_flags
2664     elif $_cc 2>&1 | grep -q Microsoft; then
2665         _type=msvc
2666         _ident=$($cc 2>&1 | head -n1)
2667         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2668         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2669         _cflags_speed="-O2"
2670         _cflags_size="-O1"
2671         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2672         if $_cc 2>&1 | grep -q Linker; then
2673             _ld_o='-out $@'
2674         else
2675             _ld_o='-Fe$@'
2676         fi
2677         _cc_o='-Fo $@'
2678         _cc_e='-P -Fi $@'
2679         _flags_filter=msvc_flags
2680         _ld_lib='lib%.a'
2681         _ld_path='-libpath:'
2682         _flags='-nologo'
2683         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2684         if [ $pfx = hostcc ]; then
2685             append _cflags -Dsnprintf=_snprintf
2686         fi
2687         disable stripping
2688     fi
2689
2690     eval ${pfx}_type=\$_type
2691     eval ${pfx}_ident=\$_ident
2692 }
2693
2694 set_ccvars(){
2695     eval ${1}_C=\${_cc_c-\${${1}_C}}
2696     eval ${1}_E=\${_cc_e-\${${1}_E}}
2697     eval ${1}_O=\${_cc_o-\${${1}_O}}
2698
2699     if [ -n "$_depflags" ]; then
2700         eval ${1}_DEPFLAGS=\$_depflags
2701     else
2702         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2703         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2704         eval DEP${1}FLAGS=\$_flags
2705     fi
2706 }
2707
2708 probe_cc cc "$cc"
2709 cflags_filter=$_flags_filter
2710 cflags_speed=$_cflags_speed
2711 cflags_size=$_cflags_size
2712 cflags_noopt=$_cflags_noopt
2713 add_cflags $_flags $_cflags
2714 cc_ldflags=$_ldflags
2715 set_ccvars CC
2716
2717 probe_cc hostcc "$host_cc"
2718 host_cflags_filter=$_flags_filter
2719 add_host_cflags  $_flags $_cflags
2720 set_ccvars HOSTCC
2721
2722 test -n "$cc_type" && enable $cc_type ||
2723     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2724
2725 : ${as_default:=$cc}
2726 : ${dep_cc_default:=$cc}
2727 : ${ld_default:=$cc}
2728 : ${host_ld_default:=$host_cc}
2729 set_default ar as dep_cc ld host_ld
2730
2731 probe_cc as "$as"
2732 asflags_filter=$_flags_filter
2733 add_asflags $_flags $_cflags
2734 set_ccvars AS
2735
2736 probe_cc ld "$ld"
2737 ldflags_filter=$_flags_filter
2738 add_ldflags $_flags $_ldflags
2739 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2740 LD_O=${_ld_o-$LD_O}
2741 LD_LIB=${_ld_lib-$LD_LIB}
2742 LD_PATH=${_ld_path-$LD_PATH}
2743
2744 probe_cc hostld "$host_ld"
2745 host_ldflags_filter=$_flags_filter
2746 add_host_ldflags $_flags $_ldflags
2747 HOSTLD_O=${_ld_o-$HOSTLD_O}
2748
2749 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2750     probe_cc depcc "$dep_cc"
2751     CCDEP=${_DEPCMD:-$DEPCMD}
2752     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2753     DEPCCFLAGS=$_flags
2754 fi
2755
2756 if $ar 2>&1 | grep -q Microsoft; then
2757     arflags="-nologo"
2758     ar_o='-out:$@'
2759 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2760     arflags="rq"
2761     ar_o='$@'
2762 else
2763     arflags="rc"
2764     ar_o='$@'
2765 fi
2766
2767 add_cflags $extra_cflags
2768 add_cxxflags $extra_cxxflags
2769 add_asflags $extra_cflags
2770
2771 if test -n "$sysroot"; then
2772     case "$cc_type" in
2773         gcc|llvm_gcc|clang)
2774             add_cppflags --sysroot="$sysroot"
2775             add_ldflags --sysroot="$sysroot"
2776         ;;
2777         tms470)
2778             add_cppflags -I"$sysinclude"
2779             add_ldflags  --sysroot="$sysroot"
2780         ;;
2781     esac
2782 fi
2783
2784 if test "$cpu" = host; then
2785     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2786
2787     case "$cc_type" in
2788         gcc|llvm_gcc)
2789             check_native(){
2790                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2791                 sed -n "/cc1.*$1=/{
2792                             s/.*$1=\\([^ ]*\\).*/\\1/
2793                             p
2794                             q
2795                         }" $TMPE
2796             }
2797             cpu=$(check_native -march || check_native -mcpu)
2798         ;;
2799     esac
2800
2801     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2802 fi
2803
2804 # Deal with common $arch aliases
2805 case "$arch" in
2806     aarch64|arm64)
2807         arch="aarch64"
2808     ;;
2809     arm*|iPad*)
2810         arch="arm"
2811     ;;
2812     mips*|IP*)
2813         arch="mips"
2814     ;;
2815     parisc*|hppa*)
2816         arch="parisc"
2817     ;;
2818     "Power Macintosh"|ppc*|powerpc*)
2819         arch="ppc"
2820     ;;
2821     s390|s390x)
2822         arch="s390"
2823     ;;
2824     sh4|sh)
2825         arch="sh4"
2826     ;;
2827     sun4u|sparc*)
2828         arch="sparc"
2829     ;;
2830     tilegx|tile-gx)
2831         arch="tilegx"
2832     ;;
2833     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2834         arch="x86"
2835     ;;
2836 esac
2837
2838 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2839 enable $arch
2840
2841 # Add processor-specific flags
2842 if enabled aarch64; then
2843
2844     case $cpu in
2845         armv*)
2846             cpuflags="-march=$cpu"
2847         ;;
2848         *)
2849             cpuflags="-mcpu=$cpu"
2850         ;;
2851     esac
2852
2853 elif enabled alpha; then
2854
2855     cpuflags="-mcpu=$cpu"
2856
2857 elif enabled arm; then
2858
2859     check_arm_arch() {
2860         check_cpp_condition stddef.h \
2861             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2862             $cpuflags
2863     }
2864
2865     probe_arm_arch() {
2866         if   check_arm_arch 4;        then echo armv4;
2867         elif check_arm_arch 4T;       then echo armv4t;
2868         elif check_arm_arch 5;        then echo armv5;
2869         elif check_arm_arch 5E;       then echo armv5e;
2870         elif check_arm_arch 5T;       then echo armv5t;
2871         elif check_arm_arch 5TE;      then echo armv5te;
2872         elif check_arm_arch 5TEJ;     then echo armv5te;
2873         elif check_arm_arch 6;        then echo armv6;
2874         elif check_arm_arch 6J;       then echo armv6j;
2875         elif check_arm_arch 6K;       then echo armv6k;
2876         elif check_arm_arch 6Z;       then echo armv6z;
2877         elif check_arm_arch 6ZK;      then echo armv6zk;
2878         elif check_arm_arch 6T2;      then echo armv6t2;
2879         elif check_arm_arch 7;        then echo armv7;
2880         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2881         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2882         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2883         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2884         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2885         fi
2886     }
2887
2888     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2889
2890     case $cpu in
2891         armv*)
2892             cpuflags="-march=$cpu"
2893             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2894         ;;
2895         *)
2896             cpuflags="-mcpu=$cpu"
2897             case $cpu in
2898                 cortex-a*)                               subarch=armv7a  ;;
2899                 cortex-r*)                               subarch=armv7r  ;;
