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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89
  90 Licensing options:
  91   --enable-gpl             allow use of GPL code, the resulting libs
  92                            and binaries will be under GPL [no]
  93   --enable-version3        upgrade (L)GPL to version 3 [no]
  94   --enable-nonfree         allow use of nonfree code, the resulting libs
  95                            and binaries will be unredistributable [no]
  96
  97 Configuration options:
  98   --disable-static         do not build static libraries [no]
  99   --enable-shared          build shared libraries [no]
 100   --enable-small           optimize for size instead of speed
 101   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 102   --enable-gray            enable full grayscale support (slower color)
 103   --disable-swscale-alpha  disable alpha channel support in swscale
 104   --disable-all            disable building components, libraries and programs
 105
 106 Program options:
 107   --disable-programs       do not build command line programs
 108   --disable-ffmpeg         disable ffmpeg build
 109   --disable-ffplay         disable ffplay build
 110   --disable-ffprobe        disable ffprobe build
 111   --disable-ffserver       disable ffserver build
 112
 113 Documentation options:
 114   --disable-doc            do not build documentation
 115   --disable-htmlpages      do not build HTML documentation pages
 116   --disable-manpages       do not build man documentation pages
 117   --disable-podpages       do not build POD documentation pages
 118   --disable-txtpages       do not build text documentation pages
 119
 120 Component options:
 121   --disable-avdevice       disable libavdevice build
 122   --disable-avcodec        disable libavcodec build
 123   --disable-avformat       disable libavformat build
 124   --disable-avutil         disable libavutil build
 125   --disable-swresample     disable libswresample build
 126   --disable-swscale        disable libswscale build
 127   --disable-postproc       disable libpostproc build
 128   --disable-avfilter       disable libavfilter build
 129   --enable-avresample      enable libavresample build [no]
 130   --disable-pthreads       disable pthreads [auto]
 131   --disable-w32threads     disable Win32 threads [auto]
 132   --disable-os2threads     disable OS/2 threads [auto]
 133   --enable-x11grab         enable X11 grabbing [no]
 134   --disable-network        disable network support [no]
 135   --disable-dct            disable DCT code
 136   --disable-dwt            disable DWT code
 137   --disable-lsp            disable LSP code
 138   --disable-lzo            disable LZO decoder code
 139   --disable-mdct           disable MDCT code
 140   --disable-rdft           disable RDFT code
 141   --disable-fft            disable FFT code
 142   --enable-dxva2           enable DXVA2 code
 143   --enable-vaapi           enable VAAPI code [autodetect]
 144   --enable-vda             enable VDA code   [autodetect]
 145   --enable-vdpau           enable VDPAU code [autodetect]
 146
 147 Individual component options:
 148   --disable-everything     disable all components listed below
 149   --disable-encoder=NAME   disable encoder NAME
 150   --enable-encoder=NAME    enable encoder NAME
 151   --disable-encoders       disable all encoders
 152   --disable-decoder=NAME   disable decoder NAME
 153   --enable-decoder=NAME    enable decoder NAME
 154   --disable-decoders       disable all decoders
 155   --disable-hwaccel=NAME   disable hwaccel NAME
 156   --enable-hwaccel=NAME    enable hwaccel NAME
 157   --disable-hwaccels       disable all hwaccels
 158   --disable-muxer=NAME     disable muxer NAME
 159   --enable-muxer=NAME      enable muxer NAME
 160   --disable-muxers         disable all muxers
 161   --disable-demuxer=NAME   disable demuxer NAME
 162   --enable-demuxer=NAME    enable demuxer NAME
 163   --disable-demuxers       disable all demuxers
 164   --enable-parser=NAME     enable parser NAME
 165   --disable-parser=NAME    disable parser NAME
 166   --disable-parsers        disable all parsers
 167   --enable-bsf=NAME        enable bitstream filter NAME
 168   --disable-bsf=NAME       disable bitstream filter NAME
 169   --disable-bsfs           disable all bitstream filters
 170   --enable-protocol=NAME   enable protocol NAME
 171   --disable-protocol=NAME  disable protocol NAME
 172   --disable-protocols      disable all protocols
 173   --enable-indev=NAME      enable input device NAME
 174   --disable-indev=NAME     disable input device NAME
 175   --disable-indevs         disable input devices
 176   --enable-outdev=NAME     enable output device NAME
 177   --disable-outdev=NAME    disable output device NAME
 178   --disable-outdevs        disable output devices
 179   --disable-devices        disable all devices
 180   --enable-filter=NAME     enable filter NAME
 181   --disable-filter=NAME    disable filter NAME
 182   --disable-filters        disable all filters
 183
 184 External library support:
 185   --enable-avisynth        enable reading of AVISynth script files [no]
 186   --enable-bzlib           enable bzlib [autodetect]
 187   --enable-fontconfig      enable fontconfig
 188   --enable-frei0r          enable frei0r video filtering
 189   --enable-gnutls          enable gnutls [no]
 190   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 191   --enable-libass          enable libass subtitles rendering [no]
 192   --enable-libbluray       enable BluRay reading using libbluray [no]
 193   --enable-libcaca         enable textual display using libcaca
 194   --enable-libcelt         enable CELT decoding via libcelt [no]
 195   --enable-libcdio         enable audio CD grabbing with libcdio
 196   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 197                            and libraw1394 [no]
 198   --enable-libfaac         enable AAC encoding via libfaac [no]
 199   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 200   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 201   --enable-libfreetype     enable libfreetype [no]
 202   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 203   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 204   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 205   --enable-libmodplug      enable ModPlug via libmodplug [no]
 206   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 207   --enable-libnut          enable NUT (de)muxing via libnut,
 208                            native (de)muxer exists [no]
 209   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 210   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 211   --enable-libopencv       enable video filtering via libopencv [no]
 212   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 213   --enable-libopus         enable Opus decoding via libopus [no]
 214   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 215   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 216   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 217   --enable-libsoxr         enable Include libsoxr resampling [no]
 218   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 219   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 220   --enable-libtheora       enable Theora encoding via libtheora [no]
 221   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 222   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 223   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 224   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 225   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 226   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 227                            native implementation exists [no]
 228   --enable-libvpx          enable VP8 de/encoding via libvpx [no]
 229   --enable-libx264         enable H.264 encoding via x264 [no]
 230   --enable-libxavs         enable AVS encoding via xavs [no]
 231   --enable-libxvid         enable Xvid encoding via xvidcore,
 232                            native MPEG-4/Xvid encoder exists [no]
 233   --enable-openal          enable OpenAL 1.1 capture support [no]
 234   --enable-openssl         enable openssl [no]
 235   --enable-zlib            enable zlib [autodetect]
 236
 237 Advanced options (experts only):
 238   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 239   --enable-cross-compile   assume a cross-compiler is used
 240   --sysroot=PATH           root of cross-build tree
 241   --sysinclude=PATH        location of cross-build system headers
 242   --target-os=OS           compiler targets OS [$target_os]
 243   --target-exec=CMD        command to run executables on target
 244   --target-path=DIR        path to view of build directory on target
 245   --toolchain=NAME         set tool defaults according to NAME
 246   --nm=NM                  use nm tool NM [$nm_default]
 247   --ar=AR                  use archive tool AR [$ar_default]
 248   --as=AS                  use assembler AS [$as_default]
 249   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 250   --cc=CC                  use C compiler CC [$cc_default]
 251   --cxx=CXX                use C compiler CXX [$cxx_default]
 252   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 253   --ld=LD                  use linker LD [$ld_default]
 254   --host-cc=HOSTCC         use host C compiler HOSTCC
 255   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 256   --host-ld=HOSTLD         use host linker HOSTLD
 257   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 258   --host-libs=HLIBS        use libs HLIBS when linking for host
 259   --host-os=OS             compiler host OS [$target_os]
 260   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 261   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 262   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 263   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 264   --extra-version=STRING   version string suffix []
 265   --optflags=OPTFLAGS      override optimization-related compiler flags
 266   --build-suffix=SUFFIX    library name suffix []
 267   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 268   --progs-suffix=SUFFIX    program name suffix []
 269   --arch=ARCH              select architecture [$arch]
 270   --cpu=CPU                select the minimum required CPU (affects
 271                            instruction selection, may crash on older CPUs)
 272   --enable-pic             build position-independent code
 273   --enable-sram            allow use of on-chip SRAM
 274   --enable-thumb           compile for Thumb instruction set
 275   --disable-symver         disable symbol versioning
 276   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 277   --disable-safe-bitstream-reader
 278                            disable buffer boundary checking in bitreaders
 279                            (faster, but may crash)
 280   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 281   --enable-lto             use link-time optimization
 282
 283 Optimization options (experts only):
 284   --disable-asm            disable all assembler optimizations
 285   --disable-altivec        disable AltiVec optimizations
 286   --disable-amd3dnow       disable 3DNow! optimizations
 287   --disable-amd3dnowext    disable 3DNow! extended optimizations
 288   --disable-mmx            disable MMX optimizations
 289   --disable-mmxext         disable MMXEXT optimizations
 290   --disable-sse            disable SSE optimizations
 291   --disable-sse2           disable SSE2 optimizations
 292   --disable-sse3           disable SSE3 optimizations
 293   --disable-ssse3          disable SSSE3 optimizations
 294   --disable-sse4           disable SSE4 optimizations
 295   --disable-sse42          disable SSE4.2 optimizations
 296   --disable-avx            disable AVX optimizations
 297   --disable-fma4           disable FMA4 optimizations
 298   --disable-armv5te        disable armv5te optimizations
 299   --disable-armv6          disable armv6 optimizations
 300   --disable-armv6t2        disable armv6t2 optimizations
 301   --disable-vfp            disable VFP optimizations
 302   --disable-neon           disable NEON optimizations
 303   --disable-vis            disable VIS optimizations
 304   --disable-inline-asm     disable use of inline assembler
 305   --disable-yasm           disable use of yasm assembler
 306   --disable-mips32r2       disable MIPS32R2 optimizations
 307   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 308   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 309   --disable-mipsfpu        disable floating point MIPS optimizations
 310   --disable-fast-unaligned consider unaligned accesses slow
 311
 312 Developer options (useful when working on FFmpeg itself):
 313   --enable-coverage        build with test coverage instrumentation
 314   --disable-debug          disable debugging symbols
 315   --enable-debug=LEVEL     set the debug level [$debuglevel]
 316   --disable-optimizations  disable compiler optimizations
 317   --enable-extra-warnings  enable more compiler warnings
 318   --disable-stripping      disable stripping of executables and shared libraries
 319   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 320                            2 causes a slowdown at runtime.
 321   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 322   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 323                            leaks and errors, using the specified valgrind binary.
 324                            Cannot be combined with --target-exec
 325   --enable-ftrapv          Trap arithmetic overflows
 326   --samples=PATH           location of test samples for FATE, if not set use
 327                            \$FATE_SAMPLES at make invocation time.
 328   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 329                            should be used only for debugging purposes)
 330   --enable-random          randomly enable/disable components
 331   --disable-random
 332   --enable-random=LIST     randomly enable/disable specific components or
 333   --disable-random=LIST    component groups. LIST is a comma-separated list
 334                            of NAME[:PROB] entries where NAME is a component
 335                            (group) and PROB the probability associated with
 336                            NAME (default 0.5).
 337   --random-seed=VALUE      seed value for --enable/disable-random
 338
 339 NOTE: Object files are built at the place where configure is launched.
 340 EOF
 341   exit 0
 342 }
 343
 344 quotes='""'
 345
 346 log(){
 347     echo "$@" >> $logfile
 348 }
 349
 350 log_file(){
 351     log BEGIN $1
 352     pr -n -t $1 >> $logfile
 353     log END $1
 354 }
 355
 356 echolog(){
 357     log "$@"
 358     echo "$@"
 359 }
 360
 361 warn(){
 362     log "WARNING: $*"
 363     WARNINGS="${WARNINGS}WARNING: $*\n"
 364 }
 365
 366 die(){
 367     echolog "$@"
 368     cat <<EOF
 369
 370 If you think configure made a mistake, make sure you are using the latest
 371 version from Git.  If the latest version fails, report the problem to the
 372 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 373 EOF
 374     if disabled logging; then
 375         cat <<EOF
 376 Rerun configure with logging enabled (do not use --disable-logging), and
 377 include the log this produces with your report.
 378 EOF
 379     else
 380         cat <<EOF
 381 Include the log file "$logfile" produced by configure as this will help
 382 solving the problem.
 383 EOF
 384     fi
 385     exit 1
 386 }
 387
 388 # Avoid locale weirdness, besides we really just want to translate ASCII.
