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
 105 Program options:
 106   --disable-programs       do not build command line programs
 107   --disable-ffmpeg         disable ffmpeg build
 108   --disable-ffplay         disable ffplay build
 109   --disable-ffprobe        disable ffprobe build
 110   --disable-ffserver       disable ffserver build
 111
 112 Documentation options:
 113   --disable-doc            do not build documentation
 114   --disable-htmlpages      do not build HTML documentation pages
 115   --disable-manpages       do not build man documentation pages
 116   --disable-podpages       do not build POD documentation pages
 117   --disable-txtpages       do not build text documentation pages
 118
 119 Component options:
 120   --disable-avdevice       disable libavdevice build
 121   --disable-avcodec        disable libavcodec build
 122   --disable-avformat       disable libavformat build
 123   --disable-avutil         disable libavutil build
 124   --disable-swresample     disable libswresample build
 125   --disable-swscale        disable libswscale build
 126   --disable-postproc       disable libpostproc build
 127   --disable-avfilter       disable libavfilter build
 128   --enable-avresample      enable libavresample build [no]
 129   --disable-pthreads       disable pthreads [auto]
 130   --disable-w32threads     disable Win32 threads [auto]
 131   --disable-os2threads     disable OS/2 threads [auto]
 132   --enable-x11grab         enable X11 grabbing [no]
 133   --disable-network        disable network support [no]
 134   --disable-dct            disable DCT code
 135   --disable-dwt            disable DWT code
 136   --disable-lsp            disable LSP code
 137   --disable-lzo            disable LZO decoder code
 138   --disable-mdct           disable MDCT code
 139   --disable-rdft           disable RDFT code
 140   --disable-fft            disable FFT code
 141   --enable-dxva2           enable DXVA2 code
 142   --enable-vaapi           enable VAAPI code [autodetect]
 143   --enable-vda             enable VDA code   [autodetect]
 144   --enable-vdpau           enable VDPAU code [autodetect]
 145
 146 Individual component options:
 147   --disable-everything     disable all components listed below
 148   --disable-encoder=NAME   disable encoder NAME
 149   --enable-encoder=NAME    enable encoder NAME
 150   --disable-encoders       disable all encoders
 151   --disable-decoder=NAME   disable decoder NAME
 152   --enable-decoder=NAME    enable decoder NAME
 153   --disable-decoders       disable all decoders
 154   --disable-hwaccel=NAME   disable hwaccel NAME
 155   --enable-hwaccel=NAME    enable hwaccel NAME
 156   --disable-hwaccels       disable all hwaccels
 157   --disable-muxer=NAME     disable muxer NAME
 158   --enable-muxer=NAME      enable muxer NAME
 159   --disable-muxers         disable all muxers
 160   --disable-demuxer=NAME   disable demuxer NAME
 161   --enable-demuxer=NAME    enable demuxer NAME
 162   --disable-demuxers       disable all demuxers
 163   --enable-parser=NAME     enable parser NAME
 164   --disable-parser=NAME    disable parser NAME
 165   --disable-parsers        disable all parsers
 166   --enable-bsf=NAME        enable bitstream filter NAME
 167   --disable-bsf=NAME       disable bitstream filter NAME
 168   --disable-bsfs           disable all bitstream filters
 169   --enable-protocol=NAME   enable protocol NAME
 170   --disable-protocol=NAME  disable protocol NAME
 171   --disable-protocols      disable all protocols
 172   --enable-indev=NAME      enable input device NAME
 173   --disable-indev=NAME     disable input device NAME
 174   --disable-indevs         disable input devices
 175   --enable-outdev=NAME     enable output device NAME
 176   --disable-outdev=NAME    disable output device NAME
 177   --disable-outdevs        disable output devices
 178   --disable-devices        disable all devices
 179   --enable-filter=NAME     enable filter NAME
 180   --disable-filter=NAME    disable filter NAME
 181   --disable-filters        disable all filters
 182
 183 External library support:
 184   --enable-avisynth        enable reading of AVISynth script files [no]
 185   --enable-bzlib           enable bzlib [autodetect]
 186   --enable-fontconfig      enable fontconfig
 187   --enable-frei0r          enable frei0r video filtering
 188   --enable-gnutls          enable gnutls [no]
 189   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 190   --enable-libass          enable libass subtitles rendering [no]
 191   --enable-libbluray       enable BluRay reading using libbluray [no]
 192   --enable-libcaca         enable textual display using libcaca
 193   --enable-libcelt         enable CELT decoding via libcelt [no]
 194   --enable-libcdio         enable audio CD grabbing with libcdio
 195   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 196                            and libraw1394 [no]
 197   --enable-libfaac         enable AAC encoding via libfaac [no]
 198   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 199   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 200   --enable-libfreetype     enable libfreetype [no]
 201   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 202   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 203   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 204   --enable-libmodplug      enable ModPlug via libmodplug [no]
 205   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 206   --enable-libnut          enable NUT (de)muxing via libnut,
 207                            native (de)muxer exists [no]
 208   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 209   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 210   --enable-libopencv       enable video filtering via libopencv [no]
 211   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 212   --enable-libopus         enable Opus decoding via libopus [no]
 213   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 214   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 215   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 216   --enable-libsoxr         enable Include libsoxr resampling [no]
 217   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 218   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 219   --enable-libtheora       enable Theora encoding via libtheora [no]
 220   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 221   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 222   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 223   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 224   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 225   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 226                            native implementation exists [no]
 227   --enable-libvpx          enable VP8 de/encoding via libvpx [no]
 228   --enable-libx264         enable H.264 encoding via x264 [no]
 229   --enable-libxavs         enable AVS encoding via xavs [no]
 230   --enable-libxvid         enable Xvid encoding via xvidcore,
 231                            native MPEG-4/Xvid encoder exists [no]
 232   --enable-openal          enable OpenAL 1.1 capture support [no]
 233   --enable-openssl         enable openssl [no]
 234   --enable-zlib            enable zlib [autodetect]
 235
 236 Advanced options (experts only):
 237   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 238   --enable-cross-compile   assume a cross-compiler is used
 239   --sysroot=PATH           root of cross-build tree
 240   --sysinclude=PATH        location of cross-build system headers
 241   --target-os=OS           compiler targets OS [$target_os]
 242   --target-exec=CMD        command to run executables on target
 243   --target-path=DIR        path to view of build directory on target
 244   --toolchain=NAME         set tool defaults according to NAME
 245   --nm=NM                  use nm tool NM [$nm_default]
 246   --ar=AR                  use archive tool AR [$ar_default]
 247   --as=AS                  use assembler AS [$as_default]
 248   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 249   --cc=CC                  use C compiler CC [$cc_default]
 250   --cxx=CXX                use C compiler CXX [$cxx_default]
 251   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 252   --ld=LD                  use linker LD [$ld_default]
 253   --host-cc=HOSTCC         use host C compiler HOSTCC
 254   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 255   --host-ld=HOSTLD         use host linker HOSTLD
 256   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 257   --host-libs=HLIBS        use libs HLIBS when linking for host
 258   --host-os=OS             compiler host OS [$target_os]
 259   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 260   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 261   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 262   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 263   --extra-version=STRING   version string suffix []
 264   --optflags=OPTFLAGS      override optimization-related compiler flags
 265   --build-suffix=SUFFIX    library name suffix []
 266   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 267   --progs-suffix=SUFFIX    program name suffix []
 268   --arch=ARCH              select architecture [$arch]
 269   --cpu=CPU                select the minimum required CPU (affects
 270                            instruction selection, may crash on older CPUs)
 271   --enable-pic             build position-independent code
 272   --enable-sram            allow use of on-chip SRAM
 273   --enable-thumb           compile for Thumb instruction set
 274   --disable-symver         disable symbol versioning
 275   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 276   --disable-safe-bitstream-reader
 277                            disable buffer boundary checking in bitreaders
 278                            (faster, but may crash)
 279   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 280   --enable-lto             use link-time optimization
 281
 282 Optimization options (experts only):
 283   --disable-asm            disable all assembler optimizations
 284   --disable-altivec        disable AltiVec optimizations
 285   --disable-amd3dnow       disable 3DNow! optimizations
 286   --disable-amd3dnowext    disable 3DNow! extended optimizations
 287   --disable-mmx            disable MMX optimizations
 288   --disable-mmxext         disable MMXEXT optimizations
 289   --disable-sse            disable SSE optimizations
 290   --disable-sse2           disable SSE2 optimizations
 291   --disable-sse3           disable SSE3 optimizations
 292   --disable-ssse3          disable SSSE3 optimizations
 293   --disable-sse4           disable SSE4 optimizations
 294   --disable-sse42          disable SSE4.2 optimizations
 295   --disable-avx            disable AVX optimizations
 296   --disable-fma4           disable FMA4 optimizations
 297   --disable-armv5te        disable armv5te optimizations
 298   --disable-armv6          disable armv6 optimizations
 299   --disable-armv6t2        disable armv6t2 optimizations
 300   --disable-vfp            disable VFP optimizations
 301   --disable-neon           disable NEON optimizations
 302   --disable-vis            disable VIS optimizations
 303   --disable-inline-asm     disable use of inline assembler
 304   --disable-yasm           disable use of yasm assembler
 305   --disable-mips32r2       disable MIPS32R2 optimizations
 306   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 307   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 308   --disable-mipsfpu        disable floating point MIPS optimizations
 309   --disable-fast-unaligned consider unaligned accesses slow
 310   --postproc-version=V     build libpostproc version V.
 311                            Where V can be '$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO' or 'current'. [$postproc_version_default]
 312
 313 Developer options (useful when working on FFmpeg itself):
 314   --enable-coverage        build with test coverage instrumentation
 315   --disable-debug          disable debugging symbols
 316   --enable-debug=LEVEL     set the debug level [$debuglevel]
 317   --disable-optimizations  disable compiler optimizations
 318   --enable-extra-warnings  enable more compiler warnings
 319   --disable-stripping      disable stripping of executables and shared libraries
 320   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 321                            2 causes a slowdown at runtime.
 322   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 323   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 324                            leaks and errors, using the specified valgrind binary.
 325                            Cannot be combined with --target-exec
 326   --enable-ftrapv          Trap arithmetic overflows
 327   --samples=PATH           location of test samples for FATE, if not set use
 328                            \$FATE_SAMPLES at make invocation time.
 329   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 330                            should be used only for debugging purposes)
 331   --enable-random          randomly enable/disable components
 332   --disable-random
 333   --enable-random=LIST     randomly enable/disable specific components or
 334   --disable-random=LIST    component groups. LIST is a comma-separated list
 335                            of NAME[:PROB] entries where NAME is a component
 336                            (group) and PROB the probability associated with
 337                            NAME (default 0.5).
 338   --random-seed=VALUE      seed value for --enable/disable-random
 339
 340 NOTE: Object files are built at the place where configure is launched.
 341 EOF
 342   exit 0
 343 }
 344
 345 quotes='""'
 346
 347 log(){
 348     echo "$@" >> $logfile
 349 }
 350
 351 log_file(){
 352     log BEGIN $1
 353     pr -n -t $1 >> $logfile
 354     log END $1
 355 }
 356
 357 echolog(){
 358     log "$@"
 359     echo "$@"
 360 }
 361
 362 warn(){
 363     log "WARNING: $*"
 364     WARNINGS="${WARNINGS}WARNING: $*\n"
 365 }
 366
 367 die(){
 368     echolog "$@"
 369     cat <<EOF
 370
 371 If you think configure made a mistake, make sure you are using the latest
 372 version from Git.  If the latest version fails, report the problem to the
 373 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 374 EOF
 375     if disabled logging; then
 376         cat <<EOF
 377 Rerun configure with logging enabled (do not use --disable-logging), and
 378 include the log this produces with your report.
 379 EOF
 380     else
 381         cat <<EOF
 382 Include the log file "$logfile" produced by configure as this will help
 383 solving the problem.
 384 EOF
 385     fi
 386     exit 1
 387 }
 388
 389 # Avoid locale weirdness, besides we really just want to translate ASCII.
