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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89
  90 Licensing options:
  91   --enable-gpl             allow use of GPL code, the resulting libs
  92                            and binaries will be under GPL [no]
  93   --enable-version3        upgrade (L)GPL to version 3 [no]
  94   --enable-nonfree         allow use of nonfree code, the resulting libs
  95                            and binaries will be unredistributable [no]
  96
  97 Configuration options:
  98   --disable-static         do not build static libraries [no]
  99   --enable-shared          build shared libraries [no]
 100   --enable-small           optimize for size instead of speed
 101   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 102   --enable-gray            enable full grayscale support (slower color)
 103   --disable-swscale-alpha  disable alpha channel support in swscale
 104   --disable-all            disable building components, libraries and programs
 105
 106 Program options:
 107   --disable-programs       do not build command line programs
 108   --disable-ffmpeg         disable ffmpeg build
 109   --disable-ffplay         disable ffplay build
 110   --disable-ffprobe        disable ffprobe build
 111   --disable-ffserver       disable ffserver build
 112
 113 Documentation options:
 114   --disable-doc            do not build documentation
 115   --disable-htmlpages      do not build HTML documentation pages
 116   --disable-manpages       do not build man documentation pages
 117   --disable-podpages       do not build POD documentation pages
 118   --disable-txtpages       do not build text documentation pages
 119
 120 Component options:
 121   --disable-avdevice       disable libavdevice build
 122   --disable-avcodec        disable libavcodec build
 123   --disable-avformat       disable libavformat build
 124   --disable-avutil         disable libavutil build
 125   --disable-swresample     disable libswresample build
 126   --disable-swscale        disable libswscale build
 127   --disable-postproc       disable libpostproc build
 128   --disable-avfilter       disable libavfilter build
 129   --enable-avresample      enable libavresample build [no]
 130   --disable-pthreads       disable pthreads [auto]
 131   --disable-w32threads     disable Win32 threads [auto]
 132   --disable-os2threads     disable OS/2 threads [auto]
 133   --enable-x11grab         enable X11 grabbing [no]
 134   --disable-network        disable network support [no]
 135   --disable-dct            disable DCT code
 136   --disable-dwt            disable DWT code
 137   --disable-lsp            disable LSP code
 138   --disable-lzo            disable LZO decoder code
 139   --disable-mdct           disable MDCT code
 140   --disable-rdft           disable RDFT code
 141   --disable-fft            disable FFT code
 142
 143 Hardware accelerators:
 144   --enable-dxva2           enable DXVA2 code
 145   --enable-vaapi           enable VAAPI code [autodetect]
 146   --enable-vda             enable VDA code   [autodetect]
 147   --enable-vdpau           enable VDPAU code [autodetect]
 148
 149 Individual component options:
 150   --disable-everything     disable all components listed below
 151   --disable-encoder=NAME   disable encoder NAME
 152   --enable-encoder=NAME    enable encoder NAME
 153   --disable-encoders       disable all encoders
 154   --disable-decoder=NAME   disable decoder NAME
 155   --enable-decoder=NAME    enable decoder NAME
 156   --disable-decoders       disable all decoders
 157   --disable-hwaccel=NAME   disable hwaccel NAME
 158   --enable-hwaccel=NAME    enable hwaccel NAME
 159   --disable-hwaccels       disable all hwaccels
 160   --disable-muxer=NAME     disable muxer NAME
 161   --enable-muxer=NAME      enable muxer NAME
 162   --disable-muxers         disable all muxers
 163   --disable-demuxer=NAME   disable demuxer NAME
 164   --enable-demuxer=NAME    enable demuxer NAME
 165   --disable-demuxers       disable all demuxers
 166   --enable-parser=NAME     enable parser NAME
 167   --disable-parser=NAME    disable parser NAME
 168   --disable-parsers        disable all parsers
 169   --enable-bsf=NAME        enable bitstream filter NAME
 170   --disable-bsf=NAME       disable bitstream filter NAME
 171   --disable-bsfs           disable all bitstream filters
 172   --enable-protocol=NAME   enable protocol NAME
 173   --disable-protocol=NAME  disable protocol NAME
 174   --disable-protocols      disable all protocols
 175   --enable-indev=NAME      enable input device NAME
 176   --disable-indev=NAME     disable input device NAME
 177   --disable-indevs         disable input devices
 178   --enable-outdev=NAME     enable output device NAME
 179   --disable-outdev=NAME    disable output device NAME
 180   --disable-outdevs        disable output devices
 181   --disable-devices        disable all devices
 182   --enable-filter=NAME     enable filter NAME
 183   --disable-filter=NAME    disable filter NAME
 184   --disable-filters        disable all filters
 185
 186 External library support:
 187   --enable-avisynth        enable reading of AVISynth script files [no]
 188   --enable-bzlib           enable bzlib [autodetect]
 189   --enable-fontconfig      enable fontconfig
 190   --enable-frei0r          enable frei0r video filtering
 191   --enable-gnutls          enable gnutls [no]
 192   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 193   --enable-libass          enable libass subtitles rendering [no]
 194   --enable-libbluray       enable BluRay reading using libbluray [no]
 195   --enable-libcaca         enable textual display using libcaca
 196   --enable-libcelt         enable CELT decoding via libcelt [no]
 197   --enable-libcdio         enable audio CD grabbing with libcdio
 198   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 199                            and libraw1394 [no]
 200   --enable-libfaac         enable AAC encoding via libfaac [no]
 201   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 202   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 203   --enable-libfreetype     enable libfreetype [no]
 204   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 205   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 206   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 207   --enable-libmodplug      enable ModPlug via libmodplug [no]
 208   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 209   --enable-libnut          enable NUT (de)muxing via libnut,
 210                            native (de)muxer exists [no]
 211   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 212   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 213   --enable-libopencv       enable video filtering via libopencv [no]
 214   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 215   --enable-libopus         enable Opus decoding via libopus [no]
 216   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 217   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 218   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 219   --enable-libsoxr         enable Include libsoxr resampling [no]
 220   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 221   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 222   --enable-libtheora       enable Theora encoding via libtheora [no]
 223   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 224   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 225   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 226   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 227   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 228   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 229                            native implementation exists [no]
 230   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 231   --enable-libx264         enable H.264 encoding via x264 [no]
 232   --enable-libxavs         enable AVS encoding via xavs [no]
 233   --enable-libxvid         enable Xvid encoding via xvidcore,
 234                            native MPEG-4/Xvid encoder exists [no]
 235   --enable-openal          enable OpenAL 1.1 capture support [no]
 236   --enable-openssl         enable openssl [no]
 237   --enable-zlib            enable zlib [autodetect]
 238
 239 Advanced options (experts only):
 240   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 241   --enable-cross-compile   assume a cross-compiler is used
 242   --sysroot=PATH           root of cross-build tree
 243   --sysinclude=PATH        location of cross-build system headers
 244   --target-os=OS           compiler targets OS [$target_os]
 245   --target-exec=CMD        command to run executables on target
 246   --target-path=DIR        path to view of build directory on target
 247   --toolchain=NAME         set tool defaults according to NAME
 248   --nm=NM                  use nm tool NM [$nm_default]
 249   --ar=AR                  use archive tool AR [$ar_default]
 250   --as=AS                  use assembler AS [$as_default]
 251   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 252   --cc=CC                  use C compiler CC [$cc_default]
 253   --cxx=CXX                use C compiler CXX [$cxx_default]
 254   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 255   --ld=LD                  use linker LD [$ld_default]
 256   --host-cc=HOSTCC         use host C compiler HOSTCC
 257   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 258   --host-ld=HOSTLD         use host linker HOSTLD
 259   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 260   --host-libs=HLIBS        use libs HLIBS when linking for host
 261   --host-os=OS             compiler host OS [$target_os]
 262   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 263   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 264   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 265   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 266   --extra-version=STRING   version string suffix []
 267   --optflags=OPTFLAGS      override optimization-related compiler flags
 268   --build-suffix=SUFFIX    library name suffix []
 269   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 270   --progs-suffix=SUFFIX    program name suffix []
 271   --arch=ARCH              select architecture [$arch]
 272   --cpu=CPU                select the minimum required CPU (affects
 273                            instruction selection, may crash on older CPUs)
 274   --enable-pic             build position-independent code
 275   --enable-sram            allow use of on-chip SRAM
 276   --enable-thumb           compile for Thumb instruction set
 277   --disable-symver         disable symbol versioning
 278   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 279   --disable-safe-bitstream-reader
 280                            disable buffer boundary checking in bitreaders
 281                            (faster, but may crash)
 282   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 283   --enable-lto             use link-time optimization
 284
 285 Optimization options (experts only):
 286   --disable-asm            disable all assembler optimizations
 287   --disable-altivec        disable AltiVec optimizations
 288   --disable-amd3dnow       disable 3DNow! optimizations
 289   --disable-amd3dnowext    disable 3DNow! extended optimizations
 290   --disable-mmx            disable MMX optimizations
 291   --disable-mmxext         disable MMXEXT optimizations
 292   --disable-sse            disable SSE optimizations
 293   --disable-sse2           disable SSE2 optimizations
 294   --disable-sse3           disable SSE3 optimizations
 295   --disable-ssse3          disable SSSE3 optimizations
 296   --disable-sse4           disable SSE4 optimizations
 297   --disable-sse42          disable SSE4.2 optimizations
 298   --disable-avx            disable AVX optimizations
 299   --disable-fma4           disable FMA4 optimizations
 300   --disable-armv5te        disable armv5te optimizations
 301   --disable-armv6          disable armv6 optimizations
 302   --disable-armv6t2        disable armv6t2 optimizations
 303   --disable-vfp            disable VFP optimizations
 304   --disable-neon           disable NEON optimizations
 305   --disable-vis            disable VIS optimizations
 306   --disable-inline-asm     disable use of inline assembler
 307   --disable-yasm           disable use of yasm assembler
 308   --disable-mips32r2       disable MIPS32R2 optimizations
 309   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 310   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 311   --disable-mipsfpu        disable floating point MIPS optimizations
 312   --disable-fast-unaligned consider unaligned accesses slow
 313
 314 Developer options (useful when working on FFmpeg itself):
 315   --enable-coverage        build with test coverage instrumentation
 316   --disable-debug          disable debugging symbols
 317   --enable-debug=LEVEL     set the debug level [$debuglevel]
 318   --disable-optimizations  disable compiler optimizations
 319   --enable-extra-warnings  enable more compiler warnings
 320   --disable-stripping      disable stripping of executables and shared libraries
 321   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 322                            2 causes a slowdown at runtime.
 323   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 324   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 325                            leaks and errors, using the specified valgrind binary.
 326                            Cannot be combined with --target-exec
 327   --enable-ftrapv          Trap arithmetic overflows
 328   --samples=PATH           location of test samples for FATE, if not set use
 329                            \$FATE_SAMPLES at make invocation time.
 330   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 331                            should be used only for debugging purposes)
 332   --enable-random          randomly enable/disable components
 333   --disable-random
 334   --enable-random=LIST     randomly enable/disable specific components or
 335   --disable-random=LIST    component groups. LIST is a comma-separated list
 336                            of NAME[:PROB] entries where NAME is a component
 337                            (group) and PROB the probability associated with
 338                            NAME (default 0.5).
 339   --random-seed=VALUE      seed value for --enable/disable-random
 340
 341 NOTE: Object files are built at the place where configure is launched.
 342 EOF
 343   exit 0
 344 }
 345
 346 quotes='""'
 347
 348 log(){
 349     echo "$@" >> $logfile
 350 }
 351
 352 log_file(){
 353     log BEGIN $1
 354     pr -n -t $1 >> $logfile
 355     log END $1
 356 }
 357
 358 echolog(){
 359     log "$@"
 360     echo "$@"
 361 }
 362
 363 warn(){
 364     log "WARNING: $*"
 365     WARNINGS="${WARNINGS}WARNING: $*\n"
 366 }
 367
 368 die(){
 369     echolog "$@"
 370     cat <<EOF
 371
 372 If you think configure made a mistake, make sure you are using the latest
 373 version from Git.  If the latest version fails, report the problem to the
 374 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 375 EOF
 376     if disabled logging; then
 377         cat <<EOF
 378 Rerun configure with logging enabled (do not use --disable-logging), and
 379 include the log this produces with your report.
 380 EOF
 381     else
 382         cat <<EOF
 383 Include the log file "$logfile" produced by configure as this will help
 384 solving the problem.
 385 EOF
 386     fi
 387     exit 1
 388 }
 389
 390 # Avoid locale weirdness, besides we really just want to translate ASCII.