2900                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2901                 arm11*)                                  subarch=armv6   ;;
2902                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2903                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2904                 *)                             subarch=$(probe_arm_arch) ;;
2905             esac
2906         ;;
2907     esac
2908
2909     case "$subarch" in
2910         armv5t*)    enable fast_clz                ;;
2911         armv[6-8]*) enable fast_clz fast_unaligned ;;
2912     esac
2913
2914 elif enabled avr32; then
2915
2916     case $cpu in
2917         ap7[02]0[0-2])
2918             subarch="avr32_ap"
2919             cpuflags="-mpart=$cpu"
2920         ;;
2921         ap)
2922             subarch="avr32_ap"
2923             cpuflags="-march=$cpu"
2924         ;;
2925         uc3[ab]*)
2926             subarch="avr32_uc"
2927             cpuflags="-mcpu=$cpu"
2928         ;;
2929         uc)
2930             subarch="avr32_uc"
2931             cpuflags="-march=$cpu"
2932         ;;
2933     esac
2934
2935 elif enabled bfin; then
2936
2937     cpuflags="-mcpu=$cpu"
2938
2939 elif enabled mips; then
2940
2941     cpuflags="-march=$cpu"
2942
2943     case $cpu in
2944         24kc)
2945             disable mipsfpu
2946             disable mipsdspr1
2947             disable mipsdspr2
2948         ;;
2949         24kf*)
2950             disable mipsdspr1
2951             disable mipsdspr2
2952         ;;
2953         24kec|34kc|1004kc)
2954             disable mipsfpu
2955             disable mipsdspr2
2956         ;;
2957         24kef*|34kf*|1004kf*)
2958             disable mipsdspr2
2959         ;;
2960         74kc)
2961             disable mipsfpu
2962         ;;
2963     esac
2964
2965 elif enabled ppc; then
2966
2967     case $(tolower $cpu) in
2968         601|ppc601|powerpc601)
2969             cpuflags="-mcpu=601"
2970             disable altivec
2971         ;;
2972         603*|ppc603*|powerpc603*)
2973             cpuflags="-mcpu=603"
2974             disable altivec
2975         ;;
2976         604*|ppc604*|powerpc604*)
2977             cpuflags="-mcpu=604"
2978             disable altivec
2979         ;;
2980         g3|75*|ppc75*|powerpc75*)
2981             cpuflags="-mcpu=750"
2982             disable altivec
2983         ;;
2984         g4|745*|ppc745*|powerpc745*)
2985             cpuflags="-mcpu=7450"
2986         ;;
2987         74*|ppc74*|powerpc74*)
2988             cpuflags="-mcpu=7400"
2989         ;;
2990         g5|970|ppc970|powerpc970)
2991             cpuflags="-mcpu=970"
2992         ;;
2993         power[3-7]*)
2994             cpuflags="-mcpu=$cpu"
2995         ;;
2996         cell)
2997             cpuflags="-mcpu=cell"
2998             enable ldbrx
2999         ;;
3000         e500mc)
3001             cpuflags="-mcpu=e500mc"
3002             disable altivec
3003         ;;
3004         e500v2)
3005             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3006             disable altivec
3007         ;;
3008         e500)
3009             cpuflags="-mcpu=8540 -mhard-float"
3010             disable altivec
3011         ;;
3012     esac
3013
3014 elif enabled sparc; then
3015
3016     case $cpu in
3017         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3018             cpuflags="-mcpu=$cpu"
3019             disable vis
3020         ;;
3021         ultrasparc*|niagara[234])
3022             cpuflags="-mcpu=$cpu"
3023         ;;
3024     esac
3025
3026 elif enabled x86; then
3027
3028     case $cpu in
3029         i[345]86|pentium)
3030             cpuflags="-march=$cpu"
3031             disable mmx
3032         ;;
3033         # targets that do NOT support conditional mov (cmov)
3034         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3035             cpuflags="-march=$cpu"
3036             disable cmov
3037         ;;
3038         # targets that do support conditional mov (cmov)
3039         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3040             cpuflags="-march=$cpu"
3041             enable cmov
3042             enable fast_cmov
3043         ;;
3044         # targets that do support conditional mov but on which it's slow
3045         pentium4|pentium4m|prescott|nocona)
3046             cpuflags="-march=$cpu"
3047             enable cmov
3048             disable fast_cmov
3049         ;;
3050     esac
3051
3052 fi
3053
3054 if [ "$cpu" != generic ]; then
3055     add_cflags  $cpuflags
3056     add_asflags $cpuflags
3057 fi
3058
3059 # compiler sanity check
3060 check_exec <<EOF
3061 int main(void){ return 0; }
3062 EOF
3063 if test "$?" != 0; then
3064     echo "$cc is unable to create an executable file."
3065     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3066         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3067         echo "Only do this if you know what cross compiling means."
3068     fi
3069     die "C compiler test failed."
3070 fi
3071
3072 add_cppflags -D_ISOC99_SOURCE
3073 add_cxxflags -D__STDC_CONSTANT_MACROS
3074 check_cflags -std=c99
3075 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3076 #include <stdlib.h>
3077 EOF
3078 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3079 #include <stdlib.h>
3080 EOF
3081
3082 check_host_cflags -std=c99
3083 check_host_cflags -Wall
3084
3085 check_64bit(){
3086     arch32=$1
3087     arch64=$2
3088     expr=$3
3089     check_code cc "" "int test[2*($expr) - 1]" &&
3090         subarch=$arch64 || subarch=$arch32
3091 }
3092
3093 case "$arch" in
3094     aarch64|alpha|ia64)
3095         spic=$shared
3096     ;;
3097     mips)
3098         check_64bit mips mips64 '_MIPS_SIM > 1'
3099         spic=$shared
3100     ;;
3101     parisc)
3102         check_64bit parisc parisc64 'sizeof(void *) > 4'
3103         spic=$shared
3104     ;;
3105     ppc)
3106         check_64bit ppc ppc64 'sizeof(void *) > 4'
3107         spic=$shared
3108     ;;
3109     sparc)
3110         check_64bit sparc sparc64 'sizeof(void *) > 4'
3111         spic=$shared
3112     ;;
3113     x86)
3114         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3115         if test "$subarch" = "x86_64"; then
3116             spic=$shared
3117         fi
3118     ;;
3119     ppc)
3120         check_cc <<EOF && subarch="ppc64"
3121         int test[(int)sizeof(char*) - 7];
3122 EOF
3123     ;;
3124 esac
3125
3126 enable $subarch
3127 enabled spic && enable pic
3128
3129 # OS specific
3130 case $target_os in
3131     haiku)
3132         prefix_default="/boot/common"
3133         network_extralibs="-lnetwork"
3134         host_libs=
3135         ;;
3136     sunos)
3137         FFSERVERLDFLAGS=""
3138         SHFLAGS='-shared -Wl,-h,$$(@F)'
3139         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3140         network_extralibs="-lsocket -lnsl"
3141         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3142         # When using suncc to build, the Solaris linker will mark
3143         # an executable with each instruction set encountered by
3144         # the Solaris assembler.  As our libraries contain their own
3145         # guards for processor-specific code, instead suppress
3146         # generation of the HWCAPS ELF section on Solaris x86 only.