 389 toupper(){
 390     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 391 }
 392
 393 tolower(){
 394     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 395 }
 396
 397 c_escape(){
 398     echo "$*" | sed 's/["\\]/\\\0/g'
 399 }
 400
 401 sh_quote(){
 402     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 403     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 404     echo "$v"
 405 }
 406
 407 cleanws(){
 408     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 409 }
 410
 411 filter(){
 412     pat=$1
 413     shift
 414     for v; do
 415         eval "case $v in $pat) echo $v ;; esac"
 416     done
 417 }
 418
 419 filter_out(){
 420     pat=$1
 421     shift
 422     for v; do
 423         eval "case $v in $pat) ;; *) echo $v ;; esac"
 424     done
 425 }
 426
 427 map(){
 428     m=$1
 429     shift
 430     for v; do eval $m; done
 431 }
 432
 433 add_suffix(){
 434     suffix=$1
 435     shift
 436     for v; do echo ${v}${suffix}; done
 437 }
 438
 439 set_all(){
 440     value=$1
 441     shift
 442     for var in $*; do
 443         eval $var=$value
 444     done
 445 }
 446
 447 set_weak(){
 448     value=$1
 449     shift
 450     for var; do
 451         eval : \${$var:=$value}
 452     done
 453 }
 454
 455 set_safe(){
 456     var=$1
 457     shift
 458     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
 459 }
 460
 461 get_safe(){
 462     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
 463 }
 464
 465 pushvar(){
 466     for var in $*; do
 467         eval level=\${${var}_level:=0}
 468         eval ${var}_${level}="\$$var"
 469         eval ${var}_level=$(($level+1))
 470     done
 471 }
 472
 473 popvar(){
 474     for var in $*; do
 475         eval level=\${${var}_level:-0}
 476         test $level = 0 && continue
 477         eval level=$(($level-1))
 478         eval $var="\${${var}_${level}}"
 479         eval ${var}_level=$level
 480         eval unset ${var}_${level}
 481     done
 482 }
 483
 484 enable(){
 485     set_all yes $*
 486 }
 487
 488 disable(){
 489     set_all no $*
 490 }
 491
 492 enable_weak(){
 493     set_weak yes $*
 494 }
 495
 496 disable_weak(){
 497     set_weak no $*
 498 }
 499
 500 enable_safe(){
 501     for var; do
 502         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 503     done
 504 }
 505
 506 disable_safe(){
 507     for var; do
 508         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 509     done
 510 }
 511
 512 do_enable_deep(){
 513     for var; do
 514         enabled $var && continue
 515         eval sel="\$${var}_select"
 516         eval sgs="\$${var}_suggest"
 517         pushvar var sgs
 518         enable_deep $sel
 519         popvar sgs
 520         enable_deep_weak $sgs
 521         popvar var
 522     done
 523 }
 524
 525 enable_deep(){
 526     do_enable_deep $*
 527     enable $*
 528 }
 529
 530 enable_deep_weak(){
 531     do_enable_deep $*
 532     enable_weak $*
 533 }
 534
 535 enabled(){
 536     test "${1#!}" = "$1" && op== || op=!=
 537     eval test "x\$${1#!}" $op "xyes"
 538 }
 539
 540 disabled(){
 541     test "${1#!}" = "$1" && op== || op=!=
 542     eval test "x\$${1#!}" $op "xno"
 543 }
 544
 545 enabled_all(){
 546     for opt; do
 547         enabled $opt || return 1
 548     done
 549 }
 550
 551 disabled_all(){
 552     for opt; do
 553         disabled $opt || return 1
 554     done
 555 }
 556
 557 enabled_any(){
 558     for opt; do
 559         enabled $opt && return 0
 560     done
 561 }
 562
 563 disabled_any(){
 564     for opt; do
 565         disabled $opt && return 0
 566     done
 567     return 1
 568 }
 569
 570 set_default(){
 571     for opt; do
 572         eval : \${$opt:=\$${opt}_default}
 573     done
 574 }
 575
 576 is_in(){
 577     value=$1
 578     shift
 579     for var in $*; do
 580         [ $var = $value ] && return 0
 581     done
 582     return 1
 583 }
 584
 585 do_check_deps(){
 586     for cfg; do
 587         cfg="${cfg#!}"
 588         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 589         disabled ${cfg}_checking && continue
 590         enable ${cfg}_checking
 591         append allopts $cfg
 592
 593         eval dep_all="\$${cfg}_deps"
 594         eval dep_any="\$${cfg}_deps_any"
 595         eval dep_sel="\$${cfg}_select"
 596         eval dep_sgs="\$${cfg}_suggest"
 597         eval dep_ifa="\$${cfg}_if"
 598         eval dep_ifn="\$${cfg}_if_any"
 599
 600         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 601         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 602         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 603
 604         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 605         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 606         enabled_all  $dep_all || disable $cfg
 607         enabled_any  $dep_any || disable $cfg
 608         disabled_any $dep_sel && disable $cfg
 609
 610         if enabled $cfg; then
 611             enable_deep $dep_sel
 612             enable_deep_weak $dep_sgs
 613         fi
 614
 615         disable ${cfg}_checking
 616     done
 617 }
 618
 619 check_deps(){
 620     unset allopts
 621
 622     do_check_deps "$@"
 623
 624     for cfg in $allopts; do
 625         enabled $cfg || continue
 626         eval dep_extralibs="\$${cfg}_extralibs"
 627         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 628     done
 629 }
 630
 631 print_config(){
 632     pfx=$1
 633     files=$2
 634     shift 2
 635     map 'eval echo "$v \${$v:-no}"' "$@" |
 636     awk "BEGIN { split(\"$files\", files) }
 637         {
 638             c = \"$pfx\" toupper(\$1);
 639             v = \$2;
 640             sub(/yes/, 1, v);
 641             sub(/no/,  0, v);
 642             for (f in files) {
 643                 file = files[f];
 644                 if (file ~ /\\.h\$/) {
 645                     printf(\"#define %s %d\\n\", c, v) >>file;
 646                 } else if (file ~ /\\.asm\$/) {
 647                     printf(\"%%define %s %d\\n\", c, v) >>file;
 648                 } else if (file ~ /\\.mak\$/) {
 649                     n = -v ? \"\" : \"!\";
 650                     printf(\"%s%s=yes\\n\", n, c) >>file;
 651                 }
 652             }
 653         }"
 654 }
 655
 656 print_enabled(){
 657     suf=$1
 658     shift
 659     for v; do
 660         enabled $v && printf "%s\n" ${v%$suf};
 661     done
 662 }
 663
 664 append(){
 665     var=$1
 666     shift
 667     eval "$var=\"\$$var $*\""
 668 }
 669
 670 prepend(){
 671     var=$1
 672     shift
 673     eval "$var=\"$* \$$var\""
 674 }
 675
 676 add_cppflags(){
 677     append CPPFLAGS "$@"
 678 }
 679
 680 add_cflags(){
 681     append CFLAGS $($cflags_filter "$@")
 682 }
 683
 684 add_cxxflags(){
 685     append CXXFLAGS $($cflags_filter "$@")
 686 }
 687
 688 add_asflags(){
 689     append ASFLAGS $($asflags_filter "$@")
 690 }
 691
 692 add_ldflags(){
 693     append LDFLAGS $($ldflags_filter "$@")
 694 }
 695
 696 add_extralibs(){
 697     prepend extralibs $($ldflags_filter "$@")
 698 }
 699
 700 add_host_cflags(){
 701     append host_cflags $($host_cflags_filter "$@")
 702 }
 703
 704 add_host_ldflags(){
 705     append host_ldflags $($host_ldflags_filter "$@")
 706 }
 707
 708 add_compat(){
 709     append compat_objs $1
 710     shift
 711     map 'add_cppflags -D$v' "$@"
 712 }
 713
 714 check_cmd(){
 715     log "$@"
 716     "$@" >> $logfile 2>&1
 717 }
 718
 719 cc_o(){
 720     eval printf '%s\\n' $CC_O
 721 }
 722
 723 cc_e(){
 724     eval printf '%s\\n' $CC_E
 725 }
 726
 727 check_cc(){
 728     log check_cc "$@"
 729     cat > $TMPC
 730     log_file $TMPC
 731     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 732 }
 733
 734 check_cxx(){
 735     log check_cxx "$@"
 736     cat > $TMPCPP
 737     log_file $TMPCPP
 738     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 739 }
 740
 741 check_cpp(){
 742     log check_cpp "$@"
 743     cat > $TMPC
 744     log_file $TMPC
 745     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 746 }
 747
 748 as_o(){
 749     eval printf '%s\\n' $AS_O
 750 }
 751
 752 check_as(){
 753     log check_as "$@"
 754     cat > $TMPS
 755     log_file $TMPS
 756     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 757 }
 758
 759 check_inline_asm(){
 760     log check_inline_asm "$@"
 761     name="$1"
 762     code="$2"
 763     shift 2
 764     disable $name
 765     check_cc "$@" <<EOF && enable $name
 766 void foo(void){ __asm__ volatile($code); }
 767 EOF
 768 }
 769
 770 check_insn(){
 771     log check_insn "$@"
 772     check_inline_asm ${1}_inline "\"$2\""
 773     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 774 }
 775
 776 check_yasm(){
 777     log check_yasm "$@"
 778     echo "$1" > $TMPS
 779     log_file $TMPS
 780     shift 1
 781     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 782 }
 783
 784 ld_o(){
 785     eval printf '%s\\n' $LD_O
 786 }
 787
 788 check_ld(){
 789     log check_ld "$@"
 790     type=$1
 791     shift 1
 792     flags=$(filter_out '-l*' $@)
 793     libs=$(filter '-l*' $@)
 794     check_$type $($cflags_filter $flags) || return
 795     flags=$($ldflags_filter $flags)
 796     libs=$($ldflags_filter $libs)
 797     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 798 }
 799
 800 check_code(){
 801     log check_code "$@"
 802     check=$1
 803     headers=$2
 804     code=$3
 805     shift 3
 806     {
 807         for hdr in $headers; do
 808             echo "#include <$hdr>"
 809         done
 810         echo "int main(void) { $code; return 0; }"
 811     } | check_$check "$@"
 812 }
 813
 814 check_cppflags(){
 815     log check_cppflags "$@"
 816     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 817 int x;
 818 EOF
 819 }
 820
 821 check_cflags(){
 822     log check_cflags "$@"
 823     set -- $($cflags_filter "$@")
 824     check_cc "$@" <<EOF && append CFLAGS "$@"
 825 int x;
 826 EOF
 827 }
 828
 829 check_cxxflags(){
 830     log check_cxxflags "$@"
 831     set -- $($cflags_filter "$@")
 832     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 833 int x;
 834 EOF
 835 }
 836
 837 test_ldflags(){
 838     log test_ldflags "$@"
 839     check_ld "cc" "$@" <<EOF
 840 int main(void){ return 0; }
 841 EOF
 842 }
 843
 844 check_ldflags(){
 845     log check_ldflags "$@"
 846     test_ldflags "$@" && add_ldflags "$@"
 847 }
 848
 849 check_header(){
 850     log check_header "$@"
 851     header=$1
 852     shift
 853     disable_safe $header
 854     check_cpp "$@" <<EOF && enable_safe $header
 855 #include <$header>
 856 int x;
 857 EOF
 858 }
 859
 860 check_func(){
 861     log check_func "$@"
 862     func=$1
 863     shift
 864     disable $func
 865     check_ld "cc" "$@" <<EOF && enable $func
 866 extern int $func();
 867 int main(void){ $func(); }
 868 EOF
 869 }
 870
 871 check_mathfunc(){
 872     log check_mathfunc "$@"
 873     func=$1
 874     narg=$2
 875     shift 2
 876     test $narg = 2 && args="f, g" || args="f"
 877     disable $func
 878     check_ld "cc" "$@" <<EOF && enable $func
 879 #include <math.h>
 880 float foo(float f, float g) { return $func($args); }
 881 int main(void){ return (int) foo; }
 882 EOF
 883 }
 884
 885 check_func_headers(){
 886     log check_func_headers "$@"
 887     headers=$1
 888     funcs=$2
 889     shift 2
 890     {
 891         for hdr in $headers; do
 892             echo "#include <$hdr>"
 893         done
 894         for func in $funcs; do
 895             echo "long check_$func(void) { return (long) $func; }"
 896         done
 897         echo "int main(void) { return 0; }"
 898     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 899 }
 900
 901 check_class_headers_cpp(){
 902     log check_class_headers_cpp "$@"
 903     headers=$1
 904     classes=$2
 905     shift 2
 906     {
 907         for hdr in $headers; do
 908             echo "#include <$hdr>"
 909         done
 910         echo "int main(void) { "
 911         i=1
 912         for class in $classes; do
 913             echo "$class obj$i;"
 914             i=$(expr $i + 1)
 915         done
 916         echo "return 0; }"
 917     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 918 }
 919
 920 check_cpp_condition(){
 921     log check_cpp_condition "$@"
 922     header=$1
 923     condition=$2
 924     shift 2
 925     check_cpp "$@" <<EOF
 926 #include <$header>
 927 #if !($condition)
 928 #error "unsatisfied condition: $condition"
 929 #endif
 930 EOF
 931 }
 932
 933 check_lib(){
 934     log check_lib "$@"
 935     header="$1"
 936     func="$2"
 937     shift 2
 938     check_header $header && check_func $func "$@" && add_extralibs "$@"
 939 }
 940
 941 check_lib2(){
 942     log check_lib2 "$@"
 943     headers="$1"
 944     funcs="$2"
 945     shift 2
 946     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 947 }
 948
 949 check_lib_cpp(){
 950     log check_lib_cpp "$@"
 951     headers="$1"
 952     classes="$2"
 953     shift 2
 954     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 955 }
 956
 957 check_pkg_config(){
 958     log check_pkg_config "$@"
 959     pkg="$1"
 960     headers="$2"
 961     funcs="$3"
 962     shift 3
 963     $pkg_config --exists $pkg 2>/dev/null || return
 964     pkg_cflags=$($pkg_config --cflags $pkg)
 965     pkg_libs=$($pkg_config --libs $pkg)
 966     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 967         set_safe ${pkg}_cflags $pkg_cflags   &&
 968         set_safe ${pkg}_libs   $pkg_libs
 969 }
 970
 971 check_exec(){
 972     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 973 }
 974
 975 check_exec_crash(){
 976     code=$(cat)
 977
 978     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 979     # are safe but may not be available everywhere.  Thus we use
 980     # raise(SIGTERM) instead.  The check is run in a subshell so we
 981     # can redirect the "Terminated" message from the shell.  SIGBUS
 982     # is not defined by standard C so it is used conditionally.
 983
 984     (check_exec "$@") >> $logfile 2>&1 <<EOF
 985 #include <signal.h>
 986 static void sighandler(int sig){
 987     raise(SIGTERM);
 988 }
 989 int func(void){
 990     $code
 991 }
 992 int (*func_ptr)(void) = func;
 993 int main(void){
 994     signal(SIGILL, sighandler);
 995     signal(SIGFPE, sighandler);
 996     signal(SIGSEGV, sighandler);
 997 #ifdef SIGBUS
 998     signal(SIGBUS, sighandler);
 999 #endif
1000     return func_ptr();
1001 }
1002 EOF
1003 }
1004
1005 check_type(){
1006     log check_type "$@"
1007     headers=$1
1008     type=$2
1009     shift 2
1010     disable_safe "$type"
1011     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1012 }
1013
1014 check_struct(){
1015     log check_type "$@"
1016     headers=$1
1017     struct=$2
1018     member=$3
1019     shift 3
1020     disable_safe "${struct}_${member}"
1021     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1022         enable_safe "${struct}_${member}"
1023 }
1024
1025 require(){
1026     name="$1"
1027     header="$2"
1028     func="$3"
1029     shift 3
1030     check_lib $header $func "$@" || die "ERROR: $name not found"
1031 }
1032
1033 require2(){
1034     name="$1"
1035     headers="$2"
1036     func="$3"
1037     shift 3
1038     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1039 }
1040
1041 require_cpp(){
1042     name="$1"
1043     headers="$2"
1044     classes="$3"
1045     shift 3
1046     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1047 }
1048
1049 require_pkg_config(){
1050     pkg="$1"
1051     check_pkg_config "$@" || die "ERROR: $pkg not found"
1052     add_cflags    $(get_safe ${pkg}_cflags)
1053     add_extralibs $(get_safe ${pkg}_libs)
1054 }
1055
1056 hostcc_o(){
1057     eval printf '%s\\n' $HOSTCC_O
1058 }
1059
1060 check_host_cc(){
1061     log check_host_cc "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1065 }
1066
1067 check_host_cflags(){
1068     log check_host_cflags "$@"
1069     set -- $($host_cflags_filter "$@")
1070     check_host_cc "$@" <<EOF && append host_cflags "$@"
1071 int x;
1072 EOF
1073 }
1074
1075 apply(){
1076     file=$1
1077     shift
1078     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1079 }
1080
1081 cp_if_changed(){
1082     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1083     mkdir -p "$(dirname $2)"
1084     $cp_f "$1" "$2"
1085 }
1086
1087 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1088 # system-dependent things.
1089
1090 COMPONENT_LIST="
1091     bsfs
1092     decoders
1093     demuxers
1094     encoders
1095     filters
1096     hwaccels
1097     indevs
1098     muxers
1099     outdevs
1100     parsers
1101     protocols
1102 "
1103
1104 DOCUMENT_LIST="
1105     doc
1106     htmlpages
1107     manpages
1108     podpages
1109     txtpages
1110 "
1111
1112 LIBRARY_LIST="
1113     avcodec
1114     avdevice
1115     avfilter
1116     avformat
1117     avresample
1118     avutil
1119     postproc
1120     swresample
1121     swscale
1122 "
1123
1124 PROGRAM_LIST="
1125     ffplay
1126     ffprobe
1127     ffserver
1128     ffmpeg
1129 "
1130
1131 CONFIG_LIST="
1132     $COMPONENT_LIST
1133     $DOCUMENT_LIST
1134     $LIBRARY_LIST
1135     $PROGRAM_LIST
1136     avisynth
1137     bzlib
1138     crystalhd
1139     dct
1140     dwt
1141     dxva2
1142     fast_unaligned
1143     fft
1144     fontconfig
1145     frei0r
1146     ftrapv
1147     gnutls
1148     gpl
1149     gray
1150     hardcoded_tables
1151     incompatible_fork_abi
1152     libaacplus
1153     libass
1154     libbluray
1155     libcaca
1156     libcdio
1157     libcelt
1158     libdc1394
1159     libfaac
1160     libfdk_aac
1161     libflite
1162     libfreetype
1163     libgsm
1164     libiec61883
1165     libilbc
1166     libmodplug