 390 toupper(){
 391     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 392 }
 393
 394 tolower(){
 395     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 396 }
 397
 398 c_escape(){
 399     echo "$*" | sed 's/["\\]/\\\0/g'
 400 }
 401
 402 sh_quote(){
 403     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 404     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 405     echo "$v"
 406 }
 407
 408 cleanws(){
 409     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 410 }
 411
 412 filter(){
 413     pat=$1
 414     shift
 415     for v; do
 416         eval "case $v in $pat) echo $v ;; esac"
 417     done
 418 }
 419
 420 filter_out(){
 421     pat=$1
 422     shift
 423     for v; do
 424         eval "case $v in $pat) ;; *) echo $v ;; esac"
 425     done
 426 }
 427
 428 map(){
 429     m=$1
 430     shift
 431     for v; do eval $m; done
 432 }
 433
 434 add_suffix(){
 435     suffix=$1
 436     shift
 437     for v; do echo ${v}${suffix}; done
 438 }
 439
 440 set_all(){
 441     value=$1
 442     shift
 443     for var in $*; do
 444         eval $var=$value
 445     done
 446 }
 447
 448 set_weak(){
 449     value=$1
 450     shift
 451     for var; do
 452         eval : \${$var:=$value}
 453     done
 454 }
 455
 456 set_safe(){
 457     var=$1
 458     shift
 459     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 460 }
 461
 462 get_safe(){
 463     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 464 }
 465
 466 pushvar(){
 467     for var in $*; do
 468         eval level=\${${var}_level:=0}
 469         eval ${var}_${level}="\$$var"
 470         eval ${var}_level=$(($level+1))
 471     done
 472 }
 473
 474 popvar(){
 475     for var in $*; do
 476         eval level=\${${var}_level:-0}
 477         test $level = 0 && continue
 478         eval level=$(($level-1))
 479         eval $var="\${${var}_${level}}"
 480         eval ${var}_level=$level
 481         eval unset ${var}_${level}
 482     done
 483 }
 484
 485 enable(){
 486     set_all yes $*
 487 }
 488
 489 disable(){
 490     set_all no $*
 491 }
 492
 493 enable_weak(){
 494     set_weak yes $*
 495 }
 496
 497 disable_weak(){
 498     set_weak no $*
 499 }
 500
 501 enable_safe(){
 502     for var; do
 503         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 504     done
 505 }
 506
 507 disable_safe(){
 508     for var; do
 509         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 510     done
 511 }
 512
 513 do_enable_deep(){
 514     for var; do
 515         enabled $var && continue
 516         eval sel="\$${var}_select"
 517         eval sgs="\$${var}_suggest"
 518         pushvar var sgs
 519         enable_deep $sel
 520         popvar sgs
 521         enable_deep_weak $sgs
 522         popvar var
 523     done
 524 }
 525
 526 enable_deep(){
 527     do_enable_deep $*
 528     enable $*
 529 }
 530
 531 enable_deep_weak(){
 532     do_enable_deep $*
 533     enable_weak $*
 534 }
 535
 536 enabled(){
 537     test "${1#!}" = "$1" && op== || op=!=
 538     eval test "x\$${1#!}" $op "xyes"
 539 }
 540
 541 disabled(){
 542     test "${1#!}" = "$1" && op== || op=!=
 543     eval test "x\$${1#!}" $op "xno"
 544 }
 545
 546 enabled_all(){
 547     for opt; do
 548         enabled $opt || return 1
 549     done
 550 }
 551
 552 disabled_all(){
 553     for opt; do
 554         disabled $opt || return 1
 555     done
 556 }
 557
 558 enabled_any(){
 559     for opt; do
 560         enabled $opt && return 0
 561     done
 562 }
 563
 564 disabled_any(){
 565     for opt; do
 566         disabled $opt && return 0
 567     done
 568     return 1
 569 }
 570
 571 set_default(){
 572     for opt; do
 573         eval : \${$opt:=\$${opt}_default}
 574     done
 575 }
 576
 577 is_in(){
 578     value=$1
 579     shift
 580     for var in $*; do
 581         [ $var = $value ] && return 0
 582     done
 583     return 1
 584 }
 585
 586 do_check_deps(){
 587     for cfg; do
 588         cfg="${cfg#!}"
 589         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 590         disabled ${cfg}_checking && continue
 591         enable ${cfg}_checking
 592         append allopts $cfg
 593
 594         eval dep_all="\$${cfg}_deps"
 595         eval dep_any="\$${cfg}_deps_any"
 596         eval dep_sel="\$${cfg}_select"
 597         eval dep_sgs="\$${cfg}_suggest"
 598         eval dep_ifa="\$${cfg}_if"
 599         eval dep_ifn="\$${cfg}_if_any"
 600
 601         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 602         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 603         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 604
 605         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 606         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 607         enabled_all  $dep_all || disable $cfg
 608         enabled_any  $dep_any || disable $cfg
 609         disabled_any $dep_sel && disable $cfg
 610
 611         if enabled $cfg; then
 612             enable_deep $dep_sel
 613             enable_deep_weak $dep_sgs
 614         fi
 615
 616         disable ${cfg}_checking
 617     done
 618 }
 619
 620 check_deps(){
 621     unset allopts
 622
 623     do_check_deps "$@"
 624
 625     for cfg in $allopts; do
 626         enabled $cfg || continue
 627         eval dep_extralibs="\$${cfg}_extralibs"
 628         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 629     done
 630 }
 631
 632 print_config(){
 633     pfx=$1
 634     files=$2
 635     shift 2
 636     map 'eval echo "$v \${$v:-no}"' "$@" |
 637     awk "BEGIN { split(\"$files\", files) }
 638         {
 639             c = \"$pfx\" toupper(\$1);
 640             v = \$2;
 641             sub(/yes/, 1, v);
 642             sub(/no/,  0, v);
 643             for (f in files) {
 644                 file = files[f];
 645                 if (file ~ /\\.h\$/) {
 646                     printf(\"#define %s %d\\n\", c, v) >>file;
 647                 } else if (file ~ /\\.asm\$/) {
 648                     printf(\"%%define %s %d\\n\", c, v) >>file;
 649                 } else if (file ~ /\\.mak\$/) {
 650                     n = -v ? \"\" : \"!\";
 651                     printf(\"%s%s=yes\\n\", n, c) >>file;
 652                 }
 653             }
 654         }"
 655 }
 656
 657 print_enabled(){
 658     suf=$1
 659     shift
 660     for v; do
 661         enabled $v && printf "%s\n" ${v%$suf};
 662     done
 663 }
 664
 665 append(){
 666     var=$1
 667     shift
 668     eval "$var=\"\$$var $*\""
 669 }
 670
 671 prepend(){
 672     var=$1
 673     shift
 674     eval "$var=\"$* \$$var\""
 675 }
 676
 677 add_cppflags(){
 678     append CPPFLAGS "$@"
 679 }
 680
 681 add_cflags(){
 682     append CFLAGS $($cflags_filter "$@")
 683 }
 684
 685 add_cxxflags(){
 686     append CXXFLAGS $($cflags_filter "$@")
 687 }
 688
 689 add_asflags(){
 690     append ASFLAGS $($asflags_filter "$@")
 691 }
 692
 693 add_ldflags(){
 694     append LDFLAGS $($ldflags_filter "$@")
 695 }
 696
 697 add_extralibs(){
 698     prepend extralibs $($ldflags_filter "$@")
 699 }
 700
 701 add_host_cflags(){
 702     append host_cflags $($host_cflags_filter "$@")
 703 }
 704
 705 add_host_ldflags(){
 706     append host_ldflags $($host_ldflags_filter "$@")
 707 }
 708
 709 add_compat(){
 710     append compat_objs $1
 711     shift
 712     map 'add_cppflags -D$v' "$@"
 713 }
 714
 715 check_cmd(){
 716     log "$@"
 717     "$@" >> $logfile 2>&1
 718 }
 719
 720 cc_o(){
 721     eval printf '%s\\n' $CC_O
 722 }
 723
 724 cc_e(){
 725     eval printf '%s\\n' $CC_E
 726 }
 727
 728 check_cc(){
 729     log check_cc "$@"
 730     cat > $TMPC
 731     log_file $TMPC
 732     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 733 }
 734
 735 check_cxx(){
 736     log check_cxx "$@"
 737     cat > $TMPCPP
 738     log_file $TMPCPP
 739     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 740 }
 741
 742 check_cpp(){
 743     log check_cpp "$@"
 744     cat > $TMPC
 745     log_file $TMPC
 746     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 747 }
 748
 749 as_o(){
 750     eval printf '%s\\n' $AS_O
 751 }
 752
 753 check_as(){
 754     log check_as "$@"
 755     cat > $TMPS
 756     log_file $TMPS
 757     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 758 }
 759
 760 check_inline_asm(){
 761     log check_inline_asm "$@"
 762     name="$1"
 763     code="$2"
 764     shift 2
 765     disable $name
 766     check_cc "$@" <<EOF && enable $name
 767 void foo(void){ __asm__ volatile($code); }
 768 EOF
 769 }
 770
 771 check_insn(){
 772     log check_insn "$@"
 773     check_inline_asm ${1}_inline "\"$2\""
 774     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 775 }
 776
 777 check_yasm(){
 778     log check_yasm "$@"
 779     echo "$1" > $TMPS
 780     log_file $TMPS
 781     shift 1
 782     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 783 }
 784
 785 ld_o(){
 786     eval printf '%s\\n' $LD_O
 787 }
 788
 789 check_ld(){
 790     log check_ld "$@"
 791     type=$1
 792     shift 1
 793     flags=$(filter_out '-l*' $@)
 794     libs=$(filter '-l*' $@)
 795     check_$type $($cflags_filter $flags) || return
 796     flags=$($ldflags_filter $flags)
 797     libs=$($ldflags_filter $libs)
 798     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 799 }
 800
 801 check_code(){
 802     log check_code "$@"
 803     check=$1
 804     headers=$2
 805     code=$3
 806     shift 3
 807     {
 808         for hdr in $headers; do
 809             echo "#include <$hdr>"
 810         done
 811         echo "int main(void) { $code; return 0; }"
 812     } | check_$check "$@"
 813 }
 814
 815 check_cppflags(){
 816     log check_cppflags "$@"
 817     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 818 int x;
 819 EOF
 820 }
 821
 822 check_cflags(){
 823     log check_cflags "$@"
 824     set -- $($cflags_filter "$@")
 825     check_cc "$@" <<EOF && append CFLAGS "$@"
 826 int x;
 827 EOF
 828 }
 829
 830 check_cxxflags(){
 831     log check_cxxflags "$@"
 832     set -- $($cflags_filter "$@")
 833     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 834 int x;
 835 EOF
 836 }
 837
 838 test_ldflags(){
 839     log test_ldflags "$@"
 840     check_ld "cc" "$@" <<EOF
 841 int main(void){ return 0; }
 842 EOF
 843 }
 844
 845 check_ldflags(){
 846     log check_ldflags "$@"
 847     test_ldflags "$@" && add_ldflags "$@"
 848 }
 849
 850 check_header(){
 851     log check_header "$@"
 852     header=$1
 853     shift
 854     disable_safe $header
 855     check_cpp "$@" <<EOF && enable_safe $header
 856 #include <$header>
 857 int x;
 858 EOF
 859 }
 860
 861 check_func(){
 862     log check_func "$@"
 863     func=$1
 864     shift
 865     disable $func
 866     check_ld "cc" "$@" <<EOF && enable $func
 867 extern int $func();
 868 int main(void){ $func(); }
 869 EOF
 870 }
 871
 872 check_mathfunc(){
 873     log check_mathfunc "$@"
 874     func=$1
 875     narg=$2
 876     shift 2
 877     test $narg = 2 && args="f, g" || args="f"
 878     disable $func
 879     check_ld "cc" "$@" <<EOF && enable $func
 880 #include <math.h>
 881 float foo(float f, float g) { return $func($args); }
 882 int main(void){ return (int) foo; }
 883 EOF
 884 }
 885
 886 check_func_headers(){
 887     log check_func_headers "$@"
 888     headers=$1
 889     funcs=$2
 890     shift 2
 891     {
 892         for hdr in $headers; do
 893             echo "#include <$hdr>"
 894         done
 895         for func in $funcs; do
 896             echo "long check_$func(void) { return (long) $func; }"
 897         done
 898         echo "int main(void) { return 0; }"
 899     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 900 }
 901
 902 check_class_headers_cpp(){
 903     log check_class_headers_cpp "$@"
 904     headers=$1
 905     classes=$2
 906     shift 2
 907     {
 908         for hdr in $headers; do
 909             echo "#include <$hdr>"
 910         done
 911         echo "int main(void) { "
 912         i=1
 913         for class in $classes; do
 914             echo "$class obj$i;"
 915             i=$(expr $i + 1)
 916         done
 917         echo "return 0; }"
 918     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 919 }
 920
 921 check_cpp_condition(){
 922     log check_cpp_condition "$@"
 923     header=$1
 924     condition=$2
 925     shift 2
 926     check_cpp "$@" <<EOF
 927 #include <$header>
 928 #if !($condition)
 929 #error "unsatisfied condition: $condition"
 930 #endif
 931 EOF
 932 }
 933
 934 check_lib(){
 935     log check_lib "$@"
 936     header="$1"
 937     func="$2"
 938     shift 2
 939     check_header $header && check_func $func "$@" && add_extralibs "$@"
 940 }
 941
 942 check_lib2(){
 943     log check_lib2 "$@"
 944     headers="$1"
 945     funcs="$2"
 946     shift 2
 947     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 948 }
 949
 950 check_lib_cpp(){
 951     log check_lib_cpp "$@"
 952     headers="$1"
 953     classes="$2"
 954     shift 2
 955     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 956 }
 957
 958 check_pkg_config(){
 959     log check_pkg_config "$@"
 960     pkg="$1"
 961     headers="$2"
 962     funcs="$3"
 963     shift 3
 964     $pkg_config --exists $pkg 2>/dev/null || return
 965     pkg_cflags=$($pkg_config --cflags $pkg)
 966     pkg_libs=$($pkg_config --libs $pkg)
 967     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 968         set_safe ${pkg}_cflags $pkg_cflags   &&
 969         set_safe ${pkg}_libs   $pkg_libs
 970 }
 971
 972 check_exec(){
 973     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 974 }
 975
 976 check_exec_crash(){
 977     code=$(cat)
 978
 979     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 980     # are safe but may not be available everywhere.  Thus we use
 981     # raise(SIGTERM) instead.  The check is run in a subshell so we
 982     # can redirect the "Terminated" message from the shell.  SIGBUS
 983     # is not defined by standard C so it is used conditionally.
 984
 985     (check_exec "$@") >> $logfile 2>&1 <<EOF
 986 #include <signal.h>
 987 static void sighandler(int sig){
 988     raise(SIGTERM);
 989 }
 990 int func(void){
 991     $code
 992 }
 993 int (*func_ptr)(void) = func;
 994 int main(void){
 995     signal(SIGILL, sighandler);
 996     signal(SIGFPE, sighandler);
 997     signal(SIGSEGV, sighandler);
 998 #ifdef SIGBUS
 999     signal(SIGBUS, sighandler);
1000 #endif
1001     return func_ptr();
1002 }
1003 EOF
1004 }
1005
1006 check_type(){
1007     log check_type "$@"
1008     headers=$1
1009     type=$2
1010     shift 2
1011     disable_safe "$type"
1012     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1013 }
1014
1015 check_struct(){
1016     log check_type "$@"
1017     headers=$1
1018     struct=$2
1019     member=$3
1020     shift 3
1021     disable_safe "${struct}_${member}"
1022     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1023         enable_safe "${struct}_${member}"
1024 }
1025
1026 require(){
1027     name="$1"
1028     header="$2"
1029     func="$3"
1030     shift 3
1031     check_lib $header $func "$@" || die "ERROR: $name not found"
1032 }
1033
1034 require2(){
1035     name="$1"
1036     headers="$2"
1037     func="$3"
1038     shift 3
1039     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1040 }
1041
1042 require_cpp(){
1043     name="$1"
1044     headers="$2"
1045     classes="$3"
1046     shift 3
1047     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1048 }
1049
1050 require_pkg_config(){
1051     pkg="$1"
1052     check_pkg_config "$@" || die "ERROR: $pkg not found"
1053     add_cflags    $(get_safe ${pkg}_cflags)
1054     add_extralibs $(get_safe ${pkg}_libs)
1055 }
1056
1057 hostcc_o(){
1058     eval printf '%s\\n' $HOSTCC_O
1059 }
1060
1061 check_host_cc(){
1062     log check_host_cc "$@"
1063     cat > $TMPC
1064     log_file $TMPC
1065     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1066 }
1067
1068 check_host_cflags(){
1069     log check_host_cflags "$@"
1070     set -- $($host_cflags_filter "$@")
1071     check_host_cc "$@" <<EOF && append host_cflags "$@"
1072 int x;
1073 EOF
1074 }
1075
1076 apply(){
1077     file=$1
1078     shift
1079     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1080 }
1081
1082 cp_if_changed(){
1083     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1084     mkdir -p "$(dirname $2)"
1085     $cp_f "$1" "$2"
1086 }
1087
1088 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1089 # system-dependent things.