 391 toupper(){
 392     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 393 }
 394
 395 tolower(){
 396     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 397 }
 398
 399 c_escape(){
 400     echo "$*" | sed 's/["\\]/\\\0/g'
 401 }
 402
 403 sh_quote(){
 404     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 405     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 406     echo "$v"
 407 }
 408
 409 cleanws(){
 410     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 411 }
 412
 413 filter(){
 414     pat=$1
 415     shift
 416     for v; do
 417         eval "case $v in $pat) echo $v ;; esac"
 418     done
 419 }
 420
 421 filter_out(){
 422     pat=$1
 423     shift
 424     for v; do
 425         eval "case $v in $pat) ;; *) echo $v ;; esac"
 426     done
 427 }
 428
 429 map(){
 430     m=$1
 431     shift
 432     for v; do eval $m; done
 433 }
 434
 435 add_suffix(){
 436     suffix=$1
 437     shift
 438     for v; do echo ${v}${suffix}; done
 439 }
 440
 441 set_all(){
 442     value=$1
 443     shift
 444     for var in $*; do
 445         eval $var=$value
 446     done
 447 }
 448
 449 set_weak(){
 450     value=$1
 451     shift
 452     for var; do
 453         eval : \${$var:=$value}
 454     done
 455 }
 456
 457 set_safe(){
 458     var=$1
 459     shift
 460     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 461 }
 462
 463 get_safe(){
 464     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 465 }
 466
 467 pushvar(){
 468     for var in $*; do
 469         eval level=\${${var}_level:=0}
 470         eval ${var}_${level}="\$$var"
 471         eval ${var}_level=$(($level+1))
 472     done
 473 }
 474
 475 popvar(){
 476     for var in $*; do
 477         eval level=\${${var}_level:-0}
 478         test $level = 0 && continue
 479         eval level=$(($level-1))
 480         eval $var="\${${var}_${level}}"
 481         eval ${var}_level=$level
 482         eval unset ${var}_${level}
 483     done
 484 }
 485
 486 enable(){
 487     set_all yes $*
 488 }
 489
 490 disable(){
 491     set_all no $*
 492 }
 493
 494 enable_weak(){
 495     set_weak yes $*
 496 }
 497
 498 disable_weak(){
 499     set_weak no $*
 500 }
 501
 502 enable_safe(){
 503     for var; do
 504         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 505     done
 506 }
 507
 508 disable_safe(){
 509     for var; do
 510         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 511     done
 512 }
 513
 514 do_enable_deep(){
 515     for var; do
 516         enabled $var && continue
 517         eval sel="\$${var}_select"
 518         eval sgs="\$${var}_suggest"
 519         pushvar var sgs
 520         enable_deep $sel
 521         popvar sgs
 522         enable_deep_weak $sgs
 523         popvar var
 524     done
 525 }
 526
 527 enable_deep(){
 528     do_enable_deep $*
 529     enable $*
 530 }
 531
 532 enable_deep_weak(){
 533     do_enable_deep $*
 534     enable_weak $*
 535 }
 536
 537 enabled(){
 538     test "${1#!}" = "$1" && op== || op=!=
 539     eval test "x\$${1#!}" $op "xyes"
 540 }
 541
 542 disabled(){
 543     test "${1#!}" = "$1" && op== || op=!=
 544     eval test "x\$${1#!}" $op "xno"
 545 }
 546
 547 enabled_all(){
 548     for opt; do
 549         enabled $opt || return 1
 550     done
 551 }
 552
 553 disabled_all(){
 554     for opt; do
 555         disabled $opt || return 1
 556     done
 557 }
 558
 559 enabled_any(){
 560     for opt; do
 561         enabled $opt && return 0
 562     done
 563 }
 564
 565 disabled_any(){
 566     for opt; do
 567         disabled $opt && return 0
 568     done
 569     return 1
 570 }
 571
 572 set_default(){
 573     for opt; do
 574         eval : \${$opt:=\$${opt}_default}
 575     done
 576 }
 577
 578 is_in(){
 579     value=$1
 580     shift
 581     for var in $*; do
 582         [ $var = $value ] && return 0
 583     done
 584     return 1
 585 }
 586
 587 do_check_deps(){
 588     for cfg; do
 589         cfg="${cfg#!}"
 590         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 591         disabled ${cfg}_checking && continue
 592         enable ${cfg}_checking
 593         append allopts $cfg
 594
 595         eval dep_all="\$${cfg}_deps"
 596         eval dep_any="\$${cfg}_deps_any"
 597         eval dep_sel="\$${cfg}_select"
 598         eval dep_sgs="\$${cfg}_suggest"
 599         eval dep_ifa="\$${cfg}_if"
 600         eval dep_ifn="\$${cfg}_if_any"
 601
 602         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 603         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 604         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 605
 606         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 607         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 608         enabled_all  $dep_all || disable $cfg
 609         enabled_any  $dep_any || disable $cfg
 610         disabled_any $dep_sel && disable $cfg
 611
 612         if enabled $cfg; then
 613             enable_deep $dep_sel
 614             enable_deep_weak $dep_sgs
 615         fi
 616
 617         disable ${cfg}_checking
 618     done
 619 }
 620
 621 check_deps(){
 622     unset allopts
 623
 624     do_check_deps "$@"
 625
 626     for cfg in $allopts; do
 627         enabled $cfg || continue
 628         eval dep_extralibs="\$${cfg}_extralibs"
 629         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 630     done
 631 }
 632
 633 print_config(){
 634     pfx=$1
 635     files=$2
 636     shift 2
 637     map 'eval echo "$v \${$v:-no}"' "$@" |
 638     awk "BEGIN { split(\"$files\", files) }
 639         {
 640             c = \"$pfx\" toupper(\$1);
 641             v = \$2;
 642             sub(/yes/, 1, v);
 643             sub(/no/,  0, v);
 644             for (f in files) {
 645                 file = files[f];
 646                 if (file ~ /\\.h\$/) {
 647                     printf(\"#define %s %d\\n\", c, v) >>file;
 648                 } else if (file ~ /\\.asm\$/) {
 649                     printf(\"%%define %s %d\\n\", c, v) >>file;
 650                 } else if (file ~ /\\.mak\$/) {
 651                     n = -v ? \"\" : \"!\";
 652                     printf(\"%s%s=yes\\n\", n, c) >>file;
 653                 }
 654             }
 655         }"
 656 }
 657
 658 print_enabled(){
 659     suf=$1
 660     shift
 661     for v; do
 662         enabled $v && printf "%s\n" ${v%$suf};
 663     done
 664 }
 665
 666 append(){
 667     var=$1
 668     shift
 669     eval "$var=\"\$$var $*\""
 670 }
 671
 672 prepend(){
 673     var=$1
 674     shift
 675     eval "$var=\"$* \$$var\""
 676 }
 677
 678 add_cppflags(){
 679     append CPPFLAGS "$@"
 680 }
 681
 682 add_cflags(){
 683     append CFLAGS $($cflags_filter "$@")
 684 }
 685
 686 add_cxxflags(){
 687     append CXXFLAGS $($cflags_filter "$@")
 688 }
 689
 690 add_asflags(){
 691     append ASFLAGS $($asflags_filter "$@")
 692 }
 693
 694 add_ldflags(){
 695     append LDFLAGS $($ldflags_filter "$@")
 696 }
 697
 698 add_extralibs(){
 699     prepend extralibs $($ldflags_filter "$@")
 700 }
 701
 702 add_host_cflags(){
 703     append host_cflags $($host_cflags_filter "$@")
 704 }
 705
 706 add_host_ldflags(){
 707     append host_ldflags $($host_ldflags_filter "$@")
 708 }
 709
 710 add_compat(){
 711     append compat_objs $1
 712     shift
 713     map 'add_cppflags -D$v' "$@"
 714 }
 715
 716 check_cmd(){
 717     log "$@"
 718     "$@" >> $logfile 2>&1
 719 }
 720
 721 cc_o(){
 722     eval printf '%s\\n' $CC_O
 723 }
 724
 725 cc_e(){
 726     eval printf '%s\\n' $CC_E
 727 }
 728
 729 check_cc(){
 730     log check_cc "$@"
 731     cat > $TMPC
 732     log_file $TMPC
 733     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 734 }
 735
 736 check_cxx(){
 737     log check_cxx "$@"
 738     cat > $TMPCPP
 739     log_file $TMPCPP
 740     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 741 }
 742
 743 check_cpp(){
 744     log check_cpp "$@"
 745     cat > $TMPC
 746     log_file $TMPC
 747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 748 }
 749
 750 as_o(){
 751     eval printf '%s\\n' $AS_O
 752 }
 753
 754 check_as(){
 755     log check_as "$@"
 756     cat > $TMPS
 757     log_file $TMPS
 758     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 759 }
 760
 761 check_inline_asm(){
 762     log check_inline_asm "$@"
 763     name="$1"
 764     code="$2"
 765     shift 2
 766     disable $name
 767     check_cc "$@" <<EOF && enable $name
 768 void foo(void){ __asm__ volatile($code); }
 769 EOF
 770 }
 771
 772 check_insn(){
 773     log check_insn "$@"
 774     check_inline_asm ${1}_inline "\"$2\""
 775     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 776 }
 777
 778 check_yasm(){
 779     log check_yasm "$@"
 780     echo "$1" > $TMPS
 781     log_file $TMPS
 782     shift 1
 783     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 784 }
 785
 786 ld_o(){
 787     eval printf '%s\\n' $LD_O
 788 }
 789
 790 check_ld(){
 791     log check_ld "$@"
 792     type=$1
 793     shift 1
 794     flags=$(filter_out '-l*|*.so' $@)
 795     libs=$(filter '-l*|*.so' $@)
 796     check_$type $($cflags_filter $flags) || return
 797     flags=$($ldflags_filter $flags)
 798     libs=$($ldflags_filter $libs)
 799     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 800 }
 801
 802 check_code(){
 803     log check_code "$@"
 804     check=$1
 805     headers=$2
 806     code=$3
 807     shift 3
 808     {
 809         for hdr in $headers; do
 810             echo "#include <$hdr>"
 811         done
 812         echo "int main(void) { $code; return 0; }"
 813     } | check_$check "$@"
 814 }
 815
 816 check_cppflags(){
 817     log check_cppflags "$@"
 818     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 819 int x;
 820 EOF
 821 }
 822
 823 check_cflags(){
 824     log check_cflags "$@"
 825     set -- $($cflags_filter "$@")
 826     check_cc "$@" <<EOF && append CFLAGS "$@"
 827 int x;
 828 EOF
 829 }
 830
 831 check_cxxflags(){
 832     log check_cxxflags "$@"
 833     set -- $($cflags_filter "$@")
 834     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 835 int x;
 836 EOF
 837 }
 838
 839 test_ldflags(){
 840     log test_ldflags "$@"
 841     check_ld "cc" "$@" <<EOF
 842 int main(void){ return 0; }
 843 EOF
 844 }
 845
 846 check_ldflags(){
 847     log check_ldflags "$@"
 848     test_ldflags "$@" && add_ldflags "$@"
 849 }
 850
 851 check_header(){
 852     log check_header "$@"
 853     header=$1
 854     shift
 855     disable_safe $header
 856     check_cpp "$@" <<EOF && enable_safe $header
 857 #include <$header>
 858 int x;
 859 EOF
 860 }
 861
 862 check_func(){
 863     log check_func "$@"
 864     func=$1
 865     shift
 866     disable $func
 867     check_ld "cc" "$@" <<EOF && enable $func
 868 extern int $func();
 869 int main(void){ $func(); }
 870 EOF
 871 }
 872
 873 check_mathfunc(){
 874     log check_mathfunc "$@"
 875     func=$1
 876     narg=$2
 877     shift 2
 878     test $narg = 2 && args="f, g" || args="f"
 879     disable $func
 880     check_ld "cc" "$@" <<EOF && enable $func
 881 #include <math.h>
 882 float foo(float f, float g) { return $func($args); }
 883 int main(void){ return (int) foo; }
 884 EOF
 885 }
 886
 887 check_func_headers(){
 888     log check_func_headers "$@"
 889     headers=$1
 890     funcs=$2
 891     shift 2
 892     {
 893         for hdr in $headers; do
 894             echo "#include <$hdr>"
 895         done
 896         for func in $funcs; do
 897             echo "long check_$func(void) { return (long) $func; }"
 898         done
 899         echo "int main(void) { return 0; }"
 900     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 901 }
 902
 903 check_class_headers_cpp(){
 904     log check_class_headers_cpp "$@"
 905     headers=$1
 906     classes=$2
 907     shift 2
 908     {
 909         for hdr in $headers; do
 910             echo "#include <$hdr>"
 911         done
 912         echo "int main(void) { "
 913         i=1
 914         for class in $classes; do
 915             echo "$class obj$i;"
 916             i=$(expr $i + 1)
 917         done
 918         echo "return 0; }"
 919     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 920 }
 921
 922 check_cpp_condition(){
 923     log check_cpp_condition "$@"
 924     header=$1
 925     condition=$2
 926     shift 2
 927     check_cpp "$@" <<EOF
 928 #include <$header>
 929 #if !($condition)
 930 #error "unsatisfied condition: $condition"
 931 #endif
 932 EOF
 933 }
 934
 935 check_lib(){
 936     log check_lib "$@"
 937     header="$1"
 938     func="$2"
 939     shift 2
 940     check_header $header && check_func $func "$@" && add_extralibs "$@"
 941 }
 942
 943 check_lib2(){
 944     log check_lib2 "$@"
 945     headers="$1"
 946     funcs="$2"
 947     shift 2
 948     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 949 }
 950
 951 check_lib_cpp(){
 952     log check_lib_cpp "$@"
 953     headers="$1"
 954     classes="$2"
 955     shift 2
 956     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 957 }
 958
 959 check_pkg_config(){
 960     log check_pkg_config "$@"
 961     pkg="$1"
 962     headers="$2"
 963     funcs="$3"
 964     shift 3
 965     $pkg_config --exists $pkg 2>/dev/null || return
 966     pkg_cflags=$($pkg_config --cflags $pkg)
 967     pkg_libs=$($pkg_config --libs $pkg)
 968     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 969         set_safe ${pkg}_cflags $pkg_cflags   &&
 970         set_safe ${pkg}_libs   $pkg_libs
 971 }
 972
 973 check_exec(){
 974     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 975 }
 976
 977 check_exec_crash(){
 978     code=$(cat)
 979
 980     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 981     # are safe but may not be available everywhere.  Thus we use
 982     # raise(SIGTERM) instead.  The check is run in a subshell so we
 983     # can redirect the "Terminated" message from the shell.  SIGBUS
 984     # is not defined by standard C so it is used conditionally.
 985
 986     (check_exec "$@") >> $logfile 2>&1 <<EOF
 987 #include <signal.h>
 988 static void sighandler(int sig){
 989     raise(SIGTERM);
 990 }
 991 int func(void){
 992     $code
 993 }
 994 int (*func_ptr)(void) = func;
 995 int main(void){
 996     signal(SIGILL, sighandler);
 997     signal(SIGFPE, sighandler);
 998     signal(SIGSEGV, sighandler);
 999 #ifdef SIGBUS
1000     signal(SIGBUS, sighandler);
1001 #endif
1002     return func_ptr();
1003 }
1004 EOF
1005 }
1006
1007 check_type(){
1008     log check_type "$@"
1009     headers=$1
1010     type=$2
1011     shift 2
1012     disable_safe "$type"
1013     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1014 }
1015
1016 check_struct(){
1017     log check_type "$@"
1018     headers=$1
1019     struct=$2
1020     member=$3
1021     shift 3
1022     disable_safe "${struct}_${member}"
1023     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1024         enable_safe "${struct}_${member}"
1025 }
1026
1027 require(){
1028     name="$1"
1029     header="$2"
1030     func="$3"
1031     shift 3
1032     check_lib $header $func "$@" || die "ERROR: $name not found"
1033 }
1034
1035 require2(){
1036     name="$1"
1037     headers="$2"
1038     func="$3"
1039     shift 3
1040     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1041 }
1042
1043 require_cpp(){
1044     name="$1"
1045     headers="$2"
1046     classes="$3"
1047     shift 3
1048     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require_pkg_config(){
1052     pkg="$1"
1053     check_pkg_config "$@" || die "ERROR: $pkg not found"
1054     add_cflags    $(get_safe ${pkg}_cflags)
1055     add_extralibs $(get_safe ${pkg}_libs)
1056 }
1057
1058 hostcc_o(){
1059     eval printf '%s\\n' $HOSTCC_O
1060 }
1061
1062 check_host_cc(){
1063     log check_host_cc "$@"
1064     cat > $TMPC
1065     log_file $TMPC
1066     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1067 }
1068
1069 check_host_cflags(){
1070     log check_host_cflags "$@"
1071     set -- $($host_cflags_filter "$@")
1072     check_host_cc "$@" <<EOF && append host_cflags "$@"
1073 int x;
1074 EOF
1075 }
1076
1077 apply(){
1078     file=$1
1079     shift
1080     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1081 }
1082
1083 cp_if_changed(){
1084     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1085     mkdir -p "$(dirname $2)"
1086     $cp_f "$1" "$2"
1087 }
1088
1089 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1090 # system-dependent things.
1091
1092 COMPONENT_LIST="
1093     bsfs
1094     decoders
1095     demuxers
1096     encoders
1097     filters
1098     hwaccels
1099     indevs
1100     muxers
1101     outdevs
1102     parsers
1103     protocols
1104 "
1105
1106 DOCUMENT_LIST="
1107     doc
1108     htmlpages
1109     manpages
1110     podpages
1111     txtpages
1112 "
1113
1114 HWACCEL_LIST="
1115     dxva2
1116     vaapi
1117     vda
1118     vdpau
1119 "
1120
1121 LIBRARY_LIST="
1122     avcodec
1123     avdevice
1124     avfilter
1125     avformat
1126     avresample
1127     avutil
1128     postproc
1129     swresample
1130     swscale
1131 "
1132
1133 PROGRAM_LIST="
1134     ffplay
1135     ffprobe
1136     ffserver
1137     ffmpeg
1138 "
1139
1140 CONFIG_LIST="
1141     $COMPONENT_LIST
1142     $DOCUMENT_LIST
1143     $HWACCEL_LIST
1144     $LIBRARY_LIST
1145     $PROGRAM_LIST
1146     avisynth
1147     bzlib
1148     crystalhd
1149     dct
1150     dwt
1151     fast_unaligned
1152     fft
1153     fontconfig
1154     frei0r
1155     ftrapv
1156     gnutls
1157     gpl
1158     gray
1159     hardcoded_tables
1160     incompatible_fork_abi
1161     libaacplus
1162     libass
1163     libbluray
1164     libcaca
1165     libcdio
1166     libcelt
1167     libdc1394
1168     libfaac
1169     libfdk_aac
1170     libflite
1171     libfreetype
1172     libgsm
1173     libiec61883
1174     libilbc
1175     libmodplug
1176     libmp3lame
1177     libnut
1178     libopencore_amrnb
1179     libopencore_amrwb
1180     libopencv
1181     libopenjpeg
1182     libopus
1183     libpulse
1184     librtmp
1185     libschroedinger
1186     libsoxr
1187     libspeex
1188     libstagefright_h264