3147         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3148         nm_default='nm -P -g'
3149         ;;
3150     netbsd)
3151         disable symver
3152         oss_indev_extralibs="-lossaudio"
3153         oss_outdev_extralibs="-lossaudio"
3154         enabled gcc || check_ldflags -Wl,-zmuldefs
3155         ;;
3156     openbsd|bitrig)
3157         disable symver
3158         SHFLAGS='-shared'
3159         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
3160         SLIB_INSTALL_LINKS=
3161         oss_indev_extralibs="-lossaudio"
3162         oss_outdev_extralibs="-lossaudio"
3163         ;;
3164     dragonfly)
3165         disable symver
3166         ;;
3167     freebsd)
3168         ;;
3169     bsd/os)
3170         add_extralibs -lpoll -lgnugetopt
3171         strip="strip -d"
3172         ;;
3173     darwin)
3174         gas="gas-preprocessor.pl $cc"
3175         enabled ppc && add_asflags -force_cpusubtype_ALL
3176         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3177         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3178         strip="${strip} -x"
3179         add_ldflags -Wl,-dynamic,-search_paths_first
3180         SLIBSUF=".dylib"
3181         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3182         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3183         FFSERVERLDFLAGS=-Wl,-bind_at_load
3184         objformat="macho"
3185         enabled x86_64 && objformat="macho64"
3186         enabled_any pic shared ||
3187             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3188         ;;
3189     mingw32*)
3190         if test $target_os = "mingw32ce"; then
3191             disable network
3192         else
3193             target_os=mingw32
3194         fi
3195         LIBTARGET=i386
3196         if enabled x86_64; then
3197             LIBTARGET="i386:x86-64"
3198         elif enabled arm; then
3199             LIBTARGET=arm-wince
3200         fi
3201         shlibdir_default="$bindir_default"
3202         SLIBPREF=""
3203         SLIBSUF=".dll"
3204         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3205         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3206         dlltool="${cross_prefix}dlltool"
3207         if check_cmd lib.exe -list; then
3208             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3209             if enabled x86_64; then
3210                 LIBTARGET=x64
3211             fi
3212         elif check_cmd $dlltool --version; then
3213             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3214         fi
3215         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3216         SLIB_INSTALL_LINKS=
3217         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3218         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3219         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3220         objformat="win32"
3221         ranlib=:
3222         enable dos_paths
3223         add_cppflags -U__STRICT_ANSI__
3224         ;;
3225     win32|win64)
3226         if enabled shared; then
3227             # Link to the import library instead of the normal static library
3228             # for shared libs.
3229             LD_LIB='%.lib'
3230             # Cannot build shared and static libraries at the same time with
3231             # MSVC.
3232             disable static
3233         fi
3234         shlibdir_default="$bindir_default"
3235         SLIBPREF=""
3236         SLIBSUF=".dll"
3237         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3238         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3239         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3240         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3241         SLIB_INSTALL_LINKS=
3242         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3243         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3244         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3245         objformat="win32"
3246         ranlib=:
3247         enable dos_paths
3248         ;;
3249     cygwin*)
3250         target_os=cygwin
3251         shlibdir_default="$bindir_default"
3252         SLIBPREF="cyg"
3253         SLIBSUF=".dll"
3254         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3255         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3256         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3257         SLIB_INSTALL_LINKS=
3258         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3259         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3260         objformat="win32"
3261         enable dos_paths
3262         ;;
3263     *-dos|freedos|opendos)
3264         network_extralibs="-lsocket"
3265         objformat="coff"
3266         enable dos_paths
3267         add_cppflags -U__STRICT_ANSI__
3268         ;;
3269     linux)
3270         enable dv1394
3271         ;;
3272     irix*)
3273         target_os=irix
3274         ranlib="echo ignoring ranlib"
3275         ;;
3276     os/2*)
3277         strip="lxlite -CS"
3278         ln_s="cp -f"
3279         objformat="aout"
3280         add_cppflags -D_GNU_SOURCE
3281         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3282         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3283         FFSERVERLDFLAGS=""
3284         LIBSUF="_s.a"
3285         SLIBPREF=""
3286         SLIBSUF=".dll"
3287         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3288         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3289         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3290             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3291             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3292             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3293             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3294             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3295         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3296             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3297         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3298         enable dos_paths
3299         enable_weak os2threads
3300         ;;
3301     gnu/kfreebsd)
3302         add_cppflags -D_BSD_SOURCE
3303         ;;
3304     gnu)
3305         ;;
3306     qnx)
3307         add_cppflags -D_QNX_SOURCE
3308         network_extralibs="-lsocket"
3309         ;;
3310     symbian)
3311         SLIBSUF=".dll"
3312         enable dos_paths
3313         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3314         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3315         add_ldflags -Wl,--target1-abs,--no-undefined \
3316                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3317                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3318         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3319                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3320                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3321         ;;
3322     osf1)
3323         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3324         FFSERVERLDFLAGS=
3325         ;;
3326     minix)
3327         ;;
3328     plan9)
3329         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3330                      -D_REENTRANT_SOURCE        \
3331                      -D_RESEARCH_SOURCE         \
3332                      -DFD_SETSIZE=96            \
3333                      -DHAVE_SOCK_OPTS
3334         add_compat strtod.o strtod=avpriv_strtod
3335         network_extralibs='-lbsd'
3336         exeobjs=compat/plan9/main.o
3337         disable ffserver
3338         ln_s='ln -s -f'
3339         cp_f='cp'
3340         ;;
3341     none)
3342         ;;
3343     *)
3344         die "Unknown OS '$target_os'."
3345         ;;
3346 esac
3347
3348 # determine libc flavour
3349
3350 if check_cpp_condition features.h "defined __UCLIBC__"; then
3351     libc_type=uclibc
3352     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3353 elif check_cpp_condition features.h "defined __GLIBC__"; then
3354     libc_type=glibc
3355     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3356 elif check_header _mingw.h; then
3357     libc_type=mingw
3358     check_cpp_condition _mingw.h \
3359         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3360             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3361         die "ERROR: MinGW runtime version must be >= 3.15."
3362     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3363             __MINGW64_VERSION_MAJOR < 3"; then
3364         add_compat msvcrt/snprintf.o
3365         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3366     fi
3367 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3368     libc_type=newlib
3369     add_cppflags -U__STRICT_ANSI__
3370 elif check_func_headers stdlib.h _get_doserrno; then
3371     libc_type=msvcrt
3372     add_compat strtod.o strtod=avpriv_strtod
3373     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3374                                  _snprintf=avpriv_snprintf  \
3375                                  vsnprintf=avpriv_vsnprintf
3376 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3377     libc_type=klibc
3378 fi
3379
3380 test -n "$libc_type" && enable $libc_type
3381
3382 # hacks for compiler/libc/os combinations
3383
3384 if enabled_all tms470 glibc; then
3385     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3386     add_cppflags -D__USER_LABEL_PREFIX__=
3387     add_cppflags -D__builtin_memset=memset
3388     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3389     add_cflags   -pds=48    # incompatible redefinition of macro
3390 fi
3391
3392 if enabled_all ccc glibc; then
3393     add_ldflags -Wl,-z,now  # calls to libots crash without this
3394 fi
3395
3396 esc(){
3397     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3398 }
3399
3400 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3401
3402 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3403
3404 set_default $PATHS_LIST
3405 set_default nm
3406
3407 # we need to build at least one lib type
3408 if ! enabled_any static shared; then
3409     cat <<EOF
3410 At least one library type must be built.
3411 Specify --enable-static to build the static libraries or --enable-shared to
3412 build the shared libraries as well. To only build the shared libraries specify
3413 --disable-static in addition to --enable-shared.