1167     libmp3lame
1168     libnut
1169     libopencore_amrnb
1170     libopencore_amrwb
1171     libopencv
1172     libopenjpeg
1173     libopus
1174     libpulse
1175     librtmp
1176     libschroedinger
1177     libsoxr
1178     libspeex
1179     libstagefright_h264
1180     libtheora
1181     libtwolame
1182     libutvideo
1183     libv4l2
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libx264
1189     libxavs
1190     libxvid
1191     lsp
1192     lzo
1193     mdct
1194     memalign_hack
1195     memory_poisoning
1196     network
1197     nonfree
1198     openal
1199     openssl
1200     pic
1201     rdft
1202     runtime_cpudetect
1203     safe_bitstream_reader
1204     shared
1205     small
1206     sram
1207     static
1208     swscale_alpha
1209     thumb
1210     vaapi
1211     vda
1212     vdpau
1213     version3
1214     xmm_clobber_test
1215     x11grab
1216     zlib
1217 "
1218
1219 THREADS_LIST='
1220     pthreads
1221     w32threads
1222     os2threads
1223 '
1224
1225 ARCH_LIST='
1226     aarch64
1227     alpha
1228     arm
1229     avr32
1230     avr32_ap
1231     avr32_uc
1232     bfin
1233     ia64
1234     m68k
1235     mips
1236     mips64
1237     parisc
1238     ppc
1239     ppc64
1240     s390
1241     sh4
1242     sparc
1243     sparc64
1244     tilegx
1245     tilepro
1246     tomi
1247     x86
1248     x86_32
1249     x86_64
1250 '
1251
1252 ARCH_EXT_LIST_ARM='
1253     armv5te
1254     armv6
1255     armv6t2
1256     neon
1257     vfp
1258     vfpv3
1259 '
1260
1261 ARCH_EXT_LIST_X86='
1262     amd3dnow
1263     amd3dnowext
1264     avx
1265     fma4
1266     mmx
1267     mmxext
1268     sse
1269     sse2
1270     sse3
1271     sse4
1272     sse42
1273     ssse3
1274 '
1275
1276 ARCH_EXT_LIST="
1277     $ARCH_EXT_LIST_ARM
1278     $ARCH_EXT_LIST_X86
1279     altivec
1280     ppc4xx
1281     vis
1282     mipsfpu
1283     mips32r2
1284     mipsdspr1
1285     mipsdspr2
1286 "
1287
1288 HAVE_LIST_CMDLINE='
1289     inline_asm
1290     symver
1291     yasm
1292 '
1293
1294 HAVE_LIST_PUB='
1295     bigendian
1296     fast_unaligned
1297     incompatible_fork_abi
1298 '
1299
1300 MATH_FUNCS="
1301     atanf
1302     atan2f
1303     cbrtf
1304     cosf
1305     exp2
1306     exp2f
1307     expf
1308     isinf
1309     isnan
1310     ldexpf
1311     llrint
1312     llrintf
1313     log2
1314     log2f
1315     log10f
1316     lrint
1317     lrintf
1318     powf
1319     rint
1320     round
1321     roundf
1322     sinf
1323     trunc
1324     truncf
1325 "
1326
1327 HAVE_LIST="
1328     $ARCH_EXT_LIST
1329     $(add_suffix _external $ARCH_EXT_LIST)
1330     $(add_suffix _inline   $ARCH_EXT_LIST)
1331     $HAVE_LIST_CMDLINE
1332     $HAVE_LIST_PUB
1333     $THREADS_LIST
1334     $MATH_FUNCS
1335     access
1336     aligned_malloc
1337     aligned_stack
1338     alsa_asoundlib_h
1339     altivec_h
1340     arpa_inet_h
1341     asm_mod_q
1342     asm_mod_y
1343     asm_types_h
1344     attribute_may_alias
1345     attribute_packed
1346     clock_gettime
1347     closesocket
1348     cmov
1349     CommandLineToArgvW
1350     cpunop
1351     CryptGenRandom
1352     dcbzl
1353     dev_bktr_ioctl_bt848_h
1354     dev_bktr_ioctl_meteor_h
1355     dev_ic_bt8xx_h
1356     dev_video_bktr_ioctl_bt848_h
1357     dev_video_meteor_ioctl_meteor_h
1358     direct_h
1359     dlfcn_h
1360     dlopen
1361     dos_paths
1362     dxva_h
1363     ebp_available
1364     ebx_available
1365     fast_64bit
1366     fast_clz
1367     fast_cmov
1368     fcntl
1369     fork
1370     getaddrinfo
1371     gethrtime
1372     getopt
1373     GetProcessAffinityMask
1374     GetProcessMemoryInfo
1375     GetProcessTimes
1376     GetSystemTimeAsFileTime
1377     getrusage
1378     getservbyport
1379     gettimeofday
1380     glob
1381     gnu_as
1382     ibm_asm
1383     inet_aton
1384     io_h
1385     isatty
1386     jack_port_get_latency_range
1387     kbhit
1388     ldbrx
1389     libdc1394_1
1390     libdc1394_2
1391     local_aligned_16
1392     local_aligned_8
1393     localtime_r
1394     loongson
1395     lzo1x_999_compress
1396     machine_ioctl_bt848_h
1397     machine_ioctl_meteor_h
1398     makeinfo
1399     malloc_h
1400     MapViewOfFile
1401     memalign
1402     mkstemp
1403     mm_empty
1404     mmap
1405     mprotect
1406     msvcrt
1407     nanosleep
1408     openjpeg_1_5_openjpeg_h
1409     PeekNamedPipe
1410     perl
1411     pod2man
1412     poll_h
1413     posix_memalign
1414     pthread_cancel
1415     rdtsc
1416     rsync_contimeout
1417     sched_getaffinity
1418     sdl
1419     sdl_video_size
1420     SetConsoleTextAttribute
1421     setmode
1422     setrlimit
1423     Sleep
1424     sndio_h
1425     socklen_t
1426     soundcard_h
1427     strerror_r
1428     struct_addrinfo
1429     struct_group_source_req
1430     struct_ip_mreq_source
1431     struct_ipv6_mreq
1432     struct_pollfd
1433     struct_rusage_ru_maxrss
1434     struct_sctp_event_subscribe
1435     struct_sockaddr_in6
1436     struct_sockaddr_sa_len
1437     struct_sockaddr_storage
1438     struct_v4l2_frmivalenum_discrete
1439     symver_asm_label
1440     symver_gnu_asm
1441     sysconf
1442     sysctl
1443     sys_mman_h
1444     sys_param_h
1445     sys_resource_h
1446     sys_select_h
1447     sys_soundcard_h
1448     sys_time_h
1449     sys_videoio_h
1450     termios_h
1451     texi2html
1452     threads
1453     unistd_h
1454     usleep
1455     vfp_args
1456     VirtualAlloc
1457     windows_h
1458     winsock2_h
1459     xform_asm
1460     xmm_clobbers
1461 "
1462
1463 # options emitted with CONFIG_ prefix but not available on the command line
1464 CONFIG_EXTRA="
1465     aandcttables
1466     ac3dsp
1467     error_resilience
1468     gcrypt
1469     golomb
1470     gplv3
1471     h264chroma
1472     h264dsp
1473     h264pred
1474     h264qpel
1475     huffman
1476     lgplv3
1477     lpc
1478     mpegaudio
1479     mpegaudiodsp
1480     mpegvideo
1481     mpegvideoenc
1482     nettle
1483     rangecoder
1484     rtpdec
1485     rtpenc_chain
1486     sinewin
1487     videodsp
1488     vp3dsp
1489 "
1490
1491 CMDLINE_SELECT="
1492     $ARCH_EXT_LIST
1493     $CONFIG_LIST
1494     $HAVE_LIST_CMDLINE
1495     $THREADS_LIST
1496     asm
1497     coverage
1498     cross_compile
1499     debug
1500     extra_warnings
1501     logging
1502     lto
1503     optimizations
1504     stripping
1505 "
1506
1507 PATHS_LIST='
1508     bindir
1509     datadir
1510     incdir
1511     libdir
1512     mandir
1513     prefix
1514     shlibdir
1515 '
1516
1517 CMDLINE_SET="
1518     $PATHS_LIST
1519     ar
1520     arch
1521     as
1522     assert_level
1523     build_suffix
1524     cc
1525     cpu
1526     cross_prefix
1527     cxx
1528     dep_cc
1529     extra_version
1530     host_cc
1531     host_cflags
1532     host_ld
1533     host_ldflags
1534     host_libs
1535     host_os
1536     install
1537     ld
1538     logfile
1539     malloc_prefix
1540     nm
1541     optflags
1542     pkg_config
1543     progs_suffix
1544     random_seed
1545     samples
1546     strip
1547     sysinclude
1548     sysroot
1549     target_exec
1550     target_os
1551     target_path
1552     toolchain
1553     valgrind
1554     yasmexe
1555 "
1556
1557 CMDLINE_APPEND="
1558     extra_cflags
1559     extra_cxxflags
1560 "
1561
1562 # code dependency declarations
1563
1564 # architecture extensions
1565
1566 armv5te_deps="arm"
1567 armv6_deps="arm"
1568 armv6t2_deps="arm"
1569 neon_deps="arm"
1570 vfp_deps="arm"
1571 vfpv3_deps="vfp"
1572
1573 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1574
1575 mipsfpu_deps="mips"
1576 mips32r2_deps="mips"
1577 mipsdspr1_deps="mips"
1578 mipsdspr2_deps="mips"
1579
1580 altivec_deps="ppc"
1581 ppc4xx_deps="ppc"
1582
1583 vis_deps="sparc"
1584
1585 x86_64_suggest="cmov fast_cmov"
1586
1587 amd3dnow_deps="mmx"
1588 amd3dnowext_deps="amd3dnow"
1589 mmx_deps="x86"
1590 mmxext_deps="mmx"
1591 sse_deps="mmxext"
1592 sse2_deps="sse"
1593 sse3_deps="sse2"
1594 ssse3_deps="sse3"
1595 sse4_deps="ssse3"
1596 sse42_deps="sse4"
1597 avx_deps="sse42"
1598 fma4_deps="avx"
1599
1600 mmx_external_deps="yasm"
1601 mmx_inline_deps="inline_asm"
1602 mmx_suggest="mmx_external mmx_inline"
1603
1604 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1605     eval dep=\$${ext}_deps
1606     eval ${ext}_external_deps='"${dep}_external"'
1607     eval ${ext}_inline_deps='"${dep}_inline"'
1608     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1609 done
1610
1611 aligned_stack_if_any="ppc x86"
1612 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1613 fast_clz_if_any="alpha avr32 mips ppc x86"
1614 fast_unaligned_if_any="ppc x86"
1615
1616 inline_asm_deps="!tms470"
1617 need_memalign="altivec neon sse"
1618
1619 symver_if_any="symver_asm_label symver_gnu_asm"
1620
1621 log2_deps="!msvcrt"
1622
1623 # subsystems
1624 dct_select="rdft"
1625 mdct_select="fft"
1626 rdft_select="fft"
1627 mpegaudio_select="mpegaudiodsp"
1628 mpegaudiodsp_select="dct"
1629 mpegvideo_select="videodsp"
1630 mpegvideoenc_select="mpegvideo"
1631
1632 # decoders / encoders
1633 aac_decoder_select="mdct sinewin"
1634 aac_encoder_select="mdct sinewin"
1635 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1636 ac3_decoder_select="mdct ac3dsp ac3_parser"
1637 ac3_encoder_select="mdct ac3dsp"
1638 ac3_fixed_encoder_select="mdct ac3dsp"
1639 alac_encoder_select="lpc"
1640 amrnb_decoder_select="lsp"
1641 amrwb_decoder_select="lsp"
1642 amv_encoder_select="aandcttables"
1643 atrac1_decoder_select="mdct sinewin"
1644 atrac3_decoder_select="mdct"
1645 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1646 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1647 cavs_decoder_select="golomb mpegvideo"
1648 comfortnoise_encoder_select="lpc"
1649 cook_decoder_select="mdct sinewin"
1650 cscd_decoder_select="lzo"
1651 cscd_decoder_suggest="zlib"
1652 dca_decoder_select="mdct"
1653 dirac_decoder_select="dwt golomb"
1654 dnxhd_encoder_select="aandcttables mpegvideoenc"
1655 dxa_decoder_select="zlib"
1656 eac3_decoder_select="ac3_decoder"
1657 eac3_encoder_select="ac3_encoder"
1658 eamad_decoder_select="aandcttables error_resilience mpegvideo"
1659 eatgq_decoder_select="aandcttables"
1660 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1661 exr_decoder_select="zlib"
1662 ffv1_decoder_select="golomb rangecoder"
1663 ffv1_encoder_select="rangecoder"
1664 ffvhuff_encoder_select="huffman"
1665 flac_decoder_select="golomb"
1666 flac_encoder_select="golomb lpc"
1667 flashsv_decoder_select="zlib"
1668 flashsv_encoder_select="zlib"
1669 flashsv2_encoder_select="zlib"
1670 flashsv2_decoder_select="zlib"
1671 flv_decoder_select="h263_decoder"
1672 flv_encoder_select="h263_encoder"
1673 fraps_decoder_select="huffman"
1674 h261_decoder_select="error_resilience mpegvideo"
1675 h261_encoder_select="aandcttables mpegvideoenc"
1676 h263_decoder_select="error_resilience h263_parser mpegvideo"
1677 h263_encoder_select="aandcttables error_resilience mpegvideoenc"
1678 h263i_decoder_select="h263_decoder"
1679 h263p_encoder_select="h263_encoder"
1680 h264_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1681 huffyuv_encoder_select="huffman"
1682 iac_decoder_select="fft mdct sinewin"
1683 imc_decoder_select="fft mdct sinewin"
1684 jpegls_decoder_select="golomb"
1685 jpegls_encoder_select="golomb"
1686 ljpeg_encoder_select="aandcttables mpegvideoenc"
1687 loco_decoder_select="golomb"
1688 mdec_decoder_select="error_resilience mpegvideo"
1689 mjpeg_encoder_select="aandcttables mpegvideoenc"
1690 mlp_decoder_select="mlp_parser"
1691 mp1_decoder_select="mpegaudio"
1692 mp1float_decoder_select="mpegaudio"
1693 mp2_decoder_select="mpegaudio"
1694 mp2float_decoder_select="mpegaudio"
1695 mp3_decoder_select="mpegaudio"
1696 mp3adu_decoder_select="mpegaudio"
1697 mp3adufloat_decoder_select="mpegaudio"
1698 mp3float_decoder_select="mpegaudio"
1699 mp3on4_decoder_select="mpegaudio"
1700 mp3on4float_decoder_select="mpegaudio"
1701 mpc7_decoder_select="mpegaudiodsp"
1702 mpc8_decoder_select="mpegaudiodsp"
1703 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1704 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1705 mpeg1video_decoder_select="error_resilience mpegvideo"
1706 mpeg1video_encoder_select="aandcttables error_resilience mpegvideoenc"
1707 mpeg2video_decoder_select="error_resilience mpegvideo"
1708 mpeg2video_encoder_select="aandcttables error_resilience mpegvideoenc"
1709 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1710 mpeg4_encoder_select="h263_encoder"
1711 msmpeg4v1_decoder_select="h263_decoder"
1712 msmpeg4v1_encoder_select="h263_encoder"
1713 msmpeg4v2_decoder_select="h263_decoder"
1714 msmpeg4v2_encoder_select="h263_encoder"
1715 msmpeg4v3_decoder_select="h263_decoder"
1716 msmpeg4v3_encoder_select="h263_encoder"
1717 mss2_decoder_select="vc1_decoder"
1718 nellymoser_decoder_select="mdct sinewin"
1719 nellymoser_encoder_select="mdct sinewin"
1720 nuv_decoder_select="lzo"
1721 png_decoder_select="zlib"
1722 png_encoder_select="zlib"
1723 qcelp_decoder_select="lsp"
1724 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1725 ra_144_encoder_select="lpc"
1726 ralf_decoder_select="golomb"
1727 rv10_decoder_select="h263_decoder"
1728 rv10_encoder_select="h263_encoder"
1729 rv20_decoder_select="h263_decoder"
1730 rv20_encoder_select="h263_encoder"
1731 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1732 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo"
1733 shorten_decoder_select="golomb"
1734 sipr_decoder_select="lsp"
1735 snow_decoder_select="dwt rangecoder"
1736 snow_encoder_select="aandcttables dwt error_resilience mpegvideoenc rangecoder"
1737 sonic_decoder_select="golomb"
1738 sonic_encoder_select="golomb"
1739 sonic_ls_encoder_select="golomb"
1740 svq1_decoder_select="error_resilience mpegvideo"
1741 svq1_encoder_select="aandcttables error_resilience mpegvideoenc"
1742 svq3_decoder_select="error_resilience golomb h264chroma h264dsp h264pred h264qpel mpegvideo"
1743 svq3_decoder_suggest="zlib"
1744 theora_decoder_select="vp3_decoder"
1745 tiff_decoder_suggest="zlib"
1746 tiff_encoder_suggest="zlib"
1747 truehd_decoder_select="mlp_parser"
1748 tscc_decoder_select="zlib"
1749 twinvq_decoder_select="mdct lsp sinewin"
1750 utvideo_encoder_select="huffman"
1751 vc1_decoder_select="h263_decoder h264chroma h264qpel"
1752 vc1image_decoder_select="vc1_decoder"
1753 vorbis_decoder_select="mdct"
1754 vorbis_encoder_select="mdct"
1755 vp3_decoder_select="vp3dsp videodsp"
1756 vp5_decoder_select="vp3dsp videodsp"
1757 vp6_decoder_select="huffman vp3dsp videodsp"
1758 vp6a_decoder_select="vp6_decoder"
1759 vp6f_decoder_select="vp6_decoder"
1760 vp8_decoder_select="h264pred videodsp"
1761 wmapro_decoder_select="mdct sinewin"
1762 wmav1_decoder_select="mdct sinewin"
1763 wmav1_encoder_select="mdct sinewin"
1764 wmav2_decoder_select="mdct sinewin"
1765 wmav2_encoder_select="mdct sinewin"
1766 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1767 wmv1_decoder_select="h263_decoder"
1768 wmv1_encoder_select="h263_encoder"
1769 wmv2_decoder_select="h263_decoder"
1770 wmv2_encoder_select="h263_encoder"
1771 wmv3_decoder_select="vc1_decoder"
1772 wmv3image_decoder_select="wmv3_decoder"
1773 zerocodec_decoder_select="zlib"
1774 zlib_decoder_select="zlib"
1775 zlib_encoder_select="zlib"
1776 zmbv_decoder_select="zlib"
1777 zmbv_encoder_select="zlib"
1778
1779 # hardware accelerators
1780 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1781 vaapi_deps="va_va_h"
1782 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1783 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1784
1785 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1786 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1787 h264_dxva2_hwaccel_deps="dxva2api_h"
1788 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1789 h264_vaapi_hwaccel_select="vaapi h264_decoder"
1790 h264_vda_decoder_select="vda h264_parser h264_decoder"
1791 h264_vda_hwaccel_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1792 h264_vda_hwaccel_select="vda h264_decoder"
1793 h264_vdpau_decoder_select="vdpau h264_decoder"
1794 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1795 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1796 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1797 mpeg2_crystalhd_decoder_select="crystalhd"
1798 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1799 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1800 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1801 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1802 mpeg4_crystalhd_decoder_select="crystalhd"
1803 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1804 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1805 msmpeg4_crystalhd_decoder_select="crystalhd"
1806 vc1_crystalhd_decoder_select="crystalhd"
1807 vc1_dxva2_hwaccel_deps="dxva2api_h"
1808 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1809 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1810 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1811 wmv3_crystalhd_decoder_select="crystalhd"
1812 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1813 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1814 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1815
1816 # parsers
1817 h264_parser_select="error_resilience golomb h264dsp h264pred mpegvideo"
1818 mpeg4video_parser_select="error_resilience mpegvideo"
1819 mpegvideo_parser_select="error_resilience mpegvideo"
1820 vc1_parser_select="error_resilience mpegvideo"
1821
1822 # external libraries
1823 libaacplus_encoder_deps="libaacplus"
1824 libcelt_decoder_deps="libcelt"
1825 libfaac_encoder_deps="libfaac"
1826 libfdk_aac_encoder_deps="libfdk_aac"
1827 libgsm_decoder_deps="libgsm"
1828 libgsm_encoder_deps="libgsm"
1829 libgsm_ms_decoder_deps="libgsm"
1830 libgsm_ms_encoder_deps="libgsm"