1189     libtheora
1190     libtwolame
1191     libutvideo
1192     libv4l2
1193     libvo_aacenc
1194     libvo_amrwbenc
1195     libvorbis
1196     libvpx
1197     libx264
1198     libxavs
1199     libxvid
1200     lsp
1201     lzo
1202     mdct
1203     memalign_hack
1204     memory_poisoning
1205     network
1206     nonfree
1207     openal
1208     openssl
1209     pic
1210     rdft
1211     runtime_cpudetect
1212     safe_bitstream_reader
1213     shared
1214     small
1215     sram
1216     static
1217     swscale_alpha
1218     thumb
1219     version3
1220     xmm_clobber_test
1221     x11grab
1222     zlib
1223 "
1224
1225 THREADS_LIST='
1226     pthreads
1227     w32threads
1228     os2threads
1229 '
1230
1231 ARCH_LIST='
1232     aarch64
1233     alpha
1234     arm
1235     avr32
1236     avr32_ap
1237     avr32_uc
1238     bfin
1239     ia64
1240     m68k
1241     mips
1242     mips64
1243     parisc
1244     ppc
1245     ppc64
1246     s390
1247     sh4
1248     sparc
1249     sparc64
1250     tilegx
1251     tilepro
1252     tomi
1253     x86
1254     x86_32
1255     x86_64
1256 '
1257
1258 ARCH_EXT_LIST_ARM='
1259     armv5te
1260     armv6
1261     armv6t2
1262     neon
1263     vfp
1264     vfpv3
1265 '
1266
1267 ARCH_EXT_LIST_X86='
1268     amd3dnow
1269     amd3dnowext
1270     avx
1271     fma4
1272     mmx
1273     mmxext
1274     sse
1275     sse2
1276     sse3
1277     sse4
1278     sse42
1279     ssse3
1280 '
1281
1282 ARCH_EXT_LIST="
1283     $ARCH_EXT_LIST_ARM
1284     $ARCH_EXT_LIST_X86
1285     altivec
1286     ppc4xx
1287     vis
1288     mipsfpu
1289     mips32r2
1290     mipsdspr1
1291     mipsdspr2
1292 "
1293
1294 HAVE_LIST_CMDLINE='
1295     inline_asm
1296     symver
1297     yasm
1298 '
1299
1300 HAVE_LIST_PUB='
1301     bigendian
1302     fast_unaligned
1303     incompatible_fork_abi
1304 '
1305
1306 MATH_FUNCS="
1307     atanf
1308     atan2f
1309     cbrt
1310     cbrtf
1311     cosf
1312     exp2
1313     exp2f
1314     expf
1315     isinf
1316     isnan
1317     ldexpf
1318     llrint
1319     llrintf
1320     log2
1321     log2f
1322     log10f
1323     lrint
1324     lrintf
1325     powf
1326     rint
1327     round
1328     roundf
1329     sinf
1330     trunc
1331     truncf
1332 "
1333
1334 HAVE_LIST="
1335     $ARCH_EXT_LIST
1336     $(add_suffix _external $ARCH_EXT_LIST)
1337     $(add_suffix _inline   $ARCH_EXT_LIST)
1338     $HAVE_LIST_CMDLINE
1339     $HAVE_LIST_PUB
1340     $THREADS_LIST
1341     $MATH_FUNCS
1342     access
1343     aligned_malloc
1344     aligned_stack
1345     alsa_asoundlib_h
1346     altivec_h
1347     arpa_inet_h
1348     asm_mod_q
1349     asm_mod_y
1350     asm_types_h
1351     attribute_may_alias
1352     attribute_packed
1353     cdio_paranoia_h
1354     cdio_paranoia_paranoia_h
1355     clock_gettime
1356     closesocket
1357     cmov
1358     CommandLineToArgvW
1359     cpunop
1360     CryptGenRandom
1361     dcbzl
1362     dev_bktr_ioctl_bt848_h
1363     dev_bktr_ioctl_meteor_h
1364     dev_ic_bt8xx_h
1365     dev_video_bktr_ioctl_bt848_h
1366     dev_video_meteor_ioctl_meteor_h
1367     direct_h
1368     dlfcn_h
1369     dlopen
1370     dos_paths
1371     dxva_h
1372     ebp_available
1373     ebx_available
1374     fast_64bit
1375     fast_clz
1376     fast_cmov
1377     fcntl
1378     fork
1379     getaddrinfo
1380     gethrtime
1381     getopt
1382     GetProcessAffinityMask
1383     GetProcessMemoryInfo
1384     GetProcessTimes
1385     GetSystemTimeAsFileTime
1386     getrusage
1387     getservbyport
1388     gettimeofday
1389     glob
1390     gnu_as
1391     gsm_h
1392     ibm_asm
1393     iconv
1394     inet_aton
1395     io_h
1396     isatty
1397     jack_port_get_latency_range
1398     kbhit
1399     ldbrx
1400     libdc1394_1
1401     libdc1394_2
1402     local_aligned_16
1403     local_aligned_8
1404     localtime_r
1405     loongson
1406     lzo1x_999_compress
1407     machine_ioctl_bt848_h
1408     machine_ioctl_meteor_h
1409     makeinfo
1410     malloc_h
1411     MapViewOfFile
1412     memalign
1413     mkstemp
1414     mm_empty
1415     mmap
1416     mprotect
1417     msvcrt
1418     nanosleep
1419     openjpeg_1_5_openjpeg_h
1420     PeekNamedPipe
1421     perl
1422     pod2man
1423     poll_h
1424     posix_memalign
1425     pthread_cancel
1426     rdtsc
1427     rsync_contimeout
1428     sched_getaffinity
1429     sdl
1430     sdl_video_size
1431     SetConsoleTextAttribute
1432     setmode
1433     setrlimit
1434     Sleep
1435     sndio_h
1436     socklen_t
1437     soundcard_h
1438     strerror_r
1439     struct_addrinfo
1440     struct_group_source_req
1441     struct_ip_mreq_source
1442     struct_ipv6_mreq
1443     struct_pollfd
1444     struct_rusage_ru_maxrss
1445     struct_sctp_event_subscribe
1446     struct_sockaddr_in6
1447     struct_sockaddr_sa_len
1448     struct_sockaddr_storage
1449     struct_v4l2_frmivalenum_discrete
1450     symver_asm_label
1451     symver_gnu_asm
1452     sysconf
1453     sysctl
1454     sys_mman_h
1455     sys_param_h
1456     sys_resource_h
1457     sys_select_h
1458     sys_soundcard_h
1459     sys_time_h
1460     sys_videoio_h
1461     termios_h
1462     texi2html
1463     threads
1464     unistd_h
1465     usleep
1466     vfp_args
1467     VirtualAlloc
1468     windows_h
1469     winsock2_h
1470     xform_asm
1471     xmm_clobbers
1472 "
1473
1474 # options emitted with CONFIG_ prefix but not available on the command line
1475 CONFIG_EXTRA="
1476     aandcttables
1477     ac3dsp
1478     audio_frame_queue
1479     error_resilience
1480     gcrypt
1481     golomb
1482     gplv3
1483     h264chroma
1484     h264dsp
1485     h264pred
1486     h264qpel
1487     huffman
1488     lgplv3
1489     lpc
1490     mpegaudio
1491     mpegaudiodsp
1492     mpegvideo
1493     mpegvideoenc
1494     nettle
1495     rangecoder
1496     rtpdec
1497     rtpenc_chain
1498     sinewin
1499     videodsp
1500     vp3dsp
1501 "
1502
1503 CMDLINE_SELECT="
1504     $ARCH_EXT_LIST
1505     $CONFIG_LIST
1506     $HAVE_LIST_CMDLINE
1507     $THREADS_LIST
1508     asm
1509     coverage
1510     cross_compile
1511     debug
1512     extra_warnings
1513     logging
1514     lto
1515     optimizations
1516     stripping
1517 "
1518
1519 PATHS_LIST='
1520     bindir
1521     datadir
1522     incdir
1523     libdir
1524     mandir
1525     prefix
1526     shlibdir
1527 '
1528
1529 CMDLINE_SET="
1530     $PATHS_LIST
1531     ar
1532     arch
1533     as
1534     assert_level
1535     build_suffix
1536     cc
1537     cpu
1538     cross_prefix
1539     cxx
1540     dep_cc
1541     extra_version
1542     host_cc
1543     host_cflags
1544     host_ld
1545     host_ldflags
1546     host_libs
1547     host_os
1548     install
1549     ld
1550     logfile
1551     malloc_prefix
1552     nm
1553     optflags
1554     pkg_config
1555     progs_suffix
1556     random_seed
1557     samples
1558     strip
1559     sysinclude
1560     sysroot
1561     target_exec
1562     target_os
1563     target_path
1564     toolchain
1565     valgrind
1566     yasmexe
1567 "
1568
1569 CMDLINE_APPEND="
1570     extra_cflags
1571     extra_cxxflags
1572 "
1573
1574 # code dependency declarations
1575
1576 # architecture extensions
1577
1578 armv5te_deps="arm"
1579 armv6_deps="arm"
1580 armv6t2_deps="arm"
1581 neon_deps="arm"
1582 vfp_deps="arm"
1583 vfpv3_deps="vfp"
1584
1585 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1586
1587 mipsfpu_deps="mips"
1588 mips32r2_deps="mips"
1589 mipsdspr1_deps="mips"
1590 mipsdspr2_deps="mips"
1591
1592 altivec_deps="ppc"
1593 ppc4xx_deps="ppc"
1594
1595 vis_deps="sparc"
1596
1597 x86_64_suggest="cmov fast_cmov"
1598
1599 amd3dnow_deps="mmx"
1600 amd3dnowext_deps="amd3dnow"
1601 mmx_deps="x86"
1602 mmxext_deps="mmx"
1603 sse_deps="mmxext"
1604 sse2_deps="sse"
1605 sse3_deps="sse2"
1606 ssse3_deps="sse3"
1607 sse4_deps="ssse3"
1608 sse42_deps="sse4"
1609 avx_deps="sse42"
1610 fma4_deps="avx"
1611
1612 mmx_external_deps="yasm"
1613 mmx_inline_deps="inline_asm"
1614 mmx_suggest="mmx_external mmx_inline"
1615
1616 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1617     eval dep=\$${ext}_deps
1618     eval ${ext}_external_deps='"${dep}_external"'
1619     eval ${ext}_inline_deps='"${dep}_inline"'
1620     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1621 done
1622
1623 aligned_stack_if_any="ppc x86"
1624 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1625 fast_clz_if_any="alpha avr32 mips ppc x86"
1626 fast_unaligned_if_any="ppc x86"
1627
1628 inline_asm_deps="!tms470"
1629 need_memalign="altivec neon sse"
1630
1631 symver_if_any="symver_asm_label symver_gnu_asm"
1632
1633 log2_deps="!msvcrt"
1634
1635 # subsystems
1636 dct_select="rdft"
1637 mdct_select="fft"
1638 rdft_select="fft"
1639 mpegaudio_select="mpegaudiodsp"
1640 mpegaudiodsp_select="dct"
1641 mpegvideo_select="videodsp"
1642 mpegvideoenc_select="mpegvideo"
1643
1644 # decoders / encoders
1645 aac_decoder_select="mdct sinewin"
1646 aac_encoder_select="audio_frame_queue mdct sinewin"
1647 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1648 ac3_decoder_select="mdct ac3dsp ac3_parser"
1649 ac3_encoder_select="mdct ac3dsp"
1650 ac3_fixed_encoder_select="mdct ac3dsp"
1651 alac_encoder_select="lpc"
1652 amrnb_decoder_select="lsp"
1653 amrwb_decoder_select="lsp"
1654 amv_encoder_select="aandcttables"
1655 atrac1_decoder_select="mdct sinewin"
1656 atrac3_decoder_select="mdct"
1657 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1658 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1659 cavs_decoder_select="golomb mpegvideo"
1660 comfortnoise_encoder_select="lpc"
1661 cook_decoder_select="mdct sinewin"
1662 cscd_decoder_select="lzo"
1663 cscd_decoder_suggest="zlib"
1664 dca_decoder_select="mdct"
1665 dirac_decoder_select="dwt golomb videodsp"
1666 dnxhd_encoder_select="aandcttables mpegvideoenc"
1667 dxa_decoder_select="zlib"
1668 eac3_decoder_select="ac3_decoder"
1669 eac3_encoder_select="ac3_encoder"
1670 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1671 eatgq_decoder_select="aandcttables"
1672 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1673 exr_decoder_select="zlib"
1674 ffv1_decoder_select="golomb rangecoder"
1675 ffv1_encoder_select="rangecoder"
1676 ffvhuff_encoder_select="huffman"
1677 flac_decoder_select="golomb"
1678 flac_encoder_select="golomb lpc"
1679 flashsv_decoder_select="zlib"
1680 flashsv_encoder_select="zlib"
1681 flashsv2_encoder_select="zlib"
1682 flashsv2_decoder_select="zlib"
1683 flv_decoder_select="h263_decoder"
1684 flv_encoder_select="h263_encoder"
1685 fraps_decoder_select="huffman"
1686 h261_decoder_select="error_resilience mpegvideo"
1687 h261_encoder_select="aandcttables mpegvideoenc"
1688 h263_decoder_select="error_resilience h263_parser mpegvideo"
1689 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1690 h263i_decoder_select="h263_decoder"
1691 h263p_encoder_select="h263_encoder"
1692 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1693 huffyuv_encoder_select="huffman"
1694 iac_decoder_select="fft mdct sinewin"
1695 imc_decoder_select="fft mdct sinewin"
1696 jpegls_decoder_select="golomb"
1697 jpegls_encoder_select="golomb"
1698 ljpeg_encoder_select="aandcttables mpegvideoenc"
1699 loco_decoder_select="golomb"
1700 mdec_decoder_select="error_resilience mpegvideo"
1701 mjpeg_encoder_select="aandcttables mpegvideoenc"
1702 mlp_decoder_select="mlp_parser"
1703 mp1_decoder_select="mpegaudio"
1704 mp1float_decoder_select="mpegaudio"
1705 mp2_decoder_select="mpegaudio"
1706 mp2float_decoder_select="mpegaudio"
1707 mp3_decoder_select="mpegaudio"
1708 mp3adu_decoder_select="mpegaudio"
1709 mp3adufloat_decoder_select="mpegaudio"
1710 mp3float_decoder_select="mpegaudio"
1711 mp3on4_decoder_select="mpegaudio"
1712 mp3on4float_decoder_select="mpegaudio"
1713 mpc7_decoder_select="mpegaudiodsp"
1714 mpc8_decoder_select="mpegaudiodsp"
1715 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1716 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1717 mpeg1video_decoder_select="error_resilience mpegvideo"
1718 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1719 mpeg2video_decoder_select="error_resilience mpegvideo"
1720 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1721 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1722 mpeg4_encoder_select="h263_encoder"
1723 msmpeg4v1_decoder_select="h263_decoder"
1724 msmpeg4v1_encoder_select="h263_encoder"
1725 msmpeg4v2_decoder_select="h263_decoder"
1726 msmpeg4v2_encoder_select="h263_encoder"
1727 msmpeg4v3_decoder_select="h263_decoder"
1728 msmpeg4v3_encoder_select="h263_encoder"
1729 mss2_decoder_select="vc1_decoder"
1730 nellymoser_decoder_select="mdct sinewin"
1731 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1732 nuv_decoder_select="lzo"
1733 png_decoder_select="zlib"
1734 png_encoder_select="zlib"
1735 qcelp_decoder_select="lsp"
1736 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1737 ra_144_encoder_select="audio_frame_queue lpc"
1738 ralf_decoder_select="golomb"
1739 rv10_decoder_select="h263_decoder"
1740 rv10_encoder_select="h263_encoder"
1741 rv20_decoder_select="h263_decoder"
1742 rv20_encoder_select="h263_encoder"
1743 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1744 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1745 shorten_decoder_select="golomb"
1746 sipr_decoder_select="lsp"
1747 snow_decoder_select="dwt rangecoder"
1748 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1749 sonic_decoder_select="golomb"
1750 sonic_encoder_select="golomb"
1751 sonic_ls_encoder_select="golomb"
1752 svq1_decoder_select="error_resilience mpegvideo"
1753 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1754 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1755 svq3_decoder_suggest="zlib"
1756 theora_decoder_select="vp3_decoder"
1757 tiff_decoder_suggest="zlib"
1758 tiff_encoder_suggest="zlib"
1759 truehd_decoder_select="mlp_parser"
1760 tscc_decoder_select="zlib"
1761 twinvq_decoder_select="mdct lsp sinewin"
1762 utvideo_encoder_select="huffman"
1763 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1764 vc1image_decoder_select="vc1_decoder"
1765 vorbis_decoder_select="mdct"
1766 vorbis_encoder_select="mdct"
1767 vp3_decoder_select="vp3dsp videodsp"
1768 vp5_decoder_select="vp3dsp videodsp"
1769 vp6_decoder_select="huffman vp3dsp videodsp"
1770 vp6a_decoder_select="vp6_decoder"
1771 vp6f_decoder_select="vp6_decoder"
1772 vp8_decoder_select="h264pred videodsp"
1773 wmapro_decoder_select="mdct sinewin"
1774 wmav1_decoder_select="mdct sinewin"
1775 wmav1_encoder_select="mdct sinewin"
1776 wmav2_decoder_select="mdct sinewin"
1777 wmav2_encoder_select="mdct sinewin"
1778 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1779 wmv1_decoder_select="h263_decoder"
1780 wmv1_encoder_select="h263_encoder"
1781 wmv2_decoder_select="h263_decoder"
1782 wmv2_encoder_select="h263_encoder"
1783 wmv3_decoder_select="vc1_decoder"
1784 wmv3image_decoder_select="wmv3_decoder"
1785 zerocodec_decoder_select="zlib"
1786 zlib_decoder_select="zlib"
1787 zlib_encoder_select="zlib"
1788 zmbv_decoder_select="zlib"
1789 zmbv_encoder_select="zlib"
1790
1791 # hardware accelerators
1792 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1793 vaapi_deps="va_va_h"
1794 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1795 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1796 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1797
1798 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1799 h263_vdpau_hwaccel_select="vdpau h263_decoder"
1800 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1801 h264_dxva2_hwaccel_deps="dxva2api_h"
1802 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1803 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1804 h264_vda_decoder_select="vda h264_parser h264_decoder"
1805 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1806 h264_vda_hwaccel_select="vda h264_decoder"
1807 h264_vdpau_decoder_select="vdpau h264_decoder"
1808 h264_vdpau_hwaccel_select="vdpau h264_decoder"
1809 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1810 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1811 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1812 mpeg2_crystalhd_decoder_select="crystalhd"
1813 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1814 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1815 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1816 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1817 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1818 mpeg4_crystalhd_decoder_select="crystalhd"
1819 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1820 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1821 mpeg4_vdpau_hwaccel_select="vdpau mpeg4_decoder"
1822 msmpeg4_crystalhd_decoder_select="crystalhd"
1823 vc1_crystalhd_decoder_select="crystalhd"
1824 vc1_dxva2_hwaccel_deps="dxva2api_h"
1825 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1826 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1827 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1828 vc1_vdpau_hwaccel_select="vdpau vc1_decoder"
1829 wmv3_crystalhd_decoder_select="crystalhd"
1830 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1831 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1832 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1833 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1834
1835 # parsers
1836 h264_parser_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1837 mpeg4video_parser_select="error_resilience mpegvideo"
1838 mpegvideo_parser_select="error_resilience mpegvideo"
1839 vc1_parser_select="error_resilience mpegvideo"
1840
1841 # external libraries
1842 libaacplus_encoder_deps="libaacplus"
1843 libcelt_decoder_deps="libcelt"
1844 libfaac_encoder_deps="libfaac"
1845 libfaac_encoder_select="audio_frame_queue"
1846 libfdk_aac_encoder_deps="libfdk_aac"
1847 libfdk_aac_encoder_select="audio_frame_queue"
1848 libgsm_decoder_deps="libgsm"
1849 libgsm_encoder_deps="libgsm"
1850 libgsm_ms_decoder_deps="libgsm"
1851 libgsm_ms_encoder_deps="libgsm"
1852 libilbc_decoder_deps="libilbc"
1853 libilbc_encoder_deps="libilbc"
1854 libmodplug_demuxer_deps="libmodplug"
1855 libmp3lame_encoder_deps="libmp3lame"
1856 libmp3lame_encoder_select="audio_frame_queue"