1090
1091 COMPONENT_LIST="
1092     bsfs
1093     decoders
1094     demuxers
1095     encoders
1096     filters
1097     hwaccels
1098     indevs
1099     muxers
1100     outdevs
1101     parsers
1102     protocols
1103 "
1104
1105 DOCUMENT_LIST="
1106     doc
1107     htmlpages
1108     manpages
1109     podpages
1110     txtpages
1111 "
1112
1113 LIBRARY_LIST="
1114     avcodec
1115     avdevice
1116     avfilter
1117     avformat
1118     avresample
1119     avutil
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     postproc
1202     rdft
1203     runtime_cpudetect
1204     safe_bitstream_reader
1205     shared
1206     small
1207     sram
1208     static
1209     swscale_alpha
1210     thumb
1211     vaapi
1212     vda
1213     vdpau
1214     version3
1215     xmm_clobber_test
1216     x11grab
1217     zlib
1218 "
1219
1220 THREADS_LIST='
1221     pthreads
1222     w32threads
1223     os2threads
1224 '
1225
1226 ARCH_LIST='
1227     aarch64
1228     alpha
1229     arm
1230     avr32
1231     avr32_ap
1232     avr32_uc
1233     bfin
1234     ia64
1235     m68k
1236     mips
1237     mips64
1238     parisc
1239     ppc
1240     ppc64
1241     s390
1242     sh4
1243     sparc
1244     sparc64
1245     tilegx
1246     tilepro
1247     tomi
1248     x86
1249     x86_32
1250     x86_64
1251 '
1252
1253 ARCH_EXT_LIST_ARM='
1254     armv5te
1255     armv6
1256     armv6t2
1257     neon
1258     vfp
1259     vfpv3
1260 '
1261
1262 ARCH_EXT_LIST_X86='
1263     amd3dnow
1264     amd3dnowext
1265     avx
1266     fma4
1267     mmx
1268     mmxext
1269     sse
1270     sse2
1271     sse3
1272     sse4
1273     sse42
1274     ssse3
1275 '
1276
1277 ARCH_EXT_LIST="
1278     $ARCH_EXT_LIST_ARM
1279     $ARCH_EXT_LIST_X86
1280     altivec
1281     ppc4xx
1282     vis
1283     mipsfpu
1284     mips32r2
1285     mipsdspr1
1286     mipsdspr2
1287 "
1288
1289 HAVE_LIST_CMDLINE='
1290     inline_asm
1291     symver
1292     yasm
1293 '
1294
1295 HAVE_LIST_PUB='
1296     bigendian
1297     fast_unaligned
1298     incompatible_fork_abi
1299 '
1300
1301 MATH_FUNCS="
1302     atanf
1303     atan2f
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     clock_gettime
1348     closesocket
1349     cmov
1350     CommandLineToArgvW
1351     cpunop
1352     CryptGenRandom
1353     dcbzl
1354     dev_bktr_ioctl_bt848_h
1355     dev_bktr_ioctl_meteor_h
1356     dev_ic_bt8xx_h
1357     dev_video_bktr_ioctl_bt848_h
1358     dev_video_meteor_ioctl_meteor_h
1359     direct_h
1360     dlfcn_h
1361     dlopen
1362     dos_paths
1363     dxva_h
1364     ebp_available
1365     ebx_available
1366     fast_64bit
1367     fast_clz
1368     fast_cmov
1369     fcntl
1370     fork
1371     getaddrinfo
1372     gethrtime
1373     getopt
1374     GetProcessAffinityMask
1375     GetProcessMemoryInfo
1376     GetProcessTimes
1377     GetSystemTimeAsFileTime
1378     getrusage
1379     getservbyport
1380     gettimeofday
1381     glob
1382     gnu_as
1383     ibm_asm
1384     inet_aton
1385     io_h
1386     isatty
1387     jack_port_get_latency_range
1388     kbhit
1389     ldbrx
1390     libdc1394_1
1391     libdc1394_2
1392     local_aligned_16
1393     local_aligned_8
1394     localtime_r
1395     loongson
1396     lzo1x_999_compress
1397     machine_ioctl_bt848_h
1398     machine_ioctl_meteor_h
1399     makeinfo
1400     malloc_h
1401     MapViewOfFile
1402     memalign
1403     mkstemp
1404     mm_empty
1405     mmap
1406     mprotect
1407     msvcrt
1408     nanosleep
1409     PeekNamedPipe
1410     perl
1411     pod2man
1412     poll_h
1413     posix_memalign
1414     pthread_cancel
1415     rdtsc
1416     sched_getaffinity
1417     sdl
1418     sdl_video_size
1419     SetConsoleTextAttribute
1420     setmode
1421     setrlimit
1422     Sleep
1423     sndio_h
1424     socklen_t
1425     soundcard_h
1426     strerror_r
1427     struct_addrinfo
1428     struct_group_source_req
1429     struct_ip_mreq_source
1430     struct_ipv6_mreq
1431     struct_pollfd
1432     struct_rusage_ru_maxrss
1433     struct_sctp_event_subscribe
1434     struct_sockaddr_in6
1435     struct_sockaddr_sa_len
1436     struct_sockaddr_storage
1437     struct_v4l2_frmivalenum_discrete
1438     symver_asm_label
1439     symver_gnu_asm
1440     sysconf
1441     sysctl
1442     sys_mman_h
1443     sys_param_h
1444     sys_resource_h
1445     sys_select_h
1446     sys_soundcard_h
1447     sys_time_h
1448     sys_videoio_h
1449     termios_h
1450     texi2html
1451     threads
1452     unistd_h
1453     usleep
1454     vfp_args
1455     VirtualAlloc
1456     windows_h
1457     winsock2_h
1458     xform_asm
1459     xmm_clobbers
1460 "
1461
1462 # options emitted with CONFIG_ prefix but not available on command line
1463 CONFIG_EXTRA="
1464     aandcttables
1465     ac3dsp
1466     error_resilience
1467     gcrypt
1468     golomb
1469     gplv3
1470     h264chroma
1471     h264dsp
1472     h264pred
1473     h264qpel
1474     huffman
1475     lgplv3
1476     lpc
1477     mpegaudio
1478     mpegaudiodsp
1479     mpegvideo
1480     mpegvideoenc
1481     nettle
1482     rangecoder
1483     rtpdec
1484     sinewin
1485     vp3dsp
1486 "
1487
1488 CMDLINE_SELECT="
1489     $ARCH_EXT_LIST
1490     $CONFIG_LIST
1491     $HAVE_LIST_CMDLINE
1492     $THREADS_LIST
1493     asm
1494     coverage
1495     cross_compile
1496     debug
1497     extra_warnings
1498     logging
1499     lto
1500     optimizations
1501     stripping
1502 "
1503
1504 PATHS_LIST='
1505     bindir
1506     datadir
1507     incdir
1508     libdir
1509     mandir
1510     prefix
1511     shlibdir
1512 '
1513
1514 CMDLINE_SET="
1515     $PATHS_LIST
1516     ar
1517     arch
1518     as
1519     assert_level
1520     build_suffix
1521     cc
1522     cpu
1523     cross_prefix
1524     cxx
1525     dep_cc
1526     extra_version
1527     host_cc
1528     host_cflags
1529     host_ld
1530     host_ldflags
1531     host_libs
1532     host_os
1533     install
1534     ld
1535     logfile
1536     malloc_prefix
1537     nm
1538     optflags
1539     pkg_config
1540     postproc_version
1541     progs_suffix
1542     random_seed
1543     samples
1544     strip
1545     sysinclude
1546     sysroot
1547     target_exec
1548     target_os
1549     target_path
1550     toolchain
1551     valgrind
1552     yasmexe
1553 "
1554
1555 CMDLINE_APPEND="
1556     extra_cflags
1557     extra_cxxflags
1558 "
1559
1560 # code dependency declarations
1561
1562 # architecture extensions
1563
1564 armv5te_deps="arm"
1565 armv6_deps="arm"
1566 armv6t2_deps="arm"
1567 neon_deps="arm"
1568 vfp_deps="arm"
1569 vfpv3_deps="vfp"
1570
1571 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1572
1573 mipsfpu_deps="mips"
1574 mips32r2_deps="mips"
1575 mipsdspr1_deps="mips"
1576 mipsdspr2_deps="mips"
1577
1578 altivec_deps="ppc"
1579 ppc4xx_deps="ppc"
1580
1581 vis_deps="sparc"
1582
1583 x86_64_suggest="cmov fast_cmov"
1584
1585 amd3dnow_deps="mmx"
1586 amd3dnowext_deps="amd3dnow"
1587 mmx_deps="x86"
1588 mmxext_deps="mmx"
1589 sse_deps="mmxext"
1590 sse2_deps="sse"
1591 sse3_deps="sse2"
1592 ssse3_deps="sse3"
1593 sse4_deps="ssse3"
1594 sse42_deps="sse4"
1595 avx_deps="sse42"
1596 fma4_deps="avx"
1597
1598 mmx_external_deps="yasm"
1599 mmx_inline_deps="inline_asm"
1600 mmx_suggest="mmx_external mmx_inline"
1601
1602 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1603     eval dep=\$${ext}_deps
1604     eval ${ext}_external_deps='"${dep}_external"'
1605     eval ${ext}_inline_deps='"${dep}_inline"'
1606     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1607 done
1608
1609 aligned_stack_if_any="ppc x86"
1610 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1611 fast_clz_if_any="alpha avr32 mips ppc x86"
1612 fast_unaligned_if_any="ppc x86"
1613
1614 inline_asm_deps="!tms470"
1615 need_memalign="altivec neon sse"
1616
1617 symver_if_any="symver_asm_label symver_gnu_asm"
1618
1619 log2_deps="!msvcrt"
1620
1621 # subsystems
1622 dct_select="rdft"
1623 mdct_select="fft"
1624 rdft_select="fft"
1625 mpegaudio_select="mpegaudiodsp"
1626 mpegaudiodsp_select="dct"
1627 mpegvideoenc_select="mpegvideo"
1628
1629 # decoders / encoders / hardware accelerators
1630 aac_decoder_select="mdct sinewin"
1631 aac_encoder_select="mdct sinewin"
1632 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1633 ac3_decoder_select="mdct ac3dsp ac3_parser"
1634 ac3_encoder_select="mdct ac3dsp"
1635 ac3_fixed_encoder_select="mdct ac3dsp"
1636 alac_encoder_select="lpc"
1637 amrnb_decoder_select="lsp"
1638 amrwb_decoder_select="lsp"
1639 amv_encoder_select="aandcttables"
1640 atrac1_decoder_select="mdct sinewin"
1641 atrac3_decoder_select="mdct"
1642 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1643 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1644 cavs_decoder_select="golomb mpegvideo"
1645 comfortnoise_encoder_select="lpc"
1646 cook_decoder_select="mdct sinewin"
1647 cscd_decoder_select="lzo"
1648 cscd_decoder_suggest="zlib"
1649 dca_decoder_select="mdct"
1650 dirac_decoder_select="dwt golomb"
1651 dnxhd_encoder_select="aandcttables mpegvideoenc"
1652 dxa_decoder_select="zlib"
1653 eac3_decoder_select="ac3_decoder"
1654 eac3_encoder_select="ac3_encoder"
1655 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1656 eatgq_decoder_select="aandcttables"
1657 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1658 exr_decoder_select="zlib"
1659 ffv1_decoder_select="golomb rangecoder"
1660 ffv1_encoder_select="rangecoder"
1661 ffvhuff_encoder_select="huffman"
1662 flac_decoder_select="golomb"
1663 flac_encoder_select="golomb lpc"
1664 flashsv_decoder_select="zlib"
1665 flashsv_encoder_select="zlib"
1666 flashsv2_encoder_select="zlib"
1667 flashsv2_decoder_select="zlib"
1668 flv_decoder_select="h263_decoder"
1669 flv_encoder_select="h263_encoder"
1670 fraps_decoder_select="huffman"
1671 h261_decoder_select="error_resilience mpegvideo"
1672 h261_encoder_select="aandcttables mpegvideoenc"
1673 h263_decoder_select="error_resilience h263_parser mpegvideo"
1674 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1675 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1676 h263i_decoder_select="h263_decoder"
1677 h263p_encoder_select="h263_encoder"
1678 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1679 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1680 h264_dxva2_hwaccel_deps="dxva2api_h"
1681 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1682 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1683 h264_vda_decoder_select="vda h264_parser h264_decoder"
1684 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1685 h264_vda_hwaccel_select="vda h264_decoder"
1686 h264_vdpau_decoder_select="vdpau h264_decoder"
1687 huffyuv_encoder_select="huffman"
1688 iac_decoder_select="fft mdct sinewin"
1689 imc_decoder_select="fft mdct sinewin"
1690 jpegls_decoder_select="golomb"
1691 jpegls_encoder_select="golomb"
1692 ljpeg_encoder_select="aandcttables mpegvideoenc"
1693 loco_decoder_select="golomb"
1694 mdec_decoder_select="error_resilience mpegvideo"
1695 mjpeg_encoder_select="aandcttables mpegvideoenc"
1696 mlp_decoder_select="mlp_parser"
1697 mp1_decoder_select="mpegaudio"
1698 mp1float_decoder_select="mpegaudio"
1699 mp2_decoder_select="mpegaudio"
1700 mp2float_decoder_select="mpegaudio"
1701 mp3_decoder_select="mpegaudio"
1702 mp3adu_decoder_select="mpegaudio"
1703 mp3adufloat_decoder_select="mpegaudio"
1704 mp3float_decoder_select="mpegaudio"
1705 mp3on4_decoder_select="mpegaudio"
1706 mp3on4float_decoder_select="mpegaudio"
1707 mpc7_decoder_select="mpegaudiodsp"
1708 mpc8_decoder_select="mpegaudiodsp"
1709 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1710 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1711 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1712 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1713 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1714 mpeg1video_decoder_select="error_resilience mpegvideo"
1715 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1716 mpeg2_crystalhd_decoder_select="crystalhd"
1717 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1718 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1719 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1720 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1721 mpeg2video_decoder_select="error_resilience mpegvideo"
1722 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1723 mpeg4_crystalhd_decoder_select="crystalhd"
1724 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1725 mpeg4_encoder_select="h263_encoder"
1726 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1727 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1728 msmpeg4_crystalhd_decoder_select="crystalhd"
1729 msmpeg4v1_decoder_select="h263_decoder"
1730 msmpeg4v1_encoder_select="h263_encoder"
1731 msmpeg4v2_decoder_select="h263_decoder"
1732 msmpeg4v2_encoder_select="h263_encoder"
1733 msmpeg4v3_decoder_select="h263_decoder"
1734 msmpeg4v3_encoder_select="h263_encoder"
1735 mss2_decoder_select="vc1_decoder"
1736 nellymoser_decoder_select="mdct sinewin"
1737 nellymoser_encoder_select="mdct sinewin"
1738 nuv_decoder_select="lzo"
1739 png_decoder_select="zlib"
1740 png_encoder_select="zlib"
1741 qcelp_decoder_select="lsp"
1742 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1743 ra_144_encoder_select="lpc"
1744 ralf_decoder_select="golomb"
1745 rv10_decoder_select="h263_decoder"
1746 rv10_encoder_select="h263_encoder"
1747 rv20_decoder_select="h263_decoder"
1748 rv20_encoder_select="h263_encoder"
1749 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1750 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1751 shorten_decoder_select="golomb"
1752 sipr_decoder_select="lsp"
1753 snow_decoder_select="dwt rangecoder"
1754 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1755 sonic_decoder_select="golomb"
1756 sonic_encoder_select="golomb"
1757 sonic_ls_encoder_select="golomb"
1758 svq1_decoder_select="error_resilience mpegvideo"
1759 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1760 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1761 svq3_decoder_suggest="zlib"
1762 theora_decoder_select="vp3_decoder"
1763 tiff_decoder_suggest="zlib"
1764 tiff_encoder_suggest="zlib"
1765 truehd_decoder_select="mlp_parser"
1766 tscc_decoder_select="zlib"
1767 twinvq_decoder_select="mdct lsp sinewin"
1768 utvideo_encoder_select="huffman"
1769 vc1_crystalhd_decoder_select="crystalhd"
1770 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1771 vc1_dxva2_hwaccel_deps="dxva2api_h"
1772 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1773 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1774 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1775 vc1image_decoder_select="vc1_decoder"
1776 vorbis_decoder_select="mdct"
1777 vorbis_encoder_select="mdct"
1778 vp3_decoder_select="vp3dsp"
1779 vp5_decoder_select="vp3dsp"
1780 vp6_decoder_select="huffman vp3dsp"
1781 vp6a_decoder_select="vp6_decoder"
1782 vp6f_decoder_select="vp6_decoder"
1783 vp8_decoder_select="h264pred h264qpel"
1784 wmapro_decoder_select="mdct sinewin"
1785 wmav1_decoder_select="mdct sinewin"
1786 wmav1_encoder_select="mdct sinewin"
1787 wmav2_decoder_select="mdct sinewin"
1788 wmav2_encoder_select="mdct sinewin"
1789 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1790 wmv1_decoder_select="h263_decoder"
1791 wmv1_encoder_select="h263_encoder"
1792 wmv2_decoder_select="h263_decoder"
1793 wmv2_encoder_select="h263_encoder"
1794 wmv3_decoder_select="vc1_decoder"
1795 wmv3_crystalhd_decoder_select="crystalhd"
1796 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1797 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1798 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1799 wmv3image_decoder_select="wmv3_decoder"
1800 zerocodec_decoder_select="zlib"
1801 zlib_decoder_select="zlib"
1802 zlib_encoder_select="zlib"
1803 zmbv_decoder_select="zlib"
1804 zmbv_encoder_select="zlib"
1805
1806 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1807 vaapi_deps="va_va_h"
1808 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1809 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1810
1811 # parsers
1812 h264_parser_select="error_resilience golomb h264dsp h264pred mpegvideo"
1813 mpeg4video_parser_select="error_resilience mpegvideo"
1814 mpegvideo_parser_select="error_resilience mpegvideo"
1815 vc1_parser_select="error_resilience mpegvideo"
1816
1817 # external libraries
1818 libaacplus_encoder_deps="libaacplus"
1819 libcelt_decoder_deps="libcelt"
1820 libfaac_encoder_deps="libfaac"
1821 libfdk_aac_encoder_deps="libfdk_aac"
1822 libgsm_decoder_deps="libgsm"
1823 libgsm_encoder_deps="libgsm"
1824 libgsm_ms_decoder_deps="libgsm"
1825 libgsm_ms_encoder_deps="libgsm"
1826 libilbc_decoder_deps="libilbc"
1827 libilbc_encoder_deps="libilbc"
1828 libmodplug_demuxer_deps="libmodplug"
1829 libmp3lame_encoder_deps="libmp3lame"
1830 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1831 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1832 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1833 libopenjpeg_decoder_deps="libopenjpeg"
1834 libopenjpeg_encoder_deps="libopenjpeg"
1835 libopus_decoder_deps="libopus"
1836 libopus_encoder_deps="libopus"
1837 libschroedinger_decoder_deps="libschroedinger"
1838 libschroedinger_encoder_deps="libschroedinger"
1839 libspeex_decoder_deps="libspeex"
1840 libspeex_encoder_deps="libspeex"
1841 libstagefright_h264_decoder_deps="libstagefright_h264"
1842 libtheora_encoder_deps="libtheora"