3414 EOF
3415     exit 1;
3416 fi
3417
3418 die_license_disabled() {
3419     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3420 }
3421
3422 die_license_disabled_gpl() {
3423     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3424 }
3425
3426 die_license_disabled gpl libcdio
3427 die_license_disabled gpl libutvideo
3428 die_license_disabled gpl libx264
3429 die_license_disabled gpl libxavs
3430 die_license_disabled gpl libxvid
3431 die_license_disabled gpl x11grab
3432
3433 die_license_disabled nonfree libaacplus
3434 die_license_disabled nonfree libfaac
3435 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3436 enabled gpl && die_license_disabled_gpl nonfree openssl
3437
3438 die_license_disabled version3 libopencore_amrnb
3439 die_license_disabled version3 libopencore_amrwb
3440 die_license_disabled version3 libvo_aacenc
3441 die_license_disabled version3 libvo_amrwbenc
3442
3443 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3444
3445 disabled optimizations || check_cflags -fomit-frame-pointer
3446
3447 enable_pic() {
3448     enable pic
3449     add_cppflags -DPIC
3450     add_cflags   -fPIC
3451     add_asflags  -fPIC
3452 }
3453
3454 enabled pic && enable_pic
3455
3456 check_cc <<EOF || die "Symbol mangling check failed."
3457 int ff_extern;
3458 EOF
3459 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3460 extern_prefix=${sym%%ff_extern*}
3461
3462 check_cc <<EOF && enable_weak inline_asm
3463 void foo(void) { __asm__ volatile ("" ::); }
3464 EOF
3465
3466 _restrict=
3467 for restrict_keyword in restrict __restrict__ __restrict; do
3468     check_cc <<EOF && _restrict=$restrict_keyword && break
3469 void foo(char * $restrict_keyword p);
3470 EOF
3471 done
3472
3473 check_cc <<EOF && enable attribute_packed
3474 struct { int x; } __attribute__((packed)) x;
3475 EOF
3476
3477 check_cc <<EOF && enable attribute_may_alias
3478 union { int x; } __attribute__((may_alias)) x;
3479 EOF
3480
3481 check_cc <<EOF || die "endian test failed"
3482 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3483 EOF
3484 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3485
3486 if enabled alpha; then
3487
3488     check_cflags -mieee
3489
3490 elif enabled arm; then
3491
3492     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3493 float func(float a, float b){ return a+b; }
3494 EOF
3495
3496     enabled thumb && check_cflags -mthumb || check_cflags -marm
3497     nogas=die
3498
3499     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3500         enable vfp_args
3501     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3502         case "${cross_prefix:-$cc}" in
3503             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3504             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3505 __asm__ (".eabi_attribute 28, 1");
3506 int main(void) { return 0; }
3507 EOF
3508         esac
3509         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3510     fi
3511
3512     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3513     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3514     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3515     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3516     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3517     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3518
3519     [ $target_os = linux ] ||
3520         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3521             $ARCH_EXT_LIST_ARM
3522
3523     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3524     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3525
3526     enabled_all armv6t2 shared !pic && enable_pic
3527
3528 elif enabled mips; then
3529
3530     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3531     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3532      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3533     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3534      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3535     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3536      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3537     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3538      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3539
3540 elif enabled parisc; then
3541
3542     if enabled gcc; then
3543         case $($cc -dumpversion) in
3544             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3545         esac
3546     fi
3547
3548 elif enabled ppc; then
3549
3550     enable local_aligned_8 local_aligned_16
3551
3552     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3553     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3554     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3555     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3556
3557     # AltiVec flags: The FSF version of GCC differs from the Apple version
3558     if enabled altivec; then
3559         nogas=warn
3560         check_cflags -maltivec -mabi=altivec &&
3561         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3562         check_cflags -faltivec
3563
3564         # check if our compiler supports Motorola AltiVec C API
3565         check_cc <<EOF || disable altivec
3566 $inc_altivec_h
3567 int main(void) {
3568     vector signed int v1 = (vector signed int) { 0 };
3569     vector signed int v2 = (vector signed int) { 1 };
3570     v1 = vec_add(v1, v2);
3571     return 0;
3572 }
3573 EOF
3574
3575         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3576     fi
3577
3578 elif enabled sparc; then
3579
3580     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3581
3582 elif enabled x86; then
3583
3584     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3585
3586     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3587
3588     enable local_aligned_8 local_aligned_16
3589
3590     # check whether EBP is available on x86
3591     # As 'i' is stored on the stack, this program will crash
3592     # if the base pointer is used to access it because the
3593     # base pointer is cleared in the inline assembly code.
3594     check_exec_crash <<EOF && enable ebp_available
3595 volatile int i=0;
3596 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3597 return i;
3598 EOF
3599
3600     # check whether EBX is available on x86
3601     check_inline_asm ebx_available '""::"b"(0)' &&
3602         check_inline_asm ebx_available '"":::"%ebx"'
3603
3604     # check whether xmm clobbers are supported
3605     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3606
3607     # check whether binutils is new enough to compile SSSE3/MMXEXT
3608     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3609     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3610
3611     if ! disabled_any asm mmx yasm; then
3612         if check_cmd $yasmexe --version; then
3613             enabled x86_64 && yasm_extra="-m amd64"
3614             yasm_debug="-g dwarf2"
3615         elif check_cmd nasm -v; then
3616             yasmexe=nasm
3617             yasm_debug="-g -F dwarf"
3618             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3619         fi
3620
3621         YASMFLAGS="-f $objformat $yasm_extra"
3622         enabled pic               && append YASMFLAGS "-DPIC"
3623         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3624         case "$objformat" in
3625             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3626         esac
3627
3628         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3629             die "yasm not found, use --disable-yasm for a crippled build"
3630         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3631         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3632         check_yasm "CPU amdnop" && enable cpunop
3633     fi
3634
3635     case "$cpu" in
3636         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3637             disable fast_clz
3638         ;;
3639     esac
3640
3641 fi
3642
3643 if enabled asm; then
3644     as=${gas:=$as}
3645     check_as <<EOF && enable gnu_as || \
3646         $nogas "GNU assembler not found, install gas-preprocessor"
3647 .macro m n
3648 \n: .int 0
3649 .endm
3650 m x
3651 EOF
3652 fi
3653
3654 check_ldflags -Wl,--as-needed
3655
3656 if check_func dlopen; then
3657     ldl=
3658 elif check_func dlopen -ldl; then
3659     ldl=-ldl
3660 fi
3661
3662 if ! disabled network; then
3663     check_type "sys/types.h sys/socket.h" socklen_t
3664     check_type netdb.h "struct addrinfo"
3665     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3666     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3667     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3668     check_type netinet/in.h "struct sockaddr_in6"
3669     check_type poll.h "struct pollfd"
3670     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3671     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3672     check_type netinet/sctp.h "struct sctp_event_subscribe"