1857 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1858 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1859 libopencore_amrnb_encoder_select="audio_frame_queue"
1860 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1861 libopenjpeg_decoder_deps="libopenjpeg"
1862 libopenjpeg_encoder_deps="libopenjpeg"
1863 libopus_decoder_deps="libopus"
1864 libopus_encoder_deps="libopus"
1865 libopus_encoder_select="audio_frame_queue"
1866 libschroedinger_decoder_deps="libschroedinger"
1867 libschroedinger_encoder_deps="libschroedinger"
1868 libspeex_decoder_deps="libspeex"
1869 libspeex_encoder_deps="libspeex"
1870 libspeex_encoder_select="audio_frame_queue"
1871 libstagefright_h264_decoder_deps="libstagefright_h264"
1872 libtheora_encoder_deps="libtheora"
1873 libtwolame_encoder_deps="libtwolame"
1874 libvo_aacenc_encoder_deps="libvo_aacenc"
1875 libvo_aacenc_encoder_select="audio_frame_queue"
1876 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1877 libvorbis_decoder_deps="libvorbis"
1878 libvorbis_encoder_deps="libvorbis"
1879 libvorbis_encoder_select="audio_frame_queue"
1880 libvpx_vp8_decoder_deps="libvpx"
1881 libvpx_vp8_encoder_deps="libvpx"
1882 libvpx_vp9_decoder_deps="libvpx"
1883 libvpx_vp9_encoder_deps="libvpx"
1884 libx264_encoder_deps="libx264"
1885 libx264rgb_encoder_deps="libx264"
1886 libxavs_encoder_deps="libxavs"
1887 libxvid_encoder_deps="libxvid"
1888 libutvideo_decoder_deps="libutvideo"
1889 libutvideo_encoder_deps="libutvideo"
1890
1891 # demuxers / muxers
1892 ac3_demuxer_select="ac3_parser"
1893 asf_stream_muxer_select="asf_muxer"
1894 avisynth_demuxer_deps="avisynth"
1895 dirac_demuxer_select="dirac_parser"
1896 dts_demuxer_select="dca_parser"
1897 dtshd_demuxer_select="dca_parser"
1898 eac3_demuxer_select="ac3_parser"
1899 f4v_muxer_select="mov_muxer"
1900 flac_demuxer_select="flac_parser"
1901 ipod_muxer_select="mov_muxer"
1902 ismv_muxer_select="mov_muxer"
1903 libnut_demuxer_deps="libnut"
1904 libnut_muxer_deps="libnut"
1905 matroska_audio_muxer_select="matroska_muxer"
1906 matroska_demuxer_suggest="bzlib lzo zlib"
1907 mov_demuxer_suggest="zlib"
1908 mov_muxer_select="rtpenc_chain"
1909 mp3_demuxer_select="mpegaudio_parser"
1910 mp4_muxer_select="mov_muxer"
1911 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1912 mpegtsraw_demuxer_select="mpegts_demuxer"
1913 mxf_d10_muxer_select="mxf_muxer"
1914 ogg_demuxer_select="golomb"
1915 psp_muxer_select="mov_muxer"
1916 rtp_demuxer_select="sdp_demuxer"
1917 rtp_muxer_select="mpegvideo"
1918 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1919 rtsp_demuxer_select="http_protocol rtpdec"
1920 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1921 sap_demuxer_select="sdp_demuxer"
1922 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1923 sdp_demuxer_select="rtpdec"
1924 smoothstreaming_muxer_select="ismv_muxer"
1925 spdif_muxer_select="aac_parser"
1926 tak_demuxer_select="tak_parser"
1927 tg2_muxer_select="mov_muxer"
1928 tgp_muxer_select="mov_muxer"
1929 vobsub_demuxer_select="mpegps_demuxer"
1930 w64_demuxer_deps="wav_demuxer"
1931 w64_muxer_deps="wav_muxer"
1932
1933 # indevs / outdevs
1934 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1935 alsa_outdev_deps="alsa_asoundlib_h"
1936 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1937 caca_outdev_deps="libcaca"
1938 dshow_indev_deps="IBaseFilter"
1939 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1940 dv1394_indev_deps="dv1394 dv_demuxer"
1941 fbdev_indev_deps="linux_fb_h"
1942 iec61883_indev_deps="libiec61883"
1943 jack_indev_deps="jack_jack_h sem_timedwait"
1944 lavfi_indev_deps="avfilter"
1945 libcdio_indev_deps="libcdio"
1946 libdc1394_indev_deps="libdc1394"
1947 libv4l2_indev_deps="libv4l2"
1948 openal_indev_deps="openal"
1949 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1950 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1951 pulse_indev_deps="libpulse"
1952 sdl_outdev_deps="sdl"
1953 sndio_indev_deps="sndio_h"
1954 sndio_outdev_deps="sndio_h"
1955 v4l_indev_deps="linux_videodev_h"
1956 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1957 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1958 vfwcap_indev_extralibs="-lavicap32"
1959 x11grab_indev_deps="x11grab"
1960
1961 # protocols
1962 bluray_protocol_deps="libbluray"
1963 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1964 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1965 ffrtmpcrypt_protocol_select="tcp_protocol"
1966 ffrtmphttp_protocol_deps="!librtmp_protocol"
1967 ffrtmphttp_protocol_select="http_protocol"
1968 gopher_protocol_select="network"
1969 httpproxy_protocol_select="tcp_protocol"
1970 http_protocol_select="tcp_protocol"
1971 https_protocol_select="tls_protocol"
1972 librtmp_protocol_deps="librtmp"
1973 librtmpe_protocol_deps="librtmp"
1974 librtmps_protocol_deps="librtmp"
1975 librtmpt_protocol_deps="librtmp"
1976 librtmpte_protocol_deps="librtmp"
1977 mmsh_protocol_select="http_protocol"
1978 mmst_protocol_select="network"
1979 rtmp_protocol_deps="!librtmp_protocol"
1980 rtmp_protocol_select="tcp_protocol"
1981 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1982 rtmps_protocol_deps="!librtmp_protocol"
1983 rtmps_protocol_select="tls_protocol"
1984 rtmpt_protocol_select="ffrtmphttp_protocol"
1985 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1986 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1987 rtp_protocol_select="udp_protocol"
1988 sctp_protocol_deps="struct_sctp_event_subscribe"
1989 sctp_protocol_select="network"
1990 srtp_protocol_select="rtp_protocol"
1991 tcp_protocol_select="network"
1992 tls_protocol_deps_any="openssl gnutls"
1993 tls_protocol_select="tcp_protocol"
1994 udp_protocol_select="network"
1995
1996 # filters
1997 aconvert_filter_deps="swresample"
1998 amovie_filter_deps="avcodec avformat"
1999 aresample_filter_deps="swresample"
2000 ass_filter_deps="libass"
2001 asyncts_filter_deps="avresample"
2002 atempo_filter_deps="avcodec rdft"
2003 blackframe_filter_deps="gpl"
2004 boxblur_filter_deps="gpl"
2005 colormatrix_filter_deps="gpl"
2006 cropdetect_filter_deps="gpl"
2007 decimate_filter_deps="gpl avcodec"
2008 delogo_filter_deps="gpl"
2009 deshake_filter_deps="avcodec"
2010 drawtext_filter_deps="libfreetype"
2011 ebur128_filter_deps="gpl"
2012 flite_filter_deps="libflite"
2013 frei0r_filter_deps="frei0r dlopen"
2014 frei0r_filter_extralibs='$ldl'
2015 frei0r_src_filter_deps="frei0r dlopen"
2016 frei0r_src_filter_extralibs='$ldl'
2017 geq_filter_deps="gpl"
2018 histeq_filter_deps="gpl"
2019 hqdn3d_filter_deps="gpl"
2020 hue_filter_deps="gpl"
2021 kerndeint_filter_deps="gpl"
2022 movie_filter_deps="avcodec avformat"
2023 mp_filter_deps="gpl avcodec swscale inline_asm"
2024 mptestsrc_filter_deps="gpl"
2025 negate_filter_deps="lut_filter"
2026 noise_filter_deps="gpl"
2027 resample_filter_deps="avresample"
2028 ocv_filter_deps="libopencv"
2029 pan_filter_deps="swresample"
2030 pp_filter_deps="gpl postproc"
2031 removelogo_filter_deps="avcodec avformat swscale"
2032 scale_filter_deps="swscale"
2033 smartblur_filter_deps="gpl swscale"
2034 showspectrum_filter_deps="avcodec rdft"
2035 subtitles_filter_deps="avformat avcodec libass"
2036 super2xsai_filter_deps="gpl"
2037 tinterlace_filter_deps="gpl"
2038 yadif_filter_deps="gpl"
2039 pixfmts_super2xsai_test_deps="super2xsai_filter"
2040 tinterlace_merge_test_deps="tinterlace_filter"
2041 tinterlace_pad_test_deps="tinterlace_filter"
2042
2043 # libraries
2044 avcodec_deps="avutil"
2045 avdevice_deps="avutil avcodec avformat"
2046 avfilter_deps="avutil"
2047 avformat_deps="avutil avcodec"
2048 avresample_deps="avutil"
2049 postproc_deps="avutil gpl"
2050 swscale_deps="avutil"
2051
2052 # programs
2053 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2054 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2055                setpts_filter null_filter anull_filter ffabuffersink_filter"
2056 ffplay_deps="avcodec avformat swscale swresample sdl"
2057 ffplay_select="ffbuffersink_filter rdft crop_filter"
2058 ffprobe_deps="avcodec avformat"
2059 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2060 ffserver_extralibs='$ldl'
2061
2062 # documentation
2063 podpages_deps="perl"
2064 manpages_deps="perl pod2man"
2065 htmlpages_deps="texi2html"
2066 txtpages_deps="makeinfo"
2067 doc_deps_any="manpages htmlpages podpages txtpages"
2068
2069 # default parameters
2070
2071 logfile="config.log"
2072
2073 # installation paths
2074 prefix_default="/usr/local"
2075 bindir_default='${prefix}/bin'
2076 datadir_default='${prefix}/share/ffmpeg'
2077 incdir_default='${prefix}/include'
2078 libdir_default='${prefix}/lib'
2079 mandir_default='${prefix}/share/man'
2080 shlibdir_default="$libdir_default"
2081
2082 # toolchain
2083 ar_default="ar"
2084 cc_default="gcc"
2085 cxx_default="g++"
2086 host_cc_default="gcc"
2087 cp_f="cp -f"
2088 install="install"
2089 ln_s="ln -sf"
2090 nm_default="nm -g"
2091 objformat="elf"
2092 pkg_config_default=pkg-config
2093 ranlib="ranlib"
2094 strip_default="strip"
2095 yasmexe_default="yasm"
2096
2097 nogas=":"
2098
2099 # machine
2100 arch_default=$(uname -m)
2101 cpu="generic"
2102
2103 # OS
2104 target_os_default=$(tolower $(uname -s))
2105 host_os=$target_os_default
2106
2107 # configurable options
2108 enable $PROGRAM_LIST
2109 enable $DOCUMENT_LIST
2110 enable $(filter_out avresample $LIBRARY_LIST)
2111 enable stripping
2112
2113 enable asm
2114 enable debug
2115 enable doc
2116 enable optimizations
2117 enable runtime_cpudetect
2118 enable safe_bitstream_reader
2119 enable static
2120 enable swscale_alpha
2121
2122 # build settings
2123 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2124 FFSERVERLDFLAGS=-Wl,-E
2125 LIBPREF="lib"
2126 LIBSUF=".a"
2127 FULLNAME='$(NAME)$(BUILDSUF)'
2128 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2129 SLIBPREF="lib"
2130 SLIBSUF=".so"
2131 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2132 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2133 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2134 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2135 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2136 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2137
2138 asflags_filter=echo
2139 cflags_filter=echo
2140 ldflags_filter=echo
2141
2142 AS_C='-c'
2143 AS_O='-o $@'
2144 CC_C='-c'
2145 CC_E='-E -o $@'
2146 CC_O='-o $@'
2147 CXX_C='-c'
2148 CXX_O='-o $@'
2149 LD_O='-o $@'
2150 LD_LIB='-l%'
2151 LD_PATH='-L'
2152 HOSTCC_C='-c'
2153 HOSTCC_O='-o $@'
2154 HOSTLD_O='-o $@'
2155
2156 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
2157 host_libs='-lm'
2158 host_cflags_filter=echo
2159 host_ldflags_filter=echo
2160
2161 target_path='$(CURDIR)'
2162
2163 # since the object filename is not given with the -MM flag, the compiler
2164 # is only able to print the basename, and we must add the path ourselves
2165 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2166 DEPFLAGS='-MM'
2167
2168 # find source path
2169 if test -f configure; then
2170     source_path=.
2171 else
2172     source_path=$(cd $(dirname "$0"); pwd)
2173     echo "$source_path" | grep -q '[[:blank:]]' &&
2174         die "Out of tree builds are impossible with whitespace in source path."
2175     test -e "$source_path/config.h" &&
2176         die "Out of tree builds are impossible with config.h in source dir."
2177 fi
2178
2179 for v in "$@"; do
2180     r=${v#*=}
2181     l=${v%"$r"}
2182     r=$(sh_quote "$r")
2183     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2184 done
2185
2186 find_things(){
2187     thing=$1
2188     pattern=$2
2189     file=$source_path/$3
2190     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2191 }
2192
2193 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2194 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2195 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2196 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2197 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2198 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2199 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2200 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2201 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2202 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2203 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2204
2205 ALL_COMPONENTS="
2206     $BSF_LIST
2207     $DECODER_LIST
2208     $DEMUXER_LIST
2209     $ENCODER_LIST
2210     $FILTER_LIST
2211     $HWACCEL_LIST
2212     $INDEV_LIST
2213     $MUXER_LIST
2214     $OUTDEV_LIST
2215     $PARSER_LIST
2216     $PROTOCOL_LIST
2217 "
2218
2219 for n in $COMPONENT_LIST; do
2220     v=$(toupper ${n%s})_LIST
2221     eval enable \$$v
2222     eval ${n}_if_any="\$$v"
2223 done
2224
2225 enable $ARCH_EXT_LIST
2226
2227 die_unknown(){
2228     echo "Unknown option \"$1\"."
2229     echo "See $0 --help for available options."
2230     exit 1
2231 }
2232
2233 print_3_columns() {
2234     cat | tr ' ' '\n' | sort | pr -r -3 -t
2235 }
2236
2237 show_list() {
2238     suffix=_$1
2239     shift
2240     echo $* | sed s/$suffix//g | print_3_columns
2241     exit 0
2242 }
2243
2244 rand_list(){
2245     IFS=', '
2246     set -- $*
2247     unset IFS
2248     for thing; do
2249         comp=${thing%:*}
2250         prob=${thing#$comp}
2251         prob=${prob#:}
2252         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2253         echo "prob ${prob:-0.5}"
2254         printf '%s\n' $comp
2255     done
2256 }
2257
2258 do_random(){
2259     action=$1
2260     shift
2261     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2262     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2263 }
2264
2265 for opt do
2266     optval="${opt#*=}"
2267     case "$opt" in
2268         --extra-ldflags=*)
2269             add_ldflags $optval
2270         ;;
2271         --extra-libs=*)
2272             add_extralibs $optval
2273         ;;
2274         --disable-devices)
2275             disable $INDEV_LIST $OUTDEV_LIST
2276         ;;
2277         --enable-debug=*)
2278             debuglevel="$optval"
2279         ;;
2280         --disable-programs)
2281             disable $PROGRAM_LIST
2282         ;;
2283         --disable-everything)
2284             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2285         ;;
2286         --disable-all)
2287             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2288             disable $LIBRARY_LIST $PROGRAM_LIST doc
2289         ;;
2290         --enable-random|--disable-random)
2291             action=${opt%%-random}
2292             do_random ${action#--} $COMPONENT_LIST
2293         ;;
2294         --enable-random=*|--disable-random=*)
2295             action=${opt%%-random=*}
2296             do_random ${action#--} $optval
2297         ;;
2298         --enable-*=*|--disable-*=*)
2299             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2300             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2301             eval list=\$$(toupper $thing)_LIST
2302             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2303             list=$(filter "$name" $list)
2304             [ "$list" = "" ] && warn "Option $opt did not match anything"
2305             $action $list
2306         ;;
2307         --enable-?*|--disable-?*)
2308             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2309             if is_in $option $COMPONENT_LIST; then
2310                 test $action = disable && action=unset
2311                 eval $action \$$(toupper ${option%s})_LIST
2312             elif is_in $option $CMDLINE_SELECT; then
2313                 $action $option
2314             else
2315                 die_unknown $opt
2316             fi
2317         ;;
2318         --list-*)
2319             NAME="${opt#--list-}"
2320             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2321             NAME=${NAME%s}
2322             eval show_list $NAME \$$(toupper $NAME)_LIST
2323         ;;
2324         --help|-h) show_help
2325         ;;
2326         --fatal-warnings) enable fatal_warnings
2327         ;;
2328         *)
2329             optname="${opt%%=*}"
2330             optname="${optname#--}"
2331             optname=$(echo "$optname" | sed 's/-/_/g')
2332             if is_in $optname $CMDLINE_SET; then
2333                 eval $optname='$optval'
2334             elif is_in $optname $CMDLINE_APPEND; then
2335                 append $optname "$optval"
2336             else
2337                 die_unknown $opt
2338             fi
2339         ;;
2340     esac
2341 done
2342
2343 disabled logging && logfile=/dev/null
2344
2345 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2346 set >> $logfile
2347
2348 test -n "$cross_prefix" && enable cross_compile
2349
2350 if enabled cross_compile; then
2351     test -n "$arch" && test -n "$target_os" ||
2352         die "Must specify target arch and OS when cross-compiling"
2353 fi
2354
2355 ar_default="${cross_prefix}${ar_default}"
2356 cc_default="${cross_prefix}${cc_default}"
2357 cxx_default="${cross_prefix}${cxx_default}"
2358 nm_default="${cross_prefix}${nm_default}"
2359 pkg_config_default="${cross_prefix}${pkg_config_default}"
2360 ranlib="${cross_prefix}${ranlib}"
2361 strip_default="${cross_prefix}${strip_default}"
2362
2363 sysinclude_default="${sysroot}/usr/include"
2364
2365 case "$toolchain" in
2366     clang-asan)
2367         cc_default="clang"
2368         add_cflags  -faddress-sanitizer
2369         add_ldflags -faddress-sanitizer
2370     ;;
2371     clang-tsan)
2372         cc_default="clang"
2373         add_cflags  -fthread-sanitizer
2374         add_ldflags -fthread-sanitizer
2375     ;;
2376     msvc)
2377         cc_default="c99wrap cl"
2378         ld_default="c99wrap link"
2379         nm_default="dumpbin -symbols"
2380         ar_default="lib"
2381         target_os_default="win32"
2382     ;;
2383     ?*)
2384         die "Unknown toolchain $toolchain"
2385     ;;
2386 esac
2387
2388 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2389 enabled cross_compile || host_cc_default=$cc
2390 set_default host_cc
2391
2392 if ! $pkg_config --version >/dev/null 2>&1; then
2393     warn "$pkg_config not found, library detection may fail."