1843 libtwolame_encoder_deps="libtwolame"
1844 libvo_aacenc_encoder_deps="libvo_aacenc"
1845 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1846 libvorbis_decoder_deps="libvorbis"
1847 libvorbis_encoder_deps="libvorbis"
1848 libvpx_decoder_deps="libvpx"
1849 libvpx_encoder_deps="libvpx"
1850 libx264_encoder_deps="libx264"
1851 libx264rgb_encoder_deps="libx264"
1852 libxavs_encoder_deps="libxavs"
1853 libxvid_encoder_deps="libxvid"
1854 libutvideo_decoder_deps="libutvideo"
1855 libutvideo_encoder_deps="libutvideo"
1856
1857 # demuxers / muxers
1858 ac3_demuxer_select="ac3_parser"
1859 asf_stream_muxer_select="asf_muxer"
1860 avisynth_demuxer_deps="avisynth"
1861 dirac_demuxer_select="dirac_parser"
1862 dts_demuxer_select="dca_parser"
1863 dtshd_demuxer_select="dca_parser"
1864 eac3_demuxer_select="ac3_parser"
1865 f4v_muxer_select="mov_muxer"
1866 flac_demuxer_select="flac_parser"
1867 ipod_muxer_select="mov_muxer"
1868 ismv_muxer_select="mov_muxer"
1869 libnut_demuxer_deps="libnut"
1870 libnut_muxer_deps="libnut"
1871 matroska_audio_muxer_select="matroska_muxer"
1872 matroska_demuxer_suggest="bzlib lzo zlib"
1873 mov_demuxer_suggest="zlib"
1874 mp3_demuxer_select="mpegaudio_parser"
1875 mp4_muxer_select="mov_muxer"
1876 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1877 mpegtsraw_demuxer_select="mpegts_demuxer"
1878 mxf_d10_muxer_select="mxf_muxer"
1879 ogg_demuxer_select="golomb"
1880 psp_muxer_select="mov_muxer"
1881 rtp_demuxer_select="sdp_demuxer"
1882 rtp_muxer_select="mpegvideo"
1883 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1884 rtsp_demuxer_select="http_protocol rtpdec"
1885 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1886 sap_demuxer_select="sdp_demuxer"
1887 sap_muxer_select="rtp_muxer rtp_protocol"
1888 sdp_demuxer_select="rtpdec"
1889 smoothstreaming_muxer_select="ismv_muxer"
1890 spdif_muxer_select="aac_parser"
1891 tak_demuxer_select="tak_parser"
1892 tg2_muxer_select="mov_muxer"
1893 tgp_muxer_select="mov_muxer"
1894 vobsub_demuxer_select="mpegps_demuxer"
1895 w64_demuxer_deps="wav_demuxer"
1896
1897 # indevs / outdevs
1898 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1899 alsa_outdev_deps="alsa_asoundlib_h"
1900 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1901 caca_outdev_deps="libcaca"
1902 dshow_indev_deps="IBaseFilter"
1903 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1904 dv1394_indev_deps="dv1394 dv_demuxer"
1905 fbdev_indev_deps="linux_fb_h"
1906 iec61883_indev_deps="libiec61883"
1907 jack_indev_deps="jack_jack_h sem_timedwait"
1908 lavfi_indev_deps="avfilter"
1909 libcdio_indev_deps="libcdio"
1910 libdc1394_indev_deps="libdc1394"
1911 libv4l2_indev_deps="libv4l2"
1912 openal_indev_deps="openal"
1913 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1914 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1915 pulse_indev_deps="libpulse"
1916 sdl_outdev_deps="sdl"
1917 sndio_indev_deps="sndio_h"
1918 sndio_outdev_deps="sndio_h"
1919 v4l_indev_deps="linux_videodev_h"
1920 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1921 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1922 vfwcap_indev_extralibs="-lavicap32"
1923 x11grab_indev_deps="x11grab"
1924
1925 # protocols
1926 bluray_protocol_deps="libbluray"
1927 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1928 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1929 ffrtmpcrypt_protocol_select="tcp_protocol"
1930 ffrtmphttp_protocol_deps="!librtmp_protocol"
1931 ffrtmphttp_protocol_select="http_protocol"
1932 gopher_protocol_select="network"
1933 httpproxy_protocol_select="tcp_protocol"
1934 http_protocol_select="tcp_protocol"
1935 https_protocol_select="tls_protocol"
1936 librtmp_protocol_deps="librtmp"
1937 librtmpe_protocol_deps="librtmp"
1938 librtmps_protocol_deps="librtmp"
1939 librtmpt_protocol_deps="librtmp"
1940 librtmpte_protocol_deps="librtmp"
1941 mmsh_protocol_select="http_protocol"
1942 mmst_protocol_select="network"
1943 rtmp_protocol_deps="!librtmp_protocol"
1944 rtmp_protocol_select="tcp_protocol"
1945 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1946 rtmps_protocol_deps="!librtmp_protocol"
1947 rtmps_protocol_select="tls_protocol"
1948 rtmpt_protocol_select="ffrtmphttp_protocol"
1949 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1950 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1951 rtp_protocol_select="udp_protocol"
1952 sctp_protocol_deps="struct_sctp_event_subscribe"
1953 sctp_protocol_select="network"
1954 tcp_protocol_select="network"
1955 tls_protocol_deps_any="openssl gnutls"
1956 tls_protocol_select="tcp_protocol"
1957 udp_protocol_select="network"
1958
1959 # filters
1960 aconvert_filter_deps="swresample"
1961 amovie_filter_deps="avcodec avformat"
1962 aresample_filter_deps="swresample"
1963 ass_filter_deps="libass"
1964 asyncts_filter_deps="avresample"
1965 atempo_filter_deps="avcodec rdft"
1966 blackframe_filter_deps="gpl"
1967 boxblur_filter_deps="gpl"
1968 colormatrix_filter_deps="gpl"
1969 cropdetect_filter_deps="gpl"
1970 decimate_filter_deps="gpl avcodec"
1971 delogo_filter_deps="gpl"
1972 deshake_filter_deps="avcodec"
1973 drawtext_filter_deps="libfreetype"
1974 ebur128_filter_deps="gpl"
1975 flite_filter_deps="libflite"
1976 frei0r_filter_deps="frei0r dlopen"
1977 frei0r_filter_extralibs='$ldl'
1978 frei0r_src_filter_deps="frei0r dlopen"
1979 frei0r_src_filter_extralibs='$ldl'
1980 geq_filter_deps="gpl"
1981 hqdn3d_filter_deps="gpl"
1982 hue_filter_deps="gpl"
1983 movie_filter_deps="avcodec avformat"
1984 mp_filter_deps="gpl avcodec swscale postproc inline_asm"
1985 mptestsrc_filter_deps="gpl"
1986 negate_filter_deps="lut_filter"
1987 resample_filter_deps="avresample"
1988 ocv_filter_deps="libopencv"
1989 pan_filter_deps="swresample"
1990 removelogo_filter_deps="avcodec avformat swscale"
1991 scale_filter_deps="swscale"
1992 smartblur_filter_deps="gpl swscale"
1993 showspectrum_filter_deps="avcodec rdft"
1994 subtitles_filter_deps="avformat avcodec libass"
1995 super2xsai_filter_deps="gpl"
1996 tinterlace_filter_deps="gpl"
1997 yadif_filter_deps="gpl"
1998 pixfmts_super2xsai_test_deps="super2xsai_filter"
1999 tinterlace_merge_test_deps="tinterlace_filter"
2000 tinterlace_pad_test_deps="tinterlace_filter"
2001
2002 # libraries
2003 avcodec_deps="avutil"
2004 avdevice_deps="avutil avcodec avformat"
2005 avfilter_deps="avutil"
2006 avformat_deps="avutil avcodec"
2007 avresample_deps="avutil"
2008 postproc_deps="gpl"
2009 swscale_deps="avutil"
2010
2011 # programs
2012 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2013 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2014                setpts_filter null_filter anull_filter ffabuffersink_filter"
2015 ffplay_deps="avcodec avformat swscale swresample sdl"
2016 ffplay_select="ffbuffersink_filter rdft crop_filter"
2017 ffprobe_deps="avcodec avformat"
2018 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2019 ffserver_extralibs='$ldl'
2020
2021 # documentation
2022 podpages_deps="perl"
2023 manpages_deps="perl pod2man"
2024 htmlpages_deps="texi2html"
2025 txtpages_deps="makeinfo"
2026 doc_deps_any="manpages htmlpages podpages txtpages"
2027
2028 # default parameters
2029
2030 logfile="config.log"
2031
2032 # installation paths
2033 prefix_default="/usr/local"
2034 bindir_default='${prefix}/bin'
2035 datadir_default='${prefix}/share/ffmpeg'
2036 incdir_default='${prefix}/include'
2037 libdir_default='${prefix}/lib'
2038 mandir_default='${prefix}/share/man'
2039 shlibdir_default="$libdir_default"
2040 postproc_version_default="current"
2041
2042 # toolchain
2043 ar_default="ar"
2044 cc_default="gcc"
2045 cxx_default="g++"
2046 host_cc_default="gcc"
2047 cp_f="cp -f"
2048 install="install"
2049 ln_s="ln -sf"
2050 nm_default="nm -g"
2051 objformat="elf"
2052 pkg_config_default=pkg-config
2053 ranlib="ranlib"
2054 strip_default="strip"
2055 yasmexe_default="yasm"
2056
2057 nogas=":"
2058
2059 # machine
2060 arch_default=$(uname -m)
2061 cpu="generic"
2062
2063 # OS
2064 target_os_default=$(tolower $(uname -s))
2065 host_os=$target_os_default
2066
2067 # alternative libpostproc version
2068 ALT_PP_VER_MAJOR=51
2069 ALT_PP_VER_MINOR=2
2070 ALT_PP_VER_MICRO=101
2071 ALT_PP_VER=$ALT_PP_VER_MAJOR.$ALT_PP_VER_MINOR.$ALT_PP_VER_MICRO
2072
2073 # configurable options
2074 enable $PROGRAM_LIST
2075 enable $DOCUMENT_LIST
2076 enable $(filter_out avresample $LIBRARY_LIST)
2077 enable postproc
2078 enable stripping
2079
2080 enable asm
2081 enable debug
2082 enable doc
2083 enable optimizations
2084 enable runtime_cpudetect
2085 enable safe_bitstream_reader
2086 enable static
2087 enable swscale_alpha
2088
2089 # build settings
2090 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2091 FFSERVERLDFLAGS=-Wl,-E
2092 LIBPREF="lib"
2093 LIBSUF=".a"
2094 FULLNAME='$(NAME)$(BUILDSUF)'
2095 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2096 SLIBPREF="lib"
2097 SLIBSUF=".so"
2098 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2099 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2100 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2101 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2102 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2103 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2104
2105 asflags_filter=echo
2106 cflags_filter=echo
2107 ldflags_filter=echo
2108
2109 AS_C='-c'
2110 AS_O='-o $@'
2111 CC_C='-c'
2112 CC_E='-E -o $@'
2113 CC_O='-o $@'
2114 CXX_C='-c'
2115 CXX_O='-o $@'
2116 LD_O='-o $@'
2117 LD_LIB='-l%'
2118 LD_PATH='-L'
2119 HOSTCC_C='-c'
2120 HOSTCC_O='-o $@'
2121 HOSTLD_O='-o $@'
2122
2123 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
2124 host_libs='-lm'
2125 host_cflags_filter=echo
2126 host_ldflags_filter=echo
2127
2128 target_path='$(CURDIR)'
2129
2130 # since the object filename is not given with the -MM flag, the compiler
2131 # is only able to print the basename, and we must add the path ourselves
2132 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2133 DEPFLAGS='-MM'
2134
2135 # find source path
2136 if test -f configure; then
2137     source_path=.
2138 else
2139     source_path=$(cd $(dirname "$0"); pwd)
2140     echo "$source_path" | grep -q '[[:blank:]]' &&
2141         die "Out of tree builds are impossible with whitespace in source path."
2142     test -e "$source_path/config.h" &&
2143         die "Out of tree builds are impossible with config.h in source dir."
2144 fi
2145
2146 for v in "$@"; do
2147     r=${v#*=}
2148     l=${v%"$r"}
2149     r=$(sh_quote "$r")
2150     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2151 done
2152
2153 find_things(){
2154     thing=$1
2155     pattern=$2
2156     file=$source_path/$3
2157     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2158 }
2159
2160 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2161 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2162 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2163 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2164 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2165 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2166 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2167 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2168 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2169 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2170 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2171
2172 ALL_COMPONENTS="
2173     $BSF_LIST
2174     $DECODER_LIST
2175     $DEMUXER_LIST
2176     $ENCODER_LIST
2177     $FILTER_LIST
2178     $HWACCEL_LIST
2179     $INDEV_LIST
2180     $MUXER_LIST
2181     $OUTDEV_LIST
2182     $PARSER_LIST
2183     $PROTOCOL_LIST
2184 "
2185
2186 for n in $COMPONENT_LIST; do
2187     v=$(toupper ${n%s})_LIST
2188     eval enable \$$v
2189     eval ${n}_if_any="\$$v"
2190 done
2191
2192 enable $ARCH_EXT_LIST
2193
2194 die_unknown(){
2195     echo "Unknown option \"$1\"."
2196     echo "See $0 --help for available options."
2197     exit 1
2198 }
2199
2200 show_list() {
2201     suffix=_$1
2202     shift
2203     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
2204     exit 0
2205 }
2206
2207 rand_list(){
2208     IFS=', '
2209     set -- $*
2210     unset IFS
2211     for thing; do
2212         comp=${thing%:*}
2213         prob=${thing#$comp}
2214         prob=${prob#:}
2215         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2216         echo "prob ${prob:-0.5}"
2217         printf '%s\n' $comp
2218     done
2219 }
2220
2221 do_random(){
2222     action=$1
2223     shift
2224     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2225     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2226 }
2227
2228 for opt do
2229     optval="${opt#*=}"
2230     case "$opt" in
2231         --extra-ldflags=*) add_ldflags $optval
2232         ;;
2233         --extra-libs=*) add_extralibs $optval
2234         ;;
2235         --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
2236         ;;
2237         --enable-debug=*) debuglevel="$optval"
2238         ;;
2239         --disable-programs)
2240             disable $PROGRAM_LIST
2241         ;;
2242         --disable-everything)
2243             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2244         ;;
2245         --enable-random|--disable-random)
2246             action=${opt%%-random}
2247             do_random ${action#--} $COMPONENT_LIST
2248         ;;
2249         --enable-random=*|--disable-random=*)
2250             action=${opt%%-random=*}
2251             do_random ${action#--} $optval
2252         ;;
2253         --enable-*=*|--disable-*=*)
2254             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2255             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2256             eval list=\$$(toupper $thing)_LIST
2257             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2258             list=$(filter "$name" $list)
2259             [ "$list" = "" ] && warn "Option $opt did not match anything"
2260             $action $list
2261         ;;
2262         --enable-?*|--disable-?*)
2263             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2264             if is_in $option $COMPONENT_LIST; then
2265                 test $action = disable && action=unset
2266                 eval $action \$$(toupper ${option%s})_LIST
2267             elif is_in $option $CMDLINE_SELECT; then
2268                 $action $option
2269             else
2270                 die_unknown $opt
2271             fi
2272         ;;
2273         --list-*)
2274             NAME="${opt#--list-}"
2275             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2276             NAME=${NAME%s}
2277             eval show_list $NAME \$$(toupper $NAME)_LIST
2278         ;;
2279         --help|-h) show_help
2280         ;;
2281         --fatal-warnings) enable fatal_warnings
2282         ;;
2283         *)
2284             optname="${opt%%=*}"
2285             optname="${optname#--}"
2286             optname=$(echo "$optname" | sed 's/-/_/g')
2287             if is_in $optname $CMDLINE_SET; then
2288                 eval $optname='$optval'
2289             elif is_in $optname $CMDLINE_APPEND; then
2290                 append $optname "$optval"
2291             else
2292                 die_unknown $opt
2293             fi
2294         ;;
2295     esac
2296 done
2297
2298 disabled logging && logfile=/dev/null
2299
2300 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2301 set >> $logfile
2302
2303 test -n "$cross_prefix" && enable cross_compile
2304
2305 if enabled cross_compile; then
2306     test -n "$arch" && test -n "$target_os" ||
2307         die "Must specify target arch and OS when cross-compiling"
2308 fi
2309
2310 set_default postproc_version
2311
2312 # Check if we should build alternative libpostproc version instead of current
2313 if   test "$postproc_version" = $ALT_PP_VER; then
2314   LIBPOSTPROC_VERSION=$ALT_PP_VER
2315   LIBPOSTPROC_VERSION_MAJOR=$ALT_PP_VER_MAJOR
2316   LIBPOSTPROC_VERSION_MINOR=$ALT_PP_VER_MINOR
2317   LIBPOSTPROC_VERSION_MICRO=$ALT_PP_VER_MICRO
2318 elif test "$postproc_version" != current; then
2319   die "Invalid argument to --postproc-version. See --help output."
2320 fi
2321
2322 ar_default="${cross_prefix}${ar_default}"
2323 cc_default="${cross_prefix}${cc_default}"
2324 cxx_default="${cross_prefix}${cxx_default}"
2325 nm_default="${cross_prefix}${nm_default}"
2326 pkg_config_default="${cross_prefix}${pkg_config_default}"
2327 ranlib="${cross_prefix}${ranlib}"
2328 strip_default="${cross_prefix}${strip_default}"
2329
2330 sysinclude_default="${sysroot}/usr/include"
2331
2332 case "$toolchain" in
2333     clang-asan)
2334         cc_default="clang"
2335         add_cflags  -faddress-sanitizer
2336         add_ldflags -faddress-sanitizer
2337     ;;
2338     clang-tsan)
2339         cc_default="clang"
2340         add_cflags  -fthread-sanitizer
2341         add_ldflags -fthread-sanitizer
2342     ;;
2343     msvc)
2344         cc_default="c99wrap cl"
2345         ld_default="c99wrap link"
2346         nm_default="dumpbin -symbols"
2347         ar_default="lib"
2348         target_os_default="win32"
2349     ;;
2350     ?*)
2351         die "Unknown toolchain $toolchain"
2352     ;;
2353 esac
2354
2355 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2356 enabled cross_compile || host_cc_default=$cc
2357 set_default host_cc
2358
2359 if ! $pkg_config --version >/dev/null 2>&1; then
2360     warn "$pkg_config not found, library detection may fail."