3673     check_func getaddrinfo $network_extralibs
3674     check_func getservbyport $network_extralibs
3675     # Prefer arpa/inet.h over winsock2
3676     if check_header arpa/inet.h ; then
3677         check_func closesocket
3678     elif check_header winsock2.h ; then
3679         check_func_headers winsock2.h closesocket -lws2 &&
3680             network_extralibs="-lws2" ||
3681         { check_func_headers winsock2.h closesocket -lws2_32 &&
3682             network_extralibs="-lws2_32"; }
3683         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3684         check_type ws2tcpip.h socklen_t
3685         check_type ws2tcpip.h "struct addrinfo"
3686         check_type ws2tcpip.h "struct group_source_req"
3687         check_type ws2tcpip.h "struct ip_mreq_source"
3688         check_type ws2tcpip.h "struct ipv6_mreq"
3689         check_type winsock2.h "struct pollfd"
3690         check_type ws2tcpip.h "struct sockaddr_in6"
3691         check_type ws2tcpip.h "struct sockaddr_storage"
3692         check_struct winsock2.h "struct sockaddr" sa_len
3693     else
3694         disable network
3695     fi
3696 fi
3697
3698 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3699 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3700
3701 check_func  access
3702 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3703 check_func  fcntl
3704 check_func  fork
3705 check_func  gethrtime
3706 check_func  getopt
3707 check_func  getrusage
3708 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3709 check_func  gettimeofday
3710 check_func  inet_aton $network_extralibs
3711 check_func  isatty
3712 check_func  localtime_r
3713 check_func  ${malloc_prefix}memalign            && enable memalign
3714 check_func  mkstemp
3715 check_func  mmap
3716 check_func  mprotect
3717 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3718 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3719 check_func  setrlimit
3720 check_func  strerror_r
3721 check_func  sched_getaffinity
3722 check_func  sysconf
3723 check_func  sysctl
3724 check_func  usleep
3725 check_func_headers conio.h kbhit
3726 check_func_headers windows.h PeekNamedPipe
3727 check_func_headers io.h setmode
3728 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3729 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3730 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3731 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3732 check_func_headers windows.h GetProcessAffinityMask
3733 check_func_headers windows.h GetProcessTimes
3734 check_func_headers windows.h GetSystemTimeAsFileTime
3735 check_func_headers windows.h MapViewOfFile
3736 check_func_headers windows.h SetConsoleTextAttribute
3737 check_func_headers windows.h Sleep
3738 check_func_headers windows.h VirtualAlloc
3739 check_func_headers glob.h glob
3740
3741 check_header direct.h
3742 check_header dlfcn.h
3743 check_header dxva.h
3744 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3745 check_header io.h
3746 check_header libcrystalhd/libcrystalhd_if.h
3747 check_header malloc.h
3748 check_header poll.h
3749 check_header sys/mman.h
3750 check_header sys/param.h
3751 check_header sys/resource.h
3752 check_header sys/select.h
3753 check_header sys/time.h
3754 check_header termios.h
3755 check_header unistd.h
3756 check_header vdpau/vdpau.h
3757 check_header vdpau/vdpau_x11.h
3758 check_header windows.h
3759 check_header X11/extensions/XvMClib.h
3760 check_header asm/types.h
3761
3762 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3763 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3764
3765 # check for VDA header
3766 if ! disabled vda && ! enabled ppc; then
3767     if check_header VideoDecodeAcceleration/VDADecoder.h; then
3768         enable vda
3769         add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3770     fi
3771 fi
3772
3773 if ! disabled w32threads && ! enabled pthreads; then
3774     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3775 fi
3776
3777 # check for some common methods of building with pthread support
3778 # do this before the optional library checks as some of them require pthreads
3779 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3780     enable pthreads
3781     if check_func pthread_create; then
3782         :
3783     elif check_func pthread_create -pthread; then
3784         add_cflags -pthread
3785         add_extralibs -pthread
3786     elif check_func pthread_create -pthreads; then
3787         add_cflags -pthreads
3788         add_extralibs -pthreads
3789     elif check_func pthread_create -lpthreadGC2; then
3790         add_extralibs -lpthreadGC2
3791     elif ! check_lib pthread.h pthread_create -lpthread; then
3792         disable pthreads
3793     fi
3794 fi
3795
3796 for thread in $THREADS_LIST; do
3797     if enabled $thread; then
3798         test -n "$thread_type" &&
3799             die "ERROR: Only one thread type must be selected." ||
3800             thread_type="$thread"
3801     fi
3802 done
3803
3804 if enabled pthreads; then
3805   check_func pthread_cancel
3806 fi
3807
3808 check_lib math.h sin -lm && LIBM="-lm"
3809 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3810 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3811
3812 atan2f_args=2
3813 ldexpf_args=2
3814 powf_args=2
3815
3816 for func in $MATH_FUNCS; do
3817     eval check_mathfunc $func \${${func}_args:-1}
3818 done
3819
3820 # these are off by default, so fail if requested and not available
3821 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3822 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3823 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3824 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3825 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3826 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3827 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3828 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3829 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3830                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3831                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3832 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3833 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3834 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3835 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
3836 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3837 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3838 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3839                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3840                         done || die "ERROR: libgsm not found"; }
3841 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3842 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3843 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3844 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3845 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3846 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3847 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3848 enabled libopenjpeg && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
3849                          check_lib openjpeg.h opj_version -lopenjpeg ||
3850                          die "ERROR: libopenjpeg not found"; }
3851 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3852 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3853 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3854 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3855 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3856 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3857 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3858     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3859     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3860 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3861 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3862                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3863                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3864 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3865 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3866 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3867 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3868 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3869 enabled libvpx     && {
3870     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3871                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3872     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
3873                                 die "ERROR: libvpx encoder version must be >=0.9.7"; }