2394     pkg_config=false
2395 fi
2396
2397 exesuf() {
2398     case $1 in
2399         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2400     esac
2401 }
2402
2403 EXESUF=$(exesuf $target_os)
2404 HOSTEXESUF=$(exesuf $host_os)
2405
2406 # set temporary file name
2407 : ${TMPDIR:=$TEMPDIR}
2408 : ${TMPDIR:=$TMP}
2409 : ${TMPDIR:=/tmp}
2410
2411 if ! check_cmd mktemp -u XXXXXX; then
2412     # simple replacement for missing mktemp
2413     # NOT SAFE FOR GENERAL USE
2414     mktemp(){
2415         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2416     }
2417 fi
2418
2419 tmpfile(){
2420     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2421         (set -C; exec > $tmp) 2>/dev/null ||
2422         die "Unable to create temporary file in $TMPDIR."
2423     append TMPFILES $tmp
2424     eval $1=$tmp
2425 }
2426
2427 trap 'rm -f -- $TMPFILES' EXIT
2428
2429 tmpfile TMPASM .asm
2430 tmpfile TMPC   .c
2431 tmpfile TMPCPP .cpp
2432 tmpfile TMPE   $EXESUF
2433 tmpfile TMPH   .h
2434 tmpfile TMPO   .o
2435 tmpfile TMPS   .S
2436 tmpfile TMPSH  .sh
2437 tmpfile TMPV   .ver
2438
2439 unset -f mktemp
2440
2441 chmod +x $TMPE
2442
2443 # make sure we can execute files in $TMPDIR
2444 cat > $TMPSH 2>> $logfile <<EOF
2445 #! /bin/sh
2446 EOF
2447 chmod +x $TMPSH >> $logfile 2>&1
2448 if ! $TMPSH >> $logfile 2>&1; then
2449     cat <<EOF
2450 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2451 variable to another directory and make sure that it is not mounted noexec.
2452 EOF
2453     die "Sanity test failed."
2454 fi
2455
2456 ccc_flags(){
2457     for flag; do
2458         case $flag in
2459             -std=c99)           echo -c99                       ;;
2460             -mcpu=*)            echo -arch ${flag#*=}           ;;
2461             -mieee)             echo -ieee                      ;;
2462             -O*|-fast)          echo $flag                      ;;
2463             -fno-math-errno)    echo -assume nomath_errno       ;;
2464             -g)                 echo -g3                        ;;
2465             -Wall)              echo -msg_enable level2         ;;
2466             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2467             -Wl,*)              echo $flag                      ;;
2468             -f*|-W*)                                            ;;
2469             *)                  echo $flag                      ;;
2470         esac
2471    done
2472 }
2473
2474 msvc_flags(){
2475     for flag; do
2476         case $flag in
2477             -fomit-frame-pointer) echo -Oy ;;
2478             -g)                   echo -Z7 ;;
2479             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2480                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2481                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2482                                        -wd4554 \
2483                                        -wd4996 -wd4273 ;;
2484             -std=c99)             ;;
2485             -fno-math-errno)      ;;
2486             -fno-common)          ;;
2487             -fno-signed-zeros)    ;;
2488             -fPIC)                ;;
2489             -lz)                  echo zlib.lib ;;
2490             -lavifil32)           echo vfw32.lib ;;
2491             -lavicap32)           echo vfw32.lib user32.lib ;;
2492             -l*)                  echo ${flag#-l}.lib ;;
2493             *)                    echo $flag ;;
2494         esac
2495     done
2496 }
2497
2498 pgi_flags(){
2499     for flag; do
2500         case $flag in
2501             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2502             -fomit-frame-pointer) echo -Mnoframe ;;
2503             -g)                   echo -gopt ;;
2504             *)                    echo $flag ;;
2505         esac
2506     done
2507 }
2508
2509 suncc_flags(){
2510     for flag; do
2511         case $flag in
2512             -march=*|-mcpu=*)
2513                 case "${flag#*=}" in
2514                     native)                   echo -xtarget=native       ;;
2515                     v9|niagara)               echo -xarch=sparc          ;;
2516                     ultrasparc)               echo -xarch=sparcvis       ;;
2517                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2518                     i586|pentium)             echo -xchip=pentium        ;;
2519                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2520                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2521                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2522                     pentium4*)          echo -xtarget=pentium4           ;;
2523                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2524                     *-sse3)             echo -xarch=sse3                 ;;
2525                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2526                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2527                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2528                     amdfam10|barcelona)       echo -xtarget=barcelona    ;;
2529                     bdver*)                   echo -xarch=avx            ;;
2530                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2531                     k8|opteron|athlon64|athlon-fx)
2532                                               echo -xarch=sse2a          ;;
2533                     athlon*)                  echo -xarch=pentium_proa   ;;
2534                 esac
2535                 ;;
2536             -std=c99)             echo -xc99              ;;
2537             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2538             -fPIC)                echo -KPIC -xcode=pic32 ;;
2539             -W*,*)                echo $flag              ;;
2540             -f*-*|-W*|-mimpure-text)                      ;;
2541             -shared)              echo -G                 ;;
2542             *)                    echo $flag              ;;
2543         esac
2544     done
2545 }
2546
2547 tms470_flags(){
2548     for flag; do
2549         case $flag in
2550             -march=*|-mcpu=*)
2551                 case "${flag#*=}" in
2552                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2553                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2554                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2555                     armv6*|arm11*)          echo -mv=6   ;;
2556                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2557                                             echo -mv=5e  ;;
2558                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2559                 esac
2560                 ;;
2561             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2562             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2563             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2564             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2565             -msoft-float)   echo --float_support=vfplib       ;;
2566             -O[0-3]|-mf=*)  echo $flag                        ;;
2567             -g)             echo -g -mn                       ;;
2568             -pds=*)         echo $flag                        ;;
2569             -D*|-I*)        echo $flag                        ;;
2570             --gcc|--abi=*)  echo $flag                        ;;
2571             -me)            echo $flag                        ;;
2572         esac
2573     done
2574 }
2575
2576 probe_cc(){
2577     pfx=$1
2578     _cc=$2
2579
2580     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2581     unset _ld_o _ldflags _ld_lib _ld_path
2582     unset _depflags _DEPCMD _DEPFLAGS
2583     _flags_filter=echo
2584
2585     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2586         _type=llvm_gcc
2587         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2588         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2589         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2590         _cflags_speed='-O3'
2591         _cflags_size='-Os'
2592     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2593         _type=gcc
2594         gcc_version=$($_cc --version | head -n1)
2595         gcc_basever=$($_cc -dumpversion)
2596         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2597         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2598         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2599         if ! $_cc -dumpversion | grep -q '^2\.'; then
2600             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2601         fi
2602         _cflags_speed='-O3'
2603         _cflags_size='-Os'
2604     elif $_cc --version 2>/dev/null | grep -q Intel; then
2605         _type=icc
2606         _ident=$($_cc --version | head -n1)
2607         _depflags='-MMD'
2608         _cflags_speed='-O3'
2609         _cflags_size='-Os'
2610         _cflags_noopt='-O1'
2611     elif $_cc -v 2>&1 | grep -q xlc; then
2612         _type=xlc
2613         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2614         _cflags_speed='-O5'
2615         _cflags_size='-O5 -qcompact'
2616     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2617         _type=ccc
2618         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2619         _DEPFLAGS='-M'
2620         _cflags_speed='-fast'
2621         _cflags_size='-O1'
2622         _flags_filter=ccc_flags
2623     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2624         test -d "$sysroot" || die "No valid sysroot specified."
2625         _type=armcc
2626         _ident=$($_cc --vsn | head -n1)
2627         armcc_conf="$PWD/armcc.conf"
2628         $_cc --arm_linux_configure                 \
2629              --arm_linux_config_file="$armcc_conf" \
2630              --configure_sysroot="$sysroot"        \
2631              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2632              die "Error creating armcc configuration file."
2633         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2634         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2635         as_default="${cross_prefix}gcc"
2636         _depflags='-MMD'
2637         _cflags_speed='-O3'
2638         _cflags_size='-Os'
2639     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2640         _type=tms470
2641         _ident=$($_cc -version | head -n1 | tr -s ' ')
2642         _flags='--gcc --abi=eabi -me'
2643         _cc_e='-ppl -fe=$@'
2644         _cc_o='-fe=$@'
2645         _depflags='-ppa -ppd=$(@:.o=.d)'
2646         _cflags_speed='-O3 -mf=5'
2647         _cflags_size='-O3 -mf=2'
2648         _flags_filter=tms470_flags
2649     elif $_cc -v 2>&1 | grep -q clang; then
2650         _type=clang
2651         _ident=$($_cc --version | head -n1)
2652         _depflags='-MMD'
2653         _cflags_speed='-O3'
2654         _cflags_size='-Os'
2655     elif $_cc -V 2>&1 | grep -q Sun; then
2656         _type=suncc
2657         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2658         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2659         _DEPFLAGS='-xM1 -xc99'
2660         _ldflags='-std=c99'
2661         _cflags_speed='-O5'
2662         _cflags_size='-O5 -xspace'
2663         _flags_filter=suncc_flags
2664     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2665         _type=pathscale
2666         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2667         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2668         _cflags_speed='-O2'
2669         _cflags_size='-Os'
2670         _flags_filter='filter_out -Wdisabled-optimization'
2671     elif $_cc -v 2>&1 | grep -q Open64; then
2672         _type=open64
2673         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2674         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2675         _cflags_speed='-O2'
2676         _cflags_size='-Os'
2677         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2678     elif $_cc -V 2>&1 | grep -q Portland; then
2679         _type=pgi
2680         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2681         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2682         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2683         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2684         _cflags_noopt="-O1"
2685         _flags_filter=pgi_flags
2686     elif $_cc 2>&1 | grep -q Microsoft; then
2687         _type=msvc
2688         _ident=$($cc 2>&1 | head -n1)
2689         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2690         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2691         _cflags_speed="-O2"
2692         _cflags_size="-O1"
2693         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2694         if $_cc 2>&1 | grep -q Linker; then
2695             _ld_o='-out $@'
2696         else
2697             _ld_o='-Fe$@'
2698         fi
2699         _cc_o='-Fo $@'
2700         _cc_e='-P -Fi $@'
2701         _flags_filter=msvc_flags
2702         _ld_lib='lib%.a'
2703         _ld_path='-libpath:'
2704         _flags='-nologo'
2705         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2706         if [ $pfx = hostcc ]; then
2707             append _cflags -Dsnprintf=_snprintf
2708         fi
2709         disable stripping
2710     fi
2711
2712     eval ${pfx}_type=\$_type
2713     eval ${pfx}_ident=\$_ident
2714 }
2715
2716 set_ccvars(){
2717     eval ${1}_C=\${_cc_c-\${${1}_C}}
2718     eval ${1}_E=\${_cc_e-\${${1}_E}}
2719     eval ${1}_O=\${_cc_o-\${${1}_O}}
2720
2721     if [ -n "$_depflags" ]; then
2722         eval ${1}_DEPFLAGS=\$_depflags
2723     else
2724         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2725         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2726         eval DEP${1}FLAGS=\$_flags
2727     fi
2728 }
2729
2730 probe_cc cc "$cc"
2731 cflags_filter=$_flags_filter
2732 cflags_speed=$_cflags_speed
2733 cflags_size=$_cflags_size
2734 cflags_noopt=$_cflags_noopt
2735 add_cflags $_flags $_cflags
2736 cc_ldflags=$_ldflags
2737 set_ccvars CC
2738
2739 probe_cc hostcc "$host_cc"
2740 host_cflags_filter=$_flags_filter
2741 add_host_cflags  $_flags $_cflags
2742 set_ccvars HOSTCC
2743
2744 test -n "$cc_type" && enable $cc_type ||
2745     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2746
2747 : ${as_default:=$cc}
2748 : ${dep_cc_default:=$cc}
2749 : ${ld_default:=$cc}
2750 : ${host_ld_default:=$host_cc}
2751 set_default ar as dep_cc ld host_ld
2752
2753 probe_cc as "$as"
2754 asflags_filter=$_flags_filter
2755 add_asflags $_flags $_cflags
2756 set_ccvars AS
2757
2758 probe_cc ld "$ld"
2759 ldflags_filter=$_flags_filter
2760 add_ldflags $_flags $_ldflags
2761 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2762 LD_O=${_ld_o-$LD_O}
2763 LD_LIB=${_ld_lib-$LD_LIB}
2764 LD_PATH=${_ld_path-$LD_PATH}
2765
2766 probe_cc hostld "$host_ld"
2767 host_ldflags_filter=$_flags_filter
2768 add_host_ldflags $_flags $_ldflags
2769 HOSTLD_O=${_ld_o-$HOSTLD_O}
2770
2771 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2772     probe_cc depcc "$dep_cc"
2773     CCDEP=${_DEPCMD:-$DEPCMD}
2774     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2775     DEPCCFLAGS=$_flags
2776 fi
2777
2778 if $ar 2>&1 | grep -q Microsoft; then
2779     arflags="-nologo"
2780     ar_o='-out:$@'
2781 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2782     arflags="rq"
2783     ar_o='$@'
2784 else
2785     arflags="rc"
2786     ar_o='$@'
2787 fi
2788
2789 add_cflags $extra_cflags
2790 add_cxxflags $extra_cxxflags
2791 add_asflags $extra_cflags
2792
2793 if test -n "$sysroot"; then
2794     case "$cc_type" in
2795         gcc|llvm_gcc|clang)
2796             add_cppflags --sysroot="$sysroot"
2797             add_ldflags --sysroot="$sysroot"
2798         ;;
2799         tms470)
2800             add_cppflags -I"$sysinclude"
2801             add_ldflags  --sysroot="$sysroot"
2802         ;;
2803     esac
2804 fi
2805
2806 if test "$cpu" = host; then
2807     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2808
2809     case "$cc_type" in
2810         gcc|llvm_gcc)
2811             check_native(){
2812                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2813                 sed -n "/cc1.*$1=/{
2814                             s/.*$1=\\([^ ]*\\).*/\\1/
2815                             p
2816                             q
2817                         }" $TMPE
2818             }
2819             cpu=$(check_native -march || check_native -mcpu)
2820         ;;
2821     esac
2822
2823     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2824 fi
2825
2826 # Deal with common $arch aliases
2827 case "$arch" in
2828     aarch64|arm64)
2829         arch="aarch64"
2830     ;;
2831     arm*|iPad*)
2832         arch="arm"
2833     ;;
2834     mips*|IP*)
2835         arch="mips"
2836     ;;
2837     parisc*|hppa*)
2838         arch="parisc"
2839     ;;
2840     "Power Macintosh"|ppc*|powerpc*)
2841         arch="ppc"
2842     ;;
2843     s390|s390x)
2844         arch="s390"
2845     ;;
2846     sh4|sh)
2847         arch="sh4"
2848     ;;
2849     sun4u|sparc*)
2850         arch="sparc"
2851     ;;
2852     tilegx|tile-gx)
2853         arch="tilegx"
2854     ;;
2855     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2856         arch="x86"
2857     ;;
2858 esac
2859
2860 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2861 enable $arch
2862
2863 # Add processor-specific flags
2864 if enabled aarch64; then
2865
2866     case $cpu in
2867         armv*)
2868             cpuflags="-march=$cpu"
2869         ;;
2870         *)
2871             cpuflags="-mcpu=$cpu"
2872         ;;
2873     esac
2874
2875 elif enabled alpha; then
2876
2877     cpuflags="-mcpu=$cpu"
2878
2879 elif enabled arm; then
2880
2881     check_arm_arch() {
2882         check_cpp_condition stddef.h \
2883             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2884             $cpuflags
2885     }
2886
2887     probe_arm_arch() {
2888         if   check_arm_arch 4;        then echo armv4;
2889         elif check_arm_arch 4T;       then echo armv4t;
2890         elif check_arm_arch 5;        then echo armv5;
2891         elif check_arm_arch 5E;       then echo armv5e;
2892         elif check_arm_arch 5T;       then echo armv5t;
2893         elif check_arm_arch 5TE;      then echo armv5te;
2894         elif check_arm_arch 5TEJ;     then echo armv5te;
2895         elif check_arm_arch 6;        then echo armv6;
2896         elif check_arm_arch 6J;       then echo armv6j;
2897         elif check_arm_arch 6K;       then echo armv6k;
2898         elif check_arm_arch 6Z;       then echo armv6z;
2899         elif check_arm_arch 6ZK;      then echo armv6zk;
2900         elif check_arm_arch 6T2;      then echo armv6t2;
2901         elif check_arm_arch 7;        then echo armv7;
2902         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2903         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2904         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2905         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2906         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2907         fi
2908     }
2909
2910     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2911
2912     case $cpu in
2913         armv*)
2914             cpuflags="-march=$cpu"
2915             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2916         ;;
2917         *)
2918             cpuflags="-mcpu=$cpu"
2919             case $cpu in
2920                 cortex-a*)                               subarch=armv7a  ;;
2921                 cortex-r*)                               subarch=armv7r  ;;
2922                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2923                 arm11*)                                  subarch=armv6   ;;
2924                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2925                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2926                 *)                             subarch=$(probe_arm_arch) ;;
2927             esac
2928         ;;
2929     esac
2930
2931     case "$subarch" in
2932         armv5t*)    enable fast_clz                ;;
2933         armv[6-8]*) enable fast_clz fast_unaligned ;;
2934     esac
2935
2936 elif enabled avr32; then
2937
2938     case $cpu in
2939         ap7[02]0[0-2])
2940             subarch="avr32_ap"
2941             cpuflags="-mpart=$cpu"
2942         ;;
2943         ap)
2944             subarch="avr32_ap"
2945             cpuflags="-march=$cpu"
2946         ;;
2947         uc3[ab]*)
2948             subarch="avr32_uc"
2949             cpuflags="-mcpu=$cpu"
2950         ;;
2951         uc)
2952             subarch="avr32_uc"
2953             cpuflags="-march=$cpu"
2954         ;;
2955     esac
2956
2957 elif enabled bfin; then
2958
2959     cpuflags="-mcpu=$cpu"
2960
2961 elif enabled mips; then
2962
2963     cpuflags="-march=$cpu"
2964
2965     case $cpu in
2966         24kc)
2967             disable mipsfpu
2968             disable mipsdspr1
2969             disable mipsdspr2
2970         ;;
2971         24kf*)
2972             disable mipsdspr1
2973             disable mipsdspr2
2974         ;;
2975         24kec|34kc|1004kc)
2976             disable mipsfpu
2977             disable mipsdspr2
2978         ;;
2979         24kef*|34kf*|1004kf*)
2980             disable mipsdspr2
2981         ;;
2982         74kc)
2983             disable mipsfpu
2984         ;;
2985     esac
2986
2987 elif enabled ppc; then
2988
2989     case $(tolower $cpu) in
2990         601|ppc601|powerpc601)
2991             cpuflags="-mcpu=601"
2992             disable altivec
2993         ;;
2994         603*|ppc603*|powerpc603*)
2995             cpuflags="-mcpu=603"
2996             disable altivec
2997         ;;
2998         604*|ppc604*|powerpc604*)
2999             cpuflags="-mcpu=604"
3000             disable altivec
3001         ;;
3002         g3|75*|ppc75*|powerpc75*)
3003             cpuflags="-mcpu=750"
3004             disable altivec
3005         ;;
3006         g4|745*|ppc745*|powerpc745*)
3007             cpuflags="-mcpu=7450"
3008         ;;
3009         74*|ppc74*|powerpc74*)
3010             cpuflags="-mcpu=7400"
3011         ;;
3012         g5|970|ppc970|powerpc970)
3013             cpuflags="-mcpu=970"
3014         ;;
3015         power[3-7]*)
3016             cpuflags="-mcpu=$cpu"
3017         ;;
3018         cell)
3019             cpuflags="-mcpu=cell"
3020             enable ldbrx
3021         ;;
3022         e500mc)
3023             cpuflags="-mcpu=e500mc"
3024             disable altivec
3025         ;;
3026         e500v2)
3027             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3028             disable altivec
3029         ;;
3030         e500)
3031             cpuflags="-mcpu=8540 -mhard-float"
3032             disable altivec
3033         ;;
3034     esac
3035
3036 elif enabled sparc; then
3037
3038     case $cpu in
3039         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3040             cpuflags="-mcpu=$cpu"
3041             disable vis
3042         ;;
3043         ultrasparc*|niagara[234])
3044             cpuflags="-mcpu=$cpu"
3045         ;;
3046     esac
3047
3048 elif enabled x86; then
3049
3050     case $cpu in
3051         i[345]86|pentium)
3052             cpuflags="-march=$cpu"
3053             disable mmx
3054         ;;
3055         # targets that do NOT support conditional mov (cmov)
3056         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3057             cpuflags="-march=$cpu"
3058             disable cmov
3059         ;;
3060         # targets that do support conditional mov (cmov)
3061         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3062             cpuflags="-march=$cpu"
3063             enable cmov
3064             enable fast_cmov
3065         ;;
3066         # targets that do support conditional mov but on which it's slow
3067         pentium4|pentium4m|prescott|nocona)
3068             cpuflags="-march=$cpu"
3069             enable cmov
3070             disable fast_cmov
3071         ;;
3072     esac
3073
3074 fi
3075
3076 if [ "$cpu" != generic ]; then
3077     add_cflags  $cpuflags
3078     add_asflags $cpuflags
3079 fi
3080
3081 # compiler sanity check
3082 check_exec <<EOF
3083 int main(void){ return 0; }
3084 EOF
3085 if test "$?" != 0; then
3086     echo "$cc is unable to create an executable file."