2361     pkg_config=false
2362 fi
2363
2364 exesuf() {
2365     case $1 in
2366         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2367     esac
2368 }
2369
2370 EXESUF=$(exesuf $target_os)
2371 HOSTEXESUF=$(exesuf $host_os)
2372
2373 # set temporary file name
2374 : ${TMPDIR:=$TEMPDIR}
2375 : ${TMPDIR:=$TMP}
2376 : ${TMPDIR:=/tmp}
2377
2378 if ! check_cmd mktemp -u XXXXXX; then
2379     # simple replacement for missing mktemp
2380     # NOT SAFE FOR GENERAL USE
2381     mktemp(){
2382         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2383     }
2384 fi
2385
2386 tmpfile(){
2387     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2388         (set -C; exec > $tmp) 2>/dev/null ||
2389         die "Unable to create temporary file in $TMPDIR."
2390     append TMPFILES $tmp
2391     eval $1=$tmp
2392 }
2393
2394 trap 'rm -f -- $TMPFILES' EXIT
2395
2396 tmpfile TMPASM .asm
2397 tmpfile TMPC   .c
2398 tmpfile TMPCPP .cpp
2399 tmpfile TMPE   $EXESUF
2400 tmpfile TMPH   .h
2401 tmpfile TMPO   .o
2402 tmpfile TMPS   .S
2403 tmpfile TMPSH  .sh
2404 tmpfile TMPV   .ver
2405
2406 unset -f mktemp
2407
2408 chmod +x $TMPE
2409
2410 # make sure we can execute files in $TMPDIR
2411 cat > $TMPSH 2>> $logfile <<EOF
2412 #! /bin/sh
2413 EOF
2414 chmod +x $TMPSH >> $logfile 2>&1
2415 if ! $TMPSH >> $logfile 2>&1; then
2416     cat <<EOF
2417 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2418 variable to another directory and make sure that it is not mounted noexec.
2419 EOF
2420     die "Sanity test failed."
2421 fi
2422
2423 ccc_flags(){
2424     for flag; do
2425         case $flag in
2426             -std=c99)           echo -c99                       ;;
2427             -mcpu=*)            echo -arch ${flag#*=}           ;;
2428             -mieee)             echo -ieee                      ;;
2429             -O*|-fast)          echo $flag                      ;;
2430             -fno-math-errno)    echo -assume nomath_errno       ;;
2431             -g)                 echo -g3                        ;;
2432             -Wall)              echo -msg_enable level2         ;;
2433             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2434             -Wl,*)              echo $flag                      ;;
2435             -f*|-W*)                                            ;;
2436             *)                  echo $flag                      ;;
2437         esac
2438    done
2439 }
2440
2441 msvc_flags(){
2442     for flag; do
2443         case $flag in
2444             -fomit-frame-pointer) echo -Oy ;;
2445             -g)                   echo -Z7 ;;
2446             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2447                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2448                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2449                                        -wd4554 \
2450                                        -wd4996 -wd4273 ;;
2451             -std=c99)             ;;
2452             -fno-math-errno)      ;;
2453             -fno-common)          ;;
2454             -fno-signed-zeros)    ;;
2455             -lz)                  echo zlib.lib ;;
2456             -lavifil32)           echo vfw32.lib ;;
2457             -lavicap32)           echo vfw32.lib user32.lib ;;
2458             -l*)                  echo ${flag#-l}.lib ;;
2459             *)                    echo $flag ;;
2460         esac
2461     done
2462 }
2463
2464 pgi_flags(){
2465     for flag; do
2466         case $flag in
2467             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2468             -fomit-frame-pointer) echo -Mnoframe ;;
2469             -g)                   echo -gopt ;;
2470             *)                    echo $flag ;;
2471         esac
2472     done
2473 }
2474
2475 suncc_flags(){
2476     for flag; do
2477         case $flag in
2478             -march=*|-mcpu=*)
2479                 case "${flag#*=}" in
2480                     native)                   echo -xtarget=native       ;;
2481                     v9|niagara)               echo -xarch=sparc          ;;
2482                     ultrasparc)               echo -xarch=sparcvis       ;;
2483                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2484                     i586|pentium)             echo -xchip=pentium        ;;
2485                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2486                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2487                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2488                     pentium4*)          echo -xtarget=pentium4           ;;
2489                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2490                     *-sse3)             echo -xarch=sse3                 ;;
2491                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2492                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2493                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2494                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2495                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2496                     k8|opteron|athlon64|athlon-fx)
2497                                               echo -xarch=sse2a          ;;
2498                     athlon*)                  echo -xarch=pentium_proa   ;;
2499                 esac
2500                 ;;
2501             -std=c99)             echo -xc99              ;;
2502             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2503             -fPIC)                echo -KPIC -xcode=pic32 ;;
2504             -W*,*)                echo $flag              ;;
2505             -f*-*|-W*)                                    ;;
2506             *)                    echo $flag              ;;
2507         esac
2508     done
2509 }
2510
2511 tms470_flags(){
2512     for flag; do
2513         case $flag in
2514             -march=*|-mcpu=*)
2515                 case "${flag#*=}" in
2516                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2517                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2518                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2519                     armv6*|arm11*)          echo -mv=6   ;;
2520                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2521                                             echo -mv=5e  ;;
2522                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2523                 esac
2524                 ;;
2525             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2526             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2527             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2528             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2529             -msoft-float)   echo --float_support=vfplib       ;;
2530             -O[0-3]|-mf=*)  echo $flag                        ;;
2531             -g)             echo -g -mn                       ;;
2532             -pds=*)         echo $flag                        ;;
2533             -D*|-I*)        echo $flag                        ;;
2534             --gcc|--abi=*)  echo $flag                        ;;
2535             -me)            echo $flag                        ;;
2536         esac
2537     done
2538 }
2539
2540 probe_cc(){
2541     pfx=$1
2542     _cc=$2
2543
2544     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2545     unset _ld_o _ldflags _ld_lib _ld_path
2546     unset _depflags _DEPCMD _DEPFLAGS
2547     _flags_filter=echo
2548
2549     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2550         _type=llvm_gcc
2551         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2552         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2553         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2554         _cflags_speed='-O3'
2555         _cflags_size='-Os'
2556     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2557         _type=gcc
2558         gcc_version=$($_cc --version | head -n1)
2559         gcc_basever=$($_cc -dumpversion)
2560         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2561         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2562         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2563         if ! $_cc -dumpversion | grep -q '^2\.'; then
2564             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2565         fi
2566         _cflags_speed='-O3'
2567         _cflags_size='-Os'
2568     elif $_cc --version 2>/dev/null | grep -q Intel; then
2569         _type=icc
2570         _ident=$($_cc --version | head -n1)
2571         _depflags='-MMD'
2572         _cflags_speed='-O3'
2573         _cflags_size='-Os'
2574         _cflags_noopt='-O1'
2575     elif $_cc -v 2>&1 | grep -q xlc; then
2576         _type=xlc
2577         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2578         _cflags_speed='-O5'
2579         _cflags_size='-O5 -qcompact'
2580     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2581         _type=ccc
2582         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2583         _DEPFLAGS='-M'
2584         _cflags_speed='-fast'
2585         _cflags_size='-O1'
2586         _flags_filter=ccc_flags
2587     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2588         test -d "$sysroot" || die "No valid sysroot specified."
2589         _type=armcc
2590         _ident=$($_cc --vsn | head -n1)
2591         armcc_conf="$PWD/armcc.conf"
2592         $_cc --arm_linux_configure                 \
2593              --arm_linux_config_file="$armcc_conf" \
2594              --configure_sysroot="$sysroot"        \
2595              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2596              die "Error creating armcc configuration file."
2597         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2598         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2599         as_default="${cross_prefix}gcc"
2600         _depflags='-MMD'
2601         _cflags_speed='-O3'
2602         _cflags_size='-Os'
2603     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2604         _type=tms470
2605         _ident=$($_cc -version | head -n1 | tr -s ' ')
2606         _flags='--gcc --abi=eabi -me'
2607         _cc_e='-ppl -fe=$@'
2608         _cc_o='-fe=$@'
2609         _depflags='-ppa -ppd=$(@:.o=.d)'
2610         _cflags_speed='-O3 -mf=5'
2611         _cflags_size='-O3 -mf=2'
2612         _flags_filter=tms470_flags
2613     elif $_cc -v 2>&1 | grep -q clang; then
2614         _type=clang
2615         _ident=$($_cc --version | head -n1)
2616         _depflags='-MMD'
2617         _cflags_speed='-O3'
2618         _cflags_size='-Os'
2619     elif $_cc -V 2>&1 | grep -q Sun; then
2620         _type=suncc
2621         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2622         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2623         _DEPFLAGS='-xM1 -xc99'
2624         _ldflags='-std=c99'
2625         _cflags_speed='-O5'
2626         _cflags_size='-O5 -xspace'
2627         _flags_filter=suncc_flags
2628     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2629         _type=pathscale
2630         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2631         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2632         _cflags_speed='-O2'
2633         _cflags_size='-Os'
2634         _flags_filter='filter_out -Wdisabled-optimization'
2635     elif $_cc -v 2>&1 | grep -q Open64; then
2636         _type=open64
2637         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2638         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2639         _cflags_speed='-O2'
2640         _cflags_size='-Os'
2641         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2642     elif $_cc -V 2>&1 | grep -q Portland; then
2643         _type=pgi
2644         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2645         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2646         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2647         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2648         _cflags_noopt="-O1"
2649         _flags_filter=pgi_flags
2650     elif $_cc 2>&1 | grep -q Microsoft; then
2651         _type=msvc
2652         _ident=$($cc 2>&1 | head -n1)
2653         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2654         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2655         _cflags_speed="-O2"
2656         _cflags_size="-O1"
2657         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2658         if $_cc 2>&1 | grep -q Linker; then
2659             _ld_o='-out $@'
2660         else
2661             _ld_o='-Fe$@'
2662         fi
2663         _cc_o='-Fo $@'
2664         _cc_e='-P -Fi $@'
2665         _flags_filter=msvc_flags
2666         _ld_lib='lib%.a'
2667         _ld_path='-libpath:'
2668         _flags='-nologo'
2669         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2670         if [ $pfx = hostcc ]; then
2671             append _cflags -Dsnprintf=_snprintf
2672         fi
2673         disable stripping
2674     fi
2675
2676     eval ${pfx}_type=\$_type
2677     eval ${pfx}_ident=\$_ident
2678 }
2679
2680 set_ccvars(){
2681     eval ${1}_C=\${_cc_c-\${${1}_C}}
2682     eval ${1}_E=\${_cc_e-\${${1}_E}}
2683     eval ${1}_O=\${_cc_o-\${${1}_O}}
2684
2685     if [ -n "$_depflags" ]; then
2686         eval ${1}_DEPFLAGS=\$_depflags
2687     else
2688         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2689         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2690         eval DEP${1}FLAGS=\$_flags
2691     fi
2692 }
2693
2694 probe_cc cc "$cc"
2695 cflags_filter=$_flags_filter
2696 cflags_speed=$_cflags_speed
2697 cflags_size=$_cflags_size
2698 cflags_noopt=$_cflags_noopt
2699 add_cflags $_flags $_cflags
2700 cc_ldflags=$_ldflags
2701 set_ccvars CC
2702
2703 probe_cc hostcc "$host_cc"
2704 host_cflags_filter=$_flags_filter
2705 add_host_cflags  $_flags $_cflags
2706 set_ccvars HOSTCC
2707
2708 test -n "$cc_type" && enable $cc_type ||
2709     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2710
2711 : ${as_default:=$cc}
2712 : ${dep_cc_default:=$cc}
2713 : ${ld_default:=$cc}
2714 : ${host_ld_default:=$host_cc}
2715 set_default ar as dep_cc ld host_ld
2716
2717 probe_cc as "$as"
2718 asflags_filter=$_flags_filter
2719 add_asflags $_flags $_cflags
2720 set_ccvars AS
2721
2722 probe_cc ld "$ld"
2723 ldflags_filter=$_flags_filter
2724 add_ldflags $_flags $_ldflags
2725 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2726 LD_O=${_ld_o-$LD_O}
2727 LD_LIB=${_ld_lib-$LD_LIB}
2728 LD_PATH=${_ld_path-$LD_PATH}
2729
2730 probe_cc hostld "$host_ld"
2731 host_ldflags_filter=$_flags_filter
2732 add_host_ldflags $_flags $_ldflags
2733 HOSTLD_O=${_ld_o-$HOSTLD_O}
2734
2735 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2736     probe_cc depcc "$dep_cc"
2737     CCDEP=${_DEPCMD:-$DEPCMD}
2738     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2739     DEPCCFLAGS=$_flags
2740 fi
2741
2742 if $ar 2>&1 | grep -q Microsoft; then
2743     arflags="-nologo"
2744     ar_o='-out:$@'
2745 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2746     arflags="rq"
2747     ar_o='$@'
2748 else
2749     arflags="rc"
2750     ar_o='$@'
2751 fi
2752
2753 add_cflags $extra_cflags
2754 add_cxxflags $extra_cxxflags
2755 add_asflags $extra_cflags
2756
2757 if test -n "$sysroot"; then
2758     case "$cc_type" in
2759         gcc|llvm_gcc|clang)
2760             add_cppflags --sysroot="$sysroot"
2761             add_ldflags --sysroot="$sysroot"
2762         ;;
2763         tms470)
2764             add_cppflags -I"$sysinclude"
2765             add_ldflags  --sysroot="$sysroot"
2766         ;;
2767     esac
2768 fi
2769
2770 if test "$cpu" = host; then
2771     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2772
2773     case "$cc_type" in
2774         gcc|llvm_gcc)
2775             check_native(){
2776                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2777                 sed -n "/cc1.*$1=/{
2778                             s/.*$1=\\([^ ]*\\).*/\\1/
2779                             p
2780                             q
2781                         }" $TMPE
2782             }
2783             cpu=$(check_native -march || check_native -mcpu)
2784         ;;
2785     esac
2786
2787     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2788 fi
2789
2790 # Deal with common $arch aliases
2791 case "$arch" in
2792     aarch64|arm64)
2793         arch="aarch64"
2794     ;;
2795     arm*|iPad*)
2796         arch="arm"
2797     ;;
2798     mips*|IP*)
2799         arch="mips"
2800     ;;
2801     parisc*|hppa*)
2802         arch="parisc"
2803     ;;
2804     "Power Macintosh"|ppc*|powerpc*)
2805         arch="ppc"
2806     ;;
2807     s390|s390x)
2808         arch="s390"
2809     ;;
2810     sh4|sh)
2811         arch="sh4"
2812     ;;
2813     sun4u|sparc*)
2814         arch="sparc"
2815     ;;
2816     tilegx|tile-gx)
2817         arch="tilegx"
2818     ;;
2819     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2820         arch="x86"
2821     ;;
2822 esac
2823
2824 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2825 enable $arch
2826
2827 # Add processor-specific flags
2828 if enabled aarch64; then
2829
2830     case $cpu in
2831         armv*)
2832             cpuflags="-march=$cpu"
2833         ;;
2834         *)
2835             cpuflags="-mcpu=$cpu"
2836         ;;
2837     esac
2838
2839 elif enabled alpha; then
2840
2841     cpuflags="-mcpu=$cpu"
2842
2843 elif enabled arm; then
2844
2845     check_arm_arch() {
2846         check_cpp_condition stddef.h \
2847             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2848             $cpuflags
2849     }
2850
2851     probe_arm_arch() {
2852         if   check_arm_arch 4;        then echo armv4;
2853         elif check_arm_arch 4T;       then echo armv4t;
2854         elif check_arm_arch 5;        then echo armv5;
2855         elif check_arm_arch 5E;       then echo armv5e;
2856         elif check_arm_arch 5T;       then echo armv5t;
2857         elif check_arm_arch 5TE;      then echo armv5te;
2858         elif check_arm_arch 5TEJ;     then echo armv5te;
2859         elif check_arm_arch 6;        then echo armv6;
2860         elif check_arm_arch 6J;       then echo armv6j;
2861         elif check_arm_arch 6K;       then echo armv6k;
2862         elif check_arm_arch 6Z;       then echo armv6z;
2863         elif check_arm_arch 6ZK;      then echo armv6zk;
2864         elif check_arm_arch 6T2;      then echo armv6t2;
2865         elif check_arm_arch 7;        then echo armv7;
2866         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2867         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2868         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2869         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2870         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2871         fi
2872     }
2873
2874     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2875
2876     case $cpu in
2877         armv*)
2878             cpuflags="-march=$cpu"
2879             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2880         ;;
2881         *)
2882             cpuflags="-mcpu=$cpu"
2883             case $cpu in
2884                 cortex-a*)                               subarch=armv7a  ;;
2885                 cortex-r*)                               subarch=armv7r  ;;
2886                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2887                 arm11*)                                  subarch=armv6   ;;
2888                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2889                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2890                 *)                             subarch=$(probe_arm_arch) ;;
2891             esac
2892         ;;
2893     esac
2894
2895     case "$subarch" in
2896         armv5t*)    enable fast_clz                ;;
2897         armv[6-8]*) enable fast_clz fast_unaligned ;;
2898     esac
2899
2900 elif enabled avr32; then
2901
2902     case $cpu in
2903         ap7[02]0[0-2])
2904             subarch="avr32_ap"
2905             cpuflags="-mpart=$cpu"
2906         ;;
2907         ap)
2908             subarch="avr32_ap"
2909             cpuflags="-march=$cpu"
2910         ;;
2911         uc3[ab]*)
2912             subarch="avr32_uc"
2913             cpuflags="-mcpu=$cpu"
2914         ;;
2915         uc)
2916             subarch="avr32_uc"
2917             cpuflags="-march=$cpu"
2918         ;;
2919     esac
2920
2921 elif enabled bfin; then
2922
2923     cpuflags="-mcpu=$cpu"
2924
2925 elif enabled mips; then
2926
2927     cpuflags="-march=$cpu"
2928
2929     case $cpu in
2930         24kc)
2931             disable mipsfpu
2932             disable mipsdspr1
2933             disable mipsdspr2
2934         ;;
2935         24kf*)
2936             disable mipsdspr1
2937             disable mipsdspr2
2938         ;;
2939         24kec|34kc|1004kc)
2940             disable mipsfpu
2941             disable mipsdspr2
2942         ;;
2943         24kef*|34kf*|1004kf*)
2944             disable mipsdspr2
2945         ;;
2946         74kc)
2947             disable mipsfpu
2948         ;;
2949     esac
2950
2951 elif enabled ppc; then
2952
2953     case $(tolower $cpu) in
2954         601|ppc601|powerpc601)
2955             cpuflags="-mcpu=601"
2956             disable altivec
2957         ;;
2958         603*|ppc603*|powerpc603*)
2959             cpuflags="-mcpu=603"
2960             disable altivec
2961         ;;
2962         604*|ppc604*|powerpc604*)
2963             cpuflags="-mcpu=604"
2964             disable altivec
2965         ;;
2966         g3|75*|ppc75*|powerpc75*)
2967             cpuflags="-mcpu=750"
2968             disable altivec
2969         ;;
2970         g4|745*|ppc745*|powerpc745*)
2971             cpuflags="-mcpu=7450"
2972         ;;
2973         74*|ppc74*|powerpc74*)
2974             cpuflags="-mcpu=7400"
2975         ;;
2976         g5|970|ppc970|powerpc970)
2977             cpuflags="-mcpu=970"
2978         ;;
2979         power[3-7]*)
2980             cpuflags="-mcpu=$cpu"
2981         ;;
2982         cell)
2983             cpuflags="-mcpu=cell"
2984             enable ldbrx
2985         ;;
2986         e500mc)
2987             cpuflags="-mcpu=e500mc"
2988             disable altivec
2989         ;;
2990         e500v2)
2991             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2992             disable altivec
2993         ;;
2994         e500)
2995             cpuflags="-mcpu=8540 -mhard-float"
2996             disable altivec
2997         ;;
2998     esac
2999
3000 elif enabled sparc; then
3001
3002     case $cpu in
3003         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3004             cpuflags="-mcpu=$cpu"
3005             disable vis
3006         ;;
3007         ultrasparc*|niagara[234])
3008             cpuflags="-mcpu=$cpu"
3009         ;;
3010     esac
3011
3012 elif enabled x86; then
3013
3014     case $cpu in
3015         i[345]86|pentium)
3016             cpuflags="-march=$cpu"
3017             disable mmx
3018         ;;
3019         # targets that do NOT support conditional mov (cmov)
3020         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3021             cpuflags="-march=$cpu"
3022             disable cmov
3023         ;;
3024         # targets that do support conditional mov (cmov)
3025         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3026             cpuflags="-march=$cpu"
3027             enable cmov
3028             enable fast_cmov
3029         ;;
3030         # targets that do support conditional mov but on which it's slow
3031         pentium4|pentium4m|prescott|nocona)
3032             cpuflags="-march=$cpu"
3033             enable cmov
3034             disable fast_cmov
3035         ;;
3036     esac
3037
3038 fi
3039
3040 if [ "$cpu" != generic ]; then
3041     add_cflags  $cpuflags
3042     add_asflags $cpuflags
3043 fi
3044
3045 # compiler sanity check
3046 check_exec <<EOF
3047 int main(void){ return 0; }
3048 EOF
3049 if test "$?" != 0; then
3050     echo "$cc is unable to create an executable file."