1831 libilbc_decoder_deps="libilbc"
1832 libilbc_encoder_deps="libilbc"
1833 libmodplug_demuxer_deps="libmodplug"
1834 libmp3lame_encoder_deps="libmp3lame"
1835 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1836 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1837 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1838 libopenjpeg_decoder_deps="libopenjpeg"
1839 libopenjpeg_encoder_deps="libopenjpeg"
1840 libopus_decoder_deps="libopus"
1841 libopus_encoder_deps="libopus"
1842 libschroedinger_decoder_deps="libschroedinger"
1843 libschroedinger_encoder_deps="libschroedinger"
1844 libspeex_decoder_deps="libspeex"
1845 libspeex_encoder_deps="libspeex"
1846 libstagefright_h264_decoder_deps="libstagefright_h264"
1847 libtheora_encoder_deps="libtheora"
1848 libtwolame_encoder_deps="libtwolame"
1849 libvo_aacenc_encoder_deps="libvo_aacenc"
1850 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1851 libvorbis_decoder_deps="libvorbis"
1852 libvorbis_encoder_deps="libvorbis"
1853 libvpx_decoder_deps="libvpx"
1854 libvpx_encoder_deps="libvpx"
1855 libx264_encoder_deps="libx264"
1856 libx264rgb_encoder_deps="libx264"
1857 libxavs_encoder_deps="libxavs"
1858 libxvid_encoder_deps="libxvid"
1859 libutvideo_decoder_deps="libutvideo"
1860 libutvideo_encoder_deps="libutvideo"
1861
1862 # demuxers / muxers
1863 ac3_demuxer_select="ac3_parser"
1864 asf_stream_muxer_select="asf_muxer"
1865 avisynth_demuxer_deps="avisynth"
1866 dirac_demuxer_select="dirac_parser"
1867 dts_demuxer_select="dca_parser"
1868 dtshd_demuxer_select="dca_parser"
1869 eac3_demuxer_select="ac3_parser"
1870 f4v_muxer_select="mov_muxer"
1871 flac_demuxer_select="flac_parser"
1872 ipod_muxer_select="mov_muxer"
1873 ismv_muxer_select="mov_muxer"
1874 libnut_demuxer_deps="libnut"
1875 libnut_muxer_deps="libnut"
1876 matroska_audio_muxer_select="matroska_muxer"
1877 matroska_demuxer_suggest="bzlib lzo zlib"
1878 mov_demuxer_suggest="zlib"
1879 mov_muxer_select="rtpenc_chain"
1880 mp3_demuxer_select="mpegaudio_parser"
1881 mp4_muxer_select="mov_muxer"
1882 mpegts_muxer_select="adts_muxer latm_muxer mpegvideo"
1883 mpegtsraw_demuxer_select="mpegts_demuxer"
1884 mxf_d10_muxer_select="mxf_muxer"
1885 ogg_demuxer_select="golomb"
1886 psp_muxer_select="mov_muxer"
1887 rtp_demuxer_select="sdp_demuxer"
1888 rtp_muxer_select="mpegvideo"
1889 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1890 rtsp_demuxer_select="http_protocol rtpdec"
1891 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1892 sap_demuxer_select="sdp_demuxer"
1893 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1894 sdp_demuxer_select="rtpdec"
1895 smoothstreaming_muxer_select="ismv_muxer"
1896 spdif_muxer_select="aac_parser"
1897 tak_demuxer_select="tak_parser"
1898 tg2_muxer_select="mov_muxer"
1899 tgp_muxer_select="mov_muxer"
1900 vobsub_demuxer_select="mpegps_demuxer"
1901 w64_demuxer_deps="wav_demuxer"
1902
1903 # indevs / outdevs
1904 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1905 alsa_outdev_deps="alsa_asoundlib_h"
1906 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1907 caca_outdev_deps="libcaca"
1908 dshow_indev_deps="IBaseFilter"
1909 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
1910 dv1394_indev_deps="dv1394 dv_demuxer"
1911 fbdev_indev_deps="linux_fb_h"
1912 iec61883_indev_deps="libiec61883"
1913 jack_indev_deps="jack_jack_h sem_timedwait"
1914 lavfi_indev_deps="avfilter"
1915 libcdio_indev_deps="libcdio"
1916 libdc1394_indev_deps="libdc1394"
1917 libv4l2_indev_deps="libv4l2"
1918 openal_indev_deps="openal"
1919 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1920 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1921 pulse_indev_deps="libpulse"
1922 sdl_outdev_deps="sdl"
1923 sndio_indev_deps="sndio_h"
1924 sndio_outdev_deps="sndio_h"
1925 v4l_indev_deps="linux_videodev_h"
1926 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1927 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1928 vfwcap_indev_extralibs="-lavicap32"
1929 x11grab_indev_deps="x11grab"
1930
1931 # protocols
1932 bluray_protocol_deps="libbluray"
1933 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1934 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1935 ffrtmpcrypt_protocol_select="tcp_protocol"
1936 ffrtmphttp_protocol_deps="!librtmp_protocol"
1937 ffrtmphttp_protocol_select="http_protocol"
1938 gopher_protocol_select="network"
1939 httpproxy_protocol_select="tcp_protocol"
1940 http_protocol_select="tcp_protocol"
1941 https_protocol_select="tls_protocol"
1942 librtmp_protocol_deps="librtmp"
1943 librtmpe_protocol_deps="librtmp"
1944 librtmps_protocol_deps="librtmp"
1945 librtmpt_protocol_deps="librtmp"
1946 librtmpte_protocol_deps="librtmp"
1947 mmsh_protocol_select="http_protocol"
1948 mmst_protocol_select="network"
1949 rtmp_protocol_deps="!librtmp_protocol"
1950 rtmp_protocol_select="tcp_protocol"
1951 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1952 rtmps_protocol_deps="!librtmp_protocol"
1953 rtmps_protocol_select="tls_protocol"
1954 rtmpt_protocol_select="ffrtmphttp_protocol"
1955 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1956 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1957 rtp_protocol_select="udp_protocol"
1958 sctp_protocol_deps="struct_sctp_event_subscribe"
1959 sctp_protocol_select="network"
1960 tcp_protocol_select="network"
1961 tls_protocol_deps_any="openssl gnutls"
1962 tls_protocol_select="tcp_protocol"
1963 udp_protocol_select="network"
1964
1965 # filters
1966 aconvert_filter_deps="swresample"
1967 amovie_filter_deps="avcodec avformat"
1968 aresample_filter_deps="swresample"
1969 ass_filter_deps="libass"
1970 asyncts_filter_deps="avresample"
1971 atempo_filter_deps="avcodec rdft"
1972 blackframe_filter_deps="gpl"
1973 boxblur_filter_deps="gpl"
1974 colormatrix_filter_deps="gpl"
1975 cropdetect_filter_deps="gpl"
1976 decimate_filter_deps="gpl avcodec"
1977 delogo_filter_deps="gpl"
1978 deshake_filter_deps="avcodec"
1979 drawtext_filter_deps="libfreetype"
1980 ebur128_filter_deps="gpl"
1981 flite_filter_deps="libflite"
1982 frei0r_filter_deps="frei0r dlopen"
1983 frei0r_filter_extralibs='$ldl'
1984 frei0r_src_filter_deps="frei0r dlopen"
1985 frei0r_src_filter_extralibs='$ldl'
1986 geq_filter_deps="gpl"
1987 hqdn3d_filter_deps="gpl"
1988 hue_filter_deps="gpl"
1989 movie_filter_deps="avcodec avformat"
1990 mp_filter_deps="gpl avcodec swscale inline_asm"
1991 mptestsrc_filter_deps="gpl"
1992 negate_filter_deps="lut_filter"
1993 resample_filter_deps="avresample"
1994 ocv_filter_deps="libopencv"
1995 pan_filter_deps="swresample"
1996 pp_filter_deps="gpl postproc"
1997 removelogo_filter_deps="avcodec avformat swscale"
1998 scale_filter_deps="swscale"
1999 smartblur_filter_deps="gpl swscale"
2000 showspectrum_filter_deps="avcodec rdft"
2001 subtitles_filter_deps="avformat avcodec libass"
2002 super2xsai_filter_deps="gpl"
2003 tinterlace_filter_deps="gpl"
2004 yadif_filter_deps="gpl"
2005 pixfmts_super2xsai_test_deps="super2xsai_filter"
2006 tinterlace_merge_test_deps="tinterlace_filter"
2007 tinterlace_pad_test_deps="tinterlace_filter"
2008
2009 # libraries
2010 avcodec_deps="avutil"
2011 avdevice_deps="avutil avcodec avformat"
2012 avfilter_deps="avutil"
2013 avformat_deps="avutil avcodec"
2014 avresample_deps="avutil"
2015 postproc_deps="avutil gpl"
2016 swscale_deps="avutil"
2017
2018 # programs
2019 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2020 ffmpeg_select="ffbuffersink_filter format_filter aformat_filter
2021                setpts_filter null_filter anull_filter ffabuffersink_filter"
2022 ffplay_deps="avcodec avformat swscale swresample sdl"
2023 ffplay_select="ffbuffersink_filter rdft crop_filter"
2024 ffprobe_deps="avcodec avformat"
2025 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2026 ffserver_extralibs='$ldl'
2027
2028 # documentation
2029 podpages_deps="perl"
2030 manpages_deps="perl pod2man"
2031 htmlpages_deps="texi2html"
2032 txtpages_deps="makeinfo"
2033 doc_deps_any="manpages htmlpages podpages txtpages"
2034
2035 # default parameters
2036
2037 logfile="config.log"
2038
2039 # installation paths
2040 prefix_default="/usr/local"
2041 bindir_default='${prefix}/bin'
2042 datadir_default='${prefix}/share/ffmpeg'
2043 incdir_default='${prefix}/include'
2044 libdir_default='${prefix}/lib'
2045 mandir_default='${prefix}/share/man'
2046 shlibdir_default="$libdir_default"
2047
2048 # toolchain
2049 ar_default="ar"
2050 cc_default="gcc"
2051 cxx_default="g++"
2052 host_cc_default="gcc"
2053 cp_f="cp -f"
2054 install="install"
2055 ln_s="ln -sf"
2056 nm_default="nm -g"
2057 objformat="elf"
2058 pkg_config_default=pkg-config
2059 ranlib="ranlib"
2060 strip_default="strip"
2061 yasmexe_default="yasm"
2062
2063 nogas=":"
2064
2065 # machine
2066 arch_default=$(uname -m)
2067 cpu="generic"
2068
2069 # OS
2070 target_os_default=$(tolower $(uname -s))
2071 host_os=$target_os_default
2072
2073 # configurable options
2074 enable $PROGRAM_LIST
2075 enable $DOCUMENT_LIST
2076 enable $(filter_out avresample $LIBRARY_LIST)
2077 enable stripping
2078
2079 enable asm
2080 enable debug
2081 enable doc
2082 enable optimizations
2083 enable runtime_cpudetect
2084 enable safe_bitstream_reader
2085 enable static
2086 enable swscale_alpha
2087
2088 # build settings
2089 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2090 FFSERVERLDFLAGS=-Wl,-E
2091 LIBPREF="lib"
2092 LIBSUF=".a"
2093 FULLNAME='$(NAME)$(BUILDSUF)'
2094 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2095 SLIBPREF="lib"
2096 SLIBSUF=".so"
2097 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2098 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2099 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2100 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2101 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2102 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2103
2104 asflags_filter=echo
2105 cflags_filter=echo
2106 ldflags_filter=echo
2107
2108 AS_C='-c'
2109 AS_O='-o $@'
2110 CC_C='-c'
2111 CC_E='-E -o $@'
2112 CC_O='-o $@'
2113 CXX_C='-c'
2114 CXX_O='-o $@'
2115 LD_O='-o $@'
2116 LD_LIB='-l%'
2117 LD_PATH='-L'
2118 HOSTCC_C='-c'
2119 HOSTCC_O='-o $@'
2120 HOSTLD_O='-o $@'
2121
2122 host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
2123 host_libs='-lm'
2124 host_cflags_filter=echo
2125 host_ldflags_filter=echo
2126
2127 target_path='$(CURDIR)'
2128
2129 # since the object filename is not given with the -MM flag, the compiler
2130 # is only able to print the basename, and we must add the path ourselves
2131 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2132 DEPFLAGS='-MM'
2133
2134 # find source path
2135 if test -f configure; then
2136     source_path=.
2137 else
2138     source_path=$(cd $(dirname "$0"); pwd)
2139     echo "$source_path" | grep -q '[[:blank:]]' &&
2140         die "Out of tree builds are impossible with whitespace in source path."
2141     test -e "$source_path/config.h" &&
2142         die "Out of tree builds are impossible with config.h in source dir."
2143 fi
2144
2145 for v in "$@"; do
2146     r=${v#*=}
2147     l=${v%"$r"}
2148     r=$(sh_quote "$r")
2149     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2150 done
2151
2152 find_things(){
2153     thing=$1
2154     pattern=$2
2155     file=$source_path/$3
2156     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2157 }
2158
2159 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2160 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2161 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2162 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2163 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2164 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2165 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2166 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2167 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2168 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2169 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2170
2171 ALL_COMPONENTS="
2172     $BSF_LIST
2173     $DECODER_LIST
2174     $DEMUXER_LIST
2175     $ENCODER_LIST
2176     $FILTER_LIST
2177     $HWACCEL_LIST
2178     $INDEV_LIST
2179     $MUXER_LIST
2180     $OUTDEV_LIST
2181     $PARSER_LIST
2182     $PROTOCOL_LIST
2183 "
2184
2185 for n in $COMPONENT_LIST; do
2186     v=$(toupper ${n%s})_LIST
2187     eval enable \$$v
2188     eval ${n}_if_any="\$$v"
2189 done
2190
2191 enable $ARCH_EXT_LIST
2192
2193 die_unknown(){
2194     echo "Unknown option \"$1\"."
2195     echo "See $0 --help for available options."
2196     exit 1
2197 }
2198
2199 show_list() {
2200     suffix=_$1
2201     shift
2202     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
2203     exit 0
2204 }
2205
2206 rand_list(){
2207     IFS=', '
2208     set -- $*
2209     unset IFS
2210     for thing; do
2211         comp=${thing%:*}
2212         prob=${thing#$comp}
2213         prob=${prob#:}
2214         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2215         echo "prob ${prob:-0.5}"
2216         printf '%s\n' $comp
2217     done
2218 }
2219
2220 do_random(){
2221     action=$1
2222     shift
2223     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2224     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2225 }
2226
2227 for opt do
2228     optval="${opt#*=}"
2229     case "$opt" in
2230         --extra-ldflags=*)
2231             add_ldflags $optval
2232         ;;
2233         --extra-libs=*)
2234             add_extralibs $optval
2235         ;;
2236         --disable-devices)
2237             disable $INDEV_LIST $OUTDEV_LIST
2238         ;;
2239         --enable-debug=*)
2240             debuglevel="$optval"
2241         ;;
2242         --disable-programs)
2243             disable $PROGRAM_LIST
2244         ;;
2245         --disable-everything)
2246             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2247         ;;
2248         --disable-all)
2249             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2250             disable $LIBRARY_LIST $PROGRAM_LIST doc
2251         ;;
2252         --enable-random|--disable-random)
2253             action=${opt%%-random}
2254             do_random ${action#--} $COMPONENT_LIST
2255         ;;
2256         --enable-random=*|--disable-random=*)
2257             action=${opt%%-random=*}
2258             do_random ${action#--} $optval
2259         ;;
2260         --enable-*=*|--disable-*=*)
2261             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2262             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2263             eval list=\$$(toupper $thing)_LIST
2264             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2265             list=$(filter "$name" $list)
2266             [ "$list" = "" ] && warn "Option $opt did not match anything"
2267             $action $list
2268         ;;
2269         --enable-?*|--disable-?*)
2270             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2271             if is_in $option $COMPONENT_LIST; then
2272                 test $action = disable && action=unset
2273                 eval $action \$$(toupper ${option%s})_LIST
2274             elif is_in $option $CMDLINE_SELECT; then
2275                 $action $option
2276             else
2277                 die_unknown $opt
2278             fi
2279         ;;
2280         --list-*)
2281             NAME="${opt#--list-}"
2282             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2283             NAME=${NAME%s}
2284             eval show_list $NAME \$$(toupper $NAME)_LIST
2285         ;;
2286         --help|-h) show_help
2287         ;;
2288         --fatal-warnings) enable fatal_warnings
2289         ;;
2290         *)
2291             optname="${opt%%=*}"
2292             optname="${optname#--}"
2293             optname=$(echo "$optname" | sed 's/-/_/g')
2294             if is_in $optname $CMDLINE_SET; then
2295                 eval $optname='$optval'
2296             elif is_in $optname $CMDLINE_APPEND; then
2297                 append $optname "$optval"
2298             else
2299                 die_unknown $opt
2300             fi
2301         ;;
2302     esac
2303 done
2304
2305 disabled logging && logfile=/dev/null
2306
2307 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2308 set >> $logfile
2309
2310 test -n "$cross_prefix" && enable cross_compile
2311
2312 if enabled cross_compile; then
2313     test -n "$arch" && test -n "$target_os" ||
2314         die "Must specify target arch and OS when cross-compiling"
2315 fi
2316
2317 ar_default="${cross_prefix}${ar_default}"
2318 cc_default="${cross_prefix}${cc_default}"
2319 cxx_default="${cross_prefix}${cxx_default}"
2320 nm_default="${cross_prefix}${nm_default}"
2321 pkg_config_default="${cross_prefix}${pkg_config_default}"
2322 ranlib="${cross_prefix}${ranlib}"
2323 strip_default="${cross_prefix}${strip_default}"
2324
2325 sysinclude_default="${sysroot}/usr/include"
2326
2327 case "$toolchain" in
2328     clang-asan)
2329         cc_default="clang"
2330         add_cflags  -faddress-sanitizer
2331         add_ldflags -faddress-sanitizer
2332     ;;
2333     clang-tsan)
2334         cc_default="clang"
2335         add_cflags  -fthread-sanitizer
2336         add_ldflags -fthread-sanitizer
2337     ;;
2338     msvc)
2339         cc_default="c99wrap cl"
2340         ld_default="c99wrap link"
2341         nm_default="dumpbin -symbols"
2342         ar_default="lib"
2343         target_os_default="win32"
2344     ;;
2345     ?*)
2346         die "Unknown toolchain $toolchain"
2347     ;;
2348 esac
2349
2350 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2351 enabled cross_compile || host_cc_default=$cc
2352 set_default host_cc
2353
2354 if ! $pkg_config --version >/dev/null 2>&1; then
2355     warn "$pkg_config not found, library detection may fail."