3874     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3875     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3876 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3877                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3878                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3879 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3880 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3881 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3882                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3883                         die "ERROR: openal not found"; } &&
3884                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3885                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3886 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3887                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3888                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3889                         die "ERROR: openssl not found"; }
3890
3891 if enabled gnutls; then
3892     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3893     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3894 fi
3895
3896 # libdc1394 check
3897 if enabled libdc1394; then
3898     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3899         enable libdc1394_2; } ||
3900     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3901         enable libdc1394_1; } ||
3902     die "ERROR: No version of libdc1394 found "
3903 fi
3904
3905 SDL_CONFIG="${cross_prefix}sdl-config"
3906 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3907     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3908     enable sdl &&
3909     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3910 else
3911   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3912     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3913     sdl_libs=$("${SDL_CONFIG}" --libs)
3914     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3915     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3916     enable sdl &&
3917     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3918   fi
3919 fi
3920 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3921
3922 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3923 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3924 perl --version > /dev/null 2>&1 && enable perl || disable perl
3925 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3926 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
3927
3928 check_header linux/fb.h
3929 check_header linux/videodev.h
3930 check_header linux/videodev2.h
3931 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
3932
3933 check_header sys/videoio.h
3934
3935 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3936 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3937 # w32api 3.12 had it defined wrong
3938 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3939
3940 check_type "dshow.h" IBaseFilter
3941
3942 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3943 { check_header dev/bktr/ioctl_meteor.h &&
3944   check_header dev/bktr/ioctl_bt848.h; } ||
3945 { check_header machine/ioctl_meteor.h &&
3946   check_header machine/ioctl_bt848.h; } ||
3947 { check_header dev/video/meteor/ioctl_meteor.h &&
3948   check_header dev/video/bktr/ioctl_bt848.h; } ||
3949 check_header dev/ic/bt8xx.h
3950
3951 check_header sndio.h
3952 if check_struct sys/soundcard.h audio_buf_info bytes; then
3953     enable_safe sys/soundcard.h
3954 else
3955     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3956     #include <sys/soundcard.h>
3957     audio_buf_info abc;
3958 EOF
3959 fi
3960 check_header soundcard.h
3961
3962 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3963
3964 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3965     check_func jack_port_get_latency_range -ljack
3966
3967 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3968
3969 if enabled libcdio; then
3970     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3971 fi
3972
3973 enabled x11grab                                           &&
3974 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3975 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3976 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3977
3978 if ! disabled vaapi; then
3979     check_lib va/va.h vaInitialize -lva && {
3980         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3981         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3982     } || disable vaapi
3983 fi
3984
3985 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3986     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3987         { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." && disable vdpau; }
3988 fi
3989
3990 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3991 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
3992 test -n "$valgrind" && target_exec="$valgrind --error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3993
3994 # add some useful compiler flags if supported
3995 check_cflags -Wdeclaration-after-statement
3996 check_cflags -Wall
3997 check_cflags -Wno-parentheses
3998 check_cflags -Wno-switch
3999 check_cflags -Wno-format-zero-length
4000 check_cflags -Wdisabled-optimization
4001 check_cflags -Wpointer-arith
4002 check_cflags -Wredundant-decls
4003 check_cflags -Wno-pointer-sign
4004 check_cflags -Wwrite-strings
4005 check_cflags -Wtype-limits
4006 check_cflags -Wundef
4007 check_cflags -Wmissing-prototypes
4008 check_cflags -Wno-pointer-to-int-cast
4009 check_cflags -Wstrict-prototypes
4010 enabled extra_warnings && check_cflags -Winline
4011
4012 # add some linker flags
4013 check_ldflags -Wl,--warn-common
4014 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4015 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4016
4017 enabled xmm_clobber_test &&
4018     check_ldflags -Wl,--wrap,avcodec_open2              \
4019                   -Wl,--wrap,avcodec_decode_audio4      \
4020                   -Wl,--wrap,avcodec_decode_video2      \
4021                   -Wl,--wrap,avcodec_decode_subtitle2   \
4022                   -Wl,--wrap,avcodec_encode_audio2      \
4023                   -Wl,--wrap,avcodec_encode_video       \
4024                   -Wl,--wrap,avcodec_encode_subtitle    \
4025                   -Wl,--wrap,sws_scale ||
4026     disable xmm_clobber_test
4027
4028 echo "X{};" > $TMPV
4029 if test_ldflags -Wl,--version-script,$TMPV; then
4030     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4031     check_cc <<EOF && enable symver_asm_label
4032 void ff_foo(void) __asm__ ("av_foo@VERSION");
4033 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4034 EOF
4035     check_cc <<EOF && enable symver_gnu_asm
4036 __asm__(".symver ff_foo,av_foo@VERSION");
4037 void ff_foo(void) {}
4038 EOF
4039 fi
4040
4041 if [ -z "$optflags" ]; then
4042     if enabled small; then
4043         optflags=$cflags_size
4044     elif enabled optimizations; then
4045         optflags=$cflags_speed
4046     else
4047         optflags=$cflags_noopt
4048     fi
4049 fi
4050
4051 check_optflags(){
4052     check_cflags "$@"
4053     enabled lto && check_ldflags "$@"
4054 }
4055
4056
4057 if enabled lto; then
4058     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4059     check_cflags  -flto
4060     check_ldflags -flto $cpuflags
4061 fi
4062
4063 check_optflags $optflags
4064 check_optflags -fno-math-errno
4065 check_optflags -fno-signed-zeros
4066
4067 enabled ftrapv && check_cflags -ftrapv
4068
4069 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4070 int x;
4071 EOF
4072
4073
4074 if enabled icc; then
4075     # Just warnings, no remarks
4076     check_cflags -w1
4077     # -wd: Disable following warnings
4078     # 144, 167, 556: -Wno-pointer-sign
4079     # 188: enumerated type mixed with another type
4080     # 1292: attribute "foo" ignored
4081     # 1419: external declaration in primary source file
4082     # 10006: ignoring unknown option -fno-signed-zeros
4083     # 10148: ignoring unknown option -Wno-parentheses
4084     # 10156: ignoring option '-W'; no argument required
4085     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4086     # 11030: Warning unknown option --as-needed
4087     # 10156: ignoring option '-export'; no argument required
4088     check_ldflags -wd10156,11030
4089     # Allow to compile with optimizations
4090     check_ldflags -march=$cpu
4091     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4092     enable ebp_available
4093     if enabled x86_32; then
4094         icc_version=$($cc -dumpversion)
4095         test ${icc_version%%.*} -ge 11 &&
4096             check_cflags -falign-stack=maintain-16-byte ||
4097             disable aligned_stack
4098     fi
4099 elif enabled ccc; then
4100     # disable some annoying warnings
4101     add_cflags -msg_disable bitnotint
4102     add_cflags -msg_disable mixfuncvoid
4103     add_cflags -msg_disable nonstandcast
4104     add_cflags -msg_disable unsupieee
4105 elif enabled gcc; then
4106     check_optflags -fno-tree-vectorize