3051     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3052         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3053         echo "Only do this if you know what cross compiling means."
3054     fi
3055     die "C compiler test failed."
3056 fi
3057
3058 add_cppflags -D_ISOC99_SOURCE
3059 add_cxxflags -D__STDC_CONSTANT_MACROS
3060 check_cflags -std=c99
3061 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3062 #include <stdlib.h>
3063 EOF
3064 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3065 #include <stdlib.h>
3066 EOF
3067
3068 check_host_cflags -std=c99
3069 check_host_cflags -Wall
3070
3071 check_64bit(){
3072     arch32=$1
3073     arch64=$2
3074     expr=$3
3075     check_code cc "" "int test[2*($expr) - 1]" &&
3076         subarch=$arch64 || subarch=$arch32
3077 }
3078
3079 case "$arch" in
3080     alpha|ia64)
3081         spic=$shared
3082     ;;
3083     mips)
3084         check_64bit mips mips64 '_MIPS_SIM > 1'
3085         spic=$shared
3086     ;;
3087     parisc)
3088         check_64bit parisc parisc64 'sizeof(void *) > 4'
3089         spic=$shared
3090     ;;
3091     ppc)
3092         check_64bit ppc ppc64 'sizeof(void *) > 4'
3093         spic=$shared
3094     ;;
3095     sparc)
3096         check_64bit sparc sparc64 'sizeof(void *) > 4'
3097         spic=$shared
3098     ;;
3099     x86)
3100         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3101         if test "$subarch" = "x86_64"; then
3102             spic=$shared
3103         fi
3104     ;;
3105     ppc)
3106         check_cc <<EOF && subarch="ppc64"
3107         int test[(int)sizeof(char*) - 7];
3108 EOF
3109     ;;
3110 esac
3111
3112 enable $subarch
3113 enabled spic && enable pic
3114
3115 # OS specific
3116 case $target_os in
3117     haiku)
3118         prefix_default="/boot/common"
3119         network_extralibs="-lnetwork"
3120         host_libs=
3121         ;;
3122     sunos)
3123         FFSERVERLDFLAGS=""
3124         SHFLAGS='-shared -Wl,-h,$$(@F)'
3125         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3126         network_extralibs="-lsocket -lnsl"
3127         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3128         # When using suncc to build, the Solaris linker will mark
3129         # an executable with each instruction set encountered by
3130         # the Solaris assembler.  As our libraries contain their own
3131         # guards for processor-specific code, instead suppress
3132         # generation of the HWCAPS ELF section on Solaris x86 only.
3133         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3134         nm_default='nm -P -g'
3135         ;;
3136     netbsd)
3137         disable symver
3138         oss_indev_extralibs="-lossaudio"
3139         oss_outdev_extralibs="-lossaudio"
3140         enabled gcc || check_ldflags -Wl,-zmuldefs
3141         ;;
3142     openbsd|bitrig)
3143         # On OpenBSD 4.5. the compiler does not use PIC unless
3144         # explicitly using -fPIC. FFmpeg builds fine without PIC,
3145         # however the generated executable will not do anything
3146         # (simply quits with exit-code 1, no crash, no output).
3147         # Thus explicitly enable PIC here.
3148         enable pic
3149         disable symver
3150         SHFLAGS='-shared'
3151         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
3152         SLIB_INSTALL_LINKS=
3153         oss_indev_extralibs="-lossaudio"
3154         oss_outdev_extralibs="-lossaudio"
3155         ;;
3156     dragonfly)
3157         disable symver
3158         ;;
3159     freebsd)
3160         ;;
3161     bsd/os)
3162         add_extralibs -lpoll -lgnugetopt
3163         strip="strip -d"
3164         ;;
3165     darwin)
3166         gas="gas-preprocessor.pl $cc"
3167         enabled ppc && add_asflags -force_cpusubtype_ALL
3168         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3169         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3170         strip="${strip} -x"
3171         add_ldflags -Wl,-dynamic,-search_paths_first
3172         SLIBSUF=".dylib"
3173         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3174         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3175         FFSERVERLDFLAGS=-Wl,-bind_at_load
3176         objformat="macho"
3177         enabled x86_64 && objformat="macho64"
3178         enabled_any pic shared ||
3179             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3180         ;;
3181     mingw32*)
3182         if test $target_os = "mingw32ce"; then
3183             disable network
3184         else
3185             target_os=mingw32
3186         fi
3187         LIBTARGET=i386
3188         if enabled x86_64; then
3189             LIBTARGET="i386:x86-64"
3190         elif enabled arm; then
3191             LIBTARGET=arm-wince
3192         fi
3193         shlibdir_default="$bindir_default"
3194         SLIBPREF=""
3195         SLIBSUF=".dll"
3196         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3197         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3198         dlltool="${cross_prefix}dlltool"
3199         if check_cmd lib.exe -list; then
3200             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3201             if enabled x86_64; then
3202                 LIBTARGET=x64
3203             fi
3204         elif check_cmd $dlltool --version; then
3205             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3206         fi
3207         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3208         SLIB_INSTALL_LINKS=
3209         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3210         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3211         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3212         objformat="win32"
3213         ranlib=:
3214         enable dos_paths
3215         add_cppflags -U__STRICT_ANSI__
3216         ;;
3217     win32|win64)
3218         if enabled shared; then
3219             # Link to the import library instead of the normal static library
3220             # for shared libs.
3221             LD_LIB='%.lib'
3222             # Cannot build shared and static libraries at the same time with
3223             # MSVC.
3224             disable static
3225         fi
3226         shlibdir_default="$bindir_default"
3227         SLIBPREF=""
3228         SLIBSUF=".dll"
3229         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3230         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3231         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3232         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3233         SLIB_INSTALL_LINKS=
3234         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3235         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3236         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3237         objformat="win32"
3238         ranlib=:
3239         enable dos_paths
3240         ;;
3241     cygwin*)
3242         target_os=cygwin
3243         shlibdir_default="$bindir_default"
3244         SLIBPREF="cyg"
3245         SLIBSUF=".dll"
3246         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3247         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3248         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3249         SLIB_INSTALL_LINKS=
3250         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3251         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3252         objformat="win32"
3253         enable dos_paths
3254         ;;
3255     *-dos|freedos|opendos)
3256         network_extralibs="-lsocket"
3257         objformat="coff"
3258         enable dos_paths
3259         add_cppflags -U__STRICT_ANSI__
3260         ;;
3261     linux)
3262         enable dv1394
3263         ;;
3264     irix*)
3265         target_os=irix
3266         ranlib="echo ignoring ranlib"
3267         ;;
3268     os/2*)
3269         strip="lxlite -CS"
3270         ln_s="cp -f"
3271         objformat="aout"
3272         add_cppflags -D_GNU_SOURCE
3273         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3274         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3275         FFSERVERLDFLAGS=""
3276         LIBSUF="_s.a"
3277         SLIBPREF=""
3278         SLIBSUF=".dll"
3279         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3280         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3281         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3282             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3283             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3284             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3285             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3286             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3287         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3288             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3289         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3290         enable dos_paths
3291         enable_weak os2threads
3292         ;;
3293     gnu/kfreebsd)
3294         add_cppflags -D_BSD_SOURCE
3295         ;;
3296     gnu)
3297         ;;
3298     qnx)
3299         add_cppflags -D_QNX_SOURCE
3300         network_extralibs="-lsocket"
3301         ;;
3302     symbian)
3303         SLIBSUF=".dll"
3304         enable dos_paths
3305         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3306         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3307         add_ldflags -Wl,--target1-abs,--no-undefined \
3308                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3309                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3310         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3311                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3312                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3313         ;;
3314     osf1)
3315         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3316         FFSERVERLDFLAGS=
3317         ;;
3318     minix)
3319         ;;
3320     plan9)
3321         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3322                      -D_REENTRANT_SOURCE        \
3323                      -D_RESEARCH_SOURCE         \
3324                      -DFD_SETSIZE=96            \
3325                      -DHAVE_SOCK_OPTS
3326         add_compat strtod.o strtod=avpriv_strtod
3327         network_extralibs='-lbsd'
3328         exeobjs=compat/plan9/main.o
3329         disable ffserver
3330         ln_s='ln -s -f'
3331         cp_f='cp'
3332         ;;
3333     none)
3334         ;;
3335     *)
3336         die "Unknown OS '$target_os'."
3337         ;;
3338 esac
3339
3340 # determine libc flavour
3341
3342 if check_cpp_condition features.h "defined __UCLIBC__"; then
3343     libc_type=uclibc
3344     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3345 elif check_cpp_condition features.h "defined __GLIBC__"; then
3346     libc_type=glibc
3347     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3348 elif check_header _mingw.h; then
3349     libc_type=mingw
3350     check_cpp_condition _mingw.h \
3351         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3352             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3353         die "ERROR: MinGW runtime version must be >= 3.15."
3354     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3355             __MINGW64_VERSION_MAJOR < 3"; then
3356         add_compat msvcrt/snprintf.o
3357         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3358     fi
3359 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3360     libc_type=newlib
3361     add_cppflags -U__STRICT_ANSI__
3362 elif check_func_headers stdlib.h _get_doserrno; then
3363     libc_type=msvcrt
3364     add_compat strtod.o strtod=avpriv_strtod
3365     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3366                                  _snprintf=avpriv_snprintf  \
3367                                  vsnprintf=avpriv_vsnprintf
3368 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3369     libc_type=klibc
3370 fi
3371
3372 test -n "$libc_type" && enable $libc_type
3373
3374 # hacks for compiler/libc/os combinations
3375
3376 if enabled_all tms470 glibc; then
3377     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3378     add_cppflags -D__USER_LABEL_PREFIX__=
3379     add_cppflags -D__builtin_memset=memset
3380     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3381     add_cflags   -pds=48    # incompatible redefinition of macro
3382 fi
3383
3384 if enabled_all ccc glibc; then
3385     add_ldflags -Wl,-z,now  # calls to libots crash without this
3386 fi
3387
3388 esc(){
3389     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3390 }
3391
3392 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3393
3394 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3395
3396 set_default $PATHS_LIST
3397 set_default nm
3398
3399 # we need to build at least one lib type
3400 if ! enabled_any static shared; then
3401     cat <<EOF
3402 At least one library type must be built.
3403 Specify --enable-static to build the static libraries or --enable-shared to
3404 build the shared libraries as well. To only build the shared libraries specify
3405 --disable-static in addition to --enable-shared.
3406 EOF
3407     exit 1;
3408 fi
3409
3410 die_license_disabled() {
3411     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3412 }
3413
3414 die_license_disabled_gpl() {
3415     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3416 }
3417
3418 die_license_disabled gpl libcdio
3419 die_license_disabled gpl libutvideo
3420 die_license_disabled gpl libx264
3421 die_license_disabled gpl libxavs
3422 die_license_disabled gpl libxvid
3423 die_license_disabled gpl x11grab
3424
3425 die_license_disabled nonfree libaacplus
3426 die_license_disabled nonfree libfaac
3427 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3428 enabled gpl && die_license_disabled_gpl nonfree openssl
3429
3430 die_license_disabled version3 libopencore_amrnb
3431 die_license_disabled version3 libopencore_amrwb
3432 die_license_disabled version3 libvo_aacenc
3433 die_license_disabled version3 libvo_amrwbenc
3434
3435 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3436
3437 disabled optimizations || check_cflags -fomit-frame-pointer
3438
3439 enable_pic() {
3440     enable pic
3441     add_cppflags -DPIC
3442     add_cflags   -fPIC
3443     add_asflags  -fPIC
3444 }
3445
3446 enabled pic && enable_pic
3447
3448 check_cc <<EOF || die "Symbol mangling check failed."