3087     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3088         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3089         echo "Only do this if you know what cross compiling means."
3090     fi
3091     die "C compiler test failed."
3092 fi
3093
3094 add_cppflags -D_ISOC99_SOURCE
3095 add_cxxflags -D__STDC_CONSTANT_MACROS
3096 check_cflags -std=c99
3097 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3098 #include <stdlib.h>
3099 EOF
3100 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3101 #include <stdlib.h>
3102 EOF
3103
3104 check_host_cflags -std=c99
3105 check_host_cflags -Wall
3106
3107 check_64bit(){
3108     arch32=$1
3109     arch64=$2
3110     expr=$3
3111     check_code cc "" "int test[2*($expr) - 1]" &&
3112         subarch=$arch64 || subarch=$arch32
3113 }
3114
3115 case "$arch" in
3116     aarch64|alpha|ia64)
3117         spic=$shared
3118     ;;
3119     mips)
3120         check_64bit mips mips64 '_MIPS_SIM > 1'
3121         spic=$shared
3122     ;;
3123     parisc)
3124         check_64bit parisc parisc64 'sizeof(void *) > 4'
3125         spic=$shared
3126     ;;
3127     ppc)
3128         check_64bit ppc ppc64 'sizeof(void *) > 4'
3129         spic=$shared
3130     ;;
3131     sparc)
3132         check_64bit sparc sparc64 'sizeof(void *) > 4'
3133         spic=$shared
3134     ;;
3135     x86)
3136         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3137         if test "$subarch" = "x86_64"; then
3138             spic=$shared
3139         fi
3140     ;;
3141     ppc)
3142         check_cc <<EOF && subarch="ppc64"
3143         int test[(int)sizeof(char*) - 7];
3144 EOF
3145     ;;
3146 esac
3147
3148 enable $subarch
3149 enabled spic && enable pic
3150
3151 # OS specific
3152 case $target_os in
3153     haiku)
3154         prefix_default="/boot/common"
3155         network_extralibs="-lnetwork"
3156         host_libs=
3157         ;;
3158     sunos)
3159         FFSERVERLDFLAGS=""
3160         SHFLAGS='-shared -Wl,-h,$$(@F)'
3161         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3162         network_extralibs="-lsocket -lnsl"
3163         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3164         # When using suncc to build, the Solaris linker will mark
3165         # an executable with each instruction set encountered by
3166         # the Solaris assembler.  As our libraries contain their own
3167         # guards for processor-specific code, instead suppress
3168         # generation of the HWCAPS ELF section on Solaris x86 only.
3169         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3170         nm_default='nm -P -g'
3171         ;;
3172     netbsd)
3173         disable symver
3174         oss_indev_extralibs="-lossaudio"
3175         oss_outdev_extralibs="-lossaudio"
3176         enabled gcc || check_ldflags -Wl,-zmuldefs
3177         ;;
3178     openbsd|bitrig)
3179         disable symver
3180         SHFLAGS='-shared'
3181         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3182         SLIB_INSTALL_LINKS=
3183         oss_indev_extralibs="-lossaudio"
3184         oss_outdev_extralibs="-lossaudio"
3185         ;;
3186     dragonfly)
3187         disable symver
3188         ;;
3189     freebsd)
3190         ;;
3191     bsd/os)
3192         add_extralibs -lpoll -lgnugetopt
3193         strip="strip -d"
3194         ;;
3195     darwin)
3196         gas="gas-preprocessor.pl $cc"
3197         enabled ppc && add_asflags -force_cpusubtype_ALL
3198         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3199         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3200         strip="${strip} -x"
3201         add_ldflags -Wl,-dynamic,-search_paths_first
3202         SLIBSUF=".dylib"
3203         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3204         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3205         FFSERVERLDFLAGS=-Wl,-bind_at_load
3206         objformat="macho"
3207         enabled x86_64 && objformat="macho64"
3208         enabled_any pic shared ||
3209             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3210         ;;
3211     mingw32*)
3212         if test $target_os = "mingw32ce"; then
3213             disable network
3214         else
3215             target_os=mingw32
3216         fi
3217         LIBTARGET=i386
3218         if enabled x86_64; then
3219             LIBTARGET="i386:x86-64"
3220         elif enabled arm; then
3221             LIBTARGET=arm-wince
3222         fi
3223         shlibdir_default="$bindir_default"
3224         SLIBPREF=""
3225         SLIBSUF=".dll"
3226         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3227         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3228         dlltool="${cross_prefix}dlltool"
3229         if check_cmd lib.exe -list; then
3230             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3231             if enabled x86_64; then
3232                 LIBTARGET=x64
3233             fi
3234         elif check_cmd $dlltool --version; then
3235             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3236         fi
3237         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3238         SLIB_INSTALL_LINKS=
3239         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3240         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3241         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3242         objformat="win32"
3243         ranlib=:
3244         enable dos_paths
3245         ;;
3246     win32|win64)
3247         if enabled shared; then
3248             # Link to the import library instead of the normal static library
3249             # for shared libs.
3250             LD_LIB='%.lib'
3251             # Cannot build shared and static libraries at the same time with
3252             # MSVC.
3253             disable static
3254         fi
3255         shlibdir_default="$bindir_default"
3256         SLIBPREF=""
3257         SLIBSUF=".dll"
3258         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3259         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3260         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3261         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3262         SLIB_INSTALL_LINKS=
3263         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3264         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3265         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3266         objformat="win32"
3267         ranlib=:
3268         enable dos_paths
3269         ;;
3270     cygwin*)
3271         target_os=cygwin
3272         shlibdir_default="$bindir_default"
3273         SLIBPREF="cyg"
3274         SLIBSUF=".dll"
3275         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3276         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3277         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3278         SLIB_INSTALL_LINKS=
3279         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3280         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3281         objformat="win32"
3282         enable dos_paths
3283         ;;
3284     *-dos|freedos|opendos)
3285         network_extralibs="-lsocket"
3286         objformat="coff"
3287         enable dos_paths
3288         add_cppflags -U__STRICT_ANSI__
3289         ;;
3290     linux)
3291         enable dv1394
3292         ;;
3293     irix*)
3294         target_os=irix
3295         ranlib="echo ignoring ranlib"
3296         ;;
3297     os/2*)
3298         strip="lxlite -CS"
3299         ln_s="cp -f"
3300         objformat="aout"
3301         add_cppflags -D_GNU_SOURCE
3302         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3303         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3304         FFSERVERLDFLAGS=""
3305         LIBSUF="_s.a"
3306         SLIBPREF=""
3307         SLIBSUF=".dll"
3308         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3309         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3310         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3311             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3312             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3313             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3314             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3315             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3316         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3317             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3318         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3319         enable dos_paths
3320         enable_weak os2threads
3321         ;;
3322     gnu/kfreebsd)
3323         add_cppflags -D_BSD_SOURCE
3324         ;;
3325     gnu)
3326         ;;
3327     qnx)
3328         add_cppflags -D_QNX_SOURCE
3329         network_extralibs="-lsocket"
3330         ;;
3331     symbian)
3332         SLIBSUF=".dll"
3333         enable dos_paths
3334         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3335         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3336         add_ldflags -Wl,--target1-abs,--no-undefined \
3337                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3338                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3339         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3340                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3341                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3342         ;;
3343     osf1)
3344         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3345         FFSERVERLDFLAGS=
3346         ;;
3347     minix)
3348         ;;
3349     plan9)
3350         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3351                      -D_REENTRANT_SOURCE        \
3352                      -D_RESEARCH_SOURCE         \
3353                      -DFD_SETSIZE=96            \
3354                      -DHAVE_SOCK_OPTS
3355         add_compat strtod.o strtod=avpriv_strtod
3356         network_extralibs='-lbsd'
3357         exeobjs=compat/plan9/main.o
3358         disable ffserver
3359         ln_s='ln -s -f'
3360         cp_f='cp'
3361         ;;
3362     none)
3363         ;;
3364     *)
3365         die "Unknown OS '$target_os'."
3366         ;;
3367 esac
3368
3369 # determine libc flavour
3370
3371 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3372 if check_cpp_condition features.h "defined __UCLIBC__"; then
3373     libc_type=uclibc
3374     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3375 elif check_cpp_condition features.h "defined __GLIBC__"; then
3376     libc_type=glibc
3377     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3378 # MinGW headers can be installed on Cygwin, so check for newlib first.
3379 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3380     libc_type=newlib
3381     add_cppflags -U__STRICT_ANSI__
3382 elif check_header _mingw.h; then
3383     libc_type=mingw
3384     check_cpp_condition _mingw.h \
3385         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3386             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3387         die "ERROR: MinGW runtime version must be >= 3.15."
3388     add_cppflags -U__STRICT_ANSI__
3389     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3390             __MINGW64_VERSION_MAJOR < 3"; then
3391         add_compat msvcrt/snprintf.o
3392         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3393     fi
3394 elif check_func_headers stdlib.h _get_doserrno; then
3395     libc_type=msvcrt
3396     add_compat strtod.o strtod=avpriv_strtod
3397     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3398                                  _snprintf=avpriv_snprintf  \
3399                                  vsnprintf=avpriv_vsnprintf
3400 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3401     libc_type=klibc
3402 fi
3403
3404 test -n "$libc_type" && enable $libc_type
3405
3406 # hacks for compiler/libc/os combinations
3407
3408 if enabled_all tms470 glibc; then
3409     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3410     add_cppflags -D__USER_LABEL_PREFIX__=
3411     add_cppflags -D__builtin_memset=memset
3412     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3413     add_cflags   -pds=48    # incompatible redefinition of macro
3414 fi
3415
3416 if enabled_all ccc glibc; then
3417     add_ldflags -Wl,-z,now  # calls to libots crash without this
3418 fi
3419
3420 esc(){
3421     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3422 }
3423
3424 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3425
3426 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3427
3428 set_default $PATHS_LIST
3429 set_default nm
3430
3431 # we need to build at least one lib type
3432 if ! enabled_any static shared; then
3433     cat <<EOF
3434 At least one library type must be built.
3435 Specify --enable-static to build the static libraries or --enable-shared to
3436 build the shared libraries as well. To only build the shared libraries specify
3437 --disable-static in addition to --enable-shared.
3438 EOF
3439     exit 1;
3440 fi
3441
3442 die_license_disabled() {
3443     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3444 }
3445
3446 die_license_disabled_gpl() {
3447     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3448 }
3449
3450 die_license_disabled gpl libcdio
3451 die_license_disabled gpl libutvideo
3452 die_license_disabled gpl libx264
3453 die_license_disabled gpl libxavs
3454 die_license_disabled gpl libxvid
3455 die_license_disabled gpl x11grab
3456
3457 die_license_disabled nonfree libaacplus
3458 die_license_disabled nonfree libfaac
3459 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3460 enabled gpl && die_license_disabled_gpl nonfree openssl
3461
3462 die_license_disabled version3 libopencore_amrnb
3463 die_license_disabled version3 libopencore_amrwb
3464 die_license_disabled version3 libvo_aacenc
3465 die_license_disabled version3 libvo_amrwbenc
3466
3467 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3468
3469 disabled optimizations || check_cflags -fomit-frame-pointer
3470
3471 enable_pic() {
3472     enable pic
3473     add_cppflags -DPIC
3474     add_cflags   -fPIC
3475     add_asflags  -fPIC
3476 }
3477
3478 enabled pic && enable_pic
3479
3480 check_cc <<EOF || die "Symbol mangling check failed."