4107     check_cflags -Werror=implicit-function-declaration
4108     check_cflags -Werror=missing-prototypes
4109     check_cflags -Werror=return-type
4110     check_cflags -Werror=vla
4111 elif enabled llvm_gcc; then
4112     check_cflags -mllvm -stack-alignment=16
4113 elif enabled clang; then
4114     check_cflags -mllvm -stack-alignment=16
4115     check_cflags -Qunused-arguments
4116     check_cflags -Werror=implicit-function-declaration
4117     check_cflags -Werror=missing-prototypes
4118     check_cflags -Werror=return-type
4119 elif enabled armcc; then
4120     # 2523: use of inline assembler is deprecated
4121     add_cflags -W${armcc_opt},--diag_suppress=2523
4122     add_cflags -W${armcc_opt},--diag_suppress=1207
4123     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4124     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4125     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4126     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4127 elif enabled tms470; then
4128     add_cflags -pds=824 -pds=837
4129 elif enabled pathscale; then
4130     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4131 elif enabled msvc; then
4132     enabled x86_32 && disable aligned_stack
4133 fi
4134
4135 case $target_os in
4136     osf1)
4137         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4138     ;;
4139     plan9)
4140         add_cppflags -Dmain=plan9_main
4141     ;;
4142 esac
4143
4144 enabled_any $THREADS_LIST      && enable threads
4145
4146 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4147
4148 check_deps $CONFIG_LIST       \
4149            $CONFIG_EXTRA      \
4150            $HAVE_LIST         \
4151            $ALL_COMPONENTS    \
4152
4153
4154 if test $target_os = "haiku"; then
4155     disable memalign
4156     disable posix_memalign
4157 fi
4158
4159 ! enabled_any memalign posix_memalign aligned_malloc &&
4160     enabled_any $need_memalign && enable memalign_hack
4161
4162 # add_dep lib dep
4163 # -> enable ${lib}_deps_${dep}
4164 # -> add $dep to ${lib}_deps only once
4165 add_dep() {
4166     lib=$1
4167     dep=$2
4168     enabled "${lib}_deps_${dep}" && return 0
4169     enable  "${lib}_deps_${dep}"
4170     prepend "${lib}_deps" $dep
4171 }
4172
4173 # merge deps lib components
4174 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4175 merge_deps() {
4176     lib=$1
4177     shift
4178     for comp in $*; do
4179         enabled $comp || continue
4180         eval "dep=\"\$${comp}_deps\""
4181         for d in $dep; do
4182             add_dep $lib $d
4183         done
4184     done
4185 }
4186
4187 merge_deps libavfilter $FILTER_LIST
4188
4189 echo "install prefix            $prefix"
4190 echo "source path               $source_path"
4191 echo "C compiler                $cc"
4192 echo "ARCH                      $arch ($cpu)"
4193 if test "$build_suffix" != ""; then
4194     echo "build suffix              $build_suffix"
4195 fi
4196 if test "$progs_suffix" != ""; then
4197     echo "progs suffix              $progs_suffix"
4198 fi
4199 if test "$extra_version" != ""; then
4200     echo "version string suffix     $extra_version"
4201 fi
4202 echo "big-endian                ${bigendian-no}"
4203 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4204 if enabled x86; then
4205     echo "${yasmexe}                      ${yasm-no}"
4206     echo "MMX enabled               ${mmx-no}"
4207     echo "MMXEXT enabled            ${mmxext-no}"
4208     echo "3DNow! enabled            ${amd3dnow-no}"
4209     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4210     echo "SSE enabled               ${sse-no}"
4211     echo "SSSE3 enabled             ${ssse3-no}"
4212     echo "AVX enabled               ${avx-no}"
4213     echo "FMA4 enabled              ${fma4-no}"
4214     echo "CMOV enabled              ${cmov-no}"
4215     echo "CMOV is fast              ${fast_cmov-no}"
4216     echo "EBX available             ${ebx_available-no}"
4217     echo "EBP available             ${ebp_available-no}"
4218 fi
4219 if enabled arm; then
4220     echo "ARMv5TE enabled           ${armv5te-no}"
4221     echo "ARMv6 enabled             ${armv6-no}"
4222     echo "ARMv6T2 enabled           ${armv6t2-no}"
4223     echo "VFP enabled               ${vfp-no}"
4224     echo "NEON enabled              ${neon-no}"
4225     echo "THUMB enabled             ${thumb-no}"
4226 fi
4227 if enabled mips; then
4228     echo "MIPS FPU enabled          ${mipsfpu-no}"
4229     echo "MIPS32R2 enabled          ${mips32r2-no}"
4230     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4231     echo "MIPS DSP R2 enabled       ${mipsdspr2-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 "strip symbols             ${stripping-no}"
4243 echo "optimize for size         ${small-no}"
4244 echo "optimizations             ${optimizations-no}"
4245 echo "static                    ${static-no}"
4246 echo "shared                    ${shared-no}"
4247 echo "postprocessing support    ${postproc-no}"
4248 echo "new filter support        ${avfilter-no}"
4249 echo "network support           ${network-no}"
4250 echo "threading support         ${thread_type-no}"
4251 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4252 echo "SDL support               ${sdl-no}"
4253 echo "libdxva2 enabled          ${dxva2-no}"
4254 echo "libva enabled             ${vaapi-no}"
4255 echo "libvdpau enabled          ${vdpau-no}"
4256 echo "AVISynth enabled          ${avisynth-no}"
4257 echo "frei0r enabled            ${frei0r-no}"
4258 echo "gnutls enabled            ${gnutls-no}"
4259 echo "libaacplus enabled        ${libaacplus-no}"
4260 echo "libass enabled            ${libass-no}"
4261 echo "libcaca enabled           ${libcaca-no}"
4262 echo "libcdio support           ${libcdio-no}"
4263 echo "libcelt enabled           ${libcelt-no}"
4264 echo "libdc1394 support         ${libdc1394-no}"
4265 echo "libfaac enabled           ${libfaac-no}"
4266 echo "libfdk-aac enabled        ${libfdk_aac-no}"
4267 echo "libgsm enabled            ${libgsm-no}"
4268 echo "libiec61883 support       ${libiec61883-no}"
4269 echo "libilbc enabled           ${libilbc-no}"
4270 echo "libmodplug enabled        ${libmodplug-no}"
4271 echo "libmp3lame enabled        ${libmp3lame-no}"
4272 echo "libnut enabled            ${libnut-no}"
4273 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
4274 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
4275 echo "libopencv support         ${libopencv-no}"
4276 echo "libopenjpeg enabled       ${libopenjpeg-no}"
4277 echo "libopus enabled           ${libopus-no}"
4278 echo "libpulse enabled          ${libpulse-no}"
4279 echo "librtmp enabled           ${librtmp-no}"
4280 echo "libschroedinger enabled   ${libschroedinger-no}"
4281 echo "libsoxr enabled           ${libsoxr-no}"
4282 echo "libspeex enabled          ${libspeex-no}"
4283 echo "libstagefright-h264 enabled    ${libstagefright_h264-no}"
4284 echo "libtheora enabled         ${libtheora-no}"
4285 echo "libtwolame enabled        ${libtwolame-no}"
4286 echo "libutvideo enabled        ${libutvideo-no}"
4287 echo "libv4l2 enabled           ${libv4l2-no}"
4288 echo "libvo-aacenc support      ${libvo_aacenc-no}"
4289 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
4290 echo "libvorbis enabled         ${libvorbis-no}"
4291 echo "libvpx enabled            ${libvpx-no}"
4292 echo "libx264 enabled           ${libx264-no}"
4293 echo "libxavs enabled           ${libxavs-no}"
4294 echo "libxvid enabled           ${libxvid-no}"
4295 echo "openal enabled            ${openal-no}"
4296 echo "openssl enabled           ${openssl-no}"
4297 echo "zlib enabled              ${zlib-no}"
4298 echo "bzlib enabled             ${bzlib-no}"
4299 echo "texi2html enabled         ${texi2html-no}"
4300 echo "perl enabled              ${perl-no}"
4301 echo "pod2man enabled           ${pod2man-no}"
4302 echo "makeinfo enabled          ${makeinfo-no}"
4303 test -n "$random_seed" &&
4304     echo "random seed               ${random_seed}"
4305 echo
4306
4307 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4308     echo "Enabled ${type}s:"
4309     eval list=\$$(toupper $type)_LIST
4310     print_enabled '_*' $list | sort | pr -r -3 -t
4311     echo
4312 done
4313
4314 license="LGPL version 2.1 or later"
4315 if enabled nonfree; then
4316     license="nonfree and unredistributable"
4317 elif enabled gplv3; then
4318     license="GPL version 3 or later"
4319 elif enabled lgplv3; then
4320     license="LGPL version 3 or later"
4321 elif enabled gpl; then
4322     license="GPL version 2 or later"
4323 fi
4324
4325 echo "License: $license"
4326
4327 echo "Creating config.mak and config.h..."
4328
4329 test -e Makefile || $ln_s "$source_path/Makefile" .
4330
4331 enabled stripping || strip="echo skipping strip"
4332
4333 config_files="$TMPH config.mak"
4334
4335 cat > config.mak <<EOF
4336 # Automatically generated by configure - do not modify!