3449 int ff_extern;
3450 EOF
3451 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3452 extern_prefix=${sym%%ff_extern*}
3453
3454 check_cc <<EOF && enable_weak inline_asm
3455 void foo(void) { __asm__ volatile ("" ::); }
3456 EOF
3457
3458 _restrict=
3459 for restrict_keyword in restrict __restrict__ __restrict; do
3460     check_cc <<EOF && _restrict=$restrict_keyword && break
3461 void foo(char * $restrict_keyword p);
3462 EOF
3463 done
3464
3465 check_cc <<EOF && enable attribute_packed
3466 struct { int x; } __attribute__((packed)) x;
3467 EOF
3468
3469 check_cc <<EOF && enable attribute_may_alias
3470 union { int x; } __attribute__((may_alias)) x;
3471 EOF
3472
3473 check_cc <<EOF || die "endian test failed"
3474 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3475 EOF
3476 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3477
3478 if enabled alpha; then
3479
3480     check_cflags -mieee
3481
3482 elif enabled arm; then
3483
3484     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3485 float func(float a, float b){ return a+b; }
3486 EOF
3487
3488     enabled thumb && check_cflags -mthumb || check_cflags -marm
3489     nogas=die
3490
3491     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3492         enable vfp_args
3493     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3494         case "${cross_prefix:-$cc}" in
3495             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3496             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3497 __asm__ (".eabi_attribute 28, 1");
3498 int main(void) { return 0; }
3499 EOF
3500         esac
3501         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3502     fi
3503
3504     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3505     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3506     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3507     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3508     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3509     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3510
3511     [ $target_os = linux ] ||
3512         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3513             $ARCH_EXT_LIST_ARM
3514
3515     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3516     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3517
3518     enabled_all armv6t2 shared !pic && enable_pic
3519
3520 elif enabled mips; then
3521
3522     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3523     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3524      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3525     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3526      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3527     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3528      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3529     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3530      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3531
3532 elif enabled parisc; then
3533
3534     if enabled gcc; then
3535         case $($cc -dumpversion) in
3536             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3537         esac
3538     fi
3539
3540 elif enabled ppc; then
3541
3542     enable local_aligned_8 local_aligned_16
3543
3544     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3545     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3546     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3547     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3548
3549     # AltiVec flags: The FSF version of GCC differs from the Apple version
3550     if enabled altivec; then
3551         nogas=warn
3552         check_cflags -maltivec -mabi=altivec &&
3553         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3554         check_cflags -faltivec
3555
3556         # check if our compiler supports Motorola AltiVec C API
3557         check_cc <<EOF || disable altivec
3558 $inc_altivec_h
3559 int main(void) {
3560     vector signed int v1 = (vector signed int) { 0 };
3561     vector signed int v2 = (vector signed int) { 1 };
3562     v1 = vec_add(v1, v2);
3563     return 0;
3564 }
3565 EOF
3566
3567         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3568     fi
3569
3570 elif enabled sparc; then
3571
3572     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3573
3574 elif enabled x86; then
3575
3576     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3577
3578     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3579
3580     enable local_aligned_8 local_aligned_16
3581
3582     # check whether EBP is available on x86
3583     # As 'i' is stored on the stack, this program will crash
3584     # if the base pointer is used to access it because the
3585     # base pointer is cleared in the inline assembly code.
3586     check_exec_crash <<EOF && enable ebp_available
3587 volatile int i=0;
3588 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3589 return i;
3590 EOF
3591
3592     # check whether EBX is available on x86
3593     check_inline_asm ebx_available '""::"b"(0)' &&
3594         check_inline_asm ebx_available '"":::"%ebx"'
3595
3596     # check whether xmm clobbers are supported
3597     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3598
3599     # check whether binutils is new enough to compile SSSE3/MMXEXT
3600     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3601     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3602
3603     if ! disabled_any asm mmx yasm; then
3604         if check_cmd $yasmexe --version; then
3605             enabled x86_64 && yasm_extra="-m amd64"
3606             yasm_debug="-g dwarf2"
3607         elif check_cmd nasm -v; then
3608             yasmexe=nasm
3609             yasm_debug="-g -F dwarf"
3610             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3611         fi
3612
3613         YASMFLAGS="-f $objformat $yasm_extra"
3614         enabled pic               && append YASMFLAGS "-DPIC"
3615         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3616         case "$objformat" in
3617             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3618         esac
3619
3620         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3621             die "yasm not found, use --disable-yasm for a crippled build"
3622         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3623         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3624         check_yasm "CPU amdnop" && enable cpunop
3625     fi
3626
3627     case "$cpu" in
3628         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3629             disable fast_clz
3630         ;;
3631     esac
3632
3633 fi
3634
3635 if enabled asm; then
3636     as=${gas:=$as}
3637     check_as <<EOF && enable gnu_as || \
3638         $nogas "GNU assembler not found, install gas-preprocessor"
3639 .macro m n
3640 \n: .int 0
3641 .endm
3642 m x
3643 EOF
3644 fi
3645
3646 check_ldflags -Wl,--as-needed
3647
3648 if check_func dlopen; then
3649     ldl=
3650 elif check_func dlopen -ldl; then
3651     ldl=-ldl
3652 fi
3653
3654 if ! disabled network; then
3655     check_type "sys/types.h sys/socket.h" socklen_t
3656     check_type netdb.h "struct addrinfo"
3657     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3658     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3659     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3660     check_type netinet/in.h "struct sockaddr_in6"
3661     check_type poll.h "struct pollfd"
3662     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3663     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3664     check_type netinet/sctp.h "struct sctp_event_subscribe"
3665     check_func getaddrinfo $network_extralibs
3666     check_func getservbyport $network_extralibs
3667     # Prefer arpa/inet.h over winsock2
3668     if check_header arpa/inet.h ; then
3669         check_func closesocket
3670     elif check_header winsock2.h ; then
3671         check_func_headers winsock2.h closesocket -lws2 &&
3672             network_extralibs="-lws2" ||
3673         { check_func_headers winsock2.h closesocket -lws2_32 &&
3674             network_extralibs="-lws2_32"; }
3675         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3676         check_type ws2tcpip.h socklen_t
3677         check_type ws2tcpip.h "struct addrinfo"
3678         check_type ws2tcpip.h "struct group_source_req"
3679         check_type ws2tcpip.h "struct ip_mreq_source"
3680         check_type ws2tcpip.h "struct ipv6_mreq"
3681         check_type winsock2.h "struct pollfd"
3682         check_type ws2tcpip.h "struct sockaddr_in6"
3683         check_type ws2tcpip.h "struct sockaddr_storage"
3684         check_struct winsock2.h "struct sockaddr" sa_len
3685     else
3686         disable network
3687     fi
3688 fi
3689
3690 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3691 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3692
3693 check_func  access
3694 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3695 check_func  fcntl
3696 check_func  fork
3697 check_func  gethrtime
3698 check_func  getopt
3699 check_func  getrusage
3700 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3701 check_func  gettimeofday
3702 check_func  inet_aton $network_extralibs
3703 check_func  isatty
3704 check_func  localtime_r
3705 check_func  ${malloc_prefix}memalign            && enable memalign
3706 check_func  mkstemp
3707 check_func  mmap
3708 check_func  mprotect
3709 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3710 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3711 check_func  setrlimit
3712 check_func  strerror_r
3713 check_func  sched_getaffinity
3714 check_func  sysconf
3715 check_func  sysctl
3716 check_func  usleep
3717 check_func_headers conio.h kbhit
3718 check_func_headers windows.h PeekNamedPipe
3719 check_func_headers io.h setmode
3720 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3721 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3722 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3723 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3724 check_func_headers windows.h GetProcessAffinityMask
3725 check_func_headers windows.h GetProcessTimes
3726 check_func_headers windows.h GetSystemTimeAsFileTime
3727 check_func_headers windows.h MapViewOfFile
3728 check_func_headers windows.h SetConsoleTextAttribute
3729 check_func_headers windows.h Sleep
3730 check_func_headers windows.h VirtualAlloc
3731 check_func_headers glob.h glob
3732
3733 check_header direct.h
3734 check_header dlfcn.h
3735 check_header dxva.h
3736 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3737 check_header io.h
3738 check_header libcrystalhd/libcrystalhd_if.h
3739 check_header malloc.h
3740 check_header poll.h
3741 check_header sys/mman.h
3742 check_header sys/param.h
3743 check_header sys/resource.h
3744 check_header sys/select.h
3745 check_header sys/time.h
3746 check_header termios.h
3747 check_header unistd.h
3748 check_header vdpau/vdpau.h
3749 check_header vdpau/vdpau_x11.h
3750 check_header windows.h
3751 check_header X11/extensions/XvMClib.h
3752 check_header asm/types.h
3753
3754 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3755 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3756
3757 # check for VDA header
3758 if ! disabled vda && ! enabled ppc; then
3759     if check_header VideoDecodeAcceleration/VDADecoder.h; then
3760         enable vda
3761         add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3762     fi
3763 fi
3764
3765 if ! disabled w32threads && ! enabled pthreads; then
3766     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3767 fi
3768
3769 # check for some common methods of building with pthread support
3770 # do this before the optional library checks as some of them require pthreads
3771 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3772     enable pthreads
3773     if check_func pthread_create; then
3774         :
3775     elif check_func pthread_create -pthread; then
3776         add_cflags -pthread
3777         add_extralibs -pthread
3778     elif check_func pthread_create -pthreads; then
3779         add_cflags -pthreads
3780         add_extralibs -pthreads
3781     elif check_func pthread_create -lpthreadGC2; then
3782         add_extralibs -lpthreadGC2
3783     elif ! check_lib pthread.h pthread_create -lpthread; then
3784         disable pthreads
3785     fi
3786 fi
3787
3788 for thread in $THREADS_LIST; do
3789     if enabled $thread; then
3790         test -n "$thread_type" &&
3791             die "ERROR: Only one thread type must be selected." ||
3792             thread_type="$thread"
3793     fi
3794 done
3795
3796 if enabled pthreads; then
3797   check_func pthread_cancel
3798 fi
3799
3800 check_lib math.h sin -lm && LIBM="-lm"
3801 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3802 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3803
3804 atan2f_args=2
3805 ldexpf_args=2
3806 powf_args=2
3807
3808 for func in $MATH_FUNCS; do
3809     eval check_mathfunc $func \${${func}_args:-1}
3810 done
3811
3812 # these are off by default, so fail if requested and not available
3813 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3814 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3815 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3816 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3817 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3818 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3819 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3820 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3821 enabled libcdio    && require2 libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3822 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3823                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3824                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3825 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3826 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3827 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3828 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"
3829 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3830 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3831 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
3832 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3833 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3834 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3835 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3836 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3837 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3838 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3839 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3840 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3841 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3842 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3843 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3844 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3845 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3846 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3847     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3848     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3849 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3850 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3851                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3852                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3853 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3854 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3855 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3856 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3857 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3858 enabled libvpx     && {
3859     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3860                                 die "ERROR: libvpx decoder must be installed and version must be >=0.9.1"; }
3861     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
3862                                 die "ERROR: libvpx encoder version must be >=0.9.7"; } }
3863 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3864                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3865                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3866 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3867 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3868 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3869                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3870                         die "ERROR: openal not found"; } &&
3871                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3872                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3873 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3874                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3875                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3876                         die "ERROR: openssl not found"; }
3877
3878 if enabled gnutls; then
3879     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3880     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3881 fi
3882
3883 # libdc1394 check
3884 if enabled libdc1394; then
3885     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3886         enable libdc1394_2; } ||
3887     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3888         enable libdc1394_1; } ||
3889     die "ERROR: No version of libdc1394 found "
3890 fi
3891
3892 SDL_CONFIG="${cross_prefix}sdl-config"
3893 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3894     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3895     enable sdl &&
3896     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3897 else
3898   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3899     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3900     sdl_libs=$("${SDL_CONFIG}" --libs)
3901     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3902     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3903     enable sdl &&
3904     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3905   fi
3906 fi
3907 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3908
3909 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3910 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3911 perl --version > /dev/null 2>&1 && enable perl || disable perl
3912 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3913
3914 check_header linux/fb.h
3915 check_header linux/videodev.h
3916 check_header linux/videodev2.h
3917 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3918
3919 check_header sys/videoio.h
3920
3921 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3922 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3923 # w32api 3.12 had it defined wrong
3924 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3925
3926 check_type "dshow.h" IBaseFilter
3927
3928 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3929 { check_header dev/bktr/ioctl_meteor.h &&
3930   check_header dev/bktr/ioctl_bt848.h; } ||
3931 { check_header machine/ioctl_meteor.h &&
3932   check_header machine/ioctl_bt848.h; } ||
3933 { check_header dev/video/meteor/ioctl_meteor.h &&
3934   check_header dev/video/bktr/ioctl_bt848.h; } ||
3935 check_header dev/ic/bt8xx.h
3936
3937 check_header sndio.h
3938 if check_struct sys/soundcard.h audio_buf_info bytes; then
3939     enable_safe sys/soundcard.h
3940 else
3941     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3942     #include <sys/soundcard.h>
3943     audio_buf_info abc;
3944 EOF
3945 fi
3946 check_header soundcard.h
3947
3948 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3949
3950 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3951     check_func jack_port_get_latency_range -ljack
3952
3953 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3954
3955
3956 enabled x11grab                                           &&
3957 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3958 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3959 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3960
3961 if ! disabled vaapi; then
3962     check_lib va/va.h vaInitialize -lva && {
3963         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3964         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3965     } || disable vaapi
3966 fi
3967
3968 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3969     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3970         { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." && disable vdpau; }
3971 fi
3972
3973 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3974 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
3975 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"
3976
3977 # add some useful compiler flags if supported
3978 check_cflags -Wdeclaration-after-statement
3979 check_cflags -Wall
3980 check_cflags -Wno-parentheses
3981 check_cflags -Wno-switch
3982 check_cflags -Wno-format-zero-length
3983 check_cflags -Wdisabled-optimization
3984 check_cflags -Wpointer-arith
3985 check_cflags -Wredundant-decls
3986 check_cflags -Wno-pointer-sign
3987 check_cflags -Wwrite-strings
3988 check_cflags -Wtype-limits
3989 check_cflags -Wundef
3990 check_cflags -Wmissing-prototypes
3991 check_cflags -Wno-pointer-to-int-cast
3992 check_cflags -Wstrict-prototypes
3993 enabled extra_warnings && check_cflags -Winline
3994
3995 # add some linker flags
3996 check_ldflags -Wl,--warn-common
3997 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3998 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3999
4000 enabled xmm_clobber_test &&
4001     check_ldflags -Wl,--wrap,avcodec_open2              \
4002                   -Wl,--wrap,avcodec_decode_audio4      \
4003                   -Wl,--wrap,avcodec_decode_video2      \
4004                   -Wl,--wrap,avcodec_decode_subtitle2   \
4005                   -Wl,--wrap,avcodec_encode_audio2      \
4006                   -Wl,--wrap,avcodec_encode_video       \
4007                   -Wl,--wrap,avcodec_encode_subtitle    \
4008                   -Wl,--wrap,sws_scale ||
4009     disable xmm_clobber_test
4010
4011 echo "X{};" > $TMPV
4012 if test_ldflags -Wl,--version-script,$TMPV; then
4013     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4014     check_cc <<EOF && enable symver_asm_label
4015 void ff_foo(void) __asm__ ("av_foo@VERSION");
4016 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4017 EOF
4018     check_cc <<EOF && enable symver_gnu_asm
4019 __asm__(".symver ff_foo,av_foo@VERSION");
4020 void ff_foo(void) {}
4021 EOF
4022 fi
4023
4024 if [ -z "$optflags" ]; then
4025     if enabled small; then
4026         optflags=$cflags_size
4027     elif enabled optimizations; then
4028         optflags=$cflags_speed
4029     else
4030         optflags=$cflags_noopt
4031     fi
4032 fi
4033
4034 check_optflags(){
4035     check_cflags "$@"
4036     enabled lto && check_ldflags "$@"
4037 }
4038
4039
4040 if enabled lto; then
4041     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4042     check_cflags  -flto
4043     check_ldflags -flto $cpuflags
4044 fi
4045
4046 check_optflags $optflags
4047 check_optflags -fno-math-errno
4048 check_optflags -fno-signed-zeros
4049
4050 enabled ftrapv && check_cflags -ftrapv
4051
4052 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4053 int x;
4054 EOF
4055
4056
4057 if enabled icc; then
4058     # Just warnings, no remarks
4059     check_cflags -w1
4060     # -wd: Disable following warnings
4061     # 144, 167, 556: -Wno-pointer-sign
4062     # 1292: attribute "foo" ignored
4063     # 1419: external declaration in primary source file
4064     # 10006: ignoring unknown option -fno-signed-zeros
4065     # 10148: ignoring unknown option -Wno-parentheses
4066     # 10156: ignoring option '-W'; no argument required
4067     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4068     # 11030: Warning unknown option --as-needed
4069     # 10156: ignoring option '-export'; no argument required
4070     check_ldflags -wd10156,11030
4071     # Allow to compile with optimizations
4072     check_ldflags -march=$cpu
4073     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4074     enable ebp_available
4075     if enabled x86_32; then
4076         icc_version=$($cc -dumpversion)
4077         test ${icc_version%%.*} -ge 11 &&
4078             check_cflags -falign-stack=maintain-16-byte ||
4079             disable aligned_stack
4080     fi
4081 elif enabled ccc; then
4082     # disable some annoying warnings
4083     add_cflags -msg_disable bitnotint
4084     add_cflags -msg_disable mixfuncvoid
4085     add_cflags -msg_disable nonstandcast
4086     add_cflags -msg_disable unsupieee
4087 elif enabled gcc; then
4088     check_optflags -fno-tree-vectorize
4089     check_cflags -Werror=implicit-function-declaration
4090     check_cflags -Werror=missing-prototypes
4091     check_cflags -Werror=vla
4092 elif enabled llvm_gcc; then
4093     check_cflags -mllvm -stack-alignment=16
4094 elif enabled clang; then
4095     check_cflags -mllvm -stack-alignment=16
4096     check_cflags -Qunused-arguments
4097     check_cflags -Werror=implicit-function-declaration
4098     check_cflags -Werror=missing-prototypes
4099 elif enabled armcc; then
4100     # 2523: use of inline assembler is deprecated
4101     add_cflags -W${armcc_opt},--diag_suppress=2523
4102     add_cflags -W${armcc_opt},--diag_suppress=1207
4103     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4104     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4105     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4106     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4107 elif enabled tms470; then
4108     add_cflags -pds=824 -pds=837
4109 elif enabled pathscale; then
4110     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4111 elif enabled msvc; then
4112     enabled x86_32 && disable aligned_stack
4113 fi
4114
4115 case $target_os in
4116     osf1)
4117         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4118     ;;
4119     plan9)
4120         add_cppflags -Dmain=plan9_main
4121     ;;
4122 esac
4123
4124 enabled_any $THREADS_LIST      && enable threads
4125
4126 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4127
4128 check_deps $CONFIG_LIST       \
4129            $CONFIG_EXTRA      \
4130            $HAVE_LIST         \
4131            $ALL_COMPONENTS    \
4132
4133
4134 if test $target_os = "haiku"; then
4135     disable memalign
4136     disable posix_memalign
4137 fi
4138
4139 ! enabled_any memalign posix_memalign aligned_malloc &&
4140     enabled_any $need_memalign && enable memalign_hack
4141
4142 # add_dep lib dep
4143 # -> enable ${lib}_deps_${dep}
4144 # -> add $dep to ${lib}_deps only once
4145 add_dep() {
4146     lib=$1
4147     dep=$2
4148     enabled "${lib}_deps_${dep}" && return 0
4149     enable  "${lib}_deps_${dep}"
4150     prepend "${lib}_deps" $dep
4151 }
4152
4153 # merge deps lib components
4154 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4155 merge_deps() {
4156     lib=$1
4157     shift
4158     for comp in $*; do
4159         enabled $comp || continue
4160         eval "dep=\"\$${comp}_deps\""
4161         for d in $dep; do
4162             add_dep $lib $d
4163         done
4164     done
4165 }
4166
4167 merge_deps libavfilter $FILTER_LIST
4168
4169 echo "install prefix            $prefix"
4170 echo "source path               $source_path"
4171 echo "C compiler                $cc"
4172 echo "ARCH                      $arch ($cpu)"
4173 if test "$build_suffix" != ""; then
4174     echo "build suffix              $build_suffix"
4175 fi
4176 if test "$progs_suffix" != ""; then
4177     echo "progs suffix              $progs_suffix"
4178 fi
4179 if test "$extra_version" != ""; then
4180     echo "version string suffix     $extra_version"
4181 fi
4182 echo "big-endian                ${bigendian-no}"
4183 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4184 if enabled x86; then
4185     echo "${yasmexe}                      ${yasm-no}"
4186     echo "MMX enabled               ${mmx-no}"
4187     echo "MMXEXT enabled            ${mmxext-no}"
4188     echo "3DNow! enabled            ${amd3dnow-no}"
4189     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4190     echo "SSE enabled               ${sse-no}"
4191     echo "SSSE3 enabled             ${ssse3-no}"
4192     echo "AVX enabled               ${avx-no}"
4193     echo "FMA4 enabled              ${fma4-no}"
4194     echo "CMOV enabled              ${cmov-no}"
4195     echo "CMOV is fast              ${fast_cmov-no}"
4196     echo "EBX available             ${ebx_available-no}"
4197     echo "EBP available             ${ebp_available-no}"
4198 fi
4199 if enabled arm; then
4200     echo "ARMv5TE enabled           ${armv5te-no}"
4201     echo "ARMv6 enabled             ${armv6-no}"
4202     echo "ARMv6T2 enabled           ${armv6t2-no}"
4203     echo "VFP enabled               ${vfp-no}"
4204     echo "NEON enabled              ${neon-no}"
4205 fi
4206 if enabled mips; then
4207     echo "MIPS FPU enabled          ${mipsfpu-no}"
4208     echo "MIPS32R2 enabled          ${mips32r2-no}"
4209     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4210     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4211 fi
4212 if enabled ppc; then
4213     echo "AltiVec enabled           ${altivec-no}"
4214     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4215     echo "dcbzl available           ${dcbzl-no}"
4216 fi
4217 if enabled sparc; then
4218     echo "VIS enabled               ${vis-no}"
4219 fi
4220 echo "debug symbols             ${debug-no}"
4221 echo "strip symbols             ${stripping-no}"
4222 echo "optimize for size         ${small-no}"
4223 echo "optimizations             ${optimizations-no}"
4224 echo "static                    ${static-no}"
4225 echo "shared                    ${shared-no}"
4226 echo "postprocessing support    ${postproc-no}"
4227 echo "new filter support        ${avfilter-no}"
4228 echo "network support           ${network-no}"
4229 echo "threading support         ${thread_type-no}"
4230 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4231 echo "SDL support               ${sdl-no}"
4232 echo "libdxva2 enabled          ${dxva2-no}"
4233 echo "libva enabled             ${vaapi-no}"
4234 echo "libvdpau enabled          ${vdpau-no}"
4235 echo "AVISynth enabled          ${avisynth-no}"
4236 echo "frei0r enabled            ${frei0r-no}"
4237 echo "gnutls enabled            ${gnutls-no}"
4238 echo "libaacplus enabled        ${libaacplus-no}"
4239 echo "libass enabled            ${libass-no}"
4240 echo "libcaca enabled           ${libcaca-no}"
4241 echo "libcdio support           ${libcdio-no}"
4242 echo "libcelt enabled           ${libcelt-no}"
4243 echo "libdc1394 support         ${libdc1394-no}"
4244 echo "libfaac enabled           ${libfaac-no}"
4245 echo "libfdk-aac enabled        ${libfdk_aac-no}"
4246 echo "libgsm enabled            ${libgsm-no}"
4247 echo "libiec61883 support       ${libiec61883-no}"
4248 echo "libilbc enabled           ${libilbc-no}"
4249 echo "libmodplug enabled        ${libmodplug-no}"
4250 echo "libmp3lame enabled        ${libmp3lame-no}"
4251 echo "libnut enabled            ${libnut-no}"
4252 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
4253 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
4254 echo "libopencv support         ${libopencv-no}"
4255 echo "libopenjpeg enabled       ${libopenjpeg-no}"
4256 echo "libopus enabled           ${libopus-no}"
4257 echo "libpulse enabled          ${libpulse-no}"
4258 echo "librtmp enabled           ${librtmp-no}"
4259 echo "libschroedinger enabled   ${libschroedinger-no}"
4260 echo "libsoxr enabled           ${libsoxr-no}"
4261 echo "libspeex enabled          ${libspeex-no}"
4262 echo "libstagefright-h264 enabled    ${libstagefright_h264-no}"
4263 echo "libtheora enabled         ${libtheora-no}"
4264 echo "libtwolame enabled        ${libtwolame-no}"
4265 echo "libutvideo enabled        ${libutvideo-no}"
4266 echo "libv4l2 enabled           ${libv4l2-no}"
4267 echo "libvo-aacenc support      ${libvo_aacenc-no}"
4268 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
4269 echo "libvorbis enabled         ${libvorbis-no}"
4270 echo "libvpx enabled            ${libvpx-no}"
4271 echo "libx264 enabled           ${libx264-no}"
4272 echo "libxavs enabled           ${libxavs-no}"
4273 echo "libxvid enabled           ${libxvid-no}"
4274 echo "openal enabled            ${openal-no}"
4275 echo "openssl enabled           ${openssl-no}"
4276 echo "zlib enabled              ${zlib-no}"
4277 echo "bzlib enabled             ${bzlib-no}"
4278 echo "texi2html enabled         ${texi2html-no}"
4279 echo "perl enabled              ${perl-no}"
4280 echo "pod2man enabled           ${pod2man-no}"
4281 echo "makeinfo enabled          ${makeinfo-no}"
4282 test -n "$random_seed" &&
4283     echo "random seed               ${random_seed}"
4284 echo
4285
4286 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4287     echo "Enabled ${type}s:"
4288     eval list=\$$(toupper $type)_LIST
4289     print_enabled '_*' $list | sort | pr -r -3 -t
4290     echo
4291 done
4292
4293 license="LGPL version 2.1 or later"
4294 if enabled nonfree; then
4295     license="nonfree and unredistributable"
4296 elif enabled gplv3; then
4297     license="GPL version 3 or later"
4298 elif enabled lgplv3; then
4299     license="LGPL version 3 or later"
4300 elif enabled gpl; then
4301     license="GPL version 2 or later"
4302 fi
4303
4304 echo "License: $license"
4305
4306 echo "Creating config.mak and config.h..."
4307
4308 test -e Makefile || $ln_s "$source_path/Makefile" .
4309
4310 enabled stripping || strip="echo skipping strip"
4311
4312 config_files="$TMPH config.mak"
4313
4314 cat > config.mak <<EOF
4315 # Automatically generated by configure - do not modify!
4316 ifndef FFMPEG_CONFIG_MAK
4317 FFMPEG_CONFIG_MAK=1
4318 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4319 prefix=$prefix
4320 LIBDIR=\$(DESTDIR)$libdir
4321 SHLIBDIR=\$(DESTDIR)$shlibdir
4322 INCDIR=\$(DESTDIR)$incdir
4323 BINDIR=\$(DESTDIR)$bindir
4324 DATADIR=\$(DESTDIR)$datadir
4325 MANDIR=\$(DESTDIR)$mandir
4326 SRC_PATH=$source_path
4327 ifndef MAIN_MAKEFILE
4328 SRC_PATH:=\$(SRC_PATH:.%=..%)
4329 endif
4330 CC_IDENT=$cc_ident
4331 ARCH=$arch
4332 CC=$cc
4333 CXX=$cxx
4334 AS=$as
4335 LD=$ld
4336 DEPCC=$dep_cc
4337 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4338 DEPAS=$as
4339 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4340 YASM=$yasmexe
4341 DEPYASM=$yasmexe
4342 AR=$ar
4343 ARFLAGS=$arflags
4344 AR_O=$ar_o
4345 RANLIB=$ranlib
4346 CP=cp -p
4347 LN_S=$ln_s
4348 STRIP=$strip
4349 CPPFLAGS=$CPPFLAGS
4350 CFLAGS=$CFLAGS
4351 CXXFLAGS=$CXXFLAGS
4352 ASFLAGS=$ASFLAGS
4353 AS_C=$AS_C
4354 AS_O=$AS_O
4355 CC_C=$CC_C
4356 CC_E=$CC_E
4357 CC_O=$CC_O
4358 CXX_C=$CXX_C
4359 CXX_O=$CXX_O
4360 LD_O=$LD_O
4361 LD_LIB=$LD_LIB
4362 LD_PATH=$LD_PATH
4363 DLLTOOL=$dlltool
4364 LDFLAGS=$LDFLAGS
4365 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4366 SHFLAGS=$SHFLAGS
4367 YASMFLAGS=$YASMFLAGS
4368 BUILDSUF=$build_suffix
4369 PROGSSUF=$progs_suffix
4370 FULLNAME=$FULLNAME
4371 LIBPREF=$LIBPREF
4372 LIBSUF=$LIBSUF
4373 LIBNAME=$LIBNAME
4374 SLIBPREF=$SLIBPREF
4375 SLIBSUF=$SLIBSUF
4376 EXESUF=$EXESUF
4377 EXTRA_VERSION=$extra_version
4378 CCDEP=$CCDEP
4379 CXXDEP=$CXXDEP
4380 CCDEP_FLAGS=$CCDEP_FLAGS
4381 ASDEP=$ASDEP
4382 ASDEP_FLAGS=$ASDEP_FLAGS
4383 CC_DEPFLAGS=$CC_DEPFLAGS
4384 AS_DEPFLAGS=$AS_DEPFLAGS
4385 HOSTCC=$host_cc
4386 HOSTLD=$host_ld
4387 HOSTCFLAGS=$host_cflags
4388 HOSTEXESUF=$HOSTEXESUF
4389 HOSTLDFLAGS=$host_ldflags
4390 HOSTLIBS=$host_libs
4391 DEPHOSTCC=$host_cc
4392 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4393 HOSTCCDEP=$HOSTCCDEP
4394 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4395 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4396 HOSTCC_C=$HOSTCC_C
4397 HOSTCC_O=$HOSTCC_O
4398 HOSTLD_O=$HOSTLD_O
4399 TARGET_EXEC=$target_exec
4400 TARGET_PATH=$target_path
4401 LIBS-ffplay=$sdl_libs
4402 CFLAGS-ffplay=$sdl_cflags
4403 ZLIB=$($ldflags_filter -lz)
4404 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4405 EXTRALIBS=$extralibs
4406 COMPAT_OBJS=$compat_objs
4407 EXEOBJS=$exeobjs
4408 INSTALL=$install
4409 LIBTARGET=${LIBTARGET}
4410 SLIBNAME=${SLIBNAME}
4411 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4412 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4413 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4414 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4415 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4416 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4417 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4418 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4419 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4420 NOREDZONE_FLAGS=$noredzone_flags
4421 EOF
4422
4423 get_version(){
4424     lcname=lib${1}
4425     name=$(toupper $lcname)
4426     file=$source_path/$lcname/version.h
4427     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4428     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4429     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4430     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4431 }
4432
4433 get_version_old(){
4434     name=$1
4435     file=$source_path/$2
4436 # This condition will be removed when we stop supporting old libpostproc versions
4437 if ! test "$name" = LIBPOSTPROC || test "$postproc_version" = current; then
4438     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
4439     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4440 fi
4441     lcname=$(tolower $name)
4442     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4443     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4444 }
4445
4446 get_version_old LIBPOSTPROC libpostproc/version.h
4447
4448 map 'get_version $v' $LIBRARY_LIST
4449
4450 cat > $TMPH <<EOF
4451 /* Automatically generated by configure - do not modify! */
4452 #ifndef FFMPEG_CONFIG_H
4453 #define FFMPEG_CONFIG_H
4454 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4455 #define FFMPEG_LICENSE "$(c_escape $license)"
4456 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4457 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4458 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4459 #define av_restrict $_restrict
4460 #define EXTERN_PREFIX "${extern_prefix}"
4461 #define EXTERN_ASM ${extern_prefix}
4462 #define SLIBSUF "$SLIBSUF"
4463 #define HAVE_MMX2 HAVE_MMXEXT
4464 EOF
4465
4466 test -n "$assert_level" &&
4467     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4468
4469 test -n "$malloc_prefix" &&
4470     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4471
4472 if enabled yasm; then
4473     append config_files $TMPASM
4474     printf '' >$TMPASM
4475 fi
4476
4477 print_config ARCH_   "$config_files" $ARCH_LIST
4478 print_config HAVE_   "$config_files" $HAVE_LIST
4479 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4480                                      $CONFIG_EXTRA      \
4481                                      $ALL_COMPONENTS    \
4482
4483 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4484 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4485
4486 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4487 cp_if_changed $TMPH config.h
4488 touch .config
4489
4490 enabled yasm && cp_if_changed $TMPASM config.asm
4491
4492 cat > $TMPH <<EOF
4493 /* Generated by ffconf */
4494 #ifndef AVUTIL_AVCONFIG_H
4495 #define AVUTIL_AVCONFIG_H
4496 EOF
4497
4498 test "$postproc_version" != current && cat >> $TMPH <<EOF
4499 #define LIBPOSTPROC_VERSION_MAJOR $LIBPOSTPROC_VERSION_MAJOR
4500 #define LIBPOSTPROC_VERSION_MINOR $LIBPOSTPROC_VERSION_MINOR
4501 #define LIBPOSTPROC_VERSION_MICRO $LIBPOSTPROC_VERSION_MICRO
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