3481 int ff_extern;
3482 EOF
3483 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3484 extern_prefix=${sym%%ff_extern*}
3485
3486 check_cc <<EOF && enable_weak inline_asm
3487 void foo(void) { __asm__ volatile ("" ::); }
3488 EOF
3489
3490 _restrict=
3491 for restrict_keyword in restrict __restrict__ __restrict; do
3492     check_cc <<EOF && _restrict=$restrict_keyword && break
3493 void foo(char * $restrict_keyword p);
3494 EOF
3495 done
3496
3497 check_cc <<EOF && enable attribute_packed
3498 struct { int x; } __attribute__((packed)) x;
3499 EOF
3500
3501 check_cc <<EOF && enable attribute_may_alias
3502 union { int x; } __attribute__((may_alias)) x;
3503 EOF
3504
3505 check_cc <<EOF || die "endian test failed"
3506 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3507 EOF
3508 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3509
3510 if enabled alpha; then
3511
3512     check_cflags -mieee
3513
3514 elif enabled arm; then
3515
3516     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3517 float func(float a, float b){ return a+b; }
3518 EOF
3519
3520     enabled thumb && check_cflags -mthumb || check_cflags -marm
3521     nogas=die
3522
3523     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3524         enable vfp_args
3525     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3526         case "${cross_prefix:-$cc}" in
3527             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3528             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3529 __asm__ (".eabi_attribute 28, 1");
3530 int main(void) { return 0; }
3531 EOF
3532         esac
3533         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3534     fi
3535
3536     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3537     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3538     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3539     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3540     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3541     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3542
3543     [ $target_os = linux ] ||
3544         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3545             $ARCH_EXT_LIST_ARM
3546
3547     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3548     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3549
3550     enabled_all armv6t2 shared !pic && enable_pic
3551
3552 elif enabled mips; then
3553
3554     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3555     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3556      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3557     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3558      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3559     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3560      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3561     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3562      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3563
3564 elif enabled parisc; then
3565
3566     if enabled gcc; then
3567         case $($cc -dumpversion) in
3568             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3569         esac
3570     fi
3571
3572 elif enabled ppc; then
3573
3574     enable local_aligned_8 local_aligned_16
3575
3576     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3577     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3578     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3579     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3580
3581     # AltiVec flags: The FSF version of GCC differs from the Apple version
3582     if enabled altivec; then
3583         nogas=warn
3584         check_cflags -maltivec -mabi=altivec &&
3585         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3586         check_cflags -faltivec
3587
3588         # check if our compiler supports Motorola AltiVec C API
3589         check_cc <<EOF || disable altivec
3590 $inc_altivec_h
3591 int main(void) {
3592     vector signed int v1 = (vector signed int) { 0 };
3593     vector signed int v2 = (vector signed int) { 1 };
3594     v1 = vec_add(v1, v2);
3595     return 0;
3596 }
3597 EOF
3598
3599         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3600     fi
3601
3602 elif enabled sparc; then
3603
3604     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3605
3606 elif enabled x86; then
3607
3608     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3609
3610     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3611
3612     enable local_aligned_8 local_aligned_16
3613
3614     # check whether EBP is available on x86
3615     # As 'i' is stored on the stack, this program will crash
3616     # if the base pointer is used to access it because the
3617     # base pointer is cleared in the inline assembly code.
3618     check_exec_crash <<EOF && enable ebp_available
3619 volatile int i=0;
3620 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3621 return i;
3622 EOF
3623
3624     # check whether EBX is available on x86
3625     check_inline_asm ebx_available '""::"b"(0)' &&
3626         check_inline_asm ebx_available '"":::"%ebx"'
3627
3628     # check whether xmm clobbers are supported
3629     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3630
3631     # check whether binutils is new enough to compile SSSE3/MMXEXT
3632     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3633     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3634
3635     if ! disabled_any asm mmx yasm; then
3636         if check_cmd $yasmexe --version; then
3637             enabled x86_64 && yasm_extra="-m amd64"
3638             yasm_debug="-g dwarf2"
3639         elif check_cmd nasm -v; then
3640             yasmexe=nasm
3641             yasm_debug="-g -F dwarf"
3642             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3643         fi
3644
3645         YASMFLAGS="-f $objformat $yasm_extra"
3646         enabled pic               && append YASMFLAGS "-DPIC"
3647         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3648         case "$objformat" in
3649             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3650         esac
3651
3652         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3653             die "yasm not found, use --disable-yasm for a crippled build"
3654         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3655         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3656         check_yasm "CPU amdnop" && enable cpunop
3657     fi
3658
3659     case "$cpu" in
3660         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3661             disable fast_clz
3662         ;;
3663     esac
3664
3665 fi
3666
3667 if enabled asm; then
3668     as=${gas:=$as}
3669     check_as <<EOF && enable gnu_as || \
3670         $nogas "GNU assembler not found, install gas-preprocessor"
3671 .macro m n
3672 \n: .int 0
3673 .endm
3674 m x
3675 EOF
3676 fi
3677
3678 check_ldflags -Wl,--as-needed
3679
3680 if check_func dlopen; then
3681     ldl=
3682 elif check_func dlopen -ldl; then
3683     ldl=-ldl
3684 fi
3685
3686 if ! disabled network; then
3687     check_type "sys/types.h sys/socket.h" socklen_t
3688     check_type netdb.h "struct addrinfo"
3689     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3690     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3691     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3692     check_type netinet/in.h "struct sockaddr_in6"
3693     check_type poll.h "struct pollfd"
3694     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3695     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3696     check_type netinet/sctp.h "struct sctp_event_subscribe"
3697     check_func getaddrinfo $network_extralibs
3698     check_func getservbyport $network_extralibs
3699     # Prefer arpa/inet.h over winsock2
3700     if check_header arpa/inet.h ; then
3701         check_func closesocket
3702     elif check_header winsock2.h ; then
3703         check_func_headers winsock2.h closesocket -lws2 &&
3704             network_extralibs="-lws2" ||
3705         { check_func_headers winsock2.h closesocket -lws2_32 &&
3706             network_extralibs="-lws2_32"; }
3707         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3708         check_type ws2tcpip.h socklen_t
3709         check_type ws2tcpip.h "struct addrinfo"
3710         check_type ws2tcpip.h "struct group_source_req"
3711         check_type ws2tcpip.h "struct ip_mreq_source"
3712         check_type ws2tcpip.h "struct ipv6_mreq"
3713         check_type winsock2.h "struct pollfd"
3714         check_type ws2tcpip.h "struct sockaddr_in6"
3715         check_type ws2tcpip.h "struct sockaddr_storage"
3716         check_struct winsock2.h "struct sockaddr" sa_len
3717     else
3718         disable network
3719     fi
3720 fi
3721
3722 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3723 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3724
3725 check_func  access
3726 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3727 check_func  fcntl
3728 check_func  fork
3729 check_func  gethrtime
3730 check_func  getopt
3731 check_func  getrusage
3732 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3733 check_func  gettimeofday
3734 check_func  iconv || check_lib2 iconv.h iconv -liconv
3735 check_func  inet_aton $network_extralibs
3736 check_func  isatty
3737 check_func  localtime_r
3738 check_func  ${malloc_prefix}memalign            && enable memalign
3739 check_func  mkstemp
3740 check_func  mmap
3741 check_func  mprotect
3742 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3743 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3744 check_func  setrlimit
3745 check_func  strerror_r
3746 check_func  sched_getaffinity
3747 check_func  sysconf
3748 check_func  sysctl
3749 check_func  usleep
3750 check_func_headers conio.h kbhit
3751 check_func_headers windows.h PeekNamedPipe
3752 check_func_headers io.h setmode
3753 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3754 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3755 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3756 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3757 check_func_headers windows.h GetProcessAffinityMask
3758 check_func_headers windows.h GetProcessTimes
3759 check_func_headers windows.h GetSystemTimeAsFileTime
3760 check_func_headers windows.h MapViewOfFile
3761 check_func_headers windows.h SetConsoleTextAttribute
3762 check_func_headers windows.h Sleep
3763 check_func_headers windows.h VirtualAlloc
3764 check_func_headers glob.h glob
3765
3766 check_header direct.h
3767 check_header dlfcn.h
3768 check_header dxva.h
3769 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3770 check_header io.h
3771 check_header libcrystalhd/libcrystalhd_if.h
3772 check_header malloc.h
3773 check_header poll.h
3774 check_header sys/mman.h
3775 check_header sys/param.h
3776 check_header sys/resource.h
3777 check_header sys/select.h
3778 check_header sys/time.h
3779 check_header termios.h
3780 check_header unistd.h
3781 check_header vdpau/vdpau.h
3782 check_header vdpau/vdpau_x11.h
3783 check_header VideoDecodeAcceleration/VDADecoder.h
3784 check_header windows.h
3785 check_header X11/extensions/XvMClib.h
3786 check_header asm/types.h
3787
3788 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3789 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3790
3791 if ! disabled w32threads && ! enabled pthreads; then
3792     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3793 fi
3794
3795 # check for some common methods of building with pthread support
3796 # do this before the optional library checks as some of them require pthreads
3797 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3798     enable pthreads
3799     if check_func pthread_create; then
3800         :
3801     elif check_func pthread_create -pthread; then
3802         add_cflags -pthread
3803         add_extralibs -pthread
3804     elif check_func pthread_create -pthreads; then
3805         add_cflags -pthreads
3806         add_extralibs -pthreads
3807     elif check_func pthread_create -lpthreadGC2; then
3808         add_extralibs -lpthreadGC2
3809     elif ! check_lib pthread.h pthread_create -lpthread; then
3810         disable pthreads
3811     fi
3812 fi
3813
3814 for thread in $THREADS_LIST; do
3815     if enabled $thread; then
3816         test -n "$thread_type" &&
3817             die "ERROR: Only one thread type must be selected." ||
3818             thread_type="$thread"
3819     fi
3820 done
3821
3822 if enabled pthreads; then
3823   check_func pthread_cancel
3824 fi
3825
3826 check_lib math.h sin -lm && LIBM="-lm"
3827 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3828 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3829
3830 atan2f_args=2
3831 ldexpf_args=2
3832 powf_args=2
3833
3834 for func in $MATH_FUNCS; do
3835     eval check_mathfunc $func \${${func}_args:-1}
3836 done
3837
3838 # these are off by default, so fail if requested and not available
3839 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3840 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3841 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3842 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3843 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3844 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3845 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3846 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3847 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3848                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3849                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3850 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3851 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3852 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3853 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"
3854 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3855 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3856 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3857                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3858                         done || die "ERROR: libgsm not found"; }
3859 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3860 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3861 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3862 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3863 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3864 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3865 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3866 enabled libopenjpeg && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
3867                          check_lib openjpeg.h opj_version -lopenjpeg ||
3868                          die "ERROR: libopenjpeg not found"; }
3869 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3870 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3871 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3872 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3873 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3874 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3875 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3876     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3877     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3878 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3879 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3880                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3881                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3882 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3883 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3884 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3885 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3886 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3887 enabled libvpx     && {
3888     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3889                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3890     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
3891                                 die "ERROR: libvpx encoder version must be >=0.9.7"; }
3892     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3893     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3894 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3895                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3896                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3897 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3898 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3899 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3900                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3901                         die "ERROR: openal not found"; } &&
3902                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3903                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3904 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3905                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3906                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3907                         die "ERROR: openssl not found"; }
3908
3909 if enabled gnutls; then
3910     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3911     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3912 fi
3913
3914 # libdc1394 check
3915 if enabled libdc1394; then
3916     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3917         enable libdc1394_2; } ||
3918     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3919         enable libdc1394_1; } ||
3920     die "ERROR: No version of libdc1394 found "
3921 fi
3922
3923 SDL_CONFIG="${cross_prefix}sdl-config"
3924 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3925     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3926     enable sdl &&
3927     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3928 else
3929   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3930     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3931     sdl_libs=$("${SDL_CONFIG}" --libs)
3932     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3933     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3934     enable sdl &&
3935     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3936   fi
3937 fi
3938 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3939
3940 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3941 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3942 perl --version > /dev/null 2>&1 && enable perl || disable perl
3943 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3944 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
3945
3946 check_header linux/fb.h
3947 check_header linux/videodev.h
3948 check_header linux/videodev2.h
3949 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
3950
3951 check_header sys/videoio.h
3952
3953 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3954 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3955 # w32api 3.12 had it defined wrong
3956 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3957
3958 check_type "dshow.h" IBaseFilter
3959
3960 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3961 { check_header dev/bktr/ioctl_meteor.h &&
3962   check_header dev/bktr/ioctl_bt848.h; } ||
3963 { check_header machine/ioctl_meteor.h &&
3964   check_header machine/ioctl_bt848.h; } ||
3965 { check_header dev/video/meteor/ioctl_meteor.h &&
3966   check_header dev/video/bktr/ioctl_bt848.h; } ||
3967 check_header dev/ic/bt8xx.h
3968
3969 check_header sndio.h
3970 if check_struct sys/soundcard.h audio_buf_info bytes; then
3971     enable_safe sys/soundcard.h
3972 else
3973     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3974     #include <sys/soundcard.h>
3975     audio_buf_info abc;
3976 EOF
3977 fi
3978 check_header soundcard.h
3979
3980 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3981
3982 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3983     check_func jack_port_get_latency_range -ljack
3984
3985 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3986
3987 if enabled libcdio; then
3988     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3989 fi
3990
3991 enabled x11grab                                           &&
3992 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3993 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3994 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3995
3996 if ! disabled vaapi; then
3997     check_lib va/va.h vaInitialize -lva && {
3998         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3999         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
4000     } || disable vaapi
4001 fi
4002
4003 if ! disabled vdpau && enabled vdpau_vdpau_h; then
4004     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4005         { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." && disable vdpau; }
4006 fi
4007
4008 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4009 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
4010 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"
4011
4012 # add some useful compiler flags if supported
4013 check_cflags -Wdeclaration-after-statement
4014 check_cflags -Wall
4015 check_cflags -Wno-parentheses
4016 check_cflags -Wno-switch
4017 check_cflags -Wno-format-zero-length
4018 check_cflags -Wdisabled-optimization
4019 check_cflags -Wpointer-arith
4020 check_cflags -Wredundant-decls
4021 check_cflags -Wno-pointer-sign
4022 check_cflags -Wwrite-strings
4023 check_cflags -Wtype-limits
4024 check_cflags -Wundef
4025 check_cflags -Wmissing-prototypes
4026 check_cflags -Wno-pointer-to-int-cast
4027 check_cflags -Wstrict-prototypes
4028 enabled extra_warnings && check_cflags -Winline
4029