2356     pkg_config=false
2357 fi
2358
2359 exesuf() {
2360     case $1 in
2361         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2362     esac
2363 }
2364
2365 EXESUF=$(exesuf $target_os)
2366 HOSTEXESUF=$(exesuf $host_os)
2367
2368 # set temporary file name
2369 : ${TMPDIR:=$TEMPDIR}
2370 : ${TMPDIR:=$TMP}
2371 : ${TMPDIR:=/tmp}
2372
2373 if ! check_cmd mktemp -u XXXXXX; then
2374     # simple replacement for missing mktemp
2375     # NOT SAFE FOR GENERAL USE
2376     mktemp(){
2377         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2378     }
2379 fi
2380
2381 tmpfile(){
2382     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2383         (set -C; exec > $tmp) 2>/dev/null ||
2384         die "Unable to create temporary file in $TMPDIR."
2385     append TMPFILES $tmp
2386     eval $1=$tmp
2387 }
2388
2389 trap 'rm -f -- $TMPFILES' EXIT
2390
2391 tmpfile TMPASM .asm
2392 tmpfile TMPC   .c
2393 tmpfile TMPCPP .cpp
2394 tmpfile TMPE   $EXESUF
2395 tmpfile TMPH   .h
2396 tmpfile TMPO   .o
2397 tmpfile TMPS   .S
2398 tmpfile TMPSH  .sh
2399 tmpfile TMPV   .ver
2400
2401 unset -f mktemp
2402
2403 chmod +x $TMPE
2404
2405 # make sure we can execute files in $TMPDIR
2406 cat > $TMPSH 2>> $logfile <<EOF
2407 #! /bin/sh
2408 EOF
2409 chmod +x $TMPSH >> $logfile 2>&1
2410 if ! $TMPSH >> $logfile 2>&1; then
2411     cat <<EOF
2412 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2413 variable to another directory and make sure that it is not mounted noexec.
2414 EOF
2415     die "Sanity test failed."
2416 fi
2417
2418 ccc_flags(){
2419     for flag; do
2420         case $flag in
2421             -std=c99)           echo -c99                       ;;
2422             -mcpu=*)            echo -arch ${flag#*=}           ;;
2423             -mieee)             echo -ieee                      ;;
2424             -O*|-fast)          echo $flag                      ;;
2425             -fno-math-errno)    echo -assume nomath_errno       ;;
2426             -g)                 echo -g3                        ;;
2427             -Wall)              echo -msg_enable level2         ;;
2428             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2429             -Wl,*)              echo $flag                      ;;
2430             -f*|-W*)                                            ;;
2431             *)                  echo $flag                      ;;
2432         esac
2433    done
2434 }
2435
2436 msvc_flags(){
2437     for flag; do
2438         case $flag in
2439             -fomit-frame-pointer) echo -Oy ;;
2440             -g)                   echo -Z7 ;;
2441             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2442                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2443                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2444                                        -wd4554 \
2445                                        -wd4996 -wd4273 ;;
2446             -std=c99)             ;;
2447             -fno-math-errno)      ;;
2448             -fno-common)          ;;
2449             -fno-signed-zeros)    ;;
2450             -lz)                  echo zlib.lib ;;
2451             -lavifil32)           echo vfw32.lib ;;
2452             -lavicap32)           echo vfw32.lib user32.lib ;;
2453             -l*)                  echo ${flag#-l}.lib ;;
2454             *)                    echo $flag ;;
2455         esac
2456     done
2457 }
2458
2459 pgi_flags(){
2460     for flag; do
2461         case $flag in
2462             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2463             -fomit-frame-pointer) echo -Mnoframe ;;
2464             -g)                   echo -gopt ;;
2465             *)                    echo $flag ;;
2466         esac
2467     done
2468 }
2469
2470 suncc_flags(){
2471     for flag; do
2472         case $flag in
2473             -march=*|-mcpu=*)
2474                 case "${flag#*=}" in
2475                     native)                   echo -xtarget=native       ;;
2476                     v9|niagara)               echo -xarch=sparc          ;;
2477                     ultrasparc)               echo -xarch=sparcvis       ;;
2478                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2479                     i586|pentium)             echo -xchip=pentium        ;;
2480                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2481                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2482                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2483                     pentium4*)          echo -xtarget=pentium4           ;;
2484                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2485                     *-sse3)             echo -xarch=sse3                 ;;
2486                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2487                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2488                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2489                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2490                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2491                     k8|opteron|athlon64|athlon-fx)
2492                                               echo -xarch=sse2a          ;;
2493                     athlon*)                  echo -xarch=pentium_proa   ;;
2494                 esac
2495                 ;;
2496             -std=c99)             echo -xc99              ;;
2497             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2498             -fPIC)                echo -KPIC -xcode=pic32 ;;
2499             -W*,*)                echo $flag              ;;
2500             -f*-*|-W*)                                    ;;
2501             *)                    echo $flag              ;;
2502         esac
2503     done
2504 }
2505
2506 tms470_flags(){
2507     for flag; do
2508         case $flag in
2509             -march=*|-mcpu=*)
2510                 case "${flag#*=}" in
2511                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2512                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2513                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2514                     armv6*|arm11*)          echo -mv=6   ;;
2515                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2516                                             echo -mv=5e  ;;
2517                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2518                 esac
2519                 ;;
2520             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2521             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2522             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2523             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2524             -msoft-float)   echo --float_support=vfplib       ;;
2525             -O[0-3]|-mf=*)  echo $flag                        ;;
2526             -g)             echo -g -mn                       ;;
2527             -pds=*)         echo $flag                        ;;
2528             -D*|-I*)        echo $flag                        ;;
2529             --gcc|--abi=*)  echo $flag                        ;;
2530             -me)            echo $flag                        ;;
2531         esac
2532     done
2533 }
2534
2535 probe_cc(){
2536     pfx=$1
2537     _cc=$2
2538
2539     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2540     unset _ld_o _ldflags _ld_lib _ld_path
2541     unset _depflags _DEPCMD _DEPFLAGS
2542     _flags_filter=echo
2543
2544     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2545         _type=llvm_gcc
2546         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2547         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2548         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2549         _cflags_speed='-O3'
2550         _cflags_size='-Os'
2551     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2552         _type=gcc
2553         gcc_version=$($_cc --version | head -n1)
2554         gcc_basever=$($_cc -dumpversion)
2555         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2556         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2557         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2558         if ! $_cc -dumpversion | grep -q '^2\.'; then
2559             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2560         fi
2561         _cflags_speed='-O3'
2562         _cflags_size='-Os'
2563     elif $_cc --version 2>/dev/null | grep -q Intel; then
2564         _type=icc
2565         _ident=$($_cc --version | head -n1)
2566         _depflags='-MMD'
2567         _cflags_speed='-O3'
2568         _cflags_size='-Os'
2569         _cflags_noopt='-O1'
2570     elif $_cc -v 2>&1 | grep -q xlc; then
2571         _type=xlc
2572         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2573         _cflags_speed='-O5'
2574         _cflags_size='-O5 -qcompact'
2575     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2576         _type=ccc
2577         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2578         _DEPFLAGS='-M'
2579         _cflags_speed='-fast'
2580         _cflags_size='-O1'
2581         _flags_filter=ccc_flags
2582     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2583         test -d "$sysroot" || die "No valid sysroot specified."
2584         _type=armcc
2585         _ident=$($_cc --vsn | head -n1)
2586         armcc_conf="$PWD/armcc.conf"
2587         $_cc --arm_linux_configure                 \
2588              --arm_linux_config_file="$armcc_conf" \
2589              --configure_sysroot="$sysroot"        \
2590              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2591              die "Error creating armcc configuration file."
2592         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2593         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2594         as_default="${cross_prefix}gcc"
2595         _depflags='-MMD'
2596         _cflags_speed='-O3'
2597         _cflags_size='-Os'
2598     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2599         _type=tms470
2600         _ident=$($_cc -version | head -n1 | tr -s ' ')
2601         _flags='--gcc --abi=eabi -me'
2602         _cc_e='-ppl -fe=$@'
2603         _cc_o='-fe=$@'
2604         _depflags='-ppa -ppd=$(@:.o=.d)'
2605         _cflags_speed='-O3 -mf=5'
2606         _cflags_size='-O3 -mf=2'
2607         _flags_filter=tms470_flags
2608     elif $_cc -v 2>&1 | grep -q clang; then
2609         _type=clang
2610         _ident=$($_cc --version | head -n1)
2611         _depflags='-MMD'
2612         _cflags_speed='-O3'
2613         _cflags_size='-Os'
2614     elif $_cc -V 2>&1 | grep -q Sun; then
2615         _type=suncc
2616         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2617         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2618         _DEPFLAGS='-xM1 -xc99'
2619         _ldflags='-std=c99'
2620         _cflags_speed='-O5'
2621         _cflags_size='-O5 -xspace'
2622         _flags_filter=suncc_flags
2623     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2624         _type=pathscale
2625         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2626         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2627         _cflags_speed='-O2'
2628         _cflags_size='-Os'
2629         _flags_filter='filter_out -Wdisabled-optimization'
2630     elif $_cc -v 2>&1 | grep -q Open64; then
2631         _type=open64
2632         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2633         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2634         _cflags_speed='-O2'
2635         _cflags_size='-Os'
2636         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2637     elif $_cc -V 2>&1 | grep -q Portland; then
2638         _type=pgi
2639         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2640         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2641         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2642         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2643         _cflags_noopt="-O1"
2644         _flags_filter=pgi_flags
2645     elif $_cc 2>&1 | grep -q Microsoft; then
2646         _type=msvc
2647         _ident=$($cc 2>&1 | head -n1)
2648         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2649         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2650         _cflags_speed="-O2"
2651         _cflags_size="-O1"
2652         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2653         if $_cc 2>&1 | grep -q Linker; then
2654             _ld_o='-out $@'
2655         else
2656             _ld_o='-Fe$@'
2657         fi
2658         _cc_o='-Fo $@'
2659         _cc_e='-P -Fi $@'
2660         _flags_filter=msvc_flags
2661         _ld_lib='lib%.a'
2662         _ld_path='-libpath:'
2663         _flags='-nologo'
2664         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2665         if [ $pfx = hostcc ]; then
2666             append _cflags -Dsnprintf=_snprintf
2667         fi
2668         disable stripping
2669     fi
2670
2671     eval ${pfx}_type=\$_type
2672     eval ${pfx}_ident=\$_ident
2673 }
2674
2675 set_ccvars(){
2676     eval ${1}_C=\${_cc_c-\${${1}_C}}
2677     eval ${1}_E=\${_cc_e-\${${1}_E}}
2678     eval ${1}_O=\${_cc_o-\${${1}_O}}
2679
2680     if [ -n "$_depflags" ]; then
2681         eval ${1}_DEPFLAGS=\$_depflags
2682     else
2683         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2684         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2685         eval DEP${1}FLAGS=\$_flags
2686     fi
2687 }
2688
2689 probe_cc cc "$cc"
2690 cflags_filter=$_flags_filter
2691 cflags_speed=$_cflags_speed
2692 cflags_size=$_cflags_size
2693 cflags_noopt=$_cflags_noopt
2694 add_cflags $_flags $_cflags
2695 cc_ldflags=$_ldflags
2696 set_ccvars CC
2697
2698 probe_cc hostcc "$host_cc"
2699 host_cflags_filter=$_flags_filter
2700 add_host_cflags  $_flags $_cflags
2701 set_ccvars HOSTCC
2702
2703 test -n "$cc_type" && enable $cc_type ||
2704     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2705
2706 : ${as_default:=$cc}
2707 : ${dep_cc_default:=$cc}
2708 : ${ld_default:=$cc}
2709 : ${host_ld_default:=$host_cc}
2710 set_default ar as dep_cc ld host_ld
2711
2712 probe_cc as "$as"
2713 asflags_filter=$_flags_filter
2714 add_asflags $_flags $_cflags
2715 set_ccvars AS
2716
2717 probe_cc ld "$ld"
2718 ldflags_filter=$_flags_filter
2719 add_ldflags $_flags $_ldflags
2720 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2721 LD_O=${_ld_o-$LD_O}
2722 LD_LIB=${_ld_lib-$LD_LIB}
2723 LD_PATH=${_ld_path-$LD_PATH}
2724
2725 probe_cc hostld "$host_ld"
2726 host_ldflags_filter=$_flags_filter
2727 add_host_ldflags $_flags $_ldflags
2728 HOSTLD_O=${_ld_o-$HOSTLD_O}
2729
2730 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2731     probe_cc depcc "$dep_cc"
2732     CCDEP=${_DEPCMD:-$DEPCMD}
2733     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2734     DEPCCFLAGS=$_flags
2735 fi
2736
2737 if $ar 2>&1 | grep -q Microsoft; then
2738     arflags="-nologo"
2739     ar_o='-out:$@'
2740 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2741     arflags="rq"
2742     ar_o='$@'
2743 else
2744     arflags="rc"
2745     ar_o='$@'
2746 fi
2747
2748 add_cflags $extra_cflags
2749 add_cxxflags $extra_cxxflags
2750 add_asflags $extra_cflags
2751
2752 if test -n "$sysroot"; then
2753     case "$cc_type" in
2754         gcc|llvm_gcc|clang)
2755             add_cppflags --sysroot="$sysroot"
2756             add_ldflags --sysroot="$sysroot"
2757         ;;
2758         tms470)
2759             add_cppflags -I"$sysinclude"
2760             add_ldflags  --sysroot="$sysroot"
2761         ;;
2762     esac
2763 fi
2764
2765 if test "$cpu" = host; then
2766     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2767
2768     case "$cc_type" in
2769         gcc|llvm_gcc)
2770             check_native(){
2771                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2772                 sed -n "/cc1.*$1=/{
2773                             s/.*$1=\\([^ ]*\\).*/\\1/
2774                             p
2775                             q
2776                         }" $TMPE
2777             }
2778             cpu=$(check_native -march || check_native -mcpu)
2779         ;;
2780     esac
2781
2782     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2783 fi
2784
2785 # Deal with common $arch aliases
2786 case "$arch" in
2787     aarch64|arm64)
2788         arch="aarch64"
2789     ;;
2790     arm*|iPad*)
2791         arch="arm"
2792     ;;
2793     mips*|IP*)
2794         arch="mips"
2795     ;;
2796     parisc*|hppa*)
2797         arch="parisc"
2798     ;;
2799     "Power Macintosh"|ppc*|powerpc*)
2800         arch="ppc"
2801     ;;
2802     s390|s390x)
2803         arch="s390"
2804     ;;
2805     sh4|sh)
2806         arch="sh4"
2807     ;;
2808     sun4u|sparc*)
2809         arch="sparc"
2810     ;;
2811     tilegx|tile-gx)
2812         arch="tilegx"
2813     ;;
2814     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2815         arch="x86"
2816     ;;
2817 esac
2818
2819 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2820 enable $arch
2821
2822 # Add processor-specific flags
2823 if enabled aarch64; then
2824
2825     case $cpu in
2826         armv*)
2827             cpuflags="-march=$cpu"
2828         ;;
2829         *)
2830             cpuflags="-mcpu=$cpu"
2831         ;;
2832     esac
2833
2834 elif enabled alpha; then
2835
2836     cpuflags="-mcpu=$cpu"
2837
2838 elif enabled arm; then
2839
2840     check_arm_arch() {
2841         check_cpp_condition stddef.h \
2842             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2843             $cpuflags
2844     }
2845
2846     probe_arm_arch() {
2847         if   check_arm_arch 4;        then echo armv4;
2848         elif check_arm_arch 4T;       then echo armv4t;
2849         elif check_arm_arch 5;        then echo armv5;
2850         elif check_arm_arch 5E;       then echo armv5e;
2851         elif check_arm_arch 5T;       then echo armv5t;
2852         elif check_arm_arch 5TE;      then echo armv5te;
2853         elif check_arm_arch 5TEJ;     then echo armv5te;
2854         elif check_arm_arch 6;        then echo armv6;
2855         elif check_arm_arch 6J;       then echo armv6j;
2856         elif check_arm_arch 6K;       then echo armv6k;
2857         elif check_arm_arch 6Z;       then echo armv6z;
2858         elif check_arm_arch 6ZK;      then echo armv6zk;
2859         elif check_arm_arch 6T2;      then echo armv6t2;
2860         elif check_arm_arch 7;        then echo armv7;
2861         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2862         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2863         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2864         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2865         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2866         fi
2867     }
2868
2869     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2870
2871     case $cpu in
2872         armv*)
2873             cpuflags="-march=$cpu"
2874             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2875         ;;
2876         *)
2877             cpuflags="-mcpu=$cpu"
2878             case $cpu in
2879                 cortex-a*)                               subarch=armv7a  ;;
2880                 cortex-r*)                               subarch=armv7r  ;;
2881                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2882                 arm11*)                                  subarch=armv6   ;;
2883                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2884                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2885                 *)                             subarch=$(probe_arm_arch) ;;
2886             esac
2887         ;;
2888     esac
2889
2890     case "$subarch" in
2891         armv5t*)    enable fast_clz                ;;
2892         armv[6-8]*) enable fast_clz fast_unaligned ;;
2893     esac
2894
2895 elif enabled avr32; then
2896
2897     case $cpu in
2898         ap7[02]0[0-2])
2899             subarch="avr32_ap"
2900             cpuflags="-mpart=$cpu"
2901         ;;
2902         ap)
2903             subarch="avr32_ap"
2904             cpuflags="-march=$cpu"
2905         ;;
2906         uc3[ab]*)
2907             subarch="avr32_uc"
2908             cpuflags="-mcpu=$cpu"
2909         ;;
2910         uc)
2911             subarch="avr32_uc"
2912             cpuflags="-march=$cpu"
2913         ;;
2914     esac
2915
2916 elif enabled bfin; then
2917
2918     cpuflags="-mcpu=$cpu"
2919
2920 elif enabled mips; then
2921
2922     cpuflags="-march=$cpu"
2923
2924     case $cpu in
2925         24kc)
2926             disable mipsfpu
2927             disable mipsdspr1
2928             disable mipsdspr2
2929         ;;
2930         24kf*)
2931             disable mipsdspr1
2932             disable mipsdspr2
2933         ;;
2934         24kec|34kc|1004kc)
2935             disable mipsfpu
2936             disable mipsdspr2
2937         ;;
2938         24kef*|34kf*|1004kf*)
2939             disable mipsdspr2
2940         ;;
2941         74kc)
2942             disable mipsfpu
2943         ;;
2944     esac
2945
2946 elif enabled ppc; then
2947
2948     case $(tolower $cpu) in
2949         601|ppc601|powerpc601)
2950             cpuflags="-mcpu=601"
2951             disable altivec
2952         ;;
2953         603*|ppc603*|powerpc603*)
2954             cpuflags="-mcpu=603"
2955             disable altivec
2956         ;;
2957         604*|ppc604*|powerpc604*)
2958             cpuflags="-mcpu=604"
2959             disable altivec
2960         ;;
2961         g3|75*|ppc75*|powerpc75*)
2962             cpuflags="-mcpu=750"
2963             disable altivec
2964         ;;
2965         g4|745*|ppc745*|powerpc745*)
2966             cpuflags="-mcpu=7450"
2967         ;;
2968         74*|ppc74*|powerpc74*)
2969             cpuflags="-mcpu=7400"
2970         ;;
2971         g5|970|ppc970|powerpc970)
2972             cpuflags="-mcpu=970"
2973         ;;
2974         power[3-7]*)
2975             cpuflags="-mcpu=$cpu"
2976         ;;
2977         cell)
2978             cpuflags="-mcpu=cell"
2979             enable ldbrx
2980         ;;
2981         e500mc)
2982             cpuflags="-mcpu=e500mc"
2983             disable altivec
2984         ;;
2985         e500v2)
2986             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2987             disable altivec
2988         ;;
2989         e500)
2990             cpuflags="-mcpu=8540 -mhard-float"
2991             disable altivec
2992         ;;
2993     esac
2994
2995 elif enabled sparc; then
2996
2997     case $cpu in
2998         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2999             cpuflags="-mcpu=$cpu"
3000             disable vis
3001         ;;
3002         ultrasparc*|niagara[234])
3003             cpuflags="-mcpu=$cpu"
3004         ;;
3005     esac
3006
3007 elif enabled x86; then
3008
3009     case $cpu in
3010         i[345]86|pentium)
3011             cpuflags="-march=$cpu"
3012             disable mmx
3013         ;;
3014         # targets that do NOT support conditional mov (cmov)
3015         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3016             cpuflags="-march=$cpu"
3017             disable cmov
3018         ;;
3019         # targets that do support conditional mov (cmov)
3020         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3021             cpuflags="-march=$cpu"
3022             enable cmov
3023             enable fast_cmov
3024         ;;
3025         # targets that do support conditional mov but on which it's slow
3026         pentium4|pentium4m|prescott|nocona)
3027             cpuflags="-march=$cpu"
3028             enable cmov
3029             disable fast_cmov
3030         ;;
3031     esac
3032
3033 fi
3034
3035 if [ "$cpu" != generic ]; then
3036     add_cflags  $cpuflags
3037     add_asflags $cpuflags
3038 fi
3039
3040 # compiler sanity check
3041 check_exec <<EOF
3042 int main(void){ return 0; }
3043 EOF
3044 if test "$?" != 0; then
3045     echo "$cc is unable to create an executable file."