4337 ifndef FFMPEG_CONFIG_MAK
4338 FFMPEG_CONFIG_MAK=1
4339 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4340 prefix=$prefix
4341 LIBDIR=\$(DESTDIR)$libdir
4342 SHLIBDIR=\$(DESTDIR)$shlibdir
4343 INCDIR=\$(DESTDIR)$incdir
4344 BINDIR=\$(DESTDIR)$bindir
4345 DATADIR=\$(DESTDIR)$datadir
4346 MANDIR=\$(DESTDIR)$mandir
4347 SRC_PATH=$source_path
4348 ifndef MAIN_MAKEFILE
4349 SRC_PATH:=\$(SRC_PATH:.%=..%)
4350 endif
4351 CC_IDENT=$cc_ident
4352 ARCH=$arch
4353 CC=$cc
4354 CXX=$cxx
4355 AS=$as
4356 LD=$ld
4357 DEPCC=$dep_cc
4358 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4359 DEPAS=$as
4360 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4361 YASM=$yasmexe
4362 DEPYASM=$yasmexe
4363 AR=$ar
4364 ARFLAGS=$arflags
4365 AR_O=$ar_o
4366 RANLIB=$ranlib
4367 CP=cp -p
4368 LN_S=$ln_s
4369 STRIP=$strip
4370 CPPFLAGS=$CPPFLAGS
4371 CFLAGS=$CFLAGS
4372 CXXFLAGS=$CXXFLAGS
4373 ASFLAGS=$ASFLAGS
4374 AS_C=$AS_C
4375 AS_O=$AS_O
4376 CC_C=$CC_C
4377 CC_E=$CC_E
4378 CC_O=$CC_O
4379 CXX_C=$CXX_C
4380 CXX_O=$CXX_O
4381 LD_O=$LD_O
4382 LD_LIB=$LD_LIB
4383 LD_PATH=$LD_PATH
4384 DLLTOOL=$dlltool
4385 LDFLAGS=$LDFLAGS
4386 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4387 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4388 YASMFLAGS=$YASMFLAGS
4389 BUILDSUF=$build_suffix
4390 PROGSSUF=$progs_suffix
4391 FULLNAME=$FULLNAME
4392 LIBPREF=$LIBPREF
4393 LIBSUF=$LIBSUF
4394 LIBNAME=$LIBNAME
4395 SLIBPREF=$SLIBPREF
4396 SLIBSUF=$SLIBSUF
4397 EXESUF=$EXESUF
4398 EXTRA_VERSION=$extra_version
4399 CCDEP=$CCDEP
4400 CXXDEP=$CXXDEP
4401 CCDEP_FLAGS=$CCDEP_FLAGS
4402 ASDEP=$ASDEP
4403 ASDEP_FLAGS=$ASDEP_FLAGS
4404 CC_DEPFLAGS=$CC_DEPFLAGS
4405 AS_DEPFLAGS=$AS_DEPFLAGS
4406 HOSTCC=$host_cc
4407 HOSTLD=$host_ld
4408 HOSTCFLAGS=$host_cflags
4409 HOSTEXESUF=$HOSTEXESUF
4410 HOSTLDFLAGS=$host_ldflags
4411 HOSTLIBS=$host_libs
4412 DEPHOSTCC=$host_cc
4413 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4414 HOSTCCDEP=$HOSTCCDEP
4415 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4416 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4417 HOSTCC_C=$HOSTCC_C
4418 HOSTCC_O=$HOSTCC_O
4419 HOSTLD_O=$HOSTLD_O
4420 TARGET_EXEC=$target_exec
4421 TARGET_PATH=$target_path
4422 LIBS-ffplay=$sdl_libs
4423 CFLAGS-ffplay=$sdl_cflags
4424 ZLIB=$($ldflags_filter -lz)
4425 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4426 EXTRALIBS=$extralibs
4427 COMPAT_OBJS=$compat_objs
4428 EXEOBJS=$exeobjs
4429 INSTALL=$install
4430 LIBTARGET=${LIBTARGET}
4431 SLIBNAME=${SLIBNAME}
4432 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4433 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4434 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4435 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4436 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4437 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4438 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4439 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4440 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4441 NOREDZONE_FLAGS=$noredzone_flags
4442 EOF
4443
4444 get_version(){
4445     lcname=lib${1}
4446     name=$(toupper $lcname)
4447     file=$source_path/$lcname/version.h
4448     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4449     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4450     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4451     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4452 }
4453
4454 map 'get_version $v' $LIBRARY_LIST
4455
4456 cat > $TMPH <<EOF
4457 /* Automatically generated by configure - do not modify! */
4458 #ifndef FFMPEG_CONFIG_H
4459 #define FFMPEG_CONFIG_H
4460 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4461 #define FFMPEG_LICENSE "$(c_escape $license)"
4462 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4463 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4464 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4465 #define av_restrict $_restrict
4466 #define EXTERN_PREFIX "${extern_prefix}"
4467 #define EXTERN_ASM ${extern_prefix}
4468 #define SLIBSUF "$SLIBSUF"
4469 #define HAVE_MMX2 HAVE_MMXEXT
4470 EOF
4471
4472 test -n "$assert_level" &&
4473     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4474
4475 test -n "$malloc_prefix" &&
4476     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4477
4478 if enabled yasm; then
4479     append config_files $TMPASM
4480     printf '' >$TMPASM
4481 fi
4482
4483 print_config ARCH_   "$config_files" $ARCH_LIST
4484 print_config HAVE_   "$config_files" $HAVE_LIST
4485 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4486                                      $CONFIG_EXTRA      \
4487                                      $ALL_COMPONENTS    \
4488
4489 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4490 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4491
4492 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4493 cp_if_changed $TMPH config.h
4494 touch .config
4495
4496 enabled yasm && cp_if_changed $TMPASM config.asm
4497
4498 cat > $TMPH <<EOF
4499 /* Generated by ffconf */
4500 #ifndef AVUTIL_AVCONFIG_H
4501 #define AVUTIL_AVCONFIG_H
4502 EOF
4503
4504 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4505
4506 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4507
4508 cp_if_changed $TMPH libavutil/avconfig.h
4509
4510 if test -n "$WARNINGS"; then
4511     printf "\n$WARNINGS"
4512     enabled fatal_warnings && exit 1
4513 fi
4514
4515 # build pkg-config files
4516
4517 pkgconfig_generate(){
4518     name=$1
4519     shortname=${name#lib}${build_suffix}
4520     comment=$2
4521     version=$3
4522     libs=$4
4523     requires=$5
4524     enabled ${name#lib} || return 0
4525     mkdir -p $name
4526     cat <<EOF > $name/$name.pc
4527 prefix=$prefix
4528 exec_prefix=\${prefix}
4529 libdir=$libdir
4530 includedir=$incdir
4531
4532 Name: $name
4533 Description: $comment
4534 Version: $version
4535 Requires: $(enabled shared || echo $requires)
4536 Requires.private: $(enabled shared && echo $requires)
4537 Conflicts:
4538 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4539 Libs.private: $(enabled shared && echo $libs)
4540 Cflags: -I\${includedir}
4541 EOF
4542
4543 mkdir -p doc/examples/pc-uninstalled
4544 includedir=${source_path}
4545 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4546     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4547 prefix=
4548 exec_prefix=
4549 libdir=\${pcfiledir}/../../../$name
4550 includedir=${includedir}
4551
4552 Name: $name
4553 Description: $comment
4554 Version: $version
4555 Requires: $requires
4556 Conflicts:
4557 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4558 Cflags: -I\${includedir}
4559 EOF
4560 }
4561
4562 libavfilter_pc_deps="libavutil = $LIBAVUTIL_VERSION"
4563 enabled libavfilter_deps_avcodec    && prepend libavfilter_pc_deps "libavcodec = $LIBAVCODEC_VERSION,"
4564 enabled libavfilter_deps_avformat   && prepend libavfilter_pc_deps "libavformat = $LIBAVFORMAT_VERSION,"
4565 enabled libavfilter_deps_avresample && prepend libavfilter_pc_deps "libavresample = $LIBAVRESAMPLE_VERSION,"
4566 enabled libavfilter_deps_swscale    && prepend libavfilter_pc_deps "libswscale = $LIBSWSCALE_VERSION,"
4567 enabled libavfilter_deps_swresample && prepend libavfilter_pc_deps "libswresample = $LIBSWRESAMPLE_VERSION,"
4568 enabled libavfilter_deps_postproc   && prepend libavfilter_pc_deps "libpostproc = $LIBPOSTPROC_VERSION,"
4569 libavfilter_pc_deps=${libavfilter_pc_deps%, }
4570
4571 libavdevice_pc_deps="libavformat = $LIBAVFORMAT_VERSION"
4572 enabled lavfi_indev && prepend libavdevice_pc_deps "libavfilter = $LIBAVFILTER_VERSION,"
4573
4574 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4575 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4576 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4577 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$libavdevice_pc_deps"
4578 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$libavfilter_pc_deps"
4579 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
4580 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4581 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4582 pkgconfig_generate libswresample "FFmpeg audio resampling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4583
4584 fix_ffmpeg_remote(){
4585     git_remote_from=$1
4586     git_remote_to=$2
4587     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4588     if [ "$fixme_remote" != "" ]; then
4589         echolog "
4590 Outdated domain in git config, the official domain for ffmpeg git is since
4591 November 2011, source.ffmpeg.org, both the old and the new point to the same
4592 repository and server. To update it enter the following commands:
4593 "
4594         for remote in $fixme_remote; do
4595             echolog "git remote set-url $remote $git_remote_to"
4596         done
4597     fi
4598 }
4599
4600 if test -f "$source_path/.git/config"; then
4601     remote_from=git.videolan.org
4602     remote_to=source.ffmpeg.org
4603     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4604     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4605 fi