4030 # add some linker flags
4031 check_ldflags -Wl,--warn-common
4032 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4033 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4034
4035 enabled xmm_clobber_test &&
4036     check_ldflags -Wl,--wrap,avcodec_open2              \
4037                   -Wl,--wrap,avcodec_decode_audio4      \
4038                   -Wl,--wrap,avcodec_decode_video2      \
4039                   -Wl,--wrap,avcodec_decode_subtitle2   \
4040                   -Wl,--wrap,avcodec_encode_audio2      \
4041                   -Wl,--wrap,avcodec_encode_video       \
4042                   -Wl,--wrap,avcodec_encode_subtitle    \
4043                   -Wl,--wrap,sws_scale ||
4044     disable xmm_clobber_test
4045
4046 echo "X{};" > $TMPV
4047 if test_ldflags -Wl,--version-script,$TMPV; then
4048     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4049     check_cc <<EOF && enable symver_asm_label
4050 void ff_foo(void) __asm__ ("av_foo@VERSION");
4051 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4052 EOF
4053     check_cc <<EOF && enable symver_gnu_asm
4054 __asm__(".symver ff_foo,av_foo@VERSION");
4055 void ff_foo(void) {}
4056 EOF
4057 fi
4058
4059 if [ -z "$optflags" ]; then
4060     if enabled small; then
4061         optflags=$cflags_size
4062     elif enabled optimizations; then
4063         optflags=$cflags_speed
4064     else
4065         optflags=$cflags_noopt
4066     fi
4067 fi
4068
4069 check_optflags(){
4070     check_cflags "$@"
4071     enabled lto && check_ldflags "$@"
4072 }
4073
4074
4075 if enabled lto; then
4076     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4077     check_cflags  -flto
4078     check_ldflags -flto $cpuflags
4079 fi
4080
4081 check_optflags $optflags
4082 check_optflags -fno-math-errno
4083 check_optflags -fno-signed-zeros
4084
4085 enabled ftrapv && check_cflags -ftrapv
4086
4087 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4088 int x;
4089 EOF
4090
4091
4092 if enabled icc; then
4093     # Just warnings, no remarks
4094     check_cflags -w1
4095     # -wd: Disable following warnings
4096     # 144, 167, 556: -Wno-pointer-sign
4097     # 188: enumerated type mixed with another type
4098     # 1292: attribute "foo" ignored
4099     # 1419: external declaration in primary source file
4100     # 10006: ignoring unknown option -fno-signed-zeros
4101     # 10148: ignoring unknown option -Wno-parentheses
4102     # 10156: ignoring option '-W'; no argument required
4103     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4104     # 11030: Warning unknown option --as-needed
4105     # 10156: ignoring option '-export'; no argument required
4106     check_ldflags -wd10156,11030
4107     # Allow to compile with optimizations
4108     check_ldflags -march=$cpu
4109     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4110     enable ebp_available
4111     if enabled x86_32; then
4112         icc_version=$($cc -dumpversion)
4113         test ${icc_version%%.*} -ge 11 &&
4114             check_cflags -falign-stack=maintain-16-byte ||
4115             disable aligned_stack
4116     fi
4117 elif enabled ccc; then
4118     # disable some annoying warnings
4119     add_cflags -msg_disable bitnotint
4120     add_cflags -msg_disable mixfuncvoid
4121     add_cflags -msg_disable nonstandcast
4122     add_cflags -msg_disable unsupieee
4123 elif enabled gcc; then
4124     check_optflags -fno-tree-vectorize
4125     check_cflags -Werror=implicit-function-declaration
4126     check_cflags -Werror=missing-prototypes
4127     check_cflags -Werror=return-type
4128     check_cflags -Werror=vla
4129 elif enabled llvm_gcc; then
4130     check_cflags -mllvm -stack-alignment=16
4131 elif enabled clang; then
4132     check_cflags -mllvm -stack-alignment=16
4133     check_cflags -Qunused-arguments
4134     check_cflags -Werror=implicit-function-declaration
4135     check_cflags -Werror=missing-prototypes
4136     check_cflags -Werror=return-type
4137 elif enabled armcc; then
4138     # 2523: use of inline assembler is deprecated
4139     add_cflags -W${armcc_opt},--diag_suppress=2523
4140     add_cflags -W${armcc_opt},--diag_suppress=1207
4141     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4142     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4143     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4144     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4145 elif enabled tms470; then
4146     add_cflags -pds=824 -pds=837
4147 elif enabled pathscale; then
4148     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4149 elif enabled msvc; then
4150     enabled x86_32 && disable aligned_stack
4151 fi
4152
4153 case $target_os in
4154     osf1)
4155         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4156     ;;
4157     plan9)
4158         add_cppflags -Dmain=plan9_main
4159     ;;
4160 esac
4161
4162 enabled_any $THREADS_LIST      && enable threads
4163
4164 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4165
4166 check_deps $CONFIG_LIST       \
4167            $CONFIG_EXTRA      \
4168            $HAVE_LIST         \
4169            $ALL_COMPONENTS    \
4170
4171
4172 if test $target_os = "haiku"; then
4173     disable memalign
4174     disable posix_memalign
4175 fi
4176
4177 ! enabled_any memalign posix_memalign aligned_malloc &&
4178     enabled_any $need_memalign && enable memalign_hack
4179
4180 # add_dep lib dep
4181 # -> enable ${lib}_deps_${dep}
4182 # -> add $dep to ${lib}_deps only once
4183 add_dep() {
4184     lib=$1
4185     dep=$2
4186     enabled "${lib}_deps_${dep}" && return 0
4187     enable  "${lib}_deps_${dep}"
4188     prepend "${lib}_deps" $dep
4189 }
4190
4191 # merge deps lib components
4192 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4193 merge_deps() {
4194     lib=$1
4195     shift
4196     for comp in $*; do
4197         enabled $comp || continue
4198         eval "dep=\"\$${comp}_deps\""
4199         for d in $dep; do
4200             add_dep $lib $d
4201         done
4202     done
4203 }
4204
4205 merge_deps libavfilter $FILTER_LIST
4206
4207 echo "install prefix            $prefix"
4208 echo "source path               $source_path"
4209 echo "C compiler                $cc"
4210 echo "ARCH                      $arch ($cpu)"
4211 if test "$build_suffix" != ""; then
4212     echo "build suffix              $build_suffix"
4213 fi
4214 if test "$progs_suffix" != ""; then
4215     echo "progs suffix              $progs_suffix"
4216 fi
4217 if test "$extra_version" != ""; then
4218     echo "version string suffix     $extra_version"
4219 fi
4220 echo "big-endian                ${bigendian-no}"
4221 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4222 if enabled x86; then
4223     echo "${yasmexe}                      ${yasm-no}"
4224     echo "MMX enabled               ${mmx-no}"
4225     echo "MMXEXT enabled            ${mmxext-no}"
4226     echo "3DNow! enabled            ${amd3dnow-no}"
4227     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4228     echo "SSE enabled               ${sse-no}"
4229     echo "SSSE3 enabled             ${ssse3-no}"
4230     echo "AVX enabled               ${avx-no}"
4231     echo "FMA4 enabled              ${fma4-no}"
4232     echo "CMOV enabled              ${cmov-no}"
4233     echo "CMOV is fast              ${fast_cmov-no}"
4234     echo "EBX available             ${ebx_available-no}"
4235     echo "EBP available             ${ebp_available-no}"
4236 fi
4237 if enabled arm; then
4238     echo "ARMv5TE enabled           ${armv5te-no}"
4239     echo "ARMv6 enabled             ${armv6-no}"
4240     echo "ARMv6T2 enabled           ${armv6t2-no}"
4241     echo "VFP enabled               ${vfp-no}"
4242     echo "NEON enabled              ${neon-no}"
4243     echo "THUMB enabled             ${thumb-no}"
4244 fi
4245 if enabled mips; then
4246     echo "MIPS FPU enabled          ${mipsfpu-no}"
4247     echo "MIPS32R2 enabled          ${mips32r2-no}"
4248     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4249     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4250 fi
4251 if enabled ppc; then
4252     echo "AltiVec enabled           ${altivec-no}"
4253     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4254     echo "dcbzl available           ${dcbzl-no}"
4255 fi
4256 if enabled sparc; then
4257     echo "VIS enabled               ${vis-no}"
4258 fi
4259 echo "debug symbols             ${debug-no}"
4260 echo "strip symbols             ${stripping-no}"
4261 echo "optimize for size         ${small-no}"
4262 echo "optimizations             ${optimizations-no}"
4263 echo "static                    ${static-no}"
4264 echo "shared                    ${shared-no}"
4265 echo "postprocessing support    ${postproc-no}"
4266 echo "new filter support        ${avfilter-no}"
4267 echo "network support           ${network-no}"
4268 echo "threading support         ${thread_type-no}"
4269 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4270 echo "SDL support               ${sdl-no}"
4271 echo "AVISynth enabled          ${avisynth-no}"
4272 echo "frei0r enabled            ${frei0r-no}"
4273 echo "gnutls enabled            ${gnutls-no}"
4274 echo "libaacplus enabled        ${libaacplus-no}"
4275 echo "libass enabled            ${libass-no}"
4276 echo "libcaca enabled           ${libcaca-no}"
4277 echo "libcdio support           ${libcdio-no}"
4278 echo "libcelt enabled           ${libcelt-no}"
4279 echo "libdc1394 support         ${libdc1394-no}"
4280 echo "libfaac enabled           ${libfaac-no}"
4281 echo "libfdk-aac enabled        ${libfdk_aac-no}"
4282 echo "libgsm enabled            ${libgsm-no}"
4283 echo "libiec61883 support       ${libiec61883-no}"
4284 echo "libilbc enabled           ${libilbc-no}"
4285 echo "libmodplug enabled        ${libmodplug-no}"
4286 echo "libmp3lame enabled        ${libmp3lame-no}"
4287 echo "libnut enabled            ${libnut-no}"
4288 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
4289 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
4290 echo "libopencv support         ${libopencv-no}"
4291 echo "libopenjpeg enabled       ${libopenjpeg-no}"
4292 echo "libopus enabled           ${libopus-no}"
4293 echo "libpulse enabled          ${libpulse-no}"
4294 echo "librtmp enabled           ${librtmp-no}"
4295 echo "libschroedinger enabled   ${libschroedinger-no}"
4296 echo "libsoxr enabled           ${libsoxr-no}"
4297 echo "libspeex enabled          ${libspeex-no}"
4298 echo "libstagefright-h264 enabled    ${libstagefright_h264-no}"
4299 echo "libtheora enabled         ${libtheora-no}"
4300 echo "libtwolame enabled        ${libtwolame-no}"
4301 echo "libutvideo enabled        ${libutvideo-no}"
4302 echo "libv4l2 enabled           ${libv4l2-no}"
4303 echo "libvo-aacenc support      ${libvo_aacenc-no}"
4304 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
4305 echo "libvorbis enabled         ${libvorbis-no}"
4306 echo "libvpx enabled            ${libvpx-no}"
4307 echo "libx264 enabled           ${libx264-no}"
4308 echo "libxavs enabled           ${libxavs-no}"
4309 echo "libxvid enabled           ${libxvid-no}"
4310 echo "openal enabled            ${openal-no}"
4311 echo "openssl enabled           ${openssl-no}"
4312 echo "zlib enabled              ${zlib-no}"
4313 echo "bzlib enabled             ${bzlib-no}"
4314 echo "texi2html enabled         ${texi2html-no}"
4315 echo "perl enabled              ${perl-no}"
4316 echo "pod2man enabled           ${pod2man-no}"
4317 echo "makeinfo enabled          ${makeinfo-no}"
4318 test -n "$random_seed" &&
4319     echo "random seed               ${random_seed}"
4320 echo
4321
4322 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4323     echo "Enabled ${type}s:"
4324     eval list=\$$(toupper $type)_LIST
4325     print_enabled '_*' $list | print_3_columns
4326     echo
4327 done
4328
4329 license="LGPL version 2.1 or later"
4330 if enabled nonfree; then
4331     license="nonfree and unredistributable"
4332 elif enabled gplv3; then
4333     license="GPL version 3 or later"
4334 elif enabled lgplv3; then
4335     license="LGPL version 3 or later"
4336 elif enabled gpl; then
4337     license="GPL version 2 or later"
4338 fi
4339
4340 echo "License: $license"
4341
4342 echo "Creating config.mak and config.h..."
4343
4344 test -e Makefile || $ln_s "$source_path/Makefile" .
4345
4346 enabled stripping || strip="echo skipping strip"
4347
4348 config_files="$TMPH config.mak"
4349
4350 cat > config.mak <<EOF
4351 # Automatically generated by configure - do not modify!
4352 ifndef FFMPEG_CONFIG_MAK
4353 FFMPEG_CONFIG_MAK=1
4354 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4355 prefix=$prefix
4356 LIBDIR=\$(DESTDIR)$libdir
4357 SHLIBDIR=\$(DESTDIR)$shlibdir
4358 INCDIR=\$(DESTDIR)$incdir
4359 BINDIR=\$(DESTDIR)$bindir
4360 DATADIR=\$(DESTDIR)$datadir
4361 MANDIR=\$(DESTDIR)$mandir
4362 SRC_PATH=$source_path
4363 ifndef MAIN_MAKEFILE
4364 SRC_PATH:=\$(SRC_PATH:.%=..%)
4365 endif
4366 CC_IDENT=$cc_ident
4367 ARCH=$arch
4368 CC=$cc
4369 CXX=$cxx
4370 AS=$as
4371 LD=$ld
4372 DEPCC=$dep_cc
4373 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4374 DEPAS=$as
4375 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4376 YASM=$yasmexe
4377 DEPYASM=$yasmexe
4378 AR=$ar
4379 ARFLAGS=$arflags
4380 AR_O=$ar_o
4381 RANLIB=$ranlib
4382 CP=cp -p
4383 LN_S=$ln_s
4384 STRIP=$strip
4385 CPPFLAGS=$CPPFLAGS
4386 CFLAGS=$CFLAGS
4387 CXXFLAGS=$CXXFLAGS
4388 ASFLAGS=$ASFLAGS
4389 AS_C=$AS_C
4390 AS_O=$AS_O
4391 CC_C=$CC_C
4392 CC_E=$CC_E
4393 CC_O=$CC_O
4394 CXX_C=$CXX_C
4395 CXX_O=$CXX_O
4396 LD_O=$LD_O
4397 LD_LIB=$LD_LIB
4398 LD_PATH=$LD_PATH
4399 DLLTOOL=$dlltool
4400 LDFLAGS=$LDFLAGS
4401 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4402 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4403 YASMFLAGS=$YASMFLAGS
4404 BUILDSUF=$build_suffix
4405 PROGSSUF=$progs_suffix
4406 FULLNAME=$FULLNAME
4407 LIBPREF=$LIBPREF
4408 LIBSUF=$LIBSUF
4409 LIBNAME=$LIBNAME
4410 SLIBPREF=$SLIBPREF
4411 SLIBSUF=$SLIBSUF
4412 EXESUF=$EXESUF
4413 EXTRA_VERSION=$extra_version
4414 CCDEP=$CCDEP
4415 CXXDEP=$CXXDEP
4416 CCDEP_FLAGS=$CCDEP_FLAGS
4417 ASDEP=$ASDEP
4418 ASDEP_FLAGS=$ASDEP_FLAGS
4419 CC_DEPFLAGS=$CC_DEPFLAGS
4420 AS_DEPFLAGS=$AS_DEPFLAGS
4421 HOSTCC=$host_cc
4422 HOSTLD=$host_ld
4423 HOSTCFLAGS=$host_cflags
4424 HOSTEXESUF=$HOSTEXESUF
4425 HOSTLDFLAGS=$host_ldflags
4426 HOSTLIBS=$host_libs
4427 DEPHOSTCC=$host_cc
4428 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4429 HOSTCCDEP=$HOSTCCDEP
4430 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4431 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4432 HOSTCC_C=$HOSTCC_C
4433 HOSTCC_O=$HOSTCC_O
4434 HOSTLD_O=$HOSTLD_O
4435 TARGET_EXEC=$target_exec
4436 TARGET_PATH=$target_path
4437 LIBS-ffplay=$sdl_libs
4438 CFLAGS-ffplay=$sdl_cflags
4439 ZLIB=$($ldflags_filter -lz)
4440 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4441 EXTRALIBS=$extralibs
4442 COMPAT_OBJS=$compat_objs
4443 EXEOBJS=$exeobjs
4444 INSTALL=$install
4445 LIBTARGET=${LIBTARGET}
4446 SLIBNAME=${SLIBNAME}
4447 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4448 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4449 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4450 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4451 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4452 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4453 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4454 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4455 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4456 NOREDZONE_FLAGS=$noredzone_flags
4457 EOF
4458
4459 get_version(){
4460     lcname=lib${1}
4461     name=$(toupper $lcname)
4462     file=$source_path/$lcname/version.h
4463     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4464     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4465     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4466     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4467     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4468 }
4469
4470 map 'get_version $v' $LIBRARY_LIST
4471
4472 cat > $TMPH <<EOF
4473 /* Automatically generated by configure - do not modify! */
4474 #ifndef FFMPEG_CONFIG_H
4475 #define FFMPEG_CONFIG_H
4476 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4477 #define FFMPEG_LICENSE "$(c_escape $license)"
4478 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4479 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4480 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4481 #define av_restrict $_restrict
4482 #define EXTERN_PREFIX "${extern_prefix}"
4483 #define EXTERN_ASM ${extern_prefix}
4484 #define SLIBSUF "$SLIBSUF"
4485 #define HAVE_MMX2 HAVE_MMXEXT
4486 EOF
4487
4488 test -n "$assert_level" &&
4489     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4490
4491 test -n "$malloc_prefix" &&
4492     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4493
4494 if enabled yasm; then
4495     append config_files $TMPASM
4496     printf '' >$TMPASM
4497 fi
4498
4499 print_config ARCH_   "$config_files" $ARCH_LIST
4500 print_config HAVE_   "$config_files" $HAVE_LIST
4501 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4502                                      $CONFIG_EXTRA      \
4503                                      $ALL_COMPONENTS    \
4504
4505 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4506 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4507
4508 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4509 cp_if_changed $TMPH config.h
4510 touch .config
4511
4512 enabled yasm && cp_if_changed $TMPASM config.asm
4513
4514 cat > $TMPH <<EOF
4515 /* Generated by ffconf */
4516 #ifndef AVUTIL_AVCONFIG_H
4517 #define AVUTIL_AVCONFIG_H
4518 EOF
4519
4520 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4521
4522 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4523
4524 cp_if_changed $TMPH libavutil/avconfig.h
4525
4526 if test -n "$WARNINGS"; then
4527     printf "\n$WARNINGS"
4528     enabled fatal_warnings && exit 1
4529 fi
4530
4531 # build pkg-config files
4532
4533 pkgconfig_generate(){
4534     name=$1
4535     shortname=${name#lib}${build_suffix}
4536     comment=$2
4537     version=$3
4538     libs=$4
4539     requires=$5
4540     enabled ${name#lib} || return 0
4541     mkdir -p $name
4542     cat <<EOF > $name/$name${build_suffix}.pc
4543 prefix=$prefix
4544 exec_prefix=\${prefix}
4545 libdir=$libdir
4546 includedir=$incdir
4547
4548 Name: $name
4549 Description: $comment
4550 Version: $version
4551 Requires: $(enabled shared || echo $requires)
4552 Requires.private: $(enabled shared && echo $requires)
4553 Conflicts:
4554 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4555 Libs.private: $(enabled shared && echo $libs)
4556 Cflags: -I\${includedir}
4557 EOF
4558
4559 mkdir -p doc/examples/pc-uninstalled
4560 includedir=${source_path}
4561 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4562     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4563 prefix=
4564 exec_prefix=
4565 libdir=\${pcfiledir}/../../../$name
4566 includedir=${includedir}
4567
4568 Name: $name
4569 Description: $comment
4570 Version: $version
4571 Requires: $requires
4572 Conflicts:
4573 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4574 Cflags: -I\${includedir}
4575 EOF
4576 }
4577
4578 libavfilter_pc_deps="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4579 enabled libavfilter_deps_avcodec    && prepend libavfilter_pc_deps "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
4580 enabled libavfilter_deps_avformat   && prepend libavfilter_pc_deps "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
4581 enabled libavfilter_deps_avresample && prepend libavfilter_pc_deps "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
4582 enabled libavfilter_deps_swscale    && prepend libavfilter_pc_deps "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
4583 enabled libavfilter_deps_swresample && prepend libavfilter_pc_deps "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
4584 enabled libavfilter_deps_postproc   && prepend libavfilter_pc_deps "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
4585 libavfilter_pc_deps=${libavfilter_pc_deps%, }
4586
4587 libavdevice_pc_deps="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
4588 enabled lavfi_indev && prepend libavdevice_pc_deps "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
4589
4590 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4591 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4592 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
4593 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$libavdevice_pc_deps"
4594 pkgconfig_generate libavfilter "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$libavfilter_pc_deps"
4595 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4596 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4597 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4598 pkgconfig_generate libswresample "FFmpeg audio resampling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4599
4600 fix_ffmpeg_remote(){
4601     git_remote_from=$1
4602     git_remote_to=$2
4603     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4604     if [ "$fixme_remote" != "" ]; then
4605         echolog "
4606 Outdated domain in git config, the official domain for ffmpeg git is since
4607 November 2011, source.ffmpeg.org, both the old and the new point to the same
4608 repository and server. To update it enter the following commands:
4609 "
4610         for remote in $fixme_remote; do
4611             echolog "git remote set-url $remote $git_remote_to"
4612         done
4613     fi
4614 }
4615
4616 if test -f "$source_path/.git/config"; then
4617     remote_from=git.videolan.org
4618     remote_to=source.ffmpeg.org
4619     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4620     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4621 fi