3046     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3047         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3048         echo "Only do this if you know what cross compiling means."
3049     fi
3050     die "C compiler test failed."
3051 fi
3052
3053 add_cppflags -D_ISOC99_SOURCE
3054 add_cxxflags -D__STDC_CONSTANT_MACROS
3055 check_cflags -std=c99
3056 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3057 #include <stdlib.h>
3058 EOF
3059 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3060 #include <stdlib.h>
3061 EOF
3062
3063 check_host_cflags -std=c99
3064 check_host_cflags -Wall
3065
3066 check_64bit(){
3067     arch32=$1
3068     arch64=$2
3069     expr=$3
3070     check_code cc "" "int test[2*($expr) - 1]" &&
3071         subarch=$arch64 || subarch=$arch32
3072 }
3073
3074 case "$arch" in
3075     alpha|ia64)
3076         spic=$shared
3077     ;;
3078     mips)
3079         check_64bit mips mips64 '_MIPS_SIM > 1'
3080         spic=$shared
3081     ;;
3082     parisc)
3083         check_64bit parisc parisc64 'sizeof(void *) > 4'
3084         spic=$shared
3085     ;;
3086     ppc)
3087         check_64bit ppc ppc64 'sizeof(void *) > 4'
3088         spic=$shared
3089     ;;
3090     sparc)
3091         check_64bit sparc sparc64 'sizeof(void *) > 4'
3092         spic=$shared
3093     ;;
3094     x86)
3095         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3096         if test "$subarch" = "x86_64"; then
3097             spic=$shared
3098         fi
3099     ;;
3100     ppc)
3101         check_cc <<EOF && subarch="ppc64"
3102         int test[(int)sizeof(char*) - 7];
3103 EOF
3104     ;;
3105 esac
3106
3107 enable $subarch
3108 enabled spic && enable pic
3109
3110 # OS specific
3111 case $target_os in
3112     haiku)
3113         prefix_default="/boot/common"
3114         network_extralibs="-lnetwork"
3115         host_libs=
3116         ;;
3117     sunos)
3118         FFSERVERLDFLAGS=""
3119         SHFLAGS='-shared -Wl,-h,$$(@F)'
3120         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3121         network_extralibs="-lsocket -lnsl"
3122         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3123         # When using suncc to build, the Solaris linker will mark
3124         # an executable with each instruction set encountered by
3125         # the Solaris assembler.  As our libraries contain their own
3126         # guards for processor-specific code, instead suppress
3127         # generation of the HWCAPS ELF section on Solaris x86 only.
3128         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3129         nm_default='nm -P -g'
3130         ;;
3131     netbsd)
3132         disable symver
3133         oss_indev_extralibs="-lossaudio"
3134         oss_outdev_extralibs="-lossaudio"
3135         enabled gcc || check_ldflags -Wl,-zmuldefs
3136         ;;
3137     openbsd|bitrig)
3138         # On OpenBSD 4.5. the compiler does not use PIC unless
3139         # explicitly using -fPIC. FFmpeg builds fine without PIC,
3140         # however the generated executable will not do anything
3141         # (simply quits with exit-code 1, no crash, no output).
3142         # Thus explicitly enable PIC here.
3143         enable pic
3144         disable symver
3145         SHFLAGS='-shared'
3146         SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBVERSION)'
3147         SLIB_INSTALL_LINKS=
3148         oss_indev_extralibs="-lossaudio"
3149         oss_outdev_extralibs="-lossaudio"
3150         ;;
3151     dragonfly)
3152         disable symver
3153         ;;
3154     freebsd)
3155         ;;
3156     bsd/os)
3157         add_extralibs -lpoll -lgnugetopt
3158         strip="strip -d"
3159         ;;
3160     darwin)
3161         gas="gas-preprocessor.pl $cc"
3162         enabled ppc && add_asflags -force_cpusubtype_ALL
3163         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3164         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3165         strip="${strip} -x"
3166         add_ldflags -Wl,-dynamic,-search_paths_first
3167         SLIBSUF=".dylib"
3168         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3169         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3170         FFSERVERLDFLAGS=-Wl,-bind_at_load
3171         objformat="macho"
3172         enabled x86_64 && objformat="macho64"
3173         enabled_any pic shared ||
3174             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3175         ;;
3176     mingw32*)
3177         if test $target_os = "mingw32ce"; then
3178             disable network
3179         else
3180             target_os=mingw32
3181         fi
3182         LIBTARGET=i386
3183         if enabled x86_64; then
3184             LIBTARGET="i386:x86-64"
3185         elif enabled arm; then
3186             LIBTARGET=arm-wince
3187         fi
3188         shlibdir_default="$bindir_default"
3189         SLIBPREF=""
3190         SLIBSUF=".dll"
3191         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3192         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3193         dlltool="${cross_prefix}dlltool"
3194         if check_cmd lib.exe -list; then
3195             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3196             if enabled x86_64; then
3197                 LIBTARGET=x64
3198             fi
3199         elif check_cmd $dlltool --version; then
3200             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3201         fi
3202         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3203         SLIB_INSTALL_LINKS=
3204         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3205         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3206         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3207         objformat="win32"
3208         ranlib=:
3209         enable dos_paths
3210         add_cppflags -U__STRICT_ANSI__
3211         ;;
3212     win32|win64)
3213         if enabled shared; then
3214             # Link to the import library instead of the normal static library
3215             # for shared libs.
3216             LD_LIB='%.lib'
3217             # Cannot build shared and static libraries at the same time with
3218             # MSVC.
3219             disable static
3220         fi
3221         shlibdir_default="$bindir_default"
3222         SLIBPREF=""
3223         SLIBSUF=".dll"
3224         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3225         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3226         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3227         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3228         SLIB_INSTALL_LINKS=
3229         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3230         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3231         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3232         objformat="win32"
3233         ranlib=:
3234         enable dos_paths
3235         ;;
3236     cygwin*)
3237         target_os=cygwin
3238         shlibdir_default="$bindir_default"
3239         SLIBPREF="cyg"
3240         SLIBSUF=".dll"
3241         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3242         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3243         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3244         SLIB_INSTALL_LINKS=
3245         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3246         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3247         objformat="win32"
3248         enable dos_paths
3249         ;;
3250     *-dos|freedos|opendos)
3251         network_extralibs="-lsocket"
3252         objformat="coff"
3253         enable dos_paths
3254         add_cppflags -U__STRICT_ANSI__
3255         ;;
3256     linux)
3257         enable dv1394
3258         ;;
3259     irix*)
3260         target_os=irix
3261         ranlib="echo ignoring ranlib"
3262         ;;
3263     os/2*)
3264         strip="lxlite -CS"
3265         ln_s="cp -f"
3266         objformat="aout"
3267         add_cppflags -D_GNU_SOURCE
3268         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3269         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3270         FFSERVERLDFLAGS=""
3271         LIBSUF="_s.a"
3272         SLIBPREF=""
3273         SLIBSUF=".dll"
3274         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3275         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3276         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3277             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3278             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3279             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3280             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3281             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3282         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3283             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3284         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3285         enable dos_paths
3286         enable_weak os2threads
3287         ;;
3288     gnu/kfreebsd)
3289         add_cppflags -D_BSD_SOURCE
3290         ;;
3291     gnu)
3292         ;;
3293     qnx)
3294         add_cppflags -D_QNX_SOURCE
3295         network_extralibs="-lsocket"
3296         ;;
3297     symbian)
3298         SLIBSUF=".dll"
3299         enable dos_paths
3300         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3301         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3302         add_ldflags -Wl,--target1-abs,--no-undefined \
3303                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3304                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3305         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3306                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3307                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3308         ;;
3309     osf1)
3310         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3311         FFSERVERLDFLAGS=
3312         ;;
3313     minix)
3314         ;;
3315     plan9)
3316         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3317                      -D_REENTRANT_SOURCE        \
3318                      -D_RESEARCH_SOURCE         \
3319                      -DFD_SETSIZE=96            \
3320                      -DHAVE_SOCK_OPTS
3321         add_compat strtod.o strtod=avpriv_strtod
3322         network_extralibs='-lbsd'
3323         exeobjs=compat/plan9/main.o
3324         disable ffserver
3325         ln_s='ln -s -f'
3326         cp_f='cp'
3327         ;;
3328     none)
3329         ;;
3330     *)
3331         die "Unknown OS '$target_os'."
3332         ;;
3333 esac
3334
3335 # determine libc flavour
3336
3337 if check_cpp_condition features.h "defined __UCLIBC__"; then
3338     libc_type=uclibc
3339     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3340 elif check_cpp_condition features.h "defined __GLIBC__"; then
3341     libc_type=glibc
3342     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3343 elif check_header _mingw.h; then
3344     libc_type=mingw
3345     check_cpp_condition _mingw.h \
3346         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3347             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3348         die "ERROR: MinGW runtime version must be >= 3.15."
3349     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3350             __MINGW64_VERSION_MAJOR < 3"; then
3351         add_compat msvcrt/snprintf.o
3352         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3353     fi
3354 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3355     libc_type=newlib
3356     add_cppflags -U__STRICT_ANSI__
3357 elif check_func_headers stdlib.h _get_doserrno; then
3358     libc_type=msvcrt
3359     add_compat strtod.o strtod=avpriv_strtod
3360     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3361                                  _snprintf=avpriv_snprintf  \
3362                                  vsnprintf=avpriv_vsnprintf
3363 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3364     libc_type=klibc
3365 fi
3366
3367 test -n "$libc_type" && enable $libc_type
3368
3369 # hacks for compiler/libc/os combinations
3370
3371 if enabled_all tms470 glibc; then
3372     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3373     add_cppflags -D__USER_LABEL_PREFIX__=
3374     add_cppflags -D__builtin_memset=memset
3375     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3376     add_cflags   -pds=48    # incompatible redefinition of macro
3377 fi
3378
3379 if enabled_all ccc glibc; then
3380     add_ldflags -Wl,-z,now  # calls to libots crash without this
3381 fi
3382
3383 esc(){
3384     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3385 }
3386
3387 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3388
3389 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3390
3391 set_default $PATHS_LIST
3392 set_default nm
3393
3394 # we need to build at least one lib type
3395 if ! enabled_any static shared; then
3396     cat <<EOF
3397 At least one library type must be built.
3398 Specify --enable-static to build the static libraries or --enable-shared to
3399 build the shared libraries as well. To only build the shared libraries specify
3400 --disable-static in addition to --enable-shared.
3401 EOF
3402     exit 1;
3403 fi
3404
3405 die_license_disabled() {
3406     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3407 }
3408
3409 die_license_disabled_gpl() {
3410     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3411 }
3412
3413 die_license_disabled gpl libcdio
3414 die_license_disabled gpl libutvideo
3415 die_license_disabled gpl libx264
3416 die_license_disabled gpl libxavs
3417 die_license_disabled gpl libxvid
3418 die_license_disabled gpl x11grab
3419
3420 die_license_disabled nonfree libaacplus
3421 die_license_disabled nonfree libfaac
3422 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3423 enabled gpl && die_license_disabled_gpl nonfree openssl
3424
3425 die_license_disabled version3 libopencore_amrnb
3426 die_license_disabled version3 libopencore_amrwb
3427 die_license_disabled version3 libvo_aacenc
3428 die_license_disabled version3 libvo_amrwbenc
3429
3430 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3431
3432 disabled optimizations || check_cflags -fomit-frame-pointer
3433
3434 enable_pic() {
3435     enable pic
3436     add_cppflags -DPIC
3437     add_cflags   -fPIC
3438     add_asflags  -fPIC
3439 }
3440
3441 enabled pic && enable_pic
3442
3443 check_cc <<EOF || die "Symbol mangling check failed."
3444 int ff_extern;
3445 EOF
3446 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3447 extern_prefix=${sym%%ff_extern*}
3448
3449 check_cc <<EOF && enable_weak inline_asm
3450 void foo(void) { __asm__ volatile ("" ::); }
3451 EOF
3452
3453 _restrict=
3454 for restrict_keyword in restrict __restrict__ __restrict; do
3455     check_cc <<EOF && _restrict=$restrict_keyword && break
3456 void foo(char * $restrict_keyword p);
3457 EOF
3458 done
3459
3460 check_cc <<EOF && enable attribute_packed
3461 struct { int x; } __attribute__((packed)) x;
3462 EOF
3463
3464 check_cc <<EOF && enable attribute_may_alias
3465 union { int x; } __attribute__((may_alias)) x;
3466 EOF
3467
3468 check_cc <<EOF || die "endian test failed"
3469 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3470 EOF
3471 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3472
3473 if enabled alpha; then
3474
3475     check_cflags -mieee
3476
3477 elif enabled arm; then
3478
3479     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3480 float func(float a, float b){ return a+b; }
3481 EOF
3482
3483     enabled thumb && check_cflags -mthumb || check_cflags -marm
3484     nogas=die
3485
3486     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3487         enable vfp_args
3488     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3489         case "${cross_prefix:-$cc}" in
3490             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3491             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3492 __asm__ (".eabi_attribute 28, 1");
3493 int main(void) { return 0; }
3494 EOF
3495         esac
3496         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3497     fi
3498
3499     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3500     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3501     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3502     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3503     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3504     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3505
3506     [ $target_os = linux ] ||
3507         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3508             $ARCH_EXT_LIST_ARM
3509
3510     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3511     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3512
3513     enabled_all armv6t2 shared !pic && enable_pic
3514
3515 elif enabled mips; then
3516
3517     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3518     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3519      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3520     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3521      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3522     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3523      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3524     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3525      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3526
3527 elif enabled parisc; then
3528
3529     if enabled gcc; then
3530         case $($cc -dumpversion) in
3531             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3532         esac
3533     fi
3534
3535 elif enabled ppc; then
3536
3537     enable local_aligned_8 local_aligned_16
3538
3539     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3540     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3541     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3542     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3543
3544     # AltiVec flags: The FSF version of GCC differs from the Apple version
3545     if enabled altivec; then
3546         nogas=warn
3547         check_cflags -maltivec -mabi=altivec &&
3548         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3549         check_cflags -faltivec
3550
3551         # check if our compiler supports Motorola AltiVec C API
3552         check_cc <<EOF || disable altivec
3553 $inc_altivec_h
3554 int main(void) {
3555     vector signed int v1 = (vector signed int) { 0 };
3556     vector signed int v2 = (vector signed int) { 1 };
3557     v1 = vec_add(v1, v2);
3558     return 0;
3559 }
3560 EOF
3561
3562         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3563     fi
3564
3565 elif enabled sparc; then
3566
3567     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3568
3569 elif enabled x86; then
3570
3571     check_code ld intrin.h "__rdtsc()" "cc" && enable rdtsc
3572
3573     check_code ld mmintrin.h "_mm_empty()" "cc" && enable mm_empty
3574
3575     enable local_aligned_8 local_aligned_16
3576
3577     # check whether EBP is available on x86
3578     # As 'i' is stored on the stack, this program will crash
3579     # if the base pointer is used to access it because the
3580     # base pointer is cleared in the inline assembly code.
3581     check_exec_crash <<EOF && enable ebp_available
3582 volatile int i=0;
3583 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3584 return i;
3585 EOF
3586
3587     # check whether EBX is available on x86
3588     check_inline_asm ebx_available '""::"b"(0)' &&
3589         check_inline_asm ebx_available '"":::"%ebx"'
3590
3591     # check whether xmm clobbers are supported
3592     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3593
3594     # check whether binutils is new enough to compile SSSE3/MMXEXT
3595     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3596     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3597
3598     if ! disabled_any asm mmx yasm; then
3599         if check_cmd $yasmexe --version; then
3600             enabled x86_64 && yasm_extra="-m amd64"
3601             yasm_debug="-g dwarf2"
3602         elif check_cmd nasm -v; then
3603             yasmexe=nasm
3604             yasm_debug="-g -F dwarf"
3605             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3606         fi
3607
3608         YASMFLAGS="-f $objformat $yasm_extra"
3609         enabled pic               && append YASMFLAGS "-DPIC"
3610         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3611         case "$objformat" in
3612             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3613         esac
3614
3615         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3616             die "yasm not found, use --disable-yasm for a crippled build"
3617         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3618         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3619         check_yasm "CPU amdnop" && enable cpunop
3620     fi
3621
3622     case "$cpu" in
3623         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3624             disable fast_clz
3625         ;;
3626     esac
3627
3628 fi
3629
3630 if enabled asm; then
3631     as=${gas:=$as}
3632     check_as <<EOF && enable gnu_as || \
3633         $nogas "GNU assembler not found, install gas-preprocessor"
3634 .macro m n
3635 \n: .int 0
3636 .endm
3637 m x
3638 EOF
3639 fi
3640
3641 check_ldflags -Wl,--as-needed
3642
3643 if check_func dlopen; then
3644     ldl=
3645 elif check_func dlopen -ldl; then
3646     ldl=-ldl
3647 fi
3648
3649 if ! disabled network; then
3650     check_type "sys/types.h sys/socket.h" socklen_t
3651     check_type netdb.h "struct addrinfo"
3652     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3653     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3654     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3655     check_type netinet/in.h "struct sockaddr_in6"
3656     check_type poll.h "struct pollfd"
3657     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3658     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3659     check_type netinet/sctp.h "struct sctp_event_subscribe"
3660     check_func getaddrinfo $network_extralibs
3661     check_func getservbyport $network_extralibs
3662     # Prefer arpa/inet.h over winsock2
3663     if check_header arpa/inet.h ; then
3664         check_func closesocket
3665     elif check_header winsock2.h ; then
3666         check_func_headers winsock2.h closesocket -lws2 &&
3667             network_extralibs="-lws2" ||
3668         { check_func_headers winsock2.h closesocket -lws2_32 &&
3669             network_extralibs="-lws2_32"; }
3670         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3671         check_type ws2tcpip.h socklen_t
3672         check_type ws2tcpip.h "struct addrinfo"
3673         check_type ws2tcpip.h "struct group_source_req"
3674         check_type ws2tcpip.h "struct ip_mreq_source"
3675         check_type ws2tcpip.h "struct ipv6_mreq"
3676         check_type winsock2.h "struct pollfd"
3677         check_type ws2tcpip.h "struct sockaddr_in6"
3678         check_type ws2tcpip.h "struct sockaddr_storage"
3679         check_struct winsock2.h "struct sockaddr" sa_len
3680     else
3681         disable network
3682     fi
3683 fi
3684
3685 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3686 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3687
3688 check_func  access
3689 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3690 check_func  fcntl
3691 check_func  fork
3692 check_func  gethrtime
3693 check_func  getopt
3694 check_func  getrusage
3695 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3696 check_func  gettimeofday
3697 check_func  inet_aton $network_extralibs
3698 check_func  isatty
3699 check_func  localtime_r
3700 check_func  ${malloc_prefix}memalign            && enable memalign
3701 check_func  mkstemp
3702 check_func  mmap
3703 check_func  mprotect
3704 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3705 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3706 check_func  setrlimit
3707 check_func  strerror_r
3708 check_func  sched_getaffinity
3709 check_func  sysconf
3710 check_func  sysctl
3711 check_func  usleep
3712 check_func_headers conio.h kbhit
3713 check_func_headers windows.h PeekNamedPipe
3714 check_func_headers io.h setmode
3715 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3716 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3717 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3718 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3719 check_func_headers windows.h GetProcessAffinityMask
3720 check_func_headers windows.h GetProcessTimes
3721 check_func_headers windows.h GetSystemTimeAsFileTime
3722 check_func_headers windows.h MapViewOfFile
3723 check_func_headers windows.h SetConsoleTextAttribute
3724 check_func_headers windows.h Sleep
3725 check_func_headers windows.h VirtualAlloc
3726 check_func_headers glob.h glob
3727
3728 check_header direct.h
3729 check_header dlfcn.h
3730 check_header dxva.h
3731 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3732 check_header io.h
3733 check_header libcrystalhd/libcrystalhd_if.h
3734 check_header malloc.h
3735 check_header poll.h
3736 check_header sys/mman.h
3737 check_header sys/param.h
3738 check_header sys/resource.h
3739 check_header sys/select.h
3740 check_header sys/time.h
3741 check_header termios.h
3742 check_header unistd.h
3743 check_header vdpau/vdpau.h
3744 check_header vdpau/vdpau_x11.h
3745 check_header windows.h
3746 check_header X11/extensions/XvMClib.h
3747 check_header asm/types.h
3748
3749 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3750 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3751
3752 # check for VDA header
3753 if ! disabled vda && ! enabled ppc; then
3754     if check_header VideoDecodeAcceleration/VDADecoder.h; then
3755         enable vda
3756         add_extralibs -framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore
3757     fi
3758 fi
3759
3760 if ! disabled w32threads && ! enabled pthreads; then
3761     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3762 fi
3763
3764 # check for some common methods of building with pthread support
3765 # do this before the optional library checks as some of them require pthreads
3766 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3767     enable pthreads
3768     if check_func pthread_create; then
3769         :
3770     elif check_func pthread_create -pthread; then
3771         add_cflags -pthread
3772         add_extralibs -pthread
3773     elif check_func pthread_create -pthreads; then
3774         add_cflags -pthreads
3775         add_extralibs -pthreads
3776     elif check_func pthread_create -lpthreadGC2; then
3777         add_extralibs -lpthreadGC2
3778     elif ! check_lib pthread.h pthread_create -lpthread; then
3779         disable pthreads
3780     fi
3781 fi
3782
3783 for thread in $THREADS_LIST; do
3784     if enabled $thread; then
3785         test -n "$thread_type" &&
3786             die "ERROR: Only one thread type must be selected." ||
3787             thread_type="$thread"
3788     fi
3789 done
3790
3791 if enabled pthreads; then
3792   check_func pthread_cancel
3793 fi
3794
3795 check_lib math.h sin -lm && LIBM="-lm"
3796 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3797 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3798
3799 atan2f_args=2
3800 ldexpf_args=2
3801 powf_args=2
3802
3803 for func in $MATH_FUNCS; do
3804     eval check_mathfunc $func \${${func}_args:-1}
3805 done
3806
3807 # these are off by default, so fail if requested and not available
3808 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3809 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3810 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3811 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3812 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3813 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3814 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3815 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3816 enabled libcdio    && require2 libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3817 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3818                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3819                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3820 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3821 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3822 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3823 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"
3824 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3825 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3826 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
3827 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3828 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3829 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3830 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3831 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3832 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3833 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3834 enabled libopenjpeg && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
3835                          check_lib openjpeg.h opj_version -lopenjpeg ||
3836                          die "ERROR: libopenjpeg not found"; }
3837 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3838 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3839 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3840 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3841 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3842 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3843 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3844     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3845     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3846 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3847 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3848                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3849                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3850 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3851 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3852 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3853 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3854 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3855 enabled libvpx     && {
3856     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3857                                 die "ERROR: libvpx decoder must be installed and version must be >=0.9.1"; }
3858     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
3859                                 die "ERROR: libvpx encoder version must be >=0.9.7"; } }
3860 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3861                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3862                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3863 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3864 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3865 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
3866                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
3867                         die "ERROR: openal not found"; } &&
3868                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
3869                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
3870 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3871                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3872                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3873                         die "ERROR: openssl not found"; }
3874
3875 if enabled gnutls; then
3876     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3877     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3878 fi
3879
3880 # libdc1394 check
3881 if enabled libdc1394; then
3882     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3883         enable libdc1394_2; } ||
3884     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3885         enable libdc1394_1; } ||
3886     die "ERROR: No version of libdc1394 found "
3887 fi
3888
3889 SDL_CONFIG="${cross_prefix}sdl-config"
3890 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3891     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3892     enable sdl &&
3893     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3894 else
3895   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
3896     sdl_cflags=$("${SDL_CONFIG}" --cflags)
3897     sdl_libs=$("${SDL_CONFIG}" --libs)
3898     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
3899     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3900     enable sdl &&
3901     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
3902   fi
3903 fi
3904 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
3905
3906 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
3907 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
3908 perl --version > /dev/null 2>&1 && enable perl || disable perl
3909 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
3910 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
3911
3912 check_header linux/fb.h
3913 check_header linux/videodev.h
3914 check_header linux/videodev2.h
3915 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3916
3917 check_header sys/videoio.h
3918
3919 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3920 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3921 # w32api 3.12 had it defined wrong
3922 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3923
3924 check_type "dshow.h" IBaseFilter
3925
3926 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3927 { check_header dev/bktr/ioctl_meteor.h &&
3928   check_header dev/bktr/ioctl_bt848.h; } ||
3929 { check_header machine/ioctl_meteor.h &&
3930   check_header machine/ioctl_bt848.h; } ||
3931 { check_header dev/video/meteor/ioctl_meteor.h &&
3932   check_header dev/video/bktr/ioctl_bt848.h; } ||
3933 check_header dev/ic/bt8xx.h
3934
3935 check_header sndio.h
3936 if check_struct sys/soundcard.h audio_buf_info bytes; then
3937     enable_safe sys/soundcard.h
3938 else
3939     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
3940     #include <sys/soundcard.h>
3941     audio_buf_info abc;
3942 EOF
3943 fi
3944 check_header soundcard.h
3945
3946 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3947
3948 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
3949     check_func jack_port_get_latency_range -ljack
3950
3951 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3952
3953
3954 enabled x11grab                                           &&
3955 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3956 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3957 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3958
3959 if ! disabled vaapi; then
3960     check_lib va/va.h vaInitialize -lva && {
3961         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3962         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3963     } || disable vaapi
3964 fi
3965
3966 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3967     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3968         { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." && disable vdpau; }
3969 fi
3970
3971 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3972 enabled coverage && add_cflags "-fprofile-arcs -ftest-coverage" && add_ldflags "-fprofile-arcs -ftest-coverage"
3973 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"
3974
3975 # add some useful compiler flags if supported
3976 check_cflags -Wdeclaration-after-statement
3977 check_cflags -Wall
3978 check_cflags -Wno-parentheses
3979 check_cflags -Wno-switch
3980 check_cflags -Wno-format-zero-length
3981 check_cflags -Wdisabled-optimization
3982 check_cflags -Wpointer-arith
3983 check_cflags -Wredundant-decls
3984 check_cflags -Wno-pointer-sign
3985 check_cflags -Wwrite-strings
3986 check_cflags -Wtype-limits
3987 check_cflags -Wundef
3988 check_cflags -Wmissing-prototypes
3989 check_cflags -Wno-pointer-to-int-cast
3990 check_cflags -Wstrict-prototypes
3991 enabled extra_warnings && check_cflags -Winline
3992
3993 # add some linker flags
3994 check_ldflags -Wl,--warn-common
3995 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3996 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3997
3998 enabled xmm_clobber_test &&
3999     check_ldflags -Wl,--wrap,avcodec_open2              \
4000                   -Wl,--wrap,avcodec_decode_audio4      \
4001                   -Wl,--wrap,avcodec_decode_video2      \
4002                   -Wl,--wrap,avcodec_decode_subtitle2   \
4003                   -Wl,--wrap,avcodec_encode_audio2      \
4004                   -Wl,--wrap,avcodec_encode_video       \
4005                   -Wl,--wrap,avcodec_encode_subtitle    \
4006                   -Wl,--wrap,sws_scale ||
4007     disable xmm_clobber_test
4008
4009 echo "X{};" > $TMPV
4010 if test_ldflags -Wl,--version-script,$TMPV; then
4011     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4012     check_cc <<EOF && enable symver_asm_label
4013 void ff_foo(void) __asm__ ("av_foo@VERSION");
4014 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4015 EOF
4016     check_cc <<EOF && enable symver_gnu_asm
4017 __asm__(".symver ff_foo,av_foo@VERSION");
4018 void ff_foo(void) {}
4019 EOF
4020 fi
4021
4022 if [ -z "$optflags" ]; then
4023     if enabled small; then
4024         optflags=$cflags_size
4025     elif enabled optimizations; then
4026         optflags=$cflags_speed
4027     else
4028         optflags=$cflags_noopt
4029     fi
4030 fi
4031
4032 check_optflags(){
4033     check_cflags "$@"
4034     enabled lto && check_ldflags "$@"
4035 }
4036
4037
4038 if enabled lto; then
4039     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4040     check_cflags  -flto
4041     check_ldflags -flto $cpuflags
4042 fi
4043
4044 check_optflags $optflags
4045 check_optflags -fno-math-errno
4046 check_optflags -fno-signed-zeros
4047
4048 enabled ftrapv && check_cflags -ftrapv
4049
4050 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4051 int x;
4052 EOF
4053
4054
4055 if enabled icc; then
4056     # Just warnings, no remarks
4057     check_cflags -w1
4058     # -wd: Disable following warnings
4059     # 144, 167, 556: -Wno-pointer-sign
4060     # 1292: attribute "foo" ignored
4061     # 1419: external declaration in primary source file
4062     # 10006: ignoring unknown option -fno-signed-zeros
4063     # 10148: ignoring unknown option -Wno-parentheses
4064     # 10156: ignoring option '-W'; no argument required
4065     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4066     # 11030: Warning unknown option --as-needed
4067     # 10156: ignoring option '-export'; no argument required
4068     check_ldflags -wd10156,11030
4069     # Allow to compile with optimizations
4070     check_ldflags -march=$cpu
4071     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4072     enable ebp_available
4073     if enabled x86_32; then
4074         icc_version=$($cc -dumpversion)
4075         test ${icc_version%%.*} -ge 11 &&
4076             check_cflags -falign-stack=maintain-16-byte ||
4077             disable aligned_stack
4078     fi
4079 elif enabled ccc; then
4080     # disable some annoying warnings
4081     add_cflags -msg_disable bitnotint
4082     add_cflags -msg_disable mixfuncvoid
4083     add_cflags -msg_disable nonstandcast
4084     add_cflags -msg_disable unsupieee
4085 elif enabled gcc; then
4086     check_optflags -fno-tree-vectorize
4087     check_cflags -Werror=implicit-function-declaration
4088     check_cflags -Werror=missing-prototypes
4089     check_cflags -Werror=vla
4090 elif enabled llvm_gcc; then
4091     check_cflags -mllvm -stack-alignment=16
4092 elif enabled clang; then
4093     check_cflags -mllvm -stack-alignment=16
4094     check_cflags -Qunused-arguments
4095     check_cflags -Werror=implicit-function-declaration
4096     check_cflags -Werror=missing-prototypes
4097 elif enabled armcc; then
4098     # 2523: use of inline assembler is deprecated
4099     add_cflags -W${armcc_opt},--diag_suppress=2523
4100     add_cflags -W${armcc_opt},--diag_suppress=1207
4101     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4102     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4103     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4104     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4105 elif enabled tms470; then
4106     add_cflags -pds=824 -pds=837
4107 elif enabled pathscale; then
4108     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4109 elif enabled msvc; then
4110     enabled x86_32 && disable aligned_stack
4111 fi
4112
4113 case $target_os in
4114     osf1)
4115         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4116     ;;
4117     plan9)
4118         add_cppflags -Dmain=plan9_main
4119     ;;
4120 esac
4121
4122 enabled_any $THREADS_LIST      && enable threads
4123
4124 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4125
4126 check_deps $CONFIG_LIST       \
4127            $CONFIG_EXTRA      \
4128            $HAVE_LIST         \
4129            $ALL_COMPONENTS    \
4130
4131
4132 if test $target_os = "haiku"; then
4133     disable memalign
4134     disable posix_memalign
4135 fi
4136
4137 ! enabled_any memalign posix_memalign aligned_malloc &&
4138     enabled_any $need_memalign && enable memalign_hack
4139
4140 # add_dep lib dep
4141 # -> enable ${lib}_deps_${dep}
4142 # -> add $dep to ${lib}_deps only once
4143 add_dep() {
4144     lib=$1
4145     dep=$2
4146     enabled "${lib}_deps_${dep}" && return 0
4147     enable  "${lib}_deps_${dep}"
4148     prepend "${lib}_deps" $dep
4149 }
4150
4151 # merge deps lib components
4152 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4153 merge_deps() {
4154     lib=$1
4155     shift
4156     for comp in $*; do
4157         enabled $comp || continue
4158         eval "dep=\"\$${comp}_deps\""
4159         for d in $dep; do
4160             add_dep $lib $d
4161         done
4162     done
4163 }
4164
4165 merge_deps libavfilter $FILTER_LIST
4166
4167 echo "install prefix            $prefix"
4168 echo "source path               $source_path"
4169 echo "C compiler                $cc"
4170 echo "ARCH                      $arch ($cpu)"
4171 if test "$build_suffix" != ""; then
4172     echo "build suffix              $build_suffix"
4173 fi
4174 if test "$progs_suffix" != ""; then
4175     echo "progs suffix              $progs_suffix"
4176 fi
4177 if test "$extra_version" != ""; then
4178     echo "version string suffix     $extra_version"
4179 fi
4180 echo "big-endian                ${bigendian-no}"
4181 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4182 if enabled x86; then
4183     echo "${yasmexe}                      ${yasm-no}"
4184     echo "MMX enabled               ${mmx-no}"
4185     echo "MMXEXT enabled            ${mmxext-no}"
4186     echo "3DNow! enabled            ${amd3dnow-no}"
4187     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4188     echo "SSE enabled               ${sse-no}"
4189     echo "SSSE3 enabled             ${ssse3-no}"
4190     echo "AVX enabled               ${avx-no}"
4191     echo "FMA4 enabled              ${fma4-no}"
4192     echo "CMOV enabled              ${cmov-no}"
4193     echo "CMOV is fast              ${fast_cmov-no}"
4194     echo "EBX available             ${ebx_available-no}"
4195     echo "EBP available             ${ebp_available-no}"
4196 fi
4197 if enabled arm; then
4198     echo "ARMv5TE enabled           ${armv5te-no}"
4199     echo "ARMv6 enabled             ${armv6-no}"
4200     echo "ARMv6T2 enabled           ${armv6t2-no}"
4201     echo "VFP enabled               ${vfp-no}"
4202     echo "NEON enabled              ${neon-no}"
4203     echo "THUMB enabled             ${thumb-no}"
4204 fi
4205 if enabled mips; then
4206     echo "MIPS FPU enabled          ${mipsfpu-no}"
4207     echo "MIPS32R2 enabled          ${mips32r2-no}"
4208     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4209     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4210 fi
4211 if enabled ppc; then
4212     echo "AltiVec enabled           ${altivec-no}"
4213     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4214     echo "dcbzl available           ${dcbzl-no}"
4215 fi
4216 if enabled sparc; then
4217     echo "VIS enabled               ${vis-no}"
4218 fi
4219 echo "debug symbols             ${debug-no}"
4220 echo "strip symbols             ${stripping-no}"
4221 echo "optimize for size         ${small-no}"
4222 echo "optimizations             ${optimizations-no}"
4223 echo "static                    ${static-no}"
4224 echo "shared                    ${shared-no}"
4225 echo "postprocessing support    ${postproc-no}"
4226 echo "new filter support        ${avfilter-no}"
4227 echo "network support           ${network-no}"
4228 echo "threading support         ${thread_type-no}"
4229 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4230 echo "SDL support               ${sdl-no}"
4231 echo "libdxva2 enabled          ${dxva2-no}"
4232 echo "libva enabled             ${vaapi-no}"
4233 echo "libvdpau enabled          ${vdpau-no}"
4234 echo "AVISynth enabled          ${avisynth-no}"
4235 echo "frei0r enabled            ${frei0r-no}"
4236 echo "gnutls enabled            ${gnutls-no}"
4237 echo "libaacplus enabled        ${libaacplus-no}"
4238 echo "libass enabled            ${libass-no}"
4239 echo "libcaca enabled           ${libcaca-no}"
4240 echo "libcdio support           ${libcdio-no}"
4241 echo "libcelt enabled           ${libcelt-no}"
4242 echo "libdc1394 support         ${libdc1394-no}"
4243 echo "libfaac enabled           ${libfaac-no}"
4244 echo "libfdk-aac enabled        ${libfdk_aac-no}"
4245 echo "libgsm enabled            ${libgsm-no}"
4246 echo "libiec61883 support       ${libiec61883-no}"
4247 echo "libilbc enabled           ${libilbc-no}"
4248 echo "libmodplug enabled        ${libmodplug-no}"
4249 echo "libmp3lame enabled        ${libmp3lame-no}"
4250 echo "libnut enabled            ${libnut-no}"
4251 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
4252 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
4253 echo "libopencv support         ${libopencv-no}"
4254 echo "libopenjpeg enabled       ${libopenjpeg-no}"
4255 echo "libopus enabled           ${libopus-no}"
4256 echo "libpulse enabled          ${libpulse-no}"
4257 echo "librtmp enabled           ${librtmp-no}"
4258 echo "libschroedinger enabled   ${libschroedinger-no}"
4259 echo "libsoxr enabled           ${libsoxr-no}"
4260 echo "libspeex enabled          ${libspeex-no}"
4261 echo "libstagefright-h264 enabled    ${libstagefright_h264-no}"
4262 echo "libtheora enabled         ${libtheora-no}"
4263 echo "libtwolame enabled        ${libtwolame-no}"
4264 echo "libutvideo enabled        ${libutvideo-no}"
4265 echo "libv4l2 enabled           ${libv4l2-no}"
4266 echo "libvo-aacenc support      ${libvo_aacenc-no}"
4267 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
4268 echo "libvorbis enabled         ${libvorbis-no}"
4269 echo "libvpx enabled            ${libvpx-no}"
4270 echo "libx264 enabled           ${libx264-no}"
4271 echo "libxavs enabled           ${libxavs-no}"
4272 echo "libxvid enabled           ${libxvid-no}"
4273 echo "openal enabled            ${openal-no}"
4274 echo "openssl enabled           ${openssl-no}"
4275 echo "zlib enabled              ${zlib-no}"
4276 echo "bzlib enabled             ${bzlib-no}"
4277 echo "texi2html enabled         ${texi2html-no}"
4278 echo "perl enabled              ${perl-no}"
4279 echo "pod2man enabled           ${pod2man-no}"
4280 echo "makeinfo enabled          ${makeinfo-no}"
4281 test -n "$random_seed" &&
4282     echo "random seed               ${random_seed}"
4283 echo
4284
4285 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4286     echo "Enabled ${type}s:"
4287     eval list=\$$(toupper $type)_LIST
4288     print_enabled '_*' $list | sort | pr -r -3 -t
4289     echo
4290 done
4291
4292 license="LGPL version 2.1 or later"
4293 if enabled nonfree; then
4294     license="nonfree and unredistributable"
4295 elif enabled gplv3; then
4296     license="GPL version 3 or later"
4297 elif enabled lgplv3; then
4298     license="LGPL version 3 or later"
4299 elif enabled gpl; then
4300     license="GPL version 2 or later"
4301 fi
4302
4303 echo "License: $license"
4304
4305 echo "Creating config.mak and config.h..."
4306
4307 test -e Makefile || $ln_s "$source_path/Makefile" .
4308
4309 enabled stripping || strip="echo skipping strip"
4310
4311 config_files="$TMPH config.mak"
4312
4313 cat > config.mak <<EOF
4314 # Automatically generated by configure - do not modify!
4315 ifndef FFMPEG_CONFIG_MAK
4316 FFMPEG_CONFIG_MAK=1
4317 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4318 prefix=$prefix
4319 LIBDIR=\$(DESTDIR)$libdir
4320 SHLIBDIR=\$(DESTDIR)$shlibdir
4321 INCDIR=\$(DESTDIR)$incdir
4322 BINDIR=\$(DESTDIR)$bindir
4323 DATADIR=\$(DESTDIR)$datadir
4324 MANDIR=\$(DESTDIR)$mandir
4325 SRC_PATH=$source_path
4326 ifndef MAIN_MAKEFILE
4327 SRC_PATH:=\$(SRC_PATH:.%=..%)
4328 endif
4329 CC_IDENT=$cc_ident
4330 ARCH=$arch
4331 CC=$cc
4332 CXX=$cxx
4333 AS=$as
4334 LD=$ld
4335 DEPCC=$dep_cc
4336 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4337 DEPAS=$as
4338 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4339 YASM=$yasmexe
4340 DEPYASM=$yasmexe
4341 AR=$ar
4342 ARFLAGS=$arflags
4343 AR_O=$ar_o
4344 RANLIB=$ranlib
4345 CP=cp -p
4346 LN_S=$ln_s
4347 STRIP=$strip
4348 CPPFLAGS=$CPPFLAGS
4349 CFLAGS=$CFLAGS
4350 CXXFLAGS=$CXXFLAGS
4351 ASFLAGS=$ASFLAGS
4352 AS_C=$AS_C
4353 AS_O=$AS_O
4354 CC_C=$CC_C
4355 CC_E=$CC_E
4356 CC_O=$CC_O
4357 CXX_C=$CXX_C
4358 CXX_O=$CXX_O
4359 LD_O=$LD_O
4360 LD_LIB=$LD_LIB
4361 LD_PATH=$LD_PATH
4362 DLLTOOL=$dlltool
4363 LDFLAGS=$LDFLAGS
4364 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4365 SHFLAGS=$SHFLAGS
4366 YASMFLAGS=$YASMFLAGS
4367 BUILDSUF=$build_suffix
4368 PROGSSUF=$progs_suffix
4369 FULLNAME=$FULLNAME
4370 LIBPREF=$LIBPREF
4371 LIBSUF=$LIBSUF
4372 LIBNAME=$LIBNAME
4373 SLIBPREF=$SLIBPREF
4374 SLIBSUF=$SLIBSUF
4375 EXESUF=$EXESUF
4376 EXTRA_VERSION=$extra_version
4377 CCDEP=$CCDEP
4378 CXXDEP=$CXXDEP
4379 CCDEP_FLAGS=$CCDEP_FLAGS
4380 ASDEP=$ASDEP
4381 ASDEP_FLAGS=$ASDEP_FLAGS
4382 CC_DEPFLAGS=$CC_DEPFLAGS
4383 AS_DEPFLAGS=$AS_DEPFLAGS
4384 HOSTCC=$host_cc
4385 HOSTLD=$host_ld
4386 HOSTCFLAGS=$host_cflags
4387 HOSTEXESUF=$HOSTEXESUF
4388 HOSTLDFLAGS=$host_ldflags
4389 HOSTLIBS=$host_libs
4390 DEPHOSTCC=$host_cc
4391 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4392 HOSTCCDEP=$HOSTCCDEP
4393 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4394 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4395 HOSTCC_C=$HOSTCC_C
4396 HOSTCC_O=$HOSTCC_O
4397 HOSTLD_O=$HOSTLD_O
4398 TARGET_EXEC=$target_exec
4399 TARGET_PATH=$target_path
4400 LIBS-ffplay=$sdl_libs
4401 CFLAGS-ffplay=$sdl_cflags
4402 ZLIB=$($ldflags_filter -lz)
4403 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4404 EXTRALIBS=$extralibs
4405 COMPAT_OBJS=$compat_objs
4406 EXEOBJS=$exeobjs
4407 INSTALL=$install
4408 LIBTARGET=${LIBTARGET}
4409 SLIBNAME=${SLIBNAME}
4410 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4411 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4412 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4413 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4414 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4415 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4416 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4417 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4418 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4419 NOREDZONE_FLAGS=$noredzone_flags
4420 EOF
4421
4422 get_version(){
4423     lcname=lib${1}
4424     name=$(toupper $lcname)
4425     file=$source_path/$lcname/version.h
4426     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4427     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4428     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4429     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4430 }
4431
4432 map 'get_version $v' $LIBRARY_LIST
4433
4434 cat > $TMPH <<EOF
4435 /* Automatically generated by configure - do not modify! */
4436 #ifndef FFMPEG_CONFIG_H
4437 #define FFMPEG_CONFIG_H
4438 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4439 #define FFMPEG_LICENSE "$(c_escape $license)"
4440 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4441 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4442 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4443 #define av_restrict $_restrict
4444 #define EXTERN_PREFIX "${extern_prefix}"
4445 #define EXTERN_ASM ${extern_prefix}
4446 #define SLIBSUF "$SLIBSUF"
4447 #define HAVE_MMX2 HAVE_MMXEXT
4448 EOF
4449
4450 test -n "$assert_level" &&
4451     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4452
4453 test -n "$malloc_prefix" &&
4454     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4455
4456 if enabled yasm; then
4457     append config_files $TMPASM
4458     printf '' >$TMPASM
4459 fi
4460
4461 print_config ARCH_   "$config_files" $ARCH_LIST
4462 print_config HAVE_   "$config_files" $HAVE_LIST
4463 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4464                                      $CONFIG_EXTRA      \
4465                                      $ALL_COMPONENTS    \
4466
4467 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4468 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4469
4470 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4471 cp_if_changed $TMPH config.h
4472 touch .config
4473
4474 enabled yasm && cp_if_changed $TMPASM config.asm
4475
4476 cat > $TMPH <<EOF
4477 /* Generated by ffconf */
4478 #ifndef AVUTIL_AVCONFIG_H
4479 #define AVUTIL_AVCONFIG_H
4480 EOF
4481
4482 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4483
4484 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4485
4486 cp_if_changed $TMPH libavutil/avconfig.h
4487
4488 if test -n "$WARNINGS"; then
4489     printf "\n$WARNINGS"
4490     enabled fatal_warnings && exit 1
4491 fi
4492
4493 # build pkg-config files
4494
4495 pkgconfig_generate(){
4496     name=$1
4497     shortname=${name#lib}${build_suffix}
4498     comment=$2
4499     version=$3
4500     libs=$4
4501     requires=$5
4502     enabled ${name#lib} || return 0
4503     mkdir -p $name
4504     cat <<EOF > $name/$name.pc
4505 prefix=$prefix
4506 exec_prefix=\${prefix}
4507 libdir=$libdir
4508 includedir=$incdir
4509
4510 Name: $name
4511 Description: $comment
4512 Version: $version
4513 Requires: $(enabled shared || echo $requires)
4514 Requires.private: $(enabled shared && echo $requires)
4515 Conflicts:
4516 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4517 Libs.private: $(enabled shared && echo $libs)
4518 Cflags: -I\${includedir}
4519 EOF
4520
4521 mkdir -p doc/examples/pc-uninstalled
4522 includedir=${source_path}
4523 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4524     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4525 prefix=
4526 exec_prefix=
4527 libdir=\${pcfiledir}/../../../$name
4528 includedir=${includedir}
4529
4530 Name: $name
4531 Description: $comment
4532 Version: $version
4533 Requires: $requires
4534 Conflicts:
4535 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4536 Cflags: -I\${includedir}
4537 EOF
4538 }
4539
4540 libavfilter_pc_deps="libavutil = $LIBAVUTIL_VERSION"
4541 enabled libavfilter_deps_avcodec    && prepend libavfilter_pc_deps "libavcodec = $LIBAVCODEC_VERSION,"
4542 enabled libavfilter_deps_avformat   && prepend libavfilter_pc_deps "libavformat = $LIBAVFORMAT_VERSION,"
4543 enabled libavfilter_deps_avresample && prepend libavfilter_pc_deps "libavresample = $LIBAVRESAMPLE_VERSION,"
4544 enabled libavfilter_deps_swscale    && prepend libavfilter_pc_deps "libswscale = $LIBSWSCALE_VERSION,"
4545 enabled libavfilter_deps_swresample && prepend libavfilter_pc_deps "libswresample = $LIBSWRESAMPLE_VERSION,"
4546 enabled libavfilter_deps_postproc   && prepend libavfilter_pc_deps "libpostproc = $LIBPOSTPROC_VERSION,"
4547 libavfilter_pc_deps=${libavfilter_pc_deps%, }
4548
4549 libavdevice_pc_deps="libavformat = $LIBAVFORMAT_VERSION"
4550 enabled lavfi_indev && prepend libavdevice_pc_deps "libavfilter = $LIBAVFILTER_VERSION,"
4551
4552 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4553 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4554 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4555 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$libavdevice_pc_deps"
4556 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$libavfilter_pc_deps"
4557 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
4558 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4559 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4560 pkgconfig_generate libswresample "FFmpeg audio resampling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"
4561
4562 fix_ffmpeg_remote(){
4563     git_remote_from=$1
4564     git_remote_to=$2
4565     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4566     if [ "$fixme_remote" != "" ]; then
4567         echolog "
4568 Outdated domain in git config, the official domain for ffmpeg git is since
4569 November 2011, source.ffmpeg.org, both the old and the new point to the same
4570 repository and server. To update it enter the following commands:
4571 "
4572         for remote in $fixme_remote; do
4573             echolog "git remote set-url $remote $git_remote_to"
4574         done
4575     fi
4576 }
4577
4578 if test -f "$source_path/.git/config"; then
4579     remote_from=git.videolan.org
4580     remote_to=source.ffmpeg.org
4581     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4582     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4583